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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); | |
2eef4f20 AK |
72 | static void |
73 | bgp_evpn_es_path_update_on_vtep_chg(struct bgp_evpn_es_vtep *es_vtep, | |
74 | bool active); | |
c44ab6f1 AK |
75 | |
76 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
77 | ||
78 | /****************************************************************************** | |
79 | * per-ES (Ethernet Segment) routing table | |
80 | * | |
81 | * Following routes are added to the ES's routing table - | |
82 | * 1. Local and remote ESR (Type-4) | |
83 | * 2. Local EAD-per-ES (Type-1). | |
84 | * | |
85 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
86 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
87 | * being added to same ES). | |
88 | * | |
89 | * Note the following routes go into the VNI routing table (instead of the | |
90 | * ES routing table) - | |
91 | * 1. Remote EAD-per-ES | |
92 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 93 | */ |
185fb14a | 94 | |
c44ab6f1 AK |
95 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
96 | * installed in the ES's routing table. | |
185fb14a | 97 | */ |
c44ab6f1 | 98 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
99 | struct bgp_evpn_es *es, |
100 | struct bgp_dest *dest) | |
185fb14a AK |
101 | { |
102 | int ret = 0; | |
103 | afi_t afi = AFI_L2VPN; | |
104 | safi_t safi = SAFI_EVPN; | |
105 | struct bgp_path_info *old_select; /* old best */ | |
106 | struct bgp_path_info *new_select; /* new best */ | |
107 | struct bgp_path_info_pair old_and_new; | |
108 | ||
109 | /* Compute the best path. */ | |
09319b4e DS |
110 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
111 | afi, safi); | |
185fb14a AK |
112 | old_select = old_and_new.old; |
113 | new_select = old_and_new.new; | |
114 | ||
115 | /* | |
116 | * If the best path hasn't changed - see if something needs to be | |
117 | * updated | |
118 | */ | |
119 | if (old_select && old_select == new_select | |
09319b4e DS |
120 | && old_select->type == ZEBRA_ROUTE_BGP |
121 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
122 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
123 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
124 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 125 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
126 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
127 | true /*esr*/, | |
128 | old_select->attr->df_alg, | |
129 | old_select->attr->df_pref); | |
185fb14a AK |
130 | } |
131 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 132 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
133 | return ret; |
134 | } | |
135 | ||
136 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 137 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 138 | |
c44ab6f1 | 139 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
140 | * into the zebra RIB. |
141 | */ | |
142 | if (old_select || new_select) | |
09319b4e | 143 | bgp_bump_version(dest); |
185fb14a AK |
144 | |
145 | if (old_select) | |
09319b4e | 146 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 147 | if (new_select) { |
09319b4e DS |
148 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
149 | bgp_path_info_unset_flag(dest, new_select, | |
150 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
151 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
152 | } | |
153 | ||
154 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 155 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
156 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
157 | true /*esr */, new_select->attr->df_alg, | |
158 | new_select->attr->df_pref); | |
185fb14a AK |
159 | } else { |
160 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
161 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
162 | bgp_evpn_es_vtep_del( | |
163 | bgp, es, old_select->attr->nexthop, | |
164 | true /*esr*/); | |
185fb14a AK |
165 | } |
166 | ||
167 | /* Clear any route change flags. */ | |
09319b4e | 168 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
169 | |
170 | /* Reap old select bgp_path_info, if it has been removed */ | |
171 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 172 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
173 | |
174 | return ret; | |
175 | } | |
176 | ||
c44ab6f1 AK |
177 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
178 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
179 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
180 | struct bgp_path_info *parent_pi) | |
181 | { | |
182 | int ret = 0; | |
09319b4e | 183 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
184 | struct bgp_path_info *pi = NULL; |
185 | struct attr *attr_new = NULL; | |
186 | ||
187 | /* Create (or fetch) route within the VNI. | |
188 | * NOTE: There is no RD here. | |
189 | */ | |
09319b4e | 190 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
191 | |
192 | /* Check if route entry is already present. */ | |
09319b4e | 193 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
194 | if (pi->extra |
195 | && (struct bgp_path_info *)pi->extra->parent == | |
196 | parent_pi) | |
197 | break; | |
198 | ||
199 | if (!pi) { | |
200 | /* Add (or update) attribute to hash. */ | |
201 | attr_new = bgp_attr_intern(parent_pi->attr); | |
202 | ||
203 | /* Create new route with its attribute. */ | |
204 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 205 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
206 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
207 | bgp_path_info_extra_get(pi); | |
208 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
209 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
210 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
211 | } else { |
212 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
213 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 214 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
215 | return 0; |
216 | } | |
217 | /* The attribute has changed. */ | |
218 | /* Add (or update) attribute to hash. */ | |
219 | attr_new = bgp_attr_intern(parent_pi->attr); | |
220 | ||
221 | /* Restore route, if needed. */ | |
222 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 223 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
224 | |
225 | /* Mark if nexthop has changed. */ | |
226 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
227 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
228 | ||
229 | /* Unintern existing, set to new. */ | |
230 | bgp_attr_unintern(&pi->attr); | |
231 | pi->attr = attr_new; | |
232 | pi->uptime = bgp_clock(); | |
233 | } | |
234 | ||
235 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 236 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 237 | |
09319b4e | 238 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
239 | |
240 | return ret; | |
241 | } | |
242 | ||
243 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
244 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
245 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
246 | { | |
247 | int ret; | |
09319b4e | 248 | struct bgp_dest *dest; |
c44ab6f1 AK |
249 | struct bgp_path_info *pi; |
250 | ||
251 | if (!es->route_table) | |
252 | return 0; | |
253 | ||
254 | /* Locate route within the ESI. | |
255 | * NOTE: There is no RD here. | |
256 | */ | |
09319b4e DS |
257 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
258 | if (!dest) | |
c44ab6f1 AK |
259 | return 0; |
260 | ||
261 | /* Find matching route entry. */ | |
09319b4e | 262 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
263 | if (pi->extra |
264 | && (struct bgp_path_info *)pi->extra->parent == | |
265 | parent_pi) | |
266 | break; | |
267 | ||
268 | if (!pi) | |
269 | return 0; | |
270 | ||
271 | /* Mark entry for deletion */ | |
09319b4e | 272 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
273 | |
274 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 275 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
276 | |
277 | /* Unlock route node. */ | |
09319b4e | 278 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
279 | |
280 | return ret; | |
281 | } | |
282 | ||
283 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
284 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
285 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
286 | struct bgp_path_info *pi, int install) | |
287 | { | |
288 | int ret = 0; | |
289 | ||
290 | if (install) | |
291 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
292 | else | |
293 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
294 | ||
295 | if (ret) { | |
296 | flog_err( | |
297 | EC_BGP_EVPN_FAIL, | |
298 | "%u: Failed to %s EVPN %s route in ESI %s", | |
299 | bgp->vrf_id, | |
300 | install ? "install" : "uninstall", | |
301 | "ES", es->esi_str); | |
302 | return ret; | |
303 | } | |
304 | return 0; | |
305 | } | |
306 | ||
307 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
308 | * Also remove all remote routes from the per ES table. Invoked when ES | |
309 | * is deleted. | |
185fb14a | 310 | */ |
c44ab6f1 AK |
311 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
312 | { | |
09319b4e | 313 | struct bgp_dest *dest; |
c44ab6f1 AK |
314 | struct bgp_path_info *pi, *nextpi; |
315 | ||
316 | /* de-activate the ES */ | |
317 | bgp_evpn_local_es_down(bgp, es); | |
318 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
319 | ||
320 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
321 | for (dest = bgp_table_top(es->route_table); dest; |
322 | dest = bgp_route_next(dest)) { | |
323 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
324 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
325 | bgp_path_info_delete(dest, pi); | |
326 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
327 | } |
328 | } | |
329 | } | |
330 | ||
331 | /***************************************************************************** | |
332 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
333 | * segment updates. | |
334 | */ | |
335 | ||
336 | /* create or update local EVPN type1/type4 route entry. | |
337 | * | |
338 | * This could be in - | |
339 | * the ES table if ESR/EAD-ES (or) | |
340 | * the VNI table if EAD-EVI (or) | |
341 | * the global table if ESR/EAD-ES/EAD-EVI | |
342 | * | |
343 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
344 | * ESR). | |
345 | */ | |
09319b4e DS |
346 | static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
347 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
348 | struct bgp_dest *dest, struct attr *attr, | |
349 | int add, struct bgp_path_info **ri, | |
350 | int *route_changed) | |
185fb14a | 351 | { |
185fb14a AK |
352 | struct bgp_path_info *tmp_pi = NULL; |
353 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
354 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
355 | struct attr *attr_new = NULL; | |
c44ab6f1 | 356 | struct prefix_evpn *evp; |
185fb14a AK |
357 | |
358 | *ri = NULL; | |
752eed47 | 359 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 360 | *route_changed = 1; |
185fb14a AK |
361 | |
362 | /* locate the local and remote entries if any */ | |
09319b4e | 363 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
364 | tmp_pi = tmp_pi->next) { |
365 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
366 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
367 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
368 | local_pi = tmp_pi; |
369 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
370 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
371 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
372 | remote_pi = tmp_pi; |
373 | } | |
374 | ||
c44ab6f1 AK |
375 | /* we don't expect to see a remote_ri at this point as |
376 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
377 | * in the VNI-rt-table. | |
185fb14a AK |
378 | */ |
379 | if (remote_pi) { | |
380 | flog_err( | |
23d0a753 DA |
381 | EC_BGP_ES_INVALID, |
382 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
383 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a AK |
384 | return -1; |
385 | } | |
386 | ||
387 | if (!local_pi && !add) | |
388 | return 0; | |
389 | ||
390 | /* create or update the entry */ | |
391 | if (!local_pi) { | |
392 | ||
393 | /* Add or update attribute to hash */ | |
394 | attr_new = bgp_attr_intern(attr); | |
395 | ||
396 | /* Create new route with its attribute. */ | |
397 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 398 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
399 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
400 | ||
c44ab6f1 AK |
401 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
402 | bgp_path_info_extra_get(tmp_pi); | |
403 | tmp_pi->extra->num_labels = 1; | |
404 | if (vpn) | |
405 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
406 | else | |
407 | tmp_pi->extra->label[0] = 0; | |
408 | } | |
409 | ||
185fb14a | 410 | /* add the newly created path to the route-node */ |
09319b4e | 411 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
412 | } else { |
413 | tmp_pi = local_pi; | |
414 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 415 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
416 | *route_changed = 0; |
417 | else { | |
418 | /* The attribute has changed. | |
419 | * Add (or update) attribute to hash. | |
420 | */ | |
421 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
422 | bgp_path_info_set_flag(dest, tmp_pi, |
423 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
424 | |
425 | /* Restore route, if needed. */ | |
426 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 427 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
428 | |
429 | /* Unintern existing, set to new. */ | |
430 | bgp_attr_unintern(&tmp_pi->attr); | |
431 | tmp_pi->attr = attr_new; | |
432 | tmp_pi->uptime = bgp_clock(); | |
433 | } | |
434 | } | |
435 | ||
c44ab6f1 AK |
436 | if (*route_changed) { |
437 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
438 | zlog_debug( |
439 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
440 | es->esi_str, vpn ? vpn->vni : 0, | |
441 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
442 | ? "esr" | |
443 | : (vpn ? "ead-evi" : "ead-es"), | |
444 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
445 | } |
446 | ||
185fb14a AK |
447 | /* Return back the route entry. */ |
448 | *ri = tmp_pi; | |
449 | return 0; | |
450 | } | |
451 | ||
c44ab6f1 AK |
452 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
453 | * | |
454 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
455 | * ESR). | |
456 | */ | |
457 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
458 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 459 | { |
185fb14a AK |
460 | afi_t afi = AFI_L2VPN; |
461 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 462 | struct bgp_path_info *pi; |
09319b4e DS |
463 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
464 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
465 | struct bgp_table *rt_table; |
466 | struct prefix_rd *prd; | |
185fb14a | 467 | |
c44ab6f1 AK |
468 | if (vpn) { |
469 | rt_table = vpn->route_table; | |
470 | prd = &vpn->prd; | |
471 | } else { | |
472 | rt_table = es->route_table; | |
473 | prd = &es->prd; | |
474 | } | |
185fb14a | 475 | |
c44ab6f1 AK |
476 | /* First, locate the route node within the ESI or VNI. |
477 | * If it doesn't exist, ther is nothing to do. | |
478 | * Note: there is no RD here. | |
479 | */ | |
09319b4e DS |
480 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
481 | if (!dest) | |
c44ab6f1 | 482 | return 0; |
185fb14a | 483 | |
c44ab6f1 | 484 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
485 | zlog_debug( |
486 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
487 | es->esi_str, vpn ? vpn->vni : 0, | |
488 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
489 | ? "esr" | |
490 | : (vpn ? "ead-evi" : "ead-es"), | |
491 | &es->originator_ip); | |
185fb14a | 492 | |
c44ab6f1 AK |
493 | /* Next, locate route node in the global EVPN routing table. |
494 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
495 | */ | |
09319b4e DS |
496 | global_dest = |
497 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
498 | (const struct prefix_evpn *)p, prd); | |
499 | if (global_dest) { | |
185fb14a | 500 | |
c44ab6f1 | 501 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 502 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
503 | |
504 | /* Schedule for processing - withdraws to peers happen from | |
505 | * this table. | |
506 | */ | |
507 | if (pi) | |
09319b4e DS |
508 | bgp_process(bgp, global_dest, afi, safi); |
509 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
510 | } |
511 | ||
512 | /* | |
c44ab6f1 | 513 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
514 | * This can just be removed. |
515 | */ | |
09319b4e | 516 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 517 | if (pi) |
09319b4e DS |
518 | bgp_path_info_reap(dest, pi); |
519 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
520 | return 0; |
521 | } | |
522 | ||
c44ab6f1 AK |
523 | /***************************************************************************** |
524 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
525 | * ESRs are used for DF election. Currently service-carving described in |
526 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
527 | * used by default. | |
528 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 529 | */ |
c44ab6f1 AK |
530 | /* Build extended community for EVPN ES (type-4) route */ |
531 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
532 | struct attr *attr) | |
185fb14a | 533 | { |
c44ab6f1 AK |
534 | struct ecommunity ecom_encap; |
535 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 536 | struct ecommunity ecom_df; |
c44ab6f1 AK |
537 | struct ecommunity_val eval; |
538 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 539 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
540 | bgp_encap_types tnl_type; |
541 | struct ethaddr mac; | |
185fb14a | 542 | |
c44ab6f1 AK |
543 | /* Encap */ |
544 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
545 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
546 | encode_encap_extcomm(tnl_type, &eval); | |
547 | ecom_encap.size = 1; | |
34540b0d | 548 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
549 | ecom_encap.val = (uint8_t *)eval.val; |
550 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 551 | |
c44ab6f1 AK |
552 | /* ES import RT */ |
553 | memset(&mac, 0, sizeof(struct ethaddr)); | |
554 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
555 | es_get_system_mac(&es->esi, &mac); | |
556 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
557 | ecom_es_rt.size = 1; | |
34540b0d | 558 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
559 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
560 | attr->ecommunity = | |
561 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 562 | |
74e2bd89 AK |
563 | /* DF election extended community */ |
564 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
565 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
566 | ecom_df.size = 1; | |
567 | ecom_df.val = (uint8_t *)eval_df.val; | |
568 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
569 | ||
c44ab6f1 | 570 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
571 | } |
572 | ||
c44ab6f1 AK |
573 | /* Create or update local type-4 route */ |
574 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
575 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
576 | { |
577 | int ret = 0; | |
c44ab6f1 AK |
578 | int route_changed = 0; |
579 | afi_t afi = AFI_L2VPN; | |
580 | safi_t safi = SAFI_EVPN; | |
581 | struct attr attr; | |
582 | struct attr *attr_new = NULL; | |
09319b4e | 583 | struct bgp_dest *dest = NULL; |
185fb14a | 584 | struct bgp_path_info *pi = NULL; |
185fb14a | 585 | |
c44ab6f1 AK |
586 | memset(&attr, 0, sizeof(struct attr)); |
587 | ||
588 | /* Build path-attribute for this route. */ | |
589 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
590 | attr.nexthop = es->originator_ip; | |
591 | attr.mp_nexthop_global_in = es->originator_ip; | |
592 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
593 | ||
594 | /* Set up extended community. */ | |
595 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
596 | ||
597 | /* First, create (or fetch) route node within the ESI. */ | |
598 | /* NOTE: There is no RD here. */ | |
09319b4e | 599 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 600 | |
c44ab6f1 | 601 | /* Create or update route entry. */ |
09319b4e DS |
602 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
603 | &pi, &route_changed); | |
ec779825 | 604 | if (ret != 0) |
23d0a753 DA |
605 | flog_err( |
606 | EC_BGP_ES_INVALID, | |
607 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
608 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 609 | |
c44ab6f1 AK |
610 | assert(pi); |
611 | attr_new = pi->attr; | |
185fb14a | 612 | |
c44ab6f1 AK |
613 | /* Perform route selection; |
614 | * this is just to set the flags correctly | |
615 | * as local route in the ES always wins. | |
616 | */ | |
09319b4e DS |
617 | bgp_evpn_es_route_select_install(bgp, es, dest); |
618 | bgp_dest_unlock_node(dest); | |
185fb14a | 619 | |
c44ab6f1 AK |
620 | /* If this is a new route or some attribute has changed, export the |
621 | * route to the global table. The route will be advertised to peers | |
622 | * from there. Note that this table is a 2-level tree (RD-level + | |
623 | * Prefix-level) similar to L3VPN routes. | |
624 | */ | |
625 | if (route_changed) { | |
626 | struct bgp_path_info *global_pi; | |
185fb14a | 627 | |
09319b4e DS |
628 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
629 | p, &es->prd); | |
630 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
631 | attr_new, 1, &global_pi, | |
632 | &route_changed); | |
185fb14a | 633 | |
c44ab6f1 | 634 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
635 | bgp_process(bgp, dest, afi, safi); |
636 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
637 | } |
638 | ||
c44ab6f1 AK |
639 | /* Unintern temporary. */ |
640 | aspath_unintern(&attr.aspath); | |
641 | return 0; | |
185fb14a AK |
642 | } |
643 | ||
c44ab6f1 AK |
644 | /* Delete local type-4 route */ |
645 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
646 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 647 | { |
c44ab6f1 AK |
648 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
649 | } | |
185fb14a | 650 | |
c44ab6f1 AK |
651 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
652 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
653 | struct attr *attr, uint8_t *pfx, int psize, | |
654 | uint32_t addpath_id) | |
655 | { | |
656 | int ret; | |
657 | esi_t esi; | |
658 | uint8_t ipaddr_len; | |
659 | struct in_addr vtep_ip; | |
660 | struct prefix_rd prd; | |
661 | struct prefix_evpn p; | |
185fb14a | 662 | |
c44ab6f1 AK |
663 | /* Type-4 route should be either 23 or 35 bytes |
664 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 665 | */ |
c44ab6f1 AK |
666 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
667 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
668 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
669 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
670 | peer->bgp->vrf_id, peer->host, psize); | |
671 | return -1; | |
672 | } | |
185fb14a | 673 | |
c44ab6f1 AK |
674 | /* Make prefix_rd */ |
675 | prd.family = AF_UNSPEC; | |
676 | prd.prefixlen = 64; | |
677 | memcpy(&prd.val, pfx, RD_BYTES); | |
678 | pfx += RD_BYTES; | |
185fb14a | 679 | |
c44ab6f1 AK |
680 | /* get the ESI */ |
681 | memcpy(&esi, pfx, ESI_BYTES); | |
682 | pfx += ESI_BYTES; | |
185fb14a | 683 | |
185fb14a | 684 | |
c44ab6f1 AK |
685 | /* Get the IP. */ |
686 | ipaddr_len = *pfx++; | |
687 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
688 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
689 | } else { | |
690 | flog_err( | |
691 | EC_BGP_EVPN_ROUTE_INVALID, | |
692 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
693 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
694 | return -1; | |
695 | } | |
185fb14a | 696 | |
c44ab6f1 AK |
697 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
698 | /* Process the route. */ | |
699 | if (attr) { | |
700 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
701 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
702 | &prd, NULL, 0, 0, NULL); | |
703 | } else { | |
704 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
705 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
706 | &prd, NULL, 0, NULL); | |
707 | } | |
185fb14a AK |
708 | return ret; |
709 | } | |
710 | ||
c44ab6f1 AK |
711 | /* Check if a prefix belongs to the local ES */ |
712 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
713 | struct bgp_evpn_es *es) | |
185fb14a | 714 | { |
c44ab6f1 AK |
715 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
716 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
717 | } |
718 | ||
c44ab6f1 AK |
719 | /* Import remote ESRs on local ethernet segment add */ |
720 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
721 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
722 | { |
723 | int ret; | |
724 | afi_t afi; | |
725 | safi_t safi; | |
09319b4e | 726 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
727 | struct bgp_table *table; |
728 | struct bgp_path_info *pi; | |
729 | ||
730 | afi = AFI_L2VPN; | |
731 | safi = SAFI_EVPN; | |
732 | ||
c44ab6f1 AK |
733 | /* Walk entire global routing table and evaluate routes which could be |
734 | * imported into this Ethernet Segment. | |
185fb14a | 735 | */ |
09319b4e DS |
736 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
737 | rd_dest = bgp_route_next(rd_dest)) { | |
738 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
739 | if (!table) |
740 | continue; | |
741 | ||
09319b4e DS |
742 | for (dest = bgp_table_top(table); dest; |
743 | dest = bgp_route_next(dest)) { | |
744 | struct prefix_evpn *evp = | |
752eed47 | 745 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 746 | |
09319b4e DS |
747 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
748 | pi = pi->next) { | |
185fb14a AK |
749 | /* |
750 | * Consider "valid" remote routes applicable for | |
751 | * this ES. | |
752 | */ | |
753 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
754 | && pi->type == ZEBRA_ROUTE_BGP |
755 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
756 | continue; |
757 | ||
c44ab6f1 | 758 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
759 | continue; |
760 | ||
761 | if (install) | |
c44ab6f1 AK |
762 | ret = bgp_evpn_es_route_install( |
763 | bgp, es, evp, pi); | |
185fb14a | 764 | else |
c44ab6f1 AK |
765 | ret = bgp_evpn_es_route_uninstall( |
766 | bgp, es, evp, pi); | |
185fb14a AK |
767 | |
768 | if (ret) { | |
769 | flog_err( | |
2dbe669b DA |
770 | EC_BGP_EVPN_FAIL, |
771 | "Failed to %s EVPN %pFX route in ESI %s", | |
772 | install ? "install" | |
185fb14a | 773 | : "uninstall", |
2dbe669b | 774 | evp, es->esi_str); |
dc52bece DS |
775 | |
776 | bgp_dest_unlock_node(rd_dest); | |
777 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
778 | return ret; |
779 | } | |
780 | } | |
781 | } | |
782 | } | |
783 | return 0; | |
784 | } | |
785 | ||
c44ab6f1 AK |
786 | /***************************************************************************** |
787 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
788 | * There are two types of EAD routes - | |
789 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
790 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 791 | */ |
185fb14a | 792 | |
c44ab6f1 AK |
793 | /* Extended communities associated with EAD-per-ES */ |
794 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
795 | struct attr *attr) | |
185fb14a | 796 | { |
c44ab6f1 AK |
797 | struct ecommunity ecom_encap; |
798 | struct ecommunity ecom_esi_label; | |
799 | struct ecommunity_val eval; | |
800 | struct ecommunity_val eval_esi_label; | |
801 | bgp_encap_types tnl_type; | |
802 | struct listnode *evi_node, *rt_node; | |
803 | struct ecommunity *ecom; | |
804 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 805 | |
c44ab6f1 AK |
806 | /* Encap */ |
807 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
808 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
809 | encode_encap_extcomm(tnl_type, &eval); | |
810 | ecom_encap.size = 1; | |
34540b0d | 811 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
812 | ecom_encap.val = (uint8_t *)eval.val; |
813 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 814 | |
c44ab6f1 AK |
815 | /* ESI label */ |
816 | encode_esi_label_extcomm(&eval_esi_label, | |
817 | false /*single_active*/); | |
818 | ecom_esi_label.size = 1; | |
34540b0d | 819 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
820 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
821 | attr->ecommunity = | |
822 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
823 | ||
824 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
825 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
826 | * with it. | |
827 | */ | |
828 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
829 | evi_node, es_evi)) { | |
830 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
831 | continue; | |
832 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
833 | rt_node, ecom)) | |
834 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
835 | ecom); | |
836 | } | |
837 | ||
838 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
839 | } | |
840 | ||
841 | /* Extended communities associated with EAD-per-EVI */ | |
842 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
843 | struct bgpevpn *vpn, struct attr *attr) | |
844 | { | |
845 | struct ecommunity ecom_encap; | |
846 | struct ecommunity_val eval; | |
847 | bgp_encap_types tnl_type; | |
848 | struct listnode *rt_node; | |
849 | struct ecommunity *ecom; | |
850 | ||
851 | /* Encap */ | |
852 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
853 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
854 | encode_encap_extcomm(tnl_type, &eval); | |
855 | ecom_encap.size = 1; | |
7659ad68 | 856 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
857 | ecom_encap.val = (uint8_t *)eval.val; |
858 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
859 | ||
860 | /* Add export RTs for the L2-VNI */ | |
861 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
862 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
863 | ||
864 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
865 | } | |
866 | ||
867 | /* Update EVPN EAD (type-1) route - | |
868 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
869 | */ | |
870 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
871 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
872 | struct prefix_evpn *p) | |
873 | { | |
874 | int ret = 0; | |
875 | afi_t afi = AFI_L2VPN; | |
876 | safi_t safi = SAFI_EVPN; | |
877 | struct attr attr; | |
878 | struct attr *attr_new = NULL; | |
09319b4e | 879 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
880 | struct bgp_path_info *pi = NULL; |
881 | int route_changed = 0; | |
882 | struct prefix_rd *global_rd; | |
883 | ||
884 | memset(&attr, 0, sizeof(struct attr)); | |
885 | ||
886 | /* Build path-attribute for this route. */ | |
887 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
888 | attr.nexthop = es->originator_ip; | |
889 | attr.mp_nexthop_global_in = es->originator_ip; | |
890 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
891 | ||
892 | if (vpn) { | |
893 | /* EAD-EVI route update */ | |
894 | /* MPLS label */ | |
895 | vni2label(vpn->vni, &(attr.label)); | |
896 | ||
897 | /* Set up extended community */ | |
898 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
899 | ||
900 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 901 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
902 | |
903 | /* Create or update route entry. */ | |
09319b4e DS |
904 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
905 | &attr, 1, &pi, &route_changed); | |
ec779825 | 906 | if (ret != 0) |
23d0a753 DA |
907 | flog_err( |
908 | EC_BGP_ES_INVALID, | |
909 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
910 | bgp->vrf_id, es->esi_str, vpn->vni, | |
911 | &es->originator_ip); | |
c44ab6f1 AK |
912 | global_rd = &vpn->prd; |
913 | } else { | |
914 | /* EAD-ES route update */ | |
915 | /* MPLS label is 0 for EAD-ES route */ | |
916 | ||
917 | /* Set up extended community */ | |
918 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
919 | ||
920 | /* First, create (or fetch) route node within the ES. */ | |
921 | /* NOTE: There is no RD here. */ | |
922 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 923 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
924 | |
925 | /* Create or update route entry. */ | |
09319b4e DS |
926 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
927 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 928 | if (ret != 0) { |
23d0a753 DA |
929 | flog_err( |
930 | EC_BGP_ES_INVALID, | |
931 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
932 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
933 | } |
934 | global_rd = &es->prd; | |
935 | } | |
936 | ||
937 | ||
938 | assert(pi); | |
939 | attr_new = pi->attr; | |
940 | ||
941 | /* Perform route selection; | |
942 | * this is just to set the flags correctly as local route in | |
943 | * the ES always wins. | |
944 | */ | |
09319b4e DS |
945 | evpn_route_select_install(bgp, vpn, dest); |
946 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
947 | |
948 | /* If this is a new route or some attribute has changed, export the | |
949 | * route to the global table. The route will be advertised to peers | |
950 | * from there. Note that this table is a 2-level tree (RD-level + | |
951 | * Prefix-level) similar to L3VPN routes. | |
952 | */ | |
953 | if (route_changed) { | |
954 | struct bgp_path_info *global_pi; | |
955 | ||
09319b4e DS |
956 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
957 | p, global_rd); | |
958 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
959 | attr_new, 1, &global_pi, | |
960 | &route_changed); | |
c44ab6f1 AK |
961 | |
962 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
963 | bgp_process(bgp, dest, afi, safi); |
964 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
965 | } |
966 | ||
967 | /* Unintern temporary. */ | |
968 | aspath_unintern(&attr.aspath); | |
969 | return 0; | |
970 | } | |
971 | ||
972 | /* Delete local Type-1 route */ | |
973 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
974 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
975 | { | |
976 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
977 | } | |
978 | ||
979 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
980 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
981 | struct prefix_evpn *p) | |
982 | { | |
983 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
984 | } | |
985 | ||
986 | /* Generate EAD-EVI for all VNIs */ | |
987 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
988 | struct bgp_evpn_es *es) | |
989 | { | |
990 | struct listnode *evi_node; | |
991 | struct prefix_evpn p; | |
992 | struct bgp_evpn_es_evi *es_evi; | |
993 | ||
994 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
995 | /* EAD-EVI route add for this ES is already done */ | |
996 | return; | |
997 | ||
998 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
999 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1000 | &es->esi, es->originator_ip); | |
1001 | ||
1002 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1003 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1004 | continue; | |
1005 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1006 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1007 | "%u: Type4 route creation failure for ESI %s", | |
1008 | bgp->vrf_id, es->esi_str); | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | /* | |
1013 | * Withdraw EAD-EVI for all VNIs | |
1014 | */ | |
1015 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1016 | struct bgp_evpn_es *es) | |
1017 | { | |
1018 | struct listnode *evi_node; | |
1019 | struct prefix_evpn p; | |
1020 | struct bgp_evpn_es_evi *es_evi; | |
1021 | ||
1022 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1023 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1024 | /* EAD-EVI route has not been advertised for this ES */ | |
1025 | return; | |
1026 | ||
1027 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1028 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1029 | &es->esi, es->originator_ip); | |
1030 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1031 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1032 | continue; | |
1033 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1034 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1035 | "%u: Type4 route creation failure for ESI %s", | |
1036 | bgp->vrf_id, es->esi_str); | |
1037 | } | |
1038 | } | |
185fb14a AK |
1039 | |
1040 | /* | |
c44ab6f1 | 1041 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1042 | */ |
c44ab6f1 AK |
1043 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1044 | struct attr *attr, uint8_t *pfx, int psize, | |
1045 | uint32_t addpath_id) | |
185fb14a AK |
1046 | { |
1047 | int ret; | |
c44ab6f1 | 1048 | struct prefix_rd prd; |
185fb14a | 1049 | esi_t esi; |
c44ab6f1 AK |
1050 | uint32_t eth_tag; |
1051 | mpls_label_t label; | |
185fb14a | 1052 | struct in_addr vtep_ip; |
185fb14a AK |
1053 | struct prefix_evpn p; |
1054 | ||
c44ab6f1 | 1055 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1056 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1057 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1058 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1059 | return -1; |
1060 | } | |
1061 | ||
1062 | /* Make prefix_rd */ | |
1063 | prd.family = AF_UNSPEC; | |
1064 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1065 | memcpy(&prd.val, pfx, RD_BYTES); |
1066 | pfx += RD_BYTES; | |
185fb14a AK |
1067 | |
1068 | /* get the ESI */ | |
1069 | memcpy(&esi, pfx, ESI_BYTES); | |
1070 | pfx += ESI_BYTES; | |
1071 | ||
c44ab6f1 AK |
1072 | /* Copy Ethernet Tag */ |
1073 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1074 | eth_tag = ntohl(eth_tag); | |
1075 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1076 | |
c44ab6f1 | 1077 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1078 | |
c44ab6f1 AK |
1079 | /* EAD route prefix doesn't include the nexthop in the global |
1080 | * table | |
1081 | */ | |
3a6290bd | 1082 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1083 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1084 | /* Process the route. */ |
1085 | if (attr) { | |
1086 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1087 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1088 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1089 | } else { |
1090 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1091 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1092 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1093 | } |
1094 | return ret; | |
1095 | } | |
1096 | ||
c44ab6f1 AK |
1097 | /*****************************************************************************/ |
1098 | /* Ethernet Segment Management | |
1099 | * 1. Ethernet Segment is a collection of links attached to the same | |
1100 | * server (MHD) or switch (MHN) | |
1101 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1102 | * 10-byte ES-ID. | |
1103 | * 3. Local ESs are configured in zebra and sent to BGP | |
1104 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1105 | * created on first reference and release on last de-reference | |
1106 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1107 | * to have an ES peer. | |
1108 | */ | |
1109 | ||
1110 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1111 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1112 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1113 | * have been imported into one or more VNIs | |
185fb14a | 1114 | */ |
c44ab6f1 AK |
1115 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1116 | { | |
1117 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1118 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1119 | ||
1120 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1121 | } | |
1122 | ||
1123 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1124 | struct in_addr vtep_ip) | |
1125 | { | |
1126 | struct bgp_evpn_es_vtep *es_vtep; | |
1127 | ||
1128 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1129 | ||
1130 | es_vtep->es = es; | |
1131 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1132 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1133 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1134 | ||
1135 | return es_vtep; | |
1136 | } | |
1137 | ||
1138 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1139 | { | |
1140 | struct bgp_evpn_es *es = es_vtep->es; | |
1141 | ||
1142 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1143 | es_vtep->evi_cnt) | |
1144 | /* as long as there is some reference we can't free it */ | |
1145 | return; | |
1146 | ||
1147 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1148 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1149 | } | |
1150 | ||
1151 | /* check if VTEP is already part of the list */ | |
1152 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1153 | struct in_addr vtep_ip) | |
1154 | { | |
1155 | struct listnode *node = NULL; | |
1156 | struct bgp_evpn_es_vtep *es_vtep; | |
1157 | ||
1158 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1159 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1160 | return es_vtep; | |
1161 | } | |
1162 | return NULL; | |
1163 | } | |
1164 | ||
1165 | /* Send the remote ES to zebra for NHG programming */ | |
1166 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1167 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1168 | { | |
1169 | struct bgp_evpn_es *es = es_vtep->es; | |
1170 | struct stream *s; | |
74e2bd89 | 1171 | uint32_t flags = 0; |
c44ab6f1 AK |
1172 | |
1173 | /* Check socket. */ | |
1174 | if (!zclient || zclient->sock < 0) | |
1175 | return 0; | |
1176 | ||
1177 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1178 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1179 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1180 | zlog_debug("No zebra instance, not installing remote es %s", | |
1181 | es->esi_str); | |
1182 | return 0; | |
1183 | } | |
1184 | ||
74e2bd89 AK |
1185 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1186 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1187 | ||
c44ab6f1 AK |
1188 | s = zclient->obuf; |
1189 | stream_reset(s); | |
1190 | ||
1191 | zclient_create_header(s, | |
1192 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1193 | bgp->vrf_id); | |
1194 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1195 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1196 | if (add) { |
1197 | stream_putl(s, flags); | |
1198 | stream_putc(s, es_vtep->df_alg); | |
1199 | stream_putw(s, es_vtep->df_pref); | |
1200 | } | |
c44ab6f1 AK |
1201 | |
1202 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1203 | ||
1204 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1205 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1206 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1207 | |
1208 | return zclient_send_message(zclient); | |
1209 | } | |
1210 | ||
1211 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1212 | struct bgp_evpn_es_vtep *es_vtep, |
1213 | bool param_change) | |
c44ab6f1 AK |
1214 | { |
1215 | bool old_active; | |
1216 | bool new_active; | |
1217 | ||
1218 | old_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1219 | /* currently we need an active EVI reference to use the VTEP as | |
1220 | * a nexthop. this may change... | |
1221 | */ | |
1222 | if (es_vtep->evi_cnt) | |
1223 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1224 | else | |
1225 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1226 | ||
1227 | new_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1228 | ||
74e2bd89 | 1229 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1230 | |
74e2bd89 AK |
1231 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1232 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1233 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1234 | new_active ? "active" : "inactive", | |
1235 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1236 | |
74e2bd89 AK |
1237 | /* send remote ES to zebra */ |
1238 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1239 | |
8bcb09a1 AK |
1240 | /* The NHG is updated first for efficient failover handling. |
1241 | * Note the NHG can be de-activated while there are bgp | |
1242 | * routes referencing it. Zebra is capable of handling that | |
1243 | * elegantly by holding the NHG till all routes using it are | |
1244 | * removed. | |
26c03e43 | 1245 | */ |
8bcb09a1 | 1246 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
2eef4f20 | 1247 | bgp_evpn_es_path_update_on_vtep_chg(es_vtep, new_active); |
c589d847 | 1248 | |
74e2bd89 AK |
1249 | /* queue up the es for background consistency checks */ |
1250 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1251 | } | |
c44ab6f1 AK |
1252 | } |
1253 | ||
1254 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1255 | struct bgp_evpn_es *es, |
1256 | struct in_addr vtep_ip, | |
1257 | bool esr, uint8_t df_alg, | |
1258 | uint16_t df_pref) | |
c44ab6f1 AK |
1259 | { |
1260 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1261 | bool param_change = false; |
c44ab6f1 AK |
1262 | |
1263 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1264 | ||
1265 | if (!es_vtep) | |
1266 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1267 | ||
1268 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1269 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1270 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1271 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1272 | |
74e2bd89 | 1273 | if (esr) { |
c44ab6f1 | 1274 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1275 | if ((es_vtep->df_pref != df_pref) |
1276 | || (es_vtep->df_alg != df_alg)) { | |
1277 | param_change = true; | |
1278 | es_vtep->df_pref = df_pref; | |
1279 | es_vtep->df_alg = df_alg; | |
1280 | } | |
1281 | } else { | |
c44ab6f1 | 1282 | ++es_vtep->evi_cnt; |
74e2bd89 | 1283 | } |
c44ab6f1 | 1284 | |
74e2bd89 | 1285 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1286 | |
1287 | return es_vtep; | |
1288 | } | |
1289 | ||
1290 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1291 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1292 | { | |
74e2bd89 AK |
1293 | bool param_change = false; |
1294 | ||
c44ab6f1 | 1295 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1296 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1297 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1298 | if (esr) { |
1299 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1300 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1301 | param_change = true; | |
1302 | es_vtep->df_pref = 0; | |
1303 | es_vtep->df_alg = 0; | |
1304 | } | |
c44ab6f1 AK |
1305 | } else { |
1306 | if (es_vtep->evi_cnt) | |
1307 | --es_vtep->evi_cnt; | |
1308 | } | |
1309 | ||
74e2bd89 | 1310 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1311 | bgp_evpn_es_vtep_free(es_vtep); |
1312 | } | |
1313 | ||
1314 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1315 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1316 | { | |
1317 | struct bgp_evpn_es_vtep *es_vtep; | |
1318 | ||
1319 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1320 | if (es_vtep) | |
1321 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1322 | } | |
1323 | ||
26c03e43 AK |
1324 | bool bgp_evpn_es_is_vtep_active(esi_t *esi, struct in_addr nh) |
1325 | { | |
1326 | struct bgp_evpn_es *es; | |
1327 | struct bgp_evpn_es_vtep *es_vtep; | |
1328 | struct listnode *node = NULL; | |
1329 | bool rc = false; | |
1330 | ||
1331 | if (!memcmp(esi, zero_esi, sizeof(*esi)) || !nh.s_addr) | |
1332 | return true; | |
1333 | ||
1334 | es = bgp_evpn_es_find(esi); | |
1335 | if (!es) | |
1336 | return false; | |
1337 | ||
1338 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1339 | if (es_vtep->vtep_ip.s_addr == nh.s_addr) { | |
1340 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
1341 | rc = true; | |
1342 | break; | |
1343 | } | |
1344 | } | |
1345 | return rc; | |
1346 | } | |
1347 | ||
1348 | /********************** ES MAC-IP paths ************************************* | |
1349 | * MAC-IP routes in the VNI routing table are linked to the destination | |
1350 | * ES for efficient updates on ES changes (such as VTEP add/del). | |
1351 | ****************************************************************************/ | |
1352 | void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) | |
1353 | { | |
1354 | bgp_evpn_path_es_unlink(es_info); | |
1355 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1356 | } | |
1357 | ||
1358 | static struct bgp_path_es_info * | |
1359 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1360 | { | |
1361 | struct bgp_path_info_extra *e; | |
1362 | ||
1363 | e = bgp_path_info_extra_get(pi); | |
1364 | ||
1365 | /* If es_info doesn't exist allocate it */ | |
1366 | if (!e->es_info) { | |
1367 | e->es_info = XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1368 | sizeof(struct bgp_path_es_info)); | |
1369 | e->es_info->pi = pi; | |
1370 | e->es_info->vni = vni; | |
1371 | } | |
1372 | ||
1373 | return e->es_info; | |
1374 | } | |
1375 | ||
1376 | void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) | |
1377 | { | |
1378 | struct bgp_evpn_es *es = es_info->es; | |
1379 | struct bgp_path_info *pi; | |
26c03e43 AK |
1380 | |
1381 | if (!es) | |
1382 | return; | |
1383 | ||
1384 | pi = es_info->pi; | |
1385 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1386 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1387 | &pi->net->p, es->esi_str); | |
26c03e43 AK |
1388 | |
1389 | list_delete_node(es->macip_path_list, &es_info->es_listnode); | |
1390 | es_info->es = NULL; | |
1391 | ||
1392 | /* if there are no other references against the ES it | |
1393 | * needs to be freed | |
1394 | */ | |
1395 | bgp_evpn_es_free(es, __func__); | |
1396 | ||
1397 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1398 | * along with the path. | |
1399 | */ | |
1400 | } | |
1401 | ||
1402 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1403 | { | |
1404 | struct bgp_path_es_info *es_info; | |
1405 | struct bgp_evpn_es *es; | |
1406 | struct bgp *bgp_evpn = bgp_get_evpn(); | |
26c03e43 AK |
1407 | |
1408 | es_info = pi->extra ? pi->extra->es_info : NULL; | |
1409 | /* if the esi is zero just unlink the path from the old es */ | |
1410 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1411 | if (es_info) | |
1412 | bgp_evpn_path_es_unlink(es_info); | |
1413 | return; | |
1414 | } | |
1415 | ||
1416 | if (!bgp_evpn) | |
1417 | return; | |
1418 | ||
1419 | /* setup es_info against the path if it doesn't aleady exist */ | |
1420 | if (!es_info) | |
1421 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1422 | ||
1423 | /* find-create ES */ | |
1424 | es = bgp_evpn_es_find(esi); | |
1425 | if (!es) | |
f61fbf21 | 1426 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1427 | |
1428 | /* dup check */ | |
1429 | if (es_info->es == es) | |
1430 | return; | |
1431 | ||
1432 | /* unlink old ES if any */ | |
1433 | bgp_evpn_path_es_unlink(es_info); | |
1434 | ||
1435 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1436 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1437 | es->esi_str); | |
26c03e43 AK |
1438 | |
1439 | /* link mac-ip path to the new destination ES */ | |
1440 | es_info->es = es; | |
1441 | listnode_init(&es_info->es_listnode, es_info); | |
229587fb | 1442 | listnode_add(es->macip_path_list, &es_info->es_listnode); |
26c03e43 AK |
1443 | } |
1444 | ||
2eef4f20 AK |
1445 | static void |
1446 | bgp_evpn_es_path_update_on_vtep_chg(struct bgp_evpn_es_vtep *es_vtep, | |
1447 | bool active) | |
26c03e43 AK |
1448 | { |
1449 | struct listnode *node; | |
1450 | struct bgp_path_es_info *es_info; | |
1451 | struct bgp_path_info *pi; | |
1452 | struct bgp_path_info *parent_pi; | |
1453 | struct bgp_evpn_es *es = es_vtep->es; | |
26c03e43 AK |
1454 | |
1455 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2eef4f20 AK |
1456 | zlog_debug("update paths linked to es %s on vtep chg", |
1457 | es->esi_str); | |
26c03e43 AK |
1458 | |
1459 | for (ALL_LIST_ELEMENTS_RO(es->macip_path_list, node, es_info)) { | |
1460 | pi = es_info->pi; | |
229587fb AK |
1461 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID)) |
1462 | continue; | |
1463 | ||
26c03e43 AK |
1464 | if (pi->sub_type != BGP_ROUTE_IMPORTED) |
1465 | continue; | |
1466 | ||
1467 | parent_pi = pi->extra ? pi->extra->parent : NULL; | |
1468 | if (!parent_pi || !parent_pi->attr) | |
1469 | continue; | |
1470 | ||
1471 | if (es_vtep->vtep_ip.s_addr != parent_pi->attr->nexthop.s_addr) | |
1472 | continue; | |
1473 | ||
1474 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2eef4f20 AK |
1475 | zlog_debug( |
1476 | "update path %pFX linked to es %s on vtep chg", | |
1477 | &parent_pi->net->p, es->esi_str); | |
26c03e43 AK |
1478 | bgp_evpn_import_route_in_vrfs(parent_pi, active ? 1 : 0); |
1479 | } | |
1480 | } | |
1481 | ||
c44ab6f1 AK |
1482 | /* compare ES-IDs for the global ES RB tree */ |
1483 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1484 | const struct bgp_evpn_es *es2) | |
1485 | { | |
1486 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1487 | } | |
1488 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1489 | ||
1490 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1491 | { |
c44ab6f1 | 1492 | struct bgp_evpn_es tmp; |
185fb14a | 1493 | |
185fb14a | 1494 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1495 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1496 | } |
1497 | ||
c44ab6f1 | 1498 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1499 | { |
c44ab6f1 | 1500 | struct bgp_evpn_es *es; |
185fb14a AK |
1501 | |
1502 | if (!bgp) | |
1503 | return NULL; | |
1504 | ||
c44ab6f1 | 1505 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1506 | |
c44ab6f1 | 1507 | /* set the ESI */ |
185fb14a | 1508 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1509 | |
1510 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1511 | es->es_vtep_list = list_new(); |
1512 | listset_app_node_mem(es->es_vtep_list); | |
1513 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1514 | |
c44ab6f1 | 1515 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1516 | |
c44ab6f1 | 1517 | /* Initialize the ES routing table */ |
185fb14a AK |
1518 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1519 | ||
c44ab6f1 AK |
1520 | /* Add to rb_tree */ |
1521 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1522 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1523 | return NULL; | |
1524 | } | |
1525 | ||
c44ab6f1 AK |
1526 | /* Initialise the ES-EVI list */ |
1527 | es->es_evi_list = list_new(); | |
1528 | listset_app_node_mem(es->es_evi_list); | |
1529 | ||
c589d847 AK |
1530 | /* Initialise the ES-VRF list used for L3NHG management */ |
1531 | es->es_vrf_list = list_new(); | |
1532 | listset_app_node_mem(es->es_vrf_list); | |
1533 | ||
26c03e43 AK |
1534 | /* Initialise the route list used for efficient event handling */ |
1535 | es->macip_path_list = list_new(); | |
1536 | listset_app_node_mem(es->macip_path_list); | |
1537 | ||
c44ab6f1 AK |
1538 | QOBJ_REG(es, bgp_evpn_es); |
1539 | ||
185fb14a AK |
1540 | return es; |
1541 | } | |
1542 | ||
c44ab6f1 | 1543 | /* Free a given ES - |
185fb14a AK |
1544 | * This just frees appropriate memory, caller should have taken other |
1545 | * needed actions. | |
1546 | */ | |
45a859f1 | 1547 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1548 | { |
26c03e43 AK |
1549 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
1550 | || listcount(es->macip_path_list)) | |
c44ab6f1 AK |
1551 | return; |
1552 | ||
45a859f1 AK |
1553 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1554 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1555 | ||
c44ab6f1 AK |
1556 | /* cleanup resources maintained against the ES */ |
1557 | list_delete(&es->es_evi_list); | |
c589d847 | 1558 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1559 | list_delete(&es->es_vtep_list); |
26c03e43 | 1560 | list_delete(&es->macip_path_list); |
185fb14a | 1561 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1562 | |
1563 | /* remove the entry from various databases */ | |
1564 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1565 | bgp_evpn_es_cons_checks_pend_del(es); | |
1566 | ||
185fb14a AK |
1567 | QOBJ_UNREG(es); |
1568 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1569 | } | |
1570 | ||
c44ab6f1 AK |
1571 | /* init local info associated with the ES */ |
1572 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1573 | { |
c44ab6f1 | 1574 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
185fb14a | 1575 | |
c44ab6f1 AK |
1576 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1577 | return; | |
185fb14a | 1578 | |
c44ab6f1 AK |
1579 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
1580 | listnode_init(&es->es_listnode, es); | |
1581 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1582 | |
c44ab6f1 AK |
1583 | /* auto derive RD for this es */ |
1584 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1585 | es->prd.family = AF_UNSPEC; | |
1586 | es->prd.prefixlen = 64; | |
23d0a753 | 1587 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 AK |
1588 | (void)str2prefix_rd(buf, &es->prd); |
1589 | } | |
1590 | ||
1591 | /* clear any local info associated with the ES */ | |
1592 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es) | |
1593 | { | |
1594 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1595 | return; | |
185fb14a | 1596 | |
c44ab6f1 | 1597 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1598 | |
c44ab6f1 AK |
1599 | /* remove from the ES local list */ |
1600 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1601 | ||
1602 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1603 | ||
45a859f1 | 1604 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1605 | } |
1606 | ||
c44ab6f1 AK |
1607 | /* eval remote info associated with the ES */ |
1608 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1609 | { | |
1610 | if (es->remote_es_evi_cnt) { | |
1611 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1612 | } else { | |
1613 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1614 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1615 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1616 | } |
1617 | } | |
1618 | } | |
1619 | ||
1620 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ | |
1621 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
1622 | struct bgp_evpn_es *es) | |
185fb14a | 1623 | { |
185fb14a | 1624 | struct prefix_evpn p; |
c44ab6f1 | 1625 | int ret; |
185fb14a | 1626 | |
c44ab6f1 AK |
1627 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1628 | return; | |
185fb14a | 1629 | |
c44ab6f1 | 1630 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); |
185fb14a | 1631 | |
c44ab6f1 AK |
1632 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1633 | zlog_debug("local es %s down", es->esi_str); | |
1634 | ||
1635 | /* withdraw ESR */ | |
1636 | /* Delete and withdraw locally learnt ES route */ | |
1637 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1638 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1639 | if (ret) { | |
1640 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1641 | "%u failed to delete type-4 route for ESI %s", | |
1642 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1643 | } |
1644 | ||
c44ab6f1 AK |
1645 | /* withdraw EAD-EVI */ |
1646 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1647 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1648 | |
c44ab6f1 AK |
1649 | /* withdraw EAD-ES */ |
1650 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1651 | &es->esi, es->originator_ip); | |
1652 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1653 | if (ret) { | |
1654 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1655 | "%u failed to delete type-1 route for ESI %s", | |
1656 | bgp->vrf_id, es->esi_str); | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | /* Process ES link oper-up by generating ES-EAD and ESR */ | |
74e2bd89 AK |
1661 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, |
1662 | bool regen_esr) | |
c44ab6f1 AK |
1663 | { |
1664 | struct prefix_evpn p; | |
74e2bd89 | 1665 | bool regen_ead = false; |
c44ab6f1 | 1666 | |
74e2bd89 AK |
1667 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { |
1668 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1669 | zlog_debug("local es %s up", es->esi_str); | |
c44ab6f1 | 1670 | |
74e2bd89 AK |
1671 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); |
1672 | regen_esr = true; | |
1673 | regen_ead = true; | |
1674 | } | |
c44ab6f1 | 1675 | |
74e2bd89 AK |
1676 | if (regen_esr) { |
1677 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1678 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1679 | /* generate ESR */ | |
1680 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1681 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1682 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1683 | "%u: Type4 route creation failure for ESI %s", | |
1684 | bgp->vrf_id, es->esi_str); | |
1685 | } | |
c44ab6f1 | 1686 | |
74e2bd89 AK |
1687 | if (regen_ead) { |
1688 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1689 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1690 | /* generate EAD-EVI */ | |
1691 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1692 | |
74e2bd89 AK |
1693 | /* generate EAD-ES */ |
1694 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1695 | es->originator_ip); | |
1696 | bgp_evpn_type1_route_update(bgp, es, NULL, &p); | |
1697 | } | |
c44ab6f1 AK |
1698 | } |
1699 | ||
1700 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) | |
1701 | { | |
1702 | struct bgp_evpn_es_evi *es_evi; | |
1703 | struct listnode *evi_node, *evi_next_node; | |
1704 | ||
1705 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1706 | zlog_debug("del local es %s", es->esi_str); | |
1707 | ||
1708 | /* Delete all local EVPN ES routes from ESI table | |
1709 | * and schedule for processing (to withdraw from peers)) | |
1710 | */ | |
1711 | bgp_evpn_es_route_del_all(bgp, es); | |
1712 | ||
1713 | /* release all local ES EVIs associated with the ES */ | |
1714 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
1715 | evi_next_node, es_evi)) { | |
1716 | bgp_evpn_local_es_evi_do_del(es_evi); | |
1717 | } | |
1718 | ||
1719 | /* Clear local info associated with the ES and free it up if there is | |
1720 | * no remote reference | |
1721 | */ | |
1722 | bgp_evpn_es_local_info_clear(es); | |
1723 | } | |
1724 | ||
7904e9fd AK |
1725 | bool bgp_evpn_is_esi_local(esi_t *esi) |
1726 | { | |
1727 | struct bgp_evpn_es *es = NULL; | |
1728 | ||
1729 | /* Lookup ESI hash - should exist. */ | |
1730 | es = bgp_evpn_es_find(esi); | |
1731 | return es ? !!(es->flags & BGP_EVPNES_LOCAL) : false; | |
1732 | } | |
1733 | ||
c44ab6f1 AK |
1734 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
1735 | { | |
1736 | struct bgp_evpn_es *es = NULL; | |
1737 | ||
1738 | /* Lookup ESI hash - should exist. */ | |
1739 | es = bgp_evpn_es_find(esi); | |
1740 | if (!es) { | |
1741 | flog_warn(EC_BGP_EVPN_ESI, | |
1742 | "%u: ES %s missing at local ES DEL", | |
1743 | bgp->vrf_id, es->esi_str); | |
1744 | return -1; | |
1745 | } | |
1746 | ||
1747 | bgp_evpn_local_es_do_del(bgp, es); | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | /* Handle device to ES id association. Results in the creation of a local | |
1752 | * ES. | |
1753 | */ | |
1754 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 AK |
1755 | struct in_addr originator_ip, bool oper_up, |
1756 | uint16_t df_pref) | |
c44ab6f1 AK |
1757 | { |
1758 | char buf[ESI_STR_LEN]; | |
1759 | struct bgp_evpn_es *es; | |
1760 | bool new_es = true; | |
74e2bd89 | 1761 | bool regen_esr = false; |
c44ab6f1 AK |
1762 | |
1763 | /* create the new es */ | |
1764 | es = bgp_evpn_es_find(esi); | |
1765 | if (es) { | |
1766 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1767 | new_es = false; | |
1768 | } else { | |
1769 | es = bgp_evpn_es_new(bgp, esi); | |
1770 | if (!es) { | |
1771 | flog_err(EC_BGP_ES_CREATE, | |
1772 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
1773 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
1774 | return -1; | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1779 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u", es->esi_str, |
1780 | &originator_ip, df_pref); | |
c44ab6f1 AK |
1781 | |
1782 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
1783 | if (df_pref != es->df_pref) { |
1784 | es->df_pref = df_pref; | |
1785 | regen_esr = true; | |
1786 | } | |
c44ab6f1 AK |
1787 | bgp_evpn_es_local_info_set(bgp, es); |
1788 | ||
1789 | /* import all remote Type-4 routes in the ES table */ | |
1790 | if (new_es) | |
1791 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
1792 | true /* install */); | |
1793 | ||
1794 | /* create and advertise EAD-EVI routes for the ES - | |
1795 | * XXX - till an ES-EVI reference is created there is really nothing to | |
1796 | * advertise | |
1797 | */ | |
1798 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
1799 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
1800 | ||
1801 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI | |
1802 | * can be generated even if the link is inactive. | |
1803 | */ | |
1804 | if (oper_up) | |
74e2bd89 | 1805 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
1806 | else |
1807 | bgp_evpn_local_es_down(bgp, es); | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | ||
9e0c2fd1 AK |
1812 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
1813 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
1814 | { |
1815 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
1816 | struct listnode *node; | |
1817 | struct bgp_evpn_es_vtep *es_vtep; | |
1818 | bool first = true; | |
ec779825 | 1819 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
1820 | |
1821 | vtep_str[0] = '\0'; | |
1822 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1823 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 1824 | |
c44ab6f1 | 1825 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 1826 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 1827 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 1828 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
1829 | |
1830 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
1831 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
1832 | if (first) | |
c44ab6f1 | 1833 | first = false; |
9e0c2fd1 AK |
1834 | else |
1835 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 1836 | strlcat(vtep_str, |
ec779825 AK |
1837 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
1838 | sizeof(ip_buf)), | |
23d0a753 | 1839 | vtep_str_size); |
9e0c2fd1 AK |
1840 | strlcat(vtep_str, "(", vtep_str_size); |
1841 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
1842 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
1843 | } |
1844 | ||
1845 | return vtep_str; | |
1846 | } | |
1847 | ||
c44ab6f1 AK |
1848 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
1849 | struct bgp_evpn_es_vtep *es_vtep) | |
1850 | { | |
1851 | json_object *json_vtep_entry; | |
1852 | json_object *json_flags; | |
ec779825 | 1853 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
1854 | |
1855 | json_vtep_entry = json_object_new_object(); | |
1856 | ||
ec779825 AK |
1857 | json_object_string_add( |
1858 | json_vtep_entry, "vtep_ip", | |
1859 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
1860 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
1861 | BGP_EVPNES_VTEP_ACTIVE)) { | |
1862 | json_flags = json_object_new_array(); | |
1863 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1864 | json_array_string_add(json_flags, "esr"); | |
1865 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
1866 | json_array_string_add(json_flags, "active"); | |
1867 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
1868 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
1869 | json_object_int_add(json_vtep_entry, "dfPreference", | |
1870 | es_vtep->df_pref); | |
1871 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
1872 | es_vtep->df_pref); | |
1873 | } | |
c44ab6f1 AK |
1874 | } |
1875 | ||
1876 | json_object_array_add(json_vteps, | |
1877 | json_vtep_entry); | |
1878 | } | |
1879 | ||
74e2bd89 AK |
1880 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
1881 | struct bgp_evpn_es *es) | |
1882 | { | |
1883 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
1884 | struct listnode *node; | |
1885 | struct bgp_evpn_es_vtep *es_vtep; | |
1886 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
1887 | ||
1888 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1889 | vtep_flag_str[0] = '\0'; | |
1890 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1891 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
1892 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
1893 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
1894 | ||
1895 | if (!strlen(vtep_flag_str)) | |
1896 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
1897 | ||
ec779825 | 1898 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
1899 | vtep_flag_str); |
1900 | ||
1901 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
1902 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
1903 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
1904 | sizeof(alg_buf)), | |
1905 | es_vtep->df_pref); | |
1906 | else | |
1907 | vty_out(vty, "\n"); | |
1908 | } | |
1909 | } | |
1910 | ||
c44ab6f1 AK |
1911 | static void bgp_evpn_es_show_entry(struct vty *vty, |
1912 | struct bgp_evpn_es *es, json_object *json) | |
1913 | { | |
1914 | char buf1[RD_ADDRSTRLEN]; | |
1915 | struct listnode *node; | |
1916 | struct bgp_evpn_es_vtep *es_vtep; | |
1917 | ||
1918 | if (json) { | |
1919 | json_object *json_vteps; | |
1920 | json_object *json_types; | |
1921 | ||
1922 | json_object_string_add(json, "esi", es->esi_str); | |
1923 | json_object_string_add(json, "rd", | |
1924 | prefix_rd2str(&es->prd, buf1, | |
1925 | sizeof(buf1))); | |
1926 | ||
1927 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
1928 | json_types = json_object_new_array(); | |
1929 | if (es->flags & BGP_EVPNES_LOCAL) | |
1930 | json_array_string_add(json_types, "local"); | |
1931 | if (es->flags & BGP_EVPNES_REMOTE) | |
1932 | json_array_string_add(json_types, "remote"); | |
1933 | json_object_object_add(json, "type", json_types); | |
1934 | } | |
1935 | ||
1936 | if (listcount(es->es_vtep_list)) { | |
1937 | json_vteps = json_object_new_array(); | |
1938 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
1939 | node, es_vtep)) { | |
1940 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
1941 | } | |
1942 | json_object_object_add(json, "vteps", json_vteps); | |
1943 | } | |
1944 | json_object_int_add(json, "vniCount", | |
1945 | listcount(es->es_evi_list)); | |
1946 | } else { | |
1947 | char type_str[4]; | |
1948 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
1949 | ||
1950 | type_str[0] = '\0'; | |
1951 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 1952 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 1953 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 1954 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 1955 | if (es->inconsistencies) |
9e0c2fd1 | 1956 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 1957 | |
9e0c2fd1 | 1958 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
1959 | |
1960 | if (es->flags & BGP_EVPNES_LOCAL) | |
1961 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
1962 | else | |
9e0c2fd1 | 1963 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
1964 | |
1965 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
1966 | es->esi_str, type_str, buf1, | |
1967 | listcount(es->es_evi_list), vtep_str); | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
1972 | struct bgp_evpn_es *es, json_object *json) | |
1973 | { | |
ec779825 | 1974 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 1975 | |
c44ab6f1 AK |
1976 | if (json) { |
1977 | json_object *json_flags; | |
1978 | json_object *json_incons; | |
74e2bd89 AK |
1979 | json_object *json_vteps; |
1980 | struct listnode *node; | |
1981 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
1982 | |
1983 | /* Add the "brief" info first */ | |
1984 | bgp_evpn_es_show_entry(vty, es, json); | |
1985 | if (es->flags & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI)) { | |
1986 | json_flags = json_object_new_array(); | |
1987 | if (es->flags & BGP_EVPNES_OPER_UP) | |
1988 | json_array_string_add(json_flags, "up"); | |
1989 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
1990 | json_array_string_add(json_flags, | |
1991 | "advertiseEVI"); | |
1992 | json_object_object_add(json, "flags", json_flags); | |
1993 | } | |
1994 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 1995 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 1996 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
1997 | json_object_int_add(json, "remoteVniCount", |
1998 | es->remote_es_evi_cnt); | |
229587fb AK |
1999 | json_object_int_add(json, "vrfCount", |
2000 | listcount(es->es_vrf_list)); | |
2001 | json_object_int_add(json, "macipPathCount", | |
2002 | listcount(es->macip_path_list)); | |
c44ab6f1 AK |
2003 | json_object_int_add(json, "inconsistentVniVtepCount", |
2004 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2005 | if (listcount(es->es_vtep_list)) { |
2006 | json_vteps = json_object_new_array(); | |
2007 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2008 | es_vtep)) { | |
2009 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2010 | } | |
2011 | json_object_object_add(json, "vteps", json_vteps); | |
2012 | } | |
c44ab6f1 AK |
2013 | if (es->inconsistencies) { |
2014 | json_incons = json_object_new_array(); | |
2015 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2016 | json_array_string_add(json_incons, | |
2017 | "vni-vtep-mismatch"); | |
2018 | json_object_object_add(json, "inconsistencies", | |
2019 | json_incons); | |
2020 | } | |
2021 | } else { | |
2022 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2023 | char type_str[4]; | |
c44ab6f1 AK |
2024 | char buf1[RD_ADDRSTRLEN]; |
2025 | ||
2026 | type_str[0] = '\0'; | |
2027 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2028 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2029 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2030 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2031 | |
c44ab6f1 AK |
2032 | if (es->flags & BGP_EVPNES_LOCAL) |
2033 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2034 | else | |
9e0c2fd1 | 2035 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2036 | |
2037 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2038 | vty_out(vty, " Type: %s\n", type_str); | |
2039 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2040 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2041 | if (es->flags & BGP_EVPNES_LOCAL) |
2042 | vty_out(vty, " Local ES DF preference: %u\n", | |
2043 | es->df_pref); | |
c44ab6f1 AK |
2044 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2045 | vty_out(vty, " Remote VNI Count: %d\n", | |
2046 | es->remote_es_evi_cnt); | |
229587fb AK |
2047 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
2048 | vty_out(vty, " MACIP Path Count: %d\n", | |
2049 | listcount(es->macip_path_list)); | |
c44ab6f1 AK |
2050 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2051 | es->incons_evi_vtep_cnt); | |
2052 | if (es->inconsistencies) { | |
2053 | incons_str[0] = '\0'; | |
2054 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2055 | strlcat(incons_str, "vni-vtep-mismatch", |
2056 | sizeof(incons_str)); | |
c44ab6f1 | 2057 | } else { |
9e0c2fd1 | 2058 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2059 | } |
2060 | vty_out(vty, " Inconsistencies: %s\n", | |
2061 | incons_str); | |
74e2bd89 AK |
2062 | if (listcount(es->es_vtep_list)) { |
2063 | vty_out(vty, " VTEPs:\n"); | |
2064 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2065 | } | |
c44ab6f1 AK |
2066 | vty_out(vty, "\n"); |
2067 | } | |
2068 | } | |
2069 | ||
2070 | /* Display all ESs */ | |
2071 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2072 | { | |
2073 | struct bgp_evpn_es *es; | |
9c7edc03 | 2074 | json_object *json_array = NULL; |
c44ab6f1 AK |
2075 | json_object *json = NULL; |
2076 | ||
2077 | if (uj) { | |
2078 | /* create an array of ESs */ | |
2079 | json_array = json_object_new_array(); | |
2080 | } else { | |
2081 | if (!detail) { | |
2082 | vty_out(vty, | |
2083 | "ES Flags: L local, R remote, I inconsistent\n"); | |
2084 | vty_out(vty, | |
2085 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2086 | vty_out(vty, | |
2087 | "%-30s %-5s %-21s %-8s %s\n", | |
2088 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2093 | if (uj) | |
2094 | /* create a separate json object for each ES */ | |
2095 | json = json_object_new_object(); | |
2096 | if (detail) | |
2097 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2098 | else | |
2099 | bgp_evpn_es_show_entry(vty, es, json); | |
2100 | /* add ES to the json array */ | |
2101 | if (uj) | |
2102 | json_object_array_add(json_array, json); | |
2103 | } | |
2104 | ||
2105 | /* print the array of json-ESs */ | |
2106 | if (uj) { | |
2107 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2108 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2109 | json_object_free(json_array); | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | /* Display specific ES */ | |
2114 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2115 | { | |
2116 | struct bgp_evpn_es *es; | |
2117 | json_object *json = NULL; | |
2118 | ||
2119 | if (uj) | |
2120 | json = json_object_new_object(); | |
2121 | ||
2122 | es = bgp_evpn_es_find(esi); | |
2123 | if (es) { | |
2124 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2125 | } else { | |
2126 | if (!uj) | |
2127 | vty_out(vty, "ESI not found\n"); | |
2128 | } | |
2129 | ||
2130 | if (uj) { | |
2131 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2132 | json, JSON_C_TO_STRING_PRETTY)); | |
2133 | json_object_free(json); | |
2134 | } | |
2135 | } | |
2136 | ||
c589d847 AK |
2137 | /*****************************************************************************/ |
2138 | /* Ethernet Segment to VRF association - | |
2139 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2140 | * triggers the creation of an ES-VRF entry. | |
2141 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2142 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2143 | * a /32 or host route entry in the dataplane. If the destination of | |
2144 | * the host route is a remote-ES the route is programmed with the | |
2145 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2146 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2147 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2148 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2149 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2150 | * allowing for a faster failover. | |
2151 | * | |
2152 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2153 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2154 | * in that VRF. | |
2155 | */ | |
2156 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2157 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2158 | bool v4_nhg) | |
c589d847 | 2159 | { |
8bcb09a1 AK |
2160 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2161 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2162 | struct listnode *node; |
2163 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2164 | struct nexthop nh; |
2165 | struct zapi_nexthop *api_nh; | |
2166 | struct zapi_nhg api_nhg = {}; | |
2167 | ||
2168 | /* Skip installation of L3-NHG if host routes used */ | |
2169 | if (!nhg_id) | |
2170 | return; | |
c589d847 AK |
2171 | |
2172 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2173 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2174 | es_vrf->bgp_vrf->vrf_id, | |
2175 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2176 | ||
2177 | /* only the gateway ip changes for each NH. rest of the params | |
2178 | * are constant | |
2179 | */ | |
2180 | memset(&nh, 0, sizeof(nh)); | |
2181 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2182 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2183 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2184 | nh.weight = 1; | |
2185 | nh.type = | |
2186 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2187 | ||
2188 | api_nhg.id = nhg_id; | |
c589d847 | 2189 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2190 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2191 | continue; | |
2192 | ||
2193 | /* overwrite the gw */ | |
2194 | if (v4_nhg) | |
2195 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2196 | else | |
2197 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2198 | es_vtep->vtep_ip); | |
2199 | ||
2200 | /* convert to zapi format */ | |
2201 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2202 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2203 | ||
2204 | ++api_nhg.nexthop_num; | |
2205 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2206 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2207 | &es_vtep->vtep_ip, | |
2208 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2209 | } |
2210 | ||
8bcb09a1 AK |
2211 | if (!api_nhg.nexthop_num) |
2212 | return; | |
2213 | ||
2214 | if (api_nhg.nexthop_num > MULTIPATH_NUM) | |
2215 | return; | |
2216 | ||
2217 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); | |
c589d847 AK |
2218 | } |
2219 | ||
8bcb09a1 AK |
2220 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2221 | { | |
2222 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2223 | return false; | |
2224 | ||
2225 | /* Check socket. */ | |
2226 | if (!zclient || zclient->sock < 0) | |
2227 | return false; | |
2228 | ||
2229 | return true; | |
2230 | } | |
2231 | ||
2232 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2233 | { |
8bcb09a1 AK |
2234 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2235 | return; | |
2236 | ||
2237 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2238 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2239 | } | |
2240 | ||
2241 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2242 | bool v4_nhg) | |
2243 | { | |
2244 | struct zapi_nhg api_nhg = {}; | |
2245 | ||
2246 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2247 | ||
2248 | /* Skip installation of L3-NHG if host routes used */ | |
2249 | if (!api_nhg.id) | |
2250 | return; | |
2251 | ||
c589d847 | 2252 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2253 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2254 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2255 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2256 | ||
2257 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2258 | } | |
c589d847 | 2259 | |
8bcb09a1 AK |
2260 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2261 | { | |
2262 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2263 | return; | |
2264 | ||
2265 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2266 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2267 | } |
2268 | ||
2269 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2270 | { | |
2271 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2272 | return; | |
2273 | ||
2274 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2275 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2276 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2277 | es_vrf->nhg_id); | |
2278 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2279 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
2280 | } | |
2281 | ||
2282 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2283 | { | |
2284 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2285 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2286 | return; | |
2287 | } | |
2288 | ||
2289 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2290 | if (!update) | |
2291 | return; | |
2292 | } else { | |
2293 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2294 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2295 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2296 | es_vrf->nhg_id); | |
2297 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
2298 | } | |
2299 | ||
2300 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2301 | } | |
2302 | ||
2303 | /* when a VTEP is activated or de-activated against an ES associated | |
2304 | * VRFs' NHG needs to be updated | |
2305 | */ | |
2306 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2307 | { | |
2308 | struct bgp_evpn_es_vrf *es_vrf; | |
2309 | struct listnode *es_vrf_node; | |
2310 | ||
2311 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2312 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2313 | ||
2314 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2315 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2316 | } | |
2317 | ||
2318 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2319 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2320 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2321 | { | |
2322 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2323 | } | |
2324 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2325 | ||
2326 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2327 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2328 | { | |
2329 | /* Initialize the ES-VRF RB tree */ | |
2330 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2331 | } | |
2332 | ||
2333 | /* find the ES-VRF in the per-VRF RB tree */ | |
2334 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2335 | struct bgp *bgp_vrf) | |
2336 | { | |
2337 | struct bgp_evpn_es_vrf es_vrf; | |
2338 | ||
2339 | es_vrf.es = es; | |
2340 | ||
2341 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2342 | } | |
2343 | ||
2344 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2345 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2346 | struct bgp *bgp_vrf) | |
2347 | { | |
2348 | struct bgp_evpn_es_vrf *es_vrf; | |
2349 | ||
2350 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2351 | ||
2352 | es_vrf->es = es; | |
2353 | es_vrf->bgp_vrf = bgp_vrf; | |
2354 | ||
2355 | /* insert into the VRF-ESI rb tree */ | |
2356 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2357 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2358 | return NULL; | |
2359 | } | |
2360 | ||
2361 | /* add to the ES's VRF list */ | |
2362 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2363 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2364 | ||
2365 | /* setup the L3 NHG id for the ES */ | |
2366 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2367 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2368 | ||
c589d847 | 2369 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2370 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2371 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2372 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2373 | ||
2374 | return es_vrf; | |
2375 | } | |
2376 | ||
2377 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2378 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2379 | { | |
2380 | struct bgp_evpn_es *es = es_vrf->es; | |
2381 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2382 | ||
2383 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2384 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2385 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2386 | ||
2387 | /* Remove the NHG resources */ | |
2388 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2389 | if (es_vrf->nhg_id) | |
2390 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2391 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2392 | if (es_vrf->v6_nhg_id) |
2393 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2394 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2395 | |
2396 | /* remove from the ES's VRF list */ | |
2397 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2398 | ||
2399 | /* remove from the VRF-ESI rb tree */ | |
2400 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2401 | ||
2402 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2403 | } | |
2404 | ||
2405 | /* deref and delete if there are no references */ | |
2406 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2407 | { | |
2408 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2409 | ||
2410 | if (!es_vrf) | |
2411 | return; | |
2412 | ||
2413 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2414 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2415 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2416 | es_vrf->bgp_vrf->vrf_id); | |
2417 | ||
2418 | es_evi->es_vrf = NULL; | |
2419 | if (es_vrf->ref_cnt) | |
2420 | --es_vrf->ref_cnt; | |
2421 | ||
2422 | if (!es_vrf->ref_cnt) | |
2423 | bgp_evpn_es_vrf_delete(es_vrf); | |
2424 | } | |
2425 | ||
2426 | /* find or create and reference */ | |
2427 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2428 | { | |
2429 | struct bgp_evpn_es *es = es_evi->es; | |
2430 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2431 | struct bgp *old_bgp_vrf = NULL; | |
2432 | ||
2433 | if (es_vrf) | |
2434 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2435 | ||
2436 | if (old_bgp_vrf == bgp_vrf) | |
2437 | return; | |
2438 | ||
2439 | /* deref the old ES-VRF */ | |
2440 | bgp_evpn_es_vrf_deref(es_evi); | |
2441 | ||
2442 | if (!bgp_vrf) | |
2443 | return; | |
2444 | ||
2445 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2446 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2447 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2448 | ||
2449 | /* find-create the new ES-VRF */ | |
2450 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2451 | if (!es_vrf) | |
2452 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2453 | if (!es_vrf) | |
2454 | return; | |
2455 | ||
2456 | es_evi->es_vrf = es_vrf; | |
2457 | ++es_vrf->ref_cnt; | |
2458 | } | |
2459 | ||
2460 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2461 | * associated ES-EVI entries | |
2462 | */ | |
2463 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2464 | { | |
2465 | struct bgp_evpn_es_evi *es_evi; | |
2466 | ||
2467 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2468 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2469 | ||
2470 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2471 | bgp_evpn_es_vrf_deref(es_evi); | |
2472 | } | |
2473 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2474 | { | |
2475 | struct bgp_evpn_es_evi *es_evi; | |
2476 | ||
2477 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2478 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2479 | ||
2480 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2481 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2482 | } | |
2483 | ||
6348981a AK |
2484 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2485 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2486 | uint32_t *nhg_p) | |
2487 | { | |
2488 | esi_t *esi; | |
2489 | struct bgp_evpn_es *es; | |
2490 | struct bgp_evpn_es_vrf *es_vrf; | |
2491 | struct bgp_path_info *parent_pi; | |
2492 | struct bgp_node *rn; | |
2493 | struct prefix_evpn *evp; | |
2494 | struct bgp_path_info *mpinfo; | |
2495 | ||
2496 | *nhg_p = 0; | |
2497 | ||
229587fb AK |
2498 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
2499 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
2500 | return false; | |
2501 | ||
6348981a AK |
2502 | parent_pi = get_route_parent_evpn(pi); |
2503 | if (!parent_pi) | |
2504 | return false; | |
2505 | ||
2506 | rn = parent_pi->net; | |
2507 | if (!rn) | |
2508 | return false; | |
2509 | ||
2510 | evp = (struct prefix_evpn *)&rn->p; | |
2511 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2512 | return false; | |
2513 | ||
6348981a AK |
2514 | /* non-es path, use legacy-exploded multipath */ |
2515 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2516 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2517 | return false; | |
2518 | ||
2519 | /* if the ES-VRF is not setup or if the NHG has not been installed | |
2520 | * we cannot install the route yet, return a 0-NHG to indicate | |
2521 | * that | |
2522 | */ | |
2523 | es = bgp_evpn_es_find(esi); | |
2524 | if (!es) | |
2525 | return true; | |
2526 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2527 | if (!es_vrf || !(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2528 | return true; | |
2529 | ||
2530 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2531 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2532 | *nhg_p = es_vrf->v6_nhg_id; |
2533 | else | |
2534 | *nhg_p = es_vrf->nhg_id; | |
2535 | ||
2536 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2537 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
2538 | /* if any of the paths of have a different ESI we can't use | |
2539 | * the NHG associated with the ES. fallback to legacy-exploded | |
2540 | * multipath | |
2541 | */ | |
2542 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2543 | sizeof(*esi))) | |
2544 | return false; | |
2545 | } | |
2546 | ||
2547 | return true; | |
2548 | } | |
2549 | ||
229587fb AK |
2550 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2551 | struct bgp_evpn_es_vrf *es_vrf, | |
2552 | json_object *json) | |
2553 | { | |
2554 | struct bgp_evpn_es *es = es_vrf->es; | |
2555 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2556 | ||
2557 | if (json) { | |
2558 | json_object *json_types; | |
2559 | ||
2560 | json_object_string_add(json, "esi", es->esi_str); | |
2561 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2562 | ||
2563 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2564 | json_types = json_object_new_array(); | |
2565 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2566 | json_array_string_add(json_types, "active"); | |
2567 | json_object_object_add(json, "flags", json_types); | |
2568 | } | |
2569 | ||
2570 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2571 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2572 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2573 | } else { | |
2574 | char flags_str[4]; | |
2575 | ||
2576 | flags_str[0] = '\0'; | |
2577 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2578 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2579 | ||
2580 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2581 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2582 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2587 | struct bgp_evpn_es *es) | |
2588 | { | |
2589 | json_object *json = NULL; | |
2590 | struct listnode *es_vrf_node; | |
2591 | struct bgp_evpn_es_vrf *es_vrf; | |
2592 | ||
2593 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2594 | /* create a separate json object for each ES-VRF */ | |
2595 | if (json_array) | |
2596 | json = json_object_new_object(); | |
2597 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2598 | /* add ES-VRF to the json array */ | |
2599 | if (json_array) | |
2600 | json_object_array_add(json_array, json); | |
2601 | } | |
2602 | } | |
2603 | ||
2604 | /* Display all ES VRFs */ | |
2605 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
2606 | { | |
2607 | json_object *json_array = NULL; | |
2608 | ||
2609 | if (uj) { | |
2610 | /* create an array of ESs */ | |
2611 | json_array = json_object_new_array(); | |
2612 | } else { | |
2613 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
2614 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
2615 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
2616 | } | |
2617 | ||
2618 | if (es) { | |
2619 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2620 | } else { | |
2621 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
2622 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2623 | } | |
2624 | ||
2625 | /* print the array of json-ESs */ | |
2626 | if (uj) { | |
2627 | vty_out(vty, "%s\n", | |
2628 | json_object_to_json_string_ext( | |
2629 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2630 | json_object_free(json_array); | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | /* Display specific ES VRF */ | |
2635 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2636 | { | |
2637 | struct bgp_evpn_es *es; | |
2638 | ||
2639 | es = bgp_evpn_es_find(esi); | |
2640 | if (es) { | |
2641 | bgp_evpn_es_vrf_show(vty, uj, es); | |
2642 | } else { | |
2643 | if (!uj) | |
2644 | vty_out(vty, "ESI not found\n"); | |
2645 | } | |
2646 | } | |
2647 | ||
c44ab6f1 AK |
2648 | /*****************************************************************************/ |
2649 | /* Ethernet Segment to EVI association - | |
2650 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
2651 | * (bgpevpn->es_evi_rb_tree). | |
2652 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
2653 | * advertises an EAD-EVI (Type-1 EVPN) route | |
2654 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
2655 | * it. | |
2656 | */ | |
2657 | ||
2658 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
2659 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
2660 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
2661 | * VTEPs for which both routes have been rxed are activated. Activation | |
2662 | * creates a NHG in the parent ES. | |
2663 | */ | |
2664 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
2665 | { | |
2666 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
2667 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
2668 | ||
2669 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
2670 | } | |
2671 | ||
2672 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
2673 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2674 | { | |
2675 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2676 | ||
2677 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
2678 | ||
2679 | evi_vtep->es_evi = es_evi; | |
2680 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
2681 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
2682 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2683 | ||
2684 | return evi_vtep; | |
2685 | } | |
2686 | ||
2687 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2688 | { | |
2689 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
2690 | ||
2691 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
2692 | /* as long as there is some reference we can't free it */ | |
2693 | return; | |
2694 | ||
2695 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2696 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
2697 | } | |
2698 | ||
2699 | /* check if VTEP is already part of the list */ | |
2700 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
2701 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2702 | { | |
2703 | struct listnode *node = NULL; | |
2704 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2705 | ||
2706 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
2707 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
2708 | return evi_vtep; | |
2709 | } | |
2710 | return NULL; | |
2711 | } | |
2712 | ||
2713 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
2714 | * EAD-per-EVI routes are rxed from it. | |
2715 | */ | |
2716 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
2717 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2718 | { | |
2719 | bool old_active; | |
2720 | bool new_active; | |
2721 | ||
2722 | old_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2723 | ||
2724 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
2725 | * before it can be activated. | |
2726 | */ | |
2727 | if ((evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD) == | |
2728 | BGP_EVPN_EVI_VTEP_EAD) | |
2729 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2730 | else | |
2731 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2732 | ||
2733 | new_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2734 | ||
2735 | if (old_active == new_active) | |
2736 | return; | |
2737 | ||
2738 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2739 | zlog_debug("es %s evi %u vtep %pI4 %s", |
2740 | evi_vtep->es_evi->es->esi_str, | |
2741 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2742 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
2743 | |
2744 | /* add VTEP to parent es */ | |
2745 | if (new_active) { | |
2746 | struct bgp_evpn_es_vtep *es_vtep; | |
2747 | ||
2748 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
2749 | evi_vtep->vtep_ip, false /*esr*/, |
2750 | 0, 0); | |
c44ab6f1 AK |
2751 | evi_vtep->es_vtep = es_vtep; |
2752 | } else { | |
2753 | if (evi_vtep->es_vtep) { | |
2754 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
2755 | false /*esr*/); | |
2756 | evi_vtep->es_vtep = NULL; | |
2757 | } | |
2758 | } | |
2759 | /* queue up the parent es for background consistency checks */ | |
2760 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
2761 | } | |
2762 | ||
2763 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
2764 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
2765 | bool ead_es) | |
2766 | { | |
2767 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2768 | ||
2769 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
2770 | ||
2771 | if (!evi_vtep) | |
2772 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
2773 | ||
2774 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2775 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
2776 | evi_vtep->es_evi->es->esi_str, | |
2777 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2778 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
2779 | |
2780 | if (ead_es) | |
2781 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
2782 | else | |
2783 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
2784 | ||
2785 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
2786 | } | |
2787 | ||
2788 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
2789 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
2790 | bool ead_es) | |
2791 | { | |
2792 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2793 | ||
2794 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
2795 | if (!evi_vtep) | |
2796 | return; | |
2797 | ||
2798 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2799 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
2800 | evi_vtep->es_evi->es->esi_str, | |
2801 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
2802 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
2803 | |
2804 | if (ead_es) | |
2805 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
2806 | else | |
2807 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
2808 | ||
2809 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
2810 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
2811 | } | |
2812 | ||
2813 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
2814 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
2815 | const struct bgp_evpn_es_evi *es_evi2) | |
2816 | { | |
2817 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
2818 | } | |
2819 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
2820 | ||
2821 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
2822 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
2823 | struct bgpevpn *vpn) | |
2824 | { | |
2825 | struct bgp_evpn_es_evi es_evi; | |
2826 | ||
2827 | es_evi.es = es; | |
2828 | ||
2829 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
2830 | } | |
2831 | ||
2832 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
2833 | * tables. | |
2834 | */ | |
2835 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
2836 | struct bgpevpn *vpn) | |
2837 | { | |
2838 | struct bgp_evpn_es_evi *es_evi; | |
2839 | ||
2840 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
2841 | ||
2842 | es_evi->es = es; | |
2843 | es_evi->vpn = vpn; | |
2844 | ||
2845 | /* Initialise the VTEP list */ | |
2846 | es_evi->es_evi_vtep_list = list_new(); | |
2847 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
2848 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
2849 | ||
2850 | /* insert into the VNI-ESI rb tree */ | |
2851 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
2852 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
2853 | return NULL; | |
2854 | } | |
2855 | ||
2856 | /* add to the ES's VNI list */ | |
2857 | listnode_init(&es_evi->es_listnode, es_evi); | |
2858 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
2859 | ||
c589d847 AK |
2860 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
2861 | ||
c44ab6f1 AK |
2862 | return es_evi; |
2863 | } | |
2864 | ||
2865 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
2866 | * up the memory. | |
2867 | */ | |
2868 | static void bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
2869 | { | |
2870 | struct bgp_evpn_es *es = es_evi->es; | |
2871 | struct bgpevpn *vpn = es_evi->vpn; | |
2872 | ||
2873 | /* cannot free the element as long as there is a local or remote | |
2874 | * reference | |
2875 | */ | |
2876 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
2877 | return; | |
2878 | ||
c589d847 AK |
2879 | bgp_evpn_es_vrf_deref(es_evi); |
2880 | ||
c44ab6f1 AK |
2881 | /* remove from the ES's VNI list */ |
2882 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
2883 | ||
2884 | /* remove from the VNI-ESI rb tree */ | |
2885 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
2886 | ||
2887 | /* free the VTEP list */ | |
2888 | list_delete(&es_evi->es_evi_vtep_list); | |
2889 | ||
2890 | /* remove from the VNI-ESI rb tree */ | |
2891 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
2892 | } | |
2893 | ||
2894 | /* init local info associated with the ES-EVI */ | |
2895 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
2896 | { | |
2897 | struct bgpevpn *vpn = es_evi->vpn; | |
2898 | ||
2899 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2900 | return; | |
2901 | ||
2902 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
2903 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
2904 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
2905 | } | |
2906 | ||
2907 | /* clear any local info associated with the ES-EVI */ | |
2908 | static void bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
2909 | { | |
2910 | struct bgpevpn *vpn = es_evi->vpn; | |
2911 | ||
2912 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2913 | return; | |
2914 | ||
2915 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
2916 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
2917 | ||
2918 | bgp_evpn_es_evi_free(es_evi); | |
2919 | } | |
2920 | ||
2921 | /* eval remote info associated with the ES */ | |
2922 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
2923 | { | |
2924 | struct bgp_evpn_es *es = es_evi->es; | |
2925 | ||
2926 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
2927 | if (listcount(es_evi->es_evi_vtep_list)) { | |
2928 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
2929 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
2930 | ++es->remote_es_evi_cnt; | |
2931 | /* set remote on the parent es */ | |
2932 | bgp_evpn_es_remote_info_re_eval(es); | |
2933 | } | |
2934 | } else { | |
2935 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
2936 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
2937 | if (es->remote_es_evi_cnt) | |
2938 | --es->remote_es_evi_cnt; | |
2939 | bgp_evpn_es_evi_free(es_evi); | |
2940 | /* check if "remote" can be cleared from the | |
2941 | * parent es. | |
2942 | */ | |
2943 | bgp_evpn_es_remote_info_re_eval(es); | |
2944 | } | |
2945 | } | |
2946 | } | |
2947 | ||
2948 | static void bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
2949 | { | |
2950 | struct prefix_evpn p; | |
2951 | struct bgp_evpn_es *es = es_evi->es; | |
2952 | struct bgp *bgp; | |
2953 | ||
2954 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
2955 | return; | |
2956 | ||
2957 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2958 | zlog_debug("del local es %s evi %u", | |
2959 | es_evi->es->esi_str, | |
2960 | es_evi->vpn->vni); | |
2961 | ||
2962 | bgp = bgp_get_evpn(); | |
2963 | ||
2964 | if (bgp) { | |
2965 | /* update EAD-ES with new list of VNIs */ | |
2966 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
2967 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
2968 | &es->esi, es->originator_ip); | |
2969 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
2970 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
2971 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
2972 | bgp->vrf_id, es->esi_str, | |
2973 | es_evi->vpn->vni); | |
2974 | } | |
2975 | ||
2976 | /* withdraw and delete EAD-EVI */ | |
2977 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
2978 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
2979 | &es->esi, es->originator_ip); | |
2980 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
2981 | es, es_evi->vpn, &p)) | |
2982 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
2983 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
2984 | bgp->vrf_id, es->esi_str, | |
2985 | es_evi->vpn->vni); | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | bgp_evpn_es_evi_local_info_clear(es_evi); | |
185fb14a | 2990 | |
c44ab6f1 AK |
2991 | } |
2992 | ||
2993 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
2994 | { | |
2995 | struct bgpevpn *vpn; | |
2996 | struct bgp_evpn_es *es; | |
2997 | struct bgp_evpn_es_evi *es_evi; | |
2998 | char buf[ESI_STR_LEN]; | |
2999 | ||
3000 | es = bgp_evpn_es_find(esi); | |
3001 | if (!es) { | |
3002 | flog_err( | |
3003 | EC_BGP_ES_CREATE, | |
3004 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3005 | bgp->vrf_id, vni, | |
3006 | esi_to_str(esi, buf, sizeof(buf))); | |
3007 | return -1; | |
3008 | } | |
3009 | ||
3010 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3011 | if (!vpn) { | |
3012 | flog_err( | |
3013 | EC_BGP_ES_CREATE, | |
3014 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3015 | bgp->vrf_id, vni, es->esi_str); | |
3016 | return -1; | |
3017 | } | |
3018 | ||
3019 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3020 | if (!es_evi) { | |
3021 | flog_err( | |
3022 | EC_BGP_ES_CREATE, | |
3023 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3024 | bgp->vrf_id, vni, es->esi_str); | |
3025 | return -1; | |
3026 | } | |
3027 | ||
3028 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3033 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3034 | { | |
3035 | struct bgpevpn *vpn; | |
3036 | struct prefix_evpn p; | |
3037 | struct bgp_evpn_es *es; | |
3038 | struct bgp_evpn_es_evi *es_evi; | |
3039 | char buf[ESI_STR_LEN]; | |
3040 | ||
3041 | es = bgp_evpn_es_find(esi); | |
3042 | if (!es) { | |
3043 | flog_err( | |
3044 | EC_BGP_ES_CREATE, | |
3045 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3046 | bgp->vrf_id, vni, | |
3047 | esi_to_str(esi, buf, sizeof(buf))); | |
3048 | return -1; | |
3049 | } | |
3050 | ||
3051 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3052 | if (!vpn) { | |
3053 | flog_err( | |
3054 | EC_BGP_ES_CREATE, | |
3055 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3056 | bgp->vrf_id, vni, es->esi_str); | |
3057 | return -1; | |
3058 | } | |
3059 | ||
3060 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3061 | zlog_debug("add local es %s evi %u", | |
3062 | es->esi_str, vni); | |
3063 | ||
3064 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3065 | ||
3066 | if (es_evi) { | |
3067 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3068 | /* dup */ | |
3069 | return 0; | |
3070 | } else { | |
3071 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3072 | if (!es_evi) | |
3073 | return -1; | |
3074 | } | |
3075 | ||
3076 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3077 | ||
3078 | /* generate an EAD-EVI for this new VNI */ | |
3079 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3080 | &es->esi, es->originator_ip); | |
3081 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3082 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) | |
3083 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3084 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3085 | bgp->vrf_id, es->esi_str, vni); | |
3086 | } | |
3087 | ||
3088 | /* update EAD-ES */ | |
3089 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3090 | &es->esi, es->originator_ip); | |
3091 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
3092 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3093 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3094 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3095 | bgp->vrf_id, es->esi_str, vni); | |
3096 | } | |
3097 | ||
3098 | return 0; | |
3099 | } | |
3100 | ||
3101 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3102 | * ES-EVI is implicity created on first VTEP's reference. | |
3103 | */ | |
3104 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3105 | const struct prefix_evpn *p) | |
3106 | { | |
3107 | char buf[ESI_STR_LEN]; | |
3108 | struct bgp_evpn_es *es; | |
3109 | struct bgp_evpn_es_evi *es_evi; | |
3110 | bool ead_es; | |
3111 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3112 | ||
3113 | if (!vpn) | |
3114 | /* local EAD-ES need not be sent back to zebra */ | |
3115 | return 0; | |
3116 | ||
3117 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3118 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3119 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3120 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3121 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3122 | |
3123 | es = bgp_evpn_es_find(esi); | |
3124 | if (!es) { | |
3125 | es = bgp_evpn_es_new(bgp, esi); | |
3126 | if (!es) { | |
3127 | flog_err(EC_BGP_ES_CREATE, | |
3128 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3129 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3130 | return -1; | |
3131 | } | |
3132 | } | |
3133 | ||
3134 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3135 | if (!es_evi) { | |
3136 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3137 | if (!es_evi) { | |
45a859f1 | 3138 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3139 | return -1; |
3140 | } | |
3141 | } | |
3142 | ||
3143 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3144 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3145 | ead_es); | |
3146 | ||
3147 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3148 | return 0; | |
3149 | } | |
3150 | ||
3151 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3152 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3153 | */ | |
3154 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3155 | const struct prefix_evpn *p) | |
3156 | { | |
3157 | char buf[ESI_STR_LEN]; | |
3158 | struct bgp_evpn_es *es; | |
3159 | struct bgp_evpn_es_evi *es_evi; | |
3160 | bool ead_es; | |
3161 | ||
3162 | if (!vpn) | |
3163 | /* local EAD-ES need not be sent back to zebra */ | |
3164 | return 0; | |
3165 | ||
3166 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3167 | zlog_debug( |
3168 | "del remote %s es %s evi %u vtep %pI4", | |
3169 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3170 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3171 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3172 | |
3173 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3174 | if (!es) { |
3175 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3176 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3177 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3178 | : "ead-evi", | |
3179 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3180 | sizeof(buf)), | |
3181 | vpn->vni, | |
3182 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3183 | return 0; |
2eef4f20 | 3184 | } |
c44ab6f1 | 3185 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3186 | if (!es_evi) { |
3187 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3188 | zlog_debug( | |
3189 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3190 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3191 | : "ead-evi", | |
3192 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3193 | sizeof(buf)), | |
3194 | vpn->vni, | |
3195 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3196 | return 0; |
2eef4f20 | 3197 | } |
c44ab6f1 AK |
3198 | |
3199 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3200 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3201 | ead_es); | |
3202 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3203 | return 0; | |
3204 | } | |
3205 | ||
3206 | /* Initialize the ES tables maintained per-L2_VNI */ | |
3207 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3208 | { | |
3209 | /* Initialize the ES-EVI RB tree */ | |
3210 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3211 | ||
3212 | /* Initialize the local list maintained for quick walks by type */ | |
3213 | vpn->local_es_evi_list = list_new(); | |
3214 | listset_app_node_mem(vpn->local_es_evi_list); | |
3215 | } | |
3216 | ||
3217 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3218 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3219 | { | |
3220 | struct bgp_evpn_es_evi *es_evi; | |
3221 | struct bgp_evpn_es_evi *es_evi_next; | |
3222 | ||
3223 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3224 | &vpn->es_evi_rb_tree, es_evi_next) { | |
3225 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3226 | } | |
3227 | ||
3228 | list_delete(&vpn->local_es_evi_list); | |
3229 | } | |
3230 | ||
3231 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3232 | struct bgp_evpn_es_evi *es_evi, |
3233 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3234 | { |
3235 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3236 | struct listnode *node; | |
3237 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3238 | bool first = true; | |
ec779825 | 3239 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3240 | |
3241 | vtep_str[0] = '\0'; | |
3242 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3243 | vtep_flag_str[0] = '\0'; | |
3244 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3245 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3246 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3247 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3248 | |
9e0c2fd1 AK |
3249 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3250 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3251 | if (first) | |
c44ab6f1 | 3252 | first = false; |
9e0c2fd1 AK |
3253 | else |
3254 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3255 | strlcat(vtep_str, |
ec779825 AK |
3256 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3257 | sizeof(ip_buf)), | |
23d0a753 | 3258 | vtep_str_size); |
9e0c2fd1 AK |
3259 | strlcat(vtep_str, "(", vtep_str_size); |
3260 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3261 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3262 | } |
3263 | ||
3264 | return vtep_str; | |
3265 | } | |
3266 | ||
3267 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3268 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3269 | { | |
3270 | json_object *json_vtep_entry; | |
3271 | json_object *json_flags; | |
ec779825 | 3272 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3273 | |
3274 | json_vtep_entry = json_object_new_object(); | |
3275 | ||
ec779825 AK |
3276 | json_object_string_add( |
3277 | json_vtep_entry, "vtep_ip", | |
3278 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3279 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3280 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3281 | json_flags = json_object_new_array(); | |
3282 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3283 | json_array_string_add(json_flags, "ead-per-es"); | |
3284 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3285 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3286 | json_object_object_add(json_vtep_entry, |
3287 | "flags", json_flags); | |
3288 | } | |
3289 | ||
3290 | json_object_array_add(json_vteps, | |
3291 | json_vtep_entry); | |
3292 | } | |
3293 | ||
3294 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3295 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3296 | { | |
3297 | struct listnode *node; | |
3298 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3299 | ||
3300 | if (json) { | |
3301 | json_object *json_vteps; | |
3302 | json_object *json_types; | |
3303 | ||
3304 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3305 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3306 | ||
3307 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3308 | BGP_EVPNES_EVI_REMOTE)) { | |
3309 | json_types = json_object_new_array(); | |
3310 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3311 | json_array_string_add(json_types, "local"); | |
3312 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3313 | json_array_string_add(json_types, "remote"); | |
3314 | json_object_object_add(json, "type", json_types); | |
3315 | } | |
3316 | ||
3317 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3318 | json_vteps = json_object_new_array(); | |
3319 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3320 | node, evi_vtep)) { | |
3321 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3322 | evi_vtep); | |
3323 | } | |
3324 | json_object_object_add(json, "vteps", json_vteps); | |
3325 | } | |
3326 | } else { | |
3327 | char type_str[4]; | |
3328 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3329 | ||
3330 | type_str[0] = '\0'; | |
3331 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3332 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3333 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3334 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3335 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3336 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3337 | |
9e0c2fd1 | 3338 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3339 | |
3340 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3341 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3342 | type_str, vtep_str); | |
3343 | } | |
3344 | } | |
3345 | ||
3346 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3347 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3348 | { | |
3349 | if (json) { | |
3350 | json_object *json_flags; | |
3351 | ||
3352 | /* Add the "brief" info first */ | |
3353 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3354 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3355 | json_flags = json_object_new_array(); | |
3356 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3357 | json_object_object_add(json, "flags", json_flags); | |
3358 | } | |
3359 | } else { | |
3360 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3361 | char type_str[4]; | |
3362 | ||
3363 | type_str[0] = '\0'; | |
3364 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3365 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3366 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3367 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3368 | |
9e0c2fd1 | 3369 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3370 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3371 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3372 | |
3373 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3374 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3375 | vty_out(vty, " Type: %s\n", type_str); | |
3376 | vty_out(vty, " Inconsistencies: %s\n", | |
3377 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3378 | "es-vtep-mismatch":"-"); | |
3379 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3380 | vty_out(vty, "\n"); | |
3381 | } | |
3382 | } | |
3383 | ||
3384 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3385 | json_object *json_array, bool detail) | |
3386 | { | |
3387 | struct bgp_evpn_es_evi *es_evi; | |
3388 | json_object *json = NULL; | |
3389 | ||
3390 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3391 | if (json_array) | |
3392 | /* create a separate json object for each ES */ | |
3393 | json = json_object_new_object(); | |
3394 | if (detail) | |
3395 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3396 | else | |
3397 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3398 | /* add ES to the json array */ | |
3399 | if (json_array) | |
3400 | json_object_array_add(json_array, json); | |
3401 | } | |
3402 | } | |
3403 | ||
3404 | struct es_evi_show_ctx { | |
3405 | struct vty *vty; | |
3406 | json_object *json; | |
3407 | int detail; | |
3408 | }; | |
3409 | ||
3410 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3411 | void *ctxt) | |
3412 | { | |
3413 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3414 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3415 | ||
3416 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3417 | } | |
3418 | ||
3419 | /* Display all ES EVIs */ | |
3420 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3421 | { | |
3422 | json_object *json_array = NULL; | |
3423 | struct es_evi_show_ctx wctx; | |
3424 | struct bgp *bgp; | |
3425 | ||
3426 | if (uj) { | |
3427 | /* create an array of ES-EVIs */ | |
3428 | json_array = json_object_new_array(); | |
3429 | } | |
3430 | ||
3431 | wctx.vty = vty; | |
3432 | wctx.json = json_array; | |
3433 | wctx.detail = detail; | |
3434 | ||
3435 | bgp = bgp_get_evpn(); | |
3436 | ||
3437 | if (!json_array && !detail) { | |
3438 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3439 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3440 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3441 | "VNI", "ESI", "Flags", "VTEPs"); | |
3442 | } | |
3443 | ||
3444 | if (bgp) | |
3445 | hash_iterate(bgp->vnihash, | |
3446 | (void (*)(struct hash_bucket *, | |
3447 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3448 | &wctx); | |
3449 | if (uj) { | |
3450 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3451 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3452 | json_object_free(json_array); | |
3453 | } | |
3454 | } | |
3455 | ||
3456 | /* Display specific ES EVI */ | |
3457 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3458 | bool uj, bool detail) | |
3459 | { | |
3460 | struct bgpevpn *vpn = NULL; | |
3461 | json_object *json_array = NULL; | |
3462 | struct bgp *bgp; | |
3463 | ||
3464 | if (uj) { | |
3465 | /* create an array of ES-EVIs */ | |
3466 | json_array = json_object_new_array(); | |
3467 | } | |
3468 | ||
3469 | bgp = bgp_get_evpn(); | |
3470 | if (bgp) | |
3471 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3472 | ||
3473 | if (vpn) { | |
3474 | if (!json_array && !detail) { | |
3475 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3476 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3477 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3478 | "VNI", "ESI", "Flags", "VTEPs"); | |
3479 | } | |
3480 | ||
3481 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3482 | } else { | |
3483 | if (!uj) | |
3484 | vty_out(vty, "VNI not found\n"); | |
3485 | } | |
3486 | ||
3487 | if (uj) { | |
3488 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3489 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3490 | json_object_free(json_array); | |
3491 | } | |
3492 | } | |
3493 | ||
3494 | /***************************************************************************** | |
3495 | * Ethernet Segment Consistency checks | |
3496 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3497 | * an inconsistency is detected it is simply logged (and displayed via | |
3498 | * show commands) at this point. A more drastic action can be executed (based | |
3499 | * on user config) in the future. | |
3500 | */ | |
3501 | /* queue up the es for background consistency checks */ | |
3502 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3503 | { | |
3504 | if (!bgp_mh_info->consistency_checking) | |
3505 | /* consistency checking is not enabled */ | |
3506 | return; | |
3507 | ||
3508 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3509 | /* already queued for consistency checking */ | |
3510 | return; | |
3511 | ||
3512 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3513 | listnode_init(&es->pend_es_listnode, es); | |
3514 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3515 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3516 | &es->pend_es_listnode); | |
3517 | } | |
3518 | ||
3519 | /* pull the ES from the consistency check list */ | |
3520 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3521 | { | |
3522 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3523 | return; | |
3524 | ||
3525 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3526 | list_delete_node(bgp_mh_info->pend_es_list, | |
3527 | &es->pend_es_listnode); | |
3528 | } | |
3529 | ||
3530 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3531 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3532 | struct bgp_evpn_es_evi *es_evi) | |
3533 | { | |
3534 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3535 | struct listnode *node; | |
3536 | uint32_t vtep_cnt = 0; | |
3537 | ||
3538 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3539 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3540 | ++vtep_cnt; | |
3541 | } | |
3542 | ||
3543 | return vtep_cnt; | |
3544 | } | |
3545 | ||
3546 | /* Number of active VTEPs associated with the ES */ | |
3547 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3548 | { | |
3549 | struct listnode *node; | |
3550 | uint32_t vtep_cnt = 0; | |
3551 | struct bgp_evpn_es_vtep *es_vtep; | |
3552 | ||
3553 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
3554 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3555 | ++vtep_cnt; | |
3556 | } | |
3557 | ||
3558 | return vtep_cnt; | |
3559 | } | |
3560 | ||
3561 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
3562 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
3563 | { | |
3564 | struct listnode *node; | |
3565 | struct bgp_evpn_es_vtep *next_es_vtep; | |
3566 | ||
3567 | if (es_vtep) | |
3568 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
3569 | else | |
3570 | node = listhead(es->es_vtep_list); | |
3571 | ||
3572 | for (; node; node = listnextnode_unchecked(node)) { | |
3573 | next_es_vtep = listgetdata(node); | |
3574 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3575 | return next_es_vtep; | |
3576 | } | |
3577 | ||
3578 | return NULL; | |
3579 | } | |
3580 | ||
3581 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
3582 | struct bgp_evpn_es_evi *es_evi, | |
3583 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3584 | { | |
3585 | struct listnode *node; | |
3586 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
3587 | ||
3588 | if (evi_vtep) | |
3589 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
3590 | else | |
3591 | node = listhead(es_evi->es_evi_vtep_list); | |
3592 | ||
3593 | for (; node; node = listnextnode_unchecked(node)) { | |
3594 | next_evi_vtep = listgetdata(node); | |
3595 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3596 | return next_evi_vtep; | |
3597 | } | |
3598 | ||
3599 | return NULL; | |
3600 | } | |
3601 | ||
3602 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
3603 | { | |
3604 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
3605 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3606 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
3607 | es_evi->es->esi_str, | |
3608 | es_evi->vpn->vni); | |
3609 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3610 | ||
3611 | /* update parent ES with the incosistency setting */ | |
3612 | if (!es_evi->es->incons_evi_vtep_cnt && | |
3613 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3614 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
3615 | es_evi->es->esi_str); | |
3616 | ++es_evi->es->incons_evi_vtep_cnt; | |
3617 | SET_FLAG(es_evi->es->inconsistencies, | |
3618 | BGP_EVPNES_INCONS_VTEP_LIST); | |
3619 | } | |
3620 | } | |
3621 | ||
3622 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
3623 | { | |
3624 | int proc_cnt = 0; | |
3625 | int es_active_vtep_cnt; | |
3626 | int evi_active_vtep_cnt; | |
3627 | struct bgp_evpn_es_evi *es_evi; | |
3628 | struct listnode *evi_node; | |
3629 | struct bgp_evpn_es_vtep *es_vtep; | |
3630 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3631 | ||
3632 | /* reset the inconsistencies and re-evaluate */ | |
3633 | es->incons_evi_vtep_cnt = 0; | |
3634 | es->inconsistencies = 0; | |
3635 | ||
3636 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
3637 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
3638 | evi_node, es_evi)) { | |
3639 | ++proc_cnt; | |
3640 | ||
3641 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
3642 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3643 | ||
3644 | evi_active_vtep_cnt = | |
3645 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
3646 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
3647 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3648 | continue; | |
3649 | } | |
3650 | ||
3651 | if (!es_active_vtep_cnt) | |
3652 | continue; | |
3653 | ||
3654 | es_vtep = NULL; | |
3655 | evi_vtep = NULL; | |
3656 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
3657 | es, es_vtep))) { | |
3658 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
3659 | evi_vtep); | |
3660 | if (!evi_vtep) { | |
3661 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3662 | break; | |
3663 | } | |
3664 | if (es_vtep->vtep_ip.s_addr != | |
3665 | evi_vtep->vtep_ip.s_addr) { | |
3666 | /* inconsistency detected; set it and move | |
3667 | * to the next evi | |
3668 | */ | |
3669 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3670 | break; | |
3671 | } | |
3672 | } | |
3673 | } | |
3674 | ||
3675 | return proc_cnt; | |
3676 | } | |
3677 | ||
3678 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
3679 | { | |
3680 | int proc_cnt = 0; | |
3681 | int es_cnt = 0; | |
3682 | struct listnode *node; | |
3683 | struct listnode *nextnode; | |
3684 | struct bgp_evpn_es *es; | |
3685 | ||
3686 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
3687 | node, nextnode, es)) { | |
3688 | ++es_cnt; | |
3689 | ++proc_cnt; | |
3690 | /* run consistency checks on the ES and remove it from the | |
3691 | * pending list | |
3692 | */ | |
3693 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
3694 | bgp_evpn_es_cons_checks_pend_del(es); | |
3695 | if (proc_cnt > 500) | |
3696 | break; | |
3697 | } | |
3698 | ||
3699 | /* restart the timer */ | |
3700 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3701 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3702 | &bgp_mh_info->t_cons_check); | |
3703 | ||
3704 | return 0; | |
3705 | } | |
3706 | ||
3707 | /*****************************************************************************/ | |
3708 | void bgp_evpn_mh_init(void) | |
3709 | { | |
3710 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
3711 | ||
3712 | /* setup ES tables */ | |
3713 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
3714 | /* local ES list */ | |
3715 | bgp_mh_info->local_es_list = list_new(); | |
3716 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
3717 | /* list of ESs with pending processing */ | |
3718 | bgp_mh_info->pend_es_list = list_new(); | |
3719 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
3720 | ||
3721 | /* config knobs - XXX add cli to control it */ | |
3722 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
3723 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
3724 | bgp_mh_info->install_l3nhg = false; |
3725 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
c44ab6f1 AK |
3726 | |
3727 | if (bgp_mh_info->consistency_checking) | |
3728 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, | |
3729 | NULL, BGP_EVPN_CONS_CHECK_INTERVAL, | |
3730 | &bgp_mh_info->t_cons_check); | |
3731 | ||
3732 | memset(&zero_esi_buf, 0, sizeof(esi_t)); | |
3733 | } | |
3734 | ||
3735 | void bgp_evpn_mh_finish(void) | |
3736 | { | |
3737 | struct bgp_evpn_es *es; | |
3738 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 3739 | |
45a859f1 AK |
3740 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
3741 | zlog_debug("evpn mh finish"); | |
3742 | ||
3743 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
3744 | es_next) { | |
3745 | bgp_evpn_es_local_info_clear(es); | |
c44ab6f1 | 3746 | } |
b3d6bc6e | 3747 | thread_cancel(&bgp_mh_info->t_cons_check); |
c44ab6f1 AK |
3748 | list_delete(&bgp_mh_info->local_es_list); |
3749 | list_delete(&bgp_mh_info->pend_es_list); | |
3750 | ||
3751 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
3752 | } |