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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); | |
72 | static void bgp_evpn_es_path_all_update(struct bgp_evpn_es_vtep *es_vtep, | |
73 | bool active); | |
c44ab6f1 AK |
74 | |
75 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
76 | ||
77 | /****************************************************************************** | |
78 | * per-ES (Ethernet Segment) routing table | |
79 | * | |
80 | * Following routes are added to the ES's routing table - | |
81 | * 1. Local and remote ESR (Type-4) | |
82 | * 2. Local EAD-per-ES (Type-1). | |
83 | * | |
84 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
85 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
86 | * being added to same ES). | |
87 | * | |
88 | * Note the following routes go into the VNI routing table (instead of the | |
89 | * ES routing table) - | |
90 | * 1. Remote EAD-per-ES | |
91 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 92 | */ |
185fb14a | 93 | |
c44ab6f1 AK |
94 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
95 | * installed in the ES's routing table. | |
185fb14a | 96 | */ |
c44ab6f1 | 97 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
98 | struct bgp_evpn_es *es, |
99 | struct bgp_dest *dest) | |
185fb14a AK |
100 | { |
101 | int ret = 0; | |
102 | afi_t afi = AFI_L2VPN; | |
103 | safi_t safi = SAFI_EVPN; | |
104 | struct bgp_path_info *old_select; /* old best */ | |
105 | struct bgp_path_info *new_select; /* new best */ | |
106 | struct bgp_path_info_pair old_and_new; | |
107 | ||
108 | /* Compute the best path. */ | |
09319b4e DS |
109 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
110 | afi, safi); | |
185fb14a AK |
111 | old_select = old_and_new.old; |
112 | new_select = old_and_new.new; | |
113 | ||
114 | /* | |
115 | * If the best path hasn't changed - see if something needs to be | |
116 | * updated | |
117 | */ | |
118 | if (old_select && old_select == new_select | |
09319b4e DS |
119 | && old_select->type == ZEBRA_ROUTE_BGP |
120 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
121 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
122 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
123 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 124 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
125 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
126 | true /*esr*/, | |
127 | old_select->attr->df_alg, | |
128 | old_select->attr->df_pref); | |
185fb14a AK |
129 | } |
130 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 131 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
132 | return ret; |
133 | } | |
134 | ||
135 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 136 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 137 | |
c44ab6f1 | 138 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
139 | * into the zebra RIB. |
140 | */ | |
141 | if (old_select || new_select) | |
09319b4e | 142 | bgp_bump_version(dest); |
185fb14a AK |
143 | |
144 | if (old_select) | |
09319b4e | 145 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 146 | if (new_select) { |
09319b4e DS |
147 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
148 | bgp_path_info_unset_flag(dest, new_select, | |
149 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
150 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
151 | } | |
152 | ||
153 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 154 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
155 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
156 | true /*esr */, new_select->attr->df_alg, | |
157 | new_select->attr->df_pref); | |
185fb14a AK |
158 | } else { |
159 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
160 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
161 | bgp_evpn_es_vtep_del( | |
162 | bgp, es, old_select->attr->nexthop, | |
163 | true /*esr*/); | |
185fb14a AK |
164 | } |
165 | ||
166 | /* Clear any route change flags. */ | |
09319b4e | 167 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
168 | |
169 | /* Reap old select bgp_path_info, if it has been removed */ | |
170 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 171 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
172 | |
173 | return ret; | |
174 | } | |
175 | ||
c44ab6f1 AK |
176 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
177 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
178 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
179 | struct bgp_path_info *parent_pi) | |
180 | { | |
181 | int ret = 0; | |
09319b4e | 182 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
183 | struct bgp_path_info *pi = NULL; |
184 | struct attr *attr_new = NULL; | |
185 | ||
186 | /* Create (or fetch) route within the VNI. | |
187 | * NOTE: There is no RD here. | |
188 | */ | |
09319b4e | 189 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
190 | |
191 | /* Check if route entry is already present. */ | |
09319b4e | 192 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
193 | if (pi->extra |
194 | && (struct bgp_path_info *)pi->extra->parent == | |
195 | parent_pi) | |
196 | break; | |
197 | ||
198 | if (!pi) { | |
199 | /* Add (or update) attribute to hash. */ | |
200 | attr_new = bgp_attr_intern(parent_pi->attr); | |
201 | ||
202 | /* Create new route with its attribute. */ | |
203 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 204 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
205 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
206 | bgp_path_info_extra_get(pi); | |
207 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
208 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
209 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
210 | } else { |
211 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
212 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 213 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
214 | return 0; |
215 | } | |
216 | /* The attribute has changed. */ | |
217 | /* Add (or update) attribute to hash. */ | |
218 | attr_new = bgp_attr_intern(parent_pi->attr); | |
219 | ||
220 | /* Restore route, if needed. */ | |
221 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 222 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
223 | |
224 | /* Mark if nexthop has changed. */ | |
225 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
226 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
227 | ||
228 | /* Unintern existing, set to new. */ | |
229 | bgp_attr_unintern(&pi->attr); | |
230 | pi->attr = attr_new; | |
231 | pi->uptime = bgp_clock(); | |
232 | } | |
233 | ||
234 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 235 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 236 | |
09319b4e | 237 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
238 | |
239 | return ret; | |
240 | } | |
241 | ||
242 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
243 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
244 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
245 | { | |
246 | int ret; | |
09319b4e | 247 | struct bgp_dest *dest; |
c44ab6f1 AK |
248 | struct bgp_path_info *pi; |
249 | ||
250 | if (!es->route_table) | |
251 | return 0; | |
252 | ||
253 | /* Locate route within the ESI. | |
254 | * NOTE: There is no RD here. | |
255 | */ | |
09319b4e DS |
256 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
257 | if (!dest) | |
c44ab6f1 AK |
258 | return 0; |
259 | ||
260 | /* Find matching route entry. */ | |
09319b4e | 261 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
262 | if (pi->extra |
263 | && (struct bgp_path_info *)pi->extra->parent == | |
264 | parent_pi) | |
265 | break; | |
266 | ||
267 | if (!pi) | |
268 | return 0; | |
269 | ||
270 | /* Mark entry for deletion */ | |
09319b4e | 271 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
272 | |
273 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 274 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
275 | |
276 | /* Unlock route node. */ | |
09319b4e | 277 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
278 | |
279 | return ret; | |
280 | } | |
281 | ||
282 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
283 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
284 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
285 | struct bgp_path_info *pi, int install) | |
286 | { | |
287 | int ret = 0; | |
288 | ||
289 | if (install) | |
290 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
291 | else | |
292 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
293 | ||
294 | if (ret) { | |
295 | flog_err( | |
296 | EC_BGP_EVPN_FAIL, | |
297 | "%u: Failed to %s EVPN %s route in ESI %s", | |
298 | bgp->vrf_id, | |
299 | install ? "install" : "uninstall", | |
300 | "ES", es->esi_str); | |
301 | return ret; | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | ||
306 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
307 | * Also remove all remote routes from the per ES table. Invoked when ES | |
308 | * is deleted. | |
185fb14a | 309 | */ |
c44ab6f1 AK |
310 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
311 | { | |
09319b4e | 312 | struct bgp_dest *dest; |
c44ab6f1 AK |
313 | struct bgp_path_info *pi, *nextpi; |
314 | ||
315 | /* de-activate the ES */ | |
316 | bgp_evpn_local_es_down(bgp, es); | |
317 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
318 | ||
319 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
320 | for (dest = bgp_table_top(es->route_table); dest; |
321 | dest = bgp_route_next(dest)) { | |
322 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
323 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
324 | bgp_path_info_delete(dest, pi); | |
325 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
326 | } |
327 | } | |
328 | } | |
329 | ||
330 | /***************************************************************************** | |
331 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
332 | * segment updates. | |
333 | */ | |
334 | ||
335 | /* create or update local EVPN type1/type4 route entry. | |
336 | * | |
337 | * This could be in - | |
338 | * the ES table if ESR/EAD-ES (or) | |
339 | * the VNI table if EAD-EVI (or) | |
340 | * the global table if ESR/EAD-ES/EAD-EVI | |
341 | * | |
342 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
343 | * ESR). | |
344 | */ | |
09319b4e DS |
345 | static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
346 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
347 | struct bgp_dest *dest, struct attr *attr, | |
348 | int add, struct bgp_path_info **ri, | |
349 | int *route_changed) | |
185fb14a | 350 | { |
185fb14a AK |
351 | struct bgp_path_info *tmp_pi = NULL; |
352 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
353 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
354 | struct attr *attr_new = NULL; | |
c44ab6f1 | 355 | struct prefix_evpn *evp; |
185fb14a AK |
356 | |
357 | *ri = NULL; | |
752eed47 | 358 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 359 | *route_changed = 1; |
185fb14a AK |
360 | |
361 | /* locate the local and remote entries if any */ | |
09319b4e | 362 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
363 | tmp_pi = tmp_pi->next) { |
364 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
365 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
366 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
367 | local_pi = tmp_pi; |
368 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
369 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
370 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
371 | remote_pi = tmp_pi; |
372 | } | |
373 | ||
c44ab6f1 AK |
374 | /* we don't expect to see a remote_ri at this point as |
375 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
376 | * in the VNI-rt-table. | |
185fb14a AK |
377 | */ |
378 | if (remote_pi) { | |
379 | flog_err( | |
23d0a753 DA |
380 | EC_BGP_ES_INVALID, |
381 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
382 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a AK |
383 | return -1; |
384 | } | |
385 | ||
386 | if (!local_pi && !add) | |
387 | return 0; | |
388 | ||
389 | /* create or update the entry */ | |
390 | if (!local_pi) { | |
391 | ||
392 | /* Add or update attribute to hash */ | |
393 | attr_new = bgp_attr_intern(attr); | |
394 | ||
395 | /* Create new route with its attribute. */ | |
396 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 397 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
398 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
399 | ||
c44ab6f1 AK |
400 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
401 | bgp_path_info_extra_get(tmp_pi); | |
402 | tmp_pi->extra->num_labels = 1; | |
403 | if (vpn) | |
404 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
405 | else | |
406 | tmp_pi->extra->label[0] = 0; | |
407 | } | |
408 | ||
185fb14a | 409 | /* add the newly created path to the route-node */ |
09319b4e | 410 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
411 | } else { |
412 | tmp_pi = local_pi; | |
413 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 414 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
415 | *route_changed = 0; |
416 | else { | |
417 | /* The attribute has changed. | |
418 | * Add (or update) attribute to hash. | |
419 | */ | |
420 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
421 | bgp_path_info_set_flag(dest, tmp_pi, |
422 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
423 | |
424 | /* Restore route, if needed. */ | |
425 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 426 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
427 | |
428 | /* Unintern existing, set to new. */ | |
429 | bgp_attr_unintern(&tmp_pi->attr); | |
430 | tmp_pi->attr = attr_new; | |
431 | tmp_pi->uptime = bgp_clock(); | |
432 | } | |
433 | } | |
434 | ||
c44ab6f1 AK |
435 | if (*route_changed) { |
436 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
437 | zlog_debug( |
438 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
439 | es->esi_str, vpn ? vpn->vni : 0, | |
440 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
441 | ? "esr" | |
442 | : (vpn ? "ead-evi" : "ead-es"), | |
443 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
444 | } |
445 | ||
185fb14a AK |
446 | /* Return back the route entry. */ |
447 | *ri = tmp_pi; | |
448 | return 0; | |
449 | } | |
450 | ||
c44ab6f1 AK |
451 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
452 | * | |
453 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
454 | * ESR). | |
455 | */ | |
456 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
457 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 458 | { |
185fb14a AK |
459 | afi_t afi = AFI_L2VPN; |
460 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 461 | struct bgp_path_info *pi; |
09319b4e DS |
462 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
463 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
464 | struct bgp_table *rt_table; |
465 | struct prefix_rd *prd; | |
185fb14a | 466 | |
c44ab6f1 AK |
467 | if (vpn) { |
468 | rt_table = vpn->route_table; | |
469 | prd = &vpn->prd; | |
470 | } else { | |
471 | rt_table = es->route_table; | |
472 | prd = &es->prd; | |
473 | } | |
185fb14a | 474 | |
c44ab6f1 AK |
475 | /* First, locate the route node within the ESI or VNI. |
476 | * If it doesn't exist, ther is nothing to do. | |
477 | * Note: there is no RD here. | |
478 | */ | |
09319b4e DS |
479 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
480 | if (!dest) | |
c44ab6f1 | 481 | return 0; |
185fb14a | 482 | |
c44ab6f1 | 483 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
484 | zlog_debug( |
485 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
486 | es->esi_str, vpn ? vpn->vni : 0, | |
487 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
488 | ? "esr" | |
489 | : (vpn ? "ead-evi" : "ead-es"), | |
490 | &es->originator_ip); | |
185fb14a | 491 | |
c44ab6f1 AK |
492 | /* Next, locate route node in the global EVPN routing table. |
493 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
494 | */ | |
09319b4e DS |
495 | global_dest = |
496 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
497 | (const struct prefix_evpn *)p, prd); | |
498 | if (global_dest) { | |
185fb14a | 499 | |
c44ab6f1 | 500 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 501 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
502 | |
503 | /* Schedule for processing - withdraws to peers happen from | |
504 | * this table. | |
505 | */ | |
506 | if (pi) | |
09319b4e DS |
507 | bgp_process(bgp, global_dest, afi, safi); |
508 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
509 | } |
510 | ||
511 | /* | |
c44ab6f1 | 512 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
513 | * This can just be removed. |
514 | */ | |
09319b4e | 515 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 516 | if (pi) |
09319b4e DS |
517 | bgp_path_info_reap(dest, pi); |
518 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
519 | return 0; |
520 | } | |
521 | ||
c44ab6f1 AK |
522 | /***************************************************************************** |
523 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
524 | * ESRs are used for DF election. Currently service-carving described in |
525 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
526 | * used by default. | |
527 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 528 | */ |
c44ab6f1 AK |
529 | /* Build extended community for EVPN ES (type-4) route */ |
530 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
531 | struct attr *attr) | |
185fb14a | 532 | { |
c44ab6f1 AK |
533 | struct ecommunity ecom_encap; |
534 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 535 | struct ecommunity ecom_df; |
c44ab6f1 AK |
536 | struct ecommunity_val eval; |
537 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 538 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
539 | bgp_encap_types tnl_type; |
540 | struct ethaddr mac; | |
185fb14a | 541 | |
c44ab6f1 AK |
542 | /* Encap */ |
543 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
544 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
545 | encode_encap_extcomm(tnl_type, &eval); | |
546 | ecom_encap.size = 1; | |
34540b0d | 547 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
548 | ecom_encap.val = (uint8_t *)eval.val; |
549 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 550 | |
c44ab6f1 AK |
551 | /* ES import RT */ |
552 | memset(&mac, 0, sizeof(struct ethaddr)); | |
553 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
554 | es_get_system_mac(&es->esi, &mac); | |
555 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
556 | ecom_es_rt.size = 1; | |
34540b0d | 557 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
558 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
559 | attr->ecommunity = | |
560 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 561 | |
74e2bd89 AK |
562 | /* DF election extended community */ |
563 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
564 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
565 | ecom_df.size = 1; | |
566 | ecom_df.val = (uint8_t *)eval_df.val; | |
567 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
568 | ||
c44ab6f1 | 569 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
570 | } |
571 | ||
c44ab6f1 AK |
572 | /* Create or update local type-4 route */ |
573 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
574 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
575 | { |
576 | int ret = 0; | |
c44ab6f1 AK |
577 | int route_changed = 0; |
578 | afi_t afi = AFI_L2VPN; | |
579 | safi_t safi = SAFI_EVPN; | |
580 | struct attr attr; | |
581 | struct attr *attr_new = NULL; | |
09319b4e | 582 | struct bgp_dest *dest = NULL; |
185fb14a | 583 | struct bgp_path_info *pi = NULL; |
185fb14a | 584 | |
c44ab6f1 AK |
585 | memset(&attr, 0, sizeof(struct attr)); |
586 | ||
587 | /* Build path-attribute for this route. */ | |
588 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
589 | attr.nexthop = es->originator_ip; | |
590 | attr.mp_nexthop_global_in = es->originator_ip; | |
591 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
592 | ||
593 | /* Set up extended community. */ | |
594 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
595 | ||
596 | /* First, create (or fetch) route node within the ESI. */ | |
597 | /* NOTE: There is no RD here. */ | |
09319b4e | 598 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 599 | |
c44ab6f1 | 600 | /* Create or update route entry. */ |
09319b4e DS |
601 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
602 | &pi, &route_changed); | |
ec779825 | 603 | if (ret != 0) |
23d0a753 DA |
604 | flog_err( |
605 | EC_BGP_ES_INVALID, | |
606 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
607 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 608 | |
c44ab6f1 AK |
609 | assert(pi); |
610 | attr_new = pi->attr; | |
185fb14a | 611 | |
c44ab6f1 AK |
612 | /* Perform route selection; |
613 | * this is just to set the flags correctly | |
614 | * as local route in the ES always wins. | |
615 | */ | |
09319b4e DS |
616 | bgp_evpn_es_route_select_install(bgp, es, dest); |
617 | bgp_dest_unlock_node(dest); | |
185fb14a | 618 | |
c44ab6f1 AK |
619 | /* If this is a new route or some attribute has changed, export the |
620 | * route to the global table. The route will be advertised to peers | |
621 | * from there. Note that this table is a 2-level tree (RD-level + | |
622 | * Prefix-level) similar to L3VPN routes. | |
623 | */ | |
624 | if (route_changed) { | |
625 | struct bgp_path_info *global_pi; | |
185fb14a | 626 | |
09319b4e DS |
627 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
628 | p, &es->prd); | |
629 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
630 | attr_new, 1, &global_pi, | |
631 | &route_changed); | |
185fb14a | 632 | |
c44ab6f1 | 633 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
634 | bgp_process(bgp, dest, afi, safi); |
635 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
636 | } |
637 | ||
c44ab6f1 AK |
638 | /* Unintern temporary. */ |
639 | aspath_unintern(&attr.aspath); | |
640 | return 0; | |
185fb14a AK |
641 | } |
642 | ||
c44ab6f1 AK |
643 | /* Delete local type-4 route */ |
644 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
645 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 646 | { |
c44ab6f1 AK |
647 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
648 | } | |
185fb14a | 649 | |
c44ab6f1 AK |
650 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
651 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
652 | struct attr *attr, uint8_t *pfx, int psize, | |
653 | uint32_t addpath_id) | |
654 | { | |
655 | int ret; | |
656 | esi_t esi; | |
657 | uint8_t ipaddr_len; | |
658 | struct in_addr vtep_ip; | |
659 | struct prefix_rd prd; | |
660 | struct prefix_evpn p; | |
185fb14a | 661 | |
c44ab6f1 AK |
662 | /* Type-4 route should be either 23 or 35 bytes |
663 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 664 | */ |
c44ab6f1 AK |
665 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
666 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
667 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
668 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
669 | peer->bgp->vrf_id, peer->host, psize); | |
670 | return -1; | |
671 | } | |
185fb14a | 672 | |
c44ab6f1 AK |
673 | /* Make prefix_rd */ |
674 | prd.family = AF_UNSPEC; | |
675 | prd.prefixlen = 64; | |
676 | memcpy(&prd.val, pfx, RD_BYTES); | |
677 | pfx += RD_BYTES; | |
185fb14a | 678 | |
c44ab6f1 AK |
679 | /* get the ESI */ |
680 | memcpy(&esi, pfx, ESI_BYTES); | |
681 | pfx += ESI_BYTES; | |
185fb14a | 682 | |
185fb14a | 683 | |
c44ab6f1 AK |
684 | /* Get the IP. */ |
685 | ipaddr_len = *pfx++; | |
686 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
687 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
688 | } else { | |
689 | flog_err( | |
690 | EC_BGP_EVPN_ROUTE_INVALID, | |
691 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
692 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
693 | return -1; | |
694 | } | |
185fb14a | 695 | |
c44ab6f1 AK |
696 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
697 | /* Process the route. */ | |
698 | if (attr) { | |
699 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
700 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
701 | &prd, NULL, 0, 0, NULL); | |
702 | } else { | |
703 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
704 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
705 | &prd, NULL, 0, NULL); | |
706 | } | |
185fb14a AK |
707 | return ret; |
708 | } | |
709 | ||
c44ab6f1 AK |
710 | /* Check if a prefix belongs to the local ES */ |
711 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
712 | struct bgp_evpn_es *es) | |
185fb14a | 713 | { |
c44ab6f1 AK |
714 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
715 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
716 | } |
717 | ||
c44ab6f1 AK |
718 | /* Import remote ESRs on local ethernet segment add */ |
719 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
720 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
721 | { |
722 | int ret; | |
723 | afi_t afi; | |
724 | safi_t safi; | |
09319b4e | 725 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
726 | struct bgp_table *table; |
727 | struct bgp_path_info *pi; | |
728 | ||
729 | afi = AFI_L2VPN; | |
730 | safi = SAFI_EVPN; | |
731 | ||
c44ab6f1 AK |
732 | /* Walk entire global routing table and evaluate routes which could be |
733 | * imported into this Ethernet Segment. | |
185fb14a | 734 | */ |
09319b4e DS |
735 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
736 | rd_dest = bgp_route_next(rd_dest)) { | |
737 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
738 | if (!table) |
739 | continue; | |
740 | ||
09319b4e DS |
741 | for (dest = bgp_table_top(table); dest; |
742 | dest = bgp_route_next(dest)) { | |
743 | struct prefix_evpn *evp = | |
752eed47 | 744 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 745 | |
09319b4e DS |
746 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
747 | pi = pi->next) { | |
185fb14a AK |
748 | /* |
749 | * Consider "valid" remote routes applicable for | |
750 | * this ES. | |
751 | */ | |
752 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
753 | && pi->type == ZEBRA_ROUTE_BGP |
754 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
755 | continue; |
756 | ||
c44ab6f1 | 757 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
758 | continue; |
759 | ||
760 | if (install) | |
c44ab6f1 AK |
761 | ret = bgp_evpn_es_route_install( |
762 | bgp, es, evp, pi); | |
185fb14a | 763 | else |
c44ab6f1 AK |
764 | ret = bgp_evpn_es_route_uninstall( |
765 | bgp, es, evp, pi); | |
185fb14a AK |
766 | |
767 | if (ret) { | |
768 | flog_err( | |
2dbe669b DA |
769 | EC_BGP_EVPN_FAIL, |
770 | "Failed to %s EVPN %pFX route in ESI %s", | |
771 | install ? "install" | |
185fb14a | 772 | : "uninstall", |
2dbe669b | 773 | evp, es->esi_str); |
dc52bece DS |
774 | |
775 | bgp_dest_unlock_node(rd_dest); | |
776 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
777 | return ret; |
778 | } | |
779 | } | |
780 | } | |
781 | } | |
782 | return 0; | |
783 | } | |
784 | ||
c44ab6f1 AK |
785 | /***************************************************************************** |
786 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
787 | * There are two types of EAD routes - | |
788 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
789 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 790 | */ |
185fb14a | 791 | |
c44ab6f1 AK |
792 | /* Extended communities associated with EAD-per-ES */ |
793 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
794 | struct attr *attr) | |
185fb14a | 795 | { |
c44ab6f1 AK |
796 | struct ecommunity ecom_encap; |
797 | struct ecommunity ecom_esi_label; | |
798 | struct ecommunity_val eval; | |
799 | struct ecommunity_val eval_esi_label; | |
800 | bgp_encap_types tnl_type; | |
801 | struct listnode *evi_node, *rt_node; | |
802 | struct ecommunity *ecom; | |
803 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 804 | |
c44ab6f1 AK |
805 | /* Encap */ |
806 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
807 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
808 | encode_encap_extcomm(tnl_type, &eval); | |
809 | ecom_encap.size = 1; | |
34540b0d | 810 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
811 | ecom_encap.val = (uint8_t *)eval.val; |
812 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 813 | |
c44ab6f1 AK |
814 | /* ESI label */ |
815 | encode_esi_label_extcomm(&eval_esi_label, | |
816 | false /*single_active*/); | |
817 | ecom_esi_label.size = 1; | |
34540b0d | 818 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
819 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
820 | attr->ecommunity = | |
821 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
822 | ||
823 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
824 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
825 | * with it. | |
826 | */ | |
827 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
828 | evi_node, es_evi)) { | |
829 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
830 | continue; | |
831 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
832 | rt_node, ecom)) | |
833 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
834 | ecom); | |
835 | } | |
836 | ||
837 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
838 | } | |
839 | ||
840 | /* Extended communities associated with EAD-per-EVI */ | |
841 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
842 | struct bgpevpn *vpn, struct attr *attr) | |
843 | { | |
844 | struct ecommunity ecom_encap; | |
845 | struct ecommunity_val eval; | |
846 | bgp_encap_types tnl_type; | |
847 | struct listnode *rt_node; | |
848 | struct ecommunity *ecom; | |
849 | ||
850 | /* Encap */ | |
851 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
852 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
853 | encode_encap_extcomm(tnl_type, &eval); | |
854 | ecom_encap.size = 1; | |
7659ad68 | 855 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
856 | ecom_encap.val = (uint8_t *)eval.val; |
857 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
858 | ||
859 | /* Add export RTs for the L2-VNI */ | |
860 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
861 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
862 | ||
863 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
864 | } | |
865 | ||
866 | /* Update EVPN EAD (type-1) route - | |
867 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
868 | */ | |
869 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
870 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
871 | struct prefix_evpn *p) | |
872 | { | |
873 | int ret = 0; | |
874 | afi_t afi = AFI_L2VPN; | |
875 | safi_t safi = SAFI_EVPN; | |
876 | struct attr attr; | |
877 | struct attr *attr_new = NULL; | |
09319b4e | 878 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
879 | struct bgp_path_info *pi = NULL; |
880 | int route_changed = 0; | |
881 | struct prefix_rd *global_rd; | |
882 | ||
883 | memset(&attr, 0, sizeof(struct attr)); | |
884 | ||
885 | /* Build path-attribute for this route. */ | |
886 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
887 | attr.nexthop = es->originator_ip; | |
888 | attr.mp_nexthop_global_in = es->originator_ip; | |
889 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
890 | ||
891 | if (vpn) { | |
892 | /* EAD-EVI route update */ | |
893 | /* MPLS label */ | |
894 | vni2label(vpn->vni, &(attr.label)); | |
895 | ||
896 | /* Set up extended community */ | |
897 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
898 | ||
899 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 900 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
901 | |
902 | /* Create or update route entry. */ | |
09319b4e DS |
903 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
904 | &attr, 1, &pi, &route_changed); | |
ec779825 | 905 | if (ret != 0) |
23d0a753 DA |
906 | flog_err( |
907 | EC_BGP_ES_INVALID, | |
908 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
909 | bgp->vrf_id, es->esi_str, vpn->vni, | |
910 | &es->originator_ip); | |
c44ab6f1 AK |
911 | global_rd = &vpn->prd; |
912 | } else { | |
913 | /* EAD-ES route update */ | |
914 | /* MPLS label is 0 for EAD-ES route */ | |
915 | ||
916 | /* Set up extended community */ | |
917 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
918 | ||
919 | /* First, create (or fetch) route node within the ES. */ | |
920 | /* NOTE: There is no RD here. */ | |
921 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 922 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
923 | |
924 | /* Create or update route entry. */ | |
09319b4e DS |
925 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
926 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 927 | if (ret != 0) { |
23d0a753 DA |
928 | flog_err( |
929 | EC_BGP_ES_INVALID, | |
930 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
931 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
932 | } |
933 | global_rd = &es->prd; | |
934 | } | |
935 | ||
936 | ||
937 | assert(pi); | |
938 | attr_new = pi->attr; | |
939 | ||
940 | /* Perform route selection; | |
941 | * this is just to set the flags correctly as local route in | |
942 | * the ES always wins. | |
943 | */ | |
09319b4e DS |
944 | evpn_route_select_install(bgp, vpn, dest); |
945 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
946 | |
947 | /* If this is a new route or some attribute has changed, export the | |
948 | * route to the global table. The route will be advertised to peers | |
949 | * from there. Note that this table is a 2-level tree (RD-level + | |
950 | * Prefix-level) similar to L3VPN routes. | |
951 | */ | |
952 | if (route_changed) { | |
953 | struct bgp_path_info *global_pi; | |
954 | ||
09319b4e DS |
955 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
956 | p, global_rd); | |
957 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
958 | attr_new, 1, &global_pi, | |
959 | &route_changed); | |
c44ab6f1 AK |
960 | |
961 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
962 | bgp_process(bgp, dest, afi, safi); |
963 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
964 | } |
965 | ||
966 | /* Unintern temporary. */ | |
967 | aspath_unintern(&attr.aspath); | |
968 | return 0; | |
969 | } | |
970 | ||
971 | /* Delete local Type-1 route */ | |
972 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
973 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
974 | { | |
975 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
976 | } | |
977 | ||
978 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
979 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
980 | struct prefix_evpn *p) | |
981 | { | |
982 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
983 | } | |
984 | ||
985 | /* Generate EAD-EVI for all VNIs */ | |
986 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
987 | struct bgp_evpn_es *es) | |
988 | { | |
989 | struct listnode *evi_node; | |
990 | struct prefix_evpn p; | |
991 | struct bgp_evpn_es_evi *es_evi; | |
992 | ||
993 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
994 | /* EAD-EVI route add for this ES is already done */ | |
995 | return; | |
996 | ||
997 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
998 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
999 | &es->esi, es->originator_ip); | |
1000 | ||
1001 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1002 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1003 | continue; | |
1004 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1005 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1006 | "%u: Type4 route creation failure for ESI %s", | |
1007 | bgp->vrf_id, es->esi_str); | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | /* | |
1012 | * Withdraw EAD-EVI for all VNIs | |
1013 | */ | |
1014 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1015 | struct bgp_evpn_es *es) | |
1016 | { | |
1017 | struct listnode *evi_node; | |
1018 | struct prefix_evpn p; | |
1019 | struct bgp_evpn_es_evi *es_evi; | |
1020 | ||
1021 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1022 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1023 | /* EAD-EVI route has not been advertised for this ES */ | |
1024 | return; | |
1025 | ||
1026 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1027 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1028 | &es->esi, es->originator_ip); | |
1029 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1030 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1031 | continue; | |
1032 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1033 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1034 | "%u: Type4 route creation failure for ESI %s", | |
1035 | bgp->vrf_id, es->esi_str); | |
1036 | } | |
1037 | } | |
185fb14a AK |
1038 | |
1039 | /* | |
c44ab6f1 | 1040 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1041 | */ |
c44ab6f1 AK |
1042 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1043 | struct attr *attr, uint8_t *pfx, int psize, | |
1044 | uint32_t addpath_id) | |
185fb14a AK |
1045 | { |
1046 | int ret; | |
c44ab6f1 | 1047 | struct prefix_rd prd; |
185fb14a | 1048 | esi_t esi; |
c44ab6f1 AK |
1049 | uint32_t eth_tag; |
1050 | mpls_label_t label; | |
185fb14a | 1051 | struct in_addr vtep_ip; |
185fb14a AK |
1052 | struct prefix_evpn p; |
1053 | ||
c44ab6f1 | 1054 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1055 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1056 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1057 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1058 | return -1; |
1059 | } | |
1060 | ||
1061 | /* Make prefix_rd */ | |
1062 | prd.family = AF_UNSPEC; | |
1063 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1064 | memcpy(&prd.val, pfx, RD_BYTES); |
1065 | pfx += RD_BYTES; | |
185fb14a AK |
1066 | |
1067 | /* get the ESI */ | |
1068 | memcpy(&esi, pfx, ESI_BYTES); | |
1069 | pfx += ESI_BYTES; | |
1070 | ||
c44ab6f1 AK |
1071 | /* Copy Ethernet Tag */ |
1072 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1073 | eth_tag = ntohl(eth_tag); | |
1074 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1075 | |
c44ab6f1 | 1076 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1077 | |
c44ab6f1 AK |
1078 | /* EAD route prefix doesn't include the nexthop in the global |
1079 | * table | |
1080 | */ | |
1081 | vtep_ip.s_addr = 0; | |
1082 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); | |
185fb14a AK |
1083 | /* Process the route. */ |
1084 | if (attr) { | |
1085 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1086 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1087 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1088 | } else { |
1089 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1090 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1091 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1092 | } |
1093 | return ret; | |
1094 | } | |
1095 | ||
c44ab6f1 AK |
1096 | /*****************************************************************************/ |
1097 | /* Ethernet Segment Management | |
1098 | * 1. Ethernet Segment is a collection of links attached to the same | |
1099 | * server (MHD) or switch (MHN) | |
1100 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1101 | * 10-byte ES-ID. | |
1102 | * 3. Local ESs are configured in zebra and sent to BGP | |
1103 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1104 | * created on first reference and release on last de-reference | |
1105 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1106 | * to have an ES peer. | |
1107 | */ | |
1108 | ||
1109 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1110 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1111 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1112 | * have been imported into one or more VNIs | |
185fb14a | 1113 | */ |
c44ab6f1 AK |
1114 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1115 | { | |
1116 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1117 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1118 | ||
1119 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1120 | } | |
1121 | ||
1122 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1123 | struct in_addr vtep_ip) | |
1124 | { | |
1125 | struct bgp_evpn_es_vtep *es_vtep; | |
1126 | ||
1127 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1128 | ||
1129 | es_vtep->es = es; | |
1130 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1131 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1132 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1133 | ||
1134 | return es_vtep; | |
1135 | } | |
1136 | ||
1137 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1138 | { | |
1139 | struct bgp_evpn_es *es = es_vtep->es; | |
1140 | ||
1141 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1142 | es_vtep->evi_cnt) | |
1143 | /* as long as there is some reference we can't free it */ | |
1144 | return; | |
1145 | ||
1146 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1147 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1148 | } | |
1149 | ||
1150 | /* check if VTEP is already part of the list */ | |
1151 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1152 | struct in_addr vtep_ip) | |
1153 | { | |
1154 | struct listnode *node = NULL; | |
1155 | struct bgp_evpn_es_vtep *es_vtep; | |
1156 | ||
1157 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1158 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1159 | return es_vtep; | |
1160 | } | |
1161 | return NULL; | |
1162 | } | |
1163 | ||
1164 | /* Send the remote ES to zebra for NHG programming */ | |
1165 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1166 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1167 | { | |
1168 | struct bgp_evpn_es *es = es_vtep->es; | |
1169 | struct stream *s; | |
74e2bd89 | 1170 | uint32_t flags = 0; |
c44ab6f1 AK |
1171 | |
1172 | /* Check socket. */ | |
1173 | if (!zclient || zclient->sock < 0) | |
1174 | return 0; | |
1175 | ||
1176 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1177 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1178 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1179 | zlog_debug("No zebra instance, not installing remote es %s", | |
1180 | es->esi_str); | |
1181 | return 0; | |
1182 | } | |
1183 | ||
74e2bd89 AK |
1184 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1185 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1186 | ||
c44ab6f1 AK |
1187 | s = zclient->obuf; |
1188 | stream_reset(s); | |
1189 | ||
1190 | zclient_create_header(s, | |
1191 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1192 | bgp->vrf_id); | |
1193 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1194 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1195 | if (add) { |
1196 | stream_putl(s, flags); | |
1197 | stream_putc(s, es_vtep->df_alg); | |
1198 | stream_putw(s, es_vtep->df_pref); | |
1199 | } | |
c44ab6f1 AK |
1200 | |
1201 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1202 | ||
1203 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1204 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1205 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1206 | |
1207 | return zclient_send_message(zclient); | |
1208 | } | |
1209 | ||
1210 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1211 | struct bgp_evpn_es_vtep *es_vtep, |
1212 | bool param_change) | |
c44ab6f1 AK |
1213 | { |
1214 | bool old_active; | |
1215 | bool new_active; | |
1216 | ||
1217 | old_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1218 | /* currently we need an active EVI reference to use the VTEP as | |
1219 | * a nexthop. this may change... | |
1220 | */ | |
1221 | if (es_vtep->evi_cnt) | |
1222 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1223 | else | |
1224 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1225 | ||
1226 | new_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1227 | ||
74e2bd89 | 1228 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1229 | |
74e2bd89 AK |
1230 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1231 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1232 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1233 | new_active ? "active" : "inactive", | |
1234 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1235 | |
74e2bd89 AK |
1236 | /* send remote ES to zebra */ |
1237 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1238 | |
8bcb09a1 AK |
1239 | /* The NHG is updated first for efficient failover handling. |
1240 | * Note the NHG can be de-activated while there are bgp | |
1241 | * routes referencing it. Zebra is capable of handling that | |
1242 | * elegantly by holding the NHG till all routes using it are | |
1243 | * removed. | |
26c03e43 | 1244 | */ |
8bcb09a1 AK |
1245 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
1246 | bgp_evpn_es_path_all_update(es_vtep, new_active); | |
c589d847 | 1247 | |
74e2bd89 AK |
1248 | /* queue up the es for background consistency checks */ |
1249 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1250 | } | |
c44ab6f1 AK |
1251 | } |
1252 | ||
1253 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1254 | struct bgp_evpn_es *es, |
1255 | struct in_addr vtep_ip, | |
1256 | bool esr, uint8_t df_alg, | |
1257 | uint16_t df_pref) | |
c44ab6f1 AK |
1258 | { |
1259 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1260 | bool param_change = false; |
c44ab6f1 AK |
1261 | |
1262 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1263 | ||
1264 | if (!es_vtep) | |
1265 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1266 | ||
1267 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1268 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1269 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1270 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1271 | |
74e2bd89 | 1272 | if (esr) { |
c44ab6f1 | 1273 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1274 | if ((es_vtep->df_pref != df_pref) |
1275 | || (es_vtep->df_alg != df_alg)) { | |
1276 | param_change = true; | |
1277 | es_vtep->df_pref = df_pref; | |
1278 | es_vtep->df_alg = df_alg; | |
1279 | } | |
1280 | } else { | |
c44ab6f1 | 1281 | ++es_vtep->evi_cnt; |
74e2bd89 | 1282 | } |
c44ab6f1 | 1283 | |
74e2bd89 | 1284 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1285 | |
1286 | return es_vtep; | |
1287 | } | |
1288 | ||
1289 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1290 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1291 | { | |
74e2bd89 AK |
1292 | bool param_change = false; |
1293 | ||
c44ab6f1 | 1294 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1295 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1296 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1297 | if (esr) { |
1298 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1299 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1300 | param_change = true; | |
1301 | es_vtep->df_pref = 0; | |
1302 | es_vtep->df_alg = 0; | |
1303 | } | |
c44ab6f1 AK |
1304 | } else { |
1305 | if (es_vtep->evi_cnt) | |
1306 | --es_vtep->evi_cnt; | |
1307 | } | |
1308 | ||
74e2bd89 | 1309 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1310 | bgp_evpn_es_vtep_free(es_vtep); |
1311 | } | |
1312 | ||
1313 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1314 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1315 | { | |
1316 | struct bgp_evpn_es_vtep *es_vtep; | |
1317 | ||
1318 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1319 | if (es_vtep) | |
1320 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1321 | } | |
1322 | ||
26c03e43 AK |
1323 | bool bgp_evpn_es_is_vtep_active(esi_t *esi, struct in_addr nh) |
1324 | { | |
1325 | struct bgp_evpn_es *es; | |
1326 | struct bgp_evpn_es_vtep *es_vtep; | |
1327 | struct listnode *node = NULL; | |
1328 | bool rc = false; | |
1329 | ||
1330 | if (!memcmp(esi, zero_esi, sizeof(*esi)) || !nh.s_addr) | |
1331 | return true; | |
1332 | ||
1333 | es = bgp_evpn_es_find(esi); | |
1334 | if (!es) | |
1335 | return false; | |
1336 | ||
1337 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1338 | if (es_vtep->vtep_ip.s_addr == nh.s_addr) { | |
1339 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
1340 | rc = true; | |
1341 | break; | |
1342 | } | |
1343 | } | |
1344 | return rc; | |
1345 | } | |
1346 | ||
1347 | /********************** ES MAC-IP paths ************************************* | |
1348 | * MAC-IP routes in the VNI routing table are linked to the destination | |
1349 | * ES for efficient updates on ES changes (such as VTEP add/del). | |
1350 | ****************************************************************************/ | |
1351 | void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) | |
1352 | { | |
1353 | bgp_evpn_path_es_unlink(es_info); | |
1354 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1355 | } | |
1356 | ||
1357 | static struct bgp_path_es_info * | |
1358 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1359 | { | |
1360 | struct bgp_path_info_extra *e; | |
1361 | ||
1362 | e = bgp_path_info_extra_get(pi); | |
1363 | ||
1364 | /* If es_info doesn't exist allocate it */ | |
1365 | if (!e->es_info) { | |
1366 | e->es_info = XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1367 | sizeof(struct bgp_path_es_info)); | |
1368 | e->es_info->pi = pi; | |
1369 | e->es_info->vni = vni; | |
1370 | } | |
1371 | ||
1372 | return e->es_info; | |
1373 | } | |
1374 | ||
1375 | void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) | |
1376 | { | |
1377 | struct bgp_evpn_es *es = es_info->es; | |
1378 | struct bgp_path_info *pi; | |
26c03e43 AK |
1379 | |
1380 | if (!es) | |
1381 | return; | |
1382 | ||
1383 | pi = es_info->pi; | |
1384 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1385 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1386 | &pi->net->p, es->esi_str); | |
26c03e43 AK |
1387 | |
1388 | list_delete_node(es->macip_path_list, &es_info->es_listnode); | |
1389 | es_info->es = NULL; | |
1390 | ||
1391 | /* if there are no other references against the ES it | |
1392 | * needs to be freed | |
1393 | */ | |
1394 | bgp_evpn_es_free(es, __func__); | |
1395 | ||
1396 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1397 | * along with the path. | |
1398 | */ | |
1399 | } | |
1400 | ||
1401 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1402 | { | |
1403 | struct bgp_path_es_info *es_info; | |
1404 | struct bgp_evpn_es *es; | |
1405 | struct bgp *bgp_evpn = bgp_get_evpn(); | |
26c03e43 AK |
1406 | |
1407 | es_info = pi->extra ? pi->extra->es_info : NULL; | |
1408 | /* if the esi is zero just unlink the path from the old es */ | |
1409 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1410 | if (es_info) | |
1411 | bgp_evpn_path_es_unlink(es_info); | |
1412 | return; | |
1413 | } | |
1414 | ||
1415 | if (!bgp_evpn) | |
1416 | return; | |
1417 | ||
1418 | /* setup es_info against the path if it doesn't aleady exist */ | |
1419 | if (!es_info) | |
1420 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1421 | ||
1422 | /* find-create ES */ | |
1423 | es = bgp_evpn_es_find(esi); | |
1424 | if (!es) | |
1425 | bgp_evpn_es_new(bgp_evpn, esi); | |
1426 | ||
1427 | /* dup check */ | |
1428 | if (es_info->es == es) | |
1429 | return; | |
1430 | ||
1431 | /* unlink old ES if any */ | |
1432 | bgp_evpn_path_es_unlink(es_info); | |
1433 | ||
1434 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1435 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1436 | es->esi_str); | |
26c03e43 AK |
1437 | |
1438 | /* link mac-ip path to the new destination ES */ | |
1439 | es_info->es = es; | |
1440 | listnode_init(&es_info->es_listnode, es_info); | |
229587fb | 1441 | listnode_add(es->macip_path_list, &es_info->es_listnode); |
26c03e43 AK |
1442 | } |
1443 | ||
1444 | static void bgp_evpn_es_path_all_update(struct bgp_evpn_es_vtep *es_vtep, | |
1445 | bool active) | |
1446 | { | |
1447 | struct listnode *node; | |
1448 | struct bgp_path_es_info *es_info; | |
1449 | struct bgp_path_info *pi; | |
1450 | struct bgp_path_info *parent_pi; | |
1451 | struct bgp_evpn_es *es = es_vtep->es; | |
1452 | char prefix_buf[PREFIX_STRLEN]; | |
1453 | ||
1454 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1455 | zlog_debug("update all paths linked to es %s", es->esi_str); | |
1456 | ||
1457 | for (ALL_LIST_ELEMENTS_RO(es->macip_path_list, node, es_info)) { | |
1458 | pi = es_info->pi; | |
229587fb AK |
1459 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID)) |
1460 | continue; | |
1461 | ||
26c03e43 AK |
1462 | if (pi->sub_type != BGP_ROUTE_IMPORTED) |
1463 | continue; | |
1464 | ||
1465 | parent_pi = pi->extra ? pi->extra->parent : NULL; | |
1466 | if (!parent_pi || !parent_pi->attr) | |
1467 | continue; | |
1468 | ||
1469 | if (es_vtep->vtep_ip.s_addr != parent_pi->attr->nexthop.s_addr) | |
1470 | continue; | |
1471 | ||
1472 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1473 | zlog_debug("update path %s linked to es %s", | |
1474 | prefix2str(&parent_pi->net->p, prefix_buf, | |
1475 | sizeof(prefix_buf)), | |
1476 | es->esi_str); | |
1477 | bgp_evpn_import_route_in_vrfs(parent_pi, active ? 1 : 0); | |
1478 | } | |
1479 | } | |
1480 | ||
c44ab6f1 AK |
1481 | /* compare ES-IDs for the global ES RB tree */ |
1482 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1483 | const struct bgp_evpn_es *es2) | |
1484 | { | |
1485 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1486 | } | |
1487 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1488 | ||
1489 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1490 | { |
c44ab6f1 | 1491 | struct bgp_evpn_es tmp; |
185fb14a | 1492 | |
185fb14a | 1493 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1494 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1495 | } |
1496 | ||
c44ab6f1 | 1497 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1498 | { |
c44ab6f1 | 1499 | struct bgp_evpn_es *es; |
185fb14a AK |
1500 | |
1501 | if (!bgp) | |
1502 | return NULL; | |
1503 | ||
c44ab6f1 | 1504 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1505 | |
c44ab6f1 | 1506 | /* set the ESI */ |
185fb14a | 1507 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1508 | |
1509 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1510 | es->es_vtep_list = list_new(); |
1511 | listset_app_node_mem(es->es_vtep_list); | |
1512 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1513 | |
c44ab6f1 | 1514 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1515 | |
c44ab6f1 | 1516 | /* Initialize the ES routing table */ |
185fb14a AK |
1517 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1518 | ||
c44ab6f1 AK |
1519 | /* Add to rb_tree */ |
1520 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1521 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1522 | return NULL; | |
1523 | } | |
1524 | ||
c44ab6f1 AK |
1525 | /* Initialise the ES-EVI list */ |
1526 | es->es_evi_list = list_new(); | |
1527 | listset_app_node_mem(es->es_evi_list); | |
1528 | ||
c589d847 AK |
1529 | /* Initialise the ES-VRF list used for L3NHG management */ |
1530 | es->es_vrf_list = list_new(); | |
1531 | listset_app_node_mem(es->es_vrf_list); | |
1532 | ||
26c03e43 AK |
1533 | /* Initialise the route list used for efficient event handling */ |
1534 | es->macip_path_list = list_new(); | |
1535 | listset_app_node_mem(es->macip_path_list); | |
1536 | ||
c44ab6f1 AK |
1537 | QOBJ_REG(es, bgp_evpn_es); |
1538 | ||
185fb14a AK |
1539 | return es; |
1540 | } | |
1541 | ||
c44ab6f1 | 1542 | /* Free a given ES - |
185fb14a AK |
1543 | * This just frees appropriate memory, caller should have taken other |
1544 | * needed actions. | |
1545 | */ | |
45a859f1 | 1546 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1547 | { |
26c03e43 AK |
1548 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
1549 | || listcount(es->macip_path_list)) | |
c44ab6f1 AK |
1550 | return; |
1551 | ||
45a859f1 AK |
1552 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1553 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1554 | ||
c44ab6f1 AK |
1555 | /* cleanup resources maintained against the ES */ |
1556 | list_delete(&es->es_evi_list); | |
c589d847 | 1557 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1558 | list_delete(&es->es_vtep_list); |
26c03e43 | 1559 | list_delete(&es->macip_path_list); |
185fb14a | 1560 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1561 | |
1562 | /* remove the entry from various databases */ | |
1563 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1564 | bgp_evpn_es_cons_checks_pend_del(es); | |
1565 | ||
185fb14a AK |
1566 | QOBJ_UNREG(es); |
1567 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1568 | } | |
1569 | ||
c44ab6f1 AK |
1570 | /* init local info associated with the ES */ |
1571 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1572 | { |
c44ab6f1 | 1573 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
185fb14a | 1574 | |
c44ab6f1 AK |
1575 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1576 | return; | |
185fb14a | 1577 | |
c44ab6f1 AK |
1578 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
1579 | listnode_init(&es->es_listnode, es); | |
1580 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1581 | |
c44ab6f1 AK |
1582 | /* auto derive RD for this es */ |
1583 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1584 | es->prd.family = AF_UNSPEC; | |
1585 | es->prd.prefixlen = 64; | |
23d0a753 | 1586 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 AK |
1587 | (void)str2prefix_rd(buf, &es->prd); |
1588 | } | |
1589 | ||
1590 | /* clear any local info associated with the ES */ | |
1591 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es) | |
1592 | { | |
1593 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1594 | return; | |
185fb14a | 1595 | |
c44ab6f1 | 1596 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1597 | |
c44ab6f1 AK |
1598 | /* remove from the ES local list */ |
1599 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1600 | ||
1601 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1602 | ||
45a859f1 | 1603 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1604 | } |
1605 | ||
c44ab6f1 AK |
1606 | /* eval remote info associated with the ES */ |
1607 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1608 | { | |
1609 | if (es->remote_es_evi_cnt) { | |
1610 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1611 | } else { | |
1612 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1613 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1614 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1615 | } |
1616 | } | |
1617 | } | |
1618 | ||
1619 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ | |
1620 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
1621 | struct bgp_evpn_es *es) | |
185fb14a | 1622 | { |
185fb14a | 1623 | struct prefix_evpn p; |
c44ab6f1 | 1624 | int ret; |
185fb14a | 1625 | |
c44ab6f1 AK |
1626 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1627 | return; | |
185fb14a | 1628 | |
c44ab6f1 | 1629 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); |
185fb14a | 1630 | |
c44ab6f1 AK |
1631 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1632 | zlog_debug("local es %s down", es->esi_str); | |
1633 | ||
1634 | /* withdraw ESR */ | |
1635 | /* Delete and withdraw locally learnt ES route */ | |
1636 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1637 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1638 | if (ret) { | |
1639 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1640 | "%u failed to delete type-4 route for ESI %s", | |
1641 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1642 | } |
1643 | ||
c44ab6f1 AK |
1644 | /* withdraw EAD-EVI */ |
1645 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1646 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1647 | |
c44ab6f1 AK |
1648 | /* withdraw EAD-ES */ |
1649 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1650 | &es->esi, es->originator_ip); | |
1651 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1652 | if (ret) { | |
1653 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1654 | "%u failed to delete type-1 route for ESI %s", | |
1655 | bgp->vrf_id, es->esi_str); | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | /* Process ES link oper-up by generating ES-EAD and ESR */ | |
74e2bd89 AK |
1660 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, |
1661 | bool regen_esr) | |
c44ab6f1 AK |
1662 | { |
1663 | struct prefix_evpn p; | |
74e2bd89 | 1664 | bool regen_ead = false; |
c44ab6f1 | 1665 | |
74e2bd89 AK |
1666 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { |
1667 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1668 | zlog_debug("local es %s up", es->esi_str); | |
c44ab6f1 | 1669 | |
74e2bd89 AK |
1670 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); |
1671 | regen_esr = true; | |
1672 | regen_ead = true; | |
1673 | } | |
c44ab6f1 | 1674 | |
74e2bd89 AK |
1675 | if (regen_esr) { |
1676 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1677 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1678 | /* generate ESR */ | |
1679 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1680 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1681 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1682 | "%u: Type4 route creation failure for ESI %s", | |
1683 | bgp->vrf_id, es->esi_str); | |
1684 | } | |
c44ab6f1 | 1685 | |
74e2bd89 AK |
1686 | if (regen_ead) { |
1687 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1688 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1689 | /* generate EAD-EVI */ | |
1690 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1691 | |
74e2bd89 AK |
1692 | /* generate EAD-ES */ |
1693 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1694 | es->originator_ip); | |
1695 | bgp_evpn_type1_route_update(bgp, es, NULL, &p); | |
1696 | } | |
c44ab6f1 AK |
1697 | } |
1698 | ||
1699 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) | |
1700 | { | |
1701 | struct bgp_evpn_es_evi *es_evi; | |
1702 | struct listnode *evi_node, *evi_next_node; | |
1703 | ||
1704 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1705 | zlog_debug("del local es %s", es->esi_str); | |
1706 | ||
1707 | /* Delete all local EVPN ES routes from ESI table | |
1708 | * and schedule for processing (to withdraw from peers)) | |
1709 | */ | |
1710 | bgp_evpn_es_route_del_all(bgp, es); | |
1711 | ||
1712 | /* release all local ES EVIs associated with the ES */ | |
1713 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
1714 | evi_next_node, es_evi)) { | |
1715 | bgp_evpn_local_es_evi_do_del(es_evi); | |
1716 | } | |
1717 | ||
1718 | /* Clear local info associated with the ES and free it up if there is | |
1719 | * no remote reference | |
1720 | */ | |
1721 | bgp_evpn_es_local_info_clear(es); | |
1722 | } | |
1723 | ||
7904e9fd AK |
1724 | bool bgp_evpn_is_esi_local(esi_t *esi) |
1725 | { | |
1726 | struct bgp_evpn_es *es = NULL; | |
1727 | ||
1728 | /* Lookup ESI hash - should exist. */ | |
1729 | es = bgp_evpn_es_find(esi); | |
1730 | return es ? !!(es->flags & BGP_EVPNES_LOCAL) : false; | |
1731 | } | |
1732 | ||
c44ab6f1 AK |
1733 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
1734 | { | |
1735 | struct bgp_evpn_es *es = NULL; | |
1736 | ||
1737 | /* Lookup ESI hash - should exist. */ | |
1738 | es = bgp_evpn_es_find(esi); | |
1739 | if (!es) { | |
1740 | flog_warn(EC_BGP_EVPN_ESI, | |
1741 | "%u: ES %s missing at local ES DEL", | |
1742 | bgp->vrf_id, es->esi_str); | |
1743 | return -1; | |
1744 | } | |
1745 | ||
1746 | bgp_evpn_local_es_do_del(bgp, es); | |
1747 | return 0; | |
1748 | } | |
1749 | ||
1750 | /* Handle device to ES id association. Results in the creation of a local | |
1751 | * ES. | |
1752 | */ | |
1753 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 AK |
1754 | struct in_addr originator_ip, bool oper_up, |
1755 | uint16_t df_pref) | |
c44ab6f1 AK |
1756 | { |
1757 | char buf[ESI_STR_LEN]; | |
1758 | struct bgp_evpn_es *es; | |
1759 | bool new_es = true; | |
74e2bd89 | 1760 | bool regen_esr = false; |
c44ab6f1 AK |
1761 | |
1762 | /* create the new es */ | |
1763 | es = bgp_evpn_es_find(esi); | |
1764 | if (es) { | |
1765 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1766 | new_es = false; | |
1767 | } else { | |
1768 | es = bgp_evpn_es_new(bgp, esi); | |
1769 | if (!es) { | |
1770 | flog_err(EC_BGP_ES_CREATE, | |
1771 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
1772 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
1773 | return -1; | |
1774 | } | |
1775 | } | |
1776 | ||
1777 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1778 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u", es->esi_str, |
1779 | &originator_ip, df_pref); | |
c44ab6f1 AK |
1780 | |
1781 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
1782 | if (df_pref != es->df_pref) { |
1783 | es->df_pref = df_pref; | |
1784 | regen_esr = true; | |
1785 | } | |
c44ab6f1 AK |
1786 | bgp_evpn_es_local_info_set(bgp, es); |
1787 | ||
1788 | /* import all remote Type-4 routes in the ES table */ | |
1789 | if (new_es) | |
1790 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
1791 | true /* install */); | |
1792 | ||
1793 | /* create and advertise EAD-EVI routes for the ES - | |
1794 | * XXX - till an ES-EVI reference is created there is really nothing to | |
1795 | * advertise | |
1796 | */ | |
1797 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
1798 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
1799 | ||
1800 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI | |
1801 | * can be generated even if the link is inactive. | |
1802 | */ | |
1803 | if (oper_up) | |
74e2bd89 | 1804 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
1805 | else |
1806 | bgp_evpn_local_es_down(bgp, es); | |
1807 | ||
1808 | return 0; | |
1809 | } | |
1810 | ||
9e0c2fd1 AK |
1811 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
1812 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
1813 | { |
1814 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
1815 | struct listnode *node; | |
1816 | struct bgp_evpn_es_vtep *es_vtep; | |
1817 | bool first = true; | |
ec779825 | 1818 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
1819 | |
1820 | vtep_str[0] = '\0'; | |
1821 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1822 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 1823 | |
c44ab6f1 | 1824 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 1825 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 1826 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 1827 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
1828 | |
1829 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
1830 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
1831 | if (first) | |
c44ab6f1 | 1832 | first = false; |
9e0c2fd1 AK |
1833 | else |
1834 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 1835 | strlcat(vtep_str, |
ec779825 AK |
1836 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
1837 | sizeof(ip_buf)), | |
23d0a753 | 1838 | vtep_str_size); |
9e0c2fd1 AK |
1839 | strlcat(vtep_str, "(", vtep_str_size); |
1840 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
1841 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
1842 | } |
1843 | ||
1844 | return vtep_str; | |
1845 | } | |
1846 | ||
c44ab6f1 AK |
1847 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
1848 | struct bgp_evpn_es_vtep *es_vtep) | |
1849 | { | |
1850 | json_object *json_vtep_entry; | |
1851 | json_object *json_flags; | |
ec779825 | 1852 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
1853 | |
1854 | json_vtep_entry = json_object_new_object(); | |
1855 | ||
ec779825 AK |
1856 | json_object_string_add( |
1857 | json_vtep_entry, "vtep_ip", | |
1858 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
1859 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
1860 | BGP_EVPNES_VTEP_ACTIVE)) { | |
1861 | json_flags = json_object_new_array(); | |
1862 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1863 | json_array_string_add(json_flags, "esr"); | |
1864 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
1865 | json_array_string_add(json_flags, "active"); | |
1866 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
1867 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
1868 | json_object_int_add(json_vtep_entry, "dfPreference", | |
1869 | es_vtep->df_pref); | |
1870 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
1871 | es_vtep->df_pref); | |
1872 | } | |
c44ab6f1 AK |
1873 | } |
1874 | ||
1875 | json_object_array_add(json_vteps, | |
1876 | json_vtep_entry); | |
1877 | } | |
1878 | ||
74e2bd89 AK |
1879 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
1880 | struct bgp_evpn_es *es) | |
1881 | { | |
1882 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
1883 | struct listnode *node; | |
1884 | struct bgp_evpn_es_vtep *es_vtep; | |
1885 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
1886 | ||
1887 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1888 | vtep_flag_str[0] = '\0'; | |
1889 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1890 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
1891 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
1892 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
1893 | ||
1894 | if (!strlen(vtep_flag_str)) | |
1895 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
1896 | ||
ec779825 | 1897 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
1898 | vtep_flag_str); |
1899 | ||
1900 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1901 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
1902 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
1903 | sizeof(alg_buf)), | |
1904 | es_vtep->df_pref); | |
1905 | else | |
1906 | vty_out(vty, "\n"); | |
1907 | } | |
1908 | } | |
1909 | ||
c44ab6f1 AK |
1910 | static void bgp_evpn_es_show_entry(struct vty *vty, |
1911 | struct bgp_evpn_es *es, json_object *json) | |
1912 | { | |
1913 | char buf1[RD_ADDRSTRLEN]; | |
1914 | struct listnode *node; | |
1915 | struct bgp_evpn_es_vtep *es_vtep; | |
1916 | ||
1917 | if (json) { | |
1918 | json_object *json_vteps; | |
1919 | json_object *json_types; | |
1920 | ||
1921 | json_object_string_add(json, "esi", es->esi_str); | |
1922 | json_object_string_add(json, "rd", | |
1923 | prefix_rd2str(&es->prd, buf1, | |
1924 | sizeof(buf1))); | |
1925 | ||
1926 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
1927 | json_types = json_object_new_array(); | |
1928 | if (es->flags & BGP_EVPNES_LOCAL) | |
1929 | json_array_string_add(json_types, "local"); | |
1930 | if (es->flags & BGP_EVPNES_REMOTE) | |
1931 | json_array_string_add(json_types, "remote"); | |
1932 | json_object_object_add(json, "type", json_types); | |
1933 | } | |
1934 | ||
1935 | if (listcount(es->es_vtep_list)) { | |
1936 | json_vteps = json_object_new_array(); | |
1937 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
1938 | node, es_vtep)) { | |
1939 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
1940 | } | |
1941 | json_object_object_add(json, "vteps", json_vteps); | |
1942 | } | |
1943 | json_object_int_add(json, "vniCount", | |
1944 | listcount(es->es_evi_list)); | |
1945 | } else { | |
1946 | char type_str[4]; | |
1947 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
1948 | ||
1949 | type_str[0] = '\0'; | |
1950 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 1951 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 1952 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 1953 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 1954 | if (es->inconsistencies) |
9e0c2fd1 | 1955 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 1956 | |
9e0c2fd1 | 1957 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
1958 | |
1959 | if (es->flags & BGP_EVPNES_LOCAL) | |
1960 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
1961 | else | |
9e0c2fd1 | 1962 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
1963 | |
1964 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
1965 | es->esi_str, type_str, buf1, | |
1966 | listcount(es->es_evi_list), vtep_str); | |
1967 | } | |
1968 | } | |
1969 | ||
1970 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
1971 | struct bgp_evpn_es *es, json_object *json) | |
1972 | { | |
ec779825 | 1973 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 1974 | |
c44ab6f1 AK |
1975 | if (json) { |
1976 | json_object *json_flags; | |
1977 | json_object *json_incons; | |
74e2bd89 AK |
1978 | json_object *json_vteps; |
1979 | struct listnode *node; | |
1980 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
1981 | |
1982 | /* Add the "brief" info first */ | |
1983 | bgp_evpn_es_show_entry(vty, es, json); | |
1984 | if (es->flags & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI)) { | |
1985 | json_flags = json_object_new_array(); | |
1986 | if (es->flags & BGP_EVPNES_OPER_UP) | |
1987 | json_array_string_add(json_flags, "up"); | |
1988 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
1989 | json_array_string_add(json_flags, | |
1990 | "advertiseEVI"); | |
1991 | json_object_object_add(json, "flags", json_flags); | |
1992 | } | |
1993 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 1994 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 1995 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
1996 | json_object_int_add(json, "remoteVniCount", |
1997 | es->remote_es_evi_cnt); | |
229587fb AK |
1998 | json_object_int_add(json, "vrfCount", |
1999 | listcount(es->es_vrf_list)); | |
2000 | json_object_int_add(json, "macipPathCount", | |
2001 | listcount(es->macip_path_list)); | |
c44ab6f1 AK |
2002 | json_object_int_add(json, "inconsistentVniVtepCount", |
2003 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2004 | if (listcount(es->es_vtep_list)) { |
2005 | json_vteps = json_object_new_array(); | |
2006 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2007 | es_vtep)) { | |
2008 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2009 | } | |
2010 | json_object_object_add(json, "vteps", json_vteps); | |
2011 | } | |
c44ab6f1 AK |
2012 | if (es->inconsistencies) { |
2013 | json_incons = json_object_new_array(); | |
2014 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2015 | json_array_string_add(json_incons, | |
2016 | "vni-vtep-mismatch"); | |
2017 | json_object_object_add(json, "inconsistencies", | |
2018 | json_incons); | |
2019 | } | |
2020 | } else { | |
2021 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2022 | char type_str[4]; | |
c44ab6f1 AK |
2023 | char buf1[RD_ADDRSTRLEN]; |
2024 | ||
2025 | type_str[0] = '\0'; | |
2026 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2027 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2028 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2029 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2030 | |
c44ab6f1 AK |
2031 | if (es->flags & BGP_EVPNES_LOCAL) |
2032 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2033 | else | |
9e0c2fd1 | 2034 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2035 | |
2036 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2037 | vty_out(vty, " Type: %s\n", type_str); | |
2038 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2039 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2040 | if (es->flags & BGP_EVPNES_LOCAL) |
2041 | vty_out(vty, " Local ES DF preference: %u\n", | |
2042 | es->df_pref); | |
c44ab6f1 AK |
2043 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2044 | vty_out(vty, " Remote VNI Count: %d\n", | |
2045 | es->remote_es_evi_cnt); | |
229587fb AK |
2046 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
2047 | vty_out(vty, " MACIP Path Count: %d\n", | |
2048 | listcount(es->macip_path_list)); | |
c44ab6f1 AK |
2049 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2050 | es->incons_evi_vtep_cnt); | |
2051 | if (es->inconsistencies) { | |
2052 | incons_str[0] = '\0'; | |
2053 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2054 | strlcat(incons_str, "vni-vtep-mismatch", |
2055 | sizeof(incons_str)); | |
c44ab6f1 | 2056 | } else { |
9e0c2fd1 | 2057 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2058 | } |
2059 | vty_out(vty, " Inconsistencies: %s\n", | |
2060 | incons_str); | |
74e2bd89 AK |
2061 | if (listcount(es->es_vtep_list)) { |
2062 | vty_out(vty, " VTEPs:\n"); | |
2063 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2064 | } | |
c44ab6f1 AK |
2065 | vty_out(vty, "\n"); |
2066 | } | |
2067 | } | |
2068 | ||
2069 | /* Display all ESs */ | |
2070 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2071 | { | |
2072 | struct bgp_evpn_es *es; | |
9c7edc03 | 2073 | json_object *json_array = NULL; |
c44ab6f1 AK |
2074 | json_object *json = NULL; |
2075 | ||
2076 | if (uj) { | |
2077 | /* create an array of ESs */ | |
2078 | json_array = json_object_new_array(); | |
2079 | } else { | |
2080 | if (!detail) { | |
2081 | vty_out(vty, | |
2082 | "ES Flags: L local, R remote, I inconsistent\n"); | |
2083 | vty_out(vty, | |
2084 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2085 | vty_out(vty, | |
2086 | "%-30s %-5s %-21s %-8s %s\n", | |
2087 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2092 | if (uj) | |
2093 | /* create a separate json object for each ES */ | |
2094 | json = json_object_new_object(); | |
2095 | if (detail) | |
2096 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2097 | else | |
2098 | bgp_evpn_es_show_entry(vty, es, json); | |
2099 | /* add ES to the json array */ | |
2100 | if (uj) | |
2101 | json_object_array_add(json_array, json); | |
2102 | } | |
2103 | ||
2104 | /* print the array of json-ESs */ | |
2105 | if (uj) { | |
2106 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2107 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2108 | json_object_free(json_array); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | /* Display specific ES */ | |
2113 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2114 | { | |
2115 | struct bgp_evpn_es *es; | |
2116 | json_object *json = NULL; | |
2117 | ||
2118 | if (uj) | |
2119 | json = json_object_new_object(); | |
2120 | ||
2121 | es = bgp_evpn_es_find(esi); | |
2122 | if (es) { | |
2123 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2124 | } else { | |
2125 | if (!uj) | |
2126 | vty_out(vty, "ESI not found\n"); | |
2127 | } | |
2128 | ||
2129 | if (uj) { | |
2130 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2131 | json, JSON_C_TO_STRING_PRETTY)); | |
2132 | json_object_free(json); | |
2133 | } | |
2134 | } | |
2135 | ||
c589d847 AK |
2136 | /*****************************************************************************/ |
2137 | /* Ethernet Segment to VRF association - | |
2138 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2139 | * triggers the creation of an ES-VRF entry. | |
2140 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2141 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2142 | * a /32 or host route entry in the dataplane. If the destination of | |
2143 | * the host route is a remote-ES the route is programmed with the | |
2144 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2145 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2146 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2147 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2148 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2149 | * allowing for a faster failover. | |
2150 | * | |
2151 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2152 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2153 | * in that VRF. | |
2154 | */ | |
2155 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2156 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2157 | bool v4_nhg) | |
c589d847 | 2158 | { |
8bcb09a1 AK |
2159 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2160 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2161 | struct listnode *node; |
2162 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2163 | struct nexthop nh; |
2164 | struct zapi_nexthop *api_nh; | |
2165 | struct zapi_nhg api_nhg = {}; | |
2166 | ||
2167 | /* Skip installation of L3-NHG if host routes used */ | |
2168 | if (!nhg_id) | |
2169 | return; | |
c589d847 AK |
2170 | |
2171 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2172 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2173 | es_vrf->bgp_vrf->vrf_id, | |
2174 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2175 | ||
2176 | /* only the gateway ip changes for each NH. rest of the params | |
2177 | * are constant | |
2178 | */ | |
2179 | memset(&nh, 0, sizeof(nh)); | |
2180 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2181 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2182 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2183 | nh.weight = 1; | |
2184 | nh.type = | |
2185 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2186 | ||
2187 | api_nhg.id = nhg_id; | |
c589d847 | 2188 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2189 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2190 | continue; | |
2191 | ||
2192 | /* overwrite the gw */ | |
2193 | if (v4_nhg) | |
2194 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2195 | else | |
2196 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2197 | es_vtep->vtep_ip); | |
2198 | ||
2199 | /* convert to zapi format */ | |
2200 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2201 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2202 | ||
2203 | ++api_nhg.nexthop_num; | |
2204 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2205 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2206 | &es_vtep->vtep_ip, | |
2207 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2208 | } |
2209 | ||
8bcb09a1 AK |
2210 | if (!api_nhg.nexthop_num) |
2211 | return; | |
2212 | ||
2213 | if (api_nhg.nexthop_num > MULTIPATH_NUM) | |
2214 | return; | |
2215 | ||
2216 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); | |
c589d847 AK |
2217 | } |
2218 | ||
8bcb09a1 AK |
2219 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2220 | { | |
2221 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2222 | return false; | |
2223 | ||
2224 | /* Check socket. */ | |
2225 | if (!zclient || zclient->sock < 0) | |
2226 | return false; | |
2227 | ||
2228 | return true; | |
2229 | } | |
2230 | ||
2231 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2232 | { |
8bcb09a1 AK |
2233 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2234 | return; | |
2235 | ||
2236 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2237 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2238 | } | |
2239 | ||
2240 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2241 | bool v4_nhg) | |
2242 | { | |
2243 | struct zapi_nhg api_nhg = {}; | |
2244 | ||
2245 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2246 | ||
2247 | /* Skip installation of L3-NHG if host routes used */ | |
2248 | if (!api_nhg.id) | |
2249 | return; | |
2250 | ||
c589d847 | 2251 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2252 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2253 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2254 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2255 | ||
2256 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2257 | } | |
c589d847 | 2258 | |
8bcb09a1 AK |
2259 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2260 | { | |
2261 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2262 | return; | |
2263 | ||
2264 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2265 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2266 | } |
2267 | ||
2268 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2269 | { | |
2270 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2271 | return; | |
2272 | ||
2273 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2274 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2275 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2276 | es_vrf->nhg_id); | |
2277 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2278 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
2279 | } | |
2280 | ||
2281 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2282 | { | |
2283 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2284 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2285 | return; | |
2286 | } | |
2287 | ||
2288 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2289 | if (!update) | |
2290 | return; | |
2291 | } else { | |
2292 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2293 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2294 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2295 | es_vrf->nhg_id); | |
2296 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
2297 | } | |
2298 | ||
2299 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2300 | } | |
2301 | ||
2302 | /* when a VTEP is activated or de-activated against an ES associated | |
2303 | * VRFs' NHG needs to be updated | |
2304 | */ | |
2305 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2306 | { | |
2307 | struct bgp_evpn_es_vrf *es_vrf; | |
2308 | struct listnode *es_vrf_node; | |
2309 | ||
2310 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2311 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2312 | ||
2313 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2314 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2315 | } | |
2316 | ||
2317 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2318 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2319 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2320 | { | |
2321 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2322 | } | |
2323 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2324 | ||
2325 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2326 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2327 | { | |
2328 | /* Initialize the ES-VRF RB tree */ | |
2329 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2330 | } | |
2331 | ||
2332 | /* find the ES-VRF in the per-VRF RB tree */ | |
2333 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2334 | struct bgp *bgp_vrf) | |
2335 | { | |
2336 | struct bgp_evpn_es_vrf es_vrf; | |
2337 | ||
2338 | es_vrf.es = es; | |
2339 | ||
2340 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2341 | } | |
2342 | ||
2343 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2344 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2345 | struct bgp *bgp_vrf) | |
2346 | { | |
2347 | struct bgp_evpn_es_vrf *es_vrf; | |
2348 | ||
2349 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2350 | ||
2351 | es_vrf->es = es; | |
2352 | es_vrf->bgp_vrf = bgp_vrf; | |
2353 | ||
2354 | /* insert into the VRF-ESI rb tree */ | |
2355 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2356 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2357 | return NULL; | |
2358 | } | |
2359 | ||
2360 | /* add to the ES's VRF list */ | |
2361 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2362 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2363 | ||
2364 | /* setup the L3 NHG id for the ES */ | |
2365 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2366 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2367 | ||
c589d847 | 2368 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2369 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2370 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2371 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2372 | ||
2373 | return es_vrf; | |
2374 | } | |
2375 | ||
2376 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2377 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2378 | { | |
2379 | struct bgp_evpn_es *es = es_vrf->es; | |
2380 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2381 | ||
2382 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2383 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2384 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2385 | ||
2386 | /* Remove the NHG resources */ | |
2387 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2388 | if (es_vrf->nhg_id) | |
2389 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2390 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2391 | if (es_vrf->v6_nhg_id) |
2392 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2393 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2394 | |
2395 | /* remove from the ES's VRF list */ | |
2396 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2397 | ||
2398 | /* remove from the VRF-ESI rb tree */ | |
2399 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2400 | ||
2401 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2402 | } | |
2403 | ||
2404 | /* deref and delete if there are no references */ | |
2405 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2406 | { | |
2407 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2408 | ||
2409 | if (!es_vrf) | |
2410 | return; | |
2411 | ||
2412 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2413 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2414 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2415 | es_vrf->bgp_vrf->vrf_id); | |
2416 | ||
2417 | es_evi->es_vrf = NULL; | |
2418 | if (es_vrf->ref_cnt) | |
2419 | --es_vrf->ref_cnt; | |
2420 | ||
2421 | if (!es_vrf->ref_cnt) | |
2422 | bgp_evpn_es_vrf_delete(es_vrf); | |
2423 | } | |
2424 | ||
2425 | /* find or create and reference */ | |
2426 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2427 | { | |
2428 | struct bgp_evpn_es *es = es_evi->es; | |
2429 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2430 | struct bgp *old_bgp_vrf = NULL; | |
2431 | ||
2432 | if (es_vrf) | |
2433 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2434 | ||
2435 | if (old_bgp_vrf == bgp_vrf) | |
2436 | return; | |
2437 | ||
2438 | /* deref the old ES-VRF */ | |
2439 | bgp_evpn_es_vrf_deref(es_evi); | |
2440 | ||
2441 | if (!bgp_vrf) | |
2442 | return; | |
2443 | ||
2444 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2445 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2446 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2447 | ||
2448 | /* find-create the new ES-VRF */ | |
2449 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2450 | if (!es_vrf) | |
2451 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2452 | if (!es_vrf) | |
2453 | return; | |
2454 | ||
2455 | es_evi->es_vrf = es_vrf; | |
2456 | ++es_vrf->ref_cnt; | |
2457 | } | |
2458 | ||
2459 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2460 | * associated ES-EVI entries | |
2461 | */ | |
2462 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2463 | { | |
2464 | struct bgp_evpn_es_evi *es_evi; | |
2465 | ||
2466 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2467 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2468 | ||
2469 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2470 | bgp_evpn_es_vrf_deref(es_evi); | |
2471 | } | |
2472 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2473 | { | |
2474 | struct bgp_evpn_es_evi *es_evi; | |
2475 | ||
2476 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2477 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2478 | ||
2479 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2480 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2481 | } | |
2482 | ||
6348981a AK |
2483 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2484 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2485 | uint32_t *nhg_p) | |
2486 | { | |
2487 | esi_t *esi; | |
2488 | struct bgp_evpn_es *es; | |
2489 | struct bgp_evpn_es_vrf *es_vrf; | |
2490 | struct bgp_path_info *parent_pi; | |
2491 | struct bgp_node *rn; | |
2492 | struct prefix_evpn *evp; | |
2493 | struct bgp_path_info *mpinfo; | |
2494 | ||
2495 | *nhg_p = 0; | |
2496 | ||
229587fb AK |
2497 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
2498 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
2499 | return false; | |
2500 | ||
6348981a AK |
2501 | parent_pi = get_route_parent_evpn(pi); |
2502 | if (!parent_pi) | |
2503 | return false; | |
2504 | ||
2505 | rn = parent_pi->net; | |
2506 | if (!rn) | |
2507 | return false; | |
2508 | ||
2509 | evp = (struct prefix_evpn *)&rn->p; | |
2510 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2511 | return false; | |
2512 | ||
6348981a AK |
2513 | /* non-es path, use legacy-exploded multipath */ |
2514 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2515 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2516 | return false; | |
2517 | ||
2518 | /* if the ES-VRF is not setup or if the NHG has not been installed | |
2519 | * we cannot install the route yet, return a 0-NHG to indicate | |
2520 | * that | |
2521 | */ | |
2522 | es = bgp_evpn_es_find(esi); | |
2523 | if (!es) | |
2524 | return true; | |
2525 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2526 | if (!es_vrf || !(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2527 | return true; | |
2528 | ||
2529 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2530 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2531 | *nhg_p = es_vrf->v6_nhg_id; |
2532 | else | |
2533 | *nhg_p = es_vrf->nhg_id; | |
2534 | ||
2535 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2536 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
2537 | /* if any of the paths of have a different ESI we can't use | |
2538 | * the NHG associated with the ES. fallback to legacy-exploded | |
2539 | * multipath | |
2540 | */ | |
2541 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2542 | sizeof(*esi))) | |
2543 | return false; | |
2544 | } | |
2545 | ||
2546 | return true; | |
2547 | } | |
2548 | ||
229587fb AK |
2549 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2550 | struct bgp_evpn_es_vrf *es_vrf, | |
2551 | json_object *json) | |
2552 | { | |
2553 | struct bgp_evpn_es *es = es_vrf->es; | |
2554 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2555 | ||
2556 | if (json) { | |
2557 | json_object *json_types; | |
2558 | ||
2559 | json_object_string_add(json, "esi", es->esi_str); | |
2560 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2561 | ||
2562 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2563 | json_types = json_object_new_array(); | |
2564 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2565 | json_array_string_add(json_types, "active"); | |
2566 | json_object_object_add(json, "flags", json_types); | |
2567 | } | |
2568 | ||
2569 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2570 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2571 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2572 | } else { | |
2573 | char flags_str[4]; | |
2574 | ||
2575 | flags_str[0] = '\0'; | |
2576 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2577 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2578 | ||
2579 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2580 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2581 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2582 | } | |
2583 | } | |
2584 | ||
2585 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2586 | struct bgp_evpn_es *es) | |
2587 | { | |
2588 | json_object *json = NULL; | |
2589 | struct listnode *es_vrf_node; | |
2590 | struct bgp_evpn_es_vrf *es_vrf; | |
2591 | ||
2592 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2593 | /* create a separate json object for each ES-VRF */ | |
2594 | if (json_array) | |
2595 | json = json_object_new_object(); | |
2596 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2597 | /* add ES-VRF to the json array */ | |
2598 | if (json_array) | |
2599 | json_object_array_add(json_array, json); | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | /* Display all ES VRFs */ | |
2604 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
2605 | { | |
2606 | json_object *json_array = NULL; | |
2607 | ||
2608 | if (uj) { | |
2609 | /* create an array of ESs */ | |
2610 | json_array = json_object_new_array(); | |
2611 | } else { | |
2612 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
2613 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
2614 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
2615 | } | |
2616 | ||
2617 | if (es) { | |
2618 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2619 | } else { | |
2620 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
2621 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2622 | } | |
2623 | ||
2624 | /* print the array of json-ESs */ | |
2625 | if (uj) { | |
2626 | vty_out(vty, "%s\n", | |
2627 | json_object_to_json_string_ext( | |
2628 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2629 | json_object_free(json_array); | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | /* Display specific ES VRF */ | |
2634 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2635 | { | |
2636 | struct bgp_evpn_es *es; | |
2637 | ||
2638 | es = bgp_evpn_es_find(esi); | |
2639 | if (es) { | |
2640 | bgp_evpn_es_vrf_show(vty, uj, es); | |
2641 | } else { | |
2642 | if (!uj) | |
2643 | vty_out(vty, "ESI not found\n"); | |
2644 | } | |
2645 | } | |
2646 | ||
c44ab6f1 AK |
2647 | /*****************************************************************************/ |
2648 | /* Ethernet Segment to EVI association - | |
2649 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
2650 | * (bgpevpn->es_evi_rb_tree). | |
2651 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
2652 | * advertises an EAD-EVI (Type-1 EVPN) route | |
2653 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
2654 | * it. | |
2655 | */ | |
2656 | ||
2657 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
2658 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
2659 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
2660 | * VTEPs for which both routes have been rxed are activated. Activation | |
2661 | * creates a NHG in the parent ES. | |
2662 | */ | |
2663 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
2664 | { | |
2665 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
2666 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
2667 | ||
2668 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
2669 | } | |
2670 | ||
2671 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
2672 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2673 | { | |
2674 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2675 | ||
2676 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
2677 | ||
2678 | evi_vtep->es_evi = es_evi; | |
2679 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
2680 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
2681 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2682 | ||
2683 | return evi_vtep; | |
2684 | } | |
2685 | ||
2686 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2687 | { | |
2688 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
2689 | ||
2690 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
2691 | /* as long as there is some reference we can't free it */ | |
2692 | return; | |
2693 | ||
2694 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2695 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
2696 | } | |
2697 | ||
2698 | /* check if VTEP is already part of the list */ | |
2699 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
2700 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2701 | { | |
2702 | struct listnode *node = NULL; | |
2703 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2704 | ||
2705 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
2706 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
2707 | return evi_vtep; | |
2708 | } | |
2709 | return NULL; | |
2710 | } | |
2711 | ||
2712 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
2713 | * EAD-per-EVI routes are rxed from it. | |
2714 | */ | |
2715 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
2716 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2717 | { | |
2718 | bool old_active; | |
2719 | bool new_active; | |
2720 | ||
2721 | old_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2722 | ||
2723 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
2724 | * before it can be activated. | |
2725 | */ | |
2726 | if ((evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD) == | |
2727 | BGP_EVPN_EVI_VTEP_EAD) | |
2728 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2729 | else | |
2730 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2731 | ||
2732 | new_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2733 | ||
2734 | if (old_active == new_active) | |
2735 | return; | |
2736 | ||
2737 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2738 | zlog_debug("es %s evi %u vtep %pI4 %s", |
2739 | evi_vtep->es_evi->es->esi_str, | |
2740 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2741 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
2742 | |
2743 | /* add VTEP to parent es */ | |
2744 | if (new_active) { | |
2745 | struct bgp_evpn_es_vtep *es_vtep; | |
2746 | ||
2747 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
2748 | evi_vtep->vtep_ip, false /*esr*/, |
2749 | 0, 0); | |
c44ab6f1 AK |
2750 | evi_vtep->es_vtep = es_vtep; |
2751 | } else { | |
2752 | if (evi_vtep->es_vtep) { | |
2753 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
2754 | false /*esr*/); | |
2755 | evi_vtep->es_vtep = NULL; | |
2756 | } | |
2757 | } | |
2758 | /* queue up the parent es for background consistency checks */ | |
2759 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
2760 | } | |
2761 | ||
2762 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
2763 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
2764 | bool ead_es) | |
2765 | { | |
2766 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2767 | ||
2768 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
2769 | ||
2770 | if (!evi_vtep) | |
2771 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
2772 | ||
2773 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2774 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
2775 | evi_vtep->es_evi->es->esi_str, | |
2776 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2777 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
2778 | |
2779 | if (ead_es) | |
2780 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
2781 | else | |
2782 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
2783 | ||
2784 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
2785 | } | |
2786 | ||
2787 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
2788 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
2789 | bool ead_es) | |
2790 | { | |
2791 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2792 | ||
2793 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
2794 | if (!evi_vtep) | |
2795 | return; | |
2796 | ||
2797 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2798 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
2799 | evi_vtep->es_evi->es->esi_str, | |
2800 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2801 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
2802 | |
2803 | if (ead_es) | |
2804 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
2805 | else | |
2806 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
2807 | ||
2808 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
2809 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
2810 | } | |
2811 | ||
2812 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
2813 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
2814 | const struct bgp_evpn_es_evi *es_evi2) | |
2815 | { | |
2816 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
2817 | } | |
2818 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
2819 | ||
2820 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
2821 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
2822 | struct bgpevpn *vpn) | |
2823 | { | |
2824 | struct bgp_evpn_es_evi es_evi; | |
2825 | ||
2826 | es_evi.es = es; | |
2827 | ||
2828 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
2829 | } | |
2830 | ||
2831 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
2832 | * tables. | |
2833 | */ | |
2834 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
2835 | struct bgpevpn *vpn) | |
2836 | { | |
2837 | struct bgp_evpn_es_evi *es_evi; | |
2838 | ||
2839 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
2840 | ||
2841 | es_evi->es = es; | |
2842 | es_evi->vpn = vpn; | |
2843 | ||
2844 | /* Initialise the VTEP list */ | |
2845 | es_evi->es_evi_vtep_list = list_new(); | |
2846 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
2847 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
2848 | ||
2849 | /* insert into the VNI-ESI rb tree */ | |
2850 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
2851 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
2852 | return NULL; | |
2853 | } | |
2854 | ||
2855 | /* add to the ES's VNI list */ | |
2856 | listnode_init(&es_evi->es_listnode, es_evi); | |
2857 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
2858 | ||
c589d847 AK |
2859 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
2860 | ||
c44ab6f1 AK |
2861 | return es_evi; |
2862 | } | |
2863 | ||
2864 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
2865 | * up the memory. | |
2866 | */ | |
2867 | static void bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
2868 | { | |
2869 | struct bgp_evpn_es *es = es_evi->es; | |
2870 | struct bgpevpn *vpn = es_evi->vpn; | |
2871 | ||
2872 | /* cannot free the element as long as there is a local or remote | |
2873 | * reference | |
2874 | */ | |
2875 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
2876 | return; | |
2877 | ||
c589d847 AK |
2878 | bgp_evpn_es_vrf_deref(es_evi); |
2879 | ||
c44ab6f1 AK |
2880 | /* remove from the ES's VNI list */ |
2881 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
2882 | ||
2883 | /* remove from the VNI-ESI rb tree */ | |
2884 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
2885 | ||
2886 | /* free the VTEP list */ | |
2887 | list_delete(&es_evi->es_evi_vtep_list); | |
2888 | ||
2889 | /* remove from the VNI-ESI rb tree */ | |
2890 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
2891 | } | |
2892 | ||
2893 | /* init local info associated with the ES-EVI */ | |
2894 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
2895 | { | |
2896 | struct bgpevpn *vpn = es_evi->vpn; | |
2897 | ||
2898 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2899 | return; | |
2900 | ||
2901 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
2902 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
2903 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
2904 | } | |
2905 | ||
2906 | /* clear any local info associated with the ES-EVI */ | |
2907 | static void bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
2908 | { | |
2909 | struct bgpevpn *vpn = es_evi->vpn; | |
2910 | ||
2911 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2912 | return; | |
2913 | ||
2914 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
2915 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
2916 | ||
2917 | bgp_evpn_es_evi_free(es_evi); | |
2918 | } | |
2919 | ||
2920 | /* eval remote info associated with the ES */ | |
2921 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
2922 | { | |
2923 | struct bgp_evpn_es *es = es_evi->es; | |
2924 | ||
2925 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
2926 | if (listcount(es_evi->es_evi_vtep_list)) { | |
2927 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
2928 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
2929 | ++es->remote_es_evi_cnt; | |
2930 | /* set remote on the parent es */ | |
2931 | bgp_evpn_es_remote_info_re_eval(es); | |
2932 | } | |
2933 | } else { | |
2934 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
2935 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
2936 | if (es->remote_es_evi_cnt) | |
2937 | --es->remote_es_evi_cnt; | |
2938 | bgp_evpn_es_evi_free(es_evi); | |
2939 | /* check if "remote" can be cleared from the | |
2940 | * parent es. | |
2941 | */ | |
2942 | bgp_evpn_es_remote_info_re_eval(es); | |
2943 | } | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | static void bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
2948 | { | |
2949 | struct prefix_evpn p; | |
2950 | struct bgp_evpn_es *es = es_evi->es; | |
2951 | struct bgp *bgp; | |
2952 | ||
2953 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2954 | return; | |
2955 | ||
2956 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2957 | zlog_debug("del local es %s evi %u", | |
2958 | es_evi->es->esi_str, | |
2959 | es_evi->vpn->vni); | |
2960 | ||
2961 | bgp = bgp_get_evpn(); | |
2962 | ||
2963 | if (bgp) { | |
2964 | /* update EAD-ES with new list of VNIs */ | |
2965 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
2966 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
2967 | &es->esi, es->originator_ip); | |
2968 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
2969 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
2970 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
2971 | bgp->vrf_id, es->esi_str, | |
2972 | es_evi->vpn->vni); | |
2973 | } | |
2974 | ||
2975 | /* withdraw and delete EAD-EVI */ | |
2976 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
2977 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
2978 | &es->esi, es->originator_ip); | |
2979 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
2980 | es, es_evi->vpn, &p)) | |
2981 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
2982 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
2983 | bgp->vrf_id, es->esi_str, | |
2984 | es_evi->vpn->vni); | |
2985 | } | |
2986 | } | |
2987 | ||
2988 | bgp_evpn_es_evi_local_info_clear(es_evi); | |
185fb14a | 2989 | |
c44ab6f1 AK |
2990 | } |
2991 | ||
2992 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
2993 | { | |
2994 | struct bgpevpn *vpn; | |
2995 | struct bgp_evpn_es *es; | |
2996 | struct bgp_evpn_es_evi *es_evi; | |
2997 | char buf[ESI_STR_LEN]; | |
2998 | ||
2999 | es = bgp_evpn_es_find(esi); | |
3000 | if (!es) { | |
3001 | flog_err( | |
3002 | EC_BGP_ES_CREATE, | |
3003 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3004 | bgp->vrf_id, vni, | |
3005 | esi_to_str(esi, buf, sizeof(buf))); | |
3006 | return -1; | |
3007 | } | |
3008 | ||
3009 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3010 | if (!vpn) { | |
3011 | flog_err( | |
3012 | EC_BGP_ES_CREATE, | |
3013 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3014 | bgp->vrf_id, vni, es->esi_str); | |
3015 | return -1; | |
3016 | } | |
3017 | ||
3018 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3019 | if (!es_evi) { | |
3020 | flog_err( | |
3021 | EC_BGP_ES_CREATE, | |
3022 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3023 | bgp->vrf_id, vni, es->esi_str); | |
3024 | return -1; | |
3025 | } | |
3026 | ||
3027 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3028 | return 0; | |
3029 | } | |
3030 | ||
3031 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3032 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3033 | { | |
3034 | struct bgpevpn *vpn; | |
3035 | struct prefix_evpn p; | |
3036 | struct bgp_evpn_es *es; | |
3037 | struct bgp_evpn_es_evi *es_evi; | |
3038 | char buf[ESI_STR_LEN]; | |
3039 | ||
3040 | es = bgp_evpn_es_find(esi); | |
3041 | if (!es) { | |
3042 | flog_err( | |
3043 | EC_BGP_ES_CREATE, | |
3044 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3045 | bgp->vrf_id, vni, | |
3046 | esi_to_str(esi, buf, sizeof(buf))); | |
3047 | return -1; | |
3048 | } | |
3049 | ||
3050 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3051 | if (!vpn) { | |
3052 | flog_err( | |
3053 | EC_BGP_ES_CREATE, | |
3054 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3055 | bgp->vrf_id, vni, es->esi_str); | |
3056 | return -1; | |
3057 | } | |
3058 | ||
3059 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3060 | zlog_debug("add local es %s evi %u", | |
3061 | es->esi_str, vni); | |
3062 | ||
3063 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3064 | ||
3065 | if (es_evi) { | |
3066 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3067 | /* dup */ | |
3068 | return 0; | |
3069 | } else { | |
3070 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3071 | if (!es_evi) | |
3072 | return -1; | |
3073 | } | |
3074 | ||
3075 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3076 | ||
3077 | /* generate an EAD-EVI for this new VNI */ | |
3078 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3079 | &es->esi, es->originator_ip); | |
3080 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3081 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) | |
3082 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3083 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3084 | bgp->vrf_id, es->esi_str, vni); | |
3085 | } | |
3086 | ||
3087 | /* update EAD-ES */ | |
3088 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3089 | &es->esi, es->originator_ip); | |
3090 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
3091 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3092 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3093 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3094 | bgp->vrf_id, es->esi_str, vni); | |
3095 | } | |
3096 | ||
3097 | return 0; | |
3098 | } | |
3099 | ||
3100 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3101 | * ES-EVI is implicity created on first VTEP's reference. | |
3102 | */ | |
3103 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3104 | const struct prefix_evpn *p) | |
3105 | { | |
3106 | char buf[ESI_STR_LEN]; | |
3107 | struct bgp_evpn_es *es; | |
3108 | struct bgp_evpn_es_evi *es_evi; | |
3109 | bool ead_es; | |
3110 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3111 | ||
3112 | if (!vpn) | |
3113 | /* local EAD-ES need not be sent back to zebra */ | |
3114 | return 0; | |
3115 | ||
3116 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3117 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3118 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3119 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3120 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3121 | |
3122 | es = bgp_evpn_es_find(esi); | |
3123 | if (!es) { | |
3124 | es = bgp_evpn_es_new(bgp, esi); | |
3125 | if (!es) { | |
3126 | flog_err(EC_BGP_ES_CREATE, | |
3127 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3128 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3129 | return -1; | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3134 | if (!es_evi) { | |
3135 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3136 | if (!es_evi) { | |
45a859f1 | 3137 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3138 | return -1; |
3139 | } | |
3140 | } | |
3141 | ||
3142 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3143 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3144 | ead_es); | |
3145 | ||
3146 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3147 | return 0; | |
3148 | } | |
3149 | ||
3150 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3151 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3152 | */ | |
3153 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3154 | const struct prefix_evpn *p) | |
3155 | { | |
3156 | char buf[ESI_STR_LEN]; | |
3157 | struct bgp_evpn_es *es; | |
3158 | struct bgp_evpn_es_evi *es_evi; | |
3159 | bool ead_es; | |
3160 | ||
3161 | if (!vpn) | |
3162 | /* local EAD-ES need not be sent back to zebra */ | |
3163 | return 0; | |
3164 | ||
3165 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3166 | zlog_debug( |
3167 | "del remote %s es %s evi %u vtep %pI4", | |
3168 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3169 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3170 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3171 | |
3172 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
3173 | if (!es) | |
3174 | /* XXX - error logs */ | |
3175 | return 0; | |
3176 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3177 | if (!es_evi) | |
3178 | /* XXX - error logs */ | |
3179 | return 0; | |
3180 | ||
3181 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3182 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3183 | ead_es); | |
3184 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3185 | return 0; | |
3186 | } | |
3187 | ||
3188 | /* Initialize the ES tables maintained per-L2_VNI */ | |
3189 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3190 | { | |
3191 | /* Initialize the ES-EVI RB tree */ | |
3192 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3193 | ||
3194 | /* Initialize the local list maintained for quick walks by type */ | |
3195 | vpn->local_es_evi_list = list_new(); | |
3196 | listset_app_node_mem(vpn->local_es_evi_list); | |
3197 | } | |
3198 | ||
3199 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3200 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3201 | { | |
3202 | struct bgp_evpn_es_evi *es_evi; | |
3203 | struct bgp_evpn_es_evi *es_evi_next; | |
3204 | ||
3205 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3206 | &vpn->es_evi_rb_tree, es_evi_next) { | |
3207 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3208 | } | |
3209 | ||
3210 | list_delete(&vpn->local_es_evi_list); | |
3211 | } | |
3212 | ||
3213 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3214 | struct bgp_evpn_es_evi *es_evi, |
3215 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3216 | { |
3217 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3218 | struct listnode *node; | |
3219 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3220 | bool first = true; | |
ec779825 | 3221 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3222 | |
3223 | vtep_str[0] = '\0'; | |
3224 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3225 | vtep_flag_str[0] = '\0'; | |
3226 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3227 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3228 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3229 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3230 | |
9e0c2fd1 AK |
3231 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3232 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3233 | if (first) | |
c44ab6f1 | 3234 | first = false; |
9e0c2fd1 AK |
3235 | else |
3236 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3237 | strlcat(vtep_str, |
ec779825 AK |
3238 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3239 | sizeof(ip_buf)), | |
23d0a753 | 3240 | vtep_str_size); |
9e0c2fd1 AK |
3241 | strlcat(vtep_str, "(", vtep_str_size); |
3242 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3243 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3244 | } |
3245 | ||
3246 | return vtep_str; | |
3247 | } | |
3248 | ||
3249 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3250 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3251 | { | |
3252 | json_object *json_vtep_entry; | |
3253 | json_object *json_flags; | |
ec779825 | 3254 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3255 | |
3256 | json_vtep_entry = json_object_new_object(); | |
3257 | ||
ec779825 AK |
3258 | json_object_string_add( |
3259 | json_vtep_entry, "vtep_ip", | |
3260 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3261 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3262 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3263 | json_flags = json_object_new_array(); | |
3264 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3265 | json_array_string_add(json_flags, "ead-per-es"); | |
3266 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
3267 | json_array_string_add(json_flags, "ed-per-evi"); | |
3268 | json_object_object_add(json_vtep_entry, | |
3269 | "flags", json_flags); | |
3270 | } | |
3271 | ||
3272 | json_object_array_add(json_vteps, | |
3273 | json_vtep_entry); | |
3274 | } | |
3275 | ||
3276 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3277 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3278 | { | |
3279 | struct listnode *node; | |
3280 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3281 | ||
3282 | if (json) { | |
3283 | json_object *json_vteps; | |
3284 | json_object *json_types; | |
3285 | ||
3286 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3287 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3288 | ||
3289 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3290 | BGP_EVPNES_EVI_REMOTE)) { | |
3291 | json_types = json_object_new_array(); | |
3292 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3293 | json_array_string_add(json_types, "local"); | |
3294 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3295 | json_array_string_add(json_types, "remote"); | |
3296 | json_object_object_add(json, "type", json_types); | |
3297 | } | |
3298 | ||
3299 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3300 | json_vteps = json_object_new_array(); | |
3301 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3302 | node, evi_vtep)) { | |
3303 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3304 | evi_vtep); | |
3305 | } | |
3306 | json_object_object_add(json, "vteps", json_vteps); | |
3307 | } | |
3308 | } else { | |
3309 | char type_str[4]; | |
3310 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3311 | ||
3312 | type_str[0] = '\0'; | |
3313 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3314 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3315 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3316 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3317 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3318 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3319 | |
9e0c2fd1 | 3320 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3321 | |
3322 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3323 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3324 | type_str, vtep_str); | |
3325 | } | |
3326 | } | |
3327 | ||
3328 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3329 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3330 | { | |
3331 | if (json) { | |
3332 | json_object *json_flags; | |
3333 | ||
3334 | /* Add the "brief" info first */ | |
3335 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3336 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3337 | json_flags = json_object_new_array(); | |
3338 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3339 | json_object_object_add(json, "flags", json_flags); | |
3340 | } | |
3341 | } else { | |
3342 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3343 | char type_str[4]; | |
3344 | ||
3345 | type_str[0] = '\0'; | |
3346 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3347 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3348 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3349 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3350 | |
9e0c2fd1 | 3351 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3352 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3353 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3354 | |
3355 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3356 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3357 | vty_out(vty, " Type: %s\n", type_str); | |
3358 | vty_out(vty, " Inconsistencies: %s\n", | |
3359 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3360 | "es-vtep-mismatch":"-"); | |
3361 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3362 | vty_out(vty, "\n"); | |
3363 | } | |
3364 | } | |
3365 | ||
3366 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3367 | json_object *json_array, bool detail) | |
3368 | { | |
3369 | struct bgp_evpn_es_evi *es_evi; | |
3370 | json_object *json = NULL; | |
3371 | ||
3372 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3373 | if (json_array) | |
3374 | /* create a separate json object for each ES */ | |
3375 | json = json_object_new_object(); | |
3376 | if (detail) | |
3377 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3378 | else | |
3379 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3380 | /* add ES to the json array */ | |
3381 | if (json_array) | |
3382 | json_object_array_add(json_array, json); | |
3383 | } | |
3384 | } | |
3385 | ||
3386 | struct es_evi_show_ctx { | |
3387 | struct vty *vty; | |
3388 | json_object *json; | |
3389 | int detail; | |
3390 | }; | |
3391 | ||
3392 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3393 | void *ctxt) | |
3394 | { | |
3395 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3396 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3397 | ||
3398 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3399 | } | |
3400 | ||
3401 | /* Display all ES EVIs */ | |
3402 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3403 | { | |
3404 | json_object *json_array = NULL; | |
3405 | struct es_evi_show_ctx wctx; | |
3406 | struct bgp *bgp; | |
3407 | ||
3408 | if (uj) { | |
3409 | /* create an array of ES-EVIs */ | |
3410 | json_array = json_object_new_array(); | |
3411 | } | |
3412 | ||
3413 | wctx.vty = vty; | |
3414 | wctx.json = json_array; | |
3415 | wctx.detail = detail; | |
3416 | ||
3417 | bgp = bgp_get_evpn(); | |
3418 | ||
3419 | if (!json_array && !detail) { | |
3420 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3421 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3422 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3423 | "VNI", "ESI", "Flags", "VTEPs"); | |
3424 | } | |
3425 | ||
3426 | if (bgp) | |
3427 | hash_iterate(bgp->vnihash, | |
3428 | (void (*)(struct hash_bucket *, | |
3429 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3430 | &wctx); | |
3431 | if (uj) { | |
3432 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3433 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3434 | json_object_free(json_array); | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* Display specific ES EVI */ | |
3439 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3440 | bool uj, bool detail) | |
3441 | { | |
3442 | struct bgpevpn *vpn = NULL; | |
3443 | json_object *json_array = NULL; | |
3444 | struct bgp *bgp; | |
3445 | ||
3446 | if (uj) { | |
3447 | /* create an array of ES-EVIs */ | |
3448 | json_array = json_object_new_array(); | |
3449 | } | |
3450 | ||
3451 | bgp = bgp_get_evpn(); | |
3452 | if (bgp) | |
3453 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3454 | ||
3455 | if (vpn) { | |
3456 | if (!json_array && !detail) { | |
3457 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3458 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3459 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3460 | "VNI", "ESI", "Flags", "VTEPs"); | |
3461 | } | |
3462 | ||
3463 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3464 | } else { | |
3465 | if (!uj) | |
3466 | vty_out(vty, "VNI not found\n"); | |
3467 | } | |
3468 | ||
3469 | if (uj) { | |
3470 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3471 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3472 | json_object_free(json_array); | |
3473 | } | |
3474 | } | |
3475 | ||
3476 | /***************************************************************************** | |
3477 | * Ethernet Segment Consistency checks | |
3478 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3479 | * an inconsistency is detected it is simply logged (and displayed via | |
3480 | * show commands) at this point. A more drastic action can be executed (based | |
3481 | * on user config) in the future. | |
3482 | */ | |
3483 | /* queue up the es for background consistency checks */ | |
3484 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3485 | { | |
3486 | if (!bgp_mh_info->consistency_checking) | |
3487 | /* consistency checking is not enabled */ | |
3488 | return; | |
3489 | ||
3490 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3491 | /* already queued for consistency checking */ | |
3492 | return; | |
3493 | ||
3494 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3495 | listnode_init(&es->pend_es_listnode, es); | |
3496 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3497 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3498 | &es->pend_es_listnode); | |
3499 | } | |
3500 | ||
3501 | /* pull the ES from the consistency check list */ | |
3502 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3503 | { | |
3504 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3505 | return; | |
3506 | ||
3507 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3508 | list_delete_node(bgp_mh_info->pend_es_list, | |
3509 | &es->pend_es_listnode); | |
3510 | } | |
3511 | ||
3512 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3513 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3514 | struct bgp_evpn_es_evi *es_evi) | |
3515 | { | |
3516 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3517 | struct listnode *node; | |
3518 | uint32_t vtep_cnt = 0; | |
3519 | ||
3520 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3521 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3522 | ++vtep_cnt; | |
3523 | } | |
3524 | ||
3525 | return vtep_cnt; | |
3526 | } | |
3527 | ||
3528 | /* Number of active VTEPs associated with the ES */ | |
3529 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3530 | { | |
3531 | struct listnode *node; | |
3532 | uint32_t vtep_cnt = 0; | |
3533 | struct bgp_evpn_es_vtep *es_vtep; | |
3534 | ||
3535 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
3536 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3537 | ++vtep_cnt; | |
3538 | } | |
3539 | ||
3540 | return vtep_cnt; | |
3541 | } | |
3542 | ||
3543 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
3544 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
3545 | { | |
3546 | struct listnode *node; | |
3547 | struct bgp_evpn_es_vtep *next_es_vtep; | |
3548 | ||
3549 | if (es_vtep) | |
3550 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
3551 | else | |
3552 | node = listhead(es->es_vtep_list); | |
3553 | ||
3554 | for (; node; node = listnextnode_unchecked(node)) { | |
3555 | next_es_vtep = listgetdata(node); | |
3556 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3557 | return next_es_vtep; | |
3558 | } | |
3559 | ||
3560 | return NULL; | |
3561 | } | |
3562 | ||
3563 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
3564 | struct bgp_evpn_es_evi *es_evi, | |
3565 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3566 | { | |
3567 | struct listnode *node; | |
3568 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
3569 | ||
3570 | if (evi_vtep) | |
3571 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
3572 | else | |
3573 | node = listhead(es_evi->es_evi_vtep_list); | |
3574 | ||
3575 | for (; node; node = listnextnode_unchecked(node)) { | |
3576 | next_evi_vtep = listgetdata(node); | |
3577 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3578 | return next_evi_vtep; | |
3579 | } | |
3580 | ||
3581 | return NULL; | |
3582 | } | |
3583 | ||
3584 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
3585 | { | |
3586 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
3587 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3588 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
3589 | es_evi->es->esi_str, | |
3590 | es_evi->vpn->vni); | |
3591 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3592 | ||
3593 | /* update parent ES with the incosistency setting */ | |
3594 | if (!es_evi->es->incons_evi_vtep_cnt && | |
3595 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3596 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
3597 | es_evi->es->esi_str); | |
3598 | ++es_evi->es->incons_evi_vtep_cnt; | |
3599 | SET_FLAG(es_evi->es->inconsistencies, | |
3600 | BGP_EVPNES_INCONS_VTEP_LIST); | |
3601 | } | |
3602 | } | |
3603 | ||
3604 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
3605 | { | |
3606 | int proc_cnt = 0; | |
3607 | int es_active_vtep_cnt; | |
3608 | int evi_active_vtep_cnt; | |
3609 | struct bgp_evpn_es_evi *es_evi; | |
3610 | struct listnode *evi_node; | |
3611 | struct bgp_evpn_es_vtep *es_vtep; | |
3612 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3613 | ||
3614 | /* reset the inconsistencies and re-evaluate */ | |
3615 | es->incons_evi_vtep_cnt = 0; | |
3616 | es->inconsistencies = 0; | |
3617 | ||
3618 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
3619 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
3620 | evi_node, es_evi)) { | |
3621 | ++proc_cnt; | |
3622 | ||
3623 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
3624 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3625 | ||
3626 | evi_active_vtep_cnt = | |
3627 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
3628 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
3629 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3630 | continue; | |
3631 | } | |
3632 | ||
3633 | if (!es_active_vtep_cnt) | |
3634 | continue; | |
3635 | ||
3636 | es_vtep = NULL; | |
3637 | evi_vtep = NULL; | |
3638 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
3639 | es, es_vtep))) { | |
3640 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
3641 | evi_vtep); | |
3642 | if (!evi_vtep) { | |
3643 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3644 | break; | |
3645 | } | |
3646 | if (es_vtep->vtep_ip.s_addr != | |
3647 | evi_vtep->vtep_ip.s_addr) { | |
3648 | /* inconsistency detected; set it and move | |
3649 | * to the next evi | |
3650 | */ | |
3651 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3652 | break; | |
3653 | } | |
3654 | } | |
3655 | } | |
3656 | ||
3657 | return proc_cnt; | |
3658 | } | |
3659 | ||
3660 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
3661 | { | |
3662 | int proc_cnt = 0; | |
3663 | int es_cnt = 0; | |
3664 | struct listnode *node; | |
3665 | struct listnode *nextnode; | |
3666 | struct bgp_evpn_es *es; | |
3667 | ||
3668 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
3669 | node, nextnode, es)) { | |
3670 | ++es_cnt; | |
3671 | ++proc_cnt; | |
3672 | /* run consistency checks on the ES and remove it from the | |
3673 | * pending list | |
3674 | */ | |
3675 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
3676 | bgp_evpn_es_cons_checks_pend_del(es); | |
3677 | if (proc_cnt > 500) | |
3678 | break; | |
3679 | } | |
3680 | ||
3681 | /* restart the timer */ | |
3682 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3683 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3684 | &bgp_mh_info->t_cons_check); | |
3685 | ||
3686 | return 0; | |
3687 | } | |
3688 | ||
3689 | /*****************************************************************************/ | |
3690 | void bgp_evpn_mh_init(void) | |
3691 | { | |
3692 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
3693 | ||
3694 | /* setup ES tables */ | |
3695 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
3696 | /* local ES list */ | |
3697 | bgp_mh_info->local_es_list = list_new(); | |
3698 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
3699 | /* list of ESs with pending processing */ | |
3700 | bgp_mh_info->pend_es_list = list_new(); | |
3701 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
3702 | ||
3703 | /* config knobs - XXX add cli to control it */ | |
3704 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
3705 | bgp_mh_info->consistency_checking = true; | |
8bcb09a1 AK |
3706 | bgp_mh_info->install_l3nhg = true; |
3707 | bgp_mh_info->host_routes_use_l3nhg = false; | |
c44ab6f1 AK |
3708 | |
3709 | if (bgp_mh_info->consistency_checking) | |
3710 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, | |
3711 | NULL, BGP_EVPN_CONS_CHECK_INTERVAL, | |
3712 | &bgp_mh_info->t_cons_check); | |
3713 | ||
3714 | memset(&zero_esi_buf, 0, sizeof(esi_t)); | |
3715 | } | |
3716 | ||
3717 | void bgp_evpn_mh_finish(void) | |
3718 | { | |
3719 | struct bgp_evpn_es *es; | |
3720 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 3721 | |
45a859f1 AK |
3722 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
3723 | zlog_debug("evpn mh finish"); | |
3724 | ||
3725 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
3726 | es_next) { | |
3727 | bgp_evpn_es_local_info_clear(es); | |
c44ab6f1 | 3728 | } |
b3d6bc6e | 3729 | thread_cancel(&bgp_mh_info->t_cons_check); |
c44ab6f1 AK |
3730 | list_delete(&bgp_mh_info->local_es_list); |
3731 | list_delete(&bgp_mh_info->pend_es_list); | |
3732 | ||
3733 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
3734 | } |