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718e3744 | 1 | /* Routing Information Base. |
2 | * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "prefix.h" | |
25 | #include "table.h" | |
26 | #include "memory.h" | |
27 | #include "str.h" | |
28 | #include "command.h" | |
29 | #include "if.h" | |
30 | #include "log.h" | |
31 | #include "sockunion.h" | |
4d38fdb4 | 32 | #include "linklist.h" |
33 | #include "thread.h" | |
34 | #include "workqueue.h" | |
7514fb77 PJ |
35 | #include "prefix.h" |
36 | #include "routemap.h" | |
fb018d25 | 37 | #include "nexthop.h" |
b72ede27 | 38 | #include "vrf.h" |
718e3744 | 39 | |
40 | #include "zebra/rib.h" | |
41 | #include "zebra/rt.h" | |
42 | #include "zebra/zserv.h" | |
43 | #include "zebra/redistribute.h" | |
44 | #include "zebra/debug.h" | |
5adc2528 | 45 | #include "zebra/zebra_fpm.h" |
fb018d25 | 46 | #include "zebra/zebra_rnh.h" |
88177fe3 | 47 | #include "zebra/interface.h" |
d44ca835 | 48 | #include "zebra/connected.h" |
718e3744 | 49 | |
6baf7bb8 DS |
50 | /* Should we allow non Quagga processes to delete our routes */ |
51 | extern int allow_delete; | |
52 | ||
457eb9af PJ |
53 | /* Hold time for RIB process, should be very minimal. |
54 | * it is useful to able to set it otherwise for testing, hence exported | |
55 | * as global here for test-rig code. | |
56 | */ | |
57 | int rib_process_hold_time = 10; | |
58 | ||
718e3744 | 59 | /* Each route type's string and default distance value. */ |
d145bc00 | 60 | static const struct |
718e3744 | 61 | { |
62 | int key; | |
63 | int distance; | |
5734509c | 64 | } route_info[ZEBRA_ROUTE_MAX] = |
718e3744 | 65 | { |
5734509c PJ |
66 | [ZEBRA_ROUTE_SYSTEM] = {ZEBRA_ROUTE_SYSTEM, 0}, |
67 | [ZEBRA_ROUTE_KERNEL] = {ZEBRA_ROUTE_KERNEL, 0}, | |
68 | [ZEBRA_ROUTE_CONNECT] = {ZEBRA_ROUTE_CONNECT, 0}, | |
69 | [ZEBRA_ROUTE_STATIC] = {ZEBRA_ROUTE_STATIC, 1}, | |
70 | [ZEBRA_ROUTE_RIP] = {ZEBRA_ROUTE_RIP, 120}, | |
71 | [ZEBRA_ROUTE_RIPNG] = {ZEBRA_ROUTE_RIPNG, 120}, | |
72 | [ZEBRA_ROUTE_OSPF] = {ZEBRA_ROUTE_OSPF, 110}, | |
73 | [ZEBRA_ROUTE_OSPF6] = {ZEBRA_ROUTE_OSPF6, 110}, | |
74 | [ZEBRA_ROUTE_ISIS] = {ZEBRA_ROUTE_ISIS, 115}, | |
75 | [ZEBRA_ROUTE_BGP] = {ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */}, | |
7052f228 | 76 | /* no entry/default: 150 */ |
718e3744 | 77 | }; |
6b0655a2 | 78 | |
7a4bb9c5 DS |
79 | int |
80 | is_zebra_valid_kernel_table(u_int32_t table_id) | |
81 | { | |
82 | if ((table_id > ZEBRA_KERNEL_TABLE_MAX) || | |
83 | (table_id == RT_TABLE_UNSPEC) || | |
84 | (table_id == RT_TABLE_LOCAL) || | |
85 | (table_id == RT_TABLE_COMPAT)) | |
86 | return 0; | |
87 | else | |
88 | return 1; | |
89 | } | |
90 | ||
91 | int | |
92 | is_zebra_main_routing_table(u_int32_t table_id) | |
93 | { | |
94 | if ((table_id == RT_TABLE_MAIN) || (table_id == zebrad.rtm_table_default)) | |
95 | return 1; | |
96 | return 0; | |
97 | } | |
98 | ||
0aabccc0 DD |
99 | int |
100 | zebra_check_addr (struct prefix *p) | |
101 | { | |
102 | if (p->family == AF_INET) | |
103 | { | |
104 | u_int32_t addr; | |
105 | ||
106 | addr = p->u.prefix4.s_addr; | |
107 | addr = ntohl (addr); | |
108 | ||
109 | if (IPV4_NET127 (addr) | |
110 | || IN_CLASSD (addr) | |
111 | || IPV4_LINKLOCAL(addr)) | |
112 | return 0; | |
113 | } | |
0aabccc0 DD |
114 | if (p->family == AF_INET6) |
115 | { | |
116 | if (IN6_IS_ADDR_LOOPBACK (&p->u.prefix6)) | |
117 | return 0; | |
118 | if (IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
119 | return 0; | |
120 | } | |
0aabccc0 DD |
121 | return 1; |
122 | } | |
123 | ||
fa713d9e | 124 | /* Add nexthop to the end of a rib node's nexthop list */ |
fb018d25 | 125 | void |
a399694f | 126 | rib_nexthop_add (struct rib *rib, struct nexthop *nexthop) |
fa713d9e | 127 | { |
a399694f | 128 | nexthop_add(&rib->nexthop, nexthop); |
718e3744 | 129 | rib->nexthop_num++; |
130 | } | |
131 | ||
6e26278c | 132 | |
6e26278c DS |
133 | |
134 | /** | |
135 | * copy_nexthop - copy a nexthop to the rib structure. | |
136 | */ | |
137 | void | |
a399694f | 138 | rib_copy_nexthops (struct rib *rib, struct nexthop *nh) |
6e26278c DS |
139 | { |
140 | struct nexthop *nexthop; | |
141 | ||
142 | nexthop = nexthop_new(); | |
143 | nexthop->flags = nh->flags; | |
144 | nexthop->type = nh->type; | |
145 | nexthop->ifindex = nh->ifindex; | |
6e26278c DS |
146 | memcpy(&(nexthop->gate), &(nh->gate), sizeof(union g_addr)); |
147 | memcpy(&(nexthop->src), &(nh->src), sizeof(union g_addr)); | |
a399694f | 148 | rib_nexthop_add(rib, nexthop); |
6e26278c | 149 | if (CHECK_FLAG(nh->flags, NEXTHOP_FLAG_RECURSIVE)) |
a399694f | 150 | copy_nexthops(&nexthop->resolved, nh->resolved); |
6e26278c DS |
151 | } |
152 | ||
718e3744 | 153 | /* Delete specified nexthop from the list. */ |
a1ac18c4 | 154 | static void |
a399694f | 155 | rib_nexthop_delete (struct rib *rib, struct nexthop *nexthop) |
718e3744 | 156 | { |
157 | if (nexthop->next) | |
158 | nexthop->next->prev = nexthop->prev; | |
159 | if (nexthop->prev) | |
160 | nexthop->prev->next = nexthop->next; | |
161 | else | |
162 | rib->nexthop = nexthop->next; | |
163 | rib->nexthop_num--; | |
164 | } | |
165 | ||
fa713d9e | 166 | |
fa713d9e | 167 | |
718e3744 | 168 | struct nexthop * |
a399694f | 169 | rib_nexthop_ifindex_add (struct rib *rib, unsigned int ifindex) |
718e3744 | 170 | { |
171 | struct nexthop *nexthop; | |
172 | ||
a399694f | 173 | nexthop = nexthop_new(); |
718e3744 | 174 | nexthop->type = NEXTHOP_TYPE_IFINDEX; |
175 | nexthop->ifindex = ifindex; | |
176 | ||
a399694f | 177 | rib_nexthop_add (rib, nexthop); |
718e3744 | 178 | |
179 | return nexthop; | |
180 | } | |
181 | ||
718e3744 | 182 | struct nexthop * |
a399694f | 183 | rib_nexthop_ipv4_add (struct rib *rib, struct in_addr *ipv4, struct in_addr *src) |
718e3744 | 184 | { |
185 | struct nexthop *nexthop; | |
186 | ||
a399694f | 187 | nexthop = nexthop_new(); |
718e3744 | 188 | nexthop->type = NEXTHOP_TYPE_IPV4; |
189 | nexthop->gate.ipv4 = *ipv4; | |
7514fb77 PJ |
190 | if (src) |
191 | nexthop->src.ipv4 = *src; | |
718e3744 | 192 | |
a399694f | 193 | rib_nexthop_add (rib, nexthop); |
718e3744 | 194 | |
195 | return nexthop; | |
196 | } | |
197 | ||
26e2ae36 | 198 | struct nexthop * |
a399694f DS |
199 | rib_nexthop_ipv4_ifindex_add (struct rib *rib, struct in_addr *ipv4, |
200 | struct in_addr *src, unsigned int ifindex) | |
718e3744 | 201 | { |
202 | struct nexthop *nexthop; | |
d44ca835 | 203 | struct interface *ifp; |
718e3744 | 204 | |
a399694f | 205 | nexthop = nexthop_new(); |
718e3744 | 206 | nexthop->type = NEXTHOP_TYPE_IPV4_IFINDEX; |
207 | nexthop->gate.ipv4 = *ipv4; | |
7514fb77 PJ |
208 | if (src) |
209 | nexthop->src.ipv4 = *src; | |
718e3744 | 210 | nexthop->ifindex = ifindex; |
d44ca835 | 211 | ifp = if_lookup_by_index (nexthop->ifindex); |
12f6fb97 DS |
212 | /*Pending: need to think if null ifp here is ok during bootup? |
213 | There was a crash because ifp here was coming to be NULL */ | |
214 | if (ifp) | |
d44ca835 DS |
215 | if (connected_is_unnumbered(ifp)) { |
216 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK); | |
217 | } | |
718e3744 | 218 | |
a399694f | 219 | rib_nexthop_add (rib, nexthop); |
718e3744 | 220 | |
221 | return nexthop; | |
222 | } | |
223 | ||
718e3744 | 224 | struct nexthop * |
a399694f | 225 | rib_nexthop_ipv6_add (struct rib *rib, struct in6_addr *ipv6) |
718e3744 | 226 | { |
227 | struct nexthop *nexthop; | |
228 | ||
a399694f | 229 | nexthop = nexthop_new(); |
718e3744 | 230 | nexthop->type = NEXTHOP_TYPE_IPV6; |
231 | nexthop->gate.ipv6 = *ipv6; | |
232 | ||
a399694f | 233 | rib_nexthop_add (rib, nexthop); |
718e3744 | 234 | |
235 | return nexthop; | |
236 | } | |
237 | ||
41fc2714 | 238 | struct nexthop * |
a399694f DS |
239 | rib_nexthop_ipv6_ifindex_add (struct rib *rib, struct in6_addr *ipv6, |
240 | unsigned int ifindex) | |
718e3744 | 241 | { |
242 | struct nexthop *nexthop; | |
243 | ||
393deb9b | 244 | nexthop = XCALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
718e3744 | 245 | nexthop->type = NEXTHOP_TYPE_IPV6_IFINDEX; |
246 | nexthop->gate.ipv6 = *ipv6; | |
247 | nexthop->ifindex = ifindex; | |
248 | ||
a399694f | 249 | rib_nexthop_add (rib, nexthop); |
718e3744 | 250 | |
251 | return nexthop; | |
252 | } | |
718e3744 | 253 | |
595db7f1 | 254 | struct nexthop * |
a399694f | 255 | rib_nexthop_blackhole_add (struct rib *rib) |
595db7f1 | 256 | { |
257 | struct nexthop *nexthop; | |
258 | ||
a399694f | 259 | nexthop = nexthop_new(); |
595db7f1 | 260 | nexthop->type = NEXTHOP_TYPE_BLACKHOLE; |
261 | SET_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE); | |
262 | ||
a399694f | 263 | rib_nexthop_add (rib, nexthop); |
595db7f1 | 264 | |
265 | return nexthop; | |
266 | } | |
267 | ||
fa713d9e CF |
268 | /* This method checks whether a recursive nexthop has at |
269 | * least one resolved nexthop in the fib. | |
270 | */ | |
271 | int | |
272 | nexthop_has_fib_child(struct nexthop *nexthop) | |
273 | { | |
274 | struct nexthop *nh; | |
275 | ||
276 | if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
277 | return 0; | |
278 | ||
279 | for (nh = nexthop->resolved; nh; nh = nh->next) | |
280 | if (CHECK_FLAG (nh->flags, NEXTHOP_FLAG_FIB)) | |
281 | return 1; | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
718e3744 | 286 | /* If force flag is not set, do not modify falgs at all for uninstall |
287 | the route from FIB. */ | |
a1ac18c4 | 288 | static int |
718e3744 | 289 | nexthop_active_ipv4 (struct rib *rib, struct nexthop *nexthop, int set, |
290 | struct route_node *top) | |
291 | { | |
292 | struct prefix_ipv4 p; | |
293 | struct route_table *table; | |
294 | struct route_node *rn; | |
295 | struct rib *match; | |
fa713d9e | 296 | int resolved; |
6e26278c | 297 | struct nexthop *newhop, *tnewhop; |
fa713d9e | 298 | struct nexthop *resolved_hop; |
6e26278c | 299 | int recursing = 0; |
c8a1cb5c | 300 | struct interface *ifp; |
718e3744 | 301 | |
302 | if (nexthop->type == NEXTHOP_TYPE_IPV4) | |
303 | nexthop->ifindex = 0; | |
304 | ||
305 | if (set) | |
fa713d9e CF |
306 | { |
307 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
d82ae0de | 308 | zebra_deregister_rnh_static_nexthops(rib->vrf_id, nexthop->resolved, top); |
a399694f | 309 | nexthops_free(nexthop->resolved); |
fa713d9e CF |
310 | nexthop->resolved = NULL; |
311 | } | |
718e3744 | 312 | |
6e26278c DS |
313 | /* Skip nexthops that have been filtered out due to route-map */ |
314 | /* The nexthops are specific to this route and so the same */ | |
315 | /* nexthop for a different route may not have this flag set */ | |
316 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED)) | |
317 | return 0; | |
318 | ||
d44ca835 DS |
319 | /* |
320 | * Check to see if we should trust the passed in information | |
321 | * for UNNUMBERED interfaces as that we won't find the GW | |
322 | * address in the routing table. | |
c8a1cb5c DS |
323 | */ |
324 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK)) | |
325 | { | |
326 | ifp = if_lookup_by_index (nexthop->ifindex); | |
d44ca835 DS |
327 | if (ifp && connected_is_unnumbered(ifp)) |
328 | { | |
329 | if (if_is_operative(ifp)) | |
330 | return 1; | |
331 | else | |
332 | return 0; | |
333 | } | |
c8a1cb5c DS |
334 | else |
335 | return 0; | |
336 | } | |
337 | ||
718e3744 | 338 | /* Make lookup prefix. */ |
339 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
340 | p.family = AF_INET; | |
341 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
342 | p.prefix = nexthop->gate.ipv4; | |
343 | ||
344 | /* Lookup table. */ | |
78104b9b | 345 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, rib->vrf_id); |
718e3744 | 346 | if (! table) |
347 | return 0; | |
348 | ||
349 | rn = route_node_match (table, (struct prefix *) &p); | |
350 | while (rn) | |
351 | { | |
352 | route_unlock_node (rn); | |
353 | ||
a50c107e | 354 | /* If lookup self prefix return immediately. */ |
718e3744 | 355 | if (rn == top) |
356 | return 0; | |
357 | ||
358 | /* Pick up selected route. */ | |
18ff3edd DS |
359 | /* However, do not resolve over default route unless explicitly allowed. */ |
360 | if (is_default_prefix (&rn->p) && | |
361 | !nh_resolve_via_default (p.family)) | |
362 | return 0; | |
363 | ||
9fd92e3c | 364 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
365 | { |
366 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
367 | continue; | |
368 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
369 | break; | |
370 | } | |
718e3744 | 371 | |
372 | /* If there is no selected route or matched route is EGP, go up | |
373 | tree. */ | |
6e26278c | 374 | if (! match) |
718e3744 | 375 | { |
376 | do { | |
377 | rn = rn->parent; | |
378 | } while (rn && rn->info == NULL); | |
379 | if (rn) | |
380 | route_lock_node (rn); | |
381 | } | |
382 | else | |
383 | { | |
48a53dc7 CF |
384 | /* If the longest prefix match for the nexthop yields |
385 | * a blackhole, mark it as inactive. */ | |
386 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_BLACKHOLE) | |
387 | || CHECK_FLAG (match->flags, ZEBRA_FLAG_REJECT)) | |
388 | return 0; | |
389 | ||
718e3744 | 390 | if (match->type == ZEBRA_ROUTE_CONNECT) |
391 | { | |
392 | /* Directly point connected route. */ | |
393 | newhop = match->nexthop; | |
394 | if (newhop && nexthop->type == NEXTHOP_TYPE_IPV4) | |
395 | nexthop->ifindex = newhop->ifindex; | |
396 | ||
397 | return 1; | |
398 | } | |
399 | else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL)) | |
400 | { | |
fa713d9e | 401 | resolved = 0; |
718e3744 | 402 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
403 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB) | |
404 | && ! CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
405 | { | |
406 | if (set) | |
407 | { | |
408 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
6e26278c | 409 | SET_FLAG(rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); |
fa713d9e CF |
410 | |
411 | resolved_hop = XCALLOC(MTYPE_NEXTHOP, sizeof (struct nexthop)); | |
412 | SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE); | |
c3e6b595 CF |
413 | /* If the resolving route specifies a gateway, use it */ |
414 | if (newhop->type == NEXTHOP_TYPE_IPV4 | |
3ee39b5b | 415 | || newhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) |
c3e6b595 CF |
416 | { |
417 | resolved_hop->type = newhop->type; | |
418 | resolved_hop->gate.ipv4 = newhop->gate.ipv4; | |
419 | ||
420 | if (newhop->ifindex) | |
421 | { | |
422 | resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
423 | resolved_hop->ifindex = newhop->ifindex; | |
f44f6668 DS |
424 | if (newhop->flags & NEXTHOP_FLAG_ONLINK) |
425 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
c3e6b595 CF |
426 | } |
427 | } | |
428 | ||
429 | /* If the resolving route is an interface route, | |
430 | * it means the gateway we are looking up is connected | |
431 | * to that interface. (The actual network is _not_ onlink). | |
432 | * Therefore, the resolved route should have the original | |
433 | * gateway as nexthop as it is directly connected. | |
434 | * | |
435 | * On Linux, we have to set the onlink netlink flag because | |
436 | * otherwise, the kernel won't accept the route. */ | |
3ee39b5b | 437 | if (newhop->type == NEXTHOP_TYPE_IFINDEX) |
c3e6b595 CF |
438 | { |
439 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
440 | resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
441 | resolved_hop->gate.ipv4 = nexthop->gate.ipv4; | |
442 | resolved_hop->ifindex = newhop->ifindex; | |
443 | } | |
fa713d9e | 444 | |
a399694f | 445 | nexthop_add(&nexthop->resolved, resolved_hop); |
6e26278c DS |
446 | } |
447 | resolved = 1; | |
448 | } | |
449 | return resolved; | |
450 | } | |
451 | else if (rib->type == ZEBRA_ROUTE_STATIC) | |
452 | { | |
453 | resolved = 0; | |
454 | for (ALL_NEXTHOPS_RO(match->nexthop, newhop, tnewhop, recursing)) | |
455 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) | |
456 | { | |
457 | if (set) | |
458 | { | |
459 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
460 | ||
461 | resolved_hop = XCALLOC(MTYPE_NEXTHOP, sizeof (struct nexthop)); | |
462 | SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE); | |
463 | /* If the resolving route specifies a gateway, use it */ | |
464 | if (newhop->type == NEXTHOP_TYPE_IPV4 | |
3ee39b5b | 465 | || newhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) |
6e26278c DS |
466 | { |
467 | resolved_hop->type = newhop->type; | |
468 | resolved_hop->gate.ipv4 = newhop->gate.ipv4; | |
469 | ||
470 | if (newhop->ifindex) | |
471 | { | |
472 | resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
473 | resolved_hop->ifindex = newhop->ifindex; | |
f44f6668 DS |
474 | if (newhop->flags & NEXTHOP_FLAG_ONLINK) |
475 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
6e26278c DS |
476 | } |
477 | } | |
478 | ||
479 | /* If the resolving route is an interface route, | |
480 | * it means the gateway we are looking up is connected | |
481 | * to that interface. (The actual network is _not_ onlink). | |
482 | * Therefore, the resolved route should have the original | |
483 | * gateway as nexthop as it is directly connected. | |
484 | * | |
485 | * On Linux, we have to set the onlink netlink flag because | |
486 | * otherwise, the kernel won't accept the route. | |
487 | */ | |
3ee39b5b | 488 | if (newhop->type == NEXTHOP_TYPE_IFINDEX) |
6e26278c DS |
489 | { |
490 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
491 | resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
492 | resolved_hop->gate.ipv4 = nexthop->gate.ipv4; | |
493 | resolved_hop->ifindex = newhop->ifindex; | |
494 | } | |
495 | ||
a399694f | 496 | nexthop_add(&nexthop->resolved, resolved_hop); |
718e3744 | 497 | } |
fa713d9e | 498 | resolved = 1; |
718e3744 | 499 | } |
fa713d9e | 500 | return resolved; |
718e3744 | 501 | } |
502 | else | |
503 | { | |
504 | return 0; | |
505 | } | |
506 | } | |
507 | } | |
508 | return 0; | |
509 | } | |
510 | ||
718e3744 | 511 | /* If force flag is not set, do not modify falgs at all for uninstall |
512 | the route from FIB. */ | |
a1ac18c4 | 513 | static int |
718e3744 | 514 | nexthop_active_ipv6 (struct rib *rib, struct nexthop *nexthop, int set, |
515 | struct route_node *top) | |
516 | { | |
517 | struct prefix_ipv6 p; | |
518 | struct route_table *table; | |
519 | struct route_node *rn; | |
520 | struct rib *match; | |
fa713d9e | 521 | int resolved; |
6e26278c DS |
522 | struct nexthop *newhop, *tnewhop; |
523 | int recursing = 0; | |
fa713d9e | 524 | struct nexthop *resolved_hop; |
718e3744 | 525 | |
526 | if (nexthop->type == NEXTHOP_TYPE_IPV6) | |
527 | nexthop->ifindex = 0; | |
528 | ||
529 | if (set) | |
fa713d9e CF |
530 | { |
531 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
d82ae0de | 532 | zebra_deregister_rnh_static_nexthops (rib->vrf_id, nexthop->resolved, top); |
a399694f | 533 | nexthops_free(nexthop->resolved); |
fa713d9e CF |
534 | nexthop->resolved = NULL; |
535 | } | |
718e3744 | 536 | |
6e26278c DS |
537 | /* Skip nexthops that have been filtered out due to route-map */ |
538 | /* The nexthops are specific to this route and so the same */ | |
539 | /* nexthop for a different route may not have this flag set */ | |
540 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED)) | |
541 | return 0; | |
542 | ||
718e3744 | 543 | /* Make lookup prefix. */ |
544 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
545 | p.family = AF_INET6; | |
546 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
547 | p.prefix = nexthop->gate.ipv6; | |
548 | ||
549 | /* Lookup table. */ | |
78104b9b | 550 | table = zebra_vrf_table (AFI_IP6, SAFI_UNICAST, rib->vrf_id); |
718e3744 | 551 | if (! table) |
552 | return 0; | |
553 | ||
554 | rn = route_node_match (table, (struct prefix *) &p); | |
555 | while (rn) | |
556 | { | |
557 | route_unlock_node (rn); | |
558 | ||
a50c107e | 559 | /* If lookup self prefix return immediately. */ |
718e3744 | 560 | if (rn == top) |
561 | return 0; | |
562 | ||
563 | /* Pick up selected route. */ | |
18ff3edd DS |
564 | /* However, do not resolve over default route unless explicitly allowed. */ |
565 | if (is_default_prefix (&rn->p) && | |
566 | !nh_resolve_via_default (p.family)) | |
567 | return 0; | |
568 | ||
9fd92e3c | 569 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
570 | { |
571 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
572 | continue; | |
573 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
574 | break; | |
575 | } | |
718e3744 | 576 | |
577 | /* If there is no selected route or matched route is EGP, go up | |
578 | tree. */ | |
6e26278c | 579 | if (! match) |
718e3744 | 580 | { |
581 | do { | |
582 | rn = rn->parent; | |
583 | } while (rn && rn->info == NULL); | |
584 | if (rn) | |
585 | route_lock_node (rn); | |
586 | } | |
587 | else | |
588 | { | |
48a53dc7 CF |
589 | /* If the longest prefix match for the nexthop yields |
590 | * a blackhole, mark it as inactive. */ | |
591 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_BLACKHOLE) | |
592 | || CHECK_FLAG (match->flags, ZEBRA_FLAG_REJECT)) | |
593 | return 0; | |
594 | ||
718e3744 | 595 | if (match->type == ZEBRA_ROUTE_CONNECT) |
596 | { | |
597 | /* Directly point connected route. */ | |
598 | newhop = match->nexthop; | |
599 | ||
600 | if (newhop && nexthop->type == NEXTHOP_TYPE_IPV6) | |
601 | nexthop->ifindex = newhop->ifindex; | |
602 | ||
603 | return 1; | |
604 | } | |
605 | else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL)) | |
606 | { | |
fa713d9e | 607 | resolved = 0; |
718e3744 | 608 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
609 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB) | |
610 | && ! CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
6e26278c DS |
611 | { |
612 | if (set) | |
613 | { | |
614 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
615 | SET_FLAG(rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); | |
616 | ||
617 | resolved_hop = XCALLOC(MTYPE_NEXTHOP, sizeof (struct nexthop)); | |
618 | SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE); | |
619 | /* See nexthop_active_ipv4 for a description how the | |
620 | * resolved nexthop is constructed. */ | |
621 | if (newhop->type == NEXTHOP_TYPE_IPV6 | |
3ee39b5b | 622 | || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) |
6e26278c DS |
623 | { |
624 | resolved_hop->type = newhop->type; | |
625 | resolved_hop->gate.ipv6 = newhop->gate.ipv6; | |
626 | ||
627 | if (newhop->ifindex) | |
628 | { | |
629 | resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
630 | resolved_hop->ifindex = newhop->ifindex; | |
631 | } | |
632 | } | |
633 | ||
3ee39b5b | 634 | if (newhop->type == NEXTHOP_TYPE_IFINDEX) |
6e26278c DS |
635 | { |
636 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
637 | resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
638 | resolved_hop->gate.ipv6 = nexthop->gate.ipv6; | |
639 | resolved_hop->ifindex = newhop->ifindex; | |
640 | } | |
641 | ||
a399694f | 642 | nexthop_add(&nexthop->resolved, resolved_hop); |
6e26278c DS |
643 | } |
644 | resolved = 1; | |
645 | } | |
646 | return resolved; | |
647 | } | |
648 | else if (rib->type == ZEBRA_ROUTE_STATIC) | |
649 | { | |
650 | resolved = 0; | |
651 | for (ALL_NEXTHOPS_RO(match->nexthop, newhop, tnewhop, recursing)) | |
652 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) | |
718e3744 | 653 | { |
654 | if (set) | |
655 | { | |
656 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); | |
fa713d9e CF |
657 | |
658 | resolved_hop = XCALLOC(MTYPE_NEXTHOP, sizeof (struct nexthop)); | |
659 | SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE); | |
c3e6b595 CF |
660 | /* See nexthop_active_ipv4 for a description how the |
661 | * resolved nexthop is constructed. */ | |
718e3744 | 662 | if (newhop->type == NEXTHOP_TYPE_IPV6 |
3ee39b5b | 663 | || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) |
c3e6b595 CF |
664 | { |
665 | resolved_hop->type = newhop->type; | |
666 | resolved_hop->gate.ipv6 = newhop->gate.ipv6; | |
667 | ||
668 | if (newhop->ifindex) | |
669 | { | |
670 | resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
671 | resolved_hop->ifindex = newhop->ifindex; | |
672 | } | |
673 | } | |
fa713d9e | 674 | |
3ee39b5b | 675 | if (newhop->type == NEXTHOP_TYPE_IFINDEX) |
c3e6b595 CF |
676 | { |
677 | resolved_hop->flags |= NEXTHOP_FLAG_ONLINK; | |
678 | resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
679 | resolved_hop->gate.ipv6 = nexthop->gate.ipv6; | |
680 | resolved_hop->ifindex = newhop->ifindex; | |
681 | } | |
fa713d9e | 682 | |
a399694f | 683 | nexthop_add(&nexthop->resolved, resolved_hop); |
718e3744 | 684 | } |
fa713d9e | 685 | resolved = 1; |
718e3744 | 686 | } |
fa713d9e | 687 | return resolved; |
718e3744 | 688 | } |
689 | else | |
690 | { | |
691 | return 0; | |
692 | } | |
693 | } | |
694 | } | |
695 | return 0; | |
696 | } | |
718e3744 | 697 | |
698 | struct rib * | |
78104b9b | 699 | rib_match_ipv4 (struct in_addr addr, vrf_id_t vrf_id) |
718e3744 | 700 | { |
701 | struct prefix_ipv4 p; | |
702 | struct route_table *table; | |
703 | struct route_node *rn; | |
704 | struct rib *match; | |
fa713d9e CF |
705 | struct nexthop *newhop, *tnewhop; |
706 | int recursing; | |
718e3744 | 707 | |
708 | /* Lookup table. */ | |
78104b9b | 709 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id); |
718e3744 | 710 | if (! table) |
711 | return 0; | |
712 | ||
713 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
714 | p.family = AF_INET; | |
715 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
716 | p.prefix = addr; | |
717 | ||
718 | rn = route_node_match (table, (struct prefix *) &p); | |
719 | ||
720 | while (rn) | |
721 | { | |
722 | route_unlock_node (rn); | |
723 | ||
724 | /* Pick up selected route. */ | |
9fd92e3c | 725 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
726 | { |
727 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
728 | continue; | |
729 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
730 | break; | |
731 | } | |
718e3744 | 732 | |
733 | /* If there is no selected route or matched route is EGP, go up | |
734 | tree. */ | |
6e26278c | 735 | if (! match) |
718e3744 | 736 | { |
737 | do { | |
738 | rn = rn->parent; | |
739 | } while (rn && rn->info == NULL); | |
740 | if (rn) | |
741 | route_lock_node (rn); | |
742 | } | |
743 | else | |
744 | { | |
745 | if (match->type == ZEBRA_ROUTE_CONNECT) | |
746 | /* Directly point connected route. */ | |
747 | return match; | |
748 | else | |
749 | { | |
fa713d9e | 750 | for (ALL_NEXTHOPS_RO(match->nexthop, newhop, tnewhop, recursing)) |
718e3744 | 751 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) |
752 | return match; | |
753 | return NULL; | |
754 | } | |
755 | } | |
756 | } | |
757 | return NULL; | |
758 | } | |
759 | ||
760 | struct rib * | |
78104b9b | 761 | rib_lookup_ipv4 (struct prefix_ipv4 *p, vrf_id_t vrf_id) |
718e3744 | 762 | { |
763 | struct route_table *table; | |
764 | struct route_node *rn; | |
765 | struct rib *match; | |
fa713d9e CF |
766 | struct nexthop *nexthop, *tnexthop; |
767 | int recursing; | |
718e3744 | 768 | |
769 | /* Lookup table. */ | |
78104b9b | 770 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id); |
718e3744 | 771 | if (! table) |
772 | return 0; | |
773 | ||
774 | rn = route_node_lookup (table, (struct prefix *) p); | |
775 | ||
776 | /* No route for this prefix. */ | |
777 | if (! rn) | |
778 | return NULL; | |
779 | ||
780 | /* Unlock node. */ | |
781 | route_unlock_node (rn); | |
782 | ||
9fd92e3c | 783 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
784 | { |
785 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
786 | continue; | |
787 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
788 | break; | |
789 | } | |
718e3744 | 790 | |
6e26278c | 791 | if (! match) |
718e3744 | 792 | return NULL; |
793 | ||
794 | if (match->type == ZEBRA_ROUTE_CONNECT) | |
795 | return match; | |
796 | ||
fa713d9e | 797 | for (ALL_NEXTHOPS_RO(match->nexthop, nexthop, tnexthop, recursing)) |
718e3744 | 798 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
799 | return match; | |
800 | ||
801 | return NULL; | |
802 | } | |
803 | ||
dc95824a DO |
804 | /* |
805 | * This clone function, unlike its original rib_lookup_ipv4(), checks | |
806 | * if specified IPv4 route record (prefix/mask -> gate) exists in | |
807 | * the whole RIB and has ZEBRA_FLAG_SELECTED set. | |
808 | * | |
809 | * Return values: | |
810 | * -1: error | |
811 | * 0: exact match found | |
812 | * 1: a match was found with a different gate | |
813 | * 2: connected route found | |
814 | * 3: no matches found | |
815 | */ | |
816 | int | |
78104b9b FL |
817 | rib_lookup_ipv4_route (struct prefix_ipv4 *p, union sockunion * qgate, |
818 | vrf_id_t vrf_id) | |
dc95824a DO |
819 | { |
820 | struct route_table *table; | |
821 | struct route_node *rn; | |
822 | struct rib *match; | |
fa713d9e CF |
823 | struct nexthop *nexthop, *tnexthop; |
824 | int recursing; | |
825 | int nexthops_active; | |
dc95824a DO |
826 | |
827 | /* Lookup table. */ | |
78104b9b | 828 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id); |
dc95824a DO |
829 | if (! table) |
830 | return ZEBRA_RIB_LOOKUP_ERROR; | |
831 | ||
832 | /* Scan the RIB table for exactly matching RIB entry. */ | |
833 | rn = route_node_lookup (table, (struct prefix *) p); | |
834 | ||
835 | /* No route for this prefix. */ | |
836 | if (! rn) | |
837 | return ZEBRA_RIB_NOTFOUND; | |
838 | ||
839 | /* Unlock node. */ | |
840 | route_unlock_node (rn); | |
841 | ||
842 | /* Find out if a "selected" RR for the discovered RIB entry exists ever. */ | |
9fd92e3c | 843 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
844 | { |
845 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
846 | continue; | |
847 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
848 | break; | |
849 | } | |
dc95824a DO |
850 | |
851 | /* None such found :( */ | |
852 | if (!match) | |
853 | return ZEBRA_RIB_NOTFOUND; | |
854 | ||
855 | if (match->type == ZEBRA_ROUTE_CONNECT) | |
856 | return ZEBRA_RIB_FOUND_CONNECTED; | |
857 | ||
858 | /* Ok, we have a cood candidate, let's check it's nexthop list... */ | |
fa713d9e CF |
859 | nexthops_active = 0; |
860 | for (ALL_NEXTHOPS_RO(match->nexthop, nexthop, tnexthop, recursing)) | |
dc95824a | 861 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
dc95824a | 862 | { |
fa713d9e CF |
863 | nexthops_active = 1; |
864 | if (nexthop->gate.ipv4.s_addr == sockunion2ip (qgate)) | |
865 | return ZEBRA_RIB_FOUND_EXACT; | |
dc95824a | 866 | if (IS_ZEBRA_DEBUG_RIB) |
fa713d9e CF |
867 | { |
868 | char gate_buf[INET_ADDRSTRLEN], qgate_buf[INET_ADDRSTRLEN]; | |
869 | inet_ntop (AF_INET, &nexthop->gate.ipv4.s_addr, gate_buf, INET_ADDRSTRLEN); | |
870 | inet_ntop (AF_INET, &sockunion2ip(qgate), qgate_buf, INET_ADDRSTRLEN); | |
871 | zlog_debug ("%s: qgate == %s, %s == %s", __func__, | |
872 | qgate_buf, recursing ? "rgate" : "gate", gate_buf); | |
873 | } | |
dc95824a | 874 | } |
fa713d9e CF |
875 | |
876 | if (nexthops_active) | |
877 | return ZEBRA_RIB_FOUND_NOGATE; | |
dc95824a DO |
878 | |
879 | return ZEBRA_RIB_NOTFOUND; | |
880 | } | |
881 | ||
718e3744 | 882 | struct rib * |
78104b9b | 883 | rib_match_ipv6 (struct in6_addr *addr, vrf_id_t vrf_id) |
718e3744 | 884 | { |
885 | struct prefix_ipv6 p; | |
886 | struct route_table *table; | |
887 | struct route_node *rn; | |
888 | struct rib *match; | |
fa713d9e CF |
889 | struct nexthop *newhop, *tnewhop; |
890 | int recursing; | |
718e3744 | 891 | |
892 | /* Lookup table. */ | |
78104b9b | 893 | table = zebra_vrf_table (AFI_IP6, SAFI_UNICAST, vrf_id); |
718e3744 | 894 | if (! table) |
895 | return 0; | |
896 | ||
897 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
898 | p.family = AF_INET6; | |
899 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
900 | IPV6_ADDR_COPY (&p.prefix, addr); | |
901 | ||
902 | rn = route_node_match (table, (struct prefix *) &p); | |
903 | ||
904 | while (rn) | |
905 | { | |
906 | route_unlock_node (rn); | |
907 | ||
908 | /* Pick up selected route. */ | |
9fd92e3c | 909 | RNODE_FOREACH_RIB (rn, match) |
16814f96 SH |
910 | { |
911 | if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED)) | |
912 | continue; | |
913 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) | |
914 | break; | |
915 | } | |
718e3744 | 916 | |
917 | /* If there is no selected route or matched route is EGP, go up | |
918 | tree. */ | |
6e26278c | 919 | if (! match) |
718e3744 | 920 | { |
921 | do { | |
922 | rn = rn->parent; | |
923 | } while (rn && rn->info == NULL); | |
924 | if (rn) | |
925 | route_lock_node (rn); | |
926 | } | |
927 | else | |
928 | { | |
929 | if (match->type == ZEBRA_ROUTE_CONNECT) | |
930 | /* Directly point connected route. */ | |
931 | return match; | |
932 | else | |
933 | { | |
fa713d9e | 934 | for (ALL_NEXTHOPS_RO(match->nexthop, newhop, tnewhop, recursing)) |
718e3744 | 935 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) |
936 | return match; | |
937 | return NULL; | |
938 | } | |
939 | } | |
940 | } | |
941 | return NULL; | |
942 | } | |
718e3744 | 943 | |
7514fb77 PJ |
944 | #define RIB_SYSTEM_ROUTE(R) \ |
945 | ((R)->type == ZEBRA_ROUTE_KERNEL || (R)->type == ZEBRA_ROUTE_CONNECT) | |
946 | ||
dc95824a DO |
947 | /* This function verifies reachability of one given nexthop, which can be |
948 | * numbered or unnumbered, IPv4 or IPv6. The result is unconditionally stored | |
949 | * in nexthop->flags field. If the 4th parameter, 'set', is non-zero, | |
950 | * nexthop->ifindex will be updated appropriately as well. | |
951 | * An existing route map can turn (otherwise active) nexthop into inactive, but | |
952 | * not vice versa. | |
953 | * | |
954 | * The return value is the final value of 'ACTIVE' flag. | |
955 | */ | |
956 | ||
d02c56cd | 957 | static unsigned |
718e3744 | 958 | nexthop_active_check (struct route_node *rn, struct rib *rib, |
959 | struct nexthop *nexthop, int set) | |
960 | { | |
f3a1732e | 961 | rib_table_info_t *info = rn->table->info; |
718e3744 | 962 | struct interface *ifp; |
7514fb77 | 963 | route_map_result_t ret = RMAP_MATCH; |
7514fb77 | 964 | int family; |
518f0eb1 | 965 | char buf[INET6_ADDRSTRLEN+1]; |
718e3744 | 966 | |
7a4bb9c5 DS |
967 | if (rn->p.family == AF_INET) |
968 | family = AFI_IP; | |
969 | else if (rn->p.family == AF_INET6) | |
970 | family = AFI_IP6; | |
971 | else | |
972 | family = 0; | |
718e3744 | 973 | switch (nexthop->type) |
974 | { | |
975 | case NEXTHOP_TYPE_IFINDEX: | |
78104b9b | 976 | ifp = if_lookup_by_index_vrf (nexthop->ifindex, rib->vrf_id); |
3f087670 | 977 | if (ifp && if_is_operative(ifp)) |
718e3744 | 978 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
979 | else | |
980 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
981 | break; | |
718e3744 | 982 | case NEXTHOP_TYPE_IPV4: |
983 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
7514fb77 | 984 | family = AFI_IP; |
718e3744 | 985 | if (nexthop_active_ipv4 (rib, nexthop, set, rn)) |
986 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
987 | else | |
988 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
989 | break; | |
718e3744 | 990 | case NEXTHOP_TYPE_IPV6: |
7514fb77 | 991 | family = AFI_IP6; |
718e3744 | 992 | if (nexthop_active_ipv6 (rib, nexthop, set, rn)) |
993 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
994 | else | |
995 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
996 | break; | |
997 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
fb5d585c | 998 | /* RFC 5549, v4 prefix with v6 NH */ |
999 | if (rn->p.family != AF_INET) | |
1000 | family = AFI_IP6; | |
718e3744 | 1001 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->gate.ipv6)) |
1002 | { | |
78104b9b | 1003 | ifp = if_lookup_by_index_vrf (nexthop->ifindex, rib->vrf_id); |
3f087670 | 1004 | if (ifp && if_is_operative(ifp)) |
718e3744 | 1005 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
1006 | else | |
1007 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | if (nexthop_active_ipv6 (rib, nexthop, set, rn)) | |
1012 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1013 | else | |
1014 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1015 | } | |
1016 | break; | |
595db7f1 | 1017 | case NEXTHOP_TYPE_BLACKHOLE: |
1018 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1019 | break; | |
718e3744 | 1020 | default: |
1021 | break; | |
1022 | } | |
7514fb77 PJ |
1023 | if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE)) |
1024 | return 0; | |
1025 | ||
f3a1732e CF |
1026 | /* XXX: What exactly do those checks do? Do we support |
1027 | * e.g. IPv4 routes with IPv6 nexthops or vice versa? */ | |
7514fb77 PJ |
1028 | if (RIB_SYSTEM_ROUTE(rib) || |
1029 | (family == AFI_IP && rn->p.family != AF_INET) || | |
1030 | (family == AFI_IP6 && rn->p.family != AF_INET6)) | |
1031 | return CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1032 | ||
f3a1732e CF |
1033 | /* The original code didn't determine the family correctly |
1034 | * e.g. for NEXTHOP_TYPE_IFINDEX. Retrieve the correct afi | |
1035 | * from the rib_table_info in those cases. | |
1036 | * Possibly it may be better to use only the rib_table_info | |
1037 | * in every case. | |
1038 | */ | |
1039 | if (!family) | |
1040 | family = info->afi; | |
1041 | ||
c52ef59f | 1042 | memset(&nexthop->rmap_src.ipv6, 0, sizeof(union g_addr)); |
c52ef59f | 1043 | |
ca84c8ef | 1044 | /* It'll get set if required inside */ |
0032dd59 FL |
1045 | ret = zebra_route_map_check(family, rib->type, &rn->p, nexthop, rib->vrf_id, |
1046 | rib->tag); | |
7514fb77 | 1047 | if (ret == RMAP_DENYMATCH) |
518f0eb1 DS |
1048 | { |
1049 | if (IS_ZEBRA_DEBUG_RIB) | |
1050 | { | |
1051 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, sizeof (buf)); | |
41ec9222 | 1052 | zlog_debug("%u:%s/%d: Filtering out with NH out %s due to route map", |
3ee39b5b DS |
1053 | rib->vrf_id, buf, rn->p.prefixlen, |
1054 | ifindex2ifname_vrf (nexthop->ifindex, rib->vrf_id)); | |
518f0eb1 DS |
1055 | } |
1056 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
1057 | } | |
718e3744 | 1058 | return CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
1059 | } | |
1060 | ||
03e232a4 DO |
1061 | /* Iterate over all nexthops of the given RIB entry and refresh their |
1062 | * ACTIVE flag. rib->nexthop_active_num is updated accordingly. If any | |
1063 | * nexthop is found to toggle the ACTIVE flag, the whole rib structure | |
1064 | * is flagged with ZEBRA_FLAG_CHANGED. The 4th 'set' argument is | |
1065 | * transparently passed to nexthop_active_check(). | |
1066 | * | |
1067 | * Return value is the new number of active nexthops. | |
1068 | */ | |
1069 | ||
a1ac18c4 | 1070 | static int |
718e3744 | 1071 | nexthop_active_update (struct route_node *rn, struct rib *rib, int set) |
1072 | { | |
1073 | struct nexthop *nexthop; | |
c52ef59f | 1074 | union g_addr prev_src; |
6e26278c DS |
1075 | unsigned int prev_active, prev_index, new_active, old_num_nh; |
1076 | ||
1077 | old_num_nh = rib->nexthop_active_num; | |
718e3744 | 1078 | |
1079 | rib->nexthop_active_num = 0; | |
1080 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1081 | ||
1082 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
03e232a4 | 1083 | { |
c52ef59f DS |
1084 | /* No protocol daemon provides src and so we're skipping tracking it */ |
1085 | prev_src = nexthop->rmap_src; | |
03e232a4 | 1086 | prev_active = CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
c3a56063 | 1087 | prev_index = nexthop->ifindex; |
03e232a4 DO |
1088 | if ((new_active = nexthop_active_check (rn, rib, nexthop, set))) |
1089 | rib->nexthop_active_num++; | |
c52ef59f | 1090 | /* Don't allow src setting on IPv6 addr for now */ |
c3a56063 | 1091 | if (prev_active != new_active || |
c52ef59f DS |
1092 | prev_index != nexthop->ifindex || |
1093 | ((nexthop->type >= NEXTHOP_TYPE_IFINDEX && | |
1094 | nexthop->type < NEXTHOP_TYPE_IPV6) && | |
0aabccc0 DD |
1095 | prev_src.ipv4.s_addr != nexthop->rmap_src.ipv4.s_addr) || |
1096 | ((nexthop->type >= NEXTHOP_TYPE_IPV6 && | |
1097 | nexthop->type < NEXTHOP_TYPE_BLACKHOLE) && | |
1098 | !(IPV6_ADDR_SAME (&prev_src.ipv6, &nexthop->rmap_src.ipv6)))) | |
6e26278c DS |
1099 | { |
1100 | SET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1101 | SET_FLAG (rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); | |
1102 | } | |
03e232a4 | 1103 | } |
6e26278c DS |
1104 | |
1105 | if (old_num_nh != rib->nexthop_active_num) | |
1106 | SET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1107 | ||
1108 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_CHANGED)) | |
1109 | { | |
1110 | SET_FLAG (rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); | |
1111 | } | |
1112 | ||
718e3744 | 1113 | return rib->nexthop_active_num; |
1114 | } | |
6baeb988 | 1115 | |
6b0655a2 | 1116 | |
718e3744 | 1117 | |
6ae24471 DS |
1118 | /* Update flag indicates whether this is a "replace" or not. Currently, this |
1119 | * is only used for IPv4. | |
1120 | */ | |
a1ac18c4 | 1121 | static void |
6ae24471 | 1122 | rib_install_kernel (struct route_node *rn, struct rib *rib, int update) |
718e3744 | 1123 | { |
1124 | int ret = 0; | |
fa713d9e CF |
1125 | struct nexthop *nexthop, *tnexthop; |
1126 | int recursing; | |
718e3744 | 1127 | |
5adc2528 AS |
1128 | /* |
1129 | * Make sure we update the FPM any time we send new information to | |
1130 | * the kernel. | |
1131 | */ | |
1132 | zfpm_trigger_update (rn, "installing in kernel"); | |
718e3744 | 1133 | switch (PREFIX_FAMILY (&rn->p)) |
1134 | { | |
1135 | case AF_INET: | |
6ae24471 DS |
1136 | if (update) |
1137 | ret = kernel_update_ipv4 (&rn->p, rib); | |
1138 | else | |
1139 | ret = kernel_add_ipv4 (&rn->p, rib); | |
718e3744 | 1140 | break; |
718e3744 | 1141 | case AF_INET6: |
dccc5225 | 1142 | if (update) |
1143 | ret = kernel_update_ipv6 (&rn->p, rib); | |
1144 | else | |
1145 | ret = kernel_add_ipv6 (&rn->p, rib); | |
718e3744 | 1146 | break; |
718e3744 | 1147 | } |
1148 | ||
dc95824a | 1149 | /* This condition is never met, if we are using rt_socket.c */ |
718e3744 | 1150 | if (ret < 0) |
1151 | { | |
fa713d9e | 1152 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) |
718e3744 | 1153 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
1154 | } | |
1155 | } | |
1156 | ||
1157 | /* Uninstall the route from kernel. */ | |
a1ac18c4 | 1158 | static int |
718e3744 | 1159 | rib_uninstall_kernel (struct route_node *rn, struct rib *rib) |
1160 | { | |
1161 | int ret = 0; | |
fa713d9e CF |
1162 | struct nexthop *nexthop, *tnexthop; |
1163 | int recursing; | |
718e3744 | 1164 | |
5adc2528 AS |
1165 | /* |
1166 | * Make sure we update the FPM any time we send new information to | |
1167 | * the kernel. | |
1168 | */ | |
1169 | zfpm_trigger_update (rn, "uninstalling from kernel"); | |
1170 | ||
718e3744 | 1171 | switch (PREFIX_FAMILY (&rn->p)) |
1172 | { | |
1173 | case AF_INET: | |
1174 | ret = kernel_delete_ipv4 (&rn->p, rib); | |
1175 | break; | |
718e3744 | 1176 | case AF_INET6: |
1177 | ret = kernel_delete_ipv6 (&rn->p, rib); | |
1178 | break; | |
718e3744 | 1179 | } |
1180 | ||
fa713d9e | 1181 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) |
718e3744 | 1182 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
1183 | ||
1184 | return ret; | |
1185 | } | |
1186 | ||
1187 | /* Uninstall the route from kernel. */ | |
a1ac18c4 | 1188 | static void |
718e3744 | 1189 | rib_uninstall (struct route_node *rn, struct rib *rib) |
1190 | { | |
1191 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) | |
1192 | { | |
5adc2528 AS |
1193 | zfpm_trigger_update (rn, "rib_uninstall"); |
1194 | ||
718e3744 | 1195 | redistribute_delete (&rn->p, rib); |
1196 | if (! RIB_SYSTEM_ROUTE (rib)) | |
1197 | rib_uninstall_kernel (rn, rib); | |
1198 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_SELECTED); | |
1199 | } | |
1200 | } | |
1201 | ||
6d691129 PJ |
1202 | static void rib_unlink (struct route_node *, struct rib *); |
1203 | ||
9fd92e3c AS |
1204 | /* |
1205 | * rib_can_delete_dest | |
1206 | * | |
1207 | * Returns TRUE if the given dest can be deleted from the table. | |
1208 | */ | |
1209 | static int | |
1210 | rib_can_delete_dest (rib_dest_t *dest) | |
1211 | { | |
1212 | if (dest->routes) | |
1213 | { | |
1214 | return 0; | |
1215 | } | |
1216 | ||
5adc2528 AS |
1217 | /* |
1218 | * Don't delete the dest if we have to update the FPM about this | |
1219 | * prefix. | |
1220 | */ | |
1221 | if (CHECK_FLAG (dest->flags, RIB_DEST_UPDATE_FPM) || | |
1222 | CHECK_FLAG (dest->flags, RIB_DEST_SENT_TO_FPM)) | |
1223 | return 0; | |
1224 | ||
9fd92e3c AS |
1225 | return 1; |
1226 | } | |
1227 | ||
1228 | /* | |
1229 | * rib_gc_dest | |
1230 | * | |
1231 | * Garbage collect the rib dest corresponding to the given route node | |
1232 | * if appropriate. | |
1233 | * | |
1234 | * Returns TRUE if the dest was deleted, FALSE otherwise. | |
1235 | */ | |
1236 | int | |
1237 | rib_gc_dest (struct route_node *rn) | |
1238 | { | |
1239 | rib_dest_t *dest; | |
1240 | char buf[INET6_ADDRSTRLEN]; | |
41ec9222 | 1241 | struct zebra_vrf *zvrf; |
9fd92e3c AS |
1242 | |
1243 | dest = rib_dest_from_rnode (rn); | |
1244 | if (!dest) | |
1245 | return 0; | |
1246 | ||
1247 | if (!rib_can_delete_dest (dest)) | |
1248 | return 0; | |
1249 | ||
41ec9222 | 1250 | zvrf = rib_dest_vrf (dest); |
1251 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
9fd92e3c AS |
1252 | { |
1253 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, sizeof (buf)); | |
41ec9222 | 1254 | zlog_debug ("%u:%s/%d: rn %p removing dest", |
1255 | zvrf->vrf_id, buf, rn->p.prefixlen, rn); | |
9fd92e3c AS |
1256 | } |
1257 | ||
1258 | dest->rnode = NULL; | |
1259 | XFREE (MTYPE_RIB_DEST, dest); | |
1260 | rn->info = NULL; | |
1261 | ||
1262 | /* | |
1263 | * Release the one reference that we keep on the route node. | |
1264 | */ | |
1265 | route_unlock_node (rn); | |
1266 | return 1; | |
1267 | } | |
1268 | ||
718e3744 | 1269 | /* Core function for processing routing information base. */ |
e96f9203 DO |
1270 | static void |
1271 | rib_process (struct route_node *rn) | |
718e3744 | 1272 | { |
1273 | struct rib *rib; | |
1274 | struct rib *next; | |
1275 | struct rib *fib = NULL; | |
1276 | struct rib *select = NULL; | |
6d691129 | 1277 | struct rib *del = NULL; |
d753e9ee | 1278 | int installed = 0; |
fa713d9e CF |
1279 | struct nexthop *nexthop = NULL, *tnexthop; |
1280 | int recursing; | |
f304cb48 | 1281 | char buf[INET6_ADDRSTRLEN]; |
41ec9222 | 1282 | rib_dest_t *dest; |
1283 | struct zebra_vrf *zvrf = NULL; | |
58255d34 | 1284 | vrf_id_t vrf_id = VRF_UNKNOWN; |
41ec9222 | 1285 | |
4d38fdb4 | 1286 | assert (rn); |
1287 | ||
41ec9222 | 1288 | dest = rib_dest_from_rnode (rn); |
1289 | if (dest) | |
1290 | { | |
1291 | zvrf = rib_dest_vrf (dest); | |
1292 | vrf_id = zvrf->vrf_id; | |
1293 | } | |
1294 | ||
1295 | if (IS_ZEBRA_DEBUG_RIB) | |
f304cb48 | 1296 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN); |
93bdadae | 1297 | |
41ec9222 | 1298 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
1299 | zlog_debug ("%u:%s/%d: Processing rn %p", vrf_id, buf, rn->p.prefixlen, rn); | |
1300 | ||
9fd92e3c | 1301 | RNODE_FOREACH_RIB_SAFE (rn, rib, next) |
718e3744 | 1302 | { |
41ec9222 | 1303 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
1304 | zlog_debug ("%u:%s/%d: Examine rib %p (type %d) status %x flags %x " | |
1305 | "dist %d metric %d", | |
1306 | vrf_id, buf, rn->p.prefixlen, rib, rib->type, rib->status, | |
1307 | rib->flags, rib->distance, rib->metric); | |
1308 | ||
6e26278c DS |
1309 | UNSET_FLAG(rib->status, RIB_ENTRY_NEXTHOPS_CHANGED); |
1310 | ||
718e3744 | 1311 | /* Currently installed rib. */ |
1312 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) | |
6d691129 PJ |
1313 | { |
1314 | assert (fib == NULL); | |
1315 | fib = rib; | |
1316 | } | |
ca657c65 | 1317 | |
6d691129 PJ |
1318 | /* Unlock removed routes, so they'll be freed, bar the FIB entry, |
1319 | * which we need to do do further work with below. | |
1320 | */ | |
1321 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
1322 | { | |
1323 | if (rib != fib) | |
1324 | { | |
1325 | if (IS_ZEBRA_DEBUG_RIB) | |
41ec9222 | 1326 | zlog_debug ("%u:%s/%d: Freeing route rn %p, rib %p (type %d)", |
1327 | vrf_id, buf, rn->p.prefixlen, rn, rib, rib->type); | |
9fd92e3c | 1328 | rib_unlink (rn, rib); |
6d691129 PJ |
1329 | } |
1330 | else | |
1331 | del = rib; | |
1332 | ||
1333 | continue; | |
1334 | } | |
4d38fdb4 | 1335 | |
718e3744 | 1336 | /* Skip unreachable nexthop. */ |
ca657c65 DS |
1337 | /* This first call to nexthop_active_update is merely to determine if |
1338 | * there's any change to nexthops associated with this RIB entry. Now, | |
1339 | * rib_process() can be invoked due to an external event such as link | |
1340 | * down or due to next-hop-tracking evaluation. In the latter case, | |
1341 | * a decision has already been made that the NHs have changed. So, no | |
1342 | * need to invoke a potentially expensive call again. Further, since | |
1343 | * the change might be in a recursive NH which is not caught in | |
1344 | * the nexthop_active_update() code. Thus, we might miss changes to | |
1345 | * recursive NHs. | |
6e26278c | 1346 | */ |
ca657c65 | 1347 | if (!CHECK_FLAG(rib->flags, ZEBRA_FLAG_CHANGED) && |
6e26278c | 1348 | ! nexthop_active_update (rn, rib, 0)) |
7021c425 | 1349 | continue; |
718e3744 | 1350 | |
1351 | /* Infinit distance. */ | |
1352 | if (rib->distance == DISTANCE_INFINITY) | |
8733ba72 DS |
1353 | { |
1354 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1355 | continue; | |
1356 | } | |
718e3744 | 1357 | |
af887b51 | 1358 | /* Newly selected rib, the common case. */ |
1359 | if (!select) | |
1360 | { | |
1361 | select = rib; | |
1362 | continue; | |
1363 | } | |
1364 | ||
1365 | /* filter route selection in following order: | |
af887b51 | 1366 | * - connected beats other types |
a8d9c1f9 | 1367 | * - lower distance beats higher |
af887b51 | 1368 | * - lower metric beats higher for equal distance |
1369 | * - last, hence oldest, route wins tie break. | |
1370 | */ | |
a1038a15 | 1371 | |
1372 | /* Connected routes. Pick the last connected | |
1373 | * route of the set of lowest metric connected routes. | |
1374 | */ | |
a8d9c1f9 | 1375 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
1376 | { | |
a1038a15 | 1377 | if (select->type != ZEBRA_ROUTE_CONNECT |
a8d9c1f9 | 1378 | || rib->metric <= select->metric) |
8733ba72 DS |
1379 | { |
1380 | UNSET_FLAG (select->flags, ZEBRA_FLAG_CHANGED); | |
1381 | select = rib; | |
1382 | } | |
1383 | else | |
1384 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
a1038a15 | 1385 | continue; |
a8d9c1f9 | 1386 | } |
1387 | else if (select->type == ZEBRA_ROUTE_CONNECT) | |
8733ba72 DS |
1388 | { |
1389 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1390 | continue; | |
1391 | } | |
a8d9c1f9 | 1392 | |
1393 | /* higher distance loses */ | |
1394 | if (rib->distance > select->distance) | |
8733ba72 DS |
1395 | { |
1396 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); | |
1397 | continue; | |
1398 | } | |
a8d9c1f9 | 1399 | |
1400 | /* lower wins */ | |
1401 | if (rib->distance < select->distance) | |
1402 | { | |
8733ba72 | 1403 | UNSET_FLAG (select->flags, ZEBRA_FLAG_CHANGED); |
af887b51 | 1404 | select = rib; |
a8d9c1f9 | 1405 | continue; |
1406 | } | |
1407 | ||
1408 | /* metric tie-breaks equal distance */ | |
1409 | if (rib->metric <= select->metric) | |
8733ba72 DS |
1410 | { |
1411 | UNSET_FLAG (select->flags, ZEBRA_FLAG_CHANGED); | |
1412 | select = rib; | |
1413 | } | |
9fd92e3c | 1414 | } /* RNODE_FOREACH_RIB_SAFE */ |
dc95824a DO |
1415 | |
1416 | /* After the cycle is finished, the following pointers will be set: | |
1417 | * select --- the winner RIB entry, if any was found, otherwise NULL | |
1418 | * fib --- the SELECTED RIB entry, if any, otherwise NULL | |
1419 | * del --- equal to fib, if fib is queued for deletion, NULL otherwise | |
1420 | * rib --- NULL | |
1421 | */ | |
41ec9222 | 1422 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
1423 | zlog_debug ("%u:%s/%d: After processing: select %p fib %p del %p", | |
1424 | vrf_id, buf, rn->p.prefixlen, select, fib, del); | |
dc95824a DO |
1425 | |
1426 | /* Same RIB entry is selected. Update FIB and finish. */ | |
718e3744 | 1427 | if (select && select == fib) |
1428 | { | |
1429 | if (CHECK_FLAG (select->flags, ZEBRA_FLAG_CHANGED)) | |
4d38fdb4 | 1430 | { |
5adc2528 AS |
1431 | zfpm_trigger_update (rn, "updating existing route"); |
1432 | ||
4d38fdb4 | 1433 | /* Set real nexthop. */ |
6e26278c DS |
1434 | /* Need to check if any NHs are active to clear the |
1435 | * the selected flag | |
1436 | */ | |
1437 | if (nexthop_active_update (rn, select, 1)) | |
1438 | { | |
41ec9222 | 1439 | if (IS_ZEBRA_DEBUG_RIB) |
1440 | zlog_debug ("%u:%s/%d: Updating route rn %p, rib %p (type %d)", | |
1441 | vrf_id, buf, rn->p.prefixlen, rn, select, select->type); | |
dccc5225 | 1442 | if (! RIB_SYSTEM_ROUTE (select)) |
6ae24471 | 1443 | { |
dccc5225 | 1444 | /* Clear FIB flag if performing a replace, will get set again |
1445 | * as part of install. | |
1446 | */ | |
6ae24471 DS |
1447 | for (nexthop = select->nexthop; nexthop; nexthop = nexthop->next) |
1448 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
dccc5225 | 1449 | rib_install_kernel (rn, select, 1); |
6ae24471 | 1450 | } |
5048fe14 | 1451 | |
1452 | /* assuming that the receiver knows how to dedup */ | |
c41fc67b | 1453 | redistribute_update (&rn->p, select, NULL); |
6e26278c DS |
1454 | } |
1455 | else | |
1456 | { | |
41ec9222 | 1457 | if (IS_ZEBRA_DEBUG_RIB) |
1458 | zlog_debug ("%u:%s/%d: Deleting route rn %p, rib %p (type %d) " | |
1459 | "- nexthop inactive", | |
1460 | vrf_id, buf, rn->p.prefixlen, rn, select, select->type); | |
1461 | ||
5048fe14 | 1462 | /* Withdraw unreachable redistribute route */ |
1463 | redistribute_delete(&rn->p, select); | |
1464 | ||
dccc5225 | 1465 | /* Do the uninstall here, if not done earlier. */ |
1466 | if (! RIB_SYSTEM_ROUTE (select)) | |
6ae24471 | 1467 | rib_uninstall_kernel (rn, select); |
6e26278c DS |
1468 | UNSET_FLAG (select->flags, ZEBRA_FLAG_SELECTED); |
1469 | } | |
ca657c65 | 1470 | UNSET_FLAG (select->flags, ZEBRA_FLAG_CHANGED); |
6e26278c | 1471 | } |
d753e9ee | 1472 | else if (! RIB_SYSTEM_ROUTE (select)) |
4d38fdb4 | 1473 | { |
1474 | /* Housekeeping code to deal with | |
1475 | race conditions in kernel with linux | |
1476 | netlink reporting interface up before IPv4 or IPv6 protocol | |
1477 | is ready to add routes. | |
1478 | This makes sure the routes are IN the kernel. | |
1479 | */ | |
1480 | ||
fa713d9e | 1481 | for (ALL_NEXTHOPS_RO(select->nexthop, nexthop, tnexthop, recursing)) |
a3aaf5b0 | 1482 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
4d38fdb4 | 1483 | { |
a3aaf5b0 DO |
1484 | installed = 1; |
1485 | break; | |
4d38fdb4 | 1486 | } |
1487 | if (! installed) | |
6ae24471 | 1488 | rib_install_kernel (rn, select, 0); |
4d38fdb4 | 1489 | } |
6d691129 | 1490 | goto end; |
718e3744 | 1491 | } |
1492 | ||
dc95824a DO |
1493 | /* At this point we either haven't found the best RIB entry or it is |
1494 | * different from what we currently intend to flag with SELECTED. In both | |
1495 | * cases, if a RIB block is present in FIB, it should be withdrawn. | |
1496 | */ | |
718e3744 | 1497 | if (fib) |
1498 | { | |
5adc2528 AS |
1499 | zfpm_trigger_update (rn, "removing existing route"); |
1500 | ||
dccc5225 | 1501 | /* If there's no route to replace this with, withdraw redistribute and |
1502 | * uninstall from kernel. | |
1503 | */ | |
5048fe14 | 1504 | if (!select) |
6ae24471 | 1505 | { |
41ec9222 | 1506 | if (IS_ZEBRA_DEBUG_RIB) |
1507 | zlog_debug ("%u:%s/%d: Deleting route rn %p, rib %p (type %d)", | |
1508 | vrf_id, buf, rn->p.prefixlen, rn, fib, fib->type); | |
1509 | ||
dccc5225 | 1510 | redistribute_delete(&rn->p, fib); |
1511 | if (! RIB_SYSTEM_ROUTE (fib)) | |
1512 | rib_uninstall_kernel (rn, fib); | |
6ae24471 | 1513 | } |
dccc5225 | 1514 | |
718e3744 | 1515 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); |
1516 | ||
1517 | /* Set real nexthop. */ | |
1518 | nexthop_active_update (rn, fib, 1); | |
ca657c65 | 1519 | UNSET_FLAG(fib->flags, ZEBRA_FLAG_CHANGED); |
718e3744 | 1520 | } |
1521 | ||
dc95824a DO |
1522 | /* Regardless of some RIB entry being SELECTED or not before, now we can |
1523 | * tell, that if a new winner exists, FIB is still not updated with this | |
1524 | * data, but ready to be. | |
1525 | */ | |
718e3744 | 1526 | if (select) |
1527 | { | |
5adc2528 AS |
1528 | zfpm_trigger_update (rn, "new route selected"); |
1529 | ||
718e3744 | 1530 | /* Set real nexthop. */ |
6e26278c DS |
1531 | if (nexthop_active_update (rn, select, 1)) |
1532 | { | |
41ec9222 | 1533 | if (IS_ZEBRA_DEBUG_RIB) |
1534 | { | |
1535 | if (fib) | |
1536 | zlog_debug ("%u:%s/%d: Updating route rn %p, rib %p (type %d) " | |
1537 | "old %p (type %d)", vrf_id, buf, rn->p.prefixlen, rn, | |
1538 | select, select->type, fib, fib->type); | |
1539 | else | |
1540 | zlog_debug ("%u:%s/%d: Adding route rn %p, rib %p (type %d)", | |
1541 | vrf_id, buf, rn->p.prefixlen, rn, select, select->type); | |
1542 | } | |
1543 | ||
dccc5225 | 1544 | if (! RIB_SYSTEM_ROUTE (select)) |
6ae24471 | 1545 | { |
dccc5225 | 1546 | /* Clear FIB flag if performing a replace, will get set again |
1547 | * as part of install. | |
1548 | */ | |
1549 | if (fib) | |
1550 | { | |
1551 | for (nexthop = fib->nexthop; nexthop; nexthop = nexthop->next) | |
1552 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
1553 | } | |
1554 | rib_install_kernel (rn, select, fib? 1 : 0); | |
6ae24471 | 1555 | } |
0b560feb | 1556 | else |
1557 | { | |
1558 | /* Uninstall prior route here, if needed. */ | |
1559 | if (fib && !RIB_SYSTEM_ROUTE (fib)) | |
1560 | rib_uninstall_kernel (rn, fib); | |
1561 | } | |
dccc5225 | 1562 | |
6e26278c | 1563 | SET_FLAG (select->flags, ZEBRA_FLAG_SELECTED); |
5048fe14 | 1564 | /* Unconditionally announce, this part is exercised by new routes */ |
c41fc67b | 1565 | /* If we cannot add, for example route added is learnt by the */ |
1566 | /* protocol we're trying to redistribute to, delete the redist */ | |
1567 | /* This is notified by setting the is_update to 1 */ | |
1568 | redistribute_update (&rn->p, select, fib); | |
6e26278c | 1569 | } |
6ae24471 DS |
1570 | else |
1571 | { | |
41ec9222 | 1572 | /* Uninstall prior route here and do redist delete, if needed. */ |
a219b295 | 1573 | if (fib) |
41ec9222 | 1574 | { |
1575 | if (IS_ZEBRA_DEBUG_RIB) | |
1576 | zlog_debug ("%u:%s/%d: Deleting route rn %p, rib %p (type %d) " | |
1577 | "- nexthop inactive", | |
1578 | vrf_id, buf, rn->p.prefixlen, rn, fib, fib->type); | |
1579 | ||
1580 | if (!RIB_SYSTEM_ROUTE (fib)) | |
1581 | rib_uninstall_kernel (rn, fib); | |
1582 | redistribute_delete(&rn->p, fib); | |
1583 | } | |
6ae24471 | 1584 | } |
ca657c65 | 1585 | UNSET_FLAG(select->flags, ZEBRA_FLAG_CHANGED); |
718e3744 | 1586 | } |
4d38fdb4 | 1587 | |
6d691129 PJ |
1588 | /* FIB route was removed, should be deleted */ |
1589 | if (del) | |
1590 | { | |
1591 | if (IS_ZEBRA_DEBUG_RIB) | |
41ec9222 | 1592 | zlog_debug ("%u:%s/%d: Freeing route rn %p, rib %p (type %d)", |
1593 | vrf_id, buf, rn->p.prefixlen, rn, del, del->type); | |
6d691129 PJ |
1594 | rib_unlink (rn, del); |
1595 | } | |
4d38fdb4 | 1596 | |
6d691129 | 1597 | end: |
9fd92e3c AS |
1598 | /* |
1599 | * Check if the dest can be deleted now. | |
1600 | */ | |
1601 | rib_gc_dest (rn); | |
e96f9203 DO |
1602 | } |
1603 | ||
5110a0c6 SH |
1604 | /* Take a list of route_node structs and return 1, if there was a record |
1605 | * picked from it and processed by rib_process(). Don't process more, | |
1606 | * than one RN record; operate only in the specified sub-queue. | |
e96f9203 | 1607 | */ |
ef9b113e | 1608 | static unsigned int |
e96f9203 DO |
1609 | process_subq (struct list * subq, u_char qindex) |
1610 | { | |
5110a0c6 | 1611 | struct listnode *lnode = listhead (subq); |
e96f9203 | 1612 | struct route_node *rnode; |
41ec9222 | 1613 | char buf[INET6_ADDRSTRLEN]; |
1614 | rib_dest_t *dest; | |
1615 | struct zebra_vrf *zvrf = NULL; | |
5110a0c6 SH |
1616 | |
1617 | if (!lnode) | |
e96f9203 | 1618 | return 0; |
5110a0c6 | 1619 | |
e96f9203 | 1620 | rnode = listgetdata (lnode); |
41ec9222 | 1621 | dest = rib_dest_from_rnode (rnode); |
1622 | if (dest) | |
1623 | zvrf = rib_dest_vrf (dest); | |
1624 | ||
e96f9203 | 1625 | rib_process (rnode); |
5110a0c6 | 1626 | |
41ec9222 | 1627 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
1628 | { | |
1629 | inet_ntop (rnode->p.family, &rnode->p.u.prefix, buf, INET6_ADDRSTRLEN); | |
1630 | zlog_debug ("%u:%s/%d: rn %p dequeued from sub-queue %u", | |
1631 | zvrf ? zvrf->vrf_id : 0, buf, rnode->p.prefixlen, rnode, qindex); | |
1632 | } | |
1633 | ||
9fd92e3c AS |
1634 | if (rnode->info) |
1635 | UNSET_FLAG (rib_dest_from_rnode (rnode)->flags, RIB_ROUTE_QUEUED (qindex)); | |
1636 | ||
67b9467f | 1637 | #if 0 |
5110a0c6 SH |
1638 | else |
1639 | { | |
1640 | zlog_debug ("%s: called for route_node (%p, %d) with no ribs", | |
1641 | __func__, rnode, rnode->lock); | |
1642 | zlog_backtrace(LOG_DEBUG); | |
1643 | } | |
67b9467f | 1644 | #endif |
e96f9203 DO |
1645 | route_unlock_node (rnode); |
1646 | list_delete_node (subq, lnode); | |
1647 | return 1; | |
1648 | } | |
1649 | ||
fb018d25 DS |
1650 | /* |
1651 | * All meta queues have been processed. Trigger next-hop evaluation. | |
1652 | */ | |
1653 | static void | |
1654 | meta_queue_process_complete (struct work_queue *dummy) | |
1655 | { | |
9ec6b0bb | 1656 | vrf_iter_t iter; |
1657 | struct zebra_vrf *zvrf; | |
1658 | ||
1659 | /* Evaluate nexthops for those VRFs which underwent route processing. This | |
1660 | * should limit the evaluation to the necessary VRFs in most common | |
1661 | * situations. | |
1662 | */ | |
1663 | for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter)) | |
1664 | { | |
1665 | if (((zvrf = vrf_iter2info (iter)) != NULL) && | |
1666 | (zvrf->flags & ZEBRA_VRF_RIB_SCHEDULED)) | |
1667 | { | |
1668 | zvrf->flags &= ~ZEBRA_VRF_RIB_SCHEDULED; | |
1669 | zebra_evaluate_rnh(zvrf->vrf_id, AF_INET, 0, RNH_NEXTHOP_TYPE, NULL); | |
1670 | zebra_evaluate_rnh(zvrf->vrf_id, AF_INET, 0, RNH_IMPORT_CHECK_TYPE, NULL); | |
1671 | zebra_evaluate_rnh(zvrf->vrf_id, AF_INET6, 0, RNH_NEXTHOP_TYPE, NULL); | |
1672 | zebra_evaluate_rnh(zvrf->vrf_id, AF_INET6, 0, RNH_IMPORT_CHECK_TYPE, NULL); | |
1673 | } | |
1674 | } | |
fb018d25 DS |
1675 | } |
1676 | ||
e96f9203 DO |
1677 | /* Dispatch the meta queue by picking, processing and unlocking the next RN from |
1678 | * a non-empty sub-queue with lowest priority. wq is equal to zebra->ribq and data | |
1679 | * is pointed to the meta queue structure. | |
1680 | */ | |
1681 | static wq_item_status | |
1682 | meta_queue_process (struct work_queue *dummy, void *data) | |
1683 | { | |
1684 | struct meta_queue * mq = data; | |
5110a0c6 SH |
1685 | unsigned i; |
1686 | ||
e96f9203 DO |
1687 | for (i = 0; i < MQ_SIZE; i++) |
1688 | if (process_subq (mq->subq[i], i)) | |
5110a0c6 SH |
1689 | { |
1690 | mq->size--; | |
1691 | break; | |
1692 | } | |
e96f9203 DO |
1693 | return mq->size ? WQ_REQUEUE : WQ_SUCCESS; |
1694 | } | |
1695 | ||
9fd92e3c AS |
1696 | /* |
1697 | * Map from rib types to queue type (priority) in meta queue | |
1698 | */ | |
5110a0c6 SH |
1699 | static const u_char meta_queue_map[ZEBRA_ROUTE_MAX] = { |
1700 | [ZEBRA_ROUTE_SYSTEM] = 4, | |
1701 | [ZEBRA_ROUTE_KERNEL] = 0, | |
1702 | [ZEBRA_ROUTE_CONNECT] = 0, | |
1703 | [ZEBRA_ROUTE_STATIC] = 1, | |
1704 | [ZEBRA_ROUTE_RIP] = 2, | |
1705 | [ZEBRA_ROUTE_RIPNG] = 2, | |
1706 | [ZEBRA_ROUTE_OSPF] = 2, | |
1707 | [ZEBRA_ROUTE_OSPF6] = 2, | |
1708 | [ZEBRA_ROUTE_ISIS] = 2, | |
1709 | [ZEBRA_ROUTE_BGP] = 3, | |
1710 | [ZEBRA_ROUTE_HSLS] = 4, | |
7a4bb9c5 | 1711 | [ZEBRA_ROUTE_TABLE] = 1, |
5110a0c6 SH |
1712 | }; |
1713 | ||
1714 | /* Look into the RN and queue it into one or more priority queues, | |
1715 | * increasing the size for each data push done. | |
e96f9203 | 1716 | */ |
ef9b113e SH |
1717 | static void |
1718 | rib_meta_queue_add (struct meta_queue *mq, struct route_node *rn) | |
e96f9203 | 1719 | { |
e96f9203 DO |
1720 | struct rib *rib; |
1721 | char buf[INET6_ADDRSTRLEN]; | |
5110a0c6 | 1722 | |
41ec9222 | 1723 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
e96f9203 | 1724 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN); |
5110a0c6 | 1725 | |
9fd92e3c | 1726 | RNODE_FOREACH_RIB (rn, rib) |
e96f9203 | 1727 | { |
5110a0c6 | 1728 | u_char qindex = meta_queue_map[rib->type]; |
9ec6b0bb | 1729 | struct zebra_vrf *zvrf; |
5110a0c6 SH |
1730 | |
1731 | /* Invariant: at this point we always have rn->info set. */ | |
9fd92e3c AS |
1732 | if (CHECK_FLAG (rib_dest_from_rnode (rn)->flags, |
1733 | RIB_ROUTE_QUEUED (qindex))) | |
41ec9222 | 1734 | continue; |
5110a0c6 | 1735 | |
9fd92e3c | 1736 | SET_FLAG (rib_dest_from_rnode (rn)->flags, RIB_ROUTE_QUEUED (qindex)); |
5110a0c6 SH |
1737 | listnode_add (mq->subq[qindex], rn); |
1738 | route_lock_node (rn); | |
1739 | mq->size++; | |
1740 | ||
41ec9222 | 1741 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
1742 | zlog_debug ("%u:%s/%d: rn %p queued into sub-queue %u", | |
1743 | rib->vrf_id, buf, rn->p.prefixlen, rn, qindex); | |
9ec6b0bb | 1744 | |
1745 | zvrf = zebra_vrf_lookup (rib->vrf_id); | |
1746 | if (zvrf) | |
1747 | zvrf->flags |= ZEBRA_VRF_RIB_SCHEDULED; | |
e96f9203 | 1748 | } |
4d38fdb4 | 1749 | } |
1750 | ||
6d691129 | 1751 | /* Add route_node to work queue and schedule processing */ |
6e26278c | 1752 | void |
44e9909d | 1753 | rib_queue_add (struct route_node *rn) |
4d38fdb4 | 1754 | { |
44e9909d | 1755 | assert (rn); |
4d38fdb4 | 1756 | |
fc328ac9 | 1757 | /* Pointless to queue a route_node with no RIB entries to add or remove */ |
9fd92e3c | 1758 | if (!rnode_to_ribs (rn)) |
6d691129 | 1759 | { |
fc328ac9 SV |
1760 | zlog_debug ("%s: called for route_node (%p, %d) with no ribs", |
1761 | __func__, rn, rn->lock); | |
1762 | zlog_backtrace(LOG_DEBUG); | |
1763 | return; | |
1764 | } | |
1765 | ||
44e9909d | 1766 | if (zebrad.ribq == NULL) |
fc328ac9 SV |
1767 | { |
1768 | zlog_err ("%s: work_queue does not exist!", __func__); | |
1769 | return; | |
4d38fdb4 | 1770 | } |
4d38fdb4 | 1771 | |
cc2dd928 SH |
1772 | /* |
1773 | * The RIB queue should normally be either empty or holding the only | |
1774 | * work_queue_item element. In the latter case this element would | |
1775 | * hold a pointer to the meta queue structure, which must be used to | |
1776 | * actually queue the route nodes to process. So create the MQ | |
1777 | * holder, if necessary, then push the work into it in any case. | |
e96f9203 DO |
1778 | * This semantics was introduced after 0.99.9 release. |
1779 | */ | |
44e9909d DS |
1780 | if (!zebrad.ribq->items->count) |
1781 | work_queue_add (zebrad.ribq, zebrad.mq); | |
e96f9203 | 1782 | |
44e9909d | 1783 | rib_meta_queue_add (zebrad.mq, rn); |
fc328ac9 | 1784 | |
fc328ac9 | 1785 | return; |
4d38fdb4 | 1786 | } |
1787 | ||
5110a0c6 SH |
1788 | /* Create new meta queue. |
1789 | A destructor function doesn't seem to be necessary here. | |
1790 | */ | |
ef9b113e SH |
1791 | static struct meta_queue * |
1792 | meta_queue_new (void) | |
e96f9203 DO |
1793 | { |
1794 | struct meta_queue *new; | |
5110a0c6 SH |
1795 | unsigned i; |
1796 | ||
1797 | new = XCALLOC (MTYPE_WORK_QUEUE, sizeof (struct meta_queue)); | |
1798 | assert(new); | |
e96f9203 | 1799 | |
e96f9203 | 1800 | for (i = 0; i < MQ_SIZE; i++) |
5110a0c6 SH |
1801 | { |
1802 | new->subq[i] = list_new (); | |
1803 | assert(new->subq[i]); | |
1804 | } | |
1805 | ||
e96f9203 DO |
1806 | return new; |
1807 | } | |
1808 | ||
4d38fdb4 | 1809 | /* initialise zebra rib work queue */ |
a1ac18c4 | 1810 | static void |
4d38fdb4 | 1811 | rib_queue_init (struct zebra_t *zebra) |
1812 | { | |
fc328ac9 SV |
1813 | assert (zebra); |
1814 | ||
4d38fdb4 | 1815 | if (! (zebra->ribq = work_queue_new (zebra->master, |
6d691129 | 1816 | "route_node processing"))) |
4d38fdb4 | 1817 | { |
6d691129 | 1818 | zlog_err ("%s: could not initialise work queue!", __func__); |
4d38fdb4 | 1819 | return; |
1820 | } | |
1821 | ||
1822 | /* fill in the work queue spec */ | |
e96f9203 | 1823 | zebra->ribq->spec.workfunc = &meta_queue_process; |
4d38fdb4 | 1824 | zebra->ribq->spec.errorfunc = NULL; |
fb018d25 | 1825 | zebra->ribq->spec.completion_func = &meta_queue_process_complete; |
4d38fdb4 | 1826 | /* XXX: TODO: These should be runtime configurable via vty */ |
1827 | zebra->ribq->spec.max_retries = 3; | |
457eb9af | 1828 | zebra->ribq->spec.hold = rib_process_hold_time; |
4d38fdb4 | 1829 | |
e96f9203 | 1830 | if (!(zebra->mq = meta_queue_new ())) |
fc328ac9 | 1831 | { |
e96f9203 | 1832 | zlog_err ("%s: could not initialise meta queue!", __func__); |
fc328ac9 SV |
1833 | return; |
1834 | } | |
1835 | return; | |
718e3744 | 1836 | } |
1837 | ||
6d691129 PJ |
1838 | /* RIB updates are processed via a queue of pointers to route_nodes. |
1839 | * | |
1840 | * The queue length is bounded by the maximal size of the routing table, | |
1841 | * as a route_node will not be requeued, if already queued. | |
1842 | * | |
3c0755dc | 1843 | * RIBs are submitted via rib_addnode or rib_delnode which set minimal |
bcd548ff | 1844 | * state, or static_install_route (when an existing RIB is updated) |
3c0755dc PJ |
1845 | * and then submit route_node to queue for best-path selection later. |
1846 | * Order of add/delete state changes are preserved for any given RIB. | |
6d691129 PJ |
1847 | * |
1848 | * Deleted RIBs are reaped during best-path selection. | |
1849 | * | |
1850 | * rib_addnode | |
1851 | * |-> rib_link or unset RIB_ENTRY_REMOVE |->Update kernel with | |
3c0755dc PJ |
1852 | * |-------->| | best RIB, if required |
1853 | * | | | |
1854 | * static_install->|->rib_addqueue...... -> rib_process | |
1855 | * | | | |
1856 | * |-------->| |-> rib_unlink | |
6d691129 PJ |
1857 | * |-> set RIB_ENTRY_REMOVE | |
1858 | * rib_delnode (RIB freed) | |
1859 | * | |
9fd92e3c AS |
1860 | * The 'info' pointer of a route_node points to a rib_dest_t |
1861 | * ('dest'). Queueing state for a route_node is kept on the dest. The | |
1862 | * dest is created on-demand by rib_link() and is kept around at least | |
1863 | * as long as there are ribs hanging off it (@see rib_gc_dest()). | |
6d691129 PJ |
1864 | * |
1865 | * Refcounting (aka "locking" throughout the GNU Zebra and Quagga code): | |
1866 | * | |
1867 | * - route_nodes: refcounted by: | |
9fd92e3c AS |
1868 | * - dest attached to route_node: |
1869 | * - managed by: rib_link/rib_gc_dest | |
6d691129 PJ |
1870 | * - route_node processing queue |
1871 | * - managed by: rib_addqueue, rib_process. | |
1872 | * | |
1873 | */ | |
1874 | ||
718e3744 | 1875 | /* Add RIB to head of the route node. */ |
a1ac18c4 | 1876 | static void |
2bf26d41 | 1877 | rib_link (struct route_node *rn, struct rib *rib, int process) |
718e3744 | 1878 | { |
1879 | struct rib *head; | |
9fd92e3c | 1880 | rib_dest_t *dest; |
f304cb48 | 1881 | char buf[INET6_ADDRSTRLEN]; |
7a4bb9c5 | 1882 | afi_t afi; |
9fd92e3c | 1883 | |
4d38fdb4 | 1884 | assert (rib && rn); |
1885 | ||
9fd92e3c AS |
1886 | dest = rib_dest_from_rnode (rn); |
1887 | if (!dest) | |
6d691129 | 1888 | { |
41ec9222 | 1889 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) |
9fd92e3c | 1890 | { |
41ec9222 | 1891 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN); |
1892 | zlog_debug ("%u:%s/%d: rn %p adding dest", | |
1893 | rib->vrf_id, buf, rn->p.prefixlen, rn); | |
9fd92e3c AS |
1894 | } |
1895 | ||
1896 | dest = XCALLOC (MTYPE_RIB_DEST, sizeof (rib_dest_t)); | |
1897 | route_lock_node (rn); /* rn route table reference */ | |
1898 | rn->info = dest; | |
1899 | dest->rnode = rn; | |
1900 | } | |
1901 | ||
1902 | head = dest->routes; | |
1903 | if (head) | |
1904 | { | |
6d691129 | 1905 | head->prev = rib; |
6d691129 | 1906 | } |
718e3744 | 1907 | rib->next = head; |
9fd92e3c | 1908 | dest->routes = rib; |
7a4bb9c5 | 1909 | |
12f6fb97 DS |
1910 | afi = (rn->p.family == AF_INET) ? AFI_IP : |
1911 | (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
1912 | if (is_zebra_import_table_enabled (afi, rib->table)) | |
1913 | zebra_add_import_table_entry(rn, rib); | |
7a4bb9c5 | 1914 | else |
12f6fb97 | 1915 | if (process) |
44e9909d | 1916 | rib_queue_add (rn); |
718e3744 | 1917 | } |
1918 | ||
a1ac18c4 | 1919 | static void |
2bf26d41 | 1920 | rib_addnode (struct route_node *rn, struct rib *rib, int process) |
718e3744 | 1921 | { |
6d691129 PJ |
1922 | /* RIB node has been un-removed before route-node is processed. |
1923 | * route_node must hence already be on the queue for processing.. | |
1924 | */ | |
1925 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
1926 | { | |
6d691129 PJ |
1927 | UNSET_FLAG (rib->status, RIB_ENTRY_REMOVED); |
1928 | return; | |
1929 | } | |
2bf26d41 | 1930 | rib_link (rn, rib, process); |
6d691129 PJ |
1931 | } |
1932 | ||
9fd92e3c AS |
1933 | /* |
1934 | * rib_unlink | |
1935 | * | |
1936 | * Detach a rib structure from a route_node. | |
1937 | * | |
1938 | * Note that a call to rib_unlink() should be followed by a call to | |
1939 | * rib_gc_dest() at some point. This allows a rib_dest_t that is no | |
1940 | * longer required to be deleted. | |
1941 | */ | |
6d691129 PJ |
1942 | static void |
1943 | rib_unlink (struct route_node *rn, struct rib *rib) | |
1944 | { | |
9fd92e3c | 1945 | rib_dest_t *dest; |
6d691129 | 1946 | |
4d38fdb4 | 1947 | assert (rn && rib); |
6d691129 | 1948 | |
9fd92e3c AS |
1949 | dest = rib_dest_from_rnode (rn); |
1950 | ||
718e3744 | 1951 | if (rib->next) |
1952 | rib->next->prev = rib->prev; | |
6d691129 | 1953 | |
718e3744 | 1954 | if (rib->prev) |
1955 | rib->prev->next = rib->next; | |
1956 | else | |
6d691129 | 1957 | { |
9fd92e3c | 1958 | dest->routes = rib->next; |
6d691129 PJ |
1959 | } |
1960 | ||
1961 | /* free RIB and nexthops */ | |
d82ae0de | 1962 | zebra_deregister_rnh_static_nexthops (rib->vrf_id, rib->nexthop, rn); |
a399694f | 1963 | nexthops_free(rib->nexthop); |
6d691129 PJ |
1964 | XFREE (MTYPE_RIB, rib); |
1965 | ||
6d691129 PJ |
1966 | } |
1967 | ||
1968 | static void | |
1969 | rib_delnode (struct route_node *rn, struct rib *rib) | |
1970 | { | |
7a4bb9c5 DS |
1971 | afi_t afi; |
1972 | ||
6d691129 | 1973 | SET_FLAG (rib->status, RIB_ENTRY_REMOVED); |
7a4bb9c5 | 1974 | |
12f6fb97 DS |
1975 | afi = (rn->p.family == AF_INET) ? AFI_IP : |
1976 | (rn->p.family == AF_INET6) ? AFI_IP6 : AFI_MAX; | |
1977 | if (is_zebra_import_table_enabled (afi, rib->table)) | |
7a4bb9c5 | 1978 | { |
12f6fb97 | 1979 | zebra_del_import_table_entry(rn, rib); |
7a4bb9c5 | 1980 | /* Just clean up if non main table */ |
41ec9222 | 1981 | if (IS_ZEBRA_DEBUG_RIB) |
1982 | { | |
1983 | char buf[INET6_ADDRSTRLEN]; | |
1984 | if (IS_ZEBRA_DEBUG_RIB) | |
1985 | { | |
1986 | inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN); | |
1987 | zlog_debug ("%u:%s/%d: Freeing route rn %p, rib %p (type %d)", | |
1988 | rib->vrf_id, buf, rn->p.prefixlen, rn, rib, rib->type); | |
1989 | } | |
1990 | } | |
1991 | ||
7a4bb9c5 DS |
1992 | rib_unlink(rn, rib); |
1993 | } | |
12f6fb97 DS |
1994 | else |
1995 | { | |
44e9909d | 1996 | rib_queue_add (rn); |
12f6fb97 | 1997 | } |
718e3744 | 1998 | } |
1999 | ||
ca46a78e | 2000 | /* Lookup the routing table in a VRF based on both VRF-Id and table-id. |
2001 | * NOTE: Table-id is relevant only in the Default VRF. | |
2002 | */ | |
2003 | static struct route_table * | |
2004 | zebra_vrf_table_with_table_id (afi_t afi, safi_t safi, | |
2005 | vrf_id_t vrf_id, u_int32_t table_id) | |
2006 | { | |
2007 | struct route_table *table = NULL; | |
2008 | ||
2009 | if (afi >= AFI_MAX || safi >= SAFI_MAX) | |
2010 | return NULL; | |
2011 | ||
2012 | if (vrf_id == VRF_DEFAULT) | |
2013 | { | |
2014 | if (table_id == RT_TABLE_MAIN || | |
2015 | table_id == zebrad.rtm_table_default) | |
2016 | table = zebra_vrf_table (afi, safi, vrf_id); | |
2017 | else | |
2018 | table = zebra_vrf_other_route_table (afi, table_id, vrf_id); | |
2019 | } | |
2020 | else | |
2021 | table = zebra_vrf_table (afi, safi, vrf_id); | |
2022 | ||
2023 | return table; | |
2024 | } | |
2025 | ||
718e3744 | 2026 | int |
7c8ff89e | 2027 | rib_add_ipv4 (int type, u_short instance, int flags, struct prefix_ipv4 *p, |
7514fb77 | 2028 | struct in_addr *gate, struct in_addr *src, |
78104b9b | 2029 | unsigned int ifindex, vrf_id_t vrf_id, u_int32_t table_id, |
cddf391b | 2030 | u_int32_t metric, u_char distance, safi_t safi) |
718e3744 | 2031 | { |
2032 | struct rib *rib; | |
2033 | struct rib *same = NULL; | |
2034 | struct route_table *table; | |
2035 | struct route_node *rn; | |
2036 | struct nexthop *nexthop; | |
2037 | ||
2038 | /* Lookup table. */ | |
ca46a78e | 2039 | table = zebra_vrf_table_with_table_id (AFI_IP, safi, vrf_id, table_id); |
718e3744 | 2040 | if (! table) |
2041 | return 0; | |
2042 | ||
2043 | /* Make it sure prefixlen is applied to the prefix. */ | |
2044 | apply_mask_ipv4 (p); | |
2045 | ||
2046 | /* Set default distance by route type. */ | |
2047 | if (distance == 0) | |
2048 | { | |
837d16cc | 2049 | if ((unsigned)type >= array_size(route_info)) |
7052f228 DL |
2050 | distance = 150; |
2051 | else | |
2052 | distance = route_info[type].distance; | |
718e3744 | 2053 | |
2054 | /* iBGP distance is 200. */ | |
2055 | if (type == ZEBRA_ROUTE_BGP && CHECK_FLAG (flags, ZEBRA_FLAG_IBGP)) | |
2056 | distance = 200; | |
2057 | } | |
2058 | ||
2059 | /* Lookup route node.*/ | |
2060 | rn = route_node_get (table, (struct prefix *) p); | |
2061 | ||
2062 | /* If same type of route are installed, treat it as a implicit | |
2063 | withdraw. */ | |
9fd92e3c | 2064 | RNODE_FOREACH_RIB (rn, rib) |
718e3744 | 2065 | { |
6d691129 PJ |
2066 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
2067 | continue; | |
2068 | ||
ebf1ead0 | 2069 | if (rib->type != type) |
2070 | continue; | |
7c8ff89e DS |
2071 | if (rib->instance != instance) |
2072 | continue; | |
7a4bb9c5 | 2073 | |
ebf1ead0 | 2074 | if (rib->type != ZEBRA_ROUTE_CONNECT) |
4d38fdb4 | 2075 | { |
2076 | same = rib; | |
2077 | break; | |
2078 | } | |
ebf1ead0 | 2079 | /* Duplicate connected route comes in. */ |
2080 | else if ((nexthop = rib->nexthop) && | |
2081 | nexthop->type == NEXTHOP_TYPE_IFINDEX && | |
6d691129 PJ |
2082 | nexthop->ifindex == ifindex && |
2083 | !CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
ebf1ead0 | 2084 | { |
2085 | rib->refcnt++; | |
2086 | return 0 ; | |
2087 | } | |
718e3744 | 2088 | } |
2089 | ||
2090 | /* Allocate new rib structure. */ | |
4d38fdb4 | 2091 | rib = XCALLOC (MTYPE_RIB, sizeof (struct rib)); |
718e3744 | 2092 | rib->type = type; |
7c8ff89e | 2093 | rib->instance = instance; |
718e3744 | 2094 | rib->distance = distance; |
2095 | rib->flags = flags; | |
2096 | rib->metric = metric; | |
7a4bb9c5 | 2097 | rib->table = table_id; |
78104b9b | 2098 | rib->vrf_id = vrf_id; |
718e3744 | 2099 | rib->nexthop_num = 0; |
2100 | rib->uptime = time (NULL); | |
2101 | ||
2102 | /* Nexthop settings. */ | |
2103 | if (gate) | |
2104 | { | |
2105 | if (ifindex) | |
a399694f | 2106 | rib_nexthop_ipv4_ifindex_add (rib, gate, src, ifindex); |
718e3744 | 2107 | else |
a399694f | 2108 | rib_nexthop_ipv4_add (rib, gate, src); |
718e3744 | 2109 | } |
2110 | else | |
a399694f | 2111 | rib_nexthop_ifindex_add (rib, ifindex); |
718e3744 | 2112 | |
2113 | /* If this route is kernel route, set FIB flag to the route. */ | |
2114 | if (type == ZEBRA_ROUTE_KERNEL || type == ZEBRA_ROUTE_CONNECT) | |
2115 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
2116 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
2117 | ||
2118 | /* Link new rib to node.*/ | |
dc95824a | 2119 | if (IS_ZEBRA_DEBUG_RIB) |
41ec9222 | 2120 | { |
2121 | char buf[INET6_ADDRSTRLEN]; | |
2122 | if (IS_ZEBRA_DEBUG_RIB) | |
2123 | { | |
2124 | inet_ntop (p->family, &p->prefix, buf, INET6_ADDRSTRLEN); | |
2125 | zlog_debug ("%u:%s/%d: Inserting route rn %p, rib %p (type %d) " | |
2126 | "existing %p", | |
2127 | vrf_id, buf, p->prefixlen, rn, rib, rib->type, same); | |
2128 | } | |
2129 | ||
2130 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2131 | rib_dump ((struct prefix *)p, rib); | |
2132 | } | |
2bf26d41 | 2133 | rib_addnode (rn, rib, 1); |
4d38fdb4 | 2134 | |
718e3744 | 2135 | /* Free implicit route.*/ |
2136 | if (same) | |
4d38fdb4 | 2137 | rib_delnode (rn, same); |
2138 | ||
2139 | route_unlock_node (rn); | |
718e3744 | 2140 | return 0; |
2141 | } | |
2142 | ||
dc95824a DO |
2143 | /* This function dumps the contents of a given RIB entry into |
2144 | * standard debug log. Calling function name and IP prefix in | |
2145 | * question are passed as 1st and 2nd arguments. | |
2146 | */ | |
2147 | ||
f7bf4153 DL |
2148 | void _rib_dump (const char * func, |
2149 | union prefix46constptr pp, const struct rib * rib) | |
dc95824a | 2150 | { |
f7bf4153 | 2151 | const struct prefix *p = pp.p; |
4690c7d7 | 2152 | char straddr[PREFIX2STR_BUFFER]; |
fa713d9e CF |
2153 | struct nexthop *nexthop, *tnexthop; |
2154 | int recursing; | |
dc95824a | 2155 | |
78104b9b FL |
2156 | zlog_debug ("%s: dumping RIB entry %p for %s vrf %u", func, rib, |
2157 | prefix2str(pp, straddr, sizeof(straddr)), rib->vrf_id); | |
dc95824a DO |
2158 | zlog_debug |
2159 | ( | |
7c8ff89e | 2160 | "%s: refcnt == %lu, uptime == %lu, type == %u, instance == %d, table == %d", |
dc95824a DO |
2161 | func, |
2162 | rib->refcnt, | |
d02c56cd | 2163 | (unsigned long) rib->uptime, |
dc95824a | 2164 | rib->type, |
7c8ff89e | 2165 | rib->instance, |
dc95824a DO |
2166 | rib->table |
2167 | ); | |
2168 | zlog_debug | |
2169 | ( | |
2170 | "%s: metric == %u, distance == %u, flags == %u, status == %u", | |
2171 | func, | |
2172 | rib->metric, | |
2173 | rib->distance, | |
2174 | rib->flags, | |
2175 | rib->status | |
2176 | ); | |
2177 | zlog_debug | |
2178 | ( | |
2179 | "%s: nexthop_num == %u, nexthop_active_num == %u, nexthop_fib_num == %u", | |
2180 | func, | |
2181 | rib->nexthop_num, | |
2182 | rib->nexthop_active_num, | |
2183 | rib->nexthop_fib_num | |
2184 | ); | |
fed643f4 | 2185 | |
fa713d9e CF |
2186 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) |
2187 | { | |
fed643f4 | 2188 | inet_ntop (p->family, &nexthop->gate, straddr, INET6_ADDRSTRLEN); |
fa713d9e CF |
2189 | zlog_debug |
2190 | ( | |
2191 | "%s: %s %s with flags %s%s%s", | |
2192 | func, | |
2193 | (recursing ? " NH" : "NH"), | |
2194 | straddr, | |
2195 | (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE) ? "ACTIVE " : ""), | |
2196 | (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB) ? "FIB " : ""), | |
2197 | (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE) ? "RECURSIVE" : "") | |
2198 | ); | |
2199 | } | |
dc95824a DO |
2200 | zlog_debug ("%s: dump complete", func); |
2201 | } | |
2202 | ||
2203 | /* This is an exported helper to rtm_read() to dump the strange | |
2204 | * RIB entry found by rib_lookup_ipv4_route() | |
2205 | */ | |
2206 | ||
12f6fb97 | 2207 | void rib_lookup_and_dump (struct prefix_ipv4 * p, vrf_id_t vrf_id) |
dc95824a DO |
2208 | { |
2209 | struct route_table *table; | |
2210 | struct route_node *rn; | |
2211 | struct rib *rib; | |
2212 | char prefix_buf[INET_ADDRSTRLEN]; | |
2213 | ||
2214 | /* Lookup table. */ | |
12f6fb97 | 2215 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id); |
dc95824a DO |
2216 | if (! table) |
2217 | { | |
b72ede27 | 2218 | zlog_err ("%s: zebra_vrf_table() returned NULL", __func__); |
dc95824a DO |
2219 | return; |
2220 | } | |
2221 | ||
2222 | inet_ntop (AF_INET, &p->prefix.s_addr, prefix_buf, INET_ADDRSTRLEN); | |
2223 | /* Scan the RIB table for exactly matching RIB entry. */ | |
2224 | rn = route_node_lookup (table, (struct prefix *) p); | |
2225 | ||
2226 | /* No route for this prefix. */ | |
2227 | if (! rn) | |
2228 | { | |
2229 | zlog_debug ("%s: lookup failed for %s/%d", __func__, prefix_buf, p->prefixlen); | |
2230 | return; | |
2231 | } | |
2232 | ||
2233 | /* Unlock node. */ | |
2234 | route_unlock_node (rn); | |
2235 | ||
2236 | /* let's go */ | |
9fd92e3c | 2237 | RNODE_FOREACH_RIB (rn, rib) |
dc95824a DO |
2238 | { |
2239 | zlog_debug | |
2240 | ( | |
2241 | "%s: rn %p, rib %p: %s, %s", | |
2242 | __func__, | |
2243 | rn, | |
2244 | rib, | |
2245 | (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED) ? "removed" : "NOT removed"), | |
2246 | (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED) ? "selected" : "NOT selected") | |
2247 | ); | |
f7bf4153 | 2248 | rib_dump (p, rib); |
dc95824a DO |
2249 | } |
2250 | } | |
2251 | ||
20e5ff0a DO |
2252 | /* Check if requested address assignment will fail due to another |
2253 | * route being installed by zebra in FIB already. Take necessary | |
2254 | * actions, if needed: remove such a route from FIB and deSELECT | |
2255 | * corresponding RIB entry. Then put affected RN into RIBQ head. | |
2256 | */ | |
12f6fb97 | 2257 | void rib_lookup_and_pushup (struct prefix_ipv4 * p, vrf_id_t vrf_id) |
20e5ff0a DO |
2258 | { |
2259 | struct route_table *table; | |
2260 | struct route_node *rn; | |
2261 | struct rib *rib; | |
2262 | unsigned changed = 0; | |
2263 | ||
12f6fb97 | 2264 | if (NULL == (table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id))) |
20e5ff0a | 2265 | { |
b72ede27 | 2266 | zlog_err ("%s: zebra_vrf_table() returned NULL", __func__); |
20e5ff0a DO |
2267 | return; |
2268 | } | |
2269 | ||
2270 | /* No matches would be the simplest case. */ | |
2271 | if (NULL == (rn = route_node_lookup (table, (struct prefix *) p))) | |
2272 | return; | |
2273 | ||
2274 | /* Unlock node. */ | |
2275 | route_unlock_node (rn); | |
2276 | ||
2277 | /* Check all RIB entries. In case any changes have to be done, requeue | |
2278 | * the RN into RIBQ head. If the routing message about the new connected | |
2279 | * route (generated by the IP address we are going to assign very soon) | |
2280 | * comes before the RIBQ is processed, the new RIB entry will join | |
2281 | * RIBQ record already on head. This is necessary for proper revalidation | |
2282 | * of the rest of the RIB. | |
2283 | */ | |
9fd92e3c | 2284 | RNODE_FOREACH_RIB (rn, rib) |
20e5ff0a DO |
2285 | { |
2286 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED) && | |
2287 | ! RIB_SYSTEM_ROUTE (rib)) | |
2288 | { | |
2289 | changed = 1; | |
2290 | if (IS_ZEBRA_DEBUG_RIB) | |
2291 | { | |
2292 | char buf[INET_ADDRSTRLEN]; | |
2293 | inet_ntop (rn->p.family, &p->prefix, buf, INET_ADDRSTRLEN); | |
41ec9222 | 2294 | zlog_debug ("%u:%s/%d: freeing way for connected prefix", |
2295 | rib->vrf_id, buf, p->prefixlen); | |
f7bf4153 | 2296 | rib_dump (&rn->p, rib); |
20e5ff0a DO |
2297 | } |
2298 | rib_uninstall (rn, rib); | |
2299 | } | |
2300 | } | |
2301 | if (changed) | |
44e9909d | 2302 | rib_queue_add (rn); |
20e5ff0a DO |
2303 | } |
2304 | ||
718e3744 | 2305 | int |
cddf391b | 2306 | rib_add_ipv4_multipath (struct prefix_ipv4 *p, struct rib *rib, safi_t safi) |
718e3744 | 2307 | { |
2308 | struct route_table *table; | |
2309 | struct route_node *rn; | |
2310 | struct rib *same; | |
2311 | struct nexthop *nexthop; | |
04b02fda | 2312 | int ret = 0; |
4d38fdb4 | 2313 | |
718e3744 | 2314 | /* Lookup table. */ |
ca46a78e | 2315 | table = zebra_vrf_table_with_table_id (AFI_IP, safi, rib->vrf_id, rib->table); |
718e3744 | 2316 | if (! table) |
2317 | return 0; | |
cddf391b | 2318 | |
718e3744 | 2319 | /* Make it sure prefixlen is applied to the prefix. */ |
2320 | apply_mask_ipv4 (p); | |
2321 | ||
2322 | /* Set default distance by route type. */ | |
2323 | if (rib->distance == 0) | |
2324 | { | |
2325 | rib->distance = route_info[rib->type].distance; | |
2326 | ||
2327 | /* iBGP distance is 200. */ | |
2328 | if (rib->type == ZEBRA_ROUTE_BGP | |
2329 | && CHECK_FLAG (rib->flags, ZEBRA_FLAG_IBGP)) | |
2330 | rib->distance = 200; | |
2331 | } | |
2332 | ||
2333 | /* Lookup route node.*/ | |
2334 | rn = route_node_get (table, (struct prefix *) p); | |
2335 | ||
2336 | /* If same type of route are installed, treat it as a implicit | |
2337 | withdraw. */ | |
9fd92e3c | 2338 | RNODE_FOREACH_RIB (rn, same) |
718e3744 | 2339 | { |
0b8c4f1d | 2340 | if (CHECK_FLAG (same->status, RIB_ENTRY_REMOVED)) |
6d691129 PJ |
2341 | continue; |
2342 | ||
7c8ff89e DS |
2343 | if (same->type == rib->type && same->instance == rib->instance |
2344 | && same->table == rib->table | |
718e3744 | 2345 | && same->type != ZEBRA_ROUTE_CONNECT) |
4d38fdb4 | 2346 | break; |
718e3744 | 2347 | } |
4d38fdb4 | 2348 | |
718e3744 | 2349 | /* If this route is kernel route, set FIB flag to the route. */ |
2350 | if (rib->type == ZEBRA_ROUTE_KERNEL || rib->type == ZEBRA_ROUTE_CONNECT) | |
2351 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
2352 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
2353 | ||
2354 | /* Link new rib to node.*/ | |
41ec9222 | 2355 | if (IS_ZEBRA_DEBUG_RIB) |
2356 | { | |
2357 | char buf[INET6_ADDRSTRLEN]; | |
2358 | if (IS_ZEBRA_DEBUG_RIB) | |
2359 | { | |
2360 | inet_ntop (p->family, &p->prefix, buf, INET6_ADDRSTRLEN); | |
2361 | zlog_debug ("%u:%s/%d: Inserting route rn %p, rib %p (type %d) " | |
2362 | "existing %p", | |
2363 | rib->vrf_id, buf, p->prefixlen, rn, rib, rib->type, same); | |
2364 | } | |
2365 | ||
2366 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
2367 | rib_dump ((struct prefix *)p, rib); | |
2368 | } | |
2bf26d41 | 2369 | rib_addnode (rn, rib, 1); |
04b02fda | 2370 | ret = 1; |
718e3744 | 2371 | |
718e3744 | 2372 | /* Free implicit route.*/ |
2373 | if (same) | |
dc95824a | 2374 | { |
41ec9222 | 2375 | rib_delnode (rn, same); |
2376 | ret = -1; | |
dc95824a | 2377 | } |
4d38fdb4 | 2378 | |
2379 | route_unlock_node (rn); | |
04b02fda | 2380 | return ret; |
718e3744 | 2381 | } |
2382 | ||
ebf1ead0 | 2383 | /* XXX factor with rib_delete_ipv6 */ |
718e3744 | 2384 | int |
7c8ff89e | 2385 | rib_delete_ipv4 (int type, u_short instance, int flags, struct prefix_ipv4 *p, |
78104b9b | 2386 | struct in_addr *gate, unsigned int ifindex, vrf_id_t vrf_id, |
7a4bb9c5 | 2387 | u_int32_t table_id, safi_t safi) |
718e3744 | 2388 | { |
2389 | struct route_table *table; | |
2390 | struct route_node *rn; | |
2391 | struct rib *rib; | |
2392 | struct rib *fib = NULL; | |
2393 | struct rib *same = NULL; | |
fa713d9e CF |
2394 | struct nexthop *nexthop, *tnexthop; |
2395 | int recursing; | |
4690c7d7 | 2396 | char buf1[PREFIX2STR_BUFFER]; |
41ec9222 | 2397 | char buf2[INET6_ADDRSTRLEN]; |
718e3744 | 2398 | |
2399 | /* Lookup table. */ | |
ca46a78e | 2400 | table = zebra_vrf_table_with_table_id (AFI_IP, safi, vrf_id, table_id); |
718e3744 | 2401 | if (! table) |
2402 | return 0; | |
2403 | ||
2404 | /* Apply mask. */ | |
2405 | apply_mask_ipv4 (p); | |
2406 | ||
2407 | /* Lookup route node. */ | |
2408 | rn = route_node_lookup (table, (struct prefix *) p); | |
2409 | if (! rn) | |
2410 | { | |
41ec9222 | 2411 | if (IS_ZEBRA_DEBUG_RIB) |
2412 | zlog_debug ("%u:%s/%d: doesn't exist in rib", | |
2413 | vrf_id, inet_ntop (p->family, &p->prefix, buf1, INET6_ADDRSTRLEN), | |
2414 | p->prefixlen); | |
718e3744 | 2415 | return ZEBRA_ERR_RTNOEXIST; |
2416 | } | |
2417 | ||
2418 | /* Lookup same type route. */ | |
9fd92e3c | 2419 | RNODE_FOREACH_RIB (rn, rib) |
718e3744 | 2420 | { |
6d691129 PJ |
2421 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
2422 | continue; | |
2423 | ||
718e3744 | 2424 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
2425 | fib = rib; | |
2426 | ||
ebf1ead0 | 2427 | if (rib->type != type) |
2428 | continue; | |
7c8ff89e DS |
2429 | if (rib->instance != instance) |
2430 | continue; | |
ebf1ead0 | 2431 | if (rib->type == ZEBRA_ROUTE_CONNECT && (nexthop = rib->nexthop) && |
4f1735fd | 2432 | nexthop->type == NEXTHOP_TYPE_IFINDEX) |
718e3744 | 2433 | { |
4f1735fd MF |
2434 | if (nexthop->ifindex != ifindex) |
2435 | continue; | |
ebf1ead0 | 2436 | if (rib->refcnt) |
718e3744 | 2437 | { |
ebf1ead0 | 2438 | rib->refcnt--; |
2439 | route_unlock_node (rn); | |
2440 | route_unlock_node (rn); | |
2441 | return 0; | |
718e3744 | 2442 | } |
ebf1ead0 | 2443 | same = rib; |
2444 | break; | |
718e3744 | 2445 | } |
ebf1ead0 | 2446 | /* Make sure that the route found has the same gateway. */ |
fa713d9e | 2447 | else |
5ec90d28 | 2448 | { |
fa713d9e CF |
2449 | if (gate == NULL) |
2450 | { | |
2451 | same = rib; | |
2452 | break; | |
2453 | } | |
2454 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) | |
2455 | if (IPV4_ADDR_SAME (&nexthop->gate.ipv4, gate)) | |
2456 | { | |
2457 | same = rib; | |
2458 | break; | |
2459 | } | |
2460 | if (same) | |
2461 | break; | |
2462 | } | |
718e3744 | 2463 | } |
718e3744 | 2464 | /* If same type of route can't be found and this message is from |
2465 | kernel. */ | |
2466 | if (! same) | |
2467 | { | |
2037f143 DS |
2468 | if (fib && type == ZEBRA_ROUTE_KERNEL && |
2469 | CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE)) | |
2470 | { | |
41ec9222 | 2471 | if (IS_ZEBRA_DEBUG_RIB) |
2037f143 | 2472 | { |
41ec9222 | 2473 | zlog_debug ("%u:%s/%d: rn %p, rib %p (type %d) was deleted " |
2474 | "from kernel, adding", | |
2475 | vrf_id, inet_ntop (p->family, &p->prefix, buf1, INET6_ADDRSTRLEN), | |
2476 | p->prefixlen, rn, fib, fib->type); | |
2037f143 | 2477 | } |
6baf7bb8 DS |
2478 | if (allow_delete) |
2479 | { | |
2480 | /* Unset flags. */ | |
2481 | for (nexthop = fib->nexthop; nexthop; nexthop = nexthop->next) | |
2482 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
2483 | ||
2484 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | /* This means someone else, other than Zebra, has deleted | |
2489 | * a Zebra router from the kernel. We will add it back */ | |
2490 | rib_install_kernel(rn, fib, 0); | |
2491 | } | |
2037f143 | 2492 | } |
718e3744 | 2493 | else |
2494 | { | |
41ec9222 | 2495 | if (IS_ZEBRA_DEBUG_RIB) |
718e3744 | 2496 | { |
2497 | if (gate) | |
41ec9222 | 2498 | zlog_debug ("%u:%s: via %s ifindex %d type %d " |
78104b9b | 2499 | "doesn't exist in rib", |
41ec9222 | 2500 | vrf_id, prefix2str (p, buf1, sizeof(buf1)), |
81cce018 | 2501 | inet_ntop (AF_INET, gate, buf2, INET_ADDRSTRLEN), |
718e3744 | 2502 | ifindex, |
2503 | type); | |
2504 | else | |
41ec9222 | 2505 | zlog_debug ("%u:%s: ifindex %d type %d doesn't exist in rib", |
2506 | vrf_id, prefix2str (p, buf1, sizeof(buf1)), | |
718e3744 | 2507 | ifindex, |
2508 | type); | |
2509 | } | |
2510 | route_unlock_node (rn); | |
2511 | return ZEBRA_ERR_RTNOEXIST; | |
2512 | } | |
2513 | } | |
4d38fdb4 | 2514 | |
718e3744 | 2515 | if (same) |
4d38fdb4 | 2516 | rib_delnode (rn, same); |
2517 | ||
718e3744 | 2518 | route_unlock_node (rn); |
718e3744 | 2519 | return 0; |
2520 | } | |
6b0655a2 | 2521 | |
718e3744 | 2522 | /* Install static route into rib. */ |
a1ac18c4 | 2523 | static void |
bcd548ff | 2524 | static_install_route (afi_t afi, safi_t safi, struct prefix *p, struct static_route *si) |
718e3744 | 2525 | { |
2526 | struct rib *rib; | |
2527 | struct route_node *rn; | |
2528 | struct route_table *table; | |
6e26278c | 2529 | struct prefix nh_p; |
718e3744 | 2530 | |
2531 | /* Lookup table. */ | |
be5e48ab | 2532 | table = zebra_vrf_table (afi, safi, si->vrf_id); |
718e3744 | 2533 | if (! table) |
2534 | return; | |
2535 | ||
2536 | /* Lookup existing route */ | |
2537 | rn = route_node_get (table, p); | |
9fd92e3c | 2538 | RNODE_FOREACH_RIB (rn, rib) |
6d691129 PJ |
2539 | { |
2540 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
2541 | continue; | |
2542 | ||
2543 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance) | |
2544 | break; | |
2545 | } | |
718e3744 | 2546 | |
2547 | if (rib) | |
2548 | { | |
0d9551dc DS |
2549 | /* if tag value changed , update old value in RIB */ |
2550 | if (rib->tag != si->tag) | |
2551 | rib->tag = si->tag; | |
2552 | ||
718e3744 | 2553 | /* Same distance static route is there. Update it with new |
2554 | nexthop. */ | |
718e3744 | 2555 | route_unlock_node (rn); |
718e3744 | 2556 | switch (si->type) |
7021c425 | 2557 | { |
bcd548ff | 2558 | case STATIC_IPV4_GATEWAY: |
a399694f | 2559 | rib_nexthop_ipv4_add (rib, &si->addr.ipv4, NULL); |
bcd548ff DS |
2560 | nh_p.family = AF_INET; |
2561 | nh_p.prefixlen = IPV4_MAX_BITLEN; | |
2562 | nh_p.u.prefix4 = si->addr.ipv4; | |
d82ae0de | 2563 | zebra_register_rnh_static_nh(si->vrf_id, &nh_p, rn); |
bcd548ff | 2564 | break; |
ba779241 DS |
2565 | case STATIC_IFINDEX: |
2566 | rib_nexthop_ifindex_add (rib, si->ifindex); | |
bcd548ff DS |
2567 | break; |
2568 | case STATIC_IPV4_BLACKHOLE: | |
a399694f | 2569 | rib_nexthop_blackhole_add (rib); |
bcd548ff DS |
2570 | break; |
2571 | case STATIC_IPV6_GATEWAY: | |
a399694f | 2572 | rib_nexthop_ipv6_add (rib, &si->addr.ipv6); |
bcd548ff DS |
2573 | nh_p.family = AF_INET6; |
2574 | nh_p.prefixlen = IPV6_MAX_BITLEN; | |
2575 | nh_p.u.prefix6 = si->addr.ipv6; | |
d82ae0de | 2576 | zebra_register_rnh_static_nh(si->vrf_id, &nh_p, rn); |
bcd548ff | 2577 | break; |
ba779241 DS |
2578 | case STATIC_IPV6_GATEWAY_IFINDEX: |
2579 | rib_nexthop_ipv6_ifindex_add (rib, &si->addr.ipv6, si->ifindex); | |
bcd548ff | 2580 | break; |
4d38fdb4 | 2581 | } |
41ec9222 | 2582 | |
2583 | if (IS_ZEBRA_DEBUG_RIB) | |
2584 | { | |
2585 | char buf[INET6_ADDRSTRLEN]; | |
2586 | if (IS_ZEBRA_DEBUG_RIB) | |
2587 | { | |
2588 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN); | |
2589 | zlog_debug ("%u:%s/%d: Modifying route rn %p, rib %p (type %d)", | |
2590 | si->vrf_id, buf, p->prefixlen, rn, rib, rib->type); | |
2591 | } | |
2592 | } | |
2bf26d41 | 2593 | /* Schedule route for processing or invoke NHT, as appropriate. */ |
2594 | if (si->type == STATIC_IPV4_GATEWAY || | |
2595 | si->type == STATIC_IPV6_GATEWAY) | |
2596 | zebra_evaluate_rnh(si->vrf_id, nh_p.family, 1, RNH_NEXTHOP_TYPE, &nh_p); | |
2597 | else | |
44e9909d | 2598 | rib_queue_add (rn); |
718e3744 | 2599 | } |
2600 | else | |
2601 | { | |
2602 | /* This is new static route. */ | |
4d38fdb4 | 2603 | rib = XCALLOC (MTYPE_RIB, sizeof (struct rib)); |
2604 | ||
718e3744 | 2605 | rib->type = ZEBRA_ROUTE_STATIC; |
7c8ff89e | 2606 | rib->instance = 0; |
718e3744 | 2607 | rib->distance = si->distance; |
2608 | rib->metric = 0; | |
8f527c5e | 2609 | rib->vrf_id = si->vrf_id; |
12f6fb97 | 2610 | rib->table = si->vrf_id ? (zebra_vrf_lookup(si->vrf_id))->table_id : zebrad.rtm_table_default; |
718e3744 | 2611 | rib->nexthop_num = 0; |
0d9551dc | 2612 | rib->tag = si->tag; |
718e3744 | 2613 | |
2614 | switch (si->type) | |
7021c425 | 2615 | { |
bcd548ff | 2616 | case STATIC_IPV4_GATEWAY: |
a399694f | 2617 | rib_nexthop_ipv4_add (rib, &si->addr.ipv4, NULL); |
bcd548ff DS |
2618 | nh_p.family = AF_INET; |
2619 | nh_p.prefixlen = IPV4_MAX_BITLEN; | |
2620 | nh_p.u.prefix4 = si->addr.ipv4; | |
d82ae0de | 2621 | zebra_register_rnh_static_nh(si->vrf_id, &nh_p, rn); |
bcd548ff | 2622 | break; |
ba779241 DS |
2623 | case STATIC_IFINDEX: |
2624 | rib_nexthop_ifindex_add (rib, si->ifindex); | |
bcd548ff DS |
2625 | break; |
2626 | case STATIC_IPV4_BLACKHOLE: | |
a399694f | 2627 | rib_nexthop_blackhole_add (rib); |
bcd548ff DS |
2628 | break; |
2629 | case STATIC_IPV6_GATEWAY: | |
a399694f | 2630 | rib_nexthop_ipv6_add (rib, &si->addr.ipv6); |
bcd548ff DS |
2631 | nh_p.family = AF_INET6; |
2632 | nh_p.prefixlen = IPV6_MAX_BITLEN; | |
2633 | nh_p.u.prefix6 = si->addr.ipv6; | |
d82ae0de | 2634 | zebra_register_rnh_static_nh(si->vrf_id, &nh_p, rn); |
bcd548ff | 2635 | break; |
ba779241 DS |
2636 | case STATIC_IPV6_GATEWAY_IFINDEX: |
2637 | rib_nexthop_ipv6_ifindex_add (rib, &si->addr.ipv6, si->ifindex); | |
bcd548ff | 2638 | break; |
7021c425 | 2639 | } |
718e3744 | 2640 | |
81dfcaa2 | 2641 | /* Save the flags of this static routes (reject, blackhole) */ |
2642 | rib->flags = si->flags; | |
2643 | ||
41ec9222 | 2644 | if (IS_ZEBRA_DEBUG_RIB) |
2645 | { | |
2646 | char buf[INET6_ADDRSTRLEN]; | |
2647 | if (IS_ZEBRA_DEBUG_RIB) | |
2648 | { | |
2649 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN); | |
2650 | zlog_debug ("%u:%s/%d: Inserting route rn %p, rib %p (type %d)", | |
2651 | si->vrf_id, buf, p->prefixlen, rn, rib, rib->type); | |
2652 | } | |
2653 | } | |
2bf26d41 | 2654 | /* Link this rib to the tree. Schedule for processing or invoke NHT, |
2655 | * as appropriate. | |
2656 | */ | |
2657 | if (si->type == STATIC_IPV4_GATEWAY || | |
2658 | si->type == STATIC_IPV6_GATEWAY) | |
2659 | { | |
2660 | rib_addnode (rn, rib, 0); | |
2661 | zebra_evaluate_rnh(si->vrf_id, nh_p.family, 1, RNH_NEXTHOP_TYPE, &nh_p); | |
2662 | } | |
2663 | else | |
2664 | rib_addnode (rn, rib, 1); | |
718e3744 | 2665 | } |
2666 | } | |
2667 | ||
a1ac18c4 | 2668 | static int |
f2b49ed0 | 2669 | static_nexthop_same (struct nexthop *nexthop, struct static_route *si) |
718e3744 | 2670 | { |
2671 | if (nexthop->type == NEXTHOP_TYPE_IPV4 | |
2672 | && si->type == STATIC_IPV4_GATEWAY | |
c0551cbb | 2673 | && IPV4_ADDR_SAME (&nexthop->gate.ipv4, &si->addr.ipv4)) |
718e3744 | 2674 | return 1; |
ba779241 DS |
2675 | if (nexthop->type == NEXTHOP_TYPE_IFINDEX |
2676 | && si->type == STATIC_IFINDEX | |
2677 | && nexthop->ifindex == si->ifindex) | |
718e3744 | 2678 | return 1; |
595db7f1 | 2679 | if (nexthop->type == NEXTHOP_TYPE_BLACKHOLE |
2680 | && si->type == STATIC_IPV4_BLACKHOLE) | |
2681 | return 1; | |
f2b49ed0 DS |
2682 | if (nexthop->type == NEXTHOP_TYPE_IPV6 |
2683 | && si->type == STATIC_IPV6_GATEWAY | |
2684 | && IPV6_ADDR_SAME (&nexthop->gate.ipv6, &si->addr.ipv6)) | |
2685 | return 1; | |
ba779241 DS |
2686 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX |
2687 | && si->type == STATIC_IPV6_GATEWAY_IFINDEX | |
f2b49ed0 | 2688 | && IPV6_ADDR_SAME (&nexthop->gate.ipv6, &si->addr.ipv6) |
ba779241 | 2689 | && nexthop->ifindex == si->ifindex) |
f2b49ed0 | 2690 | return 1; |
e8e1946e | 2691 | return 0; |
718e3744 | 2692 | } |
2693 | ||
2694 | /* Uninstall static route from RIB. */ | |
a1ac18c4 | 2695 | static void |
b8a1effa | 2696 | static_uninstall_route (afi_t afi, safi_t safi, struct prefix *p, struct static_route *si) |
718e3744 | 2697 | { |
2698 | struct route_node *rn; | |
2699 | struct rib *rib; | |
2700 | struct nexthop *nexthop; | |
2701 | struct route_table *table; | |
6e26278c | 2702 | struct prefix nh_p; |
718e3744 | 2703 | |
2704 | /* Lookup table. */ | |
be5e48ab | 2705 | table = zebra_vrf_table (afi, safi, si->vrf_id); |
718e3744 | 2706 | if (! table) |
2707 | return; | |
4d38fdb4 | 2708 | |
718e3744 | 2709 | /* Lookup existing route with type and distance. */ |
2710 | rn = route_node_lookup (table, p); | |
2711 | if (! rn) | |
2712 | return; | |
2713 | ||
9fd92e3c | 2714 | RNODE_FOREACH_RIB (rn, rib) |
6d691129 PJ |
2715 | { |
2716 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) | |
2717 | continue; | |
2718 | ||
0d9551dc DS |
2719 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance && |
2720 | rib->tag == si->tag) | |
6d691129 PJ |
2721 | break; |
2722 | } | |
718e3744 | 2723 | |
2724 | if (! rib) | |
2725 | { | |
2726 | route_unlock_node (rn); | |
2727 | return; | |
2728 | } | |
2729 | ||
2730 | /* Lookup nexthop. */ | |
2731 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
f2b49ed0 | 2732 | if (static_nexthop_same (nexthop, si)) |
718e3744 | 2733 | break; |
2734 | ||
2735 | /* Can't find nexthop. */ | |
2736 | if (! nexthop) | |
2737 | { | |
2738 | route_unlock_node (rn); | |
2739 | return; | |
2740 | } | |
2741 | ||
2742 | /* Check nexthop. */ | |
2743 | if (rib->nexthop_num == 1) | |
6d691129 | 2744 | rib_delnode (rn, rib); |
718e3744 | 2745 | else |
2746 | { | |
94ad353d DS |
2747 | /* Mark this nexthop as inactive and reinstall the route. Then, delete |
2748 | * the nexthop. There is no need to re-evaluate the route for this | |
2749 | * scenario. | |
2750 | */ | |
41ec9222 | 2751 | if (IS_ZEBRA_DEBUG_RIB) |
2752 | { | |
2753 | char buf[INET6_ADDRSTRLEN]; | |
2754 | if (IS_ZEBRA_DEBUG_RIB) | |
2755 | { | |
2756 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN); | |
2757 | zlog_debug ("%u:%s/%d: Modifying route rn %p, rib %p (type %d)", | |
2758 | si->vrf_id, buf, p->prefixlen, rn, rib, rib->type); | |
2759 | } | |
2760 | } | |
94ad353d | 2761 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
6baeb988 | 2762 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
94ad353d | 2763 | { |
dccc5225 | 2764 | /* If there are other active nexthops, do an update. */ |
2765 | if (rib->nexthop_active_num > 1) | |
2766 | { | |
2767 | rib_install_kernel (rn, rib, 1); | |
2768 | redistribute_update (&rn->p, rib, NULL); | |
2769 | } | |
2770 | else | |
2771 | { | |
2772 | redistribute_delete (&rn->p, rib); | |
2773 | rib_uninstall_kernel (rn, rib); | |
2774 | } | |
94ad353d | 2775 | } |
6e26278c | 2776 | |
b8a1effa DS |
2777 | if (afi == AFI_IP) |
2778 | { | |
2779 | /* Delete the nexthop and dereg from NHT */ | |
2780 | nh_p.family = AF_INET; | |
2781 | nh_p.prefixlen = IPV4_MAX_BITLEN; | |
2782 | nh_p.u.prefix4 = nexthop->gate.ipv4; | |
2783 | } | |
2784 | else | |
2785 | { | |
2786 | nh_p.family = AF_INET6; | |
2787 | nh_p.prefixlen = IPV6_MAX_BITLEN; | |
2788 | nh_p.u.prefix6 = nexthop->gate.ipv6; | |
2789 | } | |
a399694f | 2790 | rib_nexthop_delete (rib, nexthop); |
d82ae0de | 2791 | zebra_deregister_rnh_static_nh(si->vrf_id, &nh_p, rn); |
a399694f | 2792 | nexthop_free (nexthop); |
718e3744 | 2793 | } |
718e3744 | 2794 | /* Unlock node. */ |
2795 | route_unlock_node (rn); | |
2796 | } | |
2797 | ||
2798 | /* Add static route into static route configuration. */ | |
2799 | int | |
ba779241 | 2800 | static_add_ipv4 (struct prefix *p, struct in_addr *gate, unsigned int ifindex, |
78104b9b | 2801 | u_char flags, u_short tag, u_char distance, vrf_id_t vrf_id) |
718e3744 | 2802 | { |
2803 | u_char type = 0; | |
2804 | struct route_node *rn; | |
c0551cbb DS |
2805 | struct static_route *si; |
2806 | struct static_route *pp; | |
2807 | struct static_route *cp; | |
2808 | struct static_route *update = NULL; | |
78104b9b FL |
2809 | struct zebra_vrf *zvrf = vrf_info_get (vrf_id); |
2810 | struct route_table *stable = zvrf->stable[AFI_IP][SAFI_UNICAST]; | |
718e3744 | 2811 | |
718e3744 | 2812 | if (! stable) |
2813 | return -1; | |
2814 | ||
2815 | /* Lookup static route prefix. */ | |
2816 | rn = route_node_get (stable, p); | |
2817 | ||
2818 | /* Make flags. */ | |
2819 | if (gate) | |
2820 | type = STATIC_IPV4_GATEWAY; | |
ba779241 DS |
2821 | else if (ifindex) |
2822 | type = STATIC_IFINDEX; | |
595db7f1 | 2823 | else |
2824 | type = STATIC_IPV4_BLACKHOLE; | |
718e3744 | 2825 | |
2826 | /* Do nothing if there is a same static route. */ | |
2827 | for (si = rn->info; si; si = si->next) | |
2828 | { | |
2829 | if (type == si->type | |
c0551cbb | 2830 | && (! gate || IPV4_ADDR_SAME (gate, &si->addr.ipv4)) |
ba779241 | 2831 | && (! ifindex || ifindex == si->ifindex)) |
718e3744 | 2832 | { |
0d9551dc | 2833 | if ((distance == si->distance) && (tag == si->tag)) |
718e3744 | 2834 | { |
2835 | route_unlock_node (rn); | |
2836 | return 0; | |
2837 | } | |
2838 | else | |
2839 | update = si; | |
2840 | } | |
2841 | } | |
2842 | ||
0d9551dc | 2843 | /* Distance or tag changed. */ |
718e3744 | 2844 | if (update) |
ba779241 | 2845 | static_delete_ipv4 (p, gate, ifindex, update->tag, update->distance, vrf_id); |
718e3744 | 2846 | |
2847 | /* Make new static route structure. */ | |
c0551cbb | 2848 | si = XCALLOC (MTYPE_STATIC_ROUTE, sizeof (struct static_route)); |
718e3744 | 2849 | |
2850 | si->type = type; | |
2851 | si->distance = distance; | |
81dfcaa2 | 2852 | si->flags = flags; |
0d9551dc | 2853 | si->tag = tag; |
8f527c5e | 2854 | si->vrf_id = vrf_id; |
ba779241 | 2855 | si->ifindex = ifindex; |
718e3744 | 2856 | |
2857 | if (gate) | |
c0551cbb | 2858 | si->addr.ipv4 = *gate; |
718e3744 | 2859 | |
2860 | /* Add new static route information to the tree with sort by | |
2861 | distance value and gateway address. */ | |
2862 | for (pp = NULL, cp = rn->info; cp; pp = cp, cp = cp->next) | |
2863 | { | |
2864 | if (si->distance < cp->distance) | |
2865 | break; | |
2866 | if (si->distance > cp->distance) | |
2867 | continue; | |
2868 | if (si->type == STATIC_IPV4_GATEWAY && cp->type == STATIC_IPV4_GATEWAY) | |
2869 | { | |
c0551cbb | 2870 | if (ntohl (si->addr.ipv4.s_addr) < ntohl (cp->addr.ipv4.s_addr)) |
718e3744 | 2871 | break; |
c0551cbb | 2872 | if (ntohl (si->addr.ipv4.s_addr) > ntohl (cp->addr.ipv4.s_addr)) |
718e3744 | 2873 | continue; |
2874 | } | |
2875 | } | |
2876 | ||
2877 | /* Make linked list. */ | |
2878 | if (pp) | |
2879 | pp->next = si; | |
2880 | else | |
2881 | rn->info = si; | |
2882 | if (cp) | |
2883 | cp->prev = si; | |
2884 | si->prev = pp; | |
2885 | si->next = cp; | |
2886 | ||
2887 | /* Install into rib. */ | |
bcd548ff | 2888 | static_install_route (AFI_IP, SAFI_UNICAST, p, si); |
718e3744 | 2889 | |
2890 | return 1; | |
2891 | } | |
2892 | ||
2893 | /* Delete static route from static route configuration. */ | |
2894 | int | |
ba779241 | 2895 | static_delete_ipv4 (struct prefix *p, struct in_addr *gate, unsigned int ifindex, |
78104b9b | 2896 | u_short tag, u_char distance, vrf_id_t vrf_id) |
718e3744 | 2897 | { |
2898 | u_char type = 0; | |
2899 | struct route_node *rn; | |
c0551cbb | 2900 | struct static_route *si; |
718e3744 | 2901 | struct route_table *stable; |
2902 | ||
2903 | /* Lookup table. */ | |
b72ede27 | 2904 | stable = zebra_vrf_static_table (AFI_IP, SAFI_UNICAST, vrf_id); |
718e3744 | 2905 | if (! stable) |
2906 | return -1; | |
2907 | ||
2908 | /* Lookup static route prefix. */ | |
2909 | rn = route_node_lookup (stable, p); | |
2910 | if (! rn) | |
2911 | return 0; | |
2912 | ||
2913 | /* Make flags. */ | |
2914 | if (gate) | |
2915 | type = STATIC_IPV4_GATEWAY; | |
ba779241 DS |
2916 | else if (ifindex) |
2917 | type = STATIC_IFINDEX; | |
595db7f1 | 2918 | else |
2919 | type = STATIC_IPV4_BLACKHOLE; | |
718e3744 | 2920 | |
2921 | /* Find same static route is the tree */ | |
2922 | for (si = rn->info; si; si = si->next) | |
2923 | if (type == si->type | |
c0551cbb | 2924 | && (! gate || IPV4_ADDR_SAME (gate, &si->addr.ipv4)) |
ba779241 | 2925 | && (! ifindex || ifindex == si->ifindex) |
0d9551dc | 2926 | && (! tag || (tag == si->tag))) |
718e3744 | 2927 | break; |
2928 | ||
2929 | /* Can't find static route. */ | |
2930 | if (! si) | |
2931 | { | |
2932 | route_unlock_node (rn); | |
2933 | return 0; | |
2934 | } | |
2935 | ||
2936 | /* Install into rib. */ | |
b8a1effa | 2937 | static_uninstall_route (AFI_IP, SAFI_UNICAST, p, si); |
718e3744 | 2938 | |
2939 | /* Unlink static route from linked list. */ | |
2940 | if (si->prev) | |
2941 | si->prev->next = si->next; | |
2942 | else | |
2943 | rn->info = si->next; | |
2944 | if (si->next) | |
2945 | si->next->prev = si->prev; | |
143a385f | 2946 | route_unlock_node (rn); |
718e3744 | 2947 | |
2948 | /* Free static route configuration. */ | |
c0551cbb | 2949 | XFREE (MTYPE_STATIC_ROUTE, si); |
718e3744 | 2950 | |
143a385f | 2951 | route_unlock_node (rn); |
2952 | ||
718e3744 | 2953 | return 1; |
2954 | } | |
2955 | ||
6b0655a2 | 2956 | |
718e3744 | 2957 | int |
7c8ff89e | 2958 | rib_add_ipv6 (int type, u_short instance, int flags, struct prefix_ipv6 *p, |
78104b9b FL |
2959 | struct in6_addr *gate, unsigned int ifindex, vrf_id_t vrf_id, |
2960 | u_int32_t table_id, u_int32_t metric, u_char distance, safi_t safi) | |
718e3744 | 2961 | { |
2962 | struct rib *rib; | |
2963 | struct rib *same = NULL; | |
2964 | struct route_table *table; | |
2965 | struct route_node *rn; | |
2966 | struct nexthop *nexthop; | |
2967 | ||
718e3744 | 2968 | /* Lookup table. */ |
ca46a78e | 2969 | table = zebra_vrf_table_with_table_id (AFI_IP6, safi, vrf_id, table_id); |
718e3744 | 2970 | if (! table) |
2971 | return 0; | |
2972 | ||
2973 | /* Make sure mask is applied. */ | |
2974 | apply_mask_ipv6 (p); | |
2975 | ||
2976 | /* Set default distance by route type. */ | |
be61c4eb | 2977 | if (!distance) |
2978 | distance = route_info[type].distance; | |
718e3744 | 2979 | |
2980 | if (type == ZEBRA_ROUTE_BGP && CHECK_FLAG (flags, ZEBRA_FLAG_IBGP)) | |
2981 | distance = 200; | |
2982 | ||
718e3744 | 2983 | /* Lookup route node.*/ |
2984 | rn = route_node_get (table, (struct prefix *) p); | |
2985 | ||
2986 | /* If same type of route are installed, treat it as a implicit | |
2987 | withdraw. */ | |
9fd92e3c | 2988 | RNODE_FOREACH_RIB (rn, rib) |
718e3744 | 2989 | { |
6d691129 PJ |
2990 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
2991 | continue; | |
2992 | ||
ebf1ead0 | 2993 | if (rib->type != type) |
2994 | continue; | |
7c8ff89e DS |
2995 | if (rib->instance != instance) |
2996 | continue; | |
ebf1ead0 | 2997 | if (rib->type != ZEBRA_ROUTE_CONNECT) |
718e3744 | 2998 | { |
2999 | same = rib; | |
718e3744 | 3000 | break; |
3001 | } | |
ebf1ead0 | 3002 | else if ((nexthop = rib->nexthop) && |
3003 | nexthop->type == NEXTHOP_TYPE_IFINDEX && | |
3004 | nexthop->ifindex == ifindex) | |
3005 | { | |
3006 | rib->refcnt++; | |
3007 | return 0; | |
3008 | } | |
718e3744 | 3009 | } |
3010 | ||
3011 | /* Allocate new rib structure. */ | |
4d38fdb4 | 3012 | rib = XCALLOC (MTYPE_RIB, sizeof (struct rib)); |
3013 | ||
718e3744 | 3014 | rib->type = type; |
7c8ff89e | 3015 | rib->instance = instance; |
718e3744 | 3016 | rib->distance = distance; |
3017 | rib->flags = flags; | |
3018 | rib->metric = metric; | |
7a4bb9c5 | 3019 | rib->table = table_id; |
78104b9b | 3020 | rib->vrf_id = vrf_id; |
718e3744 | 3021 | rib->nexthop_num = 0; |
3022 | rib->uptime = time (NULL); | |
3023 | ||
3024 | /* Nexthop settings. */ | |
3025 | if (gate) | |
3026 | { | |
3027 | if (ifindex) | |
a399694f | 3028 | rib_nexthop_ipv6_ifindex_add (rib, gate, ifindex); |
718e3744 | 3029 | else |
a399694f | 3030 | rib_nexthop_ipv6_add (rib, gate); |
718e3744 | 3031 | } |
3032 | else | |
a399694f | 3033 | rib_nexthop_ifindex_add (rib, ifindex); |
718e3744 | 3034 | |
3035 | /* If this route is kernel route, set FIB flag to the route. */ | |
3036 | if (type == ZEBRA_ROUTE_KERNEL || type == ZEBRA_ROUTE_CONNECT) | |
3037 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
3038 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
3039 | ||
3040 | /* Link new rib to node.*/ | |
fed643f4 | 3041 | if (IS_ZEBRA_DEBUG_RIB) |
41ec9222 | 3042 | { |
3043 | char buf[INET6_ADDRSTRLEN]; | |
3044 | if (IS_ZEBRA_DEBUG_RIB) | |
3045 | { | |
3046 | inet_ntop (p->family, &p->prefix, buf, INET6_ADDRSTRLEN); | |
3047 | zlog_debug ("%u:%s/%d: Inserting route rn %p, rib %p (type %d) " | |
3048 | "existing %p", | |
3049 | vrf_id, buf, p->prefixlen, rn, rib, rib->type, same); | |
3050 | } | |
3051 | ||
3052 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3053 | rib_dump ((struct prefix *)p, rib); | |
3054 | } | |
2bf26d41 | 3055 | rib_addnode (rn, rib, 1); |
718e3744 | 3056 | |
718e3744 | 3057 | /* Free implicit route.*/ |
3058 | if (same) | |
4d38fdb4 | 3059 | rib_delnode (rn, same); |
3060 | ||
3061 | route_unlock_node (rn); | |
718e3744 | 3062 | return 0; |
3063 | } | |
3064 | ||
41fc2714 | 3065 | int |
8a92a8a0 | 3066 | rib_add_ipv6_multipath (struct prefix *p, struct rib *rib, safi_t safi, |
41fc2714 DS |
3067 | unsigned long ifindex) |
3068 | { | |
3069 | struct route_table *table; | |
3070 | struct route_node *rn; | |
3071 | struct rib *same = NULL; | |
3072 | struct nexthop *nexthop; | |
3073 | int ret = 0; | |
154caaed | 3074 | int family; |
3075 | ||
3076 | if (!rib) | |
3077 | return 0; | |
41fc2714 | 3078 | |
8a92a8a0 | 3079 | if (p->family == AF_INET) |
154caaed | 3080 | family = AFI_IP; |
3081 | else | |
3082 | family = AFI_IP6; | |
8a92a8a0 | 3083 | |
154caaed | 3084 | /* Lookup table. */ |
3085 | table = zebra_vrf_table_with_table_id (family, safi, rib->vrf_id, rib->table); | |
3086 | if (! table) | |
3087 | return 0; | |
3088 | ||
3089 | if (p->family == AF_INET) | |
3090 | { | |
8a92a8a0 | 3091 | /* Make it sure prefixlen is applied to the prefix. */ |
88177fe3 | 3092 | apply_mask_ipv4 ((struct prefix_ipv4 *)p); |
7a4bb9c5 DS |
3093 | } |
3094 | else | |
3095 | { | |
8a92a8a0 | 3096 | /* Make sure mask is applied. */ |
88177fe3 | 3097 | apply_mask_ipv6 ((struct prefix_ipv6 *)p); |
8a92a8a0 | 3098 | } |
41fc2714 DS |
3099 | |
3100 | /* Set default distance by route type. */ | |
3101 | if (rib->distance == 0) | |
3102 | { | |
3103 | rib->distance = route_info[rib->type].distance; | |
3104 | ||
3105 | /* iBGP distance is 200. */ | |
3106 | if (rib->type == ZEBRA_ROUTE_BGP | |
3107 | && CHECK_FLAG (rib->flags, ZEBRA_FLAG_IBGP)) | |
3108 | rib->distance = 200; | |
3109 | } | |
3110 | ||
3111 | /* Lookup route node.*/ | |
3112 | rn = route_node_get (table, (struct prefix *) p); | |
3113 | ||
3114 | /* If same type of route are installed, treat it as a implicit | |
3115 | withdraw. */ | |
3116 | RNODE_FOREACH_RIB (rn, same) { | |
3117 | if (CHECK_FLAG (same->status, RIB_ENTRY_REMOVED)) { | |
3118 | continue; | |
3119 | } | |
3120 | if (same->type != rib->type) { | |
3121 | continue; | |
3122 | } | |
3123 | ||
7c8ff89e DS |
3124 | if (same->instance != rib->instance) { |
3125 | continue; | |
3126 | } | |
3127 | ||
41fc2714 DS |
3128 | if (same->table != rib->table) { |
3129 | continue; | |
3130 | } | |
3131 | if (same->type != ZEBRA_ROUTE_CONNECT) { | |
3132 | break; | |
3133 | } | |
3134 | else if ((nexthop = same->nexthop) && | |
3135 | nexthop->type == NEXTHOP_TYPE_IFINDEX && | |
3136 | nexthop->ifindex == ifindex) { | |
3137 | same->refcnt++; | |
3138 | return 0; | |
3139 | } | |
3140 | } | |
3141 | ||
3142 | /* If this route is kernel route, set FIB flag to the route. */ | |
3143 | if (rib->type == ZEBRA_ROUTE_KERNEL || rib->type == ZEBRA_ROUTE_CONNECT) { | |
3144 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) { | |
3145 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
3146 | } | |
3147 | } | |
3148 | ||
3149 | /* Link new rib to node.*/ | |
41ec9222 | 3150 | if (IS_ZEBRA_DEBUG_RIB) |
3151 | { | |
3152 | char buf[INET6_ADDRSTRLEN]; | |
3153 | if (IS_ZEBRA_DEBUG_RIB) | |
3154 | { | |
3155 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN); | |
3156 | zlog_debug ("%u:%s/%d: Inserting route rn %p, rib %p (type %d) " | |
3157 | "existing %p", | |
3158 | rib->vrf_id, buf, p->prefixlen, rn, rib, rib->type, same); | |
3159 | } | |
3160 | ||
3161 | if (IS_ZEBRA_DEBUG_RIB_DETAILED) | |
3162 | rib_dump ((struct prefix *)p, rib); | |
3163 | } | |
2bf26d41 | 3164 | rib_addnode (rn, rib, 1); |
41fc2714 | 3165 | ret = 1; |
41ec9222 | 3166 | |
41fc2714 DS |
3167 | /* Free implicit route.*/ |
3168 | if (same) | |
41fc2714 | 3169 | { |
41ec9222 | 3170 | rib_delnode (rn, same); |
3171 | ret = -1; | |
41fc2714 | 3172 | } |
41fc2714 DS |
3173 | |
3174 | route_unlock_node (rn); | |
3175 | return ret; | |
3176 | } | |
3177 | ||
ebf1ead0 | 3178 | /* XXX factor with rib_delete_ipv6 */ |
12f6fb97 | 3179 | |
718e3744 | 3180 | int |
7c8ff89e | 3181 | rib_delete_ipv6 (int type, u_short instance, int flags, struct prefix_ipv6 *p, |
78104b9b FL |
3182 | struct in6_addr *gate, unsigned int ifindex, vrf_id_t vrf_id, |
3183 | u_int32_t table_id, safi_t safi) | |
718e3744 | 3184 | { |
3185 | struct route_table *table; | |
3186 | struct route_node *rn; | |
3187 | struct rib *rib; | |
3188 | struct rib *fib = NULL; | |
3189 | struct rib *same = NULL; | |
fa713d9e CF |
3190 | struct nexthop *nexthop, *tnexthop; |
3191 | int recursing; | |
4690c7d7 | 3192 | char buf1[PREFIX2STR_BUFFER]; |
81cce018 | 3193 | char buf2[INET6_ADDRSTRLEN]; |
718e3744 | 3194 | |
3195 | /* Apply mask. */ | |
3196 | apply_mask_ipv6 (p); | |
3197 | ||
3198 | /* Lookup table. */ | |
ca46a78e | 3199 | table = zebra_vrf_table_with_table_id (AFI_IP6, safi, vrf_id, table_id); |
718e3744 | 3200 | if (! table) |
3201 | return 0; | |
4d38fdb4 | 3202 | |
718e3744 | 3203 | /* Lookup route node. */ |
3204 | rn = route_node_lookup (table, (struct prefix *) p); | |
3205 | if (! rn) | |
3206 | { | |
41ec9222 | 3207 | if (IS_ZEBRA_DEBUG_RIB) |
3208 | zlog_debug ("%u:%s/%d: doesn't exist in rib", | |
3209 | vrf_id, inet_ntop (p->family, &p->prefix, buf1, INET6_ADDRSTRLEN), | |
3210 | p->prefixlen); | |
718e3744 | 3211 | return ZEBRA_ERR_RTNOEXIST; |
3212 | } | |
3213 | ||
3214 | /* Lookup same type route. */ | |
9fd92e3c | 3215 | RNODE_FOREACH_RIB (rn, rib) |
718e3744 | 3216 | { |
6d691129 PJ |
3217 | if (CHECK_FLAG(rib->status, RIB_ENTRY_REMOVED)) |
3218 | continue; | |
3219 | ||
718e3744 | 3220 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
3221 | fib = rib; | |
3222 | ||
ebf1ead0 | 3223 | if (rib->type != type) |
3224 | continue; | |
7c8ff89e DS |
3225 | if (rib->instance != instance) |
3226 | continue; | |
ebf1ead0 | 3227 | if (rib->type == ZEBRA_ROUTE_CONNECT && (nexthop = rib->nexthop) && |
4f1735fd | 3228 | nexthop->type == NEXTHOP_TYPE_IFINDEX) |
718e3744 | 3229 | { |
4f1735fd MF |
3230 | if (nexthop->ifindex != ifindex) |
3231 | continue; | |
ebf1ead0 | 3232 | if (rib->refcnt) |
718e3744 | 3233 | { |
ebf1ead0 | 3234 | rib->refcnt--; |
3235 | route_unlock_node (rn); | |
3236 | route_unlock_node (rn); | |
3237 | return 0; | |
718e3744 | 3238 | } |
ebf1ead0 | 3239 | same = rib; |
3240 | break; | |
718e3744 | 3241 | } |
ebf1ead0 | 3242 | /* Make sure that the route found has the same gateway. */ |
fa713d9e CF |
3243 | else |
3244 | { | |
3245 | if (gate == NULL) | |
3246 | { | |
3247 | same = rib; | |
3248 | break; | |
3249 | } | |
3250 | for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) | |
3251 | if (IPV6_ADDR_SAME (&nexthop->gate.ipv6, gate)) | |
3252 | { | |
3253 | same = rib; | |
3254 | break; | |
3255 | } | |
3256 | if (same) | |
3257 | break; | |
3258 | } | |
718e3744 | 3259 | } |
3260 | ||
3261 | /* If same type of route can't be found and this message is from | |
3262 | kernel. */ | |
3263 | if (! same) | |
3264 | { | |
2037f143 DS |
3265 | if (fib && type == ZEBRA_ROUTE_KERNEL && |
3266 | CHECK_FLAG(flags, ZEBRA_FLAG_SELFROUTE)) | |
3267 | { | |
41ec9222 | 3268 | if (IS_ZEBRA_DEBUG_RIB) |
3269 | zlog_debug ("%u:%s/%d: rn %p, rib %p (type %d) was deleted " | |
3270 | "from kernel, adding", | |
3271 | vrf_id, inet_ntop (p->family, &p->prefix, buf1, INET6_ADDRSTRLEN), | |
3272 | p->prefixlen, rn, fib, fib->type); | |
6baf7bb8 DS |
3273 | if (allow_delete) |
3274 | { | |
3275 | /* Unset flags. */ | |
3276 | for (nexthop = fib->nexthop; nexthop; nexthop = nexthop->next) | |
3277 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); | |
3278 | ||
3279 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); | |
3280 | } | |
3281 | else | |
3282 | { | |
3283 | /* This means someone else, other than Zebra, has deleted a Zebra | |
3284 | * route from the kernel. We will add it back */ | |
3285 | rib_install_kernel(rn, fib, 0); | |
3286 | } | |
2037f143 | 3287 | } |
718e3744 | 3288 | else |
3289 | { | |
3290 | if (IS_ZEBRA_DEBUG_KERNEL) | |
3291 | { | |
3292 | if (gate) | |
41ec9222 | 3293 | zlog_debug ("%s: vrf %u via %s ifindex %d type %d " |
78104b9b FL |
3294 | "doesn't exist in rib", |
3295 | prefix2str (p, buf1, sizeof(buf1)), vrf_id, | |
81cce018 | 3296 | inet_ntop (AF_INET6, gate, buf2, INET6_ADDRSTRLEN), |
718e3744 | 3297 | ifindex, |
3298 | type); | |
3299 | else | |
41ec9222 | 3300 | zlog_debug ("%s: vrf %u ifindex %d type %d doesn't exist in rib", |
78104b9b | 3301 | prefix2str (p, buf1, sizeof(buf1)), vrf_id, |
718e3744 | 3302 | ifindex, |
3303 | type); | |
3304 | } | |
3305 | route_unlock_node (rn); | |
3306 | return ZEBRA_ERR_RTNOEXIST; | |
3307 | } | |
3308 | } | |
3309 | ||
718e3744 | 3310 | if (same) |
4d38fdb4 | 3311 | rib_delnode (rn, same); |
3312 | ||
718e3744 | 3313 | route_unlock_node (rn); |
718e3744 | 3314 | return 0; |
3315 | } | |
6b0655a2 | 3316 | |
718e3744 | 3317 | /* Add static route into static route configuration. */ |
3318 | int | |
3319 | static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, | |
ba779241 | 3320 | unsigned int ifindex, u_char flags, u_short tag, |
78104b9b | 3321 | u_char distance, vrf_id_t vrf_id) |
718e3744 | 3322 | { |
3323 | struct route_node *rn; | |
c0551cbb DS |
3324 | struct static_route *si; |
3325 | struct static_route *pp; | |
3326 | struct static_route *cp; | |
526e1728 | 3327 | struct static_route *update = NULL; |
78104b9b FL |
3328 | struct zebra_vrf *zvrf = vrf_info_get (vrf_id); |
3329 | struct route_table *stable = zvrf->stable[AFI_IP6][SAFI_UNICAST]; | |
718e3744 | 3330 | |
718e3744 | 3331 | if (! stable) |
3332 | return -1; | |
27b47253 PJ |
3333 | |
3334 | if (!gate && | |
ba779241 | 3335 | (type == STATIC_IPV6_GATEWAY || type == STATIC_IPV6_GATEWAY_IFINDEX)) |
27b47253 PJ |
3336 | return -1; |
3337 | ||
ba779241 DS |
3338 | if (!ifindex && |
3339 | (type == STATIC_IPV6_GATEWAY_IFINDEX || type == STATIC_IFINDEX)) | |
27b47253 | 3340 | return -1; |
718e3744 | 3341 | |
3342 | /* Lookup static route prefix. */ | |
3343 | rn = route_node_get (stable, p); | |
3344 | ||
3345 | /* Do nothing if there is a same static route. */ | |
3346 | for (si = rn->info; si; si = si->next) | |
3347 | { | |
526e1728 | 3348 | if (type == si->type |
c0551cbb | 3349 | && (! gate || IPV6_ADDR_SAME (gate, &si->addr.ipv6)) |
ba779241 | 3350 | && (! ifindex || ifindex == si->ifindex)) |
718e3744 | 3351 | { |
526e1728 DS |
3352 | if ((distance == si->distance) && (tag == si->tag)) |
3353 | { | |
3354 | route_unlock_node (rn); | |
3355 | return 0; | |
3356 | } | |
3357 | else | |
3358 | update = si; | |
718e3744 | 3359 | } |
3360 | } | |
3361 | ||
526e1728 DS |
3362 | /* Distance or tag changed. */ |
3363 | if (update) | |
ba779241 | 3364 | static_delete_ipv6 (p, type, gate, ifindex, update->tag, update->distance, vrf_id); |
526e1728 | 3365 | |
718e3744 | 3366 | /* Make new static route structure. */ |
c0551cbb | 3367 | si = XCALLOC (MTYPE_STATIC_ROUTE, sizeof (struct static_route)); |
718e3744 | 3368 | |
3369 | si->type = type; | |
3370 | si->distance = distance; | |
81dfcaa2 | 3371 | si->flags = flags; |
0d9551dc | 3372 | si->tag = tag; |
8f527c5e | 3373 | si->vrf_id = vrf_id; |
ba779241 | 3374 | si->ifindex = ifindex; |
718e3744 | 3375 | |
3376 | switch (type) | |
3377 | { | |
3378 | case STATIC_IPV6_GATEWAY: | |
c0551cbb | 3379 | si->addr.ipv6 = *gate; |
718e3744 | 3380 | break; |
ba779241 | 3381 | case STATIC_IPV6_GATEWAY_IFINDEX: |
c0551cbb | 3382 | si->addr.ipv6 = *gate; |
718e3744 | 3383 | break; |
3384 | } | |
3385 | ||
3386 | /* Add new static route information to the tree with sort by | |
3387 | distance value and gateway address. */ | |
3388 | for (pp = NULL, cp = rn->info; cp; pp = cp, cp = cp->next) | |
3389 | { | |
3390 | if (si->distance < cp->distance) | |
3391 | break; | |
3392 | if (si->distance > cp->distance) | |
3393 | continue; | |
3394 | } | |
3395 | ||
3396 | /* Make linked list. */ | |
3397 | if (pp) | |
3398 | pp->next = si; | |
3399 | else | |
3400 | rn->info = si; | |
3401 | if (cp) | |
3402 | cp->prev = si; | |
3403 | si->prev = pp; | |
3404 | si->next = cp; | |
3405 | ||
3406 | /* Install into rib. */ | |
bcd548ff | 3407 | static_install_route (AFI_IP6, SAFI_UNICAST, p, si); |
718e3744 | 3408 | |
3409 | return 1; | |
3410 | } | |
3411 | ||
3412 | /* Delete static route from static route configuration. */ | |
3413 | int | |
3414 | static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, | |
ba779241 | 3415 | unsigned int ifindex, u_short tag, u_char distance, |
78104b9b | 3416 | vrf_id_t vrf_id) |
718e3744 | 3417 | { |
3418 | struct route_node *rn; | |
c0551cbb | 3419 | struct static_route *si; |
718e3744 | 3420 | struct route_table *stable; |
3421 | ||
3422 | /* Lookup table. */ | |
b72ede27 | 3423 | stable = zebra_vrf_static_table (AFI_IP6, SAFI_UNICAST, vrf_id); |
718e3744 | 3424 | if (! stable) |
3425 | return -1; | |
3426 | ||
3427 | /* Lookup static route prefix. */ | |
3428 | rn = route_node_lookup (stable, p); | |
3429 | if (! rn) | |
3430 | return 0; | |
3431 | ||
3432 | /* Find same static route is the tree */ | |
3433 | for (si = rn->info; si; si = si->next) | |
3434 | if (distance == si->distance | |
3435 | && type == si->type | |
c0551cbb | 3436 | && (! gate || IPV6_ADDR_SAME (gate, &si->addr.ipv6)) |
ba779241 | 3437 | && (! ifindex || ifindex == si->ifindex) |
0d9551dc | 3438 | && (! tag || (tag == si->tag))) |
718e3744 | 3439 | break; |
3440 | ||
3441 | /* Can't find static route. */ | |
3442 | if (! si) | |
3443 | { | |
3444 | route_unlock_node (rn); | |
3445 | return 0; | |
3446 | } | |
3447 | ||
3448 | /* Install into rib. */ | |
b8a1effa | 3449 | static_uninstall_route (AFI_IP6, SAFI_UNICAST, p, si); |
718e3744 | 3450 | |
3451 | /* Unlink static route from linked list. */ | |
3452 | if (si->prev) | |
3453 | si->prev->next = si->next; | |
3454 | else | |
3455 | rn->info = si->next; | |
3456 | if (si->next) | |
3457 | si->next->prev = si->prev; | |
3458 | ||
3459 | /* Free static route configuration. */ | |
c0551cbb | 3460 | XFREE (MTYPE_STATIC_ROUTE, si); |
718e3744 | 3461 | |
3462 | return 1; | |
3463 | } | |
6b0655a2 | 3464 | |
1c848137 | 3465 | /* Schedule routes of a particular table (address-family) based on event. */ |
3466 | static void | |
3467 | rib_update_table (struct route_table *table, rib_update_event_t event) | |
b84c7253 | 3468 | { |
3469 | struct route_node *rn; | |
b84c7253 | 3470 | struct rib *rib, *next; |
3471 | ||
1c848137 | 3472 | /* Walk all routes and queue for processing, if appropriate for |
3473 | * the trigger event. | |
3474 | */ | |
3475 | for (rn = route_top (table); rn; rn = route_next (rn)) | |
3476 | { | |
3477 | switch (event) | |
3478 | { | |
3479 | case RIB_UPDATE_IF_CHANGE: | |
3480 | /* Examine all routes that won't get processed by the protocol or | |
3481 | * triggered by nexthop evaluation (NHT). This would be system, | |
3482 | * kernel and certain static routes. Note that NHT will get | |
3483 | * triggered upon an interface event as connected routes always | |
3484 | * get queued for processing. | |
3485 | */ | |
3486 | RNODE_FOREACH_RIB_SAFE (rn, rib, next) | |
3487 | { | |
3488 | if (rib->type == ZEBRA_ROUTE_OSPF || | |
3489 | rib->type == ZEBRA_ROUTE_OSPF6 || | |
3490 | rib->type == ZEBRA_ROUTE_BGP) | |
3491 | continue; /* protocol will handle. */ | |
3492 | else if (rib->type == ZEBRA_ROUTE_STATIC) | |
3493 | { | |
3494 | struct nexthop *nh; | |
3495 | for (nh = rib->nexthop; nh; nh = nh->next) | |
3496 | if (!(nh->type == NEXTHOP_TYPE_IPV4 || | |
3497 | nh->type == NEXTHOP_TYPE_IPV6)) | |
3498 | break; | |
3499 | ||
3500 | /* If we only have nexthops to a gateway, NHT will | |
3501 | * take care. | |
3502 | */ | |
3503 | if (nh) | |
44e9909d | 3504 | rib_queue_add (rn); |
1c848137 | 3505 | } |
3506 | else | |
44e9909d | 3507 | rib_queue_add (rn); |
1c848137 | 3508 | } |
3509 | break; | |
b84c7253 | 3510 | |
1c848137 | 3511 | case RIB_UPDATE_RMAP_CHANGE: |
3512 | case RIB_UPDATE_OTHER: | |
3513 | /* Right now, examine all routes. Can restrict to a protocol in | |
3514 | * some cases (TODO). | |
3515 | */ | |
3516 | if (rnode_to_ribs (rn)) | |
44e9909d | 3517 | rib_queue_add (rn); |
1c848137 | 3518 | break; |
3519 | ||
3520 | default: | |
3521 | break; | |
3522 | } | |
3523 | } | |
b84c7253 | 3524 | } |
3525 | ||
718e3744 | 3526 | /* RIB update function. */ |
3527 | void | |
1c848137 | 3528 | rib_update (vrf_id_t vrf_id, rib_update_event_t event) |
718e3744 | 3529 | { |
718e3744 | 3530 | struct route_table *table; |
1c848137 | 3531 | |
3532 | /* Process routes of interested address-families. */ | |
78104b9b | 3533 | table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, vrf_id); |
718e3744 | 3534 | if (table) |
1c848137 | 3535 | rib_update_table (table, event); |
718e3744 | 3536 | |
78104b9b | 3537 | table = zebra_vrf_table (AFI_IP6, SAFI_UNICAST, vrf_id); |
718e3744 | 3538 | if (table) |
1c848137 | 3539 | rib_update_table (table, event); |
718e3744 | 3540 | } |
3541 | ||
718e3744 | 3542 | /* Remove all routes which comes from non main table. */ |
a1ac18c4 | 3543 | static void |
718e3744 | 3544 | rib_weed_table (struct route_table *table) |
3545 | { | |
3546 | struct route_node *rn; | |
3547 | struct rib *rib; | |
3548 | struct rib *next; | |
3549 | ||
3550 | if (table) | |
3551 | for (rn = route_top (table); rn; rn = route_next (rn)) | |
9fd92e3c | 3552 | RNODE_FOREACH_RIB_SAFE (rn, rib, next) |
718e3744 | 3553 | { |
6d691129 PJ |
3554 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
3555 | continue; | |
3556 | ||
b21b19c5 | 3557 | if (rib->table != zebrad.rtm_table_default && |
718e3744 | 3558 | rib->table != RT_TABLE_MAIN) |
4d38fdb4 | 3559 | rib_delnode (rn, rib); |
718e3744 | 3560 | } |
3561 | } | |
3562 | ||
3563 | /* Delete all routes from non main table. */ | |
3564 | void | |
a1ac18c4 | 3565 | rib_weed_tables (void) |
718e3744 | 3566 | { |
78104b9b FL |
3567 | vrf_iter_t iter; |
3568 | struct zebra_vrf *zvrf; | |
3569 | ||
3570 | for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter)) | |
3571 | if ((zvrf = vrf_iter2info (iter)) != NULL) | |
3572 | { | |
3573 | rib_weed_table (zvrf->table[AFI_IP][SAFI_UNICAST]); | |
3574 | rib_weed_table (zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
3575 | } | |
718e3744 | 3576 | } |
6b0655a2 | 3577 | |
718e3744 | 3578 | /* Delete self installed routes after zebra is relaunched. */ |
a1ac18c4 | 3579 | static void |
718e3744 | 3580 | rib_sweep_table (struct route_table *table) |
3581 | { | |
3582 | struct route_node *rn; | |
3583 | struct rib *rib; | |
3584 | struct rib *next; | |
3585 | int ret = 0; | |
3586 | ||
3587 | if (table) | |
3588 | for (rn = route_top (table); rn; rn = route_next (rn)) | |
9fd92e3c | 3589 | RNODE_FOREACH_RIB_SAFE (rn, rib, next) |
718e3744 | 3590 | { |
6d691129 PJ |
3591 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
3592 | continue; | |
3593 | ||
718e3744 | 3594 | if (rib->type == ZEBRA_ROUTE_KERNEL && |
3595 | CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELFROUTE)) | |
3596 | { | |
3597 | ret = rib_uninstall_kernel (rn, rib); | |
3598 | if (! ret) | |
4d38fdb4 | 3599 | rib_delnode (rn, rib); |
718e3744 | 3600 | } |
3601 | } | |
3602 | } | |
3603 | ||
3604 | /* Sweep all RIB tables. */ | |
3605 | void | |
a1ac18c4 | 3606 | rib_sweep_route (void) |
718e3744 | 3607 | { |
78104b9b FL |
3608 | vrf_iter_t iter; |
3609 | struct zebra_vrf *zvrf; | |
3610 | ||
3611 | for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter)) | |
3612 | if ((zvrf = vrf_iter2info (iter)) != NULL) | |
3613 | { | |
3614 | rib_sweep_table (zvrf->table[AFI_IP][SAFI_UNICAST]); | |
3615 | rib_sweep_table (zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
3616 | } | |
718e3744 | 3617 | } |
2ea1ab1c VT |
3618 | |
3619 | /* Remove specific by protocol routes from 'table'. */ | |
3620 | static unsigned long | |
7c8ff89e | 3621 | rib_score_proto_table (u_char proto, u_short instance, struct route_table *table) |
2ea1ab1c VT |
3622 | { |
3623 | struct route_node *rn; | |
3624 | struct rib *rib; | |
3625 | struct rib *next; | |
3626 | unsigned long n = 0; | |
3627 | ||
3628 | if (table) | |
3629 | for (rn = route_top (table); rn; rn = route_next (rn)) | |
9fd92e3c | 3630 | RNODE_FOREACH_RIB_SAFE (rn, rib, next) |
2ea1ab1c | 3631 | { |
2ea1ab1c VT |
3632 | if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) |
3633 | continue; | |
7c8ff89e | 3634 | if (rib->type == proto && rib->instance == instance) |
2ea1ab1c VT |
3635 | { |
3636 | rib_delnode (rn, rib); | |
3637 | n++; | |
3638 | } | |
3639 | } | |
3640 | ||
3641 | return n; | |
3642 | } | |
3643 | ||
3644 | /* Remove specific by protocol routes. */ | |
3645 | unsigned long | |
7c8ff89e | 3646 | rib_score_proto (u_char proto, u_short instance) |
2ea1ab1c | 3647 | { |
78104b9b FL |
3648 | vrf_iter_t iter; |
3649 | struct zebra_vrf *zvrf; | |
3650 | unsigned long cnt = 0; | |
3651 | ||
3652 | for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter)) | |
3653 | if ((zvrf = vrf_iter2info (iter)) != NULL) | |
3654 | cnt += rib_score_proto_table (proto, instance, zvrf->table[AFI_IP][SAFI_UNICAST]) | |
3655 | +rib_score_proto_table (proto, instance, zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
3656 | ||
3657 | return cnt; | |
2ea1ab1c VT |
3658 | } |
3659 | ||
718e3744 | 3660 | /* Close RIB and clean up kernel routes. */ |
a31c5886 | 3661 | void |
718e3744 | 3662 | rib_close_table (struct route_table *table) |
3663 | { | |
3664 | struct route_node *rn; | |
3665 | struct rib *rib; | |
3666 | ||
3667 | if (table) | |
3668 | for (rn = route_top (table); rn; rn = route_next (rn)) | |
9fd92e3c | 3669 | RNODE_FOREACH_RIB (rn, rib) |
6d691129 | 3670 | { |
9fd92e3c AS |
3671 | if (!CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
3672 | continue; | |
3673 | ||
5adc2528 AS |
3674 | zfpm_trigger_update (rn, NULL); |
3675 | ||
9fd92e3c AS |
3676 | if (! RIB_SYSTEM_ROUTE (rib)) |
3677 | rib_uninstall_kernel (rn, rib); | |
6d691129 | 3678 | } |
718e3744 | 3679 | } |
3680 | ||
3681 | /* Close all RIB tables. */ | |
3682 | void | |
a1ac18c4 | 3683 | rib_close (void) |
718e3744 | 3684 | { |
78104b9b FL |
3685 | vrf_iter_t iter; |
3686 | struct zebra_vrf *zvrf; | |
3687 | struct listnode *node; | |
5c610faf | 3688 | struct interface *ifp; |
6678277c | 3689 | u_int32_t table_id; |
5c610faf | 3690 | |
78104b9b FL |
3691 | for (iter = vrf_first (); iter != VRF_ITER_INVALID; iter = vrf_next (iter)) |
3692 | { | |
3693 | if ((zvrf = vrf_iter2info (iter)) != NULL) | |
3694 | { | |
3695 | rib_close_table (zvrf->table[AFI_IP][SAFI_UNICAST]); | |
3696 | rib_close_table (zvrf->table[AFI_IP6][SAFI_UNICAST]); | |
3697 | } | |
3698 | for (ALL_LIST_ELEMENTS_RO (vrf_iter2iflist (iter), node, ifp)) | |
3699 | if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(ifp); | |
3700 | } | |
6678277c DS |
3701 | |
3702 | /* If we do multiple tables per vrf, need to move this to loop above */ | |
3703 | zvrf = vrf_info_lookup (VRF_DEFAULT); | |
3704 | ||
3705 | for (table_id = 0; table_id < ZEBRA_KERNEL_TABLE_MAX; table_id++) | |
3706 | { | |
3707 | if (zvrf->other_table[AFI_IP][table_id]) | |
3708 | rib_close_table (zvrf->other_table[AFI_IP][table_id]); | |
3709 | ||
3710 | if (zvrf->other_table[AFI_IP6][table_id]) | |
3711 | rib_close_table (zvrf->other_table[AFI_IP6][table_id]); | |
3712 | } | |
718e3744 | 3713 | } |
6b0655a2 | 3714 | |
718e3744 | 3715 | /* Routing information base initialize. */ |
3716 | void | |
a1ac18c4 | 3717 | rib_init (void) |
718e3744 | 3718 | { |
4d38fdb4 | 3719 | rib_queue_init (&zebrad); |
718e3744 | 3720 | } |
0915bb0c AS |
3721 | |
3722 | /* | |
3723 | * vrf_id_get_next | |
3724 | * | |
3725 | * Get the first vrf id that is greater than the given vrf id if any. | |
3726 | * | |
3727 | * Returns TRUE if a vrf id was found, FALSE otherwise. | |
3728 | */ | |
3729 | static inline int | |
b72ede27 | 3730 | vrf_id_get_next (vrf_id_t vrf_id, vrf_id_t *next_id_p) |
0915bb0c | 3731 | { |
b72ede27 FL |
3732 | vrf_iter_t iter = vrf_iterator (vrf_id); |
3733 | struct zebra_vrf *zvrf = vrf_iter2info (iter); | |
3734 | ||
3735 | /* The same one ? Then find out the next. */ | |
3736 | if (zvrf && (zvrf->vrf_id == vrf_id)) | |
3737 | zvrf = vrf_iter2info (vrf_next (iter)); | |
3738 | ||
3739 | if (zvrf) | |
0915bb0c | 3740 | { |
b72ede27 FL |
3741 | *next_id_p = zvrf->vrf_id; |
3742 | return 1; | |
0915bb0c AS |
3743 | } |
3744 | ||
3745 | return 0; | |
3746 | } | |
3747 | ||
3748 | /* | |
3749 | * rib_tables_iter_next | |
3750 | * | |
3751 | * Returns the next table in the iteration. | |
3752 | */ | |
3753 | struct route_table * | |
3754 | rib_tables_iter_next (rib_tables_iter_t *iter) | |
3755 | { | |
3756 | struct route_table *table; | |
3757 | ||
3758 | /* | |
3759 | * Array that helps us go over all AFI/SAFI combinations via one | |
3760 | * index. | |
3761 | */ | |
3762 | static struct { | |
3763 | afi_t afi; | |
3764 | safi_t safi; | |
3765 | } afi_safis[] = { | |
3766 | { AFI_IP, SAFI_UNICAST }, | |
3767 | { AFI_IP, SAFI_MULTICAST }, | |
3768 | { AFI_IP6, SAFI_UNICAST }, | |
3769 | { AFI_IP6, SAFI_MULTICAST }, | |
3770 | }; | |
3771 | ||
3772 | table = NULL; | |
3773 | ||
3774 | switch (iter->state) | |
3775 | { | |
3776 | ||
3777 | case RIB_TABLES_ITER_S_INIT: | |
9c2bf1cf | 3778 | iter->vrf_id = VRF_DEFAULT; |
0915bb0c AS |
3779 | iter->afi_safi_ix = -1; |
3780 | ||
3781 | /* Fall through */ | |
3782 | ||
3783 | case RIB_TABLES_ITER_S_ITERATING: | |
3784 | iter->afi_safi_ix++; | |
3785 | while (1) | |
3786 | { | |
3787 | ||
3788 | while (iter->afi_safi_ix < (int) ZEBRA_NUM_OF (afi_safis)) | |
3789 | { | |
b72ede27 | 3790 | table = zebra_vrf_table (afi_safis[iter->afi_safi_ix].afi, |
0915bb0c AS |
3791 | afi_safis[iter->afi_safi_ix].safi, |
3792 | iter->vrf_id); | |
3793 | if (table) | |
3794 | break; | |
3795 | ||
3796 | iter->afi_safi_ix++; | |
3797 | } | |
3798 | ||
3799 | /* | |
3800 | * Found another table in this vrf. | |
3801 | */ | |
3802 | if (table) | |
3803 | break; | |
3804 | ||
3805 | /* | |
3806 | * Done with all tables in the current vrf, go to the next | |
3807 | * one. | |
3808 | */ | |
3809 | if (!vrf_id_get_next (iter->vrf_id, &iter->vrf_id)) | |
3810 | break; | |
3811 | ||
3812 | iter->afi_safi_ix = 0; | |
3813 | } | |
3814 | ||
3815 | break; | |
3816 | ||
3817 | case RIB_TABLES_ITER_S_DONE: | |
3818 | return NULL; | |
3819 | } | |
3820 | ||
3821 | if (table) | |
3822 | iter->state = RIB_TABLES_ITER_S_ITERATING; | |
3823 | else | |
3824 | iter->state = RIB_TABLES_ITER_S_DONE; | |
3825 | ||
3826 | return table; | |
3827 | } | |
b72ede27 FL |
3828 | |
3829 | /* | |
3830 | * Create a routing table for the specific AFI/SAFI in the given VRF. | |
3831 | */ | |
3832 | static void | |
3833 | zebra_vrf_table_create (struct zebra_vrf *zvrf, afi_t afi, safi_t safi) | |
3834 | { | |
3835 | rib_table_info_t *info; | |
3836 | struct route_table *table; | |
3837 | ||
3838 | assert (!zvrf->table[afi][safi]); | |
3839 | ||
3840 | table = route_table_init (); | |
3841 | zvrf->table[afi][safi] = table; | |
3842 | ||
3843 | info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info)); | |
3844 | info->zvrf = zvrf; | |
3845 | info->afi = afi; | |
3846 | info->safi = safi; | |
3847 | table->info = info; | |
3848 | } | |
3849 | ||
3850 | /* Allocate new zebra VRF. */ | |
3851 | struct zebra_vrf * | |
12f6fb97 | 3852 | zebra_vrf_alloc (vrf_id_t vrf_id, const char *name) |
b72ede27 FL |
3853 | { |
3854 | struct zebra_vrf *zvrf; | |
3855 | ||
3856 | zvrf = XCALLOC (MTYPE_ZEBRA_VRF, sizeof (struct zebra_vrf)); | |
3857 | ||
3858 | /* Allocate routing table and static table. */ | |
3859 | zebra_vrf_table_create (zvrf, AFI_IP, SAFI_UNICAST); | |
3860 | zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_UNICAST); | |
3861 | zvrf->stable[AFI_IP][SAFI_UNICAST] = route_table_init (); | |
3862 | zvrf->stable[AFI_IP6][SAFI_UNICAST] = route_table_init (); | |
3863 | zebra_vrf_table_create (zvrf, AFI_IP, SAFI_MULTICAST); | |
3864 | zebra_vrf_table_create (zvrf, AFI_IP6, SAFI_MULTICAST); | |
3865 | zvrf->stable[AFI_IP][SAFI_MULTICAST] = route_table_init (); | |
3866 | zvrf->stable[AFI_IP6][SAFI_MULTICAST] = route_table_init (); | |
3867 | ||
3868 | zvrf->rnh_table[AFI_IP] = route_table_init(); | |
3869 | zvrf->rnh_table[AFI_IP6] = route_table_init(); | |
3870 | ||
3871 | zvrf->import_check_table[AFI_IP] = route_table_init(); | |
3872 | zvrf->import_check_table[AFI_IP6] = route_table_init(); | |
3873 | ||
3874 | /* Set VRF ID */ | |
3875 | zvrf->vrf_id = vrf_id; | |
3876 | ||
12f6fb97 DS |
3877 | if (name) |
3878 | { | |
3879 | strncpy (zvrf->name, name, strlen(name)); | |
3880 | zvrf->name[strlen(name)] = '\0'; | |
3881 | } | |
8f7d9fc0 | 3882 | |
b72ede27 FL |
3883 | return zvrf; |
3884 | } | |
3885 | ||
3886 | /* Lookup VRF by identifier. */ | |
3887 | struct zebra_vrf * | |
3888 | zebra_vrf_lookup (vrf_id_t vrf_id) | |
3889 | { | |
92955671 | 3890 | return vrf_info_lookup (vrf_id); |
b72ede27 FL |
3891 | } |
3892 | ||
3893 | /* Lookup the routing table in an enabled VRF. */ | |
3894 | struct route_table * | |
3895 | zebra_vrf_table (afi_t afi, safi_t safi, vrf_id_t vrf_id) | |
3896 | { | |
3897 | struct zebra_vrf *zvrf = vrf_info_lookup (vrf_id); | |
3898 | ||
3899 | if (!zvrf) | |
3900 | return NULL; | |
3901 | ||
3902 | if (afi >= AFI_MAX || safi >= SAFI_MAX) | |
3903 | return NULL; | |
3904 | ||
3905 | return zvrf->table[afi][safi]; | |
3906 | } | |
3907 | ||
3908 | /* Lookup the static routing table in a VRF. */ | |
3909 | struct route_table * | |
3910 | zebra_vrf_static_table (afi_t afi, safi_t safi, vrf_id_t vrf_id) | |
3911 | { | |
3912 | struct zebra_vrf *zvrf = vrf_info_lookup (vrf_id); | |
3913 | ||
3914 | if (!zvrf) | |
3915 | return NULL; | |
3916 | ||
3917 | if (afi >= AFI_MAX || safi >= SAFI_MAX) | |
3918 | return NULL; | |
3919 | ||
3920 | return zvrf->stable[afi][safi]; | |
3921 | } | |
3922 | ||
3923 | struct route_table * | |
3924 | zebra_vrf_other_route_table (afi_t afi, u_int32_t table_id, vrf_id_t vrf_id) | |
3925 | { | |
3926 | struct zebra_vrf *zvrf; | |
99a654bd | 3927 | rib_table_info_t *info; |
3928 | struct route_table *table; | |
b72ede27 FL |
3929 | |
3930 | zvrf = vrf_info_lookup (vrf_id); | |
3931 | if (! zvrf) | |
3932 | return NULL; | |
3933 | ||
3934 | if(afi >= AFI_MAX) | |
3935 | return NULL; | |
3936 | ||
3937 | if (table_id >= ZEBRA_KERNEL_TABLE_MAX) | |
3938 | return NULL; | |
3939 | ||
99a654bd | 3940 | if ((vrf_id == VRF_DEFAULT) && (table_id != RT_TABLE_MAIN) && (table_id != zebrad.rtm_table_default)) |
b72ede27 | 3941 | { |
99a654bd | 3942 | if (zvrf->other_table[afi][table_id] == NULL) |
3943 | { | |
3944 | table = route_table_init(); | |
3945 | info = XCALLOC (MTYPE_RIB_TABLE_INFO, sizeof (*info)); | |
3946 | info->zvrf = zvrf; | |
3947 | info->afi = afi; | |
3948 | info->safi = SAFI_UNICAST; | |
3949 | table->info = info; | |
3950 | zvrf->other_table[afi][table_id] = table; | |
3951 | } | |
12f6fb97 | 3952 | |
99a654bd | 3953 | return (zvrf->other_table[afi][table_id]); |
3954 | } | |
3955 | ||
12f6fb97 | 3956 | return zvrf->table[afi][SAFI_UNICAST]; |
b72ede27 | 3957 | } |