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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); | |
333ad64b AK |
67 | static struct bgp_evpn_es_evi * |
68 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi); | |
c589d847 AK |
69 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es); |
70 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es); | |
26c03e43 AK |
71 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi); |
72 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller); | |
60605cbc | 73 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info); |
c44ab6f1 AK |
74 | |
75 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
8fc2ffb3 | 76 | static int bgp_evpn_run_consistency_checks(struct thread *t); |
090efa2f AK |
77 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info); |
78 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info); | |
c44ab6f1 AK |
79 | |
80 | /****************************************************************************** | |
81 | * per-ES (Ethernet Segment) routing table | |
82 | * | |
83 | * Following routes are added to the ES's routing table - | |
84 | * 1. Local and remote ESR (Type-4) | |
85 | * 2. Local EAD-per-ES (Type-1). | |
86 | * | |
87 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
88 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
89 | * being added to same ES). | |
90 | * | |
91 | * Note the following routes go into the VNI routing table (instead of the | |
92 | * ES routing table) - | |
93 | * 1. Remote EAD-per-ES | |
94 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 95 | */ |
185fb14a | 96 | |
c44ab6f1 AK |
97 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
98 | * installed in the ES's routing table. | |
185fb14a | 99 | */ |
c44ab6f1 | 100 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
101 | struct bgp_evpn_es *es, |
102 | struct bgp_dest *dest) | |
185fb14a AK |
103 | { |
104 | int ret = 0; | |
105 | afi_t afi = AFI_L2VPN; | |
106 | safi_t safi = SAFI_EVPN; | |
107 | struct bgp_path_info *old_select; /* old best */ | |
108 | struct bgp_path_info *new_select; /* new best */ | |
109 | struct bgp_path_info_pair old_and_new; | |
110 | ||
111 | /* Compute the best path. */ | |
09319b4e DS |
112 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
113 | afi, safi); | |
185fb14a AK |
114 | old_select = old_and_new.old; |
115 | new_select = old_and_new.new; | |
116 | ||
117 | /* | |
118 | * If the best path hasn't changed - see if something needs to be | |
119 | * updated | |
120 | */ | |
121 | if (old_select && old_select == new_select | |
09319b4e DS |
122 | && old_select->type == ZEBRA_ROUTE_BGP |
123 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
124 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
125 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
126 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 127 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
128 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
129 | true /*esr*/, | |
130 | old_select->attr->df_alg, | |
131 | old_select->attr->df_pref); | |
185fb14a AK |
132 | } |
133 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 134 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
135 | return ret; |
136 | } | |
137 | ||
138 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 139 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 140 | |
c44ab6f1 | 141 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
142 | * into the zebra RIB. |
143 | */ | |
144 | if (old_select || new_select) | |
09319b4e | 145 | bgp_bump_version(dest); |
185fb14a AK |
146 | |
147 | if (old_select) | |
09319b4e | 148 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 149 | if (new_select) { |
09319b4e DS |
150 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
151 | bgp_path_info_unset_flag(dest, new_select, | |
152 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
153 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
154 | } | |
155 | ||
156 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 157 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
158 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
159 | true /*esr */, new_select->attr->df_alg, | |
160 | new_select->attr->df_pref); | |
185fb14a AK |
161 | } else { |
162 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
163 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
164 | bgp_evpn_es_vtep_del( | |
165 | bgp, es, old_select->attr->nexthop, | |
166 | true /*esr*/); | |
185fb14a AK |
167 | } |
168 | ||
169 | /* Clear any route change flags. */ | |
09319b4e | 170 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
171 | |
172 | /* Reap old select bgp_path_info, if it has been removed */ | |
173 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 174 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
175 | |
176 | return ret; | |
177 | } | |
178 | ||
c44ab6f1 AK |
179 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
180 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
181 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
182 | struct bgp_path_info *parent_pi) | |
183 | { | |
184 | int ret = 0; | |
09319b4e | 185 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
186 | struct bgp_path_info *pi = NULL; |
187 | struct attr *attr_new = NULL; | |
188 | ||
189 | /* Create (or fetch) route within the VNI. | |
190 | * NOTE: There is no RD here. | |
191 | */ | |
09319b4e | 192 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
193 | |
194 | /* Check if route entry is already present. */ | |
09319b4e | 195 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
196 | if (pi->extra |
197 | && (struct bgp_path_info *)pi->extra->parent == | |
198 | parent_pi) | |
199 | break; | |
200 | ||
201 | if (!pi) { | |
202 | /* Add (or update) attribute to hash. */ | |
203 | attr_new = bgp_attr_intern(parent_pi->attr); | |
204 | ||
205 | /* Create new route with its attribute. */ | |
206 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 207 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
208 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
209 | bgp_path_info_extra_get(pi); | |
210 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
211 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
212 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
213 | } else { |
214 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
215 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 216 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
217 | return 0; |
218 | } | |
219 | /* The attribute has changed. */ | |
220 | /* Add (or update) attribute to hash. */ | |
221 | attr_new = bgp_attr_intern(parent_pi->attr); | |
222 | ||
223 | /* Restore route, if needed. */ | |
224 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 225 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
226 | |
227 | /* Mark if nexthop has changed. */ | |
228 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
229 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
230 | ||
231 | /* Unintern existing, set to new. */ | |
232 | bgp_attr_unintern(&pi->attr); | |
233 | pi->attr = attr_new; | |
234 | pi->uptime = bgp_clock(); | |
235 | } | |
236 | ||
237 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 238 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 239 | |
09319b4e | 240 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
241 | |
242 | return ret; | |
243 | } | |
244 | ||
245 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
246 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
247 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
248 | { | |
249 | int ret; | |
09319b4e | 250 | struct bgp_dest *dest; |
c44ab6f1 AK |
251 | struct bgp_path_info *pi; |
252 | ||
253 | if (!es->route_table) | |
254 | return 0; | |
255 | ||
256 | /* Locate route within the ESI. | |
257 | * NOTE: There is no RD here. | |
258 | */ | |
09319b4e DS |
259 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
260 | if (!dest) | |
c44ab6f1 AK |
261 | return 0; |
262 | ||
263 | /* Find matching route entry. */ | |
09319b4e | 264 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
265 | if (pi->extra |
266 | && (struct bgp_path_info *)pi->extra->parent == | |
267 | parent_pi) | |
268 | break; | |
269 | ||
270 | if (!pi) | |
271 | return 0; | |
272 | ||
273 | /* Mark entry for deletion */ | |
09319b4e | 274 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
275 | |
276 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 277 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
278 | |
279 | /* Unlock route node. */ | |
09319b4e | 280 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
281 | |
282 | return ret; | |
283 | } | |
284 | ||
285 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
286 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
287 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
288 | struct bgp_path_info *pi, int install) | |
289 | { | |
290 | int ret = 0; | |
291 | ||
292 | if (install) | |
293 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
294 | else | |
295 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
296 | ||
297 | if (ret) { | |
298 | flog_err( | |
299 | EC_BGP_EVPN_FAIL, | |
300 | "%u: Failed to %s EVPN %s route in ESI %s", | |
301 | bgp->vrf_id, | |
302 | install ? "install" : "uninstall", | |
303 | "ES", es->esi_str); | |
304 | return ret; | |
305 | } | |
306 | return 0; | |
307 | } | |
308 | ||
309 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
310 | * Also remove all remote routes from the per ES table. Invoked when ES | |
311 | * is deleted. | |
185fb14a | 312 | */ |
c44ab6f1 AK |
313 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
314 | { | |
09319b4e | 315 | struct bgp_dest *dest; |
c44ab6f1 AK |
316 | struct bgp_path_info *pi, *nextpi; |
317 | ||
318 | /* de-activate the ES */ | |
319 | bgp_evpn_local_es_down(bgp, es); | |
320 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
321 | ||
322 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
323 | for (dest = bgp_table_top(es->route_table); dest; |
324 | dest = bgp_route_next(dest)) { | |
325 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
326 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
327 | bgp_path_info_delete(dest, pi); | |
328 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
329 | } |
330 | } | |
331 | } | |
332 | ||
333 | /***************************************************************************** | |
334 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
335 | * segment updates. | |
336 | */ | |
337 | ||
338 | /* create or update local EVPN type1/type4 route entry. | |
339 | * | |
340 | * This could be in - | |
341 | * the ES table if ESR/EAD-ES (or) | |
342 | * the VNI table if EAD-EVI (or) | |
343 | * the global table if ESR/EAD-ES/EAD-EVI | |
344 | * | |
345 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
346 | * ESR). | |
347 | */ | |
09319b4e DS |
348 | static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
349 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
350 | struct bgp_dest *dest, struct attr *attr, | |
351 | int add, struct bgp_path_info **ri, | |
352 | int *route_changed) | |
185fb14a | 353 | { |
185fb14a AK |
354 | struct bgp_path_info *tmp_pi = NULL; |
355 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
356 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
357 | struct attr *attr_new = NULL; | |
c44ab6f1 | 358 | struct prefix_evpn *evp; |
185fb14a AK |
359 | |
360 | *ri = NULL; | |
752eed47 | 361 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 362 | *route_changed = 1; |
185fb14a AK |
363 | |
364 | /* locate the local and remote entries if any */ | |
09319b4e | 365 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
366 | tmp_pi = tmp_pi->next) { |
367 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
368 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
369 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
370 | local_pi = tmp_pi; |
371 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
372 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
373 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
374 | remote_pi = tmp_pi; |
375 | } | |
376 | ||
c44ab6f1 AK |
377 | /* we don't expect to see a remote_ri at this point as |
378 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
379 | * in the VNI-rt-table. | |
185fb14a AK |
380 | */ |
381 | if (remote_pi) { | |
382 | flog_err( | |
23d0a753 DA |
383 | EC_BGP_ES_INVALID, |
384 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
385 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a AK |
386 | return -1; |
387 | } | |
388 | ||
389 | if (!local_pi && !add) | |
390 | return 0; | |
391 | ||
392 | /* create or update the entry */ | |
393 | if (!local_pi) { | |
394 | ||
395 | /* Add or update attribute to hash */ | |
396 | attr_new = bgp_attr_intern(attr); | |
397 | ||
398 | /* Create new route with its attribute. */ | |
399 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 400 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
401 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
402 | ||
c44ab6f1 AK |
403 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
404 | bgp_path_info_extra_get(tmp_pi); | |
405 | tmp_pi->extra->num_labels = 1; | |
406 | if (vpn) | |
407 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
408 | else | |
409 | tmp_pi->extra->label[0] = 0; | |
410 | } | |
411 | ||
185fb14a | 412 | /* add the newly created path to the route-node */ |
09319b4e | 413 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
414 | } else { |
415 | tmp_pi = local_pi; | |
416 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 417 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
418 | *route_changed = 0; |
419 | else { | |
420 | /* The attribute has changed. | |
421 | * Add (or update) attribute to hash. | |
422 | */ | |
423 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
424 | bgp_path_info_set_flag(dest, tmp_pi, |
425 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
426 | |
427 | /* Restore route, if needed. */ | |
428 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 429 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
430 | |
431 | /* Unintern existing, set to new. */ | |
432 | bgp_attr_unintern(&tmp_pi->attr); | |
433 | tmp_pi->attr = attr_new; | |
434 | tmp_pi->uptime = bgp_clock(); | |
435 | } | |
436 | } | |
437 | ||
c44ab6f1 AK |
438 | if (*route_changed) { |
439 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
440 | zlog_debug( |
441 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
442 | es->esi_str, vpn ? vpn->vni : 0, | |
443 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
444 | ? "esr" | |
445 | : (vpn ? "ead-evi" : "ead-es"), | |
446 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
447 | } |
448 | ||
185fb14a AK |
449 | /* Return back the route entry. */ |
450 | *ri = tmp_pi; | |
451 | return 0; | |
452 | } | |
453 | ||
c44ab6f1 AK |
454 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
455 | * | |
456 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
457 | * ESR). | |
458 | */ | |
459 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
460 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 461 | { |
185fb14a AK |
462 | afi_t afi = AFI_L2VPN; |
463 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 464 | struct bgp_path_info *pi; |
09319b4e DS |
465 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
466 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
467 | struct bgp_table *rt_table; |
468 | struct prefix_rd *prd; | |
185fb14a | 469 | |
c44ab6f1 AK |
470 | if (vpn) { |
471 | rt_table = vpn->route_table; | |
472 | prd = &vpn->prd; | |
473 | } else { | |
474 | rt_table = es->route_table; | |
475 | prd = &es->prd; | |
476 | } | |
185fb14a | 477 | |
c44ab6f1 AK |
478 | /* First, locate the route node within the ESI or VNI. |
479 | * If it doesn't exist, ther is nothing to do. | |
480 | * Note: there is no RD here. | |
481 | */ | |
09319b4e DS |
482 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
483 | if (!dest) | |
c44ab6f1 | 484 | return 0; |
185fb14a | 485 | |
c44ab6f1 | 486 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
487 | zlog_debug( |
488 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
489 | es->esi_str, vpn ? vpn->vni : 0, | |
490 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
491 | ? "esr" | |
492 | : (vpn ? "ead-evi" : "ead-es"), | |
493 | &es->originator_ip); | |
185fb14a | 494 | |
c44ab6f1 AK |
495 | /* Next, locate route node in the global EVPN routing table. |
496 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
497 | */ | |
09319b4e DS |
498 | global_dest = |
499 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
500 | (const struct prefix_evpn *)p, prd); | |
501 | if (global_dest) { | |
185fb14a | 502 | |
c44ab6f1 | 503 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 504 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
505 | |
506 | /* Schedule for processing - withdraws to peers happen from | |
507 | * this table. | |
508 | */ | |
509 | if (pi) | |
09319b4e DS |
510 | bgp_process(bgp, global_dest, afi, safi); |
511 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
512 | } |
513 | ||
514 | /* | |
c44ab6f1 | 515 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
516 | * This can just be removed. |
517 | */ | |
09319b4e | 518 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 519 | if (pi) |
09319b4e DS |
520 | bgp_path_info_reap(dest, pi); |
521 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
522 | return 0; |
523 | } | |
524 | ||
c44ab6f1 AK |
525 | /***************************************************************************** |
526 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
527 | * ESRs are used for DF election. Currently service-carving described in |
528 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
529 | * used by default. | |
530 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 531 | */ |
c44ab6f1 AK |
532 | /* Build extended community for EVPN ES (type-4) route */ |
533 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
534 | struct attr *attr) | |
185fb14a | 535 | { |
c44ab6f1 AK |
536 | struct ecommunity ecom_encap; |
537 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 538 | struct ecommunity ecom_df; |
c44ab6f1 AK |
539 | struct ecommunity_val eval; |
540 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 541 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
542 | bgp_encap_types tnl_type; |
543 | struct ethaddr mac; | |
185fb14a | 544 | |
c44ab6f1 AK |
545 | /* Encap */ |
546 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
547 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
548 | encode_encap_extcomm(tnl_type, &eval); | |
549 | ecom_encap.size = 1; | |
34540b0d | 550 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
551 | ecom_encap.val = (uint8_t *)eval.val; |
552 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 553 | |
c44ab6f1 AK |
554 | /* ES import RT */ |
555 | memset(&mac, 0, sizeof(struct ethaddr)); | |
556 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
557 | es_get_system_mac(&es->esi, &mac); | |
558 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
559 | ecom_es_rt.size = 1; | |
34540b0d | 560 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
561 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
562 | attr->ecommunity = | |
563 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 564 | |
74e2bd89 AK |
565 | /* DF election extended community */ |
566 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
567 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
568 | ecom_df.size = 1; | |
569 | ecom_df.val = (uint8_t *)eval_df.val; | |
570 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
571 | ||
c44ab6f1 | 572 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
573 | } |
574 | ||
c44ab6f1 AK |
575 | /* Create or update local type-4 route */ |
576 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
577 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
578 | { |
579 | int ret = 0; | |
c44ab6f1 AK |
580 | int route_changed = 0; |
581 | afi_t afi = AFI_L2VPN; | |
582 | safi_t safi = SAFI_EVPN; | |
583 | struct attr attr; | |
584 | struct attr *attr_new = NULL; | |
09319b4e | 585 | struct bgp_dest *dest = NULL; |
185fb14a | 586 | struct bgp_path_info *pi = NULL; |
185fb14a | 587 | |
c44ab6f1 AK |
588 | memset(&attr, 0, sizeof(struct attr)); |
589 | ||
590 | /* Build path-attribute for this route. */ | |
591 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
592 | attr.nexthop = es->originator_ip; | |
593 | attr.mp_nexthop_global_in = es->originator_ip; | |
594 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
595 | ||
596 | /* Set up extended community. */ | |
597 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
598 | ||
599 | /* First, create (or fetch) route node within the ESI. */ | |
600 | /* NOTE: There is no RD here. */ | |
09319b4e | 601 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 602 | |
c44ab6f1 | 603 | /* Create or update route entry. */ |
09319b4e DS |
604 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
605 | &pi, &route_changed); | |
ec779825 | 606 | if (ret != 0) |
23d0a753 DA |
607 | flog_err( |
608 | EC_BGP_ES_INVALID, | |
609 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
610 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 611 | |
c44ab6f1 AK |
612 | assert(pi); |
613 | attr_new = pi->attr; | |
185fb14a | 614 | |
c44ab6f1 AK |
615 | /* Perform route selection; |
616 | * this is just to set the flags correctly | |
617 | * as local route in the ES always wins. | |
618 | */ | |
09319b4e DS |
619 | bgp_evpn_es_route_select_install(bgp, es, dest); |
620 | bgp_dest_unlock_node(dest); | |
185fb14a | 621 | |
c44ab6f1 AK |
622 | /* If this is a new route or some attribute has changed, export the |
623 | * route to the global table. The route will be advertised to peers | |
624 | * from there. Note that this table is a 2-level tree (RD-level + | |
625 | * Prefix-level) similar to L3VPN routes. | |
626 | */ | |
627 | if (route_changed) { | |
628 | struct bgp_path_info *global_pi; | |
185fb14a | 629 | |
09319b4e DS |
630 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
631 | p, &es->prd); | |
632 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
633 | attr_new, 1, &global_pi, | |
634 | &route_changed); | |
185fb14a | 635 | |
c44ab6f1 | 636 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
637 | bgp_process(bgp, dest, afi, safi); |
638 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
639 | } |
640 | ||
c44ab6f1 AK |
641 | /* Unintern temporary. */ |
642 | aspath_unintern(&attr.aspath); | |
643 | return 0; | |
185fb14a AK |
644 | } |
645 | ||
c44ab6f1 AK |
646 | /* Delete local type-4 route */ |
647 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
648 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 649 | { |
c44ab6f1 AK |
650 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
651 | } | |
185fb14a | 652 | |
c44ab6f1 AK |
653 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
654 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
655 | struct attr *attr, uint8_t *pfx, int psize, | |
656 | uint32_t addpath_id) | |
657 | { | |
658 | int ret; | |
659 | esi_t esi; | |
660 | uint8_t ipaddr_len; | |
661 | struct in_addr vtep_ip; | |
662 | struct prefix_rd prd; | |
663 | struct prefix_evpn p; | |
185fb14a | 664 | |
c44ab6f1 AK |
665 | /* Type-4 route should be either 23 or 35 bytes |
666 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 667 | */ |
c44ab6f1 AK |
668 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
669 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
670 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
671 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
672 | peer->bgp->vrf_id, peer->host, psize); | |
673 | return -1; | |
674 | } | |
185fb14a | 675 | |
c44ab6f1 AK |
676 | /* Make prefix_rd */ |
677 | prd.family = AF_UNSPEC; | |
678 | prd.prefixlen = 64; | |
679 | memcpy(&prd.val, pfx, RD_BYTES); | |
680 | pfx += RD_BYTES; | |
185fb14a | 681 | |
c44ab6f1 AK |
682 | /* get the ESI */ |
683 | memcpy(&esi, pfx, ESI_BYTES); | |
684 | pfx += ESI_BYTES; | |
185fb14a | 685 | |
185fb14a | 686 | |
c44ab6f1 AK |
687 | /* Get the IP. */ |
688 | ipaddr_len = *pfx++; | |
689 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
690 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
691 | } else { | |
692 | flog_err( | |
693 | EC_BGP_EVPN_ROUTE_INVALID, | |
694 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
695 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
696 | return -1; | |
697 | } | |
185fb14a | 698 | |
c44ab6f1 AK |
699 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
700 | /* Process the route. */ | |
701 | if (attr) { | |
702 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
703 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
704 | &prd, NULL, 0, 0, NULL); | |
705 | } else { | |
706 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
707 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
708 | &prd, NULL, 0, NULL); | |
709 | } | |
185fb14a AK |
710 | return ret; |
711 | } | |
712 | ||
c44ab6f1 AK |
713 | /* Check if a prefix belongs to the local ES */ |
714 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
715 | struct bgp_evpn_es *es) | |
185fb14a | 716 | { |
c44ab6f1 AK |
717 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
718 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
719 | } |
720 | ||
c44ab6f1 AK |
721 | /* Import remote ESRs on local ethernet segment add */ |
722 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
723 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
724 | { |
725 | int ret; | |
726 | afi_t afi; | |
727 | safi_t safi; | |
09319b4e | 728 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
729 | struct bgp_table *table; |
730 | struct bgp_path_info *pi; | |
731 | ||
732 | afi = AFI_L2VPN; | |
733 | safi = SAFI_EVPN; | |
734 | ||
c44ab6f1 AK |
735 | /* Walk entire global routing table and evaluate routes which could be |
736 | * imported into this Ethernet Segment. | |
185fb14a | 737 | */ |
09319b4e DS |
738 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
739 | rd_dest = bgp_route_next(rd_dest)) { | |
740 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
741 | if (!table) |
742 | continue; | |
743 | ||
09319b4e DS |
744 | for (dest = bgp_table_top(table); dest; |
745 | dest = bgp_route_next(dest)) { | |
746 | struct prefix_evpn *evp = | |
752eed47 | 747 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 748 | |
09319b4e DS |
749 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
750 | pi = pi->next) { | |
185fb14a AK |
751 | /* |
752 | * Consider "valid" remote routes applicable for | |
753 | * this ES. | |
754 | */ | |
755 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
756 | && pi->type == ZEBRA_ROUTE_BGP |
757 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
758 | continue; |
759 | ||
c44ab6f1 | 760 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
761 | continue; |
762 | ||
763 | if (install) | |
c44ab6f1 AK |
764 | ret = bgp_evpn_es_route_install( |
765 | bgp, es, evp, pi); | |
185fb14a | 766 | else |
c44ab6f1 AK |
767 | ret = bgp_evpn_es_route_uninstall( |
768 | bgp, es, evp, pi); | |
185fb14a AK |
769 | |
770 | if (ret) { | |
771 | flog_err( | |
2dbe669b DA |
772 | EC_BGP_EVPN_FAIL, |
773 | "Failed to %s EVPN %pFX route in ESI %s", | |
774 | install ? "install" | |
185fb14a | 775 | : "uninstall", |
2dbe669b | 776 | evp, es->esi_str); |
dc52bece DS |
777 | |
778 | bgp_dest_unlock_node(rd_dest); | |
779 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
780 | return ret; |
781 | } | |
782 | } | |
783 | } | |
784 | } | |
785 | return 0; | |
786 | } | |
787 | ||
c44ab6f1 AK |
788 | /***************************************************************************** |
789 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
790 | * There are two types of EAD routes - | |
791 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
792 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 793 | */ |
185fb14a | 794 | |
c44ab6f1 AK |
795 | /* Extended communities associated with EAD-per-ES */ |
796 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
797 | struct attr *attr) | |
185fb14a | 798 | { |
c44ab6f1 AK |
799 | struct ecommunity ecom_encap; |
800 | struct ecommunity ecom_esi_label; | |
801 | struct ecommunity_val eval; | |
802 | struct ecommunity_val eval_esi_label; | |
803 | bgp_encap_types tnl_type; | |
804 | struct listnode *evi_node, *rt_node; | |
805 | struct ecommunity *ecom; | |
806 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 807 | |
c44ab6f1 AK |
808 | /* Encap */ |
809 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
810 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
811 | encode_encap_extcomm(tnl_type, &eval); | |
812 | ecom_encap.size = 1; | |
34540b0d | 813 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
814 | ecom_encap.val = (uint8_t *)eval.val; |
815 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 816 | |
c44ab6f1 AK |
817 | /* ESI label */ |
818 | encode_esi_label_extcomm(&eval_esi_label, | |
819 | false /*single_active*/); | |
820 | ecom_esi_label.size = 1; | |
34540b0d | 821 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
822 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
823 | attr->ecommunity = | |
824 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
825 | ||
826 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
827 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
828 | * with it. | |
829 | */ | |
830 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
831 | evi_node, es_evi)) { | |
832 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
833 | continue; | |
834 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
835 | rt_node, ecom)) | |
836 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
837 | ecom); | |
838 | } | |
839 | ||
840 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
841 | } | |
842 | ||
843 | /* Extended communities associated with EAD-per-EVI */ | |
844 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
845 | struct bgpevpn *vpn, struct attr *attr) | |
846 | { | |
847 | struct ecommunity ecom_encap; | |
848 | struct ecommunity_val eval; | |
849 | bgp_encap_types tnl_type; | |
850 | struct listnode *rt_node; | |
851 | struct ecommunity *ecom; | |
852 | ||
853 | /* Encap */ | |
854 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
855 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
856 | encode_encap_extcomm(tnl_type, &eval); | |
857 | ecom_encap.size = 1; | |
7659ad68 | 858 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
859 | ecom_encap.val = (uint8_t *)eval.val; |
860 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
861 | ||
862 | /* Add export RTs for the L2-VNI */ | |
863 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
864 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
865 | ||
866 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
867 | } | |
868 | ||
869 | /* Update EVPN EAD (type-1) route - | |
870 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
871 | */ | |
872 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
873 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
874 | struct prefix_evpn *p) | |
875 | { | |
876 | int ret = 0; | |
877 | afi_t afi = AFI_L2VPN; | |
878 | safi_t safi = SAFI_EVPN; | |
879 | struct attr attr; | |
880 | struct attr *attr_new = NULL; | |
09319b4e | 881 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
882 | struct bgp_path_info *pi = NULL; |
883 | int route_changed = 0; | |
884 | struct prefix_rd *global_rd; | |
885 | ||
886 | memset(&attr, 0, sizeof(struct attr)); | |
887 | ||
888 | /* Build path-attribute for this route. */ | |
889 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
890 | attr.nexthop = es->originator_ip; | |
891 | attr.mp_nexthop_global_in = es->originator_ip; | |
892 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
893 | ||
894 | if (vpn) { | |
895 | /* EAD-EVI route update */ | |
896 | /* MPLS label */ | |
897 | vni2label(vpn->vni, &(attr.label)); | |
898 | ||
899 | /* Set up extended community */ | |
900 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
901 | ||
902 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 903 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
904 | |
905 | /* Create or update route entry. */ | |
09319b4e DS |
906 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
907 | &attr, 1, &pi, &route_changed); | |
ec779825 | 908 | if (ret != 0) |
23d0a753 DA |
909 | flog_err( |
910 | EC_BGP_ES_INVALID, | |
911 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
912 | bgp->vrf_id, es->esi_str, vpn->vni, | |
913 | &es->originator_ip); | |
c44ab6f1 AK |
914 | global_rd = &vpn->prd; |
915 | } else { | |
916 | /* EAD-ES route update */ | |
917 | /* MPLS label is 0 for EAD-ES route */ | |
918 | ||
919 | /* Set up extended community */ | |
920 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
921 | ||
922 | /* First, create (or fetch) route node within the ES. */ | |
923 | /* NOTE: There is no RD here. */ | |
924 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 925 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
926 | |
927 | /* Create or update route entry. */ | |
09319b4e DS |
928 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
929 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 930 | if (ret != 0) { |
23d0a753 DA |
931 | flog_err( |
932 | EC_BGP_ES_INVALID, | |
933 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
934 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
935 | } |
936 | global_rd = &es->prd; | |
937 | } | |
938 | ||
939 | ||
940 | assert(pi); | |
941 | attr_new = pi->attr; | |
942 | ||
943 | /* Perform route selection; | |
944 | * this is just to set the flags correctly as local route in | |
945 | * the ES always wins. | |
946 | */ | |
09319b4e DS |
947 | evpn_route_select_install(bgp, vpn, dest); |
948 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
949 | |
950 | /* If this is a new route or some attribute has changed, export the | |
951 | * route to the global table. The route will be advertised to peers | |
952 | * from there. Note that this table is a 2-level tree (RD-level + | |
953 | * Prefix-level) similar to L3VPN routes. | |
954 | */ | |
955 | if (route_changed) { | |
956 | struct bgp_path_info *global_pi; | |
957 | ||
09319b4e DS |
958 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
959 | p, global_rd); | |
960 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
961 | attr_new, 1, &global_pi, | |
962 | &route_changed); | |
c44ab6f1 AK |
963 | |
964 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
965 | bgp_process(bgp, dest, afi, safi); |
966 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
967 | } |
968 | ||
969 | /* Unintern temporary. */ | |
970 | aspath_unintern(&attr.aspath); | |
971 | return 0; | |
972 | } | |
973 | ||
9c49ac74 AD |
974 | /* |
975 | * This function is called when the export RT for a VNI changes. | |
976 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
977 | * table and advertise these routes to peers. | |
978 | */ | |
979 | ||
980 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
981 | { | |
982 | struct prefix_evpn p; | |
983 | struct bgp_evpn_es *es; | |
984 | struct bgp_evpn_es_evi *es_evi; | |
985 | struct bgp_evpn_es_evi *es_evi_next; | |
986 | ||
987 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
988 | &vpn->es_evi_rb_tree, es_evi_next) { | |
989 | es = es_evi->es; | |
990 | ||
991 | /* Update EAD-ES */ | |
992 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
993 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
994 | &es->esi, es->originator_ip); | |
995 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
996 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
997 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
998 | bgp->vrf_id, es->esi_str, | |
999 | es_evi->vpn->vni); | |
1000 | } | |
1001 | ||
1002 | /* Update EAD-EVI */ | |
1003 | if (CHECK_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 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1007 | &p)) | |
1008 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1009 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1010 | bgp->vrf_id, es->esi_str, | |
1011 | es_evi->vpn->vni); | |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | ||
c44ab6f1 AK |
1016 | /* Delete local Type-1 route */ |
1017 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1018 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1019 | { | |
1020 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1021 | } | |
1022 | ||
1023 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1024 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1025 | struct prefix_evpn *p) | |
1026 | { | |
1027 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1028 | } | |
1029 | ||
1030 | /* Generate EAD-EVI for all VNIs */ | |
1031 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1032 | struct bgp_evpn_es *es) | |
1033 | { | |
1034 | struct listnode *evi_node; | |
1035 | struct prefix_evpn p; | |
1036 | struct bgp_evpn_es_evi *es_evi; | |
1037 | ||
fe8293c3 AK |
1038 | /* EAD-per-EVI routes have been suppressed */ |
1039 | if (!bgp_mh_info->ead_evi_tx) | |
1040 | return; | |
1041 | ||
c44ab6f1 AK |
1042 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1043 | /* EAD-EVI route add for this ES is already done */ | |
1044 | return; | |
1045 | ||
1046 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1047 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1048 | &es->esi, es->originator_ip); | |
1049 | ||
1050 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1051 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1052 | continue; | |
1053 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1054 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1055 | "%u: Type4 route creation failure for ESI %s", | |
1056 | bgp->vrf_id, es->esi_str); | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * Withdraw EAD-EVI for all VNIs | |
1062 | */ | |
1063 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1064 | struct bgp_evpn_es *es) | |
1065 | { | |
1066 | struct listnode *evi_node; | |
1067 | struct prefix_evpn p; | |
1068 | struct bgp_evpn_es_evi *es_evi; | |
1069 | ||
1070 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1071 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1072 | /* EAD-EVI route has not been advertised for this ES */ | |
1073 | return; | |
1074 | ||
1075 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1076 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1077 | &es->esi, es->originator_ip); | |
1078 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1079 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1080 | continue; | |
1081 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1082 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1083 | "%u: Type4 route creation failure for ESI %s", | |
1084 | bgp->vrf_id, es->esi_str); | |
1085 | } | |
1086 | } | |
185fb14a AK |
1087 | |
1088 | /* | |
c44ab6f1 | 1089 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1090 | */ |
c44ab6f1 AK |
1091 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1092 | struct attr *attr, uint8_t *pfx, int psize, | |
1093 | uint32_t addpath_id) | |
185fb14a AK |
1094 | { |
1095 | int ret; | |
c44ab6f1 | 1096 | struct prefix_rd prd; |
185fb14a | 1097 | esi_t esi; |
c44ab6f1 AK |
1098 | uint32_t eth_tag; |
1099 | mpls_label_t label; | |
185fb14a | 1100 | struct in_addr vtep_ip; |
185fb14a AK |
1101 | struct prefix_evpn p; |
1102 | ||
c44ab6f1 | 1103 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1104 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1105 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1106 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1107 | return -1; |
1108 | } | |
1109 | ||
1110 | /* Make prefix_rd */ | |
1111 | prd.family = AF_UNSPEC; | |
1112 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1113 | memcpy(&prd.val, pfx, RD_BYTES); |
1114 | pfx += RD_BYTES; | |
185fb14a AK |
1115 | |
1116 | /* get the ESI */ | |
1117 | memcpy(&esi, pfx, ESI_BYTES); | |
1118 | pfx += ESI_BYTES; | |
1119 | ||
c44ab6f1 AK |
1120 | /* Copy Ethernet Tag */ |
1121 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1122 | eth_tag = ntohl(eth_tag); | |
1123 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1124 | |
c44ab6f1 | 1125 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1126 | |
c44ab6f1 AK |
1127 | /* EAD route prefix doesn't include the nexthop in the global |
1128 | * table | |
1129 | */ | |
3a6290bd | 1130 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1131 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1132 | /* Process the route. */ |
1133 | if (attr) { | |
1134 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1135 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1136 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1137 | } else { |
1138 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1139 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1140 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1141 | } |
1142 | return ret; | |
1143 | } | |
1144 | ||
c44ab6f1 AK |
1145 | /*****************************************************************************/ |
1146 | /* Ethernet Segment Management | |
1147 | * 1. Ethernet Segment is a collection of links attached to the same | |
1148 | * server (MHD) or switch (MHN) | |
1149 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1150 | * 10-byte ES-ID. | |
1151 | * 3. Local ESs are configured in zebra and sent to BGP | |
1152 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1153 | * created on first reference and release on last de-reference | |
1154 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1155 | * to have an ES peer. | |
1156 | */ | |
1157 | ||
1158 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1159 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1160 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1161 | * have been imported into one or more VNIs | |
185fb14a | 1162 | */ |
c44ab6f1 AK |
1163 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1164 | { | |
1165 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1166 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1167 | ||
1168 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1169 | } | |
1170 | ||
1171 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1172 | struct in_addr vtep_ip) | |
1173 | { | |
1174 | struct bgp_evpn_es_vtep *es_vtep; | |
1175 | ||
1176 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1177 | ||
1178 | es_vtep->es = es; | |
1179 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1180 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1181 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1182 | ||
1183 | return es_vtep; | |
1184 | } | |
1185 | ||
1186 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1187 | { | |
1188 | struct bgp_evpn_es *es = es_vtep->es; | |
1189 | ||
1190 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1191 | es_vtep->evi_cnt) | |
1192 | /* as long as there is some reference we can't free it */ | |
1193 | return; | |
1194 | ||
1195 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1196 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1197 | } | |
1198 | ||
1199 | /* check if VTEP is already part of the list */ | |
1200 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1201 | struct in_addr vtep_ip) | |
1202 | { | |
1203 | struct listnode *node = NULL; | |
1204 | struct bgp_evpn_es_vtep *es_vtep; | |
1205 | ||
1206 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1207 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1208 | return es_vtep; | |
1209 | } | |
1210 | return NULL; | |
1211 | } | |
1212 | ||
1213 | /* Send the remote ES to zebra for NHG programming */ | |
1214 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1215 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1216 | { | |
1217 | struct bgp_evpn_es *es = es_vtep->es; | |
1218 | struct stream *s; | |
74e2bd89 | 1219 | uint32_t flags = 0; |
c44ab6f1 AK |
1220 | |
1221 | /* Check socket. */ | |
1222 | if (!zclient || zclient->sock < 0) | |
1223 | return 0; | |
1224 | ||
1225 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1226 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1227 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1228 | zlog_debug("No zebra instance, not installing remote es %s", | |
1229 | es->esi_str); | |
1230 | return 0; | |
1231 | } | |
1232 | ||
74e2bd89 AK |
1233 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1234 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1235 | ||
c44ab6f1 AK |
1236 | s = zclient->obuf; |
1237 | stream_reset(s); | |
1238 | ||
1239 | zclient_create_header(s, | |
1240 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1241 | bgp->vrf_id); | |
1242 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1243 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1244 | if (add) { |
1245 | stream_putl(s, flags); | |
1246 | stream_putc(s, es_vtep->df_alg); | |
1247 | stream_putw(s, es_vtep->df_pref); | |
1248 | } | |
c44ab6f1 AK |
1249 | |
1250 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1251 | ||
1252 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1253 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1254 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1255 | |
1256 | return zclient_send_message(zclient); | |
1257 | } | |
1258 | ||
1259 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1260 | struct bgp_evpn_es_vtep *es_vtep, |
1261 | bool param_change) | |
c44ab6f1 AK |
1262 | { |
1263 | bool old_active; | |
1264 | bool new_active; | |
1265 | ||
1266 | old_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1267 | /* currently we need an active EVI reference to use the VTEP as | |
1268 | * a nexthop. this may change... | |
1269 | */ | |
1270 | if (es_vtep->evi_cnt) | |
1271 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1272 | else | |
1273 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1274 | ||
1275 | new_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1276 | ||
74e2bd89 | 1277 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1278 | |
74e2bd89 AK |
1279 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1280 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1281 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1282 | new_active ? "active" : "inactive", | |
1283 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1284 | |
74e2bd89 AK |
1285 | /* send remote ES to zebra */ |
1286 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1287 | |
8bcb09a1 AK |
1288 | /* The NHG is updated first for efficient failover handling. |
1289 | * Note the NHG can be de-activated while there are bgp | |
1290 | * routes referencing it. Zebra is capable of handling that | |
1291 | * elegantly by holding the NHG till all routes using it are | |
1292 | * removed. | |
26c03e43 | 1293 | */ |
8bcb09a1 | 1294 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1295 | /* queue up the es for background consistency checks */ |
1296 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1297 | } | |
c44ab6f1 AK |
1298 | } |
1299 | ||
1300 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1301 | struct bgp_evpn_es *es, |
1302 | struct in_addr vtep_ip, | |
1303 | bool esr, uint8_t df_alg, | |
1304 | uint16_t df_pref) | |
c44ab6f1 AK |
1305 | { |
1306 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1307 | bool param_change = false; |
c44ab6f1 AK |
1308 | |
1309 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1310 | ||
1311 | if (!es_vtep) | |
1312 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1313 | ||
1314 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1315 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1316 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1317 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1318 | |
74e2bd89 | 1319 | if (esr) { |
c44ab6f1 | 1320 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1321 | if ((es_vtep->df_pref != df_pref) |
1322 | || (es_vtep->df_alg != df_alg)) { | |
1323 | param_change = true; | |
1324 | es_vtep->df_pref = df_pref; | |
1325 | es_vtep->df_alg = df_alg; | |
1326 | } | |
1327 | } else { | |
c44ab6f1 | 1328 | ++es_vtep->evi_cnt; |
74e2bd89 | 1329 | } |
c44ab6f1 | 1330 | |
74e2bd89 | 1331 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1332 | |
1333 | return es_vtep; | |
1334 | } | |
1335 | ||
1336 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1337 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1338 | { | |
74e2bd89 AK |
1339 | bool param_change = false; |
1340 | ||
c44ab6f1 | 1341 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1342 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1343 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1344 | if (esr) { |
1345 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1346 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1347 | param_change = true; | |
1348 | es_vtep->df_pref = 0; | |
1349 | es_vtep->df_alg = 0; | |
1350 | } | |
c44ab6f1 AK |
1351 | } else { |
1352 | if (es_vtep->evi_cnt) | |
1353 | --es_vtep->evi_cnt; | |
1354 | } | |
1355 | ||
74e2bd89 | 1356 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1357 | bgp_evpn_es_vtep_free(es_vtep); |
1358 | } | |
1359 | ||
1360 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1361 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1362 | { | |
1363 | struct bgp_evpn_es_vtep *es_vtep; | |
1364 | ||
1365 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1366 | if (es_vtep) | |
1367 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1368 | } | |
1369 | ||
26c03e43 | 1370 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1371 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1372 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1373 | * state changes. | |
1374 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1375 | * the detination for efficient updates on - | |
1376 | * a. VTEP add/del - this results in a L3NHG update. | |
1377 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1378 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1379 | ****************************************************************************/ |
60605cbc | 1380 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1381 | { |
1382 | bgp_evpn_path_es_unlink(es_info); | |
1383 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1384 | } | |
1385 | ||
60605cbc AK |
1386 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1387 | { | |
1388 | if (mh_info->es_info) | |
1389 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1390 | if (mh_info->nh_info) |
1391 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1392 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1393 | } | |
1394 | ||
26c03e43 AK |
1395 | static struct bgp_path_es_info * |
1396 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1397 | { | |
1398 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1399 | struct bgp_path_mh_info *mh_info; |
1400 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1401 | |
1402 | e = bgp_path_info_extra_get(pi); | |
1403 | ||
60605cbc AK |
1404 | /* If mh_info doesn't exist allocate it */ |
1405 | mh_info = e->mh_info; | |
1406 | if (!mh_info) | |
1407 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1408 | sizeof(struct bgp_path_mh_info)); | |
1409 | ||
26c03e43 | 1410 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1411 | es_info = mh_info->es_info; |
1412 | if (!es_info) { | |
1413 | mh_info->es_info = es_info = | |
1414 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1415 | sizeof(struct bgp_path_es_info)); | |
1416 | es_info->vni = vni; | |
1417 | es_info->pi = pi; | |
26c03e43 AK |
1418 | } |
1419 | ||
60605cbc | 1420 | return es_info; |
26c03e43 AK |
1421 | } |
1422 | ||
60605cbc | 1423 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1424 | { |
1425 | struct bgp_evpn_es *es = es_info->es; | |
1426 | struct bgp_path_info *pi; | |
26c03e43 AK |
1427 | |
1428 | if (!es) | |
1429 | return; | |
1430 | ||
1431 | pi = es_info->pi; | |
1432 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1433 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1434 | &pi->net->p, es->esi_str); | |
26c03e43 | 1435 | |
58bff4d1 AK |
1436 | if (es_info->vni) |
1437 | list_delete_node(es->macip_evi_path_list, | |
1438 | &es_info->es_listnode); | |
1439 | else | |
1440 | list_delete_node(es->macip_global_path_list, | |
1441 | &es_info->es_listnode); | |
26c03e43 AK |
1442 | es_info->es = NULL; |
1443 | ||
1444 | /* if there are no other references against the ES it | |
1445 | * needs to be freed | |
1446 | */ | |
1447 | bgp_evpn_es_free(es, __func__); | |
1448 | ||
1449 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1450 | * along with the path. | |
1451 | */ | |
1452 | } | |
1453 | ||
1454 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1455 | { | |
1456 | struct bgp_path_es_info *es_info; | |
1457 | struct bgp_evpn_es *es; | |
58bff4d1 AK |
1458 | struct bgp *bgp_evpn; |
1459 | struct prefix_evpn *evp; | |
26c03e43 | 1460 | |
60605cbc AK |
1461 | es_info = (pi->extra && pi->extra->mh_info) |
1462 | ? pi->extra->mh_info->es_info | |
1463 | : NULL; | |
26c03e43 AK |
1464 | /* if the esi is zero just unlink the path from the old es */ |
1465 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1466 | if (es_info) | |
1467 | bgp_evpn_path_es_unlink(es_info); | |
1468 | return; | |
1469 | } | |
1470 | ||
58bff4d1 | 1471 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1472 | if (!bgp_evpn) |
1473 | return; | |
1474 | ||
58bff4d1 AK |
1475 | /* Only MAC-IP routes need to be linked (MAC-only routes can be |
1476 | * skipped) as these lists are maintained for managing | |
1477 | * host routes in the tenant VRF | |
1478 | */ | |
1479 | evp = (struct prefix_evpn *)&pi->net->p; | |
1480 | if (!(is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp))) | |
1481 | return; | |
1482 | ||
26c03e43 AK |
1483 | /* setup es_info against the path if it doesn't aleady exist */ |
1484 | if (!es_info) | |
1485 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1486 | ||
1487 | /* find-create ES */ | |
1488 | es = bgp_evpn_es_find(esi); | |
1489 | if (!es) | |
f61fbf21 | 1490 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1491 | |
1492 | /* dup check */ | |
1493 | if (es_info->es == es) | |
1494 | return; | |
1495 | ||
1496 | /* unlink old ES if any */ | |
1497 | bgp_evpn_path_es_unlink(es_info); | |
1498 | ||
1499 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1500 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1501 | es->esi_str); | |
26c03e43 AK |
1502 | |
1503 | /* link mac-ip path to the new destination ES */ | |
1504 | es_info->es = es; | |
1505 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1506 | if (es_info->vni) |
1507 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1508 | else | |
1509 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1510 | } |
1511 | ||
58bff4d1 AK |
1512 | /* When a remote ES is added to a VRF, routes using that as |
1513 | * a destination need to be migrated to a L3NHG or viceversa. | |
1514 | * This is done indirectly by re-attempting an install of the | |
1515 | * route in the associated VRFs. As a part of the VRF install use | |
1516 | * of l3 NHG is evaluated and this results in the | |
1517 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1518 | */ |
1519 | static void | |
1520 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1521 | const char *reason) |
26c03e43 AK |
1522 | { |
1523 | struct listnode *node; | |
1524 | struct bgp_path_es_info *es_info; | |
1525 | struct bgp_path_info *pi; | |
58bff4d1 | 1526 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1527 | |
36dd4574 AK |
1528 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1529 | return; | |
1530 | ||
26c03e43 | 1531 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1532 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1533 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1534 | |
58bff4d1 | 1535 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1536 | pi = es_info->pi; |
26c03e43 AK |
1537 | |
1538 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2eef4f20 | 1539 | zlog_debug( |
58bff4d1 AK |
1540 | "update path %pFX linked to es %s on vrf chg", |
1541 | &pi->net->p, es->esi_str); | |
1542 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1543 | 1); | |
26c03e43 AK |
1544 | } |
1545 | } | |
1546 | ||
c44ab6f1 AK |
1547 | /* compare ES-IDs for the global ES RB tree */ |
1548 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1549 | const struct bgp_evpn_es *es2) | |
1550 | { | |
1551 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1552 | } | |
1553 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1554 | ||
1555 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1556 | { |
c44ab6f1 | 1557 | struct bgp_evpn_es tmp; |
185fb14a | 1558 | |
185fb14a | 1559 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1560 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1561 | } |
1562 | ||
c44ab6f1 | 1563 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1564 | { |
c44ab6f1 | 1565 | struct bgp_evpn_es *es; |
185fb14a AK |
1566 | |
1567 | if (!bgp) | |
1568 | return NULL; | |
1569 | ||
c44ab6f1 | 1570 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1571 | |
c44ab6f1 | 1572 | /* set the ESI */ |
185fb14a | 1573 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1574 | |
1575 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1576 | es->es_vtep_list = list_new(); |
1577 | listset_app_node_mem(es->es_vtep_list); | |
1578 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1579 | |
c44ab6f1 | 1580 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1581 | |
c44ab6f1 | 1582 | /* Initialize the ES routing table */ |
185fb14a AK |
1583 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1584 | ||
c44ab6f1 AK |
1585 | /* Add to rb_tree */ |
1586 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1587 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1588 | return NULL; | |
1589 | } | |
1590 | ||
c44ab6f1 AK |
1591 | /* Initialise the ES-EVI list */ |
1592 | es->es_evi_list = list_new(); | |
1593 | listset_app_node_mem(es->es_evi_list); | |
1594 | ||
c589d847 AK |
1595 | /* Initialise the ES-VRF list used for L3NHG management */ |
1596 | es->es_vrf_list = list_new(); | |
1597 | listset_app_node_mem(es->es_vrf_list); | |
1598 | ||
26c03e43 | 1599 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1600 | es->macip_evi_path_list = list_new(); |
1601 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1602 | es->macip_global_path_list = list_new(); |
1603 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1604 | |
c44ab6f1 AK |
1605 | QOBJ_REG(es, bgp_evpn_es); |
1606 | ||
185fb14a AK |
1607 | return es; |
1608 | } | |
1609 | ||
c44ab6f1 | 1610 | /* Free a given ES - |
185fb14a AK |
1611 | * This just frees appropriate memory, caller should have taken other |
1612 | * needed actions. | |
1613 | */ | |
45a859f1 | 1614 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1615 | { |
26c03e43 | 1616 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1617 | || listcount(es->macip_evi_path_list) |
1618 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1619 | return; |
1620 | ||
45a859f1 AK |
1621 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1622 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1623 | ||
c44ab6f1 AK |
1624 | /* cleanup resources maintained against the ES */ |
1625 | list_delete(&es->es_evi_list); | |
c589d847 | 1626 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1627 | list_delete(&es->es_vtep_list); |
d656e0ae | 1628 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1629 | list_delete(&es->macip_global_path_list); |
185fb14a | 1630 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1631 | |
1632 | /* remove the entry from various databases */ | |
1633 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1634 | bgp_evpn_es_cons_checks_pend_del(es); | |
1635 | ||
185fb14a AK |
1636 | QOBJ_UNREG(es); |
1637 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1638 | } | |
1639 | ||
c44ab6f1 AK |
1640 | /* init local info associated with the ES */ |
1641 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1642 | { |
c44ab6f1 | 1643 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
185fb14a | 1644 | |
c44ab6f1 AK |
1645 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1646 | return; | |
185fb14a | 1647 | |
c44ab6f1 AK |
1648 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
1649 | listnode_init(&es->es_listnode, es); | |
1650 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1651 | |
c44ab6f1 AK |
1652 | /* auto derive RD for this es */ |
1653 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1654 | es->prd.family = AF_UNSPEC; | |
1655 | es->prd.prefixlen = 64; | |
23d0a753 | 1656 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 AK |
1657 | (void)str2prefix_rd(buf, &es->prd); |
1658 | } | |
1659 | ||
1660 | /* clear any local info associated with the ES */ | |
1661 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es) | |
1662 | { | |
1663 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1664 | return; | |
185fb14a | 1665 | |
c44ab6f1 | 1666 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1667 | |
c44ab6f1 AK |
1668 | /* remove from the ES local list */ |
1669 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1670 | ||
1671 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1672 | ||
45a859f1 | 1673 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1674 | } |
1675 | ||
c44ab6f1 AK |
1676 | /* eval remote info associated with the ES */ |
1677 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1678 | { | |
1679 | if (es->remote_es_evi_cnt) { | |
1680 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1681 | } else { | |
1682 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1683 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1684 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1685 | } |
1686 | } | |
1687 | } | |
1688 | ||
70524092 AK |
1689 | /* If ES is present and local it needs to be active/oper-up for |
1690 | * including L3 EC | |
1691 | */ | |
1692 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1693 | { |
70524092 AK |
1694 | struct bgp_evpn_es *es; |
1695 | ||
1696 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1697 | return true; | |
1698 | ||
1699 | es = bgp_evpn_es_find(esi); | |
1700 | ||
1701 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1702 | || bgp_evpn_local_es_is_active(es)); | |
1703 | } | |
1704 | ||
d656e0ae AK |
1705 | /* Update all local MAC-IP routes in the VNI routing table associated |
1706 | * with the ES. When the ES is down the routes are advertised without | |
1707 | * the L3 extcomm | |
70524092 AK |
1708 | */ |
1709 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1710 | { | |
1711 | struct listnode *node; | |
1712 | struct bgp_path_es_info *es_info; | |
1713 | struct bgp_path_info *pi; | |
1714 | char prefix_buf[PREFIX_STRLEN]; | |
1715 | struct bgp *bgp; | |
1716 | struct bgpevpn *vpn; | |
1717 | ||
1718 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1719 | return; | |
1720 | ||
1721 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1722 | zlog_debug("update paths linked to es %s on oper chg", | |
1723 | es->esi_str); | |
1724 | ||
1725 | bgp = bgp_get_evpn(); | |
d656e0ae | 1726 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 AK |
1727 | pi = es_info->pi; |
1728 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
1729 | continue; | |
1730 | ||
1731 | if (pi->type != ZEBRA_ROUTE_BGP | |
1732 | || pi->sub_type != BGP_ROUTE_STATIC) | |
1733 | continue; | |
1734 | ||
1735 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1736 | if (!vpn) | |
1737 | continue; | |
1738 | ||
1739 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 AK |
1740 | zlog_debug( |
1741 | "update path %d %s linked to es %s on oper chg", | |
1742 | es_info->vni, | |
1743 | prefix2str(&pi->net->p, prefix_buf, | |
1744 | sizeof(prefix_buf)), | |
1745 | es->esi_str); | |
70524092 AK |
1746 | |
1747 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1748 | __func__); | |
1749 | } | |
74be8313 AK |
1750 | } |
1751 | ||
1752 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, | |
1753 | struct bgp_evpn_es *es) | |
185fb14a | 1754 | { |
185fb14a | 1755 | struct prefix_evpn p; |
c44ab6f1 | 1756 | int ret; |
185fb14a | 1757 | |
c44ab6f1 AK |
1758 | /* withdraw ESR */ |
1759 | /* Delete and withdraw locally learnt ES route */ | |
1760 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1761 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1762 | if (ret) { | |
1763 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1764 | "%u failed to delete type-4 route for ESI %s", | |
1765 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1766 | } |
1767 | ||
c44ab6f1 AK |
1768 | /* withdraw EAD-EVI */ |
1769 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1770 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1771 | |
c44ab6f1 AK |
1772 | /* withdraw EAD-ES */ |
1773 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1774 | &es->esi, es->originator_ip); | |
1775 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1776 | if (ret) { | |
1777 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1778 | "%u failed to delete type-1 route for ESI %s", | |
1779 | bgp->vrf_id, es->esi_str); | |
1780 | } | |
70524092 AK |
1781 | |
1782 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1783 | } |
1784 | ||
74be8313 AK |
1785 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1786 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1787 | { |
74be8313 | 1788 | bool old_active; |
c44ab6f1 | 1789 | |
74be8313 AK |
1790 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1791 | return; | |
c44ab6f1 | 1792 | |
74be8313 AK |
1793 | old_active = bgp_evpn_local_es_is_active(es); |
1794 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1795 | ||
1796 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1797 | zlog_debug("local es %s down", es->esi_str); | |
1798 | ||
1799 | if (old_active) | |
1800 | bgp_evpn_local_es_deactivate(bgp, es); | |
1801 | } | |
1802 | ||
1803 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1804 | bool regen_ead, bool regen_esr) | |
1805 | { | |
1806 | struct prefix_evpn p; | |
c44ab6f1 | 1807 | |
74e2bd89 AK |
1808 | if (regen_esr) { |
1809 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1810 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1811 | /* generate ESR */ | |
1812 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1813 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1814 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1815 | "%u: Type4 route creation failure for ESI %s", | |
1816 | bgp->vrf_id, es->esi_str); | |
1817 | } | |
c44ab6f1 | 1818 | |
74e2bd89 AK |
1819 | if (regen_ead) { |
1820 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1821 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1822 | /* generate EAD-EVI */ | |
1823 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1824 | |
74e2bd89 AK |
1825 | /* generate EAD-ES */ |
1826 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1827 | es->originator_ip); | |
d934e491 | 1828 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1829 | } |
70524092 AK |
1830 | |
1831 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1832 | } |
1833 | ||
74be8313 AK |
1834 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1835 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1836 | bool regen_esr) | |
1837 | { | |
1838 | bool regen_ead = false; | |
1839 | bool active = false; | |
1840 | ||
1841 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1842 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1843 | zlog_debug("local es %s up", es->esi_str); | |
1844 | ||
1845 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1846 | regen_esr = true; | |
1847 | regen_ead = true; | |
1848 | } | |
1849 | ||
1850 | active = bgp_evpn_local_es_is_active(es); | |
1851 | if (active && (regen_ead || regen_esr)) | |
1852 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
1853 | } | |
1854 | ||
1855 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
1856 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
1857 | * bypass state. | |
1858 | * PS: EAD-per-EVI will continue to be advertised | |
1859 | */ | |
1860 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
1861 | struct bgp_evpn_es *es, bool bypass) | |
1862 | { | |
1863 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
1864 | bool old_active; | |
1865 | bool new_active; | |
1866 | ||
1867 | if (bypass == old_bypass) | |
1868 | return; | |
1869 | ||
1870 | old_active = bgp_evpn_local_es_is_active(es); | |
1871 | if (bypass) | |
1872 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1873 | else | |
1874 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1875 | ||
1876 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1877 | zlog_debug("local es %s bypass %s", es->esi_str, | |
1878 | bypass ? "set" : "clear"); | |
1879 | ||
1880 | new_active = bgp_evpn_local_es_is_active(es); | |
1881 | if (old_active != new_active) { | |
1882 | if (new_active) | |
1883 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
1884 | else | |
1885 | bgp_evpn_local_es_deactivate(bgp, es); | |
1886 | } | |
1887 | } | |
1888 | ||
c44ab6f1 AK |
1889 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
1890 | { | |
1891 | struct bgp_evpn_es_evi *es_evi; | |
1892 | struct listnode *evi_node, *evi_next_node; | |
1893 | ||
1894 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1895 | zlog_debug("del local es %s", es->esi_str); | |
1896 | ||
1897 | /* Delete all local EVPN ES routes from ESI table | |
1898 | * and schedule for processing (to withdraw from peers)) | |
1899 | */ | |
1900 | bgp_evpn_es_route_del_all(bgp, es); | |
1901 | ||
1902 | /* release all local ES EVIs associated with the ES */ | |
1903 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
1904 | evi_next_node, es_evi)) { | |
1905 | bgp_evpn_local_es_evi_do_del(es_evi); | |
1906 | } | |
1907 | ||
1908 | /* Clear local info associated with the ES and free it up if there is | |
1909 | * no remote reference | |
1910 | */ | |
1911 | bgp_evpn_es_local_info_clear(es); | |
1912 | } | |
1913 | ||
7904e9fd AK |
1914 | bool bgp_evpn_is_esi_local(esi_t *esi) |
1915 | { | |
1916 | struct bgp_evpn_es *es = NULL; | |
1917 | ||
1918 | /* Lookup ESI hash - should exist. */ | |
1919 | es = bgp_evpn_es_find(esi); | |
1920 | return es ? !!(es->flags & BGP_EVPNES_LOCAL) : false; | |
1921 | } | |
1922 | ||
c44ab6f1 AK |
1923 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
1924 | { | |
1925 | struct bgp_evpn_es *es = NULL; | |
1926 | ||
1927 | /* Lookup ESI hash - should exist. */ | |
1928 | es = bgp_evpn_es_find(esi); | |
1929 | if (!es) { | |
1930 | flog_warn(EC_BGP_EVPN_ESI, | |
1931 | "%u: ES %s missing at local ES DEL", | |
1932 | bgp->vrf_id, es->esi_str); | |
1933 | return -1; | |
1934 | } | |
1935 | ||
1936 | bgp_evpn_local_es_do_del(bgp, es); | |
1937 | return 0; | |
1938 | } | |
1939 | ||
1940 | /* Handle device to ES id association. Results in the creation of a local | |
1941 | * ES. | |
1942 | */ | |
1943 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 1944 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 1945 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
1946 | { |
1947 | char buf[ESI_STR_LEN]; | |
1948 | struct bgp_evpn_es *es; | |
1949 | bool new_es = true; | |
74e2bd89 | 1950 | bool regen_esr = false; |
c44ab6f1 AK |
1951 | |
1952 | /* create the new es */ | |
1953 | es = bgp_evpn_es_find(esi); | |
1954 | if (es) { | |
1955 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
1956 | new_es = false; | |
1957 | } else { | |
1958 | es = bgp_evpn_es_new(bgp, esi); | |
1959 | if (!es) { | |
1960 | flog_err(EC_BGP_ES_CREATE, | |
1961 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
1962 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
1963 | return -1; | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
1968 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
1969 | es->esi_str, &originator_ip, df_pref, | |
1970 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
1971 | |
1972 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
1973 | if (df_pref != es->df_pref) { |
1974 | es->df_pref = df_pref; | |
1975 | regen_esr = true; | |
1976 | } | |
c44ab6f1 AK |
1977 | bgp_evpn_es_local_info_set(bgp, es); |
1978 | ||
1979 | /* import all remote Type-4 routes in the ES table */ | |
1980 | if (new_es) | |
1981 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
1982 | true /* install */); | |
1983 | ||
1984 | /* create and advertise EAD-EVI routes for the ES - | |
1985 | * XXX - till an ES-EVI reference is created there is really nothing to | |
1986 | * advertise | |
1987 | */ | |
1988 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
1989 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
1990 | ||
74be8313 AK |
1991 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
1992 | ||
c44ab6f1 AK |
1993 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
1994 | * can be generated even if the link is inactive. | |
1995 | */ | |
1996 | if (oper_up) | |
74e2bd89 | 1997 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
1998 | else |
1999 | bgp_evpn_local_es_down(bgp, es); | |
2000 | ||
2001 | return 0; | |
2002 | } | |
2003 | ||
9e0c2fd1 AK |
2004 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2005 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2006 | { |
2007 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2008 | struct listnode *node; | |
2009 | struct bgp_evpn_es_vtep *es_vtep; | |
2010 | bool first = true; | |
ec779825 | 2011 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2012 | |
2013 | vtep_str[0] = '\0'; | |
2014 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2015 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2016 | |
c44ab6f1 | 2017 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2018 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2019 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2020 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2021 | |
2022 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2023 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2024 | if (first) | |
c44ab6f1 | 2025 | first = false; |
9e0c2fd1 AK |
2026 | else |
2027 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2028 | strlcat(vtep_str, |
ec779825 AK |
2029 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2030 | sizeof(ip_buf)), | |
23d0a753 | 2031 | vtep_str_size); |
9e0c2fd1 AK |
2032 | strlcat(vtep_str, "(", vtep_str_size); |
2033 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2034 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2035 | } |
2036 | ||
2037 | return vtep_str; | |
2038 | } | |
2039 | ||
c44ab6f1 AK |
2040 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2041 | struct bgp_evpn_es_vtep *es_vtep) | |
2042 | { | |
2043 | json_object *json_vtep_entry; | |
2044 | json_object *json_flags; | |
ec779825 | 2045 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2046 | |
2047 | json_vtep_entry = json_object_new_object(); | |
2048 | ||
ec779825 AK |
2049 | json_object_string_add( |
2050 | json_vtep_entry, "vtep_ip", | |
2051 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
2052 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2053 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2054 | json_flags = json_object_new_array(); | |
2055 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2056 | json_array_string_add(json_flags, "esr"); | |
2057 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2058 | json_array_string_add(json_flags, "active"); | |
2059 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2060 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2061 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2062 | es_vtep->df_pref); | |
2063 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2064 | es_vtep->df_pref); | |
2065 | } | |
c44ab6f1 AK |
2066 | } |
2067 | ||
2068 | json_object_array_add(json_vteps, | |
2069 | json_vtep_entry); | |
2070 | } | |
2071 | ||
74e2bd89 AK |
2072 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2073 | struct bgp_evpn_es *es) | |
2074 | { | |
2075 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2076 | struct listnode *node; | |
2077 | struct bgp_evpn_es_vtep *es_vtep; | |
2078 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2079 | ||
2080 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2081 | vtep_flag_str[0] = '\0'; | |
2082 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2083 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2084 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2085 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2086 | ||
2087 | if (!strlen(vtep_flag_str)) | |
2088 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2089 | ||
ec779825 | 2090 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2091 | vtep_flag_str); |
2092 | ||
2093 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2094 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2095 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2096 | sizeof(alg_buf)), | |
2097 | es_vtep->df_pref); | |
2098 | else | |
2099 | vty_out(vty, "\n"); | |
2100 | } | |
2101 | } | |
2102 | ||
c44ab6f1 AK |
2103 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2104 | struct bgp_evpn_es *es, json_object *json) | |
2105 | { | |
2106 | char buf1[RD_ADDRSTRLEN]; | |
2107 | struct listnode *node; | |
2108 | struct bgp_evpn_es_vtep *es_vtep; | |
2109 | ||
2110 | if (json) { | |
2111 | json_object *json_vteps; | |
2112 | json_object *json_types; | |
2113 | ||
2114 | json_object_string_add(json, "esi", es->esi_str); | |
2115 | json_object_string_add(json, "rd", | |
2116 | prefix_rd2str(&es->prd, buf1, | |
2117 | sizeof(buf1))); | |
2118 | ||
2119 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2120 | json_types = json_object_new_array(); | |
2121 | if (es->flags & BGP_EVPNES_LOCAL) | |
2122 | json_array_string_add(json_types, "local"); | |
2123 | if (es->flags & BGP_EVPNES_REMOTE) | |
2124 | json_array_string_add(json_types, "remote"); | |
2125 | json_object_object_add(json, "type", json_types); | |
2126 | } | |
2127 | ||
2128 | if (listcount(es->es_vtep_list)) { | |
2129 | json_vteps = json_object_new_array(); | |
2130 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2131 | node, es_vtep)) { | |
2132 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2133 | } | |
2134 | json_object_object_add(json, "vteps", json_vteps); | |
2135 | } | |
2136 | json_object_int_add(json, "vniCount", | |
2137 | listcount(es->es_evi_list)); | |
2138 | } else { | |
2139 | char type_str[4]; | |
2140 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2141 | ||
2142 | type_str[0] = '\0'; | |
74be8313 AK |
2143 | if (es->flags & BGP_EVPNES_BYPASS) |
2144 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2145 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2146 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2147 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2148 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2149 | if (es->inconsistencies) |
9e0c2fd1 | 2150 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2151 | |
9e0c2fd1 | 2152 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2153 | |
2154 | if (es->flags & BGP_EVPNES_LOCAL) | |
2155 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2156 | else | |
9e0c2fd1 | 2157 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2158 | |
2159 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2160 | es->esi_str, type_str, buf1, | |
2161 | listcount(es->es_evi_list), vtep_str); | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2166 | struct bgp_evpn_es *es, json_object *json) | |
2167 | { | |
ec779825 | 2168 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 2169 | |
c44ab6f1 AK |
2170 | if (json) { |
2171 | json_object *json_flags; | |
2172 | json_object *json_incons; | |
74e2bd89 AK |
2173 | json_object *json_vteps; |
2174 | struct listnode *node; | |
2175 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2176 | |
2177 | /* Add the "brief" info first */ | |
2178 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2179 | if (es->flags |
2180 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2181 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2182 | json_flags = json_object_new_array(); |
2183 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2184 | json_array_string_add(json_flags, "up"); | |
2185 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2186 | json_array_string_add(json_flags, | |
2187 | "advertiseEVI"); | |
74be8313 AK |
2188 | if (es->flags & BGP_EVPNES_BYPASS) |
2189 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2190 | json_object_object_add(json, "flags", json_flags); |
2191 | } | |
2192 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 2193 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 2194 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
2195 | json_object_int_add(json, "remoteVniCount", |
2196 | es->remote_es_evi_cnt); | |
229587fb AK |
2197 | json_object_int_add(json, "vrfCount", |
2198 | listcount(es->es_vrf_list)); | |
2199 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2200 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2201 | json_object_int_add(json, "macipGlobalPathCount", |
2202 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2203 | json_object_int_add(json, "inconsistentVniVtepCount", |
2204 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2205 | if (listcount(es->es_vtep_list)) { |
2206 | json_vteps = json_object_new_array(); | |
2207 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2208 | es_vtep)) { | |
2209 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2210 | } | |
2211 | json_object_object_add(json, "vteps", json_vteps); | |
2212 | } | |
c44ab6f1 AK |
2213 | if (es->inconsistencies) { |
2214 | json_incons = json_object_new_array(); | |
2215 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2216 | json_array_string_add(json_incons, | |
2217 | "vni-vtep-mismatch"); | |
2218 | json_object_object_add(json, "inconsistencies", | |
2219 | json_incons); | |
2220 | } | |
2221 | } else { | |
2222 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2223 | char type_str[4]; | |
c44ab6f1 AK |
2224 | char buf1[RD_ADDRSTRLEN]; |
2225 | ||
2226 | type_str[0] = '\0'; | |
2227 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2228 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2229 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2230 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2231 | |
c44ab6f1 AK |
2232 | if (es->flags & BGP_EVPNES_LOCAL) |
2233 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2234 | else | |
9e0c2fd1 | 2235 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2236 | |
2237 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2238 | vty_out(vty, " Type: %s\n", type_str); | |
2239 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2240 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2241 | if (es->flags & BGP_EVPNES_LOCAL) |
2242 | vty_out(vty, " Local ES DF preference: %u\n", | |
2243 | es->df_pref); | |
74be8313 AK |
2244 | if (es->flags & BGP_EVPNES_BYPASS) |
2245 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2246 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2247 | vty_out(vty, " Remote VNI Count: %d\n", | |
2248 | es->remote_es_evi_cnt); | |
229587fb | 2249 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2250 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2251 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2252 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2253 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2254 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2255 | es->incons_evi_vtep_cnt); | |
2256 | if (es->inconsistencies) { | |
2257 | incons_str[0] = '\0'; | |
2258 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2259 | strlcat(incons_str, "vni-vtep-mismatch", |
2260 | sizeof(incons_str)); | |
c44ab6f1 | 2261 | } else { |
9e0c2fd1 | 2262 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2263 | } |
2264 | vty_out(vty, " Inconsistencies: %s\n", | |
2265 | incons_str); | |
74e2bd89 AK |
2266 | if (listcount(es->es_vtep_list)) { |
2267 | vty_out(vty, " VTEPs:\n"); | |
2268 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2269 | } | |
c44ab6f1 AK |
2270 | vty_out(vty, "\n"); |
2271 | } | |
2272 | } | |
2273 | ||
2274 | /* Display all ESs */ | |
2275 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2276 | { | |
2277 | struct bgp_evpn_es *es; | |
9c7edc03 | 2278 | json_object *json_array = NULL; |
c44ab6f1 AK |
2279 | json_object *json = NULL; |
2280 | ||
2281 | if (uj) { | |
2282 | /* create an array of ESs */ | |
2283 | json_array = json_object_new_array(); | |
2284 | } else { | |
2285 | if (!detail) { | |
2286 | vty_out(vty, | |
74be8313 | 2287 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2288 | vty_out(vty, |
2289 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2290 | vty_out(vty, | |
2291 | "%-30s %-5s %-21s %-8s %s\n", | |
2292 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2293 | } | |
2294 | } | |
2295 | ||
2296 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2297 | if (uj) | |
2298 | /* create a separate json object for each ES */ | |
2299 | json = json_object_new_object(); | |
2300 | if (detail) | |
2301 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2302 | else | |
2303 | bgp_evpn_es_show_entry(vty, es, json); | |
2304 | /* add ES to the json array */ | |
2305 | if (uj) | |
2306 | json_object_array_add(json_array, json); | |
2307 | } | |
2308 | ||
2309 | /* print the array of json-ESs */ | |
2310 | if (uj) { | |
2311 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2312 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2313 | json_object_free(json_array); | |
2314 | } | |
2315 | } | |
2316 | ||
2317 | /* Display specific ES */ | |
2318 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2319 | { | |
2320 | struct bgp_evpn_es *es; | |
2321 | json_object *json = NULL; | |
2322 | ||
2323 | if (uj) | |
2324 | json = json_object_new_object(); | |
2325 | ||
2326 | es = bgp_evpn_es_find(esi); | |
2327 | if (es) { | |
2328 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2329 | } else { | |
2330 | if (!uj) | |
2331 | vty_out(vty, "ESI not found\n"); | |
2332 | } | |
2333 | ||
2334 | if (uj) { | |
2335 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2336 | json, JSON_C_TO_STRING_PRETTY)); | |
2337 | json_object_free(json); | |
2338 | } | |
2339 | } | |
2340 | ||
c589d847 AK |
2341 | /*****************************************************************************/ |
2342 | /* Ethernet Segment to VRF association - | |
2343 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2344 | * triggers the creation of an ES-VRF entry. | |
2345 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2346 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2347 | * a /32 or host route entry in the dataplane. If the destination of | |
2348 | * the host route is a remote-ES the route is programmed with the | |
2349 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2350 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2351 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2352 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2353 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2354 | * allowing for a faster failover. | |
2355 | * | |
2356 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2357 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2358 | * in that VRF. | |
2359 | */ | |
2360 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2361 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2362 | bool v4_nhg) | |
c589d847 | 2363 | { |
8bcb09a1 AK |
2364 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2365 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2366 | struct listnode *node; |
2367 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2368 | struct nexthop nh; |
2369 | struct zapi_nexthop *api_nh; | |
2370 | struct zapi_nhg api_nhg = {}; | |
2371 | ||
2372 | /* Skip installation of L3-NHG if host routes used */ | |
2373 | if (!nhg_id) | |
2374 | return; | |
c589d847 AK |
2375 | |
2376 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2377 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2378 | es_vrf->bgp_vrf->vrf_id, | |
2379 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2380 | ||
2381 | /* only the gateway ip changes for each NH. rest of the params | |
2382 | * are constant | |
2383 | */ | |
2384 | memset(&nh, 0, sizeof(nh)); | |
2385 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2386 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2387 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2388 | nh.weight = 1; | |
2389 | nh.type = | |
2390 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2391 | ||
2392 | api_nhg.id = nhg_id; | |
c589d847 | 2393 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2394 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2395 | continue; | |
2396 | ||
2397 | /* overwrite the gw */ | |
2398 | if (v4_nhg) | |
2399 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2400 | else | |
2401 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2402 | es_vtep->vtep_ip); | |
2403 | ||
2404 | /* convert to zapi format */ | |
2405 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2406 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2407 | ||
2408 | ++api_nhg.nexthop_num; | |
2409 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2410 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2411 | &es_vtep->vtep_ip, | |
2412 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2413 | } |
2414 | ||
8bcb09a1 AK |
2415 | if (!api_nhg.nexthop_num) |
2416 | return; | |
2417 | ||
2418 | if (api_nhg.nexthop_num > MULTIPATH_NUM) | |
2419 | return; | |
2420 | ||
2421 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); | |
c589d847 AK |
2422 | } |
2423 | ||
8bcb09a1 AK |
2424 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2425 | { | |
2426 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2427 | return false; | |
2428 | ||
2429 | /* Check socket. */ | |
2430 | if (!zclient || zclient->sock < 0) | |
2431 | return false; | |
2432 | ||
2433 | return true; | |
2434 | } | |
2435 | ||
2436 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2437 | { |
8bcb09a1 AK |
2438 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2439 | return; | |
2440 | ||
2441 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2442 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2443 | } | |
2444 | ||
2445 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2446 | bool v4_nhg) | |
2447 | { | |
2448 | struct zapi_nhg api_nhg = {}; | |
2449 | ||
2450 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2451 | ||
2452 | /* Skip installation of L3-NHG if host routes used */ | |
2453 | if (!api_nhg.id) | |
2454 | return; | |
2455 | ||
c589d847 | 2456 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2457 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2458 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2459 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2460 | ||
2461 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2462 | } | |
c589d847 | 2463 | |
8bcb09a1 AK |
2464 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2465 | { | |
2466 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2467 | return; | |
2468 | ||
2469 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2470 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2471 | } |
2472 | ||
2473 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2474 | { | |
2475 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2476 | return; | |
2477 | ||
2478 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2479 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2480 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2481 | es_vrf->nhg_id); | |
2482 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2483 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2484 | /* MAC-IPs can now be installed via the L3NHG */ |
2485 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2486 | } |
2487 | ||
2488 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2489 | { | |
2490 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2491 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2492 | return; | |
2493 | } | |
2494 | ||
2495 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2496 | if (!update) | |
2497 | return; | |
2498 | } else { | |
2499 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2500 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2501 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2502 | es_vrf->nhg_id); | |
2503 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2504 | /* MAC-IPs can now be installed via the L3NHG */ |
2505 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2506 | } |
2507 | ||
2508 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2509 | } | |
2510 | ||
2511 | /* when a VTEP is activated or de-activated against an ES associated | |
2512 | * VRFs' NHG needs to be updated | |
2513 | */ | |
2514 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2515 | { | |
2516 | struct bgp_evpn_es_vrf *es_vrf; | |
2517 | struct listnode *es_vrf_node; | |
2518 | ||
2519 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2520 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2521 | ||
2522 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2523 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2524 | } | |
2525 | ||
2526 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2527 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2528 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2529 | { | |
2530 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2531 | } | |
2532 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2533 | ||
2534 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2535 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2536 | { | |
2537 | /* Initialize the ES-VRF RB tree */ | |
2538 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2539 | } | |
2540 | ||
2541 | /* find the ES-VRF in the per-VRF RB tree */ | |
2542 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2543 | struct bgp *bgp_vrf) | |
2544 | { | |
2545 | struct bgp_evpn_es_vrf es_vrf; | |
2546 | ||
2547 | es_vrf.es = es; | |
2548 | ||
2549 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2550 | } | |
2551 | ||
2552 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2553 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2554 | struct bgp *bgp_vrf) | |
2555 | { | |
2556 | struct bgp_evpn_es_vrf *es_vrf; | |
2557 | ||
2558 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2559 | ||
2560 | es_vrf->es = es; | |
2561 | es_vrf->bgp_vrf = bgp_vrf; | |
2562 | ||
2563 | /* insert into the VRF-ESI rb tree */ | |
2564 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2565 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2566 | return NULL; | |
2567 | } | |
2568 | ||
2569 | /* add to the ES's VRF list */ | |
2570 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2571 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2572 | ||
2573 | /* setup the L3 NHG id for the ES */ | |
2574 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2575 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2576 | ||
c589d847 | 2577 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2578 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2579 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2580 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2581 | ||
36dd4574 AK |
2582 | /* update paths in the VRF that may already be associated with |
2583 | * this destination ES | |
2584 | */ | |
58bff4d1 | 2585 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2586 | |
c589d847 AK |
2587 | return es_vrf; |
2588 | } | |
2589 | ||
2590 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2591 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2592 | { | |
2593 | struct bgp_evpn_es *es = es_vrf->es; | |
2594 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2595 | ||
2596 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2597 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2598 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2599 | ||
2600 | /* Remove the NHG resources */ | |
2601 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2602 | if (es_vrf->nhg_id) | |
2603 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2604 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2605 | if (es_vrf->v6_nhg_id) |
2606 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2607 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2608 | |
2609 | /* remove from the ES's VRF list */ | |
2610 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2611 | ||
2612 | /* remove from the VRF-ESI rb tree */ | |
2613 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2614 | ||
d656e0ae AK |
2615 | /* update paths in the VRF that may already be associated with |
2616 | * this destination ES | |
2617 | */ | |
58bff4d1 | 2618 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2619 | |
c589d847 AK |
2620 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2621 | } | |
2622 | ||
2623 | /* deref and delete if there are no references */ | |
2624 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2625 | { | |
2626 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2627 | ||
2628 | if (!es_vrf) | |
2629 | return; | |
2630 | ||
2631 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2632 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2633 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2634 | es_vrf->bgp_vrf->vrf_id); | |
2635 | ||
2636 | es_evi->es_vrf = NULL; | |
2637 | if (es_vrf->ref_cnt) | |
2638 | --es_vrf->ref_cnt; | |
2639 | ||
2640 | if (!es_vrf->ref_cnt) | |
2641 | bgp_evpn_es_vrf_delete(es_vrf); | |
2642 | } | |
2643 | ||
2644 | /* find or create and reference */ | |
2645 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2646 | { | |
2647 | struct bgp_evpn_es *es = es_evi->es; | |
2648 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2649 | struct bgp *old_bgp_vrf = NULL; | |
2650 | ||
2651 | if (es_vrf) | |
2652 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2653 | ||
2654 | if (old_bgp_vrf == bgp_vrf) | |
2655 | return; | |
2656 | ||
2657 | /* deref the old ES-VRF */ | |
2658 | bgp_evpn_es_vrf_deref(es_evi); | |
2659 | ||
2660 | if (!bgp_vrf) | |
2661 | return; | |
2662 | ||
2663 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2664 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2665 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2666 | ||
2667 | /* find-create the new ES-VRF */ | |
2668 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2669 | if (!es_vrf) | |
2670 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2671 | if (!es_vrf) | |
2672 | return; | |
2673 | ||
2674 | es_evi->es_vrf = es_vrf; | |
2675 | ++es_vrf->ref_cnt; | |
2676 | } | |
2677 | ||
2678 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2679 | * associated ES-EVI entries | |
2680 | */ | |
2681 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2682 | { | |
2683 | struct bgp_evpn_es_evi *es_evi; | |
2684 | ||
2685 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2686 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2687 | ||
2688 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2689 | bgp_evpn_es_vrf_deref(es_evi); | |
2690 | } | |
2691 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2692 | { | |
2693 | struct bgp_evpn_es_evi *es_evi; | |
2694 | ||
2695 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2696 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2697 | ||
2698 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2699 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2700 | } | |
2701 | ||
58bff4d1 AK |
2702 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2703 | * multi-path list. | |
2704 | * 2. If ES-VRF is present - | |
2705 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2706 | * all the PEs attached to the VRF are down) do not install the route | |
2707 | * in zebra. | |
2708 | * - if L3NHG has been activated install the route via that L3NHG | |
2709 | */ | |
2710 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2711 | bool *is_l3nhg_active, | |
2712 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2713 | { |
2714 | struct bgp_evpn_es *es; | |
2715 | struct bgp_evpn_es_vrf *es_vrf; | |
2716 | ||
2717 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2718 | return; |
36dd4574 AK |
2719 | |
2720 | es = bgp_evpn_es_find(esi); | |
2721 | if (!es) | |
58bff4d1 | 2722 | return; |
36dd4574 AK |
2723 | |
2724 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2725 | if (!es_vrf) | |
58bff4d1 AK |
2726 | return; |
2727 | ||
2728 | *use_l3nhg = true; | |
2729 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2730 | *is_l3nhg_active = true; | |
36dd4574 AK |
2731 | if (es_vrf_p) |
2732 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2733 | } |
2734 | ||
6348981a AK |
2735 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2736 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2737 | uint32_t *nhg_p) | |
2738 | { | |
2739 | esi_t *esi; | |
36dd4574 | 2740 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2741 | struct bgp_path_info *parent_pi; |
2742 | struct bgp_node *rn; | |
2743 | struct prefix_evpn *evp; | |
2744 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2745 | bool use_l3nhg = false; |
2746 | bool is_l3nhg_active = false; | |
6348981a AK |
2747 | |
2748 | *nhg_p = 0; | |
2749 | ||
9f570418 AK |
2750 | /* we don't support NHG for routes leaked from another VRF yet */ |
2751 | if (pi->extra && pi->extra->bgp_orig) | |
2752 | return false; | |
2753 | ||
6348981a AK |
2754 | parent_pi = get_route_parent_evpn(pi); |
2755 | if (!parent_pi) | |
2756 | return false; | |
2757 | ||
2758 | rn = parent_pi->net; | |
2759 | if (!rn) | |
2760 | return false; | |
2761 | ||
2762 | evp = (struct prefix_evpn *)&rn->p; | |
2763 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2764 | return false; | |
2765 | ||
6348981a AK |
2766 | /* non-es path, use legacy-exploded multipath */ |
2767 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2768 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2769 | return false; | |
2770 | ||
58bff4d1 AK |
2771 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2772 | &es_vrf); | |
2773 | ||
36dd4574 | 2774 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2775 | if (!use_l3nhg) |
36dd4574 AK |
2776 | return false; |
2777 | ||
2778 | /* if the NHG has not been installed we cannot install the route yet, | |
2779 | * return a 0-NHG to indicate that | |
6348981a | 2780 | */ |
58bff4d1 | 2781 | if (!is_l3nhg_active) |
6348981a AK |
2782 | return true; |
2783 | ||
2784 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2785 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2786 | *nhg_p = es_vrf->v6_nhg_id; |
2787 | else | |
2788 | *nhg_p = es_vrf->nhg_id; | |
2789 | ||
2790 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2791 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2792 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2793 | * the NHG associated with the ES. fallback to legacy-exploded |
2794 | * multipath | |
2795 | */ | |
2796 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2797 | sizeof(*esi))) | |
2798 | return false; | |
2799 | } | |
2800 | ||
2801 | return true; | |
2802 | } | |
2803 | ||
229587fb AK |
2804 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2805 | struct bgp_evpn_es_vrf *es_vrf, | |
2806 | json_object *json) | |
2807 | { | |
2808 | struct bgp_evpn_es *es = es_vrf->es; | |
2809 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2810 | ||
2811 | if (json) { | |
2812 | json_object *json_types; | |
2813 | ||
2814 | json_object_string_add(json, "esi", es->esi_str); | |
2815 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2816 | ||
2817 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2818 | json_types = json_object_new_array(); | |
2819 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2820 | json_array_string_add(json_types, "active"); | |
2821 | json_object_object_add(json, "flags", json_types); | |
2822 | } | |
2823 | ||
2824 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2825 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2826 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2827 | } else { | |
2828 | char flags_str[4]; | |
2829 | ||
2830 | flags_str[0] = '\0'; | |
2831 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2832 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2833 | ||
2834 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2835 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2836 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2837 | } | |
2838 | } | |
2839 | ||
2840 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2841 | struct bgp_evpn_es *es) | |
2842 | { | |
2843 | json_object *json = NULL; | |
2844 | struct listnode *es_vrf_node; | |
2845 | struct bgp_evpn_es_vrf *es_vrf; | |
2846 | ||
2847 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2848 | /* create a separate json object for each ES-VRF */ | |
2849 | if (json_array) | |
2850 | json = json_object_new_object(); | |
2851 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2852 | /* add ES-VRF to the json array */ | |
2853 | if (json_array) | |
2854 | json_object_array_add(json_array, json); | |
2855 | } | |
2856 | } | |
2857 | ||
2858 | /* Display all ES VRFs */ | |
2859 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
2860 | { | |
2861 | json_object *json_array = NULL; | |
2862 | ||
2863 | if (uj) { | |
2864 | /* create an array of ESs */ | |
2865 | json_array = json_object_new_array(); | |
2866 | } else { | |
2867 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
2868 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
2869 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
2870 | } | |
2871 | ||
2872 | if (es) { | |
2873 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2874 | } else { | |
2875 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
2876 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2877 | } | |
2878 | ||
2879 | /* print the array of json-ESs */ | |
2880 | if (uj) { | |
2881 | vty_out(vty, "%s\n", | |
2882 | json_object_to_json_string_ext( | |
2883 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2884 | json_object_free(json_array); | |
2885 | } | |
2886 | } | |
2887 | ||
2888 | /* Display specific ES VRF */ | |
2889 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2890 | { | |
2891 | struct bgp_evpn_es *es; | |
2892 | ||
2893 | es = bgp_evpn_es_find(esi); | |
2894 | if (es) { | |
2895 | bgp_evpn_es_vrf_show(vty, uj, es); | |
2896 | } else { | |
2897 | if (!uj) | |
2898 | vty_out(vty, "ESI not found\n"); | |
2899 | } | |
2900 | } | |
2901 | ||
c44ab6f1 AK |
2902 | /*****************************************************************************/ |
2903 | /* Ethernet Segment to EVI association - | |
2904 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
2905 | * (bgpevpn->es_evi_rb_tree). | |
2906 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
2907 | * advertises an EAD-EVI (Type-1 EVPN) route | |
2908 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
2909 | * it. | |
2910 | */ | |
2911 | ||
2912 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
2913 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
2914 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
2915 | * VTEPs for which both routes have been rxed are activated. Activation | |
2916 | * creates a NHG in the parent ES. | |
2917 | */ | |
2918 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
2919 | { | |
2920 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
2921 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
2922 | ||
2923 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
2924 | } | |
2925 | ||
2926 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
2927 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2928 | { | |
2929 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2930 | ||
2931 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
2932 | ||
2933 | evi_vtep->es_evi = es_evi; | |
2934 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
2935 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
2936 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2937 | ||
2938 | return evi_vtep; | |
2939 | } | |
2940 | ||
2941 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2942 | { | |
2943 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
2944 | ||
2945 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
2946 | /* as long as there is some reference we can't free it */ | |
2947 | return; | |
2948 | ||
2949 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
2950 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
2951 | } | |
2952 | ||
2953 | /* check if VTEP is already part of the list */ | |
2954 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
2955 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
2956 | { | |
2957 | struct listnode *node = NULL; | |
2958 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
2959 | ||
2960 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
2961 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
2962 | return evi_vtep; | |
2963 | } | |
2964 | return NULL; | |
2965 | } | |
2966 | ||
2967 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
2968 | * EAD-per-EVI routes are rxed from it. | |
2969 | */ | |
2970 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
2971 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
2972 | { | |
2973 | bool old_active; | |
2974 | bool new_active; | |
fe8293c3 | 2975 | uint32_t ead_activity_flags; |
c44ab6f1 AK |
2976 | |
2977 | old_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2978 | ||
fe8293c3 AK |
2979 | if (bgp_mh_info->ead_evi_rx) |
2980 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
2981 | * before it can be activated. | |
2982 | */ | |
2983 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
2984 | else | |
2985 | /* EAD-per-ES is sufficent to activate the PE */ | |
2986 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
2987 | ||
2988 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
2989 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
2990 | else | |
2991 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2992 | ||
2993 | new_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
2994 | ||
2995 | if (old_active == new_active) | |
2996 | return; | |
2997 | ||
2998 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
2999 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3000 | evi_vtep->es_evi->es->esi_str, | |
3001 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3002 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3003 | |
3004 | /* add VTEP to parent es */ | |
3005 | if (new_active) { | |
3006 | struct bgp_evpn_es_vtep *es_vtep; | |
3007 | ||
3008 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
3009 | evi_vtep->vtep_ip, false /*esr*/, |
3010 | 0, 0); | |
c44ab6f1 AK |
3011 | evi_vtep->es_vtep = es_vtep; |
3012 | } else { | |
3013 | if (evi_vtep->es_vtep) { | |
3014 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3015 | false /*esr*/); | |
3016 | evi_vtep->es_vtep = NULL; | |
3017 | } | |
3018 | } | |
3019 | /* queue up the parent es for background consistency checks */ | |
3020 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3021 | } | |
3022 | ||
3023 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3024 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3025 | bool ead_es) | |
3026 | { | |
3027 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3028 | ||
3029 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3030 | ||
3031 | if (!evi_vtep) | |
3032 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3033 | ||
3034 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3035 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3036 | evi_vtep->es_evi->es->esi_str, | |
3037 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3038 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3039 | |
3040 | if (ead_es) | |
3041 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3042 | else | |
3043 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3044 | ||
3045 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3046 | } | |
3047 | ||
3048 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3049 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3050 | bool ead_es) | |
3051 | { | |
3052 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3053 | ||
3054 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3055 | if (!evi_vtep) | |
3056 | return; | |
3057 | ||
3058 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3059 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3060 | evi_vtep->es_evi->es->esi_str, | |
3061 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3062 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3063 | |
3064 | if (ead_es) | |
3065 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3066 | else | |
3067 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3068 | ||
3069 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3070 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3071 | } | |
3072 | ||
3073 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3074 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3075 | const struct bgp_evpn_es_evi *es_evi2) | |
3076 | { | |
3077 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3078 | } | |
3079 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3080 | ||
3081 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3082 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3083 | struct bgpevpn *vpn) | |
3084 | { | |
3085 | struct bgp_evpn_es_evi es_evi; | |
3086 | ||
3087 | es_evi.es = es; | |
3088 | ||
3089 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3090 | } | |
3091 | ||
3092 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3093 | * tables. | |
3094 | */ | |
3095 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3096 | struct bgpevpn *vpn) | |
3097 | { | |
3098 | struct bgp_evpn_es_evi *es_evi; | |
3099 | ||
3100 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3101 | ||
3102 | es_evi->es = es; | |
3103 | es_evi->vpn = vpn; | |
3104 | ||
3105 | /* Initialise the VTEP list */ | |
3106 | es_evi->es_evi_vtep_list = list_new(); | |
3107 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3108 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3109 | ||
3110 | /* insert into the VNI-ESI rb tree */ | |
3111 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3112 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3113 | return NULL; | |
3114 | } | |
3115 | ||
3116 | /* add to the ES's VNI list */ | |
3117 | listnode_init(&es_evi->es_listnode, es_evi); | |
3118 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3119 | ||
c589d847 AK |
3120 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3121 | ||
c44ab6f1 AK |
3122 | return es_evi; |
3123 | } | |
3124 | ||
3125 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3126 | * up the memory. | |
3127 | */ | |
333ad64b AK |
3128 | static struct bgp_evpn_es_evi * |
3129 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3130 | { |
3131 | struct bgp_evpn_es *es = es_evi->es; | |
3132 | struct bgpevpn *vpn = es_evi->vpn; | |
3133 | ||
3134 | /* cannot free the element as long as there is a local or remote | |
3135 | * reference | |
3136 | */ | |
3137 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3138 | return es_evi; |
c44ab6f1 | 3139 | |
c589d847 AK |
3140 | bgp_evpn_es_vrf_deref(es_evi); |
3141 | ||
c44ab6f1 AK |
3142 | /* remove from the ES's VNI list */ |
3143 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3144 | ||
3145 | /* remove from the VNI-ESI rb tree */ | |
3146 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3147 | ||
3148 | /* free the VTEP list */ | |
3149 | list_delete(&es_evi->es_evi_vtep_list); | |
3150 | ||
3151 | /* remove from the VNI-ESI rb tree */ | |
3152 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3153 | |
3154 | return NULL; | |
c44ab6f1 AK |
3155 | } |
3156 | ||
3157 | /* init local info associated with the ES-EVI */ | |
3158 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3159 | { | |
3160 | struct bgpevpn *vpn = es_evi->vpn; | |
3161 | ||
3162 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3163 | return; | |
3164 | ||
3165 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3166 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3167 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3168 | } | |
3169 | ||
3170 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3171 | static struct bgp_evpn_es_evi * |
3172 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3173 | { |
3174 | struct bgpevpn *vpn = es_evi->vpn; | |
3175 | ||
3176 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3177 | return es_evi; |
c44ab6f1 AK |
3178 | |
3179 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3180 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3181 | ||
333ad64b | 3182 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3183 | } |
3184 | ||
3185 | /* eval remote info associated with the ES */ | |
3186 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3187 | { | |
3188 | struct bgp_evpn_es *es = es_evi->es; | |
3189 | ||
3190 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3191 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3192 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3193 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3194 | ++es->remote_es_evi_cnt; | |
3195 | /* set remote on the parent es */ | |
3196 | bgp_evpn_es_remote_info_re_eval(es); | |
3197 | } | |
3198 | } else { | |
3199 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3200 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3201 | if (es->remote_es_evi_cnt) | |
3202 | --es->remote_es_evi_cnt; | |
3203 | bgp_evpn_es_evi_free(es_evi); | |
3204 | /* check if "remote" can be cleared from the | |
3205 | * parent es. | |
3206 | */ | |
3207 | bgp_evpn_es_remote_info_re_eval(es); | |
3208 | } | |
3209 | } | |
3210 | } | |
3211 | ||
333ad64b AK |
3212 | static struct bgp_evpn_es_evi * |
3213 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3214 | { |
3215 | struct prefix_evpn p; | |
3216 | struct bgp_evpn_es *es = es_evi->es; | |
3217 | struct bgp *bgp; | |
3218 | ||
3219 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3220 | return es_evi; |
c44ab6f1 AK |
3221 | |
3222 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3223 | zlog_debug("del local es %s evi %u", | |
3224 | es_evi->es->esi_str, | |
3225 | es_evi->vpn->vni); | |
3226 | ||
3227 | bgp = bgp_get_evpn(); | |
3228 | ||
3229 | if (bgp) { | |
3230 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3231 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3232 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3233 | &es->esi, es->originator_ip); | |
3234 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3235 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3236 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3237 | bgp->vrf_id, es->esi_str, | |
3238 | es_evi->vpn->vni); | |
3239 | } | |
3240 | ||
3241 | /* withdraw and delete EAD-EVI */ | |
3242 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3243 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3244 | &es->esi, es->originator_ip); | |
3245 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3246 | es, es_evi->vpn, &p)) | |
3247 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3248 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3249 | bgp->vrf_id, es->esi_str, | |
3250 | es_evi->vpn->vni); | |
3251 | } | |
3252 | } | |
3253 | ||
333ad64b | 3254 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3255 | } |
3256 | ||
3257 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3258 | { | |
3259 | struct bgpevpn *vpn; | |
3260 | struct bgp_evpn_es *es; | |
3261 | struct bgp_evpn_es_evi *es_evi; | |
3262 | char buf[ESI_STR_LEN]; | |
3263 | ||
3264 | es = bgp_evpn_es_find(esi); | |
3265 | if (!es) { | |
3266 | flog_err( | |
3267 | EC_BGP_ES_CREATE, | |
3268 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3269 | bgp->vrf_id, vni, | |
3270 | esi_to_str(esi, buf, sizeof(buf))); | |
3271 | return -1; | |
3272 | } | |
3273 | ||
3274 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3275 | if (!vpn) { | |
3276 | flog_err( | |
3277 | EC_BGP_ES_CREATE, | |
3278 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3279 | bgp->vrf_id, vni, es->esi_str); | |
3280 | return -1; | |
3281 | } | |
3282 | ||
3283 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3284 | if (!es_evi) { | |
3285 | flog_err( | |
3286 | EC_BGP_ES_CREATE, | |
3287 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3288 | bgp->vrf_id, vni, es->esi_str); | |
3289 | return -1; | |
3290 | } | |
3291 | ||
3292 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3293 | return 0; | |
3294 | } | |
3295 | ||
3296 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3297 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3298 | { | |
3299 | struct bgpevpn *vpn; | |
3300 | struct prefix_evpn p; | |
3301 | struct bgp_evpn_es *es; | |
3302 | struct bgp_evpn_es_evi *es_evi; | |
3303 | char buf[ESI_STR_LEN]; | |
3304 | ||
3305 | es = bgp_evpn_es_find(esi); | |
3306 | if (!es) { | |
3307 | flog_err( | |
3308 | EC_BGP_ES_CREATE, | |
3309 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3310 | bgp->vrf_id, vni, | |
3311 | esi_to_str(esi, buf, sizeof(buf))); | |
3312 | return -1; | |
3313 | } | |
3314 | ||
3315 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3316 | if (!vpn) { | |
3317 | flog_err( | |
3318 | EC_BGP_ES_CREATE, | |
3319 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3320 | bgp->vrf_id, vni, es->esi_str); | |
3321 | return -1; | |
3322 | } | |
3323 | ||
3324 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3325 | zlog_debug("add local es %s evi %u", | |
3326 | es->esi_str, vni); | |
3327 | ||
3328 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3329 | ||
3330 | if (es_evi) { | |
3331 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3332 | /* dup */ | |
3333 | return 0; | |
3334 | } else { | |
3335 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3336 | if (!es_evi) | |
3337 | return -1; | |
3338 | } | |
3339 | ||
3340 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3341 | ||
3342 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3343 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3344 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3345 | es->originator_ip); | |
c44ab6f1 AK |
3346 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3347 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3348 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3349 | bgp->vrf_id, es->esi_str, vni); | |
3350 | } | |
3351 | ||
3352 | /* update EAD-ES */ | |
3353 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3354 | &es->esi, es->originator_ip); | |
74be8313 | 3355 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3356 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3357 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3358 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3359 | bgp->vrf_id, es->esi_str, vni); | |
3360 | } | |
3361 | ||
3362 | return 0; | |
3363 | } | |
3364 | ||
3365 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3366 | * ES-EVI is implicity created on first VTEP's reference. | |
3367 | */ | |
3368 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3369 | const struct prefix_evpn *p) | |
3370 | { | |
3371 | char buf[ESI_STR_LEN]; | |
3372 | struct bgp_evpn_es *es; | |
3373 | struct bgp_evpn_es_evi *es_evi; | |
3374 | bool ead_es; | |
3375 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3376 | ||
3377 | if (!vpn) | |
3378 | /* local EAD-ES need not be sent back to zebra */ | |
3379 | return 0; | |
3380 | ||
3381 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3382 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3383 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3384 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3385 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3386 | |
3387 | es = bgp_evpn_es_find(esi); | |
3388 | if (!es) { | |
3389 | es = bgp_evpn_es_new(bgp, esi); | |
3390 | if (!es) { | |
3391 | flog_err(EC_BGP_ES_CREATE, | |
3392 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3393 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3394 | return -1; | |
3395 | } | |
3396 | } | |
3397 | ||
3398 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3399 | if (!es_evi) { | |
3400 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3401 | if (!es_evi) { | |
45a859f1 | 3402 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3403 | return -1; |
3404 | } | |
3405 | } | |
3406 | ||
3407 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3408 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3409 | ead_es); | |
3410 | ||
3411 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3412 | return 0; | |
3413 | } | |
3414 | ||
3415 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3416 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3417 | */ | |
3418 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3419 | const struct prefix_evpn *p) | |
3420 | { | |
3421 | char buf[ESI_STR_LEN]; | |
3422 | struct bgp_evpn_es *es; | |
3423 | struct bgp_evpn_es_evi *es_evi; | |
3424 | bool ead_es; | |
3425 | ||
3426 | if (!vpn) | |
3427 | /* local EAD-ES need not be sent back to zebra */ | |
3428 | return 0; | |
3429 | ||
3430 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3431 | zlog_debug( |
3432 | "del remote %s es %s evi %u vtep %pI4", | |
3433 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3434 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3435 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3436 | |
3437 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3438 | if (!es) { |
3439 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3440 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3441 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3442 | : "ead-evi", | |
3443 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3444 | sizeof(buf)), | |
3445 | vpn->vni, | |
3446 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3447 | return 0; |
2eef4f20 | 3448 | } |
c44ab6f1 | 3449 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3450 | if (!es_evi) { |
3451 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3452 | zlog_debug( | |
3453 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3454 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3455 | : "ead-evi", | |
3456 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3457 | sizeof(buf)), | |
3458 | vpn->vni, | |
3459 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3460 | return 0; |
2eef4f20 | 3461 | } |
c44ab6f1 AK |
3462 | |
3463 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3464 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3465 | ead_es); | |
3466 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3467 | return 0; | |
3468 | } | |
3469 | ||
333ad64b AK |
3470 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3471 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3472 | { | |
3473 | struct listnode *node = NULL; | |
3474 | struct listnode *nnode = NULL; | |
3475 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3476 | struct bgp *bgp; | |
3477 | ||
3478 | bgp = bgp_get_evpn(); | |
3479 | if (!bgp) | |
3480 | return; | |
3481 | ||
3482 | /* delete all VTEPs */ | |
3483 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3484 | evi_vtep)) { | |
3485 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3486 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3487 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3488 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3489 | } | |
3490 | /* delete the EVI */ | |
3491 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3492 | } | |
3493 | ||
c44ab6f1 AK |
3494 | /* Initialize the ES tables maintained per-L2_VNI */ |
3495 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3496 | { | |
3497 | /* Initialize the ES-EVI RB tree */ | |
3498 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3499 | ||
3500 | /* Initialize the local list maintained for quick walks by type */ | |
3501 | vpn->local_es_evi_list = list_new(); | |
3502 | listset_app_node_mem(vpn->local_es_evi_list); | |
3503 | } | |
3504 | ||
3505 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3506 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3507 | { | |
3508 | struct bgp_evpn_es_evi *es_evi; | |
3509 | struct bgp_evpn_es_evi *es_evi_next; | |
3510 | ||
3511 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3512 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3513 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3514 | if (es_evi) | |
3515 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3516 | } |
3517 | ||
3518 | list_delete(&vpn->local_es_evi_list); | |
3519 | } | |
3520 | ||
3521 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3522 | struct bgp_evpn_es_evi *es_evi, |
3523 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3524 | { |
3525 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3526 | struct listnode *node; | |
3527 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3528 | bool first = true; | |
ec779825 | 3529 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3530 | |
3531 | vtep_str[0] = '\0'; | |
3532 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3533 | vtep_flag_str[0] = '\0'; | |
3534 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3535 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3536 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3537 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3538 | |
9e0c2fd1 AK |
3539 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3540 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3541 | if (first) | |
c44ab6f1 | 3542 | first = false; |
9e0c2fd1 AK |
3543 | else |
3544 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3545 | strlcat(vtep_str, |
ec779825 AK |
3546 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3547 | sizeof(ip_buf)), | |
23d0a753 | 3548 | vtep_str_size); |
9e0c2fd1 AK |
3549 | strlcat(vtep_str, "(", vtep_str_size); |
3550 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3551 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3552 | } |
3553 | ||
3554 | return vtep_str; | |
3555 | } | |
3556 | ||
3557 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3558 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3559 | { | |
3560 | json_object *json_vtep_entry; | |
3561 | json_object *json_flags; | |
ec779825 | 3562 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3563 | |
3564 | json_vtep_entry = json_object_new_object(); | |
3565 | ||
ec779825 AK |
3566 | json_object_string_add( |
3567 | json_vtep_entry, "vtep_ip", | |
3568 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3569 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3570 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3571 | json_flags = json_object_new_array(); | |
3572 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3573 | json_array_string_add(json_flags, "ead-per-es"); | |
3574 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3575 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3576 | json_object_object_add(json_vtep_entry, |
3577 | "flags", json_flags); | |
3578 | } | |
3579 | ||
3580 | json_object_array_add(json_vteps, | |
3581 | json_vtep_entry); | |
3582 | } | |
3583 | ||
3584 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3585 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3586 | { | |
3587 | struct listnode *node; | |
3588 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3589 | ||
3590 | if (json) { | |
3591 | json_object *json_vteps; | |
3592 | json_object *json_types; | |
3593 | ||
3594 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3595 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3596 | ||
3597 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3598 | BGP_EVPNES_EVI_REMOTE)) { | |
3599 | json_types = json_object_new_array(); | |
3600 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3601 | json_array_string_add(json_types, "local"); | |
3602 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3603 | json_array_string_add(json_types, "remote"); | |
3604 | json_object_object_add(json, "type", json_types); | |
3605 | } | |
3606 | ||
3607 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3608 | json_vteps = json_object_new_array(); | |
3609 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3610 | node, evi_vtep)) { | |
3611 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3612 | evi_vtep); | |
3613 | } | |
3614 | json_object_object_add(json, "vteps", json_vteps); | |
3615 | } | |
3616 | } else { | |
3617 | char type_str[4]; | |
3618 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3619 | ||
3620 | type_str[0] = '\0'; | |
3621 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3622 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3623 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3624 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3625 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3626 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3627 | |
9e0c2fd1 | 3628 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3629 | |
3630 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3631 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3632 | type_str, vtep_str); | |
3633 | } | |
3634 | } | |
3635 | ||
3636 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3637 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3638 | { | |
3639 | if (json) { | |
3640 | json_object *json_flags; | |
3641 | ||
3642 | /* Add the "brief" info first */ | |
3643 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3644 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3645 | json_flags = json_object_new_array(); | |
3646 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3647 | json_object_object_add(json, "flags", json_flags); | |
3648 | } | |
3649 | } else { | |
3650 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3651 | char type_str[4]; | |
3652 | ||
3653 | type_str[0] = '\0'; | |
3654 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3655 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3656 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3657 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3658 | |
9e0c2fd1 | 3659 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3660 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3661 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3662 | |
3663 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3664 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3665 | vty_out(vty, " Type: %s\n", type_str); | |
3666 | vty_out(vty, " Inconsistencies: %s\n", | |
3667 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3668 | "es-vtep-mismatch":"-"); | |
3669 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3670 | vty_out(vty, "\n"); | |
3671 | } | |
3672 | } | |
3673 | ||
3674 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3675 | json_object *json_array, bool detail) | |
3676 | { | |
3677 | struct bgp_evpn_es_evi *es_evi; | |
3678 | json_object *json = NULL; | |
3679 | ||
3680 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3681 | if (json_array) | |
3682 | /* create a separate json object for each ES */ | |
3683 | json = json_object_new_object(); | |
3684 | if (detail) | |
3685 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3686 | else | |
3687 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3688 | /* add ES to the json array */ | |
3689 | if (json_array) | |
3690 | json_object_array_add(json_array, json); | |
3691 | } | |
3692 | } | |
3693 | ||
3694 | struct es_evi_show_ctx { | |
3695 | struct vty *vty; | |
3696 | json_object *json; | |
3697 | int detail; | |
3698 | }; | |
3699 | ||
3700 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3701 | void *ctxt) | |
3702 | { | |
3703 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3704 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3705 | ||
3706 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3707 | } | |
3708 | ||
3709 | /* Display all ES EVIs */ | |
3710 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3711 | { | |
3712 | json_object *json_array = NULL; | |
3713 | struct es_evi_show_ctx wctx; | |
3714 | struct bgp *bgp; | |
3715 | ||
3716 | if (uj) { | |
3717 | /* create an array of ES-EVIs */ | |
3718 | json_array = json_object_new_array(); | |
3719 | } | |
3720 | ||
3721 | wctx.vty = vty; | |
3722 | wctx.json = json_array; | |
3723 | wctx.detail = detail; | |
3724 | ||
3725 | bgp = bgp_get_evpn(); | |
3726 | ||
3727 | if (!json_array && !detail) { | |
3728 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3729 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3730 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3731 | "VNI", "ESI", "Flags", "VTEPs"); | |
3732 | } | |
3733 | ||
3734 | if (bgp) | |
3735 | hash_iterate(bgp->vnihash, | |
3736 | (void (*)(struct hash_bucket *, | |
3737 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3738 | &wctx); | |
3739 | if (uj) { | |
3740 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3741 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3742 | json_object_free(json_array); | |
3743 | } | |
3744 | } | |
3745 | ||
3746 | /* Display specific ES EVI */ | |
3747 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3748 | bool uj, bool detail) | |
3749 | { | |
3750 | struct bgpevpn *vpn = NULL; | |
3751 | json_object *json_array = NULL; | |
3752 | struct bgp *bgp; | |
3753 | ||
3754 | if (uj) { | |
3755 | /* create an array of ES-EVIs */ | |
3756 | json_array = json_object_new_array(); | |
3757 | } | |
3758 | ||
3759 | bgp = bgp_get_evpn(); | |
3760 | if (bgp) | |
3761 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3762 | ||
3763 | if (vpn) { | |
3764 | if (!json_array && !detail) { | |
3765 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3766 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3767 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3768 | "VNI", "ESI", "Flags", "VTEPs"); | |
3769 | } | |
3770 | ||
3771 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3772 | } else { | |
3773 | if (!uj) | |
3774 | vty_out(vty, "VNI not found\n"); | |
3775 | } | |
3776 | ||
3777 | if (uj) { | |
3778 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3779 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3780 | json_object_free(json_array); | |
3781 | } | |
3782 | } | |
3783 | ||
3784 | /***************************************************************************** | |
3785 | * Ethernet Segment Consistency checks | |
3786 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3787 | * an inconsistency is detected it is simply logged (and displayed via | |
3788 | * show commands) at this point. A more drastic action can be executed (based | |
3789 | * on user config) in the future. | |
3790 | */ | |
8fc2ffb3 AK |
3791 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3792 | { | |
3793 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3794 | return; | |
3795 | ||
3796 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3797 | zlog_debug("periodic consistency checking started"); | |
3798 | ||
3799 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3800 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3801 | &bgp_mh_info->t_cons_check); | |
3802 | } | |
3803 | ||
c44ab6f1 AK |
3804 | /* queue up the es for background consistency checks */ |
3805 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3806 | { | |
3807 | if (!bgp_mh_info->consistency_checking) | |
3808 | /* consistency checking is not enabled */ | |
3809 | return; | |
3810 | ||
3811 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3812 | /* already queued for consistency checking */ | |
3813 | return; | |
3814 | ||
8fc2ffb3 AK |
3815 | /* start the periodic timer for consistency checks if it is not |
3816 | * already running */ | |
3817 | bgp_evpn_es_cons_checks_timer_start(); | |
3818 | ||
c44ab6f1 AK |
3819 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3820 | listnode_init(&es->pend_es_listnode, es); | |
3821 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3822 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3823 | &es->pend_es_listnode); | |
3824 | } | |
3825 | ||
3826 | /* pull the ES from the consistency check list */ | |
3827 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3828 | { | |
3829 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3830 | return; | |
3831 | ||
3832 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3833 | list_delete_node(bgp_mh_info->pend_es_list, | |
3834 | &es->pend_es_listnode); | |
3835 | } | |
3836 | ||
3837 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3838 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3839 | struct bgp_evpn_es_evi *es_evi) | |
3840 | { | |
3841 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3842 | struct listnode *node; | |
3843 | uint32_t vtep_cnt = 0; | |
3844 | ||
3845 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3846 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3847 | ++vtep_cnt; | |
3848 | } | |
3849 | ||
3850 | return vtep_cnt; | |
3851 | } | |
3852 | ||
3853 | /* Number of active VTEPs associated with the ES */ | |
3854 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3855 | { | |
3856 | struct listnode *node; | |
3857 | uint32_t vtep_cnt = 0; | |
3858 | struct bgp_evpn_es_vtep *es_vtep; | |
3859 | ||
3860 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
3861 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3862 | ++vtep_cnt; | |
3863 | } | |
3864 | ||
3865 | return vtep_cnt; | |
3866 | } | |
3867 | ||
3868 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
3869 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
3870 | { | |
3871 | struct listnode *node; | |
3872 | struct bgp_evpn_es_vtep *next_es_vtep; | |
3873 | ||
3874 | if (es_vtep) | |
3875 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
3876 | else | |
3877 | node = listhead(es->es_vtep_list); | |
3878 | ||
3879 | for (; node; node = listnextnode_unchecked(node)) { | |
3880 | next_es_vtep = listgetdata(node); | |
3881 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3882 | return next_es_vtep; | |
3883 | } | |
3884 | ||
3885 | return NULL; | |
3886 | } | |
3887 | ||
3888 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
3889 | struct bgp_evpn_es_evi *es_evi, | |
3890 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3891 | { | |
3892 | struct listnode *node; | |
3893 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
3894 | ||
3895 | if (evi_vtep) | |
3896 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
3897 | else | |
3898 | node = listhead(es_evi->es_evi_vtep_list); | |
3899 | ||
3900 | for (; node; node = listnextnode_unchecked(node)) { | |
3901 | next_evi_vtep = listgetdata(node); | |
3902 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3903 | return next_evi_vtep; | |
3904 | } | |
3905 | ||
3906 | return NULL; | |
3907 | } | |
3908 | ||
3909 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
3910 | { | |
3911 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
3912 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3913 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
3914 | es_evi->es->esi_str, | |
3915 | es_evi->vpn->vni); | |
3916 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3917 | ||
3918 | /* update parent ES with the incosistency setting */ | |
3919 | if (!es_evi->es->incons_evi_vtep_cnt && | |
3920 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3921 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
3922 | es_evi->es->esi_str); | |
3923 | ++es_evi->es->incons_evi_vtep_cnt; | |
3924 | SET_FLAG(es_evi->es->inconsistencies, | |
3925 | BGP_EVPNES_INCONS_VTEP_LIST); | |
3926 | } | |
3927 | } | |
3928 | ||
3929 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
3930 | { | |
3931 | int proc_cnt = 0; | |
3932 | int es_active_vtep_cnt; | |
3933 | int evi_active_vtep_cnt; | |
3934 | struct bgp_evpn_es_evi *es_evi; | |
3935 | struct listnode *evi_node; | |
3936 | struct bgp_evpn_es_vtep *es_vtep; | |
3937 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3938 | ||
3939 | /* reset the inconsistencies and re-evaluate */ | |
3940 | es->incons_evi_vtep_cnt = 0; | |
3941 | es->inconsistencies = 0; | |
3942 | ||
3943 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
3944 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
3945 | evi_node, es_evi)) { | |
3946 | ++proc_cnt; | |
3947 | ||
3948 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
3949 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
3950 | ||
3951 | evi_active_vtep_cnt = | |
3952 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
3953 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
3954 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3955 | continue; | |
3956 | } | |
3957 | ||
3958 | if (!es_active_vtep_cnt) | |
3959 | continue; | |
3960 | ||
3961 | es_vtep = NULL; | |
3962 | evi_vtep = NULL; | |
3963 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
3964 | es, es_vtep))) { | |
3965 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
3966 | evi_vtep); | |
3967 | if (!evi_vtep) { | |
3968 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3969 | break; | |
3970 | } | |
3971 | if (es_vtep->vtep_ip.s_addr != | |
3972 | evi_vtep->vtep_ip.s_addr) { | |
3973 | /* inconsistency detected; set it and move | |
3974 | * to the next evi | |
3975 | */ | |
3976 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
3977 | break; | |
3978 | } | |
3979 | } | |
3980 | } | |
3981 | ||
3982 | return proc_cnt; | |
3983 | } | |
3984 | ||
3985 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
3986 | { | |
3987 | int proc_cnt = 0; | |
3988 | int es_cnt = 0; | |
3989 | struct listnode *node; | |
3990 | struct listnode *nextnode; | |
3991 | struct bgp_evpn_es *es; | |
3992 | ||
3993 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
3994 | node, nextnode, es)) { | |
3995 | ++es_cnt; | |
3996 | ++proc_cnt; | |
3997 | /* run consistency checks on the ES and remove it from the | |
3998 | * pending list | |
3999 | */ | |
4000 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4001 | bgp_evpn_es_cons_checks_pend_del(es); | |
4002 | if (proc_cnt > 500) | |
4003 | break; | |
4004 | } | |
4005 | ||
4006 | /* restart the timer */ | |
4007 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4008 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4009 | &bgp_mh_info->t_cons_check); | |
4010 | ||
4011 | return 0; | |
4012 | } | |
4013 | ||
090efa2f AK |
4014 | /***************************************************************************** |
4015 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4016 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4017 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4018 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4019 | * | |
4020 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4021 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4022 | * RMAC info). | |
4023 | ****************************************************************************/ | |
4024 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4025 | { | |
4026 | struct stream *s; | |
4027 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4028 | ||
4029 | /* Check socket. */ | |
4030 | if (!zclient || zclient->sock < 0) | |
4031 | return; | |
4032 | ||
4033 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4034 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4035 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4036 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4037 | add ? "adding" : "deleting", nh->nh_str); | |
4038 | return; | |
4039 | } | |
4040 | ||
4041 | s = zclient->obuf; | |
4042 | stream_reset(s); | |
4043 | ||
4044 | zclient_create_header( | |
4045 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4046 | bgp_vrf->vrf_id); | |
4047 | stream_putl(s, bgp_vrf->vrf_id); | |
4048 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4049 | if (add) | |
4050 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4051 | ||
4052 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4053 | ||
4054 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4055 | if (add) | |
4056 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
4057 | nh->bgp_vrf->name, nh->nh_str, &nh->rmac); | |
4058 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4059 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
4060 | nh->bgp_vrf->name, nh->nh_str); | |
4061 | } | |
4062 | ||
4063 | zclient_send_message(zclient); | |
4064 | } | |
4065 | ||
4066 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4067 | { | |
4068 | if (add && !is_zero_mac(&nh->rmac)) { | |
4069 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4070 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4071 | } else { | |
4072 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4073 | return; | |
4074 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4075 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4076 | } | |
4077 | } | |
4078 | ||
4079 | static void *bgp_evpn_nh_alloc(void *p) | |
4080 | { | |
4081 | struct bgp_evpn_nh *tmp_n = p; | |
4082 | struct bgp_evpn_nh *n; | |
4083 | ||
4084 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4085 | *n = *tmp_n; | |
4086 | ||
4087 | return ((void *)n); | |
4088 | } | |
4089 | ||
4090 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4091 | struct ipaddr *ip) | |
4092 | { | |
4093 | struct bgp_evpn_nh tmp; | |
4094 | struct bgp_evpn_nh *n; | |
4095 | ||
4096 | memset(&tmp, 0, sizeof(tmp)); | |
4097 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4098 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4099 | ||
4100 | return n; | |
4101 | } | |
4102 | ||
4103 | /* Add nexthop entry - implicitly created on first path reference */ | |
4104 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4105 | struct ipaddr *ip, | |
4106 | struct bgp_path_info *pi) | |
4107 | { | |
4108 | struct bgp_evpn_nh tmp_n; | |
4109 | struct bgp_evpn_nh *n = NULL; | |
4110 | ||
4111 | memset(&tmp_n, 0, sizeof(struct bgp_evpn_nh)); | |
4112 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
4113 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4114 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4115 | n->bgp_vrf = bgp_vrf; | |
4116 | ||
4117 | n->pi_list = list_new(); | |
4118 | listset_app_node_mem(n->pi_list); | |
4119 | ||
4120 | /* Setup ref_pi when the nh is created */ | |
4121 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4122 | n->ref_pi = pi; | |
4123 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4124 | } | |
4125 | ||
4126 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4127 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", n->bgp_vrf->name, | |
4128 | n->nh_str, &n->rmac); | |
4129 | bgp_evpn_nh_zebra_update(n, true); | |
4130 | return n; | |
4131 | } | |
4132 | ||
4133 | /* Delete nexthop entry if there are no paths referencing it */ | |
4134 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4135 | { | |
4136 | struct bgp_evpn_nh *tmp_n; | |
4137 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4138 | ||
4139 | if (listcount(n->pi_list)) | |
4140 | return; | |
4141 | ||
4142 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4143 | zlog_debug("evpn vrf %s nh %s del to zebra", bgp_vrf->name, | |
4144 | n->nh_str); | |
4145 | ||
4146 | bgp_evpn_nh_zebra_update(n, false); | |
4147 | list_delete(&n->pi_list); | |
4148 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4149 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4150 | } | |
4151 | ||
4152 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) | |
4153 | { | |
4154 | const struct bgp_evpn_nh *n = p; | |
4155 | const struct ipaddr *ip = &n->ip; | |
4156 | ||
4157 | if (IS_IPADDR_V4(ip)) | |
4158 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4159 | ||
4160 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4161 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4162 | } | |
4163 | ||
4164 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4165 | { | |
4166 | const struct bgp_evpn_nh *n1 = p1; | |
4167 | const struct bgp_evpn_nh *n2 = p2; | |
4168 | ||
4169 | if (n1 == NULL && n2 == NULL) | |
4170 | return true; | |
4171 | ||
4172 | if (n1 == NULL || n2 == NULL) | |
4173 | return false; | |
4174 | ||
4175 | return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0); | |
4176 | } | |
4177 | ||
4178 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4179 | { | |
4180 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4181 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name); | |
4182 | bgp_vrf->evpn_nh_table = hash_create( | |
4183 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4184 | } | |
4185 | ||
4186 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4187 | { | |
4188 | struct listnode *node; | |
4189 | struct listnode *nnode; | |
4190 | struct bgp_path_evpn_nh_info *nh_info; | |
4191 | ||
4192 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4193 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name, | |
4194 | nh->nh_str); | |
4195 | ||
4196 | /* force flush paths */ | |
4197 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4198 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4199 | } | |
4200 | ||
4201 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4202 | { | |
4203 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4204 | ||
4205 | bgp_evpn_nh_flush_entry(nh); | |
4206 | } | |
4207 | ||
4208 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4209 | { | |
4210 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4211 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name); | |
4212 | hash_iterate( | |
4213 | bgp_vrf->evpn_nh_table, | |
4214 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4215 | NULL); | |
4216 | hash_free(bgp_vrf->evpn_nh_table); | |
4217 | bgp_vrf->evpn_nh_table = NULL; | |
4218 | } | |
4219 | ||
4220 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4221 | { | |
4222 | struct listnode *node; | |
4223 | struct bgp_path_info *pi; | |
4224 | struct bgp_path_evpn_nh_info *nh_info; | |
4225 | ||
4226 | if (nh->ref_pi) | |
4227 | return; | |
4228 | ||
4229 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4230 | pi = nh_info->pi; | |
4231 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4232 | continue; | |
4233 | ||
4234 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4235 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
4236 | nh->bgp_vrf->name, nh->nh_str); | |
4237 | nh->ref_pi = pi; | |
4238 | /* If we have a new pi copy rmac from it and update | |
4239 | * zebra if the new rmac is different | |
4240 | */ | |
4241 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4242 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4243 | bgp_evpn_nh_zebra_update(nh, true); | |
4244 | } | |
4245 | break; | |
4246 | } | |
4247 | } | |
4248 | ||
4249 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4250 | struct bgp_path_info *pi) | |
4251 | { | |
4252 | if (nh->ref_pi != pi) | |
4253 | return; | |
4254 | ||
4255 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4256 | zlog_debug("evpn vrf %s nh %s ref_pi clear", nh->bgp_vrf->name, | |
4257 | nh->nh_str); | |
4258 | nh->ref_pi = NULL; | |
4259 | /* try to find another ref_pi */ | |
4260 | bgp_evpn_nh_update_ref_pi(nh); | |
4261 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4262 | if (!nh->ref_pi) { | |
4263 | memset(&nh->rmac, 0, ETH_ALEN); | |
4264 | bgp_evpn_nh_zebra_update(nh, true); | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4269 | { | |
4270 | bgp_evpn_path_nh_unlink(nh_info); | |
4271 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4272 | } | |
4273 | ||
4274 | static struct bgp_path_evpn_nh_info * | |
4275 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4276 | { | |
4277 | struct bgp_path_info_extra *e; | |
4278 | struct bgp_path_mh_info *mh_info; | |
4279 | struct bgp_path_evpn_nh_info *nh_info; | |
4280 | ||
4281 | e = bgp_path_info_extra_get(pi); | |
4282 | ||
4283 | /* If mh_info doesn't exist allocate it */ | |
4284 | mh_info = e->mh_info; | |
4285 | if (!mh_info) | |
4286 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4287 | sizeof(struct bgp_path_mh_info)); | |
4288 | ||
4289 | /* If nh_info doesn't exist allocate it */ | |
4290 | nh_info = mh_info->nh_info; | |
4291 | if (!nh_info) { | |
4292 | mh_info->nh_info = nh_info = | |
4293 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4294 | sizeof(struct bgp_path_evpn_nh_info)); | |
4295 | nh_info->pi = pi; | |
4296 | } | |
4297 | ||
4298 | return nh_info; | |
4299 | } | |
4300 | ||
4301 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4302 | { | |
4303 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4304 | struct bgp_path_info *pi; | |
4305 | char prefix_buf[PREFIX_STRLEN]; | |
4306 | ||
4307 | if (!nh) | |
4308 | return; | |
4309 | ||
4310 | pi = nh_info->pi; | |
4311 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4312 | zlog_debug("path %s unlinked from nh %s %s", | |
4313 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4314 | sizeof(prefix_buf)) | |
4315 | : "", | |
4316 | nh->bgp_vrf->name, nh->nh_str); | |
4317 | ||
4318 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4319 | ||
4320 | nh_info->nh = NULL; | |
4321 | ||
4322 | /* check if the ref_pi need to be updated */ | |
4323 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4324 | ||
4325 | /* if there are no other references against the nh it | |
4326 | * needs to be freed | |
4327 | */ | |
4328 | bgp_evpn_nh_del(nh); | |
4329 | ||
4330 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4331 | * along with the path. | |
4332 | */ | |
4333 | } | |
4334 | ||
4335 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4336 | { | |
4337 | struct bgp_path_evpn_nh_info *nh_info; | |
4338 | struct bgp_evpn_nh *nh; | |
4339 | char prefix_buf[PREFIX_STRLEN]; | |
4340 | struct ipaddr ip; | |
4341 | ||
4342 | /* EVPN nexthop setup in bgp has been turned off */ | |
4343 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4344 | return; | |
4345 | ||
4346 | if (!bgp_vrf->evpn_nh_table) { | |
4347 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4348 | zlog_debug("path %s linked to vrf %s failed", | |
4349 | prefix2str(&pi->net->p, prefix_buf, | |
4350 | sizeof(prefix_buf)), | |
4351 | bgp_vrf->name); | |
4352 | return; | |
4353 | } | |
4354 | ||
4355 | nh_info = (pi->extra && pi->extra->mh_info) | |
4356 | ? pi->extra->mh_info->nh_info | |
4357 | : NULL; | |
4358 | ||
4359 | /* if NHG is not being used for this path we don't need to manage the | |
4360 | * nexthops in bgp (they are managed by zebra instead) | |
4361 | */ | |
4362 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4363 | if (nh_info) | |
4364 | bgp_evpn_path_nh_unlink(nh_info); | |
4365 | return; | |
4366 | } | |
4367 | ||
4368 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4369 | if (!nh_info) | |
4370 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4371 | ||
4372 | /* find-create nh */ | |
4373 | memset(&ip, 0, sizeof(ip)); | |
4374 | if (pi->net->p.family == AF_INET6) { | |
4375 | SET_IPADDR_V6(&ip); | |
4376 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4377 | sizeof(ip.ipaddr_v6)); | |
4378 | } else { | |
4379 | SET_IPADDR_V4(&ip); | |
4380 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4381 | } | |
4382 | ||
4383 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4384 | if (!nh) | |
4385 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4386 | ||
4387 | /* dup check */ | |
4388 | if (nh_info->nh == nh) { | |
4389 | /* Check if any of the paths are now valid */ | |
4390 | bgp_evpn_nh_update_ref_pi(nh); | |
4391 | return; | |
4392 | } | |
4393 | ||
4394 | /* unlink old nh if any */ | |
4395 | bgp_evpn_path_nh_unlink(nh_info); | |
4396 | ||
4397 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4398 | zlog_debug( | |
4399 | "path %s linked to nh %s %s", | |
4400 | prefix2str(&pi->net->p, prefix_buf, sizeof(prefix_buf)), | |
4401 | nh->bgp_vrf->name, nh->nh_str); | |
4402 | ||
4403 | /* link mac-ip path to the new nh */ | |
4404 | nh_info->nh = nh; | |
4405 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4406 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4407 | /* If a new valid path got linked to the nh see if can get the rmac | |
4408 | * from it | |
4409 | */ | |
4410 | bgp_evpn_nh_update_ref_pi(nh); | |
4411 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4412 | if (!nh->ref_pi) | |
4413 | zlog_debug( | |
4414 | "path %s linked to nh %s %s with no valid pi", | |
4415 | prefix2str(&pi->net->p, prefix_buf, | |
4416 | sizeof(prefix_buf)), | |
4417 | nh->bgp_vrf->name, nh->nh_str); | |
4418 | } | |
4419 | } | |
4420 | ||
4421 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4422 | { | |
4423 | struct bgp_path_evpn_nh_info *nh_info; | |
4424 | ||
4425 | nh_info = (pi->extra && pi->extra->mh_info) | |
4426 | ? pi->extra->mh_info->nh_info | |
4427 | : NULL; | |
4428 | ||
4429 | if (!nh_info) | |
4430 | return; | |
4431 | ||
4432 | bgp_evpn_path_nh_unlink(nh_info); | |
4433 | } | |
4434 | ||
4435 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4436 | { | |
4437 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4438 | } | |
4439 | ||
4440 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4441 | json_object *json_array) | |
4442 | { | |
4443 | json_object *json = NULL; | |
4444 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4445 | char prefix_buf[PREFIX_STRLEN]; | |
4446 | ||
4447 | if (json_array) | |
4448 | /* create a separate json object for each ES */ | |
4449 | json = json_object_new_object(); | |
4450 | ||
4451 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4452 | if (nh->ref_pi && nh->ref_pi->net) | |
4453 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4454 | else | |
4455 | prefix_buf[0] = '\0'; | |
4456 | if (json) { | |
4457 | json_object_string_add(json, "vrf", nh->bgp_vrf->name); | |
4458 | json_object_string_add(json, "ip", nh->nh_str); | |
4459 | json_object_string_add(json, "rmac", mac_buf); | |
4460 | json_object_string_add(json, "basePath", prefix_buf); | |
4461 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4462 | } else { | |
4463 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", nh->bgp_vrf->name, | |
4464 | nh->nh_str, mac_buf, listcount(nh->pi_list), | |
4465 | prefix_buf); | |
4466 | } | |
4467 | ||
4468 | /* add ES to the json array */ | |
4469 | if (json_array) | |
4470 | json_object_array_add(json_array, json); | |
4471 | } | |
4472 | ||
4473 | struct nh_show_ctx { | |
4474 | struct vty *vty; | |
4475 | json_object *json; | |
4476 | }; | |
4477 | ||
4478 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4479 | { | |
4480 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4481 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4482 | ||
4483 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4484 | } | |
4485 | ||
4486 | /* Display all evpn nexthops */ | |
4487 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4488 | { | |
4489 | json_object *json_array = NULL; | |
4490 | struct bgp *bgp_vrf; | |
4491 | struct listnode *node; | |
4492 | struct nh_show_ctx wctx; | |
4493 | ||
4494 | if (uj) { | |
4495 | /* create an array of nexthops */ | |
4496 | json_array = json_object_new_array(); | |
4497 | } else { | |
4498 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4499 | "RMAC", "#Paths", "Base Path"); | |
4500 | } | |
4501 | ||
4502 | wctx.vty = vty; | |
4503 | wctx.json = json_array; | |
4504 | ||
4505 | /* walk through all vrfs */ | |
4506 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4507 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4508 | (void (*)(struct hash_bucket *, | |
4509 | void *))bgp_evpn_nh_show_hash_cb, | |
4510 | &wctx); | |
4511 | } | |
4512 | ||
4513 | /* print the array of json-ESs */ | |
4514 | if (uj) { | |
4515 | vty_out(vty, "%s\n", | |
4516 | json_object_to_json_string_ext( | |
4517 | json_array, JSON_C_TO_STRING_PRETTY)); | |
4518 | json_object_free(json_array); | |
4519 | } | |
4520 | } | |
4521 | ||
c44ab6f1 AK |
4522 | /*****************************************************************************/ |
4523 | void bgp_evpn_mh_init(void) | |
4524 | { | |
4525 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4526 | ||
4527 | /* setup ES tables */ | |
4528 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4529 | /* local ES list */ | |
4530 | bgp_mh_info->local_es_list = list_new(); | |
4531 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4532 | /* list of ESs with pending processing */ | |
4533 | bgp_mh_info->pend_es_list = list_new(); | |
4534 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4535 | ||
fe8293c3 AK |
4536 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4537 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
4538 | ||
c44ab6f1 AK |
4539 | /* config knobs - XXX add cli to control it */ |
4540 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4541 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
4542 | bgp_mh_info->install_l3nhg = false; |
4543 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 4544 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4545 | bgp_mh_info->bgp_evpn_nh_setup = true; |
c44ab6f1 | 4546 | |
c44ab6f1 AK |
4547 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4548 | } | |
4549 | ||
4550 | void bgp_evpn_mh_finish(void) | |
4551 | { | |
4552 | struct bgp_evpn_es *es; | |
4553 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4554 | |
45a859f1 AK |
4555 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4556 | zlog_debug("evpn mh finish"); | |
4557 | ||
4558 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4559 | es_next) { | |
4560 | bgp_evpn_es_local_info_clear(es); | |
c44ab6f1 | 4561 | } |
8fc2ffb3 AK |
4562 | if (bgp_mh_info->t_cons_check) |
4563 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4564 | list_delete(&bgp_mh_info->local_es_list); |
4565 | list_delete(&bgp_mh_info->pend_es_list); | |
4566 | ||
4567 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4568 | } | |
acd1d9bc AD |
4569 | |
4570 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4571 | void bgp_evpn_switch_ead_evi_rx(void) | |
4572 | { | |
4573 | struct bgp *bgp; | |
4574 | struct bgp_evpn_es *es; | |
4575 | struct bgp_evpn_es_evi *es_evi; | |
4576 | struct listnode *evi_node = NULL; | |
4577 | struct listnode *evi_next = NULL; | |
4578 | struct bgp_evpn_es_evi_vtep *vtep; | |
4579 | struct listnode *vtep_node = NULL; | |
4580 | struct listnode *vtep_next = NULL; | |
4581 | ||
4582 | bgp = bgp_get_evpn(); | |
4583 | if (!bgp) | |
4584 | return; | |
4585 | ||
4586 | /* | |
4587 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4588 | * is active. | |
4589 | */ | |
4590 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4591 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4592 | continue; | |
4593 | ||
4594 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4595 | es_evi)) { | |
4596 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4597 | continue; | |
4598 | ||
4599 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4600 | vtep_node, vtep_next, vtep)) | |
4601 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4602 | } | |
4603 | } | |
4604 | } |