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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); | |
1323491d MS |
96 | |
97 | /* Check whether lsp can be freed - no nhlfes, e.g., and call free api */ | |
98 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
99 | ||
ebab422a MS |
100 | /* Free lsp; sets caller's pointer to NULL */ |
101 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp); | |
d62a17ae | 102 | |
103 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size); | |
104 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, | |
e4a1ec74 | 105 | const union g_addr *gate, ifindex_t ifindex); |
ee70f629 MS |
106 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
107 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
108 | enum nexthop_types_t gtype, |
109 | const union g_addr *gate, ifindex_t ifindex); | |
d62a17ae | 110 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
e4a1ec74 MS |
111 | enum nexthop_types_t gtype, |
112 | const union g_addr *gate, ifindex_t ifindex, | |
cd4bb96f MS |
113 | uint8_t num_labels, const mpls_label_t *labels); |
114 | static int nhlfe_del(zebra_nhlfe_t *nhlfe); | |
115 | static void nhlfe_free(zebra_nhlfe_t *nhlfe); | |
d62a17ae | 116 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 117 | struct mpls_label_stack *nh_label); |
d62a17ae | 118 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, |
119 | enum lsp_types_t type); | |
f2e7f4eb MS |
120 | static int lsp_backup_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
121 | mpls_label_t in_label, | |
122 | enum nexthop_types_t gtype, | |
123 | const union g_addr *gate, ifindex_t ifindex); | |
d62a17ae | 124 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
125 | mpls_label_t in_label); | |
126 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty); | |
a29c2887 | 127 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp); |
d62a17ae | 128 | static void *slsp_alloc(void *p); |
129 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, | |
e4a1ec74 | 130 | const union g_addr *gate, ifindex_t ifindex); |
d62a17ae | 131 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
132 | enum nexthop_types_t gtype, | |
e4a1ec74 | 133 | const union g_addr *gate, ifindex_t ifindex); |
d62a17ae | 134 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
135 | enum nexthop_types_t gtype, | |
e4a1ec74 | 136 | const union g_addr *gate, ifindex_t ifindex, |
d62a17ae | 137 | mpls_label_t out_label); |
138 | static int snhlfe_del(zebra_snhlfe_t *snhlfe); | |
139 | static int snhlfe_del_all(zebra_slsp_t *slsp); | |
140 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size); | |
651105b5 RW |
141 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt); |
142 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, | |
143 | int afi, enum lsp_types_t lsp_type); | |
f2e7f4eb MS |
144 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
145 | const struct zapi_nexthop *znh); | |
146 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, | |
147 | const struct zapi_nexthop *znh); | |
7758e3f3 | 148 | |
ee70f629 MS |
149 | /* List implementations - declare internal linkage */ |
150 | DECLARE_DLIST(snhlfe_list, struct zebra_snhlfe_t_, list); | |
7758e3f3 | 151 | |
152 | /* Static functions */ | |
153 | ||
3d468f66 DS |
154 | /* |
155 | * Handle failure in LSP install, clear flags for NHLFE. | |
156 | */ | |
157 | static void clear_nhlfe_installed(zebra_lsp_t *lsp) | |
158 | { | |
159 | zebra_nhlfe_t *nhlfe; | |
160 | struct nexthop *nexthop; | |
161 | ||
ee70f629 | 162 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
3d468f66 DS |
163 | nexthop = nhlfe->nexthop; |
164 | if (!nexthop) | |
165 | continue; | |
166 | ||
167 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
168 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
169 | } | |
170 | } | |
171 | ||
a64448ba DS |
172 | /* |
173 | * Install label forwarding entry based on labeled-route entry. | |
174 | */ | |
d62a17ae | 175 | static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label, |
176 | struct route_node *rn, struct route_entry *re) | |
177 | { | |
178 | struct hash *lsp_table; | |
179 | zebra_ile_t tmp_ile; | |
180 | zebra_lsp_t *lsp; | |
181 | zebra_nhlfe_t *nhlfe; | |
182 | struct nexthop *nexthop; | |
183 | enum lsp_types_t lsp_type; | |
184 | char buf[BUFSIZ]; | |
185 | int added, changed; | |
186 | ||
187 | /* Lookup table. */ | |
188 | lsp_table = zvrf->lsp_table; | |
189 | if (!lsp_table) | |
190 | return -1; | |
191 | ||
192 | lsp_type = lsp_type_from_re_type(re->type); | |
193 | added = changed = 0; | |
194 | ||
195 | /* Locate or allocate LSP entry. */ | |
196 | tmp_ile.in_label = label; | |
197 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
198 | if (!lsp) | |
199 | return -1; | |
200 | ||
201 | /* For each active nexthop, create NHLFE. Note that we deliberately skip | |
202 | * recursive nexthops right now, because intermediate hops won't | |
203 | * understand | |
204 | * the label advertised by the recursive nexthop (plus we don't have the | |
205 | * logic yet to push multiple labels). | |
206 | */ | |
c415d895 | 207 | for (nexthop = re->nhe->nhg.nexthop; |
0eb97b86 | 208 | nexthop; nexthop = nexthop->next) { |
d62a17ae | 209 | /* Skip inactive and recursive entries. */ |
210 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
211 | continue; | |
212 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE)) | |
213 | continue; | |
214 | ||
ee70f629 MS |
215 | nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type, |
216 | nexthop->type, &nexthop->gate, | |
d62a17ae | 217 | nexthop->ifindex); |
218 | if (nhlfe) { | |
219 | /* Clear deleted flag (in case it was set) */ | |
220 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
221 | if (nexthop_labels_match(nhlfe->nexthop, nexthop)) | |
222 | /* No change */ | |
223 | continue; | |
224 | ||
225 | ||
226 | if (IS_ZEBRA_DEBUG_MPLS) { | |
227 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
228 | zlog_debug( | |
229 | "LSP in-label %u type %d nexthop %s " | |
230 | "out-label changed", | |
231 | lsp->ile.in_label, lsp_type, buf); | |
232 | } | |
233 | ||
234 | /* Update out label, trigger processing. */ | |
235 | nhlfe_out_label_update(nhlfe, nexthop->nh_label); | |
236 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
237 | changed++; | |
238 | } else { | |
239 | /* Add LSP entry to this nexthop */ | |
240 | nhlfe = nhlfe_add(lsp, lsp_type, nexthop->type, | |
241 | &nexthop->gate, nexthop->ifindex, | |
5065db0a RW |
242 | nexthop->nh_label->num_labels, |
243 | nexthop->nh_label->label); | |
d62a17ae | 244 | if (!nhlfe) |
245 | return -1; | |
246 | ||
247 | if (IS_ZEBRA_DEBUG_MPLS) { | |
248 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
249 | zlog_debug( | |
250 | "Add LSP in-label %u type %d nexthop %s " | |
251 | "out-label %u", | |
252 | lsp->ile.in_label, lsp_type, buf, | |
253 | nexthop->nh_label->label[0]); | |
254 | } | |
255 | ||
256 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
257 | ||
258 | /* Mark NHLFE as changed. */ | |
259 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
260 | added++; | |
261 | } | |
262 | } | |
263 | ||
264 | /* Queue LSP for processing if necessary. If no NHLFE got added (special | |
265 | * case), delete the LSP entry; this case results in somewhat ugly | |
266 | * logging. | |
267 | */ | |
268 | if (added || changed) { | |
269 | if (lsp_processq_add(lsp)) | |
270 | return -1; | |
1323491d MS |
271 | } else { |
272 | lsp_check_free(lsp_table, &lsp); | |
273 | } | |
d62a17ae | 274 | |
275 | return 0; | |
a64448ba DS |
276 | } |
277 | ||
278 | /* | |
279 | * Uninstall all non-static NHLFEs of a label forwarding entry. If all | |
280 | * NHLFEs are removed, the entire entry is deleted. | |
281 | */ | |
d62a17ae | 282 | static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label) |
283 | { | |
284 | struct hash *lsp_table; | |
285 | zebra_ile_t tmp_ile; | |
286 | zebra_lsp_t *lsp; | |
ee70f629 | 287 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 288 | char buf[BUFSIZ]; |
289 | ||
290 | /* Lookup table. */ | |
291 | lsp_table = zvrf->lsp_table; | |
292 | if (!lsp_table) | |
293 | return -1; | |
294 | ||
295 | /* If entry is not present, exit. */ | |
296 | tmp_ile.in_label = label; | |
297 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 298 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 299 | return 0; |
300 | ||
301 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 302 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 303 | |
304 | /* Skip static NHLFEs */ | |
305 | if (nhlfe->type == ZEBRA_LSP_STATIC) | |
306 | continue; | |
307 | ||
308 | if (IS_ZEBRA_DEBUG_MPLS) { | |
309 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
310 | zlog_debug( | |
311 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
312 | label, nhlfe->type, buf, nhlfe->flags); | |
313 | } | |
314 | ||
315 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED)) { | |
316 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
317 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
318 | } else { | |
319 | nhlfe_del(nhlfe); | |
320 | } | |
321 | } | |
322 | ||
323 | /* Queue LSP for processing, if needed, else delete. */ | |
324 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
325 | if (lsp_processq_add(lsp)) | |
326 | return -1; | |
1323491d MS |
327 | } else { |
328 | lsp_check_free(lsp_table, &lsp); | |
329 | } | |
d62a17ae | 330 | |
331 | return 0; | |
a64448ba DS |
332 | } |
333 | ||
28d58fd7 VV |
334 | /* |
335 | * This function is invoked upon change to label block configuration; it | |
336 | * will walk all registered FECs with label-index and appropriately update | |
337 | * their local labels and trigger client updates. | |
338 | */ | |
d62a17ae | 339 | static void fec_evaluate(struct zebra_vrf *zvrf) |
340 | { | |
341 | struct route_node *rn; | |
342 | zebra_fec_t *fec; | |
d7c0a89a | 343 | uint32_t old_label, new_label; |
d62a17ae | 344 | int af; |
345 | char buf[BUFSIZ]; | |
346 | ||
347 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
348 | if (zvrf->fec_table[af] == NULL) | |
349 | continue; | |
350 | ||
351 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
352 | rn = route_next(rn)) { | |
353 | if ((fec = rn->info) == NULL) | |
354 | continue; | |
355 | ||
356 | /* Skip configured FECs and those without a label index. | |
357 | */ | |
358 | if (fec->flags & FEC_FLAG_CONFIGURED | |
359 | || fec->label_index == MPLS_INVALID_LABEL_INDEX) | |
360 | continue; | |
361 | ||
362 | if (IS_ZEBRA_DEBUG_MPLS) | |
363 | prefix2str(&rn->p, buf, BUFSIZ); | |
364 | ||
365 | /* Save old label, determine new label. */ | |
366 | old_label = fec->label; | |
367 | new_label = | |
368 | zvrf->mpls_srgb.start_label + fec->label_index; | |
369 | if (new_label >= zvrf->mpls_srgb.end_label) | |
370 | new_label = MPLS_INVALID_LABEL; | |
371 | ||
372 | /* If label has changed, update FEC and clients. */ | |
373 | if (new_label == old_label) | |
374 | continue; | |
375 | ||
376 | if (IS_ZEBRA_DEBUG_MPLS) | |
377 | zlog_debug( | |
378 | "Update fec %s new label %u upon label block", | |
379 | buf, new_label); | |
380 | ||
381 | fec->label = new_label; | |
382 | fec_update_clients(fec); | |
383 | ||
384 | /* Update label forwarding entries appropriately */ | |
385 | fec_change_update_lsp(zvrf, fec, old_label); | |
386 | } | |
387 | } | |
28d58fd7 VV |
388 | } |
389 | ||
390 | /* | |
391 | * Derive (if possible) and update the local label for the FEC based on | |
392 | * its label index. The index is "acceptable" if it falls within the | |
393 | * globally configured label block (SRGB). | |
394 | */ | |
d7c0a89a QY |
395 | static uint32_t fec_derive_label_from_index(struct zebra_vrf *zvrf, |
396 | zebra_fec_t *fec) | |
28d58fd7 | 397 | { |
d7c0a89a | 398 | uint32_t label; |
28d58fd7 | 399 | |
d62a17ae | 400 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX |
401 | && zvrf->mpls_srgb.start_label | |
402 | && ((label = zvrf->mpls_srgb.start_label + fec->label_index) | |
403 | < zvrf->mpls_srgb.end_label)) | |
404 | fec->label = label; | |
405 | else | |
406 | fec->label = MPLS_INVALID_LABEL; | |
28d58fd7 | 407 | |
d62a17ae | 408 | return fec->label; |
28d58fd7 VV |
409 | } |
410 | ||
a64448ba DS |
411 | /* |
412 | * There is a change for this FEC. Install or uninstall label forwarding | |
413 | * entries, as appropriate. | |
414 | */ | |
d62a17ae | 415 | static int fec_change_update_lsp(struct zebra_vrf *zvrf, zebra_fec_t *fec, |
416 | mpls_label_t old_label) | |
a64448ba | 417 | { |
d62a17ae | 418 | struct route_table *table; |
419 | struct route_node *rn; | |
420 | struct route_entry *re; | |
421 | afi_t afi; | |
a64448ba | 422 | |
d62a17ae | 423 | /* Uninstall label forwarding entry, if previously installed. */ |
996c9314 LB |
424 | if (old_label != MPLS_INVALID_LABEL |
425 | && old_label != MPLS_LABEL_IMPLICIT_NULL) | |
d62a17ae | 426 | lsp_uninstall(zvrf, old_label); |
a64448ba | 427 | |
d62a17ae | 428 | /* Install label forwarding entry corr. to new label, if needed. */ |
429 | if (fec->label == MPLS_INVALID_LABEL | |
70e98a7f | 430 | || fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 431 | return 0; |
a64448ba | 432 | |
d62a17ae | 433 | afi = family2afi(PREFIX_FAMILY(&fec->rn->p)); |
434 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
435 | if (!table) | |
436 | return 0; | |
a64448ba | 437 | |
d62a17ae | 438 | /* See if labeled route exists. */ |
439 | rn = route_node_lookup(table, &fec->rn->p); | |
440 | if (!rn) | |
441 | return 0; | |
a64448ba | 442 | |
a2addae8 | 443 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 444 | if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED)) |
445 | break; | |
446 | } | |
a64448ba | 447 | |
d62a17ae | 448 | if (!re || !zebra_rib_labeled_unicast(re)) |
449 | return 0; | |
a64448ba | 450 | |
d62a17ae | 451 | if (lsp_install(zvrf, fec->label, rn, re)) |
452 | return -1; | |
a64448ba | 453 | |
d62a17ae | 454 | return 0; |
a64448ba DS |
455 | } |
456 | ||
5aba114a DS |
457 | /* |
458 | * Inform about FEC to a registered client. | |
459 | */ | |
d62a17ae | 460 | static int fec_send(zebra_fec_t *fec, struct zserv *client) |
5aba114a | 461 | { |
d62a17ae | 462 | struct stream *s; |
463 | struct route_node *rn; | |
5aba114a | 464 | |
d62a17ae | 465 | rn = fec->rn; |
5aba114a | 466 | |
d62a17ae | 467 | /* Get output stream. */ |
1002497a | 468 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); |
5aba114a | 469 | |
7cf15b25 | 470 | zclient_create_header(s, ZEBRA_FEC_UPDATE, VRF_DEFAULT); |
5aba114a | 471 | |
d62a17ae | 472 | stream_putw(s, rn->p.family); |
473 | stream_put_prefix(s, &rn->p); | |
474 | stream_putl(s, fec->label); | |
475 | stream_putw_at(s, 0, stream_get_endp(s)); | |
21ccc0cf | 476 | return zserv_send_message(client, s); |
5aba114a DS |
477 | } |
478 | ||
479 | /* | |
480 | * Update all registered clients about this FEC. Caller should've updated | |
481 | * FEC and ensure no duplicate updates. | |
482 | */ | |
d62a17ae | 483 | static void fec_update_clients(zebra_fec_t *fec) |
5aba114a | 484 | { |
d62a17ae | 485 | struct listnode *node; |
486 | struct zserv *client; | |
5aba114a | 487 | |
d62a17ae | 488 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) { |
489 | if (IS_ZEBRA_DEBUG_MPLS) | |
490 | zlog_debug("Update client %s", | |
491 | zebra_route_string(client->proto)); | |
492 | fec_send(fec, client); | |
493 | } | |
5aba114a DS |
494 | } |
495 | ||
496 | ||
f31e084c DS |
497 | /* |
498 | * Print a FEC-label binding entry. | |
499 | */ | |
d62a17ae | 500 | static void fec_print(zebra_fec_t *fec, struct vty *vty) |
501 | { | |
502 | struct route_node *rn; | |
503 | struct listnode *node; | |
504 | struct zserv *client; | |
505 | char buf[BUFSIZ]; | |
506 | ||
507 | rn = fec->rn; | |
508 | prefix2str(&rn->p, buf, BUFSIZ); | |
509 | vty_out(vty, "%s\n", buf); | |
510 | vty_out(vty, " Label: %s", label2str(fec->label, buf, BUFSIZ)); | |
511 | if (fec->label_index != MPLS_INVALID_LABEL_INDEX) | |
512 | vty_out(vty, ", Label Index: %u", fec->label_index); | |
513 | vty_out(vty, "\n"); | |
514 | if (!list_isempty(fec->client_list)) { | |
515 | vty_out(vty, " Client list:"); | |
516 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, client)) | |
517 | vty_out(vty, " %s(fd %d)", | |
518 | zebra_route_string(client->proto), | |
519 | client->sock); | |
520 | vty_out(vty, "\n"); | |
521 | } | |
f31e084c DS |
522 | } |
523 | ||
524 | /* | |
525 | * Locate FEC-label binding that matches with passed info. | |
526 | */ | |
d62a17ae | 527 | static zebra_fec_t *fec_find(struct route_table *table, struct prefix *p) |
f31e084c | 528 | { |
d62a17ae | 529 | struct route_node *rn; |
f31e084c | 530 | |
d62a17ae | 531 | apply_mask(p); |
532 | rn = route_node_lookup(table, p); | |
533 | if (!rn) | |
534 | return NULL; | |
f31e084c | 535 | |
d62a17ae | 536 | route_unlock_node(rn); |
537 | return (rn->info); | |
f31e084c DS |
538 | } |
539 | ||
540 | /* | |
5aba114a DS |
541 | * Add a FEC. This may be upon a client registering for a binding |
542 | * or when a binding is configured. | |
f31e084c | 543 | */ |
d62a17ae | 544 | static zebra_fec_t *fec_add(struct route_table *table, struct prefix *p, |
d7c0a89a QY |
545 | mpls_label_t label, uint32_t flags, |
546 | uint32_t label_index) | |
f31e084c | 547 | { |
d62a17ae | 548 | struct route_node *rn; |
549 | zebra_fec_t *fec; | |
f31e084c | 550 | |
d62a17ae | 551 | apply_mask(p); |
f31e084c | 552 | |
d62a17ae | 553 | /* Lookup (or add) route node.*/ |
554 | rn = route_node_get(table, p); | |
555 | if (!rn) | |
556 | return NULL; | |
f31e084c | 557 | |
d62a17ae | 558 | fec = rn->info; |
f31e084c | 559 | |
d62a17ae | 560 | if (!fec) { |
561 | fec = XCALLOC(MTYPE_FEC, sizeof(zebra_fec_t)); | |
f31e084c | 562 | |
d62a17ae | 563 | rn->info = fec; |
564 | fec->rn = rn; | |
565 | fec->label = label; | |
566 | fec->client_list = list_new(); | |
567 | } else | |
568 | route_unlock_node(rn); /* for the route_node_get */ | |
f31e084c | 569 | |
d62a17ae | 570 | fec->label_index = label_index; |
571 | fec->flags = flags; | |
f31e084c | 572 | |
d62a17ae | 573 | return fec; |
f31e084c DS |
574 | } |
575 | ||
576 | /* | |
5aba114a DS |
577 | * Delete a FEC. This may be upon the last client deregistering for |
578 | * a FEC and no binding exists or when the binding is deleted and there | |
579 | * are no registered clients. | |
f31e084c | 580 | */ |
d62a17ae | 581 | static int fec_del(zebra_fec_t *fec) |
f31e084c | 582 | { |
6a154c88 | 583 | list_delete(&fec->client_list); |
d62a17ae | 584 | fec->rn->info = NULL; |
585 | route_unlock_node(fec->rn); | |
586 | XFREE(MTYPE_FEC, fec); | |
587 | return 0; | |
f31e084c DS |
588 | } |
589 | ||
7758e3f3 | 590 | /* |
591 | * Hash function for label. | |
592 | */ | |
d8b87afe | 593 | static unsigned int label_hash(const void *p) |
7758e3f3 | 594 | { |
d62a17ae | 595 | const zebra_ile_t *ile = p; |
7758e3f3 | 596 | |
d62a17ae | 597 | return (jhash_1word(ile->in_label, 0)); |
7758e3f3 | 598 | } |
599 | ||
600 | /* | |
601 | * Compare 2 LSP hash entries based on in-label. | |
602 | */ | |
74df8d6d | 603 | static bool label_cmp(const void *p1, const void *p2) |
7758e3f3 | 604 | { |
d62a17ae | 605 | const zebra_ile_t *ile1 = p1; |
606 | const zebra_ile_t *ile2 = p2; | |
7758e3f3 | 607 | |
d62a17ae | 608 | return (ile1->in_label == ile2->in_label); |
7758e3f3 | 609 | } |
610 | ||
40c7bdb0 | 611 | /* |
612 | * Check if an IPv4 nexthop for a NHLFE is active. Update nexthop based on | |
613 | * the passed flag. | |
614 | * NOTE: Looking only for connected routes right now. | |
615 | */ | |
d62a17ae | 616 | static int nhlfe_nexthop_active_ipv4(zebra_nhlfe_t *nhlfe, |
617 | struct nexthop *nexthop) | |
40c7bdb0 | 618 | { |
d62a17ae | 619 | struct route_table *table; |
620 | struct prefix_ipv4 p; | |
621 | struct route_node *rn; | |
622 | struct route_entry *match; | |
623 | struct nexthop *match_nh; | |
40c7bdb0 | 624 | |
4a7371e9 | 625 | table = zebra_vrf_table(AFI_IP, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 626 | if (!table) |
627 | return 0; | |
40c7bdb0 | 628 | |
d62a17ae | 629 | /* Lookup nexthop in IPv4 routing table. */ |
630 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
631 | p.family = AF_INET; | |
632 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
633 | p.prefix = nexthop->gate.ipv4; | |
40c7bdb0 | 634 | |
d62a17ae | 635 | rn = route_node_match(table, (struct prefix *)&p); |
636 | if (!rn) | |
637 | return 0; | |
40c7bdb0 | 638 | |
d62a17ae | 639 | route_unlock_node(rn); |
88d88a9c | 640 | |
d62a17ae | 641 | /* Locate a valid connected route. */ |
a2addae8 | 642 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 643 | if (CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) |
644 | || !CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
645 | continue; | |
646 | ||
c415d895 | 647 | for (match_nh = match->nhe->nhg.nexthop; match_nh; |
d62a17ae | 648 | match_nh = match_nh->next) { |
649 | if (match->type == ZEBRA_ROUTE_CONNECT | |
650 | || nexthop->ifindex == match_nh->ifindex) { | |
651 | nexthop->ifindex = match_nh->ifindex; | |
652 | return 1; | |
653 | } | |
654 | } | |
88d88a9c | 655 | } |
40c7bdb0 | 656 | |
d62a17ae | 657 | return 0; |
40c7bdb0 | 658 | } |
659 | ||
660 | ||
661 | /* | |
662 | * Check if an IPv6 nexthop for a NHLFE is active. Update nexthop based on | |
663 | * the passed flag. | |
664 | * NOTE: Looking only for connected routes right now. | |
665 | */ | |
d62a17ae | 666 | static int nhlfe_nexthop_active_ipv6(zebra_nhlfe_t *nhlfe, |
667 | struct nexthop *nexthop) | |
40c7bdb0 | 668 | { |
d62a17ae | 669 | struct route_table *table; |
670 | struct prefix_ipv6 p; | |
671 | struct route_node *rn; | |
672 | struct route_entry *match; | |
40c7bdb0 | 673 | |
4a7371e9 | 674 | table = zebra_vrf_table(AFI_IP6, SAFI_UNICAST, nexthop->vrf_id); |
d62a17ae | 675 | if (!table) |
676 | return 0; | |
40c7bdb0 | 677 | |
d62a17ae | 678 | /* Lookup nexthop in IPv6 routing table. */ |
679 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
680 | p.family = AF_INET6; | |
681 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
682 | p.prefix = nexthop->gate.ipv6; | |
40c7bdb0 | 683 | |
d62a17ae | 684 | rn = route_node_match(table, (struct prefix *)&p); |
685 | if (!rn) | |
686 | return 0; | |
40c7bdb0 | 687 | |
d62a17ae | 688 | route_unlock_node(rn); |
40c7bdb0 | 689 | |
d62a17ae | 690 | /* Locate a valid connected route. */ |
a2addae8 | 691 | RNODE_FOREACH_RE (rn, match) { |
d62a17ae | 692 | if ((match->type == ZEBRA_ROUTE_CONNECT) |
693 | && !CHECK_FLAG(match->status, ROUTE_ENTRY_REMOVED) | |
694 | && CHECK_FLAG(match->flags, ZEBRA_FLAG_SELECTED)) | |
695 | break; | |
696 | } | |
40c7bdb0 | 697 | |
c415d895 | 698 | if (!match || !match->nhe->nhg.nexthop) |
d62a17ae | 699 | return 0; |
40c7bdb0 | 700 | |
c415d895 | 701 | nexthop->ifindex = match->nhe->nhg.nexthop->ifindex; |
d62a17ae | 702 | return 1; |
40c7bdb0 | 703 | } |
704 | ||
705 | ||
706 | /* | |
707 | * Check the nexthop reachability for a NHLFE and return if valid (reachable) | |
708 | * or not. | |
709 | * NOTE: Each NHLFE points to only 1 nexthop. | |
710 | */ | |
d62a17ae | 711 | static int nhlfe_nexthop_active(zebra_nhlfe_t *nhlfe) |
712 | { | |
713 | struct nexthop *nexthop; | |
714 | struct interface *ifp; | |
86f07f44 | 715 | struct zebra_ns *zns; |
d62a17ae | 716 | |
717 | nexthop = nhlfe->nexthop; | |
718 | if (!nexthop) // unexpected | |
719 | return 0; | |
720 | ||
721 | /* Check on nexthop based on type. */ | |
722 | switch (nexthop->type) { | |
b9abd9ad DS |
723 | case NEXTHOP_TYPE_IFINDEX: |
724 | /* | |
725 | * Lookup if this type is special. The | |
726 | * NEXTHOP_TYPE_IFINDEX is a pop and | |
727 | * forward into a different table for | |
728 | * processing. As such this ifindex | |
729 | * passed to us may be a VRF device | |
730 | * which will not be in the default | |
731 | * VRF. So let's look in all of them | |
732 | */ | |
86f07f44 PG |
733 | zns = zebra_ns_lookup(NS_DEFAULT); |
734 | ifp = if_lookup_by_index_per_ns(zns, nexthop->ifindex); | |
b9abd9ad DS |
735 | if (ifp && if_is_operative(ifp)) |
736 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
737 | else | |
738 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
739 | break; | |
d62a17ae | 740 | case NEXTHOP_TYPE_IPV4: |
741 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
742 | if (nhlfe_nexthop_active_ipv4(nhlfe, nexthop)) | |
743 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
744 | else | |
745 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
746 | break; | |
747 | ||
748 | case NEXTHOP_TYPE_IPV6: | |
749 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
750 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
751 | else | |
752 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
753 | break; | |
754 | ||
755 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
756 | if (IN6_IS_ADDR_LINKLOCAL(&nexthop->gate.ipv6)) { | |
4a7371e9 DS |
757 | ifp = if_lookup_by_index(nexthop->ifindex, |
758 | nexthop->vrf_id); | |
d62a17ae | 759 | if (ifp && if_is_operative(ifp)) |
760 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
761 | else | |
762 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
763 | } else { | |
764 | if (nhlfe_nexthop_active_ipv6(nhlfe, nexthop)) | |
765 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
766 | else | |
767 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
768 | } | |
769 | break; | |
770 | ||
771 | default: | |
772 | break; | |
773 | } | |
774 | ||
775 | return CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); | |
40c7bdb0 | 776 | } |
777 | ||
778 | /* | |
779 | * Walk through NHLFEs for a LSP forwarding entry, verify nexthop | |
780 | * reachability and select the best. Multipath entries are also | |
781 | * marked. This is invoked when an LSP scheduled for processing (due | |
782 | * to some change) is examined. | |
783 | */ | |
d62a17ae | 784 | static void lsp_select_best_nhlfe(zebra_lsp_t *lsp) |
785 | { | |
786 | zebra_nhlfe_t *nhlfe; | |
787 | zebra_nhlfe_t *best; | |
788 | struct nexthop *nexthop; | |
789 | int changed = 0; | |
790 | ||
791 | if (!lsp) | |
792 | return; | |
793 | ||
794 | best = NULL; | |
795 | lsp->num_ecmp = 0; | |
796 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
797 | ||
798 | /* | |
799 | * First compute the best path, after checking nexthop status. We are | |
800 | * only | |
801 | * concerned with non-deleted NHLFEs. | |
802 | */ | |
ee70f629 | 803 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 804 | /* Clear selection flags. */ |
805 | UNSET_FLAG(nhlfe->flags, | |
806 | (NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH)); | |
807 | ||
808 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
809 | && nhlfe_nexthop_active(nhlfe)) { | |
810 | if (!best || (nhlfe->distance < best->distance)) | |
811 | best = nhlfe; | |
812 | } | |
813 | } | |
814 | ||
815 | lsp->best_nhlfe = best; | |
816 | if (!lsp->best_nhlfe) | |
817 | return; | |
818 | ||
819 | /* Mark best NHLFE as selected. */ | |
820 | SET_FLAG(lsp->best_nhlfe->flags, NHLFE_FLAG_SELECTED); | |
821 | ||
822 | /* | |
823 | * If best path exists, see if there is ECMP. While doing this, note if | |
824 | * a | |
825 | * new (uninstalled) NHLFE has been selected, an installed entry that is | |
826 | * still selected has a change or an installed entry is to be removed. | |
827 | */ | |
ee70f629 | 828 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 829 | int nh_chg, nh_sel, nh_inst; |
830 | ||
831 | nexthop = nhlfe->nexthop; | |
832 | if (!nexthop) // unexpected | |
833 | continue; | |
834 | ||
835 | if (!CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED) | |
836 | && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) | |
837 | && (nhlfe->distance == lsp->best_nhlfe->distance)) { | |
838 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
839 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_MULTIPATH); | |
840 | lsp->num_ecmp++; | |
841 | } | |
842 | ||
843 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) && !changed) { | |
844 | nh_chg = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
845 | nh_sel = CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_SELECTED); | |
846 | nh_inst = | |
847 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
848 | ||
849 | if ((nh_sel && !nh_inst) | |
850 | || (nh_sel && nh_inst && nh_chg) | |
851 | || (nh_inst && !nh_sel)) | |
852 | changed = 1; | |
853 | } | |
854 | ||
855 | /* We have finished examining, clear changed flag. */ | |
856 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
857 | } | |
858 | ||
859 | if (changed) | |
860 | SET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
40c7bdb0 | 861 | } |
862 | ||
863 | /* | |
864 | * Delete LSP forwarding entry from kernel, if installed. Called upon | |
865 | * process exit. | |
866 | */ | |
e3b78da8 | 867 | static void lsp_uninstall_from_kernel(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 868 | { |
d62a17ae | 869 | zebra_lsp_t *lsp; |
40c7bdb0 | 870 | |
e3b78da8 | 871 | lsp = (zebra_lsp_t *)bucket->data; |
4a83e7a0 | 872 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
8a6423a3 | 873 | (void)dplane_lsp_delete(lsp); |
40c7bdb0 | 874 | } |
875 | ||
876 | /* | |
877 | * Schedule LSP forwarding entry for processing. Called upon changes | |
878 | * that may impact LSPs such as nexthop / connected route changes. | |
879 | */ | |
e3b78da8 | 880 | static void lsp_schedule(struct hash_bucket *bucket, void *ctxt) |
40c7bdb0 | 881 | { |
d62a17ae | 882 | zebra_lsp_t *lsp; |
40c7bdb0 | 883 | |
e3b78da8 | 884 | lsp = (zebra_lsp_t *)bucket->data; |
0af35d90 | 885 | (void)lsp_processq_add(lsp); |
40c7bdb0 | 886 | } |
887 | ||
888 | /* | |
889 | * Process a LSP entry that is in the queue. Recalculate best NHLFE and | |
890 | * any multipaths and update or delete from the kernel, as needed. | |
891 | */ | |
d62a17ae | 892 | static wq_item_status lsp_process(struct work_queue *wq, void *data) |
893 | { | |
894 | zebra_lsp_t *lsp; | |
895 | zebra_nhlfe_t *oldbest, *newbest; | |
896 | char buf[BUFSIZ], buf2[BUFSIZ]; | |
897 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); | |
d37f4d6c | 898 | enum zebra_dplane_result res; |
d62a17ae | 899 | |
900 | lsp = (zebra_lsp_t *)data; | |
901 | if (!lsp) // unexpected | |
902 | return WQ_SUCCESS; | |
903 | ||
904 | oldbest = lsp->best_nhlfe; | |
905 | ||
906 | /* Select best NHLFE(s) */ | |
907 | lsp_select_best_nhlfe(lsp); | |
908 | ||
909 | newbest = lsp->best_nhlfe; | |
910 | ||
911 | if (IS_ZEBRA_DEBUG_MPLS) { | |
912 | if (oldbest) | |
913 | nhlfe2str(oldbest, buf, BUFSIZ); | |
914 | if (newbest) | |
915 | nhlfe2str(newbest, buf2, BUFSIZ); | |
916 | zlog_debug( | |
917 | "Process LSP in-label %u oldbest %s newbest %s " | |
918 | "flags 0x%x ecmp# %d", | |
919 | lsp->ile.in_label, oldbest ? buf : "NULL", | |
920 | newbest ? buf2 : "NULL", lsp->flags, lsp->num_ecmp); | |
921 | } | |
922 | ||
923 | if (!CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) { | |
924 | /* Not already installed */ | |
925 | if (newbest) { | |
2b63430c DS |
926 | |
927 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
928 | |
929 | switch (dplane_lsp_add(lsp)) { | |
ea1c14f6 | 930 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c MS |
931 | /* Set 'installed' flag so we will know |
932 | * that an install is in-flight. | |
933 | */ | |
934 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
935 | ||
936 | zvrf->lsp_installs_queued++; | |
7c5d0e18 | 937 | break; |
ea1c14f6 | 938 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
939 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
940 | "LSP Install Failure: %u", | |
941 | lsp->ile.in_label); | |
7c5d0e18 | 942 | break; |
ea1c14f6 | 943 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
944 | zvrf->lsp_installs++; |
945 | break; | |
946 | } | |
d62a17ae | 947 | } |
948 | } else { | |
949 | /* Installed, may need an update and/or delete. */ | |
950 | if (!newbest) { | |
d37f4d6c MS |
951 | res = dplane_lsp_delete(lsp); |
952 | ||
953 | /* We do some of the lsp cleanup immediately for | |
954 | * deletes. | |
955 | */ | |
956 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
957 | clear_nhlfe_installed(lsp); | |
e6d44ec7 | 958 | |
d37f4d6c | 959 | switch (res) { |
ea1c14f6 | 960 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 961 | zvrf->lsp_removals_queued++; |
7c5d0e18 | 962 | break; |
ea1c14f6 | 963 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
964 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, |
965 | "LSP Deletion Failure: %u", | |
966 | lsp->ile.in_label); | |
7c5d0e18 | 967 | break; |
ea1c14f6 | 968 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
969 | zvrf->lsp_removals++; |
970 | break; | |
971 | } | |
d62a17ae | 972 | } else if (CHECK_FLAG(lsp->flags, LSP_FLAG_CHANGED)) { |
9fa38ec6 DS |
973 | zebra_nhlfe_t *nhlfe; |
974 | struct nexthop *nexthop; | |
2b63430c DS |
975 | |
976 | UNSET_FLAG(lsp->flags, LSP_FLAG_CHANGED); | |
d37f4d6c MS |
977 | |
978 | /* We leave the INSTALLED flag set here | |
e4a1ec74 | 979 | * so we know an update is in-flight. |
d37f4d6c | 980 | */ |
e6d44ec7 | 981 | |
9fa38ec6 DS |
982 | /* |
983 | * Any NHLFE that was installed but is not | |
984 | * selected now needs to have its flags updated. | |
985 | */ | |
ee70f629 | 986 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
9fa38ec6 DS |
987 | nexthop = nhlfe->nexthop; |
988 | if (!nexthop) | |
989 | continue; | |
990 | ||
991 | if (CHECK_FLAG(nhlfe->flags, | |
996c9314 LB |
992 | NHLFE_FLAG_INSTALLED) |
993 | && !CHECK_FLAG(nhlfe->flags, | |
994 | NHLFE_FLAG_SELECTED)) { | |
9fa38ec6 DS |
995 | UNSET_FLAG(nhlfe->flags, |
996 | NHLFE_FLAG_INSTALLED); | |
997 | UNSET_FLAG(nexthop->flags, | |
998 | NEXTHOP_FLAG_FIB); | |
999 | } | |
1000 | } | |
1001 | ||
d37f4d6c | 1002 | switch (dplane_lsp_update(lsp)) { |
ea1c14f6 | 1003 | case ZEBRA_DPLANE_REQUEST_QUEUED: |
d37f4d6c | 1004 | zvrf->lsp_installs_queued++; |
7c5d0e18 | 1005 | break; |
ea1c14f6 | 1006 | case ZEBRA_DPLANE_REQUEST_FAILURE: |
d37f4d6c MS |
1007 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, |
1008 | "LSP Update Failure: %u", | |
1009 | lsp->ile.in_label); | |
7c5d0e18 | 1010 | break; |
ea1c14f6 | 1011 | case ZEBRA_DPLANE_REQUEST_SUCCESS: |
7c5d0e18 DS |
1012 | zvrf->lsp_installs++; |
1013 | break; | |
1014 | } | |
d62a17ae | 1015 | } |
1016 | } | |
1017 | ||
1018 | return WQ_SUCCESS; | |
40c7bdb0 | 1019 | } |
1020 | ||
1021 | ||
1022 | /* | |
1023 | * Callback upon processing completion of a LSP forwarding entry. | |
1024 | */ | |
d62a17ae | 1025 | static void lsp_processq_del(struct work_queue *wq, void *data) |
40c7bdb0 | 1026 | { |
d62a17ae | 1027 | struct zebra_vrf *zvrf; |
1028 | zebra_lsp_t *lsp; | |
1029 | struct hash *lsp_table; | |
ee70f629 | 1030 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1031 | |
d62a17ae | 1032 | zvrf = vrf_info_lookup(VRF_DEFAULT); |
1033 | assert(zvrf); | |
40c7bdb0 | 1034 | |
d62a17ae | 1035 | lsp_table = zvrf->lsp_table; |
1036 | if (!lsp_table) // unexpected | |
1037 | return; | |
40c7bdb0 | 1038 | |
d62a17ae | 1039 | lsp = (zebra_lsp_t *)data; |
1040 | if (!lsp) // unexpected | |
1041 | return; | |
40c7bdb0 | 1042 | |
d62a17ae | 1043 | /* Clear flag, remove any NHLFEs marked for deletion. If no NHLFEs |
1044 | * exist, | |
1045 | * delete LSP entry also. | |
1046 | */ | |
1047 | UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); | |
40c7bdb0 | 1048 | |
ee70f629 | 1049 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1050 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) |
1051 | nhlfe_del(nhlfe); | |
1052 | } | |
40c7bdb0 | 1053 | |
1323491d MS |
1054 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1055 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED)) | |
1056 | nhlfe_del(nhlfe); | |
1057 | } | |
1058 | ||
1059 | lsp_check_free(lsp_table, &lsp); | |
40c7bdb0 | 1060 | } |
1061 | ||
1062 | /* | |
1063 | * Callback upon finishing the processing of all scheduled | |
1064 | * LSP forwarding entries. | |
1065 | */ | |
d62a17ae | 1066 | static void lsp_processq_complete(struct work_queue *wq) |
40c7bdb0 | 1067 | { |
d62a17ae | 1068 | /* Nothing to do for now. */ |
40c7bdb0 | 1069 | } |
1070 | ||
1071 | /* | |
1072 | * Add LSP forwarding entry to queue for subsequent processing. | |
1073 | */ | |
d62a17ae | 1074 | static int lsp_processq_add(zebra_lsp_t *lsp) |
40c7bdb0 | 1075 | { |
d62a17ae | 1076 | /* If already scheduled, exit. */ |
1077 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1078 | return 0; | |
40c7bdb0 | 1079 | |
e2353ec2 | 1080 | if (zrouter.lsp_process_q == NULL) { |
e914ccbe | 1081 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1082 | "%s: work_queue does not exist!", __func__); |
d62a17ae | 1083 | return -1; |
1084 | } | |
33c32282 | 1085 | |
e2353ec2 | 1086 | work_queue_add(zrouter.lsp_process_q, lsp); |
d62a17ae | 1087 | SET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED); |
1088 | return 0; | |
40c7bdb0 | 1089 | } |
1090 | ||
1091 | /* | |
1092 | * Callback to allocate LSP forwarding table entry. | |
1093 | */ | |
d62a17ae | 1094 | static void *lsp_alloc(void *p) |
40c7bdb0 | 1095 | { |
d62a17ae | 1096 | const zebra_ile_t *ile = p; |
1097 | zebra_lsp_t *lsp; | |
40c7bdb0 | 1098 | |
d62a17ae | 1099 | lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t)); |
1100 | lsp->ile = *ile; | |
ee70f629 | 1101 | nhlfe_list_init(&lsp->nhlfe_list); |
cd4bb96f | 1102 | nhlfe_list_init(&lsp->backup_nhlfe_list); |
40c7bdb0 | 1103 | |
d62a17ae | 1104 | if (IS_ZEBRA_DEBUG_MPLS) |
1105 | zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label); | |
40c7bdb0 | 1106 | |
d62a17ae | 1107 | return ((void *)lsp); |
40c7bdb0 | 1108 | } |
1109 | ||
1323491d MS |
1110 | /* |
1111 | * Check whether lsp can be freed - no nhlfes, e.g., and call free api | |
1112 | */ | |
1113 | static void lsp_check_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1114 | { | |
1115 | zebra_lsp_t *lsp; | |
1116 | ||
1117 | if (plsp == NULL || *plsp == NULL) | |
1118 | return; | |
1119 | ||
1120 | lsp = *plsp; | |
1121 | ||
1122 | if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL) && | |
1123 | (nhlfe_list_first(&lsp->backup_nhlfe_list) == NULL) && | |
1124 | !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED)) | |
1125 | lsp_free(lsp_table, plsp); | |
1126 | } | |
1127 | ||
ebab422a MS |
1128 | /* |
1129 | * Dtor for an LSP: remove from ile hash, release any internal allocations, | |
1130 | * free LSP object. | |
1131 | */ | |
1132 | static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp) | |
1133 | { | |
1134 | zebra_lsp_t *lsp; | |
ee70f629 | 1135 | zebra_nhlfe_t *nhlfe; |
ebab422a MS |
1136 | |
1137 | if (plsp == NULL || *plsp == NULL) | |
1138 | return; | |
1139 | ||
1140 | lsp = *plsp; | |
1141 | ||
1142 | if (IS_ZEBRA_DEBUG_MPLS) | |
1143 | zlog_debug("Free LSP in-label %u flags 0x%x", | |
1144 | lsp->ile.in_label, lsp->flags); | |
1145 | ||
1146 | /* Free nhlfes, if any. */ | |
ee70f629 | 1147 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
ebab422a | 1148 | nhlfe_del(nhlfe); |
ebab422a | 1149 | |
cd4bb96f MS |
1150 | /* Free backup nhlfes, if any. */ |
1151 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) | |
1152 | nhlfe_del(nhlfe); | |
1153 | ||
ebab422a MS |
1154 | hash_release(lsp_table, &lsp->ile); |
1155 | XFREE(MTYPE_LSP, lsp); | |
1156 | ||
1157 | *plsp = NULL; | |
1158 | } | |
1159 | ||
40c7bdb0 | 1160 | /* |
1161 | * Create printable string for NHLFE entry. | |
1162 | */ | |
d62a17ae | 1163 | static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size) |
40c7bdb0 | 1164 | { |
d62a17ae | 1165 | struct nexthop *nexthop; |
40c7bdb0 | 1166 | |
d62a17ae | 1167 | buf[0] = '\0'; |
1168 | nexthop = nhlfe->nexthop; | |
1169 | switch (nexthop->type) { | |
1170 | case NEXTHOP_TYPE_IPV4: | |
1171 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1172 | inet_ntop(AF_INET, &nexthop->gate.ipv4, buf, size); | |
1173 | break; | |
1174 | case NEXTHOP_TYPE_IPV6: | |
be489c57 | 1175 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
d62a17ae | 1176 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, size); |
1177 | break; | |
b9abd9ad DS |
1178 | case NEXTHOP_TYPE_IFINDEX: |
1179 | snprintf(buf, size, "Ifindex: %u", nexthop->ifindex); | |
d62a17ae | 1180 | default: |
1181 | break; | |
1182 | } | |
40c7bdb0 | 1183 | |
d62a17ae | 1184 | return buf; |
40c7bdb0 | 1185 | } |
1186 | ||
1187 | /* | |
1188 | * Check if NHLFE matches with search info passed. | |
1189 | */ | |
d62a17ae | 1190 | static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1191 | const union g_addr *gate, ifindex_t ifindex) |
40c7bdb0 | 1192 | { |
d62a17ae | 1193 | struct nexthop *nhop; |
1194 | int cmp = 1; | |
40c7bdb0 | 1195 | |
d62a17ae | 1196 | nhop = nhlfe->nexthop; |
1197 | if (!nhop) | |
1198 | return 1; | |
40c7bdb0 | 1199 | |
d62a17ae | 1200 | if (nhop->type != gtype) |
1201 | return 1; | |
40c7bdb0 | 1202 | |
d62a17ae | 1203 | switch (nhop->type) { |
1204 | case NEXTHOP_TYPE_IPV4: | |
1205 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1206 | cmp = memcmp(&(nhop->gate.ipv4), &(gate->ipv4), | |
1207 | sizeof(struct in_addr)); | |
1208 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) | |
1209 | cmp = !(nhop->ifindex == ifindex); | |
1210 | break; | |
1211 | case NEXTHOP_TYPE_IPV6: | |
1212 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1213 | cmp = memcmp(&(nhop->gate.ipv6), &(gate->ipv6), | |
1214 | sizeof(struct in6_addr)); | |
1215 | if (!cmp && nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1216 | cmp = !(nhop->ifindex == ifindex); | |
1217 | break; | |
b9abd9ad DS |
1218 | case NEXTHOP_TYPE_IFINDEX: |
1219 | cmp = !(nhop->ifindex == ifindex); | |
1220 | break; | |
d62a17ae | 1221 | default: |
1222 | break; | |
1223 | } | |
40c7bdb0 | 1224 | |
d62a17ae | 1225 | return cmp; |
40c7bdb0 | 1226 | } |
1227 | ||
1228 | ||
1229 | /* | |
1230 | * Locate NHLFE that matches with passed info. | |
1231 | */ | |
ee70f629 MS |
1232 | static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list, |
1233 | enum lsp_types_t lsp_type, | |
e4a1ec74 MS |
1234 | enum nexthop_types_t gtype, |
1235 | const union g_addr *gate, ifindex_t ifindex) | |
40c7bdb0 | 1236 | { |
d62a17ae | 1237 | zebra_nhlfe_t *nhlfe; |
40c7bdb0 | 1238 | |
ee70f629 | 1239 | frr_each_safe(nhlfe_list, list, nhlfe) { |
d62a17ae | 1240 | if (nhlfe->type != lsp_type) |
1241 | continue; | |
1242 | if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex)) | |
1243 | break; | |
1244 | } | |
40c7bdb0 | 1245 | |
d62a17ae | 1246 | return nhlfe; |
40c7bdb0 | 1247 | } |
1248 | ||
ee70f629 MS |
1249 | /* |
1250 | * Allocate and init new NHLFE. | |
1251 | */ | |
cd4bb96f MS |
1252 | static zebra_nhlfe_t *nhlfe_alloc(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, |
1253 | enum nexthop_types_t gtype, | |
1254 | const union g_addr *gate, ifindex_t ifindex, | |
1255 | uint8_t num_labels, | |
1256 | const mpls_label_t *labels) | |
d62a17ae | 1257 | { |
1258 | zebra_nhlfe_t *nhlfe; | |
1259 | struct nexthop *nexthop; | |
1260 | ||
1261 | if (!lsp) | |
1262 | return NULL; | |
1263 | ||
1264 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1265 | |
1266 | nhlfe->lsp = lsp; | |
1267 | nhlfe->type = lsp_type; | |
1268 | nhlfe->distance = lsp_distance(lsp_type); | |
1269 | ||
1270 | nexthop = nexthop_new(); | |
1271 | if (!nexthop) { | |
1272 | XFREE(MTYPE_NHLFE, nhlfe); | |
1273 | return NULL; | |
1274 | } | |
cd4bb96f | 1275 | |
5065db0a | 1276 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1277 | |
4a7371e9 | 1278 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1279 | nexthop->type = gtype; |
1280 | switch (nexthop->type) { | |
1281 | case NEXTHOP_TYPE_IPV4: | |
1282 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1283 | nexthop->gate.ipv4 = gate->ipv4; | |
1284 | if (ifindex) | |
1285 | nexthop->ifindex = ifindex; | |
1286 | break; | |
1287 | case NEXTHOP_TYPE_IPV6: | |
1288 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1289 | nexthop->gate.ipv6 = gate->ipv6; | |
1290 | if (ifindex) | |
1291 | nexthop->ifindex = ifindex; | |
1292 | break; | |
b9abd9ad DS |
1293 | case NEXTHOP_TYPE_IFINDEX: |
1294 | nexthop->ifindex = ifindex; | |
1295 | break; | |
d62a17ae | 1296 | default: |
1297 | nexthop_free(nexthop); | |
1298 | XFREE(MTYPE_NHLFE, nhlfe); | |
1299 | return NULL; | |
d62a17ae | 1300 | } |
d62a17ae | 1301 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1302 | |
1303 | return nhlfe; | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * Add NHLFE. Base entry must have been created and duplicate | |
1308 | * check done. | |
1309 | */ | |
1310 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
1311 | enum nexthop_types_t gtype, | |
1312 | const union g_addr *gate, ifindex_t ifindex, | |
cd4bb96f MS |
1313 | uint8_t num_labels, const mpls_label_t *labels) |
1314 | { | |
1315 | zebra_nhlfe_t *nhlfe; | |
1316 | ||
1317 | if (!lsp) | |
1318 | return NULL; | |
1319 | ||
1320 | /* Allocate new object */ | |
1321 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, | |
1322 | labels); | |
1323 | ||
1324 | /* Enqueue to LSP, at head of list. */ | |
1325 | if (nhlfe) | |
1326 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); | |
1327 | ||
1328 | return nhlfe; | |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * Add backup NHLFE. Base entry must have been created and duplicate | |
1333 | * check done. | |
1334 | */ | |
1335 | static zebra_nhlfe_t *nhlfe_backup_add(zebra_lsp_t *lsp, | |
1336 | enum lsp_types_t lsp_type, | |
1337 | enum nexthop_types_t gtype, | |
1338 | const union g_addr *gate, | |
1339 | ifindex_t ifindex, uint8_t num_labels, | |
1340 | const mpls_label_t *labels) | |
ee70f629 MS |
1341 | { |
1342 | zebra_nhlfe_t *nhlfe; | |
1343 | ||
1344 | if (!lsp) | |
1345 | return NULL; | |
1346 | ||
1347 | /* Allocate new object */ | |
cd4bb96f MS |
1348 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1349 | labels); | |
1350 | ||
1351 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
ee70f629 | 1352 | |
cd4bb96f | 1353 | /* Enqueue to LSP, at tail of list. */ |
ee70f629 | 1354 | if (nhlfe) |
cd4bb96f | 1355 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); |
d62a17ae | 1356 | |
1357 | return nhlfe; | |
40c7bdb0 | 1358 | } |
1359 | ||
1360 | /* | |
cd4bb96f MS |
1361 | * Common delete for NHLFEs. |
1362 | */ | |
1363 | static void nhlfe_free(zebra_nhlfe_t *nhlfe) | |
1364 | { | |
1365 | if (!nhlfe) | |
1366 | return; | |
1367 | ||
1368 | /* Free nexthop. */ | |
1369 | if (nhlfe->nexthop) | |
1370 | nexthop_free(nhlfe->nexthop); | |
1371 | ||
1372 | nhlfe->nexthop = NULL; | |
1373 | ||
1374 | XFREE(MTYPE_NHLFE, nhlfe); | |
1375 | } | |
1376 | ||
1377 | ||
1378 | /* | |
1379 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1380 | */ |
d62a17ae | 1381 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1382 | { |
d62a17ae | 1383 | zebra_lsp_t *lsp; |
40c7bdb0 | 1384 | |
d62a17ae | 1385 | if (!nhlfe) |
1386 | return -1; | |
40c7bdb0 | 1387 | |
d62a17ae | 1388 | lsp = nhlfe->lsp; |
1389 | if (!lsp) | |
1390 | return -1; | |
40c7bdb0 | 1391 | |
d62a17ae | 1392 | if (nhlfe == lsp->best_nhlfe) |
1393 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1394 | |
ee70f629 | 1395 | /* Unlink from LSP */ |
cd4bb96f MS |
1396 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1397 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1398 | else | |
1399 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1400 | |
cd4bb96f MS |
1401 | nhlfe->lsp = NULL; |
1402 | ||
1403 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1404 | |
d62a17ae | 1405 | return 0; |
40c7bdb0 | 1406 | } |
1407 | ||
a64448ba DS |
1408 | /* |
1409 | * Update label for NHLFE entry. | |
1410 | */ | |
d62a17ae | 1411 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1412 | struct mpls_label_stack *nh_label) |
d62a17ae | 1413 | { |
1414 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1415 | } | |
1416 | ||
1417 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1418 | enum lsp_types_t type) | |
1419 | { | |
ee70f629 | 1420 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 1421 | int schedule_lsp = 0; |
1422 | char buf[BUFSIZ]; | |
1423 | ||
1424 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 1425 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1426 | /* Skip non-static NHLFEs */ |
1427 | if (nhlfe->type != type) | |
1428 | continue; | |
1429 | ||
1430 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1431 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1432 | zlog_debug( | |
1433 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1434 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1435 | } | |
1436 | ||
1437 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1438 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1439 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1440 | schedule_lsp = 1; | |
1441 | } else { | |
1442 | nhlfe_del(nhlfe); | |
1443 | } | |
1444 | } | |
1445 | ||
f2e7f4eb MS |
1446 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1447 | /* Skip non-static NHLFEs */ | |
1448 | if (nhlfe->type != type) | |
1449 | continue; | |
1450 | ||
1451 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1452 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1453 | zlog_debug( | |
1454 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1455 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1456 | } | |
1457 | ||
1458 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1459 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1460 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1461 | schedule_lsp = 1; | |
1462 | } else { | |
1463 | nhlfe_del(nhlfe); | |
1464 | } | |
1465 | } | |
1466 | ||
d62a17ae | 1467 | /* Queue LSP for processing, if needed, else delete. */ |
1468 | if (schedule_lsp) { | |
1469 | if (lsp_processq_add(lsp)) | |
1470 | return -1; | |
1323491d MS |
1471 | } else { |
1472 | lsp_check_free(lsp_table, &lsp); | |
1473 | } | |
d62a17ae | 1474 | |
1475 | return 0; | |
40c7bdb0 | 1476 | } |
1477 | ||
ce549947 RW |
1478 | /* |
1479 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1480 | * If no other NHLFEs exist, the entry would be deleted. | |
1481 | */ | |
d62a17ae | 1482 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1483 | mpls_label_t in_label) | |
ce549947 | 1484 | { |
d62a17ae | 1485 | struct hash *lsp_table; |
1486 | zebra_ile_t tmp_ile; | |
1487 | zebra_lsp_t *lsp; | |
ce549947 | 1488 | |
d62a17ae | 1489 | /* Lookup table. */ |
1490 | lsp_table = zvrf->lsp_table; | |
1491 | if (!lsp_table) | |
1492 | return -1; | |
ce549947 | 1493 | |
d62a17ae | 1494 | /* If entry is not present, exit. */ |
1495 | tmp_ile.in_label = in_label; | |
1496 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1497 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1498 | return 0; |
ce549947 | 1499 | |
d62a17ae | 1500 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1501 | } |
1502 | ||
d62a17ae | 1503 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1504 | { |
d62a17ae | 1505 | char buf[BUFSIZ]; |
1506 | json_object *json_nhlfe = NULL; | |
1507 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1508 | |
d62a17ae | 1509 | json_nhlfe = json_object_new_object(); |
1510 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1511 | json_object_int_add(json_nhlfe, "outLabel", | |
1512 | nexthop->nh_label->label[0]); | |
1513 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1514 | |
d62a17ae | 1515 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1516 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1517 | |
d62a17ae | 1518 | switch (nexthop->type) { |
1519 | case NEXTHOP_TYPE_IPV4: | |
1520 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1521 | json_object_string_add(json_nhlfe, "nexthop", | |
1522 | inet_ntoa(nexthop->gate.ipv4)); | |
1523 | break; | |
1524 | case NEXTHOP_TYPE_IPV6: | |
1525 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1526 | json_object_string_add( | |
1527 | json_nhlfe, "nexthop", | |
1528 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1529 | ||
1530 | if (nexthop->ifindex) | |
4a7371e9 DS |
1531 | json_object_string_add(json_nhlfe, "interface", |
1532 | ifindex2ifname(nexthop->ifindex, | |
1533 | nexthop->vrf_id)); | |
d62a17ae | 1534 | break; |
1535 | default: | |
1536 | break; | |
1537 | } | |
1538 | return json_nhlfe; | |
b78b820d | 1539 | } |
1540 | ||
3ab18ff2 | 1541 | /* |
1542 | * Print the NHLFE for a LSP forwarding entry. | |
1543 | */ | |
d62a17ae | 1544 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1545 | { | |
1546 | struct nexthop *nexthop; | |
a29c2887 | 1547 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1548 | |
1549 | nexthop = nhlfe->nexthop; | |
1550 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1551 | return; | |
1552 | ||
1553 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1554 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1555 | mpls_label2str(nexthop->nh_label->num_labels, |
1556 | nexthop->nh_label->label, | |
1557 | buf, sizeof(buf), 0), | |
d62a17ae | 1558 | nhlfe->distance); |
1559 | switch (nexthop->type) { | |
1560 | case NEXTHOP_TYPE_IPV4: | |
1561 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1562 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1563 | if (nexthop->ifindex) | |
1564 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1565 | ifindex2ifname(nexthop->ifindex, |
1566 | nexthop->vrf_id)); | |
d62a17ae | 1567 | break; |
1568 | case NEXTHOP_TYPE_IPV6: | |
1569 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1570 | vty_out(vty, " via %s", | |
1571 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1572 | if (nexthop->ifindex) | |
1573 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1574 | ifindex2ifname(nexthop->ifindex, |
1575 | nexthop->vrf_id)); | |
d62a17ae | 1576 | break; |
1577 | default: | |
1578 | break; | |
1579 | } | |
996c9314 LB |
1580 | vty_out(vty, "%s", |
1581 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1582 | : ""); | |
d62a17ae | 1583 | vty_out(vty, "\n"); |
3ab18ff2 | 1584 | } |
1585 | ||
1586 | /* | |
1587 | * Print an LSP forwarding entry. | |
1588 | */ | |
a29c2887 | 1589 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp) |
3ab18ff2 | 1590 | { |
a29c2887 MS |
1591 | zebra_nhlfe_t *nhlfe, *backup; |
1592 | int i; | |
3ab18ff2 | 1593 | |
d62a17ae | 1594 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1595 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1596 | : ""); | |
3ab18ff2 | 1597 | |
a29c2887 | 1598 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1599 | nhlfe_print(nhlfe, vty); |
a29c2887 MS |
1600 | |
1601 | if (nhlfe->nexthop && | |
1602 | CHECK_FLAG(nhlfe->nexthop->flags, | |
1603 | NEXTHOP_FLAG_HAS_BACKUP)) { | |
1604 | /* Find backup in backup list */ | |
1605 | ||
1606 | i = 0; | |
1607 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { | |
1608 | if (i == nhlfe->nexthop->backup_idx) | |
1609 | break; | |
1610 | i++; | |
1611 | } | |
1612 | ||
1613 | if (backup) { | |
1614 | vty_out(vty, " [backup %d]", i); | |
1615 | nhlfe_print(backup, vty); | |
1616 | } | |
1617 | } | |
1618 | } | |
3ab18ff2 | 1619 | } |
1620 | ||
1621 | /* | |
b78b820d | 1622 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1623 | */ |
d62a17ae | 1624 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1625 | { |
d62a17ae | 1626 | zebra_nhlfe_t *nhlfe = NULL; |
1627 | json_object *json = json_object_new_object(); | |
1628 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1629 | |
d62a17ae | 1630 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1631 | |
d62a17ae | 1632 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1633 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1634 | |
ee70f629 | 1635 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1636 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1637 | |
d62a17ae | 1638 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1639 | return json; | |
b78b820d | 1640 | } |
1641 | ||
1642 | ||
1643 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1644 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1645 | { |
d62a17ae | 1646 | unsigned int i; |
e3b78da8 | 1647 | struct hash_bucket *hb; |
d62a17ae | 1648 | struct list *sorted_list = list_new(); |
b78b820d | 1649 | |
d62a17ae | 1650 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1651 | |
d62a17ae | 1652 | for (i = 0; i < hash->size; i++) |
1653 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1654 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1655 | |
d62a17ae | 1656 | return sorted_list; |
3ab18ff2 | 1657 | } |
1658 | ||
7758e3f3 | 1659 | /* |
b78b820d | 1660 | * Compare two LSPs based on their label values. |
7758e3f3 | 1661 | */ |
e4a1ec74 | 1662 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1663 | { |
d62a17ae | 1664 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1665 | return -1; | |
7758e3f3 | 1666 | |
d62a17ae | 1667 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1668 | return 1; | |
7758e3f3 | 1669 | |
d62a17ae | 1670 | return 0; |
7758e3f3 | 1671 | } |
1672 | ||
1673 | /* | |
1674 | * Callback to allocate static LSP. | |
1675 | */ | |
d62a17ae | 1676 | static void *slsp_alloc(void *p) |
7758e3f3 | 1677 | { |
d62a17ae | 1678 | const zebra_ile_t *ile = p; |
1679 | zebra_slsp_t *slsp; | |
7758e3f3 | 1680 | |
d62a17ae | 1681 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1682 | slsp->ile = *ile; | |
ee70f629 MS |
1683 | snhlfe_list_init(&slsp->snhlfe_list); |
1684 | ||
d62a17ae | 1685 | return ((void *)slsp); |
7758e3f3 | 1686 | } |
1687 | ||
b78b820d | 1688 | /* |
1689 | * Compare two static LSPs based on their label values. | |
1690 | */ | |
e4a1ec74 | 1691 | static int slsp_cmp(const zebra_slsp_t *slsp1, const zebra_slsp_t *slsp2) |
b78b820d | 1692 | { |
d62a17ae | 1693 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1694 | return -1; | |
b78b820d | 1695 | |
d62a17ae | 1696 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1697 | return 1; | |
b78b820d | 1698 | |
d62a17ae | 1699 | return 0; |
b78b820d | 1700 | } |
1701 | ||
7758e3f3 | 1702 | /* |
1703 | * Check if static NHLFE matches with search info passed. | |
1704 | */ | |
d62a17ae | 1705 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1706 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1707 | { |
d62a17ae | 1708 | int cmp = 1; |
7758e3f3 | 1709 | |
d62a17ae | 1710 | if (snhlfe->gtype != gtype) |
1711 | return 1; | |
7758e3f3 | 1712 | |
d62a17ae | 1713 | switch (snhlfe->gtype) { |
1714 | case NEXTHOP_TYPE_IPV4: | |
1715 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1716 | sizeof(struct in_addr)); | |
1717 | break; | |
1718 | case NEXTHOP_TYPE_IPV6: | |
1719 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1720 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1721 | sizeof(struct in6_addr)); | |
1722 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1723 | cmp = !(snhlfe->ifindex == ifindex); | |
1724 | break; | |
1725 | default: | |
1726 | break; | |
1727 | } | |
7758e3f3 | 1728 | |
d62a17ae | 1729 | return cmp; |
7758e3f3 | 1730 | } |
1731 | ||
1732 | /* | |
1733 | * Locate static NHLFE that matches with passed info. | |
1734 | */ | |
d62a17ae | 1735 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1736 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1737 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1738 | { |
d62a17ae | 1739 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1740 | |
d62a17ae | 1741 | if (!slsp) |
1742 | return NULL; | |
7758e3f3 | 1743 | |
ee70f629 | 1744 | frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
d62a17ae | 1745 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) |
1746 | break; | |
1747 | } | |
7758e3f3 | 1748 | |
d62a17ae | 1749 | return snhlfe; |
7758e3f3 | 1750 | } |
1751 | ||
1752 | ||
1753 | /* | |
1754 | * Add static NHLFE. Base LSP config entry must have been created | |
1755 | * and duplicate check done. | |
1756 | */ | |
d62a17ae | 1757 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1758 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1759 | const union g_addr *gate, ifindex_t ifindex, |
d62a17ae | 1760 | mpls_label_t out_label) |
1761 | { | |
1762 | zebra_snhlfe_t *snhlfe; | |
1763 | ||
1764 | if (!slsp) | |
1765 | return NULL; | |
1766 | ||
1767 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1768 | snhlfe->slsp = slsp; | |
1769 | snhlfe->out_label = out_label; | |
1770 | snhlfe->gtype = gtype; | |
1771 | switch (gtype) { | |
1772 | case NEXTHOP_TYPE_IPV4: | |
1773 | snhlfe->gate.ipv4 = gate->ipv4; | |
1774 | break; | |
1775 | case NEXTHOP_TYPE_IPV6: | |
1776 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1777 | snhlfe->gate.ipv6 = gate->ipv6; | |
1778 | if (ifindex) | |
1779 | snhlfe->ifindex = ifindex; | |
1780 | break; | |
1781 | default: | |
1782 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1783 | return NULL; | |
1784 | } | |
1785 | ||
ee70f629 | 1786 | snhlfe_list_add_head(&slsp->snhlfe_list, snhlfe); |
d62a17ae | 1787 | |
1788 | return snhlfe; | |
7758e3f3 | 1789 | } |
1790 | ||
1791 | /* | |
1792 | * Delete static NHLFE. Entry must be present on list. | |
1793 | */ | |
d62a17ae | 1794 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1795 | { |
d62a17ae | 1796 | zebra_slsp_t *slsp; |
7758e3f3 | 1797 | |
d62a17ae | 1798 | if (!snhlfe) |
1799 | return -1; | |
7758e3f3 | 1800 | |
d62a17ae | 1801 | slsp = snhlfe->slsp; |
1802 | if (!slsp) | |
1803 | return -1; | |
7758e3f3 | 1804 | |
ee70f629 | 1805 | snhlfe_list_del(&slsp->snhlfe_list, snhlfe); |
7758e3f3 | 1806 | |
0a22ddfb | 1807 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); |
d62a17ae | 1808 | XFREE(MTYPE_SNHLFE, snhlfe); |
7758e3f3 | 1809 | |
d62a17ae | 1810 | return 0; |
7758e3f3 | 1811 | } |
1812 | ||
1813 | /* | |
1814 | * Delete all static NHLFE entries for this LSP (in label). | |
1815 | */ | |
d62a17ae | 1816 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1817 | { |
ee70f629 | 1818 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1819 | |
d62a17ae | 1820 | if (!slsp) |
1821 | return -1; | |
7758e3f3 | 1822 | |
ee70f629 | 1823 | frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
d62a17ae | 1824 | snhlfe_del(snhlfe); |
1825 | } | |
7758e3f3 | 1826 | |
d62a17ae | 1827 | return 0; |
7758e3f3 | 1828 | } |
1829 | ||
1830 | /* | |
1831 | * Create printable string for NHLFE configuration. | |
1832 | */ | |
d62a17ae | 1833 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1834 | { |
d62a17ae | 1835 | buf[0] = '\0'; |
1836 | switch (snhlfe->gtype) { | |
1837 | case NEXTHOP_TYPE_IPV4: | |
1838 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1839 | break; | |
1840 | case NEXTHOP_TYPE_IPV6: | |
1841 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1842 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1843 | if (snhlfe->ifindex) | |
eab4a5c2 QY |
1844 | strlcat(buf, |
1845 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT), | |
1846 | size); | |
d62a17ae | 1847 | break; |
1848 | default: | |
1849 | break; | |
1850 | } | |
7758e3f3 | 1851 | |
d62a17ae | 1852 | return buf; |
7758e3f3 | 1853 | } |
1854 | ||
40c7bdb0 | 1855 | /* |
1856 | * Initialize work queue for processing changed LSPs. | |
1857 | */ | |
2561d12e | 1858 | static int mpls_processq_init(void) |
40c7bdb0 | 1859 | { |
e2353ec2 DS |
1860 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1861 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1862 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1863 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1864 | return -1; |
1865 | } | |
40c7bdb0 | 1866 | |
e2353ec2 DS |
1867 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1868 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1869 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1870 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1871 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1872 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1873 | |
d62a17ae | 1874 | return 0; |
40c7bdb0 | 1875 | } |
1876 | ||
7758e3f3 | 1877 | |
7758e3f3 | 1878 | /* Public functions */ |
1879 | ||
d37f4d6c MS |
1880 | /* |
1881 | * Process LSP update results from zebra dataplane. | |
1882 | */ | |
1883 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1884 | { | |
1885 | struct zebra_vrf *zvrf; | |
1886 | zebra_ile_t tmp_ile; | |
1887 | struct hash *lsp_table; | |
1888 | zebra_lsp_t *lsp; | |
1889 | zebra_nhlfe_t *nhlfe; | |
1890 | struct nexthop *nexthop; | |
1891 | enum dplane_op_e op; | |
8841f96e | 1892 | enum zebra_dplane_result status; |
d37f4d6c MS |
1893 | |
1894 | op = dplane_ctx_get_op(ctx); | |
1895 | status = dplane_ctx_get_status(ctx); | |
1896 | ||
1897 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1898 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1899 | ctx, dplane_op2str(op), | |
1900 | dplane_ctx_get_in_label(ctx), | |
1901 | dplane_res2str(status)); | |
1902 | ||
1903 | switch (op) { | |
1904 | case DPLANE_OP_LSP_INSTALL: | |
1905 | case DPLANE_OP_LSP_UPDATE: | |
1906 | /* Look for zebra LSP object */ | |
1907 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1908 | if (zvrf == NULL) | |
1909 | break; | |
1910 | ||
1911 | lsp_table = zvrf->lsp_table; | |
1912 | ||
1913 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1914 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1915 | if (lsp == NULL) { | |
1916 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1917 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1918 | ctx, dplane_ctx_get_in_label(ctx)); | |
1919 | break; | |
1920 | } | |
1921 | ||
1922 | /* TODO -- Confirm that this result is still 'current' */ | |
1923 | ||
8841f96e | 1924 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1925 | /* Update zebra object */ |
1926 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
ee70f629 | 1927 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d37f4d6c MS |
1928 | nexthop = nhlfe->nexthop; |
1929 | if (!nexthop) | |
1930 | continue; | |
1931 | ||
1932 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1933 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1934 | } | |
1935 | } else { | |
1936 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1937 | clear_nhlfe_installed(lsp); | |
1938 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1939 | "LSP Install Failure: in-label %u", | |
1940 | lsp->ile.in_label); | |
1941 | } | |
1942 | ||
1943 | break; | |
1944 | ||
1945 | case DPLANE_OP_LSP_DELETE: | |
3fd385c6 DS |
1946 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) |
1947 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, | |
1948 | "LSP Deletion Failure: in-label %u", | |
1949 | dplane_ctx_get_in_label(ctx)); | |
d37f4d6c MS |
1950 | break; |
1951 | ||
1952 | default: | |
1953 | break; | |
1954 | ||
1955 | } /* Switch */ | |
1956 | ||
1957 | dplane_ctx_fini(&ctx); | |
1958 | } | |
1959 | ||
104e3ad9 MS |
1960 | /* |
1961 | * Process async dplane notifications. | |
1962 | */ | |
1963 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
1964 | { | |
1965 | struct zebra_vrf *zvrf; | |
1966 | zebra_ile_t tmp_ile; | |
1967 | struct hash *lsp_table; | |
1968 | zebra_lsp_t *lsp; | |
1969 | zebra_nhlfe_t *nhlfe; | |
ee70f629 | 1970 | const struct nhlfe_list_head *head; |
104e3ad9 MS |
1971 | const zebra_nhlfe_t *ctx_nhlfe; |
1972 | struct nexthop *nexthop; | |
1973 | const struct nexthop *ctx_nexthop; | |
1974 | int start_count = 0, end_count = 0; /* Installed counts */ | |
188a00e0 | 1975 | bool changed_p = false; |
104e3ad9 MS |
1976 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1977 | ||
1978 | if (is_debug) | |
1979 | zlog_debug("LSP dplane notif, in-label %u", | |
1980 | dplane_ctx_get_in_label(ctx)); | |
1981 | ||
1982 | /* Look for zebra LSP object */ | |
1983 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1984 | if (zvrf == NULL) | |
1985 | goto done; | |
1986 | ||
1987 | lsp_table = zvrf->lsp_table; | |
1988 | ||
1989 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1990 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1991 | if (lsp == NULL) { | |
1992 | if (is_debug) | |
1993 | zlog_debug("dplane LSP notif: in-label %u not found", | |
1994 | dplane_ctx_get_in_label(ctx)); | |
1995 | goto done; | |
1996 | } | |
1997 | ||
1998 | /* | |
1999 | * The dataplane/forwarding plane is notifying zebra about the state | |
188a00e0 MS |
2000 | * of the nexthops associated with this LSP. First, we take a |
2001 | * pre-scan pass to determine whether the LSP has transitioned | |
2002 | * from installed -> uninstalled. In that case, we need to have | |
2003 | * the existing state of the LSP objects available before making | |
2004 | * any changes. | |
104e3ad9 | 2005 | */ |
ee70f629 MS |
2006 | head = dplane_ctx_get_nhlfe_list(ctx); |
2007 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
104e3ad9 MS |
2008 | char buf[NEXTHOP_STRLEN]; |
2009 | ||
2010 | nexthop = nhlfe->nexthop; | |
2011 | if (!nexthop) | |
2012 | continue; | |
2013 | ||
2014 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2015 | start_count++; | |
2016 | ||
2017 | ctx_nexthop = NULL; | |
ee70f629 | 2018 | frr_each(nhlfe_list_const, head, ctx_nhlfe) { |
104e3ad9 MS |
2019 | ctx_nexthop = ctx_nhlfe->nexthop; |
2020 | if (!ctx_nexthop) | |
2021 | continue; | |
2022 | ||
2023 | if ((ctx_nexthop->type == nexthop->type) && | |
2024 | nexthop_same(ctx_nexthop, nexthop)) { | |
2025 | /* Matched */ | |
2026 | break; | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | if (is_debug) | |
2031 | nexthop2str(nexthop, buf, sizeof(buf)); | |
2032 | ||
2033 | if (ctx_nhlfe && ctx_nexthop) { | |
2034 | if (is_debug) { | |
2035 | const char *tstr = ""; | |
2036 | ||
2037 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
2038 | NHLFE_FLAG_INSTALLED)) | |
2039 | tstr = "not "; | |
2040 | ||
2041 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
2042 | buf, tstr); | |
2043 | } | |
2044 | ||
188a00e0 | 2045 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
2046 | if (CHECK_FLAG(ctx_nhlfe->flags, |
2047 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
2048 | |
2049 | if (!CHECK_FLAG(nhlfe->flags, | |
2050 | NHLFE_FLAG_INSTALLED)) | |
2051 | changed_p = true; | |
104e3ad9 MS |
2052 | |
2053 | /* Update counter */ | |
2054 | end_count++; | |
188a00e0 MS |
2055 | } else { |
2056 | ||
2057 | if (CHECK_FLAG(nhlfe->flags, | |
2058 | NHLFE_FLAG_INSTALLED)) | |
2059 | changed_p = true; | |
2060 | } | |
2061 | ||
2062 | } else { | |
2063 | /* Not mentioned in lfib set -> uninstalled */ | |
2064 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
2065 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
2066 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
2067 | changed_p = true; | |
2068 | } | |
2069 | ||
2070 | if (is_debug) | |
2071 | zlog_debug("LSP dplane notif: no match, nh %s", | |
2072 | buf); | |
2073 | } | |
2074 | } | |
2075 | ||
2076 | if (is_debug) | |
2077 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2078 | start_count, end_count, | |
2079 | changed_p ? ", changed" : ""); | |
2080 | ||
2081 | /* | |
2082 | * Has the LSP become uninstalled? | |
2083 | */ | |
2084 | if (start_count > 0 && end_count == 0) { | |
2085 | /* Inform other lfibs */ | |
2086 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2087 | } | |
2088 | ||
2089 | /* | |
2090 | * Now we take a second pass and bring the zebra | |
2091 | * nexthop state into sync with the forwarding-plane state. | |
2092 | */ | |
ee70f629 | 2093 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
188a00e0 MS |
2094 | char buf[NEXTHOP_STRLEN]; |
2095 | ||
2096 | nexthop = nhlfe->nexthop; | |
2097 | if (!nexthop) | |
2098 | continue; | |
2099 | ||
2100 | ctx_nexthop = NULL; | |
ee70f629 | 2101 | frr_each(nhlfe_list_const, head, ctx_nhlfe) { |
188a00e0 MS |
2102 | ctx_nexthop = ctx_nhlfe->nexthop; |
2103 | if (!ctx_nexthop) | |
2104 | continue; | |
2105 | ||
2106 | if ((ctx_nexthop->type == nexthop->type) && | |
2107 | nexthop_same(ctx_nexthop, nexthop)) { | |
2108 | /* Matched */ | |
2109 | break; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (is_debug) | |
2114 | nexthop2str(nexthop, buf, sizeof(buf)); | |
2115 | ||
2116 | if (ctx_nhlfe && ctx_nexthop) { | |
2117 | ||
2118 | /* Bring zebra nhlfe install state into sync */ | |
2119 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
2120 | NHLFE_FLAG_INSTALLED)) { | |
2121 | ||
2122 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
2123 | ||
2124 | } else { | |
2125 | ||
104e3ad9 | 2126 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
188a00e0 | 2127 | } |
104e3ad9 MS |
2128 | |
2129 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
2130 | NEXTHOP_FLAG_FIB)) { |
2131 | SET_FLAG(nhlfe->nexthop->flags, | |
2132 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2133 | SET_FLAG(nhlfe->nexthop->flags, |
2134 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2135 | } else { |
2136 | UNSET_FLAG(nhlfe->nexthop->flags, | |
2137 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2138 | UNSET_FLAG(nhlfe->nexthop->flags, |
2139 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2140 | } |
2141 | ||
104e3ad9 MS |
2142 | } else { |
2143 | /* Not mentioned in lfib set -> uninstalled */ | |
188a00e0 | 2144 | |
104e3ad9 MS |
2145 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
2146 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
188a00e0 | 2147 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2148 | } |
2149 | } | |
2150 | ||
188a00e0 | 2151 | if (end_count > 0) { |
104e3ad9 | 2152 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2153 | |
2154 | if (changed_p) | |
2155 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2156 | ||
2157 | } else { | |
104e3ad9 MS |
2158 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2159 | clear_nhlfe_installed(lsp); | |
2160 | } | |
2161 | ||
2162 | done: | |
2163 | dplane_ctx_fini(&ctx); | |
2164 | } | |
2165 | ||
a64448ba DS |
2166 | /* |
2167 | * Install dynamic LSP entry. | |
2168 | */ | |
d62a17ae | 2169 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2170 | struct route_entry *re) | |
a64448ba | 2171 | { |
d62a17ae | 2172 | struct route_table *table; |
2173 | zebra_fec_t *fec; | |
a64448ba | 2174 | |
d62a17ae | 2175 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2176 | if (!table) | |
2177 | return -1; | |
a64448ba | 2178 | |
d62a17ae | 2179 | /* See if there is a configured label binding for this FEC. */ |
2180 | fec = fec_find(table, &rn->p); | |
2181 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2182 | return 0; | |
a64448ba | 2183 | |
d62a17ae | 2184 | /* We cannot install a label forwarding entry if local label is the |
2185 | * implicit-null label. | |
2186 | */ | |
70e98a7f | 2187 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2188 | return 0; |
a64448ba | 2189 | |
d62a17ae | 2190 | if (lsp_install(zvrf, fec->label, rn, re)) |
2191 | return -1; | |
a64448ba | 2192 | |
d62a17ae | 2193 | return 0; |
a64448ba DS |
2194 | } |
2195 | ||
2196 | /* | |
2197 | * Uninstall dynamic LSP entry, if any. | |
2198 | */ | |
d62a17ae | 2199 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2200 | struct route_entry *re) | |
a64448ba | 2201 | { |
d62a17ae | 2202 | struct route_table *table; |
2203 | zebra_fec_t *fec; | |
a64448ba | 2204 | |
d62a17ae | 2205 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2206 | if (!table) | |
2207 | return -1; | |
a64448ba | 2208 | |
d62a17ae | 2209 | /* See if there is a configured label binding for this FEC. */ |
2210 | fec = fec_find(table, &rn->p); | |
2211 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2212 | return 0; | |
a64448ba | 2213 | |
d62a17ae | 2214 | /* Uninstall always removes all dynamic NHLFEs. */ |
2215 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2216 | } |
2217 | ||
d4cb23d7 | 2218 | /* |
cd4bb96f MS |
2219 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2220 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 MS |
2221 | */ |
2222 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2223 | enum lsp_types_t lsp_type, | |
2224 | enum nexthop_types_t gtype, | |
2225 | union g_addr *gate, | |
2226 | ifindex_t ifindex, | |
5065db0a | 2227 | uint8_t num_labels, |
cd4bb96f | 2228 | const mpls_label_t *out_labels) |
d4cb23d7 MS |
2229 | { |
2230 | /* Just a public pass-through to the internal implementation */ | |
5065db0a RW |
2231 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2232 | out_labels); | |
d4cb23d7 MS |
2233 | } |
2234 | ||
cd4bb96f MS |
2235 | /* |
2236 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2237 | * This path only changes the LSP object - nothing is scheduled for | |
2238 | * processing, for example. | |
2239 | */ | |
2240 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nhlfe(zebra_lsp_t *lsp, | |
2241 | enum lsp_types_t lsp_type, | |
2242 | enum nexthop_types_t gtype, | |
2243 | union g_addr *gate, | |
2244 | ifindex_t ifindex, | |
2245 | uint8_t num_labels, | |
2246 | const mpls_label_t *out_labels) | |
2247 | { | |
2248 | /* Just a public pass-through to the internal implementation */ | |
2249 | return nhlfe_backup_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, | |
2250 | out_labels); | |
2251 | } | |
2252 | ||
2253 | /* | |
2254 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2255 | */ | |
2256 | zebra_nhlfe_t *zebra_mpls_lsp_add_nh(zebra_lsp_t *lsp, | |
2257 | enum lsp_types_t lsp_type, | |
2258 | const struct nexthop *nh) | |
2259 | { | |
2260 | zebra_nhlfe_t *nhlfe; | |
2261 | ||
2262 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2263 | return NULL; | |
2264 | ||
2265 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
2266 | nh->nh_label->num_labels, nh->nh_label->label); | |
2267 | ||
2268 | return nhlfe; | |
2269 | } | |
2270 | ||
2271 | /* | |
2272 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2273 | * return the newly-added object. | |
2274 | */ | |
2275 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nh(zebra_lsp_t *lsp, | |
2276 | enum lsp_types_t lsp_type, | |
2277 | const struct nexthop *nh) | |
2278 | { | |
2279 | zebra_nhlfe_t *nhlfe; | |
2280 | ||
2281 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2282 | return NULL; | |
2283 | ||
2284 | nhlfe = nhlfe_backup_add(lsp, lsp_type, nh->type, &nh->gate, | |
2285 | nh->ifindex, nh->nh_label->num_labels, | |
2286 | nh->nh_label->label); | |
2287 | ||
2288 | return nhlfe; | |
2289 | } | |
2290 | ||
d4cb23d7 MS |
2291 | /* |
2292 | * Free an allocated NHLFE | |
2293 | */ | |
cd4bb96f | 2294 | void zebra_mpls_nhlfe_free(zebra_nhlfe_t *nhlfe) |
d4cb23d7 MS |
2295 | { |
2296 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2297 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2298 | } |
2299 | ||
5aba114a DS |
2300 | /* |
2301 | * Registration from a client for the label binding for a FEC. If a binding | |
2302 | * already exists, it is informed to the client. | |
28d58fd7 | 2303 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2304 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2305 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2306 | * is acceptable. If no label index then just register the specified label. |
2307 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2308 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2309 | */ |
d62a17ae | 2310 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2311 | uint32_t label, uint32_t label_index, |
2312 | struct zserv *client) | |
d62a17ae | 2313 | { |
2314 | struct route_table *table; | |
2315 | zebra_fec_t *fec; | |
2316 | char buf[BUFSIZ]; | |
57592a53 AD |
2317 | bool new_client; |
2318 | bool label_change = false; | |
d7c0a89a | 2319 | uint32_t old_label; |
57592a53 AD |
2320 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2321 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2322 | |
2323 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2324 | if (!table) | |
2325 | return -1; | |
2326 | ||
2327 | if (IS_ZEBRA_DEBUG_MPLS) | |
2328 | prefix2str(p, buf, BUFSIZ); | |
2329 | ||
57592a53 AD |
2330 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2331 | flog_err( | |
2332 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2333 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2334 | buf, label, label_index, | |
2335 | zebra_route_string(client->proto)); | |
2336 | return -1; | |
2337 | } | |
2338 | ||
d62a17ae | 2339 | /* Locate FEC */ |
2340 | fec = fec_find(table, p); | |
2341 | if (!fec) { | |
57592a53 | 2342 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2343 | if (!fec) { |
af4c2728 | 2344 | flog_err( |
e914ccbe | 2345 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2346 | "Failed to add FEC %s upon register, client %s", |
2347 | buf, zebra_route_string(client->proto)); | |
2348 | return -1; | |
2349 | } | |
2350 | ||
2351 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2352 | new_client = true; |
d62a17ae | 2353 | } else { |
57592a53 AD |
2354 | /* Check if the FEC has been statically defined in the config */ |
2355 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2356 | /* Client may register same FEC with different label index. */ |
2357 | new_client = | |
2358 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2359 | if (!new_client && fec->label_index == label_index |
2360 | && fec->label == label) | |
d62a17ae | 2361 | /* Duplicate register */ |
2362 | return 0; | |
2363 | ||
57592a53 | 2364 | /* Save current label, update the FEC */ |
d62a17ae | 2365 | old_label = fec->label; |
2366 | fec->label_index = label_index; | |
2367 | } | |
2368 | ||
2369 | if (new_client) | |
2370 | listnode_add(fec->client_list, client); | |
2371 | ||
2372 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2373 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2374 | have_label_index ? " index" : "", | |
2375 | have_label_index ? label_index : label, | |
2376 | new_client ? "registered" : "updated", | |
2377 | zebra_route_string(client->proto), | |
2378 | is_configured_fec | |
2379 | ? ", but using statically configured label" | |
2380 | : ""); | |
2381 | ||
2382 | /* If not a statically configured FEC, derive the local label | |
2383 | * from label index or use the provided label | |
d62a17ae | 2384 | */ |
57592a53 AD |
2385 | if (!is_configured_fec) { |
2386 | if (have_label_index) | |
2387 | fec_derive_label_from_index(zvrf, fec); | |
2388 | else | |
2389 | fec->label = label; | |
d62a17ae | 2390 | |
2391 | /* If no label change, exit. */ | |
2392 | if (fec->label == old_label) | |
2393 | return 0; | |
2394 | ||
57592a53 | 2395 | label_change = true; |
d62a17ae | 2396 | } |
2397 | ||
2398 | /* If new client or label change, update client and install or uninstall | |
2399 | * label forwarding entry as needed. | |
2400 | */ | |
2401 | /* Inform client of label, if needed. */ | |
2402 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2403 | if (IS_ZEBRA_DEBUG_MPLS) | |
2404 | zlog_debug("Update client label %u", fec->label); | |
2405 | fec_send(fec, client); | |
2406 | } | |
2407 | ||
2408 | if (new_client || label_change) | |
2409 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2410 | ||
2411 | return 0; | |
5aba114a DS |
2412 | } |
2413 | ||
2414 | /* | |
2415 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2416 | * itself is deleted if no other registered clients exist and there is no | |
2417 | * label bound to the FEC. | |
2418 | */ | |
d62a17ae | 2419 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2420 | struct zserv *client) | |
5aba114a | 2421 | { |
d62a17ae | 2422 | struct route_table *table; |
2423 | zebra_fec_t *fec; | |
2424 | char buf[BUFSIZ]; | |
5aba114a | 2425 | |
d62a17ae | 2426 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2427 | if (!table) | |
2428 | return -1; | |
5aba114a | 2429 | |
d62a17ae | 2430 | if (IS_ZEBRA_DEBUG_MPLS) |
2431 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2432 | |
d62a17ae | 2433 | fec = fec_find(table, p); |
2434 | if (!fec) { | |
2435 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2436 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
2437 | "Failed to find FEC %s upon unregister, client %s", |
2438 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 2439 | return -1; |
2440 | } | |
5aba114a | 2441 | |
d62a17ae | 2442 | listnode_delete(fec->client_list, client); |
2443 | ||
2444 | if (IS_ZEBRA_DEBUG_MPLS) | |
2445 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2446 | zebra_route_string(client->proto)); | |
2447 | ||
2448 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2449 | * deleting, see if any LSP needs to be uninstalled. | |
2450 | */ | |
2451 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2452 | && list_isempty(fec->client_list)) { | |
2453 | mpls_label_t old_label = fec->label; | |
2454 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2455 | fec_change_update_lsp(zvrf, fec, old_label); | |
2456 | fec_del(fec); | |
2457 | } | |
5aba114a | 2458 | |
d62a17ae | 2459 | return 0; |
5aba114a DS |
2460 | } |
2461 | ||
2462 | /* | |
2463 | * Cleanup any FECs registered by this client. | |
2464 | */ | |
453844ab | 2465 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2466 | { |
453844ab | 2467 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2468 | struct route_node *rn; |
2469 | zebra_fec_t *fec; | |
2470 | struct listnode *node; | |
2471 | struct zserv *fec_client; | |
2472 | int af; | |
2473 | ||
2474 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2475 | if (zvrf->fec_table[af] == NULL) | |
2476 | continue; | |
2477 | ||
2478 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2479 | rn = route_next(rn)) { | |
2480 | fec = rn->info; | |
2481 | if (!fec || list_isempty(fec->client_list)) | |
2482 | continue; | |
2483 | ||
2484 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2485 | fec_client)) { | |
2486 | if (fec_client == client) { | |
2487 | listnode_delete(fec->client_list, | |
2488 | fec_client); | |
2489 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2490 | && list_isempty(fec->client_list)) | |
2491 | fec_del(fec); | |
2492 | break; | |
2493 | } | |
2494 | } | |
2495 | } | |
2496 | } | |
5aba114a | 2497 | |
d62a17ae | 2498 | return 0; |
5aba114a DS |
2499 | } |
2500 | ||
651105b5 RW |
2501 | struct lsp_uninstall_args { |
2502 | struct hash *lsp_table; | |
2503 | enum lsp_types_t type; | |
2504 | }; | |
2505 | ||
2506 | /* | |
2507 | * Cleanup MPLS labels registered by this client. | |
2508 | */ | |
2509 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2510 | { | |
2511 | struct vrf *vrf; | |
2512 | struct zebra_vrf *zvrf; | |
2513 | ||
2514 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2515 | struct lsp_uninstall_args args; | |
2516 | ||
2517 | zvrf = vrf->info; | |
2518 | if (!zvrf) | |
2519 | continue; | |
2520 | ||
2521 | /* Cleanup LSPs. */ | |
2522 | args.lsp_table = zvrf->lsp_table; | |
2523 | args.type = lsp_type_from_re_type(client->proto); | |
2524 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2525 | &args); | |
2526 | ||
2527 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2528 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2529 | lsp_type_from_re_type(client->proto)); | |
2530 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2531 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2532 | } |
2533 | ||
2534 | return 0; | |
2535 | } | |
2536 | ||
f31e084c DS |
2537 | /* |
2538 | * Return FEC (if any) to which this label is bound. | |
2539 | * Note: Only works for per-prefix binding and when the label is not | |
2540 | * implicit-null. | |
2541 | * TODO: Currently walks entire table, can optimize later with another | |
2542 | * hash.. | |
2543 | */ | |
d62a17ae | 2544 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2545 | mpls_label_t label) | |
2546 | { | |
2547 | struct route_node *rn; | |
2548 | zebra_fec_t *fec; | |
2549 | int af; | |
2550 | ||
2551 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2552 | if (zvrf->fec_table[af] == NULL) | |
2553 | continue; | |
2554 | ||
2555 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2556 | rn = route_next(rn)) { | |
2557 | if (!rn->info) | |
2558 | continue; | |
2559 | fec = rn->info; | |
2560 | if (fec->label == label) | |
2561 | return fec; | |
2562 | } | |
2563 | } | |
f31e084c | 2564 | |
d62a17ae | 2565 | return NULL; |
f31e084c DS |
2566 | } |
2567 | ||
2568 | /* | |
2569 | * Inform if specified label is currently bound to a FEC or not. | |
2570 | */ | |
d62a17ae | 2571 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2572 | { |
d62a17ae | 2573 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2574 | } |
2575 | ||
2576 | /* | |
5aba114a | 2577 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2578 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2579 | * label forwarding entry. | |
9d303b37 | 2580 | */ |
d62a17ae | 2581 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2582 | mpls_label_t in_label) | |
2583 | { | |
2584 | struct route_table *table; | |
2585 | zebra_fec_t *fec; | |
2586 | char buf[BUFSIZ]; | |
2587 | mpls_label_t old_label; | |
2588 | int ret = 0; | |
2589 | ||
2590 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2591 | if (!table) | |
2592 | return -1; | |
2593 | ||
2594 | if (IS_ZEBRA_DEBUG_MPLS) | |
2595 | prefix2str(p, buf, BUFSIZ); | |
2596 | ||
2597 | /* Update existing FEC or create a new one. */ | |
2598 | fec = fec_find(table, p); | |
2599 | if (!fec) { | |
2600 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2601 | MPLS_INVALID_LABEL_INDEX); | |
2602 | if (!fec) { | |
2603 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2604 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2605 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2606 | return -1; |
2607 | } | |
2608 | ||
2609 | if (IS_ZEBRA_DEBUG_MPLS) | |
2610 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2611 | } else { | |
2612 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2613 | if (fec->label == in_label) | |
2614 | /* Duplicate config */ | |
2615 | return 0; | |
2616 | ||
2617 | /* Label change, update clients. */ | |
2618 | old_label = fec->label; | |
2619 | if (IS_ZEBRA_DEBUG_MPLS) | |
2620 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2621 | ||
2622 | fec->label = in_label; | |
2623 | fec_update_clients(fec); | |
2624 | ||
2625 | /* Update label forwarding entries appropriately */ | |
2626 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2627 | } | |
2628 | ||
2629 | return ret; | |
f31e084c DS |
2630 | } |
2631 | ||
2632 | /* | |
5aba114a DS |
2633 | * Remove static FEC to label binding. If there are no clients registered |
2634 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2635 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2636 | * client may need to be updated with derived label. | |
f31e084c | 2637 | */ |
d62a17ae | 2638 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2639 | { | |
2640 | struct route_table *table; | |
2641 | zebra_fec_t *fec; | |
2642 | mpls_label_t old_label; | |
2643 | char buf[BUFSIZ]; | |
2644 | ||
2645 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2646 | if (!table) | |
2647 | return -1; | |
2648 | ||
2649 | fec = fec_find(table, p); | |
2650 | if (!fec) { | |
2651 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2652 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2653 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2654 | return -1; |
2655 | } | |
2656 | ||
2657 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2658 | prefix2str(p, buf, BUFSIZ); | |
57592a53 AD |
2659 | zlog_debug("Delete fec %s label %u label index %u", buf, |
2660 | fec->label, fec->label_index); | |
d62a17ae | 2661 | } |
2662 | ||
2663 | old_label = fec->label; | |
2664 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2665 | fec->label = MPLS_INVALID_LABEL; | |
2666 | ||
2667 | /* If no client exists, just delete the FEC. */ | |
2668 | if (list_isempty(fec->client_list)) { | |
2669 | fec_del(fec); | |
2670 | return 0; | |
2671 | } | |
2672 | ||
2673 | /* Derive the local label (from label index) or reset it. */ | |
2674 | fec_derive_label_from_index(zvrf, fec); | |
2675 | ||
2676 | /* If there is a label change, update clients. */ | |
2677 | if (fec->label == old_label) | |
2678 | return 0; | |
2679 | fec_update_clients(fec); | |
2680 | ||
2681 | /* Update label forwarding entries appropriately */ | |
2682 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2683 | } |
2684 | ||
2685 | /* | |
2686 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2687 | */ | |
d62a17ae | 2688 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2689 | { |
d62a17ae | 2690 | struct route_node *rn; |
2691 | int af; | |
2692 | zebra_fec_t *fec; | |
2693 | char buf[BUFSIZ]; | |
2694 | int write = 0; | |
f31e084c | 2695 | |
d62a17ae | 2696 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2697 | if (zvrf->fec_table[af] == NULL) | |
2698 | continue; | |
f31e084c | 2699 | |
d62a17ae | 2700 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2701 | rn = route_next(rn)) { | |
2702 | if (!rn->info) | |
2703 | continue; | |
f31e084c | 2704 | |
d62a17ae | 2705 | char lstr[BUFSIZ]; |
2706 | fec = rn->info; | |
f31e084c | 2707 | |
d62a17ae | 2708 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2709 | continue; | |
f31e084c | 2710 | |
d62a17ae | 2711 | write = 1; |
2712 | prefix2str(&rn->p, buf, BUFSIZ); | |
2713 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2714 | label2str(fec->label, lstr, BUFSIZ)); | |
2715 | } | |
2716 | } | |
f31e084c | 2717 | |
d62a17ae | 2718 | return write; |
f31e084c DS |
2719 | } |
2720 | ||
2721 | /* | |
2722 | * Display MPLS FEC to label binding (VTY command handler). | |
2723 | */ | |
d62a17ae | 2724 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2725 | { |
d62a17ae | 2726 | struct route_node *rn; |
2727 | int af; | |
f31e084c | 2728 | |
d62a17ae | 2729 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2730 | if (zvrf->fec_table[af] == NULL) | |
2731 | continue; | |
f31e084c | 2732 | |
d62a17ae | 2733 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2734 | rn = route_next(rn)) { | |
2735 | if (!rn->info) | |
2736 | continue; | |
2737 | fec_print(rn->info, vty); | |
2738 | } | |
2739 | } | |
f31e084c DS |
2740 | } |
2741 | ||
2742 | /* | |
2743 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2744 | */ | |
d62a17ae | 2745 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2746 | struct prefix *p) | |
f31e084c | 2747 | { |
d62a17ae | 2748 | struct route_table *table; |
2749 | struct route_node *rn; | |
f31e084c | 2750 | |
d62a17ae | 2751 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2752 | if (!table) | |
2753 | return; | |
f31e084c | 2754 | |
d62a17ae | 2755 | apply_mask(p); |
2756 | rn = route_node_lookup(table, p); | |
2757 | if (!rn) | |
2758 | return; | |
f31e084c | 2759 | |
d62a17ae | 2760 | route_unlock_node(rn); |
2761 | if (!rn->info) | |
2762 | return; | |
f31e084c | 2763 | |
d62a17ae | 2764 | fec_print(rn->info, vty); |
f31e084c DS |
2765 | } |
2766 | ||
f2e7f4eb MS |
2767 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2768 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2769 | { |
2770 | struct nhg_hash_entry *nhe; | |
2771 | ||
f2e7f4eb | 2772 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2773 | |
5463ce26 | 2774 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2775 | } |
2776 | ||
f2e7f4eb MS |
2777 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2778 | enum lsp_types_t type, | |
2779 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2780 | { |
f2e7f4eb MS |
2781 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2782 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2783 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2784 | nexthop_del_labels(nexthop); |
2785 | else | |
2786 | return false; | |
2787 | ||
2788 | return true; | |
2789 | } | |
2790 | ||
f2e7f4eb MS |
2791 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2792 | struct prefix *prefix, uint8_t route_type, | |
2793 | unsigned short route_instance) | |
d62a17ae | 2794 | { |
2795 | struct route_table *table; | |
2796 | struct route_node *rn; | |
2797 | struct route_entry *re; | |
2798 | struct nexthop *nexthop; | |
f2e7f4eb | 2799 | struct nhg_hash_entry *new_nhe; |
da137142 | 2800 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2801 | |
2802 | /* Lookup table. */ | |
da137142 | 2803 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2804 | if (!table) |
2805 | return -1; | |
2806 | ||
2807 | /* Lookup existing route */ | |
2808 | rn = route_node_get(table, prefix); | |
a2addae8 | 2809 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2810 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2811 | continue; | |
e132dea0 | 2812 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2813 | break; |
88d88a9c | 2814 | } |
d62a17ae | 2815 | if (re == NULL) |
2816 | return -1; | |
2817 | ||
da137142 | 2818 | /* |
f2e7f4eb MS |
2819 | * Nexthops are now shared by multiple routes, so we have to make |
2820 | * a local copy, modify the copy, then update the route. | |
da137142 | 2821 | */ |
f2e7f4eb | 2822 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2823 | |
f2e7f4eb MS |
2824 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2825 | nexthop_del_labels(nexthop); | |
2826 | ||
2827 | /* Update backup routes/nexthops also, if present. */ | |
2828 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2829 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2830 | nexthop = nexthop->next) | |
2831 | nexthop_del_labels(nexthop); | |
2832 | } | |
2833 | ||
2834 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2835 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2836 | ||
2837 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
2838 | ||
2839 | zebra_nhg_free(new_nhe); | |
2840 | ||
2841 | rib_queue_add(rn); | |
2842 | ||
2843 | return 0; | |
2844 | } | |
2845 | ||
2846 | /* | |
2847 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2848 | * update its labels according to 'add_p', and return 'true' if successful. | |
2849 | */ | |
2850 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2851 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2852 | { | |
2853 | bool found = false, success = false; | |
2854 | struct nexthop *nexthop; | |
2855 | ||
2856 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2857 | switch (nexthop->type) { |
2858 | case NEXTHOP_TYPE_IPV4: | |
2859 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2860 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2861 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2862 | continue; |
f2e7f4eb MS |
2863 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2864 | &znh->gate.ipv4)) | |
d62a17ae | 2865 | continue; |
2866 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2867 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2868 | continue; |
f2e7f4eb | 2869 | |
8f77d0ee | 2870 | found = true; |
f2e7f4eb MS |
2871 | |
2872 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2873 | break; | |
2874 | ||
2875 | success = true; | |
8f77d0ee | 2876 | break; |
d62a17ae | 2877 | case NEXTHOP_TYPE_IPV6: |
2878 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2879 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2880 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2881 | continue; |
f2e7f4eb MS |
2882 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2883 | &znh->gate.ipv6)) | |
d62a17ae | 2884 | continue; |
2885 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2886 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2887 | continue; |
f2e7f4eb | 2888 | |
8f77d0ee | 2889 | found = true; |
f2e7f4eb MS |
2890 | |
2891 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2892 | break; | |
2893 | success = true; | |
8f77d0ee | 2894 | break; |
d62a17ae | 2895 | default: |
2896 | break; | |
2897 | } | |
f2e7f4eb MS |
2898 | |
2899 | if (found) | |
2900 | break; | |
d62a17ae | 2901 | } |
d62a17ae | 2902 | |
f2e7f4eb MS |
2903 | return success; |
2904 | } | |
19474c9c | 2905 | |
f2e7f4eb MS |
2906 | /* |
2907 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2908 | * using zapi message info. | |
2909 | * There are several changes that need to be made, in several zebra | |
2910 | * data structures, so we want to do all the work required at once. | |
2911 | */ | |
2912 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2913 | const struct zapi_labels *zl) | |
2914 | { | |
2915 | int i, counter, ret = 0; | |
2916 | char buf[NEXTHOP_STRLEN], prefix_buf[PREFIX_STRLEN]; | |
2917 | const struct zapi_nexthop *znh; | |
2918 | struct route_table *table; | |
2919 | struct route_node *rn = NULL; | |
2920 | struct route_entry *re = NULL; | |
2921 | struct nhg_hash_entry *new_nhe = NULL; | |
2922 | bool found; | |
2923 | afi_t afi = AFI_IP; | |
2924 | const struct prefix *prefix = NULL; | |
2925 | struct hash *lsp_table; | |
2926 | zebra_ile_t tmp_ile; | |
2927 | zebra_lsp_t *lsp = NULL; | |
19474c9c | 2928 | |
f2e7f4eb MS |
2929 | /* Prep LSP for add case */ |
2930 | if (add_p) { | |
2931 | /* Lookup table. */ | |
2932 | lsp_table = zvrf->lsp_table; | |
2933 | if (!lsp_table) | |
2934 | return -1; | |
2935 | ||
2936 | /* Find or create LSP object */ | |
2937 | tmp_ile.in_label = zl->local_label; | |
2938 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2939 | if (!lsp) | |
2940 | return -1; | |
da137142 SW |
2941 | } |
2942 | ||
f2e7f4eb MS |
2943 | /* Prep for route/FEC update if requested */ |
2944 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2945 | prefix = &zl->route.prefix; | |
da137142 | 2946 | |
f2e7f4eb | 2947 | afi = family2afi(prefix->family); |
ce549947 | 2948 | |
f2e7f4eb MS |
2949 | /* Lookup table. */ |
2950 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2951 | if (table) { | |
2952 | /* Lookup existing route */ | |
2953 | rn = route_node_get(table, prefix); | |
2954 | RNODE_FOREACH_RE(rn, re) { | |
2955 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2956 | continue; | |
2957 | if (re->type == zl->route.type && | |
2958 | re->instance == zl->route.instance) | |
2959 | break; | |
2960 | } | |
2961 | } | |
ea6b290b | 2962 | |
f2e7f4eb MS |
2963 | if (re) { |
2964 | /* | |
2965 | * Copy over current nexthops into a temporary group. | |
2966 | * We can't just change the values here since the nhgs | |
2967 | * are shared and if the labels change, we'll need | |
2968 | * to find or create a new nhg. We need to create | |
2969 | * a whole temporary group, make changes to it, | |
2970 | * then attach that to the route. | |
2971 | */ | |
2972 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2973 | |
f2e7f4eb MS |
2974 | } else { |
2975 | /* | |
2976 | * The old version of the zapi code | |
2977 | * attempted to manage LSPs before trying to | |
2978 | * find a route/FEC, so we'll continue that way. | |
2979 | */ | |
2980 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2981 | prefix2str(prefix, prefix_buf, | |
2982 | sizeof(prefix_buf)); | |
2983 | zlog_debug("%s: FTN update requested: no route for prefix %s", | |
2984 | __func__, prefix_buf); | |
2985 | } | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | /* | |
2990 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2991 | */ | |
2992 | ||
2993 | counter = 0; | |
2994 | for (i = 0; i < zl->nexthop_num; i++) { | |
2995 | ||
2996 | znh = &zl->nexthops[i]; | |
2997 | ||
2998 | /* Attempt LSP update */ | |
2999 | if (add_p) | |
3000 | ret = lsp_znh_install(lsp, zl->type, znh); | |
3001 | else | |
3002 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
3003 | zl->local_label, znh->type, | |
3004 | &znh->gate, znh->ifindex); | |
3005 | if (ret < 0) { | |
3006 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
3007 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3008 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
3009 | __func__, (add_p ? "" : "un"), | |
3010 | zl->local_label, buf); | |
3011 | } | |
ea6b290b | 3012 | continue; |
f2e7f4eb MS |
3013 | } |
3014 | ||
3015 | /* Attempt route/FEC update if requested */ | |
3016 | if (re == NULL) | |
3017 | continue; | |
3018 | ||
3019 | /* Search the route's nexthops for a match, and update it. */ | |
3020 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
3021 | znh); | |
3022 | if (found) { | |
3023 | counter++; | |
3024 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3025 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3026 | prefix2str(prefix, prefix_buf, sizeof(prefix_buf)); | |
3027 | zlog_debug("%s: Unable to update FEC: prefix %s, label %u, znh %s", | |
3028 | __func__, prefix_buf, zl->local_label, buf); | |
3029 | } | |
ea6b290b | 3030 | } |
ea6b290b | 3031 | |
f2e7f4eb MS |
3032 | /* |
3033 | * Process backup LSPs/nexthop entries also. We associate backup | |
3034 | * LSP info with backup nexthops. | |
3035 | */ | |
3036 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
3037 | goto znh_done; | |
19474c9c | 3038 | |
f2e7f4eb | 3039 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 3040 | |
f2e7f4eb | 3041 | znh = &zl->backup_nexthops[i]; |
19474c9c | 3042 | |
f2e7f4eb MS |
3043 | if (add_p) |
3044 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
3045 | else | |
3046 | ret = lsp_backup_uninstall(zvrf, zl->type, | |
3047 | zl->local_label, | |
3048 | znh->type, &znh->gate, | |
3049 | znh->ifindex); | |
3050 | ||
3051 | if (ret < 0) { | |
3052 | if (IS_ZEBRA_DEBUG_RECV || | |
3053 | IS_ZEBRA_DEBUG_MPLS) { | |
3054 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3055 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
3056 | __func__, (add_p ? "" : "un"), | |
3057 | zl->local_label, buf); | |
3058 | } | |
3059 | continue; | |
3060 | } | |
19474c9c | 3061 | |
f2e7f4eb MS |
3062 | /* Attempt backup nexthop/FEC update if requested */ |
3063 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
3064 | continue; | |
19474c9c | 3065 | |
f2e7f4eb MS |
3066 | /* Search the route's backup nexthops for a match |
3067 | * and update it. | |
3068 | */ | |
3069 | found = ftn_update_znh(add_p, zl->type, | |
3070 | new_nhe->backup_info->nhe->nhg.nexthop, | |
3071 | znh); | |
3072 | if (found) { | |
3073 | counter++; | |
3074 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3075 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3076 | prefix2str(prefix, prefix_buf, sizeof(prefix_buf)); | |
3077 | zlog_debug("%s: Unable to update backup FEC: prefix %s, label %u, znh %s", | |
3078 | __func__, prefix_buf, zl->local_label, buf); | |
3079 | } | |
3080 | } | |
ea6b290b | 3081 | |
f2e7f4eb MS |
3082 | znh_done: |
3083 | ||
3084 | /* | |
3085 | * If we made changes, update the route, and schedule it | |
3086 | * for rib processing | |
3087 | */ | |
3088 | if (re != NULL && counter > 0) { | |
3089 | assert(rn != NULL); | |
3090 | ||
3091 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3092 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3093 | ||
3094 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3095 | ||
3096 | rib_queue_add(rn); | |
3097 | } | |
3098 | ||
3099 | if (new_nhe) | |
3100 | zebra_nhg_free(new_nhe); | |
3101 | ||
3102 | return ret; | |
ea6b290b RW |
3103 | } |
3104 | ||
ce549947 RW |
3105 | /* |
3106 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3107 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3108 | * the out-label for an existing NHLFE (update case). | |
3109 | */ | |
cd4bb96f MS |
3110 | static zebra_nhlfe_t * |
3111 | lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3112 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3113 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3114 | ifindex_t ifindex) | |
d62a17ae | 3115 | { |
d62a17ae | 3116 | zebra_nhlfe_t *nhlfe; |
cd4bb96f | 3117 | char buf[MPLS_LABEL_STRLEN]; |
e4a1ec74 | 3118 | |
ee70f629 | 3119 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex); |
d62a17ae | 3120 | if (nhlfe) { |
3121 | struct nexthop *nh = nhlfe->nexthop; | |
3122 | ||
3123 | assert(nh); | |
3124 | assert(nh->nh_label); | |
3125 | ||
3126 | /* Clear deleted flag (in case it was set) */ | |
3127 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
5065db0a RW |
3128 | if (nh->nh_label->num_labels == num_out_labels |
3129 | && !memcmp(nh->nh_label->label, out_labels, | |
3130 | sizeof(mpls_label_t) * num_out_labels)) | |
d62a17ae | 3131 | /* No change */ |
cd4bb96f | 3132 | return nhlfe; |
d62a17ae | 3133 | |
3134 | if (IS_ZEBRA_DEBUG_MPLS) { | |
e4a1ec74 MS |
3135 | char buf2[MPLS_LABEL_STRLEN]; |
3136 | char buf3[MPLS_LABEL_STRLEN]; | |
5065db0a | 3137 | |
cd4bb96f | 3138 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
5065db0a RW |
3139 | mpls_label2str(num_out_labels, out_labels, buf2, |
3140 | sizeof(buf2), 0); | |
3141 | mpls_label2str(nh->nh_label->num_labels, | |
3142 | nh->nh_label->label, buf3, sizeof(buf3), | |
3143 | 0); | |
3144 | ||
cd4bb96f MS |
3145 | zlog_debug("LSP in-label %u type %d nexthop %s out-label(s) changed to %s (old %s)", |
3146 | lsp->ile.in_label, type, buf, buf2, buf3); | |
d62a17ae | 3147 | } |
3148 | ||
5065db0a RW |
3149 | /* Update out label(s), trigger processing. */ |
3150 | if (nh->nh_label->num_labels == num_out_labels) | |
3151 | memcpy(nh->nh_label->label, out_labels, | |
3152 | sizeof(mpls_label_t) * num_out_labels); | |
3153 | else { | |
3154 | nexthop_del_labels(nh); | |
3155 | nexthop_add_labels(nh, type, num_out_labels, | |
3156 | out_labels); | |
3157 | } | |
d62a17ae | 3158 | } else { |
3159 | /* Add LSP entry to this nexthop */ | |
5065db0a RW |
3160 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3161 | num_out_labels, out_labels); | |
d62a17ae | 3162 | if (!nhlfe) |
cd4bb96f | 3163 | return NULL; |
d62a17ae | 3164 | |
3165 | if (IS_ZEBRA_DEBUG_MPLS) { | |
cd4bb96f | 3166 | char buf2[MPLS_LABEL_STRLEN]; |
5065db0a | 3167 | |
cd4bb96f | 3168 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
5065db0a RW |
3169 | mpls_label2str(num_out_labels, out_labels, buf2, |
3170 | sizeof(buf2), 0); | |
3171 | ||
cd4bb96f MS |
3172 | zlog_debug("Add LSP in-label %u type %d nexthop %s out-label(s) %s", |
3173 | lsp->ile.in_label, type, buf, buf2); | |
d62a17ae | 3174 | } |
3175 | ||
3176 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3177 | } | |
3178 | ||
3179 | /* Mark NHLFE, queue LSP for processing. */ | |
3180 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
cd4bb96f MS |
3181 | |
3182 | return nhlfe; | |
3183 | } | |
3184 | ||
3185 | /* | |
3186 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3187 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3188 | * the out-label for an existing NHLFE (update case). | |
3189 | */ | |
3190 | static zebra_nhlfe_t * | |
3191 | lsp_add_backup_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3192 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3193 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3194 | ifindex_t ifindex) | |
3195 | { | |
3196 | zebra_nhlfe_t *nhlfe; | |
3197 | char buf[MPLS_LABEL_STRLEN]; | |
3198 | ||
3199 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, gate, ifindex); | |
3200 | if (nhlfe) { | |
3201 | struct nexthop *nh = nhlfe->nexthop; | |
3202 | ||
3203 | assert(nh); | |
3204 | assert(nh->nh_label); | |
3205 | ||
3206 | /* Clear deleted flag (in case it was set) */ | |
3207 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3208 | if (nh->nh_label->num_labels == num_out_labels | |
3209 | && !memcmp(nh->nh_label->label, out_labels, | |
3210 | sizeof(mpls_label_t) * num_out_labels)) | |
3211 | /* No change */ | |
3212 | return nhlfe; | |
3213 | ||
3214 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3215 | char buf2[MPLS_LABEL_STRLEN]; | |
3216 | char buf3[MPLS_LABEL_STRLEN]; | |
3217 | ||
3218 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3219 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3220 | sizeof(buf2), 0); | |
3221 | mpls_label2str(nh->nh_label->num_labels, | |
3222 | nh->nh_label->label, buf3, sizeof(buf3), | |
3223 | 0); | |
3224 | ||
3225 | zlog_debug("LSP in-label %u type %d backup nexthop %s out-label(s) changed to %s (old %s)", | |
3226 | lsp->ile.in_label, type, buf, buf2, buf3); | |
3227 | } | |
3228 | ||
3229 | /* Update out label(s), trigger processing. */ | |
3230 | if (nh->nh_label->num_labels == num_out_labels) | |
3231 | memcpy(nh->nh_label->label, out_labels, | |
3232 | sizeof(mpls_label_t) * num_out_labels); | |
3233 | else { | |
3234 | nexthop_del_labels(nh); | |
3235 | nexthop_add_labels(nh, type, num_out_labels, | |
3236 | out_labels); | |
3237 | } | |
3238 | } else { | |
3239 | /* Add LSP entry to this nexthop */ | |
3240 | nhlfe = nhlfe_backup_add(lsp, type, gtype, gate, ifindex, | |
3241 | num_out_labels, out_labels); | |
3242 | if (!nhlfe) | |
3243 | return NULL; | |
3244 | ||
3245 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3246 | char buf2[MPLS_LABEL_STRLEN]; | |
3247 | ||
3248 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3249 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3250 | sizeof(buf2), 0); | |
3251 | ||
3252 | zlog_debug("Add LSP in-label %u type %d backup nexthop %s out-label(s) %s", | |
3253 | lsp->ile.in_label, type, buf, buf2); | |
3254 | } | |
3255 | ||
3256 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3257 | } | |
3258 | ||
3259 | /* Mark NHLFE, queue LSP for processing. */ | |
3260 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3261 | ||
3262 | return nhlfe; | |
3263 | } | |
3264 | ||
3265 | /* | |
3266 | * Install an LSP and forwarding entry; used primarily | |
3267 | * from zapi message processing. | |
3268 | */ | |
3269 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3270 | mpls_label_t in_label, uint8_t num_out_labels, | |
3271 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3272 | const union g_addr *gate, ifindex_t ifindex) | |
3273 | { | |
3274 | struct hash *lsp_table; | |
3275 | zebra_ile_t tmp_ile; | |
3276 | zebra_lsp_t *lsp; | |
3277 | zebra_nhlfe_t *nhlfe; | |
3278 | ||
3279 | /* Lookup table. */ | |
3280 | lsp_table = zvrf->lsp_table; | |
3281 | if (!lsp_table) | |
3282 | return -1; | |
3283 | ||
3284 | /* Find or create LSP object */ | |
3285 | tmp_ile.in_label = in_label; | |
3286 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3287 | if (!lsp) | |
3288 | return -1; | |
3289 | ||
3290 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
3291 | gate, ifindex); | |
3292 | if (nhlfe == NULL) | |
3293 | return -1; | |
3294 | ||
3295 | /* Queue LSP for processing. */ | |
3296 | if (lsp_processq_add(lsp)) | |
3297 | return -1; | |
3298 | ||
3299 | return 0; | |
3300 | } | |
3301 | ||
3302 | /* | |
3303 | * Install or replace NHLFE, using info from zapi nexthop | |
3304 | */ | |
f2e7f4eb MS |
3305 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3306 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3307 | { |
cd4bb96f MS |
3308 | zebra_nhlfe_t *nhlfe; |
3309 | ||
cd4bb96f MS |
3310 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
3311 | znh->type, &znh->gate, znh->ifindex); | |
3312 | if (nhlfe == NULL) | |
3313 | return -1; | |
3314 | ||
3315 | /* Update backup info if present */ | |
3316 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
3317 | nhlfe->nexthop->backup_idx = znh->backup_idx; | |
3318 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3319 | } | |
3320 | ||
3321 | /* Queue LSP for processing. */ | |
3322 | if (lsp_processq_add(lsp)) | |
3323 | return -1; | |
3324 | ||
3325 | return 0; | |
3326 | } | |
3327 | ||
3328 | /* | |
3329 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3330 | */ | |
f2e7f4eb MS |
3331 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3332 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3333 | { |
cd4bb96f MS |
3334 | zebra_nhlfe_t *nhlfe; |
3335 | ||
f2e7f4eb MS |
3336 | nhlfe = lsp_add_backup_nhlfe(lsp, type, znh->label_num, |
3337 | znh->labels, znh->type, &znh->gate, | |
3338 | znh->ifindex); | |
cd4bb96f MS |
3339 | if (nhlfe == NULL) { |
3340 | if (IS_ZEBRA_DEBUG_MPLS) | |
3341 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3342 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3343 | return -1; |
3344 | } | |
3345 | ||
3346 | /* Queue LSP for processing. */ | |
d62a17ae | 3347 | if (lsp_processq_add(lsp)) |
3348 | return -1; | |
3349 | ||
3350 | return 0; | |
ce549947 RW |
3351 | } |
3352 | ||
3353 | /* | |
3354 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3355 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3356 | */ | |
d62a17ae | 3357 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3358 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
e4a1ec74 | 3359 | const union g_addr *gate, ifindex_t ifindex) |
d62a17ae | 3360 | { |
3361 | struct hash *lsp_table; | |
3362 | zebra_ile_t tmp_ile; | |
3363 | zebra_lsp_t *lsp; | |
3364 | zebra_nhlfe_t *nhlfe; | |
3365 | char buf[BUFSIZ]; | |
3366 | ||
3367 | /* Lookup table. */ | |
3368 | lsp_table = zvrf->lsp_table; | |
3369 | if (!lsp_table) | |
3370 | return -1; | |
3371 | ||
3372 | /* If entry is not present, exit. */ | |
3373 | tmp_ile.in_label = in_label; | |
3374 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3375 | if (!lsp) | |
3376 | return 0; | |
ee70f629 | 3377 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex); |
d62a17ae | 3378 | if (!nhlfe) |
3379 | return 0; | |
3380 | ||
3381 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3382 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
3383 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
3384 | in_label, type, buf, nhlfe->flags); | |
3385 | } | |
3386 | ||
3387 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
3388 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
3389 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3390 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3391 | if (lsp_processq_add(lsp)) | |
3392 | return -1; | |
3393 | } else { | |
3394 | nhlfe_del(nhlfe); | |
3395 | ||
3396 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3397 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3398 | |
d62a17ae | 3399 | } |
3400 | return 0; | |
ce549947 RW |
3401 | } |
3402 | ||
f2e7f4eb MS |
3403 | /* |
3404 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3405 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3406 | */ | |
3407 | static int lsp_backup_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3408 | mpls_label_t in_label, | |
3409 | enum nexthop_types_t gtype, | |
3410 | const union g_addr *gate, ifindex_t ifindex) | |
3411 | { | |
3412 | struct hash *lsp_table; | |
3413 | zebra_ile_t tmp_ile; | |
3414 | zebra_lsp_t *lsp; | |
3415 | zebra_nhlfe_t *nhlfe; | |
3416 | char buf[BUFSIZ]; | |
3417 | ||
3418 | /* Lookup table. */ | |
3419 | lsp_table = zvrf->lsp_table; | |
3420 | if (!lsp_table) | |
3421 | return -1; | |
3422 | ||
3423 | /* If entry is not present, exit. */ | |
3424 | tmp_ile.in_label = in_label; | |
3425 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3426 | if (!lsp) | |
3427 | return 0; | |
3428 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, gate, ifindex); | |
3429 | if (!nhlfe) | |
3430 | return 0; | |
3431 | ||
3432 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3433 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
3434 | zlog_debug("Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
3435 | in_label, type, buf, nhlfe->flags); | |
3436 | } | |
3437 | ||
3438 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
3439 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
3440 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3441 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3442 | if (lsp_processq_add(lsp)) | |
3443 | return -1; | |
3444 | } else { | |
3445 | nhlfe_del(nhlfe); | |
3446 | ||
3447 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
3448 | lsp_check_free(lsp_table, &lsp); | |
3449 | } | |
3450 | return 0; | |
3451 | } | |
3452 | ||
ea6b290b RW |
3453 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3454 | mpls_label_t in_label) | |
3455 | { | |
3456 | struct hash *lsp_table; | |
3457 | zebra_ile_t tmp_ile; | |
3458 | zebra_lsp_t *lsp; | |
3459 | ||
3460 | /* Lookup table. */ | |
3461 | lsp_table = zvrf->lsp_table; | |
3462 | if (!lsp_table) | |
3463 | return -1; | |
3464 | ||
3465 | /* If entry is not present, exit. */ | |
3466 | tmp_ile.in_label = in_label; | |
3467 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3468 | if (!lsp) | |
3469 | return 0; | |
3470 | ||
3471 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3472 | } | |
3473 | ||
ce549947 | 3474 | /* |
651105b5 | 3475 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3476 | * If no other NHLFEs exist, the entry would be deleted. |
3477 | */ | |
651105b5 | 3478 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3479 | { |
651105b5 | 3480 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 3481 | zebra_lsp_t *lsp; |
3482 | struct hash *lsp_table; | |
ce549947 | 3483 | |
e3b78da8 | 3484 | lsp = (zebra_lsp_t *)bucket->data; |
ee70f629 | 3485 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3486 | return; |
ce549947 | 3487 | |
651105b5 | 3488 | lsp_table = args->lsp_table; |
d62a17ae | 3489 | if (!lsp_table) |
3490 | return; | |
ce549947 | 3491 | |
651105b5 | 3492 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3493 | } |
3494 | ||
3495 | /* | |
651105b5 RW |
3496 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3497 | * LSP type. | |
ce549947 | 3498 | */ |
651105b5 RW |
3499 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3500 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3501 | { |
3502 | struct route_table *table; | |
3503 | struct route_node *rn; | |
3504 | struct route_entry *re; | |
3505 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3506 | struct nexthop_group *nhg; |
3507 | bool update; | |
d62a17ae | 3508 | |
3509 | /* Process routes of interested address-families. */ | |
3510 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3511 | if (!table) | |
3512 | return; | |
3513 | ||
3514 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3515 | update = false; |
3516 | ||
a2addae8 | 3517 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3518 | struct nhg_hash_entry *new_nhe; |
da137142 | 3519 | |
f2e7f4eb | 3520 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3521 | |
f2e7f4eb MS |
3522 | nhg = &new_nhe->nhg; |
3523 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3524 | nexthop = nexthop->next) { |
651105b5 | 3525 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3526 | continue; |
3527 | ||
d62a17ae | 3528 | nexthop_del_labels(nexthop); |
3529 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3530 | SET_FLAG(re->status, | |
332ad713 | 3531 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3532 | update = true; |
3533 | } | |
3534 | ||
3535 | /* Check for backup info and update that also */ | |
3536 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3537 | if (nhg != NULL) { | |
3538 | for (nexthop = nhg->nexthop; nexthop; | |
3539 | nexthop = nexthop->next) { | |
3540 | if (nexthop->nh_label_type != lsp_type) | |
3541 | continue; | |
3542 | ||
3543 | nexthop_del_labels(nexthop); | |
3544 | SET_FLAG(re->status, | |
3545 | ROUTE_ENTRY_CHANGED); | |
3546 | SET_FLAG(re->status, | |
3547 | ROUTE_ENTRY_LABELS_CHANGED); | |
3548 | update = true; | |
3549 | } | |
d62a17ae | 3550 | } |
da137142 | 3551 | |
19474c9c | 3552 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3553 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3554 | |
f2e7f4eb | 3555 | zebra_nhg_free(new_nhe); |
407c87a6 | 3556 | } |
d62a17ae | 3557 | |
3558 | if (update) | |
3559 | rib_queue_add(rn); | |
3560 | } | |
ce549947 RW |
3561 | } |
3562 | ||
1c1cf002 | 3563 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3564 | /* |
3565 | * Check that the label values used in LSP creation are consistent. The | |
3566 | * main criteria is that if there is ECMP, the label operation must still | |
3567 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3568 | * to current HW restrictions. | |
3569 | */ | |
d62a17ae | 3570 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3571 | mpls_label_t in_label, | |
3572 | mpls_label_t out_label, | |
3573 | enum nexthop_types_t gtype, | |
3574 | union g_addr *gate, ifindex_t ifindex) | |
3575 | { | |
3576 | struct hash *slsp_table; | |
3577 | zebra_ile_t tmp_ile; | |
3578 | zebra_slsp_t *slsp; | |
3579 | zebra_snhlfe_t *snhlfe; | |
3580 | ||
3581 | /* Lookup table. */ | |
3582 | slsp_table = zvrf->slsp_table; | |
3583 | if (!slsp_table) | |
3584 | return 0; | |
3585 | ||
3586 | /* If entry is not present, exit. */ | |
3587 | tmp_ile.in_label = in_label; | |
3588 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3589 | if (!slsp) | |
3590 | return 1; | |
3591 | ||
3592 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3593 | if (snhlfe) { | |
3594 | if (snhlfe->out_label == out_label) | |
3595 | return 1; | |
3596 | ||
3597 | /* If not only NHLFE, cannot allow label change. */ | |
ee70f629 MS |
3598 | if (snhlfe != snhlfe_list_first(&slsp->snhlfe_list) || |
3599 | snhlfe_list_next(&slsp->snhlfe_list, snhlfe) != NULL) | |
d62a17ae | 3600 | return 0; |
3601 | } else { | |
3602 | /* If other NHLFEs exist, label operation must match. */ | |
ee70f629 MS |
3603 | snhlfe = snhlfe_list_first(&slsp->snhlfe_list); |
3604 | if (snhlfe != NULL) { | |
d62a17ae | 3605 | int cur_op, new_op; |
3606 | ||
ee70f629 MS |
3607 | cur_op = (snhlfe->out_label == |
3608 | MPLS_LABEL_IMPLICIT_NULL); | |
70e98a7f | 3609 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3610 | if (cur_op != new_op) |
3611 | return 0; | |
3612 | } | |
3613 | } | |
3614 | ||
3615 | /* Label values are good. */ | |
3616 | return 1; | |
7758e3f3 | 3617 | } |
1c1cf002 | 3618 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3619 | |
3620 | /* | |
3621 | * Add static LSP entry. This may be the first entry for this incoming label | |
3622 | * or an additional nexthop; an existing entry may also have outgoing label | |
3623 | * changed. | |
3624 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3625 | * NHLFEs). | |
3626 | */ | |
d62a17ae | 3627 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3628 | mpls_label_t out_label, | |
3629 | enum nexthop_types_t gtype, union g_addr *gate, | |
3630 | ifindex_t ifindex) | |
3631 | { | |
3632 | struct hash *slsp_table; | |
3633 | zebra_ile_t tmp_ile; | |
3634 | zebra_slsp_t *slsp; | |
3635 | zebra_snhlfe_t *snhlfe; | |
3636 | char buf[BUFSIZ]; | |
3637 | ||
3638 | /* Lookup table. */ | |
3639 | slsp_table = zvrf->slsp_table; | |
3640 | if (!slsp_table) | |
3641 | return -1; | |
3642 | ||
e4a1ec74 | 3643 | /* Find or create LSP. */ |
d62a17ae | 3644 | tmp_ile.in_label = in_label; |
3645 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
3646 | if (!slsp) | |
3647 | return -1; | |
e4a1ec74 | 3648 | |
d62a17ae | 3649 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); |
3650 | if (snhlfe) { | |
3651 | if (snhlfe->out_label == out_label) | |
3652 | /* No change */ | |
3653 | return 0; | |
3654 | ||
3655 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3656 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3657 | zlog_debug( | |
3658 | "Upd static LSP in-label %u nexthop %s " | |
3659 | "out-label %u (old %u)", | |
3660 | in_label, buf, out_label, snhlfe->out_label); | |
3661 | } | |
3662 | snhlfe->out_label = out_label; | |
3663 | } else { | |
3664 | /* Add static LSP entry to this nexthop */ | |
3665 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
3666 | if (!snhlfe) | |
3667 | return -1; | |
3668 | ||
3669 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3670 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3671 | zlog_debug( | |
3672 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3673 | in_label, buf, out_label); | |
3674 | } | |
3675 | } | |
3676 | ||
3677 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3678 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3679 | gtype, gate, ifindex)) | |
d62a17ae | 3680 | return -1; |
3681 | ||
3682 | return 0; | |
7758e3f3 | 3683 | } |
3684 | ||
3685 | /* | |
3686 | * Delete static LSP entry. This may be the delete of one particular | |
3687 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3688 | * all NHLFEs). | |
3689 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3690 | * LSP configuration. | |
3691 | */ | |
d62a17ae | 3692 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3693 | enum nexthop_types_t gtype, union g_addr *gate, | |
3694 | ifindex_t ifindex) | |
3695 | { | |
3696 | struct hash *slsp_table; | |
3697 | zebra_ile_t tmp_ile; | |
3698 | zebra_slsp_t *slsp; | |
3699 | zebra_snhlfe_t *snhlfe; | |
3700 | ||
3701 | /* Lookup table. */ | |
3702 | slsp_table = zvrf->slsp_table; | |
3703 | if (!slsp_table) | |
3704 | return -1; | |
3705 | ||
3706 | /* If entry is not present, exit. */ | |
3707 | tmp_ile.in_label = in_label; | |
3708 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3709 | if (!slsp) | |
3710 | return 0; | |
3711 | ||
3712 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3713 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3714 | if (IS_ZEBRA_DEBUG_MPLS) | |
3715 | zlog_debug("Del static LSP in-label %u", in_label); | |
3716 | ||
3717 | /* Uninstall entire LSP from the main table. */ | |
3718 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3719 | ||
3720 | /* Delete all static NHLFEs */ | |
3721 | snhlfe_del_all(slsp); | |
3722 | } else { | |
3723 | /* Find specific NHLFE, exit if not found. */ | |
3724 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3725 | if (!snhlfe) | |
3726 | return 0; | |
3727 | ||
3728 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3729 | char buf[BUFSIZ]; | |
3730 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3731 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
3732 | in_label, buf); | |
3733 | } | |
3734 | ||
3735 | /* Uninstall LSP from the main table. */ | |
3736 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
3737 | gate, ifindex); | |
3738 | ||
3739 | /* Delete static LSP NHLFE */ | |
3740 | snhlfe_del(snhlfe); | |
3741 | } | |
3742 | ||
3743 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
3744 | * above. */ | |
ee70f629 | 3745 | if (snhlfe_list_first(&slsp->snhlfe_list) == NULL) { |
d62a17ae | 3746 | slsp = hash_release(slsp_table, &tmp_ile); |
0a22ddfb | 3747 | XFREE(MTYPE_SLSP, slsp); |
d62a17ae | 3748 | } |
3749 | ||
3750 | return 0; | |
7758e3f3 | 3751 | } |
3752 | ||
40c7bdb0 | 3753 | /* |
3754 | * Schedule all MPLS label forwarding entries for processing. | |
3755 | * Called upon changes that may affect one or more of them such as | |
3756 | * interface or nexthop state changes. | |
3757 | */ | |
d62a17ae | 3758 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3759 | { |
d62a17ae | 3760 | if (!zvrf) |
3761 | return; | |
3762 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3763 | } |
3764 | ||
3ab18ff2 | 3765 | /* |
3766 | * Display MPLS label forwarding table for a specific LSP | |
3767 | * (VTY command handler). | |
3768 | */ | |
d62a17ae | 3769 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3770 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3771 | { |
d62a17ae | 3772 | struct hash *lsp_table; |
3773 | zebra_lsp_t *lsp; | |
3774 | zebra_ile_t tmp_ile; | |
3775 | json_object *json = NULL; | |
3ab18ff2 | 3776 | |
d62a17ae | 3777 | /* Lookup table. */ |
3778 | lsp_table = zvrf->lsp_table; | |
3779 | if (!lsp_table) | |
3780 | return; | |
3ab18ff2 | 3781 | |
d62a17ae | 3782 | /* If entry is not present, exit. */ |
3783 | tmp_ile.in_label = label; | |
3784 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3785 | if (!lsp) | |
3786 | return; | |
3ab18ff2 | 3787 | |
d62a17ae | 3788 | if (use_json) { |
3789 | json = lsp_json(lsp); | |
9d303b37 DL |
3790 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3791 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3792 | json_object_free(json); |
3793 | } else | |
a29c2887 | 3794 | lsp_print(vty, lsp); |
3ab18ff2 | 3795 | } |
3796 | ||
3797 | /* | |
3798 | * Display MPLS label forwarding table (VTY command handler). | |
3799 | */ | |
d62a17ae | 3800 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3801 | bool use_json) |
d62a17ae | 3802 | { |
3803 | char buf[BUFSIZ]; | |
3804 | json_object *json = NULL; | |
3805 | zebra_lsp_t *lsp = NULL; | |
3806 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3807 | struct listnode *node = NULL; |
3808 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3809 | ||
3810 | if (use_json) { | |
3811 | json = json_object_new_object(); | |
3812 | ||
3813 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3814 | json_object_object_add( | |
3815 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
3816 | lsp_json(lsp)); | |
3817 | ||
9d303b37 DL |
3818 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3819 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3820 | json_object_free(json); |
3821 | } else { | |
a971aeb6 RW |
3822 | struct ttable *tt; |
3823 | ||
3824 | /* Prepare table. */ | |
3825 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3826 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3827 | tt->style.cell.rpad = 2; | |
3828 | tt->style.corner = '+'; | |
3829 | ttable_restyle(tt); | |
3830 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3831 | |
3832 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3833 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3834 | struct nexthop *nexthop; |
3835 | const char *out_label_str; | |
3836 | char nh_buf[NEXTHOP_STRLEN]; | |
3837 | ||
d62a17ae | 3838 | nexthop = nhlfe->nexthop; |
3839 | ||
3840 | switch (nexthop->type) { | |
996c9314 | 3841 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3842 | struct zebra_ns *zns; |
b9abd9ad DS |
3843 | struct interface *ifp; |
3844 | ||
86f07f44 PG |
3845 | zns = zebra_ns_lookup(NS_DEFAULT); |
3846 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3847 | zns, nexthop->ifindex); |
3848 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3849 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3850 | break; |
3851 | } | |
d62a17ae | 3852 | case NEXTHOP_TYPE_IPV4: |
3853 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3854 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3855 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3856 | break; |
3857 | case NEXTHOP_TYPE_IPV6: | |
3858 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3859 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3860 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3861 | break; |
3862 | default: | |
3863 | break; | |
3864 | } | |
3865 | ||
b9abd9ad | 3866 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3867 | out_label_str = mpls_label2str( |
3868 | nexthop->nh_label->num_labels, | |
3869 | &nexthop->nh_label->label[0], | |
3870 | buf, BUFSIZ, 1); | |
b9abd9ad | 3871 | else |
a971aeb6 RW |
3872 | out_label_str = "-"; |
3873 | ||
3874 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3875 | lsp->ile.in_label, | |
3876 | nhlfe_type2str(nhlfe->type), | |
3877 | nh_buf, out_label_str); | |
d62a17ae | 3878 | } |
3879 | } | |
3880 | ||
a971aeb6 RW |
3881 | /* Dump the generated table. */ |
3882 | if (tt->nrows > 1) { | |
3883 | char *table = ttable_dump(tt, "\n"); | |
3884 | vty_out(vty, "%s\n", table); | |
3885 | XFREE(MTYPE_TMP, table); | |
3886 | } | |
3887 | ttable_del(tt); | |
d62a17ae | 3888 | } |
3889 | ||
6a154c88 | 3890 | list_delete(&lsp_list); |
3ab18ff2 | 3891 | } |
3892 | ||
7758e3f3 | 3893 | /* |
3894 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3895 | */ | |
d62a17ae | 3896 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3897 | { | |
3898 | zebra_slsp_t *slsp; | |
3899 | zebra_snhlfe_t *snhlfe; | |
3900 | struct listnode *node; | |
3901 | struct list *slsp_list = | |
3902 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
3903 | ||
3904 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
ee70f629 | 3905 | frr_each(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
0af35d90 | 3906 | char buf[BUFSIZ]; |
d62a17ae | 3907 | char lstr[30]; |
3908 | ||
0af35d90 | 3909 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 3910 | switch (snhlfe->out_label) { |
70e98a7f DS |
3911 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3912 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3913 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3914 | break; | |
70e98a7f | 3915 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3916 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3917 | break; | |
3918 | default: | |
772270f3 QY |
3919 | snprintf(lstr, sizeof(lstr), "%u", |
3920 | snhlfe->out_label); | |
d62a17ae | 3921 | break; |
3922 | } | |
3923 | ||
3924 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
3925 | buf, lstr); | |
3926 | } | |
3927 | } | |
b78b820d | 3928 | |
6a154c88 | 3929 | list_delete(&slsp_list); |
d62a17ae | 3930 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3931 | } |
3932 | ||
1b6d5c7e VV |
3933 | /* |
3934 | * Add/update global label block. | |
3935 | */ | |
d7c0a89a QY |
3936 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3937 | uint32_t end_label) | |
1b6d5c7e | 3938 | { |
d62a17ae | 3939 | zvrf->mpls_srgb.start_label = start_label; |
3940 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3941 | |
d62a17ae | 3942 | /* Evaluate registered FECs to see if any get a label or not. */ |
3943 | fec_evaluate(zvrf); | |
3944 | return 0; | |
1b6d5c7e VV |
3945 | } |
3946 | ||
3947 | /* | |
3948 | * Delete global label block. | |
3949 | */ | |
d62a17ae | 3950 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3951 | { |
d62a17ae | 3952 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3953 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3954 | |
d62a17ae | 3955 | /* Process registered FECs to clear their local label, if needed. */ |
3956 | fec_evaluate(zvrf); | |
3957 | return 0; | |
1b6d5c7e VV |
3958 | } |
3959 | ||
3960 | /* | |
3961 | * Display MPLS global label block configuration (VTY command handler). | |
3962 | */ | |
d62a17ae | 3963 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3964 | { |
d62a17ae | 3965 | if (zvrf->mpls_srgb.start_label == 0) |
3966 | return 0; | |
1b6d5c7e | 3967 | |
d62a17ae | 3968 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3969 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3970 | vty_out(vty, "mpls label global-block %u %u\n", | |
3971 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3972 | } | |
1b6d5c7e | 3973 | |
d62a17ae | 3974 | return 1; |
1b6d5c7e VV |
3975 | } |
3976 | ||
84915b0a | 3977 | /* |
3978 | * Called when VRF becomes inactive, cleans up information but keeps | |
3979 | * the table itself. | |
84915b0a | 3980 | */ |
3981 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3982 | { | |
c2e10644 MS |
3983 | struct zebra_vrf *def_zvrf; |
3984 | afi_t afi; | |
3985 | ||
3986 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3987 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3988 | else { | |
3989 | /* | |
3990 | * For other vrfs, we try to remove associated LSPs; we locate | |
3991 | * the LSPs in the default vrf. | |
3992 | */ | |
3993 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3994 | ||
3995 | /* At shutdown, the default may be gone already */ | |
3996 | if (def_zvrf == NULL) | |
3997 | return; | |
3998 | ||
3999 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
4000 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
4001 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
4002 | } | |
4003 | } | |
84915b0a | 4004 | } |
4005 | ||
40c7bdb0 | 4006 | /* |
4007 | * Called upon process exiting, need to delete LSP forwarding | |
4008 | * entries from the kernel. | |
4009 | * NOTE: Currently supported only for default VRF. | |
4010 | */ | |
d62a17ae | 4011 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 4012 | { |
d62a17ae | 4013 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
4014 | hash_clean(zvrf->lsp_table, NULL); | |
4015 | hash_free(zvrf->lsp_table); | |
4016 | hash_clean(zvrf->slsp_table, NULL); | |
4017 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
4018 | route_table_finish(zvrf->fec_table[AFI_IP]); |
4019 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 4020 | } |
4021 | ||
7758e3f3 | 4022 | /* |
4023 | * Allocate MPLS tables for this VRF and do other initialization. | |
4024 | * NOTE: Currently supported only for default VRF. | |
4025 | */ | |
d62a17ae | 4026 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 4027 | { |
d62a17ae | 4028 | if (!zvrf) |
4029 | return; | |
996c9314 LB |
4030 | zvrf->slsp_table = |
4031 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
4032 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 4033 | zvrf->fec_table[AFI_IP] = route_table_init(); |
4034 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
4035 | zvrf->mpls_flags = 0; | |
4036 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
4037 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 4038 | } |
4039 | ||
4040 | /* | |
4041 | * Global MPLS initialization. | |
4042 | */ | |
d62a17ae | 4043 | void zebra_mpls_init(void) |
7758e3f3 | 4044 | { |
d62a17ae | 4045 | mpls_enabled = 0; |
33c32282 | 4046 | |
d62a17ae | 4047 | if (mpls_kernel_init() < 0) { |
e914ccbe | 4048 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 4049 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 4050 | return; |
4051 | } | |
fe6c7157 | 4052 | |
2561d12e | 4053 | if (!mpls_processq_init()) |
d62a17ae | 4054 | mpls_enabled = 1; |
453844ab | 4055 | |
21ccc0cf | 4056 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 4057 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 4058 | } |