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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", | |
1505 | inet_ntoa(nexthop->gate.ipv4)); | |
1506 | break; | |
1507 | case NEXTHOP_TYPE_IPV6: | |
1508 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1509 | json_object_string_add( | |
1510 | json_nhlfe, "nexthop", | |
1511 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1512 | ||
1513 | if (nexthop->ifindex) | |
4a7371e9 DS |
1514 | json_object_string_add(json_nhlfe, "interface", |
1515 | ifindex2ifname(nexthop->ifindex, | |
1516 | nexthop->vrf_id)); | |
d62a17ae | 1517 | break; |
1518 | default: | |
1519 | break; | |
1520 | } | |
3c0e1622 MS |
1521 | |
1522 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
1523 | json_backups = json_object_new_array(); | |
1524 | for (i = 0; i < nexthop->backup_num; i++) { | |
1525 | json_object_array_add( | |
1526 | json_backups, | |
1527 | json_object_new_int(nexthop->backup_idx[i])); | |
1528 | } | |
1529 | ||
1530 | json_object_object_add(json_nhlfe, "backupIndex", | |
1531 | json_backups); | |
1532 | } | |
1533 | ||
d62a17ae | 1534 | return json_nhlfe; |
b78b820d | 1535 | } |
1536 | ||
3ab18ff2 | 1537 | /* |
1538 | * Print the NHLFE for a LSP forwarding entry. | |
1539 | */ | |
3c0e1622 MS |
1540 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty, |
1541 | const char *indent) | |
d62a17ae | 1542 | { |
1543 | struct nexthop *nexthop; | |
a29c2887 | 1544 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1545 | |
1546 | nexthop = nhlfe->nexthop; | |
1547 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1548 | return; | |
1549 | ||
1550 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1551 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1552 | mpls_label2str(nexthop->nh_label->num_labels, |
1553 | nexthop->nh_label->label, | |
1554 | buf, sizeof(buf), 0), | |
d62a17ae | 1555 | nhlfe->distance); |
3c0e1622 MS |
1556 | |
1557 | if (indent) | |
1558 | vty_out(vty, "%s", indent); | |
1559 | ||
d62a17ae | 1560 | switch (nexthop->type) { |
1561 | case NEXTHOP_TYPE_IPV4: | |
1562 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1563 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1564 | if (nexthop->ifindex) | |
1565 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1566 | ifindex2ifname(nexthop->ifindex, |
1567 | nexthop->vrf_id)); | |
d62a17ae | 1568 | break; |
1569 | case NEXTHOP_TYPE_IPV6: | |
1570 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1571 | vty_out(vty, " via %s", | |
2896f40e MS |
1572 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
1573 | sizeof(buf))); | |
d62a17ae | 1574 | if (nexthop->ifindex) |
1575 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1576 | ifindex2ifname(nexthop->ifindex, |
1577 | nexthop->vrf_id)); | |
d62a17ae | 1578 | break; |
1579 | default: | |
1580 | break; | |
1581 | } | |
5e29e1a1 MS |
1582 | vty_out(vty, "%s", |
1583 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)" | |
1584 | : ""); | |
996c9314 LB |
1585 | vty_out(vty, "%s", |
1586 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1587 | : ""); | |
d62a17ae | 1588 | vty_out(vty, "\n"); |
3ab18ff2 | 1589 | } |
1590 | ||
1591 | /* | |
1592 | * Print an LSP forwarding entry. | |
1593 | */ | |
a29c2887 | 1594 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp) |
3ab18ff2 | 1595 | { |
a29c2887 | 1596 | zebra_nhlfe_t *nhlfe, *backup; |
474aebd9 | 1597 | int i, j; |
3ab18ff2 | 1598 | |
d62a17ae | 1599 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1600 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1601 | : ""); | |
3ab18ff2 | 1602 | |
a29c2887 | 1603 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3c0e1622 | 1604 | nhlfe_print(nhlfe, vty, NULL); |
a29c2887 | 1605 | |
3c0e1622 | 1606 | if (nhlfe->nexthop == NULL || |
474aebd9 MS |
1607 | !CHECK_FLAG(nhlfe->nexthop->flags, |
1608 | NEXTHOP_FLAG_HAS_BACKUP)) | |
1609 | continue; | |
a29c2887 | 1610 | |
474aebd9 | 1611 | /* Backup nhlfes: find backups in backup list */ |
a29c2887 | 1612 | |
474aebd9 | 1613 | for (j = 0; j < nhlfe->nexthop->backup_num; j++) { |
a29c2887 | 1614 | i = 0; |
5e29e1a1 | 1615 | backup = NULL; |
a29c2887 | 1616 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { |
474aebd9 | 1617 | if (i == nhlfe->nexthop->backup_idx[j]) |
a29c2887 MS |
1618 | break; |
1619 | i++; | |
1620 | } | |
1621 | ||
1622 | if (backup) { | |
1623 | vty_out(vty, " [backup %d]", i); | |
3c0e1622 | 1624 | nhlfe_print(backup, vty, " "); |
a29c2887 MS |
1625 | } |
1626 | } | |
1627 | } | |
3ab18ff2 | 1628 | } |
1629 | ||
1630 | /* | |
b78b820d | 1631 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1632 | */ |
d62a17ae | 1633 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1634 | { |
d62a17ae | 1635 | zebra_nhlfe_t *nhlfe = NULL; |
1636 | json_object *json = json_object_new_object(); | |
1637 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1638 | |
d62a17ae | 1639 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1640 | |
d62a17ae | 1641 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1642 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1643 | |
ee70f629 | 1644 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1645 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1646 | |
d62a17ae | 1647 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
3c0e1622 MS |
1648 | json_nhlfe_list = NULL; |
1649 | ||
1650 | ||
1651 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
1652 | if (json_nhlfe_list == NULL) | |
1653 | json_nhlfe_list = json_object_new_array(); | |
1654 | ||
1655 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
1656 | } | |
1657 | ||
1658 | if (json_nhlfe_list) | |
1659 | json_object_object_add(json, "backupNexthops", json_nhlfe_list); | |
1660 | ||
d62a17ae | 1661 | return json; |
b78b820d | 1662 | } |
1663 | ||
1664 | ||
1665 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1666 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1667 | { |
d62a17ae | 1668 | unsigned int i; |
e3b78da8 | 1669 | struct hash_bucket *hb; |
d62a17ae | 1670 | struct list *sorted_list = list_new(); |
b78b820d | 1671 | |
d62a17ae | 1672 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1673 | |
d62a17ae | 1674 | for (i = 0; i < hash->size; i++) |
1675 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1676 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1677 | |
d62a17ae | 1678 | return sorted_list; |
3ab18ff2 | 1679 | } |
1680 | ||
7758e3f3 | 1681 | /* |
b78b820d | 1682 | * Compare two LSPs based on their label values. |
7758e3f3 | 1683 | */ |
e4a1ec74 | 1684 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1685 | { |
d62a17ae | 1686 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1687 | return -1; | |
7758e3f3 | 1688 | |
d62a17ae | 1689 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1690 | return 1; | |
7758e3f3 | 1691 | |
d62a17ae | 1692 | return 0; |
7758e3f3 | 1693 | } |
1694 | ||
40c7bdb0 | 1695 | /* |
1696 | * Initialize work queue for processing changed LSPs. | |
1697 | */ | |
2561d12e | 1698 | static int mpls_processq_init(void) |
40c7bdb0 | 1699 | { |
e2353ec2 DS |
1700 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1701 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1702 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1703 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1704 | return -1; |
1705 | } | |
40c7bdb0 | 1706 | |
e2353ec2 DS |
1707 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1708 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1709 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1710 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1711 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1712 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1713 | |
d62a17ae | 1714 | return 0; |
40c7bdb0 | 1715 | } |
1716 | ||
7758e3f3 | 1717 | |
d37f4d6c MS |
1718 | /* |
1719 | * Process LSP update results from zebra dataplane. | |
1720 | */ | |
1721 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1722 | { | |
1723 | struct zebra_vrf *zvrf; | |
31f937fb | 1724 | mpls_label_t label; |
d37f4d6c MS |
1725 | zebra_ile_t tmp_ile; |
1726 | struct hash *lsp_table; | |
1727 | zebra_lsp_t *lsp; | |
1728 | zebra_nhlfe_t *nhlfe; | |
1729 | struct nexthop *nexthop; | |
1730 | enum dplane_op_e op; | |
8841f96e | 1731 | enum zebra_dplane_result status; |
31f937fb | 1732 | enum zebra_sr_policy_update_label_mode update_mode; |
d37f4d6c MS |
1733 | |
1734 | op = dplane_ctx_get_op(ctx); | |
1735 | status = dplane_ctx_get_status(ctx); | |
1736 | ||
1737 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1738 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1739 | ctx, dplane_op2str(op), | |
1740 | dplane_ctx_get_in_label(ctx), | |
1741 | dplane_res2str(status)); | |
1742 | ||
31f937fb SM |
1743 | label = dplane_ctx_get_in_label(ctx); |
1744 | ||
d37f4d6c MS |
1745 | switch (op) { |
1746 | case DPLANE_OP_LSP_INSTALL: | |
1747 | case DPLANE_OP_LSP_UPDATE: | |
1748 | /* Look for zebra LSP object */ | |
1749 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1750 | if (zvrf == NULL) | |
1751 | break; | |
1752 | ||
1753 | lsp_table = zvrf->lsp_table; | |
1754 | ||
31f937fb | 1755 | tmp_ile.in_label = label; |
d37f4d6c MS |
1756 | lsp = hash_lookup(lsp_table, &tmp_ile); |
1757 | if (lsp == NULL) { | |
1758 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1759 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1760 | ctx, dplane_ctx_get_in_label(ctx)); | |
1761 | break; | |
1762 | } | |
1763 | ||
1764 | /* TODO -- Confirm that this result is still 'current' */ | |
1765 | ||
c3753405 | 1766 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1767 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1768 | clear_nhlfe_installed(lsp); | |
1769 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1770 | "LSP Install Failure: in-label %u", | |
1771 | lsp->ile.in_label); | |
c3753405 MS |
1772 | break; |
1773 | } | |
1774 | ||
1775 | /* Update zebra object */ | |
1776 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1777 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
1778 | nexthop = nhlfe->nexthop; | |
1779 | if (!nexthop) | |
1780 | continue; | |
1781 | ||
1782 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) && | |
1783 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) { | |
1784 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1785 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1786 | } | |
d37f4d6c MS |
1787 | } |
1788 | ||
31f937fb SM |
1789 | update_mode = (op == DPLANE_OP_LSP_INSTALL) |
1790 | ? ZEBRA_SR_POLICY_LABEL_CREATED | |
1791 | : ZEBRA_SR_POLICY_LABEL_UPDATED; | |
1792 | zebra_sr_policy_label_update(label, update_mode); | |
d37f4d6c MS |
1793 | break; |
1794 | ||
1795 | case DPLANE_OP_LSP_DELETE: | |
31f937fb | 1796 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
3fd385c6 DS |
1797 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
1798 | "LSP Deletion Failure: in-label %u", | |
1799 | dplane_ctx_get_in_label(ctx)); | |
31f937fb SM |
1800 | break; |
1801 | } | |
1802 | zebra_sr_policy_label_update(label, | |
1803 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
d37f4d6c MS |
1804 | break; |
1805 | ||
1806 | default: | |
1807 | break; | |
1808 | ||
1809 | } /* Switch */ | |
1810 | ||
1811 | dplane_ctx_fini(&ctx); | |
1812 | } | |
1813 | ||
104e3ad9 | 1814 | /* |
68110c42 MS |
1815 | * Process LSP installation info from two sets of nhlfes: a set from |
1816 | * a dplane notification, and a set from the zebra LSP object. Update | |
1817 | * counters of installed nexthops, and return whether the LSP has changed. | |
104e3ad9 | 1818 | */ |
68110c42 MS |
1819 | static bool compare_notif_nhlfes(const struct nhlfe_list_head *ctx_head, |
1820 | struct nhlfe_list_head *nhlfe_head, | |
1821 | int *start_counter, int *end_counter) | |
104e3ad9 | 1822 | { |
104e3ad9 MS |
1823 | zebra_nhlfe_t *nhlfe; |
1824 | const zebra_nhlfe_t *ctx_nhlfe; | |
1825 | struct nexthop *nexthop; | |
1826 | const struct nexthop *ctx_nexthop; | |
68110c42 | 1827 | int start_count = 0, end_count = 0; |
188a00e0 | 1828 | bool changed_p = false; |
104e3ad9 MS |
1829 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1830 | ||
68110c42 | 1831 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { |
104e3ad9 MS |
1832 | char buf[NEXTHOP_STRLEN]; |
1833 | ||
1834 | nexthop = nhlfe->nexthop; | |
1835 | if (!nexthop) | |
1836 | continue; | |
1837 | ||
1838 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1839 | start_count++; | |
1840 | ||
68110c42 | 1841 | ctx_nhlfe = NULL; |
104e3ad9 | 1842 | ctx_nexthop = NULL; |
68110c42 | 1843 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
104e3ad9 MS |
1844 | ctx_nexthop = ctx_nhlfe->nexthop; |
1845 | if (!ctx_nexthop) | |
1846 | continue; | |
1847 | ||
1848 | if ((ctx_nexthop->type == nexthop->type) && | |
1849 | nexthop_same(ctx_nexthop, nexthop)) { | |
1850 | /* Matched */ | |
1851 | break; | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | if (is_debug) | |
1856 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1857 | ||
1858 | if (ctx_nhlfe && ctx_nexthop) { | |
1859 | if (is_debug) { | |
1860 | const char *tstr = ""; | |
1861 | ||
1862 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1863 | NHLFE_FLAG_INSTALLED)) | |
1864 | tstr = "not "; | |
1865 | ||
1866 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1867 | buf, tstr); | |
1868 | } | |
1869 | ||
188a00e0 | 1870 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1871 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1872 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1873 | |
1874 | if (!CHECK_FLAG(nhlfe->flags, | |
1875 | NHLFE_FLAG_INSTALLED)) | |
1876 | changed_p = true; | |
104e3ad9 MS |
1877 | |
1878 | /* Update counter */ | |
1879 | end_count++; | |
188a00e0 MS |
1880 | } else { |
1881 | ||
1882 | if (CHECK_FLAG(nhlfe->flags, | |
1883 | NHLFE_FLAG_INSTALLED)) | |
1884 | changed_p = true; | |
1885 | } | |
1886 | ||
1887 | } else { | |
1888 | /* Not mentioned in lfib set -> uninstalled */ | |
1889 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1890 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1891 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1892 | changed_p = true; | |
1893 | } | |
1894 | ||
1895 | if (is_debug) | |
1896 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1897 | buf); | |
1898 | } | |
1899 | } | |
1900 | ||
68110c42 MS |
1901 | if (start_counter) |
1902 | *start_counter += start_count; | |
1903 | if (end_counter) | |
1904 | *end_counter += end_count; | |
188a00e0 | 1905 | |
68110c42 MS |
1906 | return changed_p; |
1907 | } | |
188a00e0 | 1908 | |
68110c42 MS |
1909 | /* |
1910 | * Update an lsp nhlfe list from a dplane context, typically an async | |
1911 | * notification context. Update the LSP list to match the installed | |
1912 | * status from the context's list. | |
1913 | */ | |
1914 | static int update_nhlfes_from_ctx(struct nhlfe_list_head *nhlfe_head, | |
1915 | const struct nhlfe_list_head *ctx_head) | |
1916 | { | |
1917 | int ret = 0; | |
1918 | zebra_nhlfe_t *nhlfe; | |
1919 | const zebra_nhlfe_t *ctx_nhlfe; | |
1920 | struct nexthop *nexthop; | |
1921 | const struct nexthop *ctx_nexthop; | |
1922 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
1923 | ||
1924 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { | |
188a00e0 MS |
1925 | char buf[NEXTHOP_STRLEN]; |
1926 | ||
1927 | nexthop = nhlfe->nexthop; | |
1928 | if (!nexthop) | |
1929 | continue; | |
1930 | ||
c3753405 | 1931 | ctx_nhlfe = NULL; |
188a00e0 | 1932 | ctx_nexthop = NULL; |
c3753405 | 1933 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
188a00e0 MS |
1934 | ctx_nexthop = ctx_nhlfe->nexthop; |
1935 | if (!ctx_nexthop) | |
1936 | continue; | |
1937 | ||
1938 | if ((ctx_nexthop->type == nexthop->type) && | |
1939 | nexthop_same(ctx_nexthop, nexthop)) { | |
1940 | /* Matched */ | |
1941 | break; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | if (is_debug) | |
1946 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1947 | ||
1948 | if (ctx_nhlfe && ctx_nexthop) { | |
1949 | ||
1950 | /* Bring zebra nhlfe install state into sync */ | |
1951 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1952 | NHLFE_FLAG_INSTALLED)) { | |
c3753405 MS |
1953 | if (is_debug) |
1954 | zlog_debug("%s: matched lsp nhlfe %s (installed)", | |
1955 | __func__, buf); | |
188a00e0 MS |
1956 | |
1957 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
00a9b150 | 1958 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 MS |
1959 | |
1960 | } else { | |
c3753405 MS |
1961 | if (is_debug) |
1962 | zlog_debug("%s: matched lsp nhlfe %s (not installed)", | |
1963 | __func__, buf); | |
188a00e0 | 1964 | |
104e3ad9 | 1965 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1966 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 | 1967 | } |
104e3ad9 MS |
1968 | |
1969 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
1970 | NEXTHOP_FLAG_FIB)) { |
1971 | SET_FLAG(nhlfe->nexthop->flags, | |
1972 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1973 | SET_FLAG(nhlfe->nexthop->flags, |
1974 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1975 | } else { |
1976 | UNSET_FLAG(nhlfe->nexthop->flags, | |
1977 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1978 | UNSET_FLAG(nhlfe->nexthop->flags, |
1979 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1980 | } |
1981 | ||
104e3ad9 MS |
1982 | } else { |
1983 | /* Not mentioned in lfib set -> uninstalled */ | |
c3753405 MS |
1984 | if (is_debug) |
1985 | zlog_debug("%s: no match for lsp nhlfe %s", | |
1986 | __func__, buf); | |
104e3ad9 | 1987 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1988 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
104e3ad9 | 1989 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
188a00e0 | 1990 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
1991 | } |
1992 | } | |
1993 | ||
68110c42 MS |
1994 | return ret; |
1995 | } | |
1996 | ||
1997 | /* | |
1998 | * Process async dplane notifications. | |
1999 | */ | |
2000 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2001 | { | |
2002 | struct zebra_vrf *zvrf; | |
2003 | zebra_ile_t tmp_ile; | |
2004 | struct hash *lsp_table; | |
2005 | zebra_lsp_t *lsp; | |
2006 | const struct nhlfe_list_head *ctx_list; | |
2007 | int start_count = 0, end_count = 0; /* Installed counts */ | |
2008 | bool changed_p = false; | |
2009 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
2010 | ||
2011 | if (is_debug) | |
2012 | zlog_debug("LSP dplane notif, in-label %u", | |
2013 | dplane_ctx_get_in_label(ctx)); | |
2014 | ||
2015 | /* Look for zebra LSP object */ | |
2016 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
2017 | if (zvrf == NULL) | |
2018 | goto done; | |
2019 | ||
2020 | lsp_table = zvrf->lsp_table; | |
2021 | ||
2022 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
2023 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2024 | if (lsp == NULL) { | |
2025 | if (is_debug) | |
2026 | zlog_debug("dplane LSP notif: in-label %u not found", | |
2027 | dplane_ctx_get_in_label(ctx)); | |
2028 | goto done; | |
2029 | } | |
2030 | ||
2031 | /* | |
2032 | * The dataplane/forwarding plane is notifying zebra about the state | |
2033 | * of the nexthops associated with this LSP. First, we take a | |
2034 | * pre-scan pass to determine whether the LSP has transitioned | |
2035 | * from installed -> uninstalled. In that case, we need to have | |
2036 | * the existing state of the LSP objects available before making | |
2037 | * any changes. | |
2038 | */ | |
2039 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2040 | ||
2041 | changed_p = compare_notif_nhlfes(ctx_list, &lsp->nhlfe_list, | |
2042 | &start_count, &end_count); | |
2043 | ||
2044 | if (is_debug) | |
2045 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2046 | start_count, end_count, | |
2047 | changed_p ? ", changed" : ""); | |
2048 | ||
2049 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2050 | ||
2051 | if (compare_notif_nhlfes(ctx_list, &lsp->backup_nhlfe_list, | |
2052 | &start_count, &end_count)) | |
2053 | /* Avoid accidentally setting back to 'false' */ | |
2054 | changed_p = true; | |
2055 | ||
2056 | if (is_debug) | |
2057 | zlog_debug("LSP dplane notif: lfib backups, start_count %d, end_count %d%s", | |
2058 | start_count, end_count, | |
2059 | changed_p ? ", changed" : ""); | |
2060 | ||
2061 | /* | |
2062 | * Has the LSP become uninstalled? We need the existing state of the | |
2063 | * nexthops/nhlfes at this point so we know what to delete. | |
2064 | */ | |
2065 | if (start_count > 0 && end_count == 0) { | |
2066 | /* Inform other lfibs */ | |
2067 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2068 | } | |
2069 | ||
2070 | /* | |
2071 | * Now we take a second pass and bring the zebra | |
2072 | * nexthop state into sync with the forwarding-plane state. | |
2073 | */ | |
2074 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2075 | update_nhlfes_from_ctx(&lsp->nhlfe_list, ctx_list); | |
2076 | ||
2077 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2078 | update_nhlfes_from_ctx(&lsp->backup_nhlfe_list, ctx_list); | |
2079 | ||
188a00e0 | 2080 | if (end_count > 0) { |
104e3ad9 | 2081 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2082 | |
2083 | if (changed_p) | |
2084 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2085 | ||
2086 | } else { | |
104e3ad9 MS |
2087 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2088 | clear_nhlfe_installed(lsp); | |
2089 | } | |
2090 | ||
2091 | done: | |
2092 | dplane_ctx_fini(&ctx); | |
2093 | } | |
2094 | ||
a64448ba DS |
2095 | /* |
2096 | * Install dynamic LSP entry. | |
2097 | */ | |
d62a17ae | 2098 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2099 | struct route_entry *re) | |
a64448ba | 2100 | { |
d62a17ae | 2101 | struct route_table *table; |
2102 | zebra_fec_t *fec; | |
a64448ba | 2103 | |
d62a17ae | 2104 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2105 | if (!table) | |
2106 | return -1; | |
a64448ba | 2107 | |
d62a17ae | 2108 | /* See if there is a configured label binding for this FEC. */ |
2109 | fec = fec_find(table, &rn->p); | |
2110 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2111 | return 0; | |
a64448ba | 2112 | |
d62a17ae | 2113 | /* We cannot install a label forwarding entry if local label is the |
2114 | * implicit-null label. | |
2115 | */ | |
70e98a7f | 2116 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2117 | return 0; |
a64448ba | 2118 | |
d62a17ae | 2119 | if (lsp_install(zvrf, fec->label, rn, re)) |
2120 | return -1; | |
a64448ba | 2121 | |
d62a17ae | 2122 | return 0; |
a64448ba DS |
2123 | } |
2124 | ||
2125 | /* | |
2126 | * Uninstall dynamic LSP entry, if any. | |
2127 | */ | |
d62a17ae | 2128 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2129 | struct route_entry *re) | |
a64448ba | 2130 | { |
d62a17ae | 2131 | struct route_table *table; |
2132 | zebra_fec_t *fec; | |
a64448ba | 2133 | |
d62a17ae | 2134 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2135 | if (!table) | |
2136 | return -1; | |
a64448ba | 2137 | |
d62a17ae | 2138 | /* See if there is a configured label binding for this FEC. */ |
2139 | fec = fec_find(table, &rn->p); | |
2140 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2141 | return 0; | |
a64448ba | 2142 | |
d62a17ae | 2143 | /* Uninstall always removes all dynamic NHLFEs. */ |
2144 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2145 | } |
2146 | ||
d4cb23d7 | 2147 | /* |
cd4bb96f MS |
2148 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2149 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 MS |
2150 | */ |
2151 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2152 | enum lsp_types_t lsp_type, | |
2153 | enum nexthop_types_t gtype, | |
963a9803 | 2154 | const union g_addr *gate, |
d4cb23d7 | 2155 | ifindex_t ifindex, |
5065db0a | 2156 | uint8_t num_labels, |
cd4bb96f | 2157 | const mpls_label_t *out_labels) |
d4cb23d7 MS |
2158 | { |
2159 | /* Just a public pass-through to the internal implementation */ | |
5065db0a | 2160 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
cc1b9746 | 2161 | out_labels, false /*backup*/); |
d4cb23d7 MS |
2162 | } |
2163 | ||
cd4bb96f MS |
2164 | /* |
2165 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2166 | * This path only changes the LSP object - nothing is scheduled for | |
2167 | * processing, for example. | |
2168 | */ | |
2169 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nhlfe(zebra_lsp_t *lsp, | |
2170 | enum lsp_types_t lsp_type, | |
2171 | enum nexthop_types_t gtype, | |
963a9803 | 2172 | const union g_addr *gate, |
cd4bb96f MS |
2173 | ifindex_t ifindex, |
2174 | uint8_t num_labels, | |
2175 | const mpls_label_t *out_labels) | |
2176 | { | |
2177 | /* Just a public pass-through to the internal implementation */ | |
cc1b9746 MS |
2178 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2179 | out_labels, true); | |
cd4bb96f MS |
2180 | } |
2181 | ||
2182 | /* | |
2183 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2184 | */ | |
2185 | zebra_nhlfe_t *zebra_mpls_lsp_add_nh(zebra_lsp_t *lsp, | |
2186 | enum lsp_types_t lsp_type, | |
2187 | const struct nexthop *nh) | |
2188 | { | |
2189 | zebra_nhlfe_t *nhlfe; | |
2190 | ||
2191 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2192 | return NULL; | |
2193 | ||
2194 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
cc1b9746 MS |
2195 | nh->nh_label->num_labels, nh->nh_label->label, |
2196 | false /*backup*/); | |
cd4bb96f MS |
2197 | |
2198 | return nhlfe; | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2203 | * return the newly-added object. | |
2204 | */ | |
2205 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nh(zebra_lsp_t *lsp, | |
2206 | enum lsp_types_t lsp_type, | |
2207 | const struct nexthop *nh) | |
2208 | { | |
2209 | zebra_nhlfe_t *nhlfe; | |
2210 | ||
2211 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2212 | return NULL; | |
2213 | ||
cc1b9746 | 2214 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, |
cd4bb96f | 2215 | nh->ifindex, nh->nh_label->num_labels, |
cc1b9746 | 2216 | nh->nh_label->label, true); |
cd4bb96f MS |
2217 | |
2218 | return nhlfe; | |
2219 | } | |
2220 | ||
d4cb23d7 MS |
2221 | /* |
2222 | * Free an allocated NHLFE | |
2223 | */ | |
cd4bb96f | 2224 | void zebra_mpls_nhlfe_free(zebra_nhlfe_t *nhlfe) |
d4cb23d7 MS |
2225 | { |
2226 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2227 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2228 | } |
2229 | ||
5aba114a DS |
2230 | /* |
2231 | * Registration from a client for the label binding for a FEC. If a binding | |
2232 | * already exists, it is informed to the client. | |
28d58fd7 | 2233 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2234 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2235 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2236 | * is acceptable. If no label index then just register the specified label. |
2237 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2238 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2239 | */ |
d62a17ae | 2240 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2241 | uint32_t label, uint32_t label_index, |
2242 | struct zserv *client) | |
d62a17ae | 2243 | { |
2244 | struct route_table *table; | |
2245 | zebra_fec_t *fec; | |
2246 | char buf[BUFSIZ]; | |
57592a53 AD |
2247 | bool new_client; |
2248 | bool label_change = false; | |
d7c0a89a | 2249 | uint32_t old_label; |
57592a53 AD |
2250 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2251 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2252 | |
2253 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2254 | if (!table) | |
2255 | return -1; | |
2256 | ||
2257 | if (IS_ZEBRA_DEBUG_MPLS) | |
2258 | prefix2str(p, buf, BUFSIZ); | |
2259 | ||
57592a53 AD |
2260 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2261 | flog_err( | |
2262 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2263 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2264 | buf, label, label_index, | |
2265 | zebra_route_string(client->proto)); | |
2266 | return -1; | |
2267 | } | |
2268 | ||
d62a17ae | 2269 | /* Locate FEC */ |
2270 | fec = fec_find(table, p); | |
2271 | if (!fec) { | |
57592a53 | 2272 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2273 | if (!fec) { |
af4c2728 | 2274 | flog_err( |
e914ccbe | 2275 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2276 | "Failed to add FEC %s upon register, client %s", |
2277 | buf, zebra_route_string(client->proto)); | |
2278 | return -1; | |
2279 | } | |
2280 | ||
2281 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2282 | new_client = true; |
d62a17ae | 2283 | } else { |
57592a53 AD |
2284 | /* Check if the FEC has been statically defined in the config */ |
2285 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2286 | /* Client may register same FEC with different label index. */ |
2287 | new_client = | |
2288 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2289 | if (!new_client && fec->label_index == label_index |
2290 | && fec->label == label) | |
d62a17ae | 2291 | /* Duplicate register */ |
2292 | return 0; | |
2293 | ||
57592a53 | 2294 | /* Save current label, update the FEC */ |
d62a17ae | 2295 | old_label = fec->label; |
2296 | fec->label_index = label_index; | |
2297 | } | |
2298 | ||
2299 | if (new_client) | |
2300 | listnode_add(fec->client_list, client); | |
2301 | ||
2302 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2303 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2304 | have_label_index ? " index" : "", | |
2305 | have_label_index ? label_index : label, | |
2306 | new_client ? "registered" : "updated", | |
2307 | zebra_route_string(client->proto), | |
2308 | is_configured_fec | |
2309 | ? ", but using statically configured label" | |
2310 | : ""); | |
2311 | ||
2312 | /* If not a statically configured FEC, derive the local label | |
2313 | * from label index or use the provided label | |
d62a17ae | 2314 | */ |
57592a53 AD |
2315 | if (!is_configured_fec) { |
2316 | if (have_label_index) | |
2317 | fec_derive_label_from_index(zvrf, fec); | |
2318 | else | |
2319 | fec->label = label; | |
d62a17ae | 2320 | |
2321 | /* If no label change, exit. */ | |
2322 | if (fec->label == old_label) | |
2323 | return 0; | |
2324 | ||
57592a53 | 2325 | label_change = true; |
d62a17ae | 2326 | } |
2327 | ||
2328 | /* If new client or label change, update client and install or uninstall | |
2329 | * label forwarding entry as needed. | |
2330 | */ | |
2331 | /* Inform client of label, if needed. */ | |
2332 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2333 | if (IS_ZEBRA_DEBUG_MPLS) | |
2334 | zlog_debug("Update client label %u", fec->label); | |
2335 | fec_send(fec, client); | |
2336 | } | |
2337 | ||
2338 | if (new_client || label_change) | |
2339 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2340 | ||
2341 | return 0; | |
5aba114a DS |
2342 | } |
2343 | ||
2344 | /* | |
2345 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2346 | * itself is deleted if no other registered clients exist and there is no | |
2347 | * label bound to the FEC. | |
2348 | */ | |
d62a17ae | 2349 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2350 | struct zserv *client) | |
5aba114a | 2351 | { |
d62a17ae | 2352 | struct route_table *table; |
2353 | zebra_fec_t *fec; | |
2354 | char buf[BUFSIZ]; | |
5aba114a | 2355 | |
d62a17ae | 2356 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2357 | if (!table) | |
2358 | return -1; | |
5aba114a | 2359 | |
d62a17ae | 2360 | if (IS_ZEBRA_DEBUG_MPLS) |
2361 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2362 | |
d62a17ae | 2363 | fec = fec_find(table, p); |
2364 | if (!fec) { | |
e914ccbe | 2365 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
2dbe669b DA |
2366 | "Failed to find FEC %pFX upon unregister, client %s", |
2367 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2368 | return -1; |
2369 | } | |
5aba114a | 2370 | |
d62a17ae | 2371 | listnode_delete(fec->client_list, client); |
2372 | ||
2373 | if (IS_ZEBRA_DEBUG_MPLS) | |
2374 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2375 | zebra_route_string(client->proto)); | |
2376 | ||
2377 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2378 | * deleting, see if any LSP needs to be uninstalled. | |
2379 | */ | |
2380 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2381 | && list_isempty(fec->client_list)) { | |
2382 | mpls_label_t old_label = fec->label; | |
2383 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2384 | fec_change_update_lsp(zvrf, fec, old_label); | |
2385 | fec_del(fec); | |
2386 | } | |
5aba114a | 2387 | |
d62a17ae | 2388 | return 0; |
5aba114a DS |
2389 | } |
2390 | ||
2391 | /* | |
2392 | * Cleanup any FECs registered by this client. | |
2393 | */ | |
453844ab | 2394 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2395 | { |
453844ab | 2396 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2397 | struct route_node *rn; |
2398 | zebra_fec_t *fec; | |
2399 | struct listnode *node; | |
2400 | struct zserv *fec_client; | |
2401 | int af; | |
2402 | ||
2403 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2404 | if (zvrf->fec_table[af] == NULL) | |
2405 | continue; | |
2406 | ||
2407 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2408 | rn = route_next(rn)) { | |
2409 | fec = rn->info; | |
2410 | if (!fec || list_isempty(fec->client_list)) | |
2411 | continue; | |
2412 | ||
2413 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2414 | fec_client)) { | |
2415 | if (fec_client == client) { | |
2416 | listnode_delete(fec->client_list, | |
2417 | fec_client); | |
2418 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2419 | && list_isempty(fec->client_list)) | |
2420 | fec_del(fec); | |
2421 | break; | |
2422 | } | |
2423 | } | |
2424 | } | |
2425 | } | |
5aba114a | 2426 | |
d62a17ae | 2427 | return 0; |
5aba114a DS |
2428 | } |
2429 | ||
651105b5 RW |
2430 | struct lsp_uninstall_args { |
2431 | struct hash *lsp_table; | |
2432 | enum lsp_types_t type; | |
2433 | }; | |
2434 | ||
2435 | /* | |
2436 | * Cleanup MPLS labels registered by this client. | |
2437 | */ | |
2438 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2439 | { | |
2440 | struct vrf *vrf; | |
2441 | struct zebra_vrf *zvrf; | |
2442 | ||
2443 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2444 | struct lsp_uninstall_args args; | |
2445 | ||
2446 | zvrf = vrf->info; | |
2447 | if (!zvrf) | |
2448 | continue; | |
2449 | ||
2450 | /* Cleanup LSPs. */ | |
2451 | args.lsp_table = zvrf->lsp_table; | |
2452 | args.type = lsp_type_from_re_type(client->proto); | |
2453 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2454 | &args); | |
2455 | ||
2456 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2457 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2458 | lsp_type_from_re_type(client->proto)); | |
2459 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2460 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2461 | } |
2462 | ||
2463 | return 0; | |
2464 | } | |
2465 | ||
f31e084c DS |
2466 | /* |
2467 | * Return FEC (if any) to which this label is bound. | |
2468 | * Note: Only works for per-prefix binding and when the label is not | |
2469 | * implicit-null. | |
2470 | * TODO: Currently walks entire table, can optimize later with another | |
2471 | * hash.. | |
2472 | */ | |
d62a17ae | 2473 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2474 | mpls_label_t label) | |
2475 | { | |
2476 | struct route_node *rn; | |
2477 | zebra_fec_t *fec; | |
2478 | int af; | |
2479 | ||
2480 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2481 | if (zvrf->fec_table[af] == NULL) | |
2482 | continue; | |
2483 | ||
2484 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2485 | rn = route_next(rn)) { | |
2486 | if (!rn->info) | |
2487 | continue; | |
2488 | fec = rn->info; | |
2489 | if (fec->label == label) | |
2490 | return fec; | |
2491 | } | |
2492 | } | |
f31e084c | 2493 | |
d62a17ae | 2494 | return NULL; |
f31e084c DS |
2495 | } |
2496 | ||
2497 | /* | |
2498 | * Inform if specified label is currently bound to a FEC or not. | |
2499 | */ | |
d62a17ae | 2500 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2501 | { |
d62a17ae | 2502 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2503 | } |
2504 | ||
2505 | /* | |
5aba114a | 2506 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2507 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2508 | * label forwarding entry. | |
9d303b37 | 2509 | */ |
d62a17ae | 2510 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2511 | mpls_label_t in_label) | |
2512 | { | |
2513 | struct route_table *table; | |
2514 | zebra_fec_t *fec; | |
2515 | char buf[BUFSIZ]; | |
2516 | mpls_label_t old_label; | |
2517 | int ret = 0; | |
2518 | ||
2519 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2520 | if (!table) | |
2521 | return -1; | |
2522 | ||
2523 | if (IS_ZEBRA_DEBUG_MPLS) | |
2524 | prefix2str(p, buf, BUFSIZ); | |
2525 | ||
2526 | /* Update existing FEC or create a new one. */ | |
2527 | fec = fec_find(table, p); | |
2528 | if (!fec) { | |
2529 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2530 | MPLS_INVALID_LABEL_INDEX); | |
2531 | if (!fec) { | |
e914ccbe | 2532 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
2dbe669b | 2533 | "Failed to add FEC %pFX upon config", p); |
d62a17ae | 2534 | return -1; |
2535 | } | |
2536 | ||
2537 | if (IS_ZEBRA_DEBUG_MPLS) | |
2538 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2539 | } else { | |
2540 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2541 | if (fec->label == in_label) | |
2542 | /* Duplicate config */ | |
2543 | return 0; | |
2544 | ||
2545 | /* Label change, update clients. */ | |
2546 | old_label = fec->label; | |
2547 | if (IS_ZEBRA_DEBUG_MPLS) | |
2548 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2549 | ||
2550 | fec->label = in_label; | |
2551 | fec_update_clients(fec); | |
2552 | ||
2553 | /* Update label forwarding entries appropriately */ | |
2554 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2555 | } | |
2556 | ||
2557 | return ret; | |
f31e084c DS |
2558 | } |
2559 | ||
2560 | /* | |
5aba114a DS |
2561 | * Remove static FEC to label binding. If there are no clients registered |
2562 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2563 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2564 | * client may need to be updated with derived label. | |
f31e084c | 2565 | */ |
d62a17ae | 2566 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2567 | { | |
2568 | struct route_table *table; | |
2569 | zebra_fec_t *fec; | |
2570 | mpls_label_t old_label; | |
2571 | char buf[BUFSIZ]; | |
2572 | ||
2573 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2574 | if (!table) | |
2575 | return -1; | |
2576 | ||
2577 | fec = fec_find(table, p); | |
2578 | if (!fec) { | |
2579 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2580 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2581 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2582 | return -1; |
2583 | } | |
2584 | ||
2585 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2dbe669b | 2586 | zlog_debug("Delete fec %pFX label %u label index %u", p, |
57592a53 | 2587 | fec->label, fec->label_index); |
d62a17ae | 2588 | } |
2589 | ||
2590 | old_label = fec->label; | |
2591 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2592 | fec->label = MPLS_INVALID_LABEL; | |
2593 | ||
2594 | /* If no client exists, just delete the FEC. */ | |
2595 | if (list_isempty(fec->client_list)) { | |
2596 | fec_del(fec); | |
2597 | return 0; | |
2598 | } | |
2599 | ||
2600 | /* Derive the local label (from label index) or reset it. */ | |
2601 | fec_derive_label_from_index(zvrf, fec); | |
2602 | ||
2603 | /* If there is a label change, update clients. */ | |
2604 | if (fec->label == old_label) | |
2605 | return 0; | |
2606 | fec_update_clients(fec); | |
2607 | ||
2608 | /* Update label forwarding entries appropriately */ | |
2609 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2610 | } |
2611 | ||
2612 | /* | |
2613 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2614 | */ | |
d62a17ae | 2615 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2616 | { |
d62a17ae | 2617 | struct route_node *rn; |
2618 | int af; | |
2619 | zebra_fec_t *fec; | |
d62a17ae | 2620 | int write = 0; |
f31e084c | 2621 | |
d62a17ae | 2622 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2623 | if (zvrf->fec_table[af] == NULL) | |
2624 | continue; | |
f31e084c | 2625 | |
d62a17ae | 2626 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2627 | rn = route_next(rn)) { | |
2628 | if (!rn->info) | |
2629 | continue; | |
f31e084c | 2630 | |
d62a17ae | 2631 | char lstr[BUFSIZ]; |
2632 | fec = rn->info; | |
f31e084c | 2633 | |
d62a17ae | 2634 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2635 | continue; | |
f31e084c | 2636 | |
d62a17ae | 2637 | write = 1; |
2dbe669b | 2638 | vty_out(vty, "mpls label bind %pFX %s\n", &rn->p, |
d62a17ae | 2639 | label2str(fec->label, lstr, BUFSIZ)); |
2640 | } | |
2641 | } | |
f31e084c | 2642 | |
d62a17ae | 2643 | return write; |
f31e084c DS |
2644 | } |
2645 | ||
2646 | /* | |
2647 | * Display MPLS FEC to label binding (VTY command handler). | |
2648 | */ | |
d62a17ae | 2649 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2650 | { |
d62a17ae | 2651 | struct route_node *rn; |
2652 | int af; | |
f31e084c | 2653 | |
d62a17ae | 2654 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2655 | if (zvrf->fec_table[af] == NULL) | |
2656 | continue; | |
f31e084c | 2657 | |
d62a17ae | 2658 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2659 | rn = route_next(rn)) { | |
2660 | if (!rn->info) | |
2661 | continue; | |
2662 | fec_print(rn->info, vty); | |
2663 | } | |
2664 | } | |
f31e084c DS |
2665 | } |
2666 | ||
2667 | /* | |
2668 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2669 | */ | |
d62a17ae | 2670 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2671 | struct prefix *p) | |
f31e084c | 2672 | { |
d62a17ae | 2673 | struct route_table *table; |
2674 | struct route_node *rn; | |
f31e084c | 2675 | |
d62a17ae | 2676 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2677 | if (!table) | |
2678 | return; | |
f31e084c | 2679 | |
d62a17ae | 2680 | apply_mask(p); |
2681 | rn = route_node_lookup(table, p); | |
2682 | if (!rn) | |
2683 | return; | |
f31e084c | 2684 | |
d62a17ae | 2685 | route_unlock_node(rn); |
2686 | if (!rn->info) | |
2687 | return; | |
f31e084c | 2688 | |
d62a17ae | 2689 | fec_print(rn->info, vty); |
f31e084c DS |
2690 | } |
2691 | ||
f2e7f4eb MS |
2692 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2693 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2694 | { |
2695 | struct nhg_hash_entry *nhe; | |
2696 | ||
f2e7f4eb | 2697 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2698 | |
5463ce26 | 2699 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2700 | } |
2701 | ||
f2e7f4eb MS |
2702 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2703 | enum lsp_types_t type, | |
2704 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2705 | { |
f2e7f4eb MS |
2706 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2707 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2708 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2709 | nexthop_del_labels(nexthop); |
2710 | else | |
2711 | return false; | |
2712 | ||
2713 | return true; | |
2714 | } | |
2715 | ||
f2e7f4eb MS |
2716 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2717 | struct prefix *prefix, uint8_t route_type, | |
2718 | unsigned short route_instance) | |
d62a17ae | 2719 | { |
2720 | struct route_table *table; | |
2721 | struct route_node *rn; | |
2722 | struct route_entry *re; | |
2723 | struct nexthop *nexthop; | |
f2e7f4eb | 2724 | struct nhg_hash_entry *new_nhe; |
da137142 | 2725 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2726 | |
2727 | /* Lookup table. */ | |
da137142 | 2728 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2729 | if (!table) |
2730 | return -1; | |
2731 | ||
2732 | /* Lookup existing route */ | |
2733 | rn = route_node_get(table, prefix); | |
a2addae8 | 2734 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2735 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2736 | continue; | |
e132dea0 | 2737 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2738 | break; |
88d88a9c | 2739 | } |
d62a17ae | 2740 | if (re == NULL) |
2741 | return -1; | |
2742 | ||
da137142 | 2743 | /* |
f2e7f4eb MS |
2744 | * Nexthops are now shared by multiple routes, so we have to make |
2745 | * a local copy, modify the copy, then update the route. | |
da137142 | 2746 | */ |
f2e7f4eb | 2747 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2748 | |
f2e7f4eb MS |
2749 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2750 | nexthop_del_labels(nexthop); | |
2751 | ||
2752 | /* Update backup routes/nexthops also, if present. */ | |
2753 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2754 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2755 | nexthop = nexthop->next) | |
2756 | nexthop_del_labels(nexthop); | |
2757 | } | |
2758 | ||
2759 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2760 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2761 | ||
68110c42 MS |
2762 | /* This will create (or ref) a new nhe, so we will discard the local |
2763 | * temporary nhe | |
2764 | */ | |
f2e7f4eb MS |
2765 | mpls_zebra_nhe_update(re, afi, new_nhe); |
2766 | ||
2767 | zebra_nhg_free(new_nhe); | |
2768 | ||
2769 | rib_queue_add(rn); | |
2770 | ||
2771 | return 0; | |
2772 | } | |
2773 | ||
2774 | /* | |
2775 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2776 | * update its labels according to 'add_p', and return 'true' if successful. | |
2777 | */ | |
2778 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2779 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2780 | { | |
2781 | bool found = false, success = false; | |
2782 | struct nexthop *nexthop; | |
2783 | ||
2784 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2785 | switch (nexthop->type) { |
2786 | case NEXTHOP_TYPE_IPV4: | |
2787 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2788 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2789 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2790 | continue; |
f2e7f4eb MS |
2791 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2792 | &znh->gate.ipv4)) | |
d62a17ae | 2793 | continue; |
2794 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2795 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2796 | continue; |
f2e7f4eb | 2797 | |
8f77d0ee | 2798 | found = true; |
f2e7f4eb MS |
2799 | |
2800 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2801 | break; | |
2802 | ||
2803 | success = true; | |
8f77d0ee | 2804 | break; |
d62a17ae | 2805 | case NEXTHOP_TYPE_IPV6: |
2806 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2807 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2808 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2809 | continue; |
f2e7f4eb MS |
2810 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2811 | &znh->gate.ipv6)) | |
d62a17ae | 2812 | continue; |
2813 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2814 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2815 | continue; |
f2e7f4eb | 2816 | |
8f77d0ee | 2817 | found = true; |
f2e7f4eb MS |
2818 | |
2819 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2820 | break; | |
2821 | success = true; | |
8f77d0ee | 2822 | break; |
d62a17ae | 2823 | default: |
2824 | break; | |
2825 | } | |
f2e7f4eb MS |
2826 | |
2827 | if (found) | |
2828 | break; | |
d62a17ae | 2829 | } |
d62a17ae | 2830 | |
f2e7f4eb MS |
2831 | return success; |
2832 | } | |
19474c9c | 2833 | |
f2e7f4eb MS |
2834 | /* |
2835 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2836 | * using zapi message info. | |
2837 | * There are several changes that need to be made, in several zebra | |
2838 | * data structures, so we want to do all the work required at once. | |
2839 | */ | |
2840 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2841 | const struct zapi_labels *zl) | |
2842 | { | |
2843 | int i, counter, ret = 0; | |
2dbe669b | 2844 | char buf[NEXTHOP_STRLEN]; |
f2e7f4eb MS |
2845 | const struct zapi_nexthop *znh; |
2846 | struct route_table *table; | |
2847 | struct route_node *rn = NULL; | |
2848 | struct route_entry *re = NULL; | |
2849 | struct nhg_hash_entry *new_nhe = NULL; | |
2850 | bool found; | |
2851 | afi_t afi = AFI_IP; | |
2852 | const struct prefix *prefix = NULL; | |
2853 | struct hash *lsp_table; | |
2854 | zebra_ile_t tmp_ile; | |
2855 | zebra_lsp_t *lsp = NULL; | |
19474c9c | 2856 | |
f2e7f4eb MS |
2857 | /* Prep LSP for add case */ |
2858 | if (add_p) { | |
2859 | /* Lookup table. */ | |
2860 | lsp_table = zvrf->lsp_table; | |
2861 | if (!lsp_table) | |
2862 | return -1; | |
2863 | ||
2864 | /* Find or create LSP object */ | |
2865 | tmp_ile.in_label = zl->local_label; | |
2866 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2867 | if (!lsp) | |
2868 | return -1; | |
da137142 SW |
2869 | } |
2870 | ||
f2e7f4eb MS |
2871 | /* Prep for route/FEC update if requested */ |
2872 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2873 | prefix = &zl->route.prefix; | |
da137142 | 2874 | |
f2e7f4eb | 2875 | afi = family2afi(prefix->family); |
ce549947 | 2876 | |
f2e7f4eb MS |
2877 | /* Lookup table. */ |
2878 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2879 | if (table) { | |
2880 | /* Lookup existing route */ | |
2881 | rn = route_node_get(table, prefix); | |
2882 | RNODE_FOREACH_RE(rn, re) { | |
2883 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2884 | continue; | |
2885 | if (re->type == zl->route.type && | |
2886 | re->instance == zl->route.instance) | |
2887 | break; | |
2888 | } | |
2889 | } | |
ea6b290b | 2890 | |
f2e7f4eb MS |
2891 | if (re) { |
2892 | /* | |
2893 | * Copy over current nexthops into a temporary group. | |
2894 | * We can't just change the values here since the nhgs | |
2895 | * are shared and if the labels change, we'll need | |
2896 | * to find or create a new nhg. We need to create | |
2897 | * a whole temporary group, make changes to it, | |
2898 | * then attach that to the route. | |
2899 | */ | |
2900 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2901 | |
f2e7f4eb MS |
2902 | } else { |
2903 | /* | |
2904 | * The old version of the zapi code | |
2905 | * attempted to manage LSPs before trying to | |
2906 | * find a route/FEC, so we'll continue that way. | |
2907 | */ | |
2dbe669b DA |
2908 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) |
2909 | zlog_debug( | |
2910 | "%s: FTN update requested: no route for prefix %pFX", | |
2911 | __func__, prefix); | |
f2e7f4eb MS |
2912 | } |
2913 | } | |
2914 | ||
2915 | /* | |
2916 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2917 | */ | |
2918 | ||
2919 | counter = 0; | |
2920 | for (i = 0; i < zl->nexthop_num; i++) { | |
2921 | ||
2922 | znh = &zl->nexthops[i]; | |
2923 | ||
2924 | /* Attempt LSP update */ | |
2925 | if (add_p) | |
2926 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2927 | else | |
2928 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2929 | zl->local_label, znh->type, | |
cc1b9746 MS |
2930 | &znh->gate, znh->ifindex, |
2931 | false); | |
f2e7f4eb MS |
2932 | if (ret < 0) { |
2933 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2934 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2935 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
2936 | __func__, (add_p ? "" : "un"), | |
2937 | zl->local_label, buf); | |
2938 | } | |
ea6b290b | 2939 | continue; |
f2e7f4eb MS |
2940 | } |
2941 | ||
2942 | /* Attempt route/FEC update if requested */ | |
2943 | if (re == NULL) | |
2944 | continue; | |
2945 | ||
2946 | /* Search the route's nexthops for a match, and update it. */ | |
2947 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
2948 | znh); | |
2949 | if (found) { | |
2950 | counter++; | |
2951 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
2952 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
2953 | zlog_debug( |
2954 | "%s: Unable to update FEC: prefix %pFX, label %u, znh %s", | |
2955 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb | 2956 | } |
ea6b290b | 2957 | } |
ea6b290b | 2958 | |
f2e7f4eb MS |
2959 | /* |
2960 | * Process backup LSPs/nexthop entries also. We associate backup | |
2961 | * LSP info with backup nexthops. | |
2962 | */ | |
2963 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
2964 | goto znh_done; | |
19474c9c | 2965 | |
f2e7f4eb | 2966 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 2967 | |
f2e7f4eb | 2968 | znh = &zl->backup_nexthops[i]; |
19474c9c | 2969 | |
f2e7f4eb MS |
2970 | if (add_p) |
2971 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
2972 | else | |
cc1b9746 MS |
2973 | ret = mpls_lsp_uninstall(zvrf, zl->type, |
2974 | zl->local_label, | |
2975 | znh->type, &znh->gate, | |
2976 | znh->ifindex, true); | |
f2e7f4eb MS |
2977 | |
2978 | if (ret < 0) { | |
2979 | if (IS_ZEBRA_DEBUG_RECV || | |
2980 | IS_ZEBRA_DEBUG_MPLS) { | |
2981 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2982 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
2983 | __func__, (add_p ? "" : "un"), | |
2984 | zl->local_label, buf); | |
2985 | } | |
2986 | continue; | |
2987 | } | |
19474c9c | 2988 | |
f2e7f4eb MS |
2989 | /* Attempt backup nexthop/FEC update if requested */ |
2990 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
2991 | continue; | |
19474c9c | 2992 | |
f2e7f4eb MS |
2993 | /* Search the route's backup nexthops for a match |
2994 | * and update it. | |
2995 | */ | |
2996 | found = ftn_update_znh(add_p, zl->type, | |
2997 | new_nhe->backup_info->nhe->nhg.nexthop, | |
2998 | znh); | |
2999 | if (found) { | |
3000 | counter++; | |
3001 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3002 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3003 | zlog_debug( |
3004 | "%s: Unable to update backup FEC: prefix %pFX, label %u, znh %s", | |
3005 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb MS |
3006 | } |
3007 | } | |
ea6b290b | 3008 | |
f2e7f4eb MS |
3009 | znh_done: |
3010 | ||
3011 | /* | |
3012 | * If we made changes, update the route, and schedule it | |
3013 | * for rib processing | |
3014 | */ | |
3015 | if (re != NULL && counter > 0) { | |
3016 | assert(rn != NULL); | |
3017 | ||
3018 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3019 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3020 | ||
3021 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3022 | ||
3023 | rib_queue_add(rn); | |
3024 | } | |
3025 | ||
3026 | if (new_nhe) | |
3027 | zebra_nhg_free(new_nhe); | |
3028 | ||
3029 | return ret; | |
ea6b290b RW |
3030 | } |
3031 | ||
ce549947 RW |
3032 | /* |
3033 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3034 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3035 | * the out-label for an existing NHLFE (update case). | |
3036 | */ | |
cd4bb96f MS |
3037 | static zebra_nhlfe_t * |
3038 | lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3039 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3040 | enum nexthop_types_t gtype, const union g_addr *gate, | |
cc1b9746 | 3041 | ifindex_t ifindex, bool is_backup) |
d62a17ae | 3042 | { |
d62a17ae | 3043 | zebra_nhlfe_t *nhlfe; |
cd4bb96f | 3044 | char buf[MPLS_LABEL_STRLEN]; |
cc1b9746 | 3045 | const char *backup_str; |
e4a1ec74 | 3046 | |
cc1b9746 MS |
3047 | if (is_backup) { |
3048 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3049 | gate, ifindex); | |
3050 | backup_str = "backup "; | |
d62a17ae | 3051 | } else { |
cc1b9746 MS |
3052 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, |
3053 | ifindex); | |
3054 | backup_str = ""; | |
d62a17ae | 3055 | } |
3056 | ||
cd4bb96f MS |
3057 | if (nhlfe) { |
3058 | struct nexthop *nh = nhlfe->nexthop; | |
3059 | ||
3060 | assert(nh); | |
3061 | assert(nh->nh_label); | |
3062 | ||
3063 | /* Clear deleted flag (in case it was set) */ | |
3064 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3065 | if (nh->nh_label->num_labels == num_out_labels | |
3066 | && !memcmp(nh->nh_label->label, out_labels, | |
3067 | sizeof(mpls_label_t) * num_out_labels)) | |
3068 | /* No change */ | |
3069 | return nhlfe; | |
3070 | ||
3071 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3072 | char buf2[MPLS_LABEL_STRLEN]; | |
3073 | char buf3[MPLS_LABEL_STRLEN]; | |
3074 | ||
3075 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3076 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3077 | sizeof(buf2), 0); | |
3078 | mpls_label2str(nh->nh_label->num_labels, | |
3079 | nh->nh_label->label, buf3, sizeof(buf3), | |
3080 | 0); | |
3081 | ||
cc1b9746 MS |
3082 | zlog_debug("LSP in-label %u type %d %snexthop %s out-label(s) changed to %s (old %s)", |
3083 | lsp->ile.in_label, type, backup_str, buf, | |
3084 | buf2, buf3); | |
cd4bb96f MS |
3085 | } |
3086 | ||
3087 | /* Update out label(s), trigger processing. */ | |
3088 | if (nh->nh_label->num_labels == num_out_labels) | |
3089 | memcpy(nh->nh_label->label, out_labels, | |
3090 | sizeof(mpls_label_t) * num_out_labels); | |
3091 | else { | |
3092 | nexthop_del_labels(nh); | |
3093 | nexthop_add_labels(nh, type, num_out_labels, | |
3094 | out_labels); | |
3095 | } | |
3096 | } else { | |
3097 | /* Add LSP entry to this nexthop */ | |
cc1b9746 MS |
3098 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3099 | num_out_labels, out_labels, is_backup); | |
cd4bb96f MS |
3100 | if (!nhlfe) |
3101 | return NULL; | |
3102 | ||
3103 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3104 | char buf2[MPLS_LABEL_STRLEN]; | |
3105 | ||
3106 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3107 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3108 | sizeof(buf2), 0); | |
3109 | ||
cc1b9746 MS |
3110 | zlog_debug("Add LSP in-label %u type %d %snexthop %s out-label(s) %s", |
3111 | lsp->ile.in_label, type, backup_str, buf, | |
3112 | buf2); | |
cd4bb96f MS |
3113 | } |
3114 | ||
3115 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3116 | } | |
3117 | ||
3118 | /* Mark NHLFE, queue LSP for processing. */ | |
3119 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3120 | ||
3121 | return nhlfe; | |
3122 | } | |
3123 | ||
3124 | /* | |
3125 | * Install an LSP and forwarding entry; used primarily | |
301a687a | 3126 | * from vrf zapi message processing. |
cd4bb96f MS |
3127 | */ |
3128 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3129 | mpls_label_t in_label, uint8_t num_out_labels, | |
3130 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3131 | const union g_addr *gate, ifindex_t ifindex) | |
3132 | { | |
3133 | struct hash *lsp_table; | |
3134 | zebra_ile_t tmp_ile; | |
3135 | zebra_lsp_t *lsp; | |
3136 | zebra_nhlfe_t *nhlfe; | |
3137 | ||
3138 | /* Lookup table. */ | |
3139 | lsp_table = zvrf->lsp_table; | |
3140 | if (!lsp_table) | |
3141 | return -1; | |
3142 | ||
3143 | /* Find or create LSP object */ | |
3144 | tmp_ile.in_label = in_label; | |
3145 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3146 | if (!lsp) | |
3147 | return -1; | |
3148 | ||
3149 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
cc1b9746 | 3150 | gate, ifindex, false /*backup*/); |
cd4bb96f MS |
3151 | if (nhlfe == NULL) |
3152 | return -1; | |
3153 | ||
3154 | /* Queue LSP for processing. */ | |
3155 | if (lsp_processq_add(lsp)) | |
3156 | return -1; | |
3157 | ||
3158 | return 0; | |
3159 | } | |
3160 | ||
3161 | /* | |
3162 | * Install or replace NHLFE, using info from zapi nexthop | |
3163 | */ | |
f2e7f4eb MS |
3164 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3165 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3166 | { |
cd4bb96f MS |
3167 | zebra_nhlfe_t *nhlfe; |
3168 | ||
cd4bb96f | 3169 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
cc1b9746 MS |
3170 | znh->type, &znh->gate, znh->ifindex, |
3171 | false /*backup*/); | |
cd4bb96f MS |
3172 | if (nhlfe == NULL) |
3173 | return -1; | |
3174 | ||
3175 | /* Update backup info if present */ | |
3176 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3177 | if (znh->backup_num > NEXTHOP_MAX_BACKUPS) { |
3178 | nhlfe_del(nhlfe); | |
3179 | return -1; | |
3180 | } | |
3181 | ||
3182 | nhlfe->nexthop->backup_num = znh->backup_num; | |
3183 | memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx, | |
3184 | znh->backup_num); | |
cd4bb96f | 3185 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); |
301a687a MS |
3186 | } else { |
3187 | /* Ensure there's no stale backup info */ | |
3188 | UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3189 | nhlfe->nexthop->backup_num = 0; | |
cd4bb96f MS |
3190 | } |
3191 | ||
3192 | /* Queue LSP for processing. */ | |
3193 | if (lsp_processq_add(lsp)) | |
3194 | return -1; | |
3195 | ||
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | /* | |
3200 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3201 | */ | |
f2e7f4eb MS |
3202 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3203 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3204 | { |
cd4bb96f MS |
3205 | zebra_nhlfe_t *nhlfe; |
3206 | ||
cc1b9746 MS |
3207 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, |
3208 | znh->labels, znh->type, &znh->gate, | |
3209 | znh->ifindex, true /*backup*/); | |
cd4bb96f MS |
3210 | if (nhlfe == NULL) { |
3211 | if (IS_ZEBRA_DEBUG_MPLS) | |
3212 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3213 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3214 | return -1; |
3215 | } | |
3216 | ||
3217 | /* Queue LSP for processing. */ | |
d62a17ae | 3218 | if (lsp_processq_add(lsp)) |
3219 | return -1; | |
3220 | ||
3221 | return 0; | |
ce549947 RW |
3222 | } |
3223 | ||
31f937fb SM |
3224 | zebra_lsp_t *mpls_lsp_find(struct zebra_vrf *zvrf, mpls_label_t in_label) |
3225 | { | |
3226 | struct hash *lsp_table; | |
3227 | zebra_ile_t tmp_ile; | |
3228 | ||
3229 | /* Lookup table. */ | |
3230 | lsp_table = zvrf->lsp_table; | |
3231 | if (!lsp_table) | |
3232 | return NULL; | |
3233 | ||
3234 | /* If entry is not present, exit. */ | |
3235 | tmp_ile.in_label = in_label; | |
3236 | return hash_lookup(lsp_table, &tmp_ile); | |
3237 | } | |
3238 | ||
ce549947 RW |
3239 | /* |
3240 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3241 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3242 | */ | |
d62a17ae | 3243 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3244 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
cc1b9746 MS |
3245 | const union g_addr *gate, ifindex_t ifindex, |
3246 | bool backup_p) | |
d62a17ae | 3247 | { |
3248 | struct hash *lsp_table; | |
3249 | zebra_ile_t tmp_ile; | |
3250 | zebra_lsp_t *lsp; | |
3251 | zebra_nhlfe_t *nhlfe; | |
cc1b9746 | 3252 | char buf[NEXTHOP_STRLEN]; |
4a2a5236 | 3253 | bool schedule_lsp = false; |
d62a17ae | 3254 | |
3255 | /* Lookup table. */ | |
3256 | lsp_table = zvrf->lsp_table; | |
3257 | if (!lsp_table) | |
3258 | return -1; | |
3259 | ||
3260 | /* If entry is not present, exit. */ | |
3261 | tmp_ile.in_label = in_label; | |
3262 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3263 | if (!lsp) | |
3264 | return 0; | |
cc1b9746 MS |
3265 | |
3266 | if (backup_p) | |
3267 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3268 | gate, ifindex); | |
3269 | else | |
3270 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, | |
3271 | ifindex); | |
d62a17ae | 3272 | if (!nhlfe) |
3273 | return 0; | |
3274 | ||
3275 | if (IS_ZEBRA_DEBUG_MPLS) { | |
43a9f66c | 3276 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3277 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", |
3278 | in_label, type, buf, nhlfe->flags); | |
3279 | } | |
3280 | ||
4a2a5236 MS |
3281 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) || |
3282 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) | |
3283 | schedule_lsp = true; | |
3284 | ||
d62a17ae | 3285 | /* Mark NHLFE for delete or directly delete, as appropriate. */ |
4a2a5236 | 3286 | if (schedule_lsp) { |
d62a17ae | 3287 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); |
4a2a5236 MS |
3288 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); |
3289 | ||
3290 | if (IS_ZEBRA_DEBUG_MPLS) | |
3291 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
3292 | lsp->ile.in_label, lsp->flags); | |
d62a17ae | 3293 | if (lsp_processq_add(lsp)) |
3294 | return -1; | |
3295 | } else { | |
3296 | nhlfe_del(nhlfe); | |
3297 | ||
3298 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3299 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3300 | } |
3301 | return 0; | |
ce549947 RW |
3302 | } |
3303 | ||
ea6b290b RW |
3304 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3305 | mpls_label_t in_label) | |
3306 | { | |
3307 | struct hash *lsp_table; | |
3308 | zebra_ile_t tmp_ile; | |
3309 | zebra_lsp_t *lsp; | |
3310 | ||
3311 | /* Lookup table. */ | |
3312 | lsp_table = zvrf->lsp_table; | |
3313 | if (!lsp_table) | |
3314 | return -1; | |
3315 | ||
3316 | /* If entry is not present, exit. */ | |
3317 | tmp_ile.in_label = in_label; | |
3318 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3319 | if (!lsp) | |
3320 | return 0; | |
3321 | ||
3322 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3323 | } | |
3324 | ||
ce549947 | 3325 | /* |
651105b5 | 3326 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3327 | * If no other NHLFEs exist, the entry would be deleted. |
3328 | */ | |
651105b5 | 3329 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3330 | { |
651105b5 | 3331 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 3332 | zebra_lsp_t *lsp; |
3333 | struct hash *lsp_table; | |
ce549947 | 3334 | |
e3b78da8 | 3335 | lsp = (zebra_lsp_t *)bucket->data; |
ee70f629 | 3336 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3337 | return; |
ce549947 | 3338 | |
651105b5 | 3339 | lsp_table = args->lsp_table; |
d62a17ae | 3340 | if (!lsp_table) |
3341 | return; | |
ce549947 | 3342 | |
651105b5 | 3343 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3344 | } |
3345 | ||
3346 | /* | |
651105b5 RW |
3347 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3348 | * LSP type. | |
ce549947 | 3349 | */ |
651105b5 RW |
3350 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3351 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3352 | { |
3353 | struct route_table *table; | |
3354 | struct route_node *rn; | |
3355 | struct route_entry *re; | |
3356 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3357 | struct nexthop_group *nhg; |
3358 | bool update; | |
d62a17ae | 3359 | |
3360 | /* Process routes of interested address-families. */ | |
3361 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3362 | if (!table) | |
3363 | return; | |
3364 | ||
3365 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3366 | update = false; |
3367 | ||
a2addae8 | 3368 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3369 | struct nhg_hash_entry *new_nhe; |
da137142 | 3370 | |
f2e7f4eb | 3371 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3372 | |
f2e7f4eb MS |
3373 | nhg = &new_nhe->nhg; |
3374 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3375 | nexthop = nexthop->next) { |
651105b5 | 3376 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3377 | continue; |
3378 | ||
d62a17ae | 3379 | nexthop_del_labels(nexthop); |
3380 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3381 | SET_FLAG(re->status, | |
332ad713 | 3382 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3383 | update = true; |
3384 | } | |
3385 | ||
3386 | /* Check for backup info and update that also */ | |
3387 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3388 | if (nhg != NULL) { | |
3389 | for (nexthop = nhg->nexthop; nexthop; | |
3390 | nexthop = nexthop->next) { | |
3391 | if (nexthop->nh_label_type != lsp_type) | |
3392 | continue; | |
3393 | ||
3394 | nexthop_del_labels(nexthop); | |
3395 | SET_FLAG(re->status, | |
3396 | ROUTE_ENTRY_CHANGED); | |
3397 | SET_FLAG(re->status, | |
3398 | ROUTE_ENTRY_LABELS_CHANGED); | |
3399 | update = true; | |
3400 | } | |
d62a17ae | 3401 | } |
da137142 | 3402 | |
19474c9c | 3403 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3404 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3405 | |
f2e7f4eb | 3406 | zebra_nhg_free(new_nhe); |
407c87a6 | 3407 | } |
d62a17ae | 3408 | |
3409 | if (update) | |
3410 | rib_queue_add(rn); | |
3411 | } | |
ce549947 RW |
3412 | } |
3413 | ||
1c1cf002 | 3414 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3415 | /* |
3416 | * Check that the label values used in LSP creation are consistent. The | |
3417 | * main criteria is that if there is ECMP, the label operation must still | |
3418 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3419 | * to current HW restrictions. | |
3420 | */ | |
d62a17ae | 3421 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3422 | mpls_label_t in_label, | |
3423 | mpls_label_t out_label, | |
3424 | enum nexthop_types_t gtype, | |
3425 | union g_addr *gate, ifindex_t ifindex) | |
3426 | { | |
3427 | struct hash *slsp_table; | |
3428 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3429 | zebra_lsp_t *lsp; |
3430 | zebra_nhlfe_t *nhlfe; | |
3431 | const struct nexthop *nh; | |
d62a17ae | 3432 | |
3433 | /* Lookup table. */ | |
3434 | slsp_table = zvrf->slsp_table; | |
3435 | if (!slsp_table) | |
3436 | return 0; | |
3437 | ||
3438 | /* If entry is not present, exit. */ | |
3439 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3440 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3441 | if (!lsp) | |
d62a17ae | 3442 | return 1; |
3443 | ||
608a57c0 MS |
3444 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3445 | gtype, gate, ifindex); | |
3446 | if (nhlfe) { | |
3447 | nh = nhlfe->nexthop; | |
3448 | ||
3449 | if (nh == NULL || nh->nh_label == NULL) | |
3450 | return 0; | |
3451 | ||
3452 | if (nh->nh_label->label[0] == out_label) | |
d62a17ae | 3453 | return 1; |
3454 | ||
3455 | /* If not only NHLFE, cannot allow label change. */ | |
608a57c0 MS |
3456 | if (nhlfe != nhlfe_list_first(&lsp->nhlfe_list) || |
3457 | nhlfe_list_next(&lsp->nhlfe_list, nhlfe) != NULL) | |
d62a17ae | 3458 | return 0; |
3459 | } else { | |
3460 | /* If other NHLFEs exist, label operation must match. */ | |
608a57c0 MS |
3461 | nhlfe = nhlfe_list_first(&lsp->nhlfe_list); |
3462 | if (nhlfe != NULL) { | |
d62a17ae | 3463 | int cur_op, new_op; |
3464 | ||
608a57c0 MS |
3465 | nh = nhlfe->nexthop; |
3466 | ||
3467 | if (nh == NULL || nh->nh_label == NULL) | |
3468 | return 0; | |
3469 | ||
3470 | cur_op = (nh->nh_label->label[0] == | |
ee70f629 | 3471 | MPLS_LABEL_IMPLICIT_NULL); |
70e98a7f | 3472 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3473 | if (cur_op != new_op) |
3474 | return 0; | |
3475 | } | |
3476 | } | |
3477 | ||
3478 | /* Label values are good. */ | |
3479 | return 1; | |
7758e3f3 | 3480 | } |
1c1cf002 | 3481 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3482 | |
3483 | /* | |
3484 | * Add static LSP entry. This may be the first entry for this incoming label | |
3485 | * or an additional nexthop; an existing entry may also have outgoing label | |
3486 | * changed. | |
3487 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3488 | * NHLFEs). | |
3489 | */ | |
d62a17ae | 3490 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3491 | mpls_label_t out_label, | |
3492 | enum nexthop_types_t gtype, union g_addr *gate, | |
3493 | ifindex_t ifindex) | |
3494 | { | |
3495 | struct hash *slsp_table; | |
3496 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3497 | zebra_lsp_t *lsp; |
3498 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3499 | char buf[BUFSIZ]; |
3500 | ||
3501 | /* Lookup table. */ | |
3502 | slsp_table = zvrf->slsp_table; | |
3503 | if (!slsp_table) | |
3504 | return -1; | |
3505 | ||
e4a1ec74 | 3506 | /* Find or create LSP. */ |
d62a17ae | 3507 | tmp_ile.in_label = in_label; |
608a57c0 MS |
3508 | lsp = hash_get(slsp_table, &tmp_ile, lsp_alloc); |
3509 | if (!lsp) | |
d62a17ae | 3510 | return -1; |
e4a1ec74 | 3511 | |
608a57c0 MS |
3512 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, gtype, gate, |
3513 | ifindex); | |
3514 | if (nhlfe) { | |
3515 | struct nexthop *nh = nhlfe->nexthop; | |
3516 | ||
3517 | assert(nh); | |
3518 | assert(nh->nh_label); | |
3519 | ||
3520 | /* Compare existing nexthop */ | |
3521 | if (nh->nh_label->num_labels == 1 && | |
3522 | nh->nh_label->label[0] == out_label) | |
d62a17ae | 3523 | /* No change */ |
3524 | return 0; | |
3525 | ||
3526 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3527 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3528 | zlog_debug( |
3efd0893 | 3529 | "Upd static LSP in-label %u nexthop %s out-label %u (old %u)", |
608a57c0 MS |
3530 | in_label, buf, out_label, |
3531 | nh->nh_label->label[0]); | |
3532 | } | |
3533 | if (nh->nh_label->num_labels == 1) | |
3534 | nh->nh_label->label[0] = out_label; | |
3535 | else { | |
3536 | nexthop_del_labels(nh); | |
3537 | nexthop_add_labels(nh, ZEBRA_LSP_STATIC, 1, &out_label); | |
d62a17ae | 3538 | } |
608a57c0 | 3539 | |
d62a17ae | 3540 | } else { |
3541 | /* Add static LSP entry to this nexthop */ | |
608a57c0 MS |
3542 | nhlfe = nhlfe_add(lsp, ZEBRA_LSP_STATIC, gtype, gate, |
3543 | ifindex, 1, &out_label, false /*backup*/); | |
3544 | if (!nhlfe) | |
d62a17ae | 3545 | return -1; |
3546 | ||
3547 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3548 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3549 | zlog_debug( |
3550 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3551 | in_label, buf, out_label); | |
3552 | } | |
3553 | } | |
3554 | ||
3555 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3556 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3557 | gtype, gate, ifindex)) | |
d62a17ae | 3558 | return -1; |
3559 | ||
3560 | return 0; | |
7758e3f3 | 3561 | } |
3562 | ||
3563 | /* | |
3564 | * Delete static LSP entry. This may be the delete of one particular | |
3565 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3566 | * all NHLFEs). | |
3567 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3568 | * LSP configuration. | |
3569 | */ | |
d62a17ae | 3570 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3571 | enum nexthop_types_t gtype, union g_addr *gate, | |
3572 | ifindex_t ifindex) | |
3573 | { | |
3574 | struct hash *slsp_table; | |
3575 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3576 | zebra_lsp_t *lsp; |
3577 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3578 | |
3579 | /* Lookup table. */ | |
3580 | slsp_table = zvrf->slsp_table; | |
3581 | if (!slsp_table) | |
3582 | return -1; | |
3583 | ||
3584 | /* If entry is not present, exit. */ | |
3585 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3586 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3587 | if (!lsp) | |
d62a17ae | 3588 | return 0; |
3589 | ||
3590 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3591 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3592 | if (IS_ZEBRA_DEBUG_MPLS) | |
3593 | zlog_debug("Del static LSP in-label %u", in_label); | |
3594 | ||
3595 | /* Uninstall entire LSP from the main table. */ | |
3596 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3597 | ||
3598 | /* Delete all static NHLFEs */ | |
608a57c0 MS |
3599 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3600 | nhlfe_del(nhlfe); | |
3601 | } | |
d62a17ae | 3602 | } else { |
3603 | /* Find specific NHLFE, exit if not found. */ | |
608a57c0 MS |
3604 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3605 | gtype, gate, ifindex); | |
3606 | if (!nhlfe) | |
d62a17ae | 3607 | return 0; |
3608 | ||
3609 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3610 | char buf[BUFSIZ]; | |
608a57c0 | 3611 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3612 | zlog_debug("Del static LSP in-label %u nexthop %s", |
3613 | in_label, buf); | |
3614 | } | |
3615 | ||
3616 | /* Uninstall LSP from the main table. */ | |
3617 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
cc1b9746 | 3618 | gate, ifindex, false); |
d62a17ae | 3619 | |
3620 | /* Delete static LSP NHLFE */ | |
608a57c0 | 3621 | nhlfe_del(nhlfe); |
d62a17ae | 3622 | } |
3623 | ||
3624 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
608a57c0 MS |
3625 | * above. |
3626 | */ | |
3627 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) { | |
3628 | lsp = hash_release(slsp_table, &tmp_ile); | |
3629 | XFREE(MTYPE_LSP, lsp); | |
d62a17ae | 3630 | } |
3631 | ||
3632 | return 0; | |
7758e3f3 | 3633 | } |
3634 | ||
40c7bdb0 | 3635 | /* |
3636 | * Schedule all MPLS label forwarding entries for processing. | |
3637 | * Called upon changes that may affect one or more of them such as | |
3638 | * interface or nexthop state changes. | |
3639 | */ | |
d62a17ae | 3640 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3641 | { |
d62a17ae | 3642 | if (!zvrf) |
3643 | return; | |
3644 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3645 | } |
3646 | ||
3ab18ff2 | 3647 | /* |
3648 | * Display MPLS label forwarding table for a specific LSP | |
3649 | * (VTY command handler). | |
3650 | */ | |
d62a17ae | 3651 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3652 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3653 | { |
d62a17ae | 3654 | struct hash *lsp_table; |
3655 | zebra_lsp_t *lsp; | |
3656 | zebra_ile_t tmp_ile; | |
3657 | json_object *json = NULL; | |
3ab18ff2 | 3658 | |
d62a17ae | 3659 | /* Lookup table. */ |
3660 | lsp_table = zvrf->lsp_table; | |
3661 | if (!lsp_table) | |
3662 | return; | |
3ab18ff2 | 3663 | |
d62a17ae | 3664 | /* If entry is not present, exit. */ |
3665 | tmp_ile.in_label = label; | |
3666 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3667 | if (!lsp) | |
3668 | return; | |
3ab18ff2 | 3669 | |
d62a17ae | 3670 | if (use_json) { |
3671 | json = lsp_json(lsp); | |
9d303b37 DL |
3672 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3673 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3674 | json_object_free(json); |
3675 | } else | |
a29c2887 | 3676 | lsp_print(vty, lsp); |
3ab18ff2 | 3677 | } |
3678 | ||
3679 | /* | |
3680 | * Display MPLS label forwarding table (VTY command handler). | |
3681 | */ | |
d62a17ae | 3682 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3683 | bool use_json) |
d62a17ae | 3684 | { |
3685 | char buf[BUFSIZ]; | |
3686 | json_object *json = NULL; | |
3687 | zebra_lsp_t *lsp = NULL; | |
3688 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3689 | struct listnode *node = NULL; |
3690 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3691 | ||
3692 | if (use_json) { | |
3693 | json = json_object_new_object(); | |
3694 | ||
3695 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3696 | json_object_object_add( | |
43a9f66c MS |
3697 | json, label2str(lsp->ile.in_label, buf, |
3698 | sizeof(buf)), | |
d62a17ae | 3699 | lsp_json(lsp)); |
3700 | ||
9d303b37 DL |
3701 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3702 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3703 | json_object_free(json); |
3704 | } else { | |
a971aeb6 RW |
3705 | struct ttable *tt; |
3706 | ||
3707 | /* Prepare table. */ | |
3708 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3709 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3710 | tt->style.cell.rpad = 2; | |
3711 | tt->style.corner = '+'; | |
3712 | ttable_restyle(tt); | |
3713 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3714 | |
3715 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3716 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3717 | struct nexthop *nexthop; |
3718 | const char *out_label_str; | |
3719 | char nh_buf[NEXTHOP_STRLEN]; | |
3720 | ||
d62a17ae | 3721 | nexthop = nhlfe->nexthop; |
3722 | ||
3723 | switch (nexthop->type) { | |
996c9314 | 3724 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3725 | struct zebra_ns *zns; |
b9abd9ad DS |
3726 | struct interface *ifp; |
3727 | ||
86f07f44 PG |
3728 | zns = zebra_ns_lookup(NS_DEFAULT); |
3729 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3730 | zns, nexthop->ifindex); |
3731 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3732 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3733 | break; |
3734 | } | |
d62a17ae | 3735 | case NEXTHOP_TYPE_IPV4: |
3736 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3737 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3738 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3739 | break; |
3740 | case NEXTHOP_TYPE_IPV6: | |
3741 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3742 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3743 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3744 | break; |
3745 | default: | |
3746 | break; | |
3747 | } | |
3748 | ||
b9abd9ad | 3749 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3750 | out_label_str = mpls_label2str( |
3751 | nexthop->nh_label->num_labels, | |
3752 | &nexthop->nh_label->label[0], | |
43a9f66c | 3753 | buf, sizeof(buf), 1); |
b9abd9ad | 3754 | else |
a971aeb6 RW |
3755 | out_label_str = "-"; |
3756 | ||
3757 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3758 | lsp->ile.in_label, | |
3759 | nhlfe_type2str(nhlfe->type), | |
3760 | nh_buf, out_label_str); | |
d62a17ae | 3761 | } |
3762 | } | |
3763 | ||
a971aeb6 RW |
3764 | /* Dump the generated table. */ |
3765 | if (tt->nrows > 1) { | |
3766 | char *table = ttable_dump(tt, "\n"); | |
3767 | vty_out(vty, "%s\n", table); | |
3768 | XFREE(MTYPE_TMP, table); | |
3769 | } | |
3770 | ttable_del(tt); | |
d62a17ae | 3771 | } |
3772 | ||
6a154c88 | 3773 | list_delete(&lsp_list); |
3ab18ff2 | 3774 | } |
3775 | ||
608a57c0 MS |
3776 | /* |
3777 | * Create printable string for static LSP configuration. | |
3778 | */ | |
3779 | static char *nhlfe_config_str(const zebra_nhlfe_t *nhlfe, char *buf, int size) | |
3780 | { | |
3781 | const struct nexthop *nh; | |
3782 | ||
3783 | nh = nhlfe->nexthop; | |
3784 | ||
3785 | buf[0] = '\0'; | |
3786 | switch (nh->type) { | |
3787 | case NEXTHOP_TYPE_IPV4: | |
3788 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, size); | |
3789 | break; | |
3790 | case NEXTHOP_TYPE_IPV6: | |
3791 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3792 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, size); | |
3793 | if (nh->ifindex) | |
3794 | strlcat(buf, | |
3795 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3796 | size); | |
3797 | break; | |
3798 | default: | |
3799 | break; | |
3800 | } | |
3801 | ||
3802 | return buf; | |
3803 | } | |
3804 | ||
7758e3f3 | 3805 | /* |
3806 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3807 | */ | |
d62a17ae | 3808 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3809 | { | |
608a57c0 MS |
3810 | zebra_lsp_t *lsp; |
3811 | zebra_nhlfe_t *nhlfe; | |
3812 | struct nexthop *nh; | |
d62a17ae | 3813 | struct listnode *node; |
3814 | struct list *slsp_list = | |
608a57c0 | 3815 | hash_get_sorted_list(zvrf->slsp_table, lsp_cmp); |
d62a17ae | 3816 | |
608a57c0 MS |
3817 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, lsp)) { |
3818 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
0af35d90 | 3819 | char buf[BUFSIZ]; |
d62a17ae | 3820 | char lstr[30]; |
3821 | ||
608a57c0 MS |
3822 | nh = nhlfe->nexthop; |
3823 | if (nh == NULL || nh->nh_label == NULL) | |
3824 | continue; | |
3825 | ||
3826 | nhlfe_config_str(nhlfe, buf, sizeof(buf)); | |
3827 | ||
3828 | switch (nh->nh_label->label[0]) { | |
70e98a7f DS |
3829 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3830 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3831 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3832 | break; | |
70e98a7f | 3833 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3834 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3835 | break; | |
3836 | default: | |
772270f3 | 3837 | snprintf(lstr, sizeof(lstr), "%u", |
608a57c0 | 3838 | nh->nh_label->label[0]); |
d62a17ae | 3839 | break; |
3840 | } | |
3841 | ||
608a57c0 | 3842 | vty_out(vty, "mpls lsp %u %s %s\n", lsp->ile.in_label, |
d62a17ae | 3843 | buf, lstr); |
3844 | } | |
3845 | } | |
b78b820d | 3846 | |
6a154c88 | 3847 | list_delete(&slsp_list); |
d62a17ae | 3848 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3849 | } |
3850 | ||
1b6d5c7e VV |
3851 | /* |
3852 | * Add/update global label block. | |
3853 | */ | |
d7c0a89a QY |
3854 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3855 | uint32_t end_label) | |
1b6d5c7e | 3856 | { |
d62a17ae | 3857 | zvrf->mpls_srgb.start_label = start_label; |
3858 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3859 | |
d62a17ae | 3860 | /* Evaluate registered FECs to see if any get a label or not. */ |
3861 | fec_evaluate(zvrf); | |
3862 | return 0; | |
1b6d5c7e VV |
3863 | } |
3864 | ||
3865 | /* | |
3866 | * Delete global label block. | |
3867 | */ | |
d62a17ae | 3868 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3869 | { |
d62a17ae | 3870 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3871 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3872 | |
d62a17ae | 3873 | /* Process registered FECs to clear their local label, if needed. */ |
3874 | fec_evaluate(zvrf); | |
3875 | return 0; | |
1b6d5c7e VV |
3876 | } |
3877 | ||
3878 | /* | |
3879 | * Display MPLS global label block configuration (VTY command handler). | |
3880 | */ | |
d62a17ae | 3881 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3882 | { |
d62a17ae | 3883 | if (zvrf->mpls_srgb.start_label == 0) |
3884 | return 0; | |
1b6d5c7e | 3885 | |
d62a17ae | 3886 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3887 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3888 | vty_out(vty, "mpls label global-block %u %u\n", | |
3889 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3890 | } | |
1b6d5c7e | 3891 | |
d62a17ae | 3892 | return 1; |
1b6d5c7e VV |
3893 | } |
3894 | ||
84915b0a | 3895 | /* |
3896 | * Called when VRF becomes inactive, cleans up information but keeps | |
3897 | * the table itself. | |
84915b0a | 3898 | */ |
3899 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3900 | { | |
c2e10644 MS |
3901 | struct zebra_vrf *def_zvrf; |
3902 | afi_t afi; | |
3903 | ||
3904 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3905 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3906 | else { | |
3907 | /* | |
3908 | * For other vrfs, we try to remove associated LSPs; we locate | |
3909 | * the LSPs in the default vrf. | |
3910 | */ | |
3911 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3912 | ||
3913 | /* At shutdown, the default may be gone already */ | |
3914 | if (def_zvrf == NULL) | |
3915 | return; | |
3916 | ||
3917 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3918 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3919 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3920 | } | |
3921 | } | |
84915b0a | 3922 | } |
3923 | ||
40c7bdb0 | 3924 | /* |
3925 | * Called upon process exiting, need to delete LSP forwarding | |
3926 | * entries from the kernel. | |
3927 | * NOTE: Currently supported only for default VRF. | |
3928 | */ | |
d62a17ae | 3929 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3930 | { |
d62a17ae | 3931 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3932 | hash_clean(zvrf->lsp_table, NULL); | |
3933 | hash_free(zvrf->lsp_table); | |
3934 | hash_clean(zvrf->slsp_table, NULL); | |
3935 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3936 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3937 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3938 | } |
3939 | ||
7758e3f3 | 3940 | /* |
3941 | * Allocate MPLS tables for this VRF and do other initialization. | |
3942 | * NOTE: Currently supported only for default VRF. | |
3943 | */ | |
d62a17ae | 3944 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3945 | { |
d62a17ae | 3946 | if (!zvrf) |
3947 | return; | |
996c9314 LB |
3948 | zvrf->slsp_table = |
3949 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3950 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3951 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3952 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3953 | zvrf->mpls_flags = 0; | |
3954 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3955 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3956 | } |
3957 | ||
3958 | /* | |
3959 | * Global MPLS initialization. | |
3960 | */ | |
d62a17ae | 3961 | void zebra_mpls_init(void) |
7758e3f3 | 3962 | { |
d62a17ae | 3963 | mpls_enabled = 0; |
33c32282 | 3964 | |
d62a17ae | 3965 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3966 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3967 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3968 | return; |
3969 | } | |
fe6c7157 | 3970 | |
2561d12e | 3971 | if (!mpls_processq_init()) |
d62a17ae | 3972 | mpls_enabled = 1; |
453844ab | 3973 | |
21ccc0cf | 3974 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 3975 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 3976 | } |