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718e3744 | 1 | /* BGP-4, BGP-4+ daemon program |
896014f4 DL |
2 | * Copyright (C) 1996, 97, 98, 99, 2000 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 along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
718e3744 | 20 | |
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "thread.h" | |
25 | #include "buffer.h" | |
26 | #include "stream.h" | |
74ffbfe6 | 27 | #include "ringbuf.h" |
718e3744 | 28 | #include "command.h" |
29 | #include "sockunion.h" | |
e9a0c656 | 30 | #include "sockopt.h" |
718e3744 | 31 | #include "network.h" |
32 | #include "memory.h" | |
33 | #include "filter.h" | |
34 | #include "routemap.h" | |
718e3744 | 35 | #include "log.h" |
36 | #include "plist.h" | |
37 | #include "linklist.h" | |
200df115 | 38 | #include "workqueue.h" |
3f9c7369 | 39 | #include "queue.h" |
88177fe3 | 40 | #include "zclient.h" |
7f342629 | 41 | #include "bfd.h" |
dd793e4a DW |
42 | #include "hash.h" |
43 | #include "jhash.h" | |
587ff0fd | 44 | #include "table.h" |
4dcadbef | 45 | #include "lib/json.h" |
4ab46701 | 46 | #include "lib/sockopt.h" |
0ca8b79f | 47 | #include "frr_pthread.h" |
92708db6 | 48 | #include "bitfield.h" |
718e3744 | 49 | |
50 | #include "bgpd/bgpd.h" | |
51 | #include "bgpd/bgp_table.h" | |
52 | #include "bgpd/bgp_aspath.h" | |
53 | #include "bgpd/bgp_route.h" | |
54 | #include "bgpd/bgp_dump.h" | |
55 | #include "bgpd/bgp_debug.h" | |
14454c9f | 56 | #include "bgpd/bgp_errors.h" |
718e3744 | 57 | #include "bgpd/bgp_community.h" |
ed0e57e3 | 58 | #include "bgpd/bgp_community_alias.h" |
7f7940e6 | 59 | #include "bgpd/bgp_conditional_adv.h" |
718e3744 | 60 | #include "bgpd/bgp_attr.h" |
61 | #include "bgpd/bgp_regex.h" | |
62 | #include "bgpd/bgp_clist.h" | |
63 | #include "bgpd/bgp_fsm.h" | |
64 | #include "bgpd/bgp_packet.h" | |
65 | #include "bgpd/bgp_zebra.h" | |
66 | #include "bgpd/bgp_open.h" | |
67 | #include "bgpd/bgp_filter.h" | |
68 | #include "bgpd/bgp_nexthop.h" | |
69 | #include "bgpd/bgp_damp.h" | |
70 | #include "bgpd/bgp_mplsvpn.h" | |
49e5a4a0 | 71 | #ifdef ENABLE_BGP_VNC |
f8b6f499 LB |
72 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" |
73 | #include "bgpd/rfapi/rfapi_backend.h" | |
65efcfce | 74 | #endif |
7ef5a232 | 75 | #include "bgpd/bgp_evpn.h" |
718e3744 | 76 | #include "bgpd/bgp_advertise.h" |
77 | #include "bgpd/bgp_network.h" | |
78 | #include "bgpd/bgp_vty.h" | |
165b5fff | 79 | #include "bgpd/bgp_mpath.h" |
fc9a856f | 80 | #include "bgpd/bgp_nht.h" |
3f9c7369 | 81 | #include "bgpd/bgp_updgrp.h" |
c43ed2e4 | 82 | #include "bgpd/bgp_bfd.h" |
4a1ab8e4 | 83 | #include "bgpd/bgp_memory.h" |
784d3a42 | 84 | #include "bgpd/bgp_evpn_vty.h" |
2d4ee774 | 85 | #include "bgpd/bgp_keepalives.h" |
56257a44 | 86 | #include "bgpd/bgp_io.h" |
41d6d607 | 87 | #include "bgpd/bgp_ecommunity.h" |
7c40bf39 | 88 | #include "bgpd/bgp_flowspec.h" |
955bfd98 | 89 | #include "bgpd/bgp_labelpool.h" |
f3d32faa | 90 | #include "bgpd/bgp_pbr.h" |
dcc68b5e | 91 | #include "bgpd/bgp_addpath.h" |
85c8d83b | 92 | #include "bgpd/bgp_evpn_private.h" |
c44ab6f1 | 93 | #include "bgpd/bgp_evpn_mh.h" |
48ecf8f5 | 94 | #include "bgpd/bgp_mac.h" |
73d70fa6 DL |
95 | |
96 | DEFINE_MTYPE_STATIC(BGPD, PEER_TX_SHUTDOWN_MSG, "Peer shutdown message (TX)"); | |
85c8d83b | 97 | DEFINE_MTYPE_STATIC(BGPD, BGP_EVPN_INFO, "BGP EVPN instance information"); |
96244aca DL |
98 | DEFINE_QOBJ_TYPE(bgp_master); |
99 | DEFINE_QOBJ_TYPE(bgp); | |
100 | DEFINE_QOBJ_TYPE(peer); | |
8451921b | 101 | DEFINE_HOOK(bgp_inst_delete, (struct bgp *bgp), (bgp)); |
19df7279 | 102 | |
718e3744 | 103 | /* BGP process wide configuration. */ |
104 | static struct bgp_master bgp_master; | |
105 | ||
106 | /* BGP process wide configuration pointer to export. */ | |
107 | struct bgp_master *bm; | |
108 | ||
109 | /* BGP community-list. */ | |
110 | struct community_list_handler *bgp_clist; | |
6b0655a2 | 111 | |
37fe7731 DS |
112 | unsigned int multipath_num = MULTIPATH_NUM; |
113 | ||
c208c586 S |
114 | /* Number of bgp instances configured for suppress fib config */ |
115 | unsigned int bgp_suppress_fib_count; | |
116 | ||
d62a17ae | 117 | static void bgp_if_finish(struct bgp *bgp); |
cc32742c | 118 | static void peer_drop_dynamic_neighbor(struct peer *peer); |
b33adb7c | 119 | |
ad4cbda1 | 120 | extern struct zclient *zclient; |
1ff9a340 | 121 | |
e5619c28 PG |
122 | /* handle main socket creation or deletion */ |
123 | static int bgp_check_main_socket(bool create, struct bgp *bgp) | |
124 | { | |
125 | static int bgp_server_main_created; | |
85e9cd9a AMR |
126 | struct listnode *node; |
127 | char *address; | |
e5619c28 | 128 | |
d8729f8c | 129 | if (create) { |
e5619c28 PG |
130 | if (bgp_server_main_created) |
131 | return 0; | |
85e9cd9a AMR |
132 | if (list_isempty(bm->addresses)) { |
133 | if (bgp_socket(bgp, bm->port, NULL) < 0) | |
134 | return BGP_ERR_INVALID_VALUE; | |
135 | } else { | |
136 | for (ALL_LIST_ELEMENTS_RO(bm->addresses, node, address)) | |
137 | if (bgp_socket(bgp, bm->port, address) < 0) | |
138 | return BGP_ERR_INVALID_VALUE; | |
139 | } | |
e5619c28 PG |
140 | bgp_server_main_created = 1; |
141 | return 0; | |
142 | } | |
143 | if (!bgp_server_main_created) | |
144 | return 0; | |
e5619c28 PG |
145 | bgp_close(); |
146 | bgp_server_main_created = 0; | |
147 | return 0; | |
148 | } | |
149 | ||
d62a17ae | 150 | void bgp_session_reset(struct peer *peer) |
1ff9a340 | 151 | { |
d62a17ae | 152 | if (peer->doppelganger && (peer->doppelganger->status != Deleted) |
153 | && !(CHECK_FLAG(peer->doppelganger->flags, PEER_FLAG_CONFIG_NODE))) | |
154 | peer_delete(peer->doppelganger); | |
1ff9a340 | 155 | |
d62a17ae | 156 | BGP_EVENT_ADD(peer, BGP_Stop); |
1ff9a340 DS |
157 | } |
158 | ||
159 | /* | |
160 | * During session reset, we may delete the doppelganger peer, which would | |
161 | * be the next node to the current node. If the session reset was invoked | |
162 | * during walk of peer list, we would end up accessing the freed next | |
163 | * node. This function moves the next node along. | |
164 | */ | |
d62a17ae | 165 | static void bgp_session_reset_safe(struct peer *peer, struct listnode **nnode) |
1ff9a340 | 166 | { |
d62a17ae | 167 | struct listnode *n; |
168 | struct peer *npeer; | |
1ff9a340 | 169 | |
d62a17ae | 170 | n = (nnode) ? *nnode : NULL; |
171 | npeer = (n) ? listgetdata(n) : NULL; | |
1ff9a340 | 172 | |
d62a17ae | 173 | if (peer->doppelganger && (peer->doppelganger->status != Deleted) |
174 | && !(CHECK_FLAG(peer->doppelganger->flags, | |
175 | PEER_FLAG_CONFIG_NODE))) { | |
176 | if (peer->doppelganger == npeer) | |
177 | /* nnode and *nnode are confirmed to be non-NULL here */ | |
178 | *nnode = (*nnode)->next; | |
179 | peer_delete(peer->doppelganger); | |
180 | } | |
1ff9a340 | 181 | |
d62a17ae | 182 | BGP_EVENT_ADD(peer, BGP_Stop); |
1ff9a340 DS |
183 | } |
184 | ||
718e3744 | 185 | /* BGP global flag manipulation. */ |
d62a17ae | 186 | int bgp_option_set(int flag) |
187 | { | |
188 | switch (flag) { | |
189 | case BGP_OPT_NO_FIB: | |
d62a17ae | 190 | case BGP_OPT_NO_LISTEN: |
0b014ea6 | 191 | case BGP_OPT_NO_ZEBRA: |
d62a17ae | 192 | SET_FLAG(bm->options, flag); |
193 | break; | |
194 | default: | |
195 | return BGP_ERR_INVALID_FLAG; | |
196 | } | |
197 | return 0; | |
198 | } | |
199 | ||
200 | int bgp_option_unset(int flag) | |
201 | { | |
202 | switch (flag) { | |
d62a17ae | 203 | /* Fall through. */ |
0b014ea6 | 204 | case BGP_OPT_NO_ZEBRA: |
d62a17ae | 205 | case BGP_OPT_NO_FIB: |
d62a17ae | 206 | UNSET_FLAG(bm->options, flag); |
207 | break; | |
208 | default: | |
209 | return BGP_ERR_INVALID_FLAG; | |
210 | } | |
211 | return 0; | |
212 | } | |
213 | ||
214 | int bgp_option_check(int flag) | |
215 | { | |
216 | return CHECK_FLAG(bm->options, flag); | |
718e3744 | 217 | } |
6b0655a2 | 218 | |
c163f297 DS |
219 | /* set the bgp no-rib option during runtime and remove installed routes */ |
220 | void bgp_option_norib_set_runtime(void) | |
221 | { | |
222 | struct bgp *bgp; | |
223 | struct listnode *node; | |
224 | afi_t afi; | |
225 | safi_t safi; | |
226 | ||
227 | if (bgp_option_check(BGP_OPT_NO_FIB)) | |
228 | return; | |
229 | ||
230 | bgp_option_set(BGP_OPT_NO_FIB); | |
231 | ||
232 | zlog_info("Disabled BGP route installation to RIB (Zebra)"); | |
233 | ||
234 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp)) { | |
235 | FOREACH_AFI_SAFI(afi, safi) | |
236 | bgp_zebra_withdraw_table_all_subtypes(bgp, afi, safi); | |
237 | } | |
238 | ||
239 | zlog_info("All routes have been withdrawn from RIB (Zebra)"); | |
240 | } | |
241 | ||
242 | /* unset the bgp no-rib option during runtime and announce routes to Zebra */ | |
243 | void bgp_option_norib_unset_runtime(void) | |
244 | { | |
245 | struct bgp *bgp; | |
246 | struct listnode *node; | |
247 | afi_t afi; | |
248 | safi_t safi; | |
249 | ||
250 | if (!bgp_option_check(BGP_OPT_NO_FIB)) | |
251 | return; | |
252 | ||
253 | bgp_option_unset(BGP_OPT_NO_FIB); | |
254 | ||
255 | zlog_info("Enabled BGP route installation to RIB (Zebra)"); | |
256 | ||
257 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp)) { | |
258 | FOREACH_AFI_SAFI(afi, safi) | |
259 | bgp_zebra_announce_table_all_subtypes(bgp, afi, safi); | |
260 | } | |
261 | ||
262 | zlog_info("All routes have been installed in RIB (Zebra)"); | |
263 | } | |
264 | ||
718e3744 | 265 | /* Internal function to set BGP structure configureation flag. */ |
d62a17ae | 266 | static void bgp_config_set(struct bgp *bgp, int config) |
718e3744 | 267 | { |
d62a17ae | 268 | SET_FLAG(bgp->config, config); |
718e3744 | 269 | } |
270 | ||
d62a17ae | 271 | static void bgp_config_unset(struct bgp *bgp, int config) |
718e3744 | 272 | { |
d62a17ae | 273 | UNSET_FLAG(bgp->config, config); |
718e3744 | 274 | } |
275 | ||
d62a17ae | 276 | static int bgp_config_check(struct bgp *bgp, int config) |
718e3744 | 277 | { |
d62a17ae | 278 | return CHECK_FLAG(bgp->config, config); |
718e3744 | 279 | } |
6b0655a2 | 280 | |
e65fe398 MS |
281 | /* Set BGP router identifier; distinguish between explicit config and other |
282 | * cases. | |
283 | */ | |
284 | static int bgp_router_id_set(struct bgp *bgp, const struct in_addr *id, | |
285 | bool is_config) | |
718e3744 | 286 | { |
d62a17ae | 287 | struct peer *peer; |
288 | struct listnode *node, *nnode; | |
718e3744 | 289 | |
d62a17ae | 290 | if (IPV4_ADDR_SAME(&bgp->router_id, id)) |
291 | return 0; | |
718e3744 | 292 | |
d62a17ae | 293 | /* EVPN uses router id in RD, withdraw them */ |
94c2f693 | 294 | if (is_evpn_enabled()) |
2951a7a4 | 295 | bgp_evpn_handle_router_id_update(bgp, true); |
2d48ee25 | 296 | |
2951a7a4 | 297 | vpn_handle_router_id_update(bgp, true, is_config); |
636f7608 | 298 | |
d62a17ae | 299 | IPV4_ADDR_COPY(&bgp->router_id, id); |
718e3744 | 300 | |
d62a17ae | 301 | /* Set all peer's local identifier with this value. */ |
302 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
303 | IPV4_ADDR_COPY(&peer->local_id, id); | |
718e3744 | 304 | |
d62a17ae | 305 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
306 | peer->last_reset = PEER_DOWN_RID_CHANGE; | |
307 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
308 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
309 | } | |
310 | } | |
14c1a7bf | 311 | |
d62a17ae | 312 | /* EVPN uses router id in RD, update them */ |
94c2f693 | 313 | if (is_evpn_enabled()) |
2951a7a4 | 314 | bgp_evpn_handle_router_id_update(bgp, false); |
2d48ee25 | 315 | |
2951a7a4 | 316 | vpn_handle_router_id_update(bgp, false, is_config); |
636f7608 | 317 | |
d62a17ae | 318 | return 0; |
718e3744 | 319 | } |
320 | ||
d62a17ae | 321 | void bgp_router_id_zebra_bump(vrf_id_t vrf_id, const struct prefix *router_id) |
0e6cb743 | 322 | { |
d62a17ae | 323 | struct listnode *node, *nnode; |
324 | struct bgp *bgp; | |
36dc7588 | 325 | struct in_addr *addr = NULL; |
326 | ||
327 | if (router_id != NULL) | |
328 | addr = (struct in_addr *)&(router_id->u.prefix4); | |
0e6cb743 | 329 | |
d62a17ae | 330 | if (vrf_id == VRF_DEFAULT) { |
331 | /* Router-id change for default VRF has to also update all | |
332 | * views. */ | |
333 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) { | |
334 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
335 | continue; | |
0e6cb743 | 336 | |
36dc7588 | 337 | if (addr) |
338 | bgp->router_id_zebra = *addr; | |
339 | else | |
340 | addr = &bgp->router_id_zebra; | |
341 | ||
342 | if (!bgp->router_id_static.s_addr) { | |
343 | /* Router ID is updated if there are no active | |
344 | * peer sessions | |
345 | */ | |
346 | if (bgp->established_peers == 0) { | |
347 | if (BGP_DEBUG(zebra, ZEBRA)) | |
137147c6 | 348 | zlog_debug( |
23d0a753 | 349 | "RID change : vrf %s(%u), RTR ID %pI4", |
137147c6 | 350 | bgp->name_pretty, |
23d0a753 | 351 | bgp->vrf_id, addr); |
3c2a1ad1 DS |
352 | /* |
353 | * if old router-id was 0x0, set flag | |
354 | * to use this new value | |
355 | */ | |
356 | bgp_router_id_set(bgp, addr, | |
357 | (bgp->router_id.s_addr | |
358 | == INADDR_ANY) | |
359 | ? true | |
360 | : false); | |
36dc7588 | 361 | } |
362 | } | |
d62a17ae | 363 | } |
364 | } else { | |
365 | bgp = bgp_lookup_by_vrf_id(vrf_id); | |
366 | if (bgp) { | |
36dc7588 | 367 | if (addr) |
368 | bgp->router_id_zebra = *addr; | |
369 | else | |
370 | addr = &bgp->router_id_zebra; | |
371 | ||
372 | if (!bgp->router_id_static.s_addr) { | |
373 | /* Router ID is updated if there are no active | |
374 | * peer sessions | |
375 | */ | |
376 | if (bgp->established_peers == 0) { | |
377 | if (BGP_DEBUG(zebra, ZEBRA)) | |
137147c6 | 378 | zlog_debug( |
23d0a753 | 379 | "RID change : vrf %s(%u), RTR ID %pI4", |
137147c6 | 380 | bgp->name_pretty, |
23d0a753 | 381 | bgp->vrf_id, addr); |
3c2a1ad1 DS |
382 | /* |
383 | * if old router-id was 0x0, set flag | |
384 | * to use this new value | |
385 | */ | |
386 | bgp_router_id_set(bgp, addr, | |
387 | (bgp->router_id.s_addr | |
388 | == INADDR_ANY) | |
389 | ? true | |
390 | : false); | |
36dc7588 | 391 | } |
392 | } | |
0e6cb743 | 393 | |
d62a17ae | 394 | } |
395 | } | |
0e6cb743 DL |
396 | } |
397 | ||
3dc339cd | 398 | void bgp_router_id_static_set(struct bgp *bgp, struct in_addr id) |
0e6cb743 | 399 | { |
d62a17ae | 400 | bgp->router_id_static = id; |
975a328e DA |
401 | bgp_router_id_set(bgp, |
402 | id.s_addr != INADDR_ANY ? &id : &bgp->router_id_zebra, | |
2951a7a4 | 403 | true /* is config */); |
0e6cb743 DL |
404 | } |
405 | ||
9acb67cb DS |
406 | void bm_wait_for_fib_set(bool set) |
407 | { | |
408 | bool send_msg = false; | |
409 | ||
410 | if (bm->wait_for_fib == set) | |
411 | return; | |
412 | ||
413 | bm->wait_for_fib = set; | |
414 | if (set) { | |
415 | if (bgp_suppress_fib_count == 0) | |
416 | send_msg = true; | |
417 | bgp_suppress_fib_count++; | |
418 | } else { | |
419 | bgp_suppress_fib_count--; | |
420 | if (bgp_suppress_fib_count == 0) | |
421 | send_msg = true; | |
422 | } | |
423 | ||
424 | if (send_msg && zclient) | |
425 | zebra_route_notify_send(ZEBRA_ROUTE_NOTIFY_REQUEST, | |
426 | zclient, set); | |
427 | } | |
428 | ||
c208c586 S |
429 | /* Set the suppress fib pending for the bgp configuration */ |
430 | void bgp_suppress_fib_pending_set(struct bgp *bgp, bool set) | |
431 | { | |
432 | bool send_msg = false; | |
433 | ||
434 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VIEW) | |
435 | return; | |
436 | ||
437 | if (set) { | |
438 | SET_FLAG(bgp->flags, BGP_FLAG_SUPPRESS_FIB_PENDING); | |
439 | /* Send msg to zebra for the first instance of bgp enabled | |
440 | * with suppress fib | |
441 | */ | |
442 | if (bgp_suppress_fib_count == 0) | |
443 | send_msg = true; | |
444 | bgp_suppress_fib_count++; | |
445 | } else { | |
446 | UNSET_FLAG(bgp->flags, BGP_FLAG_SUPPRESS_FIB_PENDING); | |
447 | bgp_suppress_fib_count--; | |
448 | ||
449 | /* Send msg to zebra if there are no instances enabled | |
450 | * with suppress fib | |
451 | */ | |
452 | if (bgp_suppress_fib_count == 0) | |
453 | send_msg = true; | |
454 | } | |
455 | /* Send route notify request to RIB */ | |
456 | if (send_msg) { | |
457 | if (BGP_DEBUG(zebra, ZEBRA)) | |
458 | zlog_debug("Sending ZEBRA_ROUTE_NOTIFY_REQUEST"); | |
459 | ||
460 | if (zclient) | |
461 | zebra_route_notify_send(ZEBRA_ROUTE_NOTIFY_REQUEST, | |
462 | zclient, set); | |
463 | } | |
464 | } | |
465 | ||
718e3744 | 466 | /* BGP's cluster-id control. */ |
d62a17ae | 467 | int bgp_cluster_id_set(struct bgp *bgp, struct in_addr *cluster_id) |
718e3744 | 468 | { |
d62a17ae | 469 | struct peer *peer; |
470 | struct listnode *node, *nnode; | |
718e3744 | 471 | |
d62a17ae | 472 | IPV4_ADDR_COPY(&bgp->cluster_id, cluster_id); |
473 | bgp_config_set(bgp, BGP_CONFIG_CLUSTER_ID); | |
718e3744 | 474 | |
d62a17ae | 475 | /* Clear all IBGP peer. */ |
476 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
477 | if (peer->sort != BGP_PEER_IBGP) | |
478 | continue; | |
718e3744 | 479 | |
d62a17ae | 480 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
481 | peer->last_reset = PEER_DOWN_CLID_CHANGE; | |
482 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
483 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
484 | } | |
485 | } | |
486 | return 0; | |
718e3744 | 487 | } |
488 | ||
d62a17ae | 489 | int bgp_cluster_id_unset(struct bgp *bgp) |
718e3744 | 490 | { |
d62a17ae | 491 | struct peer *peer; |
492 | struct listnode *node, *nnode; | |
718e3744 | 493 | |
d62a17ae | 494 | if (!bgp_config_check(bgp, BGP_CONFIG_CLUSTER_ID)) |
495 | return 0; | |
718e3744 | 496 | |
d62a17ae | 497 | bgp->cluster_id.s_addr = 0; |
498 | bgp_config_unset(bgp, BGP_CONFIG_CLUSTER_ID); | |
718e3744 | 499 | |
d62a17ae | 500 | /* Clear all IBGP peer. */ |
501 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
502 | if (peer->sort != BGP_PEER_IBGP) | |
503 | continue; | |
718e3744 | 504 | |
d62a17ae | 505 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
506 | peer->last_reset = PEER_DOWN_CLID_CHANGE; | |
507 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
508 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
509 | } | |
510 | } | |
511 | return 0; | |
718e3744 | 512 | } |
6b0655a2 | 513 | |
65957886 SH |
514 | /* time_t value that is monotonicly increasing |
515 | * and uneffected by adjustments to system clock | |
516 | */ | |
d62a17ae | 517 | time_t bgp_clock(void) |
65957886 | 518 | { |
d62a17ae | 519 | struct timeval tv; |
65957886 | 520 | |
d62a17ae | 521 | monotime(&tv); |
522 | return tv.tv_sec; | |
65957886 SH |
523 | } |
524 | ||
718e3744 | 525 | /* BGP timer configuration. */ |
3dc339cd | 526 | void bgp_timers_set(struct bgp *bgp, uint32_t keepalive, uint32_t holdtime, |
6c537a18 | 527 | uint32_t connect_retry, uint32_t delayopen) |
718e3744 | 528 | { |
d62a17ae | 529 | bgp->default_keepalive = |
530 | (keepalive < holdtime / 3 ? keepalive : holdtime / 3); | |
531 | bgp->default_holdtime = holdtime; | |
5d5393b9 | 532 | bgp->default_connect_retry = connect_retry; |
6c537a18 | 533 | bgp->default_delayopen = delayopen; |
718e3744 | 534 | } |
535 | ||
5d5393b9 | 536 | /* mostly for completeness - CLI uses its own defaults */ |
3dc339cd | 537 | void bgp_timers_unset(struct bgp *bgp) |
718e3744 | 538 | { |
d62a17ae | 539 | bgp->default_keepalive = BGP_DEFAULT_KEEPALIVE; |
540 | bgp->default_holdtime = BGP_DEFAULT_HOLDTIME; | |
5d5393b9 | 541 | bgp->default_connect_retry = BGP_DEFAULT_CONNECT_RETRY; |
6c537a18 | 542 | bgp->default_delayopen = BGP_DEFAULT_DELAYOPEN; |
718e3744 | 543 | } |
6b0655a2 | 544 | |
718e3744 | 545 | /* BGP confederation configuration. */ |
ff8a8a7a | 546 | void bgp_confederation_id_set(struct bgp *bgp, as_t as) |
d62a17ae | 547 | { |
548 | struct peer *peer; | |
549 | struct listnode *node, *nnode; | |
550 | int already_confed; | |
551 | ||
552 | if (as == 0) | |
ff8a8a7a | 553 | return; |
d62a17ae | 554 | |
555 | /* Remember - were we doing confederation before? */ | |
556 | already_confed = bgp_config_check(bgp, BGP_CONFIG_CONFEDERATION); | |
557 | bgp->confed_id = as; | |
558 | bgp_config_set(bgp, BGP_CONFIG_CONFEDERATION); | |
559 | ||
560 | /* If we were doing confederation already, this is just an external | |
561 | AS change. Just Reset EBGP sessions, not CONFED sessions. If we | |
562 | were not doing confederation before, reset all EBGP sessions. */ | |
563 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
469cbb0f DS |
564 | bgp_peer_sort_t ptype = peer_sort(peer); |
565 | ||
d62a17ae | 566 | /* We're looking for peers who's AS is not local or part of our |
567 | confederation. */ | |
568 | if (already_confed) { | |
469cbb0f | 569 | if (ptype == BGP_PEER_EBGP) { |
d62a17ae | 570 | peer->local_as = as; |
571 | if (BGP_IS_VALID_STATE_FOR_NOTIF( | |
572 | peer->status)) { | |
573 | peer->last_reset = | |
574 | PEER_DOWN_CONFED_ID_CHANGE; | |
575 | bgp_notify_send( | |
576 | peer, BGP_NOTIFY_CEASE, | |
577 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
578 | } else | |
579 | bgp_session_reset_safe(peer, &nnode); | |
580 | } | |
581 | } else { | |
582 | /* Not doign confederation before, so reset every | |
583 | non-local | |
584 | session */ | |
469cbb0f | 585 | if (ptype != BGP_PEER_IBGP) { |
d62a17ae | 586 | /* Reset the local_as to be our EBGP one */ |
469cbb0f | 587 | if (ptype == BGP_PEER_EBGP) |
d62a17ae | 588 | peer->local_as = as; |
589 | if (BGP_IS_VALID_STATE_FOR_NOTIF( | |
590 | peer->status)) { | |
591 | peer->last_reset = | |
592 | PEER_DOWN_CONFED_ID_CHANGE; | |
593 | bgp_notify_send( | |
594 | peer, BGP_NOTIFY_CEASE, | |
595 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
596 | } else | |
597 | bgp_session_reset_safe(peer, &nnode); | |
598 | } | |
599 | } | |
718e3744 | 600 | } |
ff8a8a7a | 601 | return; |
718e3744 | 602 | } |
603 | ||
d62a17ae | 604 | int bgp_confederation_id_unset(struct bgp *bgp) |
718e3744 | 605 | { |
d62a17ae | 606 | struct peer *peer; |
607 | struct listnode *node, *nnode; | |
608 | ||
609 | bgp->confed_id = 0; | |
610 | bgp_config_unset(bgp, BGP_CONFIG_CONFEDERATION); | |
718e3744 | 611 | |
d62a17ae | 612 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { |
613 | /* We're looking for peers who's AS is not local */ | |
614 | if (peer_sort(peer) != BGP_PEER_IBGP) { | |
615 | peer->local_as = bgp->as; | |
616 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { | |
617 | peer->last_reset = PEER_DOWN_CONFED_ID_CHANGE; | |
618 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
619 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
620 | } | |
718e3744 | 621 | |
d62a17ae | 622 | else |
623 | bgp_session_reset_safe(peer, &nnode); | |
624 | } | |
625 | } | |
626 | return 0; | |
718e3744 | 627 | } |
628 | ||
d62a17ae | 629 | /* Is an AS part of the confed or not? */ |
3dc339cd | 630 | bool bgp_confederation_peers_check(struct bgp *bgp, as_t as) |
718e3744 | 631 | { |
d62a17ae | 632 | int i; |
718e3744 | 633 | |
d62a17ae | 634 | if (!bgp) |
3dc339cd | 635 | return false; |
718e3744 | 636 | |
d62a17ae | 637 | for (i = 0; i < bgp->confed_peers_cnt; i++) |
638 | if (bgp->confed_peers[i] == as) | |
3dc339cd | 639 | return true; |
718e3744 | 640 | |
3dc339cd | 641 | return false; |
d62a17ae | 642 | } |
718e3744 | 643 | |
d62a17ae | 644 | /* Add an AS to the confederation set. */ |
645 | int bgp_confederation_peers_add(struct bgp *bgp, as_t as) | |
646 | { | |
647 | struct peer *peer; | |
648 | struct listnode *node, *nnode; | |
649 | ||
650 | if (!bgp) | |
651 | return BGP_ERR_INVALID_BGP; | |
652 | ||
653 | if (bgp->as == as) | |
654 | return BGP_ERR_INVALID_AS; | |
655 | ||
656 | if (bgp_confederation_peers_check(bgp, as)) | |
657 | return -1; | |
658 | ||
659 | if (bgp->confed_peers) | |
660 | bgp->confed_peers = | |
661 | XREALLOC(MTYPE_BGP_CONFED_LIST, bgp->confed_peers, | |
662 | (bgp->confed_peers_cnt + 1) * sizeof(as_t)); | |
663 | else | |
664 | bgp->confed_peers = | |
665 | XMALLOC(MTYPE_BGP_CONFED_LIST, | |
666 | (bgp->confed_peers_cnt + 1) * sizeof(as_t)); | |
667 | ||
668 | bgp->confed_peers[bgp->confed_peers_cnt] = as; | |
669 | bgp->confed_peers_cnt++; | |
670 | ||
671 | if (bgp_config_check(bgp, BGP_CONFIG_CONFEDERATION)) { | |
672 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
673 | if (peer->as == as) { | |
b50a0610 | 674 | (void)peer_sort(peer); |
d62a17ae | 675 | peer->local_as = bgp->as; |
676 | if (BGP_IS_VALID_STATE_FOR_NOTIF( | |
677 | peer->status)) { | |
678 | peer->last_reset = | |
679 | PEER_DOWN_CONFED_PEER_CHANGE; | |
680 | bgp_notify_send( | |
681 | peer, BGP_NOTIFY_CEASE, | |
682 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
683 | } else | |
684 | bgp_session_reset_safe(peer, &nnode); | |
685 | } | |
686 | } | |
687 | } | |
688 | return 0; | |
718e3744 | 689 | } |
690 | ||
691 | /* Delete an AS from the confederation set. */ | |
d62a17ae | 692 | int bgp_confederation_peers_remove(struct bgp *bgp, as_t as) |
693 | { | |
694 | int i; | |
695 | int j; | |
696 | struct peer *peer; | |
697 | struct listnode *node, *nnode; | |
698 | ||
699 | if (!bgp) | |
700 | return -1; | |
701 | ||
702 | if (!bgp_confederation_peers_check(bgp, as)) | |
703 | return -1; | |
704 | ||
705 | for (i = 0; i < bgp->confed_peers_cnt; i++) | |
706 | if (bgp->confed_peers[i] == as) | |
707 | for (j = i + 1; j < bgp->confed_peers_cnt; j++) | |
708 | bgp->confed_peers[j - 1] = bgp->confed_peers[j]; | |
709 | ||
710 | bgp->confed_peers_cnt--; | |
711 | ||
712 | if (bgp->confed_peers_cnt == 0) { | |
713 | if (bgp->confed_peers) | |
714 | XFREE(MTYPE_BGP_CONFED_LIST, bgp->confed_peers); | |
715 | bgp->confed_peers = NULL; | |
716 | } else | |
717 | bgp->confed_peers = | |
718 | XREALLOC(MTYPE_BGP_CONFED_LIST, bgp->confed_peers, | |
719 | bgp->confed_peers_cnt * sizeof(as_t)); | |
720 | ||
721 | /* Now reset any peer who's remote AS has just been removed from the | |
722 | CONFED */ | |
723 | if (bgp_config_check(bgp, BGP_CONFIG_CONFEDERATION)) { | |
724 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
725 | if (peer->as == as) { | |
b50a0610 | 726 | (void)peer_sort(peer); |
d62a17ae | 727 | peer->local_as = bgp->confed_id; |
728 | if (BGP_IS_VALID_STATE_FOR_NOTIF( | |
729 | peer->status)) { | |
730 | peer->last_reset = | |
731 | PEER_DOWN_CONFED_PEER_CHANGE; | |
732 | bgp_notify_send( | |
733 | peer, BGP_NOTIFY_CEASE, | |
734 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
735 | } else | |
736 | bgp_session_reset_safe(peer, &nnode); | |
737 | } | |
738 | } | |
718e3744 | 739 | } |
718e3744 | 740 | |
d62a17ae | 741 | return 0; |
718e3744 | 742 | } |
6b0655a2 | 743 | |
718e3744 | 744 | /* Local preference configuration. */ |
d7c0a89a | 745 | int bgp_default_local_preference_set(struct bgp *bgp, uint32_t local_pref) |
718e3744 | 746 | { |
d62a17ae | 747 | if (!bgp) |
748 | return -1; | |
718e3744 | 749 | |
d62a17ae | 750 | bgp->default_local_pref = local_pref; |
718e3744 | 751 | |
d62a17ae | 752 | return 0; |
718e3744 | 753 | } |
754 | ||
d62a17ae | 755 | int bgp_default_local_preference_unset(struct bgp *bgp) |
718e3744 | 756 | { |
d62a17ae | 757 | if (!bgp) |
758 | return -1; | |
718e3744 | 759 | |
d62a17ae | 760 | bgp->default_local_pref = BGP_DEFAULT_LOCAL_PREF; |
718e3744 | 761 | |
d62a17ae | 762 | return 0; |
718e3744 | 763 | } |
6b0655a2 | 764 | |
3f9c7369 | 765 | /* Local preference configuration. */ |
d7c0a89a | 766 | int bgp_default_subgroup_pkt_queue_max_set(struct bgp *bgp, uint32_t queue_size) |
3f9c7369 | 767 | { |
d62a17ae | 768 | if (!bgp) |
769 | return -1; | |
3f9c7369 | 770 | |
d62a17ae | 771 | bgp->default_subgroup_pkt_queue_max = queue_size; |
3f9c7369 | 772 | |
d62a17ae | 773 | return 0; |
3f9c7369 DS |
774 | } |
775 | ||
d62a17ae | 776 | int bgp_default_subgroup_pkt_queue_max_unset(struct bgp *bgp) |
3f9c7369 | 777 | { |
d62a17ae | 778 | if (!bgp) |
779 | return -1; | |
780 | bgp->default_subgroup_pkt_queue_max = | |
781 | BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX; | |
3f9c7369 | 782 | |
d62a17ae | 783 | return 0; |
3f9c7369 DS |
784 | } |
785 | ||
f14e6fdb | 786 | /* Listen limit configuration. */ |
d62a17ae | 787 | int bgp_listen_limit_set(struct bgp *bgp, int listen_limit) |
f14e6fdb | 788 | { |
d62a17ae | 789 | if (!bgp) |
790 | return -1; | |
f14e6fdb | 791 | |
d62a17ae | 792 | bgp->dynamic_neighbors_limit = listen_limit; |
f14e6fdb | 793 | |
d62a17ae | 794 | return 0; |
f14e6fdb DS |
795 | } |
796 | ||
d62a17ae | 797 | int bgp_listen_limit_unset(struct bgp *bgp) |
f14e6fdb | 798 | { |
d62a17ae | 799 | if (!bgp) |
800 | return -1; | |
f14e6fdb | 801 | |
d62a17ae | 802 | bgp->dynamic_neighbors_limit = BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT; |
f14e6fdb | 803 | |
d62a17ae | 804 | return 0; |
f14e6fdb DS |
805 | } |
806 | ||
5c525538 RW |
807 | int bgp_map_afi_safi_iana2int(iana_afi_t pkt_afi, iana_safi_t pkt_safi, |
808 | afi_t *afi, safi_t *safi) | |
9cabb64b | 809 | { |
d62a17ae | 810 | /* Map from IANA values to internal values, return error if |
811 | * values are unrecognized. | |
812 | */ | |
813 | *afi = afi_iana2int(pkt_afi); | |
814 | *safi = safi_iana2int(pkt_safi); | |
815 | if (*afi == AFI_MAX || *safi == SAFI_MAX) | |
816 | return -1; | |
9cabb64b | 817 | |
d62a17ae | 818 | return 0; |
9cabb64b | 819 | } |
820 | ||
d62a17ae | 821 | int bgp_map_afi_safi_int2iana(afi_t afi, safi_t safi, iana_afi_t *pkt_afi, |
5c525538 | 822 | iana_safi_t *pkt_safi) |
9cabb64b | 823 | { |
d62a17ae | 824 | /* Map from internal values to IANA values, return error if |
825 | * internal values are bad (unexpected). | |
826 | */ | |
827 | if (afi == AFI_MAX || safi == SAFI_MAX) | |
828 | return -1; | |
829 | *pkt_afi = afi_int2iana(afi); | |
830 | *pkt_safi = safi_int2iana(safi); | |
831 | return 0; | |
9cabb64b | 832 | } |
833 | ||
d62a17ae | 834 | struct peer_af *peer_af_create(struct peer *peer, afi_t afi, safi_t safi) |
3f9c7369 | 835 | { |
d62a17ae | 836 | struct peer_af *af; |
837 | int afid; | |
210ec2a0 | 838 | struct bgp *bgp; |
3f9c7369 | 839 | |
d62a17ae | 840 | if (!peer) |
841 | return NULL; | |
3f9c7369 | 842 | |
d62a17ae | 843 | afid = afindex(afi, safi); |
844 | if (afid >= BGP_AF_MAX) | |
845 | return NULL; | |
3f9c7369 | 846 | |
210ec2a0 | 847 | bgp = peer->bgp; |
d62a17ae | 848 | assert(peer->peer_af_array[afid] == NULL); |
3f9c7369 | 849 | |
d62a17ae | 850 | /* Allocate new peer af */ |
851 | af = XCALLOC(MTYPE_BGP_PEER_AF, sizeof(struct peer_af)); | |
c8560b44 | 852 | |
d62a17ae | 853 | peer->peer_af_array[afid] = af; |
854 | af->afi = afi; | |
855 | af->safi = safi; | |
856 | af->afid = afid; | |
857 | af->peer = peer; | |
210ec2a0 | 858 | bgp->af_peer_count[afi][safi]++; |
3f9c7369 | 859 | |
d62a17ae | 860 | return af; |
3f9c7369 DS |
861 | } |
862 | ||
d62a17ae | 863 | struct peer_af *peer_af_find(struct peer *peer, afi_t afi, safi_t safi) |
3f9c7369 | 864 | { |
d62a17ae | 865 | int afid; |
3f9c7369 | 866 | |
d62a17ae | 867 | if (!peer) |
868 | return NULL; | |
3f9c7369 | 869 | |
d62a17ae | 870 | afid = afindex(afi, safi); |
871 | if (afid >= BGP_AF_MAX) | |
872 | return NULL; | |
3f9c7369 | 873 | |
d62a17ae | 874 | return peer->peer_af_array[afid]; |
3f9c7369 DS |
875 | } |
876 | ||
d62a17ae | 877 | int peer_af_delete(struct peer *peer, afi_t afi, safi_t safi) |
3f9c7369 | 878 | { |
d62a17ae | 879 | struct peer_af *af; |
880 | int afid; | |
210ec2a0 | 881 | struct bgp *bgp; |
3f9c7369 | 882 | |
d62a17ae | 883 | if (!peer) |
884 | return -1; | |
3f9c7369 | 885 | |
d62a17ae | 886 | afid = afindex(afi, safi); |
887 | if (afid >= BGP_AF_MAX) | |
888 | return -1; | |
3f9c7369 | 889 | |
d62a17ae | 890 | af = peer->peer_af_array[afid]; |
891 | if (!af) | |
892 | return -1; | |
3f9c7369 | 893 | |
210ec2a0 | 894 | bgp = peer->bgp; |
46aeabed LS |
895 | bgp_soft_reconfig_table_task_cancel(bgp, bgp->rib[afi][safi], peer); |
896 | ||
d62a17ae | 897 | bgp_stop_announce_route_timer(af); |
3f9c7369 | 898 | |
d62a17ae | 899 | if (PAF_SUBGRP(af)) { |
900 | if (BGP_DEBUG(update_groups, UPDATE_GROUPS)) | |
901 | zlog_debug("u%" PRIu64 ":s%" PRIu64 " remove peer %s", | |
902 | af->subgroup->update_group->id, | |
903 | af->subgroup->id, peer->host); | |
904 | } | |
3f9c7369 | 905 | |
210ec2a0 | 906 | |
d62a17ae | 907 | update_subgroup_remove_peer(af->subgroup, af); |
3f9c7369 | 908 | |
210ec2a0 AS |
909 | if (bgp->af_peer_count[afi][safi]) |
910 | bgp->af_peer_count[afi][safi]--; | |
911 | ||
d62a17ae | 912 | peer->peer_af_array[afid] = NULL; |
913 | XFREE(MTYPE_BGP_PEER_AF, af); | |
914 | return 0; | |
3f9c7369 DS |
915 | } |
916 | ||
eb821189 | 917 | /* Peer comparison function for sorting. */ |
d62a17ae | 918 | int peer_cmp(struct peer *p1, struct peer *p2) |
718e3744 | 919 | { |
d62a17ae | 920 | if (p1->group && !p2->group) |
921 | return -1; | |
0aaa34db | 922 | |
d62a17ae | 923 | if (!p1->group && p2->group) |
924 | return 1; | |
0aaa34db | 925 | |
d62a17ae | 926 | if (p1->group == p2->group) { |
927 | if (p1->conf_if && !p2->conf_if) | |
928 | return -1; | |
0aaa34db | 929 | |
d62a17ae | 930 | if (!p1->conf_if && p2->conf_if) |
931 | return 1; | |
0aaa34db | 932 | |
d62a17ae | 933 | if (p1->conf_if && p2->conf_if) |
934 | return if_cmp_name_func(p1->conf_if, p2->conf_if); | |
935 | } else | |
936 | return strcmp(p1->group->name, p2->group->name); | |
0aaa34db | 937 | |
d62a17ae | 938 | return sockunion_cmp(&p1->su, &p2->su); |
718e3744 | 939 | } |
940 | ||
d8b87afe | 941 | static unsigned int peer_hash_key_make(const void *p) |
dd793e4a | 942 | { |
d8b87afe | 943 | const struct peer *peer = p; |
d62a17ae | 944 | return sockunion_hash(&peer->su); |
dd793e4a DW |
945 | } |
946 | ||
74df8d6d | 947 | static bool peer_hash_same(const void *p1, const void *p2) |
dd793e4a | 948 | { |
d62a17ae | 949 | const struct peer *peer1 = p1; |
950 | const struct peer *peer2 = p2; | |
951 | return (sockunion_same(&peer1->su, &peer2->su) | |
952 | && CHECK_FLAG(peer1->flags, PEER_FLAG_CONFIG_NODE) | |
953 | == CHECK_FLAG(peer2->flags, PEER_FLAG_CONFIG_NODE)); | |
dd793e4a DW |
954 | } |
955 | ||
9fb964de PM |
956 | void peer_flag_inherit(struct peer *peer, uint32_t flag) |
957 | { | |
958 | bool group_val; | |
959 | ||
960 | /* Skip if peer is not a peer-group member. */ | |
961 | if (!peer_group_active(peer)) | |
962 | return; | |
963 | ||
964 | /* Unset override flag to signal inheritance from peer-group. */ | |
965 | UNSET_FLAG(peer->flags_override, flag); | |
966 | ||
967 | /* | |
968 | * Inherit flag state from peer-group. If the flag of the peer-group is | |
969 | * not being inverted, the peer must inherit the inverse of the current | |
970 | * peer-group flag state. | |
971 | */ | |
972 | group_val = CHECK_FLAG(peer->group->conf->flags, flag); | |
973 | if (!CHECK_FLAG(peer->group->conf->flags_invert, flag) | |
974 | && CHECK_FLAG(peer->flags_invert, flag)) | |
975 | COND_FLAG(peer->flags, flag, !group_val); | |
976 | else | |
977 | COND_FLAG(peer->flags, flag, group_val); | |
978 | } | |
979 | ||
d7c0a89a | 980 | int peer_af_flag_check(struct peer *peer, afi_t afi, safi_t safi, uint32_t flag) |
718e3744 | 981 | { |
d62a17ae | 982 | return CHECK_FLAG(peer->af_flags[afi][safi], flag); |
718e3744 | 983 | } |
984 | ||
598ce6bd PM |
985 | void peer_af_flag_inherit(struct peer *peer, afi_t afi, safi_t safi, |
986 | uint32_t flag) | |
88b8ed8d | 987 | { |
527de3dc PM |
988 | bool group_val; |
989 | ||
598ce6bd PM |
990 | /* Skip if peer is not a peer-group member. */ |
991 | if (!peer_group_active(peer)) | |
992 | return; | |
88b8ed8d | 993 | |
598ce6bd PM |
994 | /* Unset override flag to signal inheritance from peer-group. */ |
995 | UNSET_FLAG(peer->af_flags_override[afi][safi], flag); | |
88b8ed8d | 996 | |
527de3dc PM |
997 | /* |
998 | * Inherit flag state from peer-group. If the flag of the peer-group is | |
999 | * not being inverted, the peer must inherit the inverse of the current | |
1000 | * peer-group flag state. | |
1001 | */ | |
1002 | group_val = CHECK_FLAG(peer->group->conf->af_flags[afi][safi], flag); | |
1003 | if (!CHECK_FLAG(peer->group->conf->af_flags_invert[afi][safi], flag) | |
1004 | && CHECK_FLAG(peer->af_flags_invert[afi][safi], flag)) | |
1005 | COND_FLAG(peer->af_flags[afi][safi], flag, !group_val); | |
598ce6bd | 1006 | else |
527de3dc | 1007 | COND_FLAG(peer->af_flags[afi][safi], flag, group_val); |
598ce6bd | 1008 | } |
88b8ed8d | 1009 | |
6d85b15b | 1010 | /* Check peer's AS number and determines if this peer is IBGP or EBGP */ |
82417ac2 | 1011 | static inline bgp_peer_sort_t peer_calc_sort(struct peer *peer) |
718e3744 | 1012 | { |
d62a17ae | 1013 | struct bgp *bgp; |
718e3744 | 1014 | |
d62a17ae | 1015 | bgp = peer->bgp; |
718e3744 | 1016 | |
d62a17ae | 1017 | /* Peer-group */ |
1018 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
1019 | if (peer->as_type == AS_INTERNAL) | |
1020 | return BGP_PEER_IBGP; | |
66b199b2 | 1021 | |
d62a17ae | 1022 | else if (peer->as_type == AS_EXTERNAL) |
1023 | return BGP_PEER_EBGP; | |
66b199b2 | 1024 | |
b575a12c A |
1025 | else if (peer->as_type == AS_SPECIFIED && peer->as) { |
1026 | assert(bgp); | |
d62a17ae | 1027 | return (bgp->as == peer->as ? BGP_PEER_IBGP |
1028 | : BGP_PEER_EBGP); | |
b575a12c | 1029 | } |
66b199b2 | 1030 | |
d62a17ae | 1031 | else { |
1032 | struct peer *peer1; | |
d4f8b537 | 1033 | |
1034 | assert(peer->group); | |
d62a17ae | 1035 | peer1 = listnode_head(peer->group->peer); |
1036 | ||
1037 | if (peer1) | |
1038 | return peer1->sort; | |
1039 | } | |
1040 | return BGP_PEER_INTERNAL; | |
1041 | } | |
1042 | ||
1043 | /* Normal peer */ | |
1044 | if (bgp && CHECK_FLAG(bgp->config, BGP_CONFIG_CONFEDERATION)) { | |
1045 | if (peer->local_as == 0) | |
1046 | return BGP_PEER_INTERNAL; | |
1047 | ||
1048 | if (peer->local_as == peer->as) { | |
1049 | if (bgp->as == bgp->confed_id) { | |
1050 | if (peer->local_as == bgp->as) | |
1051 | return BGP_PEER_IBGP; | |
1052 | else | |
1053 | return BGP_PEER_EBGP; | |
1054 | } else { | |
1055 | if (peer->local_as == bgp->confed_id) | |
1056 | return BGP_PEER_EBGP; | |
1057 | else | |
1058 | return BGP_PEER_IBGP; | |
1059 | } | |
1060 | } | |
1061 | ||
1062 | if (bgp_confederation_peers_check(bgp, peer->as)) | |
1063 | return BGP_PEER_CONFED; | |
1064 | ||
1065 | return BGP_PEER_EBGP; | |
1066 | } else { | |
faa16034 DS |
1067 | if (peer->as_type == AS_UNSPECIFIED) { |
1068 | /* check if in peer-group with AS information */ | |
1069 | if (peer->group | |
1070 | && (peer->group->conf->as_type != AS_UNSPECIFIED)) { | |
1071 | if (peer->group->conf->as_type | |
1072 | == AS_SPECIFIED) { | |
1073 | if (peer->local_as | |
1074 | == peer->group->conf->as) | |
1075 | return BGP_PEER_IBGP; | |
1076 | else | |
1077 | return BGP_PEER_EBGP; | |
1078 | } else if (peer->group->conf->as_type | |
1079 | == AS_INTERNAL) | |
1080 | return BGP_PEER_IBGP; | |
1081 | else | |
1082 | return BGP_PEER_EBGP; | |
1083 | } | |
1084 | /* no AS information anywhere, let caller know */ | |
1085 | return BGP_PEER_UNSPECIFIED; | |
1086 | } else if (peer->as_type != AS_SPECIFIED) | |
d62a17ae | 1087 | return (peer->as_type == AS_INTERNAL ? BGP_PEER_IBGP |
1088 | : BGP_PEER_EBGP); | |
1089 | ||
1090 | return (peer->local_as == 0 | |
1091 | ? BGP_PEER_INTERNAL | |
1092 | : peer->local_as == peer->as ? BGP_PEER_IBGP | |
1093 | : BGP_PEER_EBGP); | |
1094 | } | |
718e3744 | 1095 | } |
1096 | ||
6d85b15b | 1097 | /* Calculate and cache the peer "sort" */ |
d62a17ae | 1098 | bgp_peer_sort_t peer_sort(struct peer *peer) |
1099 | { | |
1100 | peer->sort = peer_calc_sort(peer); | |
1101 | return peer->sort; | |
1102 | } | |
1103 | ||
bf0d28dc DS |
1104 | bgp_peer_sort_t peer_sort_lookup(struct peer *peer) |
1105 | { | |
1106 | return peer->sort; | |
1107 | } | |
1108 | ||
d62a17ae | 1109 | static void peer_free(struct peer *peer) |
1110 | { | |
dcc68b5e MS |
1111 | afi_t afi; |
1112 | safi_t safi; | |
1113 | ||
d62a17ae | 1114 | assert(peer->status == Deleted); |
1115 | ||
1116 | QOBJ_UNREG(peer); | |
1117 | ||
1118 | /* this /ought/ to have been done already through bgp_stop earlier, | |
1119 | * but just to be sure.. | |
1120 | */ | |
1121 | bgp_timer_set(peer); | |
424ab01d QY |
1122 | bgp_reads_off(peer); |
1123 | bgp_writes_off(peer); | |
1124 | assert(!peer->t_write); | |
1125 | assert(!peer->t_read); | |
d62a17ae | 1126 | BGP_EVENT_FLUSH(peer); |
1127 | ||
424ab01d QY |
1128 | pthread_mutex_destroy(&peer->io_mtx); |
1129 | ||
d62a17ae | 1130 | /* Free connected nexthop, if present */ |
1131 | if (CHECK_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE) | |
1132 | && !peer_dynamic_neighbor(peer)) | |
1133 | bgp_delete_connected_nexthop(family2afi(peer->su.sa.sa_family), | |
1134 | peer); | |
1135 | ||
3d1c148b DS |
1136 | FOREACH_AFI_SAFI (afi, safi) { |
1137 | if (peer->filter[afi][safi].advmap.aname) | |
1138 | XFREE(MTYPE_BGP_FILTER_NAME, | |
1139 | peer->filter[afi][safi].advmap.aname); | |
1140 | if (peer->filter[afi][safi].advmap.cname) | |
1141 | XFREE(MTYPE_BGP_FILTER_NAME, | |
1142 | peer->filter[afi][safi].advmap.cname); | |
1143 | } | |
1144 | ||
d62a17ae | 1145 | XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG, peer->tx_shutdown_message); |
1146 | ||
e1b36e13 QY |
1147 | XFREE(MTYPE_PEER_DESC, peer->desc); |
1148 | XFREE(MTYPE_BGP_PEER_HOST, peer->host); | |
1149 | XFREE(MTYPE_BGP_PEER_HOST, peer->domainname); | |
1150 | XFREE(MTYPE_BGP_PEER_IFNAME, peer->ifname); | |
d62a17ae | 1151 | |
1152 | /* Update source configuration. */ | |
1153 | if (peer->update_source) { | |
1154 | sockunion_free(peer->update_source); | |
1155 | peer->update_source = NULL; | |
1156 | } | |
1157 | ||
e1b36e13 | 1158 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer->update_if); |
d62a17ae | 1159 | |
0a22ddfb | 1160 | XFREE(MTYPE_TMP, peer->notify.data); |
d62a17ae | 1161 | memset(&peer->notify, 0, sizeof(struct bgp_notify)); |
1162 | ||
e208c8f9 DS |
1163 | if (peer->clear_node_queue) |
1164 | work_queue_free_and_null(&peer->clear_node_queue); | |
d62a17ae | 1165 | |
1166 | bgp_sync_delete(peer); | |
1167 | ||
e1b36e13 | 1168 | XFREE(MTYPE_PEER_CONF_IF, peer->conf_if); |
d62a17ae | 1169 | |
21bfce98 RZ |
1170 | /* Remove BFD configuration. */ |
1171 | if (peer->bfd_config) | |
1172 | bgp_peer_remove_bfd_config(peer); | |
d62a17ae | 1173 | |
3d1c148b DS |
1174 | FOREACH_AFI_SAFI (afi, safi) |
1175 | bgp_addpath_set_peer_type(peer, afi, safi, BGP_ADDPATH_NONE); | |
dcc68b5e | 1176 | |
d62a17ae | 1177 | bgp_unlock(peer->bgp); |
1178 | ||
1179 | memset(peer, 0, sizeof(struct peer)); | |
1180 | ||
1181 | XFREE(MTYPE_BGP_PEER, peer); | |
1182 | } | |
1183 | ||
200df115 | 1184 | /* increase reference count on a struct peer */ |
d62a17ae | 1185 | struct peer *peer_lock_with_caller(const char *name, struct peer *peer) |
200df115 | 1186 | { |
d62a17ae | 1187 | assert(peer && (peer->lock >= 0)); |
28066f4b DS |
1188 | |
1189 | #if 0 | |
1190 | zlog_debug("%s peer_lock %p %d", name, peer, peer->lock); | |
1191 | #endif | |
d62a17ae | 1192 | |
1193 | peer->lock++; | |
1194 | ||
1195 | return peer; | |
200df115 | 1196 | } |
1197 | ||
1198 | /* decrease reference count on a struct peer | |
1199 | * struct peer is freed and NULL returned if last reference | |
1200 | */ | |
d62a17ae | 1201 | struct peer *peer_unlock_with_caller(const char *name, struct peer *peer) |
200df115 | 1202 | { |
d62a17ae | 1203 | assert(peer && (peer->lock > 0)); |
28066f4b DS |
1204 | |
1205 | #if 0 | |
1206 | zlog_debug("%s peer_unlock %p %d", name, peer, peer->lock); | |
1207 | #endif | |
200df115 | 1208 | |
d62a17ae | 1209 | peer->lock--; |
1210 | ||
1211 | if (peer->lock == 0) { | |
1212 | peer_free(peer); | |
1213 | return NULL; | |
1214 | } | |
1215 | ||
1216 | return peer; | |
200df115 | 1217 | } |
794b37d5 | 1218 | /* BGP GR changes */ |
1219 | ||
1220 | int bgp_global_gr_init(struct bgp *bgp) | |
1221 | { | |
1222 | if (BGP_DEBUG(graceful_restart, GRACEFUL_RESTART)) | |
1223 | zlog_debug("%s called ..", __func__); | |
1224 | ||
2ba1fe69 | 1225 | int local_GLOBAL_GR_FSM[BGP_GLOBAL_GR_MODE][BGP_GLOBAL_GR_EVENT_CMD] = { |
794b37d5 | 1226 | /* GLOBAL_HELPER Mode */ |
1227 | { | |
1228 | /*Event -> */ | |
1229 | /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/ | |
1230 | GLOBAL_GR, GLOBAL_INVALID, | |
1231 | /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/ | |
1232 | GLOBAL_DISABLE, GLOBAL_INVALID | |
1233 | }, | |
1234 | /* GLOBAL_GR Mode */ | |
1235 | { | |
1236 | /*Event -> */ | |
1237 | /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/ | |
1238 | GLOBAL_INVALID, GLOBAL_HELPER, | |
1239 | /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/ | |
1240 | GLOBAL_DISABLE, GLOBAL_INVALID | |
1241 | }, | |
1242 | /* GLOBAL_DISABLE Mode */ | |
1243 | { | |
1244 | /*Event -> */ | |
1245 | /*GLOBAL_GR_cmd */ /*no_Global_GR_cmd*/ | |
1246 | GLOBAL_GR, GLOBAL_INVALID, | |
1247 | /*GLOBAL_DISABLE_cmd*//*no_Global_Disable_cmd*/ | |
1248 | GLOBAL_INVALID, GLOBAL_HELPER | |
1249 | }, | |
1250 | /* GLOBAL_INVALID Mode */ | |
1251 | { | |
1252 | /*Event -> */ | |
1253 | /*GLOBAL_GR_cmd*/ /*no_Global_GR_cmd*/ | |
1254 | GLOBAL_INVALID, GLOBAL_INVALID, | |
1255 | /*GLOBAL_DISABLE_cmd*/ /*no_Global_Disable_cmd*/ | |
1256 | GLOBAL_INVALID, GLOBAL_INVALID | |
1257 | } | |
1258 | }; | |
1259 | memcpy(bgp->GLOBAL_GR_FSM, local_GLOBAL_GR_FSM, | |
1260 | sizeof(local_GLOBAL_GR_FSM)); | |
1261 | ||
1262 | bgp->global_gr_present_state = GLOBAL_HELPER; | |
dc95985f | 1263 | bgp->present_zebra_gr_state = ZEBRA_GR_DISABLE; |
794b37d5 | 1264 | |
1265 | return BGP_GR_SUCCESS; | |
1266 | } | |
1267 | ||
1268 | int bgp_peer_gr_init(struct peer *peer) | |
1269 | { | |
1270 | if (BGP_DEBUG(graceful_restart, GRACEFUL_RESTART)) | |
1271 | zlog_debug("%s called ..", __func__); | |
1272 | ||
2ba1fe69 | 1273 | struct bgp_peer_gr local_Peer_GR_FSM[BGP_PEER_GR_MODE] |
1274 | [BGP_PEER_GR_EVENT_CMD] = { | |
794b37d5 | 1275 | { |
1276 | /* PEER_HELPER Mode */ | |
1277 | /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */ | |
1278 | { PEER_GR, bgp_peer_gr_action }, {PEER_INVALID, NULL }, | |
2ba1fe69 | 1279 | /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */ |
794b37d5 | 1280 | {PEER_DISABLE, bgp_peer_gr_action }, {PEER_INVALID, NULL }, |
1281 | /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */ | |
1282 | { PEER_INVALID, NULL }, {PEER_GLOBAL_INHERIT, | |
1283 | bgp_peer_gr_action } | |
1284 | }, | |
1285 | { | |
1286 | /* PEER_GR Mode */ | |
1287 | /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */ | |
1288 | { PEER_INVALID, NULL }, { PEER_GLOBAL_INHERIT, | |
1289 | bgp_peer_gr_action }, | |
2ba1fe69 | 1290 | /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */ |
794b37d5 | 1291 | {PEER_DISABLE, bgp_peer_gr_action }, { PEER_INVALID, NULL }, |
1292 | /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */ | |
1293 | { PEER_HELPER, bgp_peer_gr_action }, { PEER_INVALID, NULL } | |
1294 | }, | |
1295 | { | |
1296 | /* PEER_DISABLE Mode */ | |
1297 | /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */ | |
1298 | { PEER_GR, bgp_peer_gr_action }, { PEER_INVALID, NULL }, | |
2ba1fe69 | 1299 | /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */ |
794b37d5 | 1300 | { PEER_INVALID, NULL }, { PEER_GLOBAL_INHERIT, |
1301 | bgp_peer_gr_action }, | |
1302 | /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */ | |
1303 | { PEER_HELPER, bgp_peer_gr_action }, { PEER_INVALID, NULL } | |
1304 | }, | |
1305 | { | |
1306 | /* PEER_INVALID Mode */ | |
1307 | /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */ | |
1308 | { PEER_INVALID, NULL }, { PEER_INVALID, NULL }, | |
2ba1fe69 | 1309 | /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */ |
794b37d5 | 1310 | { PEER_INVALID, NULL }, { PEER_INVALID, NULL }, |
1311 | /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */ | |
1312 | { PEER_INVALID, NULL }, { PEER_INVALID, NULL }, | |
1313 | }, | |
1314 | { | |
1315 | /* PEER_GLOBAL_INHERIT Mode */ | |
1316 | /* Event-> */ /* PEER_GR_CMD */ /* NO_PEER_GR_CMD */ | |
1317 | { PEER_GR, bgp_peer_gr_action }, { PEER_INVALID, NULL }, | |
2ba1fe69 | 1318 | /* Event-> */ /* PEER_DISABLE_CMD */ /* NO_PEER_DISABLE_CMD */ |
794b37d5 | 1319 | { PEER_DISABLE, bgp_peer_gr_action}, { PEER_INVALID, NULL }, |
1320 | /* Event-> */ /* PEER_HELPER_cmd */ /* NO_PEER_HELPER_CMD */ | |
1321 | { PEER_HELPER, bgp_peer_gr_action }, { PEER_INVALID, NULL } | |
1322 | } | |
1323 | }; | |
1324 | memcpy(&peer->PEER_GR_FSM, local_Peer_GR_FSM, | |
1325 | sizeof(local_Peer_GR_FSM)); | |
1326 | peer->peer_gr_present_state = PEER_GLOBAL_INHERIT; | |
1327 | bgp_peer_move_to_gr_mode(peer, PEER_GLOBAL_INHERIT); | |
1328 | ||
1329 | return BGP_GR_SUCCESS; | |
1330 | } | |
1ff9a340 | 1331 | |
92a9e6f2 HS |
1332 | static void bgp_srv6_init(struct bgp *bgp) |
1333 | { | |
1334 | bgp->srv6_enabled = false; | |
1335 | memset(bgp->srv6_locator_name, 0, sizeof(bgp->srv6_locator_name)); | |
1336 | bgp->srv6_locator_chunks = list_new(); | |
1337 | bgp->srv6_functions = list_new(); | |
1338 | } | |
1339 | ||
1340 | static void bgp_srv6_cleanup(struct bgp *bgp) | |
1341 | { | |
124f7236 HS |
1342 | if (bgp->srv6_locator_chunks) |
1343 | list_delete(&bgp->srv6_locator_chunks); | |
1344 | if (bgp->srv6_functions) | |
1345 | list_delete(&bgp->srv6_functions); | |
92a9e6f2 HS |
1346 | } |
1347 | ||
200df115 | 1348 | /* Allocate new peer object, implicitely locked. */ |
d62a17ae | 1349 | struct peer *peer_new(struct bgp *bgp) |
1350 | { | |
1351 | afi_t afi; | |
1352 | safi_t safi; | |
1353 | struct peer *peer; | |
1354 | struct servent *sp; | |
1355 | ||
1356 | /* bgp argument is absolutely required */ | |
1357 | assert(bgp); | |
d62a17ae | 1358 | |
1359 | /* Allocate new peer. */ | |
1360 | peer = XCALLOC(MTYPE_BGP_PEER, sizeof(struct peer)); | |
1361 | ||
1362 | /* Set default value. */ | |
1363 | peer->fd = -1; | |
1364 | peer->v_start = BGP_INIT_START_TIMER; | |
5d5393b9 | 1365 | peer->v_connect = bgp->default_connect_retry; |
d62a17ae | 1366 | peer->status = Idle; |
1367 | peer->ostatus = Idle; | |
1368 | peer->cur_event = peer->last_event = peer->last_major_event = 0; | |
92375c91 | 1369 | peer->bgp = bgp_lock(bgp); |
d62a17ae | 1370 | peer = peer_lock(peer); /* initial reference */ |
d62a17ae | 1371 | peer->password = NULL; |
556beacf | 1372 | peer->max_packet_size = BGP_MAX_PACKET_SIZE; |
d62a17ae | 1373 | |
27c05d4d | 1374 | /* Set default flags. */ |
05c7a1cc | 1375 | FOREACH_AFI_SAFI (afi, safi) { |
d8a9922d DS |
1376 | SET_FLAG(peer->af_flags[afi][safi], PEER_FLAG_SEND_COMMUNITY); |
1377 | SET_FLAG(peer->af_flags[afi][safi], | |
1378 | PEER_FLAG_SEND_EXT_COMMUNITY); | |
1379 | SET_FLAG(peer->af_flags[afi][safi], | |
1380 | PEER_FLAG_SEND_LARGE_COMMUNITY); | |
1381 | ||
1382 | SET_FLAG(peer->af_flags_invert[afi][safi], | |
1383 | PEER_FLAG_SEND_COMMUNITY); | |
1384 | SET_FLAG(peer->af_flags_invert[afi][safi], | |
1385 | PEER_FLAG_SEND_EXT_COMMUNITY); | |
1386 | SET_FLAG(peer->af_flags_invert[afi][safi], | |
1387 | PEER_FLAG_SEND_LARGE_COMMUNITY); | |
dcc68b5e | 1388 | peer->addpath_type[afi][safi] = BGP_ADDPATH_NONE; |
05c7a1cc | 1389 | } |
637315fc | 1390 | |
bd23c840 PR |
1391 | /* set nexthop-unchanged for l2vpn evpn by default */ |
1392 | SET_FLAG(peer->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1393 | PEER_FLAG_NEXTHOP_UNCHANGED); | |
1394 | ||
d62a17ae | 1395 | SET_FLAG(peer->sflags, PEER_STATUS_CAPABILITY_OPEN); |
718e3744 | 1396 | |
794b37d5 | 1397 | /* Initialize per peer bgp GR FSM */ |
1398 | bgp_peer_gr_init(peer); | |
1399 | ||
d62a17ae | 1400 | /* Create buffers. */ |
424ab01d | 1401 | peer->ibuf = stream_fifo_new(); |
d62a17ae | 1402 | peer->obuf = stream_fifo_new(); |
424ab01d | 1403 | pthread_mutex_init(&peer->io_mtx, NULL); |
0a91ff55 | 1404 | |
424ab01d | 1405 | /* We use a larger buffer for peer->obuf_work in the event that: |
d62a17ae | 1406 | * - We RX a BGP_UPDATE where the attributes alone are just |
556beacf | 1407 | * under BGP_EXTENDED_MESSAGE_MAX_PACKET_SIZE. |
d62a17ae | 1408 | * - The user configures an outbound route-map that does many as-path |
09f6d019 QY |
1409 | * prepends or adds many communities. At most they can have |
1410 | * CMD_ARGC_MAX args in a route-map so there is a finite limit on how | |
1411 | * large they can make the attributes. | |
d62a17ae | 1412 | * |
1413 | * Having a buffer with BGP_MAX_PACKET_SIZE_OVERFLOW allows us to avoid | |
09f6d019 QY |
1414 | * bounds checking for every single attribute as we construct an |
1415 | * UPDATE. | |
d62a17ae | 1416 | */ |
556beacf QY |
1417 | peer->obuf_work = |
1418 | stream_new(BGP_MAX_PACKET_SIZE + BGP_MAX_PACKET_SIZE_OVERFLOW); | |
1419 | peer->ibuf_work = | |
1420 | ringbuf_new(BGP_MAX_PACKET_SIZE * BGP_READ_PACKET_MAX); | |
74ffbfe6 | 1421 | |
556beacf | 1422 | peer->scratch = stream_new(BGP_MAX_PACKET_SIZE); |
718e3744 | 1423 | |
d62a17ae | 1424 | bgp_sync_init(peer); |
718e3744 | 1425 | |
d62a17ae | 1426 | /* Get service port number. */ |
1427 | sp = getservbyname("bgp", "tcp"); | |
1428 | peer->port = (sp == NULL) ? BGP_PORT_DEFAULT : ntohs(sp->s_port); | |
718e3744 | 1429 | |
d62a17ae | 1430 | QOBJ_REG(peer, peer); |
1431 | return peer; | |
718e3744 | 1432 | } |
1433 | ||
1ff9a340 DS |
1434 | /* |
1435 | * This function is invoked when a duplicate peer structure associated with | |
1436 | * a neighbor is being deleted. If this about-to-be-deleted structure is | |
1437 | * the one with all the config, then we have to copy over the info. | |
1438 | */ | |
d62a17ae | 1439 | void peer_xfer_config(struct peer *peer_dst, struct peer *peer_src) |
1440 | { | |
1441 | struct peer_af *paf; | |
1442 | afi_t afi; | |
1443 | safi_t safi; | |
1444 | int afidx; | |
1445 | ||
1446 | assert(peer_src); | |
1447 | assert(peer_dst); | |
1448 | ||
1449 | /* The following function is used by both peer group config copy to | |
1450 | * individual peer and when we transfer config | |
1451 | */ | |
1452 | if (peer_src->change_local_as) | |
1453 | peer_dst->change_local_as = peer_src->change_local_as; | |
1454 | ||
1455 | /* peer flags apply */ | |
1456 | peer_dst->flags = peer_src->flags; | |
1457 | peer_dst->cap = peer_src->cap; | |
d62a17ae | 1458 | |
d7b3cda6 | 1459 | peer_dst->peer_gr_present_state = peer_src->peer_gr_present_state; |
1460 | peer_dst->peer_gr_new_status_flag = peer_src->peer_gr_new_status_flag; | |
1461 | ||
d62a17ae | 1462 | peer_dst->local_as = peer_src->local_as; |
d62a17ae | 1463 | peer_dst->port = peer_src->port; |
4ab46701 AR |
1464 | /* copy tcp_mss value */ |
1465 | peer_dst->tcp_mss = peer_src->tcp_mss; | |
82417ac2 | 1466 | (void)peer_sort(peer_dst); |
d62a17ae | 1467 | peer_dst->rmap_type = peer_src->rmap_type; |
1468 | ||
1469 | /* Timers */ | |
1470 | peer_dst->holdtime = peer_src->holdtime; | |
1471 | peer_dst->keepalive = peer_src->keepalive; | |
1472 | peer_dst->connect = peer_src->connect; | |
6c537a18 | 1473 | peer_dst->delayopen = peer_src->delayopen; |
d62a17ae | 1474 | peer_dst->v_holdtime = peer_src->v_holdtime; |
1475 | peer_dst->v_keepalive = peer_src->v_keepalive; | |
1476 | peer_dst->routeadv = peer_src->routeadv; | |
1477 | peer_dst->v_routeadv = peer_src->v_routeadv; | |
6c537a18 | 1478 | peer_dst->v_delayopen = peer_src->v_delayopen; |
d62a17ae | 1479 | |
1480 | /* password apply */ | |
1481 | if (peer_src->password && !peer_dst->password) | |
1482 | peer_dst->password = | |
1483 | XSTRDUP(MTYPE_PEER_PASSWORD, peer_src->password); | |
1484 | ||
05c7a1cc QY |
1485 | FOREACH_AFI_SAFI (afi, safi) { |
1486 | peer_dst->afc[afi][safi] = peer_src->afc[afi][safi]; | |
1487 | peer_dst->af_flags[afi][safi] = peer_src->af_flags[afi][safi]; | |
1488 | peer_dst->allowas_in[afi][safi] = | |
1489 | peer_src->allowas_in[afi][safi]; | |
1490 | peer_dst->weight[afi][safi] = peer_src->weight[afi][safi]; | |
dcc68b5e MS |
1491 | peer_dst->addpath_type[afi][safi] = |
1492 | peer_src->addpath_type[afi][safi]; | |
05c7a1cc | 1493 | } |
d62a17ae | 1494 | |
1495 | for (afidx = BGP_AF_START; afidx < BGP_AF_MAX; afidx++) { | |
1496 | paf = peer_src->peer_af_array[afidx]; | |
e84c59af DA |
1497 | if (paf != NULL) { |
1498 | if (!peer_af_find(peer_dst, paf->afi, paf->safi)) | |
1499 | peer_af_create(peer_dst, paf->afi, paf->safi); | |
1500 | } | |
d62a17ae | 1501 | } |
1502 | ||
1503 | /* update-source apply */ | |
1504 | if (peer_src->update_source) { | |
1505 | if (peer_dst->update_source) | |
1506 | sockunion_free(peer_dst->update_source); | |
e1b36e13 | 1507 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer_dst->update_if); |
d62a17ae | 1508 | peer_dst->update_source = |
1509 | sockunion_dup(peer_src->update_source); | |
1510 | } else if (peer_src->update_if) { | |
0a22ddfb | 1511 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer_dst->update_if); |
d62a17ae | 1512 | if (peer_dst->update_source) { |
1513 | sockunion_free(peer_dst->update_source); | |
1514 | peer_dst->update_source = NULL; | |
1515 | } | |
1516 | peer_dst->update_if = | |
1517 | XSTRDUP(MTYPE_PEER_UPDATE_SOURCE, peer_src->update_if); | |
1518 | } | |
1519 | ||
1520 | if (peer_src->ifname) { | |
0a22ddfb | 1521 | XFREE(MTYPE_BGP_PEER_IFNAME, peer_dst->ifname); |
d62a17ae | 1522 | |
1523 | peer_dst->ifname = | |
1524 | XSTRDUP(MTYPE_BGP_PEER_IFNAME, peer_src->ifname); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | static int bgp_peer_conf_if_to_su_update_v4(struct peer *peer, | |
1529 | struct interface *ifp) | |
1530 | { | |
1531 | struct connected *ifc; | |
1532 | struct prefix p; | |
d7c0a89a | 1533 | uint32_t addr; |
d62a17ae | 1534 | struct listnode *node; |
1535 | ||
1536 | /* If our IPv4 address on the interface is /30 or /31, we can derive the | |
1537 | * IPv4 address of the other end. | |
1538 | */ | |
1539 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
1540 | if (ifc->address && (ifc->address->family == AF_INET)) { | |
1541 | PREFIX_COPY_IPV4(&p, CONNECTED_PREFIX(ifc)); | |
1542 | if (p.prefixlen == 30) { | |
1543 | peer->su.sa.sa_family = AF_INET; | |
1544 | addr = ntohl(p.u.prefix4.s_addr); | |
1545 | if (addr % 4 == 1) | |
1546 | peer->su.sin.sin_addr.s_addr = | |
1547 | htonl(addr + 1); | |
1548 | else if (addr % 4 == 2) | |
1549 | peer->su.sin.sin_addr.s_addr = | |
1550 | htonl(addr - 1); | |
8ffedcea | 1551 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 1552 | peer->su.sin.sin_len = |
1553 | sizeof(struct sockaddr_in); | |
8ffedcea | 1554 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 1555 | return 1; |
1556 | } else if (p.prefixlen == 31) { | |
1557 | peer->su.sa.sa_family = AF_INET; | |
1558 | addr = ntohl(p.u.prefix4.s_addr); | |
1559 | if (addr % 2 == 0) | |
1560 | peer->su.sin.sin_addr.s_addr = | |
1561 | htonl(addr + 1); | |
1562 | else | |
1563 | peer->su.sin.sin_addr.s_addr = | |
1564 | htonl(addr - 1); | |
8ffedcea | 1565 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 1566 | peer->su.sin.sin_len = |
1567 | sizeof(struct sockaddr_in); | |
8ffedcea | 1568 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 1569 | return 1; |
1570 | } else if (bgp_debug_neighbor_events(peer)) | |
1571 | zlog_debug( | |
1572 | "%s: IPv4 interface address is not /30 or /31, v4 session not started", | |
1573 | peer->conf_if); | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | return 0; | |
1578 | } | |
1579 | ||
3dc339cd DA |
1580 | static bool bgp_peer_conf_if_to_su_update_v6(struct peer *peer, |
1581 | struct interface *ifp) | |
d62a17ae | 1582 | { |
1583 | struct nbr_connected *ifc_nbr; | |
1584 | ||
1585 | /* Have we learnt the peer's IPv6 link-local address? */ | |
1586 | if (ifp->nbr_connected | |
1587 | && (ifc_nbr = listnode_head(ifp->nbr_connected))) { | |
1588 | peer->su.sa.sa_family = AF_INET6; | |
1589 | memcpy(&peer->su.sin6.sin6_addr, &ifc_nbr->address->u.prefix, | |
1590 | sizeof(struct in6_addr)); | |
a80beece | 1591 | #ifdef SIN6_LEN |
d62a17ae | 1592 | peer->su.sin6.sin6_len = sizeof(struct sockaddr_in6); |
a80beece | 1593 | #endif |
d62a17ae | 1594 | peer->su.sin6.sin6_scope_id = ifp->ifindex; |
3dc339cd | 1595 | return true; |
d62a17ae | 1596 | } |
8ffedcea | 1597 | |
3dc339cd | 1598 | return false; |
89ca90fa | 1599 | } |
1600 | ||
1601 | /* | |
1602 | * Set or reset the peer address socketunion structure based on the | |
1603 | * learnt/derived peer address. If the address has changed, update the | |
1604 | * password on the listen socket, if needed. | |
1605 | */ | |
d62a17ae | 1606 | void bgp_peer_conf_if_to_su_update(struct peer *peer) |
1607 | { | |
1608 | struct interface *ifp; | |
1609 | int prev_family; | |
1610 | int peer_addr_updated = 0; | |
1611 | ||
1612 | if (!peer->conf_if) | |
1613 | return; | |
1614 | ||
d12b745c DS |
1615 | /* |
1616 | * Our peer structure is stored in the bgp->peerhash | |
1617 | * release it before we modify anything. | |
1618 | */ | |
1619 | hash_release(peer->bgp->peerhash, peer); | |
1620 | ||
d62a17ae | 1621 | prev_family = peer->su.sa.sa_family; |
a36898e7 | 1622 | if ((ifp = if_lookup_by_name(peer->conf_if, peer->bgp->vrf_id))) { |
d62a17ae | 1623 | peer->ifp = ifp; |
1624 | /* If BGP unnumbered is not "v6only", we first see if we can | |
1625 | * derive the | |
1626 | * peer's IPv4 address. | |
1627 | */ | |
1628 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_IFPEER_V6ONLY)) | |
1629 | peer_addr_updated = | |
1630 | bgp_peer_conf_if_to_su_update_v4(peer, ifp); | |
1631 | ||
1632 | /* If "v6only" or we can't derive peer's IPv4 address, see if | |
1633 | * we've | |
1634 | * learnt the peer's IPv6 link-local address. This is from the | |
1635 | * source | |
1636 | * IPv6 address in router advertisement. | |
1637 | */ | |
1638 | if (!peer_addr_updated) | |
1639 | peer_addr_updated = | |
1640 | bgp_peer_conf_if_to_su_update_v6(peer, ifp); | |
1641 | } | |
1642 | /* If we could derive the peer address, we may need to install the | |
1643 | * password | |
1644 | * configured for the peer, if any, on the listen socket. Otherwise, | |
1645 | * mark | |
1646 | * that peer's address is not available and uninstall the password, if | |
1647 | * needed. | |
1648 | */ | |
1649 | if (peer_addr_updated) { | |
a14810f4 PM |
1650 | if (CHECK_FLAG(peer->flags, PEER_FLAG_PASSWORD) |
1651 | && prev_family == AF_UNSPEC) | |
d62a17ae | 1652 | bgp_md5_set(peer); |
1653 | } else { | |
a14810f4 PM |
1654 | if (CHECK_FLAG(peer->flags, PEER_FLAG_PASSWORD) |
1655 | && prev_family != AF_UNSPEC) | |
d62a17ae | 1656 | bgp_md5_unset(peer); |
1657 | peer->su.sa.sa_family = AF_UNSPEC; | |
1658 | memset(&peer->su.sin6.sin6_addr, 0, sizeof(struct in6_addr)); | |
1659 | } | |
1660 | ||
d12b745c DS |
1661 | /* |
1662 | * Since our su changed we need to del/add peer to the peerhash | |
1663 | */ | |
d62a17ae | 1664 | hash_get(peer->bgp->peerhash, peer, hash_alloc_intern); |
a80beece DS |
1665 | } |
1666 | ||
318cac96 DW |
1667 | static void bgp_recalculate_afi_safi_bestpaths(struct bgp *bgp, afi_t afi, |
1668 | safi_t safi) | |
1669 | { | |
9bcb3eef | 1670 | struct bgp_dest *dest, *ndest; |
67009e22 | 1671 | struct bgp_table *table; |
318cac96 | 1672 | |
9bcb3eef DS |
1673 | for (dest = bgp_table_top(bgp->rib[afi][safi]); dest; |
1674 | dest = bgp_route_next(dest)) { | |
1675 | table = bgp_dest_get_bgp_table_info(dest); | |
67009e22 | 1676 | if (table != NULL) { |
318cac96 DW |
1677 | /* Special handling for 2-level routing |
1678 | * tables. */ | |
a4d82a8a | 1679 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP |
318cac96 | 1680 | || safi == SAFI_EVPN) { |
9bcb3eef DS |
1681 | for (ndest = bgp_table_top(table); ndest; |
1682 | ndest = bgp_route_next(ndest)) | |
1683 | bgp_process(bgp, ndest, afi, safi); | |
318cac96 | 1684 | } else |
9bcb3eef | 1685 | bgp_process(bgp, dest, afi, safi); |
318cac96 DW |
1686 | } |
1687 | } | |
1688 | } | |
1689 | ||
06370dac DW |
1690 | /* Force a bestpath recalculation for all prefixes. This is used |
1691 | * when 'bgp bestpath' commands are entered. | |
1692 | */ | |
d62a17ae | 1693 | void bgp_recalculate_all_bestpaths(struct bgp *bgp) |
1694 | { | |
1695 | afi_t afi; | |
1696 | safi_t safi; | |
d62a17ae | 1697 | |
05c7a1cc QY |
1698 | FOREACH_AFI_SAFI (afi, safi) { |
1699 | bgp_recalculate_afi_safi_bestpaths(bgp, afi, safi); | |
d62a17ae | 1700 | } |
06370dac DW |
1701 | } |
1702 | ||
19bd3dff DS |
1703 | /* |
1704 | * Create new BGP peer. | |
1705 | * | |
1706 | * conf_if and su are mutually exclusive if configuring from the cli. | |
1707 | * If we are handing a doppelganger, then we *must* pass in both | |
1708 | * the original peer's su and conf_if, so that we can appropriately | |
1709 | * track the bgp->peerhash( ie we don't want to remove the current | |
1710 | * one from the config ). | |
1711 | */ | |
d62a17ae | 1712 | struct peer *peer_create(union sockunion *su, const char *conf_if, |
1713 | struct bgp *bgp, as_t local_as, as_t remote_as, | |
e84c59af | 1714 | int as_type, struct peer_group *group) |
d62a17ae | 1715 | { |
1716 | int active; | |
1717 | struct peer *peer; | |
1718 | char buf[SU_ADDRSTRLEN]; | |
e84c59af DA |
1719 | afi_t afi; |
1720 | safi_t safi; | |
d62a17ae | 1721 | |
1722 | peer = peer_new(bgp); | |
1723 | if (conf_if) { | |
1724 | peer->conf_if = XSTRDUP(MTYPE_PEER_CONF_IF, conf_if); | |
19bd3dff DS |
1725 | if (su) |
1726 | peer->su = *su; | |
1727 | else | |
1728 | bgp_peer_conf_if_to_su_update(peer); | |
0a22ddfb | 1729 | XFREE(MTYPE_BGP_PEER_HOST, peer->host); |
d62a17ae | 1730 | peer->host = XSTRDUP(MTYPE_BGP_PEER_HOST, conf_if); |
1731 | } else if (su) { | |
1732 | peer->su = *su; | |
1733 | sockunion2str(su, buf, SU_ADDRSTRLEN); | |
0a22ddfb | 1734 | XFREE(MTYPE_BGP_PEER_HOST, peer->host); |
d62a17ae | 1735 | peer->host = XSTRDUP(MTYPE_BGP_PEER_HOST, buf); |
1736 | } | |
1737 | peer->local_as = local_as; | |
1738 | peer->as = remote_as; | |
1739 | peer->as_type = as_type; | |
1740 | peer->local_id = bgp->router_id; | |
1741 | peer->v_holdtime = bgp->default_holdtime; | |
1742 | peer->v_keepalive = bgp->default_keepalive; | |
b90a8e13 PM |
1743 | peer->v_routeadv = (peer_sort(peer) == BGP_PEER_IBGP) |
1744 | ? BGP_DEFAULT_IBGP_ROUTEADV | |
1745 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
d62a17ae | 1746 | |
1747 | peer = peer_lock(peer); /* bgp peer list reference */ | |
1748 | peer->group = group; | |
1749 | listnode_add_sort(bgp->peer, peer); | |
1750 | hash_get(bgp->peerhash, peer, hash_alloc_intern); | |
1751 | ||
4961a5a2 | 1752 | /* Adjust update-group coalesce timer heuristics for # peers. */ |
37a333fe | 1753 | if (bgp->heuristic_coalesce) { |
14b8641a QY |
1754 | long ct = BGP_DEFAULT_SUBGROUP_COALESCE_TIME |
1755 | + (bgp->peer->count | |
1756 | * BGP_PEER_ADJUST_SUBGROUP_COALESCE_TIME); | |
1757 | bgp->coalesce_time = MIN(BGP_MAX_SUBGROUP_COALESCE_TIME, ct); | |
1758 | } | |
4961a5a2 | 1759 | |
d62a17ae | 1760 | active = peer_active(peer); |
05912a17 DD |
1761 | if (!active) { |
1762 | if (peer->su.sa.sa_family == AF_UNSPEC) | |
1763 | peer->last_reset = PEER_DOWN_NBR_ADDR; | |
1764 | else | |
1765 | peer->last_reset = PEER_DOWN_NOAFI_ACTIVATED; | |
1766 | } | |
d62a17ae | 1767 | |
1768 | /* Last read and reset time set */ | |
1769 | peer->readtime = peer->resettime = bgp_clock(); | |
1770 | ||
1771 | /* Default TTL set. */ | |
a0903cd2 | 1772 | peer->ttl = (peer->sort == BGP_PEER_IBGP) ? MAXTTL : BGP_DEFAULT_TTL; |
d62a17ae | 1773 | |
8336c896 DA |
1774 | /* Default configured keepalives count for shutdown rtt command */ |
1775 | peer->rtt_keepalive_conf = 1; | |
1776 | ||
d62a17ae | 1777 | SET_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE); |
1778 | ||
b16bcbba TA |
1779 | /* If 'bgp default <afi>-<safi>' is configured, then activate the |
1780 | * neighbor for the corresponding address family. IPv4 Unicast is | |
1781 | * the only address family enabled by default without expliict | |
1782 | * configuration. | |
e84c59af DA |
1783 | */ |
1784 | FOREACH_AFI_SAFI (afi, safi) { | |
1785 | if ((afi == AFI_IP || afi == AFI_IP6) && safi == SAFI_UNICAST) { | |
1786 | if ((afi == AFI_IP | |
b16bcbba | 1787 | && bgp->default_af[AFI_IP][SAFI_UNICAST]) |
e84c59af | 1788 | || (afi == AFI_IP6 |
b16bcbba | 1789 | && bgp->default_af[AFI_IP6][SAFI_UNICAST])) { |
e84c59af DA |
1790 | peer->afc[afi][safi] = 1; |
1791 | peer_af_create(peer, afi, safi); | |
1792 | } | |
1793 | } | |
d62a17ae | 1794 | } |
1795 | ||
f26845f9 QY |
1796 | /* auto shutdown if configured */ |
1797 | if (bgp->autoshutdown) | |
1798 | peer_flag_set(peer, PEER_FLAG_SHUTDOWN); | |
d62a17ae | 1799 | /* Set up peer's events and timers. */ |
f26845f9 | 1800 | else if (!active && peer_active(peer)) |
d62a17ae | 1801 | bgp_timer_set(peer); |
1802 | ||
794b37d5 | 1803 | bgp_peer_gr_flags_update(peer); |
36235319 | 1804 | BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp, bgp->peer); |
dc95985f | 1805 | |
d62a17ae | 1806 | return peer; |
718e3744 | 1807 | } |
1808 | ||
dd793e4a | 1809 | /* Make accept BGP peer. This function is only called from the test code */ |
d62a17ae | 1810 | struct peer *peer_create_accept(struct bgp *bgp) |
eb821189 | 1811 | { |
d62a17ae | 1812 | struct peer *peer; |
eb821189 | 1813 | |
d62a17ae | 1814 | peer = peer_new(bgp); |
1ff9a340 | 1815 | |
d62a17ae | 1816 | peer = peer_lock(peer); /* bgp peer list reference */ |
1817 | listnode_add_sort(bgp->peer, peer); | |
eb821189 | 1818 | |
d62a17ae | 1819 | return peer; |
eb821189 | 1820 | } |
1821 | ||
318cac96 DW |
1822 | /* |
1823 | * Return true if we have a peer configured to use this afi/safi | |
1824 | */ | |
1825 | int bgp_afi_safi_peer_exists(struct bgp *bgp, afi_t afi, safi_t safi) | |
1826 | { | |
1827 | struct listnode *node; | |
1828 | struct peer *peer; | |
1829 | ||
1830 | for (ALL_LIST_ELEMENTS_RO(bgp->peer, node, peer)) { | |
1831 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE)) | |
1832 | continue; | |
1833 | ||
1834 | if (peer->afc[afi][safi]) | |
1835 | return 1; | |
1836 | } | |
1837 | ||
1838 | return 0; | |
1839 | } | |
1840 | ||
718e3744 | 1841 | /* Change peer's AS number. */ |
d62a17ae | 1842 | void peer_as_change(struct peer *peer, as_t as, int as_specified) |
1843 | { | |
469cbb0f | 1844 | bgp_peer_sort_t origtype, newtype; |
d62a17ae | 1845 | |
1846 | /* Stop peer. */ | |
1847 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
1848 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { | |
1849 | peer->last_reset = PEER_DOWN_REMOTE_AS_CHANGE; | |
1850 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
1851 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
1852 | } else | |
1853 | bgp_session_reset(peer); | |
1854 | } | |
469cbb0f | 1855 | origtype = peer_sort_lookup(peer); |
d62a17ae | 1856 | peer->as = as; |
1857 | peer->as_type = as_specified; | |
1858 | ||
1859 | if (bgp_config_check(peer->bgp, BGP_CONFIG_CONFEDERATION) | |
1860 | && !bgp_confederation_peers_check(peer->bgp, as) | |
1861 | && peer->bgp->as != as) | |
1862 | peer->local_as = peer->bgp->confed_id; | |
1863 | else | |
1864 | peer->local_as = peer->bgp->as; | |
1865 | ||
469cbb0f | 1866 | newtype = peer_sort(peer); |
d62a17ae | 1867 | /* Advertisement-interval reset */ |
b90a8e13 | 1868 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_ROUTEADV)) { |
469cbb0f | 1869 | peer->v_routeadv = (newtype == BGP_PEER_IBGP) |
b90a8e13 PM |
1870 | ? BGP_DEFAULT_IBGP_ROUTEADV |
1871 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
d62a17ae | 1872 | } |
b90a8e13 | 1873 | |
d62a17ae | 1874 | /* TTL reset */ |
469cbb0f | 1875 | if (newtype == BGP_PEER_IBGP) |
d62a17ae | 1876 | peer->ttl = MAXTTL; |
469cbb0f | 1877 | else if (origtype == BGP_PEER_IBGP) |
a0903cd2 | 1878 | peer->ttl = BGP_DEFAULT_TTL; |
d62a17ae | 1879 | |
1880 | /* reflector-client reset */ | |
469cbb0f | 1881 | if (newtype != BGP_PEER_IBGP) { |
d62a17ae | 1882 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_UNICAST], |
1883 | PEER_FLAG_REFLECTOR_CLIENT); | |
1884 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_MULTICAST], | |
1885 | PEER_FLAG_REFLECTOR_CLIENT); | |
1886 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_LABELED_UNICAST], | |
1887 | PEER_FLAG_REFLECTOR_CLIENT); | |
1888 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_MPLS_VPN], | |
1889 | PEER_FLAG_REFLECTOR_CLIENT); | |
1890 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_ENCAP], | |
1891 | PEER_FLAG_REFLECTOR_CLIENT); | |
7c40bf39 | 1892 | UNSET_FLAG(peer->af_flags[AFI_IP][SAFI_FLOWSPEC], |
1893 | PEER_FLAG_REFLECTOR_CLIENT); | |
d62a17ae | 1894 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_UNICAST], |
1895 | PEER_FLAG_REFLECTOR_CLIENT); | |
1896 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_MULTICAST], | |
1897 | PEER_FLAG_REFLECTOR_CLIENT); | |
1898 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_LABELED_UNICAST], | |
1899 | PEER_FLAG_REFLECTOR_CLIENT); | |
1900 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_MPLS_VPN], | |
1901 | PEER_FLAG_REFLECTOR_CLIENT); | |
1902 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_ENCAP], | |
1903 | PEER_FLAG_REFLECTOR_CLIENT); | |
7c40bf39 | 1904 | UNSET_FLAG(peer->af_flags[AFI_IP6][SAFI_FLOWSPEC], |
1905 | PEER_FLAG_REFLECTOR_CLIENT); | |
d62a17ae | 1906 | UNSET_FLAG(peer->af_flags[AFI_L2VPN][SAFI_EVPN], |
1907 | PEER_FLAG_REFLECTOR_CLIENT); | |
1908 | } | |
1909 | ||
1910 | /* local-as reset */ | |
469cbb0f | 1911 | if (newtype != BGP_PEER_EBGP) { |
d62a17ae | 1912 | peer->change_local_as = 0; |
a14810f4 PM |
1913 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS); |
1914 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
1915 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
d62a17ae | 1916 | } |
718e3744 | 1917 | } |
1918 | ||
1919 | /* If peer does not exist, create new one. If peer already exists, | |
1920 | set AS number to the peer. */ | |
d62a17ae | 1921 | int peer_remote_as(struct bgp *bgp, union sockunion *su, const char *conf_if, |
e84c59af | 1922 | as_t *as, int as_type) |
d62a17ae | 1923 | { |
1924 | struct peer *peer; | |
1925 | as_t local_as; | |
1926 | ||
1927 | if (conf_if) | |
1928 | peer = peer_lookup_by_conf_if(bgp, conf_if); | |
1929 | else | |
1930 | peer = peer_lookup(bgp, su); | |
1931 | ||
1932 | if (peer) { | |
1933 | /* Not allowed for a dynamic peer. */ | |
1934 | if (peer_dynamic_neighbor(peer)) { | |
1935 | *as = peer->as; | |
1936 | return BGP_ERR_INVALID_FOR_DYNAMIC_PEER; | |
1937 | } | |
718e3744 | 1938 | |
d62a17ae | 1939 | /* When this peer is a member of peer-group. */ |
1940 | if (peer->group) { | |
faa16034 DS |
1941 | /* peer-group already has AS number/internal/external */ |
1942 | if (peer->group->conf->as | |
1943 | || peer->group->conf->as_type) { | |
d62a17ae | 1944 | /* Return peer group's AS number. */ |
1945 | *as = peer->group->conf->as; | |
1946 | return BGP_ERR_PEER_GROUP_MEMBER; | |
1947 | } | |
faa16034 DS |
1948 | |
1949 | bgp_peer_sort_t peer_sort_type = | |
1950 | peer_sort(peer->group->conf); | |
1951 | ||
1952 | /* Explicit AS numbers used, compare AS numbers */ | |
1953 | if (as_type == AS_SPECIFIED) { | |
1954 | if (((peer_sort_type == BGP_PEER_IBGP) | |
1955 | && (bgp->as != *as)) | |
1956 | || ((peer_sort_type == BGP_PEER_EBGP) | |
1957 | && (bgp->as == *as))) { | |
d62a17ae | 1958 | *as = peer->as; |
1959 | return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT; | |
1960 | } | |
1961 | } else { | |
faa16034 DS |
1962 | /* internal/external used, compare as-types */ |
1963 | if (((peer_sort_type == BGP_PEER_IBGP) | |
1964 | && (as_type != AS_INTERNAL)) | |
1965 | || ((peer_sort_type == BGP_PEER_EBGP) | |
1966 | && (as_type != AS_EXTERNAL))) { | |
d62a17ae | 1967 | *as = peer->as; |
1968 | return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT; | |
1969 | } | |
1970 | } | |
1971 | } | |
93406d87 | 1972 | |
d62a17ae | 1973 | /* Existing peer's AS number change. */ |
1974 | if (((peer->as_type == AS_SPECIFIED) && peer->as != *as) | |
1975 | || (peer->as_type != as_type)) | |
1976 | peer_as_change(peer, *as, as_type); | |
1977 | } else { | |
1978 | if (conf_if) | |
1979 | return BGP_ERR_NO_INTERFACE_CONFIG; | |
1980 | ||
1981 | /* If the peer is not part of our confederation, and its not an | |
1982 | iBGP peer then spoof the source AS */ | |
1983 | if (bgp_config_check(bgp, BGP_CONFIG_CONFEDERATION) | |
1984 | && !bgp_confederation_peers_check(bgp, *as) | |
1985 | && bgp->as != *as) | |
1986 | local_as = bgp->confed_id; | |
1987 | else | |
1988 | local_as = bgp->as; | |
1989 | ||
e84c59af | 1990 | peer_create(su, conf_if, bgp, local_as, *as, as_type, NULL); |
d62a17ae | 1991 | } |
718e3744 | 1992 | |
d62a17ae | 1993 | return 0; |
1994 | } | |
718e3744 | 1995 | |
9790f44f DS |
1996 | static void peer_group2peer_config_copy_af(struct peer_group *group, |
1997 | struct peer *peer, afi_t afi, | |
1998 | safi_t safi) | |
1999 | { | |
2000 | int in = FILTER_IN; | |
2001 | int out = FILTER_OUT; | |
4c391142 | 2002 | uint32_t flags_tmp; |
e7103a96 PM |
2003 | uint32_t pflags_ovrd; |
2004 | uint8_t *pfilter_ovrd; | |
9790f44f | 2005 | struct peer *conf; |
9790f44f DS |
2006 | |
2007 | conf = group->conf; | |
e7103a96 PM |
2008 | pflags_ovrd = peer->af_flags_override[afi][safi]; |
2009 | pfilter_ovrd = &peer->filter_override[afi][safi][in]; | |
9790f44f DS |
2010 | |
2011 | /* peer af_flags apply */ | |
4c391142 PM |
2012 | flags_tmp = conf->af_flags[afi][safi] & ~pflags_ovrd; |
2013 | flags_tmp ^= conf->af_flags_invert[afi][safi] | |
2014 | ^ peer->af_flags_invert[afi][safi]; | |
2015 | flags_tmp &= ~pflags_ovrd; | |
2016 | ||
2017 | UNSET_FLAG(peer->af_flags[afi][safi], ~pflags_ovrd); | |
2018 | SET_FLAG(peer->af_flags[afi][safi], flags_tmp); | |
2019 | SET_FLAG(peer->af_flags_invert[afi][safi], | |
2020 | conf->af_flags_invert[afi][safi]); | |
9790f44f DS |
2021 | |
2022 | /* maximum-prefix */ | |
e7103a96 PM |
2023 | if (!CHECK_FLAG(pflags_ovrd, PEER_FLAG_MAX_PREFIX)) { |
2024 | PEER_ATTR_INHERIT(peer, group, pmax[afi][safi]); | |
2025 | PEER_ATTR_INHERIT(peer, group, pmax_threshold[afi][safi]); | |
2026 | PEER_ATTR_INHERIT(peer, group, pmax_restart[afi][safi]); | |
2027 | } | |
9790f44f DS |
2028 | |
2029 | /* allowas-in */ | |
e7103a96 PM |
2030 | if (!CHECK_FLAG(pflags_ovrd, PEER_FLAG_ALLOWAS_IN)) |
2031 | PEER_ATTR_INHERIT(peer, group, allowas_in[afi][safi]); | |
9790f44f DS |
2032 | |
2033 | /* weight */ | |
e7103a96 PM |
2034 | if (!CHECK_FLAG(pflags_ovrd, PEER_FLAG_WEIGHT)) |
2035 | PEER_ATTR_INHERIT(peer, group, weight[afi][safi]); | |
9790f44f DS |
2036 | |
2037 | /* default-originate route-map */ | |
e7103a96 PM |
2038 | if (!CHECK_FLAG(pflags_ovrd, PEER_FLAG_DEFAULT_ORIGINATE)) { |
2039 | PEER_STR_ATTR_INHERIT(peer, group, default_rmap[afi][safi].name, | |
2040 | MTYPE_ROUTE_MAP_NAME); | |
2041 | PEER_ATTR_INHERIT(peer, group, default_rmap[afi][safi].map); | |
9790f44f DS |
2042 | } |
2043 | ||
2044 | /* inbound filter apply */ | |
e7103a96 PM |
2045 | if (!CHECK_FLAG(pfilter_ovrd[in], PEER_FT_DISTRIBUTE_LIST)) { |
2046 | PEER_STR_ATTR_INHERIT(peer, group, | |
2047 | filter[afi][safi].dlist[in].name, | |
2048 | MTYPE_BGP_FILTER_NAME); | |
2049 | PEER_ATTR_INHERIT(peer, group, | |
2050 | filter[afi][safi].dlist[in].alist); | |
9790f44f DS |
2051 | } |
2052 | ||
e7103a96 PM |
2053 | if (!CHECK_FLAG(pfilter_ovrd[in], PEER_FT_PREFIX_LIST)) { |
2054 | PEER_STR_ATTR_INHERIT(peer, group, | |
2055 | filter[afi][safi].plist[in].name, | |
2056 | MTYPE_BGP_FILTER_NAME); | |
2057 | PEER_ATTR_INHERIT(peer, group, | |
2058 | filter[afi][safi].plist[in].plist); | |
9790f44f DS |
2059 | } |
2060 | ||
e7103a96 PM |
2061 | if (!CHECK_FLAG(pfilter_ovrd[in], PEER_FT_FILTER_LIST)) { |
2062 | PEER_STR_ATTR_INHERIT(peer, group, | |
2063 | filter[afi][safi].aslist[in].name, | |
2064 | MTYPE_BGP_FILTER_NAME); | |
2065 | PEER_ATTR_INHERIT(peer, group, | |
2066 | filter[afi][safi].aslist[in].aslist); | |
9790f44f DS |
2067 | } |
2068 | ||
e7103a96 PM |
2069 | if (!CHECK_FLAG(pfilter_ovrd[RMAP_IN], PEER_FT_ROUTE_MAP)) { |
2070 | PEER_STR_ATTR_INHERIT(peer, group, | |
2071 | filter[afi][safi].map[in].name, | |
2072 | MTYPE_BGP_FILTER_NAME); | |
2073 | PEER_ATTR_INHERIT(peer, group, | |
2074 | filter[afi][safi].map[RMAP_IN].map); | |
9790f44f DS |
2075 | } |
2076 | ||
2077 | /* outbound filter apply */ | |
e7103a96 PM |
2078 | if (!CHECK_FLAG(pfilter_ovrd[out], PEER_FT_DISTRIBUTE_LIST)) { |
2079 | PEER_STR_ATTR_INHERIT(peer, group, | |
2080 | filter[afi][safi].dlist[out].name, | |
2081 | MTYPE_BGP_FILTER_NAME); | |
2082 | PEER_ATTR_INHERIT(peer, group, | |
2083 | filter[afi][safi].dlist[out].alist); | |
9790f44f DS |
2084 | } |
2085 | ||
e7103a96 PM |
2086 | if (!CHECK_FLAG(pfilter_ovrd[out], PEER_FT_PREFIX_LIST)) { |
2087 | PEER_STR_ATTR_INHERIT(peer, group, | |
2088 | filter[afi][safi].plist[out].name, | |
2089 | MTYPE_BGP_FILTER_NAME); | |
2090 | PEER_ATTR_INHERIT(peer, group, | |
2091 | filter[afi][safi].plist[out].plist); | |
9790f44f DS |
2092 | } |
2093 | ||
e7103a96 PM |
2094 | if (!CHECK_FLAG(pfilter_ovrd[out], PEER_FT_FILTER_LIST)) { |
2095 | PEER_STR_ATTR_INHERIT(peer, group, | |
2096 | filter[afi][safi].aslist[out].name, | |
2097 | MTYPE_BGP_FILTER_NAME); | |
2098 | PEER_ATTR_INHERIT(peer, group, | |
2099 | filter[afi][safi].aslist[out].aslist); | |
2100 | } | |
2101 | ||
2102 | if (!CHECK_FLAG(pfilter_ovrd[RMAP_OUT], PEER_FT_ROUTE_MAP)) { | |
2103 | PEER_STR_ATTR_INHERIT(peer, group, | |
2104 | filter[afi][safi].map[RMAP_OUT].name, | |
2105 | MTYPE_BGP_FILTER_NAME); | |
2106 | PEER_ATTR_INHERIT(peer, group, | |
2107 | filter[afi][safi].map[RMAP_OUT].map); | |
2108 | } | |
2109 | ||
2110 | /* nondirectional filter apply */ | |
2111 | if (!CHECK_FLAG(pfilter_ovrd[0], PEER_FT_UNSUPPRESS_MAP)) { | |
2112 | PEER_STR_ATTR_INHERIT(peer, group, filter[afi][safi].usmap.name, | |
2113 | MTYPE_BGP_FILTER_NAME); | |
2114 | PEER_ATTR_INHERIT(peer, group, filter[afi][safi].usmap.map); | |
9790f44f | 2115 | } |
dcc68b5e MS |
2116 | |
2117 | if (peer->addpath_type[afi][safi] == BGP_ADDPATH_NONE) { | |
2118 | peer->addpath_type[afi][safi] = conf->addpath_type[afi][safi]; | |
2119 | bgp_addpath_type_changed(conf->bgp); | |
2120 | } | |
9790f44f DS |
2121 | } |
2122 | ||
2123 | static int peer_activate_af(struct peer *peer, afi_t afi, safi_t safi) | |
d62a17ae | 2124 | { |
2125 | int active; | |
9bf904cc | 2126 | struct peer *other; |
718e3744 | 2127 | |
d62a17ae | 2128 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
e50f7cfd | 2129 | flog_err(EC_BGP_PEER_GROUP, "%s was called for peer-group %s", |
1c50c1c0 | 2130 | __func__, peer->host); |
d62a17ae | 2131 | return 1; |
2132 | } | |
3f9c7369 | 2133 | |
d62a17ae | 2134 | /* Do not activate a peer for both SAFI_UNICAST and SAFI_LABELED_UNICAST |
2135 | */ | |
2136 | if ((safi == SAFI_UNICAST && peer->afc[afi][SAFI_LABELED_UNICAST]) | |
2137 | || (safi == SAFI_LABELED_UNICAST && peer->afc[afi][SAFI_UNICAST])) | |
2138 | return BGP_ERR_PEER_SAFI_CONFLICT; | |
2139 | ||
2140 | /* Nothing to do if we've already activated this peer */ | |
2141 | if (peer->afc[afi][safi]) | |
2142 | return 0; | |
2143 | ||
2144 | if (peer_af_create(peer, afi, safi) == NULL) | |
2145 | return 1; | |
2146 | ||
2147 | active = peer_active(peer); | |
2148 | peer->afc[afi][safi] = 1; | |
2149 | ||
9790f44f | 2150 | if (peer->group) |
a4d82a8a | 2151 | peer_group2peer_config_copy_af(peer->group, peer, afi, safi); |
9790f44f | 2152 | |
d62a17ae | 2153 | if (!active && peer_active(peer)) { |
2154 | bgp_timer_set(peer); | |
2155 | } else { | |
feb17238 | 2156 | if (peer_established(peer)) { |
d62a17ae | 2157 | if (CHECK_FLAG(peer->cap, PEER_CAP_DYNAMIC_RCV)) { |
2158 | peer->afc_adv[afi][safi] = 1; | |
2159 | bgp_capability_send(peer, afi, safi, | |
2160 | CAPABILITY_CODE_MP, | |
2161 | CAPABILITY_ACTION_SET); | |
2162 | if (peer->afc_recv[afi][safi]) { | |
2163 | peer->afc_nego[afi][safi] = 1; | |
2164 | bgp_announce_route(peer, afi, safi); | |
2165 | } | |
2166 | } else { | |
2167 | peer->last_reset = PEER_DOWN_AF_ACTIVATE; | |
2168 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
2169 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
2170 | } | |
2171 | } | |
64c1a9b5 DS |
2172 | if (peer->status == OpenSent || peer->status == OpenConfirm) { |
2173 | peer->last_reset = PEER_DOWN_AF_ACTIVATE; | |
2174 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
2175 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
2176 | } | |
9bf904cc DS |
2177 | /* |
2178 | * If we are turning on a AFI/SAFI locally and we've | |
2179 | * started bringing a peer up, we need to tell | |
2180 | * the other peer to restart because we might loose | |
2181 | * configuration here because when the doppelganger | |
2182 | * gets to a established state due to how | |
2183 | * we resolve we could just overwrite the afi/safi | |
2184 | * activation. | |
2185 | */ | |
2186 | other = peer->doppelganger; | |
2187 | if (other | |
2188 | && (other->status == OpenSent | |
2189 | || other->status == OpenConfirm)) { | |
2190 | other->last_reset = PEER_DOWN_AF_ACTIVATE; | |
2191 | bgp_notify_send(other, BGP_NOTIFY_CEASE, | |
2192 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
2193 | } | |
d62a17ae | 2194 | } |
04b6bdc0 | 2195 | |
d62a17ae | 2196 | return 0; |
2197 | } | |
9e08021c | 2198 | |
d62a17ae | 2199 | /* Activate the peer or peer group for specified AFI and SAFI. */ |
2200 | int peer_activate(struct peer *peer, afi_t afi, safi_t safi) | |
2201 | { | |
2202 | int ret = 0; | |
2203 | struct peer_group *group; | |
2204 | struct listnode *node, *nnode; | |
2205 | struct peer *tmp_peer; | |
318cac96 | 2206 | struct bgp *bgp; |
d62a17ae | 2207 | |
2208 | /* Nothing to do if we've already activated this peer */ | |
2209 | if (peer->afc[afi][safi]) | |
2210 | return ret; | |
2211 | ||
318cac96 DW |
2212 | bgp = peer->bgp; |
2213 | ||
d62a17ae | 2214 | /* This is a peer-group so activate all of the members of the |
2215 | * peer-group as well */ | |
2216 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
2217 | ||
2218 | /* Do not activate a peer for both SAFI_UNICAST and | |
2219 | * SAFI_LABELED_UNICAST */ | |
2220 | if ((safi == SAFI_UNICAST | |
2221 | && peer->afc[afi][SAFI_LABELED_UNICAST]) | |
2222 | || (safi == SAFI_LABELED_UNICAST | |
2223 | && peer->afc[afi][SAFI_UNICAST])) | |
2224 | return BGP_ERR_PEER_SAFI_CONFLICT; | |
2225 | ||
2226 | peer->afc[afi][safi] = 1; | |
2227 | group = peer->group; | |
2228 | ||
2229 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, tmp_peer)) { | |
9790f44f | 2230 | ret |= peer_activate_af(tmp_peer, afi, safi); |
d62a17ae | 2231 | } |
2232 | } else { | |
9790f44f | 2233 | ret |= peer_activate_af(peer, afi, safi); |
d62a17ae | 2234 | } |
718e3744 | 2235 | |
a4d82a8a PZ |
2236 | /* If this is the first peer to be activated for this |
2237 | * afi/labeled-unicast recalc bestpaths to trigger label allocation */ | |
0f3ac819 | 2238 | if (ret != BGP_ERR_PEER_SAFI_CONFLICT && safi == SAFI_LABELED_UNICAST |
a4d82a8a | 2239 | && !bgp->allocate_mpls_labels[afi][SAFI_UNICAST]) { |
318cac96 DW |
2240 | |
2241 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4cb5e18b | 2242 | zlog_debug( |
a4d82a8a | 2243 | "peer(s) are now active for labeled-unicast, allocate MPLS labels"); |
318cac96 DW |
2244 | |
2245 | bgp->allocate_mpls_labels[afi][SAFI_UNICAST] = 1; | |
2246 | bgp_recalculate_afi_safi_bestpaths(bgp, afi, SAFI_UNICAST); | |
2247 | } | |
2248 | ||
b98f7728 PG |
2249 | if (safi == SAFI_FLOWSPEC) { |
2250 | /* connect to table manager */ | |
6818e7e5 | 2251 | bgp_zebra_init_tm_connect(bgp); |
b98f7728 | 2252 | } |
d62a17ae | 2253 | return ret; |
718e3744 | 2254 | } |
6b0655a2 | 2255 | |
3dc339cd DA |
2256 | static bool non_peergroup_deactivate_af(struct peer *peer, afi_t afi, |
2257 | safi_t safi) | |
718e3744 | 2258 | { |
d62a17ae | 2259 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
e50f7cfd | 2260 | flog_err(EC_BGP_PEER_GROUP, "%s was called for peer-group %s", |
1c50c1c0 | 2261 | __func__, peer->host); |
3dc339cd | 2262 | return true; |
d62a17ae | 2263 | } |
718e3744 | 2264 | |
d62a17ae | 2265 | /* Nothing to do if we've already deactivated this peer */ |
2266 | if (!peer->afc[afi][safi]) | |
3dc339cd | 2267 | return false; |
718e3744 | 2268 | |
d62a17ae | 2269 | /* De-activate the address family configuration. */ |
2270 | peer->afc[afi][safi] = 0; | |
718e3744 | 2271 | |
d62a17ae | 2272 | if (peer_af_delete(peer, afi, safi) != 0) { |
e50f7cfd | 2273 | flog_err(EC_BGP_PEER_DELETE, |
601837df DS |
2274 | "couldn't delete af structure for peer %s(%s, %s)", |
2275 | peer->host, afi2str(afi), safi2str(safi)); | |
3dc339cd | 2276 | return true; |
d62a17ae | 2277 | } |
718e3744 | 2278 | |
feb17238 | 2279 | if (peer_established(peer)) { |
d62a17ae | 2280 | if (CHECK_FLAG(peer->cap, PEER_CAP_DYNAMIC_RCV)) { |
2281 | peer->afc_adv[afi][safi] = 0; | |
2282 | peer->afc_nego[afi][safi] = 0; | |
2283 | ||
2284 | if (peer_active_nego(peer)) { | |
2285 | bgp_capability_send(peer, afi, safi, | |
2286 | CAPABILITY_CODE_MP, | |
2287 | CAPABILITY_ACTION_UNSET); | |
2288 | bgp_clear_route(peer, afi, safi); | |
2289 | peer->pcount[afi][safi] = 0; | |
2290 | } else { | |
2291 | peer->last_reset = PEER_DOWN_NEIGHBOR_DELETE; | |
2292 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
2293 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
2294 | } | |
2295 | } else { | |
2296 | peer->last_reset = PEER_DOWN_NEIGHBOR_DELETE; | |
2297 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
2298 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
2299 | } | |
2300 | } | |
718e3744 | 2301 | |
3dc339cd | 2302 | return false; |
d62a17ae | 2303 | } |
718e3744 | 2304 | |
d62a17ae | 2305 | int peer_deactivate(struct peer *peer, afi_t afi, safi_t safi) |
718e3744 | 2306 | { |
d62a17ae | 2307 | int ret = 0; |
2308 | struct peer_group *group; | |
2309 | struct peer *tmp_peer; | |
2310 | struct listnode *node, *nnode; | |
318cac96 | 2311 | struct bgp *bgp; |
718e3744 | 2312 | |
d62a17ae | 2313 | /* Nothing to do if we've already de-activated this peer */ |
2314 | if (!peer->afc[afi][safi]) | |
2315 | return ret; | |
718e3744 | 2316 | |
d62a17ae | 2317 | /* This is a peer-group so de-activate all of the members of the |
2318 | * peer-group as well */ | |
2319 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
2320 | peer->afc[afi][safi] = 0; | |
2321 | group = peer->group; | |
718e3744 | 2322 | |
d62a17ae | 2323 | if (peer_af_delete(peer, afi, safi) != 0) { |
601837df DS |
2324 | flog_err( |
2325 | EC_BGP_PEER_DELETE, | |
2326 | "couldn't delete af structure for peer %s(%s, %s)", | |
2327 | peer->host, afi2str(afi), safi2str(safi)); | |
d62a17ae | 2328 | } |
0299c004 | 2329 | |
d62a17ae | 2330 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, tmp_peer)) { |
2331 | ret |= non_peergroup_deactivate_af(tmp_peer, afi, safi); | |
2332 | } | |
2333 | } else { | |
2334 | ret |= non_peergroup_deactivate_af(peer, afi, safi); | |
2335 | } | |
718e3744 | 2336 | |
318cac96 DW |
2337 | bgp = peer->bgp; |
2338 | ||
a4d82a8a PZ |
2339 | /* If this is the last peer to be deactivated for this |
2340 | * afi/labeled-unicast recalc bestpaths to trigger label deallocation */ | |
2341 | if (safi == SAFI_LABELED_UNICAST | |
2342 | && bgp->allocate_mpls_labels[afi][SAFI_UNICAST] | |
2343 | && !bgp_afi_safi_peer_exists(bgp, afi, safi)) { | |
318cac96 DW |
2344 | |
2345 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4cb5e18b | 2346 | zlog_debug( |
a4d82a8a | 2347 | "peer(s) are no longer active for labeled-unicast, deallocate MPLS labels"); |
318cac96 DW |
2348 | |
2349 | bgp->allocate_mpls_labels[afi][SAFI_UNICAST] = 0; | |
2350 | bgp_recalculate_afi_safi_bestpaths(bgp, afi, SAFI_UNICAST); | |
2351 | } | |
d62a17ae | 2352 | return ret; |
2353 | } | |
718e3744 | 2354 | |
d7b3cda6 | 2355 | void peer_nsf_stop(struct peer *peer) |
718e3744 | 2356 | { |
d62a17ae | 2357 | afi_t afi; |
2358 | safi_t safi; | |
718e3744 | 2359 | |
d62a17ae | 2360 | UNSET_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT); |
2361 | UNSET_FLAG(peer->sflags, PEER_STATUS_NSF_MODE); | |
718e3744 | 2362 | |
d62a17ae | 2363 | for (afi = AFI_IP; afi < AFI_MAX; afi++) |
a08ca0a7 | 2364 | for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++) |
d62a17ae | 2365 | peer->nsf[afi][safi] = 0; |
2366 | ||
2367 | if (peer->t_gr_restart) { | |
2368 | BGP_TIMER_OFF(peer->t_gr_restart); | |
2369 | if (bgp_debug_neighbor_events(peer)) | |
2370 | zlog_debug("%s graceful restart timer stopped", | |
2371 | peer->host); | |
1ff9a340 | 2372 | } |
d62a17ae | 2373 | if (peer->t_gr_stale) { |
2374 | BGP_TIMER_OFF(peer->t_gr_stale); | |
2375 | if (bgp_debug_neighbor_events(peer)) | |
2376 | zlog_debug( | |
2377 | "%s graceful restart stalepath timer stopped", | |
2378 | peer->host); | |
2379 | } | |
2380 | bgp_clear_route_all(peer); | |
2381 | } | |
718e3744 | 2382 | |
d62a17ae | 2383 | /* Delete peer from confguration. |
2384 | * | |
2385 | * The peer is moved to a dead-end "Deleted" neighbour-state, to allow | |
2386 | * it to "cool off" and refcounts to hit 0, at which state it is freed. | |
2387 | * | |
2388 | * This function /should/ take care to be idempotent, to guard against | |
2389 | * it being called multiple times through stray events that come in | |
2390 | * that happen to result in this function being called again. That | |
2391 | * said, getting here for a "Deleted" peer is a bug in the neighbour | |
2392 | * FSM. | |
2393 | */ | |
2394 | int peer_delete(struct peer *peer) | |
2395 | { | |
2396 | int i; | |
2397 | afi_t afi; | |
2398 | safi_t safi; | |
2399 | struct bgp *bgp; | |
2400 | struct bgp_filter *filter; | |
2401 | struct listnode *pn; | |
2402 | int accept_peer; | |
f14e6fdb | 2403 | |
d62a17ae | 2404 | assert(peer->status != Deleted); |
718e3744 | 2405 | |
d62a17ae | 2406 | bgp = peer->bgp; |
2407 | accept_peer = CHECK_FLAG(peer->sflags, PEER_STATUS_ACCEPT_PEER); | |
080b97f2 | 2408 | |
46aeabed LS |
2409 | bgp_soft_reconfig_table_task_cancel(bgp, NULL, peer); |
2410 | ||
0a6469e5 | 2411 | bgp_keepalives_off(peer); |
424ab01d QY |
2412 | bgp_reads_off(peer); |
2413 | bgp_writes_off(peer); | |
2414 | assert(!CHECK_FLAG(peer->thread_flags, PEER_THREAD_WRITES_ON)); | |
2415 | assert(!CHECK_FLAG(peer->thread_flags, PEER_THREAD_READS_ON)); | |
0a6469e5 | 2416 | assert(!CHECK_FLAG(peer->thread_flags, PEER_THREAD_KEEPALIVES_ON)); |
424ab01d | 2417 | |
d62a17ae | 2418 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT)) |
2419 | peer_nsf_stop(peer); | |
718e3744 | 2420 | |
d62a17ae | 2421 | SET_FLAG(peer->flags, PEER_FLAG_DELETE); |
718e3744 | 2422 | |
21bfce98 RZ |
2423 | /* Remove BFD settings. */ |
2424 | if (peer->bfd_config) | |
2425 | bgp_peer_remove_bfd_config(peer); | |
e8ba5293 | 2426 | |
40ec3340 DS |
2427 | /* Delete peer route flap dampening configuration. This needs to happen |
2428 | * before removing the peer from peer groups. | |
2429 | */ | |
2430 | FOREACH_AFI_SAFI (afi, safi) | |
2431 | if (peer_af_flag_check(peer, afi, safi, | |
2432 | PEER_FLAG_CONFIG_DAMPENING)) | |
2433 | bgp_peer_damp_disable(peer, afi, safi); | |
2434 | ||
d62a17ae | 2435 | /* If this peer belongs to peer group, clear up the |
2436 | relationship. */ | |
2437 | if (peer->group) { | |
2438 | if (peer_dynamic_neighbor(peer)) | |
2439 | peer_drop_dynamic_neighbor(peer); | |
718e3744 | 2440 | |
d62a17ae | 2441 | if ((pn = listnode_lookup(peer->group->peer, peer))) { |
2442 | peer = peer_unlock( | |
2443 | peer); /* group->peer list reference */ | |
2444 | list_delete_node(peer->group->peer, pn); | |
2445 | } | |
2446 | peer->group = NULL; | |
2447 | } | |
718e3744 | 2448 | |
d62a17ae | 2449 | /* Withdraw all information from routing table. We can not use |
2450 | * BGP_EVENT_ADD (peer, BGP_Stop) at here. Because the event is | |
2451 | * executed after peer structure is deleted. | |
2452 | */ | |
2453 | peer->last_reset = PEER_DOWN_NEIGHBOR_DELETE; | |
2454 | bgp_stop(peer); | |
2455 | UNSET_FLAG(peer->flags, PEER_FLAG_DELETE); | |
2456 | ||
2457 | if (peer->doppelganger) { | |
2458 | peer->doppelganger->doppelganger = NULL; | |
2459 | peer->doppelganger = NULL; | |
2460 | } | |
718e3744 | 2461 | |
d62a17ae | 2462 | UNSET_FLAG(peer->sflags, PEER_STATUS_ACCEPT_PEER); |
2463 | bgp_fsm_change_status(peer, Deleted); | |
718e3744 | 2464 | |
d62a17ae | 2465 | /* Remove from NHT */ |
2466 | if (CHECK_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE)) | |
2467 | bgp_unlink_nexthop_by_peer(peer); | |
1ff9a340 | 2468 | |
d62a17ae | 2469 | /* Password configuration */ |
a14810f4 | 2470 | if (CHECK_FLAG(peer->flags, PEER_FLAG_PASSWORD)) { |
d62a17ae | 2471 | XFREE(MTYPE_PEER_PASSWORD, peer->password); |
d62a17ae | 2472 | if (!accept_peer && !BGP_PEER_SU_UNSPEC(peer) |
2734ff6b PR |
2473 | && !CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) |
2474 | && !CHECK_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR)) | |
d62a17ae | 2475 | bgp_md5_unset(peer); |
1ff9a340 | 2476 | } |
718e3744 | 2477 | |
d62a17ae | 2478 | bgp_timer_set(peer); /* stops all timers for Deleted */ |
718e3744 | 2479 | |
d62a17ae | 2480 | /* Delete from all peer list. */ |
2481 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) | |
2482 | && (pn = listnode_lookup(bgp->peer, peer))) { | |
2483 | peer_unlock(peer); /* bgp peer list reference */ | |
2484 | list_delete_node(bgp->peer, pn); | |
2485 | hash_release(bgp->peerhash, peer); | |
2486 | } | |
718e3744 | 2487 | |
d62a17ae | 2488 | /* Buffers. */ |
2489 | if (peer->ibuf) { | |
424ab01d | 2490 | stream_fifo_free(peer->ibuf); |
d62a17ae | 2491 | peer->ibuf = NULL; |
2492 | } | |
f14e6fdb | 2493 | |
d62a17ae | 2494 | if (peer->obuf) { |
2495 | stream_fifo_free(peer->obuf); | |
2496 | peer->obuf = NULL; | |
2497 | } | |
f14e6fdb | 2498 | |
424ab01d | 2499 | if (peer->ibuf_work) { |
74ffbfe6 | 2500 | ringbuf_del(peer->ibuf_work); |
424ab01d QY |
2501 | peer->ibuf_work = NULL; |
2502 | } | |
2503 | ||
2504 | if (peer->obuf_work) { | |
2505 | stream_free(peer->obuf_work); | |
2506 | peer->obuf_work = NULL; | |
d62a17ae | 2507 | } |
f14e6fdb | 2508 | |
d62a17ae | 2509 | if (peer->scratch) { |
2510 | stream_free(peer->scratch); | |
2511 | peer->scratch = NULL; | |
2512 | } | |
f14e6fdb | 2513 | |
d62a17ae | 2514 | /* Local and remote addresses. */ |
2515 | if (peer->su_local) { | |
2516 | sockunion_free(peer->su_local); | |
2517 | peer->su_local = NULL; | |
2518 | } | |
f14e6fdb | 2519 | |
d62a17ae | 2520 | if (peer->su_remote) { |
2521 | sockunion_free(peer->su_remote); | |
2522 | peer->su_remote = NULL; | |
2523 | } | |
f14e6fdb | 2524 | |
d62a17ae | 2525 | /* Free filter related memory. */ |
05c7a1cc QY |
2526 | FOREACH_AFI_SAFI (afi, safi) { |
2527 | filter = &peer->filter[afi][safi]; | |
d62a17ae | 2528 | |
05c7a1cc | 2529 | for (i = FILTER_IN; i < FILTER_MAX; i++) { |
e1b36e13 QY |
2530 | XFREE(MTYPE_BGP_FILTER_NAME, filter->dlist[i].name); |
2531 | XFREE(MTYPE_BGP_FILTER_NAME, filter->plist[i].name); | |
2532 | XFREE(MTYPE_BGP_FILTER_NAME, filter->aslist[i].name); | |
05c7a1cc | 2533 | } |
d62a17ae | 2534 | |
05c7a1cc | 2535 | for (i = RMAP_IN; i < RMAP_MAX; i++) { |
e1b36e13 | 2536 | XFREE(MTYPE_BGP_FILTER_NAME, filter->map[i].name); |
05c7a1cc QY |
2537 | } |
2538 | ||
e1b36e13 QY |
2539 | XFREE(MTYPE_BGP_FILTER_NAME, filter->usmap.name); |
2540 | XFREE(MTYPE_ROUTE_MAP_NAME, peer->default_rmap[afi][safi].name); | |
05c7a1cc QY |
2541 | } |
2542 | ||
a2addae8 RW |
2543 | FOREACH_AFI_SAFI (afi, safi) |
2544 | peer_af_delete(peer, afi, safi); | |
f14e6fdb | 2545 | |
e1b36e13 QY |
2546 | XFREE(MTYPE_BGP_PEER_HOST, peer->hostname); |
2547 | XFREE(MTYPE_BGP_PEER_HOST, peer->domainname); | |
f14e6fdb | 2548 | |
d62a17ae | 2549 | peer_unlock(peer); /* initial reference */ |
f14e6fdb | 2550 | |
d62a17ae | 2551 | return 0; |
fe7d2a48 DS |
2552 | } |
2553 | ||
d62a17ae | 2554 | static int peer_group_cmp(struct peer_group *g1, struct peer_group *g2) |
2555 | { | |
2556 | return strcmp(g1->name, g2->name); | |
6aeb9e78 DS |
2557 | } |
2558 | ||
d62a17ae | 2559 | /* Peer group cofiguration. */ |
2560 | static struct peer_group *peer_group_new(void) | |
718e3744 | 2561 | { |
9f5dc319 | 2562 | return XCALLOC(MTYPE_PEER_GROUP, sizeof(struct peer_group)); |
718e3744 | 2563 | } |
2564 | ||
d62a17ae | 2565 | static void peer_group_free(struct peer_group *group) |
718e3744 | 2566 | { |
d62a17ae | 2567 | XFREE(MTYPE_PEER_GROUP, group); |
718e3744 | 2568 | } |
2569 | ||
d62a17ae | 2570 | struct peer_group *peer_group_lookup(struct bgp *bgp, const char *name) |
718e3744 | 2571 | { |
d62a17ae | 2572 | struct peer_group *group; |
2573 | struct listnode *node, *nnode; | |
2574 | ||
2575 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) { | |
2576 | if (strcmp(group->name, name) == 0) | |
2577 | return group; | |
2578 | } | |
2579 | return NULL; | |
2580 | } | |
2581 | ||
2582 | struct peer_group *peer_group_get(struct bgp *bgp, const char *name) | |
2583 | { | |
2584 | struct peer_group *group; | |
2585 | afi_t afi; | |
2586 | ||
2587 | group = peer_group_lookup(bgp, name); | |
2588 | if (group) | |
2589 | return group; | |
2590 | ||
2591 | group = peer_group_new(); | |
2592 | group->bgp = bgp; | |
0a22ddfb | 2593 | XFREE(MTYPE_PEER_GROUP_HOST, group->name); |
d62a17ae | 2594 | group->name = XSTRDUP(MTYPE_PEER_GROUP_HOST, name); |
2595 | group->peer = list_new(); | |
2596 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
2597 | group->listen_range[afi] = list_new(); | |
2598 | group->conf = peer_new(bgp); | |
b16bcbba | 2599 | if (bgp->default_af[AFI_IP][SAFI_UNICAST]) |
d62a17ae | 2600 | group->conf->afc[AFI_IP][SAFI_UNICAST] = 1; |
b16bcbba | 2601 | if (bgp->default_af[AFI_IP6][SAFI_UNICAST]) |
e84c59af | 2602 | group->conf->afc[AFI_IP6][SAFI_UNICAST] = 1; |
0a22ddfb | 2603 | XFREE(MTYPE_BGP_PEER_HOST, group->conf->host); |
d62a17ae | 2604 | group->conf->host = XSTRDUP(MTYPE_BGP_PEER_HOST, name); |
2605 | group->conf->group = group; | |
2606 | group->conf->as = 0; | |
a0903cd2 | 2607 | group->conf->ttl = BGP_DEFAULT_TTL; |
e2521429 | 2608 | group->conf->gtsm_hops = BGP_GTSM_HOPS_DISABLED; |
d62a17ae | 2609 | group->conf->v_routeadv = BGP_DEFAULT_EBGP_ROUTEADV; |
d62a17ae | 2610 | SET_FLAG(group->conf->sflags, PEER_STATUS_GROUP); |
2611 | listnode_add_sort(bgp->group, group); | |
718e3744 | 2612 | |
d62a17ae | 2613 | return group; |
718e3744 | 2614 | } |
2615 | ||
d62a17ae | 2616 | static void peer_group2peer_config_copy(struct peer_group *group, |
2617 | struct peer *peer) | |
ad4cbda1 | 2618 | { |
4c391142 | 2619 | uint32_t flags_tmp; |
d62a17ae | 2620 | struct peer *conf; |
ad4cbda1 | 2621 | |
d62a17ae | 2622 | conf = group->conf; |
ad4cbda1 | 2623 | |
d62a17ae | 2624 | /* remote-as */ |
2625 | if (conf->as) | |
2626 | peer->as = conf->as; | |
718e3744 | 2627 | |
a14810f4 PM |
2628 | /* local-as */ |
2629 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_LOCAL_AS)) | |
d62a17ae | 2630 | peer->change_local_as = conf->change_local_as; |
1758dbaa | 2631 | |
a0903cd2 DA |
2632 | /* If peer-group has configured TTL then override it */ |
2633 | if (conf->ttl != BGP_DEFAULT_TTL) | |
2634 | peer->ttl = conf->ttl; | |
518f0eb1 | 2635 | |
d62a17ae | 2636 | /* GTSM hops */ |
2637 | peer->gtsm_hops = conf->gtsm_hops; | |
ad12dde6 | 2638 | |
4c391142 PM |
2639 | /* peer flags apply */ |
2640 | flags_tmp = conf->flags & ~peer->flags_override; | |
2641 | flags_tmp ^= conf->flags_invert ^ peer->flags_invert; | |
2642 | flags_tmp &= ~peer->flags_override; | |
2643 | ||
2644 | UNSET_FLAG(peer->flags, ~peer->flags_override); | |
2645 | SET_FLAG(peer->flags, flags_tmp); | |
2646 | SET_FLAG(peer->flags_invert, conf->flags_invert); | |
ad4cbda1 | 2647 | |
d62a17ae | 2648 | /* peer timers apply */ |
b90a8e13 PM |
2649 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_TIMER)) { |
2650 | PEER_ATTR_INHERIT(peer, group, holdtime); | |
2651 | PEER_ATTR_INHERIT(peer, group, keepalive); | |
2652 | } | |
6aeb9e78 | 2653 | |
b90a8e13 PM |
2654 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_TIMER_CONNECT)) { |
2655 | PEER_ATTR_INHERIT(peer, group, connect); | |
2656 | if (CHECK_FLAG(conf->flags, PEER_FLAG_TIMER_CONNECT)) | |
2657 | peer->v_connect = conf->connect; | |
2658 | else | |
5d5393b9 | 2659 | peer->v_connect = peer->bgp->default_connect_retry; |
b90a8e13 PM |
2660 | } |
2661 | ||
6c537a18 DS |
2662 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_TIMER_DELAYOPEN)) { |
2663 | PEER_ATTR_INHERIT(peer, group, delayopen); | |
2664 | if (CHECK_FLAG(conf->flags, PEER_FLAG_TIMER_DELAYOPEN)) | |
2665 | peer->v_delayopen = conf->delayopen; | |
2666 | else | |
2667 | peer->v_delayopen = peer->bgp->default_delayopen; | |
2668 | } | |
2669 | ||
b90a8e13 PM |
2670 | /* advertisement-interval apply */ |
2671 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_ROUTEADV)) { | |
2672 | PEER_ATTR_INHERIT(peer, group, routeadv); | |
2673 | if (CHECK_FLAG(conf->flags, PEER_FLAG_ROUTEADV)) | |
2674 | peer->v_routeadv = conf->routeadv; | |
2675 | else | |
2676 | peer->v_routeadv = (peer_sort(peer) == BGP_PEER_IBGP) | |
2677 | ? BGP_DEFAULT_IBGP_ROUTEADV | |
2678 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
2679 | } | |
718e3744 | 2680 | |
b3a3290e DS |
2681 | /* capability extended-nexthop apply */ |
2682 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_CAPABILITY_ENHE)) | |
2683 | if (CHECK_FLAG(conf->flags, PEER_FLAG_CAPABILITY_ENHE)) | |
2684 | SET_FLAG(peer->flags, PEER_FLAG_CAPABILITY_ENHE); | |
2685 | ||
d62a17ae | 2686 | /* password apply */ |
a14810f4 PM |
2687 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_PASSWORD)) |
2688 | PEER_STR_ATTR_INHERIT(peer, group, password, | |
2689 | MTYPE_PEER_PASSWORD); | |
718e3744 | 2690 | |
d62a17ae | 2691 | if (!BGP_PEER_SU_UNSPEC(peer)) |
2692 | bgp_md5_set(peer); | |
d4a7a753 | 2693 | |
d62a17ae | 2694 | /* update-source apply */ |
a14810f4 PM |
2695 | if (!CHECK_FLAG(peer->flags_override, PEER_FLAG_UPDATE_SOURCE)) { |
2696 | if (conf->update_source) { | |
d62a17ae | 2697 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer->update_if); |
a14810f4 PM |
2698 | PEER_SU_ATTR_INHERIT(peer, group, update_source); |
2699 | } else if (conf->update_if) { | |
d62a17ae | 2700 | sockunion_free(peer->update_source); |
a14810f4 PM |
2701 | PEER_STR_ATTR_INHERIT(peer, group, update_if, |
2702 | MTYPE_PEER_UPDATE_SOURCE); | |
d62a17ae | 2703 | } |
d62a17ae | 2704 | } |
cd92e548 | 2705 | |
0c0b85b5 NT |
2706 | /* Update GR flags for the peer. */ |
2707 | bgp_peer_gr_flags_update(peer); | |
2708 | ||
21bfce98 RZ |
2709 | /* Apply BFD settings from group to peer if it exists. */ |
2710 | if (conf->bfd_config) { | |
2711 | bgp_peer_configure_bfd(peer, false); | |
2712 | bgp_peer_config_apply(peer, group); | |
2713 | } | |
ad4cbda1 | 2714 | } |
718e3744 | 2715 | |
d62a17ae | 2716 | /* Peer group's remote AS configuration. */ |
2717 | int peer_group_remote_as(struct bgp *bgp, const char *group_name, as_t *as, | |
2718 | int as_type) | |
f14e6fdb | 2719 | { |
d62a17ae | 2720 | struct peer_group *group; |
2721 | struct peer *peer; | |
2722 | struct listnode *node, *nnode; | |
f14e6fdb | 2723 | |
d62a17ae | 2724 | group = peer_group_lookup(bgp, group_name); |
2725 | if (!group) | |
2726 | return -1; | |
f14e6fdb | 2727 | |
d62a17ae | 2728 | if ((as_type == group->conf->as_type) && (group->conf->as == *as)) |
2729 | return 0; | |
f14e6fdb | 2730 | |
f14e6fdb | 2731 | |
d62a17ae | 2732 | /* When we setup peer-group AS number all peer group member's AS |
2733 | number must be updated to same number. */ | |
2734 | peer_as_change(group->conf, *as, as_type); | |
f14e6fdb | 2735 | |
d62a17ae | 2736 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { |
2737 | if (((peer->as_type == AS_SPECIFIED) && peer->as != *as) | |
2738 | || (peer->as_type != as_type)) | |
2739 | peer_as_change(peer, *as, as_type); | |
2740 | } | |
f14e6fdb | 2741 | |
d62a17ae | 2742 | return 0; |
f14e6fdb DS |
2743 | } |
2744 | ||
3dc339cd | 2745 | void peer_notify_unconfig(struct peer *peer) |
4e2786df DA |
2746 | { |
2747 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
2748 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
2749 | BGP_NOTIFY_CEASE_PEER_UNCONFIG); | |
4e2786df DA |
2750 | } |
2751 | ||
3dc339cd | 2752 | void peer_group_notify_unconfig(struct peer_group *group) |
4e2786df DA |
2753 | { |
2754 | struct peer *peer, *other; | |
2755 | struct listnode *node, *nnode; | |
2756 | ||
2757 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
2758 | other = peer->doppelganger; | |
2759 | if (other && other->status != Deleted) { | |
2760 | other->group = NULL; | |
2761 | peer_notify_unconfig(other); | |
2762 | } else | |
2763 | peer_notify_unconfig(peer); | |
2764 | } | |
4e2786df DA |
2765 | } |
2766 | ||
d62a17ae | 2767 | int peer_group_delete(struct peer_group *group) |
f14e6fdb | 2768 | { |
d62a17ae | 2769 | struct bgp *bgp; |
2770 | struct peer *peer; | |
2771 | struct prefix *prefix; | |
2772 | struct peer *other; | |
2773 | struct listnode *node, *nnode; | |
2774 | afi_t afi; | |
f14e6fdb | 2775 | |
d62a17ae | 2776 | bgp = group->bgp; |
f14e6fdb | 2777 | |
d62a17ae | 2778 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { |
2779 | other = peer->doppelganger; | |
b3a3290e DS |
2780 | |
2781 | if (CHECK_FLAG(peer->flags, PEER_FLAG_CAPABILITY_ENHE)) | |
2782 | bgp_zebra_terminate_radv(bgp, peer); | |
2783 | ||
d62a17ae | 2784 | peer_delete(peer); |
2785 | if (other && other->status != Deleted) { | |
2786 | other->group = NULL; | |
2787 | peer_delete(other); | |
2788 | } | |
2789 | } | |
6a154c88 | 2790 | list_delete(&group->peer); |
f14e6fdb | 2791 | |
d62a17ae | 2792 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { |
2793 | for (ALL_LIST_ELEMENTS(group->listen_range[afi], node, nnode, | |
2794 | prefix)) { | |
63265b5c | 2795 | prefix_free(&prefix); |
d62a17ae | 2796 | } |
6a154c88 | 2797 | list_delete(&group->listen_range[afi]); |
d62a17ae | 2798 | } |
f14e6fdb | 2799 | |
d62a17ae | 2800 | XFREE(MTYPE_PEER_GROUP_HOST, group->name); |
2801 | group->name = NULL; | |
0299c004 | 2802 | |
21bfce98 RZ |
2803 | if (group->conf->bfd_config) |
2804 | bgp_peer_remove_bfd_config(group->conf); | |
f14e6fdb | 2805 | |
d62a17ae | 2806 | group->conf->group = NULL; |
2807 | peer_delete(group->conf); | |
f14e6fdb | 2808 | |
d62a17ae | 2809 | /* Delete from all peer_group list. */ |
2810 | listnode_delete(bgp->group, group); | |
f14e6fdb | 2811 | |
d62a17ae | 2812 | peer_group_free(group); |
f14e6fdb | 2813 | |
d62a17ae | 2814 | return 0; |
2815 | } | |
f14e6fdb | 2816 | |
d62a17ae | 2817 | int peer_group_remote_as_delete(struct peer_group *group) |
2818 | { | |
2819 | struct peer *peer, *other; | |
2820 | struct listnode *node, *nnode; | |
f14e6fdb | 2821 | |
d62a17ae | 2822 | if ((group->conf->as_type == AS_UNSPECIFIED) |
2823 | || ((!group->conf->as) && (group->conf->as_type == AS_SPECIFIED))) | |
2824 | return 0; | |
f14e6fdb | 2825 | |
d62a17ae | 2826 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { |
2827 | other = peer->doppelganger; | |
f14e6fdb | 2828 | |
b3a3290e DS |
2829 | if (CHECK_FLAG(peer->flags, PEER_FLAG_CAPABILITY_ENHE)) |
2830 | bgp_zebra_terminate_radv(peer->bgp, peer); | |
2831 | ||
d62a17ae | 2832 | peer_delete(peer); |
f14e6fdb | 2833 | |
d62a17ae | 2834 | if (other && other->status != Deleted) { |
2835 | other->group = NULL; | |
2836 | peer_delete(other); | |
2837 | } | |
2838 | } | |
2839 | list_delete_all_node(group->peer); | |
f14e6fdb | 2840 | |
d62a17ae | 2841 | group->conf->as = 0; |
2842 | group->conf->as_type = AS_UNSPECIFIED; | |
f14e6fdb | 2843 | |
d62a17ae | 2844 | return 0; |
f14e6fdb | 2845 | } |
d62a17ae | 2846 | |
2847 | int peer_group_listen_range_add(struct peer_group *group, struct prefix *range) | |
f14e6fdb | 2848 | { |
d62a17ae | 2849 | struct prefix *prefix; |
2850 | struct listnode *node, *nnode; | |
2851 | afi_t afi; | |
f14e6fdb | 2852 | |
d62a17ae | 2853 | afi = family2afi(range->family); |
f14e6fdb | 2854 | |
d62a17ae | 2855 | /* Group needs remote AS configured. */ |
2856 | if (group->conf->as_type == AS_UNSPECIFIED) | |
2857 | return BGP_ERR_PEER_GROUP_NO_REMOTE_AS; | |
718e3744 | 2858 | |
d62a17ae | 2859 | /* Ensure no duplicates. Currently we don't care about overlaps. */ |
2860 | for (ALL_LIST_ELEMENTS(group->listen_range[afi], node, nnode, prefix)) { | |
2861 | if (prefix_same(range, prefix)) | |
2862 | return 0; | |
2863 | } | |
2864 | ||
2865 | prefix = prefix_new(); | |
2866 | prefix_copy(prefix, range); | |
2867 | listnode_add(group->listen_range[afi], prefix); | |
9e7d9a61 QY |
2868 | |
2869 | /* Update passwords for new ranges */ | |
2870 | if (group->conf->password) | |
a4faae3a | 2871 | bgp_md5_set_prefix(group->bgp, prefix, group->conf->password); |
9e7d9a61 | 2872 | |
d62a17ae | 2873 | return 0; |
718e3744 | 2874 | } |
6b0655a2 | 2875 | |
d62a17ae | 2876 | int peer_group_listen_range_del(struct peer_group *group, struct prefix *range) |
718e3744 | 2877 | { |
d62a17ae | 2878 | struct prefix *prefix, prefix2; |
2879 | struct listnode *node, *nnode; | |
2880 | struct peer *peer; | |
2881 | afi_t afi; | |
718e3744 | 2882 | |
d62a17ae | 2883 | afi = family2afi(range->family); |
1ff9a340 | 2884 | |
d62a17ae | 2885 | /* Identify the listen range. */ |
2886 | for (ALL_LIST_ELEMENTS(group->listen_range[afi], node, nnode, prefix)) { | |
2887 | if (prefix_same(range, prefix)) | |
2888 | break; | |
1ff9a340 | 2889 | } |
718e3744 | 2890 | |
d62a17ae | 2891 | if (!prefix) |
2892 | return BGP_ERR_DYNAMIC_NEIGHBORS_RANGE_NOT_FOUND; | |
2893 | ||
d62a17ae | 2894 | /* Dispose off any dynamic neighbors that exist due to this listen range |
2895 | */ | |
2896 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
2897 | if (!peer_dynamic_neighbor(peer)) | |
2898 | continue; | |
2899 | ||
0154d8ce DS |
2900 | if (sockunion2hostprefix(&peer->su, &prefix2) |
2901 | && prefix_match(prefix, &prefix2)) { | |
d62a17ae | 2902 | if (bgp_debug_neighbor_events(peer)) |
2903 | zlog_debug( | |
2dbe669b DA |
2904 | "Deleting dynamic neighbor %s group %s upon delete of listen range %pFX", |
2905 | peer->host, group->name, prefix); | |
d62a17ae | 2906 | peer_delete(peer); |
2907 | } | |
2908 | } | |
718e3744 | 2909 | |
d62a17ae | 2910 | /* Get rid of the listen range */ |
2911 | listnode_delete(group->listen_range[afi], prefix); | |
718e3744 | 2912 | |
9e7d9a61 QY |
2913 | /* Remove passwords for deleted ranges */ |
2914 | if (group->conf->password) | |
a4faae3a | 2915 | bgp_md5_unset_prefix(group->bgp, prefix); |
9e7d9a61 | 2916 | |
d62a17ae | 2917 | return 0; |
2918 | } | |
e0701b79 | 2919 | |
d62a17ae | 2920 | /* Bind specified peer to peer group. */ |
2921 | int peer_group_bind(struct bgp *bgp, union sockunion *su, struct peer *peer, | |
2922 | struct peer_group *group, as_t *as) | |
2923 | { | |
2924 | int first_member = 0; | |
2925 | afi_t afi; | |
2926 | safi_t safi; | |
469cbb0f | 2927 | bgp_peer_sort_t ptype, gtype; |
d62a17ae | 2928 | |
2929 | /* Lookup the peer. */ | |
2930 | if (!peer) | |
2931 | peer = peer_lookup(bgp, su); | |
2932 | ||
2933 | /* The peer exist, bind it to the peer-group */ | |
2934 | if (peer) { | |
ed9fb826 | 2935 | /* When the peer already belongs to a peer-group, check the |
d62a17ae | 2936 | * consistency. */ |
ed9fb826 DW |
2937 | if (peer_group_active(peer)) { |
2938 | ||
2939 | /* The peer is already bound to the peer-group, | |
d8a079e8 DW |
2940 | * nothing to do |
2941 | */ | |
ed9fb826 DW |
2942 | if (strcmp(peer->group->name, group->name) == 0) |
2943 | return 0; | |
2944 | else | |
2945 | return BGP_ERR_PEER_GROUP_CANT_CHANGE; | |
2946 | } | |
d62a17ae | 2947 | |
2948 | /* The peer has not specified a remote-as, inherit it from the | |
2949 | * peer-group */ | |
2950 | if (peer->as_type == AS_UNSPECIFIED) { | |
2951 | peer->as_type = group->conf->as_type; | |
2952 | peer->as = group->conf->as; | |
faa16034 | 2953 | peer->sort = group->conf->sort; |
d62a17ae | 2954 | } |
718e3744 | 2955 | |
469cbb0f DS |
2956 | ptype = peer_sort(peer); |
2957 | if (!group->conf->as && ptype != BGP_PEER_UNSPECIFIED) { | |
2958 | gtype = peer_sort(group->conf); | |
2959 | if ((gtype != BGP_PEER_INTERNAL) && (gtype != ptype)) { | |
d62a17ae | 2960 | if (as) |
2961 | *as = peer->as; | |
2962 | return BGP_ERR_PEER_GROUP_PEER_TYPE_DIFFERENT; | |
2963 | } | |
718e3744 | 2964 | |
469cbb0f | 2965 | if (gtype == BGP_PEER_INTERNAL) |
d62a17ae | 2966 | first_member = 1; |
2967 | } | |
718e3744 | 2968 | |
d62a17ae | 2969 | peer_group2peer_config_copy(group, peer); |
2970 | ||
05c7a1cc QY |
2971 | FOREACH_AFI_SAFI (afi, safi) { |
2972 | if (group->conf->afc[afi][safi]) { | |
2973 | peer->afc[afi][safi] = 1; | |
2974 | ||
2975 | if (peer_af_find(peer, afi, safi) | |
2976 | || peer_af_create(peer, afi, safi)) { | |
2977 | peer_group2peer_config_copy_af( | |
2978 | group, peer, afi, safi); | |
2979 | } | |
2980 | } else if (peer->afc[afi][safi]) | |
2981 | peer_deactivate(peer, afi, safi); | |
a4d82a8a | 2982 | } |
d62a17ae | 2983 | |
2984 | if (peer->group) { | |
2985 | assert(group && peer->group == group); | |
2986 | } else { | |
0866cdaf A |
2987 | listnode_delete(bgp->peer, peer); |
2988 | ||
d62a17ae | 2989 | peer->group = group; |
2990 | listnode_add_sort(bgp->peer, peer); | |
2991 | ||
2992 | peer = peer_lock(peer); /* group->peer list reference */ | |
2993 | listnode_add(group->peer, peer); | |
2994 | } | |
718e3744 | 2995 | |
d62a17ae | 2996 | if (first_member) { |
469cbb0f | 2997 | gtype = peer_sort(group->conf); |
d62a17ae | 2998 | /* Advertisement-interval reset */ |
b90a8e13 PM |
2999 | if (!CHECK_FLAG(group->conf->flags, |
3000 | PEER_FLAG_ROUTEADV)) { | |
3001 | group->conf->v_routeadv = | |
469cbb0f | 3002 | (gtype == BGP_PEER_IBGP) |
b90a8e13 PM |
3003 | ? BGP_DEFAULT_IBGP_ROUTEADV |
3004 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
d62a17ae | 3005 | } |
3006 | ||
3007 | /* ebgp-multihop reset */ | |
469cbb0f | 3008 | if (gtype == BGP_PEER_IBGP) |
d62a17ae | 3009 | group->conf->ttl = MAXTTL; |
3010 | ||
3011 | /* local-as reset */ | |
469cbb0f | 3012 | if (gtype != BGP_PEER_EBGP) { |
d62a17ae | 3013 | group->conf->change_local_as = 0; |
a14810f4 PM |
3014 | peer_flag_unset(group->conf, |
3015 | PEER_FLAG_LOCAL_AS); | |
3016 | peer_flag_unset(group->conf, | |
3017 | PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
3018 | peer_flag_unset(group->conf, | |
3019 | PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
d62a17ae | 3020 | } |
3021 | } | |
718e3744 | 3022 | |
d62a17ae | 3023 | SET_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE); |
718e3744 | 3024 | |
d62a17ae | 3025 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
3026 | peer->last_reset = PEER_DOWN_RMAP_BIND; | |
3027 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
3028 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
3029 | } else { | |
3030 | bgp_session_reset(peer); | |
3031 | } | |
3032 | } | |
718e3744 | 3033 | |
d62a17ae | 3034 | /* Create a new peer. */ |
3035 | else { | |
3036 | if ((group->conf->as_type == AS_SPECIFIED) | |
3037 | && (!group->conf->as)) { | |
3038 | return BGP_ERR_PEER_GROUP_NO_REMOTE_AS; | |
3039 | } | |
718e3744 | 3040 | |
d62a17ae | 3041 | peer = peer_create(su, NULL, bgp, bgp->as, group->conf->as, |
e84c59af | 3042 | group->conf->as_type, group); |
718e3744 | 3043 | |
d62a17ae | 3044 | peer = peer_lock(peer); /* group->peer list reference */ |
3045 | listnode_add(group->peer, peer); | |
718e3744 | 3046 | |
d62a17ae | 3047 | peer_group2peer_config_copy(group, peer); |
a4ed4829 | 3048 | |
d62a17ae | 3049 | /* If the peer-group is active for this afi/safi then activate |
3050 | * for this peer */ | |
05c7a1cc QY |
3051 | FOREACH_AFI_SAFI (afi, safi) { |
3052 | if (group->conf->afc[afi][safi]) { | |
3053 | peer->afc[afi][safi] = 1; | |
e84c59af DA |
3054 | |
3055 | if (!peer_af_find(peer, afi, safi)) | |
3056 | peer_af_create(peer, afi, safi); | |
3057 | ||
05c7a1cc QY |
3058 | peer_group2peer_config_copy_af(group, peer, afi, |
3059 | safi); | |
3060 | } else if (peer->afc[afi][safi]) | |
3061 | peer_deactivate(peer, afi, safi); | |
3062 | } | |
718e3744 | 3063 | |
d62a17ae | 3064 | SET_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE); |
718e3744 | 3065 | |
d62a17ae | 3066 | /* Set up peer's events and timers. */ |
3067 | if (peer_active(peer)) | |
3068 | bgp_timer_set(peer); | |
3069 | } | |
718e3744 | 3070 | |
d62a17ae | 3071 | return 0; |
718e3744 | 3072 | } |
3073 | ||
d62a17ae | 3074 | static int bgp_startup_timer_expire(struct thread *thread) |
3075 | { | |
3076 | struct bgp *bgp; | |
718e3744 | 3077 | |
d62a17ae | 3078 | bgp = THREAD_ARG(thread); |
3079 | bgp->t_startup = NULL; | |
718e3744 | 3080 | |
d62a17ae | 3081 | return 0; |
3082 | } | |
e0701b79 | 3083 | |
829e590b DS |
3084 | /* |
3085 | * On shutdown we call the cleanup function which | |
3086 | * does a free of the link list nodes, free up | |
3087 | * the data we are pointing at too. | |
3088 | */ | |
3089 | static void bgp_vrf_string_name_delete(void *data) | |
3090 | { | |
3091 | char *vname = data; | |
3092 | ||
3093 | XFREE(MTYPE_TMP, vname); | |
3094 | } | |
3095 | ||
d62a17ae | 3096 | /* BGP instance creation by `router bgp' commands. */ |
3097 | static struct bgp *bgp_create(as_t *as, const char *name, | |
3098 | enum bgp_instance_type inst_type) | |
3099 | { | |
0291c246 MK |
3100 | struct bgp *bgp; |
3101 | afi_t afi; | |
3102 | safi_t safi; | |
d62a17ae | 3103 | |
3104 | if ((bgp = XCALLOC(MTYPE_BGP, sizeof(struct bgp))) == NULL) | |
3105 | return NULL; | |
3106 | ||
3107 | if (BGP_DEBUG(zebra, ZEBRA)) { | |
3108 | if (inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
3109 | zlog_debug("Creating Default VRF, AS %u", *as); | |
3110 | else | |
3111 | zlog_debug("Creating %s %s, AS %u", | |
3112 | (inst_type == BGP_INSTANCE_TYPE_VRF) | |
3113 | ? "VRF" | |
3114 | : "VIEW", | |
3115 | name, *as); | |
718e3744 | 3116 | } |
adbac85e | 3117 | |
e2f3a930 T |
3118 | /* Default the EVPN VRF to the default one */ |
3119 | if (inst_type == BGP_INSTANCE_TYPE_DEFAULT && !bgp_master.bgp_evpn) { | |
3120 | bgp_lock(bgp); | |
3121 | bm->bgp_evpn = bgp; | |
3122 | } | |
3123 | ||
d62a17ae | 3124 | bgp_lock(bgp); |
b6c386bb DS |
3125 | |
3126 | bgp_process_queue_init(bgp); | |
9df5ac49 | 3127 | bgp->heuristic_coalesce = true; |
d62a17ae | 3128 | bgp->inst_type = inst_type; |
3129 | bgp->vrf_id = (inst_type == BGP_INSTANCE_TYPE_DEFAULT) ? VRF_DEFAULT | |
3130 | : VRF_UNKNOWN; | |
3131 | bgp->peer_self = peer_new(bgp); | |
0a22ddfb | 3132 | XFREE(MTYPE_BGP_PEER_HOST, bgp->peer_self->host); |
d62a17ae | 3133 | bgp->peer_self->host = |
3134 | XSTRDUP(MTYPE_BGP_PEER_HOST, "Static announcement"); | |
e1b36e13 | 3135 | XFREE(MTYPE_BGP_PEER_HOST, bgp->peer_self->hostname); |
6b3ee3a0 | 3136 | if (cmd_hostname_get()) |
60466a63 QY |
3137 | bgp->peer_self->hostname = |
3138 | XSTRDUP(MTYPE_BGP_PEER_HOST, cmd_hostname_get()); | |
d77114b7 | 3139 | |
e1b36e13 | 3140 | XFREE(MTYPE_BGP_PEER_HOST, bgp->peer_self->domainname); |
6b3ee3a0 | 3141 | if (cmd_domainname_get()) |
60466a63 QY |
3142 | bgp->peer_self->domainname = |
3143 | XSTRDUP(MTYPE_BGP_PEER_HOST, cmd_domainname_get()); | |
d62a17ae | 3144 | bgp->peer = list_new(); |
3145 | bgp->peer->cmp = (int (*)(void *, void *))peer_cmp; | |
a4d82a8a | 3146 | bgp->peerhash = hash_create(peer_hash_key_make, peer_hash_same, |
3f65c5b1 | 3147 | "BGP Peer Hash"); |
40520c36 | 3148 | bgp->peerhash->max_size = BGP_PEER_MAX_HASH_SIZE; |
d62a17ae | 3149 | |
3150 | bgp->group = list_new(); | |
3151 | bgp->group->cmp = (int (*)(void *, void *))peer_group_cmp; | |
3152 | ||
05c7a1cc | 3153 | FOREACH_AFI_SAFI (afi, safi) { |
960035b2 PZ |
3154 | bgp->route[afi][safi] = bgp_table_init(bgp, afi, safi); |
3155 | bgp->aggregate[afi][safi] = bgp_table_init(bgp, afi, safi); | |
3156 | bgp->rib[afi][safi] = bgp_table_init(bgp, afi, safi); | |
05c7a1cc QY |
3157 | |
3158 | /* Enable maximum-paths */ | |
3159 | bgp_maximum_paths_set(bgp, afi, safi, BGP_PEER_EBGP, | |
3160 | multipath_num, 0); | |
3161 | bgp_maximum_paths_set(bgp, afi, safi, BGP_PEER_IBGP, | |
3162 | multipath_num, 0); | |
cfd47646 | 3163 | /* Initialize graceful restart info */ |
3164 | bgp->gr_info[afi][safi].eor_required = 0; | |
3165 | bgp->gr_info[afi][safi].eor_received = 0; | |
3166 | bgp->gr_info[afi][safi].t_select_deferral = NULL; | |
3167 | bgp->gr_info[afi][safi].t_route_select = NULL; | |
26742171 | 3168 | bgp->gr_info[afi][safi].gr_deferred = 0; |
05c7a1cc | 3169 | } |
d62a17ae | 3170 | |
d70583f7 D |
3171 | bgp->v_update_delay = bm->v_update_delay; |
3172 | bgp->v_establish_wait = bm->v_establish_wait; | |
d62a17ae | 3173 | bgp->default_local_pref = BGP_DEFAULT_LOCAL_PREF; |
3174 | bgp->default_subgroup_pkt_queue_max = | |
3175 | BGP_DEFAULT_SUBGROUP_PKT_QUEUE_MAX; | |
5d5393b9 | 3176 | bgp_timers_unset(bgp); |
d62a17ae | 3177 | bgp->restart_time = BGP_DEFAULT_RESTART_TIME; |
3178 | bgp->stalepath_time = BGP_DEFAULT_STALEPATH_TIME; | |
cfd47646 | 3179 | bgp->select_defer_time = BGP_DEFAULT_SELECT_DEFERRAL_TIME; |
dc95985f | 3180 | bgp->rib_stale_time = BGP_DEFAULT_RIB_STALE_TIME; |
d62a17ae | 3181 | bgp->dynamic_neighbors_limit = BGP_DYNAMIC_NEIGHBORS_LIMIT_DEFAULT; |
3182 | bgp->dynamic_neighbors_count = 0; | |
b1875e65 | 3183 | bgp->lb_ref_bw = BGP_LINK_BW_REF_BW; |
f7e1c681 | 3184 | bgp->lb_handling = BGP_LINK_BW_ECMP; |
7f972cd8 | 3185 | bgp->reject_as_sets = false; |
dcc68b5e | 3186 | bgp_addpath_init_bgp_data(&bgp->tx_addpath); |
d62a17ae | 3187 | |
3188 | bgp->as = *as; | |
3189 | ||
49e5a4a0 | 3190 | #ifdef ENABLE_BGP_VNC |
d62a17ae | 3191 | if (inst_type != BGP_INSTANCE_TYPE_VRF) { |
3192 | bgp->rfapi = bgp_rfapi_new(bgp); | |
3193 | assert(bgp->rfapi); | |
3194 | assert(bgp->rfapi_cfg); | |
3195 | } | |
3196 | #endif /* ENABLE_BGP_VNC */ | |
adbac85e | 3197 | |
ddb5b488 | 3198 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { |
e70e9f8e PZ |
3199 | bgp->vpn_policy[afi].bgp = bgp; |
3200 | bgp->vpn_policy[afi].afi = afi; | |
ddb5b488 PZ |
3201 | bgp->vpn_policy[afi].tovpn_label = MPLS_LABEL_NONE; |
3202 | bgp->vpn_policy[afi].tovpn_zebra_vrf_label_last_sent = | |
3203 | MPLS_LABEL_NONE; | |
12a844a5 DS |
3204 | |
3205 | bgp->vpn_policy[afi].import_vrf = list_new(); | |
829e590b DS |
3206 | bgp->vpn_policy[afi].import_vrf->del = |
3207 | bgp_vrf_string_name_delete; | |
12a844a5 | 3208 | bgp->vpn_policy[afi].export_vrf = list_new(); |
829e590b DS |
3209 | bgp->vpn_policy[afi].export_vrf->del = |
3210 | bgp_vrf_string_name_delete; | |
ddb5b488 | 3211 | } |
dc95985f | 3212 | if (name) |
d62a17ae | 3213 | bgp->name = XSTRDUP(MTYPE_BGP, name); |
dc95985f | 3214 | |
3215 | thread_add_timer(bm->master, bgp_startup_timer_expire, bgp, | |
36235319 | 3216 | bgp->restart_time, &bgp->t_startup); |
06370dac | 3217 | |
3572fb26 PZ |
3218 | /* printable name we can use in debug messages */ |
3219 | if (inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
3220 | bgp->name_pretty = XSTRDUP(MTYPE_BGP, "VRF default"); | |
3221 | } else { | |
3222 | const char *n; | |
3223 | int len; | |
3224 | ||
3225 | if (bgp->name) | |
3226 | n = bgp->name; | |
3227 | else | |
3228 | n = "?"; | |
3229 | ||
3230 | len = 4 + 1 + strlen(n) + 1; /* "view foo\0" */ | |
3231 | ||
3232 | bgp->name_pretty = XCALLOC(MTYPE_BGP, len); | |
3233 | snprintf(bgp->name_pretty, len, "%s %s", | |
3234 | (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
3235 | ? "VRF" | |
3236 | : "VIEW", | |
3237 | n); | |
3238 | } | |
3239 | ||
555e09d4 QY |
3240 | atomic_store_explicit(&bgp->wpkt_quanta, BGP_WRITE_PACKET_MAX, |
3241 | memory_order_relaxed); | |
3242 | atomic_store_explicit(&bgp->rpkt_quanta, BGP_READ_PACKET_MAX, | |
3243 | memory_order_relaxed); | |
d62a17ae | 3244 | bgp->coalesce_time = BGP_DEFAULT_SUBGROUP_COALESCE_TIME; |
b16bcbba | 3245 | bgp->default_af[AFI_IP][SAFI_UNICAST] = true; |
adbac85e | 3246 | |
d62a17ae | 3247 | QOBJ_REG(bgp, bgp); |
adbac85e | 3248 | |
d62a17ae | 3249 | update_bgp_group_init(bgp); |
92708db6 | 3250 | |
3251 | /* assign a unique rd id for auto derivation of vrf's RD */ | |
3252 | bf_assign_index(bm->rd_idspace, bgp->vrf_rd_id); | |
3253 | ||
85c8d83b CS |
3254 | bgp->evpn_info = XCALLOC(MTYPE_BGP_EVPN_INFO, |
3255 | sizeof(struct bgp_evpn_info)); | |
3256 | ||
d62a17ae | 3257 | bgp_evpn_init(bgp); |
c589d847 | 3258 | bgp_evpn_vrf_es_init(bgp); |
f3d32faa | 3259 | bgp_pbr_init(bgp); |
92a9e6f2 | 3260 | bgp_srv6_init(bgp); |
794b37d5 | 3261 | |
3262 | /*initilize global GR FSM */ | |
3263 | bgp_global_gr_init(bgp); | |
d62a17ae | 3264 | return bgp; |
718e3744 | 3265 | } |
3266 | ||
d62a17ae | 3267 | /* Return the "default VRF" instance of BGP. */ |
3268 | struct bgp *bgp_get_default(void) | |
718e3744 | 3269 | { |
d62a17ae | 3270 | struct bgp *bgp; |
3271 | struct listnode *node, *nnode; | |
3272 | ||
3273 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) | |
3274 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
3275 | return bgp; | |
3276 | return NULL; | |
718e3744 | 3277 | } |
3278 | ||
d62a17ae | 3279 | /* Lookup BGP entry. */ |
3280 | struct bgp *bgp_lookup(as_t as, const char *name) | |
718e3744 | 3281 | { |
d62a17ae | 3282 | struct bgp *bgp; |
3283 | struct listnode *node, *nnode; | |
6b0655a2 | 3284 | |
d62a17ae | 3285 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) |
3286 | if (bgp->as == as | |
3287 | && ((bgp->name == NULL && name == NULL) | |
3288 | || (bgp->name && name && strcmp(bgp->name, name) == 0))) | |
3289 | return bgp; | |
3290 | return NULL; | |
3291 | } | |
73d70fa6 | 3292 | |
d62a17ae | 3293 | /* Lookup BGP structure by view name. */ |
3294 | struct bgp *bgp_lookup_by_name(const char *name) | |
73d70fa6 | 3295 | { |
d62a17ae | 3296 | struct bgp *bgp; |
3297 | struct listnode *node, *nnode; | |
3298 | ||
3299 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) | |
3300 | if ((bgp->name == NULL && name == NULL) | |
3301 | || (bgp->name && name && strcmp(bgp->name, name) == 0)) | |
3302 | return bgp; | |
3303 | return NULL; | |
73d70fa6 DL |
3304 | } |
3305 | ||
d62a17ae | 3306 | /* Lookup BGP instance based on VRF id. */ |
3307 | /* Note: Only to be used for incoming messages from Zebra. */ | |
3308 | struct bgp *bgp_lookup_by_vrf_id(vrf_id_t vrf_id) | |
73d70fa6 | 3309 | { |
d62a17ae | 3310 | struct vrf *vrf; |
3311 | ||
3312 | /* Lookup VRF (in tree) and follow link. */ | |
3313 | vrf = vrf_lookup_by_id(vrf_id); | |
3314 | if (!vrf) | |
3315 | return NULL; | |
3316 | return (vrf->info) ? (struct bgp *)vrf->info : NULL; | |
73d70fa6 DL |
3317 | } |
3318 | ||
e2f3a930 T |
3319 | /* Sets the BGP instance where EVPN is enabled */ |
3320 | void bgp_set_evpn(struct bgp *bgp) | |
3321 | { | |
3322 | if (bm->bgp_evpn == bgp) | |
3323 | return; | |
3324 | ||
3325 | /* First, release the reference count we hold on the instance */ | |
3326 | if (bm->bgp_evpn) | |
3327 | bgp_unlock(bm->bgp_evpn); | |
3328 | ||
3329 | bm->bgp_evpn = bgp; | |
3330 | ||
3331 | /* Increase the reference count on this new VRF */ | |
3332 | if (bm->bgp_evpn) | |
3333 | bgp_lock(bm->bgp_evpn); | |
3334 | } | |
3335 | ||
3336 | /* Returns the BGP instance where EVPN is enabled, if any */ | |
3337 | struct bgp *bgp_get_evpn(void) | |
3338 | { | |
3339 | return bm->bgp_evpn; | |
3340 | } | |
3341 | ||
e5619c28 PG |
3342 | /* handle socket creation or deletion, if necessary |
3343 | * this is called for all new BGP instances | |
3344 | */ | |
996c9314 LB |
3345 | int bgp_handle_socket(struct bgp *bgp, struct vrf *vrf, vrf_id_t old_vrf_id, |
3346 | bool create) | |
e5619c28 | 3347 | { |
85e9cd9a AMR |
3348 | struct listnode *node; |
3349 | char *address; | |
e5619c28 PG |
3350 | |
3351 | /* Create BGP server socket, if listen mode not disabled */ | |
3352 | if (!bgp || bgp_option_check(BGP_OPT_NO_LISTEN)) | |
3353 | return 0; | |
3ad00234 | 3354 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { |
e5619c28 PG |
3355 | /* |
3356 | * suppress vrf socket | |
3357 | */ | |
a8f58eb6 | 3358 | if (!create) { |
3ad00234 LB |
3359 | bgp_close_vrf_socket(bgp); |
3360 | return 0; | |
e5619c28 | 3361 | } |
3ad00234 LB |
3362 | if (vrf == NULL) |
3363 | return BGP_ERR_INVALID_VALUE; | |
e5619c28 PG |
3364 | /* do nothing |
3365 | * if vrf_id did not change | |
3366 | */ | |
3367 | if (vrf->vrf_id == old_vrf_id) | |
3368 | return 0; | |
3369 | if (old_vrf_id != VRF_UNKNOWN) { | |
3370 | /* look for old socket. close it. */ | |
3371 | bgp_close_vrf_socket(bgp); | |
3372 | } | |
3373 | /* if backend is not yet identified ( VRF_UNKNOWN) then | |
3374 | * creation will be done later | |
3375 | */ | |
3376 | if (vrf->vrf_id == VRF_UNKNOWN) | |
3377 | return 0; | |
85e9cd9a AMR |
3378 | if (list_isempty(bm->addresses)) { |
3379 | if (bgp_socket(bgp, bm->port, NULL) < 0) | |
3380 | return BGP_ERR_INVALID_VALUE; | |
3381 | } else { | |
3382 | for (ALL_LIST_ELEMENTS_RO(bm->addresses, node, address)) | |
3383 | if (bgp_socket(bgp, bm->port, address) < 0) | |
3384 | return BGP_ERR_INVALID_VALUE; | |
3385 | } | |
3ad00234 LB |
3386 | return 0; |
3387 | } else | |
3388 | return bgp_check_main_socket(create, bgp); | |
e5619c28 PG |
3389 | } |
3390 | ||
bdaadb91 CS |
3391 | int bgp_lookup_by_as_name_type(struct bgp **bgp_val, as_t *as, const char *name, |
3392 | enum bgp_instance_type inst_type) | |
d62a17ae | 3393 | { |
3394 | struct bgp *bgp; | |
3395 | ||
3396 | /* Multiple instance check. */ | |
8fbb4853 DS |
3397 | if (name) |
3398 | bgp = bgp_lookup_by_name(name); | |
3399 | else | |
d62a17ae | 3400 | bgp = bgp_get_default(); |
3401 | ||
8fbb4853 | 3402 | if (bgp) { |
0d6d0208 | 3403 | *bgp_val = bgp; |
8fbb4853 DS |
3404 | if (bgp->as != *as) { |
3405 | *as = bgp->as; | |
d09328e5 | 3406 | return BGP_ERR_AS_MISMATCH; |
d62a17ae | 3407 | } |
8fbb4853 DS |
3408 | if (bgp->inst_type != inst_type) |
3409 | return BGP_ERR_INSTANCE_MISMATCH; | |
d5568431 | 3410 | return BGP_SUCCESS; |
d62a17ae | 3411 | } |
bdaadb91 CS |
3412 | *bgp_val = NULL; |
3413 | ||
3414 | return BGP_SUCCESS; | |
3415 | } | |
3416 | ||
3417 | /* Called from VTY commands. */ | |
3418 | int bgp_get(struct bgp **bgp_val, as_t *as, const char *name, | |
3419 | enum bgp_instance_type inst_type) | |
3420 | { | |
3421 | struct bgp *bgp; | |
3422 | struct vrf *vrf = NULL; | |
3423 | int ret = 0; | |
3424 | ||
3425 | ret = bgp_lookup_by_as_name_type(bgp_val, as, name, inst_type); | |
d09328e5 | 3426 | if (ret || *bgp_val) |
bdaadb91 | 3427 | return ret; |
73d70fa6 | 3428 | |
d62a17ae | 3429 | bgp = bgp_create(as, name, inst_type); |
0b014ea6 PG |
3430 | if (bgp_option_check(BGP_OPT_NO_ZEBRA) && name) |
3431 | bgp->vrf_id = vrf_generate_id(); | |
2951a7a4 | 3432 | bgp_router_id_set(bgp, &bgp->router_id_zebra, true); |
d62a17ae | 3433 | bgp_address_init(bgp); |
db0e1937 | 3434 | bgp_tip_hash_init(bgp); |
d62a17ae | 3435 | bgp_scan_init(bgp); |
3436 | *bgp_val = bgp; | |
eb821189 | 3437 | |
d62a17ae | 3438 | bgp->t_rmap_def_originate_eval = NULL; |
e5cc509c | 3439 | |
d62a17ae | 3440 | /* If Default instance or VRF, link to the VRF structure, if present. */ |
3441 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT | |
3442 | || bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
d62a17ae | 3443 | vrf = bgp_vrf_lookup_by_instance_type(bgp); |
3444 | if (vrf) | |
3445 | bgp_vrf_link(bgp, vrf); | |
3446 | } | |
e5619c28 PG |
3447 | /* BGP server socket already processed if BGP instance |
3448 | * already part of the list | |
3449 | */ | |
3450 | bgp_handle_socket(bgp, vrf, VRF_UNKNOWN, true); | |
3451 | listnode_add(bm->bgp, bgp); | |
718e3744 | 3452 | |
bb4ef1ae DS |
3453 | if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
3454 | if (BGP_DEBUG(zebra, ZEBRA)) | |
3455 | zlog_debug("%s: Registering BGP instance %s to zebra", | |
15569c58 | 3456 | __func__, name); |
d62a17ae | 3457 | bgp_zebra_instance_register(bgp); |
bb4ef1ae | 3458 | } |
718e3744 | 3459 | |
5d5393b9 | 3460 | return BGP_CREATED; |
718e3744 | 3461 | } |
6b0655a2 | 3462 | |
6cc0114b IR |
3463 | static void bgp_zclient_set_redist(afi_t afi, int type, unsigned short instance, |
3464 | vrf_id_t vrf_id, bool set) | |
3465 | { | |
3466 | if (instance) { | |
3467 | if (set) | |
3468 | redist_add_instance(&zclient->mi_redist[afi][type], | |
3469 | instance); | |
3470 | else | |
3471 | redist_del_instance(&zclient->mi_redist[afi][type], | |
3472 | instance); | |
3473 | } else { | |
3474 | if (set) | |
3475 | vrf_bitmap_set(zclient->redist[afi][type], vrf_id); | |
3476 | else | |
3477 | vrf_bitmap_unset(zclient->redist[afi][type], vrf_id); | |
3478 | } | |
3479 | } | |
3480 | ||
3481 | static void bgp_set_redist_vrf_bitmaps(struct bgp *bgp, bool set) | |
3482 | { | |
3483 | afi_t afi; | |
3484 | int i; | |
3485 | struct list *red_list; | |
3486 | struct listnode *node; | |
3487 | struct bgp_redist *red; | |
3488 | ||
3489 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3490 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
3491 | ||
3492 | red_list = bgp->redist[afi][i]; | |
3493 | if (!red_list) | |
3494 | continue; | |
3495 | ||
3496 | for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) | |
3497 | bgp_zclient_set_redist(afi, i, red->instance, | |
3498 | bgp->vrf_id, set); | |
3499 | } | |
3500 | } | |
3501 | } | |
3502 | ||
d62a17ae | 3503 | /* |
3504 | * Make BGP instance "up". Applies only to VRFs (non-default) and | |
3505 | * implies the VRF has been learnt from Zebra. | |
3506 | */ | |
3507 | void bgp_instance_up(struct bgp *bgp) | |
718e3744 | 3508 | { |
d62a17ae | 3509 | struct peer *peer; |
3510 | struct listnode *node, *next; | |
718e3744 | 3511 | |
6cc0114b IR |
3512 | bgp_set_redist_vrf_bitmaps(bgp, true); |
3513 | ||
d62a17ae | 3514 | /* Register with zebra. */ |
3515 | bgp_zebra_instance_register(bgp); | |
718e3744 | 3516 | |
d62a17ae | 3517 | /* Kick off any peers that may have been configured. */ |
3518 | for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer)) { | |
3519 | if (!BGP_PEER_START_SUPPRESSED(peer)) | |
3520 | BGP_EVENT_ADD(peer, BGP_Start); | |
718e3744 | 3521 | } |
3522 | ||
d62a17ae | 3523 | /* Process any networks that have been configured. */ |
3524 | bgp_static_add(bgp); | |
3525 | } | |
3526 | ||
3527 | /* | |
3528 | * Make BGP instance "down". Applies only to VRFs (non-default) and | |
3529 | * implies the VRF has been deleted by Zebra. | |
3530 | */ | |
3531 | void bgp_instance_down(struct bgp *bgp) | |
3532 | { | |
3533 | struct peer *peer; | |
3534 | struct listnode *node; | |
3535 | struct listnode *next; | |
3536 | ||
3537 | /* Stop timers. */ | |
3538 | if (bgp->t_rmap_def_originate_eval) { | |
3539 | BGP_TIMER_OFF(bgp->t_rmap_def_originate_eval); | |
3540 | bgp_unlock(bgp); /* TODO - This timer is started with a lock - | |
3541 | why? */ | |
718e3744 | 3542 | } |
3543 | ||
d62a17ae | 3544 | /* Bring down peers, so corresponding routes are purged. */ |
3545 | for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer)) { | |
3546 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
3547 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
3548 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN); | |
3549 | else | |
3550 | bgp_session_reset(peer); | |
3551 | } | |
718e3744 | 3552 | |
d62a17ae | 3553 | /* Purge network and redistributed routes. */ |
3554 | bgp_purge_static_redist_routes(bgp); | |
ee7ca6c0 | 3555 | |
3556 | /* Cleanup registered nexthops (flags) */ | |
3557 | bgp_cleanup_nexthops(bgp); | |
6cc0114b IR |
3558 | |
3559 | bgp_zebra_instance_deregister(bgp); | |
3560 | ||
3561 | bgp_set_redist_vrf_bitmaps(bgp, false); | |
718e3744 | 3562 | } |
3563 | ||
d62a17ae | 3564 | /* Delete BGP instance. */ |
3565 | int bgp_delete(struct bgp *bgp) | |
3566 | { | |
3567 | struct peer *peer; | |
3568 | struct peer_group *group; | |
3569 | struct listnode *node, *next; | |
3570 | struct vrf *vrf; | |
3571 | afi_t afi; | |
cfd47646 | 3572 | safi_t safi; |
d62a17ae | 3573 | int i; |
cfd47646 | 3574 | struct graceful_restart_info *gr_info; |
d62a17ae | 3575 | |
bf383464 | 3576 | assert(bgp); |
2b9bcf30 | 3577 | |
46aeabed LS |
3578 | bgp_soft_reconfig_table_task_cancel(bgp, NULL, NULL); |
3579 | ||
1bfd9dcc PR |
3580 | /* make sure we withdraw any exported routes */ |
3581 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP, bgp_get_default(), | |
3582 | bgp); | |
3583 | vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP6, bgp_get_default(), | |
3584 | bgp); | |
3585 | ||
3586 | bgp_vpn_leak_unimport(bgp); | |
3587 | ||
2b9bcf30 DL |
3588 | hook_call(bgp_inst_delete, bgp); |
3589 | ||
d62a17ae | 3590 | THREAD_OFF(bgp->t_startup); |
c969b2ed DS |
3591 | THREAD_OFF(bgp->t_maxmed_onstartup); |
3592 | THREAD_OFF(bgp->t_update_delay); | |
3593 | THREAD_OFF(bgp->t_establish_wait); | |
d62a17ae | 3594 | |
9f822fa2 | 3595 | /* Set flag indicating bgp instance delete in progress */ |
892fedb6 | 3596 | SET_FLAG(bgp->flags, BGP_FLAG_DELETE_IN_PROGRESS); |
9f822fa2 | 3597 | |
cfd47646 | 3598 | /* Delete the graceful restart info */ |
3599 | FOREACH_AFI_SAFI (afi, safi) { | |
56c226e7 DS |
3600 | struct thread *t; |
3601 | ||
cfd47646 | 3602 | gr_info = &bgp->gr_info[afi][safi]; |
13909c4f DS |
3603 | if (!gr_info) |
3604 | continue; | |
3605 | ||
3606 | BGP_TIMER_OFF(gr_info->t_select_deferral); | |
56c226e7 DS |
3607 | |
3608 | t = gr_info->t_route_select; | |
3609 | if (t) { | |
3610 | void *info = THREAD_ARG(t); | |
3611 | ||
3612 | XFREE(MTYPE_TMP, info); | |
3613 | } | |
13909c4f | 3614 | BGP_TIMER_OFF(gr_info->t_route_select); |
cfd47646 | 3615 | } |
3616 | ||
40ec3340 DS |
3617 | /* Delete route flap dampening configuration */ |
3618 | FOREACH_AFI_SAFI (afi, safi) { | |
3619 | bgp_damp_disable(bgp, afi, safi); | |
3620 | } | |
3621 | ||
d62a17ae | 3622 | if (BGP_DEBUG(zebra, ZEBRA)) { |
3623 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
3624 | zlog_debug("Deleting Default VRF"); | |
3625 | else | |
3626 | zlog_debug("Deleting %s %s", | |
3627 | (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) | |
3628 | ? "VRF" | |
3629 | : "VIEW", | |
3630 | bgp->name); | |
718e3744 | 3631 | } |
3632 | ||
10ebe1ab MK |
3633 | /* unmap from RT list */ |
3634 | bgp_evpn_vrf_delete(bgp); | |
3635 | ||
dfd17258 PG |
3636 | /* unmap bgp vrf label */ |
3637 | vpn_leak_zebra_vrf_label_withdraw(bgp, AFI_IP); | |
3638 | vpn_leak_zebra_vrf_label_withdraw(bgp, AFI_IP6); | |
3639 | ||
d62a17ae | 3640 | /* Stop timers. */ |
3641 | if (bgp->t_rmap_def_originate_eval) { | |
3642 | BGP_TIMER_OFF(bgp->t_rmap_def_originate_eval); | |
3643 | bgp_unlock(bgp); /* TODO - This timer is started with a lock - | |
3644 | why? */ | |
718e3744 | 3645 | } |
3646 | ||
d62a17ae | 3647 | /* Inform peers we're going down. */ |
3648 | for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer)) { | |
3649 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
3650 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
3651 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN); | |
718e3744 | 3652 | } |
3653 | ||
d62a17ae | 3654 | /* Delete static routes (networks). */ |
3655 | bgp_static_delete(bgp); | |
6b0655a2 | 3656 | |
d62a17ae | 3657 | /* Unset redistribution. */ |
3658 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
3659 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
3660 | if (i != ZEBRA_ROUTE_BGP) | |
3661 | bgp_redistribute_unset(bgp, afi, i, 0); | |
718e3744 | 3662 | |
d62a17ae | 3663 | /* Free peers and peer-groups. */ |
3664 | for (ALL_LIST_ELEMENTS(bgp->group, node, next, group)) | |
3665 | peer_group_delete(group); | |
718e3744 | 3666 | |
d62a17ae | 3667 | for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer)) |
3668 | peer_delete(peer); | |
3669 | ||
3670 | if (bgp->peer_self) { | |
3671 | peer_delete(bgp->peer_self); | |
3672 | bgp->peer_self = NULL; | |
718e3744 | 3673 | } |
3674 | ||
d62a17ae | 3675 | update_bgp_group_free(bgp); |
718e3744 | 3676 | |
d62a17ae | 3677 | /* TODO - Other memory may need to be freed - e.g., NHT */ |
3678 | ||
49e5a4a0 | 3679 | #ifdef ENABLE_BGP_VNC |
d62a17ae | 3680 | rfapi_delete(bgp); |
3681 | #endif | |
3682 | bgp_cleanup_routes(bgp); | |
718e3744 | 3683 | |
301ad80a PG |
3684 | for (afi = 0; afi < AFI_MAX; ++afi) { |
3685 | if (!bgp->vpn_policy[afi].import_redirect_rtlist) | |
3686 | continue; | |
3687 | ecommunity_free( | |
3688 | &bgp->vpn_policy[afi] | |
3689 | .import_redirect_rtlist); | |
3690 | bgp->vpn_policy[afi].import_redirect_rtlist = NULL; | |
3691 | } | |
718e3744 | 3692 | |
d62a17ae | 3693 | /* Deregister from Zebra, if needed */ |
bb4ef1ae DS |
3694 | if (IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
3695 | if (BGP_DEBUG(zebra, ZEBRA)) | |
5e81f5dd DS |
3696 | zlog_debug( |
3697 | "%s: deregistering this bgp %s instance from zebra", | |
3698 | __func__, bgp->name); | |
d62a17ae | 3699 | bgp_zebra_instance_deregister(bgp); |
bb4ef1ae | 3700 | } |
718e3744 | 3701 | |
de6058ab AK |
3702 | /* Remove visibility via the master list - there may however still be |
3703 | * routes to be processed still referencing the struct bgp. | |
3704 | */ | |
3705 | listnode_delete(bm->bgp, bgp); | |
3706 | ||
d62a17ae | 3707 | /* Free interfaces in this instance. */ |
3708 | bgp_if_finish(bgp); | |
718e3744 | 3709 | |
d62a17ae | 3710 | vrf = bgp_vrf_lookup_by_instance_type(bgp); |
e5619c28 | 3711 | bgp_handle_socket(bgp, vrf, VRF_UNKNOWN, false); |
d62a17ae | 3712 | if (vrf) |
3713 | bgp_vrf_unlink(bgp, vrf); | |
718e3744 | 3714 | |
e2f3a930 T |
3715 | /* Update EVPN VRF pointer */ |
3716 | if (bm->bgp_evpn == bgp) { | |
3717 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) | |
3718 | bgp_set_evpn(NULL); | |
3719 | else | |
3720 | bgp_set_evpn(bgp_get_default()); | |
3721 | } | |
3722 | ||
b6c386bb DS |
3723 | if (bgp->process_queue) |
3724 | work_queue_free_and_null(&bgp->process_queue); | |
3725 | ||
d62a17ae | 3726 | thread_master_free_unused(bm->master); |
3727 | bgp_unlock(bgp); /* initial reference */ | |
718e3744 | 3728 | |
d62a17ae | 3729 | return 0; |
718e3744 | 3730 | } |
6b0655a2 | 3731 | |
92375c91 | 3732 | void bgp_free(struct bgp *bgp) |
d93f7ffc | 3733 | { |
d62a17ae | 3734 | afi_t afi; |
3735 | safi_t safi; | |
3736 | struct bgp_table *table; | |
9bcb3eef | 3737 | struct bgp_dest *dest; |
f8265580 | 3738 | struct bgp_rmap *rmap; |
d93f7ffc | 3739 | |
d62a17ae | 3740 | QOBJ_UNREG(bgp); |
d93f7ffc | 3741 | |
6a154c88 DL |
3742 | list_delete(&bgp->group); |
3743 | list_delete(&bgp->peer); | |
966f821c | 3744 | |
d62a17ae | 3745 | if (bgp->peerhash) { |
3746 | hash_free(bgp->peerhash); | |
3747 | bgp->peerhash = NULL; | |
3748 | } | |
718e3744 | 3749 | |
05c7a1cc QY |
3750 | FOREACH_AFI_SAFI (afi, safi) { |
3751 | /* Special handling for 2-level routing tables. */ | |
3752 | if (safi == SAFI_MPLS_VPN || safi == SAFI_ENCAP | |
3753 | || safi == SAFI_EVPN) { | |
9bcb3eef DS |
3754 | for (dest = bgp_table_top(bgp->rib[afi][safi]); dest; |
3755 | dest = bgp_route_next(dest)) { | |
3756 | table = bgp_dest_get_bgp_table_info(dest); | |
05c7a1cc | 3757 | bgp_table_finish(&table); |
d62a17ae | 3758 | } |
d62a17ae | 3759 | } |
05c7a1cc QY |
3760 | if (bgp->route[afi][safi]) |
3761 | bgp_table_finish(&bgp->route[afi][safi]); | |
3762 | if (bgp->aggregate[afi][safi]) | |
3763 | bgp_table_finish(&bgp->aggregate[afi][safi]); | |
3764 | if (bgp->rib[afi][safi]) | |
3765 | bgp_table_finish(&bgp->rib[afi][safi]); | |
3766 | rmap = &bgp->table_map[afi][safi]; | |
0a22ddfb | 3767 | XFREE(MTYPE_ROUTE_MAP_NAME, rmap->name); |
05c7a1cc | 3768 | } |
718e3744 | 3769 | |
d62a17ae | 3770 | bgp_scan_finish(bgp); |
3771 | bgp_address_destroy(bgp); | |
db0e1937 | 3772 | bgp_tip_hash_destroy(bgp); |
966f821c | 3773 | |
92708db6 | 3774 | /* release the auto RD id */ |
3775 | bf_release_index(bm->rd_idspace, bgp->vrf_rd_id); | |
3776 | ||
d62a17ae | 3777 | bgp_evpn_cleanup(bgp); |
a6b07429 | 3778 | bgp_pbr_cleanup(bgp); |
92a9e6f2 | 3779 | bgp_srv6_cleanup(bgp); |
85c8d83b | 3780 | XFREE(MTYPE_BGP_EVPN_INFO, bgp->evpn_info); |
829e590b DS |
3781 | |
3782 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3783 | vpn_policy_direction_t dir; | |
3784 | ||
3785 | if (bgp->vpn_policy[afi].import_vrf) | |
6a154c88 | 3786 | list_delete(&bgp->vpn_policy[afi].import_vrf); |
829e590b | 3787 | if (bgp->vpn_policy[afi].export_vrf) |
6a154c88 | 3788 | list_delete(&bgp->vpn_policy[afi].export_vrf); |
829e590b DS |
3789 | |
3790 | dir = BGP_VPN_POLICY_DIR_FROMVPN; | |
3791 | if (bgp->vpn_policy[afi].rtlist[dir]) | |
3792 | ecommunity_free(&bgp->vpn_policy[afi].rtlist[dir]); | |
3793 | dir = BGP_VPN_POLICY_DIR_TOVPN; | |
3794 | if (bgp->vpn_policy[afi].rtlist[dir]) | |
3795 | ecommunity_free(&bgp->vpn_policy[afi].rtlist[dir]); | |
3796 | } | |
3797 | ||
0a22ddfb QY |
3798 | XFREE(MTYPE_BGP, bgp->name); |
3799 | XFREE(MTYPE_BGP, bgp->name_pretty); | |
0d020cd6 | 3800 | XFREE(MTYPE_BGP, bgp->snmp_stats); |
966f821c | 3801 | |
d62a17ae | 3802 | XFREE(MTYPE_BGP, bgp); |
718e3744 | 3803 | } |
3804 | ||
d62a17ae | 3805 | struct peer *peer_lookup_by_conf_if(struct bgp *bgp, const char *conf_if) |
718e3744 | 3806 | { |
d62a17ae | 3807 | struct peer *peer; |
3808 | struct listnode *node, *nnode; | |
966f821c | 3809 | |
d62a17ae | 3810 | if (!conf_if) |
3811 | return NULL; | |
6b0655a2 | 3812 | |
d62a17ae | 3813 | if (bgp != NULL) { |
3814 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) | |
3815 | if (peer->conf_if && !strcmp(peer->conf_if, conf_if) | |
3816 | && !CHECK_FLAG(peer->sflags, | |
3817 | PEER_STATUS_ACCEPT_PEER)) | |
3818 | return peer; | |
3819 | } else if (bm->bgp != NULL) { | |
3820 | struct listnode *bgpnode, *nbgpnode; | |
3821 | ||
3822 | for (ALL_LIST_ELEMENTS(bm->bgp, bgpnode, nbgpnode, bgp)) | |
3823 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) | |
3824 | if (peer->conf_if | |
3825 | && !strcmp(peer->conf_if, conf_if) | |
3826 | && !CHECK_FLAG(peer->sflags, | |
3827 | PEER_STATUS_ACCEPT_PEER)) | |
3828 | return peer; | |
3829 | } | |
3830 | return NULL; | |
718e3744 | 3831 | } |
3832 | ||
d62a17ae | 3833 | struct peer *peer_lookup_by_hostname(struct bgp *bgp, const char *hostname) |
718e3744 | 3834 | { |
d62a17ae | 3835 | struct peer *peer; |
3836 | struct listnode *node, *nnode; | |
6b0655a2 | 3837 | |
d62a17ae | 3838 | if (!hostname) |
3839 | return NULL; | |
6b0655a2 | 3840 | |
d62a17ae | 3841 | if (bgp != NULL) { |
3842 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) | |
3843 | if (peer->hostname && !strcmp(peer->hostname, hostname) | |
3844 | && !CHECK_FLAG(peer->sflags, | |
3845 | PEER_STATUS_ACCEPT_PEER)) | |
3846 | return peer; | |
3847 | } else if (bm->bgp != NULL) { | |
3848 | struct listnode *bgpnode, *nbgpnode; | |
3849 | ||
3850 | for (ALL_LIST_ELEMENTS(bm->bgp, bgpnode, nbgpnode, bgp)) | |
3851 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) | |
3852 | if (peer->hostname | |
3853 | && !strcmp(peer->hostname, hostname) | |
3854 | && !CHECK_FLAG(peer->sflags, | |
3855 | PEER_STATUS_ACCEPT_PEER)) | |
3856 | return peer; | |
3857 | } | |
3858 | return NULL; | |
3859 | } | |
3860 | ||
3861 | struct peer *peer_lookup(struct bgp *bgp, union sockunion *su) | |
3862 | { | |
3863 | struct peer *peer = NULL; | |
3864 | struct peer tmp_peer; | |
3865 | ||
3866 | memset(&tmp_peer, 0, sizeof(struct peer)); | |
3867 | ||
3868 | /* | |
3869 | * We do not want to find the doppelganger peer so search for the peer | |
3870 | * in | |
3871 | * the hash that has PEER_FLAG_CONFIG_NODE | |
3872 | */ | |
3873 | SET_FLAG(tmp_peer.flags, PEER_FLAG_CONFIG_NODE); | |
3874 | ||
3875 | tmp_peer.su = *su; | |
3876 | ||
3877 | if (bgp != NULL) { | |
3878 | peer = hash_lookup(bgp->peerhash, &tmp_peer); | |
3879 | } else if (bm->bgp != NULL) { | |
3880 | struct listnode *bgpnode, *nbgpnode; | |
3881 | ||
3882 | for (ALL_LIST_ELEMENTS(bm->bgp, bgpnode, nbgpnode, bgp)) { | |
d62a17ae | 3883 | peer = hash_lookup(bgp->peerhash, &tmp_peer); |
d62a17ae | 3884 | if (peer) |
3885 | break; | |
3886 | } | |
3887 | } | |
3888 | ||
3889 | return peer; | |
3890 | } | |
3891 | ||
3892 | struct peer *peer_create_bind_dynamic_neighbor(struct bgp *bgp, | |
3893 | union sockunion *su, | |
3894 | struct peer_group *group) | |
3895 | { | |
3896 | struct peer *peer; | |
3897 | afi_t afi; | |
3898 | safi_t safi; | |
3899 | ||
3900 | /* Create peer first; we've already checked group config is valid. */ | |
3901 | peer = peer_create(su, NULL, bgp, bgp->as, group->conf->as, | |
e84c59af | 3902 | group->conf->as_type, group); |
d62a17ae | 3903 | if (!peer) |
3904 | return NULL; | |
3905 | ||
3906 | /* Link to group */ | |
3907 | peer = peer_lock(peer); | |
3908 | listnode_add(group->peer, peer); | |
3909 | ||
3910 | peer_group2peer_config_copy(group, peer); | |
3911 | ||
3912 | /* | |
3913 | * Bind peer for all AFs configured for the group. We don't call | |
3914 | * peer_group_bind as that is sub-optimal and does some stuff we don't | |
3915 | * want. | |
3916 | */ | |
05c7a1cc QY |
3917 | FOREACH_AFI_SAFI (afi, safi) { |
3918 | if (!group->conf->afc[afi][safi]) | |
3919 | continue; | |
3920 | peer->afc[afi][safi] = 1; | |
d62a17ae | 3921 | |
05c7a1cc QY |
3922 | if (!peer_af_find(peer, afi, safi)) |
3923 | peer_af_create(peer, afi, safi); | |
d62a17ae | 3924 | |
05c7a1cc QY |
3925 | peer_group2peer_config_copy_af(group, peer, afi, safi); |
3926 | } | |
d62a17ae | 3927 | |
3928 | /* Mark as dynamic, but also as a "config node" for other things to | |
3929 | * work. */ | |
3930 | SET_FLAG(peer->flags, PEER_FLAG_DYNAMIC_NEIGHBOR); | |
3931 | SET_FLAG(peer->flags, PEER_FLAG_CONFIG_NODE); | |
3932 | ||
3933 | return peer; | |
3934 | } | |
3935 | ||
3936 | struct prefix * | |
3937 | peer_group_lookup_dynamic_neighbor_range(struct peer_group *group, | |
3938 | struct prefix *prefix) | |
3939 | { | |
3940 | struct listnode *node, *nnode; | |
3941 | struct prefix *range; | |
3942 | afi_t afi; | |
3943 | ||
3944 | afi = family2afi(prefix->family); | |
3945 | ||
3946 | if (group->listen_range[afi]) | |
3947 | for (ALL_LIST_ELEMENTS(group->listen_range[afi], node, nnode, | |
3948 | range)) | |
3949 | if (prefix_match(range, prefix)) | |
3950 | return range; | |
3951 | ||
3952 | return NULL; | |
3953 | } | |
3954 | ||
3955 | struct peer_group * | |
3956 | peer_group_lookup_dynamic_neighbor(struct bgp *bgp, struct prefix *prefix, | |
3957 | struct prefix **listen_range) | |
3958 | { | |
3959 | struct prefix *range = NULL; | |
3960 | struct peer_group *group = NULL; | |
3961 | struct listnode *node, *nnode; | |
3962 | ||
3963 | *listen_range = NULL; | |
3964 | if (bgp != NULL) { | |
3965 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) | |
3966 | if ((range = peer_group_lookup_dynamic_neighbor_range( | |
3967 | group, prefix))) | |
3968 | break; | |
3969 | } else if (bm->bgp != NULL) { | |
3970 | struct listnode *bgpnode, *nbgpnode; | |
3971 | ||
3972 | for (ALL_LIST_ELEMENTS(bm->bgp, bgpnode, nbgpnode, bgp)) | |
3973 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) | |
3974 | if ((range = peer_group_lookup_dynamic_neighbor_range( | |
3975 | group, prefix))) | |
3976 | goto found_range; | |
3977 | } | |
3978 | ||
3979 | found_range: | |
3980 | *listen_range = range; | |
3981 | return (group && range) ? group : NULL; | |
3982 | } | |
3983 | ||
3984 | struct peer *peer_lookup_dynamic_neighbor(struct bgp *bgp, union sockunion *su) | |
3985 | { | |
3986 | struct peer_group *group; | |
3987 | struct bgp *gbgp; | |
3988 | struct peer *peer; | |
3989 | struct prefix prefix; | |
3990 | struct prefix *listen_range; | |
3991 | int dncount; | |
3992 | char buf[PREFIX2STR_BUFFER]; | |
d62a17ae | 3993 | |
0154d8ce DS |
3994 | if (!sockunion2hostprefix(su, &prefix)) |
3995 | return NULL; | |
d62a17ae | 3996 | |
3997 | /* See if incoming connection matches a configured listen range. */ | |
3998 | group = peer_group_lookup_dynamic_neighbor(bgp, &prefix, &listen_range); | |
3999 | ||
4000 | if (!group) | |
4001 | return NULL; | |
4002 | ||
4003 | ||
4004 | gbgp = group->bgp; | |
4005 | ||
4006 | if (!gbgp) | |
4007 | return NULL; | |
4008 | ||
4009 | prefix2str(&prefix, buf, sizeof(buf)); | |
d62a17ae | 4010 | |
4011 | if (bgp_debug_neighbor_events(NULL)) | |
4012 | zlog_debug( | |
2dbe669b DA |
4013 | "Dynamic Neighbor %s matches group %s listen range %pFX", |
4014 | buf, group->name, listen_range); | |
d62a17ae | 4015 | |
4016 | /* Are we within the listen limit? */ | |
4017 | dncount = gbgp->dynamic_neighbors_count; | |
4018 | ||
4019 | if (dncount >= gbgp->dynamic_neighbors_limit) { | |
4020 | if (bgp_debug_neighbor_events(NULL)) | |
4021 | zlog_debug("Dynamic Neighbor %s rejected - at limit %d", | |
4022 | inet_sutop(su, buf), | |
4023 | gbgp->dynamic_neighbors_limit); | |
4024 | return NULL; | |
4025 | } | |
4026 | ||
4027 | /* Ensure group is not disabled. */ | |
4028 | if (CHECK_FLAG(group->conf->flags, PEER_FLAG_SHUTDOWN)) { | |
4029 | if (bgp_debug_neighbor_events(NULL)) | |
4030 | zlog_debug( | |
4031 | "Dynamic Neighbor %s rejected - group %s disabled", | |
4032 | buf, group->name); | |
4033 | return NULL; | |
4034 | } | |
4035 | ||
4036 | /* Check that at least one AF is activated for the group. */ | |
4037 | if (!peer_group_af_configured(group)) { | |
4038 | if (bgp_debug_neighbor_events(NULL)) | |
4039 | zlog_debug( | |
4040 | "Dynamic Neighbor %s rejected - no AF activated for group %s", | |
4041 | buf, group->name); | |
4042 | return NULL; | |
4043 | } | |
4044 | ||
4045 | /* Create dynamic peer and bind to associated group. */ | |
4046 | peer = peer_create_bind_dynamic_neighbor(gbgp, su, group); | |
4047 | assert(peer); | |
4048 | ||
4049 | gbgp->dynamic_neighbors_count = ++dncount; | |
4050 | ||
4051 | if (bgp_debug_neighbor_events(peer)) | |
4052 | zlog_debug("%s Dynamic Neighbor added, group %s count %d", | |
4053 | peer->host, group->name, dncount); | |
4054 | ||
4055 | return peer; | |
4056 | } | |
4057 | ||
cc32742c | 4058 | static void peer_drop_dynamic_neighbor(struct peer *peer) |
d62a17ae | 4059 | { |
4060 | int dncount = -1; | |
cc32742c | 4061 | if (peer->group->bgp) { |
d62a17ae | 4062 | dncount = peer->group->bgp->dynamic_neighbors_count; |
4063 | if (dncount) | |
4064 | peer->group->bgp->dynamic_neighbors_count = --dncount; | |
4065 | } | |
4066 | if (bgp_debug_neighbor_events(peer)) | |
4067 | zlog_debug("%s dropped from group %s, count %d", peer->host, | |
4068 | peer->group->name, dncount); | |
4069 | } | |
4070 | ||
d62a17ae | 4071 | /* If peer is configured at least one address family return 1. */ |
3dc339cd | 4072 | bool peer_active(struct peer *peer) |
d62a17ae | 4073 | { |
4074 | if (BGP_PEER_SU_UNSPEC(peer)) | |
3dc339cd | 4075 | return false; |
d62a17ae | 4076 | if (peer->afc[AFI_IP][SAFI_UNICAST] || peer->afc[AFI_IP][SAFI_MULTICAST] |
4077 | || peer->afc[AFI_IP][SAFI_LABELED_UNICAST] | |
4078 | || peer->afc[AFI_IP][SAFI_MPLS_VPN] || peer->afc[AFI_IP][SAFI_ENCAP] | |
7c40bf39 | 4079 | || peer->afc[AFI_IP][SAFI_FLOWSPEC] |
d62a17ae | 4080 | || peer->afc[AFI_IP6][SAFI_UNICAST] |
4081 | || peer->afc[AFI_IP6][SAFI_MULTICAST] | |
4082 | || peer->afc[AFI_IP6][SAFI_LABELED_UNICAST] | |
4083 | || peer->afc[AFI_IP6][SAFI_MPLS_VPN] | |
4084 | || peer->afc[AFI_IP6][SAFI_ENCAP] | |
7c40bf39 | 4085 | || peer->afc[AFI_IP6][SAFI_FLOWSPEC] |
d62a17ae | 4086 | || peer->afc[AFI_L2VPN][SAFI_EVPN]) |
3dc339cd DA |
4087 | return true; |
4088 | return false; | |
d62a17ae | 4089 | } |
4090 | ||
4091 | /* If peer is negotiated at least one address family return 1. */ | |
3dc339cd | 4092 | bool peer_active_nego(struct peer *peer) |
d62a17ae | 4093 | { |
4094 | if (peer->afc_nego[AFI_IP][SAFI_UNICAST] | |
4095 | || peer->afc_nego[AFI_IP][SAFI_MULTICAST] | |
4096 | || peer->afc_nego[AFI_IP][SAFI_LABELED_UNICAST] | |
4097 | || peer->afc_nego[AFI_IP][SAFI_MPLS_VPN] | |
4098 | || peer->afc_nego[AFI_IP][SAFI_ENCAP] | |
7c40bf39 | 4099 | || peer->afc_nego[AFI_IP][SAFI_FLOWSPEC] |
d62a17ae | 4100 | || peer->afc_nego[AFI_IP6][SAFI_UNICAST] |
4101 | || peer->afc_nego[AFI_IP6][SAFI_MULTICAST] | |
4102 | || peer->afc_nego[AFI_IP6][SAFI_LABELED_UNICAST] | |
4103 | || peer->afc_nego[AFI_IP6][SAFI_MPLS_VPN] | |
4104 | || peer->afc_nego[AFI_IP6][SAFI_ENCAP] | |
7c40bf39 | 4105 | || peer->afc_nego[AFI_IP6][SAFI_FLOWSPEC] |
d62a17ae | 4106 | || peer->afc_nego[AFI_L2VPN][SAFI_EVPN]) |
3dc339cd DA |
4107 | return true; |
4108 | return false; | |
d62a17ae | 4109 | } |
4110 | ||
dcc68b5e | 4111 | void peer_change_action(struct peer *peer, afi_t afi, safi_t safi, |
d62a17ae | 4112 | enum peer_change_type type) |
4113 | { | |
8b56739e DA |
4114 | struct peer_af *paf; |
4115 | ||
d62a17ae | 4116 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
4117 | return; | |
4118 | ||
feb17238 | 4119 | if (!peer_established(peer)) |
d62a17ae | 4120 | return; |
4121 | ||
4122 | if (type == peer_change_reset) { | |
4123 | /* If we're resetting session, we've to delete both peer struct | |
4124 | */ | |
4125 | if ((peer->doppelganger) | |
4126 | && (peer->doppelganger->status != Deleted) | |
4127 | && (!CHECK_FLAG(peer->doppelganger->flags, | |
4128 | PEER_FLAG_CONFIG_NODE))) | |
4129 | peer_delete(peer->doppelganger); | |
4130 | ||
4131 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4132 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4133 | } else if (type == peer_change_reset_in) { | |
4134 | if (CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_OLD_RCV) | |
4135 | || CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_NEW_RCV)) | |
9af52ccf DA |
4136 | bgp_route_refresh_send(peer, afi, safi, 0, 0, 0, |
4137 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 4138 | else { |
4139 | if ((peer->doppelganger) | |
4140 | && (peer->doppelganger->status != Deleted) | |
4141 | && (!CHECK_FLAG(peer->doppelganger->flags, | |
4142 | PEER_FLAG_CONFIG_NODE))) | |
4143 | peer_delete(peer->doppelganger); | |
4144 | ||
4145 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4146 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4147 | } | |
4148 | } else if (type == peer_change_reset_out) { | |
8b56739e DA |
4149 | paf = peer_af_find(peer, afi, safi); |
4150 | if (paf && paf->subgroup) | |
4151 | SET_FLAG(paf->subgroup->sflags, | |
4152 | SUBGRP_STATUS_FORCE_UPDATES); | |
4153 | ||
4154 | update_group_adjust_peer(paf); | |
d62a17ae | 4155 | bgp_announce_route(peer, afi, safi); |
4156 | } | |
4157 | } | |
4158 | ||
4159 | struct peer_flag_action { | |
4160 | /* Peer's flag. */ | |
d7c0a89a | 4161 | uint32_t flag; |
d62a17ae | 4162 | |
4163 | /* This flag can be set for peer-group member. */ | |
d7c0a89a | 4164 | uint8_t not_for_member; |
d62a17ae | 4165 | |
4166 | /* Action when the flag is changed. */ | |
4167 | enum peer_change_type type; | |
d62a17ae | 4168 | }; |
4169 | ||
4170 | static const struct peer_flag_action peer_flag_action_list[] = { | |
4171 | {PEER_FLAG_PASSIVE, 0, peer_change_reset}, | |
4172 | {PEER_FLAG_SHUTDOWN, 0, peer_change_reset}, | |
8336c896 | 4173 | {PEER_FLAG_RTT_SHUTDOWN, 0, peer_change_none}, |
d62a17ae | 4174 | {PEER_FLAG_DONT_CAPABILITY, 0, peer_change_none}, |
4175 | {PEER_FLAG_OVERRIDE_CAPABILITY, 0, peer_change_none}, | |
4176 | {PEER_FLAG_STRICT_CAP_MATCH, 0, peer_change_none}, | |
4177 | {PEER_FLAG_DYNAMIC_CAPABILITY, 0, peer_change_reset}, | |
4178 | {PEER_FLAG_DISABLE_CONNECTED_CHECK, 0, peer_change_reset}, | |
4179 | {PEER_FLAG_CAPABILITY_ENHE, 0, peer_change_reset}, | |
47cbc09b | 4180 | {PEER_FLAG_ENFORCE_FIRST_AS, 0, peer_change_reset_in}, |
afad5ced | 4181 | {PEER_FLAG_IFPEER_V6ONLY, 0, peer_change_reset}, |
b90a8e13 PM |
4182 | {PEER_FLAG_ROUTEADV, 0, peer_change_none}, |
4183 | {PEER_FLAG_TIMER, 0, peer_change_none}, | |
4184 | {PEER_FLAG_TIMER_CONNECT, 0, peer_change_none}, | |
6c537a18 | 4185 | {PEER_FLAG_TIMER_DELAYOPEN, 0, peer_change_none}, |
a14810f4 PM |
4186 | {PEER_FLAG_PASSWORD, 0, peer_change_none}, |
4187 | {PEER_FLAG_LOCAL_AS, 0, peer_change_none}, | |
4188 | {PEER_FLAG_LOCAL_AS_NO_PREPEND, 0, peer_change_none}, | |
4189 | {PEER_FLAG_LOCAL_AS_REPLACE_AS, 0, peer_change_none}, | |
4190 | {PEER_FLAG_UPDATE_SOURCE, 0, peer_change_none}, | |
d62a17ae | 4191 | {0, 0, 0}}; |
4192 | ||
4193 | static const struct peer_flag_action peer_af_flag_action_list[] = { | |
4194 | {PEER_FLAG_SEND_COMMUNITY, 1, peer_change_reset_out}, | |
4195 | {PEER_FLAG_SEND_EXT_COMMUNITY, 1, peer_change_reset_out}, | |
4196 | {PEER_FLAG_SEND_LARGE_COMMUNITY, 1, peer_change_reset_out}, | |
4197 | {PEER_FLAG_NEXTHOP_SELF, 1, peer_change_reset_out}, | |
4198 | {PEER_FLAG_REFLECTOR_CLIENT, 1, peer_change_reset}, | |
4199 | {PEER_FLAG_RSERVER_CLIENT, 1, peer_change_reset}, | |
4200 | {PEER_FLAG_SOFT_RECONFIG, 0, peer_change_reset_in}, | |
4201 | {PEER_FLAG_AS_PATH_UNCHANGED, 1, peer_change_reset_out}, | |
4202 | {PEER_FLAG_NEXTHOP_UNCHANGED, 1, peer_change_reset_out}, | |
4203 | {PEER_FLAG_MED_UNCHANGED, 1, peer_change_reset_out}, | |
598ce6bd | 4204 | {PEER_FLAG_DEFAULT_ORIGINATE, 0, peer_change_none}, |
d62a17ae | 4205 | {PEER_FLAG_REMOVE_PRIVATE_AS, 1, peer_change_reset_out}, |
4206 | {PEER_FLAG_ALLOWAS_IN, 0, peer_change_reset_in}, | |
4207 | {PEER_FLAG_ALLOWAS_IN_ORIGIN, 0, peer_change_reset_in}, | |
4208 | {PEER_FLAG_ORF_PREFIX_SM, 1, peer_change_reset}, | |
4209 | {PEER_FLAG_ORF_PREFIX_RM, 1, peer_change_reset}, | |
598ce6bd PM |
4210 | {PEER_FLAG_MAX_PREFIX, 0, peer_change_none}, |
4211 | {PEER_FLAG_MAX_PREFIX_WARNING, 0, peer_change_none}, | |
9cbd06e0 | 4212 | {PEER_FLAG_MAX_PREFIX_FORCE, 0, peer_change_none}, |
d62a17ae | 4213 | {PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED, 0, peer_change_reset_out}, |
4214 | {PEER_FLAG_FORCE_NEXTHOP_SELF, 1, peer_change_reset_out}, | |
4215 | {PEER_FLAG_REMOVE_PRIVATE_AS_ALL, 1, peer_change_reset_out}, | |
4216 | {PEER_FLAG_REMOVE_PRIVATE_AS_REPLACE, 1, peer_change_reset_out}, | |
4217 | {PEER_FLAG_AS_OVERRIDE, 1, peer_change_reset_out}, | |
4218 | {PEER_FLAG_REMOVE_PRIVATE_AS_ALL_REPLACE, 1, peer_change_reset_out}, | |
d62a17ae | 4219 | {PEER_FLAG_WEIGHT, 0, peer_change_reset_in}, |
4220 | {0, 0, 0}}; | |
4221 | ||
4222 | /* Proper action set. */ | |
4223 | static int peer_flag_action_set(const struct peer_flag_action *action_list, | |
4224 | int size, struct peer_flag_action *action, | |
d7c0a89a | 4225 | uint32_t flag) |
d62a17ae | 4226 | { |
4227 | int i; | |
4228 | int found = 0; | |
4229 | int reset_in = 0; | |
4230 | int reset_out = 0; | |
4231 | const struct peer_flag_action *match = NULL; | |
4232 | ||
4233 | /* Check peer's frag action. */ | |
4234 | for (i = 0; i < size; i++) { | |
4235 | match = &action_list[i]; | |
4236 | ||
4237 | if (match->flag == 0) | |
4238 | break; | |
4239 | ||
4240 | if (match->flag & flag) { | |
4241 | found = 1; | |
4242 | ||
4243 | if (match->type == peer_change_reset_in) | |
4244 | reset_in = 1; | |
4245 | if (match->type == peer_change_reset_out) | |
4246 | reset_out = 1; | |
4247 | if (match->type == peer_change_reset) { | |
4248 | reset_in = 1; | |
4249 | reset_out = 1; | |
4250 | } | |
4251 | if (match->not_for_member) | |
4252 | action->not_for_member = 1; | |
4253 | } | |
4254 | } | |
4255 | ||
4256 | /* Set peer clear type. */ | |
4257 | if (reset_in && reset_out) | |
4258 | action->type = peer_change_reset; | |
4259 | else if (reset_in) | |
4260 | action->type = peer_change_reset_in; | |
4261 | else if (reset_out) | |
4262 | action->type = peer_change_reset_out; | |
4263 | else | |
4264 | action->type = peer_change_none; | |
4265 | ||
4266 | return found; | |
4267 | } | |
4268 | ||
d7c0a89a | 4269 | static void peer_flag_modify_action(struct peer *peer, uint32_t flag) |
d62a17ae | 4270 | { |
4271 | if (flag == PEER_FLAG_SHUTDOWN) { | |
4272 | if (CHECK_FLAG(peer->flags, flag)) { | |
4273 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT)) | |
4274 | peer_nsf_stop(peer); | |
4275 | ||
4276 | UNSET_FLAG(peer->sflags, PEER_STATUS_PREFIX_OVERFLOW); | |
8336c896 | 4277 | |
d62a17ae | 4278 | if (peer->t_pmax_restart) { |
4279 | BGP_TIMER_OFF(peer->t_pmax_restart); | |
4280 | if (bgp_debug_neighbor_events(peer)) | |
4281 | zlog_debug( | |
4282 | "%s Maximum-prefix restart timer canceled", | |
4283 | peer->host); | |
4284 | } | |
4285 | ||
d62a17ae | 4286 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
4287 | char *msg = peer->tx_shutdown_message; | |
4288 | size_t msglen; | |
4289 | ||
4290 | if (!msg && peer_group_active(peer)) | |
4291 | msg = peer->group->conf | |
4292 | ->tx_shutdown_message; | |
4293 | msglen = msg ? strlen(msg) : 0; | |
4294 | if (msglen > 128) | |
4295 | msglen = 128; | |
4296 | ||
4297 | if (msglen) { | |
d7c0a89a | 4298 | uint8_t msgbuf[129]; |
d62a17ae | 4299 | |
4300 | msgbuf[0] = msglen; | |
4301 | memcpy(msgbuf + 1, msg, msglen); | |
4302 | ||
4303 | bgp_notify_send_with_data( | |
4304 | peer, BGP_NOTIFY_CEASE, | |
4305 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN, | |
4306 | msgbuf, msglen + 1); | |
4307 | } else | |
4308 | bgp_notify_send( | |
4309 | peer, BGP_NOTIFY_CEASE, | |
4310 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN); | |
4311 | } else | |
4312 | bgp_session_reset(peer); | |
4313 | } else { | |
4314 | peer->v_start = BGP_INIT_START_TIMER; | |
4315 | BGP_EVENT_ADD(peer, BGP_Stop); | |
4316 | } | |
4317 | } else if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { | |
4318 | if (flag == PEER_FLAG_DYNAMIC_CAPABILITY) | |
4319 | peer->last_reset = PEER_DOWN_CAPABILITY_CHANGE; | |
4320 | else if (flag == PEER_FLAG_PASSIVE) | |
4321 | peer->last_reset = PEER_DOWN_PASSIVE_CHANGE; | |
4322 | else if (flag == PEER_FLAG_DISABLE_CONNECTED_CHECK) | |
4323 | peer->last_reset = PEER_DOWN_MULTIHOP_CHANGE; | |
4324 | ||
4325 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4326 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4327 | } else | |
4328 | bgp_session_reset(peer); | |
4329 | } | |
4330 | ||
9cf59432 | 4331 | /* Enable global administrative shutdown of all peers of BGP instance */ |
736b68f3 | 4332 | void bgp_shutdown_enable(struct bgp *bgp, const char *msg) |
9cf59432 DS |
4333 | { |
4334 | struct peer *peer; | |
4335 | struct listnode *node; | |
4336 | ||
4337 | /* do nothing if already shut down */ | |
4338 | if (CHECK_FLAG(bgp->flags, BGP_FLAG_SHUTDOWN)) | |
4339 | return; | |
4340 | ||
8389c83a DS |
4341 | /* informational log message */ |
4342 | zlog_info("Enabled administrative shutdown on BGP instance AS %u", | |
4343 | bgp->as); | |
e03f1f18 | 4344 | |
9cf59432 DS |
4345 | /* iterate through peers of BGP instance */ |
4346 | for (ALL_LIST_ELEMENTS_RO(bgp->peer, node, peer)) { | |
4347 | /* continue, if peer is already in administrative shutdown. */ | |
4348 | if (CHECK_FLAG(peer->flags, PEER_FLAG_SHUTDOWN)) | |
4349 | continue; | |
4350 | ||
4351 | /* send a RFC 4486 notification message if necessary */ | |
4352 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { | |
8389c83a | 4353 | if (msg) |
736b68f3 DS |
4354 | bgp_notify_send_with_data( |
4355 | peer, BGP_NOTIFY_CEASE, | |
4356 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN, | |
4357 | (uint8_t *)(msg), strlen(msg)); | |
8389c83a | 4358 | else |
736b68f3 DS |
4359 | bgp_notify_send( |
4360 | peer, BGP_NOTIFY_CEASE, | |
4361 | BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN); | |
9cf59432 DS |
4362 | } |
4363 | ||
4364 | /* reset start timer to initial value */ | |
4365 | peer->v_start = BGP_INIT_START_TIMER; | |
4366 | ||
4367 | /* trigger a RFC 4271 ManualStop event */ | |
4368 | BGP_EVENT_ADD(peer, BGP_Stop); | |
4369 | } | |
4370 | ||
4371 | /* set the BGP instances shutdown flag */ | |
4372 | SET_FLAG(bgp->flags, BGP_FLAG_SHUTDOWN); | |
4373 | } | |
4374 | ||
4375 | /* Disable global administrative shutdown of all peers of BGP instance */ | |
4376 | void bgp_shutdown_disable(struct bgp *bgp) | |
4377 | { | |
9cf59432 DS |
4378 | /* do nothing if not shut down. */ |
4379 | if (!CHECK_FLAG(bgp->flags, BGP_FLAG_SHUTDOWN)) | |
4380 | return; | |
4381 | ||
8389c83a DS |
4382 | /* informational log message */ |
4383 | zlog_info("Disabled administrative shutdown on BGP instance AS %u", | |
4384 | bgp->as); | |
9cf59432 DS |
4385 | |
4386 | /* clear the BGP instances shutdown flag */ | |
4387 | UNSET_FLAG(bgp->flags, BGP_FLAG_SHUTDOWN); | |
4388 | } | |
4389 | ||
d62a17ae | 4390 | /* Change specified peer flag. */ |
d7c0a89a | 4391 | static int peer_flag_modify(struct peer *peer, uint32_t flag, int set) |
d62a17ae | 4392 | { |
4393 | int found; | |
4394 | int size; | |
9fb964de PM |
4395 | bool invert, member_invert; |
4396 | struct peer *member; | |
d62a17ae | 4397 | struct listnode *node, *nnode; |
4398 | struct peer_flag_action action; | |
4399 | ||
4400 | memset(&action, 0, sizeof(struct peer_flag_action)); | |
0d6f7fd6 | 4401 | size = sizeof(peer_flag_action_list) / sizeof(struct peer_flag_action); |
d62a17ae | 4402 | |
9fb964de | 4403 | invert = CHECK_FLAG(peer->flags_invert, flag); |
d62a17ae | 4404 | found = peer_flag_action_set(peer_flag_action_list, size, &action, |
4405 | flag); | |
4406 | ||
9fb964de | 4407 | /* Abort if no flag action exists. */ |
d62a17ae | 4408 | if (!found) |
4409 | return BGP_ERR_INVALID_FLAG; | |
4410 | ||
9fb964de | 4411 | /* Check for flag conflict: STRICT_CAP_MATCH && OVERRIDE_CAPABILITY */ |
d62a17ae | 4412 | if (set && CHECK_FLAG(peer->flags | flag, PEER_FLAG_STRICT_CAP_MATCH) |
4413 | && CHECK_FLAG(peer->flags | flag, PEER_FLAG_OVERRIDE_CAPABILITY)) | |
4414 | return BGP_ERR_PEER_FLAG_CONFLICT; | |
4415 | ||
9fb964de | 4416 | /* Handle flag updates where desired state matches current state. */ |
d62a17ae | 4417 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
9fb964de PM |
4418 | if (set && CHECK_FLAG(peer->flags, flag)) { |
4419 | COND_FLAG(peer->flags_override, flag, !invert); | |
d62a17ae | 4420 | return 0; |
9fb964de PM |
4421 | } |
4422 | ||
4423 | if (!set && !CHECK_FLAG(peer->flags, flag)) { | |
4424 | COND_FLAG(peer->flags_override, flag, invert); | |
d62a17ae | 4425 | return 0; |
9fb964de | 4426 | } |
d62a17ae | 4427 | } |
4428 | ||
9fb964de PM |
4429 | /* Inherit from peer-group or set/unset flags accordingly. */ |
4430 | if (peer_group_active(peer) && set == invert) | |
4431 | peer_flag_inherit(peer, flag); | |
d62a17ae | 4432 | else |
9fb964de | 4433 | COND_FLAG(peer->flags, flag, set); |
d62a17ae | 4434 | |
9fb964de | 4435 | /* Check if handling a regular peer. */ |
d62a17ae | 4436 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
9fb964de PM |
4437 | /* Update flag override state accordingly. */ |
4438 | COND_FLAG(peer->flags_override, flag, set != invert); | |
4439 | ||
b3a3290e DS |
4440 | /* |
4441 | * For the extended next-hop encoding flag we need to turn RAs | |
4442 | * on if flag is being set, but only turn RAs off if the flag | |
4443 | * is being unset on this peer and if this peer is a member of a | |
4444 | * peer-group, the peer-group also doesn't have the flag set. | |
4445 | */ | |
4446 | if (flag == PEER_FLAG_CAPABILITY_ENHE) { | |
4447 | if (set) { | |
4448 | bgp_zebra_initiate_radv(peer->bgp, peer); | |
4449 | } else if (peer_group_active(peer)) { | |
4450 | if (!CHECK_FLAG(peer->group->conf->flags, flag)) | |
4451 | bgp_zebra_terminate_radv(peer->bgp, | |
4452 | peer); | |
4453 | } else | |
4454 | bgp_zebra_terminate_radv(peer->bgp, peer); | |
4455 | } | |
087a1c6c | 4456 | |
9fb964de | 4457 | /* Execute flag action on peer. */ |
d62a17ae | 4458 | if (action.type == peer_change_reset) |
4459 | peer_flag_modify_action(peer, flag); | |
4460 | ||
9fb964de | 4461 | /* Skip peer-group mechanics for regular peers. */ |
d62a17ae | 4462 | return 0; |
4463 | } | |
4464 | ||
9fb964de PM |
4465 | /* |
4466 | * Update peer-group members, unless they are explicitely overriding | |
4467 | * peer-group configuration. | |
4468 | */ | |
4469 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
4470 | /* Skip peers with overridden configuration. */ | |
4471 | if (CHECK_FLAG(member->flags_override, flag)) | |
4472 | continue; | |
d62a17ae | 4473 | |
527de3dc PM |
4474 | /* Check if only member without group is inverted. */ |
4475 | member_invert = | |
4476 | CHECK_FLAG(member->flags_invert, flag) && !invert; | |
d62a17ae | 4477 | |
9fb964de PM |
4478 | /* Skip peers with equivalent configuration. */ |
4479 | if (set != member_invert && CHECK_FLAG(member->flags, flag)) | |
d62a17ae | 4480 | continue; |
4481 | ||
9fb964de | 4482 | if (set == member_invert && !CHECK_FLAG(member->flags, flag)) |
d62a17ae | 4483 | continue; |
4484 | ||
9fb964de PM |
4485 | /* Update flag on peer-group member. */ |
4486 | COND_FLAG(member->flags, flag, set != member_invert); | |
d62a17ae | 4487 | |
b3a3290e DS |
4488 | if (flag == PEER_FLAG_CAPABILITY_ENHE) |
4489 | set ? bgp_zebra_initiate_radv(member->bgp, member) | |
4490 | : bgp_zebra_terminate_radv(member->bgp, member); | |
1ea03b90 | 4491 | |
9fb964de | 4492 | /* Execute flag action on peer-group member. */ |
d62a17ae | 4493 | if (action.type == peer_change_reset) |
9fb964de | 4494 | peer_flag_modify_action(member, flag); |
d62a17ae | 4495 | } |
9fb964de | 4496 | |
d62a17ae | 4497 | return 0; |
4498 | } | |
4499 | ||
d7c0a89a | 4500 | int peer_flag_set(struct peer *peer, uint32_t flag) |
d62a17ae | 4501 | { |
4502 | return peer_flag_modify(peer, flag, 1); | |
4503 | } | |
4504 | ||
d7c0a89a | 4505 | int peer_flag_unset(struct peer *peer, uint32_t flag) |
d62a17ae | 4506 | { |
4507 | return peer_flag_modify(peer, flag, 0); | |
4508 | } | |
4509 | ||
4510 | static int peer_af_flag_modify(struct peer *peer, afi_t afi, safi_t safi, | |
27c05d4d | 4511 | uint32_t flag, bool set) |
d62a17ae | 4512 | { |
4513 | int found; | |
4514 | int size; | |
527de3dc | 4515 | bool invert, member_invert; |
527de3dc | 4516 | struct peer *member; |
d62a17ae | 4517 | struct listnode *node, *nnode; |
d62a17ae | 4518 | struct peer_flag_action action; |
469cbb0f | 4519 | bgp_peer_sort_t ptype; |
d62a17ae | 4520 | |
4521 | memset(&action, 0, sizeof(struct peer_flag_action)); | |
0d6f7fd6 | 4522 | size = sizeof(peer_af_flag_action_list) |
d62a17ae | 4523 | / sizeof(struct peer_flag_action); |
4524 | ||
27c05d4d | 4525 | invert = CHECK_FLAG(peer->af_flags_invert[afi][safi], flag); |
d62a17ae | 4526 | found = peer_flag_action_set(peer_af_flag_action_list, size, &action, |
4527 | flag); | |
4528 | ||
527de3dc | 4529 | /* Abort if flag action exists. */ |
d62a17ae | 4530 | if (!found) |
4531 | return BGP_ERR_INVALID_FLAG; | |
4532 | ||
469cbb0f | 4533 | ptype = peer_sort(peer); |
d62a17ae | 4534 | /* Special check for reflector client. */ |
469cbb0f | 4535 | if (flag & PEER_FLAG_REFLECTOR_CLIENT && ptype != BGP_PEER_IBGP) |
d62a17ae | 4536 | return BGP_ERR_NOT_INTERNAL_PEER; |
4537 | ||
4538 | /* Special check for remove-private-AS. */ | |
469cbb0f | 4539 | if (flag & PEER_FLAG_REMOVE_PRIVATE_AS && ptype == BGP_PEER_IBGP) |
d62a17ae | 4540 | return BGP_ERR_REMOVE_PRIVATE_AS; |
4541 | ||
4542 | /* as-override is not allowed for IBGP peers */ | |
469cbb0f | 4543 | if (flag & PEER_FLAG_AS_OVERRIDE && ptype == BGP_PEER_IBGP) |
d62a17ae | 4544 | return BGP_ERR_AS_OVERRIDE; |
4545 | ||
527de3dc | 4546 | /* Handle flag updates where desired state matches current state. */ |
d62a17ae | 4547 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
598ce6bd | 4548 | if (set && CHECK_FLAG(peer->af_flags[afi][safi], flag)) { |
527de3dc PM |
4549 | COND_FLAG(peer->af_flags_override[afi][safi], flag, |
4550 | !invert); | |
d62a17ae | 4551 | return 0; |
598ce6bd PM |
4552 | } |
4553 | ||
4554 | if (!set && !CHECK_FLAG(peer->af_flags[afi][safi], flag)) { | |
527de3dc PM |
4555 | COND_FLAG(peer->af_flags_override[afi][safi], flag, |
4556 | invert); | |
d62a17ae | 4557 | return 0; |
598ce6bd | 4558 | } |
d62a17ae | 4559 | } |
4560 | ||
ace295a9 MK |
4561 | /* |
4562 | * For EVPN we implicitly set the NEXTHOP_UNCHANGED flag, | |
4563 | * if we are setting/unsetting flags which conflict with this flag | |
4564 | * handle accordingly | |
4565 | */ | |
4566 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { | |
4567 | if (set) { | |
4568 | ||
3518f352 DS |
4569 | /* |
4570 | * if we are setting NEXTHOP_SELF, we need to unset the | |
4571 | * NEXTHOP_UNCHANGED flag | |
4572 | */ | |
ace295a9 MK |
4573 | if (CHECK_FLAG(flag, PEER_FLAG_NEXTHOP_SELF) || |
4574 | CHECK_FLAG(flag, PEER_FLAG_FORCE_NEXTHOP_SELF)) | |
4575 | UNSET_FLAG(peer->af_flags[afi][safi], | |
4576 | PEER_FLAG_NEXTHOP_UNCHANGED); | |
4577 | } else { | |
4578 | ||
3518f352 DS |
4579 | /* |
4580 | * if we are unsetting NEXTHOP_SELF, we need to set the | |
ace295a9 MK |
4581 | * NEXTHOP_UNCHANGED flag to reset the defaults for EVPN |
4582 | */ | |
4583 | if (CHECK_FLAG(flag, PEER_FLAG_NEXTHOP_SELF) || | |
4584 | CHECK_FLAG(flag, PEER_FLAG_FORCE_NEXTHOP_SELF)) | |
4585 | SET_FLAG(peer->af_flags[afi][safi], | |
4586 | PEER_FLAG_NEXTHOP_UNCHANGED); | |
4587 | } | |
4588 | } | |
4589 | ||
99819027 DS |
4590 | /* |
4591 | * If the peer is a route server client let's not | |
4592 | * muck with the nexthop on the way out the door | |
4593 | */ | |
4594 | if (flag & PEER_FLAG_RSERVER_CLIENT) { | |
4595 | if (set) | |
4596 | SET_FLAG(peer->af_flags[afi][safi], | |
4597 | PEER_FLAG_NEXTHOP_UNCHANGED); | |
4598 | else | |
4599 | UNSET_FLAG(peer->af_flags[afi][safi], | |
4600 | PEER_FLAG_NEXTHOP_UNCHANGED); | |
4601 | } | |
4602 | ||
527de3dc PM |
4603 | /* Inherit from peer-group or set/unset flags accordingly. */ |
4604 | if (peer_group_active(peer) && set == invert) | |
4605 | peer_af_flag_inherit(peer, afi, safi, flag); | |
4606 | else | |
4607 | COND_FLAG(peer->af_flags[afi][safi], flag, set); | |
d62a17ae | 4608 | |
4609 | /* Execute action when peer is established. */ | |
4610 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP) | |
feb17238 | 4611 | && peer_established(peer)) { |
d62a17ae | 4612 | if (!set && flag == PEER_FLAG_SOFT_RECONFIG) |
4613 | bgp_clear_adj_in(peer, afi, safi); | |
4614 | else { | |
4615 | if (flag == PEER_FLAG_REFLECTOR_CLIENT) | |
4616 | peer->last_reset = PEER_DOWN_RR_CLIENT_CHANGE; | |
4617 | else if (flag == PEER_FLAG_RSERVER_CLIENT) | |
4618 | peer->last_reset = PEER_DOWN_RS_CLIENT_CHANGE; | |
4619 | else if (flag == PEER_FLAG_ORF_PREFIX_SM) | |
4620 | peer->last_reset = PEER_DOWN_CAPABILITY_CHANGE; | |
4621 | else if (flag == PEER_FLAG_ORF_PREFIX_RM) | |
4622 | peer->last_reset = PEER_DOWN_CAPABILITY_CHANGE; | |
4623 | ||
4624 | peer_change_action(peer, afi, safi, action.type); | |
4625 | } | |
4626 | } | |
4627 | ||
527de3dc PM |
4628 | /* Check if handling a regular peer. */ |
4629 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
4630 | COND_FLAG(peer->af_flags_override[afi][safi], flag, | |
4631 | set != invert); | |
4632 | } else { | |
4633 | /* | |
4634 | * Update peer-group members, unless they are explicitely | |
4635 | * overriding peer-group configuration. | |
4636 | */ | |
4637 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, | |
4638 | member)) { | |
4639 | /* Skip peers with overridden configuration. */ | |
4640 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
598ce6bd PM |
4641 | flag)) |
4642 | continue; | |
4643 | ||
527de3dc PM |
4644 | /* Check if only member without group is inverted. */ |
4645 | member_invert = | |
4646 | CHECK_FLAG(member->af_flags_invert[afi][safi], | |
4647 | flag) | |
4648 | && !invert; | |
4649 | ||
4650 | /* Skip peers with equivalent configuration. */ | |
4651 | if (set != member_invert | |
4652 | && CHECK_FLAG(member->af_flags[afi][safi], flag)) | |
d62a17ae | 4653 | continue; |
4654 | ||
527de3dc PM |
4655 | if (set == member_invert |
4656 | && !CHECK_FLAG(member->af_flags[afi][safi], flag)) | |
d62a17ae | 4657 | continue; |
4658 | ||
527de3dc PM |
4659 | /* Update flag on peer-group member. */ |
4660 | COND_FLAG(member->af_flags[afi][safi], flag, | |
4661 | set != member_invert); | |
d62a17ae | 4662 | |
527de3dc | 4663 | /* Execute flag action on peer-group member. */ |
feb17238 | 4664 | if (peer_established(member)) { |
d62a17ae | 4665 | if (!set && flag == PEER_FLAG_SOFT_RECONFIG) |
527de3dc | 4666 | bgp_clear_adj_in(member, afi, safi); |
d62a17ae | 4667 | else { |
4668 | if (flag == PEER_FLAG_REFLECTOR_CLIENT) | |
527de3dc | 4669 | member->last_reset = |
d62a17ae | 4670 | PEER_DOWN_RR_CLIENT_CHANGE; |
4671 | else if (flag | |
4672 | == PEER_FLAG_RSERVER_CLIENT) | |
527de3dc | 4673 | member->last_reset = |
d62a17ae | 4674 | PEER_DOWN_RS_CLIENT_CHANGE; |
4675 | else if (flag | |
4676 | == PEER_FLAG_ORF_PREFIX_SM) | |
527de3dc | 4677 | member->last_reset = |
d62a17ae | 4678 | PEER_DOWN_CAPABILITY_CHANGE; |
4679 | else if (flag | |
4680 | == PEER_FLAG_ORF_PREFIX_RM) | |
527de3dc | 4681 | member->last_reset = |
d62a17ae | 4682 | PEER_DOWN_CAPABILITY_CHANGE; |
4683 | ||
527de3dc | 4684 | peer_change_action(member, afi, safi, |
d62a17ae | 4685 | action.type); |
4686 | } | |
4687 | } | |
4688 | } | |
4689 | } | |
4690 | ||
d62a17ae | 4691 | return 0; |
4692 | } | |
4693 | ||
d7c0a89a | 4694 | int peer_af_flag_set(struct peer *peer, afi_t afi, safi_t safi, uint32_t flag) |
d62a17ae | 4695 | { |
4696 | return peer_af_flag_modify(peer, afi, safi, flag, 1); | |
4697 | } | |
4698 | ||
d7c0a89a | 4699 | int peer_af_flag_unset(struct peer *peer, afi_t afi, safi_t safi, uint32_t flag) |
d62a17ae | 4700 | { |
4701 | return peer_af_flag_modify(peer, afi, safi, flag, 0); | |
4702 | } | |
4703 | ||
4704 | ||
3dc339cd | 4705 | void peer_tx_shutdown_message_set(struct peer *peer, const char *msg) |
d62a17ae | 4706 | { |
4707 | XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG, peer->tx_shutdown_message); | |
4708 | peer->tx_shutdown_message = | |
4709 | msg ? XSTRDUP(MTYPE_PEER_TX_SHUTDOWN_MSG, msg) : NULL; | |
d62a17ae | 4710 | } |
4711 | ||
3dc339cd | 4712 | void peer_tx_shutdown_message_unset(struct peer *peer) |
d62a17ae | 4713 | { |
4714 | XFREE(MTYPE_PEER_TX_SHUTDOWN_MSG, peer->tx_shutdown_message); | |
d62a17ae | 4715 | } |
4716 | ||
4717 | ||
4718 | /* EBGP multihop configuration. */ | |
4719 | int peer_ebgp_multihop_set(struct peer *peer, int ttl) | |
4720 | { | |
4721 | struct peer_group *group; | |
4722 | struct listnode *node, *nnode; | |
4723 | struct peer *peer1; | |
4724 | ||
4725 | if (peer->sort == BGP_PEER_IBGP || peer->conf_if) | |
4726 | return 0; | |
8ffeaddb EDP |
4727 | |
4728 | /* is there anything to do? */ | |
4729 | if (peer->ttl == ttl) | |
4730 | return 0; | |
d62a17ae | 4731 | |
4732 | /* see comment in peer_ttl_security_hops_set() */ | |
4733 | if (ttl != MAXTTL) { | |
4734 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
4735 | group = peer->group; | |
e2521429 | 4736 | if (group->conf->gtsm_hops != BGP_GTSM_HOPS_DISABLED) |
d62a17ae | 4737 | return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK; |
4738 | ||
4739 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, | |
4740 | peer1)) { | |
4741 | if (peer1->sort == BGP_PEER_IBGP) | |
4742 | continue; | |
4743 | ||
e2521429 | 4744 | if (peer1->gtsm_hops != BGP_GTSM_HOPS_DISABLED) |
d62a17ae | 4745 | return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK; |
4746 | } | |
4747 | } else { | |
e2521429 | 4748 | if (peer->gtsm_hops != BGP_GTSM_HOPS_DISABLED) |
d62a17ae | 4749 | return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK; |
4750 | } | |
4751 | } | |
4752 | ||
4753 | peer->ttl = ttl; | |
4754 | ||
4755 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
3557ed3d | 4756 | if (peer->sort != BGP_PEER_IBGP) { |
d62a17ae | 4757 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) |
4758 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4759 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4760 | else | |
4761 | bgp_session_reset(peer); | |
4762 | } | |
4763 | } else { | |
4764 | group = peer->group; | |
4765 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
4766 | if (peer->sort == BGP_PEER_IBGP) | |
4767 | continue; | |
4768 | ||
4769 | peer->ttl = group->conf->ttl; | |
4770 | ||
4771 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
4772 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4773 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4774 | else | |
4775 | bgp_session_reset(peer); | |
4776 | } | |
4777 | } | |
4778 | return 0; | |
4779 | } | |
4780 | ||
4781 | int peer_ebgp_multihop_unset(struct peer *peer) | |
4782 | { | |
4783 | struct peer_group *group; | |
4784 | struct listnode *node, *nnode; | |
4785 | ||
4786 | if (peer->sort == BGP_PEER_IBGP) | |
4787 | return 0; | |
4788 | ||
e2521429 | 4789 | if (peer->gtsm_hops != BGP_GTSM_HOPS_DISABLED && peer->ttl != MAXTTL) |
d62a17ae | 4790 | return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK; |
4791 | ||
4792 | if (peer_group_active(peer)) | |
4793 | peer->ttl = peer->group->conf->ttl; | |
4794 | else | |
a0903cd2 | 4795 | peer->ttl = BGP_DEFAULT_TTL; |
d62a17ae | 4796 | |
4797 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
4798 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
4799 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4800 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4801 | else | |
4802 | bgp_session_reset(peer); | |
4803 | } else { | |
4804 | group = peer->group; | |
4805 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
4806 | if (peer->sort == BGP_PEER_IBGP) | |
4807 | continue; | |
4808 | ||
a0903cd2 | 4809 | peer->ttl = BGP_DEFAULT_TTL; |
d62a17ae | 4810 | |
4811 | if (peer->fd >= 0) { | |
4812 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
4813 | bgp_notify_send( | |
4814 | peer, BGP_NOTIFY_CEASE, | |
4815 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4816 | else | |
4817 | bgp_session_reset(peer); | |
4818 | } | |
4819 | } | |
4820 | } | |
4821 | return 0; | |
4822 | } | |
4823 | ||
4824 | /* Neighbor description. */ | |
3dc339cd | 4825 | void peer_description_set(struct peer *peer, const char *desc) |
d62a17ae | 4826 | { |
0a22ddfb | 4827 | XFREE(MTYPE_PEER_DESC, peer->desc); |
d62a17ae | 4828 | |
4829 | peer->desc = XSTRDUP(MTYPE_PEER_DESC, desc); | |
d62a17ae | 4830 | } |
4831 | ||
3dc339cd | 4832 | void peer_description_unset(struct peer *peer) |
d62a17ae | 4833 | { |
0a22ddfb | 4834 | XFREE(MTYPE_PEER_DESC, peer->desc); |
d62a17ae | 4835 | } |
4836 | ||
4837 | /* Neighbor update-source. */ | |
4838 | int peer_update_source_if_set(struct peer *peer, const char *ifname) | |
4839 | { | |
a14810f4 | 4840 | struct peer *member; |
d62a17ae | 4841 | struct listnode *node, *nnode; |
4842 | ||
a14810f4 PM |
4843 | /* Set flag and configuration on peer. */ |
4844 | peer_flag_set(peer, PEER_FLAG_UPDATE_SOURCE); | |
d62a17ae | 4845 | if (peer->update_if) { |
a14810f4 | 4846 | if (strcmp(peer->update_if, ifname) == 0) |
d62a17ae | 4847 | return 0; |
d62a17ae | 4848 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer->update_if); |
d62a17ae | 4849 | } |
d62a17ae | 4850 | peer->update_if = XSTRDUP(MTYPE_PEER_UPDATE_SOURCE, ifname); |
a14810f4 PM |
4851 | sockunion_free(peer->update_source); |
4852 | peer->update_source = NULL; | |
d62a17ae | 4853 | |
a14810f4 | 4854 | /* Check if handling a regular peer. */ |
d62a17ae | 4855 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 4856 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 4857 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
4858 | peer->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
4859 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4860 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4861 | } else | |
4862 | bgp_session_reset(peer); | |
a14810f4 PM |
4863 | |
4864 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 4865 | return 0; |
4866 | } | |
4867 | ||
a14810f4 PM |
4868 | /* |
4869 | * Set flag and configuration on all peer-group members, unless they are | |
4870 | * explicitely overriding peer-group configuration. | |
4871 | */ | |
4872 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
4873 | /* Skip peers with overridden configuration. */ | |
4874 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_UPDATE_SOURCE)) | |
4875 | continue; | |
d62a17ae | 4876 | |
a14810f4 PM |
4877 | /* Skip peers with the same configuration. */ |
4878 | if (member->update_if) { | |
4879 | if (strcmp(member->update_if, ifname) == 0) | |
4880 | continue; | |
4881 | XFREE(MTYPE_PEER_UPDATE_SOURCE, member->update_if); | |
d62a17ae | 4882 | } |
4883 | ||
a14810f4 PM |
4884 | /* Set flag and configuration on peer-group member. */ |
4885 | SET_FLAG(member->flags, PEER_FLAG_UPDATE_SOURCE); | |
4886 | member->update_if = XSTRDUP(MTYPE_PEER_UPDATE_SOURCE, ifname); | |
4887 | sockunion_free(member->update_source); | |
4888 | member->update_source = NULL; | |
4889 | ||
4890 | /* Send notification or reset peer depending on state. */ | |
4891 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) { | |
4892 | member->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
4893 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 4894 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
4895 | } else | |
a14810f4 | 4896 | bgp_session_reset(member); |
d62a17ae | 4897 | } |
a14810f4 | 4898 | |
d62a17ae | 4899 | return 0; |
4900 | } | |
4901 | ||
4902 | int peer_update_source_addr_set(struct peer *peer, const union sockunion *su) | |
4903 | { | |
a14810f4 | 4904 | struct peer *member; |
d62a17ae | 4905 | struct listnode *node, *nnode; |
4906 | ||
a14810f4 PM |
4907 | /* Set flag and configuration on peer. */ |
4908 | peer_flag_set(peer, PEER_FLAG_UPDATE_SOURCE); | |
d62a17ae | 4909 | if (peer->update_source) { |
a14810f4 | 4910 | if (sockunion_cmp(peer->update_source, su) == 0) |
d62a17ae | 4911 | return 0; |
4912 | sockunion_free(peer->update_source); | |
d62a17ae | 4913 | } |
d62a17ae | 4914 | peer->update_source = sockunion_dup(su); |
a14810f4 | 4915 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer->update_if); |
d62a17ae | 4916 | |
a14810f4 | 4917 | /* Check if handling a regular peer. */ |
d62a17ae | 4918 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 4919 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 4920 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
4921 | peer->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
4922 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4923 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4924 | } else | |
4925 | bgp_session_reset(peer); | |
a14810f4 PM |
4926 | |
4927 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 4928 | return 0; |
4929 | } | |
4930 | ||
a14810f4 PM |
4931 | /* |
4932 | * Set flag and configuration on all peer-group members, unless they are | |
4933 | * explicitely overriding peer-group configuration. | |
4934 | */ | |
4935 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
4936 | /* Skip peers with overridden configuration. */ | |
4937 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_UPDATE_SOURCE)) | |
4938 | continue; | |
d62a17ae | 4939 | |
a14810f4 PM |
4940 | /* Skip peers with the same configuration. */ |
4941 | if (member->update_source) { | |
4942 | if (sockunion_cmp(member->update_source, su) == 0) | |
4943 | continue; | |
4944 | sockunion_free(member->update_source); | |
d62a17ae | 4945 | } |
4946 | ||
a14810f4 PM |
4947 | /* Set flag and configuration on peer-group member. */ |
4948 | SET_FLAG(member->flags, PEER_FLAG_UPDATE_SOURCE); | |
4949 | member->update_source = sockunion_dup(su); | |
4950 | XFREE(MTYPE_PEER_UPDATE_SOURCE, member->update_if); | |
4951 | ||
4952 | /* Send notification or reset peer depending on state. */ | |
4953 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) { | |
4954 | member->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
4955 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 4956 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
4957 | } else | |
a14810f4 | 4958 | bgp_session_reset(member); |
d62a17ae | 4959 | } |
a14810f4 | 4960 | |
d62a17ae | 4961 | return 0; |
4962 | } | |
4963 | ||
4964 | int peer_update_source_unset(struct peer *peer) | |
4965 | { | |
a14810f4 | 4966 | struct peer *member; |
d62a17ae | 4967 | struct listnode *node, *nnode; |
4968 | ||
a14810f4 | 4969 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_UPDATE_SOURCE)) |
d62a17ae | 4970 | return 0; |
4971 | ||
a14810f4 PM |
4972 | /* Inherit configuration from peer-group if peer is member. */ |
4973 | if (peer_group_active(peer)) { | |
4974 | peer_flag_inherit(peer, PEER_FLAG_UPDATE_SOURCE); | |
4975 | PEER_SU_ATTR_INHERIT(peer, peer->group, update_source); | |
4976 | PEER_STR_ATTR_INHERIT(peer, peer->group, update_if, | |
4977 | MTYPE_PEER_UPDATE_SOURCE); | |
4978 | } else { | |
4979 | /* Otherwise remove flag and configuration from peer. */ | |
4980 | peer_flag_unset(peer, PEER_FLAG_UPDATE_SOURCE); | |
d62a17ae | 4981 | sockunion_free(peer->update_source); |
4982 | peer->update_source = NULL; | |
d62a17ae | 4983 | XFREE(MTYPE_PEER_UPDATE_SOURCE, peer->update_if); |
d62a17ae | 4984 | } |
4985 | ||
a14810f4 | 4986 | /* Check if handling a regular peer. */ |
d62a17ae | 4987 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 4988 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 4989 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
4990 | peer->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
4991 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
4992 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
4993 | } else | |
4994 | bgp_session_reset(peer); | |
a14810f4 PM |
4995 | |
4996 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 4997 | return 0; |
4998 | } | |
4999 | ||
a14810f4 PM |
5000 | /* |
5001 | * Set flag and configuration on all peer-group members, unless they are | |
5002 | * explicitely overriding peer-group configuration. | |
5003 | */ | |
5004 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5005 | /* Skip peers with overridden configuration. */ | |
5006 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_UPDATE_SOURCE)) | |
d62a17ae | 5007 | continue; |
5008 | ||
a14810f4 PM |
5009 | /* Skip peers with the same configuration. */ |
5010 | if (!CHECK_FLAG(member->flags, PEER_FLAG_UPDATE_SOURCE) | |
5011 | && !member->update_source && !member->update_if) | |
5012 | continue; | |
d62a17ae | 5013 | |
a14810f4 PM |
5014 | /* Remove flag and configuration on peer-group member. */ |
5015 | UNSET_FLAG(member->flags, PEER_FLAG_UPDATE_SOURCE); | |
5016 | sockunion_free(member->update_source); | |
5017 | member->update_source = NULL; | |
5018 | XFREE(MTYPE_PEER_UPDATE_SOURCE, member->update_if); | |
5019 | ||
5020 | /* Send notification or reset peer depending on state. */ | |
5021 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) { | |
5022 | member->last_reset = PEER_DOWN_UPDATE_SOURCE_CHANGE; | |
5023 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 5024 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
5025 | } else | |
a14810f4 | 5026 | bgp_session_reset(member); |
d62a17ae | 5027 | } |
a14810f4 | 5028 | |
d62a17ae | 5029 | return 0; |
5030 | } | |
5031 | ||
5032 | int peer_default_originate_set(struct peer *peer, afi_t afi, safi_t safi, | |
1de27621 | 5033 | const char *rmap, struct route_map *route_map) |
d62a17ae | 5034 | { |
598ce6bd | 5035 | struct peer *member; |
d62a17ae | 5036 | struct listnode *node, *nnode; |
5037 | ||
598ce6bd PM |
5038 | /* Set flag and configuration on peer. */ |
5039 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_DEFAULT_ORIGINATE); | |
5040 | if (rmap) { | |
5041 | if (!peer->default_rmap[afi][safi].name | |
5042 | || strcmp(rmap, peer->default_rmap[afi][safi].name) != 0) { | |
d62a17ae | 5043 | if (peer->default_rmap[afi][safi].name) |
5044 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
5045 | peer->default_rmap[afi][safi].name); | |
598ce6bd | 5046 | |
b4897fa5 | 5047 | route_map_counter_decrement(peer->default_rmap[afi][safi].map); |
d62a17ae | 5048 | peer->default_rmap[afi][safi].name = |
5049 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap); | |
1de27621 | 5050 | peer->default_rmap[afi][safi].map = route_map; |
b4897fa5 | 5051 | route_map_counter_increment(route_map); |
d62a17ae | 5052 | } |
598ce6bd PM |
5053 | } else if (!rmap) { |
5054 | if (peer->default_rmap[afi][safi].name) | |
5055 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
5056 | peer->default_rmap[afi][safi].name); | |
5057 | ||
b4897fa5 | 5058 | route_map_counter_decrement(peer->default_rmap[afi][safi].map); |
598ce6bd PM |
5059 | peer->default_rmap[afi][safi].name = NULL; |
5060 | peer->default_rmap[afi][safi].map = NULL; | |
d62a17ae | 5061 | } |
5062 | ||
598ce6bd | 5063 | /* Check if handling a regular peer. */ |
d62a17ae | 5064 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
598ce6bd | 5065 | /* Update peer route announcements. */ |
feb17238 | 5066 | if (peer_established(peer) && peer->afc_nego[afi][safi]) { |
d62a17ae | 5067 | update_group_adjust_peer(peer_af_find(peer, afi, safi)); |
5068 | bgp_default_originate(peer, afi, safi, 0); | |
5069 | bgp_announce_route(peer, afi, safi); | |
5070 | } | |
598ce6bd PM |
5071 | |
5072 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 5073 | return 0; |
5074 | } | |
5075 | ||
598ce6bd PM |
5076 | /* |
5077 | * Set flag and configuration on all peer-group members, unless they are | |
5078 | * explicitely overriding peer-group configuration. | |
5079 | */ | |
5080 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5081 | /* Skip peers with overridden configuration. */ | |
5082 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
5083 | PEER_FLAG_DEFAULT_ORIGINATE)) | |
5084 | continue; | |
d62a17ae | 5085 | |
598ce6bd PM |
5086 | /* Set flag and configuration on peer-group member. */ |
5087 | SET_FLAG(member->af_flags[afi][safi], | |
5088 | PEER_FLAG_DEFAULT_ORIGINATE); | |
d62a17ae | 5089 | if (rmap) { |
598ce6bd | 5090 | if (member->default_rmap[afi][safi].name) |
d62a17ae | 5091 | XFREE(MTYPE_ROUTE_MAP_NAME, |
598ce6bd | 5092 | member->default_rmap[afi][safi].name); |
b4897fa5 | 5093 | route_map_counter_decrement( |
5094 | member->default_rmap[afi][safi].map); | |
598ce6bd | 5095 | member->default_rmap[afi][safi].name = |
d62a17ae | 5096 | XSTRDUP(MTYPE_ROUTE_MAP_NAME, rmap); |
1de27621 | 5097 | member->default_rmap[afi][safi].map = route_map; |
b4897fa5 | 5098 | route_map_counter_increment(route_map); |
d62a17ae | 5099 | } |
5100 | ||
598ce6bd | 5101 | /* Update peer route announcements. */ |
feb17238 | 5102 | if (peer_established(member) && member->afc_nego[afi][safi]) { |
598ce6bd PM |
5103 | update_group_adjust_peer( |
5104 | peer_af_find(member, afi, safi)); | |
5105 | bgp_default_originate(member, afi, safi, 0); | |
5106 | bgp_announce_route(member, afi, safi); | |
d62a17ae | 5107 | } |
5108 | } | |
598ce6bd | 5109 | |
d62a17ae | 5110 | return 0; |
5111 | } | |
5112 | ||
5113 | int peer_default_originate_unset(struct peer *peer, afi_t afi, safi_t safi) | |
5114 | { | |
598ce6bd | 5115 | struct peer *member; |
d62a17ae | 5116 | struct listnode *node, *nnode; |
5117 | ||
598ce6bd PM |
5118 | /* Inherit configuration from peer-group if peer is member. */ |
5119 | if (peer_group_active(peer)) { | |
5120 | peer_af_flag_inherit(peer, afi, safi, | |
5121 | PEER_FLAG_DEFAULT_ORIGINATE); | |
e7103a96 PM |
5122 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
5123 | default_rmap[afi][safi].name, | |
5124 | MTYPE_ROUTE_MAP_NAME); | |
5125 | PEER_ATTR_INHERIT(peer, peer->group, | |
5126 | default_rmap[afi][safi].map); | |
598ce6bd PM |
5127 | } else { |
5128 | /* Otherwise remove flag and configuration from peer. */ | |
5129 | peer_af_flag_unset(peer, afi, safi, | |
5130 | PEER_FLAG_DEFAULT_ORIGINATE); | |
d62a17ae | 5131 | if (peer->default_rmap[afi][safi].name) |
5132 | XFREE(MTYPE_ROUTE_MAP_NAME, | |
5133 | peer->default_rmap[afi][safi].name); | |
b4897fa5 | 5134 | route_map_counter_decrement(peer->default_rmap[afi][safi].map); |
d62a17ae | 5135 | peer->default_rmap[afi][safi].name = NULL; |
5136 | peer->default_rmap[afi][safi].map = NULL; | |
5137 | } | |
5138 | ||
598ce6bd | 5139 | /* Check if handling a regular peer. */ |
d62a17ae | 5140 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
598ce6bd | 5141 | /* Update peer route announcements. */ |
feb17238 | 5142 | if (peer_established(peer) && peer->afc_nego[afi][safi]) { |
d62a17ae | 5143 | update_group_adjust_peer(peer_af_find(peer, afi, safi)); |
5144 | bgp_default_originate(peer, afi, safi, 1); | |
5145 | bgp_announce_route(peer, afi, safi); | |
5146 | } | |
598ce6bd PM |
5147 | |
5148 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 5149 | return 0; |
5150 | } | |
5151 | ||
598ce6bd PM |
5152 | /* |
5153 | * Remove flag and configuration from all peer-group members, unless | |
5154 | * they are explicitely overriding peer-group configuration. | |
5155 | */ | |
5156 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5157 | /* Skip peers with overridden configuration. */ | |
5158 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
5159 | PEER_FLAG_DEFAULT_ORIGINATE)) | |
5160 | continue; | |
5161 | ||
5162 | /* Remove flag and configuration on peer-group member. */ | |
66de9680 | 5163 | UNSET_FLAG(member->af_flags[afi][safi], |
d62a17ae | 5164 | PEER_FLAG_DEFAULT_ORIGINATE); |
66de9680 | 5165 | if (member->default_rmap[afi][safi].name) |
d62a17ae | 5166 | XFREE(MTYPE_ROUTE_MAP_NAME, |
66de9680 S |
5167 | member->default_rmap[afi][safi].name); |
5168 | route_map_counter_decrement(member->default_rmap[afi][safi].map); | |
5169 | member->default_rmap[afi][safi].name = NULL; | |
5170 | member->default_rmap[afi][safi].map = NULL; | |
d62a17ae | 5171 | |
598ce6bd | 5172 | /* Update peer route announcements. */ |
feb17238 | 5173 | if (peer_established(member) && member->afc_nego[afi][safi]) { |
66de9680 S |
5174 | update_group_adjust_peer(peer_af_find(member, afi, safi)); |
5175 | bgp_default_originate(member, afi, safi, 1); | |
5176 | bgp_announce_route(member, afi, safi); | |
d62a17ae | 5177 | } |
5178 | } | |
598ce6bd | 5179 | |
d62a17ae | 5180 | return 0; |
5181 | } | |
5182 | ||
3dc339cd | 5183 | void peer_port_set(struct peer *peer, uint16_t port) |
d62a17ae | 5184 | { |
5185 | peer->port = port; | |
d62a17ae | 5186 | } |
5187 | ||
3dc339cd | 5188 | void peer_port_unset(struct peer *peer) |
d62a17ae | 5189 | { |
5190 | peer->port = BGP_PORT_DEFAULT; | |
d62a17ae | 5191 | } |
5192 | ||
4ab46701 AR |
5193 | /* Set the TCP-MSS value in the peer structure, |
5194 | * This gets applied only after connection reset | |
5195 | * So this value will be used in bgp_connect. | |
5196 | */ | |
5197 | void peer_tcp_mss_set(struct peer *peer, uint32_t tcp_mss) | |
5198 | { | |
5199 | peer->tcp_mss = tcp_mss; | |
5200 | SET_FLAG(peer->flags, PEER_FLAG_TCP_MSS); | |
5201 | } | |
5202 | ||
5203 | /* Reset the TCP-MSS value in the peer structure, | |
5204 | * This gets applied only after connection reset | |
5205 | * So this value will be used in bgp_connect. | |
5206 | */ | |
5207 | void peer_tcp_mss_unset(struct peer *peer) | |
5208 | { | |
5209 | UNSET_FLAG(peer->flags, PEER_FLAG_TCP_MSS); | |
5210 | peer->tcp_mss = 0; | |
5211 | } | |
5212 | ||
d62a17ae | 5213 | /* |
5214 | * Helper function that is called after the name of the policy | |
5215 | * being used by a peer has changed (AF specific). Automatically | |
5216 | * initiates inbound or outbound processing as needed. | |
5217 | */ | |
5218 | static void peer_on_policy_change(struct peer *peer, afi_t afi, safi_t safi, | |
5219 | int outbound) | |
5220 | { | |
5221 | if (outbound) { | |
5222 | update_group_adjust_peer(peer_af_find(peer, afi, safi)); | |
feb17238 | 5223 | if (peer_established(peer)) |
d62a17ae | 5224 | bgp_announce_route(peer, afi, safi); |
5225 | } else { | |
feb17238 | 5226 | if (!peer_established(peer)) |
d62a17ae | 5227 | return; |
5228 | ||
5229 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
5230 | PEER_FLAG_SOFT_RECONFIG)) | |
5231 | bgp_soft_reconfig_in(peer, afi, safi); | |
5232 | else if (CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_OLD_RCV) | |
5233 | || CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_NEW_RCV)) | |
9af52ccf DA |
5234 | bgp_route_refresh_send(peer, afi, safi, 0, 0, 0, |
5235 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 5236 | } |
5237 | } | |
5238 | ||
5239 | ||
5240 | /* neighbor weight. */ | |
d7c0a89a | 5241 | int peer_weight_set(struct peer *peer, afi_t afi, safi_t safi, uint16_t weight) |
d62a17ae | 5242 | { |
598ce6bd | 5243 | struct peer *member; |
d62a17ae | 5244 | struct listnode *node, *nnode; |
5245 | ||
598ce6bd PM |
5246 | /* Set flag and configuration on peer. */ |
5247 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_WEIGHT); | |
d62a17ae | 5248 | if (peer->weight[afi][safi] != weight) { |
5249 | peer->weight[afi][safi] = weight; | |
d62a17ae | 5250 | peer_on_policy_change(peer, afi, safi, 0); |
5251 | } | |
5252 | ||
598ce6bd | 5253 | /* Skip peer-group mechanics for regular peers. */ |
d62a17ae | 5254 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) |
5255 | return 0; | |
5256 | ||
598ce6bd PM |
5257 | /* |
5258 | * Set flag and configuration on all peer-group members, unless they are | |
5259 | * explicitely overriding peer-group configuration. | |
5260 | */ | |
5261 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5262 | /* Skip peers with overridden configuration. */ | |
5263 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
5264 | PEER_FLAG_WEIGHT)) | |
5265 | continue; | |
5266 | ||
5267 | /* Set flag and configuration on peer-group member. */ | |
5268 | SET_FLAG(member->af_flags[afi][safi], PEER_FLAG_WEIGHT); | |
5269 | if (member->weight[afi][safi] != weight) { | |
5270 | member->weight[afi][safi] = weight; | |
5271 | peer_on_policy_change(member, afi, safi, 0); | |
d62a17ae | 5272 | } |
5273 | } | |
598ce6bd | 5274 | |
d62a17ae | 5275 | return 0; |
5276 | } | |
5277 | ||
5278 | int peer_weight_unset(struct peer *peer, afi_t afi, safi_t safi) | |
5279 | { | |
598ce6bd | 5280 | struct peer *member; |
d62a17ae | 5281 | struct listnode *node, *nnode; |
5282 | ||
598ce6bd PM |
5283 | if (!CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_WEIGHT)) |
5284 | return 0; | |
5285 | ||
5286 | /* Inherit configuration from peer-group if peer is member. */ | |
d62a17ae | 5287 | if (peer_group_active(peer)) { |
598ce6bd | 5288 | peer_af_flag_inherit(peer, afi, safi, PEER_FLAG_WEIGHT); |
e7103a96 | 5289 | PEER_ATTR_INHERIT(peer, peer->group, weight[afi][safi]); |
d62a17ae | 5290 | |
598ce6bd PM |
5291 | peer_on_policy_change(peer, afi, safi, 0); |
5292 | return 0; | |
d62a17ae | 5293 | } |
5294 | ||
598ce6bd PM |
5295 | /* Remove flag and configuration from peer. */ |
5296 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_WEIGHT); | |
5297 | peer->weight[afi][safi] = 0; | |
5298 | peer_on_policy_change(peer, afi, safi, 0); | |
d62a17ae | 5299 | |
598ce6bd PM |
5300 | /* Skip peer-group mechanics for regular peers. */ |
5301 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5302 | return 0; | |
d62a17ae | 5303 | |
598ce6bd PM |
5304 | /* |
5305 | * Remove flag and configuration from all peer-group members, unless | |
5306 | * they are explicitely overriding peer-group configuration. | |
5307 | */ | |
5308 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5309 | /* Skip peers with overridden configuration. */ | |
5310 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
5311 | PEER_FLAG_WEIGHT)) | |
5312 | continue; | |
5313 | ||
5314 | /* Skip peers where flag is already disabled. */ | |
5315 | if (!CHECK_FLAG(member->af_flags[afi][safi], PEER_FLAG_WEIGHT)) | |
5316 | continue; | |
5317 | ||
5318 | /* Remove flag and configuration on peer-group member. */ | |
5319 | UNSET_FLAG(member->af_flags[afi][safi], PEER_FLAG_WEIGHT); | |
5320 | member->weight[afi][safi] = 0; | |
5321 | peer_on_policy_change(member, afi, safi, 0); | |
d62a17ae | 5322 | } |
598ce6bd | 5323 | |
d62a17ae | 5324 | return 0; |
5325 | } | |
5326 | ||
d7c0a89a | 5327 | int peer_timers_set(struct peer *peer, uint32_t keepalive, uint32_t holdtime) |
d62a17ae | 5328 | { |
b90a8e13 | 5329 | struct peer *member; |
d62a17ae | 5330 | struct listnode *node, *nnode; |
5331 | ||
48e1932b | 5332 | if (keepalive > UINT16_MAX) |
d62a17ae | 5333 | return BGP_ERR_INVALID_VALUE; |
5334 | ||
48e1932b | 5335 | if (holdtime > UINT16_MAX) |
d62a17ae | 5336 | return BGP_ERR_INVALID_VALUE; |
5337 | ||
d62a17ae | 5338 | if (holdtime < 3 && holdtime != 0) |
5339 | return BGP_ERR_INVALID_VALUE; | |
5340 | ||
b90a8e13 PM |
5341 | /* Set flag and configuration on peer. */ |
5342 | peer_flag_set(peer, PEER_FLAG_TIMER); | |
d62a17ae | 5343 | peer->holdtime = holdtime; |
5344 | peer->keepalive = (keepalive < holdtime / 3 ? keepalive : holdtime / 3); | |
5345 | ||
b90a8e13 PM |
5346 | /* Skip peer-group mechanics for regular peers. */ |
5347 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5348 | return 0; | |
d25e4efc | 5349 | |
b90a8e13 PM |
5350 | /* |
5351 | * Set flag and configuration on all peer-group members, unless they are | |
5352 | * explicitely overriding peer-group configuration. | |
5353 | */ | |
5354 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5355 | /* Skip peers with overridden configuration. */ | |
5356 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_TIMER)) | |
5357 | continue; | |
d25e4efc | 5358 | |
b90a8e13 PM |
5359 | /* Set flag and configuration on peer-group member. */ |
5360 | SET_FLAG(member->flags, PEER_FLAG_TIMER); | |
b28a12e6 | 5361 | PEER_ATTR_INHERIT(member, peer->group, holdtime); |
5362 | PEER_ATTR_INHERIT(member, peer->group, keepalive); | |
d62a17ae | 5363 | } |
d25e4efc | 5364 | |
d62a17ae | 5365 | return 0; |
5366 | } | |
5367 | ||
5368 | int peer_timers_unset(struct peer *peer) | |
5369 | { | |
b90a8e13 | 5370 | struct peer *member; |
d62a17ae | 5371 | struct listnode *node, *nnode; |
5372 | ||
b90a8e13 PM |
5373 | /* Inherit configuration from peer-group if peer is member. */ |
5374 | if (peer_group_active(peer)) { | |
5375 | peer_flag_inherit(peer, PEER_FLAG_TIMER); | |
5376 | PEER_ATTR_INHERIT(peer, peer->group, holdtime); | |
5377 | PEER_ATTR_INHERIT(peer, peer->group, keepalive); | |
5378 | } else { | |
5379 | /* Otherwise remove flag and configuration from peer. */ | |
5380 | peer_flag_unset(peer, PEER_FLAG_TIMER); | |
d25e4efc | 5381 | peer->holdtime = 0; |
b90a8e13 PM |
5382 | peer->keepalive = 0; |
5383 | } | |
d25e4efc | 5384 | |
b90a8e13 PM |
5385 | /* Skip peer-group mechanics for regular peers. */ |
5386 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5387 | return 0; | |
5388 | ||
5389 | /* | |
5390 | * Remove flag and configuration from all peer-group members, unless | |
5391 | * they are explicitely overriding peer-group configuration. | |
5392 | */ | |
5393 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5394 | /* Skip peers with overridden configuration. */ | |
5395 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_TIMER)) | |
5396 | continue; | |
d25e4efc | 5397 | |
b90a8e13 PM |
5398 | /* Remove flag and configuration on peer-group member. */ |
5399 | UNSET_FLAG(member->flags, PEER_FLAG_TIMER); | |
5400 | member->holdtime = 0; | |
5401 | member->keepalive = 0; | |
d62a17ae | 5402 | } |
5403 | ||
5404 | return 0; | |
5405 | } | |
5406 | ||
d7c0a89a | 5407 | int peer_timers_connect_set(struct peer *peer, uint32_t connect) |
d62a17ae | 5408 | { |
b90a8e13 | 5409 | struct peer *member; |
d62a17ae | 5410 | struct listnode *node, *nnode; |
5411 | ||
48e1932b | 5412 | if (connect > UINT16_MAX) |
d62a17ae | 5413 | return BGP_ERR_INVALID_VALUE; |
5414 | ||
b90a8e13 PM |
5415 | /* Set flag and configuration on peer. */ |
5416 | peer_flag_set(peer, PEER_FLAG_TIMER_CONNECT); | |
d62a17ae | 5417 | peer->connect = connect; |
d62a17ae | 5418 | peer->v_connect = connect; |
5419 | ||
b90a8e13 | 5420 | /* Skip peer-group mechanics for regular peers. */ |
91de6fa2 | 5421 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
feb17238 | 5422 | if (!peer_established(peer)) { |
91de6fa2 | 5423 | if (peer_active(peer)) |
5424 | BGP_EVENT_ADD(peer, BGP_Stop); | |
5425 | BGP_EVENT_ADD(peer, BGP_Start); | |
5426 | } | |
d62a17ae | 5427 | return 0; |
91de6fa2 | 5428 | } |
b90a8e13 PM |
5429 | /* |
5430 | * Set flag and configuration on all peer-group members, unless they are | |
5431 | * explicitely overriding peer-group configuration. | |
5432 | */ | |
5433 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5434 | /* Skip peers with overridden configuration. */ | |
5435 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_TIMER_CONNECT)) | |
5436 | continue; | |
5437 | ||
5438 | /* Set flag and configuration on peer-group member. */ | |
5439 | SET_FLAG(member->flags, PEER_FLAG_TIMER_CONNECT); | |
5440 | member->connect = connect; | |
5441 | member->v_connect = connect; | |
91de6fa2 | 5442 | |
feb17238 | 5443 | if (!peer_established(member)) { |
91de6fa2 | 5444 | if (peer_active(member)) |
5445 | BGP_EVENT_ADD(member, BGP_Stop); | |
5446 | BGP_EVENT_ADD(member, BGP_Start); | |
5447 | } | |
d62a17ae | 5448 | } |
b90a8e13 | 5449 | |
d62a17ae | 5450 | return 0; |
5451 | } | |
5452 | ||
5453 | int peer_timers_connect_unset(struct peer *peer) | |
5454 | { | |
b90a8e13 | 5455 | struct peer *member; |
d62a17ae | 5456 | struct listnode *node, *nnode; |
5457 | ||
b90a8e13 PM |
5458 | /* Inherit configuration from peer-group if peer is member. */ |
5459 | if (peer_group_active(peer)) { | |
5460 | peer_flag_inherit(peer, PEER_FLAG_TIMER_CONNECT); | |
5461 | PEER_ATTR_INHERIT(peer, peer->group, connect); | |
5462 | } else { | |
5463 | /* Otherwise remove flag and configuration from peer. */ | |
5464 | peer_flag_unset(peer, PEER_FLAG_TIMER_CONNECT); | |
5465 | peer->connect = 0; | |
5466 | } | |
d62a17ae | 5467 | |
b90a8e13 PM |
5468 | /* Set timer with fallback to default value. */ |
5469 | if (peer->connect) | |
5470 | peer->v_connect = peer->connect; | |
5471 | else | |
5d5393b9 | 5472 | peer->v_connect = peer->bgp->default_connect_retry; |
d62a17ae | 5473 | |
b90a8e13 | 5474 | /* Skip peer-group mechanics for regular peers. */ |
91de6fa2 | 5475 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
feb17238 | 5476 | if (!peer_established(peer)) { |
91de6fa2 | 5477 | if (peer_active(peer)) |
5478 | BGP_EVENT_ADD(peer, BGP_Stop); | |
5479 | BGP_EVENT_ADD(peer, BGP_Start); | |
5480 | } | |
d62a17ae | 5481 | return 0; |
91de6fa2 | 5482 | } |
b90a8e13 PM |
5483 | /* |
5484 | * Remove flag and configuration from all peer-group members, unless | |
5485 | * they are explicitely overriding peer-group configuration. | |
5486 | */ | |
5487 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5488 | /* Skip peers with overridden configuration. */ | |
5489 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_TIMER_CONNECT)) | |
5490 | continue; | |
5491 | ||
5492 | /* Remove flag and configuration on peer-group member. */ | |
5493 | UNSET_FLAG(member->flags, PEER_FLAG_TIMER_CONNECT); | |
5494 | member->connect = 0; | |
5d5393b9 | 5495 | member->v_connect = peer->bgp->default_connect_retry; |
91de6fa2 | 5496 | |
feb17238 | 5497 | if (!peer_established(member)) { |
91de6fa2 | 5498 | if (peer_active(member)) |
5499 | BGP_EVENT_ADD(member, BGP_Stop); | |
5500 | BGP_EVENT_ADD(member, BGP_Start); | |
5501 | } | |
d62a17ae | 5502 | } |
b90a8e13 | 5503 | |
d62a17ae | 5504 | return 0; |
5505 | } | |
5506 | ||
d7c0a89a | 5507 | int peer_advertise_interval_set(struct peer *peer, uint32_t routeadv) |
d62a17ae | 5508 | { |
b90a8e13 | 5509 | struct peer *member; |
d62a17ae | 5510 | struct listnode *node, *nnode; |
5511 | ||
5512 | if (routeadv > 600) | |
5513 | return BGP_ERR_INVALID_VALUE; | |
5514 | ||
b90a8e13 PM |
5515 | /* Set flag and configuration on peer. */ |
5516 | peer_flag_set(peer, PEER_FLAG_ROUTEADV); | |
d62a17ae | 5517 | peer->routeadv = routeadv; |
5518 | peer->v_routeadv = routeadv; | |
5519 | ||
b90a8e13 | 5520 | /* Check if handling a regular peer. */ |
d62a17ae | 5521 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
b90a8e13 | 5522 | /* Update peer route announcements. */ |
d62a17ae | 5523 | update_group_adjust_peer_afs(peer); |
feb17238 | 5524 | if (peer_established(peer)) |
d62a17ae | 5525 | bgp_announce_route_all(peer); |
b90a8e13 PM |
5526 | |
5527 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 5528 | return 0; |
5529 | } | |
5530 | ||
b90a8e13 PM |
5531 | /* |
5532 | * Set flag and configuration on all peer-group members, unless they are | |
5533 | * explicitely overriding peer-group configuration. | |
5534 | */ | |
5535 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5536 | /* Skip peers with overridden configuration. */ | |
5537 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_ROUTEADV)) | |
5538 | continue; | |
5539 | ||
5540 | /* Set flag and configuration on peer-group member. */ | |
5541 | SET_FLAG(member->flags, PEER_FLAG_ROUTEADV); | |
5542 | member->routeadv = routeadv; | |
5543 | member->v_routeadv = routeadv; | |
5544 | ||
5545 | /* Update peer route announcements. */ | |
5546 | update_group_adjust_peer_afs(member); | |
feb17238 | 5547 | if (peer_established(member)) |
b90a8e13 | 5548 | bgp_announce_route_all(member); |
d62a17ae | 5549 | } |
5550 | ||
5551 | return 0; | |
5552 | } | |
5553 | ||
5554 | int peer_advertise_interval_unset(struct peer *peer) | |
5555 | { | |
b90a8e13 | 5556 | struct peer *member; |
d62a17ae | 5557 | struct listnode *node, *nnode; |
5558 | ||
b90a8e13 PM |
5559 | /* Inherit configuration from peer-group if peer is member. */ |
5560 | if (peer_group_active(peer)) { | |
5561 | peer_flag_inherit(peer, PEER_FLAG_ROUTEADV); | |
5562 | PEER_ATTR_INHERIT(peer, peer->group, routeadv); | |
5563 | } else { | |
5564 | /* Otherwise remove flag and configuration from peer. */ | |
5565 | peer_flag_unset(peer, PEER_FLAG_ROUTEADV); | |
5566 | peer->routeadv = 0; | |
5567 | } | |
d62a17ae | 5568 | |
b90a8e13 PM |
5569 | /* Set timer with fallback to default value. */ |
5570 | if (peer->routeadv) | |
5571 | peer->v_routeadv = peer->routeadv; | |
d62a17ae | 5572 | else |
b90a8e13 PM |
5573 | peer->v_routeadv = (peer->sort == BGP_PEER_IBGP) |
5574 | ? BGP_DEFAULT_IBGP_ROUTEADV | |
5575 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
d62a17ae | 5576 | |
b90a8e13 | 5577 | /* Check if handling a regular peer. */ |
d62a17ae | 5578 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
b90a8e13 | 5579 | /* Update peer route announcements. */ |
d62a17ae | 5580 | update_group_adjust_peer_afs(peer); |
feb17238 | 5581 | if (peer_established(peer)) |
d62a17ae | 5582 | bgp_announce_route_all(peer); |
b90a8e13 PM |
5583 | |
5584 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 5585 | return 0; |
5586 | } | |
5587 | ||
b90a8e13 PM |
5588 | /* |
5589 | * Remove flag and configuration from all peer-group members, unless | |
5590 | * they are explicitely overriding peer-group configuration. | |
5591 | */ | |
5592 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5593 | /* Skip peers with overridden configuration. */ | |
5594 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_ROUTEADV)) | |
5595 | continue; | |
d62a17ae | 5596 | |
b90a8e13 PM |
5597 | /* Remove flag and configuration on peer-group member. */ |
5598 | UNSET_FLAG(member->flags, PEER_FLAG_ROUTEADV); | |
5599 | member->routeadv = 0; | |
5600 | member->v_routeadv = (member->sort == BGP_PEER_IBGP) | |
5601 | ? BGP_DEFAULT_IBGP_ROUTEADV | |
5602 | : BGP_DEFAULT_EBGP_ROUTEADV; | |
d62a17ae | 5603 | |
b90a8e13 PM |
5604 | /* Update peer route announcements. */ |
5605 | update_group_adjust_peer_afs(member); | |
feb17238 | 5606 | if (peer_established(member)) |
b90a8e13 | 5607 | bgp_announce_route_all(member); |
d62a17ae | 5608 | } |
5609 | ||
5610 | return 0; | |
5611 | } | |
5612 | ||
6c537a18 DS |
5613 | /* set the peers RFC 4271 DelayOpen session attribute flag and DelayOpenTimer |
5614 | * interval | |
5615 | */ | |
5616 | int peer_timers_delayopen_set(struct peer *peer, uint32_t delayopen) | |
5617 | { | |
5618 | struct peer *member; | |
5619 | struct listnode *node; | |
5620 | ||
5621 | /* Set peers session attribute flag and timer interval. */ | |
5622 | peer_flag_set(peer, PEER_FLAG_TIMER_DELAYOPEN); | |
5623 | peer->delayopen = delayopen; | |
5624 | peer->v_delayopen = delayopen; | |
5625 | ||
5626 | /* Skip group mechanics for regular peers. */ | |
5627 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5628 | return 0; | |
5629 | ||
5630 | /* Set flag and configuration on all peer-group members, unless they are | |
5631 | * explicitely overriding peer-group configuration. | |
5632 | */ | |
5633 | for (ALL_LIST_ELEMENTS_RO(peer->group->peer, node, member)) { | |
5634 | /* Skip peers with overridden configuration. */ | |
5635 | if (CHECK_FLAG(member->flags_override, | |
5636 | PEER_FLAG_TIMER_DELAYOPEN)) | |
5637 | continue; | |
5638 | ||
5639 | /* Set session attribute flag and timer intervals on peer-group | |
5640 | * member. | |
5641 | */ | |
5642 | SET_FLAG(member->flags, PEER_FLAG_TIMER_DELAYOPEN); | |
5643 | member->delayopen = delayopen; | |
5644 | member->v_delayopen = delayopen; | |
5645 | } | |
5646 | ||
5647 | return 0; | |
5648 | } | |
5649 | ||
5650 | /* unset the peers RFC 4271 DelayOpen session attribute flag and reset the | |
5651 | * DelayOpenTimer interval to the default value. | |
5652 | */ | |
5653 | int peer_timers_delayopen_unset(struct peer *peer) | |
5654 | { | |
5655 | struct peer *member; | |
5656 | struct listnode *node; | |
5657 | ||
5658 | /* Inherit configuration from peer-group if peer is member. */ | |
5659 | if (peer_group_active(peer)) { | |
5660 | peer_flag_inherit(peer, PEER_FLAG_TIMER_DELAYOPEN); | |
5661 | PEER_ATTR_INHERIT(peer, peer->group, delayopen); | |
5662 | } else { | |
5663 | /* Otherwise remove session attribute flag and set timer | |
5664 | * interval to default value. | |
5665 | */ | |
5666 | peer_flag_unset(peer, PEER_FLAG_TIMER_DELAYOPEN); | |
5667 | peer->delayopen = peer->bgp->default_delayopen; | |
5668 | } | |
5669 | ||
5670 | /* Set timer value to zero */ | |
5671 | peer->v_delayopen = 0; | |
5672 | ||
5673 | /* Skip peer-group mechanics for regular peers. */ | |
5674 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5675 | return 0; | |
5676 | ||
5677 | /* Remove flag and configuration from all peer-group members, unless | |
5678 | * they are explicitely overriding peer-group configuration. | |
5679 | */ | |
5680 | for (ALL_LIST_ELEMENTS_RO(peer->group->peer, node, member)) { | |
5681 | /* Skip peers with overridden configuration. */ | |
5682 | if (CHECK_FLAG(member->flags_override, | |
5683 | PEER_FLAG_TIMER_DELAYOPEN)) | |
5684 | continue; | |
5685 | ||
5686 | /* Remove session attribute flag, reset the timer interval to | |
5687 | * the default value and set the timer value to zero. | |
5688 | */ | |
5689 | UNSET_FLAG(member->flags, PEER_FLAG_TIMER_DELAYOPEN); | |
5690 | member->delayopen = peer->bgp->default_delayopen; | |
5691 | member->v_delayopen = 0; | |
5692 | } | |
5693 | ||
5694 | return 0; | |
5695 | } | |
5696 | ||
d62a17ae | 5697 | /* neighbor interface */ |
5698 | void peer_interface_set(struct peer *peer, const char *str) | |
5699 | { | |
0a22ddfb | 5700 | XFREE(MTYPE_BGP_PEER_IFNAME, peer->ifname); |
d62a17ae | 5701 | peer->ifname = XSTRDUP(MTYPE_BGP_PEER_IFNAME, str); |
5702 | } | |
5703 | ||
5704 | void peer_interface_unset(struct peer *peer) | |
5705 | { | |
0a22ddfb | 5706 | XFREE(MTYPE_BGP_PEER_IFNAME, peer->ifname); |
d62a17ae | 5707 | } |
5708 | ||
5709 | /* Allow-as in. */ | |
5710 | int peer_allowas_in_set(struct peer *peer, afi_t afi, safi_t safi, | |
5711 | int allow_num, int origin) | |
5712 | { | |
598ce6bd | 5713 | struct peer *member; |
d62a17ae | 5714 | struct listnode *node, *nnode; |
5715 | ||
598ce6bd PM |
5716 | if (!origin && (allow_num < 1 || allow_num > 10)) |
5717 | return BGP_ERR_INVALID_VALUE; | |
5718 | ||
5719 | /* Set flag and configuration on peer. */ | |
5720 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_ALLOWAS_IN); | |
d62a17ae | 5721 | if (origin) { |
598ce6bd | 5722 | if (peer->allowas_in[afi][safi] != 0 |
d62a17ae | 5723 | || !CHECK_FLAG(peer->af_flags[afi][safi], |
5724 | PEER_FLAG_ALLOWAS_IN_ORIGIN)) { | |
d62a17ae | 5725 | peer_af_flag_set(peer, afi, safi, |
5726 | PEER_FLAG_ALLOWAS_IN_ORIGIN); | |
598ce6bd | 5727 | peer->allowas_in[afi][safi] = 0; |
d62a17ae | 5728 | peer_on_policy_change(peer, afi, safi, 0); |
5729 | } | |
d62a17ae | 5730 | } else { |
d62a17ae | 5731 | if (peer->allowas_in[afi][safi] != allow_num |
5732 | || CHECK_FLAG(peer->af_flags[afi][safi], | |
5733 | PEER_FLAG_ALLOWAS_IN_ORIGIN)) { | |
598ce6bd | 5734 | |
d62a17ae | 5735 | peer_af_flag_unset(peer, afi, safi, |
5736 | PEER_FLAG_ALLOWAS_IN_ORIGIN); | |
598ce6bd | 5737 | peer->allowas_in[afi][safi] = allow_num; |
d62a17ae | 5738 | peer_on_policy_change(peer, afi, safi, 0); |
5739 | } | |
598ce6bd | 5740 | } |
d62a17ae | 5741 | |
598ce6bd PM |
5742 | /* Skip peer-group mechanics for regular peers. */ |
5743 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5744 | return 0; | |
d62a17ae | 5745 | |
598ce6bd PM |
5746 | /* |
5747 | * Set flag and configuration on all peer-group members, unless | |
5748 | * they are explicitely overriding peer-group configuration. | |
5749 | */ | |
5750 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5751 | /* Skip peers with overridden configuration. */ | |
5752 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
246bb5f0 | 5753 | PEER_FLAG_ALLOWAS_IN)) |
598ce6bd PM |
5754 | continue; |
5755 | ||
5756 | /* Set flag and configuration on peer-group member. */ | |
5757 | SET_FLAG(member->af_flags[afi][safi], PEER_FLAG_ALLOWAS_IN); | |
5758 | if (origin) { | |
5759 | if (member->allowas_in[afi][safi] != 0 | |
5760 | || !CHECK_FLAG(member->af_flags[afi][safi], | |
cf9ac8bf | 5761 | PEER_FLAG_ALLOWAS_IN_ORIGIN)) { |
598ce6bd | 5762 | SET_FLAG(member->af_flags[afi][safi], |
cf9ac8bf | 5763 | PEER_FLAG_ALLOWAS_IN_ORIGIN); |
598ce6bd PM |
5764 | member->allowas_in[afi][safi] = 0; |
5765 | peer_on_policy_change(peer, afi, safi, 0); | |
5766 | } | |
5767 | } else { | |
5768 | if (member->allowas_in[afi][safi] != allow_num | |
5769 | || CHECK_FLAG(member->af_flags[afi][safi], | |
d62a17ae | 5770 | PEER_FLAG_ALLOWAS_IN_ORIGIN)) { |
598ce6bd PM |
5771 | UNSET_FLAG(member->af_flags[afi][safi], |
5772 | PEER_FLAG_ALLOWAS_IN_ORIGIN); | |
5773 | member->allowas_in[afi][safi] = allow_num; | |
d62a17ae | 5774 | peer_on_policy_change(peer, afi, safi, 0); |
5775 | } | |
5776 | } | |
5777 | } | |
5778 | ||
5779 | return 0; | |
5780 | } | |
5781 | ||
5782 | int peer_allowas_in_unset(struct peer *peer, afi_t afi, safi_t safi) | |
5783 | { | |
598ce6bd | 5784 | struct peer *member; |
d62a17ae | 5785 | struct listnode *node, *nnode; |
5786 | ||
598ce6bd PM |
5787 | /* Skip peer if flag is already disabled. */ |
5788 | if (!CHECK_FLAG(peer->af_flags[afi][safi], PEER_FLAG_ALLOWAS_IN)) | |
5789 | return 0; | |
d62a17ae | 5790 | |
598ce6bd PM |
5791 | /* Inherit configuration from peer-group if peer is member. */ |
5792 | if (peer_group_active(peer)) { | |
5793 | peer_af_flag_inherit(peer, afi, safi, PEER_FLAG_ALLOWAS_IN); | |
5794 | peer_af_flag_inherit(peer, afi, safi, | |
cf9ac8bf | 5795 | PEER_FLAG_ALLOWAS_IN_ORIGIN); |
e7103a96 | 5796 | PEER_ATTR_INHERIT(peer, peer->group, allowas_in[afi][safi]); |
d62a17ae | 5797 | peer_on_policy_change(peer, afi, safi, 0); |
598ce6bd PM |
5798 | |
5799 | return 0; | |
5800 | } | |
5801 | ||
5802 | /* Remove flag and configuration from peer. */ | |
5803 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_ALLOWAS_IN); | |
5804 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_ALLOWAS_IN_ORIGIN); | |
5805 | peer->allowas_in[afi][safi] = 0; | |
5806 | peer_on_policy_change(peer, afi, safi, 0); | |
5807 | ||
5808 | /* Skip peer-group mechanics if handling a regular peer. */ | |
5809 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) | |
5810 | return 0; | |
5811 | ||
5812 | /* | |
5813 | * Remove flags and configuration from all peer-group members, unless | |
5814 | * they are explicitely overriding peer-group configuration. | |
5815 | */ | |
5816 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5817 | /* Skip peers with overridden configuration. */ | |
5818 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
cf9ac8bf | 5819 | PEER_FLAG_ALLOWAS_IN)) |
598ce6bd PM |
5820 | continue; |
5821 | ||
598ce6bd | 5822 | /* Remove flags and configuration on peer-group member. */ |
cf9ac8bf | 5823 | UNSET_FLAG(member->af_flags[afi][safi], PEER_FLAG_ALLOWAS_IN); |
598ce6bd | 5824 | UNSET_FLAG(member->af_flags[afi][safi], |
cf9ac8bf | 5825 | PEER_FLAG_ALLOWAS_IN_ORIGIN); |
598ce6bd PM |
5826 | member->allowas_in[afi][safi] = 0; |
5827 | peer_on_policy_change(member, afi, safi, 0); | |
d62a17ae | 5828 | } |
5829 | ||
5830 | return 0; | |
5831 | } | |
5832 | ||
f4b8ec07 CS |
5833 | int peer_local_as_set(struct peer *peer, as_t as, bool no_prepend, |
5834 | bool replace_as) | |
d62a17ae | 5835 | { |
a14810f4 | 5836 | bool old_no_prepend, old_replace_as; |
d62a17ae | 5837 | struct bgp *bgp = peer->bgp; |
a14810f4 | 5838 | struct peer *member; |
d62a17ae | 5839 | struct listnode *node, *nnode; |
469cbb0f | 5840 | bgp_peer_sort_t ptype = peer_sort(peer); |
d62a17ae | 5841 | |
469cbb0f | 5842 | if (ptype != BGP_PEER_EBGP && ptype != BGP_PEER_INTERNAL) |
d62a17ae | 5843 | return BGP_ERR_LOCAL_AS_ALLOWED_ONLY_FOR_EBGP; |
5844 | ||
5845 | if (bgp->as == as) | |
5846 | return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS; | |
5847 | ||
5848 | if (peer->as == as) | |
5849 | return BGP_ERR_CANNOT_HAVE_LOCAL_AS_SAME_AS_REMOTE_AS; | |
5850 | ||
a14810f4 PM |
5851 | /* Save previous flag states. */ |
5852 | old_no_prepend = | |
5853 | !!CHECK_FLAG(peer->flags, PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
5854 | old_replace_as = | |
5855 | !!CHECK_FLAG(peer->flags, PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
d62a17ae | 5856 | |
a14810f4 PM |
5857 | /* Set flag and configuration on peer. */ |
5858 | peer_flag_set(peer, PEER_FLAG_LOCAL_AS); | |
5859 | peer_flag_modify(peer, PEER_FLAG_LOCAL_AS_NO_PREPEND, no_prepend); | |
5860 | peer_flag_modify(peer, PEER_FLAG_LOCAL_AS_REPLACE_AS, replace_as); | |
d62a17ae | 5861 | |
a14810f4 PM |
5862 | if (peer->change_local_as == as && old_no_prepend == no_prepend |
5863 | && old_replace_as == replace_as) | |
5864 | return 0; | |
5865 | peer->change_local_as = as; | |
d62a17ae | 5866 | |
a14810f4 | 5867 | /* Check if handling a regular peer. */ |
d62a17ae | 5868 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 5869 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 5870 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
5871 | peer->last_reset = PEER_DOWN_LOCAL_AS_CHANGE; | |
5872 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
5873 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
5874 | } else | |
5875 | bgp_session_reset(peer); | |
a14810f4 PM |
5876 | |
5877 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 5878 | return 0; |
5879 | } | |
5880 | ||
a14810f4 PM |
5881 | /* |
5882 | * Set flag and configuration on all peer-group members, unless they are | |
5883 | * explicitely overriding peer-group configuration. | |
5884 | */ | |
5885 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5886 | /* Skip peers with overridden configuration. */ | |
5887 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_LOCAL_AS)) | |
5888 | continue; | |
d62a17ae | 5889 | |
a14810f4 PM |
5890 | /* Skip peers with the same configuration. */ |
5891 | old_no_prepend = CHECK_FLAG(member->flags, | |
5892 | PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
5893 | old_replace_as = CHECK_FLAG(member->flags, | |
5894 | PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
5895 | if (member->change_local_as == as | |
5896 | && CHECK_FLAG(member->flags, PEER_FLAG_LOCAL_AS) | |
5897 | && old_no_prepend == no_prepend | |
5898 | && old_replace_as == replace_as) | |
5899 | continue; | |
d62a17ae | 5900 | |
a14810f4 PM |
5901 | /* Set flag and configuration on peer-group member. */ |
5902 | SET_FLAG(member->flags, PEER_FLAG_LOCAL_AS); | |
5903 | COND_FLAG(member->flags, PEER_FLAG_LOCAL_AS_NO_PREPEND, | |
5904 | no_prepend); | |
5905 | COND_FLAG(member->flags, PEER_FLAG_LOCAL_AS_REPLACE_AS, | |
5906 | replace_as); | |
5907 | member->change_local_as = as; | |
5908 | ||
5909 | /* Send notification or stop peer depending on state. */ | |
5910 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) { | |
5911 | member->last_reset = PEER_DOWN_LOCAL_AS_CHANGE; | |
5912 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 5913 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
5914 | } else | |
a14810f4 | 5915 | BGP_EVENT_ADD(member, BGP_Stop); |
d62a17ae | 5916 | } |
5917 | ||
5918 | return 0; | |
5919 | } | |
5920 | ||
5921 | int peer_local_as_unset(struct peer *peer) | |
5922 | { | |
a14810f4 | 5923 | struct peer *member; |
d62a17ae | 5924 | struct listnode *node, *nnode; |
5925 | ||
a14810f4 | 5926 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_LOCAL_AS)) |
d62a17ae | 5927 | return 0; |
5928 | ||
a14810f4 PM |
5929 | /* Inherit configuration from peer-group if peer is member. */ |
5930 | if (peer_group_active(peer)) { | |
5931 | peer_flag_inherit(peer, PEER_FLAG_LOCAL_AS); | |
5932 | peer_flag_inherit(peer, PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
5933 | peer_flag_inherit(peer, PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
5934 | PEER_ATTR_INHERIT(peer, peer->group, change_local_as); | |
5935 | } else { | |
5936 | /* Otherwise remove flag and configuration from peer. */ | |
5937 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS); | |
5938 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
5939 | peer_flag_unset(peer, PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
5940 | peer->change_local_as = 0; | |
5941 | } | |
d62a17ae | 5942 | |
a14810f4 | 5943 | /* Check if handling a regular peer. */ |
d62a17ae | 5944 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 5945 | /* Send notification or stop peer depending on state. */ |
d62a17ae | 5946 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) { |
5947 | peer->last_reset = PEER_DOWN_LOCAL_AS_CHANGE; | |
5948 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
5949 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
5950 | } else | |
5951 | BGP_EVENT_ADD(peer, BGP_Stop); | |
5952 | ||
a14810f4 | 5953 | /* Skip peer-group mechanics for regular peers. */ |
d62a17ae | 5954 | return 0; |
5955 | } | |
5956 | ||
a14810f4 PM |
5957 | /* |
5958 | * Remove flag and configuration from all peer-group members, unless | |
5959 | * they are explicitely overriding peer-group configuration. | |
5960 | */ | |
5961 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
5962 | /* Skip peers with overridden configuration. */ | |
5963 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_LOCAL_AS)) | |
5964 | continue; | |
d62a17ae | 5965 | |
a14810f4 PM |
5966 | /* Remove flag and configuration on peer-group member. */ |
5967 | UNSET_FLAG(member->flags, PEER_FLAG_LOCAL_AS); | |
5968 | UNSET_FLAG(member->flags, PEER_FLAG_LOCAL_AS_NO_PREPEND); | |
5969 | UNSET_FLAG(member->flags, PEER_FLAG_LOCAL_AS_REPLACE_AS); | |
5970 | member->change_local_as = 0; | |
5971 | ||
5972 | /* Send notification or stop peer depending on state. */ | |
5973 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) { | |
5974 | member->last_reset = PEER_DOWN_LOCAL_AS_CHANGE; | |
5975 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 5976 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
5977 | } else | |
a14810f4 | 5978 | bgp_session_reset(member); |
d62a17ae | 5979 | } |
a14810f4 | 5980 | |
d62a17ae | 5981 | return 0; |
5982 | } | |
5983 | ||
5984 | /* Set password for authenticating with the peer. */ | |
5985 | int peer_password_set(struct peer *peer, const char *password) | |
5986 | { | |
a14810f4 PM |
5987 | struct peer *member; |
5988 | struct listnode *node, *nnode; | |
d62a17ae | 5989 | int len = password ? strlen(password) : 0; |
5990 | int ret = BGP_SUCCESS; | |
5991 | ||
5992 | if ((len < PEER_PASSWORD_MINLEN) || (len > PEER_PASSWORD_MAXLEN)) | |
5993 | return BGP_ERR_INVALID_VALUE; | |
5994 | ||
a14810f4 PM |
5995 | /* Set flag and configuration on peer. */ |
5996 | peer_flag_set(peer, PEER_FLAG_PASSWORD); | |
5997 | if (peer->password && strcmp(peer->password, password) == 0) | |
d62a17ae | 5998 | return 0; |
a14810f4 | 5999 | XFREE(MTYPE_PEER_PASSWORD, peer->password); |
d62a17ae | 6000 | peer->password = XSTRDUP(MTYPE_PEER_PASSWORD, password); |
6001 | ||
a14810f4 | 6002 | /* Check if handling a regular peer. */ |
d62a17ae | 6003 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 6004 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 6005 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) |
6006 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
6007 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
6008 | else | |
6009 | bgp_session_reset(peer); | |
6010 | ||
a14810f4 PM |
6011 | /* |
6012 | * Attempt to install password on socket and skip peer-group | |
6013 | * mechanics. | |
6014 | */ | |
d62a17ae | 6015 | if (BGP_PEER_SU_UNSPEC(peer)) |
6016 | return BGP_SUCCESS; | |
d62a17ae | 6017 | return (bgp_md5_set(peer) >= 0) ? BGP_SUCCESS |
6018 | : BGP_ERR_TCPSIG_FAILED; | |
6019 | } | |
6020 | ||
a14810f4 PM |
6021 | /* |
6022 | * Set flag and configuration on all peer-group members, unless they are | |
6023 | * explicitely overriding peer-group configuration. | |
6024 | */ | |
6025 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6026 | /* Skip peers with overridden configuration. */ | |
6027 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_PASSWORD)) | |
d62a17ae | 6028 | continue; |
6029 | ||
a14810f4 PM |
6030 | /* Skip peers with the same password. */ |
6031 | if (member->password && strcmp(member->password, password) == 0) | |
6032 | continue; | |
d62a17ae | 6033 | |
a14810f4 PM |
6034 | /* Set flag and configuration on peer-group member. */ |
6035 | SET_FLAG(member->flags, PEER_FLAG_PASSWORD); | |
6036 | if (member->password) | |
6037 | XFREE(MTYPE_PEER_PASSWORD, member->password); | |
6038 | member->password = XSTRDUP(MTYPE_PEER_PASSWORD, password); | |
6039 | ||
6040 | /* Send notification or reset peer depending on state. */ | |
6041 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) | |
6042 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 6043 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
6044 | else | |
a14810f4 | 6045 | bgp_session_reset(member); |
d62a17ae | 6046 | |
a14810f4 PM |
6047 | /* Attempt to install password on socket. */ |
6048 | if (!BGP_PEER_SU_UNSPEC(member) && bgp_md5_set(member) < 0) | |
6049 | ret = BGP_ERR_TCPSIG_FAILED; | |
d62a17ae | 6050 | } |
6051 | ||
9e7d9a61 QY |
6052 | /* Set flag and configuration on all peer-group listen ranges */ |
6053 | struct listnode *ln; | |
6054 | struct prefix *lr; | |
6055 | ||
6056 | for (ALL_LIST_ELEMENTS_RO(peer->group->listen_range[AFI_IP], ln, lr)) | |
a4faae3a | 6057 | bgp_md5_set_prefix(peer->bgp, lr, password); |
9e7d9a61 | 6058 | for (ALL_LIST_ELEMENTS_RO(peer->group->listen_range[AFI_IP6], ln, lr)) |
a4faae3a | 6059 | bgp_md5_set_prefix(peer->bgp, lr, password); |
9e7d9a61 | 6060 | |
d62a17ae | 6061 | return ret; |
6062 | } | |
6063 | ||
6064 | int peer_password_unset(struct peer *peer) | |
6065 | { | |
a14810f4 PM |
6066 | struct peer *member; |
6067 | struct listnode *node, *nnode; | |
d62a17ae | 6068 | |
a14810f4 | 6069 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_PASSWORD)) |
d62a17ae | 6070 | return 0; |
6071 | ||
a14810f4 PM |
6072 | /* Inherit configuration from peer-group if peer is member. */ |
6073 | if (peer_group_active(peer)) { | |
6074 | peer_flag_inherit(peer, PEER_FLAG_PASSWORD); | |
6075 | PEER_STR_ATTR_INHERIT(peer, peer->group, password, | |
6076 | MTYPE_PEER_PASSWORD); | |
6077 | } else { | |
6078 | /* Otherwise remove flag and configuration from peer. */ | |
6079 | peer_flag_unset(peer, PEER_FLAG_PASSWORD); | |
6080 | XFREE(MTYPE_PEER_PASSWORD, peer->password); | |
6081 | } | |
6082 | ||
6083 | /* Check if handling a regular peer. */ | |
d62a17ae | 6084 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
a14810f4 | 6085 | /* Send notification or reset peer depending on state. */ |
d62a17ae | 6086 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) |
6087 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
6088 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); | |
6089 | else | |
6090 | bgp_session_reset(peer); | |
6091 | ||
a14810f4 | 6092 | /* Attempt to uninstall password on socket. */ |
d62a17ae | 6093 | if (!BGP_PEER_SU_UNSPEC(peer)) |
6094 | bgp_md5_unset(peer); | |
a14810f4 | 6095 | /* Skip peer-group mechanics for regular peers. */ |
d62a17ae | 6096 | return 0; |
6097 | } | |
6098 | ||
a14810f4 PM |
6099 | /* |
6100 | * Remove flag and configuration from all peer-group members, unless | |
6101 | * they are explicitely overriding peer-group configuration. | |
6102 | */ | |
6103 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6104 | /* Skip peers with overridden configuration. */ | |
6105 | if (CHECK_FLAG(member->flags_override, PEER_FLAG_PASSWORD)) | |
d62a17ae | 6106 | continue; |
6107 | ||
a14810f4 PM |
6108 | /* Remove flag and configuration on peer-group member. */ |
6109 | UNSET_FLAG(member->flags, PEER_FLAG_PASSWORD); | |
6110 | XFREE(MTYPE_PEER_PASSWORD, member->password); | |
6111 | ||
6112 | /* Send notification or reset peer depending on state. */ | |
6113 | if (BGP_IS_VALID_STATE_FOR_NOTIF(member->status)) | |
6114 | bgp_notify_send(member, BGP_NOTIFY_CEASE, | |
d62a17ae | 6115 | BGP_NOTIFY_CEASE_CONFIG_CHANGE); |
6116 | else | |
a14810f4 | 6117 | bgp_session_reset(member); |
d62a17ae | 6118 | |
a14810f4 PM |
6119 | /* Attempt to uninstall password on socket. */ |
6120 | if (!BGP_PEER_SU_UNSPEC(member)) | |
6121 | bgp_md5_unset(member); | |
d62a17ae | 6122 | } |
6123 | ||
9e7d9a61 QY |
6124 | /* Set flag and configuration on all peer-group listen ranges */ |
6125 | struct listnode *ln; | |
6126 | struct prefix *lr; | |
6127 | ||
6128 | for (ALL_LIST_ELEMENTS_RO(peer->group->listen_range[AFI_IP], ln, lr)) | |
a4faae3a | 6129 | bgp_md5_unset_prefix(peer->bgp, lr); |
9e7d9a61 | 6130 | for (ALL_LIST_ELEMENTS_RO(peer->group->listen_range[AFI_IP6], ln, lr)) |
a4faae3a | 6131 | bgp_md5_unset_prefix(peer->bgp, lr); |
9e7d9a61 | 6132 | |
d62a17ae | 6133 | return 0; |
6134 | } | |
6b0655a2 | 6135 | |
3f9c7369 | 6136 | |
718e3744 | 6137 | /* Set distribute list to the peer. */ |
d62a17ae | 6138 | int peer_distribute_set(struct peer *peer, afi_t afi, safi_t safi, int direct, |
6139 | const char *name) | |
6140 | { | |
70ee29b4 | 6141 | struct peer *member; |
d62a17ae | 6142 | struct bgp_filter *filter; |
d62a17ae | 6143 | struct listnode *node, *nnode; |
6144 | ||
6145 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6146 | return BGP_ERR_INVALID_VALUE; | |
6147 | ||
70ee29b4 | 6148 | /* Set configuration on peer. */ |
d62a17ae | 6149 | filter = &peer->filter[afi][safi]; |
d62a17ae | 6150 | if (filter->plist[direct].name) |
6151 | return BGP_ERR_PEER_FILTER_CONFLICT; | |
d62a17ae | 6152 | if (filter->dlist[direct].name) |
6153 | XFREE(MTYPE_BGP_FILTER_NAME, filter->dlist[direct].name); | |
6154 | filter->dlist[direct].name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6155 | filter->dlist[direct].alist = access_list_lookup(afi, name); | |
6156 | ||
70ee29b4 | 6157 | /* Check if handling a regular peer. */ |
d62a17ae | 6158 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 PM |
6159 | /* Set override-flag and process peer route updates. */ |
6160 | SET_FLAG(peer->filter_override[afi][safi][direct], | |
6161 | PEER_FT_DISTRIBUTE_LIST); | |
d62a17ae | 6162 | peer_on_policy_change(peer, afi, safi, |
6163 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6164 | |
6165 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6166 | return 0; |
6167 | } | |
6168 | ||
70ee29b4 PM |
6169 | /* |
6170 | * Set configuration on all peer-group members, un less they are | |
6171 | * explicitely overriding peer-group configuration. | |
6172 | */ | |
6173 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6174 | /* Skip peers with overridden configuration. */ | |
6175 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6176 | PEER_FT_DISTRIBUTE_LIST)) | |
6177 | continue; | |
d62a17ae | 6178 | |
70ee29b4 PM |
6179 | /* Set configuration on peer-group member. */ |
6180 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6181 | if (filter->dlist[direct].name) |
6182 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6183 | filter->dlist[direct].name); | |
6184 | filter->dlist[direct].name = | |
6185 | XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6186 | filter->dlist[direct].alist = access_list_lookup(afi, name); | |
70ee29b4 PM |
6187 | |
6188 | /* Process peer route updates. */ | |
6189 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6190 | (direct == FILTER_OUT) ? 1 : 0); |
6191 | } | |
6192 | ||
6193 | return 0; | |
6194 | } | |
6195 | ||
6196 | int peer_distribute_unset(struct peer *peer, afi_t afi, safi_t safi, int direct) | |
6197 | { | |
70ee29b4 | 6198 | struct peer *member; |
d62a17ae | 6199 | struct bgp_filter *filter; |
d62a17ae | 6200 | struct listnode *node, *nnode; |
6201 | ||
6202 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6203 | return BGP_ERR_INVALID_VALUE; | |
6204 | ||
70ee29b4 PM |
6205 | /* Unset override-flag unconditionally. */ |
6206 | UNSET_FLAG(peer->filter_override[afi][safi][direct], | |
6207 | PEER_FT_DISTRIBUTE_LIST); | |
d62a17ae | 6208 | |
70ee29b4 | 6209 | /* Inherit configuration from peer-group if peer is member. */ |
d62a17ae | 6210 | if (peer_group_active(peer)) { |
e7103a96 PM |
6211 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
6212 | filter[afi][safi].dlist[direct].name, | |
6213 | MTYPE_BGP_FILTER_NAME); | |
6214 | PEER_ATTR_INHERIT(peer, peer->group, | |
6215 | filter[afi][safi].dlist[direct].alist); | |
70ee29b4 PM |
6216 | } else { |
6217 | /* Otherwise remove configuration from peer. */ | |
6218 | filter = &peer->filter[afi][safi]; | |
6219 | if (filter->dlist[direct].name) | |
6220 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6221 | filter->dlist[direct].name); | |
6222 | filter->dlist[direct].name = NULL; | |
6223 | filter->dlist[direct].alist = NULL; | |
d62a17ae | 6224 | } |
6225 | ||
70ee29b4 | 6226 | /* Check if handling a regular peer. */ |
d62a17ae | 6227 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 | 6228 | /* Process peer route updates. */ |
d62a17ae | 6229 | peer_on_policy_change(peer, afi, safi, |
6230 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6231 | |
6232 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6233 | return 0; |
6234 | } | |
6235 | ||
70ee29b4 PM |
6236 | /* |
6237 | * Remove configuration on all peer-group members, unless they are | |
6238 | * explicitely overriding peer-group configuration. | |
6239 | */ | |
6240 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6241 | /* Skip peers with overridden configuration. */ | |
6242 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6243 | PEER_FT_DISTRIBUTE_LIST)) | |
6244 | continue; | |
d62a17ae | 6245 | |
70ee29b4 PM |
6246 | /* Remove configuration on peer-group member. */ |
6247 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6248 | if (filter->dlist[direct].name) |
6249 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6250 | filter->dlist[direct].name); | |
6251 | filter->dlist[direct].name = NULL; | |
6252 | filter->dlist[direct].alist = NULL; | |
70ee29b4 PM |
6253 | |
6254 | /* Process peer route updates. */ | |
6255 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6256 | (direct == FILTER_OUT) ? 1 : 0); |
6257 | } | |
6258 | ||
6259 | return 0; | |
6260 | } | |
6261 | ||
6262 | /* Update distribute list. */ | |
6263 | static void peer_distribute_update(struct access_list *access) | |
6264 | { | |
6265 | afi_t afi; | |
6266 | safi_t safi; | |
6267 | int direct; | |
6268 | struct listnode *mnode, *mnnode; | |
6269 | struct listnode *node, *nnode; | |
6270 | struct bgp *bgp; | |
6271 | struct peer *peer; | |
6272 | struct peer_group *group; | |
6273 | struct bgp_filter *filter; | |
6274 | ||
6275 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
6276 | if (access->name) | |
6277 | update_group_policy_update(bgp, BGP_POLICY_FILTER_LIST, | |
6278 | access->name, 0, 0); | |
6279 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
05c7a1cc QY |
6280 | FOREACH_AFI_SAFI (afi, safi) { |
6281 | filter = &peer->filter[afi][safi]; | |
6282 | ||
6283 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6284 | direct++) { | |
6285 | if (filter->dlist[direct].name) | |
6286 | filter->dlist[direct] | |
6287 | .alist = access_list_lookup( | |
6288 | afi, | |
d62a17ae | 6289 | filter->dlist[direct] |
05c7a1cc QY |
6290 | .name); |
6291 | else | |
6292 | filter->dlist[direct].alist = | |
6293 | NULL; | |
d62a17ae | 6294 | } |
05c7a1cc | 6295 | } |
d62a17ae | 6296 | } |
6297 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) { | |
05c7a1cc QY |
6298 | FOREACH_AFI_SAFI (afi, safi) { |
6299 | filter = &group->conf->filter[afi][safi]; | |
6300 | ||
6301 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6302 | direct++) { | |
6303 | if (filter->dlist[direct].name) | |
6304 | filter->dlist[direct] | |
6305 | .alist = access_list_lookup( | |
6306 | afi, | |
d62a17ae | 6307 | filter->dlist[direct] |
05c7a1cc QY |
6308 | .name); |
6309 | else | |
6310 | filter->dlist[direct].alist = | |
6311 | NULL; | |
d62a17ae | 6312 | } |
05c7a1cc | 6313 | } |
d62a17ae | 6314 | } |
49e5a4a0 | 6315 | #ifdef ENABLE_BGP_VNC |
d62a17ae | 6316 | vnc_prefix_list_update(bgp); |
6317 | #endif | |
6318 | } | |
6319 | } | |
6320 | ||
6321 | /* Set prefix list to the peer. */ | |
6322 | int peer_prefix_list_set(struct peer *peer, afi_t afi, safi_t safi, int direct, | |
6323 | const char *name) | |
6324 | { | |
70ee29b4 | 6325 | struct peer *member; |
d62a17ae | 6326 | struct bgp_filter *filter; |
d62a17ae | 6327 | struct listnode *node, *nnode; |
6328 | ||
6329 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6330 | return BGP_ERR_INVALID_VALUE; | |
6331 | ||
70ee29b4 | 6332 | /* Set configuration on peer. */ |
d62a17ae | 6333 | filter = &peer->filter[afi][safi]; |
d62a17ae | 6334 | if (filter->dlist[direct].name) |
6335 | return BGP_ERR_PEER_FILTER_CONFLICT; | |
d62a17ae | 6336 | if (filter->plist[direct].name) |
6337 | XFREE(MTYPE_BGP_FILTER_NAME, filter->plist[direct].name); | |
6338 | filter->plist[direct].name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6339 | filter->plist[direct].plist = prefix_list_lookup(afi, name); | |
6340 | ||
70ee29b4 | 6341 | /* Check if handling a regular peer. */ |
d62a17ae | 6342 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 PM |
6343 | /* Set override-flag and process peer route updates. */ |
6344 | SET_FLAG(peer->filter_override[afi][safi][direct], | |
6345 | PEER_FT_PREFIX_LIST); | |
d62a17ae | 6346 | peer_on_policy_change(peer, afi, safi, |
6347 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6348 | |
6349 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6350 | return 0; |
6351 | } | |
6352 | ||
70ee29b4 PM |
6353 | /* |
6354 | * Set configuration on all peer-group members, unless they are | |
6355 | * explicitely overriding peer-group configuration. | |
6356 | */ | |
6357 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6358 | /* Skip peers with overridden configuration. */ | |
6359 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6360 | PEER_FT_PREFIX_LIST)) | |
6361 | continue; | |
d62a17ae | 6362 | |
70ee29b4 PM |
6363 | /* Set configuration on peer-group member. */ |
6364 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6365 | if (filter->plist[direct].name) |
6366 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6367 | filter->plist[direct].name); | |
6368 | filter->plist[direct].name = | |
6369 | XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6370 | filter->plist[direct].plist = prefix_list_lookup(afi, name); | |
70ee29b4 PM |
6371 | |
6372 | /* Process peer route updates. */ | |
6373 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6374 | (direct == FILTER_OUT) ? 1 : 0); |
6375 | } | |
70ee29b4 | 6376 | |
d62a17ae | 6377 | return 0; |
6378 | } | |
6379 | ||
6380 | int peer_prefix_list_unset(struct peer *peer, afi_t afi, safi_t safi, | |
6381 | int direct) | |
6382 | { | |
70ee29b4 | 6383 | struct peer *member; |
d62a17ae | 6384 | struct bgp_filter *filter; |
d62a17ae | 6385 | struct listnode *node, *nnode; |
6386 | ||
6387 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6388 | return BGP_ERR_INVALID_VALUE; | |
6389 | ||
70ee29b4 PM |
6390 | /* Unset override-flag unconditionally. */ |
6391 | UNSET_FLAG(peer->filter_override[afi][safi][direct], | |
6392 | PEER_FT_PREFIX_LIST); | |
d62a17ae | 6393 | |
70ee29b4 | 6394 | /* Inherit configuration from peer-group if peer is member. */ |
d62a17ae | 6395 | if (peer_group_active(peer)) { |
e7103a96 PM |
6396 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
6397 | filter[afi][safi].plist[direct].name, | |
6398 | MTYPE_BGP_FILTER_NAME); | |
6399 | PEER_ATTR_INHERIT(peer, peer->group, | |
6400 | filter[afi][safi].plist[direct].plist); | |
70ee29b4 PM |
6401 | } else { |
6402 | /* Otherwise remove configuration from peer. */ | |
6403 | filter = &peer->filter[afi][safi]; | |
6404 | if (filter->plist[direct].name) | |
6405 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6406 | filter->plist[direct].name); | |
6407 | filter->plist[direct].name = NULL; | |
6408 | filter->plist[direct].plist = NULL; | |
d62a17ae | 6409 | } |
6410 | ||
70ee29b4 | 6411 | /* Check if handling a regular peer. */ |
d62a17ae | 6412 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 | 6413 | /* Process peer route updates. */ |
d62a17ae | 6414 | peer_on_policy_change(peer, afi, safi, |
6415 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6416 | |
6417 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6418 | return 0; |
6419 | } | |
6420 | ||
70ee29b4 PM |
6421 | /* |
6422 | * Remove configuration on all peer-group members, unless they are | |
6423 | * explicitely overriding peer-group configuration. | |
6424 | */ | |
6425 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6426 | /* Skip peers with overridden configuration. */ | |
6427 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6428 | PEER_FT_PREFIX_LIST)) | |
6429 | continue; | |
d62a17ae | 6430 | |
70ee29b4 PM |
6431 | /* Remove configuration on peer-group member. */ |
6432 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6433 | if (filter->plist[direct].name) |
6434 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6435 | filter->plist[direct].name); | |
6436 | filter->plist[direct].name = NULL; | |
6437 | filter->plist[direct].plist = NULL; | |
70ee29b4 PM |
6438 | |
6439 | /* Process peer route updates. */ | |
6440 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6441 | (direct == FILTER_OUT) ? 1 : 0); |
6442 | } | |
6443 | ||
6444 | return 0; | |
6445 | } | |
6446 | ||
6447 | /* Update prefix-list list. */ | |
6448 | static void peer_prefix_list_update(struct prefix_list *plist) | |
6449 | { | |
6450 | struct listnode *mnode, *mnnode; | |
6451 | struct listnode *node, *nnode; | |
6452 | struct bgp *bgp; | |
6453 | struct peer *peer; | |
6454 | struct peer_group *group; | |
6455 | struct bgp_filter *filter; | |
6456 | afi_t afi; | |
6457 | safi_t safi; | |
6458 | int direct; | |
6459 | ||
6460 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
6461 | ||
6462 | /* | |
6463 | * Update the prefix-list on update groups. | |
6464 | */ | |
6465 | update_group_policy_update( | |
6466 | bgp, BGP_POLICY_PREFIX_LIST, | |
6467 | plist ? prefix_list_name(plist) : NULL, 0, 0); | |
6468 | ||
6469 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
05c7a1cc QY |
6470 | FOREACH_AFI_SAFI (afi, safi) { |
6471 | filter = &peer->filter[afi][safi]; | |
6472 | ||
6473 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6474 | direct++) { | |
6475 | if (filter->plist[direct].name) | |
6476 | filter->plist[direct] | |
6477 | .plist = prefix_list_lookup( | |
6478 | afi, | |
d62a17ae | 6479 | filter->plist[direct] |
05c7a1cc QY |
6480 | .name); |
6481 | else | |
6482 | filter->plist[direct].plist = | |
6483 | NULL; | |
d62a17ae | 6484 | } |
05c7a1cc | 6485 | } |
d62a17ae | 6486 | } |
6487 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) { | |
05c7a1cc QY |
6488 | FOREACH_AFI_SAFI (afi, safi) { |
6489 | filter = &group->conf->filter[afi][safi]; | |
6490 | ||
6491 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6492 | direct++) { | |
6493 | if (filter->plist[direct].name) | |
6494 | filter->plist[direct] | |
6495 | .plist = prefix_list_lookup( | |
6496 | afi, | |
d62a17ae | 6497 | filter->plist[direct] |
05c7a1cc QY |
6498 | .name); |
6499 | else | |
6500 | filter->plist[direct].plist = | |
6501 | NULL; | |
d62a17ae | 6502 | } |
05c7a1cc | 6503 | } |
d62a17ae | 6504 | } |
6505 | } | |
6506 | } | |
6507 | ||
6508 | int peer_aslist_set(struct peer *peer, afi_t afi, safi_t safi, int direct, | |
6509 | const char *name) | |
6510 | { | |
70ee29b4 | 6511 | struct peer *member; |
d62a17ae | 6512 | struct bgp_filter *filter; |
d62a17ae | 6513 | struct listnode *node, *nnode; |
6514 | ||
6515 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6516 | return BGP_ERR_INVALID_VALUE; | |
6517 | ||
70ee29b4 | 6518 | /* Set configuration on peer. */ |
d62a17ae | 6519 | filter = &peer->filter[afi][safi]; |
d62a17ae | 6520 | if (filter->aslist[direct].name) |
6521 | XFREE(MTYPE_BGP_FILTER_NAME, filter->aslist[direct].name); | |
6522 | filter->aslist[direct].name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6523 | filter->aslist[direct].aslist = as_list_lookup(name); | |
6524 | ||
70ee29b4 | 6525 | /* Check if handling a regular peer. */ |
d62a17ae | 6526 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 PM |
6527 | /* Set override-flag and process peer route updates. */ |
6528 | SET_FLAG(peer->filter_override[afi][safi][direct], | |
6529 | PEER_FT_FILTER_LIST); | |
d62a17ae | 6530 | peer_on_policy_change(peer, afi, safi, |
6531 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6532 | |
6533 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6534 | return 0; |
6535 | } | |
6536 | ||
70ee29b4 PM |
6537 | /* |
6538 | * Set configuration on all peer-group members, unless they are | |
6539 | * explicitely overriding peer-group configuration. | |
6540 | */ | |
6541 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6542 | /* Skip peers with overridden configuration. */ | |
6543 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6544 | PEER_FT_FILTER_LIST)) | |
6545 | continue; | |
d62a17ae | 6546 | |
70ee29b4 PM |
6547 | /* Set configuration on peer-group member. */ |
6548 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6549 | if (filter->aslist[direct].name) |
6550 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6551 | filter->aslist[direct].name); | |
6552 | filter->aslist[direct].name = | |
6553 | XSTRDUP(MTYPE_BGP_FILTER_NAME, name); | |
6554 | filter->aslist[direct].aslist = as_list_lookup(name); | |
70ee29b4 PM |
6555 | |
6556 | /* Process peer route updates. */ | |
6557 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6558 | (direct == FILTER_OUT) ? 1 : 0); |
6559 | } | |
70ee29b4 | 6560 | |
d62a17ae | 6561 | return 0; |
6562 | } | |
6563 | ||
6564 | int peer_aslist_unset(struct peer *peer, afi_t afi, safi_t safi, int direct) | |
6565 | { | |
70ee29b4 | 6566 | struct peer *member; |
d62a17ae | 6567 | struct bgp_filter *filter; |
d62a17ae | 6568 | struct listnode *node, *nnode; |
6569 | ||
6570 | if (direct != FILTER_IN && direct != FILTER_OUT) | |
6571 | return BGP_ERR_INVALID_VALUE; | |
6572 | ||
70ee29b4 PM |
6573 | /* Unset override-flag unconditionally. */ |
6574 | UNSET_FLAG(peer->filter_override[afi][safi][direct], | |
6575 | PEER_FT_FILTER_LIST); | |
d62a17ae | 6576 | |
70ee29b4 | 6577 | /* Inherit configuration from peer-group if peer is member. */ |
d62a17ae | 6578 | if (peer_group_active(peer)) { |
e7103a96 PM |
6579 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
6580 | filter[afi][safi].aslist[direct].name, | |
6581 | MTYPE_BGP_FILTER_NAME); | |
6582 | PEER_ATTR_INHERIT(peer, peer->group, | |
70ee29b4 PM |
6583 | filter[afi][safi].aslist[direct].aslist); |
6584 | } else { | |
6585 | /* Otherwise remove configuration from peer. */ | |
6586 | filter = &peer->filter[afi][safi]; | |
6587 | if (filter->aslist[direct].name) | |
6588 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6589 | filter->aslist[direct].name); | |
6590 | filter->aslist[direct].name = NULL; | |
6591 | filter->aslist[direct].aslist = NULL; | |
d62a17ae | 6592 | } |
6593 | ||
70ee29b4 | 6594 | /* Check if handling a regular peer. */ |
d62a17ae | 6595 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 | 6596 | /* Process peer route updates. */ |
d62a17ae | 6597 | peer_on_policy_change(peer, afi, safi, |
6598 | (direct == FILTER_OUT) ? 1 : 0); | |
70ee29b4 PM |
6599 | |
6600 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6601 | return 0; |
6602 | } | |
6603 | ||
70ee29b4 PM |
6604 | /* |
6605 | * Remove configuration on all peer-group members, unless they are | |
6606 | * explicitely overriding peer-group configuration. | |
6607 | */ | |
6608 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6609 | /* Skip peers with overridden configuration. */ | |
6610 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6611 | PEER_FT_FILTER_LIST)) | |
6612 | continue; | |
d62a17ae | 6613 | |
70ee29b4 PM |
6614 | /* Remove configuration on peer-group member. */ |
6615 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6616 | if (filter->aslist[direct].name) |
6617 | XFREE(MTYPE_BGP_FILTER_NAME, | |
6618 | filter->aslist[direct].name); | |
6619 | filter->aslist[direct].name = NULL; | |
6620 | filter->aslist[direct].aslist = NULL; | |
70ee29b4 PM |
6621 | |
6622 | /* Process peer route updates. */ | |
6623 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6624 | (direct == FILTER_OUT) ? 1 : 0); |
6625 | } | |
6626 | ||
6627 | return 0; | |
6628 | } | |
6629 | ||
6630 | static void peer_aslist_update(const char *aslist_name) | |
6631 | { | |
6632 | afi_t afi; | |
6633 | safi_t safi; | |
6634 | int direct; | |
6635 | struct listnode *mnode, *mnnode; | |
6636 | struct listnode *node, *nnode; | |
6637 | struct bgp *bgp; | |
6638 | struct peer *peer; | |
6639 | struct peer_group *group; | |
6640 | struct bgp_filter *filter; | |
6641 | ||
6642 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) { | |
6643 | update_group_policy_update(bgp, BGP_POLICY_FILTER_LIST, | |
6644 | aslist_name, 0, 0); | |
6645 | ||
6646 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
05c7a1cc QY |
6647 | FOREACH_AFI_SAFI (afi, safi) { |
6648 | filter = &peer->filter[afi][safi]; | |
6649 | ||
6650 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6651 | direct++) { | |
6652 | if (filter->aslist[direct].name) | |
6653 | filter->aslist[direct] | |
6654 | .aslist = as_list_lookup( | |
d62a17ae | 6655 | filter->aslist[direct] |
05c7a1cc QY |
6656 | .name); |
6657 | else | |
6658 | filter->aslist[direct].aslist = | |
6659 | NULL; | |
d62a17ae | 6660 | } |
05c7a1cc | 6661 | } |
d62a17ae | 6662 | } |
6663 | for (ALL_LIST_ELEMENTS(bgp->group, node, nnode, group)) { | |
05c7a1cc QY |
6664 | FOREACH_AFI_SAFI (afi, safi) { |
6665 | filter = &group->conf->filter[afi][safi]; | |
6666 | ||
6667 | for (direct = FILTER_IN; direct < FILTER_MAX; | |
6668 | direct++) { | |
6669 | if (filter->aslist[direct].name) | |
6670 | filter->aslist[direct] | |
6671 | .aslist = as_list_lookup( | |
d62a17ae | 6672 | filter->aslist[direct] |
05c7a1cc QY |
6673 | .name); |
6674 | else | |
6675 | filter->aslist[direct].aslist = | |
6676 | NULL; | |
d62a17ae | 6677 | } |
05c7a1cc | 6678 | } |
d62a17ae | 6679 | } |
6680 | } | |
6681 | } | |
6682 | ||
6683 | static void peer_aslist_add(char *aslist_name) | |
6684 | { | |
6685 | peer_aslist_update(aslist_name); | |
c4efd0f4 | 6686 | route_map_notify_dependencies(aslist_name, RMAP_EVENT_ASLIST_ADDED); |
d62a17ae | 6687 | } |
6688 | ||
6689 | static void peer_aslist_del(const char *aslist_name) | |
6690 | { | |
6691 | peer_aslist_update(aslist_name); | |
6692 | route_map_notify_dependencies(aslist_name, RMAP_EVENT_ASLIST_DELETED); | |
6693 | } | |
6694 | ||
6695 | ||
6696 | int peer_route_map_set(struct peer *peer, afi_t afi, safi_t safi, int direct, | |
1de27621 | 6697 | const char *name, struct route_map *route_map) |
d62a17ae | 6698 | { |
70ee29b4 | 6699 | struct peer *member; |
d62a17ae | 6700 | struct bgp_filter *filter; |
d62a17ae | 6701 | struct listnode *node, *nnode; |
6702 | ||
6703 | if (direct != RMAP_IN && direct != RMAP_OUT) | |
6704 | return BGP_ERR_INVALID_VALUE; | |
6705 | ||
70ee29b4 | 6706 | /* Set configuration on peer. */ |
d62a17ae | 6707 | filter = &peer->filter[afi][safi]; |
6c3247bd NT |
6708 | if (filter->map[direct].name) { |
6709 | /* If the neighbor is configured with the same route-map | |
6710 | * again then, ignore the duplicate configuration. | |
6711 | */ | |
6712 | if (strcmp(filter->map[direct].name, name) == 0) | |
6713 | return 0; | |
6714 | ||
d62a17ae | 6715 | XFREE(MTYPE_BGP_FILTER_NAME, filter->map[direct].name); |
6c3247bd | 6716 | } |
b4897fa5 | 6717 | route_map_counter_decrement(filter->map[direct].map); |
d62a17ae | 6718 | filter->map[direct].name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); |
1de27621 | 6719 | filter->map[direct].map = route_map; |
b4897fa5 | 6720 | route_map_counter_increment(route_map); |
d62a17ae | 6721 | |
70ee29b4 | 6722 | /* Check if handling a regular peer. */ |
d62a17ae | 6723 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 PM |
6724 | /* Set override-flag and process peer route updates. */ |
6725 | SET_FLAG(peer->filter_override[afi][safi][direct], | |
6726 | PEER_FT_ROUTE_MAP); | |
d62a17ae | 6727 | peer_on_policy_change(peer, afi, safi, |
6728 | (direct == RMAP_OUT) ? 1 : 0); | |
70ee29b4 PM |
6729 | |
6730 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6731 | return 0; |
6732 | } | |
6733 | ||
70ee29b4 PM |
6734 | /* |
6735 | * Set configuration on all peer-group members, unless they are | |
6736 | * explicitely overriding peer-group configuration. | |
6737 | */ | |
6738 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6739 | /* Skip peers with overridden configuration. */ | |
6740 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6741 | PEER_FT_ROUTE_MAP)) | |
6742 | continue; | |
d62a17ae | 6743 | |
70ee29b4 PM |
6744 | /* Set configuration on peer-group member. */ |
6745 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6746 | if (filter->map[direct].name) |
6747 | XFREE(MTYPE_BGP_FILTER_NAME, filter->map[direct].name); | |
b4897fa5 | 6748 | route_map_counter_decrement(filter->map[direct].map); |
d62a17ae | 6749 | filter->map[direct].name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); |
1de27621 | 6750 | filter->map[direct].map = route_map; |
b4897fa5 | 6751 | route_map_counter_increment(route_map); |
70ee29b4 PM |
6752 | |
6753 | /* Process peer route updates. */ | |
6754 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6755 | (direct == RMAP_OUT) ? 1 : 0); |
6756 | } | |
6757 | return 0; | |
6758 | } | |
6759 | ||
6760 | /* Unset route-map from the peer. */ | |
6761 | int peer_route_map_unset(struct peer *peer, afi_t afi, safi_t safi, int direct) | |
6762 | { | |
70ee29b4 | 6763 | struct peer *member; |
d62a17ae | 6764 | struct bgp_filter *filter; |
d62a17ae | 6765 | struct listnode *node, *nnode; |
6766 | ||
6767 | if (direct != RMAP_IN && direct != RMAP_OUT) | |
6768 | return BGP_ERR_INVALID_VALUE; | |
6769 | ||
70ee29b4 PM |
6770 | /* Unset override-flag unconditionally. */ |
6771 | UNSET_FLAG(peer->filter_override[afi][safi][direct], PEER_FT_ROUTE_MAP); | |
d62a17ae | 6772 | |
70ee29b4 | 6773 | /* Inherit configuration from peer-group if peer is member. */ |
d62a17ae | 6774 | if (peer_group_active(peer)) { |
e7103a96 PM |
6775 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
6776 | filter[afi][safi].map[direct].name, | |
6777 | MTYPE_BGP_FILTER_NAME); | |
6778 | PEER_ATTR_INHERIT(peer, peer->group, | |
6779 | filter[afi][safi].map[direct].map); | |
70ee29b4 PM |
6780 | } else { |
6781 | /* Otherwise remove configuration from peer. */ | |
6782 | filter = &peer->filter[afi][safi]; | |
6783 | if (filter->map[direct].name) | |
6784 | XFREE(MTYPE_BGP_FILTER_NAME, filter->map[direct].name); | |
b4897fa5 | 6785 | route_map_counter_decrement(filter->map[direct].map); |
70ee29b4 PM |
6786 | filter->map[direct].name = NULL; |
6787 | filter->map[direct].map = NULL; | |
d62a17ae | 6788 | } |
6789 | ||
70ee29b4 | 6790 | /* Check if handling a regular peer. */ |
d62a17ae | 6791 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 | 6792 | /* Process peer route updates. */ |
d62a17ae | 6793 | peer_on_policy_change(peer, afi, safi, |
6794 | (direct == RMAP_OUT) ? 1 : 0); | |
70ee29b4 PM |
6795 | |
6796 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6797 | return 0; |
6798 | } | |
6799 | ||
70ee29b4 PM |
6800 | /* |
6801 | * Remove configuration on all peer-group members, unless they are | |
6802 | * explicitely overriding peer-group configuration. | |
6803 | */ | |
6804 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6805 | /* Skip peers with overridden configuration. */ | |
6806 | if (CHECK_FLAG(member->filter_override[afi][safi][direct], | |
6807 | PEER_FT_ROUTE_MAP)) | |
6808 | continue; | |
d62a17ae | 6809 | |
70ee29b4 PM |
6810 | /* Remove configuration on peer-group member. */ |
6811 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6812 | if (filter->map[direct].name) |
6813 | XFREE(MTYPE_BGP_FILTER_NAME, filter->map[direct].name); | |
b4897fa5 | 6814 | route_map_counter_decrement(filter->map[direct].map); |
d62a17ae | 6815 | filter->map[direct].name = NULL; |
6816 | filter->map[direct].map = NULL; | |
70ee29b4 PM |
6817 | |
6818 | /* Process peer route updates. */ | |
6819 | peer_on_policy_change(member, afi, safi, | |
d62a17ae | 6820 | (direct == RMAP_OUT) ? 1 : 0); |
6821 | } | |
70ee29b4 | 6822 | |
d62a17ae | 6823 | return 0; |
6824 | } | |
6825 | ||
6826 | /* Set unsuppress-map to the peer. */ | |
6827 | int peer_unsuppress_map_set(struct peer *peer, afi_t afi, safi_t safi, | |
1de27621 | 6828 | const char *name, struct route_map *route_map) |
d62a17ae | 6829 | { |
70ee29b4 | 6830 | struct peer *member; |
d62a17ae | 6831 | struct bgp_filter *filter; |
d62a17ae | 6832 | struct listnode *node, *nnode; |
6833 | ||
70ee29b4 | 6834 | /* Set configuration on peer. */ |
d62a17ae | 6835 | filter = &peer->filter[afi][safi]; |
d62a17ae | 6836 | if (filter->usmap.name) |
6837 | XFREE(MTYPE_BGP_FILTER_NAME, filter->usmap.name); | |
b4897fa5 | 6838 | route_map_counter_decrement(filter->usmap.map); |
d62a17ae | 6839 | filter->usmap.name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); |
1de27621 | 6840 | filter->usmap.map = route_map; |
b4897fa5 | 6841 | route_map_counter_increment(route_map); |
d62a17ae | 6842 | |
70ee29b4 | 6843 | /* Check if handling a regular peer. */ |
d62a17ae | 6844 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 PM |
6845 | /* Set override-flag and process peer route updates. */ |
6846 | SET_FLAG(peer->filter_override[afi][safi][0], | |
6847 | PEER_FT_UNSUPPRESS_MAP); | |
d62a17ae | 6848 | peer_on_policy_change(peer, afi, safi, 1); |
70ee29b4 PM |
6849 | |
6850 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6851 | return 0; |
6852 | } | |
6853 | ||
70ee29b4 PM |
6854 | /* |
6855 | * Set configuration on all peer-group members, unless they are | |
6856 | * explicitely overriding peer-group configuration. | |
6857 | */ | |
6858 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6859 | /* Skip peers with overridden configuration. */ | |
246bb5f0 | 6860 | if (CHECK_FLAG(member->filter_override[afi][safi][0], |
70ee29b4 PM |
6861 | PEER_FT_UNSUPPRESS_MAP)) |
6862 | continue; | |
d62a17ae | 6863 | |
70ee29b4 PM |
6864 | /* Set configuration on peer-group member. */ |
6865 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6866 | if (filter->usmap.name) |
6867 | XFREE(MTYPE_BGP_FILTER_NAME, filter->usmap.name); | |
b4897fa5 | 6868 | route_map_counter_decrement(filter->usmap.map); |
d62a17ae | 6869 | filter->usmap.name = XSTRDUP(MTYPE_BGP_FILTER_NAME, name); |
1de27621 | 6870 | filter->usmap.map = route_map; |
b4897fa5 | 6871 | route_map_counter_increment(route_map); |
70ee29b4 PM |
6872 | |
6873 | /* Process peer route updates. */ | |
6874 | peer_on_policy_change(member, afi, safi, 1); | |
d62a17ae | 6875 | } |
70ee29b4 | 6876 | |
d62a17ae | 6877 | return 0; |
6878 | } | |
6879 | ||
6880 | /* Unset route-map from the peer. */ | |
6881 | int peer_unsuppress_map_unset(struct peer *peer, afi_t afi, safi_t safi) | |
718e3744 | 6882 | { |
70ee29b4 | 6883 | struct peer *member; |
d62a17ae | 6884 | struct bgp_filter *filter; |
d62a17ae | 6885 | struct listnode *node, *nnode; |
6886 | ||
70ee29b4 PM |
6887 | /* Unset override-flag unconditionally. */ |
6888 | UNSET_FLAG(peer->filter_override[afi][safi][0], PEER_FT_UNSUPPRESS_MAP); | |
718e3744 | 6889 | |
70ee29b4 PM |
6890 | /* Inherit configuration from peer-group if peer is member. */ |
6891 | if (peer_group_active(peer)) { | |
e7103a96 PM |
6892 | PEER_STR_ATTR_INHERIT(peer, peer->group, |
6893 | filter[afi][safi].usmap.name, | |
6894 | MTYPE_BGP_FILTER_NAME); | |
6895 | PEER_ATTR_INHERIT(peer, peer->group, | |
6896 | filter[afi][safi].usmap.map); | |
70ee29b4 PM |
6897 | } else { |
6898 | /* Otherwise remove configuration from peer. */ | |
6899 | filter = &peer->filter[afi][safi]; | |
6900 | if (filter->usmap.name) | |
6901 | XFREE(MTYPE_BGP_FILTER_NAME, filter->usmap.name); | |
b4897fa5 | 6902 | route_map_counter_decrement(filter->usmap.map); |
70ee29b4 PM |
6903 | filter->usmap.name = NULL; |
6904 | filter->usmap.map = NULL; | |
6905 | } | |
718e3744 | 6906 | |
70ee29b4 | 6907 | /* Check if handling a regular peer. */ |
d62a17ae | 6908 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
70ee29b4 | 6909 | /* Process peer route updates. */ |
d62a17ae | 6910 | peer_on_policy_change(peer, afi, safi, 1); |
70ee29b4 PM |
6911 | |
6912 | /* Skip peer-group mechanics for regular peers. */ | |
d62a17ae | 6913 | return 0; |
6914 | } | |
718e3744 | 6915 | |
70ee29b4 PM |
6916 | /* |
6917 | * Remove configuration on all peer-group members, unless they are | |
6918 | * explicitely overriding peer-group configuration. | |
6919 | */ | |
6920 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
6921 | /* Skip peers with overridden configuration. */ | |
6922 | if (CHECK_FLAG(member->filter_override[afi][safi][0], | |
6923 | PEER_FT_UNSUPPRESS_MAP)) | |
6924 | continue; | |
718e3744 | 6925 | |
70ee29b4 PM |
6926 | /* Remove configuration on peer-group member. */ |
6927 | filter = &member->filter[afi][safi]; | |
d62a17ae | 6928 | if (filter->usmap.name) |
6929 | XFREE(MTYPE_BGP_FILTER_NAME, filter->usmap.name); | |
b4897fa5 | 6930 | route_map_counter_decrement(filter->usmap.map); |
d62a17ae | 6931 | filter->usmap.name = NULL; |
6932 | filter->usmap.map = NULL; | |
70ee29b4 PM |
6933 | |
6934 | /* Process peer route updates. */ | |
6935 | peer_on_policy_change(member, afi, safi, 1); | |
d62a17ae | 6936 | } |
70ee29b4 | 6937 | |
d62a17ae | 6938 | return 0; |
6939 | } | |
718e3744 | 6940 | |
fa36596c MK |
6941 | static void peer_advertise_map_filter_update(struct peer *peer, afi_t afi, |
6942 | safi_t safi, const char *amap_name, | |
6943 | struct route_map *amap, | |
6944 | const char *cmap_name, | |
6945 | struct route_map *cmap, | |
6946 | bool condition, bool set) | |
cf2ad4d8 MK |
6947 | { |
6948 | struct bgp_filter *filter; | |
6949 | bool filter_exists = false; | |
6950 | ||
6951 | filter = &peer->filter[afi][safi]; | |
6952 | ||
fa36596c MK |
6953 | /* advertise-map is already configured. */ |
6954 | if (filter->advmap.aname) { | |
6955 | filter_exists = true; | |
6956 | XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.aname); | |
6957 | XFREE(MTYPE_BGP_FILTER_NAME, filter->advmap.cname); | |
6958 | } | |
cf2ad4d8 | 6959 | |
fa36596c | 6960 | route_map_counter_decrement(filter->advmap.amap); |
cf2ad4d8 | 6961 | |
fa36596c MK |
6962 | /* Removed advertise-map configuration */ |
6963 | if (!set) { | |
5b083e4e | 6964 | memset(&filter->advmap, 0, sizeof(filter->advmap)); |
cf2ad4d8 | 6965 | |
fa36596c MK |
6966 | /* decrement condition_filter_count delete timer if |
6967 | * this is the last advertise-map to be removed. | |
6968 | */ | |
6969 | if (filter_exists) | |
6970 | bgp_conditional_adv_disable(peer, afi, safi); | |
cf2ad4d8 | 6971 | |
fa36596c MK |
6972 | return; |
6973 | } | |
6974 | ||
6975 | /* Update filter data with newly configured values. */ | |
6976 | filter->advmap.aname = XSTRDUP(MTYPE_BGP_FILTER_NAME, amap_name); | |
6977 | filter->advmap.cname = XSTRDUP(MTYPE_BGP_FILTER_NAME, cmap_name); | |
6978 | filter->advmap.amap = amap; | |
6979 | filter->advmap.cmap = cmap; | |
6980 | filter->advmap.condition = condition; | |
6981 | route_map_counter_increment(filter->advmap.amap); | |
6982 | peer->advmap_config_change[afi][safi] = true; | |
6983 | ||
6984 | /* Increment condition_filter_count and/or create timer. */ | |
6985 | if (!filter_exists) { | |
6986 | filter->advmap.update_type = ADVERTISE; | |
6987 | bgp_conditional_adv_enable(peer, afi, safi); | |
cf2ad4d8 MK |
6988 | } |
6989 | } | |
6990 | ||
7f7940e6 MK |
6991 | /* Set advertise-map to the peer but do not process peer route updates here. * |
6992 | * Hold filter changes until the conditional routes polling thread is called * | |
6993 | * AS we need to advertise/withdraw prefixes (in advertise-map) based on the * | |
6994 | * condition (exist-map/non-exist-map) and routes(specified in condition-map) * | |
6995 | * in BGP table. So do not call peer_on_policy_change() here, only create * | |
6996 | * polling timer thread, update filters and increment condition_filter_count. | |
6997 | */ | |
6998 | int peer_advertise_map_set(struct peer *peer, afi_t afi, safi_t safi, | |
6999 | const char *advertise_name, | |
cf2ad4d8 | 7000 | struct route_map *advertise_map, |
7f7940e6 | 7001 | const char *condition_name, |
cf2ad4d8 | 7002 | struct route_map *condition_map, bool condition) |
7f7940e6 | 7003 | { |
7f7940e6 | 7004 | struct peer *member; |
7f7940e6 MK |
7005 | struct listnode *node, *nnode; |
7006 | ||
cf2ad4d8 | 7007 | /* Set configuration on peer. */ |
fa36596c MK |
7008 | peer_advertise_map_filter_update(peer, afi, safi, advertise_name, |
7009 | advertise_map, condition_name, | |
7010 | condition_map, condition, true); | |
7f7940e6 | 7011 | |
cf2ad4d8 | 7012 | /* Check if handling a regular peer & Skip peer-group mechanics. */ |
7f7940e6 MK |
7013 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
7014 | /* Set override-flag and process peer route updates. */ | |
7015 | SET_FLAG(peer->filter_override[afi][safi][RMAP_OUT], | |
7016 | PEER_FT_ADVERTISE_MAP); | |
7f7940e6 MK |
7017 | return 0; |
7018 | } | |
7019 | ||
7020 | /* | |
7021 | * Set configuration on all peer-group members, unless they are | |
7022 | * explicitely overriding peer-group configuration. | |
7023 | */ | |
7024 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
7025 | /* Skip peers with overridden configuration. */ | |
7026 | if (CHECK_FLAG(member->filter_override[afi][safi][RMAP_OUT], | |
7027 | PEER_FT_ADVERTISE_MAP)) | |
7028 | continue; | |
7029 | ||
7030 | /* Set configuration on peer-group member. */ | |
fa36596c MK |
7031 | peer_advertise_map_filter_update( |
7032 | member, afi, safi, advertise_name, advertise_map, | |
7033 | condition_name, condition_map, condition, true); | |
7f7940e6 MK |
7034 | } |
7035 | ||
7036 | return 0; | |
7037 | } | |
7038 | ||
7039 | /* Unset advertise-map from the peer. */ | |
7040 | int peer_advertise_map_unset(struct peer *peer, afi_t afi, safi_t safi, | |
7041 | const char *advertise_name, | |
cf2ad4d8 | 7042 | struct route_map *advertise_map, |
7f7940e6 | 7043 | const char *condition_name, |
cf2ad4d8 | 7044 | struct route_map *condition_map, bool condition) |
7f7940e6 | 7045 | { |
7f7940e6 | 7046 | struct peer *member; |
7f7940e6 MK |
7047 | struct listnode *node, *nnode; |
7048 | ||
fa36596c MK |
7049 | /* advertise-map is not configured */ |
7050 | if (!peer->filter[afi][safi].advmap.aname) | |
7051 | return 0; | |
cf2ad4d8 | 7052 | |
7f7940e6 MK |
7053 | /* Unset override-flag unconditionally. */ |
7054 | UNSET_FLAG(peer->filter_override[afi][safi][RMAP_OUT], | |
7055 | PEER_FT_ADVERTISE_MAP); | |
7056 | ||
7057 | /* Inherit configuration from peer-group if peer is member. */ | |
7058 | if (peer_group_active(peer)) { | |
7059 | PEER_STR_ATTR_INHERIT(peer, peer->group, | |
7060 | filter[afi][safi].advmap.aname, | |
7061 | MTYPE_BGP_FILTER_NAME); | |
7062 | PEER_ATTR_INHERIT(peer, peer->group, | |
7063 | filter[afi][safi].advmap.amap); | |
cf2ad4d8 | 7064 | } else |
fa36596c MK |
7065 | peer_advertise_map_filter_update( |
7066 | peer, afi, safi, advertise_name, advertise_map, | |
7067 | condition_name, condition_map, condition, false); | |
7f7940e6 | 7068 | |
cf2ad4d8 | 7069 | /* Check if handling a regular peer and skip peer-group mechanics. */ |
7f7940e6 MK |
7070 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
7071 | /* Process peer route updates. */ | |
e73c112e MK |
7072 | if (BGP_DEBUG(update, UPDATE_OUT)) |
7073 | zlog_debug("%s: Send normal update to %s for %s", | |
7074 | __func__, peer->host, | |
7075 | get_afi_safi_str(afi, safi, false)); | |
7076 | ||
7f7940e6 | 7077 | peer_on_policy_change(peer, afi, safi, 1); |
7f7940e6 MK |
7078 | return 0; |
7079 | } | |
7080 | ||
7081 | /* | |
7082 | * Remove configuration on all peer-group members, unless they are | |
7083 | * explicitely overriding peer-group configuration. | |
7084 | */ | |
7085 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
7086 | /* Skip peers with overridden configuration. */ | |
7087 | if (CHECK_FLAG(member->filter_override[afi][safi][RMAP_OUT], | |
7088 | PEER_FT_ADVERTISE_MAP)) | |
7089 | continue; | |
7f7940e6 | 7090 | /* Remove configuration on peer-group member. */ |
fa36596c MK |
7091 | peer_advertise_map_filter_update( |
7092 | member, afi, safi, advertise_name, advertise_map, | |
7093 | condition_name, condition_map, condition, false); | |
7f7940e6 MK |
7094 | |
7095 | /* Process peer route updates. */ | |
e73c112e MK |
7096 | if (BGP_DEBUG(update, UPDATE_OUT)) |
7097 | zlog_debug("%s: Send normal update to %s for %s ", | |
7098 | __func__, member->host, | |
7099 | get_afi_safi_str(afi, safi, false)); | |
7100 | ||
7f7940e6 MK |
7101 | peer_on_policy_change(member, afi, safi, 1); |
7102 | } | |
7103 | ||
7104 | return 0; | |
7105 | } | |
7106 | ||
ac4522e6 DM |
7107 | static bool peer_maximum_prefix_clear_overflow(struct peer *peer) |
7108 | { | |
7109 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_PREFIX_OVERFLOW)) | |
7110 | return false; | |
7111 | ||
7112 | UNSET_FLAG(peer->sflags, PEER_STATUS_PREFIX_OVERFLOW); | |
7113 | if (peer->t_pmax_restart) { | |
7114 | BGP_TIMER_OFF(peer->t_pmax_restart); | |
7115 | if (bgp_debug_neighbor_events(peer)) | |
7116 | zlog_debug("%s Maximum-prefix restart timer cancelled", | |
7117 | peer->host); | |
7118 | } | |
7119 | BGP_EVENT_ADD(peer, BGP_Start); | |
7120 | return true; | |
7121 | } | |
7122 | ||
d62a17ae | 7123 | int peer_maximum_prefix_set(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 7124 | uint32_t max, uint8_t threshold, int warning, |
9cbd06e0 | 7125 | uint16_t restart, bool force) |
d62a17ae | 7126 | { |
598ce6bd | 7127 | struct peer *member; |
d62a17ae | 7128 | struct listnode *node, *nnode; |
7129 | ||
598ce6bd PM |
7130 | /* Set flags and configuration on peer. */ |
7131 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_MAX_PREFIX); | |
9cbd06e0 DA |
7132 | |
7133 | if (force) | |
7134 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_MAX_PREFIX_FORCE); | |
7135 | else | |
7136 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_MAX_PREFIX_FORCE); | |
7137 | ||
d62a17ae | 7138 | if (warning) |
598ce6bd | 7139 | peer_af_flag_set(peer, afi, safi, PEER_FLAG_MAX_PREFIX_WARNING); |
d62a17ae | 7140 | else |
598ce6bd PM |
7141 | peer_af_flag_unset(peer, afi, safi, |
7142 | PEER_FLAG_MAX_PREFIX_WARNING); | |
7143 | ||
04e1c5bb QY |
7144 | peer->pmax[afi][safi] = max; |
7145 | peer->pmax_threshold[afi][safi] = threshold; | |
7146 | peer->pmax_restart[afi][safi] = restart; | |
d62a17ae | 7147 | |
598ce6bd PM |
7148 | /* Check if handling a regular peer. */ |
7149 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
7150 | /* Re-check if peer violates maximum-prefix. */ | |
feb17238 | 7151 | if ((peer_established(peer)) && (peer->afc[afi][safi])) |
d62a17ae | 7152 | bgp_maximum_prefix_overflow(peer, afi, safi, 1); |
04e1c5bb | 7153 | |
598ce6bd PM |
7154 | /* Skip peer-group mechanics for regular peers. */ |
7155 | return 0; | |
7156 | } | |
04e1c5bb | 7157 | |
598ce6bd PM |
7158 | /* |
7159 | * Set flags and configuration on all peer-group members, unless they | |
7160 | * are explicitely overriding peer-group configuration. | |
7161 | */ | |
7162 | for (ALL_LIST_ELEMENTS(peer->group->peer, node, nnode, member)) { | |
7163 | /* Skip peers with overridden configuration. */ | |
7164 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
7165 | PEER_FLAG_MAX_PREFIX)) | |
7166 | continue; | |
04e1c5bb | 7167 | |
598ce6bd PM |
7168 | /* Set flag and configuration on peer-group member. */ |
7169 | member->pmax[afi][safi] = max; | |
7170 | member->pmax_threshold[afi][safi] = threshold; | |
7171 | member->pmax_restart[afi][safi] = restart; | |
9cbd06e0 DA |
7172 | |
7173 | if (force) | |
7174 | SET_FLAG(member->af_flags[afi][safi], | |
7175 | PEER_FLAG_MAX_PREFIX_FORCE); | |
7176 | else | |
7177 | UNSET_FLAG(member->af_flags[afi][safi], | |
7178 | PEER_FLAG_MAX_PREFIX_FORCE); | |
7179 | ||
04e1c5bb | 7180 | if (warning) |
598ce6bd | 7181 | SET_FLAG(member->af_flags[afi][safi], |
04e1c5bb QY |
7182 | PEER_FLAG_MAX_PREFIX_WARNING); |
7183 | else | |
598ce6bd | 7184 | UNSET_FLAG(member->af_flags[afi][safi], |
04e1c5bb | 7185 | PEER_FLAG_MAX_PREFIX_WARNING); |
598ce6bd PM |
7186 | |
7187 | /* Re-check if peer violates maximum-prefix. */ | |
feb17238 | 7188 | if ((peer_established(member)) && (member->afc[afi][safi])) |
598ce6bd | 7189 | bgp_maximum_prefix_overflow(member, afi, safi, 1); |
d62a17ae | 7190 | } |
718e3744 | 7191 | |
d62a17ae | 7192 | return 0; |
7193 | } | |
718e3744 | 7194 | |
d62a17ae | 7195 | int peer_maximum_prefix_unset(struct peer *peer, afi_t afi, safi_t safi) |
7196 | { | |
598ce6bd PM |
7197 | /* Inherit configuration from peer-group if peer is member. */ |
7198 | if (peer_group_active(peer)) { | |
7199 | peer_af_flag_inherit(peer, afi, safi, PEER_FLAG_MAX_PREFIX); | |
9cbd06e0 DA |
7200 | peer_af_flag_inherit(peer, afi, safi, |
7201 | PEER_FLAG_MAX_PREFIX_FORCE); | |
598ce6bd PM |
7202 | peer_af_flag_inherit(peer, afi, safi, |
7203 | PEER_FLAG_MAX_PREFIX_WARNING); | |
e7103a96 PM |
7204 | PEER_ATTR_INHERIT(peer, peer->group, pmax[afi][safi]); |
7205 | PEER_ATTR_INHERIT(peer, peer->group, pmax_threshold[afi][safi]); | |
7206 | PEER_ATTR_INHERIT(peer, peer->group, pmax_restart[afi][safi]); | |
04e1c5bb | 7207 | |
d62a17ae | 7208 | return 0; |
04e1c5bb | 7209 | } |
d62a17ae | 7210 | |
598ce6bd PM |
7211 | /* Remove flags and configuration from peer. */ |
7212 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_MAX_PREFIX); | |
9cbd06e0 | 7213 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_MAX_PREFIX_FORCE); |
598ce6bd PM |
7214 | peer_af_flag_unset(peer, afi, safi, PEER_FLAG_MAX_PREFIX_WARNING); |
7215 | peer->pmax[afi][safi] = 0; | |
7216 | peer->pmax_threshold[afi][safi] = 0; | |
7217 | peer->pmax_restart[afi][safi] = 0; | |
7218 | ||
04e1c5bb | 7219 | /* |
598ce6bd PM |
7220 | * Remove flags and configuration from all peer-group members, unless |
7221 | * they are explicitely overriding peer-group configuration. | |
04e1c5bb | 7222 | */ |
6282637d RW |
7223 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
7224 | struct peer *member; | |
7225 | struct listnode *node; | |
598ce6bd | 7226 | |
6282637d RW |
7227 | for (ALL_LIST_ELEMENTS_RO(peer->group->peer, node, member)) { |
7228 | /* Skip peers with overridden configuration. */ | |
7229 | if (CHECK_FLAG(member->af_flags_override[afi][safi], | |
7230 | PEER_FLAG_MAX_PREFIX)) | |
7231 | continue; | |
7232 | ||
7233 | /* Remove flag and configuration on peer-group member. | |
7234 | */ | |
7235 | UNSET_FLAG(member->af_flags[afi][safi], | |
7236 | PEER_FLAG_MAX_PREFIX); | |
9cbd06e0 DA |
7237 | UNSET_FLAG(member->af_flags[afi][safi], |
7238 | PEER_FLAG_MAX_PREFIX_FORCE); | |
6282637d RW |
7239 | UNSET_FLAG(member->af_flags[afi][safi], |
7240 | PEER_FLAG_MAX_PREFIX_WARNING); | |
7241 | member->pmax[afi][safi] = 0; | |
7242 | member->pmax_threshold[afi][safi] = 0; | |
7243 | member->pmax_restart[afi][safi] = 0; | |
ac4522e6 DM |
7244 | |
7245 | peer_maximum_prefix_clear_overflow(member); | |
6282637d | 7246 | } |
ac4522e6 DM |
7247 | } else { |
7248 | peer_maximum_prefix_clear_overflow(peer); | |
d62a17ae | 7249 | } |
598ce6bd | 7250 | |
d62a17ae | 7251 | return 0; |
718e3744 | 7252 | } |
7253 | ||
d62a17ae | 7254 | int is_ebgp_multihop_configured(struct peer *peer) |
718e3744 | 7255 | { |
d62a17ae | 7256 | struct peer_group *group; |
7257 | struct listnode *node, *nnode; | |
7258 | struct peer *peer1; | |
718e3744 | 7259 | |
d62a17ae | 7260 | if (CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { |
7261 | group = peer->group; | |
7262 | if ((peer_sort(peer) != BGP_PEER_IBGP) | |
c8d6f0d6 | 7263 | && (group->conf->ttl != BGP_DEFAULT_TTL)) |
d62a17ae | 7264 | return 1; |
718e3744 | 7265 | |
d62a17ae | 7266 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer1)) { |
7267 | if ((peer_sort(peer1) != BGP_PEER_IBGP) | |
c8d6f0d6 | 7268 | && (peer1->ttl != BGP_DEFAULT_TTL)) |
d62a17ae | 7269 | return 1; |
7270 | } | |
7271 | } else { | |
c8d6f0d6 DA |
7272 | if ((peer_sort(peer) != BGP_PEER_IBGP) |
7273 | && (peer->ttl != BGP_DEFAULT_TTL)) | |
d62a17ae | 7274 | return 1; |
7275 | } | |
7276 | return 0; | |
7277 | } | |
718e3744 | 7278 | |
d62a17ae | 7279 | /* Set # of hops between us and BGP peer. */ |
7280 | int peer_ttl_security_hops_set(struct peer *peer, int gtsm_hops) | |
7281 | { | |
7282 | struct peer_group *group; | |
4ec7a71a | 7283 | struct peer *gpeer; |
d62a17ae | 7284 | struct listnode *node, *nnode; |
7285 | int ret; | |
7286 | ||
84c320dc DA |
7287 | zlog_debug("%s: set gtsm_hops to %d for %s", __func__, gtsm_hops, |
7288 | peer->host); | |
d62a17ae | 7289 | |
7290 | /* We cannot configure ttl-security hops when ebgp-multihop is already | |
7291 | set. For non peer-groups, the check is simple. For peer-groups, | |
7292 | it's | |
7293 | slightly messy, because we need to check both the peer-group | |
7294 | structure | |
7295 | and all peer-group members for any trace of ebgp-multihop | |
7296 | configuration | |
7297 | before actually applying the ttl-security rules. Cisco really made a | |
7298 | mess of this configuration parameter, and OpenBGPD got it right. | |
7299 | */ | |
7300 | ||
e2521429 DA |
7301 | if ((peer->gtsm_hops == BGP_GTSM_HOPS_DISABLED) |
7302 | && (peer->sort != BGP_PEER_IBGP)) { | |
d62a17ae | 7303 | if (is_ebgp_multihop_configured(peer)) |
7304 | return BGP_ERR_NO_EBGP_MULTIHOP_WITH_TTLHACK; | |
7305 | ||
7306 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
7307 | peer->gtsm_hops = gtsm_hops; | |
7308 | ||
7309 | /* Calling ebgp multihop also resets the session. | |
7310 | * On restart, NHT will get setup correctly as will the | |
7311 | * min & max ttls on the socket. The return value is | |
7312 | * irrelevant. | |
7313 | */ | |
7314 | ret = peer_ebgp_multihop_set(peer, MAXTTL); | |
7315 | ||
7316 | if (ret != 0) | |
7317 | return ret; | |
7318 | } else { | |
7319 | group = peer->group; | |
4ec7a71a | 7320 | group->conf->gtsm_hops = gtsm_hops; |
d62a17ae | 7321 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, |
4ec7a71a DS |
7322 | gpeer)) { |
7323 | gpeer->gtsm_hops = group->conf->gtsm_hops; | |
d62a17ae | 7324 | |
7325 | /* Calling ebgp multihop also resets the | |
7326 | * session. | |
7327 | * On restart, NHT will get setup correctly as | |
7328 | * will the | |
7329 | * min & max ttls on the socket. The return | |
7330 | * value is | |
7331 | * irrelevant. | |
7332 | */ | |
4ec7a71a | 7333 | peer_ebgp_multihop_set(gpeer, MAXTTL); |
d62a17ae | 7334 | } |
7335 | } | |
7336 | } else { | |
7337 | /* Post the first gtsm setup or if its ibgp, maxttl setting | |
7338 | * isn't | |
7339 | * necessary, just set the minttl. | |
7340 | */ | |
7341 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
7342 | peer->gtsm_hops = gtsm_hops; | |
7343 | ||
7344 | if (peer->fd >= 0) | |
7345 | sockopt_minttl(peer->su.sa.sa_family, peer->fd, | |
7346 | MAXTTL + 1 - gtsm_hops); | |
7347 | if ((peer->status < Established) && peer->doppelganger | |
7348 | && (peer->doppelganger->fd >= 0)) | |
7349 | sockopt_minttl(peer->su.sa.sa_family, | |
7350 | peer->doppelganger->fd, | |
7351 | MAXTTL + 1 - gtsm_hops); | |
7352 | } else { | |
7353 | group = peer->group; | |
4ec7a71a | 7354 | group->conf->gtsm_hops = gtsm_hops; |
d62a17ae | 7355 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, |
4ec7a71a DS |
7356 | gpeer)) { |
7357 | gpeer->gtsm_hops = group->conf->gtsm_hops; | |
d62a17ae | 7358 | |
7359 | /* Change setting of existing peer | |
7360 | * established then change value (may break | |
7361 | * connectivity) | |
7362 | * not established yet (teardown session and | |
7363 | * restart) | |
7364 | * no session then do nothing (will get | |
7365 | * handled by next connection) | |
7366 | */ | |
4ec7a71a DS |
7367 | if (gpeer->fd >= 0 |
7368 | && gpeer->gtsm_hops | |
e2521429 | 7369 | != BGP_GTSM_HOPS_DISABLED) |
d62a17ae | 7370 | sockopt_minttl( |
4ec7a71a DS |
7371 | gpeer->su.sa.sa_family, |
7372 | gpeer->fd, | |
7373 | MAXTTL + 1 - gpeer->gtsm_hops); | |
7374 | if ((gpeer->status < Established) | |
7375 | && gpeer->doppelganger | |
7376 | && (gpeer->doppelganger->fd >= 0)) | |
7377 | sockopt_minttl(gpeer->su.sa.sa_family, | |
7378 | gpeer->doppelganger->fd, | |
d62a17ae | 7379 | MAXTTL + 1 - gtsm_hops); |
7380 | } | |
7381 | } | |
7382 | } | |
718e3744 | 7383 | |
d62a17ae | 7384 | return 0; |
718e3744 | 7385 | } |
7386 | ||
d62a17ae | 7387 | int peer_ttl_security_hops_unset(struct peer *peer) |
7388 | { | |
7389 | struct peer_group *group; | |
7390 | struct listnode *node, *nnode; | |
7391 | int ret = 0; | |
7392 | ||
84c320dc | 7393 | zlog_debug("%s: set gtsm_hops to zero for %s", __func__, peer->host); |
d62a17ae | 7394 | |
7395 | /* if a peer-group member, then reset to peer-group default rather than | |
7396 | * 0 */ | |
7397 | if (peer_group_active(peer)) | |
7398 | peer->gtsm_hops = peer->group->conf->gtsm_hops; | |
7399 | else | |
e2521429 | 7400 | peer->gtsm_hops = BGP_GTSM_HOPS_DISABLED; |
d62a17ae | 7401 | |
7402 | if (!CHECK_FLAG(peer->sflags, PEER_STATUS_GROUP)) { | |
7403 | /* Invoking ebgp_multihop_set will set the TTL back to the | |
7404 | * original | |
7405 | * value as well as restting the NHT and such. The session is | |
7406 | * reset. | |
7407 | */ | |
7408 | if (peer->sort == BGP_PEER_EBGP) | |
7409 | ret = peer_ebgp_multihop_unset(peer); | |
7410 | else { | |
7411 | if (peer->fd >= 0) | |
7412 | sockopt_minttl(peer->su.sa.sa_family, peer->fd, | |
7413 | 0); | |
7414 | ||
7415 | if ((peer->status < Established) && peer->doppelganger | |
7416 | && (peer->doppelganger->fd >= 0)) | |
7417 | sockopt_minttl(peer->su.sa.sa_family, | |
7418 | peer->doppelganger->fd, 0); | |
7419 | } | |
7420 | } else { | |
7421 | group = peer->group; | |
7422 | for (ALL_LIST_ELEMENTS(group->peer, node, nnode, peer)) { | |
e2521429 | 7423 | peer->gtsm_hops = BGP_GTSM_HOPS_DISABLED; |
d62a17ae | 7424 | if (peer->sort == BGP_PEER_EBGP) |
7425 | ret = peer_ebgp_multihop_unset(peer); | |
7426 | else { | |
7427 | if (peer->fd >= 0) | |
7428 | sockopt_minttl(peer->su.sa.sa_family, | |
7429 | peer->fd, 0); | |
7430 | ||
7431 | if ((peer->status < Established) | |
7432 | && peer->doppelganger | |
7433 | && (peer->doppelganger->fd >= 0)) | |
7434 | sockopt_minttl(peer->su.sa.sa_family, | |
7435 | peer->doppelganger->fd, | |
7436 | 0); | |
7437 | } | |
7438 | } | |
7439 | } | |
718e3744 | 7440 | |
d62a17ae | 7441 | return ret; |
7442 | } | |
7443 | ||
7444 | /* | |
7445 | * If peer clear is invoked in a loop for all peers on the BGP instance, | |
7446 | * it may end up freeing the doppelganger, and if this was the next node | |
7447 | * to the current node, we would end up accessing the freed next node. | |
7448 | * Pass along additional parameter which can be updated if next node | |
7449 | * is freed; only required when walking the peer list on BGP instance. | |
7450 | */ | |
7451 | int peer_clear(struct peer *peer, struct listnode **nnode) | |
7452 | { | |
cb9196e7 DS |
7453 | if (!CHECK_FLAG(peer->flags, PEER_FLAG_SHUTDOWN) |
7454 | || !CHECK_FLAG(peer->bgp->flags, BGP_FLAG_SHUTDOWN)) { | |
ac4522e6 | 7455 | if (peer_maximum_prefix_clear_overflow(peer)) |
d62a17ae | 7456 | return 0; |
d62a17ae | 7457 | |
7458 | peer->v_start = BGP_INIT_START_TIMER; | |
7459 | if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status)) | |
7460 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
7461 | BGP_NOTIFY_CEASE_ADMIN_RESET); | |
7462 | else | |
7463 | bgp_session_reset_safe(peer, nnode); | |
718e3744 | 7464 | } |
d62a17ae | 7465 | return 0; |
718e3744 | 7466 | } |
6b0655a2 | 7467 | |
d62a17ae | 7468 | int peer_clear_soft(struct peer *peer, afi_t afi, safi_t safi, |
7469 | enum bgp_clear_type stype) | |
718e3744 | 7470 | { |
d62a17ae | 7471 | struct peer_af *paf; |
718e3744 | 7472 | |
feb17238 | 7473 | if (!peer_established(peer)) |
d62a17ae | 7474 | return 0; |
718e3744 | 7475 | |
d62a17ae | 7476 | if (!peer->afc[afi][safi]) |
7477 | return BGP_ERR_AF_UNCONFIGURED; | |
718e3744 | 7478 | |
d62a17ae | 7479 | peer->rtt = sockopt_tcp_rtt(peer->fd); |
718e3744 | 7480 | |
d62a17ae | 7481 | if (stype == BGP_CLEAR_SOFT_OUT || stype == BGP_CLEAR_SOFT_BOTH) { |
7482 | /* Clear the "neighbor x.x.x.x default-originate" flag */ | |
7483 | paf = peer_af_find(peer, afi, safi); | |
7484 | if (paf && paf->subgroup | |
7485 | && CHECK_FLAG(paf->subgroup->sflags, | |
7486 | SUBGRP_STATUS_DEFAULT_ORIGINATE)) | |
7487 | UNSET_FLAG(paf->subgroup->sflags, | |
7488 | SUBGRP_STATUS_DEFAULT_ORIGINATE); | |
718e3744 | 7489 | |
d62a17ae | 7490 | bgp_announce_route(peer, afi, safi); |
7491 | } | |
718e3744 | 7492 | |
d62a17ae | 7493 | if (stype == BGP_CLEAR_SOFT_IN_ORF_PREFIX) { |
7494 | if (CHECK_FLAG(peer->af_cap[afi][safi], | |
7495 | PEER_CAP_ORF_PREFIX_SM_ADV) | |
7496 | && (CHECK_FLAG(peer->af_cap[afi][safi], | |
7497 | PEER_CAP_ORF_PREFIX_RM_RCV) | |
7498 | || CHECK_FLAG(peer->af_cap[afi][safi], | |
7499 | PEER_CAP_ORF_PREFIX_RM_OLD_RCV))) { | |
7500 | struct bgp_filter *filter = &peer->filter[afi][safi]; | |
d7c0a89a | 7501 | uint8_t prefix_type; |
d62a17ae | 7502 | |
7503 | if (CHECK_FLAG(peer->af_cap[afi][safi], | |
7504 | PEER_CAP_ORF_PREFIX_RM_RCV)) | |
7505 | prefix_type = ORF_TYPE_PREFIX; | |
7506 | else | |
7507 | prefix_type = ORF_TYPE_PREFIX_OLD; | |
7508 | ||
7509 | if (filter->plist[FILTER_IN].plist) { | |
7510 | if (CHECK_FLAG(peer->af_sflags[afi][safi], | |
7511 | PEER_STATUS_ORF_PREFIX_SEND)) | |
7512 | bgp_route_refresh_send( | |
7513 | peer, afi, safi, prefix_type, | |
9af52ccf DA |
7514 | REFRESH_DEFER, 1, |
7515 | BGP_ROUTE_REFRESH_NORMAL); | |
7516 | bgp_route_refresh_send( | |
7517 | peer, afi, safi, prefix_type, | |
7518 | REFRESH_IMMEDIATE, 0, | |
7519 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 7520 | } else { |
7521 | if (CHECK_FLAG(peer->af_sflags[afi][safi], | |
7522 | PEER_STATUS_ORF_PREFIX_SEND)) | |
7523 | bgp_route_refresh_send( | |
7524 | peer, afi, safi, prefix_type, | |
9af52ccf DA |
7525 | REFRESH_IMMEDIATE, 1, |
7526 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 7527 | else |
9af52ccf DA |
7528 | bgp_route_refresh_send( |
7529 | peer, afi, safi, 0, 0, 0, | |
7530 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 7531 | } |
7532 | return 0; | |
7533 | } | |
7534 | } | |
718e3744 | 7535 | |
d62a17ae | 7536 | if (stype == BGP_CLEAR_SOFT_IN || stype == BGP_CLEAR_SOFT_BOTH |
7537 | || stype == BGP_CLEAR_SOFT_IN_ORF_PREFIX) { | |
7538 | /* If neighbor has soft reconfiguration inbound flag. | |
7539 | Use Adj-RIB-In database. */ | |
7540 | if (CHECK_FLAG(peer->af_flags[afi][safi], | |
7541 | PEER_FLAG_SOFT_RECONFIG)) | |
7542 | bgp_soft_reconfig_in(peer, afi, safi); | |
7543 | else { | |
7544 | /* If neighbor has route refresh capability, send route | |
7545 | refresh | |
7546 | message to the peer. */ | |
7547 | if (CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_OLD_RCV) | |
7548 | || CHECK_FLAG(peer->cap, PEER_CAP_REFRESH_NEW_RCV)) | |
9af52ccf DA |
7549 | bgp_route_refresh_send( |
7550 | peer, afi, safi, 0, 0, 0, | |
7551 | BGP_ROUTE_REFRESH_NORMAL); | |
d62a17ae | 7552 | else |
7553 | return BGP_ERR_SOFT_RECONFIG_UNCONFIGURED; | |
7554 | } | |
7555 | } | |
7556 | return 0; | |
718e3744 | 7557 | } |
7558 | ||
d62a17ae | 7559 | /* Display peer uptime.*/ |
9f049418 | 7560 | char *peer_uptime(time_t uptime2, char *buf, size_t len, bool use_json, |
d62a17ae | 7561 | json_object *json) |
7562 | { | |
7563 | time_t uptime1, epoch_tbuf; | |
a2700b50 | 7564 | struct tm tm; |
d62a17ae | 7565 | |
d62a17ae | 7566 | /* If there is no connection has been done before print `never'. */ |
7567 | if (uptime2 == 0) { | |
7568 | if (use_json) { | |
7569 | json_object_string_add(json, "peerUptime", "never"); | |
7570 | json_object_int_add(json, "peerUptimeMsec", 0); | |
7571 | } else | |
7572 | snprintf(buf, len, "never"); | |
7573 | return buf; | |
7574 | } | |
718e3744 | 7575 | |
d62a17ae | 7576 | /* Get current time. */ |
7577 | uptime1 = bgp_clock(); | |
7578 | uptime1 -= uptime2; | |
a2700b50 | 7579 | gmtime_r(&uptime1, &tm); |
718e3744 | 7580 | |
d62a17ae | 7581 | if (uptime1 < ONE_DAY_SECOND) |
a2700b50 MS |
7582 | snprintf(buf, len, "%02d:%02d:%02d", tm.tm_hour, tm.tm_min, |
7583 | tm.tm_sec); | |
d62a17ae | 7584 | else if (uptime1 < ONE_WEEK_SECOND) |
a2700b50 MS |
7585 | snprintf(buf, len, "%dd%02dh%02dm", tm.tm_yday, tm.tm_hour, |
7586 | tm.tm_min); | |
d62a17ae | 7587 | else if (uptime1 < ONE_YEAR_SECOND) |
a2700b50 MS |
7588 | snprintf(buf, len, "%02dw%dd%02dh", tm.tm_yday / 7, |
7589 | tm.tm_yday - ((tm.tm_yday / 7) * 7), tm.tm_hour); | |
d62a17ae | 7590 | else |
a2700b50 MS |
7591 | snprintf(buf, len, "%02dy%02dw%dd", tm.tm_year - 70, |
7592 | tm.tm_yday / 7, | |
7593 | tm.tm_yday - ((tm.tm_yday / 7) * 7)); | |
d62a17ae | 7594 | |
7595 | if (use_json) { | |
7596 | epoch_tbuf = time(NULL) - uptime1; | |
7597 | json_object_string_add(json, "peerUptime", buf); | |
7598 | json_object_int_add(json, "peerUptimeMsec", uptime1 * 1000); | |
7599 | json_object_int_add(json, "peerUptimeEstablishedEpoch", | |
7600 | epoch_tbuf); | |
7601 | } | |
718e3744 | 7602 | |
d62a17ae | 7603 | return buf; |
718e3744 | 7604 | } |
7605 | ||
85e9cd9a AMR |
7606 | void bgp_master_init(struct thread_master *master, const int buffer_size, |
7607 | struct list *addresses) | |
718e3744 | 7608 | { |
d62a17ae | 7609 | qobj_init(); |
0e64d123 | 7610 | |
d62a17ae | 7611 | memset(&bgp_master, 0, sizeof(struct bgp_master)); |
718e3744 | 7612 | |
d62a17ae | 7613 | bm = &bgp_master; |
7614 | bm->bgp = list_new(); | |
7615 | bm->listen_sockets = list_new(); | |
7616 | bm->port = BGP_PORT_DEFAULT; | |
85e9cd9a | 7617 | bm->addresses = addresses; |
d62a17ae | 7618 | bm->master = master; |
7619 | bm->start_time = bgp_clock(); | |
7620 | bm->t_rmap_update = NULL; | |
7621 | bm->rmap_update_timer = RMAP_DEFAULT_UPDATE_TIMER; | |
d70583f7 D |
7622 | bm->v_update_delay = BGP_UPDATE_DELAY_DEF; |
7623 | bm->v_establish_wait = BGP_UPDATE_DELAY_DEF; | |
97b4a0ec | 7624 | bm->terminating = false; |
c2d020ad | 7625 | bm->socket_buffer = buffer_size; |
9acb67cb | 7626 | bm->wait_for_fib = false; |
495f0b13 | 7627 | |
ec0acb80 DA |
7628 | SET_FLAG(bm->flags, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA); |
7629 | ||
48ecf8f5 | 7630 | bgp_mac_init(); |
e9eb5f63 | 7631 | /* init the rd id space. |
7632 | assign 0th index in the bitfield, | |
523cafc4 | 7633 | so that we start with id 1 |
7634 | */ | |
e9eb5f63 | 7635 | bf_init(bm->rd_idspace, UINT16_MAX); |
7636 | bf_assign_zero_index(bm->rd_idspace); | |
7637 | ||
955bfd98 | 7638 | /* mpls label dynamic allocation pool */ |
e70e9f8e | 7639 | bgp_lp_init(bm->master, &bm->labelpool); |
955bfd98 | 7640 | |
c589d847 | 7641 | bgp_l3nhg_init(); |
c44ab6f1 | 7642 | bgp_evpn_mh_init(); |
d62a17ae | 7643 | QOBJ_REG(bm, bgp_master); |
718e3744 | 7644 | } |
200df115 | 7645 | |
ad4cbda1 | 7646 | /* |
009b18fc | 7647 | * Free up connected routes and interfaces for a BGP instance. Invoked upon |
7648 | * instance delete (non-default only) or BGP exit. | |
ad4cbda1 | 7649 | */ |
d62a17ae | 7650 | static void bgp_if_finish(struct bgp *bgp) |
ad4cbda1 | 7651 | { |
ee66b77f | 7652 | struct vrf *vrf; |
d62a17ae | 7653 | struct interface *ifp; |
7654 | ||
ee66b77f PG |
7655 | vrf = bgp_vrf_lookup_by_instance_type(bgp); |
7656 | ||
f4e14fdb | 7657 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VIEW || !vrf) |
d62a17ae | 7658 | return; |
ad4cbda1 | 7659 | |
451fda4f | 7660 | FOR_ALL_INTERFACES (vrf, ifp) { |
d62a17ae | 7661 | struct listnode *c_node, *c_nnode; |
7662 | struct connected *c; | |
ad4cbda1 | 7663 | |
d62a17ae | 7664 | for (ALL_LIST_ELEMENTS(ifp->connected, c_node, c_nnode, c)) |
7665 | bgp_connected_delete(bgp, c); | |
7666 | } | |
ad4cbda1 | 7667 | } |
6b0655a2 | 7668 | |
d62a17ae | 7669 | static void bgp_viewvrf_autocomplete(vector comps, struct cmd_token *token) |
18c57037 | 7670 | { |
d62a17ae | 7671 | struct vrf *vrf = NULL; |
7672 | struct listnode *next; | |
7673 | struct bgp *bgp; | |
18c57037 | 7674 | |
6a8ca00f PG |
7675 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
7676 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, vrf->name)); | |
18c57037 | 7677 | |
d62a17ae | 7678 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { |
7679 | if (bgp->inst_type != BGP_INSTANCE_TYPE_VIEW) | |
7680 | continue; | |
18c57037 | 7681 | |
d62a17ae | 7682 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, bgp->name)); |
7683 | } | |
18c57037 DS |
7684 | } |
7685 | ||
2ed9fe4a DL |
7686 | static void bgp_instasn_autocomplete(vector comps, struct cmd_token *token) |
7687 | { | |
7688 | struct listnode *next, *next2; | |
7689 | struct bgp *bgp, *bgp2; | |
7690 | char buf[11]; | |
7691 | ||
7692 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next, bgp)) { | |
7693 | /* deduplicate */ | |
7694 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, next2, bgp2)) { | |
7695 | if (bgp2->as == bgp->as) | |
7696 | break; | |
7697 | if (bgp2 == bgp) | |
7698 | break; | |
7699 | } | |
7700 | if (bgp2 != bgp) | |
7701 | continue; | |
7702 | ||
7703 | snprintf(buf, sizeof(buf), "%u", bgp->as); | |
7704 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, buf)); | |
7705 | } | |
7706 | } | |
7707 | ||
18c57037 | 7708 | static const struct cmd_variable_handler bgp_viewvrf_var_handlers[] = { |
d62a17ae | 7709 | {.tokenname = "VIEWVRFNAME", .completions = bgp_viewvrf_autocomplete}, |
2ed9fe4a | 7710 | {.varname = "instasn", .completions = bgp_instasn_autocomplete}, |
d62a17ae | 7711 | {.completions = NULL}, |
18c57037 DS |
7712 | }; |
7713 | ||
1ac267a2 DL |
7714 | struct frr_pthread *bgp_pth_io; |
7715 | struct frr_pthread *bgp_pth_ka; | |
7716 | ||
4d762f26 | 7717 | static void bgp_pthreads_init(void) |
2d4ee774 | 7718 | { |
1ac267a2 DL |
7719 | assert(!bgp_pth_io); |
7720 | assert(!bgp_pth_ka); | |
7721 | ||
a715eab3 | 7722 | struct frr_pthread_attr io = { |
a715eab3 QY |
7723 | .start = frr_pthread_attr_default.start, |
7724 | .stop = frr_pthread_attr_default.stop, | |
a715eab3 QY |
7725 | }; |
7726 | struct frr_pthread_attr ka = { | |
a715eab3 QY |
7727 | .start = bgp_keepalives_start, |
7728 | .stop = bgp_keepalives_stop, | |
a715eab3 | 7729 | }; |
1ac267a2 DL |
7730 | bgp_pth_io = frr_pthread_new(&io, "BGP I/O thread", "bgpd_io"); |
7731 | bgp_pth_ka = frr_pthread_new(&ka, "BGP Keepalives thread", "bgpd_ka"); | |
419dfe6a QY |
7732 | } |
7733 | ||
4d762f26 | 7734 | void bgp_pthreads_run(void) |
419dfe6a | 7735 | { |
1ac267a2 DL |
7736 | frr_pthread_run(bgp_pth_io, NULL); |
7737 | frr_pthread_run(bgp_pth_ka, NULL); | |
88b24dee | 7738 | |
a715eab3 | 7739 | /* Wait until threads are ready. */ |
1ac267a2 DL |
7740 | frr_pthread_wait_running(bgp_pth_io); |
7741 | frr_pthread_wait_running(bgp_pth_ka); | |
2d4ee774 QY |
7742 | } |
7743 | ||
4d762f26 | 7744 | void bgp_pthreads_finish(void) |
2d4ee774 | 7745 | { |
0ca8b79f | 7746 | frr_pthread_stop_all(); |
2d4ee774 QY |
7747 | } |
7748 | ||
f533be73 | 7749 | void bgp_init(unsigned short instance) |
718e3744 | 7750 | { |
fc9a856f | 7751 | |
d62a17ae | 7752 | /* allocates some vital data structures used by peer commands in |
7753 | * vty_init */ | |
718e3744 | 7754 | |
419dfe6a QY |
7755 | /* pre-init pthreads */ |
7756 | bgp_pthreads_init(); | |
7757 | ||
d62a17ae | 7758 | /* Init zebra. */ |
f533be73 | 7759 | bgp_zebra_init(bm->master, instance); |
718e3744 | 7760 | |
49e5a4a0 | 7761 | #ifdef ENABLE_BGP_VNC |
d62a17ae | 7762 | vnc_zebra_init(bm->master); |
65efcfce LB |
7763 | #endif |
7764 | ||
d62a17ae | 7765 | /* BGP VTY commands installation. */ |
7766 | bgp_vty_init(); | |
7767 | ||
7768 | /* BGP inits. */ | |
7769 | bgp_attr_init(); | |
7770 | bgp_debug_init(); | |
ed0e57e3 | 7771 | bgp_community_alias_init(); |
d62a17ae | 7772 | bgp_dump_init(); |
7773 | bgp_route_init(); | |
7774 | bgp_route_map_init(); | |
7775 | bgp_scan_vty_init(); | |
7776 | bgp_mplsvpn_init(); | |
49e5a4a0 | 7777 | #ifdef ENABLE_BGP_VNC |
d62a17ae | 7778 | rfapi_init(); |
65efcfce | 7779 | #endif |
d62a17ae | 7780 | bgp_ethernetvpn_init(); |
7c40bf39 | 7781 | bgp_flowspec_vty_init(); |
d62a17ae | 7782 | |
7783 | /* Access list initialize. */ | |
7784 | access_list_init(); | |
7785 | access_list_add_hook(peer_distribute_update); | |
7786 | access_list_delete_hook(peer_distribute_update); | |
7787 | ||
7788 | /* Filter list initialize. */ | |
7789 | bgp_filter_init(); | |
7790 | as_list_add_hook(peer_aslist_add); | |
7791 | as_list_delete_hook(peer_aslist_del); | |
7792 | ||
7793 | /* Prefix list initialize.*/ | |
7794 | prefix_list_init(); | |
7795 | prefix_list_add_hook(peer_prefix_list_update); | |
7796 | prefix_list_delete_hook(peer_prefix_list_update); | |
7797 | ||
7798 | /* Community list initialize. */ | |
7799 | bgp_clist = community_list_init(); | |
7800 | ||
7801 | /* BFD init */ | |
21bfce98 | 7802 | bgp_bfd_init(bm->master); |
d62a17ae | 7803 | |
e3ea6503 PR |
7804 | bgp_lp_vty_init(); |
7805 | ||
d62a17ae | 7806 | cmd_variable_handler_register(bgp_viewvrf_var_handlers); |
7807 | } | |
7808 | ||
7809 | void bgp_terminate(void) | |
7810 | { | |
7811 | struct bgp *bgp; | |
7812 | struct peer *peer; | |
7813 | struct listnode *node, *nnode; | |
7814 | struct listnode *mnode, *mnnode; | |
7815 | ||
7816 | QOBJ_UNREG(bm); | |
7817 | ||
7818 | /* Close the listener sockets first as this prevents peers from | |
7819 | * attempting | |
7820 | * to reconnect on receiving the peer unconfig message. In the presence | |
7821 | * of a large number of peers this will ensure that no peer is left with | |
7822 | * a dangling connection | |
7823 | */ | |
7824 | /* reverse bgp_master_init */ | |
7825 | bgp_close(); | |
c3004bc4 | 7826 | |
d62a17ae | 7827 | if (bm->listen_sockets) |
6a154c88 | 7828 | list_delete(&bm->listen_sockets); |
d62a17ae | 7829 | |
7830 | for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) | |
7831 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) | |
feb17238 | 7832 | if (peer_established(peer) || peer->status == OpenSent |
d62a17ae | 7833 | || peer->status == OpenConfirm) |
7834 | bgp_notify_send(peer, BGP_NOTIFY_CEASE, | |
7835 | BGP_NOTIFY_CEASE_PEER_UNCONFIG); | |
7836 | ||
d62a17ae | 7837 | if (bm->t_rmap_update) |
7838 | BGP_TIMER_OFF(bm->t_rmap_update); | |
955bfd98 | 7839 | |
48ecf8f5 | 7840 | bgp_mac_finish(); |
545acafb | 7841 | } |
dcc1615e DD |
7842 | |
7843 | struct peer *peer_lookup_in_view(struct vty *vty, struct bgp *bgp, | |
7844 | const char *ip_str, bool use_json) | |
7845 | { | |
7846 | int ret; | |
7847 | struct peer *peer; | |
7848 | union sockunion su; | |
7849 | ||
7850 | /* Get peer sockunion. */ | |
7851 | ret = str2sockunion(ip_str, &su); | |
7852 | if (ret < 0) { | |
7853 | peer = peer_lookup_by_conf_if(bgp, ip_str); | |
7854 | if (!peer) { | |
7855 | peer = peer_lookup_by_hostname(bgp, ip_str); | |
7856 | ||
7857 | if (!peer) { | |
7858 | if (use_json) { | |
7859 | json_object *json_no = NULL; | |
7860 | json_no = json_object_new_object(); | |
7861 | json_object_string_add( | |
7862 | json_no, | |
7863 | "malformedAddressOrName", | |
7864 | ip_str); | |
7865 | vty_out(vty, "%s\n", | |
7866 | json_object_to_json_string_ext( | |
7867 | json_no, | |
7868 | JSON_C_TO_STRING_PRETTY)); | |
7869 | json_object_free(json_no); | |
7870 | } else | |
7871 | vty_out(vty, | |
7872 | "%% Malformed address or name: %s\n", | |
7873 | ip_str); | |
7874 | return NULL; | |
7875 | } | |
7876 | } | |
7877 | return peer; | |
7878 | } | |
7879 | ||
7880 | /* Peer structure lookup. */ | |
7881 | peer = peer_lookup(bgp, &su); | |
7882 | if (!peer) { | |
7883 | if (use_json) { | |
7884 | json_object *json_no = NULL; | |
7885 | json_no = json_object_new_object(); | |
7886 | json_object_string_add(json_no, "warning", | |
7887 | "No such neighbor in this view/vrf"); | |
7888 | vty_out(vty, "%s\n", | |
7889 | json_object_to_json_string_ext( | |
7890 | json_no, JSON_C_TO_STRING_PRETTY)); | |
7891 | json_object_free(json_no); | |
7892 | } else | |
c3c4e528 LS |
7893 | vty_out(vty, "No such neighbor in %s\n", |
7894 | bgp->name_pretty); | |
dcc1615e DD |
7895 | return NULL; |
7896 | } | |
7897 | ||
7898 | return peer; | |
7899 | } | |
7900 | ||
794b37d5 | 7901 | void bgp_gr_apply_running_config(void) |
7902 | { | |
7903 | struct peer *peer = NULL; | |
7904 | struct bgp *bgp = NULL; | |
7905 | struct listnode *node, *nnode; | |
dc95985f | 7906 | bool gr_router_detected = false; |
794b37d5 | 7907 | |
7908 | if (BGP_DEBUG(graceful_restart, GRACEFUL_RESTART)) | |
36235319 | 7909 | zlog_debug("[BGP_GR] %s called !", __func__); |
794b37d5 | 7910 | |
dc95985f | 7911 | for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) { |
7912 | for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) { | |
794b37d5 | 7913 | bgp_peer_gr_flags_update(peer); |
36235319 | 7914 | if (CHECK_FLAG(peer->flags, PEER_FLAG_GRACEFUL_RESTART)) |
dc95985f | 7915 | gr_router_detected = true; |
7916 | } | |
7917 | ||
36235319 QY |
7918 | if (gr_router_detected |
7919 | && bgp->present_zebra_gr_state == ZEBRA_GR_DISABLE) { | |
2ba1fe69 | 7920 | bgp_zebra_send_capabilities(bgp, true); |
36235319 QY |
7921 | } else if (!gr_router_detected |
7922 | && bgp->present_zebra_gr_state == ZEBRA_GR_ENABLE) { | |
2ba1fe69 | 7923 | bgp_zebra_send_capabilities(bgp, false); |
dc95985f | 7924 | } |
7925 | ||
7926 | gr_router_detected = false; | |
7927 | } | |
794b37d5 | 7928 | } |