diff --git a/sys/net80211/ieee80211.c b/sys/net80211/ieee80211.c index 49d313e5077d..eb796462d3d1 100644 --- a/sys/net80211/ieee80211.c +++ b/sys/net80211/ieee80211.c @@ -1,2718 +1,2718 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include /* * IEEE 802.11 generic handler */ #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #include #include #include const char *ieee80211_phymode_name[IEEE80211_MODE_MAX] = { [IEEE80211_MODE_AUTO] = "auto", [IEEE80211_MODE_11A] = "11a", [IEEE80211_MODE_11B] = "11b", [IEEE80211_MODE_11G] = "11g", [IEEE80211_MODE_FH] = "FH", [IEEE80211_MODE_TURBO_A] = "turboA", [IEEE80211_MODE_TURBO_G] = "turboG", [IEEE80211_MODE_STURBO_A] = "sturboA", [IEEE80211_MODE_HALF] = "half", [IEEE80211_MODE_QUARTER] = "quarter", [IEEE80211_MODE_11NA] = "11na", [IEEE80211_MODE_11NG] = "11ng", [IEEE80211_MODE_VHT_2GHZ] = "11acg", [IEEE80211_MODE_VHT_5GHZ] = "11ac", }; /* map ieee80211_opmode to the corresponding capability bit */ const int ieee80211_opcap[IEEE80211_OPMODE_MAX] = { [IEEE80211_M_IBSS] = IEEE80211_C_IBSS, [IEEE80211_M_WDS] = IEEE80211_C_WDS, [IEEE80211_M_STA] = IEEE80211_C_STA, [IEEE80211_M_AHDEMO] = IEEE80211_C_AHDEMO, [IEEE80211_M_HOSTAP] = IEEE80211_C_HOSTAP, [IEEE80211_M_MONITOR] = IEEE80211_C_MONITOR, #ifdef IEEE80211_SUPPORT_MESH [IEEE80211_M_MBSS] = IEEE80211_C_MBSS, #endif }; const uint8_t ieee80211broadcastaddr[IEEE80211_ADDR_LEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag); static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag); static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag); static void ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag); static int ieee80211_media_setup(struct ieee80211com *ic, struct ifmedia *media, int caps, int addsta, ifm_change_cb_t media_change, ifm_stat_cb_t media_stat); static int media_status(enum ieee80211_opmode, const struct ieee80211_channel *); static uint64_t ieee80211_get_counter(struct ifnet *, ift_counter); MALLOC_DEFINE(M_80211_VAP, "80211vap", "802.11 vap state"); /* * Default supported rates for 802.11 operation (in IEEE .5Mb units). */ #define B(r) ((r) | IEEE80211_RATE_BASIC) static const struct ieee80211_rateset ieee80211_rateset_11a = { 8, { B(12), 18, B(24), 36, B(48), 72, 96, 108 } }; static const struct ieee80211_rateset ieee80211_rateset_half = { 8, { B(6), 9, B(12), 18, B(24), 36, 48, 54 } }; static const struct ieee80211_rateset ieee80211_rateset_quarter = { 8, { B(3), 4, B(6), 9, B(12), 18, 24, 27 } }; static const struct ieee80211_rateset ieee80211_rateset_11b = { 4, { B(2), B(4), B(11), B(22) } }; /* NB: OFDM rates are handled specially based on mode */ static const struct ieee80211_rateset ieee80211_rateset_11g = { 12, { B(2), B(4), B(11), B(22), 12, 18, 24, 36, 48, 72, 96, 108 } }; #undef B static int set_vht_extchan(struct ieee80211_channel *c); /* * Fill in 802.11 available channel set, mark * all available channels as active, and pick * a default channel if not already specified. */ void ieee80211_chan_init(struct ieee80211com *ic) { #define DEFAULTRATES(m, def) do { \ if (ic->ic_sup_rates[m].rs_nrates == 0) \ ic->ic_sup_rates[m] = def; \ } while (0) struct ieee80211_channel *c; int i; KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX, ("invalid number of channels specified: %u", ic->ic_nchans)); memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps)); setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO); for (i = 0; i < ic->ic_nchans; i++) { c = &ic->ic_channels[i]; KASSERT(c->ic_flags != 0, ("channel with no flags")); /* * Help drivers that work only with frequencies by filling * in IEEE channel #'s if not already calculated. Note this * mimics similar work done in ieee80211_setregdomain when * changing regulatory state. */ if (c->ic_ieee == 0) c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags); /* * Setup the HT40/VHT40 upper/lower bits. * The VHT80/... math is done elsewhere. */ if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0) c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq + (IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20), c->ic_flags); /* Update VHT math */ /* * XXX VHT again, note that this assumes VHT80/... channels * are legit already. */ set_vht_extchan(c); /* default max tx power to max regulatory */ if (c->ic_maxpower == 0) c->ic_maxpower = 2*c->ic_maxregpower; setbit(ic->ic_chan_avail, c->ic_ieee); /* * Identify mode capabilities. */ if (IEEE80211_IS_CHAN_A(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_11A); if (IEEE80211_IS_CHAN_B(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_11B); if (IEEE80211_IS_CHAN_ANYG(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_11G); if (IEEE80211_IS_CHAN_FHSS(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_FH); if (IEEE80211_IS_CHAN_108A(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A); if (IEEE80211_IS_CHAN_108G(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G); if (IEEE80211_IS_CHAN_ST(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A); if (IEEE80211_IS_CHAN_HALF(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_HALF); if (IEEE80211_IS_CHAN_QUARTER(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER); if (IEEE80211_IS_CHAN_HTA(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_11NA); if (IEEE80211_IS_CHAN_HTG(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_11NG); if (IEEE80211_IS_CHAN_VHTA(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_5GHZ); if (IEEE80211_IS_CHAN_VHTG(c)) setbit(ic->ic_modecaps, IEEE80211_MODE_VHT_2GHZ); } /* initialize candidate channels to all available */ memcpy(ic->ic_chan_active, ic->ic_chan_avail, sizeof(ic->ic_chan_avail)); /* sort channel table to allow lookup optimizations */ ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); /* invalidate any previous state */ ic->ic_bsschan = IEEE80211_CHAN_ANYC; ic->ic_prevchan = NULL; ic->ic_csa_newchan = NULL; /* arbitrarily pick the first channel */ ic->ic_curchan = &ic->ic_channels[0]; ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); /* fillin well-known rate sets if driver has not specified */ DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b); DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g); DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a); DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a); DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g); DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a); DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half); DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter); DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a); DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g); DEFAULTRATES(IEEE80211_MODE_VHT_2GHZ, ieee80211_rateset_11g); DEFAULTRATES(IEEE80211_MODE_VHT_5GHZ, ieee80211_rateset_11a); /* * Setup required information to fill the mcsset field, if driver did * not. Assume a 2T2R setup for historic reasons. */ if (ic->ic_rxstream == 0) ic->ic_rxstream = 2; if (ic->ic_txstream == 0) ic->ic_txstream = 2; ieee80211_init_suphtrates(ic); /* * Set auto mode to reset active channel state and any desired channel. */ (void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO); #undef DEFAULTRATES } static void null_update_mcast(struct ieee80211com *ic) { ic_printf(ic, "need multicast update callback\n"); } static void null_update_promisc(struct ieee80211com *ic) { ic_printf(ic, "need promiscuous mode update callback\n"); } static void null_update_chw(struct ieee80211com *ic) { ic_printf(ic, "%s: need callback\n", __func__); } int ic_printf(struct ieee80211com *ic, const char * fmt, ...) { va_list ap; int retval; retval = printf("%s: ", ic->ic_name); va_start(ap, fmt); retval += vprintf(fmt, ap); va_end(ap); return (retval); } static LIST_HEAD(, ieee80211com) ic_head = LIST_HEAD_INITIALIZER(ic_head); static struct mtx ic_list_mtx; MTX_SYSINIT(ic_list, &ic_list_mtx, "ieee80211com list", MTX_DEF); static int sysctl_ieee80211coms(SYSCTL_HANDLER_ARGS) { struct ieee80211com *ic; struct sbuf sb; char *sp; int error; error = sysctl_wire_old_buffer(req, 0); if (error) return (error); sbuf_new_for_sysctl(&sb, NULL, 8, req); sbuf_clear_flags(&sb, SBUF_INCLUDENUL); sp = ""; mtx_lock(&ic_list_mtx); LIST_FOREACH(ic, &ic_head, ic_next) { sbuf_printf(&sb, "%s%s", sp, ic->ic_name); sp = " "; } mtx_unlock(&ic_list_mtx); error = sbuf_finish(&sb); sbuf_delete(&sb); return (error); } SYSCTL_PROC(_net_wlan, OID_AUTO, devices, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_ieee80211coms, "A", "names of available 802.11 devices"); /* * Attach/setup the common net80211 state. Called by * the driver on attach to prior to creating any vap's. */ void ieee80211_ifattach(struct ieee80211com *ic) { IEEE80211_LOCK_INIT(ic, ic->ic_name); IEEE80211_TX_LOCK_INIT(ic, ic->ic_name); TAILQ_INIT(&ic->ic_vaps); /* Create a taskqueue for all state changes */ ic->ic_tq = taskqueue_create("ic_taskq", IEEE80211_M_WAITOK | IEEE80211_M_ZERO, taskqueue_thread_enqueue, &ic->ic_tq); taskqueue_start_threads(&ic->ic_tq, 1, PI_NET, "%s net80211 taskq", ic->ic_name); ic->ic_ierrors = counter_u64_alloc(IEEE80211_M_WAITOK); ic->ic_oerrors = counter_u64_alloc(IEEE80211_M_WAITOK); /* * Fill in 802.11 available channel set, mark all * available channels as active, and pick a default * channel if not already specified. */ ieee80211_chan_init(ic); ic->ic_update_mcast = null_update_mcast; ic->ic_update_promisc = null_update_promisc; ic->ic_update_chw = null_update_chw; ic->ic_hash_key = arc4random(); ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT; ic->ic_lintval = ic->ic_bintval; ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX; ieee80211_crypto_attach(ic); ieee80211_node_attach(ic); ieee80211_power_attach(ic); ieee80211_proto_attach(ic); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_superg_attach(ic); #endif ieee80211_ht_attach(ic); ieee80211_vht_attach(ic); ieee80211_scan_attach(ic); ieee80211_regdomain_attach(ic); ieee80211_dfs_attach(ic); ieee80211_sysctl_attach(ic); mtx_lock(&ic_list_mtx); LIST_INSERT_HEAD(&ic_head, ic, ic_next); mtx_unlock(&ic_list_mtx); } /* * Detach net80211 state on device detach. Tear down * all vap's and reclaim all common state prior to the * device state going away. Note we may call back into * driver; it must be prepared for this. */ void ieee80211_ifdetach(struct ieee80211com *ic) { struct ieee80211vap *vap; /* * We use this as an indicator that ifattach never had a chance to be * called, e.g. early driver attach failed and ifdetach was called * during subsequent detach. Never fear, for we have nothing to do * here. */ if (ic->ic_tq == NULL) return; mtx_lock(&ic_list_mtx); LIST_REMOVE(ic, ic_next); mtx_unlock(&ic_list_mtx); taskqueue_drain(taskqueue_thread, &ic->ic_restart_task); /* * The VAP is responsible for setting and clearing * the VIMAGE context. */ while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) { ieee80211_com_vdetach(vap); ieee80211_vap_destroy(vap); } ieee80211_waitfor_parent(ic); ieee80211_sysctl_detach(ic); ieee80211_dfs_detach(ic); ieee80211_regdomain_detach(ic); ieee80211_scan_detach(ic); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_superg_detach(ic); #endif ieee80211_vht_detach(ic); ieee80211_ht_detach(ic); /* NB: must be called before ieee80211_node_detach */ ieee80211_proto_detach(ic); ieee80211_crypto_detach(ic); ieee80211_power_detach(ic); ieee80211_node_detach(ic); counter_u64_free(ic->ic_ierrors); counter_u64_free(ic->ic_oerrors); taskqueue_free(ic->ic_tq); IEEE80211_TX_LOCK_DESTROY(ic); IEEE80211_LOCK_DESTROY(ic); } /* * Called by drivers during attach to set the supported * cipher set for software encryption. */ void ieee80211_set_software_ciphers(struct ieee80211com *ic, uint32_t cipher_suite) { ieee80211_crypto_set_supported_software_ciphers(ic, cipher_suite); } /* * Called by drivers during attach to set the supported * cipher set for hardware encryption. */ void ieee80211_set_hardware_ciphers(struct ieee80211com *ic, uint32_t cipher_suite) { ieee80211_crypto_set_supported_hardware_ciphers(ic, cipher_suite); } /* * Called by drivers during attach to set the supported * key management suites by the driver/hardware. */ void ieee80211_set_driver_keymgmt_suites(struct ieee80211com *ic, uint32_t keymgmt_set) { ieee80211_crypto_set_supported_driver_keymgmt(ic, keymgmt_set); } struct ieee80211com * ieee80211_find_com(const char *name) { struct ieee80211com *ic; mtx_lock(&ic_list_mtx); LIST_FOREACH(ic, &ic_head, ic_next) if (strcmp(ic->ic_name, name) == 0) break; mtx_unlock(&ic_list_mtx); return (ic); } void ieee80211_iterate_coms(ieee80211_com_iter_func *f, void *arg) { struct ieee80211com *ic; mtx_lock(&ic_list_mtx); LIST_FOREACH(ic, &ic_head, ic_next) (*f)(arg, ic); mtx_unlock(&ic_list_mtx); } /* * Default reset method for use with the ioctl support. This * method is invoked after any state change in the 802.11 * layer that should be propagated to the hardware but not * require re-initialization of the 802.11 state machine (e.g * rescanning for an ap). We always return ENETRESET which * should cause the driver to re-initialize the device. Drivers * can override this method to implement more optimized support. */ static int default_reset(struct ieee80211vap *vap, u_long cmd) { return ENETRESET; } /* * Default for updating the VAP default TX key index. * * Drivers that support TX offload as well as hardware encryption offload * may need to be informed of key index changes separate from the key * update. */ static void default_update_deftxkey(struct ieee80211vap *vap, ieee80211_keyix kid) { /* XXX assert validity */ /* XXX assert we're in a key update block */ vap->iv_def_txkey = kid; } /* * Add underlying device errors to vap errors. */ static uint64_t ieee80211_get_counter(struct ifnet *ifp, ift_counter cnt) { struct ieee80211vap *vap = ifp->if_softc; struct ieee80211com *ic = vap->iv_ic; uint64_t rv; rv = if_get_counter_default(ifp, cnt); switch (cnt) { case IFCOUNTER_OERRORS: rv += counter_u64_fetch(ic->ic_oerrors); break; case IFCOUNTER_IERRORS: rv += counter_u64_fetch(ic->ic_ierrors); break; default: break; } return (rv); } /* * Prepare a vap for use. Drivers use this call to * setup net80211 state in new vap's prior attaching * them with ieee80211_vap_attach (below). */ int ieee80211_vap_setup(struct ieee80211com *ic, struct ieee80211vap *vap, const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, int flags, const uint8_t bssid[IEEE80211_ADDR_LEN]) { struct ifnet *ifp; ifp = if_alloc(IFT_ETHER); if_initname(ifp, name, unit); ifp->if_softc = vap; /* back pointer */ ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; ifp->if_transmit = ieee80211_vap_transmit; ifp->if_qflush = ieee80211_vap_qflush; ifp->if_ioctl = ieee80211_ioctl; ifp->if_init = ieee80211_init; ifp->if_get_counter = ieee80211_get_counter; vap->iv_ifp = ifp; vap->iv_ic = ic; vap->iv_flags = ic->ic_flags; /* propagate common flags */ vap->iv_flags_ext = ic->ic_flags_ext; vap->iv_flags_ven = ic->ic_flags_ven; vap->iv_caps = ic->ic_caps &~ IEEE80211_C_OPMODE; /* 11n capabilities - XXX methodize */ vap->iv_htcaps = ic->ic_htcaps; vap->iv_htextcaps = ic->ic_htextcaps; /* 11ac capabilities - XXX methodize */ vap->iv_vht_cap.vht_cap_info = ic->ic_vht_cap.vht_cap_info; vap->iv_vhtextcaps = ic->ic_vhtextcaps; vap->iv_opmode = opmode; vap->iv_caps |= ieee80211_opcap[opmode]; IEEE80211_ADDR_COPY(vap->iv_myaddr, ic->ic_macaddr); switch (opmode) { case IEEE80211_M_WDS: /* * WDS links must specify the bssid of the far end. * For legacy operation this is a static relationship. * For non-legacy operation the station must associate * and be authorized to pass traffic. Plumbing the * vap to the proper node happens when the vap * transitions to RUN state. */ IEEE80211_ADDR_COPY(vap->iv_des_bssid, bssid); vap->iv_flags |= IEEE80211_F_DESBSSID; if (flags & IEEE80211_CLONE_WDSLEGACY) vap->iv_flags_ext |= IEEE80211_FEXT_WDSLEGACY; break; #ifdef IEEE80211_SUPPORT_TDMA case IEEE80211_M_AHDEMO: if (flags & IEEE80211_CLONE_TDMA) { /* NB: checked before clone operation allowed */ KASSERT(ic->ic_caps & IEEE80211_C_TDMA, ("not TDMA capable, ic_caps 0x%x", ic->ic_caps)); /* * Propagate TDMA capability to mark vap; this * cannot be removed and is used to distinguish * regular ahdemo operation from ahdemo+tdma. */ vap->iv_caps |= IEEE80211_C_TDMA; } break; #endif default: break; } /* auto-enable s/w beacon miss support */ if (flags & IEEE80211_CLONE_NOBEACONS) vap->iv_flags_ext |= IEEE80211_FEXT_SWBMISS; /* auto-generated or user supplied MAC address */ if (flags & (IEEE80211_CLONE_BSSID|IEEE80211_CLONE_MACADDR)) vap->iv_flags_ext |= IEEE80211_FEXT_UNIQMAC; /* * Enable various functionality by default if we're * capable; the driver can override us if it knows better. */ if (vap->iv_caps & IEEE80211_C_WME) vap->iv_flags |= IEEE80211_F_WME; if (vap->iv_caps & IEEE80211_C_BURST) vap->iv_flags |= IEEE80211_F_BURST; /* NB: bg scanning only makes sense for station mode right now */ if (vap->iv_opmode == IEEE80211_M_STA && (vap->iv_caps & IEEE80211_C_BGSCAN)) vap->iv_flags |= IEEE80211_F_BGSCAN; vap->iv_flags |= IEEE80211_F_DOTH; /* XXX no cap, just ena */ /* NB: DFS support only makes sense for ap mode right now */ if (vap->iv_opmode == IEEE80211_M_HOSTAP && (vap->iv_caps & IEEE80211_C_DFS)) vap->iv_flags_ext |= IEEE80211_FEXT_DFS; /* NB: only flip on U-APSD for hostap/sta for now */ if ((vap->iv_opmode == IEEE80211_M_STA) || (vap->iv_opmode == IEEE80211_M_HOSTAP)) { if (vap->iv_caps & IEEE80211_C_UAPSD) vap->iv_flags_ext |= IEEE80211_FEXT_UAPSD; } vap->iv_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ vap->iv_bmissthreshold = IEEE80211_HWBMISS_DEFAULT; vap->iv_dtim_period = IEEE80211_DTIM_DEFAULT; /* * Install a default reset method for the ioctl support; * the driver can override this. */ vap->iv_reset = default_reset; /* * Install a default crypto key update method, the driver * can override this. */ vap->iv_update_deftxkey = default_update_deftxkey; ieee80211_sysctl_vattach(vap); ieee80211_crypto_vattach(vap); ieee80211_node_vattach(vap); ieee80211_power_vattach(vap); ieee80211_proto_vattach(vap); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_superg_vattach(vap); #endif ieee80211_ht_vattach(vap); ieee80211_vht_vattach(vap); ieee80211_scan_vattach(vap); ieee80211_regdomain_vattach(vap); ieee80211_radiotap_vattach(vap); ieee80211_vap_reset_erp(vap); ieee80211_ratectl_set(vap, IEEE80211_RATECTL_NONE); return 0; } /* * Activate a vap. State should have been prepared with a * call to ieee80211_vap_setup and by the driver. On return * from this call the vap is ready for use. */ int ieee80211_vap_attach(struct ieee80211vap *vap, ifm_change_cb_t media_change, ifm_stat_cb_t media_stat, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct ifnet *ifp = vap->iv_ifp; struct ieee80211com *ic = vap->iv_ic; struct ifmediareq imr; int maxrate; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s flags 0x%x flags_ext 0x%x\n", __func__, ieee80211_opmode_name[vap->iv_opmode], ic->ic_name, vap->iv_flags, vap->iv_flags_ext); /* * Do late attach work that cannot happen until after * the driver has had a chance to override defaults. */ ieee80211_node_latevattach(vap); ieee80211_power_latevattach(vap); maxrate = ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, vap->iv_opmode == IEEE80211_M_STA, media_change, media_stat); ieee80211_media_status(ifp, &imr); /* NB: strip explicit mode; we're actually in autoselect */ ifmedia_set(&vap->iv_media, imr.ifm_active &~ (IFM_MMASK | IFM_IEEE80211_TURBO)); if (maxrate) ifp->if_baudrate = IF_Mbps(maxrate); ether_ifattach(ifp, macaddr); IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); /* hook output method setup by ether_ifattach */ vap->iv_output = ifp->if_output; ifp->if_output = ieee80211_output; /* NB: if_mtu set by ether_ifattach to ETHERMTU */ IEEE80211_LOCK(ic); TAILQ_INSERT_TAIL(&ic->ic_vaps, vap, iv_next); ieee80211_syncflag_locked(ic, IEEE80211_F_WME); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); #endif ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_TX); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_RX); IEEE80211_UNLOCK(ic); return 1; } /* * Tear down vap state and reclaim the ifnet. * The driver is assumed to have prepared for * this; e.g. by turning off interrupts for the * underlying device. */ void ieee80211_vap_detach(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; struct ifnet *ifp = vap->iv_ifp; int i; CURVNET_SET(ifp->if_vnet); IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s parent %s\n", __func__, ieee80211_opmode_name[vap->iv_opmode], ic->ic_name); /* NB: bpfdetach is called by ether_ifdetach and claims all taps */ ether_ifdetach(ifp); ieee80211_stop(vap); /* * Flush any deferred vap tasks. */ for (i = 0; i < NET80211_IV_NSTATE_NUM; i++) ieee80211_draintask(ic, &vap->iv_nstate_task[i]); ieee80211_draintask(ic, &vap->iv_swbmiss_task); ieee80211_draintask(ic, &vap->iv_wme_task); ieee80211_draintask(ic, &ic->ic_parent_task); /* XXX band-aid until ifnet handles this for us */ taskqueue_drain(taskqueue_swi, &ifp->if_linktask); IEEE80211_LOCK(ic); KASSERT(vap->iv_state == IEEE80211_S_INIT , ("vap still running")); TAILQ_REMOVE(&ic->ic_vaps, vap, iv_next); ieee80211_syncflag_locked(ic, IEEE80211_F_WME); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_syncflag_locked(ic, IEEE80211_F_TURBOP); #endif ieee80211_syncflag_locked(ic, IEEE80211_F_PCF); ieee80211_syncflag_locked(ic, IEEE80211_F_BURST); ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_HT); ieee80211_syncflag_ht_locked(ic, IEEE80211_FHT_USEHT40); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_VHT); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT40); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_TX); ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_RX); /* NB: this handles the bpfdetach done below */ ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF); if (vap->iv_ifflags & IFF_PROMISC) ieee80211_promisc(vap, false); if (vap->iv_ifflags & IFF_ALLMULTI) ieee80211_allmulti(vap, false); IEEE80211_UNLOCK(ic); ifmedia_removeall(&vap->iv_media); ieee80211_radiotap_vdetach(vap); ieee80211_regdomain_vdetach(vap); ieee80211_scan_vdetach(vap); #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_superg_vdetach(vap); #endif ieee80211_vht_vdetach(vap); ieee80211_ht_vdetach(vap); /* NB: must be before ieee80211_node_vdetach */ ieee80211_proto_vdetach(vap); ieee80211_crypto_vdetach(vap); ieee80211_power_vdetach(vap); ieee80211_node_vdetach(vap); ieee80211_sysctl_vdetach(vap); if_free(ifp); CURVNET_RESTORE(); } /* * Count number of vaps in promisc, and issue promisc on * parent respectively. */ void ieee80211_promisc(struct ieee80211vap *vap, bool on) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK_ASSERT(ic); if (on) { if (++ic->ic_promisc == 1) ieee80211_runtask(ic, &ic->ic_promisc_task); } else { KASSERT(ic->ic_promisc > 0, ("%s: ic %p not promisc", __func__, ic)); if (--ic->ic_promisc == 0) ieee80211_runtask(ic, &ic->ic_promisc_task); } } /* * Count number of vaps in allmulti, and issue allmulti on * parent respectively. */ void ieee80211_allmulti(struct ieee80211vap *vap, bool on) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK_ASSERT(ic); if (on) { if (++ic->ic_allmulti == 1) ieee80211_runtask(ic, &ic->ic_mcast_task); } else { KASSERT(ic->ic_allmulti > 0, ("%s: ic %p not allmulti", __func__, ic)); if (--ic->ic_allmulti == 0) ieee80211_runtask(ic, &ic->ic_mcast_task); } } /* * Synchronize flag bit state in the com structure * according to the state of all vap's. This is used, * for example, to handle state changes via ioctls. */ static void ieee80211_syncflag_locked(struct ieee80211com *ic, int flag) { struct ieee80211vap *vap; int bit; IEEE80211_LOCK_ASSERT(ic); bit = 0; TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if (vap->iv_flags & flag) { bit = 1; break; } if (bit) ic->ic_flags |= flag; else ic->ic_flags &= ~flag; } void ieee80211_syncflag(struct ieee80211vap *vap, int flag) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK(ic); if (flag < 0) { flag = -flag; vap->iv_flags &= ~flag; } else vap->iv_flags |= flag; ieee80211_syncflag_locked(ic, flag); IEEE80211_UNLOCK(ic); } /* * Synchronize flags_ht bit state in the com structure * according to the state of all vap's. This is used, * for example, to handle state changes via ioctls. */ static void ieee80211_syncflag_ht_locked(struct ieee80211com *ic, int flag) { struct ieee80211vap *vap; int bit; IEEE80211_LOCK_ASSERT(ic); bit = 0; TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if (vap->iv_flags_ht & flag) { bit = 1; break; } if (bit) ic->ic_flags_ht |= flag; else ic->ic_flags_ht &= ~flag; } void ieee80211_syncflag_ht(struct ieee80211vap *vap, int flag) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK(ic); if (flag < 0) { flag = -flag; vap->iv_flags_ht &= ~flag; } else vap->iv_flags_ht |= flag; ieee80211_syncflag_ht_locked(ic, flag); IEEE80211_UNLOCK(ic); } /* * Synchronize flags_vht bit state in the com structure * according to the state of all vap's. This is used, * for example, to handle state changes via ioctls. */ static void ieee80211_syncflag_vht_locked(struct ieee80211com *ic, int flag) { struct ieee80211vap *vap; int bit; IEEE80211_LOCK_ASSERT(ic); bit = 0; TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if (vap->iv_vht_flags & flag) { bit = 1; break; } if (bit) ic->ic_vht_flags |= flag; else ic->ic_vht_flags &= ~flag; } void ieee80211_syncflag_vht(struct ieee80211vap *vap, int flag) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK(ic); if (flag < 0) { flag = -flag; vap->iv_vht_flags &= ~flag; } else vap->iv_vht_flags |= flag; ieee80211_syncflag_vht_locked(ic, flag); IEEE80211_UNLOCK(ic); } /* * Synchronize flags_ext bit state in the com structure * according to the state of all vap's. This is used, * for example, to handle state changes via ioctls. */ static void ieee80211_syncflag_ext_locked(struct ieee80211com *ic, int flag) { struct ieee80211vap *vap; int bit; IEEE80211_LOCK_ASSERT(ic); bit = 0; TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if (vap->iv_flags_ext & flag) { bit = 1; break; } if (bit) ic->ic_flags_ext |= flag; else ic->ic_flags_ext &= ~flag; } void ieee80211_syncflag_ext(struct ieee80211vap *vap, int flag) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK(ic); if (flag < 0) { flag = -flag; vap->iv_flags_ext &= ~flag; } else vap->iv_flags_ext |= flag; ieee80211_syncflag_ext_locked(ic, flag); IEEE80211_UNLOCK(ic); } static __inline int mapgsm(u_int freq, u_int flags) { freq *= 10; if (flags & IEEE80211_CHAN_QUARTER) freq += 5; else if (flags & IEEE80211_CHAN_HALF) freq += 10; else freq += 20; /* NB: there is no 907/20 wide but leave room */ return (freq - 906*10) / 5; } static __inline int mappsb(u_int freq, u_int flags) { return 37 + ((freq * 10) + ((freq % 5) == 2 ? 5 : 0) - 49400) / 5; } /* * Convert MHz frequency to IEEE channel number. */ int ieee80211_mhz2ieee(u_int freq, u_int flags) { #define IS_FREQ_IN_PSB(_freq) ((_freq) > 4940 && (_freq) < 4990) if (flags & IEEE80211_CHAN_GSM) return mapgsm(freq, flags); if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ if (freq == 2484) return 14; if (freq < 2484) return ((int) freq - 2407) / 5; else return 15 + ((freq - 2512) / 20); } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ if (freq <= 5000) { /* XXX check regdomain? */ if (IS_FREQ_IN_PSB(freq)) return mappsb(freq, flags); return (freq - 4000) / 5; } else return (freq - 5000) / 5; } else { /* either, guess */ if (freq == 2484) return 14; if (freq < 2484) { if (907 <= freq && freq <= 922) return mapgsm(freq, flags); return ((int) freq - 2407) / 5; } if (freq < 5000) { if (IS_FREQ_IN_PSB(freq)) return mappsb(freq, flags); else if (freq > 4900) return (freq - 4000) / 5; else return 15 + ((freq - 2512) / 20); } return (freq - 5000) / 5; } #undef IS_FREQ_IN_PSB } /* * Convert channel to IEEE channel number. */ int ieee80211_chan2ieee(struct ieee80211com *ic, const struct ieee80211_channel *c) { if (c == NULL) { ic_printf(ic, "invalid channel (NULL)\n"); return 0; /* XXX */ } return (c == IEEE80211_CHAN_ANYC ? IEEE80211_CHAN_ANY : c->ic_ieee); } /* * Convert IEEE channel number to MHz frequency. */ u_int ieee80211_ieee2mhz(u_int chan, u_int flags) { if (flags & IEEE80211_CHAN_GSM) return 907 + 5 * (chan / 10); if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ if (chan == 14) return 2484; if (chan < 14) return 2407 + chan*5; else return 2512 + ((chan-15)*20); } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ if (flags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) { chan -= 37; return 4940 + chan*5 + (chan % 5 ? 2 : 0); } return 5000 + (chan*5); } else { /* either, guess */ /* XXX can't distinguish PSB+GSM channels */ if (chan == 14) return 2484; if (chan < 14) /* 0-13 */ return 2407 + chan*5; if (chan < 27) /* 15-26 */ return 2512 + ((chan-15)*20); return 5000 + (chan*5); } } static __inline void set_extchan(struct ieee80211_channel *c) { /* * IEEE Std 802.11-2012, page 1738, subclause 20.3.15.4: * "the secondary channel number shall be 'N + [1,-1] * 4' */ if (c->ic_flags & IEEE80211_CHAN_HT40U) c->ic_extieee = c->ic_ieee + 4; else if (c->ic_flags & IEEE80211_CHAN_HT40D) c->ic_extieee = c->ic_ieee - 4; else c->ic_extieee = 0; } /* * Populate the freq1/freq2 fields as appropriate for VHT channels. * * This for now uses a hard-coded list of 80MHz wide channels. * * For HT20/HT40, freq1 just is the centre frequency of the 40MHz * wide channel we've already decided upon. * * For VHT80 and VHT160, there are only a small number of fixed * 80/160MHz wide channels, so we just use those. * * This is all likely very very wrong - both the regulatory code * and this code needs to ensure that all four channels are * available and valid before the VHT80 (and eight for VHT160) channel * is created. */ struct vht_chan_range { uint16_t freq_start; uint16_t freq_end; }; struct vht_chan_range vht80_chan_ranges[] = { { 5170, 5250 }, { 5250, 5330 }, { 5490, 5570 }, { 5570, 5650 }, { 5650, 5730 }, { 5735, 5815 }, { 5815, 5895 }, { 0, 0 } }; struct vht_chan_range vht160_chan_ranges[] = { { 5170, 5330 }, { 5490, 5650 }, { 5735, 5895 }, { 0, 0 } }; static int set_vht_extchan(struct ieee80211_channel *c) { int i; if (! IEEE80211_IS_CHAN_VHT(c)) return (0); if (IEEE80211_IS_CHAN_VHT80P80(c)) { printf("%s: TODO VHT80+80 channel (ieee=%d, flags=0x%08x)\n", __func__, c->ic_ieee, c->ic_flags); } if (IEEE80211_IS_CHAN_VHT160(c)) { for (i = 0; vht160_chan_ranges[i].freq_start != 0; i++) { if (c->ic_freq >= vht160_chan_ranges[i].freq_start && c->ic_freq < vht160_chan_ranges[i].freq_end) { int midpoint; midpoint = vht160_chan_ranges[i].freq_start + 80; c->ic_vht_ch_freq1 = ieee80211_mhz2ieee(midpoint, c->ic_flags); c->ic_vht_ch_freq2 = 0; #if 0 printf("%s: %d, freq=%d, midpoint=%d, freq1=%d, freq2=%d\n", __func__, c->ic_ieee, c->ic_freq, midpoint, c->ic_vht_ch_freq1, c->ic_vht_ch_freq2); #endif return (1); } } return (0); } if (IEEE80211_IS_CHAN_VHT80(c)) { for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) { if (c->ic_freq >= vht80_chan_ranges[i].freq_start && c->ic_freq < vht80_chan_ranges[i].freq_end) { int midpoint; midpoint = vht80_chan_ranges[i].freq_start + 40; c->ic_vht_ch_freq1 = ieee80211_mhz2ieee(midpoint, c->ic_flags); c->ic_vht_ch_freq2 = 0; #if 0 printf("%s: %d, freq=%d, midpoint=%d, freq1=%d, freq2=%d\n", __func__, c->ic_ieee, c->ic_freq, midpoint, c->ic_vht_ch_freq1, c->ic_vht_ch_freq2); #endif return (1); } } return (0); } if (IEEE80211_IS_CHAN_VHT40(c)) { if (IEEE80211_IS_CHAN_HT40U(c)) c->ic_vht_ch_freq1 = c->ic_ieee + 2; else if (IEEE80211_IS_CHAN_HT40D(c)) c->ic_vht_ch_freq1 = c->ic_ieee - 2; else return (0); return (1); } if (IEEE80211_IS_CHAN_VHT20(c)) { c->ic_vht_ch_freq1 = c->ic_ieee; return (1); } printf("%s: unknown VHT channel type (ieee=%d, flags=0x%08x)\n", __func__, c->ic_ieee, c->ic_flags); return (0); } /* * Return whether the current channel could possibly be a part of * a VHT80/VHT160 channel. * * This doesn't check that the whole range is in the allowed list * according to regulatory. */ static bool is_vht160_valid_freq(uint16_t freq) { int i; for (i = 0; vht160_chan_ranges[i].freq_start != 0; i++) { if (freq >= vht160_chan_ranges[i].freq_start && freq < vht160_chan_ranges[i].freq_end) return (true); } return (false); } static int is_vht80_valid_freq(uint16_t freq) { int i; for (i = 0; vht80_chan_ranges[i].freq_start != 0; i++) { if (freq >= vht80_chan_ranges[i].freq_start && freq < vht80_chan_ranges[i].freq_end) return (1); } return (0); } static int addchan(struct ieee80211_channel chans[], int maxchans, int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower, uint32_t flags) { struct ieee80211_channel *c; if (*nchans >= maxchans) return (ENOBUFS); #if 0 printf("%s: %d of %d: ieee=%d, freq=%d, flags=0x%08x\n", __func__, *nchans, maxchans, ieee, freq, flags); #endif c = &chans[(*nchans)++]; c->ic_ieee = ieee; c->ic_freq = freq != 0 ? freq : ieee80211_ieee2mhz(ieee, flags); c->ic_maxregpower = maxregpower; c->ic_maxpower = 2 * maxregpower; c->ic_flags = flags; c->ic_vht_ch_freq1 = 0; c->ic_vht_ch_freq2 = 0; set_extchan(c); set_vht_extchan(c); return (0); } static int copychan_prev(struct ieee80211_channel chans[], int maxchans, int *nchans, uint32_t flags) { struct ieee80211_channel *c; KASSERT(*nchans > 0, ("channel list is empty\n")); if (*nchans >= maxchans) return (ENOBUFS); #if 0 printf("%s: %d of %d: flags=0x%08x\n", __func__, *nchans, maxchans, flags); #endif c = &chans[(*nchans)++]; c[0] = c[-1]; c->ic_flags = flags; c->ic_vht_ch_freq1 = 0; c->ic_vht_ch_freq2 = 0; set_extchan(c); set_vht_extchan(c); return (0); } /* * XXX VHT-2GHz */ static void getflags_2ghz(const uint8_t bands[], uint32_t flags[], int cbw_flags) { int nmodes; nmodes = 0; if (isset(bands, IEEE80211_MODE_11B)) flags[nmodes++] = IEEE80211_CHAN_B; if (isset(bands, IEEE80211_MODE_11G)) flags[nmodes++] = IEEE80211_CHAN_G; if (isset(bands, IEEE80211_MODE_11NG)) flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT20; if (cbw_flags & NET80211_CBW_FLAG_HT40) { flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40U; flags[nmodes++] = IEEE80211_CHAN_G | IEEE80211_CHAN_HT40D; } flags[nmodes] = 0; } static void getflags_5ghz(const uint8_t bands[], uint32_t flags[], int cbw_flags) { int nmodes; /* * The addchan_list() function seems to expect the flags array to * be in channel width order, so the VHT bits are interspersed * as appropriate to maintain said order. * * It also assumes HT40U is before HT40D. */ nmodes = 0; /* 20MHz */ if (isset(bands, IEEE80211_MODE_11A)) flags[nmodes++] = IEEE80211_CHAN_A; if (isset(bands, IEEE80211_MODE_11NA)) flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20; if (isset(bands, IEEE80211_MODE_VHT_5GHZ)) { flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT20 | IEEE80211_CHAN_VHT20; } /* 40MHz */ if (cbw_flags & NET80211_CBW_FLAG_HT40) flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U; if ((cbw_flags & NET80211_CBW_FLAG_HT40) && isset(bands, IEEE80211_MODE_VHT_5GHZ)) flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U | IEEE80211_CHAN_VHT40U; if (cbw_flags & NET80211_CBW_FLAG_HT40) flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D; if ((cbw_flags & NET80211_CBW_FLAG_HT40) && isset(bands, IEEE80211_MODE_VHT_5GHZ)) flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D | IEEE80211_CHAN_VHT40D; /* 80MHz */ if ((cbw_flags & NET80211_CBW_FLAG_VHT80) && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U | IEEE80211_CHAN_VHT80; flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D | IEEE80211_CHAN_VHT80; } /* VHT160 */ if ((cbw_flags & NET80211_CBW_FLAG_VHT160) && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U | IEEE80211_CHAN_VHT160; flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D | IEEE80211_CHAN_VHT160; } /* VHT80+80 */ if ((cbw_flags & NET80211_CBW_FLAG_VHT80P80) && isset(bands, IEEE80211_MODE_VHT_5GHZ)) { flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40U | IEEE80211_CHAN_VHT80P80; flags[nmodes++] = IEEE80211_CHAN_A | IEEE80211_CHAN_HT40D | IEEE80211_CHAN_VHT80P80; } flags[nmodes] = 0; } static void getflags(const uint8_t bands[], uint32_t flags[], int cbw_flags) { flags[0] = 0; if (isset(bands, IEEE80211_MODE_11A) || isset(bands, IEEE80211_MODE_11NA) || isset(bands, IEEE80211_MODE_VHT_5GHZ)) { if (isset(bands, IEEE80211_MODE_11B) || isset(bands, IEEE80211_MODE_11G) || isset(bands, IEEE80211_MODE_11NG) || isset(bands, IEEE80211_MODE_VHT_2GHZ)) return; getflags_5ghz(bands, flags, cbw_flags); } else getflags_2ghz(bands, flags, cbw_flags); } /* * Add one 20 MHz channel into specified channel list. * You MUST NOT mix bands when calling this. It will not add 5ghz * channels if you have any B/G/N band bit set. * The _cbw() variant does also support HT40/VHT80/160/80+80. */ int ieee80211_add_channel_cbw(struct ieee80211_channel chans[], int maxchans, int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower, uint32_t chan_flags, const uint8_t bands[], int cbw_flags) { uint32_t flags[IEEE80211_MODE_MAX]; int i, error; getflags(bands, flags, cbw_flags); KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); error = addchan(chans, maxchans, nchans, ieee, freq, maxregpower, flags[0] | chan_flags); for (i = 1; flags[i] != 0 && error == 0; i++) { error = copychan_prev(chans, maxchans, nchans, flags[i] | chan_flags); } return (error); } int ieee80211_add_channel(struct ieee80211_channel chans[], int maxchans, int *nchans, uint8_t ieee, uint16_t freq, int8_t maxregpower, uint32_t chan_flags, const uint8_t bands[]) { return (ieee80211_add_channel_cbw(chans, maxchans, nchans, ieee, freq, maxregpower, chan_flags, bands, 0)); } static struct ieee80211_channel * findchannel(struct ieee80211_channel chans[], int nchans, uint16_t freq, uint32_t flags) { struct ieee80211_channel *c; int i; flags &= IEEE80211_CHAN_ALLTURBO; /* brute force search */ for (i = 0; i < nchans; i++) { c = &chans[i]; if (c->ic_freq == freq && (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) return c; } return NULL; } /* * Add 40 MHz channel pair into specified channel list. */ /* XXX VHT */ int ieee80211_add_channel_ht40(struct ieee80211_channel chans[], int maxchans, int *nchans, uint8_t ieee, int8_t maxregpower, uint32_t flags) { struct ieee80211_channel *cent, *extc; uint16_t freq; int error; freq = ieee80211_ieee2mhz(ieee, flags); /* * Each entry defines an HT40 channel pair; find the * center channel, then the extension channel above. */ flags |= IEEE80211_CHAN_HT20; cent = findchannel(chans, *nchans, freq, flags); if (cent == NULL) return (EINVAL); extc = findchannel(chans, *nchans, freq + 20, flags); if (extc == NULL) return (ENOENT); flags &= ~IEEE80211_CHAN_HT; error = addchan(chans, maxchans, nchans, cent->ic_ieee, cent->ic_freq, maxregpower, flags | IEEE80211_CHAN_HT40U); if (error != 0) return (error); error = addchan(chans, maxchans, nchans, extc->ic_ieee, extc->ic_freq, maxregpower, flags | IEEE80211_CHAN_HT40D); return (error); } /* * Fetch the center frequency for the primary channel. */ uint32_t ieee80211_get_channel_center_freq(const struct ieee80211_channel *c) { return (c->ic_freq); } /* * Fetch the center frequency for the primary BAND channel. * * For 5, 10, 20MHz channels it'll be the normally configured channel * frequency. * * For 40MHz, 80MHz, 160MHz channels it will be the centre of the * wide channel, not the centre of the primary channel (that's ic_freq). * * For 80+80MHz channels this will be the centre of the primary * 80MHz channel; the secondary 80MHz channel will be center_freq2(). */ uint32_t ieee80211_get_channel_center_freq1(const struct ieee80211_channel *c) { /* * VHT - use the pre-calculated centre frequency * of the given channel. */ if (IEEE80211_IS_CHAN_VHT(c)) return (ieee80211_ieee2mhz(c->ic_vht_ch_freq1, c->ic_flags)); if (IEEE80211_IS_CHAN_HT40U(c)) { return (c->ic_freq + 10); } if (IEEE80211_IS_CHAN_HT40D(c)) { return (c->ic_freq - 10); } return (c->ic_freq); } /* * For now, no 80+80 support; it will likely always return 0. */ uint32_t ieee80211_get_channel_center_freq2(const struct ieee80211_channel *c) { if (IEEE80211_IS_CHAN_VHT(c) && (c->ic_vht_ch_freq2 != 0)) return (ieee80211_ieee2mhz(c->ic_vht_ch_freq2, c->ic_flags)); return (0); } /* * Adds channels into specified channel list (ieee[] array must be sorted). * Channels are already sorted. */ static int add_chanlist(struct ieee80211_channel chans[], int maxchans, int *nchans, const uint8_t ieee[], int nieee, uint32_t flags[]) { uint16_t freq; int i, j, error; int is_vht; for (i = 0; i < nieee; i++) { freq = ieee80211_ieee2mhz(ieee[i], flags[0]); for (j = 0; flags[j] != 0; j++) { /* * Notes: * + HT40 and VHT40 channels occur together, so * we need to be careful that we actually allow that. * + VHT80, VHT160 will coexist with HT40/VHT40, so * make sure it's not skipped because of the overlap * check used for (V)HT40. */ is_vht = !! (flags[j] & IEEE80211_CHAN_VHT); /* XXX TODO FIXME VHT80P80. */ /* Test for VHT160 analogue to the VHT80 below. */ if (is_vht && flags[j] & IEEE80211_CHAN_VHT160) if (! is_vht160_valid_freq(freq)) continue; /* * Test for VHT80. * XXX This is all very broken right now. * What we /should/ do is: * * + check that the frequency is in the list of * allowed VHT80 ranges; and * + the other 3 channels in the list are actually * also available. */ if (is_vht && flags[j] & IEEE80211_CHAN_VHT80) if (! is_vht80_valid_freq(freq)) continue; /* * Test for (V)HT40. * * This is also a fall through from VHT80; as we only * allow a VHT80 channel if the VHT40 combination is * also valid. If the VHT40 form is not valid then * we certainly can't do VHT80.. */ if (flags[j] & IEEE80211_CHAN_HT40D) /* * Can't have a "lower" channel if we are the * first channel. * * Can't have a "lower" channel if it's below/ * within 20MHz of the first channel. * * Can't have a "lower" channel if the channel * below it is not 20MHz away. */ if (i == 0 || ieee[i] < ieee[0] + 4 || freq - 20 != ieee80211_ieee2mhz(ieee[i] - 4, flags[j])) continue; if (flags[j] & IEEE80211_CHAN_HT40U) /* * Can't have an "upper" channel if we are * the last channel. * * Can't have an "upper" channel be above the * last channel in the list. * * Can't have an "upper" channel if the next * channel according to the math isn't 20MHz * away. (Likely for channel 13/14.) */ if (i == nieee - 1 || ieee[i] + 4 > ieee[nieee - 1] || freq + 20 != ieee80211_ieee2mhz(ieee[i] + 4, flags[j])) continue; if (j == 0) { error = addchan(chans, maxchans, nchans, ieee[i], freq, 0, flags[j]); } else { error = copychan_prev(chans, maxchans, nchans, flags[j]); } if (error != 0) return (error); } } return (0); } int ieee80211_add_channel_list_2ghz(struct ieee80211_channel chans[], int maxchans, int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[], int cbw_flags) { uint32_t flags[IEEE80211_MODE_MAX]; /* XXX no VHT for now */ getflags_2ghz(bands, flags, cbw_flags); KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags)); } int ieee80211_add_channels_default_2ghz(struct ieee80211_channel chans[], int maxchans, int *nchans, const uint8_t bands[], int cbw_flags) { const uint8_t default_chan_list[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }; return (ieee80211_add_channel_list_2ghz(chans, maxchans, nchans, default_chan_list, nitems(default_chan_list), bands, cbw_flags)); } int ieee80211_add_channel_list_5ghz(struct ieee80211_channel chans[], int maxchans, int *nchans, const uint8_t ieee[], int nieee, const uint8_t bands[], int cbw_flags) { /* * XXX-BZ with HT and VHT there is no 1:1 mapping anymore. Review all * uses of IEEE80211_MODE_MAX and add a new #define name for array size. */ uint32_t flags[2 * IEEE80211_MODE_MAX]; getflags_5ghz(bands, flags, cbw_flags); KASSERT(flags[0] != 0, ("%s: no correct mode provided\n", __func__)); return (add_chanlist(chans, maxchans, nchans, ieee, nieee, flags)); } /* * Locate a channel given a frequency+flags. We cache * the previous lookup to optimize switching between two * channels--as happens with dynamic turbo. */ struct ieee80211_channel * ieee80211_find_channel(struct ieee80211com *ic, int freq, int flags) { struct ieee80211_channel *c; flags &= IEEE80211_CHAN_ALLTURBO; c = ic->ic_prevchan; if (c != NULL && c->ic_freq == freq && (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) return c; /* brute force search */ return (findchannel(ic->ic_channels, ic->ic_nchans, freq, flags)); } /* * Locate a channel given a channel number+flags. We cache * the previous lookup to optimize switching between two * channels--as happens with dynamic turbo. */ struct ieee80211_channel * ieee80211_find_channel_byieee(struct ieee80211com *ic, int ieee, int flags) { struct ieee80211_channel *c; int i; flags &= IEEE80211_CHAN_ALLTURBO; c = ic->ic_prevchan; if (c != NULL && c->ic_ieee == ieee && (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) return c; /* brute force search */ for (i = 0; i < ic->ic_nchans; i++) { c = &ic->ic_channels[i]; if (c->ic_ieee == ieee && (c->ic_flags & IEEE80211_CHAN_ALLTURBO) == flags) return c; } return NULL; } /* * Lookup a channel suitable for the given rx status. * * This is used to find a channel for a frame (eg beacon, probe * response) based purely on the received PHY information. * * For now it tries to do it based on R_FREQ / R_IEEE. * This is enough for 11bg and 11a (and thus 11ng/11na) * but it will not be enough for GSM, PSB channels and the * like. It also doesn't know about legacy-turbog and * legacy-turbo modes, which some offload NICs actually * support in weird ways. * * Takes the ic and rxstatus; returns the channel or NULL * if not found. * * XXX TODO: Add support for that when the need arises. */ struct ieee80211_channel * ieee80211_lookup_channel_rxstatus(struct ieee80211vap *vap, const struct ieee80211_rx_stats *rxs) { struct ieee80211com *ic = vap->iv_ic; uint32_t flags; struct ieee80211_channel *c; if (rxs == NULL) return (NULL); /* * Strictly speaking we only use freq for now, * however later on we may wish to just store * the ieee for verification. */ if ((rxs->r_flags & IEEE80211_R_FREQ) == 0) return (NULL); if ((rxs->r_flags & IEEE80211_R_IEEE) == 0) return (NULL); if ((rxs->r_flags & IEEE80211_R_BAND) == 0) return (NULL); /* * If the rx status contains a valid ieee/freq, then * ensure we populate the correct channel information * in rxchan before passing it up to the scan infrastructure. * Offload NICs will pass up beacons from all channels * during background scans. */ /* Determine a band */ switch (rxs->c_band) { case IEEE80211_CHAN_2GHZ: flags = IEEE80211_CHAN_G; break; case IEEE80211_CHAN_5GHZ: flags = IEEE80211_CHAN_A; break; default: if (rxs->c_freq < 3000) { flags = IEEE80211_CHAN_G; } else { flags = IEEE80211_CHAN_A; } break; } /* Channel lookup */ c = ieee80211_find_channel(ic, rxs->c_freq, flags); IEEE80211_DPRINTF(vap, IEEE80211_MSG_INPUT, "%s: freq=%d, ieee=%d, flags=0x%08x; c=%p\n", __func__, (int) rxs->c_freq, (int) rxs->c_ieee, flags, c); return (c); } static void addmedia(struct ifmedia *media, int caps, int addsta, int mode, int mword) { #define ADD(_ic, _s, _o) \ ifmedia_add(media, \ IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) static const u_int mopts[IEEE80211_MODE_MAX] = { [IEEE80211_MODE_AUTO] = IFM_AUTO, [IEEE80211_MODE_11A] = IFM_IEEE80211_11A, [IEEE80211_MODE_11B] = IFM_IEEE80211_11B, [IEEE80211_MODE_11G] = IFM_IEEE80211_11G, [IEEE80211_MODE_FH] = IFM_IEEE80211_FH, [IEEE80211_MODE_TURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, [IEEE80211_MODE_TURBO_G] = IFM_IEEE80211_11G|IFM_IEEE80211_TURBO, [IEEE80211_MODE_STURBO_A] = IFM_IEEE80211_11A|IFM_IEEE80211_TURBO, [IEEE80211_MODE_HALF] = IFM_IEEE80211_11A, /* XXX */ [IEEE80211_MODE_QUARTER] = IFM_IEEE80211_11A, /* XXX */ [IEEE80211_MODE_11NA] = IFM_IEEE80211_11NA, [IEEE80211_MODE_11NG] = IFM_IEEE80211_11NG, [IEEE80211_MODE_VHT_2GHZ] = IFM_IEEE80211_VHT2G, [IEEE80211_MODE_VHT_5GHZ] = IFM_IEEE80211_VHT5G, }; u_int mopt; mopt = mopts[mode]; if (addsta) ADD(ic, mword, mopt); /* STA mode has no cap */ if (caps & IEEE80211_C_IBSS) ADD(media, mword, mopt | IFM_IEEE80211_ADHOC); if (caps & IEEE80211_C_HOSTAP) ADD(media, mword, mopt | IFM_IEEE80211_HOSTAP); if (caps & IEEE80211_C_AHDEMO) ADD(media, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); if (caps & IEEE80211_C_MONITOR) ADD(media, mword, mopt | IFM_IEEE80211_MONITOR); if (caps & IEEE80211_C_WDS) ADD(media, mword, mopt | IFM_IEEE80211_WDS); if (caps & IEEE80211_C_MBSS) ADD(media, mword, mopt | IFM_IEEE80211_MBSS); #undef ADD } /* * Setup the media data structures according to the channel and * rate tables. */ static int ieee80211_media_setup(struct ieee80211com *ic, struct ifmedia *media, int caps, int addsta, ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) { int i, j, rate, maxrate, mword, r; enum ieee80211_phymode mode; const struct ieee80211_rateset *rs; struct ieee80211_rateset allrates; /* * Fill in media characteristics. */ ifmedia_init(media, 0, media_change, media_stat); maxrate = 0; /* * Add media for legacy operating modes. */ memset(&allrates, 0, sizeof(allrates)); for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_11NA; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; addmedia(media, caps, addsta, mode, IFM_AUTO); if (mode == IEEE80211_MODE_AUTO) continue; rs = &ic->ic_sup_rates[mode]; for (i = 0; i < rs->rs_nrates; i++) { rate = rs->rs_rates[i]; mword = ieee80211_rate2media(ic, rate, mode); if (mword == 0) continue; addmedia(media, caps, addsta, mode, mword); /* * Add legacy rate to the collection of all rates. */ r = rate & IEEE80211_RATE_VAL; for (j = 0; j < allrates.rs_nrates; j++) if (allrates.rs_rates[j] == r) break; if (j == allrates.rs_nrates) { /* unique, add to the set */ allrates.rs_rates[j] = r; allrates.rs_nrates++; } rate = (rate & IEEE80211_RATE_VAL) / 2; if (rate > maxrate) maxrate = rate; } } for (i = 0; i < allrates.rs_nrates; i++) { mword = ieee80211_rate2media(ic, allrates.rs_rates[i], IEEE80211_MODE_AUTO); if (mword == 0) continue; /* NB: remove media options from mword */ addmedia(media, caps, addsta, IEEE80211_MODE_AUTO, IFM_SUBTYPE(mword)); } /* * Add HT/11n media. Note that we do not have enough * bits in the media subtype to express the MCS so we * use a "placeholder" media subtype and any fixed MCS * must be specified with a different mechanism. */ for (; mode <= IEEE80211_MODE_11NG; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; addmedia(media, caps, addsta, mode, IFM_AUTO); addmedia(media, caps, addsta, mode, IFM_IEEE80211_MCS); } if (isset(ic->ic_modecaps, IEEE80211_MODE_11NA) || isset(ic->ic_modecaps, IEEE80211_MODE_11NG)) { addmedia(media, caps, addsta, IEEE80211_MODE_AUTO, IFM_IEEE80211_MCS); i = ic->ic_txstream * 8 - 1; if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) && (ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI40)) rate = ieee80211_htrates[i].ht40_rate_400ns; else if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40)) rate = ieee80211_htrates[i].ht40_rate_800ns; else if ((ic->ic_htcaps & IEEE80211_HTCAP_SHORTGI20)) rate = ieee80211_htrates[i].ht20_rate_400ns; else rate = ieee80211_htrates[i].ht20_rate_800ns; if (rate > maxrate) maxrate = rate; } /* * Add VHT media. * XXX-BZ skip "VHT_2GHZ" for now. */ for (mode = IEEE80211_MODE_VHT_5GHZ; mode <= IEEE80211_MODE_VHT_5GHZ; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; addmedia(media, caps, addsta, mode, IFM_AUTO); addmedia(media, caps, addsta, mode, IFM_IEEE80211_VHT); } if (isset(ic->ic_modecaps, IEEE80211_MODE_VHT_5GHZ)) { addmedia(media, caps, addsta, IEEE80211_MODE_AUTO, IFM_IEEE80211_VHT); /* XXX TODO: VHT maxrate */ } return maxrate; } /* XXX inline or eliminate? */ const struct ieee80211_rateset * ieee80211_get_suprates(struct ieee80211com *ic, const struct ieee80211_channel *c) { /* XXX does this work for 11ng basic rates? */ return &ic->ic_sup_rates[ieee80211_chan2mode(c)]; } /* XXX inline or eliminate? */ const struct ieee80211_htrateset * ieee80211_get_suphtrates(struct ieee80211com *ic, const struct ieee80211_channel *c) { return &ic->ic_sup_htrates; } void ieee80211_announce(struct ieee80211com *ic) { int i, rate, mword; enum ieee80211_phymode mode; const struct ieee80211_rateset *rs; /* NB: skip AUTO since it has no rates */ for (mode = IEEE80211_MODE_AUTO+1; mode < IEEE80211_MODE_11NA; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; ic_printf(ic, "%s rates: ", ieee80211_phymode_name[mode]); rs = &ic->ic_sup_rates[mode]; for (i = 0; i < rs->rs_nrates; i++) { mword = ieee80211_rate2media(ic, rs->rs_rates[i], mode); if (mword == 0) continue; rate = ieee80211_media2rate(mword); printf("%s%d%sMbps", (i != 0 ? " " : ""), rate / 2, ((rate & 0x1) != 0 ? ".5" : "")); } printf("\n"); } ieee80211_ht_announce(ic); ieee80211_vht_announce(ic); } void ieee80211_announce_channels(struct ieee80211com *ic) { const struct ieee80211_channel *c; char type; int i, cw; printf("Chan Freq CW RegPwr MinPwr MaxPwr\n"); for (i = 0; i < ic->ic_nchans; i++) { c = &ic->ic_channels[i]; if (IEEE80211_IS_CHAN_ST(c)) type = 'S'; else if (IEEE80211_IS_CHAN_108A(c)) type = 'T'; else if (IEEE80211_IS_CHAN_108G(c)) type = 'G'; else if (IEEE80211_IS_CHAN_HT(c)) type = 'n'; else if (IEEE80211_IS_CHAN_A(c)) type = 'a'; else if (IEEE80211_IS_CHAN_ANYG(c)) type = 'g'; else if (IEEE80211_IS_CHAN_B(c)) type = 'b'; else type = 'f'; if (IEEE80211_IS_CHAN_HT40(c) || IEEE80211_IS_CHAN_TURBO(c)) cw = 40; else if (IEEE80211_IS_CHAN_HALF(c)) cw = 10; else if (IEEE80211_IS_CHAN_QUARTER(c)) cw = 5; else cw = 20; printf("%4d %4d%c %2d%c %6d %4d.%d %4d.%d\n" , c->ic_ieee, c->ic_freq, type , cw , IEEE80211_IS_CHAN_HT40U(c) ? '+' : IEEE80211_IS_CHAN_HT40D(c) ? '-' : ' ' , c->ic_maxregpower , c->ic_minpower / 2, c->ic_minpower & 1 ? 5 : 0 , c->ic_maxpower / 2, c->ic_maxpower & 1 ? 5 : 0 ); } } static int media2mode(const struct ifmedia_entry *ime, uint32_t flags, uint16_t *mode) { switch (IFM_MODE(ime->ifm_media)) { case IFM_IEEE80211_11A: *mode = IEEE80211_MODE_11A; break; case IFM_IEEE80211_11B: *mode = IEEE80211_MODE_11B; break; case IFM_IEEE80211_11G: *mode = IEEE80211_MODE_11G; break; case IFM_IEEE80211_FH: *mode = IEEE80211_MODE_FH; break; case IFM_IEEE80211_11NA: *mode = IEEE80211_MODE_11NA; break; case IFM_IEEE80211_11NG: *mode = IEEE80211_MODE_11NG; break; case IFM_IEEE80211_VHT2G: *mode = IEEE80211_MODE_VHT_2GHZ; break; case IFM_IEEE80211_VHT5G: *mode = IEEE80211_MODE_VHT_5GHZ; break; case IFM_AUTO: *mode = IEEE80211_MODE_AUTO; break; default: return 0; } /* * Turbo mode is an ``option''. * XXX does not apply to AUTO */ if (ime->ifm_media & IFM_IEEE80211_TURBO) { if (*mode == IEEE80211_MODE_11A) { if (flags & IEEE80211_F_TURBOP) *mode = IEEE80211_MODE_TURBO_A; else *mode = IEEE80211_MODE_STURBO_A; } else if (*mode == IEEE80211_MODE_11G) *mode = IEEE80211_MODE_TURBO_G; else return 0; } /* XXX HT40 +/- */ return 1; } /* * Handle a media change request on the vap interface. */ int ieee80211_media_change(struct ifnet *ifp) { struct ieee80211vap *vap = ifp->if_softc; struct ifmedia_entry *ime = vap->iv_media.ifm_cur; uint16_t newmode; if (!media2mode(ime, vap->iv_flags, &newmode)) return EINVAL; if (vap->iv_des_mode != newmode) { vap->iv_des_mode = newmode; /* XXX kick state machine if up+running */ } return 0; } /* * Common code to calculate the media status word * from the operating mode and channel state. */ static int media_status(enum ieee80211_opmode opmode, const struct ieee80211_channel *chan) { int status; status = IFM_IEEE80211; switch (opmode) { case IEEE80211_M_STA: break; case IEEE80211_M_IBSS: status |= IFM_IEEE80211_ADHOC; break; case IEEE80211_M_HOSTAP: status |= IFM_IEEE80211_HOSTAP; break; case IEEE80211_M_MONITOR: status |= IFM_IEEE80211_MONITOR; break; case IEEE80211_M_AHDEMO: status |= IFM_IEEE80211_ADHOC | IFM_FLAG0; break; case IEEE80211_M_WDS: status |= IFM_IEEE80211_WDS; break; case IEEE80211_M_MBSS: status |= IFM_IEEE80211_MBSS; break; } if (IEEE80211_IS_CHAN_VHT_5GHZ(chan)) { status |= IFM_IEEE80211_VHT5G; } else if (IEEE80211_IS_CHAN_VHT_2GHZ(chan)) { status |= IFM_IEEE80211_VHT2G; } else if (IEEE80211_IS_CHAN_HTA(chan)) { status |= IFM_IEEE80211_11NA; } else if (IEEE80211_IS_CHAN_HTG(chan)) { status |= IFM_IEEE80211_11NG; } else if (IEEE80211_IS_CHAN_A(chan)) { status |= IFM_IEEE80211_11A; } else if (IEEE80211_IS_CHAN_B(chan)) { status |= IFM_IEEE80211_11B; } else if (IEEE80211_IS_CHAN_ANYG(chan)) { status |= IFM_IEEE80211_11G; } else if (IEEE80211_IS_CHAN_FHSS(chan)) { status |= IFM_IEEE80211_FH; } /* XXX else complain? */ if (IEEE80211_IS_CHAN_TURBO(chan)) status |= IFM_IEEE80211_TURBO; #if 0 if (IEEE80211_IS_CHAN_HT20(chan)) status |= IFM_IEEE80211_HT20; if (IEEE80211_IS_CHAN_HT40(chan)) status |= IFM_IEEE80211_HT40; #endif return status; } void ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) { struct ieee80211vap *vap = ifp->if_softc; struct ieee80211com *ic = vap->iv_ic; enum ieee80211_phymode mode; imr->ifm_status = IFM_AVALID; /* * NB: use the current channel's mode to lock down a xmit * rate only when running; otherwise we may have a mismatch * in which case the rate will not be convertible. */ if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) { imr->ifm_status |= IFM_ACTIVE; mode = ieee80211_chan2mode(ic->ic_curchan); } else mode = IEEE80211_MODE_AUTO; imr->ifm_active = media_status(vap->iv_opmode, ic->ic_curchan); /* * Calculate a current rate if possible. */ if (vap->iv_txparms[mode].ucastrate != IEEE80211_FIXED_RATE_NONE) { /* * A fixed rate is set, report that. */ imr->ifm_active |= ieee80211_rate2media(ic, vap->iv_txparms[mode].ucastrate, mode); } else if (vap->iv_opmode == IEEE80211_M_STA) { /* * In station mode report the current transmit rate. */ imr->ifm_active |= ieee80211_rate2media(ic, - vap->iv_bss->ni_txrate, mode); + ieee80211_node_get_txrate_dot11rate(vap->iv_bss), mode); } else imr->ifm_active |= IFM_AUTO; if (imr->ifm_status & IFM_ACTIVE) imr->ifm_current = imr->ifm_active; } /* * Set the current phy mode and recalculate the active channel * set based on the available channels for this mode. Also * select a new default/current channel if the current one is * inappropriate for this mode. */ int ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) { /* * Adjust basic rates in 11b/11g supported rate set. * Note that if operating on a hal/quarter rate channel * this is a noop as those rates sets are different * and used instead. */ if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B) ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode); ic->ic_curmode = mode; ieee80211_reset_erp(ic); /* reset global ERP state */ return 0; } /* * Return the phy mode for with the specified channel. */ enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *chan) { if (IEEE80211_IS_CHAN_VHT_2GHZ(chan)) return IEEE80211_MODE_VHT_2GHZ; else if (IEEE80211_IS_CHAN_VHT_5GHZ(chan)) return IEEE80211_MODE_VHT_5GHZ; else if (IEEE80211_IS_CHAN_HTA(chan)) return IEEE80211_MODE_11NA; else if (IEEE80211_IS_CHAN_HTG(chan)) return IEEE80211_MODE_11NG; else if (IEEE80211_IS_CHAN_108G(chan)) return IEEE80211_MODE_TURBO_G; else if (IEEE80211_IS_CHAN_ST(chan)) return IEEE80211_MODE_STURBO_A; else if (IEEE80211_IS_CHAN_TURBO(chan)) return IEEE80211_MODE_TURBO_A; else if (IEEE80211_IS_CHAN_HALF(chan)) return IEEE80211_MODE_HALF; else if (IEEE80211_IS_CHAN_QUARTER(chan)) return IEEE80211_MODE_QUARTER; else if (IEEE80211_IS_CHAN_A(chan)) return IEEE80211_MODE_11A; else if (IEEE80211_IS_CHAN_ANYG(chan)) return IEEE80211_MODE_11G; else if (IEEE80211_IS_CHAN_B(chan)) return IEEE80211_MODE_11B; else if (IEEE80211_IS_CHAN_FHSS(chan)) return IEEE80211_MODE_FH; /* NB: should not get here */ printf("%s: cannot map channel to mode; freq %u flags 0x%x\n", __func__, chan->ic_freq, chan->ic_flags); return IEEE80211_MODE_11B; } struct ratemedia { u_int match; /* rate + mode */ u_int media; /* if_media rate */ }; static int findmedia(const struct ratemedia rates[], int n, u_int match) { int i; for (i = 0; i < n; i++) if (rates[i].match == match) return rates[i].media; return IFM_AUTO; } /* * Convert IEEE80211 rate value to ifmedia subtype. * Rate is either a legacy rate in units of 0.5Mbps * or an MCS index. */ int ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) { static const struct ratemedia rates[] = { { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, { 6 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM3 }, { 9 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM4 }, { 54 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM27 }, /* NB: OFDM72 doesn't really exist so we don't handle it */ }; static const struct ratemedia htrates[] = { { 0, IFM_IEEE80211_MCS }, { 1, IFM_IEEE80211_MCS }, { 2, IFM_IEEE80211_MCS }, { 3, IFM_IEEE80211_MCS }, { 4, IFM_IEEE80211_MCS }, { 5, IFM_IEEE80211_MCS }, { 6, IFM_IEEE80211_MCS }, { 7, IFM_IEEE80211_MCS }, { 8, IFM_IEEE80211_MCS }, { 9, IFM_IEEE80211_MCS }, { 10, IFM_IEEE80211_MCS }, { 11, IFM_IEEE80211_MCS }, { 12, IFM_IEEE80211_MCS }, { 13, IFM_IEEE80211_MCS }, { 14, IFM_IEEE80211_MCS }, { 15, IFM_IEEE80211_MCS }, { 16, IFM_IEEE80211_MCS }, { 17, IFM_IEEE80211_MCS }, { 18, IFM_IEEE80211_MCS }, { 19, IFM_IEEE80211_MCS }, { 20, IFM_IEEE80211_MCS }, { 21, IFM_IEEE80211_MCS }, { 22, IFM_IEEE80211_MCS }, { 23, IFM_IEEE80211_MCS }, { 24, IFM_IEEE80211_MCS }, { 25, IFM_IEEE80211_MCS }, { 26, IFM_IEEE80211_MCS }, { 27, IFM_IEEE80211_MCS }, { 28, IFM_IEEE80211_MCS }, { 29, IFM_IEEE80211_MCS }, { 30, IFM_IEEE80211_MCS }, { 31, IFM_IEEE80211_MCS }, { 32, IFM_IEEE80211_MCS }, { 33, IFM_IEEE80211_MCS }, { 34, IFM_IEEE80211_MCS }, { 35, IFM_IEEE80211_MCS }, { 36, IFM_IEEE80211_MCS }, { 37, IFM_IEEE80211_MCS }, { 38, IFM_IEEE80211_MCS }, { 39, IFM_IEEE80211_MCS }, { 40, IFM_IEEE80211_MCS }, { 41, IFM_IEEE80211_MCS }, { 42, IFM_IEEE80211_MCS }, { 43, IFM_IEEE80211_MCS }, { 44, IFM_IEEE80211_MCS }, { 45, IFM_IEEE80211_MCS }, { 46, IFM_IEEE80211_MCS }, { 47, IFM_IEEE80211_MCS }, { 48, IFM_IEEE80211_MCS }, { 49, IFM_IEEE80211_MCS }, { 50, IFM_IEEE80211_MCS }, { 51, IFM_IEEE80211_MCS }, { 52, IFM_IEEE80211_MCS }, { 53, IFM_IEEE80211_MCS }, { 54, IFM_IEEE80211_MCS }, { 55, IFM_IEEE80211_MCS }, { 56, IFM_IEEE80211_MCS }, { 57, IFM_IEEE80211_MCS }, { 58, IFM_IEEE80211_MCS }, { 59, IFM_IEEE80211_MCS }, { 60, IFM_IEEE80211_MCS }, { 61, IFM_IEEE80211_MCS }, { 62, IFM_IEEE80211_MCS }, { 63, IFM_IEEE80211_MCS }, { 64, IFM_IEEE80211_MCS }, { 65, IFM_IEEE80211_MCS }, { 66, IFM_IEEE80211_MCS }, { 67, IFM_IEEE80211_MCS }, { 68, IFM_IEEE80211_MCS }, { 69, IFM_IEEE80211_MCS }, { 70, IFM_IEEE80211_MCS }, { 71, IFM_IEEE80211_MCS }, { 72, IFM_IEEE80211_MCS }, { 73, IFM_IEEE80211_MCS }, { 74, IFM_IEEE80211_MCS }, { 75, IFM_IEEE80211_MCS }, { 76, IFM_IEEE80211_MCS }, }; static const struct ratemedia vhtrates[] = { { 0, IFM_IEEE80211_VHT }, { 1, IFM_IEEE80211_VHT }, { 2, IFM_IEEE80211_VHT }, { 3, IFM_IEEE80211_VHT }, { 4, IFM_IEEE80211_VHT }, { 5, IFM_IEEE80211_VHT }, { 6, IFM_IEEE80211_VHT }, { 7, IFM_IEEE80211_VHT }, { 8, IFM_IEEE80211_VHT }, /* Optional. */ { 9, IFM_IEEE80211_VHT }, /* Optional. */ #if 0 /* Some QCA and BRCM seem to support this; offspec. */ { 10, IFM_IEEE80211_VHT }, { 11, IFM_IEEE80211_VHT }, #endif }; int m; /* * Check 11ac/11n rates first for match as an MCS. */ if (mode == IEEE80211_MODE_VHT_5GHZ) { if (rate & IFM_IEEE80211_VHT) { rate &= ~IFM_IEEE80211_VHT; m = findmedia(vhtrates, nitems(vhtrates), rate); if (m != IFM_AUTO) return (m | IFM_IEEE80211_VHT); } } else if (mode == IEEE80211_MODE_11NA) { if (rate & IEEE80211_RATE_MCS) { rate &= ~IEEE80211_RATE_MCS; m = findmedia(htrates, nitems(htrates), rate); if (m != IFM_AUTO) return m | IFM_IEEE80211_11NA; } } else if (mode == IEEE80211_MODE_11NG) { /* NB: 12 is ambiguous, it will be treated as an MCS */ if (rate & IEEE80211_RATE_MCS) { rate &= ~IEEE80211_RATE_MCS; m = findmedia(htrates, nitems(htrates), rate); if (m != IFM_AUTO) return m | IFM_IEEE80211_11NG; } } rate &= IEEE80211_RATE_VAL; switch (mode) { case IEEE80211_MODE_11A: case IEEE80211_MODE_HALF: /* XXX good 'nuf */ case IEEE80211_MODE_QUARTER: case IEEE80211_MODE_11NA: case IEEE80211_MODE_TURBO_A: case IEEE80211_MODE_STURBO_A: return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11A); case IEEE80211_MODE_11B: return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11B); case IEEE80211_MODE_FH: return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_FH); case IEEE80211_MODE_AUTO: /* NB: ic may be NULL for some drivers */ if (ic != NULL && ic->ic_phytype == IEEE80211_T_FH) return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_FH); /* NB: hack, 11g matches both 11b+11a rates */ /* fall thru... */ case IEEE80211_MODE_11G: case IEEE80211_MODE_11NG: case IEEE80211_MODE_TURBO_G: return findmedia(rates, nitems(rates), rate | IFM_IEEE80211_11G); case IEEE80211_MODE_VHT_2GHZ: case IEEE80211_MODE_VHT_5GHZ: /* XXX TODO: need to figure out mapping for VHT rates */ return IFM_AUTO; } return IFM_AUTO; } int ieee80211_media2rate(int mword) { static const int ieeerates[] = { -1, /* IFM_AUTO */ 0, /* IFM_MANUAL */ 0, /* IFM_NONE */ 2, /* IFM_IEEE80211_FH1 */ 4, /* IFM_IEEE80211_FH2 */ 2, /* IFM_IEEE80211_DS1 */ 4, /* IFM_IEEE80211_DS2 */ 11, /* IFM_IEEE80211_DS5 */ 22, /* IFM_IEEE80211_DS11 */ 44, /* IFM_IEEE80211_DS22 */ 12, /* IFM_IEEE80211_OFDM6 */ 18, /* IFM_IEEE80211_OFDM9 */ 24, /* IFM_IEEE80211_OFDM12 */ 36, /* IFM_IEEE80211_OFDM18 */ 48, /* IFM_IEEE80211_OFDM24 */ 72, /* IFM_IEEE80211_OFDM36 */ 96, /* IFM_IEEE80211_OFDM48 */ 108, /* IFM_IEEE80211_OFDM54 */ 144, /* IFM_IEEE80211_OFDM72 */ 0, /* IFM_IEEE80211_DS354k */ 0, /* IFM_IEEE80211_DS512k */ 6, /* IFM_IEEE80211_OFDM3 */ 9, /* IFM_IEEE80211_OFDM4 */ 54, /* IFM_IEEE80211_OFDM27 */ -1, /* IFM_IEEE80211_MCS */ -1, /* IFM_IEEE80211_VHT */ }; return IFM_SUBTYPE(mword) < nitems(ieeerates) ? ieeerates[IFM_SUBTYPE(mword)] : 0; } /* * The following hash function is adapted from "Hash Functions" by Bob Jenkins * ("Algorithm Alley", Dr. Dobbs Journal, September 1997). */ #define mix(a, b, c) \ do { \ a -= b; a -= c; a ^= (c >> 13); \ b -= c; b -= a; b ^= (a << 8); \ c -= a; c -= b; c ^= (b >> 13); \ a -= b; a -= c; a ^= (c >> 12); \ b -= c; b -= a; b ^= (a << 16); \ c -= a; c -= b; c ^= (b >> 5); \ a -= b; a -= c; a ^= (c >> 3); \ b -= c; b -= a; b ^= (a << 10); \ c -= a; c -= b; c ^= (b >> 15); \ } while (/*CONSTCOND*/0) uint32_t ieee80211_mac_hash(const struct ieee80211com *ic, const uint8_t addr[IEEE80211_ADDR_LEN]) { uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = ic->ic_hash_key; b += addr[5] << 8; b += addr[4]; a += addr[3] << 24; a += addr[2] << 16; a += addr[1] << 8; a += addr[0]; mix(a, b, c); return c; } #undef mix char ieee80211_channel_type_char(const struct ieee80211_channel *c) { if (IEEE80211_IS_CHAN_ST(c)) return 'S'; if (IEEE80211_IS_CHAN_108A(c)) return 'T'; if (IEEE80211_IS_CHAN_108G(c)) return 'G'; if (IEEE80211_IS_CHAN_VHT(c)) return 'v'; if (IEEE80211_IS_CHAN_HT(c)) return 'n'; if (IEEE80211_IS_CHAN_A(c)) return 'a'; if (IEEE80211_IS_CHAN_ANYG(c)) return 'g'; if (IEEE80211_IS_CHAN_B(c)) return 'b'; return 'f'; } /* * Determine whether the given key in the given VAP is a global key. * (key index 0..3, shared between all stations on a VAP.) * * This is either a WEP key or a GROUP key. * * Note this will NOT return true if it is a IGTK key. */ bool ieee80211_is_key_global(const struct ieee80211vap *vap, const struct ieee80211_key *key) { return (&vap->iv_nw_keys[0] <= key && key < &vap->iv_nw_keys[IEEE80211_WEP_NKID]); } /* * Determine whether the given key in the given VAP is a unicast key. */ bool ieee80211_is_key_unicast(const struct ieee80211vap *vap, const struct ieee80211_key *key) { /* * This is a short-cut for now; eventually we will need * to support multiple unicast keys, IGTK, etc) so we * will absolutely need to fix the key flags. */ return (!ieee80211_is_key_global(vap, key)); } diff --git a/sys/net80211/ieee80211_adhoc.c b/sys/net80211/ieee80211_adhoc.c index d252b75899a2..77e5a2d99904 100644 --- a/sys/net80211/ieee80211_adhoc.c +++ b/sys/net80211/ieee80211_adhoc.c @@ -1,1057 +1,1056 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * IEEE 802.11 IBSS mode support. */ #include "opt_inet.h" #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #ifdef IEEE80211_SUPPORT_TDMA #include #endif #include #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) static void adhoc_vattach(struct ieee80211vap *); static int adhoc_newstate(struct ieee80211vap *, enum ieee80211_state, int); static int adhoc_input(struct ieee80211_node *, struct mbuf *, const struct ieee80211_rx_stats *, int, int); static void adhoc_recv_mgmt(struct ieee80211_node *, struct mbuf *, int subtype, const struct ieee80211_rx_stats *, int, int); static void ahdemo_recv_mgmt(struct ieee80211_node *, struct mbuf *, int subtype, const struct ieee80211_rx_stats *rxs, int, int); static void adhoc_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); void ieee80211_adhoc_attach(struct ieee80211com *ic) { ic->ic_vattach[IEEE80211_M_IBSS] = adhoc_vattach; ic->ic_vattach[IEEE80211_M_AHDEMO] = adhoc_vattach; } void ieee80211_adhoc_detach(struct ieee80211com *ic) { } static void adhoc_vdetach(struct ieee80211vap *vap) { } static void adhoc_vattach(struct ieee80211vap *vap) { vap->iv_newstate = adhoc_newstate; vap->iv_input = adhoc_input; if (vap->iv_opmode == IEEE80211_M_IBSS) vap->iv_recv_mgmt = adhoc_recv_mgmt; else vap->iv_recv_mgmt = ahdemo_recv_mgmt; vap->iv_recv_ctl = adhoc_recv_ctl; vap->iv_opdetach = adhoc_vdetach; #ifdef IEEE80211_SUPPORT_TDMA /* * Throw control to tdma support. Note we do this * after setting up our callbacks so it can piggyback * on top of us. */ if (vap->iv_caps & IEEE80211_C_TDMA) ieee80211_tdma_vattach(vap); #endif } static void sta_leave(void *arg, struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; if (ni != vap->iv_bss) ieee80211_node_leave(ni); } /* * IEEE80211_M_IBSS+IEEE80211_M_AHDEMO vap state machine handler. */ static int adhoc_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(vap->iv_ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ if (ostate != IEEE80211_S_SCAN) ieee80211_cancel_scan(vap); /* background scan */ ni = vap->iv_bss; /* NB: no reference held */ switch (nstate) { case IEEE80211_S_INIT: switch (ostate) { case IEEE80211_S_SCAN: ieee80211_cancel_scan(vap); break; default: break; } if (ostate != IEEE80211_S_INIT) { /* NB: optimize INIT -> INIT case */ ieee80211_reset_bss(vap); } break; case IEEE80211_S_SCAN: switch (ostate) { case IEEE80211_S_RUN: /* beacon miss */ /* purge station table; entries are stale */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, sta_leave, NULL); /* fall thru... */ case IEEE80211_S_INIT: if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { /* * Already have a channel; bypass the * scan and startup immediately. */ ieee80211_create_ibss(vap, ieee80211_ht_adjust_channel(ic, vap->iv_des_chan, vap->iv_flags_ht)); break; } /* * Initiate a scan. We can come here as a result * of an IEEE80211_IOC_SCAN_REQ too in which case * the vap will be marked with IEEE80211_FEXT_SCANREQ * and the scan request parameters will be present * in iv_scanreq. Otherwise we do the default. */ if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { ieee80211_check_scan(vap, vap->iv_scanreq_flags, vap->iv_scanreq_duration, vap->iv_scanreq_mindwell, vap->iv_scanreq_maxdwell, vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; } else ieee80211_check_scan_current(vap); break; case IEEE80211_S_SCAN: /* * This can happen because of a change in state * that requires a reset. Trigger a new scan * unless we're in manual roaming mode in which * case an application must issue an explicit request. */ if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) ieee80211_check_scan_current(vap); break; default: goto invalid; } break; case IEEE80211_S_RUN: if (vap->iv_flags & IEEE80211_F_WPA) { /* XXX validate prerequisites */ } switch (ostate) { case IEEE80211_S_INIT: /* * Already have a channel; bypass the * scan and startup immediately. * Note that ieee80211_create_ibss will call * back to do a RUN->RUN state change. */ ieee80211_create_ibss(vap, ieee80211_ht_adjust_channel(ic, ic->ic_curchan, vap->iv_flags_ht)); /* NB: iv_bss is changed on return */ ni = vap->iv_bss; break; case IEEE80211_S_SCAN: #ifdef IEEE80211_DEBUG if (ieee80211_msg_debug(vap)) { ieee80211_note(vap, "synchronized with %s ssid ", ether_sprintf(ni->ni_bssid)); ieee80211_print_essid(vap->iv_bss->ni_essid, ni->ni_esslen); - /* XXX MCS/HT */ - printf(" channel %d start %uMb\n", + printf(" channel %d start %uMbit/s\n", ieee80211_chan2ieee(ic, ic->ic_curchan), - IEEE80211_RATE2MBS(ni->ni_txrate)); + ieee80211_node_get_txrate_kbit(ni) / 1000); } #endif break; case IEEE80211_S_RUN: /* IBSS merge */ break; default: goto invalid; } /* * When 802.1x is not in use mark the port authorized * at this point so traffic can flow. */ if (ni->ni_authmode != IEEE80211_AUTH_8021X) ieee80211_node_authorize(ni); /* * Fake association when joining an existing bss. */ if (!IEEE80211_ADDR_EQ(ni->ni_macaddr, vap->iv_myaddr) && ic->ic_newassoc != NULL) ic->ic_newassoc(ni, ostate != IEEE80211_S_RUN); break; case IEEE80211_S_SLEEP: vap->iv_sta_ps(vap, 0); break; default: invalid: IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: unexpected state transition %s -> %s\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate]); break; } return 0; } /* * Decide if a received management frame should be * printed when debugging is enabled. This filters some * of the less interesting frames that come frequently * (e.g. beacons). */ static __inline int doprint(struct ieee80211vap *vap, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BEACON: return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); case IEEE80211_FC0_SUBTYPE_PROBE_REQ: return 1; } return 1; } /* * Process a received frame. The node associated with the sender * should be supplied. If nothing was found in the node table then * the caller is assumed to supply a reference to iv_bss instead. * The RSSI and a timestamp are also supplied. The RSSI data is used * during AP scanning to select a AP to associate with; it can have * any units so long as values have consistent units and higher values * mean ``better signal''. The receive timestamp is currently not used * by the 802.11 layer. */ static int adhoc_input(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ifnet *ifp = vap->iv_ifp; struct ieee80211_frame *wh; struct ieee80211_key *key; struct ether_header *eh; int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ uint8_t dir, type, subtype, qos; uint8_t *bssid; int is_hw_decrypted = 0; int has_decrypted = 0; /* * Some devices do hardware decryption all the way through * to pretending the frame wasn't encrypted in the first place. * So, tag it appropriately so it isn't discarded inappropriately. */ if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED)) is_hw_decrypted = 1; if (m->m_flags & M_AMPDU_MPDU) { /* * Fastpath for A-MPDU reorder q resubmission. Frames * w/ M_AMPDU_MPDU marked have already passed through * here but were received out of order and been held on * the reorder queue. When resubmitted they are marked * with the M_AMPDU_MPDU flag and we can bypass most of * the normal processing. */ wh = mtod(m, struct ieee80211_frame *); type = IEEE80211_FC0_TYPE_DATA; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; subtype = IEEE80211_FC0_SUBTYPE_QOS_DATA; hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ goto resubmit_ampdu; } KASSERT(ni != NULL, ("null node")); ni->ni_inact = ni->ni_inact_reload; type = -1; /* undefined */ if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (1): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } /* * Bit of a cheat here, we use a pointer for a 3-address * frame format but don't reference fields past outside * ieee80211_frame_min w/o first validating the data is * present. */ wh = mtod(m, struct ieee80211_frame *); if (!IEEE80211_IS_FC0_CHECK_VER(wh, IEEE80211_FC0_VERSION_0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", wh->i_fc[0], wh->i_fc[1]); vap->iv_stats.is_rx_badversion++; goto err; } dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { if (dir != IEEE80211_FC1_DIR_NODS) bssid = wh->i_addr1; else if (type == IEEE80211_FC0_TYPE_CTL) bssid = wh->i_addr1; else { if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (2): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } bssid = wh->i_addr3; } /* * Validate the bssid. */ if (!(type == IEEE80211_FC0_TYPE_MGT && (subtype == IEEE80211_FC0_SUBTYPE_BEACON || subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)) && !IEEE80211_ADDR_EQ(bssid, vap->iv_bss->ni_bssid) && !IEEE80211_ADDR_EQ(bssid, ifp->if_broadcastaddr)) { /* not interested in */ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, bssid, NULL, "%s", "not to bss"); vap->iv_stats.is_rx_wrongbss++; goto out; } /* * Data frame, cons up a node when it doesn't * exist. This should probably done after an ACL check. */ if (type == IEEE80211_FC0_TYPE_DATA && ni == vap->iv_bss && !IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { /* * Beware of frames that come in too early; we * can receive broadcast frames and creating sta * entries will blow up because there is no bss * channel yet. */ if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "not in RUN state (%s)", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_badstate++; goto err; } /* * Fake up a node for this newly discovered member * of the IBSS. * * Note: This doesn't "upgrade" the node to 11n; * that will happen after a probe request/response * exchange. */ ni = ieee80211_fakeup_adhoc_node(vap, wh->i_addr2); if (ni == NULL) { /* NB: stat kept for alloc failure */ goto err; } } IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; if (IEEE80211_HAS_SEQ(type, subtype) && IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { uint8_t tid = ieee80211_gettid(wh); if (IEEE80211_QOS_HAS_SEQ(wh) && TID_TO_WME_AC(tid) >= WME_AC_VI) ic->ic_wme.wme_hipri_traffic++; if (! ieee80211_check_rxseq(ni, wh, bssid, rxs)) goto out; } } switch (type) { case IEEE80211_FC0_TYPE_DATA: hdrspace = ieee80211_hdrspace(ic, wh); if (m->m_len < hdrspace && (m = m_pullup(m, hdrspace)) == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "data too short: expecting %u", hdrspace); vap->iv_stats.is_rx_tooshort++; goto out; /* XXX */ } if (dir != IEEE80211_FC1_DIR_NODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto out; } /* XXX no power-save support */ /* * Handle A-MPDU re-ordering. If the frame is to be * processed directly then ieee80211_ampdu_reorder * will return 0; otherwise it has consumed the mbuf * and we should do nothing more with it. */ if ((m->m_flags & M_AMPDU) && ieee80211_ampdu_reorder(ni, m, rxs) != 0) { m = NULL; goto out; } resubmit_ampdu: /* * Handle privacy requirements. Note that we * must not be preempted from here until after * we (potentially) call ieee80211_crypto_demic; * otherwise we may violate assumptions in the * crypto cipher modules used to do delayed update * of replay sequence numbers. */ if (is_hw_decrypted || IEEE80211_IS_PROTECTED(wh)) { if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { /* * Discard encrypted frames when privacy is off. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "WEP", "%s", "PRIVACY off"); vap->iv_stats.is_rx_noprivacy++; IEEE80211_NODE_STAT(ni, rx_noprivacy); goto out; } if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) { /* NB: stats+msgs handled in crypto_decap */ IEEE80211_NODE_STAT(ni, rx_wepfail); goto out; } wh = mtod(m, struct ieee80211_frame *); wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; has_decrypted = 1; } else { /* XXX M_WEP and IEEE80211_F_PRIVACY */ key = NULL; } /* * Save QoS bits for use below--before we strip the header. */ if (subtype == IEEE80211_FC0_SUBTYPE_QOS_DATA) qos = ieee80211_getqos(wh)[0]; else qos = 0; /* * Next up, any fragmentation. */ if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { m = ieee80211_defrag(ni, m, hdrspace, has_decrypted); if (m == NULL) { /* Fragment dropped or frame not complete yet */ goto out; } } wh = NULL; /* no longer valid, catch any uses */ /* * Next strip any MSDU crypto bits. */ if (!ieee80211_crypto_demic(vap, key, m, 0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "demic error"); vap->iv_stats.is_rx_demicfail++; IEEE80211_NODE_STAT(ni, rx_demicfail); goto out; } /* copy to listener after decrypt */ if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); need_tap = 0; /* * Finally, strip the 802.11 header. */ m = ieee80211_decap(vap, m, hdrspace, qos); if (m == NULL) { /* XXX mask bit to check for both */ /* don't count Null data frames as errors */ if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) goto out; IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "decap error"); vap->iv_stats.is_rx_decap++; IEEE80211_NODE_STAT(ni, rx_decap); goto err; } if (!(qos & IEEE80211_QOS_AMSDU)) eh = mtod(m, struct ether_header *); else eh = NULL; if (!ieee80211_node_is_authorized(ni)) { /* * Deny any non-PAE frames received prior to * authorization. For open/shared-key * authentication the port is mark authorized * after authentication completes. For 802.1x * the port is not marked authorized by the * authenticator until the handshake has completed. */ if (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "unauthorized or " "unknown port: ether type 0x%x len %u", eh == NULL ? -1 : eh->ether_type, m->m_pkthdr.len); vap->iv_stats.is_rx_unauth++; IEEE80211_NODE_STAT(ni, rx_unauth); goto err; } } else { /* * When denying unencrypted frames, discard * any non-PAE frames received without encryption. */ if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && ((has_decrypted == 0) && (m->m_flags & M_WEP) == 0) && (is_hw_decrypted == 0) && (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE))) { /* * Drop unencrypted frames. */ vap->iv_stats.is_rx_unencrypted++; IEEE80211_NODE_STAT(ni, rx_unencrypted); goto out; } } /* XXX require HT? */ if (qos & IEEE80211_QOS_AMSDU) { m = ieee80211_decap_amsdu(ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; } else { #ifdef IEEE80211_SUPPORT_SUPERG m = ieee80211_decap_fastframe(vap, ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; #endif } if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap != NULL) ieee80211_deliver_data(ni->ni_wdsvap, ni, m); else ieee80211_deliver_data(vap, ni, m); return IEEE80211_FC0_TYPE_DATA; case IEEE80211_FC0_TYPE_MGT: vap->iv_stats.is_rx_mgmt++; IEEE80211_NODE_STAT(ni, rx_mgmt); if (dir != IEEE80211_FC1_DIR_NODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto err; } if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "mgt", "too short: len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } #ifdef IEEE80211_DEBUG if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || ieee80211_msg_dumppkts(vap)) { if_printf(ifp, "received %s from %s rssi %d\n", ieee80211_mgt_subtype_name(subtype), ether_sprintf(wh->i_addr2), rssi); } #endif if (IEEE80211_IS_PROTECTED(wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "WEP set but not permitted"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ goto out; } vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); goto out; case IEEE80211_FC0_TYPE_CTL: vap->iv_stats.is_rx_ctl++; IEEE80211_NODE_STAT(ni, rx_ctrl); vap->iv_recv_ctl(ni, m, subtype); goto out; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "bad", "frame type 0x%x", type); /* should not come here */ break; } err: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); out: if (m != NULL) { if (need_tap && ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); m_freem(m); } return type; } static int is11bclient(const uint8_t *rates, const uint8_t *xrates) { static const uint32_t brates = (1<<2*1)|(1<<2*2)|(1<<11)|(1<<2*11); int i; /* NB: the 11b clients we care about will not have xrates */ if (xrates != NULL || rates == NULL) return 0; for (i = 0; i < rates[1]; i++) { int r = rates[2+i] & IEEE80211_RATE_VAL; if (r > 2*11 || ((1<ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_channel *rxchan = ic->ic_curchan; struct ieee80211_frame *wh; uint8_t *frm, *efrm; uint8_t *ssid, *rates, *xrates; #if 0 int ht_state_change = 0; #endif wh = mtod(m0, struct ieee80211_frame *); frm = (uint8_t *)&wh[1]; efrm = mtod(m0, uint8_t *) + m0->m_len; IEEE80211_DPRINTF(vap, IEEE80211_MSG_INPUT | IEEE80211_MSG_DEBUG, "%s: recv mgmt frame, addr2=%6D, ni=%p (%6D) fc=%.02x %.02x\n", __func__, wh->i_addr2, ":", ni, ni->ni_macaddr, ":", wh->i_fc[0], wh->i_fc[1]); switch (subtype) { case IEEE80211_FC0_SUBTYPE_PROBE_RESP: case IEEE80211_FC0_SUBTYPE_BEACON: { struct ieee80211_scanparams scan; struct ieee80211_channel *c; /* * We process beacon/probe response * frames to discover neighbors. */ if (rxs != NULL) { c = ieee80211_lookup_channel_rxstatus(vap, rxs); if (c != NULL) rxchan = c; } if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) return; /* * Count frame now that we know it's to be processed. */ if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { vap->iv_stats.is_rx_beacon++; /* XXX remove */ IEEE80211_NODE_STAT(ni, rx_beacons); } else IEEE80211_NODE_STAT(ni, rx_proberesp); /* * If scanning, just pass information to the scan module. */ if (ic->ic_flags & IEEE80211_F_SCAN) { if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { /* * Actively scanning a channel marked passive; * send a probe request now that we know there * is 802.11 traffic present. * * XXX check if the beacon we recv'd gives * us what we need and suppress the probe req */ ieee80211_probe_curchan(vap, true); ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; } ieee80211_add_scan(vap, rxchan, &scan, wh, subtype, rssi, nf); return; } if (scan.capinfo & IEEE80211_CAPINFO_IBSS) { if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { /* * Create a new entry in the neighbor table. * * XXX TODO: * * Here we're not scanning; so if we have an * SSID then make sure it matches our SSID. * Otherwise this code will match on all IBSS * beacons/probe requests for all SSIDs, * filling the node table with nodes that * aren't ours. */ if (ieee80211_ibss_node_check_new(ni, &scan)) { ni = ieee80211_add_neighbor(vap, wh, &scan); /* * Send a probe request so we announce 11n * capabilities. */ ieee80211_send_probereq(ni, /* node */ vap->iv_myaddr, /* SA */ ni->ni_macaddr, /* DA */ vap->iv_bss->ni_bssid, /* BSSID */ vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); /* SSID */ } else ni = NULL; /* * Send a probe request so we announce 11n * capabilities. * * Don't do this if we're scanning. */ if (! (ic->ic_flags & IEEE80211_F_SCAN)) ieee80211_send_probereq(ni, /* node */ vap->iv_myaddr, /* SA */ ni->ni_macaddr, /* DA */ vap->iv_bss->ni_bssid, /* BSSID */ vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); /* SSID */ } else if (ni->ni_capinfo == 0) { /* * Update faked node created on transmit. * Note this also updates the tsf. */ ieee80211_init_neighbor(ni, wh, &scan); /* * Send a probe request so we announce 11n * capabilities. */ ieee80211_send_probereq(ni, /* node */ vap->iv_myaddr, /* SA */ ni->ni_macaddr, /* DA */ vap->iv_bss->ni_bssid, /* BSSID */ vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); /* SSID */ } else { /* * Record tsf for potential resync. */ memcpy(ni->ni_tstamp.data, scan.tstamp, sizeof(ni->ni_tstamp)); } /* * This isn't enabled yet - otherwise it would * update the HT parameters and channel width * from any node, which could lead to lots of * strange behaviour if the 11n nodes aren't * exactly configured to match. */ #if 0 if (scan.htcap != NULL && scan.htinfo != NULL && (vap->iv_flags_ht & IEEE80211_FHT_HT)) { ieee80211_ht_updateparams(ni, scan.htcap, scan.htinfo)); if (ieee80211_ht_updateparams_final(ni, scan.htcap, scan.htinfo)) ht_state_change = 1; } /* XXX same for VHT? */ #endif if (ni != NULL) { IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; } /* * Same here - the channel width change should * be applied to the specific peer node, not * to the ic. Ie, the interface configuration * should stay in its current channel width; * but it should change the rate control and * any queued frames for the given node only. * * Since there's no (current) way to inform * the driver that a channel width change has * occurred for a single node, just stub this * out. */ #if 0 if (ht_state_change) ieee80211_update_chw(ic); #endif } break; } case IEEE80211_FC0_SUBTYPE_PROBE_REQ: if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; return; } if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { /* frame must be directed */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not unicast"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ return; } /* * prreq frame format * [tlv] ssid * [tlv] supported rates * [tlv] extended supported rates */ ssid = rates = xrates = NULL; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); switch (*frm) { case IEEE80211_ELEMID_SSID: ssid = frm; break; case IEEE80211_ELEMID_RATES: rates = frm; break; case IEEE80211_ELEMID_XRATES: xrates = frm; break; } frm += frm[1] + 2; } IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); if (xrates != NULL) IEEE80211_VERIFY_ELEMENT(xrates, IEEE80211_RATE_MAXSIZE - rates[1], return); IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return); if ((vap->iv_flags & IEEE80211_F_HIDESSID) && ssid[1] == 0) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "no ssid with ssid suppression enabled"); vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/ return; } /* XXX find a better class or define it's own */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, "%s", "recv probe req"); /* * Some legacy 11b clients cannot hack a complete * probe response frame. When the request includes * only a bare-bones rate set, communicate this to * the transmit side. */ ieee80211_send_proberesp(vap, wh->i_addr2, is11bclient(rates, xrates) ? IEEE80211_SEND_LEGACY_11B : 0); /* * Note: we don't benefit from stashing the probe request * IEs away to use for IBSS negotiation, because we * typically don't get all of the IEs. */ break; case IEEE80211_FC0_SUBTYPE_ACTION: case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: if ((ni == vap->iv_bss) && !IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "unknown node"); vap->iv_stats.is_rx_mgtdiscard++; } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT | IEEE80211_MSG_DEBUG, wh, NULL, "%s", "not for us"); vap->iv_stats.is_rx_mgtdiscard++; } else if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT | IEEE80211_MSG_DEBUG, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; } else { if (ieee80211_parse_action(ni, m0) == 0) (void)ic->ic_recv_action(ni, wh, frm, efrm); } break; case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: case IEEE80211_FC0_SUBTYPE_TIMING_ADV: case IEEE80211_FC0_SUBTYPE_ATIM: case IEEE80211_FC0_SUBTYPE_DISASSOC: case IEEE80211_FC0_SUBTYPE_AUTH: case IEEE80211_FC0_SUBTYPE_DEAUTH: IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not handled"); vap->iv_stats.is_rx_mgtdiscard++; break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "mgt", "subtype 0x%x not handled", subtype); vap->iv_stats.is_rx_badsubtype++; break; } } #undef IEEE80211_VERIFY_LENGTH #undef IEEE80211_VERIFY_ELEMENT static void ahdemo_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; /* * Process management frames when scanning; useful for doing * a site-survey. */ if (ic->ic_flags & IEEE80211_F_SCAN) adhoc_recv_mgmt(ni, m0, subtype, rxs, rssi, nf); else { #ifdef IEEE80211_DEBUG struct ieee80211_frame *wh; wh = mtod(m0, struct ieee80211_frame *); #endif switch (subtype) { case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: case IEEE80211_FC0_SUBTYPE_PROBE_REQ: case IEEE80211_FC0_SUBTYPE_PROBE_RESP: case IEEE80211_FC0_SUBTYPE_TIMING_ADV: case IEEE80211_FC0_SUBTYPE_BEACON: case IEEE80211_FC0_SUBTYPE_ATIM: case IEEE80211_FC0_SUBTYPE_DISASSOC: case IEEE80211_FC0_SUBTYPE_AUTH: case IEEE80211_FC0_SUBTYPE_DEAUTH: case IEEE80211_FC0_SUBTYPE_ACTION: case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not handled"); vap->iv_stats.is_rx_mgtdiscard++; break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "mgt", "subtype 0x%x not handled", subtype); vap->iv_stats.is_rx_badsubtype++; break; } } } static void adhoc_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BAR: ieee80211_recv_bar(ni, m); break; } } diff --git a/sys/net80211/ieee80211_amrr.c b/sys/net80211/ieee80211_amrr.c index 386a3de92a74..d366bf71e367 100644 --- a/sys/net80211/ieee80211_amrr.c +++ b/sys/net80211/ieee80211_amrr.c @@ -1,494 +1,498 @@ /* $OpenBSD: ieee80211_amrr.c,v 1.1 2006/06/17 19:07:19 damien Exp $ */ /*- * Copyright (c) 2010 Rui Paulo * Copyright (c) 2006 * Damien Bergamini * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include /*- * Naive implementation of the Adaptive Multi Rate Retry algorithm: * * "IEEE 802.11 Rate Adaptation: A Practical Approach" * Mathieu Lacage, Hossein Manshaei, Thierry Turletti * INRIA Sophia - Projet Planete * http://www-sop.inria.fr/rapports/sophia/RR-5208.html */ #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #define is_success(amn) \ ((amn)->amn_retrycnt < (amn)->amn_txcnt / 10) #define is_failure(amn) \ ((amn)->amn_retrycnt > (amn)->amn_txcnt / 3) #define is_enough(amn) \ ((amn)->amn_txcnt > 10) static void amrr_setinterval(const struct ieee80211vap *, int); static void amrr_init(struct ieee80211vap *); static void amrr_deinit(struct ieee80211vap *); static void amrr_node_init(struct ieee80211_node *); static void amrr_node_deinit(struct ieee80211_node *); static int amrr_update(struct ieee80211_amrr *, struct ieee80211_amrr_node *, struct ieee80211_node *); static int amrr_rate(struct ieee80211_node *, void *, uint32_t); static void amrr_tx_complete(const struct ieee80211_node *, const struct ieee80211_ratectl_tx_status *); static void amrr_tx_update_cb(void *, struct ieee80211_node *); static void amrr_tx_update(struct ieee80211vap *vap, struct ieee80211_ratectl_tx_stats *); static void amrr_sysctlattach(struct ieee80211vap *, struct sysctl_ctx_list *, struct sysctl_oid *); static void amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s); /* number of references from net80211 layer */ static int nrefs = 0; static const struct ieee80211_ratectl amrr = { .ir_name = "amrr", .ir_attach = NULL, .ir_detach = NULL, .ir_init = amrr_init, .ir_deinit = amrr_deinit, .ir_node_init = amrr_node_init, .ir_node_deinit = amrr_node_deinit, .ir_rate = amrr_rate, .ir_tx_complete = amrr_tx_complete, .ir_tx_update = amrr_tx_update, .ir_setinterval = amrr_setinterval, .ir_node_stats = amrr_node_stats, }; IEEE80211_RATECTL_MODULE(amrr, 1); IEEE80211_RATECTL_ALG(amrr, IEEE80211_RATECTL_AMRR, amrr); static void amrr_setinterval(const struct ieee80211vap *vap, int msecs) { struct ieee80211_amrr *amrr = vap->iv_rs; if (!amrr) return; if (msecs < 100) msecs = 100; amrr->amrr_interval = msecs_to_ticks(msecs); } static void amrr_init(struct ieee80211vap *vap) { struct ieee80211_amrr *amrr; KASSERT(vap->iv_rs == NULL, ("%s called multiple times", __func__)); nrefs++; /* XXX locking */ amrr = vap->iv_rs = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr), M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (amrr == NULL) { if_printf(vap->iv_ifp, "couldn't alloc ratectl structure\n"); return; } amrr->amrr_min_success_threshold = IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD; amrr->amrr_max_success_threshold = IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD; amrr_setinterval(vap, 500 /* ms */); amrr_sysctlattach(vap, vap->iv_sysctl, vap->iv_oid); } static void amrr_deinit(struct ieee80211vap *vap) { KASSERT(nrefs > 0, ("imbalanced attach/detach")); IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL); vap->iv_rs = NULL; /* guard */ nrefs--; /* XXX locking */ } static void amrr_node_init(struct ieee80211_node *ni) { const struct ieee80211_rateset *rs = NULL; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_amrr *amrr = vap->iv_rs; struct ieee80211_amrr_node *amn; uint8_t rate; if (!amrr) { if_printf(vap->iv_ifp, "ratectl structure was not allocated, " "per-node structure allocation skipped\n"); return; } if (ni->ni_rctls == NULL) { ni->ni_rctls = amn = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr_node), M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (amn == NULL) { if_printf(vap->iv_ifp, "couldn't alloc per-node ratectl " "structure\n"); return; } } else amn = ni->ni_rctls; amn->amn_amrr = amrr; amn->amn_success = 0; amn->amn_recovery = 0; amn->amn_txcnt = amn->amn_retrycnt = 0; amn->amn_success_threshold = amrr->amrr_min_success_threshold; /* 11n or not? Pick the right rateset */ if (ieee80211_ht_check_tx_ht(ni)) { /* XXX ew */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "%s: 11n node", __func__); rs = (struct ieee80211_rateset *) &ni->ni_htrates; } else { IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "%s: non-11n node", __func__); rs = &ni->ni_rates; } /* Initial rate - lowest */ rate = rs->rs_rates[0]; /* XXX clear the basic rate flag if it's not 11n */ if (! ieee80211_ht_check_tx_ht(ni)) rate &= IEEE80211_RATE_VAL; /* pick initial rate from the rateset - HT or otherwise */ /* Pick something low that's likely to succeed */ for (amn->amn_rix = rs->rs_nrates - 1; amn->amn_rix > 0; amn->amn_rix--) { /* legacy - anything < 36mbit, stop searching */ /* 11n - stop at MCS4 */ if (ieee80211_ht_check_tx_ht(ni)) { if ((rs->rs_rates[amn->amn_rix] & 0x1f) < 4) break; } else if ((rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL) <= 72) break; } rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; /* if the rate is an 11n rate, ensure the MCS bit is set */ if (ieee80211_ht_check_tx_ht(ni)) rate |= IEEE80211_RATE_MCS; /* Assign initial rate from the rateset */ - ni->ni_txrate = rate; + ieee80211_node_set_txrate_dot11rate(ni, rate); amn->amn_ticks = ticks; /* XXX TODO: we really need a rate-to-string method */ /* XXX TODO: non-11n rate should be divided by two.. */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "AMRR: nrates=%d, initial rate %s%d", rs->rs_nrates, ieee80211_ht_check_tx_ht(ni) ? "MCS " : "", rate & IEEE80211_RATE_VAL); } static void amrr_node_deinit(struct ieee80211_node *ni) { IEEE80211_FREE(ni->ni_rctls, M_80211_RATECTL); } static int amrr_update(struct ieee80211_amrr *amrr, struct ieee80211_amrr_node *amn, struct ieee80211_node *ni) { int rix = amn->amn_rix; const struct ieee80211_rateset *rs = NULL; KASSERT(is_enough(amn), ("txcnt %d", amn->amn_txcnt)); /* 11n or not? Pick the right rateset */ if (ieee80211_ht_check_tx_ht(ni)) { /* XXX ew */ rs = (struct ieee80211_rateset *) &ni->ni_htrates; } else { rs = &ni->ni_rates; } /* XXX TODO: we really need a rate-to-string method */ /* XXX TODO: non-11n rate should be divided by two.. */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "AMRR: current rate %d, txcnt=%d, retrycnt=%d", rs->rs_rates[rix] & IEEE80211_RATE_VAL, amn->amn_txcnt, amn->amn_retrycnt); /* * XXX This is totally bogus for 11n, as although high MCS * rates for each stream may be failing, the next stream * should be checked. * * Eg, if MCS5 is ok but MCS6/7 isn't, and we can go up to * MCS23, we should skip 6/7 and try 8 onwards. */ if (is_success(amn)) { amn->amn_success++; if (amn->amn_success >= amn->amn_success_threshold && rix + 1 < rs->rs_nrates) { amn->amn_recovery = 1; amn->amn_success = 0; rix++; /* XXX TODO: we really need a rate-to-string method */ /* XXX TODO: non-11n rate should be divided by two.. */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "AMRR increasing rate %d (txcnt=%d retrycnt=%d)", rs->rs_rates[rix] & IEEE80211_RATE_VAL, amn->amn_txcnt, amn->amn_retrycnt); } else { amn->amn_recovery = 0; } } else if (is_failure(amn)) { amn->amn_success = 0; if (rix > 0) { if (amn->amn_recovery) { amn->amn_success_threshold *= 2; if (amn->amn_success_threshold > amrr->amrr_max_success_threshold) amn->amn_success_threshold = amrr->amrr_max_success_threshold; } else { amn->amn_success_threshold = amrr->amrr_min_success_threshold; } rix--; /* XXX TODO: we really need a rate-to-string method */ /* XXX TODO: non-11n rate should be divided by two.. */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, "AMRR decreasing rate %d (txcnt=%d retrycnt=%d)", rs->rs_rates[rix] & IEEE80211_RATE_VAL, amn->amn_txcnt, amn->amn_retrycnt); } amn->amn_recovery = 0; } /* reset counters */ amn->amn_txcnt = 0; amn->amn_retrycnt = 0; return rix; } /* * Return the rate index to use in sending a data frame. * Update our internal state if it's been long enough. * If the rate changes we also update ni_txrate to match. */ static int amrr_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused) { struct ieee80211_amrr_node *amn = ni->ni_rctls; struct ieee80211_amrr *amrr; const struct ieee80211_rateset *rs = NULL; int rix; /* XXX should return -1 here, but drivers may not expect this... */ if (!amn) { - ni->ni_txrate = ni->ni_rates.rs_rates[0]; + ieee80211_node_set_txrate_dot11rate(ni, + ni->ni_rates.rs_rates[0]); return 0; } amrr = amn->amn_amrr; /* 11n or not? Pick the right rateset */ if (ieee80211_ht_check_tx_ht(ni)) { /* XXX ew */ rs = (struct ieee80211_rateset *) &ni->ni_htrates; } else { rs = &ni->ni_rates; } if (is_enough(amn) && (ticks - amn->amn_ticks) > amrr->amrr_interval) { rix = amrr_update(amrr, amn, ni); if (rix != amn->amn_rix) { + uint8_t dot11Rate; /* update public rate */ - ni->ni_txrate = rs->rs_rates[rix]; + dot11Rate = rs->rs_rates[rix]; /* XXX strip basic rate flag from txrate, if non-11n */ if (ieee80211_ht_check_tx_ht(ni)) - ni->ni_txrate |= IEEE80211_RATE_MCS; + dot11Rate |= IEEE80211_RATE_MCS; else - ni->ni_txrate &= IEEE80211_RATE_VAL; + dot11Rate &= IEEE80211_RATE_VAL; + ieee80211_node_set_txrate_dot11rate(ni, dot11Rate); + amn->amn_rix = rix; } amn->amn_ticks = ticks; } else rix = amn->amn_rix; return rix; } /* * Update statistics with tx complete status. Ok is non-zero * if the packet is known to be ACK'd. Retries has the number * retransmissions (i.e. xmit attempts - 1). */ static void amrr_tx_complete(const struct ieee80211_node *ni, const struct ieee80211_ratectl_tx_status *status) { struct ieee80211_amrr_node *amn = ni->ni_rctls; int retries; if (!amn) return; retries = 0; if (status->flags & IEEE80211_RATECTL_STATUS_LONG_RETRY) retries = status->long_retries; amn->amn_txcnt++; if (status->status == IEEE80211_RATECTL_TX_SUCCESS) amn->amn_success++; amn->amn_retrycnt += retries; } static void amrr_tx_update_cb(void *arg, struct ieee80211_node *ni) { struct ieee80211_ratectl_tx_stats *stats = arg; struct ieee80211_amrr_node *amn = ni->ni_rctls; int txcnt, success, retrycnt; if (!amn) return; txcnt = stats->nframes; success = stats->nsuccess; retrycnt = 0; if (stats->flags & IEEE80211_RATECTL_TX_STATS_RETRIES) retrycnt = stats->nretries; amn->amn_txcnt += txcnt; amn->amn_success += success; amn->amn_retrycnt += retrycnt; } /* * Set tx count/retry statistics explicitly. Intended for * drivers that poll the device for statistics maintained * in the device. */ static void amrr_tx_update(struct ieee80211vap *vap, struct ieee80211_ratectl_tx_stats *stats) { if (stats->flags & IEEE80211_RATECTL_TX_STATS_NODE) amrr_tx_update_cb(stats, stats->ni); else { ieee80211_iterate_nodes_vap(&vap->iv_ic->ic_sta, vap, amrr_tx_update_cb, stats); } } static int amrr_sysctl_interval(SYSCTL_HANDLER_ARGS) { struct ieee80211vap *vap = arg1; struct ieee80211_amrr *amrr = vap->iv_rs; int msecs, error; if (!amrr) return ENOMEM; msecs = ticks_to_msecs(amrr->amrr_interval); error = sysctl_handle_int(oidp, &msecs, 0, req); if (error || !req->newptr) return error; amrr_setinterval(vap, msecs); return 0; } static void amrr_sysctlattach(struct ieee80211vap *vap, struct sysctl_ctx_list *ctx, struct sysctl_oid *tree) { struct ieee80211_amrr *amrr = vap->iv_rs; if (!amrr) return; SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "amrr_rate_interval", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, vap, 0, amrr_sysctl_interval, "I", "amrr operation interval (ms)"); /* XXX bounds check values */ SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "amrr_max_sucess_threshold", CTLFLAG_RW, &amrr->amrr_max_success_threshold, 0, ""); SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "amrr_min_sucess_threshold", CTLFLAG_RW, &amrr->amrr_min_success_threshold, 0, ""); } static void amrr_print_node_rate(struct ieee80211_amrr_node *amn, struct ieee80211_node *ni, struct sbuf *s) { int rate; struct ieee80211_rateset *rs; if (ieee80211_ht_check_tx_ht(ni)) { rs = (struct ieee80211_rateset *) &ni->ni_htrates; rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; sbuf_printf(s, "rate: MCS %d\n", rate); } else { rs = &ni->ni_rates; rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; sbuf_printf(s, "rate: %d Mbit\n", rate / 2); } } static void amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s) { struct ieee80211_amrr_node *amn = ni->ni_rctls; /* XXX TODO: check locking? */ if (!amn) return; amrr_print_node_rate(amn, ni, s); sbuf_printf(s, "ticks: %d\n", amn->amn_ticks); sbuf_printf(s, "txcnt: %u\n", amn->amn_txcnt); sbuf_printf(s, "success: %u\n", amn->amn_success); sbuf_printf(s, "success_threshold: %u\n", amn->amn_success_threshold); sbuf_printf(s, "recovery: %u\n", amn->amn_recovery); sbuf_printf(s, "retry_cnt: %u\n", amn->amn_retrycnt); } diff --git a/sys/net80211/ieee80211_hostap.c b/sys/net80211/ieee80211_hostap.c index 1dce9a6b5923..76c419f5bdf8 100644 --- a/sys/net80211/ieee80211_hostap.c +++ b/sys/net80211/ieee80211_hostap.c @@ -1,2484 +1,2481 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * IEEE 802.11 HOSTAP mode support. */ #include "opt_inet.h" #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #include #include #include /* for parse_wmeie */ -#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) - static void hostap_vattach(struct ieee80211vap *); static int hostap_newstate(struct ieee80211vap *, enum ieee80211_state, int); static int hostap_input(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_rx_stats *, int rssi, int nf); static void hostap_deliver_data(struct ieee80211vap *, struct ieee80211_node *, struct mbuf *); static void hostap_recv_mgmt(struct ieee80211_node *, struct mbuf *, int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf); static void hostap_recv_ctl(struct ieee80211_node *, struct mbuf *, int); void ieee80211_hostap_attach(struct ieee80211com *ic) { ic->ic_vattach[IEEE80211_M_HOSTAP] = hostap_vattach; } void ieee80211_hostap_detach(struct ieee80211com *ic) { } static void hostap_vdetach(struct ieee80211vap *vap) { } static void hostap_vattach(struct ieee80211vap *vap) { vap->iv_newstate = hostap_newstate; vap->iv_input = hostap_input; vap->iv_recv_mgmt = hostap_recv_mgmt; vap->iv_recv_ctl = hostap_recv_ctl; vap->iv_opdetach = hostap_vdetach; vap->iv_deliver_data = hostap_deliver_data; vap->iv_recv_pspoll = ieee80211_recv_pspoll; } static void sta_disassoc(void *arg, struct ieee80211_node *ni) { if (ni->ni_associd != 0) { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC, IEEE80211_REASON_ASSOC_LEAVE); ieee80211_node_leave(ni); } } static void sta_csa(void *arg, struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; if (ni->ni_associd != 0) if (ni->ni_inact > vap->iv_inact_init) { ni->ni_inact = vap->iv_inact_init; IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, "%s: inact %u", __func__, ni->ni_inact); } } static void sta_drop(void *arg, struct ieee80211_node *ni) { if (ni->ni_associd != 0) ieee80211_node_leave(ni); } /* * Does a channel change require associated stations to re-associate * so protocol state is correct. This is used when doing CSA across * bands or similar (e.g. HT -> legacy). */ static int isbandchange(struct ieee80211com *ic) { return ((ic->ic_bsschan->ic_flags ^ ic->ic_csa_newchan->ic_flags) & (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_HALF | IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HT)) != 0; } /* * IEEE80211_M_HOSTAP vap state machine handler. */ static int hostap_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic = vap->iv_ic; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ if (ostate != IEEE80211_S_SCAN) ieee80211_cancel_scan(vap); /* background scan */ switch (nstate) { case IEEE80211_S_INIT: switch (ostate) { case IEEE80211_S_SCAN: ieee80211_cancel_scan(vap); break; case IEEE80211_S_CAC: ieee80211_dfs_cac_stop(vap); break; case IEEE80211_S_RUN: ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, sta_disassoc, NULL); break; default: break; } if (ostate != IEEE80211_S_INIT) { /* NB: optimize INIT -> INIT case */ ieee80211_reset_bss(vap); } if (vap->iv_auth->ia_detach != NULL) vap->iv_auth->ia_detach(vap); break; case IEEE80211_S_SCAN: switch (ostate) { case IEEE80211_S_CSA: case IEEE80211_S_RUN: ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, sta_disassoc, NULL); /* * Clear overlapping BSS state; the beacon frame * will be reconstructed on transition to the RUN * state and the timeout routines check if the flag * is set before doing anything so this is sufficient. */ vap->iv_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; vap->iv_flags_ht &= ~IEEE80211_FHT_NONHT_PR; /* XXX TODO: schedule deferred update? */ /* fall thru... */ case IEEE80211_S_CAC: /* * NB: We may get here because of a manual channel * change in which case we need to stop CAC * XXX no need to stop if ostate RUN but it's ok */ ieee80211_dfs_cac_stop(vap); /* fall thru... */ case IEEE80211_S_INIT: if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { /* * Already have a channel; bypass the * scan and startup immediately. * ieee80211_create_ibss will call back to * move us to RUN state. */ ieee80211_create_ibss(vap, vap->iv_des_chan); break; } /* * Initiate a scan. We can come here as a result * of an IEEE80211_IOC_SCAN_REQ too in which case * the vap will be marked with IEEE80211_FEXT_SCANREQ * and the scan request parameters will be present * in iv_scanreq. Otherwise we do the default. */ if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { ieee80211_check_scan(vap, vap->iv_scanreq_flags, vap->iv_scanreq_duration, vap->iv_scanreq_mindwell, vap->iv_scanreq_maxdwell, vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; } else ieee80211_check_scan_current(vap); break; case IEEE80211_S_SCAN: /* * A state change requires a reset; scan. */ ieee80211_check_scan_current(vap); break; default: break; } break; case IEEE80211_S_CAC: /* * Start CAC on a DFS channel. We come here when starting * a bss on a DFS channel (see ieee80211_create_ibss). */ ieee80211_dfs_cac_start(vap); break; case IEEE80211_S_RUN: if (vap->iv_flags & IEEE80211_F_WPA) { /* XXX validate prerequisites */ } switch (ostate) { case IEEE80211_S_INIT: /* * Already have a channel; bypass the * scan and startup immediately. * Note that ieee80211_create_ibss will call * back to do a RUN->RUN state change. */ ieee80211_create_ibss(vap, ieee80211_ht_adjust_channel(ic, ic->ic_curchan, vap->iv_flags_ht)); /* NB: iv_bss is changed on return */ break; case IEEE80211_S_CAC: /* * NB: This is the normal state change when CAC * expires and no radar was detected; no need to * clear the CAC timer as it's already expired. */ /* fall thru... */ case IEEE80211_S_CSA: /* * Shorten inactivity timer of associated stations * to weed out sta's that don't follow a CSA. */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, sta_csa, NULL); /* * Update bss node channel to reflect where * we landed after CSA. */ ieee80211_node_set_chan(vap->iv_bss, ieee80211_ht_adjust_channel(ic, ic->ic_curchan, ieee80211_htchanflags(vap->iv_bss->ni_chan))); /* XXX bypass debug msgs */ break; case IEEE80211_S_SCAN: case IEEE80211_S_RUN: #ifdef IEEE80211_DEBUG if (ieee80211_msg_debug(vap)) { struct ieee80211_node *ni = vap->iv_bss; ieee80211_note(vap, "synchronized with %s ssid ", ether_sprintf(ni->ni_bssid)); ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); - /* XXX MCS/HT */ - printf(" channel %d start %uMb\n", + printf(" channel %d start %uMbit/s\n", ieee80211_chan2ieee(ic, ic->ic_curchan), - IEEE80211_RATE2MBS(ni->ni_txrate)); + ieee80211_node_get_txrate_kbit(ni) / 1000); } #endif break; default: break; } /* * Start/stop the authenticator. We delay until here * to allow configuration to happen out of order. */ if (vap->iv_auth->ia_attach != NULL) { /* XXX check failure */ vap->iv_auth->ia_attach(vap); } else if (vap->iv_auth->ia_detach != NULL) { vap->iv_auth->ia_detach(vap); } ieee80211_node_authorize(vap->iv_bss); break; case IEEE80211_S_CSA: if (ostate == IEEE80211_S_RUN && isbandchange(ic)) { /* * On a ``band change'' silently drop associated * stations as they must re-associate before they * can pass traffic (as otherwise protocol state * such as capabilities and the negotiated rate * set may/will be wrong). */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, sta_drop, NULL); } break; default: break; } return 0; } static void hostap_deliver_data(struct ieee80211vap *vap, struct ieee80211_node *ni, struct mbuf *m) { struct ether_header *eh = mtod(m, struct ether_header *); struct ifnet *ifp = vap->iv_ifp; /* clear driver/net80211 flags before passing up */ m->m_flags &= ~(M_MCAST | M_BCAST); m_clrprotoflags(m); KASSERT(vap->iv_opmode == IEEE80211_M_HOSTAP, ("gack, opmode %d", vap->iv_opmode)); /* * Do accounting. */ if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); IEEE80211_NODE_STAT(ni, rx_data); IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len); if (ETHER_IS_MULTICAST(eh->ether_dhost)) { m->m_flags |= M_MCAST; /* XXX M_BCAST? */ IEEE80211_NODE_STAT(ni, rx_mcast); } else IEEE80211_NODE_STAT(ni, rx_ucast); /* perform as a bridge within the AP */ if ((vap->iv_flags & IEEE80211_F_NOBRIDGE) == 0) { struct mbuf *mcopy = NULL; if (m->m_flags & M_MCAST) { mcopy = m_dup(m, IEEE80211_M_NOWAIT); if (mcopy == NULL) if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); else mcopy->m_flags |= M_MCAST; } else { /* * Check if the destination is associated with the * same vap and authorized to receive traffic. * Beware of traffic destined for the vap itself; * sending it will not work; just let it be delivered * normally. */ struct ieee80211_node *sta = ieee80211_find_vap_node( &vap->iv_ic->ic_sta, vap, eh->ether_dhost); if (sta != NULL) { if (ieee80211_node_is_authorized(sta)) { /* * Beware of sending to ourself; this * needs to happen via the normal * input path. */ if (sta != vap->iv_bss) { mcopy = m; m = NULL; } } else { vap->iv_stats.is_rx_unauth++; IEEE80211_NODE_STAT(sta, rx_unauth); } ieee80211_free_node(sta); } } if (mcopy != NULL) (void) ieee80211_vap_xmitpkt(vap, mcopy); } if (m != NULL) { struct epoch_tracker et; /* * Mark frame as coming from vap's interface. */ m->m_pkthdr.rcvif = ifp; if (m->m_flags & M_MCAST) { /* * Spam DWDS vap's w/ multicast traffic. */ /* XXX only if dwds in use? */ ieee80211_dwds_mcast(vap, m); } if (ni->ni_vlan != 0) { /* attach vlan tag */ m->m_pkthdr.ether_vtag = ni->ni_vlan; m->m_flags |= M_VLANTAG; } NET_EPOCH_ENTER(et); ifp->if_input(ifp, m); NET_EPOCH_EXIT(et); } } /* * Decide if a received management frame should be * printed when debugging is enabled. This filters some * of the less interesting frames that come frequently * (e.g. beacons). */ static __inline int doprint(struct ieee80211vap *vap, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BEACON: return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); case IEEE80211_FC0_SUBTYPE_PROBE_REQ: return 0; } return 1; } /* * Process a received frame. The node associated with the sender * should be supplied. If nothing was found in the node table then * the caller is assumed to supply a reference to iv_bss instead. * The RSSI and a timestamp are also supplied. The RSSI data is used * during AP scanning to select a AP to associate with; it can have * any units so long as values have consistent units and higher values * mean ``better signal''. The receive timestamp is currently not used * by the 802.11 layer. */ static int hostap_input(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ifnet *ifp = vap->iv_ifp; struct ieee80211_frame *wh; struct ieee80211_key *key; struct ether_header *eh; int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ uint8_t dir, type, subtype, qos; uint8_t *bssid; int is_hw_decrypted = 0; int has_decrypted = 0; /* * Some devices do hardware decryption all the way through * to pretending the frame wasn't encrypted in the first place. * So, tag it appropriately so it isn't discarded inappropriately. */ if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED)) is_hw_decrypted = 1; if (m->m_flags & M_AMPDU_MPDU) { /* * Fastpath for A-MPDU reorder q resubmission. Frames * w/ M_AMPDU_MPDU marked have already passed through * here but were received out of order and been held on * the reorder queue. When resubmitted they are marked * with the M_AMPDU_MPDU flag and we can bypass most of * the normal processing. */ wh = mtod(m, struct ieee80211_frame *); type = IEEE80211_FC0_TYPE_DATA; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; subtype = IEEE80211_FC0_SUBTYPE_QOS_DATA; hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ goto resubmit_ampdu; } KASSERT(ni != NULL, ("null node")); ni->ni_inact = ni->ni_inact_reload; type = -1; /* undefined */ if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (1): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } /* * Bit of a cheat here, we use a pointer for a 3-address * frame format but don't reference fields past outside * ieee80211_frame_min w/o first validating the data is * present. */ wh = mtod(m, struct ieee80211_frame *); if (!IEEE80211_IS_FC0_CHECK_VER(wh, IEEE80211_FC0_VERSION_0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", wh->i_fc[0], wh->i_fc[1]); vap->iv_stats.is_rx_badversion++; goto err; } dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { if (dir != IEEE80211_FC1_DIR_NODS) bssid = wh->i_addr1; else if (type == IEEE80211_FC0_TYPE_CTL) bssid = wh->i_addr1; else { if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (2): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } bssid = wh->i_addr3; } /* * Validate the bssid. */ if (!(type == IEEE80211_FC0_TYPE_MGT && subtype == IEEE80211_FC0_SUBTYPE_BEACON) && !IEEE80211_ADDR_EQ(bssid, vap->iv_bss->ni_bssid) && !IEEE80211_ADDR_EQ(bssid, ifp->if_broadcastaddr)) { /* not interested in */ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, bssid, NULL, "%s", "not to bss"); vap->iv_stats.is_rx_wrongbss++; goto out; } IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; if (IEEE80211_HAS_SEQ(type, subtype)) { uint8_t tid = ieee80211_gettid(wh); if (IEEE80211_QOS_HAS_SEQ(wh) && TID_TO_WME_AC(tid) >= WME_AC_VI) ic->ic_wme.wme_hipri_traffic++; if (! ieee80211_check_rxseq(ni, wh, bssid, rxs)) goto out; } } switch (type) { case IEEE80211_FC0_TYPE_DATA: hdrspace = ieee80211_hdrspace(ic, wh); if (m->m_len < hdrspace && (m = m_pullup(m, hdrspace)) == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "data too short: expecting %u", hdrspace); vap->iv_stats.is_rx_tooshort++; goto out; /* XXX */ } if (!(dir == IEEE80211_FC1_DIR_TODS || (dir == IEEE80211_FC1_DIR_DSTODS && (vap->iv_flags & IEEE80211_F_DWDS)))) { if (dir != IEEE80211_FC1_DIR_DSTODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); } else { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT | IEEE80211_MSG_WDS, wh, "4-address data", "%s", "DWDS not enabled"); } vap->iv_stats.is_rx_wrongdir++; goto out; } /* check if source STA is associated */ if (ni == vap->iv_bss) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "%s", "unknown src"); ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_NOT_AUTHED); vap->iv_stats.is_rx_notassoc++; goto err; } if (ni->ni_associd == 0) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "%s", "unassoc src"); IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC, IEEE80211_REASON_NOT_ASSOCED); vap->iv_stats.is_rx_notassoc++; goto err; } /* * Check for power save state change. * XXX out-of-order A-MPDU frames? */ if (((wh->i_fc[1] & IEEE80211_FC1_PWR_MGT) ^ (ni->ni_flags & IEEE80211_NODE_PWR_MGT))) vap->iv_node_ps(ni, wh->i_fc[1] & IEEE80211_FC1_PWR_MGT); /* * For 4-address packets handle WDS discovery * notifications. Once a WDS link is setup frames * are just delivered to the WDS vap (see below). */ if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap == NULL) { if (!ieee80211_node_is_authorized(ni)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT | IEEE80211_MSG_WDS, wh, "4-address data", "%s", "unauthorized port"); vap->iv_stats.is_rx_unauth++; IEEE80211_NODE_STAT(ni, rx_unauth); goto err; } ieee80211_dwds_discover(ni, m); return type; } /* * Handle A-MPDU re-ordering. If the frame is to be * processed directly then ieee80211_ampdu_reorder * will return 0; otherwise it has consumed the mbuf * and we should do nothing more with it. */ if ((m->m_flags & M_AMPDU) && ieee80211_ampdu_reorder(ni, m, rxs) != 0) { m = NULL; goto out; } resubmit_ampdu: /* * Handle privacy requirements. Note that we * must not be preempted from here until after * we (potentially) call ieee80211_crypto_demic; * otherwise we may violate assumptions in the * crypto cipher modules used to do delayed update * of replay sequence numbers. */ if (is_hw_decrypted || IEEE80211_IS_PROTECTED(wh)) { if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { /* * Discard encrypted frames when privacy is off. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "WEP", "%s", "PRIVACY off"); vap->iv_stats.is_rx_noprivacy++; IEEE80211_NODE_STAT(ni, rx_noprivacy); goto out; } if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) { /* NB: stats+msgs handled in crypto_decap */ IEEE80211_NODE_STAT(ni, rx_wepfail); goto out; } wh = mtod(m, struct ieee80211_frame *); wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; has_decrypted = 1; } else { /* XXX M_WEP and IEEE80211_F_PRIVACY */ key = NULL; } /* * Save QoS bits for use below--before we strip the header. */ if (subtype == IEEE80211_FC0_SUBTYPE_QOS_DATA) qos = ieee80211_getqos(wh)[0]; else qos = 0; /* * Next up, any fragmentation. */ if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { m = ieee80211_defrag(ni, m, hdrspace, has_decrypted); if (m == NULL) { /* Fragment dropped or frame not complete yet */ goto out; } } wh = NULL; /* no longer valid, catch any uses */ /* * Next strip any MSDU crypto bits. */ if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "demic error"); vap->iv_stats.is_rx_demicfail++; IEEE80211_NODE_STAT(ni, rx_demicfail); goto out; } /* copy to listener after decrypt */ if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); need_tap = 0; /* * Finally, strip the 802.11 header. */ m = ieee80211_decap(vap, m, hdrspace, qos); if (m == NULL) { /* XXX mask bit to check for both */ /* don't count Null data frames as errors */ if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) goto out; IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "decap error"); vap->iv_stats.is_rx_decap++; IEEE80211_NODE_STAT(ni, rx_decap); goto err; } if (!(qos & IEEE80211_QOS_AMSDU)) eh = mtod(m, struct ether_header *); else eh = NULL; if (!ieee80211_node_is_authorized(ni)) { /* * Deny any non-PAE frames received prior to * authorization. For open/shared-key * authentication the port is mark authorized * after authentication completes. For 802.1x * the port is not marked authorized by the * authenticator until the handshake has completed. */ if (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "unauthorized or " "unknown port: ether type 0x%x len %u", eh == NULL ? -1 : eh->ether_type, m->m_pkthdr.len); vap->iv_stats.is_rx_unauth++; IEEE80211_NODE_STAT(ni, rx_unauth); goto err; } } else { /* * When denying unencrypted frames, discard * any non-PAE frames received without encryption. */ if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && ((has_decrypted == 0) && (m->m_flags & M_WEP) == 0) && (is_hw_decrypted == 0) && (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE))) { /* * Drop unencrypted frames. */ vap->iv_stats.is_rx_unencrypted++; IEEE80211_NODE_STAT(ni, rx_unencrypted); goto out; } } /* XXX require HT? */ if (qos & IEEE80211_QOS_AMSDU) { m = ieee80211_decap_amsdu(ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; } else { #ifdef IEEE80211_SUPPORT_SUPERG m = ieee80211_decap_fastframe(vap, ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; #endif } if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap != NULL) ieee80211_deliver_data(ni->ni_wdsvap, ni, m); else hostap_deliver_data(vap, ni, m); return IEEE80211_FC0_TYPE_DATA; case IEEE80211_FC0_TYPE_MGT: vap->iv_stats.is_rx_mgmt++; IEEE80211_NODE_STAT(ni, rx_mgmt); if (dir != IEEE80211_FC1_DIR_NODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "mgt", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto err; } if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "mgt", "too short: len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { /* ensure return frames are unicast */ IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, NULL, "source is multicast: %s", ether_sprintf(wh->i_addr2)); vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ goto out; } #ifdef IEEE80211_DEBUG if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || ieee80211_msg_dumppkts(vap)) { if_printf(ifp, "received %s from %s rssi %d\n", ieee80211_mgt_subtype_name(subtype), ether_sprintf(wh->i_addr2), rssi); } #endif if (IEEE80211_IS_PROTECTED(wh)) { if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { /* * Only shared key auth frames with a challenge * should be encrypted, discard all others. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "WEP set but not permitted"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ goto out; } if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { /* * Discard encrypted frames when privacy is off. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "WEP set but PRIVACY off"); vap->iv_stats.is_rx_noprivacy++; goto out; } hdrspace = ieee80211_hdrspace(ic, wh); if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) { /* NB: stats+msgs handled in crypto_decap */ goto out; } wh = mtod(m, struct ieee80211_frame *); wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; has_decrypted = 1; } /* * Pass the packet to radiotap before calling iv_recv_mgmt(). * Otherwise iv_recv_mgmt() might pass another packet to * radiotap, resulting in out of order packet captures. */ if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); need_tap = 0; vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); goto out; case IEEE80211_FC0_TYPE_CTL: vap->iv_stats.is_rx_ctl++; IEEE80211_NODE_STAT(ni, rx_ctrl); vap->iv_recv_ctl(ni, m, subtype); goto out; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "bad", "frame type 0x%x", type); /* should not come here */ break; } err: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); out: if (m != NULL) { if (need_tap && ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); m_freem(m); } return type; } static void hostap_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, int rssi, int nf, uint16_t seq, uint16_t status) { struct ieee80211vap *vap = ni->ni_vap; KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state)); if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "open auth", "bad sta auth mode %u", ni->ni_authmode); vap->iv_stats.is_rx_bad_auth++; /* XXX */ /* * Clear any challenge text that may be there if * a previous shared key auth failed and then an * open auth is attempted. */ if (ni->ni_challenge != NULL) { IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); ni->ni_challenge = NULL; } /* XXX hack to workaround calling convention */ ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, (seq + 1) | (IEEE80211_STATUS_ALG<<16)); return; } if (seq != IEEE80211_AUTH_OPEN_REQUEST) { vap->iv_stats.is_rx_bad_auth++; return; } /* always accept open authentication requests */ if (ni == vap->iv_bss) { ni = ieee80211_dup_bss(vap, wh->i_addr2); if (ni == NULL) return; } else if ((ni->ni_flags & IEEE80211_NODE_AREF) == 0) (void) ieee80211_ref_node(ni); /* * Mark the node as referenced to reflect that it's * reference count has been bumped to insure it remains * after the transaction completes. */ ni->ni_flags |= IEEE80211_NODE_AREF; /* * Mark the node as requiring a valid association id * before outbound traffic is permitted. */ ni->ni_flags |= IEEE80211_NODE_ASSOCID; if (vap->iv_acl != NULL && vap->iv_acl->iac_getpolicy(vap) == IEEE80211_MACCMD_POLICY_RADIUS) { /* * When the ACL policy is set to RADIUS we defer the * authorization to a user agent. Dispatch an event, * a subsequent MLME call will decide the fate of the * station. If the user agent is not present then the * node will be reclaimed due to inactivity. */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH | IEEE80211_MSG_ACL, ni->ni_macaddr, "%s", "station authentication deferred (radius acl)"); ieee80211_notify_node_auth(ni); } else { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni->ni_macaddr, "%s", "station authenticated (open)"); /* * When 802.1x is not in use mark the port * authorized at this point so traffic can flow. */ if (ni->ni_authmode != IEEE80211_AUTH_8021X) ieee80211_node_authorize(ni); } } static void hostap_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, uint8_t *frm, uint8_t *efrm, int rssi, int nf, uint16_t seq, uint16_t status) { struct ieee80211vap *vap = ni->ni_vap; uint8_t *challenge; int estatus; KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state)); /* * NB: this can happen as we allow pre-shared key * authentication to be enabled w/o wep being turned * on so that configuration of these can be done * in any order. It may be better to enforce the * ordering in which case this check would just be * for sanity/consistency. */ if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "%s", " PRIVACY is disabled"); estatus = IEEE80211_STATUS_ALG; goto bad; } /* * Pre-shared key authentication is evil; accept * it only if explicitly configured (it is supported * mainly for compatibility with clients like Mac OS X). */ if (ni->ni_authmode != IEEE80211_AUTH_AUTO && ni->ni_authmode != IEEE80211_AUTH_SHARED) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "bad sta auth mode %u", ni->ni_authmode); vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */ estatus = IEEE80211_STATUS_ALG; goto bad; } challenge = NULL; if (frm + 1 < efrm) { if ((frm[1] + 2) > (efrm - frm)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "ie %d/%d too long", frm[0], (frm[1] + 2) - (efrm - frm)); vap->iv_stats.is_rx_bad_auth++; estatus = IEEE80211_STATUS_CHALLENGE; goto bad; } if (*frm == IEEE80211_ELEMID_CHALLENGE) challenge = frm; frm += frm[1] + 2; } switch (seq) { case IEEE80211_AUTH_SHARED_CHALLENGE: case IEEE80211_AUTH_SHARED_RESPONSE: if (challenge == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "%s", "no challenge"); vap->iv_stats.is_rx_bad_auth++; estatus = IEEE80211_STATUS_CHALLENGE; goto bad; } if (challenge[1] != IEEE80211_CHALLENGE_LEN) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "bad challenge len %d", challenge[1]); vap->iv_stats.is_rx_bad_auth++; estatus = IEEE80211_STATUS_CHALLENGE; goto bad; } default: break; } switch (seq) { case IEEE80211_AUTH_SHARED_REQUEST: { #ifdef IEEE80211_DEBUG bool allocbs; #endif if (ni == vap->iv_bss) { ni = ieee80211_dup_bss(vap, wh->i_addr2); if (ni == NULL) { /* NB: no way to return an error */ return; } #ifdef IEEE80211_DEBUG allocbs = 1; #endif } else { if ((ni->ni_flags & IEEE80211_NODE_AREF) == 0) (void) ieee80211_ref_node(ni); #ifdef IEEE80211_DEBUG allocbs = 0; #endif } /* * Mark the node as referenced to reflect that it's * reference count has been bumped to insure it remains * after the transaction completes. */ ni->ni_flags |= IEEE80211_NODE_AREF; /* * Mark the node as requiring a valid association id * before outbound traffic is permitted. */ ni->ni_flags |= IEEE80211_NODE_ASSOCID; IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; if (!ieee80211_alloc_challenge(ni)) { /* NB: don't return error so they rexmit */ return; } net80211_get_random_bytes(ni->ni_challenge, IEEE80211_CHALLENGE_LEN); IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni, "shared key %sauth request", allocbs ? "" : "re"); /* * When the ACL policy is set to RADIUS we defer the * authorization to a user agent. Dispatch an event, * a subsequent MLME call will decide the fate of the * station. If the user agent is not present then the * node will be reclaimed due to inactivity. */ if (vap->iv_acl != NULL && vap->iv_acl->iac_getpolicy(vap) == IEEE80211_MACCMD_POLICY_RADIUS) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH | IEEE80211_MSG_ACL, ni->ni_macaddr, "%s", "station authentication deferred (radius acl)"); ieee80211_notify_node_auth(ni); return; } break; } case IEEE80211_AUTH_SHARED_RESPONSE: if (ni == vap->iv_bss) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key response", "%s", "unknown station"); /* NB: don't send a response */ return; } if (ni->ni_challenge == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key response", "%s", "no challenge recorded"); vap->iv_stats.is_rx_bad_auth++; estatus = IEEE80211_STATUS_CHALLENGE; goto bad; } if (memcmp(ni->ni_challenge, &challenge[2], challenge[1]) != 0) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key response", "%s", "challenge mismatch"); vap->iv_stats.is_rx_auth_fail++; estatus = IEEE80211_STATUS_CHALLENGE; goto bad; } IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni, "%s", "station authenticated (shared key)"); ieee80211_node_authorize(ni); break; default: IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "bad seq %d", seq); vap->iv_stats.is_rx_bad_auth++; estatus = IEEE80211_STATUS_SEQUENCE; goto bad; } IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); return; bad: /* * Send an error response; but only when operating as an AP. */ /* XXX hack to workaround calling convention */ ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, (seq + 1) | (estatus<<16)); } /* * Convert a WPA cipher selector OUI to an internal * cipher algorithm. Where appropriate we also * record any key length. */ static int wpa_cipher(const uint8_t *sel, uint8_t *keylen, uint8_t *cipher) { #define WPA_SEL(x) (((x)<<24)|WPA_OUI) uint32_t w = le32dec(sel); switch (w) { case WPA_SEL(WPA_CSE_NULL): *cipher = IEEE80211_CIPHER_NONE; break; case WPA_SEL(WPA_CSE_WEP40): if (keylen) *keylen = 40 / NBBY; *cipher = IEEE80211_CIPHER_WEP; break; case WPA_SEL(WPA_CSE_WEP104): if (keylen) *keylen = 104 / NBBY; *cipher = IEEE80211_CIPHER_WEP; break; case WPA_SEL(WPA_CSE_TKIP): *cipher = IEEE80211_CIPHER_TKIP; break; case WPA_SEL(WPA_CSE_CCMP): *cipher = IEEE80211_CIPHER_AES_CCM; break; default: return (EINVAL); } return (0); #undef WPA_SEL } /* * Convert a WPA key management/authentication algorithm * to an internal code. */ static int wpa_keymgmt(const uint8_t *sel) { #define WPA_SEL(x) (((x)<<24)|WPA_OUI) uint32_t w = le32dec(sel); switch (w) { case WPA_SEL(WPA_ASE_8021X_UNSPEC): return WPA_ASE_8021X_UNSPEC; case WPA_SEL(WPA_ASE_8021X_PSK): return WPA_ASE_8021X_PSK; case WPA_SEL(WPA_ASE_NONE): return WPA_ASE_NONE; } return 0; /* NB: so is discarded */ #undef WPA_SEL } /* * Parse a WPA information element to collect parameters. * Note that we do not validate security parameters; that * is handled by the authenticator; the parsing done here * is just for internal use in making operational decisions. */ static int ieee80211_parse_wpa(struct ieee80211vap *vap, const uint8_t *frm, struct ieee80211_rsnparms *rsn, const struct ieee80211_frame *wh) { uint8_t len = frm[1]; uint32_t w; int error, n; /* * Check the length once for fixed parts: OUI, type, * version, mcast cipher, and 2 selector counts. * Other, variable-length data, must be checked separately. */ if ((vap->iv_flags & IEEE80211_F_WPA1) == 0) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "not WPA, flags 0x%x", vap->iv_flags); return IEEE80211_REASON_IE_INVALID; } if (len < 14) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "too short, len %u", len); return IEEE80211_REASON_IE_INVALID; } frm += 6, len -= 4; /* NB: len is payload only */ /* NB: iswpaoui already validated the OUI and type */ w = le16dec(frm); if (w != WPA_VERSION) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "bad version %u", w); return IEEE80211_REASON_IE_INVALID; } frm += 2, len -= 2; memset(rsn, 0, sizeof(*rsn)); /* multicast/group cipher */ error = wpa_cipher(frm, &rsn->rsn_mcastkeylen, &rsn->rsn_mcastcipher); if (error != 0) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "unknown mcast cipher suite %08X", le32dec(frm)); return IEEE80211_REASON_GROUP_CIPHER_INVALID; } frm += 4, len -= 4; /* unicast ciphers */ n = le16dec(frm); frm += 2, len -= 2; if (len < n*4+2) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "ucast cipher data too short; len %u, n %u", len, n); return IEEE80211_REASON_IE_INVALID; } w = 0; for (; n > 0; n--) { uint8_t cipher; error = wpa_cipher(frm, &rsn->rsn_ucastkeylen, &cipher); if (error == 0) w |= 1 << cipher; frm += 4, len -= 4; } if (w == 0) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "no usable pairwise cipher suite found (w=%d)", w); return IEEE80211_REASON_PAIRWISE_CIPHER_INVALID; } /* XXX other? */ if (w & (1 << IEEE80211_CIPHER_AES_CCM)) rsn->rsn_ucastcipher = IEEE80211_CIPHER_AES_CCM; else rsn->rsn_ucastcipher = IEEE80211_CIPHER_TKIP; /* key management algorithms */ n = le16dec(frm); frm += 2, len -= 2; if (len < n*4) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "key mgmt alg data too short; len %u, n %u", len, n); return IEEE80211_REASON_IE_INVALID; } w = 0; for (; n > 0; n--) { w |= wpa_keymgmt(frm); frm += 4, len -= 4; } if (w & WPA_ASE_8021X_UNSPEC) rsn->rsn_keymgmt = WPA_ASE_8021X_UNSPEC; else rsn->rsn_keymgmt = WPA_ASE_8021X_PSK; if (len > 2) /* optional capabilities */ rsn->rsn_caps = le16dec(frm); return 0; } /* * Convert an RSN cipher selector OUI to an internal * cipher algorithm. Where appropriate we also * record any key length. */ static int rsn_cipher(const uint8_t *sel, uint8_t *keylen, uint8_t *cipher) { #define RSN_SEL(x) (((x)<<24)|RSN_OUI) uint32_t w = le32dec(sel); switch (w) { case RSN_SEL(RSN_CSE_NULL): *cipher = IEEE80211_CIPHER_NONE; break; case RSN_SEL(RSN_CSE_WEP40): if (keylen) *keylen = 40 / NBBY; *cipher = IEEE80211_CIPHER_WEP; break; case RSN_SEL(RSN_CSE_WEP104): if (keylen) *keylen = 104 / NBBY; *cipher = IEEE80211_CIPHER_WEP; break; case RSN_SEL(RSN_CSE_TKIP): *cipher = IEEE80211_CIPHER_TKIP; break; case RSN_SEL(RSN_CSE_CCMP): *cipher = IEEE80211_CIPHER_AES_CCM; break; case RSN_SEL(RSN_CSE_WRAP): *cipher = IEEE80211_CIPHER_AES_OCB; break; default: return (EINVAL); } return (0); #undef WPA_SEL } /* * Convert an RSN key management/authentication algorithm * to an internal code. */ static int rsn_keymgmt(const uint8_t *sel) { #define RSN_SEL(x) (((x)<<24)|RSN_OUI) uint32_t w = le32dec(sel); switch (w) { case RSN_SEL(RSN_ASE_8021X_UNSPEC): return RSN_ASE_8021X_UNSPEC; case RSN_SEL(RSN_ASE_8021X_PSK): return RSN_ASE_8021X_PSK; case RSN_SEL(RSN_ASE_NONE): return RSN_ASE_NONE; } return 0; /* NB: so is discarded */ #undef RSN_SEL } /* * Parse a WPA/RSN information element to collect parameters * and validate the parameters against what has been * configured for the system. */ static int ieee80211_parse_rsn(struct ieee80211vap *vap, const uint8_t *frm, struct ieee80211_rsnparms *rsn, const struct ieee80211_frame *wh) { uint8_t len = frm[1]; uint32_t w; int error, n; /* * Check the length once for fixed parts: * version, mcast cipher, and 2 selector counts. * Other, variable-length data, must be checked separately. */ if ((vap->iv_flags & IEEE80211_F_WPA2) == 0) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "WPA", "not RSN, flags 0x%x", vap->iv_flags); return IEEE80211_REASON_IE_INVALID; } /* XXX may be shorter */ if (len < 10) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "too short, len %u", len); return IEEE80211_REASON_IE_INVALID; } frm += 2; w = le16dec(frm); if (w != RSN_VERSION) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "bad version %u", w); return IEEE80211_REASON_UNSUPP_RSN_IE_VERSION; } frm += 2, len -= 2; memset(rsn, 0, sizeof(*rsn)); /* multicast/group cipher */ error = rsn_cipher(frm, &rsn->rsn_mcastkeylen, &rsn->rsn_mcastcipher); if (error != 0) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "unknown mcast cipher suite %08X", le32dec(frm)); return IEEE80211_REASON_GROUP_CIPHER_INVALID; } if (rsn->rsn_mcastcipher == IEEE80211_CIPHER_NONE) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "invalid mcast cipher suite %d", rsn->rsn_mcastcipher); return IEEE80211_REASON_GROUP_CIPHER_INVALID; } frm += 4, len -= 4; /* unicast ciphers */ n = le16dec(frm); frm += 2, len -= 2; if (len < n*4+2) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "ucast cipher data too short; len %u, n %u", len, n); return IEEE80211_REASON_IE_INVALID; } w = 0; for (; n > 0; n--) { uint8_t cipher; error = rsn_cipher(frm, &rsn->rsn_ucastkeylen, &cipher); if (error == 0) w |= 1 << cipher; frm += 4, len -= 4; } if (w & (1 << IEEE80211_CIPHER_AES_CCM)) rsn->rsn_ucastcipher = IEEE80211_CIPHER_AES_CCM; else if (w & (1 << IEEE80211_CIPHER_AES_OCB)) rsn->rsn_ucastcipher = IEEE80211_CIPHER_AES_OCB; else if (w & (1 << IEEE80211_CIPHER_TKIP)) rsn->rsn_ucastcipher = IEEE80211_CIPHER_TKIP; else if ((w & (1 << IEEE80211_CIPHER_NONE)) && (rsn->rsn_mcastcipher == IEEE80211_CIPHER_WEP || rsn->rsn_mcastcipher == IEEE80211_CIPHER_TKIP)) rsn->rsn_ucastcipher = IEEE80211_CIPHER_NONE; else { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "no usable pairwise cipher suite found (w=%d)", w); return IEEE80211_REASON_PAIRWISE_CIPHER_INVALID; } /* key management algorithms */ n = le16dec(frm); frm += 2, len -= 2; if (len < n*4) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA, wh, "RSN", "key mgmt alg data too short; len %u, n %u", len, n); return IEEE80211_REASON_IE_INVALID; } w = 0; for (; n > 0; n--) { w |= rsn_keymgmt(frm); frm += 4, len -= 4; } if (w & RSN_ASE_8021X_UNSPEC) rsn->rsn_keymgmt = RSN_ASE_8021X_UNSPEC; else rsn->rsn_keymgmt = RSN_ASE_8021X_PSK; /* optional RSN capabilities */ if (len >= 2) { rsn->rsn_caps = le16dec(frm); frm += 2, len -= 2; } /* XXX PMK Count / PMKID */ /* XXX Group Cipher Management Suite */ return 0; } /* * WPA/802.11i association request processing. */ static int wpa_assocreq(struct ieee80211_node *ni, struct ieee80211_rsnparms *rsnparms, const struct ieee80211_frame *wh, const uint8_t *wpa, const uint8_t *rsn, uint16_t capinfo) { struct ieee80211vap *vap = ni->ni_vap; uint8_t reason; int badwparsn; ni->ni_flags &= ~(IEEE80211_NODE_WPS|IEEE80211_NODE_TSN); if (wpa == NULL && rsn == NULL) { if (vap->iv_flags_ext & IEEE80211_FEXT_WPS) { /* * W-Fi Protected Setup (WPS) permits * clients to associate and pass EAPOL frames * to establish initial credentials. */ ni->ni_flags |= IEEE80211_NODE_WPS; return 1; } if ((vap->iv_flags_ext & IEEE80211_FEXT_TSN) && (capinfo & IEEE80211_CAPINFO_PRIVACY)) { /* * Transitional Security Network. Permits clients * to associate and use WEP while WPA is configured. */ ni->ni_flags |= IEEE80211_NODE_TSN; return 1; } IEEE80211_DISCARD(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA, wh, NULL, "%s", "no WPA/RSN IE in association request"); vap->iv_stats.is_rx_assoc_badwpaie++; reason = IEEE80211_REASON_IE_INVALID; goto bad; } /* assert right association security credentials */ badwparsn = 0; /* NB: to silence compiler */ switch (vap->iv_flags & IEEE80211_F_WPA) { case IEEE80211_F_WPA1: badwparsn = (wpa == NULL); break; case IEEE80211_F_WPA2: badwparsn = (rsn == NULL); break; case IEEE80211_F_WPA1|IEEE80211_F_WPA2: badwparsn = (wpa == NULL && rsn == NULL); break; } if (badwparsn) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA, wh, NULL, "%s", "missing WPA/RSN IE in association request"); vap->iv_stats.is_rx_assoc_badwpaie++; reason = IEEE80211_REASON_IE_INVALID; goto bad; } /* * Parse WPA/RSN information element. */ if (wpa != NULL) reason = ieee80211_parse_wpa(vap, wpa, rsnparms, wh); else reason = ieee80211_parse_rsn(vap, rsn, rsnparms, wh); if (reason != 0) { /* XXX wpa->rsn fallback? */ /* XXX distinguish WPA/RSN? */ vap->iv_stats.is_rx_assoc_badwpaie++; goto bad; } IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA, ni, "%s ie: mc %u/%u uc %u/%u key %u caps 0x%x", wpa != NULL ? "WPA" : "RSN", rsnparms->rsn_mcastcipher, rsnparms->rsn_mcastkeylen, rsnparms->rsn_ucastcipher, rsnparms->rsn_ucastkeylen, rsnparms->rsn_keymgmt, rsnparms->rsn_caps); return 1; bad: ieee80211_node_deauth(ni, reason); return 0; } /* XXX find a better place for definition */ struct l2_update_frame { struct ether_header eh; uint8_t dsap; uint8_t ssap; uint8_t control; uint8_t xid[3]; } __packed; /* * Deliver a TGf L2UF frame on behalf of a station. * This primes any bridge when the station is roaming * between ap's on the same wired network. */ static void ieee80211_deliver_l2uf(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; struct ifnet *ifp = vap->iv_ifp; struct mbuf *m; struct l2_update_frame *l2uf; struct ether_header *eh; m = m_gethdr(IEEE80211_M_NOWAIT, MT_DATA); if (m == NULL) { IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, "%s", "no mbuf for l2uf frame"); vap->iv_stats.is_rx_nobuf++; /* XXX not right */ return; } l2uf = mtod(m, struct l2_update_frame *); eh = &l2uf->eh; /* dst: Broadcast address */ IEEE80211_ADDR_COPY(eh->ether_dhost, ifp->if_broadcastaddr); /* src: associated STA */ IEEE80211_ADDR_COPY(eh->ether_shost, ni->ni_macaddr); eh->ether_type = htons(sizeof(*l2uf) - sizeof(*eh)); l2uf->dsap = 0; l2uf->ssap = 0; l2uf->control = 0xf5; l2uf->xid[0] = 0x81; l2uf->xid[1] = 0x80; l2uf->xid[2] = 0x00; m->m_pkthdr.len = m->m_len = sizeof(*l2uf); hostap_deliver_data(vap, ni, m); } static void ratesetmismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh, int reassoc, int resp, const char *tag, int rate) { IEEE80211_NOTE_MAC(ni->ni_vap, IEEE80211_MSG_ANY, wh->i_addr2, "deny %s request, %s rate set mismatch, rate/MCS %d", reassoc ? "reassoc" : "assoc", tag, rate & IEEE80211_RATE_VAL); IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_BASIC_RATE); ieee80211_node_leave(ni); } static void capinfomismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh, int reassoc, int resp, const char *tag, int capinfo) { struct ieee80211vap *vap = ni->ni_vap; IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, wh->i_addr2, "deny %s request, %s mismatch 0x%x", reassoc ? "reassoc" : "assoc", tag, capinfo); IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_CAPINFO); ieee80211_node_leave(ni); vap->iv_stats.is_rx_assoc_capmismatch++; } static void htcapmismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh, int reassoc, int resp) { IEEE80211_NOTE_MAC(ni->ni_vap, IEEE80211_MSG_ANY, wh->i_addr2, "deny %s request, %s missing HT ie", reassoc ? "reassoc" : "assoc"); /* XXX no better code */ IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_MISSING_HT_CAPS); ieee80211_node_leave(ni); } static void authalgreject(struct ieee80211_node *ni, const struct ieee80211_frame *wh, int algo, int seq, int status) { struct ieee80211vap *vap = ni->ni_vap; IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, NULL, "unsupported alg %d", algo); vap->iv_stats.is_rx_auth_unsupported++; ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, seq | (status << 16)); } static __inline int ishtmixed(const uint8_t *ie) { const struct ieee80211_ie_htinfo *ht = (const struct ieee80211_ie_htinfo *) ie; return (ht->hi_byte2 & IEEE80211_HTINFO_OPMODE) == IEEE80211_HTINFO_OPMODE_MIXED; } static int is11bclient(const uint8_t *rates, const uint8_t *xrates) { static const uint32_t brates = (1<<2*1)|(1<<2*2)|(1<<11)|(1<<2*11); int i; /* NB: the 11b clients we care about will not have xrates */ if (xrates != NULL || rates == NULL) return 0; for (i = 0; i < rates[1]; i++) { int r = rates[2+i] & IEEE80211_RATE_VAL; if (r > 2*11 || ((1<ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_frame *wh; uint8_t *frm, *efrm, *sfrm; uint8_t *ssid, *rates, *xrates, *wpa, *rsn, *wme, *ath, *htcap; uint8_t *vhtcap, *vhtinfo; int reassoc, resp; uint8_t rate; wh = mtod(m0, struct ieee80211_frame *); frm = (uint8_t *)&wh[1]; efrm = mtod(m0, uint8_t *) + m0->m_len; switch (subtype) { case IEEE80211_FC0_SUBTYPE_PROBE_RESP: /* * We process beacon/probe response frames when scanning; * otherwise we check beacon frames for overlapping non-ERP * BSS in 11g and/or overlapping legacy BSS when in HT. */ if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { vap->iv_stats.is_rx_mgtdiscard++; return; } /* FALLTHROUGH */ case IEEE80211_FC0_SUBTYPE_BEACON: { struct ieee80211_scanparams scan; /* NB: accept off-channel frames */ /* XXX TODO: use rxstatus to determine off-channel details */ if (ieee80211_parse_beacon(ni, m0, ic->ic_curchan, &scan) &~ IEEE80211_BPARSE_OFFCHAN) return; /* * Count frame now that we know it's to be processed. */ if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { vap->iv_stats.is_rx_beacon++; /* XXX remove */ IEEE80211_NODE_STAT(ni, rx_beacons); } else IEEE80211_NODE_STAT(ni, rx_proberesp); /* * If scanning, just pass information to the scan module. */ if (ic->ic_flags & IEEE80211_F_SCAN) { if (scan.status == 0 && /* NB: on channel */ (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN)) { /* * Actively scanning a channel marked passive; * send a probe request now that we know there * is 802.11 traffic present. * * XXX check if the beacon we recv'd gives * us what we need and suppress the probe req */ ieee80211_probe_curchan(vap, true); ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; } ieee80211_add_scan(vap, ic->ic_curchan, &scan, wh, subtype, rssi, nf); return; } /* * Check beacon for overlapping bss w/ non ERP stations. * If we detect one and protection is configured but not * enabled, enable it and start a timer that'll bring us * out if we stop seeing the bss. */ if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && scan.status == 0 && /* NB: on-channel */ ((scan.erp & 0x100) == 0 || /* NB: no ERP, 11b sta*/ (scan.erp & IEEE80211_ERP_NON_ERP_PRESENT))) { vap->iv_lastnonerp = ticks; vap->iv_flags_ext |= IEEE80211_FEXT_NONERP_PR; /* * XXX TODO: this may need to check all VAPs? */ if (vap->iv_protmode != IEEE80211_PROT_NONE && (vap->iv_flags & IEEE80211_F_USEPROT) == 0) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_ASSOC, wh, "non-ERP present on channel %d " "(saw erp 0x%x from channel %d), " "enable use of protection", ic->ic_curchan->ic_ieee, scan.erp, scan.chan); vap->iv_flags |= IEEE80211_F_USEPROT; ieee80211_vap_update_erp_protmode(vap); } } /* * Check beacon for non-HT station on HT channel * and update HT BSS occupancy as appropriate. */ if (IEEE80211_IS_CHAN_HT(ic->ic_curchan)) { if (scan.status & IEEE80211_BPARSE_OFFCHAN) { /* * Off control channel; only check frames * that come in the extension channel when * operating w/ HT40. */ if (!IEEE80211_IS_CHAN_HT40(ic->ic_curchan)) break; if (scan.chan != ic->ic_curchan->ic_extieee) break; } if (scan.htinfo == NULL) { ieee80211_htprot_update(vap, IEEE80211_HTINFO_OPMODE_PROTOPT | IEEE80211_HTINFO_NONHT_PRESENT); } else if (ishtmixed(scan.htinfo)) { /* XXX? take NONHT_PRESENT from beacon? */ ieee80211_htprot_update(vap, IEEE80211_HTINFO_OPMODE_MIXED | IEEE80211_HTINFO_NONHT_PRESENT); } } break; } case IEEE80211_FC0_SUBTYPE_PROBE_REQ: if (vap->iv_state != IEEE80211_S_RUN) { vap->iv_stats.is_rx_mgtdiscard++; return; } /* * Consult the ACL policy module if setup. */ if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, wh, NULL, "%s", "disallowed by ACL"); vap->iv_stats.is_rx_acl++; return; } /* * prreq frame format * [tlv] ssid * [tlv] supported rates * [tlv] extended supported rates */ ssid = rates = xrates = NULL; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); switch (*frm) { case IEEE80211_ELEMID_SSID: ssid = frm; break; case IEEE80211_ELEMID_RATES: rates = frm; break; case IEEE80211_ELEMID_XRATES: xrates = frm; break; } frm += frm[1] + 2; } IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); if (xrates != NULL) IEEE80211_VERIFY_ELEMENT(xrates, IEEE80211_RATE_MAXSIZE - rates[1], return); IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return); if ((vap->iv_flags & IEEE80211_F_HIDESSID) && ssid[1] == 0) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "no ssid with ssid suppression enabled"); vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/ return; } /* XXX find a better class or define it's own */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, "%s", "recv probe req"); /* * Some legacy 11b clients cannot hack a complete * probe response frame. When the request includes * only a bare-bones rate set, communicate this to * the transmit side. */ ieee80211_send_proberesp(vap, wh->i_addr2, is11bclient(rates, xrates) ? IEEE80211_SEND_LEGACY_11B : 0); break; case IEEE80211_FC0_SUBTYPE_AUTH: { uint16_t algo, seq, status; if (vap->iv_state != IEEE80211_S_RUN) { vap->iv_stats.is_rx_mgtdiscard++; return; } if (!IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bss->ni_bssid)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, NULL, "%s", "wrong bssid"); vap->iv_stats.is_rx_wrongbss++; /*XXX unique stat?*/ return; } /* * auth frame format * [2] algorithm * [2] sequence * [2] status * [tlv*] challenge */ IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); algo = le16toh(*(uint16_t *)frm); seq = le16toh(*(uint16_t *)(frm + 2)); status = le16toh(*(uint16_t *)(frm + 4)); IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, "recv auth frame with algorithm %d seq %d", algo, seq); /* * Consult the ACL policy module if setup. */ if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, wh, NULL, "%s", "disallowed by ACL"); vap->iv_stats.is_rx_acl++; ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, (seq+1) | (IEEE80211_STATUS_UNSPECIFIED<<16)); return; } if (vap->iv_flags & IEEE80211_F_COUNTERM) { IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, wh, NULL, "%s", "TKIP countermeasures enabled"); vap->iv_stats.is_rx_auth_countermeasures++; ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, IEEE80211_REASON_MIC_FAILURE); return; } if (algo == IEEE80211_AUTH_ALG_SHARED) hostap_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, seq, status); else if (algo == IEEE80211_AUTH_ALG_OPEN) hostap_auth_open(ni, wh, rssi, nf, seq, status); else if (algo == IEEE80211_AUTH_ALG_LEAP) { authalgreject(ni, wh, algo, seq+1, IEEE80211_STATUS_ALG); return; } else { /* * We assume that an unknown algorithm is the result * of a decryption failure on a shared key auth frame; * return a status code appropriate for that instead * of IEEE80211_STATUS_ALG. * * NB: a seq# of 4 is intentional; the decrypted * frame likely has a bogus seq value. */ authalgreject(ni, wh, algo, 4, IEEE80211_STATUS_CHALLENGE); return; } break; } case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: { uint16_t capinfo, lintval; struct ieee80211_rsnparms rsnparms; if (vap->iv_state != IEEE80211_S_RUN) { vap->iv_stats.is_rx_mgtdiscard++; return; } if (!IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bss->ni_bssid)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, NULL, "%s", "wrong bssid"); vap->iv_stats.is_rx_assoc_bss++; return; } if (subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) { reassoc = 1; resp = IEEE80211_FC0_SUBTYPE_REASSOC_RESP; } else { reassoc = 0; resp = IEEE80211_FC0_SUBTYPE_ASSOC_RESP; } if (ni == vap->iv_bss) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, wh->i_addr2, "deny %s request, sta not authenticated", reassoc ? "reassoc" : "assoc"); ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_ASSOC_NOT_AUTHED); vap->iv_stats.is_rx_assoc_notauth++; return; } /* * asreq frame format * [2] capability information * [2] listen interval * [6*] current AP address (reassoc only) * [tlv] ssid * [tlv] supported rates * [tlv] extended supported rates * [tlv] WPA or RSN * [tlv] HT capabilities * [tlv] Atheros capabilities */ IEEE80211_VERIFY_LENGTH(efrm - frm, (reassoc ? 10 : 4), return); capinfo = le16toh(*(uint16_t *)frm); frm += 2; lintval = le16toh(*(uint16_t *)frm); frm += 2; if (reassoc) frm += 6; /* ignore current AP info */ ssid = rates = xrates = wpa = rsn = wme = ath = htcap = NULL; vhtcap = vhtinfo = NULL; sfrm = frm; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); switch (*frm) { case IEEE80211_ELEMID_SSID: ssid = frm; break; case IEEE80211_ELEMID_RATES: rates = frm; break; case IEEE80211_ELEMID_XRATES: xrates = frm; break; case IEEE80211_ELEMID_RSN: rsn = frm; break; case IEEE80211_ELEMID_HTCAP: htcap = frm; break; case IEEE80211_ELEMID_VHT_CAP: vhtcap = frm; break; case IEEE80211_ELEMID_VHT_OPMODE: vhtinfo = frm; break; case IEEE80211_ELEMID_VENDOR: if (iswpaoui(frm)) wpa = frm; else if (iswmeinfo(frm)) wme = frm; #ifdef IEEE80211_SUPPORT_SUPERG else if (isatherosoui(frm)) ath = frm; #endif else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { if (ishtcapoui(frm) && htcap == NULL) htcap = frm; } break; } frm += frm[1] + 2; } IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); if (xrates != NULL) IEEE80211_VERIFY_ELEMENT(xrates, IEEE80211_RATE_MAXSIZE - rates[1], return); IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return); if (htcap != NULL) { IEEE80211_VERIFY_LENGTH(htcap[1], htcap[0] == IEEE80211_ELEMID_VENDOR ? 4 + sizeof(struct ieee80211_ie_htcap)-2 : sizeof(struct ieee80211_ie_htcap)-2, return); /* XXX just NULL out? */ } /* Validate VHT IEs */ if (vhtcap != NULL) { IEEE80211_VERIFY_LENGTH(vhtcap[1], sizeof(struct ieee80211_vht_cap), return); } if (vhtinfo != NULL) { IEEE80211_VERIFY_LENGTH(vhtinfo[1], sizeof(struct ieee80211_vht_operation), return); } if ((vap->iv_flags & IEEE80211_F_WPA) && !wpa_assocreq(ni, &rsnparms, wh, wpa, rsn, capinfo)) return; /* discard challenge after association */ if (ni->ni_challenge != NULL) { IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); ni->ni_challenge = NULL; } /* NB: 802.11 spec says to ignore station's privacy bit */ if ((capinfo & IEEE80211_CAPINFO_ESS) == 0) { capinfomismatch(ni, wh, reassoc, resp, "capability", capinfo); return; } /* * Disallow re-associate w/ invalid slot time setting. */ if (ni->ni_associd != 0 && IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && ((ni->ni_capinfo ^ capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME)) { capinfomismatch(ni, wh, reassoc, resp, "slot time", capinfo); return; } rate = ieee80211_setup_rates(ni, rates, xrates, IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | IEEE80211_F_DONEGO | IEEE80211_F_DODEL); if (rate & IEEE80211_RATE_BASIC) { ratesetmismatch(ni, wh, reassoc, resp, "legacy", rate); vap->iv_stats.is_rx_assoc_norate++; return; } /* * If constrained to 11g-only stations reject an * 11b-only station. We cheat a bit here by looking * at the max negotiated xmit rate and assuming anyone * with a best rate <24Mb/s is an 11b station. */ if ((vap->iv_flags & IEEE80211_F_PUREG) && rate < 48) { ratesetmismatch(ni, wh, reassoc, resp, "11g", rate); vap->iv_stats.is_rx_assoc_norate++; return; } /* * Do HT rate set handling and setup HT node state. */ ni->ni_chan = vap->iv_bss->ni_chan; /* VHT */ if (IEEE80211_IS_CHAN_VHT(ni->ni_chan) && vhtcap != NULL && vhtinfo != NULL) { /* XXX TODO; see below */ printf("%s: VHT TODO!\n", __func__); ieee80211_vht_node_init(ni); ieee80211_vht_update_cap(ni, vhtcap, vhtinfo); } else if (ni->ni_flags & IEEE80211_NODE_VHT) ieee80211_vht_node_cleanup(ni); /* HT */ if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && htcap != NULL) { rate = ieee80211_setup_htrates(ni, htcap, IEEE80211_F_DOFMCS | IEEE80211_F_DONEGO | IEEE80211_F_DOBRS); if (rate & IEEE80211_RATE_BASIC) { ratesetmismatch(ni, wh, reassoc, resp, "HT", rate); vap->iv_stats.is_ht_assoc_norate++; return; } ieee80211_ht_node_init(ni); ieee80211_ht_updatehtcap(ni, htcap); } else if (ni->ni_flags & IEEE80211_NODE_HT) ieee80211_ht_node_cleanup(ni); /* Finally - this will use HT/VHT info to change node channel */ if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && htcap != NULL) { ieee80211_ht_updatehtcap_final(ni); } #ifdef IEEE80211_SUPPORT_SUPERG /* Always do ff node cleanup; for A-MSDU */ ieee80211_ff_node_cleanup(ni); #endif /* * Allow AMPDU operation only with unencrypted traffic * or AES-CCM; the 11n spec only specifies these ciphers * so permitting any others is undefined and can lead * to interoperability problems. */ if ((ni->ni_flags & IEEE80211_NODE_HT) && (((vap->iv_flags & IEEE80211_F_WPA) && rsnparms.rsn_ucastcipher != IEEE80211_CIPHER_AES_CCM) || (vap->iv_flags & (IEEE80211_F_WPA|IEEE80211_F_PRIVACY)) == IEEE80211_F_PRIVACY)) { IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_11N, ni, "disallow HT use because WEP or TKIP requested, " "capinfo 0x%x ucastcipher %d", capinfo, rsnparms.rsn_ucastcipher); ieee80211_ht_node_cleanup(ni); #ifdef IEEE80211_SUPPORT_SUPERG /* Always do ff node cleanup; for A-MSDU */ ieee80211_ff_node_cleanup(ni); #endif vap->iv_stats.is_ht_assoc_downgrade++; } /* * If constrained to 11n-only stations reject legacy stations. */ if ((vap->iv_flags_ht & IEEE80211_FHT_PUREN) && (ni->ni_flags & IEEE80211_NODE_HT) == 0) { htcapmismatch(ni, wh, reassoc, resp); vap->iv_stats.is_ht_assoc_nohtcap++; return; } IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; ni->ni_intval = lintval; ni->ni_capinfo = capinfo; ni->ni_fhdwell = vap->iv_bss->ni_fhdwell; ni->ni_fhindex = vap->iv_bss->ni_fhindex; /* * Store the IEs. * XXX maybe better to just expand */ if (ieee80211_ies_init(&ni->ni_ies, sfrm, efrm - sfrm)) { #define setie(_ie, _off) ieee80211_ies_setie(ni->ni_ies, _ie, _off) if (wpa != NULL) setie(wpa_ie, wpa - sfrm); if (rsn != NULL) setie(rsn_ie, rsn - sfrm); if (htcap != NULL) setie(htcap_ie, htcap - sfrm); if (wme != NULL) { setie(wme_ie, wme - sfrm); /* * Mark node as capable of QoS. */ ni->ni_flags |= IEEE80211_NODE_QOS; if (ieee80211_parse_wmeie(wme, wh, ni) > 0) { if (ni->ni_uapsd != 0) ni->ni_flags |= IEEE80211_NODE_UAPSD; else ni->ni_flags &= ~IEEE80211_NODE_UAPSD; } } else ni->ni_flags &= ~(IEEE80211_NODE_QOS | IEEE80211_NODE_UAPSD); #ifdef IEEE80211_SUPPORT_SUPERG if (ath != NULL) { setie(ath_ie, ath - sfrm); /* * Parse ATH station parameters. */ ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); } else #endif ni->ni_ath_flags = 0; #undef setie } else { ni->ni_flags &= ~IEEE80211_NODE_QOS; ni->ni_flags &= ~IEEE80211_NODE_UAPSD; ni->ni_ath_flags = 0; } ieee80211_node_join(ni, resp); ieee80211_deliver_l2uf(ni); break; } case IEEE80211_FC0_SUBTYPE_DEAUTH: case IEEE80211_FC0_SUBTYPE_DISASSOC: { #ifdef IEEE80211_DEBUG uint16_t reason; #endif if (vap->iv_state != IEEE80211_S_RUN || /* NB: can happen when in promiscuous mode */ !IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { vap->iv_stats.is_rx_mgtdiscard++; break; } /* * deauth/disassoc frame format * [2] reason */ IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); #ifdef IEEE80211_DEBUG reason = le16toh(*(uint16_t *)frm); #endif if (subtype == IEEE80211_FC0_SUBTYPE_DEAUTH) { vap->iv_stats.is_rx_deauth++; IEEE80211_NODE_STAT(ni, rx_deauth); } else { vap->iv_stats.is_rx_disassoc++; IEEE80211_NODE_STAT(ni, rx_disassoc); } IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, "recv %s (reason: %d (%s))", ieee80211_mgt_subtype_name(subtype), reason, ieee80211_reason_to_string(reason)); if (ni != vap->iv_bss) ieee80211_node_leave(ni); break; } case IEEE80211_FC0_SUBTYPE_ACTION: case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: if (ni == vap->iv_bss) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "unknown node"); vap->iv_stats.is_rx_mgtdiscard++; } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not for us"); vap->iv_stats.is_rx_mgtdiscard++; } else if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; } else { if (ieee80211_parse_action(ni, m0) == 0) (void)ic->ic_recv_action(ni, wh, frm, efrm); } break; case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: case IEEE80211_FC0_SUBTYPE_TIMING_ADV: case IEEE80211_FC0_SUBTYPE_ATIM: IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not handled"); vap->iv_stats.is_rx_mgtdiscard++; break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "mgt", "subtype 0x%x not handled", subtype); vap->iv_stats.is_rx_badsubtype++; break; } } static void hostap_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_PS_POLL: ni->ni_vap->iv_recv_pspoll(ni, m); break; case IEEE80211_FC0_SUBTYPE_BAR: ieee80211_recv_bar(ni, m); break; } } /* * Process a received ps-poll frame. */ void ieee80211_recv_pspoll(struct ieee80211_node *ni, struct mbuf *m0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = vap->iv_ic; struct ieee80211_frame_min *wh; struct mbuf *m; uint16_t aid; int qlen; wh = mtod(m0, struct ieee80211_frame_min *); if (ni->ni_associd == 0) { IEEE80211_DISCARD(vap, IEEE80211_MSG_POWER | IEEE80211_MSG_DEBUG, (struct ieee80211_frame *) wh, NULL, "%s", "unassociated station"); vap->iv_stats.is_ps_unassoc++; IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_NOT_ASSOCED); return; } aid = le16toh(*(uint16_t *)wh->i_dur); if (aid != ni->ni_associd) { IEEE80211_DISCARD(vap, IEEE80211_MSG_POWER | IEEE80211_MSG_DEBUG, (struct ieee80211_frame *) wh, NULL, "aid mismatch: sta aid 0x%x poll aid 0x%x", ni->ni_associd, aid); vap->iv_stats.is_ps_badaid++; /* * NB: We used to deauth the station but it turns out * the Blackberry Curve 8230 (and perhaps other devices) * sometimes send the wrong AID when WME is negotiated. * Being more lenient here seems ok as we already check * the station is associated and we only return frames * queued for the station (i.e. we don't use the AID). */ return; } /* Okay, take the first queued packet and put it out... */ m = ieee80211_node_psq_dequeue(ni, &qlen); if (m == NULL) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_POWER, wh->i_addr2, "%s", "recv ps-poll, but queue empty"); ieee80211_send_nulldata(ieee80211_ref_node(ni)); vap->iv_stats.is_ps_qempty++; /* XXX node stat */ if (vap->iv_set_tim != NULL) vap->iv_set_tim(ni, 0); /* just in case */ return; } /* * If there are more packets, set the more packets bit * in the packet dispatched to the station; otherwise * turn off the TIM bit. */ if (qlen != 0) { IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, "recv ps-poll, send packet, %u still queued", qlen); m->m_flags |= M_MORE_DATA; } else { IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, "%s", "recv ps-poll, send packet, queue empty"); if (vap->iv_set_tim != NULL) vap->iv_set_tim(ni, 0); } m->m_flags |= M_PWR_SAV; /* bypass PS handling */ /* * Do the right thing; if it's an encap'ed frame then * call ieee80211_parent_xmitpkt() else * call ieee80211_vap_xmitpkt(). */ if (m->m_flags & M_ENCAP) { (void) ieee80211_parent_xmitpkt(ic, m); } else { (void) ieee80211_vap_xmitpkt(vap, m); } } diff --git a/sys/net80211/ieee80211_ioctl.c b/sys/net80211/ieee80211_ioctl.c index 3b57e7d8cd8e..24ec9659dc2d 100644 --- a/sys/net80211/ieee80211_ioctl.c +++ b/sys/net80211/ieee80211_ioctl.c @@ -1,3722 +1,3708 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include /* * IEEE 802.11 ioctl support (FreeBSD-specific) */ #include "opt_inet.h" #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #define IS_UP_AUTO(_vap) \ (IFNET_IS_UP_RUNNING((_vap)->iv_ifp) && \ (_vap)->iv_roaming == IEEE80211_ROAMING_AUTO) static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; static struct ieee80211_channel *findchannel(struct ieee80211com *, int ieee, int mode); static int ieee80211_scanreq(struct ieee80211vap *, struct ieee80211_scan_req *); static int ieee80211_ioctl_getkey(u_long cmd, struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; struct ieee80211req_key ik; struct ieee80211_key *wk; const struct ieee80211_cipher *cip; u_int kid; int error; if (ireq->i_len != sizeof(ik)) return EINVAL; error = copyin(ireq->i_data, &ik, sizeof(ik)); if (error) return error; kid = ik.ik_keyix; if (kid == IEEE80211_KEYIX_NONE) { ni = ieee80211_find_vap_node(&ic->ic_sta, vap, ik.ik_macaddr); if (ni == NULL) return ENOENT; wk = &ni->ni_ucastkey; } else { if (kid >= IEEE80211_WEP_NKID) return EINVAL; wk = &vap->iv_nw_keys[kid]; IEEE80211_ADDR_COPY(&ik.ik_macaddr, vap->iv_bss->ni_macaddr); ni = NULL; } cip = wk->wk_cipher; ik.ik_type = cip->ic_cipher; ik.ik_keylen = wk->wk_keylen; ik.ik_flags = wk->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV); if (wk->wk_keyix == vap->iv_def_txkey) ik.ik_flags |= IEEE80211_KEY_DEFAULT; if (ieee80211_priv_check_vap_getkey(cmd, vap, NULL) == 0) { /* NB: only root can read key data */ ik.ik_keyrsc = wk->wk_keyrsc[IEEE80211_NONQOS_TID]; ik.ik_keytsc = wk->wk_keytsc; memcpy(ik.ik_keydata, wk->wk_key, wk->wk_keylen); if (cip->ic_cipher == IEEE80211_CIPHER_TKIP) { memcpy(ik.ik_keydata+wk->wk_keylen, wk->wk_key + IEEE80211_KEYBUF_SIZE, IEEE80211_MICBUF_SIZE); ik.ik_keylen += IEEE80211_MICBUF_SIZE; } } else { ik.ik_keyrsc = 0; ik.ik_keytsc = 0; memset(ik.ik_keydata, 0, sizeof(ik.ik_keydata)); } if (ni != NULL) ieee80211_free_node(ni); return copyout(&ik, ireq->i_data, sizeof(ik)); } static int ieee80211_ioctl_getchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; if (sizeof(ic->ic_chan_active) < ireq->i_len) ireq->i_len = sizeof(ic->ic_chan_active); return copyout(&ic->ic_chan_active, ireq->i_data, ireq->i_len); } static int ieee80211_ioctl_getchaninfo(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; uint32_t space; space = __offsetof(struct ieee80211req_chaninfo, ic_chans[ic->ic_nchans]); if (space > ireq->i_len) space = ireq->i_len; /* XXX assumes compatible layout */ return copyout(&ic->ic_nchans, ireq->i_data, space); } static int ieee80211_ioctl_getwpaie(struct ieee80211vap *vap, struct ieee80211req *ireq, int req) { struct ieee80211_node *ni; struct ieee80211req_wpaie2 *wpaie; int error; if (ireq->i_len < IEEE80211_ADDR_LEN) return EINVAL; wpaie = IEEE80211_MALLOC(sizeof(*wpaie), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (wpaie == NULL) return ENOMEM; error = copyin(ireq->i_data, wpaie->wpa_macaddr, IEEE80211_ADDR_LEN); if (error != 0) goto bad; ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, wpaie->wpa_macaddr); if (ni == NULL) { error = ENOENT; goto bad; } if (ni->ni_ies.wpa_ie != NULL) { int ielen = ni->ni_ies.wpa_ie[1] + 2; if (ielen > sizeof(wpaie->wpa_ie)) ielen = sizeof(wpaie->wpa_ie); memcpy(wpaie->wpa_ie, ni->ni_ies.wpa_ie, ielen); } if (req == IEEE80211_IOC_WPAIE2) { if (ni->ni_ies.rsn_ie != NULL) { int ielen = ni->ni_ies.rsn_ie[1] + 2; if (ielen > sizeof(wpaie->rsn_ie)) ielen = sizeof(wpaie->rsn_ie); memcpy(wpaie->rsn_ie, ni->ni_ies.rsn_ie, ielen); } if (ireq->i_len > sizeof(struct ieee80211req_wpaie2)) ireq->i_len = sizeof(struct ieee80211req_wpaie2); } else { /* compatibility op, may overwrite wpa ie */ /* XXX check ic_flags? */ if (ni->ni_ies.rsn_ie != NULL) { int ielen = ni->ni_ies.rsn_ie[1] + 2; if (ielen > sizeof(wpaie->wpa_ie)) ielen = sizeof(wpaie->wpa_ie); memcpy(wpaie->wpa_ie, ni->ni_ies.rsn_ie, ielen); } if (ireq->i_len > sizeof(struct ieee80211req_wpaie)) ireq->i_len = sizeof(struct ieee80211req_wpaie); } ieee80211_free_node(ni); error = copyout(wpaie, ireq->i_data, ireq->i_len); bad: IEEE80211_FREE(wpaie, M_TEMP); return error; } static int ieee80211_ioctl_getstastats(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; uint8_t macaddr[IEEE80211_ADDR_LEN]; const size_t off = __offsetof(struct ieee80211req_sta_stats, is_stats); int error; if (ireq->i_len < off) return EINVAL; error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN); if (error != 0) return error; ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr); if (ni == NULL) return ENOENT; if (ireq->i_len > sizeof(struct ieee80211req_sta_stats)) ireq->i_len = sizeof(struct ieee80211req_sta_stats); /* NB: copy out only the statistics */ error = copyout(&ni->ni_stats, (uint8_t *) ireq->i_data + off, ireq->i_len - off); ieee80211_free_node(ni); return error; } struct scanreq { struct ieee80211req_scan_result *sr; size_t space; }; static size_t scan_space(const struct ieee80211_scan_entry *se, int *ielen) { size_t len; *ielen = se->se_ies.len; /* * NB: ie's can be no more than 255 bytes and the max 802.11 * packet is <3Kbytes so we are sure this doesn't overflow * 16-bits; if this is a concern we can drop the ie's. */ len = sizeof(struct ieee80211req_scan_result) + se->se_ssid[1] + se->se_meshid[1] + *ielen; return roundup(len, sizeof(uint32_t)); } static void get_scan_space(void *arg, const struct ieee80211_scan_entry *se) { struct scanreq *req = arg; int ielen; req->space += scan_space(se, &ielen); } static void get_scan_result(void *arg, const struct ieee80211_scan_entry *se) { struct scanreq *req = arg; struct ieee80211req_scan_result *sr; int ielen, len, nr, nxr; uint8_t *cp; len = scan_space(se, &ielen); if (len > req->space) return; sr = req->sr; KASSERT(len <= 65535 && ielen <= 65535, ("len %u ssid %u ie %u", len, se->se_ssid[1], ielen)); sr->isr_len = len; sr->isr_ie_off = sizeof(struct ieee80211req_scan_result); sr->isr_ie_len = ielen; sr->isr_freq = se->se_chan->ic_freq; sr->isr_flags = se->se_chan->ic_flags; sr->isr_rssi = se->se_rssi; sr->isr_noise = se->se_noise; sr->isr_intval = se->se_intval; sr->isr_capinfo = se->se_capinfo; sr->isr_erp = se->se_erp; IEEE80211_ADDR_COPY(sr->isr_bssid, se->se_bssid); nr = min(se->se_rates[1], IEEE80211_RATE_MAXSIZE); memcpy(sr->isr_rates, se->se_rates+2, nr); nxr = min(se->se_xrates[1], IEEE80211_RATE_MAXSIZE - nr); memcpy(sr->isr_rates+nr, se->se_xrates+2, nxr); sr->isr_nrates = nr + nxr; /* copy SSID */ sr->isr_ssid_len = se->se_ssid[1]; cp = ((uint8_t *)sr) + sr->isr_ie_off; memcpy(cp, se->se_ssid+2, sr->isr_ssid_len); /* copy mesh id */ cp += sr->isr_ssid_len; sr->isr_meshid_len = se->se_meshid[1]; memcpy(cp, se->se_meshid+2, sr->isr_meshid_len); cp += sr->isr_meshid_len; if (ielen) memcpy(cp, se->se_ies.data, ielen); req->space -= len; req->sr = (struct ieee80211req_scan_result *)(((uint8_t *)sr) + len); } static int ieee80211_ioctl_getscanresults(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct scanreq req; int error; if (ireq->i_len < sizeof(struct scanreq)) return EFAULT; error = 0; req.space = 0; ieee80211_scan_iterate(vap, get_scan_space, &req); if (req.space > ireq->i_len) req.space = ireq->i_len; if (req.space > 0) { uint32_t space; void *p; space = req.space; /* XXX IEEE80211_M_WAITOK after driver lock released */ p = IEEE80211_MALLOC(space, M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (p == NULL) return ENOMEM; req.sr = p; ieee80211_scan_iterate(vap, get_scan_result, &req); ireq->i_len = space - req.space; error = copyout(p, ireq->i_data, ireq->i_len); IEEE80211_FREE(p, M_TEMP); } else ireq->i_len = 0; return error; } struct stainforeq { struct ieee80211req_sta_info *si; size_t space; }; static size_t sta_space(const struct ieee80211_node *ni, size_t *ielen) { *ielen = ni->ni_ies.len; return roundup(sizeof(struct ieee80211req_sta_info) + *ielen, sizeof(uint32_t)); } static void get_sta_space(void *arg, struct ieee80211_node *ni) { struct stainforeq *req = arg; size_t ielen; if (ni->ni_vap->iv_opmode == IEEE80211_M_HOSTAP && ni->ni_associd == 0) /* only associated stations */ return; req->space += sta_space(ni, &ielen); } static void get_sta_info(void *arg, struct ieee80211_node *ni) { struct stainforeq *req = arg; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211req_sta_info *si; size_t ielen, len; uint8_t *cp; if (vap->iv_opmode == IEEE80211_M_HOSTAP && ni->ni_associd == 0) /* only associated stations */ return; if (ni->ni_chan == IEEE80211_CHAN_ANYC) /* XXX bogus entry */ return; len = sta_space(ni, &ielen); if (len > req->space) return; si = req->si; si->isi_len = len; si->isi_ie_off = sizeof(struct ieee80211req_sta_info); si->isi_ie_len = ielen; si->isi_freq = ni->ni_chan->ic_freq; si->isi_flags = ni->ni_chan->ic_flags; si->isi_state = ni->ni_flags; si->isi_authmode = ni->ni_authmode; vap->iv_ic->ic_node_getsignal(ni, &si->isi_rssi, &si->isi_noise); vap->iv_ic->ic_node_getmimoinfo(ni, &si->isi_mimo); si->isi_capinfo = ni->ni_capinfo; si->isi_erp = ni->ni_erp; IEEE80211_ADDR_COPY(si->isi_macaddr, ni->ni_macaddr); si->isi_nrates = ni->ni_rates.rs_nrates; if (si->isi_nrates > 15) si->isi_nrates = 15; memcpy(si->isi_rates, ni->ni_rates.rs_rates, si->isi_nrates); - si->isi_txrate = ni->ni_txrate; - if (si->isi_txrate & IEEE80211_RATE_MCS) { - const struct ieee80211_mcs_rates *mcs = - &ieee80211_htrates[ni->ni_txrate &~ IEEE80211_RATE_MCS]; - if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) { - if (ni->ni_flags & IEEE80211_NODE_SGI40) - si->isi_txmbps = mcs->ht40_rate_800ns; - else - si->isi_txmbps = mcs->ht40_rate_400ns; - } else { - if (ni->ni_flags & IEEE80211_NODE_SGI20) - si->isi_txmbps = mcs->ht20_rate_800ns; - else - si->isi_txmbps = mcs->ht20_rate_400ns; - } - } else - si->isi_txmbps = si->isi_txrate; + si->isi_txrate = ieee80211_node_get_txrate_dot11rate(ni); + /* Note: txmbps is in 1/2Mbit/s units */ + si->isi_txmbps = ieee80211_node_get_txrate_kbit(ni) / 500; si->isi_associd = ni->ni_associd; si->isi_txpower = ni->ni_txpower; si->isi_vlan = ni->ni_vlan; if (ni->ni_flags & IEEE80211_NODE_QOS) { memcpy(si->isi_txseqs, ni->ni_txseqs, sizeof(ni->ni_txseqs)); memcpy(si->isi_rxseqs, ni->ni_rxseqs, sizeof(ni->ni_rxseqs)); } else { si->isi_txseqs[0] = ni->ni_txseqs[IEEE80211_NONQOS_TID]; si->isi_rxseqs[0] = ni->ni_rxseqs[IEEE80211_NONQOS_TID]; } /* NB: leave all cases in case we relax ni_associd == 0 check */ if (ieee80211_node_is_authorized(ni)) si->isi_inact = vap->iv_inact_run; else if (ni->ni_associd != 0 || (vap->iv_opmode == IEEE80211_M_WDS && (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY))) si->isi_inact = vap->iv_inact_auth; else si->isi_inact = vap->iv_inact_init; si->isi_inact = (si->isi_inact - ni->ni_inact) * IEEE80211_INACT_WAIT; si->isi_localid = ni->ni_mllid; si->isi_peerid = ni->ni_mlpid; si->isi_peerstate = ni->ni_mlstate; if (ielen) { cp = ((uint8_t *)si) + si->isi_ie_off; memcpy(cp, ni->ni_ies.data, ielen); } req->si = (struct ieee80211req_sta_info *)(((uint8_t *)si) + len); req->space -= len; } static int getstainfo_common(struct ieee80211vap *vap, struct ieee80211req *ireq, struct ieee80211_node *ni, size_t off) { struct ieee80211com *ic = vap->iv_ic; struct stainforeq req; size_t space; void *p; int error; error = 0; req.space = 0; if (ni == NULL) { ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_sta_space, &req); } else get_sta_space(&req, ni); if (req.space > ireq->i_len) req.space = ireq->i_len; if (req.space > 0) { space = req.space; /* XXX IEEE80211_M_WAITOK after driver lock released */ p = IEEE80211_MALLOC(space, M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (p == NULL) { error = ENOMEM; goto bad; } req.si = p; if (ni == NULL) { ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_sta_info, &req); } else get_sta_info(&req, ni); ireq->i_len = space - req.space; error = copyout(p, (uint8_t *) ireq->i_data+off, ireq->i_len); IEEE80211_FREE(p, M_TEMP); } else ireq->i_len = 0; bad: if (ni != NULL) ieee80211_free_node(ni); return error; } static int ieee80211_ioctl_getstainfo(struct ieee80211vap *vap, struct ieee80211req *ireq) { uint8_t macaddr[IEEE80211_ADDR_LEN]; const size_t off = __offsetof(struct ieee80211req_sta_req, info); struct ieee80211_node *ni; int error; if (ireq->i_len < sizeof(struct ieee80211req_sta_req)) return EFAULT; error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN); if (error != 0) return error; if (IEEE80211_ADDR_EQ(macaddr, vap->iv_ifp->if_broadcastaddr)) { ni = NULL; } else { ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr); if (ni == NULL) return ENOENT; } return getstainfo_common(vap, ireq, ni, off); } static int ieee80211_ioctl_getstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; struct ieee80211req_sta_txpow txpow; int error; if (ireq->i_len != sizeof(txpow)) return EINVAL; error = copyin(ireq->i_data, &txpow, sizeof(txpow)); if (error != 0) return error; ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr); if (ni == NULL) return ENOENT; txpow.it_txpow = ni->ni_txpower; error = copyout(&txpow, ireq->i_data, sizeof(txpow)); ieee80211_free_node(ni); return error; } static int ieee80211_ioctl_getwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_wme_state *wme = &ic->ic_wme; struct wmeParams *wmep; int ac; if ((ic->ic_caps & IEEE80211_C_WME) == 0) return EINVAL; ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL); if (ac >= WME_NUM_AC) ac = WME_AC_BE; if (ireq->i_len & IEEE80211_WMEPARAM_BSS) wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac]; else wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac]; switch (ireq->i_type) { case IEEE80211_IOC_WME_CWMIN: /* WME: CWmin */ ireq->i_val = wmep->wmep_logcwmin; break; case IEEE80211_IOC_WME_CWMAX: /* WME: CWmax */ ireq->i_val = wmep->wmep_logcwmax; break; case IEEE80211_IOC_WME_AIFS: /* WME: AIFS */ ireq->i_val = wmep->wmep_aifsn; break; case IEEE80211_IOC_WME_TXOPLIMIT: /* WME: txops limit */ ireq->i_val = wmep->wmep_txopLimit; break; case IEEE80211_IOC_WME_ACM: /* WME: ACM (bss only) */ wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac]; ireq->i_val = wmep->wmep_acm; break; case IEEE80211_IOC_WME_ACKPOLICY: /* WME: ACK policy (!bss only)*/ wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac]; ireq->i_val = !wmep->wmep_noackPolicy; break; } return 0; } static int ieee80211_ioctl_getmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq) { const struct ieee80211_aclator *acl = vap->iv_acl; return (acl == NULL ? EINVAL : acl->iac_getioctl(vap, ireq)); } static int ieee80211_ioctl_getcurchan(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *c; if (ireq->i_len != sizeof(struct ieee80211_channel)) return EINVAL; /* * vap's may have different operating channels when HT is * in use. When in RUN state report the vap-specific channel. * Otherwise return curchan. */ if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) c = vap->iv_bss->ni_chan; else c = ic->ic_curchan; return copyout(c, ireq->i_data, sizeof(*c)); } static int getappie(const struct ieee80211_appie *aie, struct ieee80211req *ireq) { if (aie == NULL) return EINVAL; /* NB: truncate, caller can check length */ if (ireq->i_len > aie->ie_len) ireq->i_len = aie->ie_len; return copyout(aie->ie_data, ireq->i_data, ireq->i_len); } static int ieee80211_ioctl_getappie(struct ieee80211vap *vap, struct ieee80211req *ireq) { uint8_t fc0; fc0 = ireq->i_val & 0xff; if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) return EINVAL; /* NB: could check iv_opmode and reject but hardly worth the effort */ switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) { case IEEE80211_FC0_SUBTYPE_BEACON: return getappie(vap->iv_appie_beacon, ireq); case IEEE80211_FC0_SUBTYPE_PROBE_RESP: return getappie(vap->iv_appie_proberesp, ireq); case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: return getappie(vap->iv_appie_assocresp, ireq); case IEEE80211_FC0_SUBTYPE_PROBE_REQ: return getappie(vap->iv_appie_probereq, ireq); case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: return getappie(vap->iv_appie_assocreq, ireq); case IEEE80211_FC0_SUBTYPE_BEACON|IEEE80211_FC0_SUBTYPE_PROBE_RESP: return getappie(vap->iv_appie_wpa, ireq); } return EINVAL; } static int ieee80211_ioctl_getregdomain(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; if (ireq->i_len != sizeof(ic->ic_regdomain)) return EINVAL; return copyout(&ic->ic_regdomain, ireq->i_data, sizeof(ic->ic_regdomain)); } static int ieee80211_ioctl_getroam(struct ieee80211vap *vap, const struct ieee80211req *ireq) { size_t len = ireq->i_len; /* NB: accept short requests for backwards compat */ if (len > sizeof(vap->iv_roamparms)) len = sizeof(vap->iv_roamparms); return copyout(vap->iv_roamparms, ireq->i_data, len); } static int ieee80211_ioctl_gettxparams(struct ieee80211vap *vap, const struct ieee80211req *ireq) { size_t len = ireq->i_len; /* NB: accept short requests for backwards compat */ if (len > sizeof(vap->iv_txparms)) len = sizeof(vap->iv_txparms); return copyout(vap->iv_txparms, ireq->i_data, len); } static int ieee80211_ioctl_getdevcaps(struct ieee80211com *ic, const struct ieee80211req *ireq) { struct ieee80211_devcaps_req *dc; struct ieee80211req_chaninfo *ci; int maxchans, error; maxchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_devcaps_req)) / sizeof(struct ieee80211_channel)); /* NB: require 1 so we know ic_nchans is accessible */ if (maxchans < 1) return EINVAL; /* constrain max request size, 2K channels is ~24Kbytes */ if (maxchans > 2048) maxchans = 2048; dc = (struct ieee80211_devcaps_req *) IEEE80211_MALLOC(IEEE80211_DEVCAPS_SIZE(maxchans), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (dc == NULL) return ENOMEM; dc->dc_drivercaps = ic->ic_caps; /* * Announce the set of both hardware and software supported * ciphers. */ dc->dc_cryptocaps = ic->ic_cryptocaps | ic->ic_sw_cryptocaps; dc->dc_htcaps = ic->ic_htcaps; dc->dc_vhtcaps = ic->ic_vht_cap.vht_cap_info; ci = &dc->dc_chaninfo; ic->ic_getradiocaps(ic, maxchans, &ci->ic_nchans, ci->ic_chans); KASSERT(ci->ic_nchans <= maxchans, ("nchans %d maxchans %d", ci->ic_nchans, maxchans)); ieee80211_sort_channels(ci->ic_chans, ci->ic_nchans); error = copyout(dc, ireq->i_data, IEEE80211_DEVCAPS_SPACE(dc)); IEEE80211_FREE(dc, M_TEMP); return error; } static int ieee80211_ioctl_getstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; struct ieee80211req_sta_vlan vlan; int error; if (ireq->i_len != sizeof(vlan)) return EINVAL; error = copyin(ireq->i_data, &vlan, sizeof(vlan)); if (error != 0) return error; if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) { ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, vlan.sv_macaddr); if (ni == NULL) return ENOENT; } else ni = ieee80211_ref_node(vap->iv_bss); vlan.sv_vlan = ni->ni_vlan; error = copyout(&vlan, ireq->i_data, sizeof(vlan)); ieee80211_free_node(ni); return error; } /* * Dummy ioctl get handler so the linker set is defined. */ static int dummy_ioctl_get(struct ieee80211vap *vap, struct ieee80211req *ireq) { return ENOSYS; } IEEE80211_IOCTL_GET(dummy, dummy_ioctl_get); static int ieee80211_ioctl_getdefault(struct ieee80211vap *vap, struct ieee80211req *ireq) { ieee80211_ioctl_getfunc * const *get; int error; SET_FOREACH(get, ieee80211_ioctl_getset) { error = (*get)(vap, ireq); if (error != ENOSYS) return error; } return EINVAL; } static int ieee80211_ioctl_get80211(struct ieee80211vap *vap, u_long cmd, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; u_int kid, len; uint8_t tmpkey[IEEE80211_KEYBUF_SIZE]; char tmpssid[IEEE80211_NWID_LEN]; int error = 0; switch (ireq->i_type) { case IEEE80211_IOC_IC_NAME: len = strlen(ic->ic_name) + 1; if (len > ireq->i_len) return (EINVAL); ireq->i_len = len; error = copyout(ic->ic_name, ireq->i_data, ireq->i_len); break; case IEEE80211_IOC_SSID: switch (vap->iv_state) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: ireq->i_len = vap->iv_des_ssid[0].len; memcpy(tmpssid, vap->iv_des_ssid[0].ssid, ireq->i_len); break; default: ireq->i_len = vap->iv_bss->ni_esslen; memcpy(tmpssid, vap->iv_bss->ni_essid, ireq->i_len); break; } error = copyout(tmpssid, ireq->i_data, ireq->i_len); break; case IEEE80211_IOC_NUMSSIDS: ireq->i_val = 1; break; case IEEE80211_IOC_WEP: if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) ireq->i_val = IEEE80211_WEP_OFF; else if (vap->iv_flags & IEEE80211_F_DROPUNENC) ireq->i_val = IEEE80211_WEP_ON; else ireq->i_val = IEEE80211_WEP_MIXED; break; case IEEE80211_IOC_WEPKEY: kid = (u_int) ireq->i_val; if (kid >= IEEE80211_WEP_NKID) return EINVAL; len = (u_int) vap->iv_nw_keys[kid].wk_keylen; /* NB: only root can read WEP keys */ if (ieee80211_priv_check_vap_getkey(cmd, vap, NULL) == 0) { bcopy(vap->iv_nw_keys[kid].wk_key, tmpkey, len); } else { bzero(tmpkey, len); } ireq->i_len = len; error = copyout(tmpkey, ireq->i_data, len); break; case IEEE80211_IOC_NUMWEPKEYS: ireq->i_val = IEEE80211_WEP_NKID; break; case IEEE80211_IOC_WEPTXKEY: ireq->i_val = vap->iv_def_txkey; break; case IEEE80211_IOC_AUTHMODE: if (vap->iv_flags & IEEE80211_F_WPA) ireq->i_val = IEEE80211_AUTH_WPA; else ireq->i_val = vap->iv_bss->ni_authmode; break; case IEEE80211_IOC_CHANNEL: ireq->i_val = ieee80211_chan2ieee(ic, ic->ic_curchan); break; case IEEE80211_IOC_POWERSAVE: if (vap->iv_flags & IEEE80211_F_PMGTON) ireq->i_val = IEEE80211_POWERSAVE_ON; else ireq->i_val = IEEE80211_POWERSAVE_OFF; break; case IEEE80211_IOC_POWERSAVESLEEP: ireq->i_val = ic->ic_lintval; break; case IEEE80211_IOC_RTSTHRESHOLD: ireq->i_val = vap->iv_rtsthreshold; break; case IEEE80211_IOC_PROTMODE: ireq->i_val = vap->iv_protmode; break; case IEEE80211_IOC_TXPOWER: /* * Tx power limit is the min of max regulatory * power, any user-set limit, and the max the * radio can do. * * TODO: methodize this */ ireq->i_val = 2*ic->ic_curchan->ic_maxregpower; if (ireq->i_val > ic->ic_txpowlimit) ireq->i_val = ic->ic_txpowlimit; if (ireq->i_val > ic->ic_curchan->ic_maxpower) ireq->i_val = ic->ic_curchan->ic_maxpower; break; case IEEE80211_IOC_WPA: switch (vap->iv_flags & IEEE80211_F_WPA) { case IEEE80211_F_WPA1: ireq->i_val = 1; break; case IEEE80211_F_WPA2: ireq->i_val = 2; break; case IEEE80211_F_WPA1 | IEEE80211_F_WPA2: ireq->i_val = 3; break; default: ireq->i_val = 0; break; } break; case IEEE80211_IOC_CHANLIST: error = ieee80211_ioctl_getchanlist(vap, ireq); break; case IEEE80211_IOC_ROAMING: ireq->i_val = vap->iv_roaming; break; case IEEE80211_IOC_PRIVACY: ireq->i_val = (vap->iv_flags & IEEE80211_F_PRIVACY) != 0; break; case IEEE80211_IOC_DROPUNENCRYPTED: ireq->i_val = (vap->iv_flags & IEEE80211_F_DROPUNENC) != 0; break; case IEEE80211_IOC_COUNTERMEASURES: ireq->i_val = (vap->iv_flags & IEEE80211_F_COUNTERM) != 0; break; case IEEE80211_IOC_WME: ireq->i_val = (vap->iv_flags & IEEE80211_F_WME) != 0; break; case IEEE80211_IOC_HIDESSID: ireq->i_val = (vap->iv_flags & IEEE80211_F_HIDESSID) != 0; break; case IEEE80211_IOC_APBRIDGE: ireq->i_val = (vap->iv_flags & IEEE80211_F_NOBRIDGE) == 0; break; case IEEE80211_IOC_WPAKEY: error = ieee80211_ioctl_getkey(cmd, vap, ireq); break; case IEEE80211_IOC_CHANINFO: error = ieee80211_ioctl_getchaninfo(vap, ireq); break; case IEEE80211_IOC_BSSID: if (ireq->i_len != IEEE80211_ADDR_LEN) return EINVAL; if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) { error = copyout(vap->iv_opmode == IEEE80211_M_WDS ? vap->iv_bss->ni_macaddr : vap->iv_bss->ni_bssid, ireq->i_data, ireq->i_len); } else error = copyout(vap->iv_des_bssid, ireq->i_data, ireq->i_len); break; case IEEE80211_IOC_WPAIE: case IEEE80211_IOC_WPAIE2: error = ieee80211_ioctl_getwpaie(vap, ireq, ireq->i_type); break; case IEEE80211_IOC_SCAN_RESULTS: error = ieee80211_ioctl_getscanresults(vap, ireq); break; case IEEE80211_IOC_STA_STATS: error = ieee80211_ioctl_getstastats(vap, ireq); break; case IEEE80211_IOC_TXPOWMAX: ireq->i_val = vap->iv_bss->ni_txpower; break; case IEEE80211_IOC_STA_TXPOW: error = ieee80211_ioctl_getstatxpow(vap, ireq); break; case IEEE80211_IOC_STA_INFO: error = ieee80211_ioctl_getstainfo(vap, ireq); break; case IEEE80211_IOC_WME_CWMIN: /* WME: CWmin */ case IEEE80211_IOC_WME_CWMAX: /* WME: CWmax */ case IEEE80211_IOC_WME_AIFS: /* WME: AIFS */ case IEEE80211_IOC_WME_TXOPLIMIT: /* WME: txops limit */ case IEEE80211_IOC_WME_ACM: /* WME: ACM (bss only) */ case IEEE80211_IOC_WME_ACKPOLICY: /* WME: ACK policy (!bss only) */ error = ieee80211_ioctl_getwmeparam(vap, ireq); break; case IEEE80211_IOC_DTIM_PERIOD: ireq->i_val = vap->iv_dtim_period; break; case IEEE80211_IOC_BEACON_INTERVAL: /* NB: get from ic_bss for station mode */ ireq->i_val = vap->iv_bss->ni_intval; break; case IEEE80211_IOC_PUREG: ireq->i_val = (vap->iv_flags & IEEE80211_F_PUREG) != 0; break; case IEEE80211_IOC_QUIET: ireq->i_val = vap->iv_quiet; break; case IEEE80211_IOC_QUIET_COUNT: ireq->i_val = vap->iv_quiet_count; break; case IEEE80211_IOC_QUIET_PERIOD: ireq->i_val = vap->iv_quiet_period; break; case IEEE80211_IOC_QUIET_DUR: ireq->i_val = vap->iv_quiet_duration; break; case IEEE80211_IOC_QUIET_OFFSET: ireq->i_val = vap->iv_quiet_offset; break; case IEEE80211_IOC_BGSCAN: ireq->i_val = (vap->iv_flags & IEEE80211_F_BGSCAN) != 0; break; case IEEE80211_IOC_BGSCAN_IDLE: ireq->i_val = vap->iv_bgscanidle*hz/1000; /* ms */ break; case IEEE80211_IOC_BGSCAN_INTERVAL: ireq->i_val = vap->iv_bgscanintvl/hz; /* seconds */ break; case IEEE80211_IOC_SCANVALID: ireq->i_val = vap->iv_scanvalid/hz; /* seconds */ break; case IEEE80211_IOC_FRAGTHRESHOLD: ireq->i_val = vap->iv_fragthreshold; break; case IEEE80211_IOC_MACCMD: error = ieee80211_ioctl_getmaccmd(vap, ireq); break; case IEEE80211_IOC_BURST: ireq->i_val = (vap->iv_flags & IEEE80211_F_BURST) != 0; break; case IEEE80211_IOC_BMISSTHRESHOLD: ireq->i_val = vap->iv_bmissthreshold; break; case IEEE80211_IOC_CURCHAN: error = ieee80211_ioctl_getcurchan(vap, ireq); break; case IEEE80211_IOC_SHORTGI: ireq->i_val = 0; if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20) ireq->i_val |= IEEE80211_HTCAP_SHORTGI20; if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40) ireq->i_val |= IEEE80211_HTCAP_SHORTGI40; break; case IEEE80211_IOC_AMPDU: ireq->i_val = 0; if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_TX) ireq->i_val |= 1; if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_RX) ireq->i_val |= 2; break; case IEEE80211_IOC_AMPDU_LIMIT: /* XXX TODO: make this a per-node thing; and leave this as global */ if (vap->iv_opmode == IEEE80211_M_HOSTAP) ireq->i_val = vap->iv_ampdu_rxmax; else if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) /* * XXX TODO: this isn't completely correct, as we've * negotiated the higher of the two. */ ireq->i_val = _IEEE80211_MASKSHIFT( vap->iv_bss->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU); else ireq->i_val = vap->iv_ampdu_limit; break; case IEEE80211_IOC_AMPDU_DENSITY: /* XXX TODO: make this a per-node thing; and leave this as global */ if (vap->iv_opmode == IEEE80211_M_STA && (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)) /* * XXX TODO: this isn't completely correct, as we've * negotiated the higher of the two. */ ireq->i_val = _IEEE80211_MASKSHIFT(vap->iv_bss->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY); else ireq->i_val = vap->iv_ampdu_density; break; case IEEE80211_IOC_AMSDU: ireq->i_val = 0; if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) ireq->i_val |= 1; if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_RX) ireq->i_val |= 2; break; case IEEE80211_IOC_AMSDU_LIMIT: ireq->i_val = vap->iv_amsdu_limit; /* XXX truncation? */ break; case IEEE80211_IOC_PUREN: ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_PUREN) != 0; break; case IEEE80211_IOC_DOTH: ireq->i_val = (vap->iv_flags & IEEE80211_F_DOTH) != 0; break; case IEEE80211_IOC_REGDOMAIN: error = ieee80211_ioctl_getregdomain(vap, ireq); break; case IEEE80211_IOC_ROAM: error = ieee80211_ioctl_getroam(vap, ireq); break; case IEEE80211_IOC_TXPARAMS: error = ieee80211_ioctl_gettxparams(vap, ireq); break; case IEEE80211_IOC_HTCOMPAT: ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) != 0; break; case IEEE80211_IOC_DWDS: ireq->i_val = (vap->iv_flags & IEEE80211_F_DWDS) != 0; break; case IEEE80211_IOC_INACTIVITY: ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_INACT) != 0; break; case IEEE80211_IOC_APPIE: error = ieee80211_ioctl_getappie(vap, ireq); break; case IEEE80211_IOC_WPS: ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_WPS) != 0; break; case IEEE80211_IOC_TSN: ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_TSN) != 0; break; case IEEE80211_IOC_DFS: ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DFS) != 0; break; case IEEE80211_IOC_DOTD: ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DOTD) != 0; break; case IEEE80211_IOC_DEVCAPS: error = ieee80211_ioctl_getdevcaps(ic, ireq); break; case IEEE80211_IOC_HTPROTMODE: ireq->i_val = vap->iv_htprotmode; break; case IEEE80211_IOC_HTCONF: if (vap->iv_flags_ht & IEEE80211_FHT_HT) { ireq->i_val = 1; if (vap->iv_flags_ht & IEEE80211_FHT_USEHT40) ireq->i_val |= 2; } else ireq->i_val = 0; break; case IEEE80211_IOC_STA_VLAN: error = ieee80211_ioctl_getstavlan(vap, ireq); break; case IEEE80211_IOC_SMPS: if (vap->iv_opmode == IEEE80211_M_STA && (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)) { if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_RTS) ireq->i_val = IEEE80211_HTCAP_SMPS_DYNAMIC; else if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_PS) ireq->i_val = IEEE80211_HTCAP_SMPS_ENA; else ireq->i_val = IEEE80211_HTCAP_SMPS_OFF; } else ireq->i_val = vap->iv_htcaps & IEEE80211_HTCAP_SMPS; break; case IEEE80211_IOC_RIFS: if (vap->iv_opmode == IEEE80211_M_STA && (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)) ireq->i_val = (vap->iv_bss->ni_flags & IEEE80211_NODE_RIFS) != 0; else ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_RIFS) != 0; break; case IEEE80211_IOC_STBC: ireq->i_val = 0; if (vap->iv_flags_ht & IEEE80211_FHT_STBC_TX) ireq->i_val |= 1; if (vap->iv_flags_ht & IEEE80211_FHT_STBC_RX) ireq->i_val |= 2; break; case IEEE80211_IOC_LDPC: ireq->i_val = 0; if (vap->iv_flags_ht & IEEE80211_FHT_LDPC_TX) ireq->i_val |= 1; if (vap->iv_flags_ht & IEEE80211_FHT_LDPC_RX) ireq->i_val |= 2; break; case IEEE80211_IOC_UAPSD: ireq->i_val = 0; if (vap->iv_flags_ext & IEEE80211_FEXT_UAPSD) ireq->i_val = 1; break; case IEEE80211_IOC_VHTCONF: ireq->i_val = vap->iv_vht_flags & IEEE80211_FVHT_MASK; break; default: error = ieee80211_ioctl_getdefault(vap, ireq); break; } return error; } static int ieee80211_ioctl_setkey(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211req_key ik; struct ieee80211_node *ni; struct ieee80211_key *wk; uint16_t kid; int error, i; if (ireq->i_len != sizeof(ik)) return EINVAL; error = copyin(ireq->i_data, &ik, sizeof(ik)); if (error) return error; /* NB: cipher support is verified by ieee80211_crypt_newkey */ /* NB: this also checks ik->ik_keylen > sizeof(wk->wk_key) */ if (ik.ik_keylen > sizeof(ik.ik_keydata)) return E2BIG; kid = ik.ik_keyix; if (kid == IEEE80211_KEYIX_NONE) { /* XXX unicast keys currently must be tx/rx */ if (ik.ik_flags != (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV)) return EINVAL; if (vap->iv_opmode == IEEE80211_M_STA) { ni = ieee80211_ref_node(vap->iv_bss); if (!IEEE80211_ADDR_EQ(ik.ik_macaddr, ni->ni_bssid)) { ieee80211_free_node(ni); return EADDRNOTAVAIL; } } else { ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, ik.ik_macaddr); if (ni == NULL) return ENOENT; } wk = &ni->ni_ucastkey; } else { if (kid >= IEEE80211_WEP_NKID) return EINVAL; wk = &vap->iv_nw_keys[kid]; /* * Global slots start off w/o any assigned key index. * Force one here for consistency with IEEE80211_IOC_WEPKEY. */ if (wk->wk_keyix == IEEE80211_KEYIX_NONE) wk->wk_keyix = kid; ni = NULL; } error = 0; ieee80211_key_update_begin(vap); if (ieee80211_crypto_newkey(vap, ik.ik_type, ik.ik_flags, wk)) { wk->wk_keylen = ik.ik_keylen; /* NB: MIC presence is implied by cipher type */ if (wk->wk_keylen > IEEE80211_KEYBUF_SIZE) wk->wk_keylen = IEEE80211_KEYBUF_SIZE; for (i = 0; i < IEEE80211_TID_SIZE; i++) wk->wk_keyrsc[i] = ik.ik_keyrsc; wk->wk_keytsc = 0; /* new key, reset */ memset(wk->wk_key, 0, sizeof(wk->wk_key)); memcpy(wk->wk_key, ik.ik_keydata, ik.ik_keylen); IEEE80211_ADDR_COPY(wk->wk_macaddr, ni != NULL ? ni->ni_macaddr : ik.ik_macaddr); if (!ieee80211_crypto_setkey(vap, wk)) error = EIO; else if ((ik.ik_flags & IEEE80211_KEY_DEFAULT)) /* * Inform the driver that this is the default * transmit key. Now, ideally we'd just set * a flag in the key update that would * say "yes, we're the default key", but * that currently isn't the way the ioctl -> * key interface works. */ ieee80211_crypto_set_deftxkey(vap, kid); } else error = ENXIO; ieee80211_key_update_end(vap); if (ni != NULL) ieee80211_free_node(ni); return error; } static int ieee80211_ioctl_delkey(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211req_del_key dk; int kid, error; if (ireq->i_len != sizeof(dk)) return EINVAL; error = copyin(ireq->i_data, &dk, sizeof(dk)); if (error) return error; kid = dk.idk_keyix; /* XXX uint8_t -> uint16_t */ if (dk.idk_keyix == (uint8_t) IEEE80211_KEYIX_NONE) { struct ieee80211_node *ni; if (vap->iv_opmode == IEEE80211_M_STA) { ni = ieee80211_ref_node(vap->iv_bss); if (!IEEE80211_ADDR_EQ(dk.idk_macaddr, ni->ni_bssid)) { ieee80211_free_node(ni); return EADDRNOTAVAIL; } } else { ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, dk.idk_macaddr); if (ni == NULL) return ENOENT; } /* XXX error return */ ieee80211_node_delucastkey(ni); ieee80211_free_node(ni); } else { if (kid >= IEEE80211_WEP_NKID) return EINVAL; /* XXX error return */ ieee80211_crypto_delkey(vap, &vap->iv_nw_keys[kid]); } return 0; } struct mlmeop { struct ieee80211vap *vap; int op; int reason; }; static void mlmedebug(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], int op, int reason) { #ifdef IEEE80211_DEBUG static const struct { int mask; const char *opstr; } ops[] = { { 0, "op#0" }, { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_ASSOC, "assoc" }, { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_ASSOC, "disassoc" }, { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, "deauth" }, { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, "authorize" }, { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, "unauthorize" }, }; if (op == IEEE80211_MLME_AUTH) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, mac, "station authenticate %s via MLME (reason: %d (%s))", reason == IEEE80211_STATUS_SUCCESS ? "ACCEPT" : "REJECT", reason, ieee80211_reason_to_string(reason)); } else if (!(IEEE80211_MLME_ASSOC <= op && op <= IEEE80211_MLME_AUTH)) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, mac, "unknown MLME request %d (reason: %d (%s))", op, reason, ieee80211_reason_to_string(reason)); } else if (reason == IEEE80211_STATUS_SUCCESS) { IEEE80211_NOTE_MAC(vap, ops[op].mask, mac, "station %s via MLME", ops[op].opstr); } else { IEEE80211_NOTE_MAC(vap, ops[op].mask, mac, "station %s via MLME (reason: %d (%s))", ops[op].opstr, reason, ieee80211_reason_to_string(reason)); } #endif /* IEEE80211_DEBUG */ } static void domlme(void *arg, struct ieee80211_node *ni) { struct mlmeop *mop = arg; struct ieee80211vap *vap = ni->ni_vap; if (vap != mop->vap) return; /* * NB: if ni_associd is zero then the node is already cleaned * up and we don't need to do this (we're safely holding a * reference but should otherwise not modify it's state). */ if (ni->ni_associd == 0) return; mlmedebug(vap, ni->ni_macaddr, mop->op, mop->reason); if (mop->op == IEEE80211_MLME_DEAUTH) { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, mop->reason); } else { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC, mop->reason); } ieee80211_node_leave(ni); } static int setmlme_dropsta(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], struct mlmeop *mlmeop) { struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; struct ieee80211_node *ni; int error = 0; /* NB: the broadcast address means do 'em all */ if (!IEEE80211_ADDR_EQ(mac, vap->iv_ifp->if_broadcastaddr)) { IEEE80211_NODE_LOCK(nt); ni = ieee80211_find_node_locked(nt, mac); IEEE80211_NODE_UNLOCK(nt); /* * Don't do the node update inside the node * table lock. This unfortunately causes LORs * with drivers and their TX paths. */ if (ni != NULL) { domlme(mlmeop, ni); ieee80211_free_node(ni); } else error = ENOENT; } else { ieee80211_iterate_nodes(nt, domlme, mlmeop); } return error; } static int setmlme_common(struct ieee80211vap *vap, int op, const uint8_t mac[IEEE80211_ADDR_LEN], int reason) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node_table *nt = &ic->ic_sta; struct ieee80211_node *ni; struct mlmeop mlmeop; int error; error = 0; switch (op) { case IEEE80211_MLME_DISASSOC: case IEEE80211_MLME_DEAUTH: switch (vap->iv_opmode) { case IEEE80211_M_STA: mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason); /* XXX not quite right */ ieee80211_new_state(vap, IEEE80211_S_INIT, reason); break; case IEEE80211_M_HOSTAP: mlmeop.vap = vap; mlmeop.op = op; mlmeop.reason = reason; error = setmlme_dropsta(vap, mac, &mlmeop); break; case IEEE80211_M_WDS: /* XXX user app should send raw frame? */ if (op != IEEE80211_MLME_DEAUTH) { error = EINVAL; break; } #if 0 /* XXX accept any address, simplifies user code */ if (!IEEE80211_ADDR_EQ(mac, vap->iv_bss->ni_macaddr)) { error = EINVAL; break; } #endif mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason); ni = ieee80211_ref_node(vap->iv_bss); IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); ieee80211_free_node(ni); break; case IEEE80211_M_MBSS: IEEE80211_NODE_LOCK(nt); ni = ieee80211_find_node_locked(nt, mac); /* * Don't do the node update inside the node * table lock. This unfortunately causes LORs * with drivers and their TX paths. */ IEEE80211_NODE_UNLOCK(nt); if (ni != NULL) { ieee80211_node_leave(ni); ieee80211_free_node(ni); } else { error = ENOENT; } break; default: error = EINVAL; break; } break; case IEEE80211_MLME_AUTHORIZE: case IEEE80211_MLME_UNAUTHORIZE: if (vap->iv_opmode != IEEE80211_M_HOSTAP && vap->iv_opmode != IEEE80211_M_WDS) { error = EINVAL; break; } IEEE80211_NODE_LOCK(nt); ni = ieee80211_find_vap_node_locked(nt, vap, mac); /* * Don't do the node update inside the node * table lock. This unfortunately causes LORs * with drivers and their TX paths. */ IEEE80211_NODE_UNLOCK(nt); if (ni != NULL) { mlmedebug(vap, mac, op, reason); if (op == IEEE80211_MLME_AUTHORIZE) ieee80211_node_authorize(ni); else ieee80211_node_unauthorize(ni); ieee80211_free_node(ni); } else error = ENOENT; break; case IEEE80211_MLME_AUTH: if (vap->iv_opmode != IEEE80211_M_HOSTAP) { error = EINVAL; break; } IEEE80211_NODE_LOCK(nt); ni = ieee80211_find_vap_node_locked(nt, vap, mac); /* * Don't do the node update inside the node * table lock. This unfortunately causes LORs * with drivers and their TX paths. */ IEEE80211_NODE_UNLOCK(nt); if (ni != NULL) { mlmedebug(vap, mac, op, reason); if (reason == IEEE80211_STATUS_SUCCESS) { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 2); /* * For shared key auth, just continue the * exchange. Otherwise when 802.1x is not in * use mark the port authorized at this point * so traffic can flow. */ if (ni->ni_authmode != IEEE80211_AUTH_8021X && ni->ni_challenge == NULL) ieee80211_node_authorize(ni); } else { vap->iv_stats.is_rx_acl++; ieee80211_send_error(ni, ni->ni_macaddr, IEEE80211_FC0_SUBTYPE_AUTH, 2|(reason<<16)); ieee80211_node_leave(ni); } ieee80211_free_node(ni); } else error = ENOENT; break; default: error = EINVAL; break; } return error; } struct scanlookup { const uint8_t *mac; int esslen; const uint8_t *essid; const struct ieee80211_scan_entry *se; }; /* * Match mac address and any ssid. */ static void mlmelookup(void *arg, const struct ieee80211_scan_entry *se) { struct scanlookup *look = arg; if (!IEEE80211_ADDR_EQ(look->mac, se->se_macaddr)) return; if (look->esslen != 0) { if (se->se_ssid[1] != look->esslen) return; if (memcmp(look->essid, se->se_ssid+2, look->esslen)) return; } look->se = se; } static int setmlme_assoc_sta(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len, const uint8_t ssid[IEEE80211_NWID_LEN]) { struct scanlookup lookup; KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("expected opmode STA not %s", ieee80211_opmode_name[vap->iv_opmode])); /* NB: this is racey if roaming is !manual */ lookup.se = NULL; lookup.mac = mac; lookup.esslen = ssid_len; lookup.essid = ssid; ieee80211_scan_iterate(vap, mlmelookup, &lookup); if (lookup.se == NULL) return ENOENT; mlmedebug(vap, mac, IEEE80211_MLME_ASSOC, 0); if (!ieee80211_sta_join(vap, lookup.se->se_chan, lookup.se)) return EIO; /* XXX unique but could be better */ return 0; } static int setmlme_assoc_adhoc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len, const uint8_t ssid[IEEE80211_NWID_LEN]) { struct ieee80211_scan_req *sr; int error; KASSERT(vap->iv_opmode == IEEE80211_M_IBSS || vap->iv_opmode == IEEE80211_M_AHDEMO, ("expected opmode IBSS or AHDEMO not %s", ieee80211_opmode_name[vap->iv_opmode])); if (ssid_len == 0 || ssid_len > IEEE80211_NWID_LEN) return EINVAL; sr = IEEE80211_MALLOC(sizeof(*sr), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (sr == NULL) return ENOMEM; /* NB: IEEE80211_IOC_SSID call missing for ap_scan=2. */ memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN); vap->iv_des_ssid[0].len = ssid_len; memcpy(vap->iv_des_ssid[0].ssid, ssid, ssid_len); vap->iv_des_nssid = 1; sr->sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE; sr->sr_duration = IEEE80211_IOC_SCAN_FOREVER; memcpy(sr->sr_ssid[0].ssid, ssid, ssid_len); sr->sr_ssid[0].len = ssid_len; sr->sr_nssid = 1; error = ieee80211_scanreq(vap, sr); IEEE80211_FREE(sr, M_TEMP); return error; } static int ieee80211_ioctl_setmlme(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211req_mlme mlme; int error; if (ireq->i_len != sizeof(mlme)) return EINVAL; error = copyin(ireq->i_data, &mlme, sizeof(mlme)); if (error) return error; if (vap->iv_opmode == IEEE80211_M_STA && mlme.im_op == IEEE80211_MLME_ASSOC) return setmlme_assoc_sta(vap, mlme.im_macaddr, vap->iv_des_ssid[0].len, vap->iv_des_ssid[0].ssid); else if ((vap->iv_opmode == IEEE80211_M_IBSS || vap->iv_opmode == IEEE80211_M_AHDEMO) && mlme.im_op == IEEE80211_MLME_ASSOC) return setmlme_assoc_adhoc(vap, mlme.im_macaddr, mlme.im_ssid_len, mlme.im_ssid); else return setmlme_common(vap, mlme.im_op, mlme.im_macaddr, mlme.im_reason); } static int ieee80211_ioctl_macmac(struct ieee80211vap *vap, struct ieee80211req *ireq) { uint8_t mac[IEEE80211_ADDR_LEN]; const struct ieee80211_aclator *acl = vap->iv_acl; int error; if (ireq->i_len != sizeof(mac)) return EINVAL; error = copyin(ireq->i_data, mac, ireq->i_len); if (error) return error; if (acl == NULL) { acl = ieee80211_aclator_get("mac"); if (acl == NULL || !acl->iac_attach(vap)) return EINVAL; vap->iv_acl = acl; } if (ireq->i_type == IEEE80211_IOC_ADDMAC) acl->iac_add(vap, mac); else acl->iac_remove(vap, mac); return 0; } static int ieee80211_ioctl_setmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq) { const struct ieee80211_aclator *acl = vap->iv_acl; switch (ireq->i_val) { case IEEE80211_MACCMD_POLICY_OPEN: case IEEE80211_MACCMD_POLICY_ALLOW: case IEEE80211_MACCMD_POLICY_DENY: case IEEE80211_MACCMD_POLICY_RADIUS: if (acl == NULL) { acl = ieee80211_aclator_get("mac"); if (acl == NULL || !acl->iac_attach(vap)) return EINVAL; vap->iv_acl = acl; } acl->iac_setpolicy(vap, ireq->i_val); break; case IEEE80211_MACCMD_FLUSH: if (acl != NULL) acl->iac_flush(vap); /* NB: silently ignore when not in use */ break; case IEEE80211_MACCMD_DETACH: if (acl != NULL) { vap->iv_acl = NULL; acl->iac_detach(vap); } break; default: if (acl == NULL) return EINVAL; else return acl->iac_setioctl(vap, ireq); } return 0; } static int ieee80211_ioctl_setchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; uint8_t *chanlist, *list; int i, nchan, maxchan, error; if (ireq->i_len > sizeof(ic->ic_chan_active)) ireq->i_len = sizeof(ic->ic_chan_active); list = IEEE80211_MALLOC(ireq->i_len + IEEE80211_CHAN_BYTES, M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (list == NULL) return ENOMEM; error = copyin(ireq->i_data, list, ireq->i_len); if (error) { IEEE80211_FREE(list, M_TEMP); return error; } nchan = 0; chanlist = list + ireq->i_len; /* NB: zero'd already */ maxchan = ireq->i_len * NBBY; for (i = 0; i < ic->ic_nchans; i++) { const struct ieee80211_channel *c = &ic->ic_channels[i]; /* * Calculate the intersection of the user list and the * available channels so users can do things like specify * 1-255 to get all available channels. */ if (c->ic_ieee < maxchan && isset(list, c->ic_ieee)) { setbit(chanlist, c->ic_ieee); nchan++; } } if (nchan == 0) { IEEE80211_FREE(list, M_TEMP); return EINVAL; } if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && /* XXX */ isclr(chanlist, ic->ic_bsschan->ic_ieee)) ic->ic_bsschan = IEEE80211_CHAN_ANYC; memcpy(ic->ic_chan_active, chanlist, IEEE80211_CHAN_BYTES); ieee80211_scan_flush(vap); IEEE80211_FREE(list, M_TEMP); return ENETRESET; } static int ieee80211_ioctl_setstastats(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; uint8_t macaddr[IEEE80211_ADDR_LEN]; int error; /* * NB: we could copyin ieee80211req_sta_stats so apps * could make selective changes but that's overkill; * just clear all stats for now. */ if (ireq->i_len < IEEE80211_ADDR_LEN) return EINVAL; error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN); if (error != 0) return error; ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr); if (ni == NULL) return ENOENT; /* XXX require ni_vap == vap? */ memset(&ni->ni_stats, 0, sizeof(ni->ni_stats)); ieee80211_free_node(ni); return 0; } static int ieee80211_ioctl_setstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; struct ieee80211req_sta_txpow txpow; int error; if (ireq->i_len != sizeof(txpow)) return EINVAL; error = copyin(ireq->i_data, &txpow, sizeof(txpow)); if (error != 0) return error; ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr); if (ni == NULL) return ENOENT; ni->ni_txpower = txpow.it_txpow; ieee80211_free_node(ni); return error; } static int ieee80211_ioctl_setwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_wme_state *wme = &ic->ic_wme; struct wmeParams *wmep, *chanp; int isbss, ac, aggrmode; if ((ic->ic_caps & IEEE80211_C_WME) == 0) return EOPNOTSUPP; isbss = (ireq->i_len & IEEE80211_WMEPARAM_BSS); ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL); aggrmode = (wme->wme_flags & WME_F_AGGRMODE); if (ac >= WME_NUM_AC) ac = WME_AC_BE; if (isbss) { chanp = &wme->wme_bssChanParams.cap_wmeParams[ac]; wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac]; } else { chanp = &wme->wme_chanParams.cap_wmeParams[ac]; wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac]; } switch (ireq->i_type) { case IEEE80211_IOC_WME_CWMIN: /* WME: CWmin */ wmep->wmep_logcwmin = ireq->i_val; if (!isbss || !aggrmode) chanp->wmep_logcwmin = ireq->i_val; break; case IEEE80211_IOC_WME_CWMAX: /* WME: CWmax */ wmep->wmep_logcwmax = ireq->i_val; if (!isbss || !aggrmode) chanp->wmep_logcwmax = ireq->i_val; break; case IEEE80211_IOC_WME_AIFS: /* WME: AIFS */ wmep->wmep_aifsn = ireq->i_val; if (!isbss || !aggrmode) chanp->wmep_aifsn = ireq->i_val; break; case IEEE80211_IOC_WME_TXOPLIMIT: /* WME: txops limit */ wmep->wmep_txopLimit = ireq->i_val; if (!isbss || !aggrmode) chanp->wmep_txopLimit = ireq->i_val; break; case IEEE80211_IOC_WME_ACM: /* WME: ACM (bss only) */ wmep->wmep_acm = ireq->i_val; if (!aggrmode) chanp->wmep_acm = ireq->i_val; break; case IEEE80211_IOC_WME_ACKPOLICY: /* WME: ACK policy (!bss only)*/ wmep->wmep_noackPolicy = chanp->wmep_noackPolicy = (ireq->i_val) == 0; break; } ieee80211_wme_updateparams(vap); return 0; } static int find11gchannel(struct ieee80211com *ic, int start, int freq) { const struct ieee80211_channel *c; int i; for (i = start+1; i < ic->ic_nchans; i++) { c = &ic->ic_channels[i]; if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c)) return 1; } /* NB: should not be needed but in case things are mis-sorted */ for (i = 0; i < start; i++) { c = &ic->ic_channels[i]; if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c)) return 1; } return 0; } static struct ieee80211_channel * findchannel(struct ieee80211com *ic, int ieee, int mode) { static const u_int chanflags[IEEE80211_MODE_MAX] = { [IEEE80211_MODE_AUTO] = 0, [IEEE80211_MODE_11A] = IEEE80211_CHAN_A, [IEEE80211_MODE_11B] = IEEE80211_CHAN_B, [IEEE80211_MODE_11G] = IEEE80211_CHAN_G, [IEEE80211_MODE_FH] = IEEE80211_CHAN_FHSS, [IEEE80211_MODE_TURBO_A] = IEEE80211_CHAN_108A, [IEEE80211_MODE_TURBO_G] = IEEE80211_CHAN_108G, [IEEE80211_MODE_STURBO_A] = IEEE80211_CHAN_STURBO, [IEEE80211_MODE_HALF] = IEEE80211_CHAN_HALF, [IEEE80211_MODE_QUARTER] = IEEE80211_CHAN_QUARTER, /* NB: handled specially below */ [IEEE80211_MODE_11NA] = IEEE80211_CHAN_A, [IEEE80211_MODE_11NG] = IEEE80211_CHAN_G, [IEEE80211_MODE_VHT_5GHZ] = IEEE80211_CHAN_A, [IEEE80211_MODE_VHT_2GHZ] = IEEE80211_CHAN_G, }; u_int modeflags; int i; modeflags = chanflags[mode]; for (i = 0; i < ic->ic_nchans; i++) { struct ieee80211_channel *c = &ic->ic_channels[i]; if (c->ic_ieee != ieee) continue; if (mode == IEEE80211_MODE_AUTO) { /* ignore turbo channels for autoselect */ if (IEEE80211_IS_CHAN_TURBO(c)) continue; /* * XXX special-case 11b/g channels so we * always select the g channel if both * are present. * XXX prefer HT to non-HT? */ if (!IEEE80211_IS_CHAN_B(c) || !find11gchannel(ic, i, c->ic_freq)) return c; } else { /* must check VHT specifically */ if ((mode == IEEE80211_MODE_VHT_5GHZ || mode == IEEE80211_MODE_VHT_2GHZ) && !IEEE80211_IS_CHAN_VHT(c)) continue; /* * Must check HT specially - only match on HT, * not HT+VHT channels */ if ((mode == IEEE80211_MODE_11NA || mode == IEEE80211_MODE_11NG) && !IEEE80211_IS_CHAN_HT(c)) continue; if ((mode == IEEE80211_MODE_11NA || mode == IEEE80211_MODE_11NG) && IEEE80211_IS_CHAN_VHT(c)) continue; /* Check that the modeflags above match */ if ((c->ic_flags & modeflags) == modeflags) return c; } } return NULL; } /* * Check the specified against any desired mode (aka netband). * This is only used (presently) when operating in hostap mode * to enforce consistency. */ static int check_mode_consistency(const struct ieee80211_channel *c, int mode) { KASSERT(c != IEEE80211_CHAN_ANYC, ("oops, no channel")); switch (mode) { case IEEE80211_MODE_11B: return (IEEE80211_IS_CHAN_B(c)); case IEEE80211_MODE_11G: return (IEEE80211_IS_CHAN_ANYG(c) && !IEEE80211_IS_CHAN_HT(c)); case IEEE80211_MODE_11A: return (IEEE80211_IS_CHAN_A(c) && !IEEE80211_IS_CHAN_HT(c)); case IEEE80211_MODE_STURBO_A: return (IEEE80211_IS_CHAN_STURBO(c)); case IEEE80211_MODE_11NA: return (IEEE80211_IS_CHAN_HTA(c)); case IEEE80211_MODE_11NG: return (IEEE80211_IS_CHAN_HTG(c)); } return 1; } /* * Common code to set the current channel. If the device * is up and running this may result in an immediate channel * change or a kick of the state machine. */ static int setcurchan(struct ieee80211vap *vap, struct ieee80211_channel *c) { struct ieee80211com *ic = vap->iv_ic; int error; if (c != IEEE80211_CHAN_ANYC) { if (IEEE80211_IS_CHAN_RADAR(c)) return EBUSY; /* XXX better code? */ if (vap->iv_opmode == IEEE80211_M_HOSTAP) { if (IEEE80211_IS_CHAN_NOHOSTAP(c)) return EINVAL; if (!check_mode_consistency(c, vap->iv_des_mode)) return EINVAL; } else if (vap->iv_opmode == IEEE80211_M_IBSS) { if (IEEE80211_IS_CHAN_NOADHOC(c)) return EINVAL; } if ((vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) && vap->iv_bss->ni_chan == c) return 0; /* NB: nothing to do */ } vap->iv_des_chan = c; error = 0; if (vap->iv_opmode == IEEE80211_M_MONITOR && vap->iv_des_chan != IEEE80211_CHAN_ANYC) { /* * Monitor mode can switch directly. */ if (IFNET_IS_UP_RUNNING(vap->iv_ifp)) { /* XXX need state machine for other vap's to follow */ ieee80211_setcurchan(ic, vap->iv_des_chan); vap->iv_bss->ni_chan = ic->ic_curchan; } else { ic->ic_curchan = vap->iv_des_chan; ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); } } else { /* * Need to go through the state machine in case we * need to reassociate or the like. The state machine * will pickup the desired channel and avoid scanning. */ if (IS_UP_AUTO(vap)) ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); else if (vap->iv_des_chan != IEEE80211_CHAN_ANYC) { /* * When not up+running and a real channel has * been specified fix the current channel so * there is immediate feedback; e.g. via ifconfig. */ ic->ic_curchan = vap->iv_des_chan; ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); } } return error; } /* * Old api for setting the current channel; this is * deprecated because channel numbers are ambiguous. */ static int ieee80211_ioctl_setchannel(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *c; /* XXX 0xffff overflows 16-bit signed */ if (ireq->i_val == 0 || ireq->i_val == (int16_t) IEEE80211_CHAN_ANY) { c = IEEE80211_CHAN_ANYC; } else { struct ieee80211_channel *c2; c = findchannel(ic, ireq->i_val, vap->iv_des_mode); if (c == NULL) { c = findchannel(ic, ireq->i_val, IEEE80211_MODE_AUTO); if (c == NULL) return EINVAL; } /* * Fine tune channel selection based on desired mode: * if 11b is requested, find the 11b version of any * 11g channel returned, * if static turbo, find the turbo version of any * 11a channel return, * if 11na is requested, find the ht version of any * 11a channel returned, * if 11ng is requested, find the ht version of any * 11g channel returned, * if 11ac is requested, find the 11ac version * of any 11a/11na channel returned, * (TBD) 11acg (2GHz VHT) * otherwise we should be ok with what we've got. */ switch (vap->iv_des_mode) { case IEEE80211_MODE_11B: if (IEEE80211_IS_CHAN_ANYG(c)) { c2 = findchannel(ic, ireq->i_val, IEEE80211_MODE_11B); /* NB: should not happen, =>'s 11g w/o 11b */ if (c2 != NULL) c = c2; } break; case IEEE80211_MODE_TURBO_A: if (IEEE80211_IS_CHAN_A(c)) { c2 = findchannel(ic, ireq->i_val, IEEE80211_MODE_TURBO_A); if (c2 != NULL) c = c2; } break; case IEEE80211_MODE_11NA: if (IEEE80211_IS_CHAN_A(c)) { c2 = findchannel(ic, ireq->i_val, IEEE80211_MODE_11NA); if (c2 != NULL) c = c2; } break; case IEEE80211_MODE_11NG: if (IEEE80211_IS_CHAN_ANYG(c)) { c2 = findchannel(ic, ireq->i_val, IEEE80211_MODE_11NG); if (c2 != NULL) c = c2; } break; case IEEE80211_MODE_VHT_2GHZ: printf("%s: TBD\n", __func__); break; case IEEE80211_MODE_VHT_5GHZ: if (IEEE80211_IS_CHAN_A(c)) { c2 = findchannel(ic, ireq->i_val, IEEE80211_MODE_VHT_5GHZ); if (c2 != NULL) c = c2; } break; default: /* NB: no static turboG */ break; } } return setcurchan(vap, c); } /* * New/current api for setting the current channel; a complete * channel description is provide so there is no ambiguity in * identifying the channel. */ static int ieee80211_ioctl_setcurchan(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel chan, *c; int error; if (ireq->i_len != sizeof(chan)) return EINVAL; error = copyin(ireq->i_data, &chan, sizeof(chan)); if (error != 0) return error; /* XXX 0xffff overflows 16-bit signed */ if (chan.ic_freq == 0 || chan.ic_freq == IEEE80211_CHAN_ANY) { c = IEEE80211_CHAN_ANYC; } else { c = ieee80211_find_channel(ic, chan.ic_freq, chan.ic_flags); if (c == NULL) return EINVAL; } return setcurchan(vap, c); } static int ieee80211_ioctl_setregdomain(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211_regdomain_req *reg; int nchans, error; nchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_regdomain_req)) / sizeof(struct ieee80211_channel)); if (!(1 <= nchans && nchans <= IEEE80211_CHAN_MAX)) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL, "%s: bad # chans, i_len %d nchans %d\n", __func__, ireq->i_len, nchans); return EINVAL; } reg = (struct ieee80211_regdomain_req *) IEEE80211_MALLOC(IEEE80211_REGDOMAIN_SIZE(nchans), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (reg == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL, "%s: no memory, nchans %d\n", __func__, nchans); return ENOMEM; } error = copyin(ireq->i_data, reg, IEEE80211_REGDOMAIN_SIZE(nchans)); if (error == 0) { /* NB: validate inline channel count against storage size */ if (reg->chaninfo.ic_nchans != nchans) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL, "%s: chan cnt mismatch, %d != %d\n", __func__, reg->chaninfo.ic_nchans, nchans); error = EINVAL; } else error = ieee80211_setregdomain(vap, reg); } IEEE80211_FREE(reg, M_TEMP); return (error == 0 ? ENETRESET : error); } static int checkrate(const struct ieee80211_rateset *rs, int rate) { int i; if (rate == IEEE80211_FIXED_RATE_NONE) return 1; for (i = 0; i < rs->rs_nrates; i++) if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) return 1; return 0; } static int checkmcs(const struct ieee80211_htrateset *rs, int mcs) { int rate_val = IEEE80211_RV(mcs); int i; if (mcs == IEEE80211_FIXED_RATE_NONE) return 1; if ((mcs & IEEE80211_RATE_MCS) == 0) /* MCS always have 0x80 set */ return 0; for (i = 0; i < rs->rs_nrates; i++) if (IEEE80211_RV(rs->rs_rates[i]) == rate_val) return 1; return 0; } static int ieee80211_ioctl_setroam(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_roamparams_req *parms; struct ieee80211_roamparam *src, *dst; const struct ieee80211_htrateset *rs_ht; const struct ieee80211_rateset *rs; int changed, error, mode, is11n, nmodes; if (ireq->i_len != sizeof(vap->iv_roamparms)) return EINVAL; parms = IEEE80211_MALLOC(sizeof(*parms), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (parms == NULL) return ENOMEM; error = copyin(ireq->i_data, parms, ireq->i_len); if (error != 0) goto fail; changed = 0; nmodes = IEEE80211_MODE_MAX; /* validate parameters and check if anything changed */ for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; src = &parms->params[mode]; dst = &vap->iv_roamparms[mode]; rs = &ic->ic_sup_rates[mode]; /* NB: 11n maps to legacy */ rs_ht = &ic->ic_sup_htrates; is11n = (mode == IEEE80211_MODE_11NA || mode == IEEE80211_MODE_11NG); /* XXX TODO: 11ac */ if (src->rate != dst->rate) { if (!checkrate(rs, src->rate) && (!is11n || !checkmcs(rs_ht, src->rate))) { error = EINVAL; goto fail; } changed++; } if (src->rssi != dst->rssi) changed++; } if (changed) { /* * Copy new parameters in place and notify the * driver so it can push state to the device. */ /* XXX locking? */ for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) { if (isset(ic->ic_modecaps, mode)) vap->iv_roamparms[mode] = parms->params[mode]; } if (vap->iv_roaming == IEEE80211_ROAMING_DEVICE) error = ERESTART; } fail: IEEE80211_FREE(parms, M_TEMP); return error; } static int ieee80211_ioctl_settxparams(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_txparams_req parms; /* XXX stack use? */ struct ieee80211_txparam *src, *dst; const struct ieee80211_htrateset *rs_ht; const struct ieee80211_rateset *rs; int error, mode, changed, is11n, nmodes; /* NB: accept short requests for backwards compat */ if (ireq->i_len > sizeof(parms)) return EINVAL; error = copyin(ireq->i_data, &parms, ireq->i_len); if (error != 0) return error; nmodes = ireq->i_len / sizeof(struct ieee80211_txparam); changed = 0; /* validate parameters and check if anything changed */ for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) { if (isclr(ic->ic_modecaps, mode)) continue; src = &parms.params[mode]; dst = &vap->iv_txparms[mode]; rs = &ic->ic_sup_rates[mode]; /* NB: 11n maps to legacy */ rs_ht = &ic->ic_sup_htrates; is11n = (mode == IEEE80211_MODE_11NA || mode == IEEE80211_MODE_11NG); if (src->ucastrate != dst->ucastrate) { if (!checkrate(rs, src->ucastrate) && (!is11n || !checkmcs(rs_ht, src->ucastrate))) return EINVAL; changed++; } if (src->mcastrate != dst->mcastrate) { if (!checkrate(rs, src->mcastrate) && (!is11n || !checkmcs(rs_ht, src->mcastrate))) return EINVAL; changed++; } if (src->mgmtrate != dst->mgmtrate) { if (!checkrate(rs, src->mgmtrate) && (!is11n || !checkmcs(rs_ht, src->mgmtrate))) return EINVAL; changed++; } if (src->maxretry != dst->maxretry) /* NB: no bounds */ changed++; } if (changed) { /* * Copy new parameters in place and notify the * driver so it can push state to the device. */ for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) { if (isset(ic->ic_modecaps, mode)) vap->iv_txparms[mode] = parms.params[mode]; } /* XXX could be more intelligent, e.g. don't reset if setting not being used */ return ENETRESET; } return 0; } /* * Application Information Element support. */ static int setappie(struct ieee80211_appie **aie, const struct ieee80211req *ireq) { struct ieee80211_appie *app = *aie; struct ieee80211_appie *napp; int error; if (ireq->i_len == 0) { /* delete any existing ie */ if (app != NULL) { *aie = NULL; /* XXX racey */ IEEE80211_FREE(app, M_80211_NODE_IE); } return 0; } if (!(2 <= ireq->i_len && ireq->i_len <= IEEE80211_MAX_APPIE)) return EINVAL; /* * Allocate a new appie structure and copy in the user data. * When done swap in the new structure. Note that we do not * guard against users holding a ref to the old structure; * this must be handled outside this code. * * XXX bad bad bad */ napp = (struct ieee80211_appie *) IEEE80211_MALLOC( sizeof(struct ieee80211_appie) + ireq->i_len, M_80211_NODE_IE, IEEE80211_M_NOWAIT); if (napp == NULL) return ENOMEM; /* XXX holding ic lock */ error = copyin(ireq->i_data, napp->ie_data, ireq->i_len); if (error) { IEEE80211_FREE(napp, M_80211_NODE_IE); return error; } napp->ie_len = ireq->i_len; *aie = napp; if (app != NULL) IEEE80211_FREE(app, M_80211_NODE_IE); return 0; } static void setwparsnie(struct ieee80211vap *vap, uint8_t *ie, int space) { /* validate data is present as best we can */ if (space == 0 || 2+ie[1] > space) return; if (ie[0] == IEEE80211_ELEMID_VENDOR) vap->iv_wpa_ie = ie; else if (ie[0] == IEEE80211_ELEMID_RSN) vap->iv_rsn_ie = ie; } static int ieee80211_ioctl_setappie_locked(struct ieee80211vap *vap, const struct ieee80211req *ireq, int fc0) { int error; IEEE80211_LOCK_ASSERT(vap->iv_ic); switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) { case IEEE80211_FC0_SUBTYPE_BEACON: if (vap->iv_opmode != IEEE80211_M_HOSTAP && vap->iv_opmode != IEEE80211_M_IBSS) { error = EINVAL; break; } error = setappie(&vap->iv_appie_beacon, ireq); if (error == 0) ieee80211_beacon_notify(vap, IEEE80211_BEACON_APPIE); break; case IEEE80211_FC0_SUBTYPE_PROBE_RESP: error = setappie(&vap->iv_appie_proberesp, ireq); break; case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: if (vap->iv_opmode == IEEE80211_M_HOSTAP) error = setappie(&vap->iv_appie_assocresp, ireq); else error = EINVAL; break; case IEEE80211_FC0_SUBTYPE_PROBE_REQ: error = setappie(&vap->iv_appie_probereq, ireq); break; case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: if (vap->iv_opmode == IEEE80211_M_STA) error = setappie(&vap->iv_appie_assocreq, ireq); else error = EINVAL; break; case (IEEE80211_APPIE_WPA & IEEE80211_FC0_SUBTYPE_MASK): error = setappie(&vap->iv_appie_wpa, ireq); if (error == 0) { /* * Must split single blob of data into separate * WPA and RSN ie's because they go in different * locations in the mgt frames. * XXX use IEEE80211_IOC_WPA2 so user code does split */ vap->iv_wpa_ie = NULL; vap->iv_rsn_ie = NULL; if (vap->iv_appie_wpa != NULL) { struct ieee80211_appie *appie = vap->iv_appie_wpa; uint8_t *data = appie->ie_data; /* XXX ie length validate is painful, cheat */ setwparsnie(vap, data, appie->ie_len); setwparsnie(vap, data + 2 + data[1], appie->ie_len - (2 + data[1])); } if (vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_IBSS) { /* * Must rebuild beacon frame as the update * mechanism doesn't handle WPA/RSN ie's. * Could extend it but it doesn't normally * change; this is just to deal with hostapd * plumbing the ie after the interface is up. */ error = ENETRESET; } } break; default: error = EINVAL; break; } return error; } static int ieee80211_ioctl_setappie(struct ieee80211vap *vap, const struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; int error; uint8_t fc0; fc0 = ireq->i_val & 0xff; if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) return EINVAL; /* NB: could check iv_opmode and reject but hardly worth the effort */ IEEE80211_LOCK(ic); error = ieee80211_ioctl_setappie_locked(vap, ireq, fc0); IEEE80211_UNLOCK(ic); return error; } static int ieee80211_ioctl_chanswitch(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_chanswitch_req csr; struct ieee80211_channel *c; int error; if (ireq->i_len != sizeof(csr)) return EINVAL; error = copyin(ireq->i_data, &csr, sizeof(csr)); if (error != 0) return error; /* XXX adhoc mode not supported */ if (vap->iv_opmode != IEEE80211_M_HOSTAP || (vap->iv_flags & IEEE80211_F_DOTH) == 0) return EOPNOTSUPP; c = ieee80211_find_channel(ic, csr.csa_chan.ic_freq, csr.csa_chan.ic_flags); if (c == NULL) return ENOENT; IEEE80211_LOCK(ic); if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) ieee80211_csa_startswitch(ic, c, csr.csa_mode, csr.csa_count); else if (csr.csa_count == 0) ieee80211_csa_cancelswitch(ic); else error = EBUSY; IEEE80211_UNLOCK(ic); return error; } static int ieee80211_scanreq(struct ieee80211vap *vap, struct ieee80211_scan_req *sr) { #define IEEE80211_IOC_SCAN_FLAGS \ (IEEE80211_IOC_SCAN_NOPICK | IEEE80211_IOC_SCAN_ACTIVE | \ IEEE80211_IOC_SCAN_PICK1ST | IEEE80211_IOC_SCAN_BGSCAN | \ IEEE80211_IOC_SCAN_ONCE | IEEE80211_IOC_SCAN_NOBCAST | \ IEEE80211_IOC_SCAN_NOJOIN | IEEE80211_IOC_SCAN_FLUSH | \ IEEE80211_IOC_SCAN_CHECK) struct ieee80211com *ic = vap->iv_ic; int error, i; /* convert duration */ if (sr->sr_duration == IEEE80211_IOC_SCAN_FOREVER) sr->sr_duration = IEEE80211_SCAN_FOREVER; else { if (sr->sr_duration < IEEE80211_IOC_SCAN_DURATION_MIN || sr->sr_duration > IEEE80211_IOC_SCAN_DURATION_MAX) return EINVAL; sr->sr_duration = msecs_to_ticks(sr->sr_duration); } /* convert min/max channel dwell */ if (sr->sr_mindwell != 0) sr->sr_mindwell = msecs_to_ticks(sr->sr_mindwell); if (sr->sr_maxdwell != 0) sr->sr_maxdwell = msecs_to_ticks(sr->sr_maxdwell); /* NB: silently reduce ssid count to what is supported */ if (sr->sr_nssid > IEEE80211_SCAN_MAX_SSID) sr->sr_nssid = IEEE80211_SCAN_MAX_SSID; for (i = 0; i < sr->sr_nssid; i++) if (sr->sr_ssid[i].len > IEEE80211_NWID_LEN) return EINVAL; /* cleanse flags just in case, could reject if invalid flags */ sr->sr_flags &= IEEE80211_IOC_SCAN_FLAGS; /* * Add an implicit NOPICK if the vap is not marked UP. This * allows applications to scan without joining a bss (or picking * a channel and setting up a bss) and without forcing manual * roaming mode--you just need to mark the parent device UP. */ if ((vap->iv_ifp->if_flags & IFF_UP) == 0) sr->sr_flags |= IEEE80211_IOC_SCAN_NOPICK; IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: vap %p iv_state %#x (%s) flags 0x%x%s " "duration 0x%x mindwell %u maxdwell %u nssid %d\n", __func__, vap, vap->iv_state, ieee80211_state_name[vap->iv_state], sr->sr_flags, (vap->iv_ifp->if_flags & IFF_UP) == 0 ? " (!IFF_UP)" : "", sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell, sr->sr_nssid); /* * If we are in INIT state then the driver has never had a chance * to setup hardware state to do a scan; we must use the state * machine to get us up to the SCAN state but once we reach SCAN * state we then want to use the supplied params. Stash the * parameters in the vap and mark IEEE80211_FEXT_SCANREQ; the * state machines will recognize this and use the stashed params * to issue the scan request. * * Otherwise just invoke the scan machinery directly. */ IEEE80211_LOCK(ic); if (ic->ic_nrunning == 0) { IEEE80211_UNLOCK(ic); return ENXIO; } if (vap->iv_state == IEEE80211_S_INIT) { /* NB: clobbers previous settings */ vap->iv_scanreq_flags = sr->sr_flags; vap->iv_scanreq_duration = sr->sr_duration; vap->iv_scanreq_nssid = sr->sr_nssid; for (i = 0; i < sr->sr_nssid; i++) { vap->iv_scanreq_ssid[i].len = sr->sr_ssid[i].len; memcpy(vap->iv_scanreq_ssid[i].ssid, sr->sr_ssid[i].ssid, sr->sr_ssid[i].len); } vap->iv_flags_ext |= IEEE80211_FEXT_SCANREQ; IEEE80211_UNLOCK(ic); ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); } else { vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; IEEE80211_UNLOCK(ic); if (sr->sr_flags & IEEE80211_IOC_SCAN_CHECK) { error = ieee80211_check_scan(vap, sr->sr_flags, sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell, sr->sr_nssid, /* NB: cheat, we assume structures are compatible */ (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]); } else { error = ieee80211_start_scan(vap, sr->sr_flags, sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell, sr->sr_nssid, /* NB: cheat, we assume structures are compatible */ (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]); } if (error == 0) return EINPROGRESS; } return 0; #undef IEEE80211_IOC_SCAN_FLAGS } static int ieee80211_ioctl_scanreq(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_scan_req *sr; int error; if (ireq->i_len != sizeof(*sr)) return EINVAL; sr = IEEE80211_MALLOC(sizeof(*sr), M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (sr == NULL) return ENOMEM; error = copyin(ireq->i_data, sr, sizeof(*sr)); if (error != 0) goto bad; error = ieee80211_scanreq(vap, sr); bad: IEEE80211_FREE(sr, M_TEMP); return error; } static int ieee80211_ioctl_setstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_node *ni; struct ieee80211req_sta_vlan vlan; int error; if (ireq->i_len != sizeof(vlan)) return EINVAL; error = copyin(ireq->i_data, &vlan, sizeof(vlan)); if (error != 0) return error; if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) { ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, vlan.sv_macaddr); if (ni == NULL) return ENOENT; } else ni = ieee80211_ref_node(vap->iv_bss); ni->ni_vlan = vlan.sv_vlan; ieee80211_free_node(ni); return error; } static int isvap11g(const struct ieee80211vap *vap) { const struct ieee80211_node *bss = vap->iv_bss; return bss->ni_chan != IEEE80211_CHAN_ANYC && IEEE80211_IS_CHAN_ANYG(bss->ni_chan); } static int isvapht(const struct ieee80211vap *vap) { const struct ieee80211_node *bss = vap->iv_bss; return bss->ni_chan != IEEE80211_CHAN_ANYC && IEEE80211_IS_CHAN_HT(bss->ni_chan); } /* * Dummy ioctl set handler so the linker set is defined. */ static int dummy_ioctl_set(struct ieee80211vap *vap, struct ieee80211req *ireq) { return ENOSYS; } IEEE80211_IOCTL_SET(dummy, dummy_ioctl_set); static int ieee80211_ioctl_setdefault(struct ieee80211vap *vap, struct ieee80211req *ireq) { ieee80211_ioctl_setfunc * const *set; int error; SET_FOREACH(set, ieee80211_ioctl_setset) { error = (*set)(vap, ireq); if (error != ENOSYS) return error; } return EINVAL; } static int ieee80211_ioctl_set80211(struct ieee80211vap *vap, u_long cmd, struct ieee80211req *ireq) { struct ieee80211com *ic = vap->iv_ic; int error; const struct ieee80211_authenticator *auth; uint8_t tmpkey[IEEE80211_KEYBUF_SIZE]; char tmpssid[IEEE80211_NWID_LEN]; uint8_t tmpbssid[IEEE80211_ADDR_LEN]; struct ieee80211_key *k; u_int kid; uint32_t flags; error = 0; switch (ireq->i_type) { case IEEE80211_IOC_SSID: if (ireq->i_val != 0 || ireq->i_len > IEEE80211_NWID_LEN) return EINVAL; error = copyin(ireq->i_data, tmpssid, ireq->i_len); if (error) break; memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN); vap->iv_des_ssid[0].len = ireq->i_len; memcpy(vap->iv_des_ssid[0].ssid, tmpssid, ireq->i_len); vap->iv_des_nssid = (ireq->i_len > 0); error = ENETRESET; break; case IEEE80211_IOC_WEP: switch (ireq->i_val) { case IEEE80211_WEP_OFF: vap->iv_flags &= ~IEEE80211_F_PRIVACY; vap->iv_flags &= ~IEEE80211_F_DROPUNENC; break; case IEEE80211_WEP_ON: vap->iv_flags |= IEEE80211_F_PRIVACY; vap->iv_flags |= IEEE80211_F_DROPUNENC; break; case IEEE80211_WEP_MIXED: vap->iv_flags |= IEEE80211_F_PRIVACY; vap->iv_flags &= ~IEEE80211_F_DROPUNENC; break; } error = ENETRESET; break; case IEEE80211_IOC_WEPKEY: kid = (u_int) ireq->i_val; if (kid >= IEEE80211_WEP_NKID) return EINVAL; k = &vap->iv_nw_keys[kid]; if (ireq->i_len == 0) { /* zero-len =>'s delete any existing key */ (void) ieee80211_crypto_delkey(vap, k); break; } if (ireq->i_len > sizeof(tmpkey)) return EINVAL; memset(tmpkey, 0, sizeof(tmpkey)); error = copyin(ireq->i_data, tmpkey, ireq->i_len); if (error) break; ieee80211_key_update_begin(vap); k->wk_keyix = kid; /* NB: force fixed key id */ if (ieee80211_crypto_newkey(vap, IEEE80211_CIPHER_WEP, IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV, k)) { k->wk_keylen = ireq->i_len; memcpy(k->wk_key, tmpkey, sizeof(tmpkey)); IEEE80211_ADDR_COPY(k->wk_macaddr, vap->iv_myaddr); if (!ieee80211_crypto_setkey(vap, k)) error = EINVAL; } else error = EINVAL; ieee80211_key_update_end(vap); break; case IEEE80211_IOC_WEPTXKEY: kid = (u_int) ireq->i_val; if (kid >= IEEE80211_WEP_NKID && (uint16_t) kid != IEEE80211_KEYIX_NONE) return EINVAL; /* * Firmware devices may need to be told about an explicit * key index here, versus just inferring it from the * key set / change. Since we may also need to pause * things like transmit before the key is updated, * give the driver a chance to flush things by tying * into key update begin/end. */ ieee80211_key_update_begin(vap); ieee80211_crypto_set_deftxkey(vap, kid); ieee80211_key_update_end(vap); break; case IEEE80211_IOC_AUTHMODE: switch (ireq->i_val) { case IEEE80211_AUTH_WPA: case IEEE80211_AUTH_8021X: /* 802.1x */ case IEEE80211_AUTH_OPEN: /* open */ case IEEE80211_AUTH_SHARED: /* shared-key */ case IEEE80211_AUTH_AUTO: /* auto */ auth = ieee80211_authenticator_get(ireq->i_val); if (auth == NULL) return EINVAL; break; default: return EINVAL; } switch (ireq->i_val) { case IEEE80211_AUTH_WPA: /* WPA w/ 802.1x */ vap->iv_flags |= IEEE80211_F_PRIVACY; ireq->i_val = IEEE80211_AUTH_8021X; break; case IEEE80211_AUTH_OPEN: /* open */ vap->iv_flags &= ~(IEEE80211_F_WPA|IEEE80211_F_PRIVACY); break; case IEEE80211_AUTH_SHARED: /* shared-key */ case IEEE80211_AUTH_8021X: /* 802.1x */ vap->iv_flags &= ~IEEE80211_F_WPA; /* both require a key so mark the PRIVACY capability */ vap->iv_flags |= IEEE80211_F_PRIVACY; break; case IEEE80211_AUTH_AUTO: /* auto */ vap->iv_flags &= ~IEEE80211_F_WPA; /* XXX PRIVACY handling? */ /* XXX what's the right way to do this? */ break; } /* NB: authenticator attach/detach happens on state change */ vap->iv_bss->ni_authmode = ireq->i_val; /* XXX mixed/mode/usage? */ vap->iv_auth = auth; error = ENETRESET; break; case IEEE80211_IOC_CHANNEL: error = ieee80211_ioctl_setchannel(vap, ireq); break; case IEEE80211_IOC_POWERSAVE: switch (ireq->i_val) { case IEEE80211_POWERSAVE_OFF: if (vap->iv_flags & IEEE80211_F_PMGTON) { ieee80211_syncflag(vap, -IEEE80211_F_PMGTON); error = ERESTART; } break; case IEEE80211_POWERSAVE_ON: if ((vap->iv_caps & IEEE80211_C_PMGT) == 0) error = EOPNOTSUPP; else if ((vap->iv_flags & IEEE80211_F_PMGTON) == 0) { ieee80211_syncflag(vap, IEEE80211_F_PMGTON); error = ERESTART; } break; default: error = EINVAL; break; } break; case IEEE80211_IOC_POWERSAVESLEEP: if (ireq->i_val < 0) return EINVAL; ic->ic_lintval = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_RTSTHRESHOLD: if (!(IEEE80211_RTS_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_RTS_MAX)) return EINVAL; vap->iv_rtsthreshold = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_PROTMODE: if (ireq->i_val > IEEE80211_PROT_RTSCTS) return EINVAL; vap->iv_protmode = (enum ieee80211_protmode)ireq->i_val; /* NB: if not operating in 11g this can wait */ if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan)) error = ERESTART; /* driver callback for protection mode update */ ieee80211_vap_update_erp_protmode(vap); break; case IEEE80211_IOC_TXPOWER: if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0) return EOPNOTSUPP; if (!(IEEE80211_TXPOWER_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_TXPOWER_MAX)) return EINVAL; ic->ic_txpowlimit = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_ROAMING: if (!(IEEE80211_ROAMING_DEVICE <= ireq->i_val && ireq->i_val <= IEEE80211_ROAMING_MANUAL)) return EINVAL; vap->iv_roaming = (enum ieee80211_roamingmode)ireq->i_val; /* XXXX reset? */ break; case IEEE80211_IOC_PRIVACY: if (ireq->i_val) { /* XXX check for key state? */ vap->iv_flags |= IEEE80211_F_PRIVACY; } else vap->iv_flags &= ~IEEE80211_F_PRIVACY; /* XXX ERESTART? */ break; case IEEE80211_IOC_DROPUNENCRYPTED: if (ireq->i_val) vap->iv_flags |= IEEE80211_F_DROPUNENC; else vap->iv_flags &= ~IEEE80211_F_DROPUNENC; /* XXX ERESTART? */ break; case IEEE80211_IOC_WPAKEY: error = ieee80211_ioctl_setkey(vap, ireq); break; case IEEE80211_IOC_DELKEY: error = ieee80211_ioctl_delkey(vap, ireq); break; case IEEE80211_IOC_MLME: error = ieee80211_ioctl_setmlme(vap, ireq); break; case IEEE80211_IOC_COUNTERMEASURES: if (ireq->i_val) { if ((vap->iv_flags & IEEE80211_F_WPA) == 0) return EOPNOTSUPP; vap->iv_flags |= IEEE80211_F_COUNTERM; } else vap->iv_flags &= ~IEEE80211_F_COUNTERM; /* XXX ERESTART? */ break; case IEEE80211_IOC_WPA: if (ireq->i_val > 3) return EINVAL; /* XXX verify ciphers available */ flags = vap->iv_flags & ~IEEE80211_F_WPA; switch (ireq->i_val) { case 0: /* wpa_supplicant calls this to clear the WPA config */ break; case 1: if (!(vap->iv_caps & IEEE80211_C_WPA1)) return EOPNOTSUPP; flags |= IEEE80211_F_WPA1; break; case 2: if (!(vap->iv_caps & IEEE80211_C_WPA2)) return EOPNOTSUPP; flags |= IEEE80211_F_WPA2; break; case 3: if ((vap->iv_caps & IEEE80211_C_WPA) != IEEE80211_C_WPA) return EOPNOTSUPP; flags |= IEEE80211_F_WPA1 | IEEE80211_F_WPA2; break; default: /* Can't set any -> error */ return EOPNOTSUPP; } vap->iv_flags = flags; error = ERESTART; /* NB: can change beacon frame */ break; case IEEE80211_IOC_WME: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_WME) == 0) return EOPNOTSUPP; ieee80211_syncflag(vap, IEEE80211_F_WME); } else ieee80211_syncflag(vap, -IEEE80211_F_WME); error = ERESTART; /* NB: can change beacon frame */ break; case IEEE80211_IOC_HIDESSID: if (ireq->i_val) vap->iv_flags |= IEEE80211_F_HIDESSID; else vap->iv_flags &= ~IEEE80211_F_HIDESSID; error = ERESTART; /* XXX ENETRESET? */ break; case IEEE80211_IOC_APBRIDGE: if (ireq->i_val == 0) vap->iv_flags |= IEEE80211_F_NOBRIDGE; else vap->iv_flags &= ~IEEE80211_F_NOBRIDGE; break; case IEEE80211_IOC_BSSID: if (ireq->i_len != sizeof(tmpbssid)) return EINVAL; error = copyin(ireq->i_data, tmpbssid, ireq->i_len); if (error) break; IEEE80211_ADDR_COPY(vap->iv_des_bssid, tmpbssid); if (IEEE80211_ADDR_EQ(vap->iv_des_bssid, zerobssid)) vap->iv_flags &= ~IEEE80211_F_DESBSSID; else vap->iv_flags |= IEEE80211_F_DESBSSID; error = ENETRESET; break; case IEEE80211_IOC_CHANLIST: error = ieee80211_ioctl_setchanlist(vap, ireq); break; #define OLD_IEEE80211_IOC_SCAN_REQ 23 #ifdef OLD_IEEE80211_IOC_SCAN_REQ case OLD_IEEE80211_IOC_SCAN_REQ: IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: active scan request\n", __func__); /* * If we are in INIT state then the driver has never * had a chance to setup hardware state to do a scan; * use the state machine to get us up the SCAN state. * Otherwise just invoke the scan machinery to start * a one-time scan. */ if (vap->iv_state == IEEE80211_S_INIT) ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); else (void) ieee80211_start_scan(vap, IEEE80211_SCAN_ACTIVE | IEEE80211_SCAN_NOPICK | IEEE80211_SCAN_ONCE, IEEE80211_SCAN_FOREVER, 0, 0, /* XXX use ioctl params */ vap->iv_des_nssid, vap->iv_des_ssid); break; #endif /* OLD_IEEE80211_IOC_SCAN_REQ */ case IEEE80211_IOC_SCAN_REQ: error = ieee80211_ioctl_scanreq(vap, ireq); break; case IEEE80211_IOC_SCAN_CANCEL: IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: cancel scan\n", __func__); ieee80211_cancel_scan(vap); break; case IEEE80211_IOC_HTCONF: if (ireq->i_val & 1) ieee80211_syncflag_ht(vap, IEEE80211_FHT_HT); else ieee80211_syncflag_ht(vap, -IEEE80211_FHT_HT); if (ireq->i_val & 2) ieee80211_syncflag_ht(vap, IEEE80211_FHT_USEHT40); else ieee80211_syncflag_ht(vap, -IEEE80211_FHT_USEHT40); error = ENETRESET; break; case IEEE80211_IOC_ADDMAC: case IEEE80211_IOC_DELMAC: error = ieee80211_ioctl_macmac(vap, ireq); break; case IEEE80211_IOC_MACCMD: error = ieee80211_ioctl_setmaccmd(vap, ireq); break; case IEEE80211_IOC_STA_STATS: error = ieee80211_ioctl_setstastats(vap, ireq); break; case IEEE80211_IOC_STA_TXPOW: error = ieee80211_ioctl_setstatxpow(vap, ireq); break; case IEEE80211_IOC_WME_CWMIN: /* WME: CWmin */ case IEEE80211_IOC_WME_CWMAX: /* WME: CWmax */ case IEEE80211_IOC_WME_AIFS: /* WME: AIFS */ case IEEE80211_IOC_WME_TXOPLIMIT: /* WME: txops limit */ case IEEE80211_IOC_WME_ACM: /* WME: ACM (bss only) */ case IEEE80211_IOC_WME_ACKPOLICY: /* WME: ACK policy (!bss only) */ error = ieee80211_ioctl_setwmeparam(vap, ireq); break; case IEEE80211_IOC_DTIM_PERIOD: if (vap->iv_opmode != IEEE80211_M_HOSTAP && vap->iv_opmode != IEEE80211_M_MBSS && vap->iv_opmode != IEEE80211_M_IBSS) return EINVAL; if (IEEE80211_DTIM_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_DTIM_MAX) { vap->iv_dtim_period = ireq->i_val; error = ENETRESET; /* requires restart */ } else error = EINVAL; break; case IEEE80211_IOC_BEACON_INTERVAL: if (vap->iv_opmode != IEEE80211_M_HOSTAP && vap->iv_opmode != IEEE80211_M_MBSS && vap->iv_opmode != IEEE80211_M_IBSS) return EINVAL; if (IEEE80211_BINTVAL_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_BINTVAL_MAX) { ic->ic_bintval = ireq->i_val; error = ENETRESET; /* requires restart */ } else error = EINVAL; break; case IEEE80211_IOC_PUREG: if (ireq->i_val) vap->iv_flags |= IEEE80211_F_PUREG; else vap->iv_flags &= ~IEEE80211_F_PUREG; /* NB: reset only if we're operating on an 11g channel */ if (isvap11g(vap)) error = ENETRESET; break; case IEEE80211_IOC_QUIET: vap->iv_quiet= ireq->i_val; break; case IEEE80211_IOC_QUIET_COUNT: vap->iv_quiet_count=ireq->i_val; break; case IEEE80211_IOC_QUIET_PERIOD: vap->iv_quiet_period=ireq->i_val; break; case IEEE80211_IOC_QUIET_OFFSET: vap->iv_quiet_offset=ireq->i_val; break; case IEEE80211_IOC_QUIET_DUR: if(ireq->i_val < vap->iv_bss->ni_intval) vap->iv_quiet_duration = ireq->i_val; else error = EINVAL; break; case IEEE80211_IOC_BGSCAN: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_BGSCAN) == 0) return EOPNOTSUPP; vap->iv_flags |= IEEE80211_F_BGSCAN; } else vap->iv_flags &= ~IEEE80211_F_BGSCAN; break; case IEEE80211_IOC_BGSCAN_IDLE: if (ireq->i_val >= IEEE80211_BGSCAN_IDLE_MIN) vap->iv_bgscanidle = ireq->i_val*hz/1000; else error = EINVAL; break; case IEEE80211_IOC_BGSCAN_INTERVAL: if (ireq->i_val >= IEEE80211_BGSCAN_INTVAL_MIN) vap->iv_bgscanintvl = ireq->i_val*hz; else error = EINVAL; break; case IEEE80211_IOC_SCANVALID: if (ireq->i_val >= IEEE80211_SCAN_VALID_MIN) vap->iv_scanvalid = ireq->i_val*hz; else error = EINVAL; break; case IEEE80211_IOC_FRAGTHRESHOLD: if ((vap->iv_caps & IEEE80211_C_TXFRAG) == 0 && ireq->i_val != IEEE80211_FRAG_MAX) return EOPNOTSUPP; if (!(IEEE80211_FRAG_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_FRAG_MAX)) return EINVAL; vap->iv_fragthreshold = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_BURST: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_BURST) == 0) return EOPNOTSUPP; ieee80211_syncflag(vap, IEEE80211_F_BURST); } else ieee80211_syncflag(vap, -IEEE80211_F_BURST); error = ERESTART; break; case IEEE80211_IOC_BMISSTHRESHOLD: if (!(IEEE80211_HWBMISS_MIN <= ireq->i_val && ireq->i_val <= IEEE80211_HWBMISS_MAX)) return EINVAL; vap->iv_bmissthreshold = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_CURCHAN: error = ieee80211_ioctl_setcurchan(vap, ireq); break; case IEEE80211_IOC_SHORTGI: if (ireq->i_val) { #define IEEE80211_HTCAP_SHORTGI \ (IEEE80211_HTCAP_SHORTGI20 | IEEE80211_HTCAP_SHORTGI40) if (((ireq->i_val ^ vap->iv_htcaps) & IEEE80211_HTCAP_SHORTGI) != 0) return EINVAL; if (ireq->i_val & IEEE80211_HTCAP_SHORTGI20) vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI20; if (ireq->i_val & IEEE80211_HTCAP_SHORTGI40) vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI40; #undef IEEE80211_HTCAP_SHORTGI } else vap->iv_flags_ht &= ~(IEEE80211_FHT_SHORTGI20 | IEEE80211_FHT_SHORTGI40); error = ERESTART; break; case IEEE80211_IOC_AMPDU: if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMPDU) == 0) return EINVAL; if (ireq->i_val & 1) vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_TX; else vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_TX; if (ireq->i_val & 2) vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_RX; else vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_AMPDU_LIMIT: /* XXX TODO: figure out ampdu_limit versus ampdu_rxmax */ if (!(IEEE80211_HTCAP_MAXRXAMPDU_8K <= ireq->i_val && ireq->i_val <= IEEE80211_HTCAP_MAXRXAMPDU_64K)) return EINVAL; if (vap->iv_opmode == IEEE80211_M_HOSTAP) vap->iv_ampdu_rxmax = ireq->i_val; else vap->iv_ampdu_limit = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_AMPDU_DENSITY: if (!(IEEE80211_HTCAP_MPDUDENSITY_NA <= ireq->i_val && ireq->i_val <= IEEE80211_HTCAP_MPDUDENSITY_16)) return EINVAL; vap->iv_ampdu_density = ireq->i_val; error = ERESTART; break; case IEEE80211_IOC_AMSDU: if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMSDU) == 0) return EINVAL; if (ireq->i_val & 1) vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_TX; else vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_TX; if (ireq->i_val & 2) vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_RX; else vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_RX; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_AMSDU_LIMIT: /* XXX validate */ vap->iv_amsdu_limit = ireq->i_val; /* XXX truncation? */ break; case IEEE80211_IOC_PUREN: if (ireq->i_val) { if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0) return EINVAL; vap->iv_flags_ht |= IEEE80211_FHT_PUREN; } else vap->iv_flags_ht &= ~IEEE80211_FHT_PUREN; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_DOTH: if (ireq->i_val) { #if 0 /* XXX no capability */ if ((vap->iv_caps & IEEE80211_C_DOTH) == 0) return EOPNOTSUPP; #endif vap->iv_flags |= IEEE80211_F_DOTH; } else vap->iv_flags &= ~IEEE80211_F_DOTH; error = ENETRESET; break; case IEEE80211_IOC_REGDOMAIN: error = ieee80211_ioctl_setregdomain(vap, ireq); break; case IEEE80211_IOC_ROAM: error = ieee80211_ioctl_setroam(vap, ireq); break; case IEEE80211_IOC_TXPARAMS: error = ieee80211_ioctl_settxparams(vap, ireq); break; case IEEE80211_IOC_HTCOMPAT: if (ireq->i_val) { if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0) return EOPNOTSUPP; vap->iv_flags_ht |= IEEE80211_FHT_HTCOMPAT; } else vap->iv_flags_ht &= ~IEEE80211_FHT_HTCOMPAT; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_DWDS: if (ireq->i_val) { /* NB: DWDS only makes sense for WDS-capable devices */ if ((ic->ic_caps & IEEE80211_C_WDS) == 0) return EOPNOTSUPP; /* NB: DWDS is used only with ap+sta vaps */ if (vap->iv_opmode != IEEE80211_M_HOSTAP && vap->iv_opmode != IEEE80211_M_STA) return EINVAL; vap->iv_flags |= IEEE80211_F_DWDS; if (vap->iv_opmode == IEEE80211_M_STA) vap->iv_flags_ext |= IEEE80211_FEXT_4ADDR; } else { vap->iv_flags &= ~IEEE80211_F_DWDS; if (vap->iv_opmode == IEEE80211_M_STA) vap->iv_flags_ext &= ~IEEE80211_FEXT_4ADDR; } break; case IEEE80211_IOC_INACTIVITY: if (ireq->i_val) vap->iv_flags_ext |= IEEE80211_FEXT_INACT; else vap->iv_flags_ext &= ~IEEE80211_FEXT_INACT; break; case IEEE80211_IOC_APPIE: error = ieee80211_ioctl_setappie(vap, ireq); break; case IEEE80211_IOC_WPS: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_WPA) == 0) return EOPNOTSUPP; vap->iv_flags_ext |= IEEE80211_FEXT_WPS; } else vap->iv_flags_ext &= ~IEEE80211_FEXT_WPS; break; case IEEE80211_IOC_TSN: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_WPA) == 0) return EOPNOTSUPP; vap->iv_flags_ext |= IEEE80211_FEXT_TSN; } else vap->iv_flags_ext &= ~IEEE80211_FEXT_TSN; break; case IEEE80211_IOC_CHANSWITCH: error = ieee80211_ioctl_chanswitch(vap, ireq); break; case IEEE80211_IOC_DFS: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_DFS) == 0) return EOPNOTSUPP; /* NB: DFS requires 11h support */ if ((vap->iv_flags & IEEE80211_F_DOTH) == 0) return EINVAL; vap->iv_flags_ext |= IEEE80211_FEXT_DFS; } else vap->iv_flags_ext &= ~IEEE80211_FEXT_DFS; break; case IEEE80211_IOC_DOTD: if (ireq->i_val) vap->iv_flags_ext |= IEEE80211_FEXT_DOTD; else vap->iv_flags_ext &= ~IEEE80211_FEXT_DOTD; if (vap->iv_opmode == IEEE80211_M_STA) error = ENETRESET; break; case IEEE80211_IOC_HTPROTMODE: if (ireq->i_val > IEEE80211_PROT_RTSCTS) return EINVAL; vap->iv_htprotmode = ireq->i_val ? IEEE80211_PROT_RTSCTS : IEEE80211_PROT_NONE; /* NB: if not operating in 11n this can wait */ if (isvapht(vap)) error = ERESTART; /* Notify driver layer of HT protmode changes */ ieee80211_vap_update_ht_protmode(vap); break; case IEEE80211_IOC_STA_VLAN: error = ieee80211_ioctl_setstavlan(vap, ireq); break; case IEEE80211_IOC_SMPS: if ((ireq->i_val &~ IEEE80211_HTCAP_SMPS) != 0 || ireq->i_val == 0x0008) /* value of 2 is reserved */ return EINVAL; if (ireq->i_val != IEEE80211_HTCAP_SMPS_OFF && (vap->iv_htcaps & IEEE80211_HTC_SMPS) == 0) return EOPNOTSUPP; vap->iv_htcaps = (vap->iv_htcaps &~ IEEE80211_HTCAP_SMPS) | ireq->i_val; /* NB: if not operating in 11n this can wait */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_RIFS: if (ireq->i_val != 0) { if ((vap->iv_htcaps & IEEE80211_HTC_RIFS) == 0) return EOPNOTSUPP; vap->iv_flags_ht |= IEEE80211_FHT_RIFS; } else vap->iv_flags_ht &= ~IEEE80211_FHT_RIFS; /* NB: if not operating in 11n this can wait */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_STBC: /* Check if we can do STBC TX/RX before changing the setting */ if ((ireq->i_val & 1) && ((vap->iv_htcaps & IEEE80211_HTCAP_TXSTBC) == 0)) return EOPNOTSUPP; if ((ireq->i_val & 2) && ((vap->iv_htcaps & IEEE80211_HTCAP_RXSTBC) == 0)) return EOPNOTSUPP; /* TX */ if (ireq->i_val & 1) vap->iv_flags_ht |= IEEE80211_FHT_STBC_TX; else vap->iv_flags_ht &= ~IEEE80211_FHT_STBC_TX; /* RX */ if (ireq->i_val & 2) vap->iv_flags_ht |= IEEE80211_FHT_STBC_RX; else vap->iv_flags_ht &= ~IEEE80211_FHT_STBC_RX; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_LDPC: /* Check if we can do LDPC TX/RX before changing the setting */ if ((ireq->i_val & 1) && (vap->iv_htcaps & IEEE80211_HTC_TXLDPC) == 0) return EOPNOTSUPP; if ((ireq->i_val & 2) && (vap->iv_htcaps & IEEE80211_HTCAP_LDPC) == 0) return EOPNOTSUPP; /* TX */ if (ireq->i_val & 1) vap->iv_flags_ht |= IEEE80211_FHT_LDPC_TX; else vap->iv_flags_ht &= ~IEEE80211_FHT_LDPC_TX; /* RX */ if (ireq->i_val & 2) vap->iv_flags_ht |= IEEE80211_FHT_LDPC_RX; else vap->iv_flags_ht &= ~IEEE80211_FHT_LDPC_RX; /* NB: reset only if we're operating on an 11n channel */ if (isvapht(vap)) error = ERESTART; break; case IEEE80211_IOC_UAPSD: if ((vap->iv_caps & IEEE80211_C_UAPSD) == 0) return EOPNOTSUPP; if (ireq->i_val == 0) vap->iv_flags_ext &= ~IEEE80211_FEXT_UAPSD; else if (ireq->i_val == 1) vap->iv_flags_ext |= IEEE80211_FEXT_UAPSD; else return EINVAL; break; /* VHT */ case IEEE80211_IOC_VHTCONF: if (ireq->i_val & IEEE80211_FVHT_VHT) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_VHT); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_VHT); if (ireq->i_val & IEEE80211_FVHT_USEVHT40) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT40); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT40); if (ireq->i_val & IEEE80211_FVHT_USEVHT80) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT80); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT80); if (ireq->i_val & IEEE80211_FVHT_USEVHT160) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT160); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT160); if (ireq->i_val & IEEE80211_FVHT_USEVHT80P80) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT80P80); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT80P80); /* Check if we can do STBC TX/RX before changing the setting. */ if ((ireq->i_val & IEEE80211_FVHT_STBC_TX) && ((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_TXSTBC) == 0)) return EOPNOTSUPP; if ((ireq->i_val & IEEE80211_FVHT_STBC_RX) && ((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_RXSTBC_MASK) == 0)) return EOPNOTSUPP; /* TX */ if (ireq->i_val & IEEE80211_FVHT_STBC_TX) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_TX); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_TX); /* RX */ if (ireq->i_val & IEEE80211_FVHT_STBC_RX) ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_RX); else ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_RX); error = ENETRESET; break; default: error = ieee80211_ioctl_setdefault(vap, ireq); break; } /* * The convention is that ENETRESET means an operation * requires a complete re-initialization of the device (e.g. * changing something that affects the association state). * ERESTART means the request may be handled with only a * reload of the hardware state. We hand ERESTART requests * to the iv_reset callback so the driver can decide. If * a device does not fillin iv_reset then it defaults to one * that returns ENETRESET. Otherwise a driver may return * ENETRESET (in which case a full reset will be done) or * 0 to mean there's no need to do anything (e.g. when the * change has no effect on the driver/device). */ if (error == ERESTART) error = IFNET_IS_UP_RUNNING(vap->iv_ifp) ? vap->iv_reset(vap, ireq->i_type) : 0; if (error == ENETRESET) { /* XXX need to re-think AUTO handling */ if (IS_UP_AUTO(vap)) ieee80211_init(vap); error = 0; } return error; } int ieee80211_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct ieee80211vap *vap = ifp->if_softc; struct ieee80211com *ic = vap->iv_ic; int error = 0, wait = 0, ic_used; struct ifreq *ifr; struct ifaddr *ifa; /* XXX */ ic_used = (cmd != SIOCSIFMTU && cmd != SIOCG80211STATS); if (ic_used && (error = ieee80211_com_vincref(vap)) != 0) return (error); switch (cmd) { case SIOCSIFFLAGS: IEEE80211_LOCK(ic); if ((ifp->if_flags ^ vap->iv_ifflags) & IFF_PROMISC) { /* * Enable promiscuous mode when: * 1. Interface is not a member of bridge, or * 2. Requested by user, or * 3. In monitor (or adhoc-demo) mode. */ if (ifp->if_bridge == NULL || (ifp->if_flags & IFF_PPROMISC) != 0 || vap->iv_opmode == IEEE80211_M_MONITOR || (vap->iv_opmode == IEEE80211_M_AHDEMO && (vap->iv_caps & IEEE80211_C_TDMA) == 0)) { ieee80211_promisc(vap, ifp->if_flags & IFF_PROMISC); vap->iv_ifflags ^= IFF_PROMISC; } } if ((ifp->if_flags ^ vap->iv_ifflags) & IFF_ALLMULTI) { ieee80211_allmulti(vap, ifp->if_flags & IFF_ALLMULTI); vap->iv_ifflags ^= IFF_ALLMULTI; } if (ifp->if_flags & IFF_UP) { /* * Bring ourself up unless we're already operational. * If we're the first vap and the parent is not up * then it will automatically be brought up as a * side-effect of bringing ourself up. */ if (vap->iv_state == IEEE80211_S_INIT) { if (ic->ic_nrunning == 0) wait = 1; ieee80211_start_locked(vap); } } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) { /* * Stop ourself. If we are the last vap to be * marked down the parent will also be taken down. */ if (ic->ic_nrunning == 1) wait = 1; ieee80211_stop_locked(vap); } IEEE80211_UNLOCK(ic); /* Wait for parent ioctl handler if it was queued */ if (wait) { struct epoch_tracker et; ieee80211_waitfor_parent(ic); /* * Check if the MAC address was changed * via SIOCSIFLLADDR ioctl. * * NB: device may be detached during initialization; * use if_ioctl for existence check. */ NET_EPOCH_ENTER(et); if (ifp->if_ioctl == ieee80211_ioctl && (ifp->if_flags & IFF_UP) == 0 && !IEEE80211_ADDR_EQ(vap->iv_myaddr, IF_LLADDR(ifp))) IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); NET_EPOCH_EXIT(et); } break; case SIOCADDMULTI: case SIOCDELMULTI: ieee80211_runtask(ic, &ic->ic_mcast_task); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: ifr = (struct ifreq *)data; error = ifmedia_ioctl(ifp, ifr, &vap->iv_media, cmd); break; case SIOCG80211: error = ieee80211_ioctl_get80211(vap, cmd, (struct ieee80211req *) data); break; case SIOCS80211: error = ieee80211_priv_check_vap_manage(cmd, vap, ifp); if (error == 0) error = ieee80211_ioctl_set80211(vap, cmd, (struct ieee80211req *) data); break; case SIOCG80211STATS: ifr = (struct ifreq *)data; error = copyout(&vap->iv_stats, ifr_data_get_ptr(ifr), sizeof(vap->iv_stats)); break; case SIOCSIFMTU: ifr = (struct ifreq *)data; if (!(IEEE80211_MTU_MIN <= ifr->ifr_mtu && ifr->ifr_mtu <= IEEE80211_MTU_MAX)) error = EINVAL; else ifp->if_mtu = ifr->ifr_mtu; break; case SIOCSIFADDR: /* * XXX Handle this directly so we can suppress if_init calls. * XXX This should be done in ether_ioctl but for the moment * XXX there are too many other parts of the system that * XXX set IFF_UP and so suppress if_init being called when * XXX it should be. */ ifa = (struct ifaddr *) data; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: if ((ifp->if_flags & IFF_UP) == 0) { ifp->if_flags |= IFF_UP; ifp->if_init(ifp->if_softc); } arp_ifinit(ifp, ifa); break; #endif default: if ((ifp->if_flags & IFF_UP) == 0) { ifp->if_flags |= IFF_UP; ifp->if_init(ifp->if_softc); } break; } break; case SIOCSIFLLADDR: error = ieee80211_priv_check_vap_setmac(cmd, vap, ifp); if (error == 0) break; /* Fallthrough */ default: /* * Pass unknown ioctls first to the driver, and if it * returns ENOTTY, then to the generic Ethernet handler. */ if (ic->ic_ioctl != NULL && (error = ic->ic_ioctl(ic, cmd, data)) != ENOTTY) break; error = ether_ioctl(ifp, cmd, data); break; } if (ic_used) ieee80211_com_vdecref(vap); return (error); } diff --git a/sys/net80211/ieee80211_mesh.c b/sys/net80211/ieee80211_mesh.c index c52122ebeb13..9f81bc3643aa 100644 --- a/sys/net80211/ieee80211_mesh.c +++ b/sys/net80211/ieee80211_mesh.c @@ -1,3612 +1,3612 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2009 The FreeBSD Foundation * * This software was developed by Rui Paulo under sponsorship from the * FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * IEEE 802.11s Mesh Point (MBSS) support. * * Based on March 2009, D3.0 802.11s draft spec. */ #include "opt_inet.h" #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #include #include static void mesh_rt_flush_invalid(struct ieee80211vap *); static int mesh_select_proto_path(struct ieee80211vap *, const char *); static int mesh_select_proto_metric(struct ieee80211vap *, const char *); static void mesh_vattach(struct ieee80211vap *); static int mesh_newstate(struct ieee80211vap *, enum ieee80211_state, int); static void mesh_rt_cleanup_cb(void *); static void mesh_gatemode_setup(struct ieee80211vap *); static void mesh_gatemode_cb(void *); static void mesh_linkchange(struct ieee80211_node *, enum ieee80211_mesh_mlstate); static void mesh_checkid(void *, struct ieee80211_node *); static uint32_t mesh_generateid(struct ieee80211vap *); static int mesh_checkpseq(struct ieee80211vap *, const uint8_t [IEEE80211_ADDR_LEN], uint32_t); static void mesh_transmit_to_gate(struct ieee80211vap *, struct mbuf *, struct ieee80211_mesh_route *); static void mesh_forward(struct ieee80211vap *, struct mbuf *, const struct ieee80211_meshcntl *); static int mesh_input(struct ieee80211_node *, struct mbuf *, const struct ieee80211_rx_stats *rxs, int, int); static void mesh_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, const struct ieee80211_rx_stats *rxs, int, int); static void mesh_recv_ctl(struct ieee80211_node *, struct mbuf *, int); static void mesh_peer_timeout_setup(struct ieee80211_node *); static void mesh_peer_timeout_backoff(struct ieee80211_node *); static void mesh_peer_timeout_cb(void *); static __inline void mesh_peer_timeout_stop(struct ieee80211_node *); static int mesh_verify_meshid(struct ieee80211vap *, const uint8_t *); static int mesh_verify_meshconf(struct ieee80211vap *, const uint8_t *); static int mesh_verify_meshpeer(struct ieee80211vap *, uint8_t, const uint8_t *); uint32_t mesh_airtime_calc(struct ieee80211_node *); /* * Timeout values come from the specification and are in milliseconds. */ static SYSCTL_NODE(_net_wlan, OID_AUTO, mesh, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "IEEE 802.11s parameters"); static int ieee80211_mesh_gateint = -1; SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, gateint, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_mesh_gateint, 0, ieee80211_sysctl_msecs_ticks, "I", "mesh gate interval (ms)"); static int ieee80211_mesh_retrytimeout = -1; SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, retrytimeout, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_mesh_retrytimeout, 0, ieee80211_sysctl_msecs_ticks, "I", "Retry timeout (msec)"); static int ieee80211_mesh_holdingtimeout = -1; SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, holdingtimeout, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_mesh_holdingtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", "Holding state timeout (msec)"); static int ieee80211_mesh_confirmtimeout = -1; SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, confirmtimeout, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_mesh_confirmtimeout, 0, ieee80211_sysctl_msecs_ticks, "I", "Confirm state timeout (msec)"); static int ieee80211_mesh_backofftimeout = -1; SYSCTL_PROC(_net_wlan_mesh, OID_AUTO, backofftimeout, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_mesh_backofftimeout, 0, ieee80211_sysctl_msecs_ticks, "I", "Backoff timeout (msec). This is to throutles peering forever when " "not receiving answer or is rejected by a neighbor"); static int ieee80211_mesh_maxretries = 2; SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxretries, CTLFLAG_RW, &ieee80211_mesh_maxretries, 0, "Maximum retries during peer link establishment"); static int ieee80211_mesh_maxholding = 2; SYSCTL_INT(_net_wlan_mesh, OID_AUTO, maxholding, CTLFLAG_RW, &ieee80211_mesh_maxholding, 0, "Maximum times we are allowed to transition to HOLDING state before " "backinoff during peer link establishment"); static const uint8_t broadcastaddr[IEEE80211_ADDR_LEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; static ieee80211_recv_action_func mesh_recv_action_meshpeering_open; static ieee80211_recv_action_func mesh_recv_action_meshpeering_confirm; static ieee80211_recv_action_func mesh_recv_action_meshpeering_close; static ieee80211_recv_action_func mesh_recv_action_meshlmetric; static ieee80211_recv_action_func mesh_recv_action_meshgate; static ieee80211_send_action_func mesh_send_action_meshpeering_open; static ieee80211_send_action_func mesh_send_action_meshpeering_confirm; static ieee80211_send_action_func mesh_send_action_meshpeering_close; static ieee80211_send_action_func mesh_send_action_meshlmetric; static ieee80211_send_action_func mesh_send_action_meshgate; static const struct ieee80211_mesh_proto_metric mesh_metric_airtime = { .mpm_descr = "AIRTIME", .mpm_ie = IEEE80211_MESHCONF_METRIC_AIRTIME, .mpm_metric = mesh_airtime_calc, }; static struct ieee80211_mesh_proto_path mesh_proto_paths[4]; static struct ieee80211_mesh_proto_metric mesh_proto_metrics[4]; MALLOC_DEFINE(M_80211_MESH_PREQ, "80211preq", "802.11 MESH Path Request frame"); MALLOC_DEFINE(M_80211_MESH_PREP, "80211prep", "802.11 MESH Path Reply frame"); MALLOC_DEFINE(M_80211_MESH_PERR, "80211perr", "802.11 MESH Path Error frame"); /* The longer one of the lifetime should be stored as new lifetime */ #define MESH_ROUTE_LIFETIME_MAX(a, b) (a > b ? a : b) MALLOC_DEFINE(M_80211_MESH_RT, "80211mesh_rt", "802.11s routing table"); MALLOC_DEFINE(M_80211_MESH_GT_RT, "80211mesh_gt", "802.11s known gates table"); /* * Helper functions to manipulate the Mesh routing table. */ static struct ieee80211_mesh_route * mesh_rt_find_locked(struct ieee80211_mesh_state *ms, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_route *rt; MESH_RT_LOCK_ASSERT(ms); TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { if (IEEE80211_ADDR_EQ(dest, rt->rt_dest)) return rt; } return NULL; } static struct ieee80211_mesh_route * mesh_rt_add_locked(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt; KASSERT(!IEEE80211_ADDR_EQ(broadcastaddr, dest), ("%s: adding broadcast to the routing table", __func__)); MESH_RT_LOCK_ASSERT(ms); rt = IEEE80211_MALLOC(ALIGN(sizeof(struct ieee80211_mesh_route)) + ms->ms_ppath->mpp_privlen, M_80211_MESH_RT, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (rt != NULL) { rt->rt_vap = vap; IEEE80211_ADDR_COPY(rt->rt_dest, dest); rt->rt_priv = (void *)ALIGN(&rt[1]); MESH_RT_ENTRY_LOCK_INIT(rt, "MBSS_RT"); callout_init(&rt->rt_discovery, 1); rt->rt_updtime = ticks; /* create time */ TAILQ_INSERT_TAIL(&ms->ms_routes, rt, rt_next); } return rt; } struct ieee80211_mesh_route * ieee80211_mesh_rt_find(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt; MESH_RT_LOCK(ms); rt = mesh_rt_find_locked(ms, dest); MESH_RT_UNLOCK(ms); return rt; } struct ieee80211_mesh_route * ieee80211_mesh_rt_add(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt; KASSERT(ieee80211_mesh_rt_find(vap, dest) == NULL, ("%s: duplicate entry in the routing table", __func__)); KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest), ("%s: adding self to the routing table", __func__)); MESH_RT_LOCK(ms); rt = mesh_rt_add_locked(vap, dest); MESH_RT_UNLOCK(ms); return rt; } /* * Update the route lifetime and returns the updated lifetime. * If new_lifetime is zero and route is timedout it will be invalidated. * new_lifetime is in msec */ int ieee80211_mesh_rt_update(struct ieee80211_mesh_route *rt, int new_lifetime) { int timesince, now; uint32_t lifetime = 0; KASSERT(rt != NULL, ("route is NULL")); now = ticks; MESH_RT_ENTRY_LOCK(rt); /* dont clobber a proxy entry gated by us */ if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY && rt->rt_nhops == 0) { MESH_RT_ENTRY_UNLOCK(rt); return rt->rt_lifetime; } timesince = ticks_to_msecs(now - rt->rt_updtime); rt->rt_updtime = now; if (timesince >= rt->rt_lifetime) { if (new_lifetime != 0) { rt->rt_lifetime = new_lifetime; } else { rt->rt_flags &= ~IEEE80211_MESHRT_FLAGS_VALID; rt->rt_lifetime = 0; } } else { /* update what is left of lifetime */ rt->rt_lifetime = rt->rt_lifetime - timesince; rt->rt_lifetime = MESH_ROUTE_LIFETIME_MAX( new_lifetime, rt->rt_lifetime); } lifetime = rt->rt_lifetime; MESH_RT_ENTRY_UNLOCK(rt); return lifetime; } /* * Add a proxy route (as needed) for the specified destination. */ void ieee80211_mesh_proxy_check(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt; MESH_RT_LOCK(ms); rt = mesh_rt_find_locked(ms, dest); if (rt == NULL) { rt = mesh_rt_add_locked(vap, dest); if (rt == NULL) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, "%s", "unable to add proxy entry"); vap->iv_stats.is_mesh_rtaddfailed++; } else { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, "%s", "add proxy entry"); IEEE80211_ADDR_COPY(rt->rt_mesh_gate, vap->iv_myaddr); IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID | IEEE80211_MESHRT_FLAGS_PROXY; } } else if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { KASSERT(rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY, ("no proxy flag for poxy entry")); struct ieee80211com *ic = vap->iv_ic; /* * Fix existing entry created by received frames from * stations that have some memory of dest. We also * flush any frames held on the staging queue; delivering * them is too much trouble right now. */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, "%s", "fix proxy entry"); IEEE80211_ADDR_COPY(rt->rt_nexthop, vap->iv_myaddr); rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID | IEEE80211_MESHRT_FLAGS_PROXY; /* XXX belongs in hwmp */ ieee80211_ageq_drain_node(&ic->ic_stageq, (void *)(uintptr_t) ieee80211_mac_hash(ic, dest)); /* XXX stat? */ } MESH_RT_UNLOCK(ms); } static __inline void mesh_rt_del(struct ieee80211_mesh_state *ms, struct ieee80211_mesh_route *rt) { TAILQ_REMOVE(&ms->ms_routes, rt, rt_next); /* * Grab the lock before destroying it, to be sure no one else * is holding the route. */ MESH_RT_ENTRY_LOCK(rt); callout_drain(&rt->rt_discovery); MESH_RT_ENTRY_LOCK_DESTROY(rt); IEEE80211_FREE(rt, M_80211_MESH_RT); } void ieee80211_mesh_rt_del(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt, *next; MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { if (IEEE80211_ADDR_EQ(rt->rt_dest, dest)) { if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) { ms->ms_ppath->mpp_senderror(vap, dest, rt, IEEE80211_REASON_MESH_PERR_NO_PROXY); } else { ms->ms_ppath->mpp_senderror(vap, dest, rt, IEEE80211_REASON_MESH_PERR_DEST_UNREACH); } mesh_rt_del(ms, rt); MESH_RT_UNLOCK(ms); return; } } MESH_RT_UNLOCK(ms); } void ieee80211_mesh_rt_flush(struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt, *next; if (ms == NULL) return; MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) mesh_rt_del(ms, rt); MESH_RT_UNLOCK(ms); } void ieee80211_mesh_rt_flush_peer(struct ieee80211vap *vap, const uint8_t peer[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt, *next; MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { if (IEEE80211_ADDR_EQ(rt->rt_nexthop, peer)) mesh_rt_del(ms, rt); } MESH_RT_UNLOCK(ms); } /* * Flush expired routing entries, i.e. those in invalid state for * some time. */ static void mesh_rt_flush_invalid(struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt, *next; if (ms == NULL) return; MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(rt, &ms->ms_routes, rt_next, next) { /* Discover paths will be deleted by their own callout */ if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_DISCOVER) continue; ieee80211_mesh_rt_update(rt, 0); if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) mesh_rt_del(ms, rt); } MESH_RT_UNLOCK(ms); } int ieee80211_mesh_register_proto_path(const struct ieee80211_mesh_proto_path *mpp) { int i, firstempty = -1; for (i = 0; i < nitems(mesh_proto_paths); i++) { if (strncmp(mpp->mpp_descr, mesh_proto_paths[i].mpp_descr, IEEE80211_MESH_PROTO_DSZ) == 0) return EEXIST; if (!mesh_proto_paths[i].mpp_active && firstempty == -1) firstempty = i; } if (firstempty < 0) return ENOSPC; memcpy(&mesh_proto_paths[firstempty], mpp, sizeof(*mpp)); mesh_proto_paths[firstempty].mpp_active = 1; return 0; } int ieee80211_mesh_register_proto_metric(const struct ieee80211_mesh_proto_metric *mpm) { int i, firstempty = -1; for (i = 0; i < nitems(mesh_proto_metrics); i++) { if (strncmp(mpm->mpm_descr, mesh_proto_metrics[i].mpm_descr, IEEE80211_MESH_PROTO_DSZ) == 0) return EEXIST; if (!mesh_proto_metrics[i].mpm_active && firstempty == -1) firstempty = i; } if (firstempty < 0) return ENOSPC; memcpy(&mesh_proto_metrics[firstempty], mpm, sizeof(*mpm)); mesh_proto_metrics[firstempty].mpm_active = 1; return 0; } static int mesh_select_proto_path(struct ieee80211vap *vap, const char *name) { struct ieee80211_mesh_state *ms = vap->iv_mesh; int i; for (i = 0; i < nitems(mesh_proto_paths); i++) { if (strcasecmp(mesh_proto_paths[i].mpp_descr, name) == 0) { ms->ms_ppath = &mesh_proto_paths[i]; return 0; } } return ENOENT; } static int mesh_select_proto_metric(struct ieee80211vap *vap, const char *name) { struct ieee80211_mesh_state *ms = vap->iv_mesh; int i; for (i = 0; i < nitems(mesh_proto_metrics); i++) { if (strcasecmp(mesh_proto_metrics[i].mpm_descr, name) == 0) { ms->ms_pmetric = &mesh_proto_metrics[i]; return 0; } } return ENOENT; } static void mesh_gatemode_setup(struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms = vap->iv_mesh; /* * NB: When a mesh gate is running as a ROOT it shall * not send out periodic GANNs but instead mark the * mesh gate flag for the corresponding proactive PREQ * and RANN frames. */ if (ms->ms_flags & IEEE80211_MESHFLAGS_ROOT || (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) == 0) { callout_drain(&ms->ms_gatetimer); return ; } callout_reset(&ms->ms_gatetimer, ieee80211_mesh_gateint, mesh_gatemode_cb, vap); } static void mesh_gatemode_cb(void *arg) { struct ieee80211vap *vap = (struct ieee80211vap *)arg; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_meshgann_ie gann; gann.gann_flags = 0; /* Reserved */ gann.gann_hopcount = 0; gann.gann_ttl = ms->ms_ttl; IEEE80211_ADDR_COPY(gann.gann_addr, vap->iv_myaddr); gann.gann_seq = ms->ms_gateseq++; gann.gann_interval = ieee80211_mesh_gateint; IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, vap->iv_bss, "send broadcast GANN (seq %u)", gann.gann_seq); ieee80211_send_action(vap->iv_bss, IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_GANN, &gann); mesh_gatemode_setup(vap); } static void ieee80211_mesh_init(void) { memset(mesh_proto_paths, 0, sizeof(mesh_proto_paths)); memset(mesh_proto_metrics, 0, sizeof(mesh_proto_metrics)); /* * Setup mesh parameters that depends on the clock frequency. */ ieee80211_mesh_gateint = msecs_to_ticks(10000); ieee80211_mesh_retrytimeout = msecs_to_ticks(40); ieee80211_mesh_holdingtimeout = msecs_to_ticks(40); ieee80211_mesh_confirmtimeout = msecs_to_ticks(40); ieee80211_mesh_backofftimeout = msecs_to_ticks(5000); /* * Register action frame handlers. */ ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_OPEN, mesh_recv_action_meshpeering_open); ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, mesh_recv_action_meshpeering_confirm); ieee80211_recv_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, mesh_recv_action_meshpeering_close); ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_LMETRIC, mesh_recv_action_meshlmetric); ieee80211_recv_action_register(IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_GANN, mesh_recv_action_meshgate); ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_OPEN, mesh_send_action_meshpeering_open); ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, mesh_send_action_meshpeering_confirm); ieee80211_send_action_register(IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, mesh_send_action_meshpeering_close); ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_LMETRIC, mesh_send_action_meshlmetric); ieee80211_send_action_register(IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_GANN, mesh_send_action_meshgate); /* * Register Airtime Link Metric. */ ieee80211_mesh_register_proto_metric(&mesh_metric_airtime); } SYSINIT(wlan_mesh, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_mesh_init, NULL); void ieee80211_mesh_attach(struct ieee80211com *ic) { ic->ic_vattach[IEEE80211_M_MBSS] = mesh_vattach; } void ieee80211_mesh_detach(struct ieee80211com *ic) { } static void mesh_vdetach_peers(void *arg, struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; uint16_t args[3]; if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED) { args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); } callout_drain(&ni->ni_mltimer); /* XXX belongs in hwmp */ ieee80211_ageq_drain_node(&ic->ic_stageq, (void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr)); } static void mesh_vdetach(struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms = vap->iv_mesh; callout_drain(&ms->ms_cleantimer); ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_vdetach_peers, NULL); ieee80211_mesh_rt_flush(vap); MESH_RT_LOCK_DESTROY(ms); ms->ms_ppath->mpp_vdetach(vap); IEEE80211_FREE(vap->iv_mesh, M_80211_VAP); vap->iv_mesh = NULL; } static void mesh_vattach(struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms; vap->iv_newstate = mesh_newstate; vap->iv_input = mesh_input; vap->iv_opdetach = mesh_vdetach; vap->iv_recv_mgmt = mesh_recv_mgmt; vap->iv_recv_ctl = mesh_recv_ctl; ms = IEEE80211_MALLOC(sizeof(struct ieee80211_mesh_state), M_80211_VAP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (ms == NULL) { printf("%s: couldn't alloc MBSS state\n", __func__); return; } vap->iv_mesh = ms; ms->ms_seq = 0; ms->ms_flags = (IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_FWD); ms->ms_ttl = IEEE80211_MESH_DEFAULT_TTL; TAILQ_INIT(&ms->ms_known_gates); TAILQ_INIT(&ms->ms_routes); MESH_RT_LOCK_INIT(ms, "MBSS"); callout_init(&ms->ms_cleantimer, 1); callout_init(&ms->ms_gatetimer, 1); ms->ms_gateseq = 0; mesh_select_proto_metric(vap, "AIRTIME"); KASSERT(ms->ms_pmetric, ("ms_pmetric == NULL")); mesh_select_proto_path(vap, "HWMP"); KASSERT(ms->ms_ppath, ("ms_ppath == NULL")); ms->ms_ppath->mpp_vattach(vap); } /* * IEEE80211_M_MBSS vap state machine handler. */ static int mesh_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ if (ostate != IEEE80211_S_SCAN) ieee80211_cancel_scan(vap); /* background scan */ ni = vap->iv_bss; /* NB: no reference held */ if (nstate != IEEE80211_S_RUN && ostate == IEEE80211_S_RUN) { callout_drain(&ms->ms_cleantimer); callout_drain(&ms->ms_gatetimer); } switch (nstate) { case IEEE80211_S_INIT: switch (ostate) { case IEEE80211_S_SCAN: ieee80211_cancel_scan(vap); break; case IEEE80211_S_CAC: ieee80211_dfs_cac_stop(vap); break; case IEEE80211_S_RUN: ieee80211_iterate_nodes(&ic->ic_sta, mesh_vdetach_peers, NULL); break; default: break; } if (ostate != IEEE80211_S_INIT) { /* NB: optimize INIT -> INIT case */ ieee80211_reset_bss(vap); ieee80211_mesh_rt_flush(vap); } break; case IEEE80211_S_SCAN: switch (ostate) { case IEEE80211_S_INIT: if (vap->iv_des_chan != IEEE80211_CHAN_ANYC && !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan) && ms->ms_idlen != 0) { /* * Already have a channel and a mesh ID; bypass * the scan and startup immediately. */ ieee80211_create_ibss(vap, vap->iv_des_chan); break; } /* * Initiate a scan. We can come here as a result * of an IEEE80211_IOC_SCAN_REQ too in which case * the vap will be marked with IEEE80211_FEXT_SCANREQ * and the scan request parameters will be present * in iv_scanreq. Otherwise we do the default. */ if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { ieee80211_check_scan(vap, vap->iv_scanreq_flags, vap->iv_scanreq_duration, vap->iv_scanreq_mindwell, vap->iv_scanreq_maxdwell, vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; } else ieee80211_check_scan_current(vap); break; default: break; } break; case IEEE80211_S_CAC: /* * Start CAC on a DFS channel. We come here when starting * a bss on a DFS channel (see ieee80211_create_ibss). */ ieee80211_dfs_cac_start(vap); break; case IEEE80211_S_RUN: switch (ostate) { case IEEE80211_S_INIT: /* * Already have a channel; bypass the * scan and startup immediately. * Note that ieee80211_create_ibss will call * back to do a RUN->RUN state change. */ ieee80211_create_ibss(vap, ieee80211_ht_adjust_channel(ic, ic->ic_curchan, vap->iv_flags_ht)); /* NB: iv_bss is changed on return */ break; case IEEE80211_S_CAC: /* * NB: This is the normal state change when CAC * expires and no radar was detected; no need to * clear the CAC timer as it's already expired. */ /* fall thru... */ case IEEE80211_S_CSA: #if 0 /* * Shorten inactivity timer of associated stations * to weed out sta's that don't follow a CSA. */ ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap); #endif /* * Update bss node channel to reflect where * we landed after CSA. */ ieee80211_node_set_chan(ni, ieee80211_ht_adjust_channel(ic, ic->ic_curchan, ieee80211_htchanflags(ni->ni_chan))); /* XXX bypass debug msgs */ break; case IEEE80211_S_SCAN: case IEEE80211_S_RUN: #ifdef IEEE80211_DEBUG if (ieee80211_msg_debug(vap)) { ieee80211_note(vap, "synchronized with %s meshid ", ether_sprintf(ni->ni_meshid)); ieee80211_print_essid(ni->ni_meshid, ni->ni_meshidlen); /* XXX MCS/HT */ printf(" channel %d\n", ieee80211_chan2ieee(ic, ic->ic_curchan)); } #endif break; default: break; } ieee80211_node_authorize(ni); callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, mesh_rt_cleanup_cb, vap); mesh_gatemode_setup(vap); break; default: break; } /* NB: ostate not nstate */ ms->ms_ppath->mpp_newstate(vap, ostate, arg); return 0; } static void mesh_rt_cleanup_cb(void *arg) { struct ieee80211vap *vap = arg; struct ieee80211_mesh_state *ms = vap->iv_mesh; mesh_rt_flush_invalid(vap); callout_reset(&ms->ms_cleantimer, ms->ms_ppath->mpp_inact, mesh_rt_cleanup_cb, vap); } /* * Mark a mesh STA as gate and return a pointer to it. * If this is first time, we create a new gate route. * Always update the path route to this mesh gate. */ struct ieee80211_mesh_gate_route * ieee80211_mesh_mark_gate(struct ieee80211vap *vap, const uint8_t *addr, struct ieee80211_mesh_route *rt) { struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_gate_route *gr = NULL, *next; int found = 0; MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, next) { if (IEEE80211_ADDR_EQ(gr->gr_addr, addr)) { found = 1; break; } } if (!found) { /* New mesh gate add it to known table. */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, addr, "%s", "stored new gate information from pro-PREQ."); gr = IEEE80211_MALLOC(ALIGN(sizeof(struct ieee80211_mesh_gate_route)), M_80211_MESH_GT_RT, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); IEEE80211_ADDR_COPY(gr->gr_addr, addr); TAILQ_INSERT_TAIL(&ms->ms_known_gates, gr, gr_next); } gr->gr_route = rt; /* TODO: link from path route to gate route */ MESH_RT_UNLOCK(ms); return gr; } /* * Helper function to note the Mesh Peer Link FSM change. */ static void mesh_linkchange(struct ieee80211_node *ni, enum ieee80211_mesh_mlstate state) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_mesh_state *ms = vap->iv_mesh; #ifdef IEEE80211_DEBUG static const char *meshlinkstates[] = { [IEEE80211_NODE_MESH_IDLE] = "IDLE", [IEEE80211_NODE_MESH_OPENSNT] = "OPEN SENT", [IEEE80211_NODE_MESH_OPENRCV] = "OPEN RECEIVED", [IEEE80211_NODE_MESH_CONFIRMRCV] = "CONFIRM RECEIVED", [IEEE80211_NODE_MESH_ESTABLISHED] = "ESTABLISHED", [IEEE80211_NODE_MESH_HOLDING] = "HOLDING" }; #endif IEEE80211_NOTE(vap, IEEE80211_MSG_MESH, ni, "peer link: %s -> %s", meshlinkstates[ni->ni_mlstate], meshlinkstates[state]); /* track neighbor count */ if (state == IEEE80211_NODE_MESH_ESTABLISHED && ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { KASSERT(ms->ms_neighbors < 65535, ("neighbor count overflow")); ms->ms_neighbors++; ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); } else if (ni->ni_mlstate == IEEE80211_NODE_MESH_ESTABLISHED && state != IEEE80211_NODE_MESH_ESTABLISHED) { KASSERT(ms->ms_neighbors > 0, ("neighbor count 0")); ms->ms_neighbors--; ieee80211_beacon_notify(vap, IEEE80211_BEACON_MESHCONF); } ni->ni_mlstate = state; switch (state) { case IEEE80211_NODE_MESH_HOLDING: ms->ms_ppath->mpp_peerdown(ni); break; case IEEE80211_NODE_MESH_ESTABLISHED: ieee80211_mesh_discover(vap, ni->ni_macaddr, NULL); break; default: break; } } /* * Helper function to generate a unique local ID required for mesh * peer establishment. */ static void mesh_checkid(void *arg, struct ieee80211_node *ni) { uint16_t *r = arg; if (*r == ni->ni_mllid) *(uint16_t *)arg = 0; } static uint32_t mesh_generateid(struct ieee80211vap *vap) { int maxiter = 4; uint16_t r; do { net80211_get_random_bytes(&r, 2); ieee80211_iterate_nodes(&vap->iv_ic->ic_sta, mesh_checkid, &r); maxiter--; } while (r == 0 && maxiter > 0); return r; } /* * Verifies if we already received this packet by checking its * sequence number. * Returns 0 if the frame is to be accepted, 1 otherwise. */ static int mesh_checkpseq(struct ieee80211vap *vap, const uint8_t source[IEEE80211_ADDR_LEN], uint32_t seq) { struct ieee80211_mesh_route *rt; rt = ieee80211_mesh_rt_find(vap, source); if (rt == NULL) { rt = ieee80211_mesh_rt_add(vap, source); if (rt == NULL) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, "%s", "add mcast route failed"); vap->iv_stats.is_mesh_rtaddfailed++; return 1; } IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, source, "add mcast route, mesh seqno %d", seq); rt->rt_lastmseq = seq; return 0; } if (IEEE80211_MESH_SEQ_GEQ(rt->rt_lastmseq, seq)) { return 1; } else { rt->rt_lastmseq = seq; return 0; } } /* * Iterate the routing table and locate the next hop. */ struct ieee80211_node * ieee80211_mesh_find_txnode(struct ieee80211vap *vap, const uint8_t dest[IEEE80211_ADDR_LEN]) { struct ieee80211_mesh_route *rt; rt = ieee80211_mesh_rt_find(vap, dest); if (rt == NULL) return NULL; if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, "%s: !valid, flags 0x%x", __func__, rt->rt_flags); /* XXX stat */ return NULL; } if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) { rt = ieee80211_mesh_rt_find(vap, rt->rt_mesh_gate); if (rt == NULL) return NULL; if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, dest, "%s: meshgate !valid, flags 0x%x", __func__, rt->rt_flags); /* XXX stat */ return NULL; } } return ieee80211_find_txnode(vap, rt->rt_nexthop); } static void mesh_transmit_to_gate(struct ieee80211vap *vap, struct mbuf *m, struct ieee80211_mesh_route *rt_gate) { struct ifnet *ifp = vap->iv_ifp; struct ieee80211_node *ni; IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic); ni = ieee80211_mesh_find_txnode(vap, rt_gate->rt_dest); if (ni == NULL) { if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); m_freem(m); return; } /* * Send through the VAP packet transmit path. * This consumes the node ref grabbed above and * the mbuf, regardless of whether there's a problem * or not. */ (void) ieee80211_vap_pkt_send_dest(vap, m, ni); } /* * Forward the queued frames to known valid mesh gates. * Assume destination to be outside the MBSS (i.e. proxy entry), * If no valid mesh gates are known silently discard queued frames. * After transmitting frames to all known valid mesh gates, this route * will be marked invalid, and a new path discovery will happen in the hopes * that (at least) one of the mesh gates have a new proxy entry for us to use. */ void ieee80211_mesh_forward_to_gates(struct ieee80211vap *vap, struct ieee80211_mesh_route *rt_dest) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt_gate; struct ieee80211_mesh_gate_route *gr = NULL, *gr_next; struct mbuf *m, *mcopy, *next; IEEE80211_TX_UNLOCK_ASSERT(ic); KASSERT( rt_dest->rt_flags == IEEE80211_MESHRT_FLAGS_DISCOVER, ("Route is not marked with IEEE80211_MESHRT_FLAGS_DISCOVER")); /* XXX: send to more than one valid mash gate */ MESH_RT_LOCK(ms); m = ieee80211_ageq_remove(&ic->ic_stageq, (struct ieee80211_node *)(uintptr_t) ieee80211_mac_hash(ic, rt_dest->rt_dest)); TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, gr_next) { rt_gate = gr->gr_route; if (rt_gate == NULL) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP, rt_dest->rt_dest, "mesh gate with no path %6D", gr->gr_addr, ":"); continue; } if ((rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) continue; KASSERT(rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_GATE, ("route not marked as a mesh gate")); KASSERT((rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) == 0, ("found mesh gate that is also marked porxy")); /* * convert route to a proxy route gated by the current * mesh gate, this is needed so encap can built data * frame with correct address. */ rt_dest->rt_flags = IEEE80211_MESHRT_FLAGS_PROXY | IEEE80211_MESHRT_FLAGS_VALID; rt_dest->rt_ext_seq = 1; /* random value */ IEEE80211_ADDR_COPY(rt_dest->rt_mesh_gate, rt_gate->rt_dest); IEEE80211_ADDR_COPY(rt_dest->rt_nexthop, rt_gate->rt_nexthop); rt_dest->rt_metric = rt_gate->rt_metric; rt_dest->rt_nhops = rt_gate->rt_nhops; ieee80211_mesh_rt_update(rt_dest, ms->ms_ppath->mpp_inact); MESH_RT_UNLOCK(ms); /* XXX: lock?? */ mcopy = m_dup(m, IEEE80211_M_NOWAIT); for (; mcopy != NULL; mcopy = next) { next = mcopy->m_nextpkt; mcopy->m_nextpkt = NULL; IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP, rt_dest->rt_dest, "flush queued frame %p len %d", mcopy, mcopy->m_pkthdr.len); mesh_transmit_to_gate(vap, mcopy, rt_gate); } MESH_RT_LOCK(ms); } rt_dest->rt_flags = 0; /* Mark invalid */ m_freem(m); MESH_RT_UNLOCK(ms); } /* * Forward the specified frame. * Decrement the TTL and set TA to our MAC address. */ static void mesh_forward(struct ieee80211vap *vap, struct mbuf *m, const struct ieee80211_meshcntl *mc) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ifnet *ifp = vap->iv_ifp; const struct ieee80211_frame *wh = mtod(m, const struct ieee80211_frame *); struct mbuf *mcopy; struct ieee80211_meshcntl *mccopy; struct ieee80211_frame *whcopy; struct ieee80211_node *ni; int err; /* This is called from the RX path - don't hold this lock */ IEEE80211_TX_UNLOCK_ASSERT(ic); /* * mesh ttl of 1 means we are the last one receiving it, * according to amendment we decrement and then check if * 0, if so we dont forward. */ if (mc->mc_ttl < 1) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, "%s", "frame not fwd'd, ttl 1"); vap->iv_stats.is_mesh_fwd_ttl++; return; } if (!(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, "%s", "frame not fwd'd, fwding disabled"); vap->iv_stats.is_mesh_fwd_disabled++; return; } mcopy = m_dup(m, IEEE80211_M_NOWAIT); if (mcopy == NULL) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, "%s", "frame not fwd'd, cannot dup"); vap->iv_stats.is_mesh_fwd_nobuf++; if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); return; } mcopy = m_pullup(mcopy, ieee80211_hdrspace(ic, wh) + sizeof(struct ieee80211_meshcntl)); if (mcopy == NULL) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, "%s", "frame not fwd'd, too short"); vap->iv_stats.is_mesh_fwd_tooshort++; if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); m_freem(mcopy); return; } whcopy = mtod(mcopy, struct ieee80211_frame *); mccopy = (struct ieee80211_meshcntl *) (mtod(mcopy, uint8_t *) + ieee80211_hdrspace(ic, wh)); /* XXX clear other bits? */ whcopy->i_fc[1] &= ~IEEE80211_FC1_RETRY; IEEE80211_ADDR_COPY(whcopy->i_addr2, vap->iv_myaddr); if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { ni = ieee80211_ref_node(vap->iv_bss); mcopy->m_flags |= M_MCAST; } else { ni = ieee80211_mesh_find_txnode(vap, whcopy->i_addr3); if (ni == NULL) { /* * [Optional] any of the following three actions: * o silently discard * o trigger a path discovery * o inform TA that meshDA is unknown. */ IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_MESH, wh, "%s", "frame not fwd'd, no path"); ms->ms_ppath->mpp_senderror(vap, whcopy->i_addr3, NULL, IEEE80211_REASON_MESH_PERR_NO_FI); vap->iv_stats.is_mesh_fwd_nopath++; m_freem(mcopy); return; } IEEE80211_ADDR_COPY(whcopy->i_addr1, ni->ni_macaddr); } KASSERT(mccopy->mc_ttl > 0, ("%s called with wrong ttl", __func__)); mccopy->mc_ttl--; /* XXX calculate priority so drivers can find the tx queue */ M_WME_SETAC(mcopy, WME_AC_BE); /* XXX do we know m_nextpkt is NULL? */ MPASS((mcopy->m_pkthdr.csum_flags & CSUM_SND_TAG) == 0); mcopy->m_pkthdr.rcvif = (void *) ni; /* * XXX this bypasses all of the VAP TX handling; it passes frames * directly to the parent interface. * * Because of this, there's no TX lock being held as there's no * encaps state being used. * * Doing a direct parent transmit may not be the correct thing * to do here; we'll have to re-think this soon. */ IEEE80211_TX_LOCK(ic); err = ieee80211_parent_xmitpkt(ic, mcopy); IEEE80211_TX_UNLOCK(ic); if (!err) if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); } static struct mbuf * mesh_decap(struct ieee80211vap *vap, struct mbuf *m, int hdrlen, int meshdrlen) { #define WHDIR(wh) ((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) #define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) uint8_t b[sizeof(struct ieee80211_qosframe_addr4) + sizeof(struct ieee80211_meshcntl_ae10)]; const struct ieee80211_qosframe_addr4 *wh; const struct ieee80211_meshcntl_ae10 *mc; struct ether_header *eh; struct llc *llc; int ae; if (m->m_len < hdrlen + sizeof(*llc) && (m = m_pullup(m, hdrlen + sizeof(*llc))) == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY, "discard data frame: %s", "m_pullup failed"); vap->iv_stats.is_rx_tooshort++; return NULL; } memcpy(b, mtod(m, caddr_t), hdrlen); wh = (const struct ieee80211_qosframe_addr4 *)&b[0]; mc = (const struct ieee80211_meshcntl_ae10 *)&b[hdrlen - meshdrlen]; KASSERT(WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS || WHDIR(wh) == IEEE80211_FC1_DIR_DSTODS, ("bogus dir, fc 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); llc = (struct llc *)(mtod(m, caddr_t) + hdrlen); if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP && llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 && llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0 && /* NB: preserve AppleTalk frames that have a native SNAP hdr */ !(llc->llc_snap.ether_type == htons(ETHERTYPE_AARP) || llc->llc_snap.ether_type == htons(ETHERTYPE_IPX))) { m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh)); llc = NULL; } else { m_adj(m, hdrlen - sizeof(*eh)); } eh = mtod(m, struct ether_header *); ae = mc->mc_flags & IEEE80211_MESH_AE_MASK; if (WHDIR(wh) == IEEE80211_FC1_DIR_FROMDS) { IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr1); if (ae == IEEE80211_MESH_AE_00) { IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr3); } else if (ae == IEEE80211_MESH_AE_01) { IEEE80211_ADDR_COPY(eh->ether_shost, MC01(mc)->mc_addr4); } else { IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, (const struct ieee80211_frame *)wh, NULL, "bad AE %d", ae); vap->iv_stats.is_mesh_badae++; m_freem(m); return NULL; } } else { if (ae == IEEE80211_MESH_AE_00) { IEEE80211_ADDR_COPY(eh->ether_dhost, wh->i_addr3); IEEE80211_ADDR_COPY(eh->ether_shost, wh->i_addr4); } else if (ae == IEEE80211_MESH_AE_10) { IEEE80211_ADDR_COPY(eh->ether_dhost, mc->mc_addr5); IEEE80211_ADDR_COPY(eh->ether_shost, mc->mc_addr6); } else { IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, (const struct ieee80211_frame *)wh, NULL, "bad AE %d", ae); vap->iv_stats.is_mesh_badae++; m_freem(m); return NULL; } } #ifndef __NO_STRICT_ALIGNMENT if (!ALIGNED_POINTER(mtod(m, caddr_t) + sizeof(*eh), uint32_t)) { m = ieee80211_realign(vap, m, sizeof(*eh)); if (m == NULL) return NULL; } #endif /* !__NO_STRICT_ALIGNMENT */ if (llc != NULL) { eh = mtod(m, struct ether_header *); eh->ether_type = htons(m->m_pkthdr.len - sizeof(*eh)); } return m; #undef WDIR #undef MC01 } /* * Return non-zero if the unicast mesh data frame should be processed * locally. Frames that are not proxy'd have our address, otherwise * we need to consult the routing table to look for a proxy entry. */ static __inline int mesh_isucastforme(struct ieee80211vap *vap, const struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) { int ae = mc->mc_flags & 3; KASSERT((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS, ("bad dir 0x%x:0x%x", wh->i_fc[0], wh->i_fc[1])); KASSERT(ae == IEEE80211_MESH_AE_00 || ae == IEEE80211_MESH_AE_10, ("bad AE %d", ae)); if (ae == IEEE80211_MESH_AE_10) { /* ucast w/ proxy */ const struct ieee80211_meshcntl_ae10 *mc10 = (const struct ieee80211_meshcntl_ae10 *) mc; struct ieee80211_mesh_route *rt = ieee80211_mesh_rt_find(vap, mc10->mc_addr5); /* check for proxy route to ourself */ return (rt != NULL && (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY)); } else /* ucast w/o proxy */ return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); } /* * Verifies transmitter, updates lifetime, precursor list and forwards data. * > 0 means we have forwarded data and no need to process locally * == 0 means we want to process locally (and we may have forwarded data * < 0 means there was an error and data should be discarded */ static int mesh_recv_indiv_data_to_fwrd(struct ieee80211vap *vap, struct mbuf *m, struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) { struct ieee80211_qosframe_addr4 *qwh; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt_meshda, *rt_meshsa; /* This is called from the RX path - don't hold this lock */ IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic); qwh = (struct ieee80211_qosframe_addr4 *)wh; /* * TODO: * o verify addr2 is a legitimate transmitter * o lifetime of precursor of addr3 (addr2) is max(init, curr) * o lifetime of precursor of addr4 (nexthop) is max(init, curr) */ /* set lifetime of addr3 (meshDA) to initial value */ rt_meshda = ieee80211_mesh_rt_find(vap, qwh->i_addr3); if (rt_meshda == NULL) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, qwh->i_addr2, "no route to meshDA(%6D)", qwh->i_addr3, ":"); /* * [Optional] any of the following three actions: * o silently discard [X] * o trigger a path discovery [ ] * o inform TA that meshDA is unknown. [ ] */ /* XXX: stats */ return (-1); } ieee80211_mesh_rt_update(rt_meshda, ticks_to_msecs( ms->ms_ppath->mpp_inact)); /* set lifetime of addr4 (meshSA) to initial value */ rt_meshsa = ieee80211_mesh_rt_find(vap, qwh->i_addr4); KASSERT(rt_meshsa != NULL, ("no route")); ieee80211_mesh_rt_update(rt_meshsa, ticks_to_msecs( ms->ms_ppath->mpp_inact)); mesh_forward(vap, m, mc); return (1); /* dont process locally */ } /* * Verifies transmitter, updates lifetime, precursor list and process data * locally, if data is proxy with AE = 10 it could mean data should go * on another mesh path or data should be forwarded to the DS. * * > 0 means we have forwarded data and no need to process locally * == 0 means we want to process locally (and we may have forwarded data * < 0 means there was an error and data should be discarded */ static int mesh_recv_indiv_data_to_me(struct ieee80211vap *vap, struct mbuf *m, struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) { struct ieee80211_qosframe_addr4 *qwh; const struct ieee80211_meshcntl_ae10 *mc10; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_route *rt; int ae; /* This is called from the RX path - don't hold this lock */ IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic); qwh = (struct ieee80211_qosframe_addr4 *)wh; mc10 = (const struct ieee80211_meshcntl_ae10 *)mc; /* * TODO: * o verify addr2 is a legitimate transmitter * o lifetime of precursor entry is max(init, curr) */ /* set lifetime of addr4 (meshSA) to initial value */ rt = ieee80211_mesh_rt_find(vap, qwh->i_addr4); KASSERT(rt != NULL, ("no route")); ieee80211_mesh_rt_update(rt, ticks_to_msecs(ms->ms_ppath->mpp_inact)); rt = NULL; ae = mc10->mc_flags & IEEE80211_MESH_AE_MASK; KASSERT(ae == IEEE80211_MESH_AE_00 || ae == IEEE80211_MESH_AE_10, ("bad AE %d", ae)); if (ae == IEEE80211_MESH_AE_10) { if (IEEE80211_ADDR_EQ(mc10->mc_addr5, qwh->i_addr3)) { return (0); /* process locally */ } rt = ieee80211_mesh_rt_find(vap, mc10->mc_addr5); if (rt != NULL && (rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) && (rt->rt_flags & IEEE80211_MESHRT_FLAGS_PROXY) == 0) { /* * Forward on another mesh-path, according to * amendment as specified in 9.32.4.1 */ IEEE80211_ADDR_COPY(qwh->i_addr3, mc10->mc_addr5); mesh_forward(vap, m, (const struct ieee80211_meshcntl *)mc10); return (1); /* dont process locally */ } /* * All other cases: forward of MSDUs from the MBSS to DS indiv. * addressed according to 13.11.3.2. */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, qwh->i_addr2, "forward frame to DS, SA(%6D) DA(%6D)", mc10->mc_addr6, ":", mc10->mc_addr5, ":"); } return (0); /* process locally */ } /* * Try to forward the group addressed data on to other mesh STAs, and * also to the DS. * * > 0 means we have forwarded data and no need to process locally * == 0 means we want to process locally (and we may have forwarded data * < 0 means there was an error and data should be discarded */ static int mesh_recv_group_data(struct ieee80211vap *vap, struct mbuf *m, struct ieee80211_frame *wh, const struct ieee80211_meshcntl *mc) { #define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) struct ieee80211_mesh_state *ms = vap->iv_mesh; /* This is called from the RX path - don't hold this lock */ IEEE80211_TX_UNLOCK_ASSERT(vap->iv_ic); mesh_forward(vap, m, mc); if(mc->mc_ttl > 0) { if (mc->mc_flags & IEEE80211_MESH_AE_01) { /* * Forward of MSDUs from the MBSS to DS group addressed * (according to 13.11.3.2) * This happens by delivering the packet, and a bridge * will sent it on another port member. */ if (ms->ms_flags & IEEE80211_MESHFLAGS_GATE && ms->ms_flags & IEEE80211_MESHFLAGS_FWD) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, MC01(mc)->mc_addr4, "%s", "forward from MBSS to the DS"); } } } return (0); /* process locally */ #undef MC01 } static int mesh_input(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { #define HAS_SEQ(type) ((type & 0x4) == 0) #define MC01(mc) ((const struct ieee80211_meshcntl_ae01 *)mc) struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ifnet *ifp = vap->iv_ifp; struct ieee80211_frame *wh; const struct ieee80211_meshcntl *mc; int hdrspace, meshdrlen, need_tap, error; uint8_t dir, type, subtype, ae; uint32_t seq; const uint8_t *addr; uint8_t qos[2]; KASSERT(ni != NULL, ("null node")); ni->ni_inact = ni->ni_inact_reload; need_tap = 1; /* mbuf need to be tapped. */ type = -1; /* undefined */ /* This is called from the RX path - don't hold this lock */ IEEE80211_TX_UNLOCK_ASSERT(ic); if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (1): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } /* * Bit of a cheat here, we use a pointer for a 3-address * frame format but don't reference fields past outside * ieee80211_frame_min w/o first validating the data is * present. */ wh = mtod(m, struct ieee80211_frame *); if (!IEEE80211_IS_FC0_CHECK_VER(wh, IEEE80211_FC0_VERSION_0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "wrong version %x", wh->i_fc[0]); vap->iv_stats.is_rx_badversion++; goto err; } dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; if (HAS_SEQ(type)) { uint8_t tid = ieee80211_gettid(wh); if (IEEE80211_QOS_HAS_SEQ(wh) && TID_TO_WME_AC(tid) >= WME_AC_VI) ic->ic_wme.wme_hipri_traffic++; if (! ieee80211_check_rxseq(ni, wh, wh->i_addr1, rxs)) goto out; } } #ifdef IEEE80211_DEBUG /* * It's easier, but too expensive, to simulate different mesh * topologies by consulting the ACL policy very early, so do this * only under DEBUG. * * NB: this check is also done upon peering link initiation. */ if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, wh, NULL, "%s", "disallowed by ACL"); vap->iv_stats.is_rx_acl++; goto out; } #endif switch (type) { case IEEE80211_FC0_TYPE_DATA: if (ni == vap->iv_bss) goto out; if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, NULL, "peer link not yet established (%d)", ni->ni_mlstate); vap->iv_stats.is_mesh_nolink++; goto out; } if (dir != IEEE80211_FC1_DIR_FROMDS && dir != IEEE80211_FC1_DIR_DSTODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto err; } /* All Mesh data frames are QoS subtype */ if (!HAS_SEQ(type)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect subtype 0x%x", subtype); vap->iv_stats.is_rx_badsubtype++; goto err; } /* * Next up, any fragmentation. * XXX: we defrag before we even try to forward, * Mesh Control field is not present in sub-sequent * fragmented frames. This is in contrast to Draft 4.0. */ hdrspace = ieee80211_hdrspace(ic, wh); if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { m = ieee80211_defrag(ni, m, hdrspace, 0); if (m == NULL) { /* Fragment dropped or frame not complete yet */ goto out; } } wh = mtod(m, struct ieee80211_frame *); /* NB: after defrag */ /* * Now we have a complete Mesh Data frame. */ /* * Only fromDStoDS data frames use 4 address qos frames * as specified in amendment. Otherwise addr4 is located * in the Mesh Control field and a 3 address qos frame * is used. */ *(uint16_t *)qos = *(uint16_t *)ieee80211_getqos(wh); /* * NB: The mesh STA sets the Mesh Control Present * subfield to 1 in the Mesh Data frame containing * an unfragmented MSDU, an A-MSDU, or the first * fragment of an MSDU. * After defrag it should always be present. */ if (!(qos[1] & IEEE80211_QOS_MC)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, NULL, "%s", "Mesh control field not present"); vap->iv_stats.is_rx_elem_missing++; /* XXX: kinda */ goto err; } /* pull up enough to get to the mesh control */ if (m->m_len < hdrspace + sizeof(struct ieee80211_meshcntl) && (m = m_pullup(m, hdrspace + sizeof(struct ieee80211_meshcntl))) == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "data too short: expecting %u", hdrspace); vap->iv_stats.is_rx_tooshort++; goto out; /* XXX */ } /* * Now calculate the full extent of the headers. Note * mesh_decap will pull up anything we didn't get * above when it strips the 802.11 headers. */ mc = (const struct ieee80211_meshcntl *) (mtod(m, const uint8_t *) + hdrspace); ae = mc->mc_flags & IEEE80211_MESH_AE_MASK; meshdrlen = sizeof(struct ieee80211_meshcntl) + ae * IEEE80211_ADDR_LEN; hdrspace += meshdrlen; /* pull complete hdrspace = ieee80211_hdrspace + meshcontrol */ if ((meshdrlen > sizeof(struct ieee80211_meshcntl)) && (m->m_len < hdrspace) && ((m = m_pullup(m, hdrspace)) == NULL)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "data too short: expecting %u", hdrspace); vap->iv_stats.is_rx_tooshort++; goto out; /* XXX */ } /* XXX: are we sure there is no reallocating after m_pullup? */ seq = le32dec(mc->mc_seq); if (IEEE80211_IS_MULTICAST(wh->i_addr1)) addr = wh->i_addr3; else if (ae == IEEE80211_MESH_AE_01) addr = MC01(mc)->mc_addr4; else addr = ((struct ieee80211_qosframe_addr4 *)wh)->i_addr4; if (IEEE80211_ADDR_EQ(vap->iv_myaddr, addr)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, addr, "data", "%s", "not to me"); vap->iv_stats.is_rx_wrongbss++; /* XXX kinda */ goto out; } if (mesh_checkpseq(vap, addr, seq) != 0) { vap->iv_stats.is_rx_dup++; goto out; } /* This code "routes" the frame to the right control path */ if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { if (IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr3)) error = mesh_recv_indiv_data_to_me(vap, m, wh, mc); else if (IEEE80211_IS_MULTICAST(wh->i_addr3)) error = mesh_recv_group_data(vap, m, wh, mc); else error = mesh_recv_indiv_data_to_fwrd(vap, m, wh, mc); } else error = mesh_recv_group_data(vap, m, wh, mc); if (error < 0) goto err; else if (error > 0) goto out; if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); need_tap = 0; /* * Finally, strip the 802.11 header. */ m = mesh_decap(vap, m, hdrspace, meshdrlen); if (m == NULL) { /* XXX mask bit to check for both */ /* don't count Null data frames as errors */ if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) goto out; IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "decap error"); vap->iv_stats.is_rx_decap++; IEEE80211_NODE_STAT(ni, rx_decap); goto err; } if (qos[0] & IEEE80211_QOS_AMSDU) { m = ieee80211_decap_amsdu(ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; } ieee80211_deliver_data(vap, ni, m); return type; case IEEE80211_FC0_TYPE_MGT: vap->iv_stats.is_rx_mgmt++; IEEE80211_NODE_STAT(ni, rx_mgmt); if (dir != IEEE80211_FC1_DIR_NODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "mgt", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto err; } if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "mgt", "too short: len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } #ifdef IEEE80211_DEBUG if ((ieee80211_msg_debug(vap) && (vap->iv_ic->ic_flags & IEEE80211_F_SCAN)) || ieee80211_msg_dumppkts(vap)) { if_printf(ifp, "received %s from %s rssi %d\n", ieee80211_mgt_subtype_name(subtype), ether_sprintf(wh->i_addr2), rssi); } #endif if (IEEE80211_IS_PROTECTED(wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "WEP set but not permitted"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ goto out; } vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); goto out; case IEEE80211_FC0_TYPE_CTL: vap->iv_stats.is_rx_ctl++; IEEE80211_NODE_STAT(ni, rx_ctrl); goto out; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "bad", "frame type 0x%x", type); /* should not come here */ break; } err: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); out: if (m != NULL) { if (need_tap && ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); m_freem(m); } return type; #undef HAS_SEQ #undef MC01 } static void mesh_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_channel *rxchan = ic->ic_curchan; struct ieee80211_frame *wh; struct ieee80211_mesh_route *rt; uint8_t *frm, *efrm; wh = mtod(m0, struct ieee80211_frame *); frm = (uint8_t *)&wh[1]; efrm = mtod(m0, uint8_t *) + m0->m_len; switch (subtype) { case IEEE80211_FC0_SUBTYPE_PROBE_RESP: case IEEE80211_FC0_SUBTYPE_BEACON: { struct ieee80211_scanparams scan; struct ieee80211_channel *c; /* * We process beacon/probe response * frames to discover neighbors. */ if (rxs != NULL) { c = ieee80211_lookup_channel_rxstatus(vap, rxs); if (c != NULL) rxchan = c; } if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) return; /* * Count frame now that we know it's to be processed. */ if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { vap->iv_stats.is_rx_beacon++; /* XXX remove */ IEEE80211_NODE_STAT(ni, rx_beacons); } else IEEE80211_NODE_STAT(ni, rx_proberesp); /* * If scanning, just pass information to the scan module. */ if (ic->ic_flags & IEEE80211_F_SCAN) { if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { /* * Actively scanning a channel marked passive; * send a probe request now that we know there * is 802.11 traffic present. * * XXX check if the beacon we recv'd gives * us what we need and suppress the probe req */ ieee80211_probe_curchan(vap, true); ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; } ieee80211_add_scan(vap, rxchan, &scan, wh, subtype, rssi, nf); return; } /* The rest of this code assumes we are running */ if (vap->iv_state != IEEE80211_S_RUN) return; /* * Ignore non-mesh STAs. */ if ((scan.capinfo & (IEEE80211_CAPINFO_ESS|IEEE80211_CAPINFO_IBSS)) || scan.meshid == NULL || scan.meshconf == NULL) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "beacon", "%s", "not a mesh sta"); vap->iv_stats.is_mesh_wrongmesh++; return; } /* * Ignore STAs for other mesh networks. */ if (memcmp(scan.meshid+2, ms->ms_id, ms->ms_idlen) != 0 || mesh_verify_meshconf(vap, scan.meshconf)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "beacon", "%s", "not for our mesh"); vap->iv_stats.is_mesh_wrongmesh++; return; } /* * Peer only based on the current ACL policy. */ if (vap->iv_acl != NULL && !vap->iv_acl->iac_check(vap, wh)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL, wh, NULL, "%s", "disallowed by ACL"); vap->iv_stats.is_rx_acl++; return; } /* * Do neighbor discovery. */ if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_macaddr)) { /* * Create a new entry in the neighbor table. */ ni = ieee80211_add_neighbor(vap, wh, &scan); } /* * Automatically peer with discovered nodes if possible. */ if (ni != vap->iv_bss && (ms->ms_flags & IEEE80211_MESHFLAGS_AP)) { switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_IDLE: { uint16_t args[1]; /* Wait for backoff callout to reset counter */ if (ni->ni_mlhcnt >= ieee80211_mesh_maxholding) return; ni->ni_mlpid = mesh_generateid(vap); if (ni->ni_mlpid == 0) return; mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENSNT); args[0] = ni->ni_mlpid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_OPEN, args); ni->ni_mlrcnt = 0; mesh_peer_timeout_setup(ni); break; } case IEEE80211_NODE_MESH_ESTABLISHED: { /* * Valid beacon from a peer mesh STA * bump TA lifetime */ rt = ieee80211_mesh_rt_find(vap, wh->i_addr2); if(rt != NULL) { ieee80211_mesh_rt_update(rt, ticks_to_msecs( ms->ms_ppath->mpp_inact)); } break; } default: break; /* ignore */ } } break; } case IEEE80211_FC0_SUBTYPE_PROBE_REQ: { uint8_t *ssid, *meshid, *rates, *xrates; if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; return; } if (IEEE80211_IS_MULTICAST(wh->i_addr2)) { /* frame must be directed */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not unicast"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX stat */ return; } /* * prreq frame format * [tlv] ssid * [tlv] supported rates * [tlv] extended supported rates * [tlv] mesh id */ ssid = meshid = rates = xrates = NULL; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); switch (*frm) { case IEEE80211_ELEMID_SSID: ssid = frm; break; case IEEE80211_ELEMID_RATES: rates = frm; break; case IEEE80211_ELEMID_XRATES: xrates = frm; break; case IEEE80211_ELEMID_MESHID: meshid = frm; break; } frm += frm[1] + 2; } IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return); IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); if (xrates != NULL) IEEE80211_VERIFY_ELEMENT(xrates, IEEE80211_RATE_MAXSIZE - rates[1], return); if (meshid != NULL) { IEEE80211_VERIFY_ELEMENT(meshid, IEEE80211_MESHID_LEN, return); /* NB: meshid, not ssid */ IEEE80211_VERIFY_SSID(vap->iv_bss, meshid, return); } /* XXX find a better class or define it's own */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2, "%s", "recv probe req"); /* * Some legacy 11b clients cannot hack a complete * probe response frame. When the request includes * only a bare-bones rate set, communicate this to * the transmit side. */ ieee80211_send_proberesp(vap, wh->i_addr2, 0); break; } case IEEE80211_FC0_SUBTYPE_ACTION: case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: if (ni == vap->iv_bss) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "unknown node"); vap->iv_stats.is_rx_mgtdiscard++; } else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not for us"); vap->iv_stats.is_rx_mgtdiscard++; } else if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; } else { if (ieee80211_parse_action(ni, m0) == 0) (void)ic->ic_recv_action(ni, wh, frm, efrm); } break; case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: case IEEE80211_FC0_SUBTYPE_TIMING_ADV: case IEEE80211_FC0_SUBTYPE_ATIM: case IEEE80211_FC0_SUBTYPE_DISASSOC: case IEEE80211_FC0_SUBTYPE_AUTH: case IEEE80211_FC0_SUBTYPE_DEAUTH: IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not handled"); vap->iv_stats.is_rx_mgtdiscard++; break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "mgt", "subtype 0x%x not handled", subtype); vap->iv_stats.is_rx_badsubtype++; break; } } static void mesh_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BAR: ieee80211_recv_bar(ni, m); break; } } /* * Parse meshpeering action ie's for MPM frames */ static const struct ieee80211_meshpeer_ie * mesh_parse_meshpeering_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ const uint8_t *frm, const uint8_t *efrm, struct ieee80211_meshpeer_ie *mp, uint8_t subtype) { struct ieee80211vap *vap = ni->ni_vap; const struct ieee80211_meshpeer_ie *mpie; uint16_t args[3]; const uint8_t *meshid, *meshconf; uint8_t sendclose = 0; /* 1 = MPM frame rejected, close will be sent */ meshid = meshconf = NULL; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return NULL); switch (*frm) { case IEEE80211_ELEMID_MESHID: meshid = frm; break; case IEEE80211_ELEMID_MESHCONF: meshconf = frm; break; case IEEE80211_ELEMID_MESHPEER: mpie = (const struct ieee80211_meshpeer_ie *) frm; memset(mp, 0, sizeof(*mp)); mp->peer_len = mpie->peer_len; mp->peer_proto = le16dec(&mpie->peer_proto); mp->peer_llinkid = le16dec(&mpie->peer_llinkid); switch (subtype) { case IEEE80211_ACTION_MESHPEERING_CONFIRM: mp->peer_linkid = le16dec(&mpie->peer_linkid); break; case IEEE80211_ACTION_MESHPEERING_CLOSE: /* NB: peer link ID is optional */ if (mpie->peer_len == (IEEE80211_MPM_BASE_SZ + 2)) { mp->peer_linkid = 0; mp->peer_rcode = le16dec(&mpie->peer_linkid); } else { mp->peer_linkid = le16dec(&mpie->peer_linkid); mp->peer_rcode = le16dec(&mpie->peer_rcode); } break; } break; } frm += frm[1] + 2; } /* * Verify the contents of the frame. * If it fails validation, close the peer link. */ if (mesh_verify_meshpeer(vap, subtype, (const uint8_t *)mp)) { sendclose = 1; IEEE80211_DISCARD(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, wh, NULL, "%s", "MPM validation failed"); } /* If meshid is not the same reject any frames type. */ if (sendclose == 0 && mesh_verify_meshid(vap, meshid)) { sendclose = 1; IEEE80211_DISCARD(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, wh, NULL, "%s", "not for our mesh"); if (subtype == IEEE80211_ACTION_MESHPEERING_CLOSE) { /* * Standard not clear about this, if we dont ignore * there will be an endless loop between nodes sending * CLOSE frames between each other with wrong meshid. * Discard and timers will bring FSM to IDLE state. */ return NULL; } } /* * Close frames are accepted if meshid is the same. * Verify the other two types. */ if (sendclose == 0 && subtype != IEEE80211_ACTION_MESHPEERING_CLOSE && mesh_verify_meshconf(vap, meshconf)) { sendclose = 1; IEEE80211_DISCARD(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, wh, NULL, "%s", "configuration mismatch"); } if (sendclose) { vap->iv_stats.is_rx_mgtdiscard++; switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_IDLE: case IEEE80211_NODE_MESH_ESTABLISHED: case IEEE80211_NODE_MESH_HOLDING: /* ignore */ break; case IEEE80211_NODE_MESH_OPENSNT: case IEEE80211_NODE_MESH_OPENRCV: case IEEE80211_NODE_MESH_CONFIRMRCV: args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; /* Reason codes for rejection */ switch (subtype) { case IEEE80211_ACTION_MESHPEERING_OPEN: args[2] = IEEE80211_REASON_MESH_CPVIOLATION; break; case IEEE80211_ACTION_MESHPEERING_CONFIRM: args[2] = IEEE80211_REASON_MESH_INCONS_PARAMS; break; } ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; } return NULL; } return (const struct ieee80211_meshpeer_ie *) mp; } static int mesh_recv_action_meshpeering_open(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_meshpeer_ie ie; const struct ieee80211_meshpeer_ie *meshpeer; uint16_t args[3]; /* +2+2 for action + code + capabilites */ meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2, efrm, &ie, IEEE80211_ACTION_MESHPEERING_OPEN); if (meshpeer == NULL) { return 0; } /* XXX move up */ IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "recv PEER OPEN, lid 0x%x", meshpeer->peer_llinkid); switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_IDLE: /* Reject open request if reached our maximum neighbor count */ if (ms->ms_neighbors >= IEEE80211_MESH_MAX_NEIGHBORS) { args[0] = meshpeer->peer_llinkid; args[1] = 0; args[2] = IEEE80211_REASON_MESH_MAX_PEERS; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); /* stay in IDLE state */ return (0); } /* Open frame accepted */ mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); ni->ni_mllid = meshpeer->peer_llinkid; ni->ni_mlpid = mesh_generateid(vap); if (ni->ni_mlpid == 0) return 0; /* XXX */ args[0] = ni->ni_mlpid; /* Announce we're open too... */ ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_OPEN, args); /* ...and confirm the link. */ args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, args); mesh_peer_timeout_setup(ni); break; case IEEE80211_NODE_MESH_OPENRCV: /* Wrong Link ID */ if (ni->ni_mllid != meshpeer->peer_llinkid) { args[0] = ni->ni_mllid; args[1] = ni->ni_mlpid; args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; } /* Duplicate open, confirm again. */ args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, args); break; case IEEE80211_NODE_MESH_OPENSNT: ni->ni_mllid = meshpeer->peer_llinkid; mesh_linkchange(ni, IEEE80211_NODE_MESH_OPENRCV); args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, args); /* NB: don't setup/clear any timeout */ break; case IEEE80211_NODE_MESH_CONFIRMRCV: if (ni->ni_mlpid != meshpeer->peer_linkid || ni->ni_mllid != meshpeer->peer_llinkid) { args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; } mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); ni->ni_mllid = meshpeer->peer_llinkid; args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, args); mesh_peer_timeout_stop(ni); break; case IEEE80211_NODE_MESH_ESTABLISHED: if (ni->ni_mllid != meshpeer->peer_llinkid) { args[0] = ni->ni_mllid; args[1] = ni->ni_mlpid; args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; } args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CONFIRM, args); break; case IEEE80211_NODE_MESH_HOLDING: args[0] = ni->ni_mlpid; args[1] = meshpeer->peer_llinkid; /* Standard not clear about what the reaason code should be */ args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); break; } return 0; } static int mesh_recv_action_meshpeering_confirm(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_meshpeer_ie ie; const struct ieee80211_meshpeer_ie *meshpeer; uint16_t args[3]; /* +2+2+2+2 for action + code + capabilites + status code + AID */ meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2+2+2+2, efrm, &ie, IEEE80211_ACTION_MESHPEERING_CONFIRM); if (meshpeer == NULL) { return 0; } IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "recv PEER CONFIRM, local id 0x%x, peer id 0x%x", meshpeer->peer_llinkid, meshpeer->peer_linkid); switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_OPENRCV: mesh_linkchange(ni, IEEE80211_NODE_MESH_ESTABLISHED); mesh_peer_timeout_stop(ni); break; case IEEE80211_NODE_MESH_OPENSNT: mesh_linkchange(ni, IEEE80211_NODE_MESH_CONFIRMRCV); mesh_peer_timeout_setup(ni); break; case IEEE80211_NODE_MESH_HOLDING: args[0] = ni->ni_mlpid; args[1] = meshpeer->peer_llinkid; /* Standard not clear about what the reaason code should be */ args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); break; case IEEE80211_NODE_MESH_CONFIRMRCV: if (ni->ni_mllid != meshpeer->peer_llinkid) { args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; args[2] = IEEE80211_REASON_PEER_LINK_CANCELED; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); } break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, wh, NULL, "received confirm in invalid state %d", ni->ni_mlstate); vap->iv_stats.is_rx_mgtdiscard++; break; } return 0; } static int mesh_recv_action_meshpeering_close(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211_meshpeer_ie ie; const struct ieee80211_meshpeer_ie *meshpeer; uint16_t args[3]; /* +2 for action + code */ meshpeer = mesh_parse_meshpeering_action(ni, wh, frm+2, efrm, &ie, IEEE80211_ACTION_MESHPEERING_CLOSE); if (meshpeer == NULL) { return 0; } /* * XXX: check reason code, for example we could receive * IEEE80211_REASON_MESH_MAX_PEERS then we should not attempt * to peer again. */ IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "%s", "recv PEER CLOSE"); switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_IDLE: /* ignore */ break; case IEEE80211_NODE_MESH_OPENRCV: case IEEE80211_NODE_MESH_OPENSNT: case IEEE80211_NODE_MESH_CONFIRMRCV: case IEEE80211_NODE_MESH_ESTABLISHED: args[0] = ni->ni_mlpid; args[1] = ni->ni_mllid; args[2] = IEEE80211_REASON_MESH_CLOSE_RCVD; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; case IEEE80211_NODE_MESH_HOLDING: mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); mesh_peer_timeout_stop(ni); break; } return 0; } /* * Link Metric handling. */ static int mesh_recv_action_meshlmetric(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { const struct ieee80211_meshlmetric_ie *ie = (const struct ieee80211_meshlmetric_ie *) (frm+2); /* action + code */ struct ieee80211_meshlmetric_ie lm_rep; if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { lm_rep.lm_flags = 0; lm_rep.lm_metric = mesh_airtime_calc(ni); ieee80211_send_action(ni, IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_LMETRIC, &lm_rep); } /* XXX: else do nothing for now */ return 0; } /* * Parse meshgate action ie's for GANN frames. * Returns -1 if parsing fails, otherwise 0. */ static int mesh_parse_meshgate_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh, /* XXX for VERIFY_LENGTH */ struct ieee80211_meshgann_ie *ie, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211vap *vap = ni->ni_vap; const struct ieee80211_meshgann_ie *gannie; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return -1); switch (*frm) { case IEEE80211_ELEMID_MESHGANN: gannie = (const struct ieee80211_meshgann_ie *) frm; memset(ie, 0, sizeof(*ie)); ie->gann_ie = gannie->gann_ie; ie->gann_len = gannie->gann_len; ie->gann_flags = gannie->gann_flags; ie->gann_hopcount = gannie->gann_hopcount; ie->gann_ttl = gannie->gann_ttl; IEEE80211_ADDR_COPY(ie->gann_addr, gannie->gann_addr); ie->gann_seq = le32dec(&gannie->gann_seq); ie->gann_interval = le16dec(&gannie->gann_interval); break; } frm += frm[1] + 2; } return 0; } /* * Mesh Gate Announcement handling. */ static int mesh_recv_action_meshgate(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct ieee80211_mesh_gate_route *gr, *next; struct ieee80211_mesh_route *rt_gate; struct ieee80211_meshgann_ie pgann; struct ieee80211_meshgann_ie ie; int found = 0; /* +2 for action + code */ if (mesh_parse_meshgate_action(ni, wh, &ie, frm+2, efrm) != 0) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, NULL, "%s", "GANN parsing failed"); vap->iv_stats.is_rx_mgtdiscard++; return (0); } if (IEEE80211_ADDR_EQ(vap->iv_myaddr, ie.gann_addr)) return 0; IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, "received GANN, meshgate: %6D (seq %u)", ie.gann_addr, ":", ie.gann_seq); if (ms == NULL) return (0); MESH_RT_LOCK(ms); TAILQ_FOREACH_SAFE(gr, &ms->ms_known_gates, gr_next, next) { if (!IEEE80211_ADDR_EQ(gr->gr_addr, ie.gann_addr)) continue; if (ie.gann_seq <= gr->gr_lastseq) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH, ni->ni_macaddr, NULL, "GANN old seqno %u <= %u", ie.gann_seq, gr->gr_lastseq); MESH_RT_UNLOCK(ms); return (0); } /* corresponding mesh gate found & GANN accepted */ found = 1; break; } if (found == 0) { /* this GANN is from a new mesh Gate add it to known table. */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ie.gann_addr, "stored new GANN information, seq %u.", ie.gann_seq); gr = IEEE80211_MALLOC(ALIGN(sizeof(struct ieee80211_mesh_gate_route)), M_80211_MESH_GT_RT, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); IEEE80211_ADDR_COPY(gr->gr_addr, ie.gann_addr); TAILQ_INSERT_TAIL(&ms->ms_known_gates, gr, gr_next); } gr->gr_lastseq = ie.gann_seq; /* check if we have a path to this gate */ rt_gate = mesh_rt_find_locked(ms, gr->gr_addr); if (rt_gate != NULL && rt_gate->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) { gr->gr_route = rt_gate; rt_gate->rt_flags |= IEEE80211_MESHRT_FLAGS_GATE; } MESH_RT_UNLOCK(ms); /* popagate only if decremented ttl >= 1 && forwarding is enabled */ if ((ie.gann_ttl - 1) < 1 && !(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) return 0; pgann.gann_flags = ie.gann_flags; /* Reserved */ pgann.gann_hopcount = ie.gann_hopcount + 1; pgann.gann_ttl = ie.gann_ttl - 1; IEEE80211_ADDR_COPY(pgann.gann_addr, ie.gann_addr); pgann.gann_seq = ie.gann_seq; pgann.gann_interval = ie.gann_interval; IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_MESH, ie.gann_addr, "%s", "propagate GANN"); ieee80211_send_action(vap->iv_bss, IEEE80211_ACTION_CAT_MESH, IEEE80211_ACTION_MESH_GANN, &pgann); return 0; } static int mesh_send_action(struct ieee80211_node *ni, const uint8_t sa[IEEE80211_ADDR_LEN], const uint8_t da[IEEE80211_ADDR_LEN], struct mbuf *m) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_bpf_params params; int ret; KASSERT(ni != NULL, ("null node")); if (vap->iv_state == IEEE80211_S_CAC) { IEEE80211_NOTE(vap, IEEE80211_MSG_OUTPUT, ni, "block %s frame in CAC state", "Mesh action"); vap->iv_stats.is_tx_badstate++; ieee80211_free_node(ni); m_freem(m); return EIO; /* XXX */ } M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT); if (m == NULL) { ieee80211_free_node(ni); return ENOMEM; } IEEE80211_TX_LOCK(ic); ieee80211_send_setup(ni, m, IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_ACTION, IEEE80211_NONQOS_TID, sa, da, sa); m->m_flags |= M_ENCAP; /* mark encapsulated */ memset(¶ms, 0, sizeof(params)); params.ibp_pri = WME_AC_VO; params.ibp_rate0 = ni->ni_txparms->mgmtrate; if (IEEE80211_IS_MULTICAST(da)) params.ibp_try0 = 1; else params.ibp_try0 = ni->ni_txparms->maxretry; params.ibp_power = ni->ni_txpower; IEEE80211_NODE_STAT(ni, tx_mgmt); ret = ieee80211_raw_output(vap, ni, m, ¶ms); IEEE80211_TX_UNLOCK(ic); return (ret); } #define ADDSHORT(frm, v) do { \ frm[0] = (v) & 0xff; \ frm[1] = (v) >> 8; \ frm += 2; \ } while (0) #define ADDWORD(frm, v) do { \ frm[0] = (v) & 0xff; \ frm[1] = ((v) >> 8) & 0xff; \ frm[2] = ((v) >> 16) & 0xff; \ frm[3] = ((v) >> 24) & 0xff; \ frm += 4; \ } while (0) static int mesh_send_action_meshpeering_open(struct ieee80211_node *ni, int category, int action, void *args0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; uint16_t *args = args0; const struct ieee80211_rateset *rs; struct mbuf *m; uint8_t *frm; IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "send PEER OPEN action: localid 0x%x", args[0]); IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); ieee80211_ref_node(ni); m = ieee80211_getmgtframe(&frm, ic->ic_headroom + sizeof(struct ieee80211_frame), sizeof(uint16_t) /* action+category */ + sizeof(uint16_t) /* capabilites */ + 2 + IEEE80211_RATE_SIZE + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) + 2 + IEEE80211_MESHID_LEN + sizeof(struct ieee80211_meshconf_ie) + sizeof(struct ieee80211_meshpeer_ie) ); if (m != NULL) { /* * mesh peer open action frame format: * [1] category * [1] action * [2] capabilities * [tlv] rates * [tlv] xrates * [tlv] mesh id * [tlv] mesh conf * [tlv] mesh peer link mgmt */ *frm++ = category; *frm++ = action; ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); rs = ieee80211_get_suprates(ic, ic->ic_curchan); frm = ieee80211_add_rates(frm, rs); frm = ieee80211_add_xrates(frm, rs); frm = ieee80211_add_meshid(frm, vap); frm = ieee80211_add_meshconf(frm, vap); frm = ieee80211_add_meshpeer(frm, IEEE80211_ACTION_MESHPEERING_OPEN, args[0], 0, 0); m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); } else { vap->iv_stats.is_tx_nobuf++; ieee80211_free_node(ni); return ENOMEM; } } static int mesh_send_action_meshpeering_confirm(struct ieee80211_node *ni, int category, int action, void *args0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; uint16_t *args = args0; const struct ieee80211_rateset *rs; struct mbuf *m; uint8_t *frm; IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "send PEER CONFIRM action: localid 0x%x, peerid 0x%x", args[0], args[1]); IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); ieee80211_ref_node(ni); m = ieee80211_getmgtframe(&frm, ic->ic_headroom + sizeof(struct ieee80211_frame), sizeof(uint16_t) /* action+category */ + sizeof(uint16_t) /* capabilites */ + sizeof(uint16_t) /* status code */ + sizeof(uint16_t) /* AID */ + 2 + IEEE80211_RATE_SIZE + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) + 2 + IEEE80211_MESHID_LEN + sizeof(struct ieee80211_meshconf_ie) + sizeof(struct ieee80211_meshpeer_ie) ); if (m != NULL) { /* * mesh peer confirm action frame format: * [1] category * [1] action * [2] capabilities * [2] status code * [2] association id (peer ID) * [tlv] rates * [tlv] xrates * [tlv] mesh id * [tlv] mesh conf * [tlv] mesh peer link mgmt */ *frm++ = category; *frm++ = action; ADDSHORT(frm, ieee80211_getcapinfo(vap, ni->ni_chan)); ADDSHORT(frm, 0); /* status code */ ADDSHORT(frm, args[1]); /* AID */ rs = ieee80211_get_suprates(ic, ic->ic_curchan); frm = ieee80211_add_rates(frm, rs); frm = ieee80211_add_xrates(frm, rs); frm = ieee80211_add_meshid(frm, vap); frm = ieee80211_add_meshconf(frm, vap); frm = ieee80211_add_meshpeer(frm, IEEE80211_ACTION_MESHPEERING_CONFIRM, args[0], args[1], 0); m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); } else { vap->iv_stats.is_tx_nobuf++; ieee80211_free_node(ni); return ENOMEM; } } static int mesh_send_action_meshpeering_close(struct ieee80211_node *ni, int category, int action, void *args0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; uint16_t *args = args0; struct mbuf *m; uint8_t *frm; IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "send PEER CLOSE action: localid 0x%x, peerid 0x%x reason %d (%s)", args[0], args[1], args[2], ieee80211_reason_to_string(args[2])); IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); ieee80211_ref_node(ni); m = ieee80211_getmgtframe(&frm, ic->ic_headroom + sizeof(struct ieee80211_frame), sizeof(uint16_t) /* action+category */ + sizeof(uint16_t) /* reason code */ + 2 + IEEE80211_MESHID_LEN + sizeof(struct ieee80211_meshpeer_ie) ); if (m != NULL) { /* * mesh peer close action frame format: * [1] category * [1] action * [tlv] mesh id * [tlv] mesh peer link mgmt */ *frm++ = category; *frm++ = action; frm = ieee80211_add_meshid(frm, vap); frm = ieee80211_add_meshpeer(frm, IEEE80211_ACTION_MESHPEERING_CLOSE, args[0], args[1], args[2]); m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); } else { vap->iv_stats.is_tx_nobuf++; ieee80211_free_node(ni); return ENOMEM; } } static int mesh_send_action_meshlmetric(struct ieee80211_node *ni, int category, int action, void *arg0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_meshlmetric_ie *ie = arg0; struct mbuf *m; uint8_t *frm; if (ie->lm_flags & IEEE80211_MESH_LMETRIC_FLAGS_REQ) { IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "%s", "send LINK METRIC REQUEST action"); } else { IEEE80211_NOTE(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, ni, "send LINK METRIC REPLY action: metric 0x%x", ie->lm_metric); } IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); ieee80211_ref_node(ni); m = ieee80211_getmgtframe(&frm, ic->ic_headroom + sizeof(struct ieee80211_frame), sizeof(uint16_t) + /* action+category */ sizeof(struct ieee80211_meshlmetric_ie) ); if (m != NULL) { /* * mesh link metric * [1] category * [1] action * [tlv] mesh link metric */ *frm++ = category; *frm++ = action; frm = ieee80211_add_meshlmetric(frm, ie->lm_flags, ie->lm_metric); m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); return mesh_send_action(ni, vap->iv_myaddr, ni->ni_macaddr, m); } else { vap->iv_stats.is_tx_nobuf++; ieee80211_free_node(ni); return ENOMEM; } } static int mesh_send_action_meshgate(struct ieee80211_node *ni, int category, int action, void *arg0) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_meshgann_ie *ie = arg0; struct mbuf *m; uint8_t *frm; IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "ieee80211_ref_node (%s:%u) %p<%s> refcnt %d\n", __func__, __LINE__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); ieee80211_ref_node(ni); m = ieee80211_getmgtframe(&frm, ic->ic_headroom + sizeof(struct ieee80211_frame), sizeof(uint16_t) + /* action+category */ IEEE80211_MESHGANN_BASE_SZ ); if (m != NULL) { /* * mesh link metric * [1] category * [1] action * [tlv] mesh gate announcement */ *frm++ = category; *frm++ = action; frm = ieee80211_add_meshgate(frm, ie); m->m_pkthdr.len = m->m_len = frm - mtod(m, uint8_t *); return mesh_send_action(ni, vap->iv_myaddr, broadcastaddr, m); } else { vap->iv_stats.is_tx_nobuf++; ieee80211_free_node(ni); return ENOMEM; } } static void mesh_peer_timeout_setup(struct ieee80211_node *ni) { switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_HOLDING: ni->ni_mltval = ieee80211_mesh_holdingtimeout; break; case IEEE80211_NODE_MESH_CONFIRMRCV: ni->ni_mltval = ieee80211_mesh_confirmtimeout; break; case IEEE80211_NODE_MESH_IDLE: ni->ni_mltval = 0; break; default: ni->ni_mltval = ieee80211_mesh_retrytimeout; break; } if (ni->ni_mltval) callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, ni); } /* * Same as above but backoffs timer statisically 50%. */ static void mesh_peer_timeout_backoff(struct ieee80211_node *ni) { uint32_t r; r = arc4random(); ni->ni_mltval += r % ni->ni_mltval; callout_reset(&ni->ni_mltimer, ni->ni_mltval, mesh_peer_timeout_cb, ni); } static __inline void mesh_peer_timeout_stop(struct ieee80211_node *ni) { callout_drain(&ni->ni_mltimer); } static void mesh_peer_backoff_cb(void *arg) { struct ieee80211_node *ni = (struct ieee80211_node *)arg; /* After backoff timeout, try to peer automatically again. */ ni->ni_mlhcnt = 0; } /* * Mesh Peer Link Management FSM timeout handling. */ static void mesh_peer_timeout_cb(void *arg) { struct ieee80211_node *ni = (struct ieee80211_node *)arg; uint16_t args[3]; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_MESH, ni, "mesh link timeout, state %d, retry counter %d", ni->ni_mlstate, ni->ni_mlrcnt); switch (ni->ni_mlstate) { case IEEE80211_NODE_MESH_IDLE: case IEEE80211_NODE_MESH_ESTABLISHED: break; case IEEE80211_NODE_MESH_OPENSNT: case IEEE80211_NODE_MESH_OPENRCV: if (ni->ni_mlrcnt == ieee80211_mesh_maxretries) { args[0] = ni->ni_mlpid; args[2] = IEEE80211_REASON_MESH_MAX_RETRIES; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); ni->ni_mlrcnt = 0; mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); } else { args[0] = ni->ni_mlpid; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_OPEN, args); ni->ni_mlrcnt++; mesh_peer_timeout_backoff(ni); } break; case IEEE80211_NODE_MESH_CONFIRMRCV: args[0] = ni->ni_mlpid; args[2] = IEEE80211_REASON_MESH_CONFIRM_TIMEOUT; ieee80211_send_action(ni, IEEE80211_ACTION_CAT_SELF_PROT, IEEE80211_ACTION_MESHPEERING_CLOSE, args); mesh_linkchange(ni, IEEE80211_NODE_MESH_HOLDING); mesh_peer_timeout_setup(ni); break; case IEEE80211_NODE_MESH_HOLDING: ni->ni_mlhcnt++; if (ni->ni_mlhcnt >= ieee80211_mesh_maxholding) callout_reset(&ni->ni_mlhtimer, ieee80211_mesh_backofftimeout, mesh_peer_backoff_cb, ni); mesh_linkchange(ni, IEEE80211_NODE_MESH_IDLE); break; } } static int mesh_verify_meshid(struct ieee80211vap *vap, const uint8_t *ie) { struct ieee80211_mesh_state *ms = vap->iv_mesh; if (ie == NULL || ie[1] != ms->ms_idlen) return 1; return memcmp(ms->ms_id, ie + 2, ms->ms_idlen); } /* * Check if we are using the same algorithms for this mesh. */ static int mesh_verify_meshconf(struct ieee80211vap *vap, const uint8_t *ie) { const struct ieee80211_meshconf_ie *meshconf = (const struct ieee80211_meshconf_ie *) ie; const struct ieee80211_mesh_state *ms = vap->iv_mesh; if (meshconf == NULL) return 1; if (meshconf->conf_pselid != ms->ms_ppath->mpp_ie) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "unknown path selection algorithm: 0x%x\n", meshconf->conf_pselid); return 1; } if (meshconf->conf_pmetid != ms->ms_pmetric->mpm_ie) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "unknown path metric algorithm: 0x%x\n", meshconf->conf_pmetid); return 1; } if (meshconf->conf_ccid != 0) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "unknown congestion control algorithm: 0x%x\n", meshconf->conf_ccid); return 1; } if (meshconf->conf_syncid != IEEE80211_MESHCONF_SYNC_NEIGHOFF) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "unknown sync algorithm: 0x%x\n", meshconf->conf_syncid); return 1; } if (meshconf->conf_authid != 0) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "unknown auth auth algorithm: 0x%x\n", meshconf->conf_pselid); return 1; } /* Not accepting peers */ if (!(meshconf->conf_cap & IEEE80211_MESHCONF_CAP_AP)) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_MESH, "not accepting peers: 0x%x\n", meshconf->conf_cap); return 1; } return 0; } static int mesh_verify_meshpeer(struct ieee80211vap *vap, uint8_t subtype, const uint8_t *ie) { const struct ieee80211_meshpeer_ie *meshpeer = (const struct ieee80211_meshpeer_ie *) ie; if (meshpeer == NULL || meshpeer->peer_len < IEEE80211_MPM_BASE_SZ || meshpeer->peer_len > IEEE80211_MPM_MAX_SZ) return 1; if (meshpeer->peer_proto != IEEE80211_MPPID_MPM) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_ACTION | IEEE80211_MSG_MESH, "Only MPM protocol is supported (proto: 0x%02X)", meshpeer->peer_proto); return 1; } switch (subtype) { case IEEE80211_ACTION_MESHPEERING_OPEN: if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ) return 1; break; case IEEE80211_ACTION_MESHPEERING_CONFIRM: if (meshpeer->peer_len != IEEE80211_MPM_BASE_SZ + 2) return 1; break; case IEEE80211_ACTION_MESHPEERING_CLOSE: if (meshpeer->peer_len < IEEE80211_MPM_BASE_SZ + 2) return 1; if (meshpeer->peer_len == (IEEE80211_MPM_BASE_SZ + 2) && meshpeer->peer_linkid != 0) return 1; if (meshpeer->peer_rcode == 0) return 1; break; } return 0; } /* * Add a Mesh ID IE to a frame. */ uint8_t * ieee80211_add_meshid(uint8_t *frm, struct ieee80211vap *vap) { struct ieee80211_mesh_state *ms = vap->iv_mesh; KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a mbss vap")); *frm++ = IEEE80211_ELEMID_MESHID; *frm++ = ms->ms_idlen; memcpy(frm, ms->ms_id, ms->ms_idlen); return frm + ms->ms_idlen; } /* * Add a Mesh Configuration IE to a frame. * For now just use HWMP routing, Airtime link metric, Null Congestion * Signaling, Null Sync Protocol and Null Authentication. */ uint8_t * ieee80211_add_meshconf(uint8_t *frm, struct ieee80211vap *vap) { const struct ieee80211_mesh_state *ms = vap->iv_mesh; uint16_t caps; KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); *frm++ = IEEE80211_ELEMID_MESHCONF; *frm++ = IEEE80211_MESH_CONF_SZ; *frm++ = ms->ms_ppath->mpp_ie; /* path selection */ *frm++ = ms->ms_pmetric->mpm_ie; /* link metric */ *frm++ = IEEE80211_MESHCONF_CC_DISABLED; *frm++ = IEEE80211_MESHCONF_SYNC_NEIGHOFF; *frm++ = IEEE80211_MESHCONF_AUTH_DISABLED; /* NB: set the number of neighbors before the rest */ *frm = (ms->ms_neighbors > IEEE80211_MESH_MAX_NEIGHBORS ? IEEE80211_MESH_MAX_NEIGHBORS : ms->ms_neighbors) << 1; if (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) *frm |= IEEE80211_MESHCONF_FORM_GATE; frm += 1; caps = 0; if (ms->ms_flags & IEEE80211_MESHFLAGS_AP) caps |= IEEE80211_MESHCONF_CAP_AP; if (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) caps |= IEEE80211_MESHCONF_CAP_FWRD; *frm++ = caps; return frm; } /* * Add a Mesh Peer Management IE to a frame. */ uint8_t * ieee80211_add_meshpeer(uint8_t *frm, uint8_t subtype, uint16_t localid, uint16_t peerid, uint16_t reason) { KASSERT(localid != 0, ("localid == 0")); *frm++ = IEEE80211_ELEMID_MESHPEER; switch (subtype) { case IEEE80211_ACTION_MESHPEERING_OPEN: *frm++ = IEEE80211_MPM_BASE_SZ; /* length */ ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ ADDSHORT(frm, localid); /* local ID */ break; case IEEE80211_ACTION_MESHPEERING_CONFIRM: KASSERT(peerid != 0, ("sending peer confirm without peer id")); *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ ADDSHORT(frm, localid); /* local ID */ ADDSHORT(frm, peerid); /* peer ID */ break; case IEEE80211_ACTION_MESHPEERING_CLOSE: if (peerid) *frm++ = IEEE80211_MPM_MAX_SZ; /* length */ else *frm++ = IEEE80211_MPM_BASE_SZ + 2; /* length */ ADDSHORT(frm, IEEE80211_MPPID_MPM); /* proto */ ADDSHORT(frm, localid); /* local ID */ if (peerid) ADDSHORT(frm, peerid); /* peer ID */ ADDSHORT(frm, reason); break; } return frm; } /* * Compute an Airtime Link Metric for the link with this node. * * Based on Draft 3.0 spec (11B.10, p.149). */ /* * Max 802.11s overhead. */ #define IEEE80211_MESH_MAXOVERHEAD \ (sizeof(struct ieee80211_qosframe_addr4) \ + sizeof(struct ieee80211_meshcntl_ae10) \ + sizeof(struct llc) \ + IEEE80211_ADDR_LEN \ + IEEE80211_WEP_IVLEN \ + IEEE80211_WEP_KIDLEN \ + IEEE80211_WEP_CRCLEN \ + IEEE80211_WEP_MICLEN \ + IEEE80211_CRC_LEN) uint32_t mesh_airtime_calc(struct ieee80211_node *ni) { #define M_BITS 8 #define S_FACTOR (2 * M_BITS) struct ieee80211com *ic = ni->ni_ic; struct ifnet *ifp = ni->ni_vap->iv_ifp; const static int nbits = 8192 << M_BITS; uint32_t overhead, rate, errrate; uint64_t res; /* Time to transmit a frame */ - rate = ni->ni_txrate; + rate = ieee80211_node_get_txrate_dot11rate(ni); overhead = ieee80211_compute_duration(ic->ic_rt, ifp->if_mtu + IEEE80211_MESH_MAXOVERHEAD, rate, 0) << M_BITS; /* Error rate in percentage */ /* XXX assuming small failures are ok */ errrate = (((ifp->if_get_counter(ifp, IFCOUNTER_OERRORS) + ifp->if_get_counter(ifp, IFCOUNTER_IERRORS)) / 100) << M_BITS) / 100; res = (overhead + (nbits / rate)) * ((1 << S_FACTOR) / ((1 << M_BITS) - errrate)); return (uint32_t)(res >> S_FACTOR); #undef M_BITS #undef S_FACTOR } /* * Add a Mesh Link Metric report IE to a frame. */ uint8_t * ieee80211_add_meshlmetric(uint8_t *frm, uint8_t flags, uint32_t metric) { *frm++ = IEEE80211_ELEMID_MESHLINK; *frm++ = 5; *frm++ = flags; ADDWORD(frm, metric); return frm; } /* * Add a Mesh Gate Announcement IE to a frame. */ uint8_t * ieee80211_add_meshgate(uint8_t *frm, struct ieee80211_meshgann_ie *ie) { *frm++ = IEEE80211_ELEMID_MESHGANN; /* ie */ *frm++ = IEEE80211_MESHGANN_BASE_SZ; /* len */ *frm++ = ie->gann_flags; *frm++ = ie->gann_hopcount; *frm++ = ie->gann_ttl; IEEE80211_ADDR_COPY(frm, ie->gann_addr); frm += 6; ADDWORD(frm, ie->gann_seq); ADDSHORT(frm, ie->gann_interval); return frm; } #undef ADDSHORT #undef ADDWORD /* * Initialize any mesh-specific node state. */ void ieee80211_mesh_node_init(struct ieee80211vap *vap, struct ieee80211_node *ni) { ni->ni_flags |= IEEE80211_NODE_QOS; callout_init(&ni->ni_mltimer, 1); callout_init(&ni->ni_mlhtimer, 1); } /* * Cleanup any mesh-specific node state. */ void ieee80211_mesh_node_cleanup(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_mesh_state *ms = vap->iv_mesh; callout_drain(&ni->ni_mltimer); callout_drain(&ni->ni_mlhtimer); /* NB: short-circuit callbacks after mesh_vdetach */ if (vap->iv_mesh != NULL) ms->ms_ppath->mpp_peerdown(ni); } void ieee80211_parse_meshid(struct ieee80211_node *ni, const uint8_t *ie) { ni->ni_meshidlen = ie[1]; memcpy(ni->ni_meshid, ie + 2, ie[1]); } /* * Setup mesh-specific node state on neighbor discovery. */ void ieee80211_mesh_init_neighbor(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const struct ieee80211_scanparams *sp) { ieee80211_parse_meshid(ni, sp->meshid); } void ieee80211_mesh_update_beacon(struct ieee80211vap *vap, struct ieee80211_beacon_offsets *bo) { KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("not a MBSS vap")); if (isset(bo->bo_flags, IEEE80211_BEACON_MESHCONF)) { (void)ieee80211_add_meshconf(bo->bo_meshconf, vap); clrbit(bo->bo_flags, IEEE80211_BEACON_MESHCONF); } } static int mesh_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_mesh_state *ms = vap->iv_mesh; uint8_t tmpmeshid[IEEE80211_NWID_LEN]; struct ieee80211_mesh_route *rt; struct ieee80211req_mesh_route *imr; size_t len, off; uint8_t *p; int error; if (vap->iv_opmode != IEEE80211_M_MBSS) return ENOSYS; error = 0; switch (ireq->i_type) { case IEEE80211_IOC_MESH_ID: ireq->i_len = ms->ms_idlen; memcpy(tmpmeshid, ms->ms_id, ireq->i_len); error = copyout(tmpmeshid, ireq->i_data, ireq->i_len); break; case IEEE80211_IOC_MESH_AP: ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_AP) != 0; break; case IEEE80211_IOC_MESH_FWRD: ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_FWD) != 0; break; case IEEE80211_IOC_MESH_GATE: ireq->i_val = (ms->ms_flags & IEEE80211_MESHFLAGS_GATE) != 0; break; case IEEE80211_IOC_MESH_TTL: ireq->i_val = ms->ms_ttl; break; case IEEE80211_IOC_MESH_RTCMD: switch (ireq->i_val) { case IEEE80211_MESH_RTCMD_LIST: len = 0; MESH_RT_LOCK(ms); TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { len += sizeof(*imr); } MESH_RT_UNLOCK(ms); if (len > ireq->i_len || ireq->i_len < sizeof(*imr)) { ireq->i_len = len; return ENOMEM; } ireq->i_len = len; /* XXX M_WAIT? */ p = IEEE80211_MALLOC(len, M_TEMP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (p == NULL) return ENOMEM; off = 0; MESH_RT_LOCK(ms); TAILQ_FOREACH(rt, &ms->ms_routes, rt_next) { if (off >= len) break; imr = (struct ieee80211req_mesh_route *) (p + off); IEEE80211_ADDR_COPY(imr->imr_dest, rt->rt_dest); IEEE80211_ADDR_COPY(imr->imr_nexthop, rt->rt_nexthop); imr->imr_metric = rt->rt_metric; imr->imr_nhops = rt->rt_nhops; imr->imr_lifetime = ieee80211_mesh_rt_update(rt, 0); imr->imr_lastmseq = rt->rt_lastmseq; imr->imr_flags = rt->rt_flags; /* last */ off += sizeof(*imr); } MESH_RT_UNLOCK(ms); error = copyout(p, (uint8_t *)ireq->i_data, ireq->i_len); IEEE80211_FREE(p, M_TEMP); break; case IEEE80211_MESH_RTCMD_FLUSH: case IEEE80211_MESH_RTCMD_ADD: case IEEE80211_MESH_RTCMD_DELETE: return EINVAL; default: return ENOSYS; } break; case IEEE80211_IOC_MESH_PR_METRIC: len = strlen(ms->ms_pmetric->mpm_descr); if (ireq->i_len < len) return EINVAL; ireq->i_len = len; error = copyout(ms->ms_pmetric->mpm_descr, (uint8_t *)ireq->i_data, len); break; case IEEE80211_IOC_MESH_PR_PATH: len = strlen(ms->ms_ppath->mpp_descr); if (ireq->i_len < len) return EINVAL; ireq->i_len = len; error = copyout(ms->ms_ppath->mpp_descr, (uint8_t *)ireq->i_data, len); break; default: return ENOSYS; } return error; } IEEE80211_IOCTL_GET(mesh, mesh_ioctl_get80211); static int mesh_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) { struct ieee80211_mesh_state *ms = vap->iv_mesh; uint8_t tmpmeshid[IEEE80211_NWID_LEN]; uint8_t tmpaddr[IEEE80211_ADDR_LEN]; char tmpproto[IEEE80211_MESH_PROTO_DSZ]; int error; if (vap->iv_opmode != IEEE80211_M_MBSS) return ENOSYS; error = 0; switch (ireq->i_type) { case IEEE80211_IOC_MESH_ID: if (ireq->i_val != 0 || ireq->i_len > IEEE80211_MESHID_LEN) return EINVAL; error = copyin(ireq->i_data, tmpmeshid, ireq->i_len); if (error != 0) break; memset(ms->ms_id, 0, IEEE80211_NWID_LEN); ms->ms_idlen = ireq->i_len; memcpy(ms->ms_id, tmpmeshid, ireq->i_len); error = ENETRESET; break; case IEEE80211_IOC_MESH_AP: if (ireq->i_val) ms->ms_flags |= IEEE80211_MESHFLAGS_AP; else ms->ms_flags &= ~IEEE80211_MESHFLAGS_AP; error = ENETRESET; break; case IEEE80211_IOC_MESH_FWRD: if (ireq->i_val) ms->ms_flags |= IEEE80211_MESHFLAGS_FWD; else ms->ms_flags &= ~IEEE80211_MESHFLAGS_FWD; mesh_gatemode_setup(vap); break; case IEEE80211_IOC_MESH_GATE: if (ireq->i_val) ms->ms_flags |= IEEE80211_MESHFLAGS_GATE; else ms->ms_flags &= ~IEEE80211_MESHFLAGS_GATE; break; case IEEE80211_IOC_MESH_TTL: ms->ms_ttl = (uint8_t) ireq->i_val; break; case IEEE80211_IOC_MESH_RTCMD: switch (ireq->i_val) { case IEEE80211_MESH_RTCMD_LIST: return EINVAL; case IEEE80211_MESH_RTCMD_FLUSH: ieee80211_mesh_rt_flush(vap); break; case IEEE80211_MESH_RTCMD_ADD: error = copyin(ireq->i_data, tmpaddr, IEEE80211_ADDR_LEN); if (error != 0) break; if (IEEE80211_ADDR_EQ(vap->iv_myaddr, tmpaddr) || IEEE80211_ADDR_EQ(broadcastaddr, tmpaddr)) return EINVAL; ieee80211_mesh_discover(vap, tmpaddr, NULL); break; case IEEE80211_MESH_RTCMD_DELETE: error = copyin(ireq->i_data, tmpaddr, IEEE80211_ADDR_LEN); if (error != 0) break; ieee80211_mesh_rt_del(vap, tmpaddr); break; default: return ENOSYS; } break; case IEEE80211_IOC_MESH_PR_METRIC: error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); if (error == 0) { error = mesh_select_proto_metric(vap, tmpproto); if (error == 0) error = ENETRESET; } break; case IEEE80211_IOC_MESH_PR_PATH: error = copyin(ireq->i_data, tmpproto, sizeof(tmpproto)); if (error == 0) { error = mesh_select_proto_path(vap, tmpproto); if (error == 0) error = ENETRESET; } break; default: return ENOSYS; } return error; } IEEE80211_IOCTL_SET(mesh, mesh_ioctl_set80211); diff --git a/sys/net80211/ieee80211_node.c b/sys/net80211/ieee80211_node.c index f2fc3d21a361..f5b05ed769c9 100644 --- a/sys/net80211/ieee80211_node.c +++ b/sys/net80211/ieee80211_node.c @@ -1,3139 +1,3204 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #ifdef IEEE80211_SUPPORT_TDMA #include #endif #include #include #include #include #include #ifdef IEEE80211_DEBUG_REFCNT #define __debrefcnt_used #else #define __debrefcnt_used __unused #endif /* * IEEE80211_NODE_HASHSIZE must be a power of 2. */ CTASSERT((IEEE80211_NODE_HASHSIZE & (IEEE80211_NODE_HASHSIZE-1)) == 0); /* * Association id's are managed with a bit vector. */ #define IEEE80211_AID_SET(_vap, b) \ ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] |= \ (1 << (IEEE80211_AID(b) % 32))) #define IEEE80211_AID_CLR(_vap, b) \ ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] &= \ ~(1 << (IEEE80211_AID(b) % 32))) #define IEEE80211_AID_ISSET(_vap, b) \ ((_vap)->iv_aid_bitmap[IEEE80211_AID(b) / 32] & (1 << (IEEE80211_AID(b) % 32))) static int ieee80211_sta_join1(struct ieee80211_node *); static struct ieee80211_node *ieee80211_alloc_node( struct ieee80211_node_table *, struct ieee80211vap *, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *, int); static struct ieee80211_node *node_alloc(struct ieee80211vap *, const uint8_t [IEEE80211_ADDR_LEN]); static int node_init(struct ieee80211_node *); static void node_cleanup(struct ieee80211_node *); static void node_free(struct ieee80211_node *); static void node_age(struct ieee80211_node *); static int8_t node_getrssi(const struct ieee80211_node *); static void node_getsignal(const struct ieee80211_node *, int8_t *, int8_t *); static void node_getmimoinfo(const struct ieee80211_node *, struct ieee80211_mimo_info *); static void __ieee80211_free_node(struct ieee80211_node *); static void node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni); static void ieee80211_node_table_init(struct ieee80211com *ic, struct ieee80211_node_table *nt, const char *name, int inact, int keymaxix); static void ieee80211_node_table_reset(struct ieee80211_node_table *, struct ieee80211vap *); static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt); static void ieee80211_vap_erp_timeout(struct ieee80211vap *); MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state"); MALLOC_DEFINE(M_80211_NODE_IE, "80211nodeie", "802.11 node ie"); void ieee80211_node_attach(struct ieee80211com *ic) { /* XXX really want maxlen enforced per-sta */ ieee80211_ageq_init(&ic->ic_stageq, ic->ic_max_keyix * 8, "802.11 staging q"); ieee80211_node_table_init(ic, &ic->ic_sta, "station", IEEE80211_INACT_INIT, ic->ic_max_keyix); callout_init(&ic->ic_inact, 1); callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, ieee80211_node_timeout, ic); ic->ic_node_alloc = node_alloc; ic->ic_node_init = node_init; ic->ic_node_free = node_free; ic->ic_node_cleanup = node_cleanup; ic->ic_node_age = node_age; ic->ic_node_drain = node_age; /* NB: same as age */ ic->ic_node_getrssi = node_getrssi; ic->ic_node_getsignal = node_getsignal; ic->ic_node_getmimoinfo = node_getmimoinfo; /* * Set flags to be propagated to all vap's; * these define default behaviour/configuration. */ ic->ic_flags_ext |= IEEE80211_FEXT_INACT; /* inactivity processing */ } void ieee80211_node_detach(struct ieee80211com *ic) { callout_drain(&ic->ic_inact); ieee80211_node_table_cleanup(&ic->ic_sta); ieee80211_ageq_drain(&ic->ic_stageq); ieee80211_ageq_cleanup(&ic->ic_stageq); } void ieee80211_node_vattach(struct ieee80211vap *vap) { /* NB: driver can override */ vap->iv_max_aid = IEEE80211_AID_DEF; /* default station inactivity timer settings */ vap->iv_inact_init = IEEE80211_INACT_INIT; vap->iv_inact_auth = IEEE80211_INACT_AUTH; vap->iv_inact_run = IEEE80211_INACT_RUN; vap->iv_inact_probe = IEEE80211_INACT_PROBE; IEEE80211_DPRINTF(vap, IEEE80211_MSG_INACT, "%s: init %u auth %u run %u probe %u\n", __func__, vap->iv_inact_init, vap->iv_inact_auth, vap->iv_inact_run, vap->iv_inact_probe); } void ieee80211_node_latevattach(struct ieee80211vap *vap) { /* XXX should ieee80211_vap_attach(), our only caller hold the lock? */ IEEE80211_UNLOCK_ASSERT(vap->iv_ic); if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* XXX should we allow max aid to be zero? */ if (vap->iv_max_aid < IEEE80211_AID_MIN) { vap->iv_max_aid = IEEE80211_AID_MIN; if_printf(vap->iv_ifp, "WARNING: max aid too small, changed to %d\n", vap->iv_max_aid); } vap->iv_aid_bitmap = (uint32_t *) IEEE80211_MALLOC( howmany(vap->iv_max_aid, 32) * sizeof(uint32_t), M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (vap->iv_aid_bitmap == NULL) { /* XXX no way to recover */ printf("%s: no memory for AID bitmap, max aid %d!\n", __func__, vap->iv_max_aid); vap->iv_max_aid = 0; } } IEEE80211_LOCK(vap->iv_ic); ieee80211_reset_bss(vap); IEEE80211_UNLOCK(vap->iv_ic); vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode); } void ieee80211_node_vdetach(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; /* XXX should ieee80211_vap_detach(), our only caller hold the lock? */ IEEE80211_UNLOCK_ASSERT(vap->iv_ic); ieee80211_node_table_reset(&ic->ic_sta, vap); IEEE80211_LOCK(ic); if (vap->iv_bss != NULL) { ieee80211_free_node(vap->iv_bss); vap->iv_update_bss(vap, NULL); } IEEE80211_UNLOCK(ic); if (vap->iv_aid_bitmap != NULL) { IEEE80211_FREE(vap->iv_aid_bitmap, M_80211_NODE); vap->iv_aid_bitmap = NULL; } } /* * Port authorize/unauthorize interfaces for use by an authenticator. */ void ieee80211_node_authorize(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; ni->ni_flags |= IEEE80211_NODE_AUTH; ni->ni_inact_reload = vap->iv_inact_run; ni->ni_inact = ni->ni_inact_reload; IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, "%s: inact_reload %u", __func__, ni->ni_inact_reload); } void ieee80211_node_unauthorize(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; ni->ni_flags &= ~IEEE80211_NODE_AUTH; ni->ni_inact_reload = vap->iv_inact_auth; if (ni->ni_inact > ni->ni_inact_reload) ni->ni_inact = ni->ni_inact_reload; IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, "%s: inact_reload %u inact %u", __func__, ni->ni_inact_reload, ni->ni_inact); } /* * Fix tx parameters for a node according to ``association state''. */ void ieee80211_node_setuptxparms(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; enum ieee80211_phymode mode; if (ni->ni_flags & IEEE80211_NODE_VHT) { if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) mode = IEEE80211_MODE_VHT_5GHZ; else mode = IEEE80211_MODE_VHT_2GHZ; } else if (ni->ni_flags & IEEE80211_NODE_HT) { if (IEEE80211_IS_CHAN_5GHZ(ni->ni_chan)) mode = IEEE80211_MODE_11NA; else mode = IEEE80211_MODE_11NG; } else { /* legacy rate handling */ if (IEEE80211_IS_CHAN_ST(ni->ni_chan)) mode = IEEE80211_MODE_STURBO_A; else if (IEEE80211_IS_CHAN_HALF(ni->ni_chan)) mode = IEEE80211_MODE_HALF; else if (IEEE80211_IS_CHAN_QUARTER(ni->ni_chan)) mode = IEEE80211_MODE_QUARTER; /* NB: 108A should be handled as 11a */ else if (IEEE80211_IS_CHAN_A(ni->ni_chan)) mode = IEEE80211_MODE_11A; else if (IEEE80211_IS_CHAN_108G(ni->ni_chan) || (ni->ni_flags & IEEE80211_NODE_ERP)) mode = IEEE80211_MODE_11G; else mode = IEEE80211_MODE_11B; } ni->ni_txparms = &vap->iv_txparms[mode]; } /* * Set/change the channel. The rate set is also updated as * to insure a consistent view by drivers. * XXX should be private but hostap needs it to deal with CSA */ void ieee80211_node_set_chan(struct ieee80211_node *ni, struct ieee80211_channel *chan) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; enum ieee80211_phymode mode; KASSERT(chan != IEEE80211_CHAN_ANYC, ("no channel")); ni->ni_chan = chan; mode = ieee80211_chan2mode(chan); if (IEEE80211_IS_CHAN_HT(chan)) { /* * We must install the legacy rate est in ni_rates and the * HT rate set in ni_htrates. */ ni->ni_htrates = *ieee80211_get_suphtrates(ic, chan); /* * Setup bss tx parameters based on operating mode. We * use legacy rates when operating in a mixed HT+non-HT bss * and non-ERP rates in 11g for mixed ERP+non-ERP bss. */ if (mode == IEEE80211_MODE_11NA && (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) mode = IEEE80211_MODE_11A; else if (mode == IEEE80211_MODE_11NG && (vap->iv_flags_ht & IEEE80211_FHT_PUREN) == 0) mode = IEEE80211_MODE_11G; if (mode == IEEE80211_MODE_11G && (vap->iv_flags & IEEE80211_F_PUREG) == 0) mode = IEEE80211_MODE_11B; } ni->ni_txparms = &vap->iv_txparms[mode]; ni->ni_rates = *ieee80211_get_suprates(ic, chan); } static __inline void copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss) { /* propagate useful state */ nbss->ni_authmode = obss->ni_authmode; nbss->ni_txpower = obss->ni_txpower; nbss->ni_vlan = obss->ni_vlan; /* XXX statistics? */ /* XXX legacy WDS bssid? */ } void ieee80211_create_ibss(struct ieee80211vap* vap, struct ieee80211_channel *chan) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: creating %s on channel %u%c flags 0x%08x\n", __func__, ieee80211_opmode_name[vap->iv_opmode], ieee80211_chan2ieee(ic, chan), ieee80211_channel_type_char(chan), chan->ic_flags); ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, __func__, __LINE__); if (ni == NULL) { /* XXX recovery? */ return; } IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); ni->ni_esslen = vap->iv_des_ssid[0].len; memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); if (vap->iv_bss != NULL) copy_bss(ni, vap->iv_bss); ni->ni_intval = ic->ic_bintval; if (vap->iv_flags & IEEE80211_F_PRIVACY) ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; if (ic->ic_phytype == IEEE80211_T_FH) { ni->ni_fhdwell = 200; /* XXX */ ni->ni_fhindex = 1; } if (vap->iv_opmode == IEEE80211_M_IBSS) { ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */ if (vap->iv_flags & IEEE80211_F_DESBSSID) IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); else { net80211_get_random_bytes(ni->ni_bssid, IEEE80211_ADDR_LEN); /* clear group bit, add local bit */ ni->ni_bssid[0] = (ni->ni_bssid[0] &~ 0x01) | 0x02; } } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { if (vap->iv_flags & IEEE80211_F_DESBSSID) IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid); else #ifdef IEEE80211_SUPPORT_TDMA if ((vap->iv_caps & IEEE80211_C_TDMA) == 0) #endif memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); #ifdef IEEE80211_SUPPORT_MESH } else if (vap->iv_opmode == IEEE80211_M_MBSS) { ni->ni_meshidlen = vap->iv_mesh->ms_idlen; memcpy(ni->ni_meshid, vap->iv_mesh->ms_id, ni->ni_meshidlen); #endif } /* * Fix the channel and related attributes. */ /* clear DFS CAC state on previous channel */ if (ic->ic_bsschan != IEEE80211_CHAN_ANYC && ic->ic_bsschan->ic_freq != chan->ic_freq && IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) ieee80211_dfs_cac_clear(ic, ic->ic_bsschan); ic->ic_bsschan = chan; ieee80211_node_set_chan(ni, chan); ic->ic_curmode = ieee80211_chan2mode(chan); /* * Do mode-specific setup. */ if (IEEE80211_IS_CHAN_FULL(chan)) { if (IEEE80211_IS_CHAN_ANYG(chan)) { /* * Use a mixed 11b/11g basic rate set. */ ieee80211_setbasicrates(&ni->ni_rates, IEEE80211_MODE_11G); if (vap->iv_flags & IEEE80211_F_PUREG) { /* * Also mark OFDM rates basic so 11b * stations do not join (WiFi compliance). */ ieee80211_addbasicrates(&ni->ni_rates, IEEE80211_MODE_11A); } } else if (IEEE80211_IS_CHAN_B(chan)) { /* * Force pure 11b rate set. */ ieee80211_setbasicrates(&ni->ni_rates, IEEE80211_MODE_11B); } } /* XXX TODO: other bits and pieces - eg fast-frames? */ /* If we're an 11n channel then initialise the 11n bits */ if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) { /* XXX what else? */ ieee80211_ht_node_init(ni); ieee80211_vht_node_init(ni); } else if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) { /* XXX what else? */ ieee80211_ht_node_init(ni); } (void) ieee80211_sta_join1(ieee80211_ref_node(ni)); } /* * Reset bss state on transition to the INIT state. * Clear any stations from the table (they have been * deauth'd) and reset the bss node (clears key, rate * etc. state). */ void ieee80211_reset_bss(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni, *obss; IEEE80211_LOCK_ASSERT(ic); ieee80211_node_table_reset(&ic->ic_sta, vap); /* XXX multi-bss: wrong */ ieee80211_vap_reset_erp(vap); ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, __func__, __LINE__); KASSERT(ni != NULL, ("unable to setup initial BSS node")); obss = vap->iv_update_bss(vap, ieee80211_ref_node(ni)); if (obss != NULL) { copy_bss(ni, obss); ni->ni_intval = ic->ic_bintval; ieee80211_free_node(obss); } else IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr); } static int match_ssid(const struct ieee80211_node *ni, int nssid, const struct ieee80211_scan_ssid ssids[]) { int i; for (i = 0; i < nssid; i++) { if (ni->ni_esslen == ssids[i].len && memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0) return 1; } return 0; } /* * Test a node for suitability/compatibility. */ static int check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; uint8_t rate; if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) return 0; if (vap->iv_opmode == IEEE80211_M_IBSS) { if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) return 0; } else { if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) return 0; } if (vap->iv_flags & IEEE80211_F_PRIVACY) { if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) return 0; } else { /* XXX does this mean privacy is supported or required? */ if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) return 0; } rate = ieee80211_fix_rate(ni, &ni->ni_rates, IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); if (rate & IEEE80211_RATE_BASIC) return 0; if (vap->iv_des_nssid != 0 && !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) return 0; if ((vap->iv_flags & IEEE80211_F_DESBSSID) && !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) return 0; return 1; } #ifdef IEEE80211_DEBUG /* * Display node suitability/compatibility. */ static void check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; uint8_t rate; int fail; fail = 0; if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan))) fail |= 0x01; if (vap->iv_opmode == IEEE80211_M_IBSS) { if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) fail |= 0x02; } else { if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0) fail |= 0x02; } if (vap->iv_flags & IEEE80211_F_PRIVACY) { if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) fail |= 0x04; } else { /* XXX does this mean privacy is supported or required? */ if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) fail |= 0x04; } rate = ieee80211_fix_rate(ni, &ni->ni_rates, IEEE80211_F_JOIN | IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE); if (rate & IEEE80211_RATE_BASIC) fail |= 0x08; if (vap->iv_des_nssid != 0 && !match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid)) fail |= 0x10; if ((vap->iv_flags & IEEE80211_F_DESBSSID) && !IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid)) fail |= 0x20; printf(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr)); printf(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' '); printf(" %3d%c", ieee80211_chan2ieee(ic, ni->ni_chan), fail & 0x01 ? '!' : ' '); printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, fail & 0x08 ? '!' : ' '); printf(" %4s%c", (ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : "????", fail & 0x02 ? '!' : ' '); printf(" %3s%c ", (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", fail & 0x04 ? '!' : ' '); ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); printf("%s\n", fail & 0x10 ? "!" : ""); } #endif /* IEEE80211_DEBUG */ int ieee80211_ibss_merge_check(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; if (ni == vap->iv_bss || IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) { /* unchanged, nothing to do */ return 0; } if (!check_bss(vap, ni)) { /* capabilities mismatch */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, "%s: merge failed, capabilities mismatch\n", __func__); #ifdef IEEE80211_DEBUG if (ieee80211_msg_assoc(vap)) check_bss_debug(vap, ni); #endif vap->iv_stats.is_ibss_capmismatch++; return 0; } return 1; } /* * Check if the given node should populate the node table. * * We need to be in "see all beacons for all ssids" mode in order * to do IBSS merges, however this means we will populate nodes for * /all/ IBSS SSIDs, versus just the one we care about. * * So this check ensures the node can actually belong to our IBSS * configuration. For now it simply checks the SSID. */ int ieee80211_ibss_node_check_new(struct ieee80211_node *ni, const struct ieee80211_scanparams *scan) { struct ieee80211vap *vap = ni->ni_vap; int i; /* * If we have no SSID and no scan SSID, return OK. */ if (vap->iv_des_nssid == 0 && scan->ssid == NULL) goto ok; /* * If we have one of (SSID, scan SSID) then return error. */ if (!! (vap->iv_des_nssid == 0) != !! (scan->ssid == NULL)) goto mismatch; /* * Double-check - we need scan SSID. */ if (scan->ssid == NULL) goto mismatch; /* * Check if the scan SSID matches the SSID list for the VAP. */ for (i = 0; i < vap->iv_des_nssid; i++) { /* Sanity length check */ if (vap->iv_des_ssid[i].len != scan->ssid[1]) continue; /* Note: SSID in the scan entry is the IE format */ if (memcmp(vap->iv_des_ssid[i].ssid, scan->ssid + 2, vap->iv_des_ssid[i].len) == 0) goto ok; } mismatch: return (0); ok: return (1); } /* * Handle 802.11 ad hoc network merge. The * convention, set by the Wireless Ethernet Compatibility Alliance * (WECA), is that an 802.11 station will change its BSSID to match * the "oldest" 802.11 ad hoc network, on the same channel, that * has the station's desired SSID. The "oldest" 802.11 network * sends beacons with the greatest TSF timestamp. * * The caller is assumed to validate TSF's before attempting a merge. * * Return !0 if the BSSID changed, 0 otherwise. */ int ieee80211_ibss_merge(struct ieee80211_node *ni) { #ifdef IEEE80211_DEBUG struct ieee80211vap *vap = ni->ni_vap; #endif if (! ieee80211_ibss_merge_check(ni)) return 0; IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, "%s: new bssid %s: %s preamble, %s slot time%s\n", __func__, ether_sprintf(ni->ni_bssid), vap->iv_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", vap->iv_flags&IEEE80211_F_SHSLOT ? "short" : "long", vap->iv_flags&IEEE80211_F_USEPROT ? ", protection" : "" ); return ieee80211_sta_join1(ieee80211_ref_node(ni)); } /* * Calculate HT channel promotion flags for all vaps. * This assumes ni_chan have been setup for each vap. */ static int gethtadjustflags(struct ieee80211com *ic) { struct ieee80211vap *vap; int flags; flags = 0; /* XXX locking */ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { if (vap->iv_state < IEEE80211_S_RUN) continue; switch (vap->iv_opmode) { case IEEE80211_M_WDS: case IEEE80211_M_STA: case IEEE80211_M_AHDEMO: case IEEE80211_M_HOSTAP: case IEEE80211_M_IBSS: case IEEE80211_M_MBSS: flags |= ieee80211_htchanflags(vap->iv_bss->ni_chan); break; default: break; } } return flags; } /* * Calculate VHT channel promotion flags for all vaps. * This assumes ni_chan have been setup for each vap. */ static int getvhtadjustflags(struct ieee80211com *ic) { struct ieee80211vap *vap; int flags; flags = 0; /* XXX locking */ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { if (vap->iv_state < IEEE80211_S_RUN) continue; switch (vap->iv_opmode) { case IEEE80211_M_WDS: case IEEE80211_M_STA: case IEEE80211_M_AHDEMO: case IEEE80211_M_HOSTAP: case IEEE80211_M_IBSS: case IEEE80211_M_MBSS: flags |= ieee80211_vhtchanflags(vap->iv_bss->ni_chan); break; default: break; } } return flags; } /* * Check if the current channel needs to change based on whether * any vap's are using HT20/HT40. This is used to sync the state * of ic_curchan after a channel width change on a running vap. * * Same applies for VHT. */ void ieee80211_sync_curchan(struct ieee80211com *ic) { struct ieee80211_channel *c; c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic)); c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic)); if (c != ic->ic_curchan) { ic->ic_curchan = c; ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); IEEE80211_UNLOCK(ic); ic->ic_set_channel(ic); ieee80211_radiotap_chan_change(ic); IEEE80211_LOCK(ic); } } /* * Setup the current channel. The request channel may be * promoted if other vap's are operating with HT20/HT40. */ void ieee80211_setupcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) { if (ic->ic_htcaps & IEEE80211_HTC_HT) { int flags = gethtadjustflags(ic); /* * Check for channel promotion required to support the * set of running vap's. This assumes we are called * after ni_chan is setup for each vap. */ /* XXX VHT? */ /* NB: this assumes IEEE80211_FHT_USEHT40 > IEEE80211_FHT_HT */ if (flags > ieee80211_htchanflags(c)) c = ieee80211_ht_adjust_channel(ic, c, flags); } /* * VHT promotion - this will at least promote to VHT20/40 * based on what HT has done; it may further promote the * channel to VHT80 or above. */ if (ic->ic_vht_cap.vht_cap_info != 0) { int flags = getvhtadjustflags(ic); if (flags > ieee80211_vhtchanflags(c)) c = ieee80211_vht_adjust_channel(ic, c, flags); } ic->ic_bsschan = ic->ic_curchan = c; ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan); ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan); } /* * Change the current channel. The channel change is guaranteed to have * happened before the next state change. */ void ieee80211_setcurchan(struct ieee80211com *ic, struct ieee80211_channel *c) { ieee80211_setupcurchan(ic, c); ieee80211_runtask(ic, &ic->ic_chan_task); } void ieee80211_update_chw(struct ieee80211com *ic) { ieee80211_setupcurchan(ic, ic->ic_curchan); ieee80211_runtask(ic, &ic->ic_chw_task); } /* * Join the specified IBSS/BSS network. The node is assumed to * be passed in with a held reference. */ static int ieee80211_sta_join1(struct ieee80211_node *selbs) { struct ieee80211vap *vap = selbs->ni_vap; struct ieee80211com *ic = selbs->ni_ic; struct ieee80211_node *obss; int canreassoc; /* * Committed to selbs, setup state. */ IEEE80211_LOCK(ic); /* XXX may recurse here, check callers. */ obss = vap->iv_update_bss(vap, selbs); /* NB: caller assumed to bump refcnt */ IEEE80211_UNLOCK(ic); /* * Check if old+new node have the same address in which * case we can reassociate when operating in sta mode. */ /* XXX We'll not be in RUN anymore as iv_state got updated already? */ canreassoc = (obss != NULL && vap->iv_state == IEEE80211_S_RUN && IEEE80211_ADDR_EQ(obss->ni_macaddr, selbs->ni_macaddr)); if (obss != NULL) { struct ieee80211_node_table *nt = obss->ni_table; copy_bss(selbs, obss); if (nt != NULL) { ieee80211_node_decref(obss); /* iv_bss reference */ IEEE80211_NODE_LOCK(nt); node_reclaim(nt, obss); /* station table reference */ IEEE80211_NODE_UNLOCK(nt); } else { ieee80211_free_node(obss); /* iv_bss reference */ } obss = NULL; /* NB: guard against later use */ } /* * Delete unusable rates; we've already checked * that the negotiated rate set is acceptable. */ ieee80211_fix_rate(vap->iv_bss, &vap->iv_bss->ni_rates, IEEE80211_F_DODEL | IEEE80211_F_JOIN); ieee80211_setcurchan(ic, selbs->ni_chan); /* * Set the erp state (mostly the slot time) to deal with * the auto-select case; this should be redundant if the * mode is locked. */ ieee80211_vap_reset_erp(vap); ieee80211_wme_initparams(vap); if (vap->iv_opmode == IEEE80211_M_STA) { if (canreassoc) { /* Reassociate */ ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); } else { /* * Act as if we received a DEAUTH frame in case we * are invoked from the RUN state. This will cause * us to try to re-authenticate if we are operating * as a station. */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_AUTH, "%s %p<%s> %s -> AUTH, FC0_SUBTYPE_DEAUTH\n", __func__, selbs, ether_sprintf(selbs->ni_macaddr), ieee80211_state_name[vap->iv_state]); ieee80211_new_state(vap, IEEE80211_S_AUTH, IEEE80211_FC0_SUBTYPE_DEAUTH); } } else ieee80211_new_state(vap, IEEE80211_S_RUN, -1); return 1; } int ieee80211_sta_join(struct ieee80211vap *vap, struct ieee80211_channel *chan, const struct ieee80211_scan_entry *se) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; int do_ht = 0; ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr, __func__, __LINE__); if (ni == NULL) { /* XXX msg */ return 0; } /* * Expand scan state into node's format. * XXX may not need all this stuff */ IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid); ni->ni_esslen = se->se_ssid[1]; memcpy(ni->ni_essid, se->se_ssid+2, ni->ni_esslen); ni->ni_tstamp.tsf = se->se_tstamp.tsf; ni->ni_intval = se->se_intval; ni->ni_capinfo = se->se_capinfo; ni->ni_chan = chan; ni->ni_timoff = se->se_timoff; ni->ni_fhdwell = se->se_fhdwell; ni->ni_fhindex = se->se_fhindex; ni->ni_erp = se->se_erp; IEEE80211_RSSI_LPF(ni->ni_avgrssi, se->se_rssi); ni->ni_noise = se->se_noise; if (vap->iv_opmode == IEEE80211_M_STA) { /* NB: only infrastructure mode requires an associd */ ni->ni_flags |= IEEE80211_NODE_ASSOCID; } if (ieee80211_ies_init(&ni->ni_ies, se->se_ies.data, se->se_ies.len)) { ieee80211_ies_expand(&ni->ni_ies); #ifdef IEEE80211_SUPPORT_SUPERG if (ni->ni_ies.ath_ie != NULL) ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); #endif if (ni->ni_ies.htcap_ie != NULL) ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); if (ni->ni_ies.htinfo_ie != NULL) ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); #ifdef IEEE80211_SUPPORT_MESH if (ni->ni_ies.meshid_ie != NULL) ieee80211_parse_meshid(ni, ni->ni_ies.meshid_ie); #endif #ifdef IEEE80211_SUPPORT_TDMA if (ni->ni_ies.tdma_ie != NULL) ieee80211_parse_tdma(ni, ni->ni_ies.tdma_ie); #endif if (ni->ni_ies.vhtcap_ie != NULL) ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie); if (ni->ni_ies.vhtopmode_ie != NULL) ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie); /* XXX parse BSSLOAD IE */ /* XXX parse TXPWRENV IE */ /* XXX parse APCHANREP IE */ } vap->iv_dtim_period = se->se_dtimperiod; vap->iv_dtim_count = 0; /* NB: must be after ni_chan is setup */ ieee80211_setup_rates(ni, se->se_rates, se->se_xrates, IEEE80211_F_DOSORT); if (ieee80211_iserp_rateset(&ni->ni_rates)) ni->ni_flags |= IEEE80211_NODE_ERP; /* * Setup HT state for this node if it's available, otherwise * non-STA modes won't pick this state up. * * For IBSS and related modes that don't go through an * association request/response, the only appropriate place * to setup the HT state is here. */ if (ni->ni_ies.htinfo_ie != NULL && ni->ni_ies.htcap_ie != NULL && vap->iv_flags_ht & IEEE80211_FHT_HT) { ieee80211_ht_node_init(ni); ieee80211_ht_updateparams(ni, ni->ni_ies.htcap_ie, ni->ni_ies.htinfo_ie); do_ht = 1; } /* * Setup VHT state for this node if it's available. * Same as the above. * * For now, don't allow 2GHz VHT operation. */ if (ni->ni_ies.vhtopmode_ie != NULL && ni->ni_ies.vhtcap_ie != NULL && vap->iv_vht_flags & IEEE80211_FVHT_VHT) { if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n", __func__, ni->ni_macaddr, ":"); } else { ieee80211_vht_node_init(ni); ieee80211_vht_updateparams(ni, ni->ni_ies.vhtcap_ie, ni->ni_ies.vhtopmode_ie); ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie, ni->ni_ies.vhtopmode_ie); do_ht = 1; } } /* Finally do the node channel change */ if (do_ht) { ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie, ni->ni_ies.htinfo_ie); ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie, IEEE80211_F_JOIN | IEEE80211_F_DOBRS); ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie); } /* XXX else check for ath FF? */ /* XXX QoS? Difficult given that WME config is specific to a master */ ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); return ieee80211_sta_join1(ieee80211_ref_node(ni)); } /* * Leave the specified IBSS/BSS network. The node is assumed to * be passed in with a held reference. */ void ieee80211_sta_leave(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; ic->ic_node_cleanup(ni); ieee80211_notify_node_leave(ni); } /* * Send a deauthenticate frame and drop the station. */ void ieee80211_node_deauth(struct ieee80211_node *ni, int reason) { /* NB: bump the refcnt to be sure temporary nodes are not reclaimed */ ieee80211_ref_node(ni); if (ni->ni_associd != 0) IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, reason); ieee80211_node_leave(ni); ieee80211_free_node(ni); } static struct ieee80211_node * node_alloc(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct ieee80211_node *ni; ni = (struct ieee80211_node *) IEEE80211_MALLOC(sizeof(struct ieee80211_node), M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); return ni; } static int node_init(struct ieee80211_node *ni) { return 0; } /* * Initialize an ie blob with the specified data. If previous * data exists re-use the data block. As a side effect we clear * all references to specific ie's; the caller is required to * recalculate them. */ int ieee80211_ies_init(struct ieee80211_ies *ies, const uint8_t *data, int len) { /* NB: assumes data+len are the last fields */ memset(ies, 0, offsetof(struct ieee80211_ies, data)); if (ies->data != NULL && ies->len != len) { /* data size changed */ IEEE80211_FREE(ies->data, M_80211_NODE_IE); ies->data = NULL; } if (ies->data == NULL) { ies->data = (uint8_t *) IEEE80211_MALLOC(len, M_80211_NODE_IE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (ies->data == NULL) { ies->len = 0; /* NB: pointers have already been zero'd above */ return 0; } } memcpy(ies->data, data, len); ies->len = len; return 1; } /* * Reclaim storage for an ie blob. */ void ieee80211_ies_cleanup(struct ieee80211_ies *ies) { if (ies->data != NULL) IEEE80211_FREE(ies->data, M_80211_NODE_IE); } /* * Expand an ie blob data contents and to fillin individual * ie pointers. The data blob is assumed to be well-formed; * we don't do any validity checking of ie lengths. */ void ieee80211_ies_expand(struct ieee80211_ies *ies) { uint8_t *ie; int ielen; ie = ies->data; ielen = ies->len; while (ielen > 1) { /* Make sure the given IE length fits into the total length. */ if ((2 + ie[1]) > ielen) { printf("%s: malformed IEs! ies %p { data %p len %d }: " "ie %u len 2+%u > total len left %d\n", __func__, ies, ies->data, ies->len, ie[0], ie[1], ielen); return; } switch (ie[0]) { case IEEE80211_ELEMID_VENDOR: if (iswpaoui(ie)) ies->wpa_ie = ie; else if (iswmeoui(ie)) ies->wme_ie = ie; #ifdef IEEE80211_SUPPORT_SUPERG else if (isatherosoui(ie)) ies->ath_ie = ie; #endif #ifdef IEEE80211_SUPPORT_TDMA else if (istdmaoui(ie)) ies->tdma_ie = ie; #endif break; case IEEE80211_ELEMID_RSN: ies->rsn_ie = ie; break; case IEEE80211_ELEMID_HTCAP: ies->htcap_ie = ie; break; case IEEE80211_ELEMID_HTINFO: ies->htinfo_ie = ie; break; #ifdef IEEE80211_SUPPORT_MESH case IEEE80211_ELEMID_MESHID: ies->meshid_ie = ie; break; #endif case IEEE80211_ELEMID_VHT_CAP: ies->vhtcap_ie = ie; break; case IEEE80211_ELEMID_VHT_OPMODE: ies->vhtopmode_ie = ie; break; case IEEE80211_ELEMID_VHT_PWR_ENV: ies->vhtpwrenv_ie = ie; break; case IEEE80211_ELEMID_BSSLOAD: ies->bssload_ie = ie; break; case IEEE80211_ELEMID_APCHANREP: ies->apchanrep_ie = ie; break; } ielen -= 2 + ie[1]; ie += 2 + ie[1]; } } /* * Reclaim any resources in a node and reset any critical * state. Typically nodes are free'd immediately after, * but in some cases the storage may be reused so we need * to insure consistent state (should probably fix that). */ static void node_cleanup(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; int i; /* NB: preserve ni_table */ if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) { if (vap->iv_opmode != IEEE80211_M_STA) vap->iv_ps_sta--; ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT; IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni, "power save mode off, %u sta's in ps mode", vap->iv_ps_sta); } /* * Cleanup any VHT and HT-related state. */ if (ni->ni_flags & IEEE80211_NODE_VHT) ieee80211_vht_node_cleanup(ni); if (ni->ni_flags & IEEE80211_NODE_HT) ieee80211_ht_node_cleanup(ni); #ifdef IEEE80211_SUPPORT_SUPERG /* Always do FF node cleanup; for A-MSDU */ ieee80211_ff_node_cleanup(ni); #endif #ifdef IEEE80211_SUPPORT_MESH /* * Cleanup any mesh-related state. */ if (vap->iv_opmode == IEEE80211_M_MBSS) ieee80211_mesh_node_cleanup(ni); #endif /* * Clear any staging queue entries. */ ieee80211_ageq_drain_node(&ic->ic_stageq, ni); /* * Clear AREF flag that marks the authorization refcnt bump * has happened. This is probably not needed as the node * should always be removed from the table so not found but * do it just in case. * Likewise clear the ASSOCID flag as these flags are intended * to be managed in tandem. */ ni->ni_flags &= ~(IEEE80211_NODE_AREF | IEEE80211_NODE_ASSOCID); /* * Drain power save queue and, if needed, clear TIM. */ if (ieee80211_node_psq_drain(ni) != 0 && vap->iv_set_tim != NULL) vap->iv_set_tim(ni, 0); ni->ni_associd = 0; if (ni->ni_challenge != NULL) { IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); ni->ni_challenge = NULL; } /* * Preserve SSID, WPA, and WME ie's so the bss node is * reusable during a re-auth/re-assoc state transition. * If we remove these data they will not be recreated * because they come from a probe-response or beacon frame * which cannot be expected prior to the association-response. * This should not be an issue when operating in other modes * as stations leaving always go through a full state transition * which will rebuild this state. * * XXX does this leave us open to inheriting old state? */ for (i = 0; i < nitems(ni->ni_rxfrag); i++) if (ni->ni_rxfrag[i] != NULL) { m_freem(ni->ni_rxfrag[i]); ni->ni_rxfrag[i] = NULL; } /* * Must be careful here to remove any key map entry w/o a LOR. */ ieee80211_node_delucastkey(ni); } static void node_free(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; ieee80211_ratectl_node_deinit(ni); ic->ic_node_cleanup(ni); ieee80211_ies_cleanup(&ni->ni_ies); ieee80211_psq_cleanup(&ni->ni_psq); IEEE80211_FREE(ni, M_80211_NODE); } static void node_age(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; /* * Age frames on the power save queue. */ if (ieee80211_node_psq_age(ni) != 0 && ni->ni_psq.psq_len == 0 && vap->iv_set_tim != NULL) vap->iv_set_tim(ni, 0); /* * Age out HT resources (e.g. frames on the * A-MPDU reorder queues). */ if (ni->ni_associd != 0 && (ni->ni_flags & IEEE80211_NODE_HT)) ieee80211_ht_node_age(ni); } static int8_t node_getrssi(const struct ieee80211_node *ni) { uint32_t avgrssi = ni->ni_avgrssi; int32_t rssi; if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) return 0; rssi = IEEE80211_RSSI_GET(avgrssi); return rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; } static void node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise) { *rssi = node_getrssi(ni); *noise = ni->ni_noise; } static void node_getmimoinfo(const struct ieee80211_node *ni, struct ieee80211_mimo_info *info) { int i; uint32_t avgrssi; int32_t rssi; bzero(info, sizeof(*info)); for (i = 0; i < MIN(IEEE80211_MAX_CHAINS, ni->ni_mimo_chains); i++) { /* Note: for now, just pri20 channel info */ avgrssi = ni->ni_mimo_rssi_ctl[i]; if (avgrssi == IEEE80211_RSSI_DUMMY_MARKER) { info->ch[i].rssi[0] = 0; } else { rssi = IEEE80211_RSSI_GET(avgrssi); info->ch[i].rssi[0] = rssi < 0 ? 0 : rssi > 127 ? 127 : rssi; } info->ch[i].noise[0] = ni->ni_mimo_noise_ctl[i]; } /* XXX ext radios? */ /* XXX EVM? */ } static void ieee80211_add_node_nt(struct ieee80211_node_table *nt, struct ieee80211_node *ni) { struct ieee80211com *ic = nt->nt_ic; int hash; IEEE80211_NODE_LOCK_ASSERT(nt); hash = IEEE80211_NODE_HASH(ic, ni->ni_macaddr); (void) ic; /* XXX IEEE80211_NODE_HASH */ TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list); LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash); nt->nt_count++; ni->ni_table = nt; } static void ieee80211_del_node_nt(struct ieee80211_node_table *nt, struct ieee80211_node *ni) { IEEE80211_NODE_LOCK_ASSERT(nt); TAILQ_REMOVE(&nt->nt_node, ni, ni_list); LIST_REMOVE(ni, ni_hash); nt->nt_count--; KASSERT(nt->nt_count >= 0, ("nt_count is negative (%d)!\n", nt->nt_count)); ni->ni_table = NULL; } static struct ieee80211_node * ieee80211_alloc_node(struct ieee80211_node_table *nt, struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211com *ic = nt->nt_ic; struct ieee80211_node *ni; ni = ic->ic_node_alloc(vap, macaddr); if (ni == NULL) { vap->iv_stats.is_rx_nodealloc++; return NULL; } IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "%s %p<%s> in %s table\n", __func__, ni, ether_sprintf(macaddr), nt->nt_name); IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); ieee80211_node_initref(ni); /* mark referenced */ #ifdef IEEE80211_DEBUG_REFCNT IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); #endif ni->ni_chan = IEEE80211_CHAN_ANYC; ni->ni_authmode = IEEE80211_AUTH_OPEN; ni->ni_txpower = ic->ic_txpowlimit; /* max power */ ni->ni_txparms = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); ni->ni_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; ni->ni_inact_reload = nt->nt_inact_init; ni->ni_inact = ni->ni_inact_reload; ni->ni_ath_defkeyix = 0x7fff; ieee80211_psq_init(&ni->ni_psq, "unknown"); #ifdef IEEE80211_SUPPORT_MESH if (vap->iv_opmode == IEEE80211_M_MBSS) ieee80211_mesh_node_init(vap, ni); #endif IEEE80211_NODE_LOCK(nt); ieee80211_add_node_nt(nt, ni); ni->ni_vap = vap; ni->ni_ic = ic; IEEE80211_NODE_UNLOCK(nt); /* handle failure; free node state */ if (ic->ic_node_init(ni) != 0) { vap->iv_stats.is_rx_nodealloc++; ieee80211_psq_cleanup(&ni->ni_psq); ieee80211_ratectl_node_deinit(ni); __ieee80211_free_node(ni); return NULL; } IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, "%s: inact_reload %u", __func__, ni->ni_inact_reload); return ni; } /* * Craft a temporary node suitable for sending a management frame * to the specified station. We craft only as much state as we * need to do the work since the node will be immediately reclaimed * once the send completes. */ struct ieee80211_node * ieee80211_tmp_node(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; ni = ic->ic_node_alloc(vap, macaddr); if (ni != NULL) { struct ieee80211_node *bss = vap->iv_bss; IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "%s %p<%s>\n", __func__, ni, ether_sprintf(macaddr)); ni->ni_table = NULL; /* NB: pedantic */ ni->ni_ic = ic; /* NB: needed to set channel */ ni->ni_vap = vap; IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr); IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); ieee80211_node_initref(ni); /* mark referenced */ #ifdef IEEE80211_DEBUG_REFCNT /* Only one caller so we skip func/line passing into the func. */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, "", -1, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); #endif /* NB: required by ieee80211_fix_rate */ ieee80211_node_set_chan(ni, bss->ni_chan); ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE); ni->ni_txpower = bss->ni_txpower; /* XXX optimize away */ ieee80211_psq_init(&ni->ni_psq, "unknown"); ieee80211_ratectl_node_init(ni); /* handle failure; free node state */ if (ic->ic_node_init(ni) != 0) { vap->iv_stats.is_rx_nodealloc++; ieee80211_psq_cleanup(&ni->ni_psq); ieee80211_ratectl_node_deinit(ni); __ieee80211_free_node(ni); return NULL; } } else { /* XXX msg */ vap->iv_stats.is_rx_nodealloc++; } return ni; } struct ieee80211_node * ieee80211_dup_bss(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr, __func__, __LINE__); if (ni != NULL) { struct ieee80211_node *bss = vap->iv_bss; /* * Inherit from iv_bss. */ copy_bss(ni, bss); IEEE80211_ADDR_COPY(ni->ni_bssid, bss->ni_bssid); ieee80211_node_set_chan(ni, bss->ni_chan); } return ni; } /* * Create a bss node for a legacy WDS vap. The far end does * not associate so we just create create a new node and * simulate an association. The caller is responsible for * installing the node as the bss node and handling any further * setup work like authorizing the port. */ struct ieee80211_node * ieee80211_node_create_wds(struct ieee80211vap *vap, const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *chan) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; /* XXX check if node already in sta table? */ ni = ieee80211_alloc_node(&ic->ic_sta, vap, bssid, __func__, __LINE__); if (ni != NULL) { ni->ni_wdsvap = vap; IEEE80211_ADDR_COPY(ni->ni_bssid, bssid); /* * Inherit any manually configured settings. */ copy_bss(ni, vap->iv_bss); ieee80211_node_set_chan(ni, chan); /* NB: propagate ssid so available to WPA supplicant */ ni->ni_esslen = vap->iv_des_ssid[0].len; memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen); /* NB: no associd for peer */ /* * There are no management frames to use to * discover neighbor capabilities, so blindly * propagate the local configuration. */ if (vap->iv_flags & IEEE80211_F_WME) ni->ni_flags |= IEEE80211_NODE_QOS; #ifdef IEEE80211_SUPPORT_SUPERG if (vap->iv_flags & IEEE80211_F_FF) ni->ni_flags |= IEEE80211_NODE_FF; #endif /* XXX VHT */ if ((ic->ic_htcaps & IEEE80211_HTC_HT) && (vap->iv_flags_ht & IEEE80211_FHT_HT)) { /* * Device is HT-capable and HT is enabled for * the vap; setup HT operation. On return * ni_chan will be adjusted to an HT channel. */ ieee80211_ht_wds_init(ni); if (vap->iv_vht_flags & IEEE80211_FVHT_VHT) { printf("%s: TODO: vht_wds_init\n", __func__); } } else { struct ieee80211_channel *c = ni->ni_chan; /* * Force a legacy channel to be used. */ c = ieee80211_find_channel(ic, c->ic_freq, c->ic_flags &~ IEEE80211_CHAN_HT); KASSERT(c != NULL, ("no legacy channel, %u/%x", ni->ni_chan->ic_freq, ni->ni_chan->ic_flags)); ni->ni_chan = c; } } return ni; } struct ieee80211_node * _ieee80211_find_node_locked(struct ieee80211_node_table *nt, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node *ni; int hash; IEEE80211_NODE_LOCK_ASSERT(nt); hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { ieee80211_ref_node(ni); /* mark referenced */ #ifdef IEEE80211_DEBUG_REFCNT IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); #endif return ni; } } return NULL; } struct ieee80211_node * _ieee80211_find_node(struct ieee80211_node_table *nt, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node *ni; IEEE80211_NODE_LOCK(nt); ni = _ieee80211_find_node_locked(nt, macaddr, func, line); IEEE80211_NODE_UNLOCK(nt); return ni; } struct ieee80211_node * _ieee80211_find_vap_node_locked(struct ieee80211_node_table *nt, const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node *ni; int hash; IEEE80211_NODE_LOCK_ASSERT(nt); hash = IEEE80211_NODE_HASH(nt->nt_ic, macaddr); LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) { if (ni->ni_vap == vap && IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { ieee80211_ref_node(ni); /* mark referenced */ #ifdef IEEE80211_DEBUG_REFCNT IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); #endif return ni; } } return NULL; } struct ieee80211_node * _ieee80211_find_vap_node(struct ieee80211_node_table *nt, const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node *ni; IEEE80211_NODE_LOCK(nt); ni = _ieee80211_find_vap_node_locked(nt, vap, macaddr, func, line); IEEE80211_NODE_UNLOCK(nt); return ni; } /* * Fake up a node; this handles node discovery in adhoc mode. * Note that for the driver's benefit we treat this like * an association so the driver has an opportunity to setup * it's private state. */ struct ieee80211_node * ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct ieee80211_node *ni; IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_ASSOC, "%s: mac<%s>\n", __func__, ether_sprintf(macaddr)); ni = ieee80211_dup_bss(vap, macaddr); if (ni != NULL) { struct ieee80211com *ic = vap->iv_ic; /* XXX no rate negotiation; just dup */ ni->ni_rates = vap->iv_bss->ni_rates; if (ieee80211_iserp_rateset(&ni->ni_rates)) ni->ni_flags |= IEEE80211_NODE_ERP; if (vap->iv_opmode == IEEE80211_M_AHDEMO) { /* * In adhoc demo mode there are no management * frames to use to discover neighbor capabilities, * so blindly propagate the local configuration * so we can do interesting things (e.g. use * WME to disable ACK's). */ /* * XXX TODO: 11n? */ if (vap->iv_flags & IEEE80211_F_WME) ni->ni_flags |= IEEE80211_NODE_QOS; #ifdef IEEE80211_SUPPORT_SUPERG if (vap->iv_flags & IEEE80211_F_FF) ni->ni_flags |= IEEE80211_NODE_FF; #endif } ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); /* * XXX TODO: 11n? At least 20MHz, at least A-MPDU RX, * not A-MPDU TX; not 11n rates, etc. We'll cycle * that after we hear that we can indeed do 11n * (either by a beacon frame or by a probe response.) */ /* * This is the first time we see the node. */ if (ic->ic_newassoc != NULL) ic->ic_newassoc(ni, 1); /* * Kick off a probe request to the given node; * we will then use the probe response to update * 11n/etc configuration state. * * XXX TODO: this isn't guaranteed, and until we get * a probe response, we won't be able to actually * do anything 802.11n related to the node. * So if this does indeed work, maybe we should hold * off on sending responses until we get the probe * response, or just default to some sensible subset * of 802.11n behaviour (eg always allow aggregation * negotiation TO us, but not FROM us, etc) so we * aren't entirely busted. */ if (vap->iv_opmode == IEEE80211_M_IBSS) { ieee80211_send_probereq(ni, /* node */ vap->iv_myaddr, /* SA */ ni->ni_macaddr, /* DA */ vap->iv_bss->ni_bssid, /* BSSID */ vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); /* SSID */ } /* XXX not right for 802.1x/WPA */ ieee80211_node_authorize(ni); } return ni; } void ieee80211_init_neighbor(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const struct ieee80211_scanparams *sp) { int do_ht_setup = 0, do_vht_setup = 0; ni->ni_esslen = sp->ssid[1]; memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]); IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3); memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp)); ni->ni_intval = sp->bintval; ni->ni_capinfo = sp->capinfo; ni->ni_chan = ni->ni_ic->ic_curchan; ni->ni_fhdwell = sp->fhdwell; ni->ni_fhindex = sp->fhindex; ni->ni_erp = sp->erp; ni->ni_timoff = sp->timoff; #ifdef IEEE80211_SUPPORT_MESH if (ni->ni_vap->iv_opmode == IEEE80211_M_MBSS) ieee80211_mesh_init_neighbor(ni, wh, sp); #endif if (ieee80211_ies_init(&ni->ni_ies, sp->ies, sp->ies_len)) { ieee80211_ies_expand(&ni->ni_ies); if (ni->ni_ies.wme_ie != NULL) ni->ni_flags |= IEEE80211_NODE_QOS; else ni->ni_flags &= ~IEEE80211_NODE_QOS; #ifdef IEEE80211_SUPPORT_SUPERG if (ni->ni_ies.ath_ie != NULL) ieee80211_parse_ath(ni, ni->ni_ies.ath_ie); #endif if (ni->ni_ies.htcap_ie != NULL) ieee80211_parse_htcap(ni, ni->ni_ies.htcap_ie); if (ni->ni_ies.htinfo_ie != NULL) ieee80211_parse_htinfo(ni, ni->ni_ies.htinfo_ie); if (ni->ni_ies.vhtcap_ie != NULL) ieee80211_parse_vhtcap(ni, ni->ni_ies.vhtcap_ie); if (ni->ni_ies.vhtopmode_ie != NULL) ieee80211_parse_vhtopmode(ni, ni->ni_ies.vhtopmode_ie); if ((ni->ni_ies.htcap_ie != NULL) && (ni->ni_ies.htinfo_ie != NULL) && (ni->ni_vap->iv_flags_ht & IEEE80211_FHT_HT)) { do_ht_setup = 1; } if ((ni->ni_ies.vhtcap_ie != NULL) && (ni->ni_ies.vhtopmode_ie != NULL) && (ni->ni_vap->iv_vht_flags & IEEE80211_FVHT_VHT)) { do_vht_setup = 1; } } /* NB: must be after ni_chan is setup */ ieee80211_setup_rates(ni, sp->rates, sp->xrates, IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | IEEE80211_F_DONEGO | IEEE80211_F_DODEL); /* * If the neighbor is HT compatible, flip that on. */ if (do_ht_setup) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, "%s: doing HT setup\n", __func__); ieee80211_ht_node_init(ni); ieee80211_ht_updateparams(ni, ni->ni_ies.htcap_ie, ni->ni_ies.htinfo_ie); if (do_vht_setup) { if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { printf("%s: BSS %6D: 2GHz channel, VHT info; ignoring\n", __func__, ni->ni_macaddr, ":"); } else { ieee80211_vht_node_init(ni); ieee80211_vht_updateparams(ni, ni->ni_ies.vhtcap_ie, ni->ni_ies.vhtopmode_ie); ieee80211_setup_vht_rates(ni, ni->ni_ies.vhtcap_ie, ni->ni_ies.vhtopmode_ie); } } /* * Finally do the channel upgrade/change based * on the HT/VHT configuration. */ ieee80211_ht_updateparams_final(ni, ni->ni_ies.htcap_ie, ni->ni_ies.htinfo_ie); ieee80211_setup_htrates(ni, ni->ni_ies.htcap_ie, IEEE80211_F_JOIN | IEEE80211_F_DOBRS); ieee80211_setup_basic_htrates(ni, ni->ni_ies.htinfo_ie); ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); /* Reassociate; we're now 11n/11ac */ /* * XXX TODO: this is the wrong thing to do - * we're calling it with isnew=1 so the ath(4) * driver reinitialises the rate tables. * This "mostly" works for ath(4), but it won't * be right for firmware devices which allocate * node states. * * So, do we just create a new node and delete * the old one? Or? */ if (ni->ni_ic->ic_newassoc) ni->ni_ic->ic_newassoc(ni, 1); } } /* * Do node discovery in adhoc mode on receipt of a beacon * or probe response frame. Note that for the driver's * benefit we treat this like an association so the * driver has an opportunity to setup it's private state. */ struct ieee80211_node * ieee80211_add_neighbor(struct ieee80211vap *vap, const struct ieee80211_frame *wh, const struct ieee80211_scanparams *sp) { struct ieee80211_node *ni; IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, "%s: mac<%s>\n", __func__, ether_sprintf(wh->i_addr2)); ni = ieee80211_dup_bss(vap, wh->i_addr2);/* XXX alloc_node? */ if (ni != NULL) { struct ieee80211com *ic = vap->iv_ic; ieee80211_init_neighbor(ni, wh, sp); if (ieee80211_iserp_rateset(&ni->ni_rates)) ni->ni_flags |= IEEE80211_NODE_ERP; ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); if (ic->ic_newassoc != NULL) ic->ic_newassoc(ni, 1); /* XXX not right for 802.1x/WPA */ ieee80211_node_authorize(ni); } return ni; } #define IS_PROBEREQ(wh) \ ((wh->i_fc[0] & (IEEE80211_FC0_TYPE_MASK|IEEE80211_FC0_SUBTYPE_MASK)) \ == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) #define IS_BCAST_PROBEREQ(wh) \ (IS_PROBEREQ(wh) && IEEE80211_IS_MULTICAST( \ ((const struct ieee80211_frame *)(wh))->i_addr3)) static __inline struct ieee80211_node * _find_rxnode(struct ieee80211_node_table *nt, const struct ieee80211_frame_min *wh, const char *func __debrefcnt_used, int line __debrefcnt_used) { if (IS_BCAST_PROBEREQ(wh)) return NULL; /* spam bcast probe req to all vap's */ return _ieee80211_find_node_locked(nt, wh->i_addr2, func, line); } /* * Locate the node for sender, track state, and then pass the * (referenced) node up to the 802.11 layer for its use. Note * we can return NULL if the sender is not in the table. */ struct ieee80211_node * _ieee80211_find_rxnode(struct ieee80211com *ic, const struct ieee80211_frame_min *wh, const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node_table *nt; struct ieee80211_node *ni; nt = &ic->ic_sta; IEEE80211_NODE_LOCK(nt); ni = _find_rxnode(nt, wh, func, line); IEEE80211_NODE_UNLOCK(nt); return ni; } /* * Like ieee80211_find_rxnode but use the supplied h/w * key index as a hint to locate the node in the key * mapping table. If an entry is present at the key * index we return it; otherwise do a normal lookup and * update the mapping table if the station has a unicast * key assigned to it. */ struct ieee80211_node * _ieee80211_find_rxnode_withkey(struct ieee80211com *ic, const struct ieee80211_frame_min *wh, ieee80211_keyix keyix, const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node_table *nt; struct ieee80211_node *ni; nt = &ic->ic_sta; IEEE80211_NODE_LOCK(nt); if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) ni = nt->nt_keyixmap[keyix]; else ni = NULL; if (ni == NULL) { ni = _find_rxnode(nt, wh, func, line); if (ni != NULL && nt->nt_keyixmap != NULL) { /* * If the station has a unicast key cache slot * assigned update the key->node mapping table. */ keyix = ni->ni_ucastkey.wk_rxkeyix; /* XXX can keyixmap[keyix] != NULL? */ if (keyix < nt->nt_keyixmax && nt->nt_keyixmap[keyix] == NULL) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s: add key map entry %p<%s> refcnt %d\n", __func__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); nt->nt_keyixmap[keyix] = ieee80211_ref_node(ni); } } } else { if (IS_BCAST_PROBEREQ(wh)) ni = NULL; /* spam bcast probe req to all vap's */ else ieee80211_ref_node(ni); } IEEE80211_NODE_UNLOCK(nt); return ni; } #undef IS_BCAST_PROBEREQ #undef IS_PROBEREQ /* * Return a reference to the appropriate node for sending * a data frame. This handles node discovery in adhoc networks. */ struct ieee80211_node * _ieee80211_find_txnode(struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta; struct ieee80211_node *ni; /* * The destination address should be in the node table * unless this is a multicast/broadcast frame. We can * also optimize station mode operation, all frames go * to the bss node. */ /* XXX can't hold lock across dup_bss 'cuz of recursive locking */ IEEE80211_NODE_LOCK(nt); if (vap->iv_opmode == IEEE80211_M_STA || vap->iv_opmode == IEEE80211_M_WDS || IEEE80211_IS_MULTICAST(macaddr)) ni = ieee80211_ref_node(vap->iv_bss); else ni = _ieee80211_find_node_locked(nt, macaddr, func, line); IEEE80211_NODE_UNLOCK(nt); if (ni == NULL) { if (vap->iv_opmode == IEEE80211_M_IBSS || vap->iv_opmode == IEEE80211_M_AHDEMO) { /* * In adhoc mode cons up a node for the destination. * Note that we need an additional reference for the * caller to be consistent with * ieee80211_find_node_locked. */ /* * XXX TODO: this doesn't fake up 11n state; we need * to find another way to get it upgraded. */ ni = ieee80211_fakeup_adhoc_node(vap, macaddr); if (ni != NULL) (void) ieee80211_ref_node(ni); } else { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, macaddr, "no node, discard frame (%s)", __func__); vap->iv_stats.is_tx_nonode++; } } return ni; } struct ieee80211_node * _ieee80211_ref_node(struct ieee80211_node *ni, const char *func __debrefcnt_used, int line __debrefcnt_used) { #ifdef IEEE80211_DEBUG_REFCNT IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)+1); #endif ieee80211_node_incref(ni); return (ni); } static void __ieee80211_free_node(struct ieee80211_node *ni) { struct ieee80211_node_table *nt = ni->ni_table; /* * NB: careful about referencing the vap as it may be * gone if the last reference was held by a driver. * We know the com will always be present so it's safe * to use ni_ic below to reclaim resources. */ #if 0 IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE, "%s %p<%s> in %s table\n", __func__, ni, ether_sprintf(ni->ni_macaddr), nt != NULL ? nt->nt_name : ""); #endif if (ni->ni_associd != 0) { struct ieee80211vap *vap = ni->ni_vap; if (vap->iv_aid_bitmap != NULL) IEEE80211_AID_CLR(vap, ni->ni_associd); } if (nt != NULL) ieee80211_del_node_nt(nt, ni); ni->ni_ic->ic_node_free(ni); } /* * Clear any entry in the unicast key mapping table. */ static int node_clear_keyixmap(struct ieee80211_node_table *nt, struct ieee80211_node *ni) { ieee80211_keyix keyix; keyix = ni->ni_ucastkey.wk_rxkeyix; if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax && nt->nt_keyixmap[keyix] == ni) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s: %p<%s> clear key map entry %u\n", __func__, ni, ether_sprintf(ni->ni_macaddr), keyix); nt->nt_keyixmap[keyix] = NULL; ieee80211_node_decref(ni); return 1; } return 0; } void _ieee80211_free_node(struct ieee80211_node *ni, const char *func __debrefcnt_used, int line __debrefcnt_used) { struct ieee80211_node_table *nt = ni->ni_table; #ifdef IEEE80211_DEBUG_REFCNT IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s (%s:%u) %p<%s> refcnt %d\n", __func__, func, line, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); #endif if (nt != NULL) { IEEE80211_NODE_LOCK(nt); if (ieee80211_node_dectestref(ni)) { /* * Last reference, reclaim state. */ __ieee80211_free_node(ni); } else if (ieee80211_node_refcnt(ni) == 1) if (node_clear_keyixmap(nt, ni)) __ieee80211_free_node(ni); IEEE80211_NODE_UNLOCK(nt); } else { if (ieee80211_node_dectestref(ni)) __ieee80211_free_node(ni); } } /* * Reclaim a unicast key and clear any key cache state. */ int ieee80211_node_delucastkey(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211_node_table *nt = &ic->ic_sta; struct ieee80211_node *nikey; ieee80211_keyix keyix; int isowned, status; /* * NB: We must beware of LOR here; deleting the key * can cause the crypto layer to block traffic updates * which can generate a LOR against the node table lock; * grab it here and stash the key index for our use below. * * Must also beware of recursion on the node table lock. * When called from node_cleanup we may already have * the node table lock held. Unfortunately there's no * way to separate out this path so we must do this * conditionally. */ isowned = IEEE80211_NODE_IS_LOCKED(nt); if (!isowned) IEEE80211_NODE_LOCK(nt); nikey = NULL; status = 1; /* NB: success */ if (IEEE80211_KEY_UNDEFINED(&ni->ni_ucastkey)) { keyix = ni->ni_ucastkey.wk_rxkeyix; status = ieee80211_crypto_delkey(ni->ni_vap, &ni->ni_ucastkey); if (nt->nt_keyixmap != NULL && keyix < nt->nt_keyixmax) { nikey = nt->nt_keyixmap[keyix]; nt->nt_keyixmap[keyix] = NULL; } } if (!isowned) IEEE80211_NODE_UNLOCK(nt); if (nikey != NULL) { KASSERT(nikey == ni, ("key map out of sync, ni %p nikey %p", ni, nikey)); IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s: delete key map entry %p<%s> refcnt %d\n", __func__, ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)-1); ieee80211_free_node(ni); } return status; } /* * Reclaim a node. If this is the last reference count then * do the normal free work. Otherwise remove it from the node * table and mark it gone by clearing the back-reference. */ static void node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni) { IEEE80211_NODE_LOCK_ASSERT(nt); IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_NODE, "%s: remove %p<%s> from %s table, refcnt %d\n", __func__, ni, ether_sprintf(ni->ni_macaddr), nt->nt_name, ieee80211_node_refcnt(ni)-1); /* * Clear any entry in the unicast key mapping table. * We need to do it here so rx lookups don't find it * in the mapping table even if it's not in the hash * table. We cannot depend on the mapping table entry * being cleared because the node may not be free'd. */ (void)node_clear_keyixmap(nt, ni); if (!ieee80211_node_dectestref(ni)) { /* * Other references are present, just remove the * node from the table so it cannot be found. When * the references are dropped storage will be * reclaimed. */ ieee80211_del_node_nt(nt, ni); } else __ieee80211_free_node(ni); } /* * Node table support. */ static void ieee80211_node_table_init(struct ieee80211com *ic, struct ieee80211_node_table *nt, const char *name, int inact, int keyixmax) { nt->nt_ic = ic; IEEE80211_NODE_LOCK_INIT(nt, ic->ic_name); TAILQ_INIT(&nt->nt_node); nt->nt_count = 0; nt->nt_name = name; nt->nt_inact_init = inact; nt->nt_keyixmax = keyixmax; if (nt->nt_keyixmax > 0) { nt->nt_keyixmap = (struct ieee80211_node **) IEEE80211_MALLOC( keyixmax * sizeof(struct ieee80211_node *), M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (nt->nt_keyixmap == NULL) ic_printf(ic, "Cannot allocate key index map with %u entries\n", keyixmax); } else nt->nt_keyixmap = NULL; } static void ieee80211_node_table_reset(struct ieee80211_node_table *nt, struct ieee80211vap *match) { struct ieee80211_node *ni, *next; IEEE80211_NODE_LOCK(nt); TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) { if (match != NULL && ni->ni_vap != match) continue; /* XXX can this happen? if so need's work */ if (ni->ni_associd != 0) { struct ieee80211vap *vap = ni->ni_vap; if (vap->iv_auth->ia_node_leave != NULL) vap->iv_auth->ia_node_leave(ni); if (vap->iv_aid_bitmap != NULL) IEEE80211_AID_CLR(vap, ni->ni_associd); } ni->ni_wdsvap = NULL; /* clear reference */ node_reclaim(nt, ni); } if (match != NULL && match->iv_opmode == IEEE80211_M_WDS) { /* * Make a separate pass to clear references to this vap * held by DWDS entries. They will not be matched above * because ni_vap will point to the ap vap but we still * need to clear ni_wdsvap when the WDS vap is destroyed * and/or reset. */ TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) if (ni->ni_wdsvap == match) ni->ni_wdsvap = NULL; } IEEE80211_NODE_UNLOCK(nt); } static void ieee80211_node_table_cleanup(struct ieee80211_node_table *nt) { ieee80211_node_table_reset(nt, NULL); if (nt->nt_keyixmap != NULL) { #ifdef DIAGNOSTIC /* XXX verify all entries are NULL */ int i; for (i = 0; i < nt->nt_keyixmax; i++) if (nt->nt_keyixmap[i] != NULL) printf("%s: %s[%u] still active\n", __func__, nt->nt_name, i); #endif IEEE80211_FREE(nt->nt_keyixmap, M_80211_NODE); nt->nt_keyixmap = NULL; } IEEE80211_NODE_LOCK_DESTROY(nt); } static void timeout_stations(void *arg __unused, struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; /* * Only process stations when in RUN state. This * insures, for example, that we don't timeout an * inactive station during CAC. Note that CSA state * is actually handled in ieee80211_node_timeout as * it applies to more than timeout processing. */ if (vap->iv_state != IEEE80211_S_RUN) return; /* * Ignore entries for which have yet to receive an * authentication frame. These are transient and * will be reclaimed when the last reference to them * goes away (when frame xmits complete). */ if ((vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_STA) && (ni->ni_flags & IEEE80211_NODE_AREF) == 0) return; /* * Free fragment if not needed anymore * (last fragment older than 1s). * XXX doesn't belong here, move to node_age */ if (ni->ni_rxfrag[0] != NULL && ticks > ni->ni_rxfragstamp + hz) { m_freem(ni->ni_rxfrag[0]); ni->ni_rxfrag[0] = NULL; } if (ni->ni_inact > 0) { ni->ni_inact--; IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni, "%s: inact %u inact_reload %u nrates %u", __func__, ni->ni_inact, ni->ni_inact_reload, ni->ni_rates.rs_nrates); } /* * Special case ourself; we may be idle for extended periods * of time and regardless reclaiming our state is wrong. * XXX run ic_node_age */ /* XXX before inact decrement? */ if (ni == vap->iv_bss) return; if (ni->ni_associd != 0 || (vap->iv_opmode == IEEE80211_M_IBSS || vap->iv_opmode == IEEE80211_M_AHDEMO)) { /* * Age/drain resources held by the station. */ ic->ic_node_age(ni); /* * Probe the station before time it out. We * send a null data frame which may not be * universally supported by drivers (need it * for ps-poll support so it should be...). * * XXX don't probe the station unless we've * received a frame from them (and have * some idea of the rates they are capable * of); this will get fixed more properly * soon with better handling of the rate set. */ if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && (0 < ni->ni_inact && ni->ni_inact <= vap->iv_inact_probe) && ni->ni_rates.rs_nrates != 0) { IEEE80211_NOTE(vap, IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, "%s", "probe station due to inactivity"); /* * Grab a reference so the node cannot * be reclaimed before we send the frame. * ieee80211_send_nulldata understands * we've done this and reclaims the * ref for us as needed. */ /* XXX fix this (not required anymore). */ ieee80211_ref_node(ni); /* XXX useless */ ieee80211_send_nulldata(ni); /* XXX stat? */ return; } } if ((vap->iv_flags_ext & IEEE80211_FEXT_INACT) && ni->ni_inact <= 0) { IEEE80211_NOTE(vap, IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni, "station timed out due to inactivity " "(refcnt %u)", ieee80211_node_refcnt(ni)); /* * Send a deauthenticate frame and drop the station. * This is somewhat complicated due to reference counts * and locking. At this point a station will typically * have a reference count of 2. ieee80211_node_leave * will do a "free" of the node which will drop the * reference count. But in the meantime a reference * wil be held by the deauth frame. The actual reclaim * of the node will happen either after the tx is * completed or by ieee80211_node_leave. */ if (ni->ni_associd != 0) { IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_AUTH_EXPIRE); } ieee80211_node_leave(ni); vap->iv_stats.is_node_timeout++; } } /* * Timeout inactive stations and do related housekeeping. */ static void ieee80211_timeout_stations(struct ieee80211com *ic) { struct ieee80211_node_table *nt = &ic->ic_sta; ieee80211_iterate_nodes(nt, timeout_stations, NULL); } /* * Aggressively reclaim resources. This should be used * only in a critical situation to reclaim mbuf resources. */ void ieee80211_drain(struct ieee80211com *ic) { struct ieee80211_node_table *nt = &ic->ic_sta; struct ieee80211vap *vap; struct ieee80211_node *ni; IEEE80211_NODE_LOCK(nt); TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { /* * Ignore entries for which have yet to receive an * authentication frame. These are transient and * will be reclaimed when the last reference to them * goes away (when frame xmits complete). */ vap = ni->ni_vap; /* * Only process stations when in RUN state. This * insures, for example, that we don't timeout an * inactive station during CAC. Note that CSA state * is actually handled in ieee80211_node_timeout as * it applies to more than timeout processing. */ if (vap->iv_state != IEEE80211_S_RUN) continue; /* XXX can vap be NULL? */ if ((vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_STA) && (ni->ni_flags & IEEE80211_NODE_AREF) == 0) continue; /* * Free fragments. * XXX doesn't belong here, move to node_drain */ if (ni->ni_rxfrag[0] != NULL) { m_freem(ni->ni_rxfrag[0]); ni->ni_rxfrag[0] = NULL; } /* * Drain resources held by the station. */ ic->ic_node_drain(ni); } IEEE80211_NODE_UNLOCK(nt); } /* * Per-ieee80211vap inactivity timer callback. */ static void ieee80211_vap_timeout(struct ieee80211vap *vap) { IEEE80211_LOCK_ASSERT(vap->iv_ic); ieee80211_vap_erp_timeout(vap); ieee80211_ht_timeout(vap); ieee80211_vht_timeout(vap); } /* * Per-ieee80211com inactivity timer callback. */ void ieee80211_node_timeout(void *arg) { struct ieee80211com *ic = arg; struct ieee80211vap *vap; /* * Defer timeout processing if a channel switch is pending. * We typically need to be mute so not doing things that * might generate frames is good to handle in one place. * Suppressing the station timeout processing may extend the * lifetime of inactive stations (by not decrementing their * idle counters) but this should be ok unless the CSA is * active for an unusually long time. */ if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { ieee80211_scan_timeout(ic); ieee80211_timeout_stations(ic); ieee80211_ageq_age(&ic->ic_stageq, IEEE80211_INACT_WAIT); IEEE80211_LOCK(ic); TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) ieee80211_vap_timeout(vap); IEEE80211_UNLOCK(ic); } callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz, ieee80211_node_timeout, ic); } /* * The same as ieee80211_iterate_nodes(), but for one vap only. */ int ieee80211_iterate_nodes_vap(struct ieee80211_node_table *nt, struct ieee80211vap *vap, ieee80211_iter_func *f, void *arg) { struct ieee80211_node **ni_arr; struct ieee80211_node *ni; size_t size; int count, i; /* * Iterate over the node table and save an array of ref'ed nodes. * * This is separated out from calling the actual node function so that * no LORs will occur. */ IEEE80211_NODE_LOCK(nt); count = nt->nt_count; size = count * sizeof(struct ieee80211_node *); ni_arr = (struct ieee80211_node **) IEEE80211_MALLOC(size, M_80211_NODE, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (ni_arr == NULL) { IEEE80211_NODE_UNLOCK(nt); return (ENOMEM); } i = 0; TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { if (vap != NULL && ni->ni_vap != vap) continue; KASSERT(i < count, ("node array overflow (vap %p, i %d, count %d)\n", vap, i, count)); ni_arr[i] = ieee80211_ref_node(ni); i++; } IEEE80211_NODE_UNLOCK(nt); for (i = 0; i < count; i++) { if (ni_arr[i] == NULL) /* end of the list */ break; (*f)(arg, ni_arr[i]); /* ieee80211_free_node() locks by itself */ ieee80211_free_node(ni_arr[i]); } IEEE80211_FREE(ni_arr, M_80211_NODE); return (0); } /* * Just a wrapper, so we don't have to change every ieee80211_iterate_nodes() * reference in the source. */ void ieee80211_iterate_nodes(struct ieee80211_node_table *nt, ieee80211_iter_func *f, void *arg) { /* XXX no way to pass error to the caller. */ (void) ieee80211_iterate_nodes_vap(nt, NULL, f, arg); } void ieee80211_dump_node(struct ieee80211_node_table *nt __unused, struct ieee80211_node *ni) { printf("%p: mac %s refcnt %d\n", ni, ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni)); printf("\tauthmode %u flags 0x%x\n", ni->ni_authmode, ni->ni_flags); printf("\tassocid 0x%x txpower %u vlan %u\n", ni->ni_associd, ni->ni_txpower, ni->ni_vlan); printf("\ttxseq %u rxseq %u fragno %u rxfragstamp %u\n", ni->ni_txseqs[IEEE80211_NONQOS_TID], ni->ni_rxseqs[IEEE80211_NONQOS_TID] >> IEEE80211_SEQ_SEQ_SHIFT, ni->ni_rxseqs[IEEE80211_NONQOS_TID] & IEEE80211_SEQ_FRAG_MASK, ni->ni_rxfragstamp); printf("\trssi %d noise %d intval %u capinfo 0x%x\n", node_getrssi(ni), ni->ni_noise, ni->ni_intval, ni->ni_capinfo); printf("\tbssid %s essid \"%.*s\" channel %u:0x%x\n", ether_sprintf(ni->ni_bssid), ni->ni_esslen, ni->ni_essid, (ni->ni_chan != IEEE80211_CHAN_ANYC) ? ni->ni_chan->ic_freq : 0, (ni->ni_chan != IEEE80211_CHAN_ANYC) ? ni->ni_chan->ic_flags : 0); printf("\tinact %u inact_reload %u txrate %u\n", ni->ni_inact, ni->ni_inact_reload, ni->ni_txrate); printf("\thtcap %x htparam %x htctlchan %u ht2ndchan %u\n", ni->ni_htcap, ni->ni_htparam, ni->ni_htctlchan, ni->ni_ht2ndchan); printf("\thtopmode %x htstbc %x htchw %d (%s)\n", ni->ni_htopmode, ni->ni_htstbc, ni->ni_chw, ieee80211_ni_chw_to_str(ni->ni_chw)); printf("\tvhtcap %x freq1 %d freq2 %d vhtbasicmcs %x\n", ni->ni_vhtcap, (int) ni->ni_vht_chan1, (int) ni->ni_vht_chan2, (int) ni->ni_vht_basicmcs); /* XXX VHT state */ } void ieee80211_dump_nodes(struct ieee80211_node_table *nt) { ieee80211_iterate_nodes(nt, (ieee80211_iter_func *) ieee80211_dump_node, nt); } /* * Iterate over the VAPs and update their ERP beacon IEs. * * Note this must be called from the deferred ERP update task paths. */ void ieee80211_notify_erp_locked(struct ieee80211com *ic) { struct ieee80211vap *vap; IEEE80211_LOCK_ASSERT(ic); TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if (vap->iv_opmode == IEEE80211_M_HOSTAP) ieee80211_beacon_notify(vap, IEEE80211_BEACON_ERP); } /* * Handle a station joining an 11g network. */ static void ieee80211_node_join_11g(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; IEEE80211_LOCK_ASSERT(ic); /* * Station isn't capable of short slot time. Bump * the count of long slot time stations and disable * use of short slot time. Note that the actual switch * over to long slot time use may not occur until the * next beacon transmission (per sec. 7.3.1.4 of 11g). */ if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { vap->iv_longslotsta++; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, "station needs long slot time, count %d", vap->iv_longslotsta); /* * XXX TODO: this may need all VAPs checked! */ if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) { /* * Don't force slot time when switched to turbo * mode as non-ERP stations won't be present; this * need only be done when on the normal G channel. */ ieee80211_vap_set_shortslottime(vap, 0); } } /* * If the new station is not an ERP station * then bump the counter and enable protection * if configured. */ if (!ieee80211_iserp_rateset(&ni->ni_rates)) { vap->iv_nonerpsta++; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, "station is !ERP, %d non-ERP stations associated", vap->iv_nonerpsta); /* * If station does not support short preamble * then we must enable use of Barker preamble. */ if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) { IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, "%s", "station needs long preamble"); vap->iv_flags |= IEEE80211_F_USEBARKER; vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE; ieee80211_vap_update_preamble(vap); } /* * If protection is configured and this is the first * indication we should use protection, enable it. */ if (vap->iv_protmode != IEEE80211_PROT_NONE && vap->iv_nonerpsta == 1 && (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, "%s: enable use of protection\n", __func__); vap->iv_flags |= IEEE80211_F_USEPROT; ieee80211_vap_update_erp_protmode(vap); } } else ni->ni_flags |= IEEE80211_NODE_ERP; } void ieee80211_node_join(struct ieee80211_node *ni, int resp) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; int newassoc; if (ni->ni_associd == 0) { uint16_t aid; KASSERT(vap->iv_aid_bitmap != NULL, ("no aid bitmap")); /* * It would be good to search the bitmap * more efficiently, but this will do for now. */ for (aid = 1; aid < vap->iv_max_aid; aid++) { if (!IEEE80211_AID_ISSET(vap, aid)) break; } if (aid >= vap->iv_max_aid) { IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_TOOMANY); ieee80211_node_leave(ni); return; } ni->ni_associd = aid | 0xc000; ni->ni_jointime = time_uptime; IEEE80211_LOCK(ic); IEEE80211_AID_SET(vap, ni->ni_associd); vap->iv_sta_assoc++; if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) ieee80211_ht_node_join(ni); if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan)) ieee80211_vht_node_join(ni); if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) ieee80211_node_join_11g(ni); IEEE80211_UNLOCK(ic); newassoc = 1; } else newassoc = 0; /* * XXX VHT - should log VHT channel width, etc */ IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, "station associated at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s%s", IEEE80211_NODE_AID(ni), vap->iv_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long", vap->iv_flags & IEEE80211_F_SHSLOT ? "short" : "long", vap->iv_flags & IEEE80211_F_USEPROT ? ", protection" : "", ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", /* XXX update for VHT string */ ni->ni_flags & IEEE80211_NODE_HT ? (ni->ni_chw == IEEE80211_STA_RX_BW_40 ? ", HT40" : ", HT20") : "", ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", ni->ni_flags & IEEE80211_NODE_AMSDU ? " (+AMSDU)" : "", ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? ", fast-frames" : "", IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? ", turbo" : "" ); ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); /* give driver a chance to setup state like ni_txrate */ if (ic->ic_newassoc != NULL) ic->ic_newassoc(ni, newassoc); IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS); /* tell the authenticator about new station */ if (vap->iv_auth->ia_node_join != NULL) vap->iv_auth->ia_node_join(ni); ieee80211_notify_node_join(ni, resp == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); } static void disable_protection(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; KASSERT(vap->iv_nonerpsta == 0 && (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0, ("%d non ERP stations, flags 0x%x", vap->iv_nonerpsta, vap->iv_flags_ext)); vap->iv_flags &= ~IEEE80211_F_USEPROT; /* XXX verify mode? */ if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) { vap->iv_flags |= IEEE80211_F_SHPREAMBLE; vap->iv_flags &= ~IEEE80211_F_USEBARKER; } ieee80211_vap_update_erp_protmode(vap); ieee80211_vap_update_preamble(vap); } /* * Handle a station leaving an 11g network. */ static void ieee80211_node_leave_11g(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; IEEE80211_LOCK_ASSERT(ic); KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan), ("not in 11g, bss %u:0x%x", ic->ic_bsschan->ic_freq, ic->ic_bsschan->ic_flags)); /* * If a long slot station do the slot time bookkeeping. */ if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) { KASSERT(vap->iv_longslotsta > 0, ("bogus long slot station count %d", vap->iv_longslotsta)); vap->iv_longslotsta--; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, "long slot time station leaves, count now %d", vap->iv_longslotsta); /* * XXX TODO: this may need all VAPs checked! */ if (vap->iv_longslotsta == 0) { /* * Re-enable use of short slot time if supported * and not operating in IBSS mode (per spec). */ if ((ic->ic_caps & IEEE80211_C_SHSLOT) && ic->ic_opmode != IEEE80211_M_IBSS) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, "%s: re-enable use of short slot time\n", __func__); ieee80211_vap_set_shortslottime(vap, 1); } } } /* * If a non-ERP station do the protection-related bookkeeping. */ if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) { KASSERT(vap->iv_nonerpsta > 0, ("bogus non-ERP station count %d", vap->iv_nonerpsta)); vap->iv_nonerpsta--; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_ASSOC, ni, "non-ERP station leaves, count now %d%s", vap->iv_nonerpsta, (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) ? " (non-ERP sta present)" : ""); if (vap->iv_nonerpsta == 0 && (vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) == 0) { IEEE80211_DPRINTF(ni->ni_vap, IEEE80211_MSG_ASSOC, "%s: disable use of protection\n", __func__); disable_protection(vap); } } } /* * Time out presence of an overlapping bss with non-ERP * stations. When operating in hostap mode we listen for * beacons from other stations and if we identify a non-ERP * station is present we enable protection. To identify * when all non-ERP stations are gone we time out this * condition. */ static void ieee80211_vap_erp_timeout(struct ieee80211vap *vap) { IEEE80211_LOCK_ASSERT(vap->iv_ic); if ((vap->iv_flags_ext & IEEE80211_FEXT_NONERP_PR) && ieee80211_time_after(ticks, vap->iv_lastnonerp + IEEE80211_NONERP_PRESENT_AGE)) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC, "%s", "age out non-ERP sta present on channel"); vap->iv_flags_ext &= ~IEEE80211_FEXT_NONERP_PR; if (vap->iv_nonerpsta == 0) disable_protection(vap); } } /* * Handle bookkeeping for station deauthentication/disassociation * when operating as an ap. */ void ieee80211_node_leave(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_node_table *nt = ni->ni_table; IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni, "station with aid %d leaves", IEEE80211_NODE_AID(ni)); KASSERT(vap->iv_opmode != IEEE80211_M_STA, ("unexpected operating mode %u", vap->iv_opmode)); /* * If node wasn't previously associated all * we need to do is reclaim the reference. */ /* XXX ibss mode bypasses 11g and notification */ if (ni->ni_associd == 0) goto done; /* * Tell the authenticator the station is leaving. * Note that we must do this before yanking the * association id as the authenticator uses the * associd to locate it's state block. */ if (vap->iv_auth->ia_node_leave != NULL) vap->iv_auth->ia_node_leave(ni); IEEE80211_LOCK(ic); IEEE80211_AID_CLR(vap, ni->ni_associd); vap->iv_sta_assoc--; if (IEEE80211_IS_CHAN_VHT(ic->ic_bsschan)) ieee80211_vht_node_leave(ni); if (IEEE80211_IS_CHAN_HT(ic->ic_bsschan)) ieee80211_ht_node_leave(ni); if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) && IEEE80211_IS_CHAN_FULL(ic->ic_bsschan)) ieee80211_node_leave_11g(ni); IEEE80211_UNLOCK(ic); /* * Cleanup station state. In particular clear various * state that might otherwise be reused if the node * is reused before the reference count goes to zero * (and memory is reclaimed). */ ieee80211_sta_leave(ni); done: /* * Remove the node from any table it's recorded in and * drop the caller's reference. Removal from the table * is important to insure the node is not reprocessed * for inactivity. */ if (nt != NULL) { IEEE80211_NODE_LOCK(nt); node_reclaim(nt, ni); IEEE80211_NODE_UNLOCK(nt); } else ieee80211_free_node(ni); } struct rssiinfo { int rssi_samples; uint32_t rssi_total; }; static void get_hostap_rssi(void *arg, struct ieee80211_node *ni) { struct rssiinfo *info = arg; struct ieee80211vap *vap = ni->ni_vap; int8_t rssi; /* only associated stations */ if (ni->ni_associd == 0) return; rssi = vap->iv_ic->ic_node_getrssi(ni); if (rssi != 0) { info->rssi_samples++; info->rssi_total += rssi; } } static void get_adhoc_rssi(void *arg, struct ieee80211_node *ni) { struct rssiinfo *info = arg; struct ieee80211vap *vap = ni->ni_vap; int8_t rssi; /* only neighbors */ /* XXX check bssid */ if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0) return; rssi = vap->iv_ic->ic_node_getrssi(ni); if (rssi != 0) { info->rssi_samples++; info->rssi_total += rssi; } } #ifdef IEEE80211_SUPPORT_MESH static void get_mesh_rssi(void *arg, struct ieee80211_node *ni) { struct rssiinfo *info = arg; struct ieee80211vap *vap = ni->ni_vap; int8_t rssi; /* only neighbors that peered successfully */ if (ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) return; rssi = vap->iv_ic->ic_node_getrssi(ni); if (rssi != 0) { info->rssi_samples++; info->rssi_total += rssi; } } #endif /* IEEE80211_SUPPORT_MESH */ int8_t ieee80211_getrssi(struct ieee80211vap *vap) { #define NZ(x) ((x) == 0 ? 1 : (x)) struct ieee80211com *ic = vap->iv_ic; struct rssiinfo info; info.rssi_total = 0; info.rssi_samples = 0; switch (vap->iv_opmode) { case IEEE80211_M_IBSS: /* average of all ibss neighbors */ case IEEE80211_M_AHDEMO: /* average of all neighbors */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_adhoc_rssi, &info); break; case IEEE80211_M_HOSTAP: /* average of all associated stations */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_hostap_rssi, &info); break; #ifdef IEEE80211_SUPPORT_MESH case IEEE80211_M_MBSS: /* average of all mesh neighbors */ ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_mesh_rssi, &info); break; #endif case IEEE80211_M_MONITOR: /* XXX */ case IEEE80211_M_STA: /* use stats from associated ap */ default: if (vap->iv_bss != NULL) info.rssi_total = ic->ic_node_getrssi(vap->iv_bss); info.rssi_samples = 1; break; } return info.rssi_total / NZ(info.rssi_samples); #undef NZ } void ieee80211_getsignal(struct ieee80211vap *vap, int8_t *rssi, int8_t *noise) { if (vap->iv_bss == NULL) /* NB: shouldn't happen */ return; vap->iv_ic->ic_node_getsignal(vap->iv_bss, rssi, noise); /* for non-station mode return avg'd rssi accounting */ if (vap->iv_opmode != IEEE80211_M_STA) *rssi = ieee80211_getrssi(vap); } + +uint8_t +ieee80211_node_get_txrate_dot11rate(struct ieee80211_node *ni) +{ + return (ni->ni_txrate); +} + +void +ieee80211_node_set_txrate_dot11rate(struct ieee80211_node *ni, + uint8_t dot11Rate) +{ + ni->ni_txrate = dot11Rate; +} + +void +ieee80211_node_set_txrate_ht_mcsrate(struct ieee80211_node *ni, + uint8_t mcs) +{ + KASSERT(mcs <= 76, ("%s: MCS is not 0..76 (%d)", __func__, mcs)); + if (mcs > 76) { + ic_printf(ni->ni_ic, "%s: invalid MCS (%d)\n", __func__, mcs); + return; + } + ni->ni_txrate = IEEE80211_RATE_MCS | mcs; +} + + +/* + * @brief Fetch the transmit rate for the given node in kbit/s. + * + * This currently only works for CCK, OFDM and HT rates. + * + * @param ni struct ieee80211_node * to lookup + * @returns current transmit rate in kbit/s + */ +uint32_t +ieee80211_node_get_txrate_kbit(struct ieee80211_node *ni) +{ + uint32_t mbps; + + if (ni->ni_txrate & IEEE80211_RATE_MCS) { + const struct ieee80211_mcs_rates *mcs = + &ieee80211_htrates[ni->ni_txrate & ~IEEE80211_RATE_MCS]; + + if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) { + /* Note: these are in 1/2Mbit/s units */ + if (ni->ni_flags & IEEE80211_NODE_SGI40) + mbps = mcs->ht40_rate_800ns; + else + mbps = mcs->ht40_rate_400ns; + } else { + if (ni->ni_flags & IEEE80211_NODE_SGI20) + mbps = mcs->ht20_rate_800ns; + else + mbps = mcs->ht20_rate_400ns; + } + } else + /* Note: CCK/OFDM dot11rate entries are in 1/2Mbit/s units */ + mbps = ni->ni_txrate; + + /* + * Note; 'mbps' in 1/2 Mbit/s units so *500 to make it in kbit/s units. + */ + return (mbps * 500); +} diff --git a/sys/net80211/ieee80211_node.h b/sys/net80211/ieee80211_node.h index 0039c743544c..722f3d54a00b 100644 --- a/sys/net80211/ieee80211_node.h +++ b/sys/net80211/ieee80211_node.h @@ -1,501 +1,507 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _NET80211_IEEE80211_NODE_H_ #define _NET80211_IEEE80211_NODE_H_ #include /* for ieee80211_nodestats */ #include /* for aggregation state */ /* * Each ieee80211com instance has a single timer that fires every * IEEE80211_INACT_WAIT seconds to handle "inactivity processing". * This is used to do node inactivity processing when operating * as an AP, adhoc or mesh mode. For inactivity processing each node * has a timeout set in its ni_inact field that is decremented * on each timeout and the node is reclaimed when the counter goes * to zero. We use different inactivity timeout values depending * on whether the node is associated and authorized (either by * 802.1x or open/shared key authentication) or associated but yet * to be authorized. The latter timeout is shorter to more aggressively * reclaim nodes that leave part way through the 802.1x exchange. */ #define IEEE80211_INACT_WAIT 15 /* inactivity interval (secs) */ #define IEEE80211_INACT_INIT (30/IEEE80211_INACT_WAIT) /* initial */ #define IEEE80211_INACT_AUTH (180/IEEE80211_INACT_WAIT) /* associated but not authorized */ #define IEEE80211_INACT_RUN (300/IEEE80211_INACT_WAIT) /* authorized */ #define IEEE80211_INACT_PROBE (30/IEEE80211_INACT_WAIT) /* probe */ #define IEEE80211_INACT_SCAN (300/IEEE80211_INACT_WAIT) /* scanned */ #define IEEE80211_TRANS_WAIT 2 /* mgt frame tx timer (secs) */ /* threshold for aging overlapping non-ERP bss */ #define IEEE80211_NONERP_PRESENT_AGE msecs_to_ticks(60*1000) #define IEEE80211_NODE_HASHSIZE 32 /* NB: hash size must be pow2 */ /* simple hash is enough for variation of macaddr */ #define IEEE80211_NODE_HASH(ic, addr) \ (((const uint8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \ IEEE80211_NODE_HASHSIZE) struct ieee80211_node_table; struct ieee80211com; struct ieee80211vap; struct ieee80211_scanparams; /* * Information element (IE) ``blob''. We use this structure * to capture management frame payloads that need to be * retained. Information elements within the payload that * we need to consult have references recorded. */ struct ieee80211_ies { /* the following are either NULL or point within data */ uint8_t *wpa_ie; /* captured WPA ie */ uint8_t *rsn_ie; /* captured RSN ie */ uint8_t *wme_ie; /* captured WME ie */ uint8_t *ath_ie; /* captured Atheros ie */ uint8_t *htcap_ie; /* captured HTCAP ie */ uint8_t *htinfo_ie; /* captured HTINFO ie */ uint8_t *tdma_ie; /* captured TDMA ie */ uint8_t *meshid_ie; /* captured MESH ID ie */ uint8_t *vhtcap_ie; /* captured VHTCAP ie */ uint8_t *vhtopmode_ie; /* captured VHTOPMODE ie */ uint8_t *vhtpwrenv_ie; /* captured VHTPWRENV ie */ uint8_t *apchanrep_ie; /* captured APCHANREP ie */ uint8_t *bssload_ie; /* captured BSSLOAD ie */ uint8_t *spare[4]; /* NB: these must be the last members of this structure */ uint8_t *data; /* frame data > 802.11 header */ int len; /* data size in bytes */ }; /* * 802.11s (Mesh) Peer Link FSM state. */ enum ieee80211_mesh_mlstate { IEEE80211_NODE_MESH_IDLE = 0, IEEE80211_NODE_MESH_OPENSNT = 1, /* open frame sent */ IEEE80211_NODE_MESH_OPENRCV = 2, /* open frame received */ IEEE80211_NODE_MESH_CONFIRMRCV = 3, /* confirm frame received */ IEEE80211_NODE_MESH_ESTABLISHED = 4, /* link established */ IEEE80211_NODE_MESH_HOLDING = 5, /* link closing */ }; #define IEEE80211_MESH_MLSTATE_BITS \ "\20\1IDLE\2OPENSNT\2OPENRCV\3CONFIRMRCV\4ESTABLISHED\5HOLDING" /* * This structure is shared with LinuxKPI 802.11 code describing up-to * which channel width the station can receive. * Rather than using hardcoded MHz values for the channel width use an enum with * flags. This allows us to keep the uint8_t slot for ni_chw in * struct ieee80211_node and means we do not have to sync to the value for * LinuxKPI. * * NB: BW_20 needs to 0 and values need to be sorted! Cannot make it * bitfield-alike for use with %b. */ enum ieee80211_sta_rx_bw { IEEE80211_STA_RX_BW_20 = 0x00, IEEE80211_STA_RX_BW_40, IEEE80211_STA_RX_BW_80, IEEE80211_STA_RX_BW_160, IEEE80211_STA_RX_BW_320, } __packed; static inline const char * ieee80211_ni_chw_to_str(enum ieee80211_sta_rx_bw bw) { switch (bw) { case IEEE80211_STA_RX_BW_20: return ("BW_20"); case IEEE80211_STA_RX_BW_40: return ("BW_40"); case IEEE80211_STA_RX_BW_80: return ("BW_80"); case IEEE80211_STA_RX_BW_160: return ("BW_160"); case IEEE80211_STA_RX_BW_320: return ("BW_320"); } } /* * Node specific information. Note that drivers are expected * to derive from this structure to add device-specific per-node * state. This is done by overriding the ic_node_* methods in * the ieee80211com structure. */ struct ieee80211_node { struct ieee80211vap *ni_vap; /* associated vap */ struct ieee80211com *ni_ic; /* copy from vap to save deref*/ struct ieee80211_node_table *ni_table; /* NB: may be NULL */ TAILQ_ENTRY(ieee80211_node) ni_list; /* list of all nodes */ LIST_ENTRY(ieee80211_node) ni_hash; /* hash collision list */ u_int ni_refcnt; /* count of held references */ u_int ni_flags; #define IEEE80211_NODE_AUTH 0x000001 /* authorized for data */ #define IEEE80211_NODE_QOS 0x000002 /* QoS enabled */ #define IEEE80211_NODE_ERP 0x000004 /* ERP enabled */ /* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */ #define IEEE80211_NODE_PWR_MGT 0x000010 /* power save mode enabled */ #define IEEE80211_NODE_AREF 0x000020 /* authentication ref held */ #define IEEE80211_NODE_HT 0x000040 /* HT enabled */ #define IEEE80211_NODE_HTCOMPAT 0x000080 /* HT setup w/ vendor OUI's */ #define IEEE80211_NODE_WPS 0x000100 /* WPS association */ #define IEEE80211_NODE_TSN 0x000200 /* TSN association */ #define IEEE80211_NODE_AMPDU_RX 0x000400 /* AMPDU rx enabled */ #define IEEE80211_NODE_AMPDU_TX 0x000800 /* AMPDU tx enabled */ #define IEEE80211_NODE_MIMO_PS 0x001000 /* MIMO power save enabled */ #define IEEE80211_NODE_MIMO_RTS 0x002000 /* send RTS in MIMO PS */ #define IEEE80211_NODE_RIFS 0x004000 /* RIFS enabled */ #define IEEE80211_NODE_SGI20 0x008000 /* Short GI in HT20 enabled */ #define IEEE80211_NODE_SGI40 0x010000 /* Short GI in HT40 enabled */ #define IEEE80211_NODE_ASSOCID 0x020000 /* xmit requires associd */ #define IEEE80211_NODE_AMSDU_RX 0x040000 /* AMSDU rx enabled */ #define IEEE80211_NODE_AMSDU_TX 0x080000 /* AMSDU tx enabled */ #define IEEE80211_NODE_VHT 0x100000 /* VHT enabled */ #define IEEE80211_NODE_LDPC 0x200000 /* LDPC enabled */ #define IEEE80211_NODE_UAPSD 0x400000 /* U-APSD power save enabled */ uint16_t ni_associd; /* association ID */ uint16_t ni_vlan; /* vlan tag */ uint16_t ni_txpower; /* current transmit power */ uint8_t ni_authmode; /* authentication algorithm */ uint8_t ni_ath_flags; /* Atheros feature flags */ /* NB: These must have the same values as IEEE80211_ATHC_* */ #define IEEE80211_NODE_TURBOP 0x0001 /* Turbo prime enable */ #define IEEE80211_NODE_COMP 0x0002 /* Compresssion enable */ #define IEEE80211_NODE_FF 0x0004 /* Fast Frame capable */ #define IEEE80211_NODE_XR 0x0008 /* Atheros WME enable */ #define IEEE80211_NODE_AR 0x0010 /* AR capable */ #define IEEE80211_NODE_BOOST 0x0080 /* Dynamic Turbo boosted */ uint16_t ni_ath_defkeyix;/* Atheros def key index */ const struct ieee80211_txparam *ni_txparms; uint32_t ni_jointime; /* time of join (secs) */ uint32_t *ni_challenge; /* shared-key challenge */ struct ieee80211_ies ni_ies; /* captured ie's */ /* tx seq per-tid */ ieee80211_seq ni_txseqs[IEEE80211_TID_SIZE]; /* rx seq previous per-tid*/ ieee80211_seq ni_rxseqs[IEEE80211_TID_SIZE]; uint32_t ni_rxfragstamp; /* time stamp of last rx frag */ struct mbuf *ni_rxfrag[3]; /* rx frag reassembly */ struct ieee80211_key ni_ucastkey; /* unicast key */ /* hardware */ uint32_t ni_avgrssi; /* recv ssi state */ int8_t ni_noise; /* noise floor */ /* mimo statistics */ uint32_t ni_mimo_rssi_ctl[IEEE80211_MAX_CHAINS]; uint32_t ni_mimo_rssi_ext[IEEE80211_MAX_CHAINS]; uint8_t ni_mimo_noise_ctl[IEEE80211_MAX_CHAINS]; uint8_t ni_mimo_noise_ext[IEEE80211_MAX_CHAINS]; uint8_t ni_mimo_chains; /* header */ uint8_t ni_macaddr[IEEE80211_ADDR_LEN]; uint8_t ni_bssid[IEEE80211_ADDR_LEN]; /* beacon, probe response */ union { uint8_t data[8]; u_int64_t tsf; } ni_tstamp; /* from last rcv'd beacon */ uint16_t ni_intval; /* beacon interval */ uint16_t ni_capinfo; /* capabilities */ uint8_t ni_esslen; uint8_t ni_essid[IEEE80211_NWID_LEN]; struct ieee80211_rateset ni_rates; /* negotiated rate set */ struct ieee80211_channel *ni_chan; uint16_t ni_fhdwell; /* FH only */ uint8_t ni_fhindex; /* FH only */ uint16_t ni_erp; /* ERP from beacon/probe resp */ uint16_t ni_timoff; /* byte offset to TIM ie */ uint8_t ni_dtim_period; /* DTIM period */ uint8_t ni_dtim_count; /* DTIM count for last bcn */ /* 11s state */ uint8_t ni_meshidlen; uint8_t ni_meshid[IEEE80211_MESHID_LEN]; enum ieee80211_mesh_mlstate ni_mlstate; /* peering management state */ uint16_t ni_mllid; /* link local ID */ uint16_t ni_mlpid; /* link peer ID */ struct callout ni_mltimer; /* link mesh timer */ uint8_t ni_mlrcnt; /* link mesh retry counter */ uint8_t ni_mltval; /* link mesh timer value */ struct callout ni_mlhtimer; /* link mesh backoff timer */ uint8_t ni_mlhcnt; /* link mesh holding counter */ /* 11n state */ uint16_t ni_htcap; /* HT capabilities */ uint8_t ni_htparam; /* HT params */ uint8_t ni_htctlchan; /* HT control channel */ uint8_t ni_ht2ndchan; /* HT 2nd channel */ uint8_t ni_htopmode; /* HT operating mode */ uint8_t ni_htstbc; /* HT */ enum ieee80211_sta_rx_bw ni_chw; /* negotiated channel width */ struct ieee80211_htrateset ni_htrates; /* negotiated ht rate set */ struct ieee80211_tx_ampdu ni_tx_ampdu[WME_NUM_TID]; struct ieee80211_rx_ampdu ni_rx_ampdu[WME_NUM_TID]; /* VHT state */ uint32_t ni_vhtcap; uint16_t ni_vht_basicmcs; uint16_t ni_vht_pad2; struct ieee80211_vht_mcs_info ni_vht_mcsinfo; uint8_t ni_vht_chan1; /* 20/40/80/160 - VHT chan1 */ uint8_t ni_vht_chan2; /* 80+80 - VHT chan2 */ uint8_t ni_vht_chanwidth; /* IEEE80211_VHT_CHANWIDTH_ */ uint8_t ni_vht_pad1; uint32_t ni_vht_spare[8]; /* fast-frames state */ struct mbuf * ni_tx_superg[WME_NUM_TID]; /* others */ short ni_inact; /* inactivity mark count */ short ni_inact_reload;/* inactivity reload value */ int ni_txrate; /* legacy rate/MCS */ struct ieee80211_psq ni_psq; /* power save queue */ struct ieee80211_nodestats ni_stats; /* per-node statistics */ struct ieee80211vap *ni_wdsvap; /* associated WDS vap */ void *ni_rctls; /* private ratectl state */ /* quiet time IE state for the given node */ uint32_t ni_quiet_ie_set; /* Quiet time IE was seen */ struct ieee80211_quiet_ie ni_quiet_ie; /* last seen quiet IE */ /* U-APSD */ uint8_t ni_uapsd; /* U-APSD per-node flags matching WMM STA QoS Info field */ void *ni_drv_data; /* driver specific */ uint64_t ni_spare[3]; }; MALLOC_DECLARE(M_80211_NODE); MALLOC_DECLARE(M_80211_NODE_IE); #define IEEE80211_NODE_ATH (IEEE80211_NODE_FF | IEEE80211_NODE_TURBOP) #define IEEE80211_NODE_AMPDU \ (IEEE80211_NODE_AMPDU_RX | IEEE80211_NODE_AMPDU_TX) #define IEEE80211_NODE_AMSDU \ (IEEE80211_NODE_AMSDU_RX | IEEE80211_NODE_AMSDU_TX) #define IEEE80211_NODE_HT_ALL \ (IEEE80211_NODE_HT | IEEE80211_NODE_HTCOMPAT | \ IEEE80211_NODE_AMPDU | IEEE80211_NODE_AMSDU | \ IEEE80211_NODE_MIMO_PS | IEEE80211_NODE_MIMO_RTS | \ IEEE80211_NODE_RIFS | IEEE80211_NODE_SGI20 | IEEE80211_NODE_SGI40) #define IEEE80211_NODE_BITS \ "\20\1AUTH\2QOS\3ERP\5PWR_MGT\6AREF\7HT\10HTCOMPAT\11WPS\12TSN" \ "\13AMPDU_RX\14AMPDU_TX\15MIMO_PS\16MIMO_RTS\17RIFS\20SGI20\21SGI40" \ "\22ASSOCID" #define IEEE80211_NODE_AID(ni) IEEE80211_AID(ni->ni_associd) #define IEEE80211_NODE_STAT(ni,stat) (ni->ni_stats.ns_##stat++) #define IEEE80211_NODE_STAT_ADD(ni,stat,v) (ni->ni_stats.ns_##stat += v) #define IEEE80211_NODE_STAT_SET(ni,stat,v) (ni->ni_stats.ns_##stat = v) /* * Filtered rssi calculation support. The receive rssi is maintained * as an average over the last 10 frames received using a low pass filter * (all frames for now, possibly need to be more selective). Calculations * are designed such that a good compiler can optimize them. The avg * rssi state should be initialized to IEEE80211_RSSI_DUMMY_MARKER and * each sample incorporated with IEEE80211_RSSI_LPF. Use IEEE80211_RSSI_GET * to extract the current value. * * Note that we assume rssi data are in the range [-127..127] and we * discard values <-20. This is consistent with assumptions throughout * net80211 that signal strength data are in .5 dBm units relative to * the current noise floor (linear, not log). */ #define IEEE80211_RSSI_LPF_LEN 10 #define IEEE80211_RSSI_DUMMY_MARKER 127 /* NB: pow2 to optimize out * and / */ #define IEEE80211_RSSI_EP_MULTIPLIER (1<<7) #define IEEE80211_RSSI_IN(x) ((x) * IEEE80211_RSSI_EP_MULTIPLIER) #define _IEEE80211_RSSI_LPF(x, y, len) \ (((x) != IEEE80211_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y)) #define IEEE80211_RSSI_LPF(x, y) do { \ if ((y) >= -20) { \ x = _IEEE80211_RSSI_LPF((x), IEEE80211_RSSI_IN((y)), \ IEEE80211_RSSI_LPF_LEN); \ } \ } while (0) #define IEEE80211_RSSI_EP_RND(x, mul) \ ((((x) % (mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul)) #define IEEE80211_RSSI_GET(x) \ IEEE80211_RSSI_EP_RND(x, IEEE80211_RSSI_EP_MULTIPLIER) void ieee80211_node_attach(struct ieee80211com *); void ieee80211_node_lateattach(struct ieee80211com *); void ieee80211_node_detach(struct ieee80211com *); void ieee80211_node_vattach(struct ieee80211vap *); void ieee80211_node_latevattach(struct ieee80211vap *); void ieee80211_node_vdetach(struct ieee80211vap *); static __inline int ieee80211_node_is_authorized(const struct ieee80211_node *ni) { return (ni->ni_flags & IEEE80211_NODE_AUTH); } void ieee80211_node_authorize(struct ieee80211_node *); void ieee80211_node_unauthorize(struct ieee80211_node *); void ieee80211_node_setuptxparms(struct ieee80211_node *); void ieee80211_node_set_chan(struct ieee80211_node *, struct ieee80211_channel *); void ieee80211_create_ibss(struct ieee80211vap*, struct ieee80211_channel *); void ieee80211_reset_bss(struct ieee80211vap *); void ieee80211_sync_curchan(struct ieee80211com *); void ieee80211_setupcurchan(struct ieee80211com *, struct ieee80211_channel *); void ieee80211_setcurchan(struct ieee80211com *, struct ieee80211_channel *); void ieee80211_update_chw(struct ieee80211com *); int ieee80211_ibss_merge_check(struct ieee80211_node *); int ieee80211_ibss_node_check_new(struct ieee80211_node *ni, const struct ieee80211_scanparams *); int ieee80211_ibss_merge(struct ieee80211_node *); struct ieee80211_scan_entry; int ieee80211_sta_join(struct ieee80211vap *, struct ieee80211_channel *, const struct ieee80211_scan_entry *); void ieee80211_sta_leave(struct ieee80211_node *); void ieee80211_node_deauth(struct ieee80211_node *, int); int ieee80211_ies_init(struct ieee80211_ies *, const uint8_t *, int); void ieee80211_ies_cleanup(struct ieee80211_ies *); void ieee80211_ies_expand(struct ieee80211_ies *); #define ieee80211_ies_setie(_ies, _ie, _off) do { \ (_ies)._ie = (_ies).data + (_off); \ } while (0) /* * Table of ieee80211_node instances. Each ieee80211com * has one that holds association stations (when operating * as an ap) or neighbors (in ibss mode). * * XXX embed this in ieee80211com instead of indirect? */ struct ieee80211_node_table { struct ieee80211com *nt_ic; /* back reference */ ieee80211_node_lock_t nt_nodelock; /* on node table */ TAILQ_HEAD(, ieee80211_node) nt_node; /* information of all nodes */ LIST_HEAD(, ieee80211_node) nt_hash[IEEE80211_NODE_HASHSIZE]; int nt_count; /* number of nodes */ struct ieee80211_node **nt_keyixmap; /* key ix -> node map */ int nt_keyixmax; /* keyixmap size */ const char *nt_name; /* table name for debug msgs */ int nt_inact_init; /* initial node inact setting */ }; struct ieee80211_node *ieee80211_tmp_node(struct ieee80211vap *, const uint8_t macaddr[IEEE80211_ADDR_LEN]); struct ieee80211_node *ieee80211_dup_bss(struct ieee80211vap *, const uint8_t macaddr[IEEE80211_ADDR_LEN]); struct ieee80211_node *ieee80211_node_create_wds(struct ieee80211vap *, const uint8_t bssid[IEEE80211_ADDR_LEN], struct ieee80211_channel *); /* These functions are taking __func__, __LINE__ for IEEE80211_DEBUG_REFCNT */ struct ieee80211_node *_ieee80211_ref_node(struct ieee80211_node *, const char *func, int line); void _ieee80211_free_node(struct ieee80211_node *, const char *func, int line); struct ieee80211_node *_ieee80211_find_node_locked( struct ieee80211_node_table *, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line); struct ieee80211_node *_ieee80211_find_node(struct ieee80211_node_table *, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line); struct ieee80211_node *_ieee80211_find_vap_node_locked( struct ieee80211_node_table *, const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line); struct ieee80211_node *_ieee80211_find_vap_node( struct ieee80211_node_table *, const struct ieee80211vap *vap, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line); struct ieee80211_node *_ieee80211_find_rxnode(struct ieee80211com *, const struct ieee80211_frame_min *, const char *func, int line); struct ieee80211_node *_ieee80211_find_rxnode_withkey( struct ieee80211com *, const struct ieee80211_frame_min *, uint16_t keyix, const char *func, int line); struct ieee80211_node *_ieee80211_find_txnode(struct ieee80211vap *, const uint8_t macaddr[IEEE80211_ADDR_LEN], const char *func, int line); #define ieee80211_ref_node(ni) \ _ieee80211_ref_node(ni, __func__, __LINE__) #define ieee80211_free_node(ni) \ _ieee80211_free_node(ni, __func__, __LINE__) #define ieee80211_find_node_locked(nt, mac) \ _ieee80211_find_node_locked(nt, mac, __func__, __LINE__) #define ieee80211_find_node(nt, mac) \ _ieee80211_find_node(nt, mac, __func__, __LINE__) #define ieee80211_find_vap_node_locked(nt, vap, mac) \ _ieee80211_find_vap_node_locked(nt, vap, mac, __func__, __LINE__) #define ieee80211_find_vap_node(nt, vap, mac) \ _ieee80211_find_vap_node(nt, vap, mac, __func__, __LINE__) #define ieee80211_find_rxnode(ic, wh) \ _ieee80211_find_rxnode(ic, wh, __func__, __LINE__) #define ieee80211_find_rxnode_withkey(ic, wh, keyix) \ _ieee80211_find_rxnode_withkey(ic, wh, keyix, __func__, __LINE__) #define ieee80211_find_txnode(vap, mac) \ _ieee80211_find_txnode(vap, mac, __func__, __LINE__) int ieee80211_node_delucastkey(struct ieee80211_node *); void ieee80211_node_timeout(void *arg); typedef void ieee80211_iter_func(void *, struct ieee80211_node *); int ieee80211_iterate_nodes_vap(struct ieee80211_node_table *, struct ieee80211vap *, ieee80211_iter_func *, void *); void ieee80211_iterate_nodes(struct ieee80211_node_table *, ieee80211_iter_func *, void *); void ieee80211_notify_erp_locked(struct ieee80211com *); void ieee80211_dump_node(struct ieee80211_node_table *, struct ieee80211_node *); void ieee80211_dump_nodes(struct ieee80211_node_table *); struct ieee80211_node *ieee80211_fakeup_adhoc_node(struct ieee80211vap *, const uint8_t macaddr[IEEE80211_ADDR_LEN]); struct ieee80211_scanparams; void ieee80211_init_neighbor(struct ieee80211_node *, const struct ieee80211_frame *, const struct ieee80211_scanparams *); struct ieee80211_node *ieee80211_add_neighbor(struct ieee80211vap *, const struct ieee80211_frame *, const struct ieee80211_scanparams *); void ieee80211_node_join(struct ieee80211_node *,int); void ieee80211_node_leave(struct ieee80211_node *); int8_t ieee80211_getrssi(struct ieee80211vap *); void ieee80211_getsignal(struct ieee80211vap *, int8_t *, int8_t *); + +uint8_t ieee80211_node_get_txrate_dot11rate(struct ieee80211_node *); +void ieee80211_node_set_txrate_dot11rate(struct ieee80211_node *, uint8_t); +void ieee80211_node_set_txrate_ht_mcsrate(struct ieee80211_node *, uint8_t); +uint32_t ieee80211_node_get_txrate_kbit(struct ieee80211_node *); + #endif /* _NET80211_IEEE80211_NODE_H_ */ diff --git a/sys/net80211/ieee80211_ratectl_none.c b/sys/net80211/ieee80211_ratectl_none.c index 4ab122fbab92..47f88cbd3a79 100644 --- a/sys/net80211/ieee80211_ratectl_none.c +++ b/sys/net80211/ieee80211_ratectl_none.c @@ -1,116 +1,118 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2010 Bernhard Schmidt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include static void none_init(struct ieee80211vap *vap) { } static void none_deinit(struct ieee80211vap *vap) { IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL); } static void none_node_init(struct ieee80211_node *ni) { - ni->ni_txrate = ni->ni_rates.rs_rates[0] & IEEE80211_RATE_VAL; + ieee80211_node_set_txrate_dot11rate(ni, + ni->ni_rates.rs_rates[0] & IEEE80211_RATE_VAL); } static void none_node_deinit(struct ieee80211_node *ni) { } static int none_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused) { int rix = 0; - ni->ni_txrate = ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL; + ieee80211_node_set_txrate_dot11rate(ni, + ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL); return rix; } static void none_tx_complete(const struct ieee80211_node *ni, const struct ieee80211_ratectl_tx_status *status) { } static void none_tx_update(struct ieee80211vap *vap, struct ieee80211_ratectl_tx_stats *stats) { } static void none_setinterval(const struct ieee80211vap *vap, int msecs) { } /* number of references from net80211 layer */ static int nrefs = 0; static const struct ieee80211_ratectl none = { .ir_name = "none", .ir_attach = NULL, .ir_detach = NULL, .ir_init = none_init, .ir_deinit = none_deinit, .ir_node_init = none_node_init, .ir_node_deinit = none_node_deinit, .ir_rate = none_rate, .ir_tx_complete = none_tx_complete, .ir_tx_update = none_tx_update, .ir_setinterval = none_setinterval, }; IEEE80211_RATECTL_MODULE(ratectl_none, 1); IEEE80211_RATECTL_ALG(none, IEEE80211_RATECTL_NONE, none); diff --git a/sys/net80211/ieee80211_rssadapt.c b/sys/net80211/ieee80211_rssadapt.c index 6c77727d7526..43118aad53c3 100644 --- a/sys/net80211/ieee80211_rssadapt.c +++ b/sys/net80211/ieee80211_rssadapt.c @@ -1,386 +1,390 @@ /* $NetBSD: ieee80211_rssadapt.c,v 1.9 2005/02/26 22:45:09 perry Exp $ */ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2010 Rui Paulo * Copyright (c) 2003, 2004 David Young. All rights reserved. * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * 3. The name of David Young may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. */ #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct rssadapt_expavgctl { /* RSS threshold decay. */ u_int rc_decay_denom; u_int rc_decay_old; /* RSS threshold update. */ u_int rc_thresh_denom; u_int rc_thresh_old; /* RSS average update. */ u_int rc_avgrssi_denom; u_int rc_avgrssi_old; }; static struct rssadapt_expavgctl master_expavgctl = { .rc_decay_denom = 16, .rc_decay_old = 15, .rc_thresh_denom = 8, .rc_thresh_old = 4, .rc_avgrssi_denom = 8, .rc_avgrssi_old = 4 }; #ifdef interpolate #undef interpolate #endif #define interpolate(parm, old, new) ((parm##_old * (old) + \ (parm##_denom - parm##_old) * (new)) / \ parm##_denom) static void rssadapt_setinterval(const struct ieee80211vap *, int); static void rssadapt_init(struct ieee80211vap *); static void rssadapt_deinit(struct ieee80211vap *); static void rssadapt_updatestats(struct ieee80211_rssadapt_node *); static void rssadapt_node_init(struct ieee80211_node *); static void rssadapt_node_deinit(struct ieee80211_node *); static int rssadapt_rate(struct ieee80211_node *, void *, uint32_t); static void rssadapt_lower_rate(struct ieee80211_rssadapt_node *, int, int); static void rssadapt_raise_rate(struct ieee80211_rssadapt_node *, int, int); static void rssadapt_tx_complete(const struct ieee80211_node *, const struct ieee80211_ratectl_tx_status *); static void rssadapt_sysctlattach(struct ieee80211vap *, struct sysctl_ctx_list *, struct sysctl_oid *); /* number of references from net80211 layer */ static int nrefs = 0; static const struct ieee80211_ratectl rssadapt = { .ir_name = "rssadapt", .ir_attach = NULL, .ir_detach = NULL, .ir_init = rssadapt_init, .ir_deinit = rssadapt_deinit, .ir_node_init = rssadapt_node_init, .ir_node_deinit = rssadapt_node_deinit, .ir_rate = rssadapt_rate, .ir_tx_complete = rssadapt_tx_complete, .ir_tx_update = NULL, .ir_setinterval = rssadapt_setinterval, }; IEEE80211_RATECTL_MODULE(rssadapt, 1); IEEE80211_RATECTL_ALG(rssadapt, IEEE80211_RATECTL_RSSADAPT, rssadapt); static void rssadapt_setinterval(const struct ieee80211vap *vap, int msecs) { struct ieee80211_rssadapt *rs = vap->iv_rs; if (!rs) return; if (msecs < 100) msecs = 100; rs->interval = msecs_to_ticks(msecs); } static void rssadapt_init(struct ieee80211vap *vap) { struct ieee80211_rssadapt *rs; KASSERT(vap->iv_rs == NULL, ("%s: iv_rs already initialized", __func__)); nrefs++; /* XXX locking */ vap->iv_rs = rs = IEEE80211_MALLOC(sizeof(struct ieee80211_rssadapt), M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (rs == NULL) { if_printf(vap->iv_ifp, "couldn't alloc ratectl structure\n"); return; } rs->vap = vap; rssadapt_setinterval(vap, 500 /* msecs */); rssadapt_sysctlattach(vap, vap->iv_sysctl, vap->iv_oid); } static void rssadapt_deinit(struct ieee80211vap *vap) { IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL); KASSERT(nrefs > 0, ("imbalanced attach/detach")); nrefs--; /* XXX locking */ } static void rssadapt_updatestats(struct ieee80211_rssadapt_node *ra) { long interval; ra->ra_pktrate = (ra->ra_pktrate + 10*(ra->ra_nfail + ra->ra_nok))/2; ra->ra_nfail = ra->ra_nok = 0; /* * A node is eligible for its rate to be raised every 1/10 to 10 * seconds, more eligible in proportion to recent packet rates. */ interval = MAX(10*1000, 10*1000 / MAX(1, 10 * ra->ra_pktrate)); ra->ra_raise_interval = msecs_to_ticks(interval); } static void rssadapt_node_init(struct ieee80211_node *ni) { struct ieee80211_rssadapt_node *ra; struct ieee80211vap *vap = ni->ni_vap; struct ieee80211_rssadapt *rsa = vap->iv_rs; const struct ieee80211_rateset *rs = &ni->ni_rates; if (!rsa) { if_printf(vap->iv_ifp, "ratectl structure was not allocated, " "per-node structure allocation skipped\n"); return; } if (ni->ni_rctls == NULL) { ni->ni_rctls = ra = IEEE80211_MALLOC(sizeof(struct ieee80211_rssadapt_node), M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (ra == NULL) { if_printf(vap->iv_ifp, "couldn't alloc per-node ratectl " "structure\n"); return; } } else ra = ni->ni_rctls; ra->ra_rs = rsa; ra->ra_rates = *rs; rssadapt_updatestats(ra); /* pick initial rate */ for (ra->ra_rix = rs->rs_nrates - 1; ra->ra_rix > 0 && (rs->rs_rates[ra->ra_rix] & IEEE80211_RATE_VAL) > 72; ra->ra_rix--) ; - ni->ni_txrate = rs->rs_rates[ra->ra_rix] & IEEE80211_RATE_VAL; + ieee80211_node_set_txrate_dot11rate(ni, + rs->rs_rates[ra->ra_rix] & IEEE80211_RATE_VAL); ra->ra_ticks = ticks; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, - "RSSADAPT initial rate %d", ni->ni_txrate); + "RSSADAPT initial rate %d Mbit/s", + ieee80211_node_get_txrate_kbit(ni) / 1000); } static void rssadapt_node_deinit(struct ieee80211_node *ni) { IEEE80211_FREE(ni->ni_rctls, M_80211_RATECTL); } static __inline int bucket(int pktlen) { int i, top, thridx; for (i = 0, top = IEEE80211_RSSADAPT_BKT0; i < IEEE80211_RSSADAPT_BKTS; i++, top <<= IEEE80211_RSSADAPT_BKTPOWER) { thridx = i; if (pktlen <= top) break; } return thridx; } static int rssadapt_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg) { struct ieee80211_rssadapt_node *ra = ni->ni_rctls; u_int pktlen = iarg; const struct ieee80211_rateset *rs; uint16_t (*thrs)[IEEE80211_RATE_SIZE]; int rix, rssi; /* XXX should return -1 here, but drivers may not expect this... */ if (!ra) { - ni->ni_txrate = ni->ni_rates.rs_rates[0]; + ieee80211_node_set_txrate_dot11rate(ni, + ni->ni_rates.rs_rates[0]); return 0; } rs = &ra->ra_rates; if ((ticks - ra->ra_ticks) > ra->ra_rs->interval) { rssadapt_updatestats(ra); ra->ra_ticks = ticks; } thrs = &ra->ra_rate_thresh[bucket(pktlen)]; /* XXX this is average rssi, should be using last value */ rssi = ni->ni_ic->ic_node_getrssi(ni); for (rix = rs->rs_nrates-1; rix >= 0; rix--) if ((*thrs)[rix] < (rssi << 8)) break; if (rix != ra->ra_rix) { /* update public rate */ - ni->ni_txrate = ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL; + ieee80211_node_set_txrate_dot11rate(ni, + ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL); ra->ra_rix = rix; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, - "RSSADAPT new rate %d (pktlen %d rssi %d)", - ni->ni_txrate, pktlen, rssi); + "RSSADAPT new rate %d Mbit/s (pktlen %d rssi %d)", + ieee80211_node_get_txrate_kbit(ni) / 1000, pktlen, rssi); } return rix; } /* * Adapt the data rate to suit the conditions. When a transmitted * packet is dropped after RAL_RSSADAPT_RETRY_LIMIT retransmissions, * raise the RSS threshold for transmitting packets of similar length at * the same data rate. */ static void rssadapt_lower_rate(struct ieee80211_rssadapt_node *ra, int pktlen, int rssi) { uint16_t last_thr; uint16_t (*thrs)[IEEE80211_RATE_SIZE]; u_int rix; thrs = &ra->ra_rate_thresh[bucket(pktlen)]; rix = ra->ra_rix; last_thr = (*thrs)[rix]; (*thrs)[rix] = interpolate(master_expavgctl.rc_thresh, last_thr, (rssi << 8)); IEEE80211_DPRINTF(ra->ra_rs->vap, IEEE80211_MSG_RATECTL, "RSSADAPT lower threshold for rate %d (last_thr %d new thr %d rssi %d)\n", ra->ra_rates.rs_rates[rix + 1] & IEEE80211_RATE_VAL, last_thr, (*thrs)[rix], rssi); } static void rssadapt_raise_rate(struct ieee80211_rssadapt_node *ra, int pktlen, int rssi) { uint16_t (*thrs)[IEEE80211_RATE_SIZE]; uint16_t newthr, oldthr; int rix; thrs = &ra->ra_rate_thresh[bucket(pktlen)]; rix = ra->ra_rix; if ((*thrs)[rix + 1] > (*thrs)[rix]) { oldthr = (*thrs)[rix + 1]; if ((*thrs)[rix] == 0) newthr = (rssi << 8); else newthr = (*thrs)[rix]; (*thrs)[rix + 1] = interpolate(master_expavgctl.rc_decay, oldthr, newthr); IEEE80211_DPRINTF(ra->ra_rs->vap, IEEE80211_MSG_RATECTL, "RSSADAPT raise threshold for rate %d (oldthr %d newthr %d rssi %d)\n", ra->ra_rates.rs_rates[rix + 1] & IEEE80211_RATE_VAL, oldthr, newthr, rssi); ra->ra_last_raise = ticks; } } static void rssadapt_tx_complete(const struct ieee80211_node *ni, const struct ieee80211_ratectl_tx_status *status) { struct ieee80211_rssadapt_node *ra = ni->ni_rctls; int pktlen, rssi; if (!ra) return; if ((status->flags & (IEEE80211_RATECTL_STATUS_PKTLEN|IEEE80211_RATECTL_STATUS_RSSI)) != (IEEE80211_RATECTL_STATUS_PKTLEN|IEEE80211_RATECTL_STATUS_RSSI)) return; pktlen = status->pktlen; rssi = status->rssi; if (status->status == IEEE80211_RATECTL_TX_SUCCESS) { ra->ra_nok++; if ((ra->ra_rix + 1) < ra->ra_rates.rs_nrates && (ticks - ra->ra_last_raise) >= ra->ra_raise_interval) rssadapt_raise_rate(ra, pktlen, rssi); } else { ra->ra_nfail++; rssadapt_lower_rate(ra, pktlen, rssi); } } static int rssadapt_sysctl_interval(SYSCTL_HANDLER_ARGS) { struct ieee80211vap *vap = arg1; struct ieee80211_rssadapt *rs = vap->iv_rs; int msecs, error; if (!rs) return ENOMEM; msecs = ticks_to_msecs(rs->interval); error = sysctl_handle_int(oidp, &msecs, 0, req); if (error || !req->newptr) return error; rssadapt_setinterval(vap, msecs); return 0; } static void rssadapt_sysctlattach(struct ieee80211vap *vap, struct sysctl_ctx_list *ctx, struct sysctl_oid *tree) { SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "rssadapt_rate_interval", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, vap, 0, rssadapt_sysctl_interval, "I", "rssadapt operation interval (ms)"); } diff --git a/sys/net80211/ieee80211_scan_sta.c b/sys/net80211/ieee80211_scan_sta.c index a8159fca6d80..69347a5d99cf 100644 --- a/sys/net80211/ieee80211_scan_sta.c +++ b/sys/net80211/ieee80211_scan_sta.c @@ -1,1999 +1,1999 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include /* * IEEE 802.11 station scanning support. */ #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_TDMA #include #endif #ifdef IEEE80211_SUPPORT_MESH #include #endif #include #include #include /* * Parameters for managing cache entries: * * o a station with STA_FAILS_MAX failures is not considered * when picking a candidate * o a station that hasn't had an update in STA_PURGE_SCANS * (background) scans is discarded * o after STA_FAILS_AGE seconds we clear the failure count */ #define STA_FAILS_MAX 2 /* assoc failures before ignored */ #define STA_FAILS_AGE (2*60) /* time before clearing fails (secs) */ #define STA_PURGE_SCANS 2 /* age for purging entries (scans) */ /* XXX tunable */ #define STA_RSSI_MIN 8 /* min acceptable rssi */ #define STA_RSSI_MAX 40 /* max rssi for comparison */ struct sta_entry { struct ieee80211_scan_entry base; TAILQ_ENTRY(sta_entry) se_list; LIST_ENTRY(sta_entry) se_hash; uint8_t se_fails; /* failure to associate count */ uint8_t se_seen; /* seen during current scan */ uint8_t se_notseen; /* not seen in previous scans */ uint8_t se_flags; #define STA_DEMOTE11B 0x01 /* match w/ demoted 11b chan */ uint32_t se_avgrssi; /* LPF rssi state */ unsigned long se_lastupdate; /* time of last update */ unsigned long se_lastfail; /* time of last failure */ unsigned long se_lastassoc; /* time of last association */ u_int se_scangen; /* iterator scan gen# */ u_int se_countrygen; /* gen# of last cc notify */ }; #define STA_HASHSIZE 32 /* simple hash is enough for variation of macaddr */ #define STA_HASH(addr) \ (((const uint8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % STA_HASHSIZE) #define MAX_IEEE_CHAN 256 /* max acceptable IEEE chan # */ CTASSERT(MAX_IEEE_CHAN >= 256); struct sta_table { ieee80211_scan_table_lock_t st_lock; /* on scan table */ TAILQ_HEAD(, sta_entry) st_entry; /* all entries */ LIST_HEAD(, sta_entry) st_hash[STA_HASHSIZE]; ieee80211_scan_iter_lock_t st_scanlock; /* on st_scaniter */ u_int st_scaniter; /* gen# for iterator */ u_int st_scangen; /* scan generation # */ int st_newscan; /* ap-related state */ int st_maxrssi[MAX_IEEE_CHAN]; }; static void sta_flush_table(struct sta_table *); /* * match_bss returns a bitmask describing if an entry is suitable * for use. If non-zero the entry was deemed not suitable and it's * contents explains why. The following flags are or'd to this * mask and can be used to figure out why the entry was rejected. */ #define MATCH_CHANNEL 0x00001 /* channel mismatch */ #define MATCH_CAPINFO 0x00002 /* capabilities mismatch, e.g. no ess */ #define MATCH_PRIVACY 0x00004 /* privacy mismatch */ #define MATCH_RATE 0x00008 /* rate set mismatch */ #define MATCH_SSID 0x00010 /* ssid mismatch */ #define MATCH_BSSID 0x00020 /* bssid mismatch */ #define MATCH_FAILS 0x00040 /* too many failed auth attempts */ #define MATCH_NOTSEEN 0x00080 /* not seen in recent scans */ #define MATCH_RSSI 0x00100 /* rssi deemed too low to use */ #define MATCH_CC 0x00200 /* country code mismatch */ #ifdef IEEE80211_SUPPORT_TDMA #define MATCH_TDMA_NOIE 0x00400 /* no TDMA ie */ #define MATCH_TDMA_NOTMASTER 0x00800 /* not TDMA master */ #define MATCH_TDMA_NOSLOT 0x01000 /* all TDMA slots occupied */ #define MATCH_TDMA_LOCAL 0x02000 /* local address */ #define MATCH_TDMA_VERSION 0x04000 /* protocol version mismatch */ #endif #define MATCH_MESH_NOID 0x10000 /* no MESHID ie */ #define MATCH_MESHID 0x20000 /* meshid mismatch */ static int match_bss(struct ieee80211vap *, const struct ieee80211_scan_state *, struct sta_entry *, int); static void adhoc_age(struct ieee80211_scan_state *); static __inline int isocmp(const uint8_t cc1[], const uint8_t cc2[]) { return (cc1[0] == cc2[0] && cc1[1] == cc2[1]); } /* number of references from net80211 layer */ static int nrefs = 0; /* * Module glue. */ IEEE80211_SCANNER_MODULE(sta, 1); /* * Attach prior to any scanning work. */ static int sta_attach(struct ieee80211_scan_state *ss) { struct sta_table *st; st = (struct sta_table *) IEEE80211_MALLOC(sizeof(struct sta_table), M_80211_SCAN, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (st == NULL) return 0; IEEE80211_SCAN_TABLE_LOCK_INIT(st, "scantable"); IEEE80211_SCAN_ITER_LOCK_INIT(st, "scangen"); TAILQ_INIT(&st->st_entry); ss->ss_priv = st; nrefs++; /* NB: we assume caller locking */ return 1; } /* * Cleanup any private state. */ static int sta_detach(struct ieee80211_scan_state *ss) { struct sta_table *st = ss->ss_priv; if (st != NULL) { sta_flush_table(st); IEEE80211_SCAN_TABLE_LOCK_DESTROY(st); IEEE80211_SCAN_ITER_LOCK_DESTROY(st); IEEE80211_FREE(st, M_80211_SCAN); KASSERT(nrefs > 0, ("imbalanced attach/detach")); nrefs--; /* NB: we assume caller locking */ } return 1; } /* * Flush all per-scan state. */ static int sta_flush(struct ieee80211_scan_state *ss) { struct sta_table *st = ss->ss_priv; IEEE80211_SCAN_TABLE_LOCK(st); sta_flush_table(st); IEEE80211_SCAN_TABLE_UNLOCK(st); ss->ss_last = 0; return 0; } /* * Flush all entries in the scan cache. */ static void sta_flush_table(struct sta_table *st) { struct sta_entry *se, *next; TAILQ_FOREACH_SAFE(se, &st->st_entry, se_list, next) { TAILQ_REMOVE(&st->st_entry, se, se_list); LIST_REMOVE(se, se_hash); ieee80211_ies_cleanup(&se->base.se_ies); IEEE80211_FREE(se, M_80211_SCAN); } memset(st->st_maxrssi, 0, sizeof(st->st_maxrssi)); } /* * Process a beacon or probe response frame; create an * entry in the scan cache or update any previous entry. */ static int sta_add(struct ieee80211_scan_state *ss, struct ieee80211_channel *curchan, const struct ieee80211_scanparams *sp, const struct ieee80211_frame *wh, int subtype, int rssi, int noise) { #define ISPROBE(_st) ((_st) == IEEE80211_FC0_SUBTYPE_PROBE_RESP) #define PICK1ST(_ss) \ ((ss->ss_flags & (IEEE80211_SCAN_PICK1ST | IEEE80211_SCAN_GOTPICK)) == \ IEEE80211_SCAN_PICK1ST) struct sta_table *st = ss->ss_priv; const uint8_t *macaddr = wh->i_addr2; struct ieee80211vap *vap = ss->ss_vap; struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *c; struct sta_entry *se; struct ieee80211_scan_entry *ise; int hash; hash = STA_HASH(macaddr); IEEE80211_SCAN_TABLE_LOCK(st); LIST_FOREACH(se, &st->st_hash[hash], se_hash) if (IEEE80211_ADDR_EQ(se->base.se_macaddr, macaddr)) goto found; se = (struct sta_entry *) IEEE80211_MALLOC(sizeof(struct sta_entry), M_80211_SCAN, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (se == NULL) { IEEE80211_SCAN_TABLE_UNLOCK(st); return 0; } se->se_scangen = st->st_scaniter-1; se->se_avgrssi = IEEE80211_RSSI_DUMMY_MARKER; IEEE80211_ADDR_COPY(se->base.se_macaddr, macaddr); TAILQ_INSERT_TAIL(&st->st_entry, se, se_list); LIST_INSERT_HEAD(&st->st_hash[hash], se, se_hash); found: ise = &se->base; /* XXX ap beaconing multiple ssid w/ same bssid */ if (sp->ssid[1] != 0 && (ISPROBE(subtype) || ise->se_ssid[1] == 0)) memcpy(ise->se_ssid, sp->ssid, 2+sp->ssid[1]); KASSERT(sp->rates[1] <= IEEE80211_RATE_MAXSIZE, ("rate set too large: %u", sp->rates[1])); memcpy(ise->se_rates, sp->rates, 2+sp->rates[1]); if (sp->xrates != NULL) { /* XXX validate xrates[1] */ KASSERT(sp->xrates[1] <= IEEE80211_RATE_MAXSIZE, ("xrate set too large: %u", sp->xrates[1])); memcpy(ise->se_xrates, sp->xrates, 2+sp->xrates[1]); } else ise->se_xrates[1] = 0; IEEE80211_ADDR_COPY(ise->se_bssid, wh->i_addr3); if ((sp->status & IEEE80211_BPARSE_OFFCHAN) == 0) { /* * Record rssi data using extended precision LPF filter. * * NB: use only on-channel data to insure we get a good * estimate of the signal we'll see when associated. */ IEEE80211_RSSI_LPF(se->se_avgrssi, rssi); ise->se_rssi = IEEE80211_RSSI_GET(se->se_avgrssi); ise->se_noise = noise; } memcpy(ise->se_tstamp.data, sp->tstamp, sizeof(ise->se_tstamp)); ise->se_intval = sp->bintval; ise->se_capinfo = sp->capinfo; #ifdef IEEE80211_SUPPORT_MESH if (sp->meshid != NULL && sp->meshid[1] != 0) memcpy(ise->se_meshid, sp->meshid, 2+sp->meshid[1]); #endif /* * Beware of overriding se_chan for frames seen * off-channel; this can cause us to attempt an * association on the wrong channel. */ if (sp->status & IEEE80211_BPARSE_OFFCHAN) { /* * Off-channel, locate the home/bss channel for the sta * using the value broadcast in the DSPARMS ie. We know * sp->chan has this value because it's used to calculate * IEEE80211_BPARSE_OFFCHAN. */ c = ieee80211_find_channel_byieee(ic, sp->chan, curchan->ic_flags); if (c != NULL) { ise->se_chan = c; } else if (ise->se_chan == NULL) { /* should not happen, pick something */ ise->se_chan = curchan; } } else ise->se_chan = curchan; /* VHT demotion */ if (IEEE80211_IS_CHAN_VHT(ise->se_chan) && sp->vhtcap == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N, "%s: demoting VHT->HT %d/0x%08x\n", __func__, ise->se_chan->ic_freq, ise->se_chan->ic_flags); /* Demote legacy networks to a non-VHT channel. */ c = ieee80211_find_channel(ic, ise->se_chan->ic_freq, ise->se_chan->ic_flags & ~IEEE80211_CHAN_VHT); KASSERT(c != NULL, ("no non-VHT channel %u", ise->se_chan->ic_ieee)); ise->se_chan = c; } /* HT demotion */ if (IEEE80211_IS_CHAN_HT(ise->se_chan) && sp->htcap == NULL) { /* Demote legacy networks to a non-HT channel. */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N, "%s: demoting HT->legacy %d/0x%08x\n", __func__, ise->se_chan->ic_freq, ise->se_chan->ic_flags); c = ieee80211_find_channel(ic, ise->se_chan->ic_freq, ise->se_chan->ic_flags & ~IEEE80211_CHAN_HT); KASSERT(c != NULL, ("no legacy channel %u", ise->se_chan->ic_ieee)); ise->se_chan = c; } ise->se_fhdwell = sp->fhdwell; ise->se_fhindex = sp->fhindex; ise->se_erp = sp->erp; ise->se_timoff = sp->timoff; if (sp->tim != NULL) { const struct ieee80211_tim_ie *tim = (const struct ieee80211_tim_ie *) sp->tim; ise->se_dtimperiod = tim->tim_period; } if (sp->country != NULL) { const struct ieee80211_country_ie *cie = (const struct ieee80211_country_ie *) sp->country; /* * If 11d is enabled and we're attempting to join a bss * that advertises it's country code then compare our * current settings to what we fetched from the country ie. * If our country code is unspecified or different then * dispatch an event to user space that identifies the * country code so our regdomain config can be changed. */ /* XXX only for STA mode? */ if ((IEEE80211_IS_CHAN_11D(ise->se_chan) || (vap->iv_flags_ext & IEEE80211_FEXT_DOTD)) && (ic->ic_regdomain.country == CTRY_DEFAULT || !isocmp(cie->cc, ic->ic_regdomain.isocc))) { /* only issue one notify event per scan */ if (se->se_countrygen != st->st_scangen) { ieee80211_notify_country(vap, ise->se_bssid, cie->cc); se->se_countrygen = st->st_scangen; } } ise->se_cc[0] = cie->cc[0]; ise->se_cc[1] = cie->cc[1]; } /* NB: no need to setup ie ptrs; they are not (currently) used */ (void) ieee80211_ies_init(&ise->se_ies, sp->ies, sp->ies_len); /* clear failure count after STA_FAIL_AGE passes */ if (se->se_fails && (ticks - se->se_lastfail) > STA_FAILS_AGE*hz) { se->se_fails = 0; IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_SCAN, macaddr, "%s: fails %u", __func__, se->se_fails); } se->se_lastupdate = ticks; /* update time */ se->se_seen = 1; se->se_notseen = 0; KASSERT(sizeof(sp->bchan) == 1, ("bchan size")); if (rssi > st->st_maxrssi[sp->bchan]) st->st_maxrssi[sp->bchan] = rssi; IEEE80211_SCAN_TABLE_UNLOCK(st); /* * If looking for a quick choice and nothing's * been found check here. */ if (PICK1ST(ss) && match_bss(vap, ss, se, IEEE80211_MSG_SCAN) == 0) ss->ss_flags |= IEEE80211_SCAN_GOTPICK; return 1; #undef PICK1ST #undef ISPROBE } /* * Check if a channel is excluded by user request. */ static int isexcluded(struct ieee80211vap *vap, const struct ieee80211_channel *c) { return (isclr(vap->iv_ic->ic_chan_active, c->ic_ieee) || (vap->iv_des_chan != IEEE80211_CHAN_ANYC && c->ic_freq != vap->iv_des_chan->ic_freq)); } static struct ieee80211_channel * find11gchannel(struct ieee80211com *ic, int i, int freq) { struct ieee80211_channel *c; int j; /* * The normal ordering in the channel list is b channel * immediately followed by g so optimize the search for * this. We'll still do a full search just in case. */ for (j = i+1; j < ic->ic_nchans; j++) { c = &ic->ic_channels[j]; if (c->ic_freq == freq && IEEE80211_IS_CHAN_G(c)) return c; } for (j = 0; j < i; j++) { c = &ic->ic_channels[j]; if (c->ic_freq == freq && IEEE80211_IS_CHAN_G(c)) return c; } return NULL; } static const u_int chanflags[IEEE80211_MODE_MAX] = { [IEEE80211_MODE_AUTO] = IEEE80211_CHAN_B, [IEEE80211_MODE_11A] = IEEE80211_CHAN_A, [IEEE80211_MODE_11B] = IEEE80211_CHAN_B, [IEEE80211_MODE_11G] = IEEE80211_CHAN_G, [IEEE80211_MODE_FH] = IEEE80211_CHAN_FHSS, /* check base channel */ [IEEE80211_MODE_TURBO_A] = IEEE80211_CHAN_A, [IEEE80211_MODE_TURBO_G] = IEEE80211_CHAN_G, [IEEE80211_MODE_STURBO_A] = IEEE80211_CHAN_ST, [IEEE80211_MODE_HALF] = IEEE80211_CHAN_HALF, [IEEE80211_MODE_QUARTER] = IEEE80211_CHAN_QUARTER, /* check legacy */ [IEEE80211_MODE_11NA] = IEEE80211_CHAN_A, [IEEE80211_MODE_11NG] = IEEE80211_CHAN_G, [IEEE80211_MODE_VHT_5GHZ] = IEEE80211_CHAN_A, [IEEE80211_MODE_VHT_2GHZ] = IEEE80211_CHAN_G, }; static void add_channels(struct ieee80211vap *vap, struct ieee80211_scan_state *ss, enum ieee80211_phymode mode, const uint16_t freq[], int nfreq) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *c, *cg; u_int modeflags; int i; KASSERT(mode < nitems(chanflags), ("Unexpected mode %u", mode)); modeflags = chanflags[mode]; for (i = 0; i < nfreq; i++) { if (ss->ss_last >= IEEE80211_SCAN_MAX) break; c = ieee80211_find_channel(ic, freq[i], modeflags); if (c == NULL || isexcluded(vap, c)) continue; if (mode == IEEE80211_MODE_AUTO) { KASSERT(IEEE80211_IS_CHAN_B(c), ("%s: wrong channel for 'auto' mode %u / %u\n", __func__, c->ic_freq, c->ic_flags)); /* * XXX special-case 11b/g channels so we select * the g channel if both are present. */ if ((cg = find11gchannel(ic, i, c->ic_freq)) != NULL) c = cg; } ss->ss_chans[ss->ss_last++] = c; } } struct scanlist { uint16_t mode; uint16_t count; const uint16_t *list; }; static int checktable(const struct scanlist *scan, const struct ieee80211_channel *c) { int i; for (; scan->list != NULL; scan++) { for (i = 0; i < scan->count; i++) if (scan->list[i] == c->ic_freq) return 1; } return 0; } static int onscanlist(const struct ieee80211_scan_state *ss, const struct ieee80211_channel *c) { int i; for (i = 0; i < ss->ss_last; i++) if (ss->ss_chans[i] == c) return 1; return 0; } static void sweepchannels(struct ieee80211_scan_state *ss, struct ieee80211vap *vap, const struct scanlist table[]) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *c; int i; for (i = 0; i < ic->ic_nchans; i++) { if (ss->ss_last >= IEEE80211_SCAN_MAX) break; c = &ic->ic_channels[i]; /* * Ignore dynamic turbo channels; we scan them * in normal mode (i.e. not boosted). Likewise * for HT/VHT channels, they get scanned using * legacy rates. */ if (IEEE80211_IS_CHAN_DTURBO(c) || IEEE80211_IS_CHAN_HT(c) || IEEE80211_IS_CHAN_VHT(c)) continue; /* * If a desired mode was specified, scan only * channels that satisfy that constraint. */ if (vap->iv_des_mode != IEEE80211_MODE_AUTO && vap->iv_des_mode != ieee80211_chan2mode(c)) continue; /* * Skip channels excluded by user request. */ if (isexcluded(vap, c)) continue; /* * Add the channel unless it is listed in the * fixed scan order tables. This insures we * don't sweep back in channels we filtered out * above. */ if (checktable(table, c)) continue; /* Add channel to scanning list. */ ss->ss_chans[ss->ss_last++] = c; } /* * Explicitly add any desired channel if: * - not already on the scan list * - allowed by any desired mode constraint * - there is space in the scan list * This allows the channel to be used when the filtering * mechanisms would otherwise elide it (e.g HT, turbo). */ c = vap->iv_des_chan; if (c != IEEE80211_CHAN_ANYC && !onscanlist(ss, c) && (vap->iv_des_mode == IEEE80211_MODE_AUTO || vap->iv_des_mode == ieee80211_chan2mode(c)) && ss->ss_last < IEEE80211_SCAN_MAX) ss->ss_chans[ss->ss_last++] = c; } static void makescanlist(struct ieee80211_scan_state *ss, struct ieee80211vap *vap, const struct scanlist table[]) { const struct scanlist *scan; enum ieee80211_phymode mode; ss->ss_last = 0; /* * Use the table of ordered channels to construct the list * of channels for scanning. Any channels in the ordered * list not in the master list will be discarded. */ for (scan = table; scan->list != NULL; scan++) { mode = scan->mode; switch (mode) { case IEEE80211_MODE_11B: if (vap->iv_des_mode == IEEE80211_MODE_11B) break; /* * The scan table marks 2.4Ghz channels as b * so if the desired mode is 11g / 11ng / 11acg, * then use the 11b channel list but upgrade the mode. * * NB: 11b -> AUTO lets add_channels upgrade an * 11b channel to 11g if available. */ if (vap->iv_des_mode == IEEE80211_MODE_AUTO || vap->iv_des_mode == IEEE80211_MODE_11G || vap->iv_des_mode == IEEE80211_MODE_11NG || vap->iv_des_mode == IEEE80211_MODE_VHT_2GHZ) { mode = vap->iv_des_mode; break; } continue; case IEEE80211_MODE_11A: /* Use 11a channel list for 11na / 11ac modes */ if (vap->iv_des_mode == IEEE80211_MODE_11NA || vap->iv_des_mode == IEEE80211_MODE_VHT_5GHZ) { mode = vap->iv_des_mode; break; } /* FALLTHROUGH */ default: /* * If a desired mode was specified, scan only * channels that satisfy that constraint. */ if (vap->iv_des_mode != IEEE80211_MODE_AUTO && vap->iv_des_mode != mode) continue; } #ifdef IEEE80211_F_XR /* XR does not operate on turbo channels */ if ((vap->iv_flags & IEEE80211_F_XR) && (mode == IEEE80211_MODE_TURBO_A || mode == IEEE80211_MODE_TURBO_G || mode == IEEE80211_MODE_STURBO_A)) continue; #endif /* * Add the list of the channels; any that are not * in the master channel list will be discarded. */ add_channels(vap, ss, mode, scan->list, scan->count); } /* * Add the channels from the ic that are not present * in the table. */ sweepchannels(ss, vap, table); } static const uint16_t rcl1[] = /* 8 FCC channel: 52, 56, 60, 64, 36, 40, 44, 48 */ { 5260, 5280, 5300, 5320, 5180, 5200, 5220, 5240 }; static const uint16_t rcl2[] = /* 4 MKK channels: 34, 38, 42, 46 */ { 5170, 5190, 5210, 5230 }; static const uint16_t rcl3[] = /* 2.4Ghz ch: 1,6,11,7,13 */ { 2412, 2437, 2462, 2442, 2472 }; static const uint16_t rcl4[] = /* 5 FCC channel: 149, 153, 161, 165 */ { 5745, 5765, 5785, 5805, 5825 }; static const uint16_t rcl7[] = /* 11 ETSI channel: 100,104,108,112,116,120,124,128,132,136,140 */ { 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680, 5700 }; static const uint16_t rcl8[] = /* 2.4Ghz ch: 2,3,4,5,8,9,10,12 */ { 2417, 2422, 2427, 2432, 2447, 2452, 2457, 2467 }; static const uint16_t rcl9[] = /* 2.4Ghz ch: 14 */ { 2484 }; static const uint16_t rcl10[] = /* Added Korean channels 2312-2372 */ { 2312, 2317, 2322, 2327, 2332, 2337, 2342, 2347, 2352, 2357, 2362, 2367, 2372 }; static const uint16_t rcl11[] = /* Added Japan channels in 4.9/5.0 spectrum */ { 5040, 5060, 5080, 4920, 4940, 4960, 4980 }; #ifdef ATH_TURBO_SCAN static const uint16_t rcl5[] = /* 3 static turbo channels */ { 5210, 5250, 5290 }; static const uint16_t rcl6[] = /* 2 static turbo channels */ { 5760, 5800 }; static const uint16_t rcl6x[] = /* 4 FCC3 turbo channels */ { 5540, 5580, 5620, 5660 }; static const uint16_t rcl12[] = /* 2.4Ghz Turbo channel 6 */ { 2437 }; static const uint16_t rcl13[] = /* dynamic Turbo channels */ { 5200, 5240, 5280, 5765, 5805 }; #endif /* ATH_TURBO_SCAN */ #define X(a) .count = sizeof(a)/sizeof(a[0]), .list = a static const struct scanlist staScanTable[] = { { IEEE80211_MODE_11B, X(rcl3) }, { IEEE80211_MODE_11A, X(rcl1) }, { IEEE80211_MODE_11A, X(rcl2) }, { IEEE80211_MODE_11B, X(rcl8) }, { IEEE80211_MODE_11B, X(rcl9) }, { IEEE80211_MODE_11A, X(rcl4) }, #ifdef ATH_TURBO_SCAN { IEEE80211_MODE_STURBO_A, X(rcl5) }, { IEEE80211_MODE_STURBO_A, X(rcl6) }, { IEEE80211_MODE_TURBO_A, X(rcl6x) }, { IEEE80211_MODE_TURBO_A, X(rcl13) }, #endif /* ATH_TURBO_SCAN */ { IEEE80211_MODE_11A, X(rcl7) }, { IEEE80211_MODE_11B, X(rcl10) }, { IEEE80211_MODE_11A, X(rcl11) }, #ifdef ATH_TURBO_SCAN { IEEE80211_MODE_TURBO_G, X(rcl12) }, #endif /* ATH_TURBO_SCAN */ { .list = NULL } }; /* * Start a station-mode scan by populating the channel list. */ static int sta_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; makescanlist(ss, vap, staScanTable); if (ss->ss_mindwell == 0) ss->ss_mindwell = msecs_to_ticks(20); /* 20ms */ if (ss->ss_maxdwell == 0) ss->ss_maxdwell = msecs_to_ticks(200); /* 200ms */ st->st_scangen++; st->st_newscan = 1; return 0; } /* * Restart a scan, typically a bg scan but can * also be a fg scan that came up empty. */ static int sta_restart(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; st->st_newscan = 1; return 0; } /* * Cancel an ongoing scan. */ static int sta_cancel(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { return 0; } /* * Demote any supplied 11g channel to 11b. There should * always be an 11b channel but we check anyway... */ static struct ieee80211_channel * demote11b(struct ieee80211vap *vap, struct ieee80211_channel *chan) { struct ieee80211_channel *c; if (IEEE80211_IS_CHAN_ANYG(chan) && vap->iv_des_mode == IEEE80211_MODE_AUTO) { c = ieee80211_find_channel(vap->iv_ic, chan->ic_freq, (chan->ic_flags &~ (IEEE80211_CHAN_PUREG | IEEE80211_CHAN_G)) | IEEE80211_CHAN_B); if (c != NULL) chan = c; } return chan; } static int maxrate(const struct ieee80211_scan_entry *se) { const struct ieee80211_ie_htcap *htcap = (const struct ieee80211_ie_htcap *) se->se_ies.htcap_ie; int rmax, r, i, txstream; uint16_t caps; uint8_t txparams; rmax = 0; if (htcap != NULL) { /* * HT station; inspect supported MCS and then adjust * rate by channel width. */ txparams = htcap->hc_mcsset[12]; if (txparams & 0x3) { /* * TX MCS parameters defined and not equal to RX, * extract the number of spartial streams and * map it to the highest MCS rate. */ txstream = ((txparams & 0xc) >> 2) + 1; i = txstream * 8 - 1; } else for (i = 31; i >= 0 && isclr(htcap->hc_mcsset, i); i--); if (i >= 0) { caps = le16dec(&htcap->hc_cap); if ((caps & IEEE80211_HTCAP_CHWIDTH40) && (caps & IEEE80211_HTCAP_SHORTGI40)) rmax = ieee80211_htrates[i].ht40_rate_400ns; else if (caps & IEEE80211_HTCAP_CHWIDTH40) rmax = ieee80211_htrates[i].ht40_rate_800ns; else if (caps & IEEE80211_HTCAP_SHORTGI20) rmax = ieee80211_htrates[i].ht20_rate_400ns; else rmax = ieee80211_htrates[i].ht20_rate_800ns; } } for (i = 0; i < se->se_rates[1]; i++) { r = se->se_rates[2+i] & IEEE80211_RATE_VAL; if (r > rmax) rmax = r; } for (i = 0; i < se->se_xrates[1]; i++) { r = se->se_xrates[2+i] & IEEE80211_RATE_VAL; if (r > rmax) rmax = r; } return rmax; } /* * Compare the capabilities of two entries and decide which is * more desirable (return >0 if a is considered better). Note * that we assume compatibility/usability has already been checked * so we don't need to (e.g. validate whether privacy is supported). * Used to select the best scan candidate for association in a BSS. * * TODO: should we take 11n, 11ac into account when selecting the * best? Right now it just compares frequency band and RSSI. */ static int sta_compare(const struct sta_entry *a, const struct sta_entry *b) { #define PREFER(_a,_b,_what) do { \ if (((_a) ^ (_b)) & (_what)) \ return ((_a) & (_what)) ? 1 : -1; \ } while (0) int maxa, maxb; int8_t rssia, rssib; int weight; /* privacy support */ PREFER(a->base.se_capinfo, b->base.se_capinfo, IEEE80211_CAPINFO_PRIVACY); /* compare count of previous failures */ weight = b->se_fails - a->se_fails; if (abs(weight) > 1) return weight; /* * Compare rssi. If the two are considered equivalent * then fallback to other criteria. We threshold the * comparisons to avoid selecting an ap purely by rssi * when both values may be good but one ap is otherwise * more desirable (e.g. an 11b-only ap with stronger * signal than an 11g ap). */ rssia = MIN(a->base.se_rssi, STA_RSSI_MAX); rssib = MIN(b->base.se_rssi, STA_RSSI_MAX); if (abs(rssib - rssia) < 5) { /* best/max rate preferred if signal level close enough XXX */ maxa = maxrate(&a->base); maxb = maxrate(&b->base); if (maxa != maxb) return maxa - maxb; /* XXX use freq for channel preference */ /* for now just prefer 5Ghz band to all other bands */ PREFER(IEEE80211_IS_CHAN_5GHZ(a->base.se_chan), IEEE80211_IS_CHAN_5GHZ(b->base.se_chan), 1); } /* all things being equal, use signal level */ return a->base.se_rssi - b->base.se_rssi; #undef PREFER } /* * Check rate set suitability and return the best supported rate. * XXX inspect MCS for HT */ static int check_rate(struct ieee80211vap *vap, const struct ieee80211_channel *chan, const struct ieee80211_scan_entry *se) { const struct ieee80211_rateset *srs; int i, j, nrs, r, okrate, badrate, fixedrate, ucastrate; const uint8_t *rs; okrate = badrate = 0; srs = ieee80211_get_suprates(vap->iv_ic, chan); nrs = se->se_rates[1]; rs = se->se_rates+2; /* XXX MCS */ ucastrate = vap->iv_txparms[ieee80211_chan2mode(chan)].ucastrate; fixedrate = IEEE80211_FIXED_RATE_NONE; again: for (i = 0; i < nrs; i++) { r = IEEE80211_RV(rs[i]); badrate = r; /* * Check any fixed rate is included. */ if (r == ucastrate) fixedrate = r; /* * Check against our supported rates. */ for (j = 0; j < srs->rs_nrates; j++) if (r == IEEE80211_RV(srs->rs_rates[j])) { if (r > okrate) /* NB: track max */ okrate = r; break; } if (j == srs->rs_nrates && (rs[i] & IEEE80211_RATE_BASIC)) { /* * Don't try joining a BSS, if we don't support * one of its basic rates. */ okrate = 0; goto back; } } if (rs == se->se_rates+2) { /* scan xrates too; sort of an algol68-style for loop */ nrs = se->se_xrates[1]; rs = se->se_xrates+2; goto again; } back: if (okrate == 0 || ucastrate != fixedrate) return badrate | IEEE80211_RATE_BASIC; else return IEEE80211_RV(okrate); } static __inline int match_id(const uint8_t *ie, const uint8_t *val, int len) { return (ie[1] == len && memcmp(ie+2, val, len) == 0); } static int match_ssid(const uint8_t *ie, int nssid, const struct ieee80211_scan_ssid ssids[]) { int i; for (i = 0; i < nssid; i++) { if (match_id(ie, ssids[i].ssid, ssids[i].len)) return 1; } return 0; } #ifdef IEEE80211_SUPPORT_TDMA static int tdma_isfull(const struct ieee80211_tdma_param *tdma) { int slot, slotcnt; slotcnt = tdma->tdma_slotcnt; for (slot = slotcnt-1; slot >= 0; slot--) if (isclr(tdma->tdma_inuse, slot)) return 0; return 1; } #endif /* IEEE80211_SUPPORT_TDMA */ /* * Test a scan candidate for suitability/compatibility. */ static int match_bss(struct ieee80211vap *vap, const struct ieee80211_scan_state *ss, struct sta_entry *se0, int debug) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_scan_entry *se = &se0->base; uint8_t rate; int fail; fail = 0; if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, se->se_chan))) fail |= MATCH_CHANNEL; /* * NB: normally the desired mode is used to construct * the channel list, but it's possible for the scan * cache to include entries for stations outside this * list so we check the desired mode here to weed them * out. */ if (vap->iv_des_mode != IEEE80211_MODE_AUTO && (se->se_chan->ic_flags & IEEE80211_CHAN_ALLTURBO) != chanflags[vap->iv_des_mode]) fail |= MATCH_CHANNEL; if (vap->iv_opmode == IEEE80211_M_IBSS) { if ((se->se_capinfo & IEEE80211_CAPINFO_IBSS) == 0) fail |= MATCH_CAPINFO; #ifdef IEEE80211_SUPPORT_TDMA } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { /* * Adhoc demo network setup shouldn't really be scanning * but just in case skip stations operating in IBSS or * BSS mode. */ if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) fail |= MATCH_CAPINFO; /* * TDMA operation cannot coexist with a normal 802.11 network; * skip if IBSS or ESS capabilities are marked and require * the beacon have a TDMA ie present. */ if (vap->iv_caps & IEEE80211_C_TDMA) { const struct ieee80211_tdma_param *tdma = (const struct ieee80211_tdma_param *)se->se_ies.tdma_ie; const struct ieee80211_tdma_state *ts = vap->iv_tdma; if (tdma == NULL) fail |= MATCH_TDMA_NOIE; else if (tdma->tdma_version != ts->tdma_version) fail |= MATCH_TDMA_VERSION; else if (tdma->tdma_slot != 0) fail |= MATCH_TDMA_NOTMASTER; else if (tdma_isfull(tdma)) fail |= MATCH_TDMA_NOSLOT; #if 0 else if (ieee80211_local_address(se->se_macaddr)) fail |= MATCH_TDMA_LOCAL; #endif } #endif /* IEEE80211_SUPPORT_TDMA */ #ifdef IEEE80211_SUPPORT_MESH } else if (vap->iv_opmode == IEEE80211_M_MBSS) { const struct ieee80211_mesh_state *ms = vap->iv_mesh; /* * Mesh nodes have IBSS & ESS bits in capinfo turned off * and two special ie's that must be present. */ if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) fail |= MATCH_CAPINFO; else if (se->se_meshid[0] != IEEE80211_ELEMID_MESHID) fail |= MATCH_MESH_NOID; else if (ms->ms_idlen != 0 && match_id(se->se_meshid, ms->ms_id, ms->ms_idlen)) fail |= MATCH_MESHID; #endif } else { if ((se->se_capinfo & IEEE80211_CAPINFO_ESS) == 0) fail |= MATCH_CAPINFO; /* * If 11d is enabled and we're attempting to join a bss * that advertises it's country code then compare our * current settings to what we fetched from the country ie. * If our country code is unspecified or different then do * not attempt to join the bss. We should have already * dispatched an event to user space that identifies the * new country code so our regdomain config should match. */ if ((IEEE80211_IS_CHAN_11D(se->se_chan) || (vap->iv_flags_ext & IEEE80211_FEXT_DOTD)) && se->se_cc[0] != 0 && (ic->ic_regdomain.country == CTRY_DEFAULT || !isocmp(se->se_cc, ic->ic_regdomain.isocc))) fail |= MATCH_CC; } if (vap->iv_flags & IEEE80211_F_PRIVACY) { if ((se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0) fail |= MATCH_PRIVACY; } else { /* XXX does this mean privacy is supported or required? */ if (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) fail |= MATCH_PRIVACY; } se0->se_flags &= ~STA_DEMOTE11B; rate = check_rate(vap, se->se_chan, se); if (rate & IEEE80211_RATE_BASIC) { fail |= MATCH_RATE; /* * An 11b-only ap will give a rate mismatch if there is an * OFDM fixed tx rate for 11g. Try downgrading the channel * in the scan list to 11b and retry the rate check. */ if (IEEE80211_IS_CHAN_ANYG(se->se_chan)) { rate = check_rate(vap, demote11b(vap, se->se_chan), se); if ((rate & IEEE80211_RATE_BASIC) == 0) { fail &= ~MATCH_RATE; se0->se_flags |= STA_DEMOTE11B; } } } else if (rate < 2*24) { /* * This is an 11b-only ap. Check the desired mode in * case that needs to be honored (mode 11g filters out * 11b-only ap's). Otherwise force any 11g channel used * in scanning to be demoted. * * NB: we cheat a bit here by looking at the max rate; * we could/should check the rates. */ if (!(vap->iv_des_mode == IEEE80211_MODE_AUTO || vap->iv_des_mode == IEEE80211_MODE_11B)) fail |= MATCH_RATE; else se0->se_flags |= STA_DEMOTE11B; } if (ss->ss_nssid != 0 && !match_ssid(se->se_ssid, ss->ss_nssid, ss->ss_ssid)) fail |= MATCH_SSID; if ((vap->iv_flags & IEEE80211_F_DESBSSID) && !IEEE80211_ADDR_EQ(vap->iv_des_bssid, se->se_bssid)) fail |= MATCH_BSSID; if (se0->se_fails >= STA_FAILS_MAX) fail |= MATCH_FAILS; if (se0->se_notseen >= STA_PURGE_SCANS) fail |= MATCH_NOTSEEN; if (se->se_rssi < STA_RSSI_MIN) fail |= MATCH_RSSI; #ifdef IEEE80211_DEBUG if (ieee80211_msg(vap, debug)) { printf(" %c %s", fail & MATCH_FAILS ? '=' : fail & MATCH_NOTSEEN ? '^' : fail & MATCH_CC ? '$' : #ifdef IEEE80211_SUPPORT_TDMA fail & MATCH_TDMA_NOIE ? '&' : fail & MATCH_TDMA_VERSION ? 'v' : fail & MATCH_TDMA_NOTMASTER ? 's' : fail & MATCH_TDMA_NOSLOT ? 'f' : fail & MATCH_TDMA_LOCAL ? 'l' : #endif fail & MATCH_MESH_NOID ? 'm' : fail ? '-' : '+', ether_sprintf(se->se_macaddr)); printf(" %s%c", ether_sprintf(se->se_bssid), fail & MATCH_BSSID ? '!' : ' '); printf(" %3d%c", ieee80211_chan2ieee(ic, se->se_chan), fail & MATCH_CHANNEL ? '!' : ' '); printf(" %+4d%c", se->se_rssi, fail & MATCH_RSSI ? '!' : ' '); printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, fail & MATCH_RATE ? '!' : ' '); printf(" %4s%c", (se->se_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" : (se->se_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" : "", fail & MATCH_CAPINFO ? '!' : ' '); printf(" %3s%c ", (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no", fail & MATCH_PRIVACY ? '!' : ' '); ieee80211_print_essid(se->se_ssid+2, se->se_ssid[1]); printf("%s\n", fail & (MATCH_SSID | MATCH_MESHID) ? "!" : ""); } #endif return fail; } static void sta_update_notseen(struct sta_table *st) { struct sta_entry *se; IEEE80211_SCAN_TABLE_LOCK(st); TAILQ_FOREACH(se, &st->st_entry, se_list) { /* * If seen the reset and don't bump the count; * otherwise bump the ``not seen'' count. Note * that this insures that stations for which we * see frames while not scanning but not during * this scan will not be penalized. */ if (se->se_seen) se->se_seen = 0; else se->se_notseen++; } IEEE80211_SCAN_TABLE_UNLOCK(st); } static void sta_dec_fails(struct sta_table *st) { struct sta_entry *se; IEEE80211_SCAN_TABLE_LOCK(st); TAILQ_FOREACH(se, &st->st_entry, se_list) if (se->se_fails) se->se_fails--; IEEE80211_SCAN_TABLE_UNLOCK(st); } static struct sta_entry * select_bss(struct ieee80211_scan_state *ss, struct ieee80211vap *vap, int debug) { struct sta_table *st = ss->ss_priv; struct sta_entry *se, *selbs = NULL; IEEE80211_DPRINTF(vap, debug, " %s\n", "macaddr bssid chan rssi rate flag wep essid"); IEEE80211_SCAN_TABLE_LOCK(st); TAILQ_FOREACH(se, &st->st_entry, se_list) { ieee80211_ies_expand(&se->base.se_ies); if (match_bss(vap, ss, se, debug) == 0) { if (selbs == NULL) selbs = se; else if (sta_compare(se, selbs) > 0) selbs = se; } } IEEE80211_SCAN_TABLE_UNLOCK(st); return selbs; } /* * Pick an ap or ibss network to join or find a channel * to use to start an ibss network. */ static int sta_pick_bss(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; struct sta_entry *selbs; struct ieee80211_channel *chan; KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode %u", vap->iv_opmode)); if (st->st_newscan) { sta_update_notseen(st); st->st_newscan = 0; } if (ss->ss_flags & IEEE80211_SCAN_NOPICK) { /* * Manual/background scan, don't select+join the * bss, just return. The scanning framework will * handle notification that this has completed. */ ss->ss_flags &= ~IEEE80211_SCAN_NOPICK; IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: nopick; return 1\n", __func__); return 1; } /* * Automatic sequencing; look for a candidate and * if found join the network. */ /* NB: unlocked read should be ok */ if (TAILQ_FIRST(&st->st_entry) == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: no scan candidate, join=%d, return 0\n", __func__, !! (ss->ss_flags & IEEE80211_SCAN_NOJOIN)); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return 0; notfound: /* * If nothing suitable was found decrement * the failure counts so entries will be * reconsidered the next time around. We * really want to do this only for sta's * where we've previously had some success. */ sta_dec_fails(st); st->st_newscan = 1; return 0; /* restart scan */ } selbs = select_bss(ss, vap, IEEE80211_MSG_SCAN); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return (selbs != NULL); if (selbs == NULL) goto notfound; chan = selbs->base.se_chan; if (selbs->se_flags & STA_DEMOTE11B) chan = demote11b(vap, chan); if (!ieee80211_sta_join(vap, chan, &selbs->base)) goto notfound; IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: terminate scan; return 1\n", __func__); return 1; /* terminate scan */ } /* * Lookup an entry in the scan cache. We assume we're * called from the bottom half or such that we don't need * to block the bottom half so that it's safe to return * a reference to an entry w/o holding the lock on the table. */ static struct sta_entry * sta_lookup(struct sta_table *st, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct sta_entry *se; int hash = STA_HASH(macaddr); IEEE80211_SCAN_TABLE_LOCK(st); LIST_FOREACH(se, &st->st_hash[hash], se_hash) if (IEEE80211_ADDR_EQ(se->base.se_macaddr, macaddr)) break; IEEE80211_SCAN_TABLE_UNLOCK(st); return se; /* NB: unlocked */ } static void sta_roam_check(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni = vap->iv_bss; struct sta_table *st = ss->ss_priv; enum ieee80211_phymode mode; struct sta_entry *se, *selbs; uint8_t roamRate, curRate, ucastRate; int8_t roamRssi, curRssi; se = sta_lookup(st, ni->ni_macaddr); if (se == NULL) { /* XXX something is wrong */ return; } mode = ieee80211_chan2mode(ic->ic_bsschan); roamRate = vap->iv_roamparms[mode].rate; roamRssi = vap->iv_roamparms[mode].rssi; KASSERT(roamRate != 0 && roamRssi != 0, ("iv_roamparms are not" "initialized for %s mode!", ieee80211_phymode_name[mode])); ucastRate = vap->iv_txparms[mode].ucastrate; /* NB: the most up to date rssi is in the node, not the scan cache */ curRssi = ic->ic_node_getrssi(ni); if (ucastRate == IEEE80211_FIXED_RATE_NONE) { - curRate = ni->ni_txrate; + curRate = ieee80211_node_get_txrate_dot11rate(ni); IEEE80211_DPRINTF(vap, IEEE80211_MSG_ROAM, "%s: currssi %d currate %u roamrssi %d roamrate %u\n", __func__, curRssi, curRate, roamRssi, roamRate); } else { curRate = roamRate; /* NB: insure compare below fails */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_ROAM, "%s: currssi %d roamrssi %d\n", __func__, curRssi, roamRssi); } /* * Check if a new ap should be used and switch. * XXX deauth current ap */ if (curRate < roamRate || curRssi < roamRssi) { if (ieee80211_time_after(ticks, ic->ic_lastscan + vap->iv_scanvalid)) { /* * Scan cache contents are too old; force a scan now * if possible so we have current state to make a * decision with. We don't kick off a bg scan if * we're using dynamic turbo and boosted or if the * channel is busy. * XXX force immediate switch on scan complete */ if (!IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && ((vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) || ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle))) ieee80211_bg_scan(vap, 0); return; } se->base.se_rssi = curRssi; selbs = select_bss(ss, vap, IEEE80211_MSG_ROAM); if (selbs != NULL && selbs != se) { struct ieee80211_channel *chan; IEEE80211_DPRINTF(vap, IEEE80211_MSG_ROAM | IEEE80211_MSG_DEBUG, "%s: ROAM: curRate %u, roamRate %u, " "curRssi %d, roamRssi %d\n", __func__, curRate, roamRate, curRssi, roamRssi); chan = selbs->base.se_chan; if (selbs->se_flags & STA_DEMOTE11B) chan = demote11b(vap, chan); (void) ieee80211_sta_join(vap, chan, &selbs->base); } } } /* * Age entries in the scan cache. * XXX also do roaming since it's convenient */ static void sta_age(struct ieee80211_scan_state *ss) { struct ieee80211vap *vap = ss->ss_vap; adhoc_age(ss); /* * If rate control is enabled check periodically to see if * we should roam from our current connection to one that * might be better. This only applies when we're operating * in sta mode and automatic roaming is set. * XXX defer if busy * XXX repeater station * XXX do when !bgscan? */ KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode %u", vap->iv_opmode)); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO && (vap->iv_flags & IEEE80211_F_BGSCAN) && vap->iv_state >= IEEE80211_S_RUN) /* XXX vap is implicit */ sta_roam_check(ss, vap); } /* * Iterate over the entries in the scan cache, invoking * the callback function on each one. */ static void sta_iterate(struct ieee80211_scan_state *ss, ieee80211_scan_iter_func *f, void *arg) { struct sta_table *st = ss->ss_priv; struct sta_entry *se; u_int gen; IEEE80211_SCAN_ITER_LOCK(st); gen = st->st_scaniter++; restart: IEEE80211_SCAN_TABLE_LOCK(st); TAILQ_FOREACH(se, &st->st_entry, se_list) { if (se->se_scangen != gen) { se->se_scangen = gen; /* update public state */ se->base.se_age = ticks - se->se_lastupdate; IEEE80211_SCAN_TABLE_UNLOCK(st); (*f)(arg, &se->base); goto restart; } } IEEE80211_SCAN_TABLE_UNLOCK(st); IEEE80211_SCAN_ITER_UNLOCK(st); } static void sta_assoc_fail(struct ieee80211_scan_state *ss, const uint8_t macaddr[IEEE80211_ADDR_LEN], int reason) { struct sta_table *st = ss->ss_priv; struct sta_entry *se; se = sta_lookup(st, macaddr); if (se != NULL) { se->se_fails++; se->se_lastfail = ticks; IEEE80211_NOTE_MAC(ss->ss_vap, IEEE80211_MSG_SCAN, macaddr, "%s: reason %u fails %u", __func__, reason, se->se_fails); } } static void sta_assoc_success(struct ieee80211_scan_state *ss, const uint8_t macaddr[IEEE80211_ADDR_LEN]) { struct sta_table *st = ss->ss_priv; struct sta_entry *se; se = sta_lookup(st, macaddr); if (se != NULL) { #if 0 se->se_fails = 0; IEEE80211_NOTE_MAC(ss->ss_vap, IEEE80211_MSG_SCAN, macaddr, "%s: fails %u", __func__, se->se_fails); #endif se->se_lastassoc = ticks; } } static const struct ieee80211_scanner sta_default = { .scan_name = "default", .scan_attach = sta_attach, .scan_detach = sta_detach, .scan_start = sta_start, .scan_restart = sta_restart, .scan_cancel = sta_cancel, .scan_end = sta_pick_bss, .scan_flush = sta_flush, .scan_add = sta_add, .scan_age = sta_age, .scan_iterate = sta_iterate, .scan_assoc_fail = sta_assoc_fail, .scan_assoc_success = sta_assoc_success, }; IEEE80211_SCANNER_ALG(sta, IEEE80211_M_STA, sta_default); /* * Adhoc mode-specific support. */ static const uint16_t adhocWorld[] = /* 36, 40, 44, 48 */ { 5180, 5200, 5220, 5240 }; static const uint16_t adhocFcc3[] = /* 36, 40, 44, 48 145, 149, 153, 157, 161, 165 */ { 5180, 5200, 5220, 5240, 5725, 5745, 5765, 5785, 5805, 5825 }; static const uint16_t adhocMkk[] = /* 34, 38, 42, 46 */ { 5170, 5190, 5210, 5230 }; static const uint16_t adhoc11b[] = /* 10, 11 */ { 2457, 2462 }; static const struct scanlist adhocScanTable[] = { { IEEE80211_MODE_11B, X(adhoc11b) }, { IEEE80211_MODE_11A, X(adhocWorld) }, { IEEE80211_MODE_11A, X(adhocFcc3) }, { IEEE80211_MODE_11B, X(adhocMkk) }, { .list = NULL } }; #undef X /* * Start an adhoc-mode scan by populating the channel list. */ static int adhoc_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; makescanlist(ss, vap, adhocScanTable); if (ss->ss_mindwell == 0) ss->ss_mindwell = msecs_to_ticks(200); /* 200ms */ if (ss->ss_maxdwell == 0) ss->ss_maxdwell = msecs_to_ticks(200); /* 200ms */ st->st_scangen++; st->st_newscan = 1; return 0; } /* * Select a channel to start an adhoc network on. * The channel list was populated with appropriate * channels so select one that looks least occupied. */ static struct ieee80211_channel * adhoc_pick_channel(struct ieee80211_scan_state *ss, int flags) { struct sta_table *st = ss->ss_priv; struct sta_entry *se; struct ieee80211_channel *c, *bestchan; int i, bestrssi, maxrssi; bestchan = NULL; bestrssi = -1; IEEE80211_SCAN_TABLE_LOCK(st); for (i = 0; i < ss->ss_last; i++) { c = ss->ss_chans[i]; /* never consider a channel with radar */ if (IEEE80211_IS_CHAN_RADAR(c)) continue; /* skip channels disallowed by regulatory settings */ if (IEEE80211_IS_CHAN_NOADHOC(c)) continue; /* check channel attributes for band compatibility */ if (flags != 0 && (c->ic_flags & flags) != flags) continue; maxrssi = 0; TAILQ_FOREACH(se, &st->st_entry, se_list) { if (se->base.se_chan != c) continue; if (se->base.se_rssi > maxrssi) maxrssi = se->base.se_rssi; } if (bestchan == NULL || maxrssi < bestrssi) bestchan = c; } IEEE80211_SCAN_TABLE_UNLOCK(st); return bestchan; } /* * Pick an ibss network to join or find a channel * to use to start an ibss network. */ static int adhoc_pick_bss(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; struct sta_entry *selbs; struct ieee80211_channel *chan; struct ieee80211com *ic = vap->iv_ic; KASSERT(vap->iv_opmode == IEEE80211_M_IBSS || vap->iv_opmode == IEEE80211_M_AHDEMO || vap->iv_opmode == IEEE80211_M_MBSS, ("wrong opmode %u", vap->iv_opmode)); if (st->st_newscan) { sta_update_notseen(st); st->st_newscan = 0; } if (ss->ss_flags & IEEE80211_SCAN_NOPICK) { /* * Manual/background scan, don't select+join the * bss, just return. The scanning framework will * handle notification that this has completed. */ ss->ss_flags &= ~IEEE80211_SCAN_NOPICK; return 1; } /* * Automatic sequencing; look for a candidate and * if found join the network. */ /* NB: unlocked read should be ok */ if (TAILQ_FIRST(&st->st_entry) == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: no scan candidate\n", __func__); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return 0; notfound: /* NB: never auto-start a tdma network for slot !0 */ #ifdef IEEE80211_SUPPORT_TDMA if (vap->iv_des_nssid && ((vap->iv_caps & IEEE80211_C_TDMA) == 0 || ieee80211_tdma_getslot(vap) == 0)) { #else if (vap->iv_des_nssid) { #endif /* * No existing adhoc network to join and we have * an ssid; start one up. If no channel was * specified, try to select a channel. */ if (vap->iv_des_chan == IEEE80211_CHAN_ANYC || IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { chan = adhoc_pick_channel(ss, 0); } else chan = vap->iv_des_chan; if (chan != NULL) { /* * Create a HT capable IBSS; the per-node * probe request/response will result in * "correct" rate control capabilities being * negotiated. */ chan = ieee80211_ht_adjust_channel(ic, chan, vap->iv_flags_ht); chan = ieee80211_vht_adjust_channel(ic, chan, vap->iv_vht_flags); ieee80211_create_ibss(vap, chan); return 1; } } /* * If nothing suitable was found decrement * the failure counts so entries will be * reconsidered the next time around. We * really want to do this only for sta's * where we've previously had some success. */ sta_dec_fails(st); st->st_newscan = 1; return 0; /* restart scan */ } selbs = select_bss(ss, vap, IEEE80211_MSG_SCAN); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return (selbs != NULL); if (selbs == NULL) goto notfound; chan = selbs->base.se_chan; if (selbs->se_flags & STA_DEMOTE11B) chan = demote11b(vap, chan); /* * If HT is available, make it a possibility here. * The intent is to enable HT20/HT40 when joining a non-HT * IBSS node; we can then advertise HT IEs and speak HT * to any subsequent nodes that support it. */ chan = ieee80211_ht_adjust_channel(ic, chan, vap->iv_flags_ht); chan = ieee80211_vht_adjust_channel(ic, chan, vap->iv_vht_flags); if (!ieee80211_sta_join(vap, chan, &selbs->base)) goto notfound; return 1; /* terminate scan */ } /* * Age entries in the scan cache. */ static void adhoc_age(struct ieee80211_scan_state *ss) { struct sta_table *st = ss->ss_priv; struct sta_entry *se, *next; IEEE80211_SCAN_TABLE_LOCK(st); TAILQ_FOREACH_SAFE(se, &st->st_entry, se_list, next) { if (se->se_notseen > STA_PURGE_SCANS) { TAILQ_REMOVE(&st->st_entry, se, se_list); LIST_REMOVE(se, se_hash); ieee80211_ies_cleanup(&se->base.se_ies); IEEE80211_FREE(se, M_80211_SCAN); } } IEEE80211_SCAN_TABLE_UNLOCK(st); } static const struct ieee80211_scanner adhoc_default = { .scan_name = "default", .scan_attach = sta_attach, .scan_detach = sta_detach, .scan_start = adhoc_start, .scan_restart = sta_restart, .scan_cancel = sta_cancel, .scan_end = adhoc_pick_bss, .scan_flush = sta_flush, .scan_pickchan = adhoc_pick_channel, .scan_add = sta_add, .scan_age = adhoc_age, .scan_iterate = sta_iterate, .scan_assoc_fail = sta_assoc_fail, .scan_assoc_success = sta_assoc_success, }; IEEE80211_SCANNER_ALG(ibss, IEEE80211_M_IBSS, adhoc_default); IEEE80211_SCANNER_ALG(ahdemo, IEEE80211_M_AHDEMO, adhoc_default); static int ap_start(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; makescanlist(ss, vap, staScanTable); if (ss->ss_mindwell == 0) ss->ss_mindwell = msecs_to_ticks(200); /* 200ms */ if (ss->ss_maxdwell == 0) ss->ss_maxdwell = msecs_to_ticks(200); /* 200ms */ st->st_scangen++; st->st_newscan = 1; return 0; } /* * Cancel an ongoing scan. */ static int ap_cancel(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { return 0; } /* * Pick a quiet channel to use for ap operation. */ static struct ieee80211_channel * ap_pick_channel(struct ieee80211_scan_state *ss, int flags) { struct sta_table *st = ss->ss_priv; struct ieee80211_channel *bestchan = NULL; int i; /* XXX select channel more intelligently, e.g. channel spread, power */ /* NB: use scan list order to preserve channel preference */ for (i = 0; i < ss->ss_last; i++) { struct ieee80211_channel *chan = ss->ss_chans[i]; /* * If the channel is unoccupied the max rssi * should be zero; just take it. Otherwise * track the channel with the lowest rssi and * use that when all channels appear occupied. */ if (IEEE80211_IS_CHAN_RADAR(chan)) continue; if (IEEE80211_IS_CHAN_NOHOSTAP(chan)) continue; /* check channel attributes for band compatibility */ if (flags != 0 && (chan->ic_flags & flags) != flags) continue; KASSERT(sizeof(chan->ic_ieee) == 1, ("ic_chan size")); /* XXX channel have interference */ if (st->st_maxrssi[chan->ic_ieee] == 0) { /* XXX use other considerations */ return chan; } if (bestchan == NULL || st->st_maxrssi[chan->ic_ieee] < st->st_maxrssi[bestchan->ic_ieee]) bestchan = chan; } return bestchan; } /* * Pick a quiet channel to use for ap operation. */ static int ap_end(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *bestchan, *chan; KASSERT(vap->iv_opmode == IEEE80211_M_HOSTAP, ("wrong opmode %u", vap->iv_opmode)); bestchan = ap_pick_channel(ss, 0); if (bestchan == NULL) { /* no suitable channel, should not happen */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: no suitable channel! (should not happen)\n", __func__); /* XXX print something? */ return 0; /* restart scan */ } /* * If this is a dynamic turbo channel, start with the unboosted one. */ if (IEEE80211_IS_CHAN_TURBO(bestchan)) { bestchan = ieee80211_find_channel(ic, bestchan->ic_freq, bestchan->ic_flags & ~IEEE80211_CHAN_TURBO); if (bestchan == NULL) { /* should never happen ?? */ return 0; } } if (ss->ss_flags & (IEEE80211_SCAN_NOPICK | IEEE80211_SCAN_NOJOIN)) { /* * Manual/background scan, don't select+join the * bss, just return. The scanning framework will * handle notification that this has completed. */ ss->ss_flags &= ~IEEE80211_SCAN_NOPICK; return 1; } chan = ieee80211_ht_adjust_channel(ic, bestchan, vap->iv_flags_ht); chan = ieee80211_vht_adjust_channel(ic, chan, vap->iv_vht_flags); ieee80211_create_ibss(vap, chan); return 1; } static const struct ieee80211_scanner ap_default = { .scan_name = "default", .scan_attach = sta_attach, .scan_detach = sta_detach, .scan_start = ap_start, .scan_restart = sta_restart, .scan_cancel = ap_cancel, .scan_end = ap_end, .scan_flush = sta_flush, .scan_pickchan = ap_pick_channel, .scan_add = sta_add, .scan_age = adhoc_age, .scan_iterate = sta_iterate, .scan_assoc_success = sta_assoc_success, .scan_assoc_fail = sta_assoc_fail, }; IEEE80211_SCANNER_ALG(ap, IEEE80211_M_HOSTAP, ap_default); #ifdef IEEE80211_SUPPORT_MESH /* * Pick an mbss network to join or find a channel * to use to start an mbss network. */ static int mesh_pick_bss(struct ieee80211_scan_state *ss, struct ieee80211vap *vap) { struct sta_table *st = ss->ss_priv; struct ieee80211_mesh_state *ms = vap->iv_mesh; struct sta_entry *selbs; struct ieee80211_channel *chan; KASSERT(vap->iv_opmode == IEEE80211_M_MBSS, ("wrong opmode %u", vap->iv_opmode)); if (st->st_newscan) { sta_update_notseen(st); st->st_newscan = 0; } if (ss->ss_flags & IEEE80211_SCAN_NOPICK) { /* * Manual/background scan, don't select+join the * bss, just return. The scanning framework will * handle notification that this has completed. */ ss->ss_flags &= ~IEEE80211_SCAN_NOPICK; return 1; } /* * Automatic sequencing; look for a candidate and * if found join the network. */ /* NB: unlocked read should be ok */ if (TAILQ_FIRST(&st->st_entry) == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s: no scan candidate\n", __func__); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return 0; notfound: if (ms->ms_idlen != 0) { /* * No existing mbss network to join and we have * a meshid; start one up. If no channel was * specified, try to select a channel. */ if (vap->iv_des_chan == IEEE80211_CHAN_ANYC || IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { struct ieee80211com *ic = vap->iv_ic; /* XXX VHT */ chan = adhoc_pick_channel(ss, 0); if (chan != NULL) { chan = ieee80211_ht_adjust_channel(ic, chan, vap->iv_flags_ht); chan = ieee80211_vht_adjust_channel(ic, chan, vap->iv_vht_flags); } } else chan = vap->iv_des_chan; if (chan != NULL) { ieee80211_create_ibss(vap, chan); return 1; } } /* * If nothing suitable was found decrement * the failure counts so entries will be * reconsidered the next time around. We * really want to do this only for sta's * where we've previously had some success. */ sta_dec_fails(st); st->st_newscan = 1; return 0; /* restart scan */ } selbs = select_bss(ss, vap, IEEE80211_MSG_SCAN); if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) return (selbs != NULL); if (selbs == NULL) goto notfound; chan = selbs->base.se_chan; if (selbs->se_flags & STA_DEMOTE11B) chan = demote11b(vap, chan); if (!ieee80211_sta_join(vap, chan, &selbs->base)) goto notfound; return 1; /* terminate scan */ } static const struct ieee80211_scanner mesh_default = { .scan_name = "default", .scan_attach = sta_attach, .scan_detach = sta_detach, .scan_start = adhoc_start, .scan_restart = sta_restart, .scan_cancel = sta_cancel, .scan_end = mesh_pick_bss, .scan_flush = sta_flush, .scan_pickchan = adhoc_pick_channel, .scan_add = sta_add, .scan_age = adhoc_age, .scan_iterate = sta_iterate, .scan_assoc_fail = sta_assoc_fail, .scan_assoc_success = sta_assoc_success, }; IEEE80211_SCANNER_ALG(mesh, IEEE80211_M_MBSS, mesh_default); #endif /* IEEE80211_SUPPORT_MESH */ diff --git a/sys/net80211/ieee80211_sta.c b/sys/net80211/ieee80211_sta.c index 9e4e1013fd2f..96603f339710 100644 --- a/sys/net80211/ieee80211_sta.c +++ b/sys/net80211/ieee80211_sta.c @@ -1,2065 +1,2062 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * IEEE 802.11 Station mode support. */ #include "opt_inet.h" #include "opt_wlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IEEE80211_SUPPORT_SUPERG #include #endif #include #include #include -#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2) - static void sta_vattach(struct ieee80211vap *); static void sta_beacon_miss(struct ieee80211vap *); static int sta_newstate(struct ieee80211vap *, enum ieee80211_state, int); static int sta_input(struct ieee80211_node *, struct mbuf *, const struct ieee80211_rx_stats *, int, int); static void sta_recv_mgmt(struct ieee80211_node *, struct mbuf *, int subtype, const struct ieee80211_rx_stats *, int rssi, int nf); static void sta_recv_ctl(struct ieee80211_node *, struct mbuf *, int subtype); void ieee80211_sta_attach(struct ieee80211com *ic) { ic->ic_vattach[IEEE80211_M_STA] = sta_vattach; } void ieee80211_sta_detach(struct ieee80211com *ic) { } static void sta_vdetach(struct ieee80211vap *vap) { } static void sta_vattach(struct ieee80211vap *vap) { vap->iv_newstate = sta_newstate; vap->iv_input = sta_input; vap->iv_recv_mgmt = sta_recv_mgmt; vap->iv_recv_ctl = sta_recv_ctl; vap->iv_opdetach = sta_vdetach; vap->iv_bmiss = sta_beacon_miss; } /* * Handle a beacon miss event. The common code filters out * spurious events that can happen when scanning and/or before * reaching RUN state. */ static void sta_beacon_miss(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; IEEE80211_LOCK_ASSERT(ic); KASSERT((ic->ic_flags & IEEE80211_F_SCAN) == 0, ("scanning")); KASSERT(vap->iv_state >= IEEE80211_S_RUN, ("wrong state %s", ieee80211_state_name[vap->iv_state])); IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG, "beacon miss, mode %s state %s\n", ieee80211_opmode_name[vap->iv_opmode], ieee80211_state_name[vap->iv_state]); if (vap->iv_state == IEEE80211_S_CSA) { /* * A Channel Switch is pending; assume we missed the * beacon that would've completed the process and just * force the switch. If we made a mistake we'll not * find the AP on the new channel and fall back to a * normal scan. */ ieee80211_csa_completeswitch(ic); return; } if (++vap->iv_bmiss_count < vap->iv_bmiss_max) { /* * Send a directed probe req before falling back to a * scan; if we receive a response ic_bmiss_count will * be reset. Some cards mistakenly report beacon miss * so this avoids the expensive scan if the ap is * still there. */ ieee80211_send_probereq(vap->iv_bss, vap->iv_myaddr, vap->iv_bss->ni_bssid, vap->iv_bss->ni_bssid, vap->iv_bss->ni_essid, vap->iv_bss->ni_esslen); return; } callout_stop(&vap->iv_swbmiss); vap->iv_bmiss_count = 0; vap->iv_stats.is_beacon_miss++; if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { #ifdef IEEE80211_SUPPORT_SUPERG /* * If we receive a beacon miss interrupt when using * dynamic turbo, attempt to switch modes before * reassociating. */ if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_NODE_TURBOP)) ieee80211_dturbo_switch(vap, ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO); #endif /* * Try to reassociate before scanning for a new ap. */ ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1); } else { /* * Somebody else is controlling state changes (e.g. * a user-mode app) don't do anything that would * confuse them; just drop into scan mode so they'll * notified of the state change and given control. */ ieee80211_new_state(vap, IEEE80211_S_SCAN, 0); } } /* * Handle deauth with reason. We retry only for * the cases where we might succeed. Otherwise * we downgrade the ap and scan. */ static void sta_authretry(struct ieee80211vap *vap, struct ieee80211_node *ni, int reason) { switch (reason) { case IEEE80211_STATUS_SUCCESS: /* NB: MLME assoc */ case IEEE80211_STATUS_TIMEOUT: case IEEE80211_REASON_ASSOC_EXPIRE: case IEEE80211_REASON_NOT_AUTHED: case IEEE80211_REASON_NOT_ASSOCED: case IEEE80211_REASON_ASSOC_LEAVE: case IEEE80211_REASON_ASSOC_NOT_AUTHED: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); break; default: ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, reason); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) ieee80211_check_scan_current(vap); break; } } static void sta_swbmiss_start(struct ieee80211vap *vap) { if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) { /* * Start s/w beacon miss timer for devices w/o * hardware support. We fudge a bit here since * we're doing this in software. */ vap->iv_swbmiss_period = IEEE80211_TU_TO_TICKS( 2 * vap->iv_bmissthreshold * vap->iv_bss->ni_intval); vap->iv_swbmiss_count = 0; callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period, ieee80211_swbmiss, vap); } } /* * IEEE80211_M_STA vap state machine handler. * This routine handles the main states in the 802.11 protocol. */ static int sta_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_node *ni; enum ieee80211_state ostate; IEEE80211_LOCK_ASSERT(ic); ostate = vap->iv_state; IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg); vap->iv_state = nstate; /* state transition */ callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */ if (ostate != IEEE80211_S_SCAN) ieee80211_cancel_scan(vap); /* background scan */ ni = vap->iv_bss; /* NB: no reference held */ if (vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) callout_stop(&vap->iv_swbmiss); switch (nstate) { case IEEE80211_S_INIT: switch (ostate) { case IEEE80211_S_SLEEP: /* XXX wakeup */ /* XXX driver hook to wakeup the hardware? */ case IEEE80211_S_RUN: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC, IEEE80211_REASON_ASSOC_LEAVE); ieee80211_sta_leave(ni); break; case IEEE80211_S_ASSOC: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH, IEEE80211_REASON_AUTH_LEAVE); break; case IEEE80211_S_SCAN: ieee80211_cancel_scan(vap); break; default: break; } if (ostate != IEEE80211_S_INIT) { /* NB: optimize INIT -> INIT case */ ieee80211_reset_bss(vap); } if (vap->iv_auth->ia_detach != NULL) vap->iv_auth->ia_detach(vap); break; case IEEE80211_S_SCAN: switch (ostate) { case IEEE80211_S_INIT: /* * Initiate a scan. We can come here as a result * of an IEEE80211_IOC_SCAN_REQ too in which case * the vap will be marked with IEEE80211_FEXT_SCANREQ * and the scan request parameters will be present * in iv_scanreq. Otherwise we do the default. */ if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) { ieee80211_check_scan(vap, vap->iv_scanreq_flags, vap->iv_scanreq_duration, vap->iv_scanreq_mindwell, vap->iv_scanreq_maxdwell, vap->iv_scanreq_nssid, vap->iv_scanreq_ssid); vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ; } else ieee80211_check_scan_current(vap); break; case IEEE80211_S_SCAN: case IEEE80211_S_AUTH: case IEEE80211_S_ASSOC: /* * These can happen either because of a timeout * on an assoc/auth response or because of a * change in state that requires a reset. For * the former we're called with a non-zero arg * that is the cause for the failure; pass this * to the scan code so it can update state. * Otherwise trigger a new scan unless we're in * manual roaming mode in which case an application * must issue an explicit scan request. */ if (arg != 0) ieee80211_scan_assoc_fail(vap, vap->iv_bss->ni_macaddr, arg); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) ieee80211_check_scan_current(vap); break; case IEEE80211_S_SLEEP: /* beacon miss */ /* * XXX if in sleep we need to wakeup the hardware. */ /* FALLTHROUGH */ case IEEE80211_S_RUN: /* beacon miss */ /* * Beacon miss. Notify user space and if not * under control of a user application (roaming * manual) kick off a scan to re-connect. */ ieee80211_sta_leave(ni); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) ieee80211_check_scan_current(vap); break; default: goto invalid; } break; case IEEE80211_S_AUTH: switch (ostate) { case IEEE80211_S_INIT: case IEEE80211_S_SCAN: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); break; case IEEE80211_S_AUTH: case IEEE80211_S_ASSOC: switch (arg & 0xff) { case IEEE80211_FC0_SUBTYPE_AUTH: /* ??? */ IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 2); break; case IEEE80211_FC0_SUBTYPE_DEAUTH: sta_authretry(vap, ni, arg>>8); break; } break; case IEEE80211_S_SLEEP: case IEEE80211_S_RUN: switch (arg & 0xff) { case IEEE80211_FC0_SUBTYPE_AUTH: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 2); vap->iv_state = IEEE80211_S_RUN; /* stay RUN */ break; case IEEE80211_FC0_SUBTYPE_DEAUTH: ieee80211_sta_leave(ni); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { /* try to reauth */ IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, 1); } break; } break; default: goto invalid; } break; case IEEE80211_S_ASSOC: switch (ostate) { case IEEE80211_S_AUTH: case IEEE80211_S_ASSOC: IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); break; case IEEE80211_S_SLEEP: /* cannot happen */ case IEEE80211_S_RUN: ieee80211_sta_leave(ni); if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { IEEE80211_SEND_MGMT(ni, arg ? IEEE80211_FC0_SUBTYPE_REASSOC_REQ : IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0); } break; default: goto invalid; } break; case IEEE80211_S_RUN: if (vap->iv_flags & IEEE80211_F_WPA) { /* XXX validate prerequisites */ } switch (ostate) { case IEEE80211_S_RUN: case IEEE80211_S_CSA: break; case IEEE80211_S_AUTH: /* when join is done in fw */ case IEEE80211_S_ASSOC: #ifdef IEEE80211_DEBUG if (ieee80211_msg_debug(vap)) { ieee80211_note(vap, "%s with %s ssid ", (vap->iv_opmode == IEEE80211_M_STA ? "associated" : "synchronized"), ether_sprintf(ni->ni_bssid)); ieee80211_print_essid(vap->iv_bss->ni_essid, ni->ni_esslen); - /* XXX MCS/HT */ - printf(" channel %d start %uMb\n", + printf(" channel %d start %uMbit/s\n", ieee80211_chan2ieee(ic, ic->ic_curchan), - IEEE80211_RATE2MBS(ni->ni_txrate)); + ieee80211_node_get_txrate_kbit(ni) / 1000); } #endif ieee80211_scan_assoc_success(vap, ni->ni_macaddr); ieee80211_notify_node_join(ni, arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP); break; case IEEE80211_S_SLEEP: /* Wake up from sleep */ vap->iv_sta_ps(vap, 0); break; default: goto invalid; } ieee80211_sync_curchan(ic); if (ostate != IEEE80211_S_RUN) sta_swbmiss_start(vap); /* * When 802.1x is not in use mark the port authorized * at this point so traffic can flow. */ if (ni->ni_authmode != IEEE80211_AUTH_8021X) ieee80211_node_authorize(ni); /* * Fake association when joining an existing bss. * * Don't do this if we're doing SLEEP->RUN. */ if (ic->ic_newassoc != NULL && ostate != IEEE80211_S_SLEEP) ic->ic_newassoc(vap->iv_bss, (ostate != IEEE80211_S_RUN)); break; case IEEE80211_S_CSA: if (ostate != IEEE80211_S_RUN) goto invalid; break; case IEEE80211_S_SLEEP: sta_swbmiss_start(vap); vap->iv_sta_ps(vap, 1); break; default: invalid: IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: unexpected state transition %s -> %s\n", __func__, ieee80211_state_name[ostate], ieee80211_state_name[nstate]); break; } return 0; } /* * Return non-zero if the frame is an echo of a multicast * frame sent by ourself. The dir is known to be DSTODS. */ static __inline int isdstods_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) { #define QWH4(wh) ((const struct ieee80211_qosframe_addr4 *)wh) #define WH4(wh) ((const struct ieee80211_frame_addr4 *)wh) const uint8_t *sa; KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) return 0; sa = IEEE80211_QOS_HAS_SEQ(wh) ? QWH4(wh)->i_addr4 : WH4(wh)->i_addr4; return IEEE80211_ADDR_EQ(sa, vap->iv_myaddr); #undef WH4 #undef QWH4 } /* * Return non-zero if the frame is an echo of a multicast * frame sent by ourself. The dir is known to be FROMDS. */ static __inline int isfromds_mcastecho(struct ieee80211vap *vap, const struct ieee80211_frame *wh) { KASSERT(vap->iv_opmode == IEEE80211_M_STA, ("wrong mode")); if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) return 0; return IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_myaddr); } /* * Decide if a received management frame should be * printed when debugging is enabled. This filters some * of the less interesting frames that come frequently * (e.g. beacons). */ static __inline int doprint(struct ieee80211vap *vap, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BEACON: return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN); case IEEE80211_FC0_SUBTYPE_PROBE_REQ: return 0; } return 1; } /* * Process a received frame. The node associated with the sender * should be supplied. If nothing was found in the node table then * the caller is assumed to supply a reference to iv_bss instead. * The RSSI and a timestamp are also supplied. The RSSI data is used * during AP scanning to select a AP to associate with; it can have * any units so long as values have consistent units and higher values * mean ``better signal''. The receive timestamp is currently not used * by the 802.11 layer. */ static int sta_input(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ifnet *ifp = vap->iv_ifp; struct ieee80211_frame *wh; struct ieee80211_key *key; struct ether_header *eh; int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ uint8_t dir, type, subtype, qos; uint8_t *bssid; int is_hw_decrypted = 0; int has_decrypted = 0; KASSERT(ni != NULL, ("%s: null node, mbuf %p", __func__, m)); /* Early init in case of early error case. */ type = -1; /* * Bit of a cheat here, we use a pointer for a 3-address * frame format but don't reference fields past outside * ieee80211_frame_min (or other shorter frames) w/o first * validating the data is present. */ wh = mtod(m, struct ieee80211_frame *); if (m->m_pkthdr.len < 2 || m->m_pkthdr.len < ieee80211_anyhdrsize(wh)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "too short (1): len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto err; } if (!IEEE80211_IS_FC0_CHECK_VER(wh, IEEE80211_FC0_VERSION_0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x", wh->i_fc[0], wh->i_fc[1]); vap->iv_stats.is_rx_badversion++; goto err; } /* * Some devices do hardware decryption all the way through * to pretending the frame wasn't encrypted in the first place. * So, tag it appropriately so it isn't discarded inappropriately. */ if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED)) is_hw_decrypted = 1; if (m->m_flags & M_AMPDU_MPDU) { /* * Fastpath for A-MPDU reorder q resubmission. Frames * w/ M_AMPDU_MPDU marked have already passed through * here but were received out of order and been held on * the reorder queue. When resubmitted they are marked * with the M_AMPDU_MPDU flag and we can bypass most of * the normal processing. */ type = IEEE80211_FC0_TYPE_DATA; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; subtype = IEEE80211_FC0_SUBTYPE_QOS_DATA; hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ goto resubmit_ampdu; } ni->ni_inact = ni->ni_inact_reload; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; /* * Control frames are not folowing the header scheme of data and mgmt * frames so we do not apply extra checks here. * We probably should do checks on RA (+TA) where available for those * too, but for now do not drop them. */ if (type != IEEE80211_FC0_TYPE_CTL && (ic->ic_flags & IEEE80211_F_SCAN) == 0) { bssid = wh->i_addr2; if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { /* not interested in */ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, bssid, NULL, "%s", "not to bss"); vap->iv_stats.is_rx_wrongbss++; goto out; } /* * Some devices may be in a promiscuous mode * where they receive frames for multiple station * addresses. * * If we receive a data frame that isn't * destined to our VAP MAC, drop it. * * XXX TODO: This is only enforced when not scanning; * XXX it assumes a software-driven scan will put the NIC * XXX into a "no data frames" mode before setting this * XXX flag. Otherwise it may be possible that we'll still * XXX process data frames whilst scanning. */ if ((! IEEE80211_IS_MULTICAST(wh->i_addr1)) && (! IEEE80211_ADDR_EQ(wh->i_addr1, IF_LLADDR(ifp)))) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, bssid, NULL, "not to cur sta: lladdr=%6D, addr1=%6D", IF_LLADDR(ifp), ":", wh->i_addr1, ":"); vap->iv_stats.is_rx_wrongbss++; goto out; } IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; if ( IEEE80211_HAS_SEQ(type, subtype) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { uint8_t tid = ieee80211_gettid(wh); if (IEEE80211_QOS_HAS_SEQ(wh) && TID_TO_WME_AC(tid) >= WME_AC_VI) ic->ic_wme.wme_hipri_traffic++; if (! ieee80211_check_rxseq(ni, wh, bssid, rxs)) goto out; } } switch (type) { case IEEE80211_FC0_TYPE_DATA: hdrspace = ieee80211_hdrspace(ic, wh); if (m->m_len < hdrspace && (m = m_pullup(m, hdrspace)) == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, NULL, "data too short: expecting %u", hdrspace); vap->iv_stats.is_rx_tooshort++; goto out; /* XXX */ } /* * Handle A-MPDU re-ordering. If the frame is to be * processed directly then ieee80211_ampdu_reorder * will return 0; otherwise it has consumed the mbuf * and we should do nothing more with it. */ if ((m->m_flags & M_AMPDU) && (dir == IEEE80211_FC1_DIR_FROMDS || dir == IEEE80211_FC1_DIR_DSTODS) && ieee80211_ampdu_reorder(ni, m, rxs) != 0) { m = NULL; goto out; } resubmit_ampdu: if (dir == IEEE80211_FC1_DIR_FROMDS) { if ((ifp->if_flags & IFF_SIMPLEX) && isfromds_mcastecho(vap, wh)) { /* * In IEEE802.11 network, multicast * packets sent from "me" are broadcast * from the AP; silently discard for * SIMPLEX interface. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "%s", "multicast echo"); vap->iv_stats.is_rx_mcastecho++; goto out; } if ((vap->iv_flags & IEEE80211_F_DWDS) && IEEE80211_IS_MULTICAST(wh->i_addr1)) { /* * DWDS sta's must drop 3-address mcast frames * as they will be sent separately as a 4-addr * frame. Accepting the 3-addr frame will * confuse the bridge into thinking the sending * sta is located at the end of WDS link. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "3-address data", "%s", "DWDS enabled"); vap->iv_stats.is_rx_mcastecho++; goto out; } } else if (dir == IEEE80211_FC1_DIR_DSTODS) { if ((vap->iv_flags & IEEE80211_F_DWDS) == 0) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "4-address data", "%s", "DWDS not enabled"); vap->iv_stats.is_rx_wrongdir++; goto out; } if ((ifp->if_flags & IFF_SIMPLEX) && isdstods_mcastecho(vap, wh)) { /* * In IEEE802.11 network, multicast * packets sent from "me" are broadcast * from the AP; silently discard for * SIMPLEX interface. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "4-address data", "%s", "multicast echo"); vap->iv_stats.is_rx_mcastecho++; goto out; } } else { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto out; } /* * Handle privacy requirements for hardware decryption * devices. * * For those devices, a handful of things happen. * * + If IV has been stripped, then we can't run * ieee80211_crypto_decap() - none of the key * + If MIC has been stripped, we can't validate * MIC here. * + If MIC fails, then we need to communicate a * MIC failure up to the stack - but we don't know * which key was used. */ /* * Handle privacy requirements. Note that we * must not be preempted from here until after * we (potentially) call ieee80211_crypto_demic; * otherwise we may violate assumptions in the * crypto cipher modules used to do delayed update * of replay sequence numbers. */ if (is_hw_decrypted || IEEE80211_IS_PROTECTED(wh)) { if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { /* * Discard encrypted frames when privacy is off. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "WEP", "%s", "PRIVACY off"); vap->iv_stats.is_rx_noprivacy++; IEEE80211_NODE_STAT(ni, rx_noprivacy); goto out; } if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) { /* NB: stats+msgs handled in crypto_decap */ IEEE80211_NODE_STAT(ni, rx_wepfail); goto out; } wh = mtod(m, struct ieee80211_frame *); wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; has_decrypted = 1; } else { /* XXX M_WEP and IEEE80211_F_PRIVACY */ key = NULL; } /* * Save QoS bits for use below--before we strip the header. */ if (subtype == IEEE80211_FC0_SUBTYPE_QOS_DATA) qos = ieee80211_getqos(wh)[0]; else qos = 0; /* * Next up, any fragmentation. */ if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { m = ieee80211_defrag(ni, m, hdrspace, has_decrypted); if (m == NULL) { /* Fragment dropped or frame not complete yet */ goto out; } } wh = NULL; /* no longer valid, catch any uses */ /* * Next strip any MSDU crypto bits. * * Note: we can't do MIC stripping/verification if the * upper layer has stripped it. We have to check MIC * ourselves. So, key may be NULL, but we have to check * the RX status. */ if (!ieee80211_crypto_demic(vap, key, m, 0)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "demic error"); vap->iv_stats.is_rx_demicfail++; IEEE80211_NODE_STAT(ni, rx_demicfail); goto out; } /* copy to listener after decrypt */ if (ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); need_tap = 0; /* * Finally, strip the 802.11 header. */ m = ieee80211_decap(vap, m, hdrspace, qos); if (m == NULL) { /* XXX mask bit to check for both */ /* don't count Null data frames as errors */ if (subtype == IEEE80211_FC0_SUBTYPE_NODATA || subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL) goto out; IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "%s", "decap error"); vap->iv_stats.is_rx_decap++; IEEE80211_NODE_STAT(ni, rx_decap); goto err; } if (!(qos & IEEE80211_QOS_AMSDU)) eh = mtod(m, struct ether_header *); else eh = NULL; if (!ieee80211_node_is_authorized(ni)) { /* * Deny any non-PAE frames received prior to * authorization. For open/shared-key * authentication the port is mark authorized * after authentication completes. For 802.1x * the port is not marked authorized by the * authenticator until the handshake has completed. */ if (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ni->ni_macaddr, "data", "unauthorized or " "unknown port: ether type 0x%x len %u", eh == NULL ? -1 : eh->ether_type, m->m_pkthdr.len); vap->iv_stats.is_rx_unauth++; IEEE80211_NODE_STAT(ni, rx_unauth); goto err; } } else { /* * When denying unencrypted frames, discard * any non-PAE frames received without encryption. */ if ((vap->iv_flags & IEEE80211_F_DROPUNENC) && ((has_decrypted == 0) && (m->m_flags & M_WEP) == 0) && (is_hw_decrypted == 0) && (eh == NULL || eh->ether_type != htons(ETHERTYPE_PAE))) { /* * Drop unencrypted frames. */ vap->iv_stats.is_rx_unencrypted++; IEEE80211_NODE_STAT(ni, rx_unencrypted); goto out; } } /* XXX require HT? */ if (qos & IEEE80211_QOS_AMSDU) { m = ieee80211_decap_amsdu(ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; } else { #ifdef IEEE80211_SUPPORT_SUPERG m = ieee80211_decap_fastframe(vap, ni, m); if (m == NULL) return IEEE80211_FC0_TYPE_DATA; #endif } ieee80211_deliver_data(vap, ni, m); return IEEE80211_FC0_TYPE_DATA; case IEEE80211_FC0_TYPE_MGT: vap->iv_stats.is_rx_mgmt++; IEEE80211_NODE_STAT(ni, rx_mgmt); if (dir != IEEE80211_FC1_DIR_NODS) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "data", "incorrect dir 0x%x", dir); vap->iv_stats.is_rx_wrongdir++; goto err; } if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "mgt", "too short: len %u", m->m_pkthdr.len); vap->iv_stats.is_rx_tooshort++; goto out; } #ifdef IEEE80211_DEBUG if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) || ieee80211_msg_dumppkts(vap)) { if_printf(ifp, "received %s from %s rssi %d\n", ieee80211_mgt_subtype_name(subtype), ether_sprintf(wh->i_addr2), rssi); } #endif /* * Note: See above for hardware offload privacy requirements. * It also applies here. */ /* * Again, having encrypted flag set check would be good, but * then we have to also handle crypto_decap() like above. */ if (IEEE80211_IS_PROTECTED(wh)) { if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) { /* * Only shared key auth frames with a challenge * should be encrypted, discard all others. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, ieee80211_mgt_subtype_name(subtype), "%s", "WEP set but not permitted"); vap->iv_stats.is_rx_mgtdiscard++; /* XXX */ goto out; } if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { /* * Discard encrypted frames when privacy is off. */ IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, "mgt", "%s", "WEP set but PRIVACY off"); vap->iv_stats.is_rx_noprivacy++; goto out; } hdrspace = ieee80211_hdrspace(ic, wh); /* * Again, if IV/MIC was stripped, then this whole * setup will fail. That's going to need some poking. */ if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) { /* NB: stats+msgs handled in crypto_decap */ goto out; } has_decrypted = 1; wh = mtod(m, struct ieee80211_frame *); wh->i_fc[1] &= ~IEEE80211_FC1_PROTECTED; } vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); goto out; case IEEE80211_FC0_TYPE_CTL: vap->iv_stats.is_rx_ctl++; IEEE80211_NODE_STAT(ni, rx_ctrl); vap->iv_recv_ctl(ni, m, subtype); goto out; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, NULL, "bad frame type 0x%x", type); /* should not come here */ break; } err: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); out: if (m != NULL) { if (need_tap && ieee80211_radiotap_active_vap(vap)) ieee80211_radiotap_rx(vap, m); m_freem(m); } return type; } static void sta_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh, int rssi, int nf, uint16_t seq, uint16_t status) { struct ieee80211vap *vap = ni->ni_vap; if (ni->ni_authmode == IEEE80211_AUTH_SHARED) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "open auth", "bad sta auth mode %u", ni->ni_authmode); vap->iv_stats.is_rx_bad_auth++; /* XXX */ return; } if (vap->iv_state != IEEE80211_S_AUTH || seq != IEEE80211_AUTH_OPEN_RESPONSE) { vap->iv_stats.is_rx_bad_auth++; return; } if (status != 0) { IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni, "open auth failed (reason %d)", status); vap->iv_stats.is_rx_auth_fail++; vap->iv_stats.is_rx_authfail_code = status; ieee80211_new_state(vap, IEEE80211_S_SCAN, IEEE80211_SCAN_FAIL_STATUS); } else ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); } static void sta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh, uint8_t *frm, uint8_t *efrm, int rssi, int nf, uint16_t seq, uint16_t status) { struct ieee80211vap *vap = ni->ni_vap; uint8_t *challenge; /* * NB: this can happen as we allow pre-shared key * authentication to be enabled w/o wep being turned * on so that configuration of these can be done * in any order. It may be better to enforce the * ordering in which case this check would just be * for sanity/consistency. */ if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "%s", " PRIVACY is disabled"); goto bad; } /* * Pre-shared key authentication is evil; accept * it only if explicitly configured (it is supported * mainly for compatibility with clients like OS X). */ if (ni->ni_authmode != IEEE80211_AUTH_AUTO && ni->ni_authmode != IEEE80211_AUTH_SHARED) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "bad sta auth mode %u", ni->ni_authmode); vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */ goto bad; } challenge = NULL; if (frm + 1 < efrm) { if ((frm[1] + 2) > (efrm - frm)) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "ie %d/%d too long", frm[0], (frm[1] + 2) - (efrm - frm)); vap->iv_stats.is_rx_bad_auth++; goto bad; } if (*frm == IEEE80211_ELEMID_CHALLENGE) challenge = frm; frm += frm[1] + 2; } switch (seq) { case IEEE80211_AUTH_SHARED_CHALLENGE: case IEEE80211_AUTH_SHARED_RESPONSE: if (challenge == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "%s", "no challenge"); vap->iv_stats.is_rx_bad_auth++; goto bad; } if (challenge[1] != IEEE80211_CHALLENGE_LEN) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH, ni->ni_macaddr, "shared key auth", "bad challenge len %d", challenge[1]); vap->iv_stats.is_rx_bad_auth++; goto bad; } default: break; } if (vap->iv_state != IEEE80211_S_AUTH) return; switch (seq) { case IEEE80211_AUTH_SHARED_PASS: if (ni->ni_challenge != NULL) { IEEE80211_FREE(ni->ni_challenge, M_80211_NODE); ni->ni_challenge = NULL; } if (status != 0) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, wh, "shared key auth failed (reason %d)", status); vap->iv_stats.is_rx_auth_fail++; vap->iv_stats.is_rx_authfail_code = status; return; } ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); break; case IEEE80211_AUTH_SHARED_CHALLENGE: if (!ieee80211_alloc_challenge(ni)) return; /* XXX could optimize by passing recvd challenge */ memcpy(ni->ni_challenge, &challenge[2], challenge[1]); IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, seq + 1); break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH, wh, "shared key auth", "bad seq %d", seq); vap->iv_stats.is_rx_bad_auth++; return; } return; bad: /* * Kick the state machine. This short-circuits * using the mgt frame timeout to trigger the * state transition. */ if (vap->iv_state == IEEE80211_S_AUTH) ieee80211_new_state(vap, IEEE80211_S_SCAN, IEEE80211_SCAN_FAIL_STATUS); } /* * Parse the WME IE for QoS and U-APSD information. * * Returns -1 if the IE isn't found, 1 if it's found. */ int ieee80211_parse_wmeie(uint8_t *frm, const struct ieee80211_frame *wh, struct ieee80211_node *ni) { u_int len = frm[1]; ni->ni_uapsd = 0; if (len < sizeof(struct ieee80211_wme_param)-2) { IEEE80211_DISCARD_IE(ni->ni_vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, wh, "WME", "too short, len %u", len); return -1; } ni->ni_uapsd = frm[WME_CAPINFO_IE_OFFSET]; IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_POWER | IEEE80211_MSG_ASSOC, ni, "U-APSD settings from STA: 0x%02x", ni->ni_uapsd); return 1; } int ieee80211_parse_wmeparams(struct ieee80211vap *vap, uint8_t *frm, const struct ieee80211_frame *wh, uint8_t *qosinfo) { struct ieee80211_wme_state *wme = &vap->iv_ic->ic_wme; u_int len = frm[1], qosinfo_count; int i; *qosinfo = 0; if (len < sizeof(struct ieee80211_wme_param)-2) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_WME, wh, "WME", "too short, len %u", len); return -1; } *qosinfo = frm[__offsetof(struct ieee80211_wme_param, param_qosInfo)]; qosinfo_count = *qosinfo & WME_QOSINFO_COUNT; /* XXX do proper check for wraparound */ if (qosinfo_count == wme->wme_wmeChanParams.cap_info) return 0; frm += __offsetof(struct ieee80211_wme_param, params_acParams); for (i = 0; i < WME_NUM_AC; i++) { struct wmeParams *wmep = &wme->wme_wmeChanParams.cap_wmeParams[i]; /* NB: ACI not used */ wmep->wmep_acm = _IEEE80211_MASKSHIFT(frm[0], WME_PARAM_ACM); wmep->wmep_aifsn = _IEEE80211_MASKSHIFT(frm[0], WME_PARAM_AIFSN); wmep->wmep_logcwmin = _IEEE80211_MASKSHIFT(frm[1], WME_PARAM_LOGCWMIN); wmep->wmep_logcwmax = _IEEE80211_MASKSHIFT(frm[1], WME_PARAM_LOGCWMAX); wmep->wmep_txopLimit = le16dec(frm+2); IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME, "%s: WME: %d: acm=%d aifsn=%d logcwmin=%d logcwmax=%d txopLimit=%d\n", __func__, i, wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin, wmep->wmep_logcwmax, wmep->wmep_txopLimit); frm += 4; } wme->wme_wmeChanParams.cap_info = qosinfo_count; return 1; } /* * Process 11h Channel Switch Announcement (CSA) ie. If this * is the first CSA then initiate the switch. Otherwise we * track state and trigger completion and/or cancel of the switch. * XXX should be public for IBSS use */ static void ieee80211_parse_csaparams(struct ieee80211vap *vap, uint8_t *frm, const struct ieee80211_frame *wh) { struct ieee80211com *ic = vap->iv_ic; const struct ieee80211_csa_ie *csa = (const struct ieee80211_csa_ie *) frm; KASSERT(vap->iv_state >= IEEE80211_S_RUN, ("state %s", ieee80211_state_name[vap->iv_state])); if (csa->csa_mode > 1) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, wh, "CSA", "invalid mode %u", csa->csa_mode); return; } IEEE80211_LOCK(ic); if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0) { /* * Convert the channel number to a channel reference. We * try first to preserve turbo attribute of the current * channel then fallback. Note this will not work if the * CSA specifies a channel that requires a band switch (e.g. * 11a => 11g). This is intentional as 11h is defined only * for 5GHz/11a and because the switch does not involve a * reassociation, protocol state (capabilities, negotated * rates, etc) may/will be wrong. */ struct ieee80211_channel *c = ieee80211_find_channel_byieee(ic, csa->csa_newchan, (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALLTURBO)); if (c == NULL) { c = ieee80211_find_channel_byieee(ic, csa->csa_newchan, (ic->ic_bsschan->ic_flags & IEEE80211_CHAN_ALL)); if (c == NULL) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, wh, "CSA", "invalid channel %u", csa->csa_newchan); goto done; } } #if IEEE80211_CSA_COUNT_MIN > 0 if (csa->csa_count < IEEE80211_CSA_COUNT_MIN) { /* * Require at least IEEE80211_CSA_COUNT_MIN count to * reduce the risk of being redirected by a fabricated * CSA. If a valid CSA is dropped we'll still get a * beacon miss when the AP leaves the channel so we'll * eventually follow to the new channel. * * NOTE: this violates the 11h spec that states that * count may be any value and if 0 then a switch * should happen asap. */ IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_DOTH, wh, "CSA", "count %u too small, must be >= %u", csa->csa_count, IEEE80211_CSA_COUNT_MIN); goto done; } #endif ieee80211_csa_startswitch(ic, c, csa->csa_mode, csa->csa_count); } else { /* * Validate this ie against the initial CSA. We require * mode and channel not change and the count must be * monotonically decreasing. This may be pointless and * canceling the switch as a result may be too paranoid but * in the worst case if we drop out of CSA because of this * and the AP does move then we'll just end up taking a * beacon miss and scan to find the AP. * * XXX may want <= on count as we also process ProbeResp * frames and those may come in w/ the same count as the * previous beacon; but doing so leaves us open to a stuck * count until we add a dead-man timer */ if (!(csa->csa_count < ic->ic_csa_count && csa->csa_mode == ic->ic_csa_mode && csa->csa_newchan == ieee80211_chan2ieee(ic, ic->ic_csa_newchan))) { IEEE80211_NOTE_FRAME(vap, IEEE80211_MSG_DOTH, wh, "CSA ie mismatch, initial ie <%d,%d,%d>, " "this ie <%d,%d,%d>", ic->ic_csa_mode, ic->ic_csa_newchan, ic->ic_csa_count, csa->csa_mode, csa->csa_newchan, csa->csa_count); ieee80211_csa_cancelswitch(ic); } else { if (csa->csa_count <= 1) ieee80211_csa_completeswitch(ic); else ic->ic_csa_count = csa->csa_count; } } done: IEEE80211_UNLOCK(ic); } /* * Return non-zero if a background scan may be continued: * o bg scan is active * o no channel switch is pending * o there has not been any traffic recently * o no full-offload scan support (no need for explicitly continuing scan then) * * Note we do not check if there is an administrative enable; * this is only done to start the scan. We assume that any * change in state will be accompanied by a request to cancel * active scans which will otherwise cause this test to fail. */ static __inline int contbgscan(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; return ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) && (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && !(vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) && vap->iv_state == IEEE80211_S_RUN && /* XXX? */ ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle)); } /* * Return non-zero if a backgrond scan may be started: * o bg scanning is administratively enabled * o no channel switch is pending * o we are not boosted on a dynamic turbo channel * o there has not been a scan recently * o there has not been any traffic recently (don't check if full-offload scan) */ static __inline int startbgscan(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; return ((vap->iv_flags & IEEE80211_F_BGSCAN) && (ic->ic_flags & IEEE80211_F_CSAPENDING) == 0 && #ifdef IEEE80211_SUPPORT_SUPERG !IEEE80211_IS_CHAN_DTURBO(ic->ic_curchan) && #endif ieee80211_time_after(ticks, ic->ic_lastscan + vap->iv_bgscanintvl) && ((vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) || ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle))); } #ifdef notyet /* * Compare two quiet IEs and return if they are equivalent. * * The tbttcount isn't checked - that's not part of the configuration. */ static int compare_quiet_ie(const struct ieee80211_quiet_ie *q1, const struct ieee80211_quiet_ie *q2) { if (q1->period != q2->period) return (0); if (le16dec(&q1->duration) != le16dec(&q2->duration)) return (0); if (le16dec(&q1->offset) != le16dec(&q2->offset)) return (0); return (1); } #endif static void sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { #define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP) struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_channel *rxchan = ic->ic_curchan; struct ieee80211_frame *wh; int ht_state_change = 0, do_ht = 0; uint8_t *frm, *efrm; uint8_t *rates, *xrates, *wme, *htcap, *htinfo; uint8_t *vhtcap, *vhtopmode; uint8_t rate; uint8_t qosinfo; wh = mtod(m0, struct ieee80211_frame *); frm = (uint8_t *)&wh[1]; efrm = mtod(m0, uint8_t *) + m0->m_len; switch (subtype) { case IEEE80211_FC0_SUBTYPE_PROBE_RESP: case IEEE80211_FC0_SUBTYPE_BEACON: { struct ieee80211_scanparams scan; struct ieee80211_channel *c; /* * We process beacon/probe response frames: * o when scanning, or * o station mode when associated (to collect state * updates such as 802.11g slot time) * Frames otherwise received are discarded. */ if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) { vap->iv_stats.is_rx_mgtdiscard++; return; } /* Override RX channel as appropriate */ if (rxs != NULL) { c = ieee80211_lookup_channel_rxstatus(vap, rxs); if (c != NULL) rxchan = c; } /* XXX probe response in sta mode when !scanning? */ if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) { if (! (ic->ic_flags & IEEE80211_F_SCAN)) vap->iv_stats.is_beacon_bad++; return; } /* * Count frame now that we know it's to be processed. */ if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) { vap->iv_stats.is_rx_beacon++; /* XXX remove */ IEEE80211_NODE_STAT(ni, rx_beacons); } else IEEE80211_NODE_STAT(ni, rx_proberesp); /* * When operating in station mode, check for state updates. * Be careful to ignore beacons received while doing a * background scan. We consider only 11g/WMM stuff right now. */ if (ni->ni_associd != 0 && ((ic->ic_flags & IEEE80211_F_SCAN) == 0 || IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))) { /* record tsf of last beacon */ memcpy(ni->ni_tstamp.data, scan.tstamp, sizeof(ni->ni_tstamp)); /* count beacon frame for s/w bmiss handling */ vap->iv_swbmiss_count++; vap->iv_bmiss_count = 0; if (ni->ni_erp != scan.erp) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, wh->i_addr2, "erp change: was 0x%x, now 0x%x", ni->ni_erp, scan.erp); if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) vap->iv_flags |= IEEE80211_F_USEPROT; else vap->iv_flags &= ~IEEE80211_F_USEPROT; ni->ni_erp = scan.erp; /* XXX statistic */ /* driver notification */ ieee80211_vap_update_erp_protmode(vap); } if ((ni->ni_capinfo ^ scan.capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, wh->i_addr2, "capabilities change: was 0x%x, now 0x%x", ni->ni_capinfo, scan.capinfo); /* * NB: we assume short preamble doesn't * change dynamically */ ieee80211_vap_set_shortslottime(vap, IEEE80211_IS_CHAN_A(ic->ic_bsschan) || (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); ni->ni_capinfo = (ni->ni_capinfo &~ IEEE80211_CAPINFO_SHORT_SLOTTIME) | (scan.capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME); /* XXX statistic */ } if (scan.wme != NULL && (ni->ni_flags & IEEE80211_NODE_QOS)) { int _retval; if ((_retval = ieee80211_parse_wmeparams(vap, scan.wme, wh, &qosinfo)) >= 0) { if (qosinfo & WME_CAPINFO_UAPSD_EN) ni->ni_flags |= IEEE80211_NODE_UAPSD; if (_retval > 0) ieee80211_wme_updateparams(vap); } } else ni->ni_flags &= ~IEEE80211_NODE_UAPSD; #ifdef IEEE80211_SUPPORT_SUPERG if (scan.ath != NULL) ieee80211_parse_athparams(ni, scan.ath, wh); #endif if (scan.htcap != NULL && scan.htinfo != NULL && (vap->iv_flags_ht & IEEE80211_FHT_HT)) { /* XXX state changes? */ ieee80211_ht_updateparams(ni, scan.htcap, scan.htinfo); do_ht = 1; } if (scan.vhtcap != NULL && scan.vhtopmode != NULL && (vap->iv_vht_flags & IEEE80211_FVHT_VHT)) { /* XXX state changes? */ ieee80211_vht_updateparams(ni, scan.vhtcap, scan.vhtopmode); do_ht = 1; } if (do_ht) { if (ieee80211_ht_updateparams_final(ni, scan.htcap, scan.htinfo)) ht_state_change = 1; } /* * If we have a quiet time IE then report it up to * the driver. * * Otherwise, inform the driver that the quiet time * IE has disappeared - only do that once rather than * spamming it each time. */ if (scan.quiet) { ic->ic_set_quiet(ni, scan.quiet); ni->ni_quiet_ie_set = 1; memcpy(&ni->ni_quiet_ie, scan.quiet, sizeof(struct ieee80211_quiet_ie)); } else { if (ni->ni_quiet_ie_set == 1) ic->ic_set_quiet(ni, NULL); ni->ni_quiet_ie_set = 0; bzero(&ni->ni_quiet_ie, sizeof(struct ieee80211_quiet_ie)); } if (scan.tim != NULL) { struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) scan.tim; /* * XXX Check/debug this code; see if it's about * the right time to force the VAP awake if we * receive a frame destined for us? */ int aid = IEEE80211_AID(ni->ni_associd); int ix = aid / NBBY; int min = tim->tim_bitctl &~ 1; int max = tim->tim_len + min - 4; int tim_ucast = 0; #ifdef __notyet__ int tim_mcast = 0; #endif /* * Only do this for unicast traffic in the TIM * The multicast traffic notification for * the scan notification stuff should occur * differently. */ if (min <= ix && ix <= max && isset(tim->tim_bitmap - min, aid)) { tim_ucast = 1; } #ifdef __notyet__ /* * Do a separate notification * for the multicast bit being set. */ if (tim->tim_bitctl & 1) { tim_mcast = 1; } #endif /* * If the TIM indicates there's traffic for * us then get us out of STA mode powersave. */ if (tim_ucast == 1) { /* * Wake us out of SLEEP state if we're * in it; and if we're doing bgscan * then wake us out of STA powersave. */ ieee80211_sta_tim_notify(vap, 1); /* * This is preventing us from * continuing a bgscan; because it * tricks the contbgscan() * routine to think there's always * traffic for us. * * I think we need both an RX and * TX ic_lastdata field. */ ic->ic_lastdata = ticks; } ni->ni_dtim_count = tim->tim_count; ni->ni_dtim_period = tim->tim_period; } if (scan.csa != NULL && (vap->iv_flags & IEEE80211_F_DOTH)) ieee80211_parse_csaparams(vap, scan.csa, wh); else if (ic->ic_flags & IEEE80211_F_CSAPENDING) { /* * No CSA ie or 11h disabled, but a channel * switch is pending; drop out so we aren't * stuck in CSA state. If the AP really is * moving we'll get a beacon miss and scan. */ IEEE80211_LOCK(ic); ieee80211_csa_cancelswitch(ic); IEEE80211_UNLOCK(ic); } /* * If scanning, pass the info to the scan module. * Otherwise, check if it's the right time to do * a background scan. Background scanning must * be enabled and we must not be operating in the * turbo phase of dynamic turbo mode. Then, * it's been a while since the last background * scan and if no data frames have come through * recently, kick off a scan. Note that this * is the mechanism by which a background scan * is started _and_ continued each time we * return on-channel to receive a beacon from * our ap. */ if (ic->ic_flags & IEEE80211_F_SCAN) { ieee80211_add_scan(vap, rxchan, &scan, wh, subtype, rssi, nf); } else if (contbgscan(vap)) { ieee80211_bg_scan(vap, 0); } else if (startbgscan(vap)) { vap->iv_stats.is_scan_bg++; #if 0 /* wakeup if we are sleeing */ ieee80211_set_pwrsave(vap, 0); #endif ieee80211_bg_scan(vap, 0); } /* * Put the station to sleep if we haven't seen * traffic in a while. */ IEEE80211_LOCK(ic); ieee80211_sta_ps_timer_check(vap); IEEE80211_UNLOCK(ic); /* * If we've had a channel width change (eg HT20<->HT40) * then schedule a delayed driver notification. */ if (ht_state_change) ieee80211_update_chw(ic); return; } /* * If scanning, just pass information to the scan module. */ if (ic->ic_flags & IEEE80211_F_SCAN) { if (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN) { /* * Actively scanning a channel marked passive; * send a probe request now that we know there * is 802.11 traffic present. * * XXX check if the beacon we recv'd gives * us what we need and suppress the probe req */ ieee80211_probe_curchan(vap, true); ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN; } ieee80211_add_scan(vap, rxchan, &scan, wh, subtype, rssi, nf); return; } break; } case IEEE80211_FC0_SUBTYPE_AUTH: { uint16_t algo, seq, status; /* * auth frame format * [2] algorithm * [2] sequence * [2] status * [tlv*] challenge */ IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); algo = le16toh(*(uint16_t *)frm); seq = le16toh(*(uint16_t *)(frm + 2)); status = le16toh(*(uint16_t *)(frm + 4)); IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2, "recv auth frame with algorithm %d seq %d", algo, seq); if (vap->iv_flags & IEEE80211_F_COUNTERM) { IEEE80211_DISCARD(vap, IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO, wh, "auth", "%s", "TKIP countermeasures enabled"); vap->iv_stats.is_rx_auth_countermeasures++; if (vap->iv_opmode == IEEE80211_M_HOSTAP) { ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH, IEEE80211_REASON_MIC_FAILURE); } return; } if (algo == IEEE80211_AUTH_ALG_SHARED) sta_auth_shared(ni, wh, frm + 6, efrm, rssi, nf, seq, status); else if (algo == IEEE80211_AUTH_ALG_OPEN) sta_auth_open(ni, wh, rssi, nf, seq, status); else { IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "auth", "unsupported alg %d", algo); vap->iv_stats.is_rx_auth_unsupported++; return; } break; } case IEEE80211_FC0_SUBTYPE_ASSOC_RESP: case IEEE80211_FC0_SUBTYPE_REASSOC_RESP: { uint16_t capinfo, associd; uint16_t status; if (vap->iv_state != IEEE80211_S_ASSOC) { vap->iv_stats.is_rx_mgtdiscard++; return; } /* * asresp frame format * [2] capability information * [2] status * [2] association ID * [tlv] supported rates * [tlv] extended supported rates * [tlv] WME * [tlv] HT capabilities * [tlv] HT info */ IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return); ni = vap->iv_bss; capinfo = le16toh(*(uint16_t *)frm); frm += 2; status = le16toh(*(uint16_t *)frm); frm += 2; if (status != 0) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, wh->i_addr2, "%sassoc failed (reason %d)", ISREASSOC(subtype) ? "re" : "", status); vap->iv_stats.is_rx_auth_fail++; /* XXX */ return; } associd = le16toh(*(uint16_t *)frm); frm += 2; rates = xrates = wme = htcap = htinfo = NULL; vhtcap = vhtopmode = NULL; while (efrm - frm > 1) { IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); switch (*frm) { case IEEE80211_ELEMID_RATES: rates = frm; break; case IEEE80211_ELEMID_XRATES: xrates = frm; break; case IEEE80211_ELEMID_HTCAP: htcap = frm; break; case IEEE80211_ELEMID_HTINFO: htinfo = frm; break; case IEEE80211_ELEMID_VENDOR: if (iswmeoui(frm)) wme = frm; else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) { /* * Accept pre-draft HT ie's if the * standard ones have not been seen. */ if (ishtcapoui(frm)) { if (htcap == NULL) htcap = frm; } else if (ishtinfooui(frm)) { if (htinfo == NULL) htinfo = frm; } } /* XXX Atheros OUI support */ break; case IEEE80211_ELEMID_VHT_CAP: vhtcap = frm; break; case IEEE80211_ELEMID_VHT_OPMODE: vhtopmode = frm; break; } frm += frm[1] + 2; } IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return); if (xrates != NULL) IEEE80211_VERIFY_ELEMENT(xrates, IEEE80211_RATE_MAXSIZE - rates[1], return); rate = ieee80211_setup_rates(ni, rates, xrates, IEEE80211_F_JOIN | IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE | IEEE80211_F_DONEGO | IEEE80211_F_DODEL); if (rate & IEEE80211_RATE_BASIC) { IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC, wh->i_addr2, "%sassoc failed (rate set mismatch)", ISREASSOC(subtype) ? "re" : ""); vap->iv_stats.is_rx_assoc_norate++; ieee80211_new_state(vap, IEEE80211_S_SCAN, IEEE80211_SCAN_FAIL_STATUS); return; } ni->ni_capinfo = capinfo; ni->ni_associd = associd; if (ni->ni_jointime == 0) ni->ni_jointime = time_uptime; if (wme != NULL && ieee80211_parse_wmeparams(vap, wme, wh, &qosinfo) >= 0) { ni->ni_flags |= IEEE80211_NODE_QOS; ieee80211_wme_updateparams(vap); } else ni->ni_flags &= ~IEEE80211_NODE_QOS; /* * Setup HT state according to the negotiation. * * NB: shouldn't need to check if HT use is enabled but some * ap's send back HT ie's even when we don't indicate we * are HT capable in our AssocReq. */ if (htcap != NULL && htinfo != NULL && (vap->iv_flags_ht & IEEE80211_FHT_HT)) { ieee80211_ht_node_init(ni); ieee80211_ht_updateparams(ni, htcap, htinfo); if ((vhtcap != NULL) && (vhtopmode != NULL) & (vap->iv_vht_flags & IEEE80211_FVHT_VHT)) { /* * Log if we get a VHT assoc/reassoc response. * We aren't ready for 2GHz VHT support. */ if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { printf("%s: peer %6D: VHT on 2GHz, ignoring\n", __func__, ni->ni_macaddr, ":"); } else { ieee80211_vht_node_init(ni); ieee80211_vht_updateparams(ni, vhtcap, vhtopmode); ieee80211_setup_vht_rates(ni, vhtcap, vhtopmode); } } ieee80211_ht_updateparams_final(ni, htcap, htinfo); ieee80211_setup_htrates(ni, htcap, IEEE80211_F_JOIN | IEEE80211_F_DOBRS); ieee80211_setup_basic_htrates(ni, htinfo); ieee80211_node_setuptxparms(ni); ieee80211_ratectl_node_init(ni); } /* * Always initialise FF/superg state; we can use this * for doing A-MSDU encapsulation as well. */ #ifdef IEEE80211_SUPPORT_SUPERG ieee80211_ff_node_init(ni); #endif /* * Configure state now that we are associated. * * XXX may need different/additional driver callbacks? */ if (IEEE80211_IS_CHAN_A(ic->ic_curchan) || (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)) { vap->iv_flags |= IEEE80211_F_SHPREAMBLE; vap->iv_flags &= ~IEEE80211_F_USEBARKER; } else { vap->iv_flags &= ~IEEE80211_F_SHPREAMBLE; vap->iv_flags |= IEEE80211_F_USEBARKER; } ieee80211_vap_set_shortslottime(vap, IEEE80211_IS_CHAN_A(ic->ic_curchan) || (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)); ieee80211_vap_update_preamble(vap); /* * Honor ERP protection. * * NB: ni_erp should zero for non-11g operation. */ if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) && (ni->ni_erp & IEEE80211_ERP_USE_PROTECTION)) vap->iv_flags |= IEEE80211_F_USEPROT; else vap->iv_flags &= ~IEEE80211_F_USEPROT; ieee80211_vap_update_erp_protmode(vap); IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, wh->i_addr2, "%sassoc success at aid %d: %s preamble, %s slot time%s%s%s%s%s%s%s%s%s", ISREASSOC(subtype) ? "re" : "", IEEE80211_NODE_AID(ni), vap->iv_flags&IEEE80211_F_SHPREAMBLE ? "short" : "long", vap->iv_flags&IEEE80211_F_SHSLOT ? "short" : "long", vap->iv_flags&IEEE80211_F_USEPROT ? ", protection" : "", ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "", ni->ni_flags & IEEE80211_NODE_HT ? (ni->ni_chw == IEEE80211_STA_RX_BW_40 ? ", HT40" : ", HT20") : "", ni->ni_flags & IEEE80211_NODE_AMPDU ? " (+AMPDU)" : "", ni->ni_flags & IEEE80211_NODE_AMSDU ? " (+AMSDU)" : "", ni->ni_flags & IEEE80211_NODE_MIMO_RTS ? " (+SMPS-DYN)" : ni->ni_flags & IEEE80211_NODE_MIMO_PS ? " (+SMPS)" : "", ni->ni_flags & IEEE80211_NODE_RIFS ? " (+RIFS)" : "", IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ? ", fast-frames" : "", IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ? ", turbo" : "" ); ieee80211_new_state(vap, IEEE80211_S_RUN, subtype); break; } case IEEE80211_FC0_SUBTYPE_DEAUTH: { uint16_t reason; if (vap->iv_state == IEEE80211_S_SCAN) { vap->iv_stats.is_rx_mgtdiscard++; return; } if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { /* NB: can happen when in promiscuous mode */ vap->iv_stats.is_rx_mgtdiscard++; break; } /* * deauth frame format * [2] reason */ IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); reason = le16toh(*(uint16_t *)frm); vap->iv_stats.is_rx_deauth++; vap->iv_stats.is_rx_deauth_code = reason; IEEE80211_NODE_STAT(ni, rx_deauth); IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni, "recv deauthenticate (reason: %d (%s))", reason, ieee80211_reason_to_string(reason)); ieee80211_new_state(vap, IEEE80211_S_AUTH, (reason << 8) | IEEE80211_FC0_SUBTYPE_DEAUTH); break; } case IEEE80211_FC0_SUBTYPE_DISASSOC: { uint16_t reason; if (vap->iv_state != IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_ASSOC && vap->iv_state != IEEE80211_S_AUTH) { vap->iv_stats.is_rx_mgtdiscard++; return; } if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) { /* NB: can happen when in promiscuous mode */ vap->iv_stats.is_rx_mgtdiscard++; break; } /* * disassoc frame format * [2] reason */ IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return); reason = le16toh(*(uint16_t *)frm); vap->iv_stats.is_rx_disassoc++; vap->iv_stats.is_rx_disassoc_code = reason; IEEE80211_NODE_STAT(ni, rx_disassoc); IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni, "recv disassociate (reason: %d (%s))", reason, ieee80211_reason_to_string(reason)); ieee80211_new_state(vap, IEEE80211_S_ASSOC, 0); break; } case IEEE80211_FC0_SUBTYPE_ACTION: case IEEE80211_FC0_SUBTYPE_ACTION_NOACK: if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not for us"); vap->iv_stats.is_rx_mgtdiscard++; } else if (vap->iv_state != IEEE80211_S_RUN) { IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "wrong state %s", ieee80211_state_name[vap->iv_state]); vap->iv_stats.is_rx_mgtdiscard++; } else { if (ieee80211_parse_action(ni, m0) == 0) (void)ic->ic_recv_action(ni, wh, frm, efrm); } break; case IEEE80211_FC0_SUBTYPE_ASSOC_REQ: case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: case IEEE80211_FC0_SUBTYPE_PROBE_REQ: case IEEE80211_FC0_SUBTYPE_TIMING_ADV: case IEEE80211_FC0_SUBTYPE_ATIM: IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT, wh, NULL, "%s", "not handled"); vap->iv_stats.is_rx_mgtdiscard++; break; default: IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, wh, "mgt", "subtype 0x%x not handled", subtype); vap->iv_stats.is_rx_badsubtype++; break; } #undef ISREASSOC } static void sta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype) { switch (subtype) { case IEEE80211_FC0_SUBTYPE_BAR: ieee80211_recv_bar(ni, m); break; } } diff --git a/sys/net80211/ieee80211_superg.c b/sys/net80211/ieee80211_superg.c index 815fb356891c..ee3b70d5ed9f 100644 --- a/sys/net80211/ieee80211_superg.c +++ b/sys/net80211/ieee80211_superg.c @@ -1,1063 +1,1065 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include "opt_wlan.h" #ifdef IEEE80211_SUPPORT_SUPERG #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Atheros fast-frame encapsulation format. * FF max payload: * 802.2 + FFHDR + HPAD + 802.3 + 802.2 + 1500 + SPAD + 802.3 + 802.2 + 1500: * 8 + 4 + 4 + 14 + 8 + 1500 + 6 + 14 + 8 + 1500 * = 3066 */ /* fast frame header is 32-bits */ #define ATH_FF_PROTO 0x0000003f /* protocol */ #define ATH_FF_PROTO_S 0 #define ATH_FF_FTYPE 0x000000c0 /* frame type */ #define ATH_FF_FTYPE_S 6 #define ATH_FF_HLEN32 0x00000300 /* optional hdr length */ #define ATH_FF_HLEN32_S 8 #define ATH_FF_SEQNUM 0x001ffc00 /* sequence number */ #define ATH_FF_SEQNUM_S 10 #define ATH_FF_OFFSET 0xffe00000 /* offset to 2nd payload */ #define ATH_FF_OFFSET_S 21 #define ATH_FF_MAX_HDR_PAD 4 #define ATH_FF_MAX_SEP_PAD 6 #define ATH_FF_MAX_HDR 30 #define ATH_FF_PROTO_L2TUNNEL 0 /* L2 tunnel protocol */ #define ATH_FF_ETH_TYPE 0x88bd /* Ether type for encapsulated frames */ #define ATH_FF_SNAP_ORGCODE_0 0x00 #define ATH_FF_SNAP_ORGCODE_1 0x03 #define ATH_FF_SNAP_ORGCODE_2 0x7f #define ATH_FF_TXQMIN 2 /* min txq depth for staging */ #define ATH_FF_TXQMAX 50 /* maximum # of queued frames allowed */ #define ATH_FF_STAGEMAX 5 /* max waiting period for staged frame*/ #define ETHER_HEADER_COPY(dst, src) \ memcpy(dst, src, sizeof(struct ether_header)) static int ieee80211_ffppsmin = 2; /* pps threshold for ff aggregation */ SYSCTL_INT(_net_wlan, OID_AUTO, ffppsmin, CTLFLAG_RW, &ieee80211_ffppsmin, 0, "min packet rate before fast-frame staging"); static int ieee80211_ffagemax = -1; /* max time frames held on stage q */ SYSCTL_PROC(_net_wlan, OID_AUTO, ffagemax, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, &ieee80211_ffagemax, 0, ieee80211_sysctl_msecs_ticks, "I", "max hold time for fast-frame staging (ms)"); static void ff_age_all(void *arg, int npending) { struct ieee80211com *ic = arg; /* XXX cache timer value somewhere (racy) */ ieee80211_ff_age_all(ic, ieee80211_ffagemax + 1); } void ieee80211_superg_attach(struct ieee80211com *ic) { struct ieee80211_superg *sg; IEEE80211_FF_LOCK_INIT(ic, ic->ic_name); sg = (struct ieee80211_superg *) IEEE80211_MALLOC( sizeof(struct ieee80211_superg), M_80211_VAP, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); if (sg == NULL) { printf("%s: cannot allocate SuperG state block\n", __func__); return; } TIMEOUT_TASK_INIT(ic->ic_tq, &sg->ff_qtimer, 0, ff_age_all, ic); ic->ic_superg = sg; /* * Default to not being so aggressive for FF/AMSDU * aging, otherwise we may hold a frame around * for way too long before we expire it out. */ ieee80211_ffagemax = msecs_to_ticks(2); } void ieee80211_superg_detach(struct ieee80211com *ic) { if (ic->ic_superg != NULL) { struct timeout_task *qtask = &ic->ic_superg->ff_qtimer; while (taskqueue_cancel_timeout(ic->ic_tq, qtask, NULL) != 0) taskqueue_drain_timeout(ic->ic_tq, qtask); IEEE80211_FREE(ic->ic_superg, M_80211_VAP); ic->ic_superg = NULL; } IEEE80211_FF_LOCK_DESTROY(ic); } void ieee80211_superg_vattach(struct ieee80211vap *vap) { struct ieee80211com *ic = vap->iv_ic; if (ic->ic_superg == NULL) /* NB: can't do fast-frames w/o state */ vap->iv_caps &= ~IEEE80211_C_FF; if (vap->iv_caps & IEEE80211_C_FF) vap->iv_flags |= IEEE80211_F_FF; /* NB: we only implement sta mode */ if (vap->iv_opmode == IEEE80211_M_STA && (vap->iv_caps & IEEE80211_C_TURBOP)) vap->iv_flags |= IEEE80211_F_TURBOP; } void ieee80211_superg_vdetach(struct ieee80211vap *vap) { } #define ATH_OUI_BYTES 0x00, 0x03, 0x7f /* * Add a WME information element to a frame. */ uint8_t * ieee80211_add_ath(uint8_t *frm, uint8_t caps, ieee80211_keyix defkeyix) { static const struct ieee80211_ath_ie info = { .ath_id = IEEE80211_ELEMID_VENDOR, .ath_len = sizeof(struct ieee80211_ath_ie) - 2, .ath_oui = { ATH_OUI_BYTES }, .ath_oui_type = ATH_OUI_TYPE, .ath_oui_subtype= ATH_OUI_SUBTYPE, .ath_version = ATH_OUI_VERSION, }; struct ieee80211_ath_ie *ath = (struct ieee80211_ath_ie *) frm; memcpy(frm, &info, sizeof(info)); ath->ath_capability = caps; if (defkeyix != IEEE80211_KEYIX_NONE) { ath->ath_defkeyix[0] = (defkeyix & 0xff); ath->ath_defkeyix[1] = ((defkeyix >> 8) & 0xff); } else { ath->ath_defkeyix[0] = 0xff; ath->ath_defkeyix[1] = 0x7f; } return frm + sizeof(info); } #undef ATH_OUI_BYTES uint8_t * ieee80211_add_athcaps(uint8_t *frm, const struct ieee80211_node *bss) { const struct ieee80211vap *vap = bss->ni_vap; return ieee80211_add_ath(frm, vap->iv_flags & IEEE80211_F_ATHEROS, ((vap->iv_flags & IEEE80211_F_WPA) == 0 && bss->ni_authmode != IEEE80211_AUTH_8021X) ? vap->iv_def_txkey : IEEE80211_KEYIX_NONE); } void ieee80211_parse_ath(struct ieee80211_node *ni, uint8_t *ie) { const struct ieee80211_ath_ie *ath = (const struct ieee80211_ath_ie *) ie; ni->ni_ath_flags = ath->ath_capability; ni->ni_ath_defkeyix = le16dec(&ath->ath_defkeyix); } int ieee80211_parse_athparams(struct ieee80211_node *ni, uint8_t *frm, const struct ieee80211_frame *wh) { struct ieee80211vap *vap = ni->ni_vap; const struct ieee80211_ath_ie *ath; u_int len = frm[1]; int capschanged; uint16_t defkeyix; if (len < sizeof(struct ieee80211_ath_ie)-2) { IEEE80211_DISCARD_IE(vap, IEEE80211_MSG_ELEMID | IEEE80211_MSG_SUPERG, wh, "Atheros", "too short, len %u", len); return -1; } ath = (const struct ieee80211_ath_ie *)frm; capschanged = (ni->ni_ath_flags != ath->ath_capability); defkeyix = le16dec(ath->ath_defkeyix); if (capschanged || defkeyix != ni->ni_ath_defkeyix) { ni->ni_ath_flags = ath->ath_capability; ni->ni_ath_defkeyix = defkeyix; IEEE80211_NOTE(vap, IEEE80211_MSG_SUPERG, ni, "ath ie change: new caps 0x%x defkeyix 0x%x", ni->ni_ath_flags, ni->ni_ath_defkeyix); } if (IEEE80211_ATH_CAP(vap, ni, ATHEROS_CAP_TURBO_PRIME)) { uint16_t curflags, newflags; /* * Check for turbo mode switch. Calculate flags * for the new mode and effect the switch. */ newflags = curflags = vap->iv_ic->ic_bsschan->ic_flags; /* NB: BOOST is not in ic_flags, so get it from the ie */ if (ath->ath_capability & ATHEROS_CAP_BOOST) newflags |= IEEE80211_CHAN_TURBO; else newflags &= ~IEEE80211_CHAN_TURBO; if (newflags != curflags) ieee80211_dturbo_switch(vap, newflags); } return capschanged; } /* * Decap the encapsulated frame pair and dispatch the first * for delivery. The second frame is returned for delivery * via the normal path. */ struct mbuf * ieee80211_ff_decap(struct ieee80211_node *ni, struct mbuf *m) { #define FF_LLC_SIZE (sizeof(struct ether_header) + sizeof(struct llc)) struct ieee80211vap *vap = ni->ni_vap; struct llc *llc; uint32_t ath; struct mbuf *n; int framelen; /* NB: we assume caller does this check for us */ KASSERT(IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF), ("ff not negotiated")); /* * Check for fast-frame tunnel encapsulation. */ if (m->m_pkthdr.len < 3*FF_LLC_SIZE) return m; if (m->m_len < FF_LLC_SIZE && (m = m_pullup(m, FF_LLC_SIZE)) == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "fast-frame", "%s", "m_pullup(llc) failed"); vap->iv_stats.is_rx_tooshort++; return NULL; } llc = (struct llc *)(mtod(m, uint8_t *) + sizeof(struct ether_header)); if (llc->llc_snap.ether_type != htons(ATH_FF_ETH_TYPE)) return m; m_adj(m, FF_LLC_SIZE); m_copydata(m, 0, sizeof(uint32_t), (caddr_t) &ath); if (_IEEE80211_MASKSHIFT(ath, ATH_FF_PROTO) != ATH_FF_PROTO_L2TUNNEL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "fast-frame", "unsupport tunnel protocol, header 0x%x", ath); vap->iv_stats.is_ff_badhdr++; m_freem(m); return NULL; } /* NB: skip header and alignment padding */ m_adj(m, roundup(sizeof(uint32_t) - 2, 4) + 2); vap->iv_stats.is_ff_decap++; /* * Decap the first frame, bust it apart from the * second and deliver; then decap the second frame * and return it to the caller for normal delivery. */ m = ieee80211_decap1(m, &framelen); if (m == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "fast-frame", "%s", "first decap failed"); vap->iv_stats.is_ff_tooshort++; return NULL; } n = m_split(m, framelen, IEEE80211_M_NOWAIT); if (n == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "fast-frame", "%s", "unable to split encapsulated frames"); vap->iv_stats.is_ff_split++; m_freem(m); /* NB: must reclaim */ return NULL; } /* XXX not right for WDS */ vap->iv_deliver_data(vap, ni, m); /* 1st of pair */ /* * Decap second frame. */ m_adj(n, roundup2(framelen, 4) - framelen); /* padding */ n = ieee80211_decap1(n, &framelen); if (n == NULL) { IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ni->ni_macaddr, "fast-frame", "%s", "second decap failed"); vap->iv_stats.is_ff_tooshort++; } /* XXX verify framelen against mbuf contents */ return n; /* 2nd delivered by caller */ #undef FF_LLC_SIZE } /* * Fast frame encapsulation. There must be two packets * chained with m_nextpkt. We do header adjustment for * each, add the tunnel encapsulation, and then concatenate * the mbuf chains to form a single frame for transmission. */ struct mbuf * ieee80211_ff_encap(struct ieee80211vap *vap, struct mbuf *m1, int hdrspace, struct ieee80211_key *key) { struct mbuf *m2; struct ether_header eh1, eh2; struct llc *llc; struct mbuf *m; int pad; m2 = m1->m_nextpkt; if (m2 == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: only one frame\n", __func__); goto bad; } m1->m_nextpkt = NULL; /* * Adjust to include 802.11 header requirement. */ KASSERT(m1->m_len >= sizeof(eh1), ("no ethernet header!")); ETHER_HEADER_COPY(&eh1, mtod(m1, caddr_t)); m1 = ieee80211_mbuf_adjust(vap, hdrspace, key, m1); if (m1 == NULL) { printf("%s: failed initial mbuf_adjust\n", __func__); /* NB: ieee80211_mbuf_adjust handles msgs+statistics */ m_freem(m2); goto bad; } /* * Copy second frame's Ethernet header out of line * and adjust for possible padding in case there isn't room * at the end of first frame. */ KASSERT(m2->m_len >= sizeof(eh2), ("no ethernet header!")); ETHER_HEADER_COPY(&eh2, mtod(m2, caddr_t)); m2 = ieee80211_mbuf_adjust(vap, 4, NULL, m2); if (m2 == NULL) { /* NB: ieee80211_mbuf_adjust handles msgs+statistics */ printf("%s: failed second \n", __func__); goto bad; } /* * Now do tunnel encapsulation. First, each * frame gets a standard encapsulation. */ m1 = ieee80211_ff_encap1(vap, m1, &eh1); if (m1 == NULL) goto bad; m2 = ieee80211_ff_encap1(vap, m2, &eh2); if (m2 == NULL) goto bad; /* * Pad leading frame to a 4-byte boundary. If there * is space at the end of the first frame, put it * there; otherwise prepend to the front of the second * frame. We know doing the second will always work * because we reserve space above. We prefer appending * as this typically has better DMA alignment properties. */ for (m = m1; m->m_next != NULL; m = m->m_next) ; pad = roundup2(m1->m_pkthdr.len, 4) - m1->m_pkthdr.len; if (pad) { if (M_TRAILINGSPACE(m) < pad) { /* prepend to second */ m2->m_data -= pad; m2->m_len += pad; m2->m_pkthdr.len += pad; } else { /* append to first */ m->m_len += pad; m1->m_pkthdr.len += pad; } } /* * A-MSDU's are just appended; the "I'm A-MSDU!" bit is in the * QoS header. * * XXX optimize by prepending together */ m->m_next = m2; /* NB: last mbuf from above */ m1->m_pkthdr.len += m2->m_pkthdr.len; M_PREPEND(m1, sizeof(uint32_t)+2, IEEE80211_M_NOWAIT); if (m1 == NULL) { /* XXX cannot happen */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: no space for tunnel header\n", __func__); vap->iv_stats.is_tx_nobuf++; return NULL; } memset(mtod(m1, void *), 0, sizeof(uint32_t)+2); M_PREPEND(m1, sizeof(struct llc), IEEE80211_M_NOWAIT); if (m1 == NULL) { /* XXX cannot happen */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: no space for llc header\n", __func__); vap->iv_stats.is_tx_nobuf++; return NULL; } llc = mtod(m1, struct llc *); llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; llc->llc_control = LLC_UI; llc->llc_snap.org_code[0] = ATH_FF_SNAP_ORGCODE_0; llc->llc_snap.org_code[1] = ATH_FF_SNAP_ORGCODE_1; llc->llc_snap.org_code[2] = ATH_FF_SNAP_ORGCODE_2; llc->llc_snap.ether_type = htons(ATH_FF_ETH_TYPE); vap->iv_stats.is_ff_encap++; return m1; bad: vap->iv_stats.is_ff_encapfail++; if (m1 != NULL) m_freem(m1); if (m2 != NULL) m_freem(m2); return NULL; } /* * A-MSDU encapsulation. * * This assumes just two frames for now, since we're borrowing the * same queuing code and infrastructure as fast-frames. * * There must be two packets chained with m_nextpkt. * We do header adjustment for each, and then concatenate the mbuf chains * to form a single frame for transmission. */ struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1, int hdrspace, struct ieee80211_key *key) { struct mbuf *m2; struct ether_header eh1, eh2; struct mbuf *m; int pad; m2 = m1->m_nextpkt; if (m2 == NULL) { IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: only one frame\n", __func__); goto bad; } m1->m_nextpkt = NULL; /* * Include A-MSDU header in adjusting header layout. */ KASSERT(m1->m_len >= sizeof(eh1), ("no ethernet header!")); ETHER_HEADER_COPY(&eh1, mtod(m1, caddr_t)); m1 = ieee80211_mbuf_adjust(vap, hdrspace + sizeof(struct llc) + sizeof(uint32_t) + sizeof(struct ether_header), key, m1); if (m1 == NULL) { /* NB: ieee80211_mbuf_adjust handles msgs+statistics */ m_freem(m2); goto bad; } /* * Copy second frame's Ethernet header out of line * and adjust for encapsulation headers. Note that * we make room for padding in case there isn't room * at the end of first frame. */ KASSERT(m2->m_len >= sizeof(eh2), ("no ethernet header!")); ETHER_HEADER_COPY(&eh2, mtod(m2, caddr_t)); m2 = ieee80211_mbuf_adjust(vap, 4, NULL, m2); if (m2 == NULL) { /* NB: ieee80211_mbuf_adjust handles msgs+statistics */ goto bad; } /* * Now do tunnel encapsulation. First, each * frame gets a standard encapsulation. */ m1 = ieee80211_ff_encap1(vap, m1, &eh1); if (m1 == NULL) goto bad; m2 = ieee80211_ff_encap1(vap, m2, &eh2); if (m2 == NULL) goto bad; /* * Pad leading frame to a 4-byte boundary. If there * is space at the end of the first frame, put it * there; otherwise prepend to the front of the second * frame. We know doing the second will always work * because we reserve space above. We prefer appending * as this typically has better DMA alignment properties. */ for (m = m1; m->m_next != NULL; m = m->m_next) ; pad = roundup2(m1->m_pkthdr.len, 4) - m1->m_pkthdr.len; if (pad) { if (M_TRAILINGSPACE(m) < pad) { /* prepend to second */ m2->m_data -= pad; m2->m_len += pad; m2->m_pkthdr.len += pad; } else { /* append to first */ m->m_len += pad; m1->m_pkthdr.len += pad; } } /* * Now, stick 'em together. */ m->m_next = m2; /* NB: last mbuf from above */ m1->m_pkthdr.len += m2->m_pkthdr.len; vap->iv_stats.is_amsdu_encap++; return m1; bad: vap->iv_stats.is_amsdu_encapfail++; if (m1 != NULL) m_freem(m1); if (m2 != NULL) m_freem(m2); return NULL; } static void ff_transmit(struct ieee80211_node *ni, struct mbuf *m) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; IEEE80211_TX_LOCK_ASSERT(ic); /* encap and xmit */ m = ieee80211_encap(vap, ni, m); if (m != NULL) (void) ieee80211_parent_xmitpkt(ic, m); else ieee80211_free_node(ni); } /* * Flush frames to device; note we re-use the linked list * the frames were stored on and use the sentinel (unchanged) * which may be non-NULL. */ static void ff_flush(struct mbuf *head, struct mbuf *last) { struct mbuf *m, *next; struct ieee80211_node *ni; struct ieee80211vap *vap; for (m = head; m != last; m = next) { next = m->m_nextpkt; m->m_nextpkt = NULL; ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; vap = ni->ni_vap; IEEE80211_NOTE(vap, IEEE80211_MSG_SUPERG, ni, "%s: flush frame, age %u", __func__, M_AGE_GET(m)); vap->iv_stats.is_ff_flush++; ff_transmit(ni, m); } } /* * Age frames on the staging queue. */ void ieee80211_ff_age(struct ieee80211com *ic, struct ieee80211_stageq *sq, int quanta) { struct mbuf *m, *head; struct ieee80211_node *ni; IEEE80211_FF_LOCK(ic); if (sq->depth == 0) { IEEE80211_FF_UNLOCK(ic); return; /* nothing to do */ } KASSERT(sq->head != NULL, ("stageq empty")); head = sq->head; while ((m = sq->head) != NULL && M_AGE_GET(m) < quanta) { int tid = WME_AC_TO_TID(M_WME_GETAC(m)); /* clear staging ref to frame */ ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; KASSERT(ni->ni_tx_superg[tid] == m, ("staging queue empty")); ni->ni_tx_superg[tid] = NULL; sq->head = m->m_nextpkt; sq->depth--; } if (m == NULL) sq->tail = NULL; else M_AGE_SUB(m, quanta); IEEE80211_FF_UNLOCK(ic); IEEE80211_TX_LOCK(ic); ff_flush(head, m); IEEE80211_TX_UNLOCK(ic); } static void stageq_add(struct ieee80211com *ic, struct ieee80211_stageq *sq, struct mbuf *m) { int age = ieee80211_ffagemax; IEEE80211_FF_LOCK_ASSERT(ic); if (sq->tail != NULL) { sq->tail->m_nextpkt = m; age -= M_AGE_GET(sq->head); } else { sq->head = m; struct timeout_task *qtask = &ic->ic_superg->ff_qtimer; taskqueue_enqueue_timeout(ic->ic_tq, qtask, age); } KASSERT(age >= 0, ("age %d", age)); M_AGE_SET(m, age); m->m_nextpkt = NULL; sq->tail = m; sq->depth++; } static void stageq_remove(struct ieee80211com *ic, struct ieee80211_stageq *sq, struct mbuf *mstaged) { struct mbuf *m, *mprev; IEEE80211_FF_LOCK_ASSERT(ic); mprev = NULL; for (m = sq->head; m != NULL; m = m->m_nextpkt) { if (m == mstaged) { if (mprev == NULL) sq->head = m->m_nextpkt; else mprev->m_nextpkt = m->m_nextpkt; if (sq->tail == m) sq->tail = mprev; sq->depth--; return; } mprev = m; } printf("%s: packet not found\n", __func__); } static uint32_t ff_approx_txtime(struct ieee80211_node *ni, const struct mbuf *m1, const struct mbuf *m2) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211vap *vap = ni->ni_vap; uint32_t framelen; uint32_t frame_time; + uint8_t dot11rate; /* * Approximate the frame length to be transmitted. A swag to add * the following maximal values to the skb payload: * - 32: 802.11 encap + CRC * - 24: encryption overhead (if wep bit) * - 4 + 6: fast-frame header and padding * - 16: 2 LLC FF tunnel headers * - 14: 1 802.3 FF tunnel header (mbuf already accounts for 2nd) */ framelen = m1->m_pkthdr.len + 32 + ATH_FF_MAX_HDR_PAD + ATH_FF_MAX_SEP_PAD + ATH_FF_MAX_HDR; if (vap->iv_flags & IEEE80211_F_PRIVACY) framelen += 24; if (m2 != NULL) framelen += m2->m_pkthdr.len; /* * For now, we assume non-shortgi, 20MHz, just because I want to * at least test 802.11n. */ - if (ni->ni_txrate & IEEE80211_RATE_MCS) + dot11rate = ieee80211_node_get_txrate_dot11rate(ni); + if (dot11rate & IEEE80211_RATE_MCS) frame_time = ieee80211_compute_duration_ht(framelen, - ni->ni_txrate, - IEEE80211_HT_RC_2_STREAMS(ni->ni_txrate), + dot11rate, + IEEE80211_HT_RC_2_STREAMS(dot11rate), 0, /* isht40 */ 0); /* isshortgi */ else frame_time = ieee80211_compute_duration(ic->ic_rt, framelen, - ni->ni_txrate, 0); + dot11rate, 0); return (frame_time); } /* * Check if the supplied frame can be partnered with an existing * or pending frame. Return a reference to any frame that should be * sent on return; otherwise return NULL. */ struct mbuf * ieee80211_ff_check(struct ieee80211_node *ni, struct mbuf *m) { struct ieee80211vap *vap = ni->ni_vap; struct ieee80211com *ic = ni->ni_ic; struct ieee80211_superg *sg = ic->ic_superg; const int pri = M_WME_GETAC(m); struct ieee80211_stageq *sq; struct ieee80211_tx_ampdu *tap; struct mbuf *mstaged; uint32_t txtime, limit; IEEE80211_TX_UNLOCK_ASSERT(ic); IEEE80211_LOCK(ic); limit = IEEE80211_TXOP_TO_US( ic->ic_wme.wme_chanParams.cap_wmeParams[pri].wmep_txopLimit); IEEE80211_UNLOCK(ic); /* * Check if the supplied frame can be aggregated. * * NB: we allow EAPOL frames to be aggregated with other ucast traffic. * Do 802.1x EAPOL frames proceed in the clear? Then they couldn't * be aggregated with other types of frames when encryption is on? */ IEEE80211_FF_LOCK(ic); tap = &ni->ni_tx_ampdu[WME_AC_TO_TID(pri)]; mstaged = ni->ni_tx_superg[WME_AC_TO_TID(pri)]; /* XXX NOTE: reusing packet counter state from A-MPDU */ /* * XXX NOTE: this means we're double-counting; it should just * be done in ieee80211_output.c once for both superg and A-MPDU. */ ieee80211_txampdu_count_packet(tap); /* * When not in station mode never aggregate a multicast * frame; this insures, for example, that a combined frame * does not require multiple encryption keys. */ if (vap->iv_opmode != IEEE80211_M_STA && ETHER_IS_MULTICAST(mtod(m, struct ether_header *)->ether_dhost)) { /* XXX flush staged frame? */ IEEE80211_FF_UNLOCK(ic); return m; } /* * If there is no frame to combine with and the pps is * too low; then do not attempt to aggregate this frame. */ if (mstaged == NULL && ieee80211_txampdu_getpps(tap) < ieee80211_ffppsmin) { IEEE80211_FF_UNLOCK(ic); return m; } sq = &sg->ff_stageq[pri]; /* * Check the txop limit to insure the aggregate fits. */ if (limit != 0 && (txtime = ff_approx_txtime(ni, m, mstaged)) > limit) { /* * Aggregate too long, return to the caller for direct * transmission. In addition, flush any pending frame * before sending this one. */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: txtime %u exceeds txop limit %u\n", __func__, txtime, limit); ni->ni_tx_superg[WME_AC_TO_TID(pri)] = NULL; if (mstaged != NULL) stageq_remove(ic, sq, mstaged); IEEE80211_FF_UNLOCK(ic); if (mstaged != NULL) { IEEE80211_TX_LOCK(ic); IEEE80211_NOTE(vap, IEEE80211_MSG_SUPERG, ni, "%s: flush staged frame", __func__); /* encap and xmit */ ff_transmit(ni, mstaged); IEEE80211_TX_UNLOCK(ic); } return m; /* NB: original frame */ } /* * An aggregation candidate. If there's a frame to partner * with then combine and return for processing. Otherwise * save this frame and wait for a partner to show up (or * the frame to be flushed). Note that staged frames also * hold their node reference. */ if (mstaged != NULL) { ni->ni_tx_superg[WME_AC_TO_TID(pri)] = NULL; stageq_remove(ic, sq, mstaged); IEEE80211_FF_UNLOCK(ic); IEEE80211_NOTE(vap, IEEE80211_MSG_SUPERG, ni, "%s: aggregate fast-frame", __func__); /* * Release the node reference; we only need * the one already in mstaged. */ KASSERT(mstaged->m_pkthdr.rcvif == (void *)ni, ("rcvif %p ni %p", mstaged->m_pkthdr.rcvif, ni)); ieee80211_free_node(ni); m->m_nextpkt = NULL; mstaged->m_nextpkt = m; mstaged->m_flags |= M_FF; /* NB: mark for encap work */ } else { KASSERT(ni->ni_tx_superg[WME_AC_TO_TID(pri)] == NULL, ("ni_tx_superg[]: %p", ni->ni_tx_superg[WME_AC_TO_TID(pri)])); ni->ni_tx_superg[WME_AC_TO_TID(pri)] = m; stageq_add(ic, sq, m); IEEE80211_FF_UNLOCK(ic); IEEE80211_NOTE(vap, IEEE80211_MSG_SUPERG, ni, "%s: stage frame, %u queued", __func__, sq->depth); /* NB: mstaged is NULL */ } return mstaged; } struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m) { /* * XXX TODO: actually enforce the node support * and HTCAP requirements for the maximum A-MSDU * size. */ /* First: software A-MSDU transmit? */ if (! ieee80211_amsdu_tx_ok(ni)) return (m); /* Next - EAPOL? Nope, don't aggregate; we don't QoS encap them */ if (m->m_flags & (M_EAPOL | M_MCAST | M_BCAST)) return (m); /* Next - needs to be a data frame, non-broadcast, etc */ if (ETHER_IS_MULTICAST(mtod(m, struct ether_header *)->ether_dhost)) return (m); return (ieee80211_ff_check(ni, m)); } void ieee80211_ff_node_init(struct ieee80211_node *ni) { /* * Clean FF state on re-associate. This handles the case * where a station leaves w/o notifying us and then returns * before node is reaped for inactivity. */ ieee80211_ff_node_cleanup(ni); } void ieee80211_ff_node_cleanup(struct ieee80211_node *ni) { struct ieee80211com *ic = ni->ni_ic; struct ieee80211_superg *sg = ic->ic_superg; struct mbuf *m, *next_m, *head; int tid; IEEE80211_FF_LOCK(ic); head = NULL; for (tid = 0; tid < WME_NUM_TID; tid++) { int ac = TID_TO_WME_AC(tid); /* * XXX Initialise the packet counter. * * This may be double-work for 11n stations; * but without it we never setup things. */ ieee80211_txampdu_init_pps(&ni->ni_tx_ampdu[tid]); m = ni->ni_tx_superg[tid]; if (m != NULL) { ni->ni_tx_superg[tid] = NULL; stageq_remove(ic, &sg->ff_stageq[ac], m); m->m_nextpkt = head; head = m; } } IEEE80211_FF_UNLOCK(ic); /* * Free mbufs, taking care to not dereference the mbuf after * we free it (hence grabbing m_nextpkt before we free it.) */ m = head; while (m != NULL) { next_m = m->m_nextpkt; m_freem(m); ieee80211_free_node(ni); m = next_m; } } /* * Switch between turbo and non-turbo operating modes. * Use the specified channel flags to locate the new * channel, update 802.11 state, and then call back into * the driver to effect the change. */ void ieee80211_dturbo_switch(struct ieee80211vap *vap, int newflags) { struct ieee80211com *ic = vap->iv_ic; struct ieee80211_channel *chan; chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags); if (chan == NULL) { /* XXX should not happen */ IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: no channel with freq %u flags 0x%x\n", __func__, ic->ic_bsschan->ic_freq, newflags); return; } IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPERG, "%s: %s -> %s (freq %u flags 0x%x)\n", __func__, ieee80211_phymode_name[ieee80211_chan2mode(ic->ic_bsschan)], ieee80211_phymode_name[ieee80211_chan2mode(chan)], chan->ic_freq, chan->ic_flags); ic->ic_bsschan = chan; ic->ic_prevchan = ic->ic_curchan; ic->ic_curchan = chan; ic->ic_rt = ieee80211_get_ratetable(chan); ic->ic_set_channel(ic); ieee80211_radiotap_chan_change(ic); /* NB: do not need to reset ERP state 'cuz we're in sta mode */ } /* * Return the current ``state'' of an Atheros capbility. * If associated in station mode report the negotiated * setting. Otherwise report the current setting. */ static int getathcap(struct ieee80211vap *vap, int cap) { if (vap->iv_opmode == IEEE80211_M_STA && vap->iv_state == IEEE80211_S_RUN) return IEEE80211_ATH_CAP(vap, vap->iv_bss, cap) != 0; else return (vap->iv_flags & cap) != 0; } static int superg_ioctl_get80211(struct ieee80211vap *vap, struct ieee80211req *ireq) { switch (ireq->i_type) { case IEEE80211_IOC_FF: ireq->i_val = getathcap(vap, IEEE80211_F_FF); break; case IEEE80211_IOC_TURBOP: ireq->i_val = getathcap(vap, IEEE80211_F_TURBOP); break; default: return ENOSYS; } return 0; } IEEE80211_IOCTL_GET(superg, superg_ioctl_get80211); static int superg_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq) { switch (ireq->i_type) { case IEEE80211_IOC_FF: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_FF) == 0) return EOPNOTSUPP; vap->iv_flags |= IEEE80211_F_FF; } else vap->iv_flags &= ~IEEE80211_F_FF; return ENETRESET; case IEEE80211_IOC_TURBOP: if (ireq->i_val) { if ((vap->iv_caps & IEEE80211_C_TURBOP) == 0) return EOPNOTSUPP; vap->iv_flags |= IEEE80211_F_TURBOP; } else vap->iv_flags &= ~IEEE80211_F_TURBOP; return ENETRESET; default: return ENOSYS; } } IEEE80211_IOCTL_SET(superg, superg_ioctl_set80211); #endif /* IEEE80211_SUPPORT_SUPERG */