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