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7c551956 DS |
1 | /* |
2 | * Copyright (C) 2016 CumulusNetworks | |
3 | * Donald Sharp | |
4 | * | |
5 | * This file is part of Quagga | |
6 | * | |
7 | * Quagga is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * Quagga is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7c551956 DS |
20 | */ |
21 | #include <zebra.h> | |
22 | ||
23 | #include "log.h" | |
24 | #include "linklist.h" | |
f30c50b9 | 25 | #include "command.h" |
4a1ab8e4 | 26 | #include "memory.h" |
05737783 | 27 | #include "srcdest_table.h" |
7c551956 | 28 | |
82f97584 | 29 | #include "vty.h" |
7c551956 DS |
30 | #include "zebra/debug.h" |
31 | #include "zebra/zserv.h" | |
32 | #include "zebra/rib.h" | |
33 | #include "zebra/zebra_vrf.h" | |
5a8dfcd8 | 34 | #include "zebra/zebra_rnh.h" |
7c551956 | 35 | #include "zebra/router-id.h" |
4a1ab8e4 | 36 | #include "zebra/zebra_memory.h" |
28f6dde8 | 37 | #include "zebra/zebra_static.h" |
5a8dfcd8 | 38 | #include "zebra/interface.h" |
7758e3f3 | 39 | #include "zebra/zebra_mpls.h" |
13d60d35 | 40 | #include "zebra/zebra_vxlan.h" |
7c551956 DS |
41 | |
42 | extern struct zebra_t zebrad; | |
43 | ||
44 | /* VRF information update. */ | |
d62a17ae | 45 | static void zebra_vrf_add_update(struct zebra_vrf *zvrf) |
7c551956 | 46 | { |
d62a17ae | 47 | struct listnode *node, *nnode; |
48 | struct zserv *client; | |
7c551956 | 49 | |
d62a17ae | 50 | if (IS_ZEBRA_DEBUG_EVENT) |
51 | zlog_debug("MESSAGE: ZEBRA_VRF_ADD %s", zvrf_name(zvrf)); | |
7c551956 | 52 | |
d62a17ae | 53 | for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) |
54 | zsend_vrf_add(client, zvrf); | |
7c551956 DS |
55 | } |
56 | ||
d62a17ae | 57 | static void zebra_vrf_delete_update(struct zebra_vrf *zvrf) |
7c551956 | 58 | { |
d62a17ae | 59 | struct listnode *node, *nnode; |
60 | struct zserv *client; | |
7c551956 | 61 | |
d62a17ae | 62 | if (IS_ZEBRA_DEBUG_EVENT) |
63 | zlog_debug("MESSAGE: ZEBRA_VRF_DELETE %s", zvrf_name(zvrf)); | |
7c551956 | 64 | |
d62a17ae | 65 | for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) |
66 | zsend_vrf_delete(client, zvrf); | |
7c551956 DS |
67 | } |
68 | ||
d62a17ae | 69 | void zebra_vrf_update_all(struct zserv *client) |
7c551956 | 70 | { |
d62a17ae | 71 | struct vrf *vrf; |
7c551956 | 72 | |
a2addae8 | 73 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { |
d62a17ae | 74 | if (vrf->vrf_id) |
75 | zsend_vrf_add(client, vrf_info_lookup(vrf->vrf_id)); | |
76 | } | |
7c551956 DS |
77 | } |
78 | ||
79 | /* Callback upon creating a new VRF. */ | |
d62a17ae | 80 | static int zebra_vrf_new(struct vrf *vrf) |
7c551956 | 81 | { |
d62a17ae | 82 | struct zebra_vrf *zvrf; |
7c551956 | 83 | |
d62a17ae | 84 | if (IS_ZEBRA_DEBUG_EVENT) |
85 | zlog_info("ZVRF %s with id %u", vrf->name, vrf->vrf_id); | |
7c551956 | 86 | |
d62a17ae | 87 | zvrf = zebra_vrf_alloc(); |
88 | zvrf->zns = zebra_ns_lookup( | |
89 | NS_DEFAULT); /* Point to the global (single) NS */ | |
90 | router_id_init(zvrf); | |
91 | vrf->info = zvrf; | |
92 | zvrf->vrf = vrf; | |
34f8e6af | 93 | |
d62a17ae | 94 | return 0; |
7c551956 DS |
95 | } |
96 | ||
97 | /* Callback upon enabling a VRF. */ | |
d62a17ae | 98 | static int zebra_vrf_enable(struct vrf *vrf) |
7c551956 | 99 | { |
d62a17ae | 100 | struct zebra_vrf *zvrf = vrf->info; |
101 | struct route_table *stable; | |
102 | struct route_node *rn; | |
103 | struct static_route *si; | |
104 | struct interface *ifp; | |
105 | afi_t afi; | |
106 | safi_t safi; | |
107 | ||
108 | assert(zvrf); | |
109 | ||
110 | zebra_vrf_add_update(zvrf); | |
111 | ||
112 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
113 | for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++) { | |
114 | stable = zvrf->stable[afi][safi]; | |
115 | if (!stable) | |
116 | continue; | |
117 | ||
118 | for (rn = route_top(stable); rn; rn = route_next(rn)) | |
119 | for (si = rn->info; si; si = si->next) { | |
120 | si->vrf_id = vrf->vrf_id; | |
121 | if (si->ifindex) { | |
122 | ifp = if_lookup_by_name( | |
123 | si->ifname, si->vrf_id); | |
124 | if (ifp) | |
125 | si->ifindex = | |
126 | ifp->ifindex; | |
127 | else | |
128 | continue; | |
129 | } | |
130 | static_install_route(afi, safi, &rn->p, | |
131 | NULL, si); | |
132 | } | |
fb148af4 | 133 | } |
2414ffe5 | 134 | |
d62a17ae | 135 | return 0; |
7c551956 DS |
136 | } |
137 | ||
138 | /* Callback upon disabling a VRF. */ | |
d62a17ae | 139 | static int zebra_vrf_disable(struct vrf *vrf) |
7c551956 | 140 | { |
d62a17ae | 141 | struct zebra_vrf *zvrf = vrf->info; |
142 | struct route_table *stable; | |
143 | struct route_node *rn; | |
144 | struct static_route *si; | |
145 | afi_t afi; | |
146 | safi_t safi; | |
147 | ||
148 | if (IS_ZEBRA_DEBUG_KERNEL) | |
149 | zlog_debug("VRF %s id %u is now disabled.", zvrf_name(zvrf), | |
150 | zvrf_id(zvrf)); | |
151 | ||
152 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
153 | for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++) { | |
154 | stable = zvrf->stable[afi][safi]; | |
155 | if (!stable) | |
156 | continue; | |
157 | ||
158 | for (rn = route_top(stable); rn; rn = route_next(rn)) | |
159 | for (si = rn->info; si; si = si->next) | |
160 | static_uninstall_route( | |
161 | afi, safi, &rn->p, NULL, si); | |
162 | } | |
163 | ||
164 | return 0; | |
7c551956 DS |
165 | } |
166 | ||
d62a17ae | 167 | static int zebra_vrf_delete(struct vrf *vrf) |
7c551956 | 168 | { |
d62a17ae | 169 | struct zebra_vrf *zvrf = vrf->info; |
170 | struct route_table *table; | |
171 | u_int32_t table_id; | |
172 | afi_t afi; | |
173 | safi_t safi; | |
174 | unsigned i; | |
175 | ||
176 | assert(zvrf); | |
177 | ||
178 | zebra_vrf_delete_update(zvrf); | |
179 | ||
180 | /* uninstall everything */ | |
181 | if (!CHECK_FLAG(zvrf->flags, ZEBRA_VRF_RETAIN)) { | |
d62a17ae | 182 | struct interface *ifp; |
183 | ||
184 | for (afi = AFI_IP; afi <= AFI_IP6; afi++) { | |
185 | for (safi = SAFI_UNICAST; safi <= SAFI_MULTICAST; | |
186 | safi++) | |
187 | rib_close_table(zvrf->table[afi][safi]); | |
188 | ||
189 | if (vrf->vrf_id == VRF_DEFAULT) | |
190 | for (table_id = 0; | |
191 | table_id < ZEBRA_KERNEL_TABLE_MAX; | |
192 | table_id++) | |
193 | if (zvrf->other_table[afi][table_id]) | |
194 | rib_close_table( | |
195 | zvrf->other_table | |
196 | [afi] | |
197 | [table_id]); | |
198 | } | |
7c551956 | 199 | |
d62a17ae | 200 | /* Cleanup Vxlan table and update kernel */ |
201 | zebra_vxlan_close_tables(zvrf); | |
7c551956 | 202 | |
d62a17ae | 203 | zebra_mpls_close_tables(zvrf); |
6833ae01 | 204 | zebra_pw_exit(zvrf); |
5a8dfcd8 | 205 | |
451fda4f | 206 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 207 | if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(ifp); |
5a8dfcd8 RW |
208 | } |
209 | ||
d62a17ae | 210 | /* clean-up work queues */ |
211 | for (i = 0; i < MQ_SIZE; i++) { | |
212 | struct listnode *lnode, *nnode; | |
213 | struct route_node *rnode; | |
214 | rib_dest_t *dest; | |
215 | ||
216 | for (ALL_LIST_ELEMENTS(zebrad.mq->subq[i], lnode, nnode, | |
217 | rnode)) { | |
218 | dest = rib_dest_from_rnode(rnode); | |
219 | if (dest && rib_dest_vrf(dest) == zvrf) { | |
220 | route_unlock_node(rnode); | |
221 | list_delete_node(zebrad.mq->subq[i], lnode); | |
222 | zebrad.mq->size--; | |
223 | } | |
224 | } | |
5a8dfcd8 | 225 | } |
5a8dfcd8 | 226 | |
d62a17ae | 227 | /* release allocated memory */ |
228 | for (afi = AFI_IP; afi <= AFI_IP6; afi++) { | |
229 | void *table_info; | |
0f124559 | 230 | |
d62a17ae | 231 | for (safi = SAFI_UNICAST; safi <= SAFI_MULTICAST; safi++) { |
232 | table = zvrf->table[afi][safi]; | |
233 | table_info = table->info; | |
234 | route_table_finish(table); | |
235 | XFREE(MTYPE_RIB_TABLE_INFO, table_info); | |
236 | ||
237 | table = zvrf->stable[afi][safi]; | |
238 | route_table_finish(table); | |
239 | } | |
5a8dfcd8 | 240 | |
d62a17ae | 241 | for (table_id = 0; table_id < ZEBRA_KERNEL_TABLE_MAX; |
242 | table_id++) | |
243 | if (zvrf->other_table[afi][table_id]) { | |
244 | table = zvrf->other_table[afi][table_id]; | |
245 | table_info = table->info; | |
246 | route_table_finish(table); | |
247 | XFREE(MTYPE_RIB_TABLE_INFO, table_info); | |
248 | } | |
249 | ||
250 | route_table_finish(zvrf->rnh_table[afi]); | |
251 | route_table_finish(zvrf->import_check_table[afi]); | |
5a8dfcd8 | 252 | } |
d62a17ae | 253 | list_delete_all_node(zvrf->rid_all_sorted_list); |
254 | list_delete_all_node(zvrf->rid_lo_sorted_list); | |
255 | XFREE(MTYPE_ZEBRA_VRF, zvrf); | |
256 | vrf->info = NULL; | |
5a8dfcd8 | 257 | |
d62a17ae | 258 | return 0; |
7c551956 DS |
259 | } |
260 | ||
261 | /* Lookup the routing table in a VRF based on both VRF-Id and table-id. | |
262 | * NOTE: Table-id is relevant only in the Default VRF. | |
263 | */ | |
d62a17ae | 264 | struct route_table *zebra_vrf_table_with_table_id(afi_t afi, safi_t safi, |
265 | vrf_id_t vrf_id, | |
266 | u_int32_t table_id) | |
7c551956 | 267 | { |
d62a17ae | 268 | struct route_table *table = NULL; |
269 | ||
270 | if (afi >= AFI_MAX || safi >= SAFI_MAX) | |
271 | return NULL; | |
272 | ||
273 | if (vrf_id == VRF_DEFAULT) { | |
274 | if (table_id == RT_TABLE_MAIN | |
275 | || table_id == zebrad.rtm_table_default) | |
276 | table = zebra_vrf_table(afi, safi, vrf_id); | |
277 | else | |
278 | table = zebra_vrf_other_route_table(afi, table_id, | |
279 | vrf_id); | |
280 | } else | |
281 | table = zebra_vrf_table(afi, safi, vrf_id); | |
282 | ||
283 | return table; | |
7c551956 DS |
284 | } |
285 | ||
d62a17ae | 286 | static void zebra_rtable_node_cleanup(struct route_table *table, |
287 | struct route_node *node) | |
5a8dfcd8 | 288 | { |
d62a17ae | 289 | struct route_entry *re, *next; |
5a8dfcd8 | 290 | |
a2addae8 | 291 | RNODE_FOREACH_RE_SAFE (node, re, next) { |
407c87a6 DS |
292 | rib_unlink(node, re); |
293 | } | |
5a8dfcd8 | 294 | |
d62a17ae | 295 | if (node->info) |
296 | XFREE(MTYPE_RIB_DEST, node->info); | |
5a8dfcd8 RW |
297 | } |
298 | ||
d62a17ae | 299 | static void zebra_stable_node_cleanup(struct route_table *table, |
300 | struct route_node *node) | |
5a8dfcd8 | 301 | { |
d62a17ae | 302 | struct static_route *si, *next; |
303 | ||
304 | if (node->info) | |
305 | for (si = node->info; si; si = next) { | |
306 | next = si->next; | |
307 | XFREE(MTYPE_STATIC_ROUTE, si); | |
308 | } | |
5a8dfcd8 RW |
309 | } |
310 | ||
d62a17ae | 311 | static void zebra_rnhtable_node_cleanup(struct route_table *table, |
312 | struct route_node *node) | |
5a8dfcd8 | 313 | { |
d62a17ae | 314 | if (node->info) |
315 | zebra_free_rnh(node->info); | |
5a8dfcd8 RW |
316 | } |
317 | ||
7c551956 DS |
318 | /* |
319 | * Create a routing table for the specific AFI/SAFI in the given VRF. | |
320 | */ | |
d62a17ae | 321 | static void zebra_vrf_table_create(struct zebra_vrf *zvrf, afi_t afi, |
322 | safi_t safi) | |
7c551956 | 323 | { |
d62a17ae | 324 | rib_table_info_t *info; |
325 | struct route_table *table; | |
326 | ||
327 | assert(!zvrf->table[afi][safi]); | |
328 | ||
329 | if (afi == AFI_IP6) | |
330 | table = srcdest_table_init(); | |
331 | else | |
332 | table = route_table_init(); | |
333 | table->cleanup = zebra_rtable_node_cleanup; | |
334 | zvrf->table[afi][safi] = table; | |
335 | ||
336 | info = XCALLOC(MTYPE_RIB_TABLE_INFO, sizeof(*info)); | |
337 | info->zvrf = zvrf; | |
338 | info->afi = afi; | |
339 | info->safi = safi; | |
340 | table->info = info; | |
7c551956 DS |
341 | } |
342 | ||
343 | /* Allocate new zebra VRF. */ | |
d62a17ae | 344 | struct zebra_vrf *zebra_vrf_alloc(void) |
7c551956 | 345 | { |
d62a17ae | 346 | struct zebra_vrf *zvrf; |
347 | afi_t afi; | |
348 | safi_t safi; | |
349 | struct route_table *table; | |
350 | ||
351 | zvrf = XCALLOC(MTYPE_ZEBRA_VRF, sizeof(struct zebra_vrf)); | |
352 | ||
353 | for (afi = AFI_IP; afi <= AFI_IP6; afi++) { | |
354 | for (safi = SAFI_UNICAST; safi <= SAFI_MULTICAST; safi++) { | |
355 | zebra_vrf_table_create(zvrf, afi, safi); | |
356 | if (afi == AFI_IP6) | |
357 | table = srcdest_table_init(); | |
358 | else | |
359 | table = route_table_init(); | |
360 | table->cleanup = zebra_stable_node_cleanup; | |
361 | zvrf->stable[afi][safi] = table; | |
362 | } | |
363 | ||
364 | table = route_table_init(); | |
365 | table->cleanup = zebra_rnhtable_node_cleanup; | |
366 | zvrf->rnh_table[afi] = table; | |
367 | ||
368 | table = route_table_init(); | |
369 | table->cleanup = zebra_rnhtable_node_cleanup; | |
370 | zvrf->import_check_table[afi] = table; | |
371 | } | |
372 | ||
373 | zebra_vxlan_init_tables(zvrf); | |
374 | zebra_mpls_init_tables(zvrf); | |
6833ae01 | 375 | zebra_pw_init(zvrf); |
d62a17ae | 376 | |
377 | return zvrf; | |
7c551956 DS |
378 | } |
379 | ||
380 | /* Lookup VRF by identifier. */ | |
d62a17ae | 381 | struct zebra_vrf *zebra_vrf_lookup_by_id(vrf_id_t vrf_id) |
7c551956 | 382 | { |
d62a17ae | 383 | return vrf_info_lookup(vrf_id); |
7c551956 DS |
384 | } |
385 | ||
51bdc5f8 | 386 | /* Lookup VRF by name. */ |
d62a17ae | 387 | struct zebra_vrf *zebra_vrf_lookup_by_name(const char *name) |
871d39b3 | 388 | { |
d62a17ae | 389 | struct vrf *vrf; |
871d39b3 | 390 | |
d62a17ae | 391 | if (!name) |
392 | name = VRF_DEFAULT_NAME; | |
a3d21ef3 | 393 | |
d62a17ae | 394 | vrf = vrf_lookup_by_name(name); |
395 | if (vrf) | |
396 | return ((struct zebra_vrf *)vrf->info); | |
51bdc5f8 | 397 | |
d62a17ae | 398 | return NULL; |
871d39b3 DS |
399 | } |
400 | ||
7c551956 | 401 | /* Lookup the routing table in an enabled VRF. */ |
d62a17ae | 402 | struct route_table *zebra_vrf_table(afi_t afi, safi_t safi, vrf_id_t vrf_id) |
7c551956 | 403 | { |
d62a17ae | 404 | struct zebra_vrf *zvrf = vrf_info_lookup(vrf_id); |
7c551956 | 405 | |
d62a17ae | 406 | if (!zvrf) |
407 | return NULL; | |
7c551956 | 408 | |
d62a17ae | 409 | if (afi >= AFI_MAX || safi >= SAFI_MAX) |
410 | return NULL; | |
7c551956 | 411 | |
d62a17ae | 412 | return zvrf->table[afi][safi]; |
7c551956 DS |
413 | } |
414 | ||
415 | /* Lookup the static routing table in a VRF. */ | |
d62a17ae | 416 | struct route_table *zebra_vrf_static_table(afi_t afi, safi_t safi, |
417 | struct zebra_vrf *zvrf) | |
7c551956 | 418 | { |
d62a17ae | 419 | if (!zvrf) |
420 | return NULL; | |
7c551956 | 421 | |
d62a17ae | 422 | if (afi >= AFI_MAX || safi >= SAFI_MAX) |
423 | return NULL; | |
7c551956 | 424 | |
d62a17ae | 425 | return zvrf->stable[afi][safi]; |
7c551956 DS |
426 | } |
427 | ||
d62a17ae | 428 | struct route_table *zebra_vrf_other_route_table(afi_t afi, u_int32_t table_id, |
429 | vrf_id_t vrf_id) | |
7c551956 | 430 | { |
d62a17ae | 431 | struct zebra_vrf *zvrf; |
432 | rib_table_info_t *info; | |
433 | struct route_table *table; | |
434 | ||
435 | zvrf = vrf_info_lookup(vrf_id); | |
436 | if (!zvrf) | |
437 | return NULL; | |
438 | ||
439 | if (afi >= AFI_MAX) | |
440 | return NULL; | |
441 | ||
442 | if (table_id >= ZEBRA_KERNEL_TABLE_MAX) | |
443 | return NULL; | |
444 | ||
445 | if ((vrf_id == VRF_DEFAULT) && (table_id != RT_TABLE_MAIN) | |
446 | && (table_id != zebrad.rtm_table_default)) { | |
447 | if (zvrf->other_table[afi][table_id] == NULL) { | |
448 | table = (afi == AFI_IP6) ? srcdest_table_init() | |
449 | : route_table_init(); | |
450 | info = XCALLOC(MTYPE_RIB_TABLE_INFO, sizeof(*info)); | |
451 | info->zvrf = zvrf; | |
452 | info->afi = afi; | |
453 | info->safi = SAFI_UNICAST; | |
454 | table->info = info; | |
455 | zvrf->other_table[afi][table_id] = table; | |
456 | } | |
457 | ||
458 | return (zvrf->other_table[afi][table_id]); | |
459 | } | |
460 | ||
461 | return zvrf->table[afi][SAFI_UNICAST]; | |
7c551956 DS |
462 | } |
463 | ||
d62a17ae | 464 | static int vrf_config_write(struct vty *vty) |
f30c50b9 | 465 | { |
d62a17ae | 466 | struct vrf *vrf; |
467 | struct zebra_vrf *zvrf; | |
468 | ||
a2addae8 | 469 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
d62a17ae | 470 | zvrf = vrf->info; |
1e9f448f DS |
471 | |
472 | if (!zvrf) | |
473 | continue; | |
474 | ||
0af35d90 | 475 | if (strcmp(zvrf_name(zvrf), VRF_DEFAULT_NAME)) { |
d62a17ae | 476 | vty_out(vty, "vrf %s\n", zvrf_name(zvrf)); |
477 | vty_out(vty, "!\n"); | |
478 | } | |
479 | } | |
480 | return 0; | |
f30c50b9 RW |
481 | } |
482 | ||
7c551956 | 483 | /* Zebra VRF initialization. */ |
d62a17ae | 484 | void zebra_vrf_init(void) |
7c551956 | 485 | { |
d62a17ae | 486 | vrf_init(zebra_vrf_new, zebra_vrf_enable, zebra_vrf_disable, |
487 | zebra_vrf_delete); | |
7c551956 | 488 | |
d62a17ae | 489 | vrf_cmd_init(vrf_config_write); |
7c551956 | 490 | } |