]>
Commit | Line | Data |
---|---|---|
185fb14a AK |
1 | /* EVPN Multihoming procedures |
2 | * | |
3 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
c44ab6f1 | 4 | * Anuradha Karuppiah |
185fb14a AK |
5 | * |
6 | * This file is part of FRR. | |
7 | * | |
8 | * FRRouting is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * FRRouting is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include "command.h" | |
23 | #include "filter.h" | |
24 | #include "prefix.h" | |
25 | #include "log.h" | |
26 | #include "memory.h" | |
27 | #include "stream.h" | |
28 | #include "hash.h" | |
29 | #include "jhash.h" | |
30 | #include "zclient.h" | |
31 | ||
23d0a753 DA |
32 | #include "lib/printfrr.h" |
33 | ||
185fb14a AK |
34 | #include "bgpd/bgp_attr_evpn.h" |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
40 | #include "bgpd/bgp_evpn.h" | |
41 | #include "bgpd/bgp_evpn_private.h" | |
42 | #include "bgpd/bgp_evpn_mh.h" | |
43 | #include "bgpd/bgp_ecommunity.h" | |
44 | #include "bgpd/bgp_encap_types.h" | |
45 | #include "bgpd/bgp_debug.h" | |
46 | #include "bgpd/bgp_errors.h" | |
47 | #include "bgpd/bgp_aspath.h" | |
48 | #include "bgpd/bgp_zebra.h" | |
49 | #include "bgpd/bgp_addpath.h" | |
c44ab6f1 | 50 | #include "bgpd/bgp_label.h" |
c589d847 | 51 | #include "bgpd/bgp_nht.h" |
6348981a | 52 | #include "bgpd/bgp_mpath.h" |
c44ab6f1 AK |
53 | |
54 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
55 | struct bgp_evpn_es *es); | |
56 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
57 | struct bgp_evpn_es *es); | |
58 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
59 | struct bgp_evpn_es *es, |
60 | struct in_addr vtep_ip, | |
61 | bool esr, uint8_t df_alg, | |
62 | uint16_t df_pref); | |
c44ab6f1 AK |
63 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, |
64 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr); | |
65 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es); | |
66 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es); | |
67 | static void bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi); | |
c589d847 AK |
68 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es); |
69 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es); | |
26c03e43 AK |
70 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi); |
71 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller); | |
c44ab6f1 AK |
72 | |
73 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
8fc2ffb3 | 74 | static int bgp_evpn_run_consistency_checks(struct thread *t); |
c44ab6f1 AK |
75 | |
76 | /****************************************************************************** | |
77 | * per-ES (Ethernet Segment) routing table | |
78 | * | |
79 | * Following routes are added to the ES's routing table - | |
80 | * 1. Local and remote ESR (Type-4) | |
81 | * 2. Local EAD-per-ES (Type-1). | |
82 | * | |
83 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
84 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
85 | * being added to same ES). | |
86 | * | |
87 | * Note the following routes go into the VNI routing table (instead of the | |
88 | * ES routing table) - | |
89 | * 1. Remote EAD-per-ES | |
90 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 91 | */ |
185fb14a | 92 | |
c44ab6f1 AK |
93 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
94 | * installed in the ES's routing table. | |
185fb14a | 95 | */ |
c44ab6f1 | 96 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
97 | struct bgp_evpn_es *es, |
98 | struct bgp_dest *dest) | |
185fb14a AK |
99 | { |
100 | int ret = 0; | |
101 | afi_t afi = AFI_L2VPN; | |
102 | safi_t safi = SAFI_EVPN; | |
103 | struct bgp_path_info *old_select; /* old best */ | |
104 | struct bgp_path_info *new_select; /* new best */ | |
105 | struct bgp_path_info_pair old_and_new; | |
106 | ||
107 | /* Compute the best path. */ | |
09319b4e DS |
108 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
109 | afi, safi); | |
185fb14a AK |
110 | old_select = old_and_new.old; |
111 | new_select = old_and_new.new; | |
112 | ||
113 | /* | |
114 | * If the best path hasn't changed - see if something needs to be | |
115 | * updated | |
116 | */ | |
117 | if (old_select && old_select == new_select | |
09319b4e DS |
118 | && old_select->type == ZEBRA_ROUTE_BGP |
119 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
120 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
121 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
122 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 123 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
124 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
125 | true /*esr*/, | |
126 | old_select->attr->df_alg, | |
127 | old_select->attr->df_pref); | |
185fb14a AK |
128 | } |
129 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 130 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
131 | return ret; |
132 | } | |
133 | ||
134 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 135 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 136 | |
c44ab6f1 | 137 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
138 | * into the zebra RIB. |
139 | */ | |
140 | if (old_select || new_select) | |
09319b4e | 141 | bgp_bump_version(dest); |
185fb14a AK |
142 | |
143 | if (old_select) | |
09319b4e | 144 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 145 | if (new_select) { |
09319b4e DS |
146 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
147 | bgp_path_info_unset_flag(dest, new_select, | |
148 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
149 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
150 | } | |
151 | ||
152 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 153 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
154 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
155 | true /*esr */, new_select->attr->df_alg, | |
156 | new_select->attr->df_pref); | |
185fb14a AK |
157 | } else { |
158 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
159 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
160 | bgp_evpn_es_vtep_del( | |
161 | bgp, es, old_select->attr->nexthop, | |
162 | true /*esr*/); | |
185fb14a AK |
163 | } |
164 | ||
165 | /* Clear any route change flags. */ | |
09319b4e | 166 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
167 | |
168 | /* Reap old select bgp_path_info, if it has been removed */ | |
169 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 170 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
171 | |
172 | return ret; | |
173 | } | |
174 | ||
c44ab6f1 AK |
175 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
176 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
177 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
178 | struct bgp_path_info *parent_pi) | |
179 | { | |
180 | int ret = 0; | |
09319b4e | 181 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
182 | struct bgp_path_info *pi = NULL; |
183 | struct attr *attr_new = NULL; | |
184 | ||
185 | /* Create (or fetch) route within the VNI. | |
186 | * NOTE: There is no RD here. | |
187 | */ | |
09319b4e | 188 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
189 | |
190 | /* Check if route entry is already present. */ | |
09319b4e | 191 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
192 | if (pi->extra |
193 | && (struct bgp_path_info *)pi->extra->parent == | |
194 | parent_pi) | |
195 | break; | |
196 | ||
197 | if (!pi) { | |
198 | /* Add (or update) attribute to hash. */ | |
199 | attr_new = bgp_attr_intern(parent_pi->attr); | |
200 | ||
201 | /* Create new route with its attribute. */ | |
202 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 203 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
204 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
205 | bgp_path_info_extra_get(pi); | |
206 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
207 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
208 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
209 | } else { |
210 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
211 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 212 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
213 | return 0; |
214 | } | |
215 | /* The attribute has changed. */ | |
216 | /* Add (or update) attribute to hash. */ | |
217 | attr_new = bgp_attr_intern(parent_pi->attr); | |
218 | ||
219 | /* Restore route, if needed. */ | |
220 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 221 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
222 | |
223 | /* Mark if nexthop has changed. */ | |
224 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
225 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
226 | ||
227 | /* Unintern existing, set to new. */ | |
228 | bgp_attr_unintern(&pi->attr); | |
229 | pi->attr = attr_new; | |
230 | pi->uptime = bgp_clock(); | |
231 | } | |
232 | ||
233 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 234 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 235 | |
09319b4e | 236 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
237 | |
238 | return ret; | |
239 | } | |
240 | ||
241 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
242 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
243 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
244 | { | |
245 | int ret; | |
09319b4e | 246 | struct bgp_dest *dest; |
c44ab6f1 AK |
247 | struct bgp_path_info *pi; |
248 | ||
249 | if (!es->route_table) | |
250 | return 0; | |
251 | ||
252 | /* Locate route within the ESI. | |
253 | * NOTE: There is no RD here. | |
254 | */ | |
09319b4e DS |
255 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
256 | if (!dest) | |
c44ab6f1 AK |
257 | return 0; |
258 | ||
259 | /* Find matching route entry. */ | |
09319b4e | 260 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
261 | if (pi->extra |
262 | && (struct bgp_path_info *)pi->extra->parent == | |
263 | parent_pi) | |
264 | break; | |
265 | ||
266 | if (!pi) | |
267 | return 0; | |
268 | ||
269 | /* Mark entry for deletion */ | |
09319b4e | 270 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
271 | |
272 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 273 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
274 | |
275 | /* Unlock route node. */ | |
09319b4e | 276 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
277 | |
278 | return ret; | |
279 | } | |
280 | ||
281 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
282 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
283 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
284 | struct bgp_path_info *pi, int install) | |
285 | { | |
286 | int ret = 0; | |
287 | ||
288 | if (install) | |
289 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
290 | else | |
291 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
292 | ||
293 | if (ret) { | |
294 | flog_err( | |
295 | EC_BGP_EVPN_FAIL, | |
296 | "%u: Failed to %s EVPN %s route in ESI %s", | |
297 | bgp->vrf_id, | |
298 | install ? "install" : "uninstall", | |
299 | "ES", es->esi_str); | |
300 | return ret; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
305 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
306 | * Also remove all remote routes from the per ES table. Invoked when ES | |
307 | * is deleted. | |
185fb14a | 308 | */ |
c44ab6f1 AK |
309 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
310 | { | |
09319b4e | 311 | struct bgp_dest *dest; |
c44ab6f1 AK |
312 | struct bgp_path_info *pi, *nextpi; |
313 | ||
314 | /* de-activate the ES */ | |
315 | bgp_evpn_local_es_down(bgp, es); | |
316 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
317 | ||
318 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
319 | for (dest = bgp_table_top(es->route_table); dest; |
320 | dest = bgp_route_next(dest)) { | |
321 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
322 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
323 | bgp_path_info_delete(dest, pi); | |
324 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
325 | } |
326 | } | |
327 | } | |
328 | ||
329 | /***************************************************************************** | |
330 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
331 | * segment updates. | |
332 | */ | |
333 | ||
334 | /* create or update local EVPN type1/type4 route entry. | |
335 | * | |
336 | * This could be in - | |
337 | * the ES table if ESR/EAD-ES (or) | |
338 | * the VNI table if EAD-EVI (or) | |
339 | * the global table if ESR/EAD-ES/EAD-EVI | |
340 | * | |
341 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
342 | * ESR). | |
343 | */ | |
09319b4e DS |
344 | static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
345 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
346 | struct bgp_dest *dest, struct attr *attr, | |
347 | int add, struct bgp_path_info **ri, | |
348 | int *route_changed) | |
185fb14a | 349 | { |
185fb14a AK |
350 | struct bgp_path_info *tmp_pi = NULL; |
351 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
352 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
353 | struct attr *attr_new = NULL; | |
c44ab6f1 | 354 | struct prefix_evpn *evp; |
185fb14a AK |
355 | |
356 | *ri = NULL; | |
752eed47 | 357 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 358 | *route_changed = 1; |
185fb14a AK |
359 | |
360 | /* locate the local and remote entries if any */ | |
09319b4e | 361 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
362 | tmp_pi = tmp_pi->next) { |
363 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
364 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
365 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
366 | local_pi = tmp_pi; |
367 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
368 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
369 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
370 | remote_pi = tmp_pi; |
371 | } | |
372 | ||
c44ab6f1 AK |
373 | /* we don't expect to see a remote_ri at this point as |
374 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
375 | * in the VNI-rt-table. | |
185fb14a AK |
376 | */ |
377 | if (remote_pi) { | |
378 | flog_err( | |
23d0a753 DA |
379 | EC_BGP_ES_INVALID, |
380 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
381 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a AK |
382 | return -1; |
383 | } | |
384 | ||
385 | if (!local_pi && !add) | |
386 | return 0; | |
387 | ||
388 | /* create or update the entry */ | |
389 | if (!local_pi) { | |
390 | ||
391 | /* Add or update attribute to hash */ | |
392 | attr_new = bgp_attr_intern(attr); | |
393 | ||
394 | /* Create new route with its attribute. */ | |
395 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 396 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
397 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
398 | ||
c44ab6f1 AK |
399 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
400 | bgp_path_info_extra_get(tmp_pi); | |
401 | tmp_pi->extra->num_labels = 1; | |
402 | if (vpn) | |
403 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
404 | else | |
405 | tmp_pi->extra->label[0] = 0; | |
406 | } | |
407 | ||
185fb14a | 408 | /* add the newly created path to the route-node */ |
09319b4e | 409 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
410 | } else { |
411 | tmp_pi = local_pi; | |
412 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 413 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
414 | *route_changed = 0; |
415 | else { | |
416 | /* The attribute has changed. | |
417 | * Add (or update) attribute to hash. | |
418 | */ | |
419 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
420 | bgp_path_info_set_flag(dest, tmp_pi, |
421 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
422 | |
423 | /* Restore route, if needed. */ | |
424 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 425 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
426 | |
427 | /* Unintern existing, set to new. */ | |
428 | bgp_attr_unintern(&tmp_pi->attr); | |
429 | tmp_pi->attr = attr_new; | |
430 | tmp_pi->uptime = bgp_clock(); | |
431 | } | |
432 | } | |
433 | ||
c44ab6f1 AK |
434 | if (*route_changed) { |
435 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
436 | zlog_debug( |
437 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
438 | es->esi_str, vpn ? vpn->vni : 0, | |
439 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
440 | ? "esr" | |
441 | : (vpn ? "ead-evi" : "ead-es"), | |
442 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
443 | } |
444 | ||
185fb14a AK |
445 | /* Return back the route entry. */ |
446 | *ri = tmp_pi; | |
447 | return 0; | |
448 | } | |
449 | ||
c44ab6f1 AK |
450 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
451 | * | |
452 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
453 | * ESR). | |
454 | */ | |
455 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
456 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 457 | { |
185fb14a AK |
458 | afi_t afi = AFI_L2VPN; |
459 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 460 | struct bgp_path_info *pi; |
09319b4e DS |
461 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
462 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
463 | struct bgp_table *rt_table; |
464 | struct prefix_rd *prd; | |
185fb14a | 465 | |
c44ab6f1 AK |
466 | if (vpn) { |
467 | rt_table = vpn->route_table; | |
468 | prd = &vpn->prd; | |
469 | } else { | |
470 | rt_table = es->route_table; | |
471 | prd = &es->prd; | |
472 | } | |
185fb14a | 473 | |
c44ab6f1 AK |
474 | /* First, locate the route node within the ESI or VNI. |
475 | * If it doesn't exist, ther is nothing to do. | |
476 | * Note: there is no RD here. | |
477 | */ | |
09319b4e DS |
478 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
479 | if (!dest) | |
c44ab6f1 | 480 | return 0; |
185fb14a | 481 | |
c44ab6f1 | 482 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
483 | zlog_debug( |
484 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
485 | es->esi_str, vpn ? vpn->vni : 0, | |
486 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
487 | ? "esr" | |
488 | : (vpn ? "ead-evi" : "ead-es"), | |
489 | &es->originator_ip); | |
185fb14a | 490 | |
c44ab6f1 AK |
491 | /* Next, locate route node in the global EVPN routing table. |
492 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
493 | */ | |
09319b4e DS |
494 | global_dest = |
495 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
496 | (const struct prefix_evpn *)p, prd); | |
497 | if (global_dest) { | |
185fb14a | 498 | |
c44ab6f1 | 499 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 500 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
501 | |
502 | /* Schedule for processing - withdraws to peers happen from | |
503 | * this table. | |
504 | */ | |
505 | if (pi) | |
09319b4e DS |
506 | bgp_process(bgp, global_dest, afi, safi); |
507 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
508 | } |
509 | ||
510 | /* | |
c44ab6f1 | 511 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
512 | * This can just be removed. |
513 | */ | |
09319b4e | 514 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 515 | if (pi) |
09319b4e DS |
516 | bgp_path_info_reap(dest, pi); |
517 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
518 | return 0; |
519 | } | |
520 | ||
c44ab6f1 AK |
521 | /***************************************************************************** |
522 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
523 | * ESRs are used for DF election. Currently service-carving described in |
524 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
525 | * used by default. | |
526 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 527 | */ |
c44ab6f1 AK |
528 | /* Build extended community for EVPN ES (type-4) route */ |
529 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
530 | struct attr *attr) | |
185fb14a | 531 | { |
c44ab6f1 AK |
532 | struct ecommunity ecom_encap; |
533 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 534 | struct ecommunity ecom_df; |
c44ab6f1 AK |
535 | struct ecommunity_val eval; |
536 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 537 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
538 | bgp_encap_types tnl_type; |
539 | struct ethaddr mac; | |
185fb14a | 540 | |
c44ab6f1 AK |
541 | /* Encap */ |
542 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
543 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
544 | encode_encap_extcomm(tnl_type, &eval); | |
545 | ecom_encap.size = 1; | |
34540b0d | 546 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
547 | ecom_encap.val = (uint8_t *)eval.val; |
548 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 549 | |
c44ab6f1 AK |
550 | /* ES import RT */ |
551 | memset(&mac, 0, sizeof(struct ethaddr)); | |
552 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
553 | es_get_system_mac(&es->esi, &mac); | |
554 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
555 | ecom_es_rt.size = 1; | |
34540b0d | 556 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
557 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
558 | attr->ecommunity = | |
559 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 560 | |
74e2bd89 AK |
561 | /* DF election extended community */ |
562 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
563 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
564 | ecom_df.size = 1; | |
565 | ecom_df.val = (uint8_t *)eval_df.val; | |
566 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
567 | ||
c44ab6f1 | 568 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
569 | } |
570 | ||
c44ab6f1 AK |
571 | /* Create or update local type-4 route */ |
572 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
573 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
574 | { |
575 | int ret = 0; | |
c44ab6f1 AK |
576 | int route_changed = 0; |
577 | afi_t afi = AFI_L2VPN; | |
578 | safi_t safi = SAFI_EVPN; | |
579 | struct attr attr; | |
580 | struct attr *attr_new = NULL; | |
09319b4e | 581 | struct bgp_dest *dest = NULL; |
185fb14a | 582 | struct bgp_path_info *pi = NULL; |
185fb14a | 583 | |
c44ab6f1 AK |
584 | memset(&attr, 0, sizeof(struct attr)); |
585 | ||
586 | /* Build path-attribute for this route. */ | |
587 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
588 | attr.nexthop = es->originator_ip; | |
589 | attr.mp_nexthop_global_in = es->originator_ip; | |
590 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
591 | ||
592 | /* Set up extended community. */ | |
593 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
594 | ||
595 | /* First, create (or fetch) route node within the ESI. */ | |
596 | /* NOTE: There is no RD here. */ | |
09319b4e | 597 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 598 | |
c44ab6f1 | 599 | /* Create or update route entry. */ |
09319b4e DS |
600 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
601 | &pi, &route_changed); | |
ec779825 | 602 | if (ret != 0) |
23d0a753 DA |
603 | flog_err( |
604 | EC_BGP_ES_INVALID, | |
605 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
606 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 607 | |
c44ab6f1 AK |
608 | assert(pi); |
609 | attr_new = pi->attr; | |
185fb14a | 610 | |
c44ab6f1 AK |
611 | /* Perform route selection; |
612 | * this is just to set the flags correctly | |
613 | * as local route in the ES always wins. | |
614 | */ | |
09319b4e DS |
615 | bgp_evpn_es_route_select_install(bgp, es, dest); |
616 | bgp_dest_unlock_node(dest); | |
185fb14a | 617 | |
c44ab6f1 AK |
618 | /* If this is a new route or some attribute has changed, export the |
619 | * route to the global table. The route will be advertised to peers | |
620 | * from there. Note that this table is a 2-level tree (RD-level + | |
621 | * Prefix-level) similar to L3VPN routes. | |
622 | */ | |
623 | if (route_changed) { | |
624 | struct bgp_path_info *global_pi; | |
185fb14a | 625 | |
09319b4e DS |
626 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
627 | p, &es->prd); | |
628 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
629 | attr_new, 1, &global_pi, | |
630 | &route_changed); | |
185fb14a | 631 | |
c44ab6f1 | 632 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
633 | bgp_process(bgp, dest, afi, safi); |
634 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
635 | } |
636 | ||
c44ab6f1 AK |
637 | /* Unintern temporary. */ |
638 | aspath_unintern(&attr.aspath); | |
639 | return 0; | |
185fb14a AK |
640 | } |
641 | ||
c44ab6f1 AK |
642 | /* Delete local type-4 route */ |
643 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
644 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 645 | { |
c44ab6f1 AK |
646 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
647 | } | |
185fb14a | 648 | |
c44ab6f1 AK |
649 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
650 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
651 | struct attr *attr, uint8_t *pfx, int psize, | |
652 | uint32_t addpath_id) | |
653 | { | |
654 | int ret; | |
655 | esi_t esi; | |
656 | uint8_t ipaddr_len; | |
657 | struct in_addr vtep_ip; | |
658 | struct prefix_rd prd; | |
659 | struct prefix_evpn p; | |
185fb14a | 660 | |
c44ab6f1 AK |
661 | /* Type-4 route should be either 23 or 35 bytes |
662 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 663 | */ |
c44ab6f1 AK |
664 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
665 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
666 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
667 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
668 | peer->bgp->vrf_id, peer->host, psize); | |
669 | return -1; | |
670 | } | |
185fb14a | 671 | |
c44ab6f1 AK |
672 | /* Make prefix_rd */ |
673 | prd.family = AF_UNSPEC; | |
674 | prd.prefixlen = 64; | |
675 | memcpy(&prd.val, pfx, RD_BYTES); | |
676 | pfx += RD_BYTES; | |
185fb14a | 677 | |
c44ab6f1 AK |
678 | /* get the ESI */ |
679 | memcpy(&esi, pfx, ESI_BYTES); | |
680 | pfx += ESI_BYTES; | |
185fb14a | 681 | |
185fb14a | 682 | |
c44ab6f1 AK |
683 | /* Get the IP. */ |
684 | ipaddr_len = *pfx++; | |
685 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
686 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
687 | } else { | |
688 | flog_err( | |
689 | EC_BGP_EVPN_ROUTE_INVALID, | |
690 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
691 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
692 | return -1; | |
693 | } | |
185fb14a | 694 | |
c44ab6f1 AK |
695 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
696 | /* Process the route. */ | |
697 | if (attr) { | |
698 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
699 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
700 | &prd, NULL, 0, 0, NULL); | |
701 | } else { | |
702 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
703 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
704 | &prd, NULL, 0, NULL); | |
705 | } | |
185fb14a AK |
706 | return ret; |
707 | } | |
708 | ||
c44ab6f1 AK |
709 | /* Check if a prefix belongs to the local ES */ |
710 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
711 | struct bgp_evpn_es *es) | |
185fb14a | 712 | { |
c44ab6f1 AK |
713 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
714 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
715 | } |
716 | ||
c44ab6f1 AK |
717 | /* Import remote ESRs on local ethernet segment add */ |
718 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
719 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
720 | { |
721 | int ret; | |
722 | afi_t afi; | |
723 | safi_t safi; | |
09319b4e | 724 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
725 | struct bgp_table *table; |
726 | struct bgp_path_info *pi; | |
727 | ||
728 | afi = AFI_L2VPN; | |
729 | safi = SAFI_EVPN; | |
730 | ||
c44ab6f1 AK |
731 | /* Walk entire global routing table and evaluate routes which could be |
732 | * imported into this Ethernet Segment. | |
185fb14a | 733 | */ |
09319b4e DS |
734 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
735 | rd_dest = bgp_route_next(rd_dest)) { | |
736 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
737 | if (!table) |
738 | continue; | |
739 | ||
09319b4e DS |
740 | for (dest = bgp_table_top(table); dest; |
741 | dest = bgp_route_next(dest)) { | |
742 | struct prefix_evpn *evp = | |
752eed47 | 743 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 744 | |
09319b4e DS |
745 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
746 | pi = pi->next) { | |
185fb14a AK |
747 | /* |
748 | * Consider "valid" remote routes applicable for | |
749 | * this ES. | |
750 | */ | |
751 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
752 | && pi->type == ZEBRA_ROUTE_BGP |
753 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
754 | continue; |
755 | ||
c44ab6f1 | 756 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
757 | continue; |
758 | ||
759 | if (install) | |
c44ab6f1 AK |
760 | ret = bgp_evpn_es_route_install( |
761 | bgp, es, evp, pi); | |
185fb14a | 762 | else |
c44ab6f1 AK |
763 | ret = bgp_evpn_es_route_uninstall( |
764 | bgp, es, evp, pi); | |
185fb14a AK |
765 | |
766 | if (ret) { | |
767 | flog_err( | |
2dbe669b DA |
768 | EC_BGP_EVPN_FAIL, |
769 | "Failed to %s EVPN %pFX route in ESI %s", | |
770 | install ? "install" | |
185fb14a | 771 | : "uninstall", |
2dbe669b | 772 | evp, es->esi_str); |
dc52bece DS |
773 | |
774 | bgp_dest_unlock_node(rd_dest); | |
775 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
776 | return ret; |
777 | } | |
778 | } | |
779 | } | |
780 | } | |
781 | return 0; | |
782 | } | |
783 | ||
c44ab6f1 AK |
784 | /***************************************************************************** |
785 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
786 | * There are two types of EAD routes - | |
787 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
788 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 789 | */ |
185fb14a | 790 | |
c44ab6f1 AK |
791 | /* Extended communities associated with EAD-per-ES */ |
792 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
793 | struct attr *attr) | |
185fb14a | 794 | { |
c44ab6f1 AK |
795 | struct ecommunity ecom_encap; |
796 | struct ecommunity ecom_esi_label; | |
797 | struct ecommunity_val eval; | |
798 | struct ecommunity_val eval_esi_label; | |
799 | bgp_encap_types tnl_type; | |
800 | struct listnode *evi_node, *rt_node; | |
801 | struct ecommunity *ecom; | |
802 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 803 | |
c44ab6f1 AK |
804 | /* Encap */ |
805 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
806 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
807 | encode_encap_extcomm(tnl_type, &eval); | |
808 | ecom_encap.size = 1; | |
34540b0d | 809 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
810 | ecom_encap.val = (uint8_t *)eval.val; |
811 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 812 | |
c44ab6f1 AK |
813 | /* ESI label */ |
814 | encode_esi_label_extcomm(&eval_esi_label, | |
815 | false /*single_active*/); | |
816 | ecom_esi_label.size = 1; | |
34540b0d | 817 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
818 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
819 | attr->ecommunity = | |
820 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
821 | ||
822 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
823 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
824 | * with it. | |
825 | */ | |
826 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
827 | evi_node, es_evi)) { | |
828 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
829 | continue; | |
830 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
831 | rt_node, ecom)) | |
832 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
833 | ecom); | |
834 | } | |
835 | ||
836 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
837 | } | |
838 | ||
839 | /* Extended communities associated with EAD-per-EVI */ | |
840 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
841 | struct bgpevpn *vpn, struct attr *attr) | |
842 | { | |
843 | struct ecommunity ecom_encap; | |
844 | struct ecommunity_val eval; | |
845 | bgp_encap_types tnl_type; | |
846 | struct listnode *rt_node; | |
847 | struct ecommunity *ecom; | |
848 | ||
849 | /* Encap */ | |
850 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
851 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
852 | encode_encap_extcomm(tnl_type, &eval); | |
853 | ecom_encap.size = 1; | |
7659ad68 | 854 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
855 | ecom_encap.val = (uint8_t *)eval.val; |
856 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
857 | ||
858 | /* Add export RTs for the L2-VNI */ | |
859 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
860 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
861 | ||
862 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
863 | } | |
864 | ||
865 | /* Update EVPN EAD (type-1) route - | |
866 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
867 | */ | |
868 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
869 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
870 | struct prefix_evpn *p) | |
871 | { | |
872 | int ret = 0; | |
873 | afi_t afi = AFI_L2VPN; | |
874 | safi_t safi = SAFI_EVPN; | |
875 | struct attr attr; | |
876 | struct attr *attr_new = NULL; | |
09319b4e | 877 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
878 | struct bgp_path_info *pi = NULL; |
879 | int route_changed = 0; | |
880 | struct prefix_rd *global_rd; | |
881 | ||
882 | memset(&attr, 0, sizeof(struct attr)); | |
883 | ||
884 | /* Build path-attribute for this route. */ | |
885 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
886 | attr.nexthop = es->originator_ip; | |
887 | attr.mp_nexthop_global_in = es->originator_ip; | |
888 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
889 | ||
890 | if (vpn) { | |
891 | /* EAD-EVI route update */ | |
892 | /* MPLS label */ | |
893 | vni2label(vpn->vni, &(attr.label)); | |
894 | ||
895 | /* Set up extended community */ | |
896 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
897 | ||
898 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 899 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
900 | |
901 | /* Create or update route entry. */ | |
09319b4e DS |
902 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
903 | &attr, 1, &pi, &route_changed); | |
ec779825 | 904 | if (ret != 0) |
23d0a753 DA |
905 | flog_err( |
906 | EC_BGP_ES_INVALID, | |
907 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
908 | bgp->vrf_id, es->esi_str, vpn->vni, | |
909 | &es->originator_ip); | |
c44ab6f1 AK |
910 | global_rd = &vpn->prd; |
911 | } else { | |
912 | /* EAD-ES route update */ | |
913 | /* MPLS label is 0 for EAD-ES route */ | |
914 | ||
915 | /* Set up extended community */ | |
916 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
917 | ||
918 | /* First, create (or fetch) route node within the ES. */ | |
919 | /* NOTE: There is no RD here. */ | |
920 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 921 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
922 | |
923 | /* Create or update route entry. */ | |
09319b4e DS |
924 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
925 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 926 | if (ret != 0) { |
23d0a753 DA |
927 | flog_err( |
928 | EC_BGP_ES_INVALID, | |
929 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
930 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
931 | } |
932 | global_rd = &es->prd; | |
933 | } | |
934 | ||
935 | ||
936 | assert(pi); | |
937 | attr_new = pi->attr; | |
938 | ||
939 | /* Perform route selection; | |
940 | * this is just to set the flags correctly as local route in | |
941 | * the ES always wins. | |
942 | */ | |
09319b4e DS |
943 | evpn_route_select_install(bgp, vpn, dest); |
944 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
945 | |
946 | /* If this is a new route or some attribute has changed, export the | |
947 | * route to the global table. The route will be advertised to peers | |
948 | * from there. Note that this table is a 2-level tree (RD-level + | |
949 | * Prefix-level) similar to L3VPN routes. | |
950 | */ | |
951 | if (route_changed) { | |
952 | struct bgp_path_info *global_pi; | |
953 | ||
09319b4e DS |
954 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
955 | p, global_rd); | |
956 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
957 | attr_new, 1, &global_pi, | |
958 | &route_changed); | |
c44ab6f1 AK |
959 | |
960 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
961 | bgp_process(bgp, dest, afi, safi); |
962 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
963 | } |
964 | ||
965 | /* Unintern temporary. */ | |
966 | aspath_unintern(&attr.aspath); | |
967 | return 0; | |
968 | } | |
969 | ||
9c49ac74 AD |
970 | /* |
971 | * This function is called when the export RT for a VNI changes. | |
972 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
973 | * table and advertise these routes to peers. | |
974 | */ | |
975 | ||
976 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
977 | { | |
978 | struct prefix_evpn p; | |
979 | struct bgp_evpn_es *es; | |
980 | struct bgp_evpn_es_evi *es_evi; | |
981 | struct bgp_evpn_es_evi *es_evi_next; | |
982 | ||
983 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
984 | &vpn->es_evi_rb_tree, es_evi_next) { | |
985 | es = es_evi->es; | |
986 | ||
987 | /* Update EAD-ES */ | |
988 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
989 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
990 | &es->esi, es->originator_ip); | |
991 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
992 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
993 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
994 | bgp->vrf_id, es->esi_str, | |
995 | es_evi->vpn->vni); | |
996 | } | |
997 | ||
998 | /* Update EAD-EVI */ | |
999 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1000 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1001 | &es->esi, es->originator_ip); | |
1002 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1003 | &p)) | |
1004 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1005 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1006 | bgp->vrf_id, es->esi_str, | |
1007 | es_evi->vpn->vni); | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | ||
c44ab6f1 AK |
1012 | /* Delete local Type-1 route */ |
1013 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1014 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1015 | { | |
1016 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1017 | } | |
1018 | ||
1019 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1020 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1021 | struct prefix_evpn *p) | |
1022 | { | |
1023 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1024 | } | |
1025 | ||
1026 | /* Generate EAD-EVI for all VNIs */ | |
1027 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1028 | struct bgp_evpn_es *es) | |
1029 | { | |
1030 | struct listnode *evi_node; | |
1031 | struct prefix_evpn p; | |
1032 | struct bgp_evpn_es_evi *es_evi; | |
1033 | ||
fe8293c3 AK |
1034 | /* EAD-per-EVI routes have been suppressed */ |
1035 | if (!bgp_mh_info->ead_evi_tx) | |
1036 | return; | |
1037 | ||
c44ab6f1 AK |
1038 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1039 | /* EAD-EVI route add for this ES is already done */ | |
1040 | return; | |
1041 | ||
1042 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1043 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1044 | &es->esi, es->originator_ip); | |
1045 | ||
1046 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1047 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1048 | continue; | |
1049 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1050 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1051 | "%u: Type4 route creation failure for ESI %s", | |
1052 | bgp->vrf_id, es->esi_str); | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * Withdraw EAD-EVI for all VNIs | |
1058 | */ | |
1059 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1060 | struct bgp_evpn_es *es) | |
1061 | { | |
1062 | struct listnode *evi_node; | |
1063 | struct prefix_evpn p; | |
1064 | struct bgp_evpn_es_evi *es_evi; | |
1065 | ||
1066 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1067 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1068 | /* EAD-EVI route has not been advertised for this ES */ | |
1069 | return; | |
1070 | ||
1071 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1072 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1073 | &es->esi, es->originator_ip); | |
1074 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1075 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1076 | continue; | |
1077 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1078 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1079 | "%u: Type4 route creation failure for ESI %s", | |
1080 | bgp->vrf_id, es->esi_str); | |
1081 | } | |
1082 | } | |
185fb14a AK |
1083 | |
1084 | /* | |
c44ab6f1 | 1085 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1086 | */ |
c44ab6f1 AK |
1087 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1088 | struct attr *attr, uint8_t *pfx, int psize, | |
1089 | uint32_t addpath_id) | |
185fb14a AK |
1090 | { |
1091 | int ret; | |
c44ab6f1 | 1092 | struct prefix_rd prd; |
185fb14a | 1093 | esi_t esi; |
c44ab6f1 AK |
1094 | uint32_t eth_tag; |
1095 | mpls_label_t label; | |
185fb14a | 1096 | struct in_addr vtep_ip; |
185fb14a AK |
1097 | struct prefix_evpn p; |
1098 | ||
c44ab6f1 | 1099 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1100 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1101 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1102 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1103 | return -1; |
1104 | } | |
1105 | ||
1106 | /* Make prefix_rd */ | |
1107 | prd.family = AF_UNSPEC; | |
1108 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1109 | memcpy(&prd.val, pfx, RD_BYTES); |
1110 | pfx += RD_BYTES; | |
185fb14a AK |
1111 | |
1112 | /* get the ESI */ | |
1113 | memcpy(&esi, pfx, ESI_BYTES); | |
1114 | pfx += ESI_BYTES; | |
1115 | ||
c44ab6f1 AK |
1116 | /* Copy Ethernet Tag */ |
1117 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1118 | eth_tag = ntohl(eth_tag); | |
1119 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1120 | |
c44ab6f1 | 1121 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1122 | |
c44ab6f1 AK |
1123 | /* EAD route prefix doesn't include the nexthop in the global |
1124 | * table | |
1125 | */ | |
3a6290bd | 1126 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1127 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1128 | /* Process the route. */ |
1129 | if (attr) { | |
1130 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1131 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1132 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1133 | } else { |
1134 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1135 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1136 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1137 | } |
1138 | return ret; | |
1139 | } | |
1140 | ||
c44ab6f1 AK |
1141 | /*****************************************************************************/ |
1142 | /* Ethernet Segment Management | |
1143 | * 1. Ethernet Segment is a collection of links attached to the same | |
1144 | * server (MHD) or switch (MHN) | |
1145 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1146 | * 10-byte ES-ID. | |
1147 | * 3. Local ESs are configured in zebra and sent to BGP | |
1148 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1149 | * created on first reference and release on last de-reference | |
1150 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1151 | * to have an ES peer. | |
1152 | */ | |
1153 | ||
1154 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1155 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1156 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1157 | * have been imported into one or more VNIs | |
185fb14a | 1158 | */ |
c44ab6f1 AK |
1159 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1160 | { | |
1161 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1162 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1163 | ||
1164 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1165 | } | |
1166 | ||
1167 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1168 | struct in_addr vtep_ip) | |
1169 | { | |
1170 | struct bgp_evpn_es_vtep *es_vtep; | |
1171 | ||
1172 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1173 | ||
1174 | es_vtep->es = es; | |
1175 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1176 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1177 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1178 | ||
1179 | return es_vtep; | |
1180 | } | |
1181 | ||
1182 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1183 | { | |
1184 | struct bgp_evpn_es *es = es_vtep->es; | |
1185 | ||
1186 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1187 | es_vtep->evi_cnt) | |
1188 | /* as long as there is some reference we can't free it */ | |
1189 | return; | |
1190 | ||
1191 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1192 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1193 | } | |
1194 | ||
1195 | /* check if VTEP is already part of the list */ | |
1196 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1197 | struct in_addr vtep_ip) | |
1198 | { | |
1199 | struct listnode *node = NULL; | |
1200 | struct bgp_evpn_es_vtep *es_vtep; | |
1201 | ||
1202 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1203 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1204 | return es_vtep; | |
1205 | } | |
1206 | return NULL; | |
1207 | } | |
1208 | ||
1209 | /* Send the remote ES to zebra for NHG programming */ | |
1210 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1211 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1212 | { | |
1213 | struct bgp_evpn_es *es = es_vtep->es; | |
1214 | struct stream *s; | |
74e2bd89 | 1215 | uint32_t flags = 0; |
c44ab6f1 AK |
1216 | |
1217 | /* Check socket. */ | |
1218 | if (!zclient || zclient->sock < 0) | |
1219 | return 0; | |
1220 | ||
1221 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1222 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1223 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1224 | zlog_debug("No zebra instance, not installing remote es %s", | |
1225 | es->esi_str); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
74e2bd89 AK |
1229 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1230 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1231 | ||
c44ab6f1 AK |
1232 | s = zclient->obuf; |
1233 | stream_reset(s); | |
1234 | ||
1235 | zclient_create_header(s, | |
1236 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1237 | bgp->vrf_id); | |
1238 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1239 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1240 | if (add) { |
1241 | stream_putl(s, flags); | |
1242 | stream_putc(s, es_vtep->df_alg); | |
1243 | stream_putw(s, es_vtep->df_pref); | |
1244 | } | |
c44ab6f1 AK |
1245 | |
1246 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1247 | ||
1248 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1249 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1250 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1251 | |
1252 | return zclient_send_message(zclient); | |
1253 | } | |
1254 | ||
1255 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1256 | struct bgp_evpn_es_vtep *es_vtep, |
1257 | bool param_change) | |
c44ab6f1 AK |
1258 | { |
1259 | bool old_active; | |
1260 | bool new_active; | |
1261 | ||
1262 | old_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1263 | /* currently we need an active EVI reference to use the VTEP as | |
1264 | * a nexthop. this may change... | |
1265 | */ | |
1266 | if (es_vtep->evi_cnt) | |
1267 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1268 | else | |
1269 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1270 | ||
1271 | new_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1272 | ||
74e2bd89 | 1273 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1274 | |
74e2bd89 AK |
1275 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1276 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1277 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1278 | new_active ? "active" : "inactive", | |
1279 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1280 | |
74e2bd89 AK |
1281 | /* send remote ES to zebra */ |
1282 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1283 | |
8bcb09a1 AK |
1284 | /* The NHG is updated first for efficient failover handling. |
1285 | * Note the NHG can be de-activated while there are bgp | |
1286 | * routes referencing it. Zebra is capable of handling that | |
1287 | * elegantly by holding the NHG till all routes using it are | |
1288 | * removed. | |
26c03e43 | 1289 | */ |
8bcb09a1 | 1290 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1291 | /* queue up the es for background consistency checks */ |
1292 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1293 | } | |
c44ab6f1 AK |
1294 | } |
1295 | ||
1296 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1297 | struct bgp_evpn_es *es, |
1298 | struct in_addr vtep_ip, | |
1299 | bool esr, uint8_t df_alg, | |
1300 | uint16_t df_pref) | |
c44ab6f1 AK |
1301 | { |
1302 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1303 | bool param_change = false; |
c44ab6f1 AK |
1304 | |
1305 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1306 | ||
1307 | if (!es_vtep) | |
1308 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1309 | ||
1310 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1311 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1312 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1313 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1314 | |
74e2bd89 | 1315 | if (esr) { |
c44ab6f1 | 1316 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1317 | if ((es_vtep->df_pref != df_pref) |
1318 | || (es_vtep->df_alg != df_alg)) { | |
1319 | param_change = true; | |
1320 | es_vtep->df_pref = df_pref; | |
1321 | es_vtep->df_alg = df_alg; | |
1322 | } | |
1323 | } else { | |
c44ab6f1 | 1324 | ++es_vtep->evi_cnt; |
74e2bd89 | 1325 | } |
c44ab6f1 | 1326 | |
74e2bd89 | 1327 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1328 | |
1329 | return es_vtep; | |
1330 | } | |
1331 | ||
1332 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1333 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1334 | { | |
74e2bd89 AK |
1335 | bool param_change = false; |
1336 | ||
c44ab6f1 | 1337 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1338 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1339 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1340 | if (esr) { |
1341 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1342 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1343 | param_change = true; | |
1344 | es_vtep->df_pref = 0; | |
1345 | es_vtep->df_alg = 0; | |
1346 | } | |
c44ab6f1 AK |
1347 | } else { |
1348 | if (es_vtep->evi_cnt) | |
1349 | --es_vtep->evi_cnt; | |
1350 | } | |
1351 | ||
74e2bd89 | 1352 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1353 | bgp_evpn_es_vtep_free(es_vtep); |
1354 | } | |
1355 | ||
1356 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1357 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1358 | { | |
1359 | struct bgp_evpn_es_vtep *es_vtep; | |
1360 | ||
1361 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1362 | if (es_vtep) | |
1363 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1364 | } | |
1365 | ||
26c03e43 | 1366 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1367 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1368 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1369 | * state changes. | |
1370 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1371 | * the detination for efficient updates on - | |
1372 | * a. VTEP add/del - this results in a L3NHG update. | |
1373 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1374 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 AK |
1375 | ****************************************************************************/ |
1376 | void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) | |
1377 | { | |
1378 | bgp_evpn_path_es_unlink(es_info); | |
1379 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1380 | } | |
1381 | ||
1382 | static struct bgp_path_es_info * | |
1383 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1384 | { | |
1385 | struct bgp_path_info_extra *e; | |
1386 | ||
1387 | e = bgp_path_info_extra_get(pi); | |
1388 | ||
1389 | /* If es_info doesn't exist allocate it */ | |
1390 | if (!e->es_info) { | |
1391 | e->es_info = XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1392 | sizeof(struct bgp_path_es_info)); | |
1393 | e->es_info->pi = pi; | |
1394 | e->es_info->vni = vni; | |
1395 | } | |
1396 | ||
1397 | return e->es_info; | |
1398 | } | |
1399 | ||
1400 | void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) | |
1401 | { | |
1402 | struct bgp_evpn_es *es = es_info->es; | |
1403 | struct bgp_path_info *pi; | |
26c03e43 AK |
1404 | |
1405 | if (!es) | |
1406 | return; | |
1407 | ||
1408 | pi = es_info->pi; | |
1409 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1410 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1411 | &pi->net->p, es->esi_str); | |
26c03e43 | 1412 | |
58bff4d1 AK |
1413 | if (es_info->vni) |
1414 | list_delete_node(es->macip_evi_path_list, | |
1415 | &es_info->es_listnode); | |
1416 | else | |
1417 | list_delete_node(es->macip_global_path_list, | |
1418 | &es_info->es_listnode); | |
26c03e43 AK |
1419 | es_info->es = NULL; |
1420 | ||
1421 | /* if there are no other references against the ES it | |
1422 | * needs to be freed | |
1423 | */ | |
1424 | bgp_evpn_es_free(es, __func__); | |
1425 | ||
1426 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1427 | * along with the path. | |
1428 | */ | |
1429 | } | |
1430 | ||
1431 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1432 | { | |
1433 | struct bgp_path_es_info *es_info; | |
1434 | struct bgp_evpn_es *es; | |
58bff4d1 AK |
1435 | struct bgp *bgp_evpn; |
1436 | struct prefix_evpn *evp; | |
26c03e43 AK |
1437 | |
1438 | es_info = pi->extra ? pi->extra->es_info : NULL; | |
1439 | /* if the esi is zero just unlink the path from the old es */ | |
1440 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1441 | if (es_info) | |
1442 | bgp_evpn_path_es_unlink(es_info); | |
1443 | return; | |
1444 | } | |
1445 | ||
58bff4d1 | 1446 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1447 | if (!bgp_evpn) |
1448 | return; | |
1449 | ||
58bff4d1 AK |
1450 | /* Only MAC-IP routes need to be linked (MAC-only routes can be |
1451 | * skipped) as these lists are maintained for managing | |
1452 | * host routes in the tenant VRF | |
1453 | */ | |
1454 | evp = (struct prefix_evpn *)&pi->net->p; | |
1455 | if (!(is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp))) | |
1456 | return; | |
1457 | ||
26c03e43 AK |
1458 | /* setup es_info against the path if it doesn't aleady exist */ |
1459 | if (!es_info) | |
1460 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1461 | ||
1462 | /* find-create ES */ | |
1463 | es = bgp_evpn_es_find(esi); | |
1464 | if (!es) | |
f61fbf21 | 1465 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1466 | |
1467 | /* dup check */ | |
1468 | if (es_info->es == es) | |
1469 | return; | |
1470 | ||
1471 | /* unlink old ES if any */ | |
1472 | bgp_evpn_path_es_unlink(es_info); | |
1473 | ||
1474 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1475 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1476 | es->esi_str); | |
26c03e43 AK |
1477 | |
1478 | /* link mac-ip path to the new destination ES */ | |
1479 | es_info->es = es; | |
1480 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1481 | if (es_info->vni) |
1482 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1483 | else | |
1484 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1485 | } |
1486 | ||
58bff4d1 AK |
1487 | /* When a remote ES is added to a VRF, routes using that as |
1488 | * a destination need to be migrated to a L3NHG or viceversa. | |
1489 | * This is done indirectly by re-attempting an install of the | |
1490 | * route in the associated VRFs. As a part of the VRF install use | |
1491 | * of l3 NHG is evaluated and this results in the | |
1492 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1493 | */ |
1494 | static void | |
1495 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1496 | const char *reason) |
26c03e43 AK |
1497 | { |
1498 | struct listnode *node; | |
1499 | struct bgp_path_es_info *es_info; | |
1500 | struct bgp_path_info *pi; | |
58bff4d1 | 1501 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1502 | |
36dd4574 AK |
1503 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1504 | return; | |
1505 | ||
26c03e43 | 1506 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1507 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1508 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1509 | |
58bff4d1 | 1510 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1511 | pi = es_info->pi; |
26c03e43 AK |
1512 | |
1513 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2eef4f20 | 1514 | zlog_debug( |
58bff4d1 AK |
1515 | "update path %pFX linked to es %s on vrf chg", |
1516 | &pi->net->p, es->esi_str); | |
1517 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1518 | 1); | |
26c03e43 AK |
1519 | } |
1520 | } | |
1521 | ||
c44ab6f1 AK |
1522 | /* compare ES-IDs for the global ES RB tree */ |
1523 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1524 | const struct bgp_evpn_es *es2) | |
1525 | { | |
1526 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1527 | } | |
1528 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1529 | ||
1530 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1531 | { |
c44ab6f1 | 1532 | struct bgp_evpn_es tmp; |
185fb14a | 1533 | |
185fb14a | 1534 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1535 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1536 | } |
1537 | ||
c44ab6f1 | 1538 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1539 | { |
c44ab6f1 | 1540 | struct bgp_evpn_es *es; |
185fb14a AK |
1541 | |
1542 | if (!bgp) | |
1543 | return NULL; | |
1544 | ||
c44ab6f1 | 1545 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1546 | |
c44ab6f1 | 1547 | /* set the ESI */ |
185fb14a | 1548 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1549 | |
1550 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1551 | es->es_vtep_list = list_new(); |
1552 | listset_app_node_mem(es->es_vtep_list); | |
1553 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1554 | |
c44ab6f1 | 1555 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1556 | |
c44ab6f1 | 1557 | /* Initialize the ES routing table */ |
185fb14a AK |
1558 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1559 | ||
c44ab6f1 AK |
1560 | /* Add to rb_tree */ |
1561 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1562 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1563 | return NULL; | |
1564 | } | |
1565 | ||
c44ab6f1 AK |
1566 | /* Initialise the ES-EVI list */ |
1567 | es->es_evi_list = list_new(); | |
1568 | listset_app_node_mem(es->es_evi_list); | |
1569 | ||
c589d847 AK |
1570 | /* Initialise the ES-VRF list used for L3NHG management */ |
1571 | es->es_vrf_list = list_new(); | |
1572 | listset_app_node_mem(es->es_vrf_list); | |
1573 | ||
26c03e43 | 1574 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1575 | es->macip_evi_path_list = list_new(); |
1576 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1577 | es->macip_global_path_list = list_new(); |
1578 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1579 | |
c44ab6f1 AK |
1580 | QOBJ_REG(es, bgp_evpn_es); |
1581 | ||
185fb14a AK |
1582 | return es; |
1583 | } | |
1584 | ||
c44ab6f1 | 1585 | /* Free a given ES - |
185fb14a AK |
1586 | * This just frees appropriate memory, caller should have taken other |
1587 | * needed actions. | |
1588 | */ | |
45a859f1 | 1589 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1590 | { |
26c03e43 | 1591 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1592 | || listcount(es->macip_evi_path_list) |
1593 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1594 | return; |
1595 | ||
45a859f1 AK |
1596 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1597 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1598 | ||
c44ab6f1 AK |
1599 | /* cleanup resources maintained against the ES */ |
1600 | list_delete(&es->es_evi_list); | |
c589d847 | 1601 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1602 | list_delete(&es->es_vtep_list); |
d656e0ae | 1603 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1604 | list_delete(&es->macip_global_path_list); |
185fb14a | 1605 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1606 | |
1607 | /* remove the entry from various databases */ | |
1608 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1609 | bgp_evpn_es_cons_checks_pend_del(es); | |
1610 | ||
185fb14a AK |
1611 | QOBJ_UNREG(es); |
1612 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1613 | } | |
1614 | ||
c44ab6f1 AK |
1615 | /* init local info associated with the ES */ |
1616 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1617 | { |
c44ab6f1 | 1618 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
185fb14a | 1619 | |
c44ab6f1 AK |
1620 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1621 | return; | |
185fb14a | 1622 | |
c44ab6f1 AK |
1623 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
1624 | listnode_init(&es->es_listnode, es); | |
1625 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1626 | |
c44ab6f1 AK |
1627 | /* auto derive RD for this es */ |
1628 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1629 | es->prd.family = AF_UNSPEC; | |
1630 | es->prd.prefixlen = 64; | |
23d0a753 | 1631 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 AK |
1632 | (void)str2prefix_rd(buf, &es->prd); |
1633 | } | |
1634 | ||
1635 | /* clear any local info associated with the ES */ | |
1636 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es) | |
1637 | { | |
1638 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1639 | return; | |
185fb14a | 1640 | |
c44ab6f1 | 1641 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1642 | |
c44ab6f1 AK |
1643 | /* remove from the ES local list */ |
1644 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1645 | ||
1646 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1647 | ||
45a859f1 | 1648 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1649 | } |
1650 | ||
c44ab6f1 AK |
1651 | /* eval remote info associated with the ES */ |
1652 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1653 | { | |
1654 | if (es->remote_es_evi_cnt) { | |
1655 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1656 | } else { | |
1657 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1658 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1659 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1660 | } |
1661 | } | |
1662 | } | |
1663 | ||
70524092 AK |
1664 | /* If ES is present and local it needs to be active/oper-up for |
1665 | * including L3 EC | |
1666 | */ | |
1667 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1668 | { |
70524092 AK |
1669 | struct bgp_evpn_es *es; |
1670 | ||
1671 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1672 | return true; | |
1673 | ||
1674 | es = bgp_evpn_es_find(esi); | |
1675 | ||
1676 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1677 | || bgp_evpn_local_es_is_active(es)); | |
1678 | } | |
1679 | ||
d656e0ae AK |
1680 | /* Update all local MAC-IP routes in the VNI routing table associated |
1681 | * with the ES. When the ES is down the routes are advertised without | |
1682 | * the L3 extcomm | |
70524092 AK |
1683 | */ |
1684 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1685 | { | |
1686 | struct listnode *node; | |
1687 | struct bgp_path_es_info *es_info; | |
1688 | struct bgp_path_info *pi; | |
1689 | char prefix_buf[PREFIX_STRLEN]; | |
1690 | struct bgp *bgp; | |
1691 | struct bgpevpn *vpn; | |
1692 | ||
1693 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1694 | return; | |
1695 | ||
1696 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1697 | zlog_debug("update paths linked to es %s on oper chg", | |
1698 | es->esi_str); | |
1699 | ||
1700 | bgp = bgp_get_evpn(); | |
d656e0ae | 1701 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 AK |
1702 | pi = es_info->pi; |
1703 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
1704 | continue; | |
1705 | ||
1706 | if (pi->type != ZEBRA_ROUTE_BGP | |
1707 | || pi->sub_type != BGP_ROUTE_STATIC) | |
1708 | continue; | |
1709 | ||
1710 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1711 | if (!vpn) | |
1712 | continue; | |
1713 | ||
1714 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 AK |
1715 | zlog_debug( |
1716 | "update path %d %s linked to es %s on oper chg", | |
1717 | es_info->vni, | |
1718 | prefix2str(&pi->net->p, prefix_buf, | |
1719 | sizeof(prefix_buf)), | |
1720 | es->esi_str); | |
70524092 AK |
1721 | |
1722 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1723 | __func__); | |
1724 | } | |
74be8313 AK |
1725 | } |
1726 | ||
1727 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, | |
1728 | struct bgp_evpn_es *es) | |
185fb14a | 1729 | { |
185fb14a | 1730 | struct prefix_evpn p; |
c44ab6f1 | 1731 | int ret; |
185fb14a | 1732 | |
c44ab6f1 AK |
1733 | /* withdraw ESR */ |
1734 | /* Delete and withdraw locally learnt ES route */ | |
1735 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1736 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1737 | if (ret) { | |
1738 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1739 | "%u failed to delete type-4 route for ESI %s", | |
1740 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1741 | } |
1742 | ||
c44ab6f1 AK |
1743 | /* withdraw EAD-EVI */ |
1744 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1745 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1746 | |
c44ab6f1 AK |
1747 | /* withdraw EAD-ES */ |
1748 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1749 | &es->esi, es->originator_ip); | |
1750 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1751 | if (ret) { | |
1752 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1753 | "%u failed to delete type-1 route for ESI %s", | |
1754 | bgp->vrf_id, es->esi_str); | |
1755 | } | |
70524092 AK |
1756 | |
1757 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1758 | } |
1759 | ||
74be8313 AK |
1760 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1761 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1762 | { |
74be8313 | 1763 | bool old_active; |
c44ab6f1 | 1764 | |
74be8313 AK |
1765 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1766 | return; | |
c44ab6f1 | 1767 | |
74be8313 AK |
1768 | old_active = bgp_evpn_local_es_is_active(es); |
1769 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1770 | ||
1771 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1772 | zlog_debug("local es %s down", es->esi_str); | |
1773 | ||
1774 | if (old_active) | |
1775 | bgp_evpn_local_es_deactivate(bgp, es); | |
1776 | } | |
1777 | ||
1778 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1779 | bool regen_ead, bool regen_esr) | |
1780 | { | |
1781 | struct prefix_evpn p; | |
c44ab6f1 | 1782 | |
74e2bd89 AK |
1783 | if (regen_esr) { |
1784 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1785 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1786 | /* generate ESR */ | |
1787 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1788 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1789 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1790 | "%u: Type4 route creation failure for ESI %s", | |
1791 | bgp->vrf_id, es->esi_str); | |
1792 | } | |
c44ab6f1 | 1793 | |
74e2bd89 AK |
1794 | if (regen_ead) { |
1795 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1796 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1797 | /* generate EAD-EVI */ | |
1798 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1799 | |
74e2bd89 AK |
1800 | /* generate EAD-ES */ |
1801 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1802 | es->originator_ip); | |
d934e491 | 1803 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1804 | } |
70524092 AK |
1805 | |
1806 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1807 | } |
1808 | ||
74be8313 AK |
1809 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1810 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1811 | bool regen_esr) | |
1812 | { | |
1813 | bool regen_ead = false; | |
1814 | bool active = false; | |
1815 | ||
1816 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1817 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1818 | zlog_debug("local es %s up", es->esi_str); | |
1819 | ||
1820 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1821 | regen_esr = true; | |
1822 | regen_ead = true; | |
1823 | } | |
1824 | ||
1825 | active = bgp_evpn_local_es_is_active(es); | |
1826 | if (active && (regen_ead || regen_esr)) | |
1827 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
1828 | } | |
1829 | ||
1830 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
1831 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
1832 | * bypass state. | |
1833 | * PS: EAD-per-EVI will continue to be advertised | |
1834 | */ | |
1835 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
1836 | struct bgp_evpn_es *es, bool bypass) | |
1837 | { | |
1838 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
1839 | bool old_active; | |
1840 | bool new_active; | |
1841 | ||
1842 | if (bypass == old_bypass) | |
1843 | return; | |
1844 | ||
1845 | old_active = bgp_evpn_local_es_is_active(es); | |
1846 | if (bypass) | |
1847 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1848 | else | |
1849 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1850 | ||
1851 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1852 | zlog_debug("local es %s bypass %s", es->esi_str, | |
1853 | bypass ? "set" : "clear"); | |
1854 | ||
1855 | new_active = bgp_evpn_local_es_is_active(es); | |
1856 | if (old_active != new_active) { | |
1857 | if (new_active) | |
1858 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
1859 | else | |
1860 | bgp_evpn_local_es_deactivate(bgp, es); | |
1861 | } | |
1862 | } | |
1863 | ||
c44ab6f1 AK |
1864 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
1865 | { | |
1866 | struct bgp_evpn_es_evi *es_evi; | |
1867 | struct listnode *evi_node, *evi_next_node; | |
1868 | ||
1869 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1870 | zlog_debug("del local es %s", es->esi_str); | |
1871 | ||
1872 | /* Delete all local EVPN ES routes from ESI table | |
1873 | * and schedule for processing (to withdraw from peers)) | |
1874 | */ | |
1875 | bgp_evpn_es_route_del_all(bgp, es); | |
1876 | ||
1877 | /* release all local ES EVIs associated with the ES */ | |
1878 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
1879 | evi_next_node, es_evi)) { | |
1880 | bgp_evpn_local_es_evi_do_del(es_evi); | |
1881 | } | |
1882 | ||
1883 | /* Clear local info associated with the ES and free it up if there is | |
1884 | * no remote reference | |
1885 | */ | |
1886 | bgp_evpn_es_local_info_clear(es); | |
1887 | } | |
1888 | ||
7904e9fd AK |
1889 | bool bgp_evpn_is_esi_local(esi_t *esi) |
1890 | { | |
1891 | struct bgp_evpn_es *es = NULL; | |
1892 | ||
1893 | /* Lookup ESI hash - should exist. */ | |
1894 | es = bgp_evpn_es_find(esi); | |
1895 | return es ? !!(es->flags & BGP_EVPNES_LOCAL) : false; | |
1896 | } | |
1897 | ||
c44ab6f1 AK |
1898 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
1899 | { | |
1900 | struct bgp_evpn_es *es = NULL; | |
1901 | ||
1902 | /* Lookup ESI hash - should exist. */ | |
1903 | es = bgp_evpn_es_find(esi); | |
1904 | if (!es) { | |
1905 | flog_warn(EC_BGP_EVPN_ESI, | |
1906 | "%u: ES %s missing at local ES DEL", | |
1907 | bgp->vrf_id, es->esi_str); | |
1908 | return -1; | |
1909 | } | |
1910 | ||
1911 | bgp_evpn_local_es_do_del(bgp, es); | |
1912 | return 0; | |
1913 | } | |
1914 | ||
1915 | /* Handle device to ES id association. Results in the creation of a local | |
1916 | * ES. | |
1917 | */ | |
1918 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 1919 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 1920 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
1921 | { |
1922 | char buf[ESI_STR_LEN]; | |
1923 | struct bgp_evpn_es *es; | |
1924 | bool new_es = true; | |
74e2bd89 | 1925 | bool regen_esr = false; |
c44ab6f1 AK |
1926 | |
1927 | /* create the new es */ | |
1928 | es = bgp_evpn_es_find(esi); | |
1929 | if (es) { | |
1930 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1931 | new_es = false; | |
1932 | } else { | |
1933 | es = bgp_evpn_es_new(bgp, esi); | |
1934 | if (!es) { | |
1935 | flog_err(EC_BGP_ES_CREATE, | |
1936 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
1937 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
1938 | return -1; | |
1939 | } | |
1940 | } | |
1941 | ||
1942 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
1943 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
1944 | es->esi_str, &originator_ip, df_pref, | |
1945 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
1946 | |
1947 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
1948 | if (df_pref != es->df_pref) { |
1949 | es->df_pref = df_pref; | |
1950 | regen_esr = true; | |
1951 | } | |
c44ab6f1 AK |
1952 | bgp_evpn_es_local_info_set(bgp, es); |
1953 | ||
1954 | /* import all remote Type-4 routes in the ES table */ | |
1955 | if (new_es) | |
1956 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
1957 | true /* install */); | |
1958 | ||
1959 | /* create and advertise EAD-EVI routes for the ES - | |
1960 | * XXX - till an ES-EVI reference is created there is really nothing to | |
1961 | * advertise | |
1962 | */ | |
1963 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
1964 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
1965 | ||
74be8313 AK |
1966 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
1967 | ||
c44ab6f1 AK |
1968 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
1969 | * can be generated even if the link is inactive. | |
1970 | */ | |
1971 | if (oper_up) | |
74e2bd89 | 1972 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
1973 | else |
1974 | bgp_evpn_local_es_down(bgp, es); | |
1975 | ||
1976 | return 0; | |
1977 | } | |
1978 | ||
9e0c2fd1 AK |
1979 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
1980 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
1981 | { |
1982 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
1983 | struct listnode *node; | |
1984 | struct bgp_evpn_es_vtep *es_vtep; | |
1985 | bool first = true; | |
ec779825 | 1986 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
1987 | |
1988 | vtep_str[0] = '\0'; | |
1989 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1990 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 1991 | |
c44ab6f1 | 1992 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 1993 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 1994 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 1995 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
1996 | |
1997 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
1998 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
1999 | if (first) | |
c44ab6f1 | 2000 | first = false; |
9e0c2fd1 AK |
2001 | else |
2002 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2003 | strlcat(vtep_str, |
ec779825 AK |
2004 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2005 | sizeof(ip_buf)), | |
23d0a753 | 2006 | vtep_str_size); |
9e0c2fd1 AK |
2007 | strlcat(vtep_str, "(", vtep_str_size); |
2008 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2009 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2010 | } |
2011 | ||
2012 | return vtep_str; | |
2013 | } | |
2014 | ||
c44ab6f1 AK |
2015 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2016 | struct bgp_evpn_es_vtep *es_vtep) | |
2017 | { | |
2018 | json_object *json_vtep_entry; | |
2019 | json_object *json_flags; | |
ec779825 | 2020 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2021 | |
2022 | json_vtep_entry = json_object_new_object(); | |
2023 | ||
ec779825 AK |
2024 | json_object_string_add( |
2025 | json_vtep_entry, "vtep_ip", | |
2026 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
2027 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2028 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2029 | json_flags = json_object_new_array(); | |
2030 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2031 | json_array_string_add(json_flags, "esr"); | |
2032 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2033 | json_array_string_add(json_flags, "active"); | |
2034 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2035 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2036 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2037 | es_vtep->df_pref); | |
2038 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2039 | es_vtep->df_pref); | |
2040 | } | |
c44ab6f1 AK |
2041 | } |
2042 | ||
2043 | json_object_array_add(json_vteps, | |
2044 | json_vtep_entry); | |
2045 | } | |
2046 | ||
74e2bd89 AK |
2047 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2048 | struct bgp_evpn_es *es) | |
2049 | { | |
2050 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2051 | struct listnode *node; | |
2052 | struct bgp_evpn_es_vtep *es_vtep; | |
2053 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2054 | ||
2055 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2056 | vtep_flag_str[0] = '\0'; | |
2057 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2058 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2059 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2060 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2061 | ||
2062 | if (!strlen(vtep_flag_str)) | |
2063 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2064 | ||
ec779825 | 2065 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2066 | vtep_flag_str); |
2067 | ||
2068 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2069 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2070 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2071 | sizeof(alg_buf)), | |
2072 | es_vtep->df_pref); | |
2073 | else | |
2074 | vty_out(vty, "\n"); | |
2075 | } | |
2076 | } | |
2077 | ||
c44ab6f1 AK |
2078 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2079 | struct bgp_evpn_es *es, json_object *json) | |
2080 | { | |
2081 | char buf1[RD_ADDRSTRLEN]; | |
2082 | struct listnode *node; | |
2083 | struct bgp_evpn_es_vtep *es_vtep; | |
2084 | ||
2085 | if (json) { | |
2086 | json_object *json_vteps; | |
2087 | json_object *json_types; | |
2088 | ||
2089 | json_object_string_add(json, "esi", es->esi_str); | |
2090 | json_object_string_add(json, "rd", | |
2091 | prefix_rd2str(&es->prd, buf1, | |
2092 | sizeof(buf1))); | |
2093 | ||
2094 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2095 | json_types = json_object_new_array(); | |
2096 | if (es->flags & BGP_EVPNES_LOCAL) | |
2097 | json_array_string_add(json_types, "local"); | |
2098 | if (es->flags & BGP_EVPNES_REMOTE) | |
2099 | json_array_string_add(json_types, "remote"); | |
2100 | json_object_object_add(json, "type", json_types); | |
2101 | } | |
2102 | ||
2103 | if (listcount(es->es_vtep_list)) { | |
2104 | json_vteps = json_object_new_array(); | |
2105 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2106 | node, es_vtep)) { | |
2107 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2108 | } | |
2109 | json_object_object_add(json, "vteps", json_vteps); | |
2110 | } | |
2111 | json_object_int_add(json, "vniCount", | |
2112 | listcount(es->es_evi_list)); | |
2113 | } else { | |
2114 | char type_str[4]; | |
2115 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2116 | ||
2117 | type_str[0] = '\0'; | |
74be8313 AK |
2118 | if (es->flags & BGP_EVPNES_BYPASS) |
2119 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2120 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2121 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2122 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2123 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2124 | if (es->inconsistencies) |
9e0c2fd1 | 2125 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2126 | |
9e0c2fd1 | 2127 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2128 | |
2129 | if (es->flags & BGP_EVPNES_LOCAL) | |
2130 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2131 | else | |
9e0c2fd1 | 2132 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2133 | |
2134 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2135 | es->esi_str, type_str, buf1, | |
2136 | listcount(es->es_evi_list), vtep_str); | |
2137 | } | |
2138 | } | |
2139 | ||
2140 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2141 | struct bgp_evpn_es *es, json_object *json) | |
2142 | { | |
ec779825 | 2143 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 2144 | |
c44ab6f1 AK |
2145 | if (json) { |
2146 | json_object *json_flags; | |
2147 | json_object *json_incons; | |
74e2bd89 AK |
2148 | json_object *json_vteps; |
2149 | struct listnode *node; | |
2150 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2151 | |
2152 | /* Add the "brief" info first */ | |
2153 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2154 | if (es->flags |
2155 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2156 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2157 | json_flags = json_object_new_array(); |
2158 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2159 | json_array_string_add(json_flags, "up"); | |
2160 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2161 | json_array_string_add(json_flags, | |
2162 | "advertiseEVI"); | |
74be8313 AK |
2163 | if (es->flags & BGP_EVPNES_BYPASS) |
2164 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2165 | json_object_object_add(json, "flags", json_flags); |
2166 | } | |
2167 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 2168 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 2169 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
2170 | json_object_int_add(json, "remoteVniCount", |
2171 | es->remote_es_evi_cnt); | |
229587fb AK |
2172 | json_object_int_add(json, "vrfCount", |
2173 | listcount(es->es_vrf_list)); | |
2174 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2175 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2176 | json_object_int_add(json, "macipGlobalPathCount", |
2177 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2178 | json_object_int_add(json, "inconsistentVniVtepCount", |
2179 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2180 | if (listcount(es->es_vtep_list)) { |
2181 | json_vteps = json_object_new_array(); | |
2182 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2183 | es_vtep)) { | |
2184 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2185 | } | |
2186 | json_object_object_add(json, "vteps", json_vteps); | |
2187 | } | |
c44ab6f1 AK |
2188 | if (es->inconsistencies) { |
2189 | json_incons = json_object_new_array(); | |
2190 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2191 | json_array_string_add(json_incons, | |
2192 | "vni-vtep-mismatch"); | |
2193 | json_object_object_add(json, "inconsistencies", | |
2194 | json_incons); | |
2195 | } | |
2196 | } else { | |
2197 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2198 | char type_str[4]; | |
c44ab6f1 AK |
2199 | char buf1[RD_ADDRSTRLEN]; |
2200 | ||
2201 | type_str[0] = '\0'; | |
2202 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2203 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2204 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2205 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2206 | |
c44ab6f1 AK |
2207 | if (es->flags & BGP_EVPNES_LOCAL) |
2208 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2209 | else | |
9e0c2fd1 | 2210 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2211 | |
2212 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2213 | vty_out(vty, " Type: %s\n", type_str); | |
2214 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2215 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2216 | if (es->flags & BGP_EVPNES_LOCAL) |
2217 | vty_out(vty, " Local ES DF preference: %u\n", | |
2218 | es->df_pref); | |
74be8313 AK |
2219 | if (es->flags & BGP_EVPNES_BYPASS) |
2220 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2221 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2222 | vty_out(vty, " Remote VNI Count: %d\n", | |
2223 | es->remote_es_evi_cnt); | |
229587fb | 2224 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2225 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2226 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2227 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2228 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2229 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2230 | es->incons_evi_vtep_cnt); | |
2231 | if (es->inconsistencies) { | |
2232 | incons_str[0] = '\0'; | |
2233 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2234 | strlcat(incons_str, "vni-vtep-mismatch", |
2235 | sizeof(incons_str)); | |
c44ab6f1 | 2236 | } else { |
9e0c2fd1 | 2237 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2238 | } |
2239 | vty_out(vty, " Inconsistencies: %s\n", | |
2240 | incons_str); | |
74e2bd89 AK |
2241 | if (listcount(es->es_vtep_list)) { |
2242 | vty_out(vty, " VTEPs:\n"); | |
2243 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2244 | } | |
c44ab6f1 AK |
2245 | vty_out(vty, "\n"); |
2246 | } | |
2247 | } | |
2248 | ||
2249 | /* Display all ESs */ | |
2250 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2251 | { | |
2252 | struct bgp_evpn_es *es; | |
9c7edc03 | 2253 | json_object *json_array = NULL; |
c44ab6f1 AK |
2254 | json_object *json = NULL; |
2255 | ||
2256 | if (uj) { | |
2257 | /* create an array of ESs */ | |
2258 | json_array = json_object_new_array(); | |
2259 | } else { | |
2260 | if (!detail) { | |
2261 | vty_out(vty, | |
74be8313 | 2262 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2263 | vty_out(vty, |
2264 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2265 | vty_out(vty, | |
2266 | "%-30s %-5s %-21s %-8s %s\n", | |
2267 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2268 | } | |
2269 | } | |
2270 | ||
2271 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2272 | if (uj) | |
2273 | /* create a separate json object for each ES */ | |
2274 | json = json_object_new_object(); | |
2275 | if (detail) | |
2276 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2277 | else | |
2278 | bgp_evpn_es_show_entry(vty, es, json); | |
2279 | /* add ES to the json array */ | |
2280 | if (uj) | |
2281 | json_object_array_add(json_array, json); | |
2282 | } | |
2283 | ||
2284 | /* print the array of json-ESs */ | |
2285 | if (uj) { | |
2286 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2287 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2288 | json_object_free(json_array); | |
2289 | } | |
2290 | } | |
2291 | ||
2292 | /* Display specific ES */ | |
2293 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2294 | { | |
2295 | struct bgp_evpn_es *es; | |
2296 | json_object *json = NULL; | |
2297 | ||
2298 | if (uj) | |
2299 | json = json_object_new_object(); | |
2300 | ||
2301 | es = bgp_evpn_es_find(esi); | |
2302 | if (es) { | |
2303 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2304 | } else { | |
2305 | if (!uj) | |
2306 | vty_out(vty, "ESI not found\n"); | |
2307 | } | |
2308 | ||
2309 | if (uj) { | |
2310 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2311 | json, JSON_C_TO_STRING_PRETTY)); | |
2312 | json_object_free(json); | |
2313 | } | |
2314 | } | |
2315 | ||
c589d847 AK |
2316 | /*****************************************************************************/ |
2317 | /* Ethernet Segment to VRF association - | |
2318 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2319 | * triggers the creation of an ES-VRF entry. | |
2320 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2321 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2322 | * a /32 or host route entry in the dataplane. If the destination of | |
2323 | * the host route is a remote-ES the route is programmed with the | |
2324 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2325 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2326 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2327 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2328 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2329 | * allowing for a faster failover. | |
2330 | * | |
2331 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2332 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2333 | * in that VRF. | |
2334 | */ | |
2335 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2336 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2337 | bool v4_nhg) | |
c589d847 | 2338 | { |
8bcb09a1 AK |
2339 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2340 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2341 | struct listnode *node; |
2342 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2343 | struct nexthop nh; |
2344 | struct zapi_nexthop *api_nh; | |
2345 | struct zapi_nhg api_nhg = {}; | |
2346 | ||
2347 | /* Skip installation of L3-NHG if host routes used */ | |
2348 | if (!nhg_id) | |
2349 | return; | |
c589d847 AK |
2350 | |
2351 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2352 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2353 | es_vrf->bgp_vrf->vrf_id, | |
2354 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2355 | ||
2356 | /* only the gateway ip changes for each NH. rest of the params | |
2357 | * are constant | |
2358 | */ | |
2359 | memset(&nh, 0, sizeof(nh)); | |
2360 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2361 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2362 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2363 | nh.weight = 1; | |
2364 | nh.type = | |
2365 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2366 | ||
2367 | api_nhg.id = nhg_id; | |
c589d847 | 2368 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2369 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2370 | continue; | |
2371 | ||
2372 | /* overwrite the gw */ | |
2373 | if (v4_nhg) | |
2374 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2375 | else | |
2376 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2377 | es_vtep->vtep_ip); | |
2378 | ||
2379 | /* convert to zapi format */ | |
2380 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2381 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2382 | ||
2383 | ++api_nhg.nexthop_num; | |
2384 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2385 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2386 | &es_vtep->vtep_ip, | |
2387 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2388 | } |
2389 | ||
8bcb09a1 AK |
2390 | if (!api_nhg.nexthop_num) |
2391 | return; | |
2392 | ||
2393 | if (api_nhg.nexthop_num > MULTIPATH_NUM) | |
2394 | return; | |
2395 | ||
2396 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); | |
c589d847 AK |
2397 | } |
2398 | ||
8bcb09a1 AK |
2399 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2400 | { | |
2401 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2402 | return false; | |
2403 | ||
2404 | /* Check socket. */ | |
2405 | if (!zclient || zclient->sock < 0) | |
2406 | return false; | |
2407 | ||
2408 | return true; | |
2409 | } | |
2410 | ||
2411 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2412 | { |
8bcb09a1 AK |
2413 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2414 | return; | |
2415 | ||
2416 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2417 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2418 | } | |
2419 | ||
2420 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2421 | bool v4_nhg) | |
2422 | { | |
2423 | struct zapi_nhg api_nhg = {}; | |
2424 | ||
2425 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2426 | ||
2427 | /* Skip installation of L3-NHG if host routes used */ | |
2428 | if (!api_nhg.id) | |
2429 | return; | |
2430 | ||
c589d847 | 2431 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2432 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2433 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2434 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2435 | ||
2436 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2437 | } | |
c589d847 | 2438 | |
8bcb09a1 AK |
2439 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2440 | { | |
2441 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2442 | return; | |
2443 | ||
2444 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2445 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2446 | } |
2447 | ||
2448 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2449 | { | |
2450 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2451 | return; | |
2452 | ||
2453 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2454 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2455 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2456 | es_vrf->nhg_id); | |
2457 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2458 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2459 | /* MAC-IPs can now be installed via the L3NHG */ |
2460 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2461 | } |
2462 | ||
2463 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2464 | { | |
2465 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2466 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2467 | return; | |
2468 | } | |
2469 | ||
2470 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2471 | if (!update) | |
2472 | return; | |
2473 | } else { | |
2474 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2475 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2476 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2477 | es_vrf->nhg_id); | |
2478 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2479 | /* MAC-IPs can now be installed via the L3NHG */ |
2480 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2481 | } |
2482 | ||
2483 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2484 | } | |
2485 | ||
2486 | /* when a VTEP is activated or de-activated against an ES associated | |
2487 | * VRFs' NHG needs to be updated | |
2488 | */ | |
2489 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2490 | { | |
2491 | struct bgp_evpn_es_vrf *es_vrf; | |
2492 | struct listnode *es_vrf_node; | |
2493 | ||
2494 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2495 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2496 | ||
2497 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2498 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2499 | } | |
2500 | ||
2501 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2502 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2503 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2504 | { | |
2505 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2506 | } | |
2507 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2508 | ||
2509 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2510 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2511 | { | |
2512 | /* Initialize the ES-VRF RB tree */ | |
2513 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2514 | } | |
2515 | ||
2516 | /* find the ES-VRF in the per-VRF RB tree */ | |
2517 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2518 | struct bgp *bgp_vrf) | |
2519 | { | |
2520 | struct bgp_evpn_es_vrf es_vrf; | |
2521 | ||
2522 | es_vrf.es = es; | |
2523 | ||
2524 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2525 | } | |
2526 | ||
2527 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2528 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2529 | struct bgp *bgp_vrf) | |
2530 | { | |
2531 | struct bgp_evpn_es_vrf *es_vrf; | |
2532 | ||
2533 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2534 | ||
2535 | es_vrf->es = es; | |
2536 | es_vrf->bgp_vrf = bgp_vrf; | |
2537 | ||
2538 | /* insert into the VRF-ESI rb tree */ | |
2539 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2540 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2541 | return NULL; | |
2542 | } | |
2543 | ||
2544 | /* add to the ES's VRF list */ | |
2545 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2546 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2547 | ||
2548 | /* setup the L3 NHG id for the ES */ | |
2549 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2550 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2551 | ||
c589d847 | 2552 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2553 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2554 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2555 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2556 | ||
36dd4574 AK |
2557 | /* update paths in the VRF that may already be associated with |
2558 | * this destination ES | |
2559 | */ | |
58bff4d1 | 2560 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2561 | |
c589d847 AK |
2562 | return es_vrf; |
2563 | } | |
2564 | ||
2565 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2566 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2567 | { | |
2568 | struct bgp_evpn_es *es = es_vrf->es; | |
2569 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2570 | ||
2571 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2572 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2573 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2574 | ||
2575 | /* Remove the NHG resources */ | |
2576 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2577 | if (es_vrf->nhg_id) | |
2578 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2579 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2580 | if (es_vrf->v6_nhg_id) |
2581 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2582 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2583 | |
2584 | /* remove from the ES's VRF list */ | |
2585 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2586 | ||
2587 | /* remove from the VRF-ESI rb tree */ | |
2588 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2589 | ||
d656e0ae AK |
2590 | /* update paths in the VRF that may already be associated with |
2591 | * this destination ES | |
2592 | */ | |
58bff4d1 | 2593 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2594 | |
c589d847 AK |
2595 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2596 | } | |
2597 | ||
2598 | /* deref and delete if there are no references */ | |
2599 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2600 | { | |
2601 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2602 | ||
2603 | if (!es_vrf) | |
2604 | return; | |
2605 | ||
2606 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2607 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2608 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2609 | es_vrf->bgp_vrf->vrf_id); | |
2610 | ||
2611 | es_evi->es_vrf = NULL; | |
2612 | if (es_vrf->ref_cnt) | |
2613 | --es_vrf->ref_cnt; | |
2614 | ||
2615 | if (!es_vrf->ref_cnt) | |
2616 | bgp_evpn_es_vrf_delete(es_vrf); | |
2617 | } | |
2618 | ||
2619 | /* find or create and reference */ | |
2620 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2621 | { | |
2622 | struct bgp_evpn_es *es = es_evi->es; | |
2623 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2624 | struct bgp *old_bgp_vrf = NULL; | |
2625 | ||
2626 | if (es_vrf) | |
2627 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2628 | ||
2629 | if (old_bgp_vrf == bgp_vrf) | |
2630 | return; | |
2631 | ||
2632 | /* deref the old ES-VRF */ | |
2633 | bgp_evpn_es_vrf_deref(es_evi); | |
2634 | ||
2635 | if (!bgp_vrf) | |
2636 | return; | |
2637 | ||
2638 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2639 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2640 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2641 | ||
2642 | /* find-create the new ES-VRF */ | |
2643 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2644 | if (!es_vrf) | |
2645 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2646 | if (!es_vrf) | |
2647 | return; | |
2648 | ||
2649 | es_evi->es_vrf = es_vrf; | |
2650 | ++es_vrf->ref_cnt; | |
2651 | } | |
2652 | ||
2653 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2654 | * associated ES-EVI entries | |
2655 | */ | |
2656 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2657 | { | |
2658 | struct bgp_evpn_es_evi *es_evi; | |
2659 | ||
2660 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2661 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2662 | ||
2663 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2664 | bgp_evpn_es_vrf_deref(es_evi); | |
2665 | } | |
2666 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2667 | { | |
2668 | struct bgp_evpn_es_evi *es_evi; | |
2669 | ||
2670 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2671 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2672 | ||
2673 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2674 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2675 | } | |
2676 | ||
58bff4d1 AK |
2677 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2678 | * multi-path list. | |
2679 | * 2. If ES-VRF is present - | |
2680 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2681 | * all the PEs attached to the VRF are down) do not install the route | |
2682 | * in zebra. | |
2683 | * - if L3NHG has been activated install the route via that L3NHG | |
2684 | */ | |
2685 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2686 | bool *is_l3nhg_active, | |
2687 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2688 | { |
2689 | struct bgp_evpn_es *es; | |
2690 | struct bgp_evpn_es_vrf *es_vrf; | |
2691 | ||
2692 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2693 | return; |
36dd4574 AK |
2694 | |
2695 | es = bgp_evpn_es_find(esi); | |
2696 | if (!es) | |
58bff4d1 | 2697 | return; |
36dd4574 AK |
2698 | |
2699 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2700 | if (!es_vrf) | |
58bff4d1 AK |
2701 | return; |
2702 | ||
2703 | *use_l3nhg = true; | |
2704 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2705 | *is_l3nhg_active = true; | |
36dd4574 AK |
2706 | if (es_vrf_p) |
2707 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2708 | } |
2709 | ||
6348981a AK |
2710 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2711 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2712 | uint32_t *nhg_p) | |
2713 | { | |
2714 | esi_t *esi; | |
36dd4574 | 2715 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2716 | struct bgp_path_info *parent_pi; |
2717 | struct bgp_node *rn; | |
2718 | struct prefix_evpn *evp; | |
2719 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2720 | bool use_l3nhg = false; |
2721 | bool is_l3nhg_active = false; | |
6348981a AK |
2722 | |
2723 | *nhg_p = 0; | |
2724 | ||
2725 | parent_pi = get_route_parent_evpn(pi); | |
2726 | if (!parent_pi) | |
2727 | return false; | |
2728 | ||
2729 | rn = parent_pi->net; | |
2730 | if (!rn) | |
2731 | return false; | |
2732 | ||
2733 | evp = (struct prefix_evpn *)&rn->p; | |
2734 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2735 | return false; | |
2736 | ||
6348981a AK |
2737 | /* non-es path, use legacy-exploded multipath */ |
2738 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2739 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2740 | return false; | |
2741 | ||
58bff4d1 AK |
2742 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2743 | &es_vrf); | |
2744 | ||
36dd4574 | 2745 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2746 | if (!use_l3nhg) |
36dd4574 AK |
2747 | return false; |
2748 | ||
2749 | /* if the NHG has not been installed we cannot install the route yet, | |
2750 | * return a 0-NHG to indicate that | |
6348981a | 2751 | */ |
58bff4d1 | 2752 | if (!is_l3nhg_active) |
6348981a AK |
2753 | return true; |
2754 | ||
2755 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2756 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2757 | *nhg_p = es_vrf->v6_nhg_id; |
2758 | else | |
2759 | *nhg_p = es_vrf->nhg_id; | |
2760 | ||
2761 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2762 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2763 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2764 | * the NHG associated with the ES. fallback to legacy-exploded |
2765 | * multipath | |
2766 | */ | |
2767 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2768 | sizeof(*esi))) | |
2769 | return false; | |
2770 | } | |
2771 | ||
2772 | return true; | |
2773 | } | |
2774 | ||
229587fb AK |
2775 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2776 | struct bgp_evpn_es_vrf *es_vrf, | |
2777 | json_object *json) | |
2778 | { | |
2779 | struct bgp_evpn_es *es = es_vrf->es; | |
2780 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2781 | ||
2782 | if (json) { | |
2783 | json_object *json_types; | |
2784 | ||
2785 | json_object_string_add(json, "esi", es->esi_str); | |
2786 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2787 | ||
2788 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2789 | json_types = json_object_new_array(); | |
2790 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2791 | json_array_string_add(json_types, "active"); | |
2792 | json_object_object_add(json, "flags", json_types); | |
2793 | } | |
2794 | ||
2795 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2796 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2797 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2798 | } else { | |
2799 | char flags_str[4]; | |
2800 | ||
2801 | flags_str[0] = '\0'; | |
2802 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2803 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2804 | ||
2805 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2806 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2807 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2812 | struct bgp_evpn_es *es) | |
2813 | { | |
2814 | json_object *json = NULL; | |
2815 | struct listnode *es_vrf_node; | |
2816 | struct bgp_evpn_es_vrf *es_vrf; | |
2817 | ||
2818 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2819 | /* create a separate json object for each ES-VRF */ | |
2820 | if (json_array) | |
2821 | json = json_object_new_object(); | |
2822 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2823 | /* add ES-VRF to the json array */ | |
2824 | if (json_array) | |
2825 | json_object_array_add(json_array, json); | |
2826 | } | |
2827 | } | |
2828 | ||
2829 | /* Display all ES VRFs */ | |
2830 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
2831 | { | |
2832 | json_object *json_array = NULL; | |
2833 | ||
2834 | if (uj) { | |
2835 | /* create an array of ESs */ | |
2836 | json_array = json_object_new_array(); | |
2837 | } else { | |
2838 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
2839 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
2840 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
2841 | } | |
2842 | ||
2843 | if (es) { | |
2844 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2845 | } else { | |
2846 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
2847 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2848 | } | |
2849 | ||
2850 | /* print the array of json-ESs */ | |
2851 | if (uj) { | |
2852 | vty_out(vty, "%s\n", | |
2853 | json_object_to_json_string_ext( | |
2854 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2855 | json_object_free(json_array); | |
2856 | } | |
2857 | } | |
2858 | ||
2859 | /* Display specific ES VRF */ | |
2860 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2861 | { | |
2862 | struct bgp_evpn_es *es; | |
2863 | ||
2864 | es = bgp_evpn_es_find(esi); | |
2865 | if (es) { | |
2866 | bgp_evpn_es_vrf_show(vty, uj, es); | |
2867 | } else { | |
2868 | if (!uj) | |
2869 | vty_out(vty, "ESI not found\n"); | |
2870 | } | |
2871 | } | |
2872 | ||
c44ab6f1 AK |
2873 | /*****************************************************************************/ |
2874 | /* Ethernet Segment to EVI association - | |
2875 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
2876 | * (bgpevpn->es_evi_rb_tree). | |
2877 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
2878 | * advertises an EAD-EVI (Type-1 EVPN) route | |
2879 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
2880 | * it. | |
2881 | */ | |
2882 | ||
2883 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
2884 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
2885 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
2886 | * VTEPs for which both routes have been rxed are activated. Activation | |
2887 | * creates a NHG in the parent ES. | |
2888 | */ | |
2889 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
2890 | { | |
2891 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
2892 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
2893 | ||
2894 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
2895 | } | |
2896 | ||
2897 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
2898 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2899 | { | |
2900 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2901 | ||
2902 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
2903 | ||
2904 | evi_vtep->es_evi = es_evi; | |
2905 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
2906 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
2907 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2908 | ||
2909 | return evi_vtep; | |
2910 | } | |
2911 | ||
2912 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2913 | { | |
2914 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
2915 | ||
2916 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
2917 | /* as long as there is some reference we can't free it */ | |
2918 | return; | |
2919 | ||
2920 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2921 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
2922 | } | |
2923 | ||
2924 | /* check if VTEP is already part of the list */ | |
2925 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
2926 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2927 | { | |
2928 | struct listnode *node = NULL; | |
2929 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2930 | ||
2931 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
2932 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
2933 | return evi_vtep; | |
2934 | } | |
2935 | return NULL; | |
2936 | } | |
2937 | ||
2938 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
2939 | * EAD-per-EVI routes are rxed from it. | |
2940 | */ | |
2941 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
2942 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2943 | { | |
2944 | bool old_active; | |
2945 | bool new_active; | |
fe8293c3 | 2946 | uint32_t ead_activity_flags; |
c44ab6f1 AK |
2947 | |
2948 | old_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2949 | ||
fe8293c3 AK |
2950 | if (bgp_mh_info->ead_evi_rx) |
2951 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
2952 | * before it can be activated. | |
2953 | */ | |
2954 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
2955 | else | |
2956 | /* EAD-per-ES is sufficent to activate the PE */ | |
2957 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
2958 | ||
2959 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
2960 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
2961 | else | |
2962 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2963 | ||
2964 | new_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2965 | ||
2966 | if (old_active == new_active) | |
2967 | return; | |
2968 | ||
2969 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2970 | zlog_debug("es %s evi %u vtep %pI4 %s", |
2971 | evi_vtep->es_evi->es->esi_str, | |
2972 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2973 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
2974 | |
2975 | /* add VTEP to parent es */ | |
2976 | if (new_active) { | |
2977 | struct bgp_evpn_es_vtep *es_vtep; | |
2978 | ||
2979 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
2980 | evi_vtep->vtep_ip, false /*esr*/, |
2981 | 0, 0); | |
c44ab6f1 AK |
2982 | evi_vtep->es_vtep = es_vtep; |
2983 | } else { | |
2984 | if (evi_vtep->es_vtep) { | |
2985 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
2986 | false /*esr*/); | |
2987 | evi_vtep->es_vtep = NULL; | |
2988 | } | |
2989 | } | |
2990 | /* queue up the parent es for background consistency checks */ | |
2991 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
2992 | } | |
2993 | ||
2994 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
2995 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
2996 | bool ead_es) | |
2997 | { | |
2998 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2999 | ||
3000 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3001 | ||
3002 | if (!evi_vtep) | |
3003 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3004 | ||
3005 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3006 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3007 | evi_vtep->es_evi->es->esi_str, | |
3008 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3009 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3010 | |
3011 | if (ead_es) | |
3012 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3013 | else | |
3014 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3015 | ||
3016 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3017 | } | |
3018 | ||
3019 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3020 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3021 | bool ead_es) | |
3022 | { | |
3023 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3024 | ||
3025 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3026 | if (!evi_vtep) | |
3027 | return; | |
3028 | ||
3029 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3030 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3031 | evi_vtep->es_evi->es->esi_str, | |
3032 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3033 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3034 | |
3035 | if (ead_es) | |
3036 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3037 | else | |
3038 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3039 | ||
3040 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3041 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3042 | } | |
3043 | ||
3044 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3045 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3046 | const struct bgp_evpn_es_evi *es_evi2) | |
3047 | { | |
3048 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3049 | } | |
3050 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3051 | ||
3052 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3053 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3054 | struct bgpevpn *vpn) | |
3055 | { | |
3056 | struct bgp_evpn_es_evi es_evi; | |
3057 | ||
3058 | es_evi.es = es; | |
3059 | ||
3060 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3061 | } | |
3062 | ||
3063 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3064 | * tables. | |
3065 | */ | |
3066 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3067 | struct bgpevpn *vpn) | |
3068 | { | |
3069 | struct bgp_evpn_es_evi *es_evi; | |
3070 | ||
3071 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3072 | ||
3073 | es_evi->es = es; | |
3074 | es_evi->vpn = vpn; | |
3075 | ||
3076 | /* Initialise the VTEP list */ | |
3077 | es_evi->es_evi_vtep_list = list_new(); | |
3078 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3079 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3080 | ||
3081 | /* insert into the VNI-ESI rb tree */ | |
3082 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3083 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3084 | return NULL; | |
3085 | } | |
3086 | ||
3087 | /* add to the ES's VNI list */ | |
3088 | listnode_init(&es_evi->es_listnode, es_evi); | |
3089 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3090 | ||
c589d847 AK |
3091 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3092 | ||
c44ab6f1 AK |
3093 | return es_evi; |
3094 | } | |
3095 | ||
3096 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3097 | * up the memory. | |
3098 | */ | |
3099 | static void bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
3100 | { | |
3101 | struct bgp_evpn_es *es = es_evi->es; | |
3102 | struct bgpevpn *vpn = es_evi->vpn; | |
3103 | ||
3104 | /* cannot free the element as long as there is a local or remote | |
3105 | * reference | |
3106 | */ | |
3107 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
3108 | return; | |
3109 | ||
c589d847 AK |
3110 | bgp_evpn_es_vrf_deref(es_evi); |
3111 | ||
c44ab6f1 AK |
3112 | /* remove from the ES's VNI list */ |
3113 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3114 | ||
3115 | /* remove from the VNI-ESI rb tree */ | |
3116 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3117 | ||
3118 | /* free the VTEP list */ | |
3119 | list_delete(&es_evi->es_evi_vtep_list); | |
3120 | ||
3121 | /* remove from the VNI-ESI rb tree */ | |
3122 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3123 | } | |
3124 | ||
3125 | /* init local info associated with the ES-EVI */ | |
3126 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3127 | { | |
3128 | struct bgpevpn *vpn = es_evi->vpn; | |
3129 | ||
3130 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3131 | return; | |
3132 | ||
3133 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3134 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3135 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3136 | } | |
3137 | ||
3138 | /* clear any local info associated with the ES-EVI */ | |
3139 | static void bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
3140 | { | |
3141 | struct bgpevpn *vpn = es_evi->vpn; | |
3142 | ||
3143 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3144 | return; | |
3145 | ||
3146 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3147 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3148 | ||
3149 | bgp_evpn_es_evi_free(es_evi); | |
3150 | } | |
3151 | ||
3152 | /* eval remote info associated with the ES */ | |
3153 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3154 | { | |
3155 | struct bgp_evpn_es *es = es_evi->es; | |
3156 | ||
3157 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3158 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3159 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3160 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3161 | ++es->remote_es_evi_cnt; | |
3162 | /* set remote on the parent es */ | |
3163 | bgp_evpn_es_remote_info_re_eval(es); | |
3164 | } | |
3165 | } else { | |
3166 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3167 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3168 | if (es->remote_es_evi_cnt) | |
3169 | --es->remote_es_evi_cnt; | |
3170 | bgp_evpn_es_evi_free(es_evi); | |
3171 | /* check if "remote" can be cleared from the | |
3172 | * parent es. | |
3173 | */ | |
3174 | bgp_evpn_es_remote_info_re_eval(es); | |
3175 | } | |
3176 | } | |
3177 | } | |
3178 | ||
3179 | static void bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
3180 | { | |
3181 | struct prefix_evpn p; | |
3182 | struct bgp_evpn_es *es = es_evi->es; | |
3183 | struct bgp *bgp; | |
3184 | ||
3185 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3186 | return; | |
3187 | ||
3188 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3189 | zlog_debug("del local es %s evi %u", | |
3190 | es_evi->es->esi_str, | |
3191 | es_evi->vpn->vni); | |
3192 | ||
3193 | bgp = bgp_get_evpn(); | |
3194 | ||
3195 | if (bgp) { | |
3196 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3197 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3198 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3199 | &es->esi, es->originator_ip); | |
3200 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3201 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3202 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3203 | bgp->vrf_id, es->esi_str, | |
3204 | es_evi->vpn->vni); | |
3205 | } | |
3206 | ||
3207 | /* withdraw and delete EAD-EVI */ | |
3208 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3209 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3210 | &es->esi, es->originator_ip); | |
3211 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3212 | es, es_evi->vpn, &p)) | |
3213 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3214 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3215 | bgp->vrf_id, es->esi_str, | |
3216 | es_evi->vpn->vni); | |
3217 | } | |
3218 | } | |
3219 | ||
3220 | bgp_evpn_es_evi_local_info_clear(es_evi); | |
185fb14a | 3221 | |
c44ab6f1 AK |
3222 | } |
3223 | ||
3224 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3225 | { | |
3226 | struct bgpevpn *vpn; | |
3227 | struct bgp_evpn_es *es; | |
3228 | struct bgp_evpn_es_evi *es_evi; | |
3229 | char buf[ESI_STR_LEN]; | |
3230 | ||
3231 | es = bgp_evpn_es_find(esi); | |
3232 | if (!es) { | |
3233 | flog_err( | |
3234 | EC_BGP_ES_CREATE, | |
3235 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3236 | bgp->vrf_id, vni, | |
3237 | esi_to_str(esi, buf, sizeof(buf))); | |
3238 | return -1; | |
3239 | } | |
3240 | ||
3241 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3242 | if (!vpn) { | |
3243 | flog_err( | |
3244 | EC_BGP_ES_CREATE, | |
3245 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3246 | bgp->vrf_id, vni, es->esi_str); | |
3247 | return -1; | |
3248 | } | |
3249 | ||
3250 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3251 | if (!es_evi) { | |
3252 | flog_err( | |
3253 | EC_BGP_ES_CREATE, | |
3254 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3255 | bgp->vrf_id, vni, es->esi_str); | |
3256 | return -1; | |
3257 | } | |
3258 | ||
3259 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3260 | return 0; | |
3261 | } | |
3262 | ||
3263 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3264 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3265 | { | |
3266 | struct bgpevpn *vpn; | |
3267 | struct prefix_evpn p; | |
3268 | struct bgp_evpn_es *es; | |
3269 | struct bgp_evpn_es_evi *es_evi; | |
3270 | char buf[ESI_STR_LEN]; | |
3271 | ||
3272 | es = bgp_evpn_es_find(esi); | |
3273 | if (!es) { | |
3274 | flog_err( | |
3275 | EC_BGP_ES_CREATE, | |
3276 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3277 | bgp->vrf_id, vni, | |
3278 | esi_to_str(esi, buf, sizeof(buf))); | |
3279 | return -1; | |
3280 | } | |
3281 | ||
3282 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3283 | if (!vpn) { | |
3284 | flog_err( | |
3285 | EC_BGP_ES_CREATE, | |
3286 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3287 | bgp->vrf_id, vni, es->esi_str); | |
3288 | return -1; | |
3289 | } | |
3290 | ||
3291 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3292 | zlog_debug("add local es %s evi %u", | |
3293 | es->esi_str, vni); | |
3294 | ||
3295 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3296 | ||
3297 | if (es_evi) { | |
3298 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3299 | /* dup */ | |
3300 | return 0; | |
3301 | } else { | |
3302 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3303 | if (!es_evi) | |
3304 | return -1; | |
3305 | } | |
3306 | ||
3307 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3308 | ||
3309 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3310 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3311 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3312 | es->originator_ip); | |
c44ab6f1 AK |
3313 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3314 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3315 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3316 | bgp->vrf_id, es->esi_str, vni); | |
3317 | } | |
3318 | ||
3319 | /* update EAD-ES */ | |
3320 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3321 | &es->esi, es->originator_ip); | |
74be8313 | 3322 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3323 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3324 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3325 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3326 | bgp->vrf_id, es->esi_str, vni); | |
3327 | } | |
3328 | ||
3329 | return 0; | |
3330 | } | |
3331 | ||
3332 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3333 | * ES-EVI is implicity created on first VTEP's reference. | |
3334 | */ | |
3335 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3336 | const struct prefix_evpn *p) | |
3337 | { | |
3338 | char buf[ESI_STR_LEN]; | |
3339 | struct bgp_evpn_es *es; | |
3340 | struct bgp_evpn_es_evi *es_evi; | |
3341 | bool ead_es; | |
3342 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3343 | ||
3344 | if (!vpn) | |
3345 | /* local EAD-ES need not be sent back to zebra */ | |
3346 | return 0; | |
3347 | ||
3348 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3349 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3350 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3351 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3352 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3353 | |
3354 | es = bgp_evpn_es_find(esi); | |
3355 | if (!es) { | |
3356 | es = bgp_evpn_es_new(bgp, esi); | |
3357 | if (!es) { | |
3358 | flog_err(EC_BGP_ES_CREATE, | |
3359 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3360 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3361 | return -1; | |
3362 | } | |
3363 | } | |
3364 | ||
3365 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3366 | if (!es_evi) { | |
3367 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3368 | if (!es_evi) { | |
45a859f1 | 3369 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3370 | return -1; |
3371 | } | |
3372 | } | |
3373 | ||
3374 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3375 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3376 | ead_es); | |
3377 | ||
3378 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3379 | return 0; | |
3380 | } | |
3381 | ||
3382 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3383 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3384 | */ | |
3385 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3386 | const struct prefix_evpn *p) | |
3387 | { | |
3388 | char buf[ESI_STR_LEN]; | |
3389 | struct bgp_evpn_es *es; | |
3390 | struct bgp_evpn_es_evi *es_evi; | |
3391 | bool ead_es; | |
3392 | ||
3393 | if (!vpn) | |
3394 | /* local EAD-ES need not be sent back to zebra */ | |
3395 | return 0; | |
3396 | ||
3397 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3398 | zlog_debug( |
3399 | "del remote %s es %s evi %u vtep %pI4", | |
3400 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3401 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3402 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3403 | |
3404 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3405 | if (!es) { |
3406 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3407 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3408 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3409 | : "ead-evi", | |
3410 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3411 | sizeof(buf)), | |
3412 | vpn->vni, | |
3413 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3414 | return 0; |
2eef4f20 | 3415 | } |
c44ab6f1 | 3416 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3417 | if (!es_evi) { |
3418 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3419 | zlog_debug( | |
3420 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3421 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3422 | : "ead-evi", | |
3423 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3424 | sizeof(buf)), | |
3425 | vpn->vni, | |
3426 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3427 | return 0; |
2eef4f20 | 3428 | } |
c44ab6f1 AK |
3429 | |
3430 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3431 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3432 | ead_es); | |
3433 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3434 | return 0; | |
3435 | } | |
3436 | ||
3437 | /* Initialize the ES tables maintained per-L2_VNI */ | |
3438 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3439 | { | |
3440 | /* Initialize the ES-EVI RB tree */ | |
3441 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3442 | ||
3443 | /* Initialize the local list maintained for quick walks by type */ | |
3444 | vpn->local_es_evi_list = list_new(); | |
3445 | listset_app_node_mem(vpn->local_es_evi_list); | |
3446 | } | |
3447 | ||
3448 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3449 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3450 | { | |
3451 | struct bgp_evpn_es_evi *es_evi; | |
3452 | struct bgp_evpn_es_evi *es_evi_next; | |
3453 | ||
3454 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3455 | &vpn->es_evi_rb_tree, es_evi_next) { | |
3456 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3457 | } | |
3458 | ||
3459 | list_delete(&vpn->local_es_evi_list); | |
3460 | } | |
3461 | ||
3462 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3463 | struct bgp_evpn_es_evi *es_evi, |
3464 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3465 | { |
3466 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3467 | struct listnode *node; | |
3468 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3469 | bool first = true; | |
ec779825 | 3470 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3471 | |
3472 | vtep_str[0] = '\0'; | |
3473 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3474 | vtep_flag_str[0] = '\0'; | |
3475 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3476 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3477 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3478 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3479 | |
9e0c2fd1 AK |
3480 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3481 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3482 | if (first) | |
c44ab6f1 | 3483 | first = false; |
9e0c2fd1 AK |
3484 | else |
3485 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3486 | strlcat(vtep_str, |
ec779825 AK |
3487 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3488 | sizeof(ip_buf)), | |
23d0a753 | 3489 | vtep_str_size); |
9e0c2fd1 AK |
3490 | strlcat(vtep_str, "(", vtep_str_size); |
3491 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3492 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3493 | } |
3494 | ||
3495 | return vtep_str; | |
3496 | } | |
3497 | ||
3498 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3499 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3500 | { | |
3501 | json_object *json_vtep_entry; | |
3502 | json_object *json_flags; | |
ec779825 | 3503 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3504 | |
3505 | json_vtep_entry = json_object_new_object(); | |
3506 | ||
ec779825 AK |
3507 | json_object_string_add( |
3508 | json_vtep_entry, "vtep_ip", | |
3509 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3510 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3511 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3512 | json_flags = json_object_new_array(); | |
3513 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3514 | json_array_string_add(json_flags, "ead-per-es"); | |
3515 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3516 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3517 | json_object_object_add(json_vtep_entry, |
3518 | "flags", json_flags); | |
3519 | } | |
3520 | ||
3521 | json_object_array_add(json_vteps, | |
3522 | json_vtep_entry); | |
3523 | } | |
3524 | ||
3525 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3526 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3527 | { | |
3528 | struct listnode *node; | |
3529 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3530 | ||
3531 | if (json) { | |
3532 | json_object *json_vteps; | |
3533 | json_object *json_types; | |
3534 | ||
3535 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3536 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3537 | ||
3538 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3539 | BGP_EVPNES_EVI_REMOTE)) { | |
3540 | json_types = json_object_new_array(); | |
3541 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3542 | json_array_string_add(json_types, "local"); | |
3543 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3544 | json_array_string_add(json_types, "remote"); | |
3545 | json_object_object_add(json, "type", json_types); | |
3546 | } | |
3547 | ||
3548 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3549 | json_vteps = json_object_new_array(); | |
3550 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3551 | node, evi_vtep)) { | |
3552 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3553 | evi_vtep); | |
3554 | } | |
3555 | json_object_object_add(json, "vteps", json_vteps); | |
3556 | } | |
3557 | } else { | |
3558 | char type_str[4]; | |
3559 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3560 | ||
3561 | type_str[0] = '\0'; | |
3562 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3563 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3564 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3565 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3566 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3567 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3568 | |
9e0c2fd1 | 3569 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3570 | |
3571 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3572 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3573 | type_str, vtep_str); | |
3574 | } | |
3575 | } | |
3576 | ||
3577 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3578 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3579 | { | |
3580 | if (json) { | |
3581 | json_object *json_flags; | |
3582 | ||
3583 | /* Add the "brief" info first */ | |
3584 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3585 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3586 | json_flags = json_object_new_array(); | |
3587 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3588 | json_object_object_add(json, "flags", json_flags); | |
3589 | } | |
3590 | } else { | |
3591 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3592 | char type_str[4]; | |
3593 | ||
3594 | type_str[0] = '\0'; | |
3595 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3596 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3597 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3598 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3599 | |
9e0c2fd1 | 3600 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3601 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3602 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3603 | |
3604 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3605 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3606 | vty_out(vty, " Type: %s\n", type_str); | |
3607 | vty_out(vty, " Inconsistencies: %s\n", | |
3608 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3609 | "es-vtep-mismatch":"-"); | |
3610 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3611 | vty_out(vty, "\n"); | |
3612 | } | |
3613 | } | |
3614 | ||
3615 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3616 | json_object *json_array, bool detail) | |
3617 | { | |
3618 | struct bgp_evpn_es_evi *es_evi; | |
3619 | json_object *json = NULL; | |
3620 | ||
3621 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3622 | if (json_array) | |
3623 | /* create a separate json object for each ES */ | |
3624 | json = json_object_new_object(); | |
3625 | if (detail) | |
3626 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3627 | else | |
3628 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3629 | /* add ES to the json array */ | |
3630 | if (json_array) | |
3631 | json_object_array_add(json_array, json); | |
3632 | } | |
3633 | } | |
3634 | ||
3635 | struct es_evi_show_ctx { | |
3636 | struct vty *vty; | |
3637 | json_object *json; | |
3638 | int detail; | |
3639 | }; | |
3640 | ||
3641 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3642 | void *ctxt) | |
3643 | { | |
3644 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3645 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3646 | ||
3647 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3648 | } | |
3649 | ||
3650 | /* Display all ES EVIs */ | |
3651 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3652 | { | |
3653 | json_object *json_array = NULL; | |
3654 | struct es_evi_show_ctx wctx; | |
3655 | struct bgp *bgp; | |
3656 | ||
3657 | if (uj) { | |
3658 | /* create an array of ES-EVIs */ | |
3659 | json_array = json_object_new_array(); | |
3660 | } | |
3661 | ||
3662 | wctx.vty = vty; | |
3663 | wctx.json = json_array; | |
3664 | wctx.detail = detail; | |
3665 | ||
3666 | bgp = bgp_get_evpn(); | |
3667 | ||
3668 | if (!json_array && !detail) { | |
3669 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3670 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3671 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3672 | "VNI", "ESI", "Flags", "VTEPs"); | |
3673 | } | |
3674 | ||
3675 | if (bgp) | |
3676 | hash_iterate(bgp->vnihash, | |
3677 | (void (*)(struct hash_bucket *, | |
3678 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3679 | &wctx); | |
3680 | if (uj) { | |
3681 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3682 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3683 | json_object_free(json_array); | |
3684 | } | |
3685 | } | |
3686 | ||
3687 | /* Display specific ES EVI */ | |
3688 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3689 | bool uj, bool detail) | |
3690 | { | |
3691 | struct bgpevpn *vpn = NULL; | |
3692 | json_object *json_array = NULL; | |
3693 | struct bgp *bgp; | |
3694 | ||
3695 | if (uj) { | |
3696 | /* create an array of ES-EVIs */ | |
3697 | json_array = json_object_new_array(); | |
3698 | } | |
3699 | ||
3700 | bgp = bgp_get_evpn(); | |
3701 | if (bgp) | |
3702 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3703 | ||
3704 | if (vpn) { | |
3705 | if (!json_array && !detail) { | |
3706 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3707 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3708 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3709 | "VNI", "ESI", "Flags", "VTEPs"); | |
3710 | } | |
3711 | ||
3712 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3713 | } else { | |
3714 | if (!uj) | |
3715 | vty_out(vty, "VNI not found\n"); | |
3716 | } | |
3717 | ||
3718 | if (uj) { | |
3719 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3720 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3721 | json_object_free(json_array); | |
3722 | } | |
3723 | } | |
3724 | ||
3725 | /***************************************************************************** | |
3726 | * Ethernet Segment Consistency checks | |
3727 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3728 | * an inconsistency is detected it is simply logged (and displayed via | |
3729 | * show commands) at this point. A more drastic action can be executed (based | |
3730 | * on user config) in the future. | |
3731 | */ | |
8fc2ffb3 AK |
3732 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3733 | { | |
3734 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3735 | return; | |
3736 | ||
3737 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3738 | zlog_debug("periodic consistency checking started"); | |
3739 | ||
3740 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3741 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3742 | &bgp_mh_info->t_cons_check); | |
3743 | } | |
3744 | ||
c44ab6f1 AK |
3745 | /* queue up the es for background consistency checks */ |
3746 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3747 | { | |
3748 | if (!bgp_mh_info->consistency_checking) | |
3749 | /* consistency checking is not enabled */ | |
3750 | return; | |
3751 | ||
3752 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3753 | /* already queued for consistency checking */ | |
3754 | return; | |
3755 | ||
8fc2ffb3 AK |
3756 | /* start the periodic timer for consistency checks if it is not |
3757 | * already running */ | |
3758 | bgp_evpn_es_cons_checks_timer_start(); | |
3759 | ||
c44ab6f1 AK |
3760 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3761 | listnode_init(&es->pend_es_listnode, es); | |
3762 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3763 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3764 | &es->pend_es_listnode); | |
3765 | } | |
3766 | ||
3767 | /* pull the ES from the consistency check list */ | |
3768 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3769 | { | |
3770 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3771 | return; | |
3772 | ||
3773 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3774 | list_delete_node(bgp_mh_info->pend_es_list, | |
3775 | &es->pend_es_listnode); | |
3776 | } | |
3777 | ||
3778 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3779 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3780 | struct bgp_evpn_es_evi *es_evi) | |
3781 | { | |
3782 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3783 | struct listnode *node; | |
3784 | uint32_t vtep_cnt = 0; | |
3785 | ||
3786 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3787 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3788 | ++vtep_cnt; | |
3789 | } | |
3790 | ||
3791 | return vtep_cnt; | |
3792 | } | |
3793 | ||
3794 | /* Number of active VTEPs associated with the ES */ | |
3795 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3796 | { | |
3797 | struct listnode *node; | |
3798 | uint32_t vtep_cnt = 0; | |
3799 | struct bgp_evpn_es_vtep *es_vtep; | |
3800 | ||
3801 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
3802 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3803 | ++vtep_cnt; | |
3804 | } | |
3805 | ||
3806 | return vtep_cnt; | |
3807 | } | |
3808 | ||
3809 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
3810 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
3811 | { | |
3812 | struct listnode *node; | |
3813 | struct bgp_evpn_es_vtep *next_es_vtep; | |
3814 | ||
3815 | if (es_vtep) | |
3816 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
3817 | else | |
3818 | node = listhead(es->es_vtep_list); | |
3819 | ||
3820 | for (; node; node = listnextnode_unchecked(node)) { | |
3821 | next_es_vtep = listgetdata(node); | |
3822 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3823 | return next_es_vtep; | |
3824 | } | |
3825 | ||
3826 | return NULL; | |
3827 | } | |
3828 | ||
3829 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
3830 | struct bgp_evpn_es_evi *es_evi, | |
3831 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3832 | { | |
3833 | struct listnode *node; | |
3834 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
3835 | ||
3836 | if (evi_vtep) | |
3837 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
3838 | else | |
3839 | node = listhead(es_evi->es_evi_vtep_list); | |
3840 | ||
3841 | for (; node; node = listnextnode_unchecked(node)) { | |
3842 | next_evi_vtep = listgetdata(node); | |
3843 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3844 | return next_evi_vtep; | |
3845 | } | |
3846 | ||
3847 | return NULL; | |
3848 | } | |
3849 | ||
3850 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
3851 | { | |
3852 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
3853 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3854 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
3855 | es_evi->es->esi_str, | |
3856 | es_evi->vpn->vni); | |
3857 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3858 | ||
3859 | /* update parent ES with the incosistency setting */ | |
3860 | if (!es_evi->es->incons_evi_vtep_cnt && | |
3861 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3862 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
3863 | es_evi->es->esi_str); | |
3864 | ++es_evi->es->incons_evi_vtep_cnt; | |
3865 | SET_FLAG(es_evi->es->inconsistencies, | |
3866 | BGP_EVPNES_INCONS_VTEP_LIST); | |
3867 | } | |
3868 | } | |
3869 | ||
3870 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
3871 | { | |
3872 | int proc_cnt = 0; | |
3873 | int es_active_vtep_cnt; | |
3874 | int evi_active_vtep_cnt; | |
3875 | struct bgp_evpn_es_evi *es_evi; | |
3876 | struct listnode *evi_node; | |
3877 | struct bgp_evpn_es_vtep *es_vtep; | |
3878 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3879 | ||
3880 | /* reset the inconsistencies and re-evaluate */ | |
3881 | es->incons_evi_vtep_cnt = 0; | |
3882 | es->inconsistencies = 0; | |
3883 | ||
3884 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
3885 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
3886 | evi_node, es_evi)) { | |
3887 | ++proc_cnt; | |
3888 | ||
3889 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
3890 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3891 | ||
3892 | evi_active_vtep_cnt = | |
3893 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
3894 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
3895 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3896 | continue; | |
3897 | } | |
3898 | ||
3899 | if (!es_active_vtep_cnt) | |
3900 | continue; | |
3901 | ||
3902 | es_vtep = NULL; | |
3903 | evi_vtep = NULL; | |
3904 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
3905 | es, es_vtep))) { | |
3906 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
3907 | evi_vtep); | |
3908 | if (!evi_vtep) { | |
3909 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3910 | break; | |
3911 | } | |
3912 | if (es_vtep->vtep_ip.s_addr != | |
3913 | evi_vtep->vtep_ip.s_addr) { | |
3914 | /* inconsistency detected; set it and move | |
3915 | * to the next evi | |
3916 | */ | |
3917 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3918 | break; | |
3919 | } | |
3920 | } | |
3921 | } | |
3922 | ||
3923 | return proc_cnt; | |
3924 | } | |
3925 | ||
3926 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
3927 | { | |
3928 | int proc_cnt = 0; | |
3929 | int es_cnt = 0; | |
3930 | struct listnode *node; | |
3931 | struct listnode *nextnode; | |
3932 | struct bgp_evpn_es *es; | |
3933 | ||
3934 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
3935 | node, nextnode, es)) { | |
3936 | ++es_cnt; | |
3937 | ++proc_cnt; | |
3938 | /* run consistency checks on the ES and remove it from the | |
3939 | * pending list | |
3940 | */ | |
3941 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
3942 | bgp_evpn_es_cons_checks_pend_del(es); | |
3943 | if (proc_cnt > 500) | |
3944 | break; | |
3945 | } | |
3946 | ||
3947 | /* restart the timer */ | |
3948 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3949 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3950 | &bgp_mh_info->t_cons_check); | |
3951 | ||
3952 | return 0; | |
3953 | } | |
3954 | ||
3955 | /*****************************************************************************/ | |
3956 | void bgp_evpn_mh_init(void) | |
3957 | { | |
3958 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
3959 | ||
3960 | /* setup ES tables */ | |
3961 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
3962 | /* local ES list */ | |
3963 | bgp_mh_info->local_es_list = list_new(); | |
3964 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
3965 | /* list of ESs with pending processing */ | |
3966 | bgp_mh_info->pend_es_list = list_new(); | |
3967 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
3968 | ||
fe8293c3 AK |
3969 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
3970 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
3971 | ||
c44ab6f1 AK |
3972 | /* config knobs - XXX add cli to control it */ |
3973 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
3974 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
3975 | bgp_mh_info->install_l3nhg = false; |
3976 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 3977 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
c44ab6f1 | 3978 | |
c44ab6f1 AK |
3979 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
3980 | } | |
3981 | ||
3982 | void bgp_evpn_mh_finish(void) | |
3983 | { | |
3984 | struct bgp_evpn_es *es; | |
3985 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 3986 | |
45a859f1 AK |
3987 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
3988 | zlog_debug("evpn mh finish"); | |
3989 | ||
3990 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
3991 | es_next) { | |
3992 | bgp_evpn_es_local_info_clear(es); | |
c44ab6f1 | 3993 | } |
8fc2ffb3 AK |
3994 | if (bgp_mh_info->t_cons_check) |
3995 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
3996 | list_delete(&bgp_mh_info->local_es_list); |
3997 | list_delete(&bgp_mh_info->pend_es_list); | |
3998 | ||
3999 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4000 | } | |
acd1d9bc AD |
4001 | |
4002 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4003 | void bgp_evpn_switch_ead_evi_rx(void) | |
4004 | { | |
4005 | struct bgp *bgp; | |
4006 | struct bgp_evpn_es *es; | |
4007 | struct bgp_evpn_es_evi *es_evi; | |
4008 | struct listnode *evi_node = NULL; | |
4009 | struct listnode *evi_next = NULL; | |
4010 | struct bgp_evpn_es_evi_vtep *vtep; | |
4011 | struct listnode *vtep_node = NULL; | |
4012 | struct listnode *vtep_next = NULL; | |
4013 | ||
4014 | bgp = bgp_get_evpn(); | |
4015 | if (!bgp) | |
4016 | return; | |
4017 | ||
4018 | /* | |
4019 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4020 | * is active. | |
4021 | */ | |
4022 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4023 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4024 | continue; | |
4025 | ||
4026 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4027 | es_evi)) { | |
4028 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4029 | continue; | |
4030 | ||
4031 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4032 | vtep_node, vtep_next, vtep)) | |
4033 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4034 | } | |
4035 | } | |
4036 | } |