Index: head/sbin/ifconfig/iflagg.c =================================================================== --- head/sbin/ifconfig/iflagg.c (revision 294614) +++ head/sbin/ifconfig/iflagg.c (revision 294615) @@ -1,316 +1,332 @@ /*- */ #ifndef lint static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ifconfig.h" char lacpbuf[120]; /* LACP peer '[(a,a,a),(p,p,p)]' */ static void setlaggport(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_reqport rp; bzero(&rp, sizeof(rp)); strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname)); strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname)); /* Don't choke if the port is already in this lagg. */ if (ioctl(s, SIOCSLAGGPORT, &rp) && errno != EEXIST) err(1, "SIOCSLAGGPORT"); } static void unsetlaggport(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_reqport rp; bzero(&rp, sizeof(rp)); strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname)); strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname)); if (ioctl(s, SIOCSLAGGDELPORT, &rp)) err(1, "SIOCSLAGGDELPORT"); } static void setlaggproto(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_protos lpr[] = LAGG_PROTOS; struct lagg_reqall ra; int i; bzero(&ra, sizeof(ra)); ra.ra_proto = LAGG_PROTO_MAX; for (i = 0; i < nitems(lpr); i++) { if (strcmp(val, lpr[i].lpr_name) == 0) { ra.ra_proto = lpr[i].lpr_proto; break; } } if (ra.ra_proto == LAGG_PROTO_MAX) errx(1, "Invalid aggregation protocol: %s", val); strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname)); if (ioctl(s, SIOCSLAGG, &ra) != 0) err(1, "SIOCSLAGG"); } static void setlaggflowidshift(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_reqopts ro; bzero(&ro, sizeof(ro)); ro.ro_opts = LAGG_OPT_FLOWIDSHIFT; strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname)); ro.ro_flowid_shift = (int)strtol(val, NULL, 10); if (ro.ro_flowid_shift & ~LAGG_OPT_FLOWIDSHIFT_MASK) errx(1, "Invalid flowid_shift option: %s", val); if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0) err(1, "SIOCSLAGGOPTS"); } static void +setlaggrr_limit(const char *val, int d, int s, const struct afswtch *afp) +{ + struct lagg_reqopts ro; + + bzero(&ro, sizeof(ro)); + strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname)); + ro.ro_bkt = (int)strtol(val, NULL, 10); + + if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0) + err(1, "SIOCSLAGG"); +} + +static void setlaggsetopt(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_reqopts ro; bzero(&ro, sizeof(ro)); ro.ro_opts = d; switch (ro.ro_opts) { case LAGG_OPT_USE_FLOWID: case -LAGG_OPT_USE_FLOWID: case LAGG_OPT_LACP_STRICT: case -LAGG_OPT_LACP_STRICT: case LAGG_OPT_LACP_TXTEST: case -LAGG_OPT_LACP_TXTEST: case LAGG_OPT_LACP_RXTEST: case -LAGG_OPT_LACP_RXTEST: case LAGG_OPT_LACP_TIMEOUT: case -LAGG_OPT_LACP_TIMEOUT: break; default: err(1, "Invalid lagg option"); } strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname)); if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0) err(1, "SIOCSLAGGOPTS"); } static void setlagghash(const char *val, int d, int s, const struct afswtch *afp) { struct lagg_reqflags rf; char *str, *tmp, *tok; rf.rf_flags = 0; str = tmp = strdup(val); while ((tok = strsep(&tmp, ",")) != NULL) { if (strcmp(tok, "l2") == 0) rf.rf_flags |= LAGG_F_HASHL2; else if (strcmp(tok, "l3") == 0) rf.rf_flags |= LAGG_F_HASHL3; else if (strcmp(tok, "l4") == 0) rf.rf_flags |= LAGG_F_HASHL4; else errx(1, "Invalid lagghash option: %s", tok); } free(str); if (rf.rf_flags == 0) errx(1, "No lagghash options supplied"); strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname)); if (ioctl(s, SIOCSLAGGHASH, &rf)) err(1, "SIOCSLAGGHASH"); } static 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); } static char * lacp_format_peer(struct lacp_opreq *req, const char *sep) { char macbuf1[20]; char macbuf2[20]; snprintf(lacpbuf, sizeof(lacpbuf), "[(%04X,%s,%04X,%04X,%04X),%s(%04X,%s,%04X,%04X,%04X)]", req->actor_prio, lacp_format_mac(req->actor_mac, macbuf1, sizeof(macbuf1)), req->actor_key, req->actor_portprio, req->actor_portno, sep, req->partner_prio, lacp_format_mac(req->partner_mac, macbuf2, sizeof(macbuf2)), req->partner_key, req->partner_portprio, req->partner_portno); return(lacpbuf); } static void lagg_status(int s) { struct lagg_protos lpr[] = LAGG_PROTOS; struct lagg_reqport rp, rpbuf[LAGG_MAX_PORTS]; struct lagg_reqall ra; struct lagg_reqopts ro; struct lagg_reqflags rf; struct lacp_opreq *lp; const char *proto = ""; int i, isport = 0; bzero(&rp, sizeof(rp)); bzero(&ra, sizeof(ra)); bzero(&ro, sizeof(ro)); strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname)); strlcpy(rp.rp_portname, name, sizeof(rp.rp_portname)); if (ioctl(s, SIOCGLAGGPORT, &rp) == 0) isport = 1; strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname)); ra.ra_size = sizeof(rpbuf); ra.ra_port = rpbuf; strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname)); ioctl(s, SIOCGLAGGOPTS, &ro); strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname)); if (ioctl(s, SIOCGLAGGFLAGS, &rf) != 0) rf.rf_flags = 0; if (ioctl(s, SIOCGLAGG, &ra) == 0) { lp = (struct lacp_opreq *)&ra.ra_lacpreq; for (i = 0; i < nitems(lpr); i++) { if (ra.ra_proto == lpr[i].lpr_proto) { proto = lpr[i].lpr_name; break; } } printf("\tlaggproto %s", proto); if (rf.rf_flags & LAGG_F_HASHMASK) { const char *sep = ""; printf(" lagghash "); if (rf.rf_flags & LAGG_F_HASHL2) { printf("%sl2", sep); sep = ","; } if (rf.rf_flags & LAGG_F_HASHL3) { printf("%sl3", sep); sep = ","; } if (rf.rf_flags & LAGG_F_HASHL4) { printf("%sl4", sep); sep = ","; } } if (isport) printf(" laggdev %s", rp.rp_ifname); putchar('\n'); if (verbose) { printf("\tlagg options:\n"); printb("\t\tflags", ro.ro_opts, LAGG_OPT_BITS); putchar('\n'); printf("\t\tflowid_shift: %d\n", ro.ro_flowid_shift); + if (ra.ra_proto == LAGG_PROTO_ROUNDROBIN) + printf("\t\trr_limit: %d\n", ro.ro_bkt); printf("\tlagg statistics:\n"); printf("\t\tactive ports: %d\n", ro.ro_active); printf("\t\tflapping: %u\n", ro.ro_flapping); if (ra.ra_proto == LAGG_PROTO_LACP) { printf("\tlag id: %s\n", lacp_format_peer(lp, "\n\t\t ")); } } for (i = 0; i < ra.ra_ports; i++) { lp = (struct lacp_opreq *)&rpbuf[i].rp_lacpreq; printf("\tlaggport: %s ", rpbuf[i].rp_portname); printb("flags", rpbuf[i].rp_flags, LAGG_PORT_BITS); if (verbose && ra.ra_proto == LAGG_PROTO_LACP) printb(" state", lp->actor_state, LACP_STATE_BITS); putchar('\n'); if (verbose && ra.ra_proto == LAGG_PROTO_LACP) printf("\t\t%s\n", lacp_format_peer(lp, "\n\t\t ")); } if (0 /* XXX */) { printf("\tsupported aggregation protocols:\n"); for (i = 0; i < (sizeof(lpr) / sizeof(lpr[0])); i++) printf("\t\tlaggproto %s\n", lpr[i].lpr_name); } } } static struct cmd lagg_cmds[] = { DEF_CMD_ARG("laggport", setlaggport), DEF_CMD_ARG("-laggport", unsetlaggport), DEF_CMD_ARG("laggproto", setlaggproto), DEF_CMD_ARG("lagghash", setlagghash), DEF_CMD("use_flowid", LAGG_OPT_USE_FLOWID, setlaggsetopt), DEF_CMD("-use_flowid", -LAGG_OPT_USE_FLOWID, setlaggsetopt), DEF_CMD("lacp_strict", LAGG_OPT_LACP_STRICT, setlaggsetopt), DEF_CMD("-lacp_strict", -LAGG_OPT_LACP_STRICT, setlaggsetopt), DEF_CMD("lacp_txtest", LAGG_OPT_LACP_TXTEST, setlaggsetopt), DEF_CMD("-lacp_txtest", -LAGG_OPT_LACP_TXTEST, setlaggsetopt), DEF_CMD("lacp_rxtest", LAGG_OPT_LACP_RXTEST, setlaggsetopt), DEF_CMD("-lacp_rxtest", -LAGG_OPT_LACP_RXTEST, setlaggsetopt), DEF_CMD("lacp_fast_timeout", LAGG_OPT_LACP_TIMEOUT, setlaggsetopt), DEF_CMD("-lacp_fast_timeout", -LAGG_OPT_LACP_TIMEOUT, setlaggsetopt), DEF_CMD_ARG("flowid_shift", setlaggflowidshift), + DEF_CMD_ARG("rr_limit", setlaggrr_limit), }; static struct afswtch af_lagg = { .af_name = "af_lagg", .af_af = AF_UNSPEC, .af_other_status = lagg_status, }; static __constructor void lagg_ctor(void) { int i; for (i = 0; i < nitems(lagg_cmds); i++) cmd_register(&lagg_cmds[i]); af_register(&af_lagg); } Index: head/share/man/man4/lagg.4 =================================================================== --- head/share/man/man4/lagg.4 (revision 294614) +++ head/share/man/man4/lagg.4 (revision 294615) @@ -1,204 +1,222 @@ .\" $OpenBSD: trunk.4,v 1.18 2006/06/09 13:53:34 jmc 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. .\" .\" $FreeBSD$ .\" -.Dd November 6, 2015 +.Dd January 23, 2016 .Dt LAGG 4 .Os .Sh NAME .Nm lagg .Nd link aggregation and link failover interface .Sh SYNOPSIS To compile this driver into the kernel, place the following line in your kernel configuration file: .Bd -ragged -offset indent .Cd "device lagg" .Ed .Pp Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : .Bd -literal -offset indent if_lagg_load="YES" .Ed .Sh DESCRIPTION The .Nm interface allows aggregation of multiple network interfaces as one virtual .Nm interface for the purpose of providing fault-tolerance and high-speed links. .Pp A .Nm interface can be created using the .Ic ifconfig lagg Ns Ar N Ic create command. It can use different link aggregation protocols specified using the .Ic laggproto Ar proto option. Child interfaces can be added using the .Ic laggport Ar child-iface option and removed using the .Ic -laggport Ar child-iface option. .Pp The driver currently supports the aggregation protocols .Ic failover (the default), .Ic lacp , .Ic loadbalance , .Ic roundrobin , .Ic broadcast , and .Ic none . The protocols determine which ports are used for outgoing traffic and whether a specific port accepts incoming traffic. The interface link state is used to validate if the port is active or not. .Bl -tag -width loadbalance .It Ic failover Sends traffic only through the active port. If the master port becomes unavailable, the next active port is used. The first interface added is the master port; any interfaces added after that are used as failover devices. .Pp By default, received traffic is only accepted when they are received through the active port. This constraint can be relaxed by setting the .Va net.link.lagg.failover_rx_all .Xr sysctl 8 variable to a nonzero value, which is useful for certain bridged network setups. .Ic loadbalance mode. .It Ic lacp Supports the IEEE 802.1AX (formerly 802.3ad) Link Aggregation Control Protocol (LACP) and the Marker Protocol. LACP will negotiate a set of aggregable links with the peer in to one or more Link Aggregated Groups. Each LAG is composed of ports of the same speed, set to full-duplex operation. The traffic will be balanced across the ports in the LAG with the greatest total speed, in most cases there will only be one LAG which contains all ports. In the event of changes in physical connectivity, Link Aggregation will quickly converge to a new configuration. .It Ic loadbalance Balances outgoing traffic across the active ports based on hashed protocol header information and accepts incoming traffic from any active port. This is a static setup and does not negotiate aggregation with the peer or exchange frames to monitor the link. The hash includes the Ethernet source and destination address, and, if available, the VLAN tag, and the IP source and destination address. .It Ic roundrobin Distributes outgoing traffic using a round-robin scheduler through all active ports and accepts incoming traffic from any active port. +Using +.Ic roundrobin +mode can cause unordered packet arrival at the client. +Throughput might be limited as the client performs CPU-intensive packet +reordering. .It Ic broadcast Sends frames to all ports of the LAG and receives frames on any port of the LAG. .It Ic none This protocol is intended to do nothing: it disables any traffic without disabling the .Nm interface itself. .El .Pp Each .Nm interface is created at runtime using interface cloning. This is most easily done with the .Xr ifconfig 8 .Cm create command or using the .Va cloned_interfaces variable in .Xr rc.conf 5 . .Pp The MTU of the first interface to be added is used as the lagg MTU. All additional interfaces are required to have exactly the same value. .Pp The .Ic loadbalance and .Ic lacp modes will use the RSS hash from the network card if available to avoid computing one, this may give poor traffic distribution if the hash is invalid or uses less of the protocol header information. Local hash computation can be forced per interface by setting the .Cm use_flowid .Xr ifconfig 8 flag. The default for new interfaces is set via the .Va net.link.lagg.default_use_flowid .Xr sysctl 8 . .Sh EXAMPLES Create a link aggregation using LACP with two .Xr bge 4 Gigabit Ethernet interfaces: .Bd -literal -offset indent # ifconfig bge0 up # ifconfig bge1 up # ifconfig lagg0 create # ifconfig lagg0 laggproto lacp laggport bge0 laggport bge1 \e 192.168.1.1 netmask 255.255.255.0 +.Ed +.Pp +Create a link aggregation using ROUNDROBIN with two +.Xr bge 4 +Gigabit Ethernet interfaces and set the limit of 500 packets +per interface: +.Bd -literal -offset indent +# ifconfig bge0 up +# ifconfig bge1 up +# ifconfig lagg0 create +# ifconfig lagg0 laggproto roundrobin laggport bge0 laggport bge1 \e + 192.168.1.1 netmask 255.255.255.0 +# ifconfig lagg0 rr_limit 500 .Ed .Pp The following example uses an active failover interface to set up roaming between wired and wireless networks using two network devices. Whenever the wired master interface is unplugged, the wireless failover device will be used: .Bd -literal -offset indent # ifconfig em0 up # ifconfig ath0 ether 00:11:22:33:44:55 # ifconfig create wlan0 wlandev ath0 ssid my_net up # ifconfig lagg0 create # ifconfig lagg0 laggproto failover laggport em0 laggport wlan0 \e 192.168.1.1 netmask 255.255.255.0 .Ed .Pp (Note the mac address of the wireless device is forced to match the wired device as a workaround.) .Sh SEE ALSO .Xr ng_one2many 4 , .Xr ifconfig 8 , .Xr sysctl 8 .Sh HISTORY The .Nm device first appeared in .Fx 6.3 . .Sh AUTHORS .An -nosplit The .Nm driver was written under the name .Nm trunk by .An Reyk Floeter Aq Mt reyk@openbsd.org . The LACP implementation was written by .An YAMAMOTO Takashi for .Nx . .Sh BUGS There is no way to configure LACP administrative variables, including system and port priorities. The current implementation always performs active-mode LACP and uses 0x8000 as system and port priorities. Index: head/sys/net/if_lagg.c =================================================================== --- head/sys/net/if_lagg.c (revision 294614) +++ head/sys/net/if_lagg.c (revision 294615) @@ -1,2219 +1,2240 @@ /* $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 + * Copyright (c) 2014, 2016 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} }; VNET_DEFINE(SLIST_HEAD(__trhead, lagg_softc), lagg_list); /* list of laggs */ #define V_lagg_list VNET(lagg_list) static VNET_DEFINE(struct mtx, lagg_list_mtx); #define V_lagg_list_mtx VNET(lagg_list_mtx) #define LAGG_LIST_LOCK_INIT(x) mtx_init(&V_lagg_list_mtx, \ "if_lagg list", NULL, MTX_DEF) #define LAGG_LIST_LOCK_DESTROY(x) mtx_destroy(&V_lagg_list_mtx) #define LAGG_LIST_LOCK(x) mtx_lock(&V_lagg_list_mtx) #define LAGG_LIST_UNLOCK(x) mtx_unlock(&V_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 VNET_DEFINE(struct if_clone *, lagg_cloner); #define V_lagg_cloner VNET(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 *, lagg_llqtype); 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 uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt); 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 *); /* 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 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 int lagg_bcast_start(struct lagg_softc *, struct mbuf *); static struct mbuf *lagg_bcast_input(struct lagg_softc *, struct lagg_port *, 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 *); /* lagg protocol table */ static const struct lagg_proto { lagg_proto pr_num; void (*pr_attach)(struct lagg_softc *); void (*pr_detach)(struct lagg_softc *); int (*pr_start)(struct lagg_softc *, struct mbuf *); struct mbuf * (*pr_input)(struct lagg_softc *, struct lagg_port *, struct mbuf *); int (*pr_addport)(struct lagg_port *); void (*pr_delport)(struct lagg_port *); void (*pr_linkstate)(struct lagg_port *); void (*pr_init)(struct lagg_softc *); void (*pr_stop)(struct lagg_softc *); void (*pr_lladdr)(struct lagg_softc *); void (*pr_request)(struct lagg_softc *, void *); void (*pr_portreq)(struct lagg_port *, void *); } lagg_protos[] = { { .pr_num = LAGG_PROTO_NONE }, { .pr_num = LAGG_PROTO_ROUNDROBIN, .pr_attach = lagg_rr_attach, .pr_start = lagg_rr_start, .pr_input = lagg_rr_input, }, { .pr_num = LAGG_PROTO_FAILOVER, .pr_start = lagg_fail_start, .pr_input = lagg_fail_input, }, { .pr_num = LAGG_PROTO_LOADBALANCE, .pr_attach = lagg_lb_attach, .pr_detach = lagg_lb_detach, .pr_start = lagg_lb_start, .pr_input = lagg_lb_input, .pr_addport = lagg_lb_port_create, .pr_delport = lagg_lb_port_destroy, }, { .pr_num = LAGG_PROTO_LACP, .pr_attach = lagg_lacp_attach, .pr_detach = lagg_lacp_detach, .pr_start = lagg_lacp_start, .pr_input = lagg_lacp_input, .pr_addport = lacp_port_create, .pr_delport = lacp_port_destroy, .pr_linkstate = lacp_linkstate, .pr_init = lacp_init, .pr_stop = lacp_stop, .pr_lladdr = lagg_lacp_lladdr, .pr_request = lacp_req, .pr_portreq = lacp_portreq, }, { .pr_num = LAGG_PROTO_BROADCAST, .pr_start = lagg_bcast_start, .pr_input = lagg_bcast_input, }, }; SYSCTL_DECL(_net_link); SYSCTL_NODE(_net_link, OID_AUTO, lagg, CTLFLAG_RW, 0, "Link Aggregation"); /* Allow input on any failover links */ static VNET_DEFINE(int, lagg_failover_rx_all); #define V_lagg_failover_rx_all VNET(lagg_failover_rx_all) SYSCTL_INT(_net_link_lagg, OID_AUTO, failover_rx_all, CTLFLAG_RW | CTLFLAG_VNET, &VNET_NAME(lagg_failover_rx_all), 0, "Accept input from any interface in a failover lagg"); /* Default value for using flowid */ static VNET_DEFINE(int, def_use_flowid) = 1; #define V_def_use_flowid VNET(def_use_flowid) SYSCTL_INT(_net_link_lagg, OID_AUTO, default_use_flowid, CTLFLAG_RWTUN, &VNET_NAME(def_use_flowid), 0, "Default setting for using flow id for load sharing"); /* Default value for flowid shift */ static VNET_DEFINE(int, def_flowid_shift) = 16; #define V_def_flowid_shift VNET(def_flowid_shift) SYSCTL_INT(_net_link_lagg, OID_AUTO, default_flowid_shift, CTLFLAG_RWTUN, &VNET_NAME(def_flowid_shift), 0, "Default setting for flowid shift for load sharing"); static void vnet_lagg_init(const void *unused __unused) { LAGG_LIST_LOCK_INIT(); SLIST_INIT(&V_lagg_list); V_lagg_cloner = if_clone_simple(laggname, lagg_clone_create, lagg_clone_destroy, 0); } VNET_SYSINIT(vnet_lagg_init, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY, vnet_lagg_init, NULL); static void vnet_lagg_uninit(const void *unused __unused) { if_clone_detach(V_lagg_cloner); LAGG_LIST_LOCK_DESTROY(); } VNET_SYSUNINIT(vnet_lagg_uninit, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY, vnet_lagg_uninit, NULL); static int lagg_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: 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); lagg_input_p = NULL; lagg_linkstate_p = NULL; 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); if (lagg_protos[pr].pr_attach != NULL) 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; if (lagg_protos[pr].pr_detach != NULL) lagg_protos[pr].pr_detach(sc); else LAGG_WUNLOCK(sc); } static int lagg_proto_start(struct lagg_softc *sc, struct mbuf *m) { return (lagg_protos[sc->sc_proto].pr_start(sc, m)); } static struct mbuf * lagg_proto_input(struct lagg_softc *sc, struct lagg_port *lp, struct mbuf *m) { return (lagg_protos[sc->sc_proto].pr_input(sc, lp, m)); } static int lagg_proto_addport(struct lagg_softc *sc, struct lagg_port *lp) { if (lagg_protos[sc->sc_proto].pr_addport == NULL) return (0); else return (lagg_protos[sc->sc_proto].pr_addport(lp)); } static void lagg_proto_delport(struct lagg_softc *sc, struct lagg_port *lp) { if (lagg_protos[sc->sc_proto].pr_delport != NULL) lagg_protos[sc->sc_proto].pr_delport(lp); } static void lagg_proto_linkstate(struct lagg_softc *sc, struct lagg_port *lp) { if (lagg_protos[sc->sc_proto].pr_linkstate != NULL) lagg_protos[sc->sc_proto].pr_linkstate(lp); } static void lagg_proto_init(struct lagg_softc *sc) { if (lagg_protos[sc->sc_proto].pr_init != NULL) lagg_protos[sc->sc_proto].pr_init(sc); } static void lagg_proto_stop(struct lagg_softc *sc) { if (lagg_protos[sc->sc_proto].pr_stop != NULL) lagg_protos[sc->sc_proto].pr_stop(sc); } static void lagg_proto_lladdr(struct lagg_softc *sc) { if (lagg_protos[sc->sc_proto].pr_lladdr != NULL) lagg_protos[sc->sc_proto].pr_lladdr(sc); } static void lagg_proto_request(struct lagg_softc *sc, void *v) { if (lagg_protos[sc->sc_proto].pr_request != NULL) lagg_protos[sc->sc_proto].pr_request(sc, v); } static void lagg_proto_portreq(struct lagg_softc *sc, struct lagg_port *lp, void *v) { if (lagg_protos[sc->sc_proto].pr_portreq != NULL) lagg_protos[sc->sc_proto].pr_portreq(lp, v); } /* * 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; 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); } /* * 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; 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); } 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 */ 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); } if (V_def_use_flowid) sc->sc_opts |= LAGG_OPT_USE_FLOWID; sc->flowid_shift = V_def_flowid_shift; /* Hash all layers by default */ sc->sc_flags = MBUF_HASHFLAG_L2|MBUF_HASHFLAG_L3|MBUF_HASHFLAG_L4; lagg_proto_attach(sc, LAGG_PROTO_DEFAULT); LAGG_LOCK_INIT(sc); SLIST_INIT(&sc->sc_ports); TASK_INIT(&sc->sc_lladdr_task, 0, lagg_port_setlladdr, sc); /* 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_get_counter = lagg_get_counter; 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 */ LAGG_LIST_LOCK(); SLIST_INSERT_HEAD(&V_lagg_list, sc, sc_entries); LAGG_LIST_UNLOCK(); 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); LAGG_UNLOCK_ASSERT(sc); ifmedia_removeall(&sc->sc_media); ether_ifdetach(ifp); if_free(ifp); LAGG_LIST_LOCK(); SLIST_REMOVE(&V_lagg_list, sc, lagg_softc, sc_entries); LAGG_LIST_UNLOCK(); taskqueue_drain(taskqueue_swi, &sc->sc_lladdr_task); LAGG_LOCK_DESTROY(sc); free(sc, M_DEVBUF); } /* * Set link-layer address on the lagg interface itself. * * Set noinline to be dtrace-friendly */ static __noinline void lagg_lladdr(struct lagg_softc *sc, uint8_t *lladdr) { struct ifnet *ifp = sc->sc_ifp; struct lagg_port lp; if (memcmp(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN) == 0) return; LAGG_WLOCK_ASSERT(sc); /* * Set the link layer address on the lagg interface. * lagg_proto_lladdr() notifies the MAC change to * the aggregation protocol. iflladdr_event handler which * may trigger gratuitous ARPs for INET will be handled in * a taskqueue. */ bcopy(lladdr, IF_LLADDR(ifp), ETHER_ADDR_LEN); lagg_proto_lladdr(sc); /* * Send notification request for lagg interface * itself. Note that new lladdr is already set. */ bzero(&lp, sizeof(lp)); lp.lp_ifp = sc->sc_ifp; lp.lp_softc = sc; /* Do not request lladdr change */ lagg_port_lladdr(&lp, lladdr, LAGG_LLQTYPE_VIRT); } 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); } } /* * Enqueue interface lladdr notification. * If request is already queued, it is updated. * If setting lladdr is also desired, @do_change has to be set to 1. * * Set noinline to be dtrace-friendly */ static __noinline void lagg_port_lladdr(struct lagg_port *lp, uint8_t *lladdr, lagg_llqtype llq_type) { struct lagg_softc *sc = lp->lp_softc; struct ifnet *ifp = lp->lp_ifp; struct lagg_llq *llq; LAGG_WLOCK_ASSERT(sc); /* * Do not enqueue requests where lladdr is the same for * "physical" interfaces (e.g. ports in lagg) */ if (llq_type == LAGG_LLQTYPE_PHYS && memcmp(IF_LLADDR(ifp), lladdr, 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) { /* Update lladdr, it may have changed */ bcopy(lladdr, llq->llq_lladdr, ETHER_ADDR_LEN); return; } } llq = malloc(sizeof(struct lagg_llq), M_DEVBUF, M_NOWAIT | M_ZERO); if (llq == NULL) /* XXX what to do */ return; llq->llq_ifp = ifp; llq->llq_type = llq_type; bcopy(lladdr, llq->llq_lladdr, ETHER_ADDR_LEN); /* XXX: We should insert to tail */ 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. * * Set noinline to be dtrace-friendly */ static __noinline void lagg_port_setlladdr(void *arg, int pending) { struct lagg_softc *sc = (struct lagg_softc *)arg; struct lagg_llq *llq, *head; struct ifnet *ifp; /* 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; CURVNET_SET(ifp->if_vnet); /* * Set the link layer address on the laggport interface. * Note that if_setlladdr() or iflladdr_event handler * may result in arp transmission / lltable updates. */ if (llq->llq_type == LAGG_LLQTYPE_PHYS) if_setlladdr(ifp, llq->llq_lladdr, ETHER_ADDR_LEN); else EVENTHANDLER_INVOKE(iflladdr_event, ifp); CURVNET_RESTORE(); 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, *tlp; int error, i; uint64_t *pval; 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 && ifp->if_type != IFT_L2VLAN) return (EPROTONOSUPPORT); /* 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 */ LAGG_LIST_LOCK(); SLIST_FOREACH(sc_ptr, &V_lagg_list, sc_entries) { if (ifp == sc_ptr->sc_ifp) { LAGG_LIST_UNLOCK(); 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) { LAGG_LIST_UNLOCK(); free(lp, M_DEVBUF); return (E2BIG); } #endif } } LAGG_LIST_UNLOCK(); /* 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; /* First port in lagg. Update/notify lagg lladdress */ lagg_lladdr(sc, IF_LLADDR(ifp)); } else { /* * Update link layer address for this port and * send notifications to other subsystems. */ lagg_port_lladdr(lp, IF_LLADDR(sc->sc_ifp), LAGG_LLQTYPE_PHYS); } /* * Insert into the list of ports. * Keep ports sorted by if_index. It is handy, when configuration * is predictable and `ifconfig laggN create ...` command * will lead to the same result each time. */ SLIST_FOREACH(tlp, &sc->sc_ports, lp_entries) { if (tlp->lp_ifp->if_index < ifp->if_index && ( SLIST_NEXT(tlp, lp_entries) == NULL || SLIST_NEXT(tlp, lp_entries)->lp_ifp->if_index > ifp->if_index)) break; } if (tlp != NULL) SLIST_INSERT_AFTER(tlp, lp, lp_entries); else SLIST_INSERT_HEAD(&sc->sc_ports, lp, lp_entries); sc->sc_count++; /* Update lagg capabilities */ lagg_capabilities(sc); lagg_linkstate(sc); /* Read port counters */ pval = lp->port_counters.val; for (i = 0; i < IFCOUNTERS; i++, pval++) *pval = ifp->if_get_counter(ifp, i); /* Add multicast addresses and interface flags to this port */ lagg_ether_cmdmulti(lp, 1); lagg_setflags(lp, 1); if ((error = lagg_proto_addport(sc, lp)) != 0) { /* Remove the port, without calling pr_delport. */ lagg_port_destroy(lp, 0); return (error); } return (0); } #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 rundelport) { struct lagg_softc *sc = lp->lp_softc; struct lagg_port *lp_ptr, *lp0; struct lagg_llq *llq; struct ifnet *ifp = lp->lp_ifp; uint64_t *pval, vdiff; int i; LAGG_WLOCK_ASSERT(sc); if (rundelport) lagg_proto_delport(sc, 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, LAGG_LLQTYPE_PHYS); } /* Restore interface */ ifp->if_type = lp->lp_iftype; ifp->if_ioctl = lp->lp_ioctl; ifp->if_output = lp->lp_output; ifp->if_lagg = NULL; /* Update detached port counters */ pval = lp->port_counters.val; for (i = 0; i < IFCOUNTERS; i++, pval++) { vdiff = ifp->if_get_counter(ifp, i) - *pval; sc->detached_counters.val[i] += vdiff; } /* 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 ((lp0 = SLIST_FIRST(&sc->sc_ports)) == NULL) { bzero(&lladdr, ETHER_ADDR_LEN); } else { bcopy(lp0->lp_lladdr, lladdr, ETHER_ADDR_LEN); } lagg_lladdr(sc, lladdr); /* Mark lp0 as new primary */ sc->sc_primary = lp0; /* * Enqueue lladdr update/notification for each port * (new primary needs update as well, to switch from * old lladdr to its 'real' one). */ SLIST_FOREACH(lp_ptr, &sc->sc_ports, lp_entries) lagg_port_lladdr(lp_ptr, lladdr, LAGG_LLQTYPE_PHYS); } /* 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); } /* * Requests counter @cnt data. * * Counter value is calculated the following way: * 1) for each port, sum difference between current and "initial" measurements. * 2) add lagg logical interface counters. * 3) add data from detached_counters array. * * We also do the following things on ports attach/detach: * 1) On port attach we store all counters it has into port_counter array. * 2) On port detach we add the different between "initial" and * current counters data to detached_counters array. */ static uint64_t lagg_get_counter(struct ifnet *ifp, ift_counter cnt) { struct lagg_softc *sc; struct lagg_port *lp; struct ifnet *lpifp; struct rm_priotracker tracker; uint64_t newval, oldval, vsum; /* Revise this when we've got non-generic counters. */ KASSERT(cnt < IFCOUNTERS, ("%s: invalid cnt %d", __func__, cnt)); sc = (struct lagg_softc *)ifp->if_softc; LAGG_RLOCK(sc, &tracker); vsum = 0; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { /* Saved attached value */ oldval = lp->port_counters.val[cnt]; /* current value */ lpifp = lp->lp_ifp; newval = lpifp->if_get_counter(lpifp, cnt); /* Calculate diff and save new */ vsum += newval - oldval; } /* * Add counter data which might be added by upper * layer protocols operating on logical interface. */ vsum += if_get_counter_default(ifp, cnt); /* * Add counter data from detached ports counters */ vsum += sc->detached_counters.val[cnt]; LAGG_RUNLOCK(sc, &tracker); return (vsum); } /* * 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; lagg_proto_portreq(sc, 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_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 ifnet *ifp = sc->sc_ifp; struct lagg_port *lp; if (ifp->if_drv_flags & IFF_DRV_RUNNING) return; LAGG_WLOCK(sc); ifp->if_drv_flags |= IFF_DRV_RUNNING; /* * Update the port lladdrs if needed. * This might be if_setlladdr() notification * that lladdr has been changed. */ SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) lagg_port_lladdr(lp, IF_LLADDR(ifp), LAGG_LLQTYPE_PHYS); lagg_proto_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; lagg_proto_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_reqopts *ro = (struct lagg_reqopts *)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; lagg_proto_request(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_UNLOCK_ASSERT(sc); lagg_proto_attach(sc, ra->ra_proto); break; case SIOCGLAGGOPTS: ro->ro_opts = sc->sc_opts; if (sc->sc_proto == LAGG_PROTO_LACP) { struct lacp_softc *lsc; lsc = (struct lacp_softc *)sc->sc_psc; if (lsc->lsc_debug.lsc_tx_test != 0) ro->ro_opts |= LAGG_OPT_LACP_TXTEST; if (lsc->lsc_debug.lsc_rx_test != 0) ro->ro_opts |= LAGG_OPT_LACP_RXTEST; if (lsc->lsc_strict_mode != 0) ro->ro_opts |= LAGG_OPT_LACP_STRICT; if (lsc->lsc_fast_timeout != 0) ro->ro_opts |= LAGG_OPT_LACP_TIMEOUT; ro->ro_active = sc->sc_active; } else { ro->ro_active = 0; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) ro->ro_active += LAGG_PORTACTIVE(lp); } + ro->ro_bkt = sc->sc_bkt; ro->ro_flapping = sc->sc_flapping; ro->ro_flowid_shift = sc->flowid_shift; break; case SIOCSLAGGOPTS: + if (sc->sc_proto == LAGG_PROTO_ROUNDROBIN) { + if (ro->ro_bkt == 0) + sc->sc_bkt = 1; // Minimum 1 packet per iface. + else + sc->sc_bkt = ro->ro_bkt; + } error = priv_check(td, PRIV_NET_LAGG); if (error) break; if (ro->ro_opts == 0) break; /* * Set options. LACP options are stored in sc->sc_psc, * not in sc_opts. */ int valid, lacp; switch (ro->ro_opts) { case LAGG_OPT_USE_FLOWID: case -LAGG_OPT_USE_FLOWID: case LAGG_OPT_FLOWIDSHIFT: valid = 1; lacp = 0; break; case LAGG_OPT_LACP_TXTEST: case -LAGG_OPT_LACP_TXTEST: case LAGG_OPT_LACP_RXTEST: case -LAGG_OPT_LACP_RXTEST: case LAGG_OPT_LACP_STRICT: case -LAGG_OPT_LACP_STRICT: case LAGG_OPT_LACP_TIMEOUT: case -LAGG_OPT_LACP_TIMEOUT: valid = lacp = 1; break; default: valid = lacp = 0; break; } LAGG_WLOCK(sc); + if (valid == 0 || (lacp == 1 && sc->sc_proto != LAGG_PROTO_LACP)) { /* Invalid combination of options specified. */ error = EINVAL; LAGG_WUNLOCK(sc); break; /* Return from SIOCSLAGGOPTS. */ } /* * Store new options into sc->sc_opts except for * FLOWIDSHIFT and LACP options. */ if (lacp == 0) { if (ro->ro_opts == LAGG_OPT_FLOWIDSHIFT) sc->flowid_shift = ro->ro_flowid_shift; else if (ro->ro_opts > 0) sc->sc_opts |= ro->ro_opts; else sc->sc_opts &= ~ro->ro_opts; } else { struct lacp_softc *lsc; struct lacp_port *lp; lsc = (struct lacp_softc *)sc->sc_psc; switch (ro->ro_opts) { case LAGG_OPT_LACP_TXTEST: lsc->lsc_debug.lsc_tx_test = 1; break; case -LAGG_OPT_LACP_TXTEST: lsc->lsc_debug.lsc_tx_test = 0; break; case LAGG_OPT_LACP_RXTEST: lsc->lsc_debug.lsc_rx_test = 1; break; case -LAGG_OPT_LACP_RXTEST: lsc->lsc_debug.lsc_rx_test = 0; break; case LAGG_OPT_LACP_STRICT: lsc->lsc_strict_mode = 1; break; case -LAGG_OPT_LACP_STRICT: lsc->lsc_strict_mode = 0; break; case LAGG_OPT_LACP_TIMEOUT: LACP_LOCK(lsc); LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) lp->lp_state |= LACP_STATE_TIMEOUT; LACP_UNLOCK(lsc); lsc->lsc_fast_timeout = 1; break; case -LAGG_OPT_LACP_TIMEOUT: LACP_LOCK(lsc); LIST_FOREACH(lp, &lsc->lsc_ports, lp_next) lp->lp_state &= ~LACP_STATE_TIMEOUT; LACP_UNLOCK(lsc); lsc->lsc_fast_timeout = 0; break; } } LAGG_WUNLOCK(sc); break; case SIOCGLAGGFLAGS: rf->rf_flags = 0; LAGG_RLOCK(sc, &tracker); if (sc->sc_flags & MBUF_HASHFLAG_L2) rf->rf_flags |= LAGG_F_HASHL2; if (sc->sc_flags & MBUF_HASHFLAG_L3) rf->rf_flags |= LAGG_F_HASHL3; if (sc->sc_flags & MBUF_HASHFLAG_L4) rf->rf_flags |= LAGG_F_HASHL4; LAGG_RUNLOCK(sc, &tracker); 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 = 0; if (rf->rf_flags & LAGG_F_HASHL2) sc->sc_flags |= MBUF_HASHFLAG_L2; if (rf->rf_flags & LAGG_F_HASHL3) sc->sc_flags |= MBUF_HASHFLAG_L3; if (rf->rf_flags & LAGG_F_HASHL4) sc->sc_flags |= MBUF_HASHFLAG_L4; 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; } #ifdef INET6 /* * A laggport 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 laggport * interface which has inet6 addresses triggers * removal of all inet6 addresses on the member * interface. */ if (in6ifa_llaonifp(tpif)) { in6_ifdetach(tpif); 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", tpif->if_xname); } #endif 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)) { 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); if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); return (ENXIO); } ETHER_BPF_MTAP(ifp, m); error = lagg_proto_start(sc, m); LAGG_RUNLOCK(sc, &tracker); if (error != 0) if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 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); if (lp->lp_detaching != 0) { m_freem(m); m = NULL; } else m = lagg_proto_input(sc, lp, m); if (m != NULL) { 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_ifp->if_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_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); lagg_proto_linkstate(sc, 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); } 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_capabilities = IFCAP_LAGG_FULLDUPLEX; sc->sc_seq = 0; + sc->sc_bkt_count = sc->sc_bkt; } 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); + if (sc->sc_bkt_count == 0 && sc->sc_bkt > 0) + sc->sc_bkt_count = sc->sc_bkt; + + if (sc->sc_bkt > 0) { + atomic_subtract_int(&sc->sc_bkt_count, 1); + if (atomic_cmpset_int(&sc->sc_bkt_count, 0, sc->sc_bkt)) + p = atomic_fetchadd_32(&sc->sc_seq, 1); + else + p = sc->sc_seq; + } else + 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 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; SLIST_FOREACH(lp, &sc->sc_ports, lp_entries) { if (!LAGG_PORTACTIVE(lp)) continue; active_ports++; 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, m); if (ret != 0) errors++; if (errors == 0) return (ret); return (0); } static struct mbuf* lagg_bcast_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); } /* * Active failover */ 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 || V_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_capabilities = IFCAP_LAGG_FULLDUPLEX; lb->lb_key = m_ether_tcpip_hash_init(); 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_ifp->if_xname, 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->sc_opts & LAGG_OPT_USE_FLOWID) && M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) p = m->m_pkthdr.flowid >> sc->flowid_shift; else p = m_ether_tcpip_hash(sc->sc_flags, 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; 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); } Index: head/sys/net/if_lagg.h =================================================================== --- head/sys/net/if_lagg.h (revision 294614) +++ head/sys/net/if_lagg.h (revision 294615) @@ -1,292 +1,295 @@ /* $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_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 }, \ { "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) struct lagg_reqopts { char ro_ifname[IFNAMSIZ]; /* name of the lagg */ int ro_opts; /* Option bitmap */ #define LAGG_OPT_NONE 0x00 #define LAGG_OPT_USE_FLOWID 0x01 /* enable use of flowid */ /* Pseudo flags which are used in ro_opts but not stored into sc_opts. */ #define LAGG_OPT_FLOWIDSHIFT 0x02 /* set flowid shift */ #define LAGG_OPT_FLOWIDSHIFT_MASK 0x1f /* flowid is uint32_t */ #define LAGG_OPT_LACP_STRICT 0x10 /* LACP strict mode */ #define LAGG_OPT_LACP_TXTEST 0x20 /* LACP debug: txtest */ #define LAGG_OPT_LACP_RXTEST 0x40 /* LACP debug: rxtest */ #define LAGG_OPT_LACP_TIMEOUT 0x80 /* LACP timeout */ u_int ro_count; /* number of ports */ u_int ro_active; /* active port count */ u_int ro_flapping; /* number of flapping */ int ro_flowid_shift; /* shift the flowid */ + uint32_t ro_bkt; /* packet bucket for roundrobin */ }; #define SIOCGLAGGOPTS _IOWR('i', 152, struct lagg_reqopts) #define SIOCSLAGGOPTS _IOW('i', 153, struct lagg_reqopts) #define LAGG_OPT_BITS "\020\001USE_FLOWID\005LACP_STRICT" \ "\006LACP_TXTEST\007LACP_RXTEST" #ifdef _KERNEL /* * Internal kernel part */ #define LAGG_PORTACTIVE(_tp) ( \ ((_tp)->lp_ifp->if_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; }; typedef enum { LAGG_LLQTYPE_PHYS = 0, /* Task related to physical (underlying) port */ LAGG_LLQTYPE_VIRT, /* Task related to lagg interface itself */ } lagg_llqtype; /* List of interfaces to have the MAC address modified */ struct lagg_llq { struct ifnet *llq_ifp; uint8_t llq_lladdr[ETHER_ADDR_LEN]; lagg_llqtype llq_type; SLIST_ENTRY(lagg_llq) llq_entries; }; struct lagg_counters { uint64_t val[IFCOUNTERS]; }; struct lagg_softc { struct ifnet *sc_ifp; /* virtual interface */ struct rmlock sc_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 */ void *sc_psc; /* protocol data */ uint32_t sc_seq; /* sequence counter */ uint32_t sc_flags; 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 */ eventhandler_tag vlan_attach; eventhandler_tag vlan_detach; struct callout sc_callout; u_int sc_opts; int flowid_shift; /* shift the flowid */ + uint32_t sc_bkt; /* packates bucket for roundrobin */ + uint32_t sc_bkt_count; /* packates bucket count for roundrobin */ struct lagg_counters detached_counters; /* detached ports sum */ }; 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 */ 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 *); struct lagg_counters port_counters; /* ifp counters copy */ 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_UNLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_UNLOCKED) 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 *); SYSCTL_DECL(_net_link_lagg); #endif /* _KERNEL */ #endif /* _NET_LAGG_H */