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eb5d44eb | 1 | /* |
d62a17ae | 2 | * IS-IS Rout(e)ing protocol - isis_adjacency.c |
eb5d44eb | 3 | * handling of IS-IS adjacencies |
4 | * | |
5 | * Copyright (C) 2001,2002 Sampo Saaristo | |
d62a17ae | 6 | * Tampere University of Technology |
eb5d44eb | 7 | * Institute of Communications Engineering |
8 | * | |
d62a17ae | 9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public Licenseas published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
eb5d44eb | 12 | * any later version. |
13 | * | |
d62a17ae | 14 | * This program is distributed in the hope that it will be useful,but WITHOUT |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
eb5d44eb | 17 | * more details. |
896014f4 DL |
18 | * |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; see the file COPYING; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eb5d44eb | 22 | */ |
23 | ||
eb5d44eb | 24 | #include <zebra.h> |
eb5d44eb | 25 | |
26 | #include "log.h" | |
27 | #include "memory.h" | |
28 | #include "hash.h" | |
29 | #include "vty.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "if.h" | |
33 | #include "stream.h" | |
ae59cfd7 | 34 | #include "bfd.h" |
eb5d44eb | 35 | |
eb5d44eb | 36 | #include "isisd/isis_constants.h" |
37 | #include "isisd/isis_common.h" | |
3f045a08 | 38 | #include "isisd/isis_flags.h" |
eb5d44eb | 39 | #include "isisd/isisd.h" |
40 | #include "isisd/isis_circuit.h" | |
41 | #include "isisd/isis_adjacency.h" | |
42 | #include "isisd/isis_misc.h" | |
43 | #include "isisd/isis_dr.h" | |
44 | #include "isisd/isis_dynhn.h" | |
45 | #include "isisd/isis_pdu.h" | |
3f045a08 | 46 | #include "isisd/isis_lsp.h" |
3f045a08 | 47 | #include "isisd/isis_events.h" |
206f4aae | 48 | #include "isisd/isis_mt.h" |
42fe2621 | 49 | #include "isisd/isis_tlvs.h" |
8e6fb83b | 50 | #include "isisd/fabricd.h" |
2a1c520e | 51 | #include "isisd/isis_nb.h" |
eb5d44eb | 52 | |
66b9a381 DL |
53 | DEFINE_MTYPE_STATIC(ISISD, ISIS_ADJACENCY, "ISIS adjacency"); |
54 | DEFINE_MTYPE(ISISD, ISIS_ADJACENCY_INFO, "ISIS adjacency info"); | |
55 | ||
1ee746d9 | 56 | static struct isis_adjacency *adj_alloc(struct isis_circuit *circuit, |
57 | const uint8_t *id) | |
eb5d44eb | 58 | { |
d62a17ae | 59 | struct isis_adjacency *adj; |
eb5d44eb | 60 | |
d62a17ae | 61 | adj = XCALLOC(MTYPE_ISIS_ADJACENCY, sizeof(struct isis_adjacency)); |
62 | memcpy(adj->sysid, id, ISIS_SYS_ID_LEN); | |
f390d2c7 | 63 | |
1ee746d9 | 64 | adj->snmp_idx = ++circuit->snmp_adj_idx_gen; |
65 | ||
66 | if (circuit->snmp_adj_list == NULL) | |
67 | circuit->snmp_adj_list = list_new(); | |
68 | ||
69 | adj->snmp_list_node = listnode_add(circuit->snmp_adj_list, adj); | |
70 | ||
d62a17ae | 71 | return adj; |
eb5d44eb | 72 | } |
73 | ||
d7c0a89a | 74 | struct isis_adjacency *isis_new_adj(const uint8_t *id, const uint8_t *snpa, |
d62a17ae | 75 | int level, struct isis_circuit *circuit) |
eb5d44eb | 76 | { |
d62a17ae | 77 | struct isis_adjacency *adj; |
78 | int i; | |
79 | ||
1ee746d9 | 80 | adj = adj_alloc(circuit, id); /* P2P kludge */ |
d62a17ae | 81 | |
d62a17ae | 82 | if (snpa) { |
83 | memcpy(adj->snpa, snpa, ETH_ALEN); | |
84 | } else { | |
85 | memset(adj->snpa, ' ', ETH_ALEN); | |
eb5d44eb | 86 | } |
eb5d44eb | 87 | |
d62a17ae | 88 | adj->circuit = circuit; |
89 | adj->level = level; | |
90 | adj->flaps = 0; | |
91 | adj->last_flap = time(NULL); | |
42fe2621 | 92 | adj->threeway_state = ISIS_THREEWAY_DOWN; |
d62a17ae | 93 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { |
94 | listnode_add(circuit->u.bc.adjdb[level - 1], adj); | |
95 | adj->dischanges[level - 1] = 0; | |
96 | for (i = 0; i < DIS_RECORDS; | |
97 | i++) /* clear N DIS state change records */ | |
98 | { | |
99 | adj->dis_record[(i * ISIS_LEVELS) + level - 1].dis = | |
100 | ISIS_UNKNOWN_DIS; | |
101 | adj->dis_record[(i * ISIS_LEVELS) + level - 1] | |
102 | .last_dis_change = time(NULL); | |
103 | } | |
104 | } | |
26f6acaf | 105 | adj->adj_sids = list_new(); |
75eddbc3 | 106 | listnode_add(circuit->area->adjacency_list, adj); |
d62a17ae | 107 | |
108 | return adj; | |
eb5d44eb | 109 | } |
110 | ||
d7c0a89a | 111 | struct isis_adjacency *isis_adj_lookup(const uint8_t *sysid, struct list *adjdb) |
eb5d44eb | 112 | { |
d62a17ae | 113 | struct isis_adjacency *adj; |
114 | struct listnode *node; | |
eb5d44eb | 115 | |
d62a17ae | 116 | for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj)) |
117 | if (memcmp(adj->sysid, sysid, ISIS_SYS_ID_LEN) == 0) | |
118 | return adj; | |
f390d2c7 | 119 | |
d62a17ae | 120 | return NULL; |
eb5d44eb | 121 | } |
122 | ||
d7c0a89a | 123 | struct isis_adjacency *isis_adj_lookup_snpa(const uint8_t *ssnpa, |
d62a17ae | 124 | struct list *adjdb) |
eb5d44eb | 125 | { |
d62a17ae | 126 | struct listnode *node; |
127 | struct isis_adjacency *adj; | |
eb5d44eb | 128 | |
d62a17ae | 129 | for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj)) |
130 | if (memcmp(adj->snpa, ssnpa, ETH_ALEN) == 0) | |
131 | return adj; | |
f390d2c7 | 132 | |
d62a17ae | 133 | return NULL; |
eb5d44eb | 134 | } |
135 | ||
75eddbc3 RW |
136 | struct isis_adjacency *isis_adj_find(const struct isis_area *area, int level, |
137 | const uint8_t *sysid) | |
26f6acaf | 138 | { |
75eddbc3 | 139 | struct isis_adjacency *adj; |
26f6acaf RW |
140 | struct listnode *node; |
141 | ||
75eddbc3 RW |
142 | for (ALL_LIST_ELEMENTS_RO(area->adjacency_list, node, adj)) { |
143 | if (!(adj->level & level)) | |
144 | continue; | |
145 | ||
146 | if (!memcmp(adj->sysid, sysid, ISIS_SYS_ID_LEN)) | |
147 | return adj; | |
26f6acaf RW |
148 | } |
149 | ||
75eddbc3 | 150 | return NULL; |
26f6acaf RW |
151 | } |
152 | ||
8451921b | 153 | DEFINE_HOOK(isis_adj_state_change_hook, (struct isis_adjacency *adj), (adj)); |
a5b5e946 | 154 | |
d62a17ae | 155 | void isis_delete_adj(void *arg) |
eb5d44eb | 156 | { |
d62a17ae | 157 | struct isis_adjacency *adj = arg; |
3f045a08 | 158 | |
d62a17ae | 159 | if (!adj) |
160 | return; | |
1ee746d9 | 161 | /* Remove self from snmp list without walking the list*/ |
162 | list_delete_node(adj->circuit->snmp_adj_list, adj->snmp_list_node); | |
f390d2c7 | 163 | |
fa935aa7 | 164 | THREAD_OFF(adj->t_expire); |
690497fb | 165 | if (adj->adj_state != ISIS_ADJ_DOWN) |
a5b5e946 | 166 | adj->adj_state = ISIS_ADJ_DOWN; |
3f045a08 | 167 | |
690497fb G |
168 | hook_call(isis_adj_state_change_hook, adj); |
169 | ||
0a22ddfb QY |
170 | XFREE(MTYPE_ISIS_ADJACENCY_INFO, adj->area_addresses); |
171 | XFREE(MTYPE_ISIS_ADJACENCY_INFO, adj->ipv4_addresses); | |
173f8887 | 172 | XFREE(MTYPE_ISIS_ADJACENCY_INFO, adj->ll_ipv6_addrs); |
27383c1c | 173 | XFREE(MTYPE_ISIS_ADJACENCY_INFO, adj->global_ipv6_addrs); |
d62a17ae | 174 | adj_mt_finish(adj); |
26f6acaf | 175 | list_delete(&adj->adj_sids); |
d8fba7d9 | 176 | |
75eddbc3 | 177 | listnode_delete(adj->circuit->area->adjacency_list, adj); |
d62a17ae | 178 | XFREE(MTYPE_ISIS_ADJACENCY, adj); |
179 | return; | |
eb5d44eb | 180 | } |
181 | ||
d62a17ae | 182 | static const char *adj_state2string(int state) |
3f045a08 JB |
183 | { |
184 | ||
d62a17ae | 185 | switch (state) { |
186 | case ISIS_ADJ_INITIALIZING: | |
187 | return "Initializing"; | |
188 | case ISIS_ADJ_UP: | |
189 | return "Up"; | |
190 | case ISIS_ADJ_DOWN: | |
191 | return "Down"; | |
192 | default: | |
193 | return "Unknown"; | |
194 | } | |
195 | ||
196 | return NULL; /* not reached */ | |
3f045a08 JB |
197 | } |
198 | ||
7145d5bb EDP |
199 | static const char *adj_level2string(int level) |
200 | { | |
201 | switch (level) { | |
202 | case IS_LEVEL_1: | |
203 | return "level-1"; | |
204 | case IS_LEVEL_2: | |
205 | return "level-2"; | |
206 | case IS_LEVEL_1_AND_2: | |
207 | return "level-1-2"; | |
208 | default: | |
209 | return "unknown"; | |
210 | } | |
211 | ||
212 | return NULL; /* not reached */ | |
213 | } | |
214 | ||
694fa867 LS |
215 | static void isis_adj_route_switchover(struct isis_adjacency *adj) |
216 | { | |
217 | union g_addr ip = {}; | |
218 | ifindex_t ifindex; | |
219 | unsigned int i; | |
220 | ||
221 | if (!adj->circuit || !adj->circuit->interface) | |
222 | return; | |
223 | ||
224 | ifindex = adj->circuit->interface->ifindex; | |
225 | ||
226 | for (i = 0; i < adj->ipv4_address_count; i++) { | |
227 | ip.ipv4 = adj->ipv4_addresses[i]; | |
228 | isis_circuit_switchover_routes(adj->circuit, AF_INET, &ip, | |
229 | ifindex); | |
230 | } | |
231 | ||
232 | for (i = 0; i < adj->ll_ipv6_count; i++) { | |
233 | ip.ipv6 = adj->ll_ipv6_addrs[i]; | |
234 | isis_circuit_switchover_routes(adj->circuit, AF_INET6, &ip, | |
235 | ifindex); | |
236 | } | |
237 | ||
238 | for (i = 0; i < adj->global_ipv6_count; i++) { | |
239 | ip.ipv6 = adj->global_ipv6_addrs[i]; | |
240 | isis_circuit_switchover_routes(adj->circuit, AF_INET6, &ip, | |
241 | ifindex); | |
242 | } | |
243 | } | |
244 | ||
42fe2621 CF |
245 | void isis_adj_process_threeway(struct isis_adjacency *adj, |
246 | struct isis_threeway_adj *tw_adj, | |
247 | enum isis_adj_usage adj_usage) | |
248 | { | |
249 | enum isis_threeway_state next_tw_state = ISIS_THREEWAY_DOWN; | |
250 | ||
58e5d748 | 251 | if (tw_adj && !adj->circuit->disable_threeway_adj) { |
42fe2621 CF |
252 | if (tw_adj->state == ISIS_THREEWAY_DOWN) { |
253 | next_tw_state = ISIS_THREEWAY_INITIALIZING; | |
254 | } else if (tw_adj->state == ISIS_THREEWAY_INITIALIZING) { | |
255 | next_tw_state = ISIS_THREEWAY_UP; | |
256 | } else if (tw_adj->state == ISIS_THREEWAY_UP) { | |
257 | if (adj->threeway_state == ISIS_THREEWAY_DOWN) | |
258 | next_tw_state = ISIS_THREEWAY_DOWN; | |
259 | else | |
260 | next_tw_state = ISIS_THREEWAY_UP; | |
261 | } | |
262 | } else { | |
263 | next_tw_state = ISIS_THREEWAY_UP; | |
264 | } | |
265 | ||
266 | if (next_tw_state != adj->threeway_state) { | |
e740f9c1 | 267 | if (IS_DEBUG_ADJ_PACKETS) { |
42fe2621 CF |
268 | zlog_info("ISIS-Adj (%s): Threeway state change %s to %s", |
269 | adj->circuit->area->area_tag, | |
270 | isis_threeway_state_name(adj->threeway_state), | |
271 | isis_threeway_state_name(next_tw_state)); | |
272 | } | |
273 | } | |
274 | ||
8e6fb83b CF |
275 | if (next_tw_state != ISIS_THREEWAY_DOWN) |
276 | fabricd_initial_sync_hello(adj->circuit); | |
277 | ||
42fe2621 | 278 | if (next_tw_state == ISIS_THREEWAY_DOWN) { |
16167b31 DS |
279 | isis_adj_state_change(&adj, ISIS_ADJ_DOWN, |
280 | "Neighbor restarted"); | |
42fe2621 CF |
281 | return; |
282 | } | |
283 | ||
284 | if (next_tw_state == ISIS_THREEWAY_UP) { | |
285 | if (adj->adj_state != ISIS_ADJ_UP) { | |
16167b31 | 286 | isis_adj_state_change(&adj, ISIS_ADJ_UP, NULL); |
42fe2621 CF |
287 | adj->adj_usage = adj_usage; |
288 | } | |
289 | } | |
290 | ||
5346acec CF |
291 | if (adj->threeway_state != next_tw_state) { |
292 | send_hello_sched(adj->circuit, 0, TRIGGERED_IIH_DELAY); | |
293 | } | |
294 | ||
42fe2621 CF |
295 | adj->threeway_state = next_tw_state; |
296 | } | |
0d5b1a3a | 297 | const char *isis_adj_name(const struct isis_adjacency *adj) |
7145d5bb | 298 | { |
0d5b1a3a EDP |
299 | if (!adj) |
300 | return "NONE"; | |
301 | ||
7145d5bb EDP |
302 | struct isis_dynhn *dyn; |
303 | ||
240f48b3 | 304 | dyn = dynhn_find_by_id(adj->circuit->isis, adj->sysid); |
7145d5bb | 305 | if (dyn) |
0d5b1a3a | 306 | return dyn->hostname; |
7145d5bb | 307 | else |
0d5b1a3a EDP |
308 | return sysid_print(adj->sysid); |
309 | } | |
310 | void isis_log_adj_change(struct isis_adjacency *adj, | |
311 | enum isis_adj_state old_state, | |
312 | enum isis_adj_state new_state, const char *reason) | |
313 | { | |
7145d5bb EDP |
314 | zlog_info( |
315 | "%%ADJCHANGE: Adjacency to %s (%s) for %s changed from %s to %s, %s", | |
0d5b1a3a | 316 | isis_adj_name(adj), adj->circuit->interface->name, |
7145d5bb EDP |
317 | adj_level2string(adj->level), adj_state2string(old_state), |
318 | adj_state2string(new_state), reason ? reason : "unspecified"); | |
319 | } | |
16167b31 | 320 | void isis_adj_state_change(struct isis_adjacency **padj, |
d62a17ae | 321 | enum isis_adj_state new_state, const char *reason) |
eb5d44eb | 322 | { |
16167b31 | 323 | struct isis_adjacency *adj = *padj; |
5346acec CF |
324 | enum isis_adj_state old_state = adj->adj_state; |
325 | struct isis_circuit *circuit = adj->circuit; | |
16167b31 | 326 | bool del = false; |
d62a17ae | 327 | |
8cea0065 EDP |
328 | if (new_state == old_state) |
329 | return; | |
330 | ||
4e689dcd LS |
331 | if (old_state == ISIS_ADJ_UP && |
332 | !CHECK_FLAG(adj->circuit->flags, ISIS_CIRCUIT_IF_DOWN_FROM_Z)) { | |
694fa867 LS |
333 | if (IS_DEBUG_EVENTS) |
334 | zlog_debug( | |
335 | "ISIS-Adj (%s): Starting fast-reroute on state change %d->%d: %s", | |
336 | circuit->area->area_tag, old_state, new_state, | |
337 | reason ? reason : "unspecified"); | |
338 | isis_adj_route_switchover(adj); | |
339 | } | |
340 | ||
d62a17ae | 341 | adj->adj_state = new_state; |
8cea0065 | 342 | send_hello_sched(circuit, adj->level, TRIGGERED_IIH_DELAY); |
d62a17ae | 343 | |
e740f9c1 | 344 | if (IS_DEBUG_ADJ_PACKETS) { |
d62a17ae | 345 | zlog_debug("ISIS-Adj (%s): Adjacency state change %d->%d: %s", |
346 | circuit->area->area_tag, old_state, new_state, | |
347 | reason ? reason : "unspecified"); | |
348 | } | |
349 | ||
7145d5bb EDP |
350 | if (circuit->area->log_adj_changes) |
351 | isis_log_adj_change(adj, old_state, new_state, reason); | |
d62a17ae | 352 | |
de983bb8 EDP |
353 | #ifndef FABRICD |
354 | /* send northbound notification */ | |
355 | isis_notif_adj_state_change(adj, new_state, reason); | |
356 | #endif /* ifndef FABRICD */ | |
357 | ||
d62a17ae | 358 | if (circuit->circ_type == CIRCUIT_T_BROADCAST) { |
5346acec | 359 | for (int level = IS_LEVEL_1; level <= IS_LEVEL_2; level++) { |
d62a17ae | 360 | if ((adj->level & level) == 0) |
361 | continue; | |
362 | if (new_state == ISIS_ADJ_UP) { | |
1ee746d9 | 363 | circuit->adj_state_changes++; |
d62a17ae | 364 | circuit->upadjcount[level - 1]++; |
d62a17ae | 365 | /* update counter & timers for debugging |
366 | * purposes */ | |
367 | adj->last_flap = time(NULL); | |
368 | adj->flaps++; | |
8cea0065 | 369 | } else if (old_state == ISIS_ADJ_UP) { |
1ee746d9 | 370 | circuit->adj_state_changes++; |
58e16237 | 371 | |
d62a17ae | 372 | circuit->upadjcount[level - 1]--; |
58e16237 | 373 | if (circuit->upadjcount[level - 1] == 0) |
9b39405f | 374 | isis_tx_queue_clean(circuit->tx_queue); |
58e16237 | 375 | |
7209d2a4 IR |
376 | if (new_state == ISIS_ADJ_DOWN) { |
377 | listnode_delete( | |
378 | circuit->u.bc.adjdb[level - 1], | |
379 | adj); | |
380 | ||
8cea0065 | 381 | del = true; |
7209d2a4 | 382 | } |
d62a17ae | 383 | } |
384 | ||
385 | if (circuit->u.bc.lan_neighs[level - 1]) { | |
386 | list_delete_all_node( | |
387 | circuit->u.bc.lan_neighs[level - 1]); | |
388 | isis_adj_build_neigh_list( | |
389 | circuit->u.bc.adjdb[level - 1], | |
390 | circuit->u.bc.lan_neighs[level - 1]); | |
391 | } | |
392 | ||
393 | /* On adjacency state change send new pseudo LSP if we | |
394 | * are the DR */ | |
395 | if (circuit->u.bc.is_dr[level - 1]) | |
396 | lsp_regenerate_schedule_pseudo(circuit, level); | |
397 | } | |
398 | ||
d62a17ae | 399 | } else if (circuit->circ_type == CIRCUIT_T_P2P) { |
5346acec | 400 | for (int level = IS_LEVEL_1; level <= IS_LEVEL_2; level++) { |
d62a17ae | 401 | if ((adj->level & level) == 0) |
402 | continue; | |
403 | if (new_state == ISIS_ADJ_UP) { | |
404 | circuit->upadjcount[level - 1]++; | |
d62a17ae | 405 | |
d62a17ae | 406 | /* update counter & timers for debugging |
407 | * purposes */ | |
408 | adj->last_flap = time(NULL); | |
409 | adj->flaps++; | |
410 | ||
8e6fb83b CF |
411 | if (level == IS_LEVEL_1) { |
412 | thread_add_timer(master, send_l1_csnp, | |
413 | circuit, 0, | |
414 | &circuit->t_send_csnp[0]); | |
415 | } else { | |
416 | thread_add_timer(master, send_l2_csnp, | |
417 | circuit, 0, | |
418 | &circuit->t_send_csnp[1]); | |
419 | } | |
8cea0065 | 420 | } else if (old_state == ISIS_ADJ_UP) { |
d62a17ae | 421 | circuit->upadjcount[level - 1]--; |
58e16237 | 422 | if (circuit->upadjcount[level - 1] == 0) |
9b39405f | 423 | isis_tx_queue_clean(circuit->tx_queue); |
58e16237 | 424 | |
7209d2a4 IR |
425 | if (new_state == ISIS_ADJ_DOWN) { |
426 | if (adj->circuit->u.p2p.neighbor == adj) | |
427 | adj->circuit->u.p2p.neighbor = | |
428 | NULL; | |
429 | ||
8cea0065 | 430 | del = true; |
7209d2a4 | 431 | } |
d62a17ae | 432 | } |
433 | } | |
16167b31 | 434 | } |
d62a17ae | 435 | |
e4229afd EDP |
436 | hook_call(isis_adj_state_change_hook, adj); |
437 | ||
16167b31 DS |
438 | if (del) { |
439 | isis_delete_adj(adj); | |
440 | *padj = NULL; | |
d62a17ae | 441 | } |
eb5d44eb | 442 | } |
443 | ||
444 | ||
d62a17ae | 445 | void isis_adj_print(struct isis_adjacency *adj) |
eb5d44eb | 446 | { |
d62a17ae | 447 | struct isis_dynhn *dyn; |
d62a17ae | 448 | |
449 | if (!adj) | |
450 | return; | |
240f48b3 | 451 | dyn = dynhn_find_by_id(adj->circuit->isis, adj->sysid); |
d62a17ae | 452 | if (dyn) |
af8ac8f9 | 453 | zlog_debug("%s", dyn->hostname); |
d62a17ae | 454 | |
63efca0e | 455 | zlog_debug("SystemId %20s SNPA %s, level %d; Holding Time %d", |
d62a17ae | 456 | sysid_print(adj->sysid), snpa_print(adj->snpa), adj->level, |
457 | adj->hold_time); | |
0c1bd758 | 458 | if (adj->ipv4_address_count) { |
d62a17ae | 459 | zlog_debug("IPv4 Address(es):"); |
0c1bd758 | 460 | for (unsigned int i = 0; i < adj->ipv4_address_count; i++) |
a854ea43 | 461 | zlog_debug("%pI4", &adj->ipv4_addresses[i]); |
d62a17ae | 462 | } |
463 | ||
173f8887 | 464 | if (adj->ll_ipv6_count) { |
d62a17ae | 465 | zlog_debug("IPv6 Address(es):"); |
173f8887 | 466 | for (unsigned int i = 0; i < adj->ll_ipv6_count; i++) { |
0c1bd758 | 467 | char buf[INET6_ADDRSTRLEN]; |
173f8887 | 468 | inet_ntop(AF_INET6, &adj->ll_ipv6_addrs[i], buf, |
0c1bd758 CF |
469 | sizeof(buf)); |
470 | zlog_debug("%s", buf); | |
d62a17ae | 471 | } |
f390d2c7 | 472 | } |
d62a17ae | 473 | zlog_debug("Speaks: %s", nlpid2string(&adj->nlpids)); |
eb5d44eb | 474 | |
d62a17ae | 475 | return; |
eb5d44eb | 476 | } |
477 | ||
2a1c520e RW |
478 | const char *isis_adj_yang_state(enum isis_adj_state state) |
479 | { | |
480 | switch (state) { | |
481 | case ISIS_ADJ_DOWN: | |
482 | return "down"; | |
483 | case ISIS_ADJ_UP: | |
484 | return "up"; | |
485 | case ISIS_ADJ_INITIALIZING: | |
486 | return "init"; | |
a348c945 | 487 | case ISIS_ADJ_UNKNOWN: |
2a1c520e RW |
488 | return "failed"; |
489 | } | |
a348c945 DS |
490 | |
491 | assert(!"Reached end of function where we are not expecting to"); | |
2a1c520e RW |
492 | } |
493 | ||
cc9f21da | 494 | void isis_adj_expire(struct thread *thread) |
eb5d44eb | 495 | { |
d62a17ae | 496 | struct isis_adjacency *adj; |
eb5d44eb | 497 | |
d62a17ae | 498 | /* |
499 | * Get the adjacency | |
500 | */ | |
501 | adj = THREAD_ARG(thread); | |
502 | assert(adj); | |
503 | adj->t_expire = NULL; | |
eb5d44eb | 504 | |
d62a17ae | 505 | /* trigger the adj expire event */ |
16167b31 | 506 | isis_adj_state_change(&adj, ISIS_ADJ_DOWN, "holding time expired"); |
eb5d44eb | 507 | } |
508 | ||
a21177f2 JG |
509 | /* |
510 | * show isis neighbor [detail] json | |
511 | */ | |
512 | void isis_adj_print_json(struct isis_adjacency *adj, struct json_object *json, | |
513 | char detail) | |
514 | { | |
515 | json_object *iface_json, *ipv4_addr_json, *ipv6_link_json, | |
516 | *ipv6_non_link_json, *topo_json, *dis_flaps_json, | |
517 | *area_addr_json, *adj_sid_json; | |
518 | time_t now; | |
519 | struct isis_dynhn *dyn; | |
520 | int level; | |
521 | char buf[256]; | |
522 | ||
523 | json_object_string_add(json, "adj", isis_adj_name(adj)); | |
524 | ||
525 | if (detail == ISIS_UI_LEVEL_BRIEF) { | |
526 | if (adj->circuit) | |
527 | json_object_string_add(json, "interface", | |
528 | adj->circuit->interface->name); | |
529 | else | |
530 | json_object_string_add(json, "interface", | |
531 | "NULL circuit!"); | |
532 | json_object_int_add(json, "level", adj->level); | |
533 | json_object_string_add(json, "state", | |
534 | adj_state2string(adj->adj_state)); | |
535 | now = time(NULL); | |
536 | if (adj->last_upd) { | |
537 | if (adj->last_upd + adj->hold_time < now) | |
538 | json_object_string_add(json, "last-upd", | |
539 | "expiring"); | |
540 | else | |
541 | json_object_string_add( | |
542 | json, "expires-in", | |
543 | time2string(adj->last_upd + | |
544 | adj->hold_time - now)); | |
545 | } | |
546 | json_object_string_add(json, "snpa", snpa_print(adj->snpa)); | |
547 | } | |
548 | ||
549 | if (detail == ISIS_UI_LEVEL_DETAIL) { | |
550 | struct sr_adjacency *sra; | |
551 | struct listnode *anode; | |
552 | ||
553 | level = adj->level; | |
554 | iface_json = json_object_new_object(); | |
555 | json_object_object_add(json, "interface", iface_json); | |
556 | if (adj->circuit) | |
557 | json_object_string_add(iface_json, "name", | |
558 | adj->circuit->interface->name); | |
559 | else | |
560 | json_object_string_add(iface_json, "name", | |
561 | "null-circuit"); | |
562 | json_object_int_add(json, "level", adj->level); | |
563 | json_object_string_add(iface_json, "state", | |
564 | adj_state2string(adj->adj_state)); | |
565 | now = time(NULL); | |
566 | if (adj->last_upd) { | |
567 | if (adj->last_upd + adj->hold_time < now) | |
568 | json_object_string_add(iface_json, "last-upd", | |
569 | "expiring"); | |
570 | else | |
571 | json_object_string_add( | |
572 | json, "expires-in", | |
573 | time2string(adj->last_upd + | |
574 | adj->hold_time - now)); | |
575 | } else | |
576 | json_object_string_add(json, "expires-in", | |
577 | time2string(adj->hold_time)); | |
578 | json_object_int_add(iface_json, "adj-flaps", adj->flaps); | |
579 | json_object_string_add(iface_json, "last-ago", | |
580 | time2string(now - adj->last_flap)); | |
581 | json_object_string_add(iface_json, "circuit-type", | |
582 | circuit_t2string(adj->circuit_t)); | |
583 | json_object_string_add(iface_json, "speaks", | |
584 | nlpid2string(&adj->nlpids)); | |
585 | if (adj->mt_count != 1 || | |
586 | adj->mt_set[0] != ISIS_MT_IPV4_UNICAST) { | |
587 | topo_json = json_object_new_object(); | |
588 | json_object_object_add(iface_json, "topologies", | |
589 | topo_json); | |
590 | for (unsigned int i = 0; i < adj->mt_count; i++) { | |
591 | snprintfrr(buf, sizeof(buf), "topo-%d", i); | |
592 | json_object_string_add( | |
593 | topo_json, buf, | |
594 | isis_mtid2str(adj->mt_set[i])); | |
595 | } | |
596 | } | |
597 | json_object_string_add(iface_json, "snpa", | |
598 | snpa_print(adj->snpa)); | |
599 | if (adj->circuit && | |
600 | (adj->circuit->circ_type == CIRCUIT_T_BROADCAST)) { | |
601 | dyn = dynhn_find_by_id(adj->circuit->isis, adj->lanid); | |
602 | if (dyn) { | |
603 | snprintfrr(buf, sizeof(buf), "%s-%02x", | |
604 | dyn->hostname, | |
605 | adj->lanid[ISIS_SYS_ID_LEN]); | |
606 | json_object_string_add(iface_json, "lan-id", | |
607 | buf); | |
608 | } else { | |
609 | snprintfrr(buf, sizeof(buf), "%s-%02x", | |
610 | sysid_print(adj->lanid), | |
611 | adj->lanid[ISIS_SYS_ID_LEN]); | |
612 | json_object_string_add(iface_json, "lan-id", | |
613 | buf); | |
614 | } | |
615 | ||
616 | json_object_int_add(iface_json, "lan-prio", | |
617 | adj->prio[adj->level - 1]); | |
618 | ||
619 | dis_flaps_json = json_object_new_object(); | |
620 | json_object_object_add(iface_json, "dis-flaps", | |
621 | dis_flaps_json); | |
622 | json_object_string_add( | |
623 | dis_flaps_json, "dis-record", | |
624 | isis_disflag2string( | |
625 | adj->dis_record[ISIS_LEVELS + level - 1] | |
626 | .dis)); | |
627 | json_object_int_add(dis_flaps_json, "last", | |
628 | adj->dischanges[level - 1]); | |
629 | json_object_string_add( | |
630 | dis_flaps_json, "ago", | |
631 | time2string(now - (adj->dis_record[ISIS_LEVELS + | |
632 | level - 1] | |
633 | .last_dis_change))); | |
634 | } | |
635 | ||
636 | if (adj->area_address_count) { | |
637 | area_addr_json = json_object_new_object(); | |
638 | json_object_object_add(iface_json, "area-address", | |
639 | area_addr_json); | |
640 | for (unsigned int i = 0; i < adj->area_address_count; | |
641 | i++) { | |
642 | json_object_string_add( | |
643 | area_addr_json, "isonet", | |
644 | isonet_print(adj->area_addresses[i] | |
645 | .area_addr, | |
646 | adj->area_addresses[i] | |
647 | .addr_len)); | |
648 | } | |
649 | } | |
650 | if (adj->ipv4_address_count) { | |
651 | ipv4_addr_json = json_object_new_object(); | |
652 | json_object_object_add(iface_json, "ipv4-address", | |
653 | ipv4_addr_json); | |
654 | for (unsigned int i = 0; i < adj->ipv4_address_count; | |
655 | i++){ | |
656 | inet_ntop(AF_INET, &adj->ipv4_addresses[i], buf, | |
657 | sizeof(buf)); | |
658 | json_object_string_add(ipv4_addr_json, "ipv4", buf); | |
659 | } | |
660 | } | |
661 | if (adj->ll_ipv6_count) { | |
662 | ipv6_link_json = json_object_new_object(); | |
663 | json_object_object_add(iface_json, "ipv6-link-local", | |
664 | ipv6_link_json); | |
665 | for (unsigned int i = 0; i < adj->ll_ipv6_count; i++) { | |
666 | char buf[INET6_ADDRSTRLEN]; | |
667 | inet_ntop(AF_INET6, &adj->ll_ipv6_addrs[i], buf, | |
668 | sizeof(buf)); | |
669 | json_object_string_add(ipv6_link_json, "ipv6", | |
670 | buf); | |
671 | } | |
672 | } | |
673 | if (adj->global_ipv6_count) { | |
674 | ipv6_non_link_json = json_object_new_object(); | |
675 | json_object_object_add(iface_json, "ipv6-global", | |
676 | ipv6_non_link_json); | |
677 | for (unsigned int i = 0; i < adj->global_ipv6_count; | |
678 | i++) { | |
679 | char buf[INET6_ADDRSTRLEN]; | |
680 | inet_ntop(AF_INET6, &adj->global_ipv6_addrs[i], | |
681 | buf, sizeof(buf)); | |
682 | json_object_string_add(ipv6_non_link_json, | |
683 | "ipv6", buf); | |
684 | } | |
685 | } | |
686 | ||
687 | adj_sid_json = json_object_new_object(); | |
688 | json_object_object_add(iface_json, "adj-sid", adj_sid_json); | |
689 | for (ALL_LIST_ELEMENTS_RO(adj->adj_sids, anode, sra)) { | |
690 | const char *adj_type; | |
691 | const char *backup; | |
692 | uint32_t sid; | |
693 | ||
694 | switch (sra->adj->circuit->circ_type) { | |
695 | case CIRCUIT_T_BROADCAST: | |
696 | adj_type = "LAN Adjacency-SID"; | |
697 | sid = sra->u.ladj_sid->sid; | |
698 | break; | |
699 | case CIRCUIT_T_P2P: | |
700 | adj_type = "Adjacency-SID"; | |
701 | sid = sra->u.adj_sid->sid; | |
702 | break; | |
703 | default: | |
704 | continue; | |
705 | } | |
706 | backup = (sra->type == ISIS_SR_LAN_BACKUP) ? " (backup)" | |
707 | : ""; | |
708 | ||
709 | json_object_string_add(adj_sid_json, "nexthop", | |
710 | (sra->nexthop.family == AF_INET) | |
711 | ? "IPv4" | |
712 | : "IPv6"); | |
713 | json_object_string_add(adj_sid_json, "adj-type", | |
714 | adj_type); | |
715 | json_object_string_add(adj_sid_json, "is-backup", | |
716 | backup); | |
717 | json_object_int_add(adj_sid_json, "sid", sid); | |
718 | } | |
719 | } | |
720 | return; | |
721 | } | |
722 | ||
eb5d44eb | 723 | /* |
3f045a08 | 724 | * show isis neighbor [detail] |
eb5d44eb | 725 | */ |
d62a17ae | 726 | void isis_adj_print_vty(struct isis_adjacency *adj, struct vty *vty, |
727 | char detail) | |
eb5d44eb | 728 | { |
d62a17ae | 729 | time_t now; |
730 | struct isis_dynhn *dyn; | |
731 | int level; | |
d62a17ae | 732 | |
0d5b1a3a | 733 | vty_out(vty, " %-20s", isis_adj_name(adj)); |
d62a17ae | 734 | |
735 | if (detail == ISIS_UI_LEVEL_BRIEF) { | |
736 | if (adj->circuit) | |
737 | vty_out(vty, "%-12s", adj->circuit->interface->name); | |
738 | else | |
739 | vty_out(vty, "NULL circuit!"); | |
740 | vty_out(vty, "%-3u", adj->level); /* level */ | |
741 | vty_out(vty, "%-13s", adj_state2string(adj->adj_state)); | |
742 | now = time(NULL); | |
3cbe31c7 | 743 | if (adj->last_upd) { |
ac716cdf | 744 | if (adj->last_upd + adj->hold_time < now) |
3cbe31c7 EDP |
745 | vty_out(vty, " Expiring"); |
746 | else | |
747 | vty_out(vty, " %-9llu", | |
748 | (unsigned long long)adj->last_upd | |
749 | + adj->hold_time - now); | |
750 | } else | |
d62a17ae | 751 | vty_out(vty, "- "); |
752 | vty_out(vty, "%-10s", snpa_print(adj->snpa)); | |
753 | vty_out(vty, "\n"); | |
f390d2c7 | 754 | } |
d62a17ae | 755 | |
756 | if (detail == ISIS_UI_LEVEL_DETAIL) { | |
26f6acaf RW |
757 | struct sr_adjacency *sra; |
758 | struct listnode *anode; | |
759 | ||
d62a17ae | 760 | level = adj->level; |
761 | vty_out(vty, "\n"); | |
762 | if (adj->circuit) | |
763 | vty_out(vty, " Interface: %s", | |
764 | adj->circuit->interface->name); | |
765 | else | |
766 | vty_out(vty, " Interface: NULL circuit"); | |
767 | vty_out(vty, ", Level: %u", adj->level); /* level */ | |
768 | vty_out(vty, ", State: %s", adj_state2string(adj->adj_state)); | |
769 | now = time(NULL); | |
3cbe31c7 | 770 | if (adj->last_upd) { |
ac716cdf | 771 | if (adj->last_upd + adj->hold_time < now) |
3cbe31c7 EDP |
772 | vty_out(vty, " Expiring"); |
773 | else | |
774 | vty_out(vty, ", Expires in %s", | |
775 | time2string(adj->last_upd | |
776 | + adj->hold_time - now)); | |
777 | } else | |
d62a17ae | 778 | vty_out(vty, ", Expires in %s", |
779 | time2string(adj->hold_time)); | |
780 | vty_out(vty, "\n"); | |
781 | vty_out(vty, " Adjacency flaps: %u", adj->flaps); | |
782 | vty_out(vty, ", Last: %s ago", | |
783 | time2string(now - adj->last_flap)); | |
784 | vty_out(vty, "\n"); | |
785 | vty_out(vty, " Circuit type: %s", | |
786 | circuit_t2string(adj->circuit_t)); | |
787 | vty_out(vty, ", Speaks: %s", nlpid2string(&adj->nlpids)); | |
788 | vty_out(vty, "\n"); | |
789 | if (adj->mt_count != 1 | |
790 | || adj->mt_set[0] != ISIS_MT_IPV4_UNICAST) { | |
791 | vty_out(vty, " Topologies:\n"); | |
792 | for (unsigned int i = 0; i < adj->mt_count; i++) | |
793 | vty_out(vty, " %s\n", | |
794 | isis_mtid2str(adj->mt_set[i])); | |
795 | } | |
796 | vty_out(vty, " SNPA: %s", snpa_print(adj->snpa)); | |
797 | if (adj->circuit | |
798 | && (adj->circuit->circ_type == CIRCUIT_T_BROADCAST)) { | |
240f48b3 | 799 | dyn = dynhn_find_by_id(adj->circuit->isis, adj->lanid); |
d62a17ae | 800 | if (dyn) |
af8ac8f9 | 801 | vty_out(vty, ", LAN id: %s.%02x", dyn->hostname, |
d62a17ae | 802 | adj->lanid[ISIS_SYS_ID_LEN]); |
803 | else | |
804 | vty_out(vty, ", LAN id: %s.%02x", | |
805 | sysid_print(adj->lanid), | |
806 | adj->lanid[ISIS_SYS_ID_LEN]); | |
807 | ||
808 | vty_out(vty, "\n"); | |
809 | vty_out(vty, " LAN Priority: %u", | |
810 | adj->prio[adj->level - 1]); | |
811 | ||
812 | vty_out(vty, ", %s, DIS flaps: %u, Last: %s ago", | |
813 | isis_disflag2string( | |
814 | adj->dis_record[ISIS_LEVELS + level - 1] | |
815 | .dis), | |
816 | adj->dischanges[level - 1], | |
9d303b37 DL |
817 | time2string(now - (adj->dis_record[ISIS_LEVELS |
818 | + level - 1] | |
819 | .last_dis_change))); | |
d62a17ae | 820 | } |
821 | vty_out(vty, "\n"); | |
822 | ||
0c1bd758 | 823 | if (adj->area_address_count) { |
d62a17ae | 824 | vty_out(vty, " Area Address(es):\n"); |
0c1bd758 CF |
825 | for (unsigned int i = 0; i < adj->area_address_count; |
826 | i++) { | |
d62a17ae | 827 | vty_out(vty, " %s\n", |
996c9314 LB |
828 | isonet_print(adj->area_addresses[i] |
829 | .area_addr, | |
830 | adj->area_addresses[i] | |
831 | .addr_len)); | |
0c1bd758 | 832 | } |
d62a17ae | 833 | } |
0c1bd758 | 834 | if (adj->ipv4_address_count) { |
d62a17ae | 835 | vty_out(vty, " IPv4 Address(es):\n"); |
0c1bd758 CF |
836 | for (unsigned int i = 0; i < adj->ipv4_address_count; |
837 | i++) | |
a854ea43 MS |
838 | vty_out(vty, " %pI4\n", |
839 | &adj->ipv4_addresses[i]); | |
d62a17ae | 840 | } |
173f8887 | 841 | if (adj->ll_ipv6_count) { |
d62a17ae | 842 | vty_out(vty, " IPv6 Address(es):\n"); |
173f8887 OD |
843 | for (unsigned int i = 0; i < adj->ll_ipv6_count; i++) { |
844 | char buf[INET6_ADDRSTRLEN]; | |
845 | inet_ntop(AF_INET6, &adj->ll_ipv6_addrs[i], | |
846 | buf, sizeof(buf)); | |
847 | vty_out(vty, " %s\n", buf); | |
848 | } | |
849 | } | |
850 | if (adj->global_ipv6_count) { | |
851 | vty_out(vty, " Global IPv6 Address(es):\n"); | |
852 | for (unsigned int i = 0; i < adj->global_ipv6_count; | |
0c1bd758 CF |
853 | i++) { |
854 | char buf[INET6_ADDRSTRLEN]; | |
173f8887 | 855 | inet_ntop(AF_INET6, &adj->global_ipv6_addrs[i], |
0c1bd758 CF |
856 | buf, sizeof(buf)); |
857 | vty_out(vty, " %s\n", buf); | |
d62a17ae | 858 | } |
859 | } | |
ae59cfd7 PG |
860 | if (adj->circuit && adj->circuit->bfd_config.enabled) { |
861 | vty_out(vty, " BFD is %s%s\n", | |
862 | adj->bfd_session ? "active, status " | |
863 | : "configured", | |
864 | !adj->bfd_session | |
865 | ? "" | |
866 | : bfd_get_status_str(bfd_sess_status( | |
867 | adj->bfd_session))); | |
868 | } | |
26f6acaf RW |
869 | for (ALL_LIST_ELEMENTS_RO(adj->adj_sids, anode, sra)) { |
870 | const char *adj_type; | |
871 | const char *backup; | |
872 | uint32_t sid; | |
873 | ||
874 | switch (sra->adj->circuit->circ_type) { | |
875 | case CIRCUIT_T_BROADCAST: | |
876 | adj_type = "LAN Adjacency-SID"; | |
877 | sid = sra->u.ladj_sid->sid; | |
878 | break; | |
879 | case CIRCUIT_T_P2P: | |
880 | adj_type = "Adjacency-SID"; | |
881 | sid = sra->u.adj_sid->sid; | |
882 | break; | |
883 | default: | |
884 | continue; | |
885 | } | |
886 | backup = (sra->type == ISIS_SR_LAN_BACKUP) ? " (backup)" | |
887 | : ""; | |
888 | ||
889 | vty_out(vty, " %s %s%s: %u\n", | |
890 | (sra->nexthop.family == AF_INET) ? "IPv4" | |
891 | : "IPv6", | |
892 | adj_type, backup, sid); | |
893 | } | |
d62a17ae | 894 | vty_out(vty, "\n"); |
f390d2c7 | 895 | } |
d62a17ae | 896 | return; |
eb5d44eb | 897 | } |
898 | ||
d62a17ae | 899 | void isis_adj_build_neigh_list(struct list *adjdb, struct list *list) |
eb5d44eb | 900 | { |
d62a17ae | 901 | struct isis_adjacency *adj; |
902 | struct listnode *node; | |
903 | ||
904 | if (!list) { | |
1f46f33f | 905 | zlog_warn("%s: NULL list", __func__); |
d62a17ae | 906 | return; |
f390d2c7 | 907 | } |
908 | ||
d62a17ae | 909 | for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj)) { |
910 | if (!adj) { | |
1f46f33f | 911 | zlog_warn("%s: NULL adj", __func__); |
d62a17ae | 912 | return; |
913 | } | |
914 | ||
915 | if ((adj->adj_state == ISIS_ADJ_UP | |
916 | || adj->adj_state == ISIS_ADJ_INITIALIZING)) | |
917 | listnode_add(list, adj->snpa); | |
918 | } | |
919 | return; | |
eb5d44eb | 920 | } |
921 | ||
d62a17ae | 922 | void isis_adj_build_up_list(struct list *adjdb, struct list *list) |
eb5d44eb | 923 | { |
d62a17ae | 924 | struct isis_adjacency *adj; |
925 | struct listnode *node; | |
926 | ||
927 | if (adjdb == NULL) { | |
1f46f33f | 928 | zlog_warn("%s: adjacency DB is empty", __func__); |
d62a17ae | 929 | return; |
930 | } | |
931 | ||
932 | if (!list) { | |
1f46f33f | 933 | zlog_warn("%s: NULL list", __func__); |
d62a17ae | 934 | return; |
f390d2c7 | 935 | } |
936 | ||
d62a17ae | 937 | for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj)) { |
938 | if (!adj) { | |
1f46f33f | 939 | zlog_warn("%s: NULL adj", __func__); |
d62a17ae | 940 | return; |
941 | } | |
f390d2c7 | 942 | |
d62a17ae | 943 | if (adj->adj_state == ISIS_ADJ_UP) |
944 | listnode_add(list, adj); | |
945 | } | |
946 | ||
947 | return; | |
eb5d44eb | 948 | } |
d8fba7d9 | 949 | |
d62a17ae | 950 | int isis_adj_usage2levels(enum isis_adj_usage usage) |
d8fba7d9 | 951 | { |
d62a17ae | 952 | switch (usage) { |
953 | case ISIS_ADJ_LEVEL1: | |
954 | return IS_LEVEL_1; | |
955 | case ISIS_ADJ_LEVEL2: | |
956 | return IS_LEVEL_2; | |
957 | case ISIS_ADJ_LEVEL1AND2: | |
958 | return IS_LEVEL_1 | IS_LEVEL_2; | |
a348c945 DS |
959 | case ISIS_ADJ_NONE: |
960 | return 0; | |
d62a17ae | 961 | } |
a348c945 DS |
962 | |
963 | assert(!"Reached end of function where we are not expecting to"); | |
d8fba7d9 | 964 | } |