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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; | |
8fc2ffb3 | 79 | static int 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 AK |
600 | ecom_encap.val = (uint8_t *)eval.val; |
601 | attr->ecommunity = 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 AK |
610 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
611 | attr->ecommunity = | |
612 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 613 | |
74e2bd89 AK |
614 | /* DF election extended community */ |
615 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
616 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
617 | ecom_df.size = 1; | |
618 | ecom_df.val = (uint8_t *)eval_df.val; | |
619 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
620 | ||
c44ab6f1 | 621 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
622 | } |
623 | ||
c44ab6f1 AK |
624 | /* Create or update local type-4 route */ |
625 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
626 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
627 | { |
628 | int ret = 0; | |
c44ab6f1 AK |
629 | int route_changed = 0; |
630 | afi_t afi = AFI_L2VPN; | |
631 | safi_t safi = SAFI_EVPN; | |
632 | struct attr attr; | |
633 | struct attr *attr_new = NULL; | |
09319b4e | 634 | struct bgp_dest *dest = NULL; |
185fb14a | 635 | struct bgp_path_info *pi = NULL; |
185fb14a | 636 | |
c44ab6f1 AK |
637 | memset(&attr, 0, sizeof(struct attr)); |
638 | ||
639 | /* Build path-attribute for this route. */ | |
640 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
641 | attr.nexthop = es->originator_ip; | |
642 | attr.mp_nexthop_global_in = es->originator_ip; | |
643 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
644 | ||
645 | /* Set up extended community. */ | |
646 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
647 | ||
648 | /* First, create (or fetch) route node within the ESI. */ | |
649 | /* NOTE: There is no RD here. */ | |
09319b4e | 650 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 651 | |
c44ab6f1 | 652 | /* Create or update route entry. */ |
09319b4e DS |
653 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
654 | &pi, &route_changed); | |
ec779825 | 655 | if (ret != 0) |
23d0a753 DA |
656 | flog_err( |
657 | EC_BGP_ES_INVALID, | |
658 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
659 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 660 | |
c44ab6f1 AK |
661 | assert(pi); |
662 | attr_new = pi->attr; | |
185fb14a | 663 | |
c44ab6f1 AK |
664 | /* Perform route selection; |
665 | * this is just to set the flags correctly | |
666 | * as local route in the ES always wins. | |
667 | */ | |
09319b4e DS |
668 | bgp_evpn_es_route_select_install(bgp, es, dest); |
669 | bgp_dest_unlock_node(dest); | |
185fb14a | 670 | |
c44ab6f1 AK |
671 | /* If this is a new route or some attribute has changed, export the |
672 | * route to the global table. The route will be advertised to peers | |
673 | * from there. Note that this table is a 2-level tree (RD-level + | |
674 | * Prefix-level) similar to L3VPN routes. | |
675 | */ | |
676 | if (route_changed) { | |
677 | struct bgp_path_info *global_pi; | |
185fb14a | 678 | |
09319b4e DS |
679 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
680 | p, &es->prd); | |
681 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
682 | attr_new, 1, &global_pi, | |
683 | &route_changed); | |
185fb14a | 684 | |
c44ab6f1 | 685 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
686 | bgp_process(bgp, dest, afi, safi); |
687 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
688 | } |
689 | ||
c44ab6f1 AK |
690 | /* Unintern temporary. */ |
691 | aspath_unintern(&attr.aspath); | |
692 | return 0; | |
185fb14a AK |
693 | } |
694 | ||
c44ab6f1 AK |
695 | /* Delete local type-4 route */ |
696 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
697 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 698 | { |
c44ab6f1 AK |
699 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
700 | } | |
185fb14a | 701 | |
c44ab6f1 AK |
702 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
703 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
704 | struct attr *attr, uint8_t *pfx, int psize, | |
705 | uint32_t addpath_id) | |
706 | { | |
707 | int ret; | |
708 | esi_t esi; | |
709 | uint8_t ipaddr_len; | |
710 | struct in_addr vtep_ip; | |
711 | struct prefix_rd prd; | |
712 | struct prefix_evpn p; | |
185fb14a | 713 | |
c44ab6f1 AK |
714 | /* Type-4 route should be either 23 or 35 bytes |
715 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 716 | */ |
c44ab6f1 AK |
717 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
718 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
719 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
720 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
721 | peer->bgp->vrf_id, peer->host, psize); | |
722 | return -1; | |
723 | } | |
185fb14a | 724 | |
c44ab6f1 AK |
725 | /* Make prefix_rd */ |
726 | prd.family = AF_UNSPEC; | |
727 | prd.prefixlen = 64; | |
728 | memcpy(&prd.val, pfx, RD_BYTES); | |
729 | pfx += RD_BYTES; | |
185fb14a | 730 | |
c44ab6f1 AK |
731 | /* get the ESI */ |
732 | memcpy(&esi, pfx, ESI_BYTES); | |
733 | pfx += ESI_BYTES; | |
185fb14a | 734 | |
185fb14a | 735 | |
c44ab6f1 AK |
736 | /* Get the IP. */ |
737 | ipaddr_len = *pfx++; | |
738 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
739 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
740 | } else { | |
741 | flog_err( | |
742 | EC_BGP_EVPN_ROUTE_INVALID, | |
743 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
744 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
745 | return -1; | |
746 | } | |
185fb14a | 747 | |
c44ab6f1 AK |
748 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
749 | /* Process the route. */ | |
750 | if (attr) { | |
751 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
752 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
753 | &prd, NULL, 0, 0, NULL); | |
754 | } else { | |
755 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
756 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
757 | &prd, NULL, 0, NULL); | |
758 | } | |
185fb14a AK |
759 | return ret; |
760 | } | |
761 | ||
c44ab6f1 AK |
762 | /* Check if a prefix belongs to the local ES */ |
763 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
764 | struct bgp_evpn_es *es) | |
185fb14a | 765 | { |
c44ab6f1 AK |
766 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
767 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
768 | } |
769 | ||
c44ab6f1 AK |
770 | /* Import remote ESRs on local ethernet segment add */ |
771 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
772 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
773 | { |
774 | int ret; | |
775 | afi_t afi; | |
776 | safi_t safi; | |
09319b4e | 777 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
778 | struct bgp_table *table; |
779 | struct bgp_path_info *pi; | |
780 | ||
781 | afi = AFI_L2VPN; | |
782 | safi = SAFI_EVPN; | |
783 | ||
c44ab6f1 AK |
784 | /* Walk entire global routing table and evaluate routes which could be |
785 | * imported into this Ethernet Segment. | |
185fb14a | 786 | */ |
09319b4e DS |
787 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
788 | rd_dest = bgp_route_next(rd_dest)) { | |
789 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
790 | if (!table) |
791 | continue; | |
792 | ||
09319b4e DS |
793 | for (dest = bgp_table_top(table); dest; |
794 | dest = bgp_route_next(dest)) { | |
795 | struct prefix_evpn *evp = | |
752eed47 | 796 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 797 | |
09319b4e DS |
798 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
799 | pi = pi->next) { | |
185fb14a AK |
800 | /* |
801 | * Consider "valid" remote routes applicable for | |
802 | * this ES. | |
803 | */ | |
804 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
805 | && pi->type == ZEBRA_ROUTE_BGP |
806 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
807 | continue; |
808 | ||
c44ab6f1 | 809 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
810 | continue; |
811 | ||
812 | if (install) | |
c44ab6f1 AK |
813 | ret = bgp_evpn_es_route_install( |
814 | bgp, es, evp, pi); | |
185fb14a | 815 | else |
c44ab6f1 AK |
816 | ret = bgp_evpn_es_route_uninstall( |
817 | bgp, es, evp, pi); | |
185fb14a AK |
818 | |
819 | if (ret) { | |
820 | flog_err( | |
2dbe669b DA |
821 | EC_BGP_EVPN_FAIL, |
822 | "Failed to %s EVPN %pFX route in ESI %s", | |
823 | install ? "install" | |
185fb14a | 824 | : "uninstall", |
2dbe669b | 825 | evp, es->esi_str); |
dc52bece DS |
826 | |
827 | bgp_dest_unlock_node(rd_dest); | |
828 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
829 | return ret; |
830 | } | |
831 | } | |
832 | } | |
833 | } | |
834 | return 0; | |
835 | } | |
836 | ||
c44ab6f1 AK |
837 | /***************************************************************************** |
838 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
839 | * There are two types of EAD routes - | |
840 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
841 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 842 | */ |
185fb14a | 843 | |
c44ab6f1 AK |
844 | /* Extended communities associated with EAD-per-ES */ |
845 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
846 | struct attr *attr) | |
185fb14a | 847 | { |
c44ab6f1 AK |
848 | struct ecommunity ecom_encap; |
849 | struct ecommunity ecom_esi_label; | |
850 | struct ecommunity_val eval; | |
851 | struct ecommunity_val eval_esi_label; | |
852 | bgp_encap_types tnl_type; | |
853 | struct listnode *evi_node, *rt_node; | |
854 | struct ecommunity *ecom; | |
855 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 856 | |
c44ab6f1 AK |
857 | /* Encap */ |
858 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
859 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
860 | encode_encap_extcomm(tnl_type, &eval); | |
861 | ecom_encap.size = 1; | |
34540b0d | 862 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
863 | ecom_encap.val = (uint8_t *)eval.val; |
864 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 865 | |
c44ab6f1 AK |
866 | /* ESI label */ |
867 | encode_esi_label_extcomm(&eval_esi_label, | |
868 | false /*single_active*/); | |
869 | ecom_esi_label.size = 1; | |
34540b0d | 870 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
871 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
872 | attr->ecommunity = | |
873 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
874 | ||
875 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
876 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
877 | * with it. | |
878 | */ | |
879 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
880 | evi_node, es_evi)) { | |
881 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
882 | continue; | |
883 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
884 | rt_node, ecom)) | |
885 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
886 | ecom); | |
887 | } | |
888 | ||
889 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
890 | } | |
891 | ||
892 | /* Extended communities associated with EAD-per-EVI */ | |
893 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
894 | struct bgpevpn *vpn, struct attr *attr) | |
895 | { | |
896 | struct ecommunity ecom_encap; | |
897 | struct ecommunity_val eval; | |
898 | bgp_encap_types tnl_type; | |
899 | struct listnode *rt_node; | |
900 | struct ecommunity *ecom; | |
901 | ||
902 | /* Encap */ | |
903 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
904 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
905 | encode_encap_extcomm(tnl_type, &eval); | |
906 | ecom_encap.size = 1; | |
7659ad68 | 907 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
908 | ecom_encap.val = (uint8_t *)eval.val; |
909 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
910 | ||
911 | /* Add export RTs for the L2-VNI */ | |
912 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
913 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
914 | ||
915 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
916 | } | |
917 | ||
918 | /* Update EVPN EAD (type-1) route - | |
919 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
920 | */ | |
921 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
922 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
923 | struct prefix_evpn *p) | |
924 | { | |
925 | int ret = 0; | |
926 | afi_t afi = AFI_L2VPN; | |
927 | safi_t safi = SAFI_EVPN; | |
928 | struct attr attr; | |
929 | struct attr *attr_new = NULL; | |
09319b4e | 930 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
931 | struct bgp_path_info *pi = NULL; |
932 | int route_changed = 0; | |
933 | struct prefix_rd *global_rd; | |
934 | ||
935 | memset(&attr, 0, sizeof(struct attr)); | |
936 | ||
937 | /* Build path-attribute for this route. */ | |
938 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
939 | attr.nexthop = es->originator_ip; | |
940 | attr.mp_nexthop_global_in = es->originator_ip; | |
941 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
942 | ||
943 | if (vpn) { | |
944 | /* EAD-EVI route update */ | |
945 | /* MPLS label */ | |
946 | vni2label(vpn->vni, &(attr.label)); | |
947 | ||
948 | /* Set up extended community */ | |
949 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
950 | ||
951 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 952 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
953 | |
954 | /* Create or update route entry. */ | |
09319b4e DS |
955 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
956 | &attr, 1, &pi, &route_changed); | |
ec779825 | 957 | if (ret != 0) |
23d0a753 DA |
958 | flog_err( |
959 | EC_BGP_ES_INVALID, | |
960 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
961 | bgp->vrf_id, es->esi_str, vpn->vni, | |
962 | &es->originator_ip); | |
c44ab6f1 AK |
963 | global_rd = &vpn->prd; |
964 | } else { | |
965 | /* EAD-ES route update */ | |
966 | /* MPLS label is 0 for EAD-ES route */ | |
967 | ||
968 | /* Set up extended community */ | |
969 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
970 | ||
971 | /* First, create (or fetch) route node within the ES. */ | |
972 | /* NOTE: There is no RD here. */ | |
973 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 974 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
975 | |
976 | /* Create or update route entry. */ | |
09319b4e DS |
977 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
978 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 979 | if (ret != 0) { |
23d0a753 DA |
980 | flog_err( |
981 | EC_BGP_ES_INVALID, | |
982 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
983 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
984 | } |
985 | global_rd = &es->prd; | |
986 | } | |
987 | ||
988 | ||
989 | assert(pi); | |
990 | attr_new = pi->attr; | |
991 | ||
992 | /* Perform route selection; | |
993 | * this is just to set the flags correctly as local route in | |
994 | * the ES always wins. | |
995 | */ | |
09319b4e DS |
996 | evpn_route_select_install(bgp, vpn, dest); |
997 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
998 | |
999 | /* If this is a new route or some attribute has changed, export the | |
1000 | * route to the global table. The route will be advertised to peers | |
1001 | * from there. Note that this table is a 2-level tree (RD-level + | |
1002 | * Prefix-level) similar to L3VPN routes. | |
1003 | */ | |
1004 | if (route_changed) { | |
1005 | struct bgp_path_info *global_pi; | |
1006 | ||
09319b4e DS |
1007 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1008 | p, global_rd); | |
1009 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
1010 | attr_new, 1, &global_pi, | |
1011 | &route_changed); | |
c44ab6f1 AK |
1012 | |
1013 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
1014 | bgp_process(bgp, dest, afi, safi); |
1015 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
1016 | } |
1017 | ||
1018 | /* Unintern temporary. */ | |
1019 | aspath_unintern(&attr.aspath); | |
1020 | return 0; | |
1021 | } | |
1022 | ||
9c49ac74 AD |
1023 | /* |
1024 | * This function is called when the export RT for a VNI changes. | |
1025 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
1026 | * table and advertise these routes to peers. | |
1027 | */ | |
1028 | ||
1029 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
1030 | { | |
1031 | struct prefix_evpn p; | |
1032 | struct bgp_evpn_es *es; | |
1033 | struct bgp_evpn_es_evi *es_evi; | |
1034 | struct bgp_evpn_es_evi *es_evi_next; | |
1035 | ||
1036 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
1037 | &vpn->es_evi_rb_tree, es_evi_next) { | |
1038 | es = es_evi->es; | |
1039 | ||
1040 | /* Update EAD-ES */ | |
1041 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1042 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1043 | &es->esi, es->originator_ip); | |
1044 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
1045 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1046 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
1047 | bgp->vrf_id, es->esi_str, | |
1048 | es_evi->vpn->vni); | |
1049 | } | |
1050 | ||
1051 | /* Update EAD-EVI */ | |
1052 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1053 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1054 | &es->esi, es->originator_ip); | |
1055 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1056 | &p)) | |
1057 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1058 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1059 | bgp->vrf_id, es->esi_str, | |
1060 | es_evi->vpn->vni); | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | ||
c44ab6f1 AK |
1065 | /* Delete local Type-1 route */ |
1066 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1067 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1068 | { | |
1069 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1070 | } | |
1071 | ||
1072 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1073 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1074 | struct prefix_evpn *p) | |
1075 | { | |
1076 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1077 | } | |
1078 | ||
1079 | /* Generate EAD-EVI for all VNIs */ | |
1080 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1081 | struct bgp_evpn_es *es) | |
1082 | { | |
1083 | struct listnode *evi_node; | |
1084 | struct prefix_evpn p; | |
1085 | struct bgp_evpn_es_evi *es_evi; | |
1086 | ||
fe8293c3 AK |
1087 | /* EAD-per-EVI routes have been suppressed */ |
1088 | if (!bgp_mh_info->ead_evi_tx) | |
1089 | return; | |
1090 | ||
c44ab6f1 AK |
1091 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1092 | /* EAD-EVI route add for this ES is already done */ | |
1093 | return; | |
1094 | ||
1095 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1096 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1097 | &es->esi, es->originator_ip); | |
1098 | ||
1099 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1100 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1101 | continue; | |
1102 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1103 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1104 | "%u: Type4 route creation failure for ESI %s", | |
1105 | bgp->vrf_id, es->esi_str); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * Withdraw EAD-EVI for all VNIs | |
1111 | */ | |
1112 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1113 | struct bgp_evpn_es *es) | |
1114 | { | |
1115 | struct listnode *evi_node; | |
1116 | struct prefix_evpn p; | |
1117 | struct bgp_evpn_es_evi *es_evi; | |
1118 | ||
1119 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1120 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1121 | /* EAD-EVI route has not been advertised for this ES */ | |
1122 | return; | |
1123 | ||
1124 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1125 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1126 | &es->esi, es->originator_ip); | |
1127 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1128 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1129 | continue; | |
1130 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1131 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1132 | "%u: Type4 route creation failure for ESI %s", | |
1133 | bgp->vrf_id, es->esi_str); | |
1134 | } | |
1135 | } | |
185fb14a AK |
1136 | |
1137 | /* | |
c44ab6f1 | 1138 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1139 | */ |
c44ab6f1 AK |
1140 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1141 | struct attr *attr, uint8_t *pfx, int psize, | |
1142 | uint32_t addpath_id) | |
185fb14a AK |
1143 | { |
1144 | int ret; | |
c44ab6f1 | 1145 | struct prefix_rd prd; |
185fb14a | 1146 | esi_t esi; |
c44ab6f1 AK |
1147 | uint32_t eth_tag; |
1148 | mpls_label_t label; | |
185fb14a | 1149 | struct in_addr vtep_ip; |
185fb14a AK |
1150 | struct prefix_evpn p; |
1151 | ||
c44ab6f1 | 1152 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1153 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1154 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1155 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1156 | return -1; |
1157 | } | |
1158 | ||
1159 | /* Make prefix_rd */ | |
1160 | prd.family = AF_UNSPEC; | |
1161 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1162 | memcpy(&prd.val, pfx, RD_BYTES); |
1163 | pfx += RD_BYTES; | |
185fb14a AK |
1164 | |
1165 | /* get the ESI */ | |
1166 | memcpy(&esi, pfx, ESI_BYTES); | |
1167 | pfx += ESI_BYTES; | |
1168 | ||
c44ab6f1 AK |
1169 | /* Copy Ethernet Tag */ |
1170 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1171 | eth_tag = ntohl(eth_tag); | |
1172 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1173 | |
c44ab6f1 | 1174 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1175 | |
c44ab6f1 AK |
1176 | /* EAD route prefix doesn't include the nexthop in the global |
1177 | * table | |
1178 | */ | |
3a6290bd | 1179 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1180 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1181 | /* Process the route. */ |
1182 | if (attr) { | |
1183 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1184 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1185 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1186 | } else { |
1187 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1188 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1189 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1190 | } |
1191 | return ret; | |
1192 | } | |
1193 | ||
c44ab6f1 AK |
1194 | /*****************************************************************************/ |
1195 | /* Ethernet Segment Management | |
1196 | * 1. Ethernet Segment is a collection of links attached to the same | |
1197 | * server (MHD) or switch (MHN) | |
1198 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1199 | * 10-byte ES-ID. | |
1200 | * 3. Local ESs are configured in zebra and sent to BGP | |
1201 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1202 | * created on first reference and release on last de-reference | |
1203 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1204 | * to have an ES peer. | |
1205 | */ | |
1206 | ||
1207 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1208 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1209 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1210 | * have been imported into one or more VNIs | |
185fb14a | 1211 | */ |
c44ab6f1 AK |
1212 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1213 | { | |
1214 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1215 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1216 | ||
1217 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1218 | } | |
1219 | ||
1220 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1221 | struct in_addr vtep_ip) | |
1222 | { | |
1223 | struct bgp_evpn_es_vtep *es_vtep; | |
1224 | ||
1225 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1226 | ||
1227 | es_vtep->es = es; | |
1228 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
23aa35ad AK |
1229 | inet_ntop(AF_INET, &es_vtep->vtep_ip, es_vtep->vtep_str, |
1230 | sizeof(es_vtep->vtep_str)); | |
c44ab6f1 AK |
1231 | listnode_init(&es_vtep->es_listnode, es_vtep); |
1232 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1233 | ||
1234 | return es_vtep; | |
1235 | } | |
1236 | ||
1237 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1238 | { | |
1239 | struct bgp_evpn_es *es = es_vtep->es; | |
1240 | ||
1241 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1242 | es_vtep->evi_cnt) | |
1243 | /* as long as there is some reference we can't free it */ | |
1244 | return; | |
1245 | ||
1246 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1247 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1248 | } | |
1249 | ||
1250 | /* check if VTEP is already part of the list */ | |
1251 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1252 | struct in_addr vtep_ip) | |
1253 | { | |
1254 | struct listnode *node = NULL; | |
1255 | struct bgp_evpn_es_vtep *es_vtep; | |
1256 | ||
1257 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1258 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1259 | return es_vtep; | |
1260 | } | |
1261 | return NULL; | |
1262 | } | |
1263 | ||
1264 | /* Send the remote ES to zebra for NHG programming */ | |
1265 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1266 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1267 | { | |
1268 | struct bgp_evpn_es *es = es_vtep->es; | |
1269 | struct stream *s; | |
74e2bd89 | 1270 | uint32_t flags = 0; |
c44ab6f1 AK |
1271 | |
1272 | /* Check socket. */ | |
1273 | if (!zclient || zclient->sock < 0) | |
1274 | return 0; | |
1275 | ||
1276 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1277 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1278 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1279 | zlog_debug("No zebra instance, not installing remote es %s", | |
1280 | es->esi_str); | |
1281 | return 0; | |
1282 | } | |
1283 | ||
74e2bd89 AK |
1284 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1285 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1286 | ||
c44ab6f1 AK |
1287 | s = zclient->obuf; |
1288 | stream_reset(s); | |
1289 | ||
1290 | zclient_create_header(s, | |
1291 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1292 | bgp->vrf_id); | |
1293 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1294 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1295 | if (add) { |
1296 | stream_putl(s, flags); | |
1297 | stream_putc(s, es_vtep->df_alg); | |
1298 | stream_putw(s, es_vtep->df_pref); | |
1299 | } | |
c44ab6f1 AK |
1300 | |
1301 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1302 | ||
1303 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1304 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1305 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 | 1306 | |
23aa35ad AK |
1307 | frrtrace(3, frr_bgp, evpn_mh_vtep_zsend, add, es, es_vtep); |
1308 | ||
c44ab6f1 AK |
1309 | return zclient_send_message(zclient); |
1310 | } | |
1311 | ||
1312 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1313 | struct bgp_evpn_es_vtep *es_vtep, |
1314 | bool param_change) | |
c44ab6f1 AK |
1315 | { |
1316 | bool old_active; | |
1317 | bool new_active; | |
1318 | ||
d4980edf | 1319 | old_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 AK |
1320 | /* currently we need an active EVI reference to use the VTEP as |
1321 | * a nexthop. this may change... | |
1322 | */ | |
1323 | if (es_vtep->evi_cnt) | |
1324 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1325 | else | |
1326 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1327 | ||
d4980edf | 1328 | new_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 | 1329 | |
74e2bd89 | 1330 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1331 | |
74e2bd89 AK |
1332 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1333 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1334 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1335 | new_active ? "active" : "inactive", | |
1336 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1337 | |
74e2bd89 AK |
1338 | /* send remote ES to zebra */ |
1339 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1340 | |
8bcb09a1 AK |
1341 | /* The NHG is updated first for efficient failover handling. |
1342 | * Note the NHG can be de-activated while there are bgp | |
1343 | * routes referencing it. Zebra is capable of handling that | |
1344 | * elegantly by holding the NHG till all routes using it are | |
1345 | * removed. | |
26c03e43 | 1346 | */ |
8bcb09a1 | 1347 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1348 | /* queue up the es for background consistency checks */ |
1349 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1350 | } | |
c44ab6f1 AK |
1351 | } |
1352 | ||
1353 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1354 | struct bgp_evpn_es *es, |
1355 | struct in_addr vtep_ip, | |
1356 | bool esr, uint8_t df_alg, | |
1357 | uint16_t df_pref) | |
c44ab6f1 AK |
1358 | { |
1359 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1360 | bool param_change = false; |
c44ab6f1 AK |
1361 | |
1362 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1363 | ||
1364 | if (!es_vtep) | |
1365 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1366 | ||
1367 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1368 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1369 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1370 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1371 | |
74e2bd89 | 1372 | if (esr) { |
c44ab6f1 | 1373 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1374 | if ((es_vtep->df_pref != df_pref) |
1375 | || (es_vtep->df_alg != df_alg)) { | |
1376 | param_change = true; | |
1377 | es_vtep->df_pref = df_pref; | |
1378 | es_vtep->df_alg = df_alg; | |
1379 | } | |
1380 | } else { | |
c44ab6f1 | 1381 | ++es_vtep->evi_cnt; |
74e2bd89 | 1382 | } |
c44ab6f1 | 1383 | |
74e2bd89 | 1384 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1385 | |
1386 | return es_vtep; | |
1387 | } | |
1388 | ||
1389 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1390 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1391 | { | |
74e2bd89 AK |
1392 | bool param_change = false; |
1393 | ||
c44ab6f1 | 1394 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1395 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1396 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1397 | if (esr) { |
1398 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1399 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1400 | param_change = true; | |
1401 | es_vtep->df_pref = 0; | |
1402 | es_vtep->df_alg = 0; | |
1403 | } | |
c44ab6f1 AK |
1404 | } else { |
1405 | if (es_vtep->evi_cnt) | |
1406 | --es_vtep->evi_cnt; | |
1407 | } | |
1408 | ||
74e2bd89 | 1409 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1410 | bgp_evpn_es_vtep_free(es_vtep); |
1411 | } | |
1412 | ||
1413 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1414 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1415 | { | |
1416 | struct bgp_evpn_es_vtep *es_vtep; | |
1417 | ||
1418 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1419 | if (es_vtep) | |
1420 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1421 | } | |
1422 | ||
26c03e43 | 1423 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1424 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1425 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1426 | * state changes. | |
1427 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1428 | * the detination for efficient updates on - | |
1429 | * a. VTEP add/del - this results in a L3NHG update. | |
1430 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1431 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1432 | ****************************************************************************/ |
60605cbc | 1433 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1434 | { |
1435 | bgp_evpn_path_es_unlink(es_info); | |
1436 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1437 | } | |
1438 | ||
60605cbc AK |
1439 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1440 | { | |
1441 | if (mh_info->es_info) | |
1442 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1443 | if (mh_info->nh_info) |
1444 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1445 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1446 | } | |
1447 | ||
26c03e43 AK |
1448 | static struct bgp_path_es_info * |
1449 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1450 | { | |
1451 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1452 | struct bgp_path_mh_info *mh_info; |
1453 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1454 | |
1455 | e = bgp_path_info_extra_get(pi); | |
1456 | ||
60605cbc AK |
1457 | /* If mh_info doesn't exist allocate it */ |
1458 | mh_info = e->mh_info; | |
1459 | if (!mh_info) | |
1460 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1461 | sizeof(struct bgp_path_mh_info)); | |
1462 | ||
26c03e43 | 1463 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1464 | es_info = mh_info->es_info; |
1465 | if (!es_info) { | |
1466 | mh_info->es_info = es_info = | |
1467 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1468 | sizeof(struct bgp_path_es_info)); | |
1469 | es_info->vni = vni; | |
1470 | es_info->pi = pi; | |
26c03e43 AK |
1471 | } |
1472 | ||
60605cbc | 1473 | return es_info; |
26c03e43 AK |
1474 | } |
1475 | ||
60605cbc | 1476 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1477 | { |
1478 | struct bgp_evpn_es *es = es_info->es; | |
1479 | struct bgp_path_info *pi; | |
26c03e43 AK |
1480 | |
1481 | if (!es) | |
1482 | return; | |
1483 | ||
1484 | pi = es_info->pi; | |
1485 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1486 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1487 | &pi->net->p, es->esi_str); | |
26c03e43 | 1488 | |
58bff4d1 AK |
1489 | if (es_info->vni) |
1490 | list_delete_node(es->macip_evi_path_list, | |
1491 | &es_info->es_listnode); | |
1492 | else | |
1493 | list_delete_node(es->macip_global_path_list, | |
1494 | &es_info->es_listnode); | |
74efb822 | 1495 | |
26c03e43 AK |
1496 | es_info->es = NULL; |
1497 | ||
1498 | /* if there are no other references against the ES it | |
1499 | * needs to be freed | |
1500 | */ | |
1501 | bgp_evpn_es_free(es, __func__); | |
1502 | ||
1503 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1504 | * along with the path. | |
1505 | */ | |
1506 | } | |
1507 | ||
1508 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1509 | { | |
1510 | struct bgp_path_es_info *es_info; | |
1511 | struct bgp_evpn_es *es; | |
58bff4d1 | 1512 | struct bgp *bgp_evpn; |
26c03e43 | 1513 | |
60605cbc AK |
1514 | es_info = (pi->extra && pi->extra->mh_info) |
1515 | ? pi->extra->mh_info->es_info | |
1516 | : NULL; | |
26c03e43 AK |
1517 | /* if the esi is zero just unlink the path from the old es */ |
1518 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1519 | if (es_info) | |
1520 | bgp_evpn_path_es_unlink(es_info); | |
1521 | return; | |
1522 | } | |
1523 | ||
58bff4d1 | 1524 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1525 | if (!bgp_evpn) |
1526 | return; | |
1527 | ||
1528 | /* setup es_info against the path if it doesn't aleady exist */ | |
1529 | if (!es_info) | |
1530 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1531 | ||
1532 | /* find-create ES */ | |
1533 | es = bgp_evpn_es_find(esi); | |
1534 | if (!es) | |
f61fbf21 | 1535 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1536 | |
1537 | /* dup check */ | |
1538 | if (es_info->es == es) | |
1539 | return; | |
1540 | ||
1541 | /* unlink old ES if any */ | |
1542 | bgp_evpn_path_es_unlink(es_info); | |
1543 | ||
1544 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1545 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1546 | es->esi_str); | |
26c03e43 AK |
1547 | |
1548 | /* link mac-ip path to the new destination ES */ | |
1549 | es_info->es = es; | |
1550 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1551 | if (es_info->vni) |
1552 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1553 | else | |
1554 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1555 | } |
1556 | ||
74efb822 AK |
1557 | static bool bgp_evpn_is_macip_path(struct bgp_path_info *pi) |
1558 | { | |
1559 | struct prefix_evpn *evp; | |
1560 | ||
1561 | /* Only MAC-IP routes need to be linked (MAC-only routes can be | |
1562 | * skipped) as these lists are maintained for managing | |
1563 | * host routes in the tenant VRF | |
1564 | */ | |
1565 | evp = (struct prefix_evpn *)&pi->net->p; | |
1566 | return is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp); | |
1567 | } | |
1568 | ||
58bff4d1 AK |
1569 | /* When a remote ES is added to a VRF, routes using that as |
1570 | * a destination need to be migrated to a L3NHG or viceversa. | |
1571 | * This is done indirectly by re-attempting an install of the | |
1572 | * route in the associated VRFs. As a part of the VRF install use | |
1573 | * of l3 NHG is evaluated and this results in the | |
1574 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1575 | */ |
1576 | static void | |
1577 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1578 | const char *reason) |
26c03e43 AK |
1579 | { |
1580 | struct listnode *node; | |
1581 | struct bgp_path_es_info *es_info; | |
1582 | struct bgp_path_info *pi; | |
58bff4d1 | 1583 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1584 | |
36dd4574 AK |
1585 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1586 | return; | |
1587 | ||
26c03e43 | 1588 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1589 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1590 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1591 | |
58bff4d1 | 1592 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1593 | pi = es_info->pi; |
26c03e43 | 1594 | |
74efb822 AK |
1595 | if (!bgp_evpn_is_macip_path(pi)) |
1596 | continue; | |
1597 | ||
26c03e43 | 1598 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
2eef4f20 | 1599 | zlog_debug( |
58bff4d1 AK |
1600 | "update path %pFX linked to es %s on vrf chg", |
1601 | &pi->net->p, es->esi_str); | |
1602 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1603 | 1); | |
26c03e43 AK |
1604 | } |
1605 | } | |
1606 | ||
c44ab6f1 AK |
1607 | /* compare ES-IDs for the global ES RB tree */ |
1608 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1609 | const struct bgp_evpn_es *es2) | |
1610 | { | |
1611 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1612 | } | |
1613 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1614 | ||
1615 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1616 | { |
c44ab6f1 | 1617 | struct bgp_evpn_es tmp; |
185fb14a | 1618 | |
185fb14a | 1619 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1620 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1621 | } |
1622 | ||
c44ab6f1 | 1623 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1624 | { |
c44ab6f1 | 1625 | struct bgp_evpn_es *es; |
185fb14a AK |
1626 | |
1627 | if (!bgp) | |
1628 | return NULL; | |
1629 | ||
c44ab6f1 | 1630 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1631 | |
c44ab6f1 | 1632 | /* set the ESI */ |
185fb14a | 1633 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1634 | |
1635 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1636 | es->es_vtep_list = list_new(); |
1637 | listset_app_node_mem(es->es_vtep_list); | |
1638 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1639 | |
c44ab6f1 | 1640 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1641 | |
c44ab6f1 | 1642 | /* Initialize the ES routing table */ |
185fb14a AK |
1643 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1644 | ||
c44ab6f1 AK |
1645 | /* Add to rb_tree */ |
1646 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1647 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1648 | return NULL; | |
1649 | } | |
1650 | ||
c44ab6f1 AK |
1651 | /* Initialise the ES-EVI list */ |
1652 | es->es_evi_list = list_new(); | |
1653 | listset_app_node_mem(es->es_evi_list); | |
1654 | ||
c589d847 AK |
1655 | /* Initialise the ES-VRF list used for L3NHG management */ |
1656 | es->es_vrf_list = list_new(); | |
1657 | listset_app_node_mem(es->es_vrf_list); | |
1658 | ||
26c03e43 | 1659 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1660 | es->macip_evi_path_list = list_new(); |
1661 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1662 | es->macip_global_path_list = list_new(); |
1663 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1664 | |
c44ab6f1 AK |
1665 | QOBJ_REG(es, bgp_evpn_es); |
1666 | ||
185fb14a AK |
1667 | return es; |
1668 | } | |
1669 | ||
c44ab6f1 | 1670 | /* Free a given ES - |
185fb14a AK |
1671 | * This just frees appropriate memory, caller should have taken other |
1672 | * needed actions. | |
1673 | */ | |
45a859f1 | 1674 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1675 | { |
26c03e43 | 1676 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1677 | || listcount(es->macip_evi_path_list) |
1678 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1679 | return; |
1680 | ||
45a859f1 AK |
1681 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1682 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1683 | ||
c44ab6f1 AK |
1684 | /* cleanup resources maintained against the ES */ |
1685 | list_delete(&es->es_evi_list); | |
c589d847 | 1686 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1687 | list_delete(&es->es_vtep_list); |
d656e0ae | 1688 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1689 | list_delete(&es->macip_global_path_list); |
185fb14a | 1690 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1691 | |
1692 | /* remove the entry from various databases */ | |
1693 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1694 | bgp_evpn_es_cons_checks_pend_del(es); | |
1695 | ||
185fb14a AK |
1696 | QOBJ_UNREG(es); |
1697 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1698 | } | |
1699 | ||
74efb822 AK |
1700 | static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es *es) |
1701 | { | |
1702 | return (es->flags & BGP_EVPNES_LOCAL) | |
1703 | && !(es->flags & BGP_EVPNES_BYPASS); | |
1704 | } | |
1705 | ||
c44ab6f1 AK |
1706 | /* init local info associated with the ES */ |
1707 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1708 | { |
c44ab6f1 | 1709 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
74efb822 AK |
1710 | bool old_is_local; |
1711 | bool is_local; | |
185fb14a | 1712 | |
c44ab6f1 AK |
1713 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1714 | return; | |
185fb14a | 1715 | |
74efb822 | 1716 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1717 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
74efb822 | 1718 | |
c44ab6f1 AK |
1719 | listnode_init(&es->es_listnode, es); |
1720 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1721 | |
c44ab6f1 AK |
1722 | /* auto derive RD for this es */ |
1723 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1724 | es->prd.family = AF_UNSPEC; | |
1725 | es->prd.prefixlen = 64; | |
23d0a753 | 1726 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 | 1727 | (void)str2prefix_rd(buf, &es->prd); |
74efb822 AK |
1728 | |
1729 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1730 | if (old_is_local != is_local) | |
1731 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
c44ab6f1 AK |
1732 | } |
1733 | ||
1734 | /* clear any local info associated with the ES */ | |
d57e0c05 | 1735 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es, bool finish) |
c44ab6f1 | 1736 | { |
74efb822 AK |
1737 | bool old_is_local; |
1738 | bool is_local; | |
1739 | ||
c44ab6f1 AK |
1740 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1741 | return; | |
185fb14a | 1742 | |
74efb822 | 1743 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1744 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1745 | |
74efb822 | 1746 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
d57e0c05 | 1747 | if (!finish && (old_is_local != is_local)) |
74efb822 AK |
1748 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); |
1749 | ||
c44ab6f1 AK |
1750 | /* remove from the ES local list */ |
1751 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1752 | ||
1753 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1754 | ||
45a859f1 | 1755 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1756 | } |
1757 | ||
c44ab6f1 AK |
1758 | /* eval remote info associated with the ES */ |
1759 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1760 | { | |
1761 | if (es->remote_es_evi_cnt) { | |
1762 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1763 | } else { | |
1764 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1765 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1766 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1767 | } |
1768 | } | |
1769 | } | |
1770 | ||
70524092 AK |
1771 | /* If ES is present and local it needs to be active/oper-up for |
1772 | * including L3 EC | |
1773 | */ | |
1774 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1775 | { |
70524092 AK |
1776 | struct bgp_evpn_es *es; |
1777 | ||
1778 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1779 | return true; | |
1780 | ||
1781 | es = bgp_evpn_es_find(esi); | |
1782 | ||
1783 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1784 | || bgp_evpn_local_es_is_active(es)); | |
1785 | } | |
1786 | ||
74efb822 AK |
1787 | static bool bgp_evpn_is_valid_local_path(struct bgp_path_info *pi) |
1788 | { | |
1789 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1790 | && pi->type == ZEBRA_ROUTE_BGP | |
1791 | && pi->sub_type == BGP_ROUTE_STATIC); | |
1792 | } | |
1793 | ||
d656e0ae AK |
1794 | /* Update all local MAC-IP routes in the VNI routing table associated |
1795 | * with the ES. When the ES is down the routes are advertised without | |
1796 | * the L3 extcomm | |
70524092 AK |
1797 | */ |
1798 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1799 | { | |
1800 | struct listnode *node; | |
1801 | struct bgp_path_es_info *es_info; | |
1802 | struct bgp_path_info *pi; | |
70524092 AK |
1803 | struct bgp *bgp; |
1804 | struct bgpevpn *vpn; | |
1805 | ||
1806 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1807 | return; | |
1808 | ||
1809 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1810 | zlog_debug("update paths linked to es %s on oper chg", | |
1811 | es->esi_str); | |
1812 | ||
1813 | bgp = bgp_get_evpn(); | |
d656e0ae | 1814 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 | 1815 | pi = es_info->pi; |
74efb822 AK |
1816 | |
1817 | if (!bgp_evpn_is_valid_local_path(pi)) | |
70524092 AK |
1818 | continue; |
1819 | ||
74efb822 | 1820 | if (!bgp_evpn_is_macip_path(pi)) |
70524092 AK |
1821 | continue; |
1822 | ||
1823 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1824 | if (!vpn) | |
1825 | continue; | |
1826 | ||
1827 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 | 1828 | zlog_debug( |
70545a29 AK |
1829 | "update path %d %pFX linked to es %s on oper chg", |
1830 | es_info->vni, &pi->net->p, es->esi_str); | |
70524092 AK |
1831 | |
1832 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1833 | __func__); | |
1834 | } | |
74be8313 AK |
1835 | } |
1836 | ||
74efb822 AK |
1837 | static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info *pi) |
1838 | { | |
1839 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1840 | && pi->type == ZEBRA_ROUTE_BGP | |
1841 | && pi->sub_type == BGP_ROUTE_NORMAL); | |
1842 | } | |
1843 | ||
1844 | /* If an ES is no longer local (or becomes local) we need to re-install | |
1845 | * paths using that ES as destination. This is needed as the criteria | |
1846 | * for best path selection has changed. | |
1847 | */ | |
1848 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, | |
1849 | bool is_local) | |
1850 | { | |
1851 | struct listnode *node; | |
1852 | struct bgp_path_es_info *es_info; | |
1853 | struct bgp_path_info *pi; | |
74efb822 AK |
1854 | bool tmp_local; |
1855 | struct attr *attr_new; | |
1856 | struct attr attr_tmp; | |
1857 | ||
1858 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1859 | zlog_debug("update paths linked to es %s on chg to %s", | |
1860 | es->esi_str, is_local ? "local" : "non-local"); | |
1861 | ||
1862 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { | |
1863 | pi = es_info->pi; | |
1864 | ||
1865 | /* Consider "valid" remote routes */ | |
1866 | if (!bgp_evpn_is_valid_bgp_path(pi)) | |
1867 | continue; | |
1868 | ||
1869 | if (!pi->attr) | |
1870 | continue; | |
1871 | ||
1872 | tmp_local = !!(pi->attr->es_flags & ATTR_ES_IS_LOCAL); | |
1873 | if (tmp_local == is_local) | |
1874 | continue; | |
1875 | ||
1876 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1877 | zlog_debug( | |
70545a29 AK |
1878 | "update path %pFX linked to es %s on chg to %s", |
1879 | &pi->net->p, es->esi_str, | |
1880 | is_local ? "local" : "non-local"); | |
74efb822 AK |
1881 | |
1882 | attr_tmp = *pi->attr; | |
1883 | if (is_local) | |
1884 | attr_tmp.es_flags |= ATTR_ES_IS_LOCAL; | |
1885 | else | |
1886 | attr_tmp.es_flags &= ~ATTR_ES_IS_LOCAL; | |
1887 | attr_new = bgp_attr_intern(&attr_tmp); | |
1888 | bgp_attr_unintern(&pi->attr); | |
1889 | pi->attr = attr_new; | |
1890 | bgp_evpn_import_type2_route(pi, 1); | |
1891 | } | |
1892 | } | |
1893 | ||
74be8313 AK |
1894 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, |
1895 | struct bgp_evpn_es *es) | |
185fb14a | 1896 | { |
185fb14a | 1897 | struct prefix_evpn p; |
c44ab6f1 | 1898 | int ret; |
185fb14a | 1899 | |
c44ab6f1 AK |
1900 | /* withdraw ESR */ |
1901 | /* Delete and withdraw locally learnt ES route */ | |
1902 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1903 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1904 | if (ret) { | |
1905 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1906 | "%u failed to delete type-4 route for ESI %s", | |
1907 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1908 | } |
1909 | ||
c44ab6f1 AK |
1910 | /* withdraw EAD-EVI */ |
1911 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1912 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1913 | |
c44ab6f1 AK |
1914 | /* withdraw EAD-ES */ |
1915 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1916 | &es->esi, es->originator_ip); | |
1917 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1918 | if (ret) { | |
1919 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1920 | "%u failed to delete type-1 route for ESI %s", | |
1921 | bgp->vrf_id, es->esi_str); | |
1922 | } | |
70524092 AK |
1923 | |
1924 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1925 | } |
1926 | ||
74be8313 AK |
1927 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1928 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1929 | { |
74be8313 | 1930 | bool old_active; |
c44ab6f1 | 1931 | |
74be8313 AK |
1932 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1933 | return; | |
c44ab6f1 | 1934 | |
74be8313 AK |
1935 | old_active = bgp_evpn_local_es_is_active(es); |
1936 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1937 | ||
1938 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1939 | zlog_debug("local es %s down", es->esi_str); | |
1940 | ||
1941 | if (old_active) | |
1942 | bgp_evpn_local_es_deactivate(bgp, es); | |
1943 | } | |
1944 | ||
1945 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1946 | bool regen_ead, bool regen_esr) | |
1947 | { | |
1948 | struct prefix_evpn p; | |
c44ab6f1 | 1949 | |
74e2bd89 AK |
1950 | if (regen_esr) { |
1951 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1952 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1953 | /* generate ESR */ | |
1954 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1955 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1956 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1957 | "%u: Type4 route creation failure for ESI %s", | |
1958 | bgp->vrf_id, es->esi_str); | |
1959 | } | |
c44ab6f1 | 1960 | |
74e2bd89 AK |
1961 | if (regen_ead) { |
1962 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1963 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1964 | /* generate EAD-EVI */ | |
1965 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1966 | |
74e2bd89 AK |
1967 | /* generate EAD-ES */ |
1968 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1969 | es->originator_ip); | |
d934e491 | 1970 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1971 | } |
70524092 AK |
1972 | |
1973 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1974 | } |
1975 | ||
74be8313 AK |
1976 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1977 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1978 | bool regen_esr) | |
1979 | { | |
1980 | bool regen_ead = false; | |
1981 | bool active = false; | |
1982 | ||
1983 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1984 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1985 | zlog_debug("local es %s up", es->esi_str); | |
1986 | ||
1987 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1988 | regen_esr = true; | |
1989 | regen_ead = true; | |
1990 | } | |
1991 | ||
1992 | active = bgp_evpn_local_es_is_active(es); | |
1993 | if (active && (regen_ead || regen_esr)) | |
1994 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
1995 | } | |
1996 | ||
1997 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
1998 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
1999 | * bypass state. | |
2000 | * PS: EAD-per-EVI will continue to be advertised | |
2001 | */ | |
2002 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
2003 | struct bgp_evpn_es *es, bool bypass) | |
2004 | { | |
2005 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
2006 | bool old_active; | |
2007 | bool new_active; | |
74efb822 AK |
2008 | bool old_is_local; |
2009 | bool is_local; | |
74be8313 AK |
2010 | |
2011 | if (bypass == old_bypass) | |
2012 | return; | |
2013 | ||
2014 | old_active = bgp_evpn_local_es_is_active(es); | |
74efb822 | 2015 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
74be8313 AK |
2016 | if (bypass) |
2017 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2018 | else | |
2019 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2020 | ||
2021 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2022 | zlog_debug("local es %s bypass %s", es->esi_str, | |
2023 | bypass ? "set" : "clear"); | |
2024 | ||
2025 | new_active = bgp_evpn_local_es_is_active(es); | |
2026 | if (old_active != new_active) { | |
2027 | if (new_active) | |
2028 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
2029 | else | |
2030 | bgp_evpn_local_es_deactivate(bgp, es); | |
2031 | } | |
74efb822 AK |
2032 | |
2033 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
2034 | if (old_is_local != is_local) | |
2035 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
74be8313 AK |
2036 | } |
2037 | ||
c44ab6f1 AK |
2038 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
2039 | { | |
2040 | struct bgp_evpn_es_evi *es_evi; | |
2041 | struct listnode *evi_node, *evi_next_node; | |
2042 | ||
2043 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2044 | zlog_debug("del local es %s", es->esi_str); | |
2045 | ||
2046 | /* Delete all local EVPN ES routes from ESI table | |
2047 | * and schedule for processing (to withdraw from peers)) | |
2048 | */ | |
2049 | bgp_evpn_es_route_del_all(bgp, es); | |
2050 | ||
2051 | /* release all local ES EVIs associated with the ES */ | |
2052 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
2053 | evi_next_node, es_evi)) { | |
2054 | bgp_evpn_local_es_evi_do_del(es_evi); | |
2055 | } | |
2056 | ||
2057 | /* Clear local info associated with the ES and free it up if there is | |
2058 | * no remote reference | |
2059 | */ | |
d57e0c05 | 2060 | bgp_evpn_es_local_info_clear(es, false); |
c44ab6f1 AK |
2061 | } |
2062 | ||
74efb822 | 2063 | bool bgp_evpn_is_esi_local_and_non_bypass(esi_t *esi) |
7904e9fd AK |
2064 | { |
2065 | struct bgp_evpn_es *es = NULL; | |
2066 | ||
2067 | /* Lookup ESI hash - should exist. */ | |
2068 | es = bgp_evpn_es_find(esi); | |
74efb822 AK |
2069 | |
2070 | return es && bgp_evpn_is_es_local_and_non_bypass(es); | |
7904e9fd AK |
2071 | } |
2072 | ||
c44ab6f1 AK |
2073 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
2074 | { | |
2075 | struct bgp_evpn_es *es = NULL; | |
2076 | ||
2077 | /* Lookup ESI hash - should exist. */ | |
2078 | es = bgp_evpn_es_find(esi); | |
2079 | if (!es) { | |
eaf80288 DA |
2080 | flog_warn(EC_BGP_EVPN_ESI, "%u: ES missing at local ES DEL", |
2081 | bgp->vrf_id); | |
c44ab6f1 AK |
2082 | return -1; |
2083 | } | |
2084 | ||
2085 | bgp_evpn_local_es_do_del(bgp, es); | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | /* Handle device to ES id association. Results in the creation of a local | |
2090 | * ES. | |
2091 | */ | |
2092 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 2093 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 2094 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
2095 | { |
2096 | char buf[ESI_STR_LEN]; | |
2097 | struct bgp_evpn_es *es; | |
2098 | bool new_es = true; | |
74e2bd89 | 2099 | bool regen_esr = false; |
c44ab6f1 AK |
2100 | |
2101 | /* create the new es */ | |
2102 | es = bgp_evpn_es_find(esi); | |
2103 | if (es) { | |
2104 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
2105 | new_es = false; | |
2106 | } else { | |
2107 | es = bgp_evpn_es_new(bgp, esi); | |
2108 | if (!es) { | |
2109 | flog_err(EC_BGP_ES_CREATE, | |
2110 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
2111 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
2112 | return -1; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
2117 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
2118 | es->esi_str, &originator_ip, df_pref, | |
2119 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
2120 | |
2121 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
2122 | if (df_pref != es->df_pref) { |
2123 | es->df_pref = df_pref; | |
2124 | regen_esr = true; | |
2125 | } | |
c44ab6f1 AK |
2126 | bgp_evpn_es_local_info_set(bgp, es); |
2127 | ||
2128 | /* import all remote Type-4 routes in the ES table */ | |
2129 | if (new_es) | |
2130 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
2131 | true /* install */); | |
2132 | ||
2133 | /* create and advertise EAD-EVI routes for the ES - | |
2134 | * XXX - till an ES-EVI reference is created there is really nothing to | |
2135 | * advertise | |
2136 | */ | |
2137 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
2138 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
2139 | ||
74be8313 AK |
2140 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
2141 | ||
c44ab6f1 AK |
2142 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
2143 | * can be generated even if the link is inactive. | |
2144 | */ | |
2145 | if (oper_up) | |
74e2bd89 | 2146 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
2147 | else |
2148 | bgp_evpn_local_es_down(bgp, es); | |
2149 | ||
2150 | return 0; | |
2151 | } | |
2152 | ||
9e0c2fd1 AK |
2153 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2154 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2155 | { |
2156 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2157 | struct listnode *node; | |
2158 | struct bgp_evpn_es_vtep *es_vtep; | |
2159 | bool first = true; | |
ec779825 | 2160 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2161 | |
2162 | vtep_str[0] = '\0'; | |
2163 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2164 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2165 | |
c44ab6f1 | 2166 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2167 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2168 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2169 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2170 | |
2171 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2172 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2173 | if (first) | |
c44ab6f1 | 2174 | first = false; |
9e0c2fd1 AK |
2175 | else |
2176 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2177 | strlcat(vtep_str, |
ec779825 AK |
2178 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2179 | sizeof(ip_buf)), | |
23d0a753 | 2180 | vtep_str_size); |
9e0c2fd1 AK |
2181 | strlcat(vtep_str, "(", vtep_str_size); |
2182 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2183 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2184 | } |
2185 | ||
2186 | return vtep_str; | |
2187 | } | |
2188 | ||
c44ab6f1 AK |
2189 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2190 | struct bgp_evpn_es_vtep *es_vtep) | |
2191 | { | |
2192 | json_object *json_vtep_entry; | |
2193 | json_object *json_flags; | |
ec779825 | 2194 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2195 | |
2196 | json_vtep_entry = json_object_new_object(); | |
2197 | ||
ec779825 AK |
2198 | json_object_string_add( |
2199 | json_vtep_entry, "vtep_ip", | |
2200 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
2201 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2202 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2203 | json_flags = json_object_new_array(); | |
2204 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2205 | json_array_string_add(json_flags, "esr"); | |
2206 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2207 | json_array_string_add(json_flags, "active"); | |
2208 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2209 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2210 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2211 | es_vtep->df_pref); | |
2212 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2213 | es_vtep->df_pref); | |
2214 | } | |
c44ab6f1 AK |
2215 | } |
2216 | ||
2217 | json_object_array_add(json_vteps, | |
2218 | json_vtep_entry); | |
2219 | } | |
2220 | ||
74e2bd89 AK |
2221 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2222 | struct bgp_evpn_es *es) | |
2223 | { | |
2224 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2225 | struct listnode *node; | |
2226 | struct bgp_evpn_es_vtep *es_vtep; | |
2227 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2228 | ||
2229 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2230 | vtep_flag_str[0] = '\0'; | |
2231 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2232 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2233 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2234 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2235 | ||
2236 | if (!strlen(vtep_flag_str)) | |
2237 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2238 | ||
ec779825 | 2239 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2240 | vtep_flag_str); |
2241 | ||
2242 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2243 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2244 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2245 | sizeof(alg_buf)), | |
2246 | es_vtep->df_pref); | |
2247 | else | |
2248 | vty_out(vty, "\n"); | |
2249 | } | |
2250 | } | |
2251 | ||
c44ab6f1 AK |
2252 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2253 | struct bgp_evpn_es *es, json_object *json) | |
2254 | { | |
2255 | char buf1[RD_ADDRSTRLEN]; | |
2256 | struct listnode *node; | |
2257 | struct bgp_evpn_es_vtep *es_vtep; | |
2258 | ||
2259 | if (json) { | |
2260 | json_object *json_vteps; | |
2261 | json_object *json_types; | |
2262 | ||
2263 | json_object_string_add(json, "esi", es->esi_str); | |
2264 | json_object_string_add(json, "rd", | |
2265 | prefix_rd2str(&es->prd, buf1, | |
2266 | sizeof(buf1))); | |
2267 | ||
2268 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2269 | json_types = json_object_new_array(); | |
2270 | if (es->flags & BGP_EVPNES_LOCAL) | |
2271 | json_array_string_add(json_types, "local"); | |
2272 | if (es->flags & BGP_EVPNES_REMOTE) | |
2273 | json_array_string_add(json_types, "remote"); | |
2274 | json_object_object_add(json, "type", json_types); | |
2275 | } | |
2276 | ||
2277 | if (listcount(es->es_vtep_list)) { | |
2278 | json_vteps = json_object_new_array(); | |
2279 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2280 | node, es_vtep)) { | |
2281 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2282 | } | |
2283 | json_object_object_add(json, "vteps", json_vteps); | |
2284 | } | |
2285 | json_object_int_add(json, "vniCount", | |
2286 | listcount(es->es_evi_list)); | |
2287 | } else { | |
2288 | char type_str[4]; | |
2289 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2290 | ||
2291 | type_str[0] = '\0'; | |
74be8313 AK |
2292 | if (es->flags & BGP_EVPNES_BYPASS) |
2293 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2294 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2295 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2296 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2297 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2298 | if (es->inconsistencies) |
9e0c2fd1 | 2299 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2300 | |
9e0c2fd1 | 2301 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2302 | |
2303 | if (es->flags & BGP_EVPNES_LOCAL) | |
2304 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2305 | else | |
9e0c2fd1 | 2306 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2307 | |
2308 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2309 | es->esi_str, type_str, buf1, | |
2310 | listcount(es->es_evi_list), vtep_str); | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2315 | struct bgp_evpn_es *es, json_object *json) | |
2316 | { | |
ec779825 | 2317 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 2318 | |
c44ab6f1 AK |
2319 | if (json) { |
2320 | json_object *json_flags; | |
2321 | json_object *json_incons; | |
74e2bd89 AK |
2322 | json_object *json_vteps; |
2323 | struct listnode *node; | |
2324 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2325 | |
2326 | /* Add the "brief" info first */ | |
2327 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2328 | if (es->flags |
2329 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2330 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2331 | json_flags = json_object_new_array(); |
2332 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2333 | json_array_string_add(json_flags, "up"); | |
2334 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2335 | json_array_string_add(json_flags, | |
2336 | "advertiseEVI"); | |
74be8313 AK |
2337 | if (es->flags & BGP_EVPNES_BYPASS) |
2338 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2339 | json_object_object_add(json, "flags", json_flags); |
2340 | } | |
2341 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 2342 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 2343 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
2344 | json_object_int_add(json, "remoteVniCount", |
2345 | es->remote_es_evi_cnt); | |
229587fb AK |
2346 | json_object_int_add(json, "vrfCount", |
2347 | listcount(es->es_vrf_list)); | |
2348 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2349 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2350 | json_object_int_add(json, "macipGlobalPathCount", |
2351 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2352 | json_object_int_add(json, "inconsistentVniVtepCount", |
2353 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2354 | if (listcount(es->es_vtep_list)) { |
2355 | json_vteps = json_object_new_array(); | |
2356 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2357 | es_vtep)) { | |
2358 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2359 | } | |
2360 | json_object_object_add(json, "vteps", json_vteps); | |
2361 | } | |
c44ab6f1 AK |
2362 | if (es->inconsistencies) { |
2363 | json_incons = json_object_new_array(); | |
2364 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2365 | json_array_string_add(json_incons, | |
2366 | "vni-vtep-mismatch"); | |
2367 | json_object_object_add(json, "inconsistencies", | |
2368 | json_incons); | |
2369 | } | |
2370 | } else { | |
2371 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2372 | char type_str[4]; | |
c44ab6f1 AK |
2373 | char buf1[RD_ADDRSTRLEN]; |
2374 | ||
2375 | type_str[0] = '\0'; | |
2376 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2377 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2378 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2379 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2380 | |
c44ab6f1 AK |
2381 | if (es->flags & BGP_EVPNES_LOCAL) |
2382 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2383 | else | |
9e0c2fd1 | 2384 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2385 | |
2386 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2387 | vty_out(vty, " Type: %s\n", type_str); | |
2388 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2389 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2390 | if (es->flags & BGP_EVPNES_LOCAL) |
2391 | vty_out(vty, " Local ES DF preference: %u\n", | |
2392 | es->df_pref); | |
74be8313 AK |
2393 | if (es->flags & BGP_EVPNES_BYPASS) |
2394 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2395 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2396 | vty_out(vty, " Remote VNI Count: %d\n", | |
2397 | es->remote_es_evi_cnt); | |
229587fb | 2398 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2399 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2400 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2401 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2402 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2403 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2404 | es->incons_evi_vtep_cnt); | |
2405 | if (es->inconsistencies) { | |
2406 | incons_str[0] = '\0'; | |
2407 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2408 | strlcat(incons_str, "vni-vtep-mismatch", |
2409 | sizeof(incons_str)); | |
c44ab6f1 | 2410 | } else { |
9e0c2fd1 | 2411 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2412 | } |
2413 | vty_out(vty, " Inconsistencies: %s\n", | |
2414 | incons_str); | |
74e2bd89 AK |
2415 | if (listcount(es->es_vtep_list)) { |
2416 | vty_out(vty, " VTEPs:\n"); | |
2417 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2418 | } | |
c44ab6f1 AK |
2419 | vty_out(vty, "\n"); |
2420 | } | |
2421 | } | |
2422 | ||
2423 | /* Display all ESs */ | |
2424 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2425 | { | |
2426 | struct bgp_evpn_es *es; | |
9c7edc03 | 2427 | json_object *json_array = NULL; |
c44ab6f1 AK |
2428 | json_object *json = NULL; |
2429 | ||
2430 | if (uj) { | |
2431 | /* create an array of ESs */ | |
2432 | json_array = json_object_new_array(); | |
2433 | } else { | |
2434 | if (!detail) { | |
2435 | vty_out(vty, | |
74be8313 | 2436 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2437 | vty_out(vty, |
2438 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2439 | vty_out(vty, | |
2440 | "%-30s %-5s %-21s %-8s %s\n", | |
2441 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2446 | if (uj) | |
2447 | /* create a separate json object for each ES */ | |
2448 | json = json_object_new_object(); | |
2449 | if (detail) | |
2450 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2451 | else | |
2452 | bgp_evpn_es_show_entry(vty, es, json); | |
2453 | /* add ES to the json array */ | |
2454 | if (uj) | |
2455 | json_object_array_add(json_array, json); | |
2456 | } | |
2457 | ||
2458 | /* print the array of json-ESs */ | |
2459 | if (uj) { | |
2460 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2461 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2462 | json_object_free(json_array); | |
2463 | } | |
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 | ||
2483 | if (uj) { | |
2484 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2485 | json, JSON_C_TO_STRING_PRETTY)); | |
2486 | json_object_free(json); | |
2487 | } | |
2488 | } | |
2489 | ||
c589d847 AK |
2490 | /*****************************************************************************/ |
2491 | /* Ethernet Segment to VRF association - | |
2492 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2493 | * triggers the creation of an ES-VRF entry. | |
2494 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2495 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2496 | * a /32 or host route entry in the dataplane. If the destination of | |
2497 | * the host route is a remote-ES the route is programmed with the | |
2498 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2499 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2500 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2501 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2502 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2503 | * allowing for a faster failover. | |
2504 | * | |
2505 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2506 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2507 | * in that VRF. | |
2508 | */ | |
2509 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2510 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2511 | bool v4_nhg) | |
c589d847 | 2512 | { |
8bcb09a1 AK |
2513 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2514 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2515 | struct listnode *node; |
2516 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2517 | struct nexthop nh; |
2518 | struct zapi_nexthop *api_nh; | |
2519 | struct zapi_nhg api_nhg = {}; | |
2520 | ||
2521 | /* Skip installation of L3-NHG if host routes used */ | |
2522 | if (!nhg_id) | |
2523 | return; | |
c589d847 AK |
2524 | |
2525 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2526 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2527 | es_vrf->bgp_vrf->vrf_id, | |
2528 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2529 | ||
23aa35ad AK |
2530 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, true, v4_nhg, nhg_id, es_vrf); |
2531 | ||
8bcb09a1 AK |
2532 | /* only the gateway ip changes for each NH. rest of the params |
2533 | * are constant | |
2534 | */ | |
2535 | memset(&nh, 0, sizeof(nh)); | |
2536 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2537 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2538 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2539 | nh.weight = 1; | |
2540 | nh.type = | |
2541 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2542 | ||
2543 | api_nhg.id = nhg_id; | |
c589d847 | 2544 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2545 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2546 | continue; | |
2547 | ||
719b209c MS |
2548 | /* Don't overrun the zapi buffer. */ |
2549 | if (api_nhg.nexthop_num == MULTIPATH_NUM) | |
2550 | break; | |
2551 | ||
8bcb09a1 AK |
2552 | /* overwrite the gw */ |
2553 | if (v4_nhg) | |
2554 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2555 | else | |
2556 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2557 | es_vtep->vtep_ip); | |
2558 | ||
2559 | /* convert to zapi format */ | |
2560 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2561 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2562 | ||
2563 | ++api_nhg.nexthop_num; | |
2564 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2565 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2566 | &es_vtep->vtep_ip, | |
2567 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
23aa35ad AK |
2568 | |
2569 | frrtrace(3, frr_bgp, evpn_mh_nh_zsend, nhg_id, es_vtep, es_vrf); | |
c589d847 AK |
2570 | } |
2571 | ||
8bcb09a1 AK |
2572 | if (!api_nhg.nexthop_num) |
2573 | return; | |
2574 | ||
8bcb09a1 | 2575 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); |
c589d847 AK |
2576 | } |
2577 | ||
8bcb09a1 AK |
2578 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2579 | { | |
2580 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2581 | return false; | |
2582 | ||
2583 | /* Check socket. */ | |
2584 | if (!zclient || zclient->sock < 0) | |
2585 | return false; | |
2586 | ||
2587 | return true; | |
2588 | } | |
2589 | ||
2590 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2591 | { |
8bcb09a1 AK |
2592 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2593 | return; | |
2594 | ||
2595 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2596 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2597 | } | |
2598 | ||
2599 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2600 | bool v4_nhg) | |
2601 | { | |
2602 | struct zapi_nhg api_nhg = {}; | |
2603 | ||
2604 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2605 | ||
2606 | /* Skip installation of L3-NHG if host routes used */ | |
2607 | if (!api_nhg.id) | |
2608 | return; | |
2609 | ||
c589d847 | 2610 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2611 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2612 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2613 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2614 | ||
23aa35ad AK |
2615 | |
2616 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, false, v4_nhg, api_nhg.id, | |
2617 | es_vrf); | |
2618 | ||
8bcb09a1 AK |
2619 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); |
2620 | } | |
c589d847 | 2621 | |
8bcb09a1 AK |
2622 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2623 | { | |
2624 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2625 | return; | |
2626 | ||
2627 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2628 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2629 | } |
2630 | ||
2631 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2632 | { | |
2633 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2634 | return; | |
2635 | ||
2636 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2637 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2638 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2639 | es_vrf->nhg_id); | |
2640 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2641 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2642 | /* MAC-IPs can now be installed via the L3NHG */ |
2643 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2644 | } |
2645 | ||
2646 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2647 | { | |
2648 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2649 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2650 | return; | |
2651 | } | |
2652 | ||
2653 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2654 | if (!update) | |
2655 | return; | |
2656 | } else { | |
2657 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2658 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2659 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2660 | es_vrf->nhg_id); | |
2661 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2662 | /* MAC-IPs can now be installed via the L3NHG */ |
2663 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2664 | } |
2665 | ||
2666 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2667 | } | |
2668 | ||
2669 | /* when a VTEP is activated or de-activated against an ES associated | |
2670 | * VRFs' NHG needs to be updated | |
2671 | */ | |
2672 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2673 | { | |
2674 | struct bgp_evpn_es_vrf *es_vrf; | |
2675 | struct listnode *es_vrf_node; | |
2676 | ||
2677 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2678 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2679 | ||
2680 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2681 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2682 | } | |
2683 | ||
2684 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2685 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2686 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2687 | { | |
2688 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2689 | } | |
2690 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2691 | ||
2692 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2693 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2694 | { | |
2695 | /* Initialize the ES-VRF RB tree */ | |
2696 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2697 | } | |
2698 | ||
2699 | /* find the ES-VRF in the per-VRF RB tree */ | |
2700 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2701 | struct bgp *bgp_vrf) | |
2702 | { | |
2703 | struct bgp_evpn_es_vrf es_vrf; | |
2704 | ||
2705 | es_vrf.es = es; | |
2706 | ||
2707 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2708 | } | |
2709 | ||
2710 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2711 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2712 | struct bgp *bgp_vrf) | |
2713 | { | |
2714 | struct bgp_evpn_es_vrf *es_vrf; | |
2715 | ||
2716 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2717 | ||
2718 | es_vrf->es = es; | |
2719 | es_vrf->bgp_vrf = bgp_vrf; | |
2720 | ||
2721 | /* insert into the VRF-ESI rb tree */ | |
2722 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2723 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2724 | return NULL; | |
2725 | } | |
2726 | ||
2727 | /* add to the ES's VRF list */ | |
2728 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2729 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2730 | ||
2731 | /* setup the L3 NHG id for the ES */ | |
2732 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2733 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2734 | ||
c589d847 | 2735 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2736 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2737 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2738 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2739 | ||
36dd4574 AK |
2740 | /* update paths in the VRF that may already be associated with |
2741 | * this destination ES | |
2742 | */ | |
58bff4d1 | 2743 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2744 | |
c589d847 AK |
2745 | return es_vrf; |
2746 | } | |
2747 | ||
2748 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2749 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2750 | { | |
2751 | struct bgp_evpn_es *es = es_vrf->es; | |
2752 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2753 | ||
2754 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2755 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2756 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2757 | ||
2758 | /* Remove the NHG resources */ | |
2759 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2760 | if (es_vrf->nhg_id) | |
2761 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2762 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2763 | if (es_vrf->v6_nhg_id) |
2764 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2765 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2766 | |
2767 | /* remove from the ES's VRF list */ | |
2768 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2769 | ||
2770 | /* remove from the VRF-ESI rb tree */ | |
2771 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2772 | ||
d656e0ae AK |
2773 | /* update paths in the VRF that may already be associated with |
2774 | * this destination ES | |
2775 | */ | |
58bff4d1 | 2776 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2777 | |
c589d847 AK |
2778 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2779 | } | |
2780 | ||
2781 | /* deref and delete if there are no references */ | |
2782 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2783 | { | |
2784 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2785 | ||
2786 | if (!es_vrf) | |
2787 | return; | |
2788 | ||
2789 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2790 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2791 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2792 | es_vrf->bgp_vrf->vrf_id); | |
2793 | ||
2794 | es_evi->es_vrf = NULL; | |
2795 | if (es_vrf->ref_cnt) | |
2796 | --es_vrf->ref_cnt; | |
2797 | ||
2798 | if (!es_vrf->ref_cnt) | |
2799 | bgp_evpn_es_vrf_delete(es_vrf); | |
2800 | } | |
2801 | ||
2802 | /* find or create and reference */ | |
2803 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2804 | { | |
2805 | struct bgp_evpn_es *es = es_evi->es; | |
2806 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2807 | struct bgp *old_bgp_vrf = NULL; | |
2808 | ||
2809 | if (es_vrf) | |
2810 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2811 | ||
2812 | if (old_bgp_vrf == bgp_vrf) | |
2813 | return; | |
2814 | ||
2815 | /* deref the old ES-VRF */ | |
2816 | bgp_evpn_es_vrf_deref(es_evi); | |
2817 | ||
2818 | if (!bgp_vrf) | |
2819 | return; | |
2820 | ||
2821 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2822 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2823 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2824 | ||
2825 | /* find-create the new ES-VRF */ | |
2826 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2827 | if (!es_vrf) | |
2828 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2829 | if (!es_vrf) | |
2830 | return; | |
2831 | ||
2832 | es_evi->es_vrf = es_vrf; | |
2833 | ++es_vrf->ref_cnt; | |
2834 | } | |
2835 | ||
2836 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2837 | * associated ES-EVI entries | |
2838 | */ | |
2839 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2840 | { | |
2841 | struct bgp_evpn_es_evi *es_evi; | |
2842 | ||
2843 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2844 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2845 | ||
2846 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2847 | bgp_evpn_es_vrf_deref(es_evi); | |
2848 | } | |
2849 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2850 | { | |
2851 | struct bgp_evpn_es_evi *es_evi; | |
2852 | ||
2853 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2854 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2855 | ||
2856 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2857 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2858 | } | |
2859 | ||
58bff4d1 AK |
2860 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2861 | * multi-path list. | |
2862 | * 2. If ES-VRF is present - | |
2863 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2864 | * all the PEs attached to the VRF are down) do not install the route | |
2865 | * in zebra. | |
2866 | * - if L3NHG has been activated install the route via that L3NHG | |
2867 | */ | |
2868 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2869 | bool *is_l3nhg_active, | |
2870 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2871 | { |
2872 | struct bgp_evpn_es *es; | |
2873 | struct bgp_evpn_es_vrf *es_vrf; | |
2874 | ||
2875 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2876 | return; |
36dd4574 AK |
2877 | |
2878 | es = bgp_evpn_es_find(esi); | |
2879 | if (!es) | |
58bff4d1 | 2880 | return; |
36dd4574 AK |
2881 | |
2882 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2883 | if (!es_vrf) | |
58bff4d1 AK |
2884 | return; |
2885 | ||
2886 | *use_l3nhg = true; | |
2887 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2888 | *is_l3nhg_active = true; | |
36dd4574 AK |
2889 | if (es_vrf_p) |
2890 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2891 | } |
2892 | ||
6348981a AK |
2893 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2894 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2895 | uint32_t *nhg_p) | |
2896 | { | |
2897 | esi_t *esi; | |
36dd4574 | 2898 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2899 | struct bgp_path_info *parent_pi; |
2900 | struct bgp_node *rn; | |
2901 | struct prefix_evpn *evp; | |
2902 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2903 | bool use_l3nhg = false; |
2904 | bool is_l3nhg_active = false; | |
6348981a AK |
2905 | |
2906 | *nhg_p = 0; | |
2907 | ||
9f570418 AK |
2908 | /* we don't support NHG for routes leaked from another VRF yet */ |
2909 | if (pi->extra && pi->extra->bgp_orig) | |
2910 | return false; | |
2911 | ||
6348981a AK |
2912 | parent_pi = get_route_parent_evpn(pi); |
2913 | if (!parent_pi) | |
2914 | return false; | |
2915 | ||
2916 | rn = parent_pi->net; | |
2917 | if (!rn) | |
2918 | return false; | |
2919 | ||
2920 | evp = (struct prefix_evpn *)&rn->p; | |
2921 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2922 | return false; | |
2923 | ||
6348981a AK |
2924 | /* non-es path, use legacy-exploded multipath */ |
2925 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2926 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2927 | return false; | |
2928 | ||
58bff4d1 AK |
2929 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2930 | &es_vrf); | |
2931 | ||
36dd4574 | 2932 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2933 | if (!use_l3nhg) |
36dd4574 AK |
2934 | return false; |
2935 | ||
2936 | /* if the NHG has not been installed we cannot install the route yet, | |
2937 | * return a 0-NHG to indicate that | |
6348981a | 2938 | */ |
58bff4d1 | 2939 | if (!is_l3nhg_active) |
6348981a AK |
2940 | return true; |
2941 | ||
2942 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2943 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2944 | *nhg_p = es_vrf->v6_nhg_id; |
2945 | else | |
2946 | *nhg_p = es_vrf->nhg_id; | |
2947 | ||
2948 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2949 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2950 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2951 | * the NHG associated with the ES. fallback to legacy-exploded |
2952 | * multipath | |
2953 | */ | |
2954 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2955 | sizeof(*esi))) | |
2956 | return false; | |
2957 | } | |
2958 | ||
2959 | return true; | |
2960 | } | |
2961 | ||
229587fb AK |
2962 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2963 | struct bgp_evpn_es_vrf *es_vrf, | |
2964 | json_object *json) | |
2965 | { | |
2966 | struct bgp_evpn_es *es = es_vrf->es; | |
2967 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2968 | ||
2969 | if (json) { | |
2970 | json_object *json_types; | |
2971 | ||
2972 | json_object_string_add(json, "esi", es->esi_str); | |
2973 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2974 | ||
2975 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2976 | json_types = json_object_new_array(); | |
2977 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2978 | json_array_string_add(json_types, "active"); | |
2979 | json_object_object_add(json, "flags", json_types); | |
2980 | } | |
2981 | ||
2982 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2983 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2984 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2985 | } else { | |
2986 | char flags_str[4]; | |
2987 | ||
2988 | flags_str[0] = '\0'; | |
2989 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2990 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2991 | ||
2992 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2993 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2994 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2999 | struct bgp_evpn_es *es) | |
3000 | { | |
3001 | json_object *json = NULL; | |
3002 | struct listnode *es_vrf_node; | |
3003 | struct bgp_evpn_es_vrf *es_vrf; | |
3004 | ||
3005 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
3006 | /* create a separate json object for each ES-VRF */ | |
3007 | if (json_array) | |
3008 | json = json_object_new_object(); | |
3009 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
3010 | /* add ES-VRF to the json array */ | |
3011 | if (json_array) | |
3012 | json_object_array_add(json_array, json); | |
3013 | } | |
3014 | } | |
3015 | ||
3016 | /* Display all ES VRFs */ | |
3017 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
3018 | { | |
3019 | json_object *json_array = NULL; | |
3020 | ||
3021 | if (uj) { | |
3022 | /* create an array of ESs */ | |
3023 | json_array = json_object_new_array(); | |
3024 | } else { | |
3025 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
3026 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
3027 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
3028 | } | |
3029 | ||
3030 | if (es) { | |
3031 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3032 | } else { | |
3033 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
3034 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3035 | } | |
3036 | ||
3037 | /* print the array of json-ESs */ | |
3038 | if (uj) { | |
3039 | vty_out(vty, "%s\n", | |
3040 | json_object_to_json_string_ext( | |
3041 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3042 | json_object_free(json_array); | |
3043 | } | |
3044 | } | |
3045 | ||
3046 | /* Display specific ES VRF */ | |
3047 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
3048 | { | |
3049 | struct bgp_evpn_es *es; | |
3050 | ||
3051 | es = bgp_evpn_es_find(esi); | |
3052 | if (es) { | |
3053 | bgp_evpn_es_vrf_show(vty, uj, es); | |
3054 | } else { | |
3055 | if (!uj) | |
3056 | vty_out(vty, "ESI not found\n"); | |
3057 | } | |
3058 | } | |
3059 | ||
c44ab6f1 AK |
3060 | /*****************************************************************************/ |
3061 | /* Ethernet Segment to EVI association - | |
3062 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
3063 | * (bgpevpn->es_evi_rb_tree). | |
3064 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
3065 | * advertises an EAD-EVI (Type-1 EVPN) route | |
3066 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
3067 | * it. | |
3068 | */ | |
3069 | ||
3070 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
3071 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
3072 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
3073 | * VTEPs for which both routes have been rxed are activated. Activation | |
3074 | * creates a NHG in the parent ES. | |
3075 | */ | |
3076 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
3077 | { | |
3078 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
3079 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
3080 | ||
3081 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
3082 | } | |
3083 | ||
3084 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
3085 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3086 | { | |
3087 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3088 | ||
3089 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
3090 | ||
3091 | evi_vtep->es_evi = es_evi; | |
3092 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
3093 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
3094 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3095 | ||
3096 | return evi_vtep; | |
3097 | } | |
3098 | ||
3099 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3100 | { | |
3101 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
3102 | ||
3103 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
3104 | /* as long as there is some reference we can't free it */ | |
3105 | return; | |
3106 | ||
3107 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3108 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
3109 | } | |
3110 | ||
3111 | /* check if VTEP is already part of the list */ | |
3112 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
3113 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3114 | { | |
3115 | struct listnode *node = NULL; | |
3116 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3117 | ||
3118 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3119 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
3120 | return evi_vtep; | |
3121 | } | |
3122 | return NULL; | |
3123 | } | |
3124 | ||
3125 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
3126 | * EAD-per-EVI routes are rxed from it. | |
3127 | */ | |
3128 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
3129 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3130 | { | |
3131 | bool old_active; | |
3132 | bool new_active; | |
fe8293c3 | 3133 | uint32_t ead_activity_flags; |
c44ab6f1 | 3134 | |
d4980edf | 3135 | old_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 | 3136 | |
fe8293c3 AK |
3137 | if (bgp_mh_info->ead_evi_rx) |
3138 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
3139 | * before it can be activated. | |
3140 | */ | |
3141 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
3142 | else | |
3143 | /* EAD-per-ES is sufficent to activate the PE */ | |
3144 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
3145 | ||
3146 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
3147 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
3148 | else | |
3149 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3150 | ||
d4980edf | 3151 | new_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 AK |
3152 | |
3153 | if (old_active == new_active) | |
3154 | return; | |
3155 | ||
3156 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3157 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3158 | evi_vtep->es_evi->es->esi_str, | |
3159 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3160 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3161 | |
3162 | /* add VTEP to parent es */ | |
3163 | if (new_active) { | |
3164 | struct bgp_evpn_es_vtep *es_vtep; | |
3165 | ||
3166 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
3167 | evi_vtep->vtep_ip, false /*esr*/, |
3168 | 0, 0); | |
c44ab6f1 AK |
3169 | evi_vtep->es_vtep = es_vtep; |
3170 | } else { | |
3171 | if (evi_vtep->es_vtep) { | |
3172 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3173 | false /*esr*/); | |
3174 | evi_vtep->es_vtep = NULL; | |
3175 | } | |
3176 | } | |
3177 | /* queue up the parent es for background consistency checks */ | |
3178 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3179 | } | |
3180 | ||
3181 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3182 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3183 | bool ead_es) | |
3184 | { | |
3185 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3186 | ||
3187 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3188 | ||
3189 | if (!evi_vtep) | |
3190 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3191 | ||
3192 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3193 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3194 | evi_vtep->es_evi->es->esi_str, | |
3195 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3196 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3197 | |
3198 | if (ead_es) | |
3199 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3200 | else | |
3201 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3202 | ||
3203 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3204 | } | |
3205 | ||
3206 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3207 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3208 | bool ead_es) | |
3209 | { | |
3210 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3211 | ||
3212 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3213 | if (!evi_vtep) | |
3214 | return; | |
3215 | ||
3216 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3217 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3218 | evi_vtep->es_evi->es->esi_str, | |
3219 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3220 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3221 | |
3222 | if (ead_es) | |
3223 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3224 | else | |
3225 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3226 | ||
3227 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3228 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3229 | } | |
3230 | ||
3231 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3232 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3233 | const struct bgp_evpn_es_evi *es_evi2) | |
3234 | { | |
3235 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3236 | } | |
3237 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3238 | ||
3239 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3240 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3241 | struct bgpevpn *vpn) | |
3242 | { | |
3243 | struct bgp_evpn_es_evi es_evi; | |
3244 | ||
3245 | es_evi.es = es; | |
3246 | ||
3247 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3248 | } | |
3249 | ||
3250 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3251 | * tables. | |
3252 | */ | |
3253 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3254 | struct bgpevpn *vpn) | |
3255 | { | |
3256 | struct bgp_evpn_es_evi *es_evi; | |
3257 | ||
3258 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3259 | ||
3260 | es_evi->es = es; | |
3261 | es_evi->vpn = vpn; | |
3262 | ||
3263 | /* Initialise the VTEP list */ | |
3264 | es_evi->es_evi_vtep_list = list_new(); | |
3265 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3266 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3267 | ||
3268 | /* insert into the VNI-ESI rb tree */ | |
3269 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3270 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3271 | return NULL; | |
3272 | } | |
3273 | ||
3274 | /* add to the ES's VNI list */ | |
3275 | listnode_init(&es_evi->es_listnode, es_evi); | |
3276 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3277 | ||
c589d847 AK |
3278 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3279 | ||
c44ab6f1 AK |
3280 | return es_evi; |
3281 | } | |
3282 | ||
3283 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3284 | * up the memory. | |
3285 | */ | |
333ad64b AK |
3286 | static struct bgp_evpn_es_evi * |
3287 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3288 | { |
3289 | struct bgp_evpn_es *es = es_evi->es; | |
3290 | struct bgpevpn *vpn = es_evi->vpn; | |
3291 | ||
3292 | /* cannot free the element as long as there is a local or remote | |
3293 | * reference | |
3294 | */ | |
3295 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3296 | return es_evi; |
c44ab6f1 | 3297 | |
c589d847 AK |
3298 | bgp_evpn_es_vrf_deref(es_evi); |
3299 | ||
c44ab6f1 AK |
3300 | /* remove from the ES's VNI list */ |
3301 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3302 | ||
3303 | /* remove from the VNI-ESI rb tree */ | |
3304 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3305 | ||
3306 | /* free the VTEP list */ | |
3307 | list_delete(&es_evi->es_evi_vtep_list); | |
3308 | ||
3309 | /* remove from the VNI-ESI rb tree */ | |
3310 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3311 | |
3312 | return NULL; | |
c44ab6f1 AK |
3313 | } |
3314 | ||
3315 | /* init local info associated with the ES-EVI */ | |
3316 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3317 | { | |
3318 | struct bgpevpn *vpn = es_evi->vpn; | |
3319 | ||
3320 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3321 | return; | |
3322 | ||
3323 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3324 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3325 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3326 | } | |
3327 | ||
3328 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3329 | static struct bgp_evpn_es_evi * |
3330 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3331 | { |
3332 | struct bgpevpn *vpn = es_evi->vpn; | |
3333 | ||
c44ab6f1 AK |
3334 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); |
3335 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3336 | ||
333ad64b | 3337 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3338 | } |
3339 | ||
3340 | /* eval remote info associated with the ES */ | |
3341 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3342 | { | |
3343 | struct bgp_evpn_es *es = es_evi->es; | |
3344 | ||
3345 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3346 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3347 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3348 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3349 | ++es->remote_es_evi_cnt; | |
3350 | /* set remote on the parent es */ | |
3351 | bgp_evpn_es_remote_info_re_eval(es); | |
3352 | } | |
3353 | } else { | |
3354 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3355 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3356 | if (es->remote_es_evi_cnt) | |
3357 | --es->remote_es_evi_cnt; | |
3358 | bgp_evpn_es_evi_free(es_evi); | |
3359 | /* check if "remote" can be cleared from the | |
3360 | * parent es. | |
3361 | */ | |
3362 | bgp_evpn_es_remote_info_re_eval(es); | |
3363 | } | |
3364 | } | |
3365 | } | |
3366 | ||
333ad64b AK |
3367 | static struct bgp_evpn_es_evi * |
3368 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3369 | { |
3370 | struct prefix_evpn p; | |
3371 | struct bgp_evpn_es *es = es_evi->es; | |
3372 | struct bgp *bgp; | |
3373 | ||
3374 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3375 | return es_evi; |
c44ab6f1 AK |
3376 | |
3377 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3378 | zlog_debug("del local es %s evi %u", | |
3379 | es_evi->es->esi_str, | |
3380 | es_evi->vpn->vni); | |
3381 | ||
3382 | bgp = bgp_get_evpn(); | |
3383 | ||
3384 | if (bgp) { | |
3385 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3386 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3387 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3388 | &es->esi, es->originator_ip); | |
3389 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3390 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3391 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3392 | bgp->vrf_id, es->esi_str, | |
3393 | es_evi->vpn->vni); | |
3394 | } | |
3395 | ||
3396 | /* withdraw and delete EAD-EVI */ | |
3397 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3398 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3399 | &es->esi, es->originator_ip); | |
3400 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3401 | es, es_evi->vpn, &p)) | |
3402 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3403 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3404 | bgp->vrf_id, es->esi_str, | |
3405 | es_evi->vpn->vni); | |
3406 | } | |
3407 | } | |
3408 | ||
333ad64b | 3409 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3410 | } |
3411 | ||
3412 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3413 | { | |
3414 | struct bgpevpn *vpn; | |
3415 | struct bgp_evpn_es *es; | |
3416 | struct bgp_evpn_es_evi *es_evi; | |
3417 | char buf[ESI_STR_LEN]; | |
3418 | ||
3419 | es = bgp_evpn_es_find(esi); | |
3420 | if (!es) { | |
3421 | flog_err( | |
3422 | EC_BGP_ES_CREATE, | |
3423 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3424 | bgp->vrf_id, vni, | |
3425 | esi_to_str(esi, buf, sizeof(buf))); | |
3426 | return -1; | |
3427 | } | |
3428 | ||
3429 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3430 | if (!vpn) { | |
3431 | flog_err( | |
3432 | EC_BGP_ES_CREATE, | |
3433 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3434 | bgp->vrf_id, vni, es->esi_str); | |
3435 | return -1; | |
3436 | } | |
3437 | ||
3438 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3439 | if (!es_evi) { | |
3440 | flog_err( | |
3441 | EC_BGP_ES_CREATE, | |
3442 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3443 | bgp->vrf_id, vni, es->esi_str); | |
3444 | return -1; | |
3445 | } | |
3446 | ||
3447 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3448 | return 0; | |
3449 | } | |
3450 | ||
3451 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3452 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3453 | { | |
3454 | struct bgpevpn *vpn; | |
3455 | struct prefix_evpn p; | |
3456 | struct bgp_evpn_es *es; | |
3457 | struct bgp_evpn_es_evi *es_evi; | |
3458 | char buf[ESI_STR_LEN]; | |
3459 | ||
3460 | es = bgp_evpn_es_find(esi); | |
3461 | if (!es) { | |
3462 | flog_err( | |
3463 | EC_BGP_ES_CREATE, | |
3464 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3465 | bgp->vrf_id, vni, | |
3466 | esi_to_str(esi, buf, sizeof(buf))); | |
3467 | return -1; | |
3468 | } | |
3469 | ||
3470 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3471 | if (!vpn) { | |
3472 | flog_err( | |
3473 | EC_BGP_ES_CREATE, | |
3474 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3475 | bgp->vrf_id, vni, es->esi_str); | |
3476 | return -1; | |
3477 | } | |
3478 | ||
3479 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3480 | zlog_debug("add local es %s evi %u", | |
3481 | es->esi_str, vni); | |
3482 | ||
3483 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3484 | ||
3485 | if (es_evi) { | |
3486 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3487 | /* dup */ | |
3488 | return 0; | |
3489 | } else { | |
3490 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3491 | if (!es_evi) | |
3492 | return -1; | |
3493 | } | |
3494 | ||
3495 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3496 | ||
3497 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3498 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3499 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3500 | es->originator_ip); | |
c44ab6f1 AK |
3501 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3502 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3503 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3504 | bgp->vrf_id, es->esi_str, vni); | |
3505 | } | |
3506 | ||
3507 | /* update EAD-ES */ | |
3508 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3509 | &es->esi, es->originator_ip); | |
74be8313 | 3510 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3511 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3512 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3513 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3514 | bgp->vrf_id, es->esi_str, vni); | |
3515 | } | |
3516 | ||
3517 | return 0; | |
3518 | } | |
3519 | ||
3520 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3521 | * ES-EVI is implicity created on first VTEP's reference. | |
3522 | */ | |
3523 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3524 | const struct prefix_evpn *p) | |
3525 | { | |
3526 | char buf[ESI_STR_LEN]; | |
3527 | struct bgp_evpn_es *es; | |
3528 | struct bgp_evpn_es_evi *es_evi; | |
3529 | bool ead_es; | |
3530 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3531 | ||
3532 | if (!vpn) | |
3533 | /* local EAD-ES need not be sent back to zebra */ | |
3534 | return 0; | |
3535 | ||
3536 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3537 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3538 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3539 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3540 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3541 | |
3542 | es = bgp_evpn_es_find(esi); | |
3543 | if (!es) { | |
3544 | es = bgp_evpn_es_new(bgp, esi); | |
3545 | if (!es) { | |
3546 | flog_err(EC_BGP_ES_CREATE, | |
3547 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3548 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3549 | return -1; | |
3550 | } | |
3551 | } | |
3552 | ||
3553 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3554 | if (!es_evi) { | |
3555 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3556 | if (!es_evi) { | |
45a859f1 | 3557 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3558 | return -1; |
3559 | } | |
3560 | } | |
3561 | ||
3562 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3563 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3564 | ead_es); | |
3565 | ||
3566 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3567 | return 0; | |
3568 | } | |
3569 | ||
3570 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3571 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3572 | */ | |
3573 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3574 | const struct prefix_evpn *p) | |
3575 | { | |
3576 | char buf[ESI_STR_LEN]; | |
3577 | struct bgp_evpn_es *es; | |
3578 | struct bgp_evpn_es_evi *es_evi; | |
3579 | bool ead_es; | |
3580 | ||
3581 | if (!vpn) | |
3582 | /* local EAD-ES need not be sent back to zebra */ | |
3583 | return 0; | |
3584 | ||
3585 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3586 | zlog_debug( |
3587 | "del remote %s es %s evi %u vtep %pI4", | |
3588 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3589 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3590 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3591 | |
3592 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3593 | if (!es) { |
3594 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3595 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3596 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3597 | : "ead-evi", | |
3598 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3599 | sizeof(buf)), | |
3600 | vpn->vni, | |
3601 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3602 | return 0; |
2eef4f20 | 3603 | } |
c44ab6f1 | 3604 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3605 | if (!es_evi) { |
3606 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3607 | zlog_debug( | |
3608 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3609 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3610 | : "ead-evi", | |
3611 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3612 | sizeof(buf)), | |
3613 | vpn->vni, | |
3614 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3615 | return 0; |
2eef4f20 | 3616 | } |
c44ab6f1 AK |
3617 | |
3618 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3619 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3620 | ead_es); | |
3621 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3622 | return 0; | |
3623 | } | |
3624 | ||
333ad64b AK |
3625 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3626 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3627 | { | |
3628 | struct listnode *node = NULL; | |
3629 | struct listnode *nnode = NULL; | |
3630 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3631 | struct bgp *bgp; | |
3632 | ||
3633 | bgp = bgp_get_evpn(); | |
3634 | if (!bgp) | |
3635 | return; | |
3636 | ||
3637 | /* delete all VTEPs */ | |
3638 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3639 | evi_vtep)) { | |
3640 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3641 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3642 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3643 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3644 | } | |
3645 | /* delete the EVI */ | |
3646 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3647 | } | |
3648 | ||
c44ab6f1 AK |
3649 | /* Initialize the ES tables maintained per-L2_VNI */ |
3650 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3651 | { | |
3652 | /* Initialize the ES-EVI RB tree */ | |
3653 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3654 | ||
3655 | /* Initialize the local list maintained for quick walks by type */ | |
3656 | vpn->local_es_evi_list = list_new(); | |
3657 | listset_app_node_mem(vpn->local_es_evi_list); | |
3658 | } | |
3659 | ||
3660 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3661 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3662 | { | |
3663 | struct bgp_evpn_es_evi *es_evi; | |
3664 | struct bgp_evpn_es_evi *es_evi_next; | |
3665 | ||
3666 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3667 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3668 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3669 | if (es_evi) | |
3670 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3671 | } |
3672 | ||
3673 | list_delete(&vpn->local_es_evi_list); | |
3674 | } | |
3675 | ||
3676 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3677 | struct bgp_evpn_es_evi *es_evi, |
3678 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3679 | { |
3680 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3681 | struct listnode *node; | |
3682 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3683 | bool first = true; | |
ec779825 | 3684 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3685 | |
3686 | vtep_str[0] = '\0'; | |
3687 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3688 | vtep_flag_str[0] = '\0'; | |
3689 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3690 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3691 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3692 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3693 | |
9e0c2fd1 AK |
3694 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3695 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3696 | if (first) | |
c44ab6f1 | 3697 | first = false; |
9e0c2fd1 AK |
3698 | else |
3699 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3700 | strlcat(vtep_str, |
ec779825 AK |
3701 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3702 | sizeof(ip_buf)), | |
23d0a753 | 3703 | vtep_str_size); |
9e0c2fd1 AK |
3704 | strlcat(vtep_str, "(", vtep_str_size); |
3705 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3706 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3707 | } |
3708 | ||
3709 | return vtep_str; | |
3710 | } | |
3711 | ||
3712 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3713 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3714 | { | |
3715 | json_object *json_vtep_entry; | |
3716 | json_object *json_flags; | |
ec779825 | 3717 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3718 | |
3719 | json_vtep_entry = json_object_new_object(); | |
3720 | ||
ec779825 AK |
3721 | json_object_string_add( |
3722 | json_vtep_entry, "vtep_ip", | |
3723 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3724 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3725 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3726 | json_flags = json_object_new_array(); | |
3727 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3728 | json_array_string_add(json_flags, "ead-per-es"); | |
3729 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3730 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3731 | json_object_object_add(json_vtep_entry, |
3732 | "flags", json_flags); | |
3733 | } | |
3734 | ||
3735 | json_object_array_add(json_vteps, | |
3736 | json_vtep_entry); | |
3737 | } | |
3738 | ||
3739 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3740 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3741 | { | |
3742 | struct listnode *node; | |
3743 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3744 | ||
3745 | if (json) { | |
3746 | json_object *json_vteps; | |
3747 | json_object *json_types; | |
3748 | ||
3749 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3750 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3751 | ||
3752 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3753 | BGP_EVPNES_EVI_REMOTE)) { | |
3754 | json_types = json_object_new_array(); | |
3755 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3756 | json_array_string_add(json_types, "local"); | |
3757 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3758 | json_array_string_add(json_types, "remote"); | |
3759 | json_object_object_add(json, "type", json_types); | |
3760 | } | |
3761 | ||
3762 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3763 | json_vteps = json_object_new_array(); | |
3764 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3765 | node, evi_vtep)) { | |
3766 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3767 | evi_vtep); | |
3768 | } | |
3769 | json_object_object_add(json, "vteps", json_vteps); | |
3770 | } | |
3771 | } else { | |
3772 | char type_str[4]; | |
3773 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3774 | ||
3775 | type_str[0] = '\0'; | |
3776 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3777 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3778 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3779 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3780 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3781 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3782 | |
9e0c2fd1 | 3783 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3784 | |
3785 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3786 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3787 | type_str, vtep_str); | |
3788 | } | |
3789 | } | |
3790 | ||
3791 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3792 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3793 | { | |
3794 | if (json) { | |
3795 | json_object *json_flags; | |
3796 | ||
3797 | /* Add the "brief" info first */ | |
3798 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3799 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3800 | json_flags = json_object_new_array(); | |
3801 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3802 | json_object_object_add(json, "flags", json_flags); | |
3803 | } | |
3804 | } else { | |
3805 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3806 | char type_str[4]; | |
3807 | ||
3808 | type_str[0] = '\0'; | |
3809 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3810 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3811 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3812 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3813 | |
9e0c2fd1 | 3814 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3815 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3816 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3817 | |
3818 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3819 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3820 | vty_out(vty, " Type: %s\n", type_str); | |
3821 | vty_out(vty, " Inconsistencies: %s\n", | |
3822 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3823 | "es-vtep-mismatch":"-"); | |
3824 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3825 | vty_out(vty, "\n"); | |
3826 | } | |
3827 | } | |
3828 | ||
3829 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3830 | json_object *json_array, bool detail) | |
3831 | { | |
3832 | struct bgp_evpn_es_evi *es_evi; | |
3833 | json_object *json = NULL; | |
3834 | ||
3835 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3836 | if (json_array) | |
3837 | /* create a separate json object for each ES */ | |
3838 | json = json_object_new_object(); | |
3839 | if (detail) | |
3840 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3841 | else | |
3842 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3843 | /* add ES to the json array */ | |
3844 | if (json_array) | |
3845 | json_object_array_add(json_array, json); | |
3846 | } | |
3847 | } | |
3848 | ||
3849 | struct es_evi_show_ctx { | |
3850 | struct vty *vty; | |
3851 | json_object *json; | |
3852 | int detail; | |
3853 | }; | |
3854 | ||
3855 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3856 | void *ctxt) | |
3857 | { | |
3858 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3859 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3860 | ||
3861 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3862 | } | |
3863 | ||
3864 | /* Display all ES EVIs */ | |
3865 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3866 | { | |
3867 | json_object *json_array = NULL; | |
3868 | struct es_evi_show_ctx wctx; | |
3869 | struct bgp *bgp; | |
3870 | ||
3871 | if (uj) { | |
3872 | /* create an array of ES-EVIs */ | |
3873 | json_array = json_object_new_array(); | |
3874 | } | |
3875 | ||
3876 | wctx.vty = vty; | |
3877 | wctx.json = json_array; | |
3878 | wctx.detail = detail; | |
3879 | ||
3880 | bgp = bgp_get_evpn(); | |
3881 | ||
3882 | if (!json_array && !detail) { | |
3883 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3884 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3885 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3886 | "VNI", "ESI", "Flags", "VTEPs"); | |
3887 | } | |
3888 | ||
3889 | if (bgp) | |
3890 | hash_iterate(bgp->vnihash, | |
3891 | (void (*)(struct hash_bucket *, | |
3892 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3893 | &wctx); | |
3894 | if (uj) { | |
3895 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3896 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3897 | json_object_free(json_array); | |
3898 | } | |
3899 | } | |
3900 | ||
3901 | /* Display specific ES EVI */ | |
3902 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3903 | bool uj, bool detail) | |
3904 | { | |
3905 | struct bgpevpn *vpn = NULL; | |
3906 | json_object *json_array = NULL; | |
3907 | struct bgp *bgp; | |
3908 | ||
3909 | if (uj) { | |
3910 | /* create an array of ES-EVIs */ | |
3911 | json_array = json_object_new_array(); | |
3912 | } | |
3913 | ||
3914 | bgp = bgp_get_evpn(); | |
3915 | if (bgp) | |
3916 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3917 | ||
3918 | if (vpn) { | |
3919 | if (!json_array && !detail) { | |
3920 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3921 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3922 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3923 | "VNI", "ESI", "Flags", "VTEPs"); | |
3924 | } | |
3925 | ||
3926 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3927 | } else { | |
3928 | if (!uj) | |
3929 | vty_out(vty, "VNI not found\n"); | |
3930 | } | |
3931 | ||
3932 | if (uj) { | |
3933 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3934 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3935 | json_object_free(json_array); | |
3936 | } | |
3937 | } | |
3938 | ||
3939 | /***************************************************************************** | |
3940 | * Ethernet Segment Consistency checks | |
3941 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3942 | * an inconsistency is detected it is simply logged (and displayed via | |
3943 | * show commands) at this point. A more drastic action can be executed (based | |
3944 | * on user config) in the future. | |
3945 | */ | |
8fc2ffb3 AK |
3946 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3947 | { | |
3948 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3949 | return; | |
3950 | ||
3951 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3952 | zlog_debug("periodic consistency checking started"); | |
3953 | ||
3954 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3955 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3956 | &bgp_mh_info->t_cons_check); | |
3957 | } | |
3958 | ||
c44ab6f1 AK |
3959 | /* queue up the es for background consistency checks */ |
3960 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3961 | { | |
3962 | if (!bgp_mh_info->consistency_checking) | |
3963 | /* consistency checking is not enabled */ | |
3964 | return; | |
3965 | ||
3966 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3967 | /* already queued for consistency checking */ | |
3968 | return; | |
3969 | ||
8fc2ffb3 AK |
3970 | /* start the periodic timer for consistency checks if it is not |
3971 | * already running */ | |
3972 | bgp_evpn_es_cons_checks_timer_start(); | |
3973 | ||
c44ab6f1 AK |
3974 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3975 | listnode_init(&es->pend_es_listnode, es); | |
3976 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3977 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3978 | &es->pend_es_listnode); | |
3979 | } | |
3980 | ||
3981 | /* pull the ES from the consistency check list */ | |
3982 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3983 | { | |
3984 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3985 | return; | |
3986 | ||
3987 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3988 | list_delete_node(bgp_mh_info->pend_es_list, | |
3989 | &es->pend_es_listnode); | |
3990 | } | |
3991 | ||
3992 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3993 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3994 | struct bgp_evpn_es_evi *es_evi) | |
3995 | { | |
3996 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3997 | struct listnode *node; | |
3998 | uint32_t vtep_cnt = 0; | |
3999 | ||
4000 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
4001 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4002 | ++vtep_cnt; | |
4003 | } | |
4004 | ||
4005 | return vtep_cnt; | |
4006 | } | |
4007 | ||
4008 | /* Number of active VTEPs associated with the ES */ | |
4009 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
4010 | { | |
4011 | struct listnode *node; | |
4012 | uint32_t vtep_cnt = 0; | |
4013 | struct bgp_evpn_es_vtep *es_vtep; | |
4014 | ||
4015 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
4016 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4017 | ++vtep_cnt; | |
4018 | } | |
4019 | ||
4020 | return vtep_cnt; | |
4021 | } | |
4022 | ||
4023 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
4024 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
4025 | { | |
4026 | struct listnode *node; | |
4027 | struct bgp_evpn_es_vtep *next_es_vtep; | |
4028 | ||
4029 | if (es_vtep) | |
4030 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
4031 | else | |
4032 | node = listhead(es->es_vtep_list); | |
4033 | ||
4034 | for (; node; node = listnextnode_unchecked(node)) { | |
4035 | next_es_vtep = listgetdata(node); | |
4036 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4037 | return next_es_vtep; | |
4038 | } | |
4039 | ||
4040 | return NULL; | |
4041 | } | |
4042 | ||
4043 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
4044 | struct bgp_evpn_es_evi *es_evi, | |
4045 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
4046 | { | |
4047 | struct listnode *node; | |
4048 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
4049 | ||
4050 | if (evi_vtep) | |
4051 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
4052 | else | |
4053 | node = listhead(es_evi->es_evi_vtep_list); | |
4054 | ||
4055 | for (; node; node = listnextnode_unchecked(node)) { | |
4056 | next_evi_vtep = listgetdata(node); | |
4057 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4058 | return next_evi_vtep; | |
4059 | } | |
4060 | ||
4061 | return NULL; | |
4062 | } | |
4063 | ||
4064 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
4065 | { | |
4066 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
4067 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4068 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
4069 | es_evi->es->esi_str, | |
4070 | es_evi->vpn->vni); | |
4071 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4072 | ||
4073 | /* update parent ES with the incosistency setting */ | |
4074 | if (!es_evi->es->incons_evi_vtep_cnt && | |
4075 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4076 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
4077 | es_evi->es->esi_str); | |
4078 | ++es_evi->es->incons_evi_vtep_cnt; | |
4079 | SET_FLAG(es_evi->es->inconsistencies, | |
4080 | BGP_EVPNES_INCONS_VTEP_LIST); | |
4081 | } | |
4082 | } | |
4083 | ||
4084 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
4085 | { | |
4086 | int proc_cnt = 0; | |
4087 | int es_active_vtep_cnt; | |
4088 | int evi_active_vtep_cnt; | |
4089 | struct bgp_evpn_es_evi *es_evi; | |
4090 | struct listnode *evi_node; | |
4091 | struct bgp_evpn_es_vtep *es_vtep; | |
4092 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4093 | ||
4094 | /* reset the inconsistencies and re-evaluate */ | |
4095 | es->incons_evi_vtep_cnt = 0; | |
4096 | es->inconsistencies = 0; | |
4097 | ||
4098 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
4099 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
4100 | evi_node, es_evi)) { | |
4101 | ++proc_cnt; | |
4102 | ||
4103 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
4104 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4105 | ||
4106 | evi_active_vtep_cnt = | |
4107 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
4108 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
4109 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4110 | continue; | |
4111 | } | |
4112 | ||
4113 | if (!es_active_vtep_cnt) | |
4114 | continue; | |
4115 | ||
4116 | es_vtep = NULL; | |
4117 | evi_vtep = NULL; | |
4118 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
4119 | es, es_vtep))) { | |
4120 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
4121 | evi_vtep); | |
4122 | if (!evi_vtep) { | |
4123 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4124 | break; | |
4125 | } | |
4126 | if (es_vtep->vtep_ip.s_addr != | |
4127 | evi_vtep->vtep_ip.s_addr) { | |
4128 | /* inconsistency detected; set it and move | |
4129 | * to the next evi | |
4130 | */ | |
4131 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4132 | break; | |
4133 | } | |
4134 | } | |
4135 | } | |
4136 | ||
4137 | return proc_cnt; | |
4138 | } | |
4139 | ||
4140 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
4141 | { | |
4142 | int proc_cnt = 0; | |
4143 | int es_cnt = 0; | |
4144 | struct listnode *node; | |
4145 | struct listnode *nextnode; | |
4146 | struct bgp_evpn_es *es; | |
4147 | ||
4148 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
4149 | node, nextnode, es)) { | |
4150 | ++es_cnt; | |
4151 | ++proc_cnt; | |
4152 | /* run consistency checks on the ES and remove it from the | |
4153 | * pending list | |
4154 | */ | |
4155 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4156 | bgp_evpn_es_cons_checks_pend_del(es); | |
4157 | if (proc_cnt > 500) | |
4158 | break; | |
4159 | } | |
4160 | ||
4161 | /* restart the timer */ | |
4162 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4163 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4164 | &bgp_mh_info->t_cons_check); | |
4165 | ||
4166 | return 0; | |
4167 | } | |
4168 | ||
090efa2f AK |
4169 | /***************************************************************************** |
4170 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4171 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4172 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4173 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4174 | * | |
4175 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4176 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4177 | * RMAC info). | |
4178 | ****************************************************************************/ | |
4179 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4180 | { | |
4181 | struct stream *s; | |
4182 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4183 | ||
4184 | /* Check socket. */ | |
4185 | if (!zclient || zclient->sock < 0) | |
4186 | return; | |
4187 | ||
4188 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4189 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4190 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4191 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4192 | add ? "adding" : "deleting", nh->nh_str); | |
4193 | return; | |
4194 | } | |
4195 | ||
4196 | s = zclient->obuf; | |
4197 | stream_reset(s); | |
4198 | ||
4199 | zclient_create_header( | |
4200 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4201 | bgp_vrf->vrf_id); | |
4202 | stream_putl(s, bgp_vrf->vrf_id); | |
4203 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4204 | if (add) | |
4205 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4206 | ||
4207 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4208 | ||
4209 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4210 | if (add) | |
4211 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
4212 | nh->bgp_vrf->name, nh->nh_str, &nh->rmac); | |
4213 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4214 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
4215 | nh->bgp_vrf->name, nh->nh_str); | |
4216 | } | |
4217 | ||
23aa35ad AK |
4218 | frrtrace(2, frr_bgp, evpn_mh_nh_rmac_zsend, add, nh); |
4219 | ||
090efa2f AK |
4220 | zclient_send_message(zclient); |
4221 | } | |
4222 | ||
4223 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4224 | { | |
4225 | if (add && !is_zero_mac(&nh->rmac)) { | |
4226 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4227 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4228 | } else { | |
4229 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4230 | return; | |
4231 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4232 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4233 | } | |
4234 | } | |
4235 | ||
4236 | static void *bgp_evpn_nh_alloc(void *p) | |
4237 | { | |
4238 | struct bgp_evpn_nh *tmp_n = p; | |
4239 | struct bgp_evpn_nh *n; | |
4240 | ||
4241 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4242 | *n = *tmp_n; | |
4243 | ||
4244 | return ((void *)n); | |
4245 | } | |
4246 | ||
4247 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4248 | struct ipaddr *ip) | |
4249 | { | |
4250 | struct bgp_evpn_nh tmp; | |
4251 | struct bgp_evpn_nh *n; | |
4252 | ||
4253 | memset(&tmp, 0, sizeof(tmp)); | |
4254 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4255 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4256 | ||
4257 | return n; | |
4258 | } | |
4259 | ||
4260 | /* Add nexthop entry - implicitly created on first path reference */ | |
4261 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4262 | struct ipaddr *ip, | |
4263 | struct bgp_path_info *pi) | |
4264 | { | |
4265 | struct bgp_evpn_nh tmp_n; | |
4266 | struct bgp_evpn_nh *n = NULL; | |
4267 | ||
4268 | memset(&tmp_n, 0, sizeof(struct bgp_evpn_nh)); | |
4269 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
4270 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4271 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4272 | n->bgp_vrf = bgp_vrf; | |
4273 | ||
4274 | n->pi_list = list_new(); | |
4275 | listset_app_node_mem(n->pi_list); | |
4276 | ||
4277 | /* Setup ref_pi when the nh is created */ | |
4278 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4279 | n->ref_pi = pi; | |
4280 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4281 | } | |
4282 | ||
4283 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4284 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", n->bgp_vrf->name, | |
4285 | n->nh_str, &n->rmac); | |
4286 | bgp_evpn_nh_zebra_update(n, true); | |
4287 | return n; | |
4288 | } | |
4289 | ||
4290 | /* Delete nexthop entry if there are no paths referencing it */ | |
4291 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4292 | { | |
4293 | struct bgp_evpn_nh *tmp_n; | |
4294 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4295 | ||
4296 | if (listcount(n->pi_list)) | |
4297 | return; | |
4298 | ||
4299 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4300 | zlog_debug("evpn vrf %s nh %s del to zebra", bgp_vrf->name, | |
4301 | n->nh_str); | |
4302 | ||
4303 | bgp_evpn_nh_zebra_update(n, false); | |
4304 | list_delete(&n->pi_list); | |
4305 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4306 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4307 | } | |
4308 | ||
4309 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) | |
4310 | { | |
4311 | const struct bgp_evpn_nh *n = p; | |
4312 | const struct ipaddr *ip = &n->ip; | |
4313 | ||
4314 | if (IS_IPADDR_V4(ip)) | |
4315 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4316 | ||
4317 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4318 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4319 | } | |
4320 | ||
4321 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4322 | { | |
4323 | const struct bgp_evpn_nh *n1 = p1; | |
4324 | const struct bgp_evpn_nh *n2 = p2; | |
4325 | ||
4326 | if (n1 == NULL && n2 == NULL) | |
4327 | return true; | |
4328 | ||
4329 | if (n1 == NULL || n2 == NULL) | |
4330 | return false; | |
4331 | ||
4332 | return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0); | |
4333 | } | |
4334 | ||
4335 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4336 | { | |
4337 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4338 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name); | |
4339 | bgp_vrf->evpn_nh_table = hash_create( | |
4340 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4341 | } | |
4342 | ||
4343 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4344 | { | |
4345 | struct listnode *node; | |
4346 | struct listnode *nnode; | |
4347 | struct bgp_path_evpn_nh_info *nh_info; | |
4348 | ||
4349 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4350 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name, | |
4351 | nh->nh_str); | |
4352 | ||
4353 | /* force flush paths */ | |
4354 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4355 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4356 | } | |
4357 | ||
4358 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4359 | { | |
4360 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4361 | ||
4362 | bgp_evpn_nh_flush_entry(nh); | |
4363 | } | |
4364 | ||
4365 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4366 | { | |
4367 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4368 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name); | |
4369 | hash_iterate( | |
4370 | bgp_vrf->evpn_nh_table, | |
4371 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4372 | NULL); | |
4373 | hash_free(bgp_vrf->evpn_nh_table); | |
4374 | bgp_vrf->evpn_nh_table = NULL; | |
4375 | } | |
4376 | ||
4377 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4378 | { | |
4379 | struct listnode *node; | |
4380 | struct bgp_path_info *pi; | |
4381 | struct bgp_path_evpn_nh_info *nh_info; | |
4382 | ||
4383 | if (nh->ref_pi) | |
4384 | return; | |
4385 | ||
4386 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4387 | pi = nh_info->pi; | |
4388 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4389 | continue; | |
4390 | ||
4391 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4392 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
4393 | nh->bgp_vrf->name, nh->nh_str); | |
4394 | nh->ref_pi = pi; | |
4395 | /* If we have a new pi copy rmac from it and update | |
4396 | * zebra if the new rmac is different | |
4397 | */ | |
4398 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4399 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4400 | bgp_evpn_nh_zebra_update(nh, true); | |
4401 | } | |
4402 | break; | |
4403 | } | |
4404 | } | |
4405 | ||
4406 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4407 | struct bgp_path_info *pi) | |
4408 | { | |
4409 | if (nh->ref_pi != pi) | |
4410 | return; | |
4411 | ||
4412 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4413 | zlog_debug("evpn vrf %s nh %s ref_pi clear", nh->bgp_vrf->name, | |
4414 | nh->nh_str); | |
4415 | nh->ref_pi = NULL; | |
4416 | /* try to find another ref_pi */ | |
4417 | bgp_evpn_nh_update_ref_pi(nh); | |
4418 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4419 | if (!nh->ref_pi) { | |
4420 | memset(&nh->rmac, 0, ETH_ALEN); | |
4421 | bgp_evpn_nh_zebra_update(nh, true); | |
4422 | } | |
4423 | } | |
4424 | ||
4425 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4426 | { | |
4427 | bgp_evpn_path_nh_unlink(nh_info); | |
4428 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4429 | } | |
4430 | ||
4431 | static struct bgp_path_evpn_nh_info * | |
4432 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4433 | { | |
4434 | struct bgp_path_info_extra *e; | |
4435 | struct bgp_path_mh_info *mh_info; | |
4436 | struct bgp_path_evpn_nh_info *nh_info; | |
4437 | ||
4438 | e = bgp_path_info_extra_get(pi); | |
4439 | ||
4440 | /* If mh_info doesn't exist allocate it */ | |
4441 | mh_info = e->mh_info; | |
4442 | if (!mh_info) | |
4443 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4444 | sizeof(struct bgp_path_mh_info)); | |
4445 | ||
4446 | /* If nh_info doesn't exist allocate it */ | |
4447 | nh_info = mh_info->nh_info; | |
4448 | if (!nh_info) { | |
4449 | mh_info->nh_info = nh_info = | |
4450 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4451 | sizeof(struct bgp_path_evpn_nh_info)); | |
4452 | nh_info->pi = pi; | |
4453 | } | |
4454 | ||
4455 | return nh_info; | |
4456 | } | |
4457 | ||
4458 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4459 | { | |
4460 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4461 | struct bgp_path_info *pi; | |
4462 | char prefix_buf[PREFIX_STRLEN]; | |
4463 | ||
4464 | if (!nh) | |
4465 | return; | |
4466 | ||
4467 | pi = nh_info->pi; | |
4468 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4469 | zlog_debug("path %s unlinked from nh %s %s", | |
4470 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4471 | sizeof(prefix_buf)) | |
4472 | : "", | |
4473 | nh->bgp_vrf->name, nh->nh_str); | |
4474 | ||
4475 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4476 | ||
4477 | nh_info->nh = NULL; | |
4478 | ||
4479 | /* check if the ref_pi need to be updated */ | |
4480 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4481 | ||
4482 | /* if there are no other references against the nh it | |
4483 | * needs to be freed | |
4484 | */ | |
4485 | bgp_evpn_nh_del(nh); | |
4486 | ||
4487 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4488 | * along with the path. | |
4489 | */ | |
4490 | } | |
4491 | ||
4492 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4493 | { | |
4494 | struct bgp_path_evpn_nh_info *nh_info; | |
4495 | struct bgp_evpn_nh *nh; | |
090efa2f AK |
4496 | struct ipaddr ip; |
4497 | ||
4498 | /* EVPN nexthop setup in bgp has been turned off */ | |
4499 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4500 | return; | |
4501 | ||
4502 | if (!bgp_vrf->evpn_nh_table) { | |
4503 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4504 | zlog_debug("path %pFX linked to vrf %s failed", |
4505 | &pi->net->p, bgp_vrf->name); | |
090efa2f AK |
4506 | return; |
4507 | } | |
4508 | ||
4509 | nh_info = (pi->extra && pi->extra->mh_info) | |
4510 | ? pi->extra->mh_info->nh_info | |
4511 | : NULL; | |
4512 | ||
4513 | /* if NHG is not being used for this path we don't need to manage the | |
4514 | * nexthops in bgp (they are managed by zebra instead) | |
4515 | */ | |
4516 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4517 | if (nh_info) | |
4518 | bgp_evpn_path_nh_unlink(nh_info); | |
4519 | return; | |
4520 | } | |
4521 | ||
4522 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4523 | if (!nh_info) | |
4524 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4525 | ||
4526 | /* find-create nh */ | |
4527 | memset(&ip, 0, sizeof(ip)); | |
4528 | if (pi->net->p.family == AF_INET6) { | |
4529 | SET_IPADDR_V6(&ip); | |
4530 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4531 | sizeof(ip.ipaddr_v6)); | |
4532 | } else { | |
4533 | SET_IPADDR_V4(&ip); | |
4534 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4535 | } | |
4536 | ||
4537 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4538 | if (!nh) | |
4539 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4540 | ||
4541 | /* dup check */ | |
4542 | if (nh_info->nh == nh) { | |
4543 | /* Check if any of the paths are now valid */ | |
4544 | bgp_evpn_nh_update_ref_pi(nh); | |
4545 | return; | |
4546 | } | |
4547 | ||
4548 | /* unlink old nh if any */ | |
4549 | bgp_evpn_path_nh_unlink(nh_info); | |
4550 | ||
4551 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4552 | zlog_debug("path %pFX linked to nh %s %s", &pi->net->p, |
4553 | nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4554 | |
4555 | /* link mac-ip path to the new nh */ | |
4556 | nh_info->nh = nh; | |
4557 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4558 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4559 | /* If a new valid path got linked to the nh see if can get the rmac | |
4560 | * from it | |
4561 | */ | |
4562 | bgp_evpn_nh_update_ref_pi(nh); | |
4563 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4564 | if (!nh->ref_pi) | |
4565 | zlog_debug( | |
70545a29 AK |
4566 | "path %pFX linked to nh %s %s with no valid pi", |
4567 | &pi->net->p, nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4568 | } |
4569 | } | |
4570 | ||
4571 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4572 | { | |
4573 | struct bgp_path_evpn_nh_info *nh_info; | |
4574 | ||
4575 | nh_info = (pi->extra && pi->extra->mh_info) | |
4576 | ? pi->extra->mh_info->nh_info | |
4577 | : NULL; | |
4578 | ||
4579 | if (!nh_info) | |
4580 | return; | |
4581 | ||
4582 | bgp_evpn_path_nh_unlink(nh_info); | |
4583 | } | |
4584 | ||
4585 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4586 | { | |
4587 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4588 | } | |
4589 | ||
4590 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4591 | json_object *json_array) | |
4592 | { | |
4593 | json_object *json = NULL; | |
4594 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4595 | char prefix_buf[PREFIX_STRLEN]; | |
4596 | ||
4597 | if (json_array) | |
4598 | /* create a separate json object for each ES */ | |
4599 | json = json_object_new_object(); | |
4600 | ||
4601 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4602 | if (nh->ref_pi && nh->ref_pi->net) | |
4603 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4604 | else | |
4605 | prefix_buf[0] = '\0'; | |
4606 | if (json) { | |
4607 | json_object_string_add(json, "vrf", nh->bgp_vrf->name); | |
4608 | json_object_string_add(json, "ip", nh->nh_str); | |
4609 | json_object_string_add(json, "rmac", mac_buf); | |
4610 | json_object_string_add(json, "basePath", prefix_buf); | |
4611 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4612 | } else { | |
4613 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", nh->bgp_vrf->name, | |
4614 | nh->nh_str, mac_buf, listcount(nh->pi_list), | |
4615 | prefix_buf); | |
4616 | } | |
4617 | ||
4618 | /* add ES to the json array */ | |
4619 | if (json_array) | |
4620 | json_object_array_add(json_array, json); | |
4621 | } | |
4622 | ||
4623 | struct nh_show_ctx { | |
4624 | struct vty *vty; | |
4625 | json_object *json; | |
4626 | }; | |
4627 | ||
4628 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4629 | { | |
4630 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4631 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4632 | ||
4633 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4634 | } | |
4635 | ||
4636 | /* Display all evpn nexthops */ | |
4637 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4638 | { | |
4639 | json_object *json_array = NULL; | |
4640 | struct bgp *bgp_vrf; | |
4641 | struct listnode *node; | |
4642 | struct nh_show_ctx wctx; | |
4643 | ||
4644 | if (uj) { | |
4645 | /* create an array of nexthops */ | |
4646 | json_array = json_object_new_array(); | |
4647 | } else { | |
4648 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4649 | "RMAC", "#Paths", "Base Path"); | |
4650 | } | |
4651 | ||
4652 | wctx.vty = vty; | |
4653 | wctx.json = json_array; | |
4654 | ||
4655 | /* walk through all vrfs */ | |
4656 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4657 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4658 | (void (*)(struct hash_bucket *, | |
4659 | void *))bgp_evpn_nh_show_hash_cb, | |
4660 | &wctx); | |
4661 | } | |
4662 | ||
4663 | /* print the array of json-ESs */ | |
4664 | if (uj) { | |
4665 | vty_out(vty, "%s\n", | |
4666 | json_object_to_json_string_ext( | |
4667 | json_array, JSON_C_TO_STRING_PRETTY)); | |
4668 | json_object_free(json_array); | |
4669 | } | |
4670 | } | |
4671 | ||
c44ab6f1 AK |
4672 | /*****************************************************************************/ |
4673 | void bgp_evpn_mh_init(void) | |
4674 | { | |
4675 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4676 | ||
4677 | /* setup ES tables */ | |
4678 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4679 | /* local ES list */ | |
4680 | bgp_mh_info->local_es_list = list_new(); | |
4681 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4682 | /* list of ESs with pending processing */ | |
4683 | bgp_mh_info->pend_es_list = list_new(); | |
4684 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4685 | ||
fe8293c3 AK |
4686 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4687 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
4688 | ||
c44ab6f1 AK |
4689 | /* config knobs - XXX add cli to control it */ |
4690 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4691 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
4692 | bgp_mh_info->install_l3nhg = false; |
4693 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 4694 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4695 | bgp_mh_info->bgp_evpn_nh_setup = true; |
c44ab6f1 | 4696 | |
c44ab6f1 AK |
4697 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4698 | } | |
4699 | ||
4700 | void bgp_evpn_mh_finish(void) | |
4701 | { | |
4702 | struct bgp_evpn_es *es; | |
4703 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4704 | |
45a859f1 AK |
4705 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4706 | zlog_debug("evpn mh finish"); | |
4707 | ||
4708 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4709 | es_next) { | |
d57e0c05 | 4710 | bgp_evpn_es_local_info_clear(es, true); |
c44ab6f1 | 4711 | } |
8fc2ffb3 AK |
4712 | if (bgp_mh_info->t_cons_check) |
4713 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4714 | list_delete(&bgp_mh_info->local_es_list); |
4715 | list_delete(&bgp_mh_info->pend_es_list); | |
4716 | ||
4717 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4718 | } | |
acd1d9bc AD |
4719 | |
4720 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4721 | void bgp_evpn_switch_ead_evi_rx(void) | |
4722 | { | |
4723 | struct bgp *bgp; | |
4724 | struct bgp_evpn_es *es; | |
4725 | struct bgp_evpn_es_evi *es_evi; | |
4726 | struct listnode *evi_node = NULL; | |
4727 | struct listnode *evi_next = NULL; | |
4728 | struct bgp_evpn_es_evi_vtep *vtep; | |
4729 | struct listnode *vtep_node = NULL; | |
4730 | struct listnode *vtep_next = NULL; | |
4731 | ||
4732 | bgp = bgp_get_evpn(); | |
4733 | if (!bgp) | |
4734 | return; | |
4735 | ||
4736 | /* | |
4737 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4738 | * is active. | |
4739 | */ | |
4740 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4741 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4742 | continue; | |
4743 | ||
4744 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4745 | es_evi)) { | |
4746 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4747 | continue; | |
4748 | ||
4749 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4750 | vtep_node, vtep_next, vtep)) | |
4751 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4752 | } | |
4753 | } | |
4754 | } |