Index: head/sys/net/ieee8023ad_lacp.c =================================================================== --- head/sys/net/ieee8023ad_lacp.c (revision 272174) +++ head/sys/net/ieee8023ad_lacp.c (revision 272175) @@ -1,2060 +1,2060 @@ /* $NetBSD: ieee8023ad_lacp.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */ /*- * Copyright (c)2005 YAMAMOTO Takashi, * Copyright (c)2008 Andrew Thompson * 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 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include /* hz */ #include /* for net/if.h */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * actor system priority and port priority. * XXX should be configurable. */ #define LACP_SYSTEM_PRIO 0x8000 #define LACP_PORT_PRIO 0x8000 const uint8_t ethermulticastaddr_slowprotocols[ETHER_ADDR_LEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 }; static const struct tlv_template lacp_info_tlv_template[] = { { LACP_TYPE_ACTORINFO, sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, { LACP_TYPE_PARTNERINFO, sizeof(struct tlvhdr) + sizeof(struct lacp_peerinfo) }, { LACP_TYPE_COLLECTORINFO, sizeof(struct tlvhdr) + sizeof(struct lacp_collectorinfo) }, { 0, 0 }, }; static const struct tlv_template marker_info_tlv_template[] = { { MARKER_TYPE_INFO, sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, { 0, 0 }, }; static const struct tlv_template marker_response_tlv_template[] = { { MARKER_TYPE_RESPONSE, sizeof(struct tlvhdr) + sizeof(struct lacp_markerinfo) }, { 0, 0 }, }; typedef void (*lacp_timer_func_t)(struct lacp_port *); static void lacp_fill_actorinfo(struct lacp_port *, struct lacp_peerinfo *); static void lacp_fill_markerinfo(struct lacp_port *, struct lacp_markerinfo *); static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *); static void lacp_suppress_distributing(struct lacp_softc *, struct lacp_aggregator *); static void lacp_transit_expire(void *); static void lacp_update_portmap(struct lacp_softc *); static void lacp_select_active_aggregator(struct lacp_softc *); static uint16_t lacp_compose_key(struct lacp_port *); static int tlv_check(const void *, size_t, const struct tlvhdr *, const struct tlv_template *, boolean_t); static void lacp_tick(void *); static void lacp_fill_aggregator_id(struct lacp_aggregator *, const struct lacp_port *); static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *, const struct lacp_peerinfo *); static int lacp_aggregator_is_compatible(const struct lacp_aggregator *, const struct lacp_port *); static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *, const struct lacp_peerinfo *); static struct lacp_aggregator *lacp_aggregator_get(struct lacp_softc *, struct lacp_port *); static void lacp_aggregator_addref(struct lacp_softc *, struct lacp_aggregator *); static void lacp_aggregator_delref(struct lacp_softc *, struct lacp_aggregator *); /* receive machine */ static int lacp_pdu_input(struct lacp_port *, struct mbuf *); static int lacp_marker_input(struct lacp_port *, struct mbuf *); static void lacp_sm_rx(struct lacp_port *, const struct lacpdu *); static void lacp_sm_rx_timer(struct lacp_port *); static void lacp_sm_rx_set_expired(struct lacp_port *); static void lacp_sm_rx_update_ntt(struct lacp_port *, const struct lacpdu *); static void lacp_sm_rx_record_pdu(struct lacp_port *, const struct lacpdu *); static void lacp_sm_rx_update_selected(struct lacp_port *, const struct lacpdu *); static void lacp_sm_rx_record_default(struct lacp_port *); static void lacp_sm_rx_update_default_selected(struct lacp_port *); static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *, const struct lacp_peerinfo *); /* mux machine */ static void lacp_sm_mux(struct lacp_port *); static void lacp_set_mux(struct lacp_port *, enum lacp_mux_state); static void lacp_sm_mux_timer(struct lacp_port *); /* periodic transmit machine */ static void lacp_sm_ptx_update_timeout(struct lacp_port *, uint8_t); static void lacp_sm_ptx_tx_schedule(struct lacp_port *); static void lacp_sm_ptx_timer(struct lacp_port *); /* transmit machine */ static void lacp_sm_tx(struct lacp_port *); static void lacp_sm_assert_ntt(struct lacp_port *); static void lacp_run_timers(struct lacp_port *); static int lacp_compare_peerinfo(const struct lacp_peerinfo *, const struct lacp_peerinfo *); static int lacp_compare_systemid(const struct lacp_systemid *, const struct lacp_systemid *); static void lacp_port_enable(struct lacp_port *); static void lacp_port_disable(struct lacp_port *); static void lacp_select(struct lacp_port *); static void lacp_unselect(struct lacp_port *); static void lacp_disable_collecting(struct lacp_port *); static void lacp_enable_collecting(struct lacp_port *); static void lacp_disable_distributing(struct lacp_port *); static void lacp_enable_distributing(struct lacp_port *); static int lacp_xmit_lacpdu(struct lacp_port *); static int lacp_xmit_marker(struct lacp_port *); /* Debugging */ static void lacp_dump_lacpdu(const struct lacpdu *); static const char *lacp_format_partner(const struct lacp_peerinfo *, char *, size_t); static const char *lacp_format_lagid(const struct lacp_peerinfo *, const struct lacp_peerinfo *, char *, size_t); static const char *lacp_format_lagid_aggregator(const struct lacp_aggregator *, char *, size_t); static const char *lacp_format_state(uint8_t, char *, size_t); static const char *lacp_format_mac(const uint8_t *, char *, size_t); static const char *lacp_format_systemid(const struct lacp_systemid *, char *, size_t); static const char *lacp_format_portid(const struct lacp_portid *, char *, size_t); static void lacp_dprintf(const struct lacp_port *, const char *, ...) __attribute__((__format__(__printf__, 2, 3))); static int lacp_debug = 0; SYSCTL_NODE(_net_link_lagg, OID_AUTO, lacp, CTLFLAG_RD, 0, "ieee802.3ad"); SYSCTL_INT(_net_link_lagg_lacp, OID_AUTO, debug, CTLFLAG_RWTUN, &lacp_debug, 0, "Enable LACP debug logging (1=debug, 2=trace)"); #define LACP_DPRINTF(a) if (lacp_debug & 0x01) { lacp_dprintf a ; } #define LACP_TRACE(a) if (lacp_debug & 0x02) { lacp_dprintf(a,"%s\n",__func__); } #define LACP_TPRINTF(a) if (lacp_debug & 0x04) { lacp_dprintf a ; } /* * partner administration variables. * XXX should be configurable. */ static const struct lacp_peerinfo lacp_partner_admin_optimistic = { .lip_systemid = { .lsi_prio = 0xffff }, .lip_portid = { .lpi_prio = 0xffff }, .lip_state = LACP_STATE_SYNC | LACP_STATE_AGGREGATION | LACP_STATE_COLLECTING | LACP_STATE_DISTRIBUTING, }; static const struct lacp_peerinfo lacp_partner_admin_strict = { .lip_systemid = { .lsi_prio = 0xffff }, .lip_portid = { .lpi_prio = 0xffff }, .lip_state = 0, }; static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = { [LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer, [LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer, [LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer, }; struct mbuf * lacp_input(struct lagg_port *lgp, struct mbuf *m) { struct lacp_port *lp = LACP_PORT(lgp); uint8_t subtype; if (m->m_pkthdr.len < sizeof(struct ether_header) + sizeof(subtype)) { m_freem(m); return (NULL); } m_copydata(m, sizeof(struct ether_header), sizeof(subtype), &subtype); switch (subtype) { case SLOWPROTOCOLS_SUBTYPE_LACP: lacp_pdu_input(lp, m); return (NULL); case SLOWPROTOCOLS_SUBTYPE_MARKER: lacp_marker_input(lp, m); return (NULL); } /* Not a subtype we are interested in */ return (m); } /* * lacp_pdu_input: process lacpdu */ static int lacp_pdu_input(struct lacp_port *lp, struct mbuf *m) { struct lacp_softc *lsc = lp->lp_lsc; struct lacpdu *du; int error = 0; if (m->m_pkthdr.len != sizeof(*du)) { goto bad; } if ((m->m_flags & M_MCAST) == 0) { goto bad; } if (m->m_len < sizeof(*du)) { m = m_pullup(m, sizeof(*du)); if (m == NULL) { return (ENOMEM); } } du = mtod(m, struct lacpdu *); if (memcmp(&du->ldu_eh.ether_dhost, ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { goto bad; } /* * ignore the version for compatibility with * the future protocol revisions. */ #if 0 if (du->ldu_sph.sph_version != 1) { goto bad; } #endif /* * ignore tlv types for compatibility with * the future protocol revisions. */ if (tlv_check(du, sizeof(*du), &du->ldu_tlv_actor, lacp_info_tlv_template, FALSE)) { goto bad; } - if (lacp_debug > 0) { + if (lacp_debug > 0) { lacp_dprintf(lp, "lacpdu receive\n"); lacp_dump_lacpdu(du); } if ((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_rx_test) { LACP_TPRINTF((lp, "Dropping RX PDU\n")); goto bad; } LACP_LOCK(lsc); lacp_sm_rx(lp, du); LACP_UNLOCK(lsc); m_freem(m); return (error); bad: m_freem(m); return (EINVAL); } static void lacp_fill_actorinfo(struct lacp_port *lp, struct lacp_peerinfo *info) { struct lagg_port *lgp = lp->lp_lagg; struct lagg_softc *sc = lgp->lp_softc; info->lip_systemid.lsi_prio = htons(LACP_SYSTEM_PRIO); memcpy(&info->lip_systemid.lsi_mac, IF_LLADDR(sc->sc_ifp), ETHER_ADDR_LEN); info->lip_portid.lpi_prio = htons(LACP_PORT_PRIO); info->lip_portid.lpi_portno = htons(lp->lp_ifp->if_index); info->lip_state = lp->lp_state; } static void lacp_fill_markerinfo(struct lacp_port *lp, struct lacp_markerinfo *info) { struct ifnet *ifp = lp->lp_ifp; /* Fill in the port index and system id (encoded as the MAC) */ info->mi_rq_port = htons(ifp->if_index); memcpy(&info->mi_rq_system, lp->lp_systemid.lsi_mac, ETHER_ADDR_LEN); info->mi_rq_xid = htonl(0); } static int lacp_xmit_lacpdu(struct lacp_port *lp) { struct lagg_port *lgp = lp->lp_lagg; struct mbuf *m; struct lacpdu *du; int error; LACP_LOCK_ASSERT(lp->lp_lsc); m = m_gethdr(M_NOWAIT, MT_DATA); if (m == NULL) { return (ENOMEM); } m->m_len = m->m_pkthdr.len = sizeof(*du); du = mtod(m, struct lacpdu *); memset(du, 0, sizeof(*du)); memcpy(&du->ldu_eh.ether_dhost, ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN); memcpy(&du->ldu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); du->ldu_eh.ether_type = htons(ETHERTYPE_SLOW); du->ldu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_LACP; du->ldu_sph.sph_version = 1; TLV_SET(&du->ldu_tlv_actor, LACP_TYPE_ACTORINFO, sizeof(du->ldu_actor)); du->ldu_actor = lp->lp_actor; TLV_SET(&du->ldu_tlv_partner, LACP_TYPE_PARTNERINFO, sizeof(du->ldu_partner)); du->ldu_partner = lp->lp_partner; TLV_SET(&du->ldu_tlv_collector, LACP_TYPE_COLLECTORINFO, sizeof(du->ldu_collector)); du->ldu_collector.lci_maxdelay = 0; if (lacp_debug > 0) { lacp_dprintf(lp, "lacpdu transmit\n"); lacp_dump_lacpdu(du); } m->m_flags |= M_MCAST; /* * XXX should use higher priority queue. * otherwise network congestion can break aggregation. */ error = lagg_enqueue(lp->lp_ifp, m); return (error); } static int lacp_xmit_marker(struct lacp_port *lp) { struct lagg_port *lgp = lp->lp_lagg; struct mbuf *m; struct markerdu *mdu; int error; LACP_LOCK_ASSERT(lp->lp_lsc); m = m_gethdr(M_NOWAIT, MT_DATA); if (m == NULL) { return (ENOMEM); } m->m_len = m->m_pkthdr.len = sizeof(*mdu); mdu = mtod(m, struct markerdu *); memset(mdu, 0, sizeof(*mdu)); memcpy(&mdu->mdu_eh.ether_dhost, ethermulticastaddr_slowprotocols, ETHER_ADDR_LEN); memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); mdu->mdu_eh.ether_type = htons(ETHERTYPE_SLOW); mdu->mdu_sph.sph_subtype = SLOWPROTOCOLS_SUBTYPE_MARKER; mdu->mdu_sph.sph_version = 1; /* Bump the transaction id and copy over the marker info */ lp->lp_marker.mi_rq_xid = htonl(ntohl(lp->lp_marker.mi_rq_xid) + 1); TLV_SET(&mdu->mdu_tlv, MARKER_TYPE_INFO, sizeof(mdu->mdu_info)); mdu->mdu_info = lp->lp_marker; LACP_DPRINTF((lp, "marker transmit, port=%u, sys=%6D, id=%u\n", ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", ntohl(mdu->mdu_info.mi_rq_xid))); m->m_flags |= M_MCAST; error = lagg_enqueue(lp->lp_ifp, m); return (error); } void lacp_linkstate(struct lagg_port *lgp) { struct lacp_port *lp = LACP_PORT(lgp); struct lacp_softc *lsc = lp->lp_lsc; struct ifnet *ifp = lgp->lp_ifp; struct ifmediareq ifmr; int error = 0; u_int media; uint8_t old_state; uint16_t old_key; bzero((char *)&ifmr, sizeof(ifmr)); error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr); if (error != 0) return; LACP_LOCK(lsc); media = ifmr.ifm_active; LACP_DPRINTF((lp, "media changed 0x%x -> 0x%x, ether = %d, fdx = %d, " "link = %d\n", lp->lp_media, media, IFM_TYPE(media) == IFM_ETHER, (media & IFM_FDX) != 0, ifp->if_link_state == LINK_STATE_UP)); old_state = lp->lp_state; old_key = lp->lp_key; lp->lp_media = media; /* * If the port is not an active full duplex Ethernet link then it can * not be aggregated. */ if (IFM_TYPE(media) != IFM_ETHER || (media & IFM_FDX) == 0 || ifp->if_link_state != LINK_STATE_UP) { lacp_port_disable(lp); } else { lacp_port_enable(lp); } lp->lp_key = lacp_compose_key(lp); if (old_state != lp->lp_state || old_key != lp->lp_key) { LACP_DPRINTF((lp, "-> UNSELECTED\n")); lp->lp_selected = LACP_UNSELECTED; } LACP_UNLOCK(lsc); } static void lacp_tick(void *arg) { struct lacp_softc *lsc = arg; struct lacp_port *lp; LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) continue; lacp_run_timers(lp); lacp_select(lp); lacp_sm_mux(lp); lacp_sm_tx(lp); lacp_sm_ptx_tx_schedule(lp); } callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); } int lacp_port_create(struct lagg_port *lgp) { struct lagg_softc *sc = lgp->lp_softc; struct lacp_softc *lsc = LACP_SOFTC(sc); struct lacp_port *lp; struct ifnet *ifp = lgp->lp_ifp; struct sockaddr_dl sdl; struct ifmultiaddr *rifma = NULL; int error; boolean_t active = TRUE; /* XXX should be configurable */ boolean_t fast = FALSE; /* XXX should be configurable */ link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER); sdl.sdl_alen = ETHER_ADDR_LEN; bcopy(ðermulticastaddr_slowprotocols, LLADDR(&sdl), ETHER_ADDR_LEN); error = if_addmulti(ifp, (struct sockaddr *)&sdl, &rifma); if (error) { printf("%s: ADDMULTI failed on %s\n", __func__, lgp->lp_ifname); return (error); } lp = malloc(sizeof(struct lacp_port), M_DEVBUF, M_NOWAIT|M_ZERO); if (lp == NULL) return (ENOMEM); LACP_LOCK(lsc); - lgp->lp_psc = (caddr_t)lp; + lgp->lp_psc = lp; lp->lp_ifp = ifp; lp->lp_lagg = lgp; lp->lp_lsc = lsc; lp->lp_ifma = rifma; LIST_INSERT_HEAD(&lsc->lsc_ports, lp, lp_next); lacp_fill_actorinfo(lp, &lp->lp_actor); lacp_fill_markerinfo(lp, &lp->lp_marker); lp->lp_state = (active ? LACP_STATE_ACTIVITY : 0) | (fast ? LACP_STATE_TIMEOUT : 0); lp->lp_aggregator = NULL; lacp_sm_rx_set_expired(lp); LACP_UNLOCK(lsc); lacp_linkstate(lgp); return (0); } void lacp_port_destroy(struct lagg_port *lgp) { struct lacp_port *lp = LACP_PORT(lgp); struct lacp_softc *lsc = lp->lp_lsc; int i; LACP_LOCK(lsc); for (i = 0; i < LACP_NTIMER; i++) { LACP_TIMER_DISARM(lp, i); } lacp_disable_collecting(lp); lacp_disable_distributing(lp); lacp_unselect(lp); /* The address may have already been removed by if_purgemaddrs() */ if (!lgp->lp_detaching) if_delmulti_ifma(lp->lp_ifma); LIST_REMOVE(lp, lp_next); LACP_UNLOCK(lsc); free(lp, M_DEVBUF); } void -lacp_req(struct lagg_softc *sc, caddr_t data) +lacp_req(struct lagg_softc *sc, void *data) { struct lacp_opreq *req = (struct lacp_opreq *)data; struct lacp_softc *lsc = LACP_SOFTC(sc); struct lacp_aggregator *la; bzero(req, sizeof(struct lacp_opreq)); - /* + /* * If the LACP softc is NULL, return with the opreq structure full of * zeros. It is normal for the softc to be NULL while the lagg is * being destroyed. */ if (NULL == lsc) return; la = lsc->lsc_active_aggregator; LACP_LOCK(lsc); if (la != NULL) { req->actor_prio = ntohs(la->la_actor.lip_systemid.lsi_prio); memcpy(&req->actor_mac, &la->la_actor.lip_systemid.lsi_mac, ETHER_ADDR_LEN); req->actor_key = ntohs(la->la_actor.lip_key); req->actor_portprio = ntohs(la->la_actor.lip_portid.lpi_prio); req->actor_portno = ntohs(la->la_actor.lip_portid.lpi_portno); req->actor_state = la->la_actor.lip_state; req->partner_prio = ntohs(la->la_partner.lip_systemid.lsi_prio); memcpy(&req->partner_mac, &la->la_partner.lip_systemid.lsi_mac, ETHER_ADDR_LEN); req->partner_key = ntohs(la->la_partner.lip_key); req->partner_portprio = ntohs(la->la_partner.lip_portid.lpi_prio); req->partner_portno = ntohs(la->la_partner.lip_portid.lpi_portno); req->partner_state = la->la_partner.lip_state; } LACP_UNLOCK(lsc); } void -lacp_portreq(struct lagg_port *lgp, caddr_t data) +lacp_portreq(struct lagg_port *lgp, void *data) { struct lacp_opreq *req = (struct lacp_opreq *)data; struct lacp_port *lp = LACP_PORT(lgp); struct lacp_softc *lsc = lp->lp_lsc; LACP_LOCK(lsc); req->actor_prio = ntohs(lp->lp_actor.lip_systemid.lsi_prio); memcpy(&req->actor_mac, &lp->lp_actor.lip_systemid.lsi_mac, ETHER_ADDR_LEN); req->actor_key = ntohs(lp->lp_actor.lip_key); req->actor_portprio = ntohs(lp->lp_actor.lip_portid.lpi_prio); req->actor_portno = ntohs(lp->lp_actor.lip_portid.lpi_portno); req->actor_state = lp->lp_actor.lip_state; req->partner_prio = ntohs(lp->lp_partner.lip_systemid.lsi_prio); memcpy(&req->partner_mac, &lp->lp_partner.lip_systemid.lsi_mac, ETHER_ADDR_LEN); req->partner_key = ntohs(lp->lp_partner.lip_key); req->partner_portprio = ntohs(lp->lp_partner.lip_portid.lpi_prio); req->partner_portno = ntohs(lp->lp_partner.lip_portid.lpi_portno); req->partner_state = lp->lp_partner.lip_state; LACP_UNLOCK(lsc); } static void lacp_disable_collecting(struct lacp_port *lp) { LACP_DPRINTF((lp, "collecting disabled\n")); lp->lp_state &= ~LACP_STATE_COLLECTING; } static void lacp_enable_collecting(struct lacp_port *lp) { LACP_DPRINTF((lp, "collecting enabled\n")); lp->lp_state |= LACP_STATE_COLLECTING; } static void lacp_disable_distributing(struct lacp_port *lp) { struct lacp_aggregator *la = lp->lp_aggregator; struct lacp_softc *lsc = lp->lp_lsc; struct lagg_softc *sc = lsc->lsc_softc; char buf[LACP_LAGIDSTR_MAX+1]; LACP_LOCK_ASSERT(lsc); if (la == NULL || (lp->lp_state & LACP_STATE_DISTRIBUTING) == 0) { return; } KASSERT(!TAILQ_EMPTY(&la->la_ports), ("no aggregator ports")); KASSERT(la->la_nports > 0, ("nports invalid (%d)", la->la_nports)); KASSERT(la->la_refcnt >= la->la_nports, ("aggregator refcnt invalid")); LACP_DPRINTF((lp, "disable distributing on aggregator %s, " "nports %d -> %d\n", lacp_format_lagid_aggregator(la, buf, sizeof(buf)), la->la_nports, la->la_nports - 1)); TAILQ_REMOVE(&la->la_ports, lp, lp_dist_q); la->la_nports--; sc->sc_active = la->la_nports; if (lsc->lsc_active_aggregator == la) { lacp_suppress_distributing(lsc, la); lacp_select_active_aggregator(lsc); /* regenerate the port map, the active aggregator has changed */ lacp_update_portmap(lsc); } lp->lp_state &= ~LACP_STATE_DISTRIBUTING; } static void lacp_enable_distributing(struct lacp_port *lp) { struct lacp_aggregator *la = lp->lp_aggregator; struct lacp_softc *lsc = lp->lp_lsc; struct lagg_softc *sc = lsc->lsc_softc; char buf[LACP_LAGIDSTR_MAX+1]; LACP_LOCK_ASSERT(lsc); if ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0) { return; } LACP_DPRINTF((lp, "enable distributing on aggregator %s, " "nports %d -> %d\n", lacp_format_lagid_aggregator(la, buf, sizeof(buf)), la->la_nports, la->la_nports + 1)); KASSERT(la->la_refcnt > la->la_nports, ("aggregator refcnt invalid")); TAILQ_INSERT_HEAD(&la->la_ports, lp, lp_dist_q); la->la_nports++; sc->sc_active = la->la_nports; lp->lp_state |= LACP_STATE_DISTRIBUTING; if (lsc->lsc_active_aggregator == la) { lacp_suppress_distributing(lsc, la); lacp_update_portmap(lsc); } else /* try to become the active aggregator */ lacp_select_active_aggregator(lsc); } static void lacp_transit_expire(void *vp) { struct lacp_softc *lsc = vp; LACP_LOCK_ASSERT(lsc); LACP_TRACE(NULL); lsc->lsc_suppress_distributing = FALSE; } static void lacp_attach_sysctl(struct lacp_softc *lsc, struct sysctl_oid *p_oid) { struct lagg_softc *sc = lsc->lsc_softc; SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(p_oid), OID_AUTO, "lacp_strict_mode", CTLFLAG_RW, &lsc->lsc_strict_mode, lsc->lsc_strict_mode, "Enable LACP strict mode"); } static void lacp_attach_sysctl_debug(struct lacp_softc *lsc, struct sysctl_oid *p_oid) { struct lagg_softc *sc = lsc->lsc_softc; struct sysctl_oid *oid; /* Create a child of the parent lagg interface */ oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(p_oid), OID_AUTO, "debug", CTLFLAG_RD, NULL, "DEBUG"); SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "rx_test", CTLFLAG_RW, &lsc->lsc_debug.lsc_rx_test, lsc->lsc_debug.lsc_rx_test, "Bitmap of if_dunit entries to drop RX frames for"); SYSCTL_ADD_UINT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "tx_test", CTLFLAG_RW, &lsc->lsc_debug.lsc_tx_test, lsc->lsc_debug.lsc_tx_test, "Bitmap of if_dunit entries to drop TX frames for"); } void lacp_attach(struct lagg_softc *sc) { struct lacp_softc *lsc; struct sysctl_oid *oid; lsc = malloc(sizeof(struct lacp_softc), M_DEVBUF, M_WAITOK | M_ZERO); - sc->sc_psc = (caddr_t)lsc; + sc->sc_psc = lsc; lsc->lsc_softc = sc; lsc->lsc_hashkey = arc4random(); lsc->lsc_active_aggregator = NULL; lsc->lsc_strict_mode = 1; LACP_LOCK_INIT(lsc); TAILQ_INIT(&lsc->lsc_aggregators); LIST_INIT(&lsc->lsc_ports); /* Create a child of the parent lagg interface */ oid = SYSCTL_ADD_NODE(&sc->ctx, SYSCTL_CHILDREN(sc->sc_oid), OID_AUTO, "lacp", CTLFLAG_RD, NULL, "LACP"); /* Attach sysctl nodes */ lacp_attach_sysctl(lsc, oid); lacp_attach_sysctl_debug(lsc, oid); callout_init_mtx(&lsc->lsc_transit_callout, &lsc->lsc_mtx, 0); callout_init_mtx(&lsc->lsc_callout, &lsc->lsc_mtx, 0); /* if the lagg is already up then do the same */ if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) lacp_init(sc); } void lacp_detach(void *psc) { struct lacp_softc *lsc = (struct lacp_softc *)psc; KASSERT(TAILQ_EMPTY(&lsc->lsc_aggregators), ("aggregators still active")); KASSERT(lsc->lsc_active_aggregator == NULL, ("aggregator still attached")); callout_drain(&lsc->lsc_transit_callout); callout_drain(&lsc->lsc_callout); LACP_LOCK_DESTROY(lsc); free(lsc, M_DEVBUF); } void lacp_init(struct lagg_softc *sc) { struct lacp_softc *lsc = LACP_SOFTC(sc); LACP_LOCK(lsc); callout_reset(&lsc->lsc_callout, hz, lacp_tick, lsc); LACP_UNLOCK(lsc); } void lacp_stop(struct lagg_softc *sc) { struct lacp_softc *lsc = LACP_SOFTC(sc); LACP_LOCK(lsc); callout_stop(&lsc->lsc_transit_callout); callout_stop(&lsc->lsc_callout); LACP_UNLOCK(lsc); } struct lagg_port * lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m) { struct lacp_softc *lsc = LACP_SOFTC(sc); struct lacp_portmap *pm; struct lacp_port *lp; uint32_t hash; if (__predict_false(lsc->lsc_suppress_distributing)) { LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__)); return (NULL); } pm = &lsc->lsc_pmap[lsc->lsc_activemap]; if (pm->pm_count == 0) { LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__)); return (NULL); } if (sc->use_flowid && (m->m_flags & M_FLOWID)) hash = m->m_pkthdr.flowid >> sc->flowid_shift; else hash = lagg_hashmbuf(sc, m, lsc->lsc_hashkey); hash %= pm->pm_count; lp = pm->pm_map[hash]; KASSERT((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0, ("aggregated port is not distributing")); return (lp->lp_lagg); } /* * lacp_suppress_distributing: drop transmit packets for a while * to preserve packet ordering. */ static void lacp_suppress_distributing(struct lacp_softc *lsc, struct lacp_aggregator *la) { struct lacp_port *lp; if (lsc->lsc_active_aggregator != la) { return; } LACP_TRACE(NULL); lsc->lsc_suppress_distributing = TRUE; /* send a marker frame down each port to verify the queues are empty */ LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) { lp->lp_flags |= LACP_PORT_MARK; lacp_xmit_marker(lp); } /* set a timeout for the marker frames */ callout_reset(&lsc->lsc_transit_callout, LACP_TRANSIT_DELAY * hz / 1000, lacp_transit_expire, lsc); } static int lacp_compare_peerinfo(const struct lacp_peerinfo *a, const struct lacp_peerinfo *b) { return (memcmp(a, b, offsetof(struct lacp_peerinfo, lip_state))); } static int lacp_compare_systemid(const struct lacp_systemid *a, const struct lacp_systemid *b) { return (memcmp(a, b, sizeof(*a))); } #if 0 /* unused */ static int lacp_compare_portid(const struct lacp_portid *a, const struct lacp_portid *b) { return (memcmp(a, b, sizeof(*a))); } #endif static uint64_t lacp_aggregator_bandwidth(struct lacp_aggregator *la) { struct lacp_port *lp; uint64_t speed; lp = TAILQ_FIRST(&la->la_ports); if (lp == NULL) { return (0); } speed = ifmedia_baudrate(lp->lp_media); speed *= la->la_nports; if (speed == 0) { LACP_DPRINTF((lp, "speed 0? media=0x%x nports=%d\n", lp->lp_media, la->la_nports)); } return (speed); } /* * lacp_select_active_aggregator: select an aggregator to be used to transmit * packets from lagg(4) interface. */ static void lacp_select_active_aggregator(struct lacp_softc *lsc) { struct lacp_aggregator *la; struct lacp_aggregator *best_la = NULL; uint64_t best_speed = 0; char buf[LACP_LAGIDSTR_MAX+1]; LACP_TRACE(NULL); TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { uint64_t speed; if (la->la_nports == 0) { continue; } speed = lacp_aggregator_bandwidth(la); LACP_DPRINTF((NULL, "%s, speed=%jd, nports=%d\n", lacp_format_lagid_aggregator(la, buf, sizeof(buf)), speed, la->la_nports)); - /* This aggregator is chosen if - * the partner has a better system priority - * or, the total aggregated speed is higher - * or, it is already the chosen aggregator + /* + * This aggregator is chosen if the partner has a better + * system priority or, the total aggregated speed is higher + * or, it is already the chosen aggregator */ if ((best_la != NULL && LACP_SYS_PRI(la->la_partner) < - LACP_SYS_PRI(best_la->la_partner)) || + LACP_SYS_PRI(best_la->la_partner)) || speed > best_speed || (speed == best_speed && la == lsc->lsc_active_aggregator)) { best_la = la; best_speed = speed; } } KASSERT(best_la == NULL || best_la->la_nports > 0, ("invalid aggregator refcnt")); KASSERT(best_la == NULL || !TAILQ_EMPTY(&best_la->la_ports), ("invalid aggregator list")); if (lsc->lsc_active_aggregator != best_la) { LACP_DPRINTF((NULL, "active aggregator changed\n")); LACP_DPRINTF((NULL, "old %s\n", lacp_format_lagid_aggregator(lsc->lsc_active_aggregator, buf, sizeof(buf)))); } else { LACP_DPRINTF((NULL, "active aggregator not changed\n")); } LACP_DPRINTF((NULL, "new %s\n", lacp_format_lagid_aggregator(best_la, buf, sizeof(buf)))); if (lsc->lsc_active_aggregator != best_la) { lsc->lsc_active_aggregator = best_la; lacp_update_portmap(lsc); if (best_la) { lacp_suppress_distributing(lsc, best_la); } } } /* * Updated the inactive portmap array with the new list of ports and * make it live. */ static void lacp_update_portmap(struct lacp_softc *lsc) { struct lagg_softc *sc = lsc->lsc_softc; struct lacp_aggregator *la; struct lacp_portmap *p; struct lacp_port *lp; uint64_t speed; u_int newmap; int i; newmap = lsc->lsc_activemap == 0 ? 1 : 0; p = &lsc->lsc_pmap[newmap]; la = lsc->lsc_active_aggregator; speed = 0; bzero(p, sizeof(struct lacp_portmap)); if (la != NULL && la->la_nports > 0) { p->pm_count = la->la_nports; i = 0; TAILQ_FOREACH(lp, &la->la_ports, lp_dist_q) p->pm_map[i++] = lp; KASSERT(i == p->pm_count, ("Invalid port count")); speed = lacp_aggregator_bandwidth(la); } sc->sc_ifp->if_baudrate = speed; /* switch the active portmap over */ atomic_store_rel_int(&lsc->lsc_activemap, newmap); LACP_DPRINTF((NULL, "Set table %d with %d ports\n", lsc->lsc_activemap, lsc->lsc_pmap[lsc->lsc_activemap].pm_count)); } static uint16_t lacp_compose_key(struct lacp_port *lp) { struct lagg_port *lgp = lp->lp_lagg; struct lagg_softc *sc = lgp->lp_softc; u_int media = lp->lp_media; uint16_t key; if ((lp->lp_state & LACP_STATE_AGGREGATION) == 0) { /* * non-aggregatable links should have unique keys. * * XXX this isn't really unique as if_index is 16 bit. */ /* bit 0..14: (some bits of) if_index of this port */ key = lp->lp_ifp->if_index; /* bit 15: 1 */ key |= 0x8000; } else { u_int subtype = IFM_SUBTYPE(media); KASSERT(IFM_TYPE(media) == IFM_ETHER, ("invalid media type")); KASSERT((media & IFM_FDX) != 0, ("aggregating HDX interface")); /* bit 0..4: IFM_SUBTYPE modulo speed */ switch (subtype) { case IFM_10_T: case IFM_10_2: case IFM_10_5: case IFM_10_STP: case IFM_10_FL: key = IFM_10_T; break; case IFM_100_TX: case IFM_100_FX: case IFM_100_T4: case IFM_100_VG: case IFM_100_T2: key = IFM_100_TX; break; case IFM_1000_SX: case IFM_1000_LX: case IFM_1000_CX: case IFM_1000_T: key = IFM_1000_SX; break; case IFM_10G_LR: case IFM_10G_SR: case IFM_10G_CX4: case IFM_10G_TWINAX: case IFM_10G_TWINAX_LONG: case IFM_10G_LRM: case IFM_10G_T: key = IFM_10G_LR; break; case IFM_40G_CR4: case IFM_40G_SR4: case IFM_40G_LR4: key = IFM_40G_CR4; break; default: key = subtype; } /* bit 5..14: (some bits of) if_index of lagg device */ key |= 0x7fe0 & ((sc->sc_ifp->if_index) << 5); /* bit 15: 0 */ } return (htons(key)); } static void lacp_aggregator_addref(struct lacp_softc *lsc, struct lacp_aggregator *la) { char buf[LACP_LAGIDSTR_MAX+1]; LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", __func__, lacp_format_lagid(&la->la_actor, &la->la_partner, buf, sizeof(buf)), la->la_refcnt, la->la_refcnt + 1)); KASSERT(la->la_refcnt > 0, ("refcount <= 0")); la->la_refcnt++; KASSERT(la->la_refcnt > la->la_nports, ("invalid refcount")); } static void lacp_aggregator_delref(struct lacp_softc *lsc, struct lacp_aggregator *la) { char buf[LACP_LAGIDSTR_MAX+1]; LACP_DPRINTF((NULL, "%s: lagid=%s, refcnt %d -> %d\n", __func__, lacp_format_lagid(&la->la_actor, &la->la_partner, buf, sizeof(buf)), la->la_refcnt, la->la_refcnt - 1)); KASSERT(la->la_refcnt > la->la_nports, ("invalid refcnt")); la->la_refcnt--; if (la->la_refcnt > 0) { return; } KASSERT(la->la_refcnt == 0, ("refcount not zero")); KASSERT(lsc->lsc_active_aggregator != la, ("aggregator active")); TAILQ_REMOVE(&lsc->lsc_aggregators, la, la_q); free(la, M_DEVBUF); } /* * lacp_aggregator_get: allocate an aggregator. */ static struct lacp_aggregator * lacp_aggregator_get(struct lacp_softc *lsc, struct lacp_port *lp) { struct lacp_aggregator *la; la = malloc(sizeof(*la), M_DEVBUF, M_NOWAIT); if (la) { la->la_refcnt = 1; la->la_nports = 0; TAILQ_INIT(&la->la_ports); la->la_pending = 0; TAILQ_INSERT_TAIL(&lsc->lsc_aggregators, la, la_q); } return (la); } /* * lacp_fill_aggregator_id: setup a newly allocated aggregator from a port. */ static void lacp_fill_aggregator_id(struct lacp_aggregator *la, const struct lacp_port *lp) { lacp_fill_aggregator_id_peer(&la->la_partner, &lp->lp_partner); lacp_fill_aggregator_id_peer(&la->la_actor, &lp->lp_actor); la->la_actor.lip_state = lp->lp_state & LACP_STATE_AGGREGATION; } static void lacp_fill_aggregator_id_peer(struct lacp_peerinfo *lpi_aggr, const struct lacp_peerinfo *lpi_port) { memset(lpi_aggr, 0, sizeof(*lpi_aggr)); lpi_aggr->lip_systemid = lpi_port->lip_systemid; lpi_aggr->lip_key = lpi_port->lip_key; } /* * lacp_aggregator_is_compatible: check if a port can join to an aggregator. */ static int lacp_aggregator_is_compatible(const struct lacp_aggregator *la, const struct lacp_port *lp) { if (!(lp->lp_state & LACP_STATE_AGGREGATION) || !(lp->lp_partner.lip_state & LACP_STATE_AGGREGATION)) { return (0); } if (!(la->la_actor.lip_state & LACP_STATE_AGGREGATION)) { return (0); } if (!lacp_peerinfo_is_compatible(&la->la_partner, &lp->lp_partner)) { return (0); } if (!lacp_peerinfo_is_compatible(&la->la_actor, &lp->lp_actor)) { return (0); } return (1); } static int lacp_peerinfo_is_compatible(const struct lacp_peerinfo *a, const struct lacp_peerinfo *b) { if (memcmp(&a->lip_systemid, &b->lip_systemid, sizeof(a->lip_systemid))) { return (0); } if (memcmp(&a->lip_key, &b->lip_key, sizeof(a->lip_key))) { return (0); } return (1); } static void lacp_port_enable(struct lacp_port *lp) { lp->lp_state |= LACP_STATE_AGGREGATION; } static void lacp_port_disable(struct lacp_port *lp) { lacp_set_mux(lp, LACP_MUX_DETACHED); lp->lp_state &= ~LACP_STATE_AGGREGATION; lp->lp_selected = LACP_UNSELECTED; lacp_sm_rx_record_default(lp); lp->lp_partner.lip_state &= ~LACP_STATE_AGGREGATION; lp->lp_state &= ~LACP_STATE_EXPIRED; } /* * lacp_select: select an aggregator. create one if necessary. */ static void lacp_select(struct lacp_port *lp) { struct lacp_softc *lsc = lp->lp_lsc; struct lacp_aggregator *la; char buf[LACP_LAGIDSTR_MAX+1]; if (lp->lp_aggregator) { return; } KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), ("timer_wait_while still active")); LACP_DPRINTF((lp, "port lagid=%s\n", lacp_format_lagid(&lp->lp_actor, &lp->lp_partner, buf, sizeof(buf)))); TAILQ_FOREACH(la, &lsc->lsc_aggregators, la_q) { if (lacp_aggregator_is_compatible(la, lp)) { break; } } if (la == NULL) { la = lacp_aggregator_get(lsc, lp); if (la == NULL) { LACP_DPRINTF((lp, "aggregator creation failed\n")); /* * will retry on the next tick. */ return; } lacp_fill_aggregator_id(la, lp); LACP_DPRINTF((lp, "aggregator created\n")); } else { LACP_DPRINTF((lp, "compatible aggregator found\n")); if (la->la_refcnt == LACP_MAX_PORTS) return; lacp_aggregator_addref(lsc, la); } LACP_DPRINTF((lp, "aggregator lagid=%s\n", lacp_format_lagid(&la->la_actor, &la->la_partner, buf, sizeof(buf)))); lp->lp_aggregator = la; lp->lp_selected = LACP_SELECTED; } /* * lacp_unselect: finish unselect/detach process. */ static void lacp_unselect(struct lacp_port *lp) { struct lacp_softc *lsc = lp->lp_lsc; struct lacp_aggregator *la = lp->lp_aggregator; KASSERT(!LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), ("timer_wait_while still active")); if (la == NULL) { return; } lp->lp_aggregator = NULL; lacp_aggregator_delref(lsc, la); } /* mux machine */ static void lacp_sm_mux(struct lacp_port *lp) { struct lagg_port *lgp = lp->lp_lagg; struct lagg_softc *sc = lgp->lp_softc; enum lacp_mux_state new_state; boolean_t p_sync = (lp->lp_partner.lip_state & LACP_STATE_SYNC) != 0; boolean_t p_collecting = (lp->lp_partner.lip_state & LACP_STATE_COLLECTING) != 0; enum lacp_selected selected = lp->lp_selected; struct lacp_aggregator *la; if (lacp_debug > 1) lacp_dprintf(lp, "%s: state= 0x%x, selected= 0x%x, " "p_sync= 0x%x, p_collecting= 0x%x\n", __func__, lp->lp_mux_state, selected, p_sync, p_collecting); re_eval: la = lp->lp_aggregator; KASSERT(lp->lp_mux_state == LACP_MUX_DETACHED || la != NULL, ("MUX not detached")); new_state = lp->lp_mux_state; switch (lp->lp_mux_state) { case LACP_MUX_DETACHED: if (selected != LACP_UNSELECTED) { new_state = LACP_MUX_WAITING; } break; case LACP_MUX_WAITING: KASSERT(la->la_pending > 0 || !LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE), ("timer_wait_while still active")); if (selected == LACP_SELECTED && la->la_pending == 0) { new_state = LACP_MUX_ATTACHED; } else if (selected == LACP_UNSELECTED) { new_state = LACP_MUX_DETACHED; } break; case LACP_MUX_ATTACHED: if (selected == LACP_SELECTED && p_sync) { new_state = LACP_MUX_COLLECTING; } else if (selected != LACP_SELECTED) { new_state = LACP_MUX_DETACHED; } break; case LACP_MUX_COLLECTING: if (selected == LACP_SELECTED && p_sync && p_collecting) { new_state = LACP_MUX_DISTRIBUTING; } else if (selected != LACP_SELECTED || !p_sync) { new_state = LACP_MUX_ATTACHED; } break; case LACP_MUX_DISTRIBUTING: if (selected != LACP_SELECTED || !p_sync || !p_collecting) { new_state = LACP_MUX_COLLECTING; lacp_dprintf(lp, "Interface stopped DISTRIBUTING, possible flapping\n"); sc->sc_flapping++; } break; default: panic("%s: unknown state", __func__); } if (lp->lp_mux_state == new_state) { return; } lacp_set_mux(lp, new_state); goto re_eval; } static void lacp_set_mux(struct lacp_port *lp, enum lacp_mux_state new_state) { struct lacp_aggregator *la = lp->lp_aggregator; if (lp->lp_mux_state == new_state) { return; } switch (new_state) { case LACP_MUX_DETACHED: lp->lp_state &= ~LACP_STATE_SYNC; lacp_disable_distributing(lp); lacp_disable_collecting(lp); lacp_sm_assert_ntt(lp); /* cancel timer */ if (LACP_TIMER_ISARMED(lp, LACP_TIMER_WAIT_WHILE)) { KASSERT(la->la_pending > 0, ("timer_wait_while not active")); la->la_pending--; } LACP_TIMER_DISARM(lp, LACP_TIMER_WAIT_WHILE); lacp_unselect(lp); break; case LACP_MUX_WAITING: LACP_TIMER_ARM(lp, LACP_TIMER_WAIT_WHILE, LACP_AGGREGATE_WAIT_TIME); la->la_pending++; break; case LACP_MUX_ATTACHED: lp->lp_state |= LACP_STATE_SYNC; lacp_disable_collecting(lp); lacp_sm_assert_ntt(lp); break; case LACP_MUX_COLLECTING: lacp_enable_collecting(lp); lacp_disable_distributing(lp); lacp_sm_assert_ntt(lp); break; case LACP_MUX_DISTRIBUTING: lacp_enable_distributing(lp); break; default: panic("%s: unknown state", __func__); } LACP_DPRINTF((lp, "mux_state %d -> %d\n", lp->lp_mux_state, new_state)); lp->lp_mux_state = new_state; } static void lacp_sm_mux_timer(struct lacp_port *lp) { struct lacp_aggregator *la = lp->lp_aggregator; char buf[LACP_LAGIDSTR_MAX+1]; KASSERT(la->la_pending > 0, ("no pending event")); LACP_DPRINTF((lp, "%s: aggregator %s, pending %d -> %d\n", __func__, lacp_format_lagid(&la->la_actor, &la->la_partner, buf, sizeof(buf)), la->la_pending, la->la_pending - 1)); la->la_pending--; } /* periodic transmit machine */ static void lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate) { if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state, LACP_STATE_TIMEOUT)) { return; } LACP_DPRINTF((lp, "partner timeout changed\n")); /* * FAST_PERIODIC -> SLOW_PERIODIC * or * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC * * let lacp_sm_ptx_tx_schedule to update timeout. */ LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); /* * if timeout has been shortened, assert NTT. */ if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) { lacp_sm_assert_ntt(lp); } } static void lacp_sm_ptx_tx_schedule(struct lacp_port *lp) { int timeout; if (!(lp->lp_state & LACP_STATE_ACTIVITY) && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) { /* * NO_PERIODIC */ LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC); return; } if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) { return; } timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ? LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME; LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout); } static void lacp_sm_ptx_timer(struct lacp_port *lp) { lacp_sm_assert_ntt(lp); } static void lacp_sm_rx(struct lacp_port *lp, const struct lacpdu *du) { int timeout; /* * check LACP_DISABLED first */ if (!(lp->lp_state & LACP_STATE_AGGREGATION)) { return; } /* * check loopback condition. */ if (!lacp_compare_systemid(&du->ldu_actor.lip_systemid, &lp->lp_actor.lip_systemid)) { return; } /* * EXPIRED, DEFAULTED, CURRENT -> CURRENT */ lacp_sm_rx_update_selected(lp, du); lacp_sm_rx_update_ntt(lp, du); lacp_sm_rx_record_pdu(lp, du); timeout = (lp->lp_state & LACP_STATE_TIMEOUT) ? LACP_SHORT_TIMEOUT_TIME : LACP_LONG_TIMEOUT_TIME; LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, timeout); lp->lp_state &= ~LACP_STATE_EXPIRED; /* * kick transmit machine without waiting the next tick. */ lacp_sm_tx(lp); } static void lacp_sm_rx_set_expired(struct lacp_port *lp) { lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; lp->lp_partner.lip_state |= LACP_STATE_TIMEOUT; LACP_TIMER_ARM(lp, LACP_TIMER_CURRENT_WHILE, LACP_SHORT_TIMEOUT_TIME); lp->lp_state |= LACP_STATE_EXPIRED; } static void lacp_sm_rx_timer(struct lacp_port *lp) { if ((lp->lp_state & LACP_STATE_EXPIRED) == 0) { /* CURRENT -> EXPIRED */ LACP_DPRINTF((lp, "%s: CURRENT -> EXPIRED\n", __func__)); lacp_sm_rx_set_expired(lp); } else { /* EXPIRED -> DEFAULTED */ LACP_DPRINTF((lp, "%s: EXPIRED -> DEFAULTED\n", __func__)); lacp_sm_rx_update_default_selected(lp); lacp_sm_rx_record_default(lp); lp->lp_state &= ~LACP_STATE_EXPIRED; } } static void lacp_sm_rx_record_pdu(struct lacp_port *lp, const struct lacpdu *du) { boolean_t active; uint8_t oldpstate; char buf[LACP_STATESTR_MAX+1]; LACP_TRACE(lp); oldpstate = lp->lp_partner.lip_state; active = (du->ldu_actor.lip_state & LACP_STATE_ACTIVITY) || ((lp->lp_state & LACP_STATE_ACTIVITY) && (du->ldu_partner.lip_state & LACP_STATE_ACTIVITY)); lp->lp_partner = du->ldu_actor; if (active && ((LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, LACP_STATE_AGGREGATION) && !lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner)) || (du->ldu_partner.lip_state & LACP_STATE_AGGREGATION) == 0)) { /* XXX nothing? */ } else { lp->lp_partner.lip_state &= ~LACP_STATE_SYNC; } lp->lp_state &= ~LACP_STATE_DEFAULTED; if (oldpstate != lp->lp_partner.lip_state) { LACP_DPRINTF((lp, "old pstate %s\n", lacp_format_state(oldpstate, buf, sizeof(buf)))); LACP_DPRINTF((lp, "new pstate %s\n", lacp_format_state(lp->lp_partner.lip_state, buf, sizeof(buf)))); } /* XXX Hack, still need to implement 5.4.9 para 2,3,4 */ if (lp->lp_lsc->lsc_strict_mode) lp->lp_partner.lip_state |= LACP_STATE_SYNC; lacp_sm_ptx_update_timeout(lp, oldpstate); } static void lacp_sm_rx_update_ntt(struct lacp_port *lp, const struct lacpdu *du) { LACP_TRACE(lp); if (lacp_compare_peerinfo(&lp->lp_actor, &du->ldu_partner) || !LACP_STATE_EQ(lp->lp_state, du->ldu_partner.lip_state, LACP_STATE_ACTIVITY | LACP_STATE_SYNC | LACP_STATE_AGGREGATION)) { LACP_DPRINTF((lp, "%s: assert ntt\n", __func__)); lacp_sm_assert_ntt(lp); } } static void lacp_sm_rx_record_default(struct lacp_port *lp) { uint8_t oldpstate; LACP_TRACE(lp); oldpstate = lp->lp_partner.lip_state; if (lp->lp_lsc->lsc_strict_mode) lp->lp_partner = lacp_partner_admin_strict; else lp->lp_partner = lacp_partner_admin_optimistic;; lp->lp_state |= LACP_STATE_DEFAULTED; lacp_sm_ptx_update_timeout(lp, oldpstate); } static void lacp_sm_rx_update_selected_from_peerinfo(struct lacp_port *lp, const struct lacp_peerinfo *info) { LACP_TRACE(lp); if (lacp_compare_peerinfo(&lp->lp_partner, info) || !LACP_STATE_EQ(lp->lp_partner.lip_state, info->lip_state, LACP_STATE_AGGREGATION)) { lp->lp_selected = LACP_UNSELECTED; /* mux machine will clean up lp->lp_aggregator */ } } static void lacp_sm_rx_update_selected(struct lacp_port *lp, const struct lacpdu *du) { LACP_TRACE(lp); lacp_sm_rx_update_selected_from_peerinfo(lp, &du->ldu_actor); } static void lacp_sm_rx_update_default_selected(struct lacp_port *lp) { LACP_TRACE(lp); if (lp->lp_lsc->lsc_strict_mode) lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin_strict); else lacp_sm_rx_update_selected_from_peerinfo(lp, &lacp_partner_admin_optimistic); } /* transmit machine */ static void lacp_sm_tx(struct lacp_port *lp) { int error = 0; if (!(lp->lp_state & LACP_STATE_AGGREGATION) #if 1 || (!(lp->lp_state & LACP_STATE_ACTIVITY) && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) #endif ) { lp->lp_flags &= ~LACP_PORT_NTT; } if (!(lp->lp_flags & LACP_PORT_NTT)) { return; } /* Rate limit to 3 PDUs per LACP_FAST_PERIODIC_TIME */ if (ppsratecheck(&lp->lp_last_lacpdu, &lp->lp_lacpdu_sent, (3 / LACP_FAST_PERIODIC_TIME)) == 0) { LACP_DPRINTF((lp, "rate limited pdu\n")); return; } if (((1 << lp->lp_ifp->if_dunit) & lp->lp_lsc->lsc_debug.lsc_tx_test) == 0) { error = lacp_xmit_lacpdu(lp); } else { LACP_TPRINTF((lp, "Dropping TX PDU\n")); } if (error == 0) { lp->lp_flags &= ~LACP_PORT_NTT; } else { LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n", error)); } } static void lacp_sm_assert_ntt(struct lacp_port *lp) { lp->lp_flags |= LACP_PORT_NTT; } static void lacp_run_timers(struct lacp_port *lp) { int i; for (i = 0; i < LACP_NTIMER; i++) { KASSERT(lp->lp_timer[i] >= 0, ("invalid timer value %d", lp->lp_timer[i])); if (lp->lp_timer[i] == 0) { continue; } else if (--lp->lp_timer[i] <= 0) { if (lacp_timer_funcs[i]) { (*lacp_timer_funcs[i])(lp); } } } } int lacp_marker_input(struct lacp_port *lp, struct mbuf *m) { struct lacp_softc *lsc = lp->lp_lsc; struct lagg_port *lgp = lp->lp_lagg; struct lacp_port *lp2; struct markerdu *mdu; int error = 0; int pending = 0; if (m->m_pkthdr.len != sizeof(*mdu)) { goto bad; } if ((m->m_flags & M_MCAST) == 0) { goto bad; } if (m->m_len < sizeof(*mdu)) { m = m_pullup(m, sizeof(*mdu)); if (m == NULL) { return (ENOMEM); } } mdu = mtod(m, struct markerdu *); if (memcmp(&mdu->mdu_eh.ether_dhost, ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN)) { goto bad; } if (mdu->mdu_sph.sph_version != 1) { goto bad; } switch (mdu->mdu_tlv.tlv_type) { case MARKER_TYPE_INFO: if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, marker_info_tlv_template, TRUE)) { goto bad; } mdu->mdu_tlv.tlv_type = MARKER_TYPE_RESPONSE; memcpy(&mdu->mdu_eh.ether_dhost, ðermulticastaddr_slowprotocols, ETHER_ADDR_LEN); memcpy(&mdu->mdu_eh.ether_shost, lgp->lp_lladdr, ETHER_ADDR_LEN); error = lagg_enqueue(lp->lp_ifp, m); break; case MARKER_TYPE_RESPONSE: if (tlv_check(mdu, sizeof(*mdu), &mdu->mdu_tlv, marker_response_tlv_template, TRUE)) { goto bad; } LACP_DPRINTF((lp, "marker response, port=%u, sys=%6D, id=%u\n", ntohs(mdu->mdu_info.mi_rq_port), mdu->mdu_info.mi_rq_system, ":", ntohl(mdu->mdu_info.mi_rq_xid))); /* Verify that it is the last marker we sent out */ if (memcmp(&mdu->mdu_info, &lp->lp_marker, sizeof(struct lacp_markerinfo))) goto bad; LACP_LOCK(lsc); lp->lp_flags &= ~LACP_PORT_MARK; if (lsc->lsc_suppress_distributing) { /* Check if any ports are waiting for a response */ LIST_FOREACH(lp2, &lsc->lsc_ports, lp_next) { if (lp2->lp_flags & LACP_PORT_MARK) { pending = 1; break; } } if (pending == 0) { /* All interface queues are clear */ LACP_DPRINTF((NULL, "queue flush complete\n")); lsc->lsc_suppress_distributing = FALSE; } } LACP_UNLOCK(lsc); m_freem(m); break; default: goto bad; } return (error); bad: LACP_DPRINTF((lp, "bad marker frame\n")); m_freem(m); return (EINVAL); } static int tlv_check(const void *p, size_t size, const struct tlvhdr *tlv, const struct tlv_template *tmpl, boolean_t check_type) { while (/* CONSTCOND */ 1) { if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) { return (EINVAL); } if ((check_type && tlv->tlv_type != tmpl->tmpl_type) || tlv->tlv_length != tmpl->tmpl_length) { return (EINVAL); } if (tmpl->tmpl_type == 0) { break; } tlv = (const struct tlvhdr *) ((const char *)tlv + tlv->tlv_length); tmpl++; } return (0); } /* Debugging */ const char * lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen) { snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X", (int)mac[0], (int)mac[1], (int)mac[2], (int)mac[3], (int)mac[4], (int)mac[5]); return (buf); } const char * lacp_format_systemid(const struct lacp_systemid *sysid, char *buf, size_t buflen) { char macbuf[LACP_MACSTR_MAX+1]; snprintf(buf, buflen, "%04X,%s", ntohs(sysid->lsi_prio), lacp_format_mac(sysid->lsi_mac, macbuf, sizeof(macbuf))); return (buf); } const char * lacp_format_portid(const struct lacp_portid *portid, char *buf, size_t buflen) { snprintf(buf, buflen, "%04X,%04X", ntohs(portid->lpi_prio), ntohs(portid->lpi_portno)); return (buf); } const char * lacp_format_partner(const struct lacp_peerinfo *peer, char *buf, size_t buflen) { char sysid[LACP_SYSTEMIDSTR_MAX+1]; char portid[LACP_PORTIDSTR_MAX+1]; snprintf(buf, buflen, "(%s,%04X,%s)", lacp_format_systemid(&peer->lip_systemid, sysid, sizeof(sysid)), ntohs(peer->lip_key), lacp_format_portid(&peer->lip_portid, portid, sizeof(portid))); return (buf); } const char * lacp_format_lagid(const struct lacp_peerinfo *a, const struct lacp_peerinfo *b, char *buf, size_t buflen) { char astr[LACP_PARTNERSTR_MAX+1]; char bstr[LACP_PARTNERSTR_MAX+1]; #if 0 /* * there's a convention to display small numbered peer * in the left. */ if (lacp_compare_peerinfo(a, b) > 0) { const struct lacp_peerinfo *t; t = a; a = b; b = t; } #endif snprintf(buf, buflen, "[%s,%s]", lacp_format_partner(a, astr, sizeof(astr)), lacp_format_partner(b, bstr, sizeof(bstr))); return (buf); } const char * lacp_format_lagid_aggregator(const struct lacp_aggregator *la, char *buf, size_t buflen) { if (la == NULL) { return ("(none)"); } return (lacp_format_lagid(&la->la_actor, &la->la_partner, buf, buflen)); } const char * lacp_format_state(uint8_t state, char *buf, size_t buflen) { snprintf(buf, buflen, "%b", state, LACP_STATE_BITS); return (buf); } static void lacp_dump_lacpdu(const struct lacpdu *du) { char buf[LACP_PARTNERSTR_MAX+1]; char buf2[LACP_STATESTR_MAX+1]; printf("actor=%s\n", lacp_format_partner(&du->ldu_actor, buf, sizeof(buf))); printf("actor.state=%s\n", lacp_format_state(du->ldu_actor.lip_state, buf2, sizeof(buf2))); printf("partner=%s\n", lacp_format_partner(&du->ldu_partner, buf, sizeof(buf))); printf("partner.state=%s\n", lacp_format_state(du->ldu_partner.lip_state, buf2, sizeof(buf2))); printf("maxdelay=%d\n", ntohs(du->ldu_collector.lci_maxdelay)); } static void lacp_dprintf(const struct lacp_port *lp, const char *fmt, ...) { va_list va; if (lp) { printf("%s: ", lp->lp_ifp->if_xname); } va_start(va, fmt); vprintf(fmt, va); va_end(va); } Index: head/sys/net/ieee8023ad_lacp.h =================================================================== --- head/sys/net/ieee8023ad_lacp.h (revision 272174) +++ head/sys/net/ieee8023ad_lacp.h (revision 272175) @@ -1,338 +1,338 @@ /* $NetBSD: ieee8023ad_impl.h,v 1.2 2005/12/10 23:21:39 elad Exp $ */ /*- * Copyright (c)2005 YAMAMOTO Takashi, * 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 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. * * $FreeBSD$ */ /* * IEEE802.3ad LACP * * implementation details. */ #define LACP_TIMER_CURRENT_WHILE 0 #define LACP_TIMER_PERIODIC 1 #define LACP_TIMER_WAIT_WHILE 2 #define LACP_NTIMER 3 #define LACP_TIMER_ARM(port, timer, val) \ (port)->lp_timer[(timer)] = (val) #define LACP_TIMER_DISARM(port, timer) \ (port)->lp_timer[(timer)] = 0 #define LACP_TIMER_ISARMED(port, timer) \ ((port)->lp_timer[(timer)] > 0) /* * IEEE802.3ad LACP * * protocol definitions. */ #define LACP_STATE_ACTIVITY (1<<0) #define LACP_STATE_TIMEOUT (1<<1) #define LACP_STATE_AGGREGATION (1<<2) #define LACP_STATE_SYNC (1<<3) #define LACP_STATE_COLLECTING (1<<4) #define LACP_STATE_DISTRIBUTING (1<<5) #define LACP_STATE_DEFAULTED (1<<6) #define LACP_STATE_EXPIRED (1<<7) #define LACP_PORT_NTT 0x00000001 #define LACP_PORT_MARK 0x00000002 #define LACP_STATE_BITS \ "\020" \ "\001ACTIVITY" \ "\002TIMEOUT" \ "\003AGGREGATION" \ "\004SYNC" \ "\005COLLECTING" \ "\006DISTRIBUTING" \ "\007DEFAULTED" \ "\010EXPIRED" /* * IEEE802.3 slow protocols * * protocol (on-wire) definitions. * * XXX should be elsewhere. */ #define SLOWPROTOCOLS_SUBTYPE_LACP 1 #define SLOWPROTOCOLS_SUBTYPE_MARKER 2 struct slowprothdr { uint8_t sph_subtype; uint8_t sph_version; } __packed; /* * TLV on-wire structure. */ struct tlvhdr { uint8_t tlv_type; uint8_t tlv_length; /* uint8_t tlv_value[]; */ } __packed; /* * ... and our implementation. */ #define TLV_SET(tlv, type, length) \ do { \ (tlv)->tlv_type = (type); \ (tlv)->tlv_length = sizeof(*tlv) + (length); \ } while (/*CONSTCOND*/0) struct tlv_template { uint8_t tmpl_type; uint8_t tmpl_length; }; struct lacp_systemid { uint16_t lsi_prio; uint8_t lsi_mac[6]; } __packed; struct lacp_portid { uint16_t lpi_prio; uint16_t lpi_portno; } __packed; struct lacp_peerinfo { struct lacp_systemid lip_systemid; uint16_t lip_key; struct lacp_portid lip_portid; uint8_t lip_state; uint8_t lip_resv[3]; } __packed; struct lacp_collectorinfo { uint16_t lci_maxdelay; uint8_t lci_resv[12]; } __packed; struct lacpdu { struct ether_header ldu_eh; struct slowprothdr ldu_sph; struct tlvhdr ldu_tlv_actor; struct lacp_peerinfo ldu_actor; struct tlvhdr ldu_tlv_partner; struct lacp_peerinfo ldu_partner; struct tlvhdr ldu_tlv_collector; struct lacp_collectorinfo ldu_collector; struct tlvhdr ldu_tlv_term; uint8_t ldu_resv[50]; } __packed; /* * IEEE802.3ad marker protocol * * protocol (on-wire) definitions. */ struct lacp_markerinfo { uint16_t mi_rq_port; uint8_t mi_rq_system[ETHER_ADDR_LEN]; uint32_t mi_rq_xid; uint8_t mi_pad[2]; } __packed; struct markerdu { struct ether_header mdu_eh; struct slowprothdr mdu_sph; struct tlvhdr mdu_tlv; struct lacp_markerinfo mdu_info; struct tlvhdr mdu_tlv_term; uint8_t mdu_resv[90]; } __packed; #define MARKER_TYPE_INFO 0x01 #define MARKER_TYPE_RESPONSE 0x02 enum lacp_selected { LACP_UNSELECTED, LACP_STANDBY, /* not used in this implementation */ LACP_SELECTED, }; enum lacp_mux_state { LACP_MUX_DETACHED, LACP_MUX_WAITING, LACP_MUX_ATTACHED, LACP_MUX_COLLECTING, LACP_MUX_DISTRIBUTING, }; #define LACP_MAX_PORTS 32 struct lacp_portmap { int pm_count; struct lacp_port *pm_map[LACP_MAX_PORTS]; }; struct lacp_port { TAILQ_ENTRY(lacp_port) lp_dist_q; LIST_ENTRY(lacp_port) lp_next; struct lacp_softc *lp_lsc; struct lagg_port *lp_lagg; struct ifnet *lp_ifp; struct lacp_peerinfo lp_partner; struct lacp_peerinfo lp_actor; struct lacp_markerinfo lp_marker; #define lp_state lp_actor.lip_state #define lp_key lp_actor.lip_key #define lp_systemid lp_actor.lip_systemid struct timeval lp_last_lacpdu; int lp_lacpdu_sent; enum lacp_mux_state lp_mux_state; enum lacp_selected lp_selected; int lp_flags; u_int lp_media; /* XXX redundant */ int lp_timer[LACP_NTIMER]; struct ifmultiaddr *lp_ifma; struct lacp_aggregator *lp_aggregator; }; struct lacp_aggregator { TAILQ_ENTRY(lacp_aggregator) la_q; int la_refcnt; /* num of ports which selected us */ int la_nports; /* num of distributing ports */ TAILQ_HEAD(, lacp_port) la_ports; /* distributing ports */ struct lacp_peerinfo la_partner; struct lacp_peerinfo la_actor; int la_pending; /* number of ports in wait_while */ }; struct lacp_softc { struct lagg_softc *lsc_softc; struct mtx lsc_mtx; struct lacp_aggregator *lsc_active_aggregator; TAILQ_HEAD(, lacp_aggregator) lsc_aggregators; boolean_t lsc_suppress_distributing; struct callout lsc_transit_callout; struct callout lsc_callout; LIST_HEAD(, lacp_port) lsc_ports; struct lacp_portmap lsc_pmap[2]; volatile u_int lsc_activemap; u_int32_t lsc_hashkey; struct { u_int32_t lsc_rx_test; u_int32_t lsc_tx_test; } lsc_debug; u_int32_t lsc_strict_mode; }; #define LACP_TYPE_ACTORINFO 1 #define LACP_TYPE_PARTNERINFO 2 #define LACP_TYPE_COLLECTORINFO 3 /* timeout values (in sec) */ #define LACP_FAST_PERIODIC_TIME (1) #define LACP_SLOW_PERIODIC_TIME (30) #define LACP_SHORT_TIMEOUT_TIME (3 * LACP_FAST_PERIODIC_TIME) #define LACP_LONG_TIMEOUT_TIME (3 * LACP_SLOW_PERIODIC_TIME) #define LACP_CHURN_DETECTION_TIME (60) #define LACP_AGGREGATE_WAIT_TIME (2) #define LACP_TRANSIT_DELAY 3000 /* in msec */ #define LACP_STATE_EQ(s1, s2, mask) \ ((((s1) ^ (s2)) & (mask)) == 0) #define LACP_SYS_PRI(peer) (peer).lip_systemid.lsi_prio #define LACP_PORT(_lp) ((struct lacp_port *)(_lp)->lp_psc) #define LACP_SOFTC(_sc) ((struct lacp_softc *)(_sc)->sc_psc) #define LACP_LOCK_INIT(_lsc) mtx_init(&(_lsc)->lsc_mtx, \ "lacp mtx", NULL, MTX_DEF) #define LACP_LOCK_DESTROY(_lsc) mtx_destroy(&(_lsc)->lsc_mtx) #define LACP_LOCK(_lsc) mtx_lock(&(_lsc)->lsc_mtx) #define LACP_UNLOCK(_lsc) mtx_unlock(&(_lsc)->lsc_mtx) #define LACP_LOCK_ASSERT(_lsc) mtx_assert(&(_lsc)->lsc_mtx, MA_OWNED) struct mbuf *lacp_input(struct lagg_port *, struct mbuf *); struct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *); void lacp_attach(struct lagg_softc *); void lacp_detach(void *); void lacp_init(struct lagg_softc *); void lacp_stop(struct lagg_softc *); int lacp_port_create(struct lagg_port *); void lacp_port_destroy(struct lagg_port *); void lacp_linkstate(struct lagg_port *); -void lacp_req(struct lagg_softc *, caddr_t); -void lacp_portreq(struct lagg_port *, caddr_t); +void lacp_req(struct lagg_softc *, void *); +void lacp_portreq(struct lagg_port *, void *); static __inline int lacp_isactive(struct lagg_port *lgp) { struct lacp_port *lp = LACP_PORT(lgp); struct lacp_softc *lsc = lp->lp_lsc; struct lacp_aggregator *la = lp->lp_aggregator; /* This port is joined to the active aggregator */ if (la != NULL && la == lsc->lsc_active_aggregator) return (1); return (0); } static __inline int lacp_iscollecting(struct lagg_port *lgp) { struct lacp_port *lp = LACP_PORT(lgp); return ((lp->lp_state & LACP_STATE_COLLECTING) != 0); } static __inline int lacp_isdistributing(struct lagg_port *lgp) { struct lacp_port *lp = LACP_PORT(lgp); return ((lp->lp_state & LACP_STATE_DISTRIBUTING) != 0); } /* following constants don't include terminating NUL */ #define LACP_MACSTR_MAX (2*6 + 5) #define LACP_SYSTEMPRIOSTR_MAX (4) #define LACP_SYSTEMIDSTR_MAX (LACP_SYSTEMPRIOSTR_MAX + 1 + LACP_MACSTR_MAX) #define LACP_PORTPRIOSTR_MAX (4) #define LACP_PORTNOSTR_MAX (4) #define LACP_PORTIDSTR_MAX (LACP_PORTPRIOSTR_MAX + 1 + LACP_PORTNOSTR_MAX) #define LACP_KEYSTR_MAX (4) #define LACP_PARTNERSTR_MAX \ (1 + LACP_SYSTEMIDSTR_MAX + 1 + LACP_KEYSTR_MAX + 1 \ + LACP_PORTIDSTR_MAX + 1) #define LACP_LAGIDSTR_MAX \ (1 + LACP_PARTNERSTR_MAX + 1 + LACP_PARTNERSTR_MAX + 1) #define LACP_STATESTR_MAX (255) /* XXX */ Index: head/sys/net/if_lagg.c =================================================================== --- head/sys/net/if_lagg.c (revision 272174) +++ head/sys/net/if_lagg.c (revision 272175) @@ -1,2069 +1,2067 @@ /* $OpenBSD: if_trunk.c,v 1.30 2007/01/31 06:20:19 reyk Exp $ */ /* * Copyright (c) 2005, 2006 Reyk Floeter * Copyright (c) 2007 Andrew Thompson * Copyright (c) 2014 Marcelo Araujo * * 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 __FBSDID("$FreeBSD$"); #include "opt_inet.h" #include "opt_inet6.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(INET) || defined(INET6) #include #include #endif #ifdef INET #include #include #endif #ifdef INET6 #include #include #include #endif #include #include #include /* Special flags we should propagate to the lagg ports. */ static struct { int flag; int (*func)(struct ifnet *, int); } lagg_pflags[] = { {IFF_PROMISC, ifpromisc}, {IFF_ALLMULTI, if_allmulti}, {0, NULL} }; SLIST_HEAD(__trhead, lagg_softc) lagg_list; /* list of laggs */ static struct mtx lagg_list_mtx; eventhandler_tag lagg_detach_cookie = NULL; static int lagg_clone_create(struct if_clone *, int, caddr_t); static void lagg_clone_destroy(struct ifnet *); static struct if_clone *lagg_cloner; static const char laggname[] = "lagg"; static void lagg_lladdr(struct lagg_softc *, uint8_t *); static void lagg_capabilities(struct lagg_softc *); static void lagg_port_lladdr(struct lagg_port *, uint8_t *); static void lagg_port_setlladdr(void *, int); static int lagg_port_create(struct lagg_softc *, struct ifnet *); static int lagg_port_destroy(struct lagg_port *, int); static struct mbuf *lagg_input(struct ifnet *, struct mbuf *); static void lagg_linkstate(struct lagg_softc *); static void lagg_port_state(struct ifnet *, int); static int lagg_port_ioctl(struct ifnet *, u_long, caddr_t); static int lagg_port_output(struct ifnet *, struct mbuf *, const struct sockaddr *, struct route *); static void lagg_port_ifdetach(void *arg __unused, struct ifnet *); #ifdef LAGG_PORT_STACKING static int lagg_port_checkstacking(struct lagg_softc *); #endif static void lagg_port2req(struct lagg_port *, struct lagg_reqport *); static void lagg_init(void *); static void lagg_stop(struct lagg_softc *); static int lagg_ioctl(struct ifnet *, u_long, caddr_t); static int lagg_ether_setmulti(struct lagg_softc *); static int lagg_ether_cmdmulti(struct lagg_port *, int); static int lagg_setflag(struct lagg_port *, int, int, int (*func)(struct ifnet *, int)); static int lagg_setflags(struct lagg_port *, int status); static int lagg_transmit(struct ifnet *, struct mbuf *); static void lagg_qflush(struct ifnet *); static int lagg_media_change(struct ifnet *); static void lagg_media_status(struct ifnet *, struct ifmediareq *); static struct lagg_port *lagg_link_active(struct lagg_softc *, struct lagg_port *); static const void *lagg_gethdr(struct mbuf *, u_int, u_int, void *); static int lagg_sysctl_active(SYSCTL_HANDLER_ARGS); /* Simple round robin */ static void lagg_rr_attach(struct lagg_softc *); static int lagg_rr_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_rr_input(struct lagg_softc *, struct lagg_port *, struct mbuf *); /* Active failover */ static void lagg_fail_attach(struct lagg_softc *); static int lagg_fail_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_fail_input(struct lagg_softc *, struct lagg_port *, struct mbuf *); /* Loadbalancing */ static void lagg_lb_attach(struct lagg_softc *); static void lagg_lb_detach(struct lagg_softc *); static int lagg_lb_port_create(struct lagg_port *); static void lagg_lb_port_destroy(struct lagg_port *); static int lagg_lb_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_lb_input(struct lagg_softc *, struct lagg_port *, struct mbuf *); static int lagg_lb_porttable(struct lagg_softc *, struct lagg_port *); /* Broadcast */ static void lagg_bcast_attach(struct lagg_softc *); static int lagg_bcast_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *, - struct mbuf *); + struct mbuf *); /* 802.3ad LACP */ static void lagg_lacp_attach(struct lagg_softc *); static void lagg_lacp_detach(struct lagg_softc *); static int lagg_lacp_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_lacp_input(struct lagg_softc *, struct lagg_port *, struct mbuf *); static void lagg_lacp_lladdr(struct lagg_softc *); static void lagg_callout(void *); /* lagg protocol table */ static const struct lagg_proto { lagg_proto pr_num; void (*pr_attach)(struct lagg_softc *); void (*pr_detach)(struct lagg_softc *); } lagg_protos[] = { { .pr_num = LAGG_PROTO_NONE }, { .pr_num = LAGG_PROTO_ROUNDROBIN, .pr_attach = lagg_rr_attach, }, { .pr_num = LAGG_PROTO_FAILOVER, .pr_attach = lagg_fail_attach, }, { .pr_num = LAGG_PROTO_LOADBALANCE, .pr_attach = lagg_lb_attach, .pr_detach = lagg_lb_detach, }, { .pr_num = LAGG_PROTO_LACP, .pr_attach = lagg_lacp_attach, .pr_detach = lagg_lacp_detach, }, { .pr_num = LAGG_PROTO_ETHERCHANNEL, .pr_attach = lagg_lb_attach, }, { .pr_num = LAGG_PROTO_BROADCAST, .pr_attach = lagg_bcast_attach, }, }; SYSCTL_DECL(_net_link); SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW, 0, "Link Aggregation"); static int lagg_failover_rx_all = 0; /* Allow input on any failover links */ SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW, &lagg_failover_rx_all, 0, "Accept input from any interface in a failover lagg"); static int def_use_flowid = 1; /* Default value for using M_FLOWID */ SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN, &def_use_flowid, 0, "Default setting for using flow id for load sharing"); static int def_flowid_shift = 16; /* Default value for using M_FLOWID */ SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN, &def_flowid_shift, 0, "Default setting for flowid shift for load sharing"); static int lagg_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: mtx_init(&lagg_list_mtx, "if_lagg list", NULL, MTX_DEF); SLIST_INIT(&lagg_list); lagg_cloner = if_clone_simple(laggname, lagg_clone_create, lagg_clone_destroy, 0); lagg_input_p = lagg_input; lagg_linkstate_p = lagg_port_state; lagg_detach_cookie = EVENTHANDLER_REGISTER( ifnet_departure_event, lagg_port_ifdetach, NULL, EVENTHANDLER_PRI_ANY); break; case MOD_UNLOAD: EVENTHANDLER_DEREGISTER(ifnet_departure_event, lagg_detach_cookie); if_clone_detach(lagg_cloner); lagg_input_p = NULL; lagg_linkstate_p = NULL; mtx_destroy(&lagg_list_mtx); break; default: return (EOPNOTSUPP); } return (0); } static moduledata_t lagg_mod = { "if_lagg", lagg_modevent, 0 }; DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); MODULE_VERSION(if_lagg, 1); static void lagg_proto_attach(struct lagg_softc *sc, lagg_proto pr) { KASSERT(sc->sc_proto == LAGG_PROTO_NONE, ("%s: sc %p has proto", __func__, sc)); if (sc->sc_ifflags & IFF_DEBUG) if_printf(sc->sc_ifp, "using proto %u\n", pr); lagg_protos[pr].pr_attach(sc); sc->sc_proto = pr; } static void lagg_proto_detach(struct lagg_softc *sc) { lagg_proto pr; LAGG_WLOCK_ASSERT(sc); pr = sc->sc_proto; - sc->sc_proto = LAGG_PROTO_NONE; + sc->sc_proto = LAGG_PROTO_NONE; if (lagg_protos[pr].pr_detach != NULL) lagg_protos[pr].pr_detach(sc); else LAGG_WUNLOCK(sc); } /* * This routine is run via an vlan * config EVENT */ static void lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) { - struct lagg_softc *sc = ifp->if_softc; - struct lagg_port *lp; - struct rm_priotracker tracker; + struct lagg_softc *sc = ifp->if_softc; + struct lagg_port *lp; + struct rm_priotracker tracker; - if (ifp->if_softc != arg) /* Not our event */ - return; + if (ifp->if_softc != arg) /* Not our event */ + return; - LAGG_RLOCK(sc, &tracker); - if (!SLIST_EMPTY(&sc->sc_ports)) { - SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) - EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag); - } - LAGG_RUNLOCK(sc, &tracker); + LAGG_RLOCK(sc, &tracker); + if (!SLIST_EMPTY(&sc->sc_ports)) { + SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) + EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag); + } + LAGG_RUNLOCK(sc, &tracker); } /* * This routine is run via an vlan * unconfig EVENT */ static void lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag) { - struct lagg_softc *sc = ifp->if_softc; - struct lagg_port *lp; - struct rm_priotracker tracker; + struct lagg_softc *sc = ifp->if_softc; + struct lagg_port *lp; + struct rm_priotracker tracker; - if (ifp->if_softc != arg) /* Not our event */ - return; + if (ifp->if_softc != arg) /* Not our event */ + return; - LAGG_RLOCK(sc, &tracker); - if (!SLIST_EMPTY(&sc->sc_ports)) { - SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) - EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag); - } - LAGG_RUNLOCK(sc, &tracker); + LAGG_RLOCK(sc, &tracker); + if (!SLIST_EMPTY(&sc->sc_ports)) { + SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) + EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag); + } + LAGG_RUNLOCK(sc, &tracker); } static int lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params) { struct lagg_softc *sc; struct ifnet *ifp; static const u_char eaddr[6]; /* 00:00:00:00:00:00 */ struct sysctl_oid *oid; char num[14]; /* sufficient for 32 bits */ sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO); ifp = sc->sc_ifp = if_alloc(IFT_ETHER); if (ifp == NULL) { free(sc, M_DEVBUF); return (ENOSPC); } sc->sc_ipackets = counter_u64_alloc(M_WAITOK); sc->sc_opackets = counter_u64_alloc(M_WAITOK); sc->sc_ibytes = counter_u64_alloc(M_WAITOK); sc->sc_obytes = counter_u64_alloc(M_WAITOK); sysctl_ctx_init(&sc->ctx); snprintf(num, sizeof(num), "%u", unit); sc->use_flowid = def_use_flowid; sc->flowid_shift = def_flowid_shift; sc->sc_oid = oid = SYSCTL_ADD_NODE(&sc->ctx, &SYSCTL_NODE_CHILDREN(_net_link, lagg), OID_AUTO, num, CTLFLAG_RD, NULL, ""); SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "use_flowid", CTLTYPE_INT|CTLFLAG_RW, &sc->use_flowid, sc->use_flowid, "Use flow id for load sharing"); SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "flowid_shift", CTLTYPE_INT|CTLFLAG_RW, &sc->flowid_shift, sc->flowid_shift, "Shift flowid bits to prevent multiqueue collisions"); SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "count", CTLTYPE_INT|CTLFLAG_RD, &sc->sc_count, sc->sc_count, "Total number of ports"); SYSCTL_ADD_PROC(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "active", CTLTYPE_INT|CTLFLAG_RD, sc, 0, lagg_sysctl_active, "I", "Total number of active ports"); SYSCTL_ADD_INT(&sc->ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "flapping", CTLTYPE_INT|CTLFLAG_RD, &sc->sc_flapping, sc->sc_flapping, "Total number of port change events"); /* Hash all layers by default */ sc->sc_flags = LAGG_F_HASHL2|LAGG_F_HASHL3|LAGG_F_HASHL4; lagg_proto_attach(sc, LAGG_PROTO_DEFAULT); LAGG_LOCK_INIT(sc); LAGG_CALLOUT_LOCK_INIT(sc); SLIST_INIT(&sc->sc_ports); TASK_INIT(&sc->sc_lladdr_task, 0, lagg_port_setlladdr, sc); /* * This uses the callout lock rather than the rmlock; one can't * hold said rmlock during SWI. */ callout_init_mtx(&sc->sc_callout, &sc->sc_call_mtx, 0); /* Initialise pseudo media types */ ifmedia_init(&sc->sc_media, 0, lagg_media_change, lagg_media_status); ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); if_initname(ifp, laggname, unit); ifp->if_softc = sc; ifp->if_transmit = lagg_transmit; ifp->if_qflush = lagg_qflush; ifp->if_init = lagg_init; ifp->if_ioctl = lagg_ioctl; ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; ifp->if_capenable = ifp->if_capabilities = IFCAP_HWSTATS; /* * Attach as an ordinary ethernet device, children will be attached * as special device IFT_IEEE8023ADLAG. */ ether_ifattach(ifp, eaddr); sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST); sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST); /* Insert into the global list of laggs */ mtx_lock(&lagg_list_mtx); SLIST_INSERT_HEAD(&lagg_list, sc, sc_entries); mtx_unlock(&lagg_list_mtx); callout_reset(&sc->sc_callout, hz, lagg_callout, sc); return (0); } static void lagg_clone_destroy(struct ifnet *ifp) { struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; struct lagg_port *lp; LAGG_WLOCK(sc); lagg_stop(sc); ifp->if_flags &= ~IFF_UP; EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach); EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach); /* Shutdown and remove lagg ports */ while ((lp = SLIST_FIRST(&sc->sc_ports)) != NULL) lagg_port_destroy(lp, 1); /* Unhook the aggregation protocol */ lagg_proto_detach(sc); sysctl_ctx_free(&sc->ctx); ifmedia_removeall(&sc->sc_media); ether_ifdetach(ifp); if_free(ifp); /* This grabs sc_callout_mtx, serialising it correctly */ callout_drain(&sc->sc_callout); /* At this point it's drained; we can free this */ counter_u64_free(sc->sc_ipackets); counter_u64_free(sc->sc_opackets); counter_u64_free(sc->sc_ibytes); counter_u64_free(sc->sc_obytes); mtx_lock(&lagg_list_mtx); SLIST_REMOVE(&lagg_list, sc, lagg_softc, sc_entries); mtx_unlock(&lagg_list_mtx); taskqueue_drain(taskqueue_swi, &sc->sc_lladdr_task); LAGG_LOCK_DESTROY(sc); LAGG_CALLOUT_LOCK_DESTROY(sc); free(sc, M_DEVBUF); } static void lagg_lladdr(struct lagg_softc *sc, uint8_t *lladdr) { struct ifnet *ifp = sc->sc_ifp; if (memcmp(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN) == 0) return; bcopy(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN); /* Let the protocol know the MAC has changed */ if (sc->sc_lladdr != NULL) (*sc->sc_lladdr)(sc); EVENTHANDLER_INVOKE(iflladdr_event, ifp); } static void lagg_capabilities(struct lagg_softc *sc) { struct lagg_port *lp; int cap = ~0, ena = ~0; u_long hwa = ~0UL; struct ifnet_hw_tsomax hw_tsomax; LAGG_WLOCK_ASSERT(sc); memset(&hw_tsomax, 0, sizeof(hw_tsomax)); /* Get capabilities from the lagg ports */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { cap &= lp->lp_ifp->if_capabilities; ena &= lp->lp_ifp->if_capenable; hwa &= lp->lp_ifp->if_hwassist; if_hw_tsomax_common(lp->lp_ifp, &hw_tsomax); } cap = (cap == ~0 ? 0 : cap); ena = (ena == ~0 ? 0 : ena); hwa = (hwa == ~0 ? 0 : hwa); if (sc->sc_ifp->if_capabilities != cap || sc->sc_ifp->if_capenable != ena || sc->sc_ifp->if_hwassist != hwa || if_hw_tsomax_update(sc->sc_ifp, &hw_tsomax) != 0) { sc->sc_ifp->if_capabilities = cap; sc->sc_ifp->if_capenable = ena; sc->sc_ifp->if_hwassist = hwa; getmicrotime(&sc->sc_ifp->if_lastchange); if (sc->sc_ifflags & IFF_DEBUG) if_printf(sc->sc_ifp, "capabilities 0x%08x enabled 0x%08x\n", cap, ena); } } static void lagg_port_lladdr(struct lagg_port *lp, uint8_t *lladdr) { struct lagg_softc *sc = lp->lp_softc; struct ifnet *ifp = lp->lp_ifp; struct lagg_llq *llq; int pending = 0; LAGG_WLOCK_ASSERT(sc); if (lp->lp_detaching || memcmp(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN) == 0) return; /* Check to make sure its not already queued to be changed */ SLIST_FOREACH(llq, &sc->sc_llq_head, llq_entries) { if (llq->llq_ifp == ifp) { pending = 1; break; } } if (!pending) { llq = malloc(sizeof(struct lagg_llq), M_DEVBUF, M_NOWAIT); if (llq == NULL) /* XXX what to do */ return; } /* Update the lladdr even if pending, it may have changed */ llq->llq_ifp = ifp; bcopy(lladdr, llq->llq_lladdr, ETHER_ADDR_LEN); if (!pending) SLIST_INSERT_HEAD(&sc->sc_llq_head, llq, llq_entries); taskqueue_enqueue(taskqueue_swi, &sc->sc_lladdr_task); } /* * Set the interface MAC address from a taskqueue to avoid a LOR. */ static void lagg_port_setlladdr(void *arg, int pending) { struct lagg_softc *sc = (struct lagg_softc *)arg; struct lagg_llq *llq, *head; struct ifnet *ifp; int error; /* Grab a local reference of the queue and remove it from the softc */ LAGG_WLOCK(sc); head = SLIST_FIRST(&sc->sc_llq_head); SLIST_FIRST(&sc->sc_llq_head) = NULL; LAGG_WUNLOCK(sc); /* * Traverse the queue and set the lladdr on each ifp. It is safe to do * unlocked as we have the only reference to it. */ for (llq = head; llq != NULL; llq = head) { ifp = llq->llq_ifp; /* Set the link layer address */ CURVNET_SET(ifp->if_vnet); error = if_setlladdr(ifp, llq->llq_lladdr, ETHER_ADDR_LEN); CURVNET_RESTORE(); if (error) printf("%s: setlladdr failed on %s\n", __func__, ifp->if_xname); head = SLIST_NEXT(llq, llq_entries); free(llq, M_DEVBUF); } } static int lagg_port_create(struct lagg_softc *sc, struct ifnet *ifp) { struct lagg_softc *sc_ptr; struct lagg_port *lp; int error = 0; LAGG_WLOCK_ASSERT(sc); /* Limit the maximal number of lagg ports */ if (sc->sc_count >= LAGG_MAX_PORTS) return (ENOSPC); /* Check if port has already been associated to a lagg */ if (ifp->if_lagg != NULL) { /* Port is already in the current lagg? */ lp = (struct lagg_port *)ifp->if_lagg; if (lp->lp_softc == sc) return (EEXIST); return (EBUSY); } /* XXX Disallow non-ethernet interfaces (this should be any of 802) */ if (ifp->if_type != IFT_ETHER) return (EPROTONOSUPPORT); #ifdef INET6 /* * The member interface should not have inet6 address because * two interfaces with a valid link-local scope zone must not be * merged in any form. This restriction is needed to * prevent violation of link-local scope zone. Attempts to * add a member interface which has inet6 addresses triggers * removal of all inet6 addresses on the member interface. */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (in6ifa_llaonifp(lp->lp_ifp)) { in6_ifdetach(lp->lp_ifp); if_printf(sc->sc_ifp, "IPv6 addresses on %s have been removed " "before adding it as a member to prevent " "IPv6 address scope violation.\n", lp->lp_ifp->if_xname); } } if (in6ifa_llaonifp(ifp)) { in6_ifdetach(ifp); if_printf(sc->sc_ifp, "IPv6 addresses on %s have been removed " "before adding it as a member to prevent " "IPv6 address scope violation.\n", ifp->if_xname); } #endif /* Allow the first Ethernet member to define the MTU */ if (SLIST_EMPTY(&sc->sc_ports)) sc->sc_ifp->if_mtu = ifp->if_mtu; else if (sc->sc_ifp->if_mtu != ifp->if_mtu) { if_printf(sc->sc_ifp, "invalid MTU for %s\n", ifp->if_xname); return (EINVAL); } if ((lp = malloc(sizeof(struct lagg_port), M_DEVBUF, M_NOWAIT|M_ZERO)) == NULL) return (ENOMEM); /* Check if port is a stacked lagg */ mtx_lock(&lagg_list_mtx); SLIST_FOREACH(sc_ptr, &lagg_list, sc_entries) { if (ifp == sc_ptr->sc_ifp) { mtx_unlock(&lagg_list_mtx); free(lp, M_DEVBUF); return (EINVAL); /* XXX disable stacking for the moment, its untested */ #ifdef LAGG_PORT_STACKING lp->lp_flags |= LAGG_PORT_STACK; if (lagg_port_checkstacking(sc_ptr) >= LAGG_MAX_STACKING) { mtx_unlock(&lagg_list_mtx); free(lp, M_DEVBUF); return (E2BIG); } #endif } } mtx_unlock(&lagg_list_mtx); /* Change the interface type */ lp->lp_iftype = ifp->if_type; ifp->if_type = IFT_IEEE8023ADLAG; ifp->if_lagg = lp; lp->lp_ioctl = ifp->if_ioctl; ifp->if_ioctl = lagg_port_ioctl; lp->lp_output = ifp->if_output; ifp->if_output = lagg_port_output; lp->lp_ifp = ifp; lp->lp_softc = sc; /* Save port link layer address */ bcopy(IF_LLADDR(ifp), lp->lp_lladdr, ETHER_ADDR_LEN); if (SLIST_EMPTY(&sc->sc_ports)) { sc->sc_primary = lp; lagg_lladdr(sc, IF_LLADDR(ifp)); } else { /* Update link layer address for this port */ lagg_port_lladdr(lp, IF_LLADDR(sc->sc_ifp)); } /* Insert into the list of ports */ SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries); sc->sc_count++; /* Update lagg capabilities */ lagg_capabilities(sc); lagg_linkstate(sc); /* Add multicast addresses and interface flags to this port */ lagg_ether_cmdmulti(lp, 1); lagg_setflags(lp, 1); if (sc->sc_port_create != NULL) error = (*sc->sc_port_create)(lp); if (error) { /* remove the port again, without calling sc_port_destroy */ lagg_port_destroy(lp, 0); return (error); } return (error); } #ifdef LAGG_PORT_STACKING static int lagg_port_checkstacking(struct lagg_softc *sc) { struct lagg_softc *sc_ptr; struct lagg_port *lp; int m = 0; LAGG_WLOCK_ASSERT(sc); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (lp->lp_flags & LAGG_PORT_STACK) { sc_ptr = (struct lagg_softc *)lp->lp_ifp->if_softc; m = MAX(m, lagg_port_checkstacking(sc_ptr)); } } return (m + 1); } #endif static int lagg_port_destroy(struct lagg_port *lp, int runpd) { struct lagg_softc *sc = lp->lp_softc; struct lagg_port *lp_ptr; struct lagg_llq *llq; struct ifnet *ifp = lp->lp_ifp; LAGG_WLOCK_ASSERT(sc); if (runpd && sc->sc_port_destroy != NULL) (*sc->sc_port_destroy)(lp); /* * Remove multicast addresses and interface flags from this port and * reset the MAC address, skip if the interface is being detached. */ if (!lp->lp_detaching) { lagg_ether_cmdmulti(lp, 0); lagg_setflags(lp, 0); lagg_port_lladdr(lp, lp->lp_lladdr); } /* Restore interface */ ifp->if_type = lp->lp_iftype; ifp->if_ioctl = lp->lp_ioctl; ifp->if_output = lp->lp_output; ifp->if_lagg = NULL; /* Finally, remove the port from the lagg */ SLIST_REMOVE(&sc->sc_ports, lp, lagg_port, lp_entries); sc->sc_count--; /* Update the primary interface */ if (lp == sc->sc_primary) { uint8_t lladdr[ETHER_ADDR_LEN]; if ((lp_ptr = SLIST_FIRST(&sc->sc_ports)) == NULL) { bzero(&lladdr, ETHER_ADDR_LEN); } else { bcopy(lp_ptr->lp_lladdr, lladdr, ETHER_ADDR_LEN); } lagg_lladdr(sc, lladdr); sc->sc_primary = lp_ptr; /* Update link layer address for each port */ SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries) lagg_port_lladdr(lp_ptr, lladdr); } /* Remove any pending lladdr changes from the queue */ if (lp->lp_detaching) { SLIST_FOREACH(llq, &sc->sc_llq_head, llq_entries) { if (llq->llq_ifp == ifp) { SLIST_REMOVE(&sc->sc_llq_head, llq, lagg_llq, llq_entries); free(llq, M_DEVBUF); break; /* Only appears once */ } } } if (lp->lp_ifflags) if_printf(ifp, "%s: lp_ifflags unclean\n", __func__); free(lp, M_DEVBUF); /* Update lagg capabilities */ lagg_capabilities(sc); lagg_linkstate(sc); return (0); } static int lagg_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct lagg_reqport *rp = (struct lagg_reqport *)data; struct lagg_softc *sc; struct lagg_port *lp = NULL; int error = 0; struct rm_priotracker tracker; /* Should be checked by the caller */ if (ifp->if_type != IFT_IEEE8023ADLAG || (lp = ifp->if_lagg) == NULL || (sc = lp->lp_softc) == NULL) goto fallback; switch (cmd) { case SIOCGLAGGPORT: if (rp->rp_portname[0] == '\0' || ifunit(rp->rp_portname) != ifp) { error = EINVAL; break; } LAGG_RLOCK(sc, &tracker); if ((lp = ifp->if_lagg) == NULL || lp->lp_softc != sc) { error = ENOENT; LAGG_RUNLOCK(sc, &tracker); break; } lagg_port2req(lp, rp); LAGG_RUNLOCK(sc, &tracker); break; case SIOCSIFCAP: if (lp->lp_ioctl == NULL) { error = EINVAL; break; } error = (*lp->lp_ioctl)(ifp, cmd, data); if (error) break; /* Update lagg interface capabilities */ LAGG_WLOCK(sc); lagg_capabilities(sc); LAGG_WUNLOCK(sc); break; case SIOCSIFMTU: /* Do not allow the MTU to be changed once joined */ error = EINVAL; break; default: goto fallback; } return (error); fallback: if (lp->lp_ioctl != NULL) return ((*lp->lp_ioctl)(ifp, cmd, data)); return (EINVAL); } /* * For direct output to child ports. */ static int lagg_port_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, struct route *ro) { struct lagg_port *lp = ifp->if_lagg; switch (dst->sa_family) { case pseudo_AF_HDRCMPLT: case AF_UNSPEC: return ((*lp->lp_output)(ifp, m, dst, ro)); } /* drop any other frames */ m_freem(m); return (ENETDOWN); } static void lagg_port_ifdetach(void *arg __unused, struct ifnet *ifp) { struct lagg_port *lp; struct lagg_softc *sc; if ((lp = ifp->if_lagg) == NULL) return; /* If the ifnet is just being renamed, don't do anything. */ if (ifp->if_flags & IFF_RENAMING) return; sc = lp->lp_softc; LAGG_WLOCK(sc); lp->lp_detaching = 1; lagg_port_destroy(lp, 1); LAGG_WUNLOCK(sc); } static void lagg_port2req(struct lagg_port *lp, struct lagg_reqport *rp) { struct lagg_softc *sc = lp->lp_softc; strlcpy(rp->rp_ifname, sc->sc_ifname, sizeof(rp->rp_ifname)); strlcpy(rp->rp_portname, lp->lp_ifp->if_xname, sizeof(rp->rp_portname)); rp->rp_prio = lp->lp_prio; rp->rp_flags = lp->lp_flags; if (sc->sc_portreq != NULL) - (*sc->sc_portreq)(lp, (caddr_t)&rp->rp_psc); + (*sc->sc_portreq)(lp, &rp->rp_psc); /* Add protocol specific flags */ switch (sc->sc_proto) { case LAGG_PROTO_FAILOVER: if (lp == sc->sc_primary) rp->rp_flags |= LAGG_PORT_MASTER; if (lp == lagg_link_active(sc, sc->sc_primary)) rp->rp_flags |= LAGG_PORT_ACTIVE; break; case LAGG_PROTO_ROUNDROBIN: case LAGG_PROTO_LOADBALANCE: case LAGG_PROTO_ETHERCHANNEL: - case LAGG_PROTO_BROADCAST: + case LAGG_PROTO_BROADCAST: if (LAGG_PORTACTIVE(lp)) rp->rp_flags |= LAGG_PORT_ACTIVE; break; case LAGG_PROTO_LACP: /* LACP has a different definition of active */ if (lacp_isactive(lp)) rp->rp_flags |= LAGG_PORT_ACTIVE; if (lacp_iscollecting(lp)) rp->rp_flags |= LAGG_PORT_COLLECTING; if (lacp_isdistributing(lp)) rp->rp_flags |= LAGG_PORT_DISTRIBUTING; break; } } static void lagg_init(void *xsc) { struct lagg_softc *sc = (struct lagg_softc *)xsc; struct lagg_port *lp; struct ifnet *ifp = sc->sc_ifp; if (ifp->if_drv_flags & IFF_DRV_RUNNING) return; LAGG_WLOCK(sc); ifp->if_drv_flags |= IFF_DRV_RUNNING; /* Update the port lladdrs */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lagg_port_lladdr(lp, IF_LLADDR(ifp)); if (sc->sc_init != NULL) (*sc->sc_init)(sc); LAGG_WUNLOCK(sc); } static void lagg_stop(struct lagg_softc *sc) { struct ifnet *ifp = sc->sc_ifp; LAGG_WLOCK_ASSERT(sc); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) return; ifp->if_drv_flags &= ~IFF_DRV_RUNNING; if (sc->sc_stop != NULL) (*sc->sc_stop)(sc); } static int lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; struct lagg_reqall *ra = (struct lagg_reqall *)data; struct lagg_reqport *rp = (struct lagg_reqport *)data, rpbuf; struct lagg_reqflags *rf = (struct lagg_reqflags *)data; struct ifreq *ifr = (struct ifreq *)data; struct lagg_port *lp; struct ifnet *tpif; struct thread *td = curthread; char *buf, *outbuf; int count, buflen, len, error = 0; struct rm_priotracker tracker; bzero(&rpbuf, sizeof(rpbuf)); switch (cmd) { case SIOCGLAGG: LAGG_RLOCK(sc, &tracker); count = 0; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) count++; buflen = count * sizeof(struct lagg_reqport); LAGG_RUNLOCK(sc, &tracker); outbuf = malloc(buflen, M_TEMP, M_WAITOK | M_ZERO); LAGG_RLOCK(sc, &tracker); ra->ra_proto = sc->sc_proto; if (sc->sc_req != NULL) - (*sc->sc_req)(sc, (caddr_t)&ra->ra_psc); + (*sc->sc_req)(sc, &ra->ra_psc); count = 0; buf = outbuf; len = min(ra->ra_size, buflen); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (len < sizeof(rpbuf)) break; lagg_port2req(lp, &rpbuf); memcpy(buf, &rpbuf, sizeof(rpbuf)); count++; buf += sizeof(rpbuf); len -= sizeof(rpbuf); } LAGG_RUNLOCK(sc, &tracker); ra->ra_ports = count; ra->ra_size = count * sizeof(rpbuf); error = copyout(outbuf, ra->ra_port, ra->ra_size); free(outbuf, M_TEMP); break; case SIOCSLAGG: error = priv_check(td, PRIV_NET_LAGG); if (error) break; if (ra->ra_proto < 1 || ra->ra_proto >= LAGG_PROTO_MAX) { error = EPROTONOSUPPORT; break; } LAGG_WLOCK(sc); lagg_proto_detach(sc); lagg_proto_attach(sc, ra->ra_proto); break; case SIOCGLAGGFLAGS: rf->rf_flags = sc->sc_flags; break; case SIOCSLAGGHASH: error = priv_check(td, PRIV_NET_LAGG); if (error) break; if ((rf->rf_flags & LAGG_F_HASHMASK) == 0) { error = EINVAL; break; } LAGG_WLOCK(sc); sc->sc_flags &= ~LAGG_F_HASHMASK; sc->sc_flags |= rf->rf_flags & LAGG_F_HASHMASK; LAGG_WUNLOCK(sc); break; case SIOCGLAGGPORT: if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } LAGG_RLOCK(sc, &tracker); if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || lp->lp_softc != sc) { error = ENOENT; LAGG_RUNLOCK(sc, &tracker); break; } lagg_port2req(lp, rp); LAGG_RUNLOCK(sc, &tracker); break; case SIOCSLAGGPORT: error = priv_check(td, PRIV_NET_LAGG); if (error) break; if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } LAGG_WLOCK(sc); error = lagg_port_create(sc, tpif); LAGG_WUNLOCK(sc); break; case SIOCSLAGGDELPORT: error = priv_check(td, PRIV_NET_LAGG); if (error) break; if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } LAGG_WLOCK(sc); if ((lp = (struct lagg_port *)tpif->if_lagg) == NULL || lp->lp_softc != sc) { error = ENOENT; LAGG_WUNLOCK(sc); break; } error = lagg_port_destroy(lp, 1); LAGG_WUNLOCK(sc); break; case SIOCSIFFLAGS: /* Set flags on ports too */ LAGG_WLOCK(sc); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { lagg_setflags(lp, 1); } LAGG_WUNLOCK(sc); if (!(ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) { /* * If interface is marked down and it is running, * then stop and disable it. */ LAGG_WLOCK(sc); lagg_stop(sc); LAGG_WUNLOCK(sc); } else if ((ifp->if_flags & IFF_UP) && !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { /* * If interface is marked up and it is stopped, then * start it. */ (*ifp->if_init)(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: LAGG_WLOCK(sc); error = lagg_ether_setmulti(sc); LAGG_WUNLOCK(sc); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); break; case SIOCSIFCAP: case SIOCSIFMTU: /* Do not allow the MTU or caps to be directly changed */ error = EINVAL; break; default: error = ether_ioctl(ifp, cmd, data); break; } return (error); } static int lagg_ether_setmulti(struct lagg_softc *sc) { struct lagg_port *lp; LAGG_WLOCK_ASSERT(sc); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { /* First, remove any existing filter entries. */ lagg_ether_cmdmulti(lp, 0); /* copy all addresses from the lagg interface to the port */ lagg_ether_cmdmulti(lp, 1); } return (0); } static int lagg_ether_cmdmulti(struct lagg_port *lp, int set) { struct lagg_softc *sc = lp->lp_softc; struct ifnet *ifp = lp->lp_ifp; struct ifnet *scifp = sc->sc_ifp; struct lagg_mc *mc; struct ifmultiaddr *ifma; int error; LAGG_WLOCK_ASSERT(sc); if (set) { IF_ADDR_WLOCK(scifp); TAILQ_FOREACH(ifma, &scifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; mc = malloc(sizeof(struct lagg_mc), M_DEVBUF, M_NOWAIT); if (mc == NULL) { IF_ADDR_WUNLOCK(scifp); return (ENOMEM); } bcopy(ifma->ifma_addr, &mc->mc_addr, ifma->ifma_addr->sa_len); mc->mc_addr.sdl_index = ifp->if_index; mc->mc_ifma = NULL; SLIST_INSERT_HEAD(&lp->lp_mc_head, mc, mc_entries); } IF_ADDR_WUNLOCK(scifp); SLIST_FOREACH (mc, &lp->lp_mc_head, mc_entries) { error = if_addmulti(ifp, (struct sockaddr *)&mc->mc_addr, &mc->mc_ifma); if (error) return (error); } } else { while ((mc = SLIST_FIRST(&lp->lp_mc_head)) != NULL) { SLIST_REMOVE(&lp->lp_mc_head, mc, lagg_mc, mc_entries); if (mc->mc_ifma && !lp->lp_detaching) if_delmulti_ifma(mc->mc_ifma); free(mc, M_DEVBUF); } } return (0); } /* Handle a ref counted flag that should be set on the lagg port as well */ static int lagg_setflag(struct lagg_port *lp, int flag, int status, - int (*func)(struct ifnet *, int)) + int (*func)(struct ifnet *, int)) { struct lagg_softc *sc = lp->lp_softc; struct ifnet *scifp = sc->sc_ifp; struct ifnet *ifp = lp->lp_ifp; int error; LAGG_WLOCK_ASSERT(sc); status = status ? (scifp->if_flags & flag) : 0; /* Now "status" contains the flag value or 0 */ /* * See if recorded ports status is different from what * we want it to be. If it is, flip it. We record ports * status in lp_ifflags so that we won't clear ports flag * we haven't set. In fact, we don't clear or set ports * flags directly, but get or release references to them. * That's why we can be sure that recorded flags still are * in accord with actual ports flags. */ if (status != (lp->lp_ifflags & flag)) { error = (*func)(ifp, status); if (error) return (error); lp->lp_ifflags &= ~flag; lp->lp_ifflags |= status; } return (0); } /* * Handle IFF_* flags that require certain changes on the lagg port * if "status" is true, update ports flags respective to the lagg * if "status" is false, forcedly clear the flags set on port. */ static int lagg_setflags(struct lagg_port *lp, int status) { int error, i; for (i = 0; lagg_pflags[i].flag; i++) { error = lagg_setflag(lp, lagg_pflags[i].flag, status, lagg_pflags[i].func); if (error) return (error); } return (0); } static int lagg_transmit(struct ifnet *ifp, struct mbuf *m) { struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; int error, len, mcast; struct rm_priotracker tracker; len = m->m_pkthdr.len; mcast = (m->m_flags & (M_MCAST | M_BCAST)) ? 1 : 0; LAGG_RLOCK(sc, &tracker); /* We need a Tx algorithm and at least one port */ if (sc->sc_proto == LAGG_PROTO_NONE || sc->sc_count == 0) { LAGG_RUNLOCK(sc, &tracker); m_freem(m); ifp->if_oerrors++; return (ENXIO); } ETHER_BPF_MTAP(ifp, m); error = (*sc->sc_start)(sc, m); LAGG_RUNLOCK(sc, &tracker); if (error == 0) { counter_u64_add(sc->sc_opackets, 1); counter_u64_add(sc->sc_obytes, len); ifp->if_omcasts += mcast; } else ifp->if_oerrors++; return (error); } /* * The ifp->if_qflush entry point for lagg(4) is no-op. */ static void lagg_qflush(struct ifnet *ifp __unused) { } static struct mbuf * lagg_input(struct ifnet *ifp, struct mbuf *m) { struct lagg_port *lp = ifp->if_lagg; struct lagg_softc *sc = lp->lp_softc; struct ifnet *scifp = sc->sc_ifp; struct rm_priotracker tracker; LAGG_RLOCK(sc, &tracker); if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || (lp->lp_flags & LAGG_PORT_DISABLED) || sc->sc_proto == LAGG_PROTO_NONE) { LAGG_RUNLOCK(sc, &tracker); m_freem(m); return (NULL); } ETHER_BPF_MTAP(scifp, m); m = (*sc->sc_input)(sc, lp, m); if (m != NULL) { counter_u64_add(sc->sc_ipackets, 1); counter_u64_add(sc->sc_ibytes, m->m_pkthdr.len); if (scifp->if_flags & IFF_MONITOR) { m_freem(m); m = NULL; } } LAGG_RUNLOCK(sc, &tracker); return (m); } static int lagg_media_change(struct ifnet *ifp) { struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; if (sc->sc_ifflags & IFF_DEBUG) printf("%s\n", __func__); /* Ignore */ return (0); } static void lagg_media_status(struct ifnet *ifp, struct ifmediareq *imr) { struct lagg_softc *sc = (struct lagg_softc *)ifp->if_softc; struct lagg_port *lp; struct rm_priotracker tracker; imr->ifm_status = IFM_AVALID; imr->ifm_active = IFM_ETHER | IFM_AUTO; LAGG_RLOCK(sc, &tracker); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (LAGG_PORTACTIVE(lp)) imr->ifm_status |= IFM_ACTIVE; } LAGG_RUNLOCK(sc, &tracker); } static void lagg_linkstate(struct lagg_softc *sc) { struct lagg_port *lp; int new_link = LINK_STATE_DOWN; uint64_t speed; /* Our link is considered up if at least one of our ports is active */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (lp->lp_link_state == LINK_STATE_UP) { new_link = LINK_STATE_UP; break; } } if_link_state_change(sc->sc_ifp, new_link); /* Update if_baudrate to reflect the max possible speed */ switch (sc->sc_proto) { case LAGG_PROTO_FAILOVER: sc->sc_ifp->if_baudrate = sc->sc_primary != NULL ? sc->sc_primary->lp_ifp->if_baudrate : 0; break; case LAGG_PROTO_ROUNDROBIN: case LAGG_PROTO_LOADBALANCE: case LAGG_PROTO_ETHERCHANNEL: - case LAGG_PROTO_BROADCAST: + case LAGG_PROTO_BROADCAST: speed = 0; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) speed += lp->lp_ifp->if_baudrate; sc->sc_ifp->if_baudrate = speed; break; case LAGG_PROTO_LACP: /* LACP updates if_baudrate itself */ break; } } static void lagg_port_state(struct ifnet *ifp, int state) { struct lagg_port *lp = (struct lagg_port *)ifp->if_lagg; struct lagg_softc *sc = NULL; if (lp != NULL) sc = lp->lp_softc; if (sc == NULL) return; LAGG_WLOCK(sc); lagg_linkstate(sc); if (sc->sc_linkstate != NULL) (*sc->sc_linkstate)(lp); LAGG_WUNLOCK(sc); } struct lagg_port * lagg_link_active(struct lagg_softc *sc, struct lagg_port *lp) { struct lagg_port *lp_next, *rval = NULL; // int new_link = LINK_STATE_DOWN; LAGG_RLOCK_ASSERT(sc); /* * Search a port which reports an active link state. */ if (lp == NULL) goto search; if (LAGG_PORTACTIVE(lp)) { rval = lp; goto found; } if ((lp_next = SLIST_NEXT(lp, lp_entries)) != NULL && LAGG_PORTACTIVE(lp_next)) { rval = lp_next; goto found; } search: SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { if (LAGG_PORTACTIVE(lp_next)) { rval = lp_next; goto found; } } found: if (rval != NULL) { /* * The IEEE 802.1D standard assumes that a lagg with * multiple ports is always full duplex. This is valid * for load sharing laggs and if at least two links * are active. Unfortunately, checking the latter would * be too expensive at this point. XXX if ((sc->sc_capabilities & IFCAP_LAGG_FULLDUPLEX) && (sc->sc_count > 1)) new_link = LINK_STATE_FULL_DUPLEX; else new_link = rval->lp_link_state; */ } return (rval); } static const void * lagg_gethdr(struct mbuf *m, u_int off, u_int len, void *buf) { if (m->m_pkthdr.len < (off + len)) { return (NULL); } else if (m->m_len < (off + len)) { m_copydata(m, off, len, buf); return (buf); } return (mtod(m, char *) + off); } static int lagg_sysctl_active(SYSCTL_HANDLER_ARGS) { struct lagg_softc *sc = (struct lagg_softc *)arg1; struct lagg_port *lp; int error; /* LACP tracks active links automatically, the others do not */ if (sc->sc_proto != LAGG_PROTO_LACP) { sc->sc_active = 0; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) sc->sc_active += LAGG_PORTACTIVE(lp); } error = sysctl_handle_int(oidp, &sc->sc_active, 0, req); if ((error) || (req->newptr == NULL)) return (error); return (0); } uint32_t lagg_hashmbuf(struct lagg_softc *sc, struct mbuf *m, uint32_t key) { uint16_t etype; uint32_t p = key; int off; struct ether_header *eh; const struct ether_vlan_header *vlan; #ifdef INET const struct ip *ip; const uint32_t *ports; int iphlen; #endif #ifdef INET6 const struct ip6_hdr *ip6; uint32_t flow; #endif union { #ifdef INET struct ip ip; #endif #ifdef INET6 struct ip6_hdr ip6; #endif struct ether_vlan_header vlan; uint32_t port; } buf; off = sizeof(*eh); if (m->m_len < off) goto out; eh = mtod(m, struct ether_header *); etype = ntohs(eh->ether_type); if (sc->sc_flags & LAGG_F_HASHL2) { p = hash32_buf(&eh->ether_shost, ETHER_ADDR_LEN, p); p = hash32_buf(&eh->ether_dhost, ETHER_ADDR_LEN, p); } /* Special handling for encapsulating VLAN frames */ if ((m->m_flags & M_VLANTAG) && (sc->sc_flags & LAGG_F_HASHL2)) { p = hash32_buf(&m->m_pkthdr.ether_vtag, sizeof(m->m_pkthdr.ether_vtag), p); } else if (etype == ETHERTYPE_VLAN) { vlan = lagg_gethdr(m, off, sizeof(*vlan), &buf); if (vlan == NULL) goto out; if (sc->sc_flags & LAGG_F_HASHL2) p = hash32_buf(&vlan->evl_tag, sizeof(vlan->evl_tag), p); etype = ntohs(vlan->evl_proto); off += sizeof(*vlan) - sizeof(*eh); } switch (etype) { #ifdef INET case ETHERTYPE_IP: ip = lagg_gethdr(m, off, sizeof(*ip), &buf); if (ip == NULL) goto out; if (sc->sc_flags & LAGG_F_HASHL3) { p = hash32_buf(&ip->ip_src, sizeof(struct in_addr), p); p = hash32_buf(&ip->ip_dst, sizeof(struct in_addr), p); } if (!(sc->sc_flags & LAGG_F_HASHL4)) break; switch (ip->ip_p) { case IPPROTO_TCP: case IPPROTO_UDP: case IPPROTO_SCTP: iphlen = ip->ip_hl << 2; if (iphlen < sizeof(*ip)) break; off += iphlen; ports = lagg_gethdr(m, off, sizeof(*ports), &buf); if (ports == NULL) break; p = hash32_buf(ports, sizeof(*ports), p); break; } break; #endif #ifdef INET6 case ETHERTYPE_IPV6: if (!(sc->sc_flags & LAGG_F_HASHL3)) break; ip6 = lagg_gethdr(m, off, sizeof(*ip6), &buf); if (ip6 == NULL) goto out; p = hash32_buf(&ip6->ip6_src, sizeof(struct in6_addr), p); p = hash32_buf(&ip6->ip6_dst, sizeof(struct in6_addr), p); flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK; p = hash32_buf(&flow, sizeof(flow), p); /* IPv6 flow label */ break; #endif } out: return (p); } int lagg_enqueue(struct ifnet *ifp, struct mbuf *m) { return (ifp->if_transmit)(ifp, m); } /* * Simple round robin aggregation */ static void lagg_rr_attach(struct lagg_softc *sc) { sc->sc_start = lagg_rr_start; sc->sc_input = lagg_rr_input; sc->sc_port_create = NULL; sc->sc_capabilities = IFCAP_LAGG_FULLDUPLEX; sc->sc_seq = 0; } static int lagg_rr_start(struct lagg_softc *sc, struct mbuf *m) { struct lagg_port *lp; uint32_t p; p = atomic_fetchadd_32(&sc->sc_seq, 1); p %= sc->sc_count; lp = SLIST_FIRST(&sc->sc_ports); while (p--) lp = SLIST_NEXT(lp, lp_entries); /* * Check the port's link state. This will return the next active * port if the link is down or the port is NULL. */ if ((lp = lagg_link_active(sc, lp)) == NULL) { m_freem(m); return (ENETDOWN); } /* Send mbuf */ return (lagg_enqueue(lp->lp_ifp, m)); } static struct mbuf * lagg_rr_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { struct ifnet *ifp = sc->sc_ifp; /* Just pass in the packet to our lagg device */ m->m_pkthdr.rcvif = ifp; return (m); } /* * Broadcast mode */ static void lagg_bcast_attach(struct lagg_softc *sc) { - sc->sc_start = lagg_bcast_start; - sc->sc_input = lagg_bcast_input; - sc->sc_port_create = NULL; - sc->sc_port_destroy = NULL; - sc->sc_linkstate = NULL; - sc->sc_req = NULL; - sc->sc_portreq = NULL; + sc->sc_start = lagg_bcast_start; + sc->sc_input = lagg_bcast_input; + sc->sc_port_create = NULL; + sc->sc_port_destroy = NULL; + sc->sc_linkstate = NULL; + sc->sc_req = NULL; + sc->sc_portreq = NULL; } static int lagg_bcast_start(struct lagg_softc *sc, struct mbuf *m) { - int active_ports = 0; - int errors = 0; - int ret; - struct lagg_port *lp, *last = NULL; - struct mbuf *m0; + int active_ports = 0; + int errors = 0; + int ret; + struct lagg_port *lp, *last = NULL; + struct mbuf *m0; - SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { - if (!LAGG_PORTACTIVE(lp)) - continue; + SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { + if (!LAGG_PORTACTIVE(lp)) + continue; - active_ports++; + active_ports++; - if (last != NULL) { - m0 = m_copym(m, 0, M_COPYALL, - M_NOWAIT); - if (m0 == NULL) { - ret = ENOBUFS; - errors++; - break; - } + if (last != NULL) { + m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT); + if (m0 == NULL) { + ret = ENOBUFS; + errors++; + break; + } - ret = lagg_enqueue(last->lp_ifp, m0); - if (ret != 0) - errors++; - } - last = lp; - } - if (last == NULL) { - m_freem(m); - return (ENOENT); - } - if ((last = lagg_link_active(sc, last)) == NULL) { - m_freem(m); - return (ENETDOWN); - } + ret = lagg_enqueue(last->lp_ifp, m0); + if (ret != 0) + errors++; + } + last = lp; + } + if (last == NULL) { + m_freem(m); + return (ENOENT); + } + if ((last = lagg_link_active(sc, last)) == NULL) { + m_freem(m); + return (ENETDOWN); + } - ret = lagg_enqueue(last->lp_ifp, m); - if (ret != 0) - errors++; + ret = lagg_enqueue(last->lp_ifp, m); + if (ret != 0) + errors++; - if (errors == 0) - return (ret); + if (errors == 0) + return (ret); - return (0); + return (0); } static struct mbuf* -lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, - struct mbuf *m) +lagg_bcast_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { - struct ifnet *ifp = sc->sc_ifp; + struct ifnet *ifp = sc->sc_ifp; - /* Just pass in the packet to our lagg device */ - m->m_pkthdr.rcvif = ifp; - return (m); + /* Just pass in the packet to our lagg device */ + m->m_pkthdr.rcvif = ifp; + return (m); } /* * Active failover */ static void lagg_fail_attach(struct lagg_softc *sc) { sc->sc_start = lagg_fail_start; sc->sc_input = lagg_fail_input; sc->sc_port_create = NULL; sc->sc_port_destroy = NULL; } static int lagg_fail_start(struct lagg_softc *sc, struct mbuf *m) { struct lagg_port *lp; /* Use the master port if active or the next available port */ if ((lp = lagg_link_active(sc, sc->sc_primary)) == NULL) { m_freem(m); return (ENETDOWN); } /* Send mbuf */ return (lagg_enqueue(lp->lp_ifp, m)); } static struct mbuf * lagg_fail_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { struct ifnet *ifp = sc->sc_ifp; struct lagg_port *tmp_tp; if (lp == sc->sc_primary || lagg_failover_rx_all) { m->m_pkthdr.rcvif = ifp; return (m); } if (!LAGG_PORTACTIVE(sc->sc_primary)) { tmp_tp = lagg_link_active(sc, sc->sc_primary); /* * If tmp_tp is null, we've recieved a packet when all * our links are down. Weird, but process it anyways. */ if ((tmp_tp == NULL || tmp_tp == lp)) { m->m_pkthdr.rcvif = ifp; return (m); } } m_freem(m); return (NULL); } /* * Loadbalancing */ static void lagg_lb_attach(struct lagg_softc *sc) { struct lagg_port *lp; struct lagg_lb *lb; lb = malloc(sizeof(struct lagg_lb), M_DEVBUF, M_WAITOK | M_ZERO); sc->sc_start = lagg_lb_start; sc->sc_input = lagg_lb_input; sc->sc_port_create = lagg_lb_port_create; sc->sc_port_destroy = lagg_lb_port_destroy; sc->sc_capabilities = IFCAP_LAGG_FULLDUPLEX; lb->lb_key = arc4random(); - sc->sc_psc = (caddr_t)lb; + sc->sc_psc = lb; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lagg_lb_port_create(lp); } static void lagg_lb_detach(struct lagg_softc *sc) { struct lagg_lb *lb; lb = (struct lagg_lb *)sc->sc_psc; LAGG_WUNLOCK(sc); if (lb != NULL) free(lb, M_DEVBUF); } static int lagg_lb_porttable(struct lagg_softc *sc, struct lagg_port *lp) { struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; struct lagg_port *lp_next; int i = 0; bzero(&lb->lb_ports, sizeof(lb->lb_ports)); SLIST_FOREACH(lp_next, &sc->sc_ports, lp_entries) { if (lp_next == lp) continue; if (i >= LAGG_MAX_PORTS) return (EINVAL); if (sc->sc_ifflags & IFF_DEBUG) printf("%s: port %s at index %d\n", sc->sc_ifname, lp_next->lp_ifname, i); lb->lb_ports[i++] = lp_next; } return (0); } static int lagg_lb_port_create(struct lagg_port *lp) { struct lagg_softc *sc = lp->lp_softc; return (lagg_lb_porttable(sc, NULL)); } static void lagg_lb_port_destroy(struct lagg_port *lp) { struct lagg_softc *sc = lp->lp_softc; lagg_lb_porttable(sc, lp); } static int lagg_lb_start(struct lagg_softc *sc, struct mbuf *m) { struct lagg_lb *lb = (struct lagg_lb *)sc->sc_psc; struct lagg_port *lp = NULL; uint32_t p = 0; if (sc->use_flowid && (m->m_flags & M_FLOWID)) p = m->m_pkthdr.flowid >> sc->flowid_shift; else p = lagg_hashmbuf(sc, m, lb->lb_key); p %= sc->sc_count; lp = lb->lb_ports[p]; /* * Check the port's link state. This will return the next active * port if the link is down or the port is NULL. */ if ((lp = lagg_link_active(sc, lp)) == NULL) { m_freem(m); return (ENETDOWN); } /* Send mbuf */ return (lagg_enqueue(lp->lp_ifp, m)); } static struct mbuf * lagg_lb_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { struct ifnet *ifp = sc->sc_ifp; /* Just pass in the packet to our lagg device */ m->m_pkthdr.rcvif = ifp; return (m); } /* * 802.3ad LACP */ static void lagg_lacp_attach(struct lagg_softc *sc) { struct lagg_port *lp; sc->sc_port_create = lacp_port_create; sc->sc_port_destroy = lacp_port_destroy; sc->sc_linkstate = lacp_linkstate; sc->sc_start = lagg_lacp_start; sc->sc_input = lagg_lacp_input; sc->sc_init = lacp_init; sc->sc_stop = lacp_stop; sc->sc_lladdr = lagg_lacp_lladdr; sc->sc_req = lacp_req; sc->sc_portreq = lacp_portreq; lacp_attach(sc); SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lacp_port_create(lp); } static void lagg_lacp_detach(struct lagg_softc *sc) { struct lagg_port *lp; void *psc; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lacp_port_destroy(lp); psc = sc->sc_psc; sc->sc_psc = NULL; LAGG_WUNLOCK(sc); lacp_detach(psc); } static void lagg_lacp_lladdr(struct lagg_softc *sc) { struct lagg_port *lp; /* purge all the lacp ports */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lacp_port_destroy(lp); /* add them back in */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lacp_port_create(lp); } static int lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m) { struct lagg_port *lp; lp = lacp_select_tx_port(sc, m); if (lp == NULL) { m_freem(m); return (ENETDOWN); } /* Send mbuf */ return (lagg_enqueue(lp->lp_ifp, m)); } static struct mbuf * lagg_lacp_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { struct ifnet *ifp = sc->sc_ifp; struct ether_header *eh; u_short etype; eh = mtod(m, struct ether_header *); etype = ntohs(eh->ether_type); /* Tap off LACP control messages */ if ((m->m_flags & M_VLANTAG) == 0 && etype == ETHERTYPE_SLOW) { m = lacp_input(lp, m); if (m == NULL) return (NULL); } /* * If the port is not collecting or not in the active aggregator then * free and return. */ if (lacp_iscollecting(lp) == 0 || lacp_isactive(lp) == 0) { m_freem(m); return (NULL); } m->m_pkthdr.rcvif = ifp; return (m); } static void lagg_callout(void *arg) { struct lagg_softc *sc = (struct lagg_softc *)arg; struct ifnet *ifp = sc->sc_ifp; ifp->if_ipackets = counter_u64_fetch(sc->sc_ipackets); ifp->if_opackets = counter_u64_fetch(sc->sc_opackets); ifp->if_ibytes = counter_u64_fetch(sc->sc_ibytes); ifp->if_obytes = counter_u64_fetch(sc->sc_obytes); callout_reset(&sc->sc_callout, hz, lagg_callout, sc); } Index: head/sys/net/if_lagg.h =================================================================== --- head/sys/net/if_lagg.h (revision 272174) +++ head/sys/net/if_lagg.h (revision 272175) @@ -1,288 +1,288 @@ /* $OpenBSD: if_trunk.h,v 1.11 2007/01/31 06:20:19 reyk Exp $ */ /* * Copyright (c) 2005, 2006 Reyk Floeter * * 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. * * $FreeBSD$ */ #ifndef _NET_LAGG_H #define _NET_LAGG_H /* * Global definitions */ #define LAGG_MAX_PORTS 32 /* logically */ #define LAGG_MAX_NAMESIZE 32 /* name of a protocol */ #define LAGG_MAX_STACKING 4 /* maximum number of stacked laggs */ /* Lagg flags */ #define LAGG_F_HASHL2 0x00000001 /* hash layer 2 */ #define LAGG_F_HASHL3 0x00000002 /* hash layer 3 */ #define LAGG_F_HASHL4 0x00000004 /* hash layer 4 */ #define LAGG_F_HASHMASK 0x00000007 /* Port flags */ #define LAGG_PORT_SLAVE 0x00000000 /* normal enslaved port */ #define LAGG_PORT_MASTER 0x00000001 /* primary port */ #define LAGG_PORT_STACK 0x00000002 /* stacked lagg port */ #define LAGG_PORT_ACTIVE 0x00000004 /* port is active */ #define LAGG_PORT_COLLECTING 0x00000008 /* port is receiving frames */ #define LAGG_PORT_DISTRIBUTING 0x00000010 /* port is sending frames */ #define LAGG_PORT_DISABLED 0x00000020 /* port is disabled */ #define LAGG_PORT_BITS "\20\01MASTER\02STACK\03ACTIVE\04COLLECTING" \ "\05DISTRIBUTING\06DISABLED" /* Supported lagg PROTOs */ typedef enum { LAGG_PROTO_NONE = 0, /* no lagg protocol defined */ LAGG_PROTO_ROUNDROBIN, /* simple round robin */ LAGG_PROTO_FAILOVER, /* active failover */ LAGG_PROTO_LOADBALANCE, /* loadbalance */ LAGG_PROTO_LACP, /* 802.3ad lacp */ LAGG_PROTO_ETHERCHANNEL,/* Cisco FEC */ LAGG_PROTO_BROADCAST, /* broadcast */ LAGG_PROTO_MAX, } lagg_proto; struct lagg_protos { const char *lpr_name; lagg_proto lpr_proto; }; #define LAGG_PROTO_DEFAULT LAGG_PROTO_FAILOVER #define LAGG_PROTOS { \ { "failover", LAGG_PROTO_FAILOVER }, \ { "fec", LAGG_PROTO_ETHERCHANNEL }, \ { "lacp", LAGG_PROTO_LACP }, \ { "loadbalance", LAGG_PROTO_LOADBALANCE }, \ { "roundrobin", LAGG_PROTO_ROUNDROBIN }, \ { "broadcast", LAGG_PROTO_BROADCAST }, \ { "none", LAGG_PROTO_NONE }, \ { "default", LAGG_PROTO_DEFAULT } \ } /* * lagg ioctls. */ /* * LACP current operational parameters structure. */ struct lacp_opreq { uint16_t actor_prio; uint8_t actor_mac[ETHER_ADDR_LEN]; uint16_t actor_key; uint16_t actor_portprio; uint16_t actor_portno; uint8_t actor_state; uint16_t partner_prio; uint8_t partner_mac[ETHER_ADDR_LEN]; uint16_t partner_key; uint16_t partner_portprio; uint16_t partner_portno; uint8_t partner_state; }; /* lagg port settings */ struct lagg_reqport { char rp_ifname[IFNAMSIZ]; /* name of the lagg */ char rp_portname[IFNAMSIZ]; /* name of the port */ u_int32_t rp_prio; /* port priority */ u_int32_t rp_flags; /* port flags */ union { struct lacp_opreq rpsc_lacp; } rp_psc; #define rp_lacpreq rp_psc.rpsc_lacp }; #define SIOCGLAGGPORT _IOWR('i', 140, struct lagg_reqport) #define SIOCSLAGGPORT _IOW('i', 141, struct lagg_reqport) #define SIOCSLAGGDELPORT _IOW('i', 142, struct lagg_reqport) /* lagg, ports and options */ struct lagg_reqall { char ra_ifname[IFNAMSIZ]; /* name of the lagg */ u_int ra_proto; /* lagg protocol */ size_t ra_size; /* size of buffer */ struct lagg_reqport *ra_port; /* allocated buffer */ int ra_ports; /* total port count */ union { struct lacp_opreq rpsc_lacp; } ra_psc; #define ra_lacpreq ra_psc.rpsc_lacp }; #define SIOCGLAGG _IOWR('i', 143, struct lagg_reqall) #define SIOCSLAGG _IOW('i', 144, struct lagg_reqall) struct lagg_reqflags { char rf_ifname[IFNAMSIZ]; /* name of the lagg */ uint32_t rf_flags; /* lagg protocol */ }; #define SIOCGLAGGFLAGS _IOWR('i', 145, struct lagg_reqflags) #define SIOCSLAGGHASH _IOW('i', 146, struct lagg_reqflags) #ifdef _KERNEL #include /* * Internal kernel part */ #define lp_ifname lp_ifp->if_xname /* interface name */ #define lp_link_state lp_ifp->if_link_state /* link state */ #define LAGG_PORTACTIVE(_tp) ( \ ((_tp)->lp_link_state == LINK_STATE_UP) && \ ((_tp)->lp_ifp->if_flags & IFF_UP) \ ) struct lagg_ifreq { union { struct ifreq ifreq; struct { char ifr_name[IFNAMSIZ]; struct sockaddr_storage ifr_ss; } ifreq_storage; } ifreq; }; #define sc_ifflags sc_ifp->if_flags /* flags */ #define sc_ifname sc_ifp->if_xname /* name */ #define sc_capabilities sc_ifp->if_capabilities /* capabilities */ #define IFCAP_LAGG_MASK 0xffff0000 /* private capabilities */ #define IFCAP_LAGG_FULLDUPLEX 0x00010000 /* full duplex with >1 ports */ /* Private data used by the loadbalancing protocol */ struct lagg_lb { u_int32_t lb_key; struct lagg_port *lb_ports[LAGG_MAX_PORTS]; }; struct lagg_mc { struct sockaddr_dl mc_addr; struct ifmultiaddr *mc_ifma; SLIST_ENTRY(lagg_mc) mc_entries; }; /* List of interfaces to have the MAC address modified */ struct lagg_llq { struct ifnet *llq_ifp; uint8_t llq_lladdr[ETHER_ADDR_LEN]; SLIST_ENTRY(lagg_llq) llq_entries; }; struct lagg_softc { struct ifnet *sc_ifp; /* virtual interface */ struct rmlock sc_mtx; struct mtx sc_call_mtx; int sc_proto; /* lagg protocol */ u_int sc_count; /* number of ports */ u_int sc_active; /* active port count */ u_int sc_flapping; /* number of flapping * events */ struct lagg_port *sc_primary; /* primary port */ struct ifmedia sc_media; /* media config */ - caddr_t sc_psc; /* protocol data */ + void *sc_psc; /* protocol data */ uint32_t sc_seq; /* sequence counter */ uint32_t sc_flags; counter_u64_t sc_ipackets; counter_u64_t sc_opackets; counter_u64_t sc_ibytes; counter_u64_t sc_obytes; SLIST_HEAD(__tplhd, lagg_port) sc_ports; /* list of interfaces */ SLIST_ENTRY(lagg_softc) sc_entries; struct task sc_lladdr_task; SLIST_HEAD(__llqhd, lagg_llq) sc_llq_head; /* interfaces to program the lladdr on */ /* lagg protocol callbacks */ int (*sc_start)(struct lagg_softc *, struct mbuf *); struct mbuf *(*sc_input)(struct lagg_softc *, struct lagg_port *, struct mbuf *); int (*sc_port_create)(struct lagg_port *); void (*sc_port_destroy)(struct lagg_port *); void (*sc_linkstate)(struct lagg_port *); void (*sc_init)(struct lagg_softc *); void (*sc_stop)(struct lagg_softc *); void (*sc_lladdr)(struct lagg_softc *); - void (*sc_req)(struct lagg_softc *, caddr_t); - void (*sc_portreq)(struct lagg_port *, caddr_t); + void (*sc_req)(struct lagg_softc *, void *); + void (*sc_portreq)(struct lagg_port *, void *); eventhandler_tag vlan_attach; eventhandler_tag vlan_detach; struct callout sc_callout; struct sysctl_ctx_list ctx; /* sysctl variables */ struct sysctl_oid *sc_oid; /* sysctl tree oid */ int use_flowid; /* use M_FLOWID */ int flowid_shift; /* shift the flowid */ }; struct lagg_port { struct ifnet *lp_ifp; /* physical interface */ struct lagg_softc *lp_softc; /* parent lagg */ uint8_t lp_lladdr[ETHER_ADDR_LEN]; u_char lp_iftype; /* interface type */ uint32_t lp_prio; /* port priority */ uint32_t lp_flags; /* port flags */ int lp_ifflags; /* saved ifp flags */ void *lh_cookie; /* if state hook */ - caddr_t lp_psc; /* protocol data */ + void *lp_psc; /* protocol data */ int lp_detaching; /* ifnet is detaching */ SLIST_HEAD(__mclhd, lagg_mc) lp_mc_head; /* multicast addresses */ /* Redirected callbacks */ int (*lp_ioctl)(struct ifnet *, u_long, caddr_t); int (*lp_output)(struct ifnet *, struct mbuf *, const struct sockaddr *, struct route *); SLIST_ENTRY(lagg_port) lp_entries; }; #define LAGG_LOCK_INIT(_sc) rm_init(&(_sc)->sc_mtx, "if_lagg rmlock") #define LAGG_LOCK_DESTROY(_sc) rm_destroy(&(_sc)->sc_mtx) #define LAGG_RLOCK(_sc, _p) rm_rlock(&(_sc)->sc_mtx, (_p)) #define LAGG_WLOCK(_sc) rm_wlock(&(_sc)->sc_mtx) #define LAGG_RUNLOCK(_sc, _p) rm_runlock(&(_sc)->sc_mtx, (_p)) #define LAGG_WUNLOCK(_sc) rm_wunlock(&(_sc)->sc_mtx) #define LAGG_RLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_RLOCKED) #define LAGG_WLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_WLOCKED) #define LAGG_CALLOUT_LOCK_INIT(_sc) \ mtx_init(&(_sc)->sc_call_mtx, "if_lagg callout mutex", NULL,\ MTX_DEF) #define LAGG_CALLOUT_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_call_mtx) extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *); extern void (*lagg_linkstate_p)(struct ifnet *, int ); int lagg_enqueue(struct ifnet *, struct mbuf *); uint32_t lagg_hashmbuf(struct lagg_softc *, struct mbuf *, uint32_t); SYSCTL_DECL(_net_link_lagg); #endif /* _KERNEL */ #endif /* _NET_LAGG_H */