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7ee30f28 DS |
1 | /* |
2 | * Nexthop Group structure definition. | |
3 | * Copyright (C) 2018 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
5 | * | |
6 | * This program 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 Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | #include <zebra.h> | |
21 | ||
31919191 | 22 | #include <vrf.h> |
c57bd6bb | 23 | #include <sockunion.h> |
7ee30f28 DS |
24 | #include <nexthop.h> |
25 | #include <nexthop_group.h> | |
dba32923 DS |
26 | #include <vty.h> |
27 | #include <command.h> | |
28 | ||
29 | #ifndef VTYSH_EXTRACT_PL | |
30 | #include "lib/nexthop_group_clippy.c" | |
31 | #endif | |
7ee30f28 | 32 | |
31919191 DS |
33 | DEFINE_MTYPE_STATIC(LIB, NEXTHOP_GROUP, "Nexthop Group") |
34 | ||
35 | struct nexthop_group_hooks { | |
36 | void (*new)(const char *name); | |
37 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
38 | const struct nexthop *nhop); | |
39 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
40 | const struct nexthop *nhop); | |
41 | void (*delete)(const char *name); | |
42 | }; | |
43 | ||
44 | static struct nexthop_group_hooks nhg_hooks; | |
45 | ||
46 | static inline int | |
47 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
48 | const struct nexthop_group_cmd *nhgc2); | |
49 | RB_GENERATE(nhgc_entry_head, nexthop_group_cmd, nhgc_entry, | |
50 | nexthop_group_cmd_compare) | |
51 | ||
52 | struct nhgc_entry_head nhgc_entries; | |
53 | ||
54 | static inline int | |
55 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
56 | const struct nexthop_group_cmd *nhgc2) | |
57 | { | |
58 | return strcmp(nhgc1->name, nhgc2->name); | |
59 | } | |
60 | ||
61 | struct nexthop *nexthop_exists(struct nexthop_group *nhg, struct nexthop *nh) | |
62 | { | |
63 | struct nexthop *nexthop; | |
64 | ||
65 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
66 | if (nexthop_same(nh, nexthop)) | |
67 | return nexthop; | |
68 | } | |
69 | ||
70 | return NULL; | |
71 | } | |
72 | ||
73 | struct nexthop_group *nexthop_group_new(void) | |
74 | { | |
75 | return XCALLOC(MTYPE_NEXTHOP_GROUP, sizeof(struct nexthop_group)); | |
76 | } | |
77 | ||
78 | void nexthop_group_delete(struct nexthop_group **nhg) | |
79 | { | |
80 | XFREE(MTYPE_NEXTHOP_GROUP, *nhg); | |
81 | } | |
82 | ||
7ee30f28 DS |
83 | /* Add nexthop to the end of a nexthop list. */ |
84 | void nexthop_add(struct nexthop **target, struct nexthop *nexthop) | |
85 | { | |
86 | struct nexthop *last; | |
87 | ||
88 | for (last = *target; last && last->next; last = last->next) | |
89 | ; | |
90 | if (last) | |
91 | last->next = nexthop; | |
92 | else | |
93 | *target = nexthop; | |
94 | nexthop->prev = last; | |
95 | } | |
96 | ||
31919191 DS |
97 | /* Delete nexthop from a nexthop list. */ |
98 | void nexthop_del(struct nexthop_group *nhg, struct nexthop *nh) | |
99 | { | |
100 | struct nexthop *nexthop; | |
101 | ||
102 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
103 | if (nexthop_same(nh, nexthop)) | |
104 | break; | |
105 | } | |
106 | ||
107 | assert(nexthop); | |
108 | ||
109 | if (nexthop->prev) | |
110 | nexthop->prev->next = nexthop->next; | |
111 | else | |
112 | nhg->nexthop = nexthop->next; | |
113 | ||
114 | if (nexthop->next) | |
115 | nexthop->next->prev = nexthop->prev; | |
ebee2bc4 DS |
116 | |
117 | nh->prev = NULL; | |
118 | nh->next = NULL; | |
31919191 DS |
119 | } |
120 | ||
7ee30f28 DS |
121 | void copy_nexthops(struct nexthop **tnh, struct nexthop *nh, |
122 | struct nexthop *rparent) | |
123 | { | |
124 | struct nexthop *nexthop; | |
125 | struct nexthop *nh1; | |
126 | ||
127 | for (nh1 = nh; nh1; nh1 = nh1->next) { | |
128 | nexthop = nexthop_new(); | |
129 | nexthop->vrf_id = nh1->vrf_id; | |
130 | nexthop->ifindex = nh1->ifindex; | |
131 | nexthop->type = nh1->type; | |
132 | nexthop->flags = nh1->flags; | |
133 | memcpy(&nexthop->gate, &nh1->gate, sizeof(nh1->gate)); | |
134 | memcpy(&nexthop->src, &nh1->src, sizeof(nh1->src)); | |
135 | memcpy(&nexthop->rmap_src, &nh1->rmap_src, | |
136 | sizeof(nh1->rmap_src)); | |
137 | nexthop->rparent = rparent; | |
138 | if (nh1->nh_label) | |
139 | nexthop_add_labels(nexthop, nh1->nh_label_type, | |
140 | nh1->nh_label->num_labels, | |
141 | &nh1->nh_label->label[0]); | |
142 | nexthop_add(tnh, nexthop); | |
143 | ||
144 | if (CHECK_FLAG(nh1->flags, NEXTHOP_FLAG_RECURSIVE)) | |
145 | copy_nexthops(&nexthop->resolved, nh1->resolved, | |
146 | nexthop); | |
147 | } | |
148 | } | |
dba32923 | 149 | |
31919191 DS |
150 | static void nhgc_delete_nexthops(struct nexthop_group_cmd *nhgc) |
151 | { | |
152 | struct nexthop *nexthop; | |
153 | ||
154 | nexthop = nhgc->nhg.nexthop; | |
155 | while (nexthop) { | |
156 | struct nexthop *next = nexthop_next(nexthop); | |
157 | ||
ebee2bc4 | 158 | nexthop_del(&nhgc->nhg, nexthop); |
31919191 DS |
159 | if (nhg_hooks.del_nexthop) |
160 | nhg_hooks.del_nexthop(nhgc, nexthop); | |
161 | ||
162 | nexthop_free(nexthop); | |
163 | ||
164 | nexthop = next; | |
165 | } | |
166 | } | |
167 | ||
d604266c | 168 | struct nexthop_group_cmd *nhgc_find(const char *name) |
31919191 DS |
169 | { |
170 | struct nexthop_group_cmd find; | |
171 | ||
172 | strlcpy(find.name, name, sizeof(find.name)); | |
173 | ||
174 | return RB_FIND(nhgc_entry_head, &nhgc_entries, &find); | |
175 | } | |
176 | ||
c57bd6bb DS |
177 | static int nhgc_cmp_helper(const char *a, const char *b) |
178 | { | |
179 | if (!a && !b) | |
180 | return 0; | |
181 | ||
182 | if (a && !b) | |
183 | return -1; | |
184 | ||
185 | if (!a && b) | |
186 | return 1; | |
187 | ||
188 | return strcmp(a, b); | |
189 | } | |
190 | ||
191 | static int nhgl_cmp(struct nexthop_hold *nh1, struct nexthop_hold *nh2) | |
192 | { | |
193 | int ret; | |
194 | ||
195 | ret = sockunion_cmp(&nh1->addr, &nh2->addr); | |
196 | if (ret) | |
197 | return ret; | |
198 | ||
199 | ret = nhgc_cmp_helper(nh1->intf, nh2->intf); | |
200 | if (ret) | |
201 | return ret; | |
202 | ||
203 | return nhgc_cmp_helper(nh1->nhvrf_name, nh2->nhvrf_name); | |
204 | } | |
205 | ||
206 | static void nhgl_delete(struct nexthop_hold *nh) | |
207 | { | |
208 | if (nh->intf) | |
209 | XFREE(MTYPE_TMP, nh->intf); | |
210 | ||
211 | if (nh->nhvrf_name) | |
212 | XFREE(MTYPE_TMP, nh->nhvrf_name); | |
213 | ||
214 | XFREE(MTYPE_TMP, nh); | |
215 | } | |
216 | ||
31919191 DS |
217 | static struct nexthop_group_cmd *nhgc_get(const char *name) |
218 | { | |
219 | struct nexthop_group_cmd *nhgc; | |
220 | ||
221 | nhgc = nhgc_find(name); | |
222 | if (!nhgc) { | |
223 | nhgc = XCALLOC(MTYPE_TMP, sizeof(*nhgc)); | |
224 | strlcpy(nhgc->name, name, sizeof(nhgc->name)); | |
225 | ||
226 | QOBJ_REG(nhgc, nexthop_group_cmd); | |
227 | RB_INSERT(nhgc_entry_head, &nhgc_entries, nhgc); | |
228 | ||
c57bd6bb DS |
229 | nhgc->nhg_list = list_new(); |
230 | nhgc->nhg_list->cmp = (int (*)(void *, void *))nhgl_cmp; | |
231 | nhgc->nhg_list->del = (void (*)(void *))nhgl_delete; | |
232 | ||
31919191 DS |
233 | if (nhg_hooks.new) |
234 | nhg_hooks.new(name); | |
235 | } | |
236 | ||
237 | return nhgc; | |
238 | } | |
239 | ||
240 | static void nhgc_delete(struct nexthop_group_cmd *nhgc) | |
dba32923 | 241 | { |
31919191 DS |
242 | nhgc_delete_nexthops(nhgc); |
243 | ||
244 | if (nhg_hooks.delete) | |
245 | nhg_hooks.delete(nhgc->name); | |
246 | ||
247 | RB_REMOVE(nhgc_entry_head, &nhgc_entries, nhgc); | |
c57bd6bb DS |
248 | |
249 | list_delete_and_null(&nhgc->nhg_list); | |
250 | ||
251 | XFREE(MTYPE_TMP, nhgc); | |
31919191 DS |
252 | } |
253 | ||
254 | DEFINE_QOBJ_TYPE(nexthop_group_cmd) | |
255 | ||
256 | DEFUN_NOSH(nexthop_group, nexthop_group_cmd, "nexthop-group NAME", | |
257 | "Enter into the nexthop-group submode\n" | |
258 | "Specify the NAME of the nexthop-group\n") | |
259 | { | |
260 | const char *nhg_name = argv[1]->arg; | |
261 | struct nexthop_group_cmd *nhgc = NULL; | |
262 | ||
263 | nhgc = nhgc_get(nhg_name); | |
264 | VTY_PUSH_CONTEXT(NH_GROUP_NODE, nhgc); | |
265 | ||
266 | return CMD_SUCCESS; | |
267 | } | |
268 | ||
269 | DEFUN_NOSH(no_nexthop_group, no_nexthop_group_cmd, "no nexthop-group NAME", | |
270 | NO_STR | |
271 | "Delete the nexthop-group\n" | |
272 | "Specify the NAME of the nexthop-group\n") | |
273 | { | |
274 | const char *nhg_name = argv[2]->arg; | |
275 | struct nexthop_group_cmd *nhgc = NULL; | |
276 | ||
277 | nhgc = nhgc_find(nhg_name); | |
278 | if (nhgc) | |
279 | nhgc_delete(nhgc); | |
280 | ||
281 | return CMD_SUCCESS; | |
282 | } | |
283 | ||
c57bd6bb DS |
284 | static void nexthop_group_save_nhop(struct nexthop_group_cmd *nhgc, |
285 | const char *nhvrf_name, | |
286 | const union sockunion *addr, | |
287 | const char *intf) | |
288 | { | |
289 | struct nexthop_hold *nh; | |
290 | ||
291 | nh = XCALLOC(MTYPE_TMP, sizeof(*nh)); | |
292 | ||
293 | if (nhvrf_name) | |
294 | nh->nhvrf_name = XSTRDUP(MTYPE_TMP, nhvrf_name); | |
295 | if (intf) | |
296 | nh->intf = XSTRDUP(MTYPE_TMP, intf); | |
297 | ||
298 | nh->addr = *addr; | |
299 | ||
300 | listnode_add_sort(nhgc->nhg_list, nh); | |
301 | } | |
302 | ||
303 | static void nexthop_group_unsave_nhop(struct nexthop_group_cmd *nhgc, | |
304 | const char *nhvrf_name, | |
305 | const union sockunion *addr, | |
306 | const char *intf) | |
307 | { | |
308 | struct nexthop_hold *nh; | |
309 | struct listnode *node; | |
310 | ||
311 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { | |
312 | if (nhgc_cmp_helper(nhvrf_name, nh->nhvrf_name) == 0 && | |
313 | sockunion_cmp(addr, &nh->addr) == 0 && | |
314 | nhgc_cmp_helper(intf, nh->intf) == 0) | |
315 | break; | |
316 | } | |
317 | ||
318 | /* | |
319 | * Something has gone seriously wrong, fail gracefully | |
320 | */ | |
321 | if (!nh) | |
322 | return; | |
323 | ||
324 | list_delete_node(nhgc->nhg_list, node); | |
325 | ||
326 | if (nh->nhvrf_name) | |
327 | XFREE(MTYPE_TMP, nh->nhvrf_name); | |
328 | if (nh->intf) | |
329 | XFREE(MTYPE_TMP, nh->intf); | |
330 | ||
331 | XFREE(MTYPE_TMP, nh); | |
332 | } | |
333 | ||
98cbbaea DS |
334 | static bool nexthop_group_parse_nexthop(struct nexthop *nhop, |
335 | const union sockunion *addr, | |
336 | const char *intf, const char *name) | |
31919191 | 337 | { |
31919191 | 338 | struct vrf *vrf; |
98cbbaea DS |
339 | |
340 | memset(nhop, 0, sizeof(*nhop)); | |
31919191 DS |
341 | |
342 | if (name) | |
343 | vrf = vrf_lookup_by_name(name); | |
344 | else | |
345 | vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
346 | ||
98cbbaea DS |
347 | if (!vrf) |
348 | return false; | |
31919191 | 349 | |
98cbbaea | 350 | nhop->vrf_id = vrf->vrf_id; |
31919191 DS |
351 | |
352 | if (addr->sa.sa_family == AF_INET) { | |
98cbbaea | 353 | nhop->gate.ipv4.s_addr = addr->sin.sin_addr.s_addr; |
31919191 | 354 | if (intf) { |
98cbbaea DS |
355 | nhop->type = NEXTHOP_TYPE_IPV4_IFINDEX; |
356 | nhop->ifindex = ifname2ifindex(intf, vrf->vrf_id); | |
357 | if (nhop->ifindex == IFINDEX_INTERNAL) | |
358 | return false; | |
31919191 | 359 | } else |
98cbbaea | 360 | nhop->type = NEXTHOP_TYPE_IPV4; |
31919191 | 361 | } else { |
98cbbaea | 362 | memcpy(&nhop->gate.ipv6, &addr->sin6.sin6_addr, 16); |
31919191 | 363 | if (intf) { |
98cbbaea DS |
364 | nhop->type = NEXTHOP_TYPE_IPV6_IFINDEX; |
365 | nhop->ifindex = ifname2ifindex(intf, vrf->vrf_id); | |
366 | if (nhop->ifindex == IFINDEX_INTERNAL) | |
367 | return false; | |
368 | } else | |
369 | nhop->type = NEXTHOP_TYPE_IPV6; | |
370 | } | |
371 | ||
372 | return true; | |
373 | } | |
374 | ||
375 | DEFPY(ecmp_nexthops, ecmp_nexthops_cmd, | |
376 | "[no] nexthop <A.B.C.D|X:X::X:X>$addr [INTERFACE]$intf [nexthop-vrf NAME$name]", | |
377 | NO_STR | |
378 | "Specify one of the nexthops in this ECMP group\n" | |
379 | "v4 Address\n" | |
380 | "v6 Address\n" | |
381 | "Interface to use\n" | |
382 | "If the nexthop is in a different vrf tell us\n" | |
383 | "The nexthop-vrf Name\n") | |
384 | { | |
385 | VTY_DECLVAR_CONTEXT(nexthop_group_cmd, nhgc); | |
386 | struct nexthop nhop; | |
387 | struct nexthop *nh; | |
388 | bool legal; | |
389 | ||
b51016eb DS |
390 | /* |
391 | * This is impossible to happen as that the cli parser refuses | |
392 | * to let you get here without an addr, but the SA system | |
393 | * does not understand this intricacy | |
394 | */ | |
395 | assert(addr); | |
396 | ||
98cbbaea DS |
397 | legal = nexthop_group_parse_nexthop(&nhop, addr, intf, name); |
398 | ||
399 | if (nhop.type == NEXTHOP_TYPE_IPV6 | |
400 | && IN6_IS_ADDR_LINKLOCAL(&nhop.gate.ipv6)) { | |
401 | vty_out(vty, | |
402 | "Specified a v6 LL with no interface, rejecting\n"); | |
403 | return CMD_WARNING_CONFIG_FAILED; | |
31919191 DS |
404 | } |
405 | ||
406 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
407 | ||
408 | if (no) { | |
98cbbaea | 409 | nexthop_group_unsave_nhop(nhgc, name, addr, intf); |
31919191 DS |
410 | if (nh) { |
411 | nexthop_del(&nhgc->nhg, nh); | |
412 | ||
413 | if (nhg_hooks.del_nexthop) | |
414 | nhg_hooks.del_nexthop(nhgc, nh); | |
415 | ||
416 | nexthop_free(nh); | |
417 | } | |
418 | } else if (!nh) { | |
419 | /* must be adding new nexthop since !no and !nexthop_exists */ | |
98cbbaea DS |
420 | if (legal) { |
421 | nh = nexthop_new(); | |
31919191 | 422 | |
98cbbaea DS |
423 | memcpy(nh, &nhop, sizeof(nhop)); |
424 | nexthop_add(&nhgc->nhg.nexthop, nh); | |
425 | } | |
31919191 | 426 | |
c57bd6bb DS |
427 | nexthop_group_save_nhop(nhgc, name, addr, intf); |
428 | ||
98cbbaea | 429 | if (legal && nhg_hooks.add_nexthop) |
31919191 DS |
430 | nhg_hooks.add_nexthop(nhgc, nh); |
431 | } | |
432 | ||
dba32923 DS |
433 | return CMD_SUCCESS; |
434 | } | |
435 | ||
436 | struct cmd_node nexthop_group_node = { | |
437 | NH_GROUP_NODE, | |
438 | "%s(config-nh-group)# ", | |
439 | 1 | |
440 | }; | |
441 | ||
1b7bce04 DS |
442 | void nexthop_group_write_nexthop(struct vty *vty, struct nexthop *nh) |
443 | { | |
444 | char buf[100]; | |
445 | struct vrf *vrf; | |
446 | ||
57cdafc4 | 447 | vty_out(vty, "nexthop "); |
1b7bce04 DS |
448 | |
449 | switch (nh->type) { | |
450 | case NEXTHOP_TYPE_IFINDEX: | |
451 | vty_out(vty, "%s", ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
452 | break; | |
453 | case NEXTHOP_TYPE_IPV4: | |
454 | vty_out(vty, "%s", inet_ntoa(nh->gate.ipv4)); | |
455 | break; | |
456 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
457 | vty_out(vty, "%s %s", inet_ntoa(nh->gate.ipv4), | |
458 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
459 | break; | |
460 | case NEXTHOP_TYPE_IPV6: | |
461 | vty_out(vty, "%s", | |
462 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf))); | |
463 | break; | |
464 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
465 | vty_out(vty, "%s %s", | |
466 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf)), | |
467 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
468 | break; | |
469 | case NEXTHOP_TYPE_BLACKHOLE: | |
470 | break; | |
471 | } | |
472 | ||
473 | if (nh->vrf_id != VRF_DEFAULT) { | |
474 | vrf = vrf_lookup_by_id(nh->vrf_id); | |
475 | vty_out(vty, " nexthop-vrf %s", vrf->name); | |
476 | } | |
477 | vty_out(vty, "\n"); | |
478 | } | |
479 | ||
c57bd6bb DS |
480 | static void nexthop_group_write_nexthop_internal(struct vty *vty, |
481 | struct nexthop_hold *nh) | |
482 | { | |
483 | char buf[100]; | |
484 | ||
485 | vty_out(vty, "nexthop "); | |
486 | ||
487 | vty_out(vty, "%s", sockunion2str(&nh->addr, buf, sizeof(buf))); | |
488 | ||
489 | if (nh->intf) | |
490 | vty_out(vty, " %s", nh->intf); | |
491 | ||
492 | if (nh->nhvrf_name) | |
493 | vty_out(vty, " nexthop-vrf %s", nh->nhvrf_name); | |
494 | ||
495 | vty_out(vty, "\n"); | |
496 | } | |
497 | ||
dba32923 DS |
498 | static int nexthop_group_write(struct vty *vty) |
499 | { | |
31919191 | 500 | struct nexthop_group_cmd *nhgc; |
c57bd6bb | 501 | struct nexthop_hold *nh; |
31919191 DS |
502 | |
503 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
c57bd6bb DS |
504 | struct listnode *node; |
505 | ||
31919191 DS |
506 | vty_out(vty, "nexthop-group %s\n", nhgc->name); |
507 | ||
c57bd6bb | 508 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { |
811f859f | 509 | vty_out(vty, " "); |
c57bd6bb | 510 | nexthop_group_write_nexthop_internal(vty, nh); |
811f859f | 511 | } |
31919191 | 512 | |
31919191 DS |
513 | vty_out(vty, "!\n"); |
514 | } | |
dba32923 DS |
515 | |
516 | return 1; | |
517 | } | |
518 | ||
98cbbaea DS |
519 | void nexthop_group_enable_vrf(struct vrf *vrf) |
520 | { | |
521 | struct nexthop_group_cmd *nhgc; | |
522 | struct nexthop_hold *nhh; | |
523 | ||
524 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
525 | struct listnode *node; | |
526 | ||
527 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
528 | struct nexthop nhop; | |
529 | struct nexthop *nh; | |
530 | ||
531 | if (!nexthop_group_parse_nexthop(&nhop, &nhh->addr, | |
532 | nhh->intf, | |
533 | nhh->nhvrf_name)) | |
534 | continue; | |
535 | ||
536 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
537 | ||
538 | if (nh) | |
539 | continue; | |
540 | ||
541 | if (nhop.vrf_id != vrf->vrf_id) | |
542 | continue; | |
543 | ||
544 | nh = nexthop_new(); | |
545 | ||
546 | memcpy(nh, &nhop, sizeof(nhop)); | |
547 | nexthop_add(&nhgc->nhg.nexthop, nh); | |
548 | ||
549 | if (nhg_hooks.add_nexthop) | |
550 | nhg_hooks.add_nexthop(nhgc, nh); | |
551 | } | |
552 | } | |
553 | } | |
554 | ||
555 | void nexthop_group_disable_vrf(struct vrf *vrf) | |
556 | { | |
557 | struct nexthop_group_cmd *nhgc; | |
558 | struct nexthop_hold *nhh; | |
559 | ||
560 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
561 | struct listnode *node; | |
562 | ||
563 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
564 | struct nexthop nhop; | |
565 | struct nexthop *nh; | |
566 | ||
567 | if (!nexthop_group_parse_nexthop(&nhop, &nhh->addr, | |
568 | nhh->intf, | |
569 | nhh->nhvrf_name)) | |
570 | continue; | |
571 | ||
572 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
573 | ||
574 | if (!nh) | |
575 | continue; | |
576 | ||
577 | if (nh->vrf_id != vrf->vrf_id) | |
578 | continue; | |
579 | ||
580 | nexthop_del(&nhgc->nhg, nh); | |
581 | ||
582 | if (nhg_hooks.del_nexthop) | |
583 | nhg_hooks.del_nexthop(nhgc, nh); | |
584 | ||
585 | nexthop_free(nh); | |
586 | } | |
587 | } | |
588 | } | |
589 | ||
590 | void nexthop_group_interface_state_change(struct interface *ifp, | |
591 | ifindex_t oldifindex) | |
592 | { | |
593 | struct nexthop_group_cmd *nhgc; | |
594 | struct nexthop_hold *nhh; | |
595 | ||
596 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
597 | struct listnode *node; | |
598 | struct nexthop *nh; | |
599 | ||
600 | if (if_is_up(ifp)) { | |
601 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
602 | struct nexthop nhop; | |
603 | ||
604 | if (!nexthop_group_parse_nexthop( | |
605 | &nhop, &nhh->addr, nhh->intf, | |
606 | nhh->nhvrf_name)) | |
607 | continue; | |
608 | ||
609 | switch (nhop.type) { | |
610 | case NEXTHOP_TYPE_IPV4: | |
611 | case NEXTHOP_TYPE_IPV6: | |
612 | case NEXTHOP_TYPE_BLACKHOLE: | |
613 | continue; | |
614 | case NEXTHOP_TYPE_IFINDEX: | |
615 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
616 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
617 | break; | |
618 | } | |
619 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
620 | ||
621 | if (nh) | |
622 | continue; | |
623 | ||
624 | if (ifp->ifindex != nhop.ifindex) | |
625 | continue; | |
626 | ||
627 | nh = nexthop_new(); | |
628 | ||
629 | memcpy(nh, &nhop, sizeof(nhop)); | |
630 | nexthop_add(&nhgc->nhg.nexthop, nh); | |
631 | ||
632 | if (nhg_hooks.add_nexthop) | |
633 | nhg_hooks.add_nexthop(nhgc, nh); | |
634 | } | |
635 | } else { | |
636 | struct nexthop *next_nh; | |
637 | ||
638 | for (nh = nhgc->nhg.nexthop; nh; nh = next_nh) { | |
639 | next_nh = nh->next; | |
640 | switch (nh->type) { | |
641 | case NEXTHOP_TYPE_IPV4: | |
642 | case NEXTHOP_TYPE_IPV6: | |
643 | case NEXTHOP_TYPE_BLACKHOLE: | |
644 | continue; | |
645 | case NEXTHOP_TYPE_IFINDEX: | |
646 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
647 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
648 | break; | |
649 | } | |
650 | ||
651 | if (oldifindex != nh->ifindex) | |
652 | continue; | |
653 | ||
654 | nexthop_del(&nhgc->nhg, nh); | |
655 | ||
656 | if (nhg_hooks.del_nexthop) | |
657 | nhg_hooks.del_nexthop(nhgc, nh); | |
658 | ||
659 | nexthop_free(nh); | |
660 | } | |
661 | } | |
662 | } | |
663 | } | |
664 | ||
31919191 DS |
665 | void nexthop_group_init(void (*new)(const char *name), |
666 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
667 | const struct nexthop *nhop), | |
668 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
669 | const struct nexthop *nhop), | |
670 | void (*delete)(const char *name)) | |
dba32923 | 671 | { |
31919191 DS |
672 | RB_INIT(nhgc_entry_head, &nhgc_entries); |
673 | ||
dba32923 DS |
674 | install_node(&nexthop_group_node, nexthop_group_write); |
675 | install_element(CONFIG_NODE, &nexthop_group_cmd); | |
31919191 DS |
676 | install_element(CONFIG_NODE, &no_nexthop_group_cmd); |
677 | ||
678 | install_default(NH_GROUP_NODE); | |
679 | install_element(NH_GROUP_NODE, &ecmp_nexthops_cmd); | |
680 | ||
681 | memset(&nhg_hooks, 0, sizeof(nhg_hooks)); | |
682 | ||
683 | if (new) | |
684 | nhg_hooks.new = new; | |
685 | if (add_nexthop) | |
686 | nhg_hooks.add_nexthop = add_nexthop; | |
687 | if (del_nexthop) | |
688 | nhg_hooks.del_nexthop = del_nexthop; | |
689 | if (delete) | |
690 | nhg_hooks.delete = delete; | |
dba32923 | 691 | } |