/* $OpenBSD: if_trunk.c,v 1.8 2005/10/03 01:46:47 reyk Exp $ */ /* * Copyright (c) 2005 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. */ #include "bpfilter.h" #include "trunk.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #ifdef INET #include #include #endif #include SLIST_HEAD(__trhead, trunk_softc) trunk_list; /* list of trunks */ extern struct ifaddr **ifnet_addrs; extern int ifqmaxlen; void trunkattach(int); int trunk_clone_create(struct if_clone *, int); int trunk_clone_destroy(struct ifnet *); void trunk_lladdr(struct arpcom *, u_int8_t *); int trunk_capabilities(struct trunk_softc *); void trunk_port_lladdr(struct trunk_port *, u_int8_t *); int trunk_port_create(struct trunk_softc *, struct ifnet *); int trunk_port_destroy(struct trunk_port *); void trunk_port_watchdog(struct ifnet *); int trunk_port_ioctl(struct ifnet *, u_long, caddr_t); struct trunk_port *trunk_port_get(struct trunk_softc *, struct ifnet *); int trunk_port_checkstacking(struct trunk_softc *); void trunk_port2req(struct trunk_port *, struct trunk_reqport *); int trunk_ioctl(struct ifnet *, u_long, caddr_t); int trunk_ether_addmulti(struct trunk_softc *, struct ifreq *); int trunk_ether_delmulti(struct trunk_softc *, struct ifreq *); void trunk_ether_purgemulti(struct trunk_softc *); int trunk_ether_cmdmulti(struct trunk_port *, u_long); int trunk_ioctl_allports(struct trunk_softc *, u_long, caddr_t); void trunk_start(struct ifnet *); void trunk_watchdog(struct ifnet *); int trunk_media_change(struct ifnet *); void trunk_media_status(struct ifnet *, struct ifmediareq *); struct trunk_port *trunk_link_active(struct trunk_softc *, struct trunk_port *); struct if_clone trunk_cloner = IF_CLONE_INITIALIZER("trunk", trunk_clone_create, trunk_clone_destroy); /* Simple round robin */ int trunk_rr_attach(struct trunk_softc *); int trunk_rr_detach(struct trunk_softc *); void trunk_rr_port_destroy(struct trunk_port *); int trunk_rr_start(struct trunk_softc *, struct mbuf *); int trunk_rr_input(struct trunk_softc *, struct trunk_port *, struct ether_header *, struct mbuf *); /* Active failover */ int trunk_fail_attach(struct trunk_softc *); int trunk_fail_detach(struct trunk_softc *); int trunk_fail_start(struct trunk_softc *, struct mbuf *); int trunk_fail_input(struct trunk_softc *, struct trunk_port *, struct ether_header *, struct mbuf *); /* Trunk protocol table */ static const struct { enum trunk_proto ti_proto; int (*ti_attach)(struct trunk_softc *); } trunk_protos[] = { { TRUNK_PROTO_ROUNDROBIN, trunk_rr_attach }, { TRUNK_PROTO_FAILOVER, trunk_fail_attach }, { TRUNK_PROTO_NONE, } }; void trunkattach(int count) { SLIST_INIT(&trunk_list); if_clone_attach(&trunk_cloner); } int trunk_clone_create(struct if_clone *ifc, int unit) { struct trunk_softc *tr; struct ifnet *ifp; int i, error = 0; if ((tr = malloc(sizeof(struct trunk_softc), M_DEVBUF, M_NOWAIT)) == NULL) return (ENOMEM); bzero(tr, sizeof(struct trunk_softc)); tr->tr_unit = unit; tr->tr_proto = TRUNK_PROTO_NONE; for (i = 0; trunk_protos[i].ti_proto != TRUNK_PROTO_NONE; i++) { if (trunk_protos[i].ti_proto == TRUNK_PROTO_DEFAULT) { tr->tr_proto = trunk_protos[i].ti_proto; if ((error = trunk_protos[i].ti_attach(tr)) != 0) { free(tr, M_DEVBUF); return (error); } break; } } SLIST_INIT(&tr->tr_ports); /* Initialise pseudo media types */ ifmedia_init(&tr->tr_media, 0, trunk_media_change, trunk_media_status); ifmedia_add(&tr->tr_media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&tr->tr_media, IFM_ETHER | IFM_AUTO); ifp = &tr->tr_ac.ac_if; ifp->if_carp = NULL; ifp->if_type = IFT_ETHER; ifp->if_softc = tr; ifp->if_start = trunk_start; ifp->if_watchdog = trunk_watchdog; ifp->if_ioctl = trunk_ioctl; ifp->if_output = ether_output; ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; ifp->if_capabilities = trunk_capabilities(tr); IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); IFQ_SET_READY(&ifp->if_snd); snprintf(ifp->if_xname, sizeof(ifp->if_xname), "%s%d", ifc->ifc_name, unit); /* * Attach as an ordinary ethernet device, childs will be attached * as special device IFT_IEEE8023ADLAG. */ if_attach(ifp); ether_ifattach(ifp); /* Insert into the global list of trunks */ SLIST_INSERT_HEAD(&trunk_list, tr, tr_entries); return (0); } int trunk_clone_destroy(struct ifnet *ifp) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; struct trunk_port *tp; int error, s; /* Remove any multicast groups that we may have joined. */ trunk_ether_purgemulti(tr); s = splnet(); /* Shutdown and remove trunk ports, return on error */ while ((tp = SLIST_FIRST(&tr->tr_ports)) != NULL) { if ((error = trunk_port_destroy(tp)) != 0) { splx(s); return (error); } } ifmedia_delete_instance(&tr->tr_media, IFM_INST_ANY); #if NBPFILTER > 0 bpfdetach(ifp); #endif ether_ifdetach(ifp); if_detach(ifp); SLIST_REMOVE(&trunk_list, tr, trunk_softc, tr_entries); free(tr, M_DEVBUF); splx(s); return (0); } void trunk_lladdr(struct arpcom *ac, u_int8_t *lladdr) { struct ifnet *ifp = &ac->ac_if; struct ifaddr *ifa; struct sockaddr_dl *sdl; ifa = ifnet_addrs[ifp->if_index]; sdl = (struct sockaddr_dl *)ifa->ifa_addr; sdl->sdl_type = IFT_ETHER; sdl->sdl_alen = ETHER_ADDR_LEN; bcopy(lladdr, LLADDR(sdl), ETHER_ADDR_LEN); bcopy(lladdr, ac->ac_enaddr, ETHER_ADDR_LEN); } int trunk_capabilities(struct trunk_softc *tr) { struct trunk_port *tp; int cap = ~0; SLIST_FOREACH(tp, &tr->tr_ports, tp_entries) cap &= tp->tp_capabilities; if (tr->tr_ifflags & IFF_DEBUG) { printf("%s: capabilities 0x%08x\n", tr->tr_ifname, cap == ~0 ? 0 : cap); } return (cap == ~0 ? 0 : cap); } void trunk_port_lladdr(struct trunk_port *tp, u_int8_t *lladdr) { struct ifnet *ifp = tp->tp_if; struct ifaddr *ifa; struct ifreq ifr; /* Set the link layer address */ trunk_lladdr((struct arpcom *)ifp, lladdr); /* Reset the port to update the lladdr */ if (ifp->if_flags & IFF_UP) { int s = splimp(); ifp->if_flags &= ~IFF_UP; (*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t)&ifr); ifp->if_flags |= IFF_UP; (*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t)&ifr); splx(s); TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) { if (ifa->ifa_addr != NULL && ifa->ifa_addr->sa_family == AF_INET) arp_ifinit((struct arpcom *)ifp, ifa); } } } int trunk_port_create(struct trunk_softc *tr, struct ifnet *ifp) { struct trunk_softc *tr_ptr; struct trunk_port *tp; int error = 0; /* Limit the maximal number of trunk ports */ if (tr->tr_count >= TRUNK_MAX_PORTS) return (ENOSPC); /* New trunk port has to be in an idle state */ if (ifp->if_flags & IFF_OACTIVE) return (EBUSY); /* Check if port has already been associated to a trunk */ if (trunk_port_get(NULL, ifp) != NULL) return (EBUSY); /* XXX Disallow non-ethernet interfaces (this should be any of 802) */ if (ifp->if_type != IFT_ETHER) return (EPROTONOSUPPORT); if ((error = ifpromisc(ifp, 1)) != 0) return (error); if ((tp = malloc(sizeof(struct trunk_port), M_DEVBUF, M_NOWAIT)) == NULL) return (ENOMEM); bzero(tp, sizeof(struct trunk_port)); /* Check if port is a stacked trunk */ SLIST_FOREACH(tr_ptr, &trunk_list, tr_entries) { if (ifp == &tr_ptr->tr_ac.ac_if) { tp->tp_flags |= TRUNK_PORT_STACK; if (trunk_port_checkstacking(tr_ptr) >= TRUNK_MAX_STACKING) { free(tp, M_DEVBUF); return (E2BIG); } } } /* Change the interface type */ tp->tp_iftype = ifp->if_type; ifp->if_type = IFT_IEEE8023ADLAG; ifp->if_tp = (caddr_t)tp; tp->tp_watchdog = ifp->if_watchdog; ifp->if_watchdog = trunk_port_watchdog; tp->tp_ioctl = ifp->if_ioctl; ifp->if_ioctl = trunk_port_ioctl; tp->tp_if = ifp; tp->tp_trunk = (caddr_t)tr; /* Save port link layer address */ bcopy(((struct arpcom *)ifp)->ac_enaddr, tp->tp_lladdr, ETHER_ADDR_LEN); if (SLIST_EMPTY(&tr->tr_ports)) { tr->tr_primary = tp; tp->tp_flags |= TRUNK_PORT_MASTER; trunk_lladdr(&tr->tr_ac, tp->tp_lladdr); } /* Update link layer address for this port */ trunk_port_lladdr(tp, tr->tr_primary->tp_lladdr); /* Insert into the list of ports */ SLIST_INSERT_HEAD(&tr->tr_ports, tp, tp_entries); tr->tr_count++; /* Update trunk capabilities */ tr->tr_capabilities = trunk_capabilities(tr); /* Add multicast addresses to this port */ trunk_ether_cmdmulti(tp, SIOCADDMULTI); if (tr->tr_port_create != NULL) error = (*tr->tr_port_create)(tp); return (error); } int trunk_port_checkstacking(struct trunk_softc *tr) { struct trunk_softc *tr_ptr; struct trunk_port *tp; int m = 0; SLIST_FOREACH(tp, &tr->tr_ports, tp_entries) { if (tp->tp_flags & TRUNK_PORT_STACK) { tr_ptr = (struct trunk_softc *)tp->tp_if->if_softc; m = MAX(m, trunk_port_checkstacking(tr_ptr)); } } return (m + 1); } int trunk_port_destroy(struct trunk_port *tp) { struct trunk_softc *tr = (struct trunk_softc *)tp->tp_trunk; struct trunk_port *tp_ptr; struct ifnet *ifp = tp->tp_if; if (tr->tr_port_destroy != NULL) (*tr->tr_port_destroy)(tp); /* Remove multicast addresses from this port */ trunk_ether_cmdmulti(tp, SIOCDELMULTI); /* Port has to be down */ if (ifp->if_flags & IFF_UP) if_down(ifp); ifpromisc(ifp, 0); /* Restore interface */ ifp->if_type = tp->tp_iftype; ifp->if_watchdog = tp->tp_watchdog; ifp->if_ioctl = tp->tp_ioctl; ifp->if_tp = NULL; /* Finally, remove the port from the trunk */ SLIST_REMOVE(&tr->tr_ports, tp, trunk_port, tp_entries); tr->tr_count--; /* Update the primary interface */ if (tp == tr->tr_primary) { u_int8_t lladdr[ETHER_ADDR_LEN]; if ((tp_ptr = SLIST_FIRST(&tr->tr_ports)) == NULL) { bzero(&lladdr, ETHER_ADDR_LEN); } else { bcopy(((struct arpcom *)tp_ptr->tp_if)->ac_enaddr, lladdr, ETHER_ADDR_LEN); tp_ptr->tp_flags = TRUNK_PORT_MASTER; } trunk_lladdr(&tr->tr_ac, lladdr); tr->tr_primary = tp_ptr; /* Update link layer address for each port */ SLIST_FOREACH(tp_ptr, &tr->tr_ports, tp_entries) trunk_port_lladdr(tp_ptr, lladdr); } /* Reset the port lladdr */ trunk_port_lladdr(tp, tp->tp_lladdr); free(tp, M_DEVBUF); /* Update trunk capabilities */ tr->tr_capabilities = trunk_capabilities(tr); return (0); } void trunk_port_watchdog(struct ifnet *ifp) { struct trunk_softc *tr; struct trunk_port *tp; /* Should be checked by the caller */ if (ifp->if_type != IFT_IEEE8023ADLAG) return; if ((tp = (struct trunk_port *)ifp->if_tp) == NULL || (tr = (struct trunk_softc *)tp->tp_trunk) == NULL) return; if (tp->tp_watchdog != NULL) (*tp->tp_watchdog)(ifp); } int trunk_port_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct trunk_reqport *rp = (struct trunk_reqport *)data; struct trunk_softc *tr; struct trunk_port *tp; int s, error = 0; s = splimp(); /* Should be checked by the caller */ if (ifp->if_type != IFT_IEEE8023ADLAG || (tp = (struct trunk_port *)ifp->if_tp) == NULL || (tr = (struct trunk_softc *)tp->tp_trunk) == NULL) goto fallback; switch (cmd) { case SIOCGTRUNKPORT: if (rp->rp_portname[0] == '\0' || ifunit(rp->rp_portname) != ifp) { error = EINVAL; break; } /* Search in all trunks if the global flag is set */ if ((tp = trunk_port_get(rp->rp_flags & TRUNK_PORT_GLOBAL ? NULL : tr, ifp)) == NULL) { error = ENOENT; break; } trunk_port2req(tp, rp); break; default: goto fallback; } splx(s); return (error); fallback: splx(s); return ((*tp->tp_ioctl)(ifp, cmd, data)); } void trunk_port_ifdetach(struct ifnet *ifp) { struct trunk_port *tp; if ((tp = (struct trunk_port *)ifp->if_tp) == NULL) return; trunk_port_destroy(tp); } struct trunk_port * trunk_port_get(struct trunk_softc *tr, struct ifnet *ifp) { struct trunk_port *tp; struct trunk_softc *tr_ptr; if (tr != NULL) { /* Search port in specified trunk */ SLIST_FOREACH(tp, &tr->tr_ports, tp_entries) { if (tp->tp_if == ifp) return (tp); } } else { /* Search all trunks for the selected port */ SLIST_FOREACH(tr_ptr, &trunk_list, tr_entries) { SLIST_FOREACH(tp, &tr_ptr->tr_ports, tp_entries) { if (tp->tp_if == ifp) return (tp); } } } return (NULL); } void trunk_port2req(struct trunk_port *tp, struct trunk_reqport *rp) { struct trunk_softc *tr = (struct trunk_softc *)tp->tp_trunk; strlcpy(rp->rp_ifname, tr->tr_ifname, sizeof(rp->rp_ifname)); strlcpy(rp->rp_portname, tp->tp_if->if_xname, sizeof(rp->rp_portname)); rp->rp_prio = tp->tp_prio; rp->rp_flags = tp->tp_flags; if (tp->tp_link_state != LINK_STATE_DOWN) rp->rp_flags |= TRUNK_PORT_ACTIVE; } int trunk_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; struct trunk_reqall *ra = (struct trunk_reqall *)data; struct trunk_reqport *rp = (struct trunk_reqport *)data, rpbuf; struct ifreq *ifr = (struct ifreq *)data; struct ifaddr *ifa = (struct ifaddr *)data; struct trunk_port *tp; struct ifnet *tpif; int s, i, error = 0; s = splimp(); if ((error = ether_ioctl(ifp, &tr->tr_ac, cmd, data)) > 0) { splx(s); return (error); } bzero(&rpbuf, sizeof(rpbuf)); switch (cmd) { case SIOCGTRUNK: ra->ra_proto = tr->tr_proto; ra->ra_ports = i = 0; tp = SLIST_FIRST(&tr->tr_ports); while (tp && ra->ra_size >= i + sizeof(struct trunk_reqport)) { trunk_port2req(tp, &rpbuf); error = copyout(&rpbuf, (caddr_t)ra->ra_port + i, sizeof(struct trunk_reqport)); if (error) break; i += sizeof(struct trunk_reqport); ra->ra_ports++; tp = SLIST_NEXT(tp, tp_entries); } break; case SIOCSTRUNK: if ((error = suser(curproc, 0)) != 0) { error = EPERM; break; } if (ra->ra_proto >= TRUNK_PROTO_MAX) { error = EPROTONOSUPPORT; break; } if (tr->tr_proto != TRUNK_PROTO_NONE) error = tr->tr_detach(tr); if (error != 0) break; for (i = 0; i < (sizeof(trunk_protos) / sizeof(trunk_protos[0])); i++) { if (trunk_protos[i].ti_proto == ra->ra_proto) { if (tr->tr_ifflags & IFF_DEBUG) printf("%s: using proto %u\n", tr->tr_ifname, trunk_protos[i].ti_proto); tr->tr_proto = trunk_protos[i].ti_proto; if (tr->tr_proto != TRUNK_PROTO_NONE) error = trunk_protos[i].ti_attach(tr); goto out; } } error = EPROTONOSUPPORT; break; case SIOCGTRUNKPORT: if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } /* Search in all trunks if the global flag is set */ if ((tp = trunk_port_get(rp->rp_flags & TRUNK_PORT_GLOBAL ? NULL : tr, tpif)) == NULL) { error = ENOENT; break; } trunk_port2req(tp, rp); break; case SIOCSTRUNKPORT: if ((error = suser(curproc, 0)) != 0) { error = EPERM; break; } if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } error = trunk_port_create(tr, tpif); break; case SIOCSTRUNKDELPORT: if ((error = suser(curproc, 0)) != 0) { error = EPERM; break; } if (rp->rp_portname[0] == '\0' || (tpif = ifunit(rp->rp_portname)) == NULL) { error = EINVAL; break; } /* Search in all trunks if the global flag is set */ if ((tp = trunk_port_get(rp->rp_flags & TRUNK_PORT_GLOBAL ? NULL : tr, tpif)) == NULL) { error = ENOENT; break; } error = trunk_port_destroy(tp); break; case SIOCSIFADDR: ifp->if_flags |= IFF_UP; #ifdef INET if (ifa->ifa_addr->sa_family == AF_INET) arp_ifinit(&tr->tr_ac, ifa); #endif /* INET */ error = ENETRESET; break; case SIOCSIFMTU: if (ifr->ifr_mtu > ETHERMTU) { error = EINVAL; break; } ifp->if_mtu = ifr->ifr_mtu; break; case SIOCSIFFLAGS: error = ENETRESET; break; case SIOCADDMULTI: error = trunk_ether_addmulti(tr, ifr); break; case SIOCDELMULTI: error = trunk_ether_delmulti(tr, ifr); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &tr->tr_media, cmd); break; case SIOCSIFLLADDR: /* Update the port lladdrs as well */ SLIST_FOREACH(tp, &tr->tr_ports, tp_entries) trunk_port_lladdr(tp, ifr->ifr_addr.sa_data); break; default: error = EINVAL; break; } if (error == ENETRESET) { /* * We don't need a trunk init at this point but we mark the * interface as up and running or remove the running flag * if it's down. */ if (ifp->if_flags & IFF_UP) ifp->if_flags |= IFF_RUNNING; else ifp->if_flags &= ~IFF_RUNNING; error = 0; } out: splx(s); return (error); } int trunk_ether_addmulti(struct trunk_softc *tr, struct ifreq *ifr) { struct trunk_mc *mc; u_int8_t addrlo[ETHER_ADDR_LEN], addrhi[ETHER_ADDR_LEN]; int error; /* Ignore ENETRESET error code */ if ((error = ether_addmulti(ifr, &tr->tr_ac)) != ENETRESET) return (error); if ((mc = (struct trunk_mc *)malloc(sizeof(struct trunk_mc), M_DEVBUF, M_NOWAIT)) == NULL) { error = ENOMEM; goto failed; } ether_multiaddr(&ifr->ifr_addr, addrlo, addrhi); ETHER_LOOKUP_MULTI(addrlo, addrhi, &tr->tr_ac, mc->mc_enm); bcopy(&ifr->ifr_addr, &mc->mc_addr, ifr->ifr_addr.sa_len); SLIST_INSERT_HEAD(&tr->tr_mc_head, mc, mc_entries); if ((error = trunk_ioctl_allports(tr, SIOCADDMULTI, (caddr_t)ifr)) != 0) { trunk_ether_delmulti(tr, ifr); return (error); } return (error); failed: ether_delmulti(ifr, &tr->tr_ac); return (error); } int trunk_ether_delmulti(struct trunk_softc *tr, struct ifreq *ifr) { struct ether_multi *enm; struct trunk_mc *mc; u_int8_t addrlo[ETHER_ADDR_LEN], addrhi[ETHER_ADDR_LEN]; int error; if ((error = ether_multiaddr(&ifr->ifr_addr, addrlo, addrhi)) != 0) return (error); ETHER_LOOKUP_MULTI(addrlo, addrhi, &tr->tr_ac, enm); if ((error = ether_delmulti(ifr, &tr->tr_ac)) != ENETRESET) return (error); if ((error = trunk_ioctl_allports(tr, SIOCDELMULTI, (caddr_t)ifr)) != 0) { /* XXX At least one port failed to remove the address */ if (tr->tr_ifflags & IFF_DEBUG) { printf("%s: failed to remove multicast address " "on all ports\n", tr->tr_ifname); } } SLIST_FOREACH(mc, &tr->tr_mc_head, mc_entries) { if (mc->mc_enm == enm) { SLIST_REMOVE(&tr->tr_mc_head, mc, trunk_mc, mc_entries); free(mc, M_DEVBUF); break; } } return (0); } void trunk_ether_purgemulti(struct trunk_softc *tr) { struct trunk_mc *mc; struct trunk_ifreq ifs; struct ifreq *ifr = &ifs.ifreq.ifreq; while ((mc = SLIST_FIRST(&tr->tr_mc_head)) != NULL) { bcopy(&mc->mc_addr, &ifr->ifr_addr, mc->mc_addr.ss_len); /* Try to remove multicast address on all ports */ trunk_ioctl_allports(tr, SIOCDELMULTI, (caddr_t)ifr); SLIST_REMOVE(&tr->tr_mc_head, mc, trunk_mc, mc_entries); free(mc, M_DEVBUF); } } int trunk_ether_cmdmulti(struct trunk_port *tp, u_long cmd) { struct trunk_softc *tr = (struct trunk_softc *)tp->tp_trunk; struct trunk_mc *mc; struct trunk_ifreq ifs; struct ifreq *ifr = &ifs.ifreq.ifreq; int ret, error = 0; bcopy(tp->tp_ifname, ifr->ifr_name, IFNAMSIZ); SLIST_FOREACH(mc, &tr->tr_mc_head, mc_entries) { bcopy(&mc->mc_addr, &ifr->ifr_addr, mc->mc_addr.ss_len); if ((ret = tp->tp_ioctl(tp->tp_if, cmd, (caddr_t)ifr)) != 0) { if (tr->tr_ifflags & IFF_DEBUG) { printf("%s: ioctl %lu failed on %s: %d\n", tr->tr_ifname, cmd, tp->tp_ifname, ret); } /* Store last known error and continue */ error = ret; } } return (error); } int trunk_ioctl_allports(struct trunk_softc *tr, u_long cmd, caddr_t data) { struct ifreq *ifr = (struct ifreq *)data; struct trunk_port *tp; int ret, error = 0; SLIST_FOREACH(tp, &tr->tr_ports, tp_entries) { bcopy(tp->tp_ifname, ifr->ifr_name, IFNAMSIZ); if ((ret = tp->tp_ioctl(tp->tp_if, cmd, data)) != 0) { if (tr->tr_ifflags & IFF_DEBUG) { printf("%s: ioctl %lu failed on %s: %d\n", tr->tr_ifname, cmd, tp->tp_ifname, ret); } /* Store last known error and continue */ error = ret; } } return (error); } void trunk_start(struct ifnet *ifp) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; struct mbuf *m; int error = 0; for (;; error = 0) { IFQ_DEQUEUE(&ifp->if_snd, m); if (m == NULL) break; #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m); #endif if (tr->tr_proto != TRUNK_PROTO_NONE) error = (*tr->tr_start)(tr, m); else m_free(m); if (error == 0) ifp->if_opackets++; else ifp->if_oerrors++; } return; } void trunk_watchdog(struct ifnet *ifp) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; if (tr->tr_proto != TRUNK_PROTO_NONE && (*tr->tr_watchdog)(tr) != 0) { ifp->if_oerrors++; } } int trunk_input(struct ifnet *ifp, struct ether_header *eh, struct mbuf *m) { struct trunk_softc *tr; struct trunk_port *tp; struct ifnet *trifp; int error = 0; /* Should be checked by the caller */ if (ifp->if_type != IFT_IEEE8023ADLAG) { error = EPROTONOSUPPORT; goto bad; } if ((tp = (struct trunk_port *)ifp->if_tp) == NULL || (tr = (struct trunk_softc *)tp->tp_trunk) == NULL) { error = ENOENT; goto bad; } if (tr->tr_proto == TRUNK_PROTO_NONE) goto bad; trifp = &tr->tr_ac.ac_if; #if NBPFILTER > 0 if (trifp->if_bpf) bpf_mtap_hdr(trifp->if_bpf, (char *)eh, ETHER_HDR_LEN, m); #endif error = (*tr->tr_input)(tr, tp, eh, m); if (error != 0) goto bad; trifp->if_ipackets++; return (0); bad: trifp->if_ierrors++; return (error); } int trunk_media_change(struct ifnet *ifp) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; if (tr->tr_ifflags & IFF_DEBUG) printf("%s\n", __func__); /* Ignore */ return (0); } void trunk_media_status(struct ifnet *ifp, struct ifmediareq *imr) { struct trunk_softc *tr = (struct trunk_softc *)ifp->if_softc; struct trunk_port *tp; imr->ifm_status = IFM_AVALID; imr->ifm_active = IFM_ETHER | IFM_AUTO; tp = tr->tr_primary; if (tp != NULL && tp->tp_if->if_flags & IFF_UP) imr->ifm_status |= IFM_ACTIVE; } struct trunk_port * trunk_link_active(struct trunk_softc *tr, struct trunk_port *tp) { struct trunk_port *tp_next; /* * Search a port which reports an active link state. * Normally, this should be LINK_STATE_UP but not all * drivers seem to report this correctly so we assume * that LINK_STATE_DOWN is the opposite from * LINK_STATE_UNKNOWN and LINK_STATE_UP. */ if (tp == NULL) goto search; if (tp->tp_link_state != LINK_STATE_DOWN) return (tp); if ((tp_next = SLIST_NEXT(tp, tp_entries)) != NULL && tp_next->tp_link_state != LINK_STATE_DOWN) return (tp_next); search: SLIST_FOREACH(tp_next, &tr->tr_ports, tp_entries) { if (tp_next->tp_link_state != LINK_STATE_DOWN) return (tp_next); } return (NULL); } /* * Simple round robin trunking */ int trunk_rr_attach(struct trunk_softc *tr) { struct trunk_port *tp; tr->tr_detach = trunk_rr_detach; tr->tr_start = trunk_rr_start; tr->tr_input = trunk_rr_input; tr->tr_port_create = NULL; tr->tr_port_destroy = trunk_rr_port_destroy; tp = SLIST_FIRST(&tr->tr_ports); tr->tr_psc = (caddr_t)tp; return (0); } int trunk_rr_detach(struct trunk_softc *tr) { tr->tr_psc = NULL; return (0); } void trunk_rr_port_destroy(struct trunk_port *tp) { struct trunk_softc *tr = (struct trunk_softc *)tp->tp_trunk; if (tp == (struct trunk_port *)tr->tr_psc) tr->tr_psc = NULL; } int trunk_rr_start(struct trunk_softc *tr, struct mbuf *m) { struct trunk_port *tp = (struct trunk_port *)tr->tr_psc, *tp_next; struct ifnet *ifp; int error = 0; if (tp == NULL && (tp = trunk_link_active(tr, NULL)) == NULL) return (ENOENT); /* Send mbuf */ ifp = tp->tp_if; IFQ_ENQUEUE(&ifp->if_snd, m, NULL, error); if (error) return (error); if ((ifp->if_flags & IFF_OACTIVE) == 0) (*ifp->if_start)(ifp); ifp->if_obytes += m->m_pkthdr.len; if (m->m_flags & M_MCAST) ifp->if_omcasts++; /* Get next active port */ tp_next = trunk_link_active(tr, SLIST_NEXT(tp, tp_entries)); tr->tr_psc = (caddr_t)tp_next; return (error); } int trunk_rr_input(struct trunk_softc *tr, struct trunk_port *tp, struct ether_header *eh, struct mbuf *m) { struct ifnet *ifp = &tr->tr_ac.ac_if; /* Just pass in the packet to our trunk device */ m->m_pkthdr.rcvif = ifp; return (0); } /* * Active failover */ int trunk_fail_attach(struct trunk_softc *tr) { tr->tr_detach = trunk_fail_detach; tr->tr_start = trunk_fail_start; tr->tr_input = trunk_fail_input; tr->tr_port_create = NULL; tr->tr_port_destroy = NULL; return (0); } int trunk_fail_detach(struct trunk_softc *tr) { return (0); } int trunk_fail_start(struct trunk_softc *tr, struct mbuf *m) { struct trunk_port *tp; struct ifnet *ifp; int error = 0; /* Use the master port if active or the next available port */ if ((tp = trunk_link_active(tr, tr->tr_primary)) == NULL) return (ENOENT); /* Send mbuf */ ifp = tp->tp_if; IFQ_ENQUEUE(&ifp->if_snd, m, NULL, error); if (error) return (error); if ((ifp->if_flags & IFF_OACTIVE) == 0) (*ifp->if_start)(ifp); ifp->if_obytes += m->m_pkthdr.len; if (m->m_flags & M_MCAST) ifp->if_omcasts++; return (error); } int trunk_fail_input(struct trunk_softc *tr, struct trunk_port *tp, struct ether_header *eh, struct mbuf *m) { struct ifnet *ifp = &tr->tr_ac.ac_if; /* Just pass in the packet to our trunk device */ m->m_pkthdr.rcvif = ifp; return (0); }