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Commit | Line | Data |
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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> | |
50d89650 | 26 | #include <nexthop_group_private.h> |
dba32923 DS |
27 | #include <vty.h> |
28 | #include <command.h> | |
1b1fe1c4 | 29 | #include <jhash.h> |
dba32923 DS |
30 | |
31 | #ifndef VTYSH_EXTRACT_PL | |
32 | #include "lib/nexthop_group_clippy.c" | |
33 | #endif | |
7ee30f28 | 34 | |
31919191 DS |
35 | DEFINE_MTYPE_STATIC(LIB, NEXTHOP_GROUP, "Nexthop Group") |
36 | ||
37 | struct nexthop_group_hooks { | |
38 | void (*new)(const char *name); | |
39 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
40 | const struct nexthop *nhop); | |
41 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
42 | const struct nexthop *nhop); | |
43 | void (*delete)(const char *name); | |
44 | }; | |
45 | ||
46 | static struct nexthop_group_hooks nhg_hooks; | |
47 | ||
48 | static inline int | |
49 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
50 | const struct nexthop_group_cmd *nhgc2); | |
51 | RB_GENERATE(nhgc_entry_head, nexthop_group_cmd, nhgc_entry, | |
52 | nexthop_group_cmd_compare) | |
53 | ||
c17faa4b | 54 | static struct nhgc_entry_head nhgc_entries; |
31919191 DS |
55 | |
56 | static inline int | |
57 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
58 | const struct nexthop_group_cmd *nhgc2) | |
59 | { | |
60 | return strcmp(nhgc1->name, nhgc2->name); | |
61 | } | |
62 | ||
8c15fa95 SW |
63 | static struct nexthop *nexthop_group_tail(const struct nexthop_group *nhg) |
64 | { | |
65 | struct nexthop *nexthop = nhg->nexthop; | |
66 | ||
67 | while (nexthop && nexthop->next) | |
68 | nexthop = nexthop->next; | |
69 | ||
70 | return nexthop; | |
71 | } | |
72 | ||
454192f4 DS |
73 | uint8_t nexthop_group_nexthop_num(const struct nexthop_group *nhg) |
74 | { | |
75 | struct nexthop *nhop; | |
76 | uint8_t num = 0; | |
77 | ||
78 | for (ALL_NEXTHOPS_PTR(nhg, nhop)) | |
79 | num++; | |
80 | ||
81 | return num; | |
82 | } | |
83 | ||
84 | uint8_t nexthop_group_active_nexthop_num(const struct nexthop_group *nhg) | |
85 | { | |
86 | struct nexthop *nhop; | |
87 | uint8_t num = 0; | |
88 | ||
89 | for (ALL_NEXTHOPS_PTR(nhg, nhop)) { | |
90 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_ACTIVE)) | |
91 | num++; | |
92 | } | |
93 | ||
94 | return num; | |
95 | } | |
96 | ||
31919191 DS |
97 | struct nexthop *nexthop_exists(struct nexthop_group *nhg, struct nexthop *nh) |
98 | { | |
99 | struct nexthop *nexthop; | |
100 | ||
101 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
102 | if (nexthop_same(nh, nexthop)) | |
103 | return nexthop; | |
104 | } | |
105 | ||
106 | return NULL; | |
107 | } | |
108 | ||
109 | struct nexthop_group *nexthop_group_new(void) | |
110 | { | |
111 | return XCALLOC(MTYPE_NEXTHOP_GROUP, sizeof(struct nexthop_group)); | |
112 | } | |
113 | ||
6c8b51e1 DS |
114 | void nexthop_group_copy(struct nexthop_group *to, struct nexthop_group *from) |
115 | { | |
116 | /* Copy everything, including recursive info */ | |
117 | copy_nexthops(&to->nexthop, from->nexthop, NULL); | |
118 | } | |
119 | ||
31919191 DS |
120 | void nexthop_group_delete(struct nexthop_group **nhg) |
121 | { | |
122 | XFREE(MTYPE_NEXTHOP_GROUP, *nhg); | |
123 | } | |
124 | ||
7ee30f28 | 125 | /* Add nexthop to the end of a nexthop list. */ |
50d89650 | 126 | void _nexthop_add(struct nexthop **target, struct nexthop *nexthop) |
7ee30f28 DS |
127 | { |
128 | struct nexthop *last; | |
129 | ||
130 | for (last = *target; last && last->next; last = last->next) | |
131 | ; | |
132 | if (last) | |
133 | last->next = nexthop; | |
134 | else | |
135 | *target = nexthop; | |
136 | nexthop->prev = last; | |
137 | } | |
138 | ||
50d89650 SW |
139 | void _nexthop_group_add_sorted(struct nexthop_group *nhg, |
140 | struct nexthop *nexthop) | |
6c8b51e1 | 141 | { |
8c15fa95 SW |
142 | struct nexthop *position, *prev, *tail; |
143 | ||
144 | /* Try to just append to the end first | |
145 | * This trust it is already sorted | |
146 | */ | |
147 | ||
148 | tail = nexthop_group_tail(nhg); | |
149 | ||
150 | if (tail && (nexthop_cmp(tail, nexthop) < 0)) { | |
151 | tail->next = nexthop; | |
152 | nexthop->prev = tail; | |
153 | ||
154 | return; | |
155 | } | |
6c8b51e1 DS |
156 | |
157 | for (position = nhg->nexthop, prev = NULL; position; | |
158 | prev = position, position = position->next) { | |
159 | if (nexthop_cmp(position, nexthop) > 0) { | |
160 | nexthop->next = position; | |
161 | nexthop->prev = prev; | |
162 | ||
163 | if (nexthop->prev) | |
164 | nexthop->prev->next = nexthop; | |
165 | else | |
166 | nhg->nexthop = nexthop; | |
167 | ||
168 | position->prev = nexthop; | |
169 | return; | |
170 | } | |
171 | } | |
172 | ||
173 | nexthop->prev = prev; | |
174 | if (prev) | |
175 | prev->next = nexthop; | |
176 | else | |
177 | nhg->nexthop = nexthop; | |
6c8b51e1 DS |
178 | } |
179 | ||
31919191 | 180 | /* Delete nexthop from a nexthop list. */ |
50d89650 | 181 | void _nexthop_del(struct nexthop_group *nhg, struct nexthop *nh) |
31919191 DS |
182 | { |
183 | struct nexthop *nexthop; | |
184 | ||
185 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
186 | if (nexthop_same(nh, nexthop)) | |
187 | break; | |
188 | } | |
189 | ||
190 | assert(nexthop); | |
191 | ||
192 | if (nexthop->prev) | |
193 | nexthop->prev->next = nexthop->next; | |
194 | else | |
195 | nhg->nexthop = nexthop->next; | |
196 | ||
197 | if (nexthop->next) | |
198 | nexthop->next->prev = nexthop->prev; | |
ebee2bc4 DS |
199 | |
200 | nh->prev = NULL; | |
201 | nh->next = NULL; | |
31919191 DS |
202 | } |
203 | ||
deff170e | 204 | void copy_nexthops(struct nexthop **tnh, const struct nexthop *nh, |
7ee30f28 DS |
205 | struct nexthop *rparent) |
206 | { | |
207 | struct nexthop *nexthop; | |
deff170e | 208 | const struct nexthop *nh1; |
7ee30f28 DS |
209 | |
210 | for (nh1 = nh; nh1; nh1 = nh1->next) { | |
504d0a40 | 211 | nexthop = nexthop_dup(nh1, rparent); |
50d89650 | 212 | _nexthop_add(tnh, nexthop); |
7ee30f28 DS |
213 | |
214 | if (CHECK_FLAG(nh1->flags, NEXTHOP_FLAG_RECURSIVE)) | |
215 | copy_nexthops(&nexthop->resolved, nh1->resolved, | |
216 | nexthop); | |
217 | } | |
218 | } | |
dba32923 | 219 | |
1b1fe1c4 SW |
220 | uint32_t nexthop_group_hash(const struct nexthop_group *nhg) |
221 | { | |
222 | struct nexthop *nh; | |
223 | uint32_t key = 0; | |
224 | ||
225 | /* | |
226 | * We are not interested in hashing over any recursively | |
227 | * resolved nexthops | |
228 | */ | |
229 | for (nh = nhg->nexthop; nh; nh = nh->next) | |
230 | key = jhash_1word(nexthop_hash(nh), key); | |
231 | ||
232 | return key; | |
233 | } | |
234 | ||
31919191 DS |
235 | static void nhgc_delete_nexthops(struct nexthop_group_cmd *nhgc) |
236 | { | |
237 | struct nexthop *nexthop; | |
238 | ||
239 | nexthop = nhgc->nhg.nexthop; | |
240 | while (nexthop) { | |
241 | struct nexthop *next = nexthop_next(nexthop); | |
242 | ||
50d89650 | 243 | _nexthop_del(&nhgc->nhg, nexthop); |
31919191 DS |
244 | if (nhg_hooks.del_nexthop) |
245 | nhg_hooks.del_nexthop(nhgc, nexthop); | |
246 | ||
247 | nexthop_free(nexthop); | |
248 | ||
249 | nexthop = next; | |
250 | } | |
251 | } | |
252 | ||
d604266c | 253 | struct nexthop_group_cmd *nhgc_find(const char *name) |
31919191 DS |
254 | { |
255 | struct nexthop_group_cmd find; | |
256 | ||
257 | strlcpy(find.name, name, sizeof(find.name)); | |
258 | ||
259 | return RB_FIND(nhgc_entry_head, &nhgc_entries, &find); | |
260 | } | |
261 | ||
c57bd6bb DS |
262 | static int nhgc_cmp_helper(const char *a, const char *b) |
263 | { | |
264 | if (!a && !b) | |
265 | return 0; | |
266 | ||
267 | if (a && !b) | |
268 | return -1; | |
269 | ||
270 | if (!a && b) | |
271 | return 1; | |
272 | ||
273 | return strcmp(a, b); | |
274 | } | |
275 | ||
1c869b64 RW |
276 | static int nhgc_addr_cmp_helper(const union sockunion *a, const union sockunion *b) |
277 | { | |
278 | if (!a && !b) | |
279 | return 0; | |
280 | ||
281 | if (a && !b) | |
282 | return -1; | |
283 | ||
284 | if (!a && b) | |
285 | return 1; | |
286 | ||
287 | return sockunion_cmp(a, b); | |
288 | } | |
289 | ||
c57bd6bb DS |
290 | static int nhgl_cmp(struct nexthop_hold *nh1, struct nexthop_hold *nh2) |
291 | { | |
292 | int ret; | |
293 | ||
1c869b64 | 294 | ret = nhgc_addr_cmp_helper(nh1->addr, nh2->addr); |
c57bd6bb DS |
295 | if (ret) |
296 | return ret; | |
297 | ||
298 | ret = nhgc_cmp_helper(nh1->intf, nh2->intf); | |
299 | if (ret) | |
300 | return ret; | |
301 | ||
302 | return nhgc_cmp_helper(nh1->nhvrf_name, nh2->nhvrf_name); | |
303 | } | |
304 | ||
305 | static void nhgl_delete(struct nexthop_hold *nh) | |
306 | { | |
0a22ddfb | 307 | XFREE(MTYPE_TMP, nh->intf); |
c57bd6bb | 308 | |
0a22ddfb | 309 | XFREE(MTYPE_TMP, nh->nhvrf_name); |
c57bd6bb | 310 | |
1c869b64 RW |
311 | if (nh->addr) |
312 | sockunion_free(nh->addr); | |
b43bb64f | 313 | |
c57bd6bb DS |
314 | XFREE(MTYPE_TMP, nh); |
315 | } | |
316 | ||
31919191 DS |
317 | static struct nexthop_group_cmd *nhgc_get(const char *name) |
318 | { | |
319 | struct nexthop_group_cmd *nhgc; | |
320 | ||
321 | nhgc = nhgc_find(name); | |
322 | if (!nhgc) { | |
323 | nhgc = XCALLOC(MTYPE_TMP, sizeof(*nhgc)); | |
324 | strlcpy(nhgc->name, name, sizeof(nhgc->name)); | |
325 | ||
326 | QOBJ_REG(nhgc, nexthop_group_cmd); | |
327 | RB_INSERT(nhgc_entry_head, &nhgc_entries, nhgc); | |
328 | ||
c57bd6bb DS |
329 | nhgc->nhg_list = list_new(); |
330 | nhgc->nhg_list->cmp = (int (*)(void *, void *))nhgl_cmp; | |
331 | nhgc->nhg_list->del = (void (*)(void *))nhgl_delete; | |
332 | ||
31919191 DS |
333 | if (nhg_hooks.new) |
334 | nhg_hooks.new(name); | |
335 | } | |
336 | ||
337 | return nhgc; | |
338 | } | |
339 | ||
340 | static void nhgc_delete(struct nexthop_group_cmd *nhgc) | |
dba32923 | 341 | { |
31919191 DS |
342 | nhgc_delete_nexthops(nhgc); |
343 | ||
344 | if (nhg_hooks.delete) | |
345 | nhg_hooks.delete(nhgc->name); | |
346 | ||
347 | RB_REMOVE(nhgc_entry_head, &nhgc_entries, nhgc); | |
c57bd6bb | 348 | |
6a154c88 | 349 | list_delete(&nhgc->nhg_list); |
c57bd6bb DS |
350 | |
351 | XFREE(MTYPE_TMP, nhgc); | |
31919191 DS |
352 | } |
353 | ||
354 | DEFINE_QOBJ_TYPE(nexthop_group_cmd) | |
355 | ||
868ee86c | 356 | DEFUN_NOSH(nexthop_group, nexthop_group_cmd, "nexthop-group NHGNAME", |
31919191 DS |
357 | "Enter into the nexthop-group submode\n" |
358 | "Specify the NAME of the nexthop-group\n") | |
359 | { | |
360 | const char *nhg_name = argv[1]->arg; | |
361 | struct nexthop_group_cmd *nhgc = NULL; | |
362 | ||
363 | nhgc = nhgc_get(nhg_name); | |
364 | VTY_PUSH_CONTEXT(NH_GROUP_NODE, nhgc); | |
365 | ||
366 | return CMD_SUCCESS; | |
367 | } | |
368 | ||
868ee86c | 369 | DEFUN_NOSH(no_nexthop_group, no_nexthop_group_cmd, "no nexthop-group NHGNAME", |
31919191 DS |
370 | NO_STR |
371 | "Delete the nexthop-group\n" | |
372 | "Specify the NAME of the nexthop-group\n") | |
373 | { | |
374 | const char *nhg_name = argv[2]->arg; | |
375 | struct nexthop_group_cmd *nhgc = NULL; | |
376 | ||
377 | nhgc = nhgc_find(nhg_name); | |
378 | if (nhgc) | |
379 | nhgc_delete(nhgc); | |
380 | ||
381 | return CMD_SUCCESS; | |
382 | } | |
383 | ||
c57bd6bb DS |
384 | static void nexthop_group_save_nhop(struct nexthop_group_cmd *nhgc, |
385 | const char *nhvrf_name, | |
386 | const union sockunion *addr, | |
387 | const char *intf) | |
388 | { | |
389 | struct nexthop_hold *nh; | |
390 | ||
391 | nh = XCALLOC(MTYPE_TMP, sizeof(*nh)); | |
392 | ||
393 | if (nhvrf_name) | |
394 | nh->nhvrf_name = XSTRDUP(MTYPE_TMP, nhvrf_name); | |
395 | if (intf) | |
396 | nh->intf = XSTRDUP(MTYPE_TMP, intf); | |
1c869b64 RW |
397 | if (addr) |
398 | nh->addr = sockunion_dup(addr); | |
c57bd6bb DS |
399 | |
400 | listnode_add_sort(nhgc->nhg_list, nh); | |
401 | } | |
402 | ||
403 | static void nexthop_group_unsave_nhop(struct nexthop_group_cmd *nhgc, | |
404 | const char *nhvrf_name, | |
405 | const union sockunion *addr, | |
406 | const char *intf) | |
407 | { | |
408 | struct nexthop_hold *nh; | |
409 | struct listnode *node; | |
410 | ||
411 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { | |
412 | if (nhgc_cmp_helper(nhvrf_name, nh->nhvrf_name) == 0 && | |
1c869b64 | 413 | nhgc_addr_cmp_helper(addr, nh->addr) == 0 && |
c57bd6bb DS |
414 | nhgc_cmp_helper(intf, nh->intf) == 0) |
415 | break; | |
416 | } | |
417 | ||
418 | /* | |
419 | * Something has gone seriously wrong, fail gracefully | |
420 | */ | |
421 | if (!nh) | |
422 | return; | |
423 | ||
424 | list_delete_node(nhgc->nhg_list, node); | |
e5a501c2 | 425 | nhgl_delete(nh); |
c57bd6bb DS |
426 | } |
427 | ||
98cbbaea DS |
428 | static bool nexthop_group_parse_nexthop(struct nexthop *nhop, |
429 | const union sockunion *addr, | |
430 | const char *intf, const char *name) | |
31919191 | 431 | { |
31919191 | 432 | struct vrf *vrf; |
98cbbaea DS |
433 | |
434 | memset(nhop, 0, sizeof(*nhop)); | |
31919191 DS |
435 | |
436 | if (name) | |
437 | vrf = vrf_lookup_by_name(name); | |
438 | else | |
439 | vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
440 | ||
98cbbaea DS |
441 | if (!vrf) |
442 | return false; | |
31919191 | 443 | |
98cbbaea | 444 | nhop->vrf_id = vrf->vrf_id; |
31919191 | 445 | |
1c869b64 RW |
446 | if (intf) { |
447 | nhop->ifindex = ifname2ifindex(intf, vrf->vrf_id); | |
448 | if (nhop->ifindex == IFINDEX_INTERNAL) | |
449 | return false; | |
98cbbaea DS |
450 | } |
451 | ||
1c869b64 RW |
452 | if (addr) { |
453 | if (addr->sa.sa_family == AF_INET) { | |
454 | nhop->gate.ipv4.s_addr = addr->sin.sin_addr.s_addr; | |
455 | if (intf) | |
456 | nhop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
457 | else | |
458 | nhop->type = NEXTHOP_TYPE_IPV4; | |
459 | } else { | |
460 | nhop->gate.ipv6 = addr->sin6.sin6_addr; | |
461 | if (intf) | |
462 | nhop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
463 | else | |
464 | nhop->type = NEXTHOP_TYPE_IPV6; | |
465 | } | |
466 | } else | |
467 | nhop->type = NEXTHOP_TYPE_IFINDEX; | |
468 | ||
98cbbaea DS |
469 | return true; |
470 | } | |
471 | ||
472 | DEFPY(ecmp_nexthops, ecmp_nexthops_cmd, | |
1c869b64 RW |
473 | "[no] nexthop\ |
474 | <\ | |
475 | <A.B.C.D|X:X::X:X>$addr [INTERFACE$intf]\ | |
476 | |INTERFACE$intf\ | |
477 | >\ | |
e429a2a0 | 478 | [nexthop-vrf NAME$vrf_name]", |
98cbbaea DS |
479 | NO_STR |
480 | "Specify one of the nexthops in this ECMP group\n" | |
481 | "v4 Address\n" | |
482 | "v6 Address\n" | |
483 | "Interface to use\n" | |
1c869b64 | 484 | "Interface to use\n" |
98cbbaea DS |
485 | "If the nexthop is in a different vrf tell us\n" |
486 | "The nexthop-vrf Name\n") | |
487 | { | |
488 | VTY_DECLVAR_CONTEXT(nexthop_group_cmd, nhgc); | |
489 | struct nexthop nhop; | |
490 | struct nexthop *nh; | |
491 | bool legal; | |
492 | ||
e429a2a0 | 493 | legal = nexthop_group_parse_nexthop(&nhop, addr, intf, vrf_name); |
98cbbaea DS |
494 | |
495 | if (nhop.type == NEXTHOP_TYPE_IPV6 | |
496 | && IN6_IS_ADDR_LINKLOCAL(&nhop.gate.ipv6)) { | |
497 | vty_out(vty, | |
498 | "Specified a v6 LL with no interface, rejecting\n"); | |
499 | return CMD_WARNING_CONFIG_FAILED; | |
31919191 DS |
500 | } |
501 | ||
502 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
503 | ||
504 | if (no) { | |
e429a2a0 | 505 | nexthop_group_unsave_nhop(nhgc, vrf_name, addr, intf); |
31919191 | 506 | if (nh) { |
50d89650 | 507 | _nexthop_del(&nhgc->nhg, nh); |
31919191 DS |
508 | |
509 | if (nhg_hooks.del_nexthop) | |
510 | nhg_hooks.del_nexthop(nhgc, nh); | |
511 | ||
512 | nexthop_free(nh); | |
513 | } | |
514 | } else if (!nh) { | |
515 | /* must be adding new nexthop since !no and !nexthop_exists */ | |
98cbbaea DS |
516 | if (legal) { |
517 | nh = nexthop_new(); | |
31919191 | 518 | |
98cbbaea | 519 | memcpy(nh, &nhop, sizeof(nhop)); |
50d89650 | 520 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea | 521 | } |
31919191 | 522 | |
e429a2a0 | 523 | nexthop_group_save_nhop(nhgc, vrf_name, addr, intf); |
c57bd6bb | 524 | |
98cbbaea | 525 | if (legal && nhg_hooks.add_nexthop) |
31919191 DS |
526 | nhg_hooks.add_nexthop(nhgc, nh); |
527 | } | |
528 | ||
dba32923 DS |
529 | return CMD_SUCCESS; |
530 | } | |
531 | ||
532 | struct cmd_node nexthop_group_node = { | |
533 | NH_GROUP_NODE, | |
534 | "%s(config-nh-group)# ", | |
535 | 1 | |
536 | }; | |
537 | ||
1b7bce04 DS |
538 | void nexthop_group_write_nexthop(struct vty *vty, struct nexthop *nh) |
539 | { | |
540 | char buf[100]; | |
541 | struct vrf *vrf; | |
542 | ||
57cdafc4 | 543 | vty_out(vty, "nexthop "); |
1b7bce04 DS |
544 | |
545 | switch (nh->type) { | |
546 | case NEXTHOP_TYPE_IFINDEX: | |
547 | vty_out(vty, "%s", ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
548 | break; | |
549 | case NEXTHOP_TYPE_IPV4: | |
550 | vty_out(vty, "%s", inet_ntoa(nh->gate.ipv4)); | |
551 | break; | |
552 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
553 | vty_out(vty, "%s %s", inet_ntoa(nh->gate.ipv4), | |
554 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
555 | break; | |
556 | case NEXTHOP_TYPE_IPV6: | |
557 | vty_out(vty, "%s", | |
558 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf))); | |
559 | break; | |
560 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
561 | vty_out(vty, "%s %s", | |
562 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf)), | |
563 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
564 | break; | |
565 | case NEXTHOP_TYPE_BLACKHOLE: | |
566 | break; | |
567 | } | |
568 | ||
569 | if (nh->vrf_id != VRF_DEFAULT) { | |
570 | vrf = vrf_lookup_by_id(nh->vrf_id); | |
571 | vty_out(vty, " nexthop-vrf %s", vrf->name); | |
572 | } | |
573 | vty_out(vty, "\n"); | |
574 | } | |
575 | ||
c57bd6bb DS |
576 | static void nexthop_group_write_nexthop_internal(struct vty *vty, |
577 | struct nexthop_hold *nh) | |
578 | { | |
579 | char buf[100]; | |
580 | ||
1c869b64 | 581 | vty_out(vty, "nexthop"); |
c57bd6bb | 582 | |
1c869b64 RW |
583 | if (nh->addr) |
584 | vty_out(vty, " %s", sockunion2str(nh->addr, buf, sizeof(buf))); | |
c57bd6bb DS |
585 | |
586 | if (nh->intf) | |
587 | vty_out(vty, " %s", nh->intf); | |
588 | ||
589 | if (nh->nhvrf_name) | |
590 | vty_out(vty, " nexthop-vrf %s", nh->nhvrf_name); | |
591 | ||
592 | vty_out(vty, "\n"); | |
593 | } | |
594 | ||
dba32923 DS |
595 | static int nexthop_group_write(struct vty *vty) |
596 | { | |
31919191 | 597 | struct nexthop_group_cmd *nhgc; |
c57bd6bb | 598 | struct nexthop_hold *nh; |
31919191 DS |
599 | |
600 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
c57bd6bb DS |
601 | struct listnode *node; |
602 | ||
31919191 DS |
603 | vty_out(vty, "nexthop-group %s\n", nhgc->name); |
604 | ||
c57bd6bb | 605 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { |
7dce96f0 | 606 | vty_out(vty, " "); |
c57bd6bb | 607 | nexthop_group_write_nexthop_internal(vty, nh); |
811f859f | 608 | } |
31919191 | 609 | |
31919191 DS |
610 | vty_out(vty, "!\n"); |
611 | } | |
dba32923 DS |
612 | |
613 | return 1; | |
614 | } | |
615 | ||
98cbbaea DS |
616 | void nexthop_group_enable_vrf(struct vrf *vrf) |
617 | { | |
618 | struct nexthop_group_cmd *nhgc; | |
619 | struct nexthop_hold *nhh; | |
620 | ||
621 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
622 | struct listnode *node; | |
623 | ||
624 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
625 | struct nexthop nhop; | |
626 | struct nexthop *nh; | |
627 | ||
b43bb64f | 628 | if (!nexthop_group_parse_nexthop(&nhop, nhh->addr, |
98cbbaea DS |
629 | nhh->intf, |
630 | nhh->nhvrf_name)) | |
631 | continue; | |
632 | ||
633 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
634 | ||
635 | if (nh) | |
636 | continue; | |
637 | ||
638 | if (nhop.vrf_id != vrf->vrf_id) | |
639 | continue; | |
640 | ||
641 | nh = nexthop_new(); | |
642 | ||
643 | memcpy(nh, &nhop, sizeof(nhop)); | |
50d89650 | 644 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea DS |
645 | |
646 | if (nhg_hooks.add_nexthop) | |
647 | nhg_hooks.add_nexthop(nhgc, nh); | |
648 | } | |
649 | } | |
650 | } | |
651 | ||
652 | void nexthop_group_disable_vrf(struct vrf *vrf) | |
653 | { | |
654 | struct nexthop_group_cmd *nhgc; | |
655 | struct nexthop_hold *nhh; | |
656 | ||
657 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
658 | struct listnode *node; | |
659 | ||
660 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
661 | struct nexthop nhop; | |
662 | struct nexthop *nh; | |
663 | ||
b43bb64f | 664 | if (!nexthop_group_parse_nexthop(&nhop, nhh->addr, |
98cbbaea DS |
665 | nhh->intf, |
666 | nhh->nhvrf_name)) | |
667 | continue; | |
668 | ||
669 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
670 | ||
671 | if (!nh) | |
672 | continue; | |
673 | ||
674 | if (nh->vrf_id != vrf->vrf_id) | |
675 | continue; | |
676 | ||
50d89650 | 677 | _nexthop_del(&nhgc->nhg, nh); |
98cbbaea DS |
678 | |
679 | if (nhg_hooks.del_nexthop) | |
680 | nhg_hooks.del_nexthop(nhgc, nh); | |
681 | ||
682 | nexthop_free(nh); | |
683 | } | |
684 | } | |
685 | } | |
686 | ||
687 | void nexthop_group_interface_state_change(struct interface *ifp, | |
688 | ifindex_t oldifindex) | |
689 | { | |
690 | struct nexthop_group_cmd *nhgc; | |
691 | struct nexthop_hold *nhh; | |
692 | ||
693 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
694 | struct listnode *node; | |
695 | struct nexthop *nh; | |
696 | ||
697 | if (if_is_up(ifp)) { | |
698 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
699 | struct nexthop nhop; | |
700 | ||
701 | if (!nexthop_group_parse_nexthop( | |
b43bb64f | 702 | &nhop, nhh->addr, nhh->intf, |
98cbbaea DS |
703 | nhh->nhvrf_name)) |
704 | continue; | |
705 | ||
706 | switch (nhop.type) { | |
707 | case NEXTHOP_TYPE_IPV4: | |
708 | case NEXTHOP_TYPE_IPV6: | |
709 | case NEXTHOP_TYPE_BLACKHOLE: | |
710 | continue; | |
711 | case NEXTHOP_TYPE_IFINDEX: | |
712 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
713 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
714 | break; | |
715 | } | |
716 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
717 | ||
718 | if (nh) | |
719 | continue; | |
720 | ||
721 | if (ifp->ifindex != nhop.ifindex) | |
722 | continue; | |
723 | ||
724 | nh = nexthop_new(); | |
725 | ||
726 | memcpy(nh, &nhop, sizeof(nhop)); | |
50d89650 | 727 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea DS |
728 | |
729 | if (nhg_hooks.add_nexthop) | |
730 | nhg_hooks.add_nexthop(nhgc, nh); | |
731 | } | |
732 | } else { | |
733 | struct nexthop *next_nh; | |
734 | ||
735 | for (nh = nhgc->nhg.nexthop; nh; nh = next_nh) { | |
736 | next_nh = nh->next; | |
737 | switch (nh->type) { | |
738 | case NEXTHOP_TYPE_IPV4: | |
739 | case NEXTHOP_TYPE_IPV6: | |
740 | case NEXTHOP_TYPE_BLACKHOLE: | |
741 | continue; | |
742 | case NEXTHOP_TYPE_IFINDEX: | |
743 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
744 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
745 | break; | |
746 | } | |
747 | ||
748 | if (oldifindex != nh->ifindex) | |
749 | continue; | |
750 | ||
50d89650 | 751 | _nexthop_del(&nhgc->nhg, nh); |
98cbbaea DS |
752 | |
753 | if (nhg_hooks.del_nexthop) | |
754 | nhg_hooks.del_nexthop(nhgc, nh); | |
755 | ||
756 | nexthop_free(nh); | |
757 | } | |
758 | } | |
759 | } | |
760 | } | |
761 | ||
868ee86c DS |
762 | static void nhg_name_autocomplete(vector comps, struct cmd_token *token) |
763 | { | |
764 | struct nexthop_group_cmd *nhgc; | |
765 | ||
766 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
767 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, nhgc->name)); | |
768 | } | |
769 | } | |
770 | ||
771 | static const struct cmd_variable_handler nhg_name_handlers[] = { | |
772 | {.tokenname = "NHGNAME", .completions = nhg_name_autocomplete}, | |
773 | {.completions = NULL}}; | |
774 | ||
31919191 DS |
775 | void nexthop_group_init(void (*new)(const char *name), |
776 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
777 | const struct nexthop *nhop), | |
778 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
779 | const struct nexthop *nhop), | |
780 | void (*delete)(const char *name)) | |
dba32923 | 781 | { |
31919191 DS |
782 | RB_INIT(nhgc_entry_head, &nhgc_entries); |
783 | ||
868ee86c DS |
784 | cmd_variable_handler_register(nhg_name_handlers); |
785 | ||
dba32923 DS |
786 | install_node(&nexthop_group_node, nexthop_group_write); |
787 | install_element(CONFIG_NODE, &nexthop_group_cmd); | |
31919191 DS |
788 | install_element(CONFIG_NODE, &no_nexthop_group_cmd); |
789 | ||
790 | install_default(NH_GROUP_NODE); | |
791 | install_element(NH_GROUP_NODE, &ecmp_nexthops_cmd); | |
792 | ||
793 | memset(&nhg_hooks, 0, sizeof(nhg_hooks)); | |
794 | ||
795 | if (new) | |
796 | nhg_hooks.new = new; | |
797 | if (add_nexthop) | |
798 | nhg_hooks.add_nexthop = add_nexthop; | |
799 | if (del_nexthop) | |
800 | nhg_hooks.del_nexthop = del_nexthop; | |
801 | if (delete) | |
802 | nhg_hooks.delete = delete; | |
dba32923 | 803 | } |