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bbe6ffd6 PG |
1 | /* |
2 | * BGP pbr | |
3 | * Copyright (C) 6WIND | |
4 | * | |
5 | * FRR is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2, or (at your option) any | |
8 | * later version. | |
9 | * | |
10 | * FRR is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | #include "zebra.h" | |
21 | #include "prefix.h" | |
22 | #include "zclient.h" | |
f3d32faa | 23 | #include "jhash.h" |
bbe6ffd6 | 24 | |
f3d32faa | 25 | #include "bgpd/bgpd.h" |
bbe6ffd6 | 26 | #include "bgpd/bgp_pbr.h" |
b46b6f1a | 27 | #include "bgpd/bgp_debug.h" |
45918cfb PG |
28 | #include "bgpd/bgp_flowspec_util.h" |
29 | #include "bgpd/bgp_ecommunity.h" | |
30 | #include "bgpd/bgp_route.h" | |
31 | #include "bgpd/bgp_attr.h" | |
d114b0d7 | 32 | #include "bgpd/bgp_zebra.h" |
529efa23 | 33 | #include "bgpd/bgp_mplsvpn.h" |
d114b0d7 PG |
34 | |
35 | DEFINE_MTYPE_STATIC(BGPD, PBR_MATCH_ENTRY, "PBR match entry") | |
36 | DEFINE_MTYPE_STATIC(BGPD, PBR_MATCH, "PBR match") | |
37 | DEFINE_MTYPE_STATIC(BGPD, PBR_ACTION, "PBR action") | |
38 | ||
39 | static int bgp_pbr_match_counter_unique; | |
40 | static int bgp_pbr_match_entry_counter_unique; | |
41 | static int bgp_pbr_action_counter_unique; | |
42 | static int bgp_pbr_match_iptable_counter_unique; | |
b46b6f1a | 43 | |
1815c6fc PG |
44 | struct bgp_pbr_match_iptable_unique { |
45 | uint32_t unique; | |
46 | struct bgp_pbr_match *bpm_found; | |
47 | }; | |
48 | ||
c5d429e1 PG |
49 | struct bgp_pbr_match_entry_unique { |
50 | uint32_t unique; | |
51 | struct bgp_pbr_match_entry *bpme_found; | |
52 | }; | |
53 | ||
70eabd12 PG |
54 | struct bgp_pbr_action_unique { |
55 | uint32_t unique; | |
56 | struct bgp_pbr_action *bpa_found; | |
57 | }; | |
58 | ||
59 | static int bgp_pbr_action_walkcb(struct hash_backet *backet, void *arg) | |
60 | { | |
61 | struct bgp_pbr_action *bpa = (struct bgp_pbr_action *)backet->data; | |
62 | struct bgp_pbr_action_unique *bpau = (struct bgp_pbr_action_unique *) | |
63 | arg; | |
64 | uint32_t unique = bpau->unique; | |
65 | ||
66 | if (bpa->unique == unique) { | |
67 | bpau->bpa_found = bpa; | |
68 | return HASHWALK_ABORT; | |
69 | } | |
70 | return HASHWALK_CONTINUE; | |
71 | } | |
72 | ||
c5d429e1 PG |
73 | static int bgp_pbr_match_entry_walkcb(struct hash_backet *backet, void *arg) |
74 | { | |
75 | struct bgp_pbr_match_entry *bpme = | |
76 | (struct bgp_pbr_match_entry *)backet->data; | |
77 | struct bgp_pbr_match_entry_unique *bpmeu = | |
78 | (struct bgp_pbr_match_entry_unique *)arg; | |
79 | uint32_t unique = bpmeu->unique; | |
80 | ||
81 | if (bpme->unique == unique) { | |
82 | bpmeu->bpme_found = bpme; | |
83 | return HASHWALK_ABORT; | |
84 | } | |
85 | return HASHWALK_CONTINUE; | |
86 | } | |
87 | ||
88 | struct bgp_pbr_match_ipsetname { | |
89 | char *ipsetname; | |
90 | struct bgp_pbr_match *bpm_found; | |
91 | }; | |
92 | ||
93 | static int bgp_pbr_match_pername_walkcb(struct hash_backet *backet, void *arg) | |
94 | { | |
95 | struct bgp_pbr_match *bpm = (struct bgp_pbr_match *)backet->data; | |
96 | struct bgp_pbr_match_ipsetname *bpmi = | |
97 | (struct bgp_pbr_match_ipsetname *)arg; | |
98 | char *ipset_name = bpmi->ipsetname; | |
99 | ||
100 | if (!strncmp(ipset_name, bpm->ipset_name, | |
101 | ZEBRA_IPSET_NAME_SIZE)) { | |
102 | bpmi->bpm_found = bpm; | |
103 | return HASHWALK_ABORT; | |
104 | } | |
105 | return HASHWALK_CONTINUE; | |
106 | } | |
107 | ||
1815c6fc PG |
108 | static int bgp_pbr_match_iptable_walkcb(struct hash_backet *backet, void *arg) |
109 | { | |
110 | struct bgp_pbr_match *bpm = (struct bgp_pbr_match *)backet->data; | |
111 | struct bgp_pbr_match_iptable_unique *bpmiu = | |
112 | (struct bgp_pbr_match_iptable_unique *)arg; | |
113 | uint32_t unique = bpmiu->unique; | |
114 | ||
115 | if (bpm->unique2 == unique) { | |
116 | bpmiu->bpm_found = bpm; | |
117 | return HASHWALK_ABORT; | |
118 | } | |
119 | return HASHWALK_CONTINUE; | |
120 | } | |
121 | ||
c5d429e1 PG |
122 | struct bgp_pbr_match_unique { |
123 | uint32_t unique; | |
124 | struct bgp_pbr_match *bpm_found; | |
125 | }; | |
126 | ||
127 | static int bgp_pbr_match_walkcb(struct hash_backet *backet, void *arg) | |
128 | { | |
129 | struct bgp_pbr_match *bpm = (struct bgp_pbr_match *)backet->data; | |
130 | struct bgp_pbr_match_unique *bpmu = (struct bgp_pbr_match_unique *) | |
131 | arg; | |
132 | uint32_t unique = bpmu->unique; | |
133 | ||
134 | if (bpm->unique == unique) { | |
135 | bpmu->bpm_found = bpm; | |
136 | return HASHWALK_ABORT; | |
137 | } | |
138 | return HASHWALK_CONTINUE; | |
139 | } | |
140 | ||
b46b6f1a PG |
141 | static int sprintf_bgp_pbr_match_val(char *str, struct bgp_pbr_match_val *mval, |
142 | const char *prepend) | |
143 | { | |
144 | char *ptr = str; | |
145 | ||
146 | if (prepend) | |
147 | ptr += sprintf(ptr, "%s", prepend); | |
148 | else { | |
149 | if (mval->unary_operator & OPERATOR_UNARY_OR) | |
150 | ptr += sprintf(ptr, ", or "); | |
151 | if (mval->unary_operator & OPERATOR_UNARY_AND) | |
152 | ptr += sprintf(ptr, ", and "); | |
153 | } | |
154 | if (mval->compare_operator & OPERATOR_COMPARE_LESS_THAN) | |
155 | ptr += sprintf(ptr, "<"); | |
156 | if (mval->compare_operator & OPERATOR_COMPARE_GREATER_THAN) | |
157 | ptr += sprintf(ptr, ">"); | |
158 | if (mval->compare_operator & OPERATOR_COMPARE_EQUAL_TO) | |
159 | ptr += sprintf(ptr, "="); | |
160 | if (mval->compare_operator & OPERATOR_COMPARE_EXACT_MATCH) | |
161 | ptr += sprintf(ptr, "match"); | |
162 | ptr += sprintf(ptr, " %u", mval->value); | |
163 | return (int)(ptr - str); | |
164 | } | |
165 | ||
166 | #define INCREMENT_DISPLAY(_ptr, _cnt) do { \ | |
167 | if (_cnt) \ | |
168 | (_ptr) += sprintf((_ptr), "; "); \ | |
169 | _cnt++; \ | |
170 | } while (0) | |
171 | ||
172 | /* return 1 if OK, 0 if validation should stop) */ | |
173 | static int bgp_pbr_validate_policy_route(struct bgp_pbr_entry_main *api) | |
174 | { | |
175 | /* because bgp pbr entry may contain unsupported | |
176 | * combinations, a message will be displayed here if | |
177 | * not supported. | |
178 | * for now, only match/set supported is | |
179 | * - combination src/dst => redirect nexthop [ + rate] | |
180 | * - combination src/dst => redirect VRF [ + rate] | |
181 | * - combination src/dst => drop | |
182 | */ | |
183 | if (api->match_src_port_num || api->match_dst_port_num | |
184 | || api->match_port_num || api->match_protocol_num | |
185 | || api->match_icmp_type_num || api->match_icmp_type_num | |
186 | || api->match_packet_length_num || api->match_dscp_num | |
187 | || api->match_tcpflags_num) { | |
188 | if (BGP_DEBUG(pbr, PBR)) | |
189 | bgp_pbr_print_policy_route(api); | |
190 | zlog_err("BGP: some SET actions not supported by Zebra. ignoring."); | |
191 | return 0; | |
192 | } | |
193 | if (!(api->match_bitmask & PREFIX_SRC_PRESENT) && | |
194 | !(api->match_bitmask & PREFIX_DST_PRESENT)) { | |
195 | if (BGP_DEBUG(pbr, PBR)) | |
196 | bgp_pbr_print_policy_route(api); | |
197 | zlog_err("BGP: SET actions without src or dst address can not operate. ignoring."); | |
198 | return 0; | |
199 | } | |
200 | return 1; | |
201 | } | |
bbe6ffd6 | 202 | |
45918cfb PG |
203 | /* return -1 if build or validation failed */ |
204 | static int bgp_pbr_build_and_validate_entry(struct prefix *p, | |
205 | struct bgp_info *info, | |
206 | struct bgp_pbr_entry_main *api) | |
207 | { | |
208 | int ret; | |
209 | int i, action_count = 0; | |
210 | struct ecommunity *ecom; | |
211 | struct ecommunity_val *ecom_eval; | |
212 | struct bgp_pbr_entry_action *api_action; | |
213 | struct prefix *src = NULL, *dst = NULL; | |
214 | int valid_prefix = 0; | |
215 | afi_t afi = AFI_IP; | |
216 | ||
217 | /* extract match from flowspec entries */ | |
218 | ret = bgp_flowspec_match_rules_fill((uint8_t *)p->u.prefix_flowspec.ptr, | |
219 | p->u.prefix_flowspec.prefixlen, api); | |
220 | if (ret < 0) | |
221 | return -1; | |
222 | /* extract actiosn from flowspec ecom list */ | |
223 | if (info && info->attr && info->attr->ecommunity) { | |
224 | ecom = info->attr->ecommunity; | |
225 | for (i = 0; i < ecom->size; i++) { | |
226 | ecom_eval = (struct ecommunity_val *) | |
227 | ecom->val + (i * ECOMMUNITY_SIZE); | |
228 | ||
229 | if (action_count > ACTIONS_MAX_NUM) { | |
230 | zlog_err("%s: flowspec actions exceeds limit (max %u)", | |
231 | __func__, action_count); | |
232 | break; | |
233 | } | |
234 | api_action = &api->actions[action_count]; | |
235 | ||
236 | if ((ecom_eval->val[1] == | |
237 | (char)ECOMMUNITY_REDIRECT_VRF) && | |
238 | (ecom_eval->val[0] == | |
239 | (char)ECOMMUNITY_ENCODE_TRANS_EXP || | |
240 | ecom_eval->val[0] == | |
241 | (char)ECOMMUNITY_EXTENDED_COMMUNITY_PART_2 || | |
242 | ecom_eval->val[0] == | |
243 | (char)ECOMMUNITY_EXTENDED_COMMUNITY_PART_3)) { | |
244 | struct ecommunity *eckey = ecommunity_new(); | |
245 | struct ecommunity_val ecom_copy; | |
246 | ||
247 | memcpy(&ecom_copy, ecom_eval, | |
248 | sizeof(struct ecommunity_val)); | |
249 | ecom_copy.val[0] &= | |
250 | ~ECOMMUNITY_ENCODE_TRANS_EXP; | |
251 | ecom_copy.val[1] = ECOMMUNITY_ROUTE_TARGET; | |
252 | ecommunity_add_val(eckey, &ecom_copy); | |
253 | ||
254 | api_action->action = ACTION_REDIRECT; | |
255 | api_action->u.redirect_vrf = | |
256 | get_first_vrf_for_redirect_with_rt( | |
257 | eckey); | |
258 | ecommunity_free(&eckey); | |
259 | } else if ((ecom_eval->val[0] == | |
260 | (char)ECOMMUNITY_ENCODE_REDIRECT_IP_NH) && | |
261 | (ecom_eval->val[1] == | |
262 | (char)ECOMMUNITY_REDIRECT_IP_NH)) { | |
263 | api_action->action = ACTION_REDIRECT_IP; | |
264 | api_action->u.zr.redirect_ip_v4.s_addr = | |
265 | info->attr->nexthop.s_addr; | |
266 | api_action->u.zr.duplicate = ecom_eval->val[7]; | |
267 | } else { | |
268 | if (ecom_eval->val[0] != | |
269 | (char)ECOMMUNITY_ENCODE_TRANS_EXP) | |
270 | continue; | |
271 | ret = ecommunity_fill_pbr_action(ecom_eval, | |
272 | api_action); | |
273 | if (ret != 0) | |
274 | continue; | |
275 | } | |
276 | api->action_num++; | |
277 | } | |
278 | } | |
279 | ||
280 | /* validate if incoming matc/action is compatible | |
281 | * with our policy routing engine | |
282 | */ | |
283 | if (!bgp_pbr_validate_policy_route(api)) | |
284 | return -1; | |
285 | ||
286 | /* check inconsistency in the match rule */ | |
287 | if (api->match_bitmask & PREFIX_SRC_PRESENT) { | |
288 | src = &api->src_prefix; | |
289 | afi = family2afi(src->family); | |
290 | valid_prefix = 1; | |
291 | } | |
292 | if (api->match_bitmask & PREFIX_DST_PRESENT) { | |
293 | dst = &api->dst_prefix; | |
294 | if (valid_prefix && afi != family2afi(dst->family)) { | |
295 | if (BGP_DEBUG(pbr, PBR)) | |
296 | bgp_pbr_print_policy_route(api); | |
297 | zlog_err("%s: inconsistency: no match for afi src and dst (%u/%u)", | |
298 | __func__, afi, family2afi(dst->family)); | |
299 | return -1; | |
300 | } | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
d114b0d7 PG |
305 | static void *bgp_pbr_match_alloc_intern(void *arg) |
306 | { | |
307 | struct bgp_pbr_match *bpm, *new; | |
308 | ||
309 | bpm = (struct bgp_pbr_match *)arg; | |
310 | ||
311 | new = XCALLOC(MTYPE_PBR_MATCH, sizeof(*new)); | |
312 | memcpy(new, bpm, sizeof(*bpm)); | |
313 | ||
314 | return new; | |
315 | } | |
316 | ||
317 | static void *bgp_pbr_action_alloc_intern(void *arg) | |
318 | { | |
319 | struct bgp_pbr_action *bpa, *new; | |
320 | ||
321 | bpa = (struct bgp_pbr_action *)arg; | |
322 | ||
323 | new = XCALLOC(MTYPE_PBR_ACTION, sizeof(*new)); | |
324 | ||
325 | memcpy(new, bpa, sizeof(*bpa)); | |
326 | ||
327 | return new; | |
328 | } | |
329 | ||
330 | static void *bgp_pbr_match_entry_alloc_intern(void *arg) | |
331 | { | |
332 | struct bgp_pbr_match_entry *bpme, *new; | |
333 | ||
334 | bpme = (struct bgp_pbr_match_entry *)arg; | |
335 | ||
336 | new = XCALLOC(MTYPE_PBR_MATCH_ENTRY, sizeof(*new)); | |
337 | ||
338 | memcpy(new, bpme, sizeof(*bpme)); | |
339 | ||
340 | return new; | |
341 | } | |
342 | ||
f3d32faa PG |
343 | uint32_t bgp_pbr_match_hash_key(void *arg) |
344 | { | |
345 | struct bgp_pbr_match *pbm = (struct bgp_pbr_match *)arg; | |
346 | uint32_t key; | |
347 | ||
348 | key = jhash_1word(pbm->vrf_id, 0x4312abde); | |
349 | key = jhash_1word(pbm->flags, key); | |
350 | return jhash_1word(pbm->type, key); | |
351 | } | |
352 | ||
353 | int bgp_pbr_match_hash_equal(const void *arg1, const void *arg2) | |
354 | { | |
355 | const struct bgp_pbr_match *r1, *r2; | |
356 | ||
357 | r1 = (const struct bgp_pbr_match *)arg1; | |
358 | r2 = (const struct bgp_pbr_match *)arg2; | |
359 | ||
360 | if (r1->vrf_id != r2->vrf_id) | |
361 | return 0; | |
362 | ||
363 | if (r1->type != r2->type) | |
364 | return 0; | |
365 | ||
366 | if (r1->flags != r2->flags) | |
367 | return 0; | |
368 | ||
369 | if (r1->action != r2->action) | |
370 | return 0; | |
371 | ||
372 | return 1; | |
373 | } | |
374 | ||
375 | uint32_t bgp_pbr_match_entry_hash_key(void *arg) | |
376 | { | |
377 | struct bgp_pbr_match_entry *pbme; | |
378 | uint32_t key; | |
379 | ||
380 | pbme = (struct bgp_pbr_match_entry *)arg; | |
381 | key = prefix_hash_key(&pbme->src); | |
382 | key = jhash_1word(prefix_hash_key(&pbme->dst), key); | |
383 | ||
384 | return key; | |
385 | } | |
386 | ||
387 | int bgp_pbr_match_entry_hash_equal(const void *arg1, const void *arg2) | |
388 | { | |
389 | const struct bgp_pbr_match_entry *r1, *r2; | |
390 | ||
391 | r1 = (const struct bgp_pbr_match_entry *)arg1; | |
392 | r2 = (const struct bgp_pbr_match_entry *)arg2; | |
393 | ||
394 | /* on updates, comparing | |
395 | * backpointer is not necessary | |
396 | */ | |
397 | ||
398 | /* unique value is self calculated | |
399 | */ | |
400 | ||
401 | /* rate is ignored for now | |
402 | */ | |
403 | ||
404 | if (!prefix_same(&r1->src, &r2->src)) | |
405 | return 0; | |
406 | ||
407 | if (!prefix_same(&r1->dst, &r2->dst)) | |
408 | return 0; | |
409 | ||
410 | return 1; | |
411 | } | |
412 | ||
413 | uint32_t bgp_pbr_action_hash_key(void *arg) | |
414 | { | |
415 | struct bgp_pbr_action *pbra; | |
416 | uint32_t key; | |
417 | ||
418 | pbra = (struct bgp_pbr_action *)arg; | |
419 | key = jhash_1word(pbra->table_id, 0x4312abde); | |
420 | key = jhash_1word(pbra->fwmark, key); | |
421 | return key; | |
422 | } | |
423 | ||
424 | int bgp_pbr_action_hash_equal(const void *arg1, const void *arg2) | |
425 | { | |
426 | const struct bgp_pbr_action *r1, *r2; | |
427 | ||
428 | r1 = (const struct bgp_pbr_action *)arg1; | |
429 | r2 = (const struct bgp_pbr_action *)arg2; | |
430 | ||
431 | /* unique value is self calculated | |
432 | * table and fwmark is self calculated | |
433 | */ | |
434 | if (r1->rate != r2->rate) | |
435 | return 0; | |
436 | ||
437 | if (r1->vrf_id != r2->vrf_id) | |
438 | return 0; | |
439 | ||
440 | if (memcmp(&r1->nh, &r2->nh, sizeof(struct nexthop))) | |
441 | return 0; | |
442 | return 1; | |
443 | } | |
bbe6ffd6 | 444 | |
70eabd12 PG |
445 | struct bgp_pbr_action *bgp_pbr_action_rule_lookup(vrf_id_t vrf_id, |
446 | uint32_t unique) | |
bbe6ffd6 | 447 | { |
70eabd12 PG |
448 | struct bgp *bgp = bgp_lookup_by_vrf_id(vrf_id); |
449 | struct bgp_pbr_action_unique bpau; | |
450 | ||
451 | if (!bgp || unique == 0) | |
452 | return NULL; | |
453 | bpau.unique = unique; | |
454 | bpau.bpa_found = NULL; | |
455 | hash_walk(bgp->pbr_action_hash, bgp_pbr_action_walkcb, &bpau); | |
456 | return bpau.bpa_found; | |
bbe6ffd6 PG |
457 | } |
458 | ||
459 | struct bgp_pbr_match *bgp_pbr_match_ipset_lookup(vrf_id_t vrf_id, | |
460 | uint32_t unique) | |
461 | { | |
c5d429e1 PG |
462 | struct bgp *bgp = bgp_lookup_by_vrf_id(vrf_id); |
463 | struct bgp_pbr_match_unique bpmu; | |
464 | ||
465 | if (!bgp || unique == 0) | |
466 | return NULL; | |
467 | bpmu.unique = unique; | |
468 | bpmu.bpm_found = NULL; | |
469 | hash_walk(bgp->pbr_match_hash, bgp_pbr_match_walkcb, &bpmu); | |
470 | return bpmu.bpm_found; | |
bbe6ffd6 PG |
471 | } |
472 | ||
473 | struct bgp_pbr_match_entry *bgp_pbr_match_ipset_entry_lookup(vrf_id_t vrf_id, | |
474 | char *ipset_name, | |
475 | uint32_t unique) | |
476 | { | |
c5d429e1 PG |
477 | struct bgp *bgp = bgp_lookup_by_vrf_id(vrf_id); |
478 | struct bgp_pbr_match_entry_unique bpmeu; | |
479 | struct bgp_pbr_match_ipsetname bpmi; | |
480 | ||
481 | if (!bgp || unique == 0) | |
482 | return NULL; | |
483 | bpmi.ipsetname = XCALLOC(MTYPE_TMP, ZEBRA_IPSET_NAME_SIZE); | |
484 | snprintf(bpmi.ipsetname, ZEBRA_IPSET_NAME_SIZE, "%s", ipset_name); | |
485 | bpmi.bpm_found = NULL; | |
486 | hash_walk(bgp->pbr_match_hash, bgp_pbr_match_pername_walkcb, &bpmi); | |
487 | XFREE(MTYPE_TMP, bpmi.ipsetname); | |
488 | if (!bpmi.bpm_found) | |
489 | return NULL; | |
490 | bpmeu.bpme_found = NULL; | |
491 | bpmeu.unique = unique; | |
492 | hash_walk(bpmi.bpm_found->entry_hash, | |
493 | bgp_pbr_match_entry_walkcb, &bpmeu); | |
494 | return bpmeu.bpme_found; | |
bbe6ffd6 PG |
495 | } |
496 | ||
1815c6fc PG |
497 | struct bgp_pbr_match *bgp_pbr_match_iptable_lookup(vrf_id_t vrf_id, |
498 | uint32_t unique) | |
499 | { | |
500 | struct bgp *bgp = bgp_lookup_by_vrf_id(vrf_id); | |
501 | struct bgp_pbr_match_iptable_unique bpmiu; | |
502 | ||
503 | if (!bgp || unique == 0) | |
504 | return NULL; | |
505 | bpmiu.unique = unique; | |
506 | bpmiu.bpm_found = NULL; | |
507 | hash_walk(bgp->pbr_match_hash, bgp_pbr_match_iptable_walkcb, &bpmiu); | |
508 | return bpmiu.bpm_found; | |
509 | } | |
510 | ||
f3d32faa PG |
511 | void bgp_pbr_init(struct bgp *bgp) |
512 | { | |
513 | bgp->pbr_match_hash = | |
514 | hash_create_size(8, bgp_pbr_match_hash_key, | |
515 | bgp_pbr_match_hash_equal, | |
516 | "Match Hash"); | |
517 | bgp->pbr_action_hash = | |
518 | hash_create_size(8, bgp_pbr_action_hash_key, | |
519 | bgp_pbr_action_hash_equal, | |
520 | "Match Hash Entry"); | |
521 | } | |
b46b6f1a PG |
522 | |
523 | void bgp_pbr_print_policy_route(struct bgp_pbr_entry_main *api) | |
524 | { | |
525 | int i = 0; | |
526 | char return_string[512]; | |
527 | char *ptr = return_string; | |
528 | char buff[64]; | |
529 | int nb_items = 0; | |
530 | ||
531 | ptr += sprintf(ptr, "MATCH : "); | |
532 | if (api->match_bitmask & PREFIX_SRC_PRESENT) { | |
533 | struct prefix *p = &(api->src_prefix); | |
534 | ||
535 | ptr += sprintf(ptr, "@src %s", prefix2str(p, buff, 64)); | |
536 | INCREMENT_DISPLAY(ptr, nb_items); | |
537 | } | |
538 | if (api->match_bitmask & PREFIX_DST_PRESENT) { | |
539 | struct prefix *p = &(api->dst_prefix); | |
540 | ||
541 | INCREMENT_DISPLAY(ptr, nb_items); | |
542 | ptr += sprintf(ptr, "@dst %s", prefix2str(p, buff, 64)); | |
543 | } | |
544 | ||
545 | if (api->match_protocol_num) | |
546 | INCREMENT_DISPLAY(ptr, nb_items); | |
547 | for (i = 0; i < api->match_protocol_num; i++) | |
548 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->protocol[i], | |
549 | i > 0 ? NULL : "@proto "); | |
550 | ||
551 | if (api->match_src_port_num) | |
552 | INCREMENT_DISPLAY(ptr, nb_items); | |
553 | for (i = 0; i < api->match_src_port_num; i++) | |
554 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->src_port[i], | |
555 | i > 0 ? NULL : "@srcport "); | |
556 | ||
557 | if (api->match_dst_port_num) | |
558 | INCREMENT_DISPLAY(ptr, nb_items); | |
559 | for (i = 0; i < api->match_dst_port_num; i++) | |
560 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->dst_port[i], | |
561 | i > 0 ? NULL : "@dstport "); | |
562 | ||
563 | if (api->match_port_num) | |
564 | INCREMENT_DISPLAY(ptr, nb_items); | |
565 | for (i = 0; i < api->match_port_num; i++) | |
566 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->port[i], | |
567 | i > 0 ? NULL : "@port "); | |
568 | ||
569 | if (api->match_icmp_type_num) | |
570 | INCREMENT_DISPLAY(ptr, nb_items); | |
571 | for (i = 0; i < api->match_icmp_type_num; i++) | |
572 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->icmp_type[i], | |
573 | i > 0 ? NULL : "@icmptype "); | |
574 | ||
575 | if (api->match_icmp_code_num) | |
576 | INCREMENT_DISPLAY(ptr, nb_items); | |
577 | for (i = 0; i < api->match_icmp_code_num; i++) | |
578 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->icmp_code[i], | |
579 | i > 0 ? NULL : "@icmpcode "); | |
580 | ||
581 | if (api->match_packet_length_num) | |
582 | INCREMENT_DISPLAY(ptr, nb_items); | |
583 | for (i = 0; i < api->match_packet_length_num; i++) | |
584 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->packet_length[i], | |
585 | i > 0 ? NULL : "@plen "); | |
586 | ||
587 | if (api->match_dscp_num) | |
588 | INCREMENT_DISPLAY(ptr, nb_items); | |
589 | for (i = 0; i < api->match_dscp_num; i++) | |
590 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->dscp[i], | |
591 | i > 0 ? NULL : "@dscp "); | |
592 | ||
593 | if (api->match_tcpflags_num) | |
594 | INCREMENT_DISPLAY(ptr, nb_items); | |
595 | for (i = 0; i < api->match_tcpflags_num; i++) | |
596 | ptr += sprintf_bgp_pbr_match_val(ptr, &api->tcpflags[i], | |
597 | i > 0 ? NULL : "@tcpflags "); | |
598 | ||
599 | if (api->match_bitmask & FRAGMENT_PRESENT) { | |
600 | INCREMENT_DISPLAY(ptr, nb_items); | |
601 | ptr += sprintf(ptr, "@fragment %u", api->fragment.bitmask); | |
602 | } | |
603 | if (!nb_items) | |
604 | ptr = return_string; | |
605 | else | |
606 | ptr += sprintf(ptr, "; "); | |
607 | if (api->action_num) | |
608 | ptr += sprintf(ptr, "SET : "); | |
609 | nb_items = 0; | |
610 | for (i = 0; i < api->action_num; i++) { | |
611 | switch (api->actions[i].action) { | |
612 | case ACTION_TRAFFICRATE: | |
613 | INCREMENT_DISPLAY(ptr, nb_items); | |
614 | ptr += sprintf(ptr, "@set rate %f", | |
615 | api->actions[i].u.r.rate); | |
616 | break; | |
617 | case ACTION_TRAFFIC_ACTION: | |
618 | INCREMENT_DISPLAY(ptr, nb_items); | |
619 | ptr += sprintf(ptr, "@action "); | |
620 | if (api->actions[i].u.za.filter | |
621 | & TRAFFIC_ACTION_TERMINATE) | |
622 | ptr += sprintf(ptr, | |
623 | " terminate (apply filter(s))"); | |
624 | if (api->actions[i].u.za.filter | |
625 | & TRAFFIC_ACTION_DISTRIBUTE) | |
626 | ptr += sprintf(ptr, " distribute"); | |
627 | if (api->actions[i].u.za.filter | |
628 | & TRAFFIC_ACTION_SAMPLE) | |
629 | ptr += sprintf(ptr, " sample"); | |
630 | break; | |
631 | case ACTION_REDIRECT_IP: | |
632 | INCREMENT_DISPLAY(ptr, nb_items); | |
633 | char local_buff[INET_ADDRSTRLEN]; | |
634 | ||
635 | if (inet_ntop(AF_INET, | |
636 | &api->actions[i].u.zr.redirect_ip_v4, | |
637 | local_buff, INET_ADDRSTRLEN) != NULL) | |
638 | ptr += sprintf(ptr, | |
639 | "@redirect ip nh %s", local_buff); | |
640 | break; | |
641 | case ACTION_REDIRECT: | |
642 | INCREMENT_DISPLAY(ptr, nb_items); | |
643 | ptr += sprintf(ptr, "@redirect vrf %u", | |
644 | api->actions[i].u.redirect_vrf); | |
645 | break; | |
646 | case ACTION_MARKING: | |
647 | INCREMENT_DISPLAY(ptr, nb_items); | |
648 | ptr += sprintf(ptr, "@set dscp %u", | |
649 | api->actions[i].u.marking_dscp); | |
650 | break; | |
651 | default: | |
652 | break; | |
653 | } | |
654 | } | |
655 | zlog_info("%s", return_string); | |
656 | } | |
45918cfb | 657 | |
d114b0d7 PG |
658 | static void bgp_pbr_flush_entry(struct bgp *bgp, struct bgp_pbr_action *bpa, |
659 | struct bgp_pbr_match *bpm, | |
660 | struct bgp_pbr_match_entry *bpme) | |
661 | { | |
662 | /* if bpme is null, bpm is also null | |
663 | */ | |
664 | if (bpme == NULL) | |
665 | return; | |
666 | /* ipset del entry */ | |
667 | if (bpme->installed) { | |
668 | bgp_send_pbr_ipset_entry_match(bpme, false); | |
669 | bpme->installed = false; | |
670 | bpme->backpointer = NULL; | |
671 | } | |
672 | hash_release(bpm->entry_hash, bpme); | |
673 | if (hashcount(bpm->entry_hash) == 0) { | |
674 | /* delete iptable entry first */ | |
675 | /* then delete ipset match */ | |
676 | if (bpm->installed) { | |
677 | if (bpm->installed_in_iptable) { | |
678 | bgp_send_pbr_iptable(bpm->action, | |
679 | bpm, false); | |
680 | bpm->installed_in_iptable = false; | |
681 | } | |
682 | bgp_send_pbr_ipset_match(bpm, false); | |
683 | bpm->installed = false; | |
684 | bpm->action = NULL; | |
685 | } | |
686 | hash_release(bgp->pbr_match_hash, bpm); | |
687 | /* XXX release pbr_match_action if not used | |
688 | * note that drop does not need to call send_pbr_action | |
689 | */ | |
690 | } | |
691 | } | |
692 | ||
693 | struct bgp_pbr_match_entry_remain { | |
694 | struct bgp_pbr_match_entry *bpme_to_match; | |
695 | struct bgp_pbr_match_entry *bpme_found; | |
696 | }; | |
697 | ||
698 | static int bgp_pbr_get_remaining_entry(struct hash_backet *backet, void *arg) | |
699 | { | |
700 | struct bgp_pbr_match *bpm = (struct bgp_pbr_match *)backet->data; | |
701 | struct bgp_pbr_match_entry_remain *bpmer = | |
702 | (struct bgp_pbr_match_entry_remain *)arg; | |
703 | struct bgp_pbr_match *bpm_temp; | |
704 | struct bgp_pbr_match_entry *bpme = bpmer->bpme_to_match; | |
705 | ||
706 | if (!bpme->backpointer || | |
707 | bpm == bpme->backpointer || | |
708 | bpme->backpointer->action == bpm->action) | |
709 | return HASHWALK_CONTINUE; | |
710 | /* ensure bpm other characteristics are equal */ | |
711 | bpm_temp = bpme->backpointer; | |
712 | if (bpm_temp->vrf_id != bpm->vrf_id || | |
713 | bpm_temp->type != bpm->type || | |
714 | bpm_temp->flags != bpm->flags) | |
715 | return HASHWALK_CONTINUE; | |
716 | ||
717 | /* look for remaining bpme */ | |
718 | bpmer->bpme_found = hash_lookup(bpm->entry_hash, bpme); | |
719 | if (!bpmer->bpme_found) | |
720 | return HASHWALK_CONTINUE; | |
721 | return HASHWALK_ABORT; | |
722 | } | |
723 | ||
724 | static void bgp_pbr_policyroute_remove_from_zebra(struct bgp *bgp, | |
725 | struct bgp_info *binfo, | |
726 | vrf_id_t vrf_id, | |
727 | struct prefix *src, | |
728 | struct prefix *dst) | |
729 | { | |
730 | struct bgp_pbr_match temp; | |
731 | struct bgp_pbr_match_entry temp2; | |
732 | struct bgp_pbr_match *bpm; | |
733 | struct bgp_pbr_match_entry *bpme; | |
734 | struct bgp_pbr_match_entry_remain bpmer; | |
735 | ||
736 | /* as we don't know information from EC | |
737 | * look for bpm that have the bpm | |
738 | * with vrf_id characteristics | |
739 | */ | |
740 | memset(&temp2, 0, sizeof(temp2)); | |
741 | memset(&temp, 0, sizeof(temp)); | |
742 | if (src) { | |
743 | temp.flags |= MATCH_IP_SRC_SET; | |
744 | prefix_copy(&temp2.src, src); | |
745 | } else | |
746 | temp2.src.family = AF_INET; | |
747 | if (dst) { | |
748 | temp.flags |= MATCH_IP_DST_SET; | |
749 | prefix_copy(&temp2.dst, dst); | |
750 | } else | |
751 | temp2.dst.family = AF_INET; | |
752 | ||
753 | if (src == NULL || dst == NULL) | |
754 | temp.type = IPSET_NET; | |
755 | else | |
756 | temp.type = IPSET_NET_NET; | |
757 | if (vrf_id == VRF_UNKNOWN) /* XXX case BGP destroy */ | |
758 | temp.vrf_id = 0; | |
759 | else | |
760 | temp.vrf_id = vrf_id; | |
761 | bpme = &temp2; | |
762 | bpm = &temp; | |
763 | bpme->backpointer = bpm; | |
764 | /* right now, a previous entry may already exist | |
765 | * flush previous entry if necessary | |
766 | */ | |
767 | bpmer.bpme_to_match = bpme; | |
768 | bpmer.bpme_found = NULL; | |
769 | hash_walk(bgp->pbr_match_hash, bgp_pbr_get_remaining_entry, &bpmer); | |
770 | if (bpmer.bpme_found) { | |
771 | static struct bgp_pbr_match *local_bpm; | |
772 | static struct bgp_pbr_action *local_bpa; | |
773 | ||
774 | local_bpm = bpmer.bpme_found->backpointer; | |
775 | local_bpa = local_bpm->action; | |
776 | bgp_pbr_flush_entry(bgp, local_bpa, | |
777 | local_bpm, bpmer.bpme_found); | |
778 | } | |
779 | } | |
780 | ||
781 | static void bgp_pbr_policyroute_add_to_zebra(struct bgp *bgp, | |
782 | struct bgp_info *binfo, | |
783 | vrf_id_t vrf_id, | |
784 | struct prefix *src, | |
785 | struct prefix *dst, | |
786 | struct nexthop *nh, | |
787 | float *rate) | |
788 | { | |
789 | struct bgp_pbr_match temp; | |
790 | struct bgp_pbr_match_entry temp2; | |
791 | struct bgp_pbr_match *bpm; | |
792 | struct bgp_pbr_match_entry *bpme = NULL; | |
793 | struct bgp_pbr_action temp3; | |
794 | struct bgp_pbr_action *bpa = NULL; | |
795 | struct bgp_pbr_match_entry_remain bpmer; | |
796 | ||
797 | /* look for bpa first */ | |
798 | memset(&temp3, 0, sizeof(temp3)); | |
799 | if (rate) | |
800 | temp3.rate = *rate; | |
801 | if (nh) | |
802 | memcpy(&temp3.nh, nh, sizeof(struct nexthop)); | |
803 | temp3.vrf_id = vrf_id; | |
804 | bpa = hash_get(bgp->pbr_action_hash, &temp3, | |
805 | bgp_pbr_action_alloc_intern); | |
806 | ||
807 | if (bpa->fwmark == 0) { | |
d114b0d7 PG |
808 | /* drop is handled by iptable */ |
809 | if (nh && nh->type == NEXTHOP_TYPE_BLACKHOLE) { | |
810 | bpa->table_id = 0; | |
811 | bpa->installed = true; | |
812 | } else { | |
31c28cd7 PG |
813 | bpa->fwmark = bgp_zebra_tm_get_id(); |
814 | bpa->table_id = bpa->fwmark; | |
d114b0d7 PG |
815 | bpa->installed = false; |
816 | } | |
817 | bpa->unique = ++bgp_pbr_action_counter_unique; | |
818 | /* 0 value is forbidden */ | |
819 | bpa->install_in_progress = false; | |
820 | } | |
821 | ||
822 | /* then look for bpm */ | |
823 | memset(&temp, 0, sizeof(temp)); | |
824 | if (src == NULL || dst == NULL) | |
825 | temp.type = IPSET_NET; | |
826 | else | |
827 | temp.type = IPSET_NET_NET; | |
828 | temp.vrf_id = vrf_id; | |
829 | if (src) | |
830 | temp.flags |= MATCH_IP_SRC_SET; | |
831 | if (dst) | |
832 | temp.flags |= MATCH_IP_DST_SET; | |
833 | temp.action = bpa; | |
834 | bpm = hash_get(bgp->pbr_match_hash, &temp, | |
835 | bgp_pbr_match_alloc_intern); | |
836 | ||
837 | /* new, then self allocate ipset_name and unique */ | |
838 | if (bpm && bpm->unique == 0) { | |
839 | bpm->unique = ++bgp_pbr_match_counter_unique; | |
840 | /* 0 value is forbidden */ | |
841 | sprintf(bpm->ipset_name, "match%p", bpm); | |
842 | bpm->entry_hash = hash_create_size(8, | |
843 | bgp_pbr_match_entry_hash_key, | |
844 | bgp_pbr_match_entry_hash_equal, | |
845 | "Match Entry Hash"); | |
846 | bpm->installed = false; | |
847 | ||
848 | /* unique2 should be updated too */ | |
849 | bpm->unique2 = ++bgp_pbr_match_iptable_counter_unique; | |
850 | bpm->installed_in_iptable = false; | |
851 | bpm->install_in_progress = false; | |
852 | bpm->install_iptable_in_progress = false; | |
853 | } | |
854 | ||
855 | memset(&temp2, 0, sizeof(temp2)); | |
856 | if (src) | |
857 | prefix_copy(&temp2.src, src); | |
858 | else | |
859 | temp2.src.family = AF_INET; | |
860 | if (dst) | |
861 | prefix_copy(&temp2.dst, dst); | |
862 | else | |
863 | temp2.dst.family = AF_INET; | |
864 | if (bpm) | |
865 | bpme = hash_get(bpm->entry_hash, &temp2, | |
866 | bgp_pbr_match_entry_alloc_intern); | |
867 | if (bpme && bpme->unique == 0) { | |
868 | bpme->unique = ++bgp_pbr_match_entry_counter_unique; | |
869 | /* 0 value is forbidden */ | |
870 | bpme->backpointer = bpm; | |
871 | bpme->installed = false; | |
872 | bpme->install_in_progress = false; | |
873 | } | |
874 | ||
875 | /* BGP FS: append entry to zebra | |
876 | * - policies are not routing entries and as such | |
877 | * route replace semantics don't necessarily follow | |
878 | * through to policy entries | |
879 | * - because of that, not all policing information will be stored | |
880 | * into zebra. and non selected policies will be suppressed from zebra | |
881 | * - as consequence, in order to bring consistency | |
882 | * a policy will be added, then ifan ecmp policy exists, | |
883 | * it will be suppressed subsequently | |
884 | */ | |
885 | /* ip rule add */ | |
f7df1907 | 886 | if (!bpa->installed) { |
d114b0d7 | 887 | bgp_send_pbr_rule_action(bpa, true); |
f7df1907 PG |
888 | bgp_zebra_announce_default(bgp, nh, |
889 | AFI_IP, bpa->table_id, true); | |
890 | } | |
d114b0d7 PG |
891 | |
892 | /* ipset create */ | |
893 | if (bpm && !bpm->installed) | |
894 | bgp_send_pbr_ipset_match(bpm, true); | |
895 | /* ipset add */ | |
896 | if (bpme && !bpme->installed) | |
897 | bgp_send_pbr_ipset_entry_match(bpme, true); | |
898 | ||
899 | /* iptables */ | |
900 | if (bpm && !bpm->installed_in_iptable) | |
901 | bgp_send_pbr_iptable(bpa, bpm, true); | |
902 | ||
903 | /* A previous entry may already exist | |
904 | * flush previous entry if necessary | |
905 | */ | |
906 | bpmer.bpme_to_match = bpme; | |
907 | bpmer.bpme_found = NULL; | |
908 | hash_walk(bgp->pbr_match_hash, bgp_pbr_get_remaining_entry, &bpmer); | |
909 | if (bpmer.bpme_found) { | |
910 | static struct bgp_pbr_match *local_bpm; | |
911 | static struct bgp_pbr_action *local_bpa; | |
912 | ||
913 | local_bpm = bpmer.bpme_found->backpointer; | |
914 | local_bpa = local_bpm->action; | |
915 | bgp_pbr_flush_entry(bgp, local_bpa, | |
916 | local_bpm, bpmer.bpme_found); | |
917 | } | |
918 | ||
919 | ||
920 | } | |
921 | ||
922 | static void bgp_pbr_handle_entry(struct bgp *bgp, | |
923 | struct bgp_info *binfo, | |
924 | struct bgp_pbr_entry_main *api, | |
925 | bool add) | |
926 | { | |
927 | struct nexthop nh; | |
928 | int i = 0; | |
929 | int continue_loop = 1; | |
930 | float rate = 0; | |
931 | struct prefix *src = NULL, *dst = NULL; | |
932 | ||
933 | if (api->match_bitmask & PREFIX_SRC_PRESENT) | |
934 | src = &api->src_prefix; | |
935 | if (api->match_bitmask & PREFIX_DST_PRESENT) | |
936 | dst = &api->dst_prefix; | |
937 | memset(&nh, 0, sizeof(struct nexthop)); | |
938 | nh.vrf_id = VRF_UNKNOWN; | |
939 | ||
940 | if (!add) | |
941 | return bgp_pbr_policyroute_remove_from_zebra(bgp, binfo, | |
942 | api->vrf_id, src, dst); | |
943 | /* no action for add = true */ | |
944 | for (i = 0; i < api->action_num; i++) { | |
945 | switch (api->actions[i].action) { | |
946 | case ACTION_TRAFFICRATE: | |
947 | /* drop packet */ | |
948 | if (api->actions[i].u.r.rate == 0) { | |
949 | nh.vrf_id = api->vrf_id; | |
950 | nh.type = NEXTHOP_TYPE_BLACKHOLE; | |
951 | bgp_pbr_policyroute_add_to_zebra(bgp, binfo, | |
952 | api->vrf_id, src, dst, | |
953 | &nh, &rate); | |
954 | } else { | |
955 | /* update rate. can be reentrant */ | |
956 | rate = api->actions[i].u.r.rate; | |
957 | if (BGP_DEBUG(pbr, PBR)) | |
958 | bgp_pbr_print_policy_route(api); | |
959 | zlog_warn("PBR: ignoring Set action rate %f", | |
960 | api->actions[i].u.r.rate); | |
961 | } | |
962 | break; | |
963 | case ACTION_TRAFFIC_ACTION: | |
964 | if (api->actions[i].u.za.filter | |
965 | & TRAFFIC_ACTION_SAMPLE) { | |
966 | if (BGP_DEBUG(pbr, PBR)) | |
967 | bgp_pbr_print_policy_route(api); | |
968 | zlog_warn("PBR: Sample action Ignored"); | |
969 | } | |
970 | #if 0 | |
971 | if (api->actions[i].u.za.filter | |
972 | & TRAFFIC_ACTION_DISTRIBUTE) { | |
973 | if (BGP_DEBUG(pbr, PBR)) | |
974 | bgp_pbr_print_policy_route(api); | |
975 | zlog_warn("PBR: Distribute action Applies"); | |
976 | continue_loop = 0; | |
977 | /* continue forwarding entry as before | |
978 | * no action | |
979 | */ | |
980 | } | |
981 | #endif /* XXX to confirm behaviour of traffic action. for now , ignore */ | |
982 | /* terminate action: run other filters | |
983 | */ | |
984 | break; | |
985 | case ACTION_REDIRECT_IP: | |
986 | nh.type = NEXTHOP_TYPE_IPV4; | |
987 | nh.gate.ipv4.s_addr = | |
988 | api->actions[i].u.zr.redirect_ip_v4.s_addr; | |
989 | nh.vrf_id = api->vrf_id; | |
990 | bgp_pbr_policyroute_add_to_zebra(bgp, binfo, | |
991 | api->vrf_id, | |
992 | src, dst, | |
993 | &nh, &rate); | |
994 | /* XXX combination with REDIRECT_VRF | |
995 | * + REDIRECT_NH_IP not done | |
996 | */ | |
997 | continue_loop = 0; | |
998 | break; | |
999 | case ACTION_REDIRECT: | |
1000 | nh.vrf_id = api->actions[i].u.redirect_vrf; | |
1001 | nh.type = NEXTHOP_TYPE_IPV4; | |
1002 | bgp_pbr_policyroute_add_to_zebra(bgp, binfo, | |
1003 | api->vrf_id, | |
1004 | src, dst, | |
1005 | &nh, &rate); | |
1006 | continue_loop = 0; | |
1007 | break; | |
1008 | case ACTION_MARKING: | |
1009 | if (BGP_DEBUG(pbr, PBR)) | |
1010 | bgp_pbr_print_policy_route(api); | |
1011 | zlog_warn("PBR: Set DSCP %u Ignored", | |
1012 | api->actions[i].u.marking_dscp); | |
1013 | break; | |
1014 | default: | |
1015 | break; | |
1016 | } | |
1017 | if (continue_loop == 0) | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | ||
45918cfb PG |
1022 | void bgp_pbr_update_entry(struct bgp *bgp, struct prefix *p, |
1023 | struct bgp_info *info, afi_t afi, safi_t safi, | |
1024 | bool nlri_update) | |
1025 | { | |
1026 | struct bgp_pbr_entry_main api; | |
1027 | ||
1028 | if (afi == AFI_IP6) | |
1029 | return; /* IPv6 not supported */ | |
1030 | if (safi != SAFI_FLOWSPEC) | |
1031 | return; /* not supported */ | |
1032 | /* Make Zebra API structure. */ | |
1033 | memset(&api, 0, sizeof(api)); | |
1034 | api.vrf_id = bgp->vrf_id; | |
1035 | api.afi = afi; | |
1036 | ||
1037 | if (bgp_pbr_build_and_validate_entry(p, info, &api) < 0) { | |
1038 | zlog_err("%s: cancel updating entry in bgp pbr", | |
1039 | __func__); | |
1040 | return; | |
1041 | } | |
d114b0d7 | 1042 | bgp_pbr_handle_entry(bgp, info, &api, nlri_update); |
45918cfb | 1043 | } |