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7758e3f3 | 1 | /* Zebra MPLS code |
2 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
7758e3f3 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "table.h" | |
25 | #include "memory.h" | |
7758e3f3 | 26 | #include "command.h" |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "sockunion.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "workqueue.h" | |
33 | #include "prefix.h" | |
34 | #include "routemap.h" | |
35 | #include "stream.h" | |
36 | #include "nexthop.h" | |
a971aeb6 | 37 | #include "termtable.h" |
b78b820d | 38 | #include "lib/json.h" |
7758e3f3 | 39 | |
40 | #include "zebra/rib.h" | |
41 | #include "zebra/rt.h" | |
86f07f44 | 42 | #include "zebra/interface.h" |
7758e3f3 | 43 | #include "zebra/zserv.h" |
3801e764 | 44 | #include "zebra/zebra_router.h" |
7758e3f3 | 45 | #include "zebra/redistribute.h" |
46 | #include "zebra/debug.h" | |
47 | #include "zebra/zebra_memory.h" | |
48 | #include "zebra/zebra_vrf.h" | |
49 | #include "zebra/zebra_mpls.h" | |
43e52561 | 50 | #include "zebra/zebra_errors.h" |
7758e3f3 | 51 | |
d62a17ae | 52 | DEFINE_MTYPE_STATIC(ZEBRA, LSP, "MPLS LSP object") |
53 | DEFINE_MTYPE_STATIC(ZEBRA, FEC, "MPLS FEC object") | |
54 | DEFINE_MTYPE_STATIC(ZEBRA, SLSP, "MPLS static LSP config") | |
55 | DEFINE_MTYPE_STATIC(ZEBRA, NHLFE, "MPLS nexthop object") | |
56 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE, "MPLS static nexthop object") | |
57 | DEFINE_MTYPE_STATIC(ZEBRA, SNHLFE_IFNAME, "MPLS static nexthop ifname") | |
7758e3f3 | 58 | |
fe6c7157 RW |
59 | int mpls_enabled; |
60 | ||
7758e3f3 | 61 | /* static function declarations */ |
f31e084c | 62 | |
d62a17ae | 63 | static void fec_evaluate(struct zebra_vrf *zvrf); |
d7c0a89a QY |
64 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *vrf, |
65 | zebra_fec_t *fec); | |
d62a17ae | 66 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
67 | struct route_node *rn, struct route_entry *re); | |
68 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label); | |
69 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, | |
70 | mpls_label_t old_label); | |
71 | static int fec_send(zebra_fec_t *fec, struct zserv *client); | |
72 | static void fec_update_clients(zebra_fec_t *fec); | |
73 | static void fec_print(zebra_fec_t *fec, struct vty *vty); | |
74 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p); | |
75 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, | |
d7c0a89a QY |
76 | mpls_label_t label, uint32_t flags, |
77 | uint32_t label_index); | |
d62a17ae | 78 | static int fec_del(zebra_fec_t *fec); |
79 | ||
d8b87afe | 80 | static unsigned int label_hash(const void *p); |
74df8d6d | 81 | static bool label_cmp(const void *p1, const void *p2); |
d62a17ae | 82 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
83 | struct nexthop *nexthop); | |
84 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, | |
85 | struct nexthop *nexthop); | |
86 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe); | |
87 | ||
88 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp); | |
e3b78da8 TB |
89 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt); |
90 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt); | |
d62a17ae | 91 | static wq_item_status lsp_process(struct work_queue *wq, void *data); |
92 | static void lsp_processq_del(struct work_queue *wq, void *data); | |
93 | static void lsp_processq_complete(struct work_queue *wq); | |
94 | static int lsp_processq_add(zebra_lsp_t *lsp); | |
95 | static void *lsp_alloc(void *p); | |
ebab422a MS |
96 | /* Free lsp; sets caller's pointer to NULL */ |
97 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
d62a17ae | 98 | |
99 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size); | |
100 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, | |
e4a1ec74 | 101 | const union g_addr *gate, ifindex_t ifindex); |
d62a17ae | 102 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
103 | enum nexthop_types_t gtype, |
104 | const union g_addr *gate, ifindex_t ifindex); | |
d62a17ae | 105 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
106 | enum nexthop_types_t gtype, |
107 | const union g_addr *gate, ifindex_t ifindex, | |
108 | uint8_t num_labels, mpls_label_t *labels); | |
d62a17ae | 109 | static int nhlfe_del(zebra_nhlfe_t *snhlfe); |
110 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, | |
8ecdb26e | 111 | struct mpls_label_stack *nh_label); |
d62a17ae | 112 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
113 | enum lsp_types_t type); | |
114 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, | |
115 | mpls_label_t in_label); | |
116 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty); | |
117 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt); | |
118 | static void *slsp_alloc(void *p); | |
119 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, | |
e4a1ec74 | 120 | const union g_addr *gate, ifindex_t ifindex); |
d62a17ae | 121 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
122 | enum nexthop_types_t gtype, | |
e4a1ec74 | 123 | const union g_addr *gate, ifindex_t ifindex); |
d62a17ae | 124 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
125 | enum nexthop_types_t gtype, | |
e4a1ec74 | 126 | const union g_addr *gate, ifindex_t ifindex, |
d62a17ae | 127 | mpls_label_t out_label); |
128 | static int snhlfe_del(zebra_snhlfe_t *snhlfe); | |
129 | static int snhlfe_del_all(zebra_slsp_t *slsp); | |
130 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size); | |
651105b5 RW |
131 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
132 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
133 | int afi, enum lsp_types_t lsp_type); | |
7758e3f3 | 134 | |
135 | ||
136 | /* Static functions */ | |
137 | ||
3d468f66 DS |
138 | /* |
139 | * Handle failure in LSP install, clear flags for NHLFE. | |
140 | */ | |
141 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
142 | { | |
143 | zebra_nhlfe_t *nhlfe; | |
144 | struct nexthop *nexthop; | |
145 | ||
146 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
147 | nexthop = nhlfe->nexthop; | |
148 | if (!nexthop) | |
149 | continue; | |
150 | ||
151 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
152 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
153 | } | |
154 | } | |
155 | ||
a64448ba DS |
156 | /* |
157 | * Install label forwarding entry based on labeled-route entry. | |
158 | */ | |
d62a17ae | 159 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
160 | struct route_node *rn, struct route_entry *re) | |
161 | { | |
162 | struct hash *lsp_table; | |
163 | zebra_ile_t tmp_ile; | |
164 | zebra_lsp_t *lsp; | |
165 | zebra_nhlfe_t *nhlfe; | |
166 | struct nexthop *nexthop; | |
167 | enum lsp_types_t lsp_type; | |
168 | char buf[BUFSIZ]; | |
169 | int added, changed; | |
170 | ||
171 | /* Lookup table. */ | |
172 | lsp_table = zvrf->lsp_table; | |
173 | if (!lsp_table) | |
174 | return -1; | |
175 | ||
176 | lsp_type = lsp_type_from_re_type(re->type); | |
177 | added = changed = 0; | |
178 | ||
179 | /* Locate or allocate LSP entry. */ | |
180 | tmp_ile.in_label = label; | |
181 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
182 | if (!lsp) | |
183 | return -1; | |
184 | ||
185 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
186 | * recursive nexthops right now, because intermediate hops won't | |
187 | * understand | |
188 | * the label advertised by the recursive nexthop (plus we don't have the | |
189 | * logic yet to push multiple labels). | |
190 | */ | |
c415d895 | 191 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 192 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 193 | /* Skip inactive and recursive entries. */ |
194 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
195 | continue; | |
196 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
197 | continue; | |
198 | ||
199 | nhlfe = nhlfe_find(lsp, lsp_type, nexthop->type, &nexthop->gate, | |
200 | nexthop->ifindex); | |
201 | if (nhlfe) { | |
202 | /* Clear deleted flag (in case it was set) */ | |
203 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
204 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
205 | /* No change */ | |
206 | continue; | |
207 | ||
208 | ||
209 | if (IS_ZEBRA_DEBUG_MPLS) { | |
210 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
211 | zlog_debug( | |
212 | "LSP in-label %u type %d nexthop %s " | |
213 | "out-label changed", | |
214 | lsp->ile.in_label, lsp_type, buf); | |
215 | } | |
216 | ||
217 | /* Update out label, trigger processing. */ | |
218 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
219 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
220 | changed++; | |
221 | } else { | |
222 | /* Add LSP entry to this nexthop */ | |
223 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
224 | &nexthop->gate, nexthop->ifindex, | |
5065db0a RW |
225 | nexthop->nh_label->num_labels, |
226 | nexthop->nh_label->label); | |
d62a17ae | 227 | if (!nhlfe) |
228 | return -1; | |
229 | ||
230 | if (IS_ZEBRA_DEBUG_MPLS) { | |
231 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
232 | zlog_debug( | |
233 | "Add LSP in-label %u type %d nexthop %s " | |
234 | "out-label %u", | |
235 | lsp->ile.in_label, lsp_type, buf, | |
236 | nexthop->nh_label->label[0]); | |
237 | } | |
238 | ||
239 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
240 | ||
241 | /* Mark NHLFE as changed. */ | |
242 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
243 | added++; | |
244 | } | |
245 | } | |
246 | ||
247 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
248 | * case), delete the LSP entry; this case results in somewhat ugly | |
249 | * logging. | |
250 | */ | |
251 | if (added || changed) { | |
252 | if (lsp_processq_add(lsp)) | |
253 | return -1; | |
254 | } else if (!lsp->nhlfe_list | |
ebab422a MS |
255 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) |
256 | lsp_free(lsp_table, &lsp); | |
d62a17ae | 257 | |
258 | return 0; | |
a64448ba DS |
259 | } |
260 | ||
261 | /* | |
262 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
263 | * NHLFEs are removed, the entire entry is deleted. | |
264 | */ | |
d62a17ae | 265 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
266 | { | |
267 | struct hash *lsp_table; | |
268 | zebra_ile_t tmp_ile; | |
269 | zebra_lsp_t *lsp; | |
270 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
271 | char buf[BUFSIZ]; | |
272 | ||
273 | /* Lookup table. */ | |
274 | lsp_table = zvrf->lsp_table; | |
275 | if (!lsp_table) | |
276 | return -1; | |
277 | ||
278 | /* If entry is not present, exit. */ | |
279 | tmp_ile.in_label = label; | |
280 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
281 | if (!lsp || !lsp->nhlfe_list) | |
282 | return 0; | |
283 | ||
284 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
285 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
286 | nhlfe_next = nhlfe->next; | |
287 | ||
288 | /* Skip static NHLFEs */ | |
289 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
290 | continue; | |
291 | ||
292 | if (IS_ZEBRA_DEBUG_MPLS) { | |
293 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
294 | zlog_debug( | |
295 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
296 | label, nhlfe->type, buf, nhlfe->flags); | |
297 | } | |
298 | ||
299 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
300 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
301 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
302 | } else { | |
303 | nhlfe_del(nhlfe); | |
304 | } | |
305 | } | |
306 | ||
307 | /* Queue LSP for processing, if needed, else delete. */ | |
308 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
309 | if (lsp_processq_add(lsp)) | |
310 | return -1; | |
311 | } else if (!lsp->nhlfe_list | |
ebab422a MS |
312 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) |
313 | lsp_free(lsp_table, &lsp); | |
d62a17ae | 314 | |
315 | return 0; | |
a64448ba DS |
316 | } |
317 | ||
28d58fd7 VV |
318 | /* |
319 | * This function is invoked upon change to label block configuration; it | |
320 | * will walk all registered FECs with label-index and appropriately update | |
321 | * their local labels and trigger client updates. | |
322 | */ | |
d62a17ae | 323 | static void fec_evaluate(struct zebra_vrf *zvrf) |
324 | { | |
325 | struct route_node *rn; | |
326 | zebra_fec_t *fec; | |
d7c0a89a | 327 | uint32_t old_label, new_label; |
d62a17ae | 328 | int af; |
329 | char buf[BUFSIZ]; | |
330 | ||
331 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
332 | if (zvrf->fec_table[af] == NULL) | |
333 | continue; | |
334 | ||
335 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
336 | rn = route_next(rn)) { | |
337 | if ((fec = rn->info) == NULL) | |
338 | continue; | |
339 | ||
340 | /* Skip configured FECs and those without a label index. | |
341 | */ | |
342 | if (fec->flags & FEC_FLAG_CONFIGURED | |
343 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
344 | continue; | |
345 | ||
346 | if (IS_ZEBRA_DEBUG_MPLS) | |
347 | prefix2str(&rn->p, buf, BUFSIZ); | |
348 | ||
349 | /* Save old label, determine new label. */ | |
350 | old_label = fec->label; | |
351 | new_label = | |
352 | zvrf->mpls_srgb.start_label + fec->label_index; | |
353 | if (new_label >= zvrf->mpls_srgb.end_label) | |
354 | new_label = MPLS_INVALID_LABEL; | |
355 | ||
356 | /* If label has changed, update FEC and clients. */ | |
357 | if (new_label == old_label) | |
358 | continue; | |
359 | ||
360 | if (IS_ZEBRA_DEBUG_MPLS) | |
361 | zlog_debug( | |
362 | "Update fec %s new label %u upon label block", | |
363 | buf, new_label); | |
364 | ||
365 | fec->label = new_label; | |
366 | fec_update_clients(fec); | |
367 | ||
368 | /* Update label forwarding entries appropriately */ | |
369 | fec_change_update_lsp(zvrf, fec, old_label); | |
370 | } | |
371 | } | |
28d58fd7 VV |
372 | } |
373 | ||
374 | /* | |
375 | * Derive (if possible) and update the local label for the FEC based on | |
376 | * its label index. The index is "acceptable" if it falls within the | |
377 | * globally configured label block (SRGB). | |
378 | */ | |
d7c0a89a QY |
379 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
380 | zebra_fec_t *fec) | |
28d58fd7 | 381 | { |
d7c0a89a | 382 | uint32_t label; |
28d58fd7 | 383 | |
d62a17ae | 384 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
385 | && zvrf->mpls_srgb.start_label | |
386 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
387 | < zvrf->mpls_srgb.end_label)) | |
388 | fec->label = label; | |
389 | else | |
390 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 391 | |
d62a17ae | 392 | return fec->label; |
28d58fd7 VV |
393 | } |
394 | ||
a64448ba DS |
395 | /* |
396 | * There is a change for this FEC. Install or uninstall label forwarding | |
397 | * entries, as appropriate. | |
398 | */ | |
d62a17ae | 399 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
400 | mpls_label_t old_label) | |
a64448ba | 401 | { |
d62a17ae | 402 | struct route_table *table; |
403 | struct route_node *rn; | |
404 | struct route_entry *re; | |
405 | afi_t afi; | |
a64448ba | 406 | |
d62a17ae | 407 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
408 | if (old_label != MPLS_INVALID_LABEL |
409 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 410 | lsp_uninstall(zvrf, old_label); |
a64448ba | 411 | |
d62a17ae | 412 | /* Install label forwarding entry corr. to new label, if needed. */ |
413 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 414 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 415 | return 0; |
a64448ba | 416 | |
d62a17ae | 417 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
418 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
419 | if (!table) | |
420 | return 0; | |
a64448ba | 421 | |
d62a17ae | 422 | /* See if labeled route exists. */ |
423 | rn = route_node_lookup(table, &fec->rn->p); | |
424 | if (!rn) | |
425 | return 0; | |
a64448ba | 426 | |
a2addae8 | 427 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 428 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
429 | break; | |
430 | } | |
a64448ba | 431 | |
d62a17ae | 432 | if (!re || !zebra_rib_labeled_unicast(re)) |
433 | return 0; | |
a64448ba | 434 | |
d62a17ae | 435 | if (lsp_install(zvrf, fec->label, rn, re)) |
436 | return -1; | |
a64448ba | 437 | |
d62a17ae | 438 | return 0; |
a64448ba DS |
439 | } |
440 | ||
5aba114a DS |
441 | /* |
442 | * Inform about FEC to a registered client. | |
443 | */ | |
d62a17ae | 444 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 445 | { |
d62a17ae | 446 | struct stream *s; |
447 | struct route_node *rn; | |
5aba114a | 448 | |
d62a17ae | 449 | rn = fec->rn; |
5aba114a | 450 | |
d62a17ae | 451 | /* Get output stream. */ |
1002497a | 452 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 453 | |
7cf15b25 | 454 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 455 | |
d62a17ae | 456 | stream_putw(s, rn->p.family); |
457 | stream_put_prefix(s, &rn->p); | |
458 | stream_putl(s, fec->label); | |
459 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 460 | return zserv_send_message(client, s); |
5aba114a DS |
461 | } |
462 | ||
463 | /* | |
464 | * Update all registered clients about this FEC. Caller should've updated | |
465 | * FEC and ensure no duplicate updates. | |
466 | */ | |
d62a17ae | 467 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 468 | { |
d62a17ae | 469 | struct listnode *node; |
470 | struct zserv *client; | |
5aba114a | 471 | |
d62a17ae | 472 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
473 | if (IS_ZEBRA_DEBUG_MPLS) | |
474 | zlog_debug("Update client %s", | |
475 | zebra_route_string(client->proto)); | |
476 | fec_send(fec, client); | |
477 | } | |
5aba114a DS |
478 | } |
479 | ||
480 | ||
f31e084c DS |
481 | /* |
482 | * Print a FEC-label binding entry. | |
483 | */ | |
d62a17ae | 484 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
485 | { | |
486 | struct route_node *rn; | |
487 | struct listnode *node; | |
488 | struct zserv *client; | |
489 | char buf[BUFSIZ]; | |
490 | ||
491 | rn = fec->rn; | |
492 | prefix2str(&rn->p, buf, BUFSIZ); | |
493 | vty_out(vty, "%s\n", buf); | |
494 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
495 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
496 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
497 | vty_out(vty, "\n"); | |
498 | if (!list_isempty(fec->client_list)) { | |
499 | vty_out(vty, " Client list:"); | |
500 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
501 | vty_out(vty, " %s(fd %d)", | |
502 | zebra_route_string(client->proto), | |
503 | client->sock); | |
504 | vty_out(vty, "\n"); | |
505 | } | |
f31e084c DS |
506 | } |
507 | ||
508 | /* | |
509 | * Locate FEC-label binding that matches with passed info. | |
510 | */ | |
d62a17ae | 511 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 512 | { |
d62a17ae | 513 | struct route_node *rn; |
f31e084c | 514 | |
d62a17ae | 515 | apply_mask(p); |
516 | rn = route_node_lookup(table, p); | |
517 | if (!rn) | |
518 | return NULL; | |
f31e084c | 519 | |
d62a17ae | 520 | route_unlock_node(rn); |
521 | return (rn->info); | |
f31e084c DS |
522 | } |
523 | ||
524 | /* | |
5aba114a DS |
525 | * Add a FEC. This may be upon a client registering for a binding |
526 | * or when a binding is configured. | |
f31e084c | 527 | */ |
d62a17ae | 528 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
529 | mpls_label_t label, uint32_t flags, |
530 | uint32_t label_index) | |
f31e084c | 531 | { |
d62a17ae | 532 | struct route_node *rn; |
533 | zebra_fec_t *fec; | |
f31e084c | 534 | |
d62a17ae | 535 | apply_mask(p); |
f31e084c | 536 | |
d62a17ae | 537 | /* Lookup (or add) route node.*/ |
538 | rn = route_node_get(table, p); | |
539 | if (!rn) | |
540 | return NULL; | |
f31e084c | 541 | |
d62a17ae | 542 | fec = rn->info; |
f31e084c | 543 | |
d62a17ae | 544 | if (!fec) { |
545 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 546 | |
d62a17ae | 547 | rn->info = fec; |
548 | fec->rn = rn; | |
549 | fec->label = label; | |
550 | fec->client_list = list_new(); | |
551 | } else | |
552 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 553 | |
d62a17ae | 554 | fec->label_index = label_index; |
555 | fec->flags = flags; | |
f31e084c | 556 | |
d62a17ae | 557 | return fec; |
f31e084c DS |
558 | } |
559 | ||
560 | /* | |
5aba114a DS |
561 | * Delete a FEC. This may be upon the last client deregistering for |
562 | * a FEC and no binding exists or when the binding is deleted and there | |
563 | * are no registered clients. | |
f31e084c | 564 | */ |
d62a17ae | 565 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 566 | { |
6a154c88 | 567 | list_delete(&fec->client_list); |
d62a17ae | 568 | fec->rn->info = NULL; |
569 | route_unlock_node(fec->rn); | |
570 | XFREE(MTYPE_FEC, fec); | |
571 | return 0; | |
f31e084c DS |
572 | } |
573 | ||
7758e3f3 | 574 | /* |
575 | * Hash function for label. | |
576 | */ | |
d8b87afe | 577 | static unsigned int label_hash(const void *p) |
7758e3f3 | 578 | { |
d62a17ae | 579 | const zebra_ile_t *ile = p; |
7758e3f3 | 580 | |
d62a17ae | 581 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 582 | } |
583 | ||
584 | /* | |
585 | * Compare 2 LSP hash entries based on in-label. | |
586 | */ | |
74df8d6d | 587 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 588 | { |
d62a17ae | 589 | const zebra_ile_t *ile1 = p1; |
590 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 591 | |
d62a17ae | 592 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 593 | } |
594 | ||
40c7bdb0 | 595 | /* |
596 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
597 | * the passed flag. | |
598 | * NOTE: Looking only for connected routes right now. | |
599 | */ | |
d62a17ae | 600 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
601 | struct nexthop *nexthop) | |
40c7bdb0 | 602 | { |
d62a17ae | 603 | struct route_table *table; |
604 | struct prefix_ipv4 p; | |
605 | struct route_node *rn; | |
606 | struct route_entry *match; | |
607 | struct nexthop *match_nh; | |
40c7bdb0 | 608 | |
4a7371e9 | 609 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 610 | if (!table) |
611 | return 0; | |
40c7bdb0 | 612 | |
d62a17ae | 613 | /* Lookup nexthop in IPv4 routing table. */ |
614 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
615 | p.family = AF_INET; | |
616 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
617 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 618 | |
d62a17ae | 619 | rn = route_node_match(table, (struct prefix *)&p); |
620 | if (!rn) | |
621 | return 0; | |
40c7bdb0 | 622 | |
d62a17ae | 623 | route_unlock_node(rn); |
88d88a9c | 624 | |
d62a17ae | 625 | /* Locate a valid connected route. */ |
a2addae8 | 626 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 627 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
628 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
629 | continue; | |
630 | ||
c415d895 | 631 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 632 | match_nh = match_nh->next) { |
633 | if (match->type == ZEBRA_ROUTE_CONNECT | |
634 | || nexthop->ifindex == match_nh->ifindex) { | |
635 | nexthop->ifindex = match_nh->ifindex; | |
636 | return 1; | |
637 | } | |
638 | } | |
88d88a9c | 639 | } |
40c7bdb0 | 640 | |
d62a17ae | 641 | return 0; |
40c7bdb0 | 642 | } |
643 | ||
644 | ||
645 | /* | |
646 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
647 | * the passed flag. | |
648 | * NOTE: Looking only for connected routes right now. | |
649 | */ | |
d62a17ae | 650 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
651 | struct nexthop *nexthop) | |
40c7bdb0 | 652 | { |
d62a17ae | 653 | struct route_table *table; |
654 | struct prefix_ipv6 p; | |
655 | struct route_node *rn; | |
656 | struct route_entry *match; | |
40c7bdb0 | 657 | |
4a7371e9 | 658 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 659 | if (!table) |
660 | return 0; | |
40c7bdb0 | 661 | |
d62a17ae | 662 | /* Lookup nexthop in IPv6 routing table. */ |
663 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
664 | p.family = AF_INET6; | |
665 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
666 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 667 | |
d62a17ae | 668 | rn = route_node_match(table, (struct prefix *)&p); |
669 | if (!rn) | |
670 | return 0; | |
40c7bdb0 | 671 | |
d62a17ae | 672 | route_unlock_node(rn); |
40c7bdb0 | 673 | |
d62a17ae | 674 | /* Locate a valid connected route. */ |
a2addae8 | 675 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 676 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
677 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
678 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
679 | break; | |
680 | } | |
40c7bdb0 | 681 | |
c415d895 | 682 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 683 | return 0; |
40c7bdb0 | 684 | |
c415d895 | 685 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 686 | return 1; |
40c7bdb0 | 687 | } |
688 | ||
689 | ||
690 | /* | |
691 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
692 | * or not. | |
693 | * NOTE: Each NHLFE points to only 1 nexthop. | |
694 | */ | |
d62a17ae | 695 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
696 | { | |
697 | struct nexthop *nexthop; | |
698 | struct interface *ifp; | |
86f07f44 | 699 | struct zebra_ns *zns; |
d62a17ae | 700 | |
701 | nexthop = nhlfe->nexthop; | |
702 | if (!nexthop) // unexpected | |
703 | return 0; | |
704 | ||
705 | /* Check on nexthop based on type. */ | |
706 | switch (nexthop->type) { | |
b9abd9ad DS |
707 | case NEXTHOP_TYPE_IFINDEX: |
708 | /* | |
709 | * Lookup if this type is special. The | |
710 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
711 | * forward into a different table for | |
712 | * processing. As such this ifindex | |
713 | * passed to us may be a VRF device | |
714 | * which will not be in the default | |
715 | * VRF. So let's look in all of them | |
716 | */ | |
86f07f44 PG |
717 | zns = zebra_ns_lookup(NS_DEFAULT); |
718 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
719 | if (ifp && if_is_operative(ifp)) |
720 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
721 | else | |
722 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
723 | break; | |
d62a17ae | 724 | case NEXTHOP_TYPE_IPV4: |
725 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
726 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
727 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
728 | else | |
729 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
730 | break; | |
731 | ||
732 | case NEXTHOP_TYPE_IPV6: | |
733 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
734 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
735 | else | |
736 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
737 | break; | |
738 | ||
739 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
740 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
741 | ifp = if_lookup_by_index(nexthop->ifindex, |
742 | nexthop->vrf_id); | |
d62a17ae | 743 | if (ifp && if_is_operative(ifp)) |
744 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
745 | else | |
746 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
747 | } else { | |
748 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
749 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
750 | else | |
751 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
752 | } | |
753 | break; | |
754 | ||
755 | default: | |
756 | break; | |
757 | } | |
758 | ||
759 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 760 | } |
761 | ||
762 | /* | |
763 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
764 | * reachability and select the best. Multipath entries are also | |
765 | * marked. This is invoked when an LSP scheduled for processing (due | |
766 | * to some change) is examined. | |
767 | */ | |
d62a17ae | 768 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
769 | { | |
770 | zebra_nhlfe_t *nhlfe; | |
771 | zebra_nhlfe_t *best; | |
772 | struct nexthop *nexthop; | |
773 | int changed = 0; | |
774 | ||
775 | if (!lsp) | |
776 | return; | |
777 | ||
778 | best = NULL; | |
779 | lsp->num_ecmp = 0; | |
780 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
781 | ||
782 | /* | |
783 | * First compute the best path, after checking nexthop status. We are | |
784 | * only | |
785 | * concerned with non-deleted NHLFEs. | |
786 | */ | |
787 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
788 | /* Clear selection flags. */ | |
789 | UNSET_FLAG(nhlfe->flags, | |
790 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
791 | ||
792 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
793 | && nhlfe_nexthop_active(nhlfe)) { | |
794 | if (!best || (nhlfe->distance < best->distance)) | |
795 | best = nhlfe; | |
796 | } | |
797 | } | |
798 | ||
799 | lsp->best_nhlfe = best; | |
800 | if (!lsp->best_nhlfe) | |
801 | return; | |
802 | ||
803 | /* Mark best NHLFE as selected. */ | |
804 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
805 | ||
806 | /* | |
807 | * If best path exists, see if there is ECMP. While doing this, note if | |
808 | * a | |
809 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
810 | * still selected has a change or an installed entry is to be removed. | |
811 | */ | |
812 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
813 | int nh_chg, nh_sel, nh_inst; | |
814 | ||
815 | nexthop = nhlfe->nexthop; | |
816 | if (!nexthop) // unexpected | |
817 | continue; | |
818 | ||
819 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
820 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
821 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
822 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
823 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
824 | lsp->num_ecmp++; | |
825 | } | |
826 | ||
827 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
828 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
829 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
830 | nh_inst = | |
831 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
832 | ||
833 | if ((nh_sel && !nh_inst) | |
834 | || (nh_sel && nh_inst && nh_chg) | |
835 | || (nh_inst && !nh_sel)) | |
836 | changed = 1; | |
837 | } | |
838 | ||
839 | /* We have finished examining, clear changed flag. */ | |
840 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
841 | } | |
842 | ||
843 | if (changed) | |
844 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 845 | } |
846 | ||
847 | /* | |
848 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
849 | * process exit. | |
850 | */ | |
e3b78da8 | 851 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 852 | { |
d62a17ae | 853 | zebra_lsp_t *lsp; |
40c7bdb0 | 854 | |
e3b78da8 | 855 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 856 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 857 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 858 | } |
859 | ||
860 | /* | |
861 | * Schedule LSP forwarding entry for processing. Called upon changes | |
862 | * that may impact LSPs such as nexthop / connected route changes. | |
863 | */ | |
e3b78da8 | 864 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 865 | { |
d62a17ae | 866 | zebra_lsp_t *lsp; |
40c7bdb0 | 867 | |
e3b78da8 | 868 | lsp = (zebra_lsp_t *)bucket->data; |
0af35d90 | 869 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 870 | } |
871 | ||
872 | /* | |
873 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
874 | * any multipaths and update or delete from the kernel, as needed. | |
875 | */ | |
d62a17ae | 876 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
877 | { | |
878 | zebra_lsp_t *lsp; | |
879 | zebra_nhlfe_t *oldbest, *newbest; | |
880 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
881 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 882 | enum zebra_dplane_result res; |
d62a17ae | 883 | |
884 | lsp = (zebra_lsp_t *)data; | |
885 | if (!lsp) // unexpected | |
886 | return WQ_SUCCESS; | |
887 | ||
888 | oldbest = lsp->best_nhlfe; | |
889 | ||
890 | /* Select best NHLFE(s) */ | |
891 | lsp_select_best_nhlfe(lsp); | |
892 | ||
893 | newbest = lsp->best_nhlfe; | |
894 | ||
895 | if (IS_ZEBRA_DEBUG_MPLS) { | |
896 | if (oldbest) | |
897 | nhlfe2str(oldbest, buf, BUFSIZ); | |
898 | if (newbest) | |
899 | nhlfe2str(newbest, buf2, BUFSIZ); | |
900 | zlog_debug( | |
901 | "Process LSP in-label %u oldbest %s newbest %s " | |
902 | "flags 0x%x ecmp# %d", | |
903 | lsp->ile.in_label, oldbest ? buf : "NULL", | |
904 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
905 | } | |
906 | ||
907 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
908 | /* Not already installed */ | |
909 | if (newbest) { | |
2b63430c DS |
910 | |
911 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
912 | |
913 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 914 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
915 | /* Set 'installed' flag so we will know |
916 | * that an install is in-flight. | |
917 | */ | |
918 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
919 | ||
920 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 921 | break; |
ea1c14f6 | 922 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
923 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
924 | "LSP Install Failure: %u", | |
925 | lsp->ile.in_label); | |
7c5d0e18 | 926 | break; |
ea1c14f6 | 927 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
928 | zvrf->lsp_installs++; |
929 | break; | |
930 | } | |
d62a17ae | 931 | } |
932 | } else { | |
933 | /* Installed, may need an update and/or delete. */ | |
934 | if (!newbest) { | |
d37f4d6c MS |
935 | res = dplane_lsp_delete(lsp); |
936 | ||
937 | /* We do some of the lsp cleanup immediately for | |
938 | * deletes. | |
939 | */ | |
940 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
941 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 942 | |
d37f4d6c | 943 | switch (res) { |
ea1c14f6 | 944 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 945 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 946 | break; |
ea1c14f6 | 947 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
948 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
949 | "LSP Deletion Failure: %u", | |
950 | lsp->ile.in_label); | |
7c5d0e18 | 951 | break; |
ea1c14f6 | 952 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
953 | zvrf->lsp_removals++; |
954 | break; | |
955 | } | |
d62a17ae | 956 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
957 | zebra_nhlfe_t *nhlfe; |
958 | struct nexthop *nexthop; | |
2b63430c DS |
959 | |
960 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
961 | |
962 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 963 | * so we know an update is in-flight. |
d37f4d6c | 964 | */ |
e6d44ec7 | 965 | |
9fa38ec6 DS |
966 | /* |
967 | * Any NHLFE that was installed but is not | |
968 | * selected now needs to have its flags updated. | |
969 | */ | |
996c9314 LB |
970 | for (nhlfe = lsp->nhlfe_list; nhlfe; |
971 | nhlfe = nhlfe->next) { | |
9fa38ec6 DS |
972 | nexthop = nhlfe->nexthop; |
973 | if (!nexthop) | |
974 | continue; | |
975 | ||
976 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
977 | NHLFE_FLAG_INSTALLED) |
978 | && !CHECK_FLAG(nhlfe->flags, | |
979 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
980 | UNSET_FLAG(nhlfe->flags, |
981 | NHLFE_FLAG_INSTALLED); | |
982 | UNSET_FLAG(nexthop->flags, | |
983 | NEXTHOP_FLAG_FIB); | |
984 | } | |
985 | } | |
986 | ||
d37f4d6c | 987 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 988 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 989 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 990 | break; |
ea1c14f6 | 991 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
992 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
993 | "LSP Update Failure: %u", | |
994 | lsp->ile.in_label); | |
7c5d0e18 | 995 | break; |
ea1c14f6 | 996 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
997 | zvrf->lsp_installs++; |
998 | break; | |
999 | } | |
d62a17ae | 1000 | } |
1001 | } | |
1002 | ||
1003 | return WQ_SUCCESS; | |
40c7bdb0 | 1004 | } |
1005 | ||
1006 | ||
1007 | /* | |
1008 | * Callback upon processing completion of a LSP forwarding entry. | |
1009 | */ | |
d62a17ae | 1010 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1011 | { |
d62a17ae | 1012 | struct zebra_vrf *zvrf; |
1013 | zebra_lsp_t *lsp; | |
1014 | struct hash *lsp_table; | |
1015 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
40c7bdb0 | 1016 | |
d62a17ae | 1017 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1018 | assert(zvrf); | |
40c7bdb0 | 1019 | |
d62a17ae | 1020 | lsp_table = zvrf->lsp_table; |
1021 | if (!lsp_table) // unexpected | |
1022 | return; | |
40c7bdb0 | 1023 | |
d62a17ae | 1024 | lsp = (zebra_lsp_t *)data; |
1025 | if (!lsp) // unexpected | |
1026 | return; | |
40c7bdb0 | 1027 | |
d62a17ae | 1028 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1029 | * exist, | |
1030 | * delete LSP entry also. | |
1031 | */ | |
1032 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1033 | |
d62a17ae | 1034 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { |
1035 | nhlfe_next = nhlfe->next; | |
1036 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1037 | nhlfe_del(nhlfe); | |
1038 | } | |
40c7bdb0 | 1039 | |
ebab422a MS |
1040 | if (!lsp->nhlfe_list) |
1041 | lsp_free(lsp_table, &lsp); | |
40c7bdb0 | 1042 | } |
1043 | ||
1044 | /* | |
1045 | * Callback upon finishing the processing of all scheduled | |
1046 | * LSP forwarding entries. | |
1047 | */ | |
d62a17ae | 1048 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1049 | { |
d62a17ae | 1050 | /* Nothing to do for now. */ |
40c7bdb0 | 1051 | } |
1052 | ||
1053 | /* | |
1054 | * Add LSP forwarding entry to queue for subsequent processing. | |
1055 | */ | |
d62a17ae | 1056 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1057 | { |
d62a17ae | 1058 | /* If already scheduled, exit. */ |
1059 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1060 | return 0; | |
40c7bdb0 | 1061 | |
e2353ec2 | 1062 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1063 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1064 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1065 | return -1; |
1066 | } | |
33c32282 | 1067 | |
e2353ec2 | 1068 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1069 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1070 | return 0; | |
40c7bdb0 | 1071 | } |
1072 | ||
1073 | /* | |
1074 | * Callback to allocate LSP forwarding table entry. | |
1075 | */ | |
d62a17ae | 1076 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1077 | { |
d62a17ae | 1078 | const zebra_ile_t *ile = p; |
1079 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1080 | |
d62a17ae | 1081 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1082 | lsp->ile = *ile; | |
40c7bdb0 | 1083 | |
d62a17ae | 1084 | if (IS_ZEBRA_DEBUG_MPLS) |
1085 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1086 | |
d62a17ae | 1087 | return ((void *)lsp); |
40c7bdb0 | 1088 | } |
1089 | ||
ebab422a MS |
1090 | /* |
1091 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1092 | * free LSP object. | |
1093 | */ | |
1094 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1095 | { | |
1096 | zebra_lsp_t *lsp; | |
1097 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
1098 | ||
1099 | if (plsp == NULL || *plsp == NULL) | |
1100 | return; | |
1101 | ||
1102 | lsp = *plsp; | |
1103 | ||
1104 | if (IS_ZEBRA_DEBUG_MPLS) | |
1105 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1106 | lsp->ile.in_label, lsp->flags); | |
1107 | ||
1108 | /* Free nhlfes, if any. */ | |
1109 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
1110 | nhlfe_next = nhlfe->next; | |
1111 | ||
1112 | nhlfe_del(nhlfe); | |
1113 | } | |
1114 | ||
1115 | hash_release(lsp_table, &lsp->ile); | |
1116 | XFREE(MTYPE_LSP, lsp); | |
1117 | ||
1118 | *plsp = NULL; | |
1119 | } | |
1120 | ||
40c7bdb0 | 1121 | /* |
1122 | * Create printable string for NHLFE entry. | |
1123 | */ | |
d62a17ae | 1124 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1125 | { |
d62a17ae | 1126 | struct nexthop *nexthop; |
40c7bdb0 | 1127 | |
d62a17ae | 1128 | buf[0] = '\0'; |
1129 | nexthop = nhlfe->nexthop; | |
1130 | switch (nexthop->type) { | |
1131 | case NEXTHOP_TYPE_IPV4: | |
1132 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1133 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1134 | break; | |
1135 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1136 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1137 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1138 | break; | |
b9abd9ad DS |
1139 | case NEXTHOP_TYPE_IFINDEX: |
1140 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1141 | default: |
1142 | break; | |
1143 | } | |
40c7bdb0 | 1144 | |
d62a17ae | 1145 | return buf; |
40c7bdb0 | 1146 | } |
1147 | ||
1148 | /* | |
1149 | * Check if NHLFE matches with search info passed. | |
1150 | */ | |
d62a17ae | 1151 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1152 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1153 | { |
d62a17ae | 1154 | struct nexthop *nhop; |
1155 | int cmp = 1; | |
40c7bdb0 | 1156 | |
d62a17ae | 1157 | nhop = nhlfe->nexthop; |
1158 | if (!nhop) | |
1159 | return 1; | |
40c7bdb0 | 1160 | |
d62a17ae | 1161 | if (nhop->type != gtype) |
1162 | return 1; | |
40c7bdb0 | 1163 | |
d62a17ae | 1164 | switch (nhop->type) { |
1165 | case NEXTHOP_TYPE_IPV4: | |
1166 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1167 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1168 | sizeof(struct in_addr)); | |
1169 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1170 | cmp = !(nhop->ifindex == ifindex); | |
1171 | break; | |
1172 | case NEXTHOP_TYPE_IPV6: | |
1173 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1174 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1175 | sizeof(struct in6_addr)); | |
1176 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1177 | cmp = !(nhop->ifindex == ifindex); | |
1178 | break; | |
b9abd9ad DS |
1179 | case NEXTHOP_TYPE_IFINDEX: |
1180 | cmp = !(nhop->ifindex == ifindex); | |
1181 | break; | |
d62a17ae | 1182 | default: |
1183 | break; | |
1184 | } | |
40c7bdb0 | 1185 | |
d62a17ae | 1186 | return cmp; |
40c7bdb0 | 1187 | } |
1188 | ||
1189 | ||
1190 | /* | |
1191 | * Locate NHLFE that matches with passed info. | |
1192 | */ | |
d62a17ae | 1193 | static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
1194 | enum nexthop_types_t gtype, |
1195 | const union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1196 | { |
d62a17ae | 1197 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1198 | |
d62a17ae | 1199 | if (!lsp) |
1200 | return NULL; | |
40c7bdb0 | 1201 | |
d62a17ae | 1202 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { |
1203 | if (nhlfe->type != lsp_type) | |
1204 | continue; | |
1205 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1206 | break; | |
1207 | } | |
40c7bdb0 | 1208 | |
d62a17ae | 1209 | return nhlfe; |
40c7bdb0 | 1210 | } |
1211 | ||
1212 | /* | |
1213 | * Add NHLFE. Base entry must have been created and duplicate | |
1214 | * check done. | |
1215 | */ | |
d62a17ae | 1216 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
1217 | enum nexthop_types_t gtype, |
1218 | const union g_addr *gate, ifindex_t ifindex, | |
1219 | uint8_t num_labels, mpls_label_t labels[]) | |
d62a17ae | 1220 | { |
1221 | zebra_nhlfe_t *nhlfe; | |
1222 | struct nexthop *nexthop; | |
1223 | ||
1224 | if (!lsp) | |
1225 | return NULL; | |
1226 | ||
1227 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1228 | |
1229 | nhlfe->lsp = lsp; | |
1230 | nhlfe->type = lsp_type; | |
1231 | nhlfe->distance = lsp_distance(lsp_type); | |
1232 | ||
1233 | nexthop = nexthop_new(); | |
1234 | if (!nexthop) { | |
1235 | XFREE(MTYPE_NHLFE, nhlfe); | |
1236 | return NULL; | |
1237 | } | |
5065db0a | 1238 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1239 | |
4a7371e9 | 1240 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1241 | nexthop->type = gtype; |
1242 | switch (nexthop->type) { | |
1243 | case NEXTHOP_TYPE_IPV4: | |
1244 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1245 | nexthop->gate.ipv4 = gate->ipv4; | |
1246 | if (ifindex) | |
1247 | nexthop->ifindex = ifindex; | |
1248 | break; | |
1249 | case NEXTHOP_TYPE_IPV6: | |
1250 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1251 | nexthop->gate.ipv6 = gate->ipv6; | |
1252 | if (ifindex) | |
1253 | nexthop->ifindex = ifindex; | |
1254 | break; | |
b9abd9ad DS |
1255 | case NEXTHOP_TYPE_IFINDEX: |
1256 | nexthop->ifindex = ifindex; | |
1257 | break; | |
d62a17ae | 1258 | default: |
1259 | nexthop_free(nexthop); | |
1260 | XFREE(MTYPE_NHLFE, nhlfe); | |
1261 | return NULL; | |
d62a17ae | 1262 | } |
1263 | ||
1264 | nhlfe->nexthop = nexthop; | |
1265 | if (lsp->nhlfe_list) | |
1266 | lsp->nhlfe_list->prev = nhlfe; | |
1267 | nhlfe->next = lsp->nhlfe_list; | |
1268 | lsp->nhlfe_list = nhlfe; | |
1269 | ||
1270 | return nhlfe; | |
40c7bdb0 | 1271 | } |
1272 | ||
1273 | /* | |
1274 | * Delete NHLFE. Entry must be present on list. | |
1275 | */ | |
d62a17ae | 1276 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1277 | { |
d62a17ae | 1278 | zebra_lsp_t *lsp; |
40c7bdb0 | 1279 | |
d62a17ae | 1280 | if (!nhlfe) |
1281 | return -1; | |
40c7bdb0 | 1282 | |
d62a17ae | 1283 | lsp = nhlfe->lsp; |
1284 | if (!lsp) | |
1285 | return -1; | |
40c7bdb0 | 1286 | |
d62a17ae | 1287 | /* Free nexthop. */ |
1288 | if (nhlfe->nexthop) | |
1289 | nexthop_free(nhlfe->nexthop); | |
40c7bdb0 | 1290 | |
d62a17ae | 1291 | /* Unlink from LSP */ |
1292 | if (nhlfe->next) | |
1293 | nhlfe->next->prev = nhlfe->prev; | |
1294 | if (nhlfe->prev) | |
1295 | nhlfe->prev->next = nhlfe->next; | |
1296 | else | |
1297 | lsp->nhlfe_list = nhlfe->next; | |
40c7bdb0 | 1298 | |
d62a17ae | 1299 | if (nhlfe == lsp->best_nhlfe) |
1300 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1301 | |
d62a17ae | 1302 | XFREE(MTYPE_NHLFE, nhlfe); |
40c7bdb0 | 1303 | |
d62a17ae | 1304 | return 0; |
40c7bdb0 | 1305 | } |
1306 | ||
a64448ba DS |
1307 | /* |
1308 | * Update label for NHLFE entry. | |
1309 | */ | |
d62a17ae | 1310 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1311 | struct mpls_label_stack *nh_label) |
d62a17ae | 1312 | { |
1313 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1314 | } | |
1315 | ||
1316 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1317 | enum lsp_types_t type) | |
1318 | { | |
1319 | zebra_nhlfe_t *nhlfe, *nhlfe_next; | |
1320 | int schedule_lsp = 0; | |
1321 | char buf[BUFSIZ]; | |
1322 | ||
1323 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
1324 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) { | |
1325 | nhlfe_next = nhlfe->next; | |
1326 | ||
1327 | /* Skip non-static NHLFEs */ | |
1328 | if (nhlfe->type != type) | |
1329 | continue; | |
1330 | ||
1331 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1332 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1333 | zlog_debug( | |
1334 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1335 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1336 | } | |
1337 | ||
1338 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1339 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1340 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1341 | schedule_lsp = 1; | |
1342 | } else { | |
1343 | nhlfe_del(nhlfe); | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* Queue LSP for processing, if needed, else delete. */ | |
1348 | if (schedule_lsp) { | |
1349 | if (lsp_processq_add(lsp)) | |
1350 | return -1; | |
1351 | } else if (!lsp->nhlfe_list | |
ebab422a MS |
1352 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) |
1353 | lsp_free(lsp_table, &lsp); | |
d62a17ae | 1354 | |
1355 | return 0; | |
40c7bdb0 | 1356 | } |
1357 | ||
ce549947 RW |
1358 | /* |
1359 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1360 | * If no other NHLFEs exist, the entry would be deleted. | |
1361 | */ | |
d62a17ae | 1362 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1363 | mpls_label_t in_label) | |
ce549947 | 1364 | { |
d62a17ae | 1365 | struct hash *lsp_table; |
1366 | zebra_ile_t tmp_ile; | |
1367 | zebra_lsp_t *lsp; | |
ce549947 | 1368 | |
d62a17ae | 1369 | /* Lookup table. */ |
1370 | lsp_table = zvrf->lsp_table; | |
1371 | if (!lsp_table) | |
1372 | return -1; | |
ce549947 | 1373 | |
d62a17ae | 1374 | /* If entry is not present, exit. */ |
1375 | tmp_ile.in_label = in_label; | |
1376 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1377 | if (!lsp || !lsp->nhlfe_list) | |
1378 | return 0; | |
ce549947 | 1379 | |
d62a17ae | 1380 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1381 | } |
1382 | ||
d62a17ae | 1383 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1384 | { |
d62a17ae | 1385 | char buf[BUFSIZ]; |
1386 | json_object *json_nhlfe = NULL; | |
1387 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1388 | |
d62a17ae | 1389 | json_nhlfe = json_object_new_object(); |
1390 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1391 | json_object_int_add(json_nhlfe, "outLabel", | |
1392 | nexthop->nh_label->label[0]); | |
1393 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1394 | |
d62a17ae | 1395 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1396 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1397 | |
d62a17ae | 1398 | switch (nexthop->type) { |
1399 | case NEXTHOP_TYPE_IPV4: | |
1400 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1401 | json_object_string_add(json_nhlfe, "nexthop", | |
1402 | inet_ntoa(nexthop->gate.ipv4)); | |
1403 | break; | |
1404 | case NEXTHOP_TYPE_IPV6: | |
1405 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1406 | json_object_string_add( | |
1407 | json_nhlfe, "nexthop", | |
1408 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1409 | ||
1410 | if (nexthop->ifindex) | |
4a7371e9 DS |
1411 | json_object_string_add(json_nhlfe, "interface", |
1412 | ifindex2ifname(nexthop->ifindex, | |
1413 | nexthop->vrf_id)); | |
d62a17ae | 1414 | break; |
1415 | default: | |
1416 | break; | |
1417 | } | |
1418 | return json_nhlfe; | |
b78b820d | 1419 | } |
1420 | ||
3ab18ff2 | 1421 | /* |
1422 | * Print the NHLFE for a LSP forwarding entry. | |
1423 | */ | |
d62a17ae | 1424 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1425 | { | |
1426 | struct nexthop *nexthop; | |
1427 | char buf[BUFSIZ]; | |
1428 | ||
1429 | nexthop = nhlfe->nexthop; | |
1430 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1431 | return; | |
1432 | ||
1433 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1434 | nhlfe_type2str(nhlfe->type), | |
1435 | label2str(nexthop->nh_label->label[0], buf, BUFSIZ), | |
1436 | nhlfe->distance); | |
1437 | switch (nexthop->type) { | |
1438 | case NEXTHOP_TYPE_IPV4: | |
1439 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1440 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1441 | if (nexthop->ifindex) | |
1442 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1443 | ifindex2ifname(nexthop->ifindex, |
1444 | nexthop->vrf_id)); | |
d62a17ae | 1445 | break; |
1446 | case NEXTHOP_TYPE_IPV6: | |
1447 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1448 | vty_out(vty, " via %s", | |
1449 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1450 | if (nexthop->ifindex) | |
1451 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1452 | ifindex2ifname(nexthop->ifindex, |
1453 | nexthop->vrf_id)); | |
d62a17ae | 1454 | break; |
1455 | default: | |
1456 | break; | |
1457 | } | |
996c9314 LB |
1458 | vty_out(vty, "%s", |
1459 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1460 | : ""); | |
d62a17ae | 1461 | vty_out(vty, "\n"); |
3ab18ff2 | 1462 | } |
1463 | ||
1464 | /* | |
1465 | * Print an LSP forwarding entry. | |
1466 | */ | |
d62a17ae | 1467 | static void lsp_print(zebra_lsp_t *lsp, void *ctxt) |
3ab18ff2 | 1468 | { |
d62a17ae | 1469 | zebra_nhlfe_t *nhlfe; |
1470 | struct vty *vty; | |
3ab18ff2 | 1471 | |
d62a17ae | 1472 | vty = (struct vty *)ctxt; |
3ab18ff2 | 1473 | |
d62a17ae | 1474 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1475 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1476 | : ""); | |
3ab18ff2 | 1477 | |
d62a17ae | 1478 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1479 | nhlfe_print(nhlfe, vty); | |
3ab18ff2 | 1480 | } |
1481 | ||
1482 | /* | |
b78b820d | 1483 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1484 | */ |
d62a17ae | 1485 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1486 | { |
d62a17ae | 1487 | zebra_nhlfe_t *nhlfe = NULL; |
1488 | json_object *json = json_object_new_object(); | |
1489 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1490 | |
d62a17ae | 1491 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1492 | |
d62a17ae | 1493 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1494 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1495 | |
d62a17ae | 1496 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) |
1497 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); | |
b78b820d | 1498 | |
d62a17ae | 1499 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1500 | return json; | |
b78b820d | 1501 | } |
1502 | ||
1503 | ||
1504 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1505 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1506 | { |
d62a17ae | 1507 | unsigned int i; |
e3b78da8 | 1508 | struct hash_bucket *hb; |
d62a17ae | 1509 | struct list *sorted_list = list_new(); |
b78b820d | 1510 | |
d62a17ae | 1511 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1512 | |
d62a17ae | 1513 | for (i = 0; i < hash->size; i++) |
1514 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1515 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1516 | |
d62a17ae | 1517 | return sorted_list; |
3ab18ff2 | 1518 | } |
1519 | ||
7758e3f3 | 1520 | /* |
b78b820d | 1521 | * Compare two LSPs based on their label values. |
7758e3f3 | 1522 | */ |
e4a1ec74 | 1523 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1524 | { |
d62a17ae | 1525 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1526 | return -1; | |
7758e3f3 | 1527 | |
d62a17ae | 1528 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1529 | return 1; | |
7758e3f3 | 1530 | |
d62a17ae | 1531 | return 0; |
7758e3f3 | 1532 | } |
1533 | ||
1534 | /* | |
1535 | * Callback to allocate static LSP. | |
1536 | */ | |
d62a17ae | 1537 | static void *slsp_alloc(void *p) |
7758e3f3 | 1538 | { |
d62a17ae | 1539 | const zebra_ile_t *ile = p; |
1540 | zebra_slsp_t *slsp; | |
7758e3f3 | 1541 | |
d62a17ae | 1542 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1543 | slsp->ile = *ile; | |
1544 | return ((void *)slsp); | |
7758e3f3 | 1545 | } |
1546 | ||
b78b820d | 1547 | /* |
1548 | * Compare two static LSPs based on their label values. | |
1549 | */ | |
e4a1ec74 | 1550 | static int slsp_cmp(const zebra_slsp_t *slsp1, const zebra_slsp_t *slsp2) |
b78b820d | 1551 | { |
d62a17ae | 1552 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1553 | return -1; | |
b78b820d | 1554 | |
d62a17ae | 1555 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1556 | return 1; | |
b78b820d | 1557 | |
d62a17ae | 1558 | return 0; |
b78b820d | 1559 | } |
1560 | ||
7758e3f3 | 1561 | /* |
1562 | * Check if static NHLFE matches with search info passed. | |
1563 | */ | |
d62a17ae | 1564 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1565 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1566 | { |
d62a17ae | 1567 | int cmp = 1; |
7758e3f3 | 1568 | |
d62a17ae | 1569 | if (snhlfe->gtype != gtype) |
1570 | return 1; | |
7758e3f3 | 1571 | |
d62a17ae | 1572 | switch (snhlfe->gtype) { |
1573 | case NEXTHOP_TYPE_IPV4: | |
1574 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1575 | sizeof(struct in_addr)); | |
1576 | break; | |
1577 | case NEXTHOP_TYPE_IPV6: | |
1578 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1579 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1580 | sizeof(struct in6_addr)); | |
1581 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1582 | cmp = !(snhlfe->ifindex == ifindex); | |
1583 | break; | |
1584 | default: | |
1585 | break; | |
1586 | } | |
7758e3f3 | 1587 | |
d62a17ae | 1588 | return cmp; |
7758e3f3 | 1589 | } |
1590 | ||
1591 | /* | |
1592 | * Locate static NHLFE that matches with passed info. | |
1593 | */ | |
d62a17ae | 1594 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1595 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1596 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1597 | { |
d62a17ae | 1598 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1599 | |
d62a17ae | 1600 | if (!slsp) |
1601 | return NULL; | |
7758e3f3 | 1602 | |
d62a17ae | 1603 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe->next) { |
1604 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) | |
1605 | break; | |
1606 | } | |
7758e3f3 | 1607 | |
d62a17ae | 1608 | return snhlfe; |
7758e3f3 | 1609 | } |
1610 | ||
1611 | ||
1612 | /* | |
1613 | * Add static NHLFE. Base LSP config entry must have been created | |
1614 | * and duplicate check done. | |
1615 | */ | |
d62a17ae | 1616 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1617 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1618 | const union g_addr *gate, ifindex_t ifindex, |
d62a17ae | 1619 | mpls_label_t out_label) |
1620 | { | |
1621 | zebra_snhlfe_t *snhlfe; | |
1622 | ||
1623 | if (!slsp) | |
1624 | return NULL; | |
1625 | ||
1626 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1627 | snhlfe->slsp = slsp; | |
1628 | snhlfe->out_label = out_label; | |
1629 | snhlfe->gtype = gtype; | |
1630 | switch (gtype) { | |
1631 | case NEXTHOP_TYPE_IPV4: | |
1632 | snhlfe->gate.ipv4 = gate->ipv4; | |
1633 | break; | |
1634 | case NEXTHOP_TYPE_IPV6: | |
1635 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1636 | snhlfe->gate.ipv6 = gate->ipv6; | |
1637 | if (ifindex) | |
1638 | snhlfe->ifindex = ifindex; | |
1639 | break; | |
1640 | default: | |
1641 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1642 | return NULL; | |
1643 | } | |
1644 | ||
1645 | if (slsp->snhlfe_list) | |
1646 | slsp->snhlfe_list->prev = snhlfe; | |
1647 | snhlfe->next = slsp->snhlfe_list; | |
1648 | slsp->snhlfe_list = snhlfe; | |
1649 | ||
1650 | return snhlfe; | |
7758e3f3 | 1651 | } |
1652 | ||
1653 | /* | |
1654 | * Delete static NHLFE. Entry must be present on list. | |
1655 | */ | |
d62a17ae | 1656 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1657 | { |
d62a17ae | 1658 | zebra_slsp_t *slsp; |
7758e3f3 | 1659 | |
d62a17ae | 1660 | if (!snhlfe) |
1661 | return -1; | |
7758e3f3 | 1662 | |
d62a17ae | 1663 | slsp = snhlfe->slsp; |
1664 | if (!slsp) | |
1665 | return -1; | |
7758e3f3 | 1666 | |
d62a17ae | 1667 | if (snhlfe->next) |
1668 | snhlfe->next->prev = snhlfe->prev; | |
1669 | if (snhlfe->prev) | |
1670 | snhlfe->prev->next = snhlfe->next; | |
1671 | else | |
1672 | slsp->snhlfe_list = snhlfe->next; | |
7758e3f3 | 1673 | |
d62a17ae | 1674 | snhlfe->prev = snhlfe->next = NULL; |
0a22ddfb | 1675 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); |
d62a17ae | 1676 | XFREE(MTYPE_SNHLFE, snhlfe); |
7758e3f3 | 1677 | |
d62a17ae | 1678 | return 0; |
7758e3f3 | 1679 | } |
1680 | ||
1681 | /* | |
1682 | * Delete all static NHLFE entries for this LSP (in label). | |
1683 | */ | |
d62a17ae | 1684 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1685 | { |
d62a17ae | 1686 | zebra_snhlfe_t *snhlfe, *snhlfe_next; |
7758e3f3 | 1687 | |
d62a17ae | 1688 | if (!slsp) |
1689 | return -1; | |
7758e3f3 | 1690 | |
d62a17ae | 1691 | for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe_next) { |
1692 | snhlfe_next = snhlfe->next; | |
1693 | snhlfe_del(snhlfe); | |
1694 | } | |
7758e3f3 | 1695 | |
d62a17ae | 1696 | return 0; |
7758e3f3 | 1697 | } |
1698 | ||
1699 | /* | |
1700 | * Create printable string for NHLFE configuration. | |
1701 | */ | |
d62a17ae | 1702 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1703 | { |
d62a17ae | 1704 | buf[0] = '\0'; |
1705 | switch (snhlfe->gtype) { | |
1706 | case NEXTHOP_TYPE_IPV4: | |
1707 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1708 | break; | |
1709 | case NEXTHOP_TYPE_IPV6: | |
1710 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1711 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1712 | if (snhlfe->ifindex) | |
eab4a5c2 QY |
1713 | strlcat(buf, |
1714 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT), | |
1715 | size); | |
d62a17ae | 1716 | break; |
1717 | default: | |
1718 | break; | |
1719 | } | |
7758e3f3 | 1720 | |
d62a17ae | 1721 | return buf; |
7758e3f3 | 1722 | } |
1723 | ||
40c7bdb0 | 1724 | /* |
1725 | * Initialize work queue for processing changed LSPs. | |
1726 | */ | |
2561d12e | 1727 | static int mpls_processq_init(void) |
40c7bdb0 | 1728 | { |
e2353ec2 DS |
1729 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1730 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1731 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1732 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1733 | return -1; |
1734 | } | |
40c7bdb0 | 1735 | |
e2353ec2 DS |
1736 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1737 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1738 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1739 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1740 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1741 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1742 | |
d62a17ae | 1743 | return 0; |
40c7bdb0 | 1744 | } |
1745 | ||
7758e3f3 | 1746 | |
7758e3f3 | 1747 | /* Public functions */ |
1748 | ||
d37f4d6c MS |
1749 | /* |
1750 | * Process LSP update results from zebra dataplane. | |
1751 | */ | |
1752 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1753 | { | |
1754 | struct zebra_vrf *zvrf; | |
1755 | zebra_ile_t tmp_ile; | |
1756 | struct hash *lsp_table; | |
1757 | zebra_lsp_t *lsp; | |
1758 | zebra_nhlfe_t *nhlfe; | |
1759 | struct nexthop *nexthop; | |
1760 | enum dplane_op_e op; | |
8841f96e | 1761 | enum zebra_dplane_result status; |
d37f4d6c MS |
1762 | |
1763 | op = dplane_ctx_get_op(ctx); | |
1764 | status = dplane_ctx_get_status(ctx); | |
1765 | ||
1766 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1767 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1768 | ctx, dplane_op2str(op), | |
1769 | dplane_ctx_get_in_label(ctx), | |
1770 | dplane_res2str(status)); | |
1771 | ||
1772 | switch (op) { | |
1773 | case DPLANE_OP_LSP_INSTALL: | |
1774 | case DPLANE_OP_LSP_UPDATE: | |
1775 | /* Look for zebra LSP object */ | |
1776 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1777 | if (zvrf == NULL) | |
1778 | break; | |
1779 | ||
1780 | lsp_table = zvrf->lsp_table; | |
1781 | ||
1782 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1783 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1784 | if (lsp == NULL) { | |
1785 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1786 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1787 | ctx, dplane_ctx_get_in_label(ctx)); | |
1788 | break; | |
1789 | } | |
1790 | ||
1791 | /* TODO -- Confirm that this result is still 'current' */ | |
1792 | ||
8841f96e | 1793 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1794 | /* Update zebra object */ |
1795 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1796 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
1797 | nhlfe = nhlfe->next) { | |
1798 | nexthop = nhlfe->nexthop; | |
1799 | if (!nexthop) | |
1800 | continue; | |
1801 | ||
1802 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1803 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1804 | } | |
1805 | } else { | |
1806 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1807 | clear_nhlfe_installed(lsp); | |
1808 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1809 | "LSP Install Failure: in-label %u", | |
1810 | lsp->ile.in_label); | |
1811 | } | |
1812 | ||
1813 | break; | |
1814 | ||
1815 | case DPLANE_OP_LSP_DELETE: | |
3fd385c6 DS |
1816 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) |
1817 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, | |
1818 | "LSP Deletion Failure: in-label %u", | |
1819 | dplane_ctx_get_in_label(ctx)); | |
d37f4d6c MS |
1820 | break; |
1821 | ||
1822 | default: | |
1823 | break; | |
1824 | ||
1825 | } /* Switch */ | |
1826 | ||
1827 | dplane_ctx_fini(&ctx); | |
1828 | } | |
1829 | ||
104e3ad9 MS |
1830 | /* |
1831 | * Process async dplane notifications. | |
1832 | */ | |
1833 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
1834 | { | |
1835 | struct zebra_vrf *zvrf; | |
1836 | zebra_ile_t tmp_ile; | |
1837 | struct hash *lsp_table; | |
1838 | zebra_lsp_t *lsp; | |
1839 | zebra_nhlfe_t *nhlfe; | |
1840 | const zebra_nhlfe_t *ctx_nhlfe; | |
1841 | struct nexthop *nexthop; | |
1842 | const struct nexthop *ctx_nexthop; | |
1843 | int start_count = 0, end_count = 0; /* Installed counts */ | |
188a00e0 | 1844 | bool changed_p = false; |
104e3ad9 MS |
1845 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1846 | ||
1847 | if (is_debug) | |
1848 | zlog_debug("LSP dplane notif, in-label %u", | |
1849 | dplane_ctx_get_in_label(ctx)); | |
1850 | ||
1851 | /* Look for zebra LSP object */ | |
1852 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1853 | if (zvrf == NULL) | |
1854 | goto done; | |
1855 | ||
1856 | lsp_table = zvrf->lsp_table; | |
1857 | ||
1858 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1859 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1860 | if (lsp == NULL) { | |
1861 | if (is_debug) | |
1862 | zlog_debug("dplane LSP notif: in-label %u not found", | |
1863 | dplane_ctx_get_in_label(ctx)); | |
1864 | goto done; | |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * The dataplane/forwarding plane is notifying zebra about the state | |
188a00e0 MS |
1869 | * of the nexthops associated with this LSP. First, we take a |
1870 | * pre-scan pass to determine whether the LSP has transitioned | |
1871 | * from installed -> uninstalled. In that case, we need to have | |
1872 | * the existing state of the LSP objects available before making | |
1873 | * any changes. | |
104e3ad9 MS |
1874 | */ |
1875 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1876 | char buf[NEXTHOP_STRLEN]; | |
1877 | ||
1878 | nexthop = nhlfe->nexthop; | |
1879 | if (!nexthop) | |
1880 | continue; | |
1881 | ||
1882 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
1883 | start_count++; | |
1884 | ||
1885 | ctx_nexthop = NULL; | |
1886 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1887 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1888 | ||
1889 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1890 | if (!ctx_nexthop) | |
1891 | continue; | |
1892 | ||
1893 | if ((ctx_nexthop->type == nexthop->type) && | |
1894 | nexthop_same(ctx_nexthop, nexthop)) { | |
1895 | /* Matched */ | |
1896 | break; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | if (is_debug) | |
1901 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1902 | ||
1903 | if (ctx_nhlfe && ctx_nexthop) { | |
1904 | if (is_debug) { | |
1905 | const char *tstr = ""; | |
1906 | ||
1907 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
1908 | NHLFE_FLAG_INSTALLED)) | |
1909 | tstr = "not "; | |
1910 | ||
1911 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
1912 | buf, tstr); | |
1913 | } | |
1914 | ||
188a00e0 | 1915 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
1916 | if (CHECK_FLAG(ctx_nhlfe->flags, |
1917 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
1918 | |
1919 | if (!CHECK_FLAG(nhlfe->flags, | |
1920 | NHLFE_FLAG_INSTALLED)) | |
1921 | changed_p = true; | |
104e3ad9 MS |
1922 | |
1923 | /* Update counter */ | |
1924 | end_count++; | |
188a00e0 MS |
1925 | } else { |
1926 | ||
1927 | if (CHECK_FLAG(nhlfe->flags, | |
1928 | NHLFE_FLAG_INSTALLED)) | |
1929 | changed_p = true; | |
1930 | } | |
1931 | ||
1932 | } else { | |
1933 | /* Not mentioned in lfib set -> uninstalled */ | |
1934 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
1935 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
1936 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
1937 | changed_p = true; | |
1938 | } | |
1939 | ||
1940 | if (is_debug) | |
1941 | zlog_debug("LSP dplane notif: no match, nh %s", | |
1942 | buf); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | if (is_debug) | |
1947 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
1948 | start_count, end_count, | |
1949 | changed_p ? ", changed" : ""); | |
1950 | ||
1951 | /* | |
1952 | * Has the LSP become uninstalled? | |
1953 | */ | |
1954 | if (start_count > 0 && end_count == 0) { | |
1955 | /* Inform other lfibs */ | |
1956 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
1957 | } | |
1958 | ||
1959 | /* | |
1960 | * Now we take a second pass and bring the zebra | |
1961 | * nexthop state into sync with the forwarding-plane state. | |
1962 | */ | |
1963 | for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) { | |
1964 | char buf[NEXTHOP_STRLEN]; | |
1965 | ||
1966 | nexthop = nhlfe->nexthop; | |
1967 | if (!nexthop) | |
1968 | continue; | |
1969 | ||
1970 | ctx_nexthop = NULL; | |
1971 | for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx); | |
1972 | ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) { | |
1973 | ||
1974 | ctx_nexthop = ctx_nhlfe->nexthop; | |
1975 | if (!ctx_nexthop) | |
1976 | continue; | |
1977 | ||
1978 | if ((ctx_nexthop->type == nexthop->type) && | |
1979 | nexthop_same(ctx_nexthop, nexthop)) { | |
1980 | /* Matched */ | |
1981 | break; | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | if (is_debug) | |
1986 | nexthop2str(nexthop, buf, sizeof(buf)); | |
1987 | ||
1988 | if (ctx_nhlfe && ctx_nexthop) { | |
1989 | ||
1990 | /* Bring zebra nhlfe install state into sync */ | |
1991 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
1992 | NHLFE_FLAG_INSTALLED)) { | |
1993 | ||
1994 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1995 | ||
1996 | } else { | |
1997 | ||
104e3ad9 | 1998 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
188a00e0 | 1999 | } |
104e3ad9 MS |
2000 | |
2001 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
2002 | NEXTHOP_FLAG_FIB)) { |
2003 | SET_FLAG(nhlfe->nexthop->flags, | |
2004 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2005 | SET_FLAG(nhlfe->nexthop->flags, |
2006 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2007 | } else { |
2008 | UNSET_FLAG(nhlfe->nexthop->flags, | |
2009 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2010 | UNSET_FLAG(nhlfe->nexthop->flags, |
2011 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2012 | } |
2013 | ||
104e3ad9 MS |
2014 | } else { |
2015 | /* Not mentioned in lfib set -> uninstalled */ | |
188a00e0 | 2016 | |
104e3ad9 MS |
2017 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
2018 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
188a00e0 | 2019 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2020 | } |
2021 | } | |
2022 | ||
188a00e0 | 2023 | if (end_count > 0) { |
104e3ad9 | 2024 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2025 | |
2026 | if (changed_p) | |
2027 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2028 | ||
2029 | } else { | |
104e3ad9 MS |
2030 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2031 | clear_nhlfe_installed(lsp); | |
2032 | } | |
2033 | ||
2034 | done: | |
2035 | dplane_ctx_fini(&ctx); | |
2036 | } | |
2037 | ||
a64448ba DS |
2038 | /* |
2039 | * Install dynamic LSP entry. | |
2040 | */ | |
d62a17ae | 2041 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2042 | struct route_entry *re) | |
a64448ba | 2043 | { |
d62a17ae | 2044 | struct route_table *table; |
2045 | zebra_fec_t *fec; | |
a64448ba | 2046 | |
d62a17ae | 2047 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2048 | if (!table) | |
2049 | return -1; | |
a64448ba | 2050 | |
d62a17ae | 2051 | /* See if there is a configured label binding for this FEC. */ |
2052 | fec = fec_find(table, &rn->p); | |
2053 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2054 | return 0; | |
a64448ba | 2055 | |
d62a17ae | 2056 | /* We cannot install a label forwarding entry if local label is the |
2057 | * implicit-null label. | |
2058 | */ | |
70e98a7f | 2059 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2060 | return 0; |
a64448ba | 2061 | |
d62a17ae | 2062 | if (lsp_install(zvrf, fec->label, rn, re)) |
2063 | return -1; | |
a64448ba | 2064 | |
d62a17ae | 2065 | return 0; |
a64448ba DS |
2066 | } |
2067 | ||
2068 | /* | |
2069 | * Uninstall dynamic LSP entry, if any. | |
2070 | */ | |
d62a17ae | 2071 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2072 | struct route_entry *re) | |
a64448ba | 2073 | { |
d62a17ae | 2074 | struct route_table *table; |
2075 | zebra_fec_t *fec; | |
a64448ba | 2076 | |
d62a17ae | 2077 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2078 | if (!table) | |
2079 | return -1; | |
a64448ba | 2080 | |
d62a17ae | 2081 | /* See if there is a configured label binding for this FEC. */ |
2082 | fec = fec_find(table, &rn->p); | |
2083 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2084 | return 0; | |
a64448ba | 2085 | |
d62a17ae | 2086 | /* Uninstall always removes all dynamic NHLFEs. */ |
2087 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2088 | } |
2089 | ||
d4cb23d7 MS |
2090 | /* |
2091 | * Add an NHLFE to an LSP, return the newly-added object | |
2092 | */ | |
2093 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2094 | enum lsp_types_t lsp_type, | |
2095 | enum nexthop_types_t gtype, | |
2096 | union g_addr *gate, | |
2097 | ifindex_t ifindex, | |
5065db0a RW |
2098 | uint8_t num_labels, |
2099 | mpls_label_t out_labels[]) | |
d4cb23d7 MS |
2100 | { |
2101 | /* Just a public pass-through to the internal implementation */ | |
5065db0a RW |
2102 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2103 | out_labels); | |
d4cb23d7 MS |
2104 | } |
2105 | ||
2106 | /* | |
2107 | * Free an allocated NHLFE | |
2108 | */ | |
2109 | void zebra_mpls_nhlfe_del(zebra_nhlfe_t *nhlfe) | |
2110 | { | |
2111 | /* Just a pass-through to the internal implementation */ | |
2112 | nhlfe_del(nhlfe); | |
2113 | } | |
2114 | ||
5aba114a DS |
2115 | /* |
2116 | * Registration from a client for the label binding for a FEC. If a binding | |
2117 | * already exists, it is informed to the client. | |
28d58fd7 | 2118 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2119 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2120 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2121 | * is acceptable. If no label index then just register the specified label. |
2122 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2123 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2124 | */ |
d62a17ae | 2125 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2126 | uint32_t label, uint32_t label_index, |
2127 | struct zserv *client) | |
d62a17ae | 2128 | { |
2129 | struct route_table *table; | |
2130 | zebra_fec_t *fec; | |
2131 | char buf[BUFSIZ]; | |
57592a53 AD |
2132 | bool new_client; |
2133 | bool label_change = false; | |
d7c0a89a | 2134 | uint32_t old_label; |
57592a53 AD |
2135 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2136 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2137 | |
2138 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2139 | if (!table) | |
2140 | return -1; | |
2141 | ||
2142 | if (IS_ZEBRA_DEBUG_MPLS) | |
2143 | prefix2str(p, buf, BUFSIZ); | |
2144 | ||
57592a53 AD |
2145 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2146 | flog_err( | |
2147 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2148 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2149 | buf, label, label_index, | |
2150 | zebra_route_string(client->proto)); | |
2151 | return -1; | |
2152 | } | |
2153 | ||
d62a17ae | 2154 | /* Locate FEC */ |
2155 | fec = fec_find(table, p); | |
2156 | if (!fec) { | |
57592a53 | 2157 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2158 | if (!fec) { |
af4c2728 | 2159 | flog_err( |
e914ccbe | 2160 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2161 | "Failed to add FEC %s upon register, client %s", |
2162 | buf, zebra_route_string(client->proto)); | |
2163 | return -1; | |
2164 | } | |
2165 | ||
2166 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2167 | new_client = true; |
d62a17ae | 2168 | } else { |
57592a53 AD |
2169 | /* Check if the FEC has been statically defined in the config */ |
2170 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2171 | /* Client may register same FEC with different label index. */ |
2172 | new_client = | |
2173 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2174 | if (!new_client && fec->label_index == label_index |
2175 | && fec->label == label) | |
d62a17ae | 2176 | /* Duplicate register */ |
2177 | return 0; | |
2178 | ||
57592a53 | 2179 | /* Save current label, update the FEC */ |
d62a17ae | 2180 | old_label = fec->label; |
2181 | fec->label_index = label_index; | |
2182 | } | |
2183 | ||
2184 | if (new_client) | |
2185 | listnode_add(fec->client_list, client); | |
2186 | ||
2187 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2188 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2189 | have_label_index ? " index" : "", | |
2190 | have_label_index ? label_index : label, | |
2191 | new_client ? "registered" : "updated", | |
2192 | zebra_route_string(client->proto), | |
2193 | is_configured_fec | |
2194 | ? ", but using statically configured label" | |
2195 | : ""); | |
2196 | ||
2197 | /* If not a statically configured FEC, derive the local label | |
2198 | * from label index or use the provided label | |
d62a17ae | 2199 | */ |
57592a53 AD |
2200 | if (!is_configured_fec) { |
2201 | if (have_label_index) | |
2202 | fec_derive_label_from_index(zvrf, fec); | |
2203 | else | |
2204 | fec->label = label; | |
d62a17ae | 2205 | |
2206 | /* If no label change, exit. */ | |
2207 | if (fec->label == old_label) | |
2208 | return 0; | |
2209 | ||
57592a53 | 2210 | label_change = true; |
d62a17ae | 2211 | } |
2212 | ||
2213 | /* If new client or label change, update client and install or uninstall | |
2214 | * label forwarding entry as needed. | |
2215 | */ | |
2216 | /* Inform client of label, if needed. */ | |
2217 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2218 | if (IS_ZEBRA_DEBUG_MPLS) | |
2219 | zlog_debug("Update client label %u", fec->label); | |
2220 | fec_send(fec, client); | |
2221 | } | |
2222 | ||
2223 | if (new_client || label_change) | |
2224 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2225 | ||
2226 | return 0; | |
5aba114a DS |
2227 | } |
2228 | ||
2229 | /* | |
2230 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2231 | * itself is deleted if no other registered clients exist and there is no | |
2232 | * label bound to the FEC. | |
2233 | */ | |
d62a17ae | 2234 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2235 | struct zserv *client) | |
5aba114a | 2236 | { |
d62a17ae | 2237 | struct route_table *table; |
2238 | zebra_fec_t *fec; | |
2239 | char buf[BUFSIZ]; | |
5aba114a | 2240 | |
d62a17ae | 2241 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2242 | if (!table) | |
2243 | return -1; | |
5aba114a | 2244 | |
d62a17ae | 2245 | if (IS_ZEBRA_DEBUG_MPLS) |
2246 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2247 | |
d62a17ae | 2248 | fec = fec_find(table, p); |
2249 | if (!fec) { | |
2250 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2251 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
2252 | "Failed to find FEC %s upon unregister, client %s", |
2253 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 2254 | return -1; |
2255 | } | |
5aba114a | 2256 | |
d62a17ae | 2257 | listnode_delete(fec->client_list, client); |
2258 | ||
2259 | if (IS_ZEBRA_DEBUG_MPLS) | |
2260 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2261 | zebra_route_string(client->proto)); | |
2262 | ||
2263 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2264 | * deleting, see if any LSP needs to be uninstalled. | |
2265 | */ | |
2266 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2267 | && list_isempty(fec->client_list)) { | |
2268 | mpls_label_t old_label = fec->label; | |
2269 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2270 | fec_change_update_lsp(zvrf, fec, old_label); | |
2271 | fec_del(fec); | |
2272 | } | |
5aba114a | 2273 | |
d62a17ae | 2274 | return 0; |
5aba114a DS |
2275 | } |
2276 | ||
2277 | /* | |
2278 | * Cleanup any FECs registered by this client. | |
2279 | */ | |
453844ab | 2280 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2281 | { |
453844ab | 2282 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2283 | struct route_node *rn; |
2284 | zebra_fec_t *fec; | |
2285 | struct listnode *node; | |
2286 | struct zserv *fec_client; | |
2287 | int af; | |
2288 | ||
2289 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2290 | if (zvrf->fec_table[af] == NULL) | |
2291 | continue; | |
2292 | ||
2293 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2294 | rn = route_next(rn)) { | |
2295 | fec = rn->info; | |
2296 | if (!fec || list_isempty(fec->client_list)) | |
2297 | continue; | |
2298 | ||
2299 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2300 | fec_client)) { | |
2301 | if (fec_client == client) { | |
2302 | listnode_delete(fec->client_list, | |
2303 | fec_client); | |
2304 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2305 | && list_isempty(fec->client_list)) | |
2306 | fec_del(fec); | |
2307 | break; | |
2308 | } | |
2309 | } | |
2310 | } | |
2311 | } | |
5aba114a | 2312 | |
d62a17ae | 2313 | return 0; |
5aba114a DS |
2314 | } |
2315 | ||
651105b5 RW |
2316 | struct lsp_uninstall_args { |
2317 | struct hash *lsp_table; | |
2318 | enum lsp_types_t type; | |
2319 | }; | |
2320 | ||
2321 | /* | |
2322 | * Cleanup MPLS labels registered by this client. | |
2323 | */ | |
2324 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2325 | { | |
2326 | struct vrf *vrf; | |
2327 | struct zebra_vrf *zvrf; | |
2328 | ||
2329 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2330 | struct lsp_uninstall_args args; | |
2331 | ||
2332 | zvrf = vrf->info; | |
2333 | if (!zvrf) | |
2334 | continue; | |
2335 | ||
2336 | /* Cleanup LSPs. */ | |
2337 | args.lsp_table = zvrf->lsp_table; | |
2338 | args.type = lsp_type_from_re_type(client->proto); | |
2339 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2340 | &args); | |
2341 | ||
2342 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2343 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2344 | lsp_type_from_re_type(client->proto)); | |
2345 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2346 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2347 | } |
2348 | ||
2349 | return 0; | |
2350 | } | |
2351 | ||
f31e084c DS |
2352 | /* |
2353 | * Return FEC (if any) to which this label is bound. | |
2354 | * Note: Only works for per-prefix binding and when the label is not | |
2355 | * implicit-null. | |
2356 | * TODO: Currently walks entire table, can optimize later with another | |
2357 | * hash.. | |
2358 | */ | |
d62a17ae | 2359 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2360 | mpls_label_t label) | |
2361 | { | |
2362 | struct route_node *rn; | |
2363 | zebra_fec_t *fec; | |
2364 | int af; | |
2365 | ||
2366 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2367 | if (zvrf->fec_table[af] == NULL) | |
2368 | continue; | |
2369 | ||
2370 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2371 | rn = route_next(rn)) { | |
2372 | if (!rn->info) | |
2373 | continue; | |
2374 | fec = rn->info; | |
2375 | if (fec->label == label) | |
2376 | return fec; | |
2377 | } | |
2378 | } | |
f31e084c | 2379 | |
d62a17ae | 2380 | return NULL; |
f31e084c DS |
2381 | } |
2382 | ||
2383 | /* | |
2384 | * Inform if specified label is currently bound to a FEC or not. | |
2385 | */ | |
d62a17ae | 2386 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2387 | { |
d62a17ae | 2388 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2389 | } |
2390 | ||
2391 | /* | |
5aba114a | 2392 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2393 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2394 | * label forwarding entry. | |
9d303b37 | 2395 | */ |
d62a17ae | 2396 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2397 | mpls_label_t in_label) | |
2398 | { | |
2399 | struct route_table *table; | |
2400 | zebra_fec_t *fec; | |
2401 | char buf[BUFSIZ]; | |
2402 | mpls_label_t old_label; | |
2403 | int ret = 0; | |
2404 | ||
2405 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2406 | if (!table) | |
2407 | return -1; | |
2408 | ||
2409 | if (IS_ZEBRA_DEBUG_MPLS) | |
2410 | prefix2str(p, buf, BUFSIZ); | |
2411 | ||
2412 | /* Update existing FEC or create a new one. */ | |
2413 | fec = fec_find(table, p); | |
2414 | if (!fec) { | |
2415 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2416 | MPLS_INVALID_LABEL_INDEX); | |
2417 | if (!fec) { | |
2418 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2419 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2420 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2421 | return -1; |
2422 | } | |
2423 | ||
2424 | if (IS_ZEBRA_DEBUG_MPLS) | |
2425 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2426 | } else { | |
2427 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2428 | if (fec->label == in_label) | |
2429 | /* Duplicate config */ | |
2430 | return 0; | |
2431 | ||
2432 | /* Label change, update clients. */ | |
2433 | old_label = fec->label; | |
2434 | if (IS_ZEBRA_DEBUG_MPLS) | |
2435 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2436 | ||
2437 | fec->label = in_label; | |
2438 | fec_update_clients(fec); | |
2439 | ||
2440 | /* Update label forwarding entries appropriately */ | |
2441 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2442 | } | |
2443 | ||
2444 | return ret; | |
f31e084c DS |
2445 | } |
2446 | ||
2447 | /* | |
5aba114a DS |
2448 | * Remove static FEC to label binding. If there are no clients registered |
2449 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2450 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2451 | * client may need to be updated with derived label. | |
f31e084c | 2452 | */ |
d62a17ae | 2453 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2454 | { | |
2455 | struct route_table *table; | |
2456 | zebra_fec_t *fec; | |
2457 | mpls_label_t old_label; | |
2458 | char buf[BUFSIZ]; | |
2459 | ||
2460 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2461 | if (!table) | |
2462 | return -1; | |
2463 | ||
2464 | fec = fec_find(table, p); | |
2465 | if (!fec) { | |
2466 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2467 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2468 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2469 | return -1; |
2470 | } | |
2471 | ||
2472 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2473 | prefix2str(p, buf, BUFSIZ); | |
57592a53 AD |
2474 | zlog_debug("Delete fec %s label %u label index %u", buf, |
2475 | fec->label, fec->label_index); | |
d62a17ae | 2476 | } |
2477 | ||
2478 | old_label = fec->label; | |
2479 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2480 | fec->label = MPLS_INVALID_LABEL; | |
2481 | ||
2482 | /* If no client exists, just delete the FEC. */ | |
2483 | if (list_isempty(fec->client_list)) { | |
2484 | fec_del(fec); | |
2485 | return 0; | |
2486 | } | |
2487 | ||
2488 | /* Derive the local label (from label index) or reset it. */ | |
2489 | fec_derive_label_from_index(zvrf, fec); | |
2490 | ||
2491 | /* If there is a label change, update clients. */ | |
2492 | if (fec->label == old_label) | |
2493 | return 0; | |
2494 | fec_update_clients(fec); | |
2495 | ||
2496 | /* Update label forwarding entries appropriately */ | |
2497 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2498 | } |
2499 | ||
2500 | /* | |
2501 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2502 | */ | |
d62a17ae | 2503 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2504 | { |
d62a17ae | 2505 | struct route_node *rn; |
2506 | int af; | |
2507 | zebra_fec_t *fec; | |
2508 | char buf[BUFSIZ]; | |
2509 | int write = 0; | |
f31e084c | 2510 | |
d62a17ae | 2511 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2512 | if (zvrf->fec_table[af] == NULL) | |
2513 | continue; | |
f31e084c | 2514 | |
d62a17ae | 2515 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2516 | rn = route_next(rn)) { | |
2517 | if (!rn->info) | |
2518 | continue; | |
f31e084c | 2519 | |
d62a17ae | 2520 | char lstr[BUFSIZ]; |
2521 | fec = rn->info; | |
f31e084c | 2522 | |
d62a17ae | 2523 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2524 | continue; | |
f31e084c | 2525 | |
d62a17ae | 2526 | write = 1; |
2527 | prefix2str(&rn->p, buf, BUFSIZ); | |
2528 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2529 | label2str(fec->label, lstr, BUFSIZ)); | |
2530 | } | |
2531 | } | |
f31e084c | 2532 | |
d62a17ae | 2533 | return write; |
f31e084c DS |
2534 | } |
2535 | ||
2536 | /* | |
2537 | * Display MPLS FEC to label binding (VTY command handler). | |
2538 | */ | |
d62a17ae | 2539 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2540 | { |
d62a17ae | 2541 | struct route_node *rn; |
2542 | int af; | |
f31e084c | 2543 | |
d62a17ae | 2544 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2545 | if (zvrf->fec_table[af] == NULL) | |
2546 | continue; | |
f31e084c | 2547 | |
d62a17ae | 2548 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2549 | rn = route_next(rn)) { | |
2550 | if (!rn->info) | |
2551 | continue; | |
2552 | fec_print(rn->info, vty); | |
2553 | } | |
2554 | } | |
f31e084c DS |
2555 | } |
2556 | ||
2557 | /* | |
2558 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2559 | */ | |
d62a17ae | 2560 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2561 | struct prefix *p) | |
f31e084c | 2562 | { |
d62a17ae | 2563 | struct route_table *table; |
2564 | struct route_node *rn; | |
f31e084c | 2565 | |
d62a17ae | 2566 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2567 | if (!table) | |
2568 | return; | |
f31e084c | 2569 | |
d62a17ae | 2570 | apply_mask(p); |
2571 | rn = route_node_lookup(table, p); | |
2572 | if (!rn) | |
2573 | return; | |
f31e084c | 2574 | |
d62a17ae | 2575 | route_unlock_node(rn); |
2576 | if (!rn->info) | |
2577 | return; | |
f31e084c | 2578 | |
d62a17ae | 2579 | fec_print(rn->info, vty); |
f31e084c DS |
2580 | } |
2581 | ||
19474c9c SW |
2582 | static void mpls_zebra_nhg_update(struct route_entry *re, afi_t afi, |
2583 | struct nexthop_group *new_grp) | |
2584 | { | |
2585 | struct nhg_hash_entry *nhe; | |
2586 | ||
2587 | nhe = zebra_nhg_rib_find(0, new_grp, afi); | |
2588 | ||
5463ce26 | 2589 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2590 | } |
2591 | ||
8f77d0ee DS |
2592 | static bool mpls_ftn_update_nexthop(int add, struct nexthop *nexthop, |
2593 | enum lsp_types_t type, mpls_label_t label) | |
2594 | { | |
2595 | if (add && nexthop->nh_label_type == ZEBRA_LSP_NONE) | |
2596 | nexthop_add_labels(nexthop, type, 1, &label); | |
2597 | else if (!add && nexthop->nh_label_type == type) | |
2598 | nexthop_del_labels(nexthop); | |
2599 | else | |
2600 | return false; | |
2601 | ||
2602 | return true; | |
2603 | } | |
2604 | ||
ce549947 RW |
2605 | /* |
2606 | * Install/uninstall a FEC-To-NHLFE (FTN) binding. | |
2607 | */ | |
d62a17ae | 2608 | int mpls_ftn_update(int add, struct zebra_vrf *zvrf, enum lsp_types_t type, |
2609 | struct prefix *prefix, enum nexthop_types_t gtype, | |
e132dea0 RW |
2610 | union g_addr *gate, ifindex_t ifindex, uint8_t route_type, |
2611 | unsigned short route_instance, mpls_label_t out_label) | |
d62a17ae | 2612 | { |
2613 | struct route_table *table; | |
2614 | struct route_node *rn; | |
2615 | struct route_entry *re; | |
2616 | struct nexthop *nexthop; | |
da137142 | 2617 | struct nexthop_group new_grp = {}; |
8f77d0ee | 2618 | bool found; |
da137142 | 2619 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2620 | |
2621 | /* Lookup table. */ | |
da137142 | 2622 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2623 | if (!table) |
2624 | return -1; | |
2625 | ||
2626 | /* Lookup existing route */ | |
2627 | rn = route_node_get(table, prefix); | |
a2addae8 | 2628 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2629 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2630 | continue; | |
e132dea0 | 2631 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2632 | break; |
88d88a9c | 2633 | } |
ce549947 | 2634 | |
d62a17ae | 2635 | if (re == NULL) |
2636 | return -1; | |
2637 | ||
da137142 SW |
2638 | /* |
2639 | * Copy over current nexthops into a temporary group. | |
2640 | * We can't just change the values here since we are hashing | |
2641 | * on labels. We need to create a whole new group | |
2642 | */ | |
c415d895 | 2643 | nexthop_group_copy(&new_grp, &(re->nhe->nhg)); |
da137142 | 2644 | |
8f77d0ee | 2645 | found = false; |
da137142 | 2646 | for (nexthop = new_grp.nexthop; nexthop; nexthop = nexthop->next) { |
d62a17ae | 2647 | switch (nexthop->type) { |
2648 | case NEXTHOP_TYPE_IPV4: | |
2649 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
2650 | if (gtype != NEXTHOP_TYPE_IPV4 | |
2651 | && gtype != NEXTHOP_TYPE_IPV4_IFINDEX) | |
2652 | continue; | |
2653 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, &gate->ipv4)) | |
2654 | continue; | |
2655 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
2656 | && nexthop->ifindex != ifindex) | |
2657 | continue; | |
8f77d0ee DS |
2658 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2659 | out_label)) | |
da137142 | 2660 | break; |
8f77d0ee DS |
2661 | found = true; |
2662 | break; | |
d62a17ae | 2663 | case NEXTHOP_TYPE_IPV6: |
2664 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2665 | if (gtype != NEXTHOP_TYPE_IPV6 | |
2666 | && gtype != NEXTHOP_TYPE_IPV6_IFINDEX) | |
2667 | continue; | |
2668 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, &gate->ipv6)) | |
2669 | continue; | |
2670 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
2671 | && nexthop->ifindex != ifindex) | |
2672 | continue; | |
8f77d0ee DS |
2673 | if (!mpls_ftn_update_nexthop(add, nexthop, type, |
2674 | out_label)) | |
da137142 | 2675 | break; |
8f77d0ee DS |
2676 | found = true; |
2677 | break; | |
d62a17ae | 2678 | default: |
2679 | break; | |
2680 | } | |
2681 | } | |
d62a17ae | 2682 | |
da137142 | 2683 | if (found) { |
da137142 SW |
2684 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); |
2685 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
19474c9c SW |
2686 | |
2687 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
2688 | ||
da137142 SW |
2689 | rib_queue_add(rn); |
2690 | } | |
2691 | ||
2692 | nexthops_free(new_grp.nexthop); | |
2693 | ||
fec211ad | 2694 | return found ? 0 : -1; |
ce549947 RW |
2695 | } |
2696 | ||
ea6b290b RW |
2697 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2698 | struct prefix *prefix, uint8_t route_type, | |
2699 | unsigned short route_instance) | |
2700 | { | |
2701 | struct route_table *table; | |
2702 | struct route_node *rn; | |
2703 | struct route_entry *re; | |
2704 | struct nexthop *nexthop; | |
19474c9c SW |
2705 | struct nexthop_group new_grp = {}; |
2706 | afi_t afi = family2afi(prefix->family); | |
ea6b290b RW |
2707 | |
2708 | /* Lookup table. */ | |
19474c9c | 2709 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
ea6b290b RW |
2710 | if (!table) |
2711 | return -1; | |
2712 | ||
2713 | /* Lookup existing route */ | |
2714 | rn = route_node_get(table, prefix); | |
2715 | RNODE_FOREACH_RE (rn, re) { | |
2716 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2717 | continue; | |
2718 | if (re->type == route_type && re->instance == route_instance) | |
2719 | break; | |
2720 | } | |
2721 | if (re == NULL) | |
2722 | return -1; | |
2723 | ||
c415d895 | 2724 | nexthop_group_copy(&new_grp, &(re->nhe->nhg)); |
19474c9c SW |
2725 | |
2726 | for (nexthop = new_grp.nexthop; nexthop; nexthop = nexthop->next) | |
ea6b290b RW |
2727 | nexthop_del_labels(nexthop); |
2728 | ||
2729 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2730 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
19474c9c SW |
2731 | |
2732 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
2733 | ||
2734 | nexthops_free(new_grp.nexthop); | |
2735 | ||
ea6b290b RW |
2736 | rib_queue_add(rn); |
2737 | ||
2738 | return 0; | |
2739 | } | |
2740 | ||
ce549947 RW |
2741 | /* |
2742 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
2743 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
2744 | * the out-label for an existing NHLFE (update case). | |
2745 | */ | |
d62a17ae | 2746 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, |
5065db0a RW |
2747 | mpls_label_t in_label, uint8_t num_out_labels, |
2748 | mpls_label_t out_labels[], enum nexthop_types_t gtype, | |
e4a1ec74 | 2749 | const union g_addr *gate, ifindex_t ifindex) |
d62a17ae | 2750 | { |
2751 | struct hash *lsp_table; | |
2752 | zebra_ile_t tmp_ile; | |
2753 | zebra_lsp_t *lsp; | |
2754 | zebra_nhlfe_t *nhlfe; | |
2755 | char buf[BUFSIZ]; | |
2756 | ||
2757 | /* Lookup table. */ | |
2758 | lsp_table = zvrf->lsp_table; | |
2759 | if (!lsp_table) | |
2760 | return -1; | |
2761 | ||
e4a1ec74 | 2762 | /* Find or create LSP object */ |
d62a17ae | 2763 | tmp_ile.in_label = in_label; |
2764 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2765 | if (!lsp) | |
2766 | return -1; | |
e4a1ec74 | 2767 | |
d62a17ae | 2768 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); |
2769 | if (nhlfe) { | |
2770 | struct nexthop *nh = nhlfe->nexthop; | |
2771 | ||
2772 | assert(nh); | |
2773 | assert(nh->nh_label); | |
2774 | ||
2775 | /* Clear deleted flag (in case it was set) */ | |
2776 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
5065db0a RW |
2777 | if (nh->nh_label->num_labels == num_out_labels |
2778 | && !memcmp(nh->nh_label->label, out_labels, | |
2779 | sizeof(mpls_label_t) * num_out_labels)) | |
d62a17ae | 2780 | /* No change */ |
2781 | return 0; | |
2782 | ||
2783 | if (IS_ZEBRA_DEBUG_MPLS) { | |
e4a1ec74 MS |
2784 | char buf2[MPLS_LABEL_STRLEN]; |
2785 | char buf3[MPLS_LABEL_STRLEN]; | |
5065db0a | 2786 | |
d62a17ae | 2787 | nhlfe2str(nhlfe, buf, BUFSIZ); |
5065db0a RW |
2788 | mpls_label2str(num_out_labels, out_labels, buf2, |
2789 | sizeof(buf2), 0); | |
2790 | mpls_label2str(nh->nh_label->num_labels, | |
2791 | nh->nh_label->label, buf3, sizeof(buf3), | |
2792 | 0); | |
2793 | ||
d62a17ae | 2794 | zlog_debug( |
2795 | "LSP in-label %u type %d nexthop %s " | |
5065db0a RW |
2796 | "out-label(s) changed to %s (old %s)", |
2797 | in_label, type, buf, buf2, buf3); | |
d62a17ae | 2798 | } |
2799 | ||
5065db0a RW |
2800 | /* Update out label(s), trigger processing. */ |
2801 | if (nh->nh_label->num_labels == num_out_labels) | |
2802 | memcpy(nh->nh_label->label, out_labels, | |
2803 | sizeof(mpls_label_t) * num_out_labels); | |
2804 | else { | |
2805 | nexthop_del_labels(nh); | |
2806 | nexthop_add_labels(nh, type, num_out_labels, | |
2807 | out_labels); | |
2808 | } | |
d62a17ae | 2809 | } else { |
2810 | /* Add LSP entry to this nexthop */ | |
5065db0a RW |
2811 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
2812 | num_out_labels, out_labels); | |
d62a17ae | 2813 | if (!nhlfe) |
2814 | return -1; | |
2815 | ||
2816 | if (IS_ZEBRA_DEBUG_MPLS) { | |
5065db0a RW |
2817 | char buf2[BUFSIZ]; |
2818 | ||
d62a17ae | 2819 | nhlfe2str(nhlfe, buf, BUFSIZ); |
5065db0a RW |
2820 | mpls_label2str(num_out_labels, out_labels, buf2, |
2821 | sizeof(buf2), 0); | |
2822 | ||
d62a17ae | 2823 | zlog_debug( |
2824 | "Add LSP in-label %u type %d nexthop %s " | |
5065db0a RW |
2825 | "out-label(s) %s", |
2826 | in_label, type, buf, buf2); | |
d62a17ae | 2827 | } |
2828 | ||
2829 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
2830 | } | |
2831 | ||
2832 | /* Mark NHLFE, queue LSP for processing. */ | |
2833 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2834 | if (lsp_processq_add(lsp)) | |
2835 | return -1; | |
2836 | ||
2837 | return 0; | |
ce549947 RW |
2838 | } |
2839 | ||
2840 | /* | |
2841 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
2842 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
2843 | */ | |
d62a17ae | 2844 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2845 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
e4a1ec74 | 2846 | const union g_addr *gate, ifindex_t ifindex) |
d62a17ae | 2847 | { |
2848 | struct hash *lsp_table; | |
2849 | zebra_ile_t tmp_ile; | |
2850 | zebra_lsp_t *lsp; | |
2851 | zebra_nhlfe_t *nhlfe; | |
2852 | char buf[BUFSIZ]; | |
2853 | ||
2854 | /* Lookup table. */ | |
2855 | lsp_table = zvrf->lsp_table; | |
2856 | if (!lsp_table) | |
2857 | return -1; | |
2858 | ||
2859 | /* If entry is not present, exit. */ | |
2860 | tmp_ile.in_label = in_label; | |
2861 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2862 | if (!lsp) | |
2863 | return 0; | |
2864 | nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex); | |
2865 | if (!nhlfe) | |
2866 | return 0; | |
2867 | ||
2868 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2869 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
2870 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
2871 | in_label, type, buf, nhlfe->flags); | |
2872 | } | |
2873 | ||
2874 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
2875 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
2876 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
2877 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
2878 | if (lsp_processq_add(lsp)) | |
2879 | return -1; | |
2880 | } else { | |
2881 | nhlfe_del(nhlfe); | |
2882 | ||
2883 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
2884 | if (!lsp->nhlfe_list | |
ebab422a MS |
2885 | && !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) |
2886 | lsp_free(lsp_table, &lsp); | |
d62a17ae | 2887 | |
d62a17ae | 2888 | } |
2889 | return 0; | |
ce549947 RW |
2890 | } |
2891 | ||
ea6b290b RW |
2892 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2893 | mpls_label_t in_label) | |
2894 | { | |
2895 | struct hash *lsp_table; | |
2896 | zebra_ile_t tmp_ile; | |
2897 | zebra_lsp_t *lsp; | |
2898 | ||
2899 | /* Lookup table. */ | |
2900 | lsp_table = zvrf->lsp_table; | |
2901 | if (!lsp_table) | |
2902 | return -1; | |
2903 | ||
2904 | /* If entry is not present, exit. */ | |
2905 | tmp_ile.in_label = in_label; | |
2906 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
2907 | if (!lsp) | |
2908 | return 0; | |
2909 | ||
2910 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
2911 | } | |
2912 | ||
ce549947 | 2913 | /* |
651105b5 | 2914 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
2915 | * If no other NHLFEs exist, the entry would be deleted. |
2916 | */ | |
651105b5 | 2917 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 2918 | { |
651105b5 | 2919 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 2920 | zebra_lsp_t *lsp; |
2921 | struct hash *lsp_table; | |
ce549947 | 2922 | |
e3b78da8 | 2923 | lsp = (zebra_lsp_t *)bucket->data; |
9ea660be | 2924 | if (!lsp->nhlfe_list) |
d62a17ae | 2925 | return; |
ce549947 | 2926 | |
651105b5 | 2927 | lsp_table = args->lsp_table; |
d62a17ae | 2928 | if (!lsp_table) |
2929 | return; | |
ce549947 | 2930 | |
651105b5 | 2931 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
2932 | } |
2933 | ||
2934 | /* | |
651105b5 RW |
2935 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
2936 | * LSP type. | |
ce549947 | 2937 | */ |
651105b5 RW |
2938 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
2939 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 2940 | { |
2941 | struct route_table *table; | |
2942 | struct route_node *rn; | |
2943 | struct route_entry *re; | |
2944 | struct nexthop *nexthop; | |
2945 | int update; | |
2946 | ||
2947 | /* Process routes of interested address-families. */ | |
2948 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2949 | if (!table) | |
2950 | return; | |
2951 | ||
2952 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
2953 | update = 0; | |
a2addae8 | 2954 | RNODE_FOREACH_RE (rn, re) { |
da137142 | 2955 | struct nexthop_group new_grp = {}; |
da137142 | 2956 | |
c415d895 | 2957 | nexthop_group_copy(&new_grp, &(re->nhe->nhg)); |
da137142 SW |
2958 | |
2959 | for (nexthop = new_grp.nexthop; nexthop; | |
407c87a6 | 2960 | nexthop = nexthop->next) { |
651105b5 | 2961 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
2962 | continue; |
2963 | ||
d62a17ae | 2964 | nexthop_del_labels(nexthop); |
2965 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2966 | SET_FLAG(re->status, | |
332ad713 | 2967 | ROUTE_ENTRY_LABELS_CHANGED); |
d62a17ae | 2968 | update = 1; |
2969 | } | |
da137142 | 2970 | |
19474c9c SW |
2971 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
2972 | mpls_zebra_nhg_update(re, afi, &new_grp); | |
da137142 SW |
2973 | |
2974 | nexthops_free(new_grp.nexthop); | |
407c87a6 | 2975 | } |
d62a17ae | 2976 | |
2977 | if (update) | |
2978 | rib_queue_add(rn); | |
2979 | } | |
ce549947 RW |
2980 | } |
2981 | ||
1c1cf002 | 2982 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 2983 | /* |
2984 | * Check that the label values used in LSP creation are consistent. The | |
2985 | * main criteria is that if there is ECMP, the label operation must still | |
2986 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
2987 | * to current HW restrictions. | |
2988 | */ | |
d62a17ae | 2989 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
2990 | mpls_label_t in_label, | |
2991 | mpls_label_t out_label, | |
2992 | enum nexthop_types_t gtype, | |
2993 | union g_addr *gate, ifindex_t ifindex) | |
2994 | { | |
2995 | struct hash *slsp_table; | |
2996 | zebra_ile_t tmp_ile; | |
2997 | zebra_slsp_t *slsp; | |
2998 | zebra_snhlfe_t *snhlfe; | |
2999 | ||
3000 | /* Lookup table. */ | |
3001 | slsp_table = zvrf->slsp_table; | |
3002 | if (!slsp_table) | |
3003 | return 0; | |
3004 | ||
3005 | /* If entry is not present, exit. */ | |
3006 | tmp_ile.in_label = in_label; | |
3007 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3008 | if (!slsp) | |
3009 | return 1; | |
3010 | ||
3011 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3012 | if (snhlfe) { | |
3013 | if (snhlfe->out_label == out_label) | |
3014 | return 1; | |
3015 | ||
3016 | /* If not only NHLFE, cannot allow label change. */ | |
3017 | if (snhlfe != slsp->snhlfe_list || snhlfe->next) | |
3018 | return 0; | |
3019 | } else { | |
3020 | /* If other NHLFEs exist, label operation must match. */ | |
3021 | if (slsp->snhlfe_list) { | |
3022 | int cur_op, new_op; | |
3023 | ||
3024 | cur_op = (slsp->snhlfe_list->out_label | |
70e98a7f DS |
3025 | == MPLS_LABEL_IMPLICIT_NULL); |
3026 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); | |
d62a17ae | 3027 | if (cur_op != new_op) |
3028 | return 0; | |
3029 | } | |
3030 | } | |
3031 | ||
3032 | /* Label values are good. */ | |
3033 | return 1; | |
7758e3f3 | 3034 | } |
1c1cf002 | 3035 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3036 | |
3037 | /* | |
3038 | * Add static LSP entry. This may be the first entry for this incoming label | |
3039 | * or an additional nexthop; an existing entry may also have outgoing label | |
3040 | * changed. | |
3041 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3042 | * NHLFEs). | |
3043 | */ | |
d62a17ae | 3044 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3045 | mpls_label_t out_label, | |
3046 | enum nexthop_types_t gtype, union g_addr *gate, | |
3047 | ifindex_t ifindex) | |
3048 | { | |
3049 | struct hash *slsp_table; | |
3050 | zebra_ile_t tmp_ile; | |
3051 | zebra_slsp_t *slsp; | |
3052 | zebra_snhlfe_t *snhlfe; | |
3053 | char buf[BUFSIZ]; | |
3054 | ||
3055 | /* Lookup table. */ | |
3056 | slsp_table = zvrf->slsp_table; | |
3057 | if (!slsp_table) | |
3058 | return -1; | |
3059 | ||
e4a1ec74 | 3060 | /* Find or create LSP. */ |
d62a17ae | 3061 | tmp_ile.in_label = in_label; |
3062 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
3063 | if (!slsp) | |
3064 | return -1; | |
e4a1ec74 | 3065 | |
d62a17ae | 3066 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); |
3067 | if (snhlfe) { | |
3068 | if (snhlfe->out_label == out_label) | |
3069 | /* No change */ | |
3070 | return 0; | |
3071 | ||
3072 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3073 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3074 | zlog_debug( | |
3075 | "Upd static LSP in-label %u nexthop %s " | |
3076 | "out-label %u (old %u)", | |
3077 | in_label, buf, out_label, snhlfe->out_label); | |
3078 | } | |
3079 | snhlfe->out_label = out_label; | |
3080 | } else { | |
3081 | /* Add static LSP entry to this nexthop */ | |
3082 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
3083 | if (!snhlfe) | |
3084 | return -1; | |
3085 | ||
3086 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3087 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3088 | zlog_debug( | |
3089 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3090 | in_label, buf, out_label); | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3095 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3096 | gtype, gate, ifindex)) | |
d62a17ae | 3097 | return -1; |
3098 | ||
3099 | return 0; | |
7758e3f3 | 3100 | } |
3101 | ||
3102 | /* | |
3103 | * Delete static LSP entry. This may be the delete of one particular | |
3104 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3105 | * all NHLFEs). | |
3106 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3107 | * LSP configuration. | |
3108 | */ | |
d62a17ae | 3109 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3110 | enum nexthop_types_t gtype, union g_addr *gate, | |
3111 | ifindex_t ifindex) | |
3112 | { | |
3113 | struct hash *slsp_table; | |
3114 | zebra_ile_t tmp_ile; | |
3115 | zebra_slsp_t *slsp; | |
3116 | zebra_snhlfe_t *snhlfe; | |
3117 | ||
3118 | /* Lookup table. */ | |
3119 | slsp_table = zvrf->slsp_table; | |
3120 | if (!slsp_table) | |
3121 | return -1; | |
3122 | ||
3123 | /* If entry is not present, exit. */ | |
3124 | tmp_ile.in_label = in_label; | |
3125 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3126 | if (!slsp) | |
3127 | return 0; | |
3128 | ||
3129 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3130 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3131 | if (IS_ZEBRA_DEBUG_MPLS) | |
3132 | zlog_debug("Del static LSP in-label %u", in_label); | |
3133 | ||
3134 | /* Uninstall entire LSP from the main table. */ | |
3135 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3136 | ||
3137 | /* Delete all static NHLFEs */ | |
3138 | snhlfe_del_all(slsp); | |
3139 | } else { | |
3140 | /* Find specific NHLFE, exit if not found. */ | |
3141 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3142 | if (!snhlfe) | |
3143 | return 0; | |
3144 | ||
3145 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3146 | char buf[BUFSIZ]; | |
3147 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3148 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
3149 | in_label, buf); | |
3150 | } | |
3151 | ||
3152 | /* Uninstall LSP from the main table. */ | |
3153 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
3154 | gate, ifindex); | |
3155 | ||
3156 | /* Delete static LSP NHLFE */ | |
3157 | snhlfe_del(snhlfe); | |
3158 | } | |
3159 | ||
3160 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
3161 | * above. */ | |
3162 | if (!slsp->snhlfe_list) { | |
3163 | slsp = hash_release(slsp_table, &tmp_ile); | |
0a22ddfb | 3164 | XFREE(MTYPE_SLSP, slsp); |
d62a17ae | 3165 | } |
3166 | ||
3167 | return 0; | |
7758e3f3 | 3168 | } |
3169 | ||
40c7bdb0 | 3170 | /* |
3171 | * Schedule all MPLS label forwarding entries for processing. | |
3172 | * Called upon changes that may affect one or more of them such as | |
3173 | * interface or nexthop state changes. | |
3174 | */ | |
d62a17ae | 3175 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3176 | { |
d62a17ae | 3177 | if (!zvrf) |
3178 | return; | |
3179 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3180 | } |
3181 | ||
3ab18ff2 | 3182 | /* |
3183 | * Display MPLS label forwarding table for a specific LSP | |
3184 | * (VTY command handler). | |
3185 | */ | |
d62a17ae | 3186 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3187 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3188 | { |
d62a17ae | 3189 | struct hash *lsp_table; |
3190 | zebra_lsp_t *lsp; | |
3191 | zebra_ile_t tmp_ile; | |
3192 | json_object *json = NULL; | |
3ab18ff2 | 3193 | |
d62a17ae | 3194 | /* Lookup table. */ |
3195 | lsp_table = zvrf->lsp_table; | |
3196 | if (!lsp_table) | |
3197 | return; | |
3ab18ff2 | 3198 | |
d62a17ae | 3199 | /* If entry is not present, exit. */ |
3200 | tmp_ile.in_label = label; | |
3201 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3202 | if (!lsp) | |
3203 | return; | |
3ab18ff2 | 3204 | |
d62a17ae | 3205 | if (use_json) { |
3206 | json = lsp_json(lsp); | |
9d303b37 DL |
3207 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3208 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3209 | json_object_free(json); |
3210 | } else | |
3211 | lsp_print(lsp, (void *)vty); | |
3ab18ff2 | 3212 | } |
3213 | ||
3214 | /* | |
3215 | * Display MPLS label forwarding table (VTY command handler). | |
3216 | */ | |
d62a17ae | 3217 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3218 | bool use_json) |
d62a17ae | 3219 | { |
3220 | char buf[BUFSIZ]; | |
3221 | json_object *json = NULL; | |
3222 | zebra_lsp_t *lsp = NULL; | |
3223 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3224 | struct listnode *node = NULL; |
3225 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3226 | ||
3227 | if (use_json) { | |
3228 | json = json_object_new_object(); | |
3229 | ||
3230 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3231 | json_object_object_add( | |
3232 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
3233 | lsp_json(lsp)); | |
3234 | ||
9d303b37 DL |
3235 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3236 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3237 | json_object_free(json); |
3238 | } else { | |
a971aeb6 RW |
3239 | struct ttable *tt; |
3240 | ||
3241 | /* Prepare table. */ | |
3242 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3243 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3244 | tt->style.cell.rpad = 2; | |
3245 | tt->style.corner = '+'; | |
3246 | ttable_restyle(tt); | |
3247 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3248 | |
3249 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
3250 | for (nhlfe = lsp->nhlfe_list; nhlfe; | |
3251 | nhlfe = nhlfe->next) { | |
a971aeb6 RW |
3252 | struct nexthop *nexthop; |
3253 | const char *out_label_str; | |
3254 | char nh_buf[NEXTHOP_STRLEN]; | |
3255 | ||
d62a17ae | 3256 | nexthop = nhlfe->nexthop; |
3257 | ||
3258 | switch (nexthop->type) { | |
996c9314 | 3259 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3260 | struct zebra_ns *zns; |
b9abd9ad DS |
3261 | struct interface *ifp; |
3262 | ||
86f07f44 PG |
3263 | zns = zebra_ns_lookup(NS_DEFAULT); |
3264 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3265 | zns, nexthop->ifindex); |
3266 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3267 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3268 | break; |
3269 | } | |
d62a17ae | 3270 | case NEXTHOP_TYPE_IPV4: |
3271 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3272 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3273 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3274 | break; |
3275 | case NEXTHOP_TYPE_IPV6: | |
3276 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3277 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3278 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3279 | break; |
3280 | default: | |
3281 | break; | |
3282 | } | |
3283 | ||
b9abd9ad | 3284 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3285 | out_label_str = mpls_label2str( |
3286 | nexthop->nh_label->num_labels, | |
3287 | &nexthop->nh_label->label[0], | |
3288 | buf, BUFSIZ, 1); | |
b9abd9ad | 3289 | else |
a971aeb6 RW |
3290 | out_label_str = "-"; |
3291 | ||
3292 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3293 | lsp->ile.in_label, | |
3294 | nhlfe_type2str(nhlfe->type), | |
3295 | nh_buf, out_label_str); | |
d62a17ae | 3296 | } |
3297 | } | |
3298 | ||
a971aeb6 RW |
3299 | /* Dump the generated table. */ |
3300 | if (tt->nrows > 1) { | |
3301 | char *table = ttable_dump(tt, "\n"); | |
3302 | vty_out(vty, "%s\n", table); | |
3303 | XFREE(MTYPE_TMP, table); | |
3304 | } | |
3305 | ttable_del(tt); | |
d62a17ae | 3306 | } |
3307 | ||
6a154c88 | 3308 | list_delete(&lsp_list); |
3ab18ff2 | 3309 | } |
3310 | ||
7758e3f3 | 3311 | /* |
3312 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3313 | */ | |
d62a17ae | 3314 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3315 | { | |
3316 | zebra_slsp_t *slsp; | |
3317 | zebra_snhlfe_t *snhlfe; | |
3318 | struct listnode *node; | |
3319 | struct list *slsp_list = | |
3320 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
3321 | ||
3322 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
3323 | for (snhlfe = slsp->snhlfe_list; snhlfe; | |
3324 | snhlfe = snhlfe->next) { | |
0af35d90 | 3325 | char buf[BUFSIZ]; |
d62a17ae | 3326 | char lstr[30]; |
3327 | ||
0af35d90 | 3328 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 3329 | switch (snhlfe->out_label) { |
70e98a7f DS |
3330 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3331 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3332 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3333 | break; | |
70e98a7f | 3334 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3335 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3336 | break; | |
3337 | default: | |
3338 | sprintf(lstr, "%u", snhlfe->out_label); | |
3339 | break; | |
3340 | } | |
3341 | ||
3342 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
3343 | buf, lstr); | |
3344 | } | |
3345 | } | |
b78b820d | 3346 | |
6a154c88 | 3347 | list_delete(&slsp_list); |
d62a17ae | 3348 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3349 | } |
3350 | ||
1b6d5c7e VV |
3351 | /* |
3352 | * Add/update global label block. | |
3353 | */ | |
d7c0a89a QY |
3354 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3355 | uint32_t end_label) | |
1b6d5c7e | 3356 | { |
d62a17ae | 3357 | zvrf->mpls_srgb.start_label = start_label; |
3358 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3359 | |
d62a17ae | 3360 | /* Evaluate registered FECs to see if any get a label or not. */ |
3361 | fec_evaluate(zvrf); | |
3362 | return 0; | |
1b6d5c7e VV |
3363 | } |
3364 | ||
3365 | /* | |
3366 | * Delete global label block. | |
3367 | */ | |
d62a17ae | 3368 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3369 | { |
d62a17ae | 3370 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3371 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3372 | |
d62a17ae | 3373 | /* Process registered FECs to clear their local label, if needed. */ |
3374 | fec_evaluate(zvrf); | |
3375 | return 0; | |
1b6d5c7e VV |
3376 | } |
3377 | ||
3378 | /* | |
3379 | * Display MPLS global label block configuration (VTY command handler). | |
3380 | */ | |
d62a17ae | 3381 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3382 | { |
d62a17ae | 3383 | if (zvrf->mpls_srgb.start_label == 0) |
3384 | return 0; | |
1b6d5c7e | 3385 | |
d62a17ae | 3386 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3387 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3388 | vty_out(vty, "mpls label global-block %u %u\n", | |
3389 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3390 | } | |
1b6d5c7e | 3391 | |
d62a17ae | 3392 | return 1; |
1b6d5c7e VV |
3393 | } |
3394 | ||
84915b0a | 3395 | /* |
3396 | * Called when VRF becomes inactive, cleans up information but keeps | |
3397 | * the table itself. | |
84915b0a | 3398 | */ |
3399 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3400 | { | |
c2e10644 MS |
3401 | struct zebra_vrf *def_zvrf; |
3402 | afi_t afi; | |
3403 | ||
3404 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3405 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3406 | else { | |
3407 | /* | |
3408 | * For other vrfs, we try to remove associated LSPs; we locate | |
3409 | * the LSPs in the default vrf. | |
3410 | */ | |
3411 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3412 | ||
3413 | /* At shutdown, the default may be gone already */ | |
3414 | if (def_zvrf == NULL) | |
3415 | return; | |
3416 | ||
3417 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3418 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3419 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3420 | } | |
3421 | } | |
84915b0a | 3422 | } |
3423 | ||
40c7bdb0 | 3424 | /* |
3425 | * Called upon process exiting, need to delete LSP forwarding | |
3426 | * entries from the kernel. | |
3427 | * NOTE: Currently supported only for default VRF. | |
3428 | */ | |
d62a17ae | 3429 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 3430 | { |
d62a17ae | 3431 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
3432 | hash_clean(zvrf->lsp_table, NULL); | |
3433 | hash_free(zvrf->lsp_table); | |
3434 | hash_clean(zvrf->slsp_table, NULL); | |
3435 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
3436 | route_table_finish(zvrf->fec_table[AFI_IP]); |
3437 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 3438 | } |
3439 | ||
7758e3f3 | 3440 | /* |
3441 | * Allocate MPLS tables for this VRF and do other initialization. | |
3442 | * NOTE: Currently supported only for default VRF. | |
3443 | */ | |
d62a17ae | 3444 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 3445 | { |
d62a17ae | 3446 | if (!zvrf) |
3447 | return; | |
996c9314 LB |
3448 | zvrf->slsp_table = |
3449 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
3450 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 3451 | zvrf->fec_table[AFI_IP] = route_table_init(); |
3452 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
3453 | zvrf->mpls_flags = 0; | |
3454 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
3455 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 3456 | } |
3457 | ||
3458 | /* | |
3459 | * Global MPLS initialization. | |
3460 | */ | |
d62a17ae | 3461 | void zebra_mpls_init(void) |
7758e3f3 | 3462 | { |
d62a17ae | 3463 | mpls_enabled = 0; |
33c32282 | 3464 | |
d62a17ae | 3465 | if (mpls_kernel_init() < 0) { |
e914ccbe | 3466 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 3467 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 3468 | return; |
3469 | } | |
fe6c7157 | 3470 | |
2561d12e | 3471 | if (!mpls_processq_init()) |
d62a17ae | 3472 | mpls_enabled = 1; |
453844ab | 3473 | |
21ccc0cf | 3474 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 3475 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 3476 | } |