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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 | |
fe6c7157 | 56 | int 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); | |
191 | if (!lsp) | |
192 | return -1; | |
193 | ||
194 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
195 | * recursive nexthops right now, because intermediate hops won't | |
196 | * understand | |
197 | * the label advertised by the recursive nexthop (plus we don't have the | |
198 | * logic yet to push multiple labels). | |
199 | */ | |
c415d895 | 200 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 201 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 202 | /* Skip inactive and recursive entries. */ |
203 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
204 | continue; | |
205 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
206 | continue; | |
207 | ||
ee70f629 MS |
208 | nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type, |
209 | nexthop->type, &nexthop->gate, | |
d62a17ae | 210 | nexthop->ifindex); |
211 | if (nhlfe) { | |
212 | /* Clear deleted flag (in case it was set) */ | |
213 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
214 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
215 | /* No change */ | |
216 | continue; | |
217 | ||
218 | ||
219 | if (IS_ZEBRA_DEBUG_MPLS) { | |
220 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
221 | zlog_debug( | |
3efd0893 | 222 | "LSP in-label %u type %d nexthop %s out-label changed", |
d62a17ae | 223 | lsp->ile.in_label, lsp_type, buf); |
224 | } | |
225 | ||
226 | /* Update out label, trigger processing. */ | |
227 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
228 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
229 | changed++; | |
230 | } else { | |
231 | /* Add LSP entry to this nexthop */ | |
232 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
233 | &nexthop->gate, nexthop->ifindex, | |
5065db0a | 234 | nexthop->nh_label->num_labels, |
cc1b9746 MS |
235 | nexthop->nh_label->label, |
236 | false /*backup*/); | |
d62a17ae | 237 | if (!nhlfe) |
238 | return -1; | |
239 | ||
240 | if (IS_ZEBRA_DEBUG_MPLS) { | |
241 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
242 | zlog_debug( | |
3efd0893 | 243 | "Add LSP in-label %u type %d nexthop %s out-label %u", |
d62a17ae | 244 | lsp->ile.in_label, lsp_type, buf, |
245 | nexthop->nh_label->label[0]); | |
246 | } | |
247 | ||
248 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
249 | ||
250 | /* Mark NHLFE as changed. */ | |
251 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
252 | added++; | |
253 | } | |
254 | } | |
255 | ||
256 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
257 | * case), delete the LSP entry; this case results in somewhat ugly | |
258 | * logging. | |
259 | */ | |
260 | if (added || changed) { | |
261 | if (lsp_processq_add(lsp)) | |
262 | return -1; | |
1323491d MS |
263 | } else { |
264 | lsp_check_free(lsp_table, &lsp); | |
265 | } | |
d62a17ae | 266 | |
267 | return 0; | |
a64448ba DS |
268 | } |
269 | ||
270 | /* | |
271 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
272 | * NHLFEs are removed, the entire entry is deleted. | |
273 | */ | |
d62a17ae | 274 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
275 | { | |
276 | struct hash *lsp_table; | |
a7d2146a | 277 | struct zebra_ile tmp_ile; |
8f74a383 | 278 | struct zebra_lsp *lsp; |
f2595bd5 | 279 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 280 | char buf[BUFSIZ]; |
281 | ||
282 | /* Lookup table. */ | |
283 | lsp_table = zvrf->lsp_table; | |
284 | if (!lsp_table) | |
285 | return -1; | |
286 | ||
287 | /* If entry is not present, exit. */ | |
288 | tmp_ile.in_label = label; | |
289 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 290 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 291 | return 0; |
292 | ||
293 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 294 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 295 | |
296 | /* Skip static NHLFEs */ | |
297 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
298 | continue; | |
299 | ||
300 | if (IS_ZEBRA_DEBUG_MPLS) { | |
301 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
302 | zlog_debug( | |
303 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
304 | label, nhlfe->type, buf, nhlfe->flags); | |
305 | } | |
306 | ||
307 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
308 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
309 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
310 | } else { | |
311 | nhlfe_del(nhlfe); | |
312 | } | |
313 | } | |
314 | ||
315 | /* Queue LSP for processing, if needed, else delete. */ | |
316 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
317 | if (lsp_processq_add(lsp)) | |
318 | return -1; | |
1323491d MS |
319 | } else { |
320 | lsp_check_free(lsp_table, &lsp); | |
321 | } | |
d62a17ae | 322 | |
323 | return 0; | |
a64448ba DS |
324 | } |
325 | ||
28d58fd7 VV |
326 | /* |
327 | * This function is invoked upon change to label block configuration; it | |
328 | * will walk all registered FECs with label-index and appropriately update | |
329 | * their local labels and trigger client updates. | |
330 | */ | |
d62a17ae | 331 | static void fec_evaluate(struct zebra_vrf *zvrf) |
332 | { | |
333 | struct route_node *rn; | |
60e36561 | 334 | struct zebra_fec *fec; |
d7c0a89a | 335 | uint32_t old_label, new_label; |
d62a17ae | 336 | int af; |
d62a17ae | 337 | |
338 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
339 | if (zvrf->fec_table[af] == NULL) | |
340 | continue; | |
341 | ||
342 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
343 | rn = route_next(rn)) { | |
344 | if ((fec = rn->info) == NULL) | |
345 | continue; | |
346 | ||
347 | /* Skip configured FECs and those without a label index. | |
348 | */ | |
349 | if (fec->flags & FEC_FLAG_CONFIGURED | |
350 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
351 | continue; | |
352 | ||
d62a17ae | 353 | /* Save old label, determine new label. */ |
354 | old_label = fec->label; | |
355 | new_label = | |
356 | zvrf->mpls_srgb.start_label + fec->label_index; | |
357 | if (new_label >= zvrf->mpls_srgb.end_label) | |
358 | new_label = MPLS_INVALID_LABEL; | |
359 | ||
360 | /* If label has changed, update FEC and clients. */ | |
361 | if (new_label == old_label) | |
362 | continue; | |
363 | ||
364 | if (IS_ZEBRA_DEBUG_MPLS) | |
365 | zlog_debug( | |
b467b4b4 DS |
366 | "Update fec %pRN new label %u upon label block", |
367 | rn, new_label); | |
d62a17ae | 368 | |
369 | fec->label = new_label; | |
370 | fec_update_clients(fec); | |
371 | ||
372 | /* Update label forwarding entries appropriately */ | |
373 | fec_change_update_lsp(zvrf, fec, old_label); | |
374 | } | |
375 | } | |
28d58fd7 VV |
376 | } |
377 | ||
378 | /* | |
379 | * Derive (if possible) and update the local label for the FEC based on | |
380 | * its label index. The index is "acceptable" if it falls within the | |
381 | * globally configured label block (SRGB). | |
382 | */ | |
d7c0a89a | 383 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
60e36561 | 384 | struct zebra_fec *fec) |
28d58fd7 | 385 | { |
d7c0a89a | 386 | uint32_t label; |
28d58fd7 | 387 | |
d62a17ae | 388 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
389 | && zvrf->mpls_srgb.start_label | |
390 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
391 | < zvrf->mpls_srgb.end_label)) | |
392 | fec->label = label; | |
393 | else | |
394 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 395 | |
d62a17ae | 396 | return fec->label; |
28d58fd7 VV |
397 | } |
398 | ||
a64448ba DS |
399 | /* |
400 | * There is a change for this FEC. Install or uninstall label forwarding | |
401 | * entries, as appropriate. | |
402 | */ | |
60e36561 | 403 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, struct zebra_fec *fec, |
d62a17ae | 404 | mpls_label_t old_label) |
a64448ba | 405 | { |
d62a17ae | 406 | struct route_table *table; |
407 | struct route_node *rn; | |
408 | struct route_entry *re; | |
409 | afi_t afi; | |
a64448ba | 410 | |
d62a17ae | 411 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
412 | if (old_label != MPLS_INVALID_LABEL |
413 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 414 | lsp_uninstall(zvrf, old_label); |
a64448ba | 415 | |
d62a17ae | 416 | /* Install label forwarding entry corr. to new label, if needed. */ |
417 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 418 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 419 | return 0; |
a64448ba | 420 | |
d62a17ae | 421 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
422 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
423 | if (!table) | |
424 | return 0; | |
a64448ba | 425 | |
d62a17ae | 426 | /* See if labeled route exists. */ |
427 | rn = route_node_lookup(table, &fec->rn->p); | |
428 | if (!rn) | |
429 | return 0; | |
a64448ba | 430 | |
a2addae8 | 431 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 432 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
433 | break; | |
434 | } | |
a64448ba | 435 | |
d62a17ae | 436 | if (!re || !zebra_rib_labeled_unicast(re)) |
437 | return 0; | |
a64448ba | 438 | |
d62a17ae | 439 | if (lsp_install(zvrf, fec->label, rn, re)) |
440 | return -1; | |
a64448ba | 441 | |
d62a17ae | 442 | return 0; |
a64448ba DS |
443 | } |
444 | ||
5aba114a DS |
445 | /* |
446 | * Inform about FEC to a registered client. | |
447 | */ | |
60e36561 | 448 | static int fec_send(struct zebra_fec *fec, struct zserv *client) |
5aba114a | 449 | { |
d62a17ae | 450 | struct stream *s; |
451 | struct route_node *rn; | |
5aba114a | 452 | |
d62a17ae | 453 | rn = fec->rn; |
5aba114a | 454 | |
d62a17ae | 455 | /* Get output stream. */ |
1002497a | 456 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 457 | |
7cf15b25 | 458 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 459 | |
d62a17ae | 460 | stream_putw(s, rn->p.family); |
461 | stream_put_prefix(s, &rn->p); | |
462 | stream_putl(s, fec->label); | |
463 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 464 | return zserv_send_message(client, s); |
5aba114a DS |
465 | } |
466 | ||
467 | /* | |
468 | * Update all registered clients about this FEC. Caller should've updated | |
469 | * FEC and ensure no duplicate updates. | |
470 | */ | |
60e36561 | 471 | static void fec_update_clients(struct zebra_fec *fec) |
5aba114a | 472 | { |
d62a17ae | 473 | struct listnode *node; |
474 | struct zserv *client; | |
5aba114a | 475 | |
d62a17ae | 476 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
477 | if (IS_ZEBRA_DEBUG_MPLS) | |
478 | zlog_debug("Update client %s", | |
479 | zebra_route_string(client->proto)); | |
480 | fec_send(fec, client); | |
481 | } | |
5aba114a DS |
482 | } |
483 | ||
484 | ||
f31e084c DS |
485 | /* |
486 | * Print a FEC-label binding entry. | |
487 | */ | |
60e36561 | 488 | static void fec_print(struct zebra_fec *fec, struct vty *vty) |
d62a17ae | 489 | { |
490 | struct route_node *rn; | |
491 | struct listnode *node; | |
492 | struct zserv *client; | |
493 | char buf[BUFSIZ]; | |
494 | ||
495 | rn = fec->rn; | |
b467b4b4 | 496 | vty_out(vty, "%pRN\n", rn); |
d62a17ae | 497 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); |
498 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
499 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
500 | vty_out(vty, "\n"); | |
501 | if (!list_isempty(fec->client_list)) { | |
502 | vty_out(vty, " Client list:"); | |
503 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
504 | vty_out(vty, " %s(fd %d)", | |
505 | zebra_route_string(client->proto), | |
506 | client->sock); | |
507 | vty_out(vty, "\n"); | |
508 | } | |
f31e084c DS |
509 | } |
510 | ||
511 | /* | |
512 | * Locate FEC-label binding that matches with passed info. | |
513 | */ | |
60e36561 | 514 | static struct zebra_fec *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 515 | { |
d62a17ae | 516 | struct route_node *rn; |
f31e084c | 517 | |
d62a17ae | 518 | apply_mask(p); |
519 | rn = route_node_lookup(table, p); | |
520 | if (!rn) | |
521 | return NULL; | |
f31e084c | 522 | |
d62a17ae | 523 | route_unlock_node(rn); |
524 | return (rn->info); | |
f31e084c DS |
525 | } |
526 | ||
527 | /* | |
5aba114a DS |
528 | * Add a FEC. This may be upon a client registering for a binding |
529 | * or when a binding is configured. | |
f31e084c | 530 | */ |
60e36561 DS |
531 | static struct zebra_fec *fec_add(struct route_table *table, struct prefix *p, |
532 | mpls_label_t label, uint32_t flags, | |
533 | uint32_t label_index) | |
f31e084c | 534 | { |
d62a17ae | 535 | struct route_node *rn; |
60e36561 | 536 | struct zebra_fec *fec; |
f31e084c | 537 | |
d62a17ae | 538 | apply_mask(p); |
f31e084c | 539 | |
d62a17ae | 540 | /* Lookup (or add) route node.*/ |
541 | rn = route_node_get(table, p); | |
542 | if (!rn) | |
543 | return NULL; | |
f31e084c | 544 | |
d62a17ae | 545 | fec = rn->info; |
f31e084c | 546 | |
d62a17ae | 547 | if (!fec) { |
60e36561 | 548 | fec = XCALLOC(MTYPE_FEC, sizeof(struct zebra_fec)); |
f31e084c | 549 | |
d62a17ae | 550 | rn->info = fec; |
551 | fec->rn = rn; | |
552 | fec->label = label; | |
553 | fec->client_list = list_new(); | |
554 | } else | |
555 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 556 | |
d62a17ae | 557 | fec->label_index = label_index; |
558 | fec->flags = flags; | |
f31e084c | 559 | |
d62a17ae | 560 | return fec; |
f31e084c DS |
561 | } |
562 | ||
563 | /* | |
5aba114a DS |
564 | * Delete a FEC. This may be upon the last client deregistering for |
565 | * a FEC and no binding exists or when the binding is deleted and there | |
566 | * are no registered clients. | |
f31e084c | 567 | */ |
60e36561 | 568 | static int fec_del(struct zebra_fec *fec) |
f31e084c | 569 | { |
6a154c88 | 570 | list_delete(&fec->client_list); |
d62a17ae | 571 | fec->rn->info = NULL; |
572 | route_unlock_node(fec->rn); | |
573 | XFREE(MTYPE_FEC, fec); | |
574 | return 0; | |
f31e084c DS |
575 | } |
576 | ||
7758e3f3 | 577 | /* |
578 | * Hash function for label. | |
579 | */ | |
d8b87afe | 580 | static unsigned int label_hash(const void *p) |
7758e3f3 | 581 | { |
a7d2146a | 582 | const struct zebra_ile *ile = p; |
7758e3f3 | 583 | |
d62a17ae | 584 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 585 | } |
586 | ||
587 | /* | |
588 | * Compare 2 LSP hash entries based on in-label. | |
589 | */ | |
74df8d6d | 590 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 591 | { |
a7d2146a DS |
592 | const struct zebra_ile *ile1 = p1; |
593 | const struct zebra_ile *ile2 = p2; | |
7758e3f3 | 594 | |
d62a17ae | 595 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 596 | } |
597 | ||
40c7bdb0 | 598 | /* |
599 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
600 | * the passed flag. | |
601 | * NOTE: Looking only for connected routes right now. | |
602 | */ | |
f2595bd5 | 603 | static int nhlfe_nexthop_active_ipv4(struct zebra_nhlfe *nhlfe, |
d62a17ae | 604 | struct nexthop *nexthop) |
40c7bdb0 | 605 | { |
d62a17ae | 606 | struct route_table *table; |
607 | struct prefix_ipv4 p; | |
608 | struct route_node *rn; | |
609 | struct route_entry *match; | |
610 | struct nexthop *match_nh; | |
40c7bdb0 | 611 | |
4a7371e9 | 612 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 613 | if (!table) |
614 | return 0; | |
40c7bdb0 | 615 | |
d62a17ae | 616 | /* Lookup nexthop in IPv4 routing table. */ |
617 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
618 | p.family = AF_INET; | |
936fbaef | 619 | p.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 620 | p.prefix = nexthop->gate.ipv4; |
40c7bdb0 | 621 | |
d62a17ae | 622 | rn = route_node_match(table, (struct prefix *)&p); |
623 | if (!rn) | |
624 | return 0; | |
40c7bdb0 | 625 | |
d62a17ae | 626 | route_unlock_node(rn); |
88d88a9c | 627 | |
d62a17ae | 628 | /* Locate a valid connected route. */ |
a2addae8 | 629 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 630 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
631 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
632 | continue; | |
633 | ||
c415d895 | 634 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 635 | match_nh = match_nh->next) { |
636 | if (match->type == ZEBRA_ROUTE_CONNECT | |
637 | || nexthop->ifindex == match_nh->ifindex) { | |
638 | nexthop->ifindex = match_nh->ifindex; | |
639 | return 1; | |
640 | } | |
641 | } | |
88d88a9c | 642 | } |
40c7bdb0 | 643 | |
d62a17ae | 644 | return 0; |
40c7bdb0 | 645 | } |
646 | ||
647 | ||
648 | /* | |
649 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
650 | * the passed flag. | |
651 | * NOTE: Looking only for connected routes right now. | |
652 | */ | |
f2595bd5 | 653 | static int nhlfe_nexthop_active_ipv6(struct zebra_nhlfe *nhlfe, |
d62a17ae | 654 | struct nexthop *nexthop) |
40c7bdb0 | 655 | { |
d62a17ae | 656 | struct route_table *table; |
657 | struct prefix_ipv6 p; | |
658 | struct route_node *rn; | |
659 | struct route_entry *match; | |
40c7bdb0 | 660 | |
4a7371e9 | 661 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 662 | if (!table) |
663 | return 0; | |
40c7bdb0 | 664 | |
d62a17ae | 665 | /* Lookup nexthop in IPv6 routing table. */ |
666 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
667 | p.family = AF_INET6; | |
f4d81e55 | 668 | p.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 669 | p.prefix = nexthop->gate.ipv6; |
40c7bdb0 | 670 | |
d62a17ae | 671 | rn = route_node_match(table, (struct prefix *)&p); |
672 | if (!rn) | |
673 | return 0; | |
40c7bdb0 | 674 | |
d62a17ae | 675 | route_unlock_node(rn); |
40c7bdb0 | 676 | |
d62a17ae | 677 | /* Locate a valid connected route. */ |
a2addae8 | 678 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 679 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
680 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
681 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
682 | break; | |
683 | } | |
40c7bdb0 | 684 | |
c415d895 | 685 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 686 | return 0; |
40c7bdb0 | 687 | |
c415d895 | 688 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 689 | return 1; |
40c7bdb0 | 690 | } |
691 | ||
692 | ||
693 | /* | |
694 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
695 | * or not. | |
696 | * NOTE: Each NHLFE points to only 1 nexthop. | |
697 | */ | |
f2595bd5 | 698 | static int nhlfe_nexthop_active(struct zebra_nhlfe *nhlfe) |
d62a17ae | 699 | { |
700 | struct nexthop *nexthop; | |
701 | struct interface *ifp; | |
86f07f44 | 702 | struct zebra_ns *zns; |
d62a17ae | 703 | |
704 | nexthop = nhlfe->nexthop; | |
705 | if (!nexthop) // unexpected | |
706 | return 0; | |
707 | ||
708 | /* Check on nexthop based on type. */ | |
709 | switch (nexthop->type) { | |
b9abd9ad DS |
710 | case NEXTHOP_TYPE_IFINDEX: |
711 | /* | |
712 | * Lookup if this type is special. The | |
713 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
714 | * forward into a different table for | |
715 | * processing. As such this ifindex | |
716 | * passed to us may be a VRF device | |
717 | * which will not be in the default | |
718 | * VRF. So let's look in all of them | |
719 | */ | |
86f07f44 PG |
720 | zns = zebra_ns_lookup(NS_DEFAULT); |
721 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
722 | if (ifp && if_is_operative(ifp)) |
723 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
724 | else | |
725 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
726 | break; | |
d62a17ae | 727 | case NEXTHOP_TYPE_IPV4: |
728 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
729 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
730 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
731 | else | |
732 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
733 | break; | |
734 | ||
735 | case NEXTHOP_TYPE_IPV6: | |
736 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
737 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
738 | else | |
739 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
740 | break; | |
741 | ||
742 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
743 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
744 | ifp = if_lookup_by_index(nexthop->ifindex, |
745 | nexthop->vrf_id); | |
d62a17ae | 746 | if (ifp && if_is_operative(ifp)) |
747 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
748 | else | |
749 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
750 | } else { | |
751 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
752 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
753 | else | |
754 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
755 | } | |
756 | break; | |
757 | ||
10cc80ca | 758 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 759 | break; |
760 | } | |
761 | ||
762 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 763 | } |
764 | ||
765 | /* | |
766 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
767 | * reachability and select the best. Multipath entries are also | |
768 | * marked. This is invoked when an LSP scheduled for processing (due | |
769 | * to some change) is examined. | |
770 | */ | |
8f74a383 | 771 | static void lsp_select_best_nhlfe(struct zebra_lsp *lsp) |
d62a17ae | 772 | { |
f2595bd5 DS |
773 | struct zebra_nhlfe *nhlfe; |
774 | struct zebra_nhlfe *best; | |
d62a17ae | 775 | struct nexthop *nexthop; |
776 | int changed = 0; | |
777 | ||
778 | if (!lsp) | |
779 | return; | |
780 | ||
781 | best = NULL; | |
782 | lsp->num_ecmp = 0; | |
783 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
784 | ||
785 | /* | |
786 | * First compute the best path, after checking nexthop status. We are | |
5e29e1a1 | 787 | * only concerned with non-deleted NHLFEs. |
d62a17ae | 788 | */ |
ee70f629 | 789 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 790 | /* Clear selection flags. */ |
791 | UNSET_FLAG(nhlfe->flags, | |
792 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
793 | ||
794 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
795 | && nhlfe_nexthop_active(nhlfe)) { | |
796 | if (!best || (nhlfe->distance < best->distance)) | |
797 | best = nhlfe; | |
798 | } | |
799 | } | |
800 | ||
801 | lsp->best_nhlfe = best; | |
802 | if (!lsp->best_nhlfe) | |
803 | return; | |
804 | ||
5e29e1a1 MS |
805 | /* |
806 | * Check the active status of backup nhlfes also | |
807 | */ | |
808 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
809 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
810 | (void)nhlfe_nexthop_active(nhlfe); | |
811 | } | |
812 | ||
d62a17ae | 813 | /* Mark best NHLFE as selected. */ |
814 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
815 | ||
816 | /* | |
817 | * If best path exists, see if there is ECMP. While doing this, note if | |
818 | * a | |
819 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
820 | * still selected has a change or an installed entry is to be removed. | |
821 | */ | |
ee70f629 | 822 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 823 | int nh_chg, nh_sel, nh_inst; |
824 | ||
825 | nexthop = nhlfe->nexthop; | |
826 | if (!nexthop) // unexpected | |
827 | continue; | |
828 | ||
829 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
830 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
831 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
832 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
833 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
834 | lsp->num_ecmp++; | |
835 | } | |
836 | ||
837 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
838 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
839 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
840 | nh_inst = | |
841 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
842 | ||
843 | if ((nh_sel && !nh_inst) | |
844 | || (nh_sel && nh_inst && nh_chg) | |
845 | || (nh_inst && !nh_sel)) | |
846 | changed = 1; | |
847 | } | |
848 | ||
849 | /* We have finished examining, clear changed flag. */ | |
850 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
851 | } | |
852 | ||
853 | if (changed) | |
854 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 855 | } |
856 | ||
857 | /* | |
858 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
859 | * process exit. | |
860 | */ | |
e3b78da8 | 861 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 862 | { |
8f74a383 | 863 | struct zebra_lsp *lsp; |
40c7bdb0 | 864 | |
8f74a383 | 865 | lsp = (struct zebra_lsp *)bucket->data; |
4a83e7a0 | 866 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 867 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 868 | } |
869 | ||
870 | /* | |
871 | * Schedule LSP forwarding entry for processing. Called upon changes | |
872 | * that may impact LSPs such as nexthop / connected route changes. | |
873 | */ | |
e3b78da8 | 874 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 875 | { |
8f74a383 | 876 | struct zebra_lsp *lsp; |
40c7bdb0 | 877 | |
8f74a383 | 878 | lsp = (struct zebra_lsp *)bucket->data; |
2aa2a407 MS |
879 | |
880 | /* In the common flow, this is used when external events occur. For | |
881 | * LSPs with backup nhlfes, we'll assume that the forwarding | |
882 | * plane will use the backups to handle these events, until the | |
883 | * owning protocol can react. | |
884 | */ | |
885 | if (ctxt == NULL) { | |
886 | /* Skip LSPs with backups */ | |
887 | if (nhlfe_list_first(&lsp->backup_nhlfe_list) != NULL) { | |
888 | if (IS_ZEBRA_DEBUG_MPLS_DETAIL) | |
889 | zlog_debug("%s: skip LSP in-label %u", | |
890 | __func__, lsp->ile.in_label); | |
891 | return; | |
892 | } | |
893 | } | |
894 | ||
0af35d90 | 895 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 896 | } |
897 | ||
898 | /* | |
899 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
900 | * any multipaths and update or delete from the kernel, as needed. | |
901 | */ | |
d62a17ae | 902 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
903 | { | |
8f74a383 | 904 | struct zebra_lsp *lsp; |
f2595bd5 | 905 | struct zebra_nhlfe *oldbest, *newbest; |
d62a17ae | 906 | char buf[BUFSIZ], buf2[BUFSIZ]; |
907 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 908 | enum zebra_dplane_result res; |
d62a17ae | 909 | |
8f74a383 | 910 | lsp = (struct zebra_lsp *)data; |
d62a17ae | 911 | if (!lsp) // unexpected |
912 | return WQ_SUCCESS; | |
913 | ||
914 | oldbest = lsp->best_nhlfe; | |
915 | ||
916 | /* Select best NHLFE(s) */ | |
917 | lsp_select_best_nhlfe(lsp); | |
918 | ||
919 | newbest = lsp->best_nhlfe; | |
920 | ||
921 | if (IS_ZEBRA_DEBUG_MPLS) { | |
922 | if (oldbest) | |
5e29e1a1 | 923 | nhlfe2str(oldbest, buf, sizeof(buf)); |
d62a17ae | 924 | if (newbest) |
5e29e1a1 | 925 | nhlfe2str(newbest, buf2, sizeof(buf2)); |
d62a17ae | 926 | zlog_debug( |
3efd0893 | 927 | "Process LSP in-label %u oldbest %s newbest %s flags 0x%x ecmp# %d", |
d62a17ae | 928 | lsp->ile.in_label, oldbest ? buf : "NULL", |
929 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
930 | } | |
931 | ||
932 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
933 | /* Not already installed */ | |
934 | if (newbest) { | |
2b63430c DS |
935 | |
936 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
937 | |
938 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 939 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
940 | /* Set 'installed' flag so we will know |
941 | * that an install is in-flight. | |
942 | */ | |
943 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
944 | ||
945 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 946 | break; |
ea1c14f6 | 947 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
948 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
949 | "LSP Install Failure: %u", | |
950 | lsp->ile.in_label); | |
7c5d0e18 | 951 | break; |
ea1c14f6 | 952 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
953 | zvrf->lsp_installs++; |
954 | break; | |
955 | } | |
d62a17ae | 956 | } |
957 | } else { | |
958 | /* Installed, may need an update and/or delete. */ | |
959 | if (!newbest) { | |
d37f4d6c MS |
960 | res = dplane_lsp_delete(lsp); |
961 | ||
962 | /* We do some of the lsp cleanup immediately for | |
963 | * deletes. | |
964 | */ | |
965 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
966 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 967 | |
d37f4d6c | 968 | switch (res) { |
ea1c14f6 | 969 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 970 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 971 | break; |
ea1c14f6 | 972 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
973 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
974 | "LSP Deletion Failure: %u", | |
975 | lsp->ile.in_label); | |
7c5d0e18 | 976 | break; |
ea1c14f6 | 977 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
978 | zvrf->lsp_removals++; |
979 | break; | |
980 | } | |
d62a17ae | 981 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
f2595bd5 | 982 | struct zebra_nhlfe *nhlfe; |
9fa38ec6 | 983 | struct nexthop *nexthop; |
2b63430c DS |
984 | |
985 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
986 | |
987 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 988 | * so we know an update is in-flight. |
d37f4d6c | 989 | */ |
e6d44ec7 | 990 | |
9fa38ec6 DS |
991 | /* |
992 | * Any NHLFE that was installed but is not | |
993 | * selected now needs to have its flags updated. | |
994 | */ | |
ee70f629 | 995 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
9fa38ec6 DS |
996 | nexthop = nhlfe->nexthop; |
997 | if (!nexthop) | |
998 | continue; | |
999 | ||
1000 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
1001 | NHLFE_FLAG_INSTALLED) |
1002 | && !CHECK_FLAG(nhlfe->flags, | |
1003 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
1004 | UNSET_FLAG(nhlfe->flags, |
1005 | NHLFE_FLAG_INSTALLED); | |
1006 | UNSET_FLAG(nexthop->flags, | |
1007 | NEXTHOP_FLAG_FIB); | |
1008 | } | |
1009 | } | |
1010 | ||
d37f4d6c | 1011 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 1012 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 1013 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 1014 | break; |
ea1c14f6 | 1015 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
1016 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1017 | "LSP Update Failure: %u", | |
1018 | lsp->ile.in_label); | |
7c5d0e18 | 1019 | break; |
ea1c14f6 | 1020 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1021 | zvrf->lsp_installs++; |
1022 | break; | |
1023 | } | |
d62a17ae | 1024 | } |
1025 | } | |
1026 | ||
1027 | return WQ_SUCCESS; | |
40c7bdb0 | 1028 | } |
1029 | ||
1030 | ||
1031 | /* | |
1032 | * Callback upon processing completion of a LSP forwarding entry. | |
1033 | */ | |
d62a17ae | 1034 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1035 | { |
d62a17ae | 1036 | struct zebra_vrf *zvrf; |
8f74a383 | 1037 | struct zebra_lsp *lsp; |
d62a17ae | 1038 | struct hash *lsp_table; |
f2595bd5 | 1039 | struct zebra_nhlfe *nhlfe; |
b0d10d93 MS |
1040 | bool in_shutdown = false; |
1041 | ||
1042 | /* If zebra is shutting down, don't delete any structs, | |
1043 | * just ignore this callback. The LSPs will be cleaned up | |
1044 | * during the shutdown processing. | |
1045 | */ | |
1046 | in_shutdown = atomic_load_explicit(&zrouter.in_shutdown, | |
1047 | memory_order_relaxed); | |
1048 | if (in_shutdown) | |
1049 | return; | |
40c7bdb0 | 1050 | |
d62a17ae | 1051 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1052 | assert(zvrf); | |
40c7bdb0 | 1053 | |
d62a17ae | 1054 | lsp_table = zvrf->lsp_table; |
1055 | if (!lsp_table) // unexpected | |
1056 | return; | |
40c7bdb0 | 1057 | |
8f74a383 | 1058 | lsp = (struct zebra_lsp *)data; |
d62a17ae | 1059 | if (!lsp) // unexpected |
1060 | return; | |
40c7bdb0 | 1061 | |
d62a17ae | 1062 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1063 | * exist, | |
1064 | * delete LSP entry also. | |
1065 | */ | |
1066 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1067 | |
ee70f629 | 1068 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1069 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) |
1070 | nhlfe_del(nhlfe); | |
1071 | } | |
40c7bdb0 | 1072 | |
1323491d MS |
1073 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1074 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1075 | nhlfe_del(nhlfe); | |
1076 | } | |
1077 | ||
1078 | lsp_check_free(lsp_table, &lsp); | |
40c7bdb0 | 1079 | } |
1080 | ||
1081 | /* | |
1082 | * Callback upon finishing the processing of all scheduled | |
1083 | * LSP forwarding entries. | |
1084 | */ | |
d62a17ae | 1085 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1086 | { |
d62a17ae | 1087 | /* Nothing to do for now. */ |
40c7bdb0 | 1088 | } |
1089 | ||
1090 | /* | |
1091 | * Add LSP forwarding entry to queue for subsequent processing. | |
1092 | */ | |
8f74a383 | 1093 | static int lsp_processq_add(struct zebra_lsp *lsp) |
40c7bdb0 | 1094 | { |
d62a17ae | 1095 | /* If already scheduled, exit. */ |
1096 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1097 | return 0; | |
40c7bdb0 | 1098 | |
e2353ec2 | 1099 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1100 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1101 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1102 | return -1; |
1103 | } | |
33c32282 | 1104 | |
e2353ec2 | 1105 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1106 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1107 | return 0; | |
40c7bdb0 | 1108 | } |
1109 | ||
1110 | /* | |
1111 | * Callback to allocate LSP forwarding table entry. | |
1112 | */ | |
d62a17ae | 1113 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1114 | { |
a7d2146a | 1115 | const struct zebra_ile *ile = p; |
8f74a383 | 1116 | struct zebra_lsp *lsp; |
40c7bdb0 | 1117 | |
8f74a383 | 1118 | lsp = XCALLOC(MTYPE_LSP, sizeof(struct zebra_lsp)); |
d62a17ae | 1119 | lsp->ile = *ile; |
ee70f629 | 1120 | nhlfe_list_init(&lsp->nhlfe_list); |
cd4bb96f | 1121 | nhlfe_list_init(&lsp->backup_nhlfe_list); |
40c7bdb0 | 1122 | |
d62a17ae | 1123 | if (IS_ZEBRA_DEBUG_MPLS) |
1124 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1125 | |
d62a17ae | 1126 | return ((void *)lsp); |
40c7bdb0 | 1127 | } |
1128 | ||
1323491d MS |
1129 | /* |
1130 | * Check whether lsp can be freed - no nhlfes, e.g., and call free api | |
1131 | */ | |
8f74a383 | 1132 | static void lsp_check_free(struct hash *lsp_table, struct zebra_lsp **plsp) |
1323491d | 1133 | { |
8f74a383 | 1134 | struct zebra_lsp *lsp; |
1323491d MS |
1135 | |
1136 | if (plsp == NULL || *plsp == NULL) | |
1137 | return; | |
1138 | ||
1139 | lsp = *plsp; | |
1140 | ||
1141 | if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL) && | |
1142 | (nhlfe_list_first(&lsp->backup_nhlfe_list) == NULL) && | |
1143 | !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1144 | lsp_free(lsp_table, plsp); | |
1145 | } | |
1146 | ||
ebab422a MS |
1147 | /* |
1148 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1149 | * free LSP object. | |
1150 | */ | |
8f74a383 | 1151 | static void lsp_free(struct hash *lsp_table, struct zebra_lsp **plsp) |
ebab422a | 1152 | { |
8f74a383 | 1153 | struct zebra_lsp *lsp; |
f2595bd5 | 1154 | struct zebra_nhlfe *nhlfe; |
ebab422a MS |
1155 | |
1156 | if (plsp == NULL || *plsp == NULL) | |
1157 | return; | |
1158 | ||
1159 | lsp = *plsp; | |
1160 | ||
1161 | if (IS_ZEBRA_DEBUG_MPLS) | |
1162 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1163 | lsp->ile.in_label, lsp->flags); | |
1164 | ||
1165 | /* Free nhlfes, if any. */ | |
ee70f629 | 1166 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
ebab422a | 1167 | nhlfe_del(nhlfe); |
ebab422a | 1168 | |
cd4bb96f MS |
1169 | /* Free backup nhlfes, if any. */ |
1170 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) | |
1171 | nhlfe_del(nhlfe); | |
1172 | ||
ebab422a MS |
1173 | hash_release(lsp_table, &lsp->ile); |
1174 | XFREE(MTYPE_LSP, lsp); | |
1175 | ||
1176 | *plsp = NULL; | |
1177 | } | |
1178 | ||
40c7bdb0 | 1179 | /* |
1180 | * Create printable string for NHLFE entry. | |
1181 | */ | |
f2595bd5 | 1182 | static char *nhlfe2str(const struct zebra_nhlfe *nhlfe, char *buf, int size) |
40c7bdb0 | 1183 | { |
608a57c0 | 1184 | const struct nexthop *nexthop; |
40c7bdb0 | 1185 | |
d62a17ae | 1186 | buf[0] = '\0'; |
1187 | nexthop = nhlfe->nexthop; | |
1188 | switch (nexthop->type) { | |
1189 | case NEXTHOP_TYPE_IPV4: | |
1190 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1191 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1192 | break; | |
1193 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1194 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1195 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1196 | break; | |
b9abd9ad DS |
1197 | case NEXTHOP_TYPE_IFINDEX: |
1198 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
10cc80ca | 1199 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 1200 | break; |
1201 | } | |
40c7bdb0 | 1202 | |
d62a17ae | 1203 | return buf; |
40c7bdb0 | 1204 | } |
1205 | ||
1206 | /* | |
1207 | * Check if NHLFE matches with search info passed. | |
1208 | */ | |
f2595bd5 DS |
1209 | static int nhlfe_nhop_match(struct zebra_nhlfe *nhlfe, |
1210 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1211 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1212 | { |
d62a17ae | 1213 | struct nexthop *nhop; |
1214 | int cmp = 1; | |
40c7bdb0 | 1215 | |
d62a17ae | 1216 | nhop = nhlfe->nexthop; |
1217 | if (!nhop) | |
1218 | return 1; | |
40c7bdb0 | 1219 | |
d62a17ae | 1220 | if (nhop->type != gtype) |
1221 | return 1; | |
40c7bdb0 | 1222 | |
d62a17ae | 1223 | switch (nhop->type) { |
1224 | case NEXTHOP_TYPE_IPV4: | |
1225 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1226 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1227 | sizeof(struct in_addr)); | |
1228 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1229 | cmp = !(nhop->ifindex == ifindex); | |
1230 | break; | |
1231 | case NEXTHOP_TYPE_IPV6: | |
1232 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1233 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1234 | sizeof(struct in6_addr)); | |
1235 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1236 | cmp = !(nhop->ifindex == ifindex); | |
1237 | break; | |
b9abd9ad DS |
1238 | case NEXTHOP_TYPE_IFINDEX: |
1239 | cmp = !(nhop->ifindex == ifindex); | |
1240 | break; | |
10cc80ca | 1241 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 1242 | break; |
1243 | } | |
40c7bdb0 | 1244 | |
d62a17ae | 1245 | return cmp; |
40c7bdb0 | 1246 | } |
1247 | ||
1248 | ||
1249 | /* | |
1250 | * Locate NHLFE that matches with passed info. | |
1251 | */ | |
f2595bd5 DS |
1252 | static struct zebra_nhlfe *nhlfe_find(struct nhlfe_list_head *list, |
1253 | enum lsp_types_t lsp_type, | |
1254 | enum nexthop_types_t gtype, | |
1255 | const union g_addr *gate, | |
1256 | ifindex_t ifindex) | |
40c7bdb0 | 1257 | { |
f2595bd5 | 1258 | struct zebra_nhlfe *nhlfe; |
40c7bdb0 | 1259 | |
ee70f629 | 1260 | frr_each_safe(nhlfe_list, list, nhlfe) { |
d62a17ae | 1261 | if (nhlfe->type != lsp_type) |
1262 | continue; | |
1263 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1264 | break; | |
1265 | } | |
40c7bdb0 | 1266 | |
d62a17ae | 1267 | return nhlfe; |
40c7bdb0 | 1268 | } |
1269 | ||
ee70f629 MS |
1270 | /* |
1271 | * Allocate and init new NHLFE. | |
1272 | */ | |
f2595bd5 | 1273 | static struct zebra_nhlfe * |
8f74a383 | 1274 | nhlfe_alloc(struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
f2595bd5 DS |
1275 | enum nexthop_types_t gtype, const union g_addr *gate, |
1276 | ifindex_t ifindex, uint8_t num_labels, const mpls_label_t *labels) | |
d62a17ae | 1277 | { |
f2595bd5 | 1278 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 1279 | struct nexthop *nexthop; |
1280 | ||
3e0a9b40 | 1281 | assert(lsp); |
d62a17ae | 1282 | |
f2595bd5 | 1283 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(struct zebra_nhlfe)); |
d62a17ae | 1284 | |
1285 | nhlfe->lsp = lsp; | |
1286 | nhlfe->type = lsp_type; | |
1287 | nhlfe->distance = lsp_distance(lsp_type); | |
1288 | ||
1289 | nexthop = nexthop_new(); | |
cd4bb96f | 1290 | |
5065db0a | 1291 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1292 | |
4a7371e9 | 1293 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1294 | nexthop->type = gtype; |
1295 | switch (nexthop->type) { | |
1296 | case NEXTHOP_TYPE_IPV4: | |
1297 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1298 | nexthop->gate.ipv4 = gate->ipv4; | |
1299 | if (ifindex) | |
1300 | nexthop->ifindex = ifindex; | |
1301 | break; | |
1302 | case NEXTHOP_TYPE_IPV6: | |
1303 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1304 | nexthop->gate.ipv6 = gate->ipv6; | |
1305 | if (ifindex) | |
1306 | nexthop->ifindex = ifindex; | |
1307 | break; | |
b9abd9ad DS |
1308 | case NEXTHOP_TYPE_IFINDEX: |
1309 | nexthop->ifindex = ifindex; | |
1310 | break; | |
10cc80ca | 1311 | case NEXTHOP_TYPE_BLACKHOLE: |
a44e3106 MS |
1312 | if (IS_ZEBRA_DEBUG_MPLS) |
1313 | zlog_debug("%s: invalid: blackhole nexthop", __func__); | |
1314 | ||
d62a17ae | 1315 | nexthop_free(nexthop); |
1316 | XFREE(MTYPE_NHLFE, nhlfe); | |
1317 | return NULL; | |
d62a17ae | 1318 | } |
d62a17ae | 1319 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1320 | |
1321 | return nhlfe; | |
1322 | } | |
1323 | ||
1324 | /* | |
cc1b9746 MS |
1325 | * Add primary or backup NHLFE. Base entry must have been created and |
1326 | * duplicate check done. | |
ee70f629 | 1327 | */ |
8f74a383 | 1328 | static struct zebra_nhlfe *nhlfe_add(struct zebra_lsp *lsp, |
f2595bd5 DS |
1329 | enum lsp_types_t lsp_type, |
1330 | enum nexthop_types_t gtype, | |
1331 | const union g_addr *gate, | |
1332 | ifindex_t ifindex, uint8_t num_labels, | |
1333 | const mpls_label_t *labels, bool is_backup) | |
ee70f629 | 1334 | { |
f2595bd5 | 1335 | struct zebra_nhlfe *nhlfe; |
ee70f629 MS |
1336 | |
1337 | if (!lsp) | |
1338 | return NULL; | |
1339 | ||
a44e3106 MS |
1340 | /* Must have labels */ |
1341 | if (num_labels == 0 || labels == NULL) { | |
1342 | if (IS_ZEBRA_DEBUG_MPLS) | |
1343 | zlog_debug("%s: invalid nexthop: no labels", __func__); | |
1344 | ||
1345 | return NULL; | |
1346 | } | |
1347 | ||
ee70f629 | 1348 | /* Allocate new object */ |
cd4bb96f MS |
1349 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1350 | labels); | |
1351 | ||
6140b3b4 DS |
1352 | if (!nhlfe) |
1353 | return NULL; | |
1354 | ||
cc1b9746 MS |
1355 | /* Enqueue to LSP: primaries at head of list, backups at tail */ |
1356 | if (is_backup) { | |
1357 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
1358 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); | |
1359 | } else | |
1360 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); | |
d62a17ae | 1361 | |
1362 | return nhlfe; | |
40c7bdb0 | 1363 | } |
1364 | ||
1365 | /* | |
cd4bb96f MS |
1366 | * Common delete for NHLFEs. |
1367 | */ | |
f2595bd5 | 1368 | static void nhlfe_free(struct zebra_nhlfe *nhlfe) |
cd4bb96f MS |
1369 | { |
1370 | if (!nhlfe) | |
1371 | return; | |
1372 | ||
1373 | /* Free nexthop. */ | |
1374 | if (nhlfe->nexthop) | |
1375 | nexthop_free(nhlfe->nexthop); | |
1376 | ||
1377 | nhlfe->nexthop = NULL; | |
1378 | ||
1379 | XFREE(MTYPE_NHLFE, nhlfe); | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /* | |
1384 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1385 | */ |
f2595bd5 | 1386 | static int nhlfe_del(struct zebra_nhlfe *nhlfe) |
40c7bdb0 | 1387 | { |
8f74a383 | 1388 | struct zebra_lsp *lsp; |
40c7bdb0 | 1389 | |
d62a17ae | 1390 | if (!nhlfe) |
1391 | return -1; | |
40c7bdb0 | 1392 | |
d62a17ae | 1393 | lsp = nhlfe->lsp; |
1394 | if (!lsp) | |
1395 | return -1; | |
40c7bdb0 | 1396 | |
d62a17ae | 1397 | if (nhlfe == lsp->best_nhlfe) |
1398 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1399 | |
ee70f629 | 1400 | /* Unlink from LSP */ |
cd4bb96f MS |
1401 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1402 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1403 | else | |
1404 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1405 | |
cd4bb96f MS |
1406 | nhlfe->lsp = NULL; |
1407 | ||
1408 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1409 | |
d62a17ae | 1410 | return 0; |
40c7bdb0 | 1411 | } |
1412 | ||
a64448ba DS |
1413 | /* |
1414 | * Update label for NHLFE entry. | |
1415 | */ | |
f2595bd5 | 1416 | static void nhlfe_out_label_update(struct zebra_nhlfe *nhlfe, |
8ecdb26e | 1417 | struct mpls_label_stack *nh_label) |
d62a17ae | 1418 | { |
1419 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1420 | } | |
1421 | ||
8f74a383 | 1422 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, struct zebra_lsp *lsp, |
d62a17ae | 1423 | enum lsp_types_t type) |
1424 | { | |
f2595bd5 | 1425 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 1426 | int schedule_lsp = 0; |
1427 | char buf[BUFSIZ]; | |
1428 | ||
4a2a5236 MS |
1429 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1430 | schedule_lsp = 1; | |
1431 | ||
d62a17ae | 1432 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ |
ee70f629 | 1433 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1434 | /* Skip non-static NHLFEs */ |
1435 | if (nhlfe->type != type) | |
1436 | continue; | |
1437 | ||
1438 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1439 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 1440 | zlog_debug( |
1441 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1442 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1443 | } | |
1444 | ||
1445 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1446 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1447 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1448 | schedule_lsp = 1; | |
1449 | } else { | |
1450 | nhlfe_del(nhlfe); | |
1451 | } | |
1452 | } | |
1453 | ||
f2e7f4eb MS |
1454 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1455 | /* Skip non-static NHLFEs */ | |
1456 | if (nhlfe->type != type) | |
1457 | continue; | |
1458 | ||
1459 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1460 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
f2e7f4eb MS |
1461 | zlog_debug( |
1462 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1463 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1464 | } | |
1465 | ||
1466 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1467 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1468 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1469 | schedule_lsp = 1; | |
1470 | } else { | |
1471 | nhlfe_del(nhlfe); | |
1472 | } | |
1473 | } | |
1474 | ||
d62a17ae | 1475 | /* Queue LSP for processing, if needed, else delete. */ |
1476 | if (schedule_lsp) { | |
4a2a5236 MS |
1477 | if (IS_ZEBRA_DEBUG_MPLS) { |
1478 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
1479 | lsp->ile.in_label, lsp->flags); | |
1480 | } | |
d62a17ae | 1481 | if (lsp_processq_add(lsp)) |
1482 | return -1; | |
1323491d MS |
1483 | } else { |
1484 | lsp_check_free(lsp_table, &lsp); | |
1485 | } | |
d62a17ae | 1486 | |
1487 | return 0; | |
40c7bdb0 | 1488 | } |
1489 | ||
ce549947 RW |
1490 | /* |
1491 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1492 | * If no other NHLFEs exist, the entry would be deleted. | |
1493 | */ | |
d62a17ae | 1494 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1495 | mpls_label_t in_label) | |
ce549947 | 1496 | { |
d62a17ae | 1497 | struct hash *lsp_table; |
a7d2146a | 1498 | struct zebra_ile tmp_ile; |
8f74a383 | 1499 | struct zebra_lsp *lsp; |
ce549947 | 1500 | |
d62a17ae | 1501 | /* Lookup table. */ |
1502 | lsp_table = zvrf->lsp_table; | |
1503 | if (!lsp_table) | |
1504 | return -1; | |
ce549947 | 1505 | |
d62a17ae | 1506 | /* If entry is not present, exit. */ |
1507 | tmp_ile.in_label = in_label; | |
1508 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1509 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1510 | return 0; |
ce549947 | 1511 | |
d62a17ae | 1512 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1513 | } |
1514 | ||
f2595bd5 | 1515 | static json_object *nhlfe_json(struct zebra_nhlfe *nhlfe) |
b78b820d | 1516 | { |
d62a17ae | 1517 | json_object *json_nhlfe = NULL; |
3c0e1622 | 1518 | json_object *json_backups = NULL; |
31f937fb | 1519 | json_object *json_label_stack; |
d62a17ae | 1520 | struct nexthop *nexthop = nhlfe->nexthop; |
3c0e1622 | 1521 | int i; |
b78b820d | 1522 | |
d62a17ae | 1523 | json_nhlfe = json_object_new_object(); |
1524 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1525 | json_object_int_add(json_nhlfe, "outLabel", | |
1526 | nexthop->nh_label->label[0]); | |
31f937fb SM |
1527 | |
1528 | json_label_stack = json_object_new_array(); | |
1529 | json_object_object_add(json_nhlfe, "outLabelStack", json_label_stack); | |
1530 | for (i = 0; i < nexthop->nh_label->num_labels; i++) | |
1531 | json_object_array_add( | |
1532 | json_label_stack, | |
1533 | json_object_new_int(nexthop->nh_label->label[i])); | |
1534 | ||
d62a17ae | 1535 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); |
b78b820d | 1536 | |
d62a17ae | 1537 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1538 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1539 | |
d62a17ae | 1540 | switch (nexthop->type) { |
1541 | case NEXTHOP_TYPE_IPV4: | |
1542 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
08edf9c6 DA |
1543 | json_object_string_addf(json_nhlfe, "nexthop", "%pI4", |
1544 | &nexthop->gate.ipv4); | |
d62a17ae | 1545 | break; |
1546 | case NEXTHOP_TYPE_IPV6: | |
1547 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
08edf9c6 DA |
1548 | json_object_string_addf(json_nhlfe, "nexthop", "%pI6", |
1549 | &nexthop->gate.ipv6); | |
d62a17ae | 1550 | |
1551 | if (nexthop->ifindex) | |
4a7371e9 DS |
1552 | json_object_string_add(json_nhlfe, "interface", |
1553 | ifindex2ifname(nexthop->ifindex, | |
1554 | nexthop->vrf_id)); | |
d62a17ae | 1555 | break; |
10cc80ca | 1556 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
1557 | if (nexthop->ifindex) |
1558 | json_object_string_add(json_nhlfe, "interface", | |
1559 | ifindex2ifname(nexthop->ifindex, | |
1560 | nexthop->vrf_id)); | |
1561 | break; | |
1562 | case NEXTHOP_TYPE_BLACKHOLE: | |
d62a17ae | 1563 | break; |
1564 | } | |
3c0e1622 MS |
1565 | |
1566 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
1567 | json_backups = json_object_new_array(); | |
1568 | for (i = 0; i < nexthop->backup_num; i++) { | |
1569 | json_object_array_add( | |
1570 | json_backups, | |
1571 | json_object_new_int(nexthop->backup_idx[i])); | |
1572 | } | |
1573 | ||
1574 | json_object_object_add(json_nhlfe, "backupIndex", | |
1575 | json_backups); | |
1576 | } | |
1577 | ||
d62a17ae | 1578 | return json_nhlfe; |
b78b820d | 1579 | } |
1580 | ||
3ab18ff2 | 1581 | /* |
1582 | * Print the NHLFE for a LSP forwarding entry. | |
1583 | */ | |
f2595bd5 | 1584 | static void nhlfe_print(struct zebra_nhlfe *nhlfe, struct vty *vty, |
3c0e1622 | 1585 | const char *indent) |
d62a17ae | 1586 | { |
1587 | struct nexthop *nexthop; | |
a29c2887 | 1588 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1589 | |
1590 | nexthop = nhlfe->nexthop; | |
1591 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1592 | return; | |
1593 | ||
1594 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1595 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1596 | mpls_label2str(nexthop->nh_label->num_labels, |
1597 | nexthop->nh_label->label, | |
1598 | buf, sizeof(buf), 0), | |
d62a17ae | 1599 | nhlfe->distance); |
3c0e1622 MS |
1600 | |
1601 | if (indent) | |
1602 | vty_out(vty, "%s", indent); | |
1603 | ||
d62a17ae | 1604 | switch (nexthop->type) { |
1605 | case NEXTHOP_TYPE_IPV4: | |
1606 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
9bcef951 | 1607 | vty_out(vty, " via %pI4", &nexthop->gate.ipv4); |
d62a17ae | 1608 | if (nexthop->ifindex) |
1609 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1610 | ifindex2ifname(nexthop->ifindex, |
1611 | nexthop->vrf_id)); | |
d62a17ae | 1612 | break; |
1613 | case NEXTHOP_TYPE_IPV6: | |
1614 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1615 | vty_out(vty, " via %s", | |
2896f40e MS |
1616 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
1617 | sizeof(buf))); | |
d62a17ae | 1618 | if (nexthop->ifindex) |
1619 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1620 | ifindex2ifname(nexthop->ifindex, |
1621 | nexthop->vrf_id)); | |
d62a17ae | 1622 | break; |
10cc80ca | 1623 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
1624 | if (nexthop->ifindex) |
1625 | vty_out(vty, " dev %s", | |
1626 | ifindex2ifname(nexthop->ifindex, | |
1627 | nexthop->vrf_id)); | |
1628 | break; | |
1629 | case NEXTHOP_TYPE_BLACKHOLE: | |
d62a17ae | 1630 | break; |
1631 | } | |
5e29e1a1 MS |
1632 | vty_out(vty, "%s", |
1633 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)" | |
1634 | : ""); | |
996c9314 LB |
1635 | vty_out(vty, "%s", |
1636 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1637 | : ""); | |
d62a17ae | 1638 | vty_out(vty, "\n"); |
3ab18ff2 | 1639 | } |
1640 | ||
1641 | /* | |
1642 | * Print an LSP forwarding entry. | |
1643 | */ | |
8f74a383 | 1644 | static void lsp_print(struct vty *vty, struct zebra_lsp *lsp) |
3ab18ff2 | 1645 | { |
f2595bd5 | 1646 | struct zebra_nhlfe *nhlfe, *backup; |
474aebd9 | 1647 | int i, j; |
3ab18ff2 | 1648 | |
d62a17ae | 1649 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1650 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1651 | : ""); | |
3ab18ff2 | 1652 | |
a29c2887 | 1653 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3c0e1622 | 1654 | nhlfe_print(nhlfe, vty, NULL); |
a29c2887 | 1655 | |
3c0e1622 | 1656 | if (nhlfe->nexthop == NULL || |
474aebd9 MS |
1657 | !CHECK_FLAG(nhlfe->nexthop->flags, |
1658 | NEXTHOP_FLAG_HAS_BACKUP)) | |
1659 | continue; | |
a29c2887 | 1660 | |
474aebd9 | 1661 | /* Backup nhlfes: find backups in backup list */ |
a29c2887 | 1662 | |
474aebd9 | 1663 | for (j = 0; j < nhlfe->nexthop->backup_num; j++) { |
a29c2887 | 1664 | i = 0; |
5e29e1a1 | 1665 | backup = NULL; |
a29c2887 | 1666 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { |
474aebd9 | 1667 | if (i == nhlfe->nexthop->backup_idx[j]) |
a29c2887 MS |
1668 | break; |
1669 | i++; | |
1670 | } | |
1671 | ||
1672 | if (backup) { | |
1673 | vty_out(vty, " [backup %d]", i); | |
3c0e1622 | 1674 | nhlfe_print(backup, vty, " "); |
a29c2887 MS |
1675 | } |
1676 | } | |
1677 | } | |
3ab18ff2 | 1678 | } |
1679 | ||
1680 | /* | |
b78b820d | 1681 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1682 | */ |
8f74a383 | 1683 | static json_object *lsp_json(struct zebra_lsp *lsp) |
3ab18ff2 | 1684 | { |
f2595bd5 | 1685 | struct zebra_nhlfe *nhlfe = NULL; |
d62a17ae | 1686 | json_object *json = json_object_new_object(); |
1687 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1688 | |
d62a17ae | 1689 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1690 | |
d62a17ae | 1691 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1692 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1693 | |
ee70f629 | 1694 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1695 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1696 | |
d62a17ae | 1697 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
3c0e1622 MS |
1698 | json_nhlfe_list = NULL; |
1699 | ||
1700 | ||
1701 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
1702 | if (json_nhlfe_list == NULL) | |
1703 | json_nhlfe_list = json_object_new_array(); | |
1704 | ||
1705 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
1706 | } | |
1707 | ||
1708 | if (json_nhlfe_list) | |
1709 | json_object_object_add(json, "backupNexthops", json_nhlfe_list); | |
1710 | ||
d62a17ae | 1711 | return json; |
b78b820d | 1712 | } |
1713 | ||
1714 | ||
1715 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1716 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1717 | { |
d62a17ae | 1718 | unsigned int i; |
e3b78da8 | 1719 | struct hash_bucket *hb; |
d62a17ae | 1720 | struct list *sorted_list = list_new(); |
b78b820d | 1721 | |
d62a17ae | 1722 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1723 | |
d62a17ae | 1724 | for (i = 0; i < hash->size; i++) |
1725 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1726 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1727 | |
d62a17ae | 1728 | return sorted_list; |
3ab18ff2 | 1729 | } |
1730 | ||
7758e3f3 | 1731 | /* |
b78b820d | 1732 | * Compare two LSPs based on their label values. |
7758e3f3 | 1733 | */ |
8f74a383 | 1734 | static int lsp_cmp(const struct zebra_lsp *lsp1, const struct zebra_lsp *lsp2) |
7758e3f3 | 1735 | { |
d62a17ae | 1736 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1737 | return -1; | |
7758e3f3 | 1738 | |
d62a17ae | 1739 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1740 | return 1; | |
7758e3f3 | 1741 | |
d62a17ae | 1742 | return 0; |
7758e3f3 | 1743 | } |
1744 | ||
40c7bdb0 | 1745 | /* |
1746 | * Initialize work queue for processing changed LSPs. | |
1747 | */ | |
2561d12e | 1748 | static int mpls_processq_init(void) |
40c7bdb0 | 1749 | { |
e2353ec2 DS |
1750 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1751 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1752 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1753 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1754 | return -1; |
1755 | } | |
40c7bdb0 | 1756 | |
e2353ec2 DS |
1757 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1758 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1759 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1760 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1761 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1762 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1763 | |
d62a17ae | 1764 | return 0; |
40c7bdb0 | 1765 | } |
1766 | ||
7758e3f3 | 1767 | |
d37f4d6c MS |
1768 | /* |
1769 | * Process LSP update results from zebra dataplane. | |
1770 | */ | |
1771 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1772 | { | |
1773 | struct zebra_vrf *zvrf; | |
31f937fb | 1774 | mpls_label_t label; |
a7d2146a | 1775 | struct zebra_ile tmp_ile; |
d37f4d6c | 1776 | struct hash *lsp_table; |
8f74a383 | 1777 | struct zebra_lsp *lsp; |
f2595bd5 | 1778 | struct zebra_nhlfe *nhlfe; |
d37f4d6c MS |
1779 | struct nexthop *nexthop; |
1780 | enum dplane_op_e op; | |
8841f96e | 1781 | enum zebra_dplane_result status; |
31f937fb | 1782 | enum zebra_sr_policy_update_label_mode update_mode; |
d37f4d6c MS |
1783 | |
1784 | op = dplane_ctx_get_op(ctx); | |
1785 | status = dplane_ctx_get_status(ctx); | |
1786 | ||
1787 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1788 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1789 | ctx, dplane_op2str(op), | |
1790 | dplane_ctx_get_in_label(ctx), | |
1791 | dplane_res2str(status)); | |
1792 | ||
31f937fb SM |
1793 | label = dplane_ctx_get_in_label(ctx); |
1794 | ||
d37f4d6c MS |
1795 | switch (op) { |
1796 | case DPLANE_OP_LSP_INSTALL: | |
1797 | case DPLANE_OP_LSP_UPDATE: | |
1798 | /* Look for zebra LSP object */ | |
1799 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1800 | if (zvrf == NULL) | |
1801 | break; | |
1802 | ||
1803 | lsp_table = zvrf->lsp_table; | |
1804 | ||
31f937fb | 1805 | tmp_ile.in_label = label; |
d37f4d6c MS |
1806 | lsp = hash_lookup(lsp_table, &tmp_ile); |
1807 | if (lsp == NULL) { | |
1808 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1809 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1810 | ctx, dplane_ctx_get_in_label(ctx)); | |
1811 | break; | |
1812 | } | |
1813 | ||
1814 | /* TODO -- Confirm that this result is still 'current' */ | |
1815 | ||
c3753405 | 1816 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1817 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1818 | clear_nhlfe_installed(lsp); | |
1819 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1820 | "LSP Install Failure: in-label %u", | |
1821 | lsp->ile.in_label); | |
c3753405 MS |
1822 | break; |
1823 | } | |
1824 | ||
1825 | /* Update zebra object */ | |
1826 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1827 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
1828 | nexthop = nhlfe->nexthop; | |
1829 | if (!nexthop) | |
1830 | continue; | |
1831 | ||
1832 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) && | |
1833 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) { | |
1834 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1835 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1836 | } | |
d37f4d6c MS |
1837 | } |
1838 | ||
31f937fb SM |
1839 | update_mode = (op == DPLANE_OP_LSP_INSTALL) |
1840 | ? ZEBRA_SR_POLICY_LABEL_CREATED | |
1841 | : ZEBRA_SR_POLICY_LABEL_UPDATED; | |
1842 | zebra_sr_policy_label_update(label, update_mode); | |
d37f4d6c MS |
1843 | break; |
1844 | ||
1845 | case DPLANE_OP_LSP_DELETE: | |
31f937fb | 1846 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
3fd385c6 DS |
1847 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
1848 | "LSP Deletion Failure: in-label %u", | |
1849 | dplane_ctx_get_in_label(ctx)); | |
31f937fb SM |
1850 | break; |
1851 | } | |
1852 | zebra_sr_policy_label_update(label, | |
1853 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
d37f4d6c MS |
1854 | break; |
1855 | ||
1856 | default: | |
1857 | break; | |
1858 | ||
1859 | } /* Switch */ | |
1860 | ||
1861 | dplane_ctx_fini(&ctx); | |
1862 | } | |
1863 | ||
104e3ad9 | 1864 | /* |
68110c42 MS |
1865 | * Process LSP installation info from two sets of nhlfes: a set from |
1866 | * a dplane notification, and a set from the zebra LSP object. Update | |
1867 | * counters of installed nexthops, and return whether the LSP has changed. | |
104e3ad9 | 1868 | */ |
68110c42 MS |
1869 | static bool compare_notif_nhlfes(const struct nhlfe_list_head *ctx_head, |
1870 | struct nhlfe_list_head *nhlfe_head, | |
1871 | int *start_counter, int *end_counter) | |
104e3ad9 | 1872 | { |
f2595bd5 DS |
1873 | struct zebra_nhlfe *nhlfe; |
1874 | const struct zebra_nhlfe *ctx_nhlfe; | |
104e3ad9 MS |
1875 | struct nexthop *nexthop; |
1876 | const struct nexthop *ctx_nexthop; | |
68110c42 | 1877 | int start_count = 0, end_count = 0; |
188a00e0 | 1878 | bool changed_p = false; |
104e3ad9 MS |
1879 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1880 | ||
68110c42 | 1881 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { |
104e3ad9 MS |
1882 | char buf[NEXTHOP_STRLEN]; |
1883 | ||
1884 | nexthop = nhlfe->nexthop; | |
1885 | if (!nexthop) | |
1886 | continue; | |
1887 | ||
1888 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1889 | start_count++; | |
1890 | ||
68110c42 | 1891 | ctx_nhlfe = NULL; |
104e3ad9 | 1892 | ctx_nexthop = NULL; |
68110c42 | 1893 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
104e3ad9 MS |
1894 | ctx_nexthop = ctx_nhlfe->nexthop; |
1895 | if (!ctx_nexthop) | |
1896 | continue; | |
1897 | ||
1898 | if ((ctx_nexthop->type == nexthop->type) && | |
1899 | nexthop_same(ctx_nexthop, nexthop)) { | |
1900 | /* Matched */ | |
1901 | break; | |
1902 | } | |
1903 | } | |
1904 | ||
1905 | if (is_debug) | |
1906 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1907 | ||
1908 | if (ctx_nhlfe && ctx_nexthop) { | |
1909 | if (is_debug) { | |
1910 | const char *tstr = ""; | |
1911 | ||
1912 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1913 | NHLFE_FLAG_INSTALLED)) | |
1914 | tstr = "not "; | |
1915 | ||
1916 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1917 | buf, tstr); | |
1918 | } | |
1919 | ||
188a00e0 | 1920 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1921 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1922 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1923 | |
1924 | if (!CHECK_FLAG(nhlfe->flags, | |
1925 | NHLFE_FLAG_INSTALLED)) | |
1926 | changed_p = true; | |
104e3ad9 MS |
1927 | |
1928 | /* Update counter */ | |
1929 | end_count++; | |
188a00e0 MS |
1930 | } else { |
1931 | ||
1932 | if (CHECK_FLAG(nhlfe->flags, | |
1933 | NHLFE_FLAG_INSTALLED)) | |
1934 | changed_p = true; | |
1935 | } | |
1936 | ||
1937 | } else { | |
1938 | /* Not mentioned in lfib set -> uninstalled */ | |
1939 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1940 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1941 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1942 | changed_p = true; | |
1943 | } | |
1944 | ||
1945 | if (is_debug) | |
1946 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1947 | buf); | |
1948 | } | |
1949 | } | |
1950 | ||
68110c42 MS |
1951 | if (start_counter) |
1952 | *start_counter += start_count; | |
1953 | if (end_counter) | |
1954 | *end_counter += end_count; | |
188a00e0 | 1955 | |
68110c42 MS |
1956 | return changed_p; |
1957 | } | |
188a00e0 | 1958 | |
68110c42 MS |
1959 | /* |
1960 | * Update an lsp nhlfe list from a dplane context, typically an async | |
1961 | * notification context. Update the LSP list to match the installed | |
1962 | * status from the context's list. | |
1963 | */ | |
1964 | static int update_nhlfes_from_ctx(struct nhlfe_list_head *nhlfe_head, | |
1965 | const struct nhlfe_list_head *ctx_head) | |
1966 | { | |
1967 | int ret = 0; | |
f2595bd5 DS |
1968 | struct zebra_nhlfe *nhlfe; |
1969 | const struct zebra_nhlfe *ctx_nhlfe; | |
68110c42 MS |
1970 | struct nexthop *nexthop; |
1971 | const struct nexthop *ctx_nexthop; | |
1972 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
1973 | ||
1974 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { | |
188a00e0 MS |
1975 | char buf[NEXTHOP_STRLEN]; |
1976 | ||
1977 | nexthop = nhlfe->nexthop; | |
1978 | if (!nexthop) | |
1979 | continue; | |
1980 | ||
c3753405 | 1981 | ctx_nhlfe = NULL; |
188a00e0 | 1982 | ctx_nexthop = NULL; |
c3753405 | 1983 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
188a00e0 MS |
1984 | ctx_nexthop = ctx_nhlfe->nexthop; |
1985 | if (!ctx_nexthop) | |
1986 | continue; | |
1987 | ||
1988 | if ((ctx_nexthop->type == nexthop->type) && | |
1989 | nexthop_same(ctx_nexthop, nexthop)) { | |
1990 | /* Matched */ | |
1991 | break; | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | if (is_debug) | |
1996 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1997 | ||
1998 | if (ctx_nhlfe && ctx_nexthop) { | |
1999 | ||
2000 | /* Bring zebra nhlfe install state into sync */ | |
2001 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
2002 | NHLFE_FLAG_INSTALLED)) { | |
c3753405 MS |
2003 | if (is_debug) |
2004 | zlog_debug("%s: matched lsp nhlfe %s (installed)", | |
2005 | __func__, buf); | |
188a00e0 MS |
2006 | |
2007 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
00a9b150 | 2008 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 MS |
2009 | |
2010 | } else { | |
c3753405 MS |
2011 | if (is_debug) |
2012 | zlog_debug("%s: matched lsp nhlfe %s (not installed)", | |
2013 | __func__, buf); | |
188a00e0 | 2014 | |
104e3ad9 | 2015 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 2016 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 | 2017 | } |
104e3ad9 MS |
2018 | |
2019 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
2020 | NEXTHOP_FLAG_FIB)) { |
2021 | SET_FLAG(nhlfe->nexthop->flags, | |
2022 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2023 | SET_FLAG(nhlfe->nexthop->flags, |
2024 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2025 | } else { |
2026 | UNSET_FLAG(nhlfe->nexthop->flags, | |
2027 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2028 | UNSET_FLAG(nhlfe->nexthop->flags, |
2029 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2030 | } |
2031 | ||
104e3ad9 MS |
2032 | } else { |
2033 | /* Not mentioned in lfib set -> uninstalled */ | |
c3753405 MS |
2034 | if (is_debug) |
2035 | zlog_debug("%s: no match for lsp nhlfe %s", | |
2036 | __func__, buf); | |
104e3ad9 | 2037 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 2038 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
104e3ad9 | 2039 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
188a00e0 | 2040 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2041 | } |
2042 | } | |
2043 | ||
68110c42 MS |
2044 | return ret; |
2045 | } | |
2046 | ||
2047 | /* | |
2048 | * Process async dplane notifications. | |
2049 | */ | |
2050 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2051 | { | |
2052 | struct zebra_vrf *zvrf; | |
a7d2146a | 2053 | struct zebra_ile tmp_ile; |
68110c42 | 2054 | struct hash *lsp_table; |
8f74a383 | 2055 | struct zebra_lsp *lsp; |
68110c42 MS |
2056 | const struct nhlfe_list_head *ctx_list; |
2057 | int start_count = 0, end_count = 0; /* Installed counts */ | |
2058 | bool changed_p = false; | |
2059 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
8283551d | 2060 | enum zebra_sr_policy_update_label_mode update_mode; |
68110c42 MS |
2061 | |
2062 | if (is_debug) | |
2063 | zlog_debug("LSP dplane notif, in-label %u", | |
2064 | dplane_ctx_get_in_label(ctx)); | |
2065 | ||
2066 | /* Look for zebra LSP object */ | |
2067 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
2068 | if (zvrf == NULL) | |
2069 | goto done; | |
2070 | ||
2071 | lsp_table = zvrf->lsp_table; | |
2072 | ||
2073 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
2074 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2075 | if (lsp == NULL) { | |
2076 | if (is_debug) | |
2077 | zlog_debug("dplane LSP notif: in-label %u not found", | |
2078 | dplane_ctx_get_in_label(ctx)); | |
2079 | goto done; | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * The dataplane/forwarding plane is notifying zebra about the state | |
2084 | * of the nexthops associated with this LSP. First, we take a | |
2085 | * pre-scan pass to determine whether the LSP has transitioned | |
2086 | * from installed -> uninstalled. In that case, we need to have | |
2087 | * the existing state of the LSP objects available before making | |
2088 | * any changes. | |
2089 | */ | |
2090 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2091 | ||
2092 | changed_p = compare_notif_nhlfes(ctx_list, &lsp->nhlfe_list, | |
2093 | &start_count, &end_count); | |
2094 | ||
2095 | if (is_debug) | |
2096 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2097 | start_count, end_count, | |
2098 | changed_p ? ", changed" : ""); | |
2099 | ||
2100 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2101 | ||
2102 | if (compare_notif_nhlfes(ctx_list, &lsp->backup_nhlfe_list, | |
2103 | &start_count, &end_count)) | |
2104 | /* Avoid accidentally setting back to 'false' */ | |
2105 | changed_p = true; | |
2106 | ||
2107 | if (is_debug) | |
2108 | zlog_debug("LSP dplane notif: lfib backups, start_count %d, end_count %d%s", | |
2109 | start_count, end_count, | |
2110 | changed_p ? ", changed" : ""); | |
2111 | ||
2112 | /* | |
2113 | * Has the LSP become uninstalled? We need the existing state of the | |
2114 | * nexthops/nhlfes at this point so we know what to delete. | |
2115 | */ | |
2116 | if (start_count > 0 && end_count == 0) { | |
2117 | /* Inform other lfibs */ | |
2118 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2119 | } | |
2120 | ||
2121 | /* | |
2122 | * Now we take a second pass and bring the zebra | |
2123 | * nexthop state into sync with the forwarding-plane state. | |
2124 | */ | |
2125 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2126 | update_nhlfes_from_ctx(&lsp->nhlfe_list, ctx_list); | |
2127 | ||
2128 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2129 | update_nhlfes_from_ctx(&lsp->backup_nhlfe_list, ctx_list); | |
2130 | ||
188a00e0 | 2131 | if (end_count > 0) { |
104e3ad9 | 2132 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 | 2133 | |
8283551d MS |
2134 | /* SR-TE update too */ |
2135 | if (start_count == 0) | |
2136 | update_mode = ZEBRA_SR_POLICY_LABEL_CREATED; | |
2137 | else | |
2138 | update_mode = ZEBRA_SR_POLICY_LABEL_UPDATED; | |
2139 | zebra_sr_policy_label_update(lsp->ile.in_label, update_mode); | |
2140 | ||
188a00e0 MS |
2141 | if (changed_p) |
2142 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2143 | ||
2144 | } else { | |
8283551d MS |
2145 | /* SR-TE update too */ |
2146 | zebra_sr_policy_label_update(lsp->ile.in_label, | |
2147 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
2148 | ||
104e3ad9 MS |
2149 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2150 | clear_nhlfe_installed(lsp); | |
2151 | } | |
2152 | ||
2153 | done: | |
2154 | dplane_ctx_fini(&ctx); | |
2155 | } | |
2156 | ||
a64448ba DS |
2157 | /* |
2158 | * Install dynamic LSP entry. | |
2159 | */ | |
d62a17ae | 2160 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2161 | struct route_entry *re) | |
a64448ba | 2162 | { |
d62a17ae | 2163 | struct route_table *table; |
60e36561 | 2164 | struct zebra_fec *fec; |
a64448ba | 2165 | |
d62a17ae | 2166 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2167 | if (!table) | |
2168 | return -1; | |
a64448ba | 2169 | |
d62a17ae | 2170 | /* See if there is a configured label binding for this FEC. */ |
2171 | fec = fec_find(table, &rn->p); | |
2172 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2173 | return 0; | |
a64448ba | 2174 | |
d62a17ae | 2175 | /* We cannot install a label forwarding entry if local label is the |
2176 | * implicit-null label. | |
2177 | */ | |
70e98a7f | 2178 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2179 | return 0; |
a64448ba | 2180 | |
d62a17ae | 2181 | if (lsp_install(zvrf, fec->label, rn, re)) |
2182 | return -1; | |
a64448ba | 2183 | |
d62a17ae | 2184 | return 0; |
a64448ba DS |
2185 | } |
2186 | ||
2187 | /* | |
2188 | * Uninstall dynamic LSP entry, if any. | |
2189 | */ | |
d62a17ae | 2190 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2191 | struct route_entry *re) | |
a64448ba | 2192 | { |
d62a17ae | 2193 | struct route_table *table; |
60e36561 | 2194 | struct zebra_fec *fec; |
a64448ba | 2195 | |
d62a17ae | 2196 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2197 | if (!table) | |
2198 | return -1; | |
a64448ba | 2199 | |
d62a17ae | 2200 | /* See if there is a configured label binding for this FEC. */ |
2201 | fec = fec_find(table, &rn->p); | |
2202 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2203 | return 0; | |
a64448ba | 2204 | |
d62a17ae | 2205 | /* Uninstall always removes all dynamic NHLFEs. */ |
2206 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2207 | } |
2208 | ||
d4cb23d7 | 2209 | /* |
cd4bb96f MS |
2210 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2211 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 | 2212 | */ |
f2595bd5 | 2213 | struct zebra_nhlfe * |
8f74a383 | 2214 | zebra_mpls_lsp_add_nhlfe(struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
f2595bd5 DS |
2215 | enum nexthop_types_t gtype, const union g_addr *gate, |
2216 | ifindex_t ifindex, uint8_t num_labels, | |
2217 | const mpls_label_t *out_labels) | |
d4cb23d7 MS |
2218 | { |
2219 | /* Just a public pass-through to the internal implementation */ | |
5065db0a | 2220 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
cc1b9746 | 2221 | out_labels, false /*backup*/); |
d4cb23d7 MS |
2222 | } |
2223 | ||
cd4bb96f MS |
2224 | /* |
2225 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2226 | * This path only changes the LSP object - nothing is scheduled for | |
2227 | * processing, for example. | |
2228 | */ | |
f2595bd5 | 2229 | struct zebra_nhlfe *zebra_mpls_lsp_add_backup_nhlfe( |
8f74a383 DS |
2230 | struct zebra_lsp *lsp, enum lsp_types_t lsp_type, |
2231 | enum nexthop_types_t gtype, const union g_addr *gate, ifindex_t ifindex, | |
2232 | uint8_t num_labels, const mpls_label_t *out_labels) | |
cd4bb96f MS |
2233 | { |
2234 | /* Just a public pass-through to the internal implementation */ | |
cc1b9746 MS |
2235 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2236 | out_labels, true); | |
cd4bb96f MS |
2237 | } |
2238 | ||
2239 | /* | |
2240 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2241 | */ | |
8f74a383 | 2242 | struct zebra_nhlfe *zebra_mpls_lsp_add_nh(struct zebra_lsp *lsp, |
f2595bd5 DS |
2243 | enum lsp_types_t lsp_type, |
2244 | const struct nexthop *nh) | |
cd4bb96f | 2245 | { |
f2595bd5 | 2246 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
2247 | |
2248 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2249 | return NULL; | |
2250 | ||
2251 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
cc1b9746 MS |
2252 | nh->nh_label->num_labels, nh->nh_label->label, |
2253 | false /*backup*/); | |
cd4bb96f MS |
2254 | |
2255 | return nhlfe; | |
2256 | } | |
2257 | ||
2258 | /* | |
2259 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2260 | * return the newly-added object. | |
2261 | */ | |
8f74a383 | 2262 | struct zebra_nhlfe *zebra_mpls_lsp_add_backup_nh(struct zebra_lsp *lsp, |
f2595bd5 DS |
2263 | enum lsp_types_t lsp_type, |
2264 | const struct nexthop *nh) | |
cd4bb96f | 2265 | { |
f2595bd5 | 2266 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
2267 | |
2268 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2269 | return NULL; | |
2270 | ||
cc1b9746 | 2271 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, |
cd4bb96f | 2272 | nh->ifindex, nh->nh_label->num_labels, |
cc1b9746 | 2273 | nh->nh_label->label, true); |
cd4bb96f MS |
2274 | |
2275 | return nhlfe; | |
2276 | } | |
2277 | ||
d4cb23d7 MS |
2278 | /* |
2279 | * Free an allocated NHLFE | |
2280 | */ | |
f2595bd5 | 2281 | void zebra_mpls_nhlfe_free(struct zebra_nhlfe *nhlfe) |
d4cb23d7 MS |
2282 | { |
2283 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2284 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2285 | } |
2286 | ||
5aba114a DS |
2287 | /* |
2288 | * Registration from a client for the label binding for a FEC. If a binding | |
2289 | * already exists, it is informed to the client. | |
28d58fd7 | 2290 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2291 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2292 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2293 | * is acceptable. If no label index then just register the specified label. |
2294 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2295 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2296 | */ |
d62a17ae | 2297 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2298 | uint32_t label, uint32_t label_index, |
2299 | struct zserv *client) | |
d62a17ae | 2300 | { |
2301 | struct route_table *table; | |
60e36561 | 2302 | struct zebra_fec *fec; |
57592a53 AD |
2303 | bool new_client; |
2304 | bool label_change = false; | |
d7c0a89a | 2305 | uint32_t old_label; |
57592a53 AD |
2306 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2307 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2308 | |
2309 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2310 | if (!table) | |
2311 | return -1; | |
2312 | ||
57592a53 AD |
2313 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2314 | flog_err( | |
2315 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
b467b4b4 DS |
2316 | "Rejecting FEC register for %pFX with both label %u and Label Index %u specified, client %s", |
2317 | p, label, label_index, | |
57592a53 AD |
2318 | zebra_route_string(client->proto)); |
2319 | return -1; | |
2320 | } | |
2321 | ||
d62a17ae | 2322 | /* Locate FEC */ |
2323 | fec = fec_find(table, p); | |
2324 | if (!fec) { | |
57592a53 | 2325 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2326 | if (!fec) { |
af4c2728 | 2327 | flog_err( |
e914ccbe | 2328 | EC_ZEBRA_FEC_ADD_FAILED, |
b467b4b4 DS |
2329 | "Failed to add FEC %pFX upon register, client %s", |
2330 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2331 | return -1; |
2332 | } | |
2333 | ||
2334 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2335 | new_client = true; |
d62a17ae | 2336 | } else { |
57592a53 AD |
2337 | /* Check if the FEC has been statically defined in the config */ |
2338 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2339 | /* Client may register same FEC with different label index. */ |
2340 | new_client = | |
2341 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2342 | if (!new_client && fec->label_index == label_index |
2343 | && fec->label == label) | |
d62a17ae | 2344 | /* Duplicate register */ |
2345 | return 0; | |
2346 | ||
57592a53 | 2347 | /* Save current label, update the FEC */ |
d62a17ae | 2348 | old_label = fec->label; |
2349 | fec->label_index = label_index; | |
2350 | } | |
2351 | ||
2352 | if (new_client) | |
2353 | listnode_add(fec->client_list, client); | |
2354 | ||
2355 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2356 | zlog_debug("FEC %pFX label%s %u %s by client %s%s", p, |
57592a53 AD |
2357 | have_label_index ? " index" : "", |
2358 | have_label_index ? label_index : label, | |
2359 | new_client ? "registered" : "updated", | |
2360 | zebra_route_string(client->proto), | |
2361 | is_configured_fec | |
2362 | ? ", but using statically configured label" | |
2363 | : ""); | |
2364 | ||
2365 | /* If not a statically configured FEC, derive the local label | |
2366 | * from label index or use the provided label | |
d62a17ae | 2367 | */ |
57592a53 AD |
2368 | if (!is_configured_fec) { |
2369 | if (have_label_index) | |
2370 | fec_derive_label_from_index(zvrf, fec); | |
2371 | else | |
2372 | fec->label = label; | |
d62a17ae | 2373 | |
2374 | /* If no label change, exit. */ | |
2375 | if (fec->label == old_label) | |
2376 | return 0; | |
2377 | ||
57592a53 | 2378 | label_change = true; |
d62a17ae | 2379 | } |
2380 | ||
2381 | /* If new client or label change, update client and install or uninstall | |
2382 | * label forwarding entry as needed. | |
2383 | */ | |
2384 | /* Inform client of label, if needed. */ | |
2385 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2386 | if (IS_ZEBRA_DEBUG_MPLS) | |
2387 | zlog_debug("Update client label %u", fec->label); | |
2388 | fec_send(fec, client); | |
2389 | } | |
2390 | ||
2391 | if (new_client || label_change) | |
2392 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2393 | ||
2394 | return 0; | |
5aba114a DS |
2395 | } |
2396 | ||
2397 | /* | |
2398 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2399 | * itself is deleted if no other registered clients exist and there is no | |
2400 | * label bound to the FEC. | |
2401 | */ | |
d62a17ae | 2402 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2403 | struct zserv *client) | |
5aba114a | 2404 | { |
d62a17ae | 2405 | struct route_table *table; |
60e36561 | 2406 | struct zebra_fec *fec; |
5aba114a | 2407 | |
d62a17ae | 2408 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2409 | if (!table) | |
2410 | return -1; | |
5aba114a | 2411 | |
d62a17ae | 2412 | fec = fec_find(table, p); |
2413 | if (!fec) { | |
e914ccbe | 2414 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
2dbe669b DA |
2415 | "Failed to find FEC %pFX upon unregister, client %s", |
2416 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2417 | return -1; |
2418 | } | |
5aba114a | 2419 | |
d62a17ae | 2420 | listnode_delete(fec->client_list, client); |
2421 | ||
2422 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2423 | zlog_debug("FEC %pFX unregistered by client %s", p, |
d62a17ae | 2424 | zebra_route_string(client->proto)); |
2425 | ||
2426 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2427 | * deleting, see if any LSP needs to be uninstalled. | |
2428 | */ | |
2429 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2430 | && list_isempty(fec->client_list)) { | |
2431 | mpls_label_t old_label = fec->label; | |
2432 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2433 | fec_change_update_lsp(zvrf, fec, old_label); | |
2434 | fec_del(fec); | |
2435 | } | |
5aba114a | 2436 | |
d62a17ae | 2437 | return 0; |
5aba114a DS |
2438 | } |
2439 | ||
2440 | /* | |
2441 | * Cleanup any FECs registered by this client. | |
2442 | */ | |
453844ab | 2443 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2444 | { |
453844ab | 2445 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2446 | struct route_node *rn; |
60e36561 | 2447 | struct zebra_fec *fec; |
d62a17ae | 2448 | struct listnode *node; |
2449 | struct zserv *fec_client; | |
2450 | int af; | |
2451 | ||
2452 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2453 | if (zvrf->fec_table[af] == NULL) | |
2454 | continue; | |
2455 | ||
2456 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2457 | rn = route_next(rn)) { | |
2458 | fec = rn->info; | |
2459 | if (!fec || list_isempty(fec->client_list)) | |
2460 | continue; | |
2461 | ||
2462 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2463 | fec_client)) { | |
2464 | if (fec_client == client) { | |
2465 | listnode_delete(fec->client_list, | |
2466 | fec_client); | |
2467 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2468 | && list_isempty(fec->client_list)) | |
2469 | fec_del(fec); | |
2470 | break; | |
2471 | } | |
2472 | } | |
2473 | } | |
2474 | } | |
5aba114a | 2475 | |
d62a17ae | 2476 | return 0; |
5aba114a DS |
2477 | } |
2478 | ||
651105b5 RW |
2479 | struct lsp_uninstall_args { |
2480 | struct hash *lsp_table; | |
2481 | enum lsp_types_t type; | |
2482 | }; | |
2483 | ||
2484 | /* | |
2485 | * Cleanup MPLS labels registered by this client. | |
2486 | */ | |
2487 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2488 | { | |
2489 | struct vrf *vrf; | |
2490 | struct zebra_vrf *zvrf; | |
2491 | ||
2492 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2493 | struct lsp_uninstall_args args; | |
2494 | ||
2495 | zvrf = vrf->info; | |
2496 | if (!zvrf) | |
2497 | continue; | |
2498 | ||
2499 | /* Cleanup LSPs. */ | |
2500 | args.lsp_table = zvrf->lsp_table; | |
2501 | args.type = lsp_type_from_re_type(client->proto); | |
2502 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2503 | &args); | |
2504 | ||
2505 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2506 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2507 | lsp_type_from_re_type(client->proto)); | |
2508 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2509 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2510 | } |
2511 | ||
2512 | return 0; | |
2513 | } | |
2514 | ||
f31e084c DS |
2515 | /* |
2516 | * Return FEC (if any) to which this label is bound. | |
2517 | * Note: Only works for per-prefix binding and when the label is not | |
2518 | * implicit-null. | |
2519 | * TODO: Currently walks entire table, can optimize later with another | |
2520 | * hash.. | |
2521 | */ | |
60e36561 DS |
2522 | struct zebra_fec *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2523 | mpls_label_t label) | |
d62a17ae | 2524 | { |
2525 | struct route_node *rn; | |
60e36561 | 2526 | struct zebra_fec *fec; |
d62a17ae | 2527 | int af; |
2528 | ||
2529 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2530 | if (zvrf->fec_table[af] == NULL) | |
2531 | continue; | |
2532 | ||
2533 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2534 | rn = route_next(rn)) { | |
2535 | if (!rn->info) | |
2536 | continue; | |
2537 | fec = rn->info; | |
2538 | if (fec->label == label) | |
2539 | return fec; | |
2540 | } | |
2541 | } | |
f31e084c | 2542 | |
d62a17ae | 2543 | return NULL; |
f31e084c DS |
2544 | } |
2545 | ||
2546 | /* | |
2547 | * Inform if specified label is currently bound to a FEC or not. | |
2548 | */ | |
d62a17ae | 2549 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2550 | { |
d62a17ae | 2551 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2552 | } |
2553 | ||
2554 | /* | |
5aba114a | 2555 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2556 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2557 | * label forwarding entry. | |
9d303b37 | 2558 | */ |
d62a17ae | 2559 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2560 | mpls_label_t in_label) | |
2561 | { | |
2562 | struct route_table *table; | |
60e36561 | 2563 | struct zebra_fec *fec; |
d62a17ae | 2564 | mpls_label_t old_label; |
2565 | int ret = 0; | |
2566 | ||
2567 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2568 | if (!table) | |
2569 | return -1; | |
2570 | ||
d62a17ae | 2571 | /* Update existing FEC or create a new one. */ |
2572 | fec = fec_find(table, p); | |
2573 | if (!fec) { | |
2574 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2575 | MPLS_INVALID_LABEL_INDEX); | |
2576 | if (!fec) { | |
e914ccbe | 2577 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
2dbe669b | 2578 | "Failed to add FEC %pFX upon config", p); |
d62a17ae | 2579 | return -1; |
2580 | } | |
2581 | ||
2582 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2583 | zlog_debug("Add fec %pFX label %u", p, in_label); |
d62a17ae | 2584 | } else { |
2585 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2586 | if (fec->label == in_label) | |
2587 | /* Duplicate config */ | |
2588 | return 0; | |
2589 | ||
2590 | /* Label change, update clients. */ | |
2591 | old_label = fec->label; | |
2592 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2593 | zlog_debug("Update fec %pFX new label %u", p, in_label); |
d62a17ae | 2594 | |
2595 | fec->label = in_label; | |
2596 | fec_update_clients(fec); | |
2597 | ||
2598 | /* Update label forwarding entries appropriately */ | |
2599 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2600 | } | |
2601 | ||
2602 | return ret; | |
f31e084c DS |
2603 | } |
2604 | ||
2605 | /* | |
5aba114a DS |
2606 | * Remove static FEC to label binding. If there are no clients registered |
2607 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2608 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2609 | * client may need to be updated with derived label. | |
f31e084c | 2610 | */ |
d62a17ae | 2611 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2612 | { | |
2613 | struct route_table *table; | |
60e36561 | 2614 | struct zebra_fec *fec; |
d62a17ae | 2615 | mpls_label_t old_label; |
d62a17ae | 2616 | |
2617 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2618 | if (!table) | |
2619 | return -1; | |
2620 | ||
2621 | fec = fec_find(table, p); | |
2622 | if (!fec) { | |
e914ccbe | 2623 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
b467b4b4 | 2624 | "Failed to find FEC %pFX upon delete", p); |
d62a17ae | 2625 | return -1; |
2626 | } | |
2627 | ||
2628 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2dbe669b | 2629 | zlog_debug("Delete fec %pFX label %u label index %u", p, |
57592a53 | 2630 | fec->label, fec->label_index); |
d62a17ae | 2631 | } |
2632 | ||
2633 | old_label = fec->label; | |
2634 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2635 | fec->label = MPLS_INVALID_LABEL; | |
2636 | ||
2637 | /* If no client exists, just delete the FEC. */ | |
2638 | if (list_isempty(fec->client_list)) { | |
2639 | fec_del(fec); | |
2640 | return 0; | |
2641 | } | |
2642 | ||
2643 | /* Derive the local label (from label index) or reset it. */ | |
2644 | fec_derive_label_from_index(zvrf, fec); | |
2645 | ||
2646 | /* If there is a label change, update clients. */ | |
2647 | if (fec->label == old_label) | |
2648 | return 0; | |
2649 | fec_update_clients(fec); | |
2650 | ||
2651 | /* Update label forwarding entries appropriately */ | |
2652 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2653 | } |
2654 | ||
2655 | /* | |
2656 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2657 | */ | |
d62a17ae | 2658 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2659 | { |
d62a17ae | 2660 | struct route_node *rn; |
2661 | int af; | |
60e36561 | 2662 | struct zebra_fec *fec; |
d62a17ae | 2663 | int write = 0; |
f31e084c | 2664 | |
d62a17ae | 2665 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2666 | if (zvrf->fec_table[af] == NULL) | |
2667 | continue; | |
f31e084c | 2668 | |
d62a17ae | 2669 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2670 | rn = route_next(rn)) { | |
2671 | if (!rn->info) | |
2672 | continue; | |
f31e084c | 2673 | |
d62a17ae | 2674 | char lstr[BUFSIZ]; |
2675 | fec = rn->info; | |
f31e084c | 2676 | |
d62a17ae | 2677 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2678 | continue; | |
f31e084c | 2679 | |
d62a17ae | 2680 | write = 1; |
2dbe669b | 2681 | vty_out(vty, "mpls label bind %pFX %s\n", &rn->p, |
d62a17ae | 2682 | label2str(fec->label, lstr, BUFSIZ)); |
2683 | } | |
2684 | } | |
f31e084c | 2685 | |
d62a17ae | 2686 | return write; |
f31e084c DS |
2687 | } |
2688 | ||
2689 | /* | |
2690 | * Display MPLS FEC to label binding (VTY command handler). | |
2691 | */ | |
d62a17ae | 2692 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2693 | { |
d62a17ae | 2694 | struct route_node *rn; |
2695 | int af; | |
f31e084c | 2696 | |
d62a17ae | 2697 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2698 | if (zvrf->fec_table[af] == NULL) | |
2699 | continue; | |
f31e084c | 2700 | |
d62a17ae | 2701 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2702 | rn = route_next(rn)) { | |
2703 | if (!rn->info) | |
2704 | continue; | |
2705 | fec_print(rn->info, vty); | |
2706 | } | |
2707 | } | |
f31e084c DS |
2708 | } |
2709 | ||
2710 | /* | |
2711 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2712 | */ | |
d62a17ae | 2713 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2714 | struct prefix *p) | |
f31e084c | 2715 | { |
d62a17ae | 2716 | struct route_table *table; |
2717 | struct route_node *rn; | |
f31e084c | 2718 | |
d62a17ae | 2719 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2720 | if (!table) | |
2721 | return; | |
f31e084c | 2722 | |
d62a17ae | 2723 | apply_mask(p); |
2724 | rn = route_node_lookup(table, p); | |
2725 | if (!rn) | |
2726 | return; | |
f31e084c | 2727 | |
d62a17ae | 2728 | route_unlock_node(rn); |
2729 | if (!rn->info) | |
2730 | return; | |
f31e084c | 2731 | |
d62a17ae | 2732 | fec_print(rn->info, vty); |
f31e084c DS |
2733 | } |
2734 | ||
f2e7f4eb MS |
2735 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2736 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2737 | { |
2738 | struct nhg_hash_entry *nhe; | |
2739 | ||
f2e7f4eb | 2740 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2741 | |
5463ce26 | 2742 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2743 | } |
2744 | ||
f2e7f4eb MS |
2745 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2746 | enum lsp_types_t type, | |
2747 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2748 | { |
f2e7f4eb MS |
2749 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2750 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2751 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2752 | nexthop_del_labels(nexthop); |
2753 | else | |
2754 | return false; | |
2755 | ||
2756 | return true; | |
2757 | } | |
2758 | ||
f2e7f4eb MS |
2759 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2760 | struct prefix *prefix, uint8_t route_type, | |
2761 | unsigned short route_instance) | |
d62a17ae | 2762 | { |
2763 | struct route_table *table; | |
2764 | struct route_node *rn; | |
2765 | struct route_entry *re; | |
2766 | struct nexthop *nexthop; | |
f2e7f4eb | 2767 | struct nhg_hash_entry *new_nhe; |
da137142 | 2768 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2769 | |
2770 | /* Lookup table. */ | |
da137142 | 2771 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2772 | if (!table) |
2773 | return -1; | |
2774 | ||
2775 | /* Lookup existing route */ | |
2776 | rn = route_node_get(table, prefix); | |
a2addae8 | 2777 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2778 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2779 | continue; | |
e132dea0 | 2780 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2781 | break; |
88d88a9c | 2782 | } |
d62a17ae | 2783 | if (re == NULL) |
2784 | return -1; | |
2785 | ||
da137142 | 2786 | /* |
f2e7f4eb MS |
2787 | * Nexthops are now shared by multiple routes, so we have to make |
2788 | * a local copy, modify the copy, then update the route. | |
da137142 | 2789 | */ |
f2e7f4eb | 2790 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2791 | |
f2e7f4eb MS |
2792 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2793 | nexthop_del_labels(nexthop); | |
2794 | ||
2795 | /* Update backup routes/nexthops also, if present. */ | |
2796 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2797 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2798 | nexthop = nexthop->next) | |
2799 | nexthop_del_labels(nexthop); | |
2800 | } | |
2801 | ||
2802 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2803 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2804 | ||
68110c42 MS |
2805 | /* This will create (or ref) a new nhe, so we will discard the local |
2806 | * temporary nhe | |
2807 | */ | |
f2e7f4eb MS |
2808 | mpls_zebra_nhe_update(re, afi, new_nhe); |
2809 | ||
2810 | zebra_nhg_free(new_nhe); | |
2811 | ||
2812 | rib_queue_add(rn); | |
2813 | ||
2814 | return 0; | |
2815 | } | |
2816 | ||
2817 | /* | |
2818 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2819 | * update its labels according to 'add_p', and return 'true' if successful. | |
2820 | */ | |
2821 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2822 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2823 | { | |
2824 | bool found = false, success = false; | |
2825 | struct nexthop *nexthop; | |
2826 | ||
2827 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2828 | switch (nexthop->type) { |
2829 | case NEXTHOP_TYPE_IPV4: | |
2830 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2831 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2832 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2833 | continue; |
f2e7f4eb MS |
2834 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2835 | &znh->gate.ipv4)) | |
d62a17ae | 2836 | continue; |
2837 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2838 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2839 | continue; |
f2e7f4eb | 2840 | |
8f77d0ee | 2841 | found = true; |
f2e7f4eb MS |
2842 | |
2843 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2844 | break; | |
2845 | ||
2846 | success = true; | |
8f77d0ee | 2847 | break; |
d62a17ae | 2848 | case NEXTHOP_TYPE_IPV6: |
2849 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2850 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2851 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2852 | continue; |
f2e7f4eb MS |
2853 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2854 | &znh->gate.ipv6)) | |
d62a17ae | 2855 | continue; |
2856 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2857 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2858 | continue; |
f2e7f4eb | 2859 | |
8f77d0ee | 2860 | found = true; |
f2e7f4eb MS |
2861 | |
2862 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2863 | break; | |
2864 | success = true; | |
8f77d0ee | 2865 | break; |
10cc80ca | 2866 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
2867 | if (znh->type != NEXTHOP_TYPE_IFINDEX) |
2868 | continue; | |
2869 | if (nexthop->ifindex != znh->ifindex) | |
2870 | continue; | |
2871 | ||
2872 | found = true; | |
2873 | ||
2874 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2875 | break; | |
2876 | success = true; | |
d62a17ae | 2877 | break; |
a44e3106 MS |
2878 | case NEXTHOP_TYPE_BLACKHOLE: |
2879 | /* Not valid */ | |
2880 | continue; | |
d62a17ae | 2881 | } |
f2e7f4eb MS |
2882 | |
2883 | if (found) | |
2884 | break; | |
d62a17ae | 2885 | } |
d62a17ae | 2886 | |
f2e7f4eb MS |
2887 | return success; |
2888 | } | |
19474c9c | 2889 | |
f2e7f4eb MS |
2890 | /* |
2891 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2892 | * using zapi message info. | |
2893 | * There are several changes that need to be made, in several zebra | |
2894 | * data structures, so we want to do all the work required at once. | |
2895 | */ | |
2896 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2897 | const struct zapi_labels *zl) | |
2898 | { | |
2899 | int i, counter, ret = 0; | |
2dbe669b | 2900 | char buf[NEXTHOP_STRLEN]; |
f2e7f4eb MS |
2901 | const struct zapi_nexthop *znh; |
2902 | struct route_table *table; | |
2903 | struct route_node *rn = NULL; | |
2904 | struct route_entry *re = NULL; | |
2905 | struct nhg_hash_entry *new_nhe = NULL; | |
2906 | bool found; | |
2907 | afi_t afi = AFI_IP; | |
2908 | const struct prefix *prefix = NULL; | |
2909 | struct hash *lsp_table; | |
a7d2146a | 2910 | struct zebra_ile tmp_ile; |
8f74a383 | 2911 | struct zebra_lsp *lsp = NULL; |
19474c9c | 2912 | |
f2e7f4eb MS |
2913 | /* Prep LSP for add case */ |
2914 | if (add_p) { | |
2915 | /* Lookup table. */ | |
2916 | lsp_table = zvrf->lsp_table; | |
2917 | if (!lsp_table) | |
2918 | return -1; | |
2919 | ||
2920 | /* Find or create LSP object */ | |
2921 | tmp_ile.in_label = zl->local_label; | |
2922 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2923 | if (!lsp) | |
2924 | return -1; | |
da137142 SW |
2925 | } |
2926 | ||
f2e7f4eb MS |
2927 | /* Prep for route/FEC update if requested */ |
2928 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2929 | prefix = &zl->route.prefix; | |
da137142 | 2930 | |
f2e7f4eb | 2931 | afi = family2afi(prefix->family); |
ce549947 | 2932 | |
f2e7f4eb MS |
2933 | /* Lookup table. */ |
2934 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2935 | if (table) { | |
2936 | /* Lookup existing route */ | |
2937 | rn = route_node_get(table, prefix); | |
2938 | RNODE_FOREACH_RE(rn, re) { | |
2939 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2940 | continue; | |
2941 | if (re->type == zl->route.type && | |
2942 | re->instance == zl->route.instance) | |
2943 | break; | |
2944 | } | |
2945 | } | |
ea6b290b | 2946 | |
f2e7f4eb MS |
2947 | if (re) { |
2948 | /* | |
2949 | * Copy over current nexthops into a temporary group. | |
2950 | * We can't just change the values here since the nhgs | |
2951 | * are shared and if the labels change, we'll need | |
2952 | * to find or create a new nhg. We need to create | |
2953 | * a whole temporary group, make changes to it, | |
2954 | * then attach that to the route. | |
2955 | */ | |
2956 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2957 | |
f2e7f4eb MS |
2958 | } else { |
2959 | /* | |
2960 | * The old version of the zapi code | |
2961 | * attempted to manage LSPs before trying to | |
2962 | * find a route/FEC, so we'll continue that way. | |
2963 | */ | |
2dbe669b DA |
2964 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) |
2965 | zlog_debug( | |
2966 | "%s: FTN update requested: no route for prefix %pFX", | |
2967 | __func__, prefix); | |
f2e7f4eb MS |
2968 | } |
2969 | } | |
2970 | ||
2971 | /* | |
2972 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2973 | */ | |
2974 | ||
2975 | counter = 0; | |
2976 | for (i = 0; i < zl->nexthop_num; i++) { | |
2977 | ||
2978 | znh = &zl->nexthops[i]; | |
2979 | ||
2980 | /* Attempt LSP update */ | |
2981 | if (add_p) | |
2982 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2983 | else | |
2984 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2985 | zl->local_label, znh->type, | |
cc1b9746 MS |
2986 | &znh->gate, znh->ifindex, |
2987 | false); | |
f2e7f4eb MS |
2988 | if (ret < 0) { |
2989 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2990 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2991 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
2992 | __func__, (add_p ? "" : "un"), | |
2993 | zl->local_label, buf); | |
2994 | } | |
ea6b290b | 2995 | continue; |
f2e7f4eb MS |
2996 | } |
2997 | ||
2998 | /* Attempt route/FEC update if requested */ | |
2999 | if (re == NULL) | |
3000 | continue; | |
3001 | ||
3002 | /* Search the route's nexthops for a match, and update it. */ | |
3003 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
3004 | znh); | |
3005 | if (found) { | |
3006 | counter++; | |
3007 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3008 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3009 | zlog_debug( |
3010 | "%s: Unable to update FEC: prefix %pFX, label %u, znh %s", | |
3011 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb | 3012 | } |
ea6b290b | 3013 | } |
ea6b290b | 3014 | |
f2e7f4eb MS |
3015 | /* |
3016 | * Process backup LSPs/nexthop entries also. We associate backup | |
3017 | * LSP info with backup nexthops. | |
3018 | */ | |
3019 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
3020 | goto znh_done; | |
19474c9c | 3021 | |
f2e7f4eb | 3022 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 3023 | |
f2e7f4eb | 3024 | znh = &zl->backup_nexthops[i]; |
19474c9c | 3025 | |
f2e7f4eb MS |
3026 | if (add_p) |
3027 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
3028 | else | |
cc1b9746 MS |
3029 | ret = mpls_lsp_uninstall(zvrf, zl->type, |
3030 | zl->local_label, | |
3031 | znh->type, &znh->gate, | |
3032 | znh->ifindex, true); | |
f2e7f4eb MS |
3033 | |
3034 | if (ret < 0) { | |
3035 | if (IS_ZEBRA_DEBUG_RECV || | |
3036 | IS_ZEBRA_DEBUG_MPLS) { | |
3037 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3038 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
3039 | __func__, (add_p ? "" : "un"), | |
3040 | zl->local_label, buf); | |
3041 | } | |
3042 | continue; | |
3043 | } | |
19474c9c | 3044 | |
f2e7f4eb MS |
3045 | /* Attempt backup nexthop/FEC update if requested */ |
3046 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
3047 | continue; | |
19474c9c | 3048 | |
f2e7f4eb MS |
3049 | /* Search the route's backup nexthops for a match |
3050 | * and update it. | |
3051 | */ | |
3052 | found = ftn_update_znh(add_p, zl->type, | |
3053 | new_nhe->backup_info->nhe->nhg.nexthop, | |
3054 | znh); | |
3055 | if (found) { | |
3056 | counter++; | |
3057 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3058 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3059 | zlog_debug( |
3060 | "%s: Unable to update backup FEC: prefix %pFX, label %u, znh %s", | |
3061 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb MS |
3062 | } |
3063 | } | |
ea6b290b | 3064 | |
f2e7f4eb MS |
3065 | znh_done: |
3066 | ||
3067 | /* | |
3068 | * If we made changes, update the route, and schedule it | |
3069 | * for rib processing | |
3070 | */ | |
3071 | if (re != NULL && counter > 0) { | |
3072 | assert(rn != NULL); | |
3073 | ||
3074 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3075 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3076 | ||
3077 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3078 | ||
3079 | rib_queue_add(rn); | |
3080 | } | |
3081 | ||
3082 | if (new_nhe) | |
3083 | zebra_nhg_free(new_nhe); | |
3084 | ||
3085 | return ret; | |
ea6b290b RW |
3086 | } |
3087 | ||
ce549947 RW |
3088 | /* |
3089 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3090 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3091 | * the out-label for an existing NHLFE (update case). | |
3092 | */ | |
f2595bd5 | 3093 | static struct zebra_nhlfe * |
8f74a383 DS |
3094 | lsp_add_nhlfe(struct zebra_lsp *lsp, enum lsp_types_t type, |
3095 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3096 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3097 | ifindex_t ifindex, bool is_backup) | |
d62a17ae | 3098 | { |
f2595bd5 | 3099 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3100 | char buf[MPLS_LABEL_STRLEN]; |
cc1b9746 | 3101 | const char *backup_str; |
e4a1ec74 | 3102 | |
cc1b9746 MS |
3103 | if (is_backup) { |
3104 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3105 | gate, ifindex); | |
3106 | backup_str = "backup "; | |
d62a17ae | 3107 | } else { |
cc1b9746 MS |
3108 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, |
3109 | ifindex); | |
3110 | backup_str = ""; | |
d62a17ae | 3111 | } |
3112 | ||
cd4bb96f MS |
3113 | if (nhlfe) { |
3114 | struct nexthop *nh = nhlfe->nexthop; | |
3115 | ||
3116 | assert(nh); | |
3117 | assert(nh->nh_label); | |
3118 | ||
3119 | /* Clear deleted flag (in case it was set) */ | |
3120 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3121 | if (nh->nh_label->num_labels == num_out_labels | |
3122 | && !memcmp(nh->nh_label->label, out_labels, | |
3123 | sizeof(mpls_label_t) * num_out_labels)) | |
3124 | /* No change */ | |
3125 | return nhlfe; | |
3126 | ||
3127 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3128 | char buf2[MPLS_LABEL_STRLEN]; | |
3129 | char buf3[MPLS_LABEL_STRLEN]; | |
3130 | ||
3131 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3132 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3133 | sizeof(buf2), 0); | |
3134 | mpls_label2str(nh->nh_label->num_labels, | |
3135 | nh->nh_label->label, buf3, sizeof(buf3), | |
3136 | 0); | |
3137 | ||
cc1b9746 MS |
3138 | zlog_debug("LSP in-label %u type %d %snexthop %s out-label(s) changed to %s (old %s)", |
3139 | lsp->ile.in_label, type, backup_str, buf, | |
3140 | buf2, buf3); | |
cd4bb96f MS |
3141 | } |
3142 | ||
3143 | /* Update out label(s), trigger processing. */ | |
3144 | if (nh->nh_label->num_labels == num_out_labels) | |
3145 | memcpy(nh->nh_label->label, out_labels, | |
3146 | sizeof(mpls_label_t) * num_out_labels); | |
3147 | else { | |
3148 | nexthop_del_labels(nh); | |
3149 | nexthop_add_labels(nh, type, num_out_labels, | |
3150 | out_labels); | |
3151 | } | |
3152 | } else { | |
3153 | /* Add LSP entry to this nexthop */ | |
cc1b9746 MS |
3154 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3155 | num_out_labels, out_labels, is_backup); | |
cd4bb96f MS |
3156 | if (!nhlfe) |
3157 | return NULL; | |
3158 | ||
3159 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3160 | char buf2[MPLS_LABEL_STRLEN]; | |
3161 | ||
3162 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3163 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3164 | sizeof(buf2), 0); | |
3165 | ||
cc1b9746 MS |
3166 | zlog_debug("Add LSP in-label %u type %d %snexthop %s out-label(s) %s", |
3167 | lsp->ile.in_label, type, backup_str, buf, | |
3168 | buf2); | |
cd4bb96f MS |
3169 | } |
3170 | ||
3171 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3172 | } | |
3173 | ||
3174 | /* Mark NHLFE, queue LSP for processing. */ | |
3175 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3176 | ||
3177 | return nhlfe; | |
3178 | } | |
3179 | ||
3180 | /* | |
3181 | * Install an LSP and forwarding entry; used primarily | |
301a687a | 3182 | * from vrf zapi message processing. |
cd4bb96f MS |
3183 | */ |
3184 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3185 | mpls_label_t in_label, uint8_t num_out_labels, | |
3186 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3187 | const union g_addr *gate, ifindex_t ifindex) | |
3188 | { | |
3189 | struct hash *lsp_table; | |
a7d2146a | 3190 | struct zebra_ile tmp_ile; |
8f74a383 | 3191 | struct zebra_lsp *lsp; |
f2595bd5 | 3192 | struct zebra_nhlfe *nhlfe; |
cd4bb96f MS |
3193 | |
3194 | /* Lookup table. */ | |
3195 | lsp_table = zvrf->lsp_table; | |
3196 | if (!lsp_table) | |
3197 | return -1; | |
3198 | ||
3199 | /* Find or create LSP object */ | |
3200 | tmp_ile.in_label = in_label; | |
3201 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3202 | if (!lsp) | |
3203 | return -1; | |
3204 | ||
3205 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
cc1b9746 | 3206 | gate, ifindex, false /*backup*/); |
cd4bb96f MS |
3207 | if (nhlfe == NULL) |
3208 | return -1; | |
3209 | ||
3210 | /* Queue LSP for processing. */ | |
3211 | if (lsp_processq_add(lsp)) | |
3212 | return -1; | |
3213 | ||
3214 | return 0; | |
3215 | } | |
3216 | ||
3217 | /* | |
3218 | * Install or replace NHLFE, using info from zapi nexthop | |
3219 | */ | |
8f74a383 | 3220 | static int lsp_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 3221 | const struct zapi_nexthop *znh) |
cd4bb96f | 3222 | { |
f2595bd5 | 3223 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3224 | |
cd4bb96f | 3225 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
cc1b9746 MS |
3226 | znh->type, &znh->gate, znh->ifindex, |
3227 | false /*backup*/); | |
cd4bb96f MS |
3228 | if (nhlfe == NULL) |
3229 | return -1; | |
3230 | ||
3231 | /* Update backup info if present */ | |
3232 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3233 | if (znh->backup_num > NEXTHOP_MAX_BACKUPS) { |
3234 | nhlfe_del(nhlfe); | |
3235 | return -1; | |
3236 | } | |
3237 | ||
3238 | nhlfe->nexthop->backup_num = znh->backup_num; | |
3239 | memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx, | |
3240 | znh->backup_num); | |
cd4bb96f | 3241 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); |
301a687a MS |
3242 | } else { |
3243 | /* Ensure there's no stale backup info */ | |
3244 | UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3245 | nhlfe->nexthop->backup_num = 0; | |
cd4bb96f MS |
3246 | } |
3247 | ||
3248 | /* Queue LSP for processing. */ | |
3249 | if (lsp_processq_add(lsp)) | |
3250 | return -1; | |
3251 | ||
3252 | return 0; | |
3253 | } | |
3254 | ||
3255 | /* | |
3256 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3257 | */ | |
8f74a383 | 3258 | static int lsp_backup_znh_install(struct zebra_lsp *lsp, enum lsp_types_t type, |
f2e7f4eb | 3259 | const struct zapi_nexthop *znh) |
cd4bb96f | 3260 | { |
f2595bd5 | 3261 | struct zebra_nhlfe *nhlfe; |
cd4bb96f | 3262 | |
cc1b9746 MS |
3263 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, |
3264 | znh->labels, znh->type, &znh->gate, | |
3265 | znh->ifindex, true /*backup*/); | |
cd4bb96f MS |
3266 | if (nhlfe == NULL) { |
3267 | if (IS_ZEBRA_DEBUG_MPLS) | |
3268 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3269 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3270 | return -1; |
3271 | } | |
3272 | ||
3273 | /* Queue LSP for processing. */ | |
d62a17ae | 3274 | if (lsp_processq_add(lsp)) |
3275 | return -1; | |
3276 | ||
3277 | return 0; | |
ce549947 RW |
3278 | } |
3279 | ||
8f74a383 | 3280 | struct zebra_lsp *mpls_lsp_find(struct zebra_vrf *zvrf, mpls_label_t in_label) |
31f937fb SM |
3281 | { |
3282 | struct hash *lsp_table; | |
a7d2146a | 3283 | struct zebra_ile tmp_ile; |
31f937fb SM |
3284 | |
3285 | /* Lookup table. */ | |
3286 | lsp_table = zvrf->lsp_table; | |
3287 | if (!lsp_table) | |
3288 | return NULL; | |
3289 | ||
3290 | /* If entry is not present, exit. */ | |
3291 | tmp_ile.in_label = in_label; | |
3292 | return hash_lookup(lsp_table, &tmp_ile); | |
3293 | } | |
3294 | ||
ce549947 RW |
3295 | /* |
3296 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3297 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3298 | */ | |
d62a17ae | 3299 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3300 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
cc1b9746 MS |
3301 | const union g_addr *gate, ifindex_t ifindex, |
3302 | bool backup_p) | |
d62a17ae | 3303 | { |
3304 | struct hash *lsp_table; | |
a7d2146a | 3305 | struct zebra_ile tmp_ile; |
8f74a383 | 3306 | struct zebra_lsp *lsp; |
f2595bd5 | 3307 | struct zebra_nhlfe *nhlfe; |
cc1b9746 | 3308 | char buf[NEXTHOP_STRLEN]; |
4a2a5236 | 3309 | bool schedule_lsp = false; |
d62a17ae | 3310 | |
3311 | /* Lookup table. */ | |
3312 | lsp_table = zvrf->lsp_table; | |
3313 | if (!lsp_table) | |
3314 | return -1; | |
3315 | ||
3316 | /* If entry is not present, exit. */ | |
3317 | tmp_ile.in_label = in_label; | |
3318 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3319 | if (!lsp) | |
3320 | return 0; | |
cc1b9746 MS |
3321 | |
3322 | if (backup_p) | |
3323 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3324 | gate, ifindex); | |
3325 | else | |
3326 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, | |
3327 | ifindex); | |
d62a17ae | 3328 | if (!nhlfe) |
3329 | return 0; | |
3330 | ||
3331 | if (IS_ZEBRA_DEBUG_MPLS) { | |
43a9f66c | 3332 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3333 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", |
3334 | in_label, type, buf, nhlfe->flags); | |
3335 | } | |
3336 | ||
4a2a5236 MS |
3337 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) || |
3338 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) | |
3339 | schedule_lsp = true; | |
3340 | ||
d62a17ae | 3341 | /* Mark NHLFE for delete or directly delete, as appropriate. */ |
4a2a5236 | 3342 | if (schedule_lsp) { |
d62a17ae | 3343 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); |
4a2a5236 MS |
3344 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); |
3345 | ||
3346 | if (IS_ZEBRA_DEBUG_MPLS) | |
3347 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
3348 | lsp->ile.in_label, lsp->flags); | |
d62a17ae | 3349 | if (lsp_processq_add(lsp)) |
3350 | return -1; | |
3351 | } else { | |
3352 | nhlfe_del(nhlfe); | |
3353 | ||
3354 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3355 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3356 | } |
3357 | return 0; | |
ce549947 RW |
3358 | } |
3359 | ||
ea6b290b RW |
3360 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3361 | mpls_label_t in_label) | |
3362 | { | |
3363 | struct hash *lsp_table; | |
a7d2146a | 3364 | struct zebra_ile tmp_ile; |
8f74a383 | 3365 | struct zebra_lsp *lsp; |
ea6b290b RW |
3366 | |
3367 | /* Lookup table. */ | |
3368 | lsp_table = zvrf->lsp_table; | |
3369 | if (!lsp_table) | |
3370 | return -1; | |
3371 | ||
3372 | /* If entry is not present, exit. */ | |
3373 | tmp_ile.in_label = in_label; | |
3374 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3375 | if (!lsp) | |
3376 | return 0; | |
3377 | ||
3378 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3379 | } | |
3380 | ||
ce549947 | 3381 | /* |
651105b5 | 3382 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3383 | * If no other NHLFEs exist, the entry would be deleted. |
3384 | */ | |
651105b5 | 3385 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3386 | { |
651105b5 | 3387 | struct lsp_uninstall_args *args = ctxt; |
8f74a383 | 3388 | struct zebra_lsp *lsp; |
d62a17ae | 3389 | struct hash *lsp_table; |
ce549947 | 3390 | |
8f74a383 | 3391 | lsp = (struct zebra_lsp *)bucket->data; |
ee70f629 | 3392 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3393 | return; |
ce549947 | 3394 | |
651105b5 | 3395 | lsp_table = args->lsp_table; |
d62a17ae | 3396 | if (!lsp_table) |
3397 | return; | |
ce549947 | 3398 | |
651105b5 | 3399 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3400 | } |
3401 | ||
3402 | /* | |
651105b5 RW |
3403 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3404 | * LSP type. | |
ce549947 | 3405 | */ |
651105b5 RW |
3406 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3407 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3408 | { |
3409 | struct route_table *table; | |
3410 | struct route_node *rn; | |
3411 | struct route_entry *re; | |
3412 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3413 | struct nexthop_group *nhg; |
3414 | bool update; | |
d62a17ae | 3415 | |
3416 | /* Process routes of interested address-families. */ | |
3417 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3418 | if (!table) | |
3419 | return; | |
3420 | ||
3421 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3422 | update = false; |
3423 | ||
a2addae8 | 3424 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3425 | struct nhg_hash_entry *new_nhe; |
da137142 | 3426 | |
f2e7f4eb | 3427 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3428 | |
f2e7f4eb MS |
3429 | nhg = &new_nhe->nhg; |
3430 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3431 | nexthop = nexthop->next) { |
651105b5 | 3432 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3433 | continue; |
3434 | ||
d62a17ae | 3435 | nexthop_del_labels(nexthop); |
3436 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3437 | SET_FLAG(re->status, | |
332ad713 | 3438 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3439 | update = true; |
3440 | } | |
3441 | ||
3442 | /* Check for backup info and update that also */ | |
3443 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3444 | if (nhg != NULL) { | |
3445 | for (nexthop = nhg->nexthop; nexthop; | |
3446 | nexthop = nexthop->next) { | |
3447 | if (nexthop->nh_label_type != lsp_type) | |
3448 | continue; | |
3449 | ||
3450 | nexthop_del_labels(nexthop); | |
3451 | SET_FLAG(re->status, | |
3452 | ROUTE_ENTRY_CHANGED); | |
3453 | SET_FLAG(re->status, | |
3454 | ROUTE_ENTRY_LABELS_CHANGED); | |
3455 | update = true; | |
3456 | } | |
d62a17ae | 3457 | } |
da137142 | 3458 | |
19474c9c | 3459 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3460 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3461 | |
f2e7f4eb | 3462 | zebra_nhg_free(new_nhe); |
407c87a6 | 3463 | } |
d62a17ae | 3464 | |
3465 | if (update) | |
3466 | rib_queue_add(rn); | |
3467 | } | |
ce549947 RW |
3468 | } |
3469 | ||
1c1cf002 | 3470 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3471 | /* |
3472 | * Check that the label values used in LSP creation are consistent. The | |
3473 | * main criteria is that if there is ECMP, the label operation must still | |
3474 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3475 | * to current HW restrictions. | |
3476 | */ | |
d62a17ae | 3477 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3478 | mpls_label_t in_label, | |
3479 | mpls_label_t out_label, | |
3480 | enum nexthop_types_t gtype, | |
3481 | union g_addr *gate, ifindex_t ifindex) | |
3482 | { | |
3483 | struct hash *slsp_table; | |
a7d2146a | 3484 | struct zebra_ile tmp_ile; |
8f74a383 | 3485 | struct zebra_lsp *lsp; |
f2595bd5 | 3486 | struct zebra_nhlfe *nhlfe; |
608a57c0 | 3487 | const struct nexthop *nh; |
d62a17ae | 3488 | |
3489 | /* Lookup table. */ | |
3490 | slsp_table = zvrf->slsp_table; | |
3491 | if (!slsp_table) | |
3492 | return 0; | |
3493 | ||
3494 | /* If entry is not present, exit. */ | |
3495 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3496 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3497 | if (!lsp) | |
d62a17ae | 3498 | return 1; |
3499 | ||
608a57c0 MS |
3500 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3501 | gtype, gate, ifindex); | |
3502 | if (nhlfe) { | |
3503 | nh = nhlfe->nexthop; | |
3504 | ||
3505 | if (nh == NULL || nh->nh_label == NULL) | |
3506 | return 0; | |
3507 | ||
3508 | if (nh->nh_label->label[0] == out_label) | |
d62a17ae | 3509 | return 1; |
3510 | ||
3511 | /* If not only NHLFE, cannot allow label change. */ | |
608a57c0 MS |
3512 | if (nhlfe != nhlfe_list_first(&lsp->nhlfe_list) || |
3513 | nhlfe_list_next(&lsp->nhlfe_list, nhlfe) != NULL) | |
d62a17ae | 3514 | return 0; |
3515 | } else { | |
3516 | /* If other NHLFEs exist, label operation must match. */ | |
608a57c0 MS |
3517 | nhlfe = nhlfe_list_first(&lsp->nhlfe_list); |
3518 | if (nhlfe != NULL) { | |
d62a17ae | 3519 | int cur_op, new_op; |
3520 | ||
608a57c0 MS |
3521 | nh = nhlfe->nexthop; |
3522 | ||
3523 | if (nh == NULL || nh->nh_label == NULL) | |
3524 | return 0; | |
3525 | ||
3526 | cur_op = (nh->nh_label->label[0] == | |
ee70f629 | 3527 | MPLS_LABEL_IMPLICIT_NULL); |
70e98a7f | 3528 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3529 | if (cur_op != new_op) |
3530 | return 0; | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* Label values are good. */ | |
3535 | return 1; | |
7758e3f3 | 3536 | } |
1c1cf002 | 3537 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3538 | |
3539 | /* | |
3540 | * Add static LSP entry. This may be the first entry for this incoming label | |
3541 | * or an additional nexthop; an existing entry may also have outgoing label | |
3542 | * changed. | |
3543 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3544 | * NHLFEs). | |
3545 | */ | |
d62a17ae | 3546 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3547 | mpls_label_t out_label, | |
3548 | enum nexthop_types_t gtype, union g_addr *gate, | |
3549 | ifindex_t ifindex) | |
3550 | { | |
3551 | struct hash *slsp_table; | |
a7d2146a | 3552 | struct zebra_ile tmp_ile; |
8f74a383 | 3553 | struct zebra_lsp *lsp; |
f2595bd5 | 3554 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 3555 | char buf[BUFSIZ]; |
3556 | ||
3557 | /* Lookup table. */ | |
3558 | slsp_table = zvrf->slsp_table; | |
3559 | if (!slsp_table) | |
3560 | return -1; | |
3561 | ||
e4a1ec74 | 3562 | /* Find or create LSP. */ |
d62a17ae | 3563 | tmp_ile.in_label = in_label; |
608a57c0 MS |
3564 | lsp = hash_get(slsp_table, &tmp_ile, lsp_alloc); |
3565 | if (!lsp) | |
d62a17ae | 3566 | return -1; |
e4a1ec74 | 3567 | |
608a57c0 MS |
3568 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, gtype, gate, |
3569 | ifindex); | |
3570 | if (nhlfe) { | |
3571 | struct nexthop *nh = nhlfe->nexthop; | |
3572 | ||
3573 | assert(nh); | |
3574 | assert(nh->nh_label); | |
3575 | ||
3576 | /* Compare existing nexthop */ | |
3577 | if (nh->nh_label->num_labels == 1 && | |
3578 | nh->nh_label->label[0] == out_label) | |
d62a17ae | 3579 | /* No change */ |
3580 | return 0; | |
3581 | ||
3582 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3583 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3584 | zlog_debug( |
3efd0893 | 3585 | "Upd static LSP in-label %u nexthop %s out-label %u (old %u)", |
608a57c0 MS |
3586 | in_label, buf, out_label, |
3587 | nh->nh_label->label[0]); | |
3588 | } | |
3589 | if (nh->nh_label->num_labels == 1) | |
3590 | nh->nh_label->label[0] = out_label; | |
3591 | else { | |
3592 | nexthop_del_labels(nh); | |
3593 | nexthop_add_labels(nh, ZEBRA_LSP_STATIC, 1, &out_label); | |
d62a17ae | 3594 | } |
608a57c0 | 3595 | |
d62a17ae | 3596 | } else { |
3597 | /* Add static LSP entry to this nexthop */ | |
608a57c0 MS |
3598 | nhlfe = nhlfe_add(lsp, ZEBRA_LSP_STATIC, gtype, gate, |
3599 | ifindex, 1, &out_label, false /*backup*/); | |
3600 | if (!nhlfe) | |
d62a17ae | 3601 | return -1; |
3602 | ||
3603 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3604 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3605 | zlog_debug( |
3606 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3607 | in_label, buf, out_label); | |
3608 | } | |
3609 | } | |
3610 | ||
3611 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3612 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3613 | gtype, gate, ifindex)) | |
d62a17ae | 3614 | return -1; |
3615 | ||
3616 | return 0; | |
7758e3f3 | 3617 | } |
3618 | ||
3619 | /* | |
3620 | * Delete static LSP entry. This may be the delete of one particular | |
3621 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3622 | * all NHLFEs). | |
3623 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3624 | * LSP configuration. | |
3625 | */ | |
d62a17ae | 3626 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3627 | enum nexthop_types_t gtype, union g_addr *gate, | |
3628 | ifindex_t ifindex) | |
3629 | { | |
3630 | struct hash *slsp_table; | |
a7d2146a | 3631 | struct zebra_ile tmp_ile; |
8f74a383 | 3632 | struct zebra_lsp *lsp; |
f2595bd5 | 3633 | struct zebra_nhlfe *nhlfe; |
d62a17ae | 3634 | |
3635 | /* Lookup table. */ | |
3636 | slsp_table = zvrf->slsp_table; | |
3637 | if (!slsp_table) | |
3638 | return -1; | |
3639 | ||
3640 | /* If entry is not present, exit. */ | |
3641 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3642 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3643 | if (!lsp) | |
d62a17ae | 3644 | return 0; |
3645 | ||
3646 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3647 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3648 | if (IS_ZEBRA_DEBUG_MPLS) | |
3649 | zlog_debug("Del static LSP in-label %u", in_label); | |
3650 | ||
3651 | /* Uninstall entire LSP from the main table. */ | |
3652 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3653 | ||
3654 | /* Delete all static NHLFEs */ | |
608a57c0 MS |
3655 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3656 | nhlfe_del(nhlfe); | |
3657 | } | |
d62a17ae | 3658 | } else { |
3659 | /* Find specific NHLFE, exit if not found. */ | |
608a57c0 MS |
3660 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3661 | gtype, gate, ifindex); | |
3662 | if (!nhlfe) | |
d62a17ae | 3663 | return 0; |
3664 | ||
3665 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3666 | char buf[BUFSIZ]; | |
608a57c0 | 3667 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3668 | zlog_debug("Del static LSP in-label %u nexthop %s", |
3669 | in_label, buf); | |
3670 | } | |
3671 | ||
3672 | /* Uninstall LSP from the main table. */ | |
3673 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
cc1b9746 | 3674 | gate, ifindex, false); |
d62a17ae | 3675 | |
3676 | /* Delete static LSP NHLFE */ | |
608a57c0 | 3677 | nhlfe_del(nhlfe); |
d62a17ae | 3678 | } |
3679 | ||
3680 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
608a57c0 MS |
3681 | * above. |
3682 | */ | |
3683 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) { | |
3684 | lsp = hash_release(slsp_table, &tmp_ile); | |
3685 | XFREE(MTYPE_LSP, lsp); | |
d62a17ae | 3686 | } |
3687 | ||
3688 | return 0; | |
7758e3f3 | 3689 | } |
3690 | ||
40c7bdb0 | 3691 | /* |
3692 | * Schedule all MPLS label forwarding entries for processing. | |
3693 | * Called upon changes that may affect one or more of them such as | |
3694 | * interface or nexthop state changes. | |
3695 | */ | |
d62a17ae | 3696 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3697 | { |
d62a17ae | 3698 | if (!zvrf) |
3699 | return; | |
3700 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3701 | } |
3702 | ||
3ab18ff2 | 3703 | /* |
3704 | * Display MPLS label forwarding table for a specific LSP | |
3705 | * (VTY command handler). | |
3706 | */ | |
d62a17ae | 3707 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3708 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3709 | { |
d62a17ae | 3710 | struct hash *lsp_table; |
8f74a383 | 3711 | struct zebra_lsp *lsp; |
a7d2146a | 3712 | struct zebra_ile tmp_ile; |
d62a17ae | 3713 | json_object *json = NULL; |
3ab18ff2 | 3714 | |
d62a17ae | 3715 | /* Lookup table. */ |
3716 | lsp_table = zvrf->lsp_table; | |
3717 | if (!lsp_table) | |
3718 | return; | |
3ab18ff2 | 3719 | |
d62a17ae | 3720 | /* If entry is not present, exit. */ |
3721 | tmp_ile.in_label = label; | |
3722 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3723 | if (!lsp) | |
3724 | return; | |
3ab18ff2 | 3725 | |
d62a17ae | 3726 | if (use_json) { |
3727 | json = lsp_json(lsp); | |
9d303b37 DL |
3728 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3729 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3730 | json_object_free(json); |
3731 | } else | |
a29c2887 | 3732 | lsp_print(vty, lsp); |
3ab18ff2 | 3733 | } |
3734 | ||
3735 | /* | |
3736 | * Display MPLS label forwarding table (VTY command handler). | |
3737 | */ | |
d62a17ae | 3738 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3739 | bool use_json) |
d62a17ae | 3740 | { |
3741 | char buf[BUFSIZ]; | |
3742 | json_object *json = NULL; | |
8f74a383 | 3743 | struct zebra_lsp *lsp = NULL; |
f2595bd5 | 3744 | struct zebra_nhlfe *nhlfe = NULL; |
d62a17ae | 3745 | struct listnode *node = NULL; |
3746 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3747 | ||
3748 | if (use_json) { | |
3749 | json = json_object_new_object(); | |
3750 | ||
3751 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3752 | json_object_object_add( | |
43a9f66c MS |
3753 | json, label2str(lsp->ile.in_label, buf, |
3754 | sizeof(buf)), | |
d62a17ae | 3755 | lsp_json(lsp)); |
3756 | ||
9d303b37 DL |
3757 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3758 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3759 | json_object_free(json); |
3760 | } else { | |
a971aeb6 RW |
3761 | struct ttable *tt; |
3762 | ||
3763 | /* Prepare table. */ | |
3764 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3765 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3766 | tt->style.cell.rpad = 2; | |
3767 | tt->style.corner = '+'; | |
3768 | ttable_restyle(tt); | |
3769 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3770 | |
3771 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3772 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3773 | struct nexthop *nexthop; |
3774 | const char *out_label_str; | |
3775 | char nh_buf[NEXTHOP_STRLEN]; | |
3776 | ||
d62a17ae | 3777 | nexthop = nhlfe->nexthop; |
3778 | ||
3779 | switch (nexthop->type) { | |
996c9314 | 3780 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3781 | struct zebra_ns *zns; |
b9abd9ad DS |
3782 | struct interface *ifp; |
3783 | ||
86f07f44 PG |
3784 | zns = zebra_ns_lookup(NS_DEFAULT); |
3785 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3786 | zns, nexthop->ifindex); |
3787 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3788 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3789 | break; |
3790 | } | |
d62a17ae | 3791 | case NEXTHOP_TYPE_IPV4: |
3792 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3793 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3794 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3795 | break; |
3796 | case NEXTHOP_TYPE_IPV6: | |
3797 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3798 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3799 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3800 | break; |
10cc80ca | 3801 | case NEXTHOP_TYPE_BLACKHOLE: |
d62a17ae | 3802 | break; |
3803 | } | |
3804 | ||
b9abd9ad | 3805 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3806 | out_label_str = mpls_label2str( |
3807 | nexthop->nh_label->num_labels, | |
3808 | &nexthop->nh_label->label[0], | |
43a9f66c | 3809 | buf, sizeof(buf), 1); |
b9abd9ad | 3810 | else |
a971aeb6 RW |
3811 | out_label_str = "-"; |
3812 | ||
3813 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3814 | lsp->ile.in_label, | |
3815 | nhlfe_type2str(nhlfe->type), | |
3816 | nh_buf, out_label_str); | |
d62a17ae | 3817 | } |
3818 | } | |
3819 | ||
a971aeb6 RW |
3820 | /* Dump the generated table. */ |
3821 | if (tt->nrows > 1) { | |
3822 | char *table = ttable_dump(tt, "\n"); | |
3823 | vty_out(vty, "%s\n", table); | |
3824 | XFREE(MTYPE_TMP, table); | |
3825 | } | |
3826 | ttable_del(tt); | |
d62a17ae | 3827 | } |
3828 | ||
6a154c88 | 3829 | list_delete(&lsp_list); |
3ab18ff2 | 3830 | } |
3831 | ||
608a57c0 MS |
3832 | /* |
3833 | * Create printable string for static LSP configuration. | |
3834 | */ | |
f2595bd5 DS |
3835 | static char *nhlfe_config_str(const struct zebra_nhlfe *nhlfe, char *buf, |
3836 | int size) | |
608a57c0 MS |
3837 | { |
3838 | const struct nexthop *nh; | |
3839 | ||
3840 | nh = nhlfe->nexthop; | |
3841 | ||
3842 | buf[0] = '\0'; | |
3843 | switch (nh->type) { | |
3844 | case NEXTHOP_TYPE_IPV4: | |
10cc80ca | 3845 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
608a57c0 | 3846 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, size); |
10cc80ca DS |
3847 | if (nh->ifindex) |
3848 | strlcat(buf, ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3849 | size); | |
608a57c0 MS |
3850 | break; |
3851 | case NEXTHOP_TYPE_IPV6: | |
3852 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3853 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, size); | |
3854 | if (nh->ifindex) | |
3855 | strlcat(buf, | |
3856 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3857 | size); | |
3858 | break; | |
10cc80ca | 3859 | case NEXTHOP_TYPE_IFINDEX: |
a44e3106 MS |
3860 | if (nh->ifindex) |
3861 | strlcat(buf, | |
3862 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3863 | size); | |
3864 | break; | |
3865 | case NEXTHOP_TYPE_BLACKHOLE: | |
608a57c0 MS |
3866 | break; |
3867 | } | |
3868 | ||
3869 | return buf; | |
3870 | } | |
3871 | ||
7758e3f3 | 3872 | /* |
3873 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3874 | */ | |
d62a17ae | 3875 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3876 | { | |
8f74a383 | 3877 | struct zebra_lsp *lsp; |
f2595bd5 | 3878 | struct zebra_nhlfe *nhlfe; |
608a57c0 | 3879 | struct nexthop *nh; |
d62a17ae | 3880 | struct listnode *node; |
3881 | struct list *slsp_list = | |
608a57c0 | 3882 | hash_get_sorted_list(zvrf->slsp_table, lsp_cmp); |
d62a17ae | 3883 | |
608a57c0 MS |
3884 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, lsp)) { |
3885 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
0af35d90 | 3886 | char buf[BUFSIZ]; |
d62a17ae | 3887 | char lstr[30]; |
3888 | ||
608a57c0 MS |
3889 | nh = nhlfe->nexthop; |
3890 | if (nh == NULL || nh->nh_label == NULL) | |
3891 | continue; | |
3892 | ||
3893 | nhlfe_config_str(nhlfe, buf, sizeof(buf)); | |
3894 | ||
3895 | switch (nh->nh_label->label[0]) { | |
70e98a7f DS |
3896 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3897 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3898 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3899 | break; | |
70e98a7f | 3900 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3901 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3902 | break; | |
3903 | default: | |
772270f3 | 3904 | snprintf(lstr, sizeof(lstr), "%u", |
608a57c0 | 3905 | nh->nh_label->label[0]); |
d62a17ae | 3906 | break; |
3907 | } | |
3908 | ||
608a57c0 | 3909 | vty_out(vty, "mpls lsp %u %s %s\n", lsp->ile.in_label, |
d62a17ae | 3910 | buf, lstr); |
3911 | } | |
3912 | } | |
b78b820d | 3913 | |
6a154c88 | 3914 | list_delete(&slsp_list); |
d62a17ae | 3915 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3916 | } |
3917 | ||
1b6d5c7e VV |
3918 | /* |
3919 | * Add/update global label block. | |
3920 | */ | |
d7c0a89a QY |
3921 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3922 | uint32_t end_label) | |
1b6d5c7e | 3923 | { |
d62a17ae | 3924 | zvrf->mpls_srgb.start_label = start_label; |
3925 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3926 | |
d62a17ae | 3927 | /* Evaluate registered FECs to see if any get a label or not. */ |
3928 | fec_evaluate(zvrf); | |
3929 | return 0; | |
1b6d5c7e VV |
3930 | } |
3931 | ||
3932 | /* | |
3933 | * Delete global label block. | |
3934 | */ | |
d62a17ae | 3935 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3936 | { |
d62a17ae | 3937 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3938 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3939 | |
d62a17ae | 3940 | /* Process registered FECs to clear their local label, if needed. */ |
3941 | fec_evaluate(zvrf); | |
3942 | return 0; | |
1b6d5c7e VV |
3943 | } |
3944 | ||
3945 | /* | |
3946 | * Display MPLS global label block configuration (VTY command handler). | |
3947 | */ | |
d62a17ae | 3948 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3949 | { |
d62a17ae | 3950 | if (zvrf->mpls_srgb.start_label == 0) |
3951 | return 0; | |
1b6d5c7e | 3952 | |
d62a17ae | 3953 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3954 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3955 | vty_out(vty, "mpls label global-block %u %u\n", | |
3956 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3957 | } | |
1b6d5c7e | 3958 | |
d62a17ae | 3959 | return 1; |
1b6d5c7e VV |
3960 | } |
3961 | ||
84915b0a | 3962 | /* |
3963 | * Called when VRF becomes inactive, cleans up information but keeps | |
3964 | * the table itself. | |
84915b0a | 3965 | */ |
3966 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3967 | { | |
c2e10644 MS |
3968 | struct zebra_vrf *def_zvrf; |
3969 | afi_t afi; | |
3970 | ||
3971 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3972 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3973 | else { | |
3974 | /* | |
3975 | * For other vrfs, we try to remove associated LSPs; we locate | |
3976 | * the LSPs in the default vrf. | |
3977 | */ | |
3978 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3979 | ||
3980 | /* At shutdown, the default may be gone already */ | |
3981 | if (def_zvrf == NULL) | |
3982 | return; | |
3983 | ||
3984 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3985 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3986 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3987 | } | |
3988 | } | |
84915b0a | 3989 | } |
3990 | ||
06302ecb DS |
3991 | /* |
3992 | * When a vrf label is assigned and the client goes away | |
3993 | * we should cleanup the vrf labels associated with | |
3994 | * that zclient. | |
3995 | */ | |
3996 | void zebra_mpls_client_cleanup_vrf_label(uint8_t proto) | |
3997 | { | |
3998 | struct vrf *vrf; | |
3999 | struct zebra_vrf *def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
4000 | ||
4001 | if (def_zvrf == NULL) | |
4002 | return; | |
4003 | ||
4004 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
4005 | struct zebra_vrf *zvrf = vrf->info; | |
4006 | afi_t afi; | |
4007 | ||
4008 | if (!zvrf) | |
4009 | continue; | |
4010 | ||
4011 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
4012 | if (zvrf->label_proto[afi] == proto | |
4013 | && zvrf->label[afi] != MPLS_LABEL_NONE) | |
4014 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
4015 | ||
4016 | /* | |
4017 | * Cleanup data structures by fiat | |
4018 | */ | |
4019 | zvrf->label_proto[afi] = 0; | |
4020 | zvrf->label[afi] = MPLS_LABEL_NONE; | |
4021 | } | |
4022 | } | |
4023 | } | |
4024 | ||
40c7bdb0 | 4025 | /* |
4026 | * Called upon process exiting, need to delete LSP forwarding | |
4027 | * entries from the kernel. | |
4028 | * NOTE: Currently supported only for default VRF. | |
4029 | */ | |
d62a17ae | 4030 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 4031 | { |
d62a17ae | 4032 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
4033 | hash_clean(zvrf->lsp_table, NULL); | |
4034 | hash_free(zvrf->lsp_table); | |
4035 | hash_clean(zvrf->slsp_table, NULL); | |
4036 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
4037 | route_table_finish(zvrf->fec_table[AFI_IP]); |
4038 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 4039 | } |
4040 | ||
7758e3f3 | 4041 | /* |
4042 | * Allocate MPLS tables for this VRF and do other initialization. | |
4043 | * NOTE: Currently supported only for default VRF. | |
4044 | */ | |
d62a17ae | 4045 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 4046 | { |
4a73887e DS |
4047 | char buffer[80]; |
4048 | ||
d62a17ae | 4049 | if (!zvrf) |
4050 | return; | |
4a73887e DS |
4051 | |
4052 | snprintf(buffer, sizeof(buffer), "ZEBRA SLSP table: %s", | |
4053 | zvrf->vrf->name); | |
e2071325 | 4054 | zvrf->slsp_table = hash_create_size(8, label_hash, label_cmp, buffer); |
4a73887e DS |
4055 | |
4056 | snprintf(buffer, sizeof(buffer), "ZEBRA LSP table: %s", | |
4057 | zvrf->vrf->name); | |
4058 | zvrf->lsp_table = hash_create_size(8, label_hash, label_cmp, buffer); | |
d62a17ae | 4059 | zvrf->fec_table[AFI_IP] = route_table_init(); |
4060 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
4061 | zvrf->mpls_flags = 0; | |
4062 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
4063 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 4064 | } |
4065 | ||
4066 | /* | |
4067 | * Global MPLS initialization. | |
4068 | */ | |
d62a17ae | 4069 | void zebra_mpls_init(void) |
7758e3f3 | 4070 | { |
d62a17ae | 4071 | mpls_enabled = 0; |
6fb35808 | 4072 | mpls_pw_reach_strict = false; |
33c32282 | 4073 | |
d62a17ae | 4074 | if (mpls_kernel_init() < 0) { |
e914ccbe | 4075 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 4076 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 4077 | return; |
4078 | } | |
fe6c7157 | 4079 | |
2561d12e | 4080 | if (!mpls_processq_init()) |
d62a17ae | 4081 | mpls_enabled = 1; |
453844ab | 4082 | |
21ccc0cf | 4083 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 4084 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 4085 | } |