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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" | |
b78b820d | 37 | #include "lib/json.h" |
7758e3f3 | 38 | |
39 | #include "zebra/rib.h" | |
40 | #include "zebra/rt.h" | |
86f07f44 | 41 | #include "zebra/interface.h" |
7758e3f3 | 42 | #include "zebra/zserv.h" |
43 | #include "zebra/redistribute.h" | |
44 | #include "zebra/debug.h" | |
45 | #include "zebra/zebra_memory.h" | |
46 | #include "zebra/zebra_vrf.h" | |
47 | #include "zebra/zebra_mpls.h" | |
43e52561 | 48 | #include "zebra/zebra_errors.h" |
7758e3f3 | 49 | |
d62a17ae | 50 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object") |
51 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object") | |
52 | DEFINE_MTYPE_STATIC(ZEBRA, SLSP, "MPLS static LSP config") | |
53 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object") | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE, "MPLS static nexthop object") | |
55 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE_IFNAME, "MPLS static nexthop ifname") | |
7758e3f3 | 56 | |
fe6c7157 RW |
57 | int mpls_enabled; |
58 | ||
7758e3f3 | 59 | /* Default rtm_table for all clients */ |
60 | extern struct zebra_t zebrad; | |
61 | ||
62 | /* static function declarations */ | |
f31e084c | 63 | |
d62a17ae | 64 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
65 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
66 | zebra_fec_t *fec); | |
d62a17ae | 67 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
68 | struct route_node *rn, struct route_entry *re); | |
69 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
70 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
71 | mpls_label_t old_label); | |
72 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
73 | static void fec_update_clients(zebra_fec_t *fec); | |
74 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
75 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
76 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
77 | mpls_label_t label, uint32_t flags, |
78 | uint32_t label_index); | |
d62a17ae | 79 | static int fec_del(zebra_fec_t *fec); |
80 | ||
81 | static unsigned int label_hash(void *p); | |
82 | static int label_cmp(const void *p1, const void *p2); | |
83 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, | |
84 | struct nexthop *nexthop); | |
85 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
86 | struct nexthop *nexthop); | |
87 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
88 | ||
89 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp); | |
90 | static void lsp_uninstall_from_kernel(struct hash_backet *backet, void *ctxt); | |
91 | static void lsp_schedule(struct hash_backet *backet, void *ctxt); | |
92 | static wq_item_status lsp_process(struct work_queue *wq, void *data); | |
93 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
94 | static void lsp_processq_complete(struct work_queue *wq); | |
95 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
96 | static void *lsp_alloc(void *p); | |
97 | ||
98 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size); | |
99 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, | |
100 | union g_addr *gate, ifindex_t ifindex); | |
101 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
102 | enum nexthop_types_t gtype, union g_addr *gate, | |
103 | ifindex_t ifindex); | |
104 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
105 | enum nexthop_types_t gtype, union g_addr *gate, | |
106 | ifindex_t ifindex, mpls_label_t out_label); | |
107 | static int nhlfe_del(zebra_nhlfe_t *snhlfe); | |
108 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, | |
8ecdb26e | 109 | struct mpls_label_stack *nh_label); |
d62a17ae | 110 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
111 | enum lsp_types_t type); | |
112 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
113 | mpls_label_t in_label); | |
114 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty); | |
115 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt); | |
116 | static void *slsp_alloc(void *p); | |
117 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, | |
118 | union g_addr *gate, ifindex_t ifindex); | |
119 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, | |
120 | enum nexthop_types_t gtype, | |
121 | union g_addr *gate, ifindex_t ifindex); | |
122 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, | |
123 | enum nexthop_types_t gtype, | |
124 | union g_addr *gate, ifindex_t ifindex, | |
125 | mpls_label_t out_label); | |
126 | static int snhlfe_del(zebra_snhlfe_t *snhlfe); | |
127 | static int snhlfe_del_all(zebra_slsp_t *slsp); | |
128 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size); | |
129 | static int mpls_processq_init(struct zebra_t *zebra); | |
7758e3f3 | 130 | |
131 | ||
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 | ||
142 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
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 | } | |
150 | } | |
151 | ||
a64448ba DS |
152 | /* |
153 | * Install label forwarding entry based on labeled-route entry. | |
154 | */ | |
d62a17ae | 155 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
156 | struct route_node *rn, struct route_entry *re) | |
157 | { | |
158 | struct hash *lsp_table; | |
159 | zebra_ile_t tmp_ile; | |
160 | zebra_lsp_t *lsp; | |
161 | zebra_nhlfe_t *nhlfe; | |
162 | struct nexthop *nexthop; | |
163 | enum lsp_types_t lsp_type; | |
164 | char buf[BUFSIZ]; | |
165 | int added, changed; | |
166 | ||
167 | /* Lookup table. */ | |
168 | lsp_table = zvrf->lsp_table; | |
169 | if (!lsp_table) | |
170 | return -1; | |
171 | ||
172 | lsp_type = lsp_type_from_re_type(re->type); | |
173 | added = changed = 0; | |
174 | ||
175 | /* Locate or allocate LSP entry. */ | |
176 | tmp_ile.in_label = label; | |
177 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
178 | if (!lsp) | |
179 | return -1; | |
180 | ||
181 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
182 | * recursive nexthops right now, because intermediate hops won't | |
183 | * understand | |
184 | * the label advertised by the recursive nexthop (plus we don't have the | |
185 | * logic yet to push multiple labels). | |
186 | */ | |
7ee30f28 | 187 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 188 | /* Skip inactive and recursive entries. */ |
189 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
190 | continue; | |
191 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
192 | continue; | |
193 | ||
194 | nhlfe = nhlfe_find(lsp, lsp_type, nexthop->type, &nexthop->gate, | |
195 | nexthop->ifindex); | |
196 | if (nhlfe) { | |
197 | /* Clear deleted flag (in case it was set) */ | |
198 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
199 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
200 | /* No change */ | |
201 | continue; | |
202 | ||
203 | ||
204 | if (IS_ZEBRA_DEBUG_MPLS) { | |
205 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
206 | zlog_debug( | |
207 | "LSP in-label %u type %d nexthop %s " | |
208 | "out-label changed", | |
209 | lsp->ile.in_label, lsp_type, buf); | |
210 | } | |
211 | ||
212 | /* Update out label, trigger processing. */ | |
213 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
214 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
215 | changed++; | |
216 | } else { | |
217 | /* Add LSP entry to this nexthop */ | |
218 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
219 | &nexthop->gate, nexthop->ifindex, | |
220 | nexthop->nh_label->label[0]); | |
221 | if (!nhlfe) | |
222 | return -1; | |
223 | ||
224 | if (IS_ZEBRA_DEBUG_MPLS) { | |
225 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
226 | zlog_debug( | |
227 | "Add LSP in-label %u type %d nexthop %s " | |
228 | "out-label %u", | |
229 | lsp->ile.in_label, lsp_type, buf, | |
230 | nexthop->nh_label->label[0]); | |
231 | } | |
232 | ||
233 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
234 | ||
235 | /* Mark NHLFE as changed. */ | |
236 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
237 | added++; | |
238 | } | |
239 | } | |
240 | ||
241 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
242 | * case), delete the LSP entry; this case results in somewhat ugly | |
243 | * logging. | |
244 | */ | |
245 | if (added || changed) { | |
246 | if (lsp_processq_add(lsp)) | |
247 | return -1; | |
248 | } else if (!lsp->nhlfe_list | |
249 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
250 | if (IS_ZEBRA_DEBUG_MPLS) | |
251 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
252 | lsp->ile.in_label, lsp->flags); | |
253 | ||
254 | lsp = hash_release(lsp_table, &lsp->ile); | |
255 | if (lsp) | |
256 | XFREE(MTYPE_LSP, lsp); | |
257 | } | |
258 | ||
259 | return 0; | |
a64448ba DS |
260 | } |
261 | ||
262 | /* | |
263 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
264 | * NHLFEs are removed, the entire entry is deleted. | |
265 | */ | |
d62a17ae | 266 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
267 | { | |
268 | struct hash *lsp_table; | |
269 | zebra_ile_t tmp_ile; | |
270 | zebra_lsp_t *lsp; | |
271 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
272 | char buf[BUFSIZ]; | |
273 | ||
274 | /* Lookup table. */ | |
275 | lsp_table = zvrf->lsp_table; | |
276 | if (!lsp_table) | |
277 | return -1; | |
278 | ||
279 | /* If entry is not present, exit. */ | |
280 | tmp_ile.in_label = label; | |
281 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
282 | if (!lsp || !lsp->nhlfe_list) | |
283 | return 0; | |
284 | ||
285 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
286 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
287 | nhlfe_next = nhlfe->next; | |
288 | ||
289 | /* Skip static NHLFEs */ | |
290 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
291 | continue; | |
292 | ||
293 | if (IS_ZEBRA_DEBUG_MPLS) { | |
294 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
295 | zlog_debug( | |
296 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
297 | label, nhlfe->type, buf, nhlfe->flags); | |
298 | } | |
299 | ||
300 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
301 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
302 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
303 | } else { | |
304 | nhlfe_del(nhlfe); | |
305 | } | |
306 | } | |
307 | ||
308 | /* Queue LSP for processing, if needed, else delete. */ | |
309 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
310 | if (lsp_processq_add(lsp)) | |
311 | return -1; | |
312 | } else if (!lsp->nhlfe_list | |
313 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
314 | if (IS_ZEBRA_DEBUG_MPLS) | |
315 | zlog_debug("Del LSP in-label %u flags 0x%x", | |
316 | lsp->ile.in_label, lsp->flags); | |
317 | ||
318 | lsp = hash_release(lsp_table, &lsp->ile); | |
319 | if (lsp) | |
320 | XFREE(MTYPE_LSP, lsp); | |
321 | } | |
322 | ||
323 | return 0; | |
a64448ba DS |
324 | } |
325 | ||
28d58fd7 VV |
326 | /* |
327 | * This function is invoked upon change to label block configuration; it | |
328 | * will walk all registered FECs with label-index and appropriately update | |
329 | * their local labels and trigger client updates. | |
330 | */ | |
d62a17ae | 331 | static void fec_evaluate(struct zebra_vrf *zvrf) |
332 | { | |
333 | struct route_node *rn; | |
334 | zebra_fec_t *fec; | |
d7c0a89a | 335 | uint32_t old_label, new_label; |
d62a17ae | 336 | int af; |
337 | char buf[BUFSIZ]; | |
338 | ||
339 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
340 | if (zvrf->fec_table[af] == NULL) | |
341 | continue; | |
342 | ||
343 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
344 | rn = route_next(rn)) { | |
345 | if ((fec = rn->info) == NULL) | |
346 | continue; | |
347 | ||
348 | /* Skip configured FECs and those without a label index. | |
349 | */ | |
350 | if (fec->flags & FEC_FLAG_CONFIGURED | |
351 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
352 | continue; | |
353 | ||
354 | if (IS_ZEBRA_DEBUG_MPLS) | |
355 | prefix2str(&rn->p, buf, BUFSIZ); | |
356 | ||
357 | /* Save old label, determine new label. */ | |
358 | old_label = fec->label; | |
359 | new_label = | |
360 | zvrf->mpls_srgb.start_label + fec->label_index; | |
361 | if (new_label >= zvrf->mpls_srgb.end_label) | |
362 | new_label = MPLS_INVALID_LABEL; | |
363 | ||
364 | /* If label has changed, update FEC and clients. */ | |
365 | if (new_label == old_label) | |
366 | continue; | |
367 | ||
368 | if (IS_ZEBRA_DEBUG_MPLS) | |
369 | zlog_debug( | |
370 | "Update fec %s new label %u upon label block", | |
371 | buf, new_label); | |
372 | ||
373 | fec->label = new_label; | |
374 | fec_update_clients(fec); | |
375 | ||
376 | /* Update label forwarding entries appropriately */ | |
377 | fec_change_update_lsp(zvrf, fec, old_label); | |
378 | } | |
379 | } | |
28d58fd7 VV |
380 | } |
381 | ||
382 | /* | |
383 | * Derive (if possible) and update the local label for the FEC based on | |
384 | * its label index. The index is "acceptable" if it falls within the | |
385 | * globally configured label block (SRGB). | |
386 | */ | |
d7c0a89a QY |
387 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
388 | zebra_fec_t *fec) | |
28d58fd7 | 389 | { |
d7c0a89a | 390 | uint32_t label; |
28d58fd7 | 391 | |
d62a17ae | 392 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
393 | && zvrf->mpls_srgb.start_label | |
394 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
395 | < zvrf->mpls_srgb.end_label)) | |
396 | fec->label = label; | |
397 | else | |
398 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 399 | |
d62a17ae | 400 | return fec->label; |
28d58fd7 VV |
401 | } |
402 | ||
a64448ba DS |
403 | /* |
404 | * There is a change for this FEC. Install or uninstall label forwarding | |
405 | * entries, as appropriate. | |
406 | */ | |
d62a17ae | 407 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
408 | mpls_label_t old_label) | |
a64448ba | 409 | { |
d62a17ae | 410 | struct route_table *table; |
411 | struct route_node *rn; | |
412 | struct route_entry *re; | |
413 | afi_t afi; | |
a64448ba | 414 | |
d62a17ae | 415 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
416 | if (old_label != MPLS_INVALID_LABEL |
417 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 418 | lsp_uninstall(zvrf, old_label); |
a64448ba | 419 | |
d62a17ae | 420 | /* Install label forwarding entry corr. to new label, if needed. */ |
421 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 422 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 423 | return 0; |
a64448ba | 424 | |
d62a17ae | 425 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
426 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
427 | if (!table) | |
428 | return 0; | |
a64448ba | 429 | |
d62a17ae | 430 | /* See if labeled route exists. */ |
431 | rn = route_node_lookup(table, &fec->rn->p); | |
432 | if (!rn) | |
433 | return 0; | |
a64448ba | 434 | |
a2addae8 | 435 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 436 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
437 | break; | |
438 | } | |
a64448ba | 439 | |
d62a17ae | 440 | if (!re || !zebra_rib_labeled_unicast(re)) |
441 | return 0; | |
a64448ba | 442 | |
d62a17ae | 443 | if (lsp_install(zvrf, fec->label, rn, re)) |
444 | return -1; | |
a64448ba | 445 | |
d62a17ae | 446 | return 0; |
a64448ba DS |
447 | } |
448 | ||
5aba114a DS |
449 | /* |
450 | * Inform about FEC to a registered client. | |
451 | */ | |
d62a17ae | 452 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 453 | { |
d62a17ae | 454 | struct stream *s; |
455 | struct route_node *rn; | |
5aba114a | 456 | |
d62a17ae | 457 | rn = fec->rn; |
5aba114a | 458 | |
d62a17ae | 459 | /* Get output stream. */ |
1002497a | 460 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 461 | |
7cf15b25 | 462 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 463 | |
d62a17ae | 464 | stream_putw(s, rn->p.family); |
465 | stream_put_prefix(s, &rn->p); | |
466 | stream_putl(s, fec->label); | |
467 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 468 | return zserv_send_message(client, s); |
5aba114a DS |
469 | } |
470 | ||
471 | /* | |
472 | * Update all registered clients about this FEC. Caller should've updated | |
473 | * FEC and ensure no duplicate updates. | |
474 | */ | |
d62a17ae | 475 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 476 | { |
d62a17ae | 477 | struct listnode *node; |
478 | struct zserv *client; | |
5aba114a | 479 | |
d62a17ae | 480 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
481 | if (IS_ZEBRA_DEBUG_MPLS) | |
482 | zlog_debug("Update client %s", | |
483 | zebra_route_string(client->proto)); | |
484 | fec_send(fec, client); | |
485 | } | |
5aba114a DS |
486 | } |
487 | ||
488 | ||
f31e084c DS |
489 | /* |
490 | * Print a FEC-label binding entry. | |
491 | */ | |
d62a17ae | 492 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
493 | { | |
494 | struct route_node *rn; | |
495 | struct listnode *node; | |
496 | struct zserv *client; | |
497 | char buf[BUFSIZ]; | |
498 | ||
499 | rn = fec->rn; | |
500 | prefix2str(&rn->p, buf, BUFSIZ); | |
501 | vty_out(vty, "%s\n", buf); | |
502 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
503 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
504 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
505 | vty_out(vty, "\n"); | |
506 | if (!list_isempty(fec->client_list)) { | |
507 | vty_out(vty, " Client list:"); | |
508 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
509 | vty_out(vty, " %s(fd %d)", | |
510 | zebra_route_string(client->proto), | |
511 | client->sock); | |
512 | vty_out(vty, "\n"); | |
513 | } | |
f31e084c DS |
514 | } |
515 | ||
516 | /* | |
517 | * Locate FEC-label binding that matches with passed info. | |
518 | */ | |
d62a17ae | 519 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 520 | { |
d62a17ae | 521 | struct route_node *rn; |
f31e084c | 522 | |
d62a17ae | 523 | apply_mask(p); |
524 | rn = route_node_lookup(table, p); | |
525 | if (!rn) | |
526 | return NULL; | |
f31e084c | 527 | |
d62a17ae | 528 | route_unlock_node(rn); |
529 | return (rn->info); | |
f31e084c DS |
530 | } |
531 | ||
532 | /* | |
5aba114a DS |
533 | * Add a FEC. This may be upon a client registering for a binding |
534 | * or when a binding is configured. | |
f31e084c | 535 | */ |
d62a17ae | 536 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
537 | mpls_label_t label, uint32_t flags, |
538 | uint32_t label_index) | |
f31e084c | 539 | { |
d62a17ae | 540 | struct route_node *rn; |
541 | zebra_fec_t *fec; | |
f31e084c | 542 | |
d62a17ae | 543 | apply_mask(p); |
f31e084c | 544 | |
d62a17ae | 545 | /* Lookup (or add) route node.*/ |
546 | rn = route_node_get(table, p); | |
547 | if (!rn) | |
548 | return NULL; | |
f31e084c | 549 | |
d62a17ae | 550 | fec = rn->info; |
f31e084c | 551 | |
d62a17ae | 552 | if (!fec) { |
553 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 554 | |
d62a17ae | 555 | rn->info = fec; |
556 | fec->rn = rn; | |
557 | fec->label = label; | |
558 | fec->client_list = list_new(); | |
559 | } else | |
560 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 561 | |
d62a17ae | 562 | fec->label_index = label_index; |
563 | fec->flags = flags; | |
f31e084c | 564 | |
d62a17ae | 565 | return fec; |
f31e084c DS |
566 | } |
567 | ||
568 | /* | |
5aba114a DS |
569 | * Delete a FEC. This may be upon the last client deregistering for |
570 | * a FEC and no binding exists or when the binding is deleted and there | |
571 | * are no registered clients. | |
f31e084c | 572 | */ |
d62a17ae | 573 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 574 | { |
acdf5e25 | 575 | list_delete_and_null(&fec->client_list); |
d62a17ae | 576 | fec->rn->info = NULL; |
577 | route_unlock_node(fec->rn); | |
578 | XFREE(MTYPE_FEC, fec); | |
579 | return 0; | |
f31e084c DS |
580 | } |
581 | ||
7758e3f3 | 582 | /* |
583 | * Hash function for label. | |
584 | */ | |
d62a17ae | 585 | static unsigned int label_hash(void *p) |
7758e3f3 | 586 | { |
d62a17ae | 587 | const zebra_ile_t *ile = p; |
7758e3f3 | 588 | |
d62a17ae | 589 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 590 | } |
591 | ||
592 | /* | |
593 | * Compare 2 LSP hash entries based on in-label. | |
594 | */ | |
d62a17ae | 595 | static int label_cmp(const void *p1, const void *p2) |
7758e3f3 | 596 | { |
d62a17ae | 597 | const zebra_ile_t *ile1 = p1; |
598 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 599 | |
d62a17ae | 600 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 601 | } |
602 | ||
40c7bdb0 | 603 | /* |
604 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
605 | * the passed flag. | |
606 | * NOTE: Looking only for connected routes right now. | |
607 | */ | |
d62a17ae | 608 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
609 | struct nexthop *nexthop) | |
40c7bdb0 | 610 | { |
d62a17ae | 611 | struct route_table *table; |
612 | struct prefix_ipv4 p; | |
613 | struct route_node *rn; | |
614 | struct route_entry *match; | |
615 | struct nexthop *match_nh; | |
40c7bdb0 | 616 | |
4a7371e9 | 617 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 618 | if (!table) |
619 | return 0; | |
40c7bdb0 | 620 | |
d62a17ae | 621 | /* Lookup nexthop in IPv4 routing table. */ |
622 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
623 | p.family = AF_INET; | |
624 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
625 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 626 | |
d62a17ae | 627 | rn = route_node_match(table, (struct prefix *)&p); |
628 | if (!rn) | |
629 | return 0; | |
40c7bdb0 | 630 | |
d62a17ae | 631 | route_unlock_node(rn); |
88d88a9c | 632 | |
d62a17ae | 633 | /* Locate a valid connected route. */ |
a2addae8 | 634 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 635 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
636 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
637 | continue; | |
638 | ||
7ee30f28 | 639 | for (match_nh = match->ng.nexthop; match_nh; |
d62a17ae | 640 | match_nh = match_nh->next) { |
641 | if (match->type == ZEBRA_ROUTE_CONNECT | |
642 | || nexthop->ifindex == match_nh->ifindex) { | |
643 | nexthop->ifindex = match_nh->ifindex; | |
644 | return 1; | |
645 | } | |
646 | } | |
88d88a9c | 647 | } |
40c7bdb0 | 648 | |
d62a17ae | 649 | return 0; |
40c7bdb0 | 650 | } |
651 | ||
652 | ||
653 | /* | |
654 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
655 | * the passed flag. | |
656 | * NOTE: Looking only for connected routes right now. | |
657 | */ | |
d62a17ae | 658 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
659 | struct nexthop *nexthop) | |
40c7bdb0 | 660 | { |
d62a17ae | 661 | struct route_table *table; |
662 | struct prefix_ipv6 p; | |
663 | struct route_node *rn; | |
664 | struct route_entry *match; | |
40c7bdb0 | 665 | |
4a7371e9 | 666 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 667 | if (!table) |
668 | return 0; | |
40c7bdb0 | 669 | |
d62a17ae | 670 | /* Lookup nexthop in IPv6 routing table. */ |
671 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
672 | p.family = AF_INET6; | |
673 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
674 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 675 | |
d62a17ae | 676 | rn = route_node_match(table, (struct prefix *)&p); |
677 | if (!rn) | |
678 | return 0; | |
40c7bdb0 | 679 | |
d62a17ae | 680 | route_unlock_node(rn); |
40c7bdb0 | 681 | |
d62a17ae | 682 | /* Locate a valid connected route. */ |
a2addae8 | 683 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 684 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
685 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
686 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
687 | break; | |
688 | } | |
40c7bdb0 | 689 | |
7ee30f28 | 690 | if (!match || !match->ng.nexthop) |
d62a17ae | 691 | return 0; |
40c7bdb0 | 692 | |
7ee30f28 | 693 | nexthop->ifindex = match->ng.nexthop->ifindex; |
d62a17ae | 694 | return 1; |
40c7bdb0 | 695 | } |
696 | ||
697 | ||
698 | /* | |
699 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
700 | * or not. | |
701 | * NOTE: Each NHLFE points to only 1 nexthop. | |
702 | */ | |
d62a17ae | 703 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
704 | { | |
705 | struct nexthop *nexthop; | |
706 | struct interface *ifp; | |
86f07f44 | 707 | struct zebra_ns *zns; |
d62a17ae | 708 | |
709 | nexthop = nhlfe->nexthop; | |
710 | if (!nexthop) // unexpected | |
711 | return 0; | |
712 | ||
713 | /* Check on nexthop based on type. */ | |
714 | switch (nexthop->type) { | |
b9abd9ad DS |
715 | case NEXTHOP_TYPE_IFINDEX: |
716 | /* | |
717 | * Lookup if this type is special. The | |
718 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
719 | * forward into a different table for | |
720 | * processing. As such this ifindex | |
721 | * passed to us may be a VRF device | |
722 | * which will not be in the default | |
723 | * VRF. So let's look in all of them | |
724 | */ | |
86f07f44 PG |
725 | zns = zebra_ns_lookup(NS_DEFAULT); |
726 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
727 | if (ifp && if_is_operative(ifp)) |
728 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
729 | else | |
730 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
731 | break; | |
d62a17ae | 732 | case NEXTHOP_TYPE_IPV4: |
733 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
734 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
735 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
736 | else | |
737 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
738 | break; | |
739 | ||
740 | case NEXTHOP_TYPE_IPV6: | |
741 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
742 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
743 | else | |
744 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
745 | break; | |
746 | ||
747 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
748 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
749 | ifp = if_lookup_by_index(nexthop->ifindex, |
750 | nexthop->vrf_id); | |
d62a17ae | 751 | if (ifp && if_is_operative(ifp)) |
752 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
753 | else | |
754 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
755 | } else { | |
756 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
757 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
758 | else | |
759 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
760 | } | |
761 | break; | |
762 | ||
763 | default: | |
764 | break; | |
765 | } | |
766 | ||
767 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 768 | } |
769 | ||
770 | /* | |
771 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
772 | * reachability and select the best. Multipath entries are also | |
773 | * marked. This is invoked when an LSP scheduled for processing (due | |
774 | * to some change) is examined. | |
775 | */ | |
d62a17ae | 776 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
777 | { | |
778 | zebra_nhlfe_t *nhlfe; | |
779 | zebra_nhlfe_t *best; | |
780 | struct nexthop *nexthop; | |
781 | int changed = 0; | |
782 | ||
783 | if (!lsp) | |
784 | return; | |
785 | ||
786 | best = NULL; | |
787 | lsp->num_ecmp = 0; | |
788 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
789 | ||
790 | /* | |
791 | * First compute the best path, after checking nexthop status. We are | |
792 | * only | |
793 | * concerned with non-deleted NHLFEs. | |
794 | */ | |
795 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
796 | /* Clear selection flags. */ | |
797 | UNSET_FLAG(nhlfe->flags, | |
798 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
799 | ||
800 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
801 | && nhlfe_nexthop_active(nhlfe)) { | |
802 | if (!best || (nhlfe->distance < best->distance)) | |
803 | best = nhlfe; | |
804 | } | |
805 | } | |
806 | ||
807 | lsp->best_nhlfe = best; | |
808 | if (!lsp->best_nhlfe) | |
809 | return; | |
810 | ||
811 | /* Mark best NHLFE as selected. */ | |
812 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
813 | ||
814 | /* | |
815 | * If best path exists, see if there is ECMP. While doing this, note if | |
816 | * a | |
817 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
818 | * still selected has a change or an installed entry is to be removed. | |
819 | */ | |
820 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
821 | int nh_chg, nh_sel, nh_inst; | |
822 | ||
823 | nexthop = nhlfe->nexthop; | |
824 | if (!nexthop) // unexpected | |
825 | continue; | |
826 | ||
827 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
828 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
829 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
830 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
831 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
832 | lsp->num_ecmp++; | |
833 | } | |
834 | ||
835 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
836 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
837 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
838 | nh_inst = | |
839 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
840 | ||
841 | if ((nh_sel && !nh_inst) | |
842 | || (nh_sel && nh_inst && nh_chg) | |
843 | || (nh_inst && !nh_sel)) | |
844 | changed = 1; | |
845 | } | |
846 | ||
847 | /* We have finished examining, clear changed flag. */ | |
848 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
849 | } | |
850 | ||
851 | if (changed) | |
852 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 853 | } |
854 | ||
855 | /* | |
856 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
857 | * process exit. | |
858 | */ | |
d62a17ae | 859 | static void lsp_uninstall_from_kernel(struct hash_backet *backet, void *ctxt) |
40c7bdb0 | 860 | { |
d62a17ae | 861 | zebra_lsp_t *lsp; |
40c7bdb0 | 862 | |
d62a17ae | 863 | lsp = (zebra_lsp_t *)backet->data; |
4a83e7a0 | 864 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
7c5d0e18 | 865 | (void)kernel_del_lsp(lsp); |
40c7bdb0 | 866 | } |
867 | ||
868 | /* | |
869 | * Schedule LSP forwarding entry for processing. Called upon changes | |
870 | * that may impact LSPs such as nexthop / connected route changes. | |
871 | */ | |
d62a17ae | 872 | static void lsp_schedule(struct hash_backet *backet, void *ctxt) |
40c7bdb0 | 873 | { |
d62a17ae | 874 | zebra_lsp_t *lsp; |
40c7bdb0 | 875 | |
d62a17ae | 876 | lsp = (zebra_lsp_t *)backet->data; |
0af35d90 | 877 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 878 | } |
879 | ||
880 | /* | |
881 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
882 | * any multipaths and update or delete from the kernel, as needed. | |
883 | */ | |
d62a17ae | 884 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
885 | { | |
886 | zebra_lsp_t *lsp; | |
887 | zebra_nhlfe_t *oldbest, *newbest; | |
888 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
889 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
890 | ||
891 | lsp = (zebra_lsp_t *)data; | |
892 | if (!lsp) // unexpected | |
893 | return WQ_SUCCESS; | |
894 | ||
895 | oldbest = lsp->best_nhlfe; | |
896 | ||
897 | /* Select best NHLFE(s) */ | |
898 | lsp_select_best_nhlfe(lsp); | |
899 | ||
900 | newbest = lsp->best_nhlfe; | |
901 | ||
902 | if (IS_ZEBRA_DEBUG_MPLS) { | |
903 | if (oldbest) | |
904 | nhlfe2str(oldbest, buf, BUFSIZ); | |
905 | if (newbest) | |
906 | nhlfe2str(newbest, buf2, BUFSIZ); | |
907 | zlog_debug( | |
908 | "Process LSP in-label %u oldbest %s newbest %s " | |
909 | "flags 0x%x ecmp# %d", | |
910 | lsp->ile.in_label, oldbest ? buf : "NULL", | |
911 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
912 | } | |
913 | ||
914 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
915 | /* Not already installed */ | |
916 | if (newbest) { | |
2b63430c DS |
917 | |
918 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
7c5d0e18 DS |
919 | switch (kernel_add_lsp(lsp)) { |
920 | case DP_REQUEST_QUEUED: | |
af4c2728 | 921 | flog_err( |
e914ccbe | 922 | EC_ZEBRA_DP_INVALID_RC, |
43e52561 | 923 | "No current DataPlane interfaces can return this, please fix"); |
7c5d0e18 DS |
924 | break; |
925 | case DP_REQUEST_FAILURE: | |
926 | break; | |
927 | case DP_REQUEST_SUCCESS: | |
928 | zvrf->lsp_installs++; | |
929 | break; | |
930 | } | |
d62a17ae | 931 | } |
932 | } else { | |
933 | /* Installed, may need an update and/or delete. */ | |
934 | if (!newbest) { | |
e6d44ec7 | 935 | |
7c5d0e18 DS |
936 | switch (kernel_del_lsp(lsp)) { |
937 | case DP_REQUEST_QUEUED: | |
af4c2728 | 938 | flog_err( |
e914ccbe | 939 | EC_ZEBRA_DP_INVALID_RC, |
43e52561 | 940 | "No current DataPlane interfaces can return this, please fix"); |
7c5d0e18 DS |
941 | break; |
942 | case DP_REQUEST_FAILURE: | |
943 | break; | |
944 | case DP_REQUEST_SUCCESS: | |
945 | zvrf->lsp_removals++; | |
946 | break; | |
947 | } | |
d62a17ae | 948 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
949 | zebra_nhlfe_t *nhlfe; |
950 | struct nexthop *nexthop; | |
2b63430c DS |
951 | |
952 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
953 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
e6d44ec7 | 954 | |
9fa38ec6 DS |
955 | /* |
956 | * Any NHLFE that was installed but is not | |
957 | * selected now needs to have its flags updated. | |
958 | */ | |
996c9314 LB |
959 | for (nhlfe = lsp->nhlfe_list; nhlfe; |
960 | nhlfe = nhlfe->next) { | |
9fa38ec6 DS |
961 | nexthop = nhlfe->nexthop; |
962 | if (!nexthop) | |
963 | continue; | |
964 | ||
965 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
966 | NHLFE_FLAG_INSTALLED) |
967 | && !CHECK_FLAG(nhlfe->flags, | |
968 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
969 | UNSET_FLAG(nhlfe->flags, |
970 | NHLFE_FLAG_INSTALLED); | |
971 | UNSET_FLAG(nexthop->flags, | |
972 | NEXTHOP_FLAG_FIB); | |
973 | } | |
974 | } | |
975 | ||
7c5d0e18 DS |
976 | switch (kernel_upd_lsp(lsp)) { |
977 | case DP_REQUEST_QUEUED: | |
af4c2728 | 978 | flog_err( |
e914ccbe | 979 | EC_ZEBRA_DP_INVALID_RC, |
43e52561 | 980 | "No current DataPlane interfaces can return this, please fix"); |
7c5d0e18 DS |
981 | break; |
982 | case DP_REQUEST_FAILURE: | |
983 | break; | |
984 | case DP_REQUEST_SUCCESS: | |
985 | zvrf->lsp_installs++; | |
986 | break; | |
987 | } | |
d62a17ae | 988 | } |
989 | } | |
990 | ||
991 | return WQ_SUCCESS; | |
40c7bdb0 | 992 | } |
993 | ||
994 | ||
995 | /* | |
996 | * Callback upon processing completion of a LSP forwarding entry. | |
997 | */ | |
d62a17ae | 998 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 999 | { |
d62a17ae | 1000 | struct zebra_vrf *zvrf; |
1001 | zebra_lsp_t *lsp; | |
1002 | struct hash *lsp_table; | |
1003 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
40c7bdb0 | 1004 | |
d62a17ae | 1005 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1006 | assert(zvrf); | |
40c7bdb0 | 1007 | |
d62a17ae | 1008 | lsp_table = zvrf->lsp_table; |
1009 | if (!lsp_table) // unexpected | |
1010 | return; | |
40c7bdb0 | 1011 | |
d62a17ae | 1012 | lsp = (zebra_lsp_t *)data; |
1013 | if (!lsp) // unexpected | |
1014 | return; | |
40c7bdb0 | 1015 | |
d62a17ae | 1016 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1017 | * exist, | |
1018 | * delete LSP entry also. | |
1019 | */ | |
1020 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1021 | |
d62a17ae | 1022 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { |
1023 | nhlfe_next = nhlfe->next; | |
1024 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1025 | nhlfe_del(nhlfe); | |
1026 | } | |
40c7bdb0 | 1027 | |
d62a17ae | 1028 | if (!lsp->nhlfe_list) { |
1029 | if (IS_ZEBRA_DEBUG_MPLS) | |
1030 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1031 | lsp->ile.in_label, lsp->flags); | |
40c7bdb0 | 1032 | |
d62a17ae | 1033 | lsp = hash_release(lsp_table, &lsp->ile); |
1034 | if (lsp) | |
1035 | XFREE(MTYPE_LSP, lsp); | |
1036 | } | |
40c7bdb0 | 1037 | } |
1038 | ||
1039 | /* | |
1040 | * Callback upon finishing the processing of all scheduled | |
1041 | * LSP forwarding entries. | |
1042 | */ | |
d62a17ae | 1043 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1044 | { |
d62a17ae | 1045 | /* Nothing to do for now. */ |
40c7bdb0 | 1046 | } |
1047 | ||
1048 | /* | |
1049 | * Add LSP forwarding entry to queue for subsequent processing. | |
1050 | */ | |
d62a17ae | 1051 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1052 | { |
d62a17ae | 1053 | /* If already scheduled, exit. */ |
1054 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1055 | return 0; | |
40c7bdb0 | 1056 | |
d62a17ae | 1057 | if (zebrad.lsp_process_q == NULL) { |
e914ccbe | 1058 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1059 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1060 | return -1; |
1061 | } | |
33c32282 | 1062 | |
d62a17ae | 1063 | work_queue_add(zebrad.lsp_process_q, lsp); |
1064 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
1065 | return 0; | |
40c7bdb0 | 1066 | } |
1067 | ||
1068 | /* | |
1069 | * Callback to allocate LSP forwarding table entry. | |
1070 | */ | |
d62a17ae | 1071 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1072 | { |
d62a17ae | 1073 | const zebra_ile_t *ile = p; |
1074 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1075 | |
d62a17ae | 1076 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1077 | lsp->ile = *ile; | |
40c7bdb0 | 1078 | |
d62a17ae | 1079 | if (IS_ZEBRA_DEBUG_MPLS) |
1080 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1081 | |
d62a17ae | 1082 | return ((void *)lsp); |
40c7bdb0 | 1083 | } |
1084 | ||
1085 | /* | |
1086 | * Create printable string for NHLFE entry. | |
1087 | */ | |
d62a17ae | 1088 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1089 | { |
d62a17ae | 1090 | struct nexthop *nexthop; |
40c7bdb0 | 1091 | |
d62a17ae | 1092 | buf[0] = '\0'; |
1093 | nexthop = nhlfe->nexthop; | |
1094 | switch (nexthop->type) { | |
1095 | case NEXTHOP_TYPE_IPV4: | |
1096 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1097 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1098 | break; | |
1099 | case NEXTHOP_TYPE_IPV6: | |
1100 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); | |
1101 | break; | |
b9abd9ad DS |
1102 | case NEXTHOP_TYPE_IFINDEX: |
1103 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1104 | default: |
1105 | break; | |
1106 | } | |
40c7bdb0 | 1107 | |
d62a17ae | 1108 | return buf; |
40c7bdb0 | 1109 | } |
1110 | ||
1111 | /* | |
1112 | * Check if NHLFE matches with search info passed. | |
1113 | */ | |
d62a17ae | 1114 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
1115 | union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1116 | { |
d62a17ae | 1117 | struct nexthop *nhop; |
1118 | int cmp = 1; | |
40c7bdb0 | 1119 | |
d62a17ae | 1120 | nhop = nhlfe->nexthop; |
1121 | if (!nhop) | |
1122 | return 1; | |
40c7bdb0 | 1123 | |
d62a17ae | 1124 | if (nhop->type != gtype) |
1125 | return 1; | |
40c7bdb0 | 1126 | |
d62a17ae | 1127 | switch (nhop->type) { |
1128 | case NEXTHOP_TYPE_IPV4: | |
1129 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1130 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1131 | sizeof(struct in_addr)); | |
1132 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1133 | cmp = !(nhop->ifindex == ifindex); | |
1134 | break; | |
1135 | case NEXTHOP_TYPE_IPV6: | |
1136 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1137 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1138 | sizeof(struct in6_addr)); | |
1139 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1140 | cmp = !(nhop->ifindex == ifindex); | |
1141 | break; | |
b9abd9ad DS |
1142 | case NEXTHOP_TYPE_IFINDEX: |
1143 | cmp = !(nhop->ifindex == ifindex); | |
1144 | break; | |
d62a17ae | 1145 | default: |
1146 | break; | |
1147 | } | |
40c7bdb0 | 1148 | |
d62a17ae | 1149 | return cmp; |
40c7bdb0 | 1150 | } |
1151 | ||
1152 | ||
1153 | /* | |
1154 | * Locate NHLFE that matches with passed info. | |
1155 | */ | |
d62a17ae | 1156 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1157 | enum nexthop_types_t gtype, union g_addr *gate, | |
1158 | ifindex_t ifindex) | |
40c7bdb0 | 1159 | { |
d62a17ae | 1160 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1161 | |
d62a17ae | 1162 | if (!lsp) |
1163 | return NULL; | |
40c7bdb0 | 1164 | |
d62a17ae | 1165 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { |
1166 | if (nhlfe->type != lsp_type) | |
1167 | continue; | |
1168 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1169 | break; | |
1170 | } | |
40c7bdb0 | 1171 | |
d62a17ae | 1172 | return nhlfe; |
40c7bdb0 | 1173 | } |
1174 | ||
1175 | /* | |
1176 | * Add NHLFE. Base entry must have been created and duplicate | |
1177 | * check done. | |
1178 | */ | |
d62a17ae | 1179 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1180 | enum nexthop_types_t gtype, union g_addr *gate, | |
1181 | ifindex_t ifindex, mpls_label_t out_label) | |
1182 | { | |
1183 | zebra_nhlfe_t *nhlfe; | |
1184 | struct nexthop *nexthop; | |
1185 | ||
1186 | if (!lsp) | |
1187 | return NULL; | |
1188 | ||
1189 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1190 | |
1191 | nhlfe->lsp = lsp; | |
1192 | nhlfe->type = lsp_type; | |
1193 | nhlfe->distance = lsp_distance(lsp_type); | |
1194 | ||
1195 | nexthop = nexthop_new(); | |
1196 | if (!nexthop) { | |
1197 | XFREE(MTYPE_NHLFE, nhlfe); | |
1198 | return NULL; | |
1199 | } | |
1200 | nexthop_add_labels(nexthop, lsp_type, 1, &out_label); | |
1201 | ||
4a7371e9 | 1202 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1203 | nexthop->type = gtype; |
1204 | switch (nexthop->type) { | |
1205 | case NEXTHOP_TYPE_IPV4: | |
1206 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1207 | nexthop->gate.ipv4 = gate->ipv4; | |
1208 | if (ifindex) | |
1209 | nexthop->ifindex = ifindex; | |
1210 | break; | |
1211 | case NEXTHOP_TYPE_IPV6: | |
1212 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1213 | nexthop->gate.ipv6 = gate->ipv6; | |
1214 | if (ifindex) | |
1215 | nexthop->ifindex = ifindex; | |
1216 | break; | |
b9abd9ad DS |
1217 | case NEXTHOP_TYPE_IFINDEX: |
1218 | nexthop->ifindex = ifindex; | |
1219 | break; | |
d62a17ae | 1220 | default: |
1221 | nexthop_free(nexthop); | |
1222 | XFREE(MTYPE_NHLFE, nhlfe); | |
1223 | return NULL; | |
1224 | break; | |
1225 | } | |
1226 | ||
1227 | nhlfe->nexthop = nexthop; | |
1228 | if (lsp->nhlfe_list) | |
1229 | lsp->nhlfe_list->prev = nhlfe; | |
1230 | nhlfe->next = lsp->nhlfe_list; | |
1231 | lsp->nhlfe_list = nhlfe; | |
1232 | ||
1233 | return nhlfe; | |
40c7bdb0 | 1234 | } |
1235 | ||
1236 | /* | |
1237 | * Delete NHLFE. Entry must be present on list. | |
1238 | */ | |
d62a17ae | 1239 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1240 | { |
d62a17ae | 1241 | zebra_lsp_t *lsp; |
40c7bdb0 | 1242 | |
d62a17ae | 1243 | if (!nhlfe) |
1244 | return -1; | |
40c7bdb0 | 1245 | |
d62a17ae | 1246 | lsp = nhlfe->lsp; |
1247 | if (!lsp) | |
1248 | return -1; | |
40c7bdb0 | 1249 | |
d62a17ae | 1250 | /* Free nexthop. */ |
1251 | if (nhlfe->nexthop) | |
1252 | nexthop_free(nhlfe->nexthop); | |
40c7bdb0 | 1253 | |
d62a17ae | 1254 | /* Unlink from LSP */ |
1255 | if (nhlfe->next) | |
1256 | nhlfe->next->prev = nhlfe->prev; | |
1257 | if (nhlfe->prev) | |
1258 | nhlfe->prev->next = nhlfe->next; | |
1259 | else | |
1260 | lsp->nhlfe_list = nhlfe->next; | |
40c7bdb0 | 1261 | |
d62a17ae | 1262 | if (nhlfe == lsp->best_nhlfe) |
1263 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1264 | |
d62a17ae | 1265 | XFREE(MTYPE_NHLFE, nhlfe); |
40c7bdb0 | 1266 | |
d62a17ae | 1267 | return 0; |
40c7bdb0 | 1268 | } |
1269 | ||
a64448ba DS |
1270 | /* |
1271 | * Update label for NHLFE entry. | |
1272 | */ | |
d62a17ae | 1273 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1274 | struct mpls_label_stack *nh_label) |
d62a17ae | 1275 | { |
1276 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1277 | } | |
1278 | ||
1279 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1280 | enum lsp_types_t type) | |
1281 | { | |
1282 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
1283 | int schedule_lsp = 0; | |
1284 | char buf[BUFSIZ]; | |
1285 | ||
1286 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
1287 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
1288 | nhlfe_next = nhlfe->next; | |
1289 | ||
1290 | /* Skip non-static NHLFEs */ | |
1291 | if (nhlfe->type != type) | |
1292 | continue; | |
1293 | ||
1294 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1295 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1296 | zlog_debug( | |
1297 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1298 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1299 | } | |
1300 | ||
1301 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1302 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1303 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1304 | schedule_lsp = 1; | |
1305 | } else { | |
1306 | nhlfe_del(nhlfe); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | /* Queue LSP for processing, if needed, else delete. */ | |
1311 | if (schedule_lsp) { | |
1312 | if (lsp_processq_add(lsp)) | |
1313 | return -1; | |
1314 | } else if (!lsp->nhlfe_list | |
1315 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
1316 | if (IS_ZEBRA_DEBUG_MPLS) | |
1317 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1318 | lsp->ile.in_label, lsp->flags); | |
1319 | ||
1320 | lsp = hash_release(lsp_table, &lsp->ile); | |
1321 | if (lsp) | |
1322 | XFREE(MTYPE_LSP, lsp); | |
1323 | } | |
1324 | ||
1325 | return 0; | |
40c7bdb0 | 1326 | } |
1327 | ||
ce549947 RW |
1328 | /* |
1329 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1330 | * If no other NHLFEs exist, the entry would be deleted. | |
1331 | */ | |
d62a17ae | 1332 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1333 | mpls_label_t in_label) | |
ce549947 | 1334 | { |
d62a17ae | 1335 | struct hash *lsp_table; |
1336 | zebra_ile_t tmp_ile; | |
1337 | zebra_lsp_t *lsp; | |
ce549947 | 1338 | |
d62a17ae | 1339 | /* Lookup table. */ |
1340 | lsp_table = zvrf->lsp_table; | |
1341 | if (!lsp_table) | |
1342 | return -1; | |
ce549947 | 1343 | |
d62a17ae | 1344 | /* If entry is not present, exit. */ |
1345 | tmp_ile.in_label = in_label; | |
1346 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1347 | if (!lsp || !lsp->nhlfe_list) | |
1348 | return 0; | |
ce549947 | 1349 | |
d62a17ae | 1350 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1351 | } |
1352 | ||
d62a17ae | 1353 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1354 | { |
d62a17ae | 1355 | char buf[BUFSIZ]; |
1356 | json_object *json_nhlfe = NULL; | |
1357 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1358 | |
d62a17ae | 1359 | json_nhlfe = json_object_new_object(); |
1360 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1361 | json_object_int_add(json_nhlfe, "outLabel", | |
1362 | nexthop->nh_label->label[0]); | |
1363 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1364 | |
d62a17ae | 1365 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1366 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1367 | |
d62a17ae | 1368 | switch (nexthop->type) { |
1369 | case NEXTHOP_TYPE_IPV4: | |
1370 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1371 | json_object_string_add(json_nhlfe, "nexthop", | |
1372 | inet_ntoa(nexthop->gate.ipv4)); | |
1373 | break; | |
1374 | case NEXTHOP_TYPE_IPV6: | |
1375 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1376 | json_object_string_add( | |
1377 | json_nhlfe, "nexthop", | |
1378 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1379 | ||
1380 | if (nexthop->ifindex) | |
4a7371e9 DS |
1381 | json_object_string_add(json_nhlfe, "interface", |
1382 | ifindex2ifname(nexthop->ifindex, | |
1383 | nexthop->vrf_id)); | |
d62a17ae | 1384 | break; |
1385 | default: | |
1386 | break; | |
1387 | } | |
1388 | return json_nhlfe; | |
b78b820d | 1389 | } |
1390 | ||
3ab18ff2 | 1391 | /* |
1392 | * Print the NHLFE for a LSP forwarding entry. | |
1393 | */ | |
d62a17ae | 1394 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1395 | { | |
1396 | struct nexthop *nexthop; | |
1397 | char buf[BUFSIZ]; | |
1398 | ||
1399 | nexthop = nhlfe->nexthop; | |
1400 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1401 | return; | |
1402 | ||
1403 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1404 | nhlfe_type2str(nhlfe->type), | |
1405 | label2str(nexthop->nh_label->label[0], buf, BUFSIZ), | |
1406 | nhlfe->distance); | |
1407 | switch (nexthop->type) { | |
1408 | case NEXTHOP_TYPE_IPV4: | |
1409 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1410 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1411 | if (nexthop->ifindex) | |
1412 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1413 | ifindex2ifname(nexthop->ifindex, |
1414 | nexthop->vrf_id)); | |
d62a17ae | 1415 | break; |
1416 | case NEXTHOP_TYPE_IPV6: | |
1417 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1418 | vty_out(vty, " via %s", | |
1419 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1420 | if (nexthop->ifindex) | |
1421 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1422 | ifindex2ifname(nexthop->ifindex, |
1423 | nexthop->vrf_id)); | |
d62a17ae | 1424 | break; |
1425 | default: | |
1426 | break; | |
1427 | } | |
996c9314 LB |
1428 | vty_out(vty, "%s", |
1429 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1430 | : ""); | |
d62a17ae | 1431 | vty_out(vty, "\n"); |
3ab18ff2 | 1432 | } |
1433 | ||
1434 | /* | |
1435 | * Print an LSP forwarding entry. | |
1436 | */ | |
d62a17ae | 1437 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt) |
3ab18ff2 | 1438 | { |
d62a17ae | 1439 | zebra_nhlfe_t *nhlfe; |
1440 | struct vty *vty; | |
3ab18ff2 | 1441 | |
d62a17ae | 1442 | vty = (struct vty *)ctxt; |
3ab18ff2 | 1443 | |
d62a17ae | 1444 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1445 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1446 | : ""); | |
3ab18ff2 | 1447 | |
d62a17ae | 1448 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1449 | nhlfe_print(nhlfe, vty); | |
3ab18ff2 | 1450 | } |
1451 | ||
1452 | /* | |
b78b820d | 1453 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1454 | */ |
d62a17ae | 1455 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1456 | { |
d62a17ae | 1457 | zebra_nhlfe_t *nhlfe = NULL; |
1458 | json_object *json = json_object_new_object(); | |
1459 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1460 | |
d62a17ae | 1461 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1462 | |
d62a17ae | 1463 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1464 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1465 | |
d62a17ae | 1466 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1467 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
b78b820d | 1468 | |
d62a17ae | 1469 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1470 | return json; | |
b78b820d | 1471 | } |
1472 | ||
1473 | ||
1474 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1475 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1476 | { |
d62a17ae | 1477 | unsigned int i; |
1478 | struct hash_backet *hb; | |
1479 | struct list *sorted_list = list_new(); | |
b78b820d | 1480 | |
d62a17ae | 1481 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1482 | |
d62a17ae | 1483 | for (i = 0; i < hash->size; i++) |
1484 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1485 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1486 | |
d62a17ae | 1487 | return sorted_list; |
3ab18ff2 | 1488 | } |
1489 | ||
7758e3f3 | 1490 | /* |
b78b820d | 1491 | * Compare two LSPs based on their label values. |
7758e3f3 | 1492 | */ |
d62a17ae | 1493 | static int lsp_cmp(zebra_lsp_t *lsp1, zebra_lsp_t *lsp2) |
7758e3f3 | 1494 | { |
d62a17ae | 1495 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1496 | return -1; | |
7758e3f3 | 1497 | |
d62a17ae | 1498 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1499 | return 1; | |
7758e3f3 | 1500 | |
d62a17ae | 1501 | return 0; |
7758e3f3 | 1502 | } |
1503 | ||
1504 | /* | |
1505 | * Callback to allocate static LSP. | |
1506 | */ | |
d62a17ae | 1507 | static void *slsp_alloc(void *p) |
7758e3f3 | 1508 | { |
d62a17ae | 1509 | const zebra_ile_t *ile = p; |
1510 | zebra_slsp_t *slsp; | |
7758e3f3 | 1511 | |
d62a17ae | 1512 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1513 | slsp->ile = *ile; | |
1514 | return ((void *)slsp); | |
7758e3f3 | 1515 | } |
1516 | ||
b78b820d | 1517 | /* |
1518 | * Compare two static LSPs based on their label values. | |
1519 | */ | |
d62a17ae | 1520 | static int slsp_cmp(zebra_slsp_t *slsp1, zebra_slsp_t *slsp2) |
b78b820d | 1521 | { |
d62a17ae | 1522 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1523 | return -1; | |
b78b820d | 1524 | |
d62a17ae | 1525 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1526 | return 1; | |
b78b820d | 1527 | |
d62a17ae | 1528 | return 0; |
b78b820d | 1529 | } |
1530 | ||
7758e3f3 | 1531 | /* |
1532 | * Check if static NHLFE matches with search info passed. | |
1533 | */ | |
d62a17ae | 1534 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
1535 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1536 | { |
d62a17ae | 1537 | int cmp = 1; |
7758e3f3 | 1538 | |
d62a17ae | 1539 | if (snhlfe->gtype != gtype) |
1540 | return 1; | |
7758e3f3 | 1541 | |
d62a17ae | 1542 | switch (snhlfe->gtype) { |
1543 | case NEXTHOP_TYPE_IPV4: | |
1544 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1545 | sizeof(struct in_addr)); | |
1546 | break; | |
1547 | case NEXTHOP_TYPE_IPV6: | |
1548 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1549 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1550 | sizeof(struct in6_addr)); | |
1551 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1552 | cmp = !(snhlfe->ifindex == ifindex); | |
1553 | break; | |
1554 | default: | |
1555 | break; | |
1556 | } | |
7758e3f3 | 1557 | |
d62a17ae | 1558 | return cmp; |
7758e3f3 | 1559 | } |
1560 | ||
1561 | /* | |
1562 | * Locate static NHLFE that matches with passed info. | |
1563 | */ | |
d62a17ae | 1564 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1565 | enum nexthop_types_t gtype, | |
1566 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1567 | { |
d62a17ae | 1568 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1569 | |
d62a17ae | 1570 | if (!slsp) |
1571 | return NULL; | |
7758e3f3 | 1572 | |
d62a17ae | 1573 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe->next) { |
1574 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) | |
1575 | break; | |
1576 | } | |
7758e3f3 | 1577 | |
d62a17ae | 1578 | return snhlfe; |
7758e3f3 | 1579 | } |
1580 | ||
1581 | ||
1582 | /* | |
1583 | * Add static NHLFE. Base LSP config entry must have been created | |
1584 | * and duplicate check done. | |
1585 | */ | |
d62a17ae | 1586 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1587 | enum nexthop_types_t gtype, | |
1588 | union g_addr *gate, ifindex_t ifindex, | |
1589 | mpls_label_t out_label) | |
1590 | { | |
1591 | zebra_snhlfe_t *snhlfe; | |
1592 | ||
1593 | if (!slsp) | |
1594 | return NULL; | |
1595 | ||
1596 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1597 | snhlfe->slsp = slsp; | |
1598 | snhlfe->out_label = out_label; | |
1599 | snhlfe->gtype = gtype; | |
1600 | switch (gtype) { | |
1601 | case NEXTHOP_TYPE_IPV4: | |
1602 | snhlfe->gate.ipv4 = gate->ipv4; | |
1603 | break; | |
1604 | case NEXTHOP_TYPE_IPV6: | |
1605 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1606 | snhlfe->gate.ipv6 = gate->ipv6; | |
1607 | if (ifindex) | |
1608 | snhlfe->ifindex = ifindex; | |
1609 | break; | |
1610 | default: | |
1611 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1612 | return NULL; | |
1613 | } | |
1614 | ||
1615 | if (slsp->snhlfe_list) | |
1616 | slsp->snhlfe_list->prev = snhlfe; | |
1617 | snhlfe->next = slsp->snhlfe_list; | |
1618 | slsp->snhlfe_list = snhlfe; | |
1619 | ||
1620 | return snhlfe; | |
7758e3f3 | 1621 | } |
1622 | ||
1623 | /* | |
1624 | * Delete static NHLFE. Entry must be present on list. | |
1625 | */ | |
d62a17ae | 1626 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1627 | { |
d62a17ae | 1628 | zebra_slsp_t *slsp; |
7758e3f3 | 1629 | |
d62a17ae | 1630 | if (!snhlfe) |
1631 | return -1; | |
7758e3f3 | 1632 | |
d62a17ae | 1633 | slsp = snhlfe->slsp; |
1634 | if (!slsp) | |
1635 | return -1; | |
7758e3f3 | 1636 | |
d62a17ae | 1637 | if (snhlfe->next) |
1638 | snhlfe->next->prev = snhlfe->prev; | |
1639 | if (snhlfe->prev) | |
1640 | snhlfe->prev->next = snhlfe->next; | |
1641 | else | |
1642 | slsp->snhlfe_list = snhlfe->next; | |
7758e3f3 | 1643 | |
d62a17ae | 1644 | snhlfe->prev = snhlfe->next = NULL; |
1645 | if (snhlfe->ifname) | |
1646 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); | |
1647 | XFREE(MTYPE_SNHLFE, snhlfe); | |
7758e3f3 | 1648 | |
d62a17ae | 1649 | return 0; |
7758e3f3 | 1650 | } |
1651 | ||
1652 | /* | |
1653 | * Delete all static NHLFE entries for this LSP (in label). | |
1654 | */ | |
d62a17ae | 1655 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1656 | { |
d62a17ae | 1657 | zebra_snhlfe_t *snhlfe, *snhlfe_next; |
7758e3f3 | 1658 | |
d62a17ae | 1659 | if (!slsp) |
1660 | return -1; | |
7758e3f3 | 1661 | |
d62a17ae | 1662 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe_next) { |
1663 | snhlfe_next = snhlfe->next; | |
1664 | snhlfe_del(snhlfe); | |
1665 | } | |
7758e3f3 | 1666 | |
d62a17ae | 1667 | return 0; |
7758e3f3 | 1668 | } |
1669 | ||
1670 | /* | |
1671 | * Create printable string for NHLFE configuration. | |
1672 | */ | |
d62a17ae | 1673 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1674 | { |
d62a17ae | 1675 | buf[0] = '\0'; |
1676 | switch (snhlfe->gtype) { | |
1677 | case NEXTHOP_TYPE_IPV4: | |
1678 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1679 | break; | |
1680 | case NEXTHOP_TYPE_IPV6: | |
1681 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1682 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1683 | if (snhlfe->ifindex) | |
1684 | strcat(buf, | |
1685 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT)); | |
1686 | break; | |
1687 | default: | |
1688 | break; | |
1689 | } | |
7758e3f3 | 1690 | |
d62a17ae | 1691 | return buf; |
7758e3f3 | 1692 | } |
1693 | ||
40c7bdb0 | 1694 | /* |
1695 | * Initialize work queue for processing changed LSPs. | |
1696 | */ | |
d62a17ae | 1697 | static int mpls_processq_init(struct zebra_t *zebra) |
40c7bdb0 | 1698 | { |
d62a17ae | 1699 | zebra->lsp_process_q = work_queue_new(zebra->master, "LSP processing"); |
1700 | if (!zebra->lsp_process_q) { | |
e914ccbe | 1701 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1702 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1703 | return -1; |
1704 | } | |
40c7bdb0 | 1705 | |
d62a17ae | 1706 | zebra->lsp_process_q->spec.workfunc = &lsp_process; |
1707 | zebra->lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1708 | zebra->lsp_process_q->spec.errorfunc = NULL; | |
1709 | zebra->lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1710 | zebra->lsp_process_q->spec.max_retries = 0; | |
1711 | zebra->lsp_process_q->spec.hold = 10; | |
33c32282 | 1712 | |
d62a17ae | 1713 | return 0; |
40c7bdb0 | 1714 | } |
1715 | ||
7758e3f3 | 1716 | |
7758e3f3 | 1717 | /* Public functions */ |
1718 | ||
215181cb | 1719 | void kernel_lsp_pass_fail(zebra_lsp_t *lsp, enum dp_results res) |
4a83e7a0 DS |
1720 | { |
1721 | struct nexthop *nexthop; | |
1722 | zebra_nhlfe_t *nhlfe; | |
1723 | ||
1724 | if (!lsp) | |
1725 | return; | |
1726 | ||
1727 | switch (res) { | |
215181cb | 1728 | case DP_INSTALL_FAILURE: |
4a83e7a0 DS |
1729 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1730 | clear_nhlfe_installed(lsp); | |
e914ccbe | 1731 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
9df414fe | 1732 | "LSP Install Failure: %u", lsp->ile.in_label); |
4a83e7a0 | 1733 | break; |
215181cb | 1734 | case DP_INSTALL_SUCCESS: |
4a83e7a0 DS |
1735 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1736 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1737 | nexthop = nhlfe->nexthop; | |
1738 | if (!nexthop) | |
1739 | continue; | |
1740 | ||
1741 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1742 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1743 | } | |
1744 | break; | |
215181cb | 1745 | case DP_DELETE_SUCCESS: |
4a83e7a0 DS |
1746 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
1747 | clear_nhlfe_installed(lsp); | |
1748 | break; | |
215181cb | 1749 | case DP_DELETE_FAILURE: |
e914ccbe | 1750 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
9df414fe | 1751 | "LSP Deletion Failure: %u", lsp->ile.in_label); |
4a83e7a0 DS |
1752 | break; |
1753 | } | |
1754 | } | |
1755 | ||
a64448ba DS |
1756 | /* |
1757 | * Install dynamic LSP entry. | |
1758 | */ | |
d62a17ae | 1759 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
1760 | struct route_entry *re) | |
a64448ba | 1761 | { |
d62a17ae | 1762 | struct route_table *table; |
1763 | zebra_fec_t *fec; | |
a64448ba | 1764 | |
d62a17ae | 1765 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
1766 | if (!table) | |
1767 | return -1; | |
a64448ba | 1768 | |
d62a17ae | 1769 | /* See if there is a configured label binding for this FEC. */ |
1770 | fec = fec_find(table, &rn->p); | |
1771 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
1772 | return 0; | |
a64448ba | 1773 | |
d62a17ae | 1774 | /* We cannot install a label forwarding entry if local label is the |
1775 | * implicit-null label. | |
1776 | */ | |
70e98a7f | 1777 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 1778 | return 0; |
a64448ba | 1779 | |
d62a17ae | 1780 | if (lsp_install(zvrf, fec->label, rn, re)) |
1781 | return -1; | |
a64448ba | 1782 | |
d62a17ae | 1783 | return 0; |
a64448ba DS |
1784 | } |
1785 | ||
1786 | /* | |
1787 | * Uninstall dynamic LSP entry, if any. | |
1788 | */ | |
d62a17ae | 1789 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
1790 | struct route_entry *re) | |
a64448ba | 1791 | { |
d62a17ae | 1792 | struct route_table *table; |
1793 | zebra_fec_t *fec; | |
a64448ba | 1794 | |
d62a17ae | 1795 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
1796 | if (!table) | |
1797 | return -1; | |
a64448ba | 1798 | |
d62a17ae | 1799 | /* See if there is a configured label binding for this FEC. */ |
1800 | fec = fec_find(table, &rn->p); | |
1801 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
1802 | return 0; | |
a64448ba | 1803 | |
d62a17ae | 1804 | /* Uninstall always removes all dynamic NHLFEs. */ |
1805 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
1806 | } |
1807 | ||
5aba114a DS |
1808 | /* |
1809 | * Registration from a client for the label binding for a FEC. If a binding | |
1810 | * already exists, it is informed to the client. | |
28d58fd7 | 1811 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 1812 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 VV |
1813 | * label from a locally configured label block (SRGB), if one exists and index |
1814 | * is acceptable. | |
5aba114a | 1815 | */ |
d62a17ae | 1816 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
d7c0a89a | 1817 | uint32_t label_index, struct zserv *client) |
d62a17ae | 1818 | { |
1819 | struct route_table *table; | |
1820 | zebra_fec_t *fec; | |
1821 | char buf[BUFSIZ]; | |
1822 | int new_client; | |
1823 | int label_change = 0; | |
d7c0a89a | 1824 | uint32_t old_label; |
d62a17ae | 1825 | |
1826 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
1827 | if (!table) | |
1828 | return -1; | |
1829 | ||
1830 | if (IS_ZEBRA_DEBUG_MPLS) | |
1831 | prefix2str(p, buf, BUFSIZ); | |
1832 | ||
1833 | /* Locate FEC */ | |
1834 | fec = fec_find(table, p); | |
1835 | if (!fec) { | |
1836 | fec = fec_add(table, p, MPLS_INVALID_LABEL, 0, label_index); | |
1837 | if (!fec) { | |
1838 | prefix2str(p, buf, BUFSIZ); | |
af4c2728 | 1839 | flog_err( |
e914ccbe | 1840 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 1841 | "Failed to add FEC %s upon register, client %s", |
1842 | buf, zebra_route_string(client->proto)); | |
1843 | return -1; | |
1844 | } | |
1845 | ||
1846 | old_label = MPLS_INVALID_LABEL; | |
1847 | new_client = 1; | |
1848 | } else { | |
1849 | /* Client may register same FEC with different label index. */ | |
1850 | new_client = | |
1851 | (listnode_lookup(fec->client_list, client) == NULL); | |
1852 | if (!new_client && fec->label_index == label_index) | |
1853 | /* Duplicate register */ | |
1854 | return 0; | |
1855 | ||
1856 | /* Save current label, update label index */ | |
1857 | old_label = fec->label; | |
1858 | fec->label_index = label_index; | |
1859 | } | |
1860 | ||
1861 | if (new_client) | |
1862 | listnode_add(fec->client_list, client); | |
1863 | ||
1864 | if (IS_ZEBRA_DEBUG_MPLS) | |
1865 | zlog_debug("FEC %s Label Index %u %s by client %s", buf, | |
1866 | label_index, new_client ? "registered" : "updated", | |
1867 | zebra_route_string(client->proto)); | |
1868 | ||
1869 | /* If not a configured FEC, derive the local label (from label index) | |
1870 | * or reset it. | |
1871 | */ | |
1872 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) { | |
1873 | fec_derive_label_from_index(zvrf, fec); | |
1874 | ||
1875 | /* If no label change, exit. */ | |
1876 | if (fec->label == old_label) | |
1877 | return 0; | |
1878 | ||
1879 | label_change = 1; | |
1880 | } | |
1881 | ||
1882 | /* If new client or label change, update client and install or uninstall | |
1883 | * label forwarding entry as needed. | |
1884 | */ | |
1885 | /* Inform client of label, if needed. */ | |
1886 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
1887 | if (IS_ZEBRA_DEBUG_MPLS) | |
1888 | zlog_debug("Update client label %u", fec->label); | |
1889 | fec_send(fec, client); | |
1890 | } | |
1891 | ||
1892 | if (new_client || label_change) | |
1893 | return fec_change_update_lsp(zvrf, fec, old_label); | |
1894 | ||
1895 | return 0; | |
5aba114a DS |
1896 | } |
1897 | ||
1898 | /* | |
1899 | * Deregistration from a client for the label binding for a FEC. The FEC | |
1900 | * itself is deleted if no other registered clients exist and there is no | |
1901 | * label bound to the FEC. | |
1902 | */ | |
d62a17ae | 1903 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
1904 | struct zserv *client) | |
5aba114a | 1905 | { |
d62a17ae | 1906 | struct route_table *table; |
1907 | zebra_fec_t *fec; | |
1908 | char buf[BUFSIZ]; | |
5aba114a | 1909 | |
d62a17ae | 1910 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
1911 | if (!table) | |
1912 | return -1; | |
5aba114a | 1913 | |
d62a17ae | 1914 | if (IS_ZEBRA_DEBUG_MPLS) |
1915 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 1916 | |
d62a17ae | 1917 | fec = fec_find(table, p); |
1918 | if (!fec) { | |
1919 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 1920 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
1921 | "Failed to find FEC %s upon unregister, client %s", |
1922 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 1923 | return -1; |
1924 | } | |
5aba114a | 1925 | |
d62a17ae | 1926 | listnode_delete(fec->client_list, client); |
1927 | ||
1928 | if (IS_ZEBRA_DEBUG_MPLS) | |
1929 | zlog_debug("FEC %s unregistered by client %s", buf, | |
1930 | zebra_route_string(client->proto)); | |
1931 | ||
1932 | /* If not a configured entry, delete the FEC if no other clients. Before | |
1933 | * deleting, see if any LSP needs to be uninstalled. | |
1934 | */ | |
1935 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
1936 | && list_isempty(fec->client_list)) { | |
1937 | mpls_label_t old_label = fec->label; | |
1938 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
1939 | fec_change_update_lsp(zvrf, fec, old_label); | |
1940 | fec_del(fec); | |
1941 | } | |
5aba114a | 1942 | |
d62a17ae | 1943 | return 0; |
5aba114a DS |
1944 | } |
1945 | ||
1946 | /* | |
1947 | * Cleanup any FECs registered by this client. | |
1948 | */ | |
453844ab | 1949 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 1950 | { |
453844ab | 1951 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 1952 | struct route_node *rn; |
1953 | zebra_fec_t *fec; | |
1954 | struct listnode *node; | |
1955 | struct zserv *fec_client; | |
1956 | int af; | |
1957 | ||
1958 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
1959 | if (zvrf->fec_table[af] == NULL) | |
1960 | continue; | |
1961 | ||
1962 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
1963 | rn = route_next(rn)) { | |
1964 | fec = rn->info; | |
1965 | if (!fec || list_isempty(fec->client_list)) | |
1966 | continue; | |
1967 | ||
1968 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
1969 | fec_client)) { | |
1970 | if (fec_client == client) { | |
1971 | listnode_delete(fec->client_list, | |
1972 | fec_client); | |
1973 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
1974 | && list_isempty(fec->client_list)) | |
1975 | fec_del(fec); | |
1976 | break; | |
1977 | } | |
1978 | } | |
1979 | } | |
1980 | } | |
5aba114a | 1981 | |
d62a17ae | 1982 | return 0; |
5aba114a DS |
1983 | } |
1984 | ||
f31e084c DS |
1985 | /* |
1986 | * Return FEC (if any) to which this label is bound. | |
1987 | * Note: Only works for per-prefix binding and when the label is not | |
1988 | * implicit-null. | |
1989 | * TODO: Currently walks entire table, can optimize later with another | |
1990 | * hash.. | |
1991 | */ | |
d62a17ae | 1992 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
1993 | mpls_label_t label) | |
1994 | { | |
1995 | struct route_node *rn; | |
1996 | zebra_fec_t *fec; | |
1997 | int af; | |
1998 | ||
1999 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2000 | if (zvrf->fec_table[af] == NULL) | |
2001 | continue; | |
2002 | ||
2003 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2004 | rn = route_next(rn)) { | |
2005 | if (!rn->info) | |
2006 | continue; | |
2007 | fec = rn->info; | |
2008 | if (fec->label == label) | |
2009 | return fec; | |
2010 | } | |
2011 | } | |
f31e084c | 2012 | |
d62a17ae | 2013 | return NULL; |
f31e084c DS |
2014 | } |
2015 | ||
2016 | /* | |
2017 | * Inform if specified label is currently bound to a FEC or not. | |
2018 | */ | |
d62a17ae | 2019 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2020 | { |
d62a17ae | 2021 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2022 | } |
2023 | ||
2024 | /* | |
5aba114a | 2025 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2026 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2027 | * label forwarding entry. | |
9d303b37 | 2028 | */ |
d62a17ae | 2029 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2030 | mpls_label_t in_label) | |
2031 | { | |
2032 | struct route_table *table; | |
2033 | zebra_fec_t *fec; | |
2034 | char buf[BUFSIZ]; | |
2035 | mpls_label_t old_label; | |
2036 | int ret = 0; | |
2037 | ||
2038 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2039 | if (!table) | |
2040 | return -1; | |
2041 | ||
2042 | if (IS_ZEBRA_DEBUG_MPLS) | |
2043 | prefix2str(p, buf, BUFSIZ); | |
2044 | ||
2045 | /* Update existing FEC or create a new one. */ | |
2046 | fec = fec_find(table, p); | |
2047 | if (!fec) { | |
2048 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2049 | MPLS_INVALID_LABEL_INDEX); | |
2050 | if (!fec) { | |
2051 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2052 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2053 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2054 | return -1; |
2055 | } | |
2056 | ||
2057 | if (IS_ZEBRA_DEBUG_MPLS) | |
2058 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2059 | } else { | |
2060 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2061 | if (fec->label == in_label) | |
2062 | /* Duplicate config */ | |
2063 | return 0; | |
2064 | ||
2065 | /* Label change, update clients. */ | |
2066 | old_label = fec->label; | |
2067 | if (IS_ZEBRA_DEBUG_MPLS) | |
2068 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2069 | ||
2070 | fec->label = in_label; | |
2071 | fec_update_clients(fec); | |
2072 | ||
2073 | /* Update label forwarding entries appropriately */ | |
2074 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2075 | } | |
2076 | ||
2077 | return ret; | |
f31e084c DS |
2078 | } |
2079 | ||
2080 | /* | |
5aba114a DS |
2081 | * Remove static FEC to label binding. If there are no clients registered |
2082 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2083 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2084 | * client may need to be updated with derived label. | |
f31e084c | 2085 | */ |
d62a17ae | 2086 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2087 | { | |
2088 | struct route_table *table; | |
2089 | zebra_fec_t *fec; | |
2090 | mpls_label_t old_label; | |
2091 | char buf[BUFSIZ]; | |
2092 | ||
2093 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2094 | if (!table) | |
2095 | return -1; | |
2096 | ||
2097 | fec = fec_find(table, p); | |
2098 | if (!fec) { | |
2099 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2100 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2101 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2102 | return -1; |
2103 | } | |
2104 | ||
2105 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2106 | prefix2str(p, buf, BUFSIZ); | |
2107 | zlog_debug("Delete fec %s label index %u", buf, | |
2108 | fec->label_index); | |
2109 | } | |
2110 | ||
2111 | old_label = fec->label; | |
2112 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2113 | fec->label = MPLS_INVALID_LABEL; | |
2114 | ||
2115 | /* If no client exists, just delete the FEC. */ | |
2116 | if (list_isempty(fec->client_list)) { | |
2117 | fec_del(fec); | |
2118 | return 0; | |
2119 | } | |
2120 | ||
2121 | /* Derive the local label (from label index) or reset it. */ | |
2122 | fec_derive_label_from_index(zvrf, fec); | |
2123 | ||
2124 | /* If there is a label change, update clients. */ | |
2125 | if (fec->label == old_label) | |
2126 | return 0; | |
2127 | fec_update_clients(fec); | |
2128 | ||
2129 | /* Update label forwarding entries appropriately */ | |
2130 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2131 | } |
2132 | ||
2133 | /* | |
2134 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2135 | */ | |
d62a17ae | 2136 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2137 | { |
d62a17ae | 2138 | struct route_node *rn; |
2139 | int af; | |
2140 | zebra_fec_t *fec; | |
2141 | char buf[BUFSIZ]; | |
2142 | int write = 0; | |
f31e084c | 2143 | |
d62a17ae | 2144 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2145 | if (zvrf->fec_table[af] == NULL) | |
2146 | continue; | |
f31e084c | 2147 | |
d62a17ae | 2148 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2149 | rn = route_next(rn)) { | |
2150 | if (!rn->info) | |
2151 | continue; | |
f31e084c | 2152 | |
d62a17ae | 2153 | char lstr[BUFSIZ]; |
2154 | fec = rn->info; | |
f31e084c | 2155 | |
d62a17ae | 2156 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2157 | continue; | |
f31e084c | 2158 | |
d62a17ae | 2159 | write = 1; |
2160 | prefix2str(&rn->p, buf, BUFSIZ); | |
2161 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2162 | label2str(fec->label, lstr, BUFSIZ)); | |
2163 | } | |
2164 | } | |
f31e084c | 2165 | |
d62a17ae | 2166 | return write; |
f31e084c DS |
2167 | } |
2168 | ||
2169 | /* | |
2170 | * Display MPLS FEC to label binding (VTY command handler). | |
2171 | */ | |
d62a17ae | 2172 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2173 | { |
d62a17ae | 2174 | struct route_node *rn; |
2175 | int af; | |
f31e084c | 2176 | |
d62a17ae | 2177 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2178 | if (zvrf->fec_table[af] == NULL) | |
2179 | continue; | |
f31e084c | 2180 | |
d62a17ae | 2181 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2182 | rn = route_next(rn)) { | |
2183 | if (!rn->info) | |
2184 | continue; | |
2185 | fec_print(rn->info, vty); | |
2186 | } | |
2187 | } | |
f31e084c DS |
2188 | } |
2189 | ||
2190 | /* | |
2191 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2192 | */ | |
d62a17ae | 2193 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2194 | struct prefix *p) | |
f31e084c | 2195 | { |
d62a17ae | 2196 | struct route_table *table; |
2197 | struct route_node *rn; | |
f31e084c | 2198 | |
d62a17ae | 2199 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2200 | if (!table) | |
2201 | return; | |
f31e084c | 2202 | |
d62a17ae | 2203 | apply_mask(p); |
2204 | rn = route_node_lookup(table, p); | |
2205 | if (!rn) | |
2206 | return; | |
f31e084c | 2207 | |
d62a17ae | 2208 | route_unlock_node(rn); |
2209 | if (!rn->info) | |
2210 | return; | |
f31e084c | 2211 | |
d62a17ae | 2212 | fec_print(rn->info, vty); |
f31e084c DS |
2213 | } |
2214 | ||
8f77d0ee DS |
2215 | static bool mpls_ftn_update_nexthop(int add, struct nexthop *nexthop, |
2216 | enum lsp_types_t type, mpls_label_t label) | |
2217 | { | |
2218 | if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE) | |
2219 | nexthop_add_labels(nexthop, type, 1, &label); | |
2220 | else if (!add && nexthop->nh_label_type == type) | |
2221 | nexthop_del_labels(nexthop); | |
2222 | else | |
2223 | return false; | |
2224 | ||
2225 | return true; | |
2226 | } | |
2227 | ||
ce549947 RW |
2228 | /* |
2229 | * Install/uninstall a FEC-To-NHLFE (FTN) binding. | |
2230 | */ | |
d62a17ae | 2231 | int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type, |
2232 | struct prefix *prefix, enum nexthop_types_t gtype, | |
d7c0a89a | 2233 | union g_addr *gate, ifindex_t ifindex, uint8_t distance, |
d62a17ae | 2234 | mpls_label_t out_label) |
2235 | { | |
2236 | struct route_table *table; | |
2237 | struct route_node *rn; | |
2238 | struct route_entry *re; | |
2239 | struct nexthop *nexthop; | |
8f77d0ee | 2240 | bool found; |
d62a17ae | 2241 | |
2242 | /* Lookup table. */ | |
2243 | table = zebra_vrf_table(family2afi(prefix->family), SAFI_UNICAST, | |
2244 | zvrf_id(zvrf)); | |
2245 | if (!table) | |
2246 | return -1; | |
2247 | ||
2248 | /* Lookup existing route */ | |
2249 | rn = route_node_get(table, prefix); | |
a2addae8 | 2250 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2251 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2252 | continue; | |
2253 | if (re->distance == distance) | |
2254 | break; | |
88d88a9c | 2255 | } |
ce549947 | 2256 | |
d62a17ae | 2257 | if (re == NULL) |
2258 | return -1; | |
2259 | ||
8f77d0ee | 2260 | found = false; |
7ee30f28 | 2261 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 2262 | switch (nexthop->type) { |
2263 | case NEXTHOP_TYPE_IPV4: | |
2264 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
2265 | if (gtype != NEXTHOP_TYPE_IPV4 | |
2266 | && gtype != NEXTHOP_TYPE_IPV4_IFINDEX) | |
2267 | continue; | |
2268 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, &gate->ipv4)) | |
2269 | continue; | |
2270 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
2271 | && nexthop->ifindex != ifindex) | |
2272 | continue; | |
8f77d0ee DS |
2273 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2274 | out_label)) | |
2275 | return 0; | |
2276 | found = true; | |
2277 | break; | |
d62a17ae | 2278 | case NEXTHOP_TYPE_IPV6: |
2279 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2280 | if (gtype != NEXTHOP_TYPE_IPV6 | |
2281 | && gtype != NEXTHOP_TYPE_IPV6_IFINDEX) | |
2282 | continue; | |
2283 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, &gate->ipv6)) | |
2284 | continue; | |
2285 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
2286 | && nexthop->ifindex != ifindex) | |
2287 | continue; | |
8f77d0ee DS |
2288 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2289 | out_label)) | |
2290 | return 0; | |
2291 | found = true; | |
2292 | break; | |
d62a17ae | 2293 | default: |
2294 | break; | |
2295 | } | |
2296 | } | |
d62a17ae | 2297 | |
8f77d0ee DS |
2298 | if (!found) |
2299 | return -1; | |
ce549947 | 2300 | |
d62a17ae | 2301 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
332ad713 | 2302 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2303 | rib_queue_add(rn); |
ce549947 | 2304 | |
d62a17ae | 2305 | return 0; |
ce549947 RW |
2306 | } |
2307 | ||
2308 | /* | |
2309 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
2310 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
2311 | * the out-label for an existing NHLFE (update case). | |
2312 | */ | |
d62a17ae | 2313 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2314 | mpls_label_t in_label, mpls_label_t out_label, | |
2315 | enum nexthop_types_t gtype, union g_addr *gate, | |
2316 | ifindex_t ifindex) | |
2317 | { | |
2318 | struct hash *lsp_table; | |
2319 | zebra_ile_t tmp_ile; | |
2320 | zebra_lsp_t *lsp; | |
2321 | zebra_nhlfe_t *nhlfe; | |
2322 | char buf[BUFSIZ]; | |
2323 | ||
2324 | /* Lookup table. */ | |
2325 | lsp_table = zvrf->lsp_table; | |
2326 | if (!lsp_table) | |
2327 | return -1; | |
2328 | ||
2329 | /* If entry is present, exit. */ | |
2330 | tmp_ile.in_label = in_label; | |
2331 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2332 | if (!lsp) | |
2333 | return -1; | |
2334 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2335 | if (nhlfe) { | |
2336 | struct nexthop *nh = nhlfe->nexthop; | |
2337 | ||
2338 | assert(nh); | |
2339 | assert(nh->nh_label); | |
2340 | ||
2341 | /* Clear deleted flag (in case it was set) */ | |
2342 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2343 | if (nh->nh_label->label[0] == out_label) | |
2344 | /* No change */ | |
2345 | return 0; | |
2346 | ||
2347 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2348 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2349 | zlog_debug( | |
2350 | "LSP in-label %u type %d nexthop %s " | |
2351 | "out-label changed to %u (old %u)", | |
2352 | in_label, type, buf, out_label, | |
2353 | nh->nh_label->label[0]); | |
2354 | } | |
2355 | ||
2356 | /* Update out label, trigger processing. */ | |
2357 | nh->nh_label->label[0] = out_label; | |
2358 | } else { | |
2359 | /* Add LSP entry to this nexthop */ | |
2360 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, out_label); | |
2361 | if (!nhlfe) | |
2362 | return -1; | |
2363 | ||
2364 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2365 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2366 | zlog_debug( | |
2367 | "Add LSP in-label %u type %d nexthop %s " | |
2368 | "out-label %u", | |
2369 | in_label, type, buf, out_label); | |
2370 | } | |
2371 | ||
2372 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
2373 | } | |
2374 | ||
2375 | /* Mark NHLFE, queue LSP for processing. */ | |
2376 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2377 | if (lsp_processq_add(lsp)) | |
2378 | return -1; | |
2379 | ||
2380 | return 0; | |
ce549947 RW |
2381 | } |
2382 | ||
2383 | /* | |
2384 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
2385 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
2386 | */ | |
d62a17ae | 2387 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2388 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
2389 | union g_addr *gate, ifindex_t ifindex) | |
2390 | { | |
2391 | struct hash *lsp_table; | |
2392 | zebra_ile_t tmp_ile; | |
2393 | zebra_lsp_t *lsp; | |
2394 | zebra_nhlfe_t *nhlfe; | |
2395 | char buf[BUFSIZ]; | |
2396 | ||
2397 | /* Lookup table. */ | |
2398 | lsp_table = zvrf->lsp_table; | |
2399 | if (!lsp_table) | |
2400 | return -1; | |
2401 | ||
2402 | /* If entry is not present, exit. */ | |
2403 | tmp_ile.in_label = in_label; | |
2404 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2405 | if (!lsp) | |
2406 | return 0; | |
2407 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2408 | if (!nhlfe) | |
2409 | return 0; | |
2410 | ||
2411 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2412 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2413 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
2414 | in_label, type, buf, nhlfe->flags); | |
2415 | } | |
2416 | ||
2417 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
2418 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
2419 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2420 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2421 | if (lsp_processq_add(lsp)) | |
2422 | return -1; | |
2423 | } else { | |
2424 | nhlfe_del(nhlfe); | |
2425 | ||
2426 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
2427 | if (!lsp->nhlfe_list | |
2428 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
2429 | if (IS_ZEBRA_DEBUG_MPLS) | |
2430 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
2431 | lsp->ile.in_label, lsp->flags); | |
2432 | ||
2433 | lsp = hash_release(lsp_table, &lsp->ile); | |
2434 | if (lsp) | |
2435 | XFREE(MTYPE_LSP, lsp); | |
2436 | } | |
2437 | } | |
2438 | return 0; | |
ce549947 RW |
2439 | } |
2440 | ||
2441 | /* | |
2442 | * Uninstall all LDP NHLFEs for a particular LSP forwarding entry. | |
2443 | * If no other NHLFEs exist, the entry would be deleted. | |
2444 | */ | |
d62a17ae | 2445 | void mpls_ldp_lsp_uninstall_all(struct hash_backet *backet, void *ctxt) |
ce549947 | 2446 | { |
d62a17ae | 2447 | zebra_lsp_t *lsp; |
2448 | struct hash *lsp_table; | |
ce549947 | 2449 | |
d62a17ae | 2450 | lsp = (zebra_lsp_t *)backet->data; |
9ea660be | 2451 | if (!lsp->nhlfe_list) |
d62a17ae | 2452 | return; |
ce549947 | 2453 | |
d62a17ae | 2454 | lsp_table = ctxt; |
2455 | if (!lsp_table) | |
2456 | return; | |
ce549947 | 2457 | |
d62a17ae | 2458 | mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_LDP); |
ce549947 RW |
2459 | } |
2460 | ||
2461 | /* | |
2462 | * Uninstall all LDP FEC-To-NHLFE (FTN) bindings of the given address-family. | |
2463 | */ | |
d62a17ae | 2464 | void mpls_ldp_ftn_uninstall_all(struct zebra_vrf *zvrf, int afi) |
2465 | { | |
2466 | struct route_table *table; | |
2467 | struct route_node *rn; | |
2468 | struct route_entry *re; | |
2469 | struct nexthop *nexthop; | |
2470 | int update; | |
2471 | ||
2472 | /* Process routes of interested address-families. */ | |
2473 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2474 | if (!table) | |
2475 | return; | |
2476 | ||
2477 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
2478 | update = 0; | |
a2addae8 | 2479 | RNODE_FOREACH_RE (rn, re) { |
7ee30f28 | 2480 | for (nexthop = re->ng.nexthop; nexthop; |
407c87a6 DS |
2481 | nexthop = nexthop->next) { |
2482 | if (nexthop->nh_label_type != ZEBRA_LSP_LDP) | |
2483 | continue; | |
2484 | ||
d62a17ae | 2485 | nexthop_del_labels(nexthop); |
2486 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2487 | SET_FLAG(re->status, | |
332ad713 | 2488 | ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2489 | update = 1; |
2490 | } | |
407c87a6 | 2491 | } |
d62a17ae | 2492 | |
2493 | if (update) | |
2494 | rib_queue_add(rn); | |
2495 | } | |
ce549947 RW |
2496 | } |
2497 | ||
1c1cf002 | 2498 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 2499 | /* |
2500 | * Check that the label values used in LSP creation are consistent. The | |
2501 | * main criteria is that if there is ECMP, the label operation must still | |
2502 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
2503 | * to current HW restrictions. | |
2504 | */ | |
d62a17ae | 2505 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
2506 | mpls_label_t in_label, | |
2507 | mpls_label_t out_label, | |
2508 | enum nexthop_types_t gtype, | |
2509 | union g_addr *gate, ifindex_t ifindex) | |
2510 | { | |
2511 | struct hash *slsp_table; | |
2512 | zebra_ile_t tmp_ile; | |
2513 | zebra_slsp_t *slsp; | |
2514 | zebra_snhlfe_t *snhlfe; | |
2515 | ||
2516 | /* Lookup table. */ | |
2517 | slsp_table = zvrf->slsp_table; | |
2518 | if (!slsp_table) | |
2519 | return 0; | |
2520 | ||
2521 | /* If entry is not present, exit. */ | |
2522 | tmp_ile.in_label = in_label; | |
2523 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
2524 | if (!slsp) | |
2525 | return 1; | |
2526 | ||
2527 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2528 | if (snhlfe) { | |
2529 | if (snhlfe->out_label == out_label) | |
2530 | return 1; | |
2531 | ||
2532 | /* If not only NHLFE, cannot allow label change. */ | |
2533 | if (snhlfe != slsp->snhlfe_list || snhlfe->next) | |
2534 | return 0; | |
2535 | } else { | |
2536 | /* If other NHLFEs exist, label operation must match. */ | |
2537 | if (slsp->snhlfe_list) { | |
2538 | int cur_op, new_op; | |
2539 | ||
2540 | cur_op = (slsp->snhlfe_list->out_label | |
70e98a7f DS |
2541 | == MPLS_LABEL_IMPLICIT_NULL); |
2542 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); | |
d62a17ae | 2543 | if (cur_op != new_op) |
2544 | return 0; | |
2545 | } | |
2546 | } | |
2547 | ||
2548 | /* Label values are good. */ | |
2549 | return 1; | |
7758e3f3 | 2550 | } |
1c1cf002 | 2551 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 2552 | |
2553 | /* | |
2554 | * Add static LSP entry. This may be the first entry for this incoming label | |
2555 | * or an additional nexthop; an existing entry may also have outgoing label | |
2556 | * changed. | |
2557 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
2558 | * NHLFEs). | |
2559 | */ | |
d62a17ae | 2560 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
2561 | mpls_label_t out_label, | |
2562 | enum nexthop_types_t gtype, union g_addr *gate, | |
2563 | ifindex_t ifindex) | |
2564 | { | |
2565 | struct hash *slsp_table; | |
2566 | zebra_ile_t tmp_ile; | |
2567 | zebra_slsp_t *slsp; | |
2568 | zebra_snhlfe_t *snhlfe; | |
2569 | char buf[BUFSIZ]; | |
2570 | ||
2571 | /* Lookup table. */ | |
2572 | slsp_table = zvrf->slsp_table; | |
2573 | if (!slsp_table) | |
2574 | return -1; | |
2575 | ||
2576 | /* If entry is present, exit. */ | |
2577 | tmp_ile.in_label = in_label; | |
2578 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
2579 | if (!slsp) | |
2580 | return -1; | |
2581 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2582 | if (snhlfe) { | |
2583 | if (snhlfe->out_label == out_label) | |
2584 | /* No change */ | |
2585 | return 0; | |
2586 | ||
2587 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2588 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2589 | zlog_debug( | |
2590 | "Upd static LSP in-label %u nexthop %s " | |
2591 | "out-label %u (old %u)", | |
2592 | in_label, buf, out_label, snhlfe->out_label); | |
2593 | } | |
2594 | snhlfe->out_label = out_label; | |
2595 | } else { | |
2596 | /* Add static LSP entry to this nexthop */ | |
2597 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
2598 | if (!snhlfe) | |
2599 | return -1; | |
2600 | ||
2601 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2602 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2603 | zlog_debug( | |
2604 | "Add static LSP in-label %u nexthop %s out-label %u", | |
2605 | in_label, buf, out_label); | |
2606 | } | |
2607 | } | |
2608 | ||
2609 | /* (Re)Install LSP in the main table. */ | |
2610 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, out_label, gtype, | |
2611 | gate, ifindex)) | |
2612 | return -1; | |
2613 | ||
2614 | return 0; | |
7758e3f3 | 2615 | } |
2616 | ||
2617 | /* | |
2618 | * Delete static LSP entry. This may be the delete of one particular | |
2619 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
2620 | * all NHLFEs). | |
2621 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
2622 | * LSP configuration. | |
2623 | */ | |
d62a17ae | 2624 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
2625 | enum nexthop_types_t gtype, union g_addr *gate, | |
2626 | ifindex_t ifindex) | |
2627 | { | |
2628 | struct hash *slsp_table; | |
2629 | zebra_ile_t tmp_ile; | |
2630 | zebra_slsp_t *slsp; | |
2631 | zebra_snhlfe_t *snhlfe; | |
2632 | ||
2633 | /* Lookup table. */ | |
2634 | slsp_table = zvrf->slsp_table; | |
2635 | if (!slsp_table) | |
2636 | return -1; | |
2637 | ||
2638 | /* If entry is not present, exit. */ | |
2639 | tmp_ile.in_label = in_label; | |
2640 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
2641 | if (!slsp) | |
2642 | return 0; | |
2643 | ||
2644 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
2645 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
2646 | if (IS_ZEBRA_DEBUG_MPLS) | |
2647 | zlog_debug("Del static LSP in-label %u", in_label); | |
2648 | ||
2649 | /* Uninstall entire LSP from the main table. */ | |
2650 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
2651 | ||
2652 | /* Delete all static NHLFEs */ | |
2653 | snhlfe_del_all(slsp); | |
2654 | } else { | |
2655 | /* Find specific NHLFE, exit if not found. */ | |
2656 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2657 | if (!snhlfe) | |
2658 | return 0; | |
2659 | ||
2660 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2661 | char buf[BUFSIZ]; | |
2662 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2663 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
2664 | in_label, buf); | |
2665 | } | |
2666 | ||
2667 | /* Uninstall LSP from the main table. */ | |
2668 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
2669 | gate, ifindex); | |
2670 | ||
2671 | /* Delete static LSP NHLFE */ | |
2672 | snhlfe_del(snhlfe); | |
2673 | } | |
2674 | ||
2675 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
2676 | * above. */ | |
2677 | if (!slsp->snhlfe_list) { | |
2678 | slsp = hash_release(slsp_table, &tmp_ile); | |
2679 | if (slsp) | |
2680 | XFREE(MTYPE_SLSP, slsp); | |
2681 | } | |
2682 | ||
2683 | return 0; | |
7758e3f3 | 2684 | } |
2685 | ||
40c7bdb0 | 2686 | /* |
2687 | * Schedule all MPLS label forwarding entries for processing. | |
2688 | * Called upon changes that may affect one or more of them such as | |
2689 | * interface or nexthop state changes. | |
2690 | */ | |
d62a17ae | 2691 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 2692 | { |
d62a17ae | 2693 | if (!zvrf) |
2694 | return; | |
2695 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 2696 | } |
2697 | ||
3ab18ff2 | 2698 | /* |
2699 | * Display MPLS label forwarding table for a specific LSP | |
2700 | * (VTY command handler). | |
2701 | */ | |
d62a17ae | 2702 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 2703 | mpls_label_t label, bool use_json) |
3ab18ff2 | 2704 | { |
d62a17ae | 2705 | struct hash *lsp_table; |
2706 | zebra_lsp_t *lsp; | |
2707 | zebra_ile_t tmp_ile; | |
2708 | json_object *json = NULL; | |
3ab18ff2 | 2709 | |
d62a17ae | 2710 | /* Lookup table. */ |
2711 | lsp_table = zvrf->lsp_table; | |
2712 | if (!lsp_table) | |
2713 | return; | |
3ab18ff2 | 2714 | |
d62a17ae | 2715 | /* If entry is not present, exit. */ |
2716 | tmp_ile.in_label = label; | |
2717 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2718 | if (!lsp) | |
2719 | return; | |
3ab18ff2 | 2720 | |
d62a17ae | 2721 | if (use_json) { |
2722 | json = lsp_json(lsp); | |
9d303b37 DL |
2723 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
2724 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 2725 | json_object_free(json); |
2726 | } else | |
2727 | lsp_print(lsp, (void *)vty); | |
3ab18ff2 | 2728 | } |
2729 | ||
2730 | /* | |
2731 | * Display MPLS label forwarding table (VTY command handler). | |
2732 | */ | |
d62a17ae | 2733 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 2734 | bool use_json) |
d62a17ae | 2735 | { |
2736 | char buf[BUFSIZ]; | |
2737 | json_object *json = NULL; | |
2738 | zebra_lsp_t *lsp = NULL; | |
2739 | zebra_nhlfe_t *nhlfe = NULL; | |
2740 | struct nexthop *nexthop = NULL; | |
2741 | struct listnode *node = NULL; | |
2742 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
2743 | ||
2744 | if (use_json) { | |
2745 | json = json_object_new_object(); | |
2746 | ||
2747 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
2748 | json_object_object_add( | |
2749 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
2750 | lsp_json(lsp)); | |
2751 | ||
9d303b37 DL |
2752 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
2753 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 2754 | json_object_free(json); |
2755 | } else { | |
2756 | vty_out(vty, " Inbound Outbound\n"); | |
2757 | vty_out(vty, " Label Type Nexthop Label\n"); | |
2758 | vty_out(vty, "-------- ------- --------------- --------\n"); | |
2759 | ||
2760 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
2761 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
2762 | nhlfe = nhlfe->next) { | |
2763 | vty_out(vty, "%8d %7s ", lsp->ile.in_label, | |
2764 | nhlfe_type2str(nhlfe->type)); | |
2765 | nexthop = nhlfe->nexthop; | |
2766 | ||
2767 | switch (nexthop->type) { | |
996c9314 | 2768 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 2769 | struct zebra_ns *zns; |
b9abd9ad DS |
2770 | struct interface *ifp; |
2771 | ||
86f07f44 PG |
2772 | zns = zebra_ns_lookup(NS_DEFAULT); |
2773 | ifp = if_lookup_by_index_per_ns( | |
2774 | zns, | |
2775 | nexthop->ifindex); | |
b9abd9ad DS |
2776 | vty_out(vty, "%15s", ifp->name); |
2777 | break; | |
2778 | } | |
d62a17ae | 2779 | case NEXTHOP_TYPE_IPV4: |
2780 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
2781 | vty_out(vty, "%15s", | |
2782 | inet_ntoa(nexthop->gate.ipv4)); | |
2783 | break; | |
2784 | case NEXTHOP_TYPE_IPV6: | |
2785 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2786 | vty_out(vty, "%15s", | |
2787 | inet_ntop(AF_INET6, | |
2788 | &nexthop->gate.ipv6, | |
2789 | buf, BUFSIZ)); | |
2790 | break; | |
2791 | default: | |
2792 | break; | |
2793 | } | |
2794 | ||
b9abd9ad | 2795 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
fc5cca9f DS |
2796 | vty_out(vty, " %8s\n", |
2797 | mpls_label2str( | |
2798 | nexthop->nh_label | |
2799 | ->num_labels, | |
2800 | &nexthop->nh_label | |
2801 | ->label[0], | |
2802 | buf, BUFSIZ, 1)); | |
b9abd9ad DS |
2803 | else |
2804 | vty_out(vty, "\n"); | |
d62a17ae | 2805 | } |
2806 | } | |
2807 | ||
2808 | vty_out(vty, "\n"); | |
2809 | } | |
2810 | ||
affe9e99 | 2811 | list_delete_and_null(&lsp_list); |
3ab18ff2 | 2812 | } |
2813 | ||
7758e3f3 | 2814 | /* |
2815 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
2816 | */ | |
d62a17ae | 2817 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
2818 | { | |
2819 | zebra_slsp_t *slsp; | |
2820 | zebra_snhlfe_t *snhlfe; | |
2821 | struct listnode *node; | |
2822 | struct list *slsp_list = | |
2823 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
2824 | ||
2825 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
2826 | for (snhlfe = slsp->snhlfe_list; snhlfe; | |
2827 | snhlfe = snhlfe->next) { | |
0af35d90 | 2828 | char buf[BUFSIZ]; |
d62a17ae | 2829 | char lstr[30]; |
2830 | ||
0af35d90 | 2831 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 2832 | switch (snhlfe->out_label) { |
70e98a7f DS |
2833 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
2834 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 2835 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
2836 | break; | |
70e98a7f | 2837 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 2838 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
2839 | break; | |
2840 | default: | |
2841 | sprintf(lstr, "%u", snhlfe->out_label); | |
2842 | break; | |
2843 | } | |
2844 | ||
2845 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
2846 | buf, lstr); | |
2847 | } | |
2848 | } | |
b78b820d | 2849 | |
affe9e99 | 2850 | list_delete_and_null(&slsp_list); |
d62a17ae | 2851 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 2852 | } |
2853 | ||
1b6d5c7e VV |
2854 | /* |
2855 | * Add/update global label block. | |
2856 | */ | |
d7c0a89a QY |
2857 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
2858 | uint32_t end_label) | |
1b6d5c7e | 2859 | { |
d62a17ae | 2860 | zvrf->mpls_srgb.start_label = start_label; |
2861 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 2862 | |
d62a17ae | 2863 | /* Evaluate registered FECs to see if any get a label or not. */ |
2864 | fec_evaluate(zvrf); | |
2865 | return 0; | |
1b6d5c7e VV |
2866 | } |
2867 | ||
2868 | /* | |
2869 | * Delete global label block. | |
2870 | */ | |
d62a17ae | 2871 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 2872 | { |
d62a17ae | 2873 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
2874 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 2875 | |
d62a17ae | 2876 | /* Process registered FECs to clear their local label, if needed. */ |
2877 | fec_evaluate(zvrf); | |
2878 | return 0; | |
1b6d5c7e VV |
2879 | } |
2880 | ||
2881 | /* | |
2882 | * Display MPLS global label block configuration (VTY command handler). | |
2883 | */ | |
d62a17ae | 2884 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 2885 | { |
d62a17ae | 2886 | if (zvrf->mpls_srgb.start_label == 0) |
2887 | return 0; | |
1b6d5c7e | 2888 | |
d62a17ae | 2889 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
2890 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
2891 | vty_out(vty, "mpls label global-block %u %u\n", | |
2892 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
2893 | } | |
1b6d5c7e | 2894 | |
d62a17ae | 2895 | return 1; |
1b6d5c7e VV |
2896 | } |
2897 | ||
84915b0a | 2898 | /* |
2899 | * Called when VRF becomes inactive, cleans up information but keeps | |
2900 | * the table itself. | |
2901 | * NOTE: Currently supported only for default VRF. | |
2902 | */ | |
2903 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
2904 | { | |
2905 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
2906 | } | |
2907 | ||
40c7bdb0 | 2908 | /* |
2909 | * Called upon process exiting, need to delete LSP forwarding | |
2910 | * entries from the kernel. | |
2911 | * NOTE: Currently supported only for default VRF. | |
2912 | */ | |
d62a17ae | 2913 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 2914 | { |
d62a17ae | 2915 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
2916 | hash_clean(zvrf->lsp_table, NULL); | |
2917 | hash_free(zvrf->lsp_table); | |
2918 | hash_clean(zvrf->slsp_table, NULL); | |
2919 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
2920 | route_table_finish(zvrf->fec_table[AFI_IP]); |
2921 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 2922 | } |
2923 | ||
7758e3f3 | 2924 | /* |
2925 | * Allocate MPLS tables for this VRF and do other initialization. | |
2926 | * NOTE: Currently supported only for default VRF. | |
2927 | */ | |
d62a17ae | 2928 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 2929 | { |
d62a17ae | 2930 | if (!zvrf) |
2931 | return; | |
996c9314 LB |
2932 | zvrf->slsp_table = |
2933 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
2934 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 2935 | zvrf->fec_table[AFI_IP] = route_table_init(); |
2936 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
2937 | zvrf->mpls_flags = 0; | |
2938 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
2939 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 2940 | } |
2941 | ||
2942 | /* | |
2943 | * Global MPLS initialization. | |
2944 | */ | |
d62a17ae | 2945 | void zebra_mpls_init(void) |
7758e3f3 | 2946 | { |
d62a17ae | 2947 | mpls_enabled = 0; |
33c32282 | 2948 | |
d62a17ae | 2949 | if (mpls_kernel_init() < 0) { |
e914ccbe | 2950 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 2951 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 2952 | return; |
2953 | } | |
fe6c7157 | 2954 | |
d62a17ae | 2955 | if (!mpls_processq_init(&zebrad)) |
2956 | mpls_enabled = 1; | |
453844ab | 2957 | |
21ccc0cf | 2958 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
7758e3f3 | 2959 | } |