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7758e3f3 | 1 | /* Zebra MPLS code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7758e3f3 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
7758e3f3 | 26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
a971aeb6 | 37 | #include "termtable.h" |
b78b820d | 38 | #include "lib/json.h" |
7758e3f3 | 39 | |
40 | #include "zebra/rib.h" | |
41 | #include "zebra/rt.h" | |
86f07f44 | 42 | #include "zebra/interface.h" |
7758e3f3 | 43 | #include "zebra/zserv.h" |
3801e764 | 44 | #include "zebra/zebra_router.h" |
7758e3f3 | 45 | #include "zebra/redistribute.h" |
46 | #include "zebra/debug.h" | |
47 | #include "zebra/zebra_memory.h" | |
48 | #include "zebra/zebra_vrf.h" | |
49 | #include "zebra/zebra_mpls.h" | |
43e52561 | 50 | #include "zebra/zebra_errors.h" |
7758e3f3 | 51 | |
d62a17ae | 52 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object") |
53 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object") | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, SLSP, "MPLS static LSP config") | |
55 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object") | |
56 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE, "MPLS static nexthop object") | |
57 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE_IFNAME, "MPLS static nexthop ifname") | |
7758e3f3 | 58 | |
fe6c7157 RW |
59 | int mpls_enabled; |
60 | ||
7758e3f3 | 61 | /* static function declarations */ |
f31e084c | 62 | |
d62a17ae | 63 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
64 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
65 | zebra_fec_t *fec); | |
d62a17ae | 66 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
67 | struct route_node *rn, struct route_entry *re); | |
68 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
69 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
70 | mpls_label_t old_label); | |
71 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
72 | static void fec_update_clients(zebra_fec_t *fec); | |
73 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
74 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
75 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
76 | mpls_label_t label, uint32_t flags, |
77 | uint32_t label_index); | |
d62a17ae | 78 | static int fec_del(zebra_fec_t *fec); |
79 | ||
d8b87afe | 80 | static unsigned int label_hash(const void *p); |
74df8d6d | 81 | static bool label_cmp(const void *p1, const void *p2); |
d62a17ae | 82 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
83 | struct nexthop *nexthop); | |
84 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
85 | struct nexthop *nexthop); | |
86 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
87 | ||
88 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp); | |
e3b78da8 TB |
89 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt); |
90 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt); | |
d62a17ae | 91 | static wq_item_status lsp_process(struct work_queue *wq, void *data); |
92 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
93 | static void lsp_processq_complete(struct work_queue *wq); | |
94 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
95 | static void *lsp_alloc(void *p); | |
96 | ||
97 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size); | |
98 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, | |
99 | union g_addr *gate, ifindex_t ifindex); | |
100 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
101 | enum nexthop_types_t gtype, union g_addr *gate, | |
102 | ifindex_t ifindex); | |
103 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
104 | enum nexthop_types_t gtype, union g_addr *gate, | |
105 | ifindex_t ifindex, mpls_label_t out_label); | |
106 | static int nhlfe_del(zebra_nhlfe_t *snhlfe); | |
107 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, | |
8ecdb26e | 108 | struct mpls_label_stack *nh_label); |
d62a17ae | 109 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
110 | enum lsp_types_t type); | |
111 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
112 | mpls_label_t in_label); | |
113 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty); | |
114 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt); | |
115 | static void *slsp_alloc(void *p); | |
116 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, | |
117 | union g_addr *gate, ifindex_t ifindex); | |
118 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, | |
119 | enum nexthop_types_t gtype, | |
120 | union g_addr *gate, ifindex_t ifindex); | |
121 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, | |
122 | enum nexthop_types_t gtype, | |
123 | union g_addr *gate, ifindex_t ifindex, | |
124 | mpls_label_t out_label); | |
125 | static int snhlfe_del(zebra_snhlfe_t *snhlfe); | |
126 | static int snhlfe_del_all(zebra_slsp_t *slsp); | |
127 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size); | |
651105b5 RW |
128 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
129 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
130 | int afi, enum lsp_types_t lsp_type); | |
7758e3f3 | 131 | |
132 | ||
133 | /* Static functions */ | |
134 | ||
3d468f66 DS |
135 | /* |
136 | * Handle failure in LSP install, clear flags for NHLFE. | |
137 | */ | |
138 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
139 | { | |
140 | zebra_nhlfe_t *nhlfe; | |
141 | struct nexthop *nexthop; | |
142 | ||
143 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
144 | nexthop = nhlfe->nexthop; | |
145 | if (!nexthop) | |
146 | continue; | |
147 | ||
148 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
149 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
150 | } | |
151 | } | |
152 | ||
a64448ba DS |
153 | /* |
154 | * Install label forwarding entry based on labeled-route entry. | |
155 | */ | |
d62a17ae | 156 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
157 | struct route_node *rn, struct route_entry *re) | |
158 | { | |
159 | struct hash *lsp_table; | |
160 | zebra_ile_t tmp_ile; | |
161 | zebra_lsp_t *lsp; | |
162 | zebra_nhlfe_t *nhlfe; | |
163 | struct nexthop *nexthop; | |
164 | enum lsp_types_t lsp_type; | |
165 | char buf[BUFSIZ]; | |
166 | int added, changed; | |
167 | ||
168 | /* Lookup table. */ | |
169 | lsp_table = zvrf->lsp_table; | |
170 | if (!lsp_table) | |
171 | return -1; | |
172 | ||
173 | lsp_type = lsp_type_from_re_type(re->type); | |
174 | added = changed = 0; | |
175 | ||
176 | /* Locate or allocate LSP entry. */ | |
177 | tmp_ile.in_label = label; | |
178 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
179 | if (!lsp) | |
180 | return -1; | |
181 | ||
182 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
183 | * recursive nexthops right now, because intermediate hops won't | |
184 | * understand | |
185 | * the label advertised by the recursive nexthop (plus we don't have the | |
186 | * logic yet to push multiple labels). | |
187 | */ | |
6b468511 | 188 | for (nexthop = re->ng->nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 189 | /* Skip inactive and recursive entries. */ |
190 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
191 | continue; | |
192 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
193 | continue; | |
194 | ||
195 | nhlfe = nhlfe_find(lsp, lsp_type, nexthop->type, &nexthop->gate, | |
196 | nexthop->ifindex); | |
197 | if (nhlfe) { | |
198 | /* Clear deleted flag (in case it was set) */ | |
199 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
200 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
201 | /* No change */ | |
202 | continue; | |
203 | ||
204 | ||
205 | if (IS_ZEBRA_DEBUG_MPLS) { | |
206 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
207 | zlog_debug( | |
208 | "LSP in-label %u type %d nexthop %s " | |
209 | "out-label changed", | |
210 | lsp->ile.in_label, lsp_type, buf); | |
211 | } | |
212 | ||
213 | /* Update out label, trigger processing. */ | |
214 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
215 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
216 | changed++; | |
217 | } else { | |
218 | /* Add LSP entry to this nexthop */ | |
219 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
220 | &nexthop->gate, nexthop->ifindex, | |
221 | nexthop->nh_label->label[0]); | |
222 | if (!nhlfe) | |
223 | return -1; | |
224 | ||
225 | if (IS_ZEBRA_DEBUG_MPLS) { | |
226 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
227 | zlog_debug( | |
228 | "Add LSP in-label %u type %d nexthop %s " | |
229 | "out-label %u", | |
230 | lsp->ile.in_label, lsp_type, buf, | |
231 | nexthop->nh_label->label[0]); | |
232 | } | |
233 | ||
234 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
235 | ||
236 | /* Mark NHLFE as changed. */ | |
237 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
238 | added++; | |
239 | } | |
240 | } | |
241 | ||
242 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
243 | * case), delete the LSP entry; this case results in somewhat ugly | |
244 | * logging. | |
245 | */ | |
246 | if (added || changed) { | |
247 | if (lsp_processq_add(lsp)) | |
248 | return -1; | |
249 | } else if (!lsp->nhlfe_list | |
250 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
251 | if (IS_ZEBRA_DEBUG_MPLS) | |
252 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
253 | lsp->ile.in_label, lsp->flags); | |
254 | ||
255 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 256 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 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); | |
0a22ddfb | 319 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 320 | } |
321 | ||
322 | return 0; | |
a64448ba DS |
323 | } |
324 | ||
28d58fd7 VV |
325 | /* |
326 | * This function is invoked upon change to label block configuration; it | |
327 | * will walk all registered FECs with label-index and appropriately update | |
328 | * their local labels and trigger client updates. | |
329 | */ | |
d62a17ae | 330 | static void fec_evaluate(struct zebra_vrf *zvrf) |
331 | { | |
332 | struct route_node *rn; | |
333 | zebra_fec_t *fec; | |
d7c0a89a | 334 | uint32_t old_label, new_label; |
d62a17ae | 335 | int af; |
336 | char buf[BUFSIZ]; | |
337 | ||
338 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
339 | if (zvrf->fec_table[af] == NULL) | |
340 | continue; | |
341 | ||
342 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
343 | rn = route_next(rn)) { | |
344 | if ((fec = rn->info) == NULL) | |
345 | continue; | |
346 | ||
347 | /* Skip configured FECs and those without a label index. | |
348 | */ | |
349 | if (fec->flags & FEC_FLAG_CONFIGURED | |
350 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
351 | continue; | |
352 | ||
353 | if (IS_ZEBRA_DEBUG_MPLS) | |
354 | prefix2str(&rn->p, buf, BUFSIZ); | |
355 | ||
356 | /* Save old label, determine new label. */ | |
357 | old_label = fec->label; | |
358 | new_label = | |
359 | zvrf->mpls_srgb.start_label + fec->label_index; | |
360 | if (new_label >= zvrf->mpls_srgb.end_label) | |
361 | new_label = MPLS_INVALID_LABEL; | |
362 | ||
363 | /* If label has changed, update FEC and clients. */ | |
364 | if (new_label == old_label) | |
365 | continue; | |
366 | ||
367 | if (IS_ZEBRA_DEBUG_MPLS) | |
368 | zlog_debug( | |
369 | "Update fec %s new label %u upon label block", | |
370 | buf, new_label); | |
371 | ||
372 | fec->label = new_label; | |
373 | fec_update_clients(fec); | |
374 | ||
375 | /* Update label forwarding entries appropriately */ | |
376 | fec_change_update_lsp(zvrf, fec, old_label); | |
377 | } | |
378 | } | |
28d58fd7 VV |
379 | } |
380 | ||
381 | /* | |
382 | * Derive (if possible) and update the local label for the FEC based on | |
383 | * its label index. The index is "acceptable" if it falls within the | |
384 | * globally configured label block (SRGB). | |
385 | */ | |
d7c0a89a QY |
386 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
387 | zebra_fec_t *fec) | |
28d58fd7 | 388 | { |
d7c0a89a | 389 | uint32_t label; |
28d58fd7 | 390 | |
d62a17ae | 391 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
392 | && zvrf->mpls_srgb.start_label | |
393 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
394 | < zvrf->mpls_srgb.end_label)) | |
395 | fec->label = label; | |
396 | else | |
397 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 398 | |
d62a17ae | 399 | return fec->label; |
28d58fd7 VV |
400 | } |
401 | ||
a64448ba DS |
402 | /* |
403 | * There is a change for this FEC. Install or uninstall label forwarding | |
404 | * entries, as appropriate. | |
405 | */ | |
d62a17ae | 406 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
407 | mpls_label_t old_label) | |
a64448ba | 408 | { |
d62a17ae | 409 | struct route_table *table; |
410 | struct route_node *rn; | |
411 | struct route_entry *re; | |
412 | afi_t afi; | |
a64448ba | 413 | |
d62a17ae | 414 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
415 | if (old_label != MPLS_INVALID_LABEL |
416 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 417 | lsp_uninstall(zvrf, old_label); |
a64448ba | 418 | |
d62a17ae | 419 | /* Install label forwarding entry corr. to new label, if needed. */ |
420 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 421 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 422 | return 0; |
a64448ba | 423 | |
d62a17ae | 424 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
425 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
426 | if (!table) | |
427 | return 0; | |
a64448ba | 428 | |
d62a17ae | 429 | /* See if labeled route exists. */ |
430 | rn = route_node_lookup(table, &fec->rn->p); | |
431 | if (!rn) | |
432 | return 0; | |
a64448ba | 433 | |
a2addae8 | 434 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 435 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
436 | break; | |
437 | } | |
a64448ba | 438 | |
d62a17ae | 439 | if (!re || !zebra_rib_labeled_unicast(re)) |
440 | return 0; | |
a64448ba | 441 | |
d62a17ae | 442 | if (lsp_install(zvrf, fec->label, rn, re)) |
443 | return -1; | |
a64448ba | 444 | |
d62a17ae | 445 | return 0; |
a64448ba DS |
446 | } |
447 | ||
5aba114a DS |
448 | /* |
449 | * Inform about FEC to a registered client. | |
450 | */ | |
d62a17ae | 451 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 452 | { |
d62a17ae | 453 | struct stream *s; |
454 | struct route_node *rn; | |
5aba114a | 455 | |
d62a17ae | 456 | rn = fec->rn; |
5aba114a | 457 | |
d62a17ae | 458 | /* Get output stream. */ |
1002497a | 459 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 460 | |
7cf15b25 | 461 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 462 | |
d62a17ae | 463 | stream_putw(s, rn->p.family); |
464 | stream_put_prefix(s, &rn->p); | |
465 | stream_putl(s, fec->label); | |
466 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 467 | return zserv_send_message(client, s); |
5aba114a DS |
468 | } |
469 | ||
470 | /* | |
471 | * Update all registered clients about this FEC. Caller should've updated | |
472 | * FEC and ensure no duplicate updates. | |
473 | */ | |
d62a17ae | 474 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 475 | { |
d62a17ae | 476 | struct listnode *node; |
477 | struct zserv *client; | |
5aba114a | 478 | |
d62a17ae | 479 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
480 | if (IS_ZEBRA_DEBUG_MPLS) | |
481 | zlog_debug("Update client %s", | |
482 | zebra_route_string(client->proto)); | |
483 | fec_send(fec, client); | |
484 | } | |
5aba114a DS |
485 | } |
486 | ||
487 | ||
f31e084c DS |
488 | /* |
489 | * Print a FEC-label binding entry. | |
490 | */ | |
d62a17ae | 491 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
492 | { | |
493 | struct route_node *rn; | |
494 | struct listnode *node; | |
495 | struct zserv *client; | |
496 | char buf[BUFSIZ]; | |
497 | ||
498 | rn = fec->rn; | |
499 | prefix2str(&rn->p, buf, BUFSIZ); | |
500 | vty_out(vty, "%s\n", buf); | |
501 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
502 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
503 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
504 | vty_out(vty, "\n"); | |
505 | if (!list_isempty(fec->client_list)) { | |
506 | vty_out(vty, " Client list:"); | |
507 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
508 | vty_out(vty, " %s(fd %d)", | |
509 | zebra_route_string(client->proto), | |
510 | client->sock); | |
511 | vty_out(vty, "\n"); | |
512 | } | |
f31e084c DS |
513 | } |
514 | ||
515 | /* | |
516 | * Locate FEC-label binding that matches with passed info. | |
517 | */ | |
d62a17ae | 518 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 519 | { |
d62a17ae | 520 | struct route_node *rn; |
f31e084c | 521 | |
d62a17ae | 522 | apply_mask(p); |
523 | rn = route_node_lookup(table, p); | |
524 | if (!rn) | |
525 | return NULL; | |
f31e084c | 526 | |
d62a17ae | 527 | route_unlock_node(rn); |
528 | return (rn->info); | |
f31e084c DS |
529 | } |
530 | ||
531 | /* | |
5aba114a DS |
532 | * Add a FEC. This may be upon a client registering for a binding |
533 | * or when a binding is configured. | |
f31e084c | 534 | */ |
d62a17ae | 535 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
536 | mpls_label_t label, uint32_t flags, |
537 | uint32_t label_index) | |
f31e084c | 538 | { |
d62a17ae | 539 | struct route_node *rn; |
540 | zebra_fec_t *fec; | |
f31e084c | 541 | |
d62a17ae | 542 | apply_mask(p); |
f31e084c | 543 | |
d62a17ae | 544 | /* Lookup (or add) route node.*/ |
545 | rn = route_node_get(table, p); | |
546 | if (!rn) | |
547 | return NULL; | |
f31e084c | 548 | |
d62a17ae | 549 | fec = rn->info; |
f31e084c | 550 | |
d62a17ae | 551 | if (!fec) { |
552 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 553 | |
d62a17ae | 554 | rn->info = fec; |
555 | fec->rn = rn; | |
556 | fec->label = label; | |
557 | fec->client_list = list_new(); | |
558 | } else | |
559 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 560 | |
d62a17ae | 561 | fec->label_index = label_index; |
562 | fec->flags = flags; | |
f31e084c | 563 | |
d62a17ae | 564 | return fec; |
f31e084c DS |
565 | } |
566 | ||
567 | /* | |
5aba114a DS |
568 | * Delete a FEC. This may be upon the last client deregistering for |
569 | * a FEC and no binding exists or when the binding is deleted and there | |
570 | * are no registered clients. | |
f31e084c | 571 | */ |
d62a17ae | 572 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 573 | { |
6a154c88 | 574 | list_delete(&fec->client_list); |
d62a17ae | 575 | fec->rn->info = NULL; |
576 | route_unlock_node(fec->rn); | |
577 | XFREE(MTYPE_FEC, fec); | |
578 | return 0; | |
f31e084c DS |
579 | } |
580 | ||
7758e3f3 | 581 | /* |
582 | * Hash function for label. | |
583 | */ | |
d8b87afe | 584 | static unsigned int label_hash(const void *p) |
7758e3f3 | 585 | { |
d62a17ae | 586 | const zebra_ile_t *ile = p; |
7758e3f3 | 587 | |
d62a17ae | 588 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 589 | } |
590 | ||
591 | /* | |
592 | * Compare 2 LSP hash entries based on in-label. | |
593 | */ | |
74df8d6d | 594 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 595 | { |
d62a17ae | 596 | const zebra_ile_t *ile1 = p1; |
597 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 598 | |
d62a17ae | 599 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 600 | } |
601 | ||
40c7bdb0 | 602 | /* |
603 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
604 | * the passed flag. | |
605 | * NOTE: Looking only for connected routes right now. | |
606 | */ | |
d62a17ae | 607 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
608 | struct nexthop *nexthop) | |
40c7bdb0 | 609 | { |
d62a17ae | 610 | struct route_table *table; |
611 | struct prefix_ipv4 p; | |
612 | struct route_node *rn; | |
613 | struct route_entry *match; | |
614 | struct nexthop *match_nh; | |
40c7bdb0 | 615 | |
4a7371e9 | 616 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 617 | if (!table) |
618 | return 0; | |
40c7bdb0 | 619 | |
d62a17ae | 620 | /* Lookup nexthop in IPv4 routing table. */ |
621 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
622 | p.family = AF_INET; | |
623 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
624 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 625 | |
d62a17ae | 626 | rn = route_node_match(table, (struct prefix *)&p); |
627 | if (!rn) | |
628 | return 0; | |
40c7bdb0 | 629 | |
d62a17ae | 630 | route_unlock_node(rn); |
88d88a9c | 631 | |
d62a17ae | 632 | /* Locate a valid connected route. */ |
a2addae8 | 633 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 634 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
635 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
636 | continue; | |
637 | ||
6b468511 | 638 | for (match_nh = match->ng->nexthop; match_nh; |
d62a17ae | 639 | match_nh = match_nh->next) { |
640 | if (match->type == ZEBRA_ROUTE_CONNECT | |
641 | || nexthop->ifindex == match_nh->ifindex) { | |
642 | nexthop->ifindex = match_nh->ifindex; | |
643 | return 1; | |
644 | } | |
645 | } | |
88d88a9c | 646 | } |
40c7bdb0 | 647 | |
d62a17ae | 648 | return 0; |
40c7bdb0 | 649 | } |
650 | ||
651 | ||
652 | /* | |
653 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
654 | * the passed flag. | |
655 | * NOTE: Looking only for connected routes right now. | |
656 | */ | |
d62a17ae | 657 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
658 | struct nexthop *nexthop) | |
40c7bdb0 | 659 | { |
d62a17ae | 660 | struct route_table *table; |
661 | struct prefix_ipv6 p; | |
662 | struct route_node *rn; | |
663 | struct route_entry *match; | |
40c7bdb0 | 664 | |
4a7371e9 | 665 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 666 | if (!table) |
667 | return 0; | |
40c7bdb0 | 668 | |
d62a17ae | 669 | /* Lookup nexthop in IPv6 routing table. */ |
670 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
671 | p.family = AF_INET6; | |
672 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
673 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 674 | |
d62a17ae | 675 | rn = route_node_match(table, (struct prefix *)&p); |
676 | if (!rn) | |
677 | return 0; | |
40c7bdb0 | 678 | |
d62a17ae | 679 | route_unlock_node(rn); |
40c7bdb0 | 680 | |
d62a17ae | 681 | /* Locate a valid connected route. */ |
a2addae8 | 682 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 683 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
684 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
685 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
686 | break; | |
687 | } | |
40c7bdb0 | 688 | |
6b468511 | 689 | if (!match || !match->ng->nexthop) |
d62a17ae | 690 | return 0; |
40c7bdb0 | 691 | |
6b468511 | 692 | nexthop->ifindex = match->ng->nexthop->ifindex; |
d62a17ae | 693 | return 1; |
40c7bdb0 | 694 | } |
695 | ||
696 | ||
697 | /* | |
698 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
699 | * or not. | |
700 | * NOTE: Each NHLFE points to only 1 nexthop. | |
701 | */ | |
d62a17ae | 702 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
703 | { | |
704 | struct nexthop *nexthop; | |
705 | struct interface *ifp; | |
86f07f44 | 706 | struct zebra_ns *zns; |
d62a17ae | 707 | |
708 | nexthop = nhlfe->nexthop; | |
709 | if (!nexthop) // unexpected | |
710 | return 0; | |
711 | ||
712 | /* Check on nexthop based on type. */ | |
713 | switch (nexthop->type) { | |
b9abd9ad DS |
714 | case NEXTHOP_TYPE_IFINDEX: |
715 | /* | |
716 | * Lookup if this type is special. The | |
717 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
718 | * forward into a different table for | |
719 | * processing. As such this ifindex | |
720 | * passed to us may be a VRF device | |
721 | * which will not be in the default | |
722 | * VRF. So let's look in all of them | |
723 | */ | |
86f07f44 PG |
724 | zns = zebra_ns_lookup(NS_DEFAULT); |
725 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
726 | if (ifp && if_is_operative(ifp)) |
727 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
728 | else | |
729 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
730 | break; | |
d62a17ae | 731 | case NEXTHOP_TYPE_IPV4: |
732 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
733 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
734 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
735 | else | |
736 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
737 | break; | |
738 | ||
739 | case NEXTHOP_TYPE_IPV6: | |
740 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
741 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
742 | else | |
743 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
744 | break; | |
745 | ||
746 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
747 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
748 | ifp = if_lookup_by_index(nexthop->ifindex, |
749 | nexthop->vrf_id); | |
d62a17ae | 750 | if (ifp && if_is_operative(ifp)) |
751 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
752 | else | |
753 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
754 | } else { | |
755 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
756 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
757 | else | |
758 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
759 | } | |
760 | break; | |
761 | ||
762 | default: | |
763 | break; | |
764 | } | |
765 | ||
766 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 767 | } |
768 | ||
769 | /* | |
770 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
771 | * reachability and select the best. Multipath entries are also | |
772 | * marked. This is invoked when an LSP scheduled for processing (due | |
773 | * to some change) is examined. | |
774 | */ | |
d62a17ae | 775 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
776 | { | |
777 | zebra_nhlfe_t *nhlfe; | |
778 | zebra_nhlfe_t *best; | |
779 | struct nexthop *nexthop; | |
780 | int changed = 0; | |
781 | ||
782 | if (!lsp) | |
783 | return; | |
784 | ||
785 | best = NULL; | |
786 | lsp->num_ecmp = 0; | |
787 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
788 | ||
789 | /* | |
790 | * First compute the best path, after checking nexthop status. We are | |
791 | * only | |
792 | * concerned with non-deleted NHLFEs. | |
793 | */ | |
794 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
795 | /* Clear selection flags. */ | |
796 | UNSET_FLAG(nhlfe->flags, | |
797 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
798 | ||
799 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
800 | && nhlfe_nexthop_active(nhlfe)) { | |
801 | if (!best || (nhlfe->distance < best->distance)) | |
802 | best = nhlfe; | |
803 | } | |
804 | } | |
805 | ||
806 | lsp->best_nhlfe = best; | |
807 | if (!lsp->best_nhlfe) | |
808 | return; | |
809 | ||
810 | /* Mark best NHLFE as selected. */ | |
811 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
812 | ||
813 | /* | |
814 | * If best path exists, see if there is ECMP. While doing this, note if | |
815 | * a | |
816 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
817 | * still selected has a change or an installed entry is to be removed. | |
818 | */ | |
819 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
820 | int nh_chg, nh_sel, nh_inst; | |
821 | ||
822 | nexthop = nhlfe->nexthop; | |
823 | if (!nexthop) // unexpected | |
824 | continue; | |
825 | ||
826 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
827 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
828 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
829 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
830 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
831 | lsp->num_ecmp++; | |
832 | } | |
833 | ||
834 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
835 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
836 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
837 | nh_inst = | |
838 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
839 | ||
840 | if ((nh_sel && !nh_inst) | |
841 | || (nh_sel && nh_inst && nh_chg) | |
842 | || (nh_inst && !nh_sel)) | |
843 | changed = 1; | |
844 | } | |
845 | ||
846 | /* We have finished examining, clear changed flag. */ | |
847 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
848 | } | |
849 | ||
850 | if (changed) | |
851 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 852 | } |
853 | ||
854 | /* | |
855 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
856 | * process exit. | |
857 | */ | |
e3b78da8 | 858 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 859 | { |
d62a17ae | 860 | zebra_lsp_t *lsp; |
40c7bdb0 | 861 | |
e3b78da8 | 862 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 863 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 864 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 865 | } |
866 | ||
867 | /* | |
868 | * Schedule LSP forwarding entry for processing. Called upon changes | |
869 | * that may impact LSPs such as nexthop / connected route changes. | |
870 | */ | |
e3b78da8 | 871 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 872 | { |
d62a17ae | 873 | zebra_lsp_t *lsp; |
40c7bdb0 | 874 | |
e3b78da8 | 875 | lsp = (zebra_lsp_t *)bucket->data; |
0af35d90 | 876 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 877 | } |
878 | ||
879 | /* | |
880 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
881 | * any multipaths and update or delete from the kernel, as needed. | |
882 | */ | |
d62a17ae | 883 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
884 | { | |
885 | zebra_lsp_t *lsp; | |
886 | zebra_nhlfe_t *oldbest, *newbest; | |
887 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
888 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 889 | enum zebra_dplane_result res; |
d62a17ae | 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); | |
d37f4d6c MS |
919 | |
920 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 921 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
922 | /* Set 'installed' flag so we will know |
923 | * that an install is in-flight. | |
924 | */ | |
925 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
926 | ||
927 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 928 | break; |
ea1c14f6 | 929 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
930 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
931 | "LSP Install Failure: %u", | |
932 | lsp->ile.in_label); | |
7c5d0e18 | 933 | break; |
ea1c14f6 | 934 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
935 | zvrf->lsp_installs++; |
936 | break; | |
937 | } | |
d62a17ae | 938 | } |
939 | } else { | |
940 | /* Installed, may need an update and/or delete. */ | |
941 | if (!newbest) { | |
d37f4d6c MS |
942 | res = dplane_lsp_delete(lsp); |
943 | ||
944 | /* We do some of the lsp cleanup immediately for | |
945 | * deletes. | |
946 | */ | |
947 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
948 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 949 | |
d37f4d6c | 950 | switch (res) { |
ea1c14f6 | 951 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 952 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 953 | break; |
ea1c14f6 | 954 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
955 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
956 | "LSP Deletion Failure: %u", | |
957 | lsp->ile.in_label); | |
7c5d0e18 | 958 | break; |
ea1c14f6 | 959 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
960 | zvrf->lsp_removals++; |
961 | break; | |
962 | } | |
d62a17ae | 963 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
964 | zebra_nhlfe_t *nhlfe; |
965 | struct nexthop *nexthop; | |
2b63430c DS |
966 | |
967 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
968 | |
969 | /* We leave the INSTALLED flag set here | |
970 | * so we know an update in in-flight. | |
971 | */ | |
e6d44ec7 | 972 | |
9fa38ec6 DS |
973 | /* |
974 | * Any NHLFE that was installed but is not | |
975 | * selected now needs to have its flags updated. | |
976 | */ | |
996c9314 LB |
977 | for (nhlfe = lsp->nhlfe_list; nhlfe; |
978 | nhlfe = nhlfe->next) { | |
9fa38ec6 DS |
979 | nexthop = nhlfe->nexthop; |
980 | if (!nexthop) | |
981 | continue; | |
982 | ||
983 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
984 | NHLFE_FLAG_INSTALLED) |
985 | && !CHECK_FLAG(nhlfe->flags, | |
986 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
987 | UNSET_FLAG(nhlfe->flags, |
988 | NHLFE_FLAG_INSTALLED); | |
989 | UNSET_FLAG(nexthop->flags, | |
990 | NEXTHOP_FLAG_FIB); | |
991 | } | |
992 | } | |
993 | ||
d37f4d6c | 994 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 995 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 996 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 997 | break; |
ea1c14f6 | 998 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
999 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1000 | "LSP Update Failure: %u", | |
1001 | lsp->ile.in_label); | |
7c5d0e18 | 1002 | break; |
ea1c14f6 | 1003 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1004 | zvrf->lsp_installs++; |
1005 | break; | |
1006 | } | |
d62a17ae | 1007 | } |
1008 | } | |
1009 | ||
1010 | return WQ_SUCCESS; | |
40c7bdb0 | 1011 | } |
1012 | ||
1013 | ||
1014 | /* | |
1015 | * Callback upon processing completion of a LSP forwarding entry. | |
1016 | */ | |
d62a17ae | 1017 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1018 | { |
d62a17ae | 1019 | struct zebra_vrf *zvrf; |
1020 | zebra_lsp_t *lsp; | |
1021 | struct hash *lsp_table; | |
1022 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
40c7bdb0 | 1023 | |
d62a17ae | 1024 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1025 | assert(zvrf); | |
40c7bdb0 | 1026 | |
d62a17ae | 1027 | lsp_table = zvrf->lsp_table; |
1028 | if (!lsp_table) // unexpected | |
1029 | return; | |
40c7bdb0 | 1030 | |
d62a17ae | 1031 | lsp = (zebra_lsp_t *)data; |
1032 | if (!lsp) // unexpected | |
1033 | return; | |
40c7bdb0 | 1034 | |
d62a17ae | 1035 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1036 | * exist, | |
1037 | * delete LSP entry also. | |
1038 | */ | |
1039 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1040 | |
d62a17ae | 1041 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { |
1042 | nhlfe_next = nhlfe->next; | |
1043 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1044 | nhlfe_del(nhlfe); | |
1045 | } | |
40c7bdb0 | 1046 | |
d62a17ae | 1047 | if (!lsp->nhlfe_list) { |
1048 | if (IS_ZEBRA_DEBUG_MPLS) | |
1049 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1050 | lsp->ile.in_label, lsp->flags); | |
40c7bdb0 | 1051 | |
d62a17ae | 1052 | lsp = hash_release(lsp_table, &lsp->ile); |
0a22ddfb | 1053 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 1054 | } |
40c7bdb0 | 1055 | } |
1056 | ||
1057 | /* | |
1058 | * Callback upon finishing the processing of all scheduled | |
1059 | * LSP forwarding entries. | |
1060 | */ | |
d62a17ae | 1061 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1062 | { |
d62a17ae | 1063 | /* Nothing to do for now. */ |
40c7bdb0 | 1064 | } |
1065 | ||
1066 | /* | |
1067 | * Add LSP forwarding entry to queue for subsequent processing. | |
1068 | */ | |
d62a17ae | 1069 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1070 | { |
d62a17ae | 1071 | /* If already scheduled, exit. */ |
1072 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1073 | return 0; | |
40c7bdb0 | 1074 | |
e2353ec2 | 1075 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1076 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1077 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1078 | return -1; |
1079 | } | |
33c32282 | 1080 | |
e2353ec2 | 1081 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1082 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1083 | return 0; | |
40c7bdb0 | 1084 | } |
1085 | ||
1086 | /* | |
1087 | * Callback to allocate LSP forwarding table entry. | |
1088 | */ | |
d62a17ae | 1089 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1090 | { |
d62a17ae | 1091 | const zebra_ile_t *ile = p; |
1092 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1093 | |
d62a17ae | 1094 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1095 | lsp->ile = *ile; | |
40c7bdb0 | 1096 | |
d62a17ae | 1097 | if (IS_ZEBRA_DEBUG_MPLS) |
1098 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1099 | |
d62a17ae | 1100 | return ((void *)lsp); |
40c7bdb0 | 1101 | } |
1102 | ||
1103 | /* | |
1104 | * Create printable string for NHLFE entry. | |
1105 | */ | |
d62a17ae | 1106 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1107 | { |
d62a17ae | 1108 | struct nexthop *nexthop; |
40c7bdb0 | 1109 | |
d62a17ae | 1110 | buf[0] = '\0'; |
1111 | nexthop = nhlfe->nexthop; | |
1112 | switch (nexthop->type) { | |
1113 | case NEXTHOP_TYPE_IPV4: | |
1114 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1115 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1116 | break; | |
1117 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1118 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1119 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1120 | break; | |
b9abd9ad DS |
1121 | case NEXTHOP_TYPE_IFINDEX: |
1122 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1123 | default: |
1124 | break; | |
1125 | } | |
40c7bdb0 | 1126 | |
d62a17ae | 1127 | return buf; |
40c7bdb0 | 1128 | } |
1129 | ||
1130 | /* | |
1131 | * Check if NHLFE matches with search info passed. | |
1132 | */ | |
d62a17ae | 1133 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
1134 | union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1135 | { |
d62a17ae | 1136 | struct nexthop *nhop; |
1137 | int cmp = 1; | |
40c7bdb0 | 1138 | |
d62a17ae | 1139 | nhop = nhlfe->nexthop; |
1140 | if (!nhop) | |
1141 | return 1; | |
40c7bdb0 | 1142 | |
d62a17ae | 1143 | if (nhop->type != gtype) |
1144 | return 1; | |
40c7bdb0 | 1145 | |
d62a17ae | 1146 | switch (nhop->type) { |
1147 | case NEXTHOP_TYPE_IPV4: | |
1148 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1149 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1150 | sizeof(struct in_addr)); | |
1151 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1152 | cmp = !(nhop->ifindex == ifindex); | |
1153 | break; | |
1154 | case NEXTHOP_TYPE_IPV6: | |
1155 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1156 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1157 | sizeof(struct in6_addr)); | |
1158 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1159 | cmp = !(nhop->ifindex == ifindex); | |
1160 | break; | |
b9abd9ad DS |
1161 | case NEXTHOP_TYPE_IFINDEX: |
1162 | cmp = !(nhop->ifindex == ifindex); | |
1163 | break; | |
d62a17ae | 1164 | default: |
1165 | break; | |
1166 | } | |
40c7bdb0 | 1167 | |
d62a17ae | 1168 | return cmp; |
40c7bdb0 | 1169 | } |
1170 | ||
1171 | ||
1172 | /* | |
1173 | * Locate NHLFE that matches with passed info. | |
1174 | */ | |
d62a17ae | 1175 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1176 | enum nexthop_types_t gtype, union g_addr *gate, | |
1177 | ifindex_t ifindex) | |
40c7bdb0 | 1178 | { |
d62a17ae | 1179 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1180 | |
d62a17ae | 1181 | if (!lsp) |
1182 | return NULL; | |
40c7bdb0 | 1183 | |
d62a17ae | 1184 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { |
1185 | if (nhlfe->type != lsp_type) | |
1186 | continue; | |
1187 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1188 | break; | |
1189 | } | |
40c7bdb0 | 1190 | |
d62a17ae | 1191 | return nhlfe; |
40c7bdb0 | 1192 | } |
1193 | ||
1194 | /* | |
1195 | * Add NHLFE. Base entry must have been created and duplicate | |
1196 | * check done. | |
1197 | */ | |
d62a17ae | 1198 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1199 | enum nexthop_types_t gtype, union g_addr *gate, | |
1200 | ifindex_t ifindex, mpls_label_t out_label) | |
1201 | { | |
1202 | zebra_nhlfe_t *nhlfe; | |
1203 | struct nexthop *nexthop; | |
1204 | ||
1205 | if (!lsp) | |
1206 | return NULL; | |
1207 | ||
1208 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1209 | |
1210 | nhlfe->lsp = lsp; | |
1211 | nhlfe->type = lsp_type; | |
1212 | nhlfe->distance = lsp_distance(lsp_type); | |
1213 | ||
1214 | nexthop = nexthop_new(); | |
1215 | if (!nexthop) { | |
1216 | XFREE(MTYPE_NHLFE, nhlfe); | |
1217 | return NULL; | |
1218 | } | |
1219 | nexthop_add_labels(nexthop, lsp_type, 1, &out_label); | |
1220 | ||
4a7371e9 | 1221 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1222 | nexthop->type = gtype; |
1223 | switch (nexthop->type) { | |
1224 | case NEXTHOP_TYPE_IPV4: | |
1225 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1226 | nexthop->gate.ipv4 = gate->ipv4; | |
1227 | if (ifindex) | |
1228 | nexthop->ifindex = ifindex; | |
1229 | break; | |
1230 | case NEXTHOP_TYPE_IPV6: | |
1231 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1232 | nexthop->gate.ipv6 = gate->ipv6; | |
1233 | if (ifindex) | |
1234 | nexthop->ifindex = ifindex; | |
1235 | break; | |
b9abd9ad DS |
1236 | case NEXTHOP_TYPE_IFINDEX: |
1237 | nexthop->ifindex = ifindex; | |
1238 | break; | |
d62a17ae | 1239 | default: |
1240 | nexthop_free(nexthop); | |
1241 | XFREE(MTYPE_NHLFE, nhlfe); | |
1242 | return NULL; | |
1243 | break; | |
1244 | } | |
1245 | ||
1246 | nhlfe->nexthop = nexthop; | |
1247 | if (lsp->nhlfe_list) | |
1248 | lsp->nhlfe_list->prev = nhlfe; | |
1249 | nhlfe->next = lsp->nhlfe_list; | |
1250 | lsp->nhlfe_list = nhlfe; | |
1251 | ||
1252 | return nhlfe; | |
40c7bdb0 | 1253 | } |
1254 | ||
1255 | /* | |
1256 | * Delete NHLFE. Entry must be present on list. | |
1257 | */ | |
d62a17ae | 1258 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1259 | { |
d62a17ae | 1260 | zebra_lsp_t *lsp; |
40c7bdb0 | 1261 | |
d62a17ae | 1262 | if (!nhlfe) |
1263 | return -1; | |
40c7bdb0 | 1264 | |
d62a17ae | 1265 | lsp = nhlfe->lsp; |
1266 | if (!lsp) | |
1267 | return -1; | |
40c7bdb0 | 1268 | |
d62a17ae | 1269 | /* Free nexthop. */ |
1270 | if (nhlfe->nexthop) | |
1271 | nexthop_free(nhlfe->nexthop); | |
40c7bdb0 | 1272 | |
d62a17ae | 1273 | /* Unlink from LSP */ |
1274 | if (nhlfe->next) | |
1275 | nhlfe->next->prev = nhlfe->prev; | |
1276 | if (nhlfe->prev) | |
1277 | nhlfe->prev->next = nhlfe->next; | |
1278 | else | |
1279 | lsp->nhlfe_list = nhlfe->next; | |
40c7bdb0 | 1280 | |
d62a17ae | 1281 | if (nhlfe == lsp->best_nhlfe) |
1282 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1283 | |
d62a17ae | 1284 | XFREE(MTYPE_NHLFE, nhlfe); |
40c7bdb0 | 1285 | |
d62a17ae | 1286 | return 0; |
40c7bdb0 | 1287 | } |
1288 | ||
a64448ba DS |
1289 | /* |
1290 | * Update label for NHLFE entry. | |
1291 | */ | |
d62a17ae | 1292 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1293 | struct mpls_label_stack *nh_label) |
d62a17ae | 1294 | { |
1295 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1296 | } | |
1297 | ||
1298 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1299 | enum lsp_types_t type) | |
1300 | { | |
1301 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
1302 | int schedule_lsp = 0; | |
1303 | char buf[BUFSIZ]; | |
1304 | ||
1305 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
1306 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
1307 | nhlfe_next = nhlfe->next; | |
1308 | ||
1309 | /* Skip non-static NHLFEs */ | |
1310 | if (nhlfe->type != type) | |
1311 | continue; | |
1312 | ||
1313 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1314 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1315 | zlog_debug( | |
1316 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1317 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1318 | } | |
1319 | ||
1320 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1321 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1322 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1323 | schedule_lsp = 1; | |
1324 | } else { | |
1325 | nhlfe_del(nhlfe); | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* Queue LSP for processing, if needed, else delete. */ | |
1330 | if (schedule_lsp) { | |
1331 | if (lsp_processq_add(lsp)) | |
1332 | return -1; | |
1333 | } else if (!lsp->nhlfe_list | |
1334 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
1335 | if (IS_ZEBRA_DEBUG_MPLS) | |
1336 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1337 | lsp->ile.in_label, lsp->flags); | |
1338 | ||
1339 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 1340 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 1341 | } |
1342 | ||
1343 | return 0; | |
40c7bdb0 | 1344 | } |
1345 | ||
ce549947 RW |
1346 | /* |
1347 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1348 | * If no other NHLFEs exist, the entry would be deleted. | |
1349 | */ | |
d62a17ae | 1350 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1351 | mpls_label_t in_label) | |
ce549947 | 1352 | { |
d62a17ae | 1353 | struct hash *lsp_table; |
1354 | zebra_ile_t tmp_ile; | |
1355 | zebra_lsp_t *lsp; | |
ce549947 | 1356 | |
d62a17ae | 1357 | /* Lookup table. */ |
1358 | lsp_table = zvrf->lsp_table; | |
1359 | if (!lsp_table) | |
1360 | return -1; | |
ce549947 | 1361 | |
d62a17ae | 1362 | /* If entry is not present, exit. */ |
1363 | tmp_ile.in_label = in_label; | |
1364 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1365 | if (!lsp || !lsp->nhlfe_list) | |
1366 | return 0; | |
ce549947 | 1367 | |
d62a17ae | 1368 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1369 | } |
1370 | ||
d62a17ae | 1371 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1372 | { |
d62a17ae | 1373 | char buf[BUFSIZ]; |
1374 | json_object *json_nhlfe = NULL; | |
1375 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1376 | |
d62a17ae | 1377 | json_nhlfe = json_object_new_object(); |
1378 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1379 | json_object_int_add(json_nhlfe, "outLabel", | |
1380 | nexthop->nh_label->label[0]); | |
1381 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1382 | |
d62a17ae | 1383 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1384 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1385 | |
d62a17ae | 1386 | switch (nexthop->type) { |
1387 | case NEXTHOP_TYPE_IPV4: | |
1388 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1389 | json_object_string_add(json_nhlfe, "nexthop", | |
1390 | inet_ntoa(nexthop->gate.ipv4)); | |
1391 | break; | |
1392 | case NEXTHOP_TYPE_IPV6: | |
1393 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1394 | json_object_string_add( | |
1395 | json_nhlfe, "nexthop", | |
1396 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1397 | ||
1398 | if (nexthop->ifindex) | |
4a7371e9 DS |
1399 | json_object_string_add(json_nhlfe, "interface", |
1400 | ifindex2ifname(nexthop->ifindex, | |
1401 | nexthop->vrf_id)); | |
d62a17ae | 1402 | break; |
1403 | default: | |
1404 | break; | |
1405 | } | |
1406 | return json_nhlfe; | |
b78b820d | 1407 | } |
1408 | ||
3ab18ff2 | 1409 | /* |
1410 | * Print the NHLFE for a LSP forwarding entry. | |
1411 | */ | |
d62a17ae | 1412 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1413 | { | |
1414 | struct nexthop *nexthop; | |
1415 | char buf[BUFSIZ]; | |
1416 | ||
1417 | nexthop = nhlfe->nexthop; | |
1418 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1419 | return; | |
1420 | ||
1421 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1422 | nhlfe_type2str(nhlfe->type), | |
1423 | label2str(nexthop->nh_label->label[0], buf, BUFSIZ), | |
1424 | nhlfe->distance); | |
1425 | switch (nexthop->type) { | |
1426 | case NEXTHOP_TYPE_IPV4: | |
1427 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1428 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1429 | if (nexthop->ifindex) | |
1430 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1431 | ifindex2ifname(nexthop->ifindex, |
1432 | nexthop->vrf_id)); | |
d62a17ae | 1433 | break; |
1434 | case NEXTHOP_TYPE_IPV6: | |
1435 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1436 | vty_out(vty, " via %s", | |
1437 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1438 | if (nexthop->ifindex) | |
1439 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1440 | ifindex2ifname(nexthop->ifindex, |
1441 | nexthop->vrf_id)); | |
d62a17ae | 1442 | break; |
1443 | default: | |
1444 | break; | |
1445 | } | |
996c9314 LB |
1446 | vty_out(vty, "%s", |
1447 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1448 | : ""); | |
d62a17ae | 1449 | vty_out(vty, "\n"); |
3ab18ff2 | 1450 | } |
1451 | ||
1452 | /* | |
1453 | * Print an LSP forwarding entry. | |
1454 | */ | |
d62a17ae | 1455 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt) |
3ab18ff2 | 1456 | { |
d62a17ae | 1457 | zebra_nhlfe_t *nhlfe; |
1458 | struct vty *vty; | |
3ab18ff2 | 1459 | |
d62a17ae | 1460 | vty = (struct vty *)ctxt; |
3ab18ff2 | 1461 | |
d62a17ae | 1462 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1463 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1464 | : ""); | |
3ab18ff2 | 1465 | |
d62a17ae | 1466 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1467 | nhlfe_print(nhlfe, vty); | |
3ab18ff2 | 1468 | } |
1469 | ||
1470 | /* | |
b78b820d | 1471 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1472 | */ |
d62a17ae | 1473 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1474 | { |
d62a17ae | 1475 | zebra_nhlfe_t *nhlfe = NULL; |
1476 | json_object *json = json_object_new_object(); | |
1477 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1478 | |
d62a17ae | 1479 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1480 | |
d62a17ae | 1481 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1482 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1483 | |
d62a17ae | 1484 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1485 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
b78b820d | 1486 | |
d62a17ae | 1487 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1488 | return json; | |
b78b820d | 1489 | } |
1490 | ||
1491 | ||
1492 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1493 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1494 | { |
d62a17ae | 1495 | unsigned int i; |
e3b78da8 | 1496 | struct hash_bucket *hb; |
d62a17ae | 1497 | struct list *sorted_list = list_new(); |
b78b820d | 1498 | |
d62a17ae | 1499 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1500 | |
d62a17ae | 1501 | for (i = 0; i < hash->size; i++) |
1502 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1503 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1504 | |
d62a17ae | 1505 | return sorted_list; |
3ab18ff2 | 1506 | } |
1507 | ||
7758e3f3 | 1508 | /* |
b78b820d | 1509 | * Compare two LSPs based on their label values. |
7758e3f3 | 1510 | */ |
d62a17ae | 1511 | static int lsp_cmp(zebra_lsp_t *lsp1, zebra_lsp_t *lsp2) |
7758e3f3 | 1512 | { |
d62a17ae | 1513 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1514 | return -1; | |
7758e3f3 | 1515 | |
d62a17ae | 1516 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1517 | return 1; | |
7758e3f3 | 1518 | |
d62a17ae | 1519 | return 0; |
7758e3f3 | 1520 | } |
1521 | ||
1522 | /* | |
1523 | * Callback to allocate static LSP. | |
1524 | */ | |
d62a17ae | 1525 | static void *slsp_alloc(void *p) |
7758e3f3 | 1526 | { |
d62a17ae | 1527 | const zebra_ile_t *ile = p; |
1528 | zebra_slsp_t *slsp; | |
7758e3f3 | 1529 | |
d62a17ae | 1530 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1531 | slsp->ile = *ile; | |
1532 | return ((void *)slsp); | |
7758e3f3 | 1533 | } |
1534 | ||
b78b820d | 1535 | /* |
1536 | * Compare two static LSPs based on their label values. | |
1537 | */ | |
d62a17ae | 1538 | static int slsp_cmp(zebra_slsp_t *slsp1, zebra_slsp_t *slsp2) |
b78b820d | 1539 | { |
d62a17ae | 1540 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1541 | return -1; | |
b78b820d | 1542 | |
d62a17ae | 1543 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1544 | return 1; | |
b78b820d | 1545 | |
d62a17ae | 1546 | return 0; |
b78b820d | 1547 | } |
1548 | ||
7758e3f3 | 1549 | /* |
1550 | * Check if static NHLFE matches with search info passed. | |
1551 | */ | |
d62a17ae | 1552 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
1553 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1554 | { |
d62a17ae | 1555 | int cmp = 1; |
7758e3f3 | 1556 | |
d62a17ae | 1557 | if (snhlfe->gtype != gtype) |
1558 | return 1; | |
7758e3f3 | 1559 | |
d62a17ae | 1560 | switch (snhlfe->gtype) { |
1561 | case NEXTHOP_TYPE_IPV4: | |
1562 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1563 | sizeof(struct in_addr)); | |
1564 | break; | |
1565 | case NEXTHOP_TYPE_IPV6: | |
1566 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1567 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1568 | sizeof(struct in6_addr)); | |
1569 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1570 | cmp = !(snhlfe->ifindex == ifindex); | |
1571 | break; | |
1572 | default: | |
1573 | break; | |
1574 | } | |
7758e3f3 | 1575 | |
d62a17ae | 1576 | return cmp; |
7758e3f3 | 1577 | } |
1578 | ||
1579 | /* | |
1580 | * Locate static NHLFE that matches with passed info. | |
1581 | */ | |
d62a17ae | 1582 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1583 | enum nexthop_types_t gtype, | |
1584 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1585 | { |
d62a17ae | 1586 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1587 | |
d62a17ae | 1588 | if (!slsp) |
1589 | return NULL; | |
7758e3f3 | 1590 | |
d62a17ae | 1591 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe->next) { |
1592 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) | |
1593 | break; | |
1594 | } | |
7758e3f3 | 1595 | |
d62a17ae | 1596 | return snhlfe; |
7758e3f3 | 1597 | } |
1598 | ||
1599 | ||
1600 | /* | |
1601 | * Add static NHLFE. Base LSP config entry must have been created | |
1602 | * and duplicate check done. | |
1603 | */ | |
d62a17ae | 1604 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1605 | enum nexthop_types_t gtype, | |
1606 | union g_addr *gate, ifindex_t ifindex, | |
1607 | mpls_label_t out_label) | |
1608 | { | |
1609 | zebra_snhlfe_t *snhlfe; | |
1610 | ||
1611 | if (!slsp) | |
1612 | return NULL; | |
1613 | ||
1614 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1615 | snhlfe->slsp = slsp; | |
1616 | snhlfe->out_label = out_label; | |
1617 | snhlfe->gtype = gtype; | |
1618 | switch (gtype) { | |
1619 | case NEXTHOP_TYPE_IPV4: | |
1620 | snhlfe->gate.ipv4 = gate->ipv4; | |
1621 | break; | |
1622 | case NEXTHOP_TYPE_IPV6: | |
1623 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1624 | snhlfe->gate.ipv6 = gate->ipv6; | |
1625 | if (ifindex) | |
1626 | snhlfe->ifindex = ifindex; | |
1627 | break; | |
1628 | default: | |
1629 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1630 | return NULL; | |
1631 | } | |
1632 | ||
1633 | if (slsp->snhlfe_list) | |
1634 | slsp->snhlfe_list->prev = snhlfe; | |
1635 | snhlfe->next = slsp->snhlfe_list; | |
1636 | slsp->snhlfe_list = snhlfe; | |
1637 | ||
1638 | return snhlfe; | |
7758e3f3 | 1639 | } |
1640 | ||
1641 | /* | |
1642 | * Delete static NHLFE. Entry must be present on list. | |
1643 | */ | |
d62a17ae | 1644 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1645 | { |
d62a17ae | 1646 | zebra_slsp_t *slsp; |
7758e3f3 | 1647 | |
d62a17ae | 1648 | if (!snhlfe) |
1649 | return -1; | |
7758e3f3 | 1650 | |
d62a17ae | 1651 | slsp = snhlfe->slsp; |
1652 | if (!slsp) | |
1653 | return -1; | |
7758e3f3 | 1654 | |
d62a17ae | 1655 | if (snhlfe->next) |
1656 | snhlfe->next->prev = snhlfe->prev; | |
1657 | if (snhlfe->prev) | |
1658 | snhlfe->prev->next = snhlfe->next; | |
1659 | else | |
1660 | slsp->snhlfe_list = snhlfe->next; | |
7758e3f3 | 1661 | |
d62a17ae | 1662 | snhlfe->prev = snhlfe->next = NULL; |
0a22ddfb | 1663 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); |
d62a17ae | 1664 | XFREE(MTYPE_SNHLFE, snhlfe); |
7758e3f3 | 1665 | |
d62a17ae | 1666 | return 0; |
7758e3f3 | 1667 | } |
1668 | ||
1669 | /* | |
1670 | * Delete all static NHLFE entries for this LSP (in label). | |
1671 | */ | |
d62a17ae | 1672 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1673 | { |
d62a17ae | 1674 | zebra_snhlfe_t *snhlfe, *snhlfe_next; |
7758e3f3 | 1675 | |
d62a17ae | 1676 | if (!slsp) |
1677 | return -1; | |
7758e3f3 | 1678 | |
d62a17ae | 1679 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe_next) { |
1680 | snhlfe_next = snhlfe->next; | |
1681 | snhlfe_del(snhlfe); | |
1682 | } | |
7758e3f3 | 1683 | |
d62a17ae | 1684 | return 0; |
7758e3f3 | 1685 | } |
1686 | ||
1687 | /* | |
1688 | * Create printable string for NHLFE configuration. | |
1689 | */ | |
d62a17ae | 1690 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1691 | { |
d62a17ae | 1692 | buf[0] = '\0'; |
1693 | switch (snhlfe->gtype) { | |
1694 | case NEXTHOP_TYPE_IPV4: | |
1695 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1696 | break; | |
1697 | case NEXTHOP_TYPE_IPV6: | |
1698 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1699 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1700 | if (snhlfe->ifindex) | |
eab4a5c2 QY |
1701 | strlcat(buf, |
1702 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT), | |
1703 | size); | |
d62a17ae | 1704 | break; |
1705 | default: | |
1706 | break; | |
1707 | } | |
7758e3f3 | 1708 | |
d62a17ae | 1709 | return buf; |
7758e3f3 | 1710 | } |
1711 | ||
40c7bdb0 | 1712 | /* |
1713 | * Initialize work queue for processing changed LSPs. | |
1714 | */ | |
2561d12e | 1715 | static int mpls_processq_init(void) |
40c7bdb0 | 1716 | { |
e2353ec2 DS |
1717 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1718 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1719 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1720 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1721 | return -1; |
1722 | } | |
40c7bdb0 | 1723 | |
e2353ec2 DS |
1724 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1725 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1726 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1727 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1728 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1729 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1730 | |
d62a17ae | 1731 | return 0; |
40c7bdb0 | 1732 | } |
1733 | ||
7758e3f3 | 1734 | |
7758e3f3 | 1735 | /* Public functions */ |
1736 | ||
d37f4d6c MS |
1737 | /* |
1738 | * Process LSP update results from zebra dataplane. | |
1739 | */ | |
1740 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1741 | { | |
1742 | struct zebra_vrf *zvrf; | |
1743 | zebra_ile_t tmp_ile; | |
1744 | struct hash *lsp_table; | |
1745 | zebra_lsp_t *lsp; | |
1746 | zebra_nhlfe_t *nhlfe; | |
1747 | struct nexthop *nexthop; | |
1748 | enum dplane_op_e op; | |
8841f96e | 1749 | enum zebra_dplane_result status; |
d37f4d6c MS |
1750 | |
1751 | op = dplane_ctx_get_op(ctx); | |
1752 | status = dplane_ctx_get_status(ctx); | |
1753 | ||
1754 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1755 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1756 | ctx, dplane_op2str(op), | |
1757 | dplane_ctx_get_in_label(ctx), | |
1758 | dplane_res2str(status)); | |
1759 | ||
1760 | switch (op) { | |
1761 | case DPLANE_OP_LSP_INSTALL: | |
1762 | case DPLANE_OP_LSP_UPDATE: | |
1763 | /* Look for zebra LSP object */ | |
1764 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1765 | if (zvrf == NULL) | |
1766 | break; | |
1767 | ||
1768 | lsp_table = zvrf->lsp_table; | |
1769 | ||
1770 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1771 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1772 | if (lsp == NULL) { | |
1773 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1774 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1775 | ctx, dplane_ctx_get_in_label(ctx)); | |
1776 | break; | |
1777 | } | |
1778 | ||
1779 | /* TODO -- Confirm that this result is still 'current' */ | |
1780 | ||
8841f96e | 1781 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1782 | /* Update zebra object */ |
1783 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1784 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
1785 | nhlfe = nhlfe->next) { | |
1786 | nexthop = nhlfe->nexthop; | |
1787 | if (!nexthop) | |
1788 | continue; | |
1789 | ||
1790 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1791 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1792 | } | |
1793 | } else { | |
1794 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1795 | clear_nhlfe_installed(lsp); | |
1796 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1797 | "LSP Install Failure: in-label %u", | |
1798 | lsp->ile.in_label); | |
1799 | } | |
1800 | ||
1801 | break; | |
1802 | ||
1803 | case DPLANE_OP_LSP_DELETE: | |
3fd385c6 DS |
1804 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) |
1805 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, | |
1806 | "LSP Deletion Failure: in-label %u", | |
1807 | dplane_ctx_get_in_label(ctx)); | |
d37f4d6c MS |
1808 | break; |
1809 | ||
1810 | default: | |
1811 | break; | |
1812 | ||
1813 | } /* Switch */ | |
1814 | ||
1815 | dplane_ctx_fini(&ctx); | |
1816 | } | |
1817 | ||
104e3ad9 MS |
1818 | /* |
1819 | * Process async dplane notifications. | |
1820 | */ | |
1821 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
1822 | { | |
1823 | struct zebra_vrf *zvrf; | |
1824 | zebra_ile_t tmp_ile; | |
1825 | struct hash *lsp_table; | |
1826 | zebra_lsp_t *lsp; | |
1827 | zebra_nhlfe_t *nhlfe; | |
1828 | const zebra_nhlfe_t *ctx_nhlfe; | |
1829 | struct nexthop *nexthop; | |
1830 | const struct nexthop *ctx_nexthop; | |
1831 | int start_count = 0, end_count = 0; /* Installed counts */ | |
188a00e0 | 1832 | bool changed_p = false; |
104e3ad9 MS |
1833 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1834 | ||
1835 | if (is_debug) | |
1836 | zlog_debug("LSP dplane notif, in-label %u", | |
1837 | dplane_ctx_get_in_label(ctx)); | |
1838 | ||
1839 | /* Look for zebra LSP object */ | |
1840 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1841 | if (zvrf == NULL) | |
1842 | goto done; | |
1843 | ||
1844 | lsp_table = zvrf->lsp_table; | |
1845 | ||
1846 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1847 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1848 | if (lsp == NULL) { | |
1849 | if (is_debug) | |
1850 | zlog_debug("dplane LSP notif: in-label %u not found", | |
1851 | dplane_ctx_get_in_label(ctx)); | |
1852 | goto done; | |
1853 | } | |
1854 | ||
1855 | /* | |
1856 | * The dataplane/forwarding plane is notifying zebra about the state | |
188a00e0 MS |
1857 | * of the nexthops associated with this LSP. First, we take a |
1858 | * pre-scan pass to determine whether the LSP has transitioned | |
1859 | * from installed -> uninstalled. In that case, we need to have | |
1860 | * the existing state of the LSP objects available before making | |
1861 | * any changes. | |
104e3ad9 MS |
1862 | */ |
1863 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1864 | char buf[NEXTHOP_STRLEN]; | |
1865 | ||
1866 | nexthop = nhlfe->nexthop; | |
1867 | if (!nexthop) | |
1868 | continue; | |
1869 | ||
1870 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1871 | start_count++; | |
1872 | ||
1873 | ctx_nexthop = NULL; | |
1874 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1875 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1876 | ||
1877 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1878 | if (!ctx_nexthop) | |
1879 | continue; | |
1880 | ||
1881 | if ((ctx_nexthop->type == nexthop->type) && | |
1882 | nexthop_same(ctx_nexthop, nexthop)) { | |
1883 | /* Matched */ | |
1884 | break; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | if (is_debug) | |
1889 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1890 | ||
1891 | if (ctx_nhlfe && ctx_nexthop) { | |
1892 | if (is_debug) { | |
1893 | const char *tstr = ""; | |
1894 | ||
1895 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1896 | NHLFE_FLAG_INSTALLED)) | |
1897 | tstr = "not "; | |
1898 | ||
1899 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1900 | buf, tstr); | |
1901 | } | |
1902 | ||
188a00e0 | 1903 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1904 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1905 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1906 | |
1907 | if (!CHECK_FLAG(nhlfe->flags, | |
1908 | NHLFE_FLAG_INSTALLED)) | |
1909 | changed_p = true; | |
104e3ad9 MS |
1910 | |
1911 | /* Update counter */ | |
1912 | end_count++; | |
188a00e0 MS |
1913 | } else { |
1914 | ||
1915 | if (CHECK_FLAG(nhlfe->flags, | |
1916 | NHLFE_FLAG_INSTALLED)) | |
1917 | changed_p = true; | |
1918 | } | |
1919 | ||
1920 | } else { | |
1921 | /* Not mentioned in lfib set -> uninstalled */ | |
1922 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1923 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1924 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1925 | changed_p = true; | |
1926 | } | |
1927 | ||
1928 | if (is_debug) | |
1929 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1930 | buf); | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | if (is_debug) | |
1935 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
1936 | start_count, end_count, | |
1937 | changed_p ? ", changed" : ""); | |
1938 | ||
1939 | /* | |
1940 | * Has the LSP become uninstalled? | |
1941 | */ | |
1942 | if (start_count > 0 && end_count == 0) { | |
1943 | /* Inform other lfibs */ | |
1944 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
1945 | } | |
1946 | ||
1947 | /* | |
1948 | * Now we take a second pass and bring the zebra | |
1949 | * nexthop state into sync with the forwarding-plane state. | |
1950 | */ | |
1951 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1952 | char buf[NEXTHOP_STRLEN]; | |
1953 | ||
1954 | nexthop = nhlfe->nexthop; | |
1955 | if (!nexthop) | |
1956 | continue; | |
1957 | ||
1958 | ctx_nexthop = NULL; | |
1959 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1960 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1961 | ||
1962 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1963 | if (!ctx_nexthop) | |
1964 | continue; | |
1965 | ||
1966 | if ((ctx_nexthop->type == nexthop->type) && | |
1967 | nexthop_same(ctx_nexthop, nexthop)) { | |
1968 | /* Matched */ | |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | if (is_debug) | |
1974 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1975 | ||
1976 | if (ctx_nhlfe && ctx_nexthop) { | |
1977 | ||
1978 | /* Bring zebra nhlfe install state into sync */ | |
1979 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1980 | NHLFE_FLAG_INSTALLED)) { | |
1981 | ||
1982 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1983 | ||
1984 | } else { | |
1985 | ||
104e3ad9 | 1986 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
188a00e0 | 1987 | } |
104e3ad9 MS |
1988 | |
1989 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
1990 | NEXTHOP_FLAG_FIB)) { |
1991 | SET_FLAG(nhlfe->nexthop->flags, | |
1992 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1993 | SET_FLAG(nhlfe->nexthop->flags, |
1994 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1995 | } else { |
1996 | UNSET_FLAG(nhlfe->nexthop->flags, | |
1997 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1998 | UNSET_FLAG(nhlfe->nexthop->flags, |
1999 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2000 | } |
2001 | ||
104e3ad9 MS |
2002 | } else { |
2003 | /* Not mentioned in lfib set -> uninstalled */ | |
188a00e0 | 2004 | |
104e3ad9 MS |
2005 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
2006 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
188a00e0 | 2007 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2008 | } |
2009 | } | |
2010 | ||
188a00e0 | 2011 | if (end_count > 0) { |
104e3ad9 | 2012 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2013 | |
2014 | if (changed_p) | |
2015 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2016 | ||
2017 | } else { | |
104e3ad9 MS |
2018 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2019 | clear_nhlfe_installed(lsp); | |
2020 | } | |
2021 | ||
2022 | done: | |
2023 | dplane_ctx_fini(&ctx); | |
2024 | } | |
2025 | ||
a64448ba DS |
2026 | /* |
2027 | * Install dynamic LSP entry. | |
2028 | */ | |
d62a17ae | 2029 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2030 | struct route_entry *re) | |
a64448ba | 2031 | { |
d62a17ae | 2032 | struct route_table *table; |
2033 | zebra_fec_t *fec; | |
a64448ba | 2034 | |
d62a17ae | 2035 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2036 | if (!table) | |
2037 | return -1; | |
a64448ba | 2038 | |
d62a17ae | 2039 | /* See if there is a configured label binding for this FEC. */ |
2040 | fec = fec_find(table, &rn->p); | |
2041 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2042 | return 0; | |
a64448ba | 2043 | |
d62a17ae | 2044 | /* We cannot install a label forwarding entry if local label is the |
2045 | * implicit-null label. | |
2046 | */ | |
70e98a7f | 2047 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2048 | return 0; |
a64448ba | 2049 | |
d62a17ae | 2050 | if (lsp_install(zvrf, fec->label, rn, re)) |
2051 | return -1; | |
a64448ba | 2052 | |
d62a17ae | 2053 | return 0; |
a64448ba DS |
2054 | } |
2055 | ||
2056 | /* | |
2057 | * Uninstall dynamic LSP entry, if any. | |
2058 | */ | |
d62a17ae | 2059 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2060 | struct route_entry *re) | |
a64448ba | 2061 | { |
d62a17ae | 2062 | struct route_table *table; |
2063 | zebra_fec_t *fec; | |
a64448ba | 2064 | |
d62a17ae | 2065 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2066 | if (!table) | |
2067 | return -1; | |
a64448ba | 2068 | |
d62a17ae | 2069 | /* See if there is a configured label binding for this FEC. */ |
2070 | fec = fec_find(table, &rn->p); | |
2071 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2072 | return 0; | |
a64448ba | 2073 | |
d62a17ae | 2074 | /* Uninstall always removes all dynamic NHLFEs. */ |
2075 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2076 | } |
2077 | ||
d4cb23d7 MS |
2078 | /* |
2079 | * Add an NHLFE to an LSP, return the newly-added object | |
2080 | */ | |
2081 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2082 | enum lsp_types_t lsp_type, | |
2083 | enum nexthop_types_t gtype, | |
2084 | union g_addr *gate, | |
2085 | ifindex_t ifindex, | |
2086 | mpls_label_t out_label) | |
2087 | { | |
2088 | /* Just a public pass-through to the internal implementation */ | |
2089 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, out_label); | |
2090 | } | |
2091 | ||
2092 | /* | |
2093 | * Free an allocated NHLFE | |
2094 | */ | |
2095 | void zebra_mpls_nhlfe_del(zebra_nhlfe_t *nhlfe) | |
2096 | { | |
2097 | /* Just a pass-through to the internal implementation */ | |
2098 | nhlfe_del(nhlfe); | |
2099 | } | |
2100 | ||
5aba114a DS |
2101 | /* |
2102 | * Registration from a client for the label binding for a FEC. If a binding | |
2103 | * already exists, it is informed to the client. | |
28d58fd7 | 2104 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2105 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2106 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2107 | * is acceptable. If no label index then just register the specified label. |
2108 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2109 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2110 | */ |
d62a17ae | 2111 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2112 | uint32_t label, uint32_t label_index, |
2113 | struct zserv *client) | |
d62a17ae | 2114 | { |
2115 | struct route_table *table; | |
2116 | zebra_fec_t *fec; | |
2117 | char buf[BUFSIZ]; | |
57592a53 AD |
2118 | bool new_client; |
2119 | bool label_change = false; | |
d7c0a89a | 2120 | uint32_t old_label; |
57592a53 AD |
2121 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2122 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2123 | |
2124 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2125 | if (!table) | |
2126 | return -1; | |
2127 | ||
2128 | if (IS_ZEBRA_DEBUG_MPLS) | |
2129 | prefix2str(p, buf, BUFSIZ); | |
2130 | ||
57592a53 AD |
2131 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2132 | flog_err( | |
2133 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2134 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2135 | buf, label, label_index, | |
2136 | zebra_route_string(client->proto)); | |
2137 | return -1; | |
2138 | } | |
2139 | ||
d62a17ae | 2140 | /* Locate FEC */ |
2141 | fec = fec_find(table, p); | |
2142 | if (!fec) { | |
57592a53 | 2143 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2144 | if (!fec) { |
af4c2728 | 2145 | flog_err( |
e914ccbe | 2146 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2147 | "Failed to add FEC %s upon register, client %s", |
2148 | buf, zebra_route_string(client->proto)); | |
2149 | return -1; | |
2150 | } | |
2151 | ||
2152 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2153 | new_client = true; |
d62a17ae | 2154 | } else { |
57592a53 AD |
2155 | /* Check if the FEC has been statically defined in the config */ |
2156 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2157 | /* Client may register same FEC with different label index. */ |
2158 | new_client = | |
2159 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2160 | if (!new_client && fec->label_index == label_index |
2161 | && fec->label == label) | |
d62a17ae | 2162 | /* Duplicate register */ |
2163 | return 0; | |
2164 | ||
57592a53 | 2165 | /* Save current label, update the FEC */ |
d62a17ae | 2166 | old_label = fec->label; |
2167 | fec->label_index = label_index; | |
2168 | } | |
2169 | ||
2170 | if (new_client) | |
2171 | listnode_add(fec->client_list, client); | |
2172 | ||
2173 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2174 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2175 | have_label_index ? " index" : "", | |
2176 | have_label_index ? label_index : label, | |
2177 | new_client ? "registered" : "updated", | |
2178 | zebra_route_string(client->proto), | |
2179 | is_configured_fec | |
2180 | ? ", but using statically configured label" | |
2181 | : ""); | |
2182 | ||
2183 | /* If not a statically configured FEC, derive the local label | |
2184 | * from label index or use the provided label | |
d62a17ae | 2185 | */ |
57592a53 AD |
2186 | if (!is_configured_fec) { |
2187 | if (have_label_index) | |
2188 | fec_derive_label_from_index(zvrf, fec); | |
2189 | else | |
2190 | fec->label = label; | |
d62a17ae | 2191 | |
2192 | /* If no label change, exit. */ | |
2193 | if (fec->label == old_label) | |
2194 | return 0; | |
2195 | ||
57592a53 | 2196 | label_change = true; |
d62a17ae | 2197 | } |
2198 | ||
2199 | /* If new client or label change, update client and install or uninstall | |
2200 | * label forwarding entry as needed. | |
2201 | */ | |
2202 | /* Inform client of label, if needed. */ | |
2203 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2204 | if (IS_ZEBRA_DEBUG_MPLS) | |
2205 | zlog_debug("Update client label %u", fec->label); | |
2206 | fec_send(fec, client); | |
2207 | } | |
2208 | ||
2209 | if (new_client || label_change) | |
2210 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2211 | ||
2212 | return 0; | |
5aba114a DS |
2213 | } |
2214 | ||
2215 | /* | |
2216 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2217 | * itself is deleted if no other registered clients exist and there is no | |
2218 | * label bound to the FEC. | |
2219 | */ | |
d62a17ae | 2220 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2221 | struct zserv *client) | |
5aba114a | 2222 | { |
d62a17ae | 2223 | struct route_table *table; |
2224 | zebra_fec_t *fec; | |
2225 | char buf[BUFSIZ]; | |
5aba114a | 2226 | |
d62a17ae | 2227 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2228 | if (!table) | |
2229 | return -1; | |
5aba114a | 2230 | |
d62a17ae | 2231 | if (IS_ZEBRA_DEBUG_MPLS) |
2232 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2233 | |
d62a17ae | 2234 | fec = fec_find(table, p); |
2235 | if (!fec) { | |
2236 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2237 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
2238 | "Failed to find FEC %s upon unregister, client %s", |
2239 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 2240 | return -1; |
2241 | } | |
5aba114a | 2242 | |
d62a17ae | 2243 | listnode_delete(fec->client_list, client); |
2244 | ||
2245 | if (IS_ZEBRA_DEBUG_MPLS) | |
2246 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2247 | zebra_route_string(client->proto)); | |
2248 | ||
2249 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2250 | * deleting, see if any LSP needs to be uninstalled. | |
2251 | */ | |
2252 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2253 | && list_isempty(fec->client_list)) { | |
2254 | mpls_label_t old_label = fec->label; | |
2255 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2256 | fec_change_update_lsp(zvrf, fec, old_label); | |
2257 | fec_del(fec); | |
2258 | } | |
5aba114a | 2259 | |
d62a17ae | 2260 | return 0; |
5aba114a DS |
2261 | } |
2262 | ||
2263 | /* | |
2264 | * Cleanup any FECs registered by this client. | |
2265 | */ | |
453844ab | 2266 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2267 | { |
453844ab | 2268 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2269 | struct route_node *rn; |
2270 | zebra_fec_t *fec; | |
2271 | struct listnode *node; | |
2272 | struct zserv *fec_client; | |
2273 | int af; | |
2274 | ||
2275 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2276 | if (zvrf->fec_table[af] == NULL) | |
2277 | continue; | |
2278 | ||
2279 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2280 | rn = route_next(rn)) { | |
2281 | fec = rn->info; | |
2282 | if (!fec || list_isempty(fec->client_list)) | |
2283 | continue; | |
2284 | ||
2285 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2286 | fec_client)) { | |
2287 | if (fec_client == client) { | |
2288 | listnode_delete(fec->client_list, | |
2289 | fec_client); | |
2290 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2291 | && list_isempty(fec->client_list)) | |
2292 | fec_del(fec); | |
2293 | break; | |
2294 | } | |
2295 | } | |
2296 | } | |
2297 | } | |
5aba114a | 2298 | |
d62a17ae | 2299 | return 0; |
5aba114a DS |
2300 | } |
2301 | ||
651105b5 RW |
2302 | struct lsp_uninstall_args { |
2303 | struct hash *lsp_table; | |
2304 | enum lsp_types_t type; | |
2305 | }; | |
2306 | ||
2307 | /* | |
2308 | * Cleanup MPLS labels registered by this client. | |
2309 | */ | |
2310 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2311 | { | |
2312 | struct vrf *vrf; | |
2313 | struct zebra_vrf *zvrf; | |
2314 | ||
2315 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2316 | struct lsp_uninstall_args args; | |
2317 | ||
2318 | zvrf = vrf->info; | |
2319 | if (!zvrf) | |
2320 | continue; | |
2321 | ||
2322 | /* Cleanup LSPs. */ | |
2323 | args.lsp_table = zvrf->lsp_table; | |
2324 | args.type = lsp_type_from_re_type(client->proto); | |
2325 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2326 | &args); | |
2327 | ||
2328 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2329 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2330 | lsp_type_from_re_type(client->proto)); | |
2331 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2332 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2333 | } |
2334 | ||
2335 | return 0; | |
2336 | } | |
2337 | ||
f31e084c DS |
2338 | /* |
2339 | * Return FEC (if any) to which this label is bound. | |
2340 | * Note: Only works for per-prefix binding and when the label is not | |
2341 | * implicit-null. | |
2342 | * TODO: Currently walks entire table, can optimize later with another | |
2343 | * hash.. | |
2344 | */ | |
d62a17ae | 2345 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2346 | mpls_label_t label) | |
2347 | { | |
2348 | struct route_node *rn; | |
2349 | zebra_fec_t *fec; | |
2350 | int af; | |
2351 | ||
2352 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2353 | if (zvrf->fec_table[af] == NULL) | |
2354 | continue; | |
2355 | ||
2356 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2357 | rn = route_next(rn)) { | |
2358 | if (!rn->info) | |
2359 | continue; | |
2360 | fec = rn->info; | |
2361 | if (fec->label == label) | |
2362 | return fec; | |
2363 | } | |
2364 | } | |
f31e084c | 2365 | |
d62a17ae | 2366 | return NULL; |
f31e084c DS |
2367 | } |
2368 | ||
2369 | /* | |
2370 | * Inform if specified label is currently bound to a FEC or not. | |
2371 | */ | |
d62a17ae | 2372 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2373 | { |
d62a17ae | 2374 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2375 | } |
2376 | ||
2377 | /* | |
5aba114a | 2378 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2379 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2380 | * label forwarding entry. | |
9d303b37 | 2381 | */ |
d62a17ae | 2382 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2383 | mpls_label_t in_label) | |
2384 | { | |
2385 | struct route_table *table; | |
2386 | zebra_fec_t *fec; | |
2387 | char buf[BUFSIZ]; | |
2388 | mpls_label_t old_label; | |
2389 | int ret = 0; | |
2390 | ||
2391 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2392 | if (!table) | |
2393 | return -1; | |
2394 | ||
2395 | if (IS_ZEBRA_DEBUG_MPLS) | |
2396 | prefix2str(p, buf, BUFSIZ); | |
2397 | ||
2398 | /* Update existing FEC or create a new one. */ | |
2399 | fec = fec_find(table, p); | |
2400 | if (!fec) { | |
2401 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2402 | MPLS_INVALID_LABEL_INDEX); | |
2403 | if (!fec) { | |
2404 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2405 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2406 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2407 | return -1; |
2408 | } | |
2409 | ||
2410 | if (IS_ZEBRA_DEBUG_MPLS) | |
2411 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2412 | } else { | |
2413 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2414 | if (fec->label == in_label) | |
2415 | /* Duplicate config */ | |
2416 | return 0; | |
2417 | ||
2418 | /* Label change, update clients. */ | |
2419 | old_label = fec->label; | |
2420 | if (IS_ZEBRA_DEBUG_MPLS) | |
2421 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2422 | ||
2423 | fec->label = in_label; | |
2424 | fec_update_clients(fec); | |
2425 | ||
2426 | /* Update label forwarding entries appropriately */ | |
2427 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2428 | } | |
2429 | ||
2430 | return ret; | |
f31e084c DS |
2431 | } |
2432 | ||
2433 | /* | |
5aba114a DS |
2434 | * Remove static FEC to label binding. If there are no clients registered |
2435 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2436 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2437 | * client may need to be updated with derived label. | |
f31e084c | 2438 | */ |
d62a17ae | 2439 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2440 | { | |
2441 | struct route_table *table; | |
2442 | zebra_fec_t *fec; | |
2443 | mpls_label_t old_label; | |
2444 | char buf[BUFSIZ]; | |
2445 | ||
2446 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2447 | if (!table) | |
2448 | return -1; | |
2449 | ||
2450 | fec = fec_find(table, p); | |
2451 | if (!fec) { | |
2452 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2453 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2454 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2455 | return -1; |
2456 | } | |
2457 | ||
2458 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2459 | prefix2str(p, buf, BUFSIZ); | |
57592a53 AD |
2460 | zlog_debug("Delete fec %s label %u label index %u", buf, |
2461 | fec->label, fec->label_index); | |
d62a17ae | 2462 | } |
2463 | ||
2464 | old_label = fec->label; | |
2465 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2466 | fec->label = MPLS_INVALID_LABEL; | |
2467 | ||
2468 | /* If no client exists, just delete the FEC. */ | |
2469 | if (list_isempty(fec->client_list)) { | |
2470 | fec_del(fec); | |
2471 | return 0; | |
2472 | } | |
2473 | ||
2474 | /* Derive the local label (from label index) or reset it. */ | |
2475 | fec_derive_label_from_index(zvrf, fec); | |
2476 | ||
2477 | /* If there is a label change, update clients. */ | |
2478 | if (fec->label == old_label) | |
2479 | return 0; | |
2480 | fec_update_clients(fec); | |
2481 | ||
2482 | /* Update label forwarding entries appropriately */ | |
2483 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2484 | } |
2485 | ||
2486 | /* | |
2487 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2488 | */ | |
d62a17ae | 2489 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2490 | { |
d62a17ae | 2491 | struct route_node *rn; |
2492 | int af; | |
2493 | zebra_fec_t *fec; | |
2494 | char buf[BUFSIZ]; | |
2495 | int write = 0; | |
f31e084c | 2496 | |
d62a17ae | 2497 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2498 | if (zvrf->fec_table[af] == NULL) | |
2499 | continue; | |
f31e084c | 2500 | |
d62a17ae | 2501 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2502 | rn = route_next(rn)) { | |
2503 | if (!rn->info) | |
2504 | continue; | |
f31e084c | 2505 | |
d62a17ae | 2506 | char lstr[BUFSIZ]; |
2507 | fec = rn->info; | |
f31e084c | 2508 | |
d62a17ae | 2509 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2510 | continue; | |
f31e084c | 2511 | |
d62a17ae | 2512 | write = 1; |
2513 | prefix2str(&rn->p, buf, BUFSIZ); | |
2514 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2515 | label2str(fec->label, lstr, BUFSIZ)); | |
2516 | } | |
2517 | } | |
f31e084c | 2518 | |
d62a17ae | 2519 | return write; |
f31e084c DS |
2520 | } |
2521 | ||
2522 | /* | |
2523 | * Display MPLS FEC to label binding (VTY command handler). | |
2524 | */ | |
d62a17ae | 2525 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2526 | { |
d62a17ae | 2527 | struct route_node *rn; |
2528 | int af; | |
f31e084c | 2529 | |
d62a17ae | 2530 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2531 | if (zvrf->fec_table[af] == NULL) | |
2532 | continue; | |
f31e084c | 2533 | |
d62a17ae | 2534 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2535 | rn = route_next(rn)) { | |
2536 | if (!rn->info) | |
2537 | continue; | |
2538 | fec_print(rn->info, vty); | |
2539 | } | |
2540 | } | |
f31e084c DS |
2541 | } |
2542 | ||
2543 | /* | |
2544 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2545 | */ | |
d62a17ae | 2546 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2547 | struct prefix *p) | |
f31e084c | 2548 | { |
d62a17ae | 2549 | struct route_table *table; |
2550 | struct route_node *rn; | |
f31e084c | 2551 | |
d62a17ae | 2552 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2553 | if (!table) | |
2554 | return; | |
f31e084c | 2555 | |
d62a17ae | 2556 | apply_mask(p); |
2557 | rn = route_node_lookup(table, p); | |
2558 | if (!rn) | |
2559 | return; | |
f31e084c | 2560 | |
d62a17ae | 2561 | route_unlock_node(rn); |
2562 | if (!rn->info) | |
2563 | return; | |
f31e084c | 2564 | |
d62a17ae | 2565 | fec_print(rn->info, vty); |
f31e084c DS |
2566 | } |
2567 | ||
19474c9c SW |
2568 | static void mpls_zebra_nhg_update(struct route_entry *re, afi_t afi, |
2569 | struct nexthop_group *new_grp) | |
2570 | { | |
2571 | struct nhg_hash_entry *nhe; | |
2572 | ||
2573 | nhe = zebra_nhg_rib_find(0, new_grp, afi); | |
2574 | ||
2575 | zebra_nhg_re_update_ref(re, nhe); | |
2576 | } | |
2577 | ||
8f77d0ee DS |
2578 | static bool mpls_ftn_update_nexthop(int add, struct nexthop *nexthop, |
2579 | enum lsp_types_t type, mpls_label_t label) | |
2580 | { | |
2581 | if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE) | |
2582 | nexthop_add_labels(nexthop, type, 1, &label); | |
2583 | else if (!add && nexthop->nh_label_type == type) | |
2584 | nexthop_del_labels(nexthop); | |
2585 | else | |
2586 | return false; | |
2587 | ||
2588 | return true; | |
2589 | } | |
2590 | ||
ce549947 RW |
2591 | /* |
2592 | * Install/uninstall a FEC-To-NHLFE (FTN) binding. | |
2593 | */ | |
d62a17ae | 2594 | int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type, |
2595 | struct prefix *prefix, enum nexthop_types_t gtype, | |
e132dea0 RW |
2596 | union g_addr *gate, ifindex_t ifindex, uint8_t route_type, |
2597 | unsigned short route_instance, mpls_label_t out_label) | |
d62a17ae | 2598 | { |
2599 | struct route_table *table; | |
2600 | struct route_node *rn; | |
2601 | struct route_entry *re; | |
2602 | struct nexthop *nexthop; | |
da137142 | 2603 | struct nexthop_group new_grp = {}; |
8f77d0ee | 2604 | bool found; |
da137142 | 2605 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2606 | |
2607 | /* Lookup table. */ | |
da137142 | 2608 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2609 | if (!table) |
2610 | return -1; | |
2611 | ||
2612 | /* Lookup existing route */ | |
2613 | rn = route_node_get(table, prefix); | |
a2addae8 | 2614 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2615 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2616 | continue; | |
e132dea0 | 2617 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2618 | break; |
88d88a9c | 2619 | } |
ce549947 | 2620 | |
d62a17ae | 2621 | if (re == NULL) |
2622 | return -1; | |
2623 | ||
da137142 SW |
2624 | /* |
2625 | * Copy over current nexthops into a temporary group. | |
2626 | * We can't just change the values here since we are hashing | |
2627 | * on labels. We need to create a whole new group | |
2628 | */ | |
2629 | nexthop_group_copy(&new_grp, re->ng); | |
2630 | ||
8f77d0ee | 2631 | found = false; |
da137142 | 2632 | for (nexthop = new_grp.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 2633 | switch (nexthop->type) { |
2634 | case NEXTHOP_TYPE_IPV4: | |
2635 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
2636 | if (gtype != NEXTHOP_TYPE_IPV4 | |
2637 | && gtype != NEXTHOP_TYPE_IPV4_IFINDEX) | |
2638 | continue; | |
2639 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, &gate->ipv4)) | |
2640 | continue; | |
2641 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
2642 | && nexthop->ifindex != ifindex) | |
2643 | continue; | |
8f77d0ee DS |
2644 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2645 | out_label)) | |
da137142 | 2646 | break; |
8f77d0ee DS |
2647 | found = true; |
2648 | break; | |
d62a17ae | 2649 | case NEXTHOP_TYPE_IPV6: |
2650 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2651 | if (gtype != NEXTHOP_TYPE_IPV6 | |
2652 | && gtype != NEXTHOP_TYPE_IPV6_IFINDEX) | |
2653 | continue; | |
2654 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, &gate->ipv6)) | |
2655 | continue; | |
2656 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
2657 | && nexthop->ifindex != ifindex) | |
2658 | continue; | |
8f77d0ee DS |
2659 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2660 | out_label)) | |
da137142 | 2661 | break; |
8f77d0ee DS |
2662 | found = true; |
2663 | break; | |
d62a17ae | 2664 | default: |
2665 | break; | |
2666 | } | |
2667 | } | |
d62a17ae | 2668 | |
da137142 | 2669 | if (found) { |
da137142 SW |
2670 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
2671 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
19474c9c SW |
2672 | |
2673 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
2674 | ||
da137142 SW |
2675 | rib_queue_add(rn); |
2676 | } | |
2677 | ||
2678 | nexthops_free(new_grp.nexthop); | |
2679 | ||
fec211ad | 2680 | return found ? 0 : -1; |
ce549947 RW |
2681 | } |
2682 | ||
ea6b290b RW |
2683 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2684 | struct prefix *prefix, uint8_t route_type, | |
2685 | unsigned short route_instance) | |
2686 | { | |
2687 | struct route_table *table; | |
2688 | struct route_node *rn; | |
2689 | struct route_entry *re; | |
2690 | struct nexthop *nexthop; | |
19474c9c SW |
2691 | struct nexthop_group new_grp = {}; |
2692 | afi_t afi = family2afi(prefix->family); | |
ea6b290b RW |
2693 | |
2694 | /* Lookup table. */ | |
19474c9c | 2695 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
ea6b290b RW |
2696 | if (!table) |
2697 | return -1; | |
2698 | ||
2699 | /* Lookup existing route */ | |
2700 | rn = route_node_get(table, prefix); | |
2701 | RNODE_FOREACH_RE (rn, re) { | |
2702 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2703 | continue; | |
2704 | if (re->type == route_type && re->instance == route_instance) | |
2705 | break; | |
2706 | } | |
2707 | if (re == NULL) | |
2708 | return -1; | |
2709 | ||
19474c9c SW |
2710 | nexthop_group_copy(&new_grp, re->ng); |
2711 | ||
2712 | for (nexthop = new_grp.nexthop; nexthop; nexthop = nexthop->next) | |
ea6b290b RW |
2713 | nexthop_del_labels(nexthop); |
2714 | ||
2715 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2716 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
19474c9c SW |
2717 | |
2718 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
2719 | ||
2720 | nexthops_free(new_grp.nexthop); | |
2721 | ||
ea6b290b RW |
2722 | rib_queue_add(rn); |
2723 | ||
2724 | return 0; | |
2725 | } | |
2726 | ||
ce549947 RW |
2727 | /* |
2728 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
2729 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
2730 | * the out-label for an existing NHLFE (update case). | |
2731 | */ | |
d62a17ae | 2732 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2733 | mpls_label_t in_label, mpls_label_t out_label, | |
2734 | enum nexthop_types_t gtype, union g_addr *gate, | |
2735 | ifindex_t ifindex) | |
2736 | { | |
2737 | struct hash *lsp_table; | |
2738 | zebra_ile_t tmp_ile; | |
2739 | zebra_lsp_t *lsp; | |
2740 | zebra_nhlfe_t *nhlfe; | |
2741 | char buf[BUFSIZ]; | |
2742 | ||
2743 | /* Lookup table. */ | |
2744 | lsp_table = zvrf->lsp_table; | |
2745 | if (!lsp_table) | |
2746 | return -1; | |
2747 | ||
2748 | /* If entry is present, exit. */ | |
2749 | tmp_ile.in_label = in_label; | |
2750 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2751 | if (!lsp) | |
2752 | return -1; | |
2753 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2754 | if (nhlfe) { | |
2755 | struct nexthop *nh = nhlfe->nexthop; | |
2756 | ||
2757 | assert(nh); | |
2758 | assert(nh->nh_label); | |
2759 | ||
2760 | /* Clear deleted flag (in case it was set) */ | |
2761 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2762 | if (nh->nh_label->label[0] == out_label) | |
2763 | /* No change */ | |
2764 | return 0; | |
2765 | ||
2766 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2767 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2768 | zlog_debug( | |
2769 | "LSP in-label %u type %d nexthop %s " | |
2770 | "out-label changed to %u (old %u)", | |
2771 | in_label, type, buf, out_label, | |
2772 | nh->nh_label->label[0]); | |
2773 | } | |
2774 | ||
2775 | /* Update out label, trigger processing. */ | |
2776 | nh->nh_label->label[0] = out_label; | |
2777 | } else { | |
2778 | /* Add LSP entry to this nexthop */ | |
2779 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, out_label); | |
2780 | if (!nhlfe) | |
2781 | return -1; | |
2782 | ||
2783 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2784 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2785 | zlog_debug( | |
2786 | "Add LSP in-label %u type %d nexthop %s " | |
2787 | "out-label %u", | |
2788 | in_label, type, buf, out_label); | |
2789 | } | |
2790 | ||
2791 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
2792 | } | |
2793 | ||
2794 | /* Mark NHLFE, queue LSP for processing. */ | |
2795 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2796 | if (lsp_processq_add(lsp)) | |
2797 | return -1; | |
2798 | ||
2799 | return 0; | |
ce549947 RW |
2800 | } |
2801 | ||
2802 | /* | |
2803 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
2804 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
2805 | */ | |
d62a17ae | 2806 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2807 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
2808 | union g_addr *gate, ifindex_t ifindex) | |
2809 | { | |
2810 | struct hash *lsp_table; | |
2811 | zebra_ile_t tmp_ile; | |
2812 | zebra_lsp_t *lsp; | |
2813 | zebra_nhlfe_t *nhlfe; | |
2814 | char buf[BUFSIZ]; | |
2815 | ||
2816 | /* Lookup table. */ | |
2817 | lsp_table = zvrf->lsp_table; | |
2818 | if (!lsp_table) | |
2819 | return -1; | |
2820 | ||
2821 | /* If entry is not present, exit. */ | |
2822 | tmp_ile.in_label = in_label; | |
2823 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2824 | if (!lsp) | |
2825 | return 0; | |
2826 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2827 | if (!nhlfe) | |
2828 | return 0; | |
2829 | ||
2830 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2831 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2832 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
2833 | in_label, type, buf, nhlfe->flags); | |
2834 | } | |
2835 | ||
2836 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
2837 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
2838 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2839 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2840 | if (lsp_processq_add(lsp)) | |
2841 | return -1; | |
2842 | } else { | |
2843 | nhlfe_del(nhlfe); | |
2844 | ||
2845 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
2846 | if (!lsp->nhlfe_list | |
2847 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
2848 | if (IS_ZEBRA_DEBUG_MPLS) | |
2849 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
2850 | lsp->ile.in_label, lsp->flags); | |
2851 | ||
2852 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 2853 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 2854 | } |
2855 | } | |
2856 | return 0; | |
ce549947 RW |
2857 | } |
2858 | ||
ea6b290b RW |
2859 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2860 | mpls_label_t in_label) | |
2861 | { | |
2862 | struct hash *lsp_table; | |
2863 | zebra_ile_t tmp_ile; | |
2864 | zebra_lsp_t *lsp; | |
2865 | ||
2866 | /* Lookup table. */ | |
2867 | lsp_table = zvrf->lsp_table; | |
2868 | if (!lsp_table) | |
2869 | return -1; | |
2870 | ||
2871 | /* If entry is not present, exit. */ | |
2872 | tmp_ile.in_label = in_label; | |
2873 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2874 | if (!lsp) | |
2875 | return 0; | |
2876 | ||
2877 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
2878 | } | |
2879 | ||
ce549947 | 2880 | /* |
651105b5 | 2881 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
2882 | * If no other NHLFEs exist, the entry would be deleted. |
2883 | */ | |
651105b5 | 2884 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 2885 | { |
651105b5 | 2886 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 2887 | zebra_lsp_t *lsp; |
2888 | struct hash *lsp_table; | |
ce549947 | 2889 | |
e3b78da8 | 2890 | lsp = (zebra_lsp_t *)bucket->data; |
9ea660be | 2891 | if (!lsp->nhlfe_list) |
d62a17ae | 2892 | return; |
ce549947 | 2893 | |
651105b5 | 2894 | lsp_table = args->lsp_table; |
d62a17ae | 2895 | if (!lsp_table) |
2896 | return; | |
ce549947 | 2897 | |
651105b5 | 2898 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
2899 | } |
2900 | ||
2901 | /* | |
651105b5 RW |
2902 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
2903 | * LSP type. | |
ce549947 | 2904 | */ |
651105b5 RW |
2905 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
2906 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 2907 | { |
2908 | struct route_table *table; | |
2909 | struct route_node *rn; | |
2910 | struct route_entry *re; | |
2911 | struct nexthop *nexthop; | |
2912 | int update; | |
2913 | ||
2914 | /* Process routes of interested address-families. */ | |
2915 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2916 | if (!table) | |
2917 | return; | |
2918 | ||
2919 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
2920 | update = 0; | |
a2addae8 | 2921 | RNODE_FOREACH_RE (rn, re) { |
da137142 | 2922 | struct nexthop_group new_grp = {}; |
da137142 SW |
2923 | |
2924 | nexthop_group_copy(&new_grp, re->ng); | |
2925 | ||
2926 | for (nexthop = new_grp.nexthop; nexthop; | |
407c87a6 | 2927 | nexthop = nexthop->next) { |
651105b5 | 2928 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
2929 | continue; |
2930 | ||
d62a17ae | 2931 | nexthop_del_labels(nexthop); |
2932 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2933 | SET_FLAG(re->status, | |
332ad713 | 2934 | ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2935 | update = 1; |
2936 | } | |
da137142 | 2937 | |
19474c9c SW |
2938 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
2939 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
da137142 SW |
2940 | |
2941 | nexthops_free(new_grp.nexthop); | |
407c87a6 | 2942 | } |
d62a17ae | 2943 | |
2944 | if (update) | |
2945 | rib_queue_add(rn); | |
2946 | } | |
ce549947 RW |
2947 | } |
2948 | ||
1c1cf002 | 2949 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 2950 | /* |
2951 | * Check that the label values used in LSP creation are consistent. The | |
2952 | * main criteria is that if there is ECMP, the label operation must still | |
2953 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
2954 | * to current HW restrictions. | |
2955 | */ | |
d62a17ae | 2956 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
2957 | mpls_label_t in_label, | |
2958 | mpls_label_t out_label, | |
2959 | enum nexthop_types_t gtype, | |
2960 | union g_addr *gate, ifindex_t ifindex) | |
2961 | { | |
2962 | struct hash *slsp_table; | |
2963 | zebra_ile_t tmp_ile; | |
2964 | zebra_slsp_t *slsp; | |
2965 | zebra_snhlfe_t *snhlfe; | |
2966 | ||
2967 | /* Lookup table. */ | |
2968 | slsp_table = zvrf->slsp_table; | |
2969 | if (!slsp_table) | |
2970 | return 0; | |
2971 | ||
2972 | /* If entry is not present, exit. */ | |
2973 | tmp_ile.in_label = in_label; | |
2974 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
2975 | if (!slsp) | |
2976 | return 1; | |
2977 | ||
2978 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2979 | if (snhlfe) { | |
2980 | if (snhlfe->out_label == out_label) | |
2981 | return 1; | |
2982 | ||
2983 | /* If not only NHLFE, cannot allow label change. */ | |
2984 | if (snhlfe != slsp->snhlfe_list || snhlfe->next) | |
2985 | return 0; | |
2986 | } else { | |
2987 | /* If other NHLFEs exist, label operation must match. */ | |
2988 | if (slsp->snhlfe_list) { | |
2989 | int cur_op, new_op; | |
2990 | ||
2991 | cur_op = (slsp->snhlfe_list->out_label | |
70e98a7f DS |
2992 | == MPLS_LABEL_IMPLICIT_NULL); |
2993 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); | |
d62a17ae | 2994 | if (cur_op != new_op) |
2995 | return 0; | |
2996 | } | |
2997 | } | |
2998 | ||
2999 | /* Label values are good. */ | |
3000 | return 1; | |
7758e3f3 | 3001 | } |
1c1cf002 | 3002 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3003 | |
3004 | /* | |
3005 | * Add static LSP entry. This may be the first entry for this incoming label | |
3006 | * or an additional nexthop; an existing entry may also have outgoing label | |
3007 | * changed. | |
3008 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3009 | * NHLFEs). | |
3010 | */ | |
d62a17ae | 3011 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3012 | mpls_label_t out_label, | |
3013 | enum nexthop_types_t gtype, union g_addr *gate, | |
3014 | ifindex_t ifindex) | |
3015 | { | |
3016 | struct hash *slsp_table; | |
3017 | zebra_ile_t tmp_ile; | |
3018 | zebra_slsp_t *slsp; | |
3019 | zebra_snhlfe_t *snhlfe; | |
3020 | char buf[BUFSIZ]; | |
3021 | ||
3022 | /* Lookup table. */ | |
3023 | slsp_table = zvrf->slsp_table; | |
3024 | if (!slsp_table) | |
3025 | return -1; | |
3026 | ||
3027 | /* If entry is present, exit. */ | |
3028 | tmp_ile.in_label = in_label; | |
3029 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
3030 | if (!slsp) | |
3031 | return -1; | |
3032 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3033 | if (snhlfe) { | |
3034 | if (snhlfe->out_label == out_label) | |
3035 | /* No change */ | |
3036 | return 0; | |
3037 | ||
3038 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3039 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3040 | zlog_debug( | |
3041 | "Upd static LSP in-label %u nexthop %s " | |
3042 | "out-label %u (old %u)", | |
3043 | in_label, buf, out_label, snhlfe->out_label); | |
3044 | } | |
3045 | snhlfe->out_label = out_label; | |
3046 | } else { | |
3047 | /* Add static LSP entry to this nexthop */ | |
3048 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
3049 | if (!snhlfe) | |
3050 | return -1; | |
3051 | ||
3052 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3053 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3054 | zlog_debug( | |
3055 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3056 | in_label, buf, out_label); | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | /* (Re)Install LSP in the main table. */ | |
3061 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, out_label, gtype, | |
3062 | gate, ifindex)) | |
3063 | return -1; | |
3064 | ||
3065 | return 0; | |
7758e3f3 | 3066 | } |
3067 | ||
3068 | /* | |
3069 | * Delete static LSP entry. This may be the delete of one particular | |
3070 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3071 | * all NHLFEs). | |
3072 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3073 | * LSP configuration. | |
3074 | */ | |
d62a17ae | 3075 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3076 | enum nexthop_types_t gtype, union g_addr *gate, | |
3077 | ifindex_t ifindex) | |
3078 | { | |
3079 | struct hash *slsp_table; | |
3080 | zebra_ile_t tmp_ile; | |
3081 | zebra_slsp_t *slsp; | |
3082 | zebra_snhlfe_t *snhlfe; | |
3083 | ||
3084 | /* Lookup table. */ | |
3085 | slsp_table = zvrf->slsp_table; | |
3086 | if (!slsp_table) | |
3087 | return -1; | |
3088 | ||
3089 | /* If entry is not present, exit. */ | |
3090 | tmp_ile.in_label = in_label; | |
3091 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3092 | if (!slsp) | |
3093 | return 0; | |
3094 | ||
3095 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3096 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3097 | if (IS_ZEBRA_DEBUG_MPLS) | |
3098 | zlog_debug("Del static LSP in-label %u", in_label); | |
3099 | ||
3100 | /* Uninstall entire LSP from the main table. */ | |
3101 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3102 | ||
3103 | /* Delete all static NHLFEs */ | |
3104 | snhlfe_del_all(slsp); | |
3105 | } else { | |
3106 | /* Find specific NHLFE, exit if not found. */ | |
3107 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3108 | if (!snhlfe) | |
3109 | return 0; | |
3110 | ||
3111 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3112 | char buf[BUFSIZ]; | |
3113 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3114 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
3115 | in_label, buf); | |
3116 | } | |
3117 | ||
3118 | /* Uninstall LSP from the main table. */ | |
3119 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
3120 | gate, ifindex); | |
3121 | ||
3122 | /* Delete static LSP NHLFE */ | |
3123 | snhlfe_del(snhlfe); | |
3124 | } | |
3125 | ||
3126 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
3127 | * above. */ | |
3128 | if (!slsp->snhlfe_list) { | |
3129 | slsp = hash_release(slsp_table, &tmp_ile); | |
0a22ddfb | 3130 | XFREE(MTYPE_SLSP, slsp); |
d62a17ae | 3131 | } |
3132 | ||
3133 | return 0; | |
7758e3f3 | 3134 | } |
3135 | ||
40c7bdb0 | 3136 | /* |
3137 | * Schedule all MPLS label forwarding entries for processing. | |
3138 | * Called upon changes that may affect one or more of them such as | |
3139 | * interface or nexthop state changes. | |
3140 | */ | |
d62a17ae | 3141 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3142 | { |
d62a17ae | 3143 | if (!zvrf) |
3144 | return; | |
3145 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3146 | } |
3147 | ||
3ab18ff2 | 3148 | /* |
3149 | * Display MPLS label forwarding table for a specific LSP | |
3150 | * (VTY command handler). | |
3151 | */ | |
d62a17ae | 3152 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3153 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3154 | { |
d62a17ae | 3155 | struct hash *lsp_table; |
3156 | zebra_lsp_t *lsp; | |
3157 | zebra_ile_t tmp_ile; | |
3158 | json_object *json = NULL; | |
3ab18ff2 | 3159 | |
d62a17ae | 3160 | /* Lookup table. */ |
3161 | lsp_table = zvrf->lsp_table; | |
3162 | if (!lsp_table) | |
3163 | return; | |
3ab18ff2 | 3164 | |
d62a17ae | 3165 | /* If entry is not present, exit. */ |
3166 | tmp_ile.in_label = label; | |
3167 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3168 | if (!lsp) | |
3169 | return; | |
3ab18ff2 | 3170 | |
d62a17ae | 3171 | if (use_json) { |
3172 | json = lsp_json(lsp); | |
9d303b37 DL |
3173 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3174 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3175 | json_object_free(json); |
3176 | } else | |
3177 | lsp_print(lsp, (void *)vty); | |
3ab18ff2 | 3178 | } |
3179 | ||
3180 | /* | |
3181 | * Display MPLS label forwarding table (VTY command handler). | |
3182 | */ | |
d62a17ae | 3183 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3184 | bool use_json) |
d62a17ae | 3185 | { |
3186 | char buf[BUFSIZ]; | |
3187 | json_object *json = NULL; | |
3188 | zebra_lsp_t *lsp = NULL; | |
3189 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3190 | struct listnode *node = NULL; |
3191 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3192 | ||
3193 | if (use_json) { | |
3194 | json = json_object_new_object(); | |
3195 | ||
3196 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3197 | json_object_object_add( | |
3198 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
3199 | lsp_json(lsp)); | |
3200 | ||
9d303b37 DL |
3201 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3202 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3203 | json_object_free(json); |
3204 | } else { | |
a971aeb6 RW |
3205 | struct ttable *tt; |
3206 | ||
3207 | /* Prepare table. */ | |
3208 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3209 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3210 | tt->style.cell.rpad = 2; | |
3211 | tt->style.corner = '+'; | |
3212 | ttable_restyle(tt); | |
3213 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3214 | |
3215 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
3216 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
3217 | nhlfe = nhlfe->next) { | |
a971aeb6 RW |
3218 | struct nexthop *nexthop; |
3219 | const char *out_label_str; | |
3220 | char nh_buf[NEXTHOP_STRLEN]; | |
3221 | ||
d62a17ae | 3222 | nexthop = nhlfe->nexthop; |
3223 | ||
3224 | switch (nexthop->type) { | |
996c9314 | 3225 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3226 | struct zebra_ns *zns; |
b9abd9ad DS |
3227 | struct interface *ifp; |
3228 | ||
86f07f44 PG |
3229 | zns = zebra_ns_lookup(NS_DEFAULT); |
3230 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3231 | zns, nexthop->ifindex); |
3232 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3233 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3234 | break; |
3235 | } | |
d62a17ae | 3236 | case NEXTHOP_TYPE_IPV4: |
3237 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3238 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3239 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3240 | break; |
3241 | case NEXTHOP_TYPE_IPV6: | |
3242 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3243 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3244 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3245 | break; |
3246 | default: | |
3247 | break; | |
3248 | } | |
3249 | ||
b9abd9ad | 3250 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3251 | out_label_str = mpls_label2str( |
3252 | nexthop->nh_label->num_labels, | |
3253 | &nexthop->nh_label->label[0], | |
3254 | buf, BUFSIZ, 1); | |
b9abd9ad | 3255 | else |
a971aeb6 RW |
3256 | out_label_str = "-"; |
3257 | ||
3258 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3259 | lsp->ile.in_label, | |
3260 | nhlfe_type2str(nhlfe->type), | |
3261 | nh_buf, out_label_str); | |
d62a17ae | 3262 | } |
3263 | } | |
3264 | ||
a971aeb6 RW |
3265 | /* Dump the generated table. */ |
3266 | if (tt->nrows > 1) { | |
3267 | char *table = ttable_dump(tt, "\n"); | |
3268 | vty_out(vty, "%s\n", table); | |
3269 | XFREE(MTYPE_TMP, table); | |
3270 | } | |
3271 | ttable_del(tt); | |
d62a17ae | 3272 | } |
3273 | ||
6a154c88 | 3274 | list_delete(&lsp_list); |
3ab18ff2 | 3275 | } |
3276 | ||
7758e3f3 | 3277 | /* |
3278 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3279 | */ | |
d62a17ae | 3280 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3281 | { | |
3282 | zebra_slsp_t *slsp; | |
3283 | zebra_snhlfe_t *snhlfe; | |
3284 | struct listnode *node; | |
3285 | struct list *slsp_list = | |
3286 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
3287 | ||
3288 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
3289 | for (snhlfe = slsp->snhlfe_list; snhlfe; | |
3290 | snhlfe = snhlfe->next) { | |
0af35d90 | 3291 | char buf[BUFSIZ]; |
d62a17ae | 3292 | char lstr[30]; |
3293 | ||
0af35d90 | 3294 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 3295 | switch (snhlfe->out_label) { |
70e98a7f DS |
3296 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3297 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3298 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3299 | break; | |
70e98a7f | 3300 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3301 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3302 | break; | |
3303 | default: | |
3304 | sprintf(lstr, "%u", snhlfe->out_label); | |
3305 | break; | |
3306 | } | |
3307 | ||
3308 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
3309 | buf, lstr); | |
3310 | } | |
3311 | } | |
b78b820d | 3312 | |
6a154c88 | 3313 | list_delete(&slsp_list); |
d62a17ae | 3314 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3315 | } |
3316 | ||
1b6d5c7e VV |
3317 | /* |
3318 | * Add/update global label block. | |
3319 | */ | |
d7c0a89a QY |
3320 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3321 | uint32_t end_label) | |
1b6d5c7e | 3322 | { |
d62a17ae | 3323 | zvrf->mpls_srgb.start_label = start_label; |
3324 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3325 | |
d62a17ae | 3326 | /* Evaluate registered FECs to see if any get a label or not. */ |
3327 | fec_evaluate(zvrf); | |
3328 | return 0; | |
1b6d5c7e VV |
3329 | } |
3330 | ||
3331 | /* | |
3332 | * Delete global label block. | |
3333 | */ | |
d62a17ae | 3334 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3335 | { |
d62a17ae | 3336 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3337 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3338 | |
d62a17ae | 3339 | /* Process registered FECs to clear their local label, if needed. */ |
3340 | fec_evaluate(zvrf); | |
3341 | return 0; | |
1b6d5c7e VV |
3342 | } |
3343 | ||
3344 | /* | |
3345 | * Display MPLS global label block configuration (VTY command handler). | |
3346 | */ | |
d62a17ae | 3347 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3348 | { |
d62a17ae | 3349 | if (zvrf->mpls_srgb.start_label == 0) |
3350 | return 0; | |
1b6d5c7e | 3351 | |
d62a17ae | 3352 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3353 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3354 | vty_out(vty, "mpls label global-block %u %u\n", | |
3355 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3356 | } | |
1b6d5c7e | 3357 | |
d62a17ae | 3358 | return 1; |
1b6d5c7e VV |
3359 | } |
3360 | ||
84915b0a | 3361 | /* |
3362 | * Called when VRF becomes inactive, cleans up information but keeps | |
3363 | * the table itself. | |
84915b0a | 3364 | */ |
3365 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3366 | { | |
c2e10644 MS |
3367 | struct zebra_vrf *def_zvrf; |
3368 | afi_t afi; | |
3369 | ||
3370 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3371 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3372 | else { | |
3373 | /* | |
3374 | * For other vrfs, we try to remove associated LSPs; we locate | |
3375 | * the LSPs in the default vrf. | |
3376 | */ | |
3377 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3378 | ||
3379 | /* At shutdown, the default may be gone already */ | |
3380 | if (def_zvrf == NULL) | |
3381 | return; | |
3382 | ||
3383 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3384 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3385 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3386 | } | |
3387 | } | |
84915b0a | 3388 | } |
3389 | ||
40c7bdb0 | 3390 | /* |
3391 | * Called upon process exiting, need to delete LSP forwarding | |
3392 | * entries from the kernel. | |
3393 | * NOTE: Currently supported only for default VRF. | |
3394 | */ | |
d62a17ae | 3395 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3396 | { |
d62a17ae | 3397 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3398 | hash_clean(zvrf->lsp_table, NULL); | |
3399 | hash_free(zvrf->lsp_table); | |
3400 | hash_clean(zvrf->slsp_table, NULL); | |
3401 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3402 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3403 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3404 | } |
3405 | ||
7758e3f3 | 3406 | /* |
3407 | * Allocate MPLS tables for this VRF and do other initialization. | |
3408 | * NOTE: Currently supported only for default VRF. | |
3409 | */ | |
d62a17ae | 3410 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3411 | { |
d62a17ae | 3412 | if (!zvrf) |
3413 | return; | |
996c9314 LB |
3414 | zvrf->slsp_table = |
3415 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3416 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3417 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3418 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3419 | zvrf->mpls_flags = 0; | |
3420 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3421 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3422 | } |
3423 | ||
3424 | /* | |
3425 | * Global MPLS initialization. | |
3426 | */ | |
d62a17ae | 3427 | void zebra_mpls_init(void) |
7758e3f3 | 3428 | { |
d62a17ae | 3429 | mpls_enabled = 0; |
33c32282 | 3430 | |
d62a17ae | 3431 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3432 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3433 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3434 | return; |
3435 | } | |
fe6c7157 | 3436 | |
2561d12e | 3437 | if (!mpls_processq_init()) |
d62a17ae | 3438 | mpls_enabled = 1; |
453844ab | 3439 | |
21ccc0cf | 3440 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 3441 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 3442 | } |