From 353729f513aa6a1f9e7f66083a0f9d2117fe2be5 Mon Sep 17 00:00:00 2001 From: Ondrej Zajicek Date: Thu, 11 Feb 2010 10:23:35 +0100 Subject: Temporary OSPF commit - socket changes. --- proto/ospf/iface.c | 217 +++++++++++++++++++++++++++-------------------------- 1 file changed, 109 insertions(+), 108 deletions(-) (limited to 'proto/ospf/iface.c') diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c index 927b8da..3f1e74d 100644 --- a/proto/ospf/iface.c +++ b/proto/ospf/iface.c @@ -58,15 +58,15 @@ rxbufsize(struct ospf_iface *ifa) } } -static sock * -ospf_open_socket(struct ospf_iface *ifa, int mc) +static int +ospf_sk_open(struct ospf_iface *ifa, int mc) { - sock *ipsk; + sock *sk; struct proto *p = &ifa->oa->po->proto; - ipsk = sk_new(p->pool); - ipsk->type = SK_IP; - ipsk->dport = OSPF_PROTO; + sk = sk_new(p->pool); + sk->type = SK_IP; + sk->dport = OSPF_PROTO; #ifdef OSPFv2 /* @@ -76,45 +76,93 @@ ospf_open_socket(struct ospf_iface *ifa, int mc) * * We want such filter in the vlink (non-mc) socket. */ - ipsk->saddr = mc ? IPA_NONE : ifa->iface->addr->ip; + sk->saddr = mc ? IPA_NONE : ifa->addr->ip; #else /* OSPFv3 */ - ipsk->saddr = ifa->lladdr; + sk->saddr = ifa->addr->ip; /* link-local addr */ #endif - ipsk->tos = IP_PREC_INTERNET_CONTROL; - ipsk->ttl = 1; + sk->tos = IP_PREC_INTERNET_CONTROL; + sk->ttl = 1; if (ifa->type == OSPF_IT_VLINK) - ipsk->ttl = 255; - ipsk->rx_hook = ospf_rx_hook; - ipsk->tx_hook = ospf_tx_hook; - ipsk->err_hook = ospf_err_hook; - ipsk->iface = ifa->iface; - ipsk->rbsize = rxbufsize(ifa); - ipsk->tbsize = ifa->iface->mtu; - ipsk->data = (void *) ifa; - if (sk_open(ipsk) != 0) + sk->ttl = 255; + sk->rx_hook = ospf_rx_hook; + sk->tx_hook = ospf_tx_hook; + sk->err_hook = ospf_err_hook; + sk->iface = ifa->iface; + sk->rbsize = rxbufsize(ifa); + sk->tbsize = ifa->iface->mtu; + sk->data = (void *) ifa; + sk->flags = SKF_LADDR_RX; + + if (sk_open(sk) != 0) goto err; #ifdef OSPFv3 /* 12 is an offset of the checksum in an OSPF packet */ - if (sk_set_ipv6_checksum(ipsk, 12) < 0) + if (sk_set_ipv6_checksum(sk, 12) < 0) goto err; #endif - if (mc) - { - if (sk_setup_multicast(ipsk) < 0) - goto err; - - if (sk_join_group(ipsk, AllSPFRouters) < 0) - goto err; - } + if (mc && (sk_setup_multicast(sk) < 0)) + goto err; - return ipsk; + ifa->sk = sk; + ifa->sk_spf = 0; + ifa->sk_dr = 0; + return 1; err: - rfree(ipsk); - return NULL; + rfree(sk); + return 0; +} + +static inline void +ospf_sk_join_spf(struct ospf_iface *ifa) +{ + if (ifa->sk_spf) + return; + + sk_join_group(ifa->sk, AllSPFRouters); + ifa->sk_spf = 1; +} + +static inline void +ospf_sk_join_dr(struct ospf_iface *ifa) +{ + if (ifa->sk_dr) + return; + + sk_join_group(ifa->sk, AllDRouters); + ifa->sk_dr = 1; +} + +static inline void +ospf_sk_leave_spf(struct ospf_iface *ifa) +{ + if (!ifa->sk_spf) + return; + + sk_leave_group(ifa->sk, AllSPFRouters); + ifa->sk_spf = 0; +} + +static inline void +ospf_sk_leave_dr(struct ospf_iface *ifa) +{ + if (!ifa->sk_dr) + return; + + sk_leave_group(ifa->sk, AllDRouters); + ifa->sk_dr = 0; +} + +static inline void +ospf_sk_close(struct ospf_iface *ifa) +{ + ASSERT(ifa->sk); + + rfree(ifa->sk); + ifa->sk = NULL; } @@ -144,9 +192,9 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state) "Changing state of virtual link %R from \"%s\" into \"%s\".", ifa->vid, ospf_is[oldstate], ospf_is[state]); if (state == OSPF_IS_PTP) - { - ifa->sk = ospf_open_socket(ifa, 0); - } + ospf_sk_open(ifa, 0); + if (state == OSPF_IS_DOWN) + ospf_sk_close(ifa); } else { @@ -157,19 +205,10 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state) { if ((ifa->type != OSPF_IT_NBMA) && (ifa->ioprob == OSPF_I_OK) && ((state == OSPF_IS_BACKUP) || (state == OSPF_IS_DR))) - { - if (!ifa->dr_up == 0) - { - /* FIXME some error handing ? */ - sk_join_group(ifa->sk, AllDRouters); - ifa->dr_up = 1; - } - } - else if (ifa->dr_up) - { - sk_leave_group(ifa->sk, AllDRouters); - ifa->dr_up = 0; - } + ospf_sk_join_dr(ifa); + else + ospf_sk_leave_dr(ifa); + if ((oldstate == OSPF_IS_DR) && (ifa->net_lsa != NULL)) { ifa->net_lsa->lsa.age = LSA_MAXAGE; @@ -182,6 +221,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state) ifa->net_lsa = NULL; } } + // FIXME flushling of link LSA } } } @@ -194,13 +234,15 @@ ospf_iface_down(struct ospf_iface *ifa) struct proto *p = &po->proto; struct ospf_iface *iff; + OSPF_TRACE(D_EVENTS, "Removing interface %s", ifa->iface->name); + /* First of all kill all the related vlinks */ if (ifa->type != OSPF_IT_VLINK) { WALK_LIST(iff, po->iface_list) { if ((iff->type == OSPF_IT_VLINK) && (iff->iface == ifa->iface)) - ospf_iface_down(iff); + ospf_iface_sm(iff, ISM_DOWN); } } @@ -210,9 +252,6 @@ ospf_iface_down(struct ospf_iface *ifa) ospf_neigh_remove(n); } - rfree(ifa->sk); - ifa->sk = NULL; - if (ifa->type == OSPF_IT_VLINK) { ifa->iface = NULL; @@ -220,6 +259,7 @@ ospf_iface_down(struct ospf_iface *ifa) } else { + ospf_sk_close(ifa); rfree(ifa->wait_timer); rfree(ifa->hello_timer); rfree(ifa->poll_timer); @@ -294,18 +334,16 @@ ospf_iface_sm(struct ospf_iface *ifa, int event) case ISM_DOWN: ospf_iface_chstate(ifa, OSPF_IS_DOWN); ospf_iface_down(ifa); - schedule_link_lsa(ifa); schedule_rt_lsa(oa); break; - case ISM_LOOP: /* Useless? */ + /* + case ISM_LOOP: ospf_iface_chstate(ifa, OSPF_IS_LOOP); - ospf_iface_down(ifa); - schedule_rt_lsa(ifa->oa); break; case ISM_UNLOOP: ospf_iface_chstate(ifa, OSPF_IS_DOWN); - schedule_rt_lsa(ifa->oa); break; + */ default: bug("OSPF_I_SM - Unknown event?"); break; @@ -313,45 +351,6 @@ ospf_iface_sm(struct ospf_iface *ifa, int event) } -#if 0 -static sock * -ospf_open_mc_socket(struct ospf_iface *ifa) -{ - sock *mcsk; - struct proto *p = &ifa->oa->po->proto; - - mcsk = sk_new(p->pool); - mcsk->type = SK_IP_MC; - mcsk->sport = 0; - mcsk->dport = OSPF_PROTO; - -#ifdef OSPFv2 - mcsk->saddr = AllSPFRouters; -#else /* OSPFv3 */ - // mcsk->saddr = AllSPFRouters; - mcsk->saddr = ifa->lladdr; -#endif - - mcsk->daddr = AllSPFRouters; - mcsk->tos = IP_PREC_INTERNET_CONTROL; - mcsk->ttl = 1; - mcsk->rx_hook = ospf_rx_hook; - mcsk->tx_hook = ospf_tx_hook; - mcsk->err_hook = ospf_err_hook; - mcsk->iface = ifa->iface; - mcsk->rbsize = rxbufsize(ifa); - mcsk->tbsize = ifa->iface->mtu; - mcsk->data = (void *) ifa; - if (sk_open(mcsk) != 0) - { - DBG("%s: SK_OPEN: mc open failed.\n", p->name); - return (NULL); - } - DBG("%s: SK_OPEN: mc opened.\n", p->name); - return (mcsk); -} -#endif - u8 ospf_iface_clasify(struct iface * ifa) { @@ -390,12 +389,15 @@ ospf_iface_add(struct object_lock *lock) ifa->ioprob = OSPF_I_OK; - ifa->sk = ospf_open_socket(ifa, ifa->type != OSPF_IT_NBMA); - if (ifa->sk == NULL) + ospf_sk_open(ifa, 1); + if (ifa->type != OSPF_IT_NBMA) + ospf_sk_join_spf(ifa); + + if (0) { - log("%s: Huh? could not open ip socket on interface %s?", p->name, + log(L_ERR "%s: Huh? could not open ip socket on interface %s?", p->name, iface->name); - log("%s: Declaring as stub.", p->name); + log(L_ERR "%s: Declaring as stub.", p->name); ifa->stub = 1; ifa->ioprob += OSPF_I_IP; } @@ -414,6 +416,9 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct object_lock *lock; struct ospf_area *oa; + if (ip->type != OSPF_IT_VLINK) + OSPF_TRACE(D_EVENTS, "Adding interface %s", iface->name); + ifa = mb_allocz(p->pool, sizeof(struct ospf_iface)); ifa->iface = iface; @@ -431,12 +436,13 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, #ifdef OSPFv2 ifa->autype = ip->autype; ifa->passwords = ip->passwords; + ifa->addr = iface->addr; #endif #ifdef OSPFv3 ifa->instance_id = ip->instance_id; - ifa->lladdr = IPA_NONE; + ifa->addr = NULL; /* Find link-local address */ if (ifa->type != OSPF_IT_VLINK) @@ -445,11 +451,11 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, WALK_LIST(a, iface->addrs) if (a->scope == SCOPE_LINK) { - ifa->lladdr = a->ip; + ifa->addr = a; break; } - if (! ipa_nonzero(ifa->lladdr)) + if (! ifa->addr) log(L_WARN "%s: Missing link local address on interface %s", p->name, iface->name); } #endif @@ -594,19 +600,13 @@ ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface) } if (ip) - { - OSPF_TRACE(D_EVENTS, "Using interface %s.", iface->name); ospf_iface_new(po, iface, ac, ip); - } } if (flags & IF_CHANGE_DOWN) { if ((ifa = ospf_iface_find((struct proto_ospf *) p, iface)) != NULL) - { - OSPF_TRACE(D_EVENTS, "Killing interface %s.", iface->name); ospf_iface_sm(ifa, ISM_DOWN); - } } if (flags & IF_CHANGE_MTU) @@ -666,4 +666,5 @@ ospf_iface_shutdown(struct ospf_iface *ifa) { init_list(&ifa->neigh_list); hello_timer_hook(ifa->hello_timer); + ospf_sk_close(ifa); } -- cgit v1.2.3