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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
185fb14a AK |
2 | /* EVPN Multihoming procedures |
3 | * | |
4 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
c44ab6f1 | 5 | * Anuradha Karuppiah |
185fb14a | 6 | * |
185fb14a AK |
7 | */ |
8 | ||
9 | #include <zebra.h> | |
10 | ||
11 | #include "command.h" | |
12 | #include "filter.h" | |
13 | #include "prefix.h" | |
14 | #include "log.h" | |
15 | #include "memory.h" | |
16 | #include "stream.h" | |
17 | #include "hash.h" | |
18 | #include "jhash.h" | |
19 | #include "zclient.h" | |
20 | ||
23d0a753 DA |
21 | #include "lib/printfrr.h" |
22 | ||
185fb14a AK |
23 | #include "bgpd/bgp_attr_evpn.h" |
24 | #include "bgpd/bgpd.h" | |
25 | #include "bgpd/bgp_table.h" | |
26 | #include "bgpd/bgp_route.h" | |
27 | #include "bgpd/bgp_attr.h" | |
28 | #include "bgpd/bgp_mplsvpn.h" | |
29 | #include "bgpd/bgp_evpn.h" | |
30 | #include "bgpd/bgp_evpn_private.h" | |
31 | #include "bgpd/bgp_evpn_mh.h" | |
32 | #include "bgpd/bgp_ecommunity.h" | |
33 | #include "bgpd/bgp_encap_types.h" | |
34 | #include "bgpd/bgp_debug.h" | |
35 | #include "bgpd/bgp_errors.h" | |
36 | #include "bgpd/bgp_aspath.h" | |
37 | #include "bgpd/bgp_zebra.h" | |
38 | #include "bgpd/bgp_addpath.h" | |
c44ab6f1 | 39 | #include "bgpd/bgp_label.h" |
c589d847 | 40 | #include "bgpd/bgp_nht.h" |
6348981a | 41 | #include "bgpd/bgp_mpath.h" |
23aa35ad | 42 | #include "bgpd/bgp_trace.h" |
c44ab6f1 AK |
43 | |
44 | static void bgp_evpn_local_es_down(struct bgp *bgp, | |
45 | struct bgp_evpn_es *es); | |
46 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
47 | struct bgp_evpn_es *es); | |
48 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
49 | struct bgp_evpn_es *es, |
50 | struct in_addr vtep_ip, | |
51 | bool esr, uint8_t df_alg, | |
52 | uint16_t df_pref); | |
c44ab6f1 AK |
53 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, |
54 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr); | |
55 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es); | |
56 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es); | |
333ad64b AK |
57 | static struct bgp_evpn_es_evi * |
58 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi); | |
c589d847 AK |
59 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es); |
60 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es); | |
26c03e43 AK |
61 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi); |
62 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller); | |
60605cbc | 63 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info); |
74efb822 AK |
64 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, |
65 | bool is_local); | |
c44ab6f1 AK |
66 | |
67 | esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; | |
cc9f21da | 68 | static void bgp_evpn_run_consistency_checks(struct thread *t); |
090efa2f AK |
69 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info); |
70 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info); | |
c44ab6f1 AK |
71 | |
72 | /****************************************************************************** | |
73 | * per-ES (Ethernet Segment) routing table | |
74 | * | |
75 | * Following routes are added to the ES's routing table - | |
76 | * 1. Local and remote ESR (Type-4) | |
77 | * 2. Local EAD-per-ES (Type-1). | |
78 | * | |
79 | * Key for these routes is {ESI, VTEP-IP} so the path selection is practically | |
80 | * a no-op i.e. all paths lead to same VTEP-IP (i.e. result in the same VTEP | |
81 | * being added to same ES). | |
82 | * | |
83 | * Note the following routes go into the VNI routing table (instead of the | |
84 | * ES routing table) - | |
85 | * 1. Remote EAD-per-ES | |
86 | * 2. Local and remote EAD-per-EVI | |
185fb14a | 87 | */ |
185fb14a | 88 | |
c44ab6f1 AK |
89 | /* Calculate the best path for a multi-homing (Type-1 or Type-4) route |
90 | * installed in the ES's routing table. | |
185fb14a | 91 | */ |
c44ab6f1 | 92 | static int bgp_evpn_es_route_select_install(struct bgp *bgp, |
09319b4e DS |
93 | struct bgp_evpn_es *es, |
94 | struct bgp_dest *dest) | |
185fb14a AK |
95 | { |
96 | int ret = 0; | |
97 | afi_t afi = AFI_L2VPN; | |
98 | safi_t safi = SAFI_EVPN; | |
99 | struct bgp_path_info *old_select; /* old best */ | |
100 | struct bgp_path_info *new_select; /* new best */ | |
101 | struct bgp_path_info_pair old_and_new; | |
102 | ||
103 | /* Compute the best path. */ | |
09319b4e DS |
104 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
105 | afi, safi); | |
185fb14a AK |
106 | old_select = old_and_new.old; |
107 | new_select = old_and_new.new; | |
108 | ||
109 | /* | |
110 | * If the best path hasn't changed - see if something needs to be | |
111 | * updated | |
112 | */ | |
113 | if (old_select && old_select == new_select | |
09319b4e DS |
114 | && old_select->type == ZEBRA_ROUTE_BGP |
115 | && old_select->sub_type == BGP_ROUTE_IMPORTED | |
116 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) | |
117 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) | |
118 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { | |
185fb14a | 119 | if (bgp_zebra_has_route_changed(old_select)) { |
74e2bd89 AK |
120 | bgp_evpn_es_vtep_add(bgp, es, old_select->attr->nexthop, |
121 | true /*esr*/, | |
122 | old_select->attr->df_alg, | |
123 | old_select->attr->df_pref); | |
185fb14a AK |
124 | } |
125 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); | |
09319b4e | 126 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
127 | return ret; |
128 | } | |
129 | ||
130 | /* If the user did a "clear" this flag will be set */ | |
09319b4e | 131 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
185fb14a | 132 | |
c44ab6f1 | 133 | /* bestpath has changed; update relevant fields and install or uninstall |
185fb14a AK |
134 | * into the zebra RIB. |
135 | */ | |
136 | if (old_select || new_select) | |
09319b4e | 137 | bgp_bump_version(dest); |
185fb14a AK |
138 | |
139 | if (old_select) | |
09319b4e | 140 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
185fb14a | 141 | if (new_select) { |
09319b4e DS |
142 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
143 | bgp_path_info_unset_flag(dest, new_select, | |
144 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
145 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
146 | } | |
147 | ||
148 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 | 149 | && new_select->sub_type == BGP_ROUTE_IMPORTED) { |
74e2bd89 AK |
150 | bgp_evpn_es_vtep_add(bgp, es, new_select->attr->nexthop, |
151 | true /*esr */, new_select->attr->df_alg, | |
152 | new_select->attr->df_pref); | |
185fb14a AK |
153 | } else { |
154 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
155 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
156 | bgp_evpn_es_vtep_del( | |
157 | bgp, es, old_select->attr->nexthop, | |
158 | true /*esr*/); | |
185fb14a AK |
159 | } |
160 | ||
161 | /* Clear any route change flags. */ | |
09319b4e | 162 | bgp_zebra_clear_route_change_flags(dest); |
185fb14a AK |
163 | |
164 | /* Reap old select bgp_path_info, if it has been removed */ | |
165 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) | |
09319b4e | 166 | bgp_path_info_reap(dest, old_select); |
185fb14a AK |
167 | |
168 | return ret; | |
169 | } | |
170 | ||
c44ab6f1 AK |
171 | /* Install Type-1/Type-4 route entry in the per-ES routing table */ |
172 | static int bgp_evpn_es_route_install(struct bgp *bgp, | |
173 | struct bgp_evpn_es *es, struct prefix_evpn *p, | |
174 | struct bgp_path_info *parent_pi) | |
175 | { | |
176 | int ret = 0; | |
09319b4e | 177 | struct bgp_dest *dest = NULL; |
c44ab6f1 AK |
178 | struct bgp_path_info *pi = NULL; |
179 | struct attr *attr_new = NULL; | |
180 | ||
181 | /* Create (or fetch) route within the VNI. | |
182 | * NOTE: There is no RD here. | |
183 | */ | |
09319b4e | 184 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
c44ab6f1 AK |
185 | |
186 | /* Check if route entry is already present. */ | |
09319b4e | 187 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
671ec576 | 188 | if (pi->extra && |
189 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
c44ab6f1 AK |
190 | break; |
191 | ||
192 | if (!pi) { | |
193 | /* Add (or update) attribute to hash. */ | |
194 | attr_new = bgp_attr_intern(parent_pi->attr); | |
195 | ||
196 | /* Create new route with its attribute. */ | |
197 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, | |
09319b4e | 198 | parent_pi->peer, attr_new, dest); |
c44ab6f1 AK |
199 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
200 | bgp_path_info_extra_get(pi); | |
201 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
09319b4e DS |
202 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); |
203 | bgp_path_info_add(dest, pi); | |
c44ab6f1 AK |
204 | } else { |
205 | if (attrhash_cmp(pi->attr, parent_pi->attr) | |
206 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
09319b4e | 207 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
208 | return 0; |
209 | } | |
210 | /* The attribute has changed. */ | |
211 | /* Add (or update) attribute to hash. */ | |
212 | attr_new = bgp_attr_intern(parent_pi->attr); | |
213 | ||
214 | /* Restore route, if needed. */ | |
215 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 216 | bgp_path_info_restore(dest, pi); |
c44ab6f1 AK |
217 | |
218 | /* Mark if nexthop has changed. */ | |
219 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
220 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
221 | ||
222 | /* Unintern existing, set to new. */ | |
223 | bgp_attr_unintern(&pi->attr); | |
224 | pi->attr = attr_new; | |
083ec940 | 225 | pi->uptime = monotime(NULL); |
c44ab6f1 AK |
226 | } |
227 | ||
228 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 229 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 | 230 | |
09319b4e | 231 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
232 | |
233 | return ret; | |
234 | } | |
235 | ||
236 | /* Uninstall Type-1/Type-4 route entry from the ES routing table */ | |
237 | static int bgp_evpn_es_route_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, | |
238 | struct prefix_evpn *p, struct bgp_path_info *parent_pi) | |
239 | { | |
240 | int ret; | |
09319b4e | 241 | struct bgp_dest *dest; |
c44ab6f1 AK |
242 | struct bgp_path_info *pi; |
243 | ||
244 | if (!es->route_table) | |
245 | return 0; | |
246 | ||
247 | /* Locate route within the ESI. | |
248 | * NOTE: There is no RD here. | |
249 | */ | |
09319b4e DS |
250 | dest = bgp_node_lookup(es->route_table, (struct prefix *)p); |
251 | if (!dest) | |
c44ab6f1 AK |
252 | return 0; |
253 | ||
254 | /* Find matching route entry. */ | |
09319b4e | 255 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
c44ab6f1 AK |
256 | if (pi->extra |
257 | && (struct bgp_path_info *)pi->extra->parent == | |
258 | parent_pi) | |
259 | break; | |
260 | ||
e71ad4b6 DA |
261 | if (!pi) { |
262 | bgp_dest_unlock_node(dest); | |
c44ab6f1 | 263 | return 0; |
e71ad4b6 | 264 | } |
c44ab6f1 AK |
265 | |
266 | /* Mark entry for deletion */ | |
09319b4e | 267 | bgp_path_info_delete(dest, pi); |
c44ab6f1 AK |
268 | |
269 | /* Perform route selection and update zebra, if required. */ | |
09319b4e | 270 | ret = bgp_evpn_es_route_select_install(bgp, es, dest); |
c44ab6f1 AK |
271 | |
272 | /* Unlock route node. */ | |
09319b4e | 273 | bgp_dest_unlock_node(dest); |
c44ab6f1 AK |
274 | |
275 | return ret; | |
276 | } | |
277 | ||
fff7545a | 278 | /* Install or unistall a Type-4 route in the per-ES routing table */ |
c44ab6f1 AK |
279 | int bgp_evpn_es_route_install_uninstall(struct bgp *bgp, struct bgp_evpn_es *es, |
280 | afi_t afi, safi_t safi, struct prefix_evpn *evp, | |
281 | struct bgp_path_info *pi, int install) | |
282 | { | |
283 | int ret = 0; | |
284 | ||
285 | if (install) | |
286 | ret = bgp_evpn_es_route_install(bgp, es, evp, pi); | |
287 | else | |
288 | ret = bgp_evpn_es_route_uninstall(bgp, es, evp, pi); | |
289 | ||
290 | if (ret) { | |
291 | flog_err( | |
292 | EC_BGP_EVPN_FAIL, | |
293 | "%u: Failed to %s EVPN %s route in ESI %s", | |
294 | bgp->vrf_id, | |
295 | install ? "install" : "uninstall", | |
296 | "ES", es->esi_str); | |
297 | return ret; | |
298 | } | |
299 | return 0; | |
300 | } | |
301 | ||
302 | /* Delete (and withdraw) local routes for specified ES from global and ES table. | |
303 | * Also remove all remote routes from the per ES table. Invoked when ES | |
304 | * is deleted. | |
185fb14a | 305 | */ |
c44ab6f1 AK |
306 | static void bgp_evpn_es_route_del_all(struct bgp *bgp, struct bgp_evpn_es *es) |
307 | { | |
09319b4e | 308 | struct bgp_dest *dest; |
c44ab6f1 AK |
309 | struct bgp_path_info *pi, *nextpi; |
310 | ||
311 | /* de-activate the ES */ | |
312 | bgp_evpn_local_es_down(bgp, es); | |
313 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
314 | ||
315 | /* Walk this ES's routing table and delete all routes. */ | |
09319b4e DS |
316 | for (dest = bgp_table_top(es->route_table); dest; |
317 | dest = bgp_route_next(dest)) { | |
318 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
319 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
320 | bgp_path_info_delete(dest, pi); | |
321 | bgp_path_info_reap(dest, pi); | |
c44ab6f1 AK |
322 | } |
323 | } | |
324 | } | |
325 | ||
326 | /***************************************************************************** | |
327 | * Base APIs for creating MH routes (Type-1 or Type-4) on local ethernet | |
328 | * segment updates. | |
329 | */ | |
330 | ||
331 | /* create or update local EVPN type1/type4 route entry. | |
332 | * | |
333 | * This could be in - | |
334 | * the ES table if ESR/EAD-ES (or) | |
335 | * the VNI table if EAD-EVI (or) | |
336 | * the global table if ESR/EAD-ES/EAD-EVI | |
337 | * | |
338 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
339 | * ESR). | |
340 | */ | |
d60f63f0 AD |
341 | int bgp_evpn_mh_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
342 | struct bgpevpn *vpn, afi_t afi, safi_t safi, | |
e0a79881 | 343 | struct bgp_dest *dest, struct attr *attr, |
d60f63f0 | 344 | struct bgp_path_info **ri, int *route_changed) |
185fb14a | 345 | { |
185fb14a AK |
346 | struct bgp_path_info *tmp_pi = NULL; |
347 | struct bgp_path_info *local_pi = NULL; /* local route entry if any */ | |
348 | struct bgp_path_info *remote_pi = NULL; /* remote route entry if any */ | |
349 | struct attr *attr_new = NULL; | |
c44ab6f1 | 350 | struct prefix_evpn *evp; |
185fb14a AK |
351 | |
352 | *ri = NULL; | |
752eed47 | 353 | evp = (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
c44ab6f1 | 354 | *route_changed = 1; |
185fb14a AK |
355 | |
356 | /* locate the local and remote entries if any */ | |
09319b4e | 357 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
185fb14a AK |
358 | tmp_pi = tmp_pi->next) { |
359 | if (tmp_pi->peer == bgp->peer_self | |
c44ab6f1 AK |
360 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
361 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
185fb14a AK |
362 | local_pi = tmp_pi; |
363 | if (tmp_pi->type == ZEBRA_ROUTE_BGP | |
c44ab6f1 AK |
364 | && tmp_pi->sub_type == BGP_ROUTE_IMPORTED |
365 | && CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
185fb14a AK |
366 | remote_pi = tmp_pi; |
367 | } | |
368 | ||
fff7545a | 369 | /* we don't expect to see a remote_pi at this point as |
c44ab6f1 AK |
370 | * an ES route has {esi, vtep_ip} as the key in the ES-rt-table |
371 | * in the VNI-rt-table. | |
185fb14a AK |
372 | */ |
373 | if (remote_pi) { | |
374 | flog_err( | |
23d0a753 | 375 | EC_BGP_ES_INVALID, |
46281b21 | 376 | "%u ERROR: local es route for ESI: %s vtep %pI4 also learnt from remote", |
d60f63f0 | 377 | bgp->vrf_id, es ? es->esi_str : "Null", |
46281b21 | 378 | es ? &es->originator_ip : NULL); |
185fb14a AK |
379 | return -1; |
380 | } | |
381 | ||
185fb14a AK |
382 | /* create or update the entry */ |
383 | if (!local_pi) { | |
384 | ||
385 | /* Add or update attribute to hash */ | |
386 | attr_new = bgp_attr_intern(attr); | |
387 | ||
388 | /* Create new route with its attribute. */ | |
389 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, | |
09319b4e | 390 | bgp->peer_self, attr_new, dest); |
185fb14a AK |
391 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
392 | ||
c44ab6f1 AK |
393 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
394 | bgp_path_info_extra_get(tmp_pi); | |
395 | tmp_pi->extra->num_labels = 1; | |
396 | if (vpn) | |
397 | vni2label(vpn->vni, &tmp_pi->extra->label[0]); | |
398 | else | |
399 | tmp_pi->extra->label[0] = 0; | |
400 | } | |
401 | ||
185fb14a | 402 | /* add the newly created path to the route-node */ |
09319b4e | 403 | bgp_path_info_add(dest, tmp_pi); |
185fb14a AK |
404 | } else { |
405 | tmp_pi = local_pi; | |
406 | if (attrhash_cmp(tmp_pi->attr, attr) | |
c44ab6f1 | 407 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
185fb14a AK |
408 | *route_changed = 0; |
409 | else { | |
410 | /* The attribute has changed. | |
411 | * Add (or update) attribute to hash. | |
412 | */ | |
413 | attr_new = bgp_attr_intern(attr); | |
09319b4e DS |
414 | bgp_path_info_set_flag(dest, tmp_pi, |
415 | BGP_PATH_ATTR_CHANGED); | |
185fb14a AK |
416 | |
417 | /* Restore route, if needed. */ | |
418 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
09319b4e | 419 | bgp_path_info_restore(dest, tmp_pi); |
185fb14a AK |
420 | |
421 | /* Unintern existing, set to new. */ | |
422 | bgp_attr_unintern(&tmp_pi->attr); | |
423 | tmp_pi->attr = attr_new; | |
083ec940 | 424 | tmp_pi->uptime = monotime(NULL); |
185fb14a AK |
425 | } |
426 | } | |
427 | ||
c44ab6f1 AK |
428 | if (*route_changed) { |
429 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
23d0a753 DA |
430 | zlog_debug( |
431 | "local ES %s vni %u route-type %s nexthop %pI4 updated", | |
d60f63f0 | 432 | es ? es->esi_str : "Null", vpn ? vpn->vni : 0, |
23d0a753 DA |
433 | evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
434 | ? "esr" | |
435 | : (vpn ? "ead-evi" : "ead-es"), | |
436 | &attr->mp_nexthop_global_in); | |
c44ab6f1 AK |
437 | } |
438 | ||
185fb14a AK |
439 | /* Return back the route entry. */ |
440 | *ri = tmp_pi; | |
441 | return 0; | |
442 | } | |
443 | ||
c44ab6f1 AK |
444 | /* Delete local EVPN ESR (type-4) and EAD (type-1) route |
445 | * | |
446 | * Note: vpn is applicable only to EAD-EVI routes (NULL for EAD-ES and | |
447 | * ESR). | |
448 | */ | |
449 | static int bgp_evpn_mh_route_delete(struct bgp *bgp, struct bgp_evpn_es *es, | |
7b0db0e4 AK |
450 | struct bgpevpn *vpn, |
451 | struct bgp_evpn_es_frag *es_frag, | |
452 | struct prefix_evpn *p) | |
185fb14a | 453 | { |
185fb14a AK |
454 | afi_t afi = AFI_L2VPN; |
455 | safi_t safi = SAFI_EVPN; | |
c44ab6f1 | 456 | struct bgp_path_info *pi; |
09319b4e DS |
457 | struct bgp_dest *dest = NULL; /* dest in esi table */ |
458 | struct bgp_dest *global_dest = NULL; /* dest in global table */ | |
c44ab6f1 AK |
459 | struct bgp_table *rt_table; |
460 | struct prefix_rd *prd; | |
185fb14a | 461 | |
c44ab6f1 | 462 | if (vpn) { |
852d9f97 | 463 | rt_table = vpn->ip_table; |
c44ab6f1 AK |
464 | prd = &vpn->prd; |
465 | } else { | |
466 | rt_table = es->route_table; | |
7b0db0e4 | 467 | prd = &es_frag->prd; |
c44ab6f1 | 468 | } |
185fb14a | 469 | |
c44ab6f1 AK |
470 | /* First, locate the route node within the ESI or VNI. |
471 | * If it doesn't exist, ther is nothing to do. | |
472 | * Note: there is no RD here. | |
473 | */ | |
09319b4e DS |
474 | dest = bgp_node_lookup(rt_table, (struct prefix *)p); |
475 | if (!dest) | |
c44ab6f1 | 476 | return 0; |
185fb14a | 477 | |
c44ab6f1 | 478 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
23d0a753 DA |
479 | zlog_debug( |
480 | "local ES %s vni %u route-type %s nexthop %pI4 delete", | |
481 | es->esi_str, vpn ? vpn->vni : 0, | |
482 | p->prefix.route_type == BGP_EVPN_ES_ROUTE | |
483 | ? "esr" | |
484 | : (vpn ? "ead-evi" : "ead-es"), | |
485 | &es->originator_ip); | |
185fb14a | 486 | |
c44ab6f1 AK |
487 | /* Next, locate route node in the global EVPN routing table. |
488 | * Note that this table is a 2-level tree (RD-level + Prefix-level) | |
489 | */ | |
34c7f35f SW |
490 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
491 | safi, p, prd, NULL); | |
09319b4e | 492 | if (global_dest) { |
185fb14a | 493 | |
c44ab6f1 | 494 | /* Delete route entry in the global EVPN table. */ |
09319b4e | 495 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
185fb14a AK |
496 | |
497 | /* Schedule for processing - withdraws to peers happen from | |
498 | * this table. | |
499 | */ | |
500 | if (pi) | |
09319b4e DS |
501 | bgp_process(bgp, global_dest, afi, safi); |
502 | bgp_dest_unlock_node(global_dest); | |
185fb14a AK |
503 | } |
504 | ||
505 | /* | |
c44ab6f1 | 506 | * Delete route entry in the ESI or VNI routing table. |
185fb14a AK |
507 | * This can just be removed. |
508 | */ | |
09319b4e | 509 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
185fb14a | 510 | if (pi) |
09319b4e DS |
511 | bgp_path_info_reap(dest, pi); |
512 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
513 | return 0; |
514 | } | |
515 | ||
d60f63f0 AD |
516 | /* |
517 | * This function is called when the VNI RD changes. | |
518 | * Delete all EAD/EVI local routes for this VNI from the global routing table. | |
519 | * These routes are scheduled for withdraw from peers. | |
520 | */ | |
521 | int delete_global_ead_evi_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
522 | { | |
523 | afi_t afi; | |
524 | safi_t safi; | |
525 | struct bgp_dest *rdrn, *rn; | |
526 | struct bgp_table *table; | |
527 | struct bgp_path_info *pi; | |
528 | ||
529 | afi = AFI_L2VPN; | |
530 | safi = SAFI_EVPN; | |
531 | ||
532 | /* Find the RD node for the VNI in the global table */ | |
533 | rdrn = bgp_node_lookup(bgp->rib[afi][safi], (struct prefix *)&vpn->prd); | |
534 | if (rdrn && bgp_dest_has_bgp_path_info_data(rdrn)) { | |
535 | table = bgp_dest_get_bgp_table_info(rdrn); | |
536 | ||
537 | /* | |
538 | * Iterate over all the routes in this table and delete EAD/EVI | |
539 | * routes | |
540 | */ | |
541 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
542 | struct prefix_evpn *evp = (struct prefix_evpn *)&rn->p; | |
543 | ||
544 | if (evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
545 | continue; | |
546 | ||
547 | delete_evpn_route_entry(bgp, afi, safi, rn, &pi); | |
548 | if (pi) | |
549 | bgp_process(bgp, rn, afi, safi); | |
550 | } | |
551 | } | |
552 | ||
553 | /* Unlock RD node. */ | |
554 | if (rdrn) | |
555 | bgp_dest_unlock_node(rdrn); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
c44ab6f1 AK |
560 | /***************************************************************************** |
561 | * Ethernet Segment (Type-4) Routes | |
74e2bd89 AK |
562 | * ESRs are used for DF election. Currently service-carving described in |
563 | * RFC 7432 is NOT supported. Instead preference based DF election is | |
564 | * used by default. | |
565 | * Reference: draft-ietf-bess-evpn-pref-df | |
185fb14a | 566 | */ |
c44ab6f1 AK |
567 | /* Build extended community for EVPN ES (type-4) route */ |
568 | static void bgp_evpn_type4_route_extcomm_build(struct bgp_evpn_es *es, | |
569 | struct attr *attr) | |
185fb14a | 570 | { |
c44ab6f1 AK |
571 | struct ecommunity ecom_encap; |
572 | struct ecommunity ecom_es_rt; | |
74e2bd89 | 573 | struct ecommunity ecom_df; |
c44ab6f1 AK |
574 | struct ecommunity_val eval; |
575 | struct ecommunity_val eval_es_rt; | |
74e2bd89 | 576 | struct ecommunity_val eval_df; |
c44ab6f1 AK |
577 | bgp_encap_types tnl_type; |
578 | struct ethaddr mac; | |
185fb14a | 579 | |
c44ab6f1 AK |
580 | /* Encap */ |
581 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
582 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
583 | encode_encap_extcomm(tnl_type, &eval); | |
584 | ecom_encap.size = 1; | |
34540b0d | 585 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 586 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 587 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
185fb14a | 588 | |
c44ab6f1 | 589 | /* ES import RT */ |
6006b807 | 590 | memset(&mac, 0, sizeof(mac)); |
c44ab6f1 AK |
591 | memset(&ecom_es_rt, 0, sizeof(ecom_es_rt)); |
592 | es_get_system_mac(&es->esi, &mac); | |
593 | encode_es_rt_extcomm(&eval_es_rt, &mac); | |
594 | ecom_es_rt.size = 1; | |
34540b0d | 595 | ecom_es_rt.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 596 | ecom_es_rt.val = (uint8_t *)eval_es_rt.val; |
b53e67a3 DA |
597 | bgp_attr_set_ecommunity( |
598 | attr, | |
599 | ecommunity_merge(bgp_attr_get_ecommunity(attr), &ecom_es_rt)); | |
185fb14a | 600 | |
74e2bd89 AK |
601 | /* DF election extended community */ |
602 | memset(&ecom_df, 0, sizeof(ecom_df)); | |
603 | encode_df_elect_extcomm(&eval_df, es->df_pref); | |
604 | ecom_df.size = 1; | |
605 | ecom_df.val = (uint8_t *)eval_df.val; | |
b53e67a3 DA |
606 | bgp_attr_set_ecommunity( |
607 | attr, | |
608 | ecommunity_merge(bgp_attr_get_ecommunity(attr), &ecom_df)); | |
185fb14a AK |
609 | } |
610 | ||
c44ab6f1 AK |
611 | /* Create or update local type-4 route */ |
612 | static int bgp_evpn_type4_route_update(struct bgp *bgp, | |
613 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a AK |
614 | { |
615 | int ret = 0; | |
c44ab6f1 AK |
616 | int route_changed = 0; |
617 | afi_t afi = AFI_L2VPN; | |
618 | safi_t safi = SAFI_EVPN; | |
619 | struct attr attr; | |
620 | struct attr *attr_new = NULL; | |
09319b4e | 621 | struct bgp_dest *dest = NULL; |
185fb14a | 622 | struct bgp_path_info *pi = NULL; |
185fb14a | 623 | |
6006b807 | 624 | memset(&attr, 0, sizeof(attr)); |
c44ab6f1 AK |
625 | |
626 | /* Build path-attribute for this route. */ | |
0f05ea43 | 627 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
c44ab6f1 AK |
628 | attr.nexthop = es->originator_ip; |
629 | attr.mp_nexthop_global_in = es->originator_ip; | |
630 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
631 | ||
632 | /* Set up extended community. */ | |
633 | bgp_evpn_type4_route_extcomm_build(es, &attr); | |
634 | ||
635 | /* First, create (or fetch) route node within the ESI. */ | |
636 | /* NOTE: There is no RD here. */ | |
09319b4e | 637 | dest = bgp_node_get(es->route_table, (struct prefix *)p); |
185fb14a | 638 | |
c44ab6f1 | 639 | /* Create or update route entry. */ |
e0a79881 | 640 | ret = bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, &attr, |
09319b4e | 641 | &pi, &route_changed); |
ec779825 | 642 | if (ret != 0) |
23d0a753 DA |
643 | flog_err( |
644 | EC_BGP_ES_INVALID, | |
645 | "%u ERROR: Failed to updated ES route ESI: %s VTEP %pI4", | |
646 | bgp->vrf_id, es->esi_str, &es->originator_ip); | |
185fb14a | 647 | |
c44ab6f1 AK |
648 | assert(pi); |
649 | attr_new = pi->attr; | |
185fb14a | 650 | |
c44ab6f1 AK |
651 | /* Perform route selection; |
652 | * this is just to set the flags correctly | |
653 | * as local route in the ES always wins. | |
654 | */ | |
09319b4e DS |
655 | bgp_evpn_es_route_select_install(bgp, es, dest); |
656 | bgp_dest_unlock_node(dest); | |
185fb14a | 657 | |
c44ab6f1 AK |
658 | /* If this is a new route or some attribute has changed, export the |
659 | * route to the global table. The route will be advertised to peers | |
660 | * from there. Note that this table is a 2-level tree (RD-level + | |
661 | * Prefix-level) similar to L3VPN routes. | |
662 | */ | |
663 | if (route_changed) { | |
664 | struct bgp_path_info *global_pi; | |
185fb14a | 665 | |
34c7f35f SW |
666 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
667 | p, &es->es_base_frag->prd, | |
668 | NULL); | |
09319b4e | 669 | bgp_evpn_mh_route_update(bgp, es, NULL, afi, safi, dest, |
e0a79881 | 670 | attr_new, &global_pi, &route_changed); |
185fb14a | 671 | |
c44ab6f1 | 672 | /* Schedule for processing and unlock node. */ |
09319b4e DS |
673 | bgp_process(bgp, dest, afi, safi); |
674 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
675 | } |
676 | ||
c44ab6f1 AK |
677 | /* Unintern temporary. */ |
678 | aspath_unintern(&attr.aspath); | |
679 | return 0; | |
185fb14a AK |
680 | } |
681 | ||
c44ab6f1 AK |
682 | /* Delete local type-4 route */ |
683 | static int bgp_evpn_type4_route_delete(struct bgp *bgp, | |
684 | struct bgp_evpn_es *es, struct prefix_evpn *p) | |
185fb14a | 685 | { |
7b0db0e4 AK |
686 | if (!es->es_base_frag) |
687 | return -1; | |
688 | ||
689 | return bgp_evpn_mh_route_delete(bgp, es, NULL /* l2vni */, | |
690 | es->es_base_frag, p); | |
c44ab6f1 | 691 | } |
185fb14a | 692 | |
c44ab6f1 AK |
693 | /* Process remote/received EVPN type-4 route (advertise or withdraw) */ |
694 | int bgp_evpn_type4_route_process(struct peer *peer, afi_t afi, safi_t safi, | |
695 | struct attr *attr, uint8_t *pfx, int psize, | |
696 | uint32_t addpath_id) | |
697 | { | |
c44ab6f1 AK |
698 | esi_t esi; |
699 | uint8_t ipaddr_len; | |
700 | struct in_addr vtep_ip; | |
701 | struct prefix_rd prd; | |
702 | struct prefix_evpn p; | |
185fb14a | 703 | |
c44ab6f1 AK |
704 | /* Type-4 route should be either 23 or 35 bytes |
705 | * RD (8), ESI (10), ip-len (1), ip (4 or 16) | |
185fb14a | 706 | */ |
c44ab6f1 AK |
707 | if (psize != BGP_EVPN_TYPE4_V4_PSIZE && |
708 | psize != BGP_EVPN_TYPE4_V6_PSIZE) { | |
709 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
710 | "%u:%s - Rx EVPN Type-4 NLRI with invalid length %d", | |
711 | peer->bgp->vrf_id, peer->host, psize); | |
712 | return -1; | |
713 | } | |
185fb14a | 714 | |
c44ab6f1 AK |
715 | /* Make prefix_rd */ |
716 | prd.family = AF_UNSPEC; | |
717 | prd.prefixlen = 64; | |
718 | memcpy(&prd.val, pfx, RD_BYTES); | |
719 | pfx += RD_BYTES; | |
185fb14a | 720 | |
c44ab6f1 AK |
721 | /* get the ESI */ |
722 | memcpy(&esi, pfx, ESI_BYTES); | |
723 | pfx += ESI_BYTES; | |
185fb14a | 724 | |
185fb14a | 725 | |
c44ab6f1 AK |
726 | /* Get the IP. */ |
727 | ipaddr_len = *pfx++; | |
728 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
729 | memcpy(&vtep_ip, pfx, IPV4_MAX_BYTELEN); | |
730 | } else { | |
731 | flog_err( | |
732 | EC_BGP_EVPN_ROUTE_INVALID, | |
733 | "%u:%s - Rx EVPN Type-4 NLRI with unsupported IP address length %d", | |
734 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
735 | return -1; | |
736 | } | |
185fb14a | 737 | |
c44ab6f1 AK |
738 | build_evpn_type4_prefix(&p, &esi, vtep_ip); |
739 | /* Process the route. */ | |
740 | if (attr) { | |
367b458c DS |
741 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
742 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, | |
743 | 0, 0, NULL); | |
c44ab6f1 | 744 | } else { |
bf0c6163 DA |
745 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, afi, safi, |
746 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, 0, | |
747 | NULL); | |
c44ab6f1 | 748 | } |
367b458c | 749 | return 0; |
185fb14a AK |
750 | } |
751 | ||
c44ab6f1 AK |
752 | /* Check if a prefix belongs to the local ES */ |
753 | static bool bgp_evpn_type4_prefix_match(struct prefix_evpn *p, | |
754 | struct bgp_evpn_es *es) | |
185fb14a | 755 | { |
c44ab6f1 AK |
756 | return (p->prefix.route_type == BGP_EVPN_ES_ROUTE) && |
757 | !memcmp(&p->prefix.es_addr.esi, &es->esi, sizeof(esi_t)); | |
185fb14a AK |
758 | } |
759 | ||
c44ab6f1 AK |
760 | /* Import remote ESRs on local ethernet segment add */ |
761 | static int bgp_evpn_type4_remote_routes_import(struct bgp *bgp, | |
762 | struct bgp_evpn_es *es, bool install) | |
185fb14a AK |
763 | { |
764 | int ret; | |
765 | afi_t afi; | |
766 | safi_t safi; | |
09319b4e | 767 | struct bgp_dest *rd_dest, *dest; |
185fb14a AK |
768 | struct bgp_table *table; |
769 | struct bgp_path_info *pi; | |
770 | ||
771 | afi = AFI_L2VPN; | |
772 | safi = SAFI_EVPN; | |
773 | ||
c44ab6f1 AK |
774 | /* Walk entire global routing table and evaluate routes which could be |
775 | * imported into this Ethernet Segment. | |
185fb14a | 776 | */ |
09319b4e DS |
777 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
778 | rd_dest = bgp_route_next(rd_dest)) { | |
779 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
185fb14a AK |
780 | if (!table) |
781 | continue; | |
782 | ||
09319b4e DS |
783 | for (dest = bgp_table_top(table); dest; |
784 | dest = bgp_route_next(dest)) { | |
785 | struct prefix_evpn *evp = | |
752eed47 | 786 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); |
185fb14a | 787 | |
09319b4e DS |
788 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
789 | pi = pi->next) { | |
185fb14a AK |
790 | /* |
791 | * Consider "valid" remote routes applicable for | |
792 | * this ES. | |
793 | */ | |
794 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
c44ab6f1 AK |
795 | && pi->type == ZEBRA_ROUTE_BGP |
796 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
185fb14a AK |
797 | continue; |
798 | ||
c44ab6f1 | 799 | if (!bgp_evpn_type4_prefix_match(evp, es)) |
185fb14a AK |
800 | continue; |
801 | ||
802 | if (install) | |
c44ab6f1 AK |
803 | ret = bgp_evpn_es_route_install( |
804 | bgp, es, evp, pi); | |
185fb14a | 805 | else |
c44ab6f1 AK |
806 | ret = bgp_evpn_es_route_uninstall( |
807 | bgp, es, evp, pi); | |
185fb14a AK |
808 | |
809 | if (ret) { | |
810 | flog_err( | |
2dbe669b DA |
811 | EC_BGP_EVPN_FAIL, |
812 | "Failed to %s EVPN %pFX route in ESI %s", | |
813 | install ? "install" | |
185fb14a | 814 | : "uninstall", |
2dbe669b | 815 | evp, es->esi_str); |
dc52bece DS |
816 | |
817 | bgp_dest_unlock_node(rd_dest); | |
818 | bgp_dest_unlock_node(dest); | |
185fb14a AK |
819 | return ret; |
820 | } | |
821 | } | |
822 | } | |
823 | } | |
824 | return 0; | |
825 | } | |
826 | ||
c44ab6f1 AK |
827 | /***************************************************************************** |
828 | * Ethernet Auto Discovery (EAD/Type-1) route handling | |
829 | * There are two types of EAD routes - | |
830 | * 1. EAD-per-ES - Key: {ESI, ET=0xffffffff} | |
831 | * 2. EAD-per-EVI - Key: {ESI, ET=0} | |
185fb14a | 832 | */ |
185fb14a | 833 | |
c44ab6f1 | 834 | /* Extended communities associated with EAD-per-ES */ |
7b0db0e4 AK |
835 | static void |
836 | bgp_evpn_type1_es_route_extcomm_build(struct bgp_evpn_es_frag *es_frag, | |
837 | struct attr *attr) | |
185fb14a | 838 | { |
c44ab6f1 AK |
839 | struct ecommunity ecom_encap; |
840 | struct ecommunity ecom_esi_label; | |
841 | struct ecommunity_val eval; | |
842 | struct ecommunity_val eval_esi_label; | |
843 | bgp_encap_types tnl_type; | |
844 | struct listnode *evi_node, *rt_node; | |
845 | struct ecommunity *ecom; | |
846 | struct bgp_evpn_es_evi *es_evi; | |
185fb14a | 847 | |
c44ab6f1 AK |
848 | /* Encap */ |
849 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
850 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
851 | encode_encap_extcomm(tnl_type, &eval); | |
852 | ecom_encap.size = 1; | |
34540b0d | 853 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 854 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 855 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
185fb14a | 856 | |
c44ab6f1 AK |
857 | /* ESI label */ |
858 | encode_esi_label_extcomm(&eval_esi_label, | |
859 | false /*single_active*/); | |
860 | ecom_esi_label.size = 1; | |
34540b0d | 861 | ecom_esi_label.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 862 | ecom_esi_label.val = (uint8_t *)eval_esi_label.val; |
b53e67a3 DA |
863 | bgp_attr_set_ecommunity(attr, |
864 | ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
865 | &ecom_esi_label)); | |
c44ab6f1 AK |
866 | |
867 | /* Add export RTs for all L2-VNIs associated with this ES */ | |
868 | /* XXX - suppress EAD-ES advertisment if there are no EVIs associated | |
869 | * with it. | |
870 | */ | |
f4a5218d AK |
871 | if (listcount(bgp_mh_info->ead_es_export_rtl)) { |
872 | for (ALL_LIST_ELEMENTS_RO(bgp_mh_info->ead_es_export_rtl, | |
873 | rt_node, ecom)) | |
b53e67a3 | 874 | bgp_attr_set_ecommunity( |
f4a5218d AK |
875 | attr, ecommunity_merge(attr->ecommunity, ecom)); |
876 | } else { | |
7b0db0e4 AK |
877 | for (ALL_LIST_ELEMENTS_RO(es_frag->es_evi_frag_list, evi_node, |
878 | es_evi)) { | |
f4a5218d AK |
879 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) |
880 | continue; | |
881 | for (ALL_LIST_ELEMENTS_RO(es_evi->vpn->export_rtl, | |
882 | rt_node, ecom)) | |
883 | bgp_attr_set_ecommunity( | |
884 | attr, ecommunity_merge(attr->ecommunity, | |
885 | ecom)); | |
886 | } | |
c44ab6f1 | 887 | } |
c44ab6f1 AK |
888 | } |
889 | ||
890 | /* Extended communities associated with EAD-per-EVI */ | |
891 | static void bgp_evpn_type1_evi_route_extcomm_build(struct bgp_evpn_es *es, | |
892 | struct bgpevpn *vpn, struct attr *attr) | |
893 | { | |
894 | struct ecommunity ecom_encap; | |
895 | struct ecommunity_val eval; | |
896 | bgp_encap_types tnl_type; | |
897 | struct listnode *rt_node; | |
898 | struct ecommunity *ecom; | |
899 | ||
900 | /* Encap */ | |
901 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
902 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
903 | encode_encap_extcomm(tnl_type, &eval); | |
904 | ecom_encap.size = 1; | |
7659ad68 | 905 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
c44ab6f1 | 906 | ecom_encap.val = (uint8_t *)eval.val; |
b53e67a3 | 907 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
c44ab6f1 AK |
908 | |
909 | /* Add export RTs for the L2-VNI */ | |
910 | for (ALL_LIST_ELEMENTS_RO(vpn->export_rtl, rt_node, ecom)) | |
b53e67a3 DA |
911 | bgp_attr_set_ecommunity( |
912 | attr, | |
913 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
c44ab6f1 AK |
914 | } |
915 | ||
916 | /* Update EVPN EAD (type-1) route - | |
917 | * vpn - valid for EAD-EVI routes and NULL for EAD-ES routes | |
918 | */ | |
7b0db0e4 AK |
919 | static int bgp_evpn_type1_route_update(struct bgp *bgp, struct bgp_evpn_es *es, |
920 | struct bgpevpn *vpn, | |
921 | struct bgp_evpn_es_frag *es_frag, | |
922 | struct prefix_evpn *p) | |
c44ab6f1 AK |
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 | ||
6006b807 | 934 | memset(&attr, 0, sizeof(attr)); |
c44ab6f1 AK |
935 | |
936 | /* Build path-attribute for this route. */ | |
0f05ea43 | 937 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
c44ab6f1 AK |
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. */ | |
852d9f97 | 951 | dest = bgp_node_get(vpn->ip_table, (struct prefix *)p); |
c44ab6f1 AK |
952 | |
953 | /* Create or update route entry. */ | |
09319b4e | 954 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
e0a79881 | 955 | &attr, &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 */ | |
7b0db0e4 | 968 | bgp_evpn_type1_es_route_extcomm_build(es_frag, &attr); |
c44ab6f1 AK |
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 | 976 | ret = bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
e0a79881 | 977 | &attr, &pi, &route_changed); |
c44ab6f1 | 978 | if (ret != 0) { |
23d0a753 DA |
979 | flog_err( |
980 | EC_BGP_ES_INVALID, | |
b0b9a2fe | 981 | "%u ERROR: Failed to updated EAD-ES route ESI: %s VTEP %pI4", |
23d0a753 | 982 | bgp->vrf_id, es->esi_str, &es->originator_ip); |
c44ab6f1 | 983 | } |
7b0db0e4 | 984 | global_rd = &es_frag->prd; |
c44ab6f1 AK |
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 | ||
34c7f35f SW |
1006 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
1007 | p, global_rd, NULL); | |
09319b4e | 1008 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, dest, |
e0a79881 | 1009 | attr_new, &global_pi, &route_changed); |
c44ab6f1 AK |
1010 | |
1011 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
1012 | bgp_process(bgp, dest, afi, safi); |
1013 | bgp_dest_unlock_node(dest); | |
c44ab6f1 AK |
1014 | } |
1015 | ||
1016 | /* Unintern temporary. */ | |
1017 | aspath_unintern(&attr.aspath); | |
1018 | return 0; | |
1019 | } | |
1020 | ||
9c49ac74 AD |
1021 | /* |
1022 | * This function is called when the export RT for a VNI changes. | |
1023 | * Update all type-1 local routes for this VNI from VNI/ES tables and the global | |
1024 | * table and advertise these routes to peers. | |
1025 | */ | |
1026 | ||
7b0db0e4 AK |
1027 | static void bgp_evpn_ead_es_route_update(struct bgp *bgp, |
1028 | struct bgp_evpn_es *es) | |
1029 | { | |
1030 | struct listnode *node; | |
1031 | struct bgp_evpn_es_frag *es_frag; | |
1032 | struct prefix_evpn p; | |
1033 | ||
1034 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1035 | es->originator_ip); | |
1036 | for (ALL_LIST_ELEMENTS_RO(es->es_frag_list, node, es_frag)) { | |
1037 | if (!listcount(es_frag->es_evi_frag_list)) | |
1038 | continue; | |
1039 | ||
1040 | p.prefix.ead_addr.frag_id = es_frag->rd_id; | |
1041 | if (bgp_evpn_type1_route_update(bgp, es, NULL, es_frag, &p)) | |
1042 | flog_err( | |
1043 | EC_BGP_EVPN_ROUTE_CREATE, | |
1044 | "EAD-ES route creation failure for ESI %s frag %u", | |
1045 | es->esi_str, es_frag->rd_id); | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | static void bgp_evpn_ead_evi_route_update(struct bgp *bgp, | |
1050 | struct bgp_evpn_es *es, | |
1051 | struct bgpevpn *vpn, | |
1052 | struct prefix_evpn *p) | |
1053 | { | |
1054 | if (bgp_evpn_type1_route_update(bgp, es, vpn, NULL, p)) | |
1055 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
1056 | "EAD-EVI route creation failure for ESI %s VNI %u", | |
1057 | es->esi_str, vpn->vni); | |
1058 | } | |
1059 | ||
9c49ac74 AD |
1060 | void update_type1_routes_for_evi(struct bgp *bgp, struct bgpevpn *vpn) |
1061 | { | |
1062 | struct prefix_evpn p; | |
1063 | struct bgp_evpn_es *es; | |
1064 | struct bgp_evpn_es_evi *es_evi; | |
9c49ac74 | 1065 | |
7b0db0e4 AK |
1066 | |
1067 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
9c49ac74 AD |
1068 | es = es_evi->es; |
1069 | ||
7b0db0e4 AK |
1070 | if (es_evi->vpn != vpn) |
1071 | continue; | |
1072 | ||
9c49ac74 | 1073 | /* Update EAD-ES */ |
7b0db0e4 | 1074 | bgp_evpn_ead_es_route_update(bgp, es); |
9c49ac74 AD |
1075 | |
1076 | /* Update EAD-EVI */ | |
1077 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
1078 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1079 | &es->esi, es->originator_ip); | |
7b0db0e4 | 1080 | bgp_evpn_ead_evi_route_update(bgp, es, vpn, &p); |
9c49ac74 AD |
1081 | } |
1082 | } | |
1083 | } | |
1084 | ||
c44ab6f1 | 1085 | /* Delete local Type-1 route */ |
7b0db0e4 AK |
1086 | static void bgp_evpn_ead_es_route_delete(struct bgp *bgp, |
1087 | struct bgp_evpn_es *es) | |
c44ab6f1 | 1088 | { |
7b0db0e4 AK |
1089 | struct listnode *node; |
1090 | struct bgp_evpn_es_frag *es_frag; | |
1091 | struct prefix_evpn p; | |
1092 | ||
1093 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1094 | es->originator_ip); | |
1095 | for (ALL_LIST_ELEMENTS_RO(es->es_frag_list, node, es_frag)) { | |
1096 | p.prefix.ead_addr.frag_id = es_frag->rd_id; | |
1097 | bgp_evpn_mh_route_delete(bgp, es, NULL, es_frag, &p); | |
1098 | } | |
c44ab6f1 AK |
1099 | } |
1100 | ||
7b0db0e4 AK |
1101 | static int bgp_evpn_ead_evi_route_delete(struct bgp *bgp, |
1102 | struct bgp_evpn_es *es, | |
1103 | struct bgpevpn *vpn, | |
1104 | struct prefix_evpn *p) | |
c44ab6f1 | 1105 | { |
7b0db0e4 | 1106 | return bgp_evpn_mh_route_delete(bgp, es, vpn, NULL, p); |
c44ab6f1 AK |
1107 | } |
1108 | ||
1109 | /* Generate EAD-EVI for all VNIs */ | |
1110 | static void bgp_evpn_local_type1_evi_route_add(struct bgp *bgp, | |
1111 | struct bgp_evpn_es *es) | |
1112 | { | |
1113 | struct listnode *evi_node; | |
1114 | struct prefix_evpn p; | |
1115 | struct bgp_evpn_es_evi *es_evi; | |
1116 | ||
fe8293c3 AK |
1117 | /* EAD-per-EVI routes have been suppressed */ |
1118 | if (!bgp_mh_info->ead_evi_tx) | |
1119 | return; | |
1120 | ||
c44ab6f1 AK |
1121 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) |
1122 | /* EAD-EVI route add for this ES is already done */ | |
1123 | return; | |
1124 | ||
1125 | SET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1126 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1127 | &es->esi, es->originator_ip); | |
1128 | ||
1129 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1130 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1131 | continue; | |
7b0db0e4 | 1132 | bgp_evpn_ead_evi_route_update(bgp, es, es_evi->vpn, &p); |
c44ab6f1 AK |
1133 | } |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * Withdraw EAD-EVI for all VNIs | |
1138 | */ | |
1139 | static void bgp_evpn_local_type1_evi_route_del(struct bgp *bgp, | |
1140 | struct bgp_evpn_es *es) | |
1141 | { | |
1142 | struct listnode *evi_node; | |
1143 | struct prefix_evpn p; | |
1144 | struct bgp_evpn_es_evi *es_evi; | |
1145 | ||
1146 | /* Delete and withdraw locally learnt EAD-EVI route */ | |
1147 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) | |
1148 | /* EAD-EVI route has not been advertised for this ES */ | |
1149 | return; | |
1150 | ||
1151 | UNSET_FLAG(es->flags, BGP_EVPNES_ADV_EVI); | |
1152 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
1153 | &es->esi, es->originator_ip); | |
1154 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, evi_node, es_evi)) { | |
1155 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
1156 | continue; | |
7b0db0e4 | 1157 | if (bgp_evpn_mh_route_delete(bgp, es, es_evi->vpn, NULL, &p)) |
c44ab6f1 AK |
1158 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1159 | "%u: Type4 route creation failure for ESI %s", | |
1160 | bgp->vrf_id, es->esi_str); | |
1161 | } | |
1162 | } | |
185fb14a AK |
1163 | |
1164 | /* | |
c44ab6f1 | 1165 | * Process received EVPN type-1 route (advertise or withdraw). |
185fb14a | 1166 | */ |
c44ab6f1 AK |
1167 | int bgp_evpn_type1_route_process(struct peer *peer, afi_t afi, safi_t safi, |
1168 | struct attr *attr, uint8_t *pfx, int psize, | |
1169 | uint32_t addpath_id) | |
185fb14a | 1170 | { |
c44ab6f1 | 1171 | struct prefix_rd prd; |
185fb14a | 1172 | esi_t esi; |
c44ab6f1 AK |
1173 | uint32_t eth_tag; |
1174 | mpls_label_t label; | |
185fb14a | 1175 | struct in_addr vtep_ip; |
185fb14a AK |
1176 | struct prefix_evpn p; |
1177 | ||
c44ab6f1 | 1178 | if (psize != BGP_EVPN_TYPE1_PSIZE) { |
185fb14a | 1179 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
c44ab6f1 AK |
1180 | "%u:%s - Rx EVPN Type-1 NLRI with invalid length %d", |
1181 | peer->bgp->vrf_id, peer->host, psize); | |
185fb14a AK |
1182 | return -1; |
1183 | } | |
1184 | ||
1185 | /* Make prefix_rd */ | |
1186 | prd.family = AF_UNSPEC; | |
1187 | prd.prefixlen = 64; | |
c44ab6f1 AK |
1188 | memcpy(&prd.val, pfx, RD_BYTES); |
1189 | pfx += RD_BYTES; | |
185fb14a AK |
1190 | |
1191 | /* get the ESI */ | |
1192 | memcpy(&esi, pfx, ESI_BYTES); | |
1193 | pfx += ESI_BYTES; | |
1194 | ||
c44ab6f1 AK |
1195 | /* Copy Ethernet Tag */ |
1196 | memcpy(ð_tag, pfx, EVPN_ETH_TAG_BYTES); | |
1197 | eth_tag = ntohl(eth_tag); | |
1198 | pfx += EVPN_ETH_TAG_BYTES; | |
185fb14a | 1199 | |
c44ab6f1 | 1200 | memcpy(&label, pfx, BGP_LABEL_BYTES); |
185fb14a | 1201 | |
c44ab6f1 AK |
1202 | /* EAD route prefix doesn't include the nexthop in the global |
1203 | * table | |
1204 | */ | |
3a6290bd | 1205 | vtep_ip.s_addr = INADDR_ANY; |
c44ab6f1 | 1206 | build_evpn_type1_prefix(&p, eth_tag, &esi, vtep_ip); |
185fb14a AK |
1207 | /* Process the route. */ |
1208 | if (attr) { | |
367b458c DS |
1209 | bgp_update(peer, (struct prefix *)&p, addpath_id, attr, afi, |
1210 | safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, | |
1211 | 0, 0, NULL); | |
185fb14a | 1212 | } else { |
bf0c6163 DA |
1213 | bgp_withdraw(peer, (struct prefix *)&p, addpath_id, afi, safi, |
1214 | ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, NULL, 0, | |
1215 | NULL); | |
185fb14a | 1216 | } |
367b458c | 1217 | return 0; |
185fb14a AK |
1218 | } |
1219 | ||
f4a5218d AK |
1220 | void bgp_evpn_mh_config_ead_export_rt(struct bgp *bgp, |
1221 | struct ecommunity *ecomcfg, bool del) | |
1222 | { | |
1223 | struct listnode *node, *nnode, *node_to_del; | |
1224 | struct ecommunity *ecom; | |
f4a5218d AK |
1225 | struct bgp_evpn_es *es; |
1226 | ||
1227 | if (del) { | |
1228 | if (ecomcfg == NULL) { | |
1229 | /* Reset to default and process all routes. */ | |
1230 | for (ALL_LIST_ELEMENTS(bgp_mh_info->ead_es_export_rtl, | |
1231 | node, nnode, ecom)) { | |
1232 | ecommunity_free(&ecom); | |
1233 | list_delete_node(bgp_mh_info->ead_es_export_rtl, | |
1234 | node); | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | /* Delete a specific export RT */ | |
1239 | else { | |
1240 | node_to_del = NULL; | |
1241 | ||
1242 | for (ALL_LIST_ELEMENTS(bgp_mh_info->ead_es_export_rtl, | |
1243 | node, nnode, ecom)) { | |
1244 | if (ecommunity_match(ecom, ecomcfg)) { | |
1245 | ecommunity_free(&ecom); | |
1246 | node_to_del = node; | |
1247 | break; | |
1248 | } | |
1249 | } | |
1250 | ||
e2d3f916 | 1251 | assert(node_to_del); |
1252 | list_delete_node(bgp_mh_info->ead_es_export_rtl, | |
1253 | node_to_del); | |
f4a5218d AK |
1254 | } |
1255 | } else { | |
1256 | listnode_add_sort(bgp_mh_info->ead_es_export_rtl, ecomcfg); | |
1257 | } | |
1258 | ||
1259 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
1260 | zlog_debug("local ES del/re-add EAD route on export RT change"); | |
1261 | /* | |
1262 | * walk through all active ESs withdraw the old EAD and | |
1263 | * generate a new one | |
1264 | */ | |
1265 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
1266 | if (!bgp_evpn_is_es_local(es) || | |
1267 | !bgp_evpn_local_es_is_active(es)) | |
1268 | continue; | |
1269 | ||
f4a5218d AK |
1270 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
1271 | zlog_debug( | |
1272 | "local ES %s del/re-add EAD route on export RT change", | |
1273 | es->esi_str); | |
1274 | ||
1275 | /* | |
1276 | * withdraw EAD-ES. XXX - this should technically not be | |
1277 | * needed; can be removed after testing | |
1278 | */ | |
7b0db0e4 | 1279 | bgp_evpn_ead_es_route_delete(bgp, es); |
f4a5218d AK |
1280 | |
1281 | /* generate EAD-ES */ | |
7b0db0e4 | 1282 | bgp_evpn_ead_es_route_update(bgp, es); |
f4a5218d AK |
1283 | } |
1284 | } | |
1285 | ||
c44ab6f1 AK |
1286 | /*****************************************************************************/ |
1287 | /* Ethernet Segment Management | |
1288 | * 1. Ethernet Segment is a collection of links attached to the same | |
1289 | * server (MHD) or switch (MHN) | |
1290 | * 2. An Ethernet Segment can span multiple PEs and is identified by the | |
1291 | * 10-byte ES-ID. | |
1292 | * 3. Local ESs are configured in zebra and sent to BGP | |
1293 | * 4. Remote ESs are created by BGP when one or more ES-EVIs reference it i.e. | |
1294 | * created on first reference and release on last de-reference | |
1295 | * 5. An ES can be both local and remote. Infact most local ESs are expected | |
1296 | * to have an ES peer. | |
1297 | */ | |
1298 | ||
1299 | /* A list of remote VTEPs is maintained for each ES. This list includes - | |
1300 | * 1. VTEPs for which we have imported the ESR i.e. ES-peers | |
1301 | * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI | |
1302 | * have been imported into one or more VNIs | |
185fb14a | 1303 | */ |
c44ab6f1 AK |
1304 | static int bgp_evpn_es_vtep_cmp(void *p1, void *p2) |
1305 | { | |
1306 | const struct bgp_evpn_es_vtep *es_vtep1 = p1; | |
1307 | const struct bgp_evpn_es_vtep *es_vtep2 = p2; | |
1308 | ||
1309 | return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; | |
1310 | } | |
1311 | ||
1312 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_new(struct bgp_evpn_es *es, | |
1313 | struct in_addr vtep_ip) | |
1314 | { | |
1315 | struct bgp_evpn_es_vtep *es_vtep; | |
1316 | ||
1317 | es_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_VTEP, sizeof(*es_vtep)); | |
1318 | ||
1319 | es_vtep->es = es; | |
1320 | es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
23aa35ad AK |
1321 | inet_ntop(AF_INET, &es_vtep->vtep_ip, es_vtep->vtep_str, |
1322 | sizeof(es_vtep->vtep_str)); | |
c44ab6f1 AK |
1323 | listnode_init(&es_vtep->es_listnode, es_vtep); |
1324 | listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); | |
1325 | ||
1326 | return es_vtep; | |
1327 | } | |
1328 | ||
1329 | static void bgp_evpn_es_vtep_free(struct bgp_evpn_es_vtep *es_vtep) | |
1330 | { | |
1331 | struct bgp_evpn_es *es = es_vtep->es; | |
1332 | ||
1333 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR) || | |
1334 | es_vtep->evi_cnt) | |
1335 | /* as long as there is some reference we can't free it */ | |
1336 | return; | |
1337 | ||
1338 | list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); | |
1339 | XFREE(MTYPE_BGP_EVPN_ES_VTEP, es_vtep); | |
1340 | } | |
1341 | ||
1342 | /* check if VTEP is already part of the list */ | |
1343 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_find(struct bgp_evpn_es *es, | |
1344 | struct in_addr vtep_ip) | |
1345 | { | |
1346 | struct listnode *node = NULL; | |
1347 | struct bgp_evpn_es_vtep *es_vtep; | |
1348 | ||
1349 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
1350 | if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
1351 | return es_vtep; | |
1352 | } | |
1353 | return NULL; | |
1354 | } | |
1355 | ||
1356 | /* Send the remote ES to zebra for NHG programming */ | |
1357 | static int bgp_zebra_send_remote_es_vtep(struct bgp *bgp, | |
1358 | struct bgp_evpn_es_vtep *es_vtep, bool add) | |
1359 | { | |
1360 | struct bgp_evpn_es *es = es_vtep->es; | |
1361 | struct stream *s; | |
74e2bd89 | 1362 | uint32_t flags = 0; |
c44ab6f1 AK |
1363 | |
1364 | /* Check socket. */ | |
1365 | if (!zclient || zclient->sock < 0) | |
1366 | return 0; | |
1367 | ||
1368 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
1369 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { | |
1370 | if (BGP_DEBUG(zebra, ZEBRA)) | |
1371 | zlog_debug("No zebra instance, not installing remote es %s", | |
1372 | es->esi_str); | |
1373 | return 0; | |
1374 | } | |
1375 | ||
74e2bd89 AK |
1376 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
1377 | flags |= ZAPI_ES_VTEP_FLAG_ESR_RXED; | |
1378 | ||
c44ab6f1 AK |
1379 | s = zclient->obuf; |
1380 | stream_reset(s); | |
1381 | ||
1382 | zclient_create_header(s, | |
1383 | add ? ZEBRA_REMOTE_ES_VTEP_ADD : ZEBRA_REMOTE_ES_VTEP_DEL, | |
1384 | bgp->vrf_id); | |
1385 | stream_put(s, &es->esi, sizeof(esi_t)); | |
1386 | stream_put_ipv4(s, es_vtep->vtep_ip.s_addr); | |
74e2bd89 AK |
1387 | if (add) { |
1388 | stream_putl(s, flags); | |
1389 | stream_putc(s, es_vtep->df_alg); | |
1390 | stream_putw(s, es_vtep->df_pref); | |
1391 | } | |
c44ab6f1 AK |
1392 | |
1393 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1394 | ||
1395 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
1396 | zlog_debug("Tx %s Remote ESI %s VTEP %pI4", add ? "ADD" : "DEL", |
1397 | es->esi_str, &es_vtep->vtep_ip); | |
c44ab6f1 | 1398 | |
23aa35ad AK |
1399 | frrtrace(3, frr_bgp, evpn_mh_vtep_zsend, add, es, es_vtep); |
1400 | ||
c44ab6f1 AK |
1401 | return zclient_send_message(zclient); |
1402 | } | |
1403 | ||
1404 | static void bgp_evpn_es_vtep_re_eval_active(struct bgp *bgp, | |
74e2bd89 AK |
1405 | struct bgp_evpn_es_vtep *es_vtep, |
1406 | bool param_change) | |
c44ab6f1 AK |
1407 | { |
1408 | bool old_active; | |
1409 | bool new_active; | |
1410 | ||
d4980edf | 1411 | old_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 AK |
1412 | /* currently we need an active EVI reference to use the VTEP as |
1413 | * a nexthop. this may change... | |
1414 | */ | |
1415 | if (es_vtep->evi_cnt) | |
1416 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1417 | else | |
1418 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); | |
1419 | ||
d4980edf | 1420 | new_active = CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE); |
c44ab6f1 | 1421 | |
74e2bd89 | 1422 | if ((old_active != new_active) || (new_active && param_change)) { |
c44ab6f1 | 1423 | |
74e2bd89 AK |
1424 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1425 | zlog_debug("es %s vtep %pI4 %s df %u/%u", | |
1426 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1427 | new_active ? "active" : "inactive", | |
1428 | es_vtep->df_alg, es_vtep->df_pref); | |
c44ab6f1 | 1429 | |
74e2bd89 AK |
1430 | /* send remote ES to zebra */ |
1431 | bgp_zebra_send_remote_es_vtep(bgp, es_vtep, new_active); | |
c44ab6f1 | 1432 | |
8bcb09a1 AK |
1433 | /* The NHG is updated first for efficient failover handling. |
1434 | * Note the NHG can be de-activated while there are bgp | |
1435 | * routes referencing it. Zebra is capable of handling that | |
1436 | * elegantly by holding the NHG till all routes using it are | |
1437 | * removed. | |
26c03e43 | 1438 | */ |
8bcb09a1 | 1439 | bgp_evpn_l3nhg_update_on_vtep_chg(es_vtep->es); |
74e2bd89 AK |
1440 | /* queue up the es for background consistency checks */ |
1441 | bgp_evpn_es_cons_checks_pend_add(es_vtep->es); | |
1442 | } | |
c44ab6f1 AK |
1443 | } |
1444 | ||
1445 | static struct bgp_evpn_es_vtep *bgp_evpn_es_vtep_add(struct bgp *bgp, | |
74e2bd89 AK |
1446 | struct bgp_evpn_es *es, |
1447 | struct in_addr vtep_ip, | |
1448 | bool esr, uint8_t df_alg, | |
1449 | uint16_t df_pref) | |
c44ab6f1 AK |
1450 | { |
1451 | struct bgp_evpn_es_vtep *es_vtep; | |
74e2bd89 | 1452 | bool param_change = false; |
c44ab6f1 AK |
1453 | |
1454 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1455 | ||
1456 | if (!es_vtep) | |
1457 | es_vtep = bgp_evpn_es_vtep_new(es, vtep_ip); | |
1458 | ||
1459 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74e2bd89 AK |
1460 | zlog_debug("es %s vtep %pI4 add %s df %u/%u", |
1461 | es_vtep->es->esi_str, &es_vtep->vtep_ip, | |
1462 | esr ? "esr" : "ead", df_alg, df_pref); | |
c44ab6f1 | 1463 | |
74e2bd89 | 1464 | if (esr) { |
c44ab6f1 | 1465 | SET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); |
74e2bd89 AK |
1466 | if ((es_vtep->df_pref != df_pref) |
1467 | || (es_vtep->df_alg != df_alg)) { | |
1468 | param_change = true; | |
1469 | es_vtep->df_pref = df_pref; | |
1470 | es_vtep->df_alg = df_alg; | |
1471 | } | |
1472 | } else { | |
c44ab6f1 | 1473 | ++es_vtep->evi_cnt; |
74e2bd89 | 1474 | } |
c44ab6f1 | 1475 | |
74e2bd89 | 1476 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1477 | |
1478 | return es_vtep; | |
1479 | } | |
1480 | ||
1481 | static void bgp_evpn_es_vtep_do_del(struct bgp *bgp, | |
1482 | struct bgp_evpn_es_vtep *es_vtep, bool esr) | |
1483 | { | |
74e2bd89 AK |
1484 | bool param_change = false; |
1485 | ||
c44ab6f1 | 1486 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
23d0a753 DA |
1487 | zlog_debug("es %s vtep %pI4 del %s", es_vtep->es->esi_str, |
1488 | &es_vtep->vtep_ip, esr ? "esr" : "ead"); | |
c44ab6f1 AK |
1489 | if (esr) { |
1490 | UNSET_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ESR); | |
74e2bd89 AK |
1491 | if (es_vtep->df_pref || es_vtep->df_alg) { |
1492 | param_change = true; | |
1493 | es_vtep->df_pref = 0; | |
1494 | es_vtep->df_alg = 0; | |
1495 | } | |
c44ab6f1 AK |
1496 | } else { |
1497 | if (es_vtep->evi_cnt) | |
1498 | --es_vtep->evi_cnt; | |
1499 | } | |
1500 | ||
74e2bd89 | 1501 | bgp_evpn_es_vtep_re_eval_active(bgp, es_vtep, param_change); |
c44ab6f1 AK |
1502 | bgp_evpn_es_vtep_free(es_vtep); |
1503 | } | |
1504 | ||
1505 | static void bgp_evpn_es_vtep_del(struct bgp *bgp, | |
1506 | struct bgp_evpn_es *es, struct in_addr vtep_ip, bool esr) | |
1507 | { | |
1508 | struct bgp_evpn_es_vtep *es_vtep; | |
1509 | ||
1510 | es_vtep = bgp_evpn_es_vtep_find(es, vtep_ip); | |
1511 | if (es_vtep) | |
1512 | bgp_evpn_es_vtep_do_del(bgp, es_vtep, esr); | |
1513 | } | |
1514 | ||
26c03e43 | 1515 | /********************** ES MAC-IP paths ************************************* |
58bff4d1 AK |
1516 | * 1. Local MAC-IP routes in the VNI routing table are linked to the |
1517 | * destination ES (macip_evi_path_list) for efficient updates on ES oper | |
1518 | * state changes. | |
1519 | * 2. Non-local MAC-IP routes in the global routing table are linked to | |
1520 | * the detination for efficient updates on - | |
1521 | * a. VTEP add/del - this results in a L3NHG update. | |
1522 | * b. ES-VRF add/del - this may result in the host route being migrated to | |
1523 | * L3NHG or vice versa (flat multipath list). | |
26c03e43 | 1524 | ****************************************************************************/ |
60605cbc | 1525 | static void bgp_evpn_path_es_info_free(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1526 | { |
1527 | bgp_evpn_path_es_unlink(es_info); | |
1528 | XFREE(MTYPE_BGP_EVPN_PATH_ES_INFO, es_info); | |
1529 | } | |
1530 | ||
60605cbc AK |
1531 | void bgp_evpn_path_mh_info_free(struct bgp_path_mh_info *mh_info) |
1532 | { | |
1533 | if (mh_info->es_info) | |
1534 | bgp_evpn_path_es_info_free(mh_info->es_info); | |
090efa2f AK |
1535 | if (mh_info->nh_info) |
1536 | bgp_evpn_path_nh_info_free(mh_info->nh_info); | |
60605cbc AK |
1537 | XFREE(MTYPE_BGP_EVPN_PATH_MH_INFO, mh_info); |
1538 | } | |
1539 | ||
26c03e43 AK |
1540 | static struct bgp_path_es_info * |
1541 | bgp_evpn_path_es_info_new(struct bgp_path_info *pi, vni_t vni) | |
1542 | { | |
1543 | struct bgp_path_info_extra *e; | |
60605cbc AK |
1544 | struct bgp_path_mh_info *mh_info; |
1545 | struct bgp_path_es_info *es_info; | |
26c03e43 AK |
1546 | |
1547 | e = bgp_path_info_extra_get(pi); | |
1548 | ||
60605cbc AK |
1549 | /* If mh_info doesn't exist allocate it */ |
1550 | mh_info = e->mh_info; | |
1551 | if (!mh_info) | |
1552 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
1553 | sizeof(struct bgp_path_mh_info)); | |
1554 | ||
26c03e43 | 1555 | /* If es_info doesn't exist allocate it */ |
60605cbc AK |
1556 | es_info = mh_info->es_info; |
1557 | if (!es_info) { | |
1558 | mh_info->es_info = es_info = | |
1559 | XCALLOC(MTYPE_BGP_EVPN_PATH_ES_INFO, | |
1560 | sizeof(struct bgp_path_es_info)); | |
1561 | es_info->vni = vni; | |
1562 | es_info->pi = pi; | |
26c03e43 AK |
1563 | } |
1564 | ||
60605cbc | 1565 | return es_info; |
26c03e43 AK |
1566 | } |
1567 | ||
60605cbc | 1568 | static void bgp_evpn_path_es_unlink(struct bgp_path_es_info *es_info) |
26c03e43 AK |
1569 | { |
1570 | struct bgp_evpn_es *es = es_info->es; | |
1571 | struct bgp_path_info *pi; | |
26c03e43 AK |
1572 | |
1573 | if (!es) | |
1574 | return; | |
1575 | ||
1576 | pi = es_info->pi; | |
1577 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1578 | zlog_debug("vni %u path %pFX unlinked from es %s", es_info->vni, |
1579 | &pi->net->p, es->esi_str); | |
26c03e43 | 1580 | |
58bff4d1 AK |
1581 | if (es_info->vni) |
1582 | list_delete_node(es->macip_evi_path_list, | |
1583 | &es_info->es_listnode); | |
1584 | else | |
1585 | list_delete_node(es->macip_global_path_list, | |
1586 | &es_info->es_listnode); | |
74efb822 | 1587 | |
26c03e43 AK |
1588 | es_info->es = NULL; |
1589 | ||
1590 | /* if there are no other references against the ES it | |
1591 | * needs to be freed | |
1592 | */ | |
1593 | bgp_evpn_es_free(es, __func__); | |
1594 | ||
1595 | /* Note we don't free the path es_info on unlink; it will be freed up | |
1596 | * along with the path. | |
1597 | */ | |
1598 | } | |
1599 | ||
1600 | void bgp_evpn_path_es_link(struct bgp_path_info *pi, vni_t vni, esi_t *esi) | |
1601 | { | |
1602 | struct bgp_path_es_info *es_info; | |
1603 | struct bgp_evpn_es *es; | |
58bff4d1 | 1604 | struct bgp *bgp_evpn; |
26c03e43 | 1605 | |
60605cbc AK |
1606 | es_info = (pi->extra && pi->extra->mh_info) |
1607 | ? pi->extra->mh_info->es_info | |
1608 | : NULL; | |
26c03e43 AK |
1609 | /* if the esi is zero just unlink the path from the old es */ |
1610 | if (!esi || !memcmp(esi, zero_esi, sizeof(*esi))) { | |
1611 | if (es_info) | |
1612 | bgp_evpn_path_es_unlink(es_info); | |
1613 | return; | |
1614 | } | |
1615 | ||
58bff4d1 | 1616 | bgp_evpn = bgp_get_evpn(); |
26c03e43 AK |
1617 | if (!bgp_evpn) |
1618 | return; | |
1619 | ||
1620 | /* setup es_info against the path if it doesn't aleady exist */ | |
1621 | if (!es_info) | |
1622 | es_info = bgp_evpn_path_es_info_new(pi, vni); | |
1623 | ||
1624 | /* find-create ES */ | |
1625 | es = bgp_evpn_es_find(esi); | |
1626 | if (!es) | |
f61fbf21 | 1627 | es = bgp_evpn_es_new(bgp_evpn, esi); |
26c03e43 AK |
1628 | |
1629 | /* dup check */ | |
1630 | if (es_info->es == es) | |
1631 | return; | |
1632 | ||
1633 | /* unlink old ES if any */ | |
1634 | bgp_evpn_path_es_unlink(es_info); | |
1635 | ||
1636 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
229587fb AK |
1637 | zlog_debug("vni %u path %pFX linked to es %s", vni, &pi->net->p, |
1638 | es->esi_str); | |
26c03e43 AK |
1639 | |
1640 | /* link mac-ip path to the new destination ES */ | |
1641 | es_info->es = es; | |
1642 | listnode_init(&es_info->es_listnode, es_info); | |
58bff4d1 AK |
1643 | if (es_info->vni) |
1644 | listnode_add(es->macip_evi_path_list, &es_info->es_listnode); | |
1645 | else | |
1646 | listnode_add(es->macip_global_path_list, &es_info->es_listnode); | |
26c03e43 AK |
1647 | } |
1648 | ||
74efb822 AK |
1649 | static bool bgp_evpn_is_macip_path(struct bgp_path_info *pi) |
1650 | { | |
1651 | struct prefix_evpn *evp; | |
1652 | ||
1653 | /* Only MAC-IP routes need to be linked (MAC-only routes can be | |
1654 | * skipped) as these lists are maintained for managing | |
1655 | * host routes in the tenant VRF | |
1656 | */ | |
1657 | evp = (struct prefix_evpn *)&pi->net->p; | |
1658 | return is_evpn_prefix_ipaddr_v4(evp) || is_evpn_prefix_ipaddr_v6(evp); | |
1659 | } | |
1660 | ||
58bff4d1 AK |
1661 | /* When a remote ES is added to a VRF, routes using that as |
1662 | * a destination need to be migrated to a L3NHG or viceversa. | |
1663 | * This is done indirectly by re-attempting an install of the | |
1664 | * route in the associated VRFs. As a part of the VRF install use | |
1665 | * of l3 NHG is evaluated and this results in the | |
b3ba2118 | 1666 | * attr.es_flag ATTR_ES_L3_NHG_USE being set or cleared. |
36dd4574 AK |
1667 | */ |
1668 | static void | |
1669 | bgp_evpn_es_path_update_on_es_vrf_chg(struct bgp_evpn_es_vrf *es_vrf, | |
58bff4d1 | 1670 | const char *reason) |
26c03e43 AK |
1671 | { |
1672 | struct listnode *node; | |
1673 | struct bgp_path_es_info *es_info; | |
1674 | struct bgp_path_info *pi; | |
58bff4d1 | 1675 | struct bgp_evpn_es *es = es_vrf->es; |
26c03e43 | 1676 | |
36dd4574 AK |
1677 | if (!bgp_mh_info->host_routes_use_l3nhg) |
1678 | return; | |
1679 | ||
26c03e43 | 1680 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
58bff4d1 | 1681 | zlog_debug("update paths linked to es %s on es-vrf %s %s", |
dc9ca53f | 1682 | es->esi_str, es_vrf->bgp_vrf->name_pretty, reason); |
26c03e43 | 1683 | |
58bff4d1 | 1684 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { |
26c03e43 | 1685 | pi = es_info->pi; |
26c03e43 | 1686 | |
74efb822 AK |
1687 | if (!bgp_evpn_is_macip_path(pi)) |
1688 | continue; | |
1689 | ||
26c03e43 | 1690 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
2eef4f20 | 1691 | zlog_debug( |
58bff4d1 AK |
1692 | "update path %pFX linked to es %s on vrf chg", |
1693 | &pi->net->p, es->esi_str); | |
1694 | bgp_evpn_route_entry_install_if_vrf_match(es_vrf->bgp_vrf, pi, | |
1695 | 1); | |
26c03e43 AK |
1696 | } |
1697 | } | |
1698 | ||
7b0db0e4 AK |
1699 | static void bgp_evpn_es_frag_free(struct bgp_evpn_es_frag *es_frag) |
1700 | { | |
1701 | struct bgp_evpn_es *es = es_frag->es; | |
1702 | ||
1703 | if (es->es_base_frag == es_frag) | |
1704 | es->es_base_frag = NULL; | |
1705 | ||
1706 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1707 | zlog_debug("es %s frag %u free", es->esi_str, es_frag->rd_id); | |
1708 | list_delete_node(es->es_frag_list, &es_frag->es_listnode); | |
1709 | ||
1710 | /* EVIs that are advertised using the info in this fragment */ | |
1711 | list_delete(&es_frag->es_evi_frag_list); | |
1712 | ||
1713 | bf_release_index(bm->rd_idspace, es_frag->rd_id); | |
1714 | ||
1715 | ||
1716 | XFREE(MTYPE_BGP_EVPN_ES_FRAG, es_frag); | |
1717 | } | |
1718 | ||
1719 | static void bgp_evpn_es_frag_free_unused(struct bgp_evpn_es_frag *es_frag) | |
1720 | { | |
1721 | if ((es_frag->es->es_base_frag == es_frag) || | |
1722 | listcount(es_frag->es_evi_frag_list)) | |
1723 | return; | |
1724 | ||
1725 | bgp_evpn_es_frag_free(es_frag); | |
1726 | } | |
1727 | ||
1728 | static void bgp_evpn_es_frag_free_all(struct bgp_evpn_es *es) | |
1729 | { | |
1730 | struct listnode *node; | |
1731 | struct listnode *nnode; | |
1732 | struct bgp_evpn_es_frag *es_frag; | |
1733 | ||
1734 | for (ALL_LIST_ELEMENTS(es->es_frag_list, node, nnode, es_frag)) | |
1735 | bgp_evpn_es_frag_free(es_frag); | |
1736 | } | |
1737 | ||
1738 | static struct bgp_evpn_es_frag *bgp_evpn_es_frag_new(struct bgp_evpn_es *es) | |
1739 | { | |
1740 | struct bgp_evpn_es_frag *es_frag; | |
1741 | char buf[BGP_EVPN_PREFIX_RD_LEN]; | |
1742 | struct bgp *bgp; | |
1743 | ||
1744 | es_frag = XCALLOC(MTYPE_BGP_EVPN_ES_FRAG, sizeof(*es_frag)); | |
1745 | bf_assign_index(bm->rd_idspace, es_frag->rd_id); | |
1746 | es_frag->prd.family = AF_UNSPEC; | |
1747 | es_frag->prd.prefixlen = 64; | |
1748 | bgp = bgp_get_evpn(); | |
1749 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, | |
1750 | es_frag->rd_id); | |
1751 | (void)str2prefix_rd(buf, &es_frag->prd); | |
1752 | ||
1753 | /* EVIs that are advertised using the info in this fragment */ | |
1754 | es_frag->es_evi_frag_list = list_new(); | |
1755 | listset_app_node_mem(es_frag->es_evi_frag_list); | |
1756 | ||
1757 | /* Link the fragment to the parent ES */ | |
1758 | es_frag->es = es; | |
1759 | listnode_init(&es_frag->es_listnode, es_frag); | |
1760 | listnode_add(es->es_frag_list, &es_frag->es_listnode); | |
1761 | ||
1762 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1763 | zlog_debug("es %s frag %u new", es->esi_str, es_frag->rd_id); | |
1764 | return es_frag; | |
1765 | } | |
1766 | ||
1767 | static struct bgp_evpn_es_frag * | |
1768 | bgp_evpn_es_find_frag_with_space(struct bgp_evpn_es *es) | |
1769 | { | |
1770 | struct listnode *node; | |
1771 | struct bgp_evpn_es_frag *es_frag; | |
1772 | ||
1773 | for (ALL_LIST_ELEMENTS_RO(es->es_frag_list, node, es_frag)) { | |
bb37eabe AK |
1774 | if (listcount(es_frag->es_evi_frag_list) < |
1775 | bgp_mh_info->evi_per_es_frag) | |
7b0db0e4 AK |
1776 | return es_frag; |
1777 | } | |
1778 | ||
1779 | /* No frags where found with space; allocate a new one */ | |
1780 | return bgp_evpn_es_frag_new(es); | |
1781 | } | |
1782 | ||
1783 | /* Link the ES-EVI to one of the ES fragments */ | |
1784 | static void bgp_evpn_es_frag_evi_add(struct bgp_evpn_es_evi *es_evi) | |
1785 | { | |
1786 | struct bgp_evpn_es_frag *es_frag; | |
1787 | struct bgp_evpn_es *es = es_evi->es; | |
1788 | ||
1789 | if (es_evi->es_frag || | |
1790 | !(CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL))) | |
1791 | return; | |
1792 | ||
1793 | es_frag = bgp_evpn_es_find_frag_with_space(es); | |
1794 | ||
1795 | es_evi->es_frag = es_frag; | |
1796 | listnode_init(&es_evi->es_frag_listnode, es_evi); | |
1797 | listnode_add(es_frag->es_evi_frag_list, &es_evi->es_frag_listnode); | |
1798 | ||
1799 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1800 | zlog_debug("es %s vni %d linked to frag %u", es->esi_str, | |
1801 | es_evi->vpn->vni, es_frag->rd_id); | |
1802 | } | |
1803 | ||
1804 | /* UnLink the ES-EVI from the ES fragment */ | |
1805 | static void bgp_evpn_es_frag_evi_del(struct bgp_evpn_es_evi *es_evi, | |
1806 | bool send_ead_del_if_empty) | |
1807 | { | |
1808 | struct bgp_evpn_es_frag *es_frag = es_evi->es_frag; | |
1809 | struct prefix_evpn p; | |
1810 | struct bgp_evpn_es *es; | |
1811 | struct bgp *bgp; | |
1812 | ||
1813 | if (!es_frag) | |
1814 | return; | |
1815 | ||
1816 | es = es_frag->es; | |
1817 | es_evi->es_frag = NULL; | |
1818 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1819 | zlog_debug("es %s vni %d unlinked from frag %u", es->esi_str, | |
1820 | es_evi->vpn->vni, es_frag->rd_id); | |
1821 | ||
1822 | list_delete_node(es_frag->es_evi_frag_list, &es_evi->es_frag_listnode); | |
1823 | ||
1824 | /* | |
1825 | * if there are no other EVIs on the fragment deleted the EAD-ES for | |
1826 | * the fragment | |
1827 | */ | |
1828 | if (send_ead_del_if_empty && !listcount(es_frag->es_evi_frag_list)) { | |
1829 | bgp = bgp_get_evpn(); | |
1830 | ||
1831 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
1832 | zlog_debug("es %s frag %u ead-es route delete", | |
1833 | es->esi_str, es_frag->rd_id); | |
1834 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_ES_ETH_TAG, &es->esi, | |
1835 | es->originator_ip); | |
1836 | p.prefix.ead_addr.frag_id = es_frag->rd_id; | |
1837 | bgp_evpn_mh_route_delete(bgp, es, NULL, es_frag, &p); | |
1838 | } | |
1839 | ||
1840 | /* We don't attempt to coalesce frags that may not be full. Instead we | |
1841 | * only free up the frag when it is completely empty. | |
1842 | */ | |
1843 | bgp_evpn_es_frag_free_unused(es_frag); | |
1844 | } | |
1845 | ||
1846 | /* Link the ES-EVIs to one of the ES fragments */ | |
1847 | static void bgp_evpn_es_frag_evi_update_all(struct bgp_evpn_es *es, bool add) | |
1848 | { | |
1849 | struct listnode *node; | |
1850 | struct bgp_evpn_es_evi *es_evi; | |
1851 | ||
1852 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, node, es_evi)) { | |
1853 | if (add) | |
1854 | bgp_evpn_es_frag_evi_add(es_evi); | |
1855 | else | |
1856 | bgp_evpn_es_frag_evi_del(es_evi, false); | |
1857 | } | |
1858 | } | |
1859 | ||
c44ab6f1 AK |
1860 | /* compare ES-IDs for the global ES RB tree */ |
1861 | static int bgp_es_rb_cmp(const struct bgp_evpn_es *es1, | |
1862 | const struct bgp_evpn_es *es2) | |
1863 | { | |
1864 | return memcmp(&es1->esi, &es2->esi, ESI_BYTES); | |
1865 | } | |
1866 | RB_GENERATE(bgp_es_rb_head, bgp_evpn_es, rb_node, bgp_es_rb_cmp); | |
1867 | ||
1868 | struct bgp_evpn_es *bgp_evpn_es_find(const esi_t *esi) | |
185fb14a | 1869 | { |
c44ab6f1 | 1870 | struct bgp_evpn_es tmp; |
185fb14a | 1871 | |
185fb14a | 1872 | memcpy(&tmp.esi, esi, sizeof(esi_t)); |
c44ab6f1 | 1873 | return RB_FIND(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, &tmp); |
185fb14a AK |
1874 | } |
1875 | ||
c44ab6f1 | 1876 | static struct bgp_evpn_es *bgp_evpn_es_new(struct bgp *bgp, const esi_t *esi) |
185fb14a | 1877 | { |
c44ab6f1 | 1878 | struct bgp_evpn_es *es; |
185fb14a | 1879 | |
c44ab6f1 | 1880 | es = XCALLOC(MTYPE_BGP_EVPN_ES, sizeof(struct bgp_evpn_es)); |
185fb14a | 1881 | |
c44ab6f1 | 1882 | /* set the ESI */ |
185fb14a | 1883 | memcpy(&es->esi, esi, sizeof(esi_t)); |
185fb14a AK |
1884 | |
1885 | /* Initialise the VTEP list */ | |
c44ab6f1 AK |
1886 | es->es_vtep_list = list_new(); |
1887 | listset_app_node_mem(es->es_vtep_list); | |
1888 | es->es_vtep_list->cmp = bgp_evpn_es_vtep_cmp; | |
185fb14a | 1889 | |
c44ab6f1 | 1890 | esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); |
185fb14a | 1891 | |
c44ab6f1 | 1892 | /* Initialize the ES routing table */ |
185fb14a AK |
1893 | es->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
1894 | ||
c44ab6f1 | 1895 | /* Add to rb_tree */ |
92809558 | 1896 | RB_INSERT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); |
185fb14a | 1897 | |
c44ab6f1 AK |
1898 | /* Initialise the ES-EVI list */ |
1899 | es->es_evi_list = list_new(); | |
1900 | listset_app_node_mem(es->es_evi_list); | |
1901 | ||
c589d847 AK |
1902 | /* Initialise the ES-VRF list used for L3NHG management */ |
1903 | es->es_vrf_list = list_new(); | |
1904 | listset_app_node_mem(es->es_vrf_list); | |
1905 | ||
26c03e43 | 1906 | /* Initialise the route list used for efficient event handling */ |
d656e0ae AK |
1907 | es->macip_evi_path_list = list_new(); |
1908 | listset_app_node_mem(es->macip_evi_path_list); | |
58bff4d1 AK |
1909 | es->macip_global_path_list = list_new(); |
1910 | listset_app_node_mem(es->macip_global_path_list); | |
7b0db0e4 AK |
1911 | es->es_frag_list = list_new(); |
1912 | listset_app_node_mem(es->es_frag_list); | |
26c03e43 | 1913 | |
c44ab6f1 AK |
1914 | QOBJ_REG(es, bgp_evpn_es); |
1915 | ||
185fb14a AK |
1916 | return es; |
1917 | } | |
1918 | ||
c44ab6f1 | 1919 | /* Free a given ES - |
185fb14a AK |
1920 | * This just frees appropriate memory, caller should have taken other |
1921 | * needed actions. | |
1922 | */ | |
45a859f1 | 1923 | static void bgp_evpn_es_free(struct bgp_evpn_es *es, const char *caller) |
185fb14a | 1924 | { |
26c03e43 | 1925 | if ((es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) |
58bff4d1 AK |
1926 | || listcount(es->macip_evi_path_list) |
1927 | || listcount(es->macip_global_path_list)) | |
c44ab6f1 AK |
1928 | return; |
1929 | ||
45a859f1 AK |
1930 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
1931 | zlog_debug("%s: es %s free", caller, es->esi_str); | |
1932 | ||
c44ab6f1 AK |
1933 | /* cleanup resources maintained against the ES */ |
1934 | list_delete(&es->es_evi_list); | |
c589d847 | 1935 | list_delete(&es->es_vrf_list); |
c44ab6f1 | 1936 | list_delete(&es->es_vtep_list); |
d656e0ae | 1937 | list_delete(&es->macip_evi_path_list); |
58bff4d1 | 1938 | list_delete(&es->macip_global_path_list); |
7b0db0e4 | 1939 | list_delete(&es->es_frag_list); |
185fb14a | 1940 | bgp_table_unlock(es->route_table); |
c44ab6f1 AK |
1941 | |
1942 | /* remove the entry from various databases */ | |
1943 | RB_REMOVE(bgp_es_rb_head, &bgp_mh_info->es_rb_tree, es); | |
1944 | bgp_evpn_es_cons_checks_pend_del(es); | |
1945 | ||
185fb14a AK |
1946 | QOBJ_UNREG(es); |
1947 | XFREE(MTYPE_BGP_EVPN_ES, es); | |
1948 | } | |
1949 | ||
74efb822 AK |
1950 | static inline bool bgp_evpn_is_es_local_and_non_bypass(struct bgp_evpn_es *es) |
1951 | { | |
1952 | return (es->flags & BGP_EVPNES_LOCAL) | |
1953 | && !(es->flags & BGP_EVPNES_BYPASS); | |
1954 | } | |
1955 | ||
c44ab6f1 AK |
1956 | /* init local info associated with the ES */ |
1957 | static void bgp_evpn_es_local_info_set(struct bgp *bgp, struct bgp_evpn_es *es) | |
185fb14a | 1958 | { |
74efb822 AK |
1959 | bool old_is_local; |
1960 | bool is_local; | |
185fb14a | 1961 | |
c44ab6f1 AK |
1962 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1963 | return; | |
185fb14a | 1964 | |
74efb822 | 1965 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1966 | SET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
74efb822 | 1967 | |
c44ab6f1 AK |
1968 | listnode_init(&es->es_listnode, es); |
1969 | listnode_add(bgp_mh_info->local_es_list, &es->es_listnode); | |
185fb14a | 1970 | |
7b0db0e4 AK |
1971 | /* setup the first ES fragment; more fragments may be allocated based |
1972 | * on the the number of EVI entries | |
1973 | */ | |
1974 | es->es_base_frag = bgp_evpn_es_frag_new(es); | |
1975 | /* distribute ES-EVIs to one or more ES fragments */ | |
1976 | bgp_evpn_es_frag_evi_update_all(es, true); | |
74efb822 AK |
1977 | |
1978 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
1979 | if (old_is_local != is_local) | |
1980 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
c44ab6f1 AK |
1981 | } |
1982 | ||
1983 | /* clear any local info associated with the ES */ | |
d57e0c05 | 1984 | static void bgp_evpn_es_local_info_clear(struct bgp_evpn_es *es, bool finish) |
c44ab6f1 | 1985 | { |
74efb822 AK |
1986 | bool old_is_local; |
1987 | bool is_local; | |
1988 | ||
c44ab6f1 AK |
1989 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) |
1990 | return; | |
185fb14a | 1991 | |
7b0db0e4 AK |
1992 | /* clear the es frag references and free them up */ |
1993 | bgp_evpn_es_frag_evi_update_all(es, false); | |
1994 | es->es_base_frag = NULL; | |
1995 | bgp_evpn_es_frag_free_all(es); | |
1996 | ||
74efb822 | 1997 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
c44ab6f1 | 1998 | UNSET_FLAG(es->flags, BGP_EVPNES_LOCAL); |
185fb14a | 1999 | |
74efb822 | 2000 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
d57e0c05 | 2001 | if (!finish && (old_is_local != is_local)) |
74efb822 AK |
2002 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); |
2003 | ||
c44ab6f1 AK |
2004 | /* remove from the ES local list */ |
2005 | list_delete_node(bgp_mh_info->local_es_list, &es->es_listnode); | |
2006 | ||
45a859f1 | 2007 | bgp_evpn_es_free(es, __func__); |
185fb14a AK |
2008 | } |
2009 | ||
c44ab6f1 AK |
2010 | /* eval remote info associated with the ES */ |
2011 | static void bgp_evpn_es_remote_info_re_eval(struct bgp_evpn_es *es) | |
2012 | { | |
2013 | if (es->remote_es_evi_cnt) { | |
2014 | SET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
2015 | } else { | |
2016 | if (CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) { | |
2017 | UNSET_FLAG(es->flags, BGP_EVPNES_REMOTE); | |
45a859f1 | 2018 | bgp_evpn_es_free(es, __func__); |
c44ab6f1 AK |
2019 | } |
2020 | } | |
2021 | } | |
2022 | ||
70524092 AK |
2023 | /* If ES is present and local it needs to be active/oper-up for |
2024 | * including L3 EC | |
2025 | */ | |
2026 | bool bgp_evpn_es_add_l3_ecomm_ok(esi_t *esi) | |
74be8313 | 2027 | { |
70524092 AK |
2028 | struct bgp_evpn_es *es; |
2029 | ||
2030 | if (!esi || !bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
2031 | return true; | |
2032 | ||
2033 | es = bgp_evpn_es_find(esi); | |
2034 | ||
2035 | return (!es || !(es->flags & BGP_EVPNES_LOCAL) | |
2036 | || bgp_evpn_local_es_is_active(es)); | |
2037 | } | |
2038 | ||
74efb822 AK |
2039 | static bool bgp_evpn_is_valid_local_path(struct bgp_path_info *pi) |
2040 | { | |
2041 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
2042 | && pi->type == ZEBRA_ROUTE_BGP | |
2043 | && pi->sub_type == BGP_ROUTE_STATIC); | |
2044 | } | |
2045 | ||
d656e0ae AK |
2046 | /* Update all local MAC-IP routes in the VNI routing table associated |
2047 | * with the ES. When the ES is down the routes are advertised without | |
2048 | * the L3 extcomm | |
70524092 AK |
2049 | */ |
2050 | static void bgp_evpn_mac_update_on_es_oper_chg(struct bgp_evpn_es *es) | |
2051 | { | |
2052 | struct listnode *node; | |
2053 | struct bgp_path_es_info *es_info; | |
2054 | struct bgp_path_info *pi; | |
70524092 AK |
2055 | struct bgp *bgp; |
2056 | struct bgpevpn *vpn; | |
2057 | ||
2058 | if (!bgp_mh_info->suppress_l3_ecomm_on_inactive_es) | |
2059 | return; | |
2060 | ||
2061 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2062 | zlog_debug("update paths linked to es %s on oper chg", | |
2063 | es->esi_str); | |
2064 | ||
2065 | bgp = bgp_get_evpn(); | |
d656e0ae | 2066 | for (ALL_LIST_ELEMENTS_RO(es->macip_evi_path_list, node, es_info)) { |
70524092 | 2067 | pi = es_info->pi; |
74efb822 AK |
2068 | |
2069 | if (!bgp_evpn_is_valid_local_path(pi)) | |
70524092 AK |
2070 | continue; |
2071 | ||
74efb822 | 2072 | if (!bgp_evpn_is_macip_path(pi)) |
70524092 AK |
2073 | continue; |
2074 | ||
2075 | vpn = bgp_evpn_lookup_vni(bgp, es_info->vni); | |
2076 | if (!vpn) | |
2077 | continue; | |
2078 | ||
2079 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
58bff4d1 | 2080 | zlog_debug( |
70545a29 AK |
2081 | "update path %d %pFX linked to es %s on oper chg", |
2082 | es_info->vni, &pi->net->p, es->esi_str); | |
70524092 AK |
2083 | |
2084 | bgp_evpn_update_type2_route_entry(bgp, vpn, pi->net, pi, | |
2085 | __func__); | |
2086 | } | |
74be8313 AK |
2087 | } |
2088 | ||
74efb822 AK |
2089 | static bool bgp_evpn_is_valid_bgp_path(struct bgp_path_info *pi) |
2090 | { | |
2091 | return (CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
2092 | && pi->type == ZEBRA_ROUTE_BGP | |
2093 | && pi->sub_type == BGP_ROUTE_NORMAL); | |
2094 | } | |
2095 | ||
2096 | /* If an ES is no longer local (or becomes local) we need to re-install | |
2097 | * paths using that ES as destination. This is needed as the criteria | |
2098 | * for best path selection has changed. | |
2099 | */ | |
2100 | static void bgp_evpn_mac_update_on_es_local_chg(struct bgp_evpn_es *es, | |
2101 | bool is_local) | |
2102 | { | |
2103 | struct listnode *node; | |
2104 | struct bgp_path_es_info *es_info; | |
2105 | struct bgp_path_info *pi; | |
74efb822 AK |
2106 | bool tmp_local; |
2107 | struct attr *attr_new; | |
2108 | struct attr attr_tmp; | |
2109 | ||
2110 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2111 | zlog_debug("update paths linked to es %s on chg to %s", | |
2112 | es->esi_str, is_local ? "local" : "non-local"); | |
2113 | ||
2114 | for (ALL_LIST_ELEMENTS_RO(es->macip_global_path_list, node, es_info)) { | |
2115 | pi = es_info->pi; | |
2116 | ||
2117 | /* Consider "valid" remote routes */ | |
2118 | if (!bgp_evpn_is_valid_bgp_path(pi)) | |
2119 | continue; | |
2120 | ||
2121 | if (!pi->attr) | |
2122 | continue; | |
2123 | ||
2124 | tmp_local = !!(pi->attr->es_flags & ATTR_ES_IS_LOCAL); | |
2125 | if (tmp_local == is_local) | |
2126 | continue; | |
2127 | ||
2128 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
2129 | zlog_debug( | |
70545a29 AK |
2130 | "update path %pFX linked to es %s on chg to %s", |
2131 | &pi->net->p, es->esi_str, | |
2132 | is_local ? "local" : "non-local"); | |
74efb822 AK |
2133 | |
2134 | attr_tmp = *pi->attr; | |
2135 | if (is_local) | |
2136 | attr_tmp.es_flags |= ATTR_ES_IS_LOCAL; | |
2137 | else | |
2138 | attr_tmp.es_flags &= ~ATTR_ES_IS_LOCAL; | |
2139 | attr_new = bgp_attr_intern(&attr_tmp); | |
2140 | bgp_attr_unintern(&pi->attr); | |
2141 | pi->attr = attr_new; | |
2142 | bgp_evpn_import_type2_route(pi, 1); | |
2143 | } | |
2144 | } | |
2145 | ||
74be8313 AK |
2146 | static void bgp_evpn_local_es_deactivate(struct bgp *bgp, |
2147 | struct bgp_evpn_es *es) | |
185fb14a | 2148 | { |
185fb14a | 2149 | struct prefix_evpn p; |
c44ab6f1 | 2150 | int ret; |
185fb14a | 2151 | |
c44ab6f1 AK |
2152 | /* withdraw ESR */ |
2153 | /* Delete and withdraw locally learnt ES route */ | |
2154 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
2155 | ret = bgp_evpn_type4_route_delete(bgp, es, &p); | |
2156 | if (ret) { | |
2157 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, | |
2158 | "%u failed to delete type-4 route for ESI %s", | |
2159 | bgp->vrf_id, es->esi_str); | |
185fb14a AK |
2160 | } |
2161 | ||
c44ab6f1 AK |
2162 | /* withdraw EAD-EVI */ |
2163 | if (!bgp_mh_info->ead_evi_adv_for_down_links) | |
2164 | bgp_evpn_local_type1_evi_route_del(bgp, es); | |
185fb14a | 2165 | |
c44ab6f1 | 2166 | /* withdraw EAD-ES */ |
7b0db0e4 | 2167 | bgp_evpn_ead_es_route_delete(bgp, es); |
70524092 AK |
2168 | |
2169 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
2170 | } |
2171 | ||
74be8313 AK |
2172 | /* Process ES link oper-down by withdrawing ES-EAD and ESR */ |
2173 | static void bgp_evpn_local_es_down(struct bgp *bgp, struct bgp_evpn_es *es) | |
c44ab6f1 | 2174 | { |
74be8313 | 2175 | bool old_active; |
c44ab6f1 | 2176 | |
74be8313 AK |
2177 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) |
2178 | return; | |
c44ab6f1 | 2179 | |
74be8313 AK |
2180 | old_active = bgp_evpn_local_es_is_active(es); |
2181 | UNSET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
2182 | ||
2183 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2184 | zlog_debug("local es %s down", es->esi_str); | |
2185 | ||
2186 | if (old_active) | |
2187 | bgp_evpn_local_es_deactivate(bgp, es); | |
2188 | } | |
2189 | ||
2190 | static void bgp_evpn_local_es_activate(struct bgp *bgp, struct bgp_evpn_es *es, | |
2191 | bool regen_ead, bool regen_esr) | |
2192 | { | |
2193 | struct prefix_evpn p; | |
c44ab6f1 | 2194 | |
74e2bd89 AK |
2195 | if (regen_esr) { |
2196 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2197 | zlog_debug("local es %s generate ESR", es->esi_str); | |
2198 | /* generate ESR */ | |
2199 | build_evpn_type4_prefix(&p, &es->esi, es->originator_ip); | |
2200 | if (bgp_evpn_type4_route_update(bgp, es, &p)) | |
2201 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, | |
2202 | "%u: Type4 route creation failure for ESI %s", | |
2203 | bgp->vrf_id, es->esi_str); | |
2204 | } | |
c44ab6f1 | 2205 | |
74e2bd89 AK |
2206 | if (regen_ead) { |
2207 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2208 | zlog_debug("local es %s generate EAD", es->esi_str); | |
2209 | /* generate EAD-EVI */ | |
2210 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
c44ab6f1 | 2211 | |
74e2bd89 | 2212 | /* generate EAD-ES */ |
7b0db0e4 | 2213 | bgp_evpn_ead_es_route_update(bgp, es); |
74e2bd89 | 2214 | } |
70524092 AK |
2215 | |
2216 | bgp_evpn_mac_update_on_es_oper_chg(es); | |
c44ab6f1 AK |
2217 | } |
2218 | ||
74be8313 AK |
2219 | /* Process ES link oper-up by generating ES-EAD and ESR */ |
2220 | static void bgp_evpn_local_es_up(struct bgp *bgp, struct bgp_evpn_es *es, | |
2221 | bool regen_esr) | |
2222 | { | |
2223 | bool regen_ead = false; | |
2224 | bool active = false; | |
2225 | ||
2226 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_OPER_UP)) { | |
2227 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2228 | zlog_debug("local es %s up", es->esi_str); | |
2229 | ||
2230 | SET_FLAG(es->flags, BGP_EVPNES_OPER_UP); | |
2231 | regen_esr = true; | |
2232 | regen_ead = true; | |
2233 | } | |
2234 | ||
2235 | active = bgp_evpn_local_es_is_active(es); | |
2236 | if (active && (regen_ead || regen_esr)) | |
2237 | bgp_evpn_local_es_activate(bgp, es, regen_ead, regen_esr); | |
2238 | } | |
2239 | ||
2240 | /* If an ethernet segment is in LACP bypass we cannot advertise | |
2241 | * reachability to it i.e. EAD-per-ES and ESR is not advertised in | |
2242 | * bypass state. | |
2243 | * PS: EAD-per-EVI will continue to be advertised | |
2244 | */ | |
2245 | static void bgp_evpn_local_es_bypass_update(struct bgp *bgp, | |
2246 | struct bgp_evpn_es *es, bool bypass) | |
2247 | { | |
2248 | bool old_bypass = !!(es->flags & BGP_EVPNES_BYPASS); | |
2249 | bool old_active; | |
2250 | bool new_active; | |
74efb822 AK |
2251 | bool old_is_local; |
2252 | bool is_local; | |
74be8313 AK |
2253 | |
2254 | if (bypass == old_bypass) | |
2255 | return; | |
2256 | ||
2257 | old_active = bgp_evpn_local_es_is_active(es); | |
74efb822 | 2258 | old_is_local = bgp_evpn_is_es_local_and_non_bypass(es); |
74be8313 AK |
2259 | if (bypass) |
2260 | SET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2261 | else | |
2262 | UNSET_FLAG(es->flags, BGP_EVPNES_BYPASS); | |
2263 | ||
2264 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2265 | zlog_debug("local es %s bypass %s", es->esi_str, | |
2266 | bypass ? "set" : "clear"); | |
2267 | ||
2268 | new_active = bgp_evpn_local_es_is_active(es); | |
2269 | if (old_active != new_active) { | |
2270 | if (new_active) | |
2271 | bgp_evpn_local_es_activate(bgp, es, true, true); | |
2272 | else | |
2273 | bgp_evpn_local_es_deactivate(bgp, es); | |
2274 | } | |
74efb822 AK |
2275 | |
2276 | is_local = bgp_evpn_is_es_local_and_non_bypass(es); | |
2277 | if (old_is_local != is_local) | |
2278 | bgp_evpn_mac_update_on_es_local_chg(es, is_local); | |
74be8313 AK |
2279 | } |
2280 | ||
c44ab6f1 AK |
2281 | static void bgp_evpn_local_es_do_del(struct bgp *bgp, struct bgp_evpn_es *es) |
2282 | { | |
2283 | struct bgp_evpn_es_evi *es_evi; | |
2284 | struct listnode *evi_node, *evi_next_node; | |
2285 | ||
2286 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2287 | zlog_debug("del local es %s", es->esi_str); | |
2288 | ||
2289 | /* Delete all local EVPN ES routes from ESI table | |
2290 | * and schedule for processing (to withdraw from peers)) | |
2291 | */ | |
2292 | bgp_evpn_es_route_del_all(bgp, es); | |
2293 | ||
2294 | /* release all local ES EVIs associated with the ES */ | |
2295 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, | |
2296 | evi_next_node, es_evi)) { | |
2297 | bgp_evpn_local_es_evi_do_del(es_evi); | |
2298 | } | |
2299 | ||
2300 | /* Clear local info associated with the ES and free it up if there is | |
2301 | * no remote reference | |
2302 | */ | |
d57e0c05 | 2303 | bgp_evpn_es_local_info_clear(es, false); |
c44ab6f1 AK |
2304 | } |
2305 | ||
74efb822 | 2306 | bool bgp_evpn_is_esi_local_and_non_bypass(esi_t *esi) |
7904e9fd AK |
2307 | { |
2308 | struct bgp_evpn_es *es = NULL; | |
2309 | ||
2310 | /* Lookup ESI hash - should exist. */ | |
2311 | es = bgp_evpn_es_find(esi); | |
74efb822 AK |
2312 | |
2313 | return es && bgp_evpn_is_es_local_and_non_bypass(es); | |
7904e9fd AK |
2314 | } |
2315 | ||
c44ab6f1 AK |
2316 | int bgp_evpn_local_es_del(struct bgp *bgp, esi_t *esi) |
2317 | { | |
2318 | struct bgp_evpn_es *es = NULL; | |
2319 | ||
2320 | /* Lookup ESI hash - should exist. */ | |
2321 | es = bgp_evpn_es_find(esi); | |
2322 | if (!es) { | |
eaf80288 DA |
2323 | flog_warn(EC_BGP_EVPN_ESI, "%u: ES missing at local ES DEL", |
2324 | bgp->vrf_id); | |
c44ab6f1 AK |
2325 | return -1; |
2326 | } | |
2327 | ||
2328 | bgp_evpn_local_es_do_del(bgp, es); | |
2329 | return 0; | |
2330 | } | |
2331 | ||
2332 | /* Handle device to ES id association. Results in the creation of a local | |
2333 | * ES. | |
2334 | */ | |
2335 | int bgp_evpn_local_es_add(struct bgp *bgp, esi_t *esi, | |
74e2bd89 | 2336 | struct in_addr originator_ip, bool oper_up, |
74be8313 | 2337 | uint16_t df_pref, bool bypass) |
c44ab6f1 | 2338 | { |
c44ab6f1 AK |
2339 | struct bgp_evpn_es *es; |
2340 | bool new_es = true; | |
74e2bd89 | 2341 | bool regen_esr = false; |
c44ab6f1 AK |
2342 | |
2343 | /* create the new es */ | |
2344 | es = bgp_evpn_es_find(esi); | |
2345 | if (es) { | |
2346 | if (CHECK_FLAG(es->flags, BGP_EVPNES_LOCAL)) | |
2347 | new_es = false; | |
573eeb2b | 2348 | } else |
c44ab6f1 | 2349 | es = bgp_evpn_es_new(bgp, esi); |
c44ab6f1 AK |
2350 | |
2351 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
74be8313 AK |
2352 | zlog_debug("add local es %s orig-ip %pI4 df_pref %u %s", |
2353 | es->esi_str, &originator_ip, df_pref, | |
2354 | bypass ? "bypass" : ""); | |
c44ab6f1 AK |
2355 | |
2356 | es->originator_ip = originator_ip; | |
74e2bd89 AK |
2357 | if (df_pref != es->df_pref) { |
2358 | es->df_pref = df_pref; | |
2359 | regen_esr = true; | |
2360 | } | |
c44ab6f1 AK |
2361 | bgp_evpn_es_local_info_set(bgp, es); |
2362 | ||
2363 | /* import all remote Type-4 routes in the ES table */ | |
2364 | if (new_es) | |
2365 | bgp_evpn_type4_remote_routes_import(bgp, es, | |
2366 | true /* install */); | |
2367 | ||
2368 | /* create and advertise EAD-EVI routes for the ES - | |
2369 | * XXX - till an ES-EVI reference is created there is really nothing to | |
2370 | * advertise | |
2371 | */ | |
2372 | if (bgp_mh_info->ead_evi_adv_for_down_links) | |
2373 | bgp_evpn_local_type1_evi_route_add(bgp, es); | |
2374 | ||
74be8313 AK |
2375 | bgp_evpn_local_es_bypass_update(bgp, es, bypass); |
2376 | ||
c44ab6f1 AK |
2377 | /* If the ES link is operationally up generate EAD-ES. EAD-EVI |
2378 | * can be generated even if the link is inactive. | |
2379 | */ | |
2380 | if (oper_up) | |
74e2bd89 | 2381 | bgp_evpn_local_es_up(bgp, es, regen_esr); |
c44ab6f1 AK |
2382 | else |
2383 | bgp_evpn_local_es_down(bgp, es); | |
2384 | ||
2385 | return 0; | |
2386 | } | |
2387 | ||
7b0db0e4 AK |
2388 | static void bgp_evpn_es_json_frag_fill(json_object *json_frags, |
2389 | struct bgp_evpn_es *es) | |
2390 | { | |
2391 | json_object *json_frag; | |
7b0db0e4 AK |
2392 | struct listnode *node; |
2393 | struct bgp_evpn_es_frag *es_frag; | |
2394 | ||
2395 | for (ALL_LIST_ELEMENTS_RO(es->es_frag_list, node, es_frag)) { | |
2396 | json_frag = json_object_new_object(); | |
2397 | ||
4a8cd6ad PG |
2398 | json_object_string_addf(json_frag, "rd", "%pRDP", |
2399 | &es_frag->prd); | |
7b0db0e4 AK |
2400 | json_object_int_add(json_frag, "eviCount", |
2401 | listcount(es_frag->es_evi_frag_list)); | |
2402 | ||
2403 | json_object_array_add(json_frags, json_frag); | |
2404 | } | |
2405 | } | |
2406 | ||
2407 | static void bgp_evpn_es_frag_show_detail(struct vty *vty, | |
2408 | struct bgp_evpn_es *es) | |
2409 | { | |
2410 | struct listnode *node; | |
7b0db0e4 AK |
2411 | struct bgp_evpn_es_frag *es_frag; |
2412 | ||
2413 | for (ALL_LIST_ELEMENTS_RO(es->es_frag_list, node, es_frag)) { | |
4a8cd6ad | 2414 | vty_out(vty, " %pRDP EVIs: %d\n", &es_frag->prd, |
7b0db0e4 AK |
2415 | listcount(es_frag->es_evi_frag_list)); |
2416 | } | |
2417 | } | |
2418 | ||
9e0c2fd1 AK |
2419 | static char *bgp_evpn_es_vteps_str(char *vtep_str, struct bgp_evpn_es *es, |
2420 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
2421 | { |
2422 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2423 | struct listnode *node; | |
2424 | struct bgp_evpn_es_vtep *es_vtep; | |
2425 | bool first = true; | |
07380148 | 2426 | char ip_buf[INET_ADDRSTRLEN]; |
c44ab6f1 AK |
2427 | |
2428 | vtep_str[0] = '\0'; | |
2429 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2430 | vtep_flag_str[0] = '\0'; | |
23d0a753 | 2431 | |
c44ab6f1 | 2432 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) |
9e0c2fd1 | 2433 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 2434 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) |
9e0c2fd1 | 2435 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); |
c44ab6f1 AK |
2436 | |
2437 | if (!strlen(vtep_flag_str)) | |
9e0c2fd1 AK |
2438 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); |
2439 | if (first) | |
c44ab6f1 | 2440 | first = false; |
9e0c2fd1 AK |
2441 | else |
2442 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 2443 | strlcat(vtep_str, |
ec779825 AK |
2444 | inet_ntop(AF_INET, &es_vtep->vtep_ip, ip_buf, |
2445 | sizeof(ip_buf)), | |
23d0a753 | 2446 | vtep_str_size); |
9e0c2fd1 AK |
2447 | strlcat(vtep_str, "(", vtep_str_size); |
2448 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
2449 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
2450 | } |
2451 | ||
2452 | return vtep_str; | |
2453 | } | |
2454 | ||
c44ab6f1 AK |
2455 | static void bgp_evpn_es_json_vtep_fill(json_object *json_vteps, |
2456 | struct bgp_evpn_es_vtep *es_vtep) | |
2457 | { | |
2458 | json_object *json_vtep_entry; | |
2459 | json_object *json_flags; | |
2460 | ||
2461 | json_vtep_entry = json_object_new_object(); | |
2462 | ||
c949c771 DA |
2463 | json_object_string_addf(json_vtep_entry, "vtep_ip", "%pI4", |
2464 | &es_vtep->vtep_ip); | |
c44ab6f1 AK |
2465 | if (es_vtep->flags & (BGP_EVPNES_VTEP_ESR | |
2466 | BGP_EVPNES_VTEP_ACTIVE)) { | |
2467 | json_flags = json_object_new_array(); | |
2468 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2469 | json_array_string_add(json_flags, "esr"); | |
2470 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2471 | json_array_string_add(json_flags, "active"); | |
2472 | json_object_object_add(json_vtep_entry, "flags", json_flags); | |
74e2bd89 AK |
2473 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) { |
2474 | json_object_int_add(json_vtep_entry, "dfPreference", | |
2475 | es_vtep->df_pref); | |
2476 | json_object_int_add(json_vtep_entry, "dfAlgorithm", | |
2477 | es_vtep->df_pref); | |
2478 | } | |
c44ab6f1 AK |
2479 | } |
2480 | ||
2481 | json_object_array_add(json_vteps, | |
2482 | json_vtep_entry); | |
2483 | } | |
2484 | ||
74e2bd89 AK |
2485 | static void bgp_evpn_es_vteps_show_detail(struct vty *vty, |
2486 | struct bgp_evpn_es *es) | |
2487 | { | |
2488 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
2489 | struct listnode *node; | |
2490 | struct bgp_evpn_es_vtep *es_vtep; | |
2491 | char alg_buf[EVPN_DF_ALG_STR_LEN]; | |
2492 | ||
2493 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
2494 | vtep_flag_str[0] = '\0'; | |
2495 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2496 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); | |
2497 | if (es_vtep->flags & BGP_EVPNES_VTEP_ACTIVE) | |
2498 | strlcat(vtep_flag_str, "A", sizeof(vtep_flag_str)); | |
2499 | ||
2500 | if (!strlen(vtep_flag_str)) | |
2501 | strlcat(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
2502 | ||
ec779825 | 2503 | vty_out(vty, " %pI4 flags: %s", &es_vtep->vtep_ip, |
74e2bd89 AK |
2504 | vtep_flag_str); |
2505 | ||
2506 | if (es_vtep->flags & BGP_EVPNES_VTEP_ESR) | |
2507 | vty_out(vty, " df_alg: %s df_pref: %u\n", | |
2508 | evpn_es_df_alg2str(es_vtep->df_alg, alg_buf, | |
2509 | sizeof(alg_buf)), | |
2510 | es_vtep->df_pref); | |
2511 | else | |
2512 | vty_out(vty, "\n"); | |
2513 | } | |
2514 | } | |
2515 | ||
c44ab6f1 AK |
2516 | static void bgp_evpn_es_show_entry(struct vty *vty, |
2517 | struct bgp_evpn_es *es, json_object *json) | |
2518 | { | |
c44ab6f1 AK |
2519 | struct listnode *node; |
2520 | struct bgp_evpn_es_vtep *es_vtep; | |
2521 | ||
2522 | if (json) { | |
2523 | json_object *json_vteps; | |
2524 | json_object *json_types; | |
2525 | ||
2526 | json_object_string_add(json, "esi", es->esi_str); | |
7b0db0e4 | 2527 | if (es->es_base_frag) |
4a8cd6ad | 2528 | json_object_string_addf(json, "rd", "%pRDP", |
c4f64ea9 | 2529 | &es->es_base_frag->prd); |
c44ab6f1 AK |
2530 | |
2531 | if (es->flags & (BGP_EVPNES_LOCAL | BGP_EVPNES_REMOTE)) { | |
2532 | json_types = json_object_new_array(); | |
2533 | if (es->flags & BGP_EVPNES_LOCAL) | |
2534 | json_array_string_add(json_types, "local"); | |
2535 | if (es->flags & BGP_EVPNES_REMOTE) | |
2536 | json_array_string_add(json_types, "remote"); | |
2537 | json_object_object_add(json, "type", json_types); | |
2538 | } | |
2539 | ||
2540 | if (listcount(es->es_vtep_list)) { | |
2541 | json_vteps = json_object_new_array(); | |
2542 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, | |
2543 | node, es_vtep)) { | |
2544 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2545 | } | |
2546 | json_object_object_add(json, "vteps", json_vteps); | |
2547 | } | |
2548 | json_object_int_add(json, "vniCount", | |
2549 | listcount(es->es_evi_list)); | |
2550 | } else { | |
2551 | char type_str[4]; | |
2552 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
2553 | ||
2554 | type_str[0] = '\0'; | |
74be8313 AK |
2555 | if (es->flags & BGP_EVPNES_BYPASS) |
2556 | strlcat(type_str, "B", sizeof(type_str)); | |
c44ab6f1 | 2557 | if (es->flags & BGP_EVPNES_LOCAL) |
9e0c2fd1 | 2558 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2559 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2560 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2561 | if (es->inconsistencies) |
9e0c2fd1 | 2562 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 2563 | |
9e0c2fd1 | 2564 | bgp_evpn_es_vteps_str(vtep_str, es, sizeof(vtep_str)); |
c44ab6f1 | 2565 | |
4a8cd6ad | 2566 | vty_out(vty, "%-30s %-5s %-21pRDP %-8d %s\n", es->esi_str, |
c4f64ea9 DA |
2567 | type_str, &es->es_base_frag->prd, |
2568 | listcount(es->es_evi_list), vtep_str); | |
c44ab6f1 AK |
2569 | } |
2570 | } | |
2571 | ||
2572 | static void bgp_evpn_es_show_entry_detail(struct vty *vty, | |
2573 | struct bgp_evpn_es *es, json_object *json) | |
2574 | { | |
2575 | if (json) { | |
2576 | json_object *json_flags; | |
2577 | json_object *json_incons; | |
74e2bd89 | 2578 | json_object *json_vteps; |
7b0db0e4 | 2579 | json_object *json_frags; |
74e2bd89 AK |
2580 | struct listnode *node; |
2581 | struct bgp_evpn_es_vtep *es_vtep; | |
c44ab6f1 AK |
2582 | |
2583 | /* Add the "brief" info first */ | |
2584 | bgp_evpn_es_show_entry(vty, es, json); | |
74be8313 AK |
2585 | if (es->flags |
2586 | & (BGP_EVPNES_OPER_UP | BGP_EVPNES_ADV_EVI | |
2587 | | BGP_EVPNES_BYPASS)) { | |
c44ab6f1 AK |
2588 | json_flags = json_object_new_array(); |
2589 | if (es->flags & BGP_EVPNES_OPER_UP) | |
2590 | json_array_string_add(json_flags, "up"); | |
2591 | if (es->flags & BGP_EVPNES_ADV_EVI) | |
2592 | json_array_string_add(json_flags, | |
2593 | "advertiseEVI"); | |
74be8313 AK |
2594 | if (es->flags & BGP_EVPNES_BYPASS) |
2595 | json_array_string_add(json_flags, "bypass"); | |
c44ab6f1 AK |
2596 | json_object_object_add(json, "flags", json_flags); |
2597 | } | |
c949c771 DA |
2598 | json_object_string_addf(json, "originator_ip", "%pI4", |
2599 | &es->originator_ip); | |
c44ab6f1 AK |
2600 | json_object_int_add(json, "remoteVniCount", |
2601 | es->remote_es_evi_cnt); | |
229587fb AK |
2602 | json_object_int_add(json, "vrfCount", |
2603 | listcount(es->es_vrf_list)); | |
2604 | json_object_int_add(json, "macipPathCount", | |
d656e0ae | 2605 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2606 | json_object_int_add(json, "macipGlobalPathCount", |
2607 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2608 | json_object_int_add(json, "inconsistentVniVtepCount", |
2609 | es->incons_evi_vtep_cnt); | |
74e2bd89 AK |
2610 | if (listcount(es->es_vtep_list)) { |
2611 | json_vteps = json_object_new_array(); | |
2612 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, | |
2613 | es_vtep)) { | |
2614 | bgp_evpn_es_json_vtep_fill(json_vteps, es_vtep); | |
2615 | } | |
2616 | json_object_object_add(json, "vteps", json_vteps); | |
2617 | } | |
7b0db0e4 AK |
2618 | if (listcount(es->es_frag_list)) { |
2619 | json_frags = json_object_new_array(); | |
2620 | bgp_evpn_es_json_frag_fill(json_frags, es); | |
2621 | json_object_object_add(json, "fragments", json_frags); | |
2622 | } | |
c44ab6f1 AK |
2623 | if (es->inconsistencies) { |
2624 | json_incons = json_object_new_array(); | |
2625 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
2626 | json_array_string_add(json_incons, | |
2627 | "vni-vtep-mismatch"); | |
2628 | json_object_object_add(json, "inconsistencies", | |
2629 | json_incons); | |
2630 | } | |
2631 | } else { | |
2632 | char incons_str[BGP_EVPNES_INCONS_STR_SZ]; | |
2633 | char type_str[4]; | |
c44ab6f1 AK |
2634 | |
2635 | type_str[0] = '\0'; | |
2636 | if (es->flags & BGP_EVPNES_LOCAL) | |
9e0c2fd1 | 2637 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 2638 | if (es->flags & BGP_EVPNES_REMOTE) |
9e0c2fd1 | 2639 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 2640 | |
c44ab6f1 AK |
2641 | vty_out(vty, "ESI: %s\n", es->esi_str); |
2642 | vty_out(vty, " Type: %s\n", type_str); | |
4a8cd6ad | 2643 | vty_out(vty, " RD: %pRDP\n", &es->es_base_frag->prd); |
23d0a753 | 2644 | vty_out(vty, " Originator-IP: %pI4\n", &es->originator_ip); |
74e2bd89 AK |
2645 | if (es->flags & BGP_EVPNES_LOCAL) |
2646 | vty_out(vty, " Local ES DF preference: %u\n", | |
2647 | es->df_pref); | |
74be8313 AK |
2648 | if (es->flags & BGP_EVPNES_BYPASS) |
2649 | vty_out(vty, " LACP bypass: on\n"); | |
c44ab6f1 AK |
2650 | vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); |
2651 | vty_out(vty, " Remote VNI Count: %d\n", | |
2652 | es->remote_es_evi_cnt); | |
229587fb | 2653 | vty_out(vty, " VRF Count: %d\n", listcount(es->es_vrf_list)); |
58bff4d1 | 2654 | vty_out(vty, " MACIP EVI Path Count: %d\n", |
d656e0ae | 2655 | listcount(es->macip_evi_path_list)); |
58bff4d1 AK |
2656 | vty_out(vty, " MACIP Global Path Count: %d\n", |
2657 | listcount(es->macip_global_path_list)); | |
c44ab6f1 AK |
2658 | vty_out(vty, " Inconsistent VNI VTEP Count: %d\n", |
2659 | es->incons_evi_vtep_cnt); | |
2660 | if (es->inconsistencies) { | |
2661 | incons_str[0] = '\0'; | |
2662 | if (es->inconsistencies & BGP_EVPNES_INCONS_VTEP_LIST) | |
9e0c2fd1 AK |
2663 | strlcat(incons_str, "vni-vtep-mismatch", |
2664 | sizeof(incons_str)); | |
c44ab6f1 | 2665 | } else { |
9e0c2fd1 | 2666 | strlcpy(incons_str, "-", sizeof(incons_str)); |
c44ab6f1 AK |
2667 | } |
2668 | vty_out(vty, " Inconsistencies: %s\n", | |
2669 | incons_str); | |
7b0db0e4 AK |
2670 | if (listcount(es->es_frag_list)) { |
2671 | vty_out(vty, " Fragments:\n"); | |
2672 | bgp_evpn_es_frag_show_detail(vty, es); | |
2673 | } | |
74e2bd89 AK |
2674 | if (listcount(es->es_vtep_list)) { |
2675 | vty_out(vty, " VTEPs:\n"); | |
2676 | bgp_evpn_es_vteps_show_detail(vty, es); | |
2677 | } | |
c44ab6f1 AK |
2678 | vty_out(vty, "\n"); |
2679 | } | |
2680 | } | |
2681 | ||
2682 | /* Display all ESs */ | |
2683 | void bgp_evpn_es_show(struct vty *vty, bool uj, bool detail) | |
2684 | { | |
2685 | struct bgp_evpn_es *es; | |
9c7edc03 | 2686 | json_object *json_array = NULL; |
c44ab6f1 AK |
2687 | json_object *json = NULL; |
2688 | ||
2689 | if (uj) { | |
2690 | /* create an array of ESs */ | |
2691 | json_array = json_object_new_array(); | |
2692 | } else { | |
2693 | if (!detail) { | |
2694 | vty_out(vty, | |
74be8313 | 2695 | "ES Flags: B - bypass, L local, R remote, I inconsistent\n"); |
c44ab6f1 AK |
2696 | vty_out(vty, |
2697 | "VTEP Flags: E ESR/Type-4, A active nexthop\n"); | |
2698 | vty_out(vty, | |
2699 | "%-30s %-5s %-21s %-8s %s\n", | |
2700 | "ESI", "Flags", "RD", "#VNIs", "VTEPs"); | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
2705 | if (uj) | |
2706 | /* create a separate json object for each ES */ | |
2707 | json = json_object_new_object(); | |
2708 | if (detail) | |
2709 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2710 | else | |
2711 | bgp_evpn_es_show_entry(vty, es, json); | |
2712 | /* add ES to the json array */ | |
2713 | if (uj) | |
2714 | json_object_array_add(json_array, json); | |
2715 | } | |
2716 | ||
2717 | /* print the array of json-ESs */ | |
c48349e3 | 2718 | if (uj) |
75eeda93 | 2719 | vty_json(vty, json_array); |
c44ab6f1 AK |
2720 | } |
2721 | ||
2722 | /* Display specific ES */ | |
2723 | void bgp_evpn_es_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
2724 | { | |
2725 | struct bgp_evpn_es *es; | |
2726 | json_object *json = NULL; | |
2727 | ||
2728 | if (uj) | |
2729 | json = json_object_new_object(); | |
2730 | ||
2731 | es = bgp_evpn_es_find(esi); | |
2732 | if (es) { | |
2733 | bgp_evpn_es_show_entry_detail(vty, es, json); | |
2734 | } else { | |
2735 | if (!uj) | |
2736 | vty_out(vty, "ESI not found\n"); | |
2737 | } | |
2738 | ||
c48349e3 | 2739 | if (uj) |
75eeda93 | 2740 | vty_json(vty, json); |
c44ab6f1 AK |
2741 | } |
2742 | ||
c589d847 AK |
2743 | /*****************************************************************************/ |
2744 | /* Ethernet Segment to VRF association - | |
2745 | * 1. Each ES-EVI entry is associated with a tenant VRF. This associaton | |
2746 | * triggers the creation of an ES-VRF entry. | |
2747 | * 2. The ES-VRF entry is maintained for the purpose of L3-NHG creation | |
2748 | * 3. Type-2/MAC-IP routes are imported into a tenant VRF and programmed as | |
2749 | * a /32 or host route entry in the dataplane. If the destination of | |
2750 | * the host route is a remote-ES the route is programmed with the | |
2751 | * corresponding (keyed in by {vrf,ES-id}) L3-NHG. | |
2752 | * 4. The reason for this indirection (route->L3-NHG, L3-NHG->list-of-VTEPs) | |
2753 | * is to avoid route updates to the dplane when a remote-ES link flaps i.e. | |
2754 | * instead of updating all the dependent routes the NHG's contents are updated. | |
2755 | * This reduces the amount of datplane updates (nhg updates vs. route updates) | |
2756 | * allowing for a faster failover. | |
2757 | * | |
2758 | * XXX - can the L3 SVI index change without change in vpn->bgp_vrf | |
2759 | * association? If yes we need to handle that by updating all the L3 NHGs | |
2760 | * in that VRF. | |
2761 | */ | |
2762 | /******************************** L3 NHG management *************************/ | |
8bcb09a1 AK |
2763 | static void bgp_evpn_l3nhg_zebra_add_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, |
2764 | bool v4_nhg) | |
c589d847 | 2765 | { |
8bcb09a1 AK |
2766 | uint32_t nhg_id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; |
2767 | struct bgp_evpn_es *es = es_vrf->es; | |
c589d847 AK |
2768 | struct listnode *node; |
2769 | struct bgp_evpn_es_vtep *es_vtep; | |
8bcb09a1 AK |
2770 | struct nexthop nh; |
2771 | struct zapi_nexthop *api_nh; | |
2772 | struct zapi_nhg api_nhg = {}; | |
2773 | ||
2774 | /* Skip installation of L3-NHG if host routes used */ | |
2775 | if (!nhg_id) | |
2776 | return; | |
c589d847 AK |
2777 | |
2778 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 AK |
2779 | zlog_debug("es %s vrf %u %s nhg %u to zebra", es->esi_str, |
2780 | es_vrf->bgp_vrf->vrf_id, | |
2781 | v4_nhg ? "v4_nhg" : "v6_nhg", nhg_id); | |
2782 | ||
23aa35ad AK |
2783 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, true, v4_nhg, nhg_id, es_vrf); |
2784 | ||
8bcb09a1 AK |
2785 | /* only the gateway ip changes for each NH. rest of the params |
2786 | * are constant | |
2787 | */ | |
2788 | memset(&nh, 0, sizeof(nh)); | |
2789 | nh.vrf_id = es_vrf->bgp_vrf->vrf_id; | |
2790 | nh.flags = NEXTHOP_FLAG_ONLINK; | |
2791 | nh.ifindex = es_vrf->bgp_vrf->l3vni_svi_ifindex; | |
2792 | nh.weight = 1; | |
2793 | nh.type = | |
2794 | v4_nhg ? NEXTHOP_TYPE_IPV4_IFINDEX : NEXTHOP_TYPE_IPV6_IFINDEX; | |
2795 | ||
2796 | api_nhg.id = nhg_id; | |
c589d847 | 2797 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { |
8bcb09a1 AK |
2798 | if (!CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) |
2799 | continue; | |
2800 | ||
719b209c MS |
2801 | /* Don't overrun the zapi buffer. */ |
2802 | if (api_nhg.nexthop_num == MULTIPATH_NUM) | |
2803 | break; | |
2804 | ||
8bcb09a1 AK |
2805 | /* overwrite the gw */ |
2806 | if (v4_nhg) | |
2807 | nh.gate.ipv4 = es_vtep->vtep_ip; | |
2808 | else | |
2809 | ipv4_to_ipv4_mapped_ipv6(&nh.gate.ipv6, | |
2810 | es_vtep->vtep_ip); | |
2811 | ||
2812 | /* convert to zapi format */ | |
2813 | api_nh = &api_nhg.nexthops[api_nhg.nexthop_num]; | |
2814 | zapi_nexthop_from_nexthop(api_nh, &nh); | |
2815 | ||
2816 | ++api_nhg.nexthop_num; | |
2817 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2818 | zlog_debug("nhg %u vtep %pI4 l3-svi %d", api_nhg.id, | |
2819 | &es_vtep->vtep_ip, | |
2820 | es_vrf->bgp_vrf->l3vni_svi_ifindex); | |
23aa35ad AK |
2821 | |
2822 | frrtrace(3, frr_bgp, evpn_mh_nh_zsend, nhg_id, es_vtep, es_vrf); | |
c589d847 AK |
2823 | } |
2824 | ||
8bcb09a1 AK |
2825 | if (!api_nhg.nexthop_num) |
2826 | return; | |
2827 | ||
8bcb09a1 | 2828 | zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg); |
c589d847 AK |
2829 | } |
2830 | ||
8bcb09a1 AK |
2831 | static bool bgp_evpn_l3nhg_zebra_ok(struct bgp_evpn_es_vrf *es_vrf) |
2832 | { | |
c2b7d418 | 2833 | if (!bgp_mh_info->host_routes_use_l3nhg) |
8bcb09a1 AK |
2834 | return false; |
2835 | ||
2836 | /* Check socket. */ | |
2837 | if (!zclient || zclient->sock < 0) | |
2838 | return false; | |
2839 | ||
2840 | return true; | |
2841 | } | |
2842 | ||
2843 | static void bgp_evpn_l3nhg_zebra_add(struct bgp_evpn_es_vrf *es_vrf) | |
c589d847 | 2844 | { |
8bcb09a1 AK |
2845 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) |
2846 | return; | |
2847 | ||
2848 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2849 | bgp_evpn_l3nhg_zebra_add_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
2850 | } | |
2851 | ||
2852 | static void bgp_evpn_l3nhg_zebra_del_v4_or_v6(struct bgp_evpn_es_vrf *es_vrf, | |
2853 | bool v4_nhg) | |
2854 | { | |
2855 | struct zapi_nhg api_nhg = {}; | |
2856 | ||
2857 | api_nhg.id = v4_nhg ? es_vrf->nhg_id : es_vrf->v6_nhg_id; | |
2858 | ||
2859 | /* Skip installation of L3-NHG if host routes used */ | |
2860 | if (!api_nhg.id) | |
2861 | return; | |
2862 | ||
c589d847 | 2863 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 | 2864 | zlog_debug("es %s vrf %u %s nhg %u to zebra", |
c589d847 | 2865 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
8bcb09a1 AK |
2866 | v4_nhg ? "v4_nhg" : "v6_nhg", api_nhg.id); |
2867 | ||
23aa35ad AK |
2868 | |
2869 | frrtrace(4, frr_bgp, evpn_mh_nhg_zsend, false, v4_nhg, api_nhg.id, | |
2870 | es_vrf); | |
2871 | ||
8bcb09a1 AK |
2872 | zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg); |
2873 | } | |
c589d847 | 2874 | |
8bcb09a1 AK |
2875 | static void bgp_evpn_l3nhg_zebra_del(struct bgp_evpn_es_vrf *es_vrf) |
2876 | { | |
2877 | if (!bgp_evpn_l3nhg_zebra_ok(es_vrf)) | |
2878 | return; | |
2879 | ||
2880 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, true /*v4_nhg*/); | |
2881 | bgp_evpn_l3nhg_zebra_del_v4_or_v6(es_vrf, false /*v4_nhg*/); | |
c589d847 AK |
2882 | } |
2883 | ||
2884 | static void bgp_evpn_l3nhg_deactivate(struct bgp_evpn_es_vrf *es_vrf) | |
2885 | { | |
2886 | if (!(es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE)) | |
2887 | return; | |
2888 | ||
2889 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2890 | zlog_debug("es %s vrf %u nhg %u de-activate", |
c589d847 AK |
2891 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2892 | es_vrf->nhg_id); | |
2893 | bgp_evpn_l3nhg_zebra_del(es_vrf); | |
2894 | es_vrf->flags &= ~BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2895 | /* MAC-IPs can now be installed via the L3NHG */ |
2896 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg-deactivate"); | |
c589d847 AK |
2897 | } |
2898 | ||
2899 | static void bgp_evpn_l3nhg_activate(struct bgp_evpn_es_vrf *es_vrf, bool update) | |
2900 | { | |
2901 | if (!bgp_evpn_es_get_active_vtep_cnt(es_vrf->es)) { | |
2902 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
2903 | return; | |
2904 | } | |
2905 | ||
2906 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) { | |
2907 | if (!update) | |
2908 | return; | |
2909 | } else { | |
2910 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 2911 | zlog_debug("es %s vrf %u nhg %u activate", |
c589d847 AK |
2912 | es_vrf->es->esi_str, es_vrf->bgp_vrf->vrf_id, |
2913 | es_vrf->nhg_id); | |
2914 | es_vrf->flags |= BGP_EVPNES_VRF_NHG_ACTIVE; | |
58bff4d1 AK |
2915 | /* MAC-IPs can now be installed via the L3NHG */ |
2916 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "l3nhg_activate"); | |
c589d847 AK |
2917 | } |
2918 | ||
2919 | bgp_evpn_l3nhg_zebra_add(es_vrf); | |
2920 | } | |
2921 | ||
2922 | /* when a VTEP is activated or de-activated against an ES associated | |
2923 | * VRFs' NHG needs to be updated | |
2924 | */ | |
2925 | static void bgp_evpn_l3nhg_update_on_vtep_chg(struct bgp_evpn_es *es) | |
2926 | { | |
2927 | struct bgp_evpn_es_vrf *es_vrf; | |
2928 | struct listnode *es_vrf_node; | |
2929 | ||
2930 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
2931 | zlog_debug("es %s nhg update on vtep chg", es->esi_str); | |
2932 | ||
2933 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) | |
2934 | bgp_evpn_l3nhg_activate(es_vrf, true /* update */); | |
2935 | } | |
2936 | ||
2937 | /* compare ES-IDs for the ES-VRF RB tree maintained per-VRF */ | |
2938 | static int bgp_es_vrf_rb_cmp(const struct bgp_evpn_es_vrf *es_vrf1, | |
2939 | const struct bgp_evpn_es_vrf *es_vrf2) | |
2940 | { | |
2941 | return memcmp(&es_vrf1->es->esi, &es_vrf2->es->esi, ESI_BYTES); | |
2942 | } | |
2943 | RB_GENERATE(bgp_es_vrf_rb_head, bgp_evpn_es_vrf, rb_node, bgp_es_vrf_rb_cmp); | |
2944 | ||
2945 | /* Initialize the ES tables maintained per-tenant vrf */ | |
2946 | void bgp_evpn_vrf_es_init(struct bgp *bgp_vrf) | |
2947 | { | |
2948 | /* Initialize the ES-VRF RB tree */ | |
2949 | RB_INIT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree); | |
2950 | } | |
2951 | ||
2952 | /* find the ES-VRF in the per-VRF RB tree */ | |
2953 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_find(struct bgp_evpn_es *es, | |
2954 | struct bgp *bgp_vrf) | |
2955 | { | |
2956 | struct bgp_evpn_es_vrf es_vrf; | |
2957 | ||
2958 | es_vrf.es = es; | |
2959 | ||
2960 | return RB_FIND(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, &es_vrf); | |
2961 | } | |
2962 | ||
2963 | /* allocate a new ES-VRF and setup L3NHG for it */ | |
2964 | static struct bgp_evpn_es_vrf *bgp_evpn_es_vrf_create(struct bgp_evpn_es *es, | |
2965 | struct bgp *bgp_vrf) | |
2966 | { | |
2967 | struct bgp_evpn_es_vrf *es_vrf; | |
2968 | ||
2969 | es_vrf = XCALLOC(MTYPE_BGP_EVPN_ES_VRF, sizeof(*es_vrf)); | |
2970 | ||
2971 | es_vrf->es = es; | |
2972 | es_vrf->bgp_vrf = bgp_vrf; | |
2973 | ||
2974 | /* insert into the VRF-ESI rb tree */ | |
92809558 | 2975 | RB_INSERT(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); |
c589d847 AK |
2976 | |
2977 | /* add to the ES's VRF list */ | |
2978 | listnode_init(&es_vrf->es_listnode, es_vrf); | |
2979 | listnode_add(es->es_vrf_list, &es_vrf->es_listnode); | |
2980 | ||
2981 | /* setup the L3 NHG id for the ES */ | |
2982 | es_vrf->nhg_id = bgp_l3nhg_id_alloc(); | |
8bcb09a1 AK |
2983 | es_vrf->v6_nhg_id = bgp_l3nhg_id_alloc(); |
2984 | ||
c589d847 | 2985 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
8bcb09a1 AK |
2986 | zlog_debug("es %s vrf %u nhg %u v6_nhg %d create", es->esi_str, |
2987 | bgp_vrf->vrf_id, es_vrf->nhg_id, es_vrf->v6_nhg_id); | |
c589d847 AK |
2988 | bgp_evpn_l3nhg_activate(es_vrf, false /* update */); |
2989 | ||
36dd4574 AK |
2990 | /* update paths in the VRF that may already be associated with |
2991 | * this destination ES | |
2992 | */ | |
58bff4d1 | 2993 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-create"); |
36dd4574 | 2994 | |
c589d847 AK |
2995 | return es_vrf; |
2996 | } | |
2997 | ||
2998 | /* remove the L3-NHG associated with the ES-VRF and free it */ | |
2999 | static void bgp_evpn_es_vrf_delete(struct bgp_evpn_es_vrf *es_vrf) | |
3000 | { | |
3001 | struct bgp_evpn_es *es = es_vrf->es; | |
3002 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
3003 | ||
3004 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
8bcb09a1 | 3005 | zlog_debug("es %s vrf %u nhg %u delete", es->esi_str, |
c589d847 AK |
3006 | bgp_vrf->vrf_id, es_vrf->nhg_id); |
3007 | ||
3008 | /* Remove the NHG resources */ | |
3009 | bgp_evpn_l3nhg_deactivate(es_vrf); | |
3010 | if (es_vrf->nhg_id) | |
3011 | bgp_l3nhg_id_free(es_vrf->nhg_id); | |
3012 | es_vrf->nhg_id = 0; | |
8bcb09a1 AK |
3013 | if (es_vrf->v6_nhg_id) |
3014 | bgp_l3nhg_id_free(es_vrf->v6_nhg_id); | |
3015 | es_vrf->v6_nhg_id = 0; | |
c589d847 AK |
3016 | |
3017 | /* remove from the ES's VRF list */ | |
3018 | list_delete_node(es->es_vrf_list, &es_vrf->es_listnode); | |
3019 | ||
3020 | /* remove from the VRF-ESI rb tree */ | |
3021 | RB_REMOVE(bgp_es_vrf_rb_head, &bgp_vrf->es_vrf_rb_tree, es_vrf); | |
3022 | ||
d656e0ae AK |
3023 | /* update paths in the VRF that may already be associated with |
3024 | * this destination ES | |
3025 | */ | |
58bff4d1 | 3026 | bgp_evpn_es_path_update_on_es_vrf_chg(es_vrf, "es-vrf-delete"); |
d656e0ae | 3027 | |
c589d847 AK |
3028 | XFREE(MTYPE_BGP_EVPN_ES_VRF, es_vrf); |
3029 | } | |
3030 | ||
3031 | /* deref and delete if there are no references */ | |
3032 | void bgp_evpn_es_vrf_deref(struct bgp_evpn_es_evi *es_evi) | |
3033 | { | |
3034 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
3035 | ||
3036 | if (!es_vrf) | |
3037 | return; | |
3038 | ||
3039 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3040 | zlog_debug("es-evi %s vni %u vrf %u de-ref", | |
3041 | es_evi->es->esi_str, es_evi->vpn->vni, | |
3042 | es_vrf->bgp_vrf->vrf_id); | |
3043 | ||
3044 | es_evi->es_vrf = NULL; | |
3045 | if (es_vrf->ref_cnt) | |
3046 | --es_vrf->ref_cnt; | |
3047 | ||
3048 | if (!es_vrf->ref_cnt) | |
3049 | bgp_evpn_es_vrf_delete(es_vrf); | |
3050 | } | |
3051 | ||
3052 | /* find or create and reference */ | |
3053 | void bgp_evpn_es_vrf_ref(struct bgp_evpn_es_evi *es_evi, struct bgp *bgp_vrf) | |
3054 | { | |
3055 | struct bgp_evpn_es *es = es_evi->es; | |
3056 | struct bgp_evpn_es_vrf *es_vrf = es_evi->es_vrf; | |
3057 | struct bgp *old_bgp_vrf = NULL; | |
3058 | ||
3059 | if (es_vrf) | |
3060 | old_bgp_vrf = es_vrf->bgp_vrf; | |
3061 | ||
3062 | if (old_bgp_vrf == bgp_vrf) | |
3063 | return; | |
3064 | ||
3065 | /* deref the old ES-VRF */ | |
3066 | bgp_evpn_es_vrf_deref(es_evi); | |
3067 | ||
3068 | if (!bgp_vrf) | |
3069 | return; | |
3070 | ||
3071 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3072 | zlog_debug("es-evi %s vni %u vrf %u ref", es_evi->es->esi_str, | |
3073 | es_evi->vpn->vni, bgp_vrf->vrf_id); | |
3074 | ||
3075 | /* find-create the new ES-VRF */ | |
3076 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
3077 | if (!es_vrf) | |
3078 | es_vrf = bgp_evpn_es_vrf_create(es, bgp_vrf); | |
c589d847 AK |
3079 | |
3080 | es_evi->es_vrf = es_vrf; | |
3081 | ++es_vrf->ref_cnt; | |
3082 | } | |
3083 | ||
3084 | /* When the L2-VNI is associated with a L3-VNI/VRF update all the | |
3085 | * associated ES-EVI entries | |
3086 | */ | |
3087 | void bgp_evpn_es_evi_vrf_deref(struct bgpevpn *vpn) | |
3088 | { | |
3089 | struct bgp_evpn_es_evi *es_evi; | |
3090 | ||
3091 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3092 | zlog_debug("es-vrf de-ref for vni %u", vpn->vni); | |
3093 | ||
3094 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
3095 | bgp_evpn_es_vrf_deref(es_evi); | |
3096 | } | |
3097 | void bgp_evpn_es_evi_vrf_ref(struct bgpevpn *vpn) | |
3098 | { | |
3099 | struct bgp_evpn_es_evi *es_evi; | |
3100 | ||
3101 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3102 | zlog_debug("es-vrf ref for vni %u", vpn->vni); | |
3103 | ||
3104 | RB_FOREACH (es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) | |
3105 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); | |
3106 | } | |
3107 | ||
58bff4d1 AK |
3108 | /* 1. If ES-VRF is not present install the host route with the exploded/flat |
3109 | * multi-path list. | |
3110 | * 2. If ES-VRF is present - | |
3111 | * - if L3NHG has not been activated for the ES-VRF (this could be because | |
3112 | * all the PEs attached to the VRF are down) do not install the route | |
3113 | * in zebra. | |
3114 | * - if L3NHG has been activated install the route via that L3NHG | |
3115 | */ | |
3116 | void bgp_evpn_es_vrf_use_nhg(struct bgp *bgp_vrf, esi_t *esi, bool *use_l3nhg, | |
3117 | bool *is_l3nhg_active, | |
3118 | struct bgp_evpn_es_vrf **es_vrf_p) | |
36dd4574 AK |
3119 | { |
3120 | struct bgp_evpn_es *es; | |
3121 | struct bgp_evpn_es_vrf *es_vrf; | |
3122 | ||
3123 | if (!bgp_mh_info->host_routes_use_l3nhg) | |
58bff4d1 | 3124 | return; |
36dd4574 AK |
3125 | |
3126 | es = bgp_evpn_es_find(esi); | |
3127 | if (!es) | |
58bff4d1 | 3128 | return; |
36dd4574 AK |
3129 | |
3130 | es_vrf = bgp_evpn_es_vrf_find(es, bgp_vrf); | |
3131 | if (!es_vrf) | |
58bff4d1 AK |
3132 | return; |
3133 | ||
3134 | *use_l3nhg = true; | |
3135 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
3136 | *is_l3nhg_active = true; | |
36dd4574 AK |
3137 | if (es_vrf_p) |
3138 | *es_vrf_p = es_vrf; | |
36dd4574 AK |
3139 | } |
3140 | ||
6348981a AK |
3141 | /* returns false if legacy-exploded mp needs to be used for route install */ |
3142 | bool bgp_evpn_path_es_use_nhg(struct bgp *bgp_vrf, struct bgp_path_info *pi, | |
3143 | uint32_t *nhg_p) | |
3144 | { | |
3145 | esi_t *esi; | |
36dd4574 | 3146 | struct bgp_evpn_es_vrf *es_vrf = NULL; |
6348981a AK |
3147 | struct bgp_path_info *parent_pi; |
3148 | struct bgp_node *rn; | |
3149 | struct prefix_evpn *evp; | |
3150 | struct bgp_path_info *mpinfo; | |
58bff4d1 AK |
3151 | bool use_l3nhg = false; |
3152 | bool is_l3nhg_active = false; | |
6348981a AK |
3153 | |
3154 | *nhg_p = 0; | |
3155 | ||
9f570418 AK |
3156 | /* we don't support NHG for routes leaked from another VRF yet */ |
3157 | if (pi->extra && pi->extra->bgp_orig) | |
3158 | return false; | |
3159 | ||
6348981a AK |
3160 | parent_pi = get_route_parent_evpn(pi); |
3161 | if (!parent_pi) | |
3162 | return false; | |
3163 | ||
3164 | rn = parent_pi->net; | |
3165 | if (!rn) | |
3166 | return false; | |
3167 | ||
3168 | evp = (struct prefix_evpn *)&rn->p; | |
3169 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3170 | return false; | |
3171 | ||
6348981a AK |
3172 | /* non-es path, use legacy-exploded multipath */ |
3173 | esi = bgp_evpn_attr_get_esi(parent_pi->attr); | |
3174 | if (!memcmp(esi, zero_esi, sizeof(*esi))) | |
3175 | return false; | |
3176 | ||
43853c9c SW |
3177 | /* we don't support NHG for d-vni yet */ |
3178 | if (bgp_evpn_mpath_has_dvni(bgp_vrf, pi)) | |
3179 | return false; | |
3180 | ||
58bff4d1 AK |
3181 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, esi, &use_l3nhg, &is_l3nhg_active, |
3182 | &es_vrf); | |
3183 | ||
36dd4574 | 3184 | /* L3NHG support is disabled, use legacy-exploded multipath */ |
58bff4d1 | 3185 | if (!use_l3nhg) |
36dd4574 AK |
3186 | return false; |
3187 | ||
3188 | /* if the NHG has not been installed we cannot install the route yet, | |
3189 | * return a 0-NHG to indicate that | |
6348981a | 3190 | */ |
58bff4d1 | 3191 | if (!is_l3nhg_active) |
6348981a AK |
3192 | return true; |
3193 | ||
3194 | /* this needs to be set the v6NHG if v6route */ | |
8bcb09a1 | 3195 | if (is_evpn_prefix_ipaddr_v6(evp)) |
6348981a AK |
3196 | *nhg_p = es_vrf->v6_nhg_id; |
3197 | else | |
3198 | *nhg_p = es_vrf->nhg_id; | |
3199 | ||
3200 | for (mpinfo = bgp_path_info_mpath_next(pi); mpinfo; | |
3201 | mpinfo = bgp_path_info_mpath_next(mpinfo)) { | |
36dd4574 | 3202 | /* if any of the paths have a different ESI we can't use |
6348981a AK |
3203 | * the NHG associated with the ES. fallback to legacy-exploded |
3204 | * multipath | |
3205 | */ | |
3206 | if (memcmp(esi, bgp_evpn_attr_get_esi(mpinfo->attr), | |
3207 | sizeof(*esi))) | |
3208 | return false; | |
3209 | } | |
3210 | ||
3211 | return true; | |
3212 | } | |
3213 | ||
229587fb AK |
3214 | static void bgp_evpn_es_vrf_show_entry(struct vty *vty, |
3215 | struct bgp_evpn_es_vrf *es_vrf, | |
3216 | json_object *json) | |
3217 | { | |
3218 | struct bgp_evpn_es *es = es_vrf->es; | |
3219 | struct bgp *bgp_vrf = es_vrf->bgp_vrf; | |
3220 | ||
3221 | if (json) { | |
3222 | json_object *json_types; | |
3223 | ||
3224 | json_object_string_add(json, "esi", es->esi_str); | |
dc9ca53f | 3225 | json_object_string_add(json, "vrf", bgp_vrf->name_pretty); |
229587fb AK |
3226 | |
3227 | if (es_vrf->flags & (BGP_EVPNES_VRF_NHG_ACTIVE)) { | |
3228 | json_types = json_object_new_array(); | |
3229 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
3230 | json_array_string_add(json_types, "active"); | |
3231 | json_object_object_add(json, "flags", json_types); | |
3232 | } | |
3233 | ||
3234 | json_object_int_add(json, "ipv4NHG", es_vrf->nhg_id); | |
3235 | json_object_int_add(json, "ipv6NHG", es_vrf->v6_nhg_id); | |
3236 | json_object_int_add(json, "refCount", es_vrf->ref_cnt); | |
3237 | } else { | |
3238 | char flags_str[4]; | |
3239 | ||
3240 | flags_str[0] = '\0'; | |
3241 | if (es_vrf->flags & BGP_EVPNES_VRF_NHG_ACTIVE) | |
3242 | strlcat(flags_str, "A", sizeof(flags_str)); | |
3243 | ||
3244 | vty_out(vty, "%-30s %-15s %-5s %-8u %-8u %u\n", es->esi_str, | |
dc9ca53f | 3245 | bgp_vrf->name_pretty, flags_str, es_vrf->nhg_id, |
229587fb AK |
3246 | es_vrf->v6_nhg_id, es_vrf->ref_cnt); |
3247 | } | |
3248 | } | |
3249 | ||
3250 | static void bgp_evpn_es_vrf_show_es(struct vty *vty, json_object *json_array, | |
3251 | struct bgp_evpn_es *es) | |
3252 | { | |
3253 | json_object *json = NULL; | |
3254 | struct listnode *es_vrf_node; | |
3255 | struct bgp_evpn_es_vrf *es_vrf; | |
3256 | ||
3257 | for (ALL_LIST_ELEMENTS_RO(es->es_vrf_list, es_vrf_node, es_vrf)) { | |
3258 | /* create a separate json object for each ES-VRF */ | |
3259 | if (json_array) | |
3260 | json = json_object_new_object(); | |
3261 | bgp_evpn_es_vrf_show_entry(vty, es_vrf, json); | |
3262 | /* add ES-VRF to the json array */ | |
3263 | if (json_array) | |
3264 | json_object_array_add(json_array, json); | |
3265 | } | |
3266 | } | |
3267 | ||
3268 | /* Display all ES VRFs */ | |
3269 | void bgp_evpn_es_vrf_show(struct vty *vty, bool uj, struct bgp_evpn_es *es) | |
3270 | { | |
3271 | json_object *json_array = NULL; | |
3272 | ||
3273 | if (uj) { | |
3274 | /* create an array of ESs */ | |
3275 | json_array = json_object_new_array(); | |
3276 | } else { | |
3277 | vty_out(vty, "ES-VRF Flags: A Active\n"); | |
3278 | vty_out(vty, "%-30s %-15s %-5s %-8s %-8s %s\n", "ESI", "VRF", | |
3279 | "Flags", "IPv4-NHG", "IPv6-NHG", "Ref"); | |
3280 | } | |
3281 | ||
3282 | if (es) { | |
3283 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3284 | } else { | |
3285 | RB_FOREACH (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) | |
3286 | bgp_evpn_es_vrf_show_es(vty, json_array, es); | |
3287 | } | |
3288 | ||
3289 | /* print the array of json-ESs */ | |
c48349e3 | 3290 | if (uj) |
75eeda93 | 3291 | vty_json(vty, json_array); |
229587fb AK |
3292 | } |
3293 | ||
3294 | /* Display specific ES VRF */ | |
3295 | void bgp_evpn_es_vrf_show_esi(struct vty *vty, esi_t *esi, bool uj) | |
3296 | { | |
3297 | struct bgp_evpn_es *es; | |
3298 | ||
3299 | es = bgp_evpn_es_find(esi); | |
3300 | if (es) { | |
3301 | bgp_evpn_es_vrf_show(vty, uj, es); | |
3302 | } else { | |
3303 | if (!uj) | |
3304 | vty_out(vty, "ESI not found\n"); | |
3305 | } | |
3306 | } | |
3307 | ||
c44ab6f1 AK |
3308 | /*****************************************************************************/ |
3309 | /* Ethernet Segment to EVI association - | |
3310 | * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI | |
3311 | * (bgpevpn->es_evi_rb_tree). | |
3312 | * 2. Each local ES-EVI entry is rxed from zebra and then used by BGP to | |
3313 | * advertises an EAD-EVI (Type-1 EVPN) route | |
3314 | * 3. The remote ES-EVI is created when a bgp_evpn_es_evi_vtep references | |
3315 | * it. | |
3316 | */ | |
3317 | ||
3318 | /* A list of remote VTEPs is maintained for each ES-EVI. This list includes - | |
3319 | * 1. VTEPs for which we have imported the EAD-per-ES Type1 route | |
3320 | * 2. VTEPs for which we have imported the EAD-per-EVI Type1 route | |
3321 | * VTEPs for which both routes have been rxed are activated. Activation | |
3322 | * creates a NHG in the parent ES. | |
3323 | */ | |
3324 | static int bgp_evpn_es_evi_vtep_cmp(void *p1, void *p2) | |
3325 | { | |
3326 | const struct bgp_evpn_es_evi_vtep *evi_vtep1 = p1; | |
3327 | const struct bgp_evpn_es_evi_vtep *evi_vtep2 = p2; | |
3328 | ||
3329 | return evi_vtep1->vtep_ip.s_addr - evi_vtep2->vtep_ip.s_addr; | |
3330 | } | |
3331 | ||
3332 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_new( | |
3333 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3334 | { | |
3335 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3336 | ||
3337 | evi_vtep = XCALLOC(MTYPE_BGP_EVPN_ES_EVI_VTEP, sizeof(*evi_vtep)); | |
3338 | ||
3339 | evi_vtep->es_evi = es_evi; | |
3340 | evi_vtep->vtep_ip.s_addr = vtep_ip.s_addr; | |
3341 | listnode_init(&evi_vtep->es_evi_listnode, evi_vtep); | |
3342 | listnode_add_sort(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3343 | ||
3344 | return evi_vtep; | |
3345 | } | |
3346 | ||
3347 | static void bgp_evpn_es_evi_vtep_free(struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3348 | { | |
3349 | struct bgp_evpn_es_evi *es_evi = evi_vtep->es_evi; | |
3350 | ||
3351 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD)) | |
3352 | /* as long as there is some reference we can't free it */ | |
3353 | return; | |
3354 | ||
3355 | list_delete_node(es_evi->es_evi_vtep_list, &evi_vtep->es_evi_listnode); | |
3356 | XFREE(MTYPE_BGP_EVPN_ES_EVI_VTEP, evi_vtep); | |
3357 | } | |
3358 | ||
3359 | /* check if VTEP is already part of the list */ | |
3360 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_vtep_find( | |
3361 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip) | |
3362 | { | |
3363 | struct listnode *node = NULL; | |
3364 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3365 | ||
3366 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3367 | if (evi_vtep->vtep_ip.s_addr == vtep_ip.s_addr) | |
3368 | return evi_vtep; | |
3369 | } | |
3370 | return NULL; | |
3371 | } | |
3372 | ||
3373 | /* A VTEP can be added as "active" attach to an ES if EAD-per-ES and | |
3374 | * EAD-per-EVI routes are rxed from it. | |
3375 | */ | |
3376 | static void bgp_evpn_es_evi_vtep_re_eval_active(struct bgp *bgp, | |
3377 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3378 | { | |
3379 | bool old_active; | |
3380 | bool new_active; | |
fe8293c3 | 3381 | uint32_t ead_activity_flags; |
c44ab6f1 | 3382 | |
d4980edf | 3383 | old_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 | 3384 | |
fe8293c3 AK |
3385 | if (bgp_mh_info->ead_evi_rx) |
3386 | /* Both EAD-per-ES and EAD-per-EVI routes must be rxed from a PE | |
3387 | * before it can be activated. | |
3388 | */ | |
3389 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD; | |
3390 | else | |
3391 | /* EAD-per-ES is sufficent to activate the PE */ | |
3392 | ead_activity_flags = BGP_EVPN_EVI_VTEP_EAD_PER_ES; | |
3393 | ||
3394 | if ((evi_vtep->flags & ead_activity_flags) == ead_activity_flags) | |
c44ab6f1 AK |
3395 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
3396 | else | |
3397 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); | |
3398 | ||
d4980edf | 3399 | new_active = CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE); |
c44ab6f1 AK |
3400 | |
3401 | if (old_active == new_active) | |
3402 | return; | |
3403 | ||
3404 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3405 | zlog_debug("es %s evi %u vtep %pI4 %s", |
3406 | evi_vtep->es_evi->es->esi_str, | |
3407 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3408 | new_active ? "active" : "inactive"); | |
c44ab6f1 AK |
3409 | |
3410 | /* add VTEP to parent es */ | |
bce8bf58 | 3411 | if (new_active) |
3412 | evi_vtep->es_vtep = bgp_evpn_es_vtep_add( | |
3413 | bgp, evi_vtep->es_evi->es, evi_vtep->vtep_ip, | |
3414 | false /*esr*/, 0, 0); | |
3415 | else { | |
c44ab6f1 AK |
3416 | if (evi_vtep->es_vtep) { |
3417 | bgp_evpn_es_vtep_do_del(bgp, evi_vtep->es_vtep, | |
3418 | false /*esr*/); | |
3419 | evi_vtep->es_vtep = NULL; | |
3420 | } | |
3421 | } | |
3422 | /* queue up the parent es for background consistency checks */ | |
3423 | bgp_evpn_es_cons_checks_pend_add(evi_vtep->es_evi->es); | |
3424 | } | |
3425 | ||
3426 | static void bgp_evpn_es_evi_vtep_add(struct bgp *bgp, | |
3427 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3428 | bool ead_es) | |
3429 | { | |
3430 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3431 | ||
3432 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3433 | ||
3434 | if (!evi_vtep) | |
3435 | evi_vtep = bgp_evpn_es_evi_vtep_new(es_evi, vtep_ip); | |
3436 | ||
3437 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3438 | zlog_debug("add es %s evi %u vtep %pI4 %s", |
3439 | evi_vtep->es_evi->es->esi_str, | |
3440 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3441 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3442 | |
3443 | if (ead_es) | |
3444 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3445 | else | |
3446 | SET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3447 | ||
3448 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3449 | } | |
3450 | ||
3451 | static void bgp_evpn_es_evi_vtep_del(struct bgp *bgp, | |
3452 | struct bgp_evpn_es_evi *es_evi, struct in_addr vtep_ip, | |
3453 | bool ead_es) | |
3454 | { | |
3455 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3456 | ||
3457 | evi_vtep = bgp_evpn_es_evi_vtep_find(es_evi, vtep_ip); | |
3458 | if (!evi_vtep) | |
3459 | return; | |
3460 | ||
3461 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3462 | zlog_debug("del es %s evi %u vtep %pI4 %s", |
3463 | evi_vtep->es_evi->es->esi_str, | |
3464 | evi_vtep->es_evi->vpn->vni, &evi_vtep->vtep_ip, | |
3465 | ead_es ? "ead_es" : "ead_evi"); | |
c44ab6f1 AK |
3466 | |
3467 | if (ead_es) | |
3468 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_ES); | |
3469 | else | |
3470 | UNSET_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3471 | ||
3472 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3473 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3474 | } | |
3475 | ||
3476 | /* compare ES-IDs for the ES-EVI RB tree maintained per-VNI */ | |
3477 | static int bgp_es_evi_rb_cmp(const struct bgp_evpn_es_evi *es_evi1, | |
3478 | const struct bgp_evpn_es_evi *es_evi2) | |
3479 | { | |
3480 | return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); | |
3481 | } | |
3482 | RB_GENERATE(bgp_es_evi_rb_head, bgp_evpn_es_evi, rb_node, bgp_es_evi_rb_cmp); | |
3483 | ||
3484 | /* find the ES-EVI in the per-L2-VNI RB tree */ | |
3485 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_find(struct bgp_evpn_es *es, | |
3486 | struct bgpevpn *vpn) | |
3487 | { | |
3488 | struct bgp_evpn_es_evi es_evi; | |
3489 | ||
3490 | es_evi.es = es; | |
3491 | ||
3492 | return RB_FIND(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, &es_evi); | |
3493 | } | |
3494 | ||
3495 | /* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES | |
3496 | * tables. | |
3497 | */ | |
3498 | static struct bgp_evpn_es_evi *bgp_evpn_es_evi_new(struct bgp_evpn_es *es, | |
3499 | struct bgpevpn *vpn) | |
3500 | { | |
3501 | struct bgp_evpn_es_evi *es_evi; | |
3502 | ||
3503 | es_evi = XCALLOC(MTYPE_BGP_EVPN_ES_EVI, sizeof(*es_evi)); | |
3504 | ||
3505 | es_evi->es = es; | |
3506 | es_evi->vpn = vpn; | |
3507 | ||
3508 | /* Initialise the VTEP list */ | |
3509 | es_evi->es_evi_vtep_list = list_new(); | |
3510 | listset_app_node_mem(es_evi->es_evi_vtep_list); | |
3511 | es_evi->es_evi_vtep_list->cmp = bgp_evpn_es_evi_vtep_cmp; | |
3512 | ||
3513 | /* insert into the VNI-ESI rb tree */ | |
92809558 | 3514 | RB_INSERT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); |
c44ab6f1 AK |
3515 | |
3516 | /* add to the ES's VNI list */ | |
3517 | listnode_init(&es_evi->es_listnode, es_evi); | |
3518 | listnode_add(es->es_evi_list, &es_evi->es_listnode); | |
3519 | ||
c589d847 AK |
3520 | bgp_evpn_es_vrf_ref(es_evi, vpn->bgp_vrf); |
3521 | ||
c44ab6f1 AK |
3522 | return es_evi; |
3523 | } | |
3524 | ||
3525 | /* remove the ES-EVI from the per-L2-VNI and per-ES tables and free | |
3526 | * up the memory. | |
3527 | */ | |
333ad64b AK |
3528 | static struct bgp_evpn_es_evi * |
3529 | bgp_evpn_es_evi_free(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3530 | { |
3531 | struct bgp_evpn_es *es = es_evi->es; | |
3532 | struct bgpevpn *vpn = es_evi->vpn; | |
3533 | ||
3534 | /* cannot free the element as long as there is a local or remote | |
3535 | * reference | |
3536 | */ | |
3537 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | BGP_EVPNES_EVI_REMOTE)) | |
333ad64b | 3538 | return es_evi; |
7b0db0e4 | 3539 | bgp_evpn_es_frag_evi_del(es_evi, false); |
c589d847 AK |
3540 | bgp_evpn_es_vrf_deref(es_evi); |
3541 | ||
c44ab6f1 AK |
3542 | /* remove from the ES's VNI list */ |
3543 | list_delete_node(es->es_evi_list, &es_evi->es_listnode); | |
3544 | ||
3545 | /* remove from the VNI-ESI rb tree */ | |
3546 | RB_REMOVE(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree, es_evi); | |
3547 | ||
3548 | /* free the VTEP list */ | |
3549 | list_delete(&es_evi->es_evi_vtep_list); | |
3550 | ||
3551 | /* remove from the VNI-ESI rb tree */ | |
3552 | XFREE(MTYPE_BGP_EVPN_ES_EVI, es_evi); | |
333ad64b AK |
3553 | |
3554 | return NULL; | |
c44ab6f1 AK |
3555 | } |
3556 | ||
3557 | /* init local info associated with the ES-EVI */ | |
3558 | static void bgp_evpn_es_evi_local_info_set(struct bgp_evpn_es_evi *es_evi) | |
3559 | { | |
3560 | struct bgpevpn *vpn = es_evi->vpn; | |
3561 | ||
3562 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3563 | return; | |
3564 | ||
3565 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); | |
3566 | listnode_init(&es_evi->l2vni_listnode, es_evi); | |
3567 | listnode_add(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
7b0db0e4 | 3568 | bgp_evpn_es_frag_evi_add(es_evi); |
c44ab6f1 AK |
3569 | } |
3570 | ||
3571 | /* clear any local info associated with the ES-EVI */ | |
333ad64b AK |
3572 | static struct bgp_evpn_es_evi * |
3573 | bgp_evpn_es_evi_local_info_clear(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3574 | { |
3575 | struct bgpevpn *vpn = es_evi->vpn; | |
3576 | ||
c44ab6f1 AK |
3577 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL); |
3578 | list_delete_node(vpn->local_es_evi_list, &es_evi->l2vni_listnode); | |
3579 | ||
333ad64b | 3580 | return bgp_evpn_es_evi_free(es_evi); |
c44ab6f1 AK |
3581 | } |
3582 | ||
3583 | /* eval remote info associated with the ES */ | |
3584 | static void bgp_evpn_es_evi_remote_info_re_eval(struct bgp_evpn_es_evi *es_evi) | |
3585 | { | |
3586 | struct bgp_evpn_es *es = es_evi->es; | |
3587 | ||
3588 | /* if there are remote VTEPs the ES-EVI is classified as "remote" */ | |
3589 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3590 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3591 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3592 | ++es->remote_es_evi_cnt; | |
3593 | /* set remote on the parent es */ | |
3594 | bgp_evpn_es_remote_info_re_eval(es); | |
3595 | } | |
3596 | } else { | |
3597 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) { | |
3598 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE); | |
3599 | if (es->remote_es_evi_cnt) | |
3600 | --es->remote_es_evi_cnt; | |
3601 | bgp_evpn_es_evi_free(es_evi); | |
3602 | /* check if "remote" can be cleared from the | |
3603 | * parent es. | |
3604 | */ | |
3605 | bgp_evpn_es_remote_info_re_eval(es); | |
3606 | } | |
3607 | } | |
3608 | } | |
3609 | ||
333ad64b AK |
3610 | static struct bgp_evpn_es_evi * |
3611 | bgp_evpn_local_es_evi_do_del(struct bgp_evpn_es_evi *es_evi) | |
c44ab6f1 AK |
3612 | { |
3613 | struct prefix_evpn p; | |
3614 | struct bgp_evpn_es *es = es_evi->es; | |
3615 | struct bgp *bgp; | |
3616 | ||
3617 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
333ad64b | 3618 | return es_evi; |
c44ab6f1 AK |
3619 | |
3620 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3621 | zlog_debug("del local es %s evi %u", | |
3622 | es_evi->es->esi_str, | |
3623 | es_evi->vpn->vni); | |
3624 | ||
3625 | bgp = bgp_get_evpn(); | |
3626 | ||
7b0db0e4 AK |
3627 | /* remove the es_evi from the es_frag before sending the update */ |
3628 | bgp_evpn_es_frag_evi_del(es_evi, true); | |
c44ab6f1 AK |
3629 | if (bgp) { |
3630 | /* update EAD-ES with new list of VNIs */ | |
7b0db0e4 AK |
3631 | if (bgp_evpn_local_es_is_active(es)) |
3632 | bgp_evpn_ead_es_route_update(bgp, es); | |
c44ab6f1 AK |
3633 | |
3634 | /* withdraw and delete EAD-EVI */ | |
3635 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { | |
3636 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, | |
3637 | &es->esi, es->originator_ip); | |
7b0db0e4 AK |
3638 | if (bgp_evpn_ead_evi_route_delete(bgp, es, es_evi->vpn, |
3639 | &p)) | |
c44ab6f1 AK |
3640 | flog_err(EC_BGP_EVPN_ROUTE_DELETE, |
3641 | "%u: EAD-EVI route deletion failure for ESI %s VNI %u", | |
3642 | bgp->vrf_id, es->esi_str, | |
3643 | es_evi->vpn->vni); | |
3644 | } | |
3645 | } | |
3646 | ||
333ad64b | 3647 | return bgp_evpn_es_evi_local_info_clear(es_evi); |
c44ab6f1 AK |
3648 | } |
3649 | ||
3650 | int bgp_evpn_local_es_evi_del(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3651 | { | |
3652 | struct bgpevpn *vpn; | |
3653 | struct bgp_evpn_es *es; | |
3654 | struct bgp_evpn_es_evi *es_evi; | |
3655 | char buf[ESI_STR_LEN]; | |
3656 | ||
3657 | es = bgp_evpn_es_find(esi); | |
3658 | if (!es) { | |
3659 | flog_err( | |
3660 | EC_BGP_ES_CREATE, | |
3661 | "%u: Failed to deref VNI %d from ESI %s; ES not present", | |
3662 | bgp->vrf_id, vni, | |
3663 | esi_to_str(esi, buf, sizeof(buf))); | |
3664 | return -1; | |
3665 | } | |
3666 | ||
3667 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3668 | if (!vpn) { | |
3669 | flog_err( | |
3670 | EC_BGP_ES_CREATE, | |
3671 | "%u: Failed to deref VNI %d from ESI %s; VNI not present", | |
3672 | bgp->vrf_id, vni, es->esi_str); | |
3673 | return -1; | |
3674 | } | |
3675 | ||
3676 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3677 | if (!es_evi) { | |
3678 | flog_err( | |
3679 | EC_BGP_ES_CREATE, | |
3680 | "%u: Failed to deref VNI %d from ESI %s; ES-VNI not present", | |
3681 | bgp->vrf_id, vni, es->esi_str); | |
3682 | return -1; | |
3683 | } | |
3684 | ||
3685 | bgp_evpn_local_es_evi_do_del(es_evi); | |
3686 | return 0; | |
3687 | } | |
3688 | ||
3689 | /* Create ES-EVI and advertise the corresponding EAD routes */ | |
3690 | int bgp_evpn_local_es_evi_add(struct bgp *bgp, esi_t *esi, vni_t vni) | |
3691 | { | |
3692 | struct bgpevpn *vpn; | |
3693 | struct prefix_evpn p; | |
3694 | struct bgp_evpn_es *es; | |
3695 | struct bgp_evpn_es_evi *es_evi; | |
3696 | char buf[ESI_STR_LEN]; | |
3697 | ||
3698 | es = bgp_evpn_es_find(esi); | |
3699 | if (!es) { | |
3700 | flog_err( | |
3701 | EC_BGP_ES_CREATE, | |
3702 | "%u: Failed to associate VNI %d with ESI %s; ES not present", | |
3703 | bgp->vrf_id, vni, | |
3704 | esi_to_str(esi, buf, sizeof(buf))); | |
3705 | return -1; | |
3706 | } | |
3707 | ||
3708 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
3709 | if (!vpn) { | |
3710 | flog_err( | |
3711 | EC_BGP_ES_CREATE, | |
3712 | "%u: Failed to associate VNI %d with ESI %s; VNI not present", | |
3713 | bgp->vrf_id, vni, es->esi_str); | |
3714 | return -1; | |
3715 | } | |
3716 | ||
3717 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3718 | zlog_debug("add local es %s evi %u", | |
3719 | es->esi_str, vni); | |
3720 | ||
3721 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
3722 | ||
3723 | if (es_evi) { | |
3724 | if (CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_LOCAL)) | |
3725 | /* dup */ | |
3726 | return 0; | |
49540e50 | 3727 | } else |
c44ab6f1 | 3728 | es_evi = bgp_evpn_es_evi_new(es, vpn); |
c44ab6f1 AK |
3729 | |
3730 | bgp_evpn_es_evi_local_info_set(es_evi); | |
3731 | ||
3732 | /* generate an EAD-EVI for this new VNI */ | |
c44ab6f1 | 3733 | if (CHECK_FLAG(es->flags, BGP_EVPNES_ADV_EVI)) { |
fe8293c3 AK |
3734 | build_evpn_type1_prefix(&p, BGP_EVPN_AD_EVI_ETH_TAG, &es->esi, |
3735 | es->originator_ip); | |
7b0db0e4 | 3736 | bgp_evpn_ead_evi_route_update(bgp, es, vpn, &p); |
c44ab6f1 AK |
3737 | } |
3738 | ||
3739 | /* update EAD-ES */ | |
7b0db0e4 AK |
3740 | if (bgp_evpn_local_es_is_active(es)) |
3741 | bgp_evpn_ead_es_route_update(bgp, es); | |
c44ab6f1 AK |
3742 | |
3743 | return 0; | |
3744 | } | |
3745 | ||
3746 | /* Add remote ES-EVI entry. This is actually the remote VTEP add and the | |
3747 | * ES-EVI is implicity created on first VTEP's reference. | |
3748 | */ | |
3749 | int bgp_evpn_remote_es_evi_add(struct bgp *bgp, struct bgpevpn *vpn, | |
3750 | const struct prefix_evpn *p) | |
3751 | { | |
3752 | char buf[ESI_STR_LEN]; | |
3753 | struct bgp_evpn_es *es; | |
3754 | struct bgp_evpn_es_evi *es_evi; | |
3755 | bool ead_es; | |
3756 | const esi_t *esi = &p->prefix.ead_addr.esi; | |
3757 | ||
3758 | if (!vpn) | |
3759 | /* local EAD-ES need not be sent back to zebra */ | |
3760 | return 0; | |
3761 | ||
3762 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3763 | zlog_debug("add remote %s es %s evi %u vtep %pI4", |
3764 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3765 | esi_to_str(esi, buf, sizeof(buf)), vpn->vni, | |
3766 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3767 | |
3768 | es = bgp_evpn_es_find(esi); | |
573eeb2b | 3769 | if (!es) |
c44ab6f1 | 3770 | es = bgp_evpn_es_new(bgp, esi); |
c44ab6f1 AK |
3771 | |
3772 | es_evi = bgp_evpn_es_evi_find(es, vpn); | |
49540e50 | 3773 | if (!es_evi) |
c44ab6f1 | 3774 | es_evi = bgp_evpn_es_evi_new(es, vpn); |
c44ab6f1 AK |
3775 | |
3776 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3777 | bgp_evpn_es_evi_vtep_add(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3778 | ead_es); | |
3779 | ||
3780 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3781 | return 0; | |
3782 | } | |
3783 | ||
3784 | /* A remote VTEP has withdrawn. The es-evi-vtep will be deleted and the | |
3785 | * parent es-evi freed up implicitly in last VTEP's deref. | |
3786 | */ | |
3787 | int bgp_evpn_remote_es_evi_del(struct bgp *bgp, struct bgpevpn *vpn, | |
3788 | const struct prefix_evpn *p) | |
3789 | { | |
3790 | char buf[ESI_STR_LEN]; | |
3791 | struct bgp_evpn_es *es; | |
3792 | struct bgp_evpn_es_evi *es_evi; | |
3793 | bool ead_es; | |
3794 | ||
3795 | if (!vpn) | |
3796 | /* local EAD-ES need not be sent back to zebra */ | |
3797 | return 0; | |
3798 | ||
3799 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
23d0a753 DA |
3800 | zlog_debug( |
3801 | "del remote %s es %s evi %u vtep %pI4", | |
3802 | p->prefix.ead_addr.eth_tag ? "ead-es" : "ead-evi", | |
3803 | esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), | |
3804 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 AK |
3805 | |
3806 | es = bgp_evpn_es_find(&p->prefix.ead_addr.esi); | |
2eef4f20 AK |
3807 | if (!es) { |
3808 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
671ec576 | 3809 | zlog_debug( |
3810 | "del remote %s es %s evi %u vtep %pI4, NO es", | |
3811 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3812 | : "ead-evi", | |
3813 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3814 | sizeof(buf)), | |
3815 | vpn->vni, &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3816 | return 0; |
2eef4f20 | 3817 | } |
c44ab6f1 | 3818 | es_evi = bgp_evpn_es_evi_find(es, vpn); |
2eef4f20 AK |
3819 | if (!es_evi) { |
3820 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
3821 | zlog_debug( | |
3822 | "del remote %s es %s evi %u vtep %pI4, NO es-evi", | |
3823 | p->prefix.ead_addr.eth_tag ? "ead-es" | |
3824 | : "ead-evi", | |
3825 | esi_to_str(&p->prefix.ead_addr.esi, buf, | |
3826 | sizeof(buf)), | |
3827 | vpn->vni, | |
3828 | &p->prefix.ead_addr.ip.ipaddr_v4); | |
c44ab6f1 | 3829 | return 0; |
2eef4f20 | 3830 | } |
c44ab6f1 AK |
3831 | |
3832 | ead_es = !!p->prefix.ead_addr.eth_tag; | |
3833 | bgp_evpn_es_evi_vtep_del(bgp, es_evi, p->prefix.ead_addr.ip.ipaddr_v4, | |
3834 | ead_es); | |
3835 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3836 | return 0; | |
3837 | } | |
3838 | ||
333ad64b AK |
3839 | /* If a VNI is being deleted we need to force del all remote VTEPs */ |
3840 | static void bgp_evpn_remote_es_evi_flush(struct bgp_evpn_es_evi *es_evi) | |
3841 | { | |
3842 | struct listnode *node = NULL; | |
3843 | struct listnode *nnode = NULL; | |
3844 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3845 | struct bgp *bgp; | |
3846 | ||
3847 | bgp = bgp_get_evpn(); | |
3848 | if (!bgp) | |
3849 | return; | |
3850 | ||
3851 | /* delete all VTEPs */ | |
3852 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, node, nnode, | |
3853 | evi_vtep)) { | |
3854 | evi_vtep->flags &= ~(BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3855 | | BGP_EVPN_EVI_VTEP_EAD_PER_EVI); | |
3856 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, evi_vtep); | |
3857 | bgp_evpn_es_evi_vtep_free(evi_vtep); | |
3858 | } | |
3859 | /* delete the EVI */ | |
3860 | bgp_evpn_es_evi_remote_info_re_eval(es_evi); | |
3861 | } | |
3862 | ||
c44ab6f1 AK |
3863 | /* Initialize the ES tables maintained per-L2_VNI */ |
3864 | void bgp_evpn_vni_es_init(struct bgpevpn *vpn) | |
3865 | { | |
3866 | /* Initialize the ES-EVI RB tree */ | |
3867 | RB_INIT(bgp_es_evi_rb_head, &vpn->es_evi_rb_tree); | |
3868 | ||
3869 | /* Initialize the local list maintained for quick walks by type */ | |
3870 | vpn->local_es_evi_list = list_new(); | |
3871 | listset_app_node_mem(vpn->local_es_evi_list); | |
3872 | } | |
3873 | ||
3874 | /* Cleanup the ES info maintained per-L2_VNI */ | |
3875 | void bgp_evpn_vni_es_cleanup(struct bgpevpn *vpn) | |
3876 | { | |
3877 | struct bgp_evpn_es_evi *es_evi; | |
3878 | struct bgp_evpn_es_evi *es_evi_next; | |
3879 | ||
3880 | RB_FOREACH_SAFE(es_evi, bgp_es_evi_rb_head, | |
3881 | &vpn->es_evi_rb_tree, es_evi_next) { | |
333ad64b AK |
3882 | es_evi = bgp_evpn_local_es_evi_do_del(es_evi); |
3883 | if (es_evi) | |
3884 | bgp_evpn_remote_es_evi_flush(es_evi); | |
c44ab6f1 AK |
3885 | } |
3886 | ||
3887 | list_delete(&vpn->local_es_evi_list); | |
3888 | } | |
3889 | ||
3890 | static char *bgp_evpn_es_evi_vteps_str(char *vtep_str, | |
9e0c2fd1 AK |
3891 | struct bgp_evpn_es_evi *es_evi, |
3892 | uint8_t vtep_str_size) | |
c44ab6f1 AK |
3893 | { |
3894 | char vtep_flag_str[BGP_EVPN_FLAG_STR_SZ]; | |
3895 | struct listnode *node; | |
3896 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3897 | bool first = true; | |
07380148 | 3898 | char ip_buf[INET_ADDRSTRLEN]; |
c44ab6f1 AK |
3899 | |
3900 | vtep_str[0] = '\0'; | |
3901 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
3902 | vtep_flag_str[0] = '\0'; | |
3903 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
9e0c2fd1 | 3904 | strlcat(vtep_flag_str, "E", sizeof(vtep_flag_str)); |
c44ab6f1 | 3905 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) |
9e0c2fd1 | 3906 | strlcat(vtep_flag_str, "V", sizeof(vtep_flag_str)); |
c44ab6f1 | 3907 | |
9e0c2fd1 AK |
3908 | if (!strnlen(vtep_flag_str, sizeof(vtep_flag_str))) |
3909 | strlcpy(vtep_flag_str, "-", sizeof(vtep_flag_str)); | |
3910 | if (first) | |
c44ab6f1 | 3911 | first = false; |
9e0c2fd1 AK |
3912 | else |
3913 | strlcat(vtep_str, ",", vtep_str_size); | |
23d0a753 | 3914 | strlcat(vtep_str, |
ec779825 AK |
3915 | inet_ntop(AF_INET, &evi_vtep->vtep_ip, ip_buf, |
3916 | sizeof(ip_buf)), | |
23d0a753 | 3917 | vtep_str_size); |
9e0c2fd1 AK |
3918 | strlcat(vtep_str, "(", vtep_str_size); |
3919 | strlcat(vtep_str, vtep_flag_str, vtep_str_size); | |
3920 | strlcat(vtep_str, ")", vtep_str_size); | |
c44ab6f1 AK |
3921 | } |
3922 | ||
3923 | return vtep_str; | |
3924 | } | |
3925 | ||
3926 | static void bgp_evpn_es_evi_json_vtep_fill(json_object *json_vteps, | |
3927 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
3928 | { | |
3929 | json_object *json_vtep_entry; | |
3930 | json_object *json_flags; | |
3931 | ||
3932 | json_vtep_entry = json_object_new_object(); | |
3933 | ||
c949c771 DA |
3934 | json_object_string_addf(json_vtep_entry, "vtep_ip", "%pI4", |
3935 | &evi_vtep->vtep_ip); | |
c44ab6f1 AK |
3936 | if (evi_vtep->flags & (BGP_EVPN_EVI_VTEP_EAD_PER_ES | |
3937 | BGP_EVPN_EVI_VTEP_EAD_PER_EVI)) { | |
3938 | json_flags = json_object_new_array(); | |
3939 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_ES) | |
3940 | json_array_string_add(json_flags, "ead-per-es"); | |
3941 | if (evi_vtep->flags & BGP_EVPN_EVI_VTEP_EAD_PER_EVI) | |
b37ff319 | 3942 | json_array_string_add(json_flags, "ead-per-evi"); |
c44ab6f1 AK |
3943 | json_object_object_add(json_vtep_entry, |
3944 | "flags", json_flags); | |
3945 | } | |
3946 | ||
3947 | json_object_array_add(json_vteps, | |
3948 | json_vtep_entry); | |
3949 | } | |
3950 | ||
3951 | static void bgp_evpn_es_evi_show_entry(struct vty *vty, | |
3952 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
3953 | { | |
3954 | struct listnode *node; | |
3955 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
3956 | ||
3957 | if (json) { | |
3958 | json_object *json_vteps; | |
3959 | json_object *json_types; | |
3960 | ||
3961 | json_object_string_add(json, "esi", es_evi->es->esi_str); | |
f7b60a3a PG |
3962 | if (es_evi->vpn) |
3963 | json_object_int_add(json, "vni", es_evi->vpn->vni); | |
c44ab6f1 AK |
3964 | |
3965 | if (es_evi->flags & (BGP_EVPNES_EVI_LOCAL | | |
3966 | BGP_EVPNES_EVI_REMOTE)) { | |
3967 | json_types = json_object_new_array(); | |
3968 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
3969 | json_array_string_add(json_types, "local"); | |
3970 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) | |
3971 | json_array_string_add(json_types, "remote"); | |
3972 | json_object_object_add(json, "type", json_types); | |
3973 | } | |
3974 | ||
3975 | if (listcount(es_evi->es_evi_vtep_list)) { | |
3976 | json_vteps = json_object_new_array(); | |
3977 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, | |
3978 | node, evi_vtep)) { | |
3979 | bgp_evpn_es_evi_json_vtep_fill(json_vteps, | |
3980 | evi_vtep); | |
3981 | } | |
3982 | json_object_object_add(json, "vteps", json_vteps); | |
3983 | } | |
3984 | } else { | |
3985 | char type_str[4]; | |
3986 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
3987 | ||
3988 | type_str[0] = '\0'; | |
3989 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 3990 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 3991 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 3992 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 3993 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) |
9e0c2fd1 | 3994 | strlcat(type_str, "I", sizeof(type_str)); |
c44ab6f1 | 3995 | |
9e0c2fd1 | 3996 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 AK |
3997 | |
3998 | vty_out(vty, "%-8d %-30s %-5s %s\n", | |
3999 | es_evi->vpn->vni, es_evi->es->esi_str, | |
4000 | type_str, vtep_str); | |
4001 | } | |
4002 | } | |
4003 | ||
4004 | static void bgp_evpn_es_evi_show_entry_detail(struct vty *vty, | |
4005 | struct bgp_evpn_es_evi *es_evi, json_object *json) | |
4006 | { | |
4a8cd6ad PG |
4007 | enum asnotation_mode mode; |
4008 | ||
4009 | mode = bgp_get_asnotation(es_evi->vpn->bgp_vrf); | |
4010 | ||
c44ab6f1 AK |
4011 | if (json) { |
4012 | json_object *json_flags; | |
4013 | ||
4014 | /* Add the "brief" info first */ | |
4015 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
7b0db0e4 | 4016 | if (es_evi->es_frag) |
4a8cd6ad PG |
4017 | json_object_string_addf(json, "esFragmentRd", |
4018 | BGP_RD_AS_FORMAT(mode), | |
c4f64ea9 | 4019 | &es_evi->es_frag->prd); |
c44ab6f1 AK |
4020 | if (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) { |
4021 | json_flags = json_object_new_array(); | |
4022 | json_array_string_add(json_flags, "es-vtep-mismatch"); | |
4023 | json_object_object_add(json, "flags", json_flags); | |
4024 | } | |
4025 | } else { | |
4026 | char vtep_str[ES_VTEP_LIST_STR_SZ + BGP_EVPN_VTEPS_FLAG_STR_SZ]; | |
4027 | char type_str[4]; | |
4028 | ||
4029 | type_str[0] = '\0'; | |
4030 | if (es_evi->flags & BGP_EVPNES_EVI_LOCAL) | |
9e0c2fd1 | 4031 | strlcat(type_str, "L", sizeof(type_str)); |
c44ab6f1 | 4032 | if (es_evi->flags & BGP_EVPNES_EVI_REMOTE) |
9e0c2fd1 | 4033 | strlcat(type_str, "R", sizeof(type_str)); |
c44ab6f1 | 4034 | |
9e0c2fd1 | 4035 | bgp_evpn_es_evi_vteps_str(vtep_str, es_evi, sizeof(vtep_str)); |
c44ab6f1 | 4036 | if (!strlen(vtep_str)) |
9e0c2fd1 | 4037 | strlcpy(vtep_str, "-", sizeof(type_str)); |
c44ab6f1 AK |
4038 | |
4039 | vty_out(vty, "VNI: %d ESI: %s\n", | |
4040 | es_evi->vpn->vni, es_evi->es->esi_str); | |
4041 | vty_out(vty, " Type: %s\n", type_str); | |
4a8cd6ad PG |
4042 | if (es_evi->es_frag) { |
4043 | vty_out(vty, " ES fragment RD: "); | |
4044 | vty_out(vty, BGP_RD_AS_FORMAT(mode), | |
c4f64ea9 | 4045 | &es_evi->es_frag->prd); |
4a8cd6ad PG |
4046 | vty_out(vty, "\n"); |
4047 | } | |
c44ab6f1 AK |
4048 | vty_out(vty, " Inconsistencies: %s\n", |
4049 | (es_evi->flags & BGP_EVPNES_EVI_INCONS_VTEP_LIST) ? | |
4050 | "es-vtep-mismatch":"-"); | |
4051 | vty_out(vty, " VTEPs: %s\n", vtep_str); | |
4052 | vty_out(vty, "\n"); | |
4053 | } | |
4054 | } | |
4055 | ||
4056 | static void bgp_evpn_es_evi_show_one_vni(struct bgpevpn *vpn, struct vty *vty, | |
4057 | json_object *json_array, bool detail) | |
4058 | { | |
4059 | struct bgp_evpn_es_evi *es_evi; | |
4060 | json_object *json = NULL; | |
4061 | ||
4062 | RB_FOREACH(es_evi, bgp_es_evi_rb_head, &vpn->es_evi_rb_tree) { | |
4063 | if (json_array) | |
4064 | /* create a separate json object for each ES */ | |
4065 | json = json_object_new_object(); | |
4066 | if (detail) | |
4067 | bgp_evpn_es_evi_show_entry_detail(vty, es_evi, json); | |
4068 | else | |
4069 | bgp_evpn_es_evi_show_entry(vty, es_evi, json); | |
4070 | /* add ES to the json array */ | |
4071 | if (json_array) | |
4072 | json_object_array_add(json_array, json); | |
4073 | } | |
4074 | } | |
4075 | ||
4076 | struct es_evi_show_ctx { | |
4077 | struct vty *vty; | |
4078 | json_object *json; | |
4079 | int detail; | |
4080 | }; | |
4081 | ||
4082 | static void bgp_evpn_es_evi_show_one_vni_hash_cb(struct hash_bucket *bucket, | |
4083 | void *ctxt) | |
4084 | { | |
4085 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
4086 | struct es_evi_show_ctx *wctx = (struct es_evi_show_ctx *)ctxt; | |
4087 | ||
4088 | bgp_evpn_es_evi_show_one_vni(vpn, wctx->vty, wctx->json, wctx->detail); | |
4089 | } | |
4090 | ||
4091 | /* Display all ES EVIs */ | |
4092 | void bgp_evpn_es_evi_show(struct vty *vty, bool uj, bool detail) | |
4093 | { | |
4094 | json_object *json_array = NULL; | |
4095 | struct es_evi_show_ctx wctx; | |
4096 | struct bgp *bgp; | |
4097 | ||
4098 | if (uj) { | |
4099 | /* create an array of ES-EVIs */ | |
4100 | json_array = json_object_new_array(); | |
4101 | } | |
4102 | ||
4103 | wctx.vty = vty; | |
4104 | wctx.json = json_array; | |
4105 | wctx.detail = detail; | |
4106 | ||
4107 | bgp = bgp_get_evpn(); | |
4108 | ||
4109 | if (!json_array && !detail) { | |
4110 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
4111 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
4112 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
4113 | "VNI", "ESI", "Flags", "VTEPs"); | |
4114 | } | |
4115 | ||
4116 | if (bgp) | |
4117 | hash_iterate(bgp->vnihash, | |
4118 | (void (*)(struct hash_bucket *, | |
4119 | void *))bgp_evpn_es_evi_show_one_vni_hash_cb, | |
4120 | &wctx); | |
c48349e3 | 4121 | if (uj) |
75eeda93 | 4122 | vty_json(vty, json_array); |
c44ab6f1 AK |
4123 | } |
4124 | ||
4125 | /* Display specific ES EVI */ | |
4126 | void bgp_evpn_es_evi_show_vni(struct vty *vty, vni_t vni, | |
4127 | bool uj, bool detail) | |
4128 | { | |
4129 | struct bgpevpn *vpn = NULL; | |
4130 | json_object *json_array = NULL; | |
4131 | struct bgp *bgp; | |
4132 | ||
4133 | if (uj) { | |
4134 | /* create an array of ES-EVIs */ | |
4135 | json_array = json_object_new_array(); | |
4136 | } | |
4137 | ||
4138 | bgp = bgp_get_evpn(); | |
4139 | if (bgp) | |
4140 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
4141 | ||
4142 | if (vpn) { | |
4143 | if (!json_array && !detail) { | |
4144 | vty_out(vty, "Flags: L local, R remote, I inconsistent\n"); | |
4145 | vty_out(vty, "VTEP-Flags: E EAD-per-ES, V EAD-per-EVI\n"); | |
4146 | vty_out(vty, "%-8s %-30s %-5s %s\n", | |
4147 | "VNI", "ESI", "Flags", "VTEPs"); | |
4148 | } | |
4149 | ||
4150 | bgp_evpn_es_evi_show_one_vni(vpn, vty, json_array, detail); | |
4151 | } else { | |
4152 | if (!uj) | |
4153 | vty_out(vty, "VNI not found\n"); | |
4154 | } | |
4155 | ||
c48349e3 | 4156 | if (uj) |
75eeda93 | 4157 | vty_json(vty, json_array); |
c44ab6f1 AK |
4158 | } |
4159 | ||
4160 | /***************************************************************************** | |
4161 | * Ethernet Segment Consistency checks | |
4162 | * Consistency checking is done to detect misconfig or mis-cabling. When | |
4163 | * an inconsistency is detected it is simply logged (and displayed via | |
4164 | * show commands) at this point. A more drastic action can be executed (based | |
4165 | * on user config) in the future. | |
4166 | */ | |
8fc2ffb3 AK |
4167 | static void bgp_evpn_es_cons_checks_timer_start(void) |
4168 | { | |
4169 | if (!bgp_mh_info->consistency_checking || bgp_mh_info->t_cons_check) | |
4170 | return; | |
4171 | ||
4172 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4173 | zlog_debug("periodic consistency checking started"); | |
4174 | ||
4175 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4176 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4177 | &bgp_mh_info->t_cons_check); | |
4178 | } | |
4179 | ||
c44ab6f1 AK |
4180 | /* queue up the es for background consistency checks */ |
4181 | static void bgp_evpn_es_cons_checks_pend_add(struct bgp_evpn_es *es) | |
4182 | { | |
4183 | if (!bgp_mh_info->consistency_checking) | |
4184 | /* consistency checking is not enabled */ | |
4185 | return; | |
4186 | ||
4187 | if (CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
4188 | /* already queued for consistency checking */ | |
4189 | return; | |
4190 | ||
8fc2ffb3 AK |
4191 | /* start the periodic timer for consistency checks if it is not |
4192 | * already running */ | |
4193 | bgp_evpn_es_cons_checks_timer_start(); | |
4194 | ||
c44ab6f1 AK |
4195 | SET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); |
4196 | listnode_init(&es->pend_es_listnode, es); | |
4197 | listnode_add_after(bgp_mh_info->pend_es_list, | |
4198 | listtail_unchecked(bgp_mh_info->pend_es_list), | |
4199 | &es->pend_es_listnode); | |
4200 | } | |
4201 | ||
4202 | /* pull the ES from the consistency check list */ | |
4203 | static void bgp_evpn_es_cons_checks_pend_del(struct bgp_evpn_es *es) | |
4204 | { | |
4205 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND)) | |
4206 | return; | |
4207 | ||
4208 | UNSET_FLAG(es->flags, BGP_EVPNES_CONS_CHECK_PEND); | |
4209 | list_delete_node(bgp_mh_info->pend_es_list, | |
4210 | &es->pend_es_listnode); | |
4211 | } | |
4212 | ||
4213 | /* Number of active VTEPs associated with the ES-per-EVI */ | |
4214 | static uint32_t bgp_evpn_es_evi_get_active_vtep_cnt( | |
4215 | struct bgp_evpn_es_evi *es_evi) | |
4216 | { | |
4217 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4218 | struct listnode *node; | |
4219 | uint32_t vtep_cnt = 0; | |
4220 | ||
4221 | for (ALL_LIST_ELEMENTS_RO(es_evi->es_evi_vtep_list, node, evi_vtep)) { | |
4222 | if (CHECK_FLAG(evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4223 | ++vtep_cnt; | |
4224 | } | |
4225 | ||
4226 | return vtep_cnt; | |
4227 | } | |
4228 | ||
4229 | /* Number of active VTEPs associated with the ES */ | |
4230 | static uint32_t bgp_evpn_es_get_active_vtep_cnt(struct bgp_evpn_es *es) | |
4231 | { | |
4232 | struct listnode *node; | |
4233 | uint32_t vtep_cnt = 0; | |
4234 | struct bgp_evpn_es_vtep *es_vtep; | |
4235 | ||
4236 | for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { | |
4237 | if (CHECK_FLAG(es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4238 | ++vtep_cnt; | |
4239 | } | |
4240 | ||
4241 | return vtep_cnt; | |
4242 | } | |
4243 | ||
4244 | static struct bgp_evpn_es_vtep *bgp_evpn_es_get_next_active_vtep( | |
4245 | struct bgp_evpn_es *es, struct bgp_evpn_es_vtep *es_vtep) | |
4246 | { | |
4247 | struct listnode *node; | |
4248 | struct bgp_evpn_es_vtep *next_es_vtep; | |
4249 | ||
4250 | if (es_vtep) | |
4251 | node = listnextnode_unchecked(&es_vtep->es_listnode); | |
4252 | else | |
4253 | node = listhead(es->es_vtep_list); | |
4254 | ||
4255 | for (; node; node = listnextnode_unchecked(node)) { | |
4256 | next_es_vtep = listgetdata(node); | |
4257 | if (CHECK_FLAG(next_es_vtep->flags, BGP_EVPNES_VTEP_ACTIVE)) | |
4258 | return next_es_vtep; | |
4259 | } | |
4260 | ||
4261 | return NULL; | |
4262 | } | |
4263 | ||
4264 | static struct bgp_evpn_es_evi_vtep *bgp_evpn_es_evi_get_next_active_vtep( | |
4265 | struct bgp_evpn_es_evi *es_evi, | |
4266 | struct bgp_evpn_es_evi_vtep *evi_vtep) | |
4267 | { | |
4268 | struct listnode *node; | |
4269 | struct bgp_evpn_es_evi_vtep *next_evi_vtep; | |
4270 | ||
4271 | if (evi_vtep) | |
4272 | node = listnextnode_unchecked(&evi_vtep->es_evi_listnode); | |
4273 | else | |
4274 | node = listhead(es_evi->es_evi_vtep_list); | |
4275 | ||
4276 | for (; node; node = listnextnode_unchecked(node)) { | |
4277 | next_evi_vtep = listgetdata(node); | |
4278 | if (CHECK_FLAG(next_evi_vtep->flags, BGP_EVPN_EVI_VTEP_ACTIVE)) | |
4279 | return next_evi_vtep; | |
4280 | } | |
4281 | ||
4282 | return NULL; | |
4283 | } | |
4284 | ||
4285 | static void bgp_evpn_es_evi_set_inconsistent(struct bgp_evpn_es_evi *es_evi) | |
4286 | { | |
4287 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST)) { | |
4288 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4289 | zlog_debug("inconsistency detected - es %s evi %u vtep list mismatch", | |
4290 | es_evi->es->esi_str, | |
4291 | es_evi->vpn->vni); | |
4292 | SET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4293 | ||
4294 | /* update parent ES with the incosistency setting */ | |
4295 | if (!es_evi->es->incons_evi_vtep_cnt && | |
4296 | BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4297 | zlog_debug("inconsistency detected - es %s vtep list mismatch", | |
4298 | es_evi->es->esi_str); | |
4299 | ++es_evi->es->incons_evi_vtep_cnt; | |
4300 | SET_FLAG(es_evi->es->inconsistencies, | |
4301 | BGP_EVPNES_INCONS_VTEP_LIST); | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | static uint32_t bgp_evpn_es_run_consistency_checks(struct bgp_evpn_es *es) | |
4306 | { | |
4307 | int proc_cnt = 0; | |
4308 | int es_active_vtep_cnt; | |
4309 | int evi_active_vtep_cnt; | |
4310 | struct bgp_evpn_es_evi *es_evi; | |
4311 | struct listnode *evi_node; | |
4312 | struct bgp_evpn_es_vtep *es_vtep; | |
4313 | struct bgp_evpn_es_evi_vtep *evi_vtep; | |
4314 | ||
4315 | /* reset the inconsistencies and re-evaluate */ | |
4316 | es->incons_evi_vtep_cnt = 0; | |
4317 | es->inconsistencies = 0; | |
4318 | ||
4319 | es_active_vtep_cnt = bgp_evpn_es_get_active_vtep_cnt(es); | |
4320 | for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, | |
4321 | evi_node, es_evi)) { | |
4322 | ++proc_cnt; | |
4323 | ||
4324 | /* reset the inconsistencies on the EVI and re-evaluate*/ | |
4325 | UNSET_FLAG(es_evi->flags, BGP_EVPNES_EVI_INCONS_VTEP_LIST); | |
4326 | ||
4327 | evi_active_vtep_cnt = | |
4328 | bgp_evpn_es_evi_get_active_vtep_cnt(es_evi); | |
4329 | if (es_active_vtep_cnt != evi_active_vtep_cnt) { | |
4330 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4331 | continue; | |
4332 | } | |
4333 | ||
4334 | if (!es_active_vtep_cnt) | |
4335 | continue; | |
4336 | ||
4337 | es_vtep = NULL; | |
4338 | evi_vtep = NULL; | |
4339 | while ((es_vtep = bgp_evpn_es_get_next_active_vtep( | |
4340 | es, es_vtep))) { | |
4341 | evi_vtep = bgp_evpn_es_evi_get_next_active_vtep(es_evi, | |
4342 | evi_vtep); | |
4343 | if (!evi_vtep) { | |
4344 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4345 | break; | |
4346 | } | |
4347 | if (es_vtep->vtep_ip.s_addr != | |
4348 | evi_vtep->vtep_ip.s_addr) { | |
4349 | /* inconsistency detected; set it and move | |
4350 | * to the next evi | |
4351 | */ | |
4352 | bgp_evpn_es_evi_set_inconsistent(es_evi); | |
4353 | break; | |
4354 | } | |
4355 | } | |
4356 | } | |
4357 | ||
4358 | return proc_cnt; | |
4359 | } | |
4360 | ||
cc9f21da | 4361 | static void bgp_evpn_run_consistency_checks(struct thread *t) |
c44ab6f1 AK |
4362 | { |
4363 | int proc_cnt = 0; | |
c44ab6f1 AK |
4364 | struct listnode *node; |
4365 | struct listnode *nextnode; | |
4366 | struct bgp_evpn_es *es; | |
4367 | ||
4368 | for (ALL_LIST_ELEMENTS(bgp_mh_info->pend_es_list, | |
4369 | node, nextnode, es)) { | |
c44ab6f1 AK |
4370 | ++proc_cnt; |
4371 | /* run consistency checks on the ES and remove it from the | |
4372 | * pending list | |
4373 | */ | |
4374 | proc_cnt += bgp_evpn_es_run_consistency_checks(es); | |
4375 | bgp_evpn_es_cons_checks_pend_del(es); | |
4376 | if (proc_cnt > 500) | |
4377 | break; | |
4378 | } | |
4379 | ||
4380 | /* restart the timer */ | |
4381 | thread_add_timer(bm->master, bgp_evpn_run_consistency_checks, NULL, | |
4382 | BGP_EVPN_CONS_CHECK_INTERVAL, | |
4383 | &bgp_mh_info->t_cons_check); | |
c44ab6f1 AK |
4384 | } |
4385 | ||
090efa2f AK |
4386 | /***************************************************************************** |
4387 | * EVPN-Nexthop and RMAC management: nexthops associated with Type-2 routes | |
4388 | * that have an ES as destination are consolidated by BGP into a per-VRF | |
4389 | * nh->rmac mapping which is sent to zebra. Zebra installs the nexthop | |
4390 | * as a remote neigh/fdb entry with a dummy (type-1) prefix referencing it. | |
4391 | * | |
4392 | * This handling is needed because Type-2 routes with ES as dest use NHG | |
4393 | * that is setup using EAD routes (i.e. such NHGs do not include the | |
4394 | * RMAC info). | |
4395 | ****************************************************************************/ | |
4396 | static void bgp_evpn_nh_zebra_update_send(struct bgp_evpn_nh *nh, bool add) | |
4397 | { | |
4398 | struct stream *s; | |
4399 | struct bgp *bgp_vrf = nh->bgp_vrf; | |
4400 | ||
4401 | /* Check socket. */ | |
4402 | if (!zclient || zclient->sock < 0) | |
4403 | return; | |
4404 | ||
4405 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
4406 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp_vrf)) { | |
4407 | if (BGP_DEBUG(zebra, ZEBRA)) | |
4408 | zlog_debug("No zebra instance, not %s remote nh %s", | |
4409 | add ? "adding" : "deleting", nh->nh_str); | |
4410 | return; | |
4411 | } | |
4412 | ||
4413 | s = zclient->obuf; | |
4414 | stream_reset(s); | |
4415 | ||
4416 | zclient_create_header( | |
4417 | s, add ? ZEBRA_EVPN_REMOTE_NH_ADD : ZEBRA_EVPN_REMOTE_NH_DEL, | |
4418 | bgp_vrf->vrf_id); | |
4419 | stream_putl(s, bgp_vrf->vrf_id); | |
4420 | stream_put(s, &nh->ip, sizeof(nh->ip)); | |
4421 | if (add) | |
4422 | stream_put(s, &nh->rmac, sizeof(nh->rmac)); | |
4423 | ||
4424 | stream_putw_at(s, 0, stream_get_endp(s)); | |
4425 | ||
4426 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4427 | if (add) | |
4428 | zlog_debug("evpn vrf %s nh %s rmac %pEA add to zebra", | |
dc9ca53f DS |
4429 | nh->bgp_vrf->name_pretty, nh->nh_str, |
4430 | &nh->rmac); | |
090efa2f AK |
4431 | else if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) |
4432 | zlog_debug("evpn vrf %s nh %s del to zebra", | |
dc9ca53f | 4433 | nh->bgp_vrf->name_pretty, nh->nh_str); |
090efa2f AK |
4434 | } |
4435 | ||
23aa35ad AK |
4436 | frrtrace(2, frr_bgp, evpn_mh_nh_rmac_zsend, add, nh); |
4437 | ||
090efa2f AK |
4438 | zclient_send_message(zclient); |
4439 | } | |
4440 | ||
4441 | static void bgp_evpn_nh_zebra_update(struct bgp_evpn_nh *nh, bool add) | |
4442 | { | |
4443 | if (add && !is_zero_mac(&nh->rmac)) { | |
4444 | nh->flags |= BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4445 | bgp_evpn_nh_zebra_update_send(nh, true); | |
4446 | } else { | |
4447 | if (!(nh->flags & BGP_EVPN_NH_READY_FOR_ZEBRA)) | |
4448 | return; | |
4449 | nh->flags &= ~BGP_EVPN_NH_READY_FOR_ZEBRA; | |
4450 | bgp_evpn_nh_zebra_update_send(nh, false); | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | static void *bgp_evpn_nh_alloc(void *p) | |
4455 | { | |
4456 | struct bgp_evpn_nh *tmp_n = p; | |
4457 | struct bgp_evpn_nh *n; | |
4458 | ||
4459 | n = XCALLOC(MTYPE_BGP_EVPN_NH, sizeof(struct bgp_evpn_nh)); | |
4460 | *n = *tmp_n; | |
4461 | ||
4462 | return ((void *)n); | |
4463 | } | |
4464 | ||
4465 | static struct bgp_evpn_nh *bgp_evpn_nh_find(struct bgp *bgp_vrf, | |
4466 | struct ipaddr *ip) | |
4467 | { | |
4468 | struct bgp_evpn_nh tmp; | |
4469 | struct bgp_evpn_nh *n; | |
4470 | ||
4471 | memset(&tmp, 0, sizeof(tmp)); | |
4472 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
4473 | n = hash_lookup(bgp_vrf->evpn_nh_table, &tmp); | |
4474 | ||
4475 | return n; | |
4476 | } | |
4477 | ||
4478 | /* Add nexthop entry - implicitly created on first path reference */ | |
4479 | static struct bgp_evpn_nh *bgp_evpn_nh_add(struct bgp *bgp_vrf, | |
4480 | struct ipaddr *ip, | |
4481 | struct bgp_path_info *pi) | |
4482 | { | |
4483 | struct bgp_evpn_nh tmp_n; | |
4484 | struct bgp_evpn_nh *n = NULL; | |
4485 | ||
6006b807 | 4486 | memset(&tmp_n, 0, sizeof(tmp_n)); |
090efa2f AK |
4487 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); |
4488 | n = hash_get(bgp_vrf->evpn_nh_table, &tmp_n, bgp_evpn_nh_alloc); | |
4489 | ipaddr2str(ip, n->nh_str, sizeof(n->nh_str)); | |
4490 | n->bgp_vrf = bgp_vrf; | |
4491 | ||
4492 | n->pi_list = list_new(); | |
4493 | listset_app_node_mem(n->pi_list); | |
4494 | ||
4495 | /* Setup ref_pi when the nh is created */ | |
4496 | if (CHECK_FLAG(pi->flags, BGP_PATH_VALID) && pi->attr) { | |
4497 | n->ref_pi = pi; | |
4498 | memcpy(&n->rmac, &pi->attr->rmac, ETH_ALEN); | |
4499 | } | |
4500 | ||
4501 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f DS |
4502 | zlog_debug("evpn vrf %s nh %s rmac %pEA add", |
4503 | n->bgp_vrf->name_pretty, n->nh_str, &n->rmac); | |
090efa2f AK |
4504 | bgp_evpn_nh_zebra_update(n, true); |
4505 | return n; | |
4506 | } | |
4507 | ||
4508 | /* Delete nexthop entry if there are no paths referencing it */ | |
4509 | static void bgp_evpn_nh_del(struct bgp_evpn_nh *n) | |
4510 | { | |
4511 | struct bgp_evpn_nh *tmp_n; | |
4512 | struct bgp *bgp_vrf = n->bgp_vrf; | |
4513 | ||
4514 | if (listcount(n->pi_list)) | |
4515 | return; | |
4516 | ||
4517 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f DS |
4518 | zlog_debug("evpn vrf %s nh %s del to zebra", |
4519 | bgp_vrf->name_pretty, n->nh_str); | |
090efa2f AK |
4520 | |
4521 | bgp_evpn_nh_zebra_update(n, false); | |
4522 | list_delete(&n->pi_list); | |
4523 | tmp_n = hash_release(bgp_vrf->evpn_nh_table, n); | |
4524 | XFREE(MTYPE_BGP_EVPN_NH, tmp_n); | |
4525 | } | |
4526 | ||
3727e359 DA |
4527 | static void hash_evpn_nh_free(struct bgp_evpn_nh *ben) |
4528 | { | |
4529 | XFREE(MTYPE_BGP_EVPN_NH, ben); | |
4530 | } | |
4531 | ||
090efa2f AK |
4532 | static unsigned int bgp_evpn_nh_hash_keymake(const void *p) |
4533 | { | |
4534 | const struct bgp_evpn_nh *n = p; | |
4535 | const struct ipaddr *ip = &n->ip; | |
4536 | ||
4537 | if (IS_IPADDR_V4(ip)) | |
4538 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
4539 | ||
4540 | return jhash2(ip->ipaddr_v6.s6_addr32, | |
4541 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
4542 | } | |
4543 | ||
4544 | static bool bgp_evpn_nh_cmp(const void *p1, const void *p2) | |
4545 | { | |
4546 | const struct bgp_evpn_nh *n1 = p1; | |
4547 | const struct bgp_evpn_nh *n2 = p2; | |
4548 | ||
4549 | if (n1 == NULL && n2 == NULL) | |
4550 | return true; | |
4551 | ||
4552 | if (n1 == NULL || n2 == NULL) | |
4553 | return false; | |
4554 | ||
60cda04d | 4555 | return (ipaddr_cmp(&n1->ip, &n2->ip) == 0); |
090efa2f AK |
4556 | } |
4557 | ||
4558 | void bgp_evpn_nh_init(struct bgp *bgp_vrf) | |
4559 | { | |
4560 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f | 4561 | zlog_debug("evpn vrf %s nh init", bgp_vrf->name_pretty); |
090efa2f AK |
4562 | bgp_vrf->evpn_nh_table = hash_create( |
4563 | bgp_evpn_nh_hash_keymake, bgp_evpn_nh_cmp, "BGP EVPN NH table"); | |
4564 | } | |
4565 | ||
4566 | static void bgp_evpn_nh_flush_entry(struct bgp_evpn_nh *nh) | |
4567 | { | |
4568 | struct listnode *node; | |
4569 | struct listnode *nnode; | |
4570 | struct bgp_path_evpn_nh_info *nh_info; | |
4571 | ||
4572 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f | 4573 | zlog_debug("evpn vrf %s nh %s flush", nh->bgp_vrf->name_pretty, |
090efa2f AK |
4574 | nh->nh_str); |
4575 | ||
4576 | /* force flush paths */ | |
4577 | for (ALL_LIST_ELEMENTS(nh->pi_list, node, nnode, nh_info)) | |
4578 | bgp_evpn_path_nh_del(nh->bgp_vrf, nh_info->pi); | |
4579 | } | |
4580 | ||
4581 | static void bgp_evpn_nh_flush_cb(struct hash_bucket *bucket, void *ctxt) | |
4582 | { | |
4583 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4584 | ||
4585 | bgp_evpn_nh_flush_entry(nh); | |
4586 | } | |
4587 | ||
4588 | void bgp_evpn_nh_finish(struct bgp *bgp_vrf) | |
4589 | { | |
4590 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f | 4591 | zlog_debug("evpn vrf %s nh finish", bgp_vrf->name_pretty); |
090efa2f AK |
4592 | hash_iterate( |
4593 | bgp_vrf->evpn_nh_table, | |
4594 | (void (*)(struct hash_bucket *, void *))bgp_evpn_nh_flush_cb, | |
4595 | NULL); | |
3727e359 | 4596 | hash_clean(bgp_vrf->evpn_nh_table, (void (*)(void *))hash_evpn_nh_free); |
090efa2f AK |
4597 | hash_free(bgp_vrf->evpn_nh_table); |
4598 | bgp_vrf->evpn_nh_table = NULL; | |
4599 | } | |
4600 | ||
4601 | static void bgp_evpn_nh_update_ref_pi(struct bgp_evpn_nh *nh) | |
4602 | { | |
4603 | struct listnode *node; | |
4604 | struct bgp_path_info *pi; | |
4605 | struct bgp_path_evpn_nh_info *nh_info; | |
4606 | ||
4607 | if (nh->ref_pi) | |
4608 | return; | |
4609 | ||
4610 | for (ALL_LIST_ELEMENTS_RO(nh->pi_list, node, nh_info)) { | |
4611 | pi = nh_info->pi; | |
4612 | if (!CHECK_FLAG(pi->flags, BGP_PATH_VALID) || !pi->attr) | |
4613 | continue; | |
4614 | ||
4615 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
4616 | zlog_debug("evpn vrf %s nh %s ref_pi update", | |
dc9ca53f | 4617 | nh->bgp_vrf->name_pretty, nh->nh_str); |
090efa2f AK |
4618 | nh->ref_pi = pi; |
4619 | /* If we have a new pi copy rmac from it and update | |
4620 | * zebra if the new rmac is different | |
4621 | */ | |
4622 | if (memcmp(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN)) { | |
4623 | memcpy(&nh->rmac, &nh->ref_pi->attr->rmac, ETH_ALEN); | |
4624 | bgp_evpn_nh_zebra_update(nh, true); | |
4625 | } | |
4626 | break; | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | static void bgp_evpn_nh_clear_ref_pi(struct bgp_evpn_nh *nh, | |
4631 | struct bgp_path_info *pi) | |
4632 | { | |
4633 | if (nh->ref_pi != pi) | |
4634 | return; | |
4635 | ||
4636 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) | |
dc9ca53f DS |
4637 | zlog_debug("evpn vrf %s nh %s ref_pi clear", |
4638 | nh->bgp_vrf->name_pretty, nh->nh_str); | |
090efa2f AK |
4639 | nh->ref_pi = NULL; |
4640 | /* try to find another ref_pi */ | |
4641 | bgp_evpn_nh_update_ref_pi(nh); | |
4642 | /* couldn't find one - clear the old rmac and notify zebra */ | |
4643 | if (!nh->ref_pi) { | |
4644 | memset(&nh->rmac, 0, ETH_ALEN); | |
4645 | bgp_evpn_nh_zebra_update(nh, true); | |
4646 | } | |
4647 | } | |
4648 | ||
4649 | static void bgp_evpn_path_nh_info_free(struct bgp_path_evpn_nh_info *nh_info) | |
4650 | { | |
4651 | bgp_evpn_path_nh_unlink(nh_info); | |
4652 | XFREE(MTYPE_BGP_EVPN_PATH_NH_INFO, nh_info); | |
4653 | } | |
4654 | ||
4655 | static struct bgp_path_evpn_nh_info * | |
4656 | bgp_evpn_path_nh_info_new(struct bgp_path_info *pi) | |
4657 | { | |
4658 | struct bgp_path_info_extra *e; | |
4659 | struct bgp_path_mh_info *mh_info; | |
4660 | struct bgp_path_evpn_nh_info *nh_info; | |
4661 | ||
4662 | e = bgp_path_info_extra_get(pi); | |
4663 | ||
4664 | /* If mh_info doesn't exist allocate it */ | |
4665 | mh_info = e->mh_info; | |
4666 | if (!mh_info) | |
4667 | e->mh_info = mh_info = XCALLOC(MTYPE_BGP_EVPN_PATH_MH_INFO, | |
4668 | sizeof(struct bgp_path_mh_info)); | |
4669 | ||
4670 | /* If nh_info doesn't exist allocate it */ | |
4671 | nh_info = mh_info->nh_info; | |
4672 | if (!nh_info) { | |
4673 | mh_info->nh_info = nh_info = | |
4674 | XCALLOC(MTYPE_BGP_EVPN_PATH_NH_INFO, | |
4675 | sizeof(struct bgp_path_evpn_nh_info)); | |
4676 | nh_info->pi = pi; | |
4677 | } | |
4678 | ||
4679 | return nh_info; | |
4680 | } | |
4681 | ||
4682 | static void bgp_evpn_path_nh_unlink(struct bgp_path_evpn_nh_info *nh_info) | |
4683 | { | |
4684 | struct bgp_evpn_nh *nh = nh_info->nh; | |
4685 | struct bgp_path_info *pi; | |
4686 | char prefix_buf[PREFIX_STRLEN]; | |
4687 | ||
4688 | if (!nh) | |
4689 | return; | |
4690 | ||
4691 | pi = nh_info->pi; | |
4692 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
4693 | zlog_debug("path %s unlinked from nh %s %s", | |
4694 | pi->net ? prefix2str(&pi->net->p, prefix_buf, | |
4695 | sizeof(prefix_buf)) | |
4696 | : "", | |
dc9ca53f | 4697 | nh->bgp_vrf->name_pretty, nh->nh_str); |
090efa2f AK |
4698 | |
4699 | list_delete_node(nh->pi_list, &nh_info->nh_listnode); | |
4700 | ||
4701 | nh_info->nh = NULL; | |
4702 | ||
4703 | /* check if the ref_pi need to be updated */ | |
4704 | bgp_evpn_nh_clear_ref_pi(nh, pi); | |
4705 | ||
4706 | /* if there are no other references against the nh it | |
4707 | * needs to be freed | |
4708 | */ | |
4709 | bgp_evpn_nh_del(nh); | |
4710 | ||
4711 | /* Note we don't free the path nh_info on unlink; it will be freed up | |
4712 | * along with the path. | |
4713 | */ | |
4714 | } | |
4715 | ||
4716 | static void bgp_evpn_path_nh_link(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4717 | { | |
4718 | struct bgp_path_evpn_nh_info *nh_info; | |
4719 | struct bgp_evpn_nh *nh; | |
090efa2f AK |
4720 | struct ipaddr ip; |
4721 | ||
4722 | /* EVPN nexthop setup in bgp has been turned off */ | |
4723 | if (!bgp_mh_info->bgp_evpn_nh_setup) | |
4724 | return; | |
4725 | ||
4726 | if (!bgp_vrf->evpn_nh_table) { | |
4727 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 | 4728 | zlog_debug("path %pFX linked to vrf %s failed", |
dc9ca53f | 4729 | &pi->net->p, bgp_vrf->name_pretty); |
090efa2f AK |
4730 | return; |
4731 | } | |
4732 | ||
4733 | nh_info = (pi->extra && pi->extra->mh_info) | |
4734 | ? pi->extra->mh_info->nh_info | |
4735 | : NULL; | |
4736 | ||
4737 | /* if NHG is not being used for this path we don't need to manage the | |
4738 | * nexthops in bgp (they are managed by zebra instead) | |
4739 | */ | |
4740 | if (!(pi->attr->es_flags & ATTR_ES_L3_NHG_USE)) { | |
4741 | if (nh_info) | |
4742 | bgp_evpn_path_nh_unlink(nh_info); | |
4743 | return; | |
4744 | } | |
4745 | ||
4746 | /* setup nh_info against the path if it doesn't aleady exist */ | |
4747 | if (!nh_info) | |
4748 | nh_info = bgp_evpn_path_nh_info_new(pi); | |
4749 | ||
4750 | /* find-create nh */ | |
4751 | memset(&ip, 0, sizeof(ip)); | |
4752 | if (pi->net->p.family == AF_INET6) { | |
4753 | SET_IPADDR_V6(&ip); | |
4754 | memcpy(&ip.ipaddr_v6, &pi->attr->mp_nexthop_global, | |
4755 | sizeof(ip.ipaddr_v6)); | |
4756 | } else { | |
4757 | SET_IPADDR_V4(&ip); | |
4758 | memcpy(&ip.ipaddr_v4, &pi->attr->nexthop, sizeof(ip.ipaddr_v4)); | |
4759 | } | |
4760 | ||
4761 | nh = bgp_evpn_nh_find(bgp_vrf, &ip); | |
4762 | if (!nh) | |
4763 | nh = bgp_evpn_nh_add(bgp_vrf, &ip, pi); | |
4764 | ||
4765 | /* dup check */ | |
4766 | if (nh_info->nh == nh) { | |
4767 | /* Check if any of the paths are now valid */ | |
4768 | bgp_evpn_nh_update_ref_pi(nh); | |
4769 | return; | |
4770 | } | |
4771 | ||
4772 | /* unlink old nh if any */ | |
4773 | bgp_evpn_path_nh_unlink(nh_info); | |
4774 | ||
4775 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
70545a29 | 4776 | zlog_debug("path %pFX linked to nh %s %s", &pi->net->p, |
dc9ca53f | 4777 | nh->bgp_vrf->name_pretty, nh->nh_str); |
090efa2f AK |
4778 | |
4779 | /* link mac-ip path to the new nh */ | |
4780 | nh_info->nh = nh; | |
4781 | listnode_init(&nh_info->nh_listnode, nh_info); | |
4782 | listnode_add(nh->pi_list, &nh_info->nh_listnode); | |
4783 | /* If a new valid path got linked to the nh see if can get the rmac | |
4784 | * from it | |
4785 | */ | |
4786 | bgp_evpn_nh_update_ref_pi(nh); | |
4787 | if (BGP_DEBUG(evpn_mh, EVPN_MH_ES)) { | |
4788 | if (!nh->ref_pi) | |
4789 | zlog_debug( | |
70545a29 | 4790 | "path %pFX linked to nh %s %s with no valid pi", |
dc9ca53f DS |
4791 | &pi->net->p, nh->bgp_vrf->name_pretty, |
4792 | nh->nh_str); | |
090efa2f AK |
4793 | } |
4794 | } | |
4795 | ||
4796 | void bgp_evpn_path_nh_del(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4797 | { | |
4798 | struct bgp_path_evpn_nh_info *nh_info; | |
4799 | ||
4800 | nh_info = (pi->extra && pi->extra->mh_info) | |
4801 | ? pi->extra->mh_info->nh_info | |
4802 | : NULL; | |
4803 | ||
4804 | if (!nh_info) | |
4805 | return; | |
4806 | ||
4807 | bgp_evpn_path_nh_unlink(nh_info); | |
4808 | } | |
4809 | ||
4810 | void bgp_evpn_path_nh_add(struct bgp *bgp_vrf, struct bgp_path_info *pi) | |
4811 | { | |
4812 | bgp_evpn_path_nh_link(bgp_vrf, pi); | |
4813 | } | |
4814 | ||
4815 | static void bgp_evpn_nh_show_entry(struct bgp_evpn_nh *nh, struct vty *vty, | |
4816 | json_object *json_array) | |
4817 | { | |
4818 | json_object *json = NULL; | |
4819 | char mac_buf[ETHER_ADDR_STRLEN]; | |
4820 | char prefix_buf[PREFIX_STRLEN]; | |
4821 | ||
4822 | if (json_array) | |
4823 | /* create a separate json object for each ES */ | |
4824 | json = json_object_new_object(); | |
4825 | ||
4826 | prefix_mac2str(&nh->rmac, mac_buf, sizeof(mac_buf)); | |
4827 | if (nh->ref_pi && nh->ref_pi->net) | |
4828 | prefix2str(&nh->ref_pi->net->p, prefix_buf, sizeof(prefix_buf)); | |
4829 | else | |
4830 | prefix_buf[0] = '\0'; | |
4831 | if (json) { | |
dc9ca53f | 4832 | json_object_string_add(json, "vrf", nh->bgp_vrf->name_pretty); |
090efa2f AK |
4833 | json_object_string_add(json, "ip", nh->nh_str); |
4834 | json_object_string_add(json, "rmac", mac_buf); | |
4835 | json_object_string_add(json, "basePath", prefix_buf); | |
4836 | json_object_int_add(json, "pathCount", listcount(nh->pi_list)); | |
4837 | } else { | |
dc9ca53f DS |
4838 | vty_out(vty, "%-15s %-15s %-17s %-10d %s\n", |
4839 | nh->bgp_vrf->name_pretty, nh->nh_str, mac_buf, | |
4840 | listcount(nh->pi_list), prefix_buf); | |
090efa2f AK |
4841 | } |
4842 | ||
4843 | /* add ES to the json array */ | |
4844 | if (json_array) | |
4845 | json_object_array_add(json_array, json); | |
4846 | } | |
4847 | ||
4848 | struct nh_show_ctx { | |
4849 | struct vty *vty; | |
4850 | json_object *json; | |
4851 | }; | |
4852 | ||
4853 | static void bgp_evpn_nh_show_hash_cb(struct hash_bucket *bucket, void *ctxt) | |
4854 | { | |
4855 | struct bgp_evpn_nh *nh = (struct bgp_evpn_nh *)bucket->data; | |
4856 | struct nh_show_ctx *wctx = (struct nh_show_ctx *)ctxt; | |
4857 | ||
4858 | bgp_evpn_nh_show_entry(nh, wctx->vty, wctx->json); | |
4859 | } | |
4860 | ||
4861 | /* Display all evpn nexthops */ | |
4862 | void bgp_evpn_nh_show(struct vty *vty, bool uj) | |
4863 | { | |
4864 | json_object *json_array = NULL; | |
4865 | struct bgp *bgp_vrf; | |
4866 | struct listnode *node; | |
4867 | struct nh_show_ctx wctx; | |
4868 | ||
4869 | if (uj) { | |
4870 | /* create an array of nexthops */ | |
4871 | json_array = json_object_new_array(); | |
4872 | } else { | |
4873 | vty_out(vty, "%-15s %-15s %-17s %-10s %s\n", "VRF", "IP", | |
4874 | "RMAC", "#Paths", "Base Path"); | |
4875 | } | |
4876 | ||
4877 | wctx.vty = vty; | |
4878 | wctx.json = json_array; | |
4879 | ||
4880 | /* walk through all vrfs */ | |
4881 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4882 | hash_iterate(bgp_vrf->evpn_nh_table, | |
4883 | (void (*)(struct hash_bucket *, | |
4884 | void *))bgp_evpn_nh_show_hash_cb, | |
4885 | &wctx); | |
4886 | } | |
4887 | ||
4888 | /* print the array of json-ESs */ | |
c48349e3 | 4889 | if (uj) |
75eeda93 | 4890 | vty_json(vty, json_array); |
090efa2f AK |
4891 | } |
4892 | ||
c44ab6f1 AK |
4893 | /*****************************************************************************/ |
4894 | void bgp_evpn_mh_init(void) | |
4895 | { | |
4896 | bm->mh_info = XCALLOC(MTYPE_BGP_EVPN_MH_INFO, sizeof(*bm->mh_info)); | |
4897 | ||
4898 | /* setup ES tables */ | |
4899 | RB_INIT(bgp_es_rb_head, &bgp_mh_info->es_rb_tree); | |
4900 | /* local ES list */ | |
4901 | bgp_mh_info->local_es_list = list_new(); | |
4902 | listset_app_node_mem(bgp_mh_info->local_es_list); | |
4903 | /* list of ESs with pending processing */ | |
4904 | bgp_mh_info->pend_es_list = list_new(); | |
4905 | listset_app_node_mem(bgp_mh_info->pend_es_list); | |
4906 | ||
fe8293c3 AK |
4907 | bgp_mh_info->ead_evi_rx = BGP_EVPN_MH_EAD_EVI_RX_DEF; |
4908 | bgp_mh_info->ead_evi_tx = BGP_EVPN_MH_EAD_EVI_TX_DEF; | |
f4a5218d AK |
4909 | bgp_mh_info->ead_es_export_rtl = list_new(); |
4910 | bgp_mh_info->ead_es_export_rtl->cmp = | |
4911 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
4912 | bgp_mh_info->ead_es_export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
fe8293c3 | 4913 | |
c44ab6f1 AK |
4914 | /* config knobs - XXX add cli to control it */ |
4915 | bgp_mh_info->ead_evi_adv_for_down_links = true; | |
4916 | bgp_mh_info->consistency_checking = true; | |
2867823e | 4917 | bgp_mh_info->host_routes_use_l3nhg = BGP_EVPN_MH_USE_ES_L3NHG_DEF; |
70524092 | 4918 | bgp_mh_info->suppress_l3_ecomm_on_inactive_es = true; |
090efa2f | 4919 | bgp_mh_info->bgp_evpn_nh_setup = true; |
bb37eabe | 4920 | bgp_mh_info->evi_per_es_frag = BGP_EVPN_MAX_EVI_PER_ES_FRAG; |
c44ab6f1 | 4921 | |
c44ab6f1 AK |
4922 | memset(&zero_esi_buf, 0, sizeof(esi_t)); |
4923 | } | |
4924 | ||
4925 | void bgp_evpn_mh_finish(void) | |
4926 | { | |
4927 | struct bgp_evpn_es *es; | |
4928 | struct bgp_evpn_es *es_next; | |
c44ab6f1 | 4929 | |
45a859f1 AK |
4930 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) |
4931 | zlog_debug("evpn mh finish"); | |
4932 | ||
4933 | RB_FOREACH_SAFE (es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree, | |
4934 | es_next) { | |
d57e0c05 | 4935 | bgp_evpn_es_local_info_clear(es, true); |
c44ab6f1 | 4936 | } |
8fc2ffb3 | 4937 | if (bgp_mh_info->t_cons_check) |
c3aaa89a | 4938 | THREAD_OFF(bgp_mh_info->t_cons_check); |
c44ab6f1 AK |
4939 | list_delete(&bgp_mh_info->local_es_list); |
4940 | list_delete(&bgp_mh_info->pend_es_list); | |
f4a5218d | 4941 | list_delete(&bgp_mh_info->ead_es_export_rtl); |
c44ab6f1 AK |
4942 | |
4943 | XFREE(MTYPE_BGP_EVPN_MH_INFO, bgp_mh_info); | |
4944 | } | |
acd1d9bc AD |
4945 | |
4946 | /* This function is called when disable-ead-evi-rx knob flaps */ | |
4947 | void bgp_evpn_switch_ead_evi_rx(void) | |
4948 | { | |
4949 | struct bgp *bgp; | |
4950 | struct bgp_evpn_es *es; | |
4951 | struct bgp_evpn_es_evi *es_evi; | |
4952 | struct listnode *evi_node = NULL; | |
4953 | struct listnode *evi_next = NULL; | |
4954 | struct bgp_evpn_es_evi_vtep *vtep; | |
4955 | struct listnode *vtep_node = NULL; | |
4956 | struct listnode *vtep_next = NULL; | |
4957 | ||
4958 | bgp = bgp_get_evpn(); | |
4959 | if (!bgp) | |
4960 | return; | |
4961 | ||
4962 | /* | |
4963 | * Process all the remote es_evi_vteps and reevaluate if the es_evi_vtep | |
4964 | * is active. | |
4965 | */ | |
4966 | RB_FOREACH(es, bgp_es_rb_head, &bgp_mh_info->es_rb_tree) { | |
4967 | if (!CHECK_FLAG(es->flags, BGP_EVPNES_REMOTE)) | |
4968 | continue; | |
4969 | ||
4970 | for (ALL_LIST_ELEMENTS(es->es_evi_list, evi_node, evi_next, | |
4971 | es_evi)) { | |
4972 | if (!CHECK_FLAG(es_evi->flags, BGP_EVPNES_EVI_REMOTE)) | |
4973 | continue; | |
4974 | ||
4975 | for (ALL_LIST_ELEMENTS(es_evi->es_evi_vtep_list, | |
4976 | vtep_node, vtep_next, vtep)) | |
4977 | bgp_evpn_es_evi_vtep_re_eval_active(bgp, vtep); | |
4978 | } | |
4979 | } | |
4980 | } |