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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 | |
bf8d3d6a | 35 | DEFINE_MTYPE_STATIC(LIB, NEXTHOP_GROUP, "Nexthop Group"); |
31919191 | 36 | |
db2fede9 MS |
37 | /* |
38 | * Internal struct used to hold nhg config strings | |
39 | */ | |
40 | struct nexthop_hold { | |
41 | char *nhvrf_name; | |
42 | union sockunion *addr; | |
43 | char *intf; | |
54c6fa8e | 44 | bool onlink; |
db2fede9 | 45 | char *labels; |
597371a6 | 46 | uint32_t weight; |
28593bcc | 47 | char *backup_str; |
db2fede9 MS |
48 | }; |
49 | ||
31919191 DS |
50 | struct nexthop_group_hooks { |
51 | void (*new)(const char *name); | |
52 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
53 | const struct nexthop *nhop); | |
54 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
55 | const struct nexthop *nhop); | |
56 | void (*delete)(const char *name); | |
57 | }; | |
58 | ||
59 | static struct nexthop_group_hooks nhg_hooks; | |
60 | ||
61 | static inline int | |
62 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
63 | const struct nexthop_group_cmd *nhgc2); | |
64 | RB_GENERATE(nhgc_entry_head, nexthop_group_cmd, nhgc_entry, | |
65 | nexthop_group_cmd_compare) | |
66 | ||
c17faa4b | 67 | static struct nhgc_entry_head nhgc_entries; |
31919191 DS |
68 | |
69 | static inline int | |
70 | nexthop_group_cmd_compare(const struct nexthop_group_cmd *nhgc1, | |
71 | const struct nexthop_group_cmd *nhgc2) | |
72 | { | |
73 | return strcmp(nhgc1->name, nhgc2->name); | |
74 | } | |
75 | ||
8c15fa95 SW |
76 | static struct nexthop *nexthop_group_tail(const struct nexthop_group *nhg) |
77 | { | |
78 | struct nexthop *nexthop = nhg->nexthop; | |
79 | ||
80 | while (nexthop && nexthop->next) | |
81 | nexthop = nexthop->next; | |
82 | ||
83 | return nexthop; | |
84 | } | |
85 | ||
454192f4 DS |
86 | uint8_t nexthop_group_nexthop_num(const struct nexthop_group *nhg) |
87 | { | |
88 | struct nexthop *nhop; | |
89 | uint8_t num = 0; | |
90 | ||
91 | for (ALL_NEXTHOPS_PTR(nhg, nhop)) | |
92 | num++; | |
93 | ||
94 | return num; | |
95 | } | |
96 | ||
98cda54a SW |
97 | uint8_t nexthop_group_nexthop_num_no_recurse(const struct nexthop_group *nhg) |
98 | { | |
99 | struct nexthop *nhop; | |
100 | uint8_t num = 0; | |
101 | ||
102 | for (nhop = nhg->nexthop; nhop; nhop = nhop->next) | |
103 | num++; | |
104 | ||
105 | return num; | |
106 | } | |
107 | ||
454192f4 DS |
108 | uint8_t nexthop_group_active_nexthop_num(const struct nexthop_group *nhg) |
109 | { | |
110 | struct nexthop *nhop; | |
111 | uint8_t num = 0; | |
112 | ||
113 | for (ALL_NEXTHOPS_PTR(nhg, nhop)) { | |
114 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_ACTIVE)) | |
115 | num++; | |
116 | } | |
117 | ||
118 | return num; | |
119 | } | |
120 | ||
98cda54a SW |
121 | uint8_t |
122 | nexthop_group_active_nexthop_num_no_recurse(const struct nexthop_group *nhg) | |
123 | { | |
124 | struct nexthop *nhop; | |
125 | uint8_t num = 0; | |
126 | ||
127 | for (nhop = nhg->nexthop; nhop; nhop = nhop->next) { | |
128 | if (CHECK_FLAG(nhop->flags, NEXTHOP_FLAG_ACTIVE)) | |
129 | num++; | |
130 | } | |
131 | ||
132 | return num; | |
133 | } | |
134 | ||
8f8d9845 SW |
135 | struct nexthop *nexthop_exists(const struct nexthop_group *nhg, |
136 | const struct nexthop *nh) | |
31919191 DS |
137 | { |
138 | struct nexthop *nexthop; | |
139 | ||
140 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
141 | if (nexthop_same(nh, nexthop)) | |
142 | return nexthop; | |
143 | } | |
144 | ||
145 | return NULL; | |
146 | } | |
147 | ||
4fda105e MS |
148 | /* |
149 | * Helper that locates a nexthop in an nhg config list. Note that | |
150 | * this uses a specific matching / equality rule that's different from | |
151 | * the complete match performed by 'nexthop_same()'. | |
152 | */ | |
153 | static struct nexthop *nhg_nh_find(const struct nexthop_group *nhg, | |
154 | const struct nexthop *nh) | |
155 | { | |
156 | struct nexthop *nexthop; | |
157 | int ret; | |
158 | ||
159 | /* We compare: vrf, gateway, and interface */ | |
160 | ||
161 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
162 | ||
163 | /* Compare vrf and type */ | |
164 | if (nexthop->vrf_id != nh->vrf_id) | |
165 | continue; | |
166 | if (nexthop->type != nh->type) | |
167 | continue; | |
168 | ||
169 | /* Compare gateway */ | |
170 | switch (nexthop->type) { | |
171 | case NEXTHOP_TYPE_IPV4: | |
172 | case NEXTHOP_TYPE_IPV6: | |
173 | ret = nexthop_g_addr_cmp(nexthop->type, | |
174 | &nexthop->gate, &nh->gate); | |
175 | if (ret != 0) | |
176 | continue; | |
177 | break; | |
178 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
179 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
180 | ret = nexthop_g_addr_cmp(nexthop->type, | |
181 | &nexthop->gate, &nh->gate); | |
182 | if (ret != 0) | |
183 | continue; | |
184 | /* Intentional Fall-Through */ | |
185 | case NEXTHOP_TYPE_IFINDEX: | |
186 | if (nexthop->ifindex != nh->ifindex) | |
187 | continue; | |
188 | break; | |
189 | case NEXTHOP_TYPE_BLACKHOLE: | |
190 | if (nexthop->bh_type != nh->bh_type) | |
191 | continue; | |
192 | break; | |
193 | } | |
194 | ||
195 | return nexthop; | |
196 | } | |
197 | ||
198 | return NULL; | |
199 | } | |
200 | ||
f17f2c5d SW |
201 | static bool |
202 | nexthop_group_equal_common(const struct nexthop_group *nhg1, | |
203 | const struct nexthop_group *nhg2, | |
204 | uint8_t (*nexthop_group_nexthop_num_func)( | |
205 | const struct nexthop_group *nhg)) | |
8f8d9845 | 206 | { |
8f8d9845 SW |
207 | if (nhg1 && !nhg2) |
208 | return false; | |
209 | ||
9c387098 | 210 | if (!nhg1 && nhg2) |
8f8d9845 SW |
211 | return false; |
212 | ||
dd9546e1 SW |
213 | if (nhg1 == nhg2) |
214 | return true; | |
215 | ||
f17f2c5d SW |
216 | if (nexthop_group_nexthop_num_func(nhg1) |
217 | != nexthop_group_nexthop_num_func(nhg2)) | |
218 | return false; | |
219 | ||
220 | return true; | |
221 | } | |
222 | ||
223 | /* This assumes ordered */ | |
224 | bool nexthop_group_equal_no_recurse(const struct nexthop_group *nhg1, | |
225 | const struct nexthop_group *nhg2) | |
226 | { | |
227 | struct nexthop *nh1 = NULL; | |
228 | struct nexthop *nh2 = NULL; | |
229 | ||
230 | if (!nexthop_group_equal_common(nhg1, nhg2, | |
231 | &nexthop_group_nexthop_num_no_recurse)) | |
8f8d9845 SW |
232 | return false; |
233 | ||
2171b19c | 234 | for (nh1 = nhg1->nexthop, nh2 = nhg2->nexthop; nh1 || nh2; |
12ec584d | 235 | nh1 = nh1->next, nh2 = nh2->next) { |
dd9546e1 SW |
236 | if (nh1 && !nh2) |
237 | return false; | |
238 | if (!nh1 && nh2) | |
239 | return false; | |
12ec584d | 240 | if (!nexthop_same(nh1, nh2)) |
8f8d9845 SW |
241 | return false; |
242 | } | |
243 | ||
244 | return true; | |
245 | } | |
246 | ||
2171b19c SW |
247 | /* This assumes ordered */ |
248 | bool nexthop_group_equal(const struct nexthop_group *nhg1, | |
249 | const struct nexthop_group *nhg2) | |
250 | { | |
251 | struct nexthop *nh1 = NULL; | |
252 | struct nexthop *nh2 = NULL; | |
253 | ||
f17f2c5d | 254 | if (!nexthop_group_equal_common(nhg1, nhg2, &nexthop_group_nexthop_num)) |
2171b19c SW |
255 | return false; |
256 | ||
257 | for (nh1 = nhg1->nexthop, nh2 = nhg2->nexthop; nh1 || nh2; | |
258 | nh1 = nexthop_next(nh1), nh2 = nexthop_next(nh2)) { | |
dd9546e1 SW |
259 | if (nh1 && !nh2) |
260 | return false; | |
261 | if (!nh1 && nh2) | |
262 | return false; | |
2171b19c SW |
263 | if (!nexthop_same(nh1, nh2)) |
264 | return false; | |
265 | } | |
266 | ||
267 | return true; | |
268 | } | |
31919191 DS |
269 | struct nexthop_group *nexthop_group_new(void) |
270 | { | |
271 | return XCALLOC(MTYPE_NEXTHOP_GROUP, sizeof(struct nexthop_group)); | |
272 | } | |
273 | ||
c13bfa74 MS |
274 | void nexthop_group_copy(struct nexthop_group *to, |
275 | const struct nexthop_group *from) | |
6c8b51e1 DS |
276 | { |
277 | /* Copy everything, including recursive info */ | |
278 | copy_nexthops(&to->nexthop, from->nexthop, NULL); | |
279 | } | |
280 | ||
31919191 | 281 | void nexthop_group_delete(struct nexthop_group **nhg) |
0c8215cb | 282 | { |
e4a1ec74 MS |
283 | /* OK to call with NULL group */ |
284 | if ((*nhg) == NULL) | |
285 | return; | |
286 | ||
0c8215cb SW |
287 | if ((*nhg)->nexthop) |
288 | nexthops_free((*nhg)->nexthop); | |
d3a35138 SW |
289 | |
290 | XFREE(MTYPE_NEXTHOP_GROUP, *nhg); | |
0c8215cb SW |
291 | } |
292 | ||
7ee30f28 | 293 | /* Add nexthop to the end of a nexthop list. */ |
50d89650 | 294 | void _nexthop_add(struct nexthop **target, struct nexthop *nexthop) |
7ee30f28 DS |
295 | { |
296 | struct nexthop *last; | |
297 | ||
298 | for (last = *target; last && last->next; last = last->next) | |
299 | ; | |
300 | if (last) | |
301 | last->next = nexthop; | |
302 | else | |
303 | *target = nexthop; | |
304 | nexthop->prev = last; | |
305 | } | |
306 | ||
e1f3a8eb MS |
307 | /* Add nexthop to sorted list of nexthops */ |
308 | static void _nexthop_add_sorted(struct nexthop **head, | |
309 | struct nexthop *nexthop) | |
6c8b51e1 | 310 | { |
e1f3a8eb | 311 | struct nexthop *position, *prev; |
8c15fa95 | 312 | |
89ca64c9 | 313 | assert(!nexthop->next); |
6c8b51e1 | 314 | |
e1f3a8eb | 315 | for (position = *head, prev = NULL; position; |
6c8b51e1 DS |
316 | prev = position, position = position->next) { |
317 | if (nexthop_cmp(position, nexthop) > 0) { | |
318 | nexthop->next = position; | |
319 | nexthop->prev = prev; | |
320 | ||
321 | if (nexthop->prev) | |
322 | nexthop->prev->next = nexthop; | |
323 | else | |
e1f3a8eb | 324 | *head = nexthop; |
6c8b51e1 DS |
325 | |
326 | position->prev = nexthop; | |
327 | return; | |
328 | } | |
329 | } | |
330 | ||
331 | nexthop->prev = prev; | |
332 | if (prev) | |
333 | prev->next = nexthop; | |
334 | else | |
e1f3a8eb MS |
335 | *head = nexthop; |
336 | } | |
337 | ||
338 | void nexthop_group_add_sorted(struct nexthop_group *nhg, | |
339 | struct nexthop *nexthop) | |
340 | { | |
341 | struct nexthop *tail; | |
342 | ||
89ca64c9 SW |
343 | assert(!nexthop->next); |
344 | ||
e1f3a8eb MS |
345 | /* Try to just append to the end first; |
346 | * trust the list is already sorted | |
347 | */ | |
348 | tail = nexthop_group_tail(nhg); | |
349 | ||
350 | if (tail && (nexthop_cmp(tail, nexthop) < 0)) { | |
351 | tail->next = nexthop; | |
352 | nexthop->prev = tail; | |
353 | ||
354 | return; | |
355 | } | |
356 | ||
357 | _nexthop_add_sorted(&nhg->nexthop, nexthop); | |
6c8b51e1 DS |
358 | } |
359 | ||
31919191 | 360 | /* Delete nexthop from a nexthop list. */ |
50d89650 | 361 | void _nexthop_del(struct nexthop_group *nhg, struct nexthop *nh) |
31919191 DS |
362 | { |
363 | struct nexthop *nexthop; | |
364 | ||
365 | for (nexthop = nhg->nexthop; nexthop; nexthop = nexthop->next) { | |
366 | if (nexthop_same(nh, nexthop)) | |
367 | break; | |
368 | } | |
369 | ||
370 | assert(nexthop); | |
371 | ||
372 | if (nexthop->prev) | |
373 | nexthop->prev->next = nexthop->next; | |
374 | else | |
375 | nhg->nexthop = nexthop->next; | |
376 | ||
377 | if (nexthop->next) | |
378 | nexthop->next->prev = nexthop->prev; | |
ebee2bc4 DS |
379 | |
380 | nh->prev = NULL; | |
381 | nh->next = NULL; | |
31919191 DS |
382 | } |
383 | ||
4fda105e MS |
384 | /* Unlink a nexthop from the list it's on, unconditionally */ |
385 | static void nexthop_unlink(struct nexthop_group *nhg, struct nexthop *nexthop) | |
386 | { | |
387 | ||
388 | if (nexthop->prev) | |
389 | nexthop->prev->next = nexthop->next; | |
390 | else { | |
391 | assert(nhg->nexthop == nexthop); | |
392 | assert(nexthop->prev == NULL); | |
393 | nhg->nexthop = nexthop->next; | |
394 | } | |
395 | ||
396 | if (nexthop->next) | |
397 | nexthop->next->prev = nexthop->prev; | |
398 | ||
399 | nexthop->prev = NULL; | |
400 | nexthop->next = NULL; | |
401 | } | |
402 | ||
e1f3a8eb MS |
403 | /* |
404 | * Copy a list of nexthops in 'nh' to an nhg, enforcing canonical sort order | |
405 | */ | |
406 | void nexthop_group_copy_nh_sorted(struct nexthop_group *nhg, | |
407 | const struct nexthop *nh) | |
408 | { | |
409 | struct nexthop *nexthop, *tail; | |
410 | const struct nexthop *nh1; | |
411 | ||
412 | /* We'll try to append to the end of the new list; | |
413 | * if the original list in nh is already sorted, this eliminates | |
414 | * lots of comparison operations. | |
415 | */ | |
416 | tail = nexthop_group_tail(nhg); | |
417 | ||
418 | for (nh1 = nh; nh1; nh1 = nh1->next) { | |
419 | nexthop = nexthop_dup(nh1, NULL); | |
420 | ||
421 | if (tail && (nexthop_cmp(tail, nexthop) < 0)) { | |
422 | tail->next = nexthop; | |
423 | nexthop->prev = tail; | |
424 | ||
425 | tail = nexthop; | |
426 | continue; | |
427 | } | |
428 | ||
429 | _nexthop_add_sorted(&nhg->nexthop, nexthop); | |
430 | ||
431 | if (tail == NULL) | |
432 | tail = nexthop; | |
433 | } | |
434 | } | |
435 | ||
436 | /* Copy a list of nexthops, no effort made to sort or order them. */ | |
deff170e | 437 | void copy_nexthops(struct nexthop **tnh, const struct nexthop *nh, |
7ee30f28 DS |
438 | struct nexthop *rparent) |
439 | { | |
440 | struct nexthop *nexthop; | |
deff170e | 441 | const struct nexthop *nh1; |
7ee30f28 DS |
442 | |
443 | for (nh1 = nh; nh1; nh1 = nh1->next) { | |
504d0a40 | 444 | nexthop = nexthop_dup(nh1, rparent); |
50d89650 | 445 | _nexthop_add(tnh, nexthop); |
7ee30f28 DS |
446 | } |
447 | } | |
dba32923 | 448 | |
2f000944 | 449 | uint32_t nexthop_group_hash_no_recurse(const struct nexthop_group *nhg) |
1b1fe1c4 SW |
450 | { |
451 | struct nexthop *nh; | |
452 | uint32_t key = 0; | |
453 | ||
454 | /* | |
455 | * We are not interested in hashing over any recursively | |
456 | * resolved nexthops | |
457 | */ | |
458 | for (nh = nhg->nexthop; nh; nh = nh->next) | |
459 | key = jhash_1word(nexthop_hash(nh), key); | |
460 | ||
461 | return key; | |
2f000944 SW |
462 | } |
463 | ||
464 | uint32_t nexthop_group_hash(const struct nexthop_group *nhg) | |
465 | { | |
466 | struct nexthop *nh; | |
467 | uint32_t key = 0; | |
468 | ||
469 | for (ALL_NEXTHOPS_PTR(nhg, nh)) | |
470 | key = jhash_1word(nexthop_hash(nh), key); | |
471 | ||
472 | return key; | |
1b1fe1c4 SW |
473 | } |
474 | ||
9ef49038 SW |
475 | void nexthop_group_mark_duplicates(struct nexthop_group *nhg) |
476 | { | |
477 | struct nexthop *nexthop, *prev; | |
478 | ||
479 | for (ALL_NEXTHOPS_PTR(nhg, nexthop)) { | |
480 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE); | |
481 | for (ALL_NEXTHOPS_PTR(nhg, prev)) { | |
482 | if (prev == nexthop) | |
483 | break; | |
7403e155 | 484 | if (nexthop_same(nexthop, prev)) { |
9ef49038 SW |
485 | SET_FLAG(nexthop->flags, |
486 | NEXTHOP_FLAG_DUPLICATE); | |
487 | break; | |
488 | } | |
489 | } | |
490 | } | |
491 | } | |
492 | ||
31919191 DS |
493 | static void nhgc_delete_nexthops(struct nexthop_group_cmd *nhgc) |
494 | { | |
495 | struct nexthop *nexthop; | |
496 | ||
497 | nexthop = nhgc->nhg.nexthop; | |
498 | while (nexthop) { | |
499 | struct nexthop *next = nexthop_next(nexthop); | |
500 | ||
50d89650 | 501 | _nexthop_del(&nhgc->nhg, nexthop); |
31919191 DS |
502 | if (nhg_hooks.del_nexthop) |
503 | nhg_hooks.del_nexthop(nhgc, nexthop); | |
504 | ||
505 | nexthop_free(nexthop); | |
506 | ||
507 | nexthop = next; | |
508 | } | |
509 | } | |
510 | ||
d604266c | 511 | struct nexthop_group_cmd *nhgc_find(const char *name) |
31919191 DS |
512 | { |
513 | struct nexthop_group_cmd find; | |
514 | ||
515 | strlcpy(find.name, name, sizeof(find.name)); | |
516 | ||
517 | return RB_FIND(nhgc_entry_head, &nhgc_entries, &find); | |
518 | } | |
519 | ||
c57bd6bb DS |
520 | static int nhgc_cmp_helper(const char *a, const char *b) |
521 | { | |
522 | if (!a && !b) | |
523 | return 0; | |
524 | ||
525 | if (a && !b) | |
526 | return -1; | |
527 | ||
528 | if (!a && b) | |
529 | return 1; | |
530 | ||
531 | return strcmp(a, b); | |
532 | } | |
533 | ||
1c869b64 RW |
534 | static int nhgc_addr_cmp_helper(const union sockunion *a, const union sockunion *b) |
535 | { | |
536 | if (!a && !b) | |
537 | return 0; | |
538 | ||
539 | if (a && !b) | |
540 | return -1; | |
541 | ||
542 | if (!a && b) | |
543 | return 1; | |
544 | ||
545 | return sockunion_cmp(a, b); | |
546 | } | |
547 | ||
c57bd6bb DS |
548 | static int nhgl_cmp(struct nexthop_hold *nh1, struct nexthop_hold *nh2) |
549 | { | |
550 | int ret; | |
551 | ||
1c869b64 | 552 | ret = nhgc_addr_cmp_helper(nh1->addr, nh2->addr); |
c57bd6bb DS |
553 | if (ret) |
554 | return ret; | |
555 | ||
556 | ret = nhgc_cmp_helper(nh1->intf, nh2->intf); | |
557 | if (ret) | |
558 | return ret; | |
559 | ||
db2fede9 MS |
560 | ret = nhgc_cmp_helper(nh1->nhvrf_name, nh2->nhvrf_name); |
561 | if (ret) | |
562 | return ret; | |
563 | ||
54c6fa8e SW |
564 | ret = ((int)nh2->onlink) - ((int)nh1->onlink); |
565 | if (ret) | |
566 | return ret; | |
567 | ||
db2fede9 | 568 | return nhgc_cmp_helper(nh1->labels, nh2->labels); |
c57bd6bb DS |
569 | } |
570 | ||
571 | static void nhgl_delete(struct nexthop_hold *nh) | |
572 | { | |
0a22ddfb | 573 | XFREE(MTYPE_TMP, nh->intf); |
c57bd6bb | 574 | |
0a22ddfb | 575 | XFREE(MTYPE_TMP, nh->nhvrf_name); |
c57bd6bb | 576 | |
1c869b64 RW |
577 | if (nh->addr) |
578 | sockunion_free(nh->addr); | |
b43bb64f | 579 | |
db2fede9 MS |
580 | XFREE(MTYPE_TMP, nh->labels); |
581 | ||
c57bd6bb DS |
582 | XFREE(MTYPE_TMP, nh); |
583 | } | |
584 | ||
31919191 DS |
585 | static struct nexthop_group_cmd *nhgc_get(const char *name) |
586 | { | |
587 | struct nexthop_group_cmd *nhgc; | |
588 | ||
589 | nhgc = nhgc_find(name); | |
590 | if (!nhgc) { | |
591 | nhgc = XCALLOC(MTYPE_TMP, sizeof(*nhgc)); | |
592 | strlcpy(nhgc->name, name, sizeof(nhgc->name)); | |
593 | ||
594 | QOBJ_REG(nhgc, nexthop_group_cmd); | |
595 | RB_INSERT(nhgc_entry_head, &nhgc_entries, nhgc); | |
596 | ||
c57bd6bb DS |
597 | nhgc->nhg_list = list_new(); |
598 | nhgc->nhg_list->cmp = (int (*)(void *, void *))nhgl_cmp; | |
599 | nhgc->nhg_list->del = (void (*)(void *))nhgl_delete; | |
600 | ||
31919191 DS |
601 | if (nhg_hooks.new) |
602 | nhg_hooks.new(name); | |
603 | } | |
604 | ||
605 | return nhgc; | |
606 | } | |
607 | ||
608 | static void nhgc_delete(struct nexthop_group_cmd *nhgc) | |
dba32923 | 609 | { |
31919191 DS |
610 | nhgc_delete_nexthops(nhgc); |
611 | ||
612 | if (nhg_hooks.delete) | |
613 | nhg_hooks.delete(nhgc->name); | |
614 | ||
615 | RB_REMOVE(nhgc_entry_head, &nhgc_entries, nhgc); | |
c57bd6bb | 616 | |
6a154c88 | 617 | list_delete(&nhgc->nhg_list); |
c57bd6bb | 618 | |
20953065 | 619 | QOBJ_UNREG(nhgc); |
c57bd6bb | 620 | XFREE(MTYPE_TMP, nhgc); |
31919191 DS |
621 | } |
622 | ||
623 | DEFINE_QOBJ_TYPE(nexthop_group_cmd) | |
624 | ||
868ee86c | 625 | DEFUN_NOSH(nexthop_group, nexthop_group_cmd, "nexthop-group NHGNAME", |
31919191 DS |
626 | "Enter into the nexthop-group submode\n" |
627 | "Specify the NAME of the nexthop-group\n") | |
628 | { | |
629 | const char *nhg_name = argv[1]->arg; | |
630 | struct nexthop_group_cmd *nhgc = NULL; | |
631 | ||
632 | nhgc = nhgc_get(nhg_name); | |
633 | VTY_PUSH_CONTEXT(NH_GROUP_NODE, nhgc); | |
634 | ||
635 | return CMD_SUCCESS; | |
636 | } | |
637 | ||
868ee86c | 638 | DEFUN_NOSH(no_nexthop_group, no_nexthop_group_cmd, "no nexthop-group NHGNAME", |
31919191 DS |
639 | NO_STR |
640 | "Delete the nexthop-group\n" | |
641 | "Specify the NAME of the nexthop-group\n") | |
642 | { | |
643 | const char *nhg_name = argv[2]->arg; | |
644 | struct nexthop_group_cmd *nhgc = NULL; | |
645 | ||
646 | nhgc = nhgc_find(nhg_name); | |
647 | if (nhgc) | |
648 | nhgc_delete(nhgc); | |
649 | ||
650 | return CMD_SUCCESS; | |
651 | } | |
652 | ||
0a8881b4 MS |
653 | DEFPY(nexthop_group_backup, nexthop_group_backup_cmd, |
654 | "backup-group WORD$name", | |
655 | "Specify a group name containing backup nexthops\n" | |
656 | "The name of the backup group\n") | |
657 | { | |
658 | VTY_DECLVAR_CONTEXT(nexthop_group_cmd, nhgc); | |
659 | ||
660 | strlcpy(nhgc->backup_list_name, name, sizeof(nhgc->backup_list_name)); | |
661 | ||
662 | return CMD_SUCCESS; | |
663 | } | |
664 | ||
665 | DEFPY(no_nexthop_group_backup, no_nexthop_group_backup_cmd, | |
666 | "no backup-group [WORD$name]", | |
667 | NO_STR | |
668 | "Clear group name containing backup nexthops\n" | |
669 | "The name of the backup group\n") | |
670 | { | |
671 | VTY_DECLVAR_CONTEXT(nexthop_group_cmd, nhgc); | |
672 | ||
673 | nhgc->backup_list_name[0] = 0; | |
674 | ||
675 | return CMD_SUCCESS; | |
676 | } | |
677 | ||
c57bd6bb DS |
678 | static void nexthop_group_save_nhop(struct nexthop_group_cmd *nhgc, |
679 | const char *nhvrf_name, | |
680 | const union sockunion *addr, | |
54c6fa8e SW |
681 | const char *intf, bool onlink, |
682 | const char *labels, const uint32_t weight, | |
28593bcc | 683 | const char *backup_str) |
c57bd6bb DS |
684 | { |
685 | struct nexthop_hold *nh; | |
686 | ||
687 | nh = XCALLOC(MTYPE_TMP, sizeof(*nh)); | |
688 | ||
689 | if (nhvrf_name) | |
690 | nh->nhvrf_name = XSTRDUP(MTYPE_TMP, nhvrf_name); | |
691 | if (intf) | |
692 | nh->intf = XSTRDUP(MTYPE_TMP, intf); | |
1c869b64 RW |
693 | if (addr) |
694 | nh->addr = sockunion_dup(addr); | |
db2fede9 MS |
695 | if (labels) |
696 | nh->labels = XSTRDUP(MTYPE_TMP, labels); | |
c57bd6bb | 697 | |
54c6fa8e SW |
698 | nh->onlink = onlink; |
699 | ||
597371a6 DS |
700 | nh->weight = weight; |
701 | ||
28593bcc MS |
702 | if (backup_str) |
703 | nh->backup_str = XSTRDUP(MTYPE_TMP, backup_str); | |
0a8881b4 | 704 | |
c57bd6bb DS |
705 | listnode_add_sort(nhgc->nhg_list, nh); |
706 | } | |
707 | ||
4fda105e MS |
708 | /* |
709 | * Remove config info about a nexthop from group 'nhgc'. Note that we | |
710 | * use only a subset of the available attributes here to determine | |
711 | * a 'match'. | |
712 | * Note that this doesn't change the list of nexthops, only the config | |
713 | * information. | |
714 | */ | |
c57bd6bb DS |
715 | static void nexthop_group_unsave_nhop(struct nexthop_group_cmd *nhgc, |
716 | const char *nhvrf_name, | |
717 | const union sockunion *addr, | |
4fda105e | 718 | const char *intf) |
c57bd6bb DS |
719 | { |
720 | struct nexthop_hold *nh; | |
721 | struct listnode *node; | |
722 | ||
723 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { | |
597371a6 DS |
724 | if (nhgc_cmp_helper(nhvrf_name, nh->nhvrf_name) == 0 |
725 | && nhgc_addr_cmp_helper(addr, nh->addr) == 0 | |
4fda105e | 726 | && nhgc_cmp_helper(intf, nh->intf) == 0) |
c57bd6bb DS |
727 | break; |
728 | } | |
729 | ||
730 | /* | |
731 | * Something has gone seriously wrong, fail gracefully | |
732 | */ | |
733 | if (!nh) | |
734 | return; | |
735 | ||
736 | list_delete_node(nhgc->nhg_list, node); | |
e5a501c2 | 737 | nhgl_delete(nh); |
c57bd6bb DS |
738 | } |
739 | ||
db2fede9 MS |
740 | /* |
741 | * Parse the config strings we support for a single nexthop. This gets used | |
742 | * in a couple of different ways, and we distinguish between transient | |
743 | * failures - such as a still-unprocessed interface - and fatal errors | |
744 | * from label-string parsing. | |
745 | */ | |
98cbbaea DS |
746 | static bool nexthop_group_parse_nexthop(struct nexthop *nhop, |
747 | const union sockunion *addr, | |
54c6fa8e SW |
748 | const char *intf, bool onlink, |
749 | const char *name, const char *labels, | |
750 | int *lbl_ret, uint32_t weight, | |
751 | const char *backup_str) | |
31919191 | 752 | { |
db2fede9 | 753 | int ret = 0; |
31919191 | 754 | struct vrf *vrf; |
28593bcc | 755 | int num; |
98cbbaea DS |
756 | |
757 | memset(nhop, 0, sizeof(*nhop)); | |
31919191 DS |
758 | |
759 | if (name) | |
760 | vrf = vrf_lookup_by_name(name); | |
761 | else | |
762 | vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
763 | ||
98cbbaea DS |
764 | if (!vrf) |
765 | return false; | |
31919191 | 766 | |
98cbbaea | 767 | nhop->vrf_id = vrf->vrf_id; |
31919191 | 768 | |
1c869b64 RW |
769 | if (intf) { |
770 | nhop->ifindex = ifname2ifindex(intf, vrf->vrf_id); | |
771 | if (nhop->ifindex == IFINDEX_INTERNAL) | |
772 | return false; | |
98cbbaea DS |
773 | } |
774 | ||
54c6fa8e SW |
775 | if (onlink) |
776 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_ONLINK); | |
777 | ||
1c869b64 RW |
778 | if (addr) { |
779 | if (addr->sa.sa_family == AF_INET) { | |
780 | nhop->gate.ipv4.s_addr = addr->sin.sin_addr.s_addr; | |
781 | if (intf) | |
782 | nhop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
783 | else | |
784 | nhop->type = NEXTHOP_TYPE_IPV4; | |
785 | } else { | |
786 | nhop->gate.ipv6 = addr->sin6.sin6_addr; | |
787 | if (intf) | |
788 | nhop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
789 | else | |
790 | nhop->type = NEXTHOP_TYPE_IPV6; | |
791 | } | |
792 | } else | |
793 | nhop->type = NEXTHOP_TYPE_IFINDEX; | |
794 | ||
db2fede9 MS |
795 | if (labels) { |
796 | uint8_t num = 0; | |
797 | mpls_label_t larray[MPLS_MAX_LABELS]; | |
798 | ||
799 | ret = mpls_str2label(labels, &num, larray); | |
800 | ||
801 | /* Return label parse result */ | |
802 | if (lbl_ret) | |
803 | *lbl_ret = ret; | |
804 | ||
805 | if (ret < 0) | |
806 | return false; | |
807 | else if (num > 0) | |
808 | nexthop_add_labels(nhop, ZEBRA_LSP_NONE, | |
809 | num, larray); | |
810 | } | |
811 | ||
597371a6 DS |
812 | nhop->weight = weight; |
813 | ||
28593bcc MS |
814 | if (backup_str) { |
815 | /* Parse backup indexes */ | |
816 | ret = nexthop_str2backups(backup_str, | |
817 | &num, nhop->backup_idx); | |
818 | if (ret == 0) { | |
819 | SET_FLAG(nhop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
820 | nhop->backup_num = num; | |
821 | } else | |
0a8881b4 | 822 | return false; |
0a8881b4 MS |
823 | } |
824 | ||
98cbbaea DS |
825 | return true; |
826 | } | |
827 | ||
db2fede9 MS |
828 | /* |
829 | * Wrapper to parse the strings in a 'nexthop_hold' | |
830 | */ | |
831 | static bool nexthop_group_parse_nhh(struct nexthop *nhop, | |
832 | const struct nexthop_hold *nhh) | |
833 | { | |
54c6fa8e SW |
834 | return (nexthop_group_parse_nexthop( |
835 | nhop, nhh->addr, nhh->intf, nhh->onlink, nhh->nhvrf_name, | |
836 | nhh->labels, NULL, nhh->weight, nhh->backup_str)); | |
db2fede9 MS |
837 | } |
838 | ||
98cbbaea | 839 | DEFPY(ecmp_nexthops, ecmp_nexthops_cmd, |
1c869b64 RW |
840 | "[no] nexthop\ |
841 | <\ | |
54c6fa8e | 842 | <A.B.C.D|X:X::X:X>$addr [INTERFACE$intf [onlink$onlink]]\ |
1c869b64 RW |
843 | |INTERFACE$intf\ |
844 | >\ | |
db2fede9 MS |
845 | [{ \ |
846 | nexthop-vrf NAME$vrf_name \ | |
847 | |label WORD \ | |
597371a6 | 848 | |weight (1-255) \ |
28593bcc | 849 | |backup-idx WORD \ |
db2fede9 | 850 | }]", |
98cbbaea DS |
851 | NO_STR |
852 | "Specify one of the nexthops in this ECMP group\n" | |
853 | "v4 Address\n" | |
854 | "v6 Address\n" | |
855 | "Interface to use\n" | |
54c6fa8e | 856 | "Treat nexthop as directly attached to the interface\n" |
1c869b64 | 857 | "Interface to use\n" |
98cbbaea | 858 | "If the nexthop is in a different vrf tell us\n" |
db2fede9 MS |
859 | "The nexthop-vrf Name\n" |
860 | "Specify label(s) for this nexthop\n" | |
597371a6 DS |
861 | "One or more labels in the range (16-1048575) separated by '/'\n" |
862 | "Weight to be used by the nexthop for purposes of ECMP\n" | |
0a8881b4 | 863 | "Weight value to be used\n" |
28593bcc MS |
864 | "Specify backup nexthop indexes in another group\n" |
865 | "One or more indexes in the range (0-254) separated by ','\n") | |
98cbbaea DS |
866 | { |
867 | VTY_DECLVAR_CONTEXT(nexthop_group_cmd, nhgc); | |
868 | struct nexthop nhop; | |
869 | struct nexthop *nh; | |
db2fede9 | 870 | int lbl_ret = 0; |
98cbbaea | 871 | bool legal; |
28593bcc MS |
872 | int num; |
873 | uint8_t backups[NEXTHOP_MAX_BACKUPS]; | |
4fda105e | 874 | bool yes = !no; |
0a8881b4 | 875 | |
28593bcc MS |
876 | /* Pre-parse backup string to validate */ |
877 | if (backup_idx) { | |
878 | lbl_ret = nexthop_str2backups(backup_idx, &num, backups); | |
879 | if (lbl_ret < 0) { | |
880 | vty_out(vty, "%% Invalid backups\n"); | |
881 | return CMD_WARNING_CONFIG_FAILED; | |
882 | } | |
883 | } | |
98cbbaea | 884 | |
54c6fa8e SW |
885 | legal = nexthop_group_parse_nexthop(&nhop, addr, intf, !!onlink, |
886 | vrf_name, label, &lbl_ret, weight, | |
887 | backup_idx); | |
98cbbaea DS |
888 | |
889 | if (nhop.type == NEXTHOP_TYPE_IPV6 | |
890 | && IN6_IS_ADDR_LINKLOCAL(&nhop.gate.ipv6)) { | |
891 | vty_out(vty, | |
892 | "Specified a v6 LL with no interface, rejecting\n"); | |
893 | return CMD_WARNING_CONFIG_FAILED; | |
31919191 DS |
894 | } |
895 | ||
db2fede9 MS |
896 | /* Handle label-string errors */ |
897 | if (!legal && lbl_ret < 0) { | |
898 | switch (lbl_ret) { | |
899 | case -1: | |
900 | vty_out(vty, "%% Malformed label(s)\n"); | |
901 | break; | |
902 | case -2: | |
903 | vty_out(vty, | |
904 | "%% Cannot use reserved label(s) (%d-%d)\n", | |
905 | MPLS_LABEL_RESERVED_MIN, | |
906 | MPLS_LABEL_RESERVED_MAX); | |
907 | break; | |
908 | case -3: | |
909 | vty_out(vty, | |
910 | "%% Too many labels. Enter %d or fewer\n", | |
911 | MPLS_MAX_LABELS); | |
912 | break; | |
913 | } | |
914 | return CMD_WARNING_CONFIG_FAILED; | |
915 | } | |
916 | ||
4fda105e MS |
917 | /* Look for an existing nexthop in the config. Note that the test |
918 | * here tests only some attributes - it's not a complete comparison. | |
919 | * Note that we've got two kinds of objects to manage: 'nexthop_hold' | |
920 | * that represent config that may or may not be valid (yet), and | |
921 | * actual nexthops that have been validated and parsed. | |
922 | */ | |
923 | nh = nhg_nh_find(&nhgc->nhg, &nhop); | |
31919191 | 924 | |
4fda105e MS |
925 | /* Always attempt to remove old config info. */ |
926 | nexthop_group_unsave_nhop(nhgc, vrf_name, addr, intf); | |
0a8881b4 | 927 | |
4fda105e MS |
928 | /* Remove any existing nexthop, for delete and replace cases. */ |
929 | if (nh) { | |
930 | nexthop_unlink(&nhgc->nhg, nh); | |
31919191 | 931 | |
4fda105e MS |
932 | if (nhg_hooks.del_nexthop) |
933 | nhg_hooks.del_nexthop(nhgc, nh); | |
31919191 | 934 | |
4fda105e | 935 | nexthop_free(nh); |
0a8881b4 | 936 | } |
4fda105e MS |
937 | if (yes) { |
938 | /* Add/replace case: capture nexthop if valid, and capture | |
939 | * config info always. | |
940 | */ | |
98cbbaea DS |
941 | if (legal) { |
942 | nh = nexthop_new(); | |
31919191 | 943 | |
98cbbaea | 944 | memcpy(nh, &nhop, sizeof(nhop)); |
50d89650 | 945 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea | 946 | } |
31919191 | 947 | |
0a8881b4 | 948 | /* Save config always */ |
54c6fa8e SW |
949 | nexthop_group_save_nhop(nhgc, vrf_name, addr, intf, !!onlink, |
950 | label, weight, backup_idx); | |
c57bd6bb | 951 | |
98cbbaea | 952 | if (legal && nhg_hooks.add_nexthop) |
31919191 DS |
953 | nhg_hooks.add_nexthop(nhgc, nh); |
954 | } | |
955 | ||
e7ff0253 DS |
956 | if (intf) { |
957 | struct interface *ifp = if_lookup_by_name_all_vrf(intf); | |
958 | ||
959 | if (ifp) | |
960 | ifp->configured = true; | |
961 | } | |
dba32923 DS |
962 | return CMD_SUCCESS; |
963 | } | |
964 | ||
612c2c15 | 965 | static int nexthop_group_write(struct vty *vty); |
1b3e9a21 | 966 | static struct cmd_node nexthop_group_node = { |
f4b8291f | 967 | .name = "nexthop-group", |
62b346ee | 968 | .node = NH_GROUP_NODE, |
24389580 | 969 | .parent_node = CONFIG_NODE, |
62b346ee | 970 | .prompt = "%s(config-nh-group)# ", |
612c2c15 | 971 | .config_write = nexthop_group_write, |
dba32923 DS |
972 | }; |
973 | ||
79924520 | 974 | void nexthop_group_write_nexthop_simple(struct vty *vty, |
a251884b DS |
975 | const struct nexthop *nh, |
976 | char *altifname) | |
1b7bce04 | 977 | { |
a251884b | 978 | char *ifname; |
1b7bce04 | 979 | |
57cdafc4 | 980 | vty_out(vty, "nexthop "); |
1b7bce04 | 981 | |
a251884b DS |
982 | if (altifname) |
983 | ifname = altifname; | |
984 | else | |
985 | ifname = (char *)ifindex2ifname(nh->ifindex, nh->vrf_id); | |
986 | ||
1b7bce04 DS |
987 | switch (nh->type) { |
988 | case NEXTHOP_TYPE_IFINDEX: | |
a251884b | 989 | vty_out(vty, "%s", ifname); |
1b7bce04 DS |
990 | break; |
991 | case NEXTHOP_TYPE_IPV4: | |
af3b34f6 | 992 | vty_out(vty, "%pI4", &nh->gate.ipv4); |
1b7bce04 DS |
993 | break; |
994 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
af3b34f6 | 995 | vty_out(vty, "%pI4 %s", &nh->gate.ipv4, ifname); |
1b7bce04 DS |
996 | break; |
997 | case NEXTHOP_TYPE_IPV6: | |
af3b34f6 | 998 | vty_out(vty, "%pI6", &nh->gate.ipv6); |
1b7bce04 DS |
999 | break; |
1000 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
af3b34f6 | 1001 | vty_out(vty, "%pI6 %s", &nh->gate.ipv6, ifname); |
1b7bce04 DS |
1002 | break; |
1003 | case NEXTHOP_TYPE_BLACKHOLE: | |
1004 | break; | |
1005 | } | |
79924520 SW |
1006 | } |
1007 | ||
1008 | void nexthop_group_write_nexthop(struct vty *vty, const struct nexthop *nh) | |
1009 | { | |
1010 | struct vrf *vrf; | |
1011 | int i; | |
1012 | ||
a251884b | 1013 | nexthop_group_write_nexthop_simple(vty, nh, NULL); |
1b7bce04 DS |
1014 | |
1015 | if (nh->vrf_id != VRF_DEFAULT) { | |
1016 | vrf = vrf_lookup_by_id(nh->vrf_id); | |
c40e9806 | 1017 | vty_out(vty, " nexthop-vrf %s", VRF_LOGNAME(vrf)); |
1b7bce04 | 1018 | } |
db2fede9 MS |
1019 | |
1020 | if (nh->nh_label && nh->nh_label->num_labels > 0) { | |
1021 | char buf[200]; | |
1022 | ||
1023 | mpls_label2str(nh->nh_label->num_labels, | |
1024 | nh->nh_label->label, | |
1025 | buf, sizeof(buf), 0); | |
1026 | vty_out(vty, " label %s", buf); | |
1027 | } | |
1028 | ||
597371a6 DS |
1029 | if (nh->weight) |
1030 | vty_out(vty, " weight %u", nh->weight); | |
1031 | ||
28593bcc | 1032 | if (CHECK_FLAG(nh->flags, NEXTHOP_FLAG_HAS_BACKUP)) { |
474aebd9 | 1033 | vty_out(vty, " backup-idx %d", nh->backup_idx[0]); |
0a8881b4 | 1034 | |
28593bcc MS |
1035 | for (i = 1; i < nh->backup_num; i++) |
1036 | vty_out(vty, ",%d", nh->backup_idx[i]); | |
1037 | } | |
1038 | ||
1b7bce04 DS |
1039 | vty_out(vty, "\n"); |
1040 | } | |
1041 | ||
28593bcc | 1042 | void nexthop_group_json_nexthop(json_object *j, const struct nexthop *nh) |
010dd8ed WC |
1043 | { |
1044 | char buf[100]; | |
1045 | struct vrf *vrf; | |
28593bcc MS |
1046 | json_object *json_backups = NULL; |
1047 | int i; | |
010dd8ed WC |
1048 | |
1049 | switch (nh->type) { | |
1050 | case NEXTHOP_TYPE_IFINDEX: | |
3e81618d | 1051 | json_object_string_add(j, "nexthop", |
010dd8ed WC |
1052 | ifindex2ifname(nh->ifindex, nh->vrf_id)); |
1053 | break; | |
1054 | case NEXTHOP_TYPE_IPV4: | |
af3b34f6 DA |
1055 | json_object_string_add( |
1056 | j, "nexthop", | |
1057 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, sizeof(buf))); | |
010dd8ed WC |
1058 | break; |
1059 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
af3b34f6 DA |
1060 | json_object_string_add( |
1061 | j, "nexthop", | |
1062 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, sizeof(buf))); | |
010dd8ed WC |
1063 | json_object_string_add(j, "vrfId", |
1064 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
1065 | break; | |
1066 | case NEXTHOP_TYPE_IPV6: | |
1067 | json_object_string_add( | |
3e81618d | 1068 | j, "nexthop", |
010dd8ed WC |
1069 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf))); |
1070 | break; | |
1071 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1072 | json_object_string_add( | |
3e81618d | 1073 | j, "nexthop", |
010dd8ed WC |
1074 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, sizeof(buf))); |
1075 | json_object_string_add(j, "vrfId", | |
1076 | ifindex2ifname(nh->ifindex, nh->vrf_id)); | |
1077 | break; | |
1078 | case NEXTHOP_TYPE_BLACKHOLE: | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | if (nh->vrf_id != VRF_DEFAULT) { | |
1083 | vrf = vrf_lookup_by_id(nh->vrf_id); | |
81c0078e | 1084 | json_object_string_add(j, "targetVrf", vrf->name); |
010dd8ed WC |
1085 | } |
1086 | ||
1087 | if (nh->nh_label && nh->nh_label->num_labels > 0) { | |
1088 | char buf[200]; | |
1089 | ||
1090 | mpls_label2str(nh->nh_label->num_labels, nh->nh_label->label, | |
1091 | buf, sizeof(buf), 0); | |
1092 | json_object_string_add(j, "label", buf); | |
1093 | } | |
1094 | ||
1095 | if (nh->weight) | |
1096 | json_object_int_add(j, "weight", nh->weight); | |
1097 | ||
28593bcc MS |
1098 | if (CHECK_FLAG(nh->flags, NEXTHOP_FLAG_HAS_BACKUP)) { |
1099 | json_backups = json_object_new_array(); | |
1100 | for (i = 0; i < nh->backup_num; i++) | |
1101 | json_object_array_add( | |
1102 | json_backups, | |
1103 | json_object_new_int(nh->backup_idx[i])); | |
1104 | ||
1105 | json_object_object_add(j, "backupIdx", json_backups); | |
1106 | } | |
010dd8ed WC |
1107 | } |
1108 | ||
c57bd6bb | 1109 | static void nexthop_group_write_nexthop_internal(struct vty *vty, |
28593bcc | 1110 | const struct nexthop_hold *nh) |
c57bd6bb DS |
1111 | { |
1112 | char buf[100]; | |
1113 | ||
1c869b64 | 1114 | vty_out(vty, "nexthop"); |
c57bd6bb | 1115 | |
1c869b64 RW |
1116 | if (nh->addr) |
1117 | vty_out(vty, " %s", sockunion2str(nh->addr, buf, sizeof(buf))); | |
c57bd6bb DS |
1118 | |
1119 | if (nh->intf) | |
1120 | vty_out(vty, " %s", nh->intf); | |
1121 | ||
54c6fa8e SW |
1122 | if (nh->onlink) |
1123 | vty_out(vty, " onlink"); | |
1124 | ||
c57bd6bb DS |
1125 | if (nh->nhvrf_name) |
1126 | vty_out(vty, " nexthop-vrf %s", nh->nhvrf_name); | |
1127 | ||
db2fede9 MS |
1128 | if (nh->labels) |
1129 | vty_out(vty, " label %s", nh->labels); | |
1130 | ||
597371a6 DS |
1131 | if (nh->weight) |
1132 | vty_out(vty, " weight %u", nh->weight); | |
1133 | ||
28593bcc MS |
1134 | if (nh->backup_str) |
1135 | vty_out(vty, " backup-idx %s", nh->backup_str); | |
0a8881b4 | 1136 | |
c57bd6bb DS |
1137 | vty_out(vty, "\n"); |
1138 | } | |
1139 | ||
dba32923 DS |
1140 | static int nexthop_group_write(struct vty *vty) |
1141 | { | |
31919191 | 1142 | struct nexthop_group_cmd *nhgc; |
c57bd6bb | 1143 | struct nexthop_hold *nh; |
31919191 DS |
1144 | |
1145 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
c57bd6bb DS |
1146 | struct listnode *node; |
1147 | ||
31919191 DS |
1148 | vty_out(vty, "nexthop-group %s\n", nhgc->name); |
1149 | ||
0a8881b4 MS |
1150 | if (nhgc->backup_list_name[0]) |
1151 | vty_out(vty, " backup-group %s\n", | |
1152 | nhgc->backup_list_name); | |
1153 | ||
c57bd6bb | 1154 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nh)) { |
7dce96f0 | 1155 | vty_out(vty, " "); |
c57bd6bb | 1156 | nexthop_group_write_nexthop_internal(vty, nh); |
811f859f | 1157 | } |
31919191 | 1158 | |
31919191 DS |
1159 | vty_out(vty, "!\n"); |
1160 | } | |
dba32923 DS |
1161 | |
1162 | return 1; | |
1163 | } | |
1164 | ||
98cbbaea DS |
1165 | void nexthop_group_enable_vrf(struct vrf *vrf) |
1166 | { | |
1167 | struct nexthop_group_cmd *nhgc; | |
1168 | struct nexthop_hold *nhh; | |
1169 | ||
1170 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
1171 | struct listnode *node; | |
1172 | ||
1173 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
1174 | struct nexthop nhop; | |
1175 | struct nexthop *nh; | |
1176 | ||
db2fede9 | 1177 | if (!nexthop_group_parse_nhh(&nhop, nhh)) |
98cbbaea DS |
1178 | continue; |
1179 | ||
1180 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
1181 | ||
1182 | if (nh) | |
1183 | continue; | |
1184 | ||
1185 | if (nhop.vrf_id != vrf->vrf_id) | |
1186 | continue; | |
1187 | ||
1188 | nh = nexthop_new(); | |
1189 | ||
1190 | memcpy(nh, &nhop, sizeof(nhop)); | |
50d89650 | 1191 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea DS |
1192 | |
1193 | if (nhg_hooks.add_nexthop) | |
1194 | nhg_hooks.add_nexthop(nhgc, nh); | |
1195 | } | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | void nexthop_group_disable_vrf(struct vrf *vrf) | |
1200 | { | |
1201 | struct nexthop_group_cmd *nhgc; | |
1202 | struct nexthop_hold *nhh; | |
1203 | ||
1204 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
1205 | struct listnode *node; | |
1206 | ||
1207 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
1208 | struct nexthop nhop; | |
1209 | struct nexthop *nh; | |
1210 | ||
db2fede9 | 1211 | if (!nexthop_group_parse_nhh(&nhop, nhh)) |
98cbbaea DS |
1212 | continue; |
1213 | ||
1214 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
1215 | ||
1216 | if (!nh) | |
1217 | continue; | |
1218 | ||
1219 | if (nh->vrf_id != vrf->vrf_id) | |
1220 | continue; | |
1221 | ||
50d89650 | 1222 | _nexthop_del(&nhgc->nhg, nh); |
98cbbaea DS |
1223 | |
1224 | if (nhg_hooks.del_nexthop) | |
1225 | nhg_hooks.del_nexthop(nhgc, nh); | |
1226 | ||
1227 | nexthop_free(nh); | |
1228 | } | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | void nexthop_group_interface_state_change(struct interface *ifp, | |
1233 | ifindex_t oldifindex) | |
1234 | { | |
1235 | struct nexthop_group_cmd *nhgc; | |
1236 | struct nexthop_hold *nhh; | |
1237 | ||
1238 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
1239 | struct listnode *node; | |
1240 | struct nexthop *nh; | |
1241 | ||
1242 | if (if_is_up(ifp)) { | |
1243 | for (ALL_LIST_ELEMENTS_RO(nhgc->nhg_list, node, nhh)) { | |
1244 | struct nexthop nhop; | |
1245 | ||
db2fede9 | 1246 | if (!nexthop_group_parse_nhh(&nhop, nhh)) |
98cbbaea DS |
1247 | continue; |
1248 | ||
1249 | switch (nhop.type) { | |
1250 | case NEXTHOP_TYPE_IPV4: | |
1251 | case NEXTHOP_TYPE_IPV6: | |
1252 | case NEXTHOP_TYPE_BLACKHOLE: | |
1253 | continue; | |
1254 | case NEXTHOP_TYPE_IFINDEX: | |
1255 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1256 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1257 | break; | |
1258 | } | |
1259 | nh = nexthop_exists(&nhgc->nhg, &nhop); | |
1260 | ||
1261 | if (nh) | |
1262 | continue; | |
1263 | ||
1264 | if (ifp->ifindex != nhop.ifindex) | |
1265 | continue; | |
1266 | ||
e7ff0253 | 1267 | ifp->configured = true; |
98cbbaea DS |
1268 | nh = nexthop_new(); |
1269 | ||
1270 | memcpy(nh, &nhop, sizeof(nhop)); | |
50d89650 | 1271 | _nexthop_add(&nhgc->nhg.nexthop, nh); |
98cbbaea DS |
1272 | |
1273 | if (nhg_hooks.add_nexthop) | |
1274 | nhg_hooks.add_nexthop(nhgc, nh); | |
1275 | } | |
1276 | } else { | |
1277 | struct nexthop *next_nh; | |
1278 | ||
1279 | for (nh = nhgc->nhg.nexthop; nh; nh = next_nh) { | |
1280 | next_nh = nh->next; | |
1281 | switch (nh->type) { | |
1282 | case NEXTHOP_TYPE_IPV4: | |
1283 | case NEXTHOP_TYPE_IPV6: | |
1284 | case NEXTHOP_TYPE_BLACKHOLE: | |
1285 | continue; | |
1286 | case NEXTHOP_TYPE_IFINDEX: | |
1287 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1288 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1289 | break; | |
1290 | } | |
1291 | ||
1292 | if (oldifindex != nh->ifindex) | |
1293 | continue; | |
1294 | ||
50d89650 | 1295 | _nexthop_del(&nhgc->nhg, nh); |
98cbbaea DS |
1296 | |
1297 | if (nhg_hooks.del_nexthop) | |
1298 | nhg_hooks.del_nexthop(nhgc, nh); | |
1299 | ||
1300 | nexthop_free(nh); | |
1301 | } | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | ||
868ee86c DS |
1306 | static void nhg_name_autocomplete(vector comps, struct cmd_token *token) |
1307 | { | |
1308 | struct nexthop_group_cmd *nhgc; | |
1309 | ||
1310 | RB_FOREACH (nhgc, nhgc_entry_head, &nhgc_entries) { | |
1311 | vector_set(comps, XSTRDUP(MTYPE_COMPLETION, nhgc->name)); | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | static const struct cmd_variable_handler nhg_name_handlers[] = { | |
1316 | {.tokenname = "NHGNAME", .completions = nhg_name_autocomplete}, | |
1317 | {.completions = NULL}}; | |
1318 | ||
cc6a0d7d SW |
1319 | void nexthop_group_init(void (*new)(const char *name), |
1320 | void (*add_nexthop)(const struct nexthop_group_cmd *nhg, | |
1321 | const struct nexthop *nhop), | |
1322 | void (*del_nexthop)(const struct nexthop_group_cmd *nhg, | |
1323 | const struct nexthop *nhop), | |
1324 | void (*delete)(const char *name)) | |
dba32923 | 1325 | { |
31919191 DS |
1326 | RB_INIT(nhgc_entry_head, &nhgc_entries); |
1327 | ||
868ee86c DS |
1328 | cmd_variable_handler_register(nhg_name_handlers); |
1329 | ||
612c2c15 | 1330 | install_node(&nexthop_group_node); |
dba32923 | 1331 | install_element(CONFIG_NODE, &nexthop_group_cmd); |
31919191 DS |
1332 | install_element(CONFIG_NODE, &no_nexthop_group_cmd); |
1333 | ||
1334 | install_default(NH_GROUP_NODE); | |
0a8881b4 MS |
1335 | install_element(NH_GROUP_NODE, &nexthop_group_backup_cmd); |
1336 | install_element(NH_GROUP_NODE, &no_nexthop_group_backup_cmd); | |
31919191 DS |
1337 | install_element(NH_GROUP_NODE, &ecmp_nexthops_cmd); |
1338 | ||
1339 | memset(&nhg_hooks, 0, sizeof(nhg_hooks)); | |
1340 | ||
1341 | if (new) | |
1342 | nhg_hooks.new = new; | |
1343 | if (add_nexthop) | |
1344 | nhg_hooks.add_nexthop = add_nexthop; | |
1345 | if (del_nexthop) | |
1346 | nhg_hooks.del_nexthop = del_nexthop; | |
1347 | if (delete) | |
1348 | nhg_hooks.delete = delete; | |
dba32923 | 1349 | } |