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