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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 | ||
3e0a9b40 | 1261 | assert(lsp); |
d62a17ae | 1262 | |
1263 | nhlfe = XCALLOC(MTYPE_NHLFE, sizeof(zebra_nhlfe_t)); | |
d62a17ae | 1264 | |
1265 | nhlfe->lsp = lsp; | |
1266 | nhlfe->type = lsp_type; | |
1267 | nhlfe->distance = lsp_distance(lsp_type); | |
1268 | ||
1269 | nexthop = nexthop_new(); | |
cd4bb96f | 1270 | |
5065db0a | 1271 | nexthop_add_labels(nexthop, lsp_type, num_labels, labels); |
d62a17ae | 1272 | |
4a7371e9 | 1273 | nexthop->vrf_id = VRF_DEFAULT; |
d62a17ae | 1274 | nexthop->type = gtype; |
1275 | switch (nexthop->type) { | |
1276 | case NEXTHOP_TYPE_IPV4: | |
1277 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1278 | nexthop->gate.ipv4 = gate->ipv4; | |
1279 | if (ifindex) | |
1280 | nexthop->ifindex = ifindex; | |
1281 | break; | |
1282 | case NEXTHOP_TYPE_IPV6: | |
1283 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1284 | nexthop->gate.ipv6 = gate->ipv6; | |
1285 | if (ifindex) | |
1286 | nexthop->ifindex = ifindex; | |
1287 | break; | |
b9abd9ad DS |
1288 | case NEXTHOP_TYPE_IFINDEX: |
1289 | nexthop->ifindex = ifindex; | |
1290 | break; | |
d62a17ae | 1291 | default: |
1292 | nexthop_free(nexthop); | |
1293 | XFREE(MTYPE_NHLFE, nhlfe); | |
1294 | return NULL; | |
d62a17ae | 1295 | } |
d62a17ae | 1296 | nhlfe->nexthop = nexthop; |
ee70f629 MS |
1297 | |
1298 | return nhlfe; | |
1299 | } | |
1300 | ||
1301 | /* | |
1302 | * Add NHLFE. Base entry must have been created and duplicate | |
1303 | * check done. | |
1304 | */ | |
1305 | static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type, | |
1306 | enum nexthop_types_t gtype, | |
1307 | const union g_addr *gate, ifindex_t ifindex, | |
cd4bb96f MS |
1308 | uint8_t num_labels, const mpls_label_t *labels) |
1309 | { | |
1310 | zebra_nhlfe_t *nhlfe; | |
1311 | ||
1312 | if (!lsp) | |
1313 | return NULL; | |
1314 | ||
1315 | /* Allocate new object */ | |
1316 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, | |
1317 | labels); | |
1318 | ||
1319 | /* Enqueue to LSP, at head of list. */ | |
3e0a9b40 | 1320 | nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe); |
cd4bb96f MS |
1321 | |
1322 | return nhlfe; | |
1323 | } | |
1324 | ||
1325 | /* | |
1326 | * Add backup NHLFE. Base entry must have been created and duplicate | |
1327 | * check done. | |
1328 | */ | |
1329 | static zebra_nhlfe_t *nhlfe_backup_add(zebra_lsp_t *lsp, | |
1330 | enum lsp_types_t lsp_type, | |
1331 | enum nexthop_types_t gtype, | |
1332 | const union g_addr *gate, | |
1333 | ifindex_t ifindex, uint8_t num_labels, | |
1334 | const mpls_label_t *labels) | |
ee70f629 MS |
1335 | { |
1336 | zebra_nhlfe_t *nhlfe; | |
1337 | ||
1338 | if (!lsp) | |
1339 | return NULL; | |
1340 | ||
1341 | /* Allocate new object */ | |
cd4bb96f MS |
1342 | nhlfe = nhlfe_alloc(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
1343 | labels); | |
1344 | ||
1345 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP); | |
ee70f629 | 1346 | |
cd4bb96f | 1347 | /* Enqueue to LSP, at tail of list. */ |
3e0a9b40 | 1348 | nhlfe_list_add_tail(&lsp->backup_nhlfe_list, nhlfe); |
d62a17ae | 1349 | |
1350 | return nhlfe; | |
40c7bdb0 | 1351 | } |
1352 | ||
1353 | /* | |
cd4bb96f MS |
1354 | * Common delete for NHLFEs. |
1355 | */ | |
1356 | static void nhlfe_free(zebra_nhlfe_t *nhlfe) | |
1357 | { | |
1358 | if (!nhlfe) | |
1359 | return; | |
1360 | ||
1361 | /* Free nexthop. */ | |
1362 | if (nhlfe->nexthop) | |
1363 | nexthop_free(nhlfe->nexthop); | |
1364 | ||
1365 | nhlfe->nexthop = NULL; | |
1366 | ||
1367 | XFREE(MTYPE_NHLFE, nhlfe); | |
1368 | } | |
1369 | ||
1370 | ||
1371 | /* | |
1372 | * Disconnect NHLFE from LSP, and free. Entry must be present on LSP's list. | |
40c7bdb0 | 1373 | */ |
d62a17ae | 1374 | static int nhlfe_del(zebra_nhlfe_t *nhlfe) |
40c7bdb0 | 1375 | { |
d62a17ae | 1376 | zebra_lsp_t *lsp; |
40c7bdb0 | 1377 | |
d62a17ae | 1378 | if (!nhlfe) |
1379 | return -1; | |
40c7bdb0 | 1380 | |
d62a17ae | 1381 | lsp = nhlfe->lsp; |
1382 | if (!lsp) | |
1383 | return -1; | |
40c7bdb0 | 1384 | |
d62a17ae | 1385 | if (nhlfe == lsp->best_nhlfe) |
1386 | lsp->best_nhlfe = NULL; | |
bb49a121 | 1387 | |
ee70f629 | 1388 | /* Unlink from LSP */ |
cd4bb96f MS |
1389 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_IS_BACKUP)) |
1390 | nhlfe_list_del(&lsp->backup_nhlfe_list, nhlfe); | |
1391 | else | |
1392 | nhlfe_list_del(&lsp->nhlfe_list, nhlfe); | |
ee70f629 | 1393 | |
cd4bb96f MS |
1394 | nhlfe->lsp = NULL; |
1395 | ||
1396 | nhlfe_free(nhlfe); | |
40c7bdb0 | 1397 | |
d62a17ae | 1398 | return 0; |
40c7bdb0 | 1399 | } |
1400 | ||
a64448ba DS |
1401 | /* |
1402 | * Update label for NHLFE entry. | |
1403 | */ | |
d62a17ae | 1404 | static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe, |
8ecdb26e | 1405 | struct mpls_label_stack *nh_label) |
d62a17ae | 1406 | { |
1407 | nhlfe->nexthop->nh_label->label[0] = nh_label->label[0]; | |
1408 | } | |
1409 | ||
1410 | static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp, | |
1411 | enum lsp_types_t type) | |
1412 | { | |
ee70f629 | 1413 | zebra_nhlfe_t *nhlfe; |
d62a17ae | 1414 | int schedule_lsp = 0; |
1415 | char buf[BUFSIZ]; | |
1416 | ||
1417 | /* Mark NHLFEs for delete or directly delete, as appropriate. */ | |
ee70f629 | 1418 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1419 | /* Skip non-static NHLFEs */ |
1420 | if (nhlfe->type != type) | |
1421 | continue; | |
1422 | ||
1423 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1424 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1425 | zlog_debug( | |
1426 | "Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
1427 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1428 | } | |
1429 | ||
1430 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1431 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1432 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1433 | schedule_lsp = 1; | |
1434 | } else { | |
1435 | nhlfe_del(nhlfe); | |
1436 | } | |
1437 | } | |
1438 | ||
f2e7f4eb MS |
1439 | frr_each_safe(nhlfe_list, &lsp->backup_nhlfe_list, nhlfe) { |
1440 | /* Skip non-static NHLFEs */ | |
1441 | if (nhlfe->type != type) | |
1442 | continue; | |
1443 | ||
1444 | if (IS_ZEBRA_DEBUG_MPLS) { | |
1445 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
1446 | zlog_debug( | |
1447 | "Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
1448 | lsp->ile.in_label, type, buf, nhlfe->flags); | |
1449 | } | |
1450 | ||
1451 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
1452 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
1453 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
1454 | schedule_lsp = 1; | |
1455 | } else { | |
1456 | nhlfe_del(nhlfe); | |
1457 | } | |
1458 | } | |
1459 | ||
d62a17ae | 1460 | /* Queue LSP for processing, if needed, else delete. */ |
1461 | if (schedule_lsp) { | |
1462 | if (lsp_processq_add(lsp)) | |
1463 | return -1; | |
1323491d MS |
1464 | } else { |
1465 | lsp_check_free(lsp_table, &lsp); | |
1466 | } | |
d62a17ae | 1467 | |
1468 | return 0; | |
40c7bdb0 | 1469 | } |
1470 | ||
ce549947 RW |
1471 | /* |
1472 | * Uninstall all static NHLFEs for a particular LSP forwarding entry. | |
1473 | * If no other NHLFEs exist, the entry would be deleted. | |
1474 | */ | |
d62a17ae | 1475 | static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf, |
1476 | mpls_label_t in_label) | |
ce549947 | 1477 | { |
d62a17ae | 1478 | struct hash *lsp_table; |
1479 | zebra_ile_t tmp_ile; | |
1480 | zebra_lsp_t *lsp; | |
ce549947 | 1481 | |
d62a17ae | 1482 | /* Lookup table. */ |
1483 | lsp_table = zvrf->lsp_table; | |
1484 | if (!lsp_table) | |
1485 | return -1; | |
ce549947 | 1486 | |
d62a17ae | 1487 | /* If entry is not present, exit. */ |
1488 | tmp_ile.in_label = in_label; | |
1489 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
ee70f629 | 1490 | if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL)) |
d62a17ae | 1491 | return 0; |
ce549947 | 1492 | |
d62a17ae | 1493 | return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC); |
ce549947 RW |
1494 | } |
1495 | ||
d62a17ae | 1496 | static json_object *nhlfe_json(zebra_nhlfe_t *nhlfe) |
b78b820d | 1497 | { |
d62a17ae | 1498 | char buf[BUFSIZ]; |
1499 | json_object *json_nhlfe = NULL; | |
1500 | struct nexthop *nexthop = nhlfe->nexthop; | |
b78b820d | 1501 | |
d62a17ae | 1502 | json_nhlfe = json_object_new_object(); |
1503 | json_object_string_add(json_nhlfe, "type", nhlfe_type2str(nhlfe->type)); | |
1504 | json_object_int_add(json_nhlfe, "outLabel", | |
1505 | nexthop->nh_label->label[0]); | |
1506 | json_object_int_add(json_nhlfe, "distance", nhlfe->distance); | |
b78b820d | 1507 | |
d62a17ae | 1508 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) |
1509 | json_object_boolean_true_add(json_nhlfe, "installed"); | |
b78b820d | 1510 | |
d62a17ae | 1511 | switch (nexthop->type) { |
1512 | case NEXTHOP_TYPE_IPV4: | |
1513 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1514 | json_object_string_add(json_nhlfe, "nexthop", | |
1515 | inet_ntoa(nexthop->gate.ipv4)); | |
1516 | break; | |
1517 | case NEXTHOP_TYPE_IPV6: | |
1518 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1519 | json_object_string_add( | |
1520 | json_nhlfe, "nexthop", | |
1521 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1522 | ||
1523 | if (nexthop->ifindex) | |
4a7371e9 DS |
1524 | json_object_string_add(json_nhlfe, "interface", |
1525 | ifindex2ifname(nexthop->ifindex, | |
1526 | nexthop->vrf_id)); | |
d62a17ae | 1527 | break; |
1528 | default: | |
1529 | break; | |
1530 | } | |
1531 | return json_nhlfe; | |
b78b820d | 1532 | } |
1533 | ||
3ab18ff2 | 1534 | /* |
1535 | * Print the NHLFE for a LSP forwarding entry. | |
1536 | */ | |
d62a17ae | 1537 | static void nhlfe_print(zebra_nhlfe_t *nhlfe, struct vty *vty) |
1538 | { | |
1539 | struct nexthop *nexthop; | |
a29c2887 | 1540 | char buf[MPLS_LABEL_STRLEN]; |
d62a17ae | 1541 | |
1542 | nexthop = nhlfe->nexthop; | |
1543 | if (!nexthop || !nexthop->nh_label) // unexpected | |
1544 | return; | |
1545 | ||
1546 | vty_out(vty, " type: %s remote label: %s distance: %d\n", | |
1547 | nhlfe_type2str(nhlfe->type), | |
a29c2887 MS |
1548 | mpls_label2str(nexthop->nh_label->num_labels, |
1549 | nexthop->nh_label->label, | |
1550 | buf, sizeof(buf), 0), | |
d62a17ae | 1551 | nhlfe->distance); |
1552 | switch (nexthop->type) { | |
1553 | case NEXTHOP_TYPE_IPV4: | |
1554 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1555 | vty_out(vty, " via %s", inet_ntoa(nexthop->gate.ipv4)); | |
1556 | if (nexthop->ifindex) | |
1557 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1558 | ifindex2ifname(nexthop->ifindex, |
1559 | nexthop->vrf_id)); | |
d62a17ae | 1560 | break; |
1561 | case NEXTHOP_TYPE_IPV6: | |
1562 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1563 | vty_out(vty, " via %s", | |
1564 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ)); | |
1565 | if (nexthop->ifindex) | |
1566 | vty_out(vty, " dev %s", | |
4a7371e9 DS |
1567 | ifindex2ifname(nexthop->ifindex, |
1568 | nexthop->vrf_id)); | |
d62a17ae | 1569 | break; |
1570 | default: | |
1571 | break; | |
1572 | } | |
996c9314 LB |
1573 | vty_out(vty, "%s", |
1574 | CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) ? " (installed)" | |
1575 | : ""); | |
d62a17ae | 1576 | vty_out(vty, "\n"); |
3ab18ff2 | 1577 | } |
1578 | ||
1579 | /* | |
1580 | * Print an LSP forwarding entry. | |
1581 | */ | |
a29c2887 | 1582 | static void lsp_print(struct vty *vty, zebra_lsp_t *lsp) |
3ab18ff2 | 1583 | { |
a29c2887 MS |
1584 | zebra_nhlfe_t *nhlfe, *backup; |
1585 | int i; | |
3ab18ff2 | 1586 | |
d62a17ae | 1587 | vty_out(vty, "Local label: %u%s\n", lsp->ile.in_label, |
1588 | CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)" | |
1589 | : ""); | |
3ab18ff2 | 1590 | |
a29c2887 | 1591 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d62a17ae | 1592 | nhlfe_print(nhlfe, vty); |
a29c2887 MS |
1593 | |
1594 | if (nhlfe->nexthop && | |
1595 | CHECK_FLAG(nhlfe->nexthop->flags, | |
1596 | NEXTHOP_FLAG_HAS_BACKUP)) { | |
1597 | /* Find backup in backup list */ | |
1598 | ||
1599 | i = 0; | |
1600 | frr_each(nhlfe_list, &lsp->backup_nhlfe_list, backup) { | |
1601 | if (i == nhlfe->nexthop->backup_idx) | |
1602 | break; | |
1603 | i++; | |
1604 | } | |
1605 | ||
1606 | if (backup) { | |
1607 | vty_out(vty, " [backup %d]", i); | |
1608 | nhlfe_print(backup, vty); | |
1609 | } | |
1610 | } | |
1611 | } | |
3ab18ff2 | 1612 | } |
1613 | ||
1614 | /* | |
b78b820d | 1615 | * JSON objects for an LSP forwarding entry. |
3ab18ff2 | 1616 | */ |
d62a17ae | 1617 | static json_object *lsp_json(zebra_lsp_t *lsp) |
3ab18ff2 | 1618 | { |
d62a17ae | 1619 | zebra_nhlfe_t *nhlfe = NULL; |
1620 | json_object *json = json_object_new_object(); | |
1621 | json_object *json_nhlfe_list = json_object_new_array(); | |
3ab18ff2 | 1622 | |
d62a17ae | 1623 | json_object_int_add(json, "inLabel", lsp->ile.in_label); |
b78b820d | 1624 | |
d62a17ae | 1625 | if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) |
1626 | json_object_boolean_true_add(json, "installed"); | |
3ab18ff2 | 1627 | |
ee70f629 | 1628 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) |
d62a17ae | 1629 | json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe)); |
b78b820d | 1630 | |
d62a17ae | 1631 | json_object_object_add(json, "nexthops", json_nhlfe_list); |
1632 | return json; | |
b78b820d | 1633 | } |
1634 | ||
1635 | ||
1636 | /* Return a sorted linked list of the hash contents */ | |
d62a17ae | 1637 | static struct list *hash_get_sorted_list(struct hash *hash, void *cmp) |
b78b820d | 1638 | { |
d62a17ae | 1639 | unsigned int i; |
e3b78da8 | 1640 | struct hash_bucket *hb; |
d62a17ae | 1641 | struct list *sorted_list = list_new(); |
b78b820d | 1642 | |
d62a17ae | 1643 | sorted_list->cmp = (int (*)(void *, void *))cmp; |
b78b820d | 1644 | |
d62a17ae | 1645 | for (i = 0; i < hash->size; i++) |
1646 | for (hb = hash->index[i]; hb; hb = hb->next) | |
1647 | listnode_add_sort(sorted_list, hb->data); | |
b78b820d | 1648 | |
d62a17ae | 1649 | return sorted_list; |
3ab18ff2 | 1650 | } |
1651 | ||
7758e3f3 | 1652 | /* |
b78b820d | 1653 | * Compare two LSPs based on their label values. |
7758e3f3 | 1654 | */ |
e4a1ec74 | 1655 | static int lsp_cmp(const zebra_lsp_t *lsp1, const zebra_lsp_t *lsp2) |
7758e3f3 | 1656 | { |
d62a17ae | 1657 | if (lsp1->ile.in_label < lsp2->ile.in_label) |
1658 | return -1; | |
7758e3f3 | 1659 | |
d62a17ae | 1660 | if (lsp1->ile.in_label > lsp2->ile.in_label) |
1661 | return 1; | |
7758e3f3 | 1662 | |
d62a17ae | 1663 | return 0; |
7758e3f3 | 1664 | } |
1665 | ||
1666 | /* | |
1667 | * Callback to allocate static LSP. | |
1668 | */ | |
d62a17ae | 1669 | static void *slsp_alloc(void *p) |
7758e3f3 | 1670 | { |
d62a17ae | 1671 | const zebra_ile_t *ile = p; |
1672 | zebra_slsp_t *slsp; | |
7758e3f3 | 1673 | |
d62a17ae | 1674 | slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t)); |
1675 | slsp->ile = *ile; | |
ee70f629 MS |
1676 | snhlfe_list_init(&slsp->snhlfe_list); |
1677 | ||
d62a17ae | 1678 | return ((void *)slsp); |
7758e3f3 | 1679 | } |
1680 | ||
b78b820d | 1681 | /* |
1682 | * Compare two static LSPs based on their label values. | |
1683 | */ | |
e4a1ec74 | 1684 | static int slsp_cmp(const zebra_slsp_t *slsp1, const zebra_slsp_t *slsp2) |
b78b820d | 1685 | { |
d62a17ae | 1686 | if (slsp1->ile.in_label < slsp2->ile.in_label) |
1687 | return -1; | |
b78b820d | 1688 | |
d62a17ae | 1689 | if (slsp1->ile.in_label > slsp2->ile.in_label) |
1690 | return 1; | |
b78b820d | 1691 | |
d62a17ae | 1692 | return 0; |
b78b820d | 1693 | } |
1694 | ||
7758e3f3 | 1695 | /* |
1696 | * Check if static NHLFE matches with search info passed. | |
1697 | */ | |
d62a17ae | 1698 | static int snhlfe_match(zebra_snhlfe_t *snhlfe, enum nexthop_types_t gtype, |
e4a1ec74 | 1699 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1700 | { |
d62a17ae | 1701 | int cmp = 1; |
7758e3f3 | 1702 | |
d62a17ae | 1703 | if (snhlfe->gtype != gtype) |
1704 | return 1; | |
7758e3f3 | 1705 | |
d62a17ae | 1706 | switch (snhlfe->gtype) { |
1707 | case NEXTHOP_TYPE_IPV4: | |
1708 | cmp = memcmp(&(snhlfe->gate.ipv4), &(gate->ipv4), | |
1709 | sizeof(struct in_addr)); | |
1710 | break; | |
1711 | case NEXTHOP_TYPE_IPV6: | |
1712 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1713 | cmp = memcmp(&(snhlfe->gate.ipv6), &(gate->ipv6), | |
1714 | sizeof(struct in6_addr)); | |
1715 | if (!cmp && snhlfe->gtype == NEXTHOP_TYPE_IPV6_IFINDEX) | |
1716 | cmp = !(snhlfe->ifindex == ifindex); | |
1717 | break; | |
1718 | default: | |
1719 | break; | |
1720 | } | |
7758e3f3 | 1721 | |
d62a17ae | 1722 | return cmp; |
7758e3f3 | 1723 | } |
1724 | ||
1725 | /* | |
1726 | * Locate static NHLFE that matches with passed info. | |
1727 | */ | |
d62a17ae | 1728 | static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp, |
1729 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1730 | const union g_addr *gate, ifindex_t ifindex) |
7758e3f3 | 1731 | { |
d62a17ae | 1732 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1733 | |
d62a17ae | 1734 | if (!slsp) |
1735 | return NULL; | |
7758e3f3 | 1736 | |
ee70f629 | 1737 | frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
d62a17ae | 1738 | if (!snhlfe_match(snhlfe, gtype, gate, ifindex)) |
1739 | break; | |
1740 | } | |
7758e3f3 | 1741 | |
d62a17ae | 1742 | return snhlfe; |
7758e3f3 | 1743 | } |
1744 | ||
1745 | ||
1746 | /* | |
1747 | * Add static NHLFE. Base LSP config entry must have been created | |
1748 | * and duplicate check done. | |
1749 | */ | |
d62a17ae | 1750 | static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp, |
1751 | enum nexthop_types_t gtype, | |
e4a1ec74 | 1752 | const union g_addr *gate, ifindex_t ifindex, |
d62a17ae | 1753 | mpls_label_t out_label) |
1754 | { | |
1755 | zebra_snhlfe_t *snhlfe; | |
1756 | ||
1757 | if (!slsp) | |
1758 | return NULL; | |
1759 | ||
1760 | snhlfe = XCALLOC(MTYPE_SNHLFE, sizeof(zebra_snhlfe_t)); | |
1761 | snhlfe->slsp = slsp; | |
1762 | snhlfe->out_label = out_label; | |
1763 | snhlfe->gtype = gtype; | |
1764 | switch (gtype) { | |
1765 | case NEXTHOP_TYPE_IPV4: | |
1766 | snhlfe->gate.ipv4 = gate->ipv4; | |
1767 | break; | |
1768 | case NEXTHOP_TYPE_IPV6: | |
1769 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1770 | snhlfe->gate.ipv6 = gate->ipv6; | |
1771 | if (ifindex) | |
1772 | snhlfe->ifindex = ifindex; | |
1773 | break; | |
1774 | default: | |
1775 | XFREE(MTYPE_SNHLFE, snhlfe); | |
1776 | return NULL; | |
1777 | } | |
1778 | ||
ee70f629 | 1779 | snhlfe_list_add_head(&slsp->snhlfe_list, snhlfe); |
d62a17ae | 1780 | |
1781 | return snhlfe; | |
7758e3f3 | 1782 | } |
1783 | ||
1784 | /* | |
1785 | * Delete static NHLFE. Entry must be present on list. | |
1786 | */ | |
d62a17ae | 1787 | static int snhlfe_del(zebra_snhlfe_t *snhlfe) |
7758e3f3 | 1788 | { |
d62a17ae | 1789 | zebra_slsp_t *slsp; |
7758e3f3 | 1790 | |
d62a17ae | 1791 | if (!snhlfe) |
1792 | return -1; | |
7758e3f3 | 1793 | |
d62a17ae | 1794 | slsp = snhlfe->slsp; |
1795 | if (!slsp) | |
1796 | return -1; | |
7758e3f3 | 1797 | |
ee70f629 | 1798 | snhlfe_list_del(&slsp->snhlfe_list, snhlfe); |
7758e3f3 | 1799 | |
0a22ddfb | 1800 | XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname); |
d62a17ae | 1801 | XFREE(MTYPE_SNHLFE, snhlfe); |
7758e3f3 | 1802 | |
d62a17ae | 1803 | return 0; |
7758e3f3 | 1804 | } |
1805 | ||
1806 | /* | |
1807 | * Delete all static NHLFE entries for this LSP (in label). | |
1808 | */ | |
d62a17ae | 1809 | static int snhlfe_del_all(zebra_slsp_t *slsp) |
7758e3f3 | 1810 | { |
ee70f629 | 1811 | zebra_snhlfe_t *snhlfe; |
7758e3f3 | 1812 | |
d62a17ae | 1813 | if (!slsp) |
1814 | return -1; | |
7758e3f3 | 1815 | |
ee70f629 | 1816 | frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
d62a17ae | 1817 | snhlfe_del(snhlfe); |
1818 | } | |
7758e3f3 | 1819 | |
d62a17ae | 1820 | return 0; |
7758e3f3 | 1821 | } |
1822 | ||
1823 | /* | |
1824 | * Create printable string for NHLFE configuration. | |
1825 | */ | |
d62a17ae | 1826 | static char *snhlfe2str(zebra_snhlfe_t *snhlfe, char *buf, int size) |
7758e3f3 | 1827 | { |
d62a17ae | 1828 | buf[0] = '\0'; |
1829 | switch (snhlfe->gtype) { | |
1830 | case NEXTHOP_TYPE_IPV4: | |
1831 | inet_ntop(AF_INET, &snhlfe->gate.ipv4, buf, size); | |
1832 | break; | |
1833 | case NEXTHOP_TYPE_IPV6: | |
1834 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1835 | inet_ntop(AF_INET6, &snhlfe->gate.ipv6, buf, size); | |
1836 | if (snhlfe->ifindex) | |
eab4a5c2 QY |
1837 | strlcat(buf, |
1838 | ifindex2ifname(snhlfe->ifindex, VRF_DEFAULT), | |
1839 | size); | |
d62a17ae | 1840 | break; |
1841 | default: | |
1842 | break; | |
1843 | } | |
7758e3f3 | 1844 | |
d62a17ae | 1845 | return buf; |
7758e3f3 | 1846 | } |
1847 | ||
40c7bdb0 | 1848 | /* |
1849 | * Initialize work queue for processing changed LSPs. | |
1850 | */ | |
2561d12e | 1851 | static int mpls_processq_init(void) |
40c7bdb0 | 1852 | { |
e2353ec2 DS |
1853 | zrouter.lsp_process_q = work_queue_new(zrouter.master, "LSP processing"); |
1854 | if (!zrouter.lsp_process_q) { | |
e914ccbe | 1855 | flog_err(EC_ZEBRA_WQ_NONEXISTENT, |
1c50c1c0 | 1856 | "%s: could not initialise work queue!", __func__); |
d62a17ae | 1857 | return -1; |
1858 | } | |
40c7bdb0 | 1859 | |
e2353ec2 DS |
1860 | zrouter.lsp_process_q->spec.workfunc = &lsp_process; |
1861 | zrouter.lsp_process_q->spec.del_item_data = &lsp_processq_del; | |
1862 | zrouter.lsp_process_q->spec.errorfunc = NULL; | |
1863 | zrouter.lsp_process_q->spec.completion_func = &lsp_processq_complete; | |
1864 | zrouter.lsp_process_q->spec.max_retries = 0; | |
1865 | zrouter.lsp_process_q->spec.hold = 10; | |
33c32282 | 1866 | |
d62a17ae | 1867 | return 0; |
40c7bdb0 | 1868 | } |
1869 | ||
7758e3f3 | 1870 | |
7758e3f3 | 1871 | /* Public functions */ |
1872 | ||
d37f4d6c MS |
1873 | /* |
1874 | * Process LSP update results from zebra dataplane. | |
1875 | */ | |
1876 | void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx) | |
1877 | { | |
1878 | struct zebra_vrf *zvrf; | |
1879 | zebra_ile_t tmp_ile; | |
1880 | struct hash *lsp_table; | |
1881 | zebra_lsp_t *lsp; | |
1882 | zebra_nhlfe_t *nhlfe; | |
1883 | struct nexthop *nexthop; | |
1884 | enum dplane_op_e op; | |
8841f96e | 1885 | enum zebra_dplane_result status; |
d37f4d6c MS |
1886 | |
1887 | op = dplane_ctx_get_op(ctx); | |
1888 | status = dplane_ctx_get_status(ctx); | |
1889 | ||
1890 | if (IS_ZEBRA_DEBUG_DPLANE_DETAIL) | |
1891 | zlog_debug("LSP dplane ctx %p, op %s, in-label %u, result %s", | |
1892 | ctx, dplane_op2str(op), | |
1893 | dplane_ctx_get_in_label(ctx), | |
1894 | dplane_res2str(status)); | |
1895 | ||
1896 | switch (op) { | |
1897 | case DPLANE_OP_LSP_INSTALL: | |
1898 | case DPLANE_OP_LSP_UPDATE: | |
1899 | /* Look for zebra LSP object */ | |
1900 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1901 | if (zvrf == NULL) | |
1902 | break; | |
1903 | ||
1904 | lsp_table = zvrf->lsp_table; | |
1905 | ||
1906 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1907 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1908 | if (lsp == NULL) { | |
1909 | if (IS_ZEBRA_DEBUG_DPLANE) | |
1910 | zlog_debug("LSP ctx %p: in-label %u not found", | |
1911 | ctx, dplane_ctx_get_in_label(ctx)); | |
1912 | break; | |
1913 | } | |
1914 | ||
1915 | /* TODO -- Confirm that this result is still 'current' */ | |
1916 | ||
8841f96e | 1917 | if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) { |
d37f4d6c MS |
1918 | /* Update zebra object */ |
1919 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
ee70f629 | 1920 | frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
d37f4d6c MS |
1921 | nexthop = nhlfe->nexthop; |
1922 | if (!nexthop) | |
1923 | continue; | |
1924 | ||
1925 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
1926 | SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
1927 | } | |
1928 | } else { | |
1929 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); | |
1930 | clear_nhlfe_installed(lsp); | |
1931 | flog_warn(EC_ZEBRA_LSP_INSTALL_FAILURE, | |
1932 | "LSP Install Failure: in-label %u", | |
1933 | lsp->ile.in_label); | |
1934 | } | |
1935 | ||
1936 | break; | |
1937 | ||
1938 | case DPLANE_OP_LSP_DELETE: | |
3fd385c6 DS |
1939 | if (status != ZEBRA_DPLANE_REQUEST_SUCCESS) |
1940 | flog_warn(EC_ZEBRA_LSP_DELETE_FAILURE, | |
1941 | "LSP Deletion Failure: in-label %u", | |
1942 | dplane_ctx_get_in_label(ctx)); | |
d37f4d6c MS |
1943 | break; |
1944 | ||
1945 | default: | |
1946 | break; | |
1947 | ||
1948 | } /* Switch */ | |
1949 | ||
1950 | dplane_ctx_fini(&ctx); | |
1951 | } | |
1952 | ||
104e3ad9 MS |
1953 | /* |
1954 | * Process async dplane notifications. | |
1955 | */ | |
1956 | void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx) | |
1957 | { | |
1958 | struct zebra_vrf *zvrf; | |
1959 | zebra_ile_t tmp_ile; | |
1960 | struct hash *lsp_table; | |
1961 | zebra_lsp_t *lsp; | |
1962 | zebra_nhlfe_t *nhlfe; | |
ee70f629 | 1963 | const struct nhlfe_list_head *head; |
104e3ad9 MS |
1964 | const zebra_nhlfe_t *ctx_nhlfe; |
1965 | struct nexthop *nexthop; | |
1966 | const struct nexthop *ctx_nexthop; | |
1967 | int start_count = 0, end_count = 0; /* Installed counts */ | |
188a00e0 | 1968 | bool changed_p = false; |
104e3ad9 MS |
1969 | bool is_debug = (IS_ZEBRA_DEBUG_DPLANE | IS_ZEBRA_DEBUG_MPLS); |
1970 | ||
1971 | if (is_debug) | |
1972 | zlog_debug("LSP dplane notif, in-label %u", | |
1973 | dplane_ctx_get_in_label(ctx)); | |
1974 | ||
1975 | /* Look for zebra LSP object */ | |
1976 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1977 | if (zvrf == NULL) | |
1978 | goto done; | |
1979 | ||
1980 | lsp_table = zvrf->lsp_table; | |
1981 | ||
1982 | tmp_ile.in_label = dplane_ctx_get_in_label(ctx); | |
1983 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
1984 | if (lsp == NULL) { | |
1985 | if (is_debug) | |
1986 | zlog_debug("dplane LSP notif: in-label %u not found", | |
1987 | dplane_ctx_get_in_label(ctx)); | |
1988 | goto done; | |
1989 | } | |
1990 | ||
1991 | /* | |
1992 | * The dataplane/forwarding plane is notifying zebra about the state | |
188a00e0 MS |
1993 | * of the nexthops associated with this LSP. First, we take a |
1994 | * pre-scan pass to determine whether the LSP has transitioned | |
1995 | * from installed -> uninstalled. In that case, we need to have | |
1996 | * the existing state of the LSP objects available before making | |
1997 | * any changes. | |
104e3ad9 | 1998 | */ |
ee70f629 MS |
1999 | head = dplane_ctx_get_nhlfe_list(ctx); |
2000 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { | |
104e3ad9 MS |
2001 | char buf[NEXTHOP_STRLEN]; |
2002 | ||
2003 | nexthop = nhlfe->nexthop; | |
2004 | if (!nexthop) | |
2005 | continue; | |
2006 | ||
2007 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) | |
2008 | start_count++; | |
2009 | ||
2010 | ctx_nexthop = NULL; | |
ee70f629 | 2011 | frr_each(nhlfe_list_const, head, ctx_nhlfe) { |
104e3ad9 MS |
2012 | ctx_nexthop = ctx_nhlfe->nexthop; |
2013 | if (!ctx_nexthop) | |
2014 | continue; | |
2015 | ||
2016 | if ((ctx_nexthop->type == nexthop->type) && | |
2017 | nexthop_same(ctx_nexthop, nexthop)) { | |
2018 | /* Matched */ | |
2019 | break; | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | if (is_debug) | |
2024 | nexthop2str(nexthop, buf, sizeof(buf)); | |
2025 | ||
2026 | if (ctx_nhlfe && ctx_nexthop) { | |
2027 | if (is_debug) { | |
2028 | const char *tstr = ""; | |
2029 | ||
2030 | if (!CHECK_FLAG(ctx_nhlfe->flags, | |
2031 | NHLFE_FLAG_INSTALLED)) | |
2032 | tstr = "not "; | |
2033 | ||
2034 | zlog_debug("LSP dplane notif: matched nh %s (%sinstalled)", | |
2035 | buf, tstr); | |
2036 | } | |
2037 | ||
188a00e0 | 2038 | /* Test zebra nhlfe install state */ |
104e3ad9 MS |
2039 | if (CHECK_FLAG(ctx_nhlfe->flags, |
2040 | NHLFE_FLAG_INSTALLED)) { | |
188a00e0 MS |
2041 | |
2042 | if (!CHECK_FLAG(nhlfe->flags, | |
2043 | NHLFE_FLAG_INSTALLED)) | |
2044 | changed_p = true; | |
104e3ad9 MS |
2045 | |
2046 | /* Update counter */ | |
2047 | end_count++; | |
188a00e0 MS |
2048 | } else { |
2049 | ||
2050 | if (CHECK_FLAG(nhlfe->flags, | |
2051 | NHLFE_FLAG_INSTALLED)) | |
2052 | changed_p = true; | |
2053 | } | |
2054 | ||
2055 | } else { | |
2056 | /* Not mentioned in lfib set -> uninstalled */ | |
2057 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED) || | |
2058 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE) || | |
2059 | CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)) { | |
2060 | changed_p = true; | |
2061 | } | |
2062 | ||
2063 | if (is_debug) | |
2064 | zlog_debug("LSP dplane notif: no match, nh %s", | |
2065 | buf); | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | if (is_debug) | |
2070 | zlog_debug("LSP dplane notif: lfib start_count %d, end_count %d%s", | |
2071 | start_count, end_count, | |
2072 | changed_p ? ", changed" : ""); | |
2073 | ||
2074 | /* | |
2075 | * Has the LSP become uninstalled? | |
2076 | */ | |
2077 | if (start_count > 0 && end_count == 0) { | |
2078 | /* Inform other lfibs */ | |
2079 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_DELETE, ctx); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * Now we take a second pass and bring the zebra | |
2084 | * nexthop state into sync with the forwarding-plane state. | |
2085 | */ | |
ee70f629 | 2086 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
188a00e0 MS |
2087 | char buf[NEXTHOP_STRLEN]; |
2088 | ||
2089 | nexthop = nhlfe->nexthop; | |
2090 | if (!nexthop) | |
2091 | continue; | |
2092 | ||
2093 | ctx_nexthop = NULL; | |
ee70f629 | 2094 | frr_each(nhlfe_list_const, head, ctx_nhlfe) { |
188a00e0 MS |
2095 | ctx_nexthop = ctx_nhlfe->nexthop; |
2096 | if (!ctx_nexthop) | |
2097 | continue; | |
2098 | ||
2099 | if ((ctx_nexthop->type == nexthop->type) && | |
2100 | nexthop_same(ctx_nexthop, nexthop)) { | |
2101 | /* Matched */ | |
2102 | break; | |
2103 | } | |
2104 | } | |
2105 | ||
2106 | if (is_debug) | |
2107 | nexthop2str(nexthop, buf, sizeof(buf)); | |
2108 | ||
2109 | if (ctx_nhlfe && ctx_nexthop) { | |
2110 | ||
2111 | /* Bring zebra nhlfe install state into sync */ | |
2112 | if (CHECK_FLAG(ctx_nhlfe->flags, | |
2113 | NHLFE_FLAG_INSTALLED)) { | |
2114 | ||
2115 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); | |
2116 | ||
2117 | } else { | |
2118 | ||
104e3ad9 | 2119 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
188a00e0 | 2120 | } |
104e3ad9 MS |
2121 | |
2122 | if (CHECK_FLAG(ctx_nhlfe->nexthop->flags, | |
188a00e0 MS |
2123 | NEXTHOP_FLAG_FIB)) { |
2124 | SET_FLAG(nhlfe->nexthop->flags, | |
2125 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2126 | SET_FLAG(nhlfe->nexthop->flags, |
2127 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2128 | } else { |
2129 | UNSET_FLAG(nhlfe->nexthop->flags, | |
2130 | NEXTHOP_FLAG_ACTIVE); | |
104e3ad9 MS |
2131 | UNSET_FLAG(nhlfe->nexthop->flags, |
2132 | NEXTHOP_FLAG_FIB); | |
188a00e0 MS |
2133 | } |
2134 | ||
104e3ad9 MS |
2135 | } else { |
2136 | /* Not mentioned in lfib set -> uninstalled */ | |
188a00e0 | 2137 | |
104e3ad9 MS |
2138 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED); |
2139 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB); | |
188a00e0 | 2140 | UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
104e3ad9 MS |
2141 | } |
2142 | } | |
2143 | ||
188a00e0 | 2144 | if (end_count > 0) { |
104e3ad9 | 2145 | SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
188a00e0 MS |
2146 | |
2147 | if (changed_p) | |
2148 | dplane_lsp_notif_update(lsp, DPLANE_OP_LSP_UPDATE, ctx); | |
2149 | ||
2150 | } else { | |
104e3ad9 MS |
2151 | UNSET_FLAG(lsp->flags, LSP_FLAG_INSTALLED); |
2152 | clear_nhlfe_installed(lsp); | |
2153 | } | |
2154 | ||
2155 | done: | |
2156 | dplane_ctx_fini(&ctx); | |
2157 | } | |
2158 | ||
a64448ba DS |
2159 | /* |
2160 | * Install dynamic LSP entry. | |
2161 | */ | |
d62a17ae | 2162 | int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn, |
2163 | struct route_entry *re) | |
a64448ba | 2164 | { |
d62a17ae | 2165 | struct route_table *table; |
2166 | zebra_fec_t *fec; | |
a64448ba | 2167 | |
d62a17ae | 2168 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2169 | if (!table) | |
2170 | return -1; | |
a64448ba | 2171 | |
d62a17ae | 2172 | /* See if there is a configured label binding for this FEC. */ |
2173 | fec = fec_find(table, &rn->p); | |
2174 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2175 | return 0; | |
a64448ba | 2176 | |
d62a17ae | 2177 | /* We cannot install a label forwarding entry if local label is the |
2178 | * implicit-null label. | |
2179 | */ | |
70e98a7f | 2180 | if (fec->label == MPLS_LABEL_IMPLICIT_NULL) |
d62a17ae | 2181 | return 0; |
a64448ba | 2182 | |
d62a17ae | 2183 | if (lsp_install(zvrf, fec->label, rn, re)) |
2184 | return -1; | |
a64448ba | 2185 | |
d62a17ae | 2186 | return 0; |
a64448ba DS |
2187 | } |
2188 | ||
2189 | /* | |
2190 | * Uninstall dynamic LSP entry, if any. | |
2191 | */ | |
d62a17ae | 2192 | int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn, |
2193 | struct route_entry *re) | |
a64448ba | 2194 | { |
d62a17ae | 2195 | struct route_table *table; |
2196 | zebra_fec_t *fec; | |
a64448ba | 2197 | |
d62a17ae | 2198 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(&rn->p))]; |
2199 | if (!table) | |
2200 | return -1; | |
a64448ba | 2201 | |
d62a17ae | 2202 | /* See if there is a configured label binding for this FEC. */ |
2203 | fec = fec_find(table, &rn->p); | |
2204 | if (!fec || fec->label == MPLS_INVALID_LABEL) | |
2205 | return 0; | |
a64448ba | 2206 | |
d62a17ae | 2207 | /* Uninstall always removes all dynamic NHLFEs. */ |
2208 | return lsp_uninstall(zvrf, fec->label); | |
a64448ba DS |
2209 | } |
2210 | ||
d4cb23d7 | 2211 | /* |
cd4bb96f MS |
2212 | * Add an NHLFE to an LSP, return the newly-added object. This path only changes |
2213 | * the LSP object - nothing is scheduled for processing, for example. | |
d4cb23d7 MS |
2214 | */ |
2215 | zebra_nhlfe_t *zebra_mpls_lsp_add_nhlfe(zebra_lsp_t *lsp, | |
2216 | enum lsp_types_t lsp_type, | |
2217 | enum nexthop_types_t gtype, | |
2218 | union g_addr *gate, | |
2219 | ifindex_t ifindex, | |
5065db0a | 2220 | uint8_t num_labels, |
cd4bb96f | 2221 | const mpls_label_t *out_labels) |
d4cb23d7 MS |
2222 | { |
2223 | /* Just a public pass-through to the internal implementation */ | |
5065db0a RW |
2224 | return nhlfe_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, |
2225 | out_labels); | |
d4cb23d7 MS |
2226 | } |
2227 | ||
cd4bb96f MS |
2228 | /* |
2229 | * Add a backup NHLFE to an LSP, return the newly-added object. | |
2230 | * This path only changes the LSP object - nothing is scheduled for | |
2231 | * processing, for example. | |
2232 | */ | |
2233 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nhlfe(zebra_lsp_t *lsp, | |
2234 | enum lsp_types_t lsp_type, | |
2235 | enum nexthop_types_t gtype, | |
2236 | union g_addr *gate, | |
2237 | ifindex_t ifindex, | |
2238 | uint8_t num_labels, | |
2239 | const mpls_label_t *out_labels) | |
2240 | { | |
2241 | /* Just a public pass-through to the internal implementation */ | |
2242 | return nhlfe_backup_add(lsp, lsp_type, gtype, gate, ifindex, num_labels, | |
2243 | out_labels); | |
2244 | } | |
2245 | ||
2246 | /* | |
2247 | * Add an NHLFE to an LSP based on a nexthop; return the newly-added object | |
2248 | */ | |
2249 | zebra_nhlfe_t *zebra_mpls_lsp_add_nh(zebra_lsp_t *lsp, | |
2250 | enum lsp_types_t lsp_type, | |
2251 | const struct nexthop *nh) | |
2252 | { | |
2253 | zebra_nhlfe_t *nhlfe; | |
2254 | ||
2255 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2256 | return NULL; | |
2257 | ||
2258 | nhlfe = nhlfe_add(lsp, lsp_type, nh->type, &nh->gate, nh->ifindex, | |
2259 | nh->nh_label->num_labels, nh->nh_label->label); | |
2260 | ||
2261 | return nhlfe; | |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | * Add a backup NHLFE to an LSP based on a nexthop; | |
2266 | * return the newly-added object. | |
2267 | */ | |
2268 | zebra_nhlfe_t *zebra_mpls_lsp_add_backup_nh(zebra_lsp_t *lsp, | |
2269 | enum lsp_types_t lsp_type, | |
2270 | const struct nexthop *nh) | |
2271 | { | |
2272 | zebra_nhlfe_t *nhlfe; | |
2273 | ||
2274 | if (nh->nh_label == NULL || nh->nh_label->num_labels == 0) | |
2275 | return NULL; | |
2276 | ||
2277 | nhlfe = nhlfe_backup_add(lsp, lsp_type, nh->type, &nh->gate, | |
2278 | nh->ifindex, nh->nh_label->num_labels, | |
2279 | nh->nh_label->label); | |
2280 | ||
2281 | return nhlfe; | |
2282 | } | |
2283 | ||
d4cb23d7 MS |
2284 | /* |
2285 | * Free an allocated NHLFE | |
2286 | */ | |
cd4bb96f | 2287 | void zebra_mpls_nhlfe_free(zebra_nhlfe_t *nhlfe) |
d4cb23d7 MS |
2288 | { |
2289 | /* Just a pass-through to the internal implementation */ | |
cd4bb96f | 2290 | nhlfe_free(nhlfe); |
d4cb23d7 MS |
2291 | } |
2292 | ||
5aba114a DS |
2293 | /* |
2294 | * Registration from a client for the label binding for a FEC. If a binding | |
2295 | * already exists, it is informed to the client. | |
28d58fd7 | 2296 | * NOTE: If there is a manually configured label binding, that is used. |
9bedbb1e | 2297 | * Otherwise, if a label index is specified, it means we have to allocate the |
28d58fd7 | 2298 | * label from a locally configured label block (SRGB), if one exists and index |
57592a53 AD |
2299 | * is acceptable. If no label index then just register the specified label. |
2300 | * NOTE2: Either label or label_index is expected to be set to MPLS_INVALID_* | |
2301 | * by the calling function. Register requests with both will be rejected. | |
5aba114a | 2302 | */ |
d62a17ae | 2303 | int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p, |
57592a53 AD |
2304 | uint32_t label, uint32_t label_index, |
2305 | struct zserv *client) | |
d62a17ae | 2306 | { |
2307 | struct route_table *table; | |
2308 | zebra_fec_t *fec; | |
2309 | char buf[BUFSIZ]; | |
57592a53 AD |
2310 | bool new_client; |
2311 | bool label_change = false; | |
d7c0a89a | 2312 | uint32_t old_label; |
57592a53 AD |
2313 | bool have_label_index = (label_index != MPLS_INVALID_LABEL_INDEX); |
2314 | bool is_configured_fec = false; /* indicate statically configured FEC */ | |
d62a17ae | 2315 | |
2316 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2317 | if (!table) | |
2318 | return -1; | |
2319 | ||
2320 | if (IS_ZEBRA_DEBUG_MPLS) | |
2321 | prefix2str(p, buf, BUFSIZ); | |
2322 | ||
57592a53 AD |
2323 | if (label != MPLS_INVALID_LABEL && have_label_index) { |
2324 | flog_err( | |
2325 | EC_ZEBRA_FEC_LABEL_INDEX_LABEL_CONFLICT, | |
2326 | "Rejecting FEC register for %s with both label %u and Label Index %u specified, client %s", | |
2327 | buf, label, label_index, | |
2328 | zebra_route_string(client->proto)); | |
2329 | return -1; | |
2330 | } | |
2331 | ||
d62a17ae | 2332 | /* Locate FEC */ |
2333 | fec = fec_find(table, p); | |
2334 | if (!fec) { | |
57592a53 | 2335 | fec = fec_add(table, p, label, 0, label_index); |
d62a17ae | 2336 | if (!fec) { |
af4c2728 | 2337 | flog_err( |
e914ccbe | 2338 | EC_ZEBRA_FEC_ADD_FAILED, |
d62a17ae | 2339 | "Failed to add FEC %s upon register, client %s", |
2340 | buf, zebra_route_string(client->proto)); | |
2341 | return -1; | |
2342 | } | |
2343 | ||
2344 | old_label = MPLS_INVALID_LABEL; | |
57592a53 | 2345 | new_client = true; |
d62a17ae | 2346 | } else { |
57592a53 AD |
2347 | /* Check if the FEC has been statically defined in the config */ |
2348 | is_configured_fec = fec->flags & FEC_FLAG_CONFIGURED; | |
d62a17ae | 2349 | /* Client may register same FEC with different label index. */ |
2350 | new_client = | |
2351 | (listnode_lookup(fec->client_list, client) == NULL); | |
57592a53 AD |
2352 | if (!new_client && fec->label_index == label_index |
2353 | && fec->label == label) | |
d62a17ae | 2354 | /* Duplicate register */ |
2355 | return 0; | |
2356 | ||
57592a53 | 2357 | /* Save current label, update the FEC */ |
d62a17ae | 2358 | old_label = fec->label; |
2359 | fec->label_index = label_index; | |
2360 | } | |
2361 | ||
2362 | if (new_client) | |
2363 | listnode_add(fec->client_list, client); | |
2364 | ||
2365 | if (IS_ZEBRA_DEBUG_MPLS) | |
57592a53 AD |
2366 | zlog_debug("FEC %s label%s %u %s by client %s%s", buf, |
2367 | have_label_index ? " index" : "", | |
2368 | have_label_index ? label_index : label, | |
2369 | new_client ? "registered" : "updated", | |
2370 | zebra_route_string(client->proto), | |
2371 | is_configured_fec | |
2372 | ? ", but using statically configured label" | |
2373 | : ""); | |
2374 | ||
2375 | /* If not a statically configured FEC, derive the local label | |
2376 | * from label index or use the provided label | |
d62a17ae | 2377 | */ |
57592a53 AD |
2378 | if (!is_configured_fec) { |
2379 | if (have_label_index) | |
2380 | fec_derive_label_from_index(zvrf, fec); | |
2381 | else | |
2382 | fec->label = label; | |
d62a17ae | 2383 | |
2384 | /* If no label change, exit. */ | |
2385 | if (fec->label == old_label) | |
2386 | return 0; | |
2387 | ||
57592a53 | 2388 | label_change = true; |
d62a17ae | 2389 | } |
2390 | ||
2391 | /* If new client or label change, update client and install or uninstall | |
2392 | * label forwarding entry as needed. | |
2393 | */ | |
2394 | /* Inform client of label, if needed. */ | |
2395 | if ((new_client && fec->label != MPLS_INVALID_LABEL) || label_change) { | |
2396 | if (IS_ZEBRA_DEBUG_MPLS) | |
2397 | zlog_debug("Update client label %u", fec->label); | |
2398 | fec_send(fec, client); | |
2399 | } | |
2400 | ||
2401 | if (new_client || label_change) | |
2402 | return fec_change_update_lsp(zvrf, fec, old_label); | |
2403 | ||
2404 | return 0; | |
5aba114a DS |
2405 | } |
2406 | ||
2407 | /* | |
2408 | * Deregistration from a client for the label binding for a FEC. The FEC | |
2409 | * itself is deleted if no other registered clients exist and there is no | |
2410 | * label bound to the FEC. | |
2411 | */ | |
d62a17ae | 2412 | int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p, |
2413 | struct zserv *client) | |
5aba114a | 2414 | { |
d62a17ae | 2415 | struct route_table *table; |
2416 | zebra_fec_t *fec; | |
2417 | char buf[BUFSIZ]; | |
5aba114a | 2418 | |
d62a17ae | 2419 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2420 | if (!table) | |
2421 | return -1; | |
5aba114a | 2422 | |
d62a17ae | 2423 | if (IS_ZEBRA_DEBUG_MPLS) |
2424 | prefix2str(p, buf, BUFSIZ); | |
5aba114a | 2425 | |
d62a17ae | 2426 | fec = fec_find(table, p); |
2427 | if (!fec) { | |
2428 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2429 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 QY |
2430 | "Failed to find FEC %s upon unregister, client %s", |
2431 | buf, zebra_route_string(client->proto)); | |
d62a17ae | 2432 | return -1; |
2433 | } | |
5aba114a | 2434 | |
d62a17ae | 2435 | listnode_delete(fec->client_list, client); |
2436 | ||
2437 | if (IS_ZEBRA_DEBUG_MPLS) | |
2438 | zlog_debug("FEC %s unregistered by client %s", buf, | |
2439 | zebra_route_string(client->proto)); | |
2440 | ||
2441 | /* If not a configured entry, delete the FEC if no other clients. Before | |
2442 | * deleting, see if any LSP needs to be uninstalled. | |
2443 | */ | |
2444 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2445 | && list_isempty(fec->client_list)) { | |
2446 | mpls_label_t old_label = fec->label; | |
2447 | fec->label = MPLS_INVALID_LABEL; /* reset */ | |
2448 | fec_change_update_lsp(zvrf, fec, old_label); | |
2449 | fec_del(fec); | |
2450 | } | |
5aba114a | 2451 | |
d62a17ae | 2452 | return 0; |
5aba114a DS |
2453 | } |
2454 | ||
2455 | /* | |
2456 | * Cleanup any FECs registered by this client. | |
2457 | */ | |
453844ab | 2458 | static int zebra_mpls_cleanup_fecs_for_client(struct zserv *client) |
d62a17ae | 2459 | { |
453844ab | 2460 | struct zebra_vrf *zvrf = vrf_info_lookup(VRF_DEFAULT); |
d62a17ae | 2461 | struct route_node *rn; |
2462 | zebra_fec_t *fec; | |
2463 | struct listnode *node; | |
2464 | struct zserv *fec_client; | |
2465 | int af; | |
2466 | ||
2467 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2468 | if (zvrf->fec_table[af] == NULL) | |
2469 | continue; | |
2470 | ||
2471 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2472 | rn = route_next(rn)) { | |
2473 | fec = rn->info; | |
2474 | if (!fec || list_isempty(fec->client_list)) | |
2475 | continue; | |
2476 | ||
2477 | for (ALL_LIST_ELEMENTS_RO(fec->client_list, node, | |
2478 | fec_client)) { | |
2479 | if (fec_client == client) { | |
2480 | listnode_delete(fec->client_list, | |
2481 | fec_client); | |
2482 | if (!(fec->flags & FEC_FLAG_CONFIGURED) | |
2483 | && list_isempty(fec->client_list)) | |
2484 | fec_del(fec); | |
2485 | break; | |
2486 | } | |
2487 | } | |
2488 | } | |
2489 | } | |
5aba114a | 2490 | |
d62a17ae | 2491 | return 0; |
5aba114a DS |
2492 | } |
2493 | ||
651105b5 RW |
2494 | struct lsp_uninstall_args { |
2495 | struct hash *lsp_table; | |
2496 | enum lsp_types_t type; | |
2497 | }; | |
2498 | ||
2499 | /* | |
2500 | * Cleanup MPLS labels registered by this client. | |
2501 | */ | |
2502 | static int zebra_mpls_cleanup_zclient_labels(struct zserv *client) | |
2503 | { | |
2504 | struct vrf *vrf; | |
2505 | struct zebra_vrf *zvrf; | |
2506 | ||
2507 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
2508 | struct lsp_uninstall_args args; | |
2509 | ||
2510 | zvrf = vrf->info; | |
2511 | if (!zvrf) | |
2512 | continue; | |
2513 | ||
2514 | /* Cleanup LSPs. */ | |
2515 | args.lsp_table = zvrf->lsp_table; | |
2516 | args.type = lsp_type_from_re_type(client->proto); | |
2517 | hash_iterate(zvrf->lsp_table, mpls_lsp_uninstall_all_type, | |
2518 | &args); | |
2519 | ||
2520 | /* Cleanup FTNs. */ | |
90a570ed EDP |
2521 | mpls_ftn_uninstall_all(zvrf, AFI_IP, |
2522 | lsp_type_from_re_type(client->proto)); | |
2523 | mpls_ftn_uninstall_all(zvrf, AFI_IP6, | |
2524 | lsp_type_from_re_type(client->proto)); | |
651105b5 RW |
2525 | } |
2526 | ||
2527 | return 0; | |
2528 | } | |
2529 | ||
f31e084c DS |
2530 | /* |
2531 | * Return FEC (if any) to which this label is bound. | |
2532 | * Note: Only works for per-prefix binding and when the label is not | |
2533 | * implicit-null. | |
2534 | * TODO: Currently walks entire table, can optimize later with another | |
2535 | * hash.. | |
2536 | */ | |
d62a17ae | 2537 | zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf, |
2538 | mpls_label_t label) | |
2539 | { | |
2540 | struct route_node *rn; | |
2541 | zebra_fec_t *fec; | |
2542 | int af; | |
2543 | ||
2544 | for (af = AFI_IP; af < AFI_MAX; af++) { | |
2545 | if (zvrf->fec_table[af] == NULL) | |
2546 | continue; | |
2547 | ||
2548 | for (rn = route_top(zvrf->fec_table[af]); rn; | |
2549 | rn = route_next(rn)) { | |
2550 | if (!rn->info) | |
2551 | continue; | |
2552 | fec = rn->info; | |
2553 | if (fec->label == label) | |
2554 | return fec; | |
2555 | } | |
2556 | } | |
f31e084c | 2557 | |
d62a17ae | 2558 | return NULL; |
f31e084c DS |
2559 | } |
2560 | ||
2561 | /* | |
2562 | * Inform if specified label is currently bound to a FEC or not. | |
2563 | */ | |
d62a17ae | 2564 | int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label) |
f31e084c | 2565 | { |
d62a17ae | 2566 | return (zebra_mpls_fec_for_label(zvrf, label) ? 1 : 0); |
f31e084c DS |
2567 | } |
2568 | ||
2569 | /* | |
5aba114a | 2570 | * Add static FEC to label binding. If there are clients registered for this |
a64448ba DS |
2571 | * FEC, notify them. If there are labeled routes for this FEC, install the |
2572 | * label forwarding entry. | |
9d303b37 | 2573 | */ |
d62a17ae | 2574 | int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p, |
2575 | mpls_label_t in_label) | |
2576 | { | |
2577 | struct route_table *table; | |
2578 | zebra_fec_t *fec; | |
2579 | char buf[BUFSIZ]; | |
2580 | mpls_label_t old_label; | |
2581 | int ret = 0; | |
2582 | ||
2583 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2584 | if (!table) | |
2585 | return -1; | |
2586 | ||
2587 | if (IS_ZEBRA_DEBUG_MPLS) | |
2588 | prefix2str(p, buf, BUFSIZ); | |
2589 | ||
2590 | /* Update existing FEC or create a new one. */ | |
2591 | fec = fec_find(table, p); | |
2592 | if (!fec) { | |
2593 | fec = fec_add(table, p, in_label, FEC_FLAG_CONFIGURED, | |
2594 | MPLS_INVALID_LABEL_INDEX); | |
2595 | if (!fec) { | |
2596 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2597 | flog_err(EC_ZEBRA_FEC_ADD_FAILED, |
1c50c1c0 | 2598 | "Failed to add FEC %s upon config", buf); |
d62a17ae | 2599 | return -1; |
2600 | } | |
2601 | ||
2602 | if (IS_ZEBRA_DEBUG_MPLS) | |
2603 | zlog_debug("Add fec %s label %u", buf, in_label); | |
2604 | } else { | |
2605 | fec->flags |= FEC_FLAG_CONFIGURED; | |
2606 | if (fec->label == in_label) | |
2607 | /* Duplicate config */ | |
2608 | return 0; | |
2609 | ||
2610 | /* Label change, update clients. */ | |
2611 | old_label = fec->label; | |
2612 | if (IS_ZEBRA_DEBUG_MPLS) | |
2613 | zlog_debug("Update fec %s new label %u", buf, in_label); | |
2614 | ||
2615 | fec->label = in_label; | |
2616 | fec_update_clients(fec); | |
2617 | ||
2618 | /* Update label forwarding entries appropriately */ | |
2619 | ret = fec_change_update_lsp(zvrf, fec, old_label); | |
2620 | } | |
2621 | ||
2622 | return ret; | |
f31e084c DS |
2623 | } |
2624 | ||
2625 | /* | |
5aba114a DS |
2626 | * Remove static FEC to label binding. If there are no clients registered |
2627 | * for this FEC, delete the FEC; else notify clients | |
28d58fd7 VV |
2628 | * Note: Upon delete of static binding, if label index exists for this FEC, |
2629 | * client may need to be updated with derived label. | |
f31e084c | 2630 | */ |
d62a17ae | 2631 | int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p) |
2632 | { | |
2633 | struct route_table *table; | |
2634 | zebra_fec_t *fec; | |
2635 | mpls_label_t old_label; | |
2636 | char buf[BUFSIZ]; | |
2637 | ||
2638 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; | |
2639 | if (!table) | |
2640 | return -1; | |
2641 | ||
2642 | fec = fec_find(table, p); | |
2643 | if (!fec) { | |
2644 | prefix2str(p, buf, BUFSIZ); | |
e914ccbe | 2645 | flog_err(EC_ZEBRA_FEC_RM_FAILED, |
1c50c1c0 | 2646 | "Failed to find FEC %s upon delete", buf); |
d62a17ae | 2647 | return -1; |
2648 | } | |
2649 | ||
2650 | if (IS_ZEBRA_DEBUG_MPLS) { | |
2651 | prefix2str(p, buf, BUFSIZ); | |
57592a53 AD |
2652 | zlog_debug("Delete fec %s label %u label index %u", buf, |
2653 | fec->label, fec->label_index); | |
d62a17ae | 2654 | } |
2655 | ||
2656 | old_label = fec->label; | |
2657 | fec->flags &= ~FEC_FLAG_CONFIGURED; | |
2658 | fec->label = MPLS_INVALID_LABEL; | |
2659 | ||
2660 | /* If no client exists, just delete the FEC. */ | |
2661 | if (list_isempty(fec->client_list)) { | |
2662 | fec_del(fec); | |
2663 | return 0; | |
2664 | } | |
2665 | ||
2666 | /* Derive the local label (from label index) or reset it. */ | |
2667 | fec_derive_label_from_index(zvrf, fec); | |
2668 | ||
2669 | /* If there is a label change, update clients. */ | |
2670 | if (fec->label == old_label) | |
2671 | return 0; | |
2672 | fec_update_clients(fec); | |
2673 | ||
2674 | /* Update label forwarding entries appropriately */ | |
2675 | return fec_change_update_lsp(zvrf, fec, old_label); | |
f31e084c DS |
2676 | } |
2677 | ||
2678 | /* | |
2679 | * Display MPLS FEC to label binding configuration (VTY command handler). | |
2680 | */ | |
d62a17ae | 2681 | int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2682 | { |
d62a17ae | 2683 | struct route_node *rn; |
2684 | int af; | |
2685 | zebra_fec_t *fec; | |
2686 | char buf[BUFSIZ]; | |
2687 | int write = 0; | |
f31e084c | 2688 | |
d62a17ae | 2689 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2690 | if (zvrf->fec_table[af] == NULL) | |
2691 | continue; | |
f31e084c | 2692 | |
d62a17ae | 2693 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2694 | rn = route_next(rn)) { | |
2695 | if (!rn->info) | |
2696 | continue; | |
f31e084c | 2697 | |
d62a17ae | 2698 | char lstr[BUFSIZ]; |
2699 | fec = rn->info; | |
f31e084c | 2700 | |
d62a17ae | 2701 | if (!(fec->flags & FEC_FLAG_CONFIGURED)) |
2702 | continue; | |
f31e084c | 2703 | |
d62a17ae | 2704 | write = 1; |
2705 | prefix2str(&rn->p, buf, BUFSIZ); | |
2706 | vty_out(vty, "mpls label bind %s %s\n", buf, | |
2707 | label2str(fec->label, lstr, BUFSIZ)); | |
2708 | } | |
2709 | } | |
f31e084c | 2710 | |
d62a17ae | 2711 | return write; |
f31e084c DS |
2712 | } |
2713 | ||
2714 | /* | |
2715 | * Display MPLS FEC to label binding (VTY command handler). | |
2716 | */ | |
d62a17ae | 2717 | void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf) |
f31e084c | 2718 | { |
d62a17ae | 2719 | struct route_node *rn; |
2720 | int af; | |
f31e084c | 2721 | |
d62a17ae | 2722 | for (af = AFI_IP; af < AFI_MAX; af++) { |
2723 | if (zvrf->fec_table[af] == NULL) | |
2724 | continue; | |
f31e084c | 2725 | |
d62a17ae | 2726 | for (rn = route_top(zvrf->fec_table[af]); rn; |
2727 | rn = route_next(rn)) { | |
2728 | if (!rn->info) | |
2729 | continue; | |
2730 | fec_print(rn->info, vty); | |
2731 | } | |
2732 | } | |
f31e084c DS |
2733 | } |
2734 | ||
2735 | /* | |
2736 | * Display MPLS FEC to label binding for a specific FEC (VTY command handler). | |
2737 | */ | |
d62a17ae | 2738 | void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf, |
2739 | struct prefix *p) | |
f31e084c | 2740 | { |
d62a17ae | 2741 | struct route_table *table; |
2742 | struct route_node *rn; | |
f31e084c | 2743 | |
d62a17ae | 2744 | table = zvrf->fec_table[family2afi(PREFIX_FAMILY(p))]; |
2745 | if (!table) | |
2746 | return; | |
f31e084c | 2747 | |
d62a17ae | 2748 | apply_mask(p); |
2749 | rn = route_node_lookup(table, p); | |
2750 | if (!rn) | |
2751 | return; | |
f31e084c | 2752 | |
d62a17ae | 2753 | route_unlock_node(rn); |
2754 | if (!rn->info) | |
2755 | return; | |
f31e084c | 2756 | |
d62a17ae | 2757 | fec_print(rn->info, vty); |
f31e084c DS |
2758 | } |
2759 | ||
f2e7f4eb MS |
2760 | static void mpls_zebra_nhe_update(struct route_entry *re, afi_t afi, |
2761 | struct nhg_hash_entry *new_nhe) | |
19474c9c SW |
2762 | { |
2763 | struct nhg_hash_entry *nhe; | |
2764 | ||
f2e7f4eb | 2765 | nhe = zebra_nhg_rib_find_nhe(new_nhe, afi); |
19474c9c | 2766 | |
5463ce26 | 2767 | route_entry_update_nhe(re, nhe); |
19474c9c SW |
2768 | } |
2769 | ||
f2e7f4eb MS |
2770 | static bool ftn_update_nexthop(bool add_p, struct nexthop *nexthop, |
2771 | enum lsp_types_t type, | |
2772 | const struct zapi_nexthop *znh) | |
8f77d0ee | 2773 | { |
f2e7f4eb MS |
2774 | if (add_p && nexthop->nh_label_type == ZEBRA_LSP_NONE) |
2775 | nexthop_add_labels(nexthop, type, znh->label_num, znh->labels); | |
2776 | else if (!add_p && nexthop->nh_label_type == type) | |
8f77d0ee DS |
2777 | nexthop_del_labels(nexthop); |
2778 | else | |
2779 | return false; | |
2780 | ||
2781 | return true; | |
2782 | } | |
2783 | ||
f2e7f4eb MS |
2784 | int mpls_ftn_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
2785 | struct prefix *prefix, uint8_t route_type, | |
2786 | unsigned short route_instance) | |
d62a17ae | 2787 | { |
2788 | struct route_table *table; | |
2789 | struct route_node *rn; | |
2790 | struct route_entry *re; | |
2791 | struct nexthop *nexthop; | |
f2e7f4eb | 2792 | struct nhg_hash_entry *new_nhe; |
da137142 | 2793 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 2794 | |
2795 | /* Lookup table. */ | |
da137142 | 2796 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); |
d62a17ae | 2797 | if (!table) |
2798 | return -1; | |
2799 | ||
2800 | /* Lookup existing route */ | |
2801 | rn = route_node_get(table, prefix); | |
a2addae8 | 2802 | RNODE_FOREACH_RE (rn, re) { |
d62a17ae | 2803 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) |
2804 | continue; | |
e132dea0 | 2805 | if (re->type == route_type && re->instance == route_instance) |
d62a17ae | 2806 | break; |
88d88a9c | 2807 | } |
d62a17ae | 2808 | if (re == NULL) |
2809 | return -1; | |
2810 | ||
da137142 | 2811 | /* |
f2e7f4eb MS |
2812 | * Nexthops are now shared by multiple routes, so we have to make |
2813 | * a local copy, modify the copy, then update the route. | |
da137142 | 2814 | */ |
f2e7f4eb | 2815 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 2816 | |
f2e7f4eb MS |
2817 | for (nexthop = new_nhe->nhg.nexthop; nexthop; nexthop = nexthop->next) |
2818 | nexthop_del_labels(nexthop); | |
2819 | ||
2820 | /* Update backup routes/nexthops also, if present. */ | |
2821 | if (zebra_nhg_get_backup_nhg(new_nhe) != NULL) { | |
2822 | for (nexthop = new_nhe->backup_info->nhe->nhg.nexthop; nexthop; | |
2823 | nexthop = nexthop->next) | |
2824 | nexthop_del_labels(nexthop); | |
2825 | } | |
2826 | ||
2827 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
2828 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
2829 | ||
2830 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
2831 | ||
2832 | zebra_nhg_free(new_nhe); | |
2833 | ||
2834 | rib_queue_add(rn); | |
2835 | ||
2836 | return 0; | |
2837 | } | |
2838 | ||
2839 | /* | |
2840 | * Iterate through a list of nexthops, for a match for 'znh'. If found, | |
2841 | * update its labels according to 'add_p', and return 'true' if successful. | |
2842 | */ | |
2843 | static bool ftn_update_znh(bool add_p, enum lsp_types_t type, | |
2844 | struct nexthop *head, const struct zapi_nexthop *znh) | |
2845 | { | |
2846 | bool found = false, success = false; | |
2847 | struct nexthop *nexthop; | |
2848 | ||
2849 | for (nexthop = head; nexthop; nexthop = nexthop->next) { | |
d62a17ae | 2850 | switch (nexthop->type) { |
2851 | case NEXTHOP_TYPE_IPV4: | |
2852 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
f2e7f4eb MS |
2853 | if (znh->type != NEXTHOP_TYPE_IPV4 |
2854 | && znh->type != NEXTHOP_TYPE_IPV4_IFINDEX) | |
d62a17ae | 2855 | continue; |
f2e7f4eb MS |
2856 | if (!IPV4_ADDR_SAME(&nexthop->gate.ipv4, |
2857 | &znh->gate.ipv4)) | |
d62a17ae | 2858 | continue; |
2859 | if (nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
f2e7f4eb | 2860 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2861 | continue; |
f2e7f4eb | 2862 | |
8f77d0ee | 2863 | found = true; |
f2e7f4eb MS |
2864 | |
2865 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2866 | break; | |
2867 | ||
2868 | success = true; | |
8f77d0ee | 2869 | break; |
d62a17ae | 2870 | case NEXTHOP_TYPE_IPV6: |
2871 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
f2e7f4eb MS |
2872 | if (znh->type != NEXTHOP_TYPE_IPV6 |
2873 | && znh->type != NEXTHOP_TYPE_IPV6_IFINDEX) | |
d62a17ae | 2874 | continue; |
f2e7f4eb MS |
2875 | if (!IPV6_ADDR_SAME(&nexthop->gate.ipv6, |
2876 | &znh->gate.ipv6)) | |
d62a17ae | 2877 | continue; |
2878 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
f2e7f4eb | 2879 | && nexthop->ifindex != znh->ifindex) |
d62a17ae | 2880 | continue; |
f2e7f4eb | 2881 | |
8f77d0ee | 2882 | found = true; |
f2e7f4eb MS |
2883 | |
2884 | if (!ftn_update_nexthop(add_p, nexthop, type, znh)) | |
2885 | break; | |
2886 | success = true; | |
8f77d0ee | 2887 | break; |
d62a17ae | 2888 | default: |
2889 | break; | |
2890 | } | |
f2e7f4eb MS |
2891 | |
2892 | if (found) | |
2893 | break; | |
d62a17ae | 2894 | } |
d62a17ae | 2895 | |
f2e7f4eb MS |
2896 | return success; |
2897 | } | |
19474c9c | 2898 | |
f2e7f4eb MS |
2899 | /* |
2900 | * Install/uninstall LSP and (optionally) FEC-To-NHLFE (FTN) bindings, | |
2901 | * using zapi message info. | |
2902 | * There are several changes that need to be made, in several zebra | |
2903 | * data structures, so we want to do all the work required at once. | |
2904 | */ | |
2905 | int mpls_zapi_labels_process(bool add_p, struct zebra_vrf *zvrf, | |
2906 | const struct zapi_labels *zl) | |
2907 | { | |
2908 | int i, counter, ret = 0; | |
2909 | char buf[NEXTHOP_STRLEN], prefix_buf[PREFIX_STRLEN]; | |
2910 | const struct zapi_nexthop *znh; | |
2911 | struct route_table *table; | |
2912 | struct route_node *rn = NULL; | |
2913 | struct route_entry *re = NULL; | |
2914 | struct nhg_hash_entry *new_nhe = NULL; | |
2915 | bool found; | |
2916 | afi_t afi = AFI_IP; | |
2917 | const struct prefix *prefix = NULL; | |
2918 | struct hash *lsp_table; | |
2919 | zebra_ile_t tmp_ile; | |
2920 | zebra_lsp_t *lsp = NULL; | |
19474c9c | 2921 | |
f2e7f4eb MS |
2922 | /* Prep LSP for add case */ |
2923 | if (add_p) { | |
2924 | /* Lookup table. */ | |
2925 | lsp_table = zvrf->lsp_table; | |
2926 | if (!lsp_table) | |
2927 | return -1; | |
2928 | ||
2929 | /* Find or create LSP object */ | |
2930 | tmp_ile.in_label = zl->local_label; | |
2931 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
2932 | if (!lsp) | |
2933 | return -1; | |
da137142 SW |
2934 | } |
2935 | ||
f2e7f4eb MS |
2936 | /* Prep for route/FEC update if requested */ |
2937 | if (CHECK_FLAG(zl->message, ZAPI_LABELS_FTN)) { | |
2938 | prefix = &zl->route.prefix; | |
da137142 | 2939 | |
f2e7f4eb | 2940 | afi = family2afi(prefix->family); |
ce549947 | 2941 | |
f2e7f4eb MS |
2942 | /* Lookup table. */ |
2943 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
2944 | if (table) { | |
2945 | /* Lookup existing route */ | |
2946 | rn = route_node_get(table, prefix); | |
2947 | RNODE_FOREACH_RE(rn, re) { | |
2948 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_REMOVED)) | |
2949 | continue; | |
2950 | if (re->type == zl->route.type && | |
2951 | re->instance == zl->route.instance) | |
2952 | break; | |
2953 | } | |
2954 | } | |
ea6b290b | 2955 | |
f2e7f4eb MS |
2956 | if (re) { |
2957 | /* | |
2958 | * Copy over current nexthops into a temporary group. | |
2959 | * We can't just change the values here since the nhgs | |
2960 | * are shared and if the labels change, we'll need | |
2961 | * to find or create a new nhg. We need to create | |
2962 | * a whole temporary group, make changes to it, | |
2963 | * then attach that to the route. | |
2964 | */ | |
2965 | new_nhe = zebra_nhe_copy(re->nhe, 0); | |
ea6b290b | 2966 | |
f2e7f4eb MS |
2967 | } else { |
2968 | /* | |
2969 | * The old version of the zapi code | |
2970 | * attempted to manage LSPs before trying to | |
2971 | * find a route/FEC, so we'll continue that way. | |
2972 | */ | |
2973 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
2974 | prefix2str(prefix, prefix_buf, | |
2975 | sizeof(prefix_buf)); | |
2976 | zlog_debug("%s: FTN update requested: no route for prefix %s", | |
2977 | __func__, prefix_buf); | |
2978 | } | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | /* | |
2983 | * Use info from the zapi nexthops to add/replace/remove LSP/FECs | |
2984 | */ | |
2985 | ||
2986 | counter = 0; | |
2987 | for (i = 0; i < zl->nexthop_num; i++) { | |
2988 | ||
2989 | znh = &zl->nexthops[i]; | |
2990 | ||
2991 | /* Attempt LSP update */ | |
2992 | if (add_p) | |
2993 | ret = lsp_znh_install(lsp, zl->type, znh); | |
2994 | else | |
2995 | ret = mpls_lsp_uninstall(zvrf, zl->type, | |
2996 | zl->local_label, znh->type, | |
2997 | &znh->gate, znh->ifindex); | |
2998 | if (ret < 0) { | |
2999 | if (IS_ZEBRA_DEBUG_RECV || IS_ZEBRA_DEBUG_MPLS) { | |
3000 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3001 | zlog_debug("%s: Unable to %sinstall LSP: label %u, znh %s", | |
3002 | __func__, (add_p ? "" : "un"), | |
3003 | zl->local_label, buf); | |
3004 | } | |
ea6b290b | 3005 | continue; |
f2e7f4eb MS |
3006 | } |
3007 | ||
3008 | /* Attempt route/FEC update if requested */ | |
3009 | if (re == NULL) | |
3010 | continue; | |
3011 | ||
3012 | /* Search the route's nexthops for a match, and update it. */ | |
3013 | found = ftn_update_znh(add_p, zl->type, new_nhe->nhg.nexthop, | |
3014 | znh); | |
3015 | if (found) { | |
3016 | counter++; | |
3017 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3018 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3019 | prefix2str(prefix, prefix_buf, sizeof(prefix_buf)); | |
3020 | zlog_debug("%s: Unable to update FEC: prefix %s, label %u, znh %s", | |
3021 | __func__, prefix_buf, zl->local_label, buf); | |
3022 | } | |
ea6b290b | 3023 | } |
ea6b290b | 3024 | |
f2e7f4eb MS |
3025 | /* |
3026 | * Process backup LSPs/nexthop entries also. We associate backup | |
3027 | * LSP info with backup nexthops. | |
3028 | */ | |
3029 | if (!CHECK_FLAG(zl->message, ZAPI_LABELS_HAS_BACKUPS)) | |
3030 | goto znh_done; | |
19474c9c | 3031 | |
f2e7f4eb | 3032 | for (i = 0; i < zl->backup_nexthop_num; i++) { |
ea6b290b | 3033 | |
f2e7f4eb | 3034 | znh = &zl->backup_nexthops[i]; |
19474c9c | 3035 | |
f2e7f4eb MS |
3036 | if (add_p) |
3037 | ret = lsp_backup_znh_install(lsp, zl->type, znh); | |
3038 | else | |
3039 | ret = lsp_backup_uninstall(zvrf, zl->type, | |
3040 | zl->local_label, | |
3041 | znh->type, &znh->gate, | |
3042 | znh->ifindex); | |
3043 | ||
3044 | if (ret < 0) { | |
3045 | if (IS_ZEBRA_DEBUG_RECV || | |
3046 | IS_ZEBRA_DEBUG_MPLS) { | |
3047 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3048 | zlog_debug("%s: Unable to %sinstall backup LSP: label %u, znh %s", | |
3049 | __func__, (add_p ? "" : "un"), | |
3050 | zl->local_label, buf); | |
3051 | } | |
3052 | continue; | |
3053 | } | |
19474c9c | 3054 | |
f2e7f4eb MS |
3055 | /* Attempt backup nexthop/FEC update if requested */ |
3056 | if (re == NULL || zebra_nhg_get_backup_nhg(new_nhe) == NULL) | |
3057 | continue; | |
19474c9c | 3058 | |
f2e7f4eb MS |
3059 | /* Search the route's backup nexthops for a match |
3060 | * and update it. | |
3061 | */ | |
3062 | found = ftn_update_znh(add_p, zl->type, | |
3063 | new_nhe->backup_info->nhe->nhg.nexthop, | |
3064 | znh); | |
3065 | if (found) { | |
3066 | counter++; | |
3067 | } else if (IS_ZEBRA_DEBUG_RECV | IS_ZEBRA_DEBUG_MPLS) { | |
3068 | zapi_nexthop2str(znh, buf, sizeof(buf)); | |
3069 | prefix2str(prefix, prefix_buf, sizeof(prefix_buf)); | |
3070 | zlog_debug("%s: Unable to update backup FEC: prefix %s, label %u, znh %s", | |
3071 | __func__, prefix_buf, zl->local_label, buf); | |
3072 | } | |
3073 | } | |
ea6b290b | 3074 | |
f2e7f4eb MS |
3075 | znh_done: |
3076 | ||
3077 | /* | |
3078 | * If we made changes, update the route, and schedule it | |
3079 | * for rib processing | |
3080 | */ | |
3081 | if (re != NULL && counter > 0) { | |
3082 | assert(rn != NULL); | |
3083 | ||
3084 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3085 | SET_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED); | |
3086 | ||
3087 | mpls_zebra_nhe_update(re, afi, new_nhe); | |
3088 | ||
3089 | rib_queue_add(rn); | |
3090 | } | |
3091 | ||
3092 | if (new_nhe) | |
3093 | zebra_nhg_free(new_nhe); | |
3094 | ||
3095 | return ret; | |
ea6b290b RW |
3096 | } |
3097 | ||
ce549947 RW |
3098 | /* |
3099 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3100 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3101 | * the out-label for an existing NHLFE (update case). | |
3102 | */ | |
cd4bb96f MS |
3103 | static zebra_nhlfe_t * |
3104 | lsp_add_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3105 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3106 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3107 | ifindex_t ifindex) | |
d62a17ae | 3108 | { |
d62a17ae | 3109 | zebra_nhlfe_t *nhlfe; |
cd4bb96f | 3110 | char buf[MPLS_LABEL_STRLEN]; |
e4a1ec74 | 3111 | |
ee70f629 | 3112 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex); |
d62a17ae | 3113 | if (nhlfe) { |
3114 | struct nexthop *nh = nhlfe->nexthop; | |
3115 | ||
3116 | assert(nh); | |
3117 | assert(nh->nh_label); | |
3118 | ||
3119 | /* Clear deleted flag (in case it was set) */ | |
3120 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
5065db0a RW |
3121 | if (nh->nh_label->num_labels == num_out_labels |
3122 | && !memcmp(nh->nh_label->label, out_labels, | |
3123 | sizeof(mpls_label_t) * num_out_labels)) | |
d62a17ae | 3124 | /* No change */ |
cd4bb96f | 3125 | return nhlfe; |
d62a17ae | 3126 | |
3127 | if (IS_ZEBRA_DEBUG_MPLS) { | |
e4a1ec74 MS |
3128 | char buf2[MPLS_LABEL_STRLEN]; |
3129 | char buf3[MPLS_LABEL_STRLEN]; | |
5065db0a | 3130 | |
cd4bb96f | 3131 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
5065db0a RW |
3132 | mpls_label2str(num_out_labels, out_labels, buf2, |
3133 | sizeof(buf2), 0); | |
3134 | mpls_label2str(nh->nh_label->num_labels, | |
3135 | nh->nh_label->label, buf3, sizeof(buf3), | |
3136 | 0); | |
3137 | ||
cd4bb96f MS |
3138 | zlog_debug("LSP in-label %u type %d nexthop %s out-label(s) changed to %s (old %s)", |
3139 | lsp->ile.in_label, type, buf, buf2, buf3); | |
d62a17ae | 3140 | } |
3141 | ||
5065db0a RW |
3142 | /* Update out label(s), trigger processing. */ |
3143 | if (nh->nh_label->num_labels == num_out_labels) | |
3144 | memcpy(nh->nh_label->label, out_labels, | |
3145 | sizeof(mpls_label_t) * num_out_labels); | |
3146 | else { | |
3147 | nexthop_del_labels(nh); | |
3148 | nexthop_add_labels(nh, type, num_out_labels, | |
3149 | out_labels); | |
3150 | } | |
d62a17ae | 3151 | } else { |
3152 | /* Add LSP entry to this nexthop */ | |
5065db0a RW |
3153 | nhlfe = nhlfe_add(lsp, type, gtype, gate, ifindex, |
3154 | num_out_labels, out_labels); | |
d62a17ae | 3155 | if (!nhlfe) |
cd4bb96f | 3156 | return NULL; |
d62a17ae | 3157 | |
3158 | if (IS_ZEBRA_DEBUG_MPLS) { | |
cd4bb96f | 3159 | char buf2[MPLS_LABEL_STRLEN]; |
5065db0a | 3160 | |
cd4bb96f | 3161 | nhlfe2str(nhlfe, buf, sizeof(buf)); |
5065db0a RW |
3162 | mpls_label2str(num_out_labels, out_labels, buf2, |
3163 | sizeof(buf2), 0); | |
3164 | ||
cd4bb96f MS |
3165 | zlog_debug("Add LSP in-label %u type %d nexthop %s out-label(s) %s", |
3166 | lsp->ile.in_label, type, buf, buf2); | |
d62a17ae | 3167 | } |
3168 | ||
3169 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3170 | } | |
3171 | ||
3172 | /* Mark NHLFE, queue LSP for processing. */ | |
3173 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
cd4bb96f MS |
3174 | |
3175 | return nhlfe; | |
3176 | } | |
3177 | ||
3178 | /* | |
3179 | * Install/update a NHLFE for an LSP in the forwarding table. This may be | |
3180 | * a new LSP entry or a new NHLFE for an existing in-label or an update of | |
3181 | * the out-label for an existing NHLFE (update case). | |
3182 | */ | |
3183 | static zebra_nhlfe_t * | |
3184 | lsp_add_backup_nhlfe(zebra_lsp_t *lsp, enum lsp_types_t type, | |
3185 | uint8_t num_out_labels, const mpls_label_t *out_labels, | |
3186 | enum nexthop_types_t gtype, const union g_addr *gate, | |
3187 | ifindex_t ifindex) | |
3188 | { | |
3189 | zebra_nhlfe_t *nhlfe; | |
3190 | char buf[MPLS_LABEL_STRLEN]; | |
3191 | ||
3192 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, gate, ifindex); | |
3193 | if (nhlfe) { | |
3194 | struct nexthop *nh = nhlfe->nexthop; | |
3195 | ||
3196 | assert(nh); | |
3197 | assert(nh->nh_label); | |
3198 | ||
3199 | /* Clear deleted flag (in case it was set) */ | |
3200 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3201 | if (nh->nh_label->num_labels == num_out_labels | |
3202 | && !memcmp(nh->nh_label->label, out_labels, | |
3203 | sizeof(mpls_label_t) * num_out_labels)) | |
3204 | /* No change */ | |
3205 | return nhlfe; | |
3206 | ||
3207 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3208 | char buf2[MPLS_LABEL_STRLEN]; | |
3209 | char buf3[MPLS_LABEL_STRLEN]; | |
3210 | ||
3211 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3212 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3213 | sizeof(buf2), 0); | |
3214 | mpls_label2str(nh->nh_label->num_labels, | |
3215 | nh->nh_label->label, buf3, sizeof(buf3), | |
3216 | 0); | |
3217 | ||
3218 | zlog_debug("LSP in-label %u type %d backup nexthop %s out-label(s) changed to %s (old %s)", | |
3219 | lsp->ile.in_label, type, buf, buf2, buf3); | |
3220 | } | |
3221 | ||
3222 | /* Update out label(s), trigger processing. */ | |
3223 | if (nh->nh_label->num_labels == num_out_labels) | |
3224 | memcpy(nh->nh_label->label, out_labels, | |
3225 | sizeof(mpls_label_t) * num_out_labels); | |
3226 | else { | |
3227 | nexthop_del_labels(nh); | |
3228 | nexthop_add_labels(nh, type, num_out_labels, | |
3229 | out_labels); | |
3230 | } | |
3231 | } else { | |
3232 | /* Add LSP entry to this nexthop */ | |
3233 | nhlfe = nhlfe_backup_add(lsp, type, gtype, gate, ifindex, | |
3234 | num_out_labels, out_labels); | |
3235 | if (!nhlfe) | |
3236 | return NULL; | |
3237 | ||
3238 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3239 | char buf2[MPLS_LABEL_STRLEN]; | |
3240 | ||
3241 | nhlfe2str(nhlfe, buf, sizeof(buf)); | |
3242 | mpls_label2str(num_out_labels, out_labels, buf2, | |
3243 | sizeof(buf2), 0); | |
3244 | ||
3245 | zlog_debug("Add LSP in-label %u type %d backup nexthop %s out-label(s) %s", | |
3246 | lsp->ile.in_label, type, buf, buf2); | |
3247 | } | |
3248 | ||
3249 | lsp->addr_family = NHLFE_FAMILY(nhlfe); | |
3250 | } | |
3251 | ||
3252 | /* Mark NHLFE, queue LSP for processing. */ | |
3253 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3254 | ||
3255 | return nhlfe; | |
3256 | } | |
3257 | ||
3258 | /* | |
3259 | * Install an LSP and forwarding entry; used primarily | |
3260 | * from zapi message processing. | |
3261 | */ | |
3262 | int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3263 | mpls_label_t in_label, uint8_t num_out_labels, | |
3264 | const mpls_label_t *out_labels, enum nexthop_types_t gtype, | |
3265 | const union g_addr *gate, ifindex_t ifindex) | |
3266 | { | |
3267 | struct hash *lsp_table; | |
3268 | zebra_ile_t tmp_ile; | |
3269 | zebra_lsp_t *lsp; | |
3270 | zebra_nhlfe_t *nhlfe; | |
3271 | ||
3272 | /* Lookup table. */ | |
3273 | lsp_table = zvrf->lsp_table; | |
3274 | if (!lsp_table) | |
3275 | return -1; | |
3276 | ||
3277 | /* Find or create LSP object */ | |
3278 | tmp_ile.in_label = in_label; | |
3279 | lsp = hash_get(lsp_table, &tmp_ile, lsp_alloc); | |
3280 | if (!lsp) | |
3281 | return -1; | |
3282 | ||
3283 | nhlfe = lsp_add_nhlfe(lsp, type, num_out_labels, out_labels, gtype, | |
3284 | gate, ifindex); | |
3285 | if (nhlfe == NULL) | |
3286 | return -1; | |
3287 | ||
3288 | /* Queue LSP for processing. */ | |
3289 | if (lsp_processq_add(lsp)) | |
3290 | return -1; | |
3291 | ||
3292 | return 0; | |
3293 | } | |
3294 | ||
3295 | /* | |
3296 | * Install or replace NHLFE, using info from zapi nexthop | |
3297 | */ | |
f2e7f4eb MS |
3298 | static int lsp_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3299 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3300 | { |
cd4bb96f MS |
3301 | zebra_nhlfe_t *nhlfe; |
3302 | ||
cd4bb96f MS |
3303 | nhlfe = lsp_add_nhlfe(lsp, type, znh->label_num, znh->labels, |
3304 | znh->type, &znh->gate, znh->ifindex); | |
3305 | if (nhlfe == NULL) | |
3306 | return -1; | |
3307 | ||
3308 | /* Update backup info if present */ | |
3309 | if (CHECK_FLAG(znh->flags, ZAPI_NEXTHOP_FLAG_HAS_BACKUP)) { | |
3310 | nhlfe->nexthop->backup_idx = znh->backup_idx; | |
3311 | SET_FLAG(nhlfe->nexthop->flags, NEXTHOP_FLAG_HAS_BACKUP); | |
3312 | } | |
3313 | ||
3314 | /* Queue LSP for processing. */ | |
3315 | if (lsp_processq_add(lsp)) | |
3316 | return -1; | |
3317 | ||
3318 | return 0; | |
3319 | } | |
3320 | ||
3321 | /* | |
3322 | * Install/update backup NHLFE for an LSP, using info from a zapi message. | |
3323 | */ | |
f2e7f4eb MS |
3324 | static int lsp_backup_znh_install(zebra_lsp_t *lsp, enum lsp_types_t type, |
3325 | const struct zapi_nexthop *znh) | |
cd4bb96f | 3326 | { |
cd4bb96f MS |
3327 | zebra_nhlfe_t *nhlfe; |
3328 | ||
f2e7f4eb MS |
3329 | nhlfe = lsp_add_backup_nhlfe(lsp, type, znh->label_num, |
3330 | znh->labels, znh->type, &znh->gate, | |
3331 | znh->ifindex); | |
cd4bb96f MS |
3332 | if (nhlfe == NULL) { |
3333 | if (IS_ZEBRA_DEBUG_MPLS) | |
3334 | zlog_debug("%s: unable to add backup nhlfe, label: %u", | |
f2e7f4eb | 3335 | __func__, lsp->ile.in_label); |
cd4bb96f MS |
3336 | return -1; |
3337 | } | |
3338 | ||
3339 | /* Queue LSP for processing. */ | |
d62a17ae | 3340 | if (lsp_processq_add(lsp)) |
3341 | return -1; | |
3342 | ||
3343 | return 0; | |
ce549947 RW |
3344 | } |
3345 | ||
3346 | /* | |
3347 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3348 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3349 | */ | |
d62a17ae | 3350 | int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3351 | mpls_label_t in_label, enum nexthop_types_t gtype, | |
e4a1ec74 | 3352 | const union g_addr *gate, ifindex_t ifindex) |
d62a17ae | 3353 | { |
3354 | struct hash *lsp_table; | |
3355 | zebra_ile_t tmp_ile; | |
3356 | zebra_lsp_t *lsp; | |
3357 | zebra_nhlfe_t *nhlfe; | |
3358 | char buf[BUFSIZ]; | |
3359 | ||
3360 | /* Lookup table. */ | |
3361 | lsp_table = zvrf->lsp_table; | |
3362 | if (!lsp_table) | |
3363 | return -1; | |
3364 | ||
3365 | /* If entry is not present, exit. */ | |
3366 | tmp_ile.in_label = in_label; | |
3367 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3368 | if (!lsp) | |
3369 | return 0; | |
ee70f629 | 3370 | nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex); |
d62a17ae | 3371 | if (!nhlfe) |
3372 | return 0; | |
3373 | ||
3374 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3375 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
3376 | zlog_debug("Del LSP in-label %u type %d nexthop %s flags 0x%x", | |
3377 | in_label, type, buf, nhlfe->flags); | |
3378 | } | |
3379 | ||
3380 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
3381 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
3382 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3383 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3384 | if (lsp_processq_add(lsp)) | |
3385 | return -1; | |
3386 | } else { | |
3387 | nhlfe_del(nhlfe); | |
3388 | ||
3389 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
f2e7f4eb | 3390 | lsp_check_free(lsp_table, &lsp); |
d62a17ae | 3391 | |
d62a17ae | 3392 | } |
3393 | return 0; | |
ce549947 RW |
3394 | } |
3395 | ||
f2e7f4eb MS |
3396 | /* |
3397 | * Uninstall a particular NHLFE in the forwarding table. If this is | |
3398 | * the only NHLFE, the entire LSP forwarding entry has to be deleted. | |
3399 | */ | |
3400 | static int lsp_backup_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type, | |
3401 | mpls_label_t in_label, | |
3402 | enum nexthop_types_t gtype, | |
3403 | const union g_addr *gate, ifindex_t ifindex) | |
3404 | { | |
3405 | struct hash *lsp_table; | |
3406 | zebra_ile_t tmp_ile; | |
3407 | zebra_lsp_t *lsp; | |
3408 | zebra_nhlfe_t *nhlfe; | |
3409 | char buf[BUFSIZ]; | |
3410 | ||
3411 | /* Lookup table. */ | |
3412 | lsp_table = zvrf->lsp_table; | |
3413 | if (!lsp_table) | |
3414 | return -1; | |
3415 | ||
3416 | /* If entry is not present, exit. */ | |
3417 | tmp_ile.in_label = in_label; | |
3418 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3419 | if (!lsp) | |
3420 | return 0; | |
3421 | nhlfe = nhlfe_find(&lsp->backup_nhlfe_list, type, gtype, gate, ifindex); | |
3422 | if (!nhlfe) | |
3423 | return 0; | |
3424 | ||
3425 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3426 | nhlfe2str(nhlfe, buf, BUFSIZ); | |
3427 | zlog_debug("Del backup LSP in-label %u type %d nexthop %s flags 0x%x", | |
3428 | in_label, type, buf, nhlfe->flags); | |
3429 | } | |
3430 | ||
3431 | /* Mark NHLFE for delete or directly delete, as appropriate. */ | |
3432 | if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_INSTALLED)) { | |
3433 | UNSET_FLAG(nhlfe->flags, NHLFE_FLAG_CHANGED); | |
3434 | SET_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED); | |
3435 | if (lsp_processq_add(lsp)) | |
3436 | return -1; | |
3437 | } else { | |
3438 | nhlfe_del(nhlfe); | |
3439 | ||
3440 | /* Free LSP entry if no other NHLFEs and not scheduled. */ | |
3441 | lsp_check_free(lsp_table, &lsp); | |
3442 | } | |
3443 | return 0; | |
3444 | } | |
3445 | ||
ea6b290b RW |
3446 | int mpls_lsp_uninstall_all_vrf(struct zebra_vrf *zvrf, enum lsp_types_t type, |
3447 | mpls_label_t in_label) | |
3448 | { | |
3449 | struct hash *lsp_table; | |
3450 | zebra_ile_t tmp_ile; | |
3451 | zebra_lsp_t *lsp; | |
3452 | ||
3453 | /* Lookup table. */ | |
3454 | lsp_table = zvrf->lsp_table; | |
3455 | if (!lsp_table) | |
3456 | return -1; | |
3457 | ||
3458 | /* If entry is not present, exit. */ | |
3459 | tmp_ile.in_label = in_label; | |
3460 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3461 | if (!lsp) | |
3462 | return 0; | |
3463 | ||
3464 | return mpls_lsp_uninstall_all(lsp_table, lsp, type); | |
3465 | } | |
3466 | ||
ce549947 | 3467 | /* |
651105b5 | 3468 | * Uninstall all NHLFEs for a particular LSP forwarding entry. |
ce549947 RW |
3469 | * If no other NHLFEs exist, the entry would be deleted. |
3470 | */ | |
651105b5 | 3471 | static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt) |
ce549947 | 3472 | { |
651105b5 | 3473 | struct lsp_uninstall_args *args = ctxt; |
d62a17ae | 3474 | zebra_lsp_t *lsp; |
3475 | struct hash *lsp_table; | |
ce549947 | 3476 | |
e3b78da8 | 3477 | lsp = (zebra_lsp_t *)bucket->data; |
ee70f629 | 3478 | if (nhlfe_list_first(&lsp->nhlfe_list) == NULL) |
d62a17ae | 3479 | return; |
ce549947 | 3480 | |
651105b5 | 3481 | lsp_table = args->lsp_table; |
d62a17ae | 3482 | if (!lsp_table) |
3483 | return; | |
ce549947 | 3484 | |
651105b5 | 3485 | mpls_lsp_uninstall_all(lsp_table, lsp, args->type); |
ce549947 RW |
3486 | } |
3487 | ||
3488 | /* | |
651105b5 RW |
3489 | * Uninstall all FEC-To-NHLFE (FTN) bindings of the given address-family and |
3490 | * LSP type. | |
ce549947 | 3491 | */ |
651105b5 RW |
3492 | static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf, |
3493 | int afi, enum lsp_types_t lsp_type) | |
d62a17ae | 3494 | { |
3495 | struct route_table *table; | |
3496 | struct route_node *rn; | |
3497 | struct route_entry *re; | |
3498 | struct nexthop *nexthop; | |
f2e7f4eb MS |
3499 | struct nexthop_group *nhg; |
3500 | bool update; | |
d62a17ae | 3501 | |
3502 | /* Process routes of interested address-families. */ | |
3503 | table = zebra_vrf_table(afi, SAFI_UNICAST, zvrf_id(zvrf)); | |
3504 | if (!table) | |
3505 | return; | |
3506 | ||
3507 | for (rn = route_top(table); rn; rn = route_next(rn)) { | |
f2e7f4eb MS |
3508 | update = false; |
3509 | ||
a2addae8 | 3510 | RNODE_FOREACH_RE (rn, re) { |
f2e7f4eb | 3511 | struct nhg_hash_entry *new_nhe; |
da137142 | 3512 | |
f2e7f4eb | 3513 | new_nhe = zebra_nhe_copy(re->nhe, 0); |
da137142 | 3514 | |
f2e7f4eb MS |
3515 | nhg = &new_nhe->nhg; |
3516 | for (nexthop = nhg->nexthop; nexthop; | |
407c87a6 | 3517 | nexthop = nexthop->next) { |
651105b5 | 3518 | if (nexthop->nh_label_type != lsp_type) |
407c87a6 DS |
3519 | continue; |
3520 | ||
d62a17ae | 3521 | nexthop_del_labels(nexthop); |
3522 | SET_FLAG(re->status, ROUTE_ENTRY_CHANGED); | |
3523 | SET_FLAG(re->status, | |
332ad713 | 3524 | ROUTE_ENTRY_LABELS_CHANGED); |
f2e7f4eb MS |
3525 | update = true; |
3526 | } | |
3527 | ||
3528 | /* Check for backup info and update that also */ | |
3529 | nhg = zebra_nhg_get_backup_nhg(new_nhe); | |
3530 | if (nhg != NULL) { | |
3531 | for (nexthop = nhg->nexthop; nexthop; | |
3532 | nexthop = nexthop->next) { | |
3533 | if (nexthop->nh_label_type != lsp_type) | |
3534 | continue; | |
3535 | ||
3536 | nexthop_del_labels(nexthop); | |
3537 | SET_FLAG(re->status, | |
3538 | ROUTE_ENTRY_CHANGED); | |
3539 | SET_FLAG(re->status, | |
3540 | ROUTE_ENTRY_LABELS_CHANGED); | |
3541 | update = true; | |
3542 | } | |
d62a17ae | 3543 | } |
da137142 | 3544 | |
19474c9c | 3545 | if (CHECK_FLAG(re->status, ROUTE_ENTRY_LABELS_CHANGED)) |
f2e7f4eb | 3546 | mpls_zebra_nhe_update(re, afi, new_nhe); |
da137142 | 3547 | |
f2e7f4eb | 3548 | zebra_nhg_free(new_nhe); |
407c87a6 | 3549 | } |
d62a17ae | 3550 | |
3551 | if (update) | |
3552 | rib_queue_add(rn); | |
3553 | } | |
ce549947 RW |
3554 | } |
3555 | ||
1c1cf002 | 3556 | #if defined(HAVE_CUMULUS) |
7758e3f3 | 3557 | /* |
3558 | * Check that the label values used in LSP creation are consistent. The | |
3559 | * main criteria is that if there is ECMP, the label operation must still | |
3560 | * be consistent - i.e., all paths either do a swap or do PHP. This is due | |
3561 | * to current HW restrictions. | |
3562 | */ | |
d62a17ae | 3563 | int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf, |
3564 | mpls_label_t in_label, | |
3565 | mpls_label_t out_label, | |
3566 | enum nexthop_types_t gtype, | |
3567 | union g_addr *gate, ifindex_t ifindex) | |
3568 | { | |
3569 | struct hash *slsp_table; | |
3570 | zebra_ile_t tmp_ile; | |
3571 | zebra_slsp_t *slsp; | |
3572 | zebra_snhlfe_t *snhlfe; | |
3573 | ||
3574 | /* Lookup table. */ | |
3575 | slsp_table = zvrf->slsp_table; | |
3576 | if (!slsp_table) | |
3577 | return 0; | |
3578 | ||
3579 | /* If entry is not present, exit. */ | |
3580 | tmp_ile.in_label = in_label; | |
3581 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3582 | if (!slsp) | |
3583 | return 1; | |
3584 | ||
3585 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3586 | if (snhlfe) { | |
3587 | if (snhlfe->out_label == out_label) | |
3588 | return 1; | |
3589 | ||
3590 | /* If not only NHLFE, cannot allow label change. */ | |
ee70f629 MS |
3591 | if (snhlfe != snhlfe_list_first(&slsp->snhlfe_list) || |
3592 | snhlfe_list_next(&slsp->snhlfe_list, snhlfe) != NULL) | |
d62a17ae | 3593 | return 0; |
3594 | } else { | |
3595 | /* If other NHLFEs exist, label operation must match. */ | |
ee70f629 MS |
3596 | snhlfe = snhlfe_list_first(&slsp->snhlfe_list); |
3597 | if (snhlfe != NULL) { | |
d62a17ae | 3598 | int cur_op, new_op; |
3599 | ||
ee70f629 MS |
3600 | cur_op = (snhlfe->out_label == |
3601 | MPLS_LABEL_IMPLICIT_NULL); | |
70e98a7f | 3602 | new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL); |
d62a17ae | 3603 | if (cur_op != new_op) |
3604 | return 0; | |
3605 | } | |
3606 | } | |
3607 | ||
3608 | /* Label values are good. */ | |
3609 | return 1; | |
7758e3f3 | 3610 | } |
1c1cf002 | 3611 | #endif /* HAVE_CUMULUS */ |
7758e3f3 | 3612 | |
3613 | /* | |
3614 | * Add static LSP entry. This may be the first entry for this incoming label | |
3615 | * or an additional nexthop; an existing entry may also have outgoing label | |
3616 | * changed. | |
3617 | * Note: The label operation (swap or PHP) is common for the LSP entry (all | |
3618 | * NHLFEs). | |
3619 | */ | |
d62a17ae | 3620 | int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3621 | mpls_label_t out_label, | |
3622 | enum nexthop_types_t gtype, union g_addr *gate, | |
3623 | ifindex_t ifindex) | |
3624 | { | |
3625 | struct hash *slsp_table; | |
3626 | zebra_ile_t tmp_ile; | |
3627 | zebra_slsp_t *slsp; | |
3628 | zebra_snhlfe_t *snhlfe; | |
3629 | char buf[BUFSIZ]; | |
3630 | ||
3631 | /* Lookup table. */ | |
3632 | slsp_table = zvrf->slsp_table; | |
3633 | if (!slsp_table) | |
3634 | return -1; | |
3635 | ||
e4a1ec74 | 3636 | /* Find or create LSP. */ |
d62a17ae | 3637 | tmp_ile.in_label = in_label; |
3638 | slsp = hash_get(slsp_table, &tmp_ile, slsp_alloc); | |
3639 | if (!slsp) | |
3640 | return -1; | |
e4a1ec74 | 3641 | |
d62a17ae | 3642 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); |
3643 | if (snhlfe) { | |
3644 | if (snhlfe->out_label == out_label) | |
3645 | /* No change */ | |
3646 | return 0; | |
3647 | ||
3648 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3649 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3650 | zlog_debug( | |
3651 | "Upd static LSP in-label %u nexthop %s " | |
3652 | "out-label %u (old %u)", | |
3653 | in_label, buf, out_label, snhlfe->out_label); | |
3654 | } | |
3655 | snhlfe->out_label = out_label; | |
3656 | } else { | |
3657 | /* Add static LSP entry to this nexthop */ | |
3658 | snhlfe = snhlfe_add(slsp, gtype, gate, ifindex, out_label); | |
3659 | if (!snhlfe) | |
3660 | return -1; | |
3661 | ||
3662 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3663 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3664 | zlog_debug( | |
3665 | "Add static LSP in-label %u nexthop %s out-label %u", | |
3666 | in_label, buf, out_label); | |
3667 | } | |
3668 | } | |
3669 | ||
3670 | /* (Re)Install LSP in the main table. */ | |
5065db0a RW |
3671 | if (mpls_lsp_install(zvrf, ZEBRA_LSP_STATIC, in_label, 1, &out_label, |
3672 | gtype, gate, ifindex)) | |
d62a17ae | 3673 | return -1; |
3674 | ||
3675 | return 0; | |
7758e3f3 | 3676 | } |
3677 | ||
3678 | /* | |
3679 | * Delete static LSP entry. This may be the delete of one particular | |
3680 | * NHLFE for this incoming label or the delete of the entire entry (i.e., | |
3681 | * all NHLFEs). | |
3682 | * NOTE: Delete of the only NHLFE will also end up deleting the entire | |
3683 | * LSP configuration. | |
3684 | */ | |
d62a17ae | 3685 | int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label, |
3686 | enum nexthop_types_t gtype, union g_addr *gate, | |
3687 | ifindex_t ifindex) | |
3688 | { | |
3689 | struct hash *slsp_table; | |
3690 | zebra_ile_t tmp_ile; | |
3691 | zebra_slsp_t *slsp; | |
3692 | zebra_snhlfe_t *snhlfe; | |
3693 | ||
3694 | /* Lookup table. */ | |
3695 | slsp_table = zvrf->slsp_table; | |
3696 | if (!slsp_table) | |
3697 | return -1; | |
3698 | ||
3699 | /* If entry is not present, exit. */ | |
3700 | tmp_ile.in_label = in_label; | |
3701 | slsp = hash_lookup(slsp_table, &tmp_ile); | |
3702 | if (!slsp) | |
3703 | return 0; | |
3704 | ||
3705 | /* Is it delete of entire LSP or a specific NHLFE? */ | |
3706 | if (gtype == NEXTHOP_TYPE_BLACKHOLE) { | |
3707 | if (IS_ZEBRA_DEBUG_MPLS) | |
3708 | zlog_debug("Del static LSP in-label %u", in_label); | |
3709 | ||
3710 | /* Uninstall entire LSP from the main table. */ | |
3711 | mpls_static_lsp_uninstall_all(zvrf, in_label); | |
3712 | ||
3713 | /* Delete all static NHLFEs */ | |
3714 | snhlfe_del_all(slsp); | |
3715 | } else { | |
3716 | /* Find specific NHLFE, exit if not found. */ | |
3717 | snhlfe = snhlfe_find(slsp, gtype, gate, ifindex); | |
3718 | if (!snhlfe) | |
3719 | return 0; | |
3720 | ||
3721 | if (IS_ZEBRA_DEBUG_MPLS) { | |
3722 | char buf[BUFSIZ]; | |
3723 | snhlfe2str(snhlfe, buf, BUFSIZ); | |
3724 | zlog_debug("Del static LSP in-label %u nexthop %s", | |
3725 | in_label, buf); | |
3726 | } | |
3727 | ||
3728 | /* Uninstall LSP from the main table. */ | |
3729 | mpls_lsp_uninstall(zvrf, ZEBRA_LSP_STATIC, in_label, gtype, | |
3730 | gate, ifindex); | |
3731 | ||
3732 | /* Delete static LSP NHLFE */ | |
3733 | snhlfe_del(snhlfe); | |
3734 | } | |
3735 | ||
3736 | /* Remove entire static LSP entry if no NHLFE - valid in either case | |
3737 | * above. */ | |
ee70f629 | 3738 | if (snhlfe_list_first(&slsp->snhlfe_list) == NULL) { |
d62a17ae | 3739 | slsp = hash_release(slsp_table, &tmp_ile); |
0a22ddfb | 3740 | XFREE(MTYPE_SLSP, slsp); |
d62a17ae | 3741 | } |
3742 | ||
3743 | return 0; | |
7758e3f3 | 3744 | } |
3745 | ||
40c7bdb0 | 3746 | /* |
3747 | * Schedule all MPLS label forwarding entries for processing. | |
3748 | * Called upon changes that may affect one or more of them such as | |
3749 | * interface or nexthop state changes. | |
3750 | */ | |
d62a17ae | 3751 | void zebra_mpls_lsp_schedule(struct zebra_vrf *zvrf) |
40c7bdb0 | 3752 | { |
d62a17ae | 3753 | if (!zvrf) |
3754 | return; | |
3755 | hash_iterate(zvrf->lsp_table, lsp_schedule, NULL); | |
40c7bdb0 | 3756 | } |
3757 | ||
3ab18ff2 | 3758 | /* |
3759 | * Display MPLS label forwarding table for a specific LSP | |
3760 | * (VTY command handler). | |
3761 | */ | |
d62a17ae | 3762 | void zebra_mpls_print_lsp(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3763 | mpls_label_t label, bool use_json) |
3ab18ff2 | 3764 | { |
d62a17ae | 3765 | struct hash *lsp_table; |
3766 | zebra_lsp_t *lsp; | |
3767 | zebra_ile_t tmp_ile; | |
3768 | json_object *json = NULL; | |
3ab18ff2 | 3769 | |
d62a17ae | 3770 | /* Lookup table. */ |
3771 | lsp_table = zvrf->lsp_table; | |
3772 | if (!lsp_table) | |
3773 | return; | |
3ab18ff2 | 3774 | |
d62a17ae | 3775 | /* If entry is not present, exit. */ |
3776 | tmp_ile.in_label = label; | |
3777 | lsp = hash_lookup(lsp_table, &tmp_ile); | |
3778 | if (!lsp) | |
3779 | return; | |
3ab18ff2 | 3780 | |
d62a17ae | 3781 | if (use_json) { |
3782 | json = lsp_json(lsp); | |
9d303b37 DL |
3783 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3784 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3785 | json_object_free(json); |
3786 | } else | |
a29c2887 | 3787 | lsp_print(vty, lsp); |
3ab18ff2 | 3788 | } |
3789 | ||
3790 | /* | |
3791 | * Display MPLS label forwarding table (VTY command handler). | |
3792 | */ | |
d62a17ae | 3793 | void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf, |
9f049418 | 3794 | bool use_json) |
d62a17ae | 3795 | { |
3796 | char buf[BUFSIZ]; | |
3797 | json_object *json = NULL; | |
3798 | zebra_lsp_t *lsp = NULL; | |
3799 | zebra_nhlfe_t *nhlfe = NULL; | |
d62a17ae | 3800 | struct listnode *node = NULL; |
3801 | struct list *lsp_list = hash_get_sorted_list(zvrf->lsp_table, lsp_cmp); | |
3802 | ||
3803 | if (use_json) { | |
3804 | json = json_object_new_object(); | |
3805 | ||
3806 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) | |
3807 | json_object_object_add( | |
3808 | json, label2str(lsp->ile.in_label, buf, BUFSIZ), | |
3809 | lsp_json(lsp)); | |
3810 | ||
9d303b37 DL |
3811 | vty_out(vty, "%s\n", json_object_to_json_string_ext( |
3812 | json, JSON_C_TO_STRING_PRETTY)); | |
d62a17ae | 3813 | json_object_free(json); |
3814 | } else { | |
a971aeb6 RW |
3815 | struct ttable *tt; |
3816 | ||
3817 | /* Prepare table. */ | |
3818 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
3819 | ttable_add_row(tt, "Inbound Label|Type|Nexthop|Outbound Label"); | |
3820 | tt->style.cell.rpad = 2; | |
3821 | tt->style.corner = '+'; | |
3822 | ttable_restyle(tt); | |
3823 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
d62a17ae | 3824 | |
3825 | for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) { | |
ee70f629 | 3826 | frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) { |
a971aeb6 RW |
3827 | struct nexthop *nexthop; |
3828 | const char *out_label_str; | |
3829 | char nh_buf[NEXTHOP_STRLEN]; | |
3830 | ||
d62a17ae | 3831 | nexthop = nhlfe->nexthop; |
3832 | ||
3833 | switch (nexthop->type) { | |
996c9314 | 3834 | case NEXTHOP_TYPE_IFINDEX: { |
86f07f44 | 3835 | struct zebra_ns *zns; |
b9abd9ad DS |
3836 | struct interface *ifp; |
3837 | ||
86f07f44 PG |
3838 | zns = zebra_ns_lookup(NS_DEFAULT); |
3839 | ifp = if_lookup_by_index_per_ns( | |
a971aeb6 RW |
3840 | zns, nexthop->ifindex); |
3841 | snprintf(nh_buf, sizeof(nh_buf), "%s", | |
3842 | ifp ? ifp->name : "Null"); | |
b9abd9ad DS |
3843 | break; |
3844 | } | |
d62a17ae | 3845 | case NEXTHOP_TYPE_IPV4: |
3846 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
a971aeb6 RW |
3847 | inet_ntop(AF_INET, &nexthop->gate.ipv4, |
3848 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3849 | break; |
3850 | case NEXTHOP_TYPE_IPV6: | |
3851 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
a971aeb6 RW |
3852 | inet_ntop(AF_INET6, &nexthop->gate.ipv6, |
3853 | nh_buf, sizeof(nh_buf)); | |
d62a17ae | 3854 | break; |
3855 | default: | |
3856 | break; | |
3857 | } | |
3858 | ||
b9abd9ad | 3859 | if (nexthop->type != NEXTHOP_TYPE_IFINDEX) |
a971aeb6 RW |
3860 | out_label_str = mpls_label2str( |
3861 | nexthop->nh_label->num_labels, | |
3862 | &nexthop->nh_label->label[0], | |
3863 | buf, BUFSIZ, 1); | |
b9abd9ad | 3864 | else |
a971aeb6 RW |
3865 | out_label_str = "-"; |
3866 | ||
3867 | ttable_add_row(tt, "%u|%s|%s|%s", | |
3868 | lsp->ile.in_label, | |
3869 | nhlfe_type2str(nhlfe->type), | |
3870 | nh_buf, out_label_str); | |
d62a17ae | 3871 | } |
3872 | } | |
3873 | ||
a971aeb6 RW |
3874 | /* Dump the generated table. */ |
3875 | if (tt->nrows > 1) { | |
3876 | char *table = ttable_dump(tt, "\n"); | |
3877 | vty_out(vty, "%s\n", table); | |
3878 | XFREE(MTYPE_TMP, table); | |
3879 | } | |
3880 | ttable_del(tt); | |
d62a17ae | 3881 | } |
3882 | ||
6a154c88 | 3883 | list_delete(&lsp_list); |
3ab18ff2 | 3884 | } |
3885 | ||
7758e3f3 | 3886 | /* |
3887 | * Display MPLS LSP configuration of all static LSPs (VTY command handler). | |
3888 | */ | |
d62a17ae | 3889 | int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf) |
3890 | { | |
3891 | zebra_slsp_t *slsp; | |
3892 | zebra_snhlfe_t *snhlfe; | |
3893 | struct listnode *node; | |
3894 | struct list *slsp_list = | |
3895 | hash_get_sorted_list(zvrf->slsp_table, slsp_cmp); | |
3896 | ||
3897 | for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) { | |
ee70f629 | 3898 | frr_each(snhlfe_list, &slsp->snhlfe_list, snhlfe) { |
0af35d90 | 3899 | char buf[BUFSIZ]; |
d62a17ae | 3900 | char lstr[30]; |
3901 | ||
0af35d90 | 3902 | snhlfe2str(snhlfe, buf, sizeof(buf)); |
d62a17ae | 3903 | switch (snhlfe->out_label) { |
70e98a7f DS |
3904 | case MPLS_LABEL_IPV4_EXPLICIT_NULL: |
3905 | case MPLS_LABEL_IPV6_EXPLICIT_NULL: | |
d62a17ae | 3906 | strlcpy(lstr, "explicit-null", sizeof(lstr)); |
3907 | break; | |
70e98a7f | 3908 | case MPLS_LABEL_IMPLICIT_NULL: |
d62a17ae | 3909 | strlcpy(lstr, "implicit-null", sizeof(lstr)); |
3910 | break; | |
3911 | default: | |
772270f3 QY |
3912 | snprintf(lstr, sizeof(lstr), "%u", |
3913 | snhlfe->out_label); | |
d62a17ae | 3914 | break; |
3915 | } | |
3916 | ||
3917 | vty_out(vty, "mpls lsp %u %s %s\n", slsp->ile.in_label, | |
3918 | buf, lstr); | |
3919 | } | |
3920 | } | |
b78b820d | 3921 | |
6a154c88 | 3922 | list_delete(&slsp_list); |
d62a17ae | 3923 | return (zvrf->slsp_table->count ? 1 : 0); |
7758e3f3 | 3924 | } |
3925 | ||
1b6d5c7e VV |
3926 | /* |
3927 | * Add/update global label block. | |
3928 | */ | |
d7c0a89a QY |
3929 | int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, uint32_t start_label, |
3930 | uint32_t end_label) | |
1b6d5c7e | 3931 | { |
d62a17ae | 3932 | zvrf->mpls_srgb.start_label = start_label; |
3933 | zvrf->mpls_srgb.end_label = end_label; | |
28d58fd7 | 3934 | |
d62a17ae | 3935 | /* Evaluate registered FECs to see if any get a label or not. */ |
3936 | fec_evaluate(zvrf); | |
3937 | return 0; | |
1b6d5c7e VV |
3938 | } |
3939 | ||
3940 | /* | |
3941 | * Delete global label block. | |
3942 | */ | |
d62a17ae | 3943 | int zebra_mpls_label_block_del(struct zebra_vrf *zvrf) |
1b6d5c7e | 3944 | { |
d62a17ae | 3945 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; |
3946 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
28d58fd7 | 3947 | |
d62a17ae | 3948 | /* Process registered FECs to clear their local label, if needed. */ |
3949 | fec_evaluate(zvrf); | |
3950 | return 0; | |
1b6d5c7e VV |
3951 | } |
3952 | ||
3953 | /* | |
3954 | * Display MPLS global label block configuration (VTY command handler). | |
3955 | */ | |
d62a17ae | 3956 | int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *zvrf) |
1b6d5c7e | 3957 | { |
d62a17ae | 3958 | if (zvrf->mpls_srgb.start_label == 0) |
3959 | return 0; | |
1b6d5c7e | 3960 | |
d62a17ae | 3961 | if ((zvrf->mpls_srgb.start_label != MPLS_DEFAULT_MIN_SRGB_LABEL) |
3962 | || (zvrf->mpls_srgb.end_label != MPLS_DEFAULT_MAX_SRGB_LABEL)) { | |
3963 | vty_out(vty, "mpls label global-block %u %u\n", | |
3964 | zvrf->mpls_srgb.start_label, zvrf->mpls_srgb.end_label); | |
3965 | } | |
1b6d5c7e | 3966 | |
d62a17ae | 3967 | return 1; |
1b6d5c7e VV |
3968 | } |
3969 | ||
84915b0a | 3970 | /* |
3971 | * Called when VRF becomes inactive, cleans up information but keeps | |
3972 | * the table itself. | |
84915b0a | 3973 | */ |
3974 | void zebra_mpls_cleanup_tables(struct zebra_vrf *zvrf) | |
3975 | { | |
c2e10644 MS |
3976 | struct zebra_vrf *def_zvrf; |
3977 | afi_t afi; | |
3978 | ||
3979 | if (zvrf_id(zvrf) == VRF_DEFAULT) | |
3980 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); | |
3981 | else { | |
3982 | /* | |
3983 | * For other vrfs, we try to remove associated LSPs; we locate | |
3984 | * the LSPs in the default vrf. | |
3985 | */ | |
3986 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
3987 | ||
3988 | /* At shutdown, the default may be gone already */ | |
3989 | if (def_zvrf == NULL) | |
3990 | return; | |
3991 | ||
3992 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
3993 | if (zvrf->label[afi] != MPLS_LABEL_NONE) | |
3994 | lsp_uninstall(def_zvrf, zvrf->label[afi]); | |
3995 | } | |
3996 | } | |
84915b0a | 3997 | } |
3998 | ||
40c7bdb0 | 3999 | /* |
4000 | * Called upon process exiting, need to delete LSP forwarding | |
4001 | * entries from the kernel. | |
4002 | * NOTE: Currently supported only for default VRF. | |
4003 | */ | |
d62a17ae | 4004 | void zebra_mpls_close_tables(struct zebra_vrf *zvrf) |
40c7bdb0 | 4005 | { |
d62a17ae | 4006 | hash_iterate(zvrf->lsp_table, lsp_uninstall_from_kernel, NULL); |
4007 | hash_clean(zvrf->lsp_table, NULL); | |
4008 | hash_free(zvrf->lsp_table); | |
4009 | hash_clean(zvrf->slsp_table, NULL); | |
4010 | hash_free(zvrf->slsp_table); | |
9b67b514 DS |
4011 | route_table_finish(zvrf->fec_table[AFI_IP]); |
4012 | route_table_finish(zvrf->fec_table[AFI_IP6]); | |
40c7bdb0 | 4013 | } |
4014 | ||
7758e3f3 | 4015 | /* |
4016 | * Allocate MPLS tables for this VRF and do other initialization. | |
4017 | * NOTE: Currently supported only for default VRF. | |
4018 | */ | |
d62a17ae | 4019 | void zebra_mpls_init_tables(struct zebra_vrf *zvrf) |
7758e3f3 | 4020 | { |
d62a17ae | 4021 | if (!zvrf) |
4022 | return; | |
996c9314 LB |
4023 | zvrf->slsp_table = |
4024 | hash_create(label_hash, label_cmp, "ZEBRA SLSP table"); | |
4025 | zvrf->lsp_table = hash_create(label_hash, label_cmp, "ZEBRA LSP table"); | |
d62a17ae | 4026 | zvrf->fec_table[AFI_IP] = route_table_init(); |
4027 | zvrf->fec_table[AFI_IP6] = route_table_init(); | |
4028 | zvrf->mpls_flags = 0; | |
4029 | zvrf->mpls_srgb.start_label = MPLS_DEFAULT_MIN_SRGB_LABEL; | |
4030 | zvrf->mpls_srgb.end_label = MPLS_DEFAULT_MAX_SRGB_LABEL; | |
7758e3f3 | 4031 | } |
4032 | ||
4033 | /* | |
4034 | * Global MPLS initialization. | |
4035 | */ | |
d62a17ae | 4036 | void zebra_mpls_init(void) |
7758e3f3 | 4037 | { |
d62a17ae | 4038 | mpls_enabled = 0; |
33c32282 | 4039 | |
d62a17ae | 4040 | if (mpls_kernel_init() < 0) { |
e914ccbe | 4041 | flog_warn(EC_ZEBRA_MPLS_SUPPORT_DISABLED, |
9df414fe | 4042 | "Disabling MPLS support (no kernel support)"); |
d62a17ae | 4043 | return; |
4044 | } | |
fe6c7157 | 4045 | |
2561d12e | 4046 | if (!mpls_processq_init()) |
d62a17ae | 4047 | mpls_enabled = 1; |
453844ab | 4048 | |
21ccc0cf | 4049 | hook_register(zserv_client_close, zebra_mpls_cleanup_fecs_for_client); |
651105b5 | 4050 | hook_register(zserv_client_close, zebra_mpls_cleanup_zclient_labels); |
7758e3f3 | 4051 | } |