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7758e3f3 | 1 | /* Zebra MPLS code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
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 | |
7758e3f3 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
7758e3f3 | 26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
a971aeb6 | 37 | #include "termtable.h" |
b78b820d | 38 | #include "lib/json.h" |
7758e3f3 | 39 | |
40 | #include "zebra/rib.h" | |
41 | #include "zebra/rt.h" | |
86f07f44 | 42 | #include "zebra/interface.h" |
7758e3f3 | 43 | #include "zebra/zserv.h" |
3801e764 | 44 | #include "zebra/zebra_router.h" |
7758e3f3 | 45 | #include "zebra/redistribute.h" |
46 | #include "zebra/debug.h" | |
7758e3f3 | 47 | #include "zebra/zebra_vrf.h" |
48 | #include "zebra/zebra_mpls.h" | |
31f937fb | 49 | #include "zebra/zebra_srte.h" |
43e52561 | 50 | #include "zebra/zebra_errors.h" |
7758e3f3 | 51 | |
bf8d3d6a DL |
52 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object"); |
53 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object"); | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object"); | |
7758e3f3 | 55 | |
c87f5c23 | 56 | bool mpls_enabled; |
6fb35808 | 57 | bool mpls_pw_reach_strict; /* Strict reachability checking */ |
fe6c7157 | 58 | |
7758e3f3 | 59 | /* static function declarations */ |
f31e084c | 60 | |
d62a17ae | 61 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a | 62 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
60e36561 | 63 | struct zebra_fec *fec); |
d62a17ae | 64 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
65 | struct route_node *rn, struct route_entry *re); | |
66 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
60e36561 | 67 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, struct zebra_fec *fec, |
d62a17ae | 68 | mpls_label_t old_label); |
60e36561 DS |
69 | static int fec_send(struct zebra_fec *fec, struct zserv *client); |
70 | static void fec_update_clients(struct zebra_fec *fec); | |
71 | static void fec_print(struct zebra_fec *fec, struct vty *vty); | |
72 | static struct zebra_fec *fec_find(struct route_table *table, struct prefix *p); | |
73 | static struct zebra_fec *fec_add(struct route_table *table, struct prefix *p, | |
74 | mpls_label_t label, uint32_t flags, | |
75 | uint32_t label_index); | |
76 | static int fec_del(struct zebra_fec *fec); | |
d62a17ae | 77 | |
d8b87afe | 78 | static unsigned int label_hash(const void *p); |
74df8d6d | 79 | static bool label_cmp(const void *p1, const void *p2); |
f2595bd5 | 80 | static int nhlfe_nexthop_active_ipv4(struct zebra_nhlfe *nhlfe, |
d62a17ae | 81 | struct nexthop *nexthop); |
f2595bd5 | 82 | static int nhlfe_nexthop_active_ipv6(struct zebra_nhlfe *nhlfe, |
d62a17ae | 83 | struct nexthop *nexthop); |
f2595bd5 | 84 | static int nhlfe_nexthop_active(struct zebra_nhlfe *nhlfe); |
d62a17ae | 85 | |
8f74a383 | 86 | static void lsp_select_best_nhlfe(struct zebra_lsp *lsp); |
e3b78da8 TB |
87 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt); |
88 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt); | |
d62a17ae | 89 | static wq_item_status lsp_process(struct work_queue *wq, void *data); |
90 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
91 | static void lsp_processq_complete(struct work_queue *wq); | |
8f74a383 | 92 | static int lsp_processq_add(struct zebra_lsp *lsp); |
d62a17ae | 93 | static void *lsp_alloc(void *p); |
1323491d MS |
94 | |
95 | /* Check whether lsp can be freed - no nhlfes, e.g., and call free api */ | |
8f74a383 | 96 | static void lsp_check_free(struct hash *lsp_table, struct zebra_lsp **plsp); |
1323491d | 97 | |
ebab422a | 98 | /* Free lsp; sets caller's pointer to NULL */ |
8f74a383 | 99 | static void lsp_free(struct hash *lsp_table, struct zebra_lsp **plsp); |
d62a17ae | 100 | |
f2595bd5 DS |
101 | static char *nhlfe2str(const struct zebra_nhlfe *nhlfe, char *buf, int size); |
102 | static char *nhlfe_config_str(const struct zebra_nhlfe *nhlfe, char *buf, | |
103 | int size); | |
104 | static int nhlfe_nhop_match(struct zebra_nhlfe *nhlfe, | |
105 | enum nexthop_types_t gtype, | |
e4a1ec74 | 106 | const union g_addr *gate, ifindex_t ifindex); |
f2595bd5 DS |
107 | static struct zebra_nhlfe *nhlfe_find(struct nhlfe_list_head *list, |
108 | enum lsp_types_t lsp_type, | |
109 | enum nexthop_types_t gtype, | |
110 | const union g_addr *gate, | |
111 | ifindex_t ifindex); | |
112 | static struct zebra_nhlfe * | |
8f74a383 | 113 | nhlfe_add(struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
f2595bd5 DS |
114 | enum nexthop_types_t gtype, const union g_addr *gate, |
115 | ifindex_t ifindex, uint8_t num_labels, const mpls_label_t *labels, | |
116 | bool is_backup); | |
117 | static int nhlfe_del(struct zebra_nhlfe *nhlfe); | |
118 | static void nhlfe_free(struct zebra_nhlfe *nhlfe); | |
119 | static void nhlfe_out_label_update(struct zebra_nhlfe *nhlfe, | |
8ecdb26e | 120 | struct mpls_label_stack *nh_label); |
8f74a383 | 121 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, struct zebra_lsp *lsp, |
d62a17ae | 122 | enum lsp_types_t type); |
123 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
124 | mpls_label_t in_label); | |
f2595bd5 | 125 | static void nhlfe_print(struct zebra_nhlfe *nhlfe, struct vty *vty, |
3c0e1622 | 126 | const char *indent); |
8f74a383 | 127 | static void lsp_print(struct vty *vty, struct zebra_lsp *lsp); |
651105b5 RW |
128 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
129 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
130 | int afi, enum lsp_types_t lsp_type); | |
8f74a383 | 131 | static int lsp_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 132 | const struct zapi_nexthop *znh); |
8f74a383 | 133 | static int lsp_backup_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 134 | const struct zapi_nexthop *znh); |
7758e3f3 | 135 | |
7758e3f3 | 136 | /* Static functions */ |
137 | ||
3d468f66 DS |
138 | /* |
139 | * Handle failure in LSP install, clear flags for NHLFE. | |
140 | */ | |
8f74a383 | 141 | static void clear_nhlfe_installed(struct zebra_lsp *lsp) |
3d468f66 | 142 | { |
f2595bd5 | 143 | struct zebra_nhlfe *nhlfe; |
3d468f66 DS |
144 | struct nexthop *nexthop; |
145 | ||
ee70f629 | 146 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3d468f66 DS |
147 | nexthop = nhlfe->nexthop; |
148 | if (!nexthop) | |
149 | continue; | |
150 | ||
151 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
152 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
153 | } | |
68110c42 MS |
154 | |
155 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
156 | nexthop = nhlfe->nexthop; | |
157 | if (!nexthop) | |
158 | continue; | |
159 | ||
160 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
161 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
162 | } | |
3d468f66 DS |
163 | } |
164 | ||
a64448ba DS |
165 | /* |
166 | * Install label forwarding entry based on labeled-route entry. | |
167 | */ | |
d62a17ae | 168 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
169 | struct route_node *rn, struct route_entry *re) | |
170 | { | |
171 | struct hash *lsp_table; | |
a7d2146a | 172 | struct zebra_ile tmp_ile; |
8f74a383 | 173 | struct zebra_lsp *lsp; |
f2595bd5 | 174 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 175 | struct nexthop *nexthop; |
176 | enum lsp_types_t lsp_type; | |
177 | char buf[BUFSIZ]; | |
178 | int added, changed; | |
179 | ||
180 | /* Lookup table. */ | |
181 | lsp_table = zvrf->lsp_table; | |
182 | if (!lsp_table) | |
183 | return -1; | |
184 | ||
185 | lsp_type = lsp_type_from_re_type(re->type); | |
186 | added = changed = 0; | |
187 | ||
188 | /* Locate or allocate LSP entry. */ | |
189 | tmp_ile.in_label = label; | |
190 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
d62a17ae | 191 | |
192 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
193 | * recursive nexthops right now, because intermediate hops won't | |
194 | * understand | |
195 | * the label advertised by the recursive nexthop (plus we don't have the | |
196 | * logic yet to push multiple labels). | |
197 | */ | |
c415d895 | 198 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 199 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 200 | /* Skip inactive and recursive entries. */ |
201 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
202 | continue; | |
203 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
204 | continue; | |
205 | ||
ee70f629 MS |
206 | nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type, |
207 | nexthop->type, &nexthop->gate, | |
d62a17ae | 208 | nexthop->ifindex); |
209 | if (nhlfe) { | |
210 | /* Clear deleted flag (in case it was set) */ | |
211 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
212 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
213 | /* No change */ | |
214 | continue; | |
215 | ||
216 | ||
217 | if (IS_ZEBRA_DEBUG_MPLS) { | |
218 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
219 | zlog_debug( | |
3efd0893 | 220 | "LSP in-label %u type %d nexthop %s out-label changed", |
d62a17ae | 221 | lsp->ile.in_label, lsp_type, buf); |
222 | } | |
223 | ||
224 | /* Update out label, trigger processing. */ | |
225 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
226 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
227 | changed++; | |
228 | } else { | |
229 | /* Add LSP entry to this nexthop */ | |
230 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
231 | &nexthop->gate, nexthop->ifindex, | |
5065db0a | 232 | nexthop->nh_label->num_labels, |
cc1b9746 MS |
233 | nexthop->nh_label->label, |
234 | false /*backup*/); | |
d62a17ae | 235 | if (!nhlfe) |
236 | return -1; | |
237 | ||
238 | if (IS_ZEBRA_DEBUG_MPLS) { | |
239 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
240 | zlog_debug( | |
3efd0893 | 241 | "Add LSP in-label %u type %d nexthop %s out-label %u", |
d62a17ae | 242 | lsp->ile.in_label, lsp_type, buf, |
243 | nexthop->nh_label->label[0]); | |
244 | } | |
245 | ||
246 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
247 | ||
248 | /* Mark NHLFE as changed. */ | |
249 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
250 | added++; | |
251 | } | |
252 | } | |
253 | ||
254 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
255 | * case), delete the LSP entry; this case results in somewhat ugly | |
256 | * logging. | |
257 | */ | |
258 | if (added || changed) { | |
259 | if (lsp_processq_add(lsp)) | |
260 | return -1; | |
1323491d MS |
261 | } else { |
262 | lsp_check_free(lsp_table, &lsp); | |
263 | } | |
d62a17ae | 264 | |
265 | return 0; | |
a64448ba DS |
266 | } |
267 | ||
268 | /* | |
269 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
270 | * NHLFEs are removed, the entire entry is deleted. | |
271 | */ | |
d62a17ae | 272 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
273 | { | |
274 | struct hash *lsp_table; | |
a7d2146a | 275 | struct zebra_ile tmp_ile; |
8f74a383 | 276 | struct zebra_lsp *lsp; |
f2595bd5 | 277 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 278 | char buf[BUFSIZ]; |
279 | ||
280 | /* Lookup table. */ | |
281 | lsp_table = zvrf->lsp_table; | |
282 | if (!lsp_table) | |
283 | return -1; | |
284 | ||
285 | /* If entry is not present, exit. */ | |
286 | tmp_ile.in_label = label; | |
287 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 288 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 289 | return 0; |
290 | ||
291 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 292 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 293 | |
294 | /* Skip static NHLFEs */ | |
295 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
296 | continue; | |
297 | ||
298 | if (IS_ZEBRA_DEBUG_MPLS) { | |
299 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
300 | zlog_debug( | |
301 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
302 | label, nhlfe->type, buf, nhlfe->flags); | |
303 | } | |
304 | ||
305 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
306 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
307 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
308 | } else { | |
309 | nhlfe_del(nhlfe); | |
310 | } | |
311 | } | |
312 | ||
313 | /* Queue LSP for processing, if needed, else delete. */ | |
314 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
315 | if (lsp_processq_add(lsp)) | |
316 | return -1; | |
1323491d MS |
317 | } else { |
318 | lsp_check_free(lsp_table, &lsp); | |
319 | } | |
d62a17ae | 320 | |
321 | return 0; | |
a64448ba DS |
322 | } |
323 | ||
28d58fd7 VV |
324 | /* |
325 | * This function is invoked upon change to label block configuration; it | |
326 | * will walk all registered FECs with label-index and appropriately update | |
327 | * their local labels and trigger client updates. | |
328 | */ | |
d62a17ae | 329 | static void fec_evaluate(struct zebra_vrf *zvrf) |
330 | { | |
331 | struct route_node *rn; | |
60e36561 | 332 | struct zebra_fec *fec; |
d7c0a89a | 333 | uint32_t old_label, new_label; |
d62a17ae | 334 | int af; |
d62a17ae | 335 | |
336 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
337 | if (zvrf->fec_table[af] == NULL) | |
338 | continue; | |
339 | ||
340 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
341 | rn = route_next(rn)) { | |
342 | if ((fec = rn->info) == NULL) | |
343 | continue; | |
344 | ||
345 | /* Skip configured FECs and those without a label index. | |
346 | */ | |
347 | if (fec->flags & FEC_FLAG_CONFIGURED | |
348 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
349 | continue; | |
350 | ||
d62a17ae | 351 | /* Save old label, determine new label. */ |
352 | old_label = fec->label; | |
353 | new_label = | |
354 | zvrf->mpls_srgb.start_label + fec->label_index; | |
355 | if (new_label >= zvrf->mpls_srgb.end_label) | |
356 | new_label = MPLS_INVALID_LABEL; | |
357 | ||
358 | /* If label has changed, update FEC and clients. */ | |
359 | if (new_label == old_label) | |
360 | continue; | |
361 | ||
362 | if (IS_ZEBRA_DEBUG_MPLS) | |
363 | zlog_debug( | |
b467b4b4 DS |
364 | "Update fec %pRN new label %u upon label block", |
365 | rn, new_label); | |
d62a17ae | 366 | |
367 | fec->label = new_label; | |
368 | fec_update_clients(fec); | |
369 | ||
370 | /* Update label forwarding entries appropriately */ | |
371 | fec_change_update_lsp(zvrf, fec, old_label); | |
372 | } | |
373 | } | |
28d58fd7 VV |
374 | } |
375 | ||
376 | /* | |
377 | * Derive (if possible) and update the local label for the FEC based on | |
378 | * its label index. The index is "acceptable" if it falls within the | |
379 | * globally configured label block (SRGB). | |
380 | */ | |
d7c0a89a | 381 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
60e36561 | 382 | struct zebra_fec *fec) |
28d58fd7 | 383 | { |
d7c0a89a | 384 | uint32_t label; |
28d58fd7 | 385 | |
d62a17ae | 386 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
387 | && zvrf->mpls_srgb.start_label | |
388 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
389 | < zvrf->mpls_srgb.end_label)) | |
390 | fec->label = label; | |
391 | else | |
392 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 393 | |
d62a17ae | 394 | return fec->label; |
28d58fd7 VV |
395 | } |
396 | ||
a64448ba DS |
397 | /* |
398 | * There is a change for this FEC. Install or uninstall label forwarding | |
399 | * entries, as appropriate. | |
400 | */ | |
60e36561 | 401 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, struct zebra_fec *fec, |
d62a17ae | 402 | mpls_label_t old_label) |
a64448ba | 403 | { |
d62a17ae | 404 | struct route_table *table; |
405 | struct route_node *rn; | |
406 | struct route_entry *re; | |
407 | afi_t afi; | |
a64448ba | 408 | |
d62a17ae | 409 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
410 | if (old_label != MPLS_INVALID_LABEL |
411 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 412 | lsp_uninstall(zvrf, old_label); |
a64448ba | 413 | |
d62a17ae | 414 | /* Install label forwarding entry corr. to new label, if needed. */ |
415 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 416 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 417 | return 0; |
a64448ba | 418 | |
d62a17ae | 419 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
420 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
421 | if (!table) | |
422 | return 0; | |
a64448ba | 423 | |
d62a17ae | 424 | /* See if labeled route exists. */ |
425 | rn = route_node_lookup(table, &fec->rn->p); | |
426 | if (!rn) | |
427 | return 0; | |
a64448ba | 428 | |
a2addae8 | 429 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 430 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
431 | break; | |
432 | } | |
a64448ba | 433 | |
d62a17ae | 434 | if (!re || !zebra_rib_labeled_unicast(re)) |
435 | return 0; | |
a64448ba | 436 | |
d62a17ae | 437 | if (lsp_install(zvrf, fec->label, rn, re)) |
438 | return -1; | |
a64448ba | 439 | |
d62a17ae | 440 | return 0; |
a64448ba DS |
441 | } |
442 | ||
5aba114a DS |
443 | /* |
444 | * Inform about FEC to a registered client. | |
445 | */ | |
60e36561 | 446 | static int fec_send(struct zebra_fec *fec, struct zserv *client) |
5aba114a | 447 | { |
d62a17ae | 448 | struct stream *s; |
449 | struct route_node *rn; | |
5aba114a | 450 | |
d62a17ae | 451 | rn = fec->rn; |
5aba114a | 452 | |
d62a17ae | 453 | /* Get output stream. */ |
1002497a | 454 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 455 | |
7cf15b25 | 456 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 457 | |
d62a17ae | 458 | stream_putw(s, rn->p.family); |
459 | stream_put_prefix(s, &rn->p); | |
460 | stream_putl(s, fec->label); | |
461 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 462 | return zserv_send_message(client, s); |
5aba114a DS |
463 | } |
464 | ||
465 | /* | |
466 | * Update all registered clients about this FEC. Caller should've updated | |
467 | * FEC and ensure no duplicate updates. | |
468 | */ | |
60e36561 | 469 | static void fec_update_clients(struct zebra_fec *fec) |
5aba114a | 470 | { |
d62a17ae | 471 | struct listnode *node; |
472 | struct zserv *client; | |
5aba114a | 473 | |
d62a17ae | 474 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
475 | if (IS_ZEBRA_DEBUG_MPLS) | |
476 | zlog_debug("Update client %s", | |
477 | zebra_route_string(client->proto)); | |
478 | fec_send(fec, client); | |
479 | } | |
5aba114a DS |
480 | } |
481 | ||
482 | ||
f31e084c DS |
483 | /* |
484 | * Print a FEC-label binding entry. | |
485 | */ | |
60e36561 | 486 | static void fec_print(struct zebra_fec *fec, struct vty *vty) |
d62a17ae | 487 | { |
488 | struct route_node *rn; | |
489 | struct listnode *node; | |
490 | struct zserv *client; | |
491 | char buf[BUFSIZ]; | |
492 | ||
493 | rn = fec->rn; | |
b467b4b4 | 494 | vty_out(vty, "%pRN\n", rn); |
d62a17ae | 495 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); |
496 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
497 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
498 | vty_out(vty, "\n"); | |
499 | if (!list_isempty(fec->client_list)) { | |
500 | vty_out(vty, " Client list:"); | |
501 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
502 | vty_out(vty, " %s(fd %d)", | |
503 | zebra_route_string(client->proto), | |
504 | client->sock); | |
505 | vty_out(vty, "\n"); | |
506 | } | |
f31e084c DS |
507 | } |
508 | ||
509 | /* | |
510 | * Locate FEC-label binding that matches with passed info. | |
511 | */ | |
60e36561 | 512 | static struct zebra_fec *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 513 | { |
d62a17ae | 514 | struct route_node *rn; |
f31e084c | 515 | |
d62a17ae | 516 | apply_mask(p); |
517 | rn = route_node_lookup(table, p); | |
518 | if (!rn) | |
519 | return NULL; | |
f31e084c | 520 | |
d62a17ae | 521 | route_unlock_node(rn); |
522 | return (rn->info); | |
f31e084c DS |
523 | } |
524 | ||
525 | /* | |
5aba114a DS |
526 | * Add a FEC. This may be upon a client registering for a binding |
527 | * or when a binding is configured. | |
f31e084c | 528 | */ |
60e36561 DS |
529 | static struct zebra_fec *fec_add(struct route_table *table, struct prefix *p, |
530 | mpls_label_t label, uint32_t flags, | |
531 | uint32_t label_index) | |
f31e084c | 532 | { |
d62a17ae | 533 | struct route_node *rn; |
60e36561 | 534 | struct zebra_fec *fec; |
f31e084c | 535 | |
d62a17ae | 536 | apply_mask(p); |
f31e084c | 537 | |
d62a17ae | 538 | /* Lookup (or add) route node.*/ |
539 | rn = route_node_get(table, p); | |
540 | if (!rn) | |
541 | return NULL; | |
f31e084c | 542 | |
d62a17ae | 543 | fec = rn->info; |
f31e084c | 544 | |
d62a17ae | 545 | if (!fec) { |
60e36561 | 546 | fec = XCALLOC(MTYPE_FEC, sizeof(struct zebra_fec)); |
f31e084c | 547 | |
d62a17ae | 548 | rn->info = fec; |
549 | fec->rn = rn; | |
550 | fec->label = label; | |
551 | fec->client_list = list_new(); | |
552 | } else | |
553 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 554 | |
d62a17ae | 555 | fec->label_index = label_index; |
556 | fec->flags = flags; | |
f31e084c | 557 | |
d62a17ae | 558 | return fec; |
f31e084c DS |
559 | } |
560 | ||
561 | /* | |
5aba114a DS |
562 | * Delete a FEC. This may be upon the last client deregistering for |
563 | * a FEC and no binding exists or when the binding is deleted and there | |
564 | * are no registered clients. | |
f31e084c | 565 | */ |
60e36561 | 566 | static int fec_del(struct zebra_fec *fec) |
f31e084c | 567 | { |
6a154c88 | 568 | list_delete(&fec->client_list); |
d62a17ae | 569 | fec->rn->info = NULL; |
570 | route_unlock_node(fec->rn); | |
571 | XFREE(MTYPE_FEC, fec); | |
572 | return 0; | |
f31e084c DS |
573 | } |
574 | ||
7758e3f3 | 575 | /* |
576 | * Hash function for label. | |
577 | */ | |
d8b87afe | 578 | static unsigned int label_hash(const void *p) |
7758e3f3 | 579 | { |
a7d2146a | 580 | const struct zebra_ile *ile = p; |
7758e3f3 | 581 | |
d62a17ae | 582 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 583 | } |
584 | ||
585 | /* | |
586 | * Compare 2 LSP hash entries based on in-label. | |
587 | */ | |
74df8d6d | 588 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 589 | { |
a7d2146a DS |
590 | const struct zebra_ile *ile1 = p1; |
591 | const struct zebra_ile *ile2 = p2; | |
7758e3f3 | 592 | |
d62a17ae | 593 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 594 | } |
595 | ||
40c7bdb0 | 596 | /* |
597 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
598 | * the passed flag. | |
599 | * NOTE: Looking only for connected routes right now. | |
600 | */ | |
f2595bd5 | 601 | static int nhlfe_nexthop_active_ipv4(struct zebra_nhlfe *nhlfe, |
d62a17ae | 602 | struct nexthop *nexthop) |
40c7bdb0 | 603 | { |
d62a17ae | 604 | struct route_table *table; |
605 | struct prefix_ipv4 p; | |
606 | struct route_node *rn; | |
607 | struct route_entry *match; | |
608 | struct nexthop *match_nh; | |
40c7bdb0 | 609 | |
4a7371e9 | 610 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 611 | if (!table) |
612 | return 0; | |
40c7bdb0 | 613 | |
d62a17ae | 614 | /* Lookup nexthop in IPv4 routing table. */ |
6006b807 | 615 | memset(&p, 0, sizeof(p)); |
d62a17ae | 616 | p.family = AF_INET; |
936fbaef | 617 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 618 | p.prefix = nexthop->gate.ipv4; |
40c7bdb0 | 619 | |
d62a17ae | 620 | rn = route_node_match(table, (struct prefix *)&p); |
621 | if (!rn) | |
622 | return 0; | |
40c7bdb0 | 623 | |
d62a17ae | 624 | route_unlock_node(rn); |
88d88a9c | 625 | |
d62a17ae | 626 | /* Locate a valid connected route. */ |
a2addae8 | 627 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 628 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
629 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
630 | continue; | |
631 | ||
c415d895 | 632 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 633 | match_nh = match_nh->next) { |
634 | if (match->type == ZEBRA_ROUTE_CONNECT | |
635 | || nexthop->ifindex == match_nh->ifindex) { | |
636 | nexthop->ifindex = match_nh->ifindex; | |
637 | return 1; | |
638 | } | |
639 | } | |
88d88a9c | 640 | } |
40c7bdb0 | 641 | |
d62a17ae | 642 | return 0; |
40c7bdb0 | 643 | } |
644 | ||
645 | ||
646 | /* | |
647 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
648 | * the passed flag. | |
649 | * NOTE: Looking only for connected routes right now. | |
650 | */ | |
f2595bd5 | 651 | static int nhlfe_nexthop_active_ipv6(struct zebra_nhlfe *nhlfe, |
d62a17ae | 652 | struct nexthop *nexthop) |
40c7bdb0 | 653 | { |
d62a17ae | 654 | struct route_table *table; |
655 | struct prefix_ipv6 p; | |
656 | struct route_node *rn; | |
657 | struct route_entry *match; | |
40c7bdb0 | 658 | |
4a7371e9 | 659 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 660 | if (!table) |
661 | return 0; | |
40c7bdb0 | 662 | |
d62a17ae | 663 | /* Lookup nexthop in IPv6 routing table. */ |
6006b807 | 664 | memset(&p, 0, sizeof(p)); |
d62a17ae | 665 | p.family = AF_INET6; |
f4d81e55 | 666 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 667 | p.prefix = nexthop->gate.ipv6; |
40c7bdb0 | 668 | |
d62a17ae | 669 | rn = route_node_match(table, (struct prefix *)&p); |
670 | if (!rn) | |
671 | return 0; | |
40c7bdb0 | 672 | |
d62a17ae | 673 | route_unlock_node(rn); |
40c7bdb0 | 674 | |
d62a17ae | 675 | /* Locate a valid connected route. */ |
a2addae8 | 676 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 677 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
678 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
679 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
680 | break; | |
681 | } | |
40c7bdb0 | 682 | |
c415d895 | 683 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 684 | return 0; |
40c7bdb0 | 685 | |
c415d895 | 686 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 687 | return 1; |
40c7bdb0 | 688 | } |
689 | ||
690 | ||
691 | /* | |
692 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
693 | * or not. | |
694 | * NOTE: Each NHLFE points to only 1 nexthop. | |
695 | */ | |
f2595bd5 | 696 | static int nhlfe_nexthop_active(struct zebra_nhlfe *nhlfe) |
d62a17ae | 697 | { |
698 | struct nexthop *nexthop; | |
699 | struct interface *ifp; | |
86f07f44 | 700 | struct zebra_ns *zns; |
d62a17ae | 701 | |
702 | nexthop = nhlfe->nexthop; | |
703 | if (!nexthop) // unexpected | |
704 | return 0; | |
705 | ||
706 | /* Check on nexthop based on type. */ | |
707 | switch (nexthop->type) { | |
b9abd9ad DS |
708 | case NEXTHOP_TYPE_IFINDEX: |
709 | /* | |
710 | * Lookup if this type is special. The | |
711 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
712 | * forward into a different table for | |
713 | * processing. As such this ifindex | |
714 | * passed to us may be a VRF device | |
715 | * which will not be in the default | |
716 | * VRF. So let's look in all of them | |
717 | */ | |
86f07f44 PG |
718 | zns = zebra_ns_lookup(NS_DEFAULT); |
719 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
720 | if (ifp && if_is_operative(ifp)) |
721 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
722 | else | |
723 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
724 | break; | |
d62a17ae | 725 | case NEXTHOP_TYPE_IPV4: |
726 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
727 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
728 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
729 | else | |
730 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
731 | break; | |
732 | ||
733 | case NEXTHOP_TYPE_IPV6: | |
734 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
735 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
736 | else | |
737 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
738 | break; | |
739 | ||
740 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
741 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
742 | ifp = if_lookup_by_index(nexthop->ifindex, |
743 | nexthop->vrf_id); | |
d62a17ae | 744 | if (ifp && if_is_operative(ifp)) |
745 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
746 | else | |
747 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
748 | } else { | |
749 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
750 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
751 | else | |
752 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
753 | } | |
754 | break; | |
755 | ||
10cc80ca | 756 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 757 | break; |
758 | } | |
759 | ||
760 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 761 | } |
762 | ||
763 | /* | |
764 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
765 | * reachability and select the best. Multipath entries are also | |
766 | * marked. This is invoked when an LSP scheduled for processing (due | |
767 | * to some change) is examined. | |
768 | */ | |
8f74a383 | 769 | static void lsp_select_best_nhlfe(struct zebra_lsp *lsp) |
d62a17ae | 770 | { |
f2595bd5 DS |
771 | struct zebra_nhlfe *nhlfe; |
772 | struct zebra_nhlfe *best; | |
d62a17ae | 773 | struct nexthop *nexthop; |
774 | int changed = 0; | |
775 | ||
776 | if (!lsp) | |
777 | return; | |
778 | ||
779 | best = NULL; | |
780 | lsp->num_ecmp = 0; | |
781 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
782 | ||
783 | /* | |
784 | * First compute the best path, after checking nexthop status. We are | |
5e29e1a1 | 785 | * only concerned with non-deleted NHLFEs. |
d62a17ae | 786 | */ |
ee70f629 | 787 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 788 | /* Clear selection flags. */ |
789 | UNSET_FLAG(nhlfe->flags, | |
790 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
791 | ||
792 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
793 | && nhlfe_nexthop_active(nhlfe)) { | |
794 | if (!best || (nhlfe->distance < best->distance)) | |
795 | best = nhlfe; | |
796 | } | |
797 | } | |
798 | ||
799 | lsp->best_nhlfe = best; | |
800 | if (!lsp->best_nhlfe) | |
801 | return; | |
802 | ||
5e29e1a1 MS |
803 | /* |
804 | * Check the active status of backup nhlfes also | |
805 | */ | |
806 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
807 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
808 | (void)nhlfe_nexthop_active(nhlfe); | |
809 | } | |
810 | ||
d62a17ae | 811 | /* Mark best NHLFE as selected. */ |
812 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
813 | ||
814 | /* | |
815 | * If best path exists, see if there is ECMP. While doing this, note if | |
816 | * a | |
817 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
818 | * still selected has a change or an installed entry is to be removed. | |
819 | */ | |
ee70f629 | 820 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 821 | int nh_chg, nh_sel, nh_inst; |
822 | ||
823 | nexthop = nhlfe->nexthop; | |
824 | if (!nexthop) // unexpected | |
825 | continue; | |
826 | ||
827 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
828 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
829 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
830 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
831 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
832 | lsp->num_ecmp++; | |
833 | } | |
834 | ||
835 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
836 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
837 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
838 | nh_inst = | |
839 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
840 | ||
841 | if ((nh_sel && !nh_inst) | |
842 | || (nh_sel && nh_inst && nh_chg) | |
843 | || (nh_inst && !nh_sel)) | |
844 | changed = 1; | |
845 | } | |
846 | ||
847 | /* We have finished examining, clear changed flag. */ | |
848 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
849 | } | |
850 | ||
851 | if (changed) | |
852 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 853 | } |
854 | ||
855 | /* | |
856 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
857 | * process exit. | |
858 | */ | |
e3b78da8 | 859 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 860 | { |
8f74a383 | 861 | struct zebra_lsp *lsp; |
40c7bdb0 | 862 | |
8f74a383 | 863 | lsp = (struct zebra_lsp *)bucket->data; |
4a83e7a0 | 864 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 865 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 866 | } |
867 | ||
868 | /* | |
869 | * Schedule LSP forwarding entry for processing. Called upon changes | |
870 | * that may impact LSPs such as nexthop / connected route changes. | |
871 | */ | |
e3b78da8 | 872 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 873 | { |
8f74a383 | 874 | struct zebra_lsp *lsp; |
40c7bdb0 | 875 | |
8f74a383 | 876 | lsp = (struct zebra_lsp *)bucket->data; |
2aa2a407 MS |
877 | |
878 | /* In the common flow, this is used when external events occur. For | |
879 | * LSPs with backup nhlfes, we'll assume that the forwarding | |
880 | * plane will use the backups to handle these events, until the | |
881 | * owning protocol can react. | |
882 | */ | |
883 | if (ctxt == NULL) { | |
884 | /* Skip LSPs with backups */ | |
885 | if (nhlfe_list_first(&lsp->backup_nhlfe_list) != NULL) { | |
886 | if (IS_ZEBRA_DEBUG_MPLS_DETAIL) | |
887 | zlog_debug("%s: skip LSP in-label %u", | |
888 | __func__, lsp->ile.in_label); | |
889 | return; | |
890 | } | |
891 | } | |
892 | ||
0af35d90 | 893 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 894 | } |
895 | ||
896 | /* | |
897 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
898 | * any multipaths and update or delete from the kernel, as needed. | |
899 | */ | |
d62a17ae | 900 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
901 | { | |
8f74a383 | 902 | struct zebra_lsp *lsp; |
f2595bd5 | 903 | struct zebra_nhlfe *oldbest, *newbest; |
d62a17ae | 904 | char buf[BUFSIZ], buf2[BUFSIZ]; |
905 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 906 | enum zebra_dplane_result res; |
d62a17ae | 907 | |
8f74a383 | 908 | lsp = (struct zebra_lsp *)data; |
d62a17ae | 909 | if (!lsp) // unexpected |
910 | return WQ_SUCCESS; | |
911 | ||
912 | oldbest = lsp->best_nhlfe; | |
913 | ||
914 | /* Select best NHLFE(s) */ | |
915 | lsp_select_best_nhlfe(lsp); | |
916 | ||
917 | newbest = lsp->best_nhlfe; | |
918 | ||
919 | if (IS_ZEBRA_DEBUG_MPLS) { | |
920 | if (oldbest) | |
5e29e1a1 | 921 | nhlfe2str(oldbest, buf, sizeof(buf)); |
d62a17ae | 922 | if (newbest) |
5e29e1a1 | 923 | nhlfe2str(newbest, buf2, sizeof(buf2)); |
d62a17ae | 924 | zlog_debug( |
3efd0893 | 925 | "Process LSP in-label %u oldbest %s newbest %s flags 0x%x ecmp# %d", |
d62a17ae | 926 | lsp->ile.in_label, oldbest ? buf : "NULL", |
927 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
928 | } | |
929 | ||
930 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
931 | /* Not already installed */ | |
932 | if (newbest) { | |
2b63430c DS |
933 | |
934 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
935 | |
936 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 937 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
938 | /* Set 'installed' flag so we will know |
939 | * that an install is in-flight. | |
940 | */ | |
941 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
942 | ||
943 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 944 | break; |
ea1c14f6 | 945 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
946 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
947 | "LSP Install Failure: %u", | |
948 | lsp->ile.in_label); | |
7c5d0e18 | 949 | break; |
ea1c14f6 | 950 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
951 | zvrf->lsp_installs++; |
952 | break; | |
953 | } | |
d62a17ae | 954 | } |
955 | } else { | |
956 | /* Installed, may need an update and/or delete. */ | |
957 | if (!newbest) { | |
d37f4d6c MS |
958 | res = dplane_lsp_delete(lsp); |
959 | ||
960 | /* We do some of the lsp cleanup immediately for | |
961 | * deletes. | |
962 | */ | |
963 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
964 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 965 | |
d37f4d6c | 966 | switch (res) { |
ea1c14f6 | 967 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 968 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 969 | break; |
ea1c14f6 | 970 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
971 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
972 | "LSP Deletion Failure: %u", | |
973 | lsp->ile.in_label); | |
7c5d0e18 | 974 | break; |
ea1c14f6 | 975 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
976 | zvrf->lsp_removals++; |
977 | break; | |
978 | } | |
d62a17ae | 979 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
f2595bd5 | 980 | struct zebra_nhlfe *nhlfe; |
9fa38ec6 | 981 | struct nexthop *nexthop; |
2b63430c DS |
982 | |
983 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
984 | |
985 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 986 | * so we know an update is in-flight. |
d37f4d6c | 987 | */ |
e6d44ec7 | 988 | |
9fa38ec6 DS |
989 | /* |
990 | * Any NHLFE that was installed but is not | |
991 | * selected now needs to have its flags updated. | |
992 | */ | |
ee70f629 | 993 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
9fa38ec6 DS |
994 | nexthop = nhlfe->nexthop; |
995 | if (!nexthop) | |
996 | continue; | |
997 | ||
998 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
999 | NHLFE_FLAG_INSTALLED) |
1000 | && !CHECK_FLAG(nhlfe->flags, | |
1001 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
1002 | UNSET_FLAG(nhlfe->flags, |
1003 | NHLFE_FLAG_INSTALLED); | |
1004 | UNSET_FLAG(nexthop->flags, | |
1005 | NEXTHOP_FLAG_FIB); | |
1006 | } | |
1007 | } | |
1008 | ||
d37f4d6c | 1009 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 1010 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 1011 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 1012 | break; |
ea1c14f6 | 1013 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
1014 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1015 | "LSP Update Failure: %u", | |
1016 | lsp->ile.in_label); | |
7c5d0e18 | 1017 | break; |
ea1c14f6 | 1018 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1019 | zvrf->lsp_installs++; |
1020 | break; | |
1021 | } | |
d62a17ae | 1022 | } |
1023 | } | |
1024 | ||
1025 | return WQ_SUCCESS; | |
40c7bdb0 | 1026 | } |
1027 | ||
1028 | ||
1029 | /* | |
1030 | * Callback upon processing completion of a LSP forwarding entry. | |
1031 | */ | |
d62a17ae | 1032 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1033 | { |
d62a17ae | 1034 | struct zebra_vrf *zvrf; |
8f74a383 | 1035 | struct zebra_lsp *lsp; |
d62a17ae | 1036 | struct hash *lsp_table; |
f2595bd5 | 1037 | struct zebra_nhlfe *nhlfe; |
b0d10d93 MS |
1038 | |
1039 | /* If zebra is shutting down, don't delete any structs, | |
1040 | * just ignore this callback. The LSPs will be cleaned up | |
1041 | * during the shutdown processing. | |
1042 | */ | |
0a5f9773 | 1043 | if (zebra_router_in_shutdown()) |
b0d10d93 | 1044 | return; |
40c7bdb0 | 1045 | |
d62a17ae | 1046 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1047 | assert(zvrf); | |
40c7bdb0 | 1048 | |
d62a17ae | 1049 | lsp_table = zvrf->lsp_table; |
1050 | if (!lsp_table) // unexpected | |
1051 | return; | |
40c7bdb0 | 1052 | |
8f74a383 | 1053 | lsp = (struct zebra_lsp *)data; |
d62a17ae | 1054 | if (!lsp) // unexpected |
1055 | return; | |
40c7bdb0 | 1056 | |
d62a17ae | 1057 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1058 | * exist, | |
1059 | * delete LSP entry also. | |
1060 | */ | |
1061 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1062 | |
ee70f629 | 1063 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1064 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) |
1065 | nhlfe_del(nhlfe); | |
1066 | } | |
40c7bdb0 | 1067 | |
1323491d MS |
1068 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1069 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1070 | nhlfe_del(nhlfe); | |
1071 | } | |
1072 | ||
1073 | lsp_check_free(lsp_table, &lsp); | |
40c7bdb0 | 1074 | } |
1075 | ||
1076 | /* | |
1077 | * Callback upon finishing the processing of all scheduled | |
1078 | * LSP forwarding entries. | |
1079 | */ | |
d62a17ae | 1080 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1081 | { |
d62a17ae | 1082 | /* Nothing to do for now. */ |
40c7bdb0 | 1083 | } |
1084 | ||
1085 | /* | |
1086 | * Add LSP forwarding entry to queue for subsequent processing. | |
1087 | */ | |
8f74a383 | 1088 | static int lsp_processq_add(struct zebra_lsp *lsp) |
40c7bdb0 | 1089 | { |
d62a17ae | 1090 | /* If already scheduled, exit. */ |
1091 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1092 | return 0; | |
40c7bdb0 | 1093 | |
e2353ec2 | 1094 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1095 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1096 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1097 | return -1; |
1098 | } | |
33c32282 | 1099 | |
e2353ec2 | 1100 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1101 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1102 | return 0; | |
40c7bdb0 | 1103 | } |
1104 | ||
1105 | /* | |
1106 | * Callback to allocate LSP forwarding table entry. | |
1107 | */ | |
d62a17ae | 1108 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1109 | { |
a7d2146a | 1110 | const struct zebra_ile *ile = p; |
8f74a383 | 1111 | struct zebra_lsp *lsp; |
40c7bdb0 | 1112 | |
8f74a383 | 1113 | lsp = XCALLOC(MTYPE_LSP, sizeof(struct zebra_lsp)); |
d62a17ae | 1114 | lsp->ile = *ile; |
ee70f629 | 1115 | nhlfe_list_init(&lsp->nhlfe_list); |
cd4bb96f | 1116 | nhlfe_list_init(&lsp->backup_nhlfe_list); |
40c7bdb0 | 1117 | |
d62a17ae | 1118 | if (IS_ZEBRA_DEBUG_MPLS) |
1119 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1120 | |
d62a17ae | 1121 | return ((void *)lsp); |
40c7bdb0 | 1122 | } |
1123 | ||
1323491d MS |
1124 | /* |
1125 | * Check whether lsp can be freed - no nhlfes, e.g., and call free api | |
1126 | */ | |
8f74a383 | 1127 | static void lsp_check_free(struct hash *lsp_table, struct zebra_lsp **plsp) |
1323491d | 1128 | { |
8f74a383 | 1129 | struct zebra_lsp *lsp; |
1323491d MS |
1130 | |
1131 | if (plsp == NULL || *plsp == NULL) | |
1132 | return; | |
1133 | ||
1134 | lsp = *plsp; | |
1135 | ||
1136 | if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL) && | |
1137 | (nhlfe_list_first(&lsp->backup_nhlfe_list) == NULL) && | |
1138 | !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1139 | lsp_free(lsp_table, plsp); | |
1140 | } | |
1141 | ||
1cf42d6a DS |
1142 | static void lsp_free_nhlfe(struct zebra_lsp *lsp) |
1143 | { | |
1144 | struct zebra_nhlfe *nhlfe; | |
1145 | ||
1146 | while ((nhlfe = nhlfe_list_first(&lsp->nhlfe_list))) { | |
1147 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
1148 | nhlfe_free(nhlfe); | |
1149 | } | |
1150 | ||
1151 | while ((nhlfe = nhlfe_list_first(&lsp->backup_nhlfe_list))) { | |
1152 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1153 | nhlfe_free(nhlfe); | |
1154 | } | |
1155 | } | |
1156 | ||
ebab422a MS |
1157 | /* |
1158 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1159 | * free LSP object. | |
1160 | */ | |
8f74a383 | 1161 | static void lsp_free(struct hash *lsp_table, struct zebra_lsp **plsp) |
ebab422a | 1162 | { |
8f74a383 | 1163 | struct zebra_lsp *lsp; |
ebab422a MS |
1164 | |
1165 | if (plsp == NULL || *plsp == NULL) | |
1166 | return; | |
1167 | ||
1168 | lsp = *plsp; | |
1169 | ||
1170 | if (IS_ZEBRA_DEBUG_MPLS) | |
1171 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1172 | lsp->ile.in_label, lsp->flags); | |
1173 | ||
1cf42d6a | 1174 | lsp_free_nhlfe(lsp); |
cd4bb96f | 1175 | |
ebab422a MS |
1176 | hash_release(lsp_table, &lsp->ile); |
1177 | XFREE(MTYPE_LSP, lsp); | |
1178 | ||
1179 | *plsp = NULL; | |
1180 | } | |
1181 | ||
40c7bdb0 | 1182 | /* |
1183 | * Create printable string for NHLFE entry. | |
1184 | */ | |
f2595bd5 | 1185 | static char *nhlfe2str(const struct zebra_nhlfe *nhlfe, char *buf, int size) |
40c7bdb0 | 1186 | { |
608a57c0 | 1187 | const struct nexthop *nexthop; |
40c7bdb0 | 1188 | |
d62a17ae | 1189 | buf[0] = '\0'; |
1190 | nexthop = nhlfe->nexthop; | |
1191 | switch (nexthop->type) { | |
1192 | case NEXTHOP_TYPE_IPV4: | |
1193 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1194 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1195 | break; | |
1196 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1197 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1198 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1199 | break; | |
b9abd9ad DS |
1200 | case NEXTHOP_TYPE_IFINDEX: |
1201 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
10cc80ca | 1202 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 1203 | break; |
1204 | } | |
40c7bdb0 | 1205 | |
d62a17ae | 1206 | return buf; |
40c7bdb0 | 1207 | } |
1208 | ||
1209 | /* | |
1210 | * Check if NHLFE matches with search info passed. | |
1211 | */ | |
f2595bd5 DS |
1212 | static int nhlfe_nhop_match(struct zebra_nhlfe *nhlfe, |
1213 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1214 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1215 | { |
d62a17ae | 1216 | struct nexthop *nhop; |
1217 | int cmp = 1; | |
40c7bdb0 | 1218 | |
d62a17ae | 1219 | nhop = nhlfe->nexthop; |
1220 | if (!nhop) | |
1221 | return 1; | |
40c7bdb0 | 1222 | |
d62a17ae | 1223 | if (nhop->type != gtype) |
1224 | return 1; | |
40c7bdb0 | 1225 | |
d62a17ae | 1226 | switch (nhop->type) { |
1227 | case NEXTHOP_TYPE_IPV4: | |
1228 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1229 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1230 | sizeof(struct in_addr)); | |
1231 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1232 | cmp = !(nhop->ifindex == ifindex); | |
1233 | break; | |
1234 | case NEXTHOP_TYPE_IPV6: | |
1235 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1236 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1237 | sizeof(struct in6_addr)); | |
1238 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1239 | cmp = !(nhop->ifindex == ifindex); | |
1240 | break; | |
b9abd9ad DS |
1241 | case NEXTHOP_TYPE_IFINDEX: |
1242 | cmp = !(nhop->ifindex == ifindex); | |
1243 | break; | |
10cc80ca | 1244 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 1245 | break; |
1246 | } | |
40c7bdb0 | 1247 | |
d62a17ae | 1248 | return cmp; |
40c7bdb0 | 1249 | } |
1250 | ||
1251 | ||
1252 | /* | |
1253 | * Locate NHLFE that matches with passed info. | |
1254 | */ | |
f2595bd5 DS |
1255 | static struct zebra_nhlfe *nhlfe_find(struct nhlfe_list_head *list, |
1256 | enum lsp_types_t lsp_type, | |
1257 | enum nexthop_types_t gtype, | |
1258 | const union g_addr *gate, | |
1259 | ifindex_t ifindex) | |
40c7bdb0 | 1260 | { |
f2595bd5 | 1261 | struct zebra_nhlfe *nhlfe; |
40c7bdb0 | 1262 | |
ee70f629 | 1263 | frr_each_safe(nhlfe_list, list, nhlfe) { |
d62a17ae | 1264 | if (nhlfe->type != lsp_type) |
1265 | continue; | |
1266 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1267 | break; | |
1268 | } | |
40c7bdb0 | 1269 | |
d62a17ae | 1270 | return nhlfe; |
40c7bdb0 | 1271 | } |
1272 | ||
ee70f629 MS |
1273 | /* |
1274 | * Allocate and init new NHLFE. | |
1275 | */ | |
f2595bd5 | 1276 | static struct zebra_nhlfe * |
8f74a383 | 1277 | nhlfe_alloc(struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
f2595bd5 DS |
1278 | enum nexthop_types_t gtype, const union g_addr *gate, |
1279 | ifindex_t ifindex, uint8_t num_labels, const mpls_label_t *labels) | |
d62a17ae | 1280 | { |
f2595bd5 | 1281 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 1282 | struct nexthop *nexthop; |
1283 | ||
3e0a9b40 | 1284 | assert(lsp); |
d62a17ae | 1285 | |
f2595bd5 | 1286 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(struct zebra_nhlfe)); |
d62a17ae | 1287 | |
1288 | nhlfe->lsp = lsp; | |
1289 | nhlfe->type = lsp_type; | |
1290 | nhlfe->distance = lsp_distance(lsp_type); | |
1291 | ||
1292 | nexthop = nexthop_new(); | |
cd4bb96f | 1293 | |
5065db0a | 1294 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1295 | |
4a7371e9 | 1296 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1297 | nexthop->type = gtype; |
1298 | switch (nexthop->type) { | |
1299 | case NEXTHOP_TYPE_IPV4: | |
1300 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1301 | nexthop->gate.ipv4 = gate->ipv4; | |
1302 | if (ifindex) | |
1303 | nexthop->ifindex = ifindex; | |
1304 | break; | |
1305 | case NEXTHOP_TYPE_IPV6: | |
1306 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1307 | nexthop->gate.ipv6 = gate->ipv6; | |
1308 | if (ifindex) | |
1309 | nexthop->ifindex = ifindex; | |
1310 | break; | |
b9abd9ad DS |
1311 | case NEXTHOP_TYPE_IFINDEX: |
1312 | nexthop->ifindex = ifindex; | |
1313 | break; | |
10cc80ca | 1314 | case NEXTHOP_TYPE_BLACKHOLE: |
a44e3106 MS |
1315 | if (IS_ZEBRA_DEBUG_MPLS) |
1316 | zlog_debug("%s: invalid: blackhole nexthop", __func__); | |
1317 | ||
d62a17ae | 1318 | nexthop_free(nexthop); |
1319 | XFREE(MTYPE_NHLFE, nhlfe); | |
1320 | return NULL; | |
d62a17ae | 1321 | } |
d62a17ae | 1322 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1323 | |
1324 | return nhlfe; | |
1325 | } | |
1326 | ||
1327 | /* | |
cc1b9746 MS |
1328 | * Add primary or backup NHLFE. Base entry must have been created and |
1329 | * duplicate check done. | |
ee70f629 | 1330 | */ |
8f74a383 | 1331 | static struct zebra_nhlfe *nhlfe_add(struct zebra_lsp *lsp, |
f2595bd5 DS |
1332 | enum lsp_types_t lsp_type, |
1333 | enum nexthop_types_t gtype, | |
1334 | const union g_addr *gate, | |
1335 | ifindex_t ifindex, uint8_t num_labels, | |
1336 | const mpls_label_t *labels, bool is_backup) | |
ee70f629 | 1337 | { |
f2595bd5 | 1338 | struct zebra_nhlfe *nhlfe; |
ee70f629 MS |
1339 | |
1340 | if (!lsp) | |
1341 | return NULL; | |
1342 | ||
a44e3106 MS |
1343 | /* Must have labels */ |
1344 | if (num_labels == 0 || labels == NULL) { | |
1345 | if (IS_ZEBRA_DEBUG_MPLS) | |
1346 | zlog_debug("%s: invalid nexthop: no labels", __func__); | |
1347 | ||
1348 | return NULL; | |
1349 | } | |
1350 | ||
ee70f629 | 1351 | /* Allocate new object */ |
cd4bb96f MS |
1352 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1353 | labels); | |
1354 | ||
6140b3b4 DS |
1355 | if (!nhlfe) |
1356 | return NULL; | |
1357 | ||
cc1b9746 MS |
1358 | /* Enqueue to LSP: primaries at head of list, backups at tail */ |
1359 | if (is_backup) { | |
1360 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
1361 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); | |
1362 | } else | |
1363 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); | |
d62a17ae | 1364 | |
1365 | return nhlfe; | |
40c7bdb0 | 1366 | } |
1367 | ||
1368 | /* | |
cd4bb96f MS |
1369 | * Common delete for NHLFEs. |
1370 | */ | |
f2595bd5 | 1371 | static void nhlfe_free(struct zebra_nhlfe *nhlfe) |
cd4bb96f MS |
1372 | { |
1373 | if (!nhlfe) | |
1374 | return; | |
1375 | ||
1376 | /* Free nexthop. */ | |
1377 | if (nhlfe->nexthop) | |
1378 | nexthop_free(nhlfe->nexthop); | |
1379 | ||
1380 | nhlfe->nexthop = NULL; | |
1381 | ||
1382 | XFREE(MTYPE_NHLFE, nhlfe); | |
1383 | } | |
1384 | ||
1385 | ||
1386 | /* | |
1387 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1388 | */ |
f2595bd5 | 1389 | static int nhlfe_del(struct zebra_nhlfe *nhlfe) |
40c7bdb0 | 1390 | { |
8f74a383 | 1391 | struct zebra_lsp *lsp; |
40c7bdb0 | 1392 | |
d62a17ae | 1393 | if (!nhlfe) |
1394 | return -1; | |
40c7bdb0 | 1395 | |
d62a17ae | 1396 | lsp = nhlfe->lsp; |
1397 | if (!lsp) | |
1398 | return -1; | |
40c7bdb0 | 1399 | |
d62a17ae | 1400 | if (nhlfe == lsp->best_nhlfe) |
1401 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1402 | |
ee70f629 | 1403 | /* Unlink from LSP */ |
cd4bb96f MS |
1404 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1405 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1406 | else | |
1407 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1408 | |
cd4bb96f MS |
1409 | nhlfe->lsp = NULL; |
1410 | ||
1411 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1412 | |
d62a17ae | 1413 | return 0; |
40c7bdb0 | 1414 | } |
1415 | ||
a64448ba DS |
1416 | /* |
1417 | * Update label for NHLFE entry. | |
1418 | */ | |
f2595bd5 | 1419 | static void nhlfe_out_label_update(struct zebra_nhlfe *nhlfe, |
8ecdb26e | 1420 | struct mpls_label_stack *nh_label) |
d62a17ae | 1421 | { |
1422 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1423 | } | |
1424 | ||
8f74a383 | 1425 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, struct zebra_lsp *lsp, |
d62a17ae | 1426 | enum lsp_types_t type) |
1427 | { | |
f2595bd5 | 1428 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 1429 | int schedule_lsp = 0; |
1430 | char buf[BUFSIZ]; | |
1431 | ||
4a2a5236 MS |
1432 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1433 | schedule_lsp = 1; | |
1434 | ||
d62a17ae | 1435 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ |
ee70f629 | 1436 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1437 | /* Skip non-static NHLFEs */ |
1438 | if (nhlfe->type != type) | |
1439 | continue; | |
1440 | ||
1441 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1442 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 1443 | zlog_debug( |
1444 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1445 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1446 | } | |
1447 | ||
1448 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1449 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1450 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1451 | schedule_lsp = 1; | |
1452 | } else { | |
1453 | nhlfe_del(nhlfe); | |
1454 | } | |
1455 | } | |
1456 | ||
f2e7f4eb MS |
1457 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1458 | /* Skip non-static NHLFEs */ | |
1459 | if (nhlfe->type != type) | |
1460 | continue; | |
1461 | ||
1462 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1463 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
f2e7f4eb MS |
1464 | zlog_debug( |
1465 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1466 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1467 | } | |
1468 | ||
1469 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1470 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1471 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1472 | schedule_lsp = 1; | |
1473 | } else { | |
1474 | nhlfe_del(nhlfe); | |
1475 | } | |
1476 | } | |
1477 | ||
d62a17ae | 1478 | /* Queue LSP for processing, if needed, else delete. */ |
1479 | if (schedule_lsp) { | |
4a2a5236 MS |
1480 | if (IS_ZEBRA_DEBUG_MPLS) { |
1481 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
1482 | lsp->ile.in_label, lsp->flags); | |
1483 | } | |
d62a17ae | 1484 | if (lsp_processq_add(lsp)) |
1485 | return -1; | |
1323491d MS |
1486 | } else { |
1487 | lsp_check_free(lsp_table, &lsp); | |
1488 | } | |
d62a17ae | 1489 | |
1490 | return 0; | |
40c7bdb0 | 1491 | } |
1492 | ||
ce549947 RW |
1493 | /* |
1494 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1495 | * If no other NHLFEs exist, the entry would be deleted. | |
1496 | */ | |
d62a17ae | 1497 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1498 | mpls_label_t in_label) | |
ce549947 | 1499 | { |
d62a17ae | 1500 | struct hash *lsp_table; |
a7d2146a | 1501 | struct zebra_ile tmp_ile; |
8f74a383 | 1502 | struct zebra_lsp *lsp; |
ce549947 | 1503 | |
d62a17ae | 1504 | /* Lookup table. */ |
1505 | lsp_table = zvrf->lsp_table; | |
1506 | if (!lsp_table) | |
1507 | return -1; | |
ce549947 | 1508 | |
d62a17ae | 1509 | /* If entry is not present, exit. */ |
1510 | tmp_ile.in_label = in_label; | |
1511 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1512 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1513 | return 0; |
ce549947 | 1514 | |
d62a17ae | 1515 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1516 | } |
1517 | ||
f2595bd5 | 1518 | static json_object *nhlfe_json(struct zebra_nhlfe *nhlfe) |
b78b820d | 1519 | { |
d62a17ae | 1520 | json_object *json_nhlfe = NULL; |
3c0e1622 | 1521 | json_object *json_backups = NULL; |
31f937fb | 1522 | json_object *json_label_stack; |
d62a17ae | 1523 | struct nexthop *nexthop = nhlfe->nexthop; |
3c0e1622 | 1524 | int i; |
b78b820d | 1525 | |
d62a17ae | 1526 | json_nhlfe = json_object_new_object(); |
1527 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1528 | json_object_int_add(json_nhlfe, "outLabel", | |
1529 | nexthop->nh_label->label[0]); | |
31f937fb SM |
1530 | |
1531 | json_label_stack = json_object_new_array(); | |
1532 | json_object_object_add(json_nhlfe, "outLabelStack", json_label_stack); | |
1533 | for (i = 0; i < nexthop->nh_label->num_labels; i++) | |
1534 | json_object_array_add( | |
1535 | json_label_stack, | |
1536 | json_object_new_int(nexthop->nh_label->label[i])); | |
1537 | ||
d62a17ae | 1538 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); |
b78b820d | 1539 | |
d62a17ae | 1540 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1541 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1542 | |
d62a17ae | 1543 | switch (nexthop->type) { |
1544 | case NEXTHOP_TYPE_IPV4: | |
1545 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
08edf9c6 DA |
1546 | json_object_string_addf(json_nhlfe, "nexthop", "%pI4", |
1547 | &nexthop->gate.ipv4); | |
d62a17ae | 1548 | break; |
1549 | case NEXTHOP_TYPE_IPV6: | |
1550 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
08edf9c6 DA |
1551 | json_object_string_addf(json_nhlfe, "nexthop", "%pI6", |
1552 | &nexthop->gate.ipv6); | |
d62a17ae | 1553 | |
1554 | if (nexthop->ifindex) | |
4a7371e9 DS |
1555 | json_object_string_add(json_nhlfe, "interface", |
1556 | ifindex2ifname(nexthop->ifindex, | |
1557 | nexthop->vrf_id)); | |
d62a17ae | 1558 | break; |
10cc80ca | 1559 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
1560 | if (nexthop->ifindex) |
1561 | json_object_string_add(json_nhlfe, "interface", | |
1562 | ifindex2ifname(nexthop->ifindex, | |
1563 | nexthop->vrf_id)); | |
1564 | break; | |
1565 | case NEXTHOP_TYPE_BLACKHOLE: | |
d62a17ae | 1566 | break; |
1567 | } | |
3c0e1622 MS |
1568 | |
1569 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
1570 | json_backups = json_object_new_array(); | |
1571 | for (i = 0; i < nexthop->backup_num; i++) { | |
1572 | json_object_array_add( | |
1573 | json_backups, | |
1574 | json_object_new_int(nexthop->backup_idx[i])); | |
1575 | } | |
1576 | ||
1577 | json_object_object_add(json_nhlfe, "backupIndex", | |
1578 | json_backups); | |
1579 | } | |
1580 | ||
d62a17ae | 1581 | return json_nhlfe; |
b78b820d | 1582 | } |
1583 | ||
3ab18ff2 | 1584 | /* |
1585 | * Print the NHLFE for a LSP forwarding entry. | |
1586 | */ | |
f2595bd5 | 1587 | static void nhlfe_print(struct zebra_nhlfe *nhlfe, struct vty *vty, |
3c0e1622 | 1588 | const char *indent) |
d62a17ae | 1589 | { |
1590 | struct nexthop *nexthop; | |
a29c2887 | 1591 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1592 | |
1593 | nexthop = nhlfe->nexthop; | |
1594 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1595 | return; | |
1596 | ||
1597 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1598 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1599 | mpls_label2str(nexthop->nh_label->num_labels, |
1600 | nexthop->nh_label->label, | |
1601 | buf, sizeof(buf), 0), | |
d62a17ae | 1602 | nhlfe->distance); |
3c0e1622 MS |
1603 | |
1604 | if (indent) | |
1605 | vty_out(vty, "%s", indent); | |
1606 | ||
d62a17ae | 1607 | switch (nexthop->type) { |
1608 | case NEXTHOP_TYPE_IPV4: | |
1609 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
9bcef951 | 1610 | vty_out(vty, " via %pI4", &nexthop->gate.ipv4); |
d62a17ae | 1611 | if (nexthop->ifindex) |
1612 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1613 | ifindex2ifname(nexthop->ifindex, |
1614 | nexthop->vrf_id)); | |
d62a17ae | 1615 | break; |
1616 | case NEXTHOP_TYPE_IPV6: | |
1617 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1618 | vty_out(vty, " via %s", | |
2896f40e MS |
1619 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
1620 | sizeof(buf))); | |
d62a17ae | 1621 | if (nexthop->ifindex) |
1622 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1623 | ifindex2ifname(nexthop->ifindex, |
1624 | nexthop->vrf_id)); | |
d62a17ae | 1625 | break; |
10cc80ca | 1626 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
1627 | if (nexthop->ifindex) |
1628 | vty_out(vty, " dev %s", | |
1629 | ifindex2ifname(nexthop->ifindex, | |
1630 | nexthop->vrf_id)); | |
1631 | break; | |
1632 | case NEXTHOP_TYPE_BLACKHOLE: | |
d62a17ae | 1633 | break; |
1634 | } | |
5e29e1a1 MS |
1635 | vty_out(vty, "%s", |
1636 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)" | |
1637 | : ""); | |
996c9314 LB |
1638 | vty_out(vty, "%s", |
1639 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1640 | : ""); | |
d62a17ae | 1641 | vty_out(vty, "\n"); |
3ab18ff2 | 1642 | } |
1643 | ||
1644 | /* | |
1645 | * Print an LSP forwarding entry. | |
1646 | */ | |
8f74a383 | 1647 | static void lsp_print(struct vty *vty, struct zebra_lsp *lsp) |
3ab18ff2 | 1648 | { |
f2595bd5 | 1649 | struct zebra_nhlfe *nhlfe, *backup; |
474aebd9 | 1650 | int i, j; |
3ab18ff2 | 1651 | |
d62a17ae | 1652 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1653 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1654 | : ""); | |
3ab18ff2 | 1655 | |
a29c2887 | 1656 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3c0e1622 | 1657 | nhlfe_print(nhlfe, vty, NULL); |
a29c2887 | 1658 | |
3c0e1622 | 1659 | if (nhlfe->nexthop == NULL || |
474aebd9 MS |
1660 | !CHECK_FLAG(nhlfe->nexthop->flags, |
1661 | NEXTHOP_FLAG_HAS_BACKUP)) | |
1662 | continue; | |
a29c2887 | 1663 | |
474aebd9 | 1664 | /* Backup nhlfes: find backups in backup list */ |
a29c2887 | 1665 | |
474aebd9 | 1666 | for (j = 0; j < nhlfe->nexthop->backup_num; j++) { |
a29c2887 | 1667 | i = 0; |
5e29e1a1 | 1668 | backup = NULL; |
a29c2887 | 1669 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { |
474aebd9 | 1670 | if (i == nhlfe->nexthop->backup_idx[j]) |
a29c2887 MS |
1671 | break; |
1672 | i++; | |
1673 | } | |
1674 | ||
1675 | if (backup) { | |
1676 | vty_out(vty, " [backup %d]", i); | |
3c0e1622 | 1677 | nhlfe_print(backup, vty, " "); |
a29c2887 MS |
1678 | } |
1679 | } | |
1680 | } | |
3ab18ff2 | 1681 | } |
1682 | ||
1683 | /* | |
b78b820d | 1684 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1685 | */ |
8f74a383 | 1686 | static json_object *lsp_json(struct zebra_lsp *lsp) |
3ab18ff2 | 1687 | { |
f2595bd5 | 1688 | struct zebra_nhlfe *nhlfe = NULL; |
d62a17ae | 1689 | json_object *json = json_object_new_object(); |
1690 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1691 | |
d62a17ae | 1692 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1693 | |
d62a17ae | 1694 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1695 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1696 | |
ee70f629 | 1697 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1698 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1699 | |
d62a17ae | 1700 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
3c0e1622 MS |
1701 | json_nhlfe_list = NULL; |
1702 | ||
1703 | ||
1704 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
1705 | if (json_nhlfe_list == NULL) | |
1706 | json_nhlfe_list = json_object_new_array(); | |
1707 | ||
1708 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
1709 | } | |
1710 | ||
1711 | if (json_nhlfe_list) | |
1712 | json_object_object_add(json, "backupNexthops", json_nhlfe_list); | |
1713 | ||
d62a17ae | 1714 | return json; |
b78b820d | 1715 | } |
1716 | ||
1717 | ||
1718 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1719 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1720 | { |
d62a17ae | 1721 | unsigned int i; |
e3b78da8 | 1722 | struct hash_bucket *hb; |
d62a17ae | 1723 | struct list *sorted_list = list_new(); |
b78b820d | 1724 | |
d62a17ae | 1725 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1726 | |
d62a17ae | 1727 | for (i = 0; i < hash->size; i++) |
1728 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1729 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1730 | |
d62a17ae | 1731 | return sorted_list; |
3ab18ff2 | 1732 | } |
1733 | ||
7758e3f3 | 1734 | /* |
b78b820d | 1735 | * Compare two LSPs based on their label values. |
7758e3f3 | 1736 | */ |
8f74a383 | 1737 | static int lsp_cmp(const struct zebra_lsp *lsp1, const struct zebra_lsp *lsp2) |
7758e3f3 | 1738 | { |
d62a17ae | 1739 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1740 | return -1; | |
7758e3f3 | 1741 | |
d62a17ae | 1742 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1743 | return 1; | |
7758e3f3 | 1744 | |
d62a17ae | 1745 | return 0; |
7758e3f3 | 1746 | } |
1747 | ||
40c7bdb0 | 1748 | /* |
1749 | * Initialize work queue for processing changed LSPs. | |
1750 | */ | |
c87f5c23 | 1751 | static void mpls_processq_init(void) |
40c7bdb0 | 1752 | { |
e2353ec2 | 1753 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
40c7bdb0 | 1754 | |
e2353ec2 DS |
1755 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1756 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
e2353ec2 DS |
1757 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; |
1758 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1759 | zrouter.lsp_process_q->spec.hold = 10; | |
40c7bdb0 | 1760 | } |
1761 | ||
7758e3f3 | 1762 | |
d37f4d6c MS |
1763 | /* |
1764 | * Process LSP update results from zebra dataplane. | |
1765 | */ | |
1766 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1767 | { | |
1768 | struct zebra_vrf *zvrf; | |
31f937fb | 1769 | mpls_label_t label; |
a7d2146a | 1770 | struct zebra_ile tmp_ile; |
d37f4d6c | 1771 | struct hash *lsp_table; |
8f74a383 | 1772 | struct zebra_lsp *lsp; |
f2595bd5 | 1773 | struct zebra_nhlfe *nhlfe; |
d37f4d6c MS |
1774 | struct nexthop *nexthop; |
1775 | enum dplane_op_e op; | |
8841f96e | 1776 | enum zebra_dplane_result status; |
31f937fb | 1777 | enum zebra_sr_policy_update_label_mode update_mode; |
d37f4d6c MS |
1778 | |
1779 | op = dplane_ctx_get_op(ctx); | |
1780 | status = dplane_ctx_get_status(ctx); | |
1781 | ||
1782 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1783 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1784 | ctx, dplane_op2str(op), | |
1785 | dplane_ctx_get_in_label(ctx), | |
1786 | dplane_res2str(status)); | |
1787 | ||
31f937fb SM |
1788 | label = dplane_ctx_get_in_label(ctx); |
1789 | ||
d37f4d6c MS |
1790 | switch (op) { |
1791 | case DPLANE_OP_LSP_INSTALL: | |
1792 | case DPLANE_OP_LSP_UPDATE: | |
1793 | /* Look for zebra LSP object */ | |
1794 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1795 | if (zvrf == NULL) | |
1796 | break; | |
1797 | ||
1798 | lsp_table = zvrf->lsp_table; | |
1799 | ||
31f937fb | 1800 | tmp_ile.in_label = label; |
d37f4d6c MS |
1801 | lsp = hash_lookup(lsp_table, &tmp_ile); |
1802 | if (lsp == NULL) { | |
1803 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1804 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1805 | ctx, dplane_ctx_get_in_label(ctx)); | |
1806 | break; | |
1807 | } | |
1808 | ||
1809 | /* TODO -- Confirm that this result is still 'current' */ | |
1810 | ||
c3753405 | 1811 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1812 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1813 | clear_nhlfe_installed(lsp); | |
1814 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1815 | "LSP Install Failure: in-label %u", | |
1816 | lsp->ile.in_label); | |
c3753405 MS |
1817 | break; |
1818 | } | |
1819 | ||
1820 | /* Update zebra object */ | |
1821 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1822 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
1823 | nexthop = nhlfe->nexthop; | |
1824 | if (!nexthop) | |
1825 | continue; | |
1826 | ||
1827 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) && | |
1828 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) { | |
1829 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1830 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1831 | } | |
d37f4d6c MS |
1832 | } |
1833 | ||
31f937fb SM |
1834 | update_mode = (op == DPLANE_OP_LSP_INSTALL) |
1835 | ? ZEBRA_SR_POLICY_LABEL_CREATED | |
1836 | : ZEBRA_SR_POLICY_LABEL_UPDATED; | |
1837 | zebra_sr_policy_label_update(label, update_mode); | |
d37f4d6c MS |
1838 | break; |
1839 | ||
1840 | case DPLANE_OP_LSP_DELETE: | |
31f937fb | 1841 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
3fd385c6 DS |
1842 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
1843 | "LSP Deletion Failure: in-label %u", | |
1844 | dplane_ctx_get_in_label(ctx)); | |
31f937fb SM |
1845 | break; |
1846 | } | |
1847 | zebra_sr_policy_label_update(label, | |
1848 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
d37f4d6c MS |
1849 | break; |
1850 | ||
1851 | default: | |
1852 | break; | |
1853 | ||
1854 | } /* Switch */ | |
d37f4d6c MS |
1855 | } |
1856 | ||
104e3ad9 | 1857 | /* |
68110c42 MS |
1858 | * Process LSP installation info from two sets of nhlfes: a set from |
1859 | * a dplane notification, and a set from the zebra LSP object. Update | |
1860 | * counters of installed nexthops, and return whether the LSP has changed. | |
104e3ad9 | 1861 | */ |
68110c42 MS |
1862 | static bool compare_notif_nhlfes(const struct nhlfe_list_head *ctx_head, |
1863 | struct nhlfe_list_head *nhlfe_head, | |
1864 | int *start_counter, int *end_counter) | |
104e3ad9 | 1865 | { |
f2595bd5 DS |
1866 | struct zebra_nhlfe *nhlfe; |
1867 | const struct zebra_nhlfe *ctx_nhlfe; | |
104e3ad9 MS |
1868 | struct nexthop *nexthop; |
1869 | const struct nexthop *ctx_nexthop; | |
68110c42 | 1870 | int start_count = 0, end_count = 0; |
188a00e0 | 1871 | bool changed_p = false; |
104e3ad9 MS |
1872 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1873 | ||
68110c42 | 1874 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { |
104e3ad9 MS |
1875 | char buf[NEXTHOP_STRLEN]; |
1876 | ||
1877 | nexthop = nhlfe->nexthop; | |
1878 | if (!nexthop) | |
1879 | continue; | |
1880 | ||
1881 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1882 | start_count++; | |
1883 | ||
68110c42 | 1884 | ctx_nhlfe = NULL; |
104e3ad9 | 1885 | ctx_nexthop = NULL; |
68110c42 | 1886 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
104e3ad9 MS |
1887 | ctx_nexthop = ctx_nhlfe->nexthop; |
1888 | if (!ctx_nexthop) | |
1889 | continue; | |
1890 | ||
1891 | if ((ctx_nexthop->type == nexthop->type) && | |
1892 | nexthop_same(ctx_nexthop, nexthop)) { | |
1893 | /* Matched */ | |
1894 | break; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | if (is_debug) | |
1899 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1900 | ||
1901 | if (ctx_nhlfe && ctx_nexthop) { | |
1902 | if (is_debug) { | |
1903 | const char *tstr = ""; | |
1904 | ||
1905 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1906 | NHLFE_FLAG_INSTALLED)) | |
1907 | tstr = "not "; | |
1908 | ||
1909 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1910 | buf, tstr); | |
1911 | } | |
1912 | ||
188a00e0 | 1913 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1914 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1915 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1916 | |
1917 | if (!CHECK_FLAG(nhlfe->flags, | |
1918 | NHLFE_FLAG_INSTALLED)) | |
1919 | changed_p = true; | |
104e3ad9 MS |
1920 | |
1921 | /* Update counter */ | |
1922 | end_count++; | |
188a00e0 MS |
1923 | } else { |
1924 | ||
1925 | if (CHECK_FLAG(nhlfe->flags, | |
1926 | NHLFE_FLAG_INSTALLED)) | |
1927 | changed_p = true; | |
1928 | } | |
1929 | ||
1930 | } else { | |
1931 | /* Not mentioned in lfib set -> uninstalled */ | |
1932 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1933 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1934 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1935 | changed_p = true; | |
1936 | } | |
1937 | ||
1938 | if (is_debug) | |
1939 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1940 | buf); | |
1941 | } | |
1942 | } | |
1943 | ||
68110c42 MS |
1944 | if (start_counter) |
1945 | *start_counter += start_count; | |
1946 | if (end_counter) | |
1947 | *end_counter += end_count; | |
188a00e0 | 1948 | |
68110c42 MS |
1949 | return changed_p; |
1950 | } | |
188a00e0 | 1951 | |
68110c42 MS |
1952 | /* |
1953 | * Update an lsp nhlfe list from a dplane context, typically an async | |
1954 | * notification context. Update the LSP list to match the installed | |
1955 | * status from the context's list. | |
1956 | */ | |
1957 | static int update_nhlfes_from_ctx(struct nhlfe_list_head *nhlfe_head, | |
1958 | const struct nhlfe_list_head *ctx_head) | |
1959 | { | |
1960 | int ret = 0; | |
f2595bd5 DS |
1961 | struct zebra_nhlfe *nhlfe; |
1962 | const struct zebra_nhlfe *ctx_nhlfe; | |
68110c42 MS |
1963 | struct nexthop *nexthop; |
1964 | const struct nexthop *ctx_nexthop; | |
1965 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
1966 | ||
1967 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { | |
188a00e0 MS |
1968 | char buf[NEXTHOP_STRLEN]; |
1969 | ||
1970 | nexthop = nhlfe->nexthop; | |
1971 | if (!nexthop) | |
1972 | continue; | |
1973 | ||
c3753405 | 1974 | ctx_nhlfe = NULL; |
188a00e0 | 1975 | ctx_nexthop = NULL; |
c3753405 | 1976 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
188a00e0 MS |
1977 | ctx_nexthop = ctx_nhlfe->nexthop; |
1978 | if (!ctx_nexthop) | |
1979 | continue; | |
1980 | ||
1981 | if ((ctx_nexthop->type == nexthop->type) && | |
1982 | nexthop_same(ctx_nexthop, nexthop)) { | |
1983 | /* Matched */ | |
1984 | break; | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | if (is_debug) | |
1989 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1990 | ||
1991 | if (ctx_nhlfe && ctx_nexthop) { | |
1992 | ||
1993 | /* Bring zebra nhlfe install state into sync */ | |
1994 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1995 | NHLFE_FLAG_INSTALLED)) { | |
c3753405 MS |
1996 | if (is_debug) |
1997 | zlog_debug("%s: matched lsp nhlfe %s (installed)", | |
1998 | __func__, buf); | |
188a00e0 MS |
1999 | |
2000 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
00a9b150 | 2001 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 MS |
2002 | |
2003 | } else { | |
c3753405 MS |
2004 | if (is_debug) |
2005 | zlog_debug("%s: matched lsp nhlfe %s (not installed)", | |
2006 | __func__, buf); | |
188a00e0 | 2007 | |
104e3ad9 | 2008 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 2009 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 | 2010 | } |
104e3ad9 MS |
2011 | |
2012 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
2013 | NEXTHOP_FLAG_FIB)) { |
2014 | SET_FLAG(nhlfe->nexthop->flags, | |
2015 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2016 | SET_FLAG(nhlfe->nexthop->flags, |
2017 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2018 | } else { |
2019 | UNSET_FLAG(nhlfe->nexthop->flags, | |
2020 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2021 | UNSET_FLAG(nhlfe->nexthop->flags, |
2022 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2023 | } |
2024 | ||
104e3ad9 MS |
2025 | } else { |
2026 | /* Not mentioned in lfib set -> uninstalled */ | |
c3753405 MS |
2027 | if (is_debug) |
2028 | zlog_debug("%s: no match for lsp nhlfe %s", | |
2029 | __func__, buf); | |
104e3ad9 | 2030 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 2031 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
104e3ad9 | 2032 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
188a00e0 | 2033 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2034 | } |
2035 | } | |
2036 | ||
68110c42 MS |
2037 | return ret; |
2038 | } | |
2039 | ||
2040 | /* | |
2041 | * Process async dplane notifications. | |
2042 | */ | |
2043 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2044 | { | |
2045 | struct zebra_vrf *zvrf; | |
a7d2146a | 2046 | struct zebra_ile tmp_ile; |
68110c42 | 2047 | struct hash *lsp_table; |
8f74a383 | 2048 | struct zebra_lsp *lsp; |
68110c42 MS |
2049 | const struct nhlfe_list_head *ctx_list; |
2050 | int start_count = 0, end_count = 0; /* Installed counts */ | |
2051 | bool changed_p = false; | |
2052 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
8283551d | 2053 | enum zebra_sr_policy_update_label_mode update_mode; |
68110c42 MS |
2054 | |
2055 | if (is_debug) | |
2056 | zlog_debug("LSP dplane notif, in-label %u", | |
2057 | dplane_ctx_get_in_label(ctx)); | |
2058 | ||
2059 | /* Look for zebra LSP object */ | |
2060 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
2061 | if (zvrf == NULL) | |
f00b37e7 | 2062 | return; |
68110c42 MS |
2063 | |
2064 | lsp_table = zvrf->lsp_table; | |
2065 | ||
2066 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
2067 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2068 | if (lsp == NULL) { | |
2069 | if (is_debug) | |
2070 | zlog_debug("dplane LSP notif: in-label %u not found", | |
2071 | dplane_ctx_get_in_label(ctx)); | |
f00b37e7 | 2072 | return; |
68110c42 MS |
2073 | } |
2074 | ||
2075 | /* | |
2076 | * The dataplane/forwarding plane is notifying zebra about the state | |
2077 | * of the nexthops associated with this LSP. First, we take a | |
2078 | * pre-scan pass to determine whether the LSP has transitioned | |
2079 | * from installed -> uninstalled. In that case, we need to have | |
2080 | * the existing state of the LSP objects available before making | |
2081 | * any changes. | |
2082 | */ | |
2083 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2084 | ||
2085 | changed_p = compare_notif_nhlfes(ctx_list, &lsp->nhlfe_list, | |
2086 | &start_count, &end_count); | |
2087 | ||
2088 | if (is_debug) | |
2089 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2090 | start_count, end_count, | |
2091 | changed_p ? ", changed" : ""); | |
2092 | ||
2093 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2094 | ||
2095 | if (compare_notif_nhlfes(ctx_list, &lsp->backup_nhlfe_list, | |
2096 | &start_count, &end_count)) | |
2097 | /* Avoid accidentally setting back to 'false' */ | |
2098 | changed_p = true; | |
2099 | ||
2100 | if (is_debug) | |
2101 | zlog_debug("LSP dplane notif: lfib backups, start_count %d, end_count %d%s", | |
2102 | start_count, end_count, | |
2103 | changed_p ? ", changed" : ""); | |
2104 | ||
2105 | /* | |
2106 | * Has the LSP become uninstalled? We need the existing state of the | |
2107 | * nexthops/nhlfes at this point so we know what to delete. | |
2108 | */ | |
2109 | if (start_count > 0 && end_count == 0) { | |
2110 | /* Inform other lfibs */ | |
2111 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2112 | } | |
2113 | ||
2114 | /* | |
2115 | * Now we take a second pass and bring the zebra | |
2116 | * nexthop state into sync with the forwarding-plane state. | |
2117 | */ | |
2118 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2119 | update_nhlfes_from_ctx(&lsp->nhlfe_list, ctx_list); | |
2120 | ||
2121 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2122 | update_nhlfes_from_ctx(&lsp->backup_nhlfe_list, ctx_list); | |
2123 | ||
188a00e0 | 2124 | if (end_count > 0) { |
104e3ad9 | 2125 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 | 2126 | |
8283551d MS |
2127 | /* SR-TE update too */ |
2128 | if (start_count == 0) | |
2129 | update_mode = ZEBRA_SR_POLICY_LABEL_CREATED; | |
2130 | else | |
2131 | update_mode = ZEBRA_SR_POLICY_LABEL_UPDATED; | |
2132 | zebra_sr_policy_label_update(lsp->ile.in_label, update_mode); | |
2133 | ||
188a00e0 MS |
2134 | if (changed_p) |
2135 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2136 | ||
2137 | } else { | |
8283551d MS |
2138 | /* SR-TE update too */ |
2139 | zebra_sr_policy_label_update(lsp->ile.in_label, | |
2140 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
2141 | ||
104e3ad9 MS |
2142 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2143 | clear_nhlfe_installed(lsp); | |
2144 | } | |
104e3ad9 MS |
2145 | } |
2146 | ||
a64448ba DS |
2147 | /* |
2148 | * Install dynamic LSP entry. | |
2149 | */ | |
d62a17ae | 2150 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2151 | struct route_entry *re) | |
a64448ba | 2152 | { |
d62a17ae | 2153 | struct route_table *table; |
60e36561 | 2154 | struct zebra_fec *fec; |
a64448ba | 2155 | |
d62a17ae | 2156 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2157 | if (!table) | |
2158 | return -1; | |
a64448ba | 2159 | |
d62a17ae | 2160 | /* See if there is a configured label binding for this FEC. */ |
2161 | fec = fec_find(table, &rn->p); | |
2162 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2163 | return 0; | |
a64448ba | 2164 | |
d62a17ae | 2165 | /* We cannot install a label forwarding entry if local label is the |
2166 | * implicit-null label. | |
2167 | */ | |
70e98a7f | 2168 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2169 | return 0; |
a64448ba | 2170 | |
d62a17ae | 2171 | if (lsp_install(zvrf, fec->label, rn, re)) |
2172 | return -1; | |
a64448ba | 2173 | |
d62a17ae | 2174 | return 0; |
a64448ba DS |
2175 | } |
2176 | ||
2177 | /* | |
2178 | * Uninstall dynamic LSP entry, if any. | |
2179 | */ | |
d62a17ae | 2180 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2181 | struct route_entry *re) | |
a64448ba | 2182 | { |
d62a17ae | 2183 | struct route_table *table; |
60e36561 | 2184 | struct zebra_fec *fec; |
a64448ba | 2185 | |
d62a17ae | 2186 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2187 | if (!table) | |
2188 | return -1; | |
a64448ba | 2189 | |
d62a17ae | 2190 | /* See if there is a configured label binding for this FEC. */ |
2191 | fec = fec_find(table, &rn->p); | |
2192 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2193 | return 0; | |
a64448ba | 2194 | |
d62a17ae | 2195 | /* Uninstall always removes all dynamic NHLFEs. */ |
2196 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2197 | } |
2198 | ||
d4cb23d7 | 2199 | /* |
cd4bb96f MS |
2200 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2201 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 | 2202 | */ |
f2595bd5 | 2203 | struct zebra_nhlfe * |
8f74a383 | 2204 | zebra_mpls_lsp_add_nhlfe(struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
f2595bd5 DS |
2205 | enum nexthop_types_t gtype, const union g_addr *gate, |
2206 | ifindex_t ifindex, uint8_t num_labels, | |
2207 | const mpls_label_t *out_labels) | |
d4cb23d7 MS |
2208 | { |
2209 | /* Just a public pass-through to the internal implementation */ | |
5065db0a | 2210 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
cc1b9746 | 2211 | out_labels, false /*backup*/); |
d4cb23d7 MS |
2212 | } |
2213 | ||
cd4bb96f MS |
2214 | /* |
2215 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2216 | * This path only changes the LSP object - nothing is scheduled for | |
2217 | * processing, for example. | |
2218 | */ | |
f2595bd5 | 2219 | struct zebra_nhlfe *zebra_mpls_lsp_add_backup_nhlfe( |
8f74a383 DS |
2220 | struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
2221 | enum nexthop_types_t gtype, const union g_addr *gate, ifindex_t ifindex, | |
2222 | uint8_t num_labels, const mpls_label_t *out_labels) | |
cd4bb96f MS |
2223 | { |
2224 | /* Just a public pass-through to the internal implementation */ | |
cc1b9746 MS |
2225 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2226 | out_labels, true); | |
cd4bb96f MS |
2227 | } |
2228 | ||
2229 | /* | |
2230 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2231 | */ | |
8f74a383 | 2232 | struct zebra_nhlfe *zebra_mpls_lsp_add_nh(struct zebra_lsp *lsp, |
f2595bd5 DS |
2233 | enum lsp_types_t lsp_type, |
2234 | const struct nexthop *nh) | |
cd4bb96f | 2235 | { |
f2595bd5 | 2236 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
2237 | |
2238 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2239 | return NULL; | |
2240 | ||
2241 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
cc1b9746 MS |
2242 | nh->nh_label->num_labels, nh->nh_label->label, |
2243 | false /*backup*/); | |
cd4bb96f MS |
2244 | |
2245 | return nhlfe; | |
2246 | } | |
2247 | ||
2248 | /* | |
2249 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2250 | * return the newly-added object. | |
2251 | */ | |
8f74a383 | 2252 | struct zebra_nhlfe *zebra_mpls_lsp_add_backup_nh(struct zebra_lsp *lsp, |
f2595bd5 DS |
2253 | enum lsp_types_t lsp_type, |
2254 | const struct nexthop *nh) | |
cd4bb96f | 2255 | { |
f2595bd5 | 2256 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
2257 | |
2258 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2259 | return NULL; | |
2260 | ||
cc1b9746 | 2261 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, |
cd4bb96f | 2262 | nh->ifindex, nh->nh_label->num_labels, |
cc1b9746 | 2263 | nh->nh_label->label, true); |
cd4bb96f MS |
2264 | |
2265 | return nhlfe; | |
2266 | } | |
2267 | ||
d4cb23d7 MS |
2268 | /* |
2269 | * Free an allocated NHLFE | |
2270 | */ | |
f2595bd5 | 2271 | void zebra_mpls_nhlfe_free(struct zebra_nhlfe *nhlfe) |
d4cb23d7 MS |
2272 | { |
2273 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2274 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2275 | } |
2276 | ||
5aba114a DS |
2277 | /* |
2278 | * Registration from a client for the label binding for a FEC. If a binding | |
2279 | * already exists, it is informed to the client. | |
28d58fd7 | 2280 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2281 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2282 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2283 | * is acceptable. If no label index then just register the specified label. |
2284 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2285 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2286 | */ |
d62a17ae | 2287 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2288 | uint32_t label, uint32_t label_index, |
2289 | struct zserv *client) | |
d62a17ae | 2290 | { |
2291 | struct route_table *table; | |
60e36561 | 2292 | struct zebra_fec *fec; |
57592a53 AD |
2293 | bool new_client; |
2294 | bool label_change = false; | |
d7c0a89a | 2295 | uint32_t old_label; |
57592a53 AD |
2296 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2297 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2298 | |
2299 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2300 | if (!table) | |
2301 | return -1; | |
2302 | ||
57592a53 AD |
2303 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2304 | flog_err( | |
2305 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
b467b4b4 DS |
2306 | "Rejecting FEC register for %pFX with both label %u and Label Index %u specified, client %s", |
2307 | p, label, label_index, | |
57592a53 AD |
2308 | zebra_route_string(client->proto)); |
2309 | return -1; | |
2310 | } | |
2311 | ||
d62a17ae | 2312 | /* Locate FEC */ |
2313 | fec = fec_find(table, p); | |
2314 | if (!fec) { | |
57592a53 | 2315 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2316 | if (!fec) { |
af4c2728 | 2317 | flog_err( |
e914ccbe | 2318 | EC_ZEBRA_FEC_ADD_FAILED, |
b467b4b4 DS |
2319 | "Failed to add FEC %pFX upon register, client %s", |
2320 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2321 | return -1; |
2322 | } | |
2323 | ||
2324 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2325 | new_client = true; |
d62a17ae | 2326 | } else { |
57592a53 AD |
2327 | /* Check if the FEC has been statically defined in the config */ |
2328 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2329 | /* Client may register same FEC with different label index. */ |
2330 | new_client = | |
2331 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2332 | if (!new_client && fec->label_index == label_index |
2333 | && fec->label == label) | |
d62a17ae | 2334 | /* Duplicate register */ |
2335 | return 0; | |
2336 | ||
57592a53 | 2337 | /* Save current label, update the FEC */ |
d62a17ae | 2338 | old_label = fec->label; |
2339 | fec->label_index = label_index; | |
2340 | } | |
2341 | ||
2342 | if (new_client) | |
2343 | listnode_add(fec->client_list, client); | |
2344 | ||
2345 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2346 | zlog_debug("FEC %pFX label%s %u %s by client %s%s", p, |
57592a53 AD |
2347 | have_label_index ? " index" : "", |
2348 | have_label_index ? label_index : label, | |
2349 | new_client ? "registered" : "updated", | |
2350 | zebra_route_string(client->proto), | |
2351 | is_configured_fec | |
2352 | ? ", but using statically configured label" | |
2353 | : ""); | |
2354 | ||
2355 | /* If not a statically configured FEC, derive the local label | |
2356 | * from label index or use the provided label | |
d62a17ae | 2357 | */ |
57592a53 AD |
2358 | if (!is_configured_fec) { |
2359 | if (have_label_index) | |
2360 | fec_derive_label_from_index(zvrf, fec); | |
2361 | else | |
2362 | fec->label = label; | |
d62a17ae | 2363 | |
2364 | /* If no label change, exit. */ | |
2365 | if (fec->label == old_label) | |
2366 | return 0; | |
2367 | ||
57592a53 | 2368 | label_change = true; |
d62a17ae | 2369 | } |
2370 | ||
2371 | /* If new client or label change, update client and install or uninstall | |
2372 | * label forwarding entry as needed. | |
2373 | */ | |
2374 | /* Inform client of label, if needed. */ | |
2375 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2376 | if (IS_ZEBRA_DEBUG_MPLS) | |
2377 | zlog_debug("Update client label %u", fec->label); | |
2378 | fec_send(fec, client); | |
2379 | } | |
2380 | ||
2381 | if (new_client || label_change) | |
2382 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2383 | ||
2384 | return 0; | |
5aba114a DS |
2385 | } |
2386 | ||
2387 | /* | |
2388 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2389 | * itself is deleted if no other registered clients exist and there is no | |
2390 | * label bound to the FEC. | |
2391 | */ | |
d62a17ae | 2392 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2393 | struct zserv *client) | |
5aba114a | 2394 | { |
d62a17ae | 2395 | struct route_table *table; |
60e36561 | 2396 | struct zebra_fec *fec; |
5aba114a | 2397 | |
d62a17ae | 2398 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2399 | if (!table) | |
2400 | return -1; | |
5aba114a | 2401 | |
d62a17ae | 2402 | fec = fec_find(table, p); |
2403 | if (!fec) { | |
e914ccbe | 2404 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
2dbe669b DA |
2405 | "Failed to find FEC %pFX upon unregister, client %s", |
2406 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2407 | return -1; |
2408 | } | |
5aba114a | 2409 | |
d62a17ae | 2410 | listnode_delete(fec->client_list, client); |
2411 | ||
2412 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2413 | zlog_debug("FEC %pFX unregistered by client %s", p, |
d62a17ae | 2414 | zebra_route_string(client->proto)); |
2415 | ||
2416 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2417 | * deleting, see if any LSP needs to be uninstalled. | |
2418 | */ | |
2419 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2420 | && list_isempty(fec->client_list)) { | |
2421 | mpls_label_t old_label = fec->label; | |
2422 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2423 | fec_change_update_lsp(zvrf, fec, old_label); | |
2424 | fec_del(fec); | |
2425 | } | |
5aba114a | 2426 | |
d62a17ae | 2427 | return 0; |
5aba114a DS |
2428 | } |
2429 | ||
2430 | /* | |
2431 | * Cleanup any FECs registered by this client. | |
2432 | */ | |
453844ab | 2433 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2434 | { |
453844ab | 2435 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2436 | struct route_node *rn; |
60e36561 | 2437 | struct zebra_fec *fec; |
d62a17ae | 2438 | struct listnode *node; |
2439 | struct zserv *fec_client; | |
2440 | int af; | |
2441 | ||
2442 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2443 | if (zvrf->fec_table[af] == NULL) | |
2444 | continue; | |
2445 | ||
2446 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2447 | rn = route_next(rn)) { | |
2448 | fec = rn->info; | |
2449 | if (!fec || list_isempty(fec->client_list)) | |
2450 | continue; | |
2451 | ||
2452 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2453 | fec_client)) { | |
2454 | if (fec_client == client) { | |
2455 | listnode_delete(fec->client_list, | |
2456 | fec_client); | |
2457 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2458 | && list_isempty(fec->client_list)) | |
2459 | fec_del(fec); | |
2460 | break; | |
2461 | } | |
2462 | } | |
2463 | } | |
2464 | } | |
5aba114a | 2465 | |
d62a17ae | 2466 | return 0; |
5aba114a DS |
2467 | } |
2468 | ||
651105b5 RW |
2469 | struct lsp_uninstall_args { |
2470 | struct hash *lsp_table; | |
2471 | enum lsp_types_t type; | |
2472 | }; | |
2473 | ||
2474 | /* | |
2475 | * Cleanup MPLS labels registered by this client. | |
2476 | */ | |
2477 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2478 | { | |
2479 | struct vrf *vrf; | |
2480 | struct zebra_vrf *zvrf; | |
2481 | ||
2482 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2483 | struct lsp_uninstall_args args; | |
2484 | ||
2485 | zvrf = vrf->info; | |
2486 | if (!zvrf) | |
2487 | continue; | |
2488 | ||
2489 | /* Cleanup LSPs. */ | |
2490 | args.lsp_table = zvrf->lsp_table; | |
2491 | args.type = lsp_type_from_re_type(client->proto); | |
2492 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2493 | &args); | |
2494 | ||
2495 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2496 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2497 | lsp_type_from_re_type(client->proto)); | |
2498 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2499 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2500 | } |
2501 | ||
2502 | return 0; | |
2503 | } | |
2504 | ||
f31e084c DS |
2505 | /* |
2506 | * Return FEC (if any) to which this label is bound. | |
2507 | * Note: Only works for per-prefix binding and when the label is not | |
2508 | * implicit-null. | |
2509 | * TODO: Currently walks entire table, can optimize later with another | |
2510 | * hash.. | |
2511 | */ | |
60e36561 DS |
2512 | struct zebra_fec *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2513 | mpls_label_t label) | |
d62a17ae | 2514 | { |
2515 | struct route_node *rn; | |
60e36561 | 2516 | struct zebra_fec *fec; |
d62a17ae | 2517 | int af; |
2518 | ||
2519 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2520 | if (zvrf->fec_table[af] == NULL) | |
2521 | continue; | |
2522 | ||
2523 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2524 | rn = route_next(rn)) { | |
2525 | if (!rn->info) | |
2526 | continue; | |
2527 | fec = rn->info; | |
2528 | if (fec->label == label) | |
2529 | return fec; | |
2530 | } | |
2531 | } | |
f31e084c | 2532 | |
d62a17ae | 2533 | return NULL; |
f31e084c DS |
2534 | } |
2535 | ||
2536 | /* | |
2537 | * Inform if specified label is currently bound to a FEC or not. | |
2538 | */ | |
d62a17ae | 2539 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2540 | { |
d62a17ae | 2541 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2542 | } |
2543 | ||
2544 | /* | |
5aba114a | 2545 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2546 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2547 | * label forwarding entry. | |
9d303b37 | 2548 | */ |
d62a17ae | 2549 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2550 | mpls_label_t in_label) | |
2551 | { | |
2552 | struct route_table *table; | |
60e36561 | 2553 | struct zebra_fec *fec; |
d62a17ae | 2554 | mpls_label_t old_label; |
2555 | int ret = 0; | |
2556 | ||
2557 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2558 | if (!table) | |
2559 | return -1; | |
2560 | ||
d62a17ae | 2561 | /* Update existing FEC or create a new one. */ |
2562 | fec = fec_find(table, p); | |
2563 | if (!fec) { | |
2564 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2565 | MPLS_INVALID_LABEL_INDEX); | |
2566 | if (!fec) { | |
e914ccbe | 2567 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
2dbe669b | 2568 | "Failed to add FEC %pFX upon config", p); |
d62a17ae | 2569 | return -1; |
2570 | } | |
2571 | ||
2572 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2573 | zlog_debug("Add fec %pFX label %u", p, in_label); |
d62a17ae | 2574 | } else { |
2575 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2576 | if (fec->label == in_label) | |
2577 | /* Duplicate config */ | |
2578 | return 0; | |
2579 | ||
2580 | /* Label change, update clients. */ | |
2581 | old_label = fec->label; | |
2582 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2583 | zlog_debug("Update fec %pFX new label %u", p, in_label); |
d62a17ae | 2584 | |
2585 | fec->label = in_label; | |
2586 | fec_update_clients(fec); | |
2587 | ||
2588 | /* Update label forwarding entries appropriately */ | |
2589 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2590 | } | |
2591 | ||
2592 | return ret; | |
f31e084c DS |
2593 | } |
2594 | ||
2595 | /* | |
5aba114a DS |
2596 | * Remove static FEC to label binding. If there are no clients registered |
2597 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2598 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2599 | * client may need to be updated with derived label. | |
f31e084c | 2600 | */ |
d62a17ae | 2601 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2602 | { | |
2603 | struct route_table *table; | |
60e36561 | 2604 | struct zebra_fec *fec; |
d62a17ae | 2605 | mpls_label_t old_label; |
d62a17ae | 2606 | |
2607 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2608 | if (!table) | |
2609 | return -1; | |
2610 | ||
2611 | fec = fec_find(table, p); | |
2612 | if (!fec) { | |
e914ccbe | 2613 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
b467b4b4 | 2614 | "Failed to find FEC %pFX upon delete", p); |
d62a17ae | 2615 | return -1; |
2616 | } | |
2617 | ||
2618 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2dbe669b | 2619 | zlog_debug("Delete fec %pFX label %u label index %u", p, |
57592a53 | 2620 | fec->label, fec->label_index); |
d62a17ae | 2621 | } |
2622 | ||
2623 | old_label = fec->label; | |
2624 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2625 | fec->label = MPLS_INVALID_LABEL; | |
2626 | ||
2627 | /* If no client exists, just delete the FEC. */ | |
2628 | if (list_isempty(fec->client_list)) { | |
2629 | fec_del(fec); | |
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | /* Derive the local label (from label index) or reset it. */ | |
2634 | fec_derive_label_from_index(zvrf, fec); | |
2635 | ||
2636 | /* If there is a label change, update clients. */ | |
2637 | if (fec->label == old_label) | |
2638 | return 0; | |
2639 | fec_update_clients(fec); | |
2640 | ||
2641 | /* Update label forwarding entries appropriately */ | |
2642 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2643 | } |
2644 | ||
2645 | /* | |
2646 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2647 | */ | |
d62a17ae | 2648 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2649 | { |
d62a17ae | 2650 | struct route_node *rn; |
2651 | int af; | |
60e36561 | 2652 | struct zebra_fec *fec; |
d62a17ae | 2653 | int write = 0; |
f31e084c | 2654 | |
d62a17ae | 2655 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2656 | if (zvrf->fec_table[af] == NULL) | |
2657 | continue; | |
f31e084c | 2658 | |
d62a17ae | 2659 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2660 | rn = route_next(rn)) { | |
2661 | if (!rn->info) | |
2662 | continue; | |
f31e084c | 2663 | |
d62a17ae | 2664 | char lstr[BUFSIZ]; |
2665 | fec = rn->info; | |
f31e084c | 2666 | |
d62a17ae | 2667 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2668 | continue; | |
f31e084c | 2669 | |
d62a17ae | 2670 | write = 1; |
2dbe669b | 2671 | vty_out(vty, "mpls label bind %pFX %s\n", &rn->p, |
d62a17ae | 2672 | label2str(fec->label, lstr, BUFSIZ)); |
2673 | } | |
2674 | } | |
f31e084c | 2675 | |
d62a17ae | 2676 | return write; |
f31e084c DS |
2677 | } |
2678 | ||
2679 | /* | |
2680 | * Display MPLS FEC to label binding (VTY command handler). | |
2681 | */ | |
d62a17ae | 2682 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2683 | { |
d62a17ae | 2684 | struct route_node *rn; |
2685 | int af; | |
f31e084c | 2686 | |
d62a17ae | 2687 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2688 | if (zvrf->fec_table[af] == NULL) | |
2689 | continue; | |
f31e084c | 2690 | |
d62a17ae | 2691 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2692 | rn = route_next(rn)) { | |
2693 | if (!rn->info) | |
2694 | continue; | |
2695 | fec_print(rn->info, vty); | |
2696 | } | |
2697 | } | |
f31e084c DS |
2698 | } |
2699 | ||
2700 | /* | |
2701 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2702 | */ | |
d62a17ae | 2703 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2704 | struct prefix *p) | |
f31e084c | 2705 | { |
d62a17ae | 2706 | struct route_table *table; |
2707 | struct route_node *rn; | |
f31e084c | 2708 | |
d62a17ae | 2709 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2710 | if (!table) | |
2711 | return; | |
f31e084c | 2712 | |
d62a17ae | 2713 | apply_mask(p); |
2714 | rn = route_node_lookup(table, p); | |
2715 | if (!rn) | |
2716 | return; | |
f31e084c | 2717 | |
d62a17ae | 2718 | route_unlock_node(rn); |
2719 | if (!rn->info) | |
2720 | return; | |
f31e084c | 2721 | |
d62a17ae | 2722 | fec_print(rn->info, vty); |
f31e084c DS |
2723 | } |
2724 | ||
f2e7f4eb MS |
2725 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2726 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2727 | { |
2728 | struct nhg_hash_entry *nhe; | |
2729 | ||
f2e7f4eb | 2730 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2731 | |
5463ce26 | 2732 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2733 | } |
2734 | ||
f2e7f4eb MS |
2735 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2736 | enum lsp_types_t type, | |
2737 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2738 | { |
f2e7f4eb MS |
2739 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2740 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2741 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2742 | nexthop_del_labels(nexthop); |
2743 | else | |
2744 | return false; | |
2745 | ||
2746 | return true; | |
2747 | } | |
2748 | ||
53216dff DS |
2749 | void zebra_mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2750 | struct prefix *prefix, uint8_t route_type, | |
2751 | uint8_t route_instance) | |
d62a17ae | 2752 | { |
2753 | struct route_table *table; | |
2754 | struct route_node *rn; | |
2755 | struct route_entry *re; | |
2756 | struct nexthop *nexthop; | |
f2e7f4eb | 2757 | struct nhg_hash_entry *new_nhe; |
da137142 | 2758 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2759 | |
2760 | /* Lookup table. */ | |
da137142 | 2761 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2762 | if (!table) |
1548fbbc | 2763 | return; |
d62a17ae | 2764 | |
2765 | /* Lookup existing route */ | |
2766 | rn = route_node_get(table, prefix); | |
a2addae8 | 2767 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2768 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2769 | continue; | |
e132dea0 | 2770 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2771 | break; |
88d88a9c | 2772 | } |
d62a17ae | 2773 | if (re == NULL) |
1548fbbc | 2774 | return; |
d62a17ae | 2775 | |
da137142 | 2776 | /* |
f2e7f4eb MS |
2777 | * Nexthops are now shared by multiple routes, so we have to make |
2778 | * a local copy, modify the copy, then update the route. | |
da137142 | 2779 | */ |
f2e7f4eb | 2780 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2781 | |
f2e7f4eb MS |
2782 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2783 | nexthop_del_labels(nexthop); | |
2784 | ||
2785 | /* Update backup routes/nexthops also, if present. */ | |
2786 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2787 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2788 | nexthop = nexthop->next) | |
2789 | nexthop_del_labels(nexthop); | |
2790 | } | |
2791 | ||
2792 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2793 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2794 | ||
68110c42 MS |
2795 | /* This will create (or ref) a new nhe, so we will discard the local |
2796 | * temporary nhe | |
2797 | */ | |
f2e7f4eb MS |
2798 | mpls_zebra_nhe_update(re, afi, new_nhe); |
2799 | ||
2800 | zebra_nhg_free(new_nhe); | |
2801 | ||
2802 | rib_queue_add(rn); | |
f2e7f4eb MS |
2803 | } |
2804 | ||
2805 | /* | |
2806 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2807 | * update its labels according to 'add_p', and return 'true' if successful. | |
2808 | */ | |
2809 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2810 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2811 | { | |
2812 | bool found = false, success = false; | |
2813 | struct nexthop *nexthop; | |
2814 | ||
2815 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2816 | switch (nexthop->type) { |
2817 | case NEXTHOP_TYPE_IPV4: | |
2818 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2819 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2820 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2821 | continue; |
f2e7f4eb MS |
2822 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2823 | &znh->gate.ipv4)) | |
d62a17ae | 2824 | continue; |
2825 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2826 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2827 | continue; |
f2e7f4eb | 2828 | |
8f77d0ee | 2829 | found = true; |
f2e7f4eb MS |
2830 | |
2831 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2832 | break; | |
2833 | ||
2834 | success = true; | |
8f77d0ee | 2835 | break; |
d62a17ae | 2836 | case NEXTHOP_TYPE_IPV6: |
2837 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2838 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2839 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2840 | continue; |
f2e7f4eb MS |
2841 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2842 | &znh->gate.ipv6)) | |
d62a17ae | 2843 | continue; |
2844 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2845 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2846 | continue; |
f2e7f4eb | 2847 | |
8f77d0ee | 2848 | found = true; |
f2e7f4eb MS |
2849 | |
2850 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2851 | break; | |
2852 | success = true; | |
8f77d0ee | 2853 | break; |
10cc80ca | 2854 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
2855 | if (znh->type != NEXTHOP_TYPE_IFINDEX) |
2856 | continue; | |
2857 | if (nexthop->ifindex != znh->ifindex) | |
2858 | continue; | |
2859 | ||
2860 | found = true; | |
2861 | ||
2862 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2863 | break; | |
2864 | success = true; | |
d62a17ae | 2865 | break; |
a44e3106 MS |
2866 | case NEXTHOP_TYPE_BLACKHOLE: |
2867 | /* Not valid */ | |
2868 | continue; | |
d62a17ae | 2869 | } |
f2e7f4eb MS |
2870 | |
2871 | if (found) | |
2872 | break; | |
d62a17ae | 2873 | } |
d62a17ae | 2874 | |
f2e7f4eb MS |
2875 | return success; |
2876 | } | |
19474c9c | 2877 | |
f2e7f4eb MS |
2878 | /* |
2879 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2880 | * using zapi message info. | |
2881 | * There are several changes that need to be made, in several zebra | |
2882 | * data structures, so we want to do all the work required at once. | |
2883 | */ | |
53216dff DS |
2884 | void zebra_mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, |
2885 | const struct zapi_labels *zl) | |
f2e7f4eb MS |
2886 | { |
2887 | int i, counter, ret = 0; | |
2dbe669b | 2888 | char buf[NEXTHOP_STRLEN]; |
f2e7f4eb MS |
2889 | const struct zapi_nexthop *znh; |
2890 | struct route_table *table; | |
2891 | struct route_node *rn = NULL; | |
2892 | struct route_entry *re = NULL; | |
2893 | struct nhg_hash_entry *new_nhe = NULL; | |
2894 | bool found; | |
2895 | afi_t afi = AFI_IP; | |
2896 | const struct prefix *prefix = NULL; | |
2897 | struct hash *lsp_table; | |
a7d2146a | 2898 | struct zebra_ile tmp_ile; |
8f74a383 | 2899 | struct zebra_lsp *lsp = NULL; |
19474c9c | 2900 | |
f2e7f4eb MS |
2901 | /* Prep LSP for add case */ |
2902 | if (add_p) { | |
2903 | /* Lookup table. */ | |
2904 | lsp_table = zvrf->lsp_table; | |
2905 | if (!lsp_table) | |
1548fbbc | 2906 | return; |
f2e7f4eb MS |
2907 | |
2908 | /* Find or create LSP object */ | |
2909 | tmp_ile.in_label = zl->local_label; | |
2910 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
da137142 SW |
2911 | } |
2912 | ||
f2e7f4eb MS |
2913 | /* Prep for route/FEC update if requested */ |
2914 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2915 | prefix = &zl->route.prefix; | |
da137142 | 2916 | |
f2e7f4eb | 2917 | afi = family2afi(prefix->family); |
ce549947 | 2918 | |
f2e7f4eb MS |
2919 | /* Lookup table. */ |
2920 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2921 | if (table) { | |
2922 | /* Lookup existing route */ | |
2923 | rn = route_node_get(table, prefix); | |
2924 | RNODE_FOREACH_RE(rn, re) { | |
2925 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2926 | continue; | |
2927 | if (re->type == zl->route.type && | |
2928 | re->instance == zl->route.instance) | |
2929 | break; | |
2930 | } | |
2931 | } | |
ea6b290b | 2932 | |
f2e7f4eb MS |
2933 | if (re) { |
2934 | /* | |
2935 | * Copy over current nexthops into a temporary group. | |
2936 | * We can't just change the values here since the nhgs | |
2937 | * are shared and if the labels change, we'll need | |
2938 | * to find or create a new nhg. We need to create | |
2939 | * a whole temporary group, make changes to it, | |
2940 | * then attach that to the route. | |
2941 | */ | |
2942 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2943 | |
f2e7f4eb MS |
2944 | } else { |
2945 | /* | |
2946 | * The old version of the zapi code | |
2947 | * attempted to manage LSPs before trying to | |
2948 | * find a route/FEC, so we'll continue that way. | |
2949 | */ | |
2dbe669b DA |
2950 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) |
2951 | zlog_debug( | |
2952 | "%s: FTN update requested: no route for prefix %pFX", | |
2953 | __func__, prefix); | |
f2e7f4eb MS |
2954 | } |
2955 | } | |
2956 | ||
2957 | /* | |
2958 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2959 | */ | |
2960 | ||
2961 | counter = 0; | |
2962 | for (i = 0; i < zl->nexthop_num; i++) { | |
2963 | ||
2964 | znh = &zl->nexthops[i]; | |
2965 | ||
2966 | /* Attempt LSP update */ | |
2967 | if (add_p) | |
2968 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2969 | else | |
2970 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2971 | zl->local_label, znh->type, | |
cc1b9746 MS |
2972 | &znh->gate, znh->ifindex, |
2973 | false); | |
f2e7f4eb MS |
2974 | if (ret < 0) { |
2975 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2976 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2977 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
2978 | __func__, (add_p ? "" : "un"), | |
2979 | zl->local_label, buf); | |
2980 | } | |
ea6b290b | 2981 | continue; |
f2e7f4eb MS |
2982 | } |
2983 | ||
2984 | /* Attempt route/FEC update if requested */ | |
2985 | if (re == NULL) | |
2986 | continue; | |
2987 | ||
2988 | /* Search the route's nexthops for a match, and update it. */ | |
2989 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
2990 | znh); | |
2991 | if (found) { | |
2992 | counter++; | |
2993 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
2994 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
2995 | zlog_debug( |
2996 | "%s: Unable to update FEC: prefix %pFX, label %u, znh %s", | |
2997 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb | 2998 | } |
ea6b290b | 2999 | } |
ea6b290b | 3000 | |
f2e7f4eb MS |
3001 | /* |
3002 | * Process backup LSPs/nexthop entries also. We associate backup | |
3003 | * LSP info with backup nexthops. | |
3004 | */ | |
3005 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
3006 | goto znh_done; | |
19474c9c | 3007 | |
f2e7f4eb | 3008 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 3009 | |
f2e7f4eb | 3010 | znh = &zl->backup_nexthops[i]; |
19474c9c | 3011 | |
f2e7f4eb MS |
3012 | if (add_p) |
3013 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
3014 | else | |
cc1b9746 MS |
3015 | ret = mpls_lsp_uninstall(zvrf, zl->type, |
3016 | zl->local_label, | |
3017 | znh->type, &znh->gate, | |
3018 | znh->ifindex, true); | |
f2e7f4eb MS |
3019 | |
3020 | if (ret < 0) { | |
3021 | if (IS_ZEBRA_DEBUG_RECV || | |
3022 | IS_ZEBRA_DEBUG_MPLS) { | |
3023 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3024 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
3025 | __func__, (add_p ? "" : "un"), | |
3026 | zl->local_label, buf); | |
3027 | } | |
3028 | continue; | |
3029 | } | |
19474c9c | 3030 | |
f2e7f4eb MS |
3031 | /* Attempt backup nexthop/FEC update if requested */ |
3032 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
3033 | continue; | |
19474c9c | 3034 | |
f2e7f4eb MS |
3035 | /* Search the route's backup nexthops for a match |
3036 | * and update it. | |
3037 | */ | |
3038 | found = ftn_update_znh(add_p, zl->type, | |
3039 | new_nhe->backup_info->nhe->nhg.nexthop, | |
3040 | znh); | |
3041 | if (found) { | |
3042 | counter++; | |
3043 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3044 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3045 | zlog_debug( |
3046 | "%s: Unable to update backup FEC: prefix %pFX, label %u, znh %s", | |
3047 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb MS |
3048 | } |
3049 | } | |
ea6b290b | 3050 | |
f2e7f4eb MS |
3051 | znh_done: |
3052 | ||
3053 | /* | |
3054 | * If we made changes, update the route, and schedule it | |
3055 | * for rib processing | |
3056 | */ | |
3057 | if (re != NULL && counter > 0) { | |
3058 | assert(rn != NULL); | |
3059 | ||
3060 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3061 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3062 | ||
3063 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3064 | ||
3065 | rib_queue_add(rn); | |
3066 | } | |
3067 | ||
3068 | if (new_nhe) | |
3069 | zebra_nhg_free(new_nhe); | |
ea6b290b RW |
3070 | } |
3071 | ||
ce549947 RW |
3072 | /* |
3073 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3074 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3075 | * the out-label for an existing NHLFE (update case). | |
3076 | */ | |
f2595bd5 | 3077 | static struct zebra_nhlfe * |
8f74a383 DS |
3078 | lsp_add_nhlfe(struct zebra_lsp *lsp, enum lsp_types_t type, |
3079 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3080 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3081 | ifindex_t ifindex, bool is_backup) | |
d62a17ae | 3082 | { |
f2595bd5 | 3083 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3084 | char buf[MPLS_LABEL_STRLEN]; |
cc1b9746 | 3085 | const char *backup_str; |
e4a1ec74 | 3086 | |
cc1b9746 MS |
3087 | if (is_backup) { |
3088 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3089 | gate, ifindex); | |
3090 | backup_str = "backup "; | |
d62a17ae | 3091 | } else { |
cc1b9746 MS |
3092 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, |
3093 | ifindex); | |
3094 | backup_str = ""; | |
d62a17ae | 3095 | } |
3096 | ||
cd4bb96f MS |
3097 | if (nhlfe) { |
3098 | struct nexthop *nh = nhlfe->nexthop; | |
3099 | ||
3100 | assert(nh); | |
3101 | assert(nh->nh_label); | |
3102 | ||
3103 | /* Clear deleted flag (in case it was set) */ | |
3104 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3105 | if (nh->nh_label->num_labels == num_out_labels | |
3106 | && !memcmp(nh->nh_label->label, out_labels, | |
3107 | sizeof(mpls_label_t) * num_out_labels)) | |
3108 | /* No change */ | |
3109 | return nhlfe; | |
3110 | ||
3111 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3112 | char buf2[MPLS_LABEL_STRLEN]; | |
3113 | char buf3[MPLS_LABEL_STRLEN]; | |
3114 | ||
3115 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3116 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3117 | sizeof(buf2), 0); | |
3118 | mpls_label2str(nh->nh_label->num_labels, | |
3119 | nh->nh_label->label, buf3, sizeof(buf3), | |
3120 | 0); | |
3121 | ||
cc1b9746 MS |
3122 | zlog_debug("LSP in-label %u type %d %snexthop %s out-label(s) changed to %s (old %s)", |
3123 | lsp->ile.in_label, type, backup_str, buf, | |
3124 | buf2, buf3); | |
cd4bb96f MS |
3125 | } |
3126 | ||
3127 | /* Update out label(s), trigger processing. */ | |
3128 | if (nh->nh_label->num_labels == num_out_labels) | |
3129 | memcpy(nh->nh_label->label, out_labels, | |
3130 | sizeof(mpls_label_t) * num_out_labels); | |
3131 | else { | |
3132 | nexthop_del_labels(nh); | |
3133 | nexthop_add_labels(nh, type, num_out_labels, | |
3134 | out_labels); | |
3135 | } | |
3136 | } else { | |
3137 | /* Add LSP entry to this nexthop */ | |
cc1b9746 MS |
3138 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3139 | num_out_labels, out_labels, is_backup); | |
cd4bb96f MS |
3140 | if (!nhlfe) |
3141 | return NULL; | |
3142 | ||
3143 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3144 | char buf2[MPLS_LABEL_STRLEN]; | |
3145 | ||
3146 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3147 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3148 | sizeof(buf2), 0); | |
3149 | ||
cc1b9746 MS |
3150 | zlog_debug("Add LSP in-label %u type %d %snexthop %s out-label(s) %s", |
3151 | lsp->ile.in_label, type, backup_str, buf, | |
3152 | buf2); | |
cd4bb96f MS |
3153 | } |
3154 | ||
3155 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3156 | } | |
3157 | ||
3158 | /* Mark NHLFE, queue LSP for processing. */ | |
3159 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3160 | ||
3161 | return nhlfe; | |
3162 | } | |
3163 | ||
3164 | /* | |
3165 | * Install an LSP and forwarding entry; used primarily | |
301a687a | 3166 | * from vrf zapi message processing. |
cd4bb96f MS |
3167 | */ |
3168 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3169 | mpls_label_t in_label, uint8_t num_out_labels, | |
3170 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3171 | const union g_addr *gate, ifindex_t ifindex) | |
3172 | { | |
3173 | struct hash *lsp_table; | |
a7d2146a | 3174 | struct zebra_ile tmp_ile; |
8f74a383 | 3175 | struct zebra_lsp *lsp; |
f2595bd5 | 3176 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
3177 | |
3178 | /* Lookup table. */ | |
3179 | lsp_table = zvrf->lsp_table; | |
3180 | if (!lsp_table) | |
3181 | return -1; | |
3182 | ||
3183 | /* Find or create LSP object */ | |
3184 | tmp_ile.in_label = in_label; | |
3185 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
cd4bb96f MS |
3186 | |
3187 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
cc1b9746 | 3188 | gate, ifindex, false /*backup*/); |
cd4bb96f MS |
3189 | if (nhlfe == NULL) |
3190 | return -1; | |
3191 | ||
3192 | /* Queue LSP for processing. */ | |
3193 | if (lsp_processq_add(lsp)) | |
3194 | return -1; | |
3195 | ||
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | /* | |
3200 | * Install or replace NHLFE, using info from zapi nexthop | |
3201 | */ | |
8f74a383 | 3202 | static int lsp_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 3203 | const struct zapi_nexthop *znh) |
cd4bb96f | 3204 | { |
f2595bd5 | 3205 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3206 | |
cd4bb96f | 3207 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
cc1b9746 MS |
3208 | znh->type, &znh->gate, znh->ifindex, |
3209 | false /*backup*/); | |
cd4bb96f MS |
3210 | if (nhlfe == NULL) |
3211 | return -1; | |
3212 | ||
3213 | /* Update backup info if present */ | |
3214 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3215 | if (znh->backup_num > NEXTHOP_MAX_BACKUPS) { |
3216 | nhlfe_del(nhlfe); | |
3217 | return -1; | |
3218 | } | |
3219 | ||
3220 | nhlfe->nexthop->backup_num = znh->backup_num; | |
3221 | memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx, | |
3222 | znh->backup_num); | |
cd4bb96f | 3223 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); |
301a687a MS |
3224 | } else { |
3225 | /* Ensure there's no stale backup info */ | |
3226 | UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3227 | nhlfe->nexthop->backup_num = 0; | |
cd4bb96f MS |
3228 | } |
3229 | ||
3230 | /* Queue LSP for processing. */ | |
3231 | if (lsp_processq_add(lsp)) | |
3232 | return -1; | |
3233 | ||
3234 | return 0; | |
3235 | } | |
3236 | ||
3237 | /* | |
3238 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3239 | */ | |
8f74a383 | 3240 | static int lsp_backup_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 3241 | const struct zapi_nexthop *znh) |
cd4bb96f | 3242 | { |
f2595bd5 | 3243 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3244 | |
cc1b9746 MS |
3245 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, |
3246 | znh->labels, znh->type, &znh->gate, | |
3247 | znh->ifindex, true /*backup*/); | |
cd4bb96f MS |
3248 | if (nhlfe == NULL) { |
3249 | if (IS_ZEBRA_DEBUG_MPLS) | |
3250 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3251 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3252 | return -1; |
3253 | } | |
3254 | ||
3255 | /* Queue LSP for processing. */ | |
d62a17ae | 3256 | if (lsp_processq_add(lsp)) |
3257 | return -1; | |
3258 | ||
3259 | return 0; | |
ce549947 RW |
3260 | } |
3261 | ||
8f74a383 | 3262 | struct zebra_lsp *mpls_lsp_find(struct zebra_vrf *zvrf, mpls_label_t in_label) |
31f937fb SM |
3263 | { |
3264 | struct hash *lsp_table; | |
a7d2146a | 3265 | struct zebra_ile tmp_ile; |
31f937fb SM |
3266 | |
3267 | /* Lookup table. */ | |
3268 | lsp_table = zvrf->lsp_table; | |
3269 | if (!lsp_table) | |
3270 | return NULL; | |
3271 | ||
3272 | /* If entry is not present, exit. */ | |
3273 | tmp_ile.in_label = in_label; | |
3274 | return hash_lookup(lsp_table, &tmp_ile); | |
3275 | } | |
3276 | ||
ce549947 RW |
3277 | /* |
3278 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3279 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3280 | */ | |
d62a17ae | 3281 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3282 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
cc1b9746 MS |
3283 | const union g_addr *gate, ifindex_t ifindex, |
3284 | bool backup_p) | |
d62a17ae | 3285 | { |
3286 | struct hash *lsp_table; | |
a7d2146a | 3287 | struct zebra_ile tmp_ile; |
8f74a383 | 3288 | struct zebra_lsp *lsp; |
f2595bd5 | 3289 | struct zebra_nhlfe *nhlfe; |
cc1b9746 | 3290 | char buf[NEXTHOP_STRLEN]; |
4a2a5236 | 3291 | bool schedule_lsp = false; |
d62a17ae | 3292 | |
3293 | /* Lookup table. */ | |
3294 | lsp_table = zvrf->lsp_table; | |
3295 | if (!lsp_table) | |
3296 | return -1; | |
3297 | ||
3298 | /* If entry is not present, exit. */ | |
3299 | tmp_ile.in_label = in_label; | |
3300 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3301 | if (!lsp) | |
3302 | return 0; | |
cc1b9746 MS |
3303 | |
3304 | if (backup_p) | |
3305 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3306 | gate, ifindex); | |
3307 | else | |
3308 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, | |
3309 | ifindex); | |
d62a17ae | 3310 | if (!nhlfe) |
3311 | return 0; | |
3312 | ||
3313 | if (IS_ZEBRA_DEBUG_MPLS) { | |
43a9f66c | 3314 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3315 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", |
3316 | in_label, type, buf, nhlfe->flags); | |
3317 | } | |
3318 | ||
4a2a5236 MS |
3319 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) || |
3320 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) | |
3321 | schedule_lsp = true; | |
3322 | ||
d62a17ae | 3323 | /* Mark NHLFE for delete or directly delete, as appropriate. */ |
4a2a5236 | 3324 | if (schedule_lsp) { |
d62a17ae | 3325 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); |
4a2a5236 MS |
3326 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); |
3327 | ||
3328 | if (IS_ZEBRA_DEBUG_MPLS) | |
3329 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
3330 | lsp->ile.in_label, lsp->flags); | |
d62a17ae | 3331 | if (lsp_processq_add(lsp)) |
3332 | return -1; | |
3333 | } else { | |
3334 | nhlfe_del(nhlfe); | |
3335 | ||
3336 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3337 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3338 | } |
3339 | return 0; | |
ce549947 RW |
3340 | } |
3341 | ||
ea6b290b RW |
3342 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3343 | mpls_label_t in_label) | |
3344 | { | |
3345 | struct hash *lsp_table; | |
a7d2146a | 3346 | struct zebra_ile tmp_ile; |
8f74a383 | 3347 | struct zebra_lsp *lsp; |
ea6b290b RW |
3348 | |
3349 | /* Lookup table. */ | |
3350 | lsp_table = zvrf->lsp_table; | |
3351 | if (!lsp_table) | |
3352 | return -1; | |
3353 | ||
3354 | /* If entry is not present, exit. */ | |
3355 | tmp_ile.in_label = in_label; | |
3356 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3357 | if (!lsp) | |
3358 | return 0; | |
3359 | ||
3360 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3361 | } | |
3362 | ||
ce549947 | 3363 | /* |
651105b5 | 3364 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3365 | * If no other NHLFEs exist, the entry would be deleted. |
3366 | */ | |
651105b5 | 3367 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3368 | { |
651105b5 | 3369 | struct lsp_uninstall_args *args = ctxt; |
8f74a383 | 3370 | struct zebra_lsp *lsp; |
d62a17ae | 3371 | struct hash *lsp_table; |
ce549947 | 3372 | |
8f74a383 | 3373 | lsp = (struct zebra_lsp *)bucket->data; |
ee70f629 | 3374 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3375 | return; |
ce549947 | 3376 | |
651105b5 | 3377 | lsp_table = args->lsp_table; |
d62a17ae | 3378 | if (!lsp_table) |
3379 | return; | |
ce549947 | 3380 | |
651105b5 | 3381 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3382 | } |
3383 | ||
3384 | /* | |
651105b5 RW |
3385 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3386 | * LSP type. | |
ce549947 | 3387 | */ |
651105b5 RW |
3388 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3389 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3390 | { |
3391 | struct route_table *table; | |
3392 | struct route_node *rn; | |
3393 | struct route_entry *re; | |
3394 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3395 | struct nexthop_group *nhg; |
3396 | bool update; | |
d62a17ae | 3397 | |
3398 | /* Process routes of interested address-families. */ | |
3399 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3400 | if (!table) | |
3401 | return; | |
3402 | ||
3403 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3404 | update = false; |
3405 | ||
a2addae8 | 3406 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3407 | struct nhg_hash_entry *new_nhe; |
da137142 | 3408 | |
f2e7f4eb | 3409 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3410 | |
f2e7f4eb MS |
3411 | nhg = &new_nhe->nhg; |
3412 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3413 | nexthop = nexthop->next) { |
651105b5 | 3414 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3415 | continue; |
3416 | ||
d62a17ae | 3417 | nexthop_del_labels(nexthop); |
3418 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3419 | SET_FLAG(re->status, | |
332ad713 | 3420 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3421 | update = true; |
3422 | } | |
3423 | ||
3424 | /* Check for backup info and update that also */ | |
3425 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3426 | if (nhg != NULL) { | |
3427 | for (nexthop = nhg->nexthop; nexthop; | |
3428 | nexthop = nexthop->next) { | |
3429 | if (nexthop->nh_label_type != lsp_type) | |
3430 | continue; | |
3431 | ||
3432 | nexthop_del_labels(nexthop); | |
3433 | SET_FLAG(re->status, | |
3434 | ROUTE_ENTRY_CHANGED); | |
3435 | SET_FLAG(re->status, | |
3436 | ROUTE_ENTRY_LABELS_CHANGED); | |
3437 | update = true; | |
3438 | } | |
d62a17ae | 3439 | } |
da137142 | 3440 | |
19474c9c | 3441 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3442 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3443 | |
f2e7f4eb | 3444 | zebra_nhg_free(new_nhe); |
407c87a6 | 3445 | } |
d62a17ae | 3446 | |
3447 | if (update) | |
3448 | rib_queue_add(rn); | |
3449 | } | |
ce549947 RW |
3450 | } |
3451 | ||
1c1cf002 | 3452 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3453 | /* |
3454 | * Check that the label values used in LSP creation are consistent. The | |
3455 | * main criteria is that if there is ECMP, the label operation must still | |
3456 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3457 | * to current HW restrictions. | |
3458 | */ | |
d62a17ae | 3459 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3460 | mpls_label_t in_label, | |
3461 | mpls_label_t out_label, | |
3462 | enum nexthop_types_t gtype, | |
3463 | union g_addr *gate, ifindex_t ifindex) | |
3464 | { | |
3465 | struct hash *slsp_table; | |
a7d2146a | 3466 | struct zebra_ile tmp_ile; |
8f74a383 | 3467 | struct zebra_lsp *lsp; |
f2595bd5 | 3468 | struct zebra_nhlfe *nhlfe; |
608a57c0 | 3469 | const struct nexthop *nh; |
d62a17ae | 3470 | |
3471 | /* Lookup table. */ | |
3472 | slsp_table = zvrf->slsp_table; | |
3473 | if (!slsp_table) | |
3474 | return 0; | |
3475 | ||
3476 | /* If entry is not present, exit. */ | |
3477 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3478 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3479 | if (!lsp) | |
d62a17ae | 3480 | return 1; |
3481 | ||
608a57c0 MS |
3482 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3483 | gtype, gate, ifindex); | |
3484 | if (nhlfe) { | |
3485 | nh = nhlfe->nexthop; | |
3486 | ||
3487 | if (nh == NULL || nh->nh_label == NULL) | |
3488 | return 0; | |
3489 | ||
3490 | if (nh->nh_label->label[0] == out_label) | |
d62a17ae | 3491 | return 1; |
3492 | ||
3493 | /* If not only NHLFE, cannot allow label change. */ | |
608a57c0 MS |
3494 | if (nhlfe != nhlfe_list_first(&lsp->nhlfe_list) || |
3495 | nhlfe_list_next(&lsp->nhlfe_list, nhlfe) != NULL) | |
d62a17ae | 3496 | return 0; |
3497 | } else { | |
3498 | /* If other NHLFEs exist, label operation must match. */ | |
608a57c0 MS |
3499 | nhlfe = nhlfe_list_first(&lsp->nhlfe_list); |
3500 | if (nhlfe != NULL) { | |
d62a17ae | 3501 | int cur_op, new_op; |
3502 | ||
608a57c0 MS |
3503 | nh = nhlfe->nexthop; |
3504 | ||
3505 | if (nh == NULL || nh->nh_label == NULL) | |
3506 | return 0; | |
3507 | ||
3508 | cur_op = (nh->nh_label->label[0] == | |
ee70f629 | 3509 | MPLS_LABEL_IMPLICIT_NULL); |
70e98a7f | 3510 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3511 | if (cur_op != new_op) |
3512 | return 0; | |
3513 | } | |
3514 | } | |
3515 | ||
3516 | /* Label values are good. */ | |
3517 | return 1; | |
7758e3f3 | 3518 | } |
1c1cf002 | 3519 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3520 | |
3521 | /* | |
3522 | * Add static LSP entry. This may be the first entry for this incoming label | |
3523 | * or an additional nexthop; an existing entry may also have outgoing label | |
3524 | * changed. | |
3525 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3526 | * NHLFEs). | |
3527 | */ | |
d62a17ae | 3528 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3529 | mpls_label_t out_label, | |
3530 | enum nexthop_types_t gtype, union g_addr *gate, | |
3531 | ifindex_t ifindex) | |
3532 | { | |
3533 | struct hash *slsp_table; | |
a7d2146a | 3534 | struct zebra_ile tmp_ile; |
8f74a383 | 3535 | struct zebra_lsp *lsp; |
f2595bd5 | 3536 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 3537 | char buf[BUFSIZ]; |
3538 | ||
3539 | /* Lookup table. */ | |
3540 | slsp_table = zvrf->slsp_table; | |
3541 | if (!slsp_table) | |
3542 | return -1; | |
3543 | ||
e4a1ec74 | 3544 | /* Find or create LSP. */ |
d62a17ae | 3545 | tmp_ile.in_label = in_label; |
608a57c0 | 3546 | lsp = hash_get(slsp_table, &tmp_ile, lsp_alloc); |
e4a1ec74 | 3547 | |
608a57c0 MS |
3548 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, gtype, gate, |
3549 | ifindex); | |
3550 | if (nhlfe) { | |
3551 | struct nexthop *nh = nhlfe->nexthop; | |
3552 | ||
3553 | assert(nh); | |
3554 | assert(nh->nh_label); | |
3555 | ||
3556 | /* Compare existing nexthop */ | |
3557 | if (nh->nh_label->num_labels == 1 && | |
3558 | nh->nh_label->label[0] == out_label) | |
d62a17ae | 3559 | /* No change */ |
3560 | return 0; | |
3561 | ||
3562 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3563 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3564 | zlog_debug( |
3efd0893 | 3565 | "Upd static LSP in-label %u nexthop %s out-label %u (old %u)", |
608a57c0 MS |
3566 | in_label, buf, out_label, |
3567 | nh->nh_label->label[0]); | |
3568 | } | |
3569 | if (nh->nh_label->num_labels == 1) | |
3570 | nh->nh_label->label[0] = out_label; | |
3571 | else { | |
3572 | nexthop_del_labels(nh); | |
3573 | nexthop_add_labels(nh, ZEBRA_LSP_STATIC, 1, &out_label); | |
d62a17ae | 3574 | } |
608a57c0 | 3575 | |
d62a17ae | 3576 | } else { |
3577 | /* Add static LSP entry to this nexthop */ | |
608a57c0 MS |
3578 | nhlfe = nhlfe_add(lsp, ZEBRA_LSP_STATIC, gtype, gate, |
3579 | ifindex, 1, &out_label, false /*backup*/); | |
3580 | if (!nhlfe) | |
d62a17ae | 3581 | return -1; |
3582 | ||
3583 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3584 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3585 | zlog_debug( |
3586 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3587 | in_label, buf, out_label); | |
3588 | } | |
3589 | } | |
3590 | ||
3591 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3592 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3593 | gtype, gate, ifindex)) | |
d62a17ae | 3594 | return -1; |
3595 | ||
3596 | return 0; | |
7758e3f3 | 3597 | } |
3598 | ||
3599 | /* | |
3600 | * Delete static LSP entry. This may be the delete of one particular | |
3601 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3602 | * all NHLFEs). | |
3603 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3604 | * LSP configuration. | |
3605 | */ | |
d62a17ae | 3606 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3607 | enum nexthop_types_t gtype, union g_addr *gate, | |
3608 | ifindex_t ifindex) | |
3609 | { | |
3610 | struct hash *slsp_table; | |
a7d2146a | 3611 | struct zebra_ile tmp_ile; |
8f74a383 | 3612 | struct zebra_lsp *lsp; |
f2595bd5 | 3613 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 3614 | |
3615 | /* Lookup table. */ | |
3616 | slsp_table = zvrf->slsp_table; | |
3617 | if (!slsp_table) | |
3618 | return -1; | |
3619 | ||
3620 | /* If entry is not present, exit. */ | |
3621 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3622 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3623 | if (!lsp) | |
d62a17ae | 3624 | return 0; |
3625 | ||
3626 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3627 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3628 | if (IS_ZEBRA_DEBUG_MPLS) | |
3629 | zlog_debug("Del static LSP in-label %u", in_label); | |
3630 | ||
3631 | /* Uninstall entire LSP from the main table. */ | |
3632 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3633 | ||
3634 | /* Delete all static NHLFEs */ | |
608a57c0 MS |
3635 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3636 | nhlfe_del(nhlfe); | |
3637 | } | |
d62a17ae | 3638 | } else { |
3639 | /* Find specific NHLFE, exit if not found. */ | |
608a57c0 MS |
3640 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3641 | gtype, gate, ifindex); | |
3642 | if (!nhlfe) | |
d62a17ae | 3643 | return 0; |
3644 | ||
3645 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3646 | char buf[BUFSIZ]; | |
608a57c0 | 3647 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3648 | zlog_debug("Del static LSP in-label %u nexthop %s", |
3649 | in_label, buf); | |
3650 | } | |
3651 | ||
3652 | /* Uninstall LSP from the main table. */ | |
3653 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
cc1b9746 | 3654 | gate, ifindex, false); |
d62a17ae | 3655 | |
3656 | /* Delete static LSP NHLFE */ | |
608a57c0 | 3657 | nhlfe_del(nhlfe); |
d62a17ae | 3658 | } |
3659 | ||
3660 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
608a57c0 MS |
3661 | * above. |
3662 | */ | |
3663 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) { | |
3664 | lsp = hash_release(slsp_table, &tmp_ile); | |
1cf42d6a | 3665 | lsp_free_nhlfe(lsp); |
608a57c0 | 3666 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 3667 | } |
3668 | ||
3669 | return 0; | |
7758e3f3 | 3670 | } |
3671 | ||
40c7bdb0 | 3672 | /* |
3673 | * Schedule all MPLS label forwarding entries for processing. | |
3674 | * Called upon changes that may affect one or more of them such as | |
3675 | * interface or nexthop state changes. | |
3676 | */ | |
d62a17ae | 3677 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3678 | { |
d62a17ae | 3679 | if (!zvrf) |
3680 | return; | |
3681 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3682 | } |
3683 | ||
3ab18ff2 | 3684 | /* |
3685 | * Display MPLS label forwarding table for a specific LSP | |
3686 | * (VTY command handler). | |
3687 | */ | |
d62a17ae | 3688 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3689 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3690 | { |
d62a17ae | 3691 | struct hash *lsp_table; |
8f74a383 | 3692 | struct zebra_lsp *lsp; |
a7d2146a | 3693 | struct zebra_ile tmp_ile; |
d62a17ae | 3694 | json_object *json = NULL; |
3ab18ff2 | 3695 | |
d62a17ae | 3696 | /* Lookup table. */ |
3697 | lsp_table = zvrf->lsp_table; | |
3698 | if (!lsp_table) | |
3699 | return; | |
3ab18ff2 | 3700 | |
d62a17ae | 3701 | /* If entry is not present, exit. */ |
3702 | tmp_ile.in_label = label; | |
3703 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3704 | if (!lsp) | |
3705 | return; | |
3ab18ff2 | 3706 | |
d62a17ae | 3707 | if (use_json) { |
3708 | json = lsp_json(lsp); | |
962af8a8 | 3709 | vty_json(vty, json); |
d62a17ae | 3710 | } else |
a29c2887 | 3711 | lsp_print(vty, lsp); |
3ab18ff2 | 3712 | } |
3713 | ||
3714 | /* | |
3715 | * Display MPLS label forwarding table (VTY command handler). | |
3716 | */ | |
d62a17ae | 3717 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3718 | bool use_json) |
d62a17ae | 3719 | { |
3720 | char buf[BUFSIZ]; | |
3721 | json_object *json = NULL; | |
8f74a383 | 3722 | struct zebra_lsp *lsp = NULL; |
f2595bd5 | 3723 | struct zebra_nhlfe *nhlfe = NULL; |
d62a17ae | 3724 | struct listnode *node = NULL; |
3725 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3726 | ||
3727 | if (use_json) { | |
3728 | json = json_object_new_object(); | |
3729 | ||
3730 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3731 | json_object_object_add( | |
43a9f66c MS |
3732 | json, label2str(lsp->ile.in_label, buf, |
3733 | sizeof(buf)), | |
d62a17ae | 3734 | lsp_json(lsp)); |
3735 | ||
962af8a8 | 3736 | vty_json(vty, json); |
d62a17ae | 3737 | } else { |
a971aeb6 RW |
3738 | struct ttable *tt; |
3739 | ||
3740 | /* Prepare table. */ | |
3741 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3742 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3743 | tt->style.cell.rpad = 2; | |
3744 | tt->style.corner = '+'; | |
3745 | ttable_restyle(tt); | |
3746 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3747 | |
3748 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3749 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3750 | struct nexthop *nexthop; |
3751 | const char *out_label_str; | |
3752 | char nh_buf[NEXTHOP_STRLEN]; | |
3753 | ||
d62a17ae | 3754 | nexthop = nhlfe->nexthop; |
3755 | ||
3756 | switch (nexthop->type) { | |
996c9314 | 3757 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3758 | struct zebra_ns *zns; |
b9abd9ad DS |
3759 | struct interface *ifp; |
3760 | ||
86f07f44 PG |
3761 | zns = zebra_ns_lookup(NS_DEFAULT); |
3762 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3763 | zns, nexthop->ifindex); |
3764 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3765 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3766 | break; |
3767 | } | |
d62a17ae | 3768 | case NEXTHOP_TYPE_IPV4: |
3769 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3770 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3771 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3772 | break; |
3773 | case NEXTHOP_TYPE_IPV6: | |
3774 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3775 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3776 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3777 | break; |
10cc80ca | 3778 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 3779 | break; |
3780 | } | |
3781 | ||
b9abd9ad | 3782 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3783 | out_label_str = mpls_label2str( |
3784 | nexthop->nh_label->num_labels, | |
3785 | &nexthop->nh_label->label[0], | |
43a9f66c | 3786 | buf, sizeof(buf), 1); |
b9abd9ad | 3787 | else |
a971aeb6 RW |
3788 | out_label_str = "-"; |
3789 | ||
3790 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3791 | lsp->ile.in_label, | |
3792 | nhlfe_type2str(nhlfe->type), | |
3793 | nh_buf, out_label_str); | |
d62a17ae | 3794 | } |
3795 | } | |
3796 | ||
a971aeb6 RW |
3797 | /* Dump the generated table. */ |
3798 | if (tt->nrows > 1) { | |
3799 | char *table = ttable_dump(tt, "\n"); | |
3800 | vty_out(vty, "%s\n", table); | |
3801 | XFREE(MTYPE_TMP, table); | |
3802 | } | |
3803 | ttable_del(tt); | |
d62a17ae | 3804 | } |
3805 | ||
6a154c88 | 3806 | list_delete(&lsp_list); |
3ab18ff2 | 3807 | } |
3808 | ||
608a57c0 MS |
3809 | /* |
3810 | * Create printable string for static LSP configuration. | |
3811 | */ | |
f2595bd5 DS |
3812 | static char *nhlfe_config_str(const struct zebra_nhlfe *nhlfe, char *buf, |
3813 | int size) | |
608a57c0 MS |
3814 | { |
3815 | const struct nexthop *nh; | |
3816 | ||
3817 | nh = nhlfe->nexthop; | |
3818 | ||
3819 | buf[0] = '\0'; | |
3820 | switch (nh->type) { | |
3821 | case NEXTHOP_TYPE_IPV4: | |
10cc80ca | 3822 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
608a57c0 | 3823 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, size); |
10cc80ca DS |
3824 | if (nh->ifindex) |
3825 | strlcat(buf, ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3826 | size); | |
608a57c0 MS |
3827 | break; |
3828 | case NEXTHOP_TYPE_IPV6: | |
3829 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3830 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, size); | |
3831 | if (nh->ifindex) | |
3832 | strlcat(buf, | |
3833 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3834 | size); | |
3835 | break; | |
10cc80ca | 3836 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
3837 | if (nh->ifindex) |
3838 | strlcat(buf, | |
3839 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3840 | size); | |
3841 | break; | |
3842 | case NEXTHOP_TYPE_BLACKHOLE: | |
608a57c0 MS |
3843 | break; |
3844 | } | |
3845 | ||
3846 | return buf; | |
3847 | } | |
3848 | ||
7758e3f3 | 3849 | /* |
3850 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3851 | */ | |
d62a17ae | 3852 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3853 | { | |
8f74a383 | 3854 | struct zebra_lsp *lsp; |
f2595bd5 | 3855 | struct zebra_nhlfe *nhlfe; |
608a57c0 | 3856 | struct nexthop *nh; |
d62a17ae | 3857 | struct listnode *node; |
3858 | struct list *slsp_list = | |
608a57c0 | 3859 | hash_get_sorted_list(zvrf->slsp_table, lsp_cmp); |
d62a17ae | 3860 | |
608a57c0 MS |
3861 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, lsp)) { |
3862 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
0af35d90 | 3863 | char buf[BUFSIZ]; |
d62a17ae | 3864 | char lstr[30]; |
3865 | ||
608a57c0 MS |
3866 | nh = nhlfe->nexthop; |
3867 | if (nh == NULL || nh->nh_label == NULL) | |
3868 | continue; | |
3869 | ||
3870 | nhlfe_config_str(nhlfe, buf, sizeof(buf)); | |
3871 | ||
3872 | switch (nh->nh_label->label[0]) { | |
70e98a7f DS |
3873 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3874 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3875 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3876 | break; | |
70e98a7f | 3877 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3878 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3879 | break; | |
3880 | default: | |
772270f3 | 3881 | snprintf(lstr, sizeof(lstr), "%u", |
608a57c0 | 3882 | nh->nh_label->label[0]); |
d62a17ae | 3883 | break; |
3884 | } | |
3885 | ||
608a57c0 | 3886 | vty_out(vty, "mpls lsp %u %s %s\n", lsp->ile.in_label, |
d62a17ae | 3887 | buf, lstr); |
3888 | } | |
3889 | } | |
b78b820d | 3890 | |
6a154c88 | 3891 | list_delete(&slsp_list); |
d62a17ae | 3892 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3893 | } |
3894 | ||
1b6d5c7e VV |
3895 | /* |
3896 | * Add/update global label block. | |
3897 | */ | |
d7c0a89a QY |
3898 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3899 | uint32_t end_label) | |
1b6d5c7e | 3900 | { |
d62a17ae | 3901 | zvrf->mpls_srgb.start_label = start_label; |
3902 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3903 | |
d62a17ae | 3904 | /* Evaluate registered FECs to see if any get a label or not. */ |
3905 | fec_evaluate(zvrf); | |
3906 | return 0; | |
1b6d5c7e VV |
3907 | } |
3908 | ||
3909 | /* | |
3910 | * Delete global label block. | |
3911 | */ | |
d62a17ae | 3912 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3913 | { |
d62a17ae | 3914 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3915 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3916 | |
d62a17ae | 3917 | /* Process registered FECs to clear their local label, if needed. */ |
3918 | fec_evaluate(zvrf); | |
3919 | return 0; | |
1b6d5c7e VV |
3920 | } |
3921 | ||
3922 | /* | |
3923 | * Display MPLS global label block configuration (VTY command handler). | |
3924 | */ | |
d62a17ae | 3925 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3926 | { |
d62a17ae | 3927 | if (zvrf->mpls_srgb.start_label == 0) |
3928 | return 0; | |
1b6d5c7e | 3929 | |
d62a17ae | 3930 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3931 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3932 | vty_out(vty, "mpls label global-block %u %u\n", | |
3933 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3934 | } | |
1b6d5c7e | 3935 | |
d62a17ae | 3936 | return 1; |
1b6d5c7e VV |
3937 | } |
3938 | ||
84915b0a | 3939 | /* |
3940 | * Called when VRF becomes inactive, cleans up information but keeps | |
3941 | * the table itself. | |
84915b0a | 3942 | */ |
3943 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3944 | { | |
c2e10644 MS |
3945 | struct zebra_vrf *def_zvrf; |
3946 | afi_t afi; | |
3947 | ||
3948 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3949 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3950 | else { | |
3951 | /* | |
3952 | * For other vrfs, we try to remove associated LSPs; we locate | |
3953 | * the LSPs in the default vrf. | |
3954 | */ | |
3955 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3956 | ||
3957 | /* At shutdown, the default may be gone already */ | |
3958 | if (def_zvrf == NULL) | |
3959 | return; | |
3960 | ||
3961 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3962 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3963 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3964 | } | |
3965 | } | |
84915b0a | 3966 | } |
3967 | ||
06302ecb DS |
3968 | /* |
3969 | * When a vrf label is assigned and the client goes away | |
3970 | * we should cleanup the vrf labels associated with | |
3971 | * that zclient. | |
3972 | */ | |
3973 | void zebra_mpls_client_cleanup_vrf_label(uint8_t proto) | |
3974 | { | |
3975 | struct vrf *vrf; | |
3976 | struct zebra_vrf *def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3977 | ||
3978 | if (def_zvrf == NULL) | |
3979 | return; | |
3980 | ||
3981 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
3982 | struct zebra_vrf *zvrf = vrf->info; | |
3983 | afi_t afi; | |
3984 | ||
3985 | if (!zvrf) | |
3986 | continue; | |
3987 | ||
3988 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3989 | if (zvrf->label_proto[afi] == proto | |
3990 | && zvrf->label[afi] != MPLS_LABEL_NONE) | |
3991 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3992 | ||
3993 | /* | |
3994 | * Cleanup data structures by fiat | |
3995 | */ | |
3996 | zvrf->label_proto[afi] = 0; | |
3997 | zvrf->label[afi] = MPLS_LABEL_NONE; | |
3998 | } | |
3999 | } | |
4000 | } | |
4001 | ||
912b6a5b DA |
4002 | static void lsp_table_free(void *p) |
4003 | { | |
4004 | struct zebra_lsp *lsp = p; | |
4005 | ||
1cf42d6a DS |
4006 | lsp_free_nhlfe(lsp); |
4007 | ||
912b6a5b DA |
4008 | XFREE(MTYPE_LSP, lsp); |
4009 | } | |
4010 | ||
40c7bdb0 | 4011 | /* |
4012 | * Called upon process exiting, need to delete LSP forwarding | |
4013 | * entries from the kernel. | |
4014 | * NOTE: Currently supported only for default VRF. | |
4015 | */ | |
d62a17ae | 4016 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 4017 | { |
d62a17ae | 4018 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
912b6a5b | 4019 | hash_clean(zvrf->lsp_table, lsp_table_free); |
d62a17ae | 4020 | hash_free(zvrf->lsp_table); |
912b6a5b | 4021 | hash_clean(zvrf->slsp_table, lsp_table_free); |
d62a17ae | 4022 | hash_free(zvrf->slsp_table); |
9b67b514 DS |
4023 | route_table_finish(zvrf->fec_table[AFI_IP]); |
4024 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 4025 | } |
4026 | ||
7758e3f3 | 4027 | /* |
4028 | * Allocate MPLS tables for this VRF and do other initialization. | |
4029 | * NOTE: Currently supported only for default VRF. | |
4030 | */ | |
d62a17ae | 4031 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 4032 | { |
4a73887e DS |
4033 | char buffer[80]; |
4034 | ||
d62a17ae | 4035 | if (!zvrf) |
4036 | return; | |
4a73887e DS |
4037 | |
4038 | snprintf(buffer, sizeof(buffer), "ZEBRA SLSP table: %s", | |
4039 | zvrf->vrf->name); | |
e2071325 | 4040 | zvrf->slsp_table = hash_create_size(8, label_hash, label_cmp, buffer); |
4a73887e DS |
4041 | |
4042 | snprintf(buffer, sizeof(buffer), "ZEBRA LSP table: %s", | |
4043 | zvrf->vrf->name); | |
4044 | zvrf->lsp_table = hash_create_size(8, label_hash, label_cmp, buffer); | |
d62a17ae | 4045 | zvrf->fec_table[AFI_IP] = route_table_init(); |
4046 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
4047 | zvrf->mpls_flags = 0; | |
4048 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
4049 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 4050 | } |
4051 | ||
c87f5c23 DS |
4052 | void zebra_mpls_turned_on(void) |
4053 | { | |
4054 | if (!mpls_enabled) { | |
4055 | mpls_processq_init(); | |
4056 | mpls_enabled = true; | |
4057 | } | |
4058 | ||
4059 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); | |
4060 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); | |
4061 | } | |
4062 | ||
7758e3f3 | 4063 | /* |
4064 | * Global MPLS initialization. | |
4065 | */ | |
d62a17ae | 4066 | void zebra_mpls_init(void) |
7758e3f3 | 4067 | { |
c87f5c23 | 4068 | mpls_enabled = false; |
6fb35808 | 4069 | mpls_pw_reach_strict = false; |
33c32282 | 4070 | |
d62a17ae | 4071 | if (mpls_kernel_init() < 0) { |
e914ccbe | 4072 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 4073 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 4074 | return; |
4075 | } | |
fe6c7157 | 4076 | |
c87f5c23 | 4077 | zebra_mpls_turned_on(); |
7758e3f3 | 4078 | } |