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7758e3f3 | 1 | /* Zebra MPLS code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7758e3f3 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
7758e3f3 | 26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
b78b820d | 37 | #include "lib/json.h" |
7758e3f3 | 38 | |
39 | #include "zebra/rib.h" | |
40 | #include "zebra/rt.h" | |
86f07f44 | 41 | #include "zebra/interface.h" |
7758e3f3 | 42 | #include "zebra/zserv.h" |
3801e764 | 43 | #include "zebra/zebra_router.h" |
7758e3f3 | 44 | #include "zebra/redistribute.h" |
45 | #include "zebra/debug.h" | |
46 | #include "zebra/zebra_memory.h" | |
47 | #include "zebra/zebra_vrf.h" | |
48 | #include "zebra/zebra_mpls.h" | |
43e52561 | 49 | #include "zebra/zebra_errors.h" |
7758e3f3 | 50 | |
d62a17ae | 51 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object") |
52 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object") | |
53 | DEFINE_MTYPE_STATIC(ZEBRA, SLSP, "MPLS static LSP config") | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object") | |
55 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE, "MPLS static nexthop object") | |
56 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE_IFNAME, "MPLS static nexthop ifname") | |
7758e3f3 | 57 | |
fe6c7157 RW |
58 | int mpls_enabled; |
59 | ||
7758e3f3 | 60 | /* static function declarations */ |
f31e084c | 61 | |
d62a17ae | 62 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
63 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
64 | zebra_fec_t *fec); | |
d62a17ae | 65 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
66 | struct route_node *rn, struct route_entry *re); | |
67 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
68 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
69 | mpls_label_t old_label); | |
70 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
71 | static void fec_update_clients(zebra_fec_t *fec); | |
72 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
73 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
74 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
75 | mpls_label_t label, uint32_t flags, |
76 | uint32_t label_index); | |
d62a17ae | 77 | static int fec_del(zebra_fec_t *fec); |
78 | ||
d8b87afe | 79 | static unsigned int label_hash(const void *p); |
74df8d6d | 80 | static bool label_cmp(const void *p1, const void *p2); |
d62a17ae | 81 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
82 | struct nexthop *nexthop); | |
83 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
84 | struct nexthop *nexthop); | |
85 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
86 | ||
87 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp); | |
e3b78da8 TB |
88 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt); |
89 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt); | |
d62a17ae | 90 | static wq_item_status lsp_process(struct work_queue *wq, void *data); |
91 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
92 | static void lsp_processq_complete(struct work_queue *wq); | |
93 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
94 | static void *lsp_alloc(void *p); | |
95 | ||
96 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size); | |
97 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, | |
98 | union g_addr *gate, ifindex_t ifindex); | |
99 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
100 | enum nexthop_types_t gtype, union g_addr *gate, | |
101 | ifindex_t ifindex); | |
102 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
103 | enum nexthop_types_t gtype, union g_addr *gate, | |
104 | ifindex_t ifindex, mpls_label_t out_label); | |
105 | static int nhlfe_del(zebra_nhlfe_t *snhlfe); | |
106 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, | |
8ecdb26e | 107 | struct mpls_label_stack *nh_label); |
d62a17ae | 108 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
109 | enum lsp_types_t type); | |
110 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
111 | mpls_label_t in_label); | |
112 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty); | |
113 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt); | |
114 | static void *slsp_alloc(void *p); | |
115 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, | |
116 | union g_addr *gate, ifindex_t ifindex); | |
117 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, | |
118 | enum nexthop_types_t gtype, | |
119 | union g_addr *gate, ifindex_t ifindex); | |
120 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, | |
121 | enum nexthop_types_t gtype, | |
122 | union g_addr *gate, ifindex_t ifindex, | |
123 | mpls_label_t out_label); | |
124 | static int snhlfe_del(zebra_snhlfe_t *snhlfe); | |
125 | static int snhlfe_del_all(zebra_slsp_t *slsp); | |
126 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size); | |
7758e3f3 | 127 | |
128 | ||
129 | /* Static functions */ | |
130 | ||
3d468f66 DS |
131 | /* |
132 | * Handle failure in LSP install, clear flags for NHLFE. | |
133 | */ | |
134 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
135 | { | |
136 | zebra_nhlfe_t *nhlfe; | |
137 | struct nexthop *nexthop; | |
138 | ||
139 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
140 | nexthop = nhlfe->nexthop; | |
141 | if (!nexthop) | |
142 | continue; | |
143 | ||
144 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
145 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
146 | } | |
147 | } | |
148 | ||
a64448ba DS |
149 | /* |
150 | * Install label forwarding entry based on labeled-route entry. | |
151 | */ | |
d62a17ae | 152 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
153 | struct route_node *rn, struct route_entry *re) | |
154 | { | |
155 | struct hash *lsp_table; | |
156 | zebra_ile_t tmp_ile; | |
157 | zebra_lsp_t *lsp; | |
158 | zebra_nhlfe_t *nhlfe; | |
159 | struct nexthop *nexthop; | |
160 | enum lsp_types_t lsp_type; | |
161 | char buf[BUFSIZ]; | |
162 | int added, changed; | |
163 | ||
164 | /* Lookup table. */ | |
165 | lsp_table = zvrf->lsp_table; | |
166 | if (!lsp_table) | |
167 | return -1; | |
168 | ||
169 | lsp_type = lsp_type_from_re_type(re->type); | |
170 | added = changed = 0; | |
171 | ||
172 | /* Locate or allocate LSP entry. */ | |
173 | tmp_ile.in_label = label; | |
174 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
175 | if (!lsp) | |
176 | return -1; | |
177 | ||
178 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
179 | * recursive nexthops right now, because intermediate hops won't | |
180 | * understand | |
181 | * the label advertised by the recursive nexthop (plus we don't have the | |
182 | * logic yet to push multiple labels). | |
183 | */ | |
7ee30f28 | 184 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 185 | /* Skip inactive and recursive entries. */ |
186 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
187 | continue; | |
188 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
189 | continue; | |
190 | ||
191 | nhlfe = nhlfe_find(lsp, lsp_type, nexthop->type, &nexthop->gate, | |
192 | nexthop->ifindex); | |
193 | if (nhlfe) { | |
194 | /* Clear deleted flag (in case it was set) */ | |
195 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
196 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
197 | /* No change */ | |
198 | continue; | |
199 | ||
200 | ||
201 | if (IS_ZEBRA_DEBUG_MPLS) { | |
202 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
203 | zlog_debug( | |
204 | "LSP in-label %u type %d nexthop %s " | |
205 | "out-label changed", | |
206 | lsp->ile.in_label, lsp_type, buf); | |
207 | } | |
208 | ||
209 | /* Update out label, trigger processing. */ | |
210 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
211 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
212 | changed++; | |
213 | } else { | |
214 | /* Add LSP entry to this nexthop */ | |
215 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
216 | &nexthop->gate, nexthop->ifindex, | |
217 | nexthop->nh_label->label[0]); | |
218 | if (!nhlfe) | |
219 | return -1; | |
220 | ||
221 | if (IS_ZEBRA_DEBUG_MPLS) { | |
222 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
223 | zlog_debug( | |
224 | "Add LSP in-label %u type %d nexthop %s " | |
225 | "out-label %u", | |
226 | lsp->ile.in_label, lsp_type, buf, | |
227 | nexthop->nh_label->label[0]); | |
228 | } | |
229 | ||
230 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
231 | ||
232 | /* Mark NHLFE as changed. */ | |
233 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
234 | added++; | |
235 | } | |
236 | } | |
237 | ||
238 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
239 | * case), delete the LSP entry; this case results in somewhat ugly | |
240 | * logging. | |
241 | */ | |
242 | if (added || changed) { | |
243 | if (lsp_processq_add(lsp)) | |
244 | return -1; | |
245 | } else if (!lsp->nhlfe_list | |
246 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
247 | if (IS_ZEBRA_DEBUG_MPLS) | |
248 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
249 | lsp->ile.in_label, lsp->flags); | |
250 | ||
251 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 252 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 253 | } |
254 | ||
255 | return 0; | |
a64448ba DS |
256 | } |
257 | ||
258 | /* | |
259 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
260 | * NHLFEs are removed, the entire entry is deleted. | |
261 | */ | |
d62a17ae | 262 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
263 | { | |
264 | struct hash *lsp_table; | |
265 | zebra_ile_t tmp_ile; | |
266 | zebra_lsp_t *lsp; | |
267 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
268 | char buf[BUFSIZ]; | |
269 | ||
270 | /* Lookup table. */ | |
271 | lsp_table = zvrf->lsp_table; | |
272 | if (!lsp_table) | |
273 | return -1; | |
274 | ||
275 | /* If entry is not present, exit. */ | |
276 | tmp_ile.in_label = label; | |
277 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
278 | if (!lsp || !lsp->nhlfe_list) | |
279 | return 0; | |
280 | ||
281 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
282 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
283 | nhlfe_next = nhlfe->next; | |
284 | ||
285 | /* Skip static NHLFEs */ | |
286 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
287 | continue; | |
288 | ||
289 | if (IS_ZEBRA_DEBUG_MPLS) { | |
290 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
291 | zlog_debug( | |
292 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
293 | label, nhlfe->type, buf, nhlfe->flags); | |
294 | } | |
295 | ||
296 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
297 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
298 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
299 | } else { | |
300 | nhlfe_del(nhlfe); | |
301 | } | |
302 | } | |
303 | ||
304 | /* Queue LSP for processing, if needed, else delete. */ | |
305 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
306 | if (lsp_processq_add(lsp)) | |
307 | return -1; | |
308 | } else if (!lsp->nhlfe_list | |
309 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
310 | if (IS_ZEBRA_DEBUG_MPLS) | |
311 | zlog_debug("Del LSP in-label %u flags 0x%x", | |
312 | lsp->ile.in_label, lsp->flags); | |
313 | ||
314 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 315 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 316 | } |
317 | ||
318 | return 0; | |
a64448ba DS |
319 | } |
320 | ||
28d58fd7 VV |
321 | /* |
322 | * This function is invoked upon change to label block configuration; it | |
323 | * will walk all registered FECs with label-index and appropriately update | |
324 | * their local labels and trigger client updates. | |
325 | */ | |
d62a17ae | 326 | static void fec_evaluate(struct zebra_vrf *zvrf) |
327 | { | |
328 | struct route_node *rn; | |
329 | zebra_fec_t *fec; | |
d7c0a89a | 330 | uint32_t old_label, new_label; |
d62a17ae | 331 | int af; |
332 | char buf[BUFSIZ]; | |
333 | ||
334 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
335 | if (zvrf->fec_table[af] == NULL) | |
336 | continue; | |
337 | ||
338 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
339 | rn = route_next(rn)) { | |
340 | if ((fec = rn->info) == NULL) | |
341 | continue; | |
342 | ||
343 | /* Skip configured FECs and those without a label index. | |
344 | */ | |
345 | if (fec->flags & FEC_FLAG_CONFIGURED | |
346 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
347 | continue; | |
348 | ||
349 | if (IS_ZEBRA_DEBUG_MPLS) | |
350 | prefix2str(&rn->p, buf, BUFSIZ); | |
351 | ||
352 | /* Save old label, determine new label. */ | |
353 | old_label = fec->label; | |
354 | new_label = | |
355 | zvrf->mpls_srgb.start_label + fec->label_index; | |
356 | if (new_label >= zvrf->mpls_srgb.end_label) | |
357 | new_label = MPLS_INVALID_LABEL; | |
358 | ||
359 | /* If label has changed, update FEC and clients. */ | |
360 | if (new_label == old_label) | |
361 | continue; | |
362 | ||
363 | if (IS_ZEBRA_DEBUG_MPLS) | |
364 | zlog_debug( | |
365 | "Update fec %s new label %u upon label block", | |
366 | buf, new_label); | |
367 | ||
368 | fec->label = new_label; | |
369 | fec_update_clients(fec); | |
370 | ||
371 | /* Update label forwarding entries appropriately */ | |
372 | fec_change_update_lsp(zvrf, fec, old_label); | |
373 | } | |
374 | } | |
28d58fd7 VV |
375 | } |
376 | ||
377 | /* | |
378 | * Derive (if possible) and update the local label for the FEC based on | |
379 | * its label index. The index is "acceptable" if it falls within the | |
380 | * globally configured label block (SRGB). | |
381 | */ | |
d7c0a89a QY |
382 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
383 | zebra_fec_t *fec) | |
28d58fd7 | 384 | { |
d7c0a89a | 385 | uint32_t label; |
28d58fd7 | 386 | |
d62a17ae | 387 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
388 | && zvrf->mpls_srgb.start_label | |
389 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
390 | < zvrf->mpls_srgb.end_label)) | |
391 | fec->label = label; | |
392 | else | |
393 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 394 | |
d62a17ae | 395 | return fec->label; |
28d58fd7 VV |
396 | } |
397 | ||
a64448ba DS |
398 | /* |
399 | * There is a change for this FEC. Install or uninstall label forwarding | |
400 | * entries, as appropriate. | |
401 | */ | |
d62a17ae | 402 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
403 | mpls_label_t old_label) | |
a64448ba | 404 | { |
d62a17ae | 405 | struct route_table *table; |
406 | struct route_node *rn; | |
407 | struct route_entry *re; | |
408 | afi_t afi; | |
a64448ba | 409 | |
d62a17ae | 410 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
411 | if (old_label != MPLS_INVALID_LABEL |
412 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 413 | lsp_uninstall(zvrf, old_label); |
a64448ba | 414 | |
d62a17ae | 415 | /* Install label forwarding entry corr. to new label, if needed. */ |
416 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 417 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 418 | return 0; |
a64448ba | 419 | |
d62a17ae | 420 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
421 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
422 | if (!table) | |
423 | return 0; | |
a64448ba | 424 | |
d62a17ae | 425 | /* See if labeled route exists. */ |
426 | rn = route_node_lookup(table, &fec->rn->p); | |
427 | if (!rn) | |
428 | return 0; | |
a64448ba | 429 | |
a2addae8 | 430 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 431 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
432 | break; | |
433 | } | |
a64448ba | 434 | |
d62a17ae | 435 | if (!re || !zebra_rib_labeled_unicast(re)) |
436 | return 0; | |
a64448ba | 437 | |
d62a17ae | 438 | if (lsp_install(zvrf, fec->label, rn, re)) |
439 | return -1; | |
a64448ba | 440 | |
d62a17ae | 441 | return 0; |
a64448ba DS |
442 | } |
443 | ||
5aba114a DS |
444 | /* |
445 | * Inform about FEC to a registered client. | |
446 | */ | |
d62a17ae | 447 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 448 | { |
d62a17ae | 449 | struct stream *s; |
450 | struct route_node *rn; | |
5aba114a | 451 | |
d62a17ae | 452 | rn = fec->rn; |
5aba114a | 453 | |
d62a17ae | 454 | /* Get output stream. */ |
1002497a | 455 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 456 | |
7cf15b25 | 457 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 458 | |
d62a17ae | 459 | stream_putw(s, rn->p.family); |
460 | stream_put_prefix(s, &rn->p); | |
461 | stream_putl(s, fec->label); | |
462 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 463 | return zserv_send_message(client, s); |
5aba114a DS |
464 | } |
465 | ||
466 | /* | |
467 | * Update all registered clients about this FEC. Caller should've updated | |
468 | * FEC and ensure no duplicate updates. | |
469 | */ | |
d62a17ae | 470 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 471 | { |
d62a17ae | 472 | struct listnode *node; |
473 | struct zserv *client; | |
5aba114a | 474 | |
d62a17ae | 475 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
476 | if (IS_ZEBRA_DEBUG_MPLS) | |
477 | zlog_debug("Update client %s", | |
478 | zebra_route_string(client->proto)); | |
479 | fec_send(fec, client); | |
480 | } | |
5aba114a DS |
481 | } |
482 | ||
483 | ||
f31e084c DS |
484 | /* |
485 | * Print a FEC-label binding entry. | |
486 | */ | |
d62a17ae | 487 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
488 | { | |
489 | struct route_node *rn; | |
490 | struct listnode *node; | |
491 | struct zserv *client; | |
492 | char buf[BUFSIZ]; | |
493 | ||
494 | rn = fec->rn; | |
495 | prefix2str(&rn->p, buf, BUFSIZ); | |
496 | vty_out(vty, "%s\n", buf); | |
497 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
498 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
499 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
500 | vty_out(vty, "\n"); | |
501 | if (!list_isempty(fec->client_list)) { | |
502 | vty_out(vty, " Client list:"); | |
503 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
504 | vty_out(vty, " %s(fd %d)", | |
505 | zebra_route_string(client->proto), | |
506 | client->sock); | |
507 | vty_out(vty, "\n"); | |
508 | } | |
f31e084c DS |
509 | } |
510 | ||
511 | /* | |
512 | * Locate FEC-label binding that matches with passed info. | |
513 | */ | |
d62a17ae | 514 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 515 | { |
d62a17ae | 516 | struct route_node *rn; |
f31e084c | 517 | |
d62a17ae | 518 | apply_mask(p); |
519 | rn = route_node_lookup(table, p); | |
520 | if (!rn) | |
521 | return NULL; | |
f31e084c | 522 | |
d62a17ae | 523 | route_unlock_node(rn); |
524 | return (rn->info); | |
f31e084c DS |
525 | } |
526 | ||
527 | /* | |
5aba114a DS |
528 | * Add a FEC. This may be upon a client registering for a binding |
529 | * or when a binding is configured. | |
f31e084c | 530 | */ |
d62a17ae | 531 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
532 | mpls_label_t label, uint32_t flags, |
533 | uint32_t label_index) | |
f31e084c | 534 | { |
d62a17ae | 535 | struct route_node *rn; |
536 | zebra_fec_t *fec; | |
f31e084c | 537 | |
d62a17ae | 538 | apply_mask(p); |
f31e084c | 539 | |
d62a17ae | 540 | /* Lookup (or add) route node.*/ |
541 | rn = route_node_get(table, p); | |
542 | if (!rn) | |
543 | return NULL; | |
f31e084c | 544 | |
d62a17ae | 545 | fec = rn->info; |
f31e084c | 546 | |
d62a17ae | 547 | if (!fec) { |
548 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 549 | |
d62a17ae | 550 | rn->info = fec; |
551 | fec->rn = rn; | |
552 | fec->label = label; | |
553 | fec->client_list = list_new(); | |
554 | } else | |
555 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 556 | |
d62a17ae | 557 | fec->label_index = label_index; |
558 | fec->flags = flags; | |
f31e084c | 559 | |
d62a17ae | 560 | return fec; |
f31e084c DS |
561 | } |
562 | ||
563 | /* | |
5aba114a DS |
564 | * Delete a FEC. This may be upon the last client deregistering for |
565 | * a FEC and no binding exists or when the binding is deleted and there | |
566 | * are no registered clients. | |
f31e084c | 567 | */ |
d62a17ae | 568 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 569 | { |
6a154c88 | 570 | list_delete(&fec->client_list); |
d62a17ae | 571 | fec->rn->info = NULL; |
572 | route_unlock_node(fec->rn); | |
573 | XFREE(MTYPE_FEC, fec); | |
574 | return 0; | |
f31e084c DS |
575 | } |
576 | ||
7758e3f3 | 577 | /* |
578 | * Hash function for label. | |
579 | */ | |
d8b87afe | 580 | static unsigned int label_hash(const void *p) |
7758e3f3 | 581 | { |
d62a17ae | 582 | const zebra_ile_t *ile = p; |
7758e3f3 | 583 | |
d62a17ae | 584 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 585 | } |
586 | ||
587 | /* | |
588 | * Compare 2 LSP hash entries based on in-label. | |
589 | */ | |
74df8d6d | 590 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 591 | { |
d62a17ae | 592 | const zebra_ile_t *ile1 = p1; |
593 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 594 | |
d62a17ae | 595 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 596 | } |
597 | ||
40c7bdb0 | 598 | /* |
599 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
600 | * the passed flag. | |
601 | * NOTE: Looking only for connected routes right now. | |
602 | */ | |
d62a17ae | 603 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
604 | struct nexthop *nexthop) | |
40c7bdb0 | 605 | { |
d62a17ae | 606 | struct route_table *table; |
607 | struct prefix_ipv4 p; | |
608 | struct route_node *rn; | |
609 | struct route_entry *match; | |
610 | struct nexthop *match_nh; | |
40c7bdb0 | 611 | |
4a7371e9 | 612 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 613 | if (!table) |
614 | return 0; | |
40c7bdb0 | 615 | |
d62a17ae | 616 | /* Lookup nexthop in IPv4 routing table. */ |
617 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
618 | p.family = AF_INET; | |
619 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
620 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 621 | |
d62a17ae | 622 | rn = route_node_match(table, (struct prefix *)&p); |
623 | if (!rn) | |
624 | return 0; | |
40c7bdb0 | 625 | |
d62a17ae | 626 | route_unlock_node(rn); |
88d88a9c | 627 | |
d62a17ae | 628 | /* Locate a valid connected route. */ |
a2addae8 | 629 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 630 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
631 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
632 | continue; | |
633 | ||
7ee30f28 | 634 | for (match_nh = match->ng.nexthop; match_nh; |
d62a17ae | 635 | match_nh = match_nh->next) { |
636 | if (match->type == ZEBRA_ROUTE_CONNECT | |
637 | || nexthop->ifindex == match_nh->ifindex) { | |
638 | nexthop->ifindex = match_nh->ifindex; | |
639 | return 1; | |
640 | } | |
641 | } | |
88d88a9c | 642 | } |
40c7bdb0 | 643 | |
d62a17ae | 644 | return 0; |
40c7bdb0 | 645 | } |
646 | ||
647 | ||
648 | /* | |
649 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
650 | * the passed flag. | |
651 | * NOTE: Looking only for connected routes right now. | |
652 | */ | |
d62a17ae | 653 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
654 | struct nexthop *nexthop) | |
40c7bdb0 | 655 | { |
d62a17ae | 656 | struct route_table *table; |
657 | struct prefix_ipv6 p; | |
658 | struct route_node *rn; | |
659 | struct route_entry *match; | |
40c7bdb0 | 660 | |
4a7371e9 | 661 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 662 | if (!table) |
663 | return 0; | |
40c7bdb0 | 664 | |
d62a17ae | 665 | /* Lookup nexthop in IPv6 routing table. */ |
666 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
667 | p.family = AF_INET6; | |
668 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
669 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 670 | |
d62a17ae | 671 | rn = route_node_match(table, (struct prefix *)&p); |
672 | if (!rn) | |
673 | return 0; | |
40c7bdb0 | 674 | |
d62a17ae | 675 | route_unlock_node(rn); |
40c7bdb0 | 676 | |
d62a17ae | 677 | /* Locate a valid connected route. */ |
a2addae8 | 678 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 679 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
680 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
681 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
682 | break; | |
683 | } | |
40c7bdb0 | 684 | |
7ee30f28 | 685 | if (!match || !match->ng.nexthop) |
d62a17ae | 686 | return 0; |
40c7bdb0 | 687 | |
7ee30f28 | 688 | nexthop->ifindex = match->ng.nexthop->ifindex; |
d62a17ae | 689 | return 1; |
40c7bdb0 | 690 | } |
691 | ||
692 | ||
693 | /* | |
694 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
695 | * or not. | |
696 | * NOTE: Each NHLFE points to only 1 nexthop. | |
697 | */ | |
d62a17ae | 698 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
699 | { | |
700 | struct nexthop *nexthop; | |
701 | struct interface *ifp; | |
86f07f44 | 702 | struct zebra_ns *zns; |
d62a17ae | 703 | |
704 | nexthop = nhlfe->nexthop; | |
705 | if (!nexthop) // unexpected | |
706 | return 0; | |
707 | ||
708 | /* Check on nexthop based on type. */ | |
709 | switch (nexthop->type) { | |
b9abd9ad DS |
710 | case NEXTHOP_TYPE_IFINDEX: |
711 | /* | |
712 | * Lookup if this type is special. The | |
713 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
714 | * forward into a different table for | |
715 | * processing. As such this ifindex | |
716 | * passed to us may be a VRF device | |
717 | * which will not be in the default | |
718 | * VRF. So let's look in all of them | |
719 | */ | |
86f07f44 PG |
720 | zns = zebra_ns_lookup(NS_DEFAULT); |
721 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
722 | if (ifp && if_is_operative(ifp)) |
723 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
724 | else | |
725 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
726 | break; | |
d62a17ae | 727 | case NEXTHOP_TYPE_IPV4: |
728 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
729 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
730 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
731 | else | |
732 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
733 | break; | |
734 | ||
735 | case NEXTHOP_TYPE_IPV6: | |
736 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
737 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
738 | else | |
739 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
740 | break; | |
741 | ||
742 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
743 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
744 | ifp = if_lookup_by_index(nexthop->ifindex, |
745 | nexthop->vrf_id); | |
d62a17ae | 746 | if (ifp && if_is_operative(ifp)) |
747 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
748 | else | |
749 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
750 | } else { | |
751 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
752 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
753 | else | |
754 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
755 | } | |
756 | break; | |
757 | ||
758 | default: | |
759 | break; | |
760 | } | |
761 | ||
762 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 763 | } |
764 | ||
765 | /* | |
766 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
767 | * reachability and select the best. Multipath entries are also | |
768 | * marked. This is invoked when an LSP scheduled for processing (due | |
769 | * to some change) is examined. | |
770 | */ | |
d62a17ae | 771 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
772 | { | |
773 | zebra_nhlfe_t *nhlfe; | |
774 | zebra_nhlfe_t *best; | |
775 | struct nexthop *nexthop; | |
776 | int changed = 0; | |
777 | ||
778 | if (!lsp) | |
779 | return; | |
780 | ||
781 | best = NULL; | |
782 | lsp->num_ecmp = 0; | |
783 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
784 | ||
785 | /* | |
786 | * First compute the best path, after checking nexthop status. We are | |
787 | * only | |
788 | * concerned with non-deleted NHLFEs. | |
789 | */ | |
790 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
791 | /* Clear selection flags. */ | |
792 | UNSET_FLAG(nhlfe->flags, | |
793 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
794 | ||
795 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
796 | && nhlfe_nexthop_active(nhlfe)) { | |
797 | if (!best || (nhlfe->distance < best->distance)) | |
798 | best = nhlfe; | |
799 | } | |
800 | } | |
801 | ||
802 | lsp->best_nhlfe = best; | |
803 | if (!lsp->best_nhlfe) | |
804 | return; | |
805 | ||
806 | /* Mark best NHLFE as selected. */ | |
807 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
808 | ||
809 | /* | |
810 | * If best path exists, see if there is ECMP. While doing this, note if | |
811 | * a | |
812 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
813 | * still selected has a change or an installed entry is to be removed. | |
814 | */ | |
815 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
816 | int nh_chg, nh_sel, nh_inst; | |
817 | ||
818 | nexthop = nhlfe->nexthop; | |
819 | if (!nexthop) // unexpected | |
820 | continue; | |
821 | ||
822 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
823 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
824 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
825 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
826 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
827 | lsp->num_ecmp++; | |
828 | } | |
829 | ||
830 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
831 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
832 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
833 | nh_inst = | |
834 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
835 | ||
836 | if ((nh_sel && !nh_inst) | |
837 | || (nh_sel && nh_inst && nh_chg) | |
838 | || (nh_inst && !nh_sel)) | |
839 | changed = 1; | |
840 | } | |
841 | ||
842 | /* We have finished examining, clear changed flag. */ | |
843 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
844 | } | |
845 | ||
846 | if (changed) | |
847 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 848 | } |
849 | ||
850 | /* | |
851 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
852 | * process exit. | |
853 | */ | |
e3b78da8 | 854 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 855 | { |
d62a17ae | 856 | zebra_lsp_t *lsp; |
40c7bdb0 | 857 | |
e3b78da8 | 858 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 859 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 860 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 861 | } |
862 | ||
863 | /* | |
864 | * Schedule LSP forwarding entry for processing. Called upon changes | |
865 | * that may impact LSPs such as nexthop / connected route changes. | |
866 | */ | |
e3b78da8 | 867 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 868 | { |
d62a17ae | 869 | zebra_lsp_t *lsp; |
40c7bdb0 | 870 | |
e3b78da8 | 871 | lsp = (zebra_lsp_t *)bucket->data; |
0af35d90 | 872 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 873 | } |
874 | ||
875 | /* | |
876 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
877 | * any multipaths and update or delete from the kernel, as needed. | |
878 | */ | |
d62a17ae | 879 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
880 | { | |
881 | zebra_lsp_t *lsp; | |
882 | zebra_nhlfe_t *oldbest, *newbest; | |
883 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
884 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 885 | enum zebra_dplane_result res; |
d62a17ae | 886 | |
887 | lsp = (zebra_lsp_t *)data; | |
888 | if (!lsp) // unexpected | |
889 | return WQ_SUCCESS; | |
890 | ||
891 | oldbest = lsp->best_nhlfe; | |
892 | ||
893 | /* Select best NHLFE(s) */ | |
894 | lsp_select_best_nhlfe(lsp); | |
895 | ||
896 | newbest = lsp->best_nhlfe; | |
897 | ||
898 | if (IS_ZEBRA_DEBUG_MPLS) { | |
899 | if (oldbest) | |
900 | nhlfe2str(oldbest, buf, BUFSIZ); | |
901 | if (newbest) | |
902 | nhlfe2str(newbest, buf2, BUFSIZ); | |
903 | zlog_debug( | |
904 | "Process LSP in-label %u oldbest %s newbest %s " | |
905 | "flags 0x%x ecmp# %d", | |
906 | lsp->ile.in_label, oldbest ? buf : "NULL", | |
907 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
908 | } | |
909 | ||
910 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
911 | /* Not already installed */ | |
912 | if (newbest) { | |
2b63430c DS |
913 | |
914 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
915 | |
916 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 917 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
918 | /* Set 'installed' flag so we will know |
919 | * that an install is in-flight. | |
920 | */ | |
921 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
922 | ||
923 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 924 | break; |
ea1c14f6 | 925 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
926 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
927 | "LSP Install Failure: %u", | |
928 | lsp->ile.in_label); | |
7c5d0e18 | 929 | break; |
ea1c14f6 | 930 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
931 | zvrf->lsp_installs++; |
932 | break; | |
933 | } | |
d62a17ae | 934 | } |
935 | } else { | |
936 | /* Installed, may need an update and/or delete. */ | |
937 | if (!newbest) { | |
d37f4d6c MS |
938 | res = dplane_lsp_delete(lsp); |
939 | ||
940 | /* We do some of the lsp cleanup immediately for | |
941 | * deletes. | |
942 | */ | |
943 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
944 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 945 | |
d37f4d6c | 946 | switch (res) { |
ea1c14f6 | 947 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 948 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 949 | break; |
ea1c14f6 | 950 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
951 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
952 | "LSP Deletion Failure: %u", | |
953 | lsp->ile.in_label); | |
7c5d0e18 | 954 | break; |
ea1c14f6 | 955 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
956 | zvrf->lsp_removals++; |
957 | break; | |
958 | } | |
d62a17ae | 959 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
960 | zebra_nhlfe_t *nhlfe; |
961 | struct nexthop *nexthop; | |
2b63430c DS |
962 | |
963 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
964 | |
965 | /* We leave the INSTALLED flag set here | |
966 | * so we know an update in in-flight. | |
967 | */ | |
e6d44ec7 | 968 | |
9fa38ec6 DS |
969 | /* |
970 | * Any NHLFE that was installed but is not | |
971 | * selected now needs to have its flags updated. | |
972 | */ | |
996c9314 LB |
973 | for (nhlfe = lsp->nhlfe_list; nhlfe; |
974 | nhlfe = nhlfe->next) { | |
9fa38ec6 DS |
975 | nexthop = nhlfe->nexthop; |
976 | if (!nexthop) | |
977 | continue; | |
978 | ||
979 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
980 | NHLFE_FLAG_INSTALLED) |
981 | && !CHECK_FLAG(nhlfe->flags, | |
982 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
983 | UNSET_FLAG(nhlfe->flags, |
984 | NHLFE_FLAG_INSTALLED); | |
985 | UNSET_FLAG(nexthop->flags, | |
986 | NEXTHOP_FLAG_FIB); | |
987 | } | |
988 | } | |
989 | ||
d37f4d6c | 990 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 991 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 992 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 993 | break; |
ea1c14f6 | 994 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
995 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
996 | "LSP Update Failure: %u", | |
997 | lsp->ile.in_label); | |
7c5d0e18 | 998 | break; |
ea1c14f6 | 999 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1000 | zvrf->lsp_installs++; |
1001 | break; | |
1002 | } | |
d62a17ae | 1003 | } |
1004 | } | |
1005 | ||
1006 | return WQ_SUCCESS; | |
40c7bdb0 | 1007 | } |
1008 | ||
1009 | ||
1010 | /* | |
1011 | * Callback upon processing completion of a LSP forwarding entry. | |
1012 | */ | |
d62a17ae | 1013 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1014 | { |
d62a17ae | 1015 | struct zebra_vrf *zvrf; |
1016 | zebra_lsp_t *lsp; | |
1017 | struct hash *lsp_table; | |
1018 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
40c7bdb0 | 1019 | |
d62a17ae | 1020 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1021 | assert(zvrf); | |
40c7bdb0 | 1022 | |
d62a17ae | 1023 | lsp_table = zvrf->lsp_table; |
1024 | if (!lsp_table) // unexpected | |
1025 | return; | |
40c7bdb0 | 1026 | |
d62a17ae | 1027 | lsp = (zebra_lsp_t *)data; |
1028 | if (!lsp) // unexpected | |
1029 | return; | |
40c7bdb0 | 1030 | |
d62a17ae | 1031 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1032 | * exist, | |
1033 | * delete LSP entry also. | |
1034 | */ | |
1035 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1036 | |
d62a17ae | 1037 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { |
1038 | nhlfe_next = nhlfe->next; | |
1039 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1040 | nhlfe_del(nhlfe); | |
1041 | } | |
40c7bdb0 | 1042 | |
d62a17ae | 1043 | if (!lsp->nhlfe_list) { |
1044 | if (IS_ZEBRA_DEBUG_MPLS) | |
1045 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1046 | lsp->ile.in_label, lsp->flags); | |
40c7bdb0 | 1047 | |
d62a17ae | 1048 | lsp = hash_release(lsp_table, &lsp->ile); |
0a22ddfb | 1049 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 1050 | } |
40c7bdb0 | 1051 | } |
1052 | ||
1053 | /* | |
1054 | * Callback upon finishing the processing of all scheduled | |
1055 | * LSP forwarding entries. | |
1056 | */ | |
d62a17ae | 1057 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1058 | { |
d62a17ae | 1059 | /* Nothing to do for now. */ |
40c7bdb0 | 1060 | } |
1061 | ||
1062 | /* | |
1063 | * Add LSP forwarding entry to queue for subsequent processing. | |
1064 | */ | |
d62a17ae | 1065 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1066 | { |
d62a17ae | 1067 | /* If already scheduled, exit. */ |
1068 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1069 | return 0; | |
40c7bdb0 | 1070 | |
e2353ec2 | 1071 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1072 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1073 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1074 | return -1; |
1075 | } | |
33c32282 | 1076 | |
e2353ec2 | 1077 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1078 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1079 | return 0; | |
40c7bdb0 | 1080 | } |
1081 | ||
1082 | /* | |
1083 | * Callback to allocate LSP forwarding table entry. | |
1084 | */ | |
d62a17ae | 1085 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1086 | { |
d62a17ae | 1087 | const zebra_ile_t *ile = p; |
1088 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1089 | |
d62a17ae | 1090 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1091 | lsp->ile = *ile; | |
40c7bdb0 | 1092 | |
d62a17ae | 1093 | if (IS_ZEBRA_DEBUG_MPLS) |
1094 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1095 | |
d62a17ae | 1096 | return ((void *)lsp); |
40c7bdb0 | 1097 | } |
1098 | ||
1099 | /* | |
1100 | * Create printable string for NHLFE entry. | |
1101 | */ | |
d62a17ae | 1102 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1103 | { |
d62a17ae | 1104 | struct nexthop *nexthop; |
40c7bdb0 | 1105 | |
d62a17ae | 1106 | buf[0] = '\0'; |
1107 | nexthop = nhlfe->nexthop; | |
1108 | switch (nexthop->type) { | |
1109 | case NEXTHOP_TYPE_IPV4: | |
1110 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1111 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1112 | break; | |
1113 | case NEXTHOP_TYPE_IPV6: | |
1114 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); | |
1115 | break; | |
b9abd9ad DS |
1116 | case NEXTHOP_TYPE_IFINDEX: |
1117 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1118 | default: |
1119 | break; | |
1120 | } | |
40c7bdb0 | 1121 | |
d62a17ae | 1122 | return buf; |
40c7bdb0 | 1123 | } |
1124 | ||
1125 | /* | |
1126 | * Check if NHLFE matches with search info passed. | |
1127 | */ | |
d62a17ae | 1128 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
1129 | union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1130 | { |
d62a17ae | 1131 | struct nexthop *nhop; |
1132 | int cmp = 1; | |
40c7bdb0 | 1133 | |
d62a17ae | 1134 | nhop = nhlfe->nexthop; |
1135 | if (!nhop) | |
1136 | return 1; | |
40c7bdb0 | 1137 | |
d62a17ae | 1138 | if (nhop->type != gtype) |
1139 | return 1; | |
40c7bdb0 | 1140 | |
d62a17ae | 1141 | switch (nhop->type) { |
1142 | case NEXTHOP_TYPE_IPV4: | |
1143 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1144 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1145 | sizeof(struct in_addr)); | |
1146 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1147 | cmp = !(nhop->ifindex == ifindex); | |
1148 | break; | |
1149 | case NEXTHOP_TYPE_IPV6: | |
1150 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1151 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1152 | sizeof(struct in6_addr)); | |
1153 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1154 | cmp = !(nhop->ifindex == ifindex); | |
1155 | break; | |
b9abd9ad DS |
1156 | case NEXTHOP_TYPE_IFINDEX: |
1157 | cmp = !(nhop->ifindex == ifindex); | |
1158 | break; | |
d62a17ae | 1159 | default: |
1160 | break; | |
1161 | } | |
40c7bdb0 | 1162 | |
d62a17ae | 1163 | return cmp; |
40c7bdb0 | 1164 | } |
1165 | ||
1166 | ||
1167 | /* | |
1168 | * Locate NHLFE that matches with passed info. | |
1169 | */ | |
d62a17ae | 1170 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1171 | enum nexthop_types_t gtype, union g_addr *gate, | |
1172 | ifindex_t ifindex) | |
40c7bdb0 | 1173 | { |
d62a17ae | 1174 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1175 | |
d62a17ae | 1176 | if (!lsp) |
1177 | return NULL; | |
40c7bdb0 | 1178 | |
d62a17ae | 1179 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { |
1180 | if (nhlfe->type != lsp_type) | |
1181 | continue; | |
1182 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1183 | break; | |
1184 | } | |
40c7bdb0 | 1185 | |
d62a17ae | 1186 | return nhlfe; |
40c7bdb0 | 1187 | } |
1188 | ||
1189 | /* | |
1190 | * Add NHLFE. Base entry must have been created and duplicate | |
1191 | * check done. | |
1192 | */ | |
d62a17ae | 1193 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1194 | enum nexthop_types_t gtype, union g_addr *gate, | |
1195 | ifindex_t ifindex, mpls_label_t out_label) | |
1196 | { | |
1197 | zebra_nhlfe_t *nhlfe; | |
1198 | struct nexthop *nexthop; | |
1199 | ||
1200 | if (!lsp) | |
1201 | return NULL; | |
1202 | ||
1203 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1204 | |
1205 | nhlfe->lsp = lsp; | |
1206 | nhlfe->type = lsp_type; | |
1207 | nhlfe->distance = lsp_distance(lsp_type); | |
1208 | ||
1209 | nexthop = nexthop_new(); | |
1210 | if (!nexthop) { | |
1211 | XFREE(MTYPE_NHLFE, nhlfe); | |
1212 | return NULL; | |
1213 | } | |
1214 | nexthop_add_labels(nexthop, lsp_type, 1, &out_label); | |
1215 | ||
4a7371e9 | 1216 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1217 | nexthop->type = gtype; |
1218 | switch (nexthop->type) { | |
1219 | case NEXTHOP_TYPE_IPV4: | |
1220 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1221 | nexthop->gate.ipv4 = gate->ipv4; | |
1222 | if (ifindex) | |
1223 | nexthop->ifindex = ifindex; | |
1224 | break; | |
1225 | case NEXTHOP_TYPE_IPV6: | |
1226 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1227 | nexthop->gate.ipv6 = gate->ipv6; | |
1228 | if (ifindex) | |
1229 | nexthop->ifindex = ifindex; | |
1230 | break; | |
b9abd9ad DS |
1231 | case NEXTHOP_TYPE_IFINDEX: |
1232 | nexthop->ifindex = ifindex; | |
1233 | break; | |
d62a17ae | 1234 | default: |
1235 | nexthop_free(nexthop); | |
1236 | XFREE(MTYPE_NHLFE, nhlfe); | |
1237 | return NULL; | |
1238 | break; | |
1239 | } | |
1240 | ||
1241 | nhlfe->nexthop = nexthop; | |
1242 | if (lsp->nhlfe_list) | |
1243 | lsp->nhlfe_list->prev = nhlfe; | |
1244 | nhlfe->next = lsp->nhlfe_list; | |
1245 | lsp->nhlfe_list = nhlfe; | |
1246 | ||
1247 | return nhlfe; | |
40c7bdb0 | 1248 | } |
1249 | ||
1250 | /* | |
1251 | * Delete NHLFE. Entry must be present on list. | |
1252 | */ | |
d62a17ae | 1253 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1254 | { |
d62a17ae | 1255 | zebra_lsp_t *lsp; |
40c7bdb0 | 1256 | |
d62a17ae | 1257 | if (!nhlfe) |
1258 | return -1; | |
40c7bdb0 | 1259 | |
d62a17ae | 1260 | lsp = nhlfe->lsp; |
1261 | if (!lsp) | |
1262 | return -1; | |
40c7bdb0 | 1263 | |
d62a17ae | 1264 | /* Free nexthop. */ |
1265 | if (nhlfe->nexthop) | |
1266 | nexthop_free(nhlfe->nexthop); | |
40c7bdb0 | 1267 | |
d62a17ae | 1268 | /* Unlink from LSP */ |
1269 | if (nhlfe->next) | |
1270 | nhlfe->next->prev = nhlfe->prev; | |
1271 | if (nhlfe->prev) | |
1272 | nhlfe->prev->next = nhlfe->next; | |
1273 | else | |
1274 | lsp->nhlfe_list = nhlfe->next; | |
40c7bdb0 | 1275 | |
d62a17ae | 1276 | if (nhlfe == lsp->best_nhlfe) |
1277 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1278 | |
d62a17ae | 1279 | XFREE(MTYPE_NHLFE, nhlfe); |
40c7bdb0 | 1280 | |
d62a17ae | 1281 | return 0; |
40c7bdb0 | 1282 | } |
1283 | ||
a64448ba DS |
1284 | /* |
1285 | * Update label for NHLFE entry. | |
1286 | */ | |
d62a17ae | 1287 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1288 | struct mpls_label_stack *nh_label) |
d62a17ae | 1289 | { |
1290 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1291 | } | |
1292 | ||
1293 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1294 | enum lsp_types_t type) | |
1295 | { | |
1296 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
1297 | int schedule_lsp = 0; | |
1298 | char buf[BUFSIZ]; | |
1299 | ||
1300 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
1301 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
1302 | nhlfe_next = nhlfe->next; | |
1303 | ||
1304 | /* Skip non-static NHLFEs */ | |
1305 | if (nhlfe->type != type) | |
1306 | continue; | |
1307 | ||
1308 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1309 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1310 | zlog_debug( | |
1311 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1312 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1313 | } | |
1314 | ||
1315 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1316 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1317 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1318 | schedule_lsp = 1; | |
1319 | } else { | |
1320 | nhlfe_del(nhlfe); | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | /* Queue LSP for processing, if needed, else delete. */ | |
1325 | if (schedule_lsp) { | |
1326 | if (lsp_processq_add(lsp)) | |
1327 | return -1; | |
1328 | } else if (!lsp->nhlfe_list | |
1329 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
1330 | if (IS_ZEBRA_DEBUG_MPLS) | |
1331 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1332 | lsp->ile.in_label, lsp->flags); | |
1333 | ||
1334 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 1335 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 1336 | } |
1337 | ||
1338 | return 0; | |
40c7bdb0 | 1339 | } |
1340 | ||
ce549947 RW |
1341 | /* |
1342 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1343 | * If no other NHLFEs exist, the entry would be deleted. | |
1344 | */ | |
d62a17ae | 1345 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1346 | mpls_label_t in_label) | |
ce549947 | 1347 | { |
d62a17ae | 1348 | struct hash *lsp_table; |
1349 | zebra_ile_t tmp_ile; | |
1350 | zebra_lsp_t *lsp; | |
ce549947 | 1351 | |
d62a17ae | 1352 | /* Lookup table. */ |
1353 | lsp_table = zvrf->lsp_table; | |
1354 | if (!lsp_table) | |
1355 | return -1; | |
ce549947 | 1356 | |
d62a17ae | 1357 | /* If entry is not present, exit. */ |
1358 | tmp_ile.in_label = in_label; | |
1359 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1360 | if (!lsp || !lsp->nhlfe_list) | |
1361 | return 0; | |
ce549947 | 1362 | |
d62a17ae | 1363 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1364 | } |
1365 | ||
d62a17ae | 1366 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1367 | { |
d62a17ae | 1368 | char buf[BUFSIZ]; |
1369 | json_object *json_nhlfe = NULL; | |
1370 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1371 | |
d62a17ae | 1372 | json_nhlfe = json_object_new_object(); |
1373 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1374 | json_object_int_add(json_nhlfe, "outLabel", | |
1375 | nexthop->nh_label->label[0]); | |
1376 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1377 | |
d62a17ae | 1378 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1379 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1380 | |
d62a17ae | 1381 | switch (nexthop->type) { |
1382 | case NEXTHOP_TYPE_IPV4: | |
1383 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1384 | json_object_string_add(json_nhlfe, "nexthop", | |
1385 | inet_ntoa(nexthop->gate.ipv4)); | |
1386 | break; | |
1387 | case NEXTHOP_TYPE_IPV6: | |
1388 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1389 | json_object_string_add( | |
1390 | json_nhlfe, "nexthop", | |
1391 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1392 | ||
1393 | if (nexthop->ifindex) | |
4a7371e9 DS |
1394 | json_object_string_add(json_nhlfe, "interface", |
1395 | ifindex2ifname(nexthop->ifindex, | |
1396 | nexthop->vrf_id)); | |
d62a17ae | 1397 | break; |
1398 | default: | |
1399 | break; | |
1400 | } | |
1401 | return json_nhlfe; | |
b78b820d | 1402 | } |
1403 | ||
3ab18ff2 | 1404 | /* |
1405 | * Print the NHLFE for a LSP forwarding entry. | |
1406 | */ | |
d62a17ae | 1407 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1408 | { | |
1409 | struct nexthop *nexthop; | |
1410 | char buf[BUFSIZ]; | |
1411 | ||
1412 | nexthop = nhlfe->nexthop; | |
1413 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1414 | return; | |
1415 | ||
1416 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1417 | nhlfe_type2str(nhlfe->type), | |
1418 | label2str(nexthop->nh_label->label[0], buf, BUFSIZ), | |
1419 | nhlfe->distance); | |
1420 | switch (nexthop->type) { | |
1421 | case NEXTHOP_TYPE_IPV4: | |
1422 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1423 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1424 | if (nexthop->ifindex) | |
1425 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1426 | ifindex2ifname(nexthop->ifindex, |
1427 | nexthop->vrf_id)); | |
d62a17ae | 1428 | break; |
1429 | case NEXTHOP_TYPE_IPV6: | |
1430 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1431 | vty_out(vty, " via %s", | |
1432 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1433 | if (nexthop->ifindex) | |
1434 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1435 | ifindex2ifname(nexthop->ifindex, |
1436 | nexthop->vrf_id)); | |
d62a17ae | 1437 | break; |
1438 | default: | |
1439 | break; | |
1440 | } | |
996c9314 LB |
1441 | vty_out(vty, "%s", |
1442 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1443 | : ""); | |
d62a17ae | 1444 | vty_out(vty, "\n"); |
3ab18ff2 | 1445 | } |
1446 | ||
1447 | /* | |
1448 | * Print an LSP forwarding entry. | |
1449 | */ | |
d62a17ae | 1450 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt) |
3ab18ff2 | 1451 | { |
d62a17ae | 1452 | zebra_nhlfe_t *nhlfe; |
1453 | struct vty *vty; | |
3ab18ff2 | 1454 | |
d62a17ae | 1455 | vty = (struct vty *)ctxt; |
3ab18ff2 | 1456 | |
d62a17ae | 1457 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1458 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1459 | : ""); | |
3ab18ff2 | 1460 | |
d62a17ae | 1461 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1462 | nhlfe_print(nhlfe, vty); | |
3ab18ff2 | 1463 | } |
1464 | ||
1465 | /* | |
b78b820d | 1466 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1467 | */ |
d62a17ae | 1468 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1469 | { |
d62a17ae | 1470 | zebra_nhlfe_t *nhlfe = NULL; |
1471 | json_object *json = json_object_new_object(); | |
1472 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1473 | |
d62a17ae | 1474 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1475 | |
d62a17ae | 1476 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1477 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1478 | |
d62a17ae | 1479 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1480 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
b78b820d | 1481 | |
d62a17ae | 1482 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1483 | return json; | |
b78b820d | 1484 | } |
1485 | ||
1486 | ||
1487 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1488 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1489 | { |
d62a17ae | 1490 | unsigned int i; |
e3b78da8 | 1491 | struct hash_bucket *hb; |
d62a17ae | 1492 | struct list *sorted_list = list_new(); |
b78b820d | 1493 | |
d62a17ae | 1494 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1495 | |
d62a17ae | 1496 | for (i = 0; i < hash->size; i++) |
1497 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1498 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1499 | |
d62a17ae | 1500 | return sorted_list; |
3ab18ff2 | 1501 | } |
1502 | ||
7758e3f3 | 1503 | /* |
b78b820d | 1504 | * Compare two LSPs based on their label values. |
7758e3f3 | 1505 | */ |
d62a17ae | 1506 | static int lsp_cmp(zebra_lsp_t *lsp1, zebra_lsp_t *lsp2) |
7758e3f3 | 1507 | { |
d62a17ae | 1508 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1509 | return -1; | |
7758e3f3 | 1510 | |
d62a17ae | 1511 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1512 | return 1; | |
7758e3f3 | 1513 | |
d62a17ae | 1514 | return 0; |
7758e3f3 | 1515 | } |
1516 | ||
1517 | /* | |
1518 | * Callback to allocate static LSP. | |
1519 | */ | |
d62a17ae | 1520 | static void *slsp_alloc(void *p) |
7758e3f3 | 1521 | { |
d62a17ae | 1522 | const zebra_ile_t *ile = p; |
1523 | zebra_slsp_t *slsp; | |
7758e3f3 | 1524 | |
d62a17ae | 1525 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1526 | slsp->ile = *ile; | |
1527 | return ((void *)slsp); | |
7758e3f3 | 1528 | } |
1529 | ||
b78b820d | 1530 | /* |
1531 | * Compare two static LSPs based on their label values. | |
1532 | */ | |
d62a17ae | 1533 | static int slsp_cmp(zebra_slsp_t *slsp1, zebra_slsp_t *slsp2) |
b78b820d | 1534 | { |
d62a17ae | 1535 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1536 | return -1; | |
b78b820d | 1537 | |
d62a17ae | 1538 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1539 | return 1; | |
b78b820d | 1540 | |
d62a17ae | 1541 | return 0; |
b78b820d | 1542 | } |
1543 | ||
7758e3f3 | 1544 | /* |
1545 | * Check if static NHLFE matches with search info passed. | |
1546 | */ | |
d62a17ae | 1547 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
1548 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1549 | { |
d62a17ae | 1550 | int cmp = 1; |
7758e3f3 | 1551 | |
d62a17ae | 1552 | if (snhlfe->gtype != gtype) |
1553 | return 1; | |
7758e3f3 | 1554 | |
d62a17ae | 1555 | switch (snhlfe->gtype) { |
1556 | case NEXTHOP_TYPE_IPV4: | |
1557 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1558 | sizeof(struct in_addr)); | |
1559 | break; | |
1560 | case NEXTHOP_TYPE_IPV6: | |
1561 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1562 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1563 | sizeof(struct in6_addr)); | |
1564 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1565 | cmp = !(snhlfe->ifindex == ifindex); | |
1566 | break; | |
1567 | default: | |
1568 | break; | |
1569 | } | |
7758e3f3 | 1570 | |
d62a17ae | 1571 | return cmp; |
7758e3f3 | 1572 | } |
1573 | ||
1574 | /* | |
1575 | * Locate static NHLFE that matches with passed info. | |
1576 | */ | |
d62a17ae | 1577 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1578 | enum nexthop_types_t gtype, | |
1579 | union g_addr *gate, ifindex_t ifindex) | |
7758e3f3 | 1580 | { |
d62a17ae | 1581 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1582 | |
d62a17ae | 1583 | if (!slsp) |
1584 | return NULL; | |
7758e3f3 | 1585 | |
d62a17ae | 1586 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe->next) { |
1587 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) | |
1588 | break; | |
1589 | } | |
7758e3f3 | 1590 | |
d62a17ae | 1591 | return snhlfe; |
7758e3f3 | 1592 | } |
1593 | ||
1594 | ||
1595 | /* | |
1596 | * Add static NHLFE. Base LSP config entry must have been created | |
1597 | * and duplicate check done. | |
1598 | */ | |
d62a17ae | 1599 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1600 | enum nexthop_types_t gtype, | |
1601 | union g_addr *gate, ifindex_t ifindex, | |
1602 | mpls_label_t out_label) | |
1603 | { | |
1604 | zebra_snhlfe_t *snhlfe; | |
1605 | ||
1606 | if (!slsp) | |
1607 | return NULL; | |
1608 | ||
1609 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1610 | snhlfe->slsp = slsp; | |
1611 | snhlfe->out_label = out_label; | |
1612 | snhlfe->gtype = gtype; | |
1613 | switch (gtype) { | |
1614 | case NEXTHOP_TYPE_IPV4: | |
1615 | snhlfe->gate.ipv4 = gate->ipv4; | |
1616 | break; | |
1617 | case NEXTHOP_TYPE_IPV6: | |
1618 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1619 | snhlfe->gate.ipv6 = gate->ipv6; | |
1620 | if (ifindex) | |
1621 | snhlfe->ifindex = ifindex; | |
1622 | break; | |
1623 | default: | |
1624 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1625 | return NULL; | |
1626 | } | |
1627 | ||
1628 | if (slsp->snhlfe_list) | |
1629 | slsp->snhlfe_list->prev = snhlfe; | |
1630 | snhlfe->next = slsp->snhlfe_list; | |
1631 | slsp->snhlfe_list = snhlfe; | |
1632 | ||
1633 | return snhlfe; | |
7758e3f3 | 1634 | } |
1635 | ||
1636 | /* | |
1637 | * Delete static NHLFE. Entry must be present on list. | |
1638 | */ | |
d62a17ae | 1639 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1640 | { |
d62a17ae | 1641 | zebra_slsp_t *slsp; |
7758e3f3 | 1642 | |
d62a17ae | 1643 | if (!snhlfe) |
1644 | return -1; | |
7758e3f3 | 1645 | |
d62a17ae | 1646 | slsp = snhlfe->slsp; |
1647 | if (!slsp) | |
1648 | return -1; | |
7758e3f3 | 1649 | |
d62a17ae | 1650 | if (snhlfe->next) |
1651 | snhlfe->next->prev = snhlfe->prev; | |
1652 | if (snhlfe->prev) | |
1653 | snhlfe->prev->next = snhlfe->next; | |
1654 | else | |
1655 | slsp->snhlfe_list = snhlfe->next; | |
7758e3f3 | 1656 | |
d62a17ae | 1657 | snhlfe->prev = snhlfe->next = NULL; |
0a22ddfb | 1658 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); |
d62a17ae | 1659 | XFREE(MTYPE_SNHLFE, snhlfe); |
7758e3f3 | 1660 | |
d62a17ae | 1661 | return 0; |
7758e3f3 | 1662 | } |
1663 | ||
1664 | /* | |
1665 | * Delete all static NHLFE entries for this LSP (in label). | |
1666 | */ | |
d62a17ae | 1667 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1668 | { |
d62a17ae | 1669 | zebra_snhlfe_t *snhlfe, *snhlfe_next; |
7758e3f3 | 1670 | |
d62a17ae | 1671 | if (!slsp) |
1672 | return -1; | |
7758e3f3 | 1673 | |
d62a17ae | 1674 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe_next) { |
1675 | snhlfe_next = snhlfe->next; | |
1676 | snhlfe_del(snhlfe); | |
1677 | } | |
7758e3f3 | 1678 | |
d62a17ae | 1679 | return 0; |
7758e3f3 | 1680 | } |
1681 | ||
1682 | /* | |
1683 | * Create printable string for NHLFE configuration. | |
1684 | */ | |
d62a17ae | 1685 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1686 | { |
d62a17ae | 1687 | buf[0] = '\0'; |
1688 | switch (snhlfe->gtype) { | |
1689 | case NEXTHOP_TYPE_IPV4: | |
1690 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1691 | break; | |
1692 | case NEXTHOP_TYPE_IPV6: | |
1693 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1694 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1695 | if (snhlfe->ifindex) | |
eab4a5c2 QY |
1696 | strlcat(buf, |
1697 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT), | |
1698 | size); | |
d62a17ae | 1699 | break; |
1700 | default: | |
1701 | break; | |
1702 | } | |
7758e3f3 | 1703 | |
d62a17ae | 1704 | return buf; |
7758e3f3 | 1705 | } |
1706 | ||
40c7bdb0 | 1707 | /* |
1708 | * Initialize work queue for processing changed LSPs. | |
1709 | */ | |
2561d12e | 1710 | static int mpls_processq_init(void) |
40c7bdb0 | 1711 | { |
e2353ec2 DS |
1712 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1713 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1714 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1715 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1716 | return -1; |
1717 | } | |
40c7bdb0 | 1718 | |
e2353ec2 DS |
1719 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1720 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1721 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1722 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1723 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1724 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1725 | |
d62a17ae | 1726 | return 0; |
40c7bdb0 | 1727 | } |
1728 | ||
7758e3f3 | 1729 | |
7758e3f3 | 1730 | /* Public functions */ |
1731 | ||
d37f4d6c MS |
1732 | /* |
1733 | * Process LSP update results from zebra dataplane. | |
1734 | */ | |
1735 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1736 | { | |
1737 | struct zebra_vrf *zvrf; | |
1738 | zebra_ile_t tmp_ile; | |
1739 | struct hash *lsp_table; | |
1740 | zebra_lsp_t *lsp; | |
1741 | zebra_nhlfe_t *nhlfe; | |
1742 | struct nexthop *nexthop; | |
1743 | enum dplane_op_e op; | |
8841f96e | 1744 | enum zebra_dplane_result status; |
d37f4d6c MS |
1745 | |
1746 | op = dplane_ctx_get_op(ctx); | |
1747 | status = dplane_ctx_get_status(ctx); | |
1748 | ||
1749 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1750 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1751 | ctx, dplane_op2str(op), | |
1752 | dplane_ctx_get_in_label(ctx), | |
1753 | dplane_res2str(status)); | |
1754 | ||
1755 | switch (op) { | |
1756 | case DPLANE_OP_LSP_INSTALL: | |
1757 | case DPLANE_OP_LSP_UPDATE: | |
1758 | /* Look for zebra LSP object */ | |
1759 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1760 | if (zvrf == NULL) | |
1761 | break; | |
1762 | ||
1763 | lsp_table = zvrf->lsp_table; | |
1764 | ||
1765 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1766 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1767 | if (lsp == NULL) { | |
1768 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1769 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1770 | ctx, dplane_ctx_get_in_label(ctx)); | |
1771 | break; | |
1772 | } | |
1773 | ||
1774 | /* TODO -- Confirm that this result is still 'current' */ | |
1775 | ||
8841f96e | 1776 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1777 | /* Update zebra object */ |
1778 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1779 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
1780 | nhlfe = nhlfe->next) { | |
1781 | nexthop = nhlfe->nexthop; | |
1782 | if (!nexthop) | |
1783 | continue; | |
1784 | ||
1785 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1786 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1787 | } | |
1788 | } else { | |
1789 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1790 | clear_nhlfe_installed(lsp); | |
1791 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1792 | "LSP Install Failure: in-label %u", | |
1793 | lsp->ile.in_label); | |
1794 | } | |
1795 | ||
1796 | break; | |
1797 | ||
1798 | case DPLANE_OP_LSP_DELETE: | |
3fd385c6 DS |
1799 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) |
1800 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, | |
1801 | "LSP Deletion Failure: in-label %u", | |
1802 | dplane_ctx_get_in_label(ctx)); | |
d37f4d6c MS |
1803 | break; |
1804 | ||
1805 | default: | |
1806 | break; | |
1807 | ||
1808 | } /* Switch */ | |
1809 | ||
1810 | dplane_ctx_fini(&ctx); | |
1811 | } | |
1812 | ||
104e3ad9 MS |
1813 | /* |
1814 | * Process async dplane notifications. | |
1815 | */ | |
1816 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
1817 | { | |
1818 | struct zebra_vrf *zvrf; | |
1819 | zebra_ile_t tmp_ile; | |
1820 | struct hash *lsp_table; | |
1821 | zebra_lsp_t *lsp; | |
1822 | zebra_nhlfe_t *nhlfe; | |
1823 | const zebra_nhlfe_t *ctx_nhlfe; | |
1824 | struct nexthop *nexthop; | |
1825 | const struct nexthop *ctx_nexthop; | |
1826 | int start_count = 0, end_count = 0; /* Installed counts */ | |
188a00e0 | 1827 | bool changed_p = false; |
104e3ad9 MS |
1828 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1829 | ||
1830 | if (is_debug) | |
1831 | zlog_debug("LSP dplane notif, in-label %u", | |
1832 | dplane_ctx_get_in_label(ctx)); | |
1833 | ||
1834 | /* Look for zebra LSP object */ | |
1835 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1836 | if (zvrf == NULL) | |
1837 | goto done; | |
1838 | ||
1839 | lsp_table = zvrf->lsp_table; | |
1840 | ||
1841 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1842 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1843 | if (lsp == NULL) { | |
1844 | if (is_debug) | |
1845 | zlog_debug("dplane LSP notif: in-label %u not found", | |
1846 | dplane_ctx_get_in_label(ctx)); | |
1847 | goto done; | |
1848 | } | |
1849 | ||
1850 | /* | |
1851 | * The dataplane/forwarding plane is notifying zebra about the state | |
188a00e0 MS |
1852 | * of the nexthops associated with this LSP. First, we take a |
1853 | * pre-scan pass to determine whether the LSP has transitioned | |
1854 | * from installed -> uninstalled. In that case, we need to have | |
1855 | * the existing state of the LSP objects available before making | |
1856 | * any changes. | |
104e3ad9 MS |
1857 | */ |
1858 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1859 | char buf[NEXTHOP_STRLEN]; | |
1860 | ||
1861 | nexthop = nhlfe->nexthop; | |
1862 | if (!nexthop) | |
1863 | continue; | |
1864 | ||
1865 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1866 | start_count++; | |
1867 | ||
1868 | ctx_nexthop = NULL; | |
1869 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1870 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1871 | ||
1872 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1873 | if (!ctx_nexthop) | |
1874 | continue; | |
1875 | ||
1876 | if ((ctx_nexthop->type == nexthop->type) && | |
1877 | nexthop_same(ctx_nexthop, nexthop)) { | |
1878 | /* Matched */ | |
1879 | break; | |
1880 | } | |
1881 | } | |
1882 | ||
1883 | if (is_debug) | |
1884 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1885 | ||
1886 | if (ctx_nhlfe && ctx_nexthop) { | |
1887 | if (is_debug) { | |
1888 | const char *tstr = ""; | |
1889 | ||
1890 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1891 | NHLFE_FLAG_INSTALLED)) | |
1892 | tstr = "not "; | |
1893 | ||
1894 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1895 | buf, tstr); | |
1896 | } | |
1897 | ||
188a00e0 | 1898 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1899 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1900 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1901 | |
1902 | if (!CHECK_FLAG(nhlfe->flags, | |
1903 | NHLFE_FLAG_INSTALLED)) | |
1904 | changed_p = true; | |
104e3ad9 MS |
1905 | |
1906 | /* Update counter */ | |
1907 | end_count++; | |
188a00e0 MS |
1908 | } else { |
1909 | ||
1910 | if (CHECK_FLAG(nhlfe->flags, | |
1911 | NHLFE_FLAG_INSTALLED)) | |
1912 | changed_p = true; | |
1913 | } | |
1914 | ||
1915 | } else { | |
1916 | /* Not mentioned in lfib set -> uninstalled */ | |
1917 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1918 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1919 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1920 | changed_p = true; | |
1921 | } | |
1922 | ||
1923 | if (is_debug) | |
1924 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1925 | buf); | |
1926 | } | |
1927 | } | |
1928 | ||
1929 | if (is_debug) | |
1930 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
1931 | start_count, end_count, | |
1932 | changed_p ? ", changed" : ""); | |
1933 | ||
1934 | /* | |
1935 | * Has the LSP become uninstalled? | |
1936 | */ | |
1937 | if (start_count > 0 && end_count == 0) { | |
1938 | /* Inform other lfibs */ | |
1939 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
1940 | } | |
1941 | ||
1942 | /* | |
1943 | * Now we take a second pass and bring the zebra | |
1944 | * nexthop state into sync with the forwarding-plane state. | |
1945 | */ | |
1946 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1947 | char buf[NEXTHOP_STRLEN]; | |
1948 | ||
1949 | nexthop = nhlfe->nexthop; | |
1950 | if (!nexthop) | |
1951 | continue; | |
1952 | ||
1953 | ctx_nexthop = NULL; | |
1954 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1955 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1956 | ||
1957 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1958 | if (!ctx_nexthop) | |
1959 | continue; | |
1960 | ||
1961 | if ((ctx_nexthop->type == nexthop->type) && | |
1962 | nexthop_same(ctx_nexthop, nexthop)) { | |
1963 | /* Matched */ | |
1964 | break; | |
1965 | } | |
1966 | } | |
1967 | ||
1968 | if (is_debug) | |
1969 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1970 | ||
1971 | if (ctx_nhlfe && ctx_nexthop) { | |
1972 | ||
1973 | /* Bring zebra nhlfe install state into sync */ | |
1974 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1975 | NHLFE_FLAG_INSTALLED)) { | |
1976 | ||
1977 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1978 | ||
1979 | } else { | |
1980 | ||
104e3ad9 | 1981 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
188a00e0 | 1982 | } |
104e3ad9 MS |
1983 | |
1984 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
1985 | NEXTHOP_FLAG_FIB)) { |
1986 | SET_FLAG(nhlfe->nexthop->flags, | |
1987 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1988 | SET_FLAG(nhlfe->nexthop->flags, |
1989 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1990 | } else { |
1991 | UNSET_FLAG(nhlfe->nexthop->flags, | |
1992 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
1993 | UNSET_FLAG(nhlfe->nexthop->flags, |
1994 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
1995 | } |
1996 | ||
104e3ad9 MS |
1997 | } else { |
1998 | /* Not mentioned in lfib set -> uninstalled */ | |
188a00e0 | 1999 | |
104e3ad9 MS |
2000 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
2001 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
188a00e0 | 2002 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2003 | } |
2004 | } | |
2005 | ||
188a00e0 | 2006 | if (end_count > 0) { |
104e3ad9 | 2007 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2008 | |
2009 | if (changed_p) | |
2010 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2011 | ||
2012 | } else { | |
104e3ad9 MS |
2013 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2014 | clear_nhlfe_installed(lsp); | |
2015 | } | |
2016 | ||
2017 | done: | |
2018 | dplane_ctx_fini(&ctx); | |
2019 | } | |
2020 | ||
a64448ba DS |
2021 | /* |
2022 | * Install dynamic LSP entry. | |
2023 | */ | |
d62a17ae | 2024 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2025 | struct route_entry *re) | |
a64448ba | 2026 | { |
d62a17ae | 2027 | struct route_table *table; |
2028 | zebra_fec_t *fec; | |
a64448ba | 2029 | |
d62a17ae | 2030 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2031 | if (!table) | |
2032 | return -1; | |
a64448ba | 2033 | |
d62a17ae | 2034 | /* See if there is a configured label binding for this FEC. */ |
2035 | fec = fec_find(table, &rn->p); | |
2036 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2037 | return 0; | |
a64448ba | 2038 | |
d62a17ae | 2039 | /* We cannot install a label forwarding entry if local label is the |
2040 | * implicit-null label. | |
2041 | */ | |
70e98a7f | 2042 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2043 | return 0; |
a64448ba | 2044 | |
d62a17ae | 2045 | if (lsp_install(zvrf, fec->label, rn, re)) |
2046 | return -1; | |
a64448ba | 2047 | |
d62a17ae | 2048 | return 0; |
a64448ba DS |
2049 | } |
2050 | ||
2051 | /* | |
2052 | * Uninstall dynamic LSP entry, if any. | |
2053 | */ | |
d62a17ae | 2054 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2055 | struct route_entry *re) | |
a64448ba | 2056 | { |
d62a17ae | 2057 | struct route_table *table; |
2058 | zebra_fec_t *fec; | |
a64448ba | 2059 | |
d62a17ae | 2060 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2061 | if (!table) | |
2062 | return -1; | |
a64448ba | 2063 | |
d62a17ae | 2064 | /* See if there is a configured label binding for this FEC. */ |
2065 | fec = fec_find(table, &rn->p); | |
2066 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2067 | return 0; | |
a64448ba | 2068 | |
d62a17ae | 2069 | /* Uninstall always removes all dynamic NHLFEs. */ |
2070 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2071 | } |
2072 | ||
d4cb23d7 MS |
2073 | /* |
2074 | * Add an NHLFE to an LSP, return the newly-added object | |
2075 | */ | |
2076 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2077 | enum lsp_types_t lsp_type, | |
2078 | enum nexthop_types_t gtype, | |
2079 | union g_addr *gate, | |
2080 | ifindex_t ifindex, | |
2081 | mpls_label_t out_label) | |
2082 | { | |
2083 | /* Just a public pass-through to the internal implementation */ | |
2084 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, out_label); | |
2085 | } | |
2086 | ||
2087 | /* | |
2088 | * Free an allocated NHLFE | |
2089 | */ | |
2090 | void zebra_mpls_nhlfe_del(zebra_nhlfe_t *nhlfe) | |
2091 | { | |
2092 | /* Just a pass-through to the internal implementation */ | |
2093 | nhlfe_del(nhlfe); | |
2094 | } | |
2095 | ||
5aba114a DS |
2096 | /* |
2097 | * Registration from a client for the label binding for a FEC. If a binding | |
2098 | * already exists, it is informed to the client. | |
28d58fd7 | 2099 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2100 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2101 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2102 | * is acceptable. If no label index then just register the specified label. |
2103 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2104 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2105 | */ |
d62a17ae | 2106 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2107 | uint32_t label, uint32_t label_index, |
2108 | struct zserv *client) | |
d62a17ae | 2109 | { |
2110 | struct route_table *table; | |
2111 | zebra_fec_t *fec; | |
2112 | char buf[BUFSIZ]; | |
57592a53 AD |
2113 | bool new_client; |
2114 | bool label_change = false; | |
d7c0a89a | 2115 | uint32_t old_label; |
57592a53 AD |
2116 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2117 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2118 | |
2119 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2120 | if (!table) | |
2121 | return -1; | |
2122 | ||
2123 | if (IS_ZEBRA_DEBUG_MPLS) | |
2124 | prefix2str(p, buf, BUFSIZ); | |
2125 | ||
57592a53 AD |
2126 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2127 | flog_err( | |
2128 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2129 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2130 | buf, label, label_index, | |
2131 | zebra_route_string(client->proto)); | |
2132 | return -1; | |
2133 | } | |
2134 | ||
d62a17ae | 2135 | /* Locate FEC */ |
2136 | fec = fec_find(table, p); | |
2137 | if (!fec) { | |
57592a53 | 2138 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2139 | if (!fec) { |
af4c2728 | 2140 | flog_err( |
e914ccbe | 2141 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2142 | "Failed to add FEC %s upon register, client %s", |
2143 | buf, zebra_route_string(client->proto)); | |
2144 | return -1; | |
2145 | } | |
2146 | ||
2147 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2148 | new_client = true; |
d62a17ae | 2149 | } else { |
57592a53 AD |
2150 | /* Check if the FEC has been statically defined in the config */ |
2151 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2152 | /* Client may register same FEC with different label index. */ |
2153 | new_client = | |
2154 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2155 | if (!new_client && fec->label_index == label_index |
2156 | && fec->label == label) | |
d62a17ae | 2157 | /* Duplicate register */ |
2158 | return 0; | |
2159 | ||
57592a53 | 2160 | /* Save current label, update the FEC */ |
d62a17ae | 2161 | old_label = fec->label; |
2162 | fec->label_index = label_index; | |
2163 | } | |
2164 | ||
2165 | if (new_client) | |
2166 | listnode_add(fec->client_list, client); | |
2167 | ||
2168 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2169 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2170 | have_label_index ? " index" : "", | |
2171 | have_label_index ? label_index : label, | |
2172 | new_client ? "registered" : "updated", | |
2173 | zebra_route_string(client->proto), | |
2174 | is_configured_fec | |
2175 | ? ", but using statically configured label" | |
2176 | : ""); | |
2177 | ||
2178 | /* If not a statically configured FEC, derive the local label | |
2179 | * from label index or use the provided label | |
d62a17ae | 2180 | */ |
57592a53 AD |
2181 | if (!is_configured_fec) { |
2182 | if (have_label_index) | |
2183 | fec_derive_label_from_index(zvrf, fec); | |
2184 | else | |
2185 | fec->label = label; | |
d62a17ae | 2186 | |
2187 | /* If no label change, exit. */ | |
2188 | if (fec->label == old_label) | |
2189 | return 0; | |
2190 | ||
57592a53 | 2191 | label_change = true; |
d62a17ae | 2192 | } |
2193 | ||
2194 | /* If new client or label change, update client and install or uninstall | |
2195 | * label forwarding entry as needed. | |
2196 | */ | |
2197 | /* Inform client of label, if needed. */ | |
2198 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2199 | if (IS_ZEBRA_DEBUG_MPLS) | |
2200 | zlog_debug("Update client label %u", fec->label); | |
2201 | fec_send(fec, client); | |
2202 | } | |
2203 | ||
2204 | if (new_client || label_change) | |
2205 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2206 | ||
2207 | return 0; | |
5aba114a DS |
2208 | } |
2209 | ||
2210 | /* | |
2211 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2212 | * itself is deleted if no other registered clients exist and there is no | |
2213 | * label bound to the FEC. | |
2214 | */ | |
d62a17ae | 2215 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2216 | struct zserv *client) | |
5aba114a | 2217 | { |
d62a17ae | 2218 | struct route_table *table; |
2219 | zebra_fec_t *fec; | |
2220 | char buf[BUFSIZ]; | |
5aba114a | 2221 | |
d62a17ae | 2222 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2223 | if (!table) | |
2224 | return -1; | |
5aba114a | 2225 | |
d62a17ae | 2226 | if (IS_ZEBRA_DEBUG_MPLS) |
2227 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2228 | |
d62a17ae | 2229 | fec = fec_find(table, p); |
2230 | if (!fec) { | |
2231 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2232 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
2233 | "Failed to find FEC %s upon unregister, client %s", |
2234 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 2235 | return -1; |
2236 | } | |
5aba114a | 2237 | |
d62a17ae | 2238 | listnode_delete(fec->client_list, client); |
2239 | ||
2240 | if (IS_ZEBRA_DEBUG_MPLS) | |
2241 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2242 | zebra_route_string(client->proto)); | |
2243 | ||
2244 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2245 | * deleting, see if any LSP needs to be uninstalled. | |
2246 | */ | |
2247 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2248 | && list_isempty(fec->client_list)) { | |
2249 | mpls_label_t old_label = fec->label; | |
2250 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2251 | fec_change_update_lsp(zvrf, fec, old_label); | |
2252 | fec_del(fec); | |
2253 | } | |
5aba114a | 2254 | |
d62a17ae | 2255 | return 0; |
5aba114a DS |
2256 | } |
2257 | ||
2258 | /* | |
2259 | * Cleanup any FECs registered by this client. | |
2260 | */ | |
453844ab | 2261 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2262 | { |
453844ab | 2263 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2264 | struct route_node *rn; |
2265 | zebra_fec_t *fec; | |
2266 | struct listnode *node; | |
2267 | struct zserv *fec_client; | |
2268 | int af; | |
2269 | ||
2270 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2271 | if (zvrf->fec_table[af] == NULL) | |
2272 | continue; | |
2273 | ||
2274 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2275 | rn = route_next(rn)) { | |
2276 | fec = rn->info; | |
2277 | if (!fec || list_isempty(fec->client_list)) | |
2278 | continue; | |
2279 | ||
2280 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2281 | fec_client)) { | |
2282 | if (fec_client == client) { | |
2283 | listnode_delete(fec->client_list, | |
2284 | fec_client); | |
2285 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2286 | && list_isempty(fec->client_list)) | |
2287 | fec_del(fec); | |
2288 | break; | |
2289 | } | |
2290 | } | |
2291 | } | |
2292 | } | |
5aba114a | 2293 | |
d62a17ae | 2294 | return 0; |
5aba114a DS |
2295 | } |
2296 | ||
f31e084c DS |
2297 | /* |
2298 | * Return FEC (if any) to which this label is bound. | |
2299 | * Note: Only works for per-prefix binding and when the label is not | |
2300 | * implicit-null. | |
2301 | * TODO: Currently walks entire table, can optimize later with another | |
2302 | * hash.. | |
2303 | */ | |
d62a17ae | 2304 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2305 | mpls_label_t label) | |
2306 | { | |
2307 | struct route_node *rn; | |
2308 | zebra_fec_t *fec; | |
2309 | int af; | |
2310 | ||
2311 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2312 | if (zvrf->fec_table[af] == NULL) | |
2313 | continue; | |
2314 | ||
2315 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2316 | rn = route_next(rn)) { | |
2317 | if (!rn->info) | |
2318 | continue; | |
2319 | fec = rn->info; | |
2320 | if (fec->label == label) | |
2321 | return fec; | |
2322 | } | |
2323 | } | |
f31e084c | 2324 | |
d62a17ae | 2325 | return NULL; |
f31e084c DS |
2326 | } |
2327 | ||
2328 | /* | |
2329 | * Inform if specified label is currently bound to a FEC or not. | |
2330 | */ | |
d62a17ae | 2331 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2332 | { |
d62a17ae | 2333 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2334 | } |
2335 | ||
2336 | /* | |
5aba114a | 2337 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2338 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2339 | * label forwarding entry. | |
9d303b37 | 2340 | */ |
d62a17ae | 2341 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2342 | mpls_label_t in_label) | |
2343 | { | |
2344 | struct route_table *table; | |
2345 | zebra_fec_t *fec; | |
2346 | char buf[BUFSIZ]; | |
2347 | mpls_label_t old_label; | |
2348 | int ret = 0; | |
2349 | ||
2350 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2351 | if (!table) | |
2352 | return -1; | |
2353 | ||
2354 | if (IS_ZEBRA_DEBUG_MPLS) | |
2355 | prefix2str(p, buf, BUFSIZ); | |
2356 | ||
2357 | /* Update existing FEC or create a new one. */ | |
2358 | fec = fec_find(table, p); | |
2359 | if (!fec) { | |
2360 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2361 | MPLS_INVALID_LABEL_INDEX); | |
2362 | if (!fec) { | |
2363 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2364 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2365 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2366 | return -1; |
2367 | } | |
2368 | ||
2369 | if (IS_ZEBRA_DEBUG_MPLS) | |
2370 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2371 | } else { | |
2372 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2373 | if (fec->label == in_label) | |
2374 | /* Duplicate config */ | |
2375 | return 0; | |
2376 | ||
2377 | /* Label change, update clients. */ | |
2378 | old_label = fec->label; | |
2379 | if (IS_ZEBRA_DEBUG_MPLS) | |
2380 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2381 | ||
2382 | fec->label = in_label; | |
2383 | fec_update_clients(fec); | |
2384 | ||
2385 | /* Update label forwarding entries appropriately */ | |
2386 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2387 | } | |
2388 | ||
2389 | return ret; | |
f31e084c DS |
2390 | } |
2391 | ||
2392 | /* | |
5aba114a DS |
2393 | * Remove static FEC to label binding. If there are no clients registered |
2394 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2395 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2396 | * client may need to be updated with derived label. | |
f31e084c | 2397 | */ |
d62a17ae | 2398 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2399 | { | |
2400 | struct route_table *table; | |
2401 | zebra_fec_t *fec; | |
2402 | mpls_label_t old_label; | |
2403 | char buf[BUFSIZ]; | |
2404 | ||
2405 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2406 | if (!table) | |
2407 | return -1; | |
2408 | ||
2409 | fec = fec_find(table, p); | |
2410 | if (!fec) { | |
2411 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2412 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2413 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2414 | return -1; |
2415 | } | |
2416 | ||
2417 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2418 | prefix2str(p, buf, BUFSIZ); | |
57592a53 AD |
2419 | zlog_debug("Delete fec %s label %u label index %u", buf, |
2420 | fec->label, fec->label_index); | |
d62a17ae | 2421 | } |
2422 | ||
2423 | old_label = fec->label; | |
2424 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2425 | fec->label = MPLS_INVALID_LABEL; | |
2426 | ||
2427 | /* If no client exists, just delete the FEC. */ | |
2428 | if (list_isempty(fec->client_list)) { | |
2429 | fec_del(fec); | |
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | /* Derive the local label (from label index) or reset it. */ | |
2434 | fec_derive_label_from_index(zvrf, fec); | |
2435 | ||
2436 | /* If there is a label change, update clients. */ | |
2437 | if (fec->label == old_label) | |
2438 | return 0; | |
2439 | fec_update_clients(fec); | |
2440 | ||
2441 | /* Update label forwarding entries appropriately */ | |
2442 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2443 | } |
2444 | ||
2445 | /* | |
2446 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2447 | */ | |
d62a17ae | 2448 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2449 | { |
d62a17ae | 2450 | struct route_node *rn; |
2451 | int af; | |
2452 | zebra_fec_t *fec; | |
2453 | char buf[BUFSIZ]; | |
2454 | int write = 0; | |
f31e084c | 2455 | |
d62a17ae | 2456 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2457 | if (zvrf->fec_table[af] == NULL) | |
2458 | continue; | |
f31e084c | 2459 | |
d62a17ae | 2460 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2461 | rn = route_next(rn)) { | |
2462 | if (!rn->info) | |
2463 | continue; | |
f31e084c | 2464 | |
d62a17ae | 2465 | char lstr[BUFSIZ]; |
2466 | fec = rn->info; | |
f31e084c | 2467 | |
d62a17ae | 2468 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2469 | continue; | |
f31e084c | 2470 | |
d62a17ae | 2471 | write = 1; |
2472 | prefix2str(&rn->p, buf, BUFSIZ); | |
2473 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2474 | label2str(fec->label, lstr, BUFSIZ)); | |
2475 | } | |
2476 | } | |
f31e084c | 2477 | |
d62a17ae | 2478 | return write; |
f31e084c DS |
2479 | } |
2480 | ||
2481 | /* | |
2482 | * Display MPLS FEC to label binding (VTY command handler). | |
2483 | */ | |
d62a17ae | 2484 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2485 | { |
d62a17ae | 2486 | struct route_node *rn; |
2487 | int af; | |
f31e084c | 2488 | |
d62a17ae | 2489 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2490 | if (zvrf->fec_table[af] == NULL) | |
2491 | continue; | |
f31e084c | 2492 | |
d62a17ae | 2493 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2494 | rn = route_next(rn)) { | |
2495 | if (!rn->info) | |
2496 | continue; | |
2497 | fec_print(rn->info, vty); | |
2498 | } | |
2499 | } | |
f31e084c DS |
2500 | } |
2501 | ||
2502 | /* | |
2503 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2504 | */ | |
d62a17ae | 2505 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2506 | struct prefix *p) | |
f31e084c | 2507 | { |
d62a17ae | 2508 | struct route_table *table; |
2509 | struct route_node *rn; | |
f31e084c | 2510 | |
d62a17ae | 2511 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2512 | if (!table) | |
2513 | return; | |
f31e084c | 2514 | |
d62a17ae | 2515 | apply_mask(p); |
2516 | rn = route_node_lookup(table, p); | |
2517 | if (!rn) | |
2518 | return; | |
f31e084c | 2519 | |
d62a17ae | 2520 | route_unlock_node(rn); |
2521 | if (!rn->info) | |
2522 | return; | |
f31e084c | 2523 | |
d62a17ae | 2524 | fec_print(rn->info, vty); |
f31e084c DS |
2525 | } |
2526 | ||
8f77d0ee DS |
2527 | static bool mpls_ftn_update_nexthop(int add, struct nexthop *nexthop, |
2528 | enum lsp_types_t type, mpls_label_t label) | |
2529 | { | |
2530 | if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE) | |
2531 | nexthop_add_labels(nexthop, type, 1, &label); | |
2532 | else if (!add && nexthop->nh_label_type == type) | |
2533 | nexthop_del_labels(nexthop); | |
2534 | else | |
2535 | return false; | |
2536 | ||
2537 | return true; | |
2538 | } | |
2539 | ||
ce549947 RW |
2540 | /* |
2541 | * Install/uninstall a FEC-To-NHLFE (FTN) binding. | |
2542 | */ | |
d62a17ae | 2543 | int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type, |
2544 | struct prefix *prefix, enum nexthop_types_t gtype, | |
e132dea0 RW |
2545 | union g_addr *gate, ifindex_t ifindex, uint8_t route_type, |
2546 | unsigned short route_instance, mpls_label_t out_label) | |
d62a17ae | 2547 | { |
2548 | struct route_table *table; | |
2549 | struct route_node *rn; | |
2550 | struct route_entry *re; | |
2551 | struct nexthop *nexthop; | |
8f77d0ee | 2552 | bool found; |
d62a17ae | 2553 | |
2554 | /* Lookup table. */ | |
2555 | table = zebra_vrf_table(family2afi(prefix->family), SAFI_UNICAST, | |
2556 | zvrf_id(zvrf)); | |
2557 | if (!table) | |
2558 | return -1; | |
2559 | ||
2560 | /* Lookup existing route */ | |
2561 | rn = route_node_get(table, prefix); | |
a2addae8 | 2562 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2563 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2564 | continue; | |
e132dea0 | 2565 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2566 | break; |
88d88a9c | 2567 | } |
ce549947 | 2568 | |
d62a17ae | 2569 | if (re == NULL) |
2570 | return -1; | |
2571 | ||
8f77d0ee | 2572 | found = false; |
7ee30f28 | 2573 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 2574 | switch (nexthop->type) { |
2575 | case NEXTHOP_TYPE_IPV4: | |
2576 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
2577 | if (gtype != NEXTHOP_TYPE_IPV4 | |
2578 | && gtype != NEXTHOP_TYPE_IPV4_IFINDEX) | |
2579 | continue; | |
2580 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, &gate->ipv4)) | |
2581 | continue; | |
2582 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
2583 | && nexthop->ifindex != ifindex) | |
2584 | continue; | |
8f77d0ee DS |
2585 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2586 | out_label)) | |
2587 | return 0; | |
2588 | found = true; | |
2589 | break; | |
d62a17ae | 2590 | case NEXTHOP_TYPE_IPV6: |
2591 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2592 | if (gtype != NEXTHOP_TYPE_IPV6 | |
2593 | && gtype != NEXTHOP_TYPE_IPV6_IFINDEX) | |
2594 | continue; | |
2595 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, &gate->ipv6)) | |
2596 | continue; | |
2597 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
2598 | && nexthop->ifindex != ifindex) | |
2599 | continue; | |
8f77d0ee DS |
2600 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2601 | out_label)) | |
2602 | return 0; | |
2603 | found = true; | |
2604 | break; | |
d62a17ae | 2605 | default: |
2606 | break; | |
2607 | } | |
2608 | } | |
d62a17ae | 2609 | |
8f77d0ee DS |
2610 | if (!found) |
2611 | return -1; | |
ce549947 | 2612 | |
d62a17ae | 2613 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
332ad713 | 2614 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2615 | rib_queue_add(rn); |
ce549947 | 2616 | |
d62a17ae | 2617 | return 0; |
ce549947 RW |
2618 | } |
2619 | ||
2620 | /* | |
2621 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
2622 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
2623 | * the out-label for an existing NHLFE (update case). | |
2624 | */ | |
d62a17ae | 2625 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2626 | mpls_label_t in_label, mpls_label_t out_label, | |
2627 | enum nexthop_types_t gtype, union g_addr *gate, | |
2628 | ifindex_t ifindex) | |
2629 | { | |
2630 | struct hash *lsp_table; | |
2631 | zebra_ile_t tmp_ile; | |
2632 | zebra_lsp_t *lsp; | |
2633 | zebra_nhlfe_t *nhlfe; | |
2634 | char buf[BUFSIZ]; | |
2635 | ||
2636 | /* Lookup table. */ | |
2637 | lsp_table = zvrf->lsp_table; | |
2638 | if (!lsp_table) | |
2639 | return -1; | |
2640 | ||
2641 | /* If entry is present, exit. */ | |
2642 | tmp_ile.in_label = in_label; | |
2643 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2644 | if (!lsp) | |
2645 | return -1; | |
2646 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2647 | if (nhlfe) { | |
2648 | struct nexthop *nh = nhlfe->nexthop; | |
2649 | ||
2650 | assert(nh); | |
2651 | assert(nh->nh_label); | |
2652 | ||
2653 | /* Clear deleted flag (in case it was set) */ | |
2654 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2655 | if (nh->nh_label->label[0] == out_label) | |
2656 | /* No change */ | |
2657 | return 0; | |
2658 | ||
2659 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2660 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2661 | zlog_debug( | |
2662 | "LSP in-label %u type %d nexthop %s " | |
2663 | "out-label changed to %u (old %u)", | |
2664 | in_label, type, buf, out_label, | |
2665 | nh->nh_label->label[0]); | |
2666 | } | |
2667 | ||
2668 | /* Update out label, trigger processing. */ | |
2669 | nh->nh_label->label[0] = out_label; | |
2670 | } else { | |
2671 | /* Add LSP entry to this nexthop */ | |
2672 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, out_label); | |
2673 | if (!nhlfe) | |
2674 | return -1; | |
2675 | ||
2676 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2677 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2678 | zlog_debug( | |
2679 | "Add LSP in-label %u type %d nexthop %s " | |
2680 | "out-label %u", | |
2681 | in_label, type, buf, out_label); | |
2682 | } | |
2683 | ||
2684 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
2685 | } | |
2686 | ||
2687 | /* Mark NHLFE, queue LSP for processing. */ | |
2688 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2689 | if (lsp_processq_add(lsp)) | |
2690 | return -1; | |
2691 | ||
2692 | return 0; | |
ce549947 RW |
2693 | } |
2694 | ||
2695 | /* | |
2696 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
2697 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
2698 | */ | |
d62a17ae | 2699 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2700 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
2701 | union g_addr *gate, ifindex_t ifindex) | |
2702 | { | |
2703 | struct hash *lsp_table; | |
2704 | zebra_ile_t tmp_ile; | |
2705 | zebra_lsp_t *lsp; | |
2706 | zebra_nhlfe_t *nhlfe; | |
2707 | char buf[BUFSIZ]; | |
2708 | ||
2709 | /* Lookup table. */ | |
2710 | lsp_table = zvrf->lsp_table; | |
2711 | if (!lsp_table) | |
2712 | return -1; | |
2713 | ||
2714 | /* If entry is not present, exit. */ | |
2715 | tmp_ile.in_label = in_label; | |
2716 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2717 | if (!lsp) | |
2718 | return 0; | |
2719 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2720 | if (!nhlfe) | |
2721 | return 0; | |
2722 | ||
2723 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2724 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2725 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
2726 | in_label, type, buf, nhlfe->flags); | |
2727 | } | |
2728 | ||
2729 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
2730 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
2731 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2732 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2733 | if (lsp_processq_add(lsp)) | |
2734 | return -1; | |
2735 | } else { | |
2736 | nhlfe_del(nhlfe); | |
2737 | ||
2738 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
2739 | if (!lsp->nhlfe_list | |
2740 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) { | |
2741 | if (IS_ZEBRA_DEBUG_MPLS) | |
2742 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
2743 | lsp->ile.in_label, lsp->flags); | |
2744 | ||
2745 | lsp = hash_release(lsp_table, &lsp->ile); | |
0a22ddfb | 2746 | XFREE(MTYPE_LSP, lsp); |
d62a17ae | 2747 | } |
2748 | } | |
2749 | return 0; | |
ce549947 RW |
2750 | } |
2751 | ||
2752 | /* | |
2753 | * Uninstall all LDP NHLFEs for a particular LSP forwarding entry. | |
2754 | * If no other NHLFEs exist, the entry would be deleted. | |
2755 | */ | |
e3b78da8 | 2756 | void mpls_ldp_lsp_uninstall_all(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 2757 | { |
d62a17ae | 2758 | zebra_lsp_t *lsp; |
2759 | struct hash *lsp_table; | |
ce549947 | 2760 | |
e3b78da8 | 2761 | lsp = (zebra_lsp_t *)bucket->data; |
9ea660be | 2762 | if (!lsp->nhlfe_list) |
d62a17ae | 2763 | return; |
ce549947 | 2764 | |
d62a17ae | 2765 | lsp_table = ctxt; |
2766 | if (!lsp_table) | |
2767 | return; | |
ce549947 | 2768 | |
d62a17ae | 2769 | mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_LDP); |
ce549947 RW |
2770 | } |
2771 | ||
2772 | /* | |
2773 | * Uninstall all LDP FEC-To-NHLFE (FTN) bindings of the given address-family. | |
2774 | */ | |
d62a17ae | 2775 | void mpls_ldp_ftn_uninstall_all(struct zebra_vrf *zvrf, int afi) |
2776 | { | |
2777 | struct route_table *table; | |
2778 | struct route_node *rn; | |
2779 | struct route_entry *re; | |
2780 | struct nexthop *nexthop; | |
2781 | int update; | |
2782 | ||
2783 | /* Process routes of interested address-families. */ | |
2784 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2785 | if (!table) | |
2786 | return; | |
2787 | ||
2788 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
2789 | update = 0; | |
a2addae8 | 2790 | RNODE_FOREACH_RE (rn, re) { |
7ee30f28 | 2791 | for (nexthop = re->ng.nexthop; nexthop; |
407c87a6 DS |
2792 | nexthop = nexthop->next) { |
2793 | if (nexthop->nh_label_type != ZEBRA_LSP_LDP) | |
2794 | continue; | |
2795 | ||
d62a17ae | 2796 | nexthop_del_labels(nexthop); |
2797 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2798 | SET_FLAG(re->status, | |
332ad713 | 2799 | ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2800 | update = 1; |
2801 | } | |
407c87a6 | 2802 | } |
d62a17ae | 2803 | |
2804 | if (update) | |
2805 | rib_queue_add(rn); | |
2806 | } | |
ce549947 RW |
2807 | } |
2808 | ||
1c1cf002 | 2809 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 2810 | /* |
2811 | * Check that the label values used in LSP creation are consistent. The | |
2812 | * main criteria is that if there is ECMP, the label operation must still | |
2813 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
2814 | * to current HW restrictions. | |
2815 | */ | |
d62a17ae | 2816 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
2817 | mpls_label_t in_label, | |
2818 | mpls_label_t out_label, | |
2819 | enum nexthop_types_t gtype, | |
2820 | union g_addr *gate, ifindex_t ifindex) | |
2821 | { | |
2822 | struct hash *slsp_table; | |
2823 | zebra_ile_t tmp_ile; | |
2824 | zebra_slsp_t *slsp; | |
2825 | zebra_snhlfe_t *snhlfe; | |
2826 | ||
2827 | /* Lookup table. */ | |
2828 | slsp_table = zvrf->slsp_table; | |
2829 | if (!slsp_table) | |
2830 | return 0; | |
2831 | ||
2832 | /* If entry is not present, exit. */ | |
2833 | tmp_ile.in_label = in_label; | |
2834 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
2835 | if (!slsp) | |
2836 | return 1; | |
2837 | ||
2838 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2839 | if (snhlfe) { | |
2840 | if (snhlfe->out_label == out_label) | |
2841 | return 1; | |
2842 | ||
2843 | /* If not only NHLFE, cannot allow label change. */ | |
2844 | if (snhlfe != slsp->snhlfe_list || snhlfe->next) | |
2845 | return 0; | |
2846 | } else { | |
2847 | /* If other NHLFEs exist, label operation must match. */ | |
2848 | if (slsp->snhlfe_list) { | |
2849 | int cur_op, new_op; | |
2850 | ||
2851 | cur_op = (slsp->snhlfe_list->out_label | |
70e98a7f DS |
2852 | == MPLS_LABEL_IMPLICIT_NULL); |
2853 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); | |
d62a17ae | 2854 | if (cur_op != new_op) |
2855 | return 0; | |
2856 | } | |
2857 | } | |
2858 | ||
2859 | /* Label values are good. */ | |
2860 | return 1; | |
7758e3f3 | 2861 | } |
1c1cf002 | 2862 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 2863 | |
2864 | /* | |
2865 | * Add static LSP entry. This may be the first entry for this incoming label | |
2866 | * or an additional nexthop; an existing entry may also have outgoing label | |
2867 | * changed. | |
2868 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
2869 | * NHLFEs). | |
2870 | */ | |
d62a17ae | 2871 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
2872 | mpls_label_t out_label, | |
2873 | enum nexthop_types_t gtype, union g_addr *gate, | |
2874 | ifindex_t ifindex) | |
2875 | { | |
2876 | struct hash *slsp_table; | |
2877 | zebra_ile_t tmp_ile; | |
2878 | zebra_slsp_t *slsp; | |
2879 | zebra_snhlfe_t *snhlfe; | |
2880 | char buf[BUFSIZ]; | |
2881 | ||
2882 | /* Lookup table. */ | |
2883 | slsp_table = zvrf->slsp_table; | |
2884 | if (!slsp_table) | |
2885 | return -1; | |
2886 | ||
2887 | /* If entry is present, exit. */ | |
2888 | tmp_ile.in_label = in_label; | |
2889 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
2890 | if (!slsp) | |
2891 | return -1; | |
2892 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2893 | if (snhlfe) { | |
2894 | if (snhlfe->out_label == out_label) | |
2895 | /* No change */ | |
2896 | return 0; | |
2897 | ||
2898 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2899 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2900 | zlog_debug( | |
2901 | "Upd static LSP in-label %u nexthop %s " | |
2902 | "out-label %u (old %u)", | |
2903 | in_label, buf, out_label, snhlfe->out_label); | |
2904 | } | |
2905 | snhlfe->out_label = out_label; | |
2906 | } else { | |
2907 | /* Add static LSP entry to this nexthop */ | |
2908 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
2909 | if (!snhlfe) | |
2910 | return -1; | |
2911 | ||
2912 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2913 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2914 | zlog_debug( | |
2915 | "Add static LSP in-label %u nexthop %s out-label %u", | |
2916 | in_label, buf, out_label); | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | /* (Re)Install LSP in the main table. */ | |
2921 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, out_label, gtype, | |
2922 | gate, ifindex)) | |
2923 | return -1; | |
2924 | ||
2925 | return 0; | |
7758e3f3 | 2926 | } |
2927 | ||
2928 | /* | |
2929 | * Delete static LSP entry. This may be the delete of one particular | |
2930 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
2931 | * all NHLFEs). | |
2932 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
2933 | * LSP configuration. | |
2934 | */ | |
d62a17ae | 2935 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
2936 | enum nexthop_types_t gtype, union g_addr *gate, | |
2937 | ifindex_t ifindex) | |
2938 | { | |
2939 | struct hash *slsp_table; | |
2940 | zebra_ile_t tmp_ile; | |
2941 | zebra_slsp_t *slsp; | |
2942 | zebra_snhlfe_t *snhlfe; | |
2943 | ||
2944 | /* Lookup table. */ | |
2945 | slsp_table = zvrf->slsp_table; | |
2946 | if (!slsp_table) | |
2947 | return -1; | |
2948 | ||
2949 | /* If entry is not present, exit. */ | |
2950 | tmp_ile.in_label = in_label; | |
2951 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
2952 | if (!slsp) | |
2953 | return 0; | |
2954 | ||
2955 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
2956 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
2957 | if (IS_ZEBRA_DEBUG_MPLS) | |
2958 | zlog_debug("Del static LSP in-label %u", in_label); | |
2959 | ||
2960 | /* Uninstall entire LSP from the main table. */ | |
2961 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
2962 | ||
2963 | /* Delete all static NHLFEs */ | |
2964 | snhlfe_del_all(slsp); | |
2965 | } else { | |
2966 | /* Find specific NHLFE, exit if not found. */ | |
2967 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
2968 | if (!snhlfe) | |
2969 | return 0; | |
2970 | ||
2971 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2972 | char buf[BUFSIZ]; | |
2973 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
2974 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
2975 | in_label, buf); | |
2976 | } | |
2977 | ||
2978 | /* Uninstall LSP from the main table. */ | |
2979 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
2980 | gate, ifindex); | |
2981 | ||
2982 | /* Delete static LSP NHLFE */ | |
2983 | snhlfe_del(snhlfe); | |
2984 | } | |
2985 | ||
2986 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
2987 | * above. */ | |
2988 | if (!slsp->snhlfe_list) { | |
2989 | slsp = hash_release(slsp_table, &tmp_ile); | |
0a22ddfb | 2990 | XFREE(MTYPE_SLSP, slsp); |
d62a17ae | 2991 | } |
2992 | ||
2993 | return 0; | |
7758e3f3 | 2994 | } |
2995 | ||
40c7bdb0 | 2996 | /* |
2997 | * Schedule all MPLS label forwarding entries for processing. | |
2998 | * Called upon changes that may affect one or more of them such as | |
2999 | * interface or nexthop state changes. | |
3000 | */ | |
d62a17ae | 3001 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3002 | { |
d62a17ae | 3003 | if (!zvrf) |
3004 | return; | |
3005 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3006 | } |
3007 | ||
3ab18ff2 | 3008 | /* |
3009 | * Display MPLS label forwarding table for a specific LSP | |
3010 | * (VTY command handler). | |
3011 | */ | |
d62a17ae | 3012 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3013 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3014 | { |
d62a17ae | 3015 | struct hash *lsp_table; |
3016 | zebra_lsp_t *lsp; | |
3017 | zebra_ile_t tmp_ile; | |
3018 | json_object *json = NULL; | |
3ab18ff2 | 3019 | |
d62a17ae | 3020 | /* Lookup table. */ |
3021 | lsp_table = zvrf->lsp_table; | |
3022 | if (!lsp_table) | |
3023 | return; | |
3ab18ff2 | 3024 | |
d62a17ae | 3025 | /* If entry is not present, exit. */ |
3026 | tmp_ile.in_label = label; | |
3027 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3028 | if (!lsp) | |
3029 | return; | |
3ab18ff2 | 3030 | |
d62a17ae | 3031 | if (use_json) { |
3032 | json = lsp_json(lsp); | |
9d303b37 DL |
3033 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3034 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3035 | json_object_free(json); |
3036 | } else | |
3037 | lsp_print(lsp, (void *)vty); | |
3ab18ff2 | 3038 | } |
3039 | ||
3040 | /* | |
3041 | * Display MPLS label forwarding table (VTY command handler). | |
3042 | */ | |
d62a17ae | 3043 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3044 | bool use_json) |
d62a17ae | 3045 | { |
3046 | char buf[BUFSIZ]; | |
3047 | json_object *json = NULL; | |
3048 | zebra_lsp_t *lsp = NULL; | |
3049 | zebra_nhlfe_t *nhlfe = NULL; | |
3050 | struct nexthop *nexthop = NULL; | |
3051 | struct listnode *node = NULL; | |
3052 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3053 | ||
3054 | if (use_json) { | |
3055 | json = json_object_new_object(); | |
3056 | ||
3057 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3058 | json_object_object_add( | |
3059 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
3060 | lsp_json(lsp)); | |
3061 | ||
9d303b37 DL |
3062 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3063 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3064 | json_object_free(json); |
3065 | } else { | |
3066 | vty_out(vty, " Inbound Outbound\n"); | |
3067 | vty_out(vty, " Label Type Nexthop Label\n"); | |
3068 | vty_out(vty, "-------- ------- --------------- --------\n"); | |
3069 | ||
3070 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
3071 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
3072 | nhlfe = nhlfe->next) { | |
3073 | vty_out(vty, "%8d %7s ", lsp->ile.in_label, | |
3074 | nhlfe_type2str(nhlfe->type)); | |
3075 | nexthop = nhlfe->nexthop; | |
3076 | ||
3077 | switch (nexthop->type) { | |
996c9314 | 3078 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3079 | struct zebra_ns *zns; |
b9abd9ad DS |
3080 | struct interface *ifp; |
3081 | ||
86f07f44 PG |
3082 | zns = zebra_ns_lookup(NS_DEFAULT); |
3083 | ifp = if_lookup_by_index_per_ns( | |
3084 | zns, | |
3085 | nexthop->ifindex); | |
c2e10644 MS |
3086 | if (ifp) |
3087 | vty_out(vty, "%15s", ifp->name); | |
3088 | else | |
3089 | vty_out(vty, "%15s", "Null"); | |
3090 | ||
b9abd9ad DS |
3091 | break; |
3092 | } | |
d62a17ae | 3093 | case NEXTHOP_TYPE_IPV4: |
3094 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
3095 | vty_out(vty, "%15s", | |
3096 | inet_ntoa(nexthop->gate.ipv4)); | |
3097 | break; | |
3098 | case NEXTHOP_TYPE_IPV6: | |
3099 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
3100 | vty_out(vty, "%15s", | |
3101 | inet_ntop(AF_INET6, | |
3102 | &nexthop->gate.ipv6, | |
3103 | buf, BUFSIZ)); | |
3104 | break; | |
3105 | default: | |
3106 | break; | |
3107 | } | |
3108 | ||
b9abd9ad | 3109 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
fc5cca9f DS |
3110 | vty_out(vty, " %8s\n", |
3111 | mpls_label2str( | |
3112 | nexthop->nh_label | |
3113 | ->num_labels, | |
3114 | &nexthop->nh_label | |
3115 | ->label[0], | |
3116 | buf, BUFSIZ, 1)); | |
b9abd9ad DS |
3117 | else |
3118 | vty_out(vty, "\n"); | |
d62a17ae | 3119 | } |
3120 | } | |
3121 | ||
3122 | vty_out(vty, "\n"); | |
3123 | } | |
3124 | ||
6a154c88 | 3125 | list_delete(&lsp_list); |
3ab18ff2 | 3126 | } |
3127 | ||
7758e3f3 | 3128 | /* |
3129 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3130 | */ | |
d62a17ae | 3131 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3132 | { | |
3133 | zebra_slsp_t *slsp; | |
3134 | zebra_snhlfe_t *snhlfe; | |
3135 | struct listnode *node; | |
3136 | struct list *slsp_list = | |
3137 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
3138 | ||
3139 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
3140 | for (snhlfe = slsp->snhlfe_list; snhlfe; | |
3141 | snhlfe = snhlfe->next) { | |
0af35d90 | 3142 | char buf[BUFSIZ]; |
d62a17ae | 3143 | char lstr[30]; |
3144 | ||
0af35d90 | 3145 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 3146 | switch (snhlfe->out_label) { |
70e98a7f DS |
3147 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3148 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3149 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3150 | break; | |
70e98a7f | 3151 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3152 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3153 | break; | |
3154 | default: | |
3155 | sprintf(lstr, "%u", snhlfe->out_label); | |
3156 | break; | |
3157 | } | |
3158 | ||
3159 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
3160 | buf, lstr); | |
3161 | } | |
3162 | } | |
b78b820d | 3163 | |
6a154c88 | 3164 | list_delete(&slsp_list); |
d62a17ae | 3165 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3166 | } |
3167 | ||
1b6d5c7e VV |
3168 | /* |
3169 | * Add/update global label block. | |
3170 | */ | |
d7c0a89a QY |
3171 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3172 | uint32_t end_label) | |
1b6d5c7e | 3173 | { |
d62a17ae | 3174 | zvrf->mpls_srgb.start_label = start_label; |
3175 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3176 | |
d62a17ae | 3177 | /* Evaluate registered FECs to see if any get a label or not. */ |
3178 | fec_evaluate(zvrf); | |
3179 | return 0; | |
1b6d5c7e VV |
3180 | } |
3181 | ||
3182 | /* | |
3183 | * Delete global label block. | |
3184 | */ | |
d62a17ae | 3185 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3186 | { |
d62a17ae | 3187 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3188 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3189 | |
d62a17ae | 3190 | /* Process registered FECs to clear their local label, if needed. */ |
3191 | fec_evaluate(zvrf); | |
3192 | return 0; | |
1b6d5c7e VV |
3193 | } |
3194 | ||
3195 | /* | |
3196 | * Display MPLS global label block configuration (VTY command handler). | |
3197 | */ | |
d62a17ae | 3198 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3199 | { |
d62a17ae | 3200 | if (zvrf->mpls_srgb.start_label == 0) |
3201 | return 0; | |
1b6d5c7e | 3202 | |
d62a17ae | 3203 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3204 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3205 | vty_out(vty, "mpls label global-block %u %u\n", | |
3206 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3207 | } | |
1b6d5c7e | 3208 | |
d62a17ae | 3209 | return 1; |
1b6d5c7e VV |
3210 | } |
3211 | ||
84915b0a | 3212 | /* |
3213 | * Called when VRF becomes inactive, cleans up information but keeps | |
3214 | * the table itself. | |
84915b0a | 3215 | */ |
3216 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3217 | { | |
c2e10644 MS |
3218 | struct zebra_vrf *def_zvrf; |
3219 | afi_t afi; | |
3220 | ||
3221 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3222 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3223 | else { | |
3224 | /* | |
3225 | * For other vrfs, we try to remove associated LSPs; we locate | |
3226 | * the LSPs in the default vrf. | |
3227 | */ | |
3228 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3229 | ||
3230 | /* At shutdown, the default may be gone already */ | |
3231 | if (def_zvrf == NULL) | |
3232 | return; | |
3233 | ||
3234 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3235 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3236 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3237 | } | |
3238 | } | |
84915b0a | 3239 | } |
3240 | ||
40c7bdb0 | 3241 | /* |
3242 | * Called upon process exiting, need to delete LSP forwarding | |
3243 | * entries from the kernel. | |
3244 | * NOTE: Currently supported only for default VRF. | |
3245 | */ | |
d62a17ae | 3246 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3247 | { |
d62a17ae | 3248 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3249 | hash_clean(zvrf->lsp_table, NULL); | |
3250 | hash_free(zvrf->lsp_table); | |
3251 | hash_clean(zvrf->slsp_table, NULL); | |
3252 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3253 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3254 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3255 | } |
3256 | ||
7758e3f3 | 3257 | /* |
3258 | * Allocate MPLS tables for this VRF and do other initialization. | |
3259 | * NOTE: Currently supported only for default VRF. | |
3260 | */ | |
d62a17ae | 3261 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3262 | { |
d62a17ae | 3263 | if (!zvrf) |
3264 | return; | |
996c9314 LB |
3265 | zvrf->slsp_table = |
3266 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3267 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3268 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3269 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3270 | zvrf->mpls_flags = 0; | |
3271 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3272 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3273 | } |
3274 | ||
3275 | /* | |
3276 | * Global MPLS initialization. | |
3277 | */ | |
d62a17ae | 3278 | void zebra_mpls_init(void) |
7758e3f3 | 3279 | { |
d62a17ae | 3280 | mpls_enabled = 0; |
33c32282 | 3281 | |
d62a17ae | 3282 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3283 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3284 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3285 | return; |
3286 | } | |
fe6c7157 | 3287 | |
2561d12e | 3288 | if (!mpls_processq_init()) |
d62a17ae | 3289 | mpls_enabled = 1; |
453844ab | 3290 | |
21ccc0cf | 3291 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
7758e3f3 | 3292 | } |