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