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fb018d25 DS |
1 | /* A generic nexthop structure |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
a399694f | 4 | * This file is part of Quagga. |
fb018d25 | 5 | * |
a399694f | 6 | * Quagga is free software; you can redistribute it and/or modify it |
fb018d25 DS |
7 | * under the terms of the GNU General Public License as published by the |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
a399694f | 11 | * Quagga is distributed in the hope that it will be useful, but |
fb018d25 DS |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
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 | |
fb018d25 DS |
19 | */ |
20 | #include <zebra.h> | |
21 | ||
22 | #include "prefix.h" | |
23 | #include "table.h" | |
24 | #include "memory.h" | |
fb018d25 | 25 | #include "command.h" |
fb018d25 DS |
26 | #include "log.h" |
27 | #include "sockunion.h" | |
28 | #include "linklist.h" | |
fb018d25 DS |
29 | #include "prefix.h" |
30 | #include "nexthop.h" | |
40c7bdb0 | 31 | #include "mpls.h" |
d36d0d57 | 32 | #include "jhash.h" |
d52ec572 | 33 | #include "printfrr.h" |
f3323df2 | 34 | #include "vrf.h" |
77bf9504 | 35 | #include "nexthop_group.h" |
fb018d25 | 36 | |
bf8d3d6a DL |
37 | DEFINE_MTYPE_STATIC(LIB, NEXTHOP, "Nexthop"); |
38 | DEFINE_MTYPE_STATIC(LIB, NH_LABEL, "Nexthop label"); | |
eab0f8f0 | 39 | DEFINE_MTYPE_STATIC(LIB, NH_SRV6, "Nexthop srv6"); |
4a1ab8e4 | 40 | |
a5a2d802 SW |
41 | static int _nexthop_labels_cmp(const struct nexthop *nh1, |
42 | const struct nexthop *nh2) | |
ebc403dd SW |
43 | { |
44 | const struct mpls_label_stack *nhl1 = NULL; | |
45 | const struct mpls_label_stack *nhl2 = NULL; | |
46 | ||
47 | nhl1 = nh1->nh_label; | |
48 | nhl2 = nh2->nh_label; | |
49 | ||
50 | /* No labels is a match */ | |
51 | if (!nhl1 && !nhl2) | |
52 | return 0; | |
53 | ||
54 | if (nhl1 && !nhl2) | |
55 | return 1; | |
56 | ||
57 | if (nhl2 && !nhl1) | |
58 | return -1; | |
59 | ||
60 | if (nhl1->num_labels > nhl2->num_labels) | |
61 | return 1; | |
62 | ||
63 | if (nhl1->num_labels < nhl2->num_labels) | |
64 | return -1; | |
65 | ||
26dddc01 MS |
66 | return memcmp(nhl1->label, nhl2->label, |
67 | (nhl1->num_labels * sizeof(mpls_label_t))); | |
ebc403dd SW |
68 | } |
69 | ||
eab0f8f0 HS |
70 | static int _nexthop_srv6_cmp(const struct nexthop *nh1, |
71 | const struct nexthop *nh2) | |
cb7775a9 | 72 | { |
eab0f8f0 | 73 | int ret = 0; |
cb7775a9 | 74 | |
eab0f8f0 | 75 | if (!nh1->nh_srv6 && !nh2->nh_srv6) |
cb7775a9 HS |
76 | return 0; |
77 | ||
eab0f8f0 | 78 | if (nh1->nh_srv6 && !nh2->nh_srv6) |
cb7775a9 HS |
79 | return 1; |
80 | ||
eab0f8f0 | 81 | if (!nh1->nh_srv6 && nh2->nh_srv6) |
cb7775a9 HS |
82 | return -1; |
83 | ||
eab0f8f0 | 84 | if (nh1->nh_srv6->seg6local_action > nh2->nh_srv6->seg6local_action) |
2aa01034 HS |
85 | return 1; |
86 | ||
eab0f8f0 | 87 | if (nh2->nh_srv6->seg6local_action < nh1->nh_srv6->seg6local_action) |
2aa01034 HS |
88 | return -1; |
89 | ||
eab0f8f0 HS |
90 | ret = memcmp(&nh1->nh_srv6->seg6local_ctx, |
91 | &nh2->nh_srv6->seg6local_ctx, | |
92 | sizeof(struct seg6local_context)); | |
93 | if (ret != 0) | |
94 | return ret; | |
95 | ||
96 | ret = memcmp(&nh1->nh_srv6->seg6_segs, | |
97 | &nh2->nh_srv6->seg6_segs, | |
98 | sizeof(struct in6_addr)); | |
99 | ||
100 | return ret; | |
2aa01034 HS |
101 | } |
102 | ||
3c6e0bd4 SW |
103 | int nexthop_g_addr_cmp(enum nexthop_types_t type, const union g_addr *addr1, |
104 | const union g_addr *addr2) | |
24cfec84 SW |
105 | { |
106 | int ret = 0; | |
107 | ||
108 | switch (type) { | |
109 | case NEXTHOP_TYPE_IPV4: | |
110 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
111 | ret = IPV4_ADDR_CMP(&addr1->ipv4, &addr2->ipv4); | |
112 | break; | |
113 | case NEXTHOP_TYPE_IPV6: | |
114 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
115 | ret = IPV6_ADDR_CMP(&addr1->ipv6, &addr2->ipv6); | |
116 | break; | |
117 | case NEXTHOP_TYPE_IFINDEX: | |
118 | case NEXTHOP_TYPE_BLACKHOLE: | |
119 | /* No addr here */ | |
120 | break; | |
121 | } | |
122 | ||
123 | return ret; | |
124 | } | |
125 | ||
a5a2d802 SW |
126 | static int _nexthop_gateway_cmp(const struct nexthop *nh1, |
127 | const struct nexthop *nh2) | |
24cfec84 | 128 | { |
3c6e0bd4 | 129 | return nexthop_g_addr_cmp(nh1->type, &nh1->gate, &nh2->gate); |
24cfec84 SW |
130 | } |
131 | ||
a5a2d802 SW |
132 | static int _nexthop_source_cmp(const struct nexthop *nh1, |
133 | const struct nexthop *nh2) | |
24cfec84 | 134 | { |
3c6e0bd4 | 135 | return nexthop_g_addr_cmp(nh1->type, &nh1->src, &nh2->src); |
24cfec84 SW |
136 | } |
137 | ||
a5a2d802 SW |
138 | static int _nexthop_cmp_no_labels(const struct nexthop *next1, |
139 | const struct nexthop *next2) | |
776c3e90 | 140 | { |
ff0e16da | 141 | int ret = 0; |
776c3e90 DS |
142 | |
143 | if (next1->vrf_id < next2->vrf_id) | |
144 | return -1; | |
145 | ||
146 | if (next1->vrf_id > next2->vrf_id) | |
147 | return 1; | |
148 | ||
149 | if (next1->type < next2->type) | |
150 | return -1; | |
151 | ||
152 | if (next1->type > next2->type) | |
153 | return 1; | |
154 | ||
bd054c1a DS |
155 | if (next1->weight < next2->weight) |
156 | return -1; | |
157 | ||
158 | if (next1->weight > next2->weight) | |
159 | return 1; | |
160 | ||
ff0e16da | 161 | switch (next1->type) { |
776c3e90 | 162 | case NEXTHOP_TYPE_IPV4: |
776c3e90 | 163 | case NEXTHOP_TYPE_IPV6: |
a5a2d802 SW |
164 | ret = _nexthop_gateway_cmp(next1, next2); |
165 | if (ret != 0) | |
776c3e90 DS |
166 | return ret; |
167 | break; | |
168 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
169 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a5a2d802 SW |
170 | ret = _nexthop_gateway_cmp(next1, next2); |
171 | if (ret != 0) | |
776c3e90 DS |
172 | return ret; |
173 | /* Intentional Fall-Through */ | |
174 | case NEXTHOP_TYPE_IFINDEX: | |
175 | if (next1->ifindex < next2->ifindex) | |
176 | return -1; | |
177 | ||
178 | if (next1->ifindex > next2->ifindex) | |
179 | return 1; | |
180 | break; | |
181 | case NEXTHOP_TYPE_BLACKHOLE: | |
182 | if (next1->bh_type < next2->bh_type) | |
183 | return -1; | |
184 | ||
185 | if (next1->bh_type > next2->bh_type) | |
186 | return 1; | |
187 | break; | |
188 | } | |
189 | ||
31f937fb SM |
190 | if (next1->srte_color < next2->srte_color) |
191 | return -1; | |
192 | if (next1->srte_color > next2->srte_color) | |
193 | return 1; | |
194 | ||
a5a2d802 | 195 | ret = _nexthop_source_cmp(next1, next2); |
defd2ea4 MS |
196 | if (ret != 0) |
197 | goto done; | |
198 | ||
474aebd9 MS |
199 | if (!CHECK_FLAG(next1->flags, NEXTHOP_FLAG_HAS_BACKUP) && |
200 | !CHECK_FLAG(next2->flags, NEXTHOP_FLAG_HAS_BACKUP)) | |
201 | return 0; | |
202 | ||
defd2ea4 MS |
203 | if (!CHECK_FLAG(next1->flags, NEXTHOP_FLAG_HAS_BACKUP) && |
204 | CHECK_FLAG(next2->flags, NEXTHOP_FLAG_HAS_BACKUP)) | |
205 | return -1; | |
206 | ||
207 | if (CHECK_FLAG(next1->flags, NEXTHOP_FLAG_HAS_BACKUP) && | |
208 | !CHECK_FLAG(next2->flags, NEXTHOP_FLAG_HAS_BACKUP)) | |
209 | return 1; | |
a5a2d802 | 210 | |
474aebd9 MS |
211 | if (next1->backup_num == 0 && next2->backup_num == 0) |
212 | goto done; | |
213 | ||
214 | if (next1->backup_num < next2->backup_num) | |
defd2ea4 MS |
215 | return -1; |
216 | ||
474aebd9 | 217 | if (next1->backup_num > next2->backup_num) |
defd2ea4 MS |
218 | return 1; |
219 | ||
474aebd9 MS |
220 | ret = memcmp(next1->backup_idx, |
221 | next2->backup_idx, next1->backup_num); | |
222 | ||
defd2ea4 | 223 | done: |
a5a2d802 SW |
224 | return ret; |
225 | } | |
226 | ||
227 | int nexthop_cmp(const struct nexthop *next1, const struct nexthop *next2) | |
228 | { | |
229 | int ret = 0; | |
230 | ||
231 | ret = _nexthop_cmp_no_labels(next1, next2); | |
232 | if (ret != 0) | |
ff0e16da SW |
233 | return ret; |
234 | ||
a5a2d802 | 235 | ret = _nexthop_labels_cmp(next1, next2); |
cb7775a9 HS |
236 | if (ret != 0) |
237 | return ret; | |
238 | ||
eab0f8f0 | 239 | ret = _nexthop_srv6_cmp(next1, next2); |
a5a2d802 | 240 | |
776c3e90 DS |
241 | return ret; |
242 | } | |
243 | ||
338ec3b8 MS |
244 | /* |
245 | * More-limited comparison function used to detect duplicate | |
246 | * nexthops. This is used in places where we don't need the full | |
247 | * comparison of 'nexthop_cmp()'. | |
248 | */ | |
249 | int nexthop_cmp_basic(const struct nexthop *nh1, | |
250 | const struct nexthop *nh2) | |
251 | { | |
252 | int ret = 0; | |
253 | const struct mpls_label_stack *nhl1 = NULL; | |
254 | const struct mpls_label_stack *nhl2 = NULL; | |
255 | ||
256 | if (nh1 == NULL && nh2 == NULL) | |
257 | return 0; | |
258 | ||
259 | if (nh1 && !nh2) | |
260 | return 1; | |
261 | ||
262 | if (!nh1 && nh2) | |
263 | return -1; | |
264 | ||
265 | if (nh1->vrf_id < nh2->vrf_id) | |
266 | return -1; | |
267 | ||
268 | if (nh1->vrf_id > nh2->vrf_id) | |
269 | return 1; | |
270 | ||
271 | if (nh1->type < nh2->type) | |
272 | return -1; | |
273 | ||
274 | if (nh1->type > nh2->type) | |
275 | return 1; | |
276 | ||
277 | if (nh1->weight < nh2->weight) | |
278 | return -1; | |
279 | ||
280 | if (nh1->weight > nh2->weight) | |
281 | return 1; | |
282 | ||
283 | switch (nh1->type) { | |
284 | case NEXTHOP_TYPE_IPV4: | |
285 | case NEXTHOP_TYPE_IPV6: | |
286 | ret = nexthop_g_addr_cmp(nh1->type, &nh1->gate, &nh2->gate); | |
287 | if (ret != 0) | |
288 | return ret; | |
289 | break; | |
290 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
291 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
292 | ret = nexthop_g_addr_cmp(nh1->type, &nh1->gate, &nh2->gate); | |
293 | if (ret != 0) | |
294 | return ret; | |
295 | /* Intentional Fall-Through */ | |
296 | case NEXTHOP_TYPE_IFINDEX: | |
297 | if (nh1->ifindex < nh2->ifindex) | |
298 | return -1; | |
299 | ||
300 | if (nh1->ifindex > nh2->ifindex) | |
301 | return 1; | |
302 | break; | |
303 | case NEXTHOP_TYPE_BLACKHOLE: | |
304 | if (nh1->bh_type < nh2->bh_type) | |
305 | return -1; | |
306 | ||
307 | if (nh1->bh_type > nh2->bh_type) | |
308 | return 1; | |
309 | break; | |
310 | } | |
311 | ||
312 | /* Compare source addr */ | |
313 | ret = nexthop_g_addr_cmp(nh1->type, &nh1->src, &nh2->src); | |
314 | if (ret != 0) | |
315 | goto done; | |
316 | ||
317 | nhl1 = nh1->nh_label; | |
318 | nhl2 = nh2->nh_label; | |
319 | ||
320 | /* No labels is a match */ | |
321 | if (!nhl1 && !nhl2) | |
322 | return 0; | |
323 | ||
324 | if (nhl1 && !nhl2) | |
325 | return 1; | |
326 | ||
327 | if (nhl2 && !nhl1) | |
328 | return -1; | |
329 | ||
330 | if (nhl1->num_labels > nhl2->num_labels) | |
331 | return 1; | |
332 | ||
333 | if (nhl1->num_labels < nhl2->num_labels) | |
334 | return -1; | |
335 | ||
336 | ret = memcmp(nhl1->label, nhl2->label, | |
337 | (nhl1->num_labels * sizeof(mpls_label_t))); | |
338 | ||
339 | done: | |
340 | return ret; | |
341 | } | |
342 | ||
fb018d25 DS |
343 | /* |
344 | * nexthop_type_to_str | |
345 | */ | |
d62a17ae | 346 | const char *nexthop_type_to_str(enum nexthop_types_t nh_type) |
fb018d25 | 347 | { |
2b64873d | 348 | static const char *const desc[] = { |
d62a17ae | 349 | "none", "Directly connected", |
350 | "IPv4 nexthop", "IPv4 nexthop with ifindex", | |
351 | "IPv6 nexthop", "IPv6 nexthop with ifindex", | |
352 | "Null0 nexthop", | |
353 | }; | |
354 | ||
355 | return desc[nh_type]; | |
fb018d25 | 356 | } |
a399694f | 357 | |
a64448ba DS |
358 | /* |
359 | * Check if the labels match for the 2 nexthops specified. | |
360 | */ | |
89dc3160 | 361 | bool nexthop_labels_match(const struct nexthop *nh1, const struct nexthop *nh2) |
a64448ba | 362 | { |
a5a2d802 | 363 | if (_nexthop_labels_cmp(nh1, nh2) != 0) |
89dc3160 | 364 | return false; |
a64448ba | 365 | |
89dc3160 | 366 | return true; |
a64448ba DS |
367 | } |
368 | ||
d62a17ae | 369 | struct nexthop *nexthop_new(void) |
a399694f | 370 | { |
e28492ae SW |
371 | struct nexthop *nh; |
372 | ||
373 | nh = XCALLOC(MTYPE_NEXTHOP, sizeof(struct nexthop)); | |
374 | ||
375 | /* | |
376 | * Default the weight to 1 here for all nexthops. | |
377 | * The linux kernel does some weird stuff with adding +1 to | |
378 | * all nexthop weights it gets over netlink. | |
379 | * To handle this, just default everything to 1 right from | |
defd2ea4 | 380 | * from the beginning so we don't have to special case |
e28492ae SW |
381 | * default weights in the linux netlink code. |
382 | * | |
383 | * 1 should be a valid on all platforms anyway. | |
384 | */ | |
385 | nh->weight = 1; | |
386 | ||
387 | return nh; | |
a399694f DS |
388 | } |
389 | ||
a399694f | 390 | /* Free nexthop. */ |
d62a17ae | 391 | void nexthop_free(struct nexthop *nexthop) |
a399694f | 392 | { |
d62a17ae | 393 | nexthop_del_labels(nexthop); |
eab0f8f0 HS |
394 | nexthop_del_srv6_seg6local(nexthop); |
395 | nexthop_del_srv6_seg6(nexthop); | |
d62a17ae | 396 | if (nexthop->resolved) |
397 | nexthops_free(nexthop->resolved); | |
398 | XFREE(MTYPE_NEXTHOP, nexthop); | |
a399694f DS |
399 | } |
400 | ||
401 | /* Frees a list of nexthops */ | |
d62a17ae | 402 | void nexthops_free(struct nexthop *nexthop) |
a399694f | 403 | { |
d62a17ae | 404 | struct nexthop *nh, *next; |
a399694f | 405 | |
d62a17ae | 406 | for (nh = nexthop; nh; nh = next) { |
407 | next = nh->next; | |
408 | nexthop_free(nh); | |
409 | } | |
a399694f | 410 | } |
80c2442a | 411 | |
31919191 DS |
412 | bool nexthop_same(const struct nexthop *nh1, const struct nexthop *nh2) |
413 | { | |
414 | if (nh1 && !nh2) | |
415 | return false; | |
416 | ||
417 | if (!nh1 && nh2) | |
418 | return false; | |
419 | ||
420 | if (nh1 == nh2) | |
421 | return true; | |
422 | ||
2ed74b93 | 423 | if (nexthop_cmp(nh1, nh2) != 0) |
31919191 DS |
424 | return false; |
425 | ||
2ed74b93 | 426 | return true; |
31919191 DS |
427 | } |
428 | ||
a5a2d802 SW |
429 | bool nexthop_same_no_labels(const struct nexthop *nh1, |
430 | const struct nexthop *nh2) | |
431 | { | |
432 | if (nh1 && !nh2) | |
433 | return false; | |
434 | ||
435 | if (!nh1 && nh2) | |
436 | return false; | |
437 | ||
438 | if (nh1 == nh2) | |
439 | return true; | |
440 | ||
441 | if (_nexthop_cmp_no_labels(nh1, nh2) != 0) | |
442 | return false; | |
443 | ||
444 | return true; | |
445 | } | |
446 | ||
f3323df2 MS |
447 | /* |
448 | * Allocate a new nexthop object and initialize it from various args. | |
449 | */ | |
450 | struct nexthop *nexthop_from_ifindex(ifindex_t ifindex, vrf_id_t vrf_id) | |
451 | { | |
452 | struct nexthop *nexthop; | |
453 | ||
454 | nexthop = nexthop_new(); | |
455 | nexthop->type = NEXTHOP_TYPE_IFINDEX; | |
456 | nexthop->ifindex = ifindex; | |
457 | nexthop->vrf_id = vrf_id; | |
458 | ||
459 | return nexthop; | |
460 | } | |
461 | ||
462 | struct nexthop *nexthop_from_ipv4(const struct in_addr *ipv4, | |
463 | const struct in_addr *src, | |
464 | vrf_id_t vrf_id) | |
465 | { | |
466 | struct nexthop *nexthop; | |
467 | ||
468 | nexthop = nexthop_new(); | |
469 | nexthop->type = NEXTHOP_TYPE_IPV4; | |
470 | nexthop->vrf_id = vrf_id; | |
471 | nexthop->gate.ipv4 = *ipv4; | |
472 | if (src) | |
473 | nexthop->src.ipv4 = *src; | |
474 | ||
475 | return nexthop; | |
476 | } | |
477 | ||
478 | struct nexthop *nexthop_from_ipv4_ifindex(const struct in_addr *ipv4, | |
479 | const struct in_addr *src, | |
480 | ifindex_t ifindex, vrf_id_t vrf_id) | |
481 | { | |
482 | struct nexthop *nexthop; | |
483 | ||
484 | nexthop = nexthop_new(); | |
485 | nexthop->type = NEXTHOP_TYPE_IPV4_IFINDEX; | |
486 | nexthop->vrf_id = vrf_id; | |
487 | nexthop->gate.ipv4 = *ipv4; | |
488 | if (src) | |
489 | nexthop->src.ipv4 = *src; | |
490 | nexthop->ifindex = ifindex; | |
491 | ||
492 | return nexthop; | |
493 | } | |
494 | ||
495 | struct nexthop *nexthop_from_ipv6(const struct in6_addr *ipv6, | |
496 | vrf_id_t vrf_id) | |
497 | { | |
498 | struct nexthop *nexthop; | |
499 | ||
500 | nexthop = nexthop_new(); | |
501 | nexthop->vrf_id = vrf_id; | |
502 | nexthop->type = NEXTHOP_TYPE_IPV6; | |
503 | nexthop->gate.ipv6 = *ipv6; | |
504 | ||
505 | return nexthop; | |
506 | } | |
507 | ||
508 | struct nexthop *nexthop_from_ipv6_ifindex(const struct in6_addr *ipv6, | |
509 | ifindex_t ifindex, vrf_id_t vrf_id) | |
510 | { | |
511 | struct nexthop *nexthop; | |
512 | ||
513 | nexthop = nexthop_new(); | |
514 | nexthop->vrf_id = vrf_id; | |
515 | nexthop->type = NEXTHOP_TYPE_IPV6_IFINDEX; | |
516 | nexthop->gate.ipv6 = *ipv6; | |
517 | nexthop->ifindex = ifindex; | |
518 | ||
519 | return nexthop; | |
520 | } | |
521 | ||
0789eb69 KM |
522 | struct nexthop *nexthop_from_blackhole(enum blackhole_type bh_type, |
523 | vrf_id_t nh_vrf_id) | |
f3323df2 MS |
524 | { |
525 | struct nexthop *nexthop; | |
526 | ||
527 | nexthop = nexthop_new(); | |
0789eb69 | 528 | nexthop->vrf_id = nh_vrf_id; |
f3323df2 MS |
529 | nexthop->type = NEXTHOP_TYPE_BLACKHOLE; |
530 | nexthop->bh_type = bh_type; | |
531 | ||
532 | return nexthop; | |
533 | } | |
534 | ||
40c7bdb0 | 535 | /* Update nexthop with label information. */ |
e4a1ec74 MS |
536 | void nexthop_add_labels(struct nexthop *nexthop, enum lsp_types_t ltype, |
537 | uint8_t num_labels, const mpls_label_t *labels) | |
40c7bdb0 | 538 | { |
8ecdb26e | 539 | struct mpls_label_stack *nh_label; |
d62a17ae | 540 | int i; |
541 | ||
054af19a MS |
542 | if (num_labels == 0) |
543 | return; | |
544 | ||
e4a1ec74 MS |
545 | /* Enforce limit on label stack size */ |
546 | if (num_labels > MPLS_MAX_LABELS) | |
547 | num_labels = MPLS_MAX_LABELS; | |
548 | ||
549 | nexthop->nh_label_type = ltype; | |
550 | ||
d62a17ae | 551 | nh_label = XCALLOC(MTYPE_NH_LABEL, |
8ecdb26e | 552 | sizeof(struct mpls_label_stack) |
d62a17ae | 553 | + num_labels * sizeof(mpls_label_t)); |
554 | nh_label->num_labels = num_labels; | |
555 | for (i = 0; i < num_labels; i++) | |
e4a1ec74 | 556 | nh_label->label[i] = *(labels + i); |
d62a17ae | 557 | nexthop->nh_label = nh_label; |
40c7bdb0 | 558 | } |
559 | ||
560 | /* Free label information of nexthop, if present. */ | |
d62a17ae | 561 | void nexthop_del_labels(struct nexthop *nexthop) |
40c7bdb0 | 562 | { |
fe86c6b3 QY |
563 | XFREE(MTYPE_NH_LABEL, nexthop->nh_label); |
564 | nexthop->nh_label_type = ZEBRA_LSP_NONE; | |
40c7bdb0 | 565 | } |
566 | ||
eab0f8f0 HS |
567 | void nexthop_add_srv6_seg6local(struct nexthop *nexthop, uint32_t action, |
568 | const struct seg6local_context *ctx) | |
cb7775a9 | 569 | { |
cb7775a9 HS |
570 | if (action == ZEBRA_SEG6_LOCAL_ACTION_UNSPEC) |
571 | return; | |
572 | ||
eab0f8f0 HS |
573 | if (!nexthop->nh_srv6) |
574 | nexthop->nh_srv6 = XCALLOC(MTYPE_NH_SRV6, | |
575 | sizeof(struct nexthop_srv6)); | |
576 | ||
577 | nexthop->nh_srv6->seg6local_action = action; | |
578 | nexthop->nh_srv6->seg6local_ctx = *ctx; | |
cb7775a9 HS |
579 | } |
580 | ||
eab0f8f0 | 581 | void nexthop_del_srv6_seg6local(struct nexthop *nexthop) |
cb7775a9 | 582 | { |
eab0f8f0 HS |
583 | if (!nexthop->nh_srv6) |
584 | return; | |
585 | ||
586 | nexthop->nh_srv6->seg6local_action = ZEBRA_SEG6_LOCAL_ACTION_UNSPEC; | |
587 | ||
588 | if (sid_zero(&nexthop->nh_srv6->seg6_segs)) | |
589 | XFREE(MTYPE_NH_SRV6, nexthop->nh_srv6); | |
cb7775a9 HS |
590 | } |
591 | ||
eab0f8f0 HS |
592 | void nexthop_add_srv6_seg6(struct nexthop *nexthop, |
593 | const struct in6_addr *segs) | |
2aa01034 | 594 | { |
eab0f8f0 HS |
595 | if (!segs) |
596 | return; | |
597 | ||
598 | if (!nexthop->nh_srv6) | |
599 | nexthop->nh_srv6 = XCALLOC(MTYPE_NH_SRV6, | |
600 | sizeof(struct nexthop_srv6)); | |
2aa01034 | 601 | |
eab0f8f0 | 602 | nexthop->nh_srv6->seg6_segs = *segs; |
2aa01034 HS |
603 | } |
604 | ||
eab0f8f0 | 605 | void nexthop_del_srv6_seg6(struct nexthop *nexthop) |
2aa01034 | 606 | { |
eab0f8f0 HS |
607 | if (!nexthop->nh_srv6) |
608 | return; | |
609 | ||
610 | memset(&nexthop->nh_srv6->seg6_segs, 0, | |
611 | sizeof(nexthop->nh_srv6->seg6_segs)); | |
612 | ||
613 | if (nexthop->nh_srv6->seg6local_action == | |
614 | ZEBRA_SEG6_LOCAL_ACTION_UNSPEC) | |
615 | XFREE(MTYPE_NH_SRV6, nexthop->nh_srv6); | |
2aa01034 HS |
616 | } |
617 | ||
d36d0d57 | 618 | const char *nexthop2str(const struct nexthop *nexthop, char *str, int size) |
80c2442a | 619 | { |
d62a17ae | 620 | switch (nexthop->type) { |
621 | case NEXTHOP_TYPE_IFINDEX: | |
622 | snprintf(str, size, "if %u", nexthop->ifindex); | |
623 | break; | |
624 | case NEXTHOP_TYPE_IPV4: | |
d62a17ae | 625 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
af3b34f6 DA |
626 | snprintfrr(str, size, "%pI4 if %u", &nexthop->gate.ipv4, |
627 | nexthop->ifindex); | |
d62a17ae | 628 | break; |
629 | case NEXTHOP_TYPE_IPV6: | |
d62a17ae | 630 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
af3b34f6 DA |
631 | snprintfrr(str, size, "%pI6 if %u", &nexthop->gate.ipv6, |
632 | nexthop->ifindex); | |
d62a17ae | 633 | break; |
634 | case NEXTHOP_TYPE_BLACKHOLE: | |
635 | snprintf(str, size, "blackhole"); | |
636 | break; | |
d62a17ae | 637 | } |
638 | ||
639 | return str; | |
80c2442a | 640 | } |
9fb47c05 CF |
641 | |
642 | /* | |
643 | * Iteration step for ALL_NEXTHOPS macro: | |
644 | * This is the tricky part. Check if `nexthop' has | |
645 | * NEXTHOP_FLAG_RECURSIVE set. If yes, this implies that `nexthop' has | |
646 | * at least one nexthop attached to `nexthop->resolved', which will be | |
647 | * the next one. | |
648 | * | |
649 | * If NEXTHOP_FLAG_RECURSIVE is not set, `nexthop' will progress in its | |
650 | * current chain. In case its current chain end is reached, it will move | |
651 | * upwards in the recursion levels and progress there. Whenever a step | |
652 | * forward in a chain is done, recursion will be checked again. | |
653 | * In a nustshell, it's equivalent to a pre-traversal order assuming that | |
654 | * left branch is 'resolved' and right branch is 'next': | |
655 | * https://en.wikipedia.org/wiki/Tree_traversal#/media/File:Sorted_binary_tree_preorder.svg | |
656 | */ | |
17c25e03 | 657 | struct nexthop *nexthop_next(const struct nexthop *nexthop) |
9fb47c05 | 658 | { |
d62a17ae | 659 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) |
660 | return nexthop->resolved; | |
9fb47c05 | 661 | |
d62a17ae | 662 | if (nexthop->next) |
663 | return nexthop->next; | |
9fb47c05 | 664 | |
d62a17ae | 665 | for (struct nexthop *par = nexthop->rparent; par; par = par->rparent) |
666 | if (par->next) | |
667 | return par->next; | |
9fb47c05 | 668 | |
d62a17ae | 669 | return NULL; |
9fb47c05 | 670 | } |
e3054ee9 | 671 | |
986a6617 | 672 | /* Return the next nexthop in the tree that is resolved and active */ |
17c25e03 | 673 | struct nexthop *nexthop_next_active_resolved(const struct nexthop *nexthop) |
986a6617 SW |
674 | { |
675 | struct nexthop *next = nexthop_next(nexthop); | |
676 | ||
677 | while (next | |
678 | && (CHECK_FLAG(next->flags, NEXTHOP_FLAG_RECURSIVE) | |
679 | || !CHECK_FLAG(next->flags, NEXTHOP_FLAG_ACTIVE))) | |
680 | next = nexthop_next(next); | |
681 | ||
682 | return next; | |
683 | } | |
684 | ||
850c85b9 | 685 | unsigned int nexthop_level(const struct nexthop *nexthop) |
e3054ee9 | 686 | { |
d62a17ae | 687 | unsigned int rv = 0; |
e3054ee9 | 688 | |
850c85b9 MS |
689 | for (const struct nexthop *par = nexthop->rparent; |
690 | par; par = par->rparent) | |
d62a17ae | 691 | rv++; |
e3054ee9 | 692 | |
d62a17ae | 693 | return rv; |
e3054ee9 | 694 | } |
d36d0d57 | 695 | |
73a38187 SW |
696 | /* Only hash word-sized things, let cmp do the rest. */ |
697 | uint32_t nexthop_hash_quick(const struct nexthop *nexthop) | |
d36d0d57 | 698 | { |
1b1fe1c4 | 699 | uint32_t key = 0x45afe398; |
474aebd9 | 700 | int i; |
d36d0d57 | 701 | |
1b1fe1c4 SW |
702 | key = jhash_3words(nexthop->type, nexthop->vrf_id, |
703 | nexthop->nh_label_type, key); | |
a15e669c | 704 | |
1b1fe1c4 SW |
705 | if (nexthop->nh_label) { |
706 | int labels = nexthop->nh_label->num_labels; | |
474aebd9 MS |
707 | |
708 | i = 0; | |
1b1fe1c4 SW |
709 | |
710 | while (labels >= 3) { | |
711 | key = jhash_3words(nexthop->nh_label->label[i], | |
712 | nexthop->nh_label->label[i + 1], | |
713 | nexthop->nh_label->label[i + 2], | |
714 | key); | |
715 | labels -= 3; | |
716 | i += 3; | |
717 | } | |
718 | ||
719 | if (labels >= 2) { | |
720 | key = jhash_2words(nexthop->nh_label->label[i], | |
721 | nexthop->nh_label->label[i + 1], | |
722 | key); | |
723 | labels -= 2; | |
724 | i += 2; | |
725 | } | |
726 | ||
727 | if (labels >= 1) | |
728 | key = jhash_1word(nexthop->nh_label->label[i], key); | |
729 | } | |
730 | ||
474aebd9 MS |
731 | key = jhash_2words(nexthop->ifindex, |
732 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK), | |
cba6a409 | 733 | key); |
a7df4ccf | 734 | |
474aebd9 MS |
735 | /* Include backup nexthops, if present */ |
736 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
737 | int backups = nexthop->backup_num; | |
738 | ||
739 | i = 0; | |
740 | ||
741 | while (backups >= 3) { | |
742 | key = jhash_3words(nexthop->backup_idx[i], | |
743 | nexthop->backup_idx[i + 1], | |
744 | nexthop->backup_idx[i + 2], key); | |
745 | backups -= 3; | |
746 | i += 3; | |
747 | } | |
748 | ||
749 | while (backups >= 2) { | |
750 | key = jhash_2words(nexthop->backup_idx[i], | |
751 | nexthop->backup_idx[i + 1], key); | |
752 | backups -= 2; | |
753 | i += 2; | |
754 | } | |
755 | ||
756 | if (backups >= 1) | |
757 | key = jhash_1word(nexthop->backup_idx[i], key); | |
758 | } | |
759 | ||
eab0f8f0 HS |
760 | if (nexthop->nh_srv6) { |
761 | key = jhash_1word(nexthop->nh_srv6->seg6local_action, key); | |
762 | key = jhash(&nexthop->nh_srv6->seg6local_ctx, | |
763 | sizeof(nexthop->nh_srv6->seg6local_ctx), key); | |
764 | key = jhash(&nexthop->nh_srv6->seg6_segs, | |
765 | sizeof(nexthop->nh_srv6->seg6_segs), key); | |
cb7775a9 HS |
766 | } |
767 | ||
d36d0d57 QY |
768 | return key; |
769 | } | |
d52ec572 | 770 | |
73a38187 SW |
771 | |
772 | #define GATE_SIZE 4 /* Number of uint32_t words in struct g_addr */ | |
773 | ||
774 | /* For a more granular hash */ | |
775 | uint32_t nexthop_hash(const struct nexthop *nexthop) | |
776 | { | |
777 | uint32_t gate_src_rmap_raw[GATE_SIZE * 3] = {}; | |
778 | /* Get all the quick stuff */ | |
779 | uint32_t key = nexthop_hash_quick(nexthop); | |
780 | ||
781 | assert(((sizeof(nexthop->gate) + sizeof(nexthop->src) | |
782 | + sizeof(nexthop->rmap_src)) | |
783 | / 3) | |
784 | == (GATE_SIZE * sizeof(uint32_t))); | |
785 | ||
786 | memcpy(gate_src_rmap_raw, &nexthop->gate, GATE_SIZE); | |
787 | memcpy(gate_src_rmap_raw + GATE_SIZE, &nexthop->src, GATE_SIZE); | |
788 | memcpy(gate_src_rmap_raw + (2 * GATE_SIZE), &nexthop->rmap_src, | |
789 | GATE_SIZE); | |
790 | ||
791 | key = jhash2(gate_src_rmap_raw, (GATE_SIZE * 3), key); | |
792 | ||
793 | return key; | |
794 | } | |
795 | ||
77bf9504 SW |
796 | void nexthop_copy_no_recurse(struct nexthop *copy, |
797 | const struct nexthop *nexthop, | |
798 | struct nexthop *rparent) | |
e7addf02 SW |
799 | { |
800 | copy->vrf_id = nexthop->vrf_id; | |
801 | copy->ifindex = nexthop->ifindex; | |
802 | copy->type = nexthop->type; | |
803 | copy->flags = nexthop->flags; | |
df7fb580 | 804 | copy->weight = nexthop->weight; |
474aebd9 MS |
805 | |
806 | assert(nexthop->backup_num < NEXTHOP_MAX_BACKUPS); | |
807 | copy->backup_num = nexthop->backup_num; | |
808 | if (copy->backup_num > 0) | |
809 | memcpy(copy->backup_idx, nexthop->backup_idx, copy->backup_num); | |
810 | ||
31f937fb | 811 | copy->srte_color = nexthop->srte_color; |
e7addf02 SW |
812 | memcpy(©->gate, &nexthop->gate, sizeof(nexthop->gate)); |
813 | memcpy(©->src, &nexthop->src, sizeof(nexthop->src)); | |
814 | memcpy(©->rmap_src, &nexthop->rmap_src, sizeof(nexthop->rmap_src)); | |
815 | copy->rparent = rparent; | |
816 | if (nexthop->nh_label) | |
817 | nexthop_add_labels(copy, nexthop->nh_label_type, | |
818 | nexthop->nh_label->num_labels, | |
819 | &nexthop->nh_label->label[0]); | |
cb7775a9 | 820 | |
eab0f8f0 HS |
821 | if (nexthop->nh_srv6) { |
822 | if (nexthop->nh_srv6->seg6local_action != | |
823 | ZEBRA_SEG6_LOCAL_ACTION_UNSPEC) | |
824 | nexthop_add_srv6_seg6local(copy, | |
825 | nexthop->nh_srv6->seg6local_action, | |
826 | &nexthop->nh_srv6->seg6local_ctx); | |
827 | if (!sid_zero(&nexthop->nh_srv6->seg6_segs)) | |
828 | nexthop_add_srv6_seg6(copy, | |
829 | &nexthop->nh_srv6->seg6_segs); | |
830 | } | |
e7addf02 SW |
831 | } |
832 | ||
77bf9504 SW |
833 | void nexthop_copy(struct nexthop *copy, const struct nexthop *nexthop, |
834 | struct nexthop *rparent) | |
835 | { | |
836 | nexthop_copy_no_recurse(copy, nexthop, rparent); | |
837 | ||
838 | /* Bit of a special case here, we need to handle the case | |
0cac0cf4 | 839 | * of a nexthop resolving to a group. Hence, we need to |
77bf9504 SW |
840 | * use a nexthop_group API. |
841 | */ | |
842 | if (CHECK_FLAG(copy->flags, NEXTHOP_FLAG_RECURSIVE)) | |
843 | copy_nexthops(©->resolved, nexthop->resolved, copy); | |
844 | } | |
845 | ||
846 | struct nexthop *nexthop_dup_no_recurse(const struct nexthop *nexthop, | |
847 | struct nexthop *rparent) | |
848 | { | |
849 | struct nexthop *new = nexthop_new(); | |
850 | ||
851 | nexthop_copy_no_recurse(new, nexthop, rparent); | |
852 | return new; | |
853 | } | |
854 | ||
504d0a40 SW |
855 | struct nexthop *nexthop_dup(const struct nexthop *nexthop, |
856 | struct nexthop *rparent) | |
857 | { | |
858 | struct nexthop *new = nexthop_new(); | |
859 | ||
860 | nexthop_copy(new, nexthop, rparent); | |
861 | return new; | |
862 | } | |
863 | ||
0cac0cf4 MS |
864 | /* |
865 | * Parse one or more backup index values, as comma-separated numbers, | |
866 | * into caller's array of uint8_ts. The array must be NEXTHOP_MAX_BACKUPS | |
867 | * in size. Mails back the number of values converted, and returns 0 on | |
868 | * success, <0 if an error in parsing. | |
869 | */ | |
870 | int nexthop_str2backups(const char *str, int *num_backups, | |
871 | uint8_t *backups) | |
872 | { | |
873 | char *ostr; /* copy of string (start) */ | |
874 | char *lstr; /* working copy of string */ | |
875 | char *nump; /* pointer to next segment */ | |
876 | char *endp; /* end pointer */ | |
877 | int i, ret; | |
878 | uint8_t tmp[NEXTHOP_MAX_BACKUPS]; | |
879 | uint32_t lval; | |
880 | ||
881 | /* Copy incoming string; the parse is destructive */ | |
882 | lstr = ostr = XSTRDUP(MTYPE_TMP, str); | |
883 | *num_backups = 0; | |
884 | ret = 0; | |
885 | ||
886 | for (i = 0; i < NEXTHOP_MAX_BACKUPS && lstr; i++) { | |
887 | nump = strsep(&lstr, ","); | |
888 | lval = strtoul(nump, &endp, 10); | |
889 | ||
890 | /* Format check */ | |
891 | if (*endp != '\0') { | |
892 | ret = -1; | |
893 | break; | |
894 | } | |
895 | ||
896 | /* Empty value */ | |
897 | if (endp == nump) { | |
898 | ret = -1; | |
899 | break; | |
900 | } | |
901 | ||
902 | /* Limit to one octet */ | |
903 | if (lval > 255) { | |
904 | ret = -1; | |
905 | break; | |
906 | } | |
907 | ||
908 | tmp[i] = lval; | |
909 | } | |
910 | ||
911 | /* Excess values */ | |
912 | if (ret == 0 && i == NEXTHOP_MAX_BACKUPS && lstr) | |
913 | ret = -1; | |
914 | ||
915 | if (ret == 0) { | |
916 | *num_backups = i; | |
917 | memcpy(backups, tmp, i); | |
918 | } | |
919 | ||
920 | XFREE(MTYPE_TMP, ostr); | |
921 | ||
922 | return ret; | |
923 | } | |
924 | ||
f7a410a7 DS |
925 | ssize_t printfrr_nhs(struct fbuf *buf, const struct nexthop *nexthop) |
926 | { | |
927 | ssize_t ret = 0; | |
928 | ||
929 | if (!nexthop) | |
930 | return bputs(buf, "(null)"); | |
931 | ||
932 | switch (nexthop->type) { | |
933 | case NEXTHOP_TYPE_IFINDEX: | |
934 | ret += bprintfrr(buf, "if %u", nexthop->ifindex); | |
935 | break; | |
936 | case NEXTHOP_TYPE_IPV4: | |
937 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
938 | ret += bprintfrr(buf, "%pI4 if %u", &nexthop->gate.ipv4, | |
939 | nexthop->ifindex); | |
940 | break; | |
941 | case NEXTHOP_TYPE_IPV6: | |
942 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
943 | ret += bprintfrr(buf, "%pI6 if %u", &nexthop->gate.ipv6, | |
944 | nexthop->ifindex); | |
945 | break; | |
946 | case NEXTHOP_TYPE_BLACKHOLE: | |
947 | ret += bputs(buf, "blackhole"); | |
948 | break; | |
949 | } | |
950 | return ret; | |
951 | } | |
952 | ||
d52ec572 DL |
953 | /* |
954 | * nexthop printing variants: | |
955 | * %pNHvv | |
956 | * via 1.2.3.4 | |
957 | * via 1.2.3.4, eth0 | |
958 | * is directly connected, eth0 | |
959 | * unreachable (blackhole) | |
960 | * %pNHv | |
961 | * 1.2.3.4 | |
962 | * 1.2.3.4, via eth0 | |
963 | * directly connected, eth0 | |
964 | * unreachable (blackhole) | |
965 | * %pNHs | |
966 | * nexthop2str() | |
016cfe70 PZ |
967 | * %pNHcg |
968 | * 1.2.3.4 | |
969 | * (0-length if no IP address present) | |
970 | * %pNHci | |
971 | * eth0 | |
972 | * (0-length if no interface present) | |
d52ec572 | 973 | */ |
54929fd3 | 974 | printfrr_ext_autoreg_p("NH", printfrr_nh); |
3ea79430 DL |
975 | static ssize_t printfrr_nh(struct fbuf *buf, struct printfrr_eargs *ea, |
976 | const void *ptr) | |
d52ec572 DL |
977 | { |
978 | const struct nexthop *nexthop = ptr; | |
d52ec572 | 979 | bool do_ifi = false; |
212e04e5 DL |
980 | const char *v_is = "", *v_via = "", *v_viaif = "via "; |
981 | ssize_t ret = 0; | |
d52ec572 | 982 | |
3ea79430 | 983 | switch (*ea->fmt) { |
d52ec572 | 984 | case 'v': |
3ea79430 DL |
985 | ea->fmt++; |
986 | if (*ea->fmt == 'v') { | |
d52ec572 DL |
987 | v_is = "is "; |
988 | v_via = "via "; | |
989 | v_viaif = ""; | |
3ea79430 | 990 | ea->fmt++; |
d52ec572 DL |
991 | } |
992 | ||
212e04e5 | 993 | if (!nexthop) |
eba599a3 | 994 | return bputs(buf, "(null)"); |
212e04e5 | 995 | |
d52ec572 DL |
996 | switch (nexthop->type) { |
997 | case NEXTHOP_TYPE_IPV4: | |
998 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
212e04e5 DL |
999 | ret += bprintfrr(buf, "%s%pI4", v_via, |
1000 | &nexthop->gate.ipv4); | |
d52ec572 DL |
1001 | do_ifi = true; |
1002 | break; | |
1003 | case NEXTHOP_TYPE_IPV6: | |
1004 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
212e04e5 DL |
1005 | ret += bprintfrr(buf, "%s%pI6", v_via, |
1006 | &nexthop->gate.ipv6); | |
d52ec572 DL |
1007 | do_ifi = true; |
1008 | break; | |
1009 | case NEXTHOP_TYPE_IFINDEX: | |
212e04e5 DL |
1010 | ret += bprintfrr(buf, "%sdirectly connected, %s", v_is, |
1011 | ifindex2ifname(nexthop->ifindex, | |
1012 | nexthop->vrf_id)); | |
d52ec572 DL |
1013 | break; |
1014 | case NEXTHOP_TYPE_BLACKHOLE: | |
212e04e5 DL |
1015 | ret += bputs(buf, "unreachable"); |
1016 | ||
d52ec572 DL |
1017 | switch (nexthop->bh_type) { |
1018 | case BLACKHOLE_REJECT: | |
212e04e5 | 1019 | ret += bputs(buf, " (ICMP unreachable)"); |
d52ec572 DL |
1020 | break; |
1021 | case BLACKHOLE_ADMINPROHIB: | |
212e04e5 | 1022 | ret += bputs(buf, " (ICMP admin-prohibited)"); |
d52ec572 DL |
1023 | break; |
1024 | case BLACKHOLE_NULL: | |
212e04e5 | 1025 | ret += bputs(buf, " (blackhole)"); |
d52ec572 | 1026 | break; |
21ecdb1f | 1027 | case BLACKHOLE_UNSPEC: |
d52ec572 DL |
1028 | break; |
1029 | } | |
d52ec572 | 1030 | break; |
d52ec572 DL |
1031 | } |
1032 | if (do_ifi && nexthop->ifindex) | |
212e04e5 DL |
1033 | ret += bprintfrr(buf, ", %s%s", v_viaif, |
1034 | ifindex2ifname(nexthop->ifindex, | |
1035 | nexthop->vrf_id)); | |
d52ec572 | 1036 | |
d52ec572 DL |
1037 | return ret; |
1038 | case 's': | |
3ea79430 | 1039 | ea->fmt++; |
212e04e5 | 1040 | |
f7a410a7 | 1041 | ret += printfrr_nhs(buf, nexthop); |
212e04e5 | 1042 | return ret; |
016cfe70 PZ |
1043 | case 'c': |
1044 | ea->fmt++; | |
1045 | if (*ea->fmt == 'g') { | |
1046 | ea->fmt++; | |
1047 | if (!nexthop) | |
1048 | return bputs(buf, "(null)"); | |
1049 | switch (nexthop->type) { | |
1050 | case NEXTHOP_TYPE_IPV4: | |
1051 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1052 | ret += bprintfrr(buf, "%pI4", | |
1053 | &nexthop->gate.ipv4); | |
1054 | break; | |
1055 | case NEXTHOP_TYPE_IPV6: | |
1056 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1057 | ret += bprintfrr(buf, "%pI6", | |
1058 | &nexthop->gate.ipv6); | |
1059 | break; | |
1060 | case NEXTHOP_TYPE_IFINDEX: | |
1061 | case NEXTHOP_TYPE_BLACKHOLE: | |
1062 | break; | |
1063 | } | |
1064 | } else if (*ea->fmt == 'i') { | |
1065 | ea->fmt++; | |
1066 | if (!nexthop) | |
1067 | return bputs(buf, "(null)"); | |
1068 | switch (nexthop->type) { | |
1069 | case NEXTHOP_TYPE_IFINDEX: | |
1070 | ret += bprintfrr( | |
1071 | buf, "%s", | |
1072 | ifindex2ifname(nexthop->ifindex, | |
1073 | nexthop->vrf_id)); | |
1074 | break; | |
1075 | case NEXTHOP_TYPE_IPV4: | |
1076 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1077 | case NEXTHOP_TYPE_IPV6: | |
1078 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1079 | if (nexthop->ifindex) | |
1080 | ret += bprintfrr( | |
1081 | buf, "%s", | |
1082 | ifindex2ifname( | |
1083 | nexthop->ifindex, | |
1084 | nexthop->vrf_id)); | |
1085 | break; | |
1086 | case NEXTHOP_TYPE_BLACKHOLE: | |
1087 | break; | |
1088 | } | |
1089 | } | |
1090 | return ret; | |
d52ec572 | 1091 | } |
212e04e5 | 1092 | return -1; |
d52ec572 | 1093 | } |