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fb018d25 DS |
1 | /* Zebra next hop tracking code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
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 | * | |
896014f4 DL |
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 | |
fb018d25 DS |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
fb018d25 DS |
26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
b72ede27 | 37 | #include "vrf.h" |
fb018d25 DS |
38 | |
39 | #include "zebra/rib.h" | |
40 | #include "zebra/rt.h" | |
41 | #include "zebra/zserv.h" | |
fe18ee2d | 42 | #include "zebra/zebra_ns.h" |
7c551956 | 43 | #include "zebra/zebra_vrf.h" |
fb018d25 DS |
44 | #include "zebra/redistribute.h" |
45 | #include "zebra/debug.h" | |
46 | #include "zebra/zebra_rnh.h" | |
8902474b | 47 | #include "zebra/zebra_routemap.h" |
a815b788 | 48 | #include "zebra/interface.h" |
4a1ab8e4 | 49 | #include "zebra/zebra_memory.h" |
fb018d25 | 50 | |
d82ae0de | 51 | static void free_state(vrf_id_t vrf_id, struct rib *rib, struct route_node *rn); |
078430f6 DS |
52 | static void copy_state(struct rnh *rnh, struct rib *rib, |
53 | struct route_node *rn); | |
b72ede27 FL |
54 | #define lookup_rnh_table(v, f) \ |
55 | ({ \ | |
56 | struct zebra_vrf *zvrf; \ | |
57 | struct route_table *t = NULL; \ | |
5f3d1bdf | 58 | zvrf = zebra_vrf_lookup_by_id(v); \ |
b72ede27 FL |
59 | if (zvrf) \ |
60 | t = zvrf->rnh_table[family2afi(f)]; \ | |
61 | t; \ | |
62 | }) | |
63 | ||
fb018d25 | 64 | static int compare_state(struct rib *r1, struct rib *r2); |
7076bb2f FL |
65 | static int send_client(struct rnh *rnh, struct zserv *client, rnh_type_t type, |
66 | vrf_id_t vrf_id); | |
fb018d25 DS |
67 | static void print_rnh(struct route_node *rn, struct vty *vty); |
68 | ||
a50b580a DS |
69 | int zebra_rnh_ip_default_route = 0; |
70 | int zebra_rnh_ipv6_default_route = 0; | |
71 | ||
b72ede27 | 72 | static inline struct route_table *get_rnh_table(vrf_id_t vrfid, int family, |
078430f6 DS |
73 | rnh_type_t type) |
74 | { | |
b72ede27 | 75 | struct zebra_vrf *zvrf; |
078430f6 DS |
76 | struct route_table *t = NULL; |
77 | ||
5f3d1bdf | 78 | zvrf = zebra_vrf_lookup_by_id(vrfid); |
b72ede27 | 79 | if (zvrf) |
078430f6 DS |
80 | switch (type) |
81 | { | |
82 | case RNH_NEXTHOP_TYPE: | |
b72ede27 | 83 | t = zvrf->rnh_table[family2afi(family)]; |
078430f6 DS |
84 | break; |
85 | case RNH_IMPORT_CHECK_TYPE: | |
b72ede27 | 86 | t = zvrf->import_check_table[family2afi(family)]; |
078430f6 DS |
87 | break; |
88 | } | |
89 | ||
90 | return t; | |
91 | } | |
92 | ||
93 | char *rnh_str (struct rnh *rnh, char *buf, int size) | |
fb018d25 DS |
94 | { |
95 | prefix2str(&(rnh->node->p), buf, size); | |
96 | return buf; | |
97 | } | |
98 | ||
99 | struct rnh * | |
b72ede27 | 100 | zebra_add_rnh (struct prefix *p, vrf_id_t vrfid, rnh_type_t type) |
fb018d25 DS |
101 | { |
102 | struct route_table *table; | |
103 | struct route_node *rn; | |
104 | struct rnh *rnh = NULL; | |
67cc8c5e | 105 | char buf[PREFIX2STR_BUFFER]; |
fb018d25 DS |
106 | |
107 | if (IS_ZEBRA_DEBUG_NHT) | |
108 | { | |
4690c7d7 | 109 | prefix2str(p, buf, sizeof (buf)); |
67cc8c5e | 110 | zlog_debug("%u: Add RNH %s type %d", vrfid, buf, type); |
fb018d25 | 111 | } |
078430f6 | 112 | table = get_rnh_table(vrfid, PREFIX_FAMILY(p), type); |
fb018d25 DS |
113 | if (!table) |
114 | { | |
67cc8c5e | 115 | prefix2str(p, buf, sizeof (buf)); |
116 | zlog_warn("%u: Add RNH %s type %d - table not found", | |
117 | vrfid, buf, type); | |
fb018d25 DS |
118 | return NULL; |
119 | } | |
120 | ||
121 | /* Make it sure prefixlen is applied to the prefix. */ | |
122 | apply_mask (p); | |
123 | ||
124 | /* Lookup (or add) route node.*/ | |
125 | rn = route_node_get (table, p); | |
126 | ||
127 | if (!rn->info) | |
128 | { | |
129 | rnh = XCALLOC(MTYPE_RNH, sizeof(struct rnh)); | |
130 | rnh->client_list = list_new(); | |
d82ae0de | 131 | rnh->vrf_id = vrfid; |
6e26278c | 132 | rnh->zebra_static_route_list = list_new(); |
fb018d25 DS |
133 | route_lock_node (rn); |
134 | rn->info = rnh; | |
135 | rnh->node = rn; | |
136 | } | |
137 | ||
138 | route_unlock_node (rn); | |
139 | return (rn->info); | |
140 | } | |
141 | ||
142 | struct rnh * | |
b72ede27 | 143 | zebra_lookup_rnh (struct prefix *p, vrf_id_t vrfid, rnh_type_t type) |
fb018d25 DS |
144 | { |
145 | struct route_table *table; | |
146 | struct route_node *rn; | |
147 | ||
078430f6 | 148 | table = get_rnh_table(vrfid, PREFIX_FAMILY(p), type); |
fb018d25 DS |
149 | if (!table) |
150 | return NULL; | |
151 | ||
152 | /* Make it sure prefixlen is applied to the prefix. */ | |
153 | apply_mask (p); | |
154 | ||
155 | /* Lookup route node.*/ | |
156 | rn = route_node_lookup (table, p); | |
157 | if (!rn) | |
158 | return NULL; | |
159 | ||
160 | route_unlock_node (rn); | |
161 | return (rn->info); | |
162 | } | |
163 | ||
5a8dfcd8 RW |
164 | void |
165 | zebra_free_rnh (struct rnh *rnh) | |
166 | { | |
167 | rnh->flags |= ZEBRA_NHT_DELETED; | |
168 | list_free (rnh->client_list); | |
169 | list_free (rnh->zebra_static_route_list); | |
170 | free_state (rnh->vrf_id, rnh->state, rnh->node); | |
171 | XFREE (MTYPE_RNH, rnh); | |
172 | } | |
173 | ||
fb018d25 | 174 | void |
078430f6 | 175 | zebra_delete_rnh (struct rnh *rnh, rnh_type_t type) |
fb018d25 DS |
176 | { |
177 | struct route_node *rn; | |
178 | ||
70c0f184 | 179 | if (!rnh || (rnh->flags & ZEBRA_NHT_DELETED) || !(rn = rnh->node)) |
fb018d25 DS |
180 | return; |
181 | ||
182 | if (IS_ZEBRA_DEBUG_NHT) | |
183 | { | |
4690c7d7 | 184 | char buf[PREFIX2STR_BUFFER]; |
67cc8c5e | 185 | zlog_debug("%u: Del RNH %s type %d", |
186 | rnh->vrf_id, rnh_str(rnh, buf, sizeof (buf)), type); | |
fb018d25 DS |
187 | } |
188 | ||
5a8dfcd8 | 189 | zebra_free_rnh (rnh); |
fb018d25 DS |
190 | rn->info = NULL; |
191 | route_unlock_node (rn); | |
fb018d25 DS |
192 | } |
193 | ||
194 | void | |
7076bb2f FL |
195 | zebra_add_rnh_client (struct rnh *rnh, struct zserv *client, rnh_type_t type, |
196 | vrf_id_t vrf_id) | |
fb018d25 DS |
197 | { |
198 | if (IS_ZEBRA_DEBUG_NHT) | |
199 | { | |
4690c7d7 | 200 | char buf[PREFIX2STR_BUFFER]; |
67cc8c5e | 201 | zlog_debug("%u: Client %s registers for RNH %s type %d", |
202 | vrf_id, zebra_route_string(client->proto), | |
203 | rnh_str(rnh, buf, sizeof (buf)), type); | |
fb018d25 DS |
204 | } |
205 | if (!listnode_lookup(rnh->client_list, client)) | |
206 | { | |
207 | listnode_add(rnh->client_list, client); | |
7076bb2f | 208 | send_client(rnh, client, type, vrf_id); // Pending: check if its needed |
fb018d25 DS |
209 | } |
210 | } | |
211 | ||
212 | void | |
078430f6 | 213 | zebra_remove_rnh_client (struct rnh *rnh, struct zserv *client, rnh_type_t type) |
fb018d25 DS |
214 | { |
215 | if (IS_ZEBRA_DEBUG_NHT) | |
216 | { | |
4690c7d7 | 217 | char buf[PREFIX2STR_BUFFER]; |
67cc8c5e | 218 | zlog_debug("Client %s unregisters for RNH %s type %d", |
fb018d25 | 219 | zebra_route_string(client->proto), |
67cc8c5e | 220 | rnh_str(rnh, buf, sizeof (buf)), type); |
fb018d25 DS |
221 | } |
222 | listnode_delete(rnh->client_list, client); | |
6e26278c DS |
223 | if (list_isempty(rnh->client_list) && |
224 | list_isempty(rnh->zebra_static_route_list)) | |
078430f6 | 225 | zebra_delete_rnh(rnh, type); |
6e26278c DS |
226 | } |
227 | ||
228 | void | |
d82ae0de | 229 | zebra_register_rnh_static_nh(vrf_id_t vrf_id, struct prefix *nh, |
230 | struct route_node *static_rn) | |
6e26278c DS |
231 | { |
232 | struct rnh *rnh; | |
233 | ||
d82ae0de | 234 | rnh = zebra_add_rnh(nh, vrf_id, RNH_NEXTHOP_TYPE); |
6e26278c DS |
235 | if (rnh && !listnode_lookup(rnh->zebra_static_route_list, static_rn)) |
236 | { | |
237 | listnode_add(rnh->zebra_static_route_list, static_rn); | |
238 | } | |
239 | } | |
240 | ||
241 | void | |
d82ae0de | 242 | zebra_deregister_rnh_static_nh(vrf_id_t vrf_id, struct prefix *nh, |
243 | struct route_node *static_rn) | |
6e26278c DS |
244 | { |
245 | struct rnh *rnh; | |
246 | ||
d82ae0de | 247 | rnh = zebra_lookup_rnh(nh, vrf_id, RNH_NEXTHOP_TYPE); |
70c0f184 | 248 | if (!rnh || (rnh->flags & ZEBRA_NHT_DELETED)) |
6e26278c DS |
249 | return; |
250 | ||
251 | listnode_delete(rnh->zebra_static_route_list, static_rn); | |
252 | ||
253 | if (list_isempty(rnh->client_list) && | |
254 | list_isempty(rnh->zebra_static_route_list)) | |
078430f6 | 255 | zebra_delete_rnh(rnh, RNH_NEXTHOP_TYPE); |
fb018d25 DS |
256 | } |
257 | ||
a399694f | 258 | void |
d82ae0de | 259 | zebra_deregister_rnh_static_nexthops (vrf_id_t vrf_id, struct nexthop *nexthop, |
260 | struct route_node *rn) | |
a399694f DS |
261 | { |
262 | struct nexthop *nh; | |
263 | struct prefix nh_p; | |
264 | ||
265 | for (nh = nexthop; nh ; nh = nh->next) | |
266 | { | |
778cb26f DS |
267 | switch (nh->type) |
268 | { | |
269 | case NEXTHOP_TYPE_IPV4: | |
270 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a399694f DS |
271 | nh_p.family = AF_INET; |
272 | nh_p.prefixlen = IPV4_MAX_BITLEN; | |
273 | nh_p.u.prefix4 = nh->gate.ipv4; | |
778cb26f DS |
274 | break; |
275 | case NEXTHOP_TYPE_IPV6: | |
276 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a399694f DS |
277 | nh_p.family = AF_INET6; |
278 | nh_p.prefixlen = IPV6_MAX_BITLEN; | |
279 | nh_p.u.prefix6 = nh->gate.ipv6; | |
778cb26f DS |
280 | break; |
281 | /* | |
282 | * Not sure what really to do here, we are not | |
283 | * supposed to have either of these for NHT | |
284 | * and the code has no way to know what prefix | |
285 | * to use. So I'm going to just continue | |
286 | * for the moment, which is preferable to | |
287 | * what is currently happening which is a | |
288 | * CRASH and BURN. | |
289 | * Some simple testing shows that we | |
290 | * are not leaving slag around for these | |
291 | * skipped static routes. Since | |
292 | * they don't appear to be installed | |
293 | */ | |
294 | case NEXTHOP_TYPE_IFINDEX: | |
295 | case NEXTHOP_TYPE_BLACKHOLE: | |
296 | continue; | |
297 | break; | |
298 | } | |
d82ae0de | 299 | zebra_deregister_rnh_static_nh(vrf_id, &nh_p, rn); |
a399694f DS |
300 | } |
301 | } | |
302 | ||
d50b5bdd | 303 | /* Apply the NHT route-map for a client to the route (and nexthops) |
304 | * resolving a NH. | |
305 | */ | |
6e26278c | 306 | static int |
d50b5bdd | 307 | zebra_rnh_apply_nht_rmap(int family, struct route_node *prn, |
308 | struct rib *rib, int proto) | |
6e26278c DS |
309 | { |
310 | int at_least_one = 0; | |
311 | int rmap_family; /* Route map has diff AF family enum */ | |
312 | struct nexthop *nexthop; | |
313 | int ret; | |
314 | ||
315 | rmap_family = (family == AF_INET) ? AFI_IP : AFI_IP6; | |
316 | ||
317 | if (prn && rib) | |
318 | { | |
319 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
320 | { | |
321 | ret = zebra_nht_route_map_check(rmap_family, proto, &prn->p, rib, | |
322 | nexthop); | |
323 | if (ret != RMAP_DENYMATCH) | |
324 | { | |
325 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
326 | at_least_one++; /* at least one valid NH */ | |
327 | } | |
328 | else | |
329 | { | |
330 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
331 | } | |
332 | } | |
333 | } | |
334 | return (at_least_one); | |
335 | } | |
336 | ||
d50b5bdd | 337 | /* |
338 | * Determine appropriate route (RIB entry) resolving a tracked entry | |
339 | * (nexthop or BGP route for import). | |
340 | */ | |
341 | static struct rib * | |
342 | zebra_rnh_resolve_entry (vrf_id_t vrfid, int family, rnh_type_t type, | |
343 | struct route_node *nrn, struct rnh *rnh, | |
344 | struct route_node **prn) | |
fb018d25 | 345 | { |
d50b5bdd | 346 | struct route_table *route_table; |
347 | struct route_node *rn; | |
348 | struct rib *rib; | |
349 | ||
350 | *prn = NULL; | |
351 | ||
352 | route_table = zebra_vrf_table(family2afi(family), SAFI_UNICAST, vrfid); | |
353 | if (!route_table) // unexpected | |
354 | return NULL; | |
355 | ||
356 | rn = route_node_match(route_table, &nrn->p); | |
357 | if (!rn) | |
358 | return NULL; | |
359 | ||
337299a9 DW |
360 | /* When resolving nexthops, do not resolve via the default route unless |
361 | * 'ip nht resolve-via-default' is configured. | |
d50b5bdd | 362 | */ |
363 | if ((type == RNH_NEXTHOP_TYPE) && | |
364 | (is_default_prefix (&rn->p) && | |
365 | !nh_resolve_via_default(rn->p.family))) | |
366 | rib = NULL; | |
337299a9 DW |
367 | else if ((type == RNH_IMPORT_CHECK_TYPE) && |
368 | CHECK_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH) && | |
369 | !prefix_same(&nrn->p, &rn->p)) | |
370 | rib = NULL; | |
d50b5bdd | 371 | else |
372 | { | |
373 | /* Identify appropriate route entry. */ | |
374 | RNODE_FOREACH_RIB(rn, rib) | |
375 | { | |
376 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
377 | continue; | |
2fb975da TT |
378 | if (! CHECK_FLAG (rib->status, RIB_ENTRY_SELECTED_FIB)) |
379 | continue; | |
380 | ||
381 | if (CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED)) | |
d50b5bdd | 382 | { |
2fb975da TT |
383 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
384 | break; | |
385 | if (rib->type == ZEBRA_ROUTE_NHRP) | |
d50b5bdd | 386 | { |
2fb975da TT |
387 | struct nexthop *nexthop; |
388 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
389 | if (nexthop->type == NEXTHOP_TYPE_IFINDEX) | |
390 | break; | |
391 | if (nexthop) | |
d50b5bdd | 392 | break; |
393 | } | |
d50b5bdd | 394 | } |
2fb975da TT |
395 | else if ((type == RNH_IMPORT_CHECK_TYPE) && |
396 | (rib->type == ZEBRA_ROUTE_BGP)) | |
397 | continue; | |
398 | else | |
399 | break; | |
d50b5bdd | 400 | } |
401 | } | |
402 | ||
403 | /* Need to unlock route node */ | |
404 | route_unlock_node(rn); | |
405 | if (rib) | |
406 | *prn = rn; | |
407 | return rib; | |
408 | } | |
409 | ||
410 | /* | |
411 | * See if a tracked route entry for import (by BGP) has undergone any | |
412 | * change, and if so, notify the client. | |
413 | */ | |
414 | static void | |
415 | zebra_rnh_eval_import_check_entry (vrf_id_t vrfid, int family, int force, | |
416 | struct route_node *nrn, struct rnh *rnh, | |
417 | struct rib *rib) | |
418 | { | |
419 | int state_changed = 0; | |
fb018d25 | 420 | struct zserv *client; |
d50b5bdd | 421 | char bufn[INET6_ADDRSTRLEN]; |
fb018d25 | 422 | struct listnode *node; |
078430f6 DS |
423 | struct nexthop *nexthop, *tnexthop; |
424 | int recursing; | |
c5f7794f | 425 | |
d50b5bdd | 426 | if (rib && (rnh->state == NULL)) |
fb018d25 | 427 | { |
d50b5bdd | 428 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) |
429 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) | |
430 | { | |
431 | state_changed = 1; | |
432 | break; | |
433 | } | |
fb018d25 | 434 | } |
d50b5bdd | 435 | else if (!rib && (rnh->state != NULL)) |
436 | state_changed = 1; | |
fb018d25 | 437 | |
d50b5bdd | 438 | if (compare_state(rib, rnh->state)) |
439 | copy_state(rnh, rib, nrn); | |
440 | ||
441 | if (state_changed || force) | |
fb018d25 | 442 | { |
d50b5bdd | 443 | if (IS_ZEBRA_DEBUG_NHT) |
444 | { | |
445 | prefix2str(&nrn->p, bufn, INET6_ADDRSTRLEN); | |
446 | zlog_debug("%u:%s: Route import check %s %s\n", | |
447 | vrfid, bufn, rnh->state ? "passed" : "failed", | |
448 | state_changed ? "(state changed)" : ""); | |
449 | } | |
450 | /* state changed, notify clients */ | |
451 | for (ALL_LIST_ELEMENTS_RO(rnh->client_list, node, client)) | |
452 | { | |
453 | send_client(rnh, client, RNH_IMPORT_CHECK_TYPE, vrfid); | |
454 | } | |
fb018d25 | 455 | } |
d50b5bdd | 456 | } |
fb018d25 | 457 | |
d50b5bdd | 458 | /* |
459 | * Notify clients registered for this nexthop about a change. | |
460 | */ | |
461 | static void | |
462 | zebra_rnh_notify_protocol_clients (vrf_id_t vrfid, int family, | |
463 | struct route_node *nrn, struct rnh *rnh, | |
464 | struct route_node *prn, struct rib *rib) | |
465 | { | |
466 | struct listnode *node; | |
467 | struct zserv *client; | |
468 | char bufn[INET6_ADDRSTRLEN]; | |
469 | char bufp[INET6_ADDRSTRLEN]; | |
470 | int num_resolving_nh; | |
078430f6 | 471 | |
d50b5bdd | 472 | if (IS_ZEBRA_DEBUG_NHT) |
fb018d25 | 473 | { |
d50b5bdd | 474 | prefix2str(&nrn->p, bufn, INET6_ADDRSTRLEN); |
475 | if (prn && rib) | |
476 | { | |
477 | prefix2str(&prn->p, bufp, INET6_ADDRSTRLEN); | |
478 | zlog_debug("%u:%s: NH resolved over route %s", vrfid, bufn, bufp); | |
479 | } | |
480 | else | |
481 | zlog_debug("%u:%s: NH has become unresolved", vrfid, bufn); | |
482 | } | |
fb018d25 | 483 | |
d50b5bdd | 484 | for (ALL_LIST_ELEMENTS_RO(rnh->client_list, node, client)) |
485 | { | |
486 | if (prn && rib) | |
487 | { | |
488 | /* Apply route-map for this client to route resolving this | |
489 | * nexthop to see if it is filtered or not. | |
490 | */ | |
491 | num_resolving_nh = zebra_rnh_apply_nht_rmap(family, prn, rib, | |
492 | client->proto); | |
493 | if (num_resolving_nh) | |
494 | rnh->filtered[client->proto] = 0; | |
495 | else | |
496 | rnh->filtered[client->proto] = 1; | |
497 | ||
498 | if (IS_ZEBRA_DEBUG_NHT) | |
499 | zlog_debug("%u:%s: Notifying client %s about NH %s", | |
500 | vrfid, bufn, zebra_route_string(client->proto), | |
501 | num_resolving_nh ? "" : "(filtered by route-map)"); | |
502 | } | |
503 | else | |
504 | { | |
505 | rnh->filtered[client->proto] = 0; | |
506 | if (IS_ZEBRA_DEBUG_NHT) | |
507 | zlog_debug("%u:%s: Notifying client %s about NH (unreachable)", | |
508 | vrfid, bufn, zebra_route_string(client->proto)); | |
509 | } | |
6e26278c | 510 | |
d50b5bdd | 511 | send_client(rnh, client, RNH_NEXTHOP_TYPE, vrfid); |
512 | } | |
513 | } | |
078430f6 | 514 | |
d50b5bdd | 515 | static void |
516 | zebra_rnh_process_static_routes (vrf_id_t vrfid, int family, | |
517 | struct route_node *nrn, struct rnh *rnh, | |
518 | struct route_node *prn, struct rib *rib) | |
519 | { | |
520 | struct listnode *node; | |
521 | int num_resolving_nh = 0; | |
522 | struct route_node *static_rn; | |
523 | struct rib *srib; | |
524 | struct nexthop *nexthop; | |
525 | char bufn[INET6_ADDRSTRLEN]; | |
526 | char bufp[INET6_ADDRSTRLEN]; | |
527 | char bufs[INET6_ADDRSTRLEN]; | |
078430f6 | 528 | |
d50b5bdd | 529 | if (IS_ZEBRA_DEBUG_NHT) |
530 | { | |
531 | prefix2str(&nrn->p, bufn, INET6_ADDRSTRLEN); | |
532 | if (prn) | |
533 | prefix2str(&prn->p, bufp, INET6_ADDRSTRLEN); | |
534 | } | |
535 | ||
536 | if (prn && rib) | |
537 | { | |
538 | /* Apply route-map for "static" to route resolving this | |
539 | * nexthop to see if it is filtered or not. | |
078430f6 | 540 | */ |
d50b5bdd | 541 | num_resolving_nh = zebra_rnh_apply_nht_rmap(family, prn, rib, |
542 | ZEBRA_ROUTE_STATIC); | |
543 | if (num_resolving_nh) | |
544 | rnh->filtered[ZEBRA_ROUTE_STATIC] = 0; | |
fb018d25 | 545 | else |
d50b5bdd | 546 | rnh->filtered[ZEBRA_ROUTE_STATIC] = 1; |
547 | } | |
548 | else | |
549 | rnh->filtered[ZEBRA_ROUTE_STATIC] = 0; | |
fb018d25 | 550 | |
d50b5bdd | 551 | /* Evaluate each static route associated with this nexthop. */ |
552 | for (ALL_LIST_ELEMENTS_RO(rnh->zebra_static_route_list, node, | |
553 | static_rn)) | |
554 | { | |
555 | RNODE_FOREACH_RIB(static_rn, srib) | |
556 | { | |
557 | if (srib->type == ZEBRA_ROUTE_STATIC) | |
9274cde5 | 558 | continue; |
9f0ea7d4 | 559 | |
9274cde5 DS |
560 | /* Set the filter flag for the correct nexthop - static route may |
561 | * be having multiple. We care here only about registered nexthops. | |
562 | */ | |
563 | for (nexthop = srib->nexthop; nexthop; nexthop = nexthop->next) | |
564 | { | |
565 | switch (nexthop->type) | |
566 | { | |
567 | case NEXTHOP_TYPE_IPV4: | |
568 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
569 | if (nexthop->gate.ipv4.s_addr == nrn->p.u.prefix4.s_addr) | |
570 | { | |
571 | if (num_resolving_nh) | |
572 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED); | |
573 | else | |
574 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED); | |
575 | } | |
576 | break; | |
577 | case NEXTHOP_TYPE_IPV6: | |
578 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
078430f6 | 579 | |
d50b5bdd | 580 | if (memcmp(&nexthop->gate.ipv6,&nrn->p.u.prefix6, 16) == 0) |
581 | { | |
582 | if (num_resolving_nh) | |
583 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED); | |
584 | else | |
585 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED); | |
586 | } | |
587 | break; | |
588 | default: | |
589 | break; | |
590 | } | |
591 | } | |
078430f6 | 592 | |
9274cde5 DS |
593 | if (IS_ZEBRA_DEBUG_NHT) |
594 | { | |
595 | prefix2str(&static_rn->p, bufs, INET6_ADDRSTRLEN); | |
596 | if (prn && rib) | |
597 | zlog_debug("%u:%s: NH change %s, scheduling static route %s", | |
598 | vrfid, bufn, num_resolving_nh ? | |
599 | "" : "(filtered by route-map)", bufs); | |
600 | else | |
601 | zlog_debug("%u:%s: NH unreachable, scheduling static route %s", | |
602 | vrfid, bufn, bufs); | |
603 | } | |
604 | ||
7fe3cf13 | 605 | SET_FLAG(srib->status, RIB_ENTRY_CHANGED); |
9274cde5 | 606 | SET_FLAG(srib->status, RIB_ENTRY_NEXTHOPS_CHANGED); |
d50b5bdd | 607 | } |
078430f6 | 608 | |
44e9909d | 609 | rib_queue_add(static_rn); |
d50b5bdd | 610 | } |
611 | } | |
078430f6 | 612 | |
d50b5bdd | 613 | /* |
614 | * See if a tracked nexthop entry has undergone any change, and if so, | |
615 | * take appropriate action; this involves notifying any clients and/or | |
616 | * scheduling dependent static routes for processing. | |
617 | */ | |
618 | static void | |
619 | zebra_rnh_eval_nexthop_entry (vrf_id_t vrfid, int family, int force, | |
620 | struct route_node *nrn, struct rnh *rnh, | |
621 | struct route_node *prn, struct rib *rib) | |
622 | { | |
623 | int state_changed = 0; | |
e2ae41ad | 624 | |
d50b5bdd | 625 | /* If we're resolving over a different route, resolution has changed or |
626 | * the resolving route has some change (e.g., metric), there is a state | |
627 | * change. | |
628 | */ | |
629 | if (!prefix_same(&rnh->resolved_route, &prn->p)) | |
630 | { | |
d50b5bdd | 631 | if (prn) |
632 | prefix_copy(&rnh->resolved_route, &prn->p); | |
633 | else | |
634 | memset(&rnh->resolved_route, 0, sizeof(struct prefix)); | |
c5f7794f | 635 | |
d50b5bdd | 636 | copy_state(rnh, rib, nrn); |
637 | state_changed = 1; | |
638 | } | |
639 | else if (compare_state(rib, rnh->state)) | |
640 | { | |
d50b5bdd | 641 | copy_state(rnh, rib, nrn); |
642 | state_changed = 1; | |
643 | } | |
9f0ea7d4 | 644 | |
d50b5bdd | 645 | if (state_changed || force) |
646 | { | |
647 | /* NOTE: Use the "copy" of resolving route stored in 'rnh' i.e., | |
648 | * rnh->state. | |
649 | */ | |
650 | /* Notify registered protocol clients. */ | |
651 | zebra_rnh_notify_protocol_clients (vrfid, family, nrn, rnh, | |
652 | prn, rnh->state); | |
6e26278c | 653 | |
d50b5bdd | 654 | /* Process static routes attached to this nexthop */ |
655 | zebra_rnh_process_static_routes (vrfid, family, nrn, rnh, | |
656 | prn, rnh->state); | |
657 | } | |
658 | } | |
6e26278c | 659 | |
d50b5bdd | 660 | /* Evaluate one tracked entry */ |
661 | static void | |
662 | zebra_rnh_evaluate_entry (vrf_id_t vrfid, int family, int force, rnh_type_t type, | |
663 | struct route_node *nrn) | |
664 | { | |
665 | struct rnh *rnh; | |
666 | struct rib *rib; | |
667 | struct route_node *prn; | |
668 | char bufn[INET6_ADDRSTRLEN]; | |
9f0ea7d4 | 669 | |
d50b5bdd | 670 | if (IS_ZEBRA_DEBUG_NHT) |
671 | { | |
672 | prefix2str(&nrn->p, bufn, INET6_ADDRSTRLEN); | |
673 | zlog_debug("%u:%s: Evaluate RNH, type %d %s", | |
674 | vrfid, bufn, type, force ? "(force)" : ""); | |
675 | } | |
6e26278c | 676 | |
d50b5bdd | 677 | rnh = nrn->info; |
6e26278c | 678 | |
d50b5bdd | 679 | /* Identify route entry (RIB) resolving this tracked entry. */ |
680 | rib = zebra_rnh_resolve_entry (vrfid, family, type, nrn, rnh, &prn); | |
6e26278c | 681 | |
d50b5bdd | 682 | /* If the entry cannot be resolved and that is also the existing state, |
683 | * there is nothing further to do. | |
684 | */ | |
685 | if (!rib && rnh->state == NULL && !force) | |
686 | return; | |
078430f6 | 687 | |
d50b5bdd | 688 | /* Process based on type of entry. */ |
689 | if (type == RNH_IMPORT_CHECK_TYPE) | |
690 | zebra_rnh_eval_import_check_entry (vrfid, family, force, | |
691 | nrn, rnh, rib); | |
692 | else | |
693 | zebra_rnh_eval_nexthop_entry (vrfid, family, force, | |
694 | nrn, rnh, prn, rib); | |
695 | } | |
696 | ||
8ce5e6a3 DS |
697 | /* |
698 | * Clear the RIB_ENTRY_NEXTHOPS_CHANGED flag | |
699 | * from the rib entries. | |
700 | * | |
701 | * Please note we are doing this *after* we have | |
702 | * notified the world about each nexthop as that | |
703 | * we can have a situation where one rib entry | |
704 | * covers multiple nexthops we are interested in. | |
705 | */ | |
706 | static void | |
707 | zebra_rnh_clear_nhc_flag (vrf_id_t vrfid, int family, rnh_type_t type, | |
708 | struct route_node *nrn) | |
709 | { | |
710 | struct rnh *rnh; | |
711 | struct rib *rib; | |
712 | struct route_node *prn; | |
713 | ||
714 | rnh = nrn->info; | |
715 | ||
716 | rib = zebra_rnh_resolve_entry (vrfid, family, type, nrn, rnh, &prn); | |
717 | ||
718 | if (rib) | |
719 | UNSET_FLAG (rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); | |
720 | } | |
d50b5bdd | 721 | |
722 | /* Evaluate all tracked entries (nexthops or routes for import into BGP) | |
723 | * of a particular VRF and address-family or a specific prefix. | |
724 | */ | |
725 | void | |
726 | zebra_evaluate_rnh (vrf_id_t vrfid, int family, int force, rnh_type_t type, | |
727 | struct prefix *p) | |
728 | { | |
729 | struct route_table *rnh_table; | |
730 | struct route_node *nrn; | |
731 | ||
732 | rnh_table = get_rnh_table(vrfid, family, type); | |
733 | if (!rnh_table) // unexpected | |
734 | return; | |
078430f6 | 735 | |
d50b5bdd | 736 | if (p) |
737 | { | |
738 | /* Evaluating a specific entry, make sure it exists. */ | |
739 | nrn = route_node_lookup (rnh_table, p); | |
740 | if (nrn && nrn->info) | |
741 | zebra_rnh_evaluate_entry (vrfid, family, force, type, nrn); | |
8ce5e6a3 | 742 | |
d50b5bdd | 743 | if (nrn) |
744 | route_unlock_node (nrn); | |
745 | } | |
746 | else | |
747 | { | |
748 | /* Evaluate entire table. */ | |
749 | nrn = route_top (rnh_table); | |
750 | while (nrn) | |
751 | { | |
752 | if (nrn->info) | |
753 | zebra_rnh_evaluate_entry (vrfid, family, force, type, nrn); | |
754 | nrn = route_next(nrn); /* this will also unlock nrn */ | |
755 | } | |
8ce5e6a3 DS |
756 | nrn = route_top (rnh_table); |
757 | while (nrn) | |
758 | { | |
759 | if (nrn->info) | |
760 | zebra_rnh_clear_nhc_flag (vrfid, family, type, nrn); | |
761 | nrn = route_next(nrn); /* this will also unlock nrn */ | |
762 | } | |
d50b5bdd | 763 | } |
fb018d25 DS |
764 | } |
765 | ||
fb018d25 | 766 | void |
b72ede27 | 767 | zebra_print_rnh_table (vrf_id_t vrfid, int af, struct vty *vty, rnh_type_t type) |
fb018d25 DS |
768 | { |
769 | struct route_table *table; | |
770 | struct route_node *rn; | |
771 | ||
078430f6 | 772 | table = get_rnh_table(vrfid, af, type); |
fb018d25 DS |
773 | if (!table) |
774 | { | |
775 | zlog_debug("print_rnhs: rnh table not found\n"); | |
776 | return; | |
777 | } | |
778 | ||
779 | for (rn = route_top(table); rn; rn = route_next(rn)) | |
780 | if (rn->info) | |
781 | print_rnh(rn, vty); | |
782 | } | |
783 | ||
784 | int | |
67cc8c5e | 785 | zebra_cleanup_rnh_client (vrf_id_t vrf_id, int family, struct zserv *client, |
078430f6 | 786 | rnh_type_t type) |
fb018d25 DS |
787 | { |
788 | struct route_table *ntable; | |
789 | struct route_node *nrn; | |
790 | struct rnh *rnh; | |
791 | ||
67cc8c5e | 792 | if (IS_ZEBRA_DEBUG_NHT) |
793 | zlog_debug("%u: Client %s RNH cleanup for family %d type %d", | |
794 | vrf_id, zebra_route_string(client->proto), family, type); | |
795 | ||
796 | ntable = get_rnh_table(vrf_id, family, type); | |
fb018d25 DS |
797 | if (!ntable) |
798 | { | |
799 | zlog_debug("cleanup_rnh_client: rnh table not found\n"); | |
800 | return -1; | |
801 | } | |
802 | ||
803 | for (nrn = route_top (ntable); nrn; nrn = route_next (nrn)) | |
804 | { | |
805 | if (!nrn->info) | |
806 | continue; | |
807 | ||
808 | rnh = nrn->info; | |
078430f6 | 809 | zebra_remove_rnh_client(rnh, client, type); |
fb018d25 DS |
810 | } |
811 | return 1; | |
812 | } | |
813 | ||
814 | /** | |
815 | * free_state - free up the rib structure associated with the rnh. | |
816 | */ | |
817 | static void | |
d82ae0de | 818 | free_state (vrf_id_t vrf_id, struct rib *rib, struct route_node *rn) |
fb018d25 | 819 | { |
fb018d25 DS |
820 | |
821 | if (!rib) | |
822 | return; | |
823 | ||
824 | /* free RIB and nexthops */ | |
d82ae0de | 825 | zebra_deregister_rnh_static_nexthops (vrf_id, rib->nexthop, rn); |
b046b633 | 826 | nexthops_free(rib->nexthop); |
fb018d25 DS |
827 | XFREE (MTYPE_RIB, rib); |
828 | } | |
829 | ||
fb018d25 | 830 | static void |
6e26278c | 831 | copy_state (struct rnh *rnh, struct rib *rib, struct route_node *rn) |
fb018d25 DS |
832 | { |
833 | struct rib *state; | |
834 | struct nexthop *nh; | |
835 | ||
836 | if (rnh->state) | |
837 | { | |
d82ae0de | 838 | free_state(rnh->vrf_id, rnh->state, rn); |
fb018d25 DS |
839 | rnh->state = NULL; |
840 | } | |
841 | ||
842 | if (!rib) | |
843 | return; | |
844 | ||
845 | state = XCALLOC (MTYPE_RIB, sizeof (struct rib)); | |
846 | state->type = rib->type; | |
847 | state->metric = rib->metric; | |
848 | ||
849 | for (nh = rib->nexthop; nh; nh = nh->next) | |
a399694f | 850 | rib_copy_nexthops(state, nh); |
fb018d25 DS |
851 | rnh->state = state; |
852 | } | |
853 | ||
854 | static int | |
855 | compare_state (struct rib *r1, struct rib *r2) | |
856 | { | |
fb018d25 DS |
857 | |
858 | if (!r1 && !r2) | |
859 | return 0; | |
860 | ||
861 | if ((!r1 && r2) || (r1 && !r2)) | |
862 | return 1; | |
863 | ||
864 | if (r1->metric != r2->metric) | |
865 | return 1; | |
866 | ||
867 | if (r1->nexthop_num != r2->nexthop_num) | |
868 | return 1; | |
869 | ||
6e26278c DS |
870 | if (CHECK_FLAG(r1->status, RIB_ENTRY_NEXTHOPS_CHANGED)) |
871 | return 1; | |
fb018d25 DS |
872 | |
873 | return 0; | |
874 | } | |
875 | ||
876 | static int | |
7076bb2f | 877 | send_client (struct rnh *rnh, struct zserv *client, rnh_type_t type, vrf_id_t vrf_id) |
fb018d25 DS |
878 | { |
879 | struct stream *s; | |
880 | struct rib *rib; | |
881 | unsigned long nump; | |
882 | u_char num; | |
883 | struct nexthop *nexthop; | |
884 | struct route_node *rn; | |
078430f6 DS |
885 | int cmd = (type == RNH_IMPORT_CHECK_TYPE) |
886 | ? ZEBRA_IMPORT_CHECK_UPDATE : ZEBRA_NEXTHOP_UPDATE; | |
fb018d25 DS |
887 | |
888 | rn = rnh->node; | |
889 | rib = rnh->state; | |
890 | ||
891 | /* Get output stream. */ | |
892 | s = client->obuf; | |
893 | stream_reset (s); | |
894 | ||
7076bb2f FL |
895 | zserv_create_header (s, cmd, vrf_id); |
896 | ||
fb018d25 | 897 | stream_putw(s, rn->p.family); |
078430f6 DS |
898 | switch (rn->p.family) |
899 | { | |
900 | case AF_INET: | |
901 | stream_putc(s, rn->p.prefixlen); | |
902 | stream_put_in_addr(s, &rn->p.u.prefix4); | |
903 | break; | |
904 | case AF_INET6: | |
905 | stream_putc(s, rn->p.prefixlen); | |
906 | stream_put(s, &rn->p.u.prefix6, IPV6_MAX_BYTELEN); | |
907 | break; | |
908 | default: | |
909 | zlog_err("%s: Unknown family (%d) notification attempted\n", | |
910 | __FUNCTION__, rn->p.family); | |
911 | break; | |
912 | } | |
fb018d25 DS |
913 | if (rib) |
914 | { | |
d14b95ce | 915 | stream_putc (s, rib->distance); |
fb018d25 DS |
916 | stream_putl (s, rib->metric); |
917 | num = 0; | |
918 | nump = stream_get_endp(s); | |
919 | stream_putc (s, 0); | |
920 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
0e5c866a DS |
921 | if ((CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB) || |
922 | CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) && | |
9f0ea7d4 | 923 | CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE)) |
fb018d25 DS |
924 | { |
925 | stream_putc (s, nexthop->type); | |
926 | switch (nexthop->type) | |
927 | { | |
5b30316e | 928 | case NEXTHOP_TYPE_IPV4: |
fb018d25 | 929 | stream_put_in_addr (s, &nexthop->gate.ipv4); |
a18ed03f | 930 | stream_putl (s, nexthop->ifindex); |
fb018d25 | 931 | break; |
5b30316e | 932 | case NEXTHOP_TYPE_IFINDEX: |
fb018d25 DS |
933 | stream_putl (s, nexthop->ifindex); |
934 | break; | |
5b30316e | 935 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
fb018d25 DS |
936 | stream_put_in_addr (s, &nexthop->gate.ipv4); |
937 | stream_putl (s, nexthop->ifindex); | |
938 | break; | |
5b30316e | 939 | case NEXTHOP_TYPE_IPV6: |
fb018d25 | 940 | stream_put (s, &nexthop->gate.ipv6, 16); |
8e581e39 | 941 | stream_putl (s, nexthop->ifindex); |
fb018d25 | 942 | break; |
5b30316e | 943 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
fb018d25 DS |
944 | stream_put (s, &nexthop->gate.ipv6, 16); |
945 | stream_putl (s, nexthop->ifindex); | |
946 | break; | |
fb018d25 DS |
947 | default: |
948 | /* do nothing */ | |
949 | break; | |
950 | } | |
951 | num++; | |
952 | } | |
953 | stream_putc_at (s, nump, num); | |
954 | } | |
955 | else | |
956 | { | |
d14b95ce DS |
957 | stream_putc (s, 0); // distance |
958 | stream_putl (s, 0); // metric | |
959 | stream_putc (s, 0); // nexthops | |
fb018d25 DS |
960 | } |
961 | stream_putw_at (s, 0, stream_get_endp (s)); | |
04b02fda | 962 | |
cf672a86 | 963 | client->nh_last_upd_time = monotime(NULL); |
078430f6 | 964 | client->last_write_cmd = cmd; |
fb018d25 DS |
965 | return zebra_server_send_message(client); |
966 | } | |
967 | ||
968 | static void | |
969 | print_nh (struct nexthop *nexthop, struct vty *vty) | |
970 | { | |
971 | char buf[BUFSIZ]; | |
fe18ee2d | 972 | struct zebra_ns *zns = zebra_ns_lookup (NS_DEFAULT); |
fb018d25 DS |
973 | |
974 | switch (nexthop->type) | |
975 | { | |
976 | case NEXTHOP_TYPE_IPV4: | |
977 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
978 | vty_out (vty, " via %s", inet_ntoa (nexthop->gate.ipv4)); | |
979 | if (nexthop->ifindex) | |
fe18ee2d | 980 | vty_out (vty, ", %s", ifindex2ifname_per_ns (zns, nexthop->ifindex)); |
fb018d25 DS |
981 | break; |
982 | case NEXTHOP_TYPE_IPV6: | |
983 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
fb018d25 DS |
984 | vty_out (vty, " %s", |
985 | inet_ntop (AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
f6b66ab3 | 986 | if (nexthop->ifindex) |
fe18ee2d | 987 | vty_out (vty, ", via %s", ifindex2ifname_per_ns (zns, nexthop->ifindex)); |
fb018d25 DS |
988 | break; |
989 | case NEXTHOP_TYPE_IFINDEX: | |
990 | vty_out (vty, " is directly connected, %s", | |
fe18ee2d | 991 | ifindex2ifname_per_ns (zns, nexthop->ifindex)); |
fb018d25 | 992 | break; |
fb018d25 DS |
993 | case NEXTHOP_TYPE_BLACKHOLE: |
994 | vty_out (vty, " is directly connected, Null0"); | |
995 | break; | |
996 | default: | |
997 | break; | |
998 | } | |
999 | vty_out(vty, "%s", VTY_NEWLINE); | |
1000 | } | |
1001 | ||
1002 | static void | |
1003 | print_rnh (struct route_node *rn, struct vty *vty) | |
1004 | { | |
1005 | struct rnh *rnh; | |
1006 | struct nexthop *nexthop; | |
1007 | struct listnode *node; | |
1008 | struct zserv *client; | |
1009 | char buf[BUFSIZ]; | |
1010 | ||
1011 | rnh = rn->info; | |
e5cc509c DS |
1012 | vty_out(vty, "%s%s%s", inet_ntop(rn->p.family, &rn->p.u.prefix, buf, BUFSIZ), |
1013 | CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED) ? "(Connected)" : "", | |
fb018d25 DS |
1014 | VTY_NEWLINE); |
1015 | if (rnh->state) | |
1016 | { | |
1017 | vty_out(vty, " resolved via %s%s", | |
1018 | zebra_route_string(rnh->state->type), VTY_NEWLINE); | |
1019 | for (nexthop = rnh->state->nexthop; nexthop; nexthop = nexthop->next) | |
1020 | print_nh(nexthop, vty); | |
1021 | } | |
1022 | else | |
fc9a856f DS |
1023 | vty_out(vty, " unresolved%s%s", |
1024 | CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED) ? "(Connected)" : "", | |
1025 | VTY_NEWLINE); | |
fb018d25 DS |
1026 | |
1027 | vty_out(vty, " Client list:"); | |
1028 | for (ALL_LIST_ELEMENTS_RO(rnh->client_list, node, client)) | |
9f0ea7d4 DS |
1029 | vty_out(vty, " %s(fd %d)%s", zebra_route_string(client->proto), |
1030 | client->sock, rnh->filtered[client->proto] ? "(filtered)" : ""); | |
6e26278c DS |
1031 | if (!list_isempty(rnh->zebra_static_route_list)) |
1032 | vty_out(vty, " zebra%s", rnh->filtered[ZEBRA_ROUTE_STATIC] ? "(filtered)" : ""); | |
fb018d25 DS |
1033 | vty_out(vty, "%s", VTY_NEWLINE); |
1034 | } |