diff options
| -rw-r--r-- | lib/socket.h | 11 | ||||
| -rw-r--r-- | nest/config.Y | 2 | ||||
| -rw-r--r-- | nest/iface.h | 9 | ||||
| -rw-r--r-- | proto/ospf/dbdes.c | 10 | ||||
| -rw-r--r-- | proto/ospf/hello.c | 53 | ||||
| -rw-r--r-- | proto/ospf/iface.c | 218 | ||||
| -rw-r--r-- | proto/ospf/lsack.c | 10 | ||||
| -rw-r--r-- | proto/ospf/lsreq.c | 7 | ||||
| -rw-r--r-- | proto/ospf/lsupd.c | 23 | ||||
| -rw-r--r-- | proto/ospf/neighbor.c | 3 | ||||
| -rw-r--r-- | proto/ospf/ospf.c | 10 | ||||
| -rw-r--r-- | proto/ospf/ospf.h | 11 | ||||
| -rw-r--r-- | proto/ospf/packet.c | 189 | ||||
| -rw-r--r-- | proto/ospf/packet.h | 1 | ||||
| -rw-r--r-- | proto/ospf/rt.c | 22 | ||||
| -rw-r--r-- | proto/ospf/topology.c | 30 | ||||
| -rw-r--r-- | sysdep/bsd/sysio.h | 110 | ||||
| -rw-r--r-- | sysdep/linux/sysio.h | 87 | ||||
| -rw-r--r-- | sysdep/unix/io.c | 143 |
19 files changed, 653 insertions, 296 deletions
diff --git a/lib/socket.h b/lib/socket.h index a2857999..e6ce1257 100644 --- a/lib/socket.h +++ b/lib/socket.h @@ -36,8 +36,11 @@ typedef struct birdsock { void (*err_hook)(struct birdsock *, int); /* errno or zero if EOF */ - ip_addr faddr; /* For packet protocols: source of current packet */ - unsigned fport; + /* Information about received datagrams (UDP, RAW), valid in rx_hook */ + ip_addr faddr, laddr; /* src (From) and dst (Local) address of the datagram */ + unsigned fport; /* src port of the datagram */ + unsigned lifindex; /* local interface that received the datagram */ + /* laddr and lifindex are valid only if SKF_LADDR_RX flag is set to request it */ int fd; /* System-dependent data */ node n; @@ -77,7 +80,9 @@ sk_send_buffer_empty(sock *sk) /* Socket flags */ -#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */ +#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */ +#define SKF_LADDR_RX 2 /* Report local address for RX packets */ +#define SKF_LADDR_TX 4 /* Allow to specify local address for TX packets */ /* diff --git a/nest/config.Y b/nest/config.Y index 5a895051..792012e7 100644 --- a/nest/config.Y +++ b/nest/config.Y @@ -472,7 +472,7 @@ CF_CLI(RELOAD OUT, proto_patt, <protocol> | \"<pattern>\" | all, [[Reload protoc { proto_apply_cmd($3, proto_cmd_reload, 1, CMD_RELOAD_OUT); } ; CF_CLI_HELP(DEBUG, ..., [[Control protocol debugging via BIRD logs]]) -CF_CLI(DEBUG, proto_patt debug_mask, (<protocol> | <pattern> | all) (all | off | { states | routes | filters | events | packets }), [[Control protocol debugging via BIRD logs]]) +CF_CLI(DEBUG, proto_patt debug_mask, (<protocol> | <pattern> | all) (all | off | { states | routes | filters | interfaces | events | packets }), [[Control protocol debugging via BIRD logs]]) { proto_apply_cmd($2, proto_cmd_debug, 1, $3); } ; CF_CLI_HELP(MRTDUMP, ..., [[Control protocol debugging via MRTdump files]]) diff --git a/nest/iface.h b/nest/iface.h index 8fc2567d..873734d8 100644 --- a/nest/iface.h +++ b/nest/iface.h @@ -83,6 +83,15 @@ struct iface *if_find_by_index(unsigned); struct iface *if_find_by_name(char *); void ifa_recalc_all_primary_addresses(void); +static inline int +ifa_match_addr(struct ifa *ifa, ip_addr addr) +{ + if (ifa->flags & IA_UNNUMBERED) + return ipa_equal(addr, ifa->opposite); + else + return ipa_in_net(addr, ifa->prefix, ifa->pxlen); +} + /* The Neighbor Cache */ typedef struct neighbor { diff --git a/proto/ospf/dbdes.c b/proto/ospf/dbdes.c index a249d75f..8cd7c8b2 100644 --- a/proto/ospf/dbdes.c +++ b/proto/ospf/dbdes.c @@ -93,8 +93,8 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next) { case NEIGHBOR_EXSTART: /* Send empty packets */ n->myimms.bit.i = 1; - pkt = (struct ospf_dbdes_packet *) (ifa->sk->tbuf); - op = (struct ospf_packet *) pkt; + pkt = ospf_tx_buffer(ifa); + op = &pkt->ospf_packet; ospf_pkt_fill_hdr(ifa, pkt, DBDES_P); pkt->iface_mtu = htons(ifa->iface->mtu); pkt->options = hton_opt(oa->options); @@ -185,10 +185,10 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next) } /* Copy last sent packet again */ - memcpy(ifa->sk->tbuf, n->ldbdes, length); + pkt = ospf_tx_buffer(ifa); + memcpy(pkt, n->ldbdes, length); - OSPF_PACKET(ospf_dump_dbdes, (struct ospf_dbdes_packet *) ifa->sk->tbuf, - "DBDES packet sent to %I via %s", n->ip, ifa->iface->name); + OSPF_PACKET(ospf_dump_dbdes, pkt, "DBDES packet sent to %I via %s", n->ip, ifa->iface->name); ospf_send_to(ifa, n->ip); if(n->myimms.bit.ms) tm_start(n->rxmt_timer, n->ifa->rxmtint); /* Restart timer */ diff --git a/proto/ospf/hello.c b/proto/ospf/hello.c index 2f3a8a81..7fe82801 100644 --- a/proto/ospf/hello.c +++ b/proto/ospf/hello.c @@ -47,7 +47,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, { struct proto_ospf *po = ifa->oa->po; struct proto *p = &po->proto; - char *beg = "Bad OSPF HELLO packet from ", *rec = " received: "; + char *beg = "OSPF: Bad HELLO packet from "; unsigned int size, i, twoway, eligible, peers; u32 tmp; u32 *pnrid; @@ -55,7 +55,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, size = ntohs(ps_i->length); if (size < sizeof(struct ospf_hello_packet)) { - log(L_ERR "%s%I - too short (%u B)", beg, faddr, size); + log(L_ERR "%s%I - too short (%u B)", beg, faddr, size); return; } @@ -67,38 +67,19 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, #ifdef OSPFv2 ip_addr mask = ps->netmask; ipa_ntoh(mask); - if (ifa->type != OSPF_IT_VLINK) - { - char *msg = L_WARN "Received HELLO packet %s (%I) is inconsistent " - "with the primary address of interface %s."; - - if ((ifa->type != OSPF_IT_PTP) && - !ipa_equal(mask, ipa_mkmask(ifa->iface->addr->pxlen))) - { - if (!n) log(msg, "netmask", mask, ifa->iface->name); - return; - } - - /* This check is not specified in RFC 2328, but it is needed - * to handle the case when there is more IP networks on one - * physical network (which is not handled in RFC 2328). - * We allow OSPF on primary IP address only and ignore HELLO packets - * with secondary addresses (which are sent for example by Quagga. - */ - if ((ifa->iface->addr->flags & IA_UNNUMBERED) ? - !ipa_equal(faddr, ifa->iface->addr->opposite) : - !ipa_equal(ipa_and(faddr,mask), ifa->iface->addr->prefix)) - { - if (!n) log(msg, "address", faddr, ifa->iface->name); - return; - } - } + if ((ifa->type != OSPF_IT_VLINK) && + (ifa->type != OSPF_IT_PTP) && + !ipa_equal(mask, ipa_mkmask(ifa->addr->pxlen))) + { + log(L_ERR "%s%I - netmask mismatch (%I)", beg, faddr, mask); + return; + } #endif tmp = ntohs(ps->helloint); if (tmp != ifa->helloint) { - log(L_ERR "%s%I%shello interval mismatch (%d).", beg, faddr, rec, tmp); + log(L_ERR "%s%I - hello interval mismatch (%d)", beg, faddr, tmp); return; } @@ -109,14 +90,14 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, #endif if (tmp != ifa->dead) { - log(L_ERR "%s%I%sdead interval mismatch (%d).", beg, faddr, rec, tmp); + log(L_ERR "%s%I - dead interval mismatch (%d)", beg, faddr, tmp); return; } tmp = !(ps->options & OPT_E); if (tmp != ifa->oa->stub) { - log(L_ERR "%s%I%sstub area flag mismatch (%d).", beg, faddr, rec, tmp); + log(L_ERR "%s%I - stub area flag mismatch (%d)", beg, faddr, tmp); return; } @@ -137,7 +118,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, } if ((found == 0) && (ifa->strictnbma)) { - log(L_WARN "Ignoring new neighbor: %I on %s.", faddr, + log(L_WARN "Ignoring new neighbor: %I on %s", faddr, ifa->iface->name); return; } @@ -153,7 +134,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, } } } - OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s.", faddr, + OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s", faddr, ifa->iface->name); n = ospf_neighbor_new(ifa); @@ -277,14 +258,14 @@ ospf_hello_send(timer *timer, int poll, struct ospf_neighbor *dirn) p->name, ifa->iface->name); /* Now we should send a hello packet */ - pkt = (struct ospf_hello_packet *) (ifa->sk->tbuf); - op = (struct ospf_packet *) pkt; + pkt = ospf_tx_buffer(ifa); + op = &pkt->ospf_packet; /* Now fill ospf_hello header */ ospf_pkt_fill_hdr(ifa, pkt, HELLO_P); #ifdef OSPFv2 - pkt->netmask = ipa_mkmask(ifa->iface->addr->pxlen); + pkt->netmask = ipa_mkmask(ifa->addr->pxlen); ipa_hton(pkt->netmask); if ((ifa->type == OSPF_IT_VLINK) || (ifa->type == OSPF_IT_PTP)) pkt->netmask = IPA_NONE; diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c index 927b8da9..a99ceb12 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 +76,90 @@ 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; - 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->tos = IP_PREC_INTERNET_CONTROL; + 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; } @@ -143,10 +188,12 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state) OSPF_TRACE(D_EVENTS, "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 +204,10 @@ 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 +220,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state) ifa->net_lsa = NULL; } } + // FIXME flushling of link LSA } } } @@ -194,13 +233,15 @@ 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 +251,6 @@ 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 +258,7 @@ 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 +333,16 @@ 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 +350,6 @@ 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 +388,15 @@ 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 +415,9 @@ 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 +435,13 @@ 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 +450,11 @@ 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 +599,13 @@ 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 +665,5 @@ ospf_iface_shutdown(struct ospf_iface *ifa) { init_list(&ifa->neigh_list); hello_timer_hook(ifa->hello_timer); + ospf_sk_close(ifa); } diff --git a/proto/ospf/lsack.c b/proto/ospf/lsack.c index c740ef69..c05f0196 100644 --- a/proto/ospf/lsack.c +++ b/proto/ospf/lsack.c @@ -66,8 +66,8 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue) if (EMPTY_LIST(n->ackl[queue])) return; - pk = (struct ospf_lsack_packet *) ifa->sk->tbuf; - op = (struct ospf_packet *) ifa->sk->tbuf; + pk = ospf_tx_buffer(ifa); + op = &pk->ospf_packet; ospf_pkt_fill_hdr(n->ifa, pk, LSACK_P); h = pk->lsh; @@ -92,8 +92,7 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue) op->length = htons(len); DBG("Sending and continuing! Len=%u\n", len); - OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf, - "LSACK packet sent via %s", ifa->iface->name); + OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name); if (ifa->type == OSPF_IT_BCAST) { @@ -120,8 +119,7 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue) op->length = htons(len); DBG("Sending! Len=%u\n", len); - OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf, - "LSACK packet sent via %s", ifa->iface->name); + OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name); if (ifa->type == OSPF_IT_BCAST) { diff --git a/proto/ospf/lsreq.c b/proto/ospf/lsreq.c index 0e360d75..1ba4fff9 100644 --- a/proto/ospf/lsreq.c +++ b/proto/ospf/lsreq.c @@ -44,8 +44,8 @@ ospf_lsreq_send(struct ospf_neighbor *n) int i, j; struct proto *p = &n->ifa->oa->po->proto; - pk = (struct ospf_lsreq_packet *) n->ifa->sk->tbuf; - op = (struct ospf_packet *) n->ifa->sk->tbuf; + pk = ospf_tx_buffer(n->ifa); + op = &pk->ospf_packet; ospf_pkt_fill_hdr(n->ifa, pk, LSREQ_P); @@ -82,8 +82,7 @@ ospf_lsreq_send(struct ospf_neighbor *n) i) * sizeof(struct ospf_lsreq_header); op->length = htons(length); - OSPF_PACKET(ospf_dump_lsreq, (struct ospf_lsreq_packet *) n->ifa->sk->tbuf, - "LSREQ packet sent to %I via %s", n->ip, n->ifa->iface->name); + OSPF_PACKET(ospf_dump_lsreq, pk, "LSREQ packet sent to %I via %s", n->ip, n->ifa->iface->name); ospf_send_to(n->ifa, n->ip); } diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c index 628dca96..7d5d89da 100644 --- a/proto/ospf/lsupd.c +++ b/proto/ospf/lsupd.c @@ -269,8 +269,8 @@ ospf_lsupd_flood(struct proto_ospf *po, struct ospf_packet *op; struct ospf_lsa_header *lh; - pk = (struct ospf_lsupd_packet *) ifa->sk->tbuf; - op = (struct ospf_packet *) ifa->sk->tbuf; + pk = ospf_tx_buffer(ifa); + op = &pk->ospf_packet; ospf_pkt_fill_hdr(ifa, pk, LSUPD_P); pk->lsano = htonl(1); @@ -303,8 +303,7 @@ ospf_lsupd_flood(struct proto_ospf *po, op->length = htons(len); - OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) ifa->sk->tbuf, - "LSUPD packet flooded via %s", ifa->iface->name); + OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet flooded via %s", ifa->iface->name); switch (ifa->type) { @@ -348,11 +347,11 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l) if (EMPTY_LIST(*l)) return; - pk = (struct ospf_lsupd_packet *) n->ifa->sk->tbuf; - op = (struct ospf_packet *) n->ifa->sk->tbuf; - DBG("LSupd: 1st packet\n"); + pk= ospf_tx_buffer(n->ifa); + op = &pk->ospf_packet; + ospf_pkt_fill_hdr(n->ifa, pk, LSUPD_P); len = sizeof(struct ospf_lsupd_packet); lsano = 0; @@ -373,8 +372,7 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l) pk->lsano = htonl(lsano); op->length = htons(len); - OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) n->ifa->sk->tbuf, - "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name); + OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name); ospf_send_to(n->ifa, n->ip); DBG("LSupd: next packet\n"); @@ -395,8 +393,7 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l) pk->lsano = htonl(lsano); op->length = htons(len); - OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) n->ifa->sk->tbuf, - "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name); + OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name); ospf_send_to(n->ifa, n->ip); } } @@ -414,7 +411,7 @@ ospf_lsupd_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, unsigned int size = ntohs(ps_i->length); if (size < (sizeof(struct ospf_lsupd_packet) + sizeof(struct ospf_lsa_header))) { - log(L_ERR "Bad OSPF LSUPD packet from %I - too short (%u B)", n->ip, size); + log(L_ERR "OSPF: Bad LSUPD packet from %I - too short (%u B)", n->ip, size); return; } @@ -535,7 +532,7 @@ ospf_lsupd_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa, { if (!nifa->iface) continue; - if (ipa_equal(nifa->iface->addr->ip, ipa_from_u32(lsatmp.id))) + if (ipa_equal(nifa->addr->ip, ipa_from_u32(lsatmp.id))) { self = 1; break; diff --git a/proto/ospf/neighbor.c b/proto/ospf/neighbor.c index 13abc569..69c58806 100644 --- a/proto/ospf/neighbor.c +++ b/proto/ospf/neighbor.c @@ -449,13 +449,12 @@ bdr_election(struct ospf_iface *ifa) me.state = NEIGHBOR_2WAY; me.rid = myid; me.priority = ifa->priority; + me.ip = ifa->addr->ip; #ifdef OSPFv2 - me.ip = ifa->iface->addr->ip; me.dr = ipa_to_u32(ifa->drip); me.bdr = ipa_to_u32(ifa->bdrip); #else /* OSPFv3 */ - me.ip = ifa->lladdr; me.dr = ifa->drid; me.bdr = ifa->bdrid; me.iface_id = ifa->iface->index; diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c index 191aa456..e2a3aed0 100644 --- a/proto/ospf/ospf.c +++ b/proto/ospf/ospf.c @@ -480,7 +480,9 @@ ospf_shutdown(struct proto *p) OSPF_TRACE(D_EVENTS, "Shutdown requested"); /* And send to all my neighbors 1WAY */ - WALK_LIST(ifa, po->iface_list) ospf_iface_shutdown(ifa); + WALK_LIST(ifa, po->iface_list) + if (ifa->state > OSPF_IS_DOWN) + ospf_iface_shutdown(ifa); return PS_DOWN; } @@ -1209,7 +1211,7 @@ show_lsa_sum_net(struct top_hash_entry *he) lsa_get_ipv6_prefix(ls->prefix, &ip, &pxlen, &pxopts, &rest); #endif - cli_msg(-1016, "\t\txnetwork %I/%d", ip, pxlen); + cli_msg(-1016, "\t\txnetwork %I/%d metric %u", ip, pxlen, ls->metric); } static inline void @@ -1218,7 +1220,7 @@ show_lsa_sum_rt(struct top_hash_entry *he) u32 dst_rid, options; #ifdef OSPFv2 - // struct ospf_lsa_sum *ls = he->lsa_body; + struct ospf_lsa_sum *ls = he->lsa_body; dst_rid = he->lsa.id; options = 0; #else /* OSPFv3 */ @@ -1227,7 +1229,7 @@ show_lsa_sum_rt(struct top_hash_entry *he) options = ls->options & OPTIONS_MASK; #endif - cli_msg(-1016, "\t\txrouter %R", dst_rid); + cli_msg(-1016, "\t\txrouter %R metric %u", dst_rid, ls->metric); } diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h index 78b66ec9..cb4f53c1 100644 --- a/proto/ospf/ospf.h +++ b/proto/ospf/ospf.h @@ -159,6 +159,7 @@ struct ospf_iface { node n; struct iface *iface; /* Nest's iface */ + struct ifa *addr; struct ospf_area *oa; struct object_lock *lock; sock *sk; /* IP socket (for DD ...) */ @@ -192,7 +193,6 @@ struct ospf_iface u32 dr_iface_id; /* if drid is valid, this is iface_id of DR (for connecting network) */ u8 instance_id; /* Used to differentiate between more OSPF instances on one interface */ - ip_addr lladdr; /* Used link-local addr */ #endif u8 type; /* OSPF view of type */ @@ -237,9 +237,10 @@ struct ospf_iface #endif int fadj; /* Number of full adjacent neigh */ list nbma_list; - u8 priority; /* A router priority for DR election */ + u8 priority; /* A router priority for DR election */ u8 ioprob; - u8 dr_up; /* Socket is a member of DRouters group */ + u8 sk_spf; /* Socket is a member of SPFRouters group */ + u8 sk_dr; /* Socket is a member of DRouters group */ u32 rxbuf; }; @@ -675,8 +676,8 @@ struct ospf_neighbor #define ISM_WAITF 1 /* Wait timer fired */ #define ISM_BACKS 2 /* Backup seen */ #define ISM_NEICH 3 /* Neighbor change */ -#define ISM_LOOP 4 /* Loop indicated */ -#define ISM_UNLOOP 5 /* Unloop indicated */ +// #define ISM_LOOP 4 /* Loop indicated */ +// #define ISM_UNLOOP 5 /* Unloop indicated */ #define ISM_DOWN 6 /* Interface down */ /* Definitions for neighbor state machine */ diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c index ea5f7a86..95f7653c 100644 --- a/proto/ospf/packet.c +++ b/proto/ospf/packet.c @@ -251,12 +251,13 @@ ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt) static int ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_packet *pkt, int size) { return 1; } - + #endif + /** * ospf_rx_hook - * @sk: socket we received the packet. Its ignored. + * @sk: socket we received the packet. * @size: size of the packet * * This is the entry point for messages from neighbors. Many checks (like @@ -264,21 +265,52 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_ * non generic functions. */ int -ospf_rx_hook(sock * sk, int size) +ospf_rx_hook(sock *sk, int size) { - struct ospf_packet *ps; - struct ospf_iface *ifa = (struct ospf_iface *) (sk->data); + char *mesg = "OSPF: Bad packet from "; + + /* We want just packets from sk->iface. Unfortunately, on BSD we + cannot filter out other packets at kernel level and we receive + all packets on all sockets */ + if (sk->lifindex != sk->iface->index) + return 1; + + DBG("OSPF: RX hook called (iface %s, src %I, dst %I)\n", + sk->iface->name, sk->faddr, sk->laddr); + + /* Initially, the packet is associated with the 'master' iface */ + struct ospf_iface *ifa = sk->data; struct proto_ospf *po = ifa->oa->po; - struct proto *p = &po->proto; - struct ospf_neighbor *n; - int osize; - char *mesg = "Bad OSPF packet from "; - struct ospf_iface *iff; + // struct proto *p = &po->proto; + + int src_local = ifa_match_addr(ifa->addr, sk->faddr); + int dst_local = ipa_equal(sk->laddr, ifa->addr->ip); + int dst_mcast = ipa_equal(sk->laddr, AllSPFRouters) || ipa_equal(sk->laddr, AllDRouters); - if (ifa->stub) - return (1); +#ifdef OSPFv2 + /* First, we eliminate packets with strange address combinations. + * In OSPFv2, they might be for other ospf_ifaces (with different IP + * prefix) on the same real iface, so we don't log it. We enforce + * that (src_local || dst_local), therefore we are eliminating all + * such cases. + */ + if (dst_mcast && !src_local) + return 1; + if (!dst_mcast && !dst_local) + return 1; + +#else /* OSPFv3 */ + + /* In OSPFv3, src_local and dst_local mean link-local. + * RFC 5340 says that local (non-vlink) packets use + * link-local src address, but does not enforce it. Strange. + */ + if (dst_mcast && !src_local) + log(L_WARN "OSPF: Received multicast packet from %I (not link-local)", sk->faddr); +#endif - ps = (struct ospf_packet *) ip_skip_header(sk->rbuf, &size); + /* Second, we check packet size, checksum, and the protocol version */ + struct ospf_packet *ps = (struct ospf_packet *) ip_skip_header(sk->rbuf, &size); if (ps == NULL) { @@ -286,34 +318,25 @@ ospf_rx_hook(sock * sk, int size) return 1; } - /* We receive packets related to vlinks even on non-vlink sockets */ - if ((ifa->oa->areaid != 0) && (ntohl(ps->areaid) == 0)) - { - WALK_LIST(iff, po->iface_list) - { - if ((iff->type == OSPF_IT_VLINK) && (iff->iface == ifa->iface) && - (iff->voa = ifa->oa) && ipa_equal(sk->faddr, iff->vip)) - { - return 1; /* Packet is for VLINK */ - } - } - } - - DBG("%s: RX_Hook called on interface %s.\n", p->name, sk->iface->name); - if ((unsigned) size < sizeof(struct ospf_packet)) { log(L_ERR "%s%I - too short (%u bytes)", mesg, sk->faddr, size); return 1; } - osize = ntohs(ps->length); + int osize = ntohs(ps->length); if ((osize > size) || ((osize % 4) != 0)) { log(L_ERR "%s%I - size field does not match (%d/%d)", mesg, sk->faddr, osize, size); return 1; } + if ((unsigned) size > sk->rbsize) + { + log(L_ERR "%s%I - too large (%d vs %d)", mesg, sk->faddr, size, sk->rbsize); + return 1; + } + if (ps->version != OSPF_VERSION) { log(L_ERR "%s%I - version %u", mesg, sk->faddr, ps->version); @@ -330,48 +353,93 @@ ospf_rx_hook(sock * sk, int size) } #endif - if (ntohl(ps->areaid) != ifa->oa->areaid) - { - log(L_ERR "%s%I - different area (%u)", mesg, sk->faddr, ntohl(ps->areaid)); - return 1; - } - /* FIXME - handling of instance id should be better */ + /* Third, we resolve associated iface and handle vlinks. */ + + u32 areaid = ntohl(ps->areaid); + u32 rid = ntohl(ps->routerid); + + if ((areaid == ifa->oa->areaid) #ifdef OSPFv3 - if (ps->instance_id != ifa->instance_id) + && (ps->instance_id != ifa->instance_id) +#endif + ) { - log(L_ERR "%s%I - different instance (%u)", mesg, sk->faddr, ps->instance_id); + /* It is real iface, source should be local (in OSPFv2) */ +#ifdef OSPFv2 + if (!src_local) + return 1; +#endif + } + else if (dst_mcast || (areaid != 0)) + { + /* Obvious mismatch */ + +#ifdef OSPFv2 + /* We ignore mismatch in OSPFv3, because there might be + other instance with different instance ID */ + log(L_ERR "%s%I - area does not match (%R vs %R)", + mesg, sk->faddr, areaid, ifa->oa->areaid); +#endif return 1; } + else + { + /* Some vlink? */ + struct ospf_iface *iff = NULL; + + WALK_LIST(iff, po->iface_list) + { + if ((iff->type == OSPF_IT_VLINK) && + (iff->voa == ifa->oa) && +#ifdef OSPFv3 + (iff->instance_id == ps->instance_id) && #endif + (iff->vid == rid)) + { + /* Vlink should be UP */ + if (iff->state != OSPF_IS_PTP) + return 1; + + ifa = iff; + goto found; + } + } - if (ntohl(ps->routerid) == po->router_id) - { - log(L_ERR "%s%I - received my own router ID!", mesg, sk->faddr); +#ifdef OSPFv2 + log(L_WARN "OSPF: Received packet for uknown vlink (ID %R, IP %I)", rid, sk->faddr); +#endif return 1; } - if (ntohl(ps->routerid) == 0) + found: + if (ifa->stub) /* This shouldn't happen */ + return 1; + + if (ipa_equal(sk->laddr, AllDRouters) && (ifa->sk_dr == 0)) + return 1; + + if (rid == po->router_id) { - log(L_ERR "%s%I - router id = 0.0.0.0", mesg, sk->faddr); + log(L_ERR "%s%I - received my own router ID!", mesg, sk->faddr); return 1; } - if ((unsigned) size > sk->rbsize) + if (rid == 0) { - log(L_ERR "%s%I - packet is too large (%d vs %d)", - mesg, sk->faddr, size, sk->rbsize); + log(L_ERR "%s%I - router id = 0.0.0.0", mesg, sk->faddr); return 1; } /* This is deviation from RFC 2328 - neighbours should be identified by * IP address on broadcast and NBMA networks. */ - n = find_neigh(ifa, ntohl(ps->routerid)); + struct ospf_neighbor *n = find_neigh(ifa, rid); if(!n && (ps->type != HELLO_P)) { - OSPF_TRACE(D_PACKETS, "Received non-hello packet from uknown neighbor (%I)", sk->faddr); + log(L_WARN "OSPF: Received non-hello packet from uknown neighbor (src %I, iface %s)", + sk->faddr, ifa->iface->name); return 1; } @@ -421,18 +489,17 @@ ospf_rx_hook(sock * sk, int size) void ospf_tx_hook(sock * sk) { - struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); - struct proto *p = (struct proto *) (ifa->oa->po); - log(L_ERR "%s: TX_Hook called on interface %s\n", p->name, sk->iface->name); +// struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); +// struct proto *p = (struct proto *) (ifa->oa->po); + log(L_ERR "OSPF: TX_Hook called"); } void ospf_err_hook(sock * sk, int err) { - struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); - struct proto *p = (struct proto *) (ifa->oa->po); - log(L_ERR "%s: Err_Hook called on interface %s with err=%d\n", - p->name, sk->iface->name, err); +// struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); +// struct proto *p = (struct proto *) (ifa->oa->po); + log(L_ERR "OSPF: Socket error: %m", err); } void @@ -440,8 +507,9 @@ ospf_send_to_agt(struct ospf_iface *ifa, u8 state) { struct ospf_neighbor *n; - WALK_LIST(n, ifa->neigh_list) if (n->state >= state) - ospf_send_to(ifa, n->ip); + WALK_LIST(n, ifa->neigh_list) + if (n->state >= state) + ospf_send_to(ifa, n->ip); } void @@ -454,7 +522,7 @@ ospf_send_to_bdr(struct ospf_iface *ifa) } void -ospf_send_to(struct ospf_iface *ifa, ip_addr ip) +ospf_send_to(struct ospf_iface *ifa, ip_addr dst) { sock *sk = ifa->sk; struct ospf_packet *pkt = (struct ospf_packet *) sk->tbuf; @@ -467,11 +535,8 @@ ospf_send_to(struct ospf_iface *ifa, ip_addr ip) ospf_pkt_finalize(ifa, pkt); if (sk->tbuf != sk->tpos) - log(L_ERR "Aiee, old packet was overwritted in TX buffer"); + log(L_ERR "Aiee, old packet was overwritten in TX buffer"); - if (ipa_equal(ip, IPA_NONE)) - sk_send(sk, len); - else - sk_send_to(sk, len, ip, OSPF_PROTO); + sk_send_to(sk, len, dst, 0); } diff --git a/proto/ospf/packet.h b/proto/ospf/packet.h index 4d5612ff..1c74a703 100644 --- a/proto/ospf/packet.h +++ b/proto/ospf/packet.h @@ -19,5 +19,6 @@ void ospf_send_to_agt(struct ospf_iface *ifa, u8 state); void ospf_send_to_bdr(struct ospf_iface *ifa); void ospf_send_to(struct ospf_iface *ifa, ip_addr ip); +static inline void * ospf_tx_buffer(struct ospf_iface *ifa) { return ifa->sk->tbuf; } #endif /* _BIRD_OSPF_PACKET_H_ */ diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c index c856eea1..9a330a83 100644 --- a/proto/ospf/rt.c +++ b/proto/ospf/rt.c @@ -266,9 +266,10 @@ ospf_rt_spfa_rtlinks(struct ospf_area *oa, struct top_hash_entry *act, struct to WALK_LIST(iff, po->iface_list) /* Try to find corresponding interface */ { + // FIXME this is broken if (iff->iface && (iff->type != OSPF_IT_VLINK) && - (rtl->id == (ipa_to_u32(ipa_mkmask(iff->iface->addr->pxlen)) - & ipa_to_u32(iff->iface->addr->prefix)))) /* No VLINK and IP must match */ + (rtl->id == (ipa_to_u32(ipa_mkmask(iff->addr->pxlen)) + & ipa_to_u32(iff->addr->prefix)))) /* No VLINK and IP must match */ { nf.ifa = iff; break; @@ -428,6 +429,7 @@ ospf_rt_spfa(struct ospf_area *oa) OSPF_TRACE(D_EVENTS, "Vlink peer %R found", tmp->lsa.id); ospf_iface_sm(iface, ISM_DOWN); iface->iface = tmp->nhi->iface; + iface->addr = iface->iface->addr; iface->vip = tmp->lb; ospf_iface_sm(iface, ISM_UP); } @@ -437,7 +439,7 @@ ospf_rt_spfa(struct ospf_area *oa) if (iface->state > OSPF_IS_DOWN) { OSPF_TRACE(D_EVENTS, "Vlink peer %R lost", iface->vid); - ospf_iface_sm(iface, ISM_DOWN); + ospf_iface_sm(iface, ISM_DOWN); } } } @@ -569,7 +571,7 @@ ospf_rt_sum_tr(struct ospf_area *oa) metric = ls->metric & METRIC_MASK; options = 0; type = ORT_NET; - re = (ort *) fib_find(&po->rtf, &ip, pxlen); + re = fib_find(&po->rtf, &ip, pxlen); } else // en->lsa.type == LSA_T_SUM_RT { @@ -588,7 +590,7 @@ ospf_rt_sum_tr(struct ospf_area *oa) metric = ls->metric & METRIC_MASK; options |= ORTA_ASBR; type = ORT_ROUTER; - re = (ort *) fib_find(&bb->rtr, &ip, pxlen); + re = fib_find(&bb->rtr, &ip, pxlen); } /* 16.3 (1b) */ @@ -596,14 +598,14 @@ ospf_rt_sum_tr(struct ospf_area *oa) continue; /* 16.3 (3) */ - if (!re) continue; + if (!re || !re->n.type) continue; if (re->n.oa->areaid != 0) continue; if ((re->n.type != RTS_OSPF) && (re->n.type != RTS_OSPF_IA)) continue; /* 16.3. (4) */ abrip = ipa_from_rid(en->lsa.rt); abr = fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH); - if (!abr) continue; + if (!abr || !abr->n.type) continue; nf.type = re->n.type; nf.options = options; @@ -711,7 +713,9 @@ ospf_rt_sum(struct ospf_area *oa) /* Page 169 (4) */ abrip = ipa_from_rid(en->lsa.rt); - if (!(abr = (ort *) fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH))) continue; + + abr = (ort *) fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH); + if (!abr || !abr->n.type) continue; if (abr->n.metric1 == LSINFINITY) continue; if (!(abr->n.options & ORTA_ABR)) continue; @@ -901,7 +905,7 @@ ospf_ext_spf(struct proto_ospf *po) WALK_LIST(atmp, po->area_list) { nfh = fib_find(&atmp->rtr, &rtid, MAX_PREFIX_LENGTH); - if (nfh == NULL) continue; + if (!nfh || !nfh->n.type) continue; if (nf1 == NULL) nf1 = nfh; else if (ri_better(po, &nfh->n, NULL, &nf1->n, NULL, po->rfc1583)) nf1 = nfh; } diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c index 54701192..bff9b2e8 100644 --- a/proto/ospf/topology.c +++ b/proto/ospf/topology.c @@ -205,7 +205,7 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length) WALK_LIST(ifa, po->iface_list) { - int master = 0; + int net_lsa = 0; if ((ifa->type == OSPF_IT_VLINK) && (ifa->voa == oa) && (!EMPTY_LIST(ifa->neigh_list))) @@ -230,12 +230,11 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length) ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link)); ln->type = LSART_PTP; ln->id = neigh->rid; - ln->data = (ifa->iface->addr->flags & IA_UNNUMBERED) ? - ifa->iface->index : ipa_to_u32(ifa->iface->addr->ip); + ln->data = (ifa->addr->flags & IA_UNNUMBERED) ? + ifa->iface->index : ipa_to_u32(ifa->addr->ip); ln->metric = ifa->cost; ln->padding = 0; i++; - master = 1; } break; @@ -246,11 +245,11 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length) ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link)); ln->type = LSART_NET; ln->id = ipa_to_u32(ifa->drip); - ln->data = ipa_to_u32(ifa->iface->addr->ip); + ln->data = ipa_to_u32(ifa->addr->ip); ln->metric = ifa->cost; ln->padding = 0; i++; - master = 1; + net_lsa = 1; } break; @@ -261,11 +260,10 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length) ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link)); ln->type = LSART_VLNK; ln->id = neigh->rid; - ln->data = ipa_to_u32(ifa->iface->addr->ip); + ln->data = ipa_to_u32(ifa->addr->ip); ln->metric = ifa->cost; ln->padding = 0; i++; - master = 1; } break; @@ -278,13 +276,12 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length) struct ifa *a; WALK_LIST(a, ifa->iface->addrs) { - if (((a == ifa->iface->addr) && master) || + if (((a == ifa->addr) && net_lsa) || (a->flags & IA_SECONDARY) || (a->flags & IA_UNNUMBERED) || configured_stubnet(oa, a)) continue; - ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link)); ln->type = LSART_STUB; ln->id = ipa_to_u32(a->prefix); @@ -483,7 +480,7 @@ originate_net_lsa_body(struct ospf_iface *ifa, u16 *length, + nodes * sizeof(u32)); #ifdef OSPFv2 - net->netmask = ipa_mkmask(ifa->iface->addr->pxlen); + net->netmask = ipa_mkmask(ifa->addr->pxlen); #endif #ifdef OSPFv3 @@ -547,7 +544,7 @@ originate_net_lsa(struct ospf_iface *ifa) #ifdef OSPFv2 lsa.options = ifa->oa->options; - lsa.id = ipa_to_u32(ifa->iface->addr->ip); + lsa.id = ipa_to_u32(ifa->addr->ip); #else /* OSPFv3 */ lsa.id = ifa->iface->index; #endif @@ -749,12 +746,13 @@ originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32 struct proto_ospf *po = oa->po; struct proto *p = &po->proto; struct top_hash_entry *en; - u32 dom = oa->areaid; + u32 dom = oa->areaid; + u32 rid = ipa_to_rid(fn->prefix); struct ospf_lsa_header lsa; void *body; OSPF_TRACE(D_EVENTS, "Originating rt-summary-LSA for %R (metric %d)", - lsa.id, metric); + rid, metric); lsa.age = 0; #ifdef OSPFv2 @@ -762,7 +760,7 @@ originate_sum_rt_lsa(struct ospf_area *oa, struct fib_node *fn, int metric, u32 #endif lsa.type = LSA_T_SUM_RT; /* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */ - lsa.id = ipa_to_rid(fn->prefix); + lsa.id = rid; lsa.rt = po->router_id; lsa.sn = LSA_INITSEQNO; @@ -1050,7 +1048,7 @@ originate_link_lsa_body(struct ospf_iface *ifa, u16 *length) ASSERT(po->lsab_used == 0); ll = lsab_allocz(po, sizeof(struct ospf_lsa_link)); ll->options = ifa->oa->options | (ifa->priority << 24); - ll->lladdr = ifa->lladdr; + ll->lladdr = ifa->addr->ip; ll = NULL; /* buffer might be reallocated later */ struct ifa *a; diff --git a/sysdep/bsd/sysio.h b/sysdep/bsd/sysio.h index 80f8f942..9ee4ade3 100644 --- a/sysdep/bsd/sysio.h +++ b/sysdep/bsd/sysio.h @@ -11,21 +11,39 @@ static inline void set_inaddr(struct in6_addr * ia, ip_addr a) { - ipa_hton(a); - memcpy(ia, &a, sizeof(a)); + ipa_hton(a); + memcpy(ia, &a, sizeof(a)); +} + +static inline void +get_inaddr(ip_addr *a, struct in6_addr *ia) +{ + memcpy(a, ia, sizeof(*a)); + ipa_ntoh(*a); } #else #include <net/if.h> +#include <net/if_dl.h> static inline void set_inaddr(struct in_addr * ia, ip_addr a) { - ipa_hton(a); - memcpy(&ia->s_addr, &a, sizeof(a)); + ipa_hton(a); + memcpy(&ia->s_addr, &a, sizeof(a)); +} + +static inline void +get_inaddr(ip_addr *a, struct in_addr *ia) +{ + memcpy(a, &ia->s_addr, sizeof(*a)); + ipa_ntoh(*a); } + +/* BSD Multicast handling for IPv4 */ + static inline char * sysio_setup_multicast(sock *s) { @@ -80,6 +98,90 @@ sysio_leave_group(sock *s, ip_addr maddr) return NULL; } + +/* BSD RX/TX packet info handling for IPv4 */ +/* it uses IP_RECVDSTADDR / IP_RECVIF socket options instead of IP_PKTINFO */ + +#define CMSG_RX_SPACE (CMSG_SPACE(sizeof(struct in_addr)) + CMSG_SPACE(sizeof(struct sockaddr_dl))) +#define CMSG_TX_SPACE CMSG_SPACE(sizeof(struct in_addr)) + +static char * +sysio_register_cmsgs(sock *s) +{ + int ok = 1; + if (s->flags & SKF_LADDR_RX) + { + if (setsockopt(s->fd, IPPROTO_IP, IP_RECVDSTADDR, &ok, sizeof(ok)) < 0) + return "IP_RECVDSTADDR"; + + if (setsockopt(s->fd, IPPROTO_IP, IP_RECVIF, &ok, sizeof(ok)) < 0) + return "IP_RECVIF"; + } + + return NULL; +} + +static void +sysio_process_rx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + + if (!(s->flags & SKF_LADDR_RX)) + return; + + s->laddr = IPA_NONE; + s->lifindex = 0; + + for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm)) + { + if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_RECVDSTADDR) + { + struct in_addr *ra = (struct in_addr *) CMSG_DATA(cm); + get_inaddr(&s->laddr, ra); + } + + if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_RECVIF) + { + struct sockaddr_dl *ri = (struct sockaddr_dl *) CMSG_DATA(cm); + s->lifindex = ri->sdl_index; + } + } + + // log(L_WARN "RX %I %d", s->laddr, s->lifindex); +} + + +void +sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + struct in_addr *sa; + + if (!(s->flags & SKF_LADDR_TX)) + { + msg->msg_controllen = 0; + return; + } + + if (s->iface) + { + struct in_addr m; +// set_inaddr(&m, s->iface->addr->ip); + set_inaddr(&m, s->saddr); + setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m)); + } + + cm = CMSG_FIRSTHDR(msg); + cm->cmsg_level = IPPROTO_IP; + cm->cmsg_type = IP_SENDSRCADDR; + cm->cmsg_len = CMSG_LEN(sizeof(*sa)); + + sa = (struct in_addr *) CMSG_DATA(cm); + set_inaddr(sa, s->saddr); + + msg->msg_controllen = cm->cmsg_len; +} + #endif diff --git a/sysdep/linux/sysio.h b/sysdep/linux/sysio.h index 7fe3566b..94be002f 100644 --- a/sysdep/linux/sysio.h +++ b/sysdep/linux/sysio.h @@ -21,6 +21,13 @@ set_inaddr(struct in6_addr *ia, ip_addr a) memcpy(ia, &a, sizeof(a)); } +static inline void +get_inaddr(ip_addr *a, struct in6_addr *ia) +{ + memcpy(a, ia, sizeof(*a)); + ipa_ntoh(*a); +} + #else #include <net/if.h> @@ -32,6 +39,13 @@ set_inaddr(struct in_addr *ia, ip_addr a) memcpy(&ia->s_addr, &a, sizeof(a)); } +static inline void +get_inaddr(ip_addr *a, struct in_addr *ia) +{ + memcpy(a, &ia->s_addr, sizeof(*a)); + ipa_ntoh(*a); +} + /* * Multicasting in Linux systems is a real mess. Not only different kernels * have different interfaces, but also different libc's export it in different @@ -209,3 +223,76 @@ sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd) return rv; } + + +#ifndef IPV6 + +/* RX/TX packet info handling for IPv4 */ +/* Mostly similar to standardized IPv6 code */ + +#define CMSG_RX_SPACE CMSG_SPACE(sizeof(struct in_pktinfo)) +#define CMSG_TX_SPACE CMSG_SPACE(sizeof(struct in_pktinfo)) + +static char * +sysio_register_cmsgs(sock *s) +{ + int ok = 1; + if ((s->flags & SKF_LADDR_RX) && + setsockopt(s->fd, IPPROTO_IP, IP_PKTINFO, &ok, sizeof(ok)) < 0) + return "IP_PKTINFO"; + + return NULL; +} + +static void +sysio_process_rx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + struct in_pktinfo *pi = NULL; + + if (!(s->flags & SKF_LADDR_RX)) + return; + + for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm)) + { + if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_PKTINFO) + pi = (struct in_pktinfo *) CMSG_DATA(cm); + } + + if (!pi) + { + s->laddr = IPA_NONE; + s->lifindex = 0; + return; + } + + get_inaddr(&s->laddr, &pi->ipi_addr); + s->lifindex = pi->ipi_ifindex; + return; +} + + +void +sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + struct in_pktinfo *pi; + + if (!(s->flags & SKF_LADDR_TX)) + { + msg->msg_controllen = 0; + return; + } + + cm = CMSG_FIRSTHDR(msg); + cm->cmsg_level = IPPROTO_IP; + cm->cmsg_type = IP_PKTINFO; + cm->cmsg_len = CMSG_LEN(sizeof(*pi)); + + pi = (struct in_pktinfo *) CMSG_DATA(cm); + set_inaddr(&pi->ipi_spec_dst, s->saddr); + pi->ipi_ifindex = s->iface ? s->iface->index : 0; + + msg->msg_controllen = cm->cmsg_len; +} +#endif diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c index 02d59abb..c7527c97 100644 --- a/sysdep/unix/io.c +++ b/sysdep/unix/io.c @@ -685,7 +685,7 @@ static char * sk_setup(sock *s) { int fd = s->fd; - char *err; + char *err = NULL; if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) ERR("fcntl(O_NONBLOCK)"); @@ -704,9 +704,8 @@ sk_setup(sock *s) if (s->ttl >= 0) err = sk_set_ttl_int(s); - else - err = NULL; + sysio_register_cmsgs(s); bad: return err; } @@ -857,6 +856,72 @@ sk_leave_group(sock *s, ip_addr maddr) return 0; } +/* PKTINFO handling is also standardized in IPv6 */ +#define CMSG_RX_SPACE CMSG_SPACE(sizeof(struct in6_pktinfo)) + +static char * +sysio_register_cmsgs(sock *s) +{ + int ok = 1; + if ((s->flags & SKF_LADDR_RX) && + setsockopt(s->fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &ok, sizeof(ok)) < 0) + return "IPV6_RECVPKTINFO"; + + return NULL; +} + +void +sysio_process_rx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + struct in6_pktinfo *pi = NULL; + + if (!(s->flags & SKF_LADDR_RX)) + return; + + for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm)) + { + if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PKTINFO) + pi = (struct in6_pktinfo *) CMSG_DATA(cm); + } + + if (!pi) + { + s->laddr = IPA_NONE; + s->lifindex = 0; + return; + } + + get_inaddr(&s->laddr, &pi->ipi6_addr); + s->lifindex = pi->ipi6_ifindex; + return; +} + +void +sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg) +{ + struct cmsghdr *cm; + struct in6_pktinfo *pi; + + if (!(s->flags & SKF_LADDR_TX)) + { + msg->msg_controllen = 0; + return; + } + + cm = CMSG_FIRSTHDR(msg); + cm->cmsg_level = IPPROTO_IPV6; + cm->cmsg_type = PIV6_PKTINFO; + cm->cmsg_len = CMSG_LEN(sizeof(*pi)); + + pi = (struct in6_pktinfo *) CMSG_DATA(cm); + set_inaddr(&pi->ipi6_addr, s->saddr); + pi->ipi6_ifindex = s->iface ? s->iface->index : 0; + + msg->msg_controllen = cmsg->cmsg_len; + return; +} + #else /* IPV4 */ int @@ -1109,6 +1174,8 @@ bad: return -1; } +static inline void reset_tx_buffer(sock *s) { s->ttx = s->tpos = s->tbuf; } + static int sk_maybe_write(sock *s) { @@ -1126,7 +1193,7 @@ sk_maybe_write(sock *s) { if (errno != EINTR && errno != EAGAIN) { - s->ttx = s->tpos; /* empty tx buffer */ + reset_tx_buffer(s); s->err_hook(s, errno); return -1; } @@ -1134,30 +1201,44 @@ sk_maybe_write(sock *s) } s->ttx += e; } - s->ttx = s->tpos = s->tbuf; + reset_tx_buffer(s); return 1; case SK_UDP: case SK_IP: { - sockaddr sa; - if (s->tbuf == s->tpos) return 1; - fill_in_sockaddr(&sa, s->faddr, s->fport); + sockaddr sa; + fill_in_sockaddr(&sa, s->daddr, s->dport); fill_in_sockifa(&sa, s->iface); - e = sendto(s->fd, s->tbuf, s->tpos - s->tbuf, 0, (struct sockaddr *) &sa, sizeof(sa)); + + struct iovec iov = {s->tbuf, s->tpos - s->tbuf}; + byte cmsg_buf[CMSG_TX_SPACE]; + + struct msghdr msg = { + .msg_name = &sa, + .msg_namelen = sizeof(sa), + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = cmsg_buf, + .msg_controllen = sizeof(cmsg_buf), + .msg_flags = 0}; + + sysio_prepare_tx_cmsgs(s, &msg); + e = sendmsg(s->fd, &msg, 0); + if (e < 0) { if (errno != EINTR && errno != EAGAIN) { - s->ttx = s->tpos; /* empty tx buffer */ + reset_tx_buffer(s); s->err_hook(s, errno); return -1; } return 0; } - s->tpos = s->tbuf; + reset_tx_buffer(s); return 1; } default: @@ -1203,8 +1284,6 @@ sk_rx_ready(sock *s) int sk_send(sock *s, unsigned len) { - s->faddr = s->daddr; - s->fport = s->dport; s->ttx = s->tbuf; s->tpos = s->tbuf + len; return sk_maybe_write(s); @@ -1223,13 +1302,28 @@ sk_send(sock *s, unsigned len) int sk_send_to(sock *s, unsigned len, ip_addr addr, unsigned port) { - s->faddr = addr; - s->fport = port; + s->daddr = addr; + s->dport = port; s->ttx = s->tbuf; s->tpos = s->tbuf + len; return sk_maybe_write(s); } +/* +int +sk_send_full(sock *s, unsigned len, struct iface *ifa, + ip_addr saddr, ip_addr daddr, unsigned dport) +{ + s->iface = ifa; + s->saddr = saddr; + s->daddr = daddr; + s->dport = dport; + s->ttx = s->tbuf; + s->tpos = s->tbuf + len; + return sk_maybe_write(s); +} +*/ + static int sk_read(sock *s) { @@ -1275,8 +1369,21 @@ sk_read(sock *s) default: { sockaddr sa; - int al = sizeof(sa); - int e = recvfrom(s->fd, s->rbuf, s->rbsize, 0, (struct sockaddr *) &sa, &al); + int e; + + struct iovec iov = {s->rbuf, s->rbsize}; + byte cmsg_buf[CMSG_RX_SPACE]; + + struct msghdr msg = { + .msg_name = &sa, + .msg_namelen = sizeof(sa), + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = cmsg_buf, + .msg_controllen = sizeof(cmsg_buf), + .msg_flags = 0}; + + e = recvmsg(s->fd, &msg, 0); if (e < 0) { @@ -1286,6 +1393,8 @@ sk_read(sock *s) } s->rpos = s->rbuf + e; get_sockaddr(&sa, &s->faddr, &s->fport, 1); + sysio_process_rx_cmsgs(s, &msg); + s->rx_hook(s, e); return 1; } |