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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); |
74efb822 AK |
74 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, |
75 | bool is_local); | |
c44ab6f1 AK |
76 | |
77 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
8fc2ffb3 | 78 | static int bgp_evpn_run_consistency_checks(struct thread *t); |
090efa2f AK |
79 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info); |
80 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info); | |
c44ab6f1 AK |
81 | |
82 | /****************************************************************************** | |
83 | * per-ES (Ethernet Segment) routing table | |
84 | * | |
85 | * Following routes are added to the ES's routing table - | |
86 | * 1. Local and remote ESR (Type-4) | |
87 | * 2. Local EAD-per-ES (Type-1). | |
88 | * | |
89 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
90 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
91 | * being added to same ES). | |
92 | * | |
93 | * Note the following routes go into the VNI routing table (instead of the | |
94 | * ES routing table) - | |
95 | * 1. Remote EAD-per-ES | |
96 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 97 | */ |
185fb14a | 98 | |
c44ab6f1 AK |
99 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
100 | * installed in the ES's routing table. | |
185fb14a | 101 | */ |
c44ab6f1 | 102 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
103 | struct bgp_evpn_es *es, |
104 | struct bgp_dest *dest) | |
185fb14a AK |
105 | { |
106 | int ret = 0; | |
107 | afi_t afi = AFI_L2VPN; | |
108 | safi_t safi = SAFI_EVPN; | |
109 | struct bgp_path_info *old_select; /* old best */ | |
110 | struct bgp_path_info *new_select; /* new best */ | |
111 | struct bgp_path_info_pair old_and_new; | |
112 | ||
113 | /* Compute the best path. */ | |
09319b4e DS |
114 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
115 | afi, safi); | |
185fb14a AK |
116 | old_select = old_and_new.old; |
117 | new_select = old_and_new.new; | |
118 | ||
119 | /* | |
120 | * If the best path hasn't changed - see if something needs to be | |
121 | * updated | |
122 | */ | |
123 | if (old_select && old_select == new_select | |
09319b4e DS |
124 | && old_select->type == ZEBRA_ROUTE_BGP |
125 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
126 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
127 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
128 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 129 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
130 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
131 | true /*esr*/, | |
132 | old_select->attr->df_alg, | |
133 | old_select->attr->df_pref); | |
185fb14a AK |
134 | } |
135 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 136 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
137 | return ret; |
138 | } | |
139 | ||
140 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 141 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 142 | |
c44ab6f1 | 143 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
144 | * into the zebra RIB. |
145 | */ | |
146 | if (old_select || new_select) | |
09319b4e | 147 | bgp_bump_version(dest); |
185fb14a AK |
148 | |
149 | if (old_select) | |
09319b4e | 150 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 151 | if (new_select) { |
09319b4e DS |
152 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
153 | bgp_path_info_unset_flag(dest, new_select, | |
154 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
155 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
156 | } | |
157 | ||
158 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 159 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
160 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
161 | true /*esr */, new_select->attr->df_alg, | |
162 | new_select->attr->df_pref); | |
185fb14a AK |
163 | } else { |
164 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
165 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
166 | bgp_evpn_es_vtep_del( | |
167 | bgp, es, old_select->attr->nexthop, | |
168 | true /*esr*/); | |
185fb14a AK |
169 | } |
170 | ||
171 | /* Clear any route change flags. */ | |
09319b4e | 172 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
173 | |
174 | /* Reap old select bgp_path_info, if it has been removed */ | |
175 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 176 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
177 | |
178 | return ret; | |
179 | } | |
180 | ||
c44ab6f1 AK |
181 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
182 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
183 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
184 | struct bgp_path_info *parent_pi) | |
185 | { | |
186 | int ret = 0; | |
09319b4e | 187 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
188 | struct bgp_path_info *pi = NULL; |
189 | struct attr *attr_new = NULL; | |
190 | ||
191 | /* Create (or fetch) route within the VNI. | |
192 | * NOTE: There is no RD here. | |
193 | */ | |
09319b4e | 194 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
195 | |
196 | /* Check if route entry is already present. */ | |
09319b4e | 197 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
198 | if (pi->extra |
199 | && (struct bgp_path_info *)pi->extra->parent == | |
200 | parent_pi) | |
201 | break; | |
202 | ||
203 | if (!pi) { | |
204 | /* Add (or update) attribute to hash. */ | |
205 | attr_new = bgp_attr_intern(parent_pi->attr); | |
206 | ||
207 | /* Create new route with its attribute. */ | |
208 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 209 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
210 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
211 | bgp_path_info_extra_get(pi); | |
212 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
213 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
214 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
215 | } else { |
216 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
217 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 218 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
219 | return 0; |
220 | } | |
221 | /* The attribute has changed. */ | |
222 | /* Add (or update) attribute to hash. */ | |
223 | attr_new = bgp_attr_intern(parent_pi->attr); | |
224 | ||
225 | /* Restore route, if needed. */ | |
226 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 227 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
228 | |
229 | /* Mark if nexthop has changed. */ | |
230 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
231 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
232 | ||
233 | /* Unintern existing, set to new. */ | |
234 | bgp_attr_unintern(&pi->attr); | |
235 | pi->attr = attr_new; | |
236 | pi->uptime = bgp_clock(); | |
237 | } | |
238 | ||
239 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 240 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 241 | |
09319b4e | 242 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
243 | |
244 | return ret; | |
245 | } | |
246 | ||
247 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
248 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
249 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
250 | { | |
251 | int ret; | |
09319b4e | 252 | struct bgp_dest *dest; |
c44ab6f1 AK |
253 | struct bgp_path_info *pi; |
254 | ||
255 | if (!es->route_table) | |
256 | return 0; | |
257 | ||
258 | /* Locate route within the ESI. | |
259 | * NOTE: There is no RD here. | |
260 | */ | |
09319b4e DS |
261 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
262 | if (!dest) | |
c44ab6f1 AK |
263 | return 0; |
264 | ||
265 | /* Find matching route entry. */ | |
09319b4e | 266 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
267 | if (pi->extra |
268 | && (struct bgp_path_info *)pi->extra->parent == | |
269 | parent_pi) | |
270 | break; | |
271 | ||
272 | if (!pi) | |
273 | return 0; | |
274 | ||
275 | /* Mark entry for deletion */ | |
09319b4e | 276 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
277 | |
278 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 279 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
280 | |
281 | /* Unlock route node. */ | |
09319b4e | 282 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
283 | |
284 | return ret; | |
285 | } | |
286 | ||
287 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
288 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
289 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
290 | struct bgp_path_info *pi, int install) | |
291 | { | |
292 | int ret = 0; | |
293 | ||
294 | if (install) | |
295 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
296 | else | |
297 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
298 | ||
299 | if (ret) { | |
300 | flog_err( | |
301 | EC_BGP_EVPN_FAIL, | |
302 | "%u: Failed to %s EVPN %s route in ESI %s", | |
303 | bgp->vrf_id, | |
304 | install ? "install" : "uninstall", | |
305 | "ES", es->esi_str); | |
306 | return ret; | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
311 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
312 | * Also remove all remote routes from the per ES table. Invoked when ES | |
313 | * is deleted. | |
185fb14a | 314 | */ |
c44ab6f1 AK |
315 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
316 | { | |
09319b4e | 317 | struct bgp_dest *dest; |
c44ab6f1 AK |
318 | struct bgp_path_info *pi, *nextpi; |
319 | ||
320 | /* de-activate the ES */ | |
321 | bgp_evpn_local_es_down(bgp, es); | |
322 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
323 | ||
324 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
325 | for (dest = bgp_table_top(es->route_table); dest; |
326 | dest = bgp_route_next(dest)) { | |
327 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
328 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
329 | bgp_path_info_delete(dest, pi); | |
330 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
331 | } |
332 | } | |
333 | } | |
334 | ||
335 | /***************************************************************************** | |
336 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
337 | * segment updates. | |
338 | */ | |
339 | ||
340 | /* create or update local EVPN type1/type4 route entry. | |
341 | * | |
342 | * This could be in - | |
343 | * the ES table if ESR/EAD-ES (or) | |
344 | * the VNI table if EAD-EVI (or) | |
345 | * the global table if ESR/EAD-ES/EAD-EVI | |
346 | * | |
347 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
348 | * ESR). | |
349 | */ | |
09319b4e DS |
350 | static int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
351 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
352 | struct bgp_dest *dest, struct attr *attr, | |
353 | int add, struct bgp_path_info **ri, | |
354 | int *route_changed) | |
185fb14a | 355 | { |
185fb14a AK |
356 | struct bgp_path_info *tmp_pi = NULL; |
357 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
358 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
359 | struct attr *attr_new = NULL; | |
c44ab6f1 | 360 | struct prefix_evpn *evp; |
185fb14a AK |
361 | |
362 | *ri = NULL; | |
752eed47 | 363 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 364 | *route_changed = 1; |
185fb14a AK |
365 | |
366 | /* locate the local and remote entries if any */ | |
09319b4e | 367 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
368 | tmp_pi = tmp_pi->next) { |
369 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
370 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
371 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
372 | local_pi = tmp_pi; |
373 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
374 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
375 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
376 | remote_pi = tmp_pi; |
377 | } | |
378 | ||
c44ab6f1 AK |
379 | /* we don't expect to see a remote_ri at this point as |
380 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
381 | * in the VNI-rt-table. | |
185fb14a AK |
382 | */ |
383 | if (remote_pi) { | |
384 | flog_err( | |
23d0a753 DA |
385 | EC_BGP_ES_INVALID, |
386 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
387 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a AK |
388 | return -1; |
389 | } | |
390 | ||
391 | if (!local_pi && !add) | |
392 | return 0; | |
393 | ||
394 | /* create or update the entry */ | |
395 | if (!local_pi) { | |
396 | ||
397 | /* Add or update attribute to hash */ | |
398 | attr_new = bgp_attr_intern(attr); | |
399 | ||
400 | /* Create new route with its attribute. */ | |
401 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 402 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
403 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
404 | ||
c44ab6f1 AK |
405 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
406 | bgp_path_info_extra_get(tmp_pi); | |
407 | tmp_pi->extra->num_labels = 1; | |
408 | if (vpn) | |
409 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
410 | else | |
411 | tmp_pi->extra->label[0] = 0; | |
412 | } | |
413 | ||
185fb14a | 414 | /* add the newly created path to the route-node */ |
09319b4e | 415 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
416 | } else { |
417 | tmp_pi = local_pi; | |
418 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 419 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
420 | *route_changed = 0; |
421 | else { | |
422 | /* The attribute has changed. | |
423 | * Add (or update) attribute to hash. | |
424 | */ | |
425 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
426 | bgp_path_info_set_flag(dest, tmp_pi, |
427 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
428 | |
429 | /* Restore route, if needed. */ | |
430 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 431 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
432 | |
433 | /* Unintern existing, set to new. */ | |
434 | bgp_attr_unintern(&tmp_pi->attr); | |
435 | tmp_pi->attr = attr_new; | |
436 | tmp_pi->uptime = bgp_clock(); | |
437 | } | |
438 | } | |
439 | ||
c44ab6f1 AK |
440 | if (*route_changed) { |
441 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
442 | zlog_debug( |
443 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
444 | es->esi_str, vpn ? vpn->vni : 0, | |
445 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
446 | ? "esr" | |
447 | : (vpn ? "ead-evi" : "ead-es"), | |
448 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
449 | } |
450 | ||
185fb14a AK |
451 | /* Return back the route entry. */ |
452 | *ri = tmp_pi; | |
453 | return 0; | |
454 | } | |
455 | ||
c44ab6f1 AK |
456 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
457 | * | |
458 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
459 | * ESR). | |
460 | */ | |
461 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
462 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 463 | { |
185fb14a AK |
464 | afi_t afi = AFI_L2VPN; |
465 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 466 | struct bgp_path_info *pi; |
09319b4e DS |
467 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
468 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
469 | struct bgp_table *rt_table; |
470 | struct prefix_rd *prd; | |
185fb14a | 471 | |
c44ab6f1 AK |
472 | if (vpn) { |
473 | rt_table = vpn->route_table; | |
474 | prd = &vpn->prd; | |
475 | } else { | |
476 | rt_table = es->route_table; | |
477 | prd = &es->prd; | |
478 | } | |
185fb14a | 479 | |
c44ab6f1 AK |
480 | /* First, locate the route node within the ESI or VNI. |
481 | * If it doesn't exist, ther is nothing to do. | |
482 | * Note: there is no RD here. | |
483 | */ | |
09319b4e DS |
484 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
485 | if (!dest) | |
c44ab6f1 | 486 | return 0; |
185fb14a | 487 | |
c44ab6f1 | 488 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
489 | zlog_debug( |
490 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
491 | es->esi_str, vpn ? vpn->vni : 0, | |
492 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
493 | ? "esr" | |
494 | : (vpn ? "ead-evi" : "ead-es"), | |
495 | &es->originator_ip); | |
185fb14a | 496 | |
c44ab6f1 AK |
497 | /* Next, locate route node in the global EVPN routing table. |
498 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
499 | */ | |
09319b4e DS |
500 | global_dest = |
501 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
502 | (const struct prefix_evpn *)p, prd); | |
503 | if (global_dest) { | |
185fb14a | 504 | |
c44ab6f1 | 505 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 506 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
507 | |
508 | /* Schedule for processing - withdraws to peers happen from | |
509 | * this table. | |
510 | */ | |
511 | if (pi) | |
09319b4e DS |
512 | bgp_process(bgp, global_dest, afi, safi); |
513 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
514 | } |
515 | ||
516 | /* | |
c44ab6f1 | 517 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
518 | * This can just be removed. |
519 | */ | |
09319b4e | 520 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 521 | if (pi) |
09319b4e DS |
522 | bgp_path_info_reap(dest, pi); |
523 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
524 | return 0; |
525 | } | |
526 | ||
c44ab6f1 AK |
527 | /***************************************************************************** |
528 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
529 | * ESRs are used for DF election. Currently service-carving described in |
530 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
531 | * used by default. | |
532 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 533 | */ |
c44ab6f1 AK |
534 | /* Build extended community for EVPN ES (type-4) route */ |
535 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
536 | struct attr *attr) | |
185fb14a | 537 | { |
c44ab6f1 AK |
538 | struct ecommunity ecom_encap; |
539 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 540 | struct ecommunity ecom_df; |
c44ab6f1 AK |
541 | struct ecommunity_val eval; |
542 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 543 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
544 | bgp_encap_types tnl_type; |
545 | struct ethaddr mac; | |
185fb14a | 546 | |
c44ab6f1 AK |
547 | /* Encap */ |
548 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
549 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
550 | encode_encap_extcomm(tnl_type, &eval); | |
551 | ecom_encap.size = 1; | |
34540b0d | 552 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
553 | ecom_encap.val = (uint8_t *)eval.val; |
554 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 555 | |
c44ab6f1 AK |
556 | /* ES import RT */ |
557 | memset(&mac, 0, sizeof(struct ethaddr)); | |
558 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
559 | es_get_system_mac(&es->esi, &mac); | |
560 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
561 | ecom_es_rt.size = 1; | |
34540b0d | 562 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
563 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
564 | attr->ecommunity = | |
565 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 566 | |
74e2bd89 AK |
567 | /* DF election extended community */ |
568 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
569 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
570 | ecom_df.size = 1; | |
571 | ecom_df.val = (uint8_t *)eval_df.val; | |
572 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
573 | ||
c44ab6f1 | 574 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
575 | } |
576 | ||
c44ab6f1 AK |
577 | /* Create or update local type-4 route */ |
578 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
579 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
580 | { |
581 | int ret = 0; | |
c44ab6f1 AK |
582 | int route_changed = 0; |
583 | afi_t afi = AFI_L2VPN; | |
584 | safi_t safi = SAFI_EVPN; | |
585 | struct attr attr; | |
586 | struct attr *attr_new = NULL; | |
09319b4e | 587 | struct bgp_dest *dest = NULL; |
185fb14a | 588 | struct bgp_path_info *pi = NULL; |
185fb14a | 589 | |
c44ab6f1 AK |
590 | memset(&attr, 0, sizeof(struct attr)); |
591 | ||
592 | /* Build path-attribute for this route. */ | |
593 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
594 | attr.nexthop = es->originator_ip; | |
595 | attr.mp_nexthop_global_in = es->originator_ip; | |
596 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
597 | ||
598 | /* Set up extended community. */ | |
599 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
600 | ||
601 | /* First, create (or fetch) route node within the ESI. */ | |
602 | /* NOTE: There is no RD here. */ | |
09319b4e | 603 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 604 | |
c44ab6f1 | 605 | /* Create or update route entry. */ |
09319b4e DS |
606 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
607 | &pi, &route_changed); | |
ec779825 | 608 | if (ret != 0) |
23d0a753 DA |
609 | flog_err( |
610 | EC_BGP_ES_INVALID, | |
611 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
612 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 613 | |
c44ab6f1 AK |
614 | assert(pi); |
615 | attr_new = pi->attr; | |
185fb14a | 616 | |
c44ab6f1 AK |
617 | /* Perform route selection; |
618 | * this is just to set the flags correctly | |
619 | * as local route in the ES always wins. | |
620 | */ | |
09319b4e DS |
621 | bgp_evpn_es_route_select_install(bgp, es, dest); |
622 | bgp_dest_unlock_node(dest); | |
185fb14a | 623 | |
c44ab6f1 AK |
624 | /* If this is a new route or some attribute has changed, export the |
625 | * route to the global table. The route will be advertised to peers | |
626 | * from there. Note that this table is a 2-level tree (RD-level + | |
627 | * Prefix-level) similar to L3VPN routes. | |
628 | */ | |
629 | if (route_changed) { | |
630 | struct bgp_path_info *global_pi; | |
185fb14a | 631 | |
09319b4e DS |
632 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
633 | p, &es->prd); | |
634 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
635 | attr_new, 1, &global_pi, | |
636 | &route_changed); | |
185fb14a | 637 | |
c44ab6f1 | 638 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
639 | bgp_process(bgp, dest, afi, safi); |
640 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
641 | } |
642 | ||
c44ab6f1 AK |
643 | /* Unintern temporary. */ |
644 | aspath_unintern(&attr.aspath); | |
645 | return 0; | |
185fb14a AK |
646 | } |
647 | ||
c44ab6f1 AK |
648 | /* Delete local type-4 route */ |
649 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
650 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 651 | { |
c44ab6f1 AK |
652 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
653 | } | |
185fb14a | 654 | |
c44ab6f1 AK |
655 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
656 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
657 | struct attr *attr, uint8_t *pfx, int psize, | |
658 | uint32_t addpath_id) | |
659 | { | |
660 | int ret; | |
661 | esi_t esi; | |
662 | uint8_t ipaddr_len; | |
663 | struct in_addr vtep_ip; | |
664 | struct prefix_rd prd; | |
665 | struct prefix_evpn p; | |
185fb14a | 666 | |
c44ab6f1 AK |
667 | /* Type-4 route should be either 23 or 35 bytes |
668 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 669 | */ |
c44ab6f1 AK |
670 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
671 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
672 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
673 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
674 | peer->bgp->vrf_id, peer->host, psize); | |
675 | return -1; | |
676 | } | |
185fb14a | 677 | |
c44ab6f1 AK |
678 | /* Make prefix_rd */ |
679 | prd.family = AF_UNSPEC; | |
680 | prd.prefixlen = 64; | |
681 | memcpy(&prd.val, pfx, RD_BYTES); | |
682 | pfx += RD_BYTES; | |
185fb14a | 683 | |
c44ab6f1 AK |
684 | /* get the ESI */ |
685 | memcpy(&esi, pfx, ESI_BYTES); | |
686 | pfx += ESI_BYTES; | |
185fb14a | 687 | |
185fb14a | 688 | |
c44ab6f1 AK |
689 | /* Get the IP. */ |
690 | ipaddr_len = *pfx++; | |
691 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
692 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
693 | } else { | |
694 | flog_err( | |
695 | EC_BGP_EVPN_ROUTE_INVALID, | |
696 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
697 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
698 | return -1; | |
699 | } | |
185fb14a | 700 | |
c44ab6f1 AK |
701 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
702 | /* Process the route. */ | |
703 | if (attr) { | |
704 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
705 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
706 | &prd, NULL, 0, 0, NULL); | |
707 | } else { | |
708 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
709 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
710 | &prd, NULL, 0, NULL); | |
711 | } | |
185fb14a AK |
712 | return ret; |
713 | } | |
714 | ||
c44ab6f1 AK |
715 | /* Check if a prefix belongs to the local ES */ |
716 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
717 | struct bgp_evpn_es *es) | |
185fb14a | 718 | { |
c44ab6f1 AK |
719 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
720 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
721 | } |
722 | ||
c44ab6f1 AK |
723 | /* Import remote ESRs on local ethernet segment add */ |
724 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
725 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
726 | { |
727 | int ret; | |
728 | afi_t afi; | |
729 | safi_t safi; | |
09319b4e | 730 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
731 | struct bgp_table *table; |
732 | struct bgp_path_info *pi; | |
733 | ||
734 | afi = AFI_L2VPN; | |
735 | safi = SAFI_EVPN; | |
736 | ||
c44ab6f1 AK |
737 | /* Walk entire global routing table and evaluate routes which could be |
738 | * imported into this Ethernet Segment. | |
185fb14a | 739 | */ |
09319b4e DS |
740 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
741 | rd_dest = bgp_route_next(rd_dest)) { | |
742 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
743 | if (!table) |
744 | continue; | |
745 | ||
09319b4e DS |
746 | for (dest = bgp_table_top(table); dest; |
747 | dest = bgp_route_next(dest)) { | |
748 | struct prefix_evpn *evp = | |
752eed47 | 749 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 750 | |
09319b4e DS |
751 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
752 | pi = pi->next) { | |
185fb14a AK |
753 | /* |
754 | * Consider "valid" remote routes applicable for | |
755 | * this ES. | |
756 | */ | |
757 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
758 | && pi->type == ZEBRA_ROUTE_BGP |
759 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
760 | continue; |
761 | ||
c44ab6f1 | 762 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
763 | continue; |
764 | ||
765 | if (install) | |
c44ab6f1 AK |
766 | ret = bgp_evpn_es_route_install( |
767 | bgp, es, evp, pi); | |
185fb14a | 768 | else |
c44ab6f1 AK |
769 | ret = bgp_evpn_es_route_uninstall( |
770 | bgp, es, evp, pi); | |
185fb14a AK |
771 | |
772 | if (ret) { | |
773 | flog_err( | |
2dbe669b DA |
774 | EC_BGP_EVPN_FAIL, |
775 | "Failed to %s EVPN %pFX route in ESI %s", | |
776 | install ? "install" | |
185fb14a | 777 | : "uninstall", |
2dbe669b | 778 | evp, es->esi_str); |
dc52bece DS |
779 | |
780 | bgp_dest_unlock_node(rd_dest); | |
781 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
782 | return ret; |
783 | } | |
784 | } | |
785 | } | |
786 | } | |
787 | return 0; | |
788 | } | |
789 | ||
c44ab6f1 AK |
790 | /***************************************************************************** |
791 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
792 | * There are two types of EAD routes - | |
793 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
794 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 795 | */ |
185fb14a | 796 | |
c44ab6f1 AK |
797 | /* Extended communities associated with EAD-per-ES */ |
798 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
799 | struct attr *attr) | |
185fb14a | 800 | { |
c44ab6f1 AK |
801 | struct ecommunity ecom_encap; |
802 | struct ecommunity ecom_esi_label; | |
803 | struct ecommunity_val eval; | |
804 | struct ecommunity_val eval_esi_label; | |
805 | bgp_encap_types tnl_type; | |
806 | struct listnode *evi_node, *rt_node; | |
807 | struct ecommunity *ecom; | |
808 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 809 | |
c44ab6f1 AK |
810 | /* Encap */ |
811 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
812 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
813 | encode_encap_extcomm(tnl_type, &eval); | |
814 | ecom_encap.size = 1; | |
34540b0d | 815 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
816 | ecom_encap.val = (uint8_t *)eval.val; |
817 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 818 | |
c44ab6f1 AK |
819 | /* ESI label */ |
820 | encode_esi_label_extcomm(&eval_esi_label, | |
821 | false /*single_active*/); | |
822 | ecom_esi_label.size = 1; | |
34540b0d | 823 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
824 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
825 | attr->ecommunity = | |
826 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
827 | ||
828 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
829 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
830 | * with it. | |
831 | */ | |
832 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
833 | evi_node, es_evi)) { | |
834 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
835 | continue; | |
836 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
837 | rt_node, ecom)) | |
838 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
839 | ecom); | |
840 | } | |
841 | ||
842 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
843 | } | |
844 | ||
845 | /* Extended communities associated with EAD-per-EVI */ | |
846 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
847 | struct bgpevpn *vpn, struct attr *attr) | |
848 | { | |
849 | struct ecommunity ecom_encap; | |
850 | struct ecommunity_val eval; | |
851 | bgp_encap_types tnl_type; | |
852 | struct listnode *rt_node; | |
853 | struct ecommunity *ecom; | |
854 | ||
855 | /* Encap */ | |
856 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
857 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
858 | encode_encap_extcomm(tnl_type, &eval); | |
859 | ecom_encap.size = 1; | |
7659ad68 | 860 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
861 | ecom_encap.val = (uint8_t *)eval.val; |
862 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
863 | ||
864 | /* Add export RTs for the L2-VNI */ | |
865 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
866 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
867 | ||
868 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
869 | } | |
870 | ||
871 | /* Update EVPN EAD (type-1) route - | |
872 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
873 | */ | |
874 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
875 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
876 | struct prefix_evpn *p) | |
877 | { | |
878 | int ret = 0; | |
879 | afi_t afi = AFI_L2VPN; | |
880 | safi_t safi = SAFI_EVPN; | |
881 | struct attr attr; | |
882 | struct attr *attr_new = NULL; | |
09319b4e | 883 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
884 | struct bgp_path_info *pi = NULL; |
885 | int route_changed = 0; | |
886 | struct prefix_rd *global_rd; | |
887 | ||
888 | memset(&attr, 0, sizeof(struct attr)); | |
889 | ||
890 | /* Build path-attribute for this route. */ | |
891 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
892 | attr.nexthop = es->originator_ip; | |
893 | attr.mp_nexthop_global_in = es->originator_ip; | |
894 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
895 | ||
896 | if (vpn) { | |
897 | /* EAD-EVI route update */ | |
898 | /* MPLS label */ | |
899 | vni2label(vpn->vni, &(attr.label)); | |
900 | ||
901 | /* Set up extended community */ | |
902 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
903 | ||
904 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 905 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
906 | |
907 | /* Create or update route entry. */ | |
09319b4e DS |
908 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
909 | &attr, 1, &pi, &route_changed); | |
ec779825 | 910 | if (ret != 0) |
23d0a753 DA |
911 | flog_err( |
912 | EC_BGP_ES_INVALID, | |
913 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
914 | bgp->vrf_id, es->esi_str, vpn->vni, | |
915 | &es->originator_ip); | |
c44ab6f1 AK |
916 | global_rd = &vpn->prd; |
917 | } else { | |
918 | /* EAD-ES route update */ | |
919 | /* MPLS label is 0 for EAD-ES route */ | |
920 | ||
921 | /* Set up extended community */ | |
922 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
923 | ||
924 | /* First, create (or fetch) route node within the ES. */ | |
925 | /* NOTE: There is no RD here. */ | |
926 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 927 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
928 | |
929 | /* Create or update route entry. */ | |
09319b4e DS |
930 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
931 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 932 | if (ret != 0) { |
23d0a753 DA |
933 | flog_err( |
934 | EC_BGP_ES_INVALID, | |
935 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
936 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
937 | } |
938 | global_rd = &es->prd; | |
939 | } | |
940 | ||
941 | ||
942 | assert(pi); | |
943 | attr_new = pi->attr; | |
944 | ||
945 | /* Perform route selection; | |
946 | * this is just to set the flags correctly as local route in | |
947 | * the ES always wins. | |
948 | */ | |
09319b4e DS |
949 | evpn_route_select_install(bgp, vpn, dest); |
950 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
951 | |
952 | /* If this is a new route or some attribute has changed, export the | |
953 | * route to the global table. The route will be advertised to peers | |
954 | * from there. Note that this table is a 2-level tree (RD-level + | |
955 | * Prefix-level) similar to L3VPN routes. | |
956 | */ | |
957 | if (route_changed) { | |
958 | struct bgp_path_info *global_pi; | |
959 | ||
09319b4e DS |
960 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
961 | p, global_rd); | |
962 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
963 | attr_new, 1, &global_pi, | |
964 | &route_changed); | |
c44ab6f1 AK |
965 | |
966 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
967 | bgp_process(bgp, dest, afi, safi); |
968 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
969 | } |
970 | ||
971 | /* Unintern temporary. */ | |
972 | aspath_unintern(&attr.aspath); | |
973 | return 0; | |
974 | } | |
975 | ||
9c49ac74 AD |
976 | /* |
977 | * This function is called when the export RT for a VNI changes. | |
978 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
979 | * table and advertise these routes to peers. | |
980 | */ | |
981 | ||
982 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
983 | { | |
984 | struct prefix_evpn p; | |
985 | struct bgp_evpn_es *es; | |
986 | struct bgp_evpn_es_evi *es_evi; | |
987 | struct bgp_evpn_es_evi *es_evi_next; | |
988 | ||
989 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
990 | &vpn->es_evi_rb_tree, es_evi_next) { | |
991 | es = es_evi->es; | |
992 | ||
993 | /* Update EAD-ES */ | |
994 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
995 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
996 | &es->esi, es->originator_ip); | |
997 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
998 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
999 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
1000 | bgp->vrf_id, es->esi_str, | |
1001 | es_evi->vpn->vni); | |
1002 | } | |
1003 | ||
1004 | /* Update EAD-EVI */ | |
1005 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1006 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1007 | &es->esi, es->originator_ip); | |
1008 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1009 | &p)) | |
1010 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1011 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1012 | bgp->vrf_id, es->esi_str, | |
1013 | es_evi->vpn->vni); | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | ||
c44ab6f1 AK |
1018 | /* Delete local Type-1 route */ |
1019 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1020 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1021 | { | |
1022 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1023 | } | |
1024 | ||
1025 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1026 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1027 | struct prefix_evpn *p) | |
1028 | { | |
1029 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1030 | } | |
1031 | ||
1032 | /* Generate EAD-EVI for all VNIs */ | |
1033 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1034 | struct bgp_evpn_es *es) | |
1035 | { | |
1036 | struct listnode *evi_node; | |
1037 | struct prefix_evpn p; | |
1038 | struct bgp_evpn_es_evi *es_evi; | |
1039 | ||
fe8293c3 AK |
1040 | /* EAD-per-EVI routes have been suppressed */ |
1041 | if (!bgp_mh_info->ead_evi_tx) | |
1042 | return; | |
1043 | ||
c44ab6f1 AK |
1044 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1045 | /* EAD-EVI route add for this ES is already done */ | |
1046 | return; | |
1047 | ||
1048 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1049 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1050 | &es->esi, es->originator_ip); | |
1051 | ||
1052 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1053 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1054 | continue; | |
1055 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1056 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1057 | "%u: Type4 route creation failure for ESI %s", | |
1058 | bgp->vrf_id, es->esi_str); | |
1059 | } | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Withdraw EAD-EVI for all VNIs | |
1064 | */ | |
1065 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1066 | struct bgp_evpn_es *es) | |
1067 | { | |
1068 | struct listnode *evi_node; | |
1069 | struct prefix_evpn p; | |
1070 | struct bgp_evpn_es_evi *es_evi; | |
1071 | ||
1072 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1073 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1074 | /* EAD-EVI route has not been advertised for this ES */ | |
1075 | return; | |
1076 | ||
1077 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1078 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1079 | &es->esi, es->originator_ip); | |
1080 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1081 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1082 | continue; | |
1083 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1084 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1085 | "%u: Type4 route creation failure for ESI %s", | |
1086 | bgp->vrf_id, es->esi_str); | |
1087 | } | |
1088 | } | |
185fb14a AK |
1089 | |
1090 | /* | |
c44ab6f1 | 1091 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1092 | */ |
c44ab6f1 AK |
1093 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1094 | struct attr *attr, uint8_t *pfx, int psize, | |
1095 | uint32_t addpath_id) | |
185fb14a AK |
1096 | { |
1097 | int ret; | |
c44ab6f1 | 1098 | struct prefix_rd prd; |
185fb14a | 1099 | esi_t esi; |
c44ab6f1 AK |
1100 | uint32_t eth_tag; |
1101 | mpls_label_t label; | |
185fb14a | 1102 | struct in_addr vtep_ip; |
185fb14a AK |
1103 | struct prefix_evpn p; |
1104 | ||
c44ab6f1 | 1105 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1106 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1107 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1108 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1109 | return -1; |
1110 | } | |
1111 | ||
1112 | /* Make prefix_rd */ | |
1113 | prd.family = AF_UNSPEC; | |
1114 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1115 | memcpy(&prd.val, pfx, RD_BYTES); |
1116 | pfx += RD_BYTES; | |
185fb14a AK |
1117 | |
1118 | /* get the ESI */ | |
1119 | memcpy(&esi, pfx, ESI_BYTES); | |
1120 | pfx += ESI_BYTES; | |
1121 | ||
c44ab6f1 AK |
1122 | /* Copy Ethernet Tag */ |
1123 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1124 | eth_tag = ntohl(eth_tag); | |
1125 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1126 | |
c44ab6f1 | 1127 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1128 | |
c44ab6f1 AK |
1129 | /* EAD route prefix doesn't include the nexthop in the global |
1130 | * table | |
1131 | */ | |
3a6290bd | 1132 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1133 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1134 | /* Process the route. */ |
1135 | if (attr) { | |
1136 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1137 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1138 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1139 | } else { |
1140 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1141 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1142 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1143 | } |
1144 | return ret; | |
1145 | } | |
1146 | ||
c44ab6f1 AK |
1147 | /*****************************************************************************/ |
1148 | /* Ethernet Segment Management | |
1149 | * 1. Ethernet Segment is a collection of links attached to the same | |
1150 | * server (MHD) or switch (MHN) | |
1151 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1152 | * 10-byte ES-ID. | |
1153 | * 3. Local ESs are configured in zebra and sent to BGP | |
1154 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1155 | * created on first reference and release on last de-reference | |
1156 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1157 | * to have an ES peer. | |
1158 | */ | |
1159 | ||
1160 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1161 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1162 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1163 | * have been imported into one or more VNIs | |
185fb14a | 1164 | */ |
c44ab6f1 AK |
1165 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1166 | { | |
1167 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1168 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1169 | ||
1170 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1171 | } | |
1172 | ||
1173 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1174 | struct in_addr vtep_ip) | |
1175 | { | |
1176 | struct bgp_evpn_es_vtep *es_vtep; | |
1177 | ||
1178 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1179 | ||
1180 | es_vtep->es = es; | |
1181 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1182 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1183 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1184 | ||
1185 | return es_vtep; | |
1186 | } | |
1187 | ||
1188 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1189 | { | |
1190 | struct bgp_evpn_es *es = es_vtep->es; | |
1191 | ||
1192 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1193 | es_vtep->evi_cnt) | |
1194 | /* as long as there is some reference we can't free it */ | |
1195 | return; | |
1196 | ||
1197 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1198 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1199 | } | |
1200 | ||
1201 | /* check if VTEP is already part of the list */ | |
1202 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1203 | struct in_addr vtep_ip) | |
1204 | { | |
1205 | struct listnode *node = NULL; | |
1206 | struct bgp_evpn_es_vtep *es_vtep; | |
1207 | ||
1208 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1209 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1210 | return es_vtep; | |
1211 | } | |
1212 | return NULL; | |
1213 | } | |
1214 | ||
1215 | /* Send the remote ES to zebra for NHG programming */ | |
1216 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1217 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1218 | { | |
1219 | struct bgp_evpn_es *es = es_vtep->es; | |
1220 | struct stream *s; | |
74e2bd89 | 1221 | uint32_t flags = 0; |
c44ab6f1 AK |
1222 | |
1223 | /* Check socket. */ | |
1224 | if (!zclient || zclient->sock < 0) | |
1225 | return 0; | |
1226 | ||
1227 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1228 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1229 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1230 | zlog_debug("No zebra instance, not installing remote es %s", | |
1231 | es->esi_str); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
74e2bd89 AK |
1235 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1236 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1237 | ||
c44ab6f1 AK |
1238 | s = zclient->obuf; |
1239 | stream_reset(s); | |
1240 | ||
1241 | zclient_create_header(s, | |
1242 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1243 | bgp->vrf_id); | |
1244 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1245 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1246 | if (add) { |
1247 | stream_putl(s, flags); | |
1248 | stream_putc(s, es_vtep->df_alg); | |
1249 | stream_putw(s, es_vtep->df_pref); | |
1250 | } | |
c44ab6f1 AK |
1251 | |
1252 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1253 | ||
1254 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1255 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1256 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1257 | |
1258 | return zclient_send_message(zclient); | |
1259 | } | |
1260 | ||
1261 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1262 | struct bgp_evpn_es_vtep *es_vtep, |
1263 | bool param_change) | |
c44ab6f1 AK |
1264 | { |
1265 | bool old_active; | |
1266 | bool new_active; | |
1267 | ||
1268 | old_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1269 | /* currently we need an active EVI reference to use the VTEP as | |
1270 | * a nexthop. this may change... | |
1271 | */ | |
1272 | if (es_vtep->evi_cnt) | |
1273 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1274 | else | |
1275 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1276 | ||
1277 | new_active = !!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1278 | ||
74e2bd89 | 1279 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1280 | |
74e2bd89 AK |
1281 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1282 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1283 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1284 | new_active ? "active" : "inactive", | |
1285 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1286 | |
74e2bd89 AK |
1287 | /* send remote ES to zebra */ |
1288 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1289 | |
8bcb09a1 AK |
1290 | /* The NHG is updated first for efficient failover handling. |
1291 | * Note the NHG can be de-activated while there are bgp | |
1292 | * routes referencing it. Zebra is capable of handling that | |
1293 | * elegantly by holding the NHG till all routes using it are | |
1294 | * removed. | |
26c03e43 | 1295 | */ |
8bcb09a1 | 1296 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1297 | /* queue up the es for background consistency checks */ |
1298 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1299 | } | |
c44ab6f1 AK |
1300 | } |
1301 | ||
1302 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1303 | struct bgp_evpn_es *es, |
1304 | struct in_addr vtep_ip, | |
1305 | bool esr, uint8_t df_alg, | |
1306 | uint16_t df_pref) | |
c44ab6f1 AK |
1307 | { |
1308 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1309 | bool param_change = false; |
c44ab6f1 AK |
1310 | |
1311 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1312 | ||
1313 | if (!es_vtep) | |
1314 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1315 | ||
1316 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1317 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1318 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1319 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1320 | |
74e2bd89 | 1321 | if (esr) { |
c44ab6f1 | 1322 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1323 | if ((es_vtep->df_pref != df_pref) |
1324 | || (es_vtep->df_alg != df_alg)) { | |
1325 | param_change = true; | |
1326 | es_vtep->df_pref = df_pref; | |
1327 | es_vtep->df_alg = df_alg; | |
1328 | } | |
1329 | } else { | |
c44ab6f1 | 1330 | ++es_vtep->evi_cnt; |
74e2bd89 | 1331 | } |
c44ab6f1 | 1332 | |
74e2bd89 | 1333 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1334 | |
1335 | return es_vtep; | |
1336 | } | |
1337 | ||
1338 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1339 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1340 | { | |
74e2bd89 AK |
1341 | bool param_change = false; |
1342 | ||
c44ab6f1 | 1343 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1344 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1345 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1346 | if (esr) { |
1347 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1348 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1349 | param_change = true; | |
1350 | es_vtep->df_pref = 0; | |
1351 | es_vtep->df_alg = 0; | |
1352 | } | |
c44ab6f1 AK |
1353 | } else { |
1354 | if (es_vtep->evi_cnt) | |
1355 | --es_vtep->evi_cnt; | |
1356 | } | |
1357 | ||
74e2bd89 | 1358 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1359 | bgp_evpn_es_vtep_free(es_vtep); |
1360 | } | |
1361 | ||
1362 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1363 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1364 | { | |
1365 | struct bgp_evpn_es_vtep *es_vtep; | |
1366 | ||
1367 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1368 | if (es_vtep) | |
1369 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1370 | } | |
1371 | ||
26c03e43 | 1372 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1373 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1374 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1375 | * state changes. | |
1376 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1377 | * the detination for efficient updates on - | |
1378 | * a. VTEP add/del - this results in a L3NHG update. | |
1379 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1380 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1381 | ****************************************************************************/ |
60605cbc | 1382 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1383 | { |
1384 | bgp_evpn_path_es_unlink(es_info); | |
1385 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1386 | } | |
1387 | ||
60605cbc AK |
1388 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1389 | { | |
1390 | if (mh_info->es_info) | |
1391 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1392 | if (mh_info->nh_info) |
1393 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1394 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1395 | } | |
1396 | ||
26c03e43 AK |
1397 | static struct bgp_path_es_info * |
1398 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1399 | { | |
1400 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1401 | struct bgp_path_mh_info *mh_info; |
1402 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1403 | |
1404 | e = bgp_path_info_extra_get(pi); | |
1405 | ||
60605cbc AK |
1406 | /* If mh_info doesn't exist allocate it */ |
1407 | mh_info = e->mh_info; | |
1408 | if (!mh_info) | |
1409 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1410 | sizeof(struct bgp_path_mh_info)); | |
1411 | ||
26c03e43 | 1412 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1413 | es_info = mh_info->es_info; |
1414 | if (!es_info) { | |
1415 | mh_info->es_info = es_info = | |
1416 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1417 | sizeof(struct bgp_path_es_info)); | |
1418 | es_info->vni = vni; | |
1419 | es_info->pi = pi; | |
26c03e43 AK |
1420 | } |
1421 | ||
60605cbc | 1422 | return es_info; |
26c03e43 AK |
1423 | } |
1424 | ||
60605cbc | 1425 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1426 | { |
1427 | struct bgp_evpn_es *es = es_info->es; | |
1428 | struct bgp_path_info *pi; | |
26c03e43 AK |
1429 | |
1430 | if (!es) | |
1431 | return; | |
1432 | ||
1433 | pi = es_info->pi; | |
1434 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1435 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1436 | &pi->net->p, es->esi_str); | |
26c03e43 | 1437 | |
58bff4d1 AK |
1438 | if (es_info->vni) |
1439 | list_delete_node(es->macip_evi_path_list, | |
1440 | &es_info->es_listnode); | |
1441 | else | |
1442 | list_delete_node(es->macip_global_path_list, | |
1443 | &es_info->es_listnode); | |
74efb822 | 1444 | |
26c03e43 AK |
1445 | es_info->es = NULL; |
1446 | ||
1447 | /* if there are no other references against the ES it | |
1448 | * needs to be freed | |
1449 | */ | |
1450 | bgp_evpn_es_free(es, __func__); | |
1451 | ||
1452 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1453 | * along with the path. | |
1454 | */ | |
1455 | } | |
1456 | ||
1457 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1458 | { | |
1459 | struct bgp_path_es_info *es_info; | |
1460 | struct bgp_evpn_es *es; | |
58bff4d1 | 1461 | struct bgp *bgp_evpn; |
26c03e43 | 1462 | |
60605cbc AK |
1463 | es_info = (pi->extra && pi->extra->mh_info) |
1464 | ? pi->extra->mh_info->es_info | |
1465 | : NULL; | |
26c03e43 AK |
1466 | /* if the esi is zero just unlink the path from the old es */ |
1467 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1468 | if (es_info) | |
1469 | bgp_evpn_path_es_unlink(es_info); | |
1470 | return; | |
1471 | } | |
1472 | ||
58bff4d1 | 1473 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1474 | if (!bgp_evpn) |
1475 | return; | |
1476 | ||
1477 | /* setup es_info against the path if it doesn't aleady exist */ | |
1478 | if (!es_info) | |
1479 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1480 | ||
1481 | /* find-create ES */ | |
1482 | es = bgp_evpn_es_find(esi); | |
1483 | if (!es) | |
f61fbf21 | 1484 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1485 | |
1486 | /* dup check */ | |
1487 | if (es_info->es == es) | |
1488 | return; | |
1489 | ||
1490 | /* unlink old ES if any */ | |
1491 | bgp_evpn_path_es_unlink(es_info); | |
1492 | ||
1493 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1494 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1495 | es->esi_str); | |
26c03e43 AK |
1496 | |
1497 | /* link mac-ip path to the new destination ES */ | |
1498 | es_info->es = es; | |
1499 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1500 | if (es_info->vni) |
1501 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1502 | else | |
1503 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1504 | } |
1505 | ||
74efb822 AK |
1506 | static bool bgp_evpn_is_macip_path(struct bgp_path_info *pi) |
1507 | { | |
1508 | struct prefix_evpn *evp; | |
1509 | ||
1510 | /* Only MAC-IP routes need to be linked (MAC-only routes can be | |
1511 | * skipped) as these lists are maintained for managing | |
1512 | * host routes in the tenant VRF | |
1513 | */ | |
1514 | evp = (struct prefix_evpn *)&pi->net->p; | |
1515 | return is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp); | |
1516 | } | |
1517 | ||
58bff4d1 AK |
1518 | /* When a remote ES is added to a VRF, routes using that as |
1519 | * a destination need to be migrated to a L3NHG or viceversa. | |
1520 | * This is done indirectly by re-attempting an install of the | |
1521 | * route in the associated VRFs. As a part of the VRF install use | |
1522 | * of l3 NHG is evaluated and this results in the | |
1523 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1524 | */ |
1525 | static void | |
1526 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1527 | const char *reason) |
26c03e43 AK |
1528 | { |
1529 | struct listnode *node; | |
1530 | struct bgp_path_es_info *es_info; | |
1531 | struct bgp_path_info *pi; | |
58bff4d1 | 1532 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1533 | |
36dd4574 AK |
1534 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1535 | return; | |
1536 | ||
26c03e43 | 1537 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1538 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1539 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1540 | |
58bff4d1 | 1541 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1542 | pi = es_info->pi; |
26c03e43 | 1543 | |
74efb822 AK |
1544 | if (!bgp_evpn_is_macip_path(pi)) |
1545 | continue; | |
1546 | ||
26c03e43 | 1547 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
2eef4f20 | 1548 | zlog_debug( |
58bff4d1 AK |
1549 | "update path %pFX linked to es %s on vrf chg", |
1550 | &pi->net->p, es->esi_str); | |
1551 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1552 | 1); | |
26c03e43 AK |
1553 | } |
1554 | } | |
1555 | ||
c44ab6f1 AK |
1556 | /* compare ES-IDs for the global ES RB tree */ |
1557 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1558 | const struct bgp_evpn_es *es2) | |
1559 | { | |
1560 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1561 | } | |
1562 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1563 | ||
1564 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1565 | { |
c44ab6f1 | 1566 | struct bgp_evpn_es tmp; |
185fb14a | 1567 | |
185fb14a | 1568 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1569 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1570 | } |
1571 | ||
c44ab6f1 | 1572 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1573 | { |
c44ab6f1 | 1574 | struct bgp_evpn_es *es; |
185fb14a AK |
1575 | |
1576 | if (!bgp) | |
1577 | return NULL; | |
1578 | ||
c44ab6f1 | 1579 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1580 | |
c44ab6f1 | 1581 | /* set the ESI */ |
185fb14a | 1582 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1583 | |
1584 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1585 | es->es_vtep_list = list_new(); |
1586 | listset_app_node_mem(es->es_vtep_list); | |
1587 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1588 | |
c44ab6f1 | 1589 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1590 | |
c44ab6f1 | 1591 | /* Initialize the ES routing table */ |
185fb14a AK |
1592 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1593 | ||
c44ab6f1 AK |
1594 | /* Add to rb_tree */ |
1595 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1596 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1597 | return NULL; | |
1598 | } | |
1599 | ||
c44ab6f1 AK |
1600 | /* Initialise the ES-EVI list */ |
1601 | es->es_evi_list = list_new(); | |
1602 | listset_app_node_mem(es->es_evi_list); | |
1603 | ||
c589d847 AK |
1604 | /* Initialise the ES-VRF list used for L3NHG management */ |
1605 | es->es_vrf_list = list_new(); | |
1606 | listset_app_node_mem(es->es_vrf_list); | |
1607 | ||
26c03e43 | 1608 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1609 | es->macip_evi_path_list = list_new(); |
1610 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1611 | es->macip_global_path_list = list_new(); |
1612 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1613 | |
c44ab6f1 AK |
1614 | QOBJ_REG(es, bgp_evpn_es); |
1615 | ||
185fb14a AK |
1616 | return es; |
1617 | } | |
1618 | ||
c44ab6f1 | 1619 | /* Free a given ES - |
185fb14a AK |
1620 | * This just frees appropriate memory, caller should have taken other |
1621 | * needed actions. | |
1622 | */ | |
45a859f1 | 1623 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1624 | { |
26c03e43 | 1625 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1626 | || listcount(es->macip_evi_path_list) |
1627 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1628 | return; |
1629 | ||
45a859f1 AK |
1630 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1631 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1632 | ||
c44ab6f1 AK |
1633 | /* cleanup resources maintained against the ES */ |
1634 | list_delete(&es->es_evi_list); | |
c589d847 | 1635 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1636 | list_delete(&es->es_vtep_list); |
d656e0ae | 1637 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1638 | list_delete(&es->macip_global_path_list); |
185fb14a | 1639 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1640 | |
1641 | /* remove the entry from various databases */ | |
1642 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1643 | bgp_evpn_es_cons_checks_pend_del(es); | |
1644 | ||
185fb14a AK |
1645 | QOBJ_UNREG(es); |
1646 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1647 | } | |
1648 | ||
74efb822 AK |
1649 | static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es *es) |
1650 | { | |
1651 | return (es->flags & BGP_EVPNES_LOCAL) | |
1652 | && !(es->flags & BGP_EVPNES_BYPASS); | |
1653 | } | |
1654 | ||
c44ab6f1 AK |
1655 | /* init local info associated with the ES */ |
1656 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1657 | { |
c44ab6f1 | 1658 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
74efb822 AK |
1659 | bool old_is_local; |
1660 | bool is_local; | |
185fb14a | 1661 | |
c44ab6f1 AK |
1662 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1663 | return; | |
185fb14a | 1664 | |
74efb822 | 1665 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1666 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
74efb822 | 1667 | |
c44ab6f1 AK |
1668 | listnode_init(&es->es_listnode, es); |
1669 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1670 | |
c44ab6f1 AK |
1671 | /* auto derive RD for this es */ |
1672 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1673 | es->prd.family = AF_UNSPEC; | |
1674 | es->prd.prefixlen = 64; | |
23d0a753 | 1675 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 | 1676 | (void)str2prefix_rd(buf, &es->prd); |
74efb822 AK |
1677 | |
1678 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1679 | if (old_is_local != is_local) | |
1680 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
c44ab6f1 AK |
1681 | } |
1682 | ||
1683 | /* clear any local info associated with the ES */ | |
d57e0c05 | 1684 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es, bool finish) |
c44ab6f1 | 1685 | { |
74efb822 AK |
1686 | bool old_is_local; |
1687 | bool is_local; | |
1688 | ||
c44ab6f1 AK |
1689 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1690 | return; | |
185fb14a | 1691 | |
74efb822 | 1692 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1693 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1694 | |
74efb822 | 1695 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
d57e0c05 | 1696 | if (!finish && (old_is_local != is_local)) |
74efb822 AK |
1697 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); |
1698 | ||
c44ab6f1 AK |
1699 | /* remove from the ES local list */ |
1700 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1701 | ||
1702 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1703 | ||
45a859f1 | 1704 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1705 | } |
1706 | ||
c44ab6f1 AK |
1707 | /* eval remote info associated with the ES */ |
1708 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1709 | { | |
1710 | if (es->remote_es_evi_cnt) { | |
1711 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1712 | } else { | |
1713 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1714 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1715 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1716 | } |
1717 | } | |
1718 | } | |
1719 | ||
70524092 AK |
1720 | /* If ES is present and local it needs to be active/oper-up for |
1721 | * including L3 EC | |
1722 | */ | |
1723 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1724 | { |
70524092 AK |
1725 | struct bgp_evpn_es *es; |
1726 | ||
1727 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1728 | return true; | |
1729 | ||
1730 | es = bgp_evpn_es_find(esi); | |
1731 | ||
1732 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1733 | || bgp_evpn_local_es_is_active(es)); | |
1734 | } | |
1735 | ||
74efb822 AK |
1736 | static bool bgp_evpn_is_valid_local_path(struct bgp_path_info *pi) |
1737 | { | |
1738 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1739 | && pi->type == ZEBRA_ROUTE_BGP | |
1740 | && pi->sub_type == BGP_ROUTE_STATIC); | |
1741 | } | |
1742 | ||
d656e0ae AK |
1743 | /* Update all local MAC-IP routes in the VNI routing table associated |
1744 | * with the ES. When the ES is down the routes are advertised without | |
1745 | * the L3 extcomm | |
70524092 AK |
1746 | */ |
1747 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1748 | { | |
1749 | struct listnode *node; | |
1750 | struct bgp_path_es_info *es_info; | |
1751 | struct bgp_path_info *pi; | |
70524092 AK |
1752 | struct bgp *bgp; |
1753 | struct bgpevpn *vpn; | |
1754 | ||
1755 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1756 | return; | |
1757 | ||
1758 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1759 | zlog_debug("update paths linked to es %s on oper chg", | |
1760 | es->esi_str); | |
1761 | ||
1762 | bgp = bgp_get_evpn(); | |
d656e0ae | 1763 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 | 1764 | pi = es_info->pi; |
74efb822 AK |
1765 | |
1766 | if (!bgp_evpn_is_valid_local_path(pi)) | |
70524092 AK |
1767 | continue; |
1768 | ||
74efb822 | 1769 | if (!bgp_evpn_is_macip_path(pi)) |
70524092 AK |
1770 | continue; |
1771 | ||
1772 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1773 | if (!vpn) | |
1774 | continue; | |
1775 | ||
1776 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 | 1777 | zlog_debug( |
70545a29 AK |
1778 | "update path %d %pFX linked to es %s on oper chg", |
1779 | es_info->vni, &pi->net->p, es->esi_str); | |
70524092 AK |
1780 | |
1781 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1782 | __func__); | |
1783 | } | |
74be8313 AK |
1784 | } |
1785 | ||
74efb822 AK |
1786 | static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info *pi) |
1787 | { | |
1788 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1789 | && pi->type == ZEBRA_ROUTE_BGP | |
1790 | && pi->sub_type == BGP_ROUTE_NORMAL); | |
1791 | } | |
1792 | ||
1793 | /* If an ES is no longer local (or becomes local) we need to re-install | |
1794 | * paths using that ES as destination. This is needed as the criteria | |
1795 | * for best path selection has changed. | |
1796 | */ | |
1797 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, | |
1798 | bool is_local) | |
1799 | { | |
1800 | struct listnode *node; | |
1801 | struct bgp_path_es_info *es_info; | |
1802 | struct bgp_path_info *pi; | |
74efb822 AK |
1803 | bool tmp_local; |
1804 | struct attr *attr_new; | |
1805 | struct attr attr_tmp; | |
1806 | ||
1807 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1808 | zlog_debug("update paths linked to es %s on chg to %s", | |
1809 | es->esi_str, is_local ? "local" : "non-local"); | |
1810 | ||
1811 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { | |
1812 | pi = es_info->pi; | |
1813 | ||
1814 | /* Consider "valid" remote routes */ | |
1815 | if (!bgp_evpn_is_valid_bgp_path(pi)) | |
1816 | continue; | |
1817 | ||
1818 | if (!pi->attr) | |
1819 | continue; | |
1820 | ||
1821 | tmp_local = !!(pi->attr->es_flags & ATTR_ES_IS_LOCAL); | |
1822 | if (tmp_local == is_local) | |
1823 | continue; | |
1824 | ||
1825 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1826 | zlog_debug( | |
70545a29 AK |
1827 | "update path %pFX linked to es %s on chg to %s", |
1828 | &pi->net->p, es->esi_str, | |
1829 | is_local ? "local" : "non-local"); | |
74efb822 AK |
1830 | |
1831 | attr_tmp = *pi->attr; | |
1832 | if (is_local) | |
1833 | attr_tmp.es_flags |= ATTR_ES_IS_LOCAL; | |
1834 | else | |
1835 | attr_tmp.es_flags &= ~ATTR_ES_IS_LOCAL; | |
1836 | attr_new = bgp_attr_intern(&attr_tmp); | |
1837 | bgp_attr_unintern(&pi->attr); | |
1838 | pi->attr = attr_new; | |
1839 | bgp_evpn_import_type2_route(pi, 1); | |
1840 | } | |
1841 | } | |
1842 | ||
74be8313 AK |
1843 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, |
1844 | struct bgp_evpn_es *es) | |
185fb14a | 1845 | { |
185fb14a | 1846 | struct prefix_evpn p; |
c44ab6f1 | 1847 | int ret; |
185fb14a | 1848 | |
c44ab6f1 AK |
1849 | /* withdraw ESR */ |
1850 | /* Delete and withdraw locally learnt ES route */ | |
1851 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1852 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1853 | if (ret) { | |
1854 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1855 | "%u failed to delete type-4 route for ESI %s", | |
1856 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1857 | } |
1858 | ||
c44ab6f1 AK |
1859 | /* withdraw EAD-EVI */ |
1860 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1861 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1862 | |
c44ab6f1 AK |
1863 | /* withdraw EAD-ES */ |
1864 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1865 | &es->esi, es->originator_ip); | |
1866 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1867 | if (ret) { | |
1868 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1869 | "%u failed to delete type-1 route for ESI %s", | |
1870 | bgp->vrf_id, es->esi_str); | |
1871 | } | |
70524092 AK |
1872 | |
1873 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1874 | } |
1875 | ||
74be8313 AK |
1876 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1877 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1878 | { |
74be8313 | 1879 | bool old_active; |
c44ab6f1 | 1880 | |
74be8313 AK |
1881 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1882 | return; | |
c44ab6f1 | 1883 | |
74be8313 AK |
1884 | old_active = bgp_evpn_local_es_is_active(es); |
1885 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1886 | ||
1887 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1888 | zlog_debug("local es %s down", es->esi_str); | |
1889 | ||
1890 | if (old_active) | |
1891 | bgp_evpn_local_es_deactivate(bgp, es); | |
1892 | } | |
1893 | ||
1894 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1895 | bool regen_ead, bool regen_esr) | |
1896 | { | |
1897 | struct prefix_evpn p; | |
c44ab6f1 | 1898 | |
74e2bd89 AK |
1899 | if (regen_esr) { |
1900 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1901 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1902 | /* generate ESR */ | |
1903 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1904 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1905 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1906 | "%u: Type4 route creation failure for ESI %s", | |
1907 | bgp->vrf_id, es->esi_str); | |
1908 | } | |
c44ab6f1 | 1909 | |
74e2bd89 AK |
1910 | if (regen_ead) { |
1911 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1912 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1913 | /* generate EAD-EVI */ | |
1914 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1915 | |
74e2bd89 AK |
1916 | /* generate EAD-ES */ |
1917 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1918 | es->originator_ip); | |
d934e491 | 1919 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1920 | } |
70524092 AK |
1921 | |
1922 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1923 | } |
1924 | ||
74be8313 AK |
1925 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1926 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1927 | bool regen_esr) | |
1928 | { | |
1929 | bool regen_ead = false; | |
1930 | bool active = false; | |
1931 | ||
1932 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1933 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1934 | zlog_debug("local es %s up", es->esi_str); | |
1935 | ||
1936 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1937 | regen_esr = true; | |
1938 | regen_ead = true; | |
1939 | } | |
1940 | ||
1941 | active = bgp_evpn_local_es_is_active(es); | |
1942 | if (active && (regen_ead || regen_esr)) | |
1943 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
1944 | } | |
1945 | ||
1946 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
1947 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
1948 | * bypass state. | |
1949 | * PS: EAD-per-EVI will continue to be advertised | |
1950 | */ | |
1951 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
1952 | struct bgp_evpn_es *es, bool bypass) | |
1953 | { | |
1954 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
1955 | bool old_active; | |
1956 | bool new_active; | |
74efb822 AK |
1957 | bool old_is_local; |
1958 | bool is_local; | |
74be8313 AK |
1959 | |
1960 | if (bypass == old_bypass) | |
1961 | return; | |
1962 | ||
1963 | old_active = bgp_evpn_local_es_is_active(es); | |
74efb822 | 1964 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
74be8313 AK |
1965 | if (bypass) |
1966 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1967 | else | |
1968 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
1969 | ||
1970 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1971 | zlog_debug("local es %s bypass %s", es->esi_str, | |
1972 | bypass ? "set" : "clear"); | |
1973 | ||
1974 | new_active = bgp_evpn_local_es_is_active(es); | |
1975 | if (old_active != new_active) { | |
1976 | if (new_active) | |
1977 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
1978 | else | |
1979 | bgp_evpn_local_es_deactivate(bgp, es); | |
1980 | } | |
74efb822 AK |
1981 | |
1982 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1983 | if (old_is_local != is_local) | |
1984 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
74be8313 AK |
1985 | } |
1986 | ||
c44ab6f1 AK |
1987 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
1988 | { | |
1989 | struct bgp_evpn_es_evi *es_evi; | |
1990 | struct listnode *evi_node, *evi_next_node; | |
1991 | ||
1992 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1993 | zlog_debug("del local es %s", es->esi_str); | |
1994 | ||
1995 | /* Delete all local EVPN ES routes from ESI table | |
1996 | * and schedule for processing (to withdraw from peers)) | |
1997 | */ | |
1998 | bgp_evpn_es_route_del_all(bgp, es); | |
1999 | ||
2000 | /* release all local ES EVIs associated with the ES */ | |
2001 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
2002 | evi_next_node, es_evi)) { | |
2003 | bgp_evpn_local_es_evi_do_del(es_evi); | |
2004 | } | |
2005 | ||
2006 | /* Clear local info associated with the ES and free it up if there is | |
2007 | * no remote reference | |
2008 | */ | |
d57e0c05 | 2009 | bgp_evpn_es_local_info_clear(es, false); |
c44ab6f1 AK |
2010 | } |
2011 | ||
74efb822 | 2012 | bool bgp_evpn_is_esi_local_and_non_bypass(esi_t *esi) |
7904e9fd AK |
2013 | { |
2014 | struct bgp_evpn_es *es = NULL; | |
2015 | ||
2016 | /* Lookup ESI hash - should exist. */ | |
2017 | es = bgp_evpn_es_find(esi); | |
74efb822 AK |
2018 | |
2019 | return es && bgp_evpn_is_es_local_and_non_bypass(es); | |
7904e9fd AK |
2020 | } |
2021 | ||
c44ab6f1 AK |
2022 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
2023 | { | |
2024 | struct bgp_evpn_es *es = NULL; | |
2025 | ||
2026 | /* Lookup ESI hash - should exist. */ | |
2027 | es = bgp_evpn_es_find(esi); | |
2028 | if (!es) { | |
2029 | flog_warn(EC_BGP_EVPN_ESI, | |
2030 | "%u: ES %s missing at local ES DEL", | |
2031 | bgp->vrf_id, es->esi_str); | |
2032 | return -1; | |
2033 | } | |
2034 | ||
2035 | bgp_evpn_local_es_do_del(bgp, es); | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | /* Handle device to ES id association. Results in the creation of a local | |
2040 | * ES. | |
2041 | */ | |
2042 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 2043 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 2044 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
2045 | { |
2046 | char buf[ESI_STR_LEN]; | |
2047 | struct bgp_evpn_es *es; | |
2048 | bool new_es = true; | |
74e2bd89 | 2049 | bool regen_esr = false; |
c44ab6f1 AK |
2050 | |
2051 | /* create the new es */ | |
2052 | es = bgp_evpn_es_find(esi); | |
2053 | if (es) { | |
2054 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
2055 | new_es = false; | |
2056 | } else { | |
2057 | es = bgp_evpn_es_new(bgp, esi); | |
2058 | if (!es) { | |
2059 | flog_err(EC_BGP_ES_CREATE, | |
2060 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
2061 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
2062 | return -1; | |
2063 | } | |
2064 | } | |
2065 | ||
2066 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
2067 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
2068 | es->esi_str, &originator_ip, df_pref, | |
2069 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
2070 | |
2071 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
2072 | if (df_pref != es->df_pref) { |
2073 | es->df_pref = df_pref; | |
2074 | regen_esr = true; | |
2075 | } | |
c44ab6f1 AK |
2076 | bgp_evpn_es_local_info_set(bgp, es); |
2077 | ||
2078 | /* import all remote Type-4 routes in the ES table */ | |
2079 | if (new_es) | |
2080 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
2081 | true /* install */); | |
2082 | ||
2083 | /* create and advertise EAD-EVI routes for the ES - | |
2084 | * XXX - till an ES-EVI reference is created there is really nothing to | |
2085 | * advertise | |
2086 | */ | |
2087 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
2088 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
2089 | ||
74be8313 AK |
2090 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
2091 | ||
c44ab6f1 AK |
2092 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
2093 | * can be generated even if the link is inactive. | |
2094 | */ | |
2095 | if (oper_up) | |
74e2bd89 | 2096 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
2097 | else |
2098 | bgp_evpn_local_es_down(bgp, es); | |
2099 | ||
2100 | return 0; | |
2101 | } | |
2102 | ||
9e0c2fd1 AK |
2103 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2104 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2105 | { |
2106 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2107 | struct listnode *node; | |
2108 | struct bgp_evpn_es_vtep *es_vtep; | |
2109 | bool first = true; | |
ec779825 | 2110 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2111 | |
2112 | vtep_str[0] = '\0'; | |
2113 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2114 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2115 | |
c44ab6f1 | 2116 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2117 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2118 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2119 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2120 | |
2121 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2122 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2123 | if (first) | |
c44ab6f1 | 2124 | first = false; |
9e0c2fd1 AK |
2125 | else |
2126 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2127 | strlcat(vtep_str, |
ec779825 AK |
2128 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2129 | sizeof(ip_buf)), | |
23d0a753 | 2130 | vtep_str_size); |
9e0c2fd1 AK |
2131 | strlcat(vtep_str, "(", vtep_str_size); |
2132 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2133 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2134 | } |
2135 | ||
2136 | return vtep_str; | |
2137 | } | |
2138 | ||
c44ab6f1 AK |
2139 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2140 | struct bgp_evpn_es_vtep *es_vtep) | |
2141 | { | |
2142 | json_object *json_vtep_entry; | |
2143 | json_object *json_flags; | |
ec779825 | 2144 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2145 | |
2146 | json_vtep_entry = json_object_new_object(); | |
2147 | ||
ec779825 AK |
2148 | json_object_string_add( |
2149 | json_vtep_entry, "vtep_ip", | |
2150 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
2151 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2152 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2153 | json_flags = json_object_new_array(); | |
2154 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2155 | json_array_string_add(json_flags, "esr"); | |
2156 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2157 | json_array_string_add(json_flags, "active"); | |
2158 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2159 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2160 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2161 | es_vtep->df_pref); | |
2162 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2163 | es_vtep->df_pref); | |
2164 | } | |
c44ab6f1 AK |
2165 | } |
2166 | ||
2167 | json_object_array_add(json_vteps, | |
2168 | json_vtep_entry); | |
2169 | } | |
2170 | ||
74e2bd89 AK |
2171 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2172 | struct bgp_evpn_es *es) | |
2173 | { | |
2174 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2175 | struct listnode *node; | |
2176 | struct bgp_evpn_es_vtep *es_vtep; | |
2177 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2178 | ||
2179 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2180 | vtep_flag_str[0] = '\0'; | |
2181 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2182 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2183 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2184 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2185 | ||
2186 | if (!strlen(vtep_flag_str)) | |
2187 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2188 | ||
ec779825 | 2189 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2190 | vtep_flag_str); |
2191 | ||
2192 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2193 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2194 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2195 | sizeof(alg_buf)), | |
2196 | es_vtep->df_pref); | |
2197 | else | |
2198 | vty_out(vty, "\n"); | |
2199 | } | |
2200 | } | |
2201 | ||
c44ab6f1 AK |
2202 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2203 | struct bgp_evpn_es *es, json_object *json) | |
2204 | { | |
2205 | char buf1[RD_ADDRSTRLEN]; | |
2206 | struct listnode *node; | |
2207 | struct bgp_evpn_es_vtep *es_vtep; | |
2208 | ||
2209 | if (json) { | |
2210 | json_object *json_vteps; | |
2211 | json_object *json_types; | |
2212 | ||
2213 | json_object_string_add(json, "esi", es->esi_str); | |
2214 | json_object_string_add(json, "rd", | |
2215 | prefix_rd2str(&es->prd, buf1, | |
2216 | sizeof(buf1))); | |
2217 | ||
2218 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2219 | json_types = json_object_new_array(); | |
2220 | if (es->flags & BGP_EVPNES_LOCAL) | |
2221 | json_array_string_add(json_types, "local"); | |
2222 | if (es->flags & BGP_EVPNES_REMOTE) | |
2223 | json_array_string_add(json_types, "remote"); | |
2224 | json_object_object_add(json, "type", json_types); | |
2225 | } | |
2226 | ||
2227 | if (listcount(es->es_vtep_list)) { | |
2228 | json_vteps = json_object_new_array(); | |
2229 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2230 | node, es_vtep)) { | |
2231 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2232 | } | |
2233 | json_object_object_add(json, "vteps", json_vteps); | |
2234 | } | |
2235 | json_object_int_add(json, "vniCount", | |
2236 | listcount(es->es_evi_list)); | |
2237 | } else { | |
2238 | char type_str[4]; | |
2239 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2240 | ||
2241 | type_str[0] = '\0'; | |
74be8313 AK |
2242 | if (es->flags & BGP_EVPNES_BYPASS) |
2243 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2244 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2245 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2246 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2247 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2248 | if (es->inconsistencies) |
9e0c2fd1 | 2249 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2250 | |
9e0c2fd1 | 2251 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2252 | |
2253 | if (es->flags & BGP_EVPNES_LOCAL) | |
2254 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2255 | else | |
9e0c2fd1 | 2256 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2257 | |
2258 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2259 | es->esi_str, type_str, buf1, | |
2260 | listcount(es->es_evi_list), vtep_str); | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2265 | struct bgp_evpn_es *es, json_object *json) | |
2266 | { | |
ec779825 | 2267 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 2268 | |
c44ab6f1 AK |
2269 | if (json) { |
2270 | json_object *json_flags; | |
2271 | json_object *json_incons; | |
74e2bd89 AK |
2272 | json_object *json_vteps; |
2273 | struct listnode *node; | |
2274 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2275 | |
2276 | /* Add the "brief" info first */ | |
2277 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2278 | if (es->flags |
2279 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2280 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2281 | json_flags = json_object_new_array(); |
2282 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2283 | json_array_string_add(json_flags, "up"); | |
2284 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2285 | json_array_string_add(json_flags, | |
2286 | "advertiseEVI"); | |
74be8313 AK |
2287 | if (es->flags & BGP_EVPNES_BYPASS) |
2288 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2289 | json_object_object_add(json, "flags", json_flags); |
2290 | } | |
2291 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 2292 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 2293 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
2294 | json_object_int_add(json, "remoteVniCount", |
2295 | es->remote_es_evi_cnt); | |
229587fb AK |
2296 | json_object_int_add(json, "vrfCount", |
2297 | listcount(es->es_vrf_list)); | |
2298 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2299 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2300 | json_object_int_add(json, "macipGlobalPathCount", |
2301 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2302 | json_object_int_add(json, "inconsistentVniVtepCount", |
2303 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2304 | if (listcount(es->es_vtep_list)) { |
2305 | json_vteps = json_object_new_array(); | |
2306 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2307 | es_vtep)) { | |
2308 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2309 | } | |
2310 | json_object_object_add(json, "vteps", json_vteps); | |
2311 | } | |
c44ab6f1 AK |
2312 | if (es->inconsistencies) { |
2313 | json_incons = json_object_new_array(); | |
2314 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2315 | json_array_string_add(json_incons, | |
2316 | "vni-vtep-mismatch"); | |
2317 | json_object_object_add(json, "inconsistencies", | |
2318 | json_incons); | |
2319 | } | |
2320 | } else { | |
2321 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2322 | char type_str[4]; | |
c44ab6f1 AK |
2323 | char buf1[RD_ADDRSTRLEN]; |
2324 | ||
2325 | type_str[0] = '\0'; | |
2326 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2327 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2328 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2329 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2330 | |
c44ab6f1 AK |
2331 | if (es->flags & BGP_EVPNES_LOCAL) |
2332 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2333 | else | |
9e0c2fd1 | 2334 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2335 | |
2336 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2337 | vty_out(vty, " Type: %s\n", type_str); | |
2338 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2339 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2340 | if (es->flags & BGP_EVPNES_LOCAL) |
2341 | vty_out(vty, " Local ES DF preference: %u\n", | |
2342 | es->df_pref); | |
74be8313 AK |
2343 | if (es->flags & BGP_EVPNES_BYPASS) |
2344 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2345 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2346 | vty_out(vty, " Remote VNI Count: %d\n", | |
2347 | es->remote_es_evi_cnt); | |
229587fb | 2348 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2349 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2350 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2351 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2352 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2353 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2354 | es->incons_evi_vtep_cnt); | |
2355 | if (es->inconsistencies) { | |
2356 | incons_str[0] = '\0'; | |
2357 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2358 | strlcat(incons_str, "vni-vtep-mismatch", |
2359 | sizeof(incons_str)); | |
c44ab6f1 | 2360 | } else { |
9e0c2fd1 | 2361 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2362 | } |
2363 | vty_out(vty, " Inconsistencies: %s\n", | |
2364 | incons_str); | |
74e2bd89 AK |
2365 | if (listcount(es->es_vtep_list)) { |
2366 | vty_out(vty, " VTEPs:\n"); | |
2367 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2368 | } | |
c44ab6f1 AK |
2369 | vty_out(vty, "\n"); |
2370 | } | |
2371 | } | |
2372 | ||
2373 | /* Display all ESs */ | |
2374 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2375 | { | |
2376 | struct bgp_evpn_es *es; | |
9c7edc03 | 2377 | json_object *json_array = NULL; |
c44ab6f1 AK |
2378 | json_object *json = NULL; |
2379 | ||
2380 | if (uj) { | |
2381 | /* create an array of ESs */ | |
2382 | json_array = json_object_new_array(); | |
2383 | } else { | |
2384 | if (!detail) { | |
2385 | vty_out(vty, | |
74be8313 | 2386 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2387 | vty_out(vty, |
2388 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2389 | vty_out(vty, | |
2390 | "%-30s %-5s %-21s %-8s %s\n", | |
2391 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2392 | } | |
2393 | } | |
2394 | ||
2395 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2396 | if (uj) | |
2397 | /* create a separate json object for each ES */ | |
2398 | json = json_object_new_object(); | |
2399 | if (detail) | |
2400 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2401 | else | |
2402 | bgp_evpn_es_show_entry(vty, es, json); | |
2403 | /* add ES to the json array */ | |
2404 | if (uj) | |
2405 | json_object_array_add(json_array, json); | |
2406 | } | |
2407 | ||
2408 | /* print the array of json-ESs */ | |
2409 | if (uj) { | |
2410 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2411 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2412 | json_object_free(json_array); | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | /* Display specific ES */ | |
2417 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2418 | { | |
2419 | struct bgp_evpn_es *es; | |
2420 | json_object *json = NULL; | |
2421 | ||
2422 | if (uj) | |
2423 | json = json_object_new_object(); | |
2424 | ||
2425 | es = bgp_evpn_es_find(esi); | |
2426 | if (es) { | |
2427 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2428 | } else { | |
2429 | if (!uj) | |
2430 | vty_out(vty, "ESI not found\n"); | |
2431 | } | |
2432 | ||
2433 | if (uj) { | |
2434 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2435 | json, JSON_C_TO_STRING_PRETTY)); | |
2436 | json_object_free(json); | |
2437 | } | |
2438 | } | |
2439 | ||
c589d847 AK |
2440 | /*****************************************************************************/ |
2441 | /* Ethernet Segment to VRF association - | |
2442 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2443 | * triggers the creation of an ES-VRF entry. | |
2444 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2445 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2446 | * a /32 or host route entry in the dataplane. If the destination of | |
2447 | * the host route is a remote-ES the route is programmed with the | |
2448 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2449 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2450 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2451 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2452 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2453 | * allowing for a faster failover. | |
2454 | * | |
2455 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2456 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2457 | * in that VRF. | |
2458 | */ | |
2459 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2460 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2461 | bool v4_nhg) | |
c589d847 | 2462 | { |
8bcb09a1 AK |
2463 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2464 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2465 | struct listnode *node; |
2466 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2467 | struct nexthop nh; |
2468 | struct zapi_nexthop *api_nh; | |
2469 | struct zapi_nhg api_nhg = {}; | |
2470 | ||
2471 | /* Skip installation of L3-NHG if host routes used */ | |
2472 | if (!nhg_id) | |
2473 | return; | |
c589d847 AK |
2474 | |
2475 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2476 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2477 | es_vrf->bgp_vrf->vrf_id, | |
2478 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2479 | ||
2480 | /* only the gateway ip changes for each NH. rest of the params | |
2481 | * are constant | |
2482 | */ | |
2483 | memset(&nh, 0, sizeof(nh)); | |
2484 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2485 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2486 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2487 | nh.weight = 1; | |
2488 | nh.type = | |
2489 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2490 | ||
2491 | api_nhg.id = nhg_id; | |
c589d847 | 2492 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2493 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2494 | continue; | |
2495 | ||
2496 | /* overwrite the gw */ | |
2497 | if (v4_nhg) | |
2498 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2499 | else | |
2500 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2501 | es_vtep->vtep_ip); | |
2502 | ||
2503 | /* convert to zapi format */ | |
2504 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2505 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2506 | ||
2507 | ++api_nhg.nexthop_num; | |
2508 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2509 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2510 | &es_vtep->vtep_ip, | |
2511 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2512 | } |
2513 | ||
8bcb09a1 AK |
2514 | if (!api_nhg.nexthop_num) |
2515 | return; | |
2516 | ||
2517 | if (api_nhg.nexthop_num > MULTIPATH_NUM) | |
2518 | return; | |
2519 | ||
2520 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); | |
c589d847 AK |
2521 | } |
2522 | ||
8bcb09a1 AK |
2523 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2524 | { | |
2525 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2526 | return false; | |
2527 | ||
2528 | /* Check socket. */ | |
2529 | if (!zclient || zclient->sock < 0) | |
2530 | return false; | |
2531 | ||
2532 | return true; | |
2533 | } | |
2534 | ||
2535 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2536 | { |
8bcb09a1 AK |
2537 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2538 | return; | |
2539 | ||
2540 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2541 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2542 | } | |
2543 | ||
2544 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2545 | bool v4_nhg) | |
2546 | { | |
2547 | struct zapi_nhg api_nhg = {}; | |
2548 | ||
2549 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2550 | ||
2551 | /* Skip installation of L3-NHG if host routes used */ | |
2552 | if (!api_nhg.id) | |
2553 | return; | |
2554 | ||
c589d847 | 2555 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2556 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2557 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2558 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2559 | ||
2560 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2561 | } | |
c589d847 | 2562 | |
8bcb09a1 AK |
2563 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2564 | { | |
2565 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2566 | return; | |
2567 | ||
2568 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2569 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2570 | } |
2571 | ||
2572 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2573 | { | |
2574 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2575 | return; | |
2576 | ||
2577 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2578 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2579 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2580 | es_vrf->nhg_id); | |
2581 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2582 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2583 | /* MAC-IPs can now be installed via the L3NHG */ |
2584 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2585 | } |
2586 | ||
2587 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2588 | { | |
2589 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2590 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2591 | return; | |
2592 | } | |
2593 | ||
2594 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2595 | if (!update) | |
2596 | return; | |
2597 | } else { | |
2598 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2599 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2600 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2601 | es_vrf->nhg_id); | |
2602 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2603 | /* MAC-IPs can now be installed via the L3NHG */ |
2604 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2605 | } |
2606 | ||
2607 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2608 | } | |
2609 | ||
2610 | /* when a VTEP is activated or de-activated against an ES associated | |
2611 | * VRFs' NHG needs to be updated | |
2612 | */ | |
2613 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2614 | { | |
2615 | struct bgp_evpn_es_vrf *es_vrf; | |
2616 | struct listnode *es_vrf_node; | |
2617 | ||
2618 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2619 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2620 | ||
2621 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2622 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2623 | } | |
2624 | ||
2625 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2626 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2627 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2628 | { | |
2629 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2630 | } | |
2631 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2632 | ||
2633 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2634 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2635 | { | |
2636 | /* Initialize the ES-VRF RB tree */ | |
2637 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2638 | } | |
2639 | ||
2640 | /* find the ES-VRF in the per-VRF RB tree */ | |
2641 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2642 | struct bgp *bgp_vrf) | |
2643 | { | |
2644 | struct bgp_evpn_es_vrf es_vrf; | |
2645 | ||
2646 | es_vrf.es = es; | |
2647 | ||
2648 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2649 | } | |
2650 | ||
2651 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2652 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2653 | struct bgp *bgp_vrf) | |
2654 | { | |
2655 | struct bgp_evpn_es_vrf *es_vrf; | |
2656 | ||
2657 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2658 | ||
2659 | es_vrf->es = es; | |
2660 | es_vrf->bgp_vrf = bgp_vrf; | |
2661 | ||
2662 | /* insert into the VRF-ESI rb tree */ | |
2663 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2664 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2665 | return NULL; | |
2666 | } | |
2667 | ||
2668 | /* add to the ES's VRF list */ | |
2669 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2670 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2671 | ||
2672 | /* setup the L3 NHG id for the ES */ | |
2673 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2674 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2675 | ||
c589d847 | 2676 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2677 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2678 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2679 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2680 | ||
36dd4574 AK |
2681 | /* update paths in the VRF that may already be associated with |
2682 | * this destination ES | |
2683 | */ | |
58bff4d1 | 2684 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2685 | |
c589d847 AK |
2686 | return es_vrf; |
2687 | } | |
2688 | ||
2689 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2690 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2691 | { | |
2692 | struct bgp_evpn_es *es = es_vrf->es; | |
2693 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2694 | ||
2695 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2696 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2697 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2698 | ||
2699 | /* Remove the NHG resources */ | |
2700 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2701 | if (es_vrf->nhg_id) | |
2702 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2703 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2704 | if (es_vrf->v6_nhg_id) |
2705 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2706 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2707 | |
2708 | /* remove from the ES's VRF list */ | |
2709 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2710 | ||
2711 | /* remove from the VRF-ESI rb tree */ | |
2712 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2713 | ||
d656e0ae AK |
2714 | /* update paths in the VRF that may already be associated with |
2715 | * this destination ES | |
2716 | */ | |
58bff4d1 | 2717 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2718 | |
c589d847 AK |
2719 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2720 | } | |
2721 | ||
2722 | /* deref and delete if there are no references */ | |
2723 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2724 | { | |
2725 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2726 | ||
2727 | if (!es_vrf) | |
2728 | return; | |
2729 | ||
2730 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2731 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2732 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2733 | es_vrf->bgp_vrf->vrf_id); | |
2734 | ||
2735 | es_evi->es_vrf = NULL; | |
2736 | if (es_vrf->ref_cnt) | |
2737 | --es_vrf->ref_cnt; | |
2738 | ||
2739 | if (!es_vrf->ref_cnt) | |
2740 | bgp_evpn_es_vrf_delete(es_vrf); | |
2741 | } | |
2742 | ||
2743 | /* find or create and reference */ | |
2744 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2745 | { | |
2746 | struct bgp_evpn_es *es = es_evi->es; | |
2747 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2748 | struct bgp *old_bgp_vrf = NULL; | |
2749 | ||
2750 | if (es_vrf) | |
2751 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2752 | ||
2753 | if (old_bgp_vrf == bgp_vrf) | |
2754 | return; | |
2755 | ||
2756 | /* deref the old ES-VRF */ | |
2757 | bgp_evpn_es_vrf_deref(es_evi); | |
2758 | ||
2759 | if (!bgp_vrf) | |
2760 | return; | |
2761 | ||
2762 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2763 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2764 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2765 | ||
2766 | /* find-create the new ES-VRF */ | |
2767 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2768 | if (!es_vrf) | |
2769 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2770 | if (!es_vrf) | |
2771 | return; | |
2772 | ||
2773 | es_evi->es_vrf = es_vrf; | |
2774 | ++es_vrf->ref_cnt; | |
2775 | } | |
2776 | ||
2777 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2778 | * associated ES-EVI entries | |
2779 | */ | |
2780 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2781 | { | |
2782 | struct bgp_evpn_es_evi *es_evi; | |
2783 | ||
2784 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2785 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2786 | ||
2787 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2788 | bgp_evpn_es_vrf_deref(es_evi); | |
2789 | } | |
2790 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2791 | { | |
2792 | struct bgp_evpn_es_evi *es_evi; | |
2793 | ||
2794 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2795 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2796 | ||
2797 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2798 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2799 | } | |
2800 | ||
58bff4d1 AK |
2801 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2802 | * multi-path list. | |
2803 | * 2. If ES-VRF is present - | |
2804 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2805 | * all the PEs attached to the VRF are down) do not install the route | |
2806 | * in zebra. | |
2807 | * - if L3NHG has been activated install the route via that L3NHG | |
2808 | */ | |
2809 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2810 | bool *is_l3nhg_active, | |
2811 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2812 | { |
2813 | struct bgp_evpn_es *es; | |
2814 | struct bgp_evpn_es_vrf *es_vrf; | |
2815 | ||
2816 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2817 | return; |
36dd4574 AK |
2818 | |
2819 | es = bgp_evpn_es_find(esi); | |
2820 | if (!es) | |
58bff4d1 | 2821 | return; |
36dd4574 AK |
2822 | |
2823 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2824 | if (!es_vrf) | |
58bff4d1 AK |
2825 | return; |
2826 | ||
2827 | *use_l3nhg = true; | |
2828 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2829 | *is_l3nhg_active = true; | |
36dd4574 AK |
2830 | if (es_vrf_p) |
2831 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2832 | } |
2833 | ||
6348981a AK |
2834 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2835 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2836 | uint32_t *nhg_p) | |
2837 | { | |
2838 | esi_t *esi; | |
36dd4574 | 2839 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2840 | struct bgp_path_info *parent_pi; |
2841 | struct bgp_node *rn; | |
2842 | struct prefix_evpn *evp; | |
2843 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2844 | bool use_l3nhg = false; |
2845 | bool is_l3nhg_active = false; | |
6348981a AK |
2846 | |
2847 | *nhg_p = 0; | |
2848 | ||
9f570418 AK |
2849 | /* we don't support NHG for routes leaked from another VRF yet */ |
2850 | if (pi->extra && pi->extra->bgp_orig) | |
2851 | return false; | |
2852 | ||
6348981a AK |
2853 | parent_pi = get_route_parent_evpn(pi); |
2854 | if (!parent_pi) | |
2855 | return false; | |
2856 | ||
2857 | rn = parent_pi->net; | |
2858 | if (!rn) | |
2859 | return false; | |
2860 | ||
2861 | evp = (struct prefix_evpn *)&rn->p; | |
2862 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2863 | return false; | |
2864 | ||
6348981a AK |
2865 | /* non-es path, use legacy-exploded multipath */ |
2866 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2867 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2868 | return false; | |
2869 | ||
58bff4d1 AK |
2870 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2871 | &es_vrf); | |
2872 | ||
36dd4574 | 2873 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2874 | if (!use_l3nhg) |
36dd4574 AK |
2875 | return false; |
2876 | ||
2877 | /* if the NHG has not been installed we cannot install the route yet, | |
2878 | * return a 0-NHG to indicate that | |
6348981a | 2879 | */ |
58bff4d1 | 2880 | if (!is_l3nhg_active) |
6348981a AK |
2881 | return true; |
2882 | ||
2883 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2884 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2885 | *nhg_p = es_vrf->v6_nhg_id; |
2886 | else | |
2887 | *nhg_p = es_vrf->nhg_id; | |
2888 | ||
2889 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2890 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2891 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2892 | * the NHG associated with the ES. fallback to legacy-exploded |
2893 | * multipath | |
2894 | */ | |
2895 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2896 | sizeof(*esi))) | |
2897 | return false; | |
2898 | } | |
2899 | ||
2900 | return true; | |
2901 | } | |
2902 | ||
229587fb AK |
2903 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2904 | struct bgp_evpn_es_vrf *es_vrf, | |
2905 | json_object *json) | |
2906 | { | |
2907 | struct bgp_evpn_es *es = es_vrf->es; | |
2908 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2909 | ||
2910 | if (json) { | |
2911 | json_object *json_types; | |
2912 | ||
2913 | json_object_string_add(json, "esi", es->esi_str); | |
2914 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2915 | ||
2916 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2917 | json_types = json_object_new_array(); | |
2918 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2919 | json_array_string_add(json_types, "active"); | |
2920 | json_object_object_add(json, "flags", json_types); | |
2921 | } | |
2922 | ||
2923 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2924 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2925 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2926 | } else { | |
2927 | char flags_str[4]; | |
2928 | ||
2929 | flags_str[0] = '\0'; | |
2930 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2931 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2932 | ||
2933 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2934 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2935 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2936 | } | |
2937 | } | |
2938 | ||
2939 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2940 | struct bgp_evpn_es *es) | |
2941 | { | |
2942 | json_object *json = NULL; | |
2943 | struct listnode *es_vrf_node; | |
2944 | struct bgp_evpn_es_vrf *es_vrf; | |
2945 | ||
2946 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2947 | /* create a separate json object for each ES-VRF */ | |
2948 | if (json_array) | |
2949 | json = json_object_new_object(); | |
2950 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2951 | /* add ES-VRF to the json array */ | |
2952 | if (json_array) | |
2953 | json_object_array_add(json_array, json); | |
2954 | } | |
2955 | } | |
2956 | ||
2957 | /* Display all ES VRFs */ | |
2958 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
2959 | { | |
2960 | json_object *json_array = NULL; | |
2961 | ||
2962 | if (uj) { | |
2963 | /* create an array of ESs */ | |
2964 | json_array = json_object_new_array(); | |
2965 | } else { | |
2966 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
2967 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
2968 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
2969 | } | |
2970 | ||
2971 | if (es) { | |
2972 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2973 | } else { | |
2974 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
2975 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
2976 | } | |
2977 | ||
2978 | /* print the array of json-ESs */ | |
2979 | if (uj) { | |
2980 | vty_out(vty, "%s\n", | |
2981 | json_object_to_json_string_ext( | |
2982 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2983 | json_object_free(json_array); | |
2984 | } | |
2985 | } | |
2986 | ||
2987 | /* Display specific ES VRF */ | |
2988 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2989 | { | |
2990 | struct bgp_evpn_es *es; | |
2991 | ||
2992 | es = bgp_evpn_es_find(esi); | |
2993 | if (es) { | |
2994 | bgp_evpn_es_vrf_show(vty, uj, es); | |
2995 | } else { | |
2996 | if (!uj) | |
2997 | vty_out(vty, "ESI not found\n"); | |
2998 | } | |
2999 | } | |
3000 | ||
c44ab6f1 AK |
3001 | /*****************************************************************************/ |
3002 | /* Ethernet Segment to EVI association - | |
3003 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
3004 | * (bgpevpn->es_evi_rb_tree). | |
3005 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
3006 | * advertises an EAD-EVI (Type-1 EVPN) route | |
3007 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
3008 | * it. | |
3009 | */ | |
3010 | ||
3011 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
3012 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
3013 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
3014 | * VTEPs for which both routes have been rxed are activated. Activation | |
3015 | * creates a NHG in the parent ES. | |
3016 | */ | |
3017 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
3018 | { | |
3019 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
3020 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
3021 | ||
3022 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
3023 | } | |
3024 | ||
3025 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
3026 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3027 | { | |
3028 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3029 | ||
3030 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
3031 | ||
3032 | evi_vtep->es_evi = es_evi; | |
3033 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
3034 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
3035 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3036 | ||
3037 | return evi_vtep; | |
3038 | } | |
3039 | ||
3040 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3041 | { | |
3042 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
3043 | ||
3044 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
3045 | /* as long as there is some reference we can't free it */ | |
3046 | return; | |
3047 | ||
3048 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3049 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
3050 | } | |
3051 | ||
3052 | /* check if VTEP is already part of the list */ | |
3053 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
3054 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3055 | { | |
3056 | struct listnode *node = NULL; | |
3057 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3058 | ||
3059 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3060 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
3061 | return evi_vtep; | |
3062 | } | |
3063 | return NULL; | |
3064 | } | |
3065 | ||
3066 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
3067 | * EAD-per-EVI routes are rxed from it. | |
3068 | */ | |
3069 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
3070 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3071 | { | |
3072 | bool old_active; | |
3073 | bool new_active; | |
fe8293c3 | 3074 | uint32_t ead_activity_flags; |
c44ab6f1 AK |
3075 | |
3076 | old_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3077 | ||
fe8293c3 AK |
3078 | if (bgp_mh_info->ead_evi_rx) |
3079 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
3080 | * before it can be activated. | |
3081 | */ | |
3082 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
3083 | else | |
3084 | /* EAD-per-ES is sufficent to activate the PE */ | |
3085 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
3086 | ||
3087 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
3088 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
3089 | else | |
3090 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3091 | ||
3092 | new_active = !!CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3093 | ||
3094 | if (old_active == new_active) | |
3095 | return; | |
3096 | ||
3097 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3098 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3099 | evi_vtep->es_evi->es->esi_str, | |
3100 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3101 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3102 | |
3103 | /* add VTEP to parent es */ | |
3104 | if (new_active) { | |
3105 | struct bgp_evpn_es_vtep *es_vtep; | |
3106 | ||
3107 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
3108 | evi_vtep->vtep_ip, false /*esr*/, |
3109 | 0, 0); | |
c44ab6f1 AK |
3110 | evi_vtep->es_vtep = es_vtep; |
3111 | } else { | |
3112 | if (evi_vtep->es_vtep) { | |
3113 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3114 | false /*esr*/); | |
3115 | evi_vtep->es_vtep = NULL; | |
3116 | } | |
3117 | } | |
3118 | /* queue up the parent es for background consistency checks */ | |
3119 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3120 | } | |
3121 | ||
3122 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3123 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3124 | bool ead_es) | |
3125 | { | |
3126 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3127 | ||
3128 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3129 | ||
3130 | if (!evi_vtep) | |
3131 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3132 | ||
3133 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3134 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3135 | evi_vtep->es_evi->es->esi_str, | |
3136 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3137 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3138 | |
3139 | if (ead_es) | |
3140 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3141 | else | |
3142 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3143 | ||
3144 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3145 | } | |
3146 | ||
3147 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3148 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3149 | bool ead_es) | |
3150 | { | |
3151 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3152 | ||
3153 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3154 | if (!evi_vtep) | |
3155 | return; | |
3156 | ||
3157 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3158 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3159 | evi_vtep->es_evi->es->esi_str, | |
3160 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3161 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3162 | |
3163 | if (ead_es) | |
3164 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3165 | else | |
3166 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3167 | ||
3168 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3169 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3170 | } | |
3171 | ||
3172 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3173 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3174 | const struct bgp_evpn_es_evi *es_evi2) | |
3175 | { | |
3176 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3177 | } | |
3178 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3179 | ||
3180 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3181 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3182 | struct bgpevpn *vpn) | |
3183 | { | |
3184 | struct bgp_evpn_es_evi es_evi; | |
3185 | ||
3186 | es_evi.es = es; | |
3187 | ||
3188 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3189 | } | |
3190 | ||
3191 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3192 | * tables. | |
3193 | */ | |
3194 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3195 | struct bgpevpn *vpn) | |
3196 | { | |
3197 | struct bgp_evpn_es_evi *es_evi; | |
3198 | ||
3199 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3200 | ||
3201 | es_evi->es = es; | |
3202 | es_evi->vpn = vpn; | |
3203 | ||
3204 | /* Initialise the VTEP list */ | |
3205 | es_evi->es_evi_vtep_list = list_new(); | |
3206 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3207 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3208 | ||
3209 | /* insert into the VNI-ESI rb tree */ | |
3210 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3211 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3212 | return NULL; | |
3213 | } | |
3214 | ||
3215 | /* add to the ES's VNI list */ | |
3216 | listnode_init(&es_evi->es_listnode, es_evi); | |
3217 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3218 | ||
c589d847 AK |
3219 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3220 | ||
c44ab6f1 AK |
3221 | return es_evi; |
3222 | } | |
3223 | ||
3224 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3225 | * up the memory. | |
3226 | */ | |
333ad64b AK |
3227 | static struct bgp_evpn_es_evi * |
3228 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3229 | { |
3230 | struct bgp_evpn_es *es = es_evi->es; | |
3231 | struct bgpevpn *vpn = es_evi->vpn; | |
3232 | ||
3233 | /* cannot free the element as long as there is a local or remote | |
3234 | * reference | |
3235 | */ | |
3236 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3237 | return es_evi; |
c44ab6f1 | 3238 | |
c589d847 AK |
3239 | bgp_evpn_es_vrf_deref(es_evi); |
3240 | ||
c44ab6f1 AK |
3241 | /* remove from the ES's VNI list */ |
3242 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3243 | ||
3244 | /* remove from the VNI-ESI rb tree */ | |
3245 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3246 | ||
3247 | /* free the VTEP list */ | |
3248 | list_delete(&es_evi->es_evi_vtep_list); | |
3249 | ||
3250 | /* remove from the VNI-ESI rb tree */ | |
3251 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3252 | |
3253 | return NULL; | |
c44ab6f1 AK |
3254 | } |
3255 | ||
3256 | /* init local info associated with the ES-EVI */ | |
3257 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3258 | { | |
3259 | struct bgpevpn *vpn = es_evi->vpn; | |
3260 | ||
3261 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3262 | return; | |
3263 | ||
3264 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3265 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3266 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3267 | } | |
3268 | ||
3269 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3270 | static struct bgp_evpn_es_evi * |
3271 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3272 | { |
3273 | struct bgpevpn *vpn = es_evi->vpn; | |
3274 | ||
3275 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3276 | return es_evi; |
c44ab6f1 AK |
3277 | |
3278 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3279 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3280 | ||
333ad64b | 3281 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3282 | } |
3283 | ||
3284 | /* eval remote info associated with the ES */ | |
3285 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3286 | { | |
3287 | struct bgp_evpn_es *es = es_evi->es; | |
3288 | ||
3289 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3290 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3291 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3292 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3293 | ++es->remote_es_evi_cnt; | |
3294 | /* set remote on the parent es */ | |
3295 | bgp_evpn_es_remote_info_re_eval(es); | |
3296 | } | |
3297 | } else { | |
3298 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3299 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3300 | if (es->remote_es_evi_cnt) | |
3301 | --es->remote_es_evi_cnt; | |
3302 | bgp_evpn_es_evi_free(es_evi); | |
3303 | /* check if "remote" can be cleared from the | |
3304 | * parent es. | |
3305 | */ | |
3306 | bgp_evpn_es_remote_info_re_eval(es); | |
3307 | } | |
3308 | } | |
3309 | } | |
3310 | ||
333ad64b AK |
3311 | static struct bgp_evpn_es_evi * |
3312 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3313 | { |
3314 | struct prefix_evpn p; | |
3315 | struct bgp_evpn_es *es = es_evi->es; | |
3316 | struct bgp *bgp; | |
3317 | ||
3318 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3319 | return es_evi; |
c44ab6f1 AK |
3320 | |
3321 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3322 | zlog_debug("del local es %s evi %u", | |
3323 | es_evi->es->esi_str, | |
3324 | es_evi->vpn->vni); | |
3325 | ||
3326 | bgp = bgp_get_evpn(); | |
3327 | ||
3328 | if (bgp) { | |
3329 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3330 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3331 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3332 | &es->esi, es->originator_ip); | |
3333 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3334 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3335 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3336 | bgp->vrf_id, es->esi_str, | |
3337 | es_evi->vpn->vni); | |
3338 | } | |
3339 | ||
3340 | /* withdraw and delete EAD-EVI */ | |
3341 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3342 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3343 | &es->esi, es->originator_ip); | |
3344 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3345 | es, es_evi->vpn, &p)) | |
3346 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3347 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3348 | bgp->vrf_id, es->esi_str, | |
3349 | es_evi->vpn->vni); | |
3350 | } | |
3351 | } | |
3352 | ||
333ad64b | 3353 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3354 | } |
3355 | ||
3356 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3357 | { | |
3358 | struct bgpevpn *vpn; | |
3359 | struct bgp_evpn_es *es; | |
3360 | struct bgp_evpn_es_evi *es_evi; | |
3361 | char buf[ESI_STR_LEN]; | |
3362 | ||
3363 | es = bgp_evpn_es_find(esi); | |
3364 | if (!es) { | |
3365 | flog_err( | |
3366 | EC_BGP_ES_CREATE, | |
3367 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3368 | bgp->vrf_id, vni, | |
3369 | esi_to_str(esi, buf, sizeof(buf))); | |
3370 | return -1; | |
3371 | } | |
3372 | ||
3373 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3374 | if (!vpn) { | |
3375 | flog_err( | |
3376 | EC_BGP_ES_CREATE, | |
3377 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3378 | bgp->vrf_id, vni, es->esi_str); | |
3379 | return -1; | |
3380 | } | |
3381 | ||
3382 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3383 | if (!es_evi) { | |
3384 | flog_err( | |
3385 | EC_BGP_ES_CREATE, | |
3386 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3387 | bgp->vrf_id, vni, es->esi_str); | |
3388 | return -1; | |
3389 | } | |
3390 | ||
3391 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3392 | return 0; | |
3393 | } | |
3394 | ||
3395 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3396 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3397 | { | |
3398 | struct bgpevpn *vpn; | |
3399 | struct prefix_evpn p; | |
3400 | struct bgp_evpn_es *es; | |
3401 | struct bgp_evpn_es_evi *es_evi; | |
3402 | char buf[ESI_STR_LEN]; | |
3403 | ||
3404 | es = bgp_evpn_es_find(esi); | |
3405 | if (!es) { | |
3406 | flog_err( | |
3407 | EC_BGP_ES_CREATE, | |
3408 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3409 | bgp->vrf_id, vni, | |
3410 | esi_to_str(esi, buf, sizeof(buf))); | |
3411 | return -1; | |
3412 | } | |
3413 | ||
3414 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3415 | if (!vpn) { | |
3416 | flog_err( | |
3417 | EC_BGP_ES_CREATE, | |
3418 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3419 | bgp->vrf_id, vni, es->esi_str); | |
3420 | return -1; | |
3421 | } | |
3422 | ||
3423 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3424 | zlog_debug("add local es %s evi %u", | |
3425 | es->esi_str, vni); | |
3426 | ||
3427 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3428 | ||
3429 | if (es_evi) { | |
3430 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3431 | /* dup */ | |
3432 | return 0; | |
3433 | } else { | |
3434 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3435 | if (!es_evi) | |
3436 | return -1; | |
3437 | } | |
3438 | ||
3439 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3440 | ||
3441 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3442 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3443 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3444 | es->originator_ip); | |
c44ab6f1 AK |
3445 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3446 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3447 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3448 | bgp->vrf_id, es->esi_str, vni); | |
3449 | } | |
3450 | ||
3451 | /* update EAD-ES */ | |
3452 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3453 | &es->esi, es->originator_ip); | |
74be8313 | 3454 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3455 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3456 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3457 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3458 | bgp->vrf_id, es->esi_str, vni); | |
3459 | } | |
3460 | ||
3461 | return 0; | |
3462 | } | |
3463 | ||
3464 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3465 | * ES-EVI is implicity created on first VTEP's reference. | |
3466 | */ | |
3467 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3468 | const struct prefix_evpn *p) | |
3469 | { | |
3470 | char buf[ESI_STR_LEN]; | |
3471 | struct bgp_evpn_es *es; | |
3472 | struct bgp_evpn_es_evi *es_evi; | |
3473 | bool ead_es; | |
3474 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3475 | ||
3476 | if (!vpn) | |
3477 | /* local EAD-ES need not be sent back to zebra */ | |
3478 | return 0; | |
3479 | ||
3480 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3481 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3482 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3483 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3484 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3485 | |
3486 | es = bgp_evpn_es_find(esi); | |
3487 | if (!es) { | |
3488 | es = bgp_evpn_es_new(bgp, esi); | |
3489 | if (!es) { | |
3490 | flog_err(EC_BGP_ES_CREATE, | |
3491 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3492 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3493 | return -1; | |
3494 | } | |
3495 | } | |
3496 | ||
3497 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3498 | if (!es_evi) { | |
3499 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3500 | if (!es_evi) { | |
45a859f1 | 3501 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3502 | return -1; |
3503 | } | |
3504 | } | |
3505 | ||
3506 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3507 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3508 | ead_es); | |
3509 | ||
3510 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3511 | return 0; | |
3512 | } | |
3513 | ||
3514 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3515 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3516 | */ | |
3517 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3518 | const struct prefix_evpn *p) | |
3519 | { | |
3520 | char buf[ESI_STR_LEN]; | |
3521 | struct bgp_evpn_es *es; | |
3522 | struct bgp_evpn_es_evi *es_evi; | |
3523 | bool ead_es; | |
3524 | ||
3525 | if (!vpn) | |
3526 | /* local EAD-ES need not be sent back to zebra */ | |
3527 | return 0; | |
3528 | ||
3529 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3530 | zlog_debug( |
3531 | "del remote %s es %s evi %u vtep %pI4", | |
3532 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3533 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3534 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3535 | |
3536 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3537 | if (!es) { |
3538 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3539 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3540 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3541 | : "ead-evi", | |
3542 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3543 | sizeof(buf)), | |
3544 | vpn->vni, | |
3545 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3546 | return 0; |
2eef4f20 | 3547 | } |
c44ab6f1 | 3548 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3549 | if (!es_evi) { |
3550 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3551 | zlog_debug( | |
3552 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3553 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3554 | : "ead-evi", | |
3555 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3556 | sizeof(buf)), | |
3557 | vpn->vni, | |
3558 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3559 | return 0; |
2eef4f20 | 3560 | } |
c44ab6f1 AK |
3561 | |
3562 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3563 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3564 | ead_es); | |
3565 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3566 | return 0; | |
3567 | } | |
3568 | ||
333ad64b AK |
3569 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3570 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3571 | { | |
3572 | struct listnode *node = NULL; | |
3573 | struct listnode *nnode = NULL; | |
3574 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3575 | struct bgp *bgp; | |
3576 | ||
3577 | bgp = bgp_get_evpn(); | |
3578 | if (!bgp) | |
3579 | return; | |
3580 | ||
3581 | /* delete all VTEPs */ | |
3582 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3583 | evi_vtep)) { | |
3584 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3585 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3586 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3587 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3588 | } | |
3589 | /* delete the EVI */ | |
3590 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3591 | } | |
3592 | ||
c44ab6f1 AK |
3593 | /* Initialize the ES tables maintained per-L2_VNI */ |
3594 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3595 | { | |
3596 | /* Initialize the ES-EVI RB tree */ | |
3597 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3598 | ||
3599 | /* Initialize the local list maintained for quick walks by type */ | |
3600 | vpn->local_es_evi_list = list_new(); | |
3601 | listset_app_node_mem(vpn->local_es_evi_list); | |
3602 | } | |
3603 | ||
3604 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3605 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3606 | { | |
3607 | struct bgp_evpn_es_evi *es_evi; | |
3608 | struct bgp_evpn_es_evi *es_evi_next; | |
3609 | ||
3610 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3611 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3612 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3613 | if (es_evi) | |
3614 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3615 | } |
3616 | ||
3617 | list_delete(&vpn->local_es_evi_list); | |
3618 | } | |
3619 | ||
3620 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3621 | struct bgp_evpn_es_evi *es_evi, |
3622 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3623 | { |
3624 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3625 | struct listnode *node; | |
3626 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3627 | bool first = true; | |
ec779825 | 3628 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3629 | |
3630 | vtep_str[0] = '\0'; | |
3631 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3632 | vtep_flag_str[0] = '\0'; | |
3633 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3634 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3635 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3636 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3637 | |
9e0c2fd1 AK |
3638 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3639 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3640 | if (first) | |
c44ab6f1 | 3641 | first = false; |
9e0c2fd1 AK |
3642 | else |
3643 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3644 | strlcat(vtep_str, |
ec779825 AK |
3645 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3646 | sizeof(ip_buf)), | |
23d0a753 | 3647 | vtep_str_size); |
9e0c2fd1 AK |
3648 | strlcat(vtep_str, "(", vtep_str_size); |
3649 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3650 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3651 | } |
3652 | ||
3653 | return vtep_str; | |
3654 | } | |
3655 | ||
3656 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3657 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3658 | { | |
3659 | json_object *json_vtep_entry; | |
3660 | json_object *json_flags; | |
ec779825 | 3661 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3662 | |
3663 | json_vtep_entry = json_object_new_object(); | |
3664 | ||
ec779825 AK |
3665 | json_object_string_add( |
3666 | json_vtep_entry, "vtep_ip", | |
3667 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3668 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3669 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3670 | json_flags = json_object_new_array(); | |
3671 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3672 | json_array_string_add(json_flags, "ead-per-es"); | |
3673 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3674 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3675 | json_object_object_add(json_vtep_entry, |
3676 | "flags", json_flags); | |
3677 | } | |
3678 | ||
3679 | json_object_array_add(json_vteps, | |
3680 | json_vtep_entry); | |
3681 | } | |
3682 | ||
3683 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3684 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3685 | { | |
3686 | struct listnode *node; | |
3687 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3688 | ||
3689 | if (json) { | |
3690 | json_object *json_vteps; | |
3691 | json_object *json_types; | |
3692 | ||
3693 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3694 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3695 | ||
3696 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3697 | BGP_EVPNES_EVI_REMOTE)) { | |
3698 | json_types = json_object_new_array(); | |
3699 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3700 | json_array_string_add(json_types, "local"); | |
3701 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3702 | json_array_string_add(json_types, "remote"); | |
3703 | json_object_object_add(json, "type", json_types); | |
3704 | } | |
3705 | ||
3706 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3707 | json_vteps = json_object_new_array(); | |
3708 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3709 | node, evi_vtep)) { | |
3710 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3711 | evi_vtep); | |
3712 | } | |
3713 | json_object_object_add(json, "vteps", json_vteps); | |
3714 | } | |
3715 | } else { | |
3716 | char type_str[4]; | |
3717 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3718 | ||
3719 | type_str[0] = '\0'; | |
3720 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3721 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3722 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3723 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3724 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3725 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3726 | |
9e0c2fd1 | 3727 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3728 | |
3729 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3730 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3731 | type_str, vtep_str); | |
3732 | } | |
3733 | } | |
3734 | ||
3735 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3736 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3737 | { | |
3738 | if (json) { | |
3739 | json_object *json_flags; | |
3740 | ||
3741 | /* Add the "brief" info first */ | |
3742 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3743 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3744 | json_flags = json_object_new_array(); | |
3745 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3746 | json_object_object_add(json, "flags", json_flags); | |
3747 | } | |
3748 | } else { | |
3749 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3750 | char type_str[4]; | |
3751 | ||
3752 | type_str[0] = '\0'; | |
3753 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3754 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3755 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3756 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3757 | |
9e0c2fd1 | 3758 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3759 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3760 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3761 | |
3762 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3763 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3764 | vty_out(vty, " Type: %s\n", type_str); | |
3765 | vty_out(vty, " Inconsistencies: %s\n", | |
3766 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3767 | "es-vtep-mismatch":"-"); | |
3768 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3769 | vty_out(vty, "\n"); | |
3770 | } | |
3771 | } | |
3772 | ||
3773 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3774 | json_object *json_array, bool detail) | |
3775 | { | |
3776 | struct bgp_evpn_es_evi *es_evi; | |
3777 | json_object *json = NULL; | |
3778 | ||
3779 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3780 | if (json_array) | |
3781 | /* create a separate json object for each ES */ | |
3782 | json = json_object_new_object(); | |
3783 | if (detail) | |
3784 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3785 | else | |
3786 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3787 | /* add ES to the json array */ | |
3788 | if (json_array) | |
3789 | json_object_array_add(json_array, json); | |
3790 | } | |
3791 | } | |
3792 | ||
3793 | struct es_evi_show_ctx { | |
3794 | struct vty *vty; | |
3795 | json_object *json; | |
3796 | int detail; | |
3797 | }; | |
3798 | ||
3799 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3800 | void *ctxt) | |
3801 | { | |
3802 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3803 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3804 | ||
3805 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3806 | } | |
3807 | ||
3808 | /* Display all ES EVIs */ | |
3809 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3810 | { | |
3811 | json_object *json_array = NULL; | |
3812 | struct es_evi_show_ctx wctx; | |
3813 | struct bgp *bgp; | |
3814 | ||
3815 | if (uj) { | |
3816 | /* create an array of ES-EVIs */ | |
3817 | json_array = json_object_new_array(); | |
3818 | } | |
3819 | ||
3820 | wctx.vty = vty; | |
3821 | wctx.json = json_array; | |
3822 | wctx.detail = detail; | |
3823 | ||
3824 | bgp = bgp_get_evpn(); | |
3825 | ||
3826 | if (!json_array && !detail) { | |
3827 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3828 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3829 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3830 | "VNI", "ESI", "Flags", "VTEPs"); | |
3831 | } | |
3832 | ||
3833 | if (bgp) | |
3834 | hash_iterate(bgp->vnihash, | |
3835 | (void (*)(struct hash_bucket *, | |
3836 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3837 | &wctx); | |
3838 | if (uj) { | |
3839 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3840 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3841 | json_object_free(json_array); | |
3842 | } | |
3843 | } | |
3844 | ||
3845 | /* Display specific ES EVI */ | |
3846 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3847 | bool uj, bool detail) | |
3848 | { | |
3849 | struct bgpevpn *vpn = NULL; | |
3850 | json_object *json_array = NULL; | |
3851 | struct bgp *bgp; | |
3852 | ||
3853 | if (uj) { | |
3854 | /* create an array of ES-EVIs */ | |
3855 | json_array = json_object_new_array(); | |
3856 | } | |
3857 | ||
3858 | bgp = bgp_get_evpn(); | |
3859 | if (bgp) | |
3860 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3861 | ||
3862 | if (vpn) { | |
3863 | if (!json_array && !detail) { | |
3864 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3865 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3866 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3867 | "VNI", "ESI", "Flags", "VTEPs"); | |
3868 | } | |
3869 | ||
3870 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3871 | } else { | |
3872 | if (!uj) | |
3873 | vty_out(vty, "VNI not found\n"); | |
3874 | } | |
3875 | ||
3876 | if (uj) { | |
3877 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3878 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3879 | json_object_free(json_array); | |
3880 | } | |
3881 | } | |
3882 | ||
3883 | /***************************************************************************** | |
3884 | * Ethernet Segment Consistency checks | |
3885 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3886 | * an inconsistency is detected it is simply logged (and displayed via | |
3887 | * show commands) at this point. A more drastic action can be executed (based | |
3888 | * on user config) in the future. | |
3889 | */ | |
8fc2ffb3 AK |
3890 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3891 | { | |
3892 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3893 | return; | |
3894 | ||
3895 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3896 | zlog_debug("periodic consistency checking started"); | |
3897 | ||
3898 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3899 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3900 | &bgp_mh_info->t_cons_check); | |
3901 | } | |
3902 | ||
c44ab6f1 AK |
3903 | /* queue up the es for background consistency checks */ |
3904 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3905 | { | |
3906 | if (!bgp_mh_info->consistency_checking) | |
3907 | /* consistency checking is not enabled */ | |
3908 | return; | |
3909 | ||
3910 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3911 | /* already queued for consistency checking */ | |
3912 | return; | |
3913 | ||
8fc2ffb3 AK |
3914 | /* start the periodic timer for consistency checks if it is not |
3915 | * already running */ | |
3916 | bgp_evpn_es_cons_checks_timer_start(); | |
3917 | ||
c44ab6f1 AK |
3918 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3919 | listnode_init(&es->pend_es_listnode, es); | |
3920 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3921 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3922 | &es->pend_es_listnode); | |
3923 | } | |
3924 | ||
3925 | /* pull the ES from the consistency check list */ | |
3926 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3927 | { | |
3928 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3929 | return; | |
3930 | ||
3931 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3932 | list_delete_node(bgp_mh_info->pend_es_list, | |
3933 | &es->pend_es_listnode); | |
3934 | } | |
3935 | ||
3936 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3937 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3938 | struct bgp_evpn_es_evi *es_evi) | |
3939 | { | |
3940 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3941 | struct listnode *node; | |
3942 | uint32_t vtep_cnt = 0; | |
3943 | ||
3944 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3945 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3946 | ++vtep_cnt; | |
3947 | } | |
3948 | ||
3949 | return vtep_cnt; | |
3950 | } | |
3951 | ||
3952 | /* Number of active VTEPs associated with the ES */ | |
3953 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3954 | { | |
3955 | struct listnode *node; | |
3956 | uint32_t vtep_cnt = 0; | |
3957 | struct bgp_evpn_es_vtep *es_vtep; | |
3958 | ||
3959 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
3960 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3961 | ++vtep_cnt; | |
3962 | } | |
3963 | ||
3964 | return vtep_cnt; | |
3965 | } | |
3966 | ||
3967 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
3968 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
3969 | { | |
3970 | struct listnode *node; | |
3971 | struct bgp_evpn_es_vtep *next_es_vtep; | |
3972 | ||
3973 | if (es_vtep) | |
3974 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
3975 | else | |
3976 | node = listhead(es->es_vtep_list); | |
3977 | ||
3978 | for (; node; node = listnextnode_unchecked(node)) { | |
3979 | next_es_vtep = listgetdata(node); | |
3980 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
3981 | return next_es_vtep; | |
3982 | } | |
3983 | ||
3984 | return NULL; | |
3985 | } | |
3986 | ||
3987 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
3988 | struct bgp_evpn_es_evi *es_evi, | |
3989 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3990 | { | |
3991 | struct listnode *node; | |
3992 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
3993 | ||
3994 | if (evi_vtep) | |
3995 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
3996 | else | |
3997 | node = listhead(es_evi->es_evi_vtep_list); | |
3998 | ||
3999 | for (; node; node = listnextnode_unchecked(node)) { | |
4000 | next_evi_vtep = listgetdata(node); | |
4001 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4002 | return next_evi_vtep; | |
4003 | } | |
4004 | ||
4005 | return NULL; | |
4006 | } | |
4007 | ||
4008 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
4009 | { | |
4010 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
4011 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4012 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
4013 | es_evi->es->esi_str, | |
4014 | es_evi->vpn->vni); | |
4015 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4016 | ||
4017 | /* update parent ES with the incosistency setting */ | |
4018 | if (!es_evi->es->incons_evi_vtep_cnt && | |
4019 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4020 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
4021 | es_evi->es->esi_str); | |
4022 | ++es_evi->es->incons_evi_vtep_cnt; | |
4023 | SET_FLAG(es_evi->es->inconsistencies, | |
4024 | BGP_EVPNES_INCONS_VTEP_LIST); | |
4025 | } | |
4026 | } | |
4027 | ||
4028 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
4029 | { | |
4030 | int proc_cnt = 0; | |
4031 | int es_active_vtep_cnt; | |
4032 | int evi_active_vtep_cnt; | |
4033 | struct bgp_evpn_es_evi *es_evi; | |
4034 | struct listnode *evi_node; | |
4035 | struct bgp_evpn_es_vtep *es_vtep; | |
4036 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4037 | ||
4038 | /* reset the inconsistencies and re-evaluate */ | |
4039 | es->incons_evi_vtep_cnt = 0; | |
4040 | es->inconsistencies = 0; | |
4041 | ||
4042 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
4043 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
4044 | evi_node, es_evi)) { | |
4045 | ++proc_cnt; | |
4046 | ||
4047 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
4048 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4049 | ||
4050 | evi_active_vtep_cnt = | |
4051 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
4052 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
4053 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4054 | continue; | |
4055 | } | |
4056 | ||
4057 | if (!es_active_vtep_cnt) | |
4058 | continue; | |
4059 | ||
4060 | es_vtep = NULL; | |
4061 | evi_vtep = NULL; | |
4062 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
4063 | es, es_vtep))) { | |
4064 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
4065 | evi_vtep); | |
4066 | if (!evi_vtep) { | |
4067 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4068 | break; | |
4069 | } | |
4070 | if (es_vtep->vtep_ip.s_addr != | |
4071 | evi_vtep->vtep_ip.s_addr) { | |
4072 | /* inconsistency detected; set it and move | |
4073 | * to the next evi | |
4074 | */ | |
4075 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4076 | break; | |
4077 | } | |
4078 | } | |
4079 | } | |
4080 | ||
4081 | return proc_cnt; | |
4082 | } | |
4083 | ||
4084 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
4085 | { | |
4086 | int proc_cnt = 0; | |
4087 | int es_cnt = 0; | |
4088 | struct listnode *node; | |
4089 | struct listnode *nextnode; | |
4090 | struct bgp_evpn_es *es; | |
4091 | ||
4092 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
4093 | node, nextnode, es)) { | |
4094 | ++es_cnt; | |
4095 | ++proc_cnt; | |
4096 | /* run consistency checks on the ES and remove it from the | |
4097 | * pending list | |
4098 | */ | |
4099 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4100 | bgp_evpn_es_cons_checks_pend_del(es); | |
4101 | if (proc_cnt > 500) | |
4102 | break; | |
4103 | } | |
4104 | ||
4105 | /* restart the timer */ | |
4106 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4107 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4108 | &bgp_mh_info->t_cons_check); | |
4109 | ||
4110 | return 0; | |
4111 | } | |
4112 | ||
090efa2f AK |
4113 | /***************************************************************************** |
4114 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4115 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4116 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4117 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4118 | * | |
4119 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4120 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4121 | * RMAC info). | |
4122 | ****************************************************************************/ | |
4123 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4124 | { | |
4125 | struct stream *s; | |
4126 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4127 | ||
4128 | /* Check socket. */ | |
4129 | if (!zclient || zclient->sock < 0) | |
4130 | return; | |
4131 | ||
4132 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4133 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4134 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4135 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4136 | add ? "adding" : "deleting", nh->nh_str); | |
4137 | return; | |
4138 | } | |
4139 | ||
4140 | s = zclient->obuf; | |
4141 | stream_reset(s); | |
4142 | ||
4143 | zclient_create_header( | |
4144 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4145 | bgp_vrf->vrf_id); | |
4146 | stream_putl(s, bgp_vrf->vrf_id); | |
4147 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4148 | if (add) | |
4149 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4150 | ||
4151 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4152 | ||
4153 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4154 | if (add) | |
4155 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
4156 | nh->bgp_vrf->name, nh->nh_str, &nh->rmac); | |
4157 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4158 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
4159 | nh->bgp_vrf->name, nh->nh_str); | |
4160 | } | |
4161 | ||
4162 | zclient_send_message(zclient); | |
4163 | } | |
4164 | ||
4165 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4166 | { | |
4167 | if (add && !is_zero_mac(&nh->rmac)) { | |
4168 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4169 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4170 | } else { | |
4171 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4172 | return; | |
4173 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4174 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4175 | } | |
4176 | } | |
4177 | ||
4178 | static void *bgp_evpn_nh_alloc(void *p) | |
4179 | { | |
4180 | struct bgp_evpn_nh *tmp_n = p; | |
4181 | struct bgp_evpn_nh *n; | |
4182 | ||
4183 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4184 | *n = *tmp_n; | |
4185 | ||
4186 | return ((void *)n); | |
4187 | } | |
4188 | ||
4189 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4190 | struct ipaddr *ip) | |
4191 | { | |
4192 | struct bgp_evpn_nh tmp; | |
4193 | struct bgp_evpn_nh *n; | |
4194 | ||
4195 | memset(&tmp, 0, sizeof(tmp)); | |
4196 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4197 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4198 | ||
4199 | return n; | |
4200 | } | |
4201 | ||
4202 | /* Add nexthop entry - implicitly created on first path reference */ | |
4203 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4204 | struct ipaddr *ip, | |
4205 | struct bgp_path_info *pi) | |
4206 | { | |
4207 | struct bgp_evpn_nh tmp_n; | |
4208 | struct bgp_evpn_nh *n = NULL; | |
4209 | ||
4210 | memset(&tmp_n, 0, sizeof(struct bgp_evpn_nh)); | |
4211 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
4212 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4213 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4214 | n->bgp_vrf = bgp_vrf; | |
4215 | ||
4216 | n->pi_list = list_new(); | |
4217 | listset_app_node_mem(n->pi_list); | |
4218 | ||
4219 | /* Setup ref_pi when the nh is created */ | |
4220 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4221 | n->ref_pi = pi; | |
4222 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4223 | } | |
4224 | ||
4225 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4226 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", n->bgp_vrf->name, | |
4227 | n->nh_str, &n->rmac); | |
4228 | bgp_evpn_nh_zebra_update(n, true); | |
4229 | return n; | |
4230 | } | |
4231 | ||
4232 | /* Delete nexthop entry if there are no paths referencing it */ | |
4233 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4234 | { | |
4235 | struct bgp_evpn_nh *tmp_n; | |
4236 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4237 | ||
4238 | if (listcount(n->pi_list)) | |
4239 | return; | |
4240 | ||
4241 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4242 | zlog_debug("evpn vrf %s nh %s del to zebra", bgp_vrf->name, | |
4243 | n->nh_str); | |
4244 | ||
4245 | bgp_evpn_nh_zebra_update(n, false); | |
4246 | list_delete(&n->pi_list); | |
4247 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4248 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4249 | } | |
4250 | ||
4251 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) | |
4252 | { | |
4253 | const struct bgp_evpn_nh *n = p; | |
4254 | const struct ipaddr *ip = &n->ip; | |
4255 | ||
4256 | if (IS_IPADDR_V4(ip)) | |
4257 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4258 | ||
4259 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4260 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4261 | } | |
4262 | ||
4263 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4264 | { | |
4265 | const struct bgp_evpn_nh *n1 = p1; | |
4266 | const struct bgp_evpn_nh *n2 = p2; | |
4267 | ||
4268 | if (n1 == NULL && n2 == NULL) | |
4269 | return true; | |
4270 | ||
4271 | if (n1 == NULL || n2 == NULL) | |
4272 | return false; | |
4273 | ||
4274 | return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0); | |
4275 | } | |
4276 | ||
4277 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4278 | { | |
4279 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4280 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name); | |
4281 | bgp_vrf->evpn_nh_table = hash_create( | |
4282 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4283 | } | |
4284 | ||
4285 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4286 | { | |
4287 | struct listnode *node; | |
4288 | struct listnode *nnode; | |
4289 | struct bgp_path_evpn_nh_info *nh_info; | |
4290 | ||
4291 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4292 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name, | |
4293 | nh->nh_str); | |
4294 | ||
4295 | /* force flush paths */ | |
4296 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4297 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4298 | } | |
4299 | ||
4300 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4301 | { | |
4302 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4303 | ||
4304 | bgp_evpn_nh_flush_entry(nh); | |
4305 | } | |
4306 | ||
4307 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4308 | { | |
4309 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4310 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name); | |
4311 | hash_iterate( | |
4312 | bgp_vrf->evpn_nh_table, | |
4313 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4314 | NULL); | |
4315 | hash_free(bgp_vrf->evpn_nh_table); | |
4316 | bgp_vrf->evpn_nh_table = NULL; | |
4317 | } | |
4318 | ||
4319 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4320 | { | |
4321 | struct listnode *node; | |
4322 | struct bgp_path_info *pi; | |
4323 | struct bgp_path_evpn_nh_info *nh_info; | |
4324 | ||
4325 | if (nh->ref_pi) | |
4326 | return; | |
4327 | ||
4328 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4329 | pi = nh_info->pi; | |
4330 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4331 | continue; | |
4332 | ||
4333 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4334 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
4335 | nh->bgp_vrf->name, nh->nh_str); | |
4336 | nh->ref_pi = pi; | |
4337 | /* If we have a new pi copy rmac from it and update | |
4338 | * zebra if the new rmac is different | |
4339 | */ | |
4340 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4341 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4342 | bgp_evpn_nh_zebra_update(nh, true); | |
4343 | } | |
4344 | break; | |
4345 | } | |
4346 | } | |
4347 | ||
4348 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4349 | struct bgp_path_info *pi) | |
4350 | { | |
4351 | if (nh->ref_pi != pi) | |
4352 | return; | |
4353 | ||
4354 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4355 | zlog_debug("evpn vrf %s nh %s ref_pi clear", nh->bgp_vrf->name, | |
4356 | nh->nh_str); | |
4357 | nh->ref_pi = NULL; | |
4358 | /* try to find another ref_pi */ | |
4359 | bgp_evpn_nh_update_ref_pi(nh); | |
4360 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4361 | if (!nh->ref_pi) { | |
4362 | memset(&nh->rmac, 0, ETH_ALEN); | |
4363 | bgp_evpn_nh_zebra_update(nh, true); | |
4364 | } | |
4365 | } | |
4366 | ||
4367 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4368 | { | |
4369 | bgp_evpn_path_nh_unlink(nh_info); | |
4370 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4371 | } | |
4372 | ||
4373 | static struct bgp_path_evpn_nh_info * | |
4374 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4375 | { | |
4376 | struct bgp_path_info_extra *e; | |
4377 | struct bgp_path_mh_info *mh_info; | |
4378 | struct bgp_path_evpn_nh_info *nh_info; | |
4379 | ||
4380 | e = bgp_path_info_extra_get(pi); | |
4381 | ||
4382 | /* If mh_info doesn't exist allocate it */ | |
4383 | mh_info = e->mh_info; | |
4384 | if (!mh_info) | |
4385 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4386 | sizeof(struct bgp_path_mh_info)); | |
4387 | ||
4388 | /* If nh_info doesn't exist allocate it */ | |
4389 | nh_info = mh_info->nh_info; | |
4390 | if (!nh_info) { | |
4391 | mh_info->nh_info = nh_info = | |
4392 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4393 | sizeof(struct bgp_path_evpn_nh_info)); | |
4394 | nh_info->pi = pi; | |
4395 | } | |
4396 | ||
4397 | return nh_info; | |
4398 | } | |
4399 | ||
4400 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4401 | { | |
4402 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4403 | struct bgp_path_info *pi; | |
4404 | char prefix_buf[PREFIX_STRLEN]; | |
4405 | ||
4406 | if (!nh) | |
4407 | return; | |
4408 | ||
4409 | pi = nh_info->pi; | |
4410 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4411 | zlog_debug("path %s unlinked from nh %s %s", | |
4412 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4413 | sizeof(prefix_buf)) | |
4414 | : "", | |
4415 | nh->bgp_vrf->name, nh->nh_str); | |
4416 | ||
4417 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4418 | ||
4419 | nh_info->nh = NULL; | |
4420 | ||
4421 | /* check if the ref_pi need to be updated */ | |
4422 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4423 | ||
4424 | /* if there are no other references against the nh it | |
4425 | * needs to be freed | |
4426 | */ | |
4427 | bgp_evpn_nh_del(nh); | |
4428 | ||
4429 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4430 | * along with the path. | |
4431 | */ | |
4432 | } | |
4433 | ||
4434 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4435 | { | |
4436 | struct bgp_path_evpn_nh_info *nh_info; | |
4437 | struct bgp_evpn_nh *nh; | |
090efa2f AK |
4438 | struct ipaddr ip; |
4439 | ||
4440 | /* EVPN nexthop setup in bgp has been turned off */ | |
4441 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4442 | return; | |
4443 | ||
4444 | if (!bgp_vrf->evpn_nh_table) { | |
4445 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4446 | zlog_debug("path %pFX linked to vrf %s failed", |
4447 | &pi->net->p, bgp_vrf->name); | |
090efa2f AK |
4448 | return; |
4449 | } | |
4450 | ||
4451 | nh_info = (pi->extra && pi->extra->mh_info) | |
4452 | ? pi->extra->mh_info->nh_info | |
4453 | : NULL; | |
4454 | ||
4455 | /* if NHG is not being used for this path we don't need to manage the | |
4456 | * nexthops in bgp (they are managed by zebra instead) | |
4457 | */ | |
4458 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4459 | if (nh_info) | |
4460 | bgp_evpn_path_nh_unlink(nh_info); | |
4461 | return; | |
4462 | } | |
4463 | ||
4464 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4465 | if (!nh_info) | |
4466 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4467 | ||
4468 | /* find-create nh */ | |
4469 | memset(&ip, 0, sizeof(ip)); | |
4470 | if (pi->net->p.family == AF_INET6) { | |
4471 | SET_IPADDR_V6(&ip); | |
4472 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4473 | sizeof(ip.ipaddr_v6)); | |
4474 | } else { | |
4475 | SET_IPADDR_V4(&ip); | |
4476 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4477 | } | |
4478 | ||
4479 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4480 | if (!nh) | |
4481 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4482 | ||
4483 | /* dup check */ | |
4484 | if (nh_info->nh == nh) { | |
4485 | /* Check if any of the paths are now valid */ | |
4486 | bgp_evpn_nh_update_ref_pi(nh); | |
4487 | return; | |
4488 | } | |
4489 | ||
4490 | /* unlink old nh if any */ | |
4491 | bgp_evpn_path_nh_unlink(nh_info); | |
4492 | ||
4493 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4494 | zlog_debug("path %pFX linked to nh %s %s", &pi->net->p, |
4495 | nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4496 | |
4497 | /* link mac-ip path to the new nh */ | |
4498 | nh_info->nh = nh; | |
4499 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4500 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4501 | /* If a new valid path got linked to the nh see if can get the rmac | |
4502 | * from it | |
4503 | */ | |
4504 | bgp_evpn_nh_update_ref_pi(nh); | |
4505 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4506 | if (!nh->ref_pi) | |
4507 | zlog_debug( | |
70545a29 AK |
4508 | "path %pFX linked to nh %s %s with no valid pi", |
4509 | &pi->net->p, nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4510 | } |
4511 | } | |
4512 | ||
4513 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4514 | { | |
4515 | struct bgp_path_evpn_nh_info *nh_info; | |
4516 | ||
4517 | nh_info = (pi->extra && pi->extra->mh_info) | |
4518 | ? pi->extra->mh_info->nh_info | |
4519 | : NULL; | |
4520 | ||
4521 | if (!nh_info) | |
4522 | return; | |
4523 | ||
4524 | bgp_evpn_path_nh_unlink(nh_info); | |
4525 | } | |
4526 | ||
4527 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4528 | { | |
4529 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4530 | } | |
4531 | ||
4532 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4533 | json_object *json_array) | |
4534 | { | |
4535 | json_object *json = NULL; | |
4536 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4537 | char prefix_buf[PREFIX_STRLEN]; | |
4538 | ||
4539 | if (json_array) | |
4540 | /* create a separate json object for each ES */ | |
4541 | json = json_object_new_object(); | |
4542 | ||
4543 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4544 | if (nh->ref_pi && nh->ref_pi->net) | |
4545 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4546 | else | |
4547 | prefix_buf[0] = '\0'; | |
4548 | if (json) { | |
4549 | json_object_string_add(json, "vrf", nh->bgp_vrf->name); | |
4550 | json_object_string_add(json, "ip", nh->nh_str); | |
4551 | json_object_string_add(json, "rmac", mac_buf); | |
4552 | json_object_string_add(json, "basePath", prefix_buf); | |
4553 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4554 | } else { | |
4555 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", nh->bgp_vrf->name, | |
4556 | nh->nh_str, mac_buf, listcount(nh->pi_list), | |
4557 | prefix_buf); | |
4558 | } | |
4559 | ||
4560 | /* add ES to the json array */ | |
4561 | if (json_array) | |
4562 | json_object_array_add(json_array, json); | |
4563 | } | |
4564 | ||
4565 | struct nh_show_ctx { | |
4566 | struct vty *vty; | |
4567 | json_object *json; | |
4568 | }; | |
4569 | ||
4570 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4571 | { | |
4572 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4573 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4574 | ||
4575 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4576 | } | |
4577 | ||
4578 | /* Display all evpn nexthops */ | |
4579 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4580 | { | |
4581 | json_object *json_array = NULL; | |
4582 | struct bgp *bgp_vrf; | |
4583 | struct listnode *node; | |
4584 | struct nh_show_ctx wctx; | |
4585 | ||
4586 | if (uj) { | |
4587 | /* create an array of nexthops */ | |
4588 | json_array = json_object_new_array(); | |
4589 | } else { | |
4590 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4591 | "RMAC", "#Paths", "Base Path"); | |
4592 | } | |
4593 | ||
4594 | wctx.vty = vty; | |
4595 | wctx.json = json_array; | |
4596 | ||
4597 | /* walk through all vrfs */ | |
4598 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4599 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4600 | (void (*)(struct hash_bucket *, | |
4601 | void *))bgp_evpn_nh_show_hash_cb, | |
4602 | &wctx); | |
4603 | } | |
4604 | ||
4605 | /* print the array of json-ESs */ | |
4606 | if (uj) { | |
4607 | vty_out(vty, "%s\n", | |
4608 | json_object_to_json_string_ext( | |
4609 | json_array, JSON_C_TO_STRING_PRETTY)); | |
4610 | json_object_free(json_array); | |
4611 | } | |
4612 | } | |
4613 | ||
c44ab6f1 AK |
4614 | /*****************************************************************************/ |
4615 | void bgp_evpn_mh_init(void) | |
4616 | { | |
4617 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4618 | ||
4619 | /* setup ES tables */ | |
4620 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4621 | /* local ES list */ | |
4622 | bgp_mh_info->local_es_list = list_new(); | |
4623 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4624 | /* list of ESs with pending processing */ | |
4625 | bgp_mh_info->pend_es_list = list_new(); | |
4626 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4627 | ||
fe8293c3 AK |
4628 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4629 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
4630 | ||
c44ab6f1 AK |
4631 | /* config knobs - XXX add cli to control it */ |
4632 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4633 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
4634 | bgp_mh_info->install_l3nhg = false; |
4635 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 4636 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4637 | bgp_mh_info->bgp_evpn_nh_setup = true; |
c44ab6f1 | 4638 | |
c44ab6f1 AK |
4639 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4640 | } | |
4641 | ||
4642 | void bgp_evpn_mh_finish(void) | |
4643 | { | |
4644 | struct bgp_evpn_es *es; | |
4645 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4646 | |
45a859f1 AK |
4647 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4648 | zlog_debug("evpn mh finish"); | |
4649 | ||
4650 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4651 | es_next) { | |
d57e0c05 | 4652 | bgp_evpn_es_local_info_clear(es, true); |
c44ab6f1 | 4653 | } |
8fc2ffb3 AK |
4654 | if (bgp_mh_info->t_cons_check) |
4655 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4656 | list_delete(&bgp_mh_info->local_es_list); |
4657 | list_delete(&bgp_mh_info->pend_es_list); | |
4658 | ||
4659 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4660 | } | |
acd1d9bc AD |
4661 | |
4662 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4663 | void bgp_evpn_switch_ead_evi_rx(void) | |
4664 | { | |
4665 | struct bgp *bgp; | |
4666 | struct bgp_evpn_es *es; | |
4667 | struct bgp_evpn_es_evi *es_evi; | |
4668 | struct listnode *evi_node = NULL; | |
4669 | struct listnode *evi_next = NULL; | |
4670 | struct bgp_evpn_es_evi_vtep *vtep; | |
4671 | struct listnode *vtep_node = NULL; | |
4672 | struct listnode *vtep_next = NULL; | |
4673 | ||
4674 | bgp = bgp_get_evpn(); | |
4675 | if (!bgp) | |
4676 | return; | |
4677 | ||
4678 | /* | |
4679 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4680 | * is active. | |
4681 | */ | |
4682 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4683 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4684 | continue; | |
4685 | ||
4686 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4687 | es_evi)) { | |
4688 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4689 | continue; | |
4690 | ||
4691 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4692 | vtep_node, vtep_next, vtep)) | |
4693 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4694 | } | |
4695 | } | |
4696 | } |