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Commit | Line | Data |
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718e3744 | 1 | /* BGP network related fucntions |
2 | Copyright (C) 1999 Kunihiro Ishiguro | |
3 | ||
4 | This file is part of GNU Zebra. | |
5 | ||
6 | GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | GNU Zebra is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "thread.h" | |
24 | #include "sockunion.h" | |
0df7c91f | 25 | #include "sockopt.h" |
718e3744 | 26 | #include "memory.h" |
27 | #include "log.h" | |
28 | #include "if.h" | |
29 | #include "prefix.h" | |
30 | #include "command.h" | |
edd7c245 | 31 | #include "privs.h" |
0df7c91f | 32 | #include "linklist.h" |
fdbc8e77 | 33 | #include "network.h" |
718e3744 | 34 | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_fsm.h" | |
37 | #include "bgpd/bgp_attr.h" | |
38 | #include "bgpd/bgp_debug.h" | |
39 | #include "bgpd/bgp_network.h" | |
edd7c245 | 40 | |
41 | extern struct zebra_privs_t bgpd_privs; | |
42 | ||
d023aec4 SH |
43 | /* BGP listening socket. */ |
44 | struct bgp_listener | |
45 | { | |
46 | int fd; | |
47 | union sockunion su; | |
48 | struct thread *thread; | |
49 | }; | |
0df7c91f PJ |
50 | \f |
51 | /* | |
52 | * Set MD5 key for the socket, for the given IPv4 peer address. | |
53 | * If the password is NULL or zero-length, the option will be disabled. | |
54 | */ | |
55 | static int | |
56 | bgp_md5_set_socket (int socket, union sockunion *su, const char *password) | |
57 | { | |
58 | int ret = -1; | |
59 | int en = ENOSYS; | |
60 | ||
61 | assert (socket >= 0); | |
62 | ||
63 | #if HAVE_DECL_TCP_MD5SIG | |
64 | ret = sockopt_tcp_signature (socket, su, password); | |
65 | en = errno; | |
66 | #endif /* HAVE_TCP_MD5SIG */ | |
67 | ||
68 | if (ret < 0) | |
69 | zlog (NULL, LOG_WARNING, "can't set TCP_MD5SIG option on socket %d: %s", | |
70 | socket, safe_strerror (en)); | |
71 | ||
72 | return ret; | |
73 | } | |
74 | ||
75 | /* Helper for bgp_connect */ | |
76 | static int | |
77 | bgp_md5_set_connect (int socket, union sockunion *su, const char *password) | |
78 | { | |
79 | int ret = -1; | |
80 | ||
81 | #if HAVE_DECL_TCP_MD5SIG | |
82 | if ( bgpd_privs.change (ZPRIVS_RAISE) ) | |
83 | { | |
84 | zlog_err ("%s: could not raise privs", __func__); | |
85 | return ret; | |
86 | } | |
87 | ||
88 | ret = bgp_md5_set_socket (socket, su, password); | |
89 | ||
90 | if (bgpd_privs.change (ZPRIVS_LOWER) ) | |
91 | zlog_err ("%s: could not lower privs", __func__); | |
92 | #endif /* HAVE_TCP_MD5SIG */ | |
93 | ||
94 | return ret; | |
95 | } | |
96 | ||
97 | int | |
98 | bgp_md5_set (struct peer *peer) | |
99 | { | |
100 | struct listnode *node; | |
d1c21cab SH |
101 | int ret = 0; |
102 | struct bgp_listener *listener; | |
0df7c91f PJ |
103 | |
104 | if ( bgpd_privs.change (ZPRIVS_RAISE) ) | |
105 | { | |
106 | zlog_err ("%s: could not raise privs", __func__); | |
107 | return -1; | |
108 | } | |
109 | ||
110 | /* Just set the password on the listen socket(s). Outbound connections | |
111 | * are taken care of in bgp_connect() below. | |
112 | */ | |
d1c21cab SH |
113 | for (ALL_LIST_ELEMENTS_RO(bm->listen_sockets, node, listener)) |
114 | if (listener->su.sa.sa_family == peer->su.sa.sa_family) | |
115 | { | |
116 | ret = bgp_md5_set_socket (listener->fd, &peer->su, peer->password); | |
117 | break; | |
118 | } | |
119 | ||
0df7c91f PJ |
120 | if (bgpd_privs.change (ZPRIVS_LOWER) ) |
121 | zlog_err ("%s: could not lower privs", __func__); | |
122 | ||
d1c21cab | 123 | return ret; |
0df7c91f | 124 | } |
718e3744 | 125 | \f |
126 | /* Accept bgp connection. */ | |
127 | static int | |
128 | bgp_accept (struct thread *thread) | |
129 | { | |
130 | int bgp_sock; | |
131 | int accept_sock; | |
132 | union sockunion su; | |
5bd58818 | 133 | struct bgp_listener *listener = THREAD_ARG(thread); |
718e3744 | 134 | struct peer *peer; |
eb821189 | 135 | struct peer *peer1; |
718e3744 | 136 | char buf[SU_ADDRSTRLEN]; |
137 | ||
5bd58818 | 138 | /* Register accept thread. */ |
718e3744 | 139 | accept_sock = THREAD_FD (thread); |
718e3744 | 140 | if (accept_sock < 0) |
141 | { | |
142 | zlog_err ("accept_sock is nevative value %d", accept_sock); | |
143 | return -1; | |
144 | } | |
5bd58818 | 145 | listener->thread = thread_add_read (master, bgp_accept, listener, accept_sock); |
718e3744 | 146 | |
147 | /* Accept client connection. */ | |
148 | bgp_sock = sockunion_accept (accept_sock, &su); | |
149 | if (bgp_sock < 0) | |
150 | { | |
6099b3b5 | 151 | zlog_err ("[Error] BGP socket accept failed (%s)", safe_strerror (errno)); |
718e3744 | 152 | return -1; |
153 | } | |
35398589 | 154 | set_nonblocking (bgp_sock); |
718e3744 | 155 | |
156 | if (BGP_DEBUG (events, EVENTS)) | |
478ba054 | 157 | zlog_debug ("[Event] BGP connection from host %s", inet_sutop (&su, buf)); |
718e3744 | 158 | |
159 | /* Check remote IP address */ | |
5bd58818 | 160 | peer1 = peer_lookup (NULL, &su); |
eb821189 | 161 | if (! peer1 || peer1->status == Idle) |
718e3744 | 162 | { |
163 | if (BGP_DEBUG (events, EVENTS)) | |
164 | { | |
eb821189 | 165 | if (! peer1) |
478ba054 | 166 | zlog_debug ("[Event] BGP connection IP address %s is not configured", |
718e3744 | 167 | inet_sutop (&su, buf)); |
168 | else | |
478ba054 | 169 | zlog_debug ("[Event] BGP connection IP address %s is Idle state", |
718e3744 | 170 | inet_sutop (&su, buf)); |
171 | } | |
172 | close (bgp_sock); | |
173 | return -1; | |
174 | } | |
175 | ||
176 | /* In case of peer is EBGP, we should set TTL for this connection. */ | |
6d85b15b | 177 | if (peer1->sort == BGP_PEER_EBGP) { |
eb821189 | 178 | sockopt_ttl (peer1->su.sa.sa_family, bgp_sock, peer1->ttl); |
fa411a21 NH |
179 | if (peer1->gtsm_hops) |
180 | sockopt_minttl (peer1->su.sa.sa_family, bgp_sock, MAXTTL + 1 - peer1->gtsm_hops); | |
181 | } | |
718e3744 | 182 | |
eb821189 | 183 | /* Make dummy peer until read Open packet. */ |
184 | if (BGP_DEBUG (events, EVENTS)) | |
478ba054 | 185 | zlog_debug ("[Event] Make dummy peer structure until read Open packet"); |
eb821189 | 186 | |
187 | { | |
682ca04c | 188 | char buf[SU_ADDRSTRLEN]; |
eb821189 | 189 | |
5bd58818 | 190 | peer = peer_create_accept (peer1->bgp); |
eb821189 | 191 | SET_FLAG (peer->sflags, PEER_STATUS_ACCEPT_PEER); |
192 | peer->su = su; | |
193 | peer->fd = bgp_sock; | |
194 | peer->status = Active; | |
195 | peer->local_id = peer1->local_id; | |
e8eb000e TT |
196 | peer->v_holdtime = peer1->v_holdtime; |
197 | peer->v_keepalive = peer1->v_keepalive; | |
718e3744 | 198 | |
eb821189 | 199 | /* Make peer's address string. */ |
200 | sockunion2str (&su, buf, SU_ADDRSTRLEN); | |
e83e2080 | 201 | peer->host = XSTRDUP (MTYPE_BGP_PEER_HOST, buf); |
eb821189 | 202 | } |
718e3744 | 203 | |
204 | BGP_EVENT_ADD (peer, TCP_connection_open); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | /* BGP socket bind. */ | |
94f2b392 | 210 | static int |
718e3744 | 211 | bgp_bind (struct peer *peer) |
212 | { | |
213 | #ifdef SO_BINDTODEVICE | |
214 | int ret; | |
215 | struct ifreq ifreq; | |
216 | ||
217 | if (! peer->ifname) | |
218 | return 0; | |
219 | ||
220 | strncpy ((char *)&ifreq.ifr_name, peer->ifname, sizeof (ifreq.ifr_name)); | |
221 | ||
98f5163c | 222 | if ( bgpd_privs.change (ZPRIVS_RAISE) ) |
223 | zlog_err ("bgp_bind: could not raise privs"); | |
224 | ||
eb821189 | 225 | ret = setsockopt (peer->fd, SOL_SOCKET, SO_BINDTODEVICE, |
718e3744 | 226 | &ifreq, sizeof (ifreq)); |
98f5163c | 227 | |
228 | if (bgpd_privs.change (ZPRIVS_LOWER) ) | |
229 | zlog_err ("bgp_bind: could not lower privs"); | |
230 | ||
718e3744 | 231 | if (ret < 0) |
232 | { | |
233 | zlog (peer->log, LOG_INFO, "bind to interface %s failed", peer->ifname); | |
234 | return ret; | |
235 | } | |
236 | #endif /* SO_BINDTODEVICE */ | |
237 | return 0; | |
238 | } | |
239 | ||
1727d2e2 DL |
240 | static int |
241 | bgp_update_address (struct interface *ifp, const union sockunion *dst, | |
242 | union sockunion *addr) | |
718e3744 | 243 | { |
1727d2e2 | 244 | struct prefix *p, *sel, *d; |
718e3744 | 245 | struct connected *connected; |
52dc7ee6 | 246 | struct listnode *node; |
1727d2e2 DL |
247 | int common; |
248 | ||
249 | d = sockunion2hostprefix (dst); | |
250 | sel = NULL; | |
251 | common = -1; | |
718e3744 | 252 | |
1eb8ef25 | 253 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) |
718e3744 | 254 | { |
1727d2e2 DL |
255 | p = connected->address; |
256 | if (p->family != d->family) | |
257 | continue; | |
258 | if (prefix_common_bits (p, d) > common) | |
259 | { | |
260 | sel = p; | |
261 | common = prefix_common_bits (sel, d); | |
262 | } | |
718e3744 | 263 | } |
1727d2e2 DL |
264 | |
265 | prefix_free (d); | |
266 | if (!sel) | |
267 | return 1; | |
268 | ||
269 | prefix2sockunion (sel, addr); | |
270 | return 0; | |
718e3744 | 271 | } |
272 | ||
273 | /* Update source selection. */ | |
94f2b392 | 274 | static void |
718e3744 | 275 | bgp_update_source (struct peer *peer) |
276 | { | |
277 | struct interface *ifp; | |
1727d2e2 | 278 | union sockunion addr; |
718e3744 | 279 | |
280 | /* Source is specified with interface name. */ | |
281 | if (peer->update_if) | |
282 | { | |
283 | ifp = if_lookup_by_name (peer->update_if); | |
284 | if (! ifp) | |
285 | return; | |
286 | ||
1727d2e2 | 287 | if (bgp_update_address (ifp, &peer->su, &addr)) |
718e3744 | 288 | return; |
289 | ||
1727d2e2 | 290 | sockunion_bind (peer->fd, &addr, 0, &addr); |
718e3744 | 291 | } |
292 | ||
293 | /* Source is specified with IP address. */ | |
294 | if (peer->update_source) | |
eb821189 | 295 | sockunion_bind (peer->fd, peer->update_source, 0, peer->update_source); |
718e3744 | 296 | } |
297 | ||
298 | /* BGP try to connect to the peer. */ | |
299 | int | |
300 | bgp_connect (struct peer *peer) | |
301 | { | |
302 | unsigned int ifindex = 0; | |
303 | ||
304 | /* Make socket for the peer. */ | |
eb821189 | 305 | peer->fd = sockunion_socket (&peer->su); |
306 | if (peer->fd < 0) | |
718e3744 | 307 | return -1; |
308 | ||
309 | /* If we can get socket for the peer, adjest TTL and make connection. */ | |
6d85b15b | 310 | if (peer->sort == BGP_PEER_EBGP) { |
eb821189 | 311 | sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl); |
fa411a21 NH |
312 | if (peer->gtsm_hops) |
313 | sockopt_minttl (peer->su.sa.sa_family, peer->fd, MAXTTL + 1 - peer->gtsm_hops); | |
314 | } | |
718e3744 | 315 | |
eb821189 | 316 | sockopt_reuseaddr (peer->fd); |
317 | sockopt_reuseport (peer->fd); | |
0df7c91f | 318 | |
1423c809 | 319 | #ifdef IPTOS_PREC_INTERNETCONTROL |
5c88f19d CL |
320 | if (bgpd_privs.change (ZPRIVS_RAISE)) |
321 | zlog_err ("%s: could not raise privs", __func__); | |
1423c809 SH |
322 | if (sockunion_family (&peer->su) == AF_INET) |
323 | setsockopt_ipv4_tos (peer->fd, IPTOS_PREC_INTERNETCONTROL); | |
6d0732c8 SH |
324 | # ifdef HAVE_IPV6 |
325 | else if (sockunion_family (&peer->su) == AF_INET6) | |
326 | setsockopt_ipv6_tclass (peer->fd, IPTOS_PREC_INTERNETCONTROL); | |
327 | # endif | |
5c88f19d CL |
328 | if (bgpd_privs.change (ZPRIVS_LOWER)) |
329 | zlog_err ("%s: could not lower privs", __func__); | |
1423c809 SH |
330 | #endif |
331 | ||
0df7c91f PJ |
332 | if (peer->password) |
333 | bgp_md5_set_connect (peer->fd, &peer->su, peer->password); | |
718e3744 | 334 | |
335 | /* Bind socket. */ | |
336 | bgp_bind (peer); | |
337 | ||
338 | /* Update source bind. */ | |
339 | bgp_update_source (peer); | |
340 | ||
341 | #ifdef HAVE_IPV6 | |
342 | if (peer->ifname) | |
343 | ifindex = if_nametoindex (peer->ifname); | |
344 | #endif /* HAVE_IPV6 */ | |
345 | ||
346 | if (BGP_DEBUG (events, EVENTS)) | |
478ba054 | 347 | plog_debug (peer->log, "%s [Event] Connect start to %s fd %d", |
eb821189 | 348 | peer->host, peer->host, peer->fd); |
718e3744 | 349 | |
350 | /* Connect to the remote peer. */ | |
eb821189 | 351 | return sockunion_connect (peer->fd, &peer->su, htons (peer->port), ifindex); |
718e3744 | 352 | } |
353 | ||
354 | /* After TCP connection is established. Get local address and port. */ | |
355 | void | |
356 | bgp_getsockname (struct peer *peer) | |
357 | { | |
358 | if (peer->su_local) | |
359 | { | |
22db9dec | 360 | sockunion_free (peer->su_local); |
718e3744 | 361 | peer->su_local = NULL; |
362 | } | |
363 | ||
364 | if (peer->su_remote) | |
365 | { | |
22db9dec | 366 | sockunion_free (peer->su_remote); |
718e3744 | 367 | peer->su_remote = NULL; |
368 | } | |
369 | ||
eb821189 | 370 | peer->su_local = sockunion_getsockname (peer->fd); |
371 | peer->su_remote = sockunion_getpeername (peer->fd); | |
718e3744 | 372 | |
373 | bgp_nexthop_set (peer->su_local, peer->su_remote, &peer->nexthop, peer); | |
374 | } | |
375 | ||
d023aec4 SH |
376 | |
377 | static int | |
378 | bgp_listener (int sock, struct sockaddr *sa, socklen_t salen) | |
379 | { | |
380 | struct bgp_listener *listener; | |
381 | int ret, en; | |
382 | ||
383 | sockopt_reuseaddr (sock); | |
384 | sockopt_reuseport (sock); | |
385 | ||
5c88f19d CL |
386 | if (bgpd_privs.change (ZPRIVS_RAISE)) |
387 | zlog_err ("%s: could not raise privs", __func__); | |
388 | ||
d023aec4 SH |
389 | #ifdef IPTOS_PREC_INTERNETCONTROL |
390 | if (sa->sa_family == AF_INET) | |
391 | setsockopt_ipv4_tos (sock, IPTOS_PREC_INTERNETCONTROL); | |
6d0732c8 SH |
392 | # ifdef HAVE_IPV6 |
393 | else if (sa->sa_family == AF_INET6) | |
394 | setsockopt_ipv6_tclass (sock, IPTOS_PREC_INTERNETCONTROL); | |
395 | # endif | |
d023aec4 SH |
396 | #endif |
397 | ||
ca051269 | 398 | sockopt_v6only (sa->sa_family, sock); |
d023aec4 | 399 | |
d023aec4 SH |
400 | ret = bind (sock, sa, salen); |
401 | en = errno; | |
5c88f19d CL |
402 | if (bgpd_privs.change (ZPRIVS_LOWER)) |
403 | zlog_err ("%s: could not lower privs", __func__); | |
d023aec4 SH |
404 | |
405 | if (ret < 0) | |
406 | { | |
407 | zlog_err ("bind: %s", safe_strerror (en)); | |
408 | return ret; | |
409 | } | |
410 | ||
411 | ret = listen (sock, 3); | |
412 | if (ret < 0) | |
413 | { | |
414 | zlog_err ("listen: %s", safe_strerror (errno)); | |
415 | return ret; | |
416 | } | |
417 | ||
418 | listener = XMALLOC (MTYPE_BGP_LISTENER, sizeof(*listener)); | |
419 | listener->fd = sock; | |
420 | memcpy(&listener->su, sa, salen); | |
421 | listener->thread = thread_add_read (master, bgp_accept, listener, sock); | |
422 | listnode_add (bm->listen_sockets, listener); | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
718e3744 | 427 | /* IPv6 supported version of BGP server socket setup. */ |
428 | #if defined (HAVE_IPV6) && ! defined (NRL) | |
429 | int | |
d023aec4 | 430 | bgp_socket (unsigned short port, const char *address) |
718e3744 | 431 | { |
718e3744 | 432 | struct addrinfo *ainfo; |
433 | struct addrinfo *ainfo_save; | |
d023aec4 SH |
434 | static const struct addrinfo req = { |
435 | .ai_family = AF_UNSPEC, | |
436 | .ai_flags = AI_PASSIVE, | |
437 | .ai_socktype = SOCK_STREAM, | |
438 | }; | |
439 | int ret, count; | |
718e3744 | 440 | char port_str[BUFSIZ]; |
441 | ||
90b68769 | 442 | snprintf (port_str, sizeof(port_str), "%d", port); |
718e3744 | 443 | port_str[sizeof (port_str) - 1] = '\0'; |
444 | ||
d023aec4 | 445 | ret = getaddrinfo (address, port_str, &req, &ainfo_save); |
718e3744 | 446 | if (ret != 0) |
447 | { | |
448 | zlog_err ("getaddrinfo: %s", gai_strerror (ret)); | |
449 | return -1; | |
450 | } | |
451 | ||
d023aec4 SH |
452 | count = 0; |
453 | for (ainfo = ainfo_save; ainfo; ainfo = ainfo->ai_next) | |
718e3744 | 454 | { |
d023aec4 SH |
455 | int sock; |
456 | ||
718e3744 | 457 | if (ainfo->ai_family != AF_INET && ainfo->ai_family != AF_INET6) |
458 | continue; | |
459 | ||
460 | sock = socket (ainfo->ai_family, ainfo->ai_socktype, ainfo->ai_protocol); | |
461 | if (sock < 0) | |
462 | { | |
6099b3b5 | 463 | zlog_err ("socket: %s", safe_strerror (errno)); |
718e3744 | 464 | continue; |
465 | } | |
fa411a21 NH |
466 | |
467 | /* if we intend to implement ttl-security, this socket needs ttl=255 */ | |
468 | sockopt_ttl (ainfo->ai_family, sock, MAXTTL); | |
469 | ||
d023aec4 SH |
470 | ret = bgp_listener (sock, ainfo->ai_addr, ainfo->ai_addrlen); |
471 | if (ret == 0) | |
472 | ++count; | |
473 | else | |
474 | close(sock); | |
718e3744 | 475 | } |
718e3744 | 476 | freeaddrinfo (ainfo_save); |
d023aec4 SH |
477 | if (count == 0) |
478 | { | |
479 | zlog_err ("%s: no usable addresses", __func__); | |
480 | return -1; | |
481 | } | |
718e3744 | 482 | |
d023aec4 | 483 | return 0; |
718e3744 | 484 | } |
485 | #else | |
486 | /* Traditional IPv4 only version. */ | |
487 | int | |
d023aec4 | 488 | bgp_socket (unsigned short port, const char *address) |
718e3744 | 489 | { |
490 | int sock; | |
491 | int socklen; | |
492 | struct sockaddr_in sin; | |
4a1a2716 | 493 | int ret, en; |
718e3744 | 494 | |
495 | sock = socket (AF_INET, SOCK_STREAM, 0); | |
496 | if (sock < 0) | |
497 | { | |
6099b3b5 | 498 | zlog_err ("socket: %s", safe_strerror (errno)); |
718e3744 | 499 | return sock; |
500 | } | |
501 | ||
fa411a21 NH |
502 | /* if we intend to implement ttl-security, this socket needs ttl=255 */ |
503 | sockopt_ttl (AF_INET, sock, MAXTTL); | |
504 | ||
718e3744 | 505 | memset (&sin, 0, sizeof (struct sockaddr_in)); |
718e3744 | 506 | sin.sin_family = AF_INET; |
507 | sin.sin_port = htons (port); | |
508 | socklen = sizeof (struct sockaddr_in); | |
3a02d1f7 | 509 | |
90b68769 | 510 | if (address && ((ret = inet_aton(address, &sin.sin_addr)) < 1)) |
3a02d1f7 | 511 | { |
90b68769 PJ |
512 | zlog_err("bgp_socket: could not parse ip address %s: %s", |
513 | address, safe_strerror (errno)); | |
3a02d1f7 PJ |
514 | return ret; |
515 | } | |
6f0e3f6e | 516 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 517 | sin.sin_len = socklen; |
6f0e3f6e | 518 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 519 | |
d023aec4 | 520 | ret = bgp_listener (sock, (struct sockaddr *) &sin, socklen); |
718e3744 | 521 | if (ret < 0) |
522 | { | |
718e3744 | 523 | close (sock); |
524 | return ret; | |
525 | } | |
718e3744 | 526 | return sock; |
527 | } | |
528 | #endif /* HAVE_IPV6 && !NRL */ | |
d023aec4 SH |
529 | |
530 | void | |
531 | bgp_close (void) | |
532 | { | |
533 | struct listnode *node, *next; | |
534 | struct bgp_listener *listener; | |
535 | ||
536 | for (ALL_LIST_ELEMENTS (bm->listen_sockets, node, next, listener)) | |
537 | { | |
538 | thread_cancel (listener->thread); | |
539 | close (listener->fd); | |
540 | listnode_delete (bm->listen_sockets, listener); | |
541 | XFREE (MTYPE_BGP_LISTENER, listener); | |
542 | } | |
543 | } |