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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" |
23aa35ad | 53 | #include "bgpd/bgp_trace.h" |
c44ab6f1 AK |
54 | |
55 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
56 | struct bgp_evpn_es *es); | |
57 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
58 | struct bgp_evpn_es *es); | |
59 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
60 | struct bgp_evpn_es *es, |
61 | struct in_addr vtep_ip, | |
62 | bool esr, uint8_t df_alg, | |
63 | uint16_t df_pref); | |
c44ab6f1 AK |
64 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, |
65 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr); | |
66 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es); | |
67 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es); | |
333ad64b AK |
68 | static struct bgp_evpn_es_evi * |
69 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi); | |
c589d847 AK |
70 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es); |
71 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es); | |
26c03e43 AK |
72 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi); |
73 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller); | |
60605cbc | 74 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info); |
74efb822 AK |
75 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, |
76 | bool is_local); | |
c44ab6f1 AK |
77 | |
78 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
cc9f21da | 79 | static void bgp_evpn_run_consistency_checks(struct thread *t); |
090efa2f AK |
80 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info); |
81 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info); | |
c44ab6f1 AK |
82 | |
83 | /****************************************************************************** | |
84 | * per-ES (Ethernet Segment) routing table | |
85 | * | |
86 | * Following routes are added to the ES's routing table - | |
87 | * 1. Local and remote ESR (Type-4) | |
88 | * 2. Local EAD-per-ES (Type-1). | |
89 | * | |
90 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
91 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
92 | * being added to same ES). | |
93 | * | |
94 | * Note the following routes go into the VNI routing table (instead of the | |
95 | * ES routing table) - | |
96 | * 1. Remote EAD-per-ES | |
97 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 98 | */ |
185fb14a | 99 | |
c44ab6f1 AK |
100 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
101 | * installed in the ES's routing table. | |
185fb14a | 102 | */ |
c44ab6f1 | 103 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
104 | struct bgp_evpn_es *es, |
105 | struct bgp_dest *dest) | |
185fb14a AK |
106 | { |
107 | int ret = 0; | |
108 | afi_t afi = AFI_L2VPN; | |
109 | safi_t safi = SAFI_EVPN; | |
110 | struct bgp_path_info *old_select; /* old best */ | |
111 | struct bgp_path_info *new_select; /* new best */ | |
112 | struct bgp_path_info_pair old_and_new; | |
113 | ||
114 | /* Compute the best path. */ | |
09319b4e DS |
115 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
116 | afi, safi); | |
185fb14a AK |
117 | old_select = old_and_new.old; |
118 | new_select = old_and_new.new; | |
119 | ||
120 | /* | |
121 | * If the best path hasn't changed - see if something needs to be | |
122 | * updated | |
123 | */ | |
124 | if (old_select && old_select == new_select | |
09319b4e DS |
125 | && old_select->type == ZEBRA_ROUTE_BGP |
126 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
127 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
128 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
129 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 130 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
131 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
132 | true /*esr*/, | |
133 | old_select->attr->df_alg, | |
134 | old_select->attr->df_pref); | |
185fb14a AK |
135 | } |
136 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 137 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
138 | return ret; |
139 | } | |
140 | ||
141 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 142 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 143 | |
c44ab6f1 | 144 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
145 | * into the zebra RIB. |
146 | */ | |
147 | if (old_select || new_select) | |
09319b4e | 148 | bgp_bump_version(dest); |
185fb14a AK |
149 | |
150 | if (old_select) | |
09319b4e | 151 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 152 | if (new_select) { |
09319b4e DS |
153 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
154 | bgp_path_info_unset_flag(dest, new_select, | |
155 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
156 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
157 | } | |
158 | ||
159 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 160 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
161 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
162 | true /*esr */, new_select->attr->df_alg, | |
163 | new_select->attr->df_pref); | |
185fb14a AK |
164 | } else { |
165 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
166 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
167 | bgp_evpn_es_vtep_del( | |
168 | bgp, es, old_select->attr->nexthop, | |
169 | true /*esr*/); | |
185fb14a AK |
170 | } |
171 | ||
172 | /* Clear any route change flags. */ | |
09319b4e | 173 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
174 | |
175 | /* Reap old select bgp_path_info, if it has been removed */ | |
176 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 177 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
178 | |
179 | return ret; | |
180 | } | |
181 | ||
c44ab6f1 AK |
182 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
183 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
184 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
185 | struct bgp_path_info *parent_pi) | |
186 | { | |
187 | int ret = 0; | |
09319b4e | 188 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
189 | struct bgp_path_info *pi = NULL; |
190 | struct attr *attr_new = NULL; | |
191 | ||
192 | /* Create (or fetch) route within the VNI. | |
193 | * NOTE: There is no RD here. | |
194 | */ | |
09319b4e | 195 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
196 | |
197 | /* Check if route entry is already present. */ | |
09319b4e | 198 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
199 | if (pi->extra |
200 | && (struct bgp_path_info *)pi->extra->parent == | |
201 | parent_pi) | |
202 | break; | |
203 | ||
204 | if (!pi) { | |
205 | /* Add (or update) attribute to hash. */ | |
206 | attr_new = bgp_attr_intern(parent_pi->attr); | |
207 | ||
208 | /* Create new route with its attribute. */ | |
209 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 210 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
211 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
212 | bgp_path_info_extra_get(pi); | |
213 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
214 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
215 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
216 | } else { |
217 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
218 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 219 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
220 | return 0; |
221 | } | |
222 | /* The attribute has changed. */ | |
223 | /* Add (or update) attribute to hash. */ | |
224 | attr_new = bgp_attr_intern(parent_pi->attr); | |
225 | ||
226 | /* Restore route, if needed. */ | |
227 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 228 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
229 | |
230 | /* Mark if nexthop has changed. */ | |
231 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
232 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
233 | ||
234 | /* Unintern existing, set to new. */ | |
235 | bgp_attr_unintern(&pi->attr); | |
236 | pi->attr = attr_new; | |
237 | pi->uptime = bgp_clock(); | |
238 | } | |
239 | ||
240 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 241 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 242 | |
09319b4e | 243 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
244 | |
245 | return ret; | |
246 | } | |
247 | ||
248 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
249 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
250 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
251 | { | |
252 | int ret; | |
09319b4e | 253 | struct bgp_dest *dest; |
c44ab6f1 AK |
254 | struct bgp_path_info *pi; |
255 | ||
256 | if (!es->route_table) | |
257 | return 0; | |
258 | ||
259 | /* Locate route within the ESI. | |
260 | * NOTE: There is no RD here. | |
261 | */ | |
09319b4e DS |
262 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
263 | if (!dest) | |
c44ab6f1 AK |
264 | return 0; |
265 | ||
266 | /* Find matching route entry. */ | |
09319b4e | 267 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
268 | if (pi->extra |
269 | && (struct bgp_path_info *)pi->extra->parent == | |
270 | parent_pi) | |
271 | break; | |
272 | ||
e71ad4b6 DA |
273 | if (!pi) { |
274 | bgp_dest_unlock_node(dest); | |
c44ab6f1 | 275 | return 0; |
e71ad4b6 | 276 | } |
c44ab6f1 AK |
277 | |
278 | /* Mark entry for deletion */ | |
09319b4e | 279 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
280 | |
281 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 282 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
283 | |
284 | /* Unlock route node. */ | |
09319b4e | 285 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
286 | |
287 | return ret; | |
288 | } | |
289 | ||
290 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
291 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
292 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
293 | struct bgp_path_info *pi, int install) | |
294 | { | |
295 | int ret = 0; | |
296 | ||
297 | if (install) | |
298 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
299 | else | |
300 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
301 | ||
302 | if (ret) { | |
303 | flog_err( | |
304 | EC_BGP_EVPN_FAIL, | |
305 | "%u: Failed to %s EVPN %s route in ESI %s", | |
306 | bgp->vrf_id, | |
307 | install ? "install" : "uninstall", | |
308 | "ES", es->esi_str); | |
309 | return ret; | |
310 | } | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
315 | * Also remove all remote routes from the per ES table. Invoked when ES | |
316 | * is deleted. | |
185fb14a | 317 | */ |
c44ab6f1 AK |
318 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
319 | { | |
09319b4e | 320 | struct bgp_dest *dest; |
c44ab6f1 AK |
321 | struct bgp_path_info *pi, *nextpi; |
322 | ||
323 | /* de-activate the ES */ | |
324 | bgp_evpn_local_es_down(bgp, es); | |
325 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
326 | ||
327 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
328 | for (dest = bgp_table_top(es->route_table); dest; |
329 | dest = bgp_route_next(dest)) { | |
330 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
331 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
332 | bgp_path_info_delete(dest, pi); | |
333 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
334 | } |
335 | } | |
336 | } | |
337 | ||
338 | /***************************************************************************** | |
339 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
340 | * segment updates. | |
341 | */ | |
342 | ||
343 | /* create or update local EVPN type1/type4 route entry. | |
344 | * | |
345 | * This could be in - | |
346 | * the ES table if ESR/EAD-ES (or) | |
347 | * the VNI table if EAD-EVI (or) | |
348 | * the global table if ESR/EAD-ES/EAD-EVI | |
349 | * | |
350 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
351 | * ESR). | |
352 | */ | |
d60f63f0 AD |
353 | int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
354 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
355 | struct bgp_dest *dest, struct attr *attr, int add, | |
356 | struct bgp_path_info **ri, int *route_changed) | |
185fb14a | 357 | { |
185fb14a AK |
358 | struct bgp_path_info *tmp_pi = NULL; |
359 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
360 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
361 | struct attr *attr_new = NULL; | |
c44ab6f1 | 362 | struct prefix_evpn *evp; |
185fb14a AK |
363 | |
364 | *ri = NULL; | |
752eed47 | 365 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 366 | *route_changed = 1; |
185fb14a AK |
367 | |
368 | /* locate the local and remote entries if any */ | |
09319b4e | 369 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
370 | tmp_pi = tmp_pi->next) { |
371 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
372 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
373 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
374 | local_pi = tmp_pi; |
375 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
376 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
377 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
378 | remote_pi = tmp_pi; |
379 | } | |
380 | ||
c44ab6f1 AK |
381 | /* we don't expect to see a remote_ri at this point as |
382 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
383 | * in the VNI-rt-table. | |
185fb14a AK |
384 | */ |
385 | if (remote_pi) { | |
386 | flog_err( | |
23d0a753 DA |
387 | EC_BGP_ES_INVALID, |
388 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
d60f63f0 AD |
389 | bgp->vrf_id, es ? es->esi_str : "Null", |
390 | &es->originator_ip); | |
185fb14a AK |
391 | return -1; |
392 | } | |
393 | ||
394 | if (!local_pi && !add) | |
395 | return 0; | |
396 | ||
397 | /* create or update the entry */ | |
398 | if (!local_pi) { | |
399 | ||
400 | /* Add or update attribute to hash */ | |
401 | attr_new = bgp_attr_intern(attr); | |
402 | ||
403 | /* Create new route with its attribute. */ | |
404 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 405 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
406 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
407 | ||
c44ab6f1 AK |
408 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
409 | bgp_path_info_extra_get(tmp_pi); | |
410 | tmp_pi->extra->num_labels = 1; | |
411 | if (vpn) | |
412 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
413 | else | |
414 | tmp_pi->extra->label[0] = 0; | |
415 | } | |
416 | ||
185fb14a | 417 | /* add the newly created path to the route-node */ |
09319b4e | 418 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
419 | } else { |
420 | tmp_pi = local_pi; | |
421 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 422 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
423 | *route_changed = 0; |
424 | else { | |
425 | /* The attribute has changed. | |
426 | * Add (or update) attribute to hash. | |
427 | */ | |
428 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
429 | bgp_path_info_set_flag(dest, tmp_pi, |
430 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
431 | |
432 | /* Restore route, if needed. */ | |
433 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 434 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
435 | |
436 | /* Unintern existing, set to new. */ | |
437 | bgp_attr_unintern(&tmp_pi->attr); | |
438 | tmp_pi->attr = attr_new; | |
439 | tmp_pi->uptime = bgp_clock(); | |
440 | } | |
441 | } | |
442 | ||
c44ab6f1 AK |
443 | if (*route_changed) { |
444 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
445 | zlog_debug( |
446 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
d60f63f0 | 447 | es ? es->esi_str : "Null", vpn ? vpn->vni : 0, |
23d0a753 DA |
448 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
449 | ? "esr" | |
450 | : (vpn ? "ead-evi" : "ead-es"), | |
451 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
452 | } |
453 | ||
185fb14a AK |
454 | /* Return back the route entry. */ |
455 | *ri = tmp_pi; | |
456 | return 0; | |
457 | } | |
458 | ||
c44ab6f1 AK |
459 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
460 | * | |
461 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
462 | * ESR). | |
463 | */ | |
464 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
465 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 466 | { |
185fb14a AK |
467 | afi_t afi = AFI_L2VPN; |
468 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 469 | struct bgp_path_info *pi; |
09319b4e DS |
470 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
471 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
472 | struct bgp_table *rt_table; |
473 | struct prefix_rd *prd; | |
185fb14a | 474 | |
c44ab6f1 AK |
475 | if (vpn) { |
476 | rt_table = vpn->route_table; | |
477 | prd = &vpn->prd; | |
478 | } else { | |
479 | rt_table = es->route_table; | |
480 | prd = &es->prd; | |
481 | } | |
185fb14a | 482 | |
c44ab6f1 AK |
483 | /* First, locate the route node within the ESI or VNI. |
484 | * If it doesn't exist, ther is nothing to do. | |
485 | * Note: there is no RD here. | |
486 | */ | |
09319b4e DS |
487 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
488 | if (!dest) | |
c44ab6f1 | 489 | return 0; |
185fb14a | 490 | |
c44ab6f1 | 491 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
492 | zlog_debug( |
493 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
494 | es->esi_str, vpn ? vpn->vni : 0, | |
495 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
496 | ? "esr" | |
497 | : (vpn ? "ead-evi" : "ead-es"), | |
498 | &es->originator_ip); | |
185fb14a | 499 | |
c44ab6f1 AK |
500 | /* Next, locate route node in the global EVPN routing table. |
501 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
502 | */ | |
09319b4e DS |
503 | global_dest = |
504 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
505 | (const struct prefix_evpn *)p, prd); | |
506 | if (global_dest) { | |
185fb14a | 507 | |
c44ab6f1 | 508 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 509 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
510 | |
511 | /* Schedule for processing - withdraws to peers happen from | |
512 | * this table. | |
513 | */ | |
514 | if (pi) | |
09319b4e DS |
515 | bgp_process(bgp, global_dest, afi, safi); |
516 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
517 | } |
518 | ||
519 | /* | |
c44ab6f1 | 520 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
521 | * This can just be removed. |
522 | */ | |
09319b4e | 523 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 524 | if (pi) |
09319b4e DS |
525 | bgp_path_info_reap(dest, pi); |
526 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
527 | return 0; |
528 | } | |
529 | ||
d60f63f0 AD |
530 | /* |
531 | * This function is called when the VNI RD changes. | |
532 | * Delete all EAD/EVI local routes for this VNI from the global routing table. | |
533 | * These routes are scheduled for withdraw from peers. | |
534 | */ | |
535 | int delete_global_ead_evi_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
536 | { | |
537 | afi_t afi; | |
538 | safi_t safi; | |
539 | struct bgp_dest *rdrn, *rn; | |
540 | struct bgp_table *table; | |
541 | struct bgp_path_info *pi; | |
542 | ||
543 | afi = AFI_L2VPN; | |
544 | safi = SAFI_EVPN; | |
545 | ||
546 | /* Find the RD node for the VNI in the global table */ | |
547 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); | |
548 | if (rdrn && bgp_dest_has_bgp_path_info_data(rdrn)) { | |
549 | table = bgp_dest_get_bgp_table_info(rdrn); | |
550 | ||
551 | /* | |
552 | * Iterate over all the routes in this table and delete EAD/EVI | |
553 | * routes | |
554 | */ | |
555 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
556 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
557 | ||
558 | if (evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
559 | continue; | |
560 | ||
561 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); | |
562 | if (pi) | |
563 | bgp_process(bgp, rn, afi, safi); | |
564 | } | |
565 | } | |
566 | ||
567 | /* Unlock RD node. */ | |
568 | if (rdrn) | |
569 | bgp_dest_unlock_node(rdrn); | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
c44ab6f1 AK |
574 | /***************************************************************************** |
575 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
576 | * ESRs are used for DF election. Currently service-carving described in |
577 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
578 | * used by default. | |
579 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 580 | */ |
c44ab6f1 AK |
581 | /* Build extended community for EVPN ES (type-4) route */ |
582 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
583 | struct attr *attr) | |
185fb14a | 584 | { |
c44ab6f1 AK |
585 | struct ecommunity ecom_encap; |
586 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 587 | struct ecommunity ecom_df; |
c44ab6f1 AK |
588 | struct ecommunity_val eval; |
589 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 590 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
591 | bgp_encap_types tnl_type; |
592 | struct ethaddr mac; | |
185fb14a | 593 | |
c44ab6f1 AK |
594 | /* Encap */ |
595 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
596 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
597 | encode_encap_extcomm(tnl_type, &eval); | |
598 | ecom_encap.size = 1; | |
34540b0d | 599 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 600 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 601 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
185fb14a | 602 | |
c44ab6f1 AK |
603 | /* ES import RT */ |
604 | memset(&mac, 0, sizeof(struct ethaddr)); | |
605 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
606 | es_get_system_mac(&es->esi, &mac); | |
607 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
608 | ecom_es_rt.size = 1; | |
34540b0d | 609 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 610 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
b53e67a3 DA |
611 | bgp_attr_set_ecommunity( |
612 | attr, | |
613 | ecommunity_merge(bgp_attr_get_ecommunity(attr), &ecom_es_rt)); | |
185fb14a | 614 | |
74e2bd89 AK |
615 | /* DF election extended community */ |
616 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
617 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
618 | ecom_df.size = 1; | |
619 | ecom_df.val = (uint8_t *)eval_df.val; | |
b53e67a3 DA |
620 | bgp_attr_set_ecommunity( |
621 | attr, | |
622 | ecommunity_merge(bgp_attr_get_ecommunity(attr), &ecom_df)); | |
74e2bd89 | 623 | |
c44ab6f1 | 624 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
625 | } |
626 | ||
c44ab6f1 AK |
627 | /* Create or update local type-4 route */ |
628 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
629 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
630 | { |
631 | int ret = 0; | |
c44ab6f1 AK |
632 | int route_changed = 0; |
633 | afi_t afi = AFI_L2VPN; | |
634 | safi_t safi = SAFI_EVPN; | |
635 | struct attr attr; | |
636 | struct attr *attr_new = NULL; | |
09319b4e | 637 | struct bgp_dest *dest = NULL; |
185fb14a | 638 | struct bgp_path_info *pi = NULL; |
185fb14a | 639 | |
c44ab6f1 AK |
640 | memset(&attr, 0, sizeof(struct attr)); |
641 | ||
642 | /* Build path-attribute for this route. */ | |
643 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
644 | attr.nexthop = es->originator_ip; | |
645 | attr.mp_nexthop_global_in = es->originator_ip; | |
646 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
647 | ||
648 | /* Set up extended community. */ | |
649 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
650 | ||
651 | /* First, create (or fetch) route node within the ESI. */ | |
652 | /* NOTE: There is no RD here. */ | |
09319b4e | 653 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 654 | |
c44ab6f1 | 655 | /* Create or update route entry. */ |
09319b4e DS |
656 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
657 | &pi, &route_changed); | |
ec779825 | 658 | if (ret != 0) |
23d0a753 DA |
659 | flog_err( |
660 | EC_BGP_ES_INVALID, | |
661 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
662 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 663 | |
c44ab6f1 AK |
664 | assert(pi); |
665 | attr_new = pi->attr; | |
185fb14a | 666 | |
c44ab6f1 AK |
667 | /* Perform route selection; |
668 | * this is just to set the flags correctly | |
669 | * as local route in the ES always wins. | |
670 | */ | |
09319b4e DS |
671 | bgp_evpn_es_route_select_install(bgp, es, dest); |
672 | bgp_dest_unlock_node(dest); | |
185fb14a | 673 | |
c44ab6f1 AK |
674 | /* If this is a new route or some attribute has changed, export the |
675 | * route to the global table. The route will be advertised to peers | |
676 | * from there. Note that this table is a 2-level tree (RD-level + | |
677 | * Prefix-level) similar to L3VPN routes. | |
678 | */ | |
679 | if (route_changed) { | |
680 | struct bgp_path_info *global_pi; | |
185fb14a | 681 | |
09319b4e DS |
682 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
683 | p, &es->prd); | |
684 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
685 | attr_new, 1, &global_pi, | |
686 | &route_changed); | |
185fb14a | 687 | |
c44ab6f1 | 688 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
689 | bgp_process(bgp, dest, afi, safi); |
690 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
691 | } |
692 | ||
c44ab6f1 AK |
693 | /* Unintern temporary. */ |
694 | aspath_unintern(&attr.aspath); | |
695 | return 0; | |
185fb14a AK |
696 | } |
697 | ||
c44ab6f1 AK |
698 | /* Delete local type-4 route */ |
699 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
700 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 701 | { |
c44ab6f1 AK |
702 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
703 | } | |
185fb14a | 704 | |
c44ab6f1 AK |
705 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
706 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
707 | struct attr *attr, uint8_t *pfx, int psize, | |
708 | uint32_t addpath_id) | |
709 | { | |
710 | int ret; | |
711 | esi_t esi; | |
712 | uint8_t ipaddr_len; | |
713 | struct in_addr vtep_ip; | |
714 | struct prefix_rd prd; | |
715 | struct prefix_evpn p; | |
185fb14a | 716 | |
c44ab6f1 AK |
717 | /* Type-4 route should be either 23 or 35 bytes |
718 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 719 | */ |
c44ab6f1 AK |
720 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
721 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
722 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
723 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
724 | peer->bgp->vrf_id, peer->host, psize); | |
725 | return -1; | |
726 | } | |
185fb14a | 727 | |
c44ab6f1 AK |
728 | /* Make prefix_rd */ |
729 | prd.family = AF_UNSPEC; | |
730 | prd.prefixlen = 64; | |
731 | memcpy(&prd.val, pfx, RD_BYTES); | |
732 | pfx += RD_BYTES; | |
185fb14a | 733 | |
c44ab6f1 AK |
734 | /* get the ESI */ |
735 | memcpy(&esi, pfx, ESI_BYTES); | |
736 | pfx += ESI_BYTES; | |
185fb14a | 737 | |
185fb14a | 738 | |
c44ab6f1 AK |
739 | /* Get the IP. */ |
740 | ipaddr_len = *pfx++; | |
741 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
742 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
743 | } else { | |
744 | flog_err( | |
745 | EC_BGP_EVPN_ROUTE_INVALID, | |
746 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
747 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
748 | return -1; | |
749 | } | |
185fb14a | 750 | |
c44ab6f1 AK |
751 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
752 | /* Process the route. */ | |
753 | if (attr) { | |
754 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
755 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
756 | &prd, NULL, 0, 0, NULL); | |
757 | } else { | |
758 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
759 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
760 | &prd, NULL, 0, NULL); | |
761 | } | |
185fb14a AK |
762 | return ret; |
763 | } | |
764 | ||
c44ab6f1 AK |
765 | /* Check if a prefix belongs to the local ES */ |
766 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
767 | struct bgp_evpn_es *es) | |
185fb14a | 768 | { |
c44ab6f1 AK |
769 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
770 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
771 | } |
772 | ||
c44ab6f1 AK |
773 | /* Import remote ESRs on local ethernet segment add */ |
774 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
775 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
776 | { |
777 | int ret; | |
778 | afi_t afi; | |
779 | safi_t safi; | |
09319b4e | 780 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
781 | struct bgp_table *table; |
782 | struct bgp_path_info *pi; | |
783 | ||
784 | afi = AFI_L2VPN; | |
785 | safi = SAFI_EVPN; | |
786 | ||
c44ab6f1 AK |
787 | /* Walk entire global routing table and evaluate routes which could be |
788 | * imported into this Ethernet Segment. | |
185fb14a | 789 | */ |
09319b4e DS |
790 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
791 | rd_dest = bgp_route_next(rd_dest)) { | |
792 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
793 | if (!table) |
794 | continue; | |
795 | ||
09319b4e DS |
796 | for (dest = bgp_table_top(table); dest; |
797 | dest = bgp_route_next(dest)) { | |
798 | struct prefix_evpn *evp = | |
752eed47 | 799 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 800 | |
09319b4e DS |
801 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
802 | pi = pi->next) { | |
185fb14a AK |
803 | /* |
804 | * Consider "valid" remote routes applicable for | |
805 | * this ES. | |
806 | */ | |
807 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
808 | && pi->type == ZEBRA_ROUTE_BGP |
809 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
810 | continue; |
811 | ||
c44ab6f1 | 812 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
813 | continue; |
814 | ||
815 | if (install) | |
c44ab6f1 AK |
816 | ret = bgp_evpn_es_route_install( |
817 | bgp, es, evp, pi); | |
185fb14a | 818 | else |
c44ab6f1 AK |
819 | ret = bgp_evpn_es_route_uninstall( |
820 | bgp, es, evp, pi); | |
185fb14a AK |
821 | |
822 | if (ret) { | |
823 | flog_err( | |
2dbe669b DA |
824 | EC_BGP_EVPN_FAIL, |
825 | "Failed to %s EVPN %pFX route in ESI %s", | |
826 | install ? "install" | |
185fb14a | 827 | : "uninstall", |
2dbe669b | 828 | evp, es->esi_str); |
dc52bece DS |
829 | |
830 | bgp_dest_unlock_node(rd_dest); | |
831 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
832 | return ret; |
833 | } | |
834 | } | |
835 | } | |
836 | } | |
837 | return 0; | |
838 | } | |
839 | ||
c44ab6f1 AK |
840 | /***************************************************************************** |
841 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
842 | * There are two types of EAD routes - | |
843 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
844 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 845 | */ |
185fb14a | 846 | |
c44ab6f1 AK |
847 | /* Extended communities associated with EAD-per-ES */ |
848 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
849 | struct attr *attr) | |
185fb14a | 850 | { |
c44ab6f1 AK |
851 | struct ecommunity ecom_encap; |
852 | struct ecommunity ecom_esi_label; | |
853 | struct ecommunity_val eval; | |
854 | struct ecommunity_val eval_esi_label; | |
855 | bgp_encap_types tnl_type; | |
856 | struct listnode *evi_node, *rt_node; | |
857 | struct ecommunity *ecom; | |
858 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 859 | |
c44ab6f1 AK |
860 | /* Encap */ |
861 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
862 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
863 | encode_encap_extcomm(tnl_type, &eval); | |
864 | ecom_encap.size = 1; | |
34540b0d | 865 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 866 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 867 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
185fb14a | 868 | |
c44ab6f1 AK |
869 | /* ESI label */ |
870 | encode_esi_label_extcomm(&eval_esi_label, | |
871 | false /*single_active*/); | |
872 | ecom_esi_label.size = 1; | |
34540b0d | 873 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 874 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
b53e67a3 DA |
875 | bgp_attr_set_ecommunity(attr, |
876 | ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
877 | &ecom_esi_label)); | |
c44ab6f1 AK |
878 | |
879 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
880 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
881 | * with it. | |
882 | */ | |
883 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
884 | evi_node, es_evi)) { | |
885 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
886 | continue; | |
887 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
888 | rt_node, ecom)) | |
b53e67a3 DA |
889 | bgp_attr_set_ecommunity( |
890 | attr, | |
891 | ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
892 | ecom)); | |
c44ab6f1 AK |
893 | } |
894 | ||
895 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
896 | } | |
897 | ||
898 | /* Extended communities associated with EAD-per-EVI */ | |
899 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
900 | struct bgpevpn *vpn, struct attr *attr) | |
901 | { | |
902 | struct ecommunity ecom_encap; | |
903 | struct ecommunity_val eval; | |
904 | bgp_encap_types tnl_type; | |
905 | struct listnode *rt_node; | |
906 | struct ecommunity *ecom; | |
907 | ||
908 | /* Encap */ | |
909 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
910 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
911 | encode_encap_extcomm(tnl_type, &eval); | |
912 | ecom_encap.size = 1; | |
7659ad68 | 913 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 914 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 915 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
c44ab6f1 AK |
916 | |
917 | /* Add export RTs for the L2-VNI */ | |
918 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
b53e67a3 DA |
919 | bgp_attr_set_ecommunity( |
920 | attr, | |
921 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
c44ab6f1 AK |
922 | |
923 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
924 | } | |
925 | ||
926 | /* Update EVPN EAD (type-1) route - | |
927 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
928 | */ | |
929 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
930 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
931 | struct prefix_evpn *p) | |
932 | { | |
933 | int ret = 0; | |
934 | afi_t afi = AFI_L2VPN; | |
935 | safi_t safi = SAFI_EVPN; | |
936 | struct attr attr; | |
937 | struct attr *attr_new = NULL; | |
09319b4e | 938 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
939 | struct bgp_path_info *pi = NULL; |
940 | int route_changed = 0; | |
941 | struct prefix_rd *global_rd; | |
942 | ||
943 | memset(&attr, 0, sizeof(struct attr)); | |
944 | ||
945 | /* Build path-attribute for this route. */ | |
946 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
947 | attr.nexthop = es->originator_ip; | |
948 | attr.mp_nexthop_global_in = es->originator_ip; | |
949 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
950 | ||
951 | if (vpn) { | |
952 | /* EAD-EVI route update */ | |
953 | /* MPLS label */ | |
954 | vni2label(vpn->vni, &(attr.label)); | |
955 | ||
956 | /* Set up extended community */ | |
957 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
958 | ||
959 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 960 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
961 | |
962 | /* Create or update route entry. */ | |
09319b4e DS |
963 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
964 | &attr, 1, &pi, &route_changed); | |
ec779825 | 965 | if (ret != 0) |
23d0a753 DA |
966 | flog_err( |
967 | EC_BGP_ES_INVALID, | |
968 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
969 | bgp->vrf_id, es->esi_str, vpn->vni, | |
970 | &es->originator_ip); | |
c44ab6f1 AK |
971 | global_rd = &vpn->prd; |
972 | } else { | |
973 | /* EAD-ES route update */ | |
974 | /* MPLS label is 0 for EAD-ES route */ | |
975 | ||
976 | /* Set up extended community */ | |
977 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
978 | ||
979 | /* First, create (or fetch) route node within the ES. */ | |
980 | /* NOTE: There is no RD here. */ | |
981 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 982 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
983 | |
984 | /* Create or update route entry. */ | |
09319b4e DS |
985 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
986 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 987 | if (ret != 0) { |
23d0a753 DA |
988 | flog_err( |
989 | EC_BGP_ES_INVALID, | |
990 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
991 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
992 | } |
993 | global_rd = &es->prd; | |
994 | } | |
995 | ||
996 | ||
997 | assert(pi); | |
998 | attr_new = pi->attr; | |
999 | ||
1000 | /* Perform route selection; | |
1001 | * this is just to set the flags correctly as local route in | |
1002 | * the ES always wins. | |
1003 | */ | |
09319b4e DS |
1004 | evpn_route_select_install(bgp, vpn, dest); |
1005 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
1006 | |
1007 | /* If this is a new route or some attribute has changed, export the | |
1008 | * route to the global table. The route will be advertised to peers | |
1009 | * from there. Note that this table is a 2-level tree (RD-level + | |
1010 | * Prefix-level) similar to L3VPN routes. | |
1011 | */ | |
1012 | if (route_changed) { | |
1013 | struct bgp_path_info *global_pi; | |
1014 | ||
09319b4e DS |
1015 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1016 | p, global_rd); | |
1017 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
1018 | attr_new, 1, &global_pi, | |
1019 | &route_changed); | |
c44ab6f1 AK |
1020 | |
1021 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
1022 | bgp_process(bgp, dest, afi, safi); |
1023 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
1024 | } |
1025 | ||
1026 | /* Unintern temporary. */ | |
1027 | aspath_unintern(&attr.aspath); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
9c49ac74 AD |
1031 | /* |
1032 | * This function is called when the export RT for a VNI changes. | |
1033 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
1034 | * table and advertise these routes to peers. | |
1035 | */ | |
1036 | ||
1037 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
1038 | { | |
1039 | struct prefix_evpn p; | |
1040 | struct bgp_evpn_es *es; | |
1041 | struct bgp_evpn_es_evi *es_evi; | |
1042 | struct bgp_evpn_es_evi *es_evi_next; | |
1043 | ||
1044 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
1045 | &vpn->es_evi_rb_tree, es_evi_next) { | |
1046 | es = es_evi->es; | |
1047 | ||
1048 | /* Update EAD-ES */ | |
1049 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1050 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1051 | &es->esi, es->originator_ip); | |
1052 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
1053 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1054 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
1055 | bgp->vrf_id, es->esi_str, | |
1056 | es_evi->vpn->vni); | |
1057 | } | |
1058 | ||
1059 | /* Update EAD-EVI */ | |
1060 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1061 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1062 | &es->esi, es->originator_ip); | |
1063 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1064 | &p)) | |
1065 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1066 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1067 | bgp->vrf_id, es->esi_str, | |
1068 | es_evi->vpn->vni); | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | ||
c44ab6f1 AK |
1073 | /* Delete local Type-1 route */ |
1074 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1075 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1076 | { | |
1077 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1078 | } | |
1079 | ||
1080 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1081 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1082 | struct prefix_evpn *p) | |
1083 | { | |
1084 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1085 | } | |
1086 | ||
1087 | /* Generate EAD-EVI for all VNIs */ | |
1088 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1089 | struct bgp_evpn_es *es) | |
1090 | { | |
1091 | struct listnode *evi_node; | |
1092 | struct prefix_evpn p; | |
1093 | struct bgp_evpn_es_evi *es_evi; | |
1094 | ||
fe8293c3 AK |
1095 | /* EAD-per-EVI routes have been suppressed */ |
1096 | if (!bgp_mh_info->ead_evi_tx) | |
1097 | return; | |
1098 | ||
c44ab6f1 AK |
1099 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1100 | /* EAD-EVI route add for this ES is already done */ | |
1101 | return; | |
1102 | ||
1103 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1104 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1105 | &es->esi, es->originator_ip); | |
1106 | ||
1107 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1108 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1109 | continue; | |
1110 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1111 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1112 | "%u: Type4 route creation failure for ESI %s", | |
1113 | bgp->vrf_id, es->esi_str); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* | |
1118 | * Withdraw EAD-EVI for all VNIs | |
1119 | */ | |
1120 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1121 | struct bgp_evpn_es *es) | |
1122 | { | |
1123 | struct listnode *evi_node; | |
1124 | struct prefix_evpn p; | |
1125 | struct bgp_evpn_es_evi *es_evi; | |
1126 | ||
1127 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1128 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1129 | /* EAD-EVI route has not been advertised for this ES */ | |
1130 | return; | |
1131 | ||
1132 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1133 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1134 | &es->esi, es->originator_ip); | |
1135 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1136 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1137 | continue; | |
1138 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1139 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1140 | "%u: Type4 route creation failure for ESI %s", | |
1141 | bgp->vrf_id, es->esi_str); | |
1142 | } | |
1143 | } | |
185fb14a AK |
1144 | |
1145 | /* | |
c44ab6f1 | 1146 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1147 | */ |
c44ab6f1 AK |
1148 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1149 | struct attr *attr, uint8_t *pfx, int psize, | |
1150 | uint32_t addpath_id) | |
185fb14a AK |
1151 | { |
1152 | int ret; | |
c44ab6f1 | 1153 | struct prefix_rd prd; |
185fb14a | 1154 | esi_t esi; |
c44ab6f1 AK |
1155 | uint32_t eth_tag; |
1156 | mpls_label_t label; | |
185fb14a | 1157 | struct in_addr vtep_ip; |
185fb14a AK |
1158 | struct prefix_evpn p; |
1159 | ||
c44ab6f1 | 1160 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1161 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1162 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1163 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1164 | return -1; |
1165 | } | |
1166 | ||
1167 | /* Make prefix_rd */ | |
1168 | prd.family = AF_UNSPEC; | |
1169 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1170 | memcpy(&prd.val, pfx, RD_BYTES); |
1171 | pfx += RD_BYTES; | |
185fb14a AK |
1172 | |
1173 | /* get the ESI */ | |
1174 | memcpy(&esi, pfx, ESI_BYTES); | |
1175 | pfx += ESI_BYTES; | |
1176 | ||
c44ab6f1 AK |
1177 | /* Copy Ethernet Tag */ |
1178 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1179 | eth_tag = ntohl(eth_tag); | |
1180 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1181 | |
c44ab6f1 | 1182 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1183 | |
c44ab6f1 AK |
1184 | /* EAD route prefix doesn't include the nexthop in the global |
1185 | * table | |
1186 | */ | |
3a6290bd | 1187 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1188 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1189 | /* Process the route. */ |
1190 | if (attr) { | |
1191 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1192 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1193 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1194 | } else { |
1195 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1196 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1197 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1198 | } |
1199 | return ret; | |
1200 | } | |
1201 | ||
c44ab6f1 AK |
1202 | /*****************************************************************************/ |
1203 | /* Ethernet Segment Management | |
1204 | * 1. Ethernet Segment is a collection of links attached to the same | |
1205 | * server (MHD) or switch (MHN) | |
1206 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1207 | * 10-byte ES-ID. | |
1208 | * 3. Local ESs are configured in zebra and sent to BGP | |
1209 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1210 | * created on first reference and release on last de-reference | |
1211 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1212 | * to have an ES peer. | |
1213 | */ | |
1214 | ||
1215 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1216 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1217 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1218 | * have been imported into one or more VNIs | |
185fb14a | 1219 | */ |
c44ab6f1 AK |
1220 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1221 | { | |
1222 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1223 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1224 | ||
1225 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1226 | } | |
1227 | ||
1228 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1229 | struct in_addr vtep_ip) | |
1230 | { | |
1231 | struct bgp_evpn_es_vtep *es_vtep; | |
1232 | ||
1233 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1234 | ||
1235 | es_vtep->es = es; | |
1236 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
23aa35ad AK |
1237 | inet_ntop(AF_INET, &es_vtep->vtep_ip, es_vtep->vtep_str, |
1238 | sizeof(es_vtep->vtep_str)); | |
c44ab6f1 AK |
1239 | listnode_init(&es_vtep->es_listnode, es_vtep); |
1240 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1241 | ||
1242 | return es_vtep; | |
1243 | } | |
1244 | ||
1245 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1246 | { | |
1247 | struct bgp_evpn_es *es = es_vtep->es; | |
1248 | ||
1249 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1250 | es_vtep->evi_cnt) | |
1251 | /* as long as there is some reference we can't free it */ | |
1252 | return; | |
1253 | ||
1254 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1255 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1256 | } | |
1257 | ||
1258 | /* check if VTEP is already part of the list */ | |
1259 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1260 | struct in_addr vtep_ip) | |
1261 | { | |
1262 | struct listnode *node = NULL; | |
1263 | struct bgp_evpn_es_vtep *es_vtep; | |
1264 | ||
1265 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1266 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1267 | return es_vtep; | |
1268 | } | |
1269 | return NULL; | |
1270 | } | |
1271 | ||
1272 | /* Send the remote ES to zebra for NHG programming */ | |
1273 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1274 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1275 | { | |
1276 | struct bgp_evpn_es *es = es_vtep->es; | |
1277 | struct stream *s; | |
74e2bd89 | 1278 | uint32_t flags = 0; |
c44ab6f1 AK |
1279 | |
1280 | /* Check socket. */ | |
1281 | if (!zclient || zclient->sock < 0) | |
1282 | return 0; | |
1283 | ||
1284 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1285 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1286 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1287 | zlog_debug("No zebra instance, not installing remote es %s", | |
1288 | es->esi_str); | |
1289 | return 0; | |
1290 | } | |
1291 | ||
74e2bd89 AK |
1292 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1293 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1294 | ||
c44ab6f1 AK |
1295 | s = zclient->obuf; |
1296 | stream_reset(s); | |
1297 | ||
1298 | zclient_create_header(s, | |
1299 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1300 | bgp->vrf_id); | |
1301 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1302 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1303 | if (add) { |
1304 | stream_putl(s, flags); | |
1305 | stream_putc(s, es_vtep->df_alg); | |
1306 | stream_putw(s, es_vtep->df_pref); | |
1307 | } | |
c44ab6f1 AK |
1308 | |
1309 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1310 | ||
1311 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1312 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1313 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 | 1314 | |
23aa35ad AK |
1315 | frrtrace(3, frr_bgp, evpn_mh_vtep_zsend, add, es, es_vtep); |
1316 | ||
c44ab6f1 AK |
1317 | return zclient_send_message(zclient); |
1318 | } | |
1319 | ||
1320 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1321 | struct bgp_evpn_es_vtep *es_vtep, |
1322 | bool param_change) | |
c44ab6f1 AK |
1323 | { |
1324 | bool old_active; | |
1325 | bool new_active; | |
1326 | ||
d4980edf | 1327 | old_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 AK |
1328 | /* currently we need an active EVI reference to use the VTEP as |
1329 | * a nexthop. this may change... | |
1330 | */ | |
1331 | if (es_vtep->evi_cnt) | |
1332 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1333 | else | |
1334 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1335 | ||
d4980edf | 1336 | new_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 | 1337 | |
74e2bd89 | 1338 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1339 | |
74e2bd89 AK |
1340 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1341 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1342 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1343 | new_active ? "active" : "inactive", | |
1344 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1345 | |
74e2bd89 AK |
1346 | /* send remote ES to zebra */ |
1347 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1348 | |
8bcb09a1 AK |
1349 | /* The NHG is updated first for efficient failover handling. |
1350 | * Note the NHG can be de-activated while there are bgp | |
1351 | * routes referencing it. Zebra is capable of handling that | |
1352 | * elegantly by holding the NHG till all routes using it are | |
1353 | * removed. | |
26c03e43 | 1354 | */ |
8bcb09a1 | 1355 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1356 | /* queue up the es for background consistency checks */ |
1357 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1358 | } | |
c44ab6f1 AK |
1359 | } |
1360 | ||
1361 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1362 | struct bgp_evpn_es *es, |
1363 | struct in_addr vtep_ip, | |
1364 | bool esr, uint8_t df_alg, | |
1365 | uint16_t df_pref) | |
c44ab6f1 AK |
1366 | { |
1367 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1368 | bool param_change = false; |
c44ab6f1 AK |
1369 | |
1370 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1371 | ||
1372 | if (!es_vtep) | |
1373 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1374 | ||
1375 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1376 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1377 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1378 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1379 | |
74e2bd89 | 1380 | if (esr) { |
c44ab6f1 | 1381 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1382 | if ((es_vtep->df_pref != df_pref) |
1383 | || (es_vtep->df_alg != df_alg)) { | |
1384 | param_change = true; | |
1385 | es_vtep->df_pref = df_pref; | |
1386 | es_vtep->df_alg = df_alg; | |
1387 | } | |
1388 | } else { | |
c44ab6f1 | 1389 | ++es_vtep->evi_cnt; |
74e2bd89 | 1390 | } |
c44ab6f1 | 1391 | |
74e2bd89 | 1392 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1393 | |
1394 | return es_vtep; | |
1395 | } | |
1396 | ||
1397 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1398 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1399 | { | |
74e2bd89 AK |
1400 | bool param_change = false; |
1401 | ||
c44ab6f1 | 1402 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1403 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1404 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1405 | if (esr) { |
1406 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1407 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1408 | param_change = true; | |
1409 | es_vtep->df_pref = 0; | |
1410 | es_vtep->df_alg = 0; | |
1411 | } | |
c44ab6f1 AK |
1412 | } else { |
1413 | if (es_vtep->evi_cnt) | |
1414 | --es_vtep->evi_cnt; | |
1415 | } | |
1416 | ||
74e2bd89 | 1417 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1418 | bgp_evpn_es_vtep_free(es_vtep); |
1419 | } | |
1420 | ||
1421 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1422 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1423 | { | |
1424 | struct bgp_evpn_es_vtep *es_vtep; | |
1425 | ||
1426 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1427 | if (es_vtep) | |
1428 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1429 | } | |
1430 | ||
26c03e43 | 1431 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1432 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1433 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1434 | * state changes. | |
1435 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1436 | * the detination for efficient updates on - | |
1437 | * a. VTEP add/del - this results in a L3NHG update. | |
1438 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1439 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1440 | ****************************************************************************/ |
60605cbc | 1441 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1442 | { |
1443 | bgp_evpn_path_es_unlink(es_info); | |
1444 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1445 | } | |
1446 | ||
60605cbc AK |
1447 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1448 | { | |
1449 | if (mh_info->es_info) | |
1450 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1451 | if (mh_info->nh_info) |
1452 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1453 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1454 | } | |
1455 | ||
26c03e43 AK |
1456 | static struct bgp_path_es_info * |
1457 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1458 | { | |
1459 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1460 | struct bgp_path_mh_info *mh_info; |
1461 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1462 | |
1463 | e = bgp_path_info_extra_get(pi); | |
1464 | ||
60605cbc AK |
1465 | /* If mh_info doesn't exist allocate it */ |
1466 | mh_info = e->mh_info; | |
1467 | if (!mh_info) | |
1468 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1469 | sizeof(struct bgp_path_mh_info)); | |
1470 | ||
26c03e43 | 1471 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1472 | es_info = mh_info->es_info; |
1473 | if (!es_info) { | |
1474 | mh_info->es_info = es_info = | |
1475 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1476 | sizeof(struct bgp_path_es_info)); | |
1477 | es_info->vni = vni; | |
1478 | es_info->pi = pi; | |
26c03e43 AK |
1479 | } |
1480 | ||
60605cbc | 1481 | return es_info; |
26c03e43 AK |
1482 | } |
1483 | ||
60605cbc | 1484 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1485 | { |
1486 | struct bgp_evpn_es *es = es_info->es; | |
1487 | struct bgp_path_info *pi; | |
26c03e43 AK |
1488 | |
1489 | if (!es) | |
1490 | return; | |
1491 | ||
1492 | pi = es_info->pi; | |
1493 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1494 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1495 | &pi->net->p, es->esi_str); | |
26c03e43 | 1496 | |
58bff4d1 AK |
1497 | if (es_info->vni) |
1498 | list_delete_node(es->macip_evi_path_list, | |
1499 | &es_info->es_listnode); | |
1500 | else | |
1501 | list_delete_node(es->macip_global_path_list, | |
1502 | &es_info->es_listnode); | |
74efb822 | 1503 | |
26c03e43 AK |
1504 | es_info->es = NULL; |
1505 | ||
1506 | /* if there are no other references against the ES it | |
1507 | * needs to be freed | |
1508 | */ | |
1509 | bgp_evpn_es_free(es, __func__); | |
1510 | ||
1511 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1512 | * along with the path. | |
1513 | */ | |
1514 | } | |
1515 | ||
1516 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1517 | { | |
1518 | struct bgp_path_es_info *es_info; | |
1519 | struct bgp_evpn_es *es; | |
58bff4d1 | 1520 | struct bgp *bgp_evpn; |
26c03e43 | 1521 | |
60605cbc AK |
1522 | es_info = (pi->extra && pi->extra->mh_info) |
1523 | ? pi->extra->mh_info->es_info | |
1524 | : NULL; | |
26c03e43 AK |
1525 | /* if the esi is zero just unlink the path from the old es */ |
1526 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1527 | if (es_info) | |
1528 | bgp_evpn_path_es_unlink(es_info); | |
1529 | return; | |
1530 | } | |
1531 | ||
58bff4d1 | 1532 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1533 | if (!bgp_evpn) |
1534 | return; | |
1535 | ||
1536 | /* setup es_info against the path if it doesn't aleady exist */ | |
1537 | if (!es_info) | |
1538 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1539 | ||
1540 | /* find-create ES */ | |
1541 | es = bgp_evpn_es_find(esi); | |
1542 | if (!es) | |
f61fbf21 | 1543 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1544 | |
1545 | /* dup check */ | |
1546 | if (es_info->es == es) | |
1547 | return; | |
1548 | ||
1549 | /* unlink old ES if any */ | |
1550 | bgp_evpn_path_es_unlink(es_info); | |
1551 | ||
1552 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1553 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1554 | es->esi_str); | |
26c03e43 AK |
1555 | |
1556 | /* link mac-ip path to the new destination ES */ | |
1557 | es_info->es = es; | |
1558 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1559 | if (es_info->vni) |
1560 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1561 | else | |
1562 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1563 | } |
1564 | ||
74efb822 AK |
1565 | static bool bgp_evpn_is_macip_path(struct bgp_path_info *pi) |
1566 | { | |
1567 | struct prefix_evpn *evp; | |
1568 | ||
1569 | /* Only MAC-IP routes need to be linked (MAC-only routes can be | |
1570 | * skipped) as these lists are maintained for managing | |
1571 | * host routes in the tenant VRF | |
1572 | */ | |
1573 | evp = (struct prefix_evpn *)&pi->net->p; | |
1574 | return is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp); | |
1575 | } | |
1576 | ||
58bff4d1 AK |
1577 | /* When a remote ES is added to a VRF, routes using that as |
1578 | * a destination need to be migrated to a L3NHG or viceversa. | |
1579 | * This is done indirectly by re-attempting an install of the | |
1580 | * route in the associated VRFs. As a part of the VRF install use | |
1581 | * of l3 NHG is evaluated and this results in the | |
1582 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1583 | */ |
1584 | static void | |
1585 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1586 | const char *reason) |
26c03e43 AK |
1587 | { |
1588 | struct listnode *node; | |
1589 | struct bgp_path_es_info *es_info; | |
1590 | struct bgp_path_info *pi; | |
58bff4d1 | 1591 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1592 | |
36dd4574 AK |
1593 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1594 | return; | |
1595 | ||
26c03e43 | 1596 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1597 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1598 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1599 | |
58bff4d1 | 1600 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1601 | pi = es_info->pi; |
26c03e43 | 1602 | |
74efb822 AK |
1603 | if (!bgp_evpn_is_macip_path(pi)) |
1604 | continue; | |
1605 | ||
26c03e43 | 1606 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
2eef4f20 | 1607 | zlog_debug( |
58bff4d1 AK |
1608 | "update path %pFX linked to es %s on vrf chg", |
1609 | &pi->net->p, es->esi_str); | |
1610 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1611 | 1); | |
26c03e43 AK |
1612 | } |
1613 | } | |
1614 | ||
c44ab6f1 AK |
1615 | /* compare ES-IDs for the global ES RB tree */ |
1616 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1617 | const struct bgp_evpn_es *es2) | |
1618 | { | |
1619 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1620 | } | |
1621 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1622 | ||
1623 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1624 | { |
c44ab6f1 | 1625 | struct bgp_evpn_es tmp; |
185fb14a | 1626 | |
185fb14a | 1627 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1628 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1629 | } |
1630 | ||
c44ab6f1 | 1631 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1632 | { |
c44ab6f1 | 1633 | struct bgp_evpn_es *es; |
185fb14a AK |
1634 | |
1635 | if (!bgp) | |
1636 | return NULL; | |
1637 | ||
c44ab6f1 | 1638 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1639 | |
c44ab6f1 | 1640 | /* set the ESI */ |
185fb14a | 1641 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1642 | |
1643 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1644 | es->es_vtep_list = list_new(); |
1645 | listset_app_node_mem(es->es_vtep_list); | |
1646 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1647 | |
c44ab6f1 | 1648 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1649 | |
c44ab6f1 | 1650 | /* Initialize the ES routing table */ |
185fb14a AK |
1651 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1652 | ||
c44ab6f1 AK |
1653 | /* Add to rb_tree */ |
1654 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1655 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1656 | return NULL; | |
1657 | } | |
1658 | ||
c44ab6f1 AK |
1659 | /* Initialise the ES-EVI list */ |
1660 | es->es_evi_list = list_new(); | |
1661 | listset_app_node_mem(es->es_evi_list); | |
1662 | ||
c589d847 AK |
1663 | /* Initialise the ES-VRF list used for L3NHG management */ |
1664 | es->es_vrf_list = list_new(); | |
1665 | listset_app_node_mem(es->es_vrf_list); | |
1666 | ||
26c03e43 | 1667 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1668 | es->macip_evi_path_list = list_new(); |
1669 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1670 | es->macip_global_path_list = list_new(); |
1671 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1672 | |
c44ab6f1 AK |
1673 | QOBJ_REG(es, bgp_evpn_es); |
1674 | ||
185fb14a AK |
1675 | return es; |
1676 | } | |
1677 | ||
c44ab6f1 | 1678 | /* Free a given ES - |
185fb14a AK |
1679 | * This just frees appropriate memory, caller should have taken other |
1680 | * needed actions. | |
1681 | */ | |
45a859f1 | 1682 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1683 | { |
26c03e43 | 1684 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1685 | || listcount(es->macip_evi_path_list) |
1686 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1687 | return; |
1688 | ||
45a859f1 AK |
1689 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1690 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1691 | ||
c44ab6f1 AK |
1692 | /* cleanup resources maintained against the ES */ |
1693 | list_delete(&es->es_evi_list); | |
c589d847 | 1694 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1695 | list_delete(&es->es_vtep_list); |
d656e0ae | 1696 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1697 | list_delete(&es->macip_global_path_list); |
185fb14a | 1698 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1699 | |
1700 | /* remove the entry from various databases */ | |
1701 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1702 | bgp_evpn_es_cons_checks_pend_del(es); | |
1703 | ||
185fb14a AK |
1704 | QOBJ_UNREG(es); |
1705 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1706 | } | |
1707 | ||
74efb822 AK |
1708 | static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es *es) |
1709 | { | |
1710 | return (es->flags & BGP_EVPNES_LOCAL) | |
1711 | && !(es->flags & BGP_EVPNES_BYPASS); | |
1712 | } | |
1713 | ||
c44ab6f1 AK |
1714 | /* init local info associated with the ES */ |
1715 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1716 | { |
c44ab6f1 | 1717 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
74efb822 AK |
1718 | bool old_is_local; |
1719 | bool is_local; | |
185fb14a | 1720 | |
c44ab6f1 AK |
1721 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1722 | return; | |
185fb14a | 1723 | |
74efb822 | 1724 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1725 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
74efb822 | 1726 | |
c44ab6f1 AK |
1727 | listnode_init(&es->es_listnode, es); |
1728 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1729 | |
c44ab6f1 AK |
1730 | /* auto derive RD for this es */ |
1731 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1732 | es->prd.family = AF_UNSPEC; | |
1733 | es->prd.prefixlen = 64; | |
23d0a753 | 1734 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 | 1735 | (void)str2prefix_rd(buf, &es->prd); |
74efb822 AK |
1736 | |
1737 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1738 | if (old_is_local != is_local) | |
1739 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
c44ab6f1 AK |
1740 | } |
1741 | ||
1742 | /* clear any local info associated with the ES */ | |
d57e0c05 | 1743 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es, bool finish) |
c44ab6f1 | 1744 | { |
74efb822 AK |
1745 | bool old_is_local; |
1746 | bool is_local; | |
1747 | ||
c44ab6f1 AK |
1748 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1749 | return; | |
185fb14a | 1750 | |
74efb822 | 1751 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1752 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1753 | |
74efb822 | 1754 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
d57e0c05 | 1755 | if (!finish && (old_is_local != is_local)) |
74efb822 AK |
1756 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); |
1757 | ||
c44ab6f1 AK |
1758 | /* remove from the ES local list */ |
1759 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1760 | ||
1761 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1762 | ||
45a859f1 | 1763 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1764 | } |
1765 | ||
c44ab6f1 AK |
1766 | /* eval remote info associated with the ES */ |
1767 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1768 | { | |
1769 | if (es->remote_es_evi_cnt) { | |
1770 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1771 | } else { | |
1772 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1773 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1774 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1775 | } |
1776 | } | |
1777 | } | |
1778 | ||
70524092 AK |
1779 | /* If ES is present and local it needs to be active/oper-up for |
1780 | * including L3 EC | |
1781 | */ | |
1782 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1783 | { |
70524092 AK |
1784 | struct bgp_evpn_es *es; |
1785 | ||
1786 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1787 | return true; | |
1788 | ||
1789 | es = bgp_evpn_es_find(esi); | |
1790 | ||
1791 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1792 | || bgp_evpn_local_es_is_active(es)); | |
1793 | } | |
1794 | ||
74efb822 AK |
1795 | static bool bgp_evpn_is_valid_local_path(struct bgp_path_info *pi) |
1796 | { | |
1797 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1798 | && pi->type == ZEBRA_ROUTE_BGP | |
1799 | && pi->sub_type == BGP_ROUTE_STATIC); | |
1800 | } | |
1801 | ||
d656e0ae AK |
1802 | /* Update all local MAC-IP routes in the VNI routing table associated |
1803 | * with the ES. When the ES is down the routes are advertised without | |
1804 | * the L3 extcomm | |
70524092 AK |
1805 | */ |
1806 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1807 | { | |
1808 | struct listnode *node; | |
1809 | struct bgp_path_es_info *es_info; | |
1810 | struct bgp_path_info *pi; | |
70524092 AK |
1811 | struct bgp *bgp; |
1812 | struct bgpevpn *vpn; | |
1813 | ||
1814 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1815 | return; | |
1816 | ||
1817 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1818 | zlog_debug("update paths linked to es %s on oper chg", | |
1819 | es->esi_str); | |
1820 | ||
1821 | bgp = bgp_get_evpn(); | |
d656e0ae | 1822 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 | 1823 | pi = es_info->pi; |
74efb822 AK |
1824 | |
1825 | if (!bgp_evpn_is_valid_local_path(pi)) | |
70524092 AK |
1826 | continue; |
1827 | ||
74efb822 | 1828 | if (!bgp_evpn_is_macip_path(pi)) |
70524092 AK |
1829 | continue; |
1830 | ||
1831 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1832 | if (!vpn) | |
1833 | continue; | |
1834 | ||
1835 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 | 1836 | zlog_debug( |
70545a29 AK |
1837 | "update path %d %pFX linked to es %s on oper chg", |
1838 | es_info->vni, &pi->net->p, es->esi_str); | |
70524092 AK |
1839 | |
1840 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1841 | __func__); | |
1842 | } | |
74be8313 AK |
1843 | } |
1844 | ||
74efb822 AK |
1845 | static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info *pi) |
1846 | { | |
1847 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1848 | && pi->type == ZEBRA_ROUTE_BGP | |
1849 | && pi->sub_type == BGP_ROUTE_NORMAL); | |
1850 | } | |
1851 | ||
1852 | /* If an ES is no longer local (or becomes local) we need to re-install | |
1853 | * paths using that ES as destination. This is needed as the criteria | |
1854 | * for best path selection has changed. | |
1855 | */ | |
1856 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, | |
1857 | bool is_local) | |
1858 | { | |
1859 | struct listnode *node; | |
1860 | struct bgp_path_es_info *es_info; | |
1861 | struct bgp_path_info *pi; | |
74efb822 AK |
1862 | bool tmp_local; |
1863 | struct attr *attr_new; | |
1864 | struct attr attr_tmp; | |
1865 | ||
1866 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1867 | zlog_debug("update paths linked to es %s on chg to %s", | |
1868 | es->esi_str, is_local ? "local" : "non-local"); | |
1869 | ||
1870 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { | |
1871 | pi = es_info->pi; | |
1872 | ||
1873 | /* Consider "valid" remote routes */ | |
1874 | if (!bgp_evpn_is_valid_bgp_path(pi)) | |
1875 | continue; | |
1876 | ||
1877 | if (!pi->attr) | |
1878 | continue; | |
1879 | ||
1880 | tmp_local = !!(pi->attr->es_flags & ATTR_ES_IS_LOCAL); | |
1881 | if (tmp_local == is_local) | |
1882 | continue; | |
1883 | ||
1884 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1885 | zlog_debug( | |
70545a29 AK |
1886 | "update path %pFX linked to es %s on chg to %s", |
1887 | &pi->net->p, es->esi_str, | |
1888 | is_local ? "local" : "non-local"); | |
74efb822 AK |
1889 | |
1890 | attr_tmp = *pi->attr; | |
1891 | if (is_local) | |
1892 | attr_tmp.es_flags |= ATTR_ES_IS_LOCAL; | |
1893 | else | |
1894 | attr_tmp.es_flags &= ~ATTR_ES_IS_LOCAL; | |
1895 | attr_new = bgp_attr_intern(&attr_tmp); | |
1896 | bgp_attr_unintern(&pi->attr); | |
1897 | pi->attr = attr_new; | |
1898 | bgp_evpn_import_type2_route(pi, 1); | |
1899 | } | |
1900 | } | |
1901 | ||
74be8313 AK |
1902 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, |
1903 | struct bgp_evpn_es *es) | |
185fb14a | 1904 | { |
185fb14a | 1905 | struct prefix_evpn p; |
c44ab6f1 | 1906 | int ret; |
185fb14a | 1907 | |
c44ab6f1 AK |
1908 | /* withdraw ESR */ |
1909 | /* Delete and withdraw locally learnt ES route */ | |
1910 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1911 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1912 | if (ret) { | |
1913 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1914 | "%u failed to delete type-4 route for ESI %s", | |
1915 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1916 | } |
1917 | ||
c44ab6f1 AK |
1918 | /* withdraw EAD-EVI */ |
1919 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1920 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1921 | |
c44ab6f1 AK |
1922 | /* withdraw EAD-ES */ |
1923 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1924 | &es->esi, es->originator_ip); | |
1925 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1926 | if (ret) { | |
1927 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1928 | "%u failed to delete type-1 route for ESI %s", | |
1929 | bgp->vrf_id, es->esi_str); | |
1930 | } | |
70524092 AK |
1931 | |
1932 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1933 | } |
1934 | ||
74be8313 AK |
1935 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1936 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1937 | { |
74be8313 | 1938 | bool old_active; |
c44ab6f1 | 1939 | |
74be8313 AK |
1940 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1941 | return; | |
c44ab6f1 | 1942 | |
74be8313 AK |
1943 | old_active = bgp_evpn_local_es_is_active(es); |
1944 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1945 | ||
1946 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1947 | zlog_debug("local es %s down", es->esi_str); | |
1948 | ||
1949 | if (old_active) | |
1950 | bgp_evpn_local_es_deactivate(bgp, es); | |
1951 | } | |
1952 | ||
1953 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1954 | bool regen_ead, bool regen_esr) | |
1955 | { | |
1956 | struct prefix_evpn p; | |
c44ab6f1 | 1957 | |
74e2bd89 AK |
1958 | if (regen_esr) { |
1959 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1960 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1961 | /* generate ESR */ | |
1962 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1963 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1964 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1965 | "%u: Type4 route creation failure for ESI %s", | |
1966 | bgp->vrf_id, es->esi_str); | |
1967 | } | |
c44ab6f1 | 1968 | |
74e2bd89 AK |
1969 | if (regen_ead) { |
1970 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1971 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1972 | /* generate EAD-EVI */ | |
1973 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1974 | |
74e2bd89 AK |
1975 | /* generate EAD-ES */ |
1976 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1977 | es->originator_ip); | |
d934e491 | 1978 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1979 | } |
70524092 AK |
1980 | |
1981 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1982 | } |
1983 | ||
74be8313 AK |
1984 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1985 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1986 | bool regen_esr) | |
1987 | { | |
1988 | bool regen_ead = false; | |
1989 | bool active = false; | |
1990 | ||
1991 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1992 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1993 | zlog_debug("local es %s up", es->esi_str); | |
1994 | ||
1995 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1996 | regen_esr = true; | |
1997 | regen_ead = true; | |
1998 | } | |
1999 | ||
2000 | active = bgp_evpn_local_es_is_active(es); | |
2001 | if (active && (regen_ead || regen_esr)) | |
2002 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
2003 | } | |
2004 | ||
2005 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
2006 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
2007 | * bypass state. | |
2008 | * PS: EAD-per-EVI will continue to be advertised | |
2009 | */ | |
2010 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
2011 | struct bgp_evpn_es *es, bool bypass) | |
2012 | { | |
2013 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
2014 | bool old_active; | |
2015 | bool new_active; | |
74efb822 AK |
2016 | bool old_is_local; |
2017 | bool is_local; | |
74be8313 AK |
2018 | |
2019 | if (bypass == old_bypass) | |
2020 | return; | |
2021 | ||
2022 | old_active = bgp_evpn_local_es_is_active(es); | |
74efb822 | 2023 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
74be8313 AK |
2024 | if (bypass) |
2025 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2026 | else | |
2027 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2028 | ||
2029 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2030 | zlog_debug("local es %s bypass %s", es->esi_str, | |
2031 | bypass ? "set" : "clear"); | |
2032 | ||
2033 | new_active = bgp_evpn_local_es_is_active(es); | |
2034 | if (old_active != new_active) { | |
2035 | if (new_active) | |
2036 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
2037 | else | |
2038 | bgp_evpn_local_es_deactivate(bgp, es); | |
2039 | } | |
74efb822 AK |
2040 | |
2041 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
2042 | if (old_is_local != is_local) | |
2043 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
74be8313 AK |
2044 | } |
2045 | ||
c44ab6f1 AK |
2046 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
2047 | { | |
2048 | struct bgp_evpn_es_evi *es_evi; | |
2049 | struct listnode *evi_node, *evi_next_node; | |
2050 | ||
2051 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2052 | zlog_debug("del local es %s", es->esi_str); | |
2053 | ||
2054 | /* Delete all local EVPN ES routes from ESI table | |
2055 | * and schedule for processing (to withdraw from peers)) | |
2056 | */ | |
2057 | bgp_evpn_es_route_del_all(bgp, es); | |
2058 | ||
2059 | /* release all local ES EVIs associated with the ES */ | |
2060 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
2061 | evi_next_node, es_evi)) { | |
2062 | bgp_evpn_local_es_evi_do_del(es_evi); | |
2063 | } | |
2064 | ||
2065 | /* Clear local info associated with the ES and free it up if there is | |
2066 | * no remote reference | |
2067 | */ | |
d57e0c05 | 2068 | bgp_evpn_es_local_info_clear(es, false); |
c44ab6f1 AK |
2069 | } |
2070 | ||
74efb822 | 2071 | bool bgp_evpn_is_esi_local_and_non_bypass(esi_t *esi) |
7904e9fd AK |
2072 | { |
2073 | struct bgp_evpn_es *es = NULL; | |
2074 | ||
2075 | /* Lookup ESI hash - should exist. */ | |
2076 | es = bgp_evpn_es_find(esi); | |
74efb822 AK |
2077 | |
2078 | return es && bgp_evpn_is_es_local_and_non_bypass(es); | |
7904e9fd AK |
2079 | } |
2080 | ||
c44ab6f1 AK |
2081 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
2082 | { | |
2083 | struct bgp_evpn_es *es = NULL; | |
2084 | ||
2085 | /* Lookup ESI hash - should exist. */ | |
2086 | es = bgp_evpn_es_find(esi); | |
2087 | if (!es) { | |
eaf80288 DA |
2088 | flog_warn(EC_BGP_EVPN_ESI, "%u: ES missing at local ES DEL", |
2089 | bgp->vrf_id); | |
c44ab6f1 AK |
2090 | return -1; |
2091 | } | |
2092 | ||
2093 | bgp_evpn_local_es_do_del(bgp, es); | |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | /* Handle device to ES id association. Results in the creation of a local | |
2098 | * ES. | |
2099 | */ | |
2100 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 2101 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 2102 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
2103 | { |
2104 | char buf[ESI_STR_LEN]; | |
2105 | struct bgp_evpn_es *es; | |
2106 | bool new_es = true; | |
74e2bd89 | 2107 | bool regen_esr = false; |
c44ab6f1 AK |
2108 | |
2109 | /* create the new es */ | |
2110 | es = bgp_evpn_es_find(esi); | |
2111 | if (es) { | |
2112 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
2113 | new_es = false; | |
2114 | } else { | |
2115 | es = bgp_evpn_es_new(bgp, esi); | |
2116 | if (!es) { | |
2117 | flog_err(EC_BGP_ES_CREATE, | |
2118 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
2119 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
2120 | return -1; | |
2121 | } | |
2122 | } | |
2123 | ||
2124 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
2125 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
2126 | es->esi_str, &originator_ip, df_pref, | |
2127 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
2128 | |
2129 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
2130 | if (df_pref != es->df_pref) { |
2131 | es->df_pref = df_pref; | |
2132 | regen_esr = true; | |
2133 | } | |
c44ab6f1 AK |
2134 | bgp_evpn_es_local_info_set(bgp, es); |
2135 | ||
2136 | /* import all remote Type-4 routes in the ES table */ | |
2137 | if (new_es) | |
2138 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
2139 | true /* install */); | |
2140 | ||
2141 | /* create and advertise EAD-EVI routes for the ES - | |
2142 | * XXX - till an ES-EVI reference is created there is really nothing to | |
2143 | * advertise | |
2144 | */ | |
2145 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
2146 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
2147 | ||
74be8313 AK |
2148 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
2149 | ||
c44ab6f1 AK |
2150 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
2151 | * can be generated even if the link is inactive. | |
2152 | */ | |
2153 | if (oper_up) | |
74e2bd89 | 2154 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
2155 | else |
2156 | bgp_evpn_local_es_down(bgp, es); | |
2157 | ||
2158 | return 0; | |
2159 | } | |
2160 | ||
9e0c2fd1 AK |
2161 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2162 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2163 | { |
2164 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2165 | struct listnode *node; | |
2166 | struct bgp_evpn_es_vtep *es_vtep; | |
2167 | bool first = true; | |
ec779825 | 2168 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2169 | |
2170 | vtep_str[0] = '\0'; | |
2171 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2172 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2173 | |
c44ab6f1 | 2174 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2175 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2176 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2177 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2178 | |
2179 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2180 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2181 | if (first) | |
c44ab6f1 | 2182 | first = false; |
9e0c2fd1 AK |
2183 | else |
2184 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2185 | strlcat(vtep_str, |
ec779825 AK |
2186 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2187 | sizeof(ip_buf)), | |
23d0a753 | 2188 | vtep_str_size); |
9e0c2fd1 AK |
2189 | strlcat(vtep_str, "(", vtep_str_size); |
2190 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2191 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2192 | } |
2193 | ||
2194 | return vtep_str; | |
2195 | } | |
2196 | ||
c44ab6f1 AK |
2197 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2198 | struct bgp_evpn_es_vtep *es_vtep) | |
2199 | { | |
2200 | json_object *json_vtep_entry; | |
2201 | json_object *json_flags; | |
2202 | ||
2203 | json_vtep_entry = json_object_new_object(); | |
2204 | ||
c949c771 DA |
2205 | json_object_string_addf(json_vtep_entry, "vtep_ip", "%pI4", |
2206 | &es_vtep->vtep_ip); | |
c44ab6f1 AK |
2207 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2208 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2209 | json_flags = json_object_new_array(); | |
2210 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2211 | json_array_string_add(json_flags, "esr"); | |
2212 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2213 | json_array_string_add(json_flags, "active"); | |
2214 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2215 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2216 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2217 | es_vtep->df_pref); | |
2218 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2219 | es_vtep->df_pref); | |
2220 | } | |
c44ab6f1 AK |
2221 | } |
2222 | ||
2223 | json_object_array_add(json_vteps, | |
2224 | json_vtep_entry); | |
2225 | } | |
2226 | ||
74e2bd89 AK |
2227 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2228 | struct bgp_evpn_es *es) | |
2229 | { | |
2230 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2231 | struct listnode *node; | |
2232 | struct bgp_evpn_es_vtep *es_vtep; | |
2233 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2234 | ||
2235 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2236 | vtep_flag_str[0] = '\0'; | |
2237 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2238 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2239 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2240 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2241 | ||
2242 | if (!strlen(vtep_flag_str)) | |
2243 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2244 | ||
ec779825 | 2245 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2246 | vtep_flag_str); |
2247 | ||
2248 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2249 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2250 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2251 | sizeof(alg_buf)), | |
2252 | es_vtep->df_pref); | |
2253 | else | |
2254 | vty_out(vty, "\n"); | |
2255 | } | |
2256 | } | |
2257 | ||
c44ab6f1 AK |
2258 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2259 | struct bgp_evpn_es *es, json_object *json) | |
2260 | { | |
2261 | char buf1[RD_ADDRSTRLEN]; | |
2262 | struct listnode *node; | |
2263 | struct bgp_evpn_es_vtep *es_vtep; | |
2264 | ||
2265 | if (json) { | |
2266 | json_object *json_vteps; | |
2267 | json_object *json_types; | |
2268 | ||
2269 | json_object_string_add(json, "esi", es->esi_str); | |
2270 | json_object_string_add(json, "rd", | |
2271 | prefix_rd2str(&es->prd, buf1, | |
2272 | sizeof(buf1))); | |
2273 | ||
2274 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2275 | json_types = json_object_new_array(); | |
2276 | if (es->flags & BGP_EVPNES_LOCAL) | |
2277 | json_array_string_add(json_types, "local"); | |
2278 | if (es->flags & BGP_EVPNES_REMOTE) | |
2279 | json_array_string_add(json_types, "remote"); | |
2280 | json_object_object_add(json, "type", json_types); | |
2281 | } | |
2282 | ||
2283 | if (listcount(es->es_vtep_list)) { | |
2284 | json_vteps = json_object_new_array(); | |
2285 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2286 | node, es_vtep)) { | |
2287 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2288 | } | |
2289 | json_object_object_add(json, "vteps", json_vteps); | |
2290 | } | |
2291 | json_object_int_add(json, "vniCount", | |
2292 | listcount(es->es_evi_list)); | |
2293 | } else { | |
2294 | char type_str[4]; | |
2295 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2296 | ||
2297 | type_str[0] = '\0'; | |
74be8313 AK |
2298 | if (es->flags & BGP_EVPNES_BYPASS) |
2299 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2300 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2301 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2302 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2303 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2304 | if (es->inconsistencies) |
9e0c2fd1 | 2305 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2306 | |
9e0c2fd1 | 2307 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2308 | |
2309 | if (es->flags & BGP_EVPNES_LOCAL) | |
2310 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2311 | else | |
9e0c2fd1 | 2312 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2313 | |
2314 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2315 | es->esi_str, type_str, buf1, | |
2316 | listcount(es->es_evi_list), vtep_str); | |
2317 | } | |
2318 | } | |
2319 | ||
2320 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2321 | struct bgp_evpn_es *es, json_object *json) | |
2322 | { | |
2323 | if (json) { | |
2324 | json_object *json_flags; | |
2325 | json_object *json_incons; | |
74e2bd89 AK |
2326 | json_object *json_vteps; |
2327 | struct listnode *node; | |
2328 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2329 | |
2330 | /* Add the "brief" info first */ | |
2331 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2332 | if (es->flags |
2333 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2334 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2335 | json_flags = json_object_new_array(); |
2336 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2337 | json_array_string_add(json_flags, "up"); | |
2338 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2339 | json_array_string_add(json_flags, | |
2340 | "advertiseEVI"); | |
74be8313 AK |
2341 | if (es->flags & BGP_EVPNES_BYPASS) |
2342 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2343 | json_object_object_add(json, "flags", json_flags); |
2344 | } | |
c949c771 DA |
2345 | json_object_string_addf(json, "originator_ip", "%pI4", |
2346 | &es->originator_ip); | |
c44ab6f1 AK |
2347 | json_object_int_add(json, "remoteVniCount", |
2348 | es->remote_es_evi_cnt); | |
229587fb AK |
2349 | json_object_int_add(json, "vrfCount", |
2350 | listcount(es->es_vrf_list)); | |
2351 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2352 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2353 | json_object_int_add(json, "macipGlobalPathCount", |
2354 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2355 | json_object_int_add(json, "inconsistentVniVtepCount", |
2356 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2357 | if (listcount(es->es_vtep_list)) { |
2358 | json_vteps = json_object_new_array(); | |
2359 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2360 | es_vtep)) { | |
2361 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2362 | } | |
2363 | json_object_object_add(json, "vteps", json_vteps); | |
2364 | } | |
c44ab6f1 AK |
2365 | if (es->inconsistencies) { |
2366 | json_incons = json_object_new_array(); | |
2367 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2368 | json_array_string_add(json_incons, | |
2369 | "vni-vtep-mismatch"); | |
2370 | json_object_object_add(json, "inconsistencies", | |
2371 | json_incons); | |
2372 | } | |
2373 | } else { | |
2374 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2375 | char type_str[4]; | |
c44ab6f1 AK |
2376 | char buf1[RD_ADDRSTRLEN]; |
2377 | ||
2378 | type_str[0] = '\0'; | |
2379 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2380 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2381 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2382 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2383 | |
c44ab6f1 AK |
2384 | if (es->flags & BGP_EVPNES_LOCAL) |
2385 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2386 | else | |
9e0c2fd1 | 2387 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2388 | |
2389 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2390 | vty_out(vty, " Type: %s\n", type_str); | |
2391 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2392 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2393 | if (es->flags & BGP_EVPNES_LOCAL) |
2394 | vty_out(vty, " Local ES DF preference: %u\n", | |
2395 | es->df_pref); | |
74be8313 AK |
2396 | if (es->flags & BGP_EVPNES_BYPASS) |
2397 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2398 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2399 | vty_out(vty, " Remote VNI Count: %d\n", | |
2400 | es->remote_es_evi_cnt); | |
229587fb | 2401 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2402 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2403 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2404 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2405 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2406 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2407 | es->incons_evi_vtep_cnt); | |
2408 | if (es->inconsistencies) { | |
2409 | incons_str[0] = '\0'; | |
2410 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2411 | strlcat(incons_str, "vni-vtep-mismatch", |
2412 | sizeof(incons_str)); | |
c44ab6f1 | 2413 | } else { |
9e0c2fd1 | 2414 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2415 | } |
2416 | vty_out(vty, " Inconsistencies: %s\n", | |
2417 | incons_str); | |
74e2bd89 AK |
2418 | if (listcount(es->es_vtep_list)) { |
2419 | vty_out(vty, " VTEPs:\n"); | |
2420 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2421 | } | |
c44ab6f1 AK |
2422 | vty_out(vty, "\n"); |
2423 | } | |
2424 | } | |
2425 | ||
2426 | /* Display all ESs */ | |
2427 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2428 | { | |
2429 | struct bgp_evpn_es *es; | |
9c7edc03 | 2430 | json_object *json_array = NULL; |
c44ab6f1 AK |
2431 | json_object *json = NULL; |
2432 | ||
2433 | if (uj) { | |
2434 | /* create an array of ESs */ | |
2435 | json_array = json_object_new_array(); | |
2436 | } else { | |
2437 | if (!detail) { | |
2438 | vty_out(vty, | |
74be8313 | 2439 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2440 | vty_out(vty, |
2441 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2442 | vty_out(vty, | |
2443 | "%-30s %-5s %-21s %-8s %s\n", | |
2444 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2449 | if (uj) | |
2450 | /* create a separate json object for each ES */ | |
2451 | json = json_object_new_object(); | |
2452 | if (detail) | |
2453 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2454 | else | |
2455 | bgp_evpn_es_show_entry(vty, es, json); | |
2456 | /* add ES to the json array */ | |
2457 | if (uj) | |
2458 | json_object_array_add(json_array, json); | |
2459 | } | |
2460 | ||
2461 | /* print the array of json-ESs */ | |
c48349e3 | 2462 | if (uj) |
75eeda93 | 2463 | vty_json(vty, json_array); |
c44ab6f1 AK |
2464 | } |
2465 | ||
2466 | /* Display specific ES */ | |
2467 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2468 | { | |
2469 | struct bgp_evpn_es *es; | |
2470 | json_object *json = NULL; | |
2471 | ||
2472 | if (uj) | |
2473 | json = json_object_new_object(); | |
2474 | ||
2475 | es = bgp_evpn_es_find(esi); | |
2476 | if (es) { | |
2477 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2478 | } else { | |
2479 | if (!uj) | |
2480 | vty_out(vty, "ESI not found\n"); | |
2481 | } | |
2482 | ||
c48349e3 | 2483 | if (uj) |
75eeda93 | 2484 | vty_json(vty, json); |
c44ab6f1 AK |
2485 | } |
2486 | ||
c589d847 AK |
2487 | /*****************************************************************************/ |
2488 | /* Ethernet Segment to VRF association - | |
2489 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2490 | * triggers the creation of an ES-VRF entry. | |
2491 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2492 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2493 | * a /32 or host route entry in the dataplane. If the destination of | |
2494 | * the host route is a remote-ES the route is programmed with the | |
2495 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2496 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2497 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2498 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2499 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2500 | * allowing for a faster failover. | |
2501 | * | |
2502 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2503 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2504 | * in that VRF. | |
2505 | */ | |
2506 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2507 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2508 | bool v4_nhg) | |
c589d847 | 2509 | { |
8bcb09a1 AK |
2510 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2511 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2512 | struct listnode *node; |
2513 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2514 | struct nexthop nh; |
2515 | struct zapi_nexthop *api_nh; | |
2516 | struct zapi_nhg api_nhg = {}; | |
2517 | ||
2518 | /* Skip installation of L3-NHG if host routes used */ | |
2519 | if (!nhg_id) | |
2520 | return; | |
c589d847 AK |
2521 | |
2522 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2523 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2524 | es_vrf->bgp_vrf->vrf_id, | |
2525 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2526 | ||
23aa35ad AK |
2527 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, true, v4_nhg, nhg_id, es_vrf); |
2528 | ||
8bcb09a1 AK |
2529 | /* only the gateway ip changes for each NH. rest of the params |
2530 | * are constant | |
2531 | */ | |
2532 | memset(&nh, 0, sizeof(nh)); | |
2533 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2534 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2535 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2536 | nh.weight = 1; | |
2537 | nh.type = | |
2538 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2539 | ||
2540 | api_nhg.id = nhg_id; | |
c589d847 | 2541 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2542 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2543 | continue; | |
2544 | ||
719b209c MS |
2545 | /* Don't overrun the zapi buffer. */ |
2546 | if (api_nhg.nexthop_num == MULTIPATH_NUM) | |
2547 | break; | |
2548 | ||
8bcb09a1 AK |
2549 | /* overwrite the gw */ |
2550 | if (v4_nhg) | |
2551 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2552 | else | |
2553 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2554 | es_vtep->vtep_ip); | |
2555 | ||
2556 | /* convert to zapi format */ | |
2557 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2558 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2559 | ||
2560 | ++api_nhg.nexthop_num; | |
2561 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2562 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2563 | &es_vtep->vtep_ip, | |
2564 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
23aa35ad AK |
2565 | |
2566 | frrtrace(3, frr_bgp, evpn_mh_nh_zsend, nhg_id, es_vtep, es_vrf); | |
c589d847 AK |
2567 | } |
2568 | ||
8bcb09a1 AK |
2569 | if (!api_nhg.nexthop_num) |
2570 | return; | |
2571 | ||
8bcb09a1 | 2572 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); |
c589d847 AK |
2573 | } |
2574 | ||
8bcb09a1 AK |
2575 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2576 | { | |
2577 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2578 | return false; | |
2579 | ||
2580 | /* Check socket. */ | |
2581 | if (!zclient || zclient->sock < 0) | |
2582 | return false; | |
2583 | ||
2584 | return true; | |
2585 | } | |
2586 | ||
2587 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2588 | { |
8bcb09a1 AK |
2589 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2590 | return; | |
2591 | ||
2592 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2593 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2594 | } | |
2595 | ||
2596 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2597 | bool v4_nhg) | |
2598 | { | |
2599 | struct zapi_nhg api_nhg = {}; | |
2600 | ||
2601 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2602 | ||
2603 | /* Skip installation of L3-NHG if host routes used */ | |
2604 | if (!api_nhg.id) | |
2605 | return; | |
2606 | ||
c589d847 | 2607 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2608 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2609 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2610 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2611 | ||
23aa35ad AK |
2612 | |
2613 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, false, v4_nhg, api_nhg.id, | |
2614 | es_vrf); | |
2615 | ||
8bcb09a1 AK |
2616 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); |
2617 | } | |
c589d847 | 2618 | |
8bcb09a1 AK |
2619 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2620 | { | |
2621 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2622 | return; | |
2623 | ||
2624 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2625 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2626 | } |
2627 | ||
2628 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2629 | { | |
2630 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2631 | return; | |
2632 | ||
2633 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2634 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2635 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2636 | es_vrf->nhg_id); | |
2637 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2638 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2639 | /* MAC-IPs can now be installed via the L3NHG */ |
2640 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2641 | } |
2642 | ||
2643 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2644 | { | |
2645 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2646 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2647 | return; | |
2648 | } | |
2649 | ||
2650 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2651 | if (!update) | |
2652 | return; | |
2653 | } else { | |
2654 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2655 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2656 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2657 | es_vrf->nhg_id); | |
2658 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2659 | /* MAC-IPs can now be installed via the L3NHG */ |
2660 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2661 | } |
2662 | ||
2663 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2664 | } | |
2665 | ||
2666 | /* when a VTEP is activated or de-activated against an ES associated | |
2667 | * VRFs' NHG needs to be updated | |
2668 | */ | |
2669 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2670 | { | |
2671 | struct bgp_evpn_es_vrf *es_vrf; | |
2672 | struct listnode *es_vrf_node; | |
2673 | ||
2674 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2675 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2676 | ||
2677 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2678 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2679 | } | |
2680 | ||
2681 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2682 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2683 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2684 | { | |
2685 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2686 | } | |
2687 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2688 | ||
2689 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2690 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2691 | { | |
2692 | /* Initialize the ES-VRF RB tree */ | |
2693 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2694 | } | |
2695 | ||
2696 | /* find the ES-VRF in the per-VRF RB tree */ | |
2697 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2698 | struct bgp *bgp_vrf) | |
2699 | { | |
2700 | struct bgp_evpn_es_vrf es_vrf; | |
2701 | ||
2702 | es_vrf.es = es; | |
2703 | ||
2704 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2705 | } | |
2706 | ||
2707 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2708 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2709 | struct bgp *bgp_vrf) | |
2710 | { | |
2711 | struct bgp_evpn_es_vrf *es_vrf; | |
2712 | ||
2713 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2714 | ||
2715 | es_vrf->es = es; | |
2716 | es_vrf->bgp_vrf = bgp_vrf; | |
2717 | ||
2718 | /* insert into the VRF-ESI rb tree */ | |
2719 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2720 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2721 | return NULL; | |
2722 | } | |
2723 | ||
2724 | /* add to the ES's VRF list */ | |
2725 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2726 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2727 | ||
2728 | /* setup the L3 NHG id for the ES */ | |
2729 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2730 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2731 | ||
c589d847 | 2732 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2733 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2734 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2735 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2736 | ||
36dd4574 AK |
2737 | /* update paths in the VRF that may already be associated with |
2738 | * this destination ES | |
2739 | */ | |
58bff4d1 | 2740 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2741 | |
c589d847 AK |
2742 | return es_vrf; |
2743 | } | |
2744 | ||
2745 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2746 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2747 | { | |
2748 | struct bgp_evpn_es *es = es_vrf->es; | |
2749 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2750 | ||
2751 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2752 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2753 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2754 | ||
2755 | /* Remove the NHG resources */ | |
2756 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2757 | if (es_vrf->nhg_id) | |
2758 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2759 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2760 | if (es_vrf->v6_nhg_id) |
2761 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2762 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2763 | |
2764 | /* remove from the ES's VRF list */ | |
2765 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2766 | ||
2767 | /* remove from the VRF-ESI rb tree */ | |
2768 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2769 | ||
d656e0ae AK |
2770 | /* update paths in the VRF that may already be associated with |
2771 | * this destination ES | |
2772 | */ | |
58bff4d1 | 2773 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2774 | |
c589d847 AK |
2775 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2776 | } | |
2777 | ||
2778 | /* deref and delete if there are no references */ | |
2779 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2780 | { | |
2781 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2782 | ||
2783 | if (!es_vrf) | |
2784 | return; | |
2785 | ||
2786 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2787 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2788 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2789 | es_vrf->bgp_vrf->vrf_id); | |
2790 | ||
2791 | es_evi->es_vrf = NULL; | |
2792 | if (es_vrf->ref_cnt) | |
2793 | --es_vrf->ref_cnt; | |
2794 | ||
2795 | if (!es_vrf->ref_cnt) | |
2796 | bgp_evpn_es_vrf_delete(es_vrf); | |
2797 | } | |
2798 | ||
2799 | /* find or create and reference */ | |
2800 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2801 | { | |
2802 | struct bgp_evpn_es *es = es_evi->es; | |
2803 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2804 | struct bgp *old_bgp_vrf = NULL; | |
2805 | ||
2806 | if (es_vrf) | |
2807 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2808 | ||
2809 | if (old_bgp_vrf == bgp_vrf) | |
2810 | return; | |
2811 | ||
2812 | /* deref the old ES-VRF */ | |
2813 | bgp_evpn_es_vrf_deref(es_evi); | |
2814 | ||
2815 | if (!bgp_vrf) | |
2816 | return; | |
2817 | ||
2818 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2819 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2820 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2821 | ||
2822 | /* find-create the new ES-VRF */ | |
2823 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2824 | if (!es_vrf) | |
2825 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2826 | if (!es_vrf) | |
2827 | return; | |
2828 | ||
2829 | es_evi->es_vrf = es_vrf; | |
2830 | ++es_vrf->ref_cnt; | |
2831 | } | |
2832 | ||
2833 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2834 | * associated ES-EVI entries | |
2835 | */ | |
2836 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2837 | { | |
2838 | struct bgp_evpn_es_evi *es_evi; | |
2839 | ||
2840 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2841 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2842 | ||
2843 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2844 | bgp_evpn_es_vrf_deref(es_evi); | |
2845 | } | |
2846 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2847 | { | |
2848 | struct bgp_evpn_es_evi *es_evi; | |
2849 | ||
2850 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2851 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2852 | ||
2853 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2854 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2855 | } | |
2856 | ||
58bff4d1 AK |
2857 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2858 | * multi-path list. | |
2859 | * 2. If ES-VRF is present - | |
2860 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2861 | * all the PEs attached to the VRF are down) do not install the route | |
2862 | * in zebra. | |
2863 | * - if L3NHG has been activated install the route via that L3NHG | |
2864 | */ | |
2865 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2866 | bool *is_l3nhg_active, | |
2867 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2868 | { |
2869 | struct bgp_evpn_es *es; | |
2870 | struct bgp_evpn_es_vrf *es_vrf; | |
2871 | ||
2872 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2873 | return; |
36dd4574 AK |
2874 | |
2875 | es = bgp_evpn_es_find(esi); | |
2876 | if (!es) | |
58bff4d1 | 2877 | return; |
36dd4574 AK |
2878 | |
2879 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2880 | if (!es_vrf) | |
58bff4d1 AK |
2881 | return; |
2882 | ||
2883 | *use_l3nhg = true; | |
2884 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2885 | *is_l3nhg_active = true; | |
36dd4574 AK |
2886 | if (es_vrf_p) |
2887 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2888 | } |
2889 | ||
6348981a AK |
2890 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2891 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2892 | uint32_t *nhg_p) | |
2893 | { | |
2894 | esi_t *esi; | |
36dd4574 | 2895 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2896 | struct bgp_path_info *parent_pi; |
2897 | struct bgp_node *rn; | |
2898 | struct prefix_evpn *evp; | |
2899 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2900 | bool use_l3nhg = false; |
2901 | bool is_l3nhg_active = false; | |
6348981a AK |
2902 | |
2903 | *nhg_p = 0; | |
2904 | ||
9f570418 AK |
2905 | /* we don't support NHG for routes leaked from another VRF yet */ |
2906 | if (pi->extra && pi->extra->bgp_orig) | |
2907 | return false; | |
2908 | ||
6348981a AK |
2909 | parent_pi = get_route_parent_evpn(pi); |
2910 | if (!parent_pi) | |
2911 | return false; | |
2912 | ||
2913 | rn = parent_pi->net; | |
2914 | if (!rn) | |
2915 | return false; | |
2916 | ||
2917 | evp = (struct prefix_evpn *)&rn->p; | |
2918 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2919 | return false; | |
2920 | ||
6348981a AK |
2921 | /* non-es path, use legacy-exploded multipath */ |
2922 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2923 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2924 | return false; | |
2925 | ||
58bff4d1 AK |
2926 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2927 | &es_vrf); | |
2928 | ||
36dd4574 | 2929 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2930 | if (!use_l3nhg) |
36dd4574 AK |
2931 | return false; |
2932 | ||
2933 | /* if the NHG has not been installed we cannot install the route yet, | |
2934 | * return a 0-NHG to indicate that | |
6348981a | 2935 | */ |
58bff4d1 | 2936 | if (!is_l3nhg_active) |
6348981a AK |
2937 | return true; |
2938 | ||
2939 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2940 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2941 | *nhg_p = es_vrf->v6_nhg_id; |
2942 | else | |
2943 | *nhg_p = es_vrf->nhg_id; | |
2944 | ||
2945 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2946 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2947 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2948 | * the NHG associated with the ES. fallback to legacy-exploded |
2949 | * multipath | |
2950 | */ | |
2951 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2952 | sizeof(*esi))) | |
2953 | return false; | |
2954 | } | |
2955 | ||
2956 | return true; | |
2957 | } | |
2958 | ||
229587fb AK |
2959 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2960 | struct bgp_evpn_es_vrf *es_vrf, | |
2961 | json_object *json) | |
2962 | { | |
2963 | struct bgp_evpn_es *es = es_vrf->es; | |
2964 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2965 | ||
2966 | if (json) { | |
2967 | json_object *json_types; | |
2968 | ||
2969 | json_object_string_add(json, "esi", es->esi_str); | |
2970 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2971 | ||
2972 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2973 | json_types = json_object_new_array(); | |
2974 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2975 | json_array_string_add(json_types, "active"); | |
2976 | json_object_object_add(json, "flags", json_types); | |
2977 | } | |
2978 | ||
2979 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2980 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2981 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2982 | } else { | |
2983 | char flags_str[4]; | |
2984 | ||
2985 | flags_str[0] = '\0'; | |
2986 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2987 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2988 | ||
2989 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2990 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2991 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2992 | } | |
2993 | } | |
2994 | ||
2995 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2996 | struct bgp_evpn_es *es) | |
2997 | { | |
2998 | json_object *json = NULL; | |
2999 | struct listnode *es_vrf_node; | |
3000 | struct bgp_evpn_es_vrf *es_vrf; | |
3001 | ||
3002 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
3003 | /* create a separate json object for each ES-VRF */ | |
3004 | if (json_array) | |
3005 | json = json_object_new_object(); | |
3006 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
3007 | /* add ES-VRF to the json array */ | |
3008 | if (json_array) | |
3009 | json_object_array_add(json_array, json); | |
3010 | } | |
3011 | } | |
3012 | ||
3013 | /* Display all ES VRFs */ | |
3014 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
3015 | { | |
3016 | json_object *json_array = NULL; | |
3017 | ||
3018 | if (uj) { | |
3019 | /* create an array of ESs */ | |
3020 | json_array = json_object_new_array(); | |
3021 | } else { | |
3022 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
3023 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
3024 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
3025 | } | |
3026 | ||
3027 | if (es) { | |
3028 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3029 | } else { | |
3030 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
3031 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3032 | } | |
3033 | ||
3034 | /* print the array of json-ESs */ | |
c48349e3 | 3035 | if (uj) |
75eeda93 | 3036 | vty_json(vty, json_array); |
229587fb AK |
3037 | } |
3038 | ||
3039 | /* Display specific ES VRF */ | |
3040 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
3041 | { | |
3042 | struct bgp_evpn_es *es; | |
3043 | ||
3044 | es = bgp_evpn_es_find(esi); | |
3045 | if (es) { | |
3046 | bgp_evpn_es_vrf_show(vty, uj, es); | |
3047 | } else { | |
3048 | if (!uj) | |
3049 | vty_out(vty, "ESI not found\n"); | |
3050 | } | |
3051 | } | |
3052 | ||
c44ab6f1 AK |
3053 | /*****************************************************************************/ |
3054 | /* Ethernet Segment to EVI association - | |
3055 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
3056 | * (bgpevpn->es_evi_rb_tree). | |
3057 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
3058 | * advertises an EAD-EVI (Type-1 EVPN) route | |
3059 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
3060 | * it. | |
3061 | */ | |
3062 | ||
3063 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
3064 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
3065 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
3066 | * VTEPs for which both routes have been rxed are activated. Activation | |
3067 | * creates a NHG in the parent ES. | |
3068 | */ | |
3069 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
3070 | { | |
3071 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
3072 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
3073 | ||
3074 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
3075 | } | |
3076 | ||
3077 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
3078 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3079 | { | |
3080 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3081 | ||
3082 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
3083 | ||
3084 | evi_vtep->es_evi = es_evi; | |
3085 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
3086 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
3087 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3088 | ||
3089 | return evi_vtep; | |
3090 | } | |
3091 | ||
3092 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3093 | { | |
3094 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
3095 | ||
3096 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
3097 | /* as long as there is some reference we can't free it */ | |
3098 | return; | |
3099 | ||
3100 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3101 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
3102 | } | |
3103 | ||
3104 | /* check if VTEP is already part of the list */ | |
3105 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
3106 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3107 | { | |
3108 | struct listnode *node = NULL; | |
3109 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3110 | ||
3111 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3112 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
3113 | return evi_vtep; | |
3114 | } | |
3115 | return NULL; | |
3116 | } | |
3117 | ||
3118 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
3119 | * EAD-per-EVI routes are rxed from it. | |
3120 | */ | |
3121 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
3122 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3123 | { | |
3124 | bool old_active; | |
3125 | bool new_active; | |
fe8293c3 | 3126 | uint32_t ead_activity_flags; |
c44ab6f1 | 3127 | |
d4980edf | 3128 | old_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 | 3129 | |
fe8293c3 AK |
3130 | if (bgp_mh_info->ead_evi_rx) |
3131 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
3132 | * before it can be activated. | |
3133 | */ | |
3134 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
3135 | else | |
3136 | /* EAD-per-ES is sufficent to activate the PE */ | |
3137 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
3138 | ||
3139 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
3140 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
3141 | else | |
3142 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3143 | ||
d4980edf | 3144 | new_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 AK |
3145 | |
3146 | if (old_active == new_active) | |
3147 | return; | |
3148 | ||
3149 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3150 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3151 | evi_vtep->es_evi->es->esi_str, | |
3152 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3153 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3154 | |
3155 | /* add VTEP to parent es */ | |
3156 | if (new_active) { | |
3157 | struct bgp_evpn_es_vtep *es_vtep; | |
3158 | ||
3159 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
3160 | evi_vtep->vtep_ip, false /*esr*/, |
3161 | 0, 0); | |
c44ab6f1 AK |
3162 | evi_vtep->es_vtep = es_vtep; |
3163 | } else { | |
3164 | if (evi_vtep->es_vtep) { | |
3165 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3166 | false /*esr*/); | |
3167 | evi_vtep->es_vtep = NULL; | |
3168 | } | |
3169 | } | |
3170 | /* queue up the parent es for background consistency checks */ | |
3171 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3172 | } | |
3173 | ||
3174 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3175 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3176 | bool ead_es) | |
3177 | { | |
3178 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3179 | ||
3180 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3181 | ||
3182 | if (!evi_vtep) | |
3183 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3184 | ||
3185 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3186 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3187 | evi_vtep->es_evi->es->esi_str, | |
3188 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3189 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3190 | |
3191 | if (ead_es) | |
3192 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3193 | else | |
3194 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3195 | ||
3196 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3197 | } | |
3198 | ||
3199 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3200 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3201 | bool ead_es) | |
3202 | { | |
3203 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3204 | ||
3205 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3206 | if (!evi_vtep) | |
3207 | return; | |
3208 | ||
3209 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3210 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3211 | evi_vtep->es_evi->es->esi_str, | |
3212 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3213 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3214 | |
3215 | if (ead_es) | |
3216 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3217 | else | |
3218 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3219 | ||
3220 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3221 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3222 | } | |
3223 | ||
3224 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3225 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3226 | const struct bgp_evpn_es_evi *es_evi2) | |
3227 | { | |
3228 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3229 | } | |
3230 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3231 | ||
3232 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3233 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3234 | struct bgpevpn *vpn) | |
3235 | { | |
3236 | struct bgp_evpn_es_evi es_evi; | |
3237 | ||
3238 | es_evi.es = es; | |
3239 | ||
3240 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3241 | } | |
3242 | ||
3243 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3244 | * tables. | |
3245 | */ | |
3246 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3247 | struct bgpevpn *vpn) | |
3248 | { | |
3249 | struct bgp_evpn_es_evi *es_evi; | |
3250 | ||
3251 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3252 | ||
3253 | es_evi->es = es; | |
3254 | es_evi->vpn = vpn; | |
3255 | ||
3256 | /* Initialise the VTEP list */ | |
3257 | es_evi->es_evi_vtep_list = list_new(); | |
3258 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3259 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3260 | ||
3261 | /* insert into the VNI-ESI rb tree */ | |
3262 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3263 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3264 | return NULL; | |
3265 | } | |
3266 | ||
3267 | /* add to the ES's VNI list */ | |
3268 | listnode_init(&es_evi->es_listnode, es_evi); | |
3269 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3270 | ||
c589d847 AK |
3271 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3272 | ||
c44ab6f1 AK |
3273 | return es_evi; |
3274 | } | |
3275 | ||
3276 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3277 | * up the memory. | |
3278 | */ | |
333ad64b AK |
3279 | static struct bgp_evpn_es_evi * |
3280 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3281 | { |
3282 | struct bgp_evpn_es *es = es_evi->es; | |
3283 | struct bgpevpn *vpn = es_evi->vpn; | |
3284 | ||
3285 | /* cannot free the element as long as there is a local or remote | |
3286 | * reference | |
3287 | */ | |
3288 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3289 | return es_evi; |
c44ab6f1 | 3290 | |
c589d847 AK |
3291 | bgp_evpn_es_vrf_deref(es_evi); |
3292 | ||
c44ab6f1 AK |
3293 | /* remove from the ES's VNI list */ |
3294 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3295 | ||
3296 | /* remove from the VNI-ESI rb tree */ | |
3297 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3298 | ||
3299 | /* free the VTEP list */ | |
3300 | list_delete(&es_evi->es_evi_vtep_list); | |
3301 | ||
3302 | /* remove from the VNI-ESI rb tree */ | |
3303 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3304 | |
3305 | return NULL; | |
c44ab6f1 AK |
3306 | } |
3307 | ||
3308 | /* init local info associated with the ES-EVI */ | |
3309 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3310 | { | |
3311 | struct bgpevpn *vpn = es_evi->vpn; | |
3312 | ||
3313 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3314 | return; | |
3315 | ||
3316 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3317 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3318 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3319 | } | |
3320 | ||
3321 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3322 | static struct bgp_evpn_es_evi * |
3323 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3324 | { |
3325 | struct bgpevpn *vpn = es_evi->vpn; | |
3326 | ||
c44ab6f1 AK |
3327 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); |
3328 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3329 | ||
333ad64b | 3330 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3331 | } |
3332 | ||
3333 | /* eval remote info associated with the ES */ | |
3334 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3335 | { | |
3336 | struct bgp_evpn_es *es = es_evi->es; | |
3337 | ||
3338 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3339 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3340 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3341 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3342 | ++es->remote_es_evi_cnt; | |
3343 | /* set remote on the parent es */ | |
3344 | bgp_evpn_es_remote_info_re_eval(es); | |
3345 | } | |
3346 | } else { | |
3347 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3348 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3349 | if (es->remote_es_evi_cnt) | |
3350 | --es->remote_es_evi_cnt; | |
3351 | bgp_evpn_es_evi_free(es_evi); | |
3352 | /* check if "remote" can be cleared from the | |
3353 | * parent es. | |
3354 | */ | |
3355 | bgp_evpn_es_remote_info_re_eval(es); | |
3356 | } | |
3357 | } | |
3358 | } | |
3359 | ||
333ad64b AK |
3360 | static struct bgp_evpn_es_evi * |
3361 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3362 | { |
3363 | struct prefix_evpn p; | |
3364 | struct bgp_evpn_es *es = es_evi->es; | |
3365 | struct bgp *bgp; | |
3366 | ||
3367 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3368 | return es_evi; |
c44ab6f1 AK |
3369 | |
3370 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3371 | zlog_debug("del local es %s evi %u", | |
3372 | es_evi->es->esi_str, | |
3373 | es_evi->vpn->vni); | |
3374 | ||
3375 | bgp = bgp_get_evpn(); | |
3376 | ||
3377 | if (bgp) { | |
3378 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3379 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3380 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3381 | &es->esi, es->originator_ip); | |
3382 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3383 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3384 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3385 | bgp->vrf_id, es->esi_str, | |
3386 | es_evi->vpn->vni); | |
3387 | } | |
3388 | ||
3389 | /* withdraw and delete EAD-EVI */ | |
3390 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3391 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3392 | &es->esi, es->originator_ip); | |
3393 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3394 | es, es_evi->vpn, &p)) | |
3395 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3396 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3397 | bgp->vrf_id, es->esi_str, | |
3398 | es_evi->vpn->vni); | |
3399 | } | |
3400 | } | |
3401 | ||
333ad64b | 3402 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3403 | } |
3404 | ||
3405 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3406 | { | |
3407 | struct bgpevpn *vpn; | |
3408 | struct bgp_evpn_es *es; | |
3409 | struct bgp_evpn_es_evi *es_evi; | |
3410 | char buf[ESI_STR_LEN]; | |
3411 | ||
3412 | es = bgp_evpn_es_find(esi); | |
3413 | if (!es) { | |
3414 | flog_err( | |
3415 | EC_BGP_ES_CREATE, | |
3416 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3417 | bgp->vrf_id, vni, | |
3418 | esi_to_str(esi, buf, sizeof(buf))); | |
3419 | return -1; | |
3420 | } | |
3421 | ||
3422 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3423 | if (!vpn) { | |
3424 | flog_err( | |
3425 | EC_BGP_ES_CREATE, | |
3426 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3427 | bgp->vrf_id, vni, es->esi_str); | |
3428 | return -1; | |
3429 | } | |
3430 | ||
3431 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3432 | if (!es_evi) { | |
3433 | flog_err( | |
3434 | EC_BGP_ES_CREATE, | |
3435 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3436 | bgp->vrf_id, vni, es->esi_str); | |
3437 | return -1; | |
3438 | } | |
3439 | ||
3440 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3441 | return 0; | |
3442 | } | |
3443 | ||
3444 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3445 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3446 | { | |
3447 | struct bgpevpn *vpn; | |
3448 | struct prefix_evpn p; | |
3449 | struct bgp_evpn_es *es; | |
3450 | struct bgp_evpn_es_evi *es_evi; | |
3451 | char buf[ESI_STR_LEN]; | |
3452 | ||
3453 | es = bgp_evpn_es_find(esi); | |
3454 | if (!es) { | |
3455 | flog_err( | |
3456 | EC_BGP_ES_CREATE, | |
3457 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3458 | bgp->vrf_id, vni, | |
3459 | esi_to_str(esi, buf, sizeof(buf))); | |
3460 | return -1; | |
3461 | } | |
3462 | ||
3463 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3464 | if (!vpn) { | |
3465 | flog_err( | |
3466 | EC_BGP_ES_CREATE, | |
3467 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3468 | bgp->vrf_id, vni, es->esi_str); | |
3469 | return -1; | |
3470 | } | |
3471 | ||
3472 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3473 | zlog_debug("add local es %s evi %u", | |
3474 | es->esi_str, vni); | |
3475 | ||
3476 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3477 | ||
3478 | if (es_evi) { | |
3479 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3480 | /* dup */ | |
3481 | return 0; | |
3482 | } else { | |
3483 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3484 | if (!es_evi) | |
3485 | return -1; | |
3486 | } | |
3487 | ||
3488 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3489 | ||
3490 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3491 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3492 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3493 | es->originator_ip); | |
c44ab6f1 AK |
3494 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3495 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3496 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3497 | bgp->vrf_id, es->esi_str, vni); | |
3498 | } | |
3499 | ||
3500 | /* update EAD-ES */ | |
3501 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3502 | &es->esi, es->originator_ip); | |
74be8313 | 3503 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3504 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3505 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3506 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3507 | bgp->vrf_id, es->esi_str, vni); | |
3508 | } | |
3509 | ||
3510 | return 0; | |
3511 | } | |
3512 | ||
3513 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3514 | * ES-EVI is implicity created on first VTEP's reference. | |
3515 | */ | |
3516 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3517 | const struct prefix_evpn *p) | |
3518 | { | |
3519 | char buf[ESI_STR_LEN]; | |
3520 | struct bgp_evpn_es *es; | |
3521 | struct bgp_evpn_es_evi *es_evi; | |
3522 | bool ead_es; | |
3523 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
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("add remote %s es %s evi %u vtep %pI4", |
3531 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3532 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3533 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3534 | |
3535 | es = bgp_evpn_es_find(esi); | |
3536 | if (!es) { | |
3537 | es = bgp_evpn_es_new(bgp, esi); | |
3538 | if (!es) { | |
3539 | flog_err(EC_BGP_ES_CREATE, | |
3540 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3541 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3542 | return -1; | |
3543 | } | |
3544 | } | |
3545 | ||
3546 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3547 | if (!es_evi) { | |
3548 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3549 | if (!es_evi) { | |
45a859f1 | 3550 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3551 | return -1; |
3552 | } | |
3553 | } | |
3554 | ||
3555 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3556 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3557 | ead_es); | |
3558 | ||
3559 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3560 | return 0; | |
3561 | } | |
3562 | ||
3563 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3564 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3565 | */ | |
3566 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3567 | const struct prefix_evpn *p) | |
3568 | { | |
3569 | char buf[ESI_STR_LEN]; | |
3570 | struct bgp_evpn_es *es; | |
3571 | struct bgp_evpn_es_evi *es_evi; | |
3572 | bool ead_es; | |
3573 | ||
3574 | if (!vpn) | |
3575 | /* local EAD-ES need not be sent back to zebra */ | |
3576 | return 0; | |
3577 | ||
3578 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3579 | zlog_debug( |
3580 | "del remote %s es %s evi %u vtep %pI4", | |
3581 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3582 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3583 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3584 | |
3585 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3586 | if (!es) { |
3587 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3588 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3589 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3590 | : "ead-evi", | |
3591 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3592 | sizeof(buf)), | |
3593 | vpn->vni, | |
3594 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3595 | return 0; |
2eef4f20 | 3596 | } |
c44ab6f1 | 3597 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3598 | if (!es_evi) { |
3599 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3600 | zlog_debug( | |
3601 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3602 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3603 | : "ead-evi", | |
3604 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3605 | sizeof(buf)), | |
3606 | vpn->vni, | |
3607 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3608 | return 0; |
2eef4f20 | 3609 | } |
c44ab6f1 AK |
3610 | |
3611 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3612 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3613 | ead_es); | |
3614 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3615 | return 0; | |
3616 | } | |
3617 | ||
333ad64b AK |
3618 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3619 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3620 | { | |
3621 | struct listnode *node = NULL; | |
3622 | struct listnode *nnode = NULL; | |
3623 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3624 | struct bgp *bgp; | |
3625 | ||
3626 | bgp = bgp_get_evpn(); | |
3627 | if (!bgp) | |
3628 | return; | |
3629 | ||
3630 | /* delete all VTEPs */ | |
3631 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3632 | evi_vtep)) { | |
3633 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3634 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3635 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3636 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3637 | } | |
3638 | /* delete the EVI */ | |
3639 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3640 | } | |
3641 | ||
c44ab6f1 AK |
3642 | /* Initialize the ES tables maintained per-L2_VNI */ |
3643 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3644 | { | |
3645 | /* Initialize the ES-EVI RB tree */ | |
3646 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3647 | ||
3648 | /* Initialize the local list maintained for quick walks by type */ | |
3649 | vpn->local_es_evi_list = list_new(); | |
3650 | listset_app_node_mem(vpn->local_es_evi_list); | |
3651 | } | |
3652 | ||
3653 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3654 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3655 | { | |
3656 | struct bgp_evpn_es_evi *es_evi; | |
3657 | struct bgp_evpn_es_evi *es_evi_next; | |
3658 | ||
3659 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3660 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3661 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3662 | if (es_evi) | |
3663 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3664 | } |
3665 | ||
3666 | list_delete(&vpn->local_es_evi_list); | |
3667 | } | |
3668 | ||
3669 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3670 | struct bgp_evpn_es_evi *es_evi, |
3671 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3672 | { |
3673 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3674 | struct listnode *node; | |
3675 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3676 | bool first = true; | |
ec779825 | 3677 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3678 | |
3679 | vtep_str[0] = '\0'; | |
3680 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3681 | vtep_flag_str[0] = '\0'; | |
3682 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3683 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3684 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3685 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3686 | |
9e0c2fd1 AK |
3687 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3688 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3689 | if (first) | |
c44ab6f1 | 3690 | first = false; |
9e0c2fd1 AK |
3691 | else |
3692 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3693 | strlcat(vtep_str, |
ec779825 AK |
3694 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3695 | sizeof(ip_buf)), | |
23d0a753 | 3696 | vtep_str_size); |
9e0c2fd1 AK |
3697 | strlcat(vtep_str, "(", vtep_str_size); |
3698 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3699 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3700 | } |
3701 | ||
3702 | return vtep_str; | |
3703 | } | |
3704 | ||
3705 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3706 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3707 | { | |
3708 | json_object *json_vtep_entry; | |
3709 | json_object *json_flags; | |
3710 | ||
3711 | json_vtep_entry = json_object_new_object(); | |
3712 | ||
c949c771 DA |
3713 | json_object_string_addf(json_vtep_entry, "vtep_ip", "%pI4", |
3714 | &evi_vtep->vtep_ip); | |
c44ab6f1 AK |
3715 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3716 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3717 | json_flags = json_object_new_array(); | |
3718 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3719 | json_array_string_add(json_flags, "ead-per-es"); | |
3720 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3721 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3722 | json_object_object_add(json_vtep_entry, |
3723 | "flags", json_flags); | |
3724 | } | |
3725 | ||
3726 | json_object_array_add(json_vteps, | |
3727 | json_vtep_entry); | |
3728 | } | |
3729 | ||
3730 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3731 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3732 | { | |
3733 | struct listnode *node; | |
3734 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3735 | ||
3736 | if (json) { | |
3737 | json_object *json_vteps; | |
3738 | json_object *json_types; | |
3739 | ||
3740 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3741 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3742 | ||
3743 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3744 | BGP_EVPNES_EVI_REMOTE)) { | |
3745 | json_types = json_object_new_array(); | |
3746 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3747 | json_array_string_add(json_types, "local"); | |
3748 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3749 | json_array_string_add(json_types, "remote"); | |
3750 | json_object_object_add(json, "type", json_types); | |
3751 | } | |
3752 | ||
3753 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3754 | json_vteps = json_object_new_array(); | |
3755 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3756 | node, evi_vtep)) { | |
3757 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3758 | evi_vtep); | |
3759 | } | |
3760 | json_object_object_add(json, "vteps", json_vteps); | |
3761 | } | |
3762 | } else { | |
3763 | char type_str[4]; | |
3764 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3765 | ||
3766 | type_str[0] = '\0'; | |
3767 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3768 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3769 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3770 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3771 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3772 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3773 | |
9e0c2fd1 | 3774 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3775 | |
3776 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3777 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3778 | type_str, vtep_str); | |
3779 | } | |
3780 | } | |
3781 | ||
3782 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3783 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3784 | { | |
3785 | if (json) { | |
3786 | json_object *json_flags; | |
3787 | ||
3788 | /* Add the "brief" info first */ | |
3789 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3790 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3791 | json_flags = json_object_new_array(); | |
3792 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3793 | json_object_object_add(json, "flags", json_flags); | |
3794 | } | |
3795 | } else { | |
3796 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3797 | char type_str[4]; | |
3798 | ||
3799 | type_str[0] = '\0'; | |
3800 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3801 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3802 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3803 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3804 | |
9e0c2fd1 | 3805 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3806 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3807 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3808 | |
3809 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3810 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3811 | vty_out(vty, " Type: %s\n", type_str); | |
3812 | vty_out(vty, " Inconsistencies: %s\n", | |
3813 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3814 | "es-vtep-mismatch":"-"); | |
3815 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3816 | vty_out(vty, "\n"); | |
3817 | } | |
3818 | } | |
3819 | ||
3820 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3821 | json_object *json_array, bool detail) | |
3822 | { | |
3823 | struct bgp_evpn_es_evi *es_evi; | |
3824 | json_object *json = NULL; | |
3825 | ||
3826 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3827 | if (json_array) | |
3828 | /* create a separate json object for each ES */ | |
3829 | json = json_object_new_object(); | |
3830 | if (detail) | |
3831 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3832 | else | |
3833 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3834 | /* add ES to the json array */ | |
3835 | if (json_array) | |
3836 | json_object_array_add(json_array, json); | |
3837 | } | |
3838 | } | |
3839 | ||
3840 | struct es_evi_show_ctx { | |
3841 | struct vty *vty; | |
3842 | json_object *json; | |
3843 | int detail; | |
3844 | }; | |
3845 | ||
3846 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3847 | void *ctxt) | |
3848 | { | |
3849 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3850 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3851 | ||
3852 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3853 | } | |
3854 | ||
3855 | /* Display all ES EVIs */ | |
3856 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3857 | { | |
3858 | json_object *json_array = NULL; | |
3859 | struct es_evi_show_ctx wctx; | |
3860 | struct bgp *bgp; | |
3861 | ||
3862 | if (uj) { | |
3863 | /* create an array of ES-EVIs */ | |
3864 | json_array = json_object_new_array(); | |
3865 | } | |
3866 | ||
3867 | wctx.vty = vty; | |
3868 | wctx.json = json_array; | |
3869 | wctx.detail = detail; | |
3870 | ||
3871 | bgp = bgp_get_evpn(); | |
3872 | ||
3873 | if (!json_array && !detail) { | |
3874 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3875 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3876 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3877 | "VNI", "ESI", "Flags", "VTEPs"); | |
3878 | } | |
3879 | ||
3880 | if (bgp) | |
3881 | hash_iterate(bgp->vnihash, | |
3882 | (void (*)(struct hash_bucket *, | |
3883 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3884 | &wctx); | |
c48349e3 | 3885 | if (uj) |
75eeda93 | 3886 | vty_json(vty, json_array); |
c44ab6f1 AK |
3887 | } |
3888 | ||
3889 | /* Display specific ES EVI */ | |
3890 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3891 | bool uj, bool detail) | |
3892 | { | |
3893 | struct bgpevpn *vpn = NULL; | |
3894 | json_object *json_array = NULL; | |
3895 | struct bgp *bgp; | |
3896 | ||
3897 | if (uj) { | |
3898 | /* create an array of ES-EVIs */ | |
3899 | json_array = json_object_new_array(); | |
3900 | } | |
3901 | ||
3902 | bgp = bgp_get_evpn(); | |
3903 | if (bgp) | |
3904 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3905 | ||
3906 | if (vpn) { | |
3907 | if (!json_array && !detail) { | |
3908 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3909 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3910 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3911 | "VNI", "ESI", "Flags", "VTEPs"); | |
3912 | } | |
3913 | ||
3914 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3915 | } else { | |
3916 | if (!uj) | |
3917 | vty_out(vty, "VNI not found\n"); | |
3918 | } | |
3919 | ||
c48349e3 | 3920 | if (uj) |
75eeda93 | 3921 | vty_json(vty, json_array); |
c44ab6f1 AK |
3922 | } |
3923 | ||
3924 | /***************************************************************************** | |
3925 | * Ethernet Segment Consistency checks | |
3926 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3927 | * an inconsistency is detected it is simply logged (and displayed via | |
3928 | * show commands) at this point. A more drastic action can be executed (based | |
3929 | * on user config) in the future. | |
3930 | */ | |
8fc2ffb3 AK |
3931 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3932 | { | |
3933 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3934 | return; | |
3935 | ||
3936 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3937 | zlog_debug("periodic consistency checking started"); | |
3938 | ||
3939 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3940 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3941 | &bgp_mh_info->t_cons_check); | |
3942 | } | |
3943 | ||
c44ab6f1 AK |
3944 | /* queue up the es for background consistency checks */ |
3945 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3946 | { | |
3947 | if (!bgp_mh_info->consistency_checking) | |
3948 | /* consistency checking is not enabled */ | |
3949 | return; | |
3950 | ||
3951 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3952 | /* already queued for consistency checking */ | |
3953 | return; | |
3954 | ||
8fc2ffb3 AK |
3955 | /* start the periodic timer for consistency checks if it is not |
3956 | * already running */ | |
3957 | bgp_evpn_es_cons_checks_timer_start(); | |
3958 | ||
c44ab6f1 AK |
3959 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3960 | listnode_init(&es->pend_es_listnode, es); | |
3961 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3962 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3963 | &es->pend_es_listnode); | |
3964 | } | |
3965 | ||
3966 | /* pull the ES from the consistency check list */ | |
3967 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3968 | { | |
3969 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3970 | return; | |
3971 | ||
3972 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3973 | list_delete_node(bgp_mh_info->pend_es_list, | |
3974 | &es->pend_es_listnode); | |
3975 | } | |
3976 | ||
3977 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3978 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3979 | struct bgp_evpn_es_evi *es_evi) | |
3980 | { | |
3981 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3982 | struct listnode *node; | |
3983 | uint32_t vtep_cnt = 0; | |
3984 | ||
3985 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3986 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3987 | ++vtep_cnt; | |
3988 | } | |
3989 | ||
3990 | return vtep_cnt; | |
3991 | } | |
3992 | ||
3993 | /* Number of active VTEPs associated with the ES */ | |
3994 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3995 | { | |
3996 | struct listnode *node; | |
3997 | uint32_t vtep_cnt = 0; | |
3998 | struct bgp_evpn_es_vtep *es_vtep; | |
3999 | ||
4000 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
4001 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4002 | ++vtep_cnt; | |
4003 | } | |
4004 | ||
4005 | return vtep_cnt; | |
4006 | } | |
4007 | ||
4008 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
4009 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
4010 | { | |
4011 | struct listnode *node; | |
4012 | struct bgp_evpn_es_vtep *next_es_vtep; | |
4013 | ||
4014 | if (es_vtep) | |
4015 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
4016 | else | |
4017 | node = listhead(es->es_vtep_list); | |
4018 | ||
4019 | for (; node; node = listnextnode_unchecked(node)) { | |
4020 | next_es_vtep = listgetdata(node); | |
4021 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4022 | return next_es_vtep; | |
4023 | } | |
4024 | ||
4025 | return NULL; | |
4026 | } | |
4027 | ||
4028 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
4029 | struct bgp_evpn_es_evi *es_evi, | |
4030 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
4031 | { | |
4032 | struct listnode *node; | |
4033 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
4034 | ||
4035 | if (evi_vtep) | |
4036 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
4037 | else | |
4038 | node = listhead(es_evi->es_evi_vtep_list); | |
4039 | ||
4040 | for (; node; node = listnextnode_unchecked(node)) { | |
4041 | next_evi_vtep = listgetdata(node); | |
4042 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4043 | return next_evi_vtep; | |
4044 | } | |
4045 | ||
4046 | return NULL; | |
4047 | } | |
4048 | ||
4049 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
4050 | { | |
4051 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
4052 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4053 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
4054 | es_evi->es->esi_str, | |
4055 | es_evi->vpn->vni); | |
4056 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4057 | ||
4058 | /* update parent ES with the incosistency setting */ | |
4059 | if (!es_evi->es->incons_evi_vtep_cnt && | |
4060 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4061 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
4062 | es_evi->es->esi_str); | |
4063 | ++es_evi->es->incons_evi_vtep_cnt; | |
4064 | SET_FLAG(es_evi->es->inconsistencies, | |
4065 | BGP_EVPNES_INCONS_VTEP_LIST); | |
4066 | } | |
4067 | } | |
4068 | ||
4069 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
4070 | { | |
4071 | int proc_cnt = 0; | |
4072 | int es_active_vtep_cnt; | |
4073 | int evi_active_vtep_cnt; | |
4074 | struct bgp_evpn_es_evi *es_evi; | |
4075 | struct listnode *evi_node; | |
4076 | struct bgp_evpn_es_vtep *es_vtep; | |
4077 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4078 | ||
4079 | /* reset the inconsistencies and re-evaluate */ | |
4080 | es->incons_evi_vtep_cnt = 0; | |
4081 | es->inconsistencies = 0; | |
4082 | ||
4083 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
4084 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
4085 | evi_node, es_evi)) { | |
4086 | ++proc_cnt; | |
4087 | ||
4088 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
4089 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4090 | ||
4091 | evi_active_vtep_cnt = | |
4092 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
4093 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
4094 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4095 | continue; | |
4096 | } | |
4097 | ||
4098 | if (!es_active_vtep_cnt) | |
4099 | continue; | |
4100 | ||
4101 | es_vtep = NULL; | |
4102 | evi_vtep = NULL; | |
4103 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
4104 | es, es_vtep))) { | |
4105 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
4106 | evi_vtep); | |
4107 | if (!evi_vtep) { | |
4108 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4109 | break; | |
4110 | } | |
4111 | if (es_vtep->vtep_ip.s_addr != | |
4112 | evi_vtep->vtep_ip.s_addr) { | |
4113 | /* inconsistency detected; set it and move | |
4114 | * to the next evi | |
4115 | */ | |
4116 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4117 | break; | |
4118 | } | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | return proc_cnt; | |
4123 | } | |
4124 | ||
cc9f21da | 4125 | static void bgp_evpn_run_consistency_checks(struct thread *t) |
c44ab6f1 AK |
4126 | { |
4127 | int proc_cnt = 0; | |
4128 | int es_cnt = 0; | |
4129 | struct listnode *node; | |
4130 | struct listnode *nextnode; | |
4131 | struct bgp_evpn_es *es; | |
4132 | ||
4133 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
4134 | node, nextnode, es)) { | |
4135 | ++es_cnt; | |
4136 | ++proc_cnt; | |
4137 | /* run consistency checks on the ES and remove it from the | |
4138 | * pending list | |
4139 | */ | |
4140 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4141 | bgp_evpn_es_cons_checks_pend_del(es); | |
4142 | if (proc_cnt > 500) | |
4143 | break; | |
4144 | } | |
4145 | ||
4146 | /* restart the timer */ | |
4147 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4148 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4149 | &bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4150 | } |
4151 | ||
090efa2f AK |
4152 | /***************************************************************************** |
4153 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4154 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4155 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4156 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4157 | * | |
4158 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4159 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4160 | * RMAC info). | |
4161 | ****************************************************************************/ | |
4162 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4163 | { | |
4164 | struct stream *s; | |
4165 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4166 | ||
4167 | /* Check socket. */ | |
4168 | if (!zclient || zclient->sock < 0) | |
4169 | return; | |
4170 | ||
4171 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4172 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4173 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4174 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4175 | add ? "adding" : "deleting", nh->nh_str); | |
4176 | return; | |
4177 | } | |
4178 | ||
4179 | s = zclient->obuf; | |
4180 | stream_reset(s); | |
4181 | ||
4182 | zclient_create_header( | |
4183 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4184 | bgp_vrf->vrf_id); | |
4185 | stream_putl(s, bgp_vrf->vrf_id); | |
4186 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4187 | if (add) | |
4188 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4189 | ||
4190 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4191 | ||
4192 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4193 | if (add) | |
4194 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
4195 | nh->bgp_vrf->name, nh->nh_str, &nh->rmac); | |
4196 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4197 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
4198 | nh->bgp_vrf->name, nh->nh_str); | |
4199 | } | |
4200 | ||
23aa35ad AK |
4201 | frrtrace(2, frr_bgp, evpn_mh_nh_rmac_zsend, add, nh); |
4202 | ||
090efa2f AK |
4203 | zclient_send_message(zclient); |
4204 | } | |
4205 | ||
4206 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4207 | { | |
4208 | if (add && !is_zero_mac(&nh->rmac)) { | |
4209 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4210 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4211 | } else { | |
4212 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4213 | return; | |
4214 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4215 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4216 | } | |
4217 | } | |
4218 | ||
4219 | static void *bgp_evpn_nh_alloc(void *p) | |
4220 | { | |
4221 | struct bgp_evpn_nh *tmp_n = p; | |
4222 | struct bgp_evpn_nh *n; | |
4223 | ||
4224 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4225 | *n = *tmp_n; | |
4226 | ||
4227 | return ((void *)n); | |
4228 | } | |
4229 | ||
4230 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4231 | struct ipaddr *ip) | |
4232 | { | |
4233 | struct bgp_evpn_nh tmp; | |
4234 | struct bgp_evpn_nh *n; | |
4235 | ||
4236 | memset(&tmp, 0, sizeof(tmp)); | |
4237 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4238 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4239 | ||
4240 | return n; | |
4241 | } | |
4242 | ||
4243 | /* Add nexthop entry - implicitly created on first path reference */ | |
4244 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4245 | struct ipaddr *ip, | |
4246 | struct bgp_path_info *pi) | |
4247 | { | |
4248 | struct bgp_evpn_nh tmp_n; | |
4249 | struct bgp_evpn_nh *n = NULL; | |
4250 | ||
4251 | memset(&tmp_n, 0, sizeof(struct bgp_evpn_nh)); | |
4252 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
4253 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4254 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4255 | n->bgp_vrf = bgp_vrf; | |
4256 | ||
4257 | n->pi_list = list_new(); | |
4258 | listset_app_node_mem(n->pi_list); | |
4259 | ||
4260 | /* Setup ref_pi when the nh is created */ | |
4261 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4262 | n->ref_pi = pi; | |
4263 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4264 | } | |
4265 | ||
4266 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4267 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", n->bgp_vrf->name, | |
4268 | n->nh_str, &n->rmac); | |
4269 | bgp_evpn_nh_zebra_update(n, true); | |
4270 | return n; | |
4271 | } | |
4272 | ||
4273 | /* Delete nexthop entry if there are no paths referencing it */ | |
4274 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4275 | { | |
4276 | struct bgp_evpn_nh *tmp_n; | |
4277 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4278 | ||
4279 | if (listcount(n->pi_list)) | |
4280 | return; | |
4281 | ||
4282 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4283 | zlog_debug("evpn vrf %s nh %s del to zebra", bgp_vrf->name, | |
4284 | n->nh_str); | |
4285 | ||
4286 | bgp_evpn_nh_zebra_update(n, false); | |
4287 | list_delete(&n->pi_list); | |
4288 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4289 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4290 | } | |
4291 | ||
4292 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) | |
4293 | { | |
4294 | const struct bgp_evpn_nh *n = p; | |
4295 | const struct ipaddr *ip = &n->ip; | |
4296 | ||
4297 | if (IS_IPADDR_V4(ip)) | |
4298 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4299 | ||
4300 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4301 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4302 | } | |
4303 | ||
4304 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4305 | { | |
4306 | const struct bgp_evpn_nh *n1 = p1; | |
4307 | const struct bgp_evpn_nh *n2 = p2; | |
4308 | ||
4309 | if (n1 == NULL && n2 == NULL) | |
4310 | return true; | |
4311 | ||
4312 | if (n1 == NULL || n2 == NULL) | |
4313 | return false; | |
4314 | ||
60cda04d | 4315 | return (ipaddr_cmp(&n1->ip, &n2->ip) == 0); |
090efa2f AK |
4316 | } |
4317 | ||
4318 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4319 | { | |
4320 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4321 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name); | |
4322 | bgp_vrf->evpn_nh_table = hash_create( | |
4323 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4324 | } | |
4325 | ||
4326 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4327 | { | |
4328 | struct listnode *node; | |
4329 | struct listnode *nnode; | |
4330 | struct bgp_path_evpn_nh_info *nh_info; | |
4331 | ||
4332 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4333 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name, | |
4334 | nh->nh_str); | |
4335 | ||
4336 | /* force flush paths */ | |
4337 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4338 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4339 | } | |
4340 | ||
4341 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4342 | { | |
4343 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4344 | ||
4345 | bgp_evpn_nh_flush_entry(nh); | |
4346 | } | |
4347 | ||
4348 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4349 | { | |
4350 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4351 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name); | |
4352 | hash_iterate( | |
4353 | bgp_vrf->evpn_nh_table, | |
4354 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4355 | NULL); | |
4356 | hash_free(bgp_vrf->evpn_nh_table); | |
4357 | bgp_vrf->evpn_nh_table = NULL; | |
4358 | } | |
4359 | ||
4360 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4361 | { | |
4362 | struct listnode *node; | |
4363 | struct bgp_path_info *pi; | |
4364 | struct bgp_path_evpn_nh_info *nh_info; | |
4365 | ||
4366 | if (nh->ref_pi) | |
4367 | return; | |
4368 | ||
4369 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4370 | pi = nh_info->pi; | |
4371 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4372 | continue; | |
4373 | ||
4374 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4375 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
4376 | nh->bgp_vrf->name, nh->nh_str); | |
4377 | nh->ref_pi = pi; | |
4378 | /* If we have a new pi copy rmac from it and update | |
4379 | * zebra if the new rmac is different | |
4380 | */ | |
4381 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4382 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4383 | bgp_evpn_nh_zebra_update(nh, true); | |
4384 | } | |
4385 | break; | |
4386 | } | |
4387 | } | |
4388 | ||
4389 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4390 | struct bgp_path_info *pi) | |
4391 | { | |
4392 | if (nh->ref_pi != pi) | |
4393 | return; | |
4394 | ||
4395 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4396 | zlog_debug("evpn vrf %s nh %s ref_pi clear", nh->bgp_vrf->name, | |
4397 | nh->nh_str); | |
4398 | nh->ref_pi = NULL; | |
4399 | /* try to find another ref_pi */ | |
4400 | bgp_evpn_nh_update_ref_pi(nh); | |
4401 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4402 | if (!nh->ref_pi) { | |
4403 | memset(&nh->rmac, 0, ETH_ALEN); | |
4404 | bgp_evpn_nh_zebra_update(nh, true); | |
4405 | } | |
4406 | } | |
4407 | ||
4408 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4409 | { | |
4410 | bgp_evpn_path_nh_unlink(nh_info); | |
4411 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4412 | } | |
4413 | ||
4414 | static struct bgp_path_evpn_nh_info * | |
4415 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4416 | { | |
4417 | struct bgp_path_info_extra *e; | |
4418 | struct bgp_path_mh_info *mh_info; | |
4419 | struct bgp_path_evpn_nh_info *nh_info; | |
4420 | ||
4421 | e = bgp_path_info_extra_get(pi); | |
4422 | ||
4423 | /* If mh_info doesn't exist allocate it */ | |
4424 | mh_info = e->mh_info; | |
4425 | if (!mh_info) | |
4426 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4427 | sizeof(struct bgp_path_mh_info)); | |
4428 | ||
4429 | /* If nh_info doesn't exist allocate it */ | |
4430 | nh_info = mh_info->nh_info; | |
4431 | if (!nh_info) { | |
4432 | mh_info->nh_info = nh_info = | |
4433 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4434 | sizeof(struct bgp_path_evpn_nh_info)); | |
4435 | nh_info->pi = pi; | |
4436 | } | |
4437 | ||
4438 | return nh_info; | |
4439 | } | |
4440 | ||
4441 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4442 | { | |
4443 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4444 | struct bgp_path_info *pi; | |
4445 | char prefix_buf[PREFIX_STRLEN]; | |
4446 | ||
4447 | if (!nh) | |
4448 | return; | |
4449 | ||
4450 | pi = nh_info->pi; | |
4451 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4452 | zlog_debug("path %s unlinked from nh %s %s", | |
4453 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4454 | sizeof(prefix_buf)) | |
4455 | : "", | |
4456 | nh->bgp_vrf->name, nh->nh_str); | |
4457 | ||
4458 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4459 | ||
4460 | nh_info->nh = NULL; | |
4461 | ||
4462 | /* check if the ref_pi need to be updated */ | |
4463 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4464 | ||
4465 | /* if there are no other references against the nh it | |
4466 | * needs to be freed | |
4467 | */ | |
4468 | bgp_evpn_nh_del(nh); | |
4469 | ||
4470 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4471 | * along with the path. | |
4472 | */ | |
4473 | } | |
4474 | ||
4475 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4476 | { | |
4477 | struct bgp_path_evpn_nh_info *nh_info; | |
4478 | struct bgp_evpn_nh *nh; | |
090efa2f AK |
4479 | struct ipaddr ip; |
4480 | ||
4481 | /* EVPN nexthop setup in bgp has been turned off */ | |
4482 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4483 | return; | |
4484 | ||
4485 | if (!bgp_vrf->evpn_nh_table) { | |
4486 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4487 | zlog_debug("path %pFX linked to vrf %s failed", |
4488 | &pi->net->p, bgp_vrf->name); | |
090efa2f AK |
4489 | return; |
4490 | } | |
4491 | ||
4492 | nh_info = (pi->extra && pi->extra->mh_info) | |
4493 | ? pi->extra->mh_info->nh_info | |
4494 | : NULL; | |
4495 | ||
4496 | /* if NHG is not being used for this path we don't need to manage the | |
4497 | * nexthops in bgp (they are managed by zebra instead) | |
4498 | */ | |
4499 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4500 | if (nh_info) | |
4501 | bgp_evpn_path_nh_unlink(nh_info); | |
4502 | return; | |
4503 | } | |
4504 | ||
4505 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4506 | if (!nh_info) | |
4507 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4508 | ||
4509 | /* find-create nh */ | |
4510 | memset(&ip, 0, sizeof(ip)); | |
4511 | if (pi->net->p.family == AF_INET6) { | |
4512 | SET_IPADDR_V6(&ip); | |
4513 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4514 | sizeof(ip.ipaddr_v6)); | |
4515 | } else { | |
4516 | SET_IPADDR_V4(&ip); | |
4517 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4518 | } | |
4519 | ||
4520 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4521 | if (!nh) | |
4522 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4523 | ||
4524 | /* dup check */ | |
4525 | if (nh_info->nh == nh) { | |
4526 | /* Check if any of the paths are now valid */ | |
4527 | bgp_evpn_nh_update_ref_pi(nh); | |
4528 | return; | |
4529 | } | |
4530 | ||
4531 | /* unlink old nh if any */ | |
4532 | bgp_evpn_path_nh_unlink(nh_info); | |
4533 | ||
4534 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4535 | zlog_debug("path %pFX linked to nh %s %s", &pi->net->p, |
4536 | nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4537 | |
4538 | /* link mac-ip path to the new nh */ | |
4539 | nh_info->nh = nh; | |
4540 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4541 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4542 | /* If a new valid path got linked to the nh see if can get the rmac | |
4543 | * from it | |
4544 | */ | |
4545 | bgp_evpn_nh_update_ref_pi(nh); | |
4546 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4547 | if (!nh->ref_pi) | |
4548 | zlog_debug( | |
70545a29 AK |
4549 | "path %pFX linked to nh %s %s with no valid pi", |
4550 | &pi->net->p, nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4551 | } |
4552 | } | |
4553 | ||
4554 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4555 | { | |
4556 | struct bgp_path_evpn_nh_info *nh_info; | |
4557 | ||
4558 | nh_info = (pi->extra && pi->extra->mh_info) | |
4559 | ? pi->extra->mh_info->nh_info | |
4560 | : NULL; | |
4561 | ||
4562 | if (!nh_info) | |
4563 | return; | |
4564 | ||
4565 | bgp_evpn_path_nh_unlink(nh_info); | |
4566 | } | |
4567 | ||
4568 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4569 | { | |
4570 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4571 | } | |
4572 | ||
4573 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4574 | json_object *json_array) | |
4575 | { | |
4576 | json_object *json = NULL; | |
4577 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4578 | char prefix_buf[PREFIX_STRLEN]; | |
4579 | ||
4580 | if (json_array) | |
4581 | /* create a separate json object for each ES */ | |
4582 | json = json_object_new_object(); | |
4583 | ||
4584 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4585 | if (nh->ref_pi && nh->ref_pi->net) | |
4586 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4587 | else | |
4588 | prefix_buf[0] = '\0'; | |
4589 | if (json) { | |
4590 | json_object_string_add(json, "vrf", nh->bgp_vrf->name); | |
4591 | json_object_string_add(json, "ip", nh->nh_str); | |
4592 | json_object_string_add(json, "rmac", mac_buf); | |
4593 | json_object_string_add(json, "basePath", prefix_buf); | |
4594 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4595 | } else { | |
4596 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", nh->bgp_vrf->name, | |
4597 | nh->nh_str, mac_buf, listcount(nh->pi_list), | |
4598 | prefix_buf); | |
4599 | } | |
4600 | ||
4601 | /* add ES to the json array */ | |
4602 | if (json_array) | |
4603 | json_object_array_add(json_array, json); | |
4604 | } | |
4605 | ||
4606 | struct nh_show_ctx { | |
4607 | struct vty *vty; | |
4608 | json_object *json; | |
4609 | }; | |
4610 | ||
4611 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4612 | { | |
4613 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4614 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4615 | ||
4616 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4617 | } | |
4618 | ||
4619 | /* Display all evpn nexthops */ | |
4620 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4621 | { | |
4622 | json_object *json_array = NULL; | |
4623 | struct bgp *bgp_vrf; | |
4624 | struct listnode *node; | |
4625 | struct nh_show_ctx wctx; | |
4626 | ||
4627 | if (uj) { | |
4628 | /* create an array of nexthops */ | |
4629 | json_array = json_object_new_array(); | |
4630 | } else { | |
4631 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4632 | "RMAC", "#Paths", "Base Path"); | |
4633 | } | |
4634 | ||
4635 | wctx.vty = vty; | |
4636 | wctx.json = json_array; | |
4637 | ||
4638 | /* walk through all vrfs */ | |
4639 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4640 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4641 | (void (*)(struct hash_bucket *, | |
4642 | void *))bgp_evpn_nh_show_hash_cb, | |
4643 | &wctx); | |
4644 | } | |
4645 | ||
4646 | /* print the array of json-ESs */ | |
c48349e3 | 4647 | if (uj) |
75eeda93 | 4648 | vty_json(vty, json_array); |
090efa2f AK |
4649 | } |
4650 | ||
c44ab6f1 AK |
4651 | /*****************************************************************************/ |
4652 | void bgp_evpn_mh_init(void) | |
4653 | { | |
4654 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4655 | ||
4656 | /* setup ES tables */ | |
4657 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4658 | /* local ES list */ | |
4659 | bgp_mh_info->local_es_list = list_new(); | |
4660 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4661 | /* list of ESs with pending processing */ | |
4662 | bgp_mh_info->pend_es_list = list_new(); | |
4663 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4664 | ||
fe8293c3 AK |
4665 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4666 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
4667 | ||
c44ab6f1 AK |
4668 | /* config knobs - XXX add cli to control it */ |
4669 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4670 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
4671 | bgp_mh_info->install_l3nhg = false; |
4672 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 4673 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4674 | bgp_mh_info->bgp_evpn_nh_setup = true; |
c44ab6f1 | 4675 | |
c44ab6f1 AK |
4676 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4677 | } | |
4678 | ||
4679 | void bgp_evpn_mh_finish(void) | |
4680 | { | |
4681 | struct bgp_evpn_es *es; | |
4682 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4683 | |
45a859f1 AK |
4684 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4685 | zlog_debug("evpn mh finish"); | |
4686 | ||
4687 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4688 | es_next) { | |
d57e0c05 | 4689 | bgp_evpn_es_local_info_clear(es, true); |
c44ab6f1 | 4690 | } |
8fc2ffb3 AK |
4691 | if (bgp_mh_info->t_cons_check) |
4692 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4693 | list_delete(&bgp_mh_info->local_es_list); |
4694 | list_delete(&bgp_mh_info->pend_es_list); | |
4695 | ||
4696 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4697 | } | |
acd1d9bc AD |
4698 | |
4699 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4700 | void bgp_evpn_switch_ead_evi_rx(void) | |
4701 | { | |
4702 | struct bgp *bgp; | |
4703 | struct bgp_evpn_es *es; | |
4704 | struct bgp_evpn_es_evi *es_evi; | |
4705 | struct listnode *evi_node = NULL; | |
4706 | struct listnode *evi_next = NULL; | |
4707 | struct bgp_evpn_es_evi_vtep *vtep; | |
4708 | struct listnode *vtep_node = NULL; | |
4709 | struct listnode *vtep_next = NULL; | |
4710 | ||
4711 | bgp = bgp_get_evpn(); | |
4712 | if (!bgp) | |
4713 | return; | |
4714 | ||
4715 | /* | |
4716 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4717 | * is active. | |
4718 | */ | |
4719 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4720 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4721 | continue; | |
4722 | ||
4723 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4724 | es_evi)) { | |
4725 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4726 | continue; | |
4727 | ||
4728 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4729 | vtep_node, vtep_next, vtep)) | |
4730 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4731 | } | |
4732 | } | |
4733 | } |