X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/74967abeca9a78ad4a1b7a953fd67988cfb67895..0247ea133b707931ce7e33516332dbcfcf6dadb7:/bgp.c diff --git a/bgp.c b/bgp.c index 2d411e7..cf8ab7e 100644 --- a/bgp.c +++ b/bgp.c @@ -10,7 +10,7 @@ * nor RFC2385 (which requires a kernel patch on 2.4 kernels). */ -char const *cvs_id_bgp = "$Id: bgp.c,v 1.6 2004/11/11 03:07:42 bodea Exp $"; +char const *cvs_id_bgp = "$Id: bgp.c,v 1.8 2004/11/29 02:17:17 bodea Exp $"; #include #include @@ -69,7 +69,7 @@ int bgp_setup(int as) if (!((peer->outbuf = malloc(sizeof(*peer->outbuf))) && (peer->inbuf = malloc(sizeof(*peer->inbuf))))) { - LOG(0, 0, 0, 0, "Can't allocate buffers for bgp peer (%s)\n", + LOG(0, 0, 0, "Can't allocate buffers for bgp peer (%s)\n", strerror(errno)); return 0; @@ -111,7 +111,7 @@ int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive, int hold if (!(h = gethostbyname(name)) || h->h_addrtype != AF_INET) { - LOG(0, 0, 0, 0, "Can't get address for BGP peer %s (%s)\n", + LOG(0, 0, 0, "Can't get address for BGP peer %s (%s)\n", name, h ? "no address" : hstrerror(h_errno)); return 0; @@ -225,7 +225,7 @@ int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive, int hold if (!(peer->path_attrs = malloc(peer->path_attr_len))) { - LOG(0, 0, 0, 0, "Can't allocate path_attrs for %s (%s)\n", + LOG(0, 0, 0, "Can't allocate path_attrs for %s (%s)\n", name, strerror(errno)); return 0; @@ -233,7 +233,7 @@ int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive, int hold memcpy(peer->path_attrs, path_attrs, peer->path_attr_len); - LOG(4, 0, 0, 0, "Initiating BGP connection to %s (routing %s)\n", + LOG(4, 0, 0, "Initiating BGP connection to %s (routing %s)\n", name, enable ? "enabled" : "suspended"); /* we have at least one peer configured */ @@ -274,7 +274,7 @@ static void bgp_clear(struct bgp_peer *peer) peer->state = peer->next_state; peer->state_time = time_now; - LOG(4, 0, 0, 0, "BGP peer %s: state %s\n", peer->name, + LOG(4, 0, 0, "BGP peer %s: state %s\n", peer->name, bgp_state_str(peer->next_state)); } } @@ -282,14 +282,14 @@ static void bgp_clear(struct bgp_peer *peer) /* initiate a clean shutdown */ void bgp_stop(struct bgp_peer *peer) { - LOG(4, 0, 0, 0, "Terminating BGP connection to %s\n", peer->name); + LOG(4, 0, 0, "Terminating BGP connection to %s\n", peer->name); bgp_send_notification(peer, BGP_ERR_CEASE, 0); } /* drop connection (if any) and set state to Disabled */ void bgp_halt(struct bgp_peer *peer) { - LOG(4, 0, 0, 0, "Aborting BGP connection to %s\n", peer->name); + LOG(4, 0, 0, "Aborting BGP connection to %s\n", peer->name); peer->next_state = Disabled; bgp_clear(peer); } @@ -399,8 +399,8 @@ int bgp_add_route(in_addr_t ip, in_addr_t mask) /* insert into route list; sorted */ if (!(r = malloc(sizeof(*r)))) { - LOG(0, 0, 0, 0, "Can't allocate route for %s/%d (%s)\n", - inet_toa(add.dest.prefix), add.dest.len, strerror(errno)); + LOG(0, 0, 0, "Can't allocate route for %s/%d (%s)\n", + fmtaddr(add.dest.prefix, 0), add.dest.len, strerror(errno)); return 0; } @@ -413,8 +413,8 @@ int bgp_add_route(in_addr_t ip, in_addr_t mask) if (bgp_peers[i].state == Established) bgp_peers[i].update_routes = 1; - LOG(4, 0, 0, 0, "Registered BGP route %s/%d\n", inet_toa(add.dest.prefix), - add.dest.len); + LOG(4, 0, 0, "Registered BGP route %s/%d\n", + fmtaddr(add.dest.prefix, 0), add.dest.len); return 1; } @@ -462,8 +462,8 @@ int bgp_del_route(in_addr_t ip, in_addr_t mask) if (bgp_peers[i].state == Established) bgp_peers[i].update_routes = 1; - LOG(4, 0, 0, 0, "Removed BGP route %s/%d\n", inet_toa(del.dest.prefix), - del.dest.len); + LOG(4, 0, 0, "Removed BGP route %s/%d\n", + fmtaddr(del.dest.prefix, 0), del.dest.len); return 1; } @@ -482,7 +482,7 @@ void bgp_enable_routing(int enable) bgp_peers[i].update_routes = 1; } - LOG(4, 0, 0, 0, "%s BGP routing\n", enable ? "Enabled" : "Suspended"); + LOG(4, 0, 0, "%s BGP routing\n", enable ? "Enabled" : "Suspended"); } /* return a bitmask indicating if the socket should be added to the @@ -588,7 +588,7 @@ int bgp_process(struct bgp_peer *peer, int readable, int writable) { if (time_now > peer->expire_time) { - LOG(1, 0, 0, 0, "No message from BGP peer %s in %ds\n", + LOG(1, 0, 0, "No message from BGP peer %s in %ds\n", peer->name, peer->hold); bgp_send_notification(peer, BGP_ERR_HOLD_TIMER_EXP, 0); @@ -605,7 +605,7 @@ int bgp_process(struct bgp_peer *peer, int readable, int writable) } else if (time_now > peer->state_time + BGP_STATE_TIME) { - LOG(1, 0, 0, 0, "%s timer expired for BGP peer %s\n", + LOG(1, 0, 0, "%s timer expired for BGP peer %s\n", bgp_state_str(peer->state), peer->name); return bgp_restart(peer); @@ -665,7 +665,7 @@ static int bgp_connect(struct bgp_peer *peer) struct servent *serv; if (!(serv = getservbyname("bgp", "tcp"))) { - LOG(0, 0, 0, 0, "Can't get bgp service (%s)\n", strerror(errno)); + LOG(0, 0, 0, "Can't get bgp service (%s)\n", strerror(errno)); return 0; } @@ -674,7 +674,7 @@ static int bgp_connect(struct bgp_peer *peer) if ((peer->sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) { - LOG(0, 0, 0, 0, "Can't create a socket for BGP peer %s (%s)\n", + LOG(0, 0, 0, "Can't create a socket for BGP peer %s (%s)\n", peer->name, strerror(errno)); peer->state = peer->next_state = Disabled; @@ -697,7 +697,7 @@ static int bgp_connect(struct bgp_peer *peer) if (errno != EINPROGRESS) { - LOG(1, 0, 0, 0, "Can't connect to BGP peer %s (%s)\n", + LOG(1, 0, 0, "Can't connect to BGP peer %s (%s)\n", inet_ntoa(addr.sin_addr), strerror(errno)); bgp_set_retry(peer); @@ -707,7 +707,7 @@ static int bgp_connect(struct bgp_peer *peer) peer->state = Connect; peer->state_time = time_now; - LOG(4, 0, 0, 0, "BGP peer %s: state Connect\n", peer->name); + LOG(4, 0, 0, "BGP peer %s: state Connect\n", peer->name); return 1; } @@ -715,7 +715,7 @@ static int bgp_connect(struct bgp_peer *peer) peer->state_time = time_now; peer->retry_time = peer->retry_count = 0; - LOG(4, 0, 0, 0, "BGP peer %s: state Active\n", inet_ntoa(addr.sin_addr)); + LOG(4, 0, 0, "BGP peer %s: state Active\n", inet_ntoa(addr.sin_addr)); return bgp_send_open(peer); } @@ -728,7 +728,7 @@ static int bgp_handle_connect(struct bgp_peer *peer) getsockopt(peer->sock, SOL_SOCKET, SO_ERROR, &err, &len); if (err) { - LOG(1, 0, 0, 0, "Can't connect to BGP peer %s (%s)\n", peer->name, + LOG(1, 0, 0, "Can't connect to BGP peer %s (%s)\n", peer->name, strerror(err)); bgp_set_retry(peer); @@ -738,7 +738,7 @@ static int bgp_handle_connect(struct bgp_peer *peer) peer->state = Active; peer->state_time = time_now; - LOG(4, 0, 0, 0, "BGP peer %s: state Active\n", peer->name); + LOG(4, 0, 0, "BGP peer %s: state Active\n", peer->name); return bgp_send_open(peer); } @@ -759,9 +759,9 @@ static int bgp_write(struct bgp_peer *peer) return 1; if (errno == EPIPE) - LOG(1, 0, 0, 0, "Connection to BGP peer %s closed\n", peer->name); + LOG(1, 0, 0, "Connection to BGP peer %s closed\n", peer->name); else - LOG(1, 0, 0, 0, "Can't write to BGP peer %s (%s)\n", peer->name, + LOG(1, 0, 0, "Can't write to BGP peer %s (%s)\n", peer->name, strerror(errno)); bgp_set_retry(peer); @@ -774,7 +774,7 @@ static int bgp_write(struct bgp_peer *peer) return 1; } - LOG(4, 0, 0, 0, "Sent %s to BGP peer %s\n", + LOG(4, 0, 0, "Sent %s to BGP peer %s\n", bgp_msg_type_str(peer->outbuf->packet.header.type), peer->name); peer->outbuf->packet.header.len = 0; @@ -794,7 +794,7 @@ static int bgp_write(struct bgp_peer *peer) peer->state = peer->next_state; peer->state_time = time_now; - LOG(4, 0, 0, 0, "BGP peer %s: state %s\n", peer->name, + LOG(4, 0, 0, "BGP peer %s: state %s\n", peer->name, bgp_state_str(peer->state)); } @@ -811,7 +811,7 @@ static int bgp_read(struct bgp_peer *peer) { if (!r) { - LOG(1, 0, 0, 0, "Connection to BGP peer %s closed\n", peer->name); + LOG(1, 0, 0, "Connection to BGP peer %s closed\n", peer->name); } else { @@ -821,7 +821,7 @@ static int bgp_read(struct bgp_peer *peer) if (errno == EAGAIN) return 1; - LOG(1, 0, 0, 0, "Can't read from BGP peer %s (%s)\n", peer->name, + LOG(1, 0, 0, "Can't read from BGP peer %s (%s)\n", peer->name, strerror(errno)); } @@ -841,7 +841,7 @@ static int bgp_handle_input(struct bgp_peer *peer) if (len > BGP_MAX_PACKET_SIZE) { - LOG(1, 0, 0, 0, "Bad header length from BGP %s\n", peer->name); + LOG(1, 0, 0, "Bad header length from BGP %s\n", peer->name); bgp_send_notification(peer, BGP_ERR_HEADER, BGP_ERR_HDR_BAD_LEN); return 0; } @@ -849,7 +849,7 @@ static int bgp_handle_input(struct bgp_peer *peer) if (peer->inbuf->done < len) return 0; - LOG(4, 0, 0, 0, "Received %s from BGP peer %s\n", + LOG(4, 0, 0, "Received %s from BGP peer %s\n", bgp_msg_type_str(p->header.type), peer->name); switch (p->header.type) @@ -857,13 +857,14 @@ static int bgp_handle_input(struct bgp_peer *peer) case BGP_MSG_OPEN: { struct bgp_data_open data; + int hold; int i; for (i = 0; i < sizeof(p->header.marker); i++) { if ((unsigned char) p->header.marker[i] != 0xff) { - LOG(1, 0, 0, 0, "Invalid marker from BGP peer %s\n", + LOG(1, 0, 0, "Invalid marker from BGP peer %s\n", peer->name); bgp_send_notification(peer, BGP_ERR_HEADER, @@ -875,7 +876,7 @@ static int bgp_handle_input(struct bgp_peer *peer) if (peer->state != OpenSent) { - LOG(1, 0, 0, 0, "OPEN from BGP peer %s in %s state\n", + LOG(1, 0, 0, "OPEN from BGP peer %s in %s state\n", peer->name, bgp_state_str(peer->state)); bgp_send_notification(peer, BGP_ERR_FSM, 0); @@ -886,7 +887,7 @@ static int bgp_handle_input(struct bgp_peer *peer) if (data.version != BGP_VERSION) { - LOG(1, 0, 0, 0, "Bad version (%d) sent by BGP peer %s\n", + LOG(1, 0, 0, "Bad version (%d) sent by BGP peer %s\n", (int) data.version, peer->name); bgp_send_notification(peer, BGP_ERR_OPEN, BGP_ERR_OPN_VERSION); @@ -895,7 +896,7 @@ static int bgp_handle_input(struct bgp_peer *peer) if (ntohs(data.as) != peer->as) { - LOG(1, 0, 0, 0, "Bad AS sent by BGP peer %s (got %d, " + LOG(1, 0, 0, "Bad AS sent by BGP peer %s (got %d, " "expected %d)\n", peer->name, (int) htons(data.as), (int) peer->as); @@ -903,15 +904,19 @@ static int bgp_handle_input(struct bgp_peer *peer) return 0; } - if ((peer->hold = ntohs(data.hold_time)) < 3) + if ((hold = ntohs(data.hold_time)) < 3) { - LOG(1, 0, 0, 0, "Bad hold time (%d) from BGP peer %s\n", - peer->hold, peer->name); + LOG(1, 0, 0, "Bad hold time (%d) from BGP peer %s\n", + hold, peer->name); bgp_send_notification(peer, BGP_ERR_OPEN, BGP_ERR_OPN_HOLD_TIME); return 0; } + /* pick lowest hold time */ + if (hold < peer->hold) + peer->hold = hold; + /* adjust our keepalive based on negotiated hold value */ if (peer->keepalive * 3 > peer->hold) peer->keepalive = peer->hold / 3; @@ -934,7 +939,7 @@ static int bgp_handle_input(struct bgp_peer *peer) peer->retry_count = 0; peer->retry_time = 0; - LOG(4, 0, 0, 0, "BGP peer %s: state Established\n", peer->name); + LOG(4, 0, 0, "BGP peer %s: state Established\n", peer->name); } break; @@ -947,13 +952,13 @@ static int bgp_handle_input(struct bgp_peer *peer) if (notification->error_code == BGP_ERR_CEASE) { - LOG(4, 0, 0, 0, "BGP peer %s sent CEASE\n", peer->name); + LOG(4, 0, 0, "BGP peer %s sent CEASE\n", peer->name); bgp_halt(peer); return 0; } /* FIXME: should handle more notifications */ - LOG(4, 0, 0, 0, "BGP peer %s sent unhandled NOTIFICATION %d\n", + LOG(4, 0, 0, "BGP peer %s sent unhandled NOTIFICATION %d\n", peer->name, (int) notification->error_code); } @@ -1072,8 +1077,8 @@ static int bgp_send_update(struct bgp_peer *peer) unf_len += s; len += s; - LOG(5, 0, 0, 0, "Withdrawing route %s/%d from BGP peer %s\n", - inet_toa(tmp->dest.prefix), tmp->dest.len, peer->name); + LOG(5, 0, 0, "Withdrawing route %s/%d from BGP peer %s\n", + fmtaddr(tmp->dest.prefix, 0), tmp->dest.len, peer->name); free(tmp); @@ -1122,8 +1127,8 @@ static int bgp_send_update(struct bgp_peer *peer) { if (!(e = malloc(sizeof(*e)))) { - LOG(0, 0, 0, 0, "Can't allocate route for %s/%d (%s)\n", - inet_toa(add->dest.prefix), add->dest.len, strerror(errno)); + LOG(0, 0, 0, "Can't allocate route for %s/%d (%s)\n", + fmtaddr(add->dest.prefix, 0), add->dest.len, strerror(errno)); return 0; } @@ -1146,8 +1151,8 @@ static int bgp_send_update(struct bgp_peer *peer) data += s; len += s; - LOG(5, 0, 0, 0, "Advertising route %s/%d to BGP peer %s\n", - inet_toa(add->dest.prefix), add->dest.len, peer->name); + LOG(5, 0, 0, "Advertising route %s/%d to BGP peer %s\n", + fmtaddr(add->dest.prefix, 0), add->dest.len, peer->name); } else {