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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" | |
47 | #include "zebra/zebra_memory.h" | |
48 | #include "zebra/zebra_vrf.h" | |
49 | #include "zebra/zebra_mpls.h" | |
31f937fb | 50 | #include "zebra/zebra_srte.h" |
43e52561 | 51 | #include "zebra/zebra_errors.h" |
7758e3f3 | 52 | |
d62a17ae | 53 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object") |
54 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object") | |
d62a17ae | 55 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object") |
7758e3f3 | 56 | |
fe6c7157 RW |
57 | int mpls_enabled; |
58 | ||
7758e3f3 | 59 | /* static function declarations */ |
f31e084c | 60 | |
d62a17ae | 61 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
62 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
63 | zebra_fec_t *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); | |
67 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
68 | mpls_label_t old_label); | |
69 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
70 | static void fec_update_clients(zebra_fec_t *fec); | |
71 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
72 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
73 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
74 | mpls_label_t label, uint32_t flags, |
75 | uint32_t label_index); | |
d62a17ae | 76 | static int fec_del(zebra_fec_t *fec); |
77 | ||
d8b87afe | 78 | static unsigned int label_hash(const void *p); |
74df8d6d | 79 | static bool label_cmp(const void *p1, const void *p2); |
d62a17ae | 80 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
81 | struct nexthop *nexthop); | |
82 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
83 | struct nexthop *nexthop); | |
84 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
85 | ||
86 | static void lsp_select_best_nhlfe(zebra_lsp_t *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); | |
92 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
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 */ | |
96 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
97 | ||
ebab422a MS |
98 | /* Free lsp; sets caller's pointer to NULL */ |
99 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
d62a17ae | 100 | |
608a57c0 MS |
101 | static char *nhlfe2str(const zebra_nhlfe_t *nhlfe, char *buf, int size); |
102 | static char *nhlfe_config_str(const zebra_nhlfe_t *nhlfe, char *buf, int size); | |
d62a17ae | 103 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 104 | const union g_addr *gate, ifindex_t ifindex); |
ee70f629 MS |
105 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
106 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
107 | enum nexthop_types_t gtype, |
108 | const union g_addr *gate, ifindex_t ifindex); | |
d62a17ae | 109 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
110 | enum nexthop_types_t gtype, |
111 | const union g_addr *gate, ifindex_t ifindex, | |
cc1b9746 MS |
112 | uint8_t num_labels, const mpls_label_t *labels, |
113 | bool is_backup); | |
cd4bb96f MS |
114 | static int nhlfe_del(zebra_nhlfe_t *nhlfe); |
115 | static void nhlfe_free(zebra_nhlfe_t *nhlfe); | |
d62a17ae | 116 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 117 | struct mpls_label_stack *nh_label); |
d62a17ae | 118 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
119 | enum lsp_types_t type); | |
120 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
121 | mpls_label_t in_label); | |
3c0e1622 MS |
122 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty, |
123 | const char *indent); | |
a29c2887 | 124 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp); |
651105b5 RW |
125 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
126 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
127 | int afi, enum lsp_types_t lsp_type); | |
f2e7f4eb MS |
128 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
129 | const struct zapi_nexthop *znh); | |
130 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, | |
131 | const struct zapi_nexthop *znh); | |
7758e3f3 | 132 | |
7758e3f3 | 133 | /* Static functions */ |
134 | ||
3d468f66 DS |
135 | /* |
136 | * Handle failure in LSP install, clear flags for NHLFE. | |
137 | */ | |
138 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
139 | { | |
140 | zebra_nhlfe_t *nhlfe; | |
141 | struct nexthop *nexthop; | |
142 | ||
ee70f629 | 143 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3d468f66 DS |
144 | nexthop = nhlfe->nexthop; |
145 | if (!nexthop) | |
146 | continue; | |
147 | ||
148 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
149 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
150 | } | |
68110c42 MS |
151 | |
152 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
153 | nexthop = nhlfe->nexthop; | |
154 | if (!nexthop) | |
155 | continue; | |
156 | ||
157 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
158 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
159 | } | |
3d468f66 DS |
160 | } |
161 | ||
a64448ba DS |
162 | /* |
163 | * Install label forwarding entry based on labeled-route entry. | |
164 | */ | |
d62a17ae | 165 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
166 | struct route_node *rn, struct route_entry *re) | |
167 | { | |
168 | struct hash *lsp_table; | |
169 | zebra_ile_t tmp_ile; | |
170 | zebra_lsp_t *lsp; | |
171 | zebra_nhlfe_t *nhlfe; | |
172 | struct nexthop *nexthop; | |
173 | enum lsp_types_t lsp_type; | |
174 | char buf[BUFSIZ]; | |
175 | int added, changed; | |
176 | ||
177 | /* Lookup table. */ | |
178 | lsp_table = zvrf->lsp_table; | |
179 | if (!lsp_table) | |
180 | return -1; | |
181 | ||
182 | lsp_type = lsp_type_from_re_type(re->type); | |
183 | added = changed = 0; | |
184 | ||
185 | /* Locate or allocate LSP entry. */ | |
186 | tmp_ile.in_label = label; | |
187 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
188 | if (!lsp) | |
189 | return -1; | |
190 | ||
191 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
192 | * recursive nexthops right now, because intermediate hops won't | |
193 | * understand | |
194 | * the label advertised by the recursive nexthop (plus we don't have the | |
195 | * logic yet to push multiple labels). | |
196 | */ | |
c415d895 | 197 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 198 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 199 | /* Skip inactive and recursive entries. */ |
200 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
201 | continue; | |
202 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
203 | continue; | |
204 | ||
ee70f629 MS |
205 | nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type, |
206 | nexthop->type, &nexthop->gate, | |
d62a17ae | 207 | nexthop->ifindex); |
208 | if (nhlfe) { | |
209 | /* Clear deleted flag (in case it was set) */ | |
210 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
211 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
212 | /* No change */ | |
213 | continue; | |
214 | ||
215 | ||
216 | if (IS_ZEBRA_DEBUG_MPLS) { | |
217 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
218 | zlog_debug( | |
3efd0893 | 219 | "LSP in-label %u type %d nexthop %s out-label changed", |
d62a17ae | 220 | lsp->ile.in_label, lsp_type, buf); |
221 | } | |
222 | ||
223 | /* Update out label, trigger processing. */ | |
224 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
225 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
226 | changed++; | |
227 | } else { | |
228 | /* Add LSP entry to this nexthop */ | |
229 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
230 | &nexthop->gate, nexthop->ifindex, | |
5065db0a | 231 | nexthop->nh_label->num_labels, |
cc1b9746 MS |
232 | nexthop->nh_label->label, |
233 | false /*backup*/); | |
d62a17ae | 234 | if (!nhlfe) |
235 | return -1; | |
236 | ||
237 | if (IS_ZEBRA_DEBUG_MPLS) { | |
238 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
239 | zlog_debug( | |
3efd0893 | 240 | "Add LSP in-label %u type %d nexthop %s out-label %u", |
d62a17ae | 241 | lsp->ile.in_label, lsp_type, buf, |
242 | nexthop->nh_label->label[0]); | |
243 | } | |
244 | ||
245 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
246 | ||
247 | /* Mark NHLFE as changed. */ | |
248 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
249 | added++; | |
250 | } | |
251 | } | |
252 | ||
253 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
254 | * case), delete the LSP entry; this case results in somewhat ugly | |
255 | * logging. | |
256 | */ | |
257 | if (added || changed) { | |
258 | if (lsp_processq_add(lsp)) | |
259 | return -1; | |
1323491d MS |
260 | } else { |
261 | lsp_check_free(lsp_table, &lsp); | |
262 | } | |
d62a17ae | 263 | |
264 | return 0; | |
a64448ba DS |
265 | } |
266 | ||
267 | /* | |
268 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
269 | * NHLFEs are removed, the entire entry is deleted. | |
270 | */ | |
d62a17ae | 271 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
272 | { | |
273 | struct hash *lsp_table; | |
274 | zebra_ile_t tmp_ile; | |
275 | zebra_lsp_t *lsp; | |
ee70f629 | 276 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 277 | char buf[BUFSIZ]; |
278 | ||
279 | /* Lookup table. */ | |
280 | lsp_table = zvrf->lsp_table; | |
281 | if (!lsp_table) | |
282 | return -1; | |
283 | ||
284 | /* If entry is not present, exit. */ | |
285 | tmp_ile.in_label = label; | |
286 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 287 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 288 | return 0; |
289 | ||
290 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 291 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 292 | |
293 | /* Skip static NHLFEs */ | |
294 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
295 | continue; | |
296 | ||
297 | if (IS_ZEBRA_DEBUG_MPLS) { | |
298 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
299 | zlog_debug( | |
300 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
301 | label, nhlfe->type, buf, nhlfe->flags); | |
302 | } | |
303 | ||
304 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
305 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
306 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
307 | } else { | |
308 | nhlfe_del(nhlfe); | |
309 | } | |
310 | } | |
311 | ||
312 | /* Queue LSP for processing, if needed, else delete. */ | |
313 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
314 | if (lsp_processq_add(lsp)) | |
315 | return -1; | |
1323491d MS |
316 | } else { |
317 | lsp_check_free(lsp_table, &lsp); | |
318 | } | |
d62a17ae | 319 | |
320 | return 0; | |
a64448ba DS |
321 | } |
322 | ||
28d58fd7 VV |
323 | /* |
324 | * This function is invoked upon change to label block configuration; it | |
325 | * will walk all registered FECs with label-index and appropriately update | |
326 | * their local labels and trigger client updates. | |
327 | */ | |
d62a17ae | 328 | static void fec_evaluate(struct zebra_vrf *zvrf) |
329 | { | |
330 | struct route_node *rn; | |
331 | zebra_fec_t *fec; | |
d7c0a89a | 332 | uint32_t old_label, new_label; |
d62a17ae | 333 | int af; |
334 | char buf[BUFSIZ]; | |
335 | ||
336 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
337 | if (zvrf->fec_table[af] == NULL) | |
338 | continue; | |
339 | ||
340 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
341 | rn = route_next(rn)) { | |
342 | if ((fec = rn->info) == NULL) | |
343 | continue; | |
344 | ||
345 | /* Skip configured FECs and those without a label index. | |
346 | */ | |
347 | if (fec->flags & FEC_FLAG_CONFIGURED | |
348 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
349 | continue; | |
350 | ||
351 | if (IS_ZEBRA_DEBUG_MPLS) | |
352 | prefix2str(&rn->p, buf, BUFSIZ); | |
353 | ||
354 | /* Save old label, determine new label. */ | |
355 | old_label = fec->label; | |
356 | new_label = | |
357 | zvrf->mpls_srgb.start_label + fec->label_index; | |
358 | if (new_label >= zvrf->mpls_srgb.end_label) | |
359 | new_label = MPLS_INVALID_LABEL; | |
360 | ||
361 | /* If label has changed, update FEC and clients. */ | |
362 | if (new_label == old_label) | |
363 | continue; | |
364 | ||
365 | if (IS_ZEBRA_DEBUG_MPLS) | |
366 | zlog_debug( | |
367 | "Update fec %s new label %u upon label block", | |
368 | buf, new_label); | |
369 | ||
370 | fec->label = new_label; | |
371 | fec_update_clients(fec); | |
372 | ||
373 | /* Update label forwarding entries appropriately */ | |
374 | fec_change_update_lsp(zvrf, fec, old_label); | |
375 | } | |
376 | } | |
28d58fd7 VV |
377 | } |
378 | ||
379 | /* | |
380 | * Derive (if possible) and update the local label for the FEC based on | |
381 | * its label index. The index is "acceptable" if it falls within the | |
382 | * globally configured label block (SRGB). | |
383 | */ | |
d7c0a89a QY |
384 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
385 | zebra_fec_t *fec) | |
28d58fd7 | 386 | { |
d7c0a89a | 387 | uint32_t label; |
28d58fd7 | 388 | |
d62a17ae | 389 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
390 | && zvrf->mpls_srgb.start_label | |
391 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
392 | < zvrf->mpls_srgb.end_label)) | |
393 | fec->label = label; | |
394 | else | |
395 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 396 | |
d62a17ae | 397 | return fec->label; |
28d58fd7 VV |
398 | } |
399 | ||
a64448ba DS |
400 | /* |
401 | * There is a change for this FEC. Install or uninstall label forwarding | |
402 | * entries, as appropriate. | |
403 | */ | |
d62a17ae | 404 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
405 | mpls_label_t old_label) | |
a64448ba | 406 | { |
d62a17ae | 407 | struct route_table *table; |
408 | struct route_node *rn; | |
409 | struct route_entry *re; | |
410 | afi_t afi; | |
a64448ba | 411 | |
d62a17ae | 412 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
413 | if (old_label != MPLS_INVALID_LABEL |
414 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 415 | lsp_uninstall(zvrf, old_label); |
a64448ba | 416 | |
d62a17ae | 417 | /* Install label forwarding entry corr. to new label, if needed. */ |
418 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 419 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 420 | return 0; |
a64448ba | 421 | |
d62a17ae | 422 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
423 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
424 | if (!table) | |
425 | return 0; | |
a64448ba | 426 | |
d62a17ae | 427 | /* See if labeled route exists. */ |
428 | rn = route_node_lookup(table, &fec->rn->p); | |
429 | if (!rn) | |
430 | return 0; | |
a64448ba | 431 | |
a2addae8 | 432 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 433 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
434 | break; | |
435 | } | |
a64448ba | 436 | |
d62a17ae | 437 | if (!re || !zebra_rib_labeled_unicast(re)) |
438 | return 0; | |
a64448ba | 439 | |
d62a17ae | 440 | if (lsp_install(zvrf, fec->label, rn, re)) |
441 | return -1; | |
a64448ba | 442 | |
d62a17ae | 443 | return 0; |
a64448ba DS |
444 | } |
445 | ||
5aba114a DS |
446 | /* |
447 | * Inform about FEC to a registered client. | |
448 | */ | |
d62a17ae | 449 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 450 | { |
d62a17ae | 451 | struct stream *s; |
452 | struct route_node *rn; | |
5aba114a | 453 | |
d62a17ae | 454 | rn = fec->rn; |
5aba114a | 455 | |
d62a17ae | 456 | /* Get output stream. */ |
1002497a | 457 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 458 | |
7cf15b25 | 459 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 460 | |
d62a17ae | 461 | stream_putw(s, rn->p.family); |
462 | stream_put_prefix(s, &rn->p); | |
463 | stream_putl(s, fec->label); | |
464 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 465 | return zserv_send_message(client, s); |
5aba114a DS |
466 | } |
467 | ||
468 | /* | |
469 | * Update all registered clients about this FEC. Caller should've updated | |
470 | * FEC and ensure no duplicate updates. | |
471 | */ | |
d62a17ae | 472 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 473 | { |
d62a17ae | 474 | struct listnode *node; |
475 | struct zserv *client; | |
5aba114a | 476 | |
d62a17ae | 477 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
478 | if (IS_ZEBRA_DEBUG_MPLS) | |
479 | zlog_debug("Update client %s", | |
480 | zebra_route_string(client->proto)); | |
481 | fec_send(fec, client); | |
482 | } | |
5aba114a DS |
483 | } |
484 | ||
485 | ||
f31e084c DS |
486 | /* |
487 | * Print a FEC-label binding entry. | |
488 | */ | |
d62a17ae | 489 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
490 | { | |
491 | struct route_node *rn; | |
492 | struct listnode *node; | |
493 | struct zserv *client; | |
494 | char buf[BUFSIZ]; | |
495 | ||
496 | rn = fec->rn; | |
497 | prefix2str(&rn->p, buf, BUFSIZ); | |
498 | vty_out(vty, "%s\n", buf); | |
499 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
500 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
501 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
502 | vty_out(vty, "\n"); | |
503 | if (!list_isempty(fec->client_list)) { | |
504 | vty_out(vty, " Client list:"); | |
505 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
506 | vty_out(vty, " %s(fd %d)", | |
507 | zebra_route_string(client->proto), | |
508 | client->sock); | |
509 | vty_out(vty, "\n"); | |
510 | } | |
f31e084c DS |
511 | } |
512 | ||
513 | /* | |
514 | * Locate FEC-label binding that matches with passed info. | |
515 | */ | |
d62a17ae | 516 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 517 | { |
d62a17ae | 518 | struct route_node *rn; |
f31e084c | 519 | |
d62a17ae | 520 | apply_mask(p); |
521 | rn = route_node_lookup(table, p); | |
522 | if (!rn) | |
523 | return NULL; | |
f31e084c | 524 | |
d62a17ae | 525 | route_unlock_node(rn); |
526 | return (rn->info); | |
f31e084c DS |
527 | } |
528 | ||
529 | /* | |
5aba114a DS |
530 | * Add a FEC. This may be upon a client registering for a binding |
531 | * or when a binding is configured. | |
f31e084c | 532 | */ |
d62a17ae | 533 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
534 | mpls_label_t label, uint32_t flags, |
535 | uint32_t label_index) | |
f31e084c | 536 | { |
d62a17ae | 537 | struct route_node *rn; |
538 | zebra_fec_t *fec; | |
f31e084c | 539 | |
d62a17ae | 540 | apply_mask(p); |
f31e084c | 541 | |
d62a17ae | 542 | /* Lookup (or add) route node.*/ |
543 | rn = route_node_get(table, p); | |
544 | if (!rn) | |
545 | return NULL; | |
f31e084c | 546 | |
d62a17ae | 547 | fec = rn->info; |
f31e084c | 548 | |
d62a17ae | 549 | if (!fec) { |
550 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 551 | |
d62a17ae | 552 | rn->info = fec; |
553 | fec->rn = rn; | |
554 | fec->label = label; | |
555 | fec->client_list = list_new(); | |
556 | } else | |
557 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 558 | |
d62a17ae | 559 | fec->label_index = label_index; |
560 | fec->flags = flags; | |
f31e084c | 561 | |
d62a17ae | 562 | return fec; |
f31e084c DS |
563 | } |
564 | ||
565 | /* | |
5aba114a DS |
566 | * Delete a FEC. This may be upon the last client deregistering for |
567 | * a FEC and no binding exists or when the binding is deleted and there | |
568 | * are no registered clients. | |
f31e084c | 569 | */ |
d62a17ae | 570 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 571 | { |
6a154c88 | 572 | list_delete(&fec->client_list); |
d62a17ae | 573 | fec->rn->info = NULL; |
574 | route_unlock_node(fec->rn); | |
575 | XFREE(MTYPE_FEC, fec); | |
576 | return 0; | |
f31e084c DS |
577 | } |
578 | ||
7758e3f3 | 579 | /* |
580 | * Hash function for label. | |
581 | */ | |
d8b87afe | 582 | static unsigned int label_hash(const void *p) |
7758e3f3 | 583 | { |
d62a17ae | 584 | const zebra_ile_t *ile = p; |
7758e3f3 | 585 | |
d62a17ae | 586 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 587 | } |
588 | ||
589 | /* | |
590 | * Compare 2 LSP hash entries based on in-label. | |
591 | */ | |
74df8d6d | 592 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 593 | { |
d62a17ae | 594 | const zebra_ile_t *ile1 = p1; |
595 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 596 | |
d62a17ae | 597 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 598 | } |
599 | ||
40c7bdb0 | 600 | /* |
601 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
602 | * the passed flag. | |
603 | * NOTE: Looking only for connected routes right now. | |
604 | */ | |
d62a17ae | 605 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
606 | struct nexthop *nexthop) | |
40c7bdb0 | 607 | { |
d62a17ae | 608 | struct route_table *table; |
609 | struct prefix_ipv4 p; | |
610 | struct route_node *rn; | |
611 | struct route_entry *match; | |
612 | struct nexthop *match_nh; | |
40c7bdb0 | 613 | |
4a7371e9 | 614 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 615 | if (!table) |
616 | return 0; | |
40c7bdb0 | 617 | |
d62a17ae | 618 | /* Lookup nexthop in IPv4 routing table. */ |
619 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
620 | p.family = AF_INET; | |
621 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
622 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 623 | |
d62a17ae | 624 | rn = route_node_match(table, (struct prefix *)&p); |
625 | if (!rn) | |
626 | return 0; | |
40c7bdb0 | 627 | |
d62a17ae | 628 | route_unlock_node(rn); |
88d88a9c | 629 | |
d62a17ae | 630 | /* Locate a valid connected route. */ |
a2addae8 | 631 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 632 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
633 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
634 | continue; | |
635 | ||
c415d895 | 636 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 637 | match_nh = match_nh->next) { |
638 | if (match->type == ZEBRA_ROUTE_CONNECT | |
639 | || nexthop->ifindex == match_nh->ifindex) { | |
640 | nexthop->ifindex = match_nh->ifindex; | |
641 | return 1; | |
642 | } | |
643 | } | |
88d88a9c | 644 | } |
40c7bdb0 | 645 | |
d62a17ae | 646 | return 0; |
40c7bdb0 | 647 | } |
648 | ||
649 | ||
650 | /* | |
651 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
652 | * the passed flag. | |
653 | * NOTE: Looking only for connected routes right now. | |
654 | */ | |
d62a17ae | 655 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
656 | struct nexthop *nexthop) | |
40c7bdb0 | 657 | { |
d62a17ae | 658 | struct route_table *table; |
659 | struct prefix_ipv6 p; | |
660 | struct route_node *rn; | |
661 | struct route_entry *match; | |
40c7bdb0 | 662 | |
4a7371e9 | 663 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 664 | if (!table) |
665 | return 0; | |
40c7bdb0 | 666 | |
d62a17ae | 667 | /* Lookup nexthop in IPv6 routing table. */ |
668 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
669 | p.family = AF_INET6; | |
670 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
671 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 672 | |
d62a17ae | 673 | rn = route_node_match(table, (struct prefix *)&p); |
674 | if (!rn) | |
675 | return 0; | |
40c7bdb0 | 676 | |
d62a17ae | 677 | route_unlock_node(rn); |
40c7bdb0 | 678 | |
d62a17ae | 679 | /* Locate a valid connected route. */ |
a2addae8 | 680 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 681 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
682 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
683 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
684 | break; | |
685 | } | |
40c7bdb0 | 686 | |
c415d895 | 687 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 688 | return 0; |
40c7bdb0 | 689 | |
c415d895 | 690 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 691 | return 1; |
40c7bdb0 | 692 | } |
693 | ||
694 | ||
695 | /* | |
696 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
697 | * or not. | |
698 | * NOTE: Each NHLFE points to only 1 nexthop. | |
699 | */ | |
d62a17ae | 700 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
701 | { | |
702 | struct nexthop *nexthop; | |
703 | struct interface *ifp; | |
86f07f44 | 704 | struct zebra_ns *zns; |
d62a17ae | 705 | |
706 | nexthop = nhlfe->nexthop; | |
707 | if (!nexthop) // unexpected | |
708 | return 0; | |
709 | ||
710 | /* Check on nexthop based on type. */ | |
711 | switch (nexthop->type) { | |
b9abd9ad DS |
712 | case NEXTHOP_TYPE_IFINDEX: |
713 | /* | |
714 | * Lookup if this type is special. The | |
715 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
716 | * forward into a different table for | |
717 | * processing. As such this ifindex | |
718 | * passed to us may be a VRF device | |
719 | * which will not be in the default | |
720 | * VRF. So let's look in all of them | |
721 | */ | |
86f07f44 PG |
722 | zns = zebra_ns_lookup(NS_DEFAULT); |
723 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
724 | if (ifp && if_is_operative(ifp)) |
725 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
726 | else | |
727 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
728 | break; | |
d62a17ae | 729 | case NEXTHOP_TYPE_IPV4: |
730 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
731 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
732 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
733 | else | |
734 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
735 | break; | |
736 | ||
737 | case NEXTHOP_TYPE_IPV6: | |
738 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
739 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
740 | else | |
741 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
742 | break; | |
743 | ||
744 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
745 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
746 | ifp = if_lookup_by_index(nexthop->ifindex, |
747 | nexthop->vrf_id); | |
d62a17ae | 748 | if (ifp && if_is_operative(ifp)) |
749 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
750 | else | |
751 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
752 | } else { | |
753 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
754 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
755 | else | |
756 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
757 | } | |
758 | break; | |
759 | ||
760 | default: | |
761 | break; | |
762 | } | |
763 | ||
764 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 765 | } |
766 | ||
767 | /* | |
768 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
769 | * reachability and select the best. Multipath entries are also | |
770 | * marked. This is invoked when an LSP scheduled for processing (due | |
771 | * to some change) is examined. | |
772 | */ | |
d62a17ae | 773 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
774 | { | |
775 | zebra_nhlfe_t *nhlfe; | |
776 | zebra_nhlfe_t *best; | |
777 | struct nexthop *nexthop; | |
778 | int changed = 0; | |
779 | ||
780 | if (!lsp) | |
781 | return; | |
782 | ||
783 | best = NULL; | |
784 | lsp->num_ecmp = 0; | |
785 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
786 | ||
787 | /* | |
788 | * First compute the best path, after checking nexthop status. We are | |
5e29e1a1 | 789 | * only concerned with non-deleted NHLFEs. |
d62a17ae | 790 | */ |
ee70f629 | 791 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 792 | /* Clear selection flags. */ |
793 | UNSET_FLAG(nhlfe->flags, | |
794 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
795 | ||
796 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
797 | && nhlfe_nexthop_active(nhlfe)) { | |
798 | if (!best || (nhlfe->distance < best->distance)) | |
799 | best = nhlfe; | |
800 | } | |
801 | } | |
802 | ||
803 | lsp->best_nhlfe = best; | |
804 | if (!lsp->best_nhlfe) | |
805 | return; | |
806 | ||
5e29e1a1 MS |
807 | /* |
808 | * Check the active status of backup nhlfes also | |
809 | */ | |
810 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
811 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
812 | (void)nhlfe_nexthop_active(nhlfe); | |
813 | } | |
814 | ||
d62a17ae | 815 | /* Mark best NHLFE as selected. */ |
816 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
817 | ||
818 | /* | |
819 | * If best path exists, see if there is ECMP. While doing this, note if | |
820 | * a | |
821 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
822 | * still selected has a change or an installed entry is to be removed. | |
823 | */ | |
ee70f629 | 824 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 825 | int nh_chg, nh_sel, nh_inst; |
826 | ||
827 | nexthop = nhlfe->nexthop; | |
828 | if (!nexthop) // unexpected | |
829 | continue; | |
830 | ||
831 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
832 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
833 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
834 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
835 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
836 | lsp->num_ecmp++; | |
837 | } | |
838 | ||
839 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
840 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
841 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
842 | nh_inst = | |
843 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
844 | ||
845 | if ((nh_sel && !nh_inst) | |
846 | || (nh_sel && nh_inst && nh_chg) | |
847 | || (nh_inst && !nh_sel)) | |
848 | changed = 1; | |
849 | } | |
850 | ||
851 | /* We have finished examining, clear changed flag. */ | |
852 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
853 | } | |
854 | ||
855 | if (changed) | |
856 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 857 | } |
858 | ||
859 | /* | |
860 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
861 | * process exit. | |
862 | */ | |
e3b78da8 | 863 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 864 | { |
d62a17ae | 865 | zebra_lsp_t *lsp; |
40c7bdb0 | 866 | |
e3b78da8 | 867 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 868 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 869 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 870 | } |
871 | ||
872 | /* | |
873 | * Schedule LSP forwarding entry for processing. Called upon changes | |
874 | * that may impact LSPs such as nexthop / connected route changes. | |
875 | */ | |
e3b78da8 | 876 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 877 | { |
d62a17ae | 878 | zebra_lsp_t *lsp; |
40c7bdb0 | 879 | |
e3b78da8 | 880 | lsp = (zebra_lsp_t *)bucket->data; |
0af35d90 | 881 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 882 | } |
883 | ||
884 | /* | |
885 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
886 | * any multipaths and update or delete from the kernel, as needed. | |
887 | */ | |
d62a17ae | 888 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
889 | { | |
890 | zebra_lsp_t *lsp; | |
891 | zebra_nhlfe_t *oldbest, *newbest; | |
892 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
893 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 894 | enum zebra_dplane_result res; |
d62a17ae | 895 | |
896 | lsp = (zebra_lsp_t *)data; | |
897 | if (!lsp) // unexpected | |
898 | return WQ_SUCCESS; | |
899 | ||
900 | oldbest = lsp->best_nhlfe; | |
901 | ||
902 | /* Select best NHLFE(s) */ | |
903 | lsp_select_best_nhlfe(lsp); | |
904 | ||
905 | newbest = lsp->best_nhlfe; | |
906 | ||
907 | if (IS_ZEBRA_DEBUG_MPLS) { | |
908 | if (oldbest) | |
5e29e1a1 | 909 | nhlfe2str(oldbest, buf, sizeof(buf)); |
d62a17ae | 910 | if (newbest) |
5e29e1a1 | 911 | nhlfe2str(newbest, buf2, sizeof(buf2)); |
d62a17ae | 912 | zlog_debug( |
3efd0893 | 913 | "Process LSP in-label %u oldbest %s newbest %s flags 0x%x ecmp# %d", |
d62a17ae | 914 | lsp->ile.in_label, oldbest ? buf : "NULL", |
915 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
916 | } | |
917 | ||
918 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
919 | /* Not already installed */ | |
920 | if (newbest) { | |
2b63430c DS |
921 | |
922 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
923 | |
924 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 925 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
926 | /* Set 'installed' flag so we will know |
927 | * that an install is in-flight. | |
928 | */ | |
929 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
930 | ||
931 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 932 | break; |
ea1c14f6 | 933 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
934 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
935 | "LSP Install Failure: %u", | |
936 | lsp->ile.in_label); | |
7c5d0e18 | 937 | break; |
ea1c14f6 | 938 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
939 | zvrf->lsp_installs++; |
940 | break; | |
941 | } | |
d62a17ae | 942 | } |
943 | } else { | |
944 | /* Installed, may need an update and/or delete. */ | |
945 | if (!newbest) { | |
d37f4d6c MS |
946 | res = dplane_lsp_delete(lsp); |
947 | ||
948 | /* We do some of the lsp cleanup immediately for | |
949 | * deletes. | |
950 | */ | |
951 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
952 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 953 | |
d37f4d6c | 954 | switch (res) { |
ea1c14f6 | 955 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 956 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 957 | break; |
ea1c14f6 | 958 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
959 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
960 | "LSP Deletion Failure: %u", | |
961 | lsp->ile.in_label); | |
7c5d0e18 | 962 | break; |
ea1c14f6 | 963 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
964 | zvrf->lsp_removals++; |
965 | break; | |
966 | } | |
d62a17ae | 967 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
968 | zebra_nhlfe_t *nhlfe; |
969 | struct nexthop *nexthop; | |
2b63430c DS |
970 | |
971 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
972 | |
973 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 974 | * so we know an update is in-flight. |
d37f4d6c | 975 | */ |
e6d44ec7 | 976 | |
9fa38ec6 DS |
977 | /* |
978 | * Any NHLFE that was installed but is not | |
979 | * selected now needs to have its flags updated. | |
980 | */ | |
ee70f629 | 981 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
9fa38ec6 DS |
982 | nexthop = nhlfe->nexthop; |
983 | if (!nexthop) | |
984 | continue; | |
985 | ||
986 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
987 | NHLFE_FLAG_INSTALLED) |
988 | && !CHECK_FLAG(nhlfe->flags, | |
989 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
990 | UNSET_FLAG(nhlfe->flags, |
991 | NHLFE_FLAG_INSTALLED); | |
992 | UNSET_FLAG(nexthop->flags, | |
993 | NEXTHOP_FLAG_FIB); | |
994 | } | |
995 | } | |
996 | ||
d37f4d6c | 997 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 998 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 999 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 1000 | break; |
ea1c14f6 | 1001 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
1002 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1003 | "LSP Update Failure: %u", | |
1004 | lsp->ile.in_label); | |
7c5d0e18 | 1005 | break; |
ea1c14f6 | 1006 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1007 | zvrf->lsp_installs++; |
1008 | break; | |
1009 | } | |
d62a17ae | 1010 | } |
1011 | } | |
1012 | ||
1013 | return WQ_SUCCESS; | |
40c7bdb0 | 1014 | } |
1015 | ||
1016 | ||
1017 | /* | |
1018 | * Callback upon processing completion of a LSP forwarding entry. | |
1019 | */ | |
d62a17ae | 1020 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1021 | { |
d62a17ae | 1022 | struct zebra_vrf *zvrf; |
1023 | zebra_lsp_t *lsp; | |
1024 | struct hash *lsp_table; | |
ee70f629 | 1025 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1026 | |
d62a17ae | 1027 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1028 | assert(zvrf); | |
40c7bdb0 | 1029 | |
d62a17ae | 1030 | lsp_table = zvrf->lsp_table; |
1031 | if (!lsp_table) // unexpected | |
1032 | return; | |
40c7bdb0 | 1033 | |
d62a17ae | 1034 | lsp = (zebra_lsp_t *)data; |
1035 | if (!lsp) // unexpected | |
1036 | return; | |
40c7bdb0 | 1037 | |
d62a17ae | 1038 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1039 | * exist, | |
1040 | * delete LSP entry also. | |
1041 | */ | |
1042 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1043 | |
ee70f629 | 1044 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1045 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) |
1046 | nhlfe_del(nhlfe); | |
1047 | } | |
40c7bdb0 | 1048 | |
1323491d MS |
1049 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1050 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1051 | nhlfe_del(nhlfe); | |
1052 | } | |
1053 | ||
1054 | lsp_check_free(lsp_table, &lsp); | |
40c7bdb0 | 1055 | } |
1056 | ||
1057 | /* | |
1058 | * Callback upon finishing the processing of all scheduled | |
1059 | * LSP forwarding entries. | |
1060 | */ | |
d62a17ae | 1061 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1062 | { |
d62a17ae | 1063 | /* Nothing to do for now. */ |
40c7bdb0 | 1064 | } |
1065 | ||
1066 | /* | |
1067 | * Add LSP forwarding entry to queue for subsequent processing. | |
1068 | */ | |
d62a17ae | 1069 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1070 | { |
d62a17ae | 1071 | /* If already scheduled, exit. */ |
1072 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1073 | return 0; | |
40c7bdb0 | 1074 | |
e2353ec2 | 1075 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1076 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1077 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1078 | return -1; |
1079 | } | |
33c32282 | 1080 | |
e2353ec2 | 1081 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1082 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1083 | return 0; | |
40c7bdb0 | 1084 | } |
1085 | ||
1086 | /* | |
1087 | * Callback to allocate LSP forwarding table entry. | |
1088 | */ | |
d62a17ae | 1089 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1090 | { |
d62a17ae | 1091 | const zebra_ile_t *ile = p; |
1092 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1093 | |
d62a17ae | 1094 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1095 | lsp->ile = *ile; | |
ee70f629 | 1096 | nhlfe_list_init(&lsp->nhlfe_list); |
cd4bb96f | 1097 | nhlfe_list_init(&lsp->backup_nhlfe_list); |
40c7bdb0 | 1098 | |
d62a17ae | 1099 | if (IS_ZEBRA_DEBUG_MPLS) |
1100 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1101 | |
d62a17ae | 1102 | return ((void *)lsp); |
40c7bdb0 | 1103 | } |
1104 | ||
1323491d MS |
1105 | /* |
1106 | * Check whether lsp can be freed - no nhlfes, e.g., and call free api | |
1107 | */ | |
1108 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1109 | { | |
1110 | zebra_lsp_t *lsp; | |
1111 | ||
1112 | if (plsp == NULL || *plsp == NULL) | |
1113 | return; | |
1114 | ||
1115 | lsp = *plsp; | |
1116 | ||
1117 | if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL) && | |
1118 | (nhlfe_list_first(&lsp->backup_nhlfe_list) == NULL) && | |
1119 | !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1120 | lsp_free(lsp_table, plsp); | |
1121 | } | |
1122 | ||
ebab422a MS |
1123 | /* |
1124 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1125 | * free LSP object. | |
1126 | */ | |
1127 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1128 | { | |
1129 | zebra_lsp_t *lsp; | |
ee70f629 | 1130 | zebra_nhlfe_t *nhlfe; |
ebab422a MS |
1131 | |
1132 | if (plsp == NULL || *plsp == NULL) | |
1133 | return; | |
1134 | ||
1135 | lsp = *plsp; | |
1136 | ||
1137 | if (IS_ZEBRA_DEBUG_MPLS) | |
1138 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1139 | lsp->ile.in_label, lsp->flags); | |
1140 | ||
1141 | /* Free nhlfes, if any. */ | |
ee70f629 | 1142 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
ebab422a | 1143 | nhlfe_del(nhlfe); |
ebab422a | 1144 | |
cd4bb96f MS |
1145 | /* Free backup nhlfes, if any. */ |
1146 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) | |
1147 | nhlfe_del(nhlfe); | |
1148 | ||
ebab422a MS |
1149 | hash_release(lsp_table, &lsp->ile); |
1150 | XFREE(MTYPE_LSP, lsp); | |
1151 | ||
1152 | *plsp = NULL; | |
1153 | } | |
1154 | ||
40c7bdb0 | 1155 | /* |
1156 | * Create printable string for NHLFE entry. | |
1157 | */ | |
608a57c0 | 1158 | static char *nhlfe2str(const zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1159 | { |
608a57c0 | 1160 | const struct nexthop *nexthop; |
40c7bdb0 | 1161 | |
d62a17ae | 1162 | buf[0] = '\0'; |
1163 | nexthop = nhlfe->nexthop; | |
1164 | switch (nexthop->type) { | |
1165 | case NEXTHOP_TYPE_IPV4: | |
1166 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1167 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1168 | break; | |
1169 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1170 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1171 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1172 | break; | |
b9abd9ad DS |
1173 | case NEXTHOP_TYPE_IFINDEX: |
1174 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1175 | default: |
1176 | break; | |
1177 | } | |
40c7bdb0 | 1178 | |
d62a17ae | 1179 | return buf; |
40c7bdb0 | 1180 | } |
1181 | ||
1182 | /* | |
1183 | * Check if NHLFE matches with search info passed. | |
1184 | */ | |
d62a17ae | 1185 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1186 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1187 | { |
d62a17ae | 1188 | struct nexthop *nhop; |
1189 | int cmp = 1; | |
40c7bdb0 | 1190 | |
d62a17ae | 1191 | nhop = nhlfe->nexthop; |
1192 | if (!nhop) | |
1193 | return 1; | |
40c7bdb0 | 1194 | |
d62a17ae | 1195 | if (nhop->type != gtype) |
1196 | return 1; | |
40c7bdb0 | 1197 | |
d62a17ae | 1198 | switch (nhop->type) { |
1199 | case NEXTHOP_TYPE_IPV4: | |
1200 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1201 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1202 | sizeof(struct in_addr)); | |
1203 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1204 | cmp = !(nhop->ifindex == ifindex); | |
1205 | break; | |
1206 | case NEXTHOP_TYPE_IPV6: | |
1207 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1208 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1209 | sizeof(struct in6_addr)); | |
1210 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1211 | cmp = !(nhop->ifindex == ifindex); | |
1212 | break; | |
b9abd9ad DS |
1213 | case NEXTHOP_TYPE_IFINDEX: |
1214 | cmp = !(nhop->ifindex == ifindex); | |
1215 | break; | |
d62a17ae | 1216 | default: |
1217 | break; | |
1218 | } | |
40c7bdb0 | 1219 | |
d62a17ae | 1220 | return cmp; |
40c7bdb0 | 1221 | } |
1222 | ||
1223 | ||
1224 | /* | |
1225 | * Locate NHLFE that matches with passed info. | |
1226 | */ | |
ee70f629 MS |
1227 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
1228 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
1229 | enum nexthop_types_t gtype, |
1230 | const union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1231 | { |
d62a17ae | 1232 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1233 | |
ee70f629 | 1234 | frr_each_safe(nhlfe_list, list, nhlfe) { |
d62a17ae | 1235 | if (nhlfe->type != lsp_type) |
1236 | continue; | |
1237 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1238 | break; | |
1239 | } | |
40c7bdb0 | 1240 | |
d62a17ae | 1241 | return nhlfe; |
40c7bdb0 | 1242 | } |
1243 | ||
ee70f629 MS |
1244 | /* |
1245 | * Allocate and init new NHLFE. | |
1246 | */ | |
cd4bb96f MS |
1247 | static zebra_nhlfe_t *nhlfe_alloc(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1248 | enum nexthop_types_t gtype, | |
1249 | const union g_addr *gate, ifindex_t ifindex, | |
1250 | uint8_t num_labels, | |
1251 | const mpls_label_t *labels) | |
d62a17ae | 1252 | { |
1253 | zebra_nhlfe_t *nhlfe; | |
1254 | struct nexthop *nexthop; | |
1255 | ||
3e0a9b40 | 1256 | assert(lsp); |
d62a17ae | 1257 | |
1258 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1259 | |
1260 | nhlfe->lsp = lsp; | |
1261 | nhlfe->type = lsp_type; | |
1262 | nhlfe->distance = lsp_distance(lsp_type); | |
1263 | ||
1264 | nexthop = nexthop_new(); | |
cd4bb96f | 1265 | |
5065db0a | 1266 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1267 | |
4a7371e9 | 1268 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1269 | nexthop->type = gtype; |
1270 | switch (nexthop->type) { | |
1271 | case NEXTHOP_TYPE_IPV4: | |
1272 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1273 | nexthop->gate.ipv4 = gate->ipv4; | |
1274 | if (ifindex) | |
1275 | nexthop->ifindex = ifindex; | |
1276 | break; | |
1277 | case NEXTHOP_TYPE_IPV6: | |
1278 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1279 | nexthop->gate.ipv6 = gate->ipv6; | |
1280 | if (ifindex) | |
1281 | nexthop->ifindex = ifindex; | |
1282 | break; | |
b9abd9ad DS |
1283 | case NEXTHOP_TYPE_IFINDEX: |
1284 | nexthop->ifindex = ifindex; | |
1285 | break; | |
d62a17ae | 1286 | default: |
1287 | nexthop_free(nexthop); | |
1288 | XFREE(MTYPE_NHLFE, nhlfe); | |
1289 | return NULL; | |
d62a17ae | 1290 | } |
d62a17ae | 1291 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1292 | |
1293 | return nhlfe; | |
1294 | } | |
1295 | ||
1296 | /* | |
cc1b9746 MS |
1297 | * Add primary or backup NHLFE. Base entry must have been created and |
1298 | * duplicate check done. | |
ee70f629 MS |
1299 | */ |
1300 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
1301 | enum nexthop_types_t gtype, | |
1302 | const union g_addr *gate, ifindex_t ifindex, | |
cc1b9746 MS |
1303 | uint8_t num_labels, const mpls_label_t *labels, |
1304 | bool is_backup) | |
ee70f629 MS |
1305 | { |
1306 | zebra_nhlfe_t *nhlfe; | |
1307 | ||
1308 | if (!lsp) | |
1309 | return NULL; | |
1310 | ||
1311 | /* Allocate new object */ | |
cd4bb96f MS |
1312 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1313 | labels); | |
1314 | ||
cc1b9746 MS |
1315 | /* Enqueue to LSP: primaries at head of list, backups at tail */ |
1316 | if (is_backup) { | |
1317 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
1318 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); | |
1319 | } else | |
1320 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); | |
d62a17ae | 1321 | |
1322 | return nhlfe; | |
40c7bdb0 | 1323 | } |
1324 | ||
1325 | /* | |
cd4bb96f MS |
1326 | * Common delete for NHLFEs. |
1327 | */ | |
1328 | static void nhlfe_free(zebra_nhlfe_t *nhlfe) | |
1329 | { | |
1330 | if (!nhlfe) | |
1331 | return; | |
1332 | ||
1333 | /* Free nexthop. */ | |
1334 | if (nhlfe->nexthop) | |
1335 | nexthop_free(nhlfe->nexthop); | |
1336 | ||
1337 | nhlfe->nexthop = NULL; | |
1338 | ||
1339 | XFREE(MTYPE_NHLFE, nhlfe); | |
1340 | } | |
1341 | ||
1342 | ||
1343 | /* | |
1344 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1345 | */ |
d62a17ae | 1346 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1347 | { |
d62a17ae | 1348 | zebra_lsp_t *lsp; |
40c7bdb0 | 1349 | |
d62a17ae | 1350 | if (!nhlfe) |
1351 | return -1; | |
40c7bdb0 | 1352 | |
d62a17ae | 1353 | lsp = nhlfe->lsp; |
1354 | if (!lsp) | |
1355 | return -1; | |
40c7bdb0 | 1356 | |
d62a17ae | 1357 | if (nhlfe == lsp->best_nhlfe) |
1358 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1359 | |
ee70f629 | 1360 | /* Unlink from LSP */ |
cd4bb96f MS |
1361 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1362 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1363 | else | |
1364 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1365 | |
cd4bb96f MS |
1366 | nhlfe->lsp = NULL; |
1367 | ||
1368 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1369 | |
d62a17ae | 1370 | return 0; |
40c7bdb0 | 1371 | } |
1372 | ||
a64448ba DS |
1373 | /* |
1374 | * Update label for NHLFE entry. | |
1375 | */ | |
d62a17ae | 1376 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1377 | struct mpls_label_stack *nh_label) |
d62a17ae | 1378 | { |
1379 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1380 | } | |
1381 | ||
1382 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1383 | enum lsp_types_t type) | |
1384 | { | |
ee70f629 | 1385 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 1386 | int schedule_lsp = 0; |
1387 | char buf[BUFSIZ]; | |
1388 | ||
4a2a5236 MS |
1389 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1390 | schedule_lsp = 1; | |
1391 | ||
d62a17ae | 1392 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ |
ee70f629 | 1393 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1394 | /* Skip non-static NHLFEs */ |
1395 | if (nhlfe->type != type) | |
1396 | continue; | |
1397 | ||
1398 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1399 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 1400 | zlog_debug( |
1401 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1402 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1403 | } | |
1404 | ||
1405 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1406 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1407 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1408 | schedule_lsp = 1; | |
1409 | } else { | |
1410 | nhlfe_del(nhlfe); | |
1411 | } | |
1412 | } | |
1413 | ||
f2e7f4eb MS |
1414 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1415 | /* Skip non-static NHLFEs */ | |
1416 | if (nhlfe->type != type) | |
1417 | continue; | |
1418 | ||
1419 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1420 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
f2e7f4eb MS |
1421 | zlog_debug( |
1422 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1423 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1424 | } | |
1425 | ||
1426 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1427 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1428 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1429 | schedule_lsp = 1; | |
1430 | } else { | |
1431 | nhlfe_del(nhlfe); | |
1432 | } | |
1433 | } | |
1434 | ||
d62a17ae | 1435 | /* Queue LSP for processing, if needed, else delete. */ |
1436 | if (schedule_lsp) { | |
4a2a5236 MS |
1437 | if (IS_ZEBRA_DEBUG_MPLS) { |
1438 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
1439 | lsp->ile.in_label, lsp->flags); | |
1440 | } | |
d62a17ae | 1441 | if (lsp_processq_add(lsp)) |
1442 | return -1; | |
1323491d MS |
1443 | } else { |
1444 | lsp_check_free(lsp_table, &lsp); | |
1445 | } | |
d62a17ae | 1446 | |
1447 | return 0; | |
40c7bdb0 | 1448 | } |
1449 | ||
ce549947 RW |
1450 | /* |
1451 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1452 | * If no other NHLFEs exist, the entry would be deleted. | |
1453 | */ | |
d62a17ae | 1454 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1455 | mpls_label_t in_label) | |
ce549947 | 1456 | { |
d62a17ae | 1457 | struct hash *lsp_table; |
1458 | zebra_ile_t tmp_ile; | |
1459 | zebra_lsp_t *lsp; | |
ce549947 | 1460 | |
d62a17ae | 1461 | /* Lookup table. */ |
1462 | lsp_table = zvrf->lsp_table; | |
1463 | if (!lsp_table) | |
1464 | return -1; | |
ce549947 | 1465 | |
d62a17ae | 1466 | /* If entry is not present, exit. */ |
1467 | tmp_ile.in_label = in_label; | |
1468 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1469 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1470 | return 0; |
ce549947 | 1471 | |
d62a17ae | 1472 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1473 | } |
1474 | ||
d62a17ae | 1475 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1476 | { |
d62a17ae | 1477 | char buf[BUFSIZ]; |
1478 | json_object *json_nhlfe = NULL; | |
3c0e1622 | 1479 | json_object *json_backups = NULL; |
31f937fb | 1480 | json_object *json_label_stack; |
d62a17ae | 1481 | struct nexthop *nexthop = nhlfe->nexthop; |
3c0e1622 | 1482 | int i; |
b78b820d | 1483 | |
d62a17ae | 1484 | json_nhlfe = json_object_new_object(); |
1485 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1486 | json_object_int_add(json_nhlfe, "outLabel", | |
1487 | nexthop->nh_label->label[0]); | |
31f937fb SM |
1488 | |
1489 | json_label_stack = json_object_new_array(); | |
1490 | json_object_object_add(json_nhlfe, "outLabelStack", json_label_stack); | |
1491 | for (i = 0; i < nexthop->nh_label->num_labels; i++) | |
1492 | json_object_array_add( | |
1493 | json_label_stack, | |
1494 | json_object_new_int(nexthop->nh_label->label[i])); | |
1495 | ||
d62a17ae | 1496 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); |
b78b820d | 1497 | |
d62a17ae | 1498 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1499 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1500 | |
d62a17ae | 1501 | switch (nexthop->type) { |
1502 | case NEXTHOP_TYPE_IPV4: | |
1503 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1504 | json_object_string_add(json_nhlfe, "nexthop", | |
9bcef951 MS |
1505 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
1506 | buf, sizeof(buf))); | |
d62a17ae | 1507 | break; |
1508 | case NEXTHOP_TYPE_IPV6: | |
1509 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1510 | json_object_string_add( | |
1511 | json_nhlfe, "nexthop", | |
1512 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1513 | ||
1514 | if (nexthop->ifindex) | |
4a7371e9 DS |
1515 | json_object_string_add(json_nhlfe, "interface", |
1516 | ifindex2ifname(nexthop->ifindex, | |
1517 | nexthop->vrf_id)); | |
d62a17ae | 1518 | break; |
1519 | default: | |
1520 | break; | |
1521 | } | |
3c0e1622 MS |
1522 | |
1523 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
1524 | json_backups = json_object_new_array(); | |
1525 | for (i = 0; i < nexthop->backup_num; i++) { | |
1526 | json_object_array_add( | |
1527 | json_backups, | |
1528 | json_object_new_int(nexthop->backup_idx[i])); | |
1529 | } | |
1530 | ||
1531 | json_object_object_add(json_nhlfe, "backupIndex", | |
1532 | json_backups); | |
1533 | } | |
1534 | ||
d62a17ae | 1535 | return json_nhlfe; |
b78b820d | 1536 | } |
1537 | ||
3ab18ff2 | 1538 | /* |
1539 | * Print the NHLFE for a LSP forwarding entry. | |
1540 | */ | |
3c0e1622 MS |
1541 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty, |
1542 | const char *indent) | |
d62a17ae | 1543 | { |
1544 | struct nexthop *nexthop; | |
a29c2887 | 1545 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1546 | |
1547 | nexthop = nhlfe->nexthop; | |
1548 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1549 | return; | |
1550 | ||
1551 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1552 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1553 | mpls_label2str(nexthop->nh_label->num_labels, |
1554 | nexthop->nh_label->label, | |
1555 | buf, sizeof(buf), 0), | |
d62a17ae | 1556 | nhlfe->distance); |
3c0e1622 MS |
1557 | |
1558 | if (indent) | |
1559 | vty_out(vty, "%s", indent); | |
1560 | ||
d62a17ae | 1561 | switch (nexthop->type) { |
1562 | case NEXTHOP_TYPE_IPV4: | |
1563 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
9bcef951 | 1564 | vty_out(vty, " via %pI4", &nexthop->gate.ipv4); |
d62a17ae | 1565 | if (nexthop->ifindex) |
1566 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1567 | ifindex2ifname(nexthop->ifindex, |
1568 | nexthop->vrf_id)); | |
d62a17ae | 1569 | break; |
1570 | case NEXTHOP_TYPE_IPV6: | |
1571 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1572 | vty_out(vty, " via %s", | |
2896f40e MS |
1573 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
1574 | sizeof(buf))); | |
d62a17ae | 1575 | if (nexthop->ifindex) |
1576 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1577 | ifindex2ifname(nexthop->ifindex, |
1578 | nexthop->vrf_id)); | |
d62a17ae | 1579 | break; |
1580 | default: | |
1581 | break; | |
1582 | } | |
5e29e1a1 MS |
1583 | vty_out(vty, "%s", |
1584 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)" | |
1585 | : ""); | |
996c9314 LB |
1586 | vty_out(vty, "%s", |
1587 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1588 | : ""); | |
d62a17ae | 1589 | vty_out(vty, "\n"); |
3ab18ff2 | 1590 | } |
1591 | ||
1592 | /* | |
1593 | * Print an LSP forwarding entry. | |
1594 | */ | |
a29c2887 | 1595 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp) |
3ab18ff2 | 1596 | { |
a29c2887 | 1597 | zebra_nhlfe_t *nhlfe, *backup; |
474aebd9 | 1598 | int i, j; |
3ab18ff2 | 1599 | |
d62a17ae | 1600 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1601 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1602 | : ""); | |
3ab18ff2 | 1603 | |
a29c2887 | 1604 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3c0e1622 | 1605 | nhlfe_print(nhlfe, vty, NULL); |
a29c2887 | 1606 | |
3c0e1622 | 1607 | if (nhlfe->nexthop == NULL || |
474aebd9 MS |
1608 | !CHECK_FLAG(nhlfe->nexthop->flags, |
1609 | NEXTHOP_FLAG_HAS_BACKUP)) | |
1610 | continue; | |
a29c2887 | 1611 | |
474aebd9 | 1612 | /* Backup nhlfes: find backups in backup list */ |
a29c2887 | 1613 | |
474aebd9 | 1614 | for (j = 0; j < nhlfe->nexthop->backup_num; j++) { |
a29c2887 | 1615 | i = 0; |
5e29e1a1 | 1616 | backup = NULL; |
a29c2887 | 1617 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { |
474aebd9 | 1618 | if (i == nhlfe->nexthop->backup_idx[j]) |
a29c2887 MS |
1619 | break; |
1620 | i++; | |
1621 | } | |
1622 | ||
1623 | if (backup) { | |
1624 | vty_out(vty, " [backup %d]", i); | |
3c0e1622 | 1625 | nhlfe_print(backup, vty, " "); |
a29c2887 MS |
1626 | } |
1627 | } | |
1628 | } | |
3ab18ff2 | 1629 | } |
1630 | ||
1631 | /* | |
b78b820d | 1632 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1633 | */ |
d62a17ae | 1634 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1635 | { |
d62a17ae | 1636 | zebra_nhlfe_t *nhlfe = NULL; |
1637 | json_object *json = json_object_new_object(); | |
1638 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1639 | |
d62a17ae | 1640 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1641 | |
d62a17ae | 1642 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1643 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1644 | |
ee70f629 | 1645 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1646 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1647 | |
d62a17ae | 1648 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
3c0e1622 MS |
1649 | json_nhlfe_list = NULL; |
1650 | ||
1651 | ||
1652 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
1653 | if (json_nhlfe_list == NULL) | |
1654 | json_nhlfe_list = json_object_new_array(); | |
1655 | ||
1656 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
1657 | } | |
1658 | ||
1659 | if (json_nhlfe_list) | |
1660 | json_object_object_add(json, "backupNexthops", json_nhlfe_list); | |
1661 | ||
d62a17ae | 1662 | return json; |
b78b820d | 1663 | } |
1664 | ||
1665 | ||
1666 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1667 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1668 | { |
d62a17ae | 1669 | unsigned int i; |
e3b78da8 | 1670 | struct hash_bucket *hb; |
d62a17ae | 1671 | struct list *sorted_list = list_new(); |
b78b820d | 1672 | |
d62a17ae | 1673 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1674 | |
d62a17ae | 1675 | for (i = 0; i < hash->size; i++) |
1676 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1677 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1678 | |
d62a17ae | 1679 | return sorted_list; |
3ab18ff2 | 1680 | } |
1681 | ||
7758e3f3 | 1682 | /* |
b78b820d | 1683 | * Compare two LSPs based on their label values. |
7758e3f3 | 1684 | */ |
e4a1ec74 | 1685 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1686 | { |
d62a17ae | 1687 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1688 | return -1; | |
7758e3f3 | 1689 | |
d62a17ae | 1690 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1691 | return 1; | |
7758e3f3 | 1692 | |
d62a17ae | 1693 | return 0; |
7758e3f3 | 1694 | } |
1695 | ||
40c7bdb0 | 1696 | /* |
1697 | * Initialize work queue for processing changed LSPs. | |
1698 | */ | |
2561d12e | 1699 | static int mpls_processq_init(void) |
40c7bdb0 | 1700 | { |
e2353ec2 DS |
1701 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1702 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1703 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1704 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1705 | return -1; |
1706 | } | |
40c7bdb0 | 1707 | |
e2353ec2 DS |
1708 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1709 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1710 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1711 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1712 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1713 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1714 | |
d62a17ae | 1715 | return 0; |
40c7bdb0 | 1716 | } |
1717 | ||
7758e3f3 | 1718 | |
d37f4d6c MS |
1719 | /* |
1720 | * Process LSP update results from zebra dataplane. | |
1721 | */ | |
1722 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1723 | { | |
1724 | struct zebra_vrf *zvrf; | |
31f937fb | 1725 | mpls_label_t label; |
d37f4d6c MS |
1726 | zebra_ile_t tmp_ile; |
1727 | struct hash *lsp_table; | |
1728 | zebra_lsp_t *lsp; | |
1729 | zebra_nhlfe_t *nhlfe; | |
1730 | struct nexthop *nexthop; | |
1731 | enum dplane_op_e op; | |
8841f96e | 1732 | enum zebra_dplane_result status; |
31f937fb | 1733 | enum zebra_sr_policy_update_label_mode update_mode; |
d37f4d6c MS |
1734 | |
1735 | op = dplane_ctx_get_op(ctx); | |
1736 | status = dplane_ctx_get_status(ctx); | |
1737 | ||
1738 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1739 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1740 | ctx, dplane_op2str(op), | |
1741 | dplane_ctx_get_in_label(ctx), | |
1742 | dplane_res2str(status)); | |
1743 | ||
31f937fb SM |
1744 | label = dplane_ctx_get_in_label(ctx); |
1745 | ||
d37f4d6c MS |
1746 | switch (op) { |
1747 | case DPLANE_OP_LSP_INSTALL: | |
1748 | case DPLANE_OP_LSP_UPDATE: | |
1749 | /* Look for zebra LSP object */ | |
1750 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1751 | if (zvrf == NULL) | |
1752 | break; | |
1753 | ||
1754 | lsp_table = zvrf->lsp_table; | |
1755 | ||
31f937fb | 1756 | tmp_ile.in_label = label; |
d37f4d6c MS |
1757 | lsp = hash_lookup(lsp_table, &tmp_ile); |
1758 | if (lsp == NULL) { | |
1759 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1760 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1761 | ctx, dplane_ctx_get_in_label(ctx)); | |
1762 | break; | |
1763 | } | |
1764 | ||
1765 | /* TODO -- Confirm that this result is still 'current' */ | |
1766 | ||
c3753405 | 1767 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1768 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1769 | clear_nhlfe_installed(lsp); | |
1770 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1771 | "LSP Install Failure: in-label %u", | |
1772 | lsp->ile.in_label); | |
c3753405 MS |
1773 | break; |
1774 | } | |
1775 | ||
1776 | /* Update zebra object */ | |
1777 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1778 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
1779 | nexthop = nhlfe->nexthop; | |
1780 | if (!nexthop) | |
1781 | continue; | |
1782 | ||
1783 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) && | |
1784 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) { | |
1785 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1786 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1787 | } | |
d37f4d6c MS |
1788 | } |
1789 | ||
31f937fb SM |
1790 | update_mode = (op == DPLANE_OP_LSP_INSTALL) |
1791 | ? ZEBRA_SR_POLICY_LABEL_CREATED | |
1792 | : ZEBRA_SR_POLICY_LABEL_UPDATED; | |
1793 | zebra_sr_policy_label_update(label, update_mode); | |
d37f4d6c MS |
1794 | break; |
1795 | ||
1796 | case DPLANE_OP_LSP_DELETE: | |
31f937fb | 1797 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
3fd385c6 DS |
1798 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
1799 | "LSP Deletion Failure: in-label %u", | |
1800 | dplane_ctx_get_in_label(ctx)); | |
31f937fb SM |
1801 | break; |
1802 | } | |
1803 | zebra_sr_policy_label_update(label, | |
1804 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
d37f4d6c MS |
1805 | break; |
1806 | ||
1807 | default: | |
1808 | break; | |
1809 | ||
1810 | } /* Switch */ | |
1811 | ||
1812 | dplane_ctx_fini(&ctx); | |
1813 | } | |
1814 | ||
104e3ad9 | 1815 | /* |
68110c42 MS |
1816 | * Process LSP installation info from two sets of nhlfes: a set from |
1817 | * a dplane notification, and a set from the zebra LSP object. Update | |
1818 | * counters of installed nexthops, and return whether the LSP has changed. | |
104e3ad9 | 1819 | */ |
68110c42 MS |
1820 | static bool compare_notif_nhlfes(const struct nhlfe_list_head *ctx_head, |
1821 | struct nhlfe_list_head *nhlfe_head, | |
1822 | int *start_counter, int *end_counter) | |
104e3ad9 | 1823 | { |
104e3ad9 MS |
1824 | zebra_nhlfe_t *nhlfe; |
1825 | const zebra_nhlfe_t *ctx_nhlfe; | |
1826 | struct nexthop *nexthop; | |
1827 | const struct nexthop *ctx_nexthop; | |
68110c42 | 1828 | int start_count = 0, end_count = 0; |
188a00e0 | 1829 | bool changed_p = false; |
104e3ad9 MS |
1830 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1831 | ||
68110c42 | 1832 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { |
104e3ad9 MS |
1833 | char buf[NEXTHOP_STRLEN]; |
1834 | ||
1835 | nexthop = nhlfe->nexthop; | |
1836 | if (!nexthop) | |
1837 | continue; | |
1838 | ||
1839 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1840 | start_count++; | |
1841 | ||
68110c42 | 1842 | ctx_nhlfe = NULL; |
104e3ad9 | 1843 | ctx_nexthop = NULL; |
68110c42 | 1844 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
104e3ad9 MS |
1845 | ctx_nexthop = ctx_nhlfe->nexthop; |
1846 | if (!ctx_nexthop) | |
1847 | continue; | |
1848 | ||
1849 | if ((ctx_nexthop->type == nexthop->type) && | |
1850 | nexthop_same(ctx_nexthop, nexthop)) { | |
1851 | /* Matched */ | |
1852 | break; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | if (is_debug) | |
1857 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1858 | ||
1859 | if (ctx_nhlfe && ctx_nexthop) { | |
1860 | if (is_debug) { | |
1861 | const char *tstr = ""; | |
1862 | ||
1863 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1864 | NHLFE_FLAG_INSTALLED)) | |
1865 | tstr = "not "; | |
1866 | ||
1867 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1868 | buf, tstr); | |
1869 | } | |
1870 | ||
188a00e0 | 1871 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1872 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1873 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1874 | |
1875 | if (!CHECK_FLAG(nhlfe->flags, | |
1876 | NHLFE_FLAG_INSTALLED)) | |
1877 | changed_p = true; | |
104e3ad9 MS |
1878 | |
1879 | /* Update counter */ | |
1880 | end_count++; | |
188a00e0 MS |
1881 | } else { |
1882 | ||
1883 | if (CHECK_FLAG(nhlfe->flags, | |
1884 | NHLFE_FLAG_INSTALLED)) | |
1885 | changed_p = true; | |
1886 | } | |
1887 | ||
1888 | } else { | |
1889 | /* Not mentioned in lfib set -> uninstalled */ | |
1890 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1891 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1892 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1893 | changed_p = true; | |
1894 | } | |
1895 | ||
1896 | if (is_debug) | |
1897 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1898 | buf); | |
1899 | } | |
1900 | } | |
1901 | ||
68110c42 MS |
1902 | if (start_counter) |
1903 | *start_counter += start_count; | |
1904 | if (end_counter) | |
1905 | *end_counter += end_count; | |
188a00e0 | 1906 | |
68110c42 MS |
1907 | return changed_p; |
1908 | } | |
188a00e0 | 1909 | |
68110c42 MS |
1910 | /* |
1911 | * Update an lsp nhlfe list from a dplane context, typically an async | |
1912 | * notification context. Update the LSP list to match the installed | |
1913 | * status from the context's list. | |
1914 | */ | |
1915 | static int update_nhlfes_from_ctx(struct nhlfe_list_head *nhlfe_head, | |
1916 | const struct nhlfe_list_head *ctx_head) | |
1917 | { | |
1918 | int ret = 0; | |
1919 | zebra_nhlfe_t *nhlfe; | |
1920 | const zebra_nhlfe_t *ctx_nhlfe; | |
1921 | struct nexthop *nexthop; | |
1922 | const struct nexthop *ctx_nexthop; | |
1923 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
1924 | ||
1925 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { | |
188a00e0 MS |
1926 | char buf[NEXTHOP_STRLEN]; |
1927 | ||
1928 | nexthop = nhlfe->nexthop; | |
1929 | if (!nexthop) | |
1930 | continue; | |
1931 | ||
c3753405 | 1932 | ctx_nhlfe = NULL; |
188a00e0 | 1933 | ctx_nexthop = NULL; |
c3753405 | 1934 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
188a00e0 MS |
1935 | ctx_nexthop = ctx_nhlfe->nexthop; |
1936 | if (!ctx_nexthop) | |
1937 | continue; | |
1938 | ||
1939 | if ((ctx_nexthop->type == nexthop->type) && | |
1940 | nexthop_same(ctx_nexthop, nexthop)) { | |
1941 | /* Matched */ | |
1942 | break; | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | if (is_debug) | |
1947 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1948 | ||
1949 | if (ctx_nhlfe && ctx_nexthop) { | |
1950 | ||
1951 | /* Bring zebra nhlfe install state into sync */ | |
1952 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1953 | NHLFE_FLAG_INSTALLED)) { | |
c3753405 MS |
1954 | if (is_debug) |
1955 | zlog_debug("%s: matched lsp nhlfe %s (installed)", | |
1956 | __func__, buf); | |
188a00e0 MS |
1957 | |
1958 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
00a9b150 | 1959 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 MS |
1960 | |
1961 | } else { | |
c3753405 MS |
1962 | if (is_debug) |
1963 | zlog_debug("%s: matched lsp nhlfe %s (not installed)", | |
1964 | __func__, buf); | |
188a00e0 | 1965 | |
104e3ad9 | 1966 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1967 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 | 1968 | } |
104e3ad9 MS |
1969 | |
1970 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
1971 | NEXTHOP_FLAG_FIB)) { |
1972 | SET_FLAG(nhlfe->nexthop->flags, | |
1973 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1974 | SET_FLAG(nhlfe->nexthop->flags, |
1975 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1976 | } else { |
1977 | UNSET_FLAG(nhlfe->nexthop->flags, | |
1978 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1979 | UNSET_FLAG(nhlfe->nexthop->flags, |
1980 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1981 | } |
1982 | ||
104e3ad9 MS |
1983 | } else { |
1984 | /* Not mentioned in lfib set -> uninstalled */ | |
c3753405 MS |
1985 | if (is_debug) |
1986 | zlog_debug("%s: no match for lsp nhlfe %s", | |
1987 | __func__, buf); | |
104e3ad9 | 1988 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1989 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
104e3ad9 | 1990 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
188a00e0 | 1991 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
1992 | } |
1993 | } | |
1994 | ||
68110c42 MS |
1995 | return ret; |
1996 | } | |
1997 | ||
1998 | /* | |
1999 | * Process async dplane notifications. | |
2000 | */ | |
2001 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2002 | { | |
2003 | struct zebra_vrf *zvrf; | |
2004 | zebra_ile_t tmp_ile; | |
2005 | struct hash *lsp_table; | |
2006 | zebra_lsp_t *lsp; | |
2007 | const struct nhlfe_list_head *ctx_list; | |
2008 | int start_count = 0, end_count = 0; /* Installed counts */ | |
2009 | bool changed_p = false; | |
2010 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
2011 | ||
2012 | if (is_debug) | |
2013 | zlog_debug("LSP dplane notif, in-label %u", | |
2014 | dplane_ctx_get_in_label(ctx)); | |
2015 | ||
2016 | /* Look for zebra LSP object */ | |
2017 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
2018 | if (zvrf == NULL) | |
2019 | goto done; | |
2020 | ||
2021 | lsp_table = zvrf->lsp_table; | |
2022 | ||
2023 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
2024 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2025 | if (lsp == NULL) { | |
2026 | if (is_debug) | |
2027 | zlog_debug("dplane LSP notif: in-label %u not found", | |
2028 | dplane_ctx_get_in_label(ctx)); | |
2029 | goto done; | |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * The dataplane/forwarding plane is notifying zebra about the state | |
2034 | * of the nexthops associated with this LSP. First, we take a | |
2035 | * pre-scan pass to determine whether the LSP has transitioned | |
2036 | * from installed -> uninstalled. In that case, we need to have | |
2037 | * the existing state of the LSP objects available before making | |
2038 | * any changes. | |
2039 | */ | |
2040 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2041 | ||
2042 | changed_p = compare_notif_nhlfes(ctx_list, &lsp->nhlfe_list, | |
2043 | &start_count, &end_count); | |
2044 | ||
2045 | if (is_debug) | |
2046 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2047 | start_count, end_count, | |
2048 | changed_p ? ", changed" : ""); | |
2049 | ||
2050 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2051 | ||
2052 | if (compare_notif_nhlfes(ctx_list, &lsp->backup_nhlfe_list, | |
2053 | &start_count, &end_count)) | |
2054 | /* Avoid accidentally setting back to 'false' */ | |
2055 | changed_p = true; | |
2056 | ||
2057 | if (is_debug) | |
2058 | zlog_debug("LSP dplane notif: lfib backups, start_count %d, end_count %d%s", | |
2059 | start_count, end_count, | |
2060 | changed_p ? ", changed" : ""); | |
2061 | ||
2062 | /* | |
2063 | * Has the LSP become uninstalled? We need the existing state of the | |
2064 | * nexthops/nhlfes at this point so we know what to delete. | |
2065 | */ | |
2066 | if (start_count > 0 && end_count == 0) { | |
2067 | /* Inform other lfibs */ | |
2068 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2069 | } | |
2070 | ||
2071 | /* | |
2072 | * Now we take a second pass and bring the zebra | |
2073 | * nexthop state into sync with the forwarding-plane state. | |
2074 | */ | |
2075 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2076 | update_nhlfes_from_ctx(&lsp->nhlfe_list, ctx_list); | |
2077 | ||
2078 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2079 | update_nhlfes_from_ctx(&lsp->backup_nhlfe_list, ctx_list); | |
2080 | ||
188a00e0 | 2081 | if (end_count > 0) { |
104e3ad9 | 2082 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2083 | |
2084 | if (changed_p) | |
2085 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2086 | ||
2087 | } else { | |
104e3ad9 MS |
2088 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2089 | clear_nhlfe_installed(lsp); | |
2090 | } | |
2091 | ||
2092 | done: | |
2093 | dplane_ctx_fini(&ctx); | |
2094 | } | |
2095 | ||
a64448ba DS |
2096 | /* |
2097 | * Install dynamic LSP entry. | |
2098 | */ | |
d62a17ae | 2099 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2100 | struct route_entry *re) | |
a64448ba | 2101 | { |
d62a17ae | 2102 | struct route_table *table; |
2103 | zebra_fec_t *fec; | |
a64448ba | 2104 | |
d62a17ae | 2105 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2106 | if (!table) | |
2107 | return -1; | |
a64448ba | 2108 | |
d62a17ae | 2109 | /* See if there is a configured label binding for this FEC. */ |
2110 | fec = fec_find(table, &rn->p); | |
2111 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2112 | return 0; | |
a64448ba | 2113 | |
d62a17ae | 2114 | /* We cannot install a label forwarding entry if local label is the |
2115 | * implicit-null label. | |
2116 | */ | |
70e98a7f | 2117 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2118 | return 0; |
a64448ba | 2119 | |
d62a17ae | 2120 | if (lsp_install(zvrf, fec->label, rn, re)) |
2121 | return -1; | |
a64448ba | 2122 | |
d62a17ae | 2123 | return 0; |
a64448ba DS |
2124 | } |
2125 | ||
2126 | /* | |
2127 | * Uninstall dynamic LSP entry, if any. | |
2128 | */ | |
d62a17ae | 2129 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2130 | struct route_entry *re) | |
a64448ba | 2131 | { |
d62a17ae | 2132 | struct route_table *table; |
2133 | zebra_fec_t *fec; | |
a64448ba | 2134 | |
d62a17ae | 2135 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2136 | if (!table) | |
2137 | return -1; | |
a64448ba | 2138 | |
d62a17ae | 2139 | /* See if there is a configured label binding for this FEC. */ |
2140 | fec = fec_find(table, &rn->p); | |
2141 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2142 | return 0; | |
a64448ba | 2143 | |
d62a17ae | 2144 | /* Uninstall always removes all dynamic NHLFEs. */ |
2145 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2146 | } |
2147 | ||
d4cb23d7 | 2148 | /* |
cd4bb96f MS |
2149 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2150 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 MS |
2151 | */ |
2152 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2153 | enum lsp_types_t lsp_type, | |
2154 | enum nexthop_types_t gtype, | |
963a9803 | 2155 | const union g_addr *gate, |
d4cb23d7 | 2156 | ifindex_t ifindex, |
5065db0a | 2157 | uint8_t num_labels, |
cd4bb96f | 2158 | const mpls_label_t *out_labels) |
d4cb23d7 MS |
2159 | { |
2160 | /* Just a public pass-through to the internal implementation */ | |
5065db0a | 2161 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
cc1b9746 | 2162 | out_labels, false /*backup*/); |
d4cb23d7 MS |
2163 | } |
2164 | ||
cd4bb96f MS |
2165 | /* |
2166 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2167 | * This path only changes the LSP object - nothing is scheduled for | |
2168 | * processing, for example. | |
2169 | */ | |
2170 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nhlfe(zebra_lsp_t *lsp, | |
2171 | enum lsp_types_t lsp_type, | |
2172 | enum nexthop_types_t gtype, | |
963a9803 | 2173 | const union g_addr *gate, |
cd4bb96f MS |
2174 | ifindex_t ifindex, |
2175 | uint8_t num_labels, | |
2176 | const mpls_label_t *out_labels) | |
2177 | { | |
2178 | /* Just a public pass-through to the internal implementation */ | |
cc1b9746 MS |
2179 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2180 | out_labels, true); | |
cd4bb96f MS |
2181 | } |
2182 | ||
2183 | /* | |
2184 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2185 | */ | |
2186 | zebra_nhlfe_t *zebra_mpls_lsp_add_nh(zebra_lsp_t *lsp, | |
2187 | enum lsp_types_t lsp_type, | |
2188 | const struct nexthop *nh) | |
2189 | { | |
2190 | zebra_nhlfe_t *nhlfe; | |
2191 | ||
2192 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2193 | return NULL; | |
2194 | ||
2195 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
cc1b9746 MS |
2196 | nh->nh_label->num_labels, nh->nh_label->label, |
2197 | false /*backup*/); | |
cd4bb96f MS |
2198 | |
2199 | return nhlfe; | |
2200 | } | |
2201 | ||
2202 | /* | |
2203 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2204 | * return the newly-added object. | |
2205 | */ | |
2206 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nh(zebra_lsp_t *lsp, | |
2207 | enum lsp_types_t lsp_type, | |
2208 | const struct nexthop *nh) | |
2209 | { | |
2210 | zebra_nhlfe_t *nhlfe; | |
2211 | ||
2212 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2213 | return NULL; | |
2214 | ||
cc1b9746 | 2215 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, |
cd4bb96f | 2216 | nh->ifindex, nh->nh_label->num_labels, |
cc1b9746 | 2217 | nh->nh_label->label, true); |
cd4bb96f MS |
2218 | |
2219 | return nhlfe; | |
2220 | } | |
2221 | ||
d4cb23d7 MS |
2222 | /* |
2223 | * Free an allocated NHLFE | |
2224 | */ | |
cd4bb96f | 2225 | void zebra_mpls_nhlfe_free(zebra_nhlfe_t *nhlfe) |
d4cb23d7 MS |
2226 | { |
2227 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2228 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2229 | } |
2230 | ||
5aba114a DS |
2231 | /* |
2232 | * Registration from a client for the label binding for a FEC. If a binding | |
2233 | * already exists, it is informed to the client. | |
28d58fd7 | 2234 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2235 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2236 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2237 | * is acceptable. If no label index then just register the specified label. |
2238 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2239 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2240 | */ |
d62a17ae | 2241 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2242 | uint32_t label, uint32_t label_index, |
2243 | struct zserv *client) | |
d62a17ae | 2244 | { |
2245 | struct route_table *table; | |
2246 | zebra_fec_t *fec; | |
2247 | char buf[BUFSIZ]; | |
57592a53 AD |
2248 | bool new_client; |
2249 | bool label_change = false; | |
d7c0a89a | 2250 | uint32_t old_label; |
57592a53 AD |
2251 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2252 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2253 | |
2254 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2255 | if (!table) | |
2256 | return -1; | |
2257 | ||
2258 | if (IS_ZEBRA_DEBUG_MPLS) | |
2259 | prefix2str(p, buf, BUFSIZ); | |
2260 | ||
57592a53 AD |
2261 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2262 | flog_err( | |
2263 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2264 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2265 | buf, label, label_index, | |
2266 | zebra_route_string(client->proto)); | |
2267 | return -1; | |
2268 | } | |
2269 | ||
d62a17ae | 2270 | /* Locate FEC */ |
2271 | fec = fec_find(table, p); | |
2272 | if (!fec) { | |
57592a53 | 2273 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2274 | if (!fec) { |
af4c2728 | 2275 | flog_err( |
e914ccbe | 2276 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2277 | "Failed to add FEC %s upon register, client %s", |
2278 | buf, zebra_route_string(client->proto)); | |
2279 | return -1; | |
2280 | } | |
2281 | ||
2282 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2283 | new_client = true; |
d62a17ae | 2284 | } else { |
57592a53 AD |
2285 | /* Check if the FEC has been statically defined in the config */ |
2286 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2287 | /* Client may register same FEC with different label index. */ |
2288 | new_client = | |
2289 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2290 | if (!new_client && fec->label_index == label_index |
2291 | && fec->label == label) | |
d62a17ae | 2292 | /* Duplicate register */ |
2293 | return 0; | |
2294 | ||
57592a53 | 2295 | /* Save current label, update the FEC */ |
d62a17ae | 2296 | old_label = fec->label; |
2297 | fec->label_index = label_index; | |
2298 | } | |
2299 | ||
2300 | if (new_client) | |
2301 | listnode_add(fec->client_list, client); | |
2302 | ||
2303 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2304 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2305 | have_label_index ? " index" : "", | |
2306 | have_label_index ? label_index : label, | |
2307 | new_client ? "registered" : "updated", | |
2308 | zebra_route_string(client->proto), | |
2309 | is_configured_fec | |
2310 | ? ", but using statically configured label" | |
2311 | : ""); | |
2312 | ||
2313 | /* If not a statically configured FEC, derive the local label | |
2314 | * from label index or use the provided label | |
d62a17ae | 2315 | */ |
57592a53 AD |
2316 | if (!is_configured_fec) { |
2317 | if (have_label_index) | |
2318 | fec_derive_label_from_index(zvrf, fec); | |
2319 | else | |
2320 | fec->label = label; | |
d62a17ae | 2321 | |
2322 | /* If no label change, exit. */ | |
2323 | if (fec->label == old_label) | |
2324 | return 0; | |
2325 | ||
57592a53 | 2326 | label_change = true; |
d62a17ae | 2327 | } |
2328 | ||
2329 | /* If new client or label change, update client and install or uninstall | |
2330 | * label forwarding entry as needed. | |
2331 | */ | |
2332 | /* Inform client of label, if needed. */ | |
2333 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2334 | if (IS_ZEBRA_DEBUG_MPLS) | |
2335 | zlog_debug("Update client label %u", fec->label); | |
2336 | fec_send(fec, client); | |
2337 | } | |
2338 | ||
2339 | if (new_client || label_change) | |
2340 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2341 | ||
2342 | return 0; | |
5aba114a DS |
2343 | } |
2344 | ||
2345 | /* | |
2346 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2347 | * itself is deleted if no other registered clients exist and there is no | |
2348 | * label bound to the FEC. | |
2349 | */ | |
d62a17ae | 2350 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2351 | struct zserv *client) | |
5aba114a | 2352 | { |
d62a17ae | 2353 | struct route_table *table; |
2354 | zebra_fec_t *fec; | |
2355 | char buf[BUFSIZ]; | |
5aba114a | 2356 | |
d62a17ae | 2357 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2358 | if (!table) | |
2359 | return -1; | |
5aba114a | 2360 | |
d62a17ae | 2361 | if (IS_ZEBRA_DEBUG_MPLS) |
2362 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2363 | |
d62a17ae | 2364 | fec = fec_find(table, p); |
2365 | if (!fec) { | |
e914ccbe | 2366 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
2dbe669b DA |
2367 | "Failed to find FEC %pFX upon unregister, client %s", |
2368 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2369 | return -1; |
2370 | } | |
5aba114a | 2371 | |
d62a17ae | 2372 | listnode_delete(fec->client_list, client); |
2373 | ||
2374 | if (IS_ZEBRA_DEBUG_MPLS) | |
2375 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2376 | zebra_route_string(client->proto)); | |
2377 | ||
2378 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2379 | * deleting, see if any LSP needs to be uninstalled. | |
2380 | */ | |
2381 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2382 | && list_isempty(fec->client_list)) { | |
2383 | mpls_label_t old_label = fec->label; | |
2384 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2385 | fec_change_update_lsp(zvrf, fec, old_label); | |
2386 | fec_del(fec); | |
2387 | } | |
5aba114a | 2388 | |
d62a17ae | 2389 | return 0; |
5aba114a DS |
2390 | } |
2391 | ||
2392 | /* | |
2393 | * Cleanup any FECs registered by this client. | |
2394 | */ | |
453844ab | 2395 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2396 | { |
453844ab | 2397 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2398 | struct route_node *rn; |
2399 | zebra_fec_t *fec; | |
2400 | struct listnode *node; | |
2401 | struct zserv *fec_client; | |
2402 | int af; | |
2403 | ||
2404 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2405 | if (zvrf->fec_table[af] == NULL) | |
2406 | continue; | |
2407 | ||
2408 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2409 | rn = route_next(rn)) { | |
2410 | fec = rn->info; | |
2411 | if (!fec || list_isempty(fec->client_list)) | |
2412 | continue; | |
2413 | ||
2414 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2415 | fec_client)) { | |
2416 | if (fec_client == client) { | |
2417 | listnode_delete(fec->client_list, | |
2418 | fec_client); | |
2419 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2420 | && list_isempty(fec->client_list)) | |
2421 | fec_del(fec); | |
2422 | break; | |
2423 | } | |
2424 | } | |
2425 | } | |
2426 | } | |
5aba114a | 2427 | |
d62a17ae | 2428 | return 0; |
5aba114a DS |
2429 | } |
2430 | ||
651105b5 RW |
2431 | struct lsp_uninstall_args { |
2432 | struct hash *lsp_table; | |
2433 | enum lsp_types_t type; | |
2434 | }; | |
2435 | ||
2436 | /* | |
2437 | * Cleanup MPLS labels registered by this client. | |
2438 | */ | |
2439 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2440 | { | |
2441 | struct vrf *vrf; | |
2442 | struct zebra_vrf *zvrf; | |
2443 | ||
2444 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2445 | struct lsp_uninstall_args args; | |
2446 | ||
2447 | zvrf = vrf->info; | |
2448 | if (!zvrf) | |
2449 | continue; | |
2450 | ||
2451 | /* Cleanup LSPs. */ | |
2452 | args.lsp_table = zvrf->lsp_table; | |
2453 | args.type = lsp_type_from_re_type(client->proto); | |
2454 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2455 | &args); | |
2456 | ||
2457 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2458 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2459 | lsp_type_from_re_type(client->proto)); | |
2460 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2461 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2462 | } |
2463 | ||
2464 | return 0; | |
2465 | } | |
2466 | ||
f31e084c DS |
2467 | /* |
2468 | * Return FEC (if any) to which this label is bound. | |
2469 | * Note: Only works for per-prefix binding and when the label is not | |
2470 | * implicit-null. | |
2471 | * TODO: Currently walks entire table, can optimize later with another | |
2472 | * hash.. | |
2473 | */ | |
d62a17ae | 2474 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2475 | mpls_label_t label) | |
2476 | { | |
2477 | struct route_node *rn; | |
2478 | zebra_fec_t *fec; | |
2479 | int af; | |
2480 | ||
2481 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2482 | if (zvrf->fec_table[af] == NULL) | |
2483 | continue; | |
2484 | ||
2485 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2486 | rn = route_next(rn)) { | |
2487 | if (!rn->info) | |
2488 | continue; | |
2489 | fec = rn->info; | |
2490 | if (fec->label == label) | |
2491 | return fec; | |
2492 | } | |
2493 | } | |
f31e084c | 2494 | |
d62a17ae | 2495 | return NULL; |
f31e084c DS |
2496 | } |
2497 | ||
2498 | /* | |
2499 | * Inform if specified label is currently bound to a FEC or not. | |
2500 | */ | |
d62a17ae | 2501 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2502 | { |
d62a17ae | 2503 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2504 | } |
2505 | ||
2506 | /* | |
5aba114a | 2507 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2508 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2509 | * label forwarding entry. | |
9d303b37 | 2510 | */ |
d62a17ae | 2511 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2512 | mpls_label_t in_label) | |
2513 | { | |
2514 | struct route_table *table; | |
2515 | zebra_fec_t *fec; | |
2516 | char buf[BUFSIZ]; | |
2517 | mpls_label_t old_label; | |
2518 | int ret = 0; | |
2519 | ||
2520 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2521 | if (!table) | |
2522 | return -1; | |
2523 | ||
2524 | if (IS_ZEBRA_DEBUG_MPLS) | |
2525 | prefix2str(p, buf, BUFSIZ); | |
2526 | ||
2527 | /* Update existing FEC or create a new one. */ | |
2528 | fec = fec_find(table, p); | |
2529 | if (!fec) { | |
2530 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2531 | MPLS_INVALID_LABEL_INDEX); | |
2532 | if (!fec) { | |
e914ccbe | 2533 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
2dbe669b | 2534 | "Failed to add FEC %pFX upon config", p); |
d62a17ae | 2535 | return -1; |
2536 | } | |
2537 | ||
2538 | if (IS_ZEBRA_DEBUG_MPLS) | |
2539 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2540 | } else { | |
2541 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2542 | if (fec->label == in_label) | |
2543 | /* Duplicate config */ | |
2544 | return 0; | |
2545 | ||
2546 | /* Label change, update clients. */ | |
2547 | old_label = fec->label; | |
2548 | if (IS_ZEBRA_DEBUG_MPLS) | |
2549 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2550 | ||
2551 | fec->label = in_label; | |
2552 | fec_update_clients(fec); | |
2553 | ||
2554 | /* Update label forwarding entries appropriately */ | |
2555 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2556 | } | |
2557 | ||
2558 | return ret; | |
f31e084c DS |
2559 | } |
2560 | ||
2561 | /* | |
5aba114a DS |
2562 | * Remove static FEC to label binding. If there are no clients registered |
2563 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2564 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2565 | * client may need to be updated with derived label. | |
f31e084c | 2566 | */ |
d62a17ae | 2567 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2568 | { | |
2569 | struct route_table *table; | |
2570 | zebra_fec_t *fec; | |
2571 | mpls_label_t old_label; | |
2572 | char buf[BUFSIZ]; | |
2573 | ||
2574 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2575 | if (!table) | |
2576 | return -1; | |
2577 | ||
2578 | fec = fec_find(table, p); | |
2579 | if (!fec) { | |
2580 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2581 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2582 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2583 | return -1; |
2584 | } | |
2585 | ||
2586 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2dbe669b | 2587 | zlog_debug("Delete fec %pFX label %u label index %u", p, |
57592a53 | 2588 | fec->label, fec->label_index); |
d62a17ae | 2589 | } |
2590 | ||
2591 | old_label = fec->label; | |
2592 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2593 | fec->label = MPLS_INVALID_LABEL; | |
2594 | ||
2595 | /* If no client exists, just delete the FEC. */ | |
2596 | if (list_isempty(fec->client_list)) { | |
2597 | fec_del(fec); | |
2598 | return 0; | |
2599 | } | |
2600 | ||
2601 | /* Derive the local label (from label index) or reset it. */ | |
2602 | fec_derive_label_from_index(zvrf, fec); | |
2603 | ||
2604 | /* If there is a label change, update clients. */ | |
2605 | if (fec->label == old_label) | |
2606 | return 0; | |
2607 | fec_update_clients(fec); | |
2608 | ||
2609 | /* Update label forwarding entries appropriately */ | |
2610 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2611 | } |
2612 | ||
2613 | /* | |
2614 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2615 | */ | |
d62a17ae | 2616 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2617 | { |
d62a17ae | 2618 | struct route_node *rn; |
2619 | int af; | |
2620 | zebra_fec_t *fec; | |
d62a17ae | 2621 | int write = 0; |
f31e084c | 2622 | |
d62a17ae | 2623 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2624 | if (zvrf->fec_table[af] == NULL) | |
2625 | continue; | |
f31e084c | 2626 | |
d62a17ae | 2627 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2628 | rn = route_next(rn)) { | |
2629 | if (!rn->info) | |
2630 | continue; | |
f31e084c | 2631 | |
d62a17ae | 2632 | char lstr[BUFSIZ]; |
2633 | fec = rn->info; | |
f31e084c | 2634 | |
d62a17ae | 2635 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2636 | continue; | |
f31e084c | 2637 | |
d62a17ae | 2638 | write = 1; |
2dbe669b | 2639 | vty_out(vty, "mpls label bind %pFX %s\n", &rn->p, |
d62a17ae | 2640 | label2str(fec->label, lstr, BUFSIZ)); |
2641 | } | |
2642 | } | |
f31e084c | 2643 | |
d62a17ae | 2644 | return write; |
f31e084c DS |
2645 | } |
2646 | ||
2647 | /* | |
2648 | * Display MPLS FEC to label binding (VTY command handler). | |
2649 | */ | |
d62a17ae | 2650 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2651 | { |
d62a17ae | 2652 | struct route_node *rn; |
2653 | int af; | |
f31e084c | 2654 | |
d62a17ae | 2655 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2656 | if (zvrf->fec_table[af] == NULL) | |
2657 | continue; | |
f31e084c | 2658 | |
d62a17ae | 2659 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2660 | rn = route_next(rn)) { | |
2661 | if (!rn->info) | |
2662 | continue; | |
2663 | fec_print(rn->info, vty); | |
2664 | } | |
2665 | } | |
f31e084c DS |
2666 | } |
2667 | ||
2668 | /* | |
2669 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2670 | */ | |
d62a17ae | 2671 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2672 | struct prefix *p) | |
f31e084c | 2673 | { |
d62a17ae | 2674 | struct route_table *table; |
2675 | struct route_node *rn; | |
f31e084c | 2676 | |
d62a17ae | 2677 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2678 | if (!table) | |
2679 | return; | |
f31e084c | 2680 | |
d62a17ae | 2681 | apply_mask(p); |
2682 | rn = route_node_lookup(table, p); | |
2683 | if (!rn) | |
2684 | return; | |
f31e084c | 2685 | |
d62a17ae | 2686 | route_unlock_node(rn); |
2687 | if (!rn->info) | |
2688 | return; | |
f31e084c | 2689 | |
d62a17ae | 2690 | fec_print(rn->info, vty); |
f31e084c DS |
2691 | } |
2692 | ||
f2e7f4eb MS |
2693 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2694 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2695 | { |
2696 | struct nhg_hash_entry *nhe; | |
2697 | ||
f2e7f4eb | 2698 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2699 | |
5463ce26 | 2700 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2701 | } |
2702 | ||
f2e7f4eb MS |
2703 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2704 | enum lsp_types_t type, | |
2705 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2706 | { |
f2e7f4eb MS |
2707 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2708 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2709 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2710 | nexthop_del_labels(nexthop); |
2711 | else | |
2712 | return false; | |
2713 | ||
2714 | return true; | |
2715 | } | |
2716 | ||
f2e7f4eb MS |
2717 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2718 | struct prefix *prefix, uint8_t route_type, | |
2719 | unsigned short route_instance) | |
d62a17ae | 2720 | { |
2721 | struct route_table *table; | |
2722 | struct route_node *rn; | |
2723 | struct route_entry *re; | |
2724 | struct nexthop *nexthop; | |
f2e7f4eb | 2725 | struct nhg_hash_entry *new_nhe; |
da137142 | 2726 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2727 | |
2728 | /* Lookup table. */ | |
da137142 | 2729 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2730 | if (!table) |
2731 | return -1; | |
2732 | ||
2733 | /* Lookup existing route */ | |
2734 | rn = route_node_get(table, prefix); | |
a2addae8 | 2735 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2736 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2737 | continue; | |
e132dea0 | 2738 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2739 | break; |
88d88a9c | 2740 | } |
d62a17ae | 2741 | if (re == NULL) |
2742 | return -1; | |
2743 | ||
da137142 | 2744 | /* |
f2e7f4eb MS |
2745 | * Nexthops are now shared by multiple routes, so we have to make |
2746 | * a local copy, modify the copy, then update the route. | |
da137142 | 2747 | */ |
f2e7f4eb | 2748 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2749 | |
f2e7f4eb MS |
2750 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2751 | nexthop_del_labels(nexthop); | |
2752 | ||
2753 | /* Update backup routes/nexthops also, if present. */ | |
2754 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2755 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2756 | nexthop = nexthop->next) | |
2757 | nexthop_del_labels(nexthop); | |
2758 | } | |
2759 | ||
2760 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2761 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2762 | ||
68110c42 MS |
2763 | /* This will create (or ref) a new nhe, so we will discard the local |
2764 | * temporary nhe | |
2765 | */ | |
f2e7f4eb MS |
2766 | mpls_zebra_nhe_update(re, afi, new_nhe); |
2767 | ||
2768 | zebra_nhg_free(new_nhe); | |
2769 | ||
2770 | rib_queue_add(rn); | |
2771 | ||
2772 | return 0; | |
2773 | } | |
2774 | ||
2775 | /* | |
2776 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2777 | * update its labels according to 'add_p', and return 'true' if successful. | |
2778 | */ | |
2779 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2780 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2781 | { | |
2782 | bool found = false, success = false; | |
2783 | struct nexthop *nexthop; | |
2784 | ||
2785 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2786 | switch (nexthop->type) { |
2787 | case NEXTHOP_TYPE_IPV4: | |
2788 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2789 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2790 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2791 | continue; |
f2e7f4eb MS |
2792 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2793 | &znh->gate.ipv4)) | |
d62a17ae | 2794 | continue; |
2795 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2796 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2797 | continue; |
f2e7f4eb | 2798 | |
8f77d0ee | 2799 | found = true; |
f2e7f4eb MS |
2800 | |
2801 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2802 | break; | |
2803 | ||
2804 | success = true; | |
8f77d0ee | 2805 | break; |
d62a17ae | 2806 | case NEXTHOP_TYPE_IPV6: |
2807 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2808 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2809 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2810 | continue; |
f2e7f4eb MS |
2811 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2812 | &znh->gate.ipv6)) | |
d62a17ae | 2813 | continue; |
2814 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2815 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2816 | continue; |
f2e7f4eb | 2817 | |
8f77d0ee | 2818 | found = true; |
f2e7f4eb MS |
2819 | |
2820 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2821 | break; | |
2822 | success = true; | |
8f77d0ee | 2823 | break; |
d62a17ae | 2824 | default: |
2825 | break; | |
2826 | } | |
f2e7f4eb MS |
2827 | |
2828 | if (found) | |
2829 | break; | |
d62a17ae | 2830 | } |
d62a17ae | 2831 | |
f2e7f4eb MS |
2832 | return success; |
2833 | } | |
19474c9c | 2834 | |
f2e7f4eb MS |
2835 | /* |
2836 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2837 | * using zapi message info. | |
2838 | * There are several changes that need to be made, in several zebra | |
2839 | * data structures, so we want to do all the work required at once. | |
2840 | */ | |
2841 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2842 | const struct zapi_labels *zl) | |
2843 | { | |
2844 | int i, counter, ret = 0; | |
2dbe669b | 2845 | char buf[NEXTHOP_STRLEN]; |
f2e7f4eb MS |
2846 | const struct zapi_nexthop *znh; |
2847 | struct route_table *table; | |
2848 | struct route_node *rn = NULL; | |
2849 | struct route_entry *re = NULL; | |
2850 | struct nhg_hash_entry *new_nhe = NULL; | |
2851 | bool found; | |
2852 | afi_t afi = AFI_IP; | |
2853 | const struct prefix *prefix = NULL; | |
2854 | struct hash *lsp_table; | |
2855 | zebra_ile_t tmp_ile; | |
2856 | zebra_lsp_t *lsp = NULL; | |
19474c9c | 2857 | |
f2e7f4eb MS |
2858 | /* Prep LSP for add case */ |
2859 | if (add_p) { | |
2860 | /* Lookup table. */ | |
2861 | lsp_table = zvrf->lsp_table; | |
2862 | if (!lsp_table) | |
2863 | return -1; | |
2864 | ||
2865 | /* Find or create LSP object */ | |
2866 | tmp_ile.in_label = zl->local_label; | |
2867 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2868 | if (!lsp) | |
2869 | return -1; | |
da137142 SW |
2870 | } |
2871 | ||
f2e7f4eb MS |
2872 | /* Prep for route/FEC update if requested */ |
2873 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2874 | prefix = &zl->route.prefix; | |
da137142 | 2875 | |
f2e7f4eb | 2876 | afi = family2afi(prefix->family); |
ce549947 | 2877 | |
f2e7f4eb MS |
2878 | /* Lookup table. */ |
2879 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2880 | if (table) { | |
2881 | /* Lookup existing route */ | |
2882 | rn = route_node_get(table, prefix); | |
2883 | RNODE_FOREACH_RE(rn, re) { | |
2884 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2885 | continue; | |
2886 | if (re->type == zl->route.type && | |
2887 | re->instance == zl->route.instance) | |
2888 | break; | |
2889 | } | |
2890 | } | |
ea6b290b | 2891 | |
f2e7f4eb MS |
2892 | if (re) { |
2893 | /* | |
2894 | * Copy over current nexthops into a temporary group. | |
2895 | * We can't just change the values here since the nhgs | |
2896 | * are shared and if the labels change, we'll need | |
2897 | * to find or create a new nhg. We need to create | |
2898 | * a whole temporary group, make changes to it, | |
2899 | * then attach that to the route. | |
2900 | */ | |
2901 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2902 | |
f2e7f4eb MS |
2903 | } else { |
2904 | /* | |
2905 | * The old version of the zapi code | |
2906 | * attempted to manage LSPs before trying to | |
2907 | * find a route/FEC, so we'll continue that way. | |
2908 | */ | |
2dbe669b DA |
2909 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) |
2910 | zlog_debug( | |
2911 | "%s: FTN update requested: no route for prefix %pFX", | |
2912 | __func__, prefix); | |
f2e7f4eb MS |
2913 | } |
2914 | } | |
2915 | ||
2916 | /* | |
2917 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2918 | */ | |
2919 | ||
2920 | counter = 0; | |
2921 | for (i = 0; i < zl->nexthop_num; i++) { | |
2922 | ||
2923 | znh = &zl->nexthops[i]; | |
2924 | ||
2925 | /* Attempt LSP update */ | |
2926 | if (add_p) | |
2927 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2928 | else | |
2929 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2930 | zl->local_label, znh->type, | |
cc1b9746 MS |
2931 | &znh->gate, znh->ifindex, |
2932 | false); | |
f2e7f4eb MS |
2933 | if (ret < 0) { |
2934 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2935 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2936 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
2937 | __func__, (add_p ? "" : "un"), | |
2938 | zl->local_label, buf); | |
2939 | } | |
ea6b290b | 2940 | continue; |
f2e7f4eb MS |
2941 | } |
2942 | ||
2943 | /* Attempt route/FEC update if requested */ | |
2944 | if (re == NULL) | |
2945 | continue; | |
2946 | ||
2947 | /* Search the route's nexthops for a match, and update it. */ | |
2948 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
2949 | znh); | |
2950 | if (found) { | |
2951 | counter++; | |
2952 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
2953 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
2954 | zlog_debug( |
2955 | "%s: Unable to update FEC: prefix %pFX, label %u, znh %s", | |
2956 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb | 2957 | } |
ea6b290b | 2958 | } |
ea6b290b | 2959 | |
f2e7f4eb MS |
2960 | /* |
2961 | * Process backup LSPs/nexthop entries also. We associate backup | |
2962 | * LSP info with backup nexthops. | |
2963 | */ | |
2964 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
2965 | goto znh_done; | |
19474c9c | 2966 | |
f2e7f4eb | 2967 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 2968 | |
f2e7f4eb | 2969 | znh = &zl->backup_nexthops[i]; |
19474c9c | 2970 | |
f2e7f4eb MS |
2971 | if (add_p) |
2972 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
2973 | else | |
cc1b9746 MS |
2974 | ret = mpls_lsp_uninstall(zvrf, zl->type, |
2975 | zl->local_label, | |
2976 | znh->type, &znh->gate, | |
2977 | znh->ifindex, true); | |
f2e7f4eb MS |
2978 | |
2979 | if (ret < 0) { | |
2980 | if (IS_ZEBRA_DEBUG_RECV || | |
2981 | IS_ZEBRA_DEBUG_MPLS) { | |
2982 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2983 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
2984 | __func__, (add_p ? "" : "un"), | |
2985 | zl->local_label, buf); | |
2986 | } | |
2987 | continue; | |
2988 | } | |
19474c9c | 2989 | |
f2e7f4eb MS |
2990 | /* Attempt backup nexthop/FEC update if requested */ |
2991 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
2992 | continue; | |
19474c9c | 2993 | |
f2e7f4eb MS |
2994 | /* Search the route's backup nexthops for a match |
2995 | * and update it. | |
2996 | */ | |
2997 | found = ftn_update_znh(add_p, zl->type, | |
2998 | new_nhe->backup_info->nhe->nhg.nexthop, | |
2999 | znh); | |
3000 | if (found) { | |
3001 | counter++; | |
3002 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3003 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3004 | zlog_debug( |
3005 | "%s: Unable to update backup FEC: prefix %pFX, label %u, znh %s", | |
3006 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb MS |
3007 | } |
3008 | } | |
ea6b290b | 3009 | |
f2e7f4eb MS |
3010 | znh_done: |
3011 | ||
3012 | /* | |
3013 | * If we made changes, update the route, and schedule it | |
3014 | * for rib processing | |
3015 | */ | |
3016 | if (re != NULL && counter > 0) { | |
3017 | assert(rn != NULL); | |
3018 | ||
3019 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3020 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3021 | ||
3022 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3023 | ||
3024 | rib_queue_add(rn); | |
3025 | } | |
3026 | ||
3027 | if (new_nhe) | |
3028 | zebra_nhg_free(new_nhe); | |
3029 | ||
3030 | return ret; | |
ea6b290b RW |
3031 | } |
3032 | ||
ce549947 RW |
3033 | /* |
3034 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3035 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3036 | * the out-label for an existing NHLFE (update case). | |
3037 | */ | |
cd4bb96f MS |
3038 | static zebra_nhlfe_t * |
3039 | lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3040 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3041 | enum nexthop_types_t gtype, const union g_addr *gate, | |
cc1b9746 | 3042 | ifindex_t ifindex, bool is_backup) |
d62a17ae | 3043 | { |
d62a17ae | 3044 | zebra_nhlfe_t *nhlfe; |
cd4bb96f | 3045 | char buf[MPLS_LABEL_STRLEN]; |
cc1b9746 | 3046 | const char *backup_str; |
e4a1ec74 | 3047 | |
cc1b9746 MS |
3048 | if (is_backup) { |
3049 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3050 | gate, ifindex); | |
3051 | backup_str = "backup "; | |
d62a17ae | 3052 | } else { |
cc1b9746 MS |
3053 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, |
3054 | ifindex); | |
3055 | backup_str = ""; | |
d62a17ae | 3056 | } |
3057 | ||
cd4bb96f MS |
3058 | if (nhlfe) { |
3059 | struct nexthop *nh = nhlfe->nexthop; | |
3060 | ||
3061 | assert(nh); | |
3062 | assert(nh->nh_label); | |
3063 | ||
3064 | /* Clear deleted flag (in case it was set) */ | |
3065 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3066 | if (nh->nh_label->num_labels == num_out_labels | |
3067 | && !memcmp(nh->nh_label->label, out_labels, | |
3068 | sizeof(mpls_label_t) * num_out_labels)) | |
3069 | /* No change */ | |
3070 | return nhlfe; | |
3071 | ||
3072 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3073 | char buf2[MPLS_LABEL_STRLEN]; | |
3074 | char buf3[MPLS_LABEL_STRLEN]; | |
3075 | ||
3076 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3077 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3078 | sizeof(buf2), 0); | |
3079 | mpls_label2str(nh->nh_label->num_labels, | |
3080 | nh->nh_label->label, buf3, sizeof(buf3), | |
3081 | 0); | |
3082 | ||
cc1b9746 MS |
3083 | zlog_debug("LSP in-label %u type %d %snexthop %s out-label(s) changed to %s (old %s)", |
3084 | lsp->ile.in_label, type, backup_str, buf, | |
3085 | buf2, buf3); | |
cd4bb96f MS |
3086 | } |
3087 | ||
3088 | /* Update out label(s), trigger processing. */ | |
3089 | if (nh->nh_label->num_labels == num_out_labels) | |
3090 | memcpy(nh->nh_label->label, out_labels, | |
3091 | sizeof(mpls_label_t) * num_out_labels); | |
3092 | else { | |
3093 | nexthop_del_labels(nh); | |
3094 | nexthop_add_labels(nh, type, num_out_labels, | |
3095 | out_labels); | |
3096 | } | |
3097 | } else { | |
3098 | /* Add LSP entry to this nexthop */ | |
cc1b9746 MS |
3099 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3100 | num_out_labels, out_labels, is_backup); | |
cd4bb96f MS |
3101 | if (!nhlfe) |
3102 | return NULL; | |
3103 | ||
3104 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3105 | char buf2[MPLS_LABEL_STRLEN]; | |
3106 | ||
3107 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3108 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3109 | sizeof(buf2), 0); | |
3110 | ||
cc1b9746 MS |
3111 | zlog_debug("Add LSP in-label %u type %d %snexthop %s out-label(s) %s", |
3112 | lsp->ile.in_label, type, backup_str, buf, | |
3113 | buf2); | |
cd4bb96f MS |
3114 | } |
3115 | ||
3116 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3117 | } | |
3118 | ||
3119 | /* Mark NHLFE, queue LSP for processing. */ | |
3120 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3121 | ||
3122 | return nhlfe; | |
3123 | } | |
3124 | ||
3125 | /* | |
3126 | * Install an LSP and forwarding entry; used primarily | |
301a687a | 3127 | * from vrf zapi message processing. |
cd4bb96f MS |
3128 | */ |
3129 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3130 | mpls_label_t in_label, uint8_t num_out_labels, | |
3131 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3132 | const union g_addr *gate, ifindex_t ifindex) | |
3133 | { | |
3134 | struct hash *lsp_table; | |
3135 | zebra_ile_t tmp_ile; | |
3136 | zebra_lsp_t *lsp; | |
3137 | zebra_nhlfe_t *nhlfe; | |
3138 | ||
3139 | /* Lookup table. */ | |
3140 | lsp_table = zvrf->lsp_table; | |
3141 | if (!lsp_table) | |
3142 | return -1; | |
3143 | ||
3144 | /* Find or create LSP object */ | |
3145 | tmp_ile.in_label = in_label; | |
3146 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3147 | if (!lsp) | |
3148 | return -1; | |
3149 | ||
3150 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
cc1b9746 | 3151 | gate, ifindex, false /*backup*/); |
cd4bb96f MS |
3152 | if (nhlfe == NULL) |
3153 | return -1; | |
3154 | ||
3155 | /* Queue LSP for processing. */ | |
3156 | if (lsp_processq_add(lsp)) | |
3157 | return -1; | |
3158 | ||
3159 | return 0; | |
3160 | } | |
3161 | ||
3162 | /* | |
3163 | * Install or replace NHLFE, using info from zapi nexthop | |
3164 | */ | |
f2e7f4eb MS |
3165 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3166 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3167 | { |
cd4bb96f MS |
3168 | zebra_nhlfe_t *nhlfe; |
3169 | ||
cd4bb96f | 3170 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
cc1b9746 MS |
3171 | znh->type, &znh->gate, znh->ifindex, |
3172 | false /*backup*/); | |
cd4bb96f MS |
3173 | if (nhlfe == NULL) |
3174 | return -1; | |
3175 | ||
3176 | /* Update backup info if present */ | |
3177 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3178 | if (znh->backup_num > NEXTHOP_MAX_BACKUPS) { |
3179 | nhlfe_del(nhlfe); | |
3180 | return -1; | |
3181 | } | |
3182 | ||
3183 | nhlfe->nexthop->backup_num = znh->backup_num; | |
3184 | memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx, | |
3185 | znh->backup_num); | |
cd4bb96f | 3186 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); |
301a687a MS |
3187 | } else { |
3188 | /* Ensure there's no stale backup info */ | |
3189 | UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3190 | nhlfe->nexthop->backup_num = 0; | |
cd4bb96f MS |
3191 | } |
3192 | ||
3193 | /* Queue LSP for processing. */ | |
3194 | if (lsp_processq_add(lsp)) | |
3195 | return -1; | |
3196 | ||
3197 | return 0; | |
3198 | } | |
3199 | ||
3200 | /* | |
3201 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3202 | */ | |
f2e7f4eb MS |
3203 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3204 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3205 | { |
cd4bb96f MS |
3206 | zebra_nhlfe_t *nhlfe; |
3207 | ||
cc1b9746 MS |
3208 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, |
3209 | znh->labels, znh->type, &znh->gate, | |
3210 | znh->ifindex, true /*backup*/); | |
cd4bb96f MS |
3211 | if (nhlfe == NULL) { |
3212 | if (IS_ZEBRA_DEBUG_MPLS) | |
3213 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3214 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3215 | return -1; |
3216 | } | |
3217 | ||
3218 | /* Queue LSP for processing. */ | |
d62a17ae | 3219 | if (lsp_processq_add(lsp)) |
3220 | return -1; | |
3221 | ||
3222 | return 0; | |
ce549947 RW |
3223 | } |
3224 | ||
31f937fb SM |
3225 | zebra_lsp_t *mpls_lsp_find(struct zebra_vrf *zvrf, mpls_label_t in_label) |
3226 | { | |
3227 | struct hash *lsp_table; | |
3228 | zebra_ile_t tmp_ile; | |
3229 | ||
3230 | /* Lookup table. */ | |
3231 | lsp_table = zvrf->lsp_table; | |
3232 | if (!lsp_table) | |
3233 | return NULL; | |
3234 | ||
3235 | /* If entry is not present, exit. */ | |
3236 | tmp_ile.in_label = in_label; | |
3237 | return hash_lookup(lsp_table, &tmp_ile); | |
3238 | } | |
3239 | ||
ce549947 RW |
3240 | /* |
3241 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3242 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3243 | */ | |
d62a17ae | 3244 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3245 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
cc1b9746 MS |
3246 | const union g_addr *gate, ifindex_t ifindex, |
3247 | bool backup_p) | |
d62a17ae | 3248 | { |
3249 | struct hash *lsp_table; | |
3250 | zebra_ile_t tmp_ile; | |
3251 | zebra_lsp_t *lsp; | |
3252 | zebra_nhlfe_t *nhlfe; | |
cc1b9746 | 3253 | char buf[NEXTHOP_STRLEN]; |
4a2a5236 | 3254 | bool schedule_lsp = false; |
d62a17ae | 3255 | |
3256 | /* Lookup table. */ | |
3257 | lsp_table = zvrf->lsp_table; | |
3258 | if (!lsp_table) | |
3259 | return -1; | |
3260 | ||
3261 | /* If entry is not present, exit. */ | |
3262 | tmp_ile.in_label = in_label; | |
3263 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3264 | if (!lsp) | |
3265 | return 0; | |
cc1b9746 MS |
3266 | |
3267 | if (backup_p) | |
3268 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3269 | gate, ifindex); | |
3270 | else | |
3271 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, | |
3272 | ifindex); | |
d62a17ae | 3273 | if (!nhlfe) |
3274 | return 0; | |
3275 | ||
3276 | if (IS_ZEBRA_DEBUG_MPLS) { | |
43a9f66c | 3277 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3278 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", |
3279 | in_label, type, buf, nhlfe->flags); | |
3280 | } | |
3281 | ||
4a2a5236 MS |
3282 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) || |
3283 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) | |
3284 | schedule_lsp = true; | |
3285 | ||
d62a17ae | 3286 | /* Mark NHLFE for delete or directly delete, as appropriate. */ |
4a2a5236 | 3287 | if (schedule_lsp) { |
d62a17ae | 3288 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); |
4a2a5236 MS |
3289 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); |
3290 | ||
3291 | if (IS_ZEBRA_DEBUG_MPLS) | |
3292 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
3293 | lsp->ile.in_label, lsp->flags); | |
d62a17ae | 3294 | if (lsp_processq_add(lsp)) |
3295 | return -1; | |
3296 | } else { | |
3297 | nhlfe_del(nhlfe); | |
3298 | ||
3299 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3300 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3301 | } |
3302 | return 0; | |
ce549947 RW |
3303 | } |
3304 | ||
ea6b290b RW |
3305 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3306 | mpls_label_t in_label) | |
3307 | { | |
3308 | struct hash *lsp_table; | |
3309 | zebra_ile_t tmp_ile; | |
3310 | zebra_lsp_t *lsp; | |
3311 | ||
3312 | /* Lookup table. */ | |
3313 | lsp_table = zvrf->lsp_table; | |
3314 | if (!lsp_table) | |
3315 | return -1; | |
3316 | ||
3317 | /* If entry is not present, exit. */ | |
3318 | tmp_ile.in_label = in_label; | |
3319 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3320 | if (!lsp) | |
3321 | return 0; | |
3322 | ||
3323 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3324 | } | |
3325 | ||
ce549947 | 3326 | /* |
651105b5 | 3327 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3328 | * If no other NHLFEs exist, the entry would be deleted. |
3329 | */ | |
651105b5 | 3330 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3331 | { |
651105b5 | 3332 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 3333 | zebra_lsp_t *lsp; |
3334 | struct hash *lsp_table; | |
ce549947 | 3335 | |
e3b78da8 | 3336 | lsp = (zebra_lsp_t *)bucket->data; |
ee70f629 | 3337 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3338 | return; |
ce549947 | 3339 | |
651105b5 | 3340 | lsp_table = args->lsp_table; |
d62a17ae | 3341 | if (!lsp_table) |
3342 | return; | |
ce549947 | 3343 | |
651105b5 | 3344 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3345 | } |
3346 | ||
3347 | /* | |
651105b5 RW |
3348 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3349 | * LSP type. | |
ce549947 | 3350 | */ |
651105b5 RW |
3351 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3352 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3353 | { |
3354 | struct route_table *table; | |
3355 | struct route_node *rn; | |
3356 | struct route_entry *re; | |
3357 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3358 | struct nexthop_group *nhg; |
3359 | bool update; | |
d62a17ae | 3360 | |
3361 | /* Process routes of interested address-families. */ | |
3362 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3363 | if (!table) | |
3364 | return; | |
3365 | ||
3366 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3367 | update = false; |
3368 | ||
a2addae8 | 3369 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3370 | struct nhg_hash_entry *new_nhe; |
da137142 | 3371 | |
f2e7f4eb | 3372 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3373 | |
f2e7f4eb MS |
3374 | nhg = &new_nhe->nhg; |
3375 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3376 | nexthop = nexthop->next) { |
651105b5 | 3377 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3378 | continue; |
3379 | ||
d62a17ae | 3380 | nexthop_del_labels(nexthop); |
3381 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3382 | SET_FLAG(re->status, | |
332ad713 | 3383 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3384 | update = true; |
3385 | } | |
3386 | ||
3387 | /* Check for backup info and update that also */ | |
3388 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3389 | if (nhg != NULL) { | |
3390 | for (nexthop = nhg->nexthop; nexthop; | |
3391 | nexthop = nexthop->next) { | |
3392 | if (nexthop->nh_label_type != lsp_type) | |
3393 | continue; | |
3394 | ||
3395 | nexthop_del_labels(nexthop); | |
3396 | SET_FLAG(re->status, | |
3397 | ROUTE_ENTRY_CHANGED); | |
3398 | SET_FLAG(re->status, | |
3399 | ROUTE_ENTRY_LABELS_CHANGED); | |
3400 | update = true; | |
3401 | } | |
d62a17ae | 3402 | } |
da137142 | 3403 | |
19474c9c | 3404 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3405 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3406 | |
f2e7f4eb | 3407 | zebra_nhg_free(new_nhe); |
407c87a6 | 3408 | } |
d62a17ae | 3409 | |
3410 | if (update) | |
3411 | rib_queue_add(rn); | |
3412 | } | |
ce549947 RW |
3413 | } |
3414 | ||
1c1cf002 | 3415 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3416 | /* |
3417 | * Check that the label values used in LSP creation are consistent. The | |
3418 | * main criteria is that if there is ECMP, the label operation must still | |
3419 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3420 | * to current HW restrictions. | |
3421 | */ | |
d62a17ae | 3422 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3423 | mpls_label_t in_label, | |
3424 | mpls_label_t out_label, | |
3425 | enum nexthop_types_t gtype, | |
3426 | union g_addr *gate, ifindex_t ifindex) | |
3427 | { | |
3428 | struct hash *slsp_table; | |
3429 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3430 | zebra_lsp_t *lsp; |
3431 | zebra_nhlfe_t *nhlfe; | |
3432 | const struct nexthop *nh; | |
d62a17ae | 3433 | |
3434 | /* Lookup table. */ | |
3435 | slsp_table = zvrf->slsp_table; | |
3436 | if (!slsp_table) | |
3437 | return 0; | |
3438 | ||
3439 | /* If entry is not present, exit. */ | |
3440 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3441 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3442 | if (!lsp) | |
d62a17ae | 3443 | return 1; |
3444 | ||
608a57c0 MS |
3445 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3446 | gtype, gate, ifindex); | |
3447 | if (nhlfe) { | |
3448 | nh = nhlfe->nexthop; | |
3449 | ||
3450 | if (nh == NULL || nh->nh_label == NULL) | |
3451 | return 0; | |
3452 | ||
3453 | if (nh->nh_label->label[0] == out_label) | |
d62a17ae | 3454 | return 1; |
3455 | ||
3456 | /* If not only NHLFE, cannot allow label change. */ | |
608a57c0 MS |
3457 | if (nhlfe != nhlfe_list_first(&lsp->nhlfe_list) || |
3458 | nhlfe_list_next(&lsp->nhlfe_list, nhlfe) != NULL) | |
d62a17ae | 3459 | return 0; |
3460 | } else { | |
3461 | /* If other NHLFEs exist, label operation must match. */ | |
608a57c0 MS |
3462 | nhlfe = nhlfe_list_first(&lsp->nhlfe_list); |
3463 | if (nhlfe != NULL) { | |
d62a17ae | 3464 | int cur_op, new_op; |
3465 | ||
608a57c0 MS |
3466 | nh = nhlfe->nexthop; |
3467 | ||
3468 | if (nh == NULL || nh->nh_label == NULL) | |
3469 | return 0; | |
3470 | ||
3471 | cur_op = (nh->nh_label->label[0] == | |
ee70f629 | 3472 | MPLS_LABEL_IMPLICIT_NULL); |
70e98a7f | 3473 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3474 | if (cur_op != new_op) |
3475 | return 0; | |
3476 | } | |
3477 | } | |
3478 | ||
3479 | /* Label values are good. */ | |
3480 | return 1; | |
7758e3f3 | 3481 | } |
1c1cf002 | 3482 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3483 | |
3484 | /* | |
3485 | * Add static LSP entry. This may be the first entry for this incoming label | |
3486 | * or an additional nexthop; an existing entry may also have outgoing label | |
3487 | * changed. | |
3488 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3489 | * NHLFEs). | |
3490 | */ | |
d62a17ae | 3491 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3492 | mpls_label_t out_label, | |
3493 | enum nexthop_types_t gtype, union g_addr *gate, | |
3494 | ifindex_t ifindex) | |
3495 | { | |
3496 | struct hash *slsp_table; | |
3497 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3498 | zebra_lsp_t *lsp; |
3499 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3500 | char buf[BUFSIZ]; |
3501 | ||
3502 | /* Lookup table. */ | |
3503 | slsp_table = zvrf->slsp_table; | |
3504 | if (!slsp_table) | |
3505 | return -1; | |
3506 | ||
e4a1ec74 | 3507 | /* Find or create LSP. */ |
d62a17ae | 3508 | tmp_ile.in_label = in_label; |
608a57c0 MS |
3509 | lsp = hash_get(slsp_table, &tmp_ile, lsp_alloc); |
3510 | if (!lsp) | |
d62a17ae | 3511 | return -1; |
e4a1ec74 | 3512 | |
608a57c0 MS |
3513 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, gtype, gate, |
3514 | ifindex); | |
3515 | if (nhlfe) { | |
3516 | struct nexthop *nh = nhlfe->nexthop; | |
3517 | ||
3518 | assert(nh); | |
3519 | assert(nh->nh_label); | |
3520 | ||
3521 | /* Compare existing nexthop */ | |
3522 | if (nh->nh_label->num_labels == 1 && | |
3523 | nh->nh_label->label[0] == out_label) | |
d62a17ae | 3524 | /* No change */ |
3525 | return 0; | |
3526 | ||
3527 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3528 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3529 | zlog_debug( |
3efd0893 | 3530 | "Upd static LSP in-label %u nexthop %s out-label %u (old %u)", |
608a57c0 MS |
3531 | in_label, buf, out_label, |
3532 | nh->nh_label->label[0]); | |
3533 | } | |
3534 | if (nh->nh_label->num_labels == 1) | |
3535 | nh->nh_label->label[0] = out_label; | |
3536 | else { | |
3537 | nexthop_del_labels(nh); | |
3538 | nexthop_add_labels(nh, ZEBRA_LSP_STATIC, 1, &out_label); | |
d62a17ae | 3539 | } |
608a57c0 | 3540 | |
d62a17ae | 3541 | } else { |
3542 | /* Add static LSP entry to this nexthop */ | |
608a57c0 MS |
3543 | nhlfe = nhlfe_add(lsp, ZEBRA_LSP_STATIC, gtype, gate, |
3544 | ifindex, 1, &out_label, false /*backup*/); | |
3545 | if (!nhlfe) | |
d62a17ae | 3546 | return -1; |
3547 | ||
3548 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3549 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3550 | zlog_debug( |
3551 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3552 | in_label, buf, out_label); | |
3553 | } | |
3554 | } | |
3555 | ||
3556 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3557 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3558 | gtype, gate, ifindex)) | |
d62a17ae | 3559 | return -1; |
3560 | ||
3561 | return 0; | |
7758e3f3 | 3562 | } |
3563 | ||
3564 | /* | |
3565 | * Delete static LSP entry. This may be the delete of one particular | |
3566 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3567 | * all NHLFEs). | |
3568 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3569 | * LSP configuration. | |
3570 | */ | |
d62a17ae | 3571 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3572 | enum nexthop_types_t gtype, union g_addr *gate, | |
3573 | ifindex_t ifindex) | |
3574 | { | |
3575 | struct hash *slsp_table; | |
3576 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3577 | zebra_lsp_t *lsp; |
3578 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3579 | |
3580 | /* Lookup table. */ | |
3581 | slsp_table = zvrf->slsp_table; | |
3582 | if (!slsp_table) | |
3583 | return -1; | |
3584 | ||
3585 | /* If entry is not present, exit. */ | |
3586 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3587 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3588 | if (!lsp) | |
d62a17ae | 3589 | return 0; |
3590 | ||
3591 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3592 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3593 | if (IS_ZEBRA_DEBUG_MPLS) | |
3594 | zlog_debug("Del static LSP in-label %u", in_label); | |
3595 | ||
3596 | /* Uninstall entire LSP from the main table. */ | |
3597 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3598 | ||
3599 | /* Delete all static NHLFEs */ | |
608a57c0 MS |
3600 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3601 | nhlfe_del(nhlfe); | |
3602 | } | |
d62a17ae | 3603 | } else { |
3604 | /* Find specific NHLFE, exit if not found. */ | |
608a57c0 MS |
3605 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3606 | gtype, gate, ifindex); | |
3607 | if (!nhlfe) | |
d62a17ae | 3608 | return 0; |
3609 | ||
3610 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3611 | char buf[BUFSIZ]; | |
608a57c0 | 3612 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3613 | zlog_debug("Del static LSP in-label %u nexthop %s", |
3614 | in_label, buf); | |
3615 | } | |
3616 | ||
3617 | /* Uninstall LSP from the main table. */ | |
3618 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
cc1b9746 | 3619 | gate, ifindex, false); |
d62a17ae | 3620 | |
3621 | /* Delete static LSP NHLFE */ | |
608a57c0 | 3622 | nhlfe_del(nhlfe); |
d62a17ae | 3623 | } |
3624 | ||
3625 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
608a57c0 MS |
3626 | * above. |
3627 | */ | |
3628 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) { | |
3629 | lsp = hash_release(slsp_table, &tmp_ile); | |
3630 | XFREE(MTYPE_LSP, lsp); | |
d62a17ae | 3631 | } |
3632 | ||
3633 | return 0; | |
7758e3f3 | 3634 | } |
3635 | ||
40c7bdb0 | 3636 | /* |
3637 | * Schedule all MPLS label forwarding entries for processing. | |
3638 | * Called upon changes that may affect one or more of them such as | |
3639 | * interface or nexthop state changes. | |
3640 | */ | |
d62a17ae | 3641 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3642 | { |
d62a17ae | 3643 | if (!zvrf) |
3644 | return; | |
3645 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3646 | } |
3647 | ||
3ab18ff2 | 3648 | /* |
3649 | * Display MPLS label forwarding table for a specific LSP | |
3650 | * (VTY command handler). | |
3651 | */ | |
d62a17ae | 3652 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3653 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3654 | { |
d62a17ae | 3655 | struct hash *lsp_table; |
3656 | zebra_lsp_t *lsp; | |
3657 | zebra_ile_t tmp_ile; | |
3658 | json_object *json = NULL; | |
3ab18ff2 | 3659 | |
d62a17ae | 3660 | /* Lookup table. */ |
3661 | lsp_table = zvrf->lsp_table; | |
3662 | if (!lsp_table) | |
3663 | return; | |
3ab18ff2 | 3664 | |
d62a17ae | 3665 | /* If entry is not present, exit. */ |
3666 | tmp_ile.in_label = label; | |
3667 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3668 | if (!lsp) | |
3669 | return; | |
3ab18ff2 | 3670 | |
d62a17ae | 3671 | if (use_json) { |
3672 | json = lsp_json(lsp); | |
9d303b37 DL |
3673 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3674 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3675 | json_object_free(json); |
3676 | } else | |
a29c2887 | 3677 | lsp_print(vty, lsp); |
3ab18ff2 | 3678 | } |
3679 | ||
3680 | /* | |
3681 | * Display MPLS label forwarding table (VTY command handler). | |
3682 | */ | |
d62a17ae | 3683 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3684 | bool use_json) |
d62a17ae | 3685 | { |
3686 | char buf[BUFSIZ]; | |
3687 | json_object *json = NULL; | |
3688 | zebra_lsp_t *lsp = NULL; | |
3689 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3690 | struct listnode *node = NULL; |
3691 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3692 | ||
3693 | if (use_json) { | |
3694 | json = json_object_new_object(); | |
3695 | ||
3696 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3697 | json_object_object_add( | |
43a9f66c MS |
3698 | json, label2str(lsp->ile.in_label, buf, |
3699 | sizeof(buf)), | |
d62a17ae | 3700 | lsp_json(lsp)); |
3701 | ||
9d303b37 DL |
3702 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3703 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3704 | json_object_free(json); |
3705 | } else { | |
a971aeb6 RW |
3706 | struct ttable *tt; |
3707 | ||
3708 | /* Prepare table. */ | |
3709 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3710 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3711 | tt->style.cell.rpad = 2; | |
3712 | tt->style.corner = '+'; | |
3713 | ttable_restyle(tt); | |
3714 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3715 | |
3716 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3717 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3718 | struct nexthop *nexthop; |
3719 | const char *out_label_str; | |
3720 | char nh_buf[NEXTHOP_STRLEN]; | |
3721 | ||
d62a17ae | 3722 | nexthop = nhlfe->nexthop; |
3723 | ||
3724 | switch (nexthop->type) { | |
996c9314 | 3725 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3726 | struct zebra_ns *zns; |
b9abd9ad DS |
3727 | struct interface *ifp; |
3728 | ||
86f07f44 PG |
3729 | zns = zebra_ns_lookup(NS_DEFAULT); |
3730 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3731 | zns, nexthop->ifindex); |
3732 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3733 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3734 | break; |
3735 | } | |
d62a17ae | 3736 | case NEXTHOP_TYPE_IPV4: |
3737 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3738 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3739 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3740 | break; |
3741 | case NEXTHOP_TYPE_IPV6: | |
3742 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3743 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3744 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3745 | break; |
3746 | default: | |
3747 | break; | |
3748 | } | |
3749 | ||
b9abd9ad | 3750 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3751 | out_label_str = mpls_label2str( |
3752 | nexthop->nh_label->num_labels, | |
3753 | &nexthop->nh_label->label[0], | |
43a9f66c | 3754 | buf, sizeof(buf), 1); |
b9abd9ad | 3755 | else |
a971aeb6 RW |
3756 | out_label_str = "-"; |
3757 | ||
3758 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3759 | lsp->ile.in_label, | |
3760 | nhlfe_type2str(nhlfe->type), | |
3761 | nh_buf, out_label_str); | |
d62a17ae | 3762 | } |
3763 | } | |
3764 | ||
a971aeb6 RW |
3765 | /* Dump the generated table. */ |
3766 | if (tt->nrows > 1) { | |
3767 | char *table = ttable_dump(tt, "\n"); | |
3768 | vty_out(vty, "%s\n", table); | |
3769 | XFREE(MTYPE_TMP, table); | |
3770 | } | |
3771 | ttable_del(tt); | |
d62a17ae | 3772 | } |
3773 | ||
6a154c88 | 3774 | list_delete(&lsp_list); |
3ab18ff2 | 3775 | } |
3776 | ||
608a57c0 MS |
3777 | /* |
3778 | * Create printable string for static LSP configuration. | |
3779 | */ | |
3780 | static char *nhlfe_config_str(const zebra_nhlfe_t *nhlfe, char *buf, int size) | |
3781 | { | |
3782 | const struct nexthop *nh; | |
3783 | ||
3784 | nh = nhlfe->nexthop; | |
3785 | ||
3786 | buf[0] = '\0'; | |
3787 | switch (nh->type) { | |
3788 | case NEXTHOP_TYPE_IPV4: | |
3789 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, size); | |
3790 | break; | |
3791 | case NEXTHOP_TYPE_IPV6: | |
3792 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3793 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, size); | |
3794 | if (nh->ifindex) | |
3795 | strlcat(buf, | |
3796 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3797 | size); | |
3798 | break; | |
3799 | default: | |
3800 | break; | |
3801 | } | |
3802 | ||
3803 | return buf; | |
3804 | } | |
3805 | ||
7758e3f3 | 3806 | /* |
3807 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3808 | */ | |
d62a17ae | 3809 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3810 | { | |
608a57c0 MS |
3811 | zebra_lsp_t *lsp; |
3812 | zebra_nhlfe_t *nhlfe; | |
3813 | struct nexthop *nh; | |
d62a17ae | 3814 | struct listnode *node; |
3815 | struct list *slsp_list = | |
608a57c0 | 3816 | hash_get_sorted_list(zvrf->slsp_table, lsp_cmp); |
d62a17ae | 3817 | |
608a57c0 MS |
3818 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, lsp)) { |
3819 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
0af35d90 | 3820 | char buf[BUFSIZ]; |
d62a17ae | 3821 | char lstr[30]; |
3822 | ||
608a57c0 MS |
3823 | nh = nhlfe->nexthop; |
3824 | if (nh == NULL || nh->nh_label == NULL) | |
3825 | continue; | |
3826 | ||
3827 | nhlfe_config_str(nhlfe, buf, sizeof(buf)); | |
3828 | ||
3829 | switch (nh->nh_label->label[0]) { | |
70e98a7f DS |
3830 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3831 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3832 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3833 | break; | |
70e98a7f | 3834 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3835 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3836 | break; | |
3837 | default: | |
772270f3 | 3838 | snprintf(lstr, sizeof(lstr), "%u", |
608a57c0 | 3839 | nh->nh_label->label[0]); |
d62a17ae | 3840 | break; |
3841 | } | |
3842 | ||
608a57c0 | 3843 | vty_out(vty, "mpls lsp %u %s %s\n", lsp->ile.in_label, |
d62a17ae | 3844 | buf, lstr); |
3845 | } | |
3846 | } | |
b78b820d | 3847 | |
6a154c88 | 3848 | list_delete(&slsp_list); |
d62a17ae | 3849 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3850 | } |
3851 | ||
1b6d5c7e VV |
3852 | /* |
3853 | * Add/update global label block. | |
3854 | */ | |
d7c0a89a QY |
3855 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3856 | uint32_t end_label) | |
1b6d5c7e | 3857 | { |
d62a17ae | 3858 | zvrf->mpls_srgb.start_label = start_label; |
3859 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3860 | |
d62a17ae | 3861 | /* Evaluate registered FECs to see if any get a label or not. */ |
3862 | fec_evaluate(zvrf); | |
3863 | return 0; | |
1b6d5c7e VV |
3864 | } |
3865 | ||
3866 | /* | |
3867 | * Delete global label block. | |
3868 | */ | |
d62a17ae | 3869 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3870 | { |
d62a17ae | 3871 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3872 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3873 | |
d62a17ae | 3874 | /* Process registered FECs to clear their local label, if needed. */ |
3875 | fec_evaluate(zvrf); | |
3876 | return 0; | |
1b6d5c7e VV |
3877 | } |
3878 | ||
3879 | /* | |
3880 | * Display MPLS global label block configuration (VTY command handler). | |
3881 | */ | |
d62a17ae | 3882 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3883 | { |
d62a17ae | 3884 | if (zvrf->mpls_srgb.start_label == 0) |
3885 | return 0; | |
1b6d5c7e | 3886 | |
d62a17ae | 3887 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3888 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3889 | vty_out(vty, "mpls label global-block %u %u\n", | |
3890 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3891 | } | |
1b6d5c7e | 3892 | |
d62a17ae | 3893 | return 1; |
1b6d5c7e VV |
3894 | } |
3895 | ||
84915b0a | 3896 | /* |
3897 | * Called when VRF becomes inactive, cleans up information but keeps | |
3898 | * the table itself. | |
84915b0a | 3899 | */ |
3900 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3901 | { | |
c2e10644 MS |
3902 | struct zebra_vrf *def_zvrf; |
3903 | afi_t afi; | |
3904 | ||
3905 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3906 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3907 | else { | |
3908 | /* | |
3909 | * For other vrfs, we try to remove associated LSPs; we locate | |
3910 | * the LSPs in the default vrf. | |
3911 | */ | |
3912 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3913 | ||
3914 | /* At shutdown, the default may be gone already */ | |
3915 | if (def_zvrf == NULL) | |
3916 | return; | |
3917 | ||
3918 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3919 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3920 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3921 | } | |
3922 | } | |
84915b0a | 3923 | } |
3924 | ||
40c7bdb0 | 3925 | /* |
3926 | * Called upon process exiting, need to delete LSP forwarding | |
3927 | * entries from the kernel. | |
3928 | * NOTE: Currently supported only for default VRF. | |
3929 | */ | |
d62a17ae | 3930 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3931 | { |
d62a17ae | 3932 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3933 | hash_clean(zvrf->lsp_table, NULL); | |
3934 | hash_free(zvrf->lsp_table); | |
3935 | hash_clean(zvrf->slsp_table, NULL); | |
3936 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3937 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3938 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3939 | } |
3940 | ||
7758e3f3 | 3941 | /* |
3942 | * Allocate MPLS tables for this VRF and do other initialization. | |
3943 | * NOTE: Currently supported only for default VRF. | |
3944 | */ | |
d62a17ae | 3945 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3946 | { |
d62a17ae | 3947 | if (!zvrf) |
3948 | return; | |
996c9314 LB |
3949 | zvrf->slsp_table = |
3950 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3951 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3952 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3953 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3954 | zvrf->mpls_flags = 0; | |
3955 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3956 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3957 | } |
3958 | ||
3959 | /* | |
3960 | * Global MPLS initialization. | |
3961 | */ | |
d62a17ae | 3962 | void zebra_mpls_init(void) |
7758e3f3 | 3963 | { |
d62a17ae | 3964 | mpls_enabled = 0; |
33c32282 | 3965 | |
d62a17ae | 3966 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3967 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3968 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3969 | return; |
3970 | } | |
fe6c7157 | 3971 | |
2561d12e | 3972 | if (!mpls_processq_init()) |
d62a17ae | 3973 | mpls_enabled = 1; |
453844ab | 3974 | |
21ccc0cf | 3975 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 3976 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 3977 | } |