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7758e3f3 | 1 | /* Zebra MPLS code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7758e3f3 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
7758e3f3 | 26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
a971aeb6 | 37 | #include "termtable.h" |
b78b820d | 38 | #include "lib/json.h" |
7758e3f3 | 39 | |
40 | #include "zebra/rib.h" | |
41 | #include "zebra/rt.h" | |
86f07f44 | 42 | #include "zebra/interface.h" |
7758e3f3 | 43 | #include "zebra/zserv.h" |
3801e764 | 44 | #include "zebra/zebra_router.h" |
7758e3f3 | 45 | #include "zebra/redistribute.h" |
46 | #include "zebra/debug.h" | |
7758e3f3 | 47 | #include "zebra/zebra_vrf.h" |
48 | #include "zebra/zebra_mpls.h" | |
31f937fb | 49 | #include "zebra/zebra_srte.h" |
43e52561 | 50 | #include "zebra/zebra_errors.h" |
7758e3f3 | 51 | |
bf8d3d6a DL |
52 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object"); |
53 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object"); | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object"); | |
7758e3f3 | 55 | |
fe6c7157 RW |
56 | int mpls_enabled; |
57 | ||
7758e3f3 | 58 | /* static function declarations */ |
f31e084c | 59 | |
d62a17ae | 60 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
61 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
62 | zebra_fec_t *fec); | |
d62a17ae | 63 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
64 | struct route_node *rn, struct route_entry *re); | |
65 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
66 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
67 | mpls_label_t old_label); | |
68 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
69 | static void fec_update_clients(zebra_fec_t *fec); | |
70 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
71 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
72 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
73 | mpls_label_t label, uint32_t flags, |
74 | uint32_t label_index); | |
d62a17ae | 75 | static int fec_del(zebra_fec_t *fec); |
76 | ||
d8b87afe | 77 | static unsigned int label_hash(const void *p); |
74df8d6d | 78 | static bool label_cmp(const void *p1, const void *p2); |
d62a17ae | 79 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
80 | struct nexthop *nexthop); | |
81 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
82 | struct nexthop *nexthop); | |
83 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
84 | ||
85 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp); | |
e3b78da8 TB |
86 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt); |
87 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt); | |
d62a17ae | 88 | static wq_item_status lsp_process(struct work_queue *wq, void *data); |
89 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
90 | static void lsp_processq_complete(struct work_queue *wq); | |
91 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
92 | static void *lsp_alloc(void *p); | |
1323491d MS |
93 | |
94 | /* Check whether lsp can be freed - no nhlfes, e.g., and call free api */ | |
95 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
96 | ||
ebab422a MS |
97 | /* Free lsp; sets caller's pointer to NULL */ |
98 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
d62a17ae | 99 | |
608a57c0 MS |
100 | static char *nhlfe2str(const zebra_nhlfe_t *nhlfe, char *buf, int size); |
101 | static char *nhlfe_config_str(const zebra_nhlfe_t *nhlfe, char *buf, int size); | |
d62a17ae | 102 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 103 | const union g_addr *gate, ifindex_t ifindex); |
ee70f629 MS |
104 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
105 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
106 | enum nexthop_types_t gtype, |
107 | const union g_addr *gate, ifindex_t ifindex); | |
d62a17ae | 108 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
109 | enum nexthop_types_t gtype, |
110 | const union g_addr *gate, ifindex_t ifindex, | |
cc1b9746 MS |
111 | uint8_t num_labels, const mpls_label_t *labels, |
112 | bool is_backup); | |
cd4bb96f MS |
113 | static int nhlfe_del(zebra_nhlfe_t *nhlfe); |
114 | static void nhlfe_free(zebra_nhlfe_t *nhlfe); | |
d62a17ae | 115 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 116 | struct mpls_label_stack *nh_label); |
d62a17ae | 117 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
118 | enum lsp_types_t type); | |
119 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
120 | mpls_label_t in_label); | |
3c0e1622 MS |
121 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty, |
122 | const char *indent); | |
a29c2887 | 123 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp); |
651105b5 RW |
124 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
125 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
126 | int afi, enum lsp_types_t lsp_type); | |
f2e7f4eb MS |
127 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
128 | const struct zapi_nexthop *znh); | |
129 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, | |
130 | const struct zapi_nexthop *znh); | |
7758e3f3 | 131 | |
7758e3f3 | 132 | /* Static functions */ |
133 | ||
3d468f66 DS |
134 | /* |
135 | * Handle failure in LSP install, clear flags for NHLFE. | |
136 | */ | |
137 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
138 | { | |
139 | zebra_nhlfe_t *nhlfe; | |
140 | struct nexthop *nexthop; | |
141 | ||
ee70f629 | 142 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3d468f66 DS |
143 | nexthop = nhlfe->nexthop; |
144 | if (!nexthop) | |
145 | continue; | |
146 | ||
147 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
148 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
149 | } | |
68110c42 MS |
150 | |
151 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
152 | nexthop = nhlfe->nexthop; | |
153 | if (!nexthop) | |
154 | continue; | |
155 | ||
156 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
157 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
158 | } | |
3d468f66 DS |
159 | } |
160 | ||
a64448ba DS |
161 | /* |
162 | * Install label forwarding entry based on labeled-route entry. | |
163 | */ | |
d62a17ae | 164 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
165 | struct route_node *rn, struct route_entry *re) | |
166 | { | |
167 | struct hash *lsp_table; | |
168 | zebra_ile_t tmp_ile; | |
169 | zebra_lsp_t *lsp; | |
170 | zebra_nhlfe_t *nhlfe; | |
171 | struct nexthop *nexthop; | |
172 | enum lsp_types_t lsp_type; | |
173 | char buf[BUFSIZ]; | |
174 | int added, changed; | |
175 | ||
176 | /* Lookup table. */ | |
177 | lsp_table = zvrf->lsp_table; | |
178 | if (!lsp_table) | |
179 | return -1; | |
180 | ||
181 | lsp_type = lsp_type_from_re_type(re->type); | |
182 | added = changed = 0; | |
183 | ||
184 | /* Locate or allocate LSP entry. */ | |
185 | tmp_ile.in_label = label; | |
186 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
187 | if (!lsp) | |
188 | return -1; | |
189 | ||
190 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
191 | * recursive nexthops right now, because intermediate hops won't | |
192 | * understand | |
193 | * the label advertised by the recursive nexthop (plus we don't have the | |
194 | * logic yet to push multiple labels). | |
195 | */ | |
c415d895 | 196 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 197 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 198 | /* Skip inactive and recursive entries. */ |
199 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
200 | continue; | |
201 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
202 | continue; | |
203 | ||
ee70f629 MS |
204 | nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type, |
205 | nexthop->type, &nexthop->gate, | |
d62a17ae | 206 | nexthop->ifindex); |
207 | if (nhlfe) { | |
208 | /* Clear deleted flag (in case it was set) */ | |
209 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
210 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
211 | /* No change */ | |
212 | continue; | |
213 | ||
214 | ||
215 | if (IS_ZEBRA_DEBUG_MPLS) { | |
216 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
217 | zlog_debug( | |
3efd0893 | 218 | "LSP in-label %u type %d nexthop %s out-label changed", |
d62a17ae | 219 | lsp->ile.in_label, lsp_type, buf); |
220 | } | |
221 | ||
222 | /* Update out label, trigger processing. */ | |
223 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
224 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
225 | changed++; | |
226 | } else { | |
227 | /* Add LSP entry to this nexthop */ | |
228 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
229 | &nexthop->gate, nexthop->ifindex, | |
5065db0a | 230 | nexthop->nh_label->num_labels, |
cc1b9746 MS |
231 | nexthop->nh_label->label, |
232 | false /*backup*/); | |
d62a17ae | 233 | if (!nhlfe) |
234 | return -1; | |
235 | ||
236 | if (IS_ZEBRA_DEBUG_MPLS) { | |
237 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
238 | zlog_debug( | |
3efd0893 | 239 | "Add LSP in-label %u type %d nexthop %s out-label %u", |
d62a17ae | 240 | lsp->ile.in_label, lsp_type, buf, |
241 | nexthop->nh_label->label[0]); | |
242 | } | |
243 | ||
244 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
245 | ||
246 | /* Mark NHLFE as changed. */ | |
247 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
248 | added++; | |
249 | } | |
250 | } | |
251 | ||
252 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
253 | * case), delete the LSP entry; this case results in somewhat ugly | |
254 | * logging. | |
255 | */ | |
256 | if (added || changed) { | |
257 | if (lsp_processq_add(lsp)) | |
258 | return -1; | |
1323491d MS |
259 | } else { |
260 | lsp_check_free(lsp_table, &lsp); | |
261 | } | |
d62a17ae | 262 | |
263 | return 0; | |
a64448ba DS |
264 | } |
265 | ||
266 | /* | |
267 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
268 | * NHLFEs are removed, the entire entry is deleted. | |
269 | */ | |
d62a17ae | 270 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
271 | { | |
272 | struct hash *lsp_table; | |
273 | zebra_ile_t tmp_ile; | |
274 | zebra_lsp_t *lsp; | |
ee70f629 | 275 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 276 | char buf[BUFSIZ]; |
277 | ||
278 | /* Lookup table. */ | |
279 | lsp_table = zvrf->lsp_table; | |
280 | if (!lsp_table) | |
281 | return -1; | |
282 | ||
283 | /* If entry is not present, exit. */ | |
284 | tmp_ile.in_label = label; | |
285 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 286 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 287 | return 0; |
288 | ||
289 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 290 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 291 | |
292 | /* Skip static NHLFEs */ | |
293 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
294 | continue; | |
295 | ||
296 | if (IS_ZEBRA_DEBUG_MPLS) { | |
297 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
298 | zlog_debug( | |
299 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
300 | label, nhlfe->type, buf, nhlfe->flags); | |
301 | } | |
302 | ||
303 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
304 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
305 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
306 | } else { | |
307 | nhlfe_del(nhlfe); | |
308 | } | |
309 | } | |
310 | ||
311 | /* Queue LSP for processing, if needed, else delete. */ | |
312 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
313 | if (lsp_processq_add(lsp)) | |
314 | return -1; | |
1323491d MS |
315 | } else { |
316 | lsp_check_free(lsp_table, &lsp); | |
317 | } | |
d62a17ae | 318 | |
319 | return 0; | |
a64448ba DS |
320 | } |
321 | ||
28d58fd7 VV |
322 | /* |
323 | * This function is invoked upon change to label block configuration; it | |
324 | * will walk all registered FECs with label-index and appropriately update | |
325 | * their local labels and trigger client updates. | |
326 | */ | |
d62a17ae | 327 | static void fec_evaluate(struct zebra_vrf *zvrf) |
328 | { | |
329 | struct route_node *rn; | |
330 | zebra_fec_t *fec; | |
d7c0a89a | 331 | uint32_t old_label, new_label; |
d62a17ae | 332 | int af; |
d62a17ae | 333 | |
334 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
335 | if (zvrf->fec_table[af] == NULL) | |
336 | continue; | |
337 | ||
338 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
339 | rn = route_next(rn)) { | |
340 | if ((fec = rn->info) == NULL) | |
341 | continue; | |
342 | ||
343 | /* Skip configured FECs and those without a label index. | |
344 | */ | |
345 | if (fec->flags & FEC_FLAG_CONFIGURED | |
346 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
347 | continue; | |
348 | ||
d62a17ae | 349 | /* Save old label, determine new label. */ |
350 | old_label = fec->label; | |
351 | new_label = | |
352 | zvrf->mpls_srgb.start_label + fec->label_index; | |
353 | if (new_label >= zvrf->mpls_srgb.end_label) | |
354 | new_label = MPLS_INVALID_LABEL; | |
355 | ||
356 | /* If label has changed, update FEC and clients. */ | |
357 | if (new_label == old_label) | |
358 | continue; | |
359 | ||
360 | if (IS_ZEBRA_DEBUG_MPLS) | |
361 | zlog_debug( | |
b467b4b4 DS |
362 | "Update fec %pRN new label %u upon label block", |
363 | rn, new_label); | |
d62a17ae | 364 | |
365 | fec->label = new_label; | |
366 | fec_update_clients(fec); | |
367 | ||
368 | /* Update label forwarding entries appropriately */ | |
369 | fec_change_update_lsp(zvrf, fec, old_label); | |
370 | } | |
371 | } | |
28d58fd7 VV |
372 | } |
373 | ||
374 | /* | |
375 | * Derive (if possible) and update the local label for the FEC based on | |
376 | * its label index. The index is "acceptable" if it falls within the | |
377 | * globally configured label block (SRGB). | |
378 | */ | |
d7c0a89a QY |
379 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
380 | zebra_fec_t *fec) | |
28d58fd7 | 381 | { |
d7c0a89a | 382 | uint32_t label; |
28d58fd7 | 383 | |
d62a17ae | 384 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
385 | && zvrf->mpls_srgb.start_label | |
386 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
387 | < zvrf->mpls_srgb.end_label)) | |
388 | fec->label = label; | |
389 | else | |
390 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 391 | |
d62a17ae | 392 | return fec->label; |
28d58fd7 VV |
393 | } |
394 | ||
a64448ba DS |
395 | /* |
396 | * There is a change for this FEC. Install or uninstall label forwarding | |
397 | * entries, as appropriate. | |
398 | */ | |
d62a17ae | 399 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
400 | mpls_label_t old_label) | |
a64448ba | 401 | { |
d62a17ae | 402 | struct route_table *table; |
403 | struct route_node *rn; | |
404 | struct route_entry *re; | |
405 | afi_t afi; | |
a64448ba | 406 | |
d62a17ae | 407 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
408 | if (old_label != MPLS_INVALID_LABEL |
409 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 410 | lsp_uninstall(zvrf, old_label); |
a64448ba | 411 | |
d62a17ae | 412 | /* Install label forwarding entry corr. to new label, if needed. */ |
413 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 414 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 415 | return 0; |
a64448ba | 416 | |
d62a17ae | 417 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
418 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
419 | if (!table) | |
420 | return 0; | |
a64448ba | 421 | |
d62a17ae | 422 | /* See if labeled route exists. */ |
423 | rn = route_node_lookup(table, &fec->rn->p); | |
424 | if (!rn) | |
425 | return 0; | |
a64448ba | 426 | |
a2addae8 | 427 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 428 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
429 | break; | |
430 | } | |
a64448ba | 431 | |
d62a17ae | 432 | if (!re || !zebra_rib_labeled_unicast(re)) |
433 | return 0; | |
a64448ba | 434 | |
d62a17ae | 435 | if (lsp_install(zvrf, fec->label, rn, re)) |
436 | return -1; | |
a64448ba | 437 | |
d62a17ae | 438 | return 0; |
a64448ba DS |
439 | } |
440 | ||
5aba114a DS |
441 | /* |
442 | * Inform about FEC to a registered client. | |
443 | */ | |
d62a17ae | 444 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 445 | { |
d62a17ae | 446 | struct stream *s; |
447 | struct route_node *rn; | |
5aba114a | 448 | |
d62a17ae | 449 | rn = fec->rn; |
5aba114a | 450 | |
d62a17ae | 451 | /* Get output stream. */ |
1002497a | 452 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 453 | |
7cf15b25 | 454 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 455 | |
d62a17ae | 456 | stream_putw(s, rn->p.family); |
457 | stream_put_prefix(s, &rn->p); | |
458 | stream_putl(s, fec->label); | |
459 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 460 | return zserv_send_message(client, s); |
5aba114a DS |
461 | } |
462 | ||
463 | /* | |
464 | * Update all registered clients about this FEC. Caller should've updated | |
465 | * FEC and ensure no duplicate updates. | |
466 | */ | |
d62a17ae | 467 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 468 | { |
d62a17ae | 469 | struct listnode *node; |
470 | struct zserv *client; | |
5aba114a | 471 | |
d62a17ae | 472 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
473 | if (IS_ZEBRA_DEBUG_MPLS) | |
474 | zlog_debug("Update client %s", | |
475 | zebra_route_string(client->proto)); | |
476 | fec_send(fec, client); | |
477 | } | |
5aba114a DS |
478 | } |
479 | ||
480 | ||
f31e084c DS |
481 | /* |
482 | * Print a FEC-label binding entry. | |
483 | */ | |
d62a17ae | 484 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
485 | { | |
486 | struct route_node *rn; | |
487 | struct listnode *node; | |
488 | struct zserv *client; | |
489 | char buf[BUFSIZ]; | |
490 | ||
491 | rn = fec->rn; | |
b467b4b4 | 492 | vty_out(vty, "%pRN\n", rn); |
d62a17ae | 493 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); |
494 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
495 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
496 | vty_out(vty, "\n"); | |
497 | if (!list_isempty(fec->client_list)) { | |
498 | vty_out(vty, " Client list:"); | |
499 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
500 | vty_out(vty, " %s(fd %d)", | |
501 | zebra_route_string(client->proto), | |
502 | client->sock); | |
503 | vty_out(vty, "\n"); | |
504 | } | |
f31e084c DS |
505 | } |
506 | ||
507 | /* | |
508 | * Locate FEC-label binding that matches with passed info. | |
509 | */ | |
d62a17ae | 510 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 511 | { |
d62a17ae | 512 | struct route_node *rn; |
f31e084c | 513 | |
d62a17ae | 514 | apply_mask(p); |
515 | rn = route_node_lookup(table, p); | |
516 | if (!rn) | |
517 | return NULL; | |
f31e084c | 518 | |
d62a17ae | 519 | route_unlock_node(rn); |
520 | return (rn->info); | |
f31e084c DS |
521 | } |
522 | ||
523 | /* | |
5aba114a DS |
524 | * Add a FEC. This may be upon a client registering for a binding |
525 | * or when a binding is configured. | |
f31e084c | 526 | */ |
d62a17ae | 527 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
528 | mpls_label_t label, uint32_t flags, |
529 | uint32_t label_index) | |
f31e084c | 530 | { |
d62a17ae | 531 | struct route_node *rn; |
532 | zebra_fec_t *fec; | |
f31e084c | 533 | |
d62a17ae | 534 | apply_mask(p); |
f31e084c | 535 | |
d62a17ae | 536 | /* Lookup (or add) route node.*/ |
537 | rn = route_node_get(table, p); | |
538 | if (!rn) | |
539 | return NULL; | |
f31e084c | 540 | |
d62a17ae | 541 | fec = rn->info; |
f31e084c | 542 | |
d62a17ae | 543 | if (!fec) { |
544 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 545 | |
d62a17ae | 546 | rn->info = fec; |
547 | fec->rn = rn; | |
548 | fec->label = label; | |
549 | fec->client_list = list_new(); | |
550 | } else | |
551 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 552 | |
d62a17ae | 553 | fec->label_index = label_index; |
554 | fec->flags = flags; | |
f31e084c | 555 | |
d62a17ae | 556 | return fec; |
f31e084c DS |
557 | } |
558 | ||
559 | /* | |
5aba114a DS |
560 | * Delete a FEC. This may be upon the last client deregistering for |
561 | * a FEC and no binding exists or when the binding is deleted and there | |
562 | * are no registered clients. | |
f31e084c | 563 | */ |
d62a17ae | 564 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 565 | { |
6a154c88 | 566 | list_delete(&fec->client_list); |
d62a17ae | 567 | fec->rn->info = NULL; |
568 | route_unlock_node(fec->rn); | |
569 | XFREE(MTYPE_FEC, fec); | |
570 | return 0; | |
f31e084c DS |
571 | } |
572 | ||
7758e3f3 | 573 | /* |
574 | * Hash function for label. | |
575 | */ | |
d8b87afe | 576 | static unsigned int label_hash(const void *p) |
7758e3f3 | 577 | { |
d62a17ae | 578 | const zebra_ile_t *ile = p; |
7758e3f3 | 579 | |
d62a17ae | 580 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 581 | } |
582 | ||
583 | /* | |
584 | * Compare 2 LSP hash entries based on in-label. | |
585 | */ | |
74df8d6d | 586 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 587 | { |
d62a17ae | 588 | const zebra_ile_t *ile1 = p1; |
589 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 590 | |
d62a17ae | 591 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 592 | } |
593 | ||
40c7bdb0 | 594 | /* |
595 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
596 | * the passed flag. | |
597 | * NOTE: Looking only for connected routes right now. | |
598 | */ | |
d62a17ae | 599 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
600 | struct nexthop *nexthop) | |
40c7bdb0 | 601 | { |
d62a17ae | 602 | struct route_table *table; |
603 | struct prefix_ipv4 p; | |
604 | struct route_node *rn; | |
605 | struct route_entry *match; | |
606 | struct nexthop *match_nh; | |
40c7bdb0 | 607 | |
4a7371e9 | 608 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 609 | if (!table) |
610 | return 0; | |
40c7bdb0 | 611 | |
d62a17ae | 612 | /* Lookup nexthop in IPv4 routing table. */ |
613 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
614 | p.family = AF_INET; | |
615 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
616 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 617 | |
d62a17ae | 618 | rn = route_node_match(table, (struct prefix *)&p); |
619 | if (!rn) | |
620 | return 0; | |
40c7bdb0 | 621 | |
d62a17ae | 622 | route_unlock_node(rn); |
88d88a9c | 623 | |
d62a17ae | 624 | /* Locate a valid connected route. */ |
a2addae8 | 625 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 626 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
627 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
628 | continue; | |
629 | ||
c415d895 | 630 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 631 | match_nh = match_nh->next) { |
632 | if (match->type == ZEBRA_ROUTE_CONNECT | |
633 | || nexthop->ifindex == match_nh->ifindex) { | |
634 | nexthop->ifindex = match_nh->ifindex; | |
635 | return 1; | |
636 | } | |
637 | } | |
88d88a9c | 638 | } |
40c7bdb0 | 639 | |
d62a17ae | 640 | return 0; |
40c7bdb0 | 641 | } |
642 | ||
643 | ||
644 | /* | |
645 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
646 | * the passed flag. | |
647 | * NOTE: Looking only for connected routes right now. | |
648 | */ | |
d62a17ae | 649 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
650 | struct nexthop *nexthop) | |
40c7bdb0 | 651 | { |
d62a17ae | 652 | struct route_table *table; |
653 | struct prefix_ipv6 p; | |
654 | struct route_node *rn; | |
655 | struct route_entry *match; | |
40c7bdb0 | 656 | |
4a7371e9 | 657 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 658 | if (!table) |
659 | return 0; | |
40c7bdb0 | 660 | |
d62a17ae | 661 | /* Lookup nexthop in IPv6 routing table. */ |
662 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
663 | p.family = AF_INET6; | |
664 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
665 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 666 | |
d62a17ae | 667 | rn = route_node_match(table, (struct prefix *)&p); |
668 | if (!rn) | |
669 | return 0; | |
40c7bdb0 | 670 | |
d62a17ae | 671 | route_unlock_node(rn); |
40c7bdb0 | 672 | |
d62a17ae | 673 | /* Locate a valid connected route. */ |
a2addae8 | 674 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 675 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
676 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
677 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
678 | break; | |
679 | } | |
40c7bdb0 | 680 | |
c415d895 | 681 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 682 | return 0; |
40c7bdb0 | 683 | |
c415d895 | 684 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 685 | return 1; |
40c7bdb0 | 686 | } |
687 | ||
688 | ||
689 | /* | |
690 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
691 | * or not. | |
692 | * NOTE: Each NHLFE points to only 1 nexthop. | |
693 | */ | |
d62a17ae | 694 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
695 | { | |
696 | struct nexthop *nexthop; | |
697 | struct interface *ifp; | |
86f07f44 | 698 | struct zebra_ns *zns; |
d62a17ae | 699 | |
700 | nexthop = nhlfe->nexthop; | |
701 | if (!nexthop) // unexpected | |
702 | return 0; | |
703 | ||
704 | /* Check on nexthop based on type. */ | |
705 | switch (nexthop->type) { | |
b9abd9ad DS |
706 | case NEXTHOP_TYPE_IFINDEX: |
707 | /* | |
708 | * Lookup if this type is special. The | |
709 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
710 | * forward into a different table for | |
711 | * processing. As such this ifindex | |
712 | * passed to us may be a VRF device | |
713 | * which will not be in the default | |
714 | * VRF. So let's look in all of them | |
715 | */ | |
86f07f44 PG |
716 | zns = zebra_ns_lookup(NS_DEFAULT); |
717 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
718 | if (ifp && if_is_operative(ifp)) |
719 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
720 | else | |
721 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
722 | break; | |
d62a17ae | 723 | case NEXTHOP_TYPE_IPV4: |
724 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
725 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
726 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
727 | else | |
728 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
729 | break; | |
730 | ||
731 | case NEXTHOP_TYPE_IPV6: | |
732 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
733 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
734 | else | |
735 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
736 | break; | |
737 | ||
738 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
739 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
740 | ifp = if_lookup_by_index(nexthop->ifindex, |
741 | nexthop->vrf_id); | |
d62a17ae | 742 | if (ifp && if_is_operative(ifp)) |
743 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
744 | else | |
745 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
746 | } else { | |
747 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
748 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
749 | else | |
750 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
751 | } | |
752 | break; | |
753 | ||
754 | default: | |
755 | break; | |
756 | } | |
757 | ||
758 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 759 | } |
760 | ||
761 | /* | |
762 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
763 | * reachability and select the best. Multipath entries are also | |
764 | * marked. This is invoked when an LSP scheduled for processing (due | |
765 | * to some change) is examined. | |
766 | */ | |
d62a17ae | 767 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
768 | { | |
769 | zebra_nhlfe_t *nhlfe; | |
770 | zebra_nhlfe_t *best; | |
771 | struct nexthop *nexthop; | |
772 | int changed = 0; | |
773 | ||
774 | if (!lsp) | |
775 | return; | |
776 | ||
777 | best = NULL; | |
778 | lsp->num_ecmp = 0; | |
779 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
780 | ||
781 | /* | |
782 | * First compute the best path, after checking nexthop status. We are | |
5e29e1a1 | 783 | * only concerned with non-deleted NHLFEs. |
d62a17ae | 784 | */ |
ee70f629 | 785 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 786 | /* Clear selection flags. */ |
787 | UNSET_FLAG(nhlfe->flags, | |
788 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
789 | ||
790 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
791 | && nhlfe_nexthop_active(nhlfe)) { | |
792 | if (!best || (nhlfe->distance < best->distance)) | |
793 | best = nhlfe; | |
794 | } | |
795 | } | |
796 | ||
797 | lsp->best_nhlfe = best; | |
798 | if (!lsp->best_nhlfe) | |
799 | return; | |
800 | ||
5e29e1a1 MS |
801 | /* |
802 | * Check the active status of backup nhlfes also | |
803 | */ | |
804 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
805 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
806 | (void)nhlfe_nexthop_active(nhlfe); | |
807 | } | |
808 | ||
d62a17ae | 809 | /* Mark best NHLFE as selected. */ |
810 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
811 | ||
812 | /* | |
813 | * If best path exists, see if there is ECMP. While doing this, note if | |
814 | * a | |
815 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
816 | * still selected has a change or an installed entry is to be removed. | |
817 | */ | |
ee70f629 | 818 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 819 | int nh_chg, nh_sel, nh_inst; |
820 | ||
821 | nexthop = nhlfe->nexthop; | |
822 | if (!nexthop) // unexpected | |
823 | continue; | |
824 | ||
825 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
826 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
827 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
828 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
829 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
830 | lsp->num_ecmp++; | |
831 | } | |
832 | ||
833 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
834 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
835 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
836 | nh_inst = | |
837 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
838 | ||
839 | if ((nh_sel && !nh_inst) | |
840 | || (nh_sel && nh_inst && nh_chg) | |
841 | || (nh_inst && !nh_sel)) | |
842 | changed = 1; | |
843 | } | |
844 | ||
845 | /* We have finished examining, clear changed flag. */ | |
846 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
847 | } | |
848 | ||
849 | if (changed) | |
850 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 851 | } |
852 | ||
853 | /* | |
854 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
855 | * process exit. | |
856 | */ | |
e3b78da8 | 857 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 858 | { |
d62a17ae | 859 | zebra_lsp_t *lsp; |
40c7bdb0 | 860 | |
e3b78da8 | 861 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 862 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 863 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 864 | } |
865 | ||
866 | /* | |
867 | * Schedule LSP forwarding entry for processing. Called upon changes | |
868 | * that may impact LSPs such as nexthop / connected route changes. | |
869 | */ | |
e3b78da8 | 870 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 871 | { |
d62a17ae | 872 | zebra_lsp_t *lsp; |
40c7bdb0 | 873 | |
e3b78da8 | 874 | lsp = (zebra_lsp_t *)bucket->data; |
2aa2a407 MS |
875 | |
876 | /* In the common flow, this is used when external events occur. For | |
877 | * LSPs with backup nhlfes, we'll assume that the forwarding | |
878 | * plane will use the backups to handle these events, until the | |
879 | * owning protocol can react. | |
880 | */ | |
881 | if (ctxt == NULL) { | |
882 | /* Skip LSPs with backups */ | |
883 | if (nhlfe_list_first(&lsp->backup_nhlfe_list) != NULL) { | |
884 | if (IS_ZEBRA_DEBUG_MPLS_DETAIL) | |
885 | zlog_debug("%s: skip LSP in-label %u", | |
886 | __func__, lsp->ile.in_label); | |
887 | return; | |
888 | } | |
889 | } | |
890 | ||
0af35d90 | 891 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 892 | } |
893 | ||
894 | /* | |
895 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
896 | * any multipaths and update or delete from the kernel, as needed. | |
897 | */ | |
d62a17ae | 898 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
899 | { | |
900 | zebra_lsp_t *lsp; | |
901 | zebra_nhlfe_t *oldbest, *newbest; | |
902 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
903 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 904 | enum zebra_dplane_result res; |
d62a17ae | 905 | |
906 | lsp = (zebra_lsp_t *)data; | |
907 | if (!lsp) // unexpected | |
908 | return WQ_SUCCESS; | |
909 | ||
910 | oldbest = lsp->best_nhlfe; | |
911 | ||
912 | /* Select best NHLFE(s) */ | |
913 | lsp_select_best_nhlfe(lsp); | |
914 | ||
915 | newbest = lsp->best_nhlfe; | |
916 | ||
917 | if (IS_ZEBRA_DEBUG_MPLS) { | |
918 | if (oldbest) | |
5e29e1a1 | 919 | nhlfe2str(oldbest, buf, sizeof(buf)); |
d62a17ae | 920 | if (newbest) |
5e29e1a1 | 921 | nhlfe2str(newbest, buf2, sizeof(buf2)); |
d62a17ae | 922 | zlog_debug( |
3efd0893 | 923 | "Process LSP in-label %u oldbest %s newbest %s flags 0x%x ecmp# %d", |
d62a17ae | 924 | lsp->ile.in_label, oldbest ? buf : "NULL", |
925 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
926 | } | |
927 | ||
928 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
929 | /* Not already installed */ | |
930 | if (newbest) { | |
2b63430c DS |
931 | |
932 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
933 | |
934 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 935 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
936 | /* Set 'installed' flag so we will know |
937 | * that an install is in-flight. | |
938 | */ | |
939 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
940 | ||
941 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 942 | break; |
ea1c14f6 | 943 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
944 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
945 | "LSP Install Failure: %u", | |
946 | lsp->ile.in_label); | |
7c5d0e18 | 947 | break; |
ea1c14f6 | 948 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
949 | zvrf->lsp_installs++; |
950 | break; | |
951 | } | |
d62a17ae | 952 | } |
953 | } else { | |
954 | /* Installed, may need an update and/or delete. */ | |
955 | if (!newbest) { | |
d37f4d6c MS |
956 | res = dplane_lsp_delete(lsp); |
957 | ||
958 | /* We do some of the lsp cleanup immediately for | |
959 | * deletes. | |
960 | */ | |
961 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
962 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 963 | |
d37f4d6c | 964 | switch (res) { |
ea1c14f6 | 965 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 966 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 967 | break; |
ea1c14f6 | 968 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
969 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
970 | "LSP Deletion Failure: %u", | |
971 | lsp->ile.in_label); | |
7c5d0e18 | 972 | break; |
ea1c14f6 | 973 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
974 | zvrf->lsp_removals++; |
975 | break; | |
976 | } | |
d62a17ae | 977 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
978 | zebra_nhlfe_t *nhlfe; |
979 | struct nexthop *nexthop; | |
2b63430c DS |
980 | |
981 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
982 | |
983 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 984 | * so we know an update is in-flight. |
d37f4d6c | 985 | */ |
e6d44ec7 | 986 | |
9fa38ec6 DS |
987 | /* |
988 | * Any NHLFE that was installed but is not | |
989 | * selected now needs to have its flags updated. | |
990 | */ | |
ee70f629 | 991 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
9fa38ec6 DS |
992 | nexthop = nhlfe->nexthop; |
993 | if (!nexthop) | |
994 | continue; | |
995 | ||
996 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
997 | NHLFE_FLAG_INSTALLED) |
998 | && !CHECK_FLAG(nhlfe->flags, | |
999 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
1000 | UNSET_FLAG(nhlfe->flags, |
1001 | NHLFE_FLAG_INSTALLED); | |
1002 | UNSET_FLAG(nexthop->flags, | |
1003 | NEXTHOP_FLAG_FIB); | |
1004 | } | |
1005 | } | |
1006 | ||
d37f4d6c | 1007 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 1008 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 1009 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 1010 | break; |
ea1c14f6 | 1011 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
1012 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1013 | "LSP Update Failure: %u", | |
1014 | lsp->ile.in_label); | |
7c5d0e18 | 1015 | break; |
ea1c14f6 | 1016 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1017 | zvrf->lsp_installs++; |
1018 | break; | |
1019 | } | |
d62a17ae | 1020 | } |
1021 | } | |
1022 | ||
1023 | return WQ_SUCCESS; | |
40c7bdb0 | 1024 | } |
1025 | ||
1026 | ||
1027 | /* | |
1028 | * Callback upon processing completion of a LSP forwarding entry. | |
1029 | */ | |
d62a17ae | 1030 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1031 | { |
d62a17ae | 1032 | struct zebra_vrf *zvrf; |
1033 | zebra_lsp_t *lsp; | |
1034 | struct hash *lsp_table; | |
ee70f629 | 1035 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1036 | |
d62a17ae | 1037 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1038 | assert(zvrf); | |
40c7bdb0 | 1039 | |
d62a17ae | 1040 | lsp_table = zvrf->lsp_table; |
1041 | if (!lsp_table) // unexpected | |
1042 | return; | |
40c7bdb0 | 1043 | |
d62a17ae | 1044 | lsp = (zebra_lsp_t *)data; |
1045 | if (!lsp) // unexpected | |
1046 | return; | |
40c7bdb0 | 1047 | |
d62a17ae | 1048 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1049 | * exist, | |
1050 | * delete LSP entry also. | |
1051 | */ | |
1052 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1053 | |
ee70f629 | 1054 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1055 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) |
1056 | nhlfe_del(nhlfe); | |
1057 | } | |
40c7bdb0 | 1058 | |
1323491d MS |
1059 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1060 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1061 | nhlfe_del(nhlfe); | |
1062 | } | |
1063 | ||
1064 | lsp_check_free(lsp_table, &lsp); | |
40c7bdb0 | 1065 | } |
1066 | ||
1067 | /* | |
1068 | * Callback upon finishing the processing of all scheduled | |
1069 | * LSP forwarding entries. | |
1070 | */ | |
d62a17ae | 1071 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1072 | { |
d62a17ae | 1073 | /* Nothing to do for now. */ |
40c7bdb0 | 1074 | } |
1075 | ||
1076 | /* | |
1077 | * Add LSP forwarding entry to queue for subsequent processing. | |
1078 | */ | |
d62a17ae | 1079 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1080 | { |
d62a17ae | 1081 | /* If already scheduled, exit. */ |
1082 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1083 | return 0; | |
40c7bdb0 | 1084 | |
e2353ec2 | 1085 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1086 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1087 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1088 | return -1; |
1089 | } | |
33c32282 | 1090 | |
e2353ec2 | 1091 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1092 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1093 | return 0; | |
40c7bdb0 | 1094 | } |
1095 | ||
1096 | /* | |
1097 | * Callback to allocate LSP forwarding table entry. | |
1098 | */ | |
d62a17ae | 1099 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1100 | { |
d62a17ae | 1101 | const zebra_ile_t *ile = p; |
1102 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1103 | |
d62a17ae | 1104 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1105 | lsp->ile = *ile; | |
ee70f629 | 1106 | nhlfe_list_init(&lsp->nhlfe_list); |
cd4bb96f | 1107 | nhlfe_list_init(&lsp->backup_nhlfe_list); |
40c7bdb0 | 1108 | |
d62a17ae | 1109 | if (IS_ZEBRA_DEBUG_MPLS) |
1110 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1111 | |
d62a17ae | 1112 | return ((void *)lsp); |
40c7bdb0 | 1113 | } |
1114 | ||
1323491d MS |
1115 | /* |
1116 | * Check whether lsp can be freed - no nhlfes, e.g., and call free api | |
1117 | */ | |
1118 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1119 | { | |
1120 | zebra_lsp_t *lsp; | |
1121 | ||
1122 | if (plsp == NULL || *plsp == NULL) | |
1123 | return; | |
1124 | ||
1125 | lsp = *plsp; | |
1126 | ||
1127 | if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL) && | |
1128 | (nhlfe_list_first(&lsp->backup_nhlfe_list) == NULL) && | |
1129 | !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1130 | lsp_free(lsp_table, plsp); | |
1131 | } | |
1132 | ||
ebab422a MS |
1133 | /* |
1134 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1135 | * free LSP object. | |
1136 | */ | |
1137 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1138 | { | |
1139 | zebra_lsp_t *lsp; | |
ee70f629 | 1140 | zebra_nhlfe_t *nhlfe; |
ebab422a MS |
1141 | |
1142 | if (plsp == NULL || *plsp == NULL) | |
1143 | return; | |
1144 | ||
1145 | lsp = *plsp; | |
1146 | ||
1147 | if (IS_ZEBRA_DEBUG_MPLS) | |
1148 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1149 | lsp->ile.in_label, lsp->flags); | |
1150 | ||
1151 | /* Free nhlfes, if any. */ | |
ee70f629 | 1152 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
ebab422a | 1153 | nhlfe_del(nhlfe); |
ebab422a | 1154 | |
cd4bb96f MS |
1155 | /* Free backup nhlfes, if any. */ |
1156 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) | |
1157 | nhlfe_del(nhlfe); | |
1158 | ||
ebab422a MS |
1159 | hash_release(lsp_table, &lsp->ile); |
1160 | XFREE(MTYPE_LSP, lsp); | |
1161 | ||
1162 | *plsp = NULL; | |
1163 | } | |
1164 | ||
40c7bdb0 | 1165 | /* |
1166 | * Create printable string for NHLFE entry. | |
1167 | */ | |
608a57c0 | 1168 | static char *nhlfe2str(const zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1169 | { |
608a57c0 | 1170 | const struct nexthop *nexthop; |
40c7bdb0 | 1171 | |
d62a17ae | 1172 | buf[0] = '\0'; |
1173 | nexthop = nhlfe->nexthop; | |
1174 | switch (nexthop->type) { | |
1175 | case NEXTHOP_TYPE_IPV4: | |
1176 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1177 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1178 | break; | |
1179 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1180 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1181 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1182 | break; | |
b9abd9ad DS |
1183 | case NEXTHOP_TYPE_IFINDEX: |
1184 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1185 | default: |
1186 | break; | |
1187 | } | |
40c7bdb0 | 1188 | |
d62a17ae | 1189 | return buf; |
40c7bdb0 | 1190 | } |
1191 | ||
1192 | /* | |
1193 | * Check if NHLFE matches with search info passed. | |
1194 | */ | |
d62a17ae | 1195 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1196 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1197 | { |
d62a17ae | 1198 | struct nexthop *nhop; |
1199 | int cmp = 1; | |
40c7bdb0 | 1200 | |
d62a17ae | 1201 | nhop = nhlfe->nexthop; |
1202 | if (!nhop) | |
1203 | return 1; | |
40c7bdb0 | 1204 | |
d62a17ae | 1205 | if (nhop->type != gtype) |
1206 | return 1; | |
40c7bdb0 | 1207 | |
d62a17ae | 1208 | switch (nhop->type) { |
1209 | case NEXTHOP_TYPE_IPV4: | |
1210 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1211 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1212 | sizeof(struct in_addr)); | |
1213 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1214 | cmp = !(nhop->ifindex == ifindex); | |
1215 | break; | |
1216 | case NEXTHOP_TYPE_IPV6: | |
1217 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1218 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1219 | sizeof(struct in6_addr)); | |
1220 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1221 | cmp = !(nhop->ifindex == ifindex); | |
1222 | break; | |
b9abd9ad DS |
1223 | case NEXTHOP_TYPE_IFINDEX: |
1224 | cmp = !(nhop->ifindex == ifindex); | |
1225 | break; | |
d62a17ae | 1226 | default: |
1227 | break; | |
1228 | } | |
40c7bdb0 | 1229 | |
d62a17ae | 1230 | return cmp; |
40c7bdb0 | 1231 | } |
1232 | ||
1233 | ||
1234 | /* | |
1235 | * Locate NHLFE that matches with passed info. | |
1236 | */ | |
ee70f629 MS |
1237 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
1238 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
1239 | enum nexthop_types_t gtype, |
1240 | const union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1241 | { |
d62a17ae | 1242 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1243 | |
ee70f629 | 1244 | frr_each_safe(nhlfe_list, list, nhlfe) { |
d62a17ae | 1245 | if (nhlfe->type != lsp_type) |
1246 | continue; | |
1247 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1248 | break; | |
1249 | } | |
40c7bdb0 | 1250 | |
d62a17ae | 1251 | return nhlfe; |
40c7bdb0 | 1252 | } |
1253 | ||
ee70f629 MS |
1254 | /* |
1255 | * Allocate and init new NHLFE. | |
1256 | */ | |
cd4bb96f MS |
1257 | static zebra_nhlfe_t *nhlfe_alloc(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1258 | enum nexthop_types_t gtype, | |
1259 | const union g_addr *gate, ifindex_t ifindex, | |
1260 | uint8_t num_labels, | |
1261 | const mpls_label_t *labels) | |
d62a17ae | 1262 | { |
1263 | zebra_nhlfe_t *nhlfe; | |
1264 | struct nexthop *nexthop; | |
1265 | ||
3e0a9b40 | 1266 | assert(lsp); |
d62a17ae | 1267 | |
1268 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1269 | |
1270 | nhlfe->lsp = lsp; | |
1271 | nhlfe->type = lsp_type; | |
1272 | nhlfe->distance = lsp_distance(lsp_type); | |
1273 | ||
1274 | nexthop = nexthop_new(); | |
cd4bb96f | 1275 | |
5065db0a | 1276 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1277 | |
4a7371e9 | 1278 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1279 | nexthop->type = gtype; |
1280 | switch (nexthop->type) { | |
1281 | case NEXTHOP_TYPE_IPV4: | |
1282 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1283 | nexthop->gate.ipv4 = gate->ipv4; | |
1284 | if (ifindex) | |
1285 | nexthop->ifindex = ifindex; | |
1286 | break; | |
1287 | case NEXTHOP_TYPE_IPV6: | |
1288 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1289 | nexthop->gate.ipv6 = gate->ipv6; | |
1290 | if (ifindex) | |
1291 | nexthop->ifindex = ifindex; | |
1292 | break; | |
b9abd9ad DS |
1293 | case NEXTHOP_TYPE_IFINDEX: |
1294 | nexthop->ifindex = ifindex; | |
1295 | break; | |
d62a17ae | 1296 | default: |
1297 | nexthop_free(nexthop); | |
1298 | XFREE(MTYPE_NHLFE, nhlfe); | |
1299 | return NULL; | |
d62a17ae | 1300 | } |
d62a17ae | 1301 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1302 | |
1303 | return nhlfe; | |
1304 | } | |
1305 | ||
1306 | /* | |
cc1b9746 MS |
1307 | * Add primary or backup NHLFE. Base entry must have been created and |
1308 | * duplicate check done. | |
ee70f629 MS |
1309 | */ |
1310 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
1311 | enum nexthop_types_t gtype, | |
1312 | const union g_addr *gate, ifindex_t ifindex, | |
cc1b9746 MS |
1313 | uint8_t num_labels, const mpls_label_t *labels, |
1314 | bool is_backup) | |
ee70f629 MS |
1315 | { |
1316 | zebra_nhlfe_t *nhlfe; | |
1317 | ||
1318 | if (!lsp) | |
1319 | return NULL; | |
1320 | ||
1321 | /* Allocate new object */ | |
cd4bb96f MS |
1322 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1323 | labels); | |
1324 | ||
cc1b9746 MS |
1325 | /* Enqueue to LSP: primaries at head of list, backups at tail */ |
1326 | if (is_backup) { | |
1327 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
1328 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); | |
1329 | } else | |
1330 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); | |
d62a17ae | 1331 | |
1332 | return nhlfe; | |
40c7bdb0 | 1333 | } |
1334 | ||
1335 | /* | |
cd4bb96f MS |
1336 | * Common delete for NHLFEs. |
1337 | */ | |
1338 | static void nhlfe_free(zebra_nhlfe_t *nhlfe) | |
1339 | { | |
1340 | if (!nhlfe) | |
1341 | return; | |
1342 | ||
1343 | /* Free nexthop. */ | |
1344 | if (nhlfe->nexthop) | |
1345 | nexthop_free(nhlfe->nexthop); | |
1346 | ||
1347 | nhlfe->nexthop = NULL; | |
1348 | ||
1349 | XFREE(MTYPE_NHLFE, nhlfe); | |
1350 | } | |
1351 | ||
1352 | ||
1353 | /* | |
1354 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1355 | */ |
d62a17ae | 1356 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1357 | { |
d62a17ae | 1358 | zebra_lsp_t *lsp; |
40c7bdb0 | 1359 | |
d62a17ae | 1360 | if (!nhlfe) |
1361 | return -1; | |
40c7bdb0 | 1362 | |
d62a17ae | 1363 | lsp = nhlfe->lsp; |
1364 | if (!lsp) | |
1365 | return -1; | |
40c7bdb0 | 1366 | |
d62a17ae | 1367 | if (nhlfe == lsp->best_nhlfe) |
1368 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1369 | |
ee70f629 | 1370 | /* Unlink from LSP */ |
cd4bb96f MS |
1371 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1372 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1373 | else | |
1374 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1375 | |
cd4bb96f MS |
1376 | nhlfe->lsp = NULL; |
1377 | ||
1378 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1379 | |
d62a17ae | 1380 | return 0; |
40c7bdb0 | 1381 | } |
1382 | ||
a64448ba DS |
1383 | /* |
1384 | * Update label for NHLFE entry. | |
1385 | */ | |
d62a17ae | 1386 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1387 | struct mpls_label_stack *nh_label) |
d62a17ae | 1388 | { |
1389 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1390 | } | |
1391 | ||
1392 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1393 | enum lsp_types_t type) | |
1394 | { | |
ee70f629 | 1395 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 1396 | int schedule_lsp = 0; |
1397 | char buf[BUFSIZ]; | |
1398 | ||
4a2a5236 MS |
1399 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1400 | schedule_lsp = 1; | |
1401 | ||
d62a17ae | 1402 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ |
ee70f629 | 1403 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1404 | /* Skip non-static NHLFEs */ |
1405 | if (nhlfe->type != type) | |
1406 | continue; | |
1407 | ||
1408 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1409 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 1410 | zlog_debug( |
1411 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1412 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1413 | } | |
1414 | ||
1415 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1416 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1417 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1418 | schedule_lsp = 1; | |
1419 | } else { | |
1420 | nhlfe_del(nhlfe); | |
1421 | } | |
1422 | } | |
1423 | ||
f2e7f4eb MS |
1424 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1425 | /* Skip non-static NHLFEs */ | |
1426 | if (nhlfe->type != type) | |
1427 | continue; | |
1428 | ||
1429 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 1430 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
f2e7f4eb MS |
1431 | zlog_debug( |
1432 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1433 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1434 | } | |
1435 | ||
1436 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1437 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1438 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1439 | schedule_lsp = 1; | |
1440 | } else { | |
1441 | nhlfe_del(nhlfe); | |
1442 | } | |
1443 | } | |
1444 | ||
d62a17ae | 1445 | /* Queue LSP for processing, if needed, else delete. */ |
1446 | if (schedule_lsp) { | |
4a2a5236 MS |
1447 | if (IS_ZEBRA_DEBUG_MPLS) { |
1448 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
1449 | lsp->ile.in_label, lsp->flags); | |
1450 | } | |
d62a17ae | 1451 | if (lsp_processq_add(lsp)) |
1452 | return -1; | |
1323491d MS |
1453 | } else { |
1454 | lsp_check_free(lsp_table, &lsp); | |
1455 | } | |
d62a17ae | 1456 | |
1457 | return 0; | |
40c7bdb0 | 1458 | } |
1459 | ||
ce549947 RW |
1460 | /* |
1461 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1462 | * If no other NHLFEs exist, the entry would be deleted. | |
1463 | */ | |
d62a17ae | 1464 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1465 | mpls_label_t in_label) | |
ce549947 | 1466 | { |
d62a17ae | 1467 | struct hash *lsp_table; |
1468 | zebra_ile_t tmp_ile; | |
1469 | zebra_lsp_t *lsp; | |
ce549947 | 1470 | |
d62a17ae | 1471 | /* Lookup table. */ |
1472 | lsp_table = zvrf->lsp_table; | |
1473 | if (!lsp_table) | |
1474 | return -1; | |
ce549947 | 1475 | |
d62a17ae | 1476 | /* If entry is not present, exit. */ |
1477 | tmp_ile.in_label = in_label; | |
1478 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1479 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1480 | return 0; |
ce549947 | 1481 | |
d62a17ae | 1482 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1483 | } |
1484 | ||
d62a17ae | 1485 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1486 | { |
d62a17ae | 1487 | char buf[BUFSIZ]; |
1488 | json_object *json_nhlfe = NULL; | |
3c0e1622 | 1489 | json_object *json_backups = NULL; |
31f937fb | 1490 | json_object *json_label_stack; |
d62a17ae | 1491 | struct nexthop *nexthop = nhlfe->nexthop; |
3c0e1622 | 1492 | int i; |
b78b820d | 1493 | |
d62a17ae | 1494 | json_nhlfe = json_object_new_object(); |
1495 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1496 | json_object_int_add(json_nhlfe, "outLabel", | |
1497 | nexthop->nh_label->label[0]); | |
31f937fb SM |
1498 | |
1499 | json_label_stack = json_object_new_array(); | |
1500 | json_object_object_add(json_nhlfe, "outLabelStack", json_label_stack); | |
1501 | for (i = 0; i < nexthop->nh_label->num_labels; i++) | |
1502 | json_object_array_add( | |
1503 | json_label_stack, | |
1504 | json_object_new_int(nexthop->nh_label->label[i])); | |
1505 | ||
d62a17ae | 1506 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); |
b78b820d | 1507 | |
d62a17ae | 1508 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1509 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1510 | |
d62a17ae | 1511 | switch (nexthop->type) { |
1512 | case NEXTHOP_TYPE_IPV4: | |
1513 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1514 | json_object_string_add(json_nhlfe, "nexthop", | |
9bcef951 MS |
1515 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
1516 | buf, sizeof(buf))); | |
d62a17ae | 1517 | break; |
1518 | case NEXTHOP_TYPE_IPV6: | |
1519 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1520 | json_object_string_add( | |
1521 | json_nhlfe, "nexthop", | |
1522 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1523 | ||
1524 | if (nexthop->ifindex) | |
4a7371e9 DS |
1525 | json_object_string_add(json_nhlfe, "interface", |
1526 | ifindex2ifname(nexthop->ifindex, | |
1527 | nexthop->vrf_id)); | |
d62a17ae | 1528 | break; |
1529 | default: | |
1530 | break; | |
1531 | } | |
3c0e1622 MS |
1532 | |
1533 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP)) { | |
1534 | json_backups = json_object_new_array(); | |
1535 | for (i = 0; i < nexthop->backup_num; i++) { | |
1536 | json_object_array_add( | |
1537 | json_backups, | |
1538 | json_object_new_int(nexthop->backup_idx[i])); | |
1539 | } | |
1540 | ||
1541 | json_object_object_add(json_nhlfe, "backupIndex", | |
1542 | json_backups); | |
1543 | } | |
1544 | ||
d62a17ae | 1545 | return json_nhlfe; |
b78b820d | 1546 | } |
1547 | ||
3ab18ff2 | 1548 | /* |
1549 | * Print the NHLFE for a LSP forwarding entry. | |
1550 | */ | |
3c0e1622 MS |
1551 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty, |
1552 | const char *indent) | |
d62a17ae | 1553 | { |
1554 | struct nexthop *nexthop; | |
a29c2887 | 1555 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1556 | |
1557 | nexthop = nhlfe->nexthop; | |
1558 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1559 | return; | |
1560 | ||
1561 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1562 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1563 | mpls_label2str(nexthop->nh_label->num_labels, |
1564 | nexthop->nh_label->label, | |
1565 | buf, sizeof(buf), 0), | |
d62a17ae | 1566 | nhlfe->distance); |
3c0e1622 MS |
1567 | |
1568 | if (indent) | |
1569 | vty_out(vty, "%s", indent); | |
1570 | ||
d62a17ae | 1571 | switch (nexthop->type) { |
1572 | case NEXTHOP_TYPE_IPV4: | |
1573 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
9bcef951 | 1574 | vty_out(vty, " via %pI4", &nexthop->gate.ipv4); |
d62a17ae | 1575 | if (nexthop->ifindex) |
1576 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1577 | ifindex2ifname(nexthop->ifindex, |
1578 | nexthop->vrf_id)); | |
d62a17ae | 1579 | break; |
1580 | case NEXTHOP_TYPE_IPV6: | |
1581 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1582 | vty_out(vty, " via %s", | |
2896f40e MS |
1583 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, |
1584 | sizeof(buf))); | |
d62a17ae | 1585 | if (nexthop->ifindex) |
1586 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1587 | ifindex2ifname(nexthop->ifindex, |
1588 | nexthop->vrf_id)); | |
d62a17ae | 1589 | break; |
1590 | default: | |
1591 | break; | |
1592 | } | |
5e29e1a1 MS |
1593 | vty_out(vty, "%s", |
1594 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP) ? " (backup)" | |
1595 | : ""); | |
996c9314 LB |
1596 | vty_out(vty, "%s", |
1597 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1598 | : ""); | |
d62a17ae | 1599 | vty_out(vty, "\n"); |
3ab18ff2 | 1600 | } |
1601 | ||
1602 | /* | |
1603 | * Print an LSP forwarding entry. | |
1604 | */ | |
a29c2887 | 1605 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp) |
3ab18ff2 | 1606 | { |
a29c2887 | 1607 | zebra_nhlfe_t *nhlfe, *backup; |
474aebd9 | 1608 | int i, j; |
3ab18ff2 | 1609 | |
d62a17ae | 1610 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1611 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1612 | : ""); | |
3ab18ff2 | 1613 | |
a29c2887 | 1614 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3c0e1622 | 1615 | nhlfe_print(nhlfe, vty, NULL); |
a29c2887 | 1616 | |
3c0e1622 | 1617 | if (nhlfe->nexthop == NULL || |
474aebd9 MS |
1618 | !CHECK_FLAG(nhlfe->nexthop->flags, |
1619 | NEXTHOP_FLAG_HAS_BACKUP)) | |
1620 | continue; | |
a29c2887 | 1621 | |
474aebd9 | 1622 | /* Backup nhlfes: find backups in backup list */ |
a29c2887 | 1623 | |
474aebd9 | 1624 | for (j = 0; j < nhlfe->nexthop->backup_num; j++) { |
a29c2887 | 1625 | i = 0; |
5e29e1a1 | 1626 | backup = NULL; |
a29c2887 | 1627 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { |
474aebd9 | 1628 | if (i == nhlfe->nexthop->backup_idx[j]) |
a29c2887 MS |
1629 | break; |
1630 | i++; | |
1631 | } | |
1632 | ||
1633 | if (backup) { | |
1634 | vty_out(vty, " [backup %d]", i); | |
3c0e1622 | 1635 | nhlfe_print(backup, vty, " "); |
a29c2887 MS |
1636 | } |
1637 | } | |
1638 | } | |
3ab18ff2 | 1639 | } |
1640 | ||
1641 | /* | |
b78b820d | 1642 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1643 | */ |
d62a17ae | 1644 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1645 | { |
d62a17ae | 1646 | zebra_nhlfe_t *nhlfe = NULL; |
1647 | json_object *json = json_object_new_object(); | |
1648 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1649 | |
d62a17ae | 1650 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1651 | |
d62a17ae | 1652 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1653 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1654 | |
ee70f629 | 1655 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1656 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1657 | |
d62a17ae | 1658 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
3c0e1622 MS |
1659 | json_nhlfe_list = NULL; |
1660 | ||
1661 | ||
1662 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { | |
1663 | if (json_nhlfe_list == NULL) | |
1664 | json_nhlfe_list = json_object_new_array(); | |
1665 | ||
1666 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
1667 | } | |
1668 | ||
1669 | if (json_nhlfe_list) | |
1670 | json_object_object_add(json, "backupNexthops", json_nhlfe_list); | |
1671 | ||
d62a17ae | 1672 | return json; |
b78b820d | 1673 | } |
1674 | ||
1675 | ||
1676 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1677 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1678 | { |
d62a17ae | 1679 | unsigned int i; |
e3b78da8 | 1680 | struct hash_bucket *hb; |
d62a17ae | 1681 | struct list *sorted_list = list_new(); |
b78b820d | 1682 | |
d62a17ae | 1683 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1684 | |
d62a17ae | 1685 | for (i = 0; i < hash->size; i++) |
1686 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1687 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1688 | |
d62a17ae | 1689 | return sorted_list; |
3ab18ff2 | 1690 | } |
1691 | ||
7758e3f3 | 1692 | /* |
b78b820d | 1693 | * Compare two LSPs based on their label values. |
7758e3f3 | 1694 | */ |
e4a1ec74 | 1695 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1696 | { |
d62a17ae | 1697 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1698 | return -1; | |
7758e3f3 | 1699 | |
d62a17ae | 1700 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1701 | return 1; | |
7758e3f3 | 1702 | |
d62a17ae | 1703 | return 0; |
7758e3f3 | 1704 | } |
1705 | ||
40c7bdb0 | 1706 | /* |
1707 | * Initialize work queue for processing changed LSPs. | |
1708 | */ | |
2561d12e | 1709 | static int mpls_processq_init(void) |
40c7bdb0 | 1710 | { |
e2353ec2 DS |
1711 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1712 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1713 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1714 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1715 | return -1; |
1716 | } | |
40c7bdb0 | 1717 | |
e2353ec2 DS |
1718 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1719 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1720 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1721 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1722 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1723 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1724 | |
d62a17ae | 1725 | return 0; |
40c7bdb0 | 1726 | } |
1727 | ||
7758e3f3 | 1728 | |
d37f4d6c MS |
1729 | /* |
1730 | * Process LSP update results from zebra dataplane. | |
1731 | */ | |
1732 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1733 | { | |
1734 | struct zebra_vrf *zvrf; | |
31f937fb | 1735 | mpls_label_t label; |
d37f4d6c MS |
1736 | zebra_ile_t tmp_ile; |
1737 | struct hash *lsp_table; | |
1738 | zebra_lsp_t *lsp; | |
1739 | zebra_nhlfe_t *nhlfe; | |
1740 | struct nexthop *nexthop; | |
1741 | enum dplane_op_e op; | |
8841f96e | 1742 | enum zebra_dplane_result status; |
31f937fb | 1743 | enum zebra_sr_policy_update_label_mode update_mode; |
d37f4d6c MS |
1744 | |
1745 | op = dplane_ctx_get_op(ctx); | |
1746 | status = dplane_ctx_get_status(ctx); | |
1747 | ||
1748 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1749 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1750 | ctx, dplane_op2str(op), | |
1751 | dplane_ctx_get_in_label(ctx), | |
1752 | dplane_res2str(status)); | |
1753 | ||
31f937fb SM |
1754 | label = dplane_ctx_get_in_label(ctx); |
1755 | ||
d37f4d6c MS |
1756 | switch (op) { |
1757 | case DPLANE_OP_LSP_INSTALL: | |
1758 | case DPLANE_OP_LSP_UPDATE: | |
1759 | /* Look for zebra LSP object */ | |
1760 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1761 | if (zvrf == NULL) | |
1762 | break; | |
1763 | ||
1764 | lsp_table = zvrf->lsp_table; | |
1765 | ||
31f937fb | 1766 | tmp_ile.in_label = label; |
d37f4d6c MS |
1767 | lsp = hash_lookup(lsp_table, &tmp_ile); |
1768 | if (lsp == NULL) { | |
1769 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1770 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1771 | ctx, dplane_ctx_get_in_label(ctx)); | |
1772 | break; | |
1773 | } | |
1774 | ||
1775 | /* TODO -- Confirm that this result is still 'current' */ | |
1776 | ||
c3753405 | 1777 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1778 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1779 | clear_nhlfe_installed(lsp); | |
1780 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1781 | "LSP Install Failure: in-label %u", | |
1782 | lsp->ile.in_label); | |
c3753405 MS |
1783 | break; |
1784 | } | |
1785 | ||
1786 | /* Update zebra object */ | |
1787 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1788 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
1789 | nexthop = nhlfe->nexthop; | |
1790 | if (!nexthop) | |
1791 | continue; | |
1792 | ||
1793 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED) && | |
1794 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) { | |
1795 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1796 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1797 | } | |
d37f4d6c MS |
1798 | } |
1799 | ||
31f937fb SM |
1800 | update_mode = (op == DPLANE_OP_LSP_INSTALL) |
1801 | ? ZEBRA_SR_POLICY_LABEL_CREATED | |
1802 | : ZEBRA_SR_POLICY_LABEL_UPDATED; | |
1803 | zebra_sr_policy_label_update(label, update_mode); | |
d37f4d6c MS |
1804 | break; |
1805 | ||
1806 | case DPLANE_OP_LSP_DELETE: | |
31f937fb | 1807 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) { |
3fd385c6 DS |
1808 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
1809 | "LSP Deletion Failure: in-label %u", | |
1810 | dplane_ctx_get_in_label(ctx)); | |
31f937fb SM |
1811 | break; |
1812 | } | |
1813 | zebra_sr_policy_label_update(label, | |
1814 | ZEBRA_SR_POLICY_LABEL_REMOVED); | |
d37f4d6c MS |
1815 | break; |
1816 | ||
1817 | default: | |
1818 | break; | |
1819 | ||
1820 | } /* Switch */ | |
1821 | ||
1822 | dplane_ctx_fini(&ctx); | |
1823 | } | |
1824 | ||
104e3ad9 | 1825 | /* |
68110c42 MS |
1826 | * Process LSP installation info from two sets of nhlfes: a set from |
1827 | * a dplane notification, and a set from the zebra LSP object. Update | |
1828 | * counters of installed nexthops, and return whether the LSP has changed. | |
104e3ad9 | 1829 | */ |
68110c42 MS |
1830 | static bool compare_notif_nhlfes(const struct nhlfe_list_head *ctx_head, |
1831 | struct nhlfe_list_head *nhlfe_head, | |
1832 | int *start_counter, int *end_counter) | |
104e3ad9 | 1833 | { |
104e3ad9 MS |
1834 | zebra_nhlfe_t *nhlfe; |
1835 | const zebra_nhlfe_t *ctx_nhlfe; | |
1836 | struct nexthop *nexthop; | |
1837 | const struct nexthop *ctx_nexthop; | |
68110c42 | 1838 | int start_count = 0, end_count = 0; |
188a00e0 | 1839 | bool changed_p = false; |
104e3ad9 MS |
1840 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1841 | ||
68110c42 | 1842 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { |
104e3ad9 MS |
1843 | char buf[NEXTHOP_STRLEN]; |
1844 | ||
1845 | nexthop = nhlfe->nexthop; | |
1846 | if (!nexthop) | |
1847 | continue; | |
1848 | ||
1849 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1850 | start_count++; | |
1851 | ||
68110c42 | 1852 | ctx_nhlfe = NULL; |
104e3ad9 | 1853 | ctx_nexthop = NULL; |
68110c42 | 1854 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
104e3ad9 MS |
1855 | ctx_nexthop = ctx_nhlfe->nexthop; |
1856 | if (!ctx_nexthop) | |
1857 | continue; | |
1858 | ||
1859 | if ((ctx_nexthop->type == nexthop->type) && | |
1860 | nexthop_same(ctx_nexthop, nexthop)) { | |
1861 | /* Matched */ | |
1862 | break; | |
1863 | } | |
1864 | } | |
1865 | ||
1866 | if (is_debug) | |
1867 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1868 | ||
1869 | if (ctx_nhlfe && ctx_nexthop) { | |
1870 | if (is_debug) { | |
1871 | const char *tstr = ""; | |
1872 | ||
1873 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1874 | NHLFE_FLAG_INSTALLED)) | |
1875 | tstr = "not "; | |
1876 | ||
1877 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1878 | buf, tstr); | |
1879 | } | |
1880 | ||
188a00e0 | 1881 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1882 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1883 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1884 | |
1885 | if (!CHECK_FLAG(nhlfe->flags, | |
1886 | NHLFE_FLAG_INSTALLED)) | |
1887 | changed_p = true; | |
104e3ad9 MS |
1888 | |
1889 | /* Update counter */ | |
1890 | end_count++; | |
188a00e0 MS |
1891 | } else { |
1892 | ||
1893 | if (CHECK_FLAG(nhlfe->flags, | |
1894 | NHLFE_FLAG_INSTALLED)) | |
1895 | changed_p = true; | |
1896 | } | |
1897 | ||
1898 | } else { | |
1899 | /* Not mentioned in lfib set -> uninstalled */ | |
1900 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1901 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1902 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1903 | changed_p = true; | |
1904 | } | |
1905 | ||
1906 | if (is_debug) | |
1907 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1908 | buf); | |
1909 | } | |
1910 | } | |
1911 | ||
68110c42 MS |
1912 | if (start_counter) |
1913 | *start_counter += start_count; | |
1914 | if (end_counter) | |
1915 | *end_counter += end_count; | |
188a00e0 | 1916 | |
68110c42 MS |
1917 | return changed_p; |
1918 | } | |
188a00e0 | 1919 | |
68110c42 MS |
1920 | /* |
1921 | * Update an lsp nhlfe list from a dplane context, typically an async | |
1922 | * notification context. Update the LSP list to match the installed | |
1923 | * status from the context's list. | |
1924 | */ | |
1925 | static int update_nhlfes_from_ctx(struct nhlfe_list_head *nhlfe_head, | |
1926 | const struct nhlfe_list_head *ctx_head) | |
1927 | { | |
1928 | int ret = 0; | |
1929 | zebra_nhlfe_t *nhlfe; | |
1930 | const zebra_nhlfe_t *ctx_nhlfe; | |
1931 | struct nexthop *nexthop; | |
1932 | const struct nexthop *ctx_nexthop; | |
1933 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
1934 | ||
1935 | frr_each_safe(nhlfe_list, nhlfe_head, nhlfe) { | |
188a00e0 MS |
1936 | char buf[NEXTHOP_STRLEN]; |
1937 | ||
1938 | nexthop = nhlfe->nexthop; | |
1939 | if (!nexthop) | |
1940 | continue; | |
1941 | ||
c3753405 | 1942 | ctx_nhlfe = NULL; |
188a00e0 | 1943 | ctx_nexthop = NULL; |
c3753405 | 1944 | frr_each(nhlfe_list_const, ctx_head, ctx_nhlfe) { |
188a00e0 MS |
1945 | ctx_nexthop = ctx_nhlfe->nexthop; |
1946 | if (!ctx_nexthop) | |
1947 | continue; | |
1948 | ||
1949 | if ((ctx_nexthop->type == nexthop->type) && | |
1950 | nexthop_same(ctx_nexthop, nexthop)) { | |
1951 | /* Matched */ | |
1952 | break; | |
1953 | } | |
1954 | } | |
1955 | ||
1956 | if (is_debug) | |
1957 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1958 | ||
1959 | if (ctx_nhlfe && ctx_nexthop) { | |
1960 | ||
1961 | /* Bring zebra nhlfe install state into sync */ | |
1962 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1963 | NHLFE_FLAG_INSTALLED)) { | |
c3753405 MS |
1964 | if (is_debug) |
1965 | zlog_debug("%s: matched lsp nhlfe %s (installed)", | |
1966 | __func__, buf); | |
188a00e0 MS |
1967 | |
1968 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
00a9b150 | 1969 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 MS |
1970 | |
1971 | } else { | |
c3753405 MS |
1972 | if (is_debug) |
1973 | zlog_debug("%s: matched lsp nhlfe %s (not installed)", | |
1974 | __func__, buf); | |
188a00e0 | 1975 | |
104e3ad9 | 1976 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1977 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
188a00e0 | 1978 | } |
104e3ad9 MS |
1979 | |
1980 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
1981 | NEXTHOP_FLAG_FIB)) { |
1982 | SET_FLAG(nhlfe->nexthop->flags, | |
1983 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1984 | SET_FLAG(nhlfe->nexthop->flags, |
1985 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1986 | } else { |
1987 | UNSET_FLAG(nhlfe->nexthop->flags, | |
1988 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1989 | UNSET_FLAG(nhlfe->nexthop->flags, |
1990 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1991 | } |
1992 | ||
104e3ad9 MS |
1993 | } else { |
1994 | /* Not mentioned in lfib set -> uninstalled */ | |
c3753405 MS |
1995 | if (is_debug) |
1996 | zlog_debug("%s: no match for lsp nhlfe %s", | |
1997 | __func__, buf); | |
104e3ad9 | 1998 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
00a9b150 | 1999 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); |
104e3ad9 | 2000 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); |
188a00e0 | 2001 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2002 | } |
2003 | } | |
2004 | ||
68110c42 MS |
2005 | return ret; |
2006 | } | |
2007 | ||
2008 | /* | |
2009 | * Process async dplane notifications. | |
2010 | */ | |
2011 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
2012 | { | |
2013 | struct zebra_vrf *zvrf; | |
2014 | zebra_ile_t tmp_ile; | |
2015 | struct hash *lsp_table; | |
2016 | zebra_lsp_t *lsp; | |
2017 | const struct nhlfe_list_head *ctx_list; | |
2018 | int start_count = 0, end_count = 0; /* Installed counts */ | |
2019 | bool changed_p = false; | |
2020 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); | |
2021 | ||
2022 | if (is_debug) | |
2023 | zlog_debug("LSP dplane notif, in-label %u", | |
2024 | dplane_ctx_get_in_label(ctx)); | |
2025 | ||
2026 | /* Look for zebra LSP object */ | |
2027 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
2028 | if (zvrf == NULL) | |
2029 | goto done; | |
2030 | ||
2031 | lsp_table = zvrf->lsp_table; | |
2032 | ||
2033 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
2034 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2035 | if (lsp == NULL) { | |
2036 | if (is_debug) | |
2037 | zlog_debug("dplane LSP notif: in-label %u not found", | |
2038 | dplane_ctx_get_in_label(ctx)); | |
2039 | goto done; | |
2040 | } | |
2041 | ||
2042 | /* | |
2043 | * The dataplane/forwarding plane is notifying zebra about the state | |
2044 | * of the nexthops associated with this LSP. First, we take a | |
2045 | * pre-scan pass to determine whether the LSP has transitioned | |
2046 | * from installed -> uninstalled. In that case, we need to have | |
2047 | * the existing state of the LSP objects available before making | |
2048 | * any changes. | |
2049 | */ | |
2050 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2051 | ||
2052 | changed_p = compare_notif_nhlfes(ctx_list, &lsp->nhlfe_list, | |
2053 | &start_count, &end_count); | |
2054 | ||
2055 | if (is_debug) | |
2056 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2057 | start_count, end_count, | |
2058 | changed_p ? ", changed" : ""); | |
2059 | ||
2060 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2061 | ||
2062 | if (compare_notif_nhlfes(ctx_list, &lsp->backup_nhlfe_list, | |
2063 | &start_count, &end_count)) | |
2064 | /* Avoid accidentally setting back to 'false' */ | |
2065 | changed_p = true; | |
2066 | ||
2067 | if (is_debug) | |
2068 | zlog_debug("LSP dplane notif: lfib backups, start_count %d, end_count %d%s", | |
2069 | start_count, end_count, | |
2070 | changed_p ? ", changed" : ""); | |
2071 | ||
2072 | /* | |
2073 | * Has the LSP become uninstalled? We need the existing state of the | |
2074 | * nexthops/nhlfes at this point so we know what to delete. | |
2075 | */ | |
2076 | if (start_count > 0 && end_count == 0) { | |
2077 | /* Inform other lfibs */ | |
2078 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2079 | } | |
2080 | ||
2081 | /* | |
2082 | * Now we take a second pass and bring the zebra | |
2083 | * nexthop state into sync with the forwarding-plane state. | |
2084 | */ | |
2085 | ctx_list = dplane_ctx_get_nhlfe_list(ctx); | |
2086 | update_nhlfes_from_ctx(&lsp->nhlfe_list, ctx_list); | |
2087 | ||
2088 | ctx_list = dplane_ctx_get_backup_nhlfe_list(ctx); | |
2089 | update_nhlfes_from_ctx(&lsp->backup_nhlfe_list, ctx_list); | |
2090 | ||
188a00e0 | 2091 | if (end_count > 0) { |
104e3ad9 | 2092 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2093 | |
2094 | if (changed_p) | |
2095 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2096 | ||
2097 | } else { | |
104e3ad9 MS |
2098 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2099 | clear_nhlfe_installed(lsp); | |
2100 | } | |
2101 | ||
2102 | done: | |
2103 | dplane_ctx_fini(&ctx); | |
2104 | } | |
2105 | ||
a64448ba DS |
2106 | /* |
2107 | * Install dynamic LSP entry. | |
2108 | */ | |
d62a17ae | 2109 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2110 | struct route_entry *re) | |
a64448ba | 2111 | { |
d62a17ae | 2112 | struct route_table *table; |
2113 | zebra_fec_t *fec; | |
a64448ba | 2114 | |
d62a17ae | 2115 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2116 | if (!table) | |
2117 | return -1; | |
a64448ba | 2118 | |
d62a17ae | 2119 | /* See if there is a configured label binding for this FEC. */ |
2120 | fec = fec_find(table, &rn->p); | |
2121 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2122 | return 0; | |
a64448ba | 2123 | |
d62a17ae | 2124 | /* We cannot install a label forwarding entry if local label is the |
2125 | * implicit-null label. | |
2126 | */ | |
70e98a7f | 2127 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2128 | return 0; |
a64448ba | 2129 | |
d62a17ae | 2130 | if (lsp_install(zvrf, fec->label, rn, re)) |
2131 | return -1; | |
a64448ba | 2132 | |
d62a17ae | 2133 | return 0; |
a64448ba DS |
2134 | } |
2135 | ||
2136 | /* | |
2137 | * Uninstall dynamic LSP entry, if any. | |
2138 | */ | |
d62a17ae | 2139 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2140 | struct route_entry *re) | |
a64448ba | 2141 | { |
d62a17ae | 2142 | struct route_table *table; |
2143 | zebra_fec_t *fec; | |
a64448ba | 2144 | |
d62a17ae | 2145 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2146 | if (!table) | |
2147 | return -1; | |
a64448ba | 2148 | |
d62a17ae | 2149 | /* See if there is a configured label binding for this FEC. */ |
2150 | fec = fec_find(table, &rn->p); | |
2151 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2152 | return 0; | |
a64448ba | 2153 | |
d62a17ae | 2154 | /* Uninstall always removes all dynamic NHLFEs. */ |
2155 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2156 | } |
2157 | ||
d4cb23d7 | 2158 | /* |
cd4bb96f MS |
2159 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2160 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 MS |
2161 | */ |
2162 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2163 | enum lsp_types_t lsp_type, | |
2164 | enum nexthop_types_t gtype, | |
963a9803 | 2165 | const union g_addr *gate, |
d4cb23d7 | 2166 | ifindex_t ifindex, |
5065db0a | 2167 | uint8_t num_labels, |
cd4bb96f | 2168 | const mpls_label_t *out_labels) |
d4cb23d7 MS |
2169 | { |
2170 | /* Just a public pass-through to the internal implementation */ | |
5065db0a | 2171 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
cc1b9746 | 2172 | out_labels, false /*backup*/); |
d4cb23d7 MS |
2173 | } |
2174 | ||
cd4bb96f MS |
2175 | /* |
2176 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2177 | * This path only changes the LSP object - nothing is scheduled for | |
2178 | * processing, for example. | |
2179 | */ | |
2180 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nhlfe(zebra_lsp_t *lsp, | |
2181 | enum lsp_types_t lsp_type, | |
2182 | enum nexthop_types_t gtype, | |
963a9803 | 2183 | const union g_addr *gate, |
cd4bb96f MS |
2184 | ifindex_t ifindex, |
2185 | uint8_t num_labels, | |
2186 | const mpls_label_t *out_labels) | |
2187 | { | |
2188 | /* Just a public pass-through to the internal implementation */ | |
cc1b9746 MS |
2189 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2190 | out_labels, true); | |
cd4bb96f MS |
2191 | } |
2192 | ||
2193 | /* | |
2194 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2195 | */ | |
2196 | zebra_nhlfe_t *zebra_mpls_lsp_add_nh(zebra_lsp_t *lsp, | |
2197 | enum lsp_types_t lsp_type, | |
2198 | const struct nexthop *nh) | |
2199 | { | |
2200 | zebra_nhlfe_t *nhlfe; | |
2201 | ||
2202 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2203 | return NULL; | |
2204 | ||
2205 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
cc1b9746 MS |
2206 | nh->nh_label->num_labels, nh->nh_label->label, |
2207 | false /*backup*/); | |
cd4bb96f MS |
2208 | |
2209 | return nhlfe; | |
2210 | } | |
2211 | ||
2212 | /* | |
2213 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2214 | * return the newly-added object. | |
2215 | */ | |
2216 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nh(zebra_lsp_t *lsp, | |
2217 | enum lsp_types_t lsp_type, | |
2218 | const struct nexthop *nh) | |
2219 | { | |
2220 | zebra_nhlfe_t *nhlfe; | |
2221 | ||
2222 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2223 | return NULL; | |
2224 | ||
cc1b9746 | 2225 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, |
cd4bb96f | 2226 | nh->ifindex, nh->nh_label->num_labels, |
cc1b9746 | 2227 | nh->nh_label->label, true); |
cd4bb96f MS |
2228 | |
2229 | return nhlfe; | |
2230 | } | |
2231 | ||
d4cb23d7 MS |
2232 | /* |
2233 | * Free an allocated NHLFE | |
2234 | */ | |
cd4bb96f | 2235 | void zebra_mpls_nhlfe_free(zebra_nhlfe_t *nhlfe) |
d4cb23d7 MS |
2236 | { |
2237 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2238 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2239 | } |
2240 | ||
5aba114a DS |
2241 | /* |
2242 | * Registration from a client for the label binding for a FEC. If a binding | |
2243 | * already exists, it is informed to the client. | |
28d58fd7 | 2244 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2245 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2246 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2247 | * is acceptable. If no label index then just register the specified label. |
2248 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2249 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2250 | */ |
d62a17ae | 2251 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2252 | uint32_t label, uint32_t label_index, |
2253 | struct zserv *client) | |
d62a17ae | 2254 | { |
2255 | struct route_table *table; | |
2256 | zebra_fec_t *fec; | |
57592a53 AD |
2257 | bool new_client; |
2258 | bool label_change = false; | |
d7c0a89a | 2259 | uint32_t old_label; |
57592a53 AD |
2260 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2261 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2262 | |
2263 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2264 | if (!table) | |
2265 | return -1; | |
2266 | ||
57592a53 AD |
2267 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2268 | flog_err( | |
2269 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
b467b4b4 DS |
2270 | "Rejecting FEC register for %pFX with both label %u and Label Index %u specified, client %s", |
2271 | p, label, label_index, | |
57592a53 AD |
2272 | zebra_route_string(client->proto)); |
2273 | return -1; | |
2274 | } | |
2275 | ||
d62a17ae | 2276 | /* Locate FEC */ |
2277 | fec = fec_find(table, p); | |
2278 | if (!fec) { | |
57592a53 | 2279 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2280 | if (!fec) { |
af4c2728 | 2281 | flog_err( |
e914ccbe | 2282 | EC_ZEBRA_FEC_ADD_FAILED, |
b467b4b4 DS |
2283 | "Failed to add FEC %pFX upon register, client %s", |
2284 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2285 | return -1; |
2286 | } | |
2287 | ||
2288 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2289 | new_client = true; |
d62a17ae | 2290 | } else { |
57592a53 AD |
2291 | /* Check if the FEC has been statically defined in the config */ |
2292 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2293 | /* Client may register same FEC with different label index. */ |
2294 | new_client = | |
2295 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2296 | if (!new_client && fec->label_index == label_index |
2297 | && fec->label == label) | |
d62a17ae | 2298 | /* Duplicate register */ |
2299 | return 0; | |
2300 | ||
57592a53 | 2301 | /* Save current label, update the FEC */ |
d62a17ae | 2302 | old_label = fec->label; |
2303 | fec->label_index = label_index; | |
2304 | } | |
2305 | ||
2306 | if (new_client) | |
2307 | listnode_add(fec->client_list, client); | |
2308 | ||
2309 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2310 | zlog_debug("FEC %pFX label%s %u %s by client %s%s", p, |
57592a53 AD |
2311 | have_label_index ? " index" : "", |
2312 | have_label_index ? label_index : label, | |
2313 | new_client ? "registered" : "updated", | |
2314 | zebra_route_string(client->proto), | |
2315 | is_configured_fec | |
2316 | ? ", but using statically configured label" | |
2317 | : ""); | |
2318 | ||
2319 | /* If not a statically configured FEC, derive the local label | |
2320 | * from label index or use the provided label | |
d62a17ae | 2321 | */ |
57592a53 AD |
2322 | if (!is_configured_fec) { |
2323 | if (have_label_index) | |
2324 | fec_derive_label_from_index(zvrf, fec); | |
2325 | else | |
2326 | fec->label = label; | |
d62a17ae | 2327 | |
2328 | /* If no label change, exit. */ | |
2329 | if (fec->label == old_label) | |
2330 | return 0; | |
2331 | ||
57592a53 | 2332 | label_change = true; |
d62a17ae | 2333 | } |
2334 | ||
2335 | /* If new client or label change, update client and install or uninstall | |
2336 | * label forwarding entry as needed. | |
2337 | */ | |
2338 | /* Inform client of label, if needed. */ | |
2339 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2340 | if (IS_ZEBRA_DEBUG_MPLS) | |
2341 | zlog_debug("Update client label %u", fec->label); | |
2342 | fec_send(fec, client); | |
2343 | } | |
2344 | ||
2345 | if (new_client || label_change) | |
2346 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2347 | ||
2348 | return 0; | |
5aba114a DS |
2349 | } |
2350 | ||
2351 | /* | |
2352 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2353 | * itself is deleted if no other registered clients exist and there is no | |
2354 | * label bound to the FEC. | |
2355 | */ | |
d62a17ae | 2356 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2357 | struct zserv *client) | |
5aba114a | 2358 | { |
d62a17ae | 2359 | struct route_table *table; |
2360 | zebra_fec_t *fec; | |
5aba114a | 2361 | |
d62a17ae | 2362 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2363 | if (!table) | |
2364 | return -1; | |
5aba114a | 2365 | |
d62a17ae | 2366 | fec = fec_find(table, p); |
2367 | if (!fec) { | |
e914ccbe | 2368 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
2dbe669b DA |
2369 | "Failed to find FEC %pFX upon unregister, client %s", |
2370 | p, zebra_route_string(client->proto)); | |
d62a17ae | 2371 | return -1; |
2372 | } | |
5aba114a | 2373 | |
d62a17ae | 2374 | listnode_delete(fec->client_list, client); |
2375 | ||
2376 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2377 | zlog_debug("FEC %pFX unregistered by client %s", p, |
d62a17ae | 2378 | zebra_route_string(client->proto)); |
2379 | ||
2380 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2381 | * deleting, see if any LSP needs to be uninstalled. | |
2382 | */ | |
2383 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2384 | && list_isempty(fec->client_list)) { | |
2385 | mpls_label_t old_label = fec->label; | |
2386 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2387 | fec_change_update_lsp(zvrf, fec, old_label); | |
2388 | fec_del(fec); | |
2389 | } | |
5aba114a | 2390 | |
d62a17ae | 2391 | return 0; |
5aba114a DS |
2392 | } |
2393 | ||
2394 | /* | |
2395 | * Cleanup any FECs registered by this client. | |
2396 | */ | |
453844ab | 2397 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2398 | { |
453844ab | 2399 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2400 | struct route_node *rn; |
2401 | zebra_fec_t *fec; | |
2402 | struct listnode *node; | |
2403 | struct zserv *fec_client; | |
2404 | int af; | |
2405 | ||
2406 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2407 | if (zvrf->fec_table[af] == NULL) | |
2408 | continue; | |
2409 | ||
2410 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2411 | rn = route_next(rn)) { | |
2412 | fec = rn->info; | |
2413 | if (!fec || list_isempty(fec->client_list)) | |
2414 | continue; | |
2415 | ||
2416 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2417 | fec_client)) { | |
2418 | if (fec_client == client) { | |
2419 | listnode_delete(fec->client_list, | |
2420 | fec_client); | |
2421 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2422 | && list_isempty(fec->client_list)) | |
2423 | fec_del(fec); | |
2424 | break; | |
2425 | } | |
2426 | } | |
2427 | } | |
2428 | } | |
5aba114a | 2429 | |
d62a17ae | 2430 | return 0; |
5aba114a DS |
2431 | } |
2432 | ||
651105b5 RW |
2433 | struct lsp_uninstall_args { |
2434 | struct hash *lsp_table; | |
2435 | enum lsp_types_t type; | |
2436 | }; | |
2437 | ||
2438 | /* | |
2439 | * Cleanup MPLS labels registered by this client. | |
2440 | */ | |
2441 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2442 | { | |
2443 | struct vrf *vrf; | |
2444 | struct zebra_vrf *zvrf; | |
2445 | ||
2446 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2447 | struct lsp_uninstall_args args; | |
2448 | ||
2449 | zvrf = vrf->info; | |
2450 | if (!zvrf) | |
2451 | continue; | |
2452 | ||
2453 | /* Cleanup LSPs. */ | |
2454 | args.lsp_table = zvrf->lsp_table; | |
2455 | args.type = lsp_type_from_re_type(client->proto); | |
2456 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2457 | &args); | |
2458 | ||
2459 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2460 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2461 | lsp_type_from_re_type(client->proto)); | |
2462 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2463 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2464 | } |
2465 | ||
2466 | return 0; | |
2467 | } | |
2468 | ||
f31e084c DS |
2469 | /* |
2470 | * Return FEC (if any) to which this label is bound. | |
2471 | * Note: Only works for per-prefix binding and when the label is not | |
2472 | * implicit-null. | |
2473 | * TODO: Currently walks entire table, can optimize later with another | |
2474 | * hash.. | |
2475 | */ | |
d62a17ae | 2476 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2477 | mpls_label_t label) | |
2478 | { | |
2479 | struct route_node *rn; | |
2480 | zebra_fec_t *fec; | |
2481 | int af; | |
2482 | ||
2483 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2484 | if (zvrf->fec_table[af] == NULL) | |
2485 | continue; | |
2486 | ||
2487 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2488 | rn = route_next(rn)) { | |
2489 | if (!rn->info) | |
2490 | continue; | |
2491 | fec = rn->info; | |
2492 | if (fec->label == label) | |
2493 | return fec; | |
2494 | } | |
2495 | } | |
f31e084c | 2496 | |
d62a17ae | 2497 | return NULL; |
f31e084c DS |
2498 | } |
2499 | ||
2500 | /* | |
2501 | * Inform if specified label is currently bound to a FEC or not. | |
2502 | */ | |
d62a17ae | 2503 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2504 | { |
d62a17ae | 2505 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2506 | } |
2507 | ||
2508 | /* | |
5aba114a | 2509 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2510 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2511 | * label forwarding entry. | |
9d303b37 | 2512 | */ |
d62a17ae | 2513 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2514 | mpls_label_t in_label) | |
2515 | { | |
2516 | struct route_table *table; | |
2517 | zebra_fec_t *fec; | |
d62a17ae | 2518 | mpls_label_t old_label; |
2519 | int ret = 0; | |
2520 | ||
2521 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2522 | if (!table) | |
2523 | return -1; | |
2524 | ||
d62a17ae | 2525 | /* Update existing FEC or create a new one. */ |
2526 | fec = fec_find(table, p); | |
2527 | if (!fec) { | |
2528 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2529 | MPLS_INVALID_LABEL_INDEX); | |
2530 | if (!fec) { | |
e914ccbe | 2531 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
2dbe669b | 2532 | "Failed to add FEC %pFX upon config", p); |
d62a17ae | 2533 | return -1; |
2534 | } | |
2535 | ||
2536 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2537 | zlog_debug("Add fec %pFX label %u", p, in_label); |
d62a17ae | 2538 | } else { |
2539 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2540 | if (fec->label == in_label) | |
2541 | /* Duplicate config */ | |
2542 | return 0; | |
2543 | ||
2544 | /* Label change, update clients. */ | |
2545 | old_label = fec->label; | |
2546 | if (IS_ZEBRA_DEBUG_MPLS) | |
b467b4b4 | 2547 | zlog_debug("Update fec %pFX new label %u", p, in_label); |
d62a17ae | 2548 | |
2549 | fec->label = in_label; | |
2550 | fec_update_clients(fec); | |
2551 | ||
2552 | /* Update label forwarding entries appropriately */ | |
2553 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2554 | } | |
2555 | ||
2556 | return ret; | |
f31e084c DS |
2557 | } |
2558 | ||
2559 | /* | |
5aba114a DS |
2560 | * Remove static FEC to label binding. If there are no clients registered |
2561 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2562 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2563 | * client may need to be updated with derived label. | |
f31e084c | 2564 | */ |
d62a17ae | 2565 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2566 | { | |
2567 | struct route_table *table; | |
2568 | zebra_fec_t *fec; | |
2569 | mpls_label_t old_label; | |
d62a17ae | 2570 | |
2571 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2572 | if (!table) | |
2573 | return -1; | |
2574 | ||
2575 | fec = fec_find(table, p); | |
2576 | if (!fec) { | |
e914ccbe | 2577 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
b467b4b4 | 2578 | "Failed to find FEC %pFX upon delete", p); |
d62a17ae | 2579 | return -1; |
2580 | } | |
2581 | ||
2582 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2dbe669b | 2583 | zlog_debug("Delete fec %pFX label %u label index %u", p, |
57592a53 | 2584 | fec->label, fec->label_index); |
d62a17ae | 2585 | } |
2586 | ||
2587 | old_label = fec->label; | |
2588 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2589 | fec->label = MPLS_INVALID_LABEL; | |
2590 | ||
2591 | /* If no client exists, just delete the FEC. */ | |
2592 | if (list_isempty(fec->client_list)) { | |
2593 | fec_del(fec); | |
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* Derive the local label (from label index) or reset it. */ | |
2598 | fec_derive_label_from_index(zvrf, fec); | |
2599 | ||
2600 | /* If there is a label change, update clients. */ | |
2601 | if (fec->label == old_label) | |
2602 | return 0; | |
2603 | fec_update_clients(fec); | |
2604 | ||
2605 | /* Update label forwarding entries appropriately */ | |
2606 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2607 | } |
2608 | ||
2609 | /* | |
2610 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2611 | */ | |
d62a17ae | 2612 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2613 | { |
d62a17ae | 2614 | struct route_node *rn; |
2615 | int af; | |
2616 | zebra_fec_t *fec; | |
d62a17ae | 2617 | int write = 0; |
f31e084c | 2618 | |
d62a17ae | 2619 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2620 | if (zvrf->fec_table[af] == NULL) | |
2621 | continue; | |
f31e084c | 2622 | |
d62a17ae | 2623 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2624 | rn = route_next(rn)) { | |
2625 | if (!rn->info) | |
2626 | continue; | |
f31e084c | 2627 | |
d62a17ae | 2628 | char lstr[BUFSIZ]; |
2629 | fec = rn->info; | |
f31e084c | 2630 | |
d62a17ae | 2631 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2632 | continue; | |
f31e084c | 2633 | |
d62a17ae | 2634 | write = 1; |
2dbe669b | 2635 | vty_out(vty, "mpls label bind %pFX %s\n", &rn->p, |
d62a17ae | 2636 | label2str(fec->label, lstr, BUFSIZ)); |
2637 | } | |
2638 | } | |
f31e084c | 2639 | |
d62a17ae | 2640 | return write; |
f31e084c DS |
2641 | } |
2642 | ||
2643 | /* | |
2644 | * Display MPLS FEC to label binding (VTY command handler). | |
2645 | */ | |
d62a17ae | 2646 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2647 | { |
d62a17ae | 2648 | struct route_node *rn; |
2649 | int af; | |
f31e084c | 2650 | |
d62a17ae | 2651 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2652 | if (zvrf->fec_table[af] == NULL) | |
2653 | continue; | |
f31e084c | 2654 | |
d62a17ae | 2655 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2656 | rn = route_next(rn)) { | |
2657 | if (!rn->info) | |
2658 | continue; | |
2659 | fec_print(rn->info, vty); | |
2660 | } | |
2661 | } | |
f31e084c DS |
2662 | } |
2663 | ||
2664 | /* | |
2665 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2666 | */ | |
d62a17ae | 2667 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2668 | struct prefix *p) | |
f31e084c | 2669 | { |
d62a17ae | 2670 | struct route_table *table; |
2671 | struct route_node *rn; | |
f31e084c | 2672 | |
d62a17ae | 2673 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2674 | if (!table) | |
2675 | return; | |
f31e084c | 2676 | |
d62a17ae | 2677 | apply_mask(p); |
2678 | rn = route_node_lookup(table, p); | |
2679 | if (!rn) | |
2680 | return; | |
f31e084c | 2681 | |
d62a17ae | 2682 | route_unlock_node(rn); |
2683 | if (!rn->info) | |
2684 | return; | |
f31e084c | 2685 | |
d62a17ae | 2686 | fec_print(rn->info, vty); |
f31e084c DS |
2687 | } |
2688 | ||
f2e7f4eb MS |
2689 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2690 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2691 | { |
2692 | struct nhg_hash_entry *nhe; | |
2693 | ||
f2e7f4eb | 2694 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2695 | |
5463ce26 | 2696 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2697 | } |
2698 | ||
f2e7f4eb MS |
2699 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2700 | enum lsp_types_t type, | |
2701 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2702 | { |
f2e7f4eb MS |
2703 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2704 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2705 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2706 | nexthop_del_labels(nexthop); |
2707 | else | |
2708 | return false; | |
2709 | ||
2710 | return true; | |
2711 | } | |
2712 | ||
f2e7f4eb MS |
2713 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2714 | struct prefix *prefix, uint8_t route_type, | |
2715 | unsigned short route_instance) | |
d62a17ae | 2716 | { |
2717 | struct route_table *table; | |
2718 | struct route_node *rn; | |
2719 | struct route_entry *re; | |
2720 | struct nexthop *nexthop; | |
f2e7f4eb | 2721 | struct nhg_hash_entry *new_nhe; |
da137142 | 2722 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2723 | |
2724 | /* Lookup table. */ | |
da137142 | 2725 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2726 | if (!table) |
2727 | return -1; | |
2728 | ||
2729 | /* Lookup existing route */ | |
2730 | rn = route_node_get(table, prefix); | |
a2addae8 | 2731 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2732 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2733 | continue; | |
e132dea0 | 2734 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2735 | break; |
88d88a9c | 2736 | } |
d62a17ae | 2737 | if (re == NULL) |
2738 | return -1; | |
2739 | ||
da137142 | 2740 | /* |
f2e7f4eb MS |
2741 | * Nexthops are now shared by multiple routes, so we have to make |
2742 | * a local copy, modify the copy, then update the route. | |
da137142 | 2743 | */ |
f2e7f4eb | 2744 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2745 | |
f2e7f4eb MS |
2746 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2747 | nexthop_del_labels(nexthop); | |
2748 | ||
2749 | /* Update backup routes/nexthops also, if present. */ | |
2750 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2751 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2752 | nexthop = nexthop->next) | |
2753 | nexthop_del_labels(nexthop); | |
2754 | } | |
2755 | ||
2756 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2757 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2758 | ||
68110c42 MS |
2759 | /* This will create (or ref) a new nhe, so we will discard the local |
2760 | * temporary nhe | |
2761 | */ | |
f2e7f4eb MS |
2762 | mpls_zebra_nhe_update(re, afi, new_nhe); |
2763 | ||
2764 | zebra_nhg_free(new_nhe); | |
2765 | ||
2766 | rib_queue_add(rn); | |
2767 | ||
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | /* | |
2772 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2773 | * update its labels according to 'add_p', and return 'true' if successful. | |
2774 | */ | |
2775 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2776 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2777 | { | |
2778 | bool found = false, success = false; | |
2779 | struct nexthop *nexthop; | |
2780 | ||
2781 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2782 | switch (nexthop->type) { |
2783 | case NEXTHOP_TYPE_IPV4: | |
2784 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2785 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2786 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2787 | continue; |
f2e7f4eb MS |
2788 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2789 | &znh->gate.ipv4)) | |
d62a17ae | 2790 | continue; |
2791 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2792 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2793 | continue; |
f2e7f4eb | 2794 | |
8f77d0ee | 2795 | found = true; |
f2e7f4eb MS |
2796 | |
2797 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2798 | break; | |
2799 | ||
2800 | success = true; | |
8f77d0ee | 2801 | break; |
d62a17ae | 2802 | case NEXTHOP_TYPE_IPV6: |
2803 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2804 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2805 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2806 | continue; |
f2e7f4eb MS |
2807 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2808 | &znh->gate.ipv6)) | |
d62a17ae | 2809 | continue; |
2810 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2811 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2812 | continue; |
f2e7f4eb | 2813 | |
8f77d0ee | 2814 | found = true; |
f2e7f4eb MS |
2815 | |
2816 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2817 | break; | |
2818 | success = true; | |
8f77d0ee | 2819 | break; |
d62a17ae | 2820 | default: |
2821 | break; | |
2822 | } | |
f2e7f4eb MS |
2823 | |
2824 | if (found) | |
2825 | break; | |
d62a17ae | 2826 | } |
d62a17ae | 2827 | |
f2e7f4eb MS |
2828 | return success; |
2829 | } | |
19474c9c | 2830 | |
f2e7f4eb MS |
2831 | /* |
2832 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2833 | * using zapi message info. | |
2834 | * There are several changes that need to be made, in several zebra | |
2835 | * data structures, so we want to do all the work required at once. | |
2836 | */ | |
2837 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2838 | const struct zapi_labels *zl) | |
2839 | { | |
2840 | int i, counter, ret = 0; | |
2dbe669b | 2841 | char buf[NEXTHOP_STRLEN]; |
f2e7f4eb MS |
2842 | const struct zapi_nexthop *znh; |
2843 | struct route_table *table; | |
2844 | struct route_node *rn = NULL; | |
2845 | struct route_entry *re = NULL; | |
2846 | struct nhg_hash_entry *new_nhe = NULL; | |
2847 | bool found; | |
2848 | afi_t afi = AFI_IP; | |
2849 | const struct prefix *prefix = NULL; | |
2850 | struct hash *lsp_table; | |
2851 | zebra_ile_t tmp_ile; | |
2852 | zebra_lsp_t *lsp = NULL; | |
19474c9c | 2853 | |
f2e7f4eb MS |
2854 | /* Prep LSP for add case */ |
2855 | if (add_p) { | |
2856 | /* Lookup table. */ | |
2857 | lsp_table = zvrf->lsp_table; | |
2858 | if (!lsp_table) | |
2859 | return -1; | |
2860 | ||
2861 | /* Find or create LSP object */ | |
2862 | tmp_ile.in_label = zl->local_label; | |
2863 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2864 | if (!lsp) | |
2865 | return -1; | |
da137142 SW |
2866 | } |
2867 | ||
f2e7f4eb MS |
2868 | /* Prep for route/FEC update if requested */ |
2869 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2870 | prefix = &zl->route.prefix; | |
da137142 | 2871 | |
f2e7f4eb | 2872 | afi = family2afi(prefix->family); |
ce549947 | 2873 | |
f2e7f4eb MS |
2874 | /* Lookup table. */ |
2875 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2876 | if (table) { | |
2877 | /* Lookup existing route */ | |
2878 | rn = route_node_get(table, prefix); | |
2879 | RNODE_FOREACH_RE(rn, re) { | |
2880 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2881 | continue; | |
2882 | if (re->type == zl->route.type && | |
2883 | re->instance == zl->route.instance) | |
2884 | break; | |
2885 | } | |
2886 | } | |
ea6b290b | 2887 | |
f2e7f4eb MS |
2888 | if (re) { |
2889 | /* | |
2890 | * Copy over current nexthops into a temporary group. | |
2891 | * We can't just change the values here since the nhgs | |
2892 | * are shared and if the labels change, we'll need | |
2893 | * to find or create a new nhg. We need to create | |
2894 | * a whole temporary group, make changes to it, | |
2895 | * then attach that to the route. | |
2896 | */ | |
2897 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2898 | |
f2e7f4eb MS |
2899 | } else { |
2900 | /* | |
2901 | * The old version of the zapi code | |
2902 | * attempted to manage LSPs before trying to | |
2903 | * find a route/FEC, so we'll continue that way. | |
2904 | */ | |
2dbe669b DA |
2905 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) |
2906 | zlog_debug( | |
2907 | "%s: FTN update requested: no route for prefix %pFX", | |
2908 | __func__, prefix); | |
f2e7f4eb MS |
2909 | } |
2910 | } | |
2911 | ||
2912 | /* | |
2913 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2914 | */ | |
2915 | ||
2916 | counter = 0; | |
2917 | for (i = 0; i < zl->nexthop_num; i++) { | |
2918 | ||
2919 | znh = &zl->nexthops[i]; | |
2920 | ||
2921 | /* Attempt LSP update */ | |
2922 | if (add_p) | |
2923 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2924 | else | |
2925 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2926 | zl->local_label, znh->type, | |
cc1b9746 MS |
2927 | &znh->gate, znh->ifindex, |
2928 | false); | |
f2e7f4eb MS |
2929 | if (ret < 0) { |
2930 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2931 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2932 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
2933 | __func__, (add_p ? "" : "un"), | |
2934 | zl->local_label, buf); | |
2935 | } | |
ea6b290b | 2936 | continue; |
f2e7f4eb MS |
2937 | } |
2938 | ||
2939 | /* Attempt route/FEC update if requested */ | |
2940 | if (re == NULL) | |
2941 | continue; | |
2942 | ||
2943 | /* Search the route's nexthops for a match, and update it. */ | |
2944 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
2945 | znh); | |
2946 | if (found) { | |
2947 | counter++; | |
2948 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
2949 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
2950 | zlog_debug( |
2951 | "%s: Unable to update FEC: prefix %pFX, label %u, znh %s", | |
2952 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb | 2953 | } |
ea6b290b | 2954 | } |
ea6b290b | 2955 | |
f2e7f4eb MS |
2956 | /* |
2957 | * Process backup LSPs/nexthop entries also. We associate backup | |
2958 | * LSP info with backup nexthops. | |
2959 | */ | |
2960 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
2961 | goto znh_done; | |
19474c9c | 2962 | |
f2e7f4eb | 2963 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 2964 | |
f2e7f4eb | 2965 | znh = &zl->backup_nexthops[i]; |
19474c9c | 2966 | |
f2e7f4eb MS |
2967 | if (add_p) |
2968 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
2969 | else | |
cc1b9746 MS |
2970 | ret = mpls_lsp_uninstall(zvrf, zl->type, |
2971 | zl->local_label, | |
2972 | znh->type, &znh->gate, | |
2973 | znh->ifindex, true); | |
f2e7f4eb MS |
2974 | |
2975 | if (ret < 0) { | |
2976 | if (IS_ZEBRA_DEBUG_RECV || | |
2977 | IS_ZEBRA_DEBUG_MPLS) { | |
2978 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2979 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
2980 | __func__, (add_p ? "" : "un"), | |
2981 | zl->local_label, buf); | |
2982 | } | |
2983 | continue; | |
2984 | } | |
19474c9c | 2985 | |
f2e7f4eb MS |
2986 | /* Attempt backup nexthop/FEC update if requested */ |
2987 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
2988 | continue; | |
19474c9c | 2989 | |
f2e7f4eb MS |
2990 | /* Search the route's backup nexthops for a match |
2991 | * and update it. | |
2992 | */ | |
2993 | found = ftn_update_znh(add_p, zl->type, | |
2994 | new_nhe->backup_info->nhe->nhg.nexthop, | |
2995 | znh); | |
2996 | if (found) { | |
2997 | counter++; | |
2998 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
2999 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
2dbe669b DA |
3000 | zlog_debug( |
3001 | "%s: Unable to update backup FEC: prefix %pFX, label %u, znh %s", | |
3002 | __func__, prefix, zl->local_label, buf); | |
f2e7f4eb MS |
3003 | } |
3004 | } | |
ea6b290b | 3005 | |
f2e7f4eb MS |
3006 | znh_done: |
3007 | ||
3008 | /* | |
3009 | * If we made changes, update the route, and schedule it | |
3010 | * for rib processing | |
3011 | */ | |
3012 | if (re != NULL && counter > 0) { | |
3013 | assert(rn != NULL); | |
3014 | ||
3015 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3016 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3017 | ||
3018 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3019 | ||
3020 | rib_queue_add(rn); | |
3021 | } | |
3022 | ||
3023 | if (new_nhe) | |
3024 | zebra_nhg_free(new_nhe); | |
3025 | ||
3026 | return ret; | |
ea6b290b RW |
3027 | } |
3028 | ||
ce549947 RW |
3029 | /* |
3030 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3031 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3032 | * the out-label for an existing NHLFE (update case). | |
3033 | */ | |
cd4bb96f MS |
3034 | static zebra_nhlfe_t * |
3035 | lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3036 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3037 | enum nexthop_types_t gtype, const union g_addr *gate, | |
cc1b9746 | 3038 | ifindex_t ifindex, bool is_backup) |
d62a17ae | 3039 | { |
d62a17ae | 3040 | zebra_nhlfe_t *nhlfe; |
cd4bb96f | 3041 | char buf[MPLS_LABEL_STRLEN]; |
cc1b9746 | 3042 | const char *backup_str; |
e4a1ec74 | 3043 | |
cc1b9746 MS |
3044 | if (is_backup) { |
3045 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3046 | gate, ifindex); | |
3047 | backup_str = "backup "; | |
d62a17ae | 3048 | } else { |
cc1b9746 MS |
3049 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, |
3050 | ifindex); | |
3051 | backup_str = ""; | |
d62a17ae | 3052 | } |
3053 | ||
cd4bb96f MS |
3054 | if (nhlfe) { |
3055 | struct nexthop *nh = nhlfe->nexthop; | |
3056 | ||
3057 | assert(nh); | |
3058 | assert(nh->nh_label); | |
3059 | ||
3060 | /* Clear deleted flag (in case it was set) */ | |
3061 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3062 | if (nh->nh_label->num_labels == num_out_labels | |
3063 | && !memcmp(nh->nh_label->label, out_labels, | |
3064 | sizeof(mpls_label_t) * num_out_labels)) | |
3065 | /* No change */ | |
3066 | return nhlfe; | |
3067 | ||
3068 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3069 | char buf2[MPLS_LABEL_STRLEN]; | |
3070 | char buf3[MPLS_LABEL_STRLEN]; | |
3071 | ||
3072 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3073 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3074 | sizeof(buf2), 0); | |
3075 | mpls_label2str(nh->nh_label->num_labels, | |
3076 | nh->nh_label->label, buf3, sizeof(buf3), | |
3077 | 0); | |
3078 | ||
cc1b9746 MS |
3079 | zlog_debug("LSP in-label %u type %d %snexthop %s out-label(s) changed to %s (old %s)", |
3080 | lsp->ile.in_label, type, backup_str, buf, | |
3081 | buf2, buf3); | |
cd4bb96f MS |
3082 | } |
3083 | ||
3084 | /* Update out label(s), trigger processing. */ | |
3085 | if (nh->nh_label->num_labels == num_out_labels) | |
3086 | memcpy(nh->nh_label->label, out_labels, | |
3087 | sizeof(mpls_label_t) * num_out_labels); | |
3088 | else { | |
3089 | nexthop_del_labels(nh); | |
3090 | nexthop_add_labels(nh, type, num_out_labels, | |
3091 | out_labels); | |
3092 | } | |
3093 | } else { | |
3094 | /* Add LSP entry to this nexthop */ | |
cc1b9746 MS |
3095 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3096 | num_out_labels, out_labels, is_backup); | |
cd4bb96f MS |
3097 | if (!nhlfe) |
3098 | return NULL; | |
3099 | ||
3100 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3101 | char buf2[MPLS_LABEL_STRLEN]; | |
3102 | ||
3103 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3104 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3105 | sizeof(buf2), 0); | |
3106 | ||
cc1b9746 MS |
3107 | zlog_debug("Add LSP in-label %u type %d %snexthop %s out-label(s) %s", |
3108 | lsp->ile.in_label, type, backup_str, buf, | |
3109 | buf2); | |
cd4bb96f MS |
3110 | } |
3111 | ||
3112 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3113 | } | |
3114 | ||
3115 | /* Mark NHLFE, queue LSP for processing. */ | |
3116 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3117 | ||
3118 | return nhlfe; | |
3119 | } | |
3120 | ||
3121 | /* | |
3122 | * Install an LSP and forwarding entry; used primarily | |
301a687a | 3123 | * from vrf zapi message processing. |
cd4bb96f MS |
3124 | */ |
3125 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3126 | mpls_label_t in_label, uint8_t num_out_labels, | |
3127 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3128 | const union g_addr *gate, ifindex_t ifindex) | |
3129 | { | |
3130 | struct hash *lsp_table; | |
3131 | zebra_ile_t tmp_ile; | |
3132 | zebra_lsp_t *lsp; | |
3133 | zebra_nhlfe_t *nhlfe; | |
3134 | ||
3135 | /* Lookup table. */ | |
3136 | lsp_table = zvrf->lsp_table; | |
3137 | if (!lsp_table) | |
3138 | return -1; | |
3139 | ||
3140 | /* Find or create LSP object */ | |
3141 | tmp_ile.in_label = in_label; | |
3142 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3143 | if (!lsp) | |
3144 | return -1; | |
3145 | ||
3146 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
cc1b9746 | 3147 | gate, ifindex, false /*backup*/); |
cd4bb96f MS |
3148 | if (nhlfe == NULL) |
3149 | return -1; | |
3150 | ||
3151 | /* Queue LSP for processing. */ | |
3152 | if (lsp_processq_add(lsp)) | |
3153 | return -1; | |
3154 | ||
3155 | return 0; | |
3156 | } | |
3157 | ||
3158 | /* | |
3159 | * Install or replace NHLFE, using info from zapi nexthop | |
3160 | */ | |
f2e7f4eb MS |
3161 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3162 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3163 | { |
cd4bb96f MS |
3164 | zebra_nhlfe_t *nhlfe; |
3165 | ||
cd4bb96f | 3166 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
cc1b9746 MS |
3167 | znh->type, &znh->gate, znh->ifindex, |
3168 | false /*backup*/); | |
cd4bb96f MS |
3169 | if (nhlfe == NULL) |
3170 | return -1; | |
3171 | ||
3172 | /* Update backup info if present */ | |
3173 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
474aebd9 MS |
3174 | if (znh->backup_num > NEXTHOP_MAX_BACKUPS) { |
3175 | nhlfe_del(nhlfe); | |
3176 | return -1; | |
3177 | } | |
3178 | ||
3179 | nhlfe->nexthop->backup_num = znh->backup_num; | |
3180 | memcpy(nhlfe->nexthop->backup_idx, znh->backup_idx, | |
3181 | znh->backup_num); | |
cd4bb96f | 3182 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); |
301a687a MS |
3183 | } else { |
3184 | /* Ensure there's no stale backup info */ | |
3185 | UNSET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3186 | nhlfe->nexthop->backup_num = 0; | |
cd4bb96f MS |
3187 | } |
3188 | ||
3189 | /* Queue LSP for processing. */ | |
3190 | if (lsp_processq_add(lsp)) | |
3191 | return -1; | |
3192 | ||
3193 | return 0; | |
3194 | } | |
3195 | ||
3196 | /* | |
3197 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3198 | */ | |
f2e7f4eb MS |
3199 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3200 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3201 | { |
cd4bb96f MS |
3202 | zebra_nhlfe_t *nhlfe; |
3203 | ||
cc1b9746 MS |
3204 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, |
3205 | znh->labels, znh->type, &znh->gate, | |
3206 | znh->ifindex, true /*backup*/); | |
cd4bb96f MS |
3207 | if (nhlfe == NULL) { |
3208 | if (IS_ZEBRA_DEBUG_MPLS) | |
3209 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3210 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3211 | return -1; |
3212 | } | |
3213 | ||
3214 | /* Queue LSP for processing. */ | |
d62a17ae | 3215 | if (lsp_processq_add(lsp)) |
3216 | return -1; | |
3217 | ||
3218 | return 0; | |
ce549947 RW |
3219 | } |
3220 | ||
31f937fb SM |
3221 | zebra_lsp_t *mpls_lsp_find(struct zebra_vrf *zvrf, mpls_label_t in_label) |
3222 | { | |
3223 | struct hash *lsp_table; | |
3224 | zebra_ile_t tmp_ile; | |
3225 | ||
3226 | /* Lookup table. */ | |
3227 | lsp_table = zvrf->lsp_table; | |
3228 | if (!lsp_table) | |
3229 | return NULL; | |
3230 | ||
3231 | /* If entry is not present, exit. */ | |
3232 | tmp_ile.in_label = in_label; | |
3233 | return hash_lookup(lsp_table, &tmp_ile); | |
3234 | } | |
3235 | ||
ce549947 RW |
3236 | /* |
3237 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3238 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3239 | */ | |
d62a17ae | 3240 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3241 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
cc1b9746 MS |
3242 | const union g_addr *gate, ifindex_t ifindex, |
3243 | bool backup_p) | |
d62a17ae | 3244 | { |
3245 | struct hash *lsp_table; | |
3246 | zebra_ile_t tmp_ile; | |
3247 | zebra_lsp_t *lsp; | |
3248 | zebra_nhlfe_t *nhlfe; | |
cc1b9746 | 3249 | char buf[NEXTHOP_STRLEN]; |
4a2a5236 | 3250 | bool schedule_lsp = false; |
d62a17ae | 3251 | |
3252 | /* Lookup table. */ | |
3253 | lsp_table = zvrf->lsp_table; | |
3254 | if (!lsp_table) | |
3255 | return -1; | |
3256 | ||
3257 | /* If entry is not present, exit. */ | |
3258 | tmp_ile.in_label = in_label; | |
3259 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3260 | if (!lsp) | |
3261 | return 0; | |
cc1b9746 MS |
3262 | |
3263 | if (backup_p) | |
3264 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, | |
3265 | gate, ifindex); | |
3266 | else | |
3267 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, | |
3268 | ifindex); | |
d62a17ae | 3269 | if (!nhlfe) |
3270 | return 0; | |
3271 | ||
3272 | if (IS_ZEBRA_DEBUG_MPLS) { | |
43a9f66c | 3273 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3274 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", |
3275 | in_label, type, buf, nhlfe->flags); | |
3276 | } | |
3277 | ||
4a2a5236 MS |
3278 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) || |
3279 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) | |
3280 | schedule_lsp = true; | |
3281 | ||
d62a17ae | 3282 | /* Mark NHLFE for delete or directly delete, as appropriate. */ |
4a2a5236 | 3283 | if (schedule_lsp) { |
d62a17ae | 3284 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); |
4a2a5236 MS |
3285 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); |
3286 | ||
3287 | if (IS_ZEBRA_DEBUG_MPLS) | |
3288 | zlog_debug("Schedule LSP in-label %u flags 0x%x", | |
3289 | lsp->ile.in_label, lsp->flags); | |
d62a17ae | 3290 | if (lsp_processq_add(lsp)) |
3291 | return -1; | |
3292 | } else { | |
3293 | nhlfe_del(nhlfe); | |
3294 | ||
3295 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3296 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3297 | } |
3298 | return 0; | |
ce549947 RW |
3299 | } |
3300 | ||
ea6b290b RW |
3301 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3302 | mpls_label_t in_label) | |
3303 | { | |
3304 | struct hash *lsp_table; | |
3305 | zebra_ile_t tmp_ile; | |
3306 | zebra_lsp_t *lsp; | |
3307 | ||
3308 | /* Lookup table. */ | |
3309 | lsp_table = zvrf->lsp_table; | |
3310 | if (!lsp_table) | |
3311 | return -1; | |
3312 | ||
3313 | /* If entry is not present, exit. */ | |
3314 | tmp_ile.in_label = in_label; | |
3315 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3316 | if (!lsp) | |
3317 | return 0; | |
3318 | ||
3319 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3320 | } | |
3321 | ||
ce549947 | 3322 | /* |
651105b5 | 3323 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3324 | * If no other NHLFEs exist, the entry would be deleted. |
3325 | */ | |
651105b5 | 3326 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3327 | { |
651105b5 | 3328 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 3329 | zebra_lsp_t *lsp; |
3330 | struct hash *lsp_table; | |
ce549947 | 3331 | |
e3b78da8 | 3332 | lsp = (zebra_lsp_t *)bucket->data; |
ee70f629 | 3333 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3334 | return; |
ce549947 | 3335 | |
651105b5 | 3336 | lsp_table = args->lsp_table; |
d62a17ae | 3337 | if (!lsp_table) |
3338 | return; | |
ce549947 | 3339 | |
651105b5 | 3340 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3341 | } |
3342 | ||
3343 | /* | |
651105b5 RW |
3344 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3345 | * LSP type. | |
ce549947 | 3346 | */ |
651105b5 RW |
3347 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3348 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3349 | { |
3350 | struct route_table *table; | |
3351 | struct route_node *rn; | |
3352 | struct route_entry *re; | |
3353 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3354 | struct nexthop_group *nhg; |
3355 | bool update; | |
d62a17ae | 3356 | |
3357 | /* Process routes of interested address-families. */ | |
3358 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3359 | if (!table) | |
3360 | return; | |
3361 | ||
3362 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3363 | update = false; |
3364 | ||
a2addae8 | 3365 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3366 | struct nhg_hash_entry *new_nhe; |
da137142 | 3367 | |
f2e7f4eb | 3368 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3369 | |
f2e7f4eb MS |
3370 | nhg = &new_nhe->nhg; |
3371 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3372 | nexthop = nexthop->next) { |
651105b5 | 3373 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3374 | continue; |
3375 | ||
d62a17ae | 3376 | nexthop_del_labels(nexthop); |
3377 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3378 | SET_FLAG(re->status, | |
332ad713 | 3379 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3380 | update = true; |
3381 | } | |
3382 | ||
3383 | /* Check for backup info and update that also */ | |
3384 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3385 | if (nhg != NULL) { | |
3386 | for (nexthop = nhg->nexthop; nexthop; | |
3387 | nexthop = nexthop->next) { | |
3388 | if (nexthop->nh_label_type != lsp_type) | |
3389 | continue; | |
3390 | ||
3391 | nexthop_del_labels(nexthop); | |
3392 | SET_FLAG(re->status, | |
3393 | ROUTE_ENTRY_CHANGED); | |
3394 | SET_FLAG(re->status, | |
3395 | ROUTE_ENTRY_LABELS_CHANGED); | |
3396 | update = true; | |
3397 | } | |
d62a17ae | 3398 | } |
da137142 | 3399 | |
19474c9c | 3400 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3401 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3402 | |
f2e7f4eb | 3403 | zebra_nhg_free(new_nhe); |
407c87a6 | 3404 | } |
d62a17ae | 3405 | |
3406 | if (update) | |
3407 | rib_queue_add(rn); | |
3408 | } | |
ce549947 RW |
3409 | } |
3410 | ||
1c1cf002 | 3411 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3412 | /* |
3413 | * Check that the label values used in LSP creation are consistent. The | |
3414 | * main criteria is that if there is ECMP, the label operation must still | |
3415 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3416 | * to current HW restrictions. | |
3417 | */ | |
d62a17ae | 3418 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3419 | mpls_label_t in_label, | |
3420 | mpls_label_t out_label, | |
3421 | enum nexthop_types_t gtype, | |
3422 | union g_addr *gate, ifindex_t ifindex) | |
3423 | { | |
3424 | struct hash *slsp_table; | |
3425 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3426 | zebra_lsp_t *lsp; |
3427 | zebra_nhlfe_t *nhlfe; | |
3428 | const struct nexthop *nh; | |
d62a17ae | 3429 | |
3430 | /* Lookup table. */ | |
3431 | slsp_table = zvrf->slsp_table; | |
3432 | if (!slsp_table) | |
3433 | return 0; | |
3434 | ||
3435 | /* If entry is not present, exit. */ | |
3436 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3437 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3438 | if (!lsp) | |
d62a17ae | 3439 | return 1; |
3440 | ||
608a57c0 MS |
3441 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3442 | gtype, gate, ifindex); | |
3443 | if (nhlfe) { | |
3444 | nh = nhlfe->nexthop; | |
3445 | ||
3446 | if (nh == NULL || nh->nh_label == NULL) | |
3447 | return 0; | |
3448 | ||
3449 | if (nh->nh_label->label[0] == out_label) | |
d62a17ae | 3450 | return 1; |
3451 | ||
3452 | /* If not only NHLFE, cannot allow label change. */ | |
608a57c0 MS |
3453 | if (nhlfe != nhlfe_list_first(&lsp->nhlfe_list) || |
3454 | nhlfe_list_next(&lsp->nhlfe_list, nhlfe) != NULL) | |
d62a17ae | 3455 | return 0; |
3456 | } else { | |
3457 | /* If other NHLFEs exist, label operation must match. */ | |
608a57c0 MS |
3458 | nhlfe = nhlfe_list_first(&lsp->nhlfe_list); |
3459 | if (nhlfe != NULL) { | |
d62a17ae | 3460 | int cur_op, new_op; |
3461 | ||
608a57c0 MS |
3462 | nh = nhlfe->nexthop; |
3463 | ||
3464 | if (nh == NULL || nh->nh_label == NULL) | |
3465 | return 0; | |
3466 | ||
3467 | cur_op = (nh->nh_label->label[0] == | |
ee70f629 | 3468 | MPLS_LABEL_IMPLICIT_NULL); |
70e98a7f | 3469 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3470 | if (cur_op != new_op) |
3471 | return 0; | |
3472 | } | |
3473 | } | |
3474 | ||
3475 | /* Label values are good. */ | |
3476 | return 1; | |
7758e3f3 | 3477 | } |
1c1cf002 | 3478 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3479 | |
3480 | /* | |
3481 | * Add static LSP entry. This may be the first entry for this incoming label | |
3482 | * or an additional nexthop; an existing entry may also have outgoing label | |
3483 | * changed. | |
3484 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3485 | * NHLFEs). | |
3486 | */ | |
d62a17ae | 3487 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3488 | mpls_label_t out_label, | |
3489 | enum nexthop_types_t gtype, union g_addr *gate, | |
3490 | ifindex_t ifindex) | |
3491 | { | |
3492 | struct hash *slsp_table; | |
3493 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3494 | zebra_lsp_t *lsp; |
3495 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3496 | char buf[BUFSIZ]; |
3497 | ||
3498 | /* Lookup table. */ | |
3499 | slsp_table = zvrf->slsp_table; | |
3500 | if (!slsp_table) | |
3501 | return -1; | |
3502 | ||
e4a1ec74 | 3503 | /* Find or create LSP. */ |
d62a17ae | 3504 | tmp_ile.in_label = in_label; |
608a57c0 MS |
3505 | lsp = hash_get(slsp_table, &tmp_ile, lsp_alloc); |
3506 | if (!lsp) | |
d62a17ae | 3507 | return -1; |
e4a1ec74 | 3508 | |
608a57c0 MS |
3509 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, gtype, gate, |
3510 | ifindex); | |
3511 | if (nhlfe) { | |
3512 | struct nexthop *nh = nhlfe->nexthop; | |
3513 | ||
3514 | assert(nh); | |
3515 | assert(nh->nh_label); | |
3516 | ||
3517 | /* Compare existing nexthop */ | |
3518 | if (nh->nh_label->num_labels == 1 && | |
3519 | nh->nh_label->label[0] == out_label) | |
d62a17ae | 3520 | /* No change */ |
3521 | return 0; | |
3522 | ||
3523 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3524 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3525 | zlog_debug( |
3efd0893 | 3526 | "Upd static LSP in-label %u nexthop %s out-label %u (old %u)", |
608a57c0 MS |
3527 | in_label, buf, out_label, |
3528 | nh->nh_label->label[0]); | |
3529 | } | |
3530 | if (nh->nh_label->num_labels == 1) | |
3531 | nh->nh_label->label[0] = out_label; | |
3532 | else { | |
3533 | nexthop_del_labels(nh); | |
3534 | nexthop_add_labels(nh, ZEBRA_LSP_STATIC, 1, &out_label); | |
d62a17ae | 3535 | } |
608a57c0 | 3536 | |
d62a17ae | 3537 | } else { |
3538 | /* Add static LSP entry to this nexthop */ | |
608a57c0 MS |
3539 | nhlfe = nhlfe_add(lsp, ZEBRA_LSP_STATIC, gtype, gate, |
3540 | ifindex, 1, &out_label, false /*backup*/); | |
3541 | if (!nhlfe) | |
d62a17ae | 3542 | return -1; |
3543 | ||
3544 | if (IS_ZEBRA_DEBUG_MPLS) { | |
608a57c0 | 3545 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3546 | zlog_debug( |
3547 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3548 | in_label, buf, out_label); | |
3549 | } | |
3550 | } | |
3551 | ||
3552 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3553 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3554 | gtype, gate, ifindex)) | |
d62a17ae | 3555 | return -1; |
3556 | ||
3557 | return 0; | |
7758e3f3 | 3558 | } |
3559 | ||
3560 | /* | |
3561 | * Delete static LSP entry. This may be the delete of one particular | |
3562 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3563 | * all NHLFEs). | |
3564 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3565 | * LSP configuration. | |
3566 | */ | |
d62a17ae | 3567 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3568 | enum nexthop_types_t gtype, union g_addr *gate, | |
3569 | ifindex_t ifindex) | |
3570 | { | |
3571 | struct hash *slsp_table; | |
3572 | zebra_ile_t tmp_ile; | |
608a57c0 MS |
3573 | zebra_lsp_t *lsp; |
3574 | zebra_nhlfe_t *nhlfe; | |
d62a17ae | 3575 | |
3576 | /* Lookup table. */ | |
3577 | slsp_table = zvrf->slsp_table; | |
3578 | if (!slsp_table) | |
3579 | return -1; | |
3580 | ||
3581 | /* If entry is not present, exit. */ | |
3582 | tmp_ile.in_label = in_label; | |
608a57c0 MS |
3583 | lsp = hash_lookup(slsp_table, &tmp_ile); |
3584 | if (!lsp) | |
d62a17ae | 3585 | return 0; |
3586 | ||
3587 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3588 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3589 | if (IS_ZEBRA_DEBUG_MPLS) | |
3590 | zlog_debug("Del static LSP in-label %u", in_label); | |
3591 | ||
3592 | /* Uninstall entire LSP from the main table. */ | |
3593 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3594 | ||
3595 | /* Delete all static NHLFEs */ | |
608a57c0 MS |
3596 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3597 | nhlfe_del(nhlfe); | |
3598 | } | |
d62a17ae | 3599 | } else { |
3600 | /* Find specific NHLFE, exit if not found. */ | |
608a57c0 MS |
3601 | nhlfe = nhlfe_find(&lsp->nhlfe_list, ZEBRA_LSP_STATIC, |
3602 | gtype, gate, ifindex); | |
3603 | if (!nhlfe) | |
d62a17ae | 3604 | return 0; |
3605 | ||
3606 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3607 | char buf[BUFSIZ]; | |
608a57c0 | 3608 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
d62a17ae | 3609 | zlog_debug("Del static LSP in-label %u nexthop %s", |
3610 | in_label, buf); | |
3611 | } | |
3612 | ||
3613 | /* Uninstall LSP from the main table. */ | |
3614 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
cc1b9746 | 3615 | gate, ifindex, false); |
d62a17ae | 3616 | |
3617 | /* Delete static LSP NHLFE */ | |
608a57c0 | 3618 | nhlfe_del(nhlfe); |
d62a17ae | 3619 | } |
3620 | ||
3621 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
608a57c0 MS |
3622 | * above. |
3623 | */ | |
3624 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) { | |
3625 | lsp = hash_release(slsp_table, &tmp_ile); | |
3626 | XFREE(MTYPE_LSP, lsp); | |
d62a17ae | 3627 | } |
3628 | ||
3629 | return 0; | |
7758e3f3 | 3630 | } |
3631 | ||
40c7bdb0 | 3632 | /* |
3633 | * Schedule all MPLS label forwarding entries for processing. | |
3634 | * Called upon changes that may affect one or more of them such as | |
3635 | * interface or nexthop state changes. | |
3636 | */ | |
d62a17ae | 3637 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3638 | { |
d62a17ae | 3639 | if (!zvrf) |
3640 | return; | |
3641 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3642 | } |
3643 | ||
3ab18ff2 | 3644 | /* |
3645 | * Display MPLS label forwarding table for a specific LSP | |
3646 | * (VTY command handler). | |
3647 | */ | |
d62a17ae | 3648 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3649 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3650 | { |
d62a17ae | 3651 | struct hash *lsp_table; |
3652 | zebra_lsp_t *lsp; | |
3653 | zebra_ile_t tmp_ile; | |
3654 | json_object *json = NULL; | |
3ab18ff2 | 3655 | |
d62a17ae | 3656 | /* Lookup table. */ |
3657 | lsp_table = zvrf->lsp_table; | |
3658 | if (!lsp_table) | |
3659 | return; | |
3ab18ff2 | 3660 | |
d62a17ae | 3661 | /* If entry is not present, exit. */ |
3662 | tmp_ile.in_label = label; | |
3663 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3664 | if (!lsp) | |
3665 | return; | |
3ab18ff2 | 3666 | |
d62a17ae | 3667 | if (use_json) { |
3668 | json = lsp_json(lsp); | |
9d303b37 DL |
3669 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3670 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3671 | json_object_free(json); |
3672 | } else | |
a29c2887 | 3673 | lsp_print(vty, lsp); |
3ab18ff2 | 3674 | } |
3675 | ||
3676 | /* | |
3677 | * Display MPLS label forwarding table (VTY command handler). | |
3678 | */ | |
d62a17ae | 3679 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3680 | bool use_json) |
d62a17ae | 3681 | { |
3682 | char buf[BUFSIZ]; | |
3683 | json_object *json = NULL; | |
3684 | zebra_lsp_t *lsp = NULL; | |
3685 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3686 | struct listnode *node = NULL; |
3687 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3688 | ||
3689 | if (use_json) { | |
3690 | json = json_object_new_object(); | |
3691 | ||
3692 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3693 | json_object_object_add( | |
43a9f66c MS |
3694 | json, label2str(lsp->ile.in_label, buf, |
3695 | sizeof(buf)), | |
d62a17ae | 3696 | lsp_json(lsp)); |
3697 | ||
9d303b37 DL |
3698 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3699 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3700 | json_object_free(json); |
3701 | } else { | |
a971aeb6 RW |
3702 | struct ttable *tt; |
3703 | ||
3704 | /* Prepare table. */ | |
3705 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3706 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3707 | tt->style.cell.rpad = 2; | |
3708 | tt->style.corner = '+'; | |
3709 | ttable_restyle(tt); | |
3710 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3711 | |
3712 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3713 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3714 | struct nexthop *nexthop; |
3715 | const char *out_label_str; | |
3716 | char nh_buf[NEXTHOP_STRLEN]; | |
3717 | ||
d62a17ae | 3718 | nexthop = nhlfe->nexthop; |
3719 | ||
3720 | switch (nexthop->type) { | |
996c9314 | 3721 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3722 | struct zebra_ns *zns; |
b9abd9ad DS |
3723 | struct interface *ifp; |
3724 | ||
86f07f44 PG |
3725 | zns = zebra_ns_lookup(NS_DEFAULT); |
3726 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3727 | zns, nexthop->ifindex); |
3728 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3729 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3730 | break; |
3731 | } | |
d62a17ae | 3732 | case NEXTHOP_TYPE_IPV4: |
3733 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3734 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3735 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3736 | break; |
3737 | case NEXTHOP_TYPE_IPV6: | |
3738 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3739 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3740 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3741 | break; |
3742 | default: | |
3743 | break; | |
3744 | } | |
3745 | ||
b9abd9ad | 3746 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3747 | out_label_str = mpls_label2str( |
3748 | nexthop->nh_label->num_labels, | |
3749 | &nexthop->nh_label->label[0], | |
43a9f66c | 3750 | buf, sizeof(buf), 1); |
b9abd9ad | 3751 | else |
a971aeb6 RW |
3752 | out_label_str = "-"; |
3753 | ||
3754 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3755 | lsp->ile.in_label, | |
3756 | nhlfe_type2str(nhlfe->type), | |
3757 | nh_buf, out_label_str); | |
d62a17ae | 3758 | } |
3759 | } | |
3760 | ||
a971aeb6 RW |
3761 | /* Dump the generated table. */ |
3762 | if (tt->nrows > 1) { | |
3763 | char *table = ttable_dump(tt, "\n"); | |
3764 | vty_out(vty, "%s\n", table); | |
3765 | XFREE(MTYPE_TMP, table); | |
3766 | } | |
3767 | ttable_del(tt); | |
d62a17ae | 3768 | } |
3769 | ||
6a154c88 | 3770 | list_delete(&lsp_list); |
3ab18ff2 | 3771 | } |
3772 | ||
608a57c0 MS |
3773 | /* |
3774 | * Create printable string for static LSP configuration. | |
3775 | */ | |
3776 | static char *nhlfe_config_str(const zebra_nhlfe_t *nhlfe, char *buf, int size) | |
3777 | { | |
3778 | const struct nexthop *nh; | |
3779 | ||
3780 | nh = nhlfe->nexthop; | |
3781 | ||
3782 | buf[0] = '\0'; | |
3783 | switch (nh->type) { | |
3784 | case NEXTHOP_TYPE_IPV4: | |
3785 | inet_ntop(AF_INET, &nh->gate.ipv4, buf, size); | |
3786 | break; | |
3787 | case NEXTHOP_TYPE_IPV6: | |
3788 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3789 | inet_ntop(AF_INET6, &nh->gate.ipv6, buf, size); | |
3790 | if (nh->ifindex) | |
3791 | strlcat(buf, | |
3792 | ifindex2ifname(nh->ifindex, VRF_DEFAULT), | |
3793 | size); | |
3794 | break; | |
3795 | default: | |
3796 | break; | |
3797 | } | |
3798 | ||
3799 | return buf; | |
3800 | } | |
3801 | ||
7758e3f3 | 3802 | /* |
3803 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3804 | */ | |
d62a17ae | 3805 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3806 | { | |
608a57c0 MS |
3807 | zebra_lsp_t *lsp; |
3808 | zebra_nhlfe_t *nhlfe; | |
3809 | struct nexthop *nh; | |
d62a17ae | 3810 | struct listnode *node; |
3811 | struct list *slsp_list = | |
608a57c0 | 3812 | hash_get_sorted_list(zvrf->slsp_table, lsp_cmp); |
d62a17ae | 3813 | |
608a57c0 MS |
3814 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, lsp)) { |
3815 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
0af35d90 | 3816 | char buf[BUFSIZ]; |
d62a17ae | 3817 | char lstr[30]; |
3818 | ||
608a57c0 MS |
3819 | nh = nhlfe->nexthop; |
3820 | if (nh == NULL || nh->nh_label == NULL) | |
3821 | continue; | |
3822 | ||
3823 | nhlfe_config_str(nhlfe, buf, sizeof(buf)); | |
3824 | ||
3825 | switch (nh->nh_label->label[0]) { | |
70e98a7f DS |
3826 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3827 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3828 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3829 | break; | |
70e98a7f | 3830 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3831 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3832 | break; | |
3833 | default: | |
772270f3 | 3834 | snprintf(lstr, sizeof(lstr), "%u", |
608a57c0 | 3835 | nh->nh_label->label[0]); |
d62a17ae | 3836 | break; |
3837 | } | |
3838 | ||
608a57c0 | 3839 | vty_out(vty, "mpls lsp %u %s %s\n", lsp->ile.in_label, |
d62a17ae | 3840 | buf, lstr); |
3841 | } | |
3842 | } | |
b78b820d | 3843 | |
6a154c88 | 3844 | list_delete(&slsp_list); |
d62a17ae | 3845 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3846 | } |
3847 | ||
1b6d5c7e VV |
3848 | /* |
3849 | * Add/update global label block. | |
3850 | */ | |
d7c0a89a QY |
3851 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3852 | uint32_t end_label) | |
1b6d5c7e | 3853 | { |
d62a17ae | 3854 | zvrf->mpls_srgb.start_label = start_label; |
3855 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3856 | |
d62a17ae | 3857 | /* Evaluate registered FECs to see if any get a label or not. */ |
3858 | fec_evaluate(zvrf); | |
3859 | return 0; | |
1b6d5c7e VV |
3860 | } |
3861 | ||
3862 | /* | |
3863 | * Delete global label block. | |
3864 | */ | |
d62a17ae | 3865 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3866 | { |
d62a17ae | 3867 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3868 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3869 | |
d62a17ae | 3870 | /* Process registered FECs to clear their local label, if needed. */ |
3871 | fec_evaluate(zvrf); | |
3872 | return 0; | |
1b6d5c7e VV |
3873 | } |
3874 | ||
3875 | /* | |
3876 | * Display MPLS global label block configuration (VTY command handler). | |
3877 | */ | |
d62a17ae | 3878 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3879 | { |
d62a17ae | 3880 | if (zvrf->mpls_srgb.start_label == 0) |
3881 | return 0; | |
1b6d5c7e | 3882 | |
d62a17ae | 3883 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3884 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3885 | vty_out(vty, "mpls label global-block %u %u\n", | |
3886 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3887 | } | |
1b6d5c7e | 3888 | |
d62a17ae | 3889 | return 1; |
1b6d5c7e VV |
3890 | } |
3891 | ||
84915b0a | 3892 | /* |
3893 | * Called when VRF becomes inactive, cleans up information but keeps | |
3894 | * the table itself. | |
84915b0a | 3895 | */ |
3896 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3897 | { | |
c2e10644 MS |
3898 | struct zebra_vrf *def_zvrf; |
3899 | afi_t afi; | |
3900 | ||
3901 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3902 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3903 | else { | |
3904 | /* | |
3905 | * For other vrfs, we try to remove associated LSPs; we locate | |
3906 | * the LSPs in the default vrf. | |
3907 | */ | |
3908 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3909 | ||
3910 | /* At shutdown, the default may be gone already */ | |
3911 | if (def_zvrf == NULL) | |
3912 | return; | |
3913 | ||
3914 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3915 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3916 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3917 | } | |
3918 | } | |
84915b0a | 3919 | } |
3920 | ||
40c7bdb0 | 3921 | /* |
3922 | * Called upon process exiting, need to delete LSP forwarding | |
3923 | * entries from the kernel. | |
3924 | * NOTE: Currently supported only for default VRF. | |
3925 | */ | |
d62a17ae | 3926 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3927 | { |
d62a17ae | 3928 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3929 | hash_clean(zvrf->lsp_table, NULL); | |
3930 | hash_free(zvrf->lsp_table); | |
3931 | hash_clean(zvrf->slsp_table, NULL); | |
3932 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3933 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3934 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3935 | } |
3936 | ||
7758e3f3 | 3937 | /* |
3938 | * Allocate MPLS tables for this VRF and do other initialization. | |
3939 | * NOTE: Currently supported only for default VRF. | |
3940 | */ | |
d62a17ae | 3941 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3942 | { |
d62a17ae | 3943 | if (!zvrf) |
3944 | return; | |
996c9314 LB |
3945 | zvrf->slsp_table = |
3946 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3947 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3948 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3949 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3950 | zvrf->mpls_flags = 0; | |
3951 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3952 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3953 | } |
3954 | ||
3955 | /* | |
3956 | * Global MPLS initialization. | |
3957 | */ | |
d62a17ae | 3958 | void zebra_mpls_init(void) |
7758e3f3 | 3959 | { |
d62a17ae | 3960 | mpls_enabled = 0; |
33c32282 | 3961 | |
d62a17ae | 3962 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3963 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3964 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3965 | return; |
3966 | } | |
fe6c7157 | 3967 | |
2561d12e | 3968 | if (!mpls_processq_init()) |
d62a17ae | 3969 | mpls_enabled = 1; |
453844ab | 3970 | |
21ccc0cf | 3971 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 3972 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 3973 | } |