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185fb14a AK |
1 | /* EVPN Multihoming procedures |
2 | * | |
3 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
c44ab6f1 | 4 | * Anuradha Karuppiah |
185fb14a AK |
5 | * |
6 | * This file is part of FRR. | |
7 | * | |
8 | * FRRouting is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * FRRouting is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include "command.h" | |
23 | #include "filter.h" | |
24 | #include "prefix.h" | |
25 | #include "log.h" | |
26 | #include "memory.h" | |
27 | #include "stream.h" | |
28 | #include "hash.h" | |
29 | #include "jhash.h" | |
30 | #include "zclient.h" | |
31 | ||
23d0a753 DA |
32 | #include "lib/printfrr.h" |
33 | ||
185fb14a AK |
34 | #include "bgpd/bgp_attr_evpn.h" |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
40 | #include "bgpd/bgp_evpn.h" | |
41 | #include "bgpd/bgp_evpn_private.h" | |
42 | #include "bgpd/bgp_evpn_mh.h" | |
43 | #include "bgpd/bgp_ecommunity.h" | |
44 | #include "bgpd/bgp_encap_types.h" | |
45 | #include "bgpd/bgp_debug.h" | |
46 | #include "bgpd/bgp_errors.h" | |
47 | #include "bgpd/bgp_aspath.h" | |
48 | #include "bgpd/bgp_zebra.h" | |
49 | #include "bgpd/bgp_addpath.h" | |
c44ab6f1 | 50 | #include "bgpd/bgp_label.h" |
c589d847 | 51 | #include "bgpd/bgp_nht.h" |
6348981a | 52 | #include "bgpd/bgp_mpath.h" |
c44ab6f1 AK |
53 | |
54 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
55 | struct bgp_evpn_es *es); | |
56 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
57 | struct bgp_evpn_es *es); | |
58 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
59 | struct bgp_evpn_es *es, |
60 | struct in_addr vtep_ip, | |
61 | bool esr, uint8_t df_alg, | |
62 | uint16_t df_pref); | |
c44ab6f1 AK |
63 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, |
64 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr); | |
65 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es); | |
66 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es); | |
333ad64b AK |
67 | static struct bgp_evpn_es_evi * |
68 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi); | |
c589d847 AK |
69 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es); |
70 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es); | |
26c03e43 AK |
71 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi); |
72 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller); | |
60605cbc | 73 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info); |
74efb822 AK |
74 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, |
75 | bool is_local); | |
c44ab6f1 AK |
76 | |
77 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
8fc2ffb3 | 78 | static int bgp_evpn_run_consistency_checks(struct thread *t); |
090efa2f AK |
79 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info); |
80 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info); | |
c44ab6f1 AK |
81 | |
82 | /****************************************************************************** | |
83 | * per-ES (Ethernet Segment) routing table | |
84 | * | |
85 | * Following routes are added to the ES's routing table - | |
86 | * 1. Local and remote ESR (Type-4) | |
87 | * 2. Local EAD-per-ES (Type-1). | |
88 | * | |
89 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
90 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
91 | * being added to same ES). | |
92 | * | |
93 | * Note the following routes go into the VNI routing table (instead of the | |
94 | * ES routing table) - | |
95 | * 1. Remote EAD-per-ES | |
96 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 97 | */ |
185fb14a | 98 | |
c44ab6f1 AK |
99 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
100 | * installed in the ES's routing table. | |
185fb14a | 101 | */ |
c44ab6f1 | 102 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
103 | struct bgp_evpn_es *es, |
104 | struct bgp_dest *dest) | |
185fb14a AK |
105 | { |
106 | int ret = 0; | |
107 | afi_t afi = AFI_L2VPN; | |
108 | safi_t safi = SAFI_EVPN; | |
109 | struct bgp_path_info *old_select; /* old best */ | |
110 | struct bgp_path_info *new_select; /* new best */ | |
111 | struct bgp_path_info_pair old_and_new; | |
112 | ||
113 | /* Compute the best path. */ | |
09319b4e DS |
114 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
115 | afi, safi); | |
185fb14a AK |
116 | old_select = old_and_new.old; |
117 | new_select = old_and_new.new; | |
118 | ||
119 | /* | |
120 | * If the best path hasn't changed - see if something needs to be | |
121 | * updated | |
122 | */ | |
123 | if (old_select && old_select == new_select | |
09319b4e DS |
124 | && old_select->type == ZEBRA_ROUTE_BGP |
125 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
126 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
127 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
128 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 129 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
130 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
131 | true /*esr*/, | |
132 | old_select->attr->df_alg, | |
133 | old_select->attr->df_pref); | |
185fb14a AK |
134 | } |
135 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 136 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
137 | return ret; |
138 | } | |
139 | ||
140 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 141 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 142 | |
c44ab6f1 | 143 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
144 | * into the zebra RIB. |
145 | */ | |
146 | if (old_select || new_select) | |
09319b4e | 147 | bgp_bump_version(dest); |
185fb14a AK |
148 | |
149 | if (old_select) | |
09319b4e | 150 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 151 | if (new_select) { |
09319b4e DS |
152 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
153 | bgp_path_info_unset_flag(dest, new_select, | |
154 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
155 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
156 | } | |
157 | ||
158 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 159 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
160 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
161 | true /*esr */, new_select->attr->df_alg, | |
162 | new_select->attr->df_pref); | |
185fb14a AK |
163 | } else { |
164 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
165 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
166 | bgp_evpn_es_vtep_del( | |
167 | bgp, es, old_select->attr->nexthop, | |
168 | true /*esr*/); | |
185fb14a AK |
169 | } |
170 | ||
171 | /* Clear any route change flags. */ | |
09319b4e | 172 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
173 | |
174 | /* Reap old select bgp_path_info, if it has been removed */ | |
175 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 176 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
177 | |
178 | return ret; | |
179 | } | |
180 | ||
c44ab6f1 AK |
181 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
182 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
183 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
184 | struct bgp_path_info *parent_pi) | |
185 | { | |
186 | int ret = 0; | |
09319b4e | 187 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
188 | struct bgp_path_info *pi = NULL; |
189 | struct attr *attr_new = NULL; | |
190 | ||
191 | /* Create (or fetch) route within the VNI. | |
192 | * NOTE: There is no RD here. | |
193 | */ | |
09319b4e | 194 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
195 | |
196 | /* Check if route entry is already present. */ | |
09319b4e | 197 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
198 | if (pi->extra |
199 | && (struct bgp_path_info *)pi->extra->parent == | |
200 | parent_pi) | |
201 | break; | |
202 | ||
203 | if (!pi) { | |
204 | /* Add (or update) attribute to hash. */ | |
205 | attr_new = bgp_attr_intern(parent_pi->attr); | |
206 | ||
207 | /* Create new route with its attribute. */ | |
208 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 209 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
210 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
211 | bgp_path_info_extra_get(pi); | |
212 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
213 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
214 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
215 | } else { |
216 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
217 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 218 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
219 | return 0; |
220 | } | |
221 | /* The attribute has changed. */ | |
222 | /* Add (or update) attribute to hash. */ | |
223 | attr_new = bgp_attr_intern(parent_pi->attr); | |
224 | ||
225 | /* Restore route, if needed. */ | |
226 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 227 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
228 | |
229 | /* Mark if nexthop has changed. */ | |
230 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
231 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
232 | ||
233 | /* Unintern existing, set to new. */ | |
234 | bgp_attr_unintern(&pi->attr); | |
235 | pi->attr = attr_new; | |
236 | pi->uptime = bgp_clock(); | |
237 | } | |
238 | ||
239 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 240 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 241 | |
09319b4e | 242 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
243 | |
244 | return ret; | |
245 | } | |
246 | ||
247 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
248 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
249 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
250 | { | |
251 | int ret; | |
09319b4e | 252 | struct bgp_dest *dest; |
c44ab6f1 AK |
253 | struct bgp_path_info *pi; |
254 | ||
255 | if (!es->route_table) | |
256 | return 0; | |
257 | ||
258 | /* Locate route within the ESI. | |
259 | * NOTE: There is no RD here. | |
260 | */ | |
09319b4e DS |
261 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
262 | if (!dest) | |
c44ab6f1 AK |
263 | return 0; |
264 | ||
265 | /* Find matching route entry. */ | |
09319b4e | 266 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
267 | if (pi->extra |
268 | && (struct bgp_path_info *)pi->extra->parent == | |
269 | parent_pi) | |
270 | break; | |
271 | ||
e71ad4b6 DA |
272 | if (!pi) { |
273 | bgp_dest_unlock_node(dest); | |
c44ab6f1 | 274 | return 0; |
e71ad4b6 | 275 | } |
c44ab6f1 AK |
276 | |
277 | /* Mark entry for deletion */ | |
09319b4e | 278 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
279 | |
280 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 281 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
282 | |
283 | /* Unlock route node. */ | |
09319b4e | 284 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
285 | |
286 | return ret; | |
287 | } | |
288 | ||
289 | /* Install or unistall a Tyoe-4 route in the per-ES routing table */ | |
290 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
291 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
292 | struct bgp_path_info *pi, int install) | |
293 | { | |
294 | int ret = 0; | |
295 | ||
296 | if (install) | |
297 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
298 | else | |
299 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
300 | ||
301 | if (ret) { | |
302 | flog_err( | |
303 | EC_BGP_EVPN_FAIL, | |
304 | "%u: Failed to %s EVPN %s route in ESI %s", | |
305 | bgp->vrf_id, | |
306 | install ? "install" : "uninstall", | |
307 | "ES", es->esi_str); | |
308 | return ret; | |
309 | } | |
310 | return 0; | |
311 | } | |
312 | ||
313 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
314 | * Also remove all remote routes from the per ES table. Invoked when ES | |
315 | * is deleted. | |
185fb14a | 316 | */ |
c44ab6f1 AK |
317 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
318 | { | |
09319b4e | 319 | struct bgp_dest *dest; |
c44ab6f1 AK |
320 | struct bgp_path_info *pi, *nextpi; |
321 | ||
322 | /* de-activate the ES */ | |
323 | bgp_evpn_local_es_down(bgp, es); | |
324 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
325 | ||
326 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
327 | for (dest = bgp_table_top(es->route_table); dest; |
328 | dest = bgp_route_next(dest)) { | |
329 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
330 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
331 | bgp_path_info_delete(dest, pi); | |
332 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
333 | } |
334 | } | |
335 | } | |
336 | ||
337 | /***************************************************************************** | |
338 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
339 | * segment updates. | |
340 | */ | |
341 | ||
342 | /* create or update local EVPN type1/type4 route entry. | |
343 | * | |
344 | * This could be in - | |
345 | * the ES table if ESR/EAD-ES (or) | |
346 | * the VNI table if EAD-EVI (or) | |
347 | * the global table if ESR/EAD-ES/EAD-EVI | |
348 | * | |
349 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
350 | * ESR). | |
351 | */ | |
d60f63f0 AD |
352 | int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
353 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
354 | struct bgp_dest *dest, struct attr *attr, int add, | |
355 | struct bgp_path_info **ri, int *route_changed) | |
185fb14a | 356 | { |
185fb14a AK |
357 | struct bgp_path_info *tmp_pi = NULL; |
358 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
359 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
360 | struct attr *attr_new = NULL; | |
c44ab6f1 | 361 | struct prefix_evpn *evp; |
185fb14a AK |
362 | |
363 | *ri = NULL; | |
752eed47 | 364 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 365 | *route_changed = 1; |
185fb14a AK |
366 | |
367 | /* locate the local and remote entries if any */ | |
09319b4e | 368 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
369 | tmp_pi = tmp_pi->next) { |
370 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
371 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
372 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
373 | local_pi = tmp_pi; |
374 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
375 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
376 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
377 | remote_pi = tmp_pi; |
378 | } | |
379 | ||
c44ab6f1 AK |
380 | /* we don't expect to see a remote_ri at this point as |
381 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table | |
382 | * in the VNI-rt-table. | |
185fb14a AK |
383 | */ |
384 | if (remote_pi) { | |
385 | flog_err( | |
23d0a753 DA |
386 | EC_BGP_ES_INVALID, |
387 | "%u ERROR: local es route for ESI: %s Vtep %pI4 also learnt from remote", | |
d60f63f0 AD |
388 | bgp->vrf_id, es ? es->esi_str : "Null", |
389 | &es->originator_ip); | |
185fb14a AK |
390 | return -1; |
391 | } | |
392 | ||
393 | if (!local_pi && !add) | |
394 | return 0; | |
395 | ||
396 | /* create or update the entry */ | |
397 | if (!local_pi) { | |
398 | ||
399 | /* Add or update attribute to hash */ | |
400 | attr_new = bgp_attr_intern(attr); | |
401 | ||
402 | /* Create new route with its attribute. */ | |
403 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 404 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
405 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
406 | ||
c44ab6f1 AK |
407 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
408 | bgp_path_info_extra_get(tmp_pi); | |
409 | tmp_pi->extra->num_labels = 1; | |
410 | if (vpn) | |
411 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
412 | else | |
413 | tmp_pi->extra->label[0] = 0; | |
414 | } | |
415 | ||
185fb14a | 416 | /* add the newly created path to the route-node */ |
09319b4e | 417 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
418 | } else { |
419 | tmp_pi = local_pi; | |
420 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 421 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
422 | *route_changed = 0; |
423 | else { | |
424 | /* The attribute has changed. | |
425 | * Add (or update) attribute to hash. | |
426 | */ | |
427 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
428 | bgp_path_info_set_flag(dest, tmp_pi, |
429 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
430 | |
431 | /* Restore route, if needed. */ | |
432 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 433 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
434 | |
435 | /* Unintern existing, set to new. */ | |
436 | bgp_attr_unintern(&tmp_pi->attr); | |
437 | tmp_pi->attr = attr_new; | |
438 | tmp_pi->uptime = bgp_clock(); | |
439 | } | |
440 | } | |
441 | ||
c44ab6f1 AK |
442 | if (*route_changed) { |
443 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
444 | zlog_debug( |
445 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
d60f63f0 | 446 | es ? es->esi_str : "Null", vpn ? vpn->vni : 0, |
23d0a753 DA |
447 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
448 | ? "esr" | |
449 | : (vpn ? "ead-evi" : "ead-es"), | |
450 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
451 | } |
452 | ||
185fb14a AK |
453 | /* Return back the route entry. */ |
454 | *ri = tmp_pi; | |
455 | return 0; | |
456 | } | |
457 | ||
c44ab6f1 AK |
458 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
459 | * | |
460 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
461 | * ESR). | |
462 | */ | |
463 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
464 | struct bgpevpn *vpn, struct prefix_evpn *p) | |
185fb14a | 465 | { |
185fb14a AK |
466 | afi_t afi = AFI_L2VPN; |
467 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 468 | struct bgp_path_info *pi; |
09319b4e DS |
469 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
470 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
471 | struct bgp_table *rt_table; |
472 | struct prefix_rd *prd; | |
185fb14a | 473 | |
c44ab6f1 AK |
474 | if (vpn) { |
475 | rt_table = vpn->route_table; | |
476 | prd = &vpn->prd; | |
477 | } else { | |
478 | rt_table = es->route_table; | |
479 | prd = &es->prd; | |
480 | } | |
185fb14a | 481 | |
c44ab6f1 AK |
482 | /* First, locate the route node within the ESI or VNI. |
483 | * If it doesn't exist, ther is nothing to do. | |
484 | * Note: there is no RD here. | |
485 | */ | |
09319b4e DS |
486 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
487 | if (!dest) | |
c44ab6f1 | 488 | return 0; |
185fb14a | 489 | |
c44ab6f1 | 490 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
491 | zlog_debug( |
492 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
493 | es->esi_str, vpn ? vpn->vni : 0, | |
494 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
495 | ? "esr" | |
496 | : (vpn ? "ead-evi" : "ead-es"), | |
497 | &es->originator_ip); | |
185fb14a | 498 | |
c44ab6f1 AK |
499 | /* Next, locate route node in the global EVPN routing table. |
500 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
501 | */ | |
09319b4e DS |
502 | global_dest = |
503 | bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, | |
504 | (const struct prefix_evpn *)p, prd); | |
505 | if (global_dest) { | |
185fb14a | 506 | |
c44ab6f1 | 507 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 508 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
509 | |
510 | /* Schedule for processing - withdraws to peers happen from | |
511 | * this table. | |
512 | */ | |
513 | if (pi) | |
09319b4e DS |
514 | bgp_process(bgp, global_dest, afi, safi); |
515 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
516 | } |
517 | ||
518 | /* | |
c44ab6f1 | 519 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
520 | * This can just be removed. |
521 | */ | |
09319b4e | 522 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 523 | if (pi) |
09319b4e DS |
524 | bgp_path_info_reap(dest, pi); |
525 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
526 | return 0; |
527 | } | |
528 | ||
d60f63f0 AD |
529 | /* |
530 | * This function is called when the VNI RD changes. | |
531 | * Delete all EAD/EVI local routes for this VNI from the global routing table. | |
532 | * These routes are scheduled for withdraw from peers. | |
533 | */ | |
534 | int delete_global_ead_evi_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
535 | { | |
536 | afi_t afi; | |
537 | safi_t safi; | |
538 | struct bgp_dest *rdrn, *rn; | |
539 | struct bgp_table *table; | |
540 | struct bgp_path_info *pi; | |
541 | ||
542 | afi = AFI_L2VPN; | |
543 | safi = SAFI_EVPN; | |
544 | ||
545 | /* Find the RD node for the VNI in the global table */ | |
546 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); | |
547 | if (rdrn && bgp_dest_has_bgp_path_info_data(rdrn)) { | |
548 | table = bgp_dest_get_bgp_table_info(rdrn); | |
549 | ||
550 | /* | |
551 | * Iterate over all the routes in this table and delete EAD/EVI | |
552 | * routes | |
553 | */ | |
554 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
555 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
556 | ||
557 | if (evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
558 | continue; | |
559 | ||
560 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); | |
561 | if (pi) | |
562 | bgp_process(bgp, rn, afi, safi); | |
563 | } | |
564 | } | |
565 | ||
566 | /* Unlock RD node. */ | |
567 | if (rdrn) | |
568 | bgp_dest_unlock_node(rdrn); | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
c44ab6f1 AK |
573 | /***************************************************************************** |
574 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
575 | * ESRs are used for DF election. Currently service-carving described in |
576 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
577 | * used by default. | |
578 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 579 | */ |
c44ab6f1 AK |
580 | /* Build extended community for EVPN ES (type-4) route */ |
581 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
582 | struct attr *attr) | |
185fb14a | 583 | { |
c44ab6f1 AK |
584 | struct ecommunity ecom_encap; |
585 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 586 | struct ecommunity ecom_df; |
c44ab6f1 AK |
587 | struct ecommunity_val eval; |
588 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 589 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
590 | bgp_encap_types tnl_type; |
591 | struct ethaddr mac; | |
185fb14a | 592 | |
c44ab6f1 AK |
593 | /* Encap */ |
594 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
595 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
596 | encode_encap_extcomm(tnl_type, &eval); | |
597 | ecom_encap.size = 1; | |
34540b0d | 598 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
599 | ecom_encap.val = (uint8_t *)eval.val; |
600 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 601 | |
c44ab6f1 AK |
602 | /* ES import RT */ |
603 | memset(&mac, 0, sizeof(struct ethaddr)); | |
604 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); | |
605 | es_get_system_mac(&es->esi, &mac); | |
606 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
607 | ecom_es_rt.size = 1; | |
34540b0d | 608 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
609 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
610 | attr->ecommunity = | |
611 | ecommunity_merge(attr->ecommunity, &ecom_es_rt); | |
185fb14a | 612 | |
74e2bd89 AK |
613 | /* DF election extended community */ |
614 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
615 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
616 | ecom_df.size = 1; | |
617 | ecom_df.val = (uint8_t *)eval_df.val; | |
618 | attr->ecommunity = ecommunity_merge(attr->ecommunity, &ecom_df); | |
619 | ||
c44ab6f1 | 620 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
185fb14a AK |
621 | } |
622 | ||
c44ab6f1 AK |
623 | /* Create or update local type-4 route */ |
624 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
625 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
626 | { |
627 | int ret = 0; | |
c44ab6f1 AK |
628 | int route_changed = 0; |
629 | afi_t afi = AFI_L2VPN; | |
630 | safi_t safi = SAFI_EVPN; | |
631 | struct attr attr; | |
632 | struct attr *attr_new = NULL; | |
09319b4e | 633 | struct bgp_dest *dest = NULL; |
185fb14a | 634 | struct bgp_path_info *pi = NULL; |
185fb14a | 635 | |
c44ab6f1 AK |
636 | memset(&attr, 0, sizeof(struct attr)); |
637 | ||
638 | /* Build path-attribute for this route. */ | |
639 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
640 | attr.nexthop = es->originator_ip; | |
641 | attr.mp_nexthop_global_in = es->originator_ip; | |
642 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
643 | ||
644 | /* Set up extended community. */ | |
645 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
646 | ||
647 | /* First, create (or fetch) route node within the ESI. */ | |
648 | /* NOTE: There is no RD here. */ | |
09319b4e | 649 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 650 | |
c44ab6f1 | 651 | /* Create or update route entry. */ |
09319b4e DS |
652 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, 1, |
653 | &pi, &route_changed); | |
ec779825 | 654 | if (ret != 0) |
23d0a753 DA |
655 | flog_err( |
656 | EC_BGP_ES_INVALID, | |
657 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
658 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 659 | |
c44ab6f1 AK |
660 | assert(pi); |
661 | attr_new = pi->attr; | |
185fb14a | 662 | |
c44ab6f1 AK |
663 | /* Perform route selection; |
664 | * this is just to set the flags correctly | |
665 | * as local route in the ES always wins. | |
666 | */ | |
09319b4e DS |
667 | bgp_evpn_es_route_select_install(bgp, es, dest); |
668 | bgp_dest_unlock_node(dest); | |
185fb14a | 669 | |
c44ab6f1 AK |
670 | /* If this is a new route or some attribute has changed, export the |
671 | * route to the global table. The route will be advertised to peers | |
672 | * from there. Note that this table is a 2-level tree (RD-level + | |
673 | * Prefix-level) similar to L3VPN routes. | |
674 | */ | |
675 | if (route_changed) { | |
676 | struct bgp_path_info *global_pi; | |
185fb14a | 677 | |
09319b4e DS |
678 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
679 | p, &es->prd); | |
680 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, | |
681 | attr_new, 1, &global_pi, | |
682 | &route_changed); | |
185fb14a | 683 | |
c44ab6f1 | 684 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
685 | bgp_process(bgp, dest, afi, safi); |
686 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
687 | } |
688 | ||
c44ab6f1 AK |
689 | /* Unintern temporary. */ |
690 | aspath_unintern(&attr.aspath); | |
691 | return 0; | |
185fb14a AK |
692 | } |
693 | ||
c44ab6f1 AK |
694 | /* Delete local type-4 route */ |
695 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
696 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 697 | { |
c44ab6f1 AK |
698 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); |
699 | } | |
185fb14a | 700 | |
c44ab6f1 AK |
701 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
702 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
703 | struct attr *attr, uint8_t *pfx, int psize, | |
704 | uint32_t addpath_id) | |
705 | { | |
706 | int ret; | |
707 | esi_t esi; | |
708 | uint8_t ipaddr_len; | |
709 | struct in_addr vtep_ip; | |
710 | struct prefix_rd prd; | |
711 | struct prefix_evpn p; | |
185fb14a | 712 | |
c44ab6f1 AK |
713 | /* Type-4 route should be either 23 or 35 bytes |
714 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 715 | */ |
c44ab6f1 AK |
716 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
717 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
718 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
719 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
720 | peer->bgp->vrf_id, peer->host, psize); | |
721 | return -1; | |
722 | } | |
185fb14a | 723 | |
c44ab6f1 AK |
724 | /* Make prefix_rd */ |
725 | prd.family = AF_UNSPEC; | |
726 | prd.prefixlen = 64; | |
727 | memcpy(&prd.val, pfx, RD_BYTES); | |
728 | pfx += RD_BYTES; | |
185fb14a | 729 | |
c44ab6f1 AK |
730 | /* get the ESI */ |
731 | memcpy(&esi, pfx, ESI_BYTES); | |
732 | pfx += ESI_BYTES; | |
185fb14a | 733 | |
185fb14a | 734 | |
c44ab6f1 AK |
735 | /* Get the IP. */ |
736 | ipaddr_len = *pfx++; | |
737 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
738 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
739 | } else { | |
740 | flog_err( | |
741 | EC_BGP_EVPN_ROUTE_INVALID, | |
742 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
743 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
744 | return -1; | |
745 | } | |
185fb14a | 746 | |
c44ab6f1 AK |
747 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
748 | /* Process the route. */ | |
749 | if (attr) { | |
750 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
751 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
752 | &prd, NULL, 0, 0, NULL); | |
753 | } else { | |
754 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
755 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
756 | &prd, NULL, 0, NULL); | |
757 | } | |
185fb14a AK |
758 | return ret; |
759 | } | |
760 | ||
c44ab6f1 AK |
761 | /* Check if a prefix belongs to the local ES */ |
762 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
763 | struct bgp_evpn_es *es) | |
185fb14a | 764 | { |
c44ab6f1 AK |
765 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
766 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
767 | } |
768 | ||
c44ab6f1 AK |
769 | /* Import remote ESRs on local ethernet segment add */ |
770 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
771 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
772 | { |
773 | int ret; | |
774 | afi_t afi; | |
775 | safi_t safi; | |
09319b4e | 776 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
777 | struct bgp_table *table; |
778 | struct bgp_path_info *pi; | |
779 | ||
780 | afi = AFI_L2VPN; | |
781 | safi = SAFI_EVPN; | |
782 | ||
c44ab6f1 AK |
783 | /* Walk entire global routing table and evaluate routes which could be |
784 | * imported into this Ethernet Segment. | |
185fb14a | 785 | */ |
09319b4e DS |
786 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
787 | rd_dest = bgp_route_next(rd_dest)) { | |
788 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
789 | if (!table) |
790 | continue; | |
791 | ||
09319b4e DS |
792 | for (dest = bgp_table_top(table); dest; |
793 | dest = bgp_route_next(dest)) { | |
794 | struct prefix_evpn *evp = | |
752eed47 | 795 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 796 | |
09319b4e DS |
797 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
798 | pi = pi->next) { | |
185fb14a AK |
799 | /* |
800 | * Consider "valid" remote routes applicable for | |
801 | * this ES. | |
802 | */ | |
803 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
804 | && pi->type == ZEBRA_ROUTE_BGP |
805 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
806 | continue; |
807 | ||
c44ab6f1 | 808 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
809 | continue; |
810 | ||
811 | if (install) | |
c44ab6f1 AK |
812 | ret = bgp_evpn_es_route_install( |
813 | bgp, es, evp, pi); | |
185fb14a | 814 | else |
c44ab6f1 AK |
815 | ret = bgp_evpn_es_route_uninstall( |
816 | bgp, es, evp, pi); | |
185fb14a AK |
817 | |
818 | if (ret) { | |
819 | flog_err( | |
2dbe669b DA |
820 | EC_BGP_EVPN_FAIL, |
821 | "Failed to %s EVPN %pFX route in ESI %s", | |
822 | install ? "install" | |
185fb14a | 823 | : "uninstall", |
2dbe669b | 824 | evp, es->esi_str); |
dc52bece DS |
825 | |
826 | bgp_dest_unlock_node(rd_dest); | |
827 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
828 | return ret; |
829 | } | |
830 | } | |
831 | } | |
832 | } | |
833 | return 0; | |
834 | } | |
835 | ||
c44ab6f1 AK |
836 | /***************************************************************************** |
837 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
838 | * There are two types of EAD routes - | |
839 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
840 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 841 | */ |
185fb14a | 842 | |
c44ab6f1 AK |
843 | /* Extended communities associated with EAD-per-ES */ |
844 | static void bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es *es, | |
845 | struct attr *attr) | |
185fb14a | 846 | { |
c44ab6f1 AK |
847 | struct ecommunity ecom_encap; |
848 | struct ecommunity ecom_esi_label; | |
849 | struct ecommunity_val eval; | |
850 | struct ecommunity_val eval_esi_label; | |
851 | bgp_encap_types tnl_type; | |
852 | struct listnode *evi_node, *rt_node; | |
853 | struct ecommunity *ecom; | |
854 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 855 | |
c44ab6f1 AK |
856 | /* Encap */ |
857 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
858 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
859 | encode_encap_extcomm(tnl_type, &eval); | |
860 | ecom_encap.size = 1; | |
34540b0d | 861 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
862 | ecom_encap.val = (uint8_t *)eval.val; |
863 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
185fb14a | 864 | |
c44ab6f1 AK |
865 | /* ESI label */ |
866 | encode_esi_label_extcomm(&eval_esi_label, | |
867 | false /*single_active*/); | |
868 | ecom_esi_label.size = 1; | |
34540b0d | 869 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
870 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
871 | attr->ecommunity = | |
872 | ecommunity_merge(attr->ecommunity, &ecom_esi_label); | |
873 | ||
874 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
875 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
876 | * with it. | |
877 | */ | |
878 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
879 | evi_node, es_evi)) { | |
880 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
881 | continue; | |
882 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
883 | rt_node, ecom)) | |
884 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
885 | ecom); | |
886 | } | |
887 | ||
888 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
889 | } | |
890 | ||
891 | /* Extended communities associated with EAD-per-EVI */ | |
892 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
893 | struct bgpevpn *vpn, struct attr *attr) | |
894 | { | |
895 | struct ecommunity ecom_encap; | |
896 | struct ecommunity_val eval; | |
897 | bgp_encap_types tnl_type; | |
898 | struct listnode *rt_node; | |
899 | struct ecommunity *ecom; | |
900 | ||
901 | /* Encap */ | |
902 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
903 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
904 | encode_encap_extcomm(tnl_type, &eval); | |
905 | ecom_encap.size = 1; | |
7659ad68 | 906 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 AK |
907 | ecom_encap.val = (uint8_t *)eval.val; |
908 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
909 | ||
910 | /* Add export RTs for the L2-VNI */ | |
911 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
912 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
913 | ||
914 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
915 | } | |
916 | ||
917 | /* Update EVPN EAD (type-1) route - | |
918 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
919 | */ | |
920 | static int bgp_evpn_type1_route_update(struct bgp *bgp, | |
921 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
922 | struct prefix_evpn *p) | |
923 | { | |
924 | int ret = 0; | |
925 | afi_t afi = AFI_L2VPN; | |
926 | safi_t safi = SAFI_EVPN; | |
927 | struct attr attr; | |
928 | struct attr *attr_new = NULL; | |
09319b4e | 929 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
930 | struct bgp_path_info *pi = NULL; |
931 | int route_changed = 0; | |
932 | struct prefix_rd *global_rd; | |
933 | ||
934 | memset(&attr, 0, sizeof(struct attr)); | |
935 | ||
936 | /* Build path-attribute for this route. */ | |
937 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
938 | attr.nexthop = es->originator_ip; | |
939 | attr.mp_nexthop_global_in = es->originator_ip; | |
940 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
941 | ||
942 | if (vpn) { | |
943 | /* EAD-EVI route update */ | |
944 | /* MPLS label */ | |
945 | vni2label(vpn->vni, &(attr.label)); | |
946 | ||
947 | /* Set up extended community */ | |
948 | bgp_evpn_type1_evi_route_extcomm_build(es, vpn, &attr); | |
949 | ||
950 | /* First, create (or fetch) route node within the VNI. */ | |
09319b4e | 951 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
c44ab6f1 AK |
952 | |
953 | /* Create or update route entry. */ | |
09319b4e DS |
954 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
955 | &attr, 1, &pi, &route_changed); | |
ec779825 | 956 | if (ret != 0) |
23d0a753 DA |
957 | flog_err( |
958 | EC_BGP_ES_INVALID, | |
959 | "%u Failed to update EAD-EVI route ESI: %s VNI %u VTEP %pI4", | |
960 | bgp->vrf_id, es->esi_str, vpn->vni, | |
961 | &es->originator_ip); | |
c44ab6f1 AK |
962 | global_rd = &vpn->prd; |
963 | } else { | |
964 | /* EAD-ES route update */ | |
965 | /* MPLS label is 0 for EAD-ES route */ | |
966 | ||
967 | /* Set up extended community */ | |
968 | bgp_evpn_type1_es_route_extcomm_build(es, &attr); | |
969 | ||
970 | /* First, create (or fetch) route node within the ES. */ | |
971 | /* NOTE: There is no RD here. */ | |
972 | /* XXX: fragment ID must be included as a part of the prefix. */ | |
09319b4e | 973 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
974 | |
975 | /* Create or update route entry. */ | |
09319b4e DS |
976 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
977 | &attr, 1, &pi, &route_changed); | |
c44ab6f1 | 978 | if (ret != 0) { |
23d0a753 DA |
979 | flog_err( |
980 | EC_BGP_ES_INVALID, | |
981 | "%u ERROR: Failed to updated EAD-EVI route ESI: %s VTEP %pI4", | |
982 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
c44ab6f1 AK |
983 | } |
984 | global_rd = &es->prd; | |
985 | } | |
986 | ||
987 | ||
988 | assert(pi); | |
989 | attr_new = pi->attr; | |
990 | ||
991 | /* Perform route selection; | |
992 | * this is just to set the flags correctly as local route in | |
993 | * the ES always wins. | |
994 | */ | |
09319b4e DS |
995 | evpn_route_select_install(bgp, vpn, dest); |
996 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
997 | |
998 | /* If this is a new route or some attribute has changed, export the | |
999 | * route to the global table. The route will be advertised to peers | |
1000 | * from there. Note that this table is a 2-level tree (RD-level + | |
1001 | * Prefix-level) similar to L3VPN routes. | |
1002 | */ | |
1003 | if (route_changed) { | |
1004 | struct bgp_path_info *global_pi; | |
1005 | ||
09319b4e DS |
1006 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1007 | p, global_rd); | |
1008 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, | |
1009 | attr_new, 1, &global_pi, | |
1010 | &route_changed); | |
c44ab6f1 AK |
1011 | |
1012 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
1013 | bgp_process(bgp, dest, afi, safi); |
1014 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
1015 | } |
1016 | ||
1017 | /* Unintern temporary. */ | |
1018 | aspath_unintern(&attr.aspath); | |
1019 | return 0; | |
1020 | } | |
1021 | ||
9c49ac74 AD |
1022 | /* |
1023 | * This function is called when the export RT for a VNI changes. | |
1024 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
1025 | * table and advertise these routes to peers. | |
1026 | */ | |
1027 | ||
1028 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) | |
1029 | { | |
1030 | struct prefix_evpn p; | |
1031 | struct bgp_evpn_es *es; | |
1032 | struct bgp_evpn_es_evi *es_evi; | |
1033 | struct bgp_evpn_es_evi *es_evi_next; | |
1034 | ||
1035 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
1036 | &vpn->es_evi_rb_tree, es_evi_next) { | |
1037 | es = es_evi->es; | |
1038 | ||
1039 | /* Update EAD-ES */ | |
1040 | if (CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1041 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1042 | &es->esi, es->originator_ip); | |
1043 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
1044 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1045 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
1046 | bgp->vrf_id, es->esi_str, | |
1047 | es_evi->vpn->vni); | |
1048 | } | |
1049 | ||
1050 | /* Update EAD-EVI */ | |
1051 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1052 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1053 | &es->esi, es->originator_ip); | |
1054 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, | |
1055 | &p)) | |
1056 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1057 | "%u: EAD-EVI route update failure for ESI %s VNI %u", | |
1058 | bgp->vrf_id, es->esi_str, | |
1059 | es_evi->vpn->vni); | |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | ||
c44ab6f1 AK |
1064 | /* Delete local Type-1 route */ |
1065 | static int bgp_evpn_type1_es_route_delete(struct bgp *bgp, | |
1066 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
1067 | { | |
1068 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, p); | |
1069 | } | |
1070 | ||
1071 | static int bgp_evpn_type1_evi_route_delete(struct bgp *bgp, | |
1072 | struct bgp_evpn_es *es, struct bgpevpn *vpn, | |
1073 | struct prefix_evpn *p) | |
1074 | { | |
1075 | return bgp_evpn_mh_route_delete(bgp, es, vpn, p); | |
1076 | } | |
1077 | ||
1078 | /* Generate EAD-EVI for all VNIs */ | |
1079 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1080 | struct bgp_evpn_es *es) | |
1081 | { | |
1082 | struct listnode *evi_node; | |
1083 | struct prefix_evpn p; | |
1084 | struct bgp_evpn_es_evi *es_evi; | |
1085 | ||
fe8293c3 AK |
1086 | /* EAD-per-EVI routes have been suppressed */ |
1087 | if (!bgp_mh_info->ead_evi_tx) | |
1088 | return; | |
1089 | ||
c44ab6f1 AK |
1090 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1091 | /* EAD-EVI route add for this ES is already done */ | |
1092 | return; | |
1093 | ||
1094 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1095 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1096 | &es->esi, es->originator_ip); | |
1097 | ||
1098 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1099 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1100 | continue; | |
1101 | if (bgp_evpn_type1_route_update(bgp, es, es_evi->vpn, &p)) | |
1102 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1103 | "%u: Type4 route creation failure for ESI %s", | |
1104 | bgp->vrf_id, es->esi_str); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Withdraw EAD-EVI for all VNIs | |
1110 | */ | |
1111 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1112 | struct bgp_evpn_es *es) | |
1113 | { | |
1114 | struct listnode *evi_node; | |
1115 | struct prefix_evpn p; | |
1116 | struct bgp_evpn_es_evi *es_evi; | |
1117 | ||
1118 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1119 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1120 | /* EAD-EVI route has not been advertised for this ES */ | |
1121 | return; | |
1122 | ||
1123 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1124 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1125 | &es->esi, es->originator_ip); | |
1126 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1127 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1128 | continue; | |
1129 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, &p)) | |
1130 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1131 | "%u: Type4 route creation failure for ESI %s", | |
1132 | bgp->vrf_id, es->esi_str); | |
1133 | } | |
1134 | } | |
185fb14a AK |
1135 | |
1136 | /* | |
c44ab6f1 | 1137 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1138 | */ |
c44ab6f1 AK |
1139 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1140 | struct attr *attr, uint8_t *pfx, int psize, | |
1141 | uint32_t addpath_id) | |
185fb14a AK |
1142 | { |
1143 | int ret; | |
c44ab6f1 | 1144 | struct prefix_rd prd; |
185fb14a | 1145 | esi_t esi; |
c44ab6f1 AK |
1146 | uint32_t eth_tag; |
1147 | mpls_label_t label; | |
185fb14a | 1148 | struct in_addr vtep_ip; |
185fb14a AK |
1149 | struct prefix_evpn p; |
1150 | ||
c44ab6f1 | 1151 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1152 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1153 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1154 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1155 | return -1; |
1156 | } | |
1157 | ||
1158 | /* Make prefix_rd */ | |
1159 | prd.family = AF_UNSPEC; | |
1160 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1161 | memcpy(&prd.val, pfx, RD_BYTES); |
1162 | pfx += RD_BYTES; | |
185fb14a AK |
1163 | |
1164 | /* get the ESI */ | |
1165 | memcpy(&esi, pfx, ESI_BYTES); | |
1166 | pfx += ESI_BYTES; | |
1167 | ||
c44ab6f1 AK |
1168 | /* Copy Ethernet Tag */ |
1169 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1170 | eth_tag = ntohl(eth_tag); | |
1171 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1172 | |
c44ab6f1 | 1173 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1174 | |
c44ab6f1 AK |
1175 | /* EAD route prefix doesn't include the nexthop in the global |
1176 | * table | |
1177 | */ | |
3a6290bd | 1178 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1179 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1180 | /* Process the route. */ |
1181 | if (attr) { | |
1182 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1183 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1184 | &prd, NULL, 0, 0, NULL); | |
185fb14a AK |
1185 | } else { |
1186 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
c44ab6f1 AK |
1187 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, |
1188 | &prd, NULL, 0, NULL); | |
185fb14a AK |
1189 | } |
1190 | return ret; | |
1191 | } | |
1192 | ||
c44ab6f1 AK |
1193 | /*****************************************************************************/ |
1194 | /* Ethernet Segment Management | |
1195 | * 1. Ethernet Segment is a collection of links attached to the same | |
1196 | * server (MHD) or switch (MHN) | |
1197 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1198 | * 10-byte ES-ID. | |
1199 | * 3. Local ESs are configured in zebra and sent to BGP | |
1200 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1201 | * created on first reference and release on last de-reference | |
1202 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1203 | * to have an ES peer. | |
1204 | */ | |
1205 | ||
1206 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1207 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1208 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1209 | * have been imported into one or more VNIs | |
185fb14a | 1210 | */ |
c44ab6f1 AK |
1211 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1212 | { | |
1213 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1214 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1215 | ||
1216 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1217 | } | |
1218 | ||
1219 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1220 | struct in_addr vtep_ip) | |
1221 | { | |
1222 | struct bgp_evpn_es_vtep *es_vtep; | |
1223 | ||
1224 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1225 | ||
1226 | es_vtep->es = es; | |
1227 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
1228 | listnode_init(&es_vtep->es_listnode, es_vtep); | |
1229 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1230 | ||
1231 | return es_vtep; | |
1232 | } | |
1233 | ||
1234 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1235 | { | |
1236 | struct bgp_evpn_es *es = es_vtep->es; | |
1237 | ||
1238 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1239 | es_vtep->evi_cnt) | |
1240 | /* as long as there is some reference we can't free it */ | |
1241 | return; | |
1242 | ||
1243 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1244 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1245 | } | |
1246 | ||
1247 | /* check if VTEP is already part of the list */ | |
1248 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1249 | struct in_addr vtep_ip) | |
1250 | { | |
1251 | struct listnode *node = NULL; | |
1252 | struct bgp_evpn_es_vtep *es_vtep; | |
1253 | ||
1254 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1255 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1256 | return es_vtep; | |
1257 | } | |
1258 | return NULL; | |
1259 | } | |
1260 | ||
1261 | /* Send the remote ES to zebra for NHG programming */ | |
1262 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1263 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1264 | { | |
1265 | struct bgp_evpn_es *es = es_vtep->es; | |
1266 | struct stream *s; | |
74e2bd89 | 1267 | uint32_t flags = 0; |
c44ab6f1 AK |
1268 | |
1269 | /* Check socket. */ | |
1270 | if (!zclient || zclient->sock < 0) | |
1271 | return 0; | |
1272 | ||
1273 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1274 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1275 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1276 | zlog_debug("No zebra instance, not installing remote es %s", | |
1277 | es->esi_str); | |
1278 | return 0; | |
1279 | } | |
1280 | ||
74e2bd89 AK |
1281 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1282 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1283 | ||
c44ab6f1 AK |
1284 | s = zclient->obuf; |
1285 | stream_reset(s); | |
1286 | ||
1287 | zclient_create_header(s, | |
1288 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1289 | bgp->vrf_id); | |
1290 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1291 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1292 | if (add) { |
1293 | stream_putl(s, flags); | |
1294 | stream_putc(s, es_vtep->df_alg); | |
1295 | stream_putw(s, es_vtep->df_pref); | |
1296 | } | |
c44ab6f1 AK |
1297 | |
1298 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1299 | ||
1300 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1301 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1302 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 AK |
1303 | |
1304 | return zclient_send_message(zclient); | |
1305 | } | |
1306 | ||
1307 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1308 | struct bgp_evpn_es_vtep *es_vtep, |
1309 | bool param_change) | |
c44ab6f1 AK |
1310 | { |
1311 | bool old_active; | |
1312 | bool new_active; | |
1313 | ||
d4980edf | 1314 | old_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 AK |
1315 | /* currently we need an active EVI reference to use the VTEP as |
1316 | * a nexthop. this may change... | |
1317 | */ | |
1318 | if (es_vtep->evi_cnt) | |
1319 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1320 | else | |
1321 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1322 | ||
d4980edf | 1323 | new_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 | 1324 | |
74e2bd89 | 1325 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1326 | |
74e2bd89 AK |
1327 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1328 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1329 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1330 | new_active ? "active" : "inactive", | |
1331 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1332 | |
74e2bd89 AK |
1333 | /* send remote ES to zebra */ |
1334 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1335 | |
8bcb09a1 AK |
1336 | /* The NHG is updated first for efficient failover handling. |
1337 | * Note the NHG can be de-activated while there are bgp | |
1338 | * routes referencing it. Zebra is capable of handling that | |
1339 | * elegantly by holding the NHG till all routes using it are | |
1340 | * removed. | |
26c03e43 | 1341 | */ |
8bcb09a1 | 1342 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1343 | /* queue up the es for background consistency checks */ |
1344 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1345 | } | |
c44ab6f1 AK |
1346 | } |
1347 | ||
1348 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1349 | struct bgp_evpn_es *es, |
1350 | struct in_addr vtep_ip, | |
1351 | bool esr, uint8_t df_alg, | |
1352 | uint16_t df_pref) | |
c44ab6f1 AK |
1353 | { |
1354 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1355 | bool param_change = false; |
c44ab6f1 AK |
1356 | |
1357 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1358 | ||
1359 | if (!es_vtep) | |
1360 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1361 | ||
1362 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1363 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1364 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1365 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1366 | |
74e2bd89 | 1367 | if (esr) { |
c44ab6f1 | 1368 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1369 | if ((es_vtep->df_pref != df_pref) |
1370 | || (es_vtep->df_alg != df_alg)) { | |
1371 | param_change = true; | |
1372 | es_vtep->df_pref = df_pref; | |
1373 | es_vtep->df_alg = df_alg; | |
1374 | } | |
1375 | } else { | |
c44ab6f1 | 1376 | ++es_vtep->evi_cnt; |
74e2bd89 | 1377 | } |
c44ab6f1 | 1378 | |
74e2bd89 | 1379 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1380 | |
1381 | return es_vtep; | |
1382 | } | |
1383 | ||
1384 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1385 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1386 | { | |
74e2bd89 AK |
1387 | bool param_change = false; |
1388 | ||
c44ab6f1 | 1389 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1390 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1391 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1392 | if (esr) { |
1393 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1394 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1395 | param_change = true; | |
1396 | es_vtep->df_pref = 0; | |
1397 | es_vtep->df_alg = 0; | |
1398 | } | |
c44ab6f1 AK |
1399 | } else { |
1400 | if (es_vtep->evi_cnt) | |
1401 | --es_vtep->evi_cnt; | |
1402 | } | |
1403 | ||
74e2bd89 | 1404 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1405 | bgp_evpn_es_vtep_free(es_vtep); |
1406 | } | |
1407 | ||
1408 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1409 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1410 | { | |
1411 | struct bgp_evpn_es_vtep *es_vtep; | |
1412 | ||
1413 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1414 | if (es_vtep) | |
1415 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1416 | } | |
1417 | ||
26c03e43 | 1418 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1419 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1420 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1421 | * state changes. | |
1422 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1423 | * the detination for efficient updates on - | |
1424 | * a. VTEP add/del - this results in a L3NHG update. | |
1425 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1426 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1427 | ****************************************************************************/ |
60605cbc | 1428 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1429 | { |
1430 | bgp_evpn_path_es_unlink(es_info); | |
1431 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1432 | } | |
1433 | ||
60605cbc AK |
1434 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1435 | { | |
1436 | if (mh_info->es_info) | |
1437 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1438 | if (mh_info->nh_info) |
1439 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1440 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1441 | } | |
1442 | ||
26c03e43 AK |
1443 | static struct bgp_path_es_info * |
1444 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1445 | { | |
1446 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1447 | struct bgp_path_mh_info *mh_info; |
1448 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1449 | |
1450 | e = bgp_path_info_extra_get(pi); | |
1451 | ||
60605cbc AK |
1452 | /* If mh_info doesn't exist allocate it */ |
1453 | mh_info = e->mh_info; | |
1454 | if (!mh_info) | |
1455 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1456 | sizeof(struct bgp_path_mh_info)); | |
1457 | ||
26c03e43 | 1458 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1459 | es_info = mh_info->es_info; |
1460 | if (!es_info) { | |
1461 | mh_info->es_info = es_info = | |
1462 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1463 | sizeof(struct bgp_path_es_info)); | |
1464 | es_info->vni = vni; | |
1465 | es_info->pi = pi; | |
26c03e43 AK |
1466 | } |
1467 | ||
60605cbc | 1468 | return es_info; |
26c03e43 AK |
1469 | } |
1470 | ||
60605cbc | 1471 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1472 | { |
1473 | struct bgp_evpn_es *es = es_info->es; | |
1474 | struct bgp_path_info *pi; | |
26c03e43 AK |
1475 | |
1476 | if (!es) | |
1477 | return; | |
1478 | ||
1479 | pi = es_info->pi; | |
1480 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1481 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1482 | &pi->net->p, es->esi_str); | |
26c03e43 | 1483 | |
58bff4d1 AK |
1484 | if (es_info->vni) |
1485 | list_delete_node(es->macip_evi_path_list, | |
1486 | &es_info->es_listnode); | |
1487 | else | |
1488 | list_delete_node(es->macip_global_path_list, | |
1489 | &es_info->es_listnode); | |
74efb822 | 1490 | |
26c03e43 AK |
1491 | es_info->es = NULL; |
1492 | ||
1493 | /* if there are no other references against the ES it | |
1494 | * needs to be freed | |
1495 | */ | |
1496 | bgp_evpn_es_free(es, __func__); | |
1497 | ||
1498 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1499 | * along with the path. | |
1500 | */ | |
1501 | } | |
1502 | ||
1503 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1504 | { | |
1505 | struct bgp_path_es_info *es_info; | |
1506 | struct bgp_evpn_es *es; | |
58bff4d1 | 1507 | struct bgp *bgp_evpn; |
26c03e43 | 1508 | |
60605cbc AK |
1509 | es_info = (pi->extra && pi->extra->mh_info) |
1510 | ? pi->extra->mh_info->es_info | |
1511 | : NULL; | |
26c03e43 AK |
1512 | /* if the esi is zero just unlink the path from the old es */ |
1513 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1514 | if (es_info) | |
1515 | bgp_evpn_path_es_unlink(es_info); | |
1516 | return; | |
1517 | } | |
1518 | ||
58bff4d1 | 1519 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1520 | if (!bgp_evpn) |
1521 | return; | |
1522 | ||
1523 | /* setup es_info against the path if it doesn't aleady exist */ | |
1524 | if (!es_info) | |
1525 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1526 | ||
1527 | /* find-create ES */ | |
1528 | es = bgp_evpn_es_find(esi); | |
1529 | if (!es) | |
f61fbf21 | 1530 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1531 | |
1532 | /* dup check */ | |
1533 | if (es_info->es == es) | |
1534 | return; | |
1535 | ||
1536 | /* unlink old ES if any */ | |
1537 | bgp_evpn_path_es_unlink(es_info); | |
1538 | ||
1539 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1540 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1541 | es->esi_str); | |
26c03e43 AK |
1542 | |
1543 | /* link mac-ip path to the new destination ES */ | |
1544 | es_info->es = es; | |
1545 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1546 | if (es_info->vni) |
1547 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1548 | else | |
1549 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1550 | } |
1551 | ||
74efb822 AK |
1552 | static bool bgp_evpn_is_macip_path(struct bgp_path_info *pi) |
1553 | { | |
1554 | struct prefix_evpn *evp; | |
1555 | ||
1556 | /* Only MAC-IP routes need to be linked (MAC-only routes can be | |
1557 | * skipped) as these lists are maintained for managing | |
1558 | * host routes in the tenant VRF | |
1559 | */ | |
1560 | evp = (struct prefix_evpn *)&pi->net->p; | |
1561 | return is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp); | |
1562 | } | |
1563 | ||
58bff4d1 AK |
1564 | /* When a remote ES is added to a VRF, routes using that as |
1565 | * a destination need to be migrated to a L3NHG or viceversa. | |
1566 | * This is done indirectly by re-attempting an install of the | |
1567 | * route in the associated VRFs. As a part of the VRF install use | |
1568 | * of l3 NHG is evaluated and this results in the | |
1569 | * attr.es_flag ATTR_ES_USE_L3_NHG being set or cleared. | |
36dd4574 AK |
1570 | */ |
1571 | static void | |
1572 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1573 | const char *reason) |
26c03e43 AK |
1574 | { |
1575 | struct listnode *node; | |
1576 | struct bgp_path_es_info *es_info; | |
1577 | struct bgp_path_info *pi; | |
58bff4d1 | 1578 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1579 | |
36dd4574 AK |
1580 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1581 | return; | |
1582 | ||
26c03e43 | 1583 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 AK |
1584 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
1585 | es->esi_str, es_vrf->bgp_vrf->name, reason); | |
26c03e43 | 1586 | |
58bff4d1 | 1587 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1588 | pi = es_info->pi; |
26c03e43 | 1589 | |
74efb822 AK |
1590 | if (!bgp_evpn_is_macip_path(pi)) |
1591 | continue; | |
1592 | ||
26c03e43 | 1593 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
2eef4f20 | 1594 | zlog_debug( |
58bff4d1 AK |
1595 | "update path %pFX linked to es %s on vrf chg", |
1596 | &pi->net->p, es->esi_str); | |
1597 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1598 | 1); | |
26c03e43 AK |
1599 | } |
1600 | } | |
1601 | ||
c44ab6f1 AK |
1602 | /* compare ES-IDs for the global ES RB tree */ |
1603 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1604 | const struct bgp_evpn_es *es2) | |
1605 | { | |
1606 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1607 | } | |
1608 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1609 | ||
1610 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1611 | { |
c44ab6f1 | 1612 | struct bgp_evpn_es tmp; |
185fb14a | 1613 | |
185fb14a | 1614 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1615 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1616 | } |
1617 | ||
c44ab6f1 | 1618 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1619 | { |
c44ab6f1 | 1620 | struct bgp_evpn_es *es; |
185fb14a AK |
1621 | |
1622 | if (!bgp) | |
1623 | return NULL; | |
1624 | ||
c44ab6f1 | 1625 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1626 | |
c44ab6f1 | 1627 | /* set the ESI */ |
185fb14a | 1628 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1629 | |
1630 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1631 | es->es_vtep_list = list_new(); |
1632 | listset_app_node_mem(es->es_vtep_list); | |
1633 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1634 | |
c44ab6f1 | 1635 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1636 | |
c44ab6f1 | 1637 | /* Initialize the ES routing table */ |
185fb14a AK |
1638 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1639 | ||
c44ab6f1 AK |
1640 | /* Add to rb_tree */ |
1641 | if (RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es)) { | |
185fb14a AK |
1642 | XFREE(MTYPE_BGP_EVPN_ES, es); |
1643 | return NULL; | |
1644 | } | |
1645 | ||
c44ab6f1 AK |
1646 | /* Initialise the ES-EVI list */ |
1647 | es->es_evi_list = list_new(); | |
1648 | listset_app_node_mem(es->es_evi_list); | |
1649 | ||
c589d847 AK |
1650 | /* Initialise the ES-VRF list used for L3NHG management */ |
1651 | es->es_vrf_list = list_new(); | |
1652 | listset_app_node_mem(es->es_vrf_list); | |
1653 | ||
26c03e43 | 1654 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1655 | es->macip_evi_path_list = list_new(); |
1656 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1657 | es->macip_global_path_list = list_new(); |
1658 | listset_app_node_mem(es->macip_global_path_list); | |
26c03e43 | 1659 | |
c44ab6f1 AK |
1660 | QOBJ_REG(es, bgp_evpn_es); |
1661 | ||
185fb14a AK |
1662 | return es; |
1663 | } | |
1664 | ||
c44ab6f1 | 1665 | /* Free a given ES - |
185fb14a AK |
1666 | * This just frees appropriate memory, caller should have taken other |
1667 | * needed actions. | |
1668 | */ | |
45a859f1 | 1669 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1670 | { |
26c03e43 | 1671 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1672 | || listcount(es->macip_evi_path_list) |
1673 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1674 | return; |
1675 | ||
45a859f1 AK |
1676 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1677 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1678 | ||
c44ab6f1 AK |
1679 | /* cleanup resources maintained against the ES */ |
1680 | list_delete(&es->es_evi_list); | |
c589d847 | 1681 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1682 | list_delete(&es->es_vtep_list); |
d656e0ae | 1683 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1684 | list_delete(&es->macip_global_path_list); |
185fb14a | 1685 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1686 | |
1687 | /* remove the entry from various databases */ | |
1688 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1689 | bgp_evpn_es_cons_checks_pend_del(es); | |
1690 | ||
185fb14a AK |
1691 | QOBJ_UNREG(es); |
1692 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1693 | } | |
1694 | ||
74efb822 AK |
1695 | static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es *es) |
1696 | { | |
1697 | return (es->flags & BGP_EVPNES_LOCAL) | |
1698 | && !(es->flags & BGP_EVPNES_BYPASS); | |
1699 | } | |
1700 | ||
c44ab6f1 AK |
1701 | /* init local info associated with the ES */ |
1702 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1703 | { |
c44ab6f1 | 1704 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
74efb822 AK |
1705 | bool old_is_local; |
1706 | bool is_local; | |
185fb14a | 1707 | |
c44ab6f1 AK |
1708 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1709 | return; | |
185fb14a | 1710 | |
74efb822 | 1711 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1712 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
74efb822 | 1713 | |
c44ab6f1 AK |
1714 | listnode_init(&es->es_listnode, es); |
1715 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1716 | |
c44ab6f1 AK |
1717 | /* auto derive RD for this es */ |
1718 | bf_assign_index(bm->rd_idspace, es->rd_id); | |
1719 | es->prd.family = AF_UNSPEC; | |
1720 | es->prd.prefixlen = 64; | |
23d0a753 | 1721 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, es->rd_id); |
c44ab6f1 | 1722 | (void)str2prefix_rd(buf, &es->prd); |
74efb822 AK |
1723 | |
1724 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1725 | if (old_is_local != is_local) | |
1726 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
c44ab6f1 AK |
1727 | } |
1728 | ||
1729 | /* clear any local info associated with the ES */ | |
d57e0c05 | 1730 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es, bool finish) |
c44ab6f1 | 1731 | { |
74efb822 AK |
1732 | bool old_is_local; |
1733 | bool is_local; | |
1734 | ||
c44ab6f1 AK |
1735 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1736 | return; | |
185fb14a | 1737 | |
74efb822 | 1738 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1739 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1740 | |
74efb822 | 1741 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
d57e0c05 | 1742 | if (!finish && (old_is_local != is_local)) |
74efb822 AK |
1743 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); |
1744 | ||
c44ab6f1 AK |
1745 | /* remove from the ES local list */ |
1746 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
1747 | ||
1748 | bf_release_index(bm->rd_idspace, es->rd_id); | |
1749 | ||
45a859f1 | 1750 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
1751 | } |
1752 | ||
c44ab6f1 AK |
1753 | /* eval remote info associated with the ES */ |
1754 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
1755 | { | |
1756 | if (es->remote_es_evi_cnt) { | |
1757 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
1758 | } else { | |
1759 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
1760 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 1761 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
1762 | } |
1763 | } | |
1764 | } | |
1765 | ||
70524092 AK |
1766 | /* If ES is present and local it needs to be active/oper-up for |
1767 | * including L3 EC | |
1768 | */ | |
1769 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 1770 | { |
70524092 AK |
1771 | struct bgp_evpn_es *es; |
1772 | ||
1773 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1774 | return true; | |
1775 | ||
1776 | es = bgp_evpn_es_find(esi); | |
1777 | ||
1778 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
1779 | || bgp_evpn_local_es_is_active(es)); | |
1780 | } | |
1781 | ||
74efb822 AK |
1782 | static bool bgp_evpn_is_valid_local_path(struct bgp_path_info *pi) |
1783 | { | |
1784 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1785 | && pi->type == ZEBRA_ROUTE_BGP | |
1786 | && pi->sub_type == BGP_ROUTE_STATIC); | |
1787 | } | |
1788 | ||
d656e0ae AK |
1789 | /* Update all local MAC-IP routes in the VNI routing table associated |
1790 | * with the ES. When the ES is down the routes are advertised without | |
1791 | * the L3 extcomm | |
70524092 AK |
1792 | */ |
1793 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
1794 | { | |
1795 | struct listnode *node; | |
1796 | struct bgp_path_es_info *es_info; | |
1797 | struct bgp_path_info *pi; | |
70524092 AK |
1798 | struct bgp *bgp; |
1799 | struct bgpevpn *vpn; | |
1800 | ||
1801 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
1802 | return; | |
1803 | ||
1804 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1805 | zlog_debug("update paths linked to es %s on oper chg", | |
1806 | es->esi_str); | |
1807 | ||
1808 | bgp = bgp_get_evpn(); | |
d656e0ae | 1809 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 | 1810 | pi = es_info->pi; |
74efb822 AK |
1811 | |
1812 | if (!bgp_evpn_is_valid_local_path(pi)) | |
70524092 AK |
1813 | continue; |
1814 | ||
74efb822 | 1815 | if (!bgp_evpn_is_macip_path(pi)) |
70524092 AK |
1816 | continue; |
1817 | ||
1818 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
1819 | if (!vpn) | |
1820 | continue; | |
1821 | ||
1822 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 | 1823 | zlog_debug( |
70545a29 AK |
1824 | "update path %d %pFX linked to es %s on oper chg", |
1825 | es_info->vni, &pi->net->p, es->esi_str); | |
70524092 AK |
1826 | |
1827 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
1828 | __func__); | |
1829 | } | |
74be8313 AK |
1830 | } |
1831 | ||
74efb822 AK |
1832 | static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info *pi) |
1833 | { | |
1834 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
1835 | && pi->type == ZEBRA_ROUTE_BGP | |
1836 | && pi->sub_type == BGP_ROUTE_NORMAL); | |
1837 | } | |
1838 | ||
1839 | /* If an ES is no longer local (or becomes local) we need to re-install | |
1840 | * paths using that ES as destination. This is needed as the criteria | |
1841 | * for best path selection has changed. | |
1842 | */ | |
1843 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, | |
1844 | bool is_local) | |
1845 | { | |
1846 | struct listnode *node; | |
1847 | struct bgp_path_es_info *es_info; | |
1848 | struct bgp_path_info *pi; | |
74efb822 AK |
1849 | bool tmp_local; |
1850 | struct attr *attr_new; | |
1851 | struct attr attr_tmp; | |
1852 | ||
1853 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1854 | zlog_debug("update paths linked to es %s on chg to %s", | |
1855 | es->esi_str, is_local ? "local" : "non-local"); | |
1856 | ||
1857 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { | |
1858 | pi = es_info->pi; | |
1859 | ||
1860 | /* Consider "valid" remote routes */ | |
1861 | if (!bgp_evpn_is_valid_bgp_path(pi)) | |
1862 | continue; | |
1863 | ||
1864 | if (!pi->attr) | |
1865 | continue; | |
1866 | ||
1867 | tmp_local = !!(pi->attr->es_flags & ATTR_ES_IS_LOCAL); | |
1868 | if (tmp_local == is_local) | |
1869 | continue; | |
1870 | ||
1871 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1872 | zlog_debug( | |
70545a29 AK |
1873 | "update path %pFX linked to es %s on chg to %s", |
1874 | &pi->net->p, es->esi_str, | |
1875 | is_local ? "local" : "non-local"); | |
74efb822 AK |
1876 | |
1877 | attr_tmp = *pi->attr; | |
1878 | if (is_local) | |
1879 | attr_tmp.es_flags |= ATTR_ES_IS_LOCAL; | |
1880 | else | |
1881 | attr_tmp.es_flags &= ~ATTR_ES_IS_LOCAL; | |
1882 | attr_new = bgp_attr_intern(&attr_tmp); | |
1883 | bgp_attr_unintern(&pi->attr); | |
1884 | pi->attr = attr_new; | |
1885 | bgp_evpn_import_type2_route(pi, 1); | |
1886 | } | |
1887 | } | |
1888 | ||
74be8313 AK |
1889 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, |
1890 | struct bgp_evpn_es *es) | |
185fb14a | 1891 | { |
185fb14a | 1892 | struct prefix_evpn p; |
c44ab6f1 | 1893 | int ret; |
185fb14a | 1894 | |
c44ab6f1 AK |
1895 | /* withdraw ESR */ |
1896 | /* Delete and withdraw locally learnt ES route */ | |
1897 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1898 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
1899 | if (ret) { | |
1900 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1901 | "%u failed to delete type-4 route for ESI %s", | |
1902 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
1903 | } |
1904 | ||
c44ab6f1 AK |
1905 | /* withdraw EAD-EVI */ |
1906 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
1907 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 1908 | |
c44ab6f1 AK |
1909 | /* withdraw EAD-ES */ |
1910 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
1911 | &es->esi, es->originator_ip); | |
1912 | ret = bgp_evpn_type1_es_route_delete(bgp, es, &p); | |
1913 | if (ret) { | |
1914 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
1915 | "%u failed to delete type-1 route for ESI %s", | |
1916 | bgp->vrf_id, es->esi_str); | |
1917 | } | |
70524092 AK |
1918 | |
1919 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1920 | } |
1921 | ||
74be8313 AK |
1922 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
1923 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 1924 | { |
74be8313 | 1925 | bool old_active; |
c44ab6f1 | 1926 | |
74be8313 AK |
1927 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
1928 | return; | |
c44ab6f1 | 1929 | |
74be8313 AK |
1930 | old_active = bgp_evpn_local_es_is_active(es); |
1931 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1932 | ||
1933 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1934 | zlog_debug("local es %s down", es->esi_str); | |
1935 | ||
1936 | if (old_active) | |
1937 | bgp_evpn_local_es_deactivate(bgp, es); | |
1938 | } | |
1939 | ||
1940 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
1941 | bool regen_ead, bool regen_esr) | |
1942 | { | |
1943 | struct prefix_evpn p; | |
c44ab6f1 | 1944 | |
74e2bd89 AK |
1945 | if (regen_esr) { |
1946 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1947 | zlog_debug("local es %s generate ESR", es->esi_str); | |
1948 | /* generate ESR */ | |
1949 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
1950 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
1951 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1952 | "%u: Type4 route creation failure for ESI %s", | |
1953 | bgp->vrf_id, es->esi_str); | |
1954 | } | |
c44ab6f1 | 1955 | |
74e2bd89 AK |
1956 | if (regen_ead) { |
1957 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1958 | zlog_debug("local es %s generate EAD", es->esi_str); | |
1959 | /* generate EAD-EVI */ | |
1960 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 1961 | |
74e2bd89 AK |
1962 | /* generate EAD-ES */ |
1963 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1964 | es->originator_ip); | |
d934e491 | 1965 | (void)bgp_evpn_type1_route_update(bgp, es, NULL, &p); |
74e2bd89 | 1966 | } |
70524092 AK |
1967 | |
1968 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
1969 | } |
1970 | ||
74be8313 AK |
1971 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
1972 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
1973 | bool regen_esr) | |
1974 | { | |
1975 | bool regen_ead = false; | |
1976 | bool active = false; | |
1977 | ||
1978 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
1979 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1980 | zlog_debug("local es %s up", es->esi_str); | |
1981 | ||
1982 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
1983 | regen_esr = true; | |
1984 | regen_ead = true; | |
1985 | } | |
1986 | ||
1987 | active = bgp_evpn_local_es_is_active(es); | |
1988 | if (active && (regen_ead || regen_esr)) | |
1989 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
1990 | } | |
1991 | ||
1992 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
1993 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
1994 | * bypass state. | |
1995 | * PS: EAD-per-EVI will continue to be advertised | |
1996 | */ | |
1997 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
1998 | struct bgp_evpn_es *es, bool bypass) | |
1999 | { | |
2000 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
2001 | bool old_active; | |
2002 | bool new_active; | |
74efb822 AK |
2003 | bool old_is_local; |
2004 | bool is_local; | |
74be8313 AK |
2005 | |
2006 | if (bypass == old_bypass) | |
2007 | return; | |
2008 | ||
2009 | old_active = bgp_evpn_local_es_is_active(es); | |
74efb822 | 2010 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
74be8313 AK |
2011 | if (bypass) |
2012 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2013 | else | |
2014 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2015 | ||
2016 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2017 | zlog_debug("local es %s bypass %s", es->esi_str, | |
2018 | bypass ? "set" : "clear"); | |
2019 | ||
2020 | new_active = bgp_evpn_local_es_is_active(es); | |
2021 | if (old_active != new_active) { | |
2022 | if (new_active) | |
2023 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
2024 | else | |
2025 | bgp_evpn_local_es_deactivate(bgp, es); | |
2026 | } | |
74efb822 AK |
2027 | |
2028 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
2029 | if (old_is_local != is_local) | |
2030 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
74be8313 AK |
2031 | } |
2032 | ||
c44ab6f1 AK |
2033 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
2034 | { | |
2035 | struct bgp_evpn_es_evi *es_evi; | |
2036 | struct listnode *evi_node, *evi_next_node; | |
2037 | ||
2038 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2039 | zlog_debug("del local es %s", es->esi_str); | |
2040 | ||
2041 | /* Delete all local EVPN ES routes from ESI table | |
2042 | * and schedule for processing (to withdraw from peers)) | |
2043 | */ | |
2044 | bgp_evpn_es_route_del_all(bgp, es); | |
2045 | ||
2046 | /* release all local ES EVIs associated with the ES */ | |
2047 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
2048 | evi_next_node, es_evi)) { | |
2049 | bgp_evpn_local_es_evi_do_del(es_evi); | |
2050 | } | |
2051 | ||
2052 | /* Clear local info associated with the ES and free it up if there is | |
2053 | * no remote reference | |
2054 | */ | |
d57e0c05 | 2055 | bgp_evpn_es_local_info_clear(es, false); |
c44ab6f1 AK |
2056 | } |
2057 | ||
74efb822 | 2058 | bool bgp_evpn_is_esi_local_and_non_bypass(esi_t *esi) |
7904e9fd AK |
2059 | { |
2060 | struct bgp_evpn_es *es = NULL; | |
2061 | ||
2062 | /* Lookup ESI hash - should exist. */ | |
2063 | es = bgp_evpn_es_find(esi); | |
74efb822 AK |
2064 | |
2065 | return es && bgp_evpn_is_es_local_and_non_bypass(es); | |
7904e9fd AK |
2066 | } |
2067 | ||
c44ab6f1 AK |
2068 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
2069 | { | |
2070 | struct bgp_evpn_es *es = NULL; | |
2071 | ||
2072 | /* Lookup ESI hash - should exist. */ | |
2073 | es = bgp_evpn_es_find(esi); | |
2074 | if (!es) { | |
eaf80288 DA |
2075 | flog_warn(EC_BGP_EVPN_ESI, "%u: ES missing at local ES DEL", |
2076 | bgp->vrf_id); | |
c44ab6f1 AK |
2077 | return -1; |
2078 | } | |
2079 | ||
2080 | bgp_evpn_local_es_do_del(bgp, es); | |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | /* Handle device to ES id association. Results in the creation of a local | |
2085 | * ES. | |
2086 | */ | |
2087 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 2088 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 2089 | uint16_t df_pref, bool bypass) |
c44ab6f1 AK |
2090 | { |
2091 | char buf[ESI_STR_LEN]; | |
2092 | struct bgp_evpn_es *es; | |
2093 | bool new_es = true; | |
74e2bd89 | 2094 | bool regen_esr = false; |
c44ab6f1 AK |
2095 | |
2096 | /* create the new es */ | |
2097 | es = bgp_evpn_es_find(esi); | |
2098 | if (es) { | |
2099 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
2100 | new_es = false; | |
2101 | } else { | |
2102 | es = bgp_evpn_es_new(bgp, esi); | |
2103 | if (!es) { | |
2104 | flog_err(EC_BGP_ES_CREATE, | |
2105 | "%u: Failed to allocate ES entry for ESI %s - at Local ES Add", | |
2106 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
2107 | return -1; | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
2112 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
2113 | es->esi_str, &originator_ip, df_pref, | |
2114 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
2115 | |
2116 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
2117 | if (df_pref != es->df_pref) { |
2118 | es->df_pref = df_pref; | |
2119 | regen_esr = true; | |
2120 | } | |
c44ab6f1 AK |
2121 | bgp_evpn_es_local_info_set(bgp, es); |
2122 | ||
2123 | /* import all remote Type-4 routes in the ES table */ | |
2124 | if (new_es) | |
2125 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
2126 | true /* install */); | |
2127 | ||
2128 | /* create and advertise EAD-EVI routes for the ES - | |
2129 | * XXX - till an ES-EVI reference is created there is really nothing to | |
2130 | * advertise | |
2131 | */ | |
2132 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
2133 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
2134 | ||
74be8313 AK |
2135 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
2136 | ||
c44ab6f1 AK |
2137 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
2138 | * can be generated even if the link is inactive. | |
2139 | */ | |
2140 | if (oper_up) | |
74e2bd89 | 2141 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
2142 | else |
2143 | bgp_evpn_local_es_down(bgp, es); | |
2144 | ||
2145 | return 0; | |
2146 | } | |
2147 | ||
9e0c2fd1 AK |
2148 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2149 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2150 | { |
2151 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2152 | struct listnode *node; | |
2153 | struct bgp_evpn_es_vtep *es_vtep; | |
2154 | bool first = true; | |
ec779825 | 2155 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2156 | |
2157 | vtep_str[0] = '\0'; | |
2158 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2159 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2160 | |
c44ab6f1 | 2161 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2162 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2163 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2164 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2165 | |
2166 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2167 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2168 | if (first) | |
c44ab6f1 | 2169 | first = false; |
9e0c2fd1 AK |
2170 | else |
2171 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2172 | strlcat(vtep_str, |
ec779825 AK |
2173 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2174 | sizeof(ip_buf)), | |
23d0a753 | 2175 | vtep_str_size); |
9e0c2fd1 AK |
2176 | strlcat(vtep_str, "(", vtep_str_size); |
2177 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2178 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2179 | } |
2180 | ||
2181 | return vtep_str; | |
2182 | } | |
2183 | ||
c44ab6f1 AK |
2184 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2185 | struct bgp_evpn_es_vtep *es_vtep) | |
2186 | { | |
2187 | json_object *json_vtep_entry; | |
2188 | json_object *json_flags; | |
ec779825 | 2189 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
2190 | |
2191 | json_vtep_entry = json_object_new_object(); | |
2192 | ||
ec779825 AK |
2193 | json_object_string_add( |
2194 | json_vtep_entry, "vtep_ip", | |
2195 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
2196 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2197 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2198 | json_flags = json_object_new_array(); | |
2199 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2200 | json_array_string_add(json_flags, "esr"); | |
2201 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2202 | json_array_string_add(json_flags, "active"); | |
2203 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2204 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2205 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2206 | es_vtep->df_pref); | |
2207 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2208 | es_vtep->df_pref); | |
2209 | } | |
c44ab6f1 AK |
2210 | } |
2211 | ||
2212 | json_object_array_add(json_vteps, | |
2213 | json_vtep_entry); | |
2214 | } | |
2215 | ||
74e2bd89 AK |
2216 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2217 | struct bgp_evpn_es *es) | |
2218 | { | |
2219 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2220 | struct listnode *node; | |
2221 | struct bgp_evpn_es_vtep *es_vtep; | |
2222 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2223 | ||
2224 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2225 | vtep_flag_str[0] = '\0'; | |
2226 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2227 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2228 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2229 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2230 | ||
2231 | if (!strlen(vtep_flag_str)) | |
2232 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2233 | ||
ec779825 | 2234 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2235 | vtep_flag_str); |
2236 | ||
2237 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2238 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2239 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2240 | sizeof(alg_buf)), | |
2241 | es_vtep->df_pref); | |
2242 | else | |
2243 | vty_out(vty, "\n"); | |
2244 | } | |
2245 | } | |
2246 | ||
c44ab6f1 AK |
2247 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2248 | struct bgp_evpn_es *es, json_object *json) | |
2249 | { | |
2250 | char buf1[RD_ADDRSTRLEN]; | |
2251 | struct listnode *node; | |
2252 | struct bgp_evpn_es_vtep *es_vtep; | |
2253 | ||
2254 | if (json) { | |
2255 | json_object *json_vteps; | |
2256 | json_object *json_types; | |
2257 | ||
2258 | json_object_string_add(json, "esi", es->esi_str); | |
2259 | json_object_string_add(json, "rd", | |
2260 | prefix_rd2str(&es->prd, buf1, | |
2261 | sizeof(buf1))); | |
2262 | ||
2263 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2264 | json_types = json_object_new_array(); | |
2265 | if (es->flags & BGP_EVPNES_LOCAL) | |
2266 | json_array_string_add(json_types, "local"); | |
2267 | if (es->flags & BGP_EVPNES_REMOTE) | |
2268 | json_array_string_add(json_types, "remote"); | |
2269 | json_object_object_add(json, "type", json_types); | |
2270 | } | |
2271 | ||
2272 | if (listcount(es->es_vtep_list)) { | |
2273 | json_vteps = json_object_new_array(); | |
2274 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2275 | node, es_vtep)) { | |
2276 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2277 | } | |
2278 | json_object_object_add(json, "vteps", json_vteps); | |
2279 | } | |
2280 | json_object_int_add(json, "vniCount", | |
2281 | listcount(es->es_evi_list)); | |
2282 | } else { | |
2283 | char type_str[4]; | |
2284 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2285 | ||
2286 | type_str[0] = '\0'; | |
74be8313 AK |
2287 | if (es->flags & BGP_EVPNES_BYPASS) |
2288 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2289 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2290 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2291 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2292 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2293 | if (es->inconsistencies) |
9e0c2fd1 | 2294 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2295 | |
9e0c2fd1 | 2296 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 AK |
2297 | |
2298 | if (es->flags & BGP_EVPNES_LOCAL) | |
2299 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2300 | else | |
9e0c2fd1 | 2301 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2302 | |
2303 | vty_out(vty, "%-30s %-5s %-21s %-8d %s\n", | |
2304 | es->esi_str, type_str, buf1, | |
2305 | listcount(es->es_evi_list), vtep_str); | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2310 | struct bgp_evpn_es *es, json_object *json) | |
2311 | { | |
ec779825 | 2312 | char ip_buf[INET6_ADDRSTRLEN]; |
23d0a753 | 2313 | |
c44ab6f1 AK |
2314 | if (json) { |
2315 | json_object *json_flags; | |
2316 | json_object *json_incons; | |
74e2bd89 AK |
2317 | json_object *json_vteps; |
2318 | struct listnode *node; | |
2319 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2320 | |
2321 | /* Add the "brief" info first */ | |
2322 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2323 | if (es->flags |
2324 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2325 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2326 | json_flags = json_object_new_array(); |
2327 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2328 | json_array_string_add(json_flags, "up"); | |
2329 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2330 | json_array_string_add(json_flags, | |
2331 | "advertiseEVI"); | |
74be8313 AK |
2332 | if (es->flags & BGP_EVPNES_BYPASS) |
2333 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2334 | json_object_object_add(json, "flags", json_flags); |
2335 | } | |
2336 | json_object_string_add(json, "originator_ip", | |
23d0a753 | 2337 | inet_ntop(AF_INET, &es->originator_ip, |
ec779825 | 2338 | ip_buf, sizeof(ip_buf))); |
c44ab6f1 AK |
2339 | json_object_int_add(json, "remoteVniCount", |
2340 | es->remote_es_evi_cnt); | |
229587fb AK |
2341 | json_object_int_add(json, "vrfCount", |
2342 | listcount(es->es_vrf_list)); | |
2343 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2344 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2345 | json_object_int_add(json, "macipGlobalPathCount", |
2346 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2347 | json_object_int_add(json, "inconsistentVniVtepCount", |
2348 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2349 | if (listcount(es->es_vtep_list)) { |
2350 | json_vteps = json_object_new_array(); | |
2351 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2352 | es_vtep)) { | |
2353 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2354 | } | |
2355 | json_object_object_add(json, "vteps", json_vteps); | |
2356 | } | |
c44ab6f1 AK |
2357 | if (es->inconsistencies) { |
2358 | json_incons = json_object_new_array(); | |
2359 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2360 | json_array_string_add(json_incons, | |
2361 | "vni-vtep-mismatch"); | |
2362 | json_object_object_add(json, "inconsistencies", | |
2363 | json_incons); | |
2364 | } | |
2365 | } else { | |
2366 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2367 | char type_str[4]; | |
c44ab6f1 AK |
2368 | char buf1[RD_ADDRSTRLEN]; |
2369 | ||
2370 | type_str[0] = '\0'; | |
2371 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2372 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2373 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2374 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2375 | |
c44ab6f1 AK |
2376 | if (es->flags & BGP_EVPNES_LOCAL) |
2377 | prefix_rd2str(&es->prd, buf1, sizeof(buf1)); | |
2378 | else | |
9e0c2fd1 | 2379 | strlcpy(buf1, "-", sizeof(buf1)); |
c44ab6f1 AK |
2380 | |
2381 | vty_out(vty, "ESI: %s\n", es->esi_str); | |
2382 | vty_out(vty, " Type: %s\n", type_str); | |
2383 | vty_out(vty, " RD: %s\n", buf1); | |
23d0a753 | 2384 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2385 | if (es->flags & BGP_EVPNES_LOCAL) |
2386 | vty_out(vty, " Local ES DF preference: %u\n", | |
2387 | es->df_pref); | |
74be8313 AK |
2388 | if (es->flags & BGP_EVPNES_BYPASS) |
2389 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2390 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2391 | vty_out(vty, " Remote VNI Count: %d\n", | |
2392 | es->remote_es_evi_cnt); | |
229587fb | 2393 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2394 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2395 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2396 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2397 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2398 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2399 | es->incons_evi_vtep_cnt); | |
2400 | if (es->inconsistencies) { | |
2401 | incons_str[0] = '\0'; | |
2402 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2403 | strlcat(incons_str, "vni-vtep-mismatch", |
2404 | sizeof(incons_str)); | |
c44ab6f1 | 2405 | } else { |
9e0c2fd1 | 2406 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2407 | } |
2408 | vty_out(vty, " Inconsistencies: %s\n", | |
2409 | incons_str); | |
74e2bd89 AK |
2410 | if (listcount(es->es_vtep_list)) { |
2411 | vty_out(vty, " VTEPs:\n"); | |
2412 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2413 | } | |
c44ab6f1 AK |
2414 | vty_out(vty, "\n"); |
2415 | } | |
2416 | } | |
2417 | ||
2418 | /* Display all ESs */ | |
2419 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2420 | { | |
2421 | struct bgp_evpn_es *es; | |
9c7edc03 | 2422 | json_object *json_array = NULL; |
c44ab6f1 AK |
2423 | json_object *json = NULL; |
2424 | ||
2425 | if (uj) { | |
2426 | /* create an array of ESs */ | |
2427 | json_array = json_object_new_array(); | |
2428 | } else { | |
2429 | if (!detail) { | |
2430 | vty_out(vty, | |
74be8313 | 2431 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2432 | vty_out(vty, |
2433 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2434 | vty_out(vty, | |
2435 | "%-30s %-5s %-21s %-8s %s\n", | |
2436 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2441 | if (uj) | |
2442 | /* create a separate json object for each ES */ | |
2443 | json = json_object_new_object(); | |
2444 | if (detail) | |
2445 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2446 | else | |
2447 | bgp_evpn_es_show_entry(vty, es, json); | |
2448 | /* add ES to the json array */ | |
2449 | if (uj) | |
2450 | json_object_array_add(json_array, json); | |
2451 | } | |
2452 | ||
2453 | /* print the array of json-ESs */ | |
2454 | if (uj) { | |
2455 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2456 | json_array, JSON_C_TO_STRING_PRETTY)); | |
2457 | json_object_free(json_array); | |
2458 | } | |
2459 | } | |
2460 | ||
2461 | /* Display specific ES */ | |
2462 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2463 | { | |
2464 | struct bgp_evpn_es *es; | |
2465 | json_object *json = NULL; | |
2466 | ||
2467 | if (uj) | |
2468 | json = json_object_new_object(); | |
2469 | ||
2470 | es = bgp_evpn_es_find(esi); | |
2471 | if (es) { | |
2472 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2473 | } else { | |
2474 | if (!uj) | |
2475 | vty_out(vty, "ESI not found\n"); | |
2476 | } | |
2477 | ||
2478 | if (uj) { | |
2479 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
2480 | json, JSON_C_TO_STRING_PRETTY)); | |
2481 | json_object_free(json); | |
2482 | } | |
2483 | } | |
2484 | ||
c589d847 AK |
2485 | /*****************************************************************************/ |
2486 | /* Ethernet Segment to VRF association - | |
2487 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2488 | * triggers the creation of an ES-VRF entry. | |
2489 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2490 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2491 | * a /32 or host route entry in the dataplane. If the destination of | |
2492 | * the host route is a remote-ES the route is programmed with the | |
2493 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2494 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2495 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2496 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2497 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2498 | * allowing for a faster failover. | |
2499 | * | |
2500 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2501 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2502 | * in that VRF. | |
2503 | */ | |
2504 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2505 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2506 | bool v4_nhg) | |
c589d847 | 2507 | { |
8bcb09a1 AK |
2508 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2509 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2510 | struct listnode *node; |
2511 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2512 | struct nexthop nh; |
2513 | struct zapi_nexthop *api_nh; | |
2514 | struct zapi_nhg api_nhg = {}; | |
2515 | ||
2516 | /* Skip installation of L3-NHG if host routes used */ | |
2517 | if (!nhg_id) | |
2518 | return; | |
c589d847 AK |
2519 | |
2520 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2521 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2522 | es_vrf->bgp_vrf->vrf_id, | |
2523 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2524 | ||
2525 | /* only the gateway ip changes for each NH. rest of the params | |
2526 | * are constant | |
2527 | */ | |
2528 | memset(&nh, 0, sizeof(nh)); | |
2529 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2530 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2531 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2532 | nh.weight = 1; | |
2533 | nh.type = | |
2534 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2535 | ||
2536 | api_nhg.id = nhg_id; | |
c589d847 | 2537 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2538 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2539 | continue; | |
2540 | ||
719b209c MS |
2541 | /* Don't overrun the zapi buffer. */ |
2542 | if (api_nhg.nexthop_num == MULTIPATH_NUM) | |
2543 | break; | |
2544 | ||
8bcb09a1 AK |
2545 | /* overwrite the gw */ |
2546 | if (v4_nhg) | |
2547 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2548 | else | |
2549 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2550 | es_vtep->vtep_ip); | |
2551 | ||
2552 | /* convert to zapi format */ | |
2553 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2554 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2555 | ||
2556 | ++api_nhg.nexthop_num; | |
2557 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2558 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2559 | &es_vtep->vtep_ip, | |
2560 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
c589d847 AK |
2561 | } |
2562 | ||
8bcb09a1 AK |
2563 | if (!api_nhg.nexthop_num) |
2564 | return; | |
2565 | ||
8bcb09a1 | 2566 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); |
c589d847 AK |
2567 | } |
2568 | ||
8bcb09a1 AK |
2569 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2570 | { | |
2571 | if (!bgp_mh_info->host_routes_use_l3nhg && !bgp_mh_info->install_l3nhg) | |
2572 | return false; | |
2573 | ||
2574 | /* Check socket. */ | |
2575 | if (!zclient || zclient->sock < 0) | |
2576 | return false; | |
2577 | ||
2578 | return true; | |
2579 | } | |
2580 | ||
2581 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2582 | { |
8bcb09a1 AK |
2583 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2584 | return; | |
2585 | ||
2586 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2587 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2588 | } | |
2589 | ||
2590 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2591 | bool v4_nhg) | |
2592 | { | |
2593 | struct zapi_nhg api_nhg = {}; | |
2594 | ||
2595 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2596 | ||
2597 | /* Skip installation of L3-NHG if host routes used */ | |
2598 | if (!api_nhg.id) | |
2599 | return; | |
2600 | ||
c589d847 | 2601 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2602 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2603 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2604 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2605 | ||
2606 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); | |
2607 | } | |
c589d847 | 2608 | |
8bcb09a1 AK |
2609 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2610 | { | |
2611 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2612 | return; | |
2613 | ||
2614 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2615 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2616 | } |
2617 | ||
2618 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2619 | { | |
2620 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2621 | return; | |
2622 | ||
2623 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2624 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2625 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2626 | es_vrf->nhg_id); | |
2627 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2628 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2629 | /* MAC-IPs can now be installed via the L3NHG */ |
2630 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2631 | } |
2632 | ||
2633 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2634 | { | |
2635 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2636 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2637 | return; | |
2638 | } | |
2639 | ||
2640 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2641 | if (!update) | |
2642 | return; | |
2643 | } else { | |
2644 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2645 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2646 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2647 | es_vrf->nhg_id); | |
2648 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2649 | /* MAC-IPs can now be installed via the L3NHG */ |
2650 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2651 | } |
2652 | ||
2653 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2654 | } | |
2655 | ||
2656 | /* when a VTEP is activated or de-activated against an ES associated | |
2657 | * VRFs' NHG needs to be updated | |
2658 | */ | |
2659 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2660 | { | |
2661 | struct bgp_evpn_es_vrf *es_vrf; | |
2662 | struct listnode *es_vrf_node; | |
2663 | ||
2664 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2665 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2666 | ||
2667 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2668 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2669 | } | |
2670 | ||
2671 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2672 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2673 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2674 | { | |
2675 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2676 | } | |
2677 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2678 | ||
2679 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2680 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2681 | { | |
2682 | /* Initialize the ES-VRF RB tree */ | |
2683 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2684 | } | |
2685 | ||
2686 | /* find the ES-VRF in the per-VRF RB tree */ | |
2687 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2688 | struct bgp *bgp_vrf) | |
2689 | { | |
2690 | struct bgp_evpn_es_vrf es_vrf; | |
2691 | ||
2692 | es_vrf.es = es; | |
2693 | ||
2694 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2695 | } | |
2696 | ||
2697 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2698 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2699 | struct bgp *bgp_vrf) | |
2700 | { | |
2701 | struct bgp_evpn_es_vrf *es_vrf; | |
2702 | ||
2703 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2704 | ||
2705 | es_vrf->es = es; | |
2706 | es_vrf->bgp_vrf = bgp_vrf; | |
2707 | ||
2708 | /* insert into the VRF-ESI rb tree */ | |
2709 | if (RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf)) { | |
2710 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); | |
2711 | return NULL; | |
2712 | } | |
2713 | ||
2714 | /* add to the ES's VRF list */ | |
2715 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2716 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2717 | ||
2718 | /* setup the L3 NHG id for the ES */ | |
2719 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2720 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2721 | ||
c589d847 | 2722 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2723 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2724 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2725 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2726 | ||
36dd4574 AK |
2727 | /* update paths in the VRF that may already be associated with |
2728 | * this destination ES | |
2729 | */ | |
58bff4d1 | 2730 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2731 | |
c589d847 AK |
2732 | return es_vrf; |
2733 | } | |
2734 | ||
2735 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2736 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
2737 | { | |
2738 | struct bgp_evpn_es *es = es_vrf->es; | |
2739 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2740 | ||
2741 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2742 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
2743 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
2744 | ||
2745 | /* Remove the NHG resources */ | |
2746 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2747 | if (es_vrf->nhg_id) | |
2748 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
2749 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
2750 | if (es_vrf->v6_nhg_id) |
2751 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
2752 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
2753 | |
2754 | /* remove from the ES's VRF list */ | |
2755 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
2756 | ||
2757 | /* remove from the VRF-ESI rb tree */ | |
2758 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
2759 | ||
d656e0ae AK |
2760 | /* update paths in the VRF that may already be associated with |
2761 | * this destination ES | |
2762 | */ | |
58bff4d1 | 2763 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 2764 | |
c589d847 AK |
2765 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
2766 | } | |
2767 | ||
2768 | /* deref and delete if there are no references */ | |
2769 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
2770 | { | |
2771 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2772 | ||
2773 | if (!es_vrf) | |
2774 | return; | |
2775 | ||
2776 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2777 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
2778 | es_evi->es->esi_str, es_evi->vpn->vni, | |
2779 | es_vrf->bgp_vrf->vrf_id); | |
2780 | ||
2781 | es_evi->es_vrf = NULL; | |
2782 | if (es_vrf->ref_cnt) | |
2783 | --es_vrf->ref_cnt; | |
2784 | ||
2785 | if (!es_vrf->ref_cnt) | |
2786 | bgp_evpn_es_vrf_delete(es_vrf); | |
2787 | } | |
2788 | ||
2789 | /* find or create and reference */ | |
2790 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
2791 | { | |
2792 | struct bgp_evpn_es *es = es_evi->es; | |
2793 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
2794 | struct bgp *old_bgp_vrf = NULL; | |
2795 | ||
2796 | if (es_vrf) | |
2797 | old_bgp_vrf = es_vrf->bgp_vrf; | |
2798 | ||
2799 | if (old_bgp_vrf == bgp_vrf) | |
2800 | return; | |
2801 | ||
2802 | /* deref the old ES-VRF */ | |
2803 | bgp_evpn_es_vrf_deref(es_evi); | |
2804 | ||
2805 | if (!bgp_vrf) | |
2806 | return; | |
2807 | ||
2808 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2809 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
2810 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
2811 | ||
2812 | /* find-create the new ES-VRF */ | |
2813 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2814 | if (!es_vrf) | |
2815 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
2816 | if (!es_vrf) | |
2817 | return; | |
2818 | ||
2819 | es_evi->es_vrf = es_vrf; | |
2820 | ++es_vrf->ref_cnt; | |
2821 | } | |
2822 | ||
2823 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
2824 | * associated ES-EVI entries | |
2825 | */ | |
2826 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
2827 | { | |
2828 | struct bgp_evpn_es_evi *es_evi; | |
2829 | ||
2830 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2831 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
2832 | ||
2833 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2834 | bgp_evpn_es_vrf_deref(es_evi); | |
2835 | } | |
2836 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
2837 | { | |
2838 | struct bgp_evpn_es_evi *es_evi; | |
2839 | ||
2840 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2841 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
2842 | ||
2843 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
2844 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
2845 | } | |
2846 | ||
58bff4d1 AK |
2847 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
2848 | * multi-path list. | |
2849 | * 2. If ES-VRF is present - | |
2850 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
2851 | * all the PEs attached to the VRF are down) do not install the route | |
2852 | * in zebra. | |
2853 | * - if L3NHG has been activated install the route via that L3NHG | |
2854 | */ | |
2855 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
2856 | bool *is_l3nhg_active, | |
2857 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
2858 | { |
2859 | struct bgp_evpn_es *es; | |
2860 | struct bgp_evpn_es_vrf *es_vrf; | |
2861 | ||
2862 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 2863 | return; |
36dd4574 AK |
2864 | |
2865 | es = bgp_evpn_es_find(esi); | |
2866 | if (!es) | |
58bff4d1 | 2867 | return; |
36dd4574 AK |
2868 | |
2869 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
2870 | if (!es_vrf) | |
58bff4d1 AK |
2871 | return; |
2872 | ||
2873 | *use_l3nhg = true; | |
2874 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2875 | *is_l3nhg_active = true; | |
36dd4574 AK |
2876 | if (es_vrf_p) |
2877 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
2878 | } |
2879 | ||
6348981a AK |
2880 | /* returns false if legacy-exploded mp needs to be used for route install */ |
2881 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
2882 | uint32_t *nhg_p) | |
2883 | { | |
2884 | esi_t *esi; | |
36dd4574 | 2885 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
2886 | struct bgp_path_info *parent_pi; |
2887 | struct bgp_node *rn; | |
2888 | struct prefix_evpn *evp; | |
2889 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
2890 | bool use_l3nhg = false; |
2891 | bool is_l3nhg_active = false; | |
6348981a AK |
2892 | |
2893 | *nhg_p = 0; | |
2894 | ||
9f570418 AK |
2895 | /* we don't support NHG for routes leaked from another VRF yet */ |
2896 | if (pi->extra && pi->extra->bgp_orig) | |
2897 | return false; | |
2898 | ||
6348981a AK |
2899 | parent_pi = get_route_parent_evpn(pi); |
2900 | if (!parent_pi) | |
2901 | return false; | |
2902 | ||
2903 | rn = parent_pi->net; | |
2904 | if (!rn) | |
2905 | return false; | |
2906 | ||
2907 | evp = (struct prefix_evpn *)&rn->p; | |
2908 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2909 | return false; | |
2910 | ||
6348981a AK |
2911 | /* non-es path, use legacy-exploded multipath */ |
2912 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
2913 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
2914 | return false; | |
2915 | ||
58bff4d1 AK |
2916 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
2917 | &es_vrf); | |
2918 | ||
36dd4574 | 2919 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 2920 | if (!use_l3nhg) |
36dd4574 AK |
2921 | return false; |
2922 | ||
2923 | /* if the NHG has not been installed we cannot install the route yet, | |
2924 | * return a 0-NHG to indicate that | |
6348981a | 2925 | */ |
58bff4d1 | 2926 | if (!is_l3nhg_active) |
6348981a AK |
2927 | return true; |
2928 | ||
2929 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 2930 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
2931 | *nhg_p = es_vrf->v6_nhg_id; |
2932 | else | |
2933 | *nhg_p = es_vrf->nhg_id; | |
2934 | ||
2935 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
2936 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 2937 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
2938 | * the NHG associated with the ES. fallback to legacy-exploded |
2939 | * multipath | |
2940 | */ | |
2941 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
2942 | sizeof(*esi))) | |
2943 | return false; | |
2944 | } | |
2945 | ||
2946 | return true; | |
2947 | } | |
2948 | ||
229587fb AK |
2949 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
2950 | struct bgp_evpn_es_vrf *es_vrf, | |
2951 | json_object *json) | |
2952 | { | |
2953 | struct bgp_evpn_es *es = es_vrf->es; | |
2954 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
2955 | ||
2956 | if (json) { | |
2957 | json_object *json_types; | |
2958 | ||
2959 | json_object_string_add(json, "esi", es->esi_str); | |
2960 | json_object_string_add(json, "vrf", bgp_vrf->name); | |
2961 | ||
2962 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
2963 | json_types = json_object_new_array(); | |
2964 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2965 | json_array_string_add(json_types, "active"); | |
2966 | json_object_object_add(json, "flags", json_types); | |
2967 | } | |
2968 | ||
2969 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
2970 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
2971 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
2972 | } else { | |
2973 | char flags_str[4]; | |
2974 | ||
2975 | flags_str[0] = '\0'; | |
2976 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
2977 | strlcat(flags_str, "A", sizeof(flags_str)); | |
2978 | ||
2979 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
2980 | bgp_vrf->name, flags_str, es_vrf->nhg_id, | |
2981 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); | |
2982 | } | |
2983 | } | |
2984 | ||
2985 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
2986 | struct bgp_evpn_es *es) | |
2987 | { | |
2988 | json_object *json = NULL; | |
2989 | struct listnode *es_vrf_node; | |
2990 | struct bgp_evpn_es_vrf *es_vrf; | |
2991 | ||
2992 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
2993 | /* create a separate json object for each ES-VRF */ | |
2994 | if (json_array) | |
2995 | json = json_object_new_object(); | |
2996 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
2997 | /* add ES-VRF to the json array */ | |
2998 | if (json_array) | |
2999 | json_object_array_add(json_array, json); | |
3000 | } | |
3001 | } | |
3002 | ||
3003 | /* Display all ES VRFs */ | |
3004 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
3005 | { | |
3006 | json_object *json_array = NULL; | |
3007 | ||
3008 | if (uj) { | |
3009 | /* create an array of ESs */ | |
3010 | json_array = json_object_new_array(); | |
3011 | } else { | |
3012 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
3013 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
3014 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
3015 | } | |
3016 | ||
3017 | if (es) { | |
3018 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3019 | } else { | |
3020 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
3021 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3022 | } | |
3023 | ||
3024 | /* print the array of json-ESs */ | |
3025 | if (uj) { | |
3026 | vty_out(vty, "%s\n", | |
3027 | json_object_to_json_string_ext( | |
3028 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3029 | json_object_free(json_array); | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | /* Display specific ES VRF */ | |
3034 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
3035 | { | |
3036 | struct bgp_evpn_es *es; | |
3037 | ||
3038 | es = bgp_evpn_es_find(esi); | |
3039 | if (es) { | |
3040 | bgp_evpn_es_vrf_show(vty, uj, es); | |
3041 | } else { | |
3042 | if (!uj) | |
3043 | vty_out(vty, "ESI not found\n"); | |
3044 | } | |
3045 | } | |
3046 | ||
c44ab6f1 AK |
3047 | /*****************************************************************************/ |
3048 | /* Ethernet Segment to EVI association - | |
3049 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
3050 | * (bgpevpn->es_evi_rb_tree). | |
3051 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
3052 | * advertises an EAD-EVI (Type-1 EVPN) route | |
3053 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
3054 | * it. | |
3055 | */ | |
3056 | ||
3057 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
3058 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
3059 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
3060 | * VTEPs for which both routes have been rxed are activated. Activation | |
3061 | * creates a NHG in the parent ES. | |
3062 | */ | |
3063 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
3064 | { | |
3065 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
3066 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
3067 | ||
3068 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
3069 | } | |
3070 | ||
3071 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
3072 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3073 | { | |
3074 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3075 | ||
3076 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
3077 | ||
3078 | evi_vtep->es_evi = es_evi; | |
3079 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
3080 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
3081 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3082 | ||
3083 | return evi_vtep; | |
3084 | } | |
3085 | ||
3086 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3087 | { | |
3088 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
3089 | ||
3090 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
3091 | /* as long as there is some reference we can't free it */ | |
3092 | return; | |
3093 | ||
3094 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3095 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
3096 | } | |
3097 | ||
3098 | /* check if VTEP is already part of the list */ | |
3099 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
3100 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3101 | { | |
3102 | struct listnode *node = NULL; | |
3103 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3104 | ||
3105 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3106 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
3107 | return evi_vtep; | |
3108 | } | |
3109 | return NULL; | |
3110 | } | |
3111 | ||
3112 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
3113 | * EAD-per-EVI routes are rxed from it. | |
3114 | */ | |
3115 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
3116 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3117 | { | |
3118 | bool old_active; | |
3119 | bool new_active; | |
fe8293c3 | 3120 | uint32_t ead_activity_flags; |
c44ab6f1 | 3121 | |
d4980edf | 3122 | old_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 | 3123 | |
fe8293c3 AK |
3124 | if (bgp_mh_info->ead_evi_rx) |
3125 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
3126 | * before it can be activated. | |
3127 | */ | |
3128 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
3129 | else | |
3130 | /* EAD-per-ES is sufficent to activate the PE */ | |
3131 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
3132 | ||
3133 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
3134 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
3135 | else | |
3136 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3137 | ||
d4980edf | 3138 | new_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 AK |
3139 | |
3140 | if (old_active == new_active) | |
3141 | return; | |
3142 | ||
3143 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3144 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3145 | evi_vtep->es_evi->es->esi_str, | |
3146 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3147 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3148 | |
3149 | /* add VTEP to parent es */ | |
3150 | if (new_active) { | |
3151 | struct bgp_evpn_es_vtep *es_vtep; | |
3152 | ||
3153 | es_vtep = bgp_evpn_es_vtep_add(bgp, evi_vtep->es_evi->es, | |
74e2bd89 AK |
3154 | evi_vtep->vtep_ip, false /*esr*/, |
3155 | 0, 0); | |
c44ab6f1 AK |
3156 | evi_vtep->es_vtep = es_vtep; |
3157 | } else { | |
3158 | if (evi_vtep->es_vtep) { | |
3159 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3160 | false /*esr*/); | |
3161 | evi_vtep->es_vtep = NULL; | |
3162 | } | |
3163 | } | |
3164 | /* queue up the parent es for background consistency checks */ | |
3165 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3166 | } | |
3167 | ||
3168 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3169 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3170 | bool ead_es) | |
3171 | { | |
3172 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3173 | ||
3174 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3175 | ||
3176 | if (!evi_vtep) | |
3177 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3178 | ||
3179 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3180 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3181 | evi_vtep->es_evi->es->esi_str, | |
3182 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3183 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3184 | |
3185 | if (ead_es) | |
3186 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3187 | else | |
3188 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3189 | ||
3190 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3191 | } | |
3192 | ||
3193 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3194 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3195 | bool ead_es) | |
3196 | { | |
3197 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3198 | ||
3199 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3200 | if (!evi_vtep) | |
3201 | return; | |
3202 | ||
3203 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3204 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3205 | evi_vtep->es_evi->es->esi_str, | |
3206 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3207 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3208 | |
3209 | if (ead_es) | |
3210 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3211 | else | |
3212 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3213 | ||
3214 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3215 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3216 | } | |
3217 | ||
3218 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3219 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3220 | const struct bgp_evpn_es_evi *es_evi2) | |
3221 | { | |
3222 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3223 | } | |
3224 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3225 | ||
3226 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3227 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3228 | struct bgpevpn *vpn) | |
3229 | { | |
3230 | struct bgp_evpn_es_evi es_evi; | |
3231 | ||
3232 | es_evi.es = es; | |
3233 | ||
3234 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3235 | } | |
3236 | ||
3237 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3238 | * tables. | |
3239 | */ | |
3240 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3241 | struct bgpevpn *vpn) | |
3242 | { | |
3243 | struct bgp_evpn_es_evi *es_evi; | |
3244 | ||
3245 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3246 | ||
3247 | es_evi->es = es; | |
3248 | es_evi->vpn = vpn; | |
3249 | ||
3250 | /* Initialise the VTEP list */ | |
3251 | es_evi->es_evi_vtep_list = list_new(); | |
3252 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3253 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3254 | ||
3255 | /* insert into the VNI-ESI rb tree */ | |
3256 | if (RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi)) { | |
3257 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
3258 | return NULL; | |
3259 | } | |
3260 | ||
3261 | /* add to the ES's VNI list */ | |
3262 | listnode_init(&es_evi->es_listnode, es_evi); | |
3263 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3264 | ||
c589d847 AK |
3265 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3266 | ||
c44ab6f1 AK |
3267 | return es_evi; |
3268 | } | |
3269 | ||
3270 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3271 | * up the memory. | |
3272 | */ | |
333ad64b AK |
3273 | static struct bgp_evpn_es_evi * |
3274 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3275 | { |
3276 | struct bgp_evpn_es *es = es_evi->es; | |
3277 | struct bgpevpn *vpn = es_evi->vpn; | |
3278 | ||
3279 | /* cannot free the element as long as there is a local or remote | |
3280 | * reference | |
3281 | */ | |
3282 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3283 | return es_evi; |
c44ab6f1 | 3284 | |
c589d847 AK |
3285 | bgp_evpn_es_vrf_deref(es_evi); |
3286 | ||
c44ab6f1 AK |
3287 | /* remove from the ES's VNI list */ |
3288 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3289 | ||
3290 | /* remove from the VNI-ESI rb tree */ | |
3291 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3292 | ||
3293 | /* free the VTEP list */ | |
3294 | list_delete(&es_evi->es_evi_vtep_list); | |
3295 | ||
3296 | /* remove from the VNI-ESI rb tree */ | |
3297 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3298 | |
3299 | return NULL; | |
c44ab6f1 AK |
3300 | } |
3301 | ||
3302 | /* init local info associated with the ES-EVI */ | |
3303 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3304 | { | |
3305 | struct bgpevpn *vpn = es_evi->vpn; | |
3306 | ||
3307 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3308 | return; | |
3309 | ||
3310 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3311 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3312 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3313 | } | |
3314 | ||
3315 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3316 | static struct bgp_evpn_es_evi * |
3317 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3318 | { |
3319 | struct bgpevpn *vpn = es_evi->vpn; | |
3320 | ||
c44ab6f1 AK |
3321 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); |
3322 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3323 | ||
333ad64b | 3324 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3325 | } |
3326 | ||
3327 | /* eval remote info associated with the ES */ | |
3328 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3329 | { | |
3330 | struct bgp_evpn_es *es = es_evi->es; | |
3331 | ||
3332 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3333 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3334 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3335 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3336 | ++es->remote_es_evi_cnt; | |
3337 | /* set remote on the parent es */ | |
3338 | bgp_evpn_es_remote_info_re_eval(es); | |
3339 | } | |
3340 | } else { | |
3341 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3342 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3343 | if (es->remote_es_evi_cnt) | |
3344 | --es->remote_es_evi_cnt; | |
3345 | bgp_evpn_es_evi_free(es_evi); | |
3346 | /* check if "remote" can be cleared from the | |
3347 | * parent es. | |
3348 | */ | |
3349 | bgp_evpn_es_remote_info_re_eval(es); | |
3350 | } | |
3351 | } | |
3352 | } | |
3353 | ||
333ad64b AK |
3354 | static struct bgp_evpn_es_evi * |
3355 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3356 | { |
3357 | struct prefix_evpn p; | |
3358 | struct bgp_evpn_es *es = es_evi->es; | |
3359 | struct bgp *bgp; | |
3360 | ||
3361 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3362 | return es_evi; |
c44ab6f1 AK |
3363 | |
3364 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3365 | zlog_debug("del local es %s evi %u", | |
3366 | es_evi->es->esi_str, | |
3367 | es_evi->vpn->vni); | |
3368 | ||
3369 | bgp = bgp_get_evpn(); | |
3370 | ||
3371 | if (bgp) { | |
3372 | /* update EAD-ES with new list of VNIs */ | |
74be8313 | 3373 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3374 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, |
3375 | &es->esi, es->originator_ip); | |
3376 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) | |
3377 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3378 | "%u: EAD-ES route update failure for ESI %s VNI %u", | |
3379 | bgp->vrf_id, es->esi_str, | |
3380 | es_evi->vpn->vni); | |
3381 | } | |
3382 | ||
3383 | /* withdraw and delete EAD-EVI */ | |
3384 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3385 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3386 | &es->esi, es->originator_ip); | |
3387 | if (bgp_evpn_type1_evi_route_delete(bgp, | |
3388 | es, es_evi->vpn, &p)) | |
3389 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
3390 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3391 | bgp->vrf_id, es->esi_str, | |
3392 | es_evi->vpn->vni); | |
3393 | } | |
3394 | } | |
3395 | ||
333ad64b | 3396 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3397 | } |
3398 | ||
3399 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3400 | { | |
3401 | struct bgpevpn *vpn; | |
3402 | struct bgp_evpn_es *es; | |
3403 | struct bgp_evpn_es_evi *es_evi; | |
3404 | char buf[ESI_STR_LEN]; | |
3405 | ||
3406 | es = bgp_evpn_es_find(esi); | |
3407 | if (!es) { | |
3408 | flog_err( | |
3409 | EC_BGP_ES_CREATE, | |
3410 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3411 | bgp->vrf_id, vni, | |
3412 | esi_to_str(esi, buf, sizeof(buf))); | |
3413 | return -1; | |
3414 | } | |
3415 | ||
3416 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3417 | if (!vpn) { | |
3418 | flog_err( | |
3419 | EC_BGP_ES_CREATE, | |
3420 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3421 | bgp->vrf_id, vni, es->esi_str); | |
3422 | return -1; | |
3423 | } | |
3424 | ||
3425 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3426 | if (!es_evi) { | |
3427 | flog_err( | |
3428 | EC_BGP_ES_CREATE, | |
3429 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3430 | bgp->vrf_id, vni, es->esi_str); | |
3431 | return -1; | |
3432 | } | |
3433 | ||
3434 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3435 | return 0; | |
3436 | } | |
3437 | ||
3438 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3439 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3440 | { | |
3441 | struct bgpevpn *vpn; | |
3442 | struct prefix_evpn p; | |
3443 | struct bgp_evpn_es *es; | |
3444 | struct bgp_evpn_es_evi *es_evi; | |
3445 | char buf[ESI_STR_LEN]; | |
3446 | ||
3447 | es = bgp_evpn_es_find(esi); | |
3448 | if (!es) { | |
3449 | flog_err( | |
3450 | EC_BGP_ES_CREATE, | |
3451 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3452 | bgp->vrf_id, vni, | |
3453 | esi_to_str(esi, buf, sizeof(buf))); | |
3454 | return -1; | |
3455 | } | |
3456 | ||
3457 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3458 | if (!vpn) { | |
3459 | flog_err( | |
3460 | EC_BGP_ES_CREATE, | |
3461 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3462 | bgp->vrf_id, vni, es->esi_str); | |
3463 | return -1; | |
3464 | } | |
3465 | ||
3466 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3467 | zlog_debug("add local es %s evi %u", | |
3468 | es->esi_str, vni); | |
3469 | ||
3470 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3471 | ||
3472 | if (es_evi) { | |
3473 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3474 | /* dup */ | |
3475 | return 0; | |
3476 | } else { | |
3477 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3478 | if (!es_evi) | |
3479 | return -1; | |
3480 | } | |
3481 | ||
3482 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3483 | ||
3484 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3485 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3486 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3487 | es->originator_ip); | |
c44ab6f1 AK |
3488 | if (bgp_evpn_type1_route_update(bgp, es, vpn, &p)) |
3489 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3490 | "%u: EAD-EVI route creation failure for ESI %s VNI %u", | |
3491 | bgp->vrf_id, es->esi_str, vni); | |
3492 | } | |
3493 | ||
3494 | /* update EAD-ES */ | |
3495 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, | |
3496 | &es->esi, es->originator_ip); | |
74be8313 | 3497 | if (bgp_evpn_local_es_is_active(es)) { |
c44ab6f1 AK |
3498 | if (bgp_evpn_type1_route_update(bgp, es, NULL, &p)) |
3499 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
3500 | "%u: EAD-ES route creation failure for ESI %s VNI %u", | |
3501 | bgp->vrf_id, es->esi_str, vni); | |
3502 | } | |
3503 | ||
3504 | return 0; | |
3505 | } | |
3506 | ||
3507 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3508 | * ES-EVI is implicity created on first VTEP's reference. | |
3509 | */ | |
3510 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3511 | const struct prefix_evpn *p) | |
3512 | { | |
3513 | char buf[ESI_STR_LEN]; | |
3514 | struct bgp_evpn_es *es; | |
3515 | struct bgp_evpn_es_evi *es_evi; | |
3516 | bool ead_es; | |
3517 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3518 | ||
3519 | if (!vpn) | |
3520 | /* local EAD-ES need not be sent back to zebra */ | |
3521 | return 0; | |
3522 | ||
3523 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3524 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3525 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3526 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3527 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3528 | |
3529 | es = bgp_evpn_es_find(esi); | |
3530 | if (!es) { | |
3531 | es = bgp_evpn_es_new(bgp, esi); | |
3532 | if (!es) { | |
3533 | flog_err(EC_BGP_ES_CREATE, | |
3534 | "%u: Failed to allocate ES entry for ESI %s - at remote ES Add", | |
3535 | bgp->vrf_id, esi_to_str(esi, buf, sizeof(buf))); | |
3536 | return -1; | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3541 | if (!es_evi) { | |
3542 | es_evi = bgp_evpn_es_evi_new(es, vpn); | |
3543 | if (!es_evi) { | |
45a859f1 | 3544 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
3545 | return -1; |
3546 | } | |
3547 | } | |
3548 | ||
3549 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3550 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3551 | ead_es); | |
3552 | ||
3553 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3554 | return 0; | |
3555 | } | |
3556 | ||
3557 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3558 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3559 | */ | |
3560 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3561 | const struct prefix_evpn *p) | |
3562 | { | |
3563 | char buf[ESI_STR_LEN]; | |
3564 | struct bgp_evpn_es *es; | |
3565 | struct bgp_evpn_es_evi *es_evi; | |
3566 | bool ead_es; | |
3567 | ||
3568 | if (!vpn) | |
3569 | /* local EAD-ES need not be sent back to zebra */ | |
3570 | return 0; | |
3571 | ||
3572 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3573 | zlog_debug( |
3574 | "del remote %s es %s evi %u vtep %pI4", | |
3575 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3576 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3577 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3578 | |
3579 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3580 | if (!es) { |
3581 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3582 | zlog_debug("del remote %s es %s evi %u vtep %pI4, NO es", | |
3583 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3584 | : "ead-evi", | |
3585 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3586 | sizeof(buf)), | |
3587 | vpn->vni, | |
3588 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3589 | return 0; |
2eef4f20 | 3590 | } |
c44ab6f1 | 3591 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3592 | if (!es_evi) { |
3593 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3594 | zlog_debug( | |
3595 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
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 AK |
3604 | |
3605 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3606 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3607 | ead_es); | |
3608 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3609 | return 0; | |
3610 | } | |
3611 | ||
333ad64b AK |
3612 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3613 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3614 | { | |
3615 | struct listnode *node = NULL; | |
3616 | struct listnode *nnode = NULL; | |
3617 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3618 | struct bgp *bgp; | |
3619 | ||
3620 | bgp = bgp_get_evpn(); | |
3621 | if (!bgp) | |
3622 | return; | |
3623 | ||
3624 | /* delete all VTEPs */ | |
3625 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3626 | evi_vtep)) { | |
3627 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3628 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3629 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3630 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3631 | } | |
3632 | /* delete the EVI */ | |
3633 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3634 | } | |
3635 | ||
c44ab6f1 AK |
3636 | /* Initialize the ES tables maintained per-L2_VNI */ |
3637 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3638 | { | |
3639 | /* Initialize the ES-EVI RB tree */ | |
3640 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3641 | ||
3642 | /* Initialize the local list maintained for quick walks by type */ | |
3643 | vpn->local_es_evi_list = list_new(); | |
3644 | listset_app_node_mem(vpn->local_es_evi_list); | |
3645 | } | |
3646 | ||
3647 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3648 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3649 | { | |
3650 | struct bgp_evpn_es_evi *es_evi; | |
3651 | struct bgp_evpn_es_evi *es_evi_next; | |
3652 | ||
3653 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3654 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3655 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3656 | if (es_evi) | |
3657 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3658 | } |
3659 | ||
3660 | list_delete(&vpn->local_es_evi_list); | |
3661 | } | |
3662 | ||
3663 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3664 | struct bgp_evpn_es_evi *es_evi, |
3665 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3666 | { |
3667 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3668 | struct listnode *node; | |
3669 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3670 | bool first = true; | |
ec779825 | 3671 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3672 | |
3673 | vtep_str[0] = '\0'; | |
3674 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3675 | vtep_flag_str[0] = '\0'; | |
3676 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3677 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3678 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3679 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3680 | |
9e0c2fd1 AK |
3681 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3682 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3683 | if (first) | |
c44ab6f1 | 3684 | first = false; |
9e0c2fd1 AK |
3685 | else |
3686 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3687 | strlcat(vtep_str, |
ec779825 AK |
3688 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3689 | sizeof(ip_buf)), | |
23d0a753 | 3690 | vtep_str_size); |
9e0c2fd1 AK |
3691 | strlcat(vtep_str, "(", vtep_str_size); |
3692 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3693 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3694 | } |
3695 | ||
3696 | return vtep_str; | |
3697 | } | |
3698 | ||
3699 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3700 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3701 | { | |
3702 | json_object *json_vtep_entry; | |
3703 | json_object *json_flags; | |
ec779825 | 3704 | char ip_buf[INET6_ADDRSTRLEN]; |
c44ab6f1 AK |
3705 | |
3706 | json_vtep_entry = json_object_new_object(); | |
3707 | ||
ec779825 AK |
3708 | json_object_string_add( |
3709 | json_vtep_entry, "vtep_ip", | |
3710 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, sizeof(ip_buf))); | |
c44ab6f1 AK |
3711 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3712 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3713 | json_flags = json_object_new_array(); | |
3714 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3715 | json_array_string_add(json_flags, "ead-per-es"); | |
3716 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3717 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3718 | json_object_object_add(json_vtep_entry, |
3719 | "flags", json_flags); | |
3720 | } | |
3721 | ||
3722 | json_object_array_add(json_vteps, | |
3723 | json_vtep_entry); | |
3724 | } | |
3725 | ||
3726 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3727 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3728 | { | |
3729 | struct listnode *node; | |
3730 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3731 | ||
3732 | if (json) { | |
3733 | json_object *json_vteps; | |
3734 | json_object *json_types; | |
3735 | ||
3736 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
3737 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
3738 | ||
3739 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3740 | BGP_EVPNES_EVI_REMOTE)) { | |
3741 | json_types = json_object_new_array(); | |
3742 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3743 | json_array_string_add(json_types, "local"); | |
3744 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3745 | json_array_string_add(json_types, "remote"); | |
3746 | json_object_object_add(json, "type", json_types); | |
3747 | } | |
3748 | ||
3749 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3750 | json_vteps = json_object_new_array(); | |
3751 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3752 | node, evi_vtep)) { | |
3753 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3754 | evi_vtep); | |
3755 | } | |
3756 | json_object_object_add(json, "vteps", json_vteps); | |
3757 | } | |
3758 | } else { | |
3759 | char type_str[4]; | |
3760 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3761 | ||
3762 | type_str[0] = '\0'; | |
3763 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3764 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3765 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3766 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3767 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3768 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3769 | |
9e0c2fd1 | 3770 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3771 | |
3772 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3773 | es_evi->vpn->vni, es_evi->es->esi_str, | |
3774 | type_str, vtep_str); | |
3775 | } | |
3776 | } | |
3777 | ||
3778 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
3779 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3780 | { | |
3781 | if (json) { | |
3782 | json_object *json_flags; | |
3783 | ||
3784 | /* Add the "brief" info first */ | |
3785 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3786 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { | |
3787 | json_flags = json_object_new_array(); | |
3788 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
3789 | json_object_object_add(json, "flags", json_flags); | |
3790 | } | |
3791 | } else { | |
3792 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3793 | char type_str[4]; | |
3794 | ||
3795 | type_str[0] = '\0'; | |
3796 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3797 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3798 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3799 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3800 | |
9e0c2fd1 | 3801 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 3802 | if (!strlen(vtep_str)) |
9e0c2fd1 | 3803 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
3804 | |
3805 | vty_out(vty, "VNI: %d ESI: %s\n", | |
3806 | es_evi->vpn->vni, es_evi->es->esi_str); | |
3807 | vty_out(vty, " Type: %s\n", type_str); | |
3808 | vty_out(vty, " Inconsistencies: %s\n", | |
3809 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
3810 | "es-vtep-mismatch":"-"); | |
3811 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
3812 | vty_out(vty, "\n"); | |
3813 | } | |
3814 | } | |
3815 | ||
3816 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
3817 | json_object *json_array, bool detail) | |
3818 | { | |
3819 | struct bgp_evpn_es_evi *es_evi; | |
3820 | json_object *json = NULL; | |
3821 | ||
3822 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
3823 | if (json_array) | |
3824 | /* create a separate json object for each ES */ | |
3825 | json = json_object_new_object(); | |
3826 | if (detail) | |
3827 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
3828 | else | |
3829 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
3830 | /* add ES to the json array */ | |
3831 | if (json_array) | |
3832 | json_object_array_add(json_array, json); | |
3833 | } | |
3834 | } | |
3835 | ||
3836 | struct es_evi_show_ctx { | |
3837 | struct vty *vty; | |
3838 | json_object *json; | |
3839 | int detail; | |
3840 | }; | |
3841 | ||
3842 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
3843 | void *ctxt) | |
3844 | { | |
3845 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
3846 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
3847 | ||
3848 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
3849 | } | |
3850 | ||
3851 | /* Display all ES EVIs */ | |
3852 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
3853 | { | |
3854 | json_object *json_array = NULL; | |
3855 | struct es_evi_show_ctx wctx; | |
3856 | struct bgp *bgp; | |
3857 | ||
3858 | if (uj) { | |
3859 | /* create an array of ES-EVIs */ | |
3860 | json_array = json_object_new_array(); | |
3861 | } | |
3862 | ||
3863 | wctx.vty = vty; | |
3864 | wctx.json = json_array; | |
3865 | wctx.detail = detail; | |
3866 | ||
3867 | bgp = bgp_get_evpn(); | |
3868 | ||
3869 | if (!json_array && !detail) { | |
3870 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3871 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3872 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3873 | "VNI", "ESI", "Flags", "VTEPs"); | |
3874 | } | |
3875 | ||
3876 | if (bgp) | |
3877 | hash_iterate(bgp->vnihash, | |
3878 | (void (*)(struct hash_bucket *, | |
3879 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
3880 | &wctx); | |
3881 | if (uj) { | |
3882 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3883 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3884 | json_object_free(json_array); | |
3885 | } | |
3886 | } | |
3887 | ||
3888 | /* Display specific ES EVI */ | |
3889 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
3890 | bool uj, bool detail) | |
3891 | { | |
3892 | struct bgpevpn *vpn = NULL; | |
3893 | json_object *json_array = NULL; | |
3894 | struct bgp *bgp; | |
3895 | ||
3896 | if (uj) { | |
3897 | /* create an array of ES-EVIs */ | |
3898 | json_array = json_object_new_array(); | |
3899 | } | |
3900 | ||
3901 | bgp = bgp_get_evpn(); | |
3902 | if (bgp) | |
3903 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3904 | ||
3905 | if (vpn) { | |
3906 | if (!json_array && !detail) { | |
3907 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
3908 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
3909 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
3910 | "VNI", "ESI", "Flags", "VTEPs"); | |
3911 | } | |
3912 | ||
3913 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
3914 | } else { | |
3915 | if (!uj) | |
3916 | vty_out(vty, "VNI not found\n"); | |
3917 | } | |
3918 | ||
3919 | if (uj) { | |
3920 | vty_out(vty, "%s\n", json_object_to_json_string_ext( | |
3921 | json_array, JSON_C_TO_STRING_PRETTY)); | |
3922 | json_object_free(json_array); | |
3923 | } | |
3924 | } | |
3925 | ||
3926 | /***************************************************************************** | |
3927 | * Ethernet Segment Consistency checks | |
3928 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
3929 | * an inconsistency is detected it is simply logged (and displayed via | |
3930 | * show commands) at this point. A more drastic action can be executed (based | |
3931 | * on user config) in the future. | |
3932 | */ | |
8fc2ffb3 AK |
3933 | static void bgp_evpn_es_cons_checks_timer_start(void) |
3934 | { | |
3935 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
3936 | return; | |
3937 | ||
3938 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3939 | zlog_debug("periodic consistency checking started"); | |
3940 | ||
3941 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
3942 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
3943 | &bgp_mh_info->t_cons_check); | |
3944 | } | |
3945 | ||
c44ab6f1 AK |
3946 | /* queue up the es for background consistency checks */ |
3947 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
3948 | { | |
3949 | if (!bgp_mh_info->consistency_checking) | |
3950 | /* consistency checking is not enabled */ | |
3951 | return; | |
3952 | ||
3953 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3954 | /* already queued for consistency checking */ | |
3955 | return; | |
3956 | ||
8fc2ffb3 AK |
3957 | /* start the periodic timer for consistency checks if it is not |
3958 | * already running */ | |
3959 | bgp_evpn_es_cons_checks_timer_start(); | |
3960 | ||
c44ab6f1 AK |
3961 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
3962 | listnode_init(&es->pend_es_listnode, es); | |
3963 | listnode_add_after(bgp_mh_info->pend_es_list, | |
3964 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
3965 | &es->pend_es_listnode); | |
3966 | } | |
3967 | ||
3968 | /* pull the ES from the consistency check list */ | |
3969 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
3970 | { | |
3971 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
3972 | return; | |
3973 | ||
3974 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
3975 | list_delete_node(bgp_mh_info->pend_es_list, | |
3976 | &es->pend_es_listnode); | |
3977 | } | |
3978 | ||
3979 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
3980 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
3981 | struct bgp_evpn_es_evi *es_evi) | |
3982 | { | |
3983 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3984 | struct listnode *node; | |
3985 | uint32_t vtep_cnt = 0; | |
3986 | ||
3987 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3988 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
3989 | ++vtep_cnt; | |
3990 | } | |
3991 | ||
3992 | return vtep_cnt; | |
3993 | } | |
3994 | ||
3995 | /* Number of active VTEPs associated with the ES */ | |
3996 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
3997 | { | |
3998 | struct listnode *node; | |
3999 | uint32_t vtep_cnt = 0; | |
4000 | struct bgp_evpn_es_vtep *es_vtep; | |
4001 | ||
4002 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
4003 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4004 | ++vtep_cnt; | |
4005 | } | |
4006 | ||
4007 | return vtep_cnt; | |
4008 | } | |
4009 | ||
4010 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
4011 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
4012 | { | |
4013 | struct listnode *node; | |
4014 | struct bgp_evpn_es_vtep *next_es_vtep; | |
4015 | ||
4016 | if (es_vtep) | |
4017 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
4018 | else | |
4019 | node = listhead(es->es_vtep_list); | |
4020 | ||
4021 | for (; node; node = listnextnode_unchecked(node)) { | |
4022 | next_es_vtep = listgetdata(node); | |
4023 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4024 | return next_es_vtep; | |
4025 | } | |
4026 | ||
4027 | return NULL; | |
4028 | } | |
4029 | ||
4030 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
4031 | struct bgp_evpn_es_evi *es_evi, | |
4032 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
4033 | { | |
4034 | struct listnode *node; | |
4035 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
4036 | ||
4037 | if (evi_vtep) | |
4038 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
4039 | else | |
4040 | node = listhead(es_evi->es_evi_vtep_list); | |
4041 | ||
4042 | for (; node; node = listnextnode_unchecked(node)) { | |
4043 | next_evi_vtep = listgetdata(node); | |
4044 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4045 | return next_evi_vtep; | |
4046 | } | |
4047 | ||
4048 | return NULL; | |
4049 | } | |
4050 | ||
4051 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
4052 | { | |
4053 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
4054 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4055 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
4056 | es_evi->es->esi_str, | |
4057 | es_evi->vpn->vni); | |
4058 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4059 | ||
4060 | /* update parent ES with the incosistency setting */ | |
4061 | if (!es_evi->es->incons_evi_vtep_cnt && | |
4062 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4063 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
4064 | es_evi->es->esi_str); | |
4065 | ++es_evi->es->incons_evi_vtep_cnt; | |
4066 | SET_FLAG(es_evi->es->inconsistencies, | |
4067 | BGP_EVPNES_INCONS_VTEP_LIST); | |
4068 | } | |
4069 | } | |
4070 | ||
4071 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
4072 | { | |
4073 | int proc_cnt = 0; | |
4074 | int es_active_vtep_cnt; | |
4075 | int evi_active_vtep_cnt; | |
4076 | struct bgp_evpn_es_evi *es_evi; | |
4077 | struct listnode *evi_node; | |
4078 | struct bgp_evpn_es_vtep *es_vtep; | |
4079 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4080 | ||
4081 | /* reset the inconsistencies and re-evaluate */ | |
4082 | es->incons_evi_vtep_cnt = 0; | |
4083 | es->inconsistencies = 0; | |
4084 | ||
4085 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
4086 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
4087 | evi_node, es_evi)) { | |
4088 | ++proc_cnt; | |
4089 | ||
4090 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
4091 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4092 | ||
4093 | evi_active_vtep_cnt = | |
4094 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
4095 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
4096 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4097 | continue; | |
4098 | } | |
4099 | ||
4100 | if (!es_active_vtep_cnt) | |
4101 | continue; | |
4102 | ||
4103 | es_vtep = NULL; | |
4104 | evi_vtep = NULL; | |
4105 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
4106 | es, es_vtep))) { | |
4107 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
4108 | evi_vtep); | |
4109 | if (!evi_vtep) { | |
4110 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4111 | break; | |
4112 | } | |
4113 | if (es_vtep->vtep_ip.s_addr != | |
4114 | evi_vtep->vtep_ip.s_addr) { | |
4115 | /* inconsistency detected; set it and move | |
4116 | * to the next evi | |
4117 | */ | |
4118 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4119 | break; | |
4120 | } | |
4121 | } | |
4122 | } | |
4123 | ||
4124 | return proc_cnt; | |
4125 | } | |
4126 | ||
4127 | static int bgp_evpn_run_consistency_checks(struct thread *t) | |
4128 | { | |
4129 | int proc_cnt = 0; | |
4130 | int es_cnt = 0; | |
4131 | struct listnode *node; | |
4132 | struct listnode *nextnode; | |
4133 | struct bgp_evpn_es *es; | |
4134 | ||
4135 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
4136 | node, nextnode, es)) { | |
4137 | ++es_cnt; | |
4138 | ++proc_cnt; | |
4139 | /* run consistency checks on the ES and remove it from the | |
4140 | * pending list | |
4141 | */ | |
4142 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4143 | bgp_evpn_es_cons_checks_pend_del(es); | |
4144 | if (proc_cnt > 500) | |
4145 | break; | |
4146 | } | |
4147 | ||
4148 | /* restart the timer */ | |
4149 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4150 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4151 | &bgp_mh_info->t_cons_check); | |
4152 | ||
4153 | return 0; | |
4154 | } | |
4155 | ||
090efa2f AK |
4156 | /***************************************************************************** |
4157 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4158 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4159 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4160 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4161 | * | |
4162 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4163 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4164 | * RMAC info). | |
4165 | ****************************************************************************/ | |
4166 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4167 | { | |
4168 | struct stream *s; | |
4169 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4170 | ||
4171 | /* Check socket. */ | |
4172 | if (!zclient || zclient->sock < 0) | |
4173 | return; | |
4174 | ||
4175 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4176 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4177 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4178 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4179 | add ? "adding" : "deleting", nh->nh_str); | |
4180 | return; | |
4181 | } | |
4182 | ||
4183 | s = zclient->obuf; | |
4184 | stream_reset(s); | |
4185 | ||
4186 | zclient_create_header( | |
4187 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4188 | bgp_vrf->vrf_id); | |
4189 | stream_putl(s, bgp_vrf->vrf_id); | |
4190 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4191 | if (add) | |
4192 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4193 | ||
4194 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4195 | ||
4196 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4197 | if (add) | |
4198 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
4199 | nh->bgp_vrf->name, nh->nh_str, &nh->rmac); | |
4200 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4201 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
4202 | nh->bgp_vrf->name, nh->nh_str); | |
4203 | } | |
4204 | ||
4205 | zclient_send_message(zclient); | |
4206 | } | |
4207 | ||
4208 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4209 | { | |
4210 | if (add && !is_zero_mac(&nh->rmac)) { | |
4211 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4212 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4213 | } else { | |
4214 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4215 | return; | |
4216 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4217 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4218 | } | |
4219 | } | |
4220 | ||
4221 | static void *bgp_evpn_nh_alloc(void *p) | |
4222 | { | |
4223 | struct bgp_evpn_nh *tmp_n = p; | |
4224 | struct bgp_evpn_nh *n; | |
4225 | ||
4226 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4227 | *n = *tmp_n; | |
4228 | ||
4229 | return ((void *)n); | |
4230 | } | |
4231 | ||
4232 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4233 | struct ipaddr *ip) | |
4234 | { | |
4235 | struct bgp_evpn_nh tmp; | |
4236 | struct bgp_evpn_nh *n; | |
4237 | ||
4238 | memset(&tmp, 0, sizeof(tmp)); | |
4239 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4240 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4241 | ||
4242 | return n; | |
4243 | } | |
4244 | ||
4245 | /* Add nexthop entry - implicitly created on first path reference */ | |
4246 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4247 | struct ipaddr *ip, | |
4248 | struct bgp_path_info *pi) | |
4249 | { | |
4250 | struct bgp_evpn_nh tmp_n; | |
4251 | struct bgp_evpn_nh *n = NULL; | |
4252 | ||
4253 | memset(&tmp_n, 0, sizeof(struct bgp_evpn_nh)); | |
4254 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
4255 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4256 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4257 | n->bgp_vrf = bgp_vrf; | |
4258 | ||
4259 | n->pi_list = list_new(); | |
4260 | listset_app_node_mem(n->pi_list); | |
4261 | ||
4262 | /* Setup ref_pi when the nh is created */ | |
4263 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4264 | n->ref_pi = pi; | |
4265 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4266 | } | |
4267 | ||
4268 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4269 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", n->bgp_vrf->name, | |
4270 | n->nh_str, &n->rmac); | |
4271 | bgp_evpn_nh_zebra_update(n, true); | |
4272 | return n; | |
4273 | } | |
4274 | ||
4275 | /* Delete nexthop entry if there are no paths referencing it */ | |
4276 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4277 | { | |
4278 | struct bgp_evpn_nh *tmp_n; | |
4279 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4280 | ||
4281 | if (listcount(n->pi_list)) | |
4282 | return; | |
4283 | ||
4284 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4285 | zlog_debug("evpn vrf %s nh %s del to zebra", bgp_vrf->name, | |
4286 | n->nh_str); | |
4287 | ||
4288 | bgp_evpn_nh_zebra_update(n, false); | |
4289 | list_delete(&n->pi_list); | |
4290 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4291 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4292 | } | |
4293 | ||
4294 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) | |
4295 | { | |
4296 | const struct bgp_evpn_nh *n = p; | |
4297 | const struct ipaddr *ip = &n->ip; | |
4298 | ||
4299 | if (IS_IPADDR_V4(ip)) | |
4300 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4301 | ||
4302 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4303 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4304 | } | |
4305 | ||
4306 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4307 | { | |
4308 | const struct bgp_evpn_nh *n1 = p1; | |
4309 | const struct bgp_evpn_nh *n2 = p2; | |
4310 | ||
4311 | if (n1 == NULL && n2 == NULL) | |
4312 | return true; | |
4313 | ||
4314 | if (n1 == NULL || n2 == NULL) | |
4315 | return false; | |
4316 | ||
4317 | return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0); | |
4318 | } | |
4319 | ||
4320 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4321 | { | |
4322 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4323 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name); | |
4324 | bgp_vrf->evpn_nh_table = hash_create( | |
4325 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4326 | } | |
4327 | ||
4328 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4329 | { | |
4330 | struct listnode *node; | |
4331 | struct listnode *nnode; | |
4332 | struct bgp_path_evpn_nh_info *nh_info; | |
4333 | ||
4334 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4335 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name, | |
4336 | nh->nh_str); | |
4337 | ||
4338 | /* force flush paths */ | |
4339 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4340 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4341 | } | |
4342 | ||
4343 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4344 | { | |
4345 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4346 | ||
4347 | bgp_evpn_nh_flush_entry(nh); | |
4348 | } | |
4349 | ||
4350 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4351 | { | |
4352 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4353 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name); | |
4354 | hash_iterate( | |
4355 | bgp_vrf->evpn_nh_table, | |
4356 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4357 | NULL); | |
4358 | hash_free(bgp_vrf->evpn_nh_table); | |
4359 | bgp_vrf->evpn_nh_table = NULL; | |
4360 | } | |
4361 | ||
4362 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4363 | { | |
4364 | struct listnode *node; | |
4365 | struct bgp_path_info *pi; | |
4366 | struct bgp_path_evpn_nh_info *nh_info; | |
4367 | ||
4368 | if (nh->ref_pi) | |
4369 | return; | |
4370 | ||
4371 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4372 | pi = nh_info->pi; | |
4373 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4374 | continue; | |
4375 | ||
4376 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4377 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
4378 | nh->bgp_vrf->name, nh->nh_str); | |
4379 | nh->ref_pi = pi; | |
4380 | /* If we have a new pi copy rmac from it and update | |
4381 | * zebra if the new rmac is different | |
4382 | */ | |
4383 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4384 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4385 | bgp_evpn_nh_zebra_update(nh, true); | |
4386 | } | |
4387 | break; | |
4388 | } | |
4389 | } | |
4390 | ||
4391 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4392 | struct bgp_path_info *pi) | |
4393 | { | |
4394 | if (nh->ref_pi != pi) | |
4395 | return; | |
4396 | ||
4397 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4398 | zlog_debug("evpn vrf %s nh %s ref_pi clear", nh->bgp_vrf->name, | |
4399 | nh->nh_str); | |
4400 | nh->ref_pi = NULL; | |
4401 | /* try to find another ref_pi */ | |
4402 | bgp_evpn_nh_update_ref_pi(nh); | |
4403 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4404 | if (!nh->ref_pi) { | |
4405 | memset(&nh->rmac, 0, ETH_ALEN); | |
4406 | bgp_evpn_nh_zebra_update(nh, true); | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4411 | { | |
4412 | bgp_evpn_path_nh_unlink(nh_info); | |
4413 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4414 | } | |
4415 | ||
4416 | static struct bgp_path_evpn_nh_info * | |
4417 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4418 | { | |
4419 | struct bgp_path_info_extra *e; | |
4420 | struct bgp_path_mh_info *mh_info; | |
4421 | struct bgp_path_evpn_nh_info *nh_info; | |
4422 | ||
4423 | e = bgp_path_info_extra_get(pi); | |
4424 | ||
4425 | /* If mh_info doesn't exist allocate it */ | |
4426 | mh_info = e->mh_info; | |
4427 | if (!mh_info) | |
4428 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4429 | sizeof(struct bgp_path_mh_info)); | |
4430 | ||
4431 | /* If nh_info doesn't exist allocate it */ | |
4432 | nh_info = mh_info->nh_info; | |
4433 | if (!nh_info) { | |
4434 | mh_info->nh_info = nh_info = | |
4435 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4436 | sizeof(struct bgp_path_evpn_nh_info)); | |
4437 | nh_info->pi = pi; | |
4438 | } | |
4439 | ||
4440 | return nh_info; | |
4441 | } | |
4442 | ||
4443 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4444 | { | |
4445 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4446 | struct bgp_path_info *pi; | |
4447 | char prefix_buf[PREFIX_STRLEN]; | |
4448 | ||
4449 | if (!nh) | |
4450 | return; | |
4451 | ||
4452 | pi = nh_info->pi; | |
4453 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4454 | zlog_debug("path %s unlinked from nh %s %s", | |
4455 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4456 | sizeof(prefix_buf)) | |
4457 | : "", | |
4458 | nh->bgp_vrf->name, nh->nh_str); | |
4459 | ||
4460 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4461 | ||
4462 | nh_info->nh = NULL; | |
4463 | ||
4464 | /* check if the ref_pi need to be updated */ | |
4465 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4466 | ||
4467 | /* if there are no other references against the nh it | |
4468 | * needs to be freed | |
4469 | */ | |
4470 | bgp_evpn_nh_del(nh); | |
4471 | ||
4472 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4473 | * along with the path. | |
4474 | */ | |
4475 | } | |
4476 | ||
4477 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4478 | { | |
4479 | struct bgp_path_evpn_nh_info *nh_info; | |
4480 | struct bgp_evpn_nh *nh; | |
090efa2f AK |
4481 | struct ipaddr ip; |
4482 | ||
4483 | /* EVPN nexthop setup in bgp has been turned off */ | |
4484 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4485 | return; | |
4486 | ||
4487 | if (!bgp_vrf->evpn_nh_table) { | |
4488 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4489 | zlog_debug("path %pFX linked to vrf %s failed", |
4490 | &pi->net->p, bgp_vrf->name); | |
090efa2f AK |
4491 | return; |
4492 | } | |
4493 | ||
4494 | nh_info = (pi->extra && pi->extra->mh_info) | |
4495 | ? pi->extra->mh_info->nh_info | |
4496 | : NULL; | |
4497 | ||
4498 | /* if NHG is not being used for this path we don't need to manage the | |
4499 | * nexthops in bgp (they are managed by zebra instead) | |
4500 | */ | |
4501 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4502 | if (nh_info) | |
4503 | bgp_evpn_path_nh_unlink(nh_info); | |
4504 | return; | |
4505 | } | |
4506 | ||
4507 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4508 | if (!nh_info) | |
4509 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4510 | ||
4511 | /* find-create nh */ | |
4512 | memset(&ip, 0, sizeof(ip)); | |
4513 | if (pi->net->p.family == AF_INET6) { | |
4514 | SET_IPADDR_V6(&ip); | |
4515 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4516 | sizeof(ip.ipaddr_v6)); | |
4517 | } else { | |
4518 | SET_IPADDR_V4(&ip); | |
4519 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4520 | } | |
4521 | ||
4522 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4523 | if (!nh) | |
4524 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4525 | ||
4526 | /* dup check */ | |
4527 | if (nh_info->nh == nh) { | |
4528 | /* Check if any of the paths are now valid */ | |
4529 | bgp_evpn_nh_update_ref_pi(nh); | |
4530 | return; | |
4531 | } | |
4532 | ||
4533 | /* unlink old nh if any */ | |
4534 | bgp_evpn_path_nh_unlink(nh_info); | |
4535 | ||
4536 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 AK |
4537 | zlog_debug("path %pFX linked to nh %s %s", &pi->net->p, |
4538 | nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4539 | |
4540 | /* link mac-ip path to the new nh */ | |
4541 | nh_info->nh = nh; | |
4542 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4543 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4544 | /* If a new valid path got linked to the nh see if can get the rmac | |
4545 | * from it | |
4546 | */ | |
4547 | bgp_evpn_nh_update_ref_pi(nh); | |
4548 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4549 | if (!nh->ref_pi) | |
4550 | zlog_debug( | |
70545a29 AK |
4551 | "path %pFX linked to nh %s %s with no valid pi", |
4552 | &pi->net->p, nh->bgp_vrf->name, nh->nh_str); | |
090efa2f AK |
4553 | } |
4554 | } | |
4555 | ||
4556 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4557 | { | |
4558 | struct bgp_path_evpn_nh_info *nh_info; | |
4559 | ||
4560 | nh_info = (pi->extra && pi->extra->mh_info) | |
4561 | ? pi->extra->mh_info->nh_info | |
4562 | : NULL; | |
4563 | ||
4564 | if (!nh_info) | |
4565 | return; | |
4566 | ||
4567 | bgp_evpn_path_nh_unlink(nh_info); | |
4568 | } | |
4569 | ||
4570 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4571 | { | |
4572 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4573 | } | |
4574 | ||
4575 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4576 | json_object *json_array) | |
4577 | { | |
4578 | json_object *json = NULL; | |
4579 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4580 | char prefix_buf[PREFIX_STRLEN]; | |
4581 | ||
4582 | if (json_array) | |
4583 | /* create a separate json object for each ES */ | |
4584 | json = json_object_new_object(); | |
4585 | ||
4586 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4587 | if (nh->ref_pi && nh->ref_pi->net) | |
4588 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4589 | else | |
4590 | prefix_buf[0] = '\0'; | |
4591 | if (json) { | |
4592 | json_object_string_add(json, "vrf", nh->bgp_vrf->name); | |
4593 | json_object_string_add(json, "ip", nh->nh_str); | |
4594 | json_object_string_add(json, "rmac", mac_buf); | |
4595 | json_object_string_add(json, "basePath", prefix_buf); | |
4596 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4597 | } else { | |
4598 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", nh->bgp_vrf->name, | |
4599 | nh->nh_str, mac_buf, listcount(nh->pi_list), | |
4600 | prefix_buf); | |
4601 | } | |
4602 | ||
4603 | /* add ES to the json array */ | |
4604 | if (json_array) | |
4605 | json_object_array_add(json_array, json); | |
4606 | } | |
4607 | ||
4608 | struct nh_show_ctx { | |
4609 | struct vty *vty; | |
4610 | json_object *json; | |
4611 | }; | |
4612 | ||
4613 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4614 | { | |
4615 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4616 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4617 | ||
4618 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4619 | } | |
4620 | ||
4621 | /* Display all evpn nexthops */ | |
4622 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4623 | { | |
4624 | json_object *json_array = NULL; | |
4625 | struct bgp *bgp_vrf; | |
4626 | struct listnode *node; | |
4627 | struct nh_show_ctx wctx; | |
4628 | ||
4629 | if (uj) { | |
4630 | /* create an array of nexthops */ | |
4631 | json_array = json_object_new_array(); | |
4632 | } else { | |
4633 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4634 | "RMAC", "#Paths", "Base Path"); | |
4635 | } | |
4636 | ||
4637 | wctx.vty = vty; | |
4638 | wctx.json = json_array; | |
4639 | ||
4640 | /* walk through all vrfs */ | |
4641 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4642 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4643 | (void (*)(struct hash_bucket *, | |
4644 | void *))bgp_evpn_nh_show_hash_cb, | |
4645 | &wctx); | |
4646 | } | |
4647 | ||
4648 | /* print the array of json-ESs */ | |
4649 | if (uj) { | |
4650 | vty_out(vty, "%s\n", | |
4651 | json_object_to_json_string_ext( | |
4652 | json_array, JSON_C_TO_STRING_PRETTY)); | |
4653 | json_object_free(json_array); | |
4654 | } | |
4655 | } | |
4656 | ||
c44ab6f1 AK |
4657 | /*****************************************************************************/ |
4658 | void bgp_evpn_mh_init(void) | |
4659 | { | |
4660 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4661 | ||
4662 | /* setup ES tables */ | |
4663 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4664 | /* local ES list */ | |
4665 | bgp_mh_info->local_es_list = list_new(); | |
4666 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4667 | /* list of ESs with pending processing */ | |
4668 | bgp_mh_info->pend_es_list = list_new(); | |
4669 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4670 | ||
fe8293c3 AK |
4671 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4672 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
4673 | ||
c44ab6f1 AK |
4674 | /* config knobs - XXX add cli to control it */ |
4675 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4676 | bgp_mh_info->consistency_checking = true; | |
2867823e AK |
4677 | bgp_mh_info->install_l3nhg = false; |
4678 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; | |
70524092 | 4679 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4680 | bgp_mh_info->bgp_evpn_nh_setup = true; |
c44ab6f1 | 4681 | |
c44ab6f1 AK |
4682 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4683 | } | |
4684 | ||
4685 | void bgp_evpn_mh_finish(void) | |
4686 | { | |
4687 | struct bgp_evpn_es *es; | |
4688 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4689 | |
45a859f1 AK |
4690 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4691 | zlog_debug("evpn mh finish"); | |
4692 | ||
4693 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4694 | es_next) { | |
d57e0c05 | 4695 | bgp_evpn_es_local_info_clear(es, true); |
c44ab6f1 | 4696 | } |
8fc2ffb3 AK |
4697 | if (bgp_mh_info->t_cons_check) |
4698 | thread_cancel(&bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4699 | list_delete(&bgp_mh_info->local_es_list); |
4700 | list_delete(&bgp_mh_info->pend_es_list); | |
4701 | ||
4702 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4703 | } | |
acd1d9bc AD |
4704 | |
4705 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4706 | void bgp_evpn_switch_ead_evi_rx(void) | |
4707 | { | |
4708 | struct bgp *bgp; | |
4709 | struct bgp_evpn_es *es; | |
4710 | struct bgp_evpn_es_evi *es_evi; | |
4711 | struct listnode *evi_node = NULL; | |
4712 | struct listnode *evi_next = NULL; | |
4713 | struct bgp_evpn_es_evi_vtep *vtep; | |
4714 | struct listnode *vtep_node = NULL; | |
4715 | struct listnode *vtep_next = NULL; | |
4716 | ||
4717 | bgp = bgp_get_evpn(); | |
4718 | if (!bgp) | |
4719 | return; | |
4720 | ||
4721 | /* | |
4722 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4723 | * is active. | |
4724 | */ | |
4725 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4726 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4727 | continue; | |
4728 | ||
4729 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4730 | es_evi)) { | |
4731 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4732 | continue; | |
4733 | ||
4734 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4735 | vtep_node, vtep_next, vtep)) | |
4736 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4737 | } | |
4738 | } | |
4739 | } |