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Commit | Line | Data |
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6336e12b | 1 | /* |
7cbae20a | 2 | * Zebra EVPN Neighbor code |
6336e12b PR |
3 | * Copyright (C) 2016, 2017 Cumulus Networks, Inc. |
4 | * | |
5 | * This file is part of FRR. | |
6 | * | |
7 | * FRR is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRR is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with FRR; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "hash.h" | |
7cbae20a | 26 | #include "interface.h" |
6336e12b | 27 | #include "jhash.h" |
6336e12b PR |
28 | #include "memory.h" |
29 | #include "prefix.h" | |
6336e12b | 30 | #include "vlan.h" |
7cbae20a | 31 | #include "json.h" |
6336e12b | 32 | |
7cbae20a | 33 | #include "zebra/zserv.h" |
6336e12b | 34 | #include "zebra/debug.h" |
7cbae20a | 35 | #include "zebra/zebra_router.h" |
6336e12b | 36 | #include "zebra/rt.h" |
7cbae20a | 37 | #include "zebra/zebra_errors.h" |
6336e12b | 38 | #include "zebra/zebra_vrf.h" |
6336e12b | 39 | #include "zebra/zebra_evpn.h" |
6336e12b | 40 | #include "zebra/zebra_evpn_mh.h" |
7cbae20a PR |
41 | #include "zebra/zebra_evpn_neigh.h" |
42 | #include "zebra/zebra_evpn_mac.h" | |
43 | ||
44 | DEFINE_MTYPE_STATIC(ZEBRA, NEIGH, "EVI Neighbor"); | |
6336e12b | 45 | |
7cbae20a PR |
46 | /* |
47 | * Make hash key for neighbors. | |
48 | */ | |
49 | static unsigned int neigh_hash_keymake(const void *p) | |
6336e12b | 50 | { |
7cbae20a PR |
51 | const zebra_neigh_t *n = p; |
52 | const struct ipaddr *ip = &n->ip; | |
6336e12b | 53 | |
7cbae20a PR |
54 | if (IS_IPADDR_V4(ip)) |
55 | return jhash_1word(ip->ipaddr_v4.s_addr, 0); | |
6336e12b | 56 | |
7cbae20a PR |
57 | return jhash2(ip->ipaddr_v6.s6_addr32, |
58 | array_size(ip->ipaddr_v6.s6_addr32), 0); | |
59 | } | |
6336e12b | 60 | |
7cbae20a PR |
61 | /* |
62 | * Compare two neighbor hash structures. | |
63 | */ | |
64 | static bool neigh_cmp(const void *p1, const void *p2) | |
65 | { | |
66 | const zebra_neigh_t *n1 = p1; | |
67 | const zebra_neigh_t *n2 = p2; | |
6336e12b | 68 | |
7cbae20a PR |
69 | if (n1 == NULL && n2 == NULL) |
70 | return true; | |
6336e12b | 71 | |
7cbae20a PR |
72 | if (n1 == NULL || n2 == NULL) |
73 | return false; | |
6336e12b | 74 | |
7cbae20a | 75 | return (memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)) == 0); |
6336e12b | 76 | } |
6336e12b | 77 | |
7cbae20a | 78 | int neigh_list_cmp(void *p1, void *p2) |
6336e12b | 79 | { |
7cbae20a PR |
80 | const zebra_neigh_t *n1 = p1; |
81 | const zebra_neigh_t *n2 = p2; | |
6336e12b | 82 | |
7cbae20a PR |
83 | return memcmp(&n1->ip, &n2->ip, sizeof(struct ipaddr)); |
84 | } | |
6336e12b | 85 | |
7cbae20a PR |
86 | struct hash *zebra_neigh_db_create(const char *desc) |
87 | { | |
88 | return hash_create(neigh_hash_keymake, neigh_cmp, desc); | |
6336e12b PR |
89 | } |
90 | ||
7cbae20a | 91 | uint32_t num_dup_detected_neighs(zebra_evpn_t *zevpn) |
6336e12b PR |
92 | { |
93 | unsigned int i; | |
94 | uint32_t num_neighs = 0; | |
95 | struct hash *hash; | |
96 | struct hash_bucket *hb; | |
97 | zebra_neigh_t *nbr; | |
98 | ||
99 | hash = zevpn->neigh_table; | |
100 | if (!hash) | |
101 | return num_neighs; | |
102 | for (i = 0; i < hash->size; i++) { | |
103 | for (hb = hash->index[i]; hb; hb = hb->next) { | |
104 | nbr = (zebra_neigh_t *)hb->data; | |
105 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) | |
106 | num_neighs++; | |
107 | } | |
108 | } | |
109 | ||
110 | return num_neighs; | |
111 | } | |
112 | ||
7cbae20a PR |
113 | /* |
114 | * Helper function to determine maximum width of neighbor IP address for | |
115 | * display - just because we're dealing with IPv6 addresses that can | |
116 | * widely vary. | |
117 | */ | |
118 | void zebra_evpn_find_neigh_addr_width(struct hash_bucket *bucket, void *ctxt) | |
6336e12b | 119 | { |
7cbae20a PR |
120 | zebra_neigh_t *n; |
121 | char buf[INET6_ADDRSTRLEN]; | |
122 | struct neigh_walk_ctx *wctx = ctxt; | |
123 | int width; | |
6336e12b | 124 | |
7cbae20a | 125 | n = (zebra_neigh_t *)bucket->data; |
6336e12b | 126 | |
7cbae20a PR |
127 | ipaddr2str(&n->ip, buf, sizeof(buf)); |
128 | width = strlen(buf); | |
129 | if (width > wctx->addr_width) | |
130 | wctx->addr_width = width; | |
131 | } | |
6336e12b | 132 | |
7cbae20a PR |
133 | /* |
134 | * Count of remote neighbors referencing this MAC. | |
135 | */ | |
136 | int remote_neigh_count(zebra_mac_t *zmac) | |
137 | { | |
138 | zebra_neigh_t *n = NULL; | |
139 | struct listnode *node = NULL; | |
140 | int count = 0; | |
141 | ||
142 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
143 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) | |
144 | count++; | |
145 | } | |
146 | ||
147 | return count; | |
6336e12b PR |
148 | } |
149 | ||
7cbae20a PR |
150 | /* |
151 | * Install remote neighbor into the kernel. | |
152 | */ | |
153 | int zebra_evpn_rem_neigh_install(zebra_evpn_t *zevpn, zebra_neigh_t *n, | |
154 | bool was_static) | |
6336e12b | 155 | { |
7cbae20a PR |
156 | struct interface *vlan_if; |
157 | int flags; | |
158 | int ret = 0; | |
6336e12b | 159 | |
7cbae20a PR |
160 | if (!(n->flags & ZEBRA_NEIGH_REMOTE)) |
161 | return 0; | |
6336e12b | 162 | |
7cbae20a PR |
163 | vlan_if = zevpn_map_to_svi(zevpn); |
164 | if (!vlan_if) | |
165 | return -1; | |
6336e12b | 166 | |
7cbae20a PR |
167 | flags = DPLANE_NTF_EXT_LEARNED; |
168 | if (n->flags & ZEBRA_NEIGH_ROUTER_FLAG) | |
169 | flags |= DPLANE_NTF_ROUTER; | |
170 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
171 | ||
172 | dplane_rem_neigh_add(vlan_if, &n->ip, &n->emac, flags, was_static); | |
173 | ||
174 | return ret; | |
6336e12b PR |
175 | } |
176 | ||
7cbae20a PR |
177 | /* |
178 | * Install neighbor hash entry - called upon access VLAN change. | |
6336e12b | 179 | */ |
7cbae20a | 180 | void zebra_evpn_install_neigh_hash(struct hash_bucket *bucket, void *ctxt) |
6336e12b | 181 | { |
7cbae20a PR |
182 | zebra_neigh_t *n; |
183 | struct neigh_walk_ctx *wctx = ctxt; | |
6336e12b | 184 | |
7cbae20a | 185 | n = (zebra_neigh_t *)bucket->data; |
6336e12b | 186 | |
7cbae20a PR |
187 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) |
188 | zebra_evpn_rem_neigh_install(wctx->zevpn, n, | |
189 | false /*was_static*/); | |
6336e12b PR |
190 | } |
191 | ||
7cbae20a PR |
192 | /* |
193 | * Callback to allocate neighbor hash entry. | |
194 | */ | |
195 | static void *zebra_evpn_neigh_alloc(void *p) | |
6336e12b | 196 | { |
7cbae20a PR |
197 | const zebra_neigh_t *tmp_n = p; |
198 | zebra_neigh_t *n; | |
6336e12b | 199 | |
7cbae20a PR |
200 | n = XCALLOC(MTYPE_NEIGH, sizeof(zebra_neigh_t)); |
201 | *n = *tmp_n; | |
6336e12b | 202 | |
7cbae20a PR |
203 | return ((void *)n); |
204 | } | |
205 | ||
206 | static void zebra_evpn_local_neigh_ref_mac(zebra_neigh_t *n, | |
207 | struct ethaddr *macaddr, | |
208 | zebra_mac_t *mac, | |
209 | bool send_mac_update) | |
210 | { | |
7cbae20a PR |
211 | bool old_static; |
212 | bool new_static; | |
213 | ||
214 | memcpy(&n->emac, macaddr, ETH_ALEN); | |
215 | n->mac = mac; | |
216 | ||
217 | /* Link to new MAC */ | |
218 | if (!mac) | |
6336e12b PR |
219 | return; |
220 | ||
7cbae20a PR |
221 | listnode_add_sort(mac->neigh_list, n); |
222 | if (n->flags & ZEBRA_NEIGH_ALL_PEER_FLAGS) { | |
223 | old_static = zebra_evpn_mac_is_static(mac); | |
224 | ++mac->sync_neigh_cnt; | |
225 | new_static = zebra_evpn_mac_is_static(mac); | |
226 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
6336e12b | 227 | zlog_debug( |
ef7b8be4 DL |
228 | "sync-neigh ref mac vni %u ip %pIA mac %pEA ref %d", |
229 | n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a PR |
230 | mac->sync_neigh_cnt); |
231 | if ((old_static != new_static) && send_mac_update) | |
232 | /* program the local mac in the kernel */ | |
233 | zebra_evpn_sync_mac_dp_install( | |
234 | mac, false /*set_inactive*/, | |
235 | false /*force_clear_static*/, __func__); | |
236 | } | |
237 | } | |
6336e12b | 238 | |
7cbae20a | 239 | /* sync-path that is active on an ES peer */ |
33064a62 PR |
240 | static void zebra_evpn_sync_neigh_dp_install(zebra_neigh_t *n, |
241 | bool set_inactive, | |
242 | bool force_clear_static, | |
243 | const char *caller) | |
7cbae20a | 244 | { |
7cbae20a PR |
245 | struct zebra_ns *zns; |
246 | struct interface *ifp; | |
247 | bool set_static; | |
248 | bool set_router; | |
6336e12b | 249 | |
7cbae20a PR |
250 | zns = zebra_ns_lookup(NS_DEFAULT); |
251 | ifp = if_lookup_by_index_per_ns(zns, n->ifindex); | |
252 | if (!ifp) { | |
253 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
254 | zlog_debug( | |
ef7b8be4 DL |
255 | "%s: dp-install sync-neigh vni %u ip %pIA mac %pEA if %d f 0x%x skipped", |
256 | caller, n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a | 257 | n->ifindex, n->flags); |
6336e12b PR |
258 | return; |
259 | } | |
260 | ||
7cbae20a PR |
261 | if (force_clear_static) |
262 | set_static = false; | |
263 | else | |
264 | set_static = zebra_evpn_neigh_is_static(n); | |
6336e12b | 265 | |
7cbae20a | 266 | set_router = !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); |
6336e12b | 267 | |
7cbae20a PR |
268 | /* XXX - this will change post integration with the new kernel */ |
269 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) | |
270 | set_inactive = true; | |
6336e12b | 271 | |
7cbae20a | 272 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
6336e12b | 273 | zlog_debug( |
ef7b8be4 DL |
274 | "%s: dp-install sync-neigh vni %u ip %pIA mac %pEA if %s(%d) f 0x%x%s%s%s", |
275 | caller, n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a PR |
276 | ifp->name, n->ifindex, n->flags, |
277 | set_router ? " router" : "", | |
278 | set_static ? " static" : "", | |
279 | set_inactive ? " inactive" : ""); | |
280 | dplane_local_neigh_add(ifp, &n->ip, &n->emac, set_router, set_static, | |
281 | set_inactive); | |
6336e12b PR |
282 | } |
283 | ||
284 | /* | |
7cbae20a | 285 | * Inform BGP about local neighbor addition. |
6336e12b | 286 | */ |
7cbae20a PR |
287 | int zebra_evpn_neigh_send_add_to_client(vni_t vni, struct ipaddr *ip, |
288 | struct ethaddr *macaddr, | |
289 | zebra_mac_t *zmac, uint32_t neigh_flags, | |
290 | uint32_t seq) | |
6336e12b | 291 | { |
7cbae20a | 292 | uint8_t flags = 0; |
6336e12b | 293 | |
7cbae20a PR |
294 | if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) { |
295 | /* host reachability has not been verified locally */ | |
6336e12b | 296 | |
7cbae20a PR |
297 | /* if no ES peer is claiming reachability we can't advertise |
298 | * the entry | |
299 | */ | |
300 | if (!CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
301 | return 0; | |
6336e12b | 302 | |
7cbae20a PR |
303 | /* ES peers are claiming reachability; we will |
304 | * advertise the entry but with a proxy flag | |
305 | */ | |
306 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
6336e12b PR |
307 | } |
308 | ||
7cbae20a PR |
309 | if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_DEF_GW)) |
310 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
311 | /* Set router flag (R-bit) based on local neigh entry add */ | |
312 | if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_ROUTER_FLAG)) | |
313 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
314 | if (CHECK_FLAG(neigh_flags, ZEBRA_NEIGH_SVI_IP)) | |
315 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP); | |
6336e12b | 316 | |
00a7710c AK |
317 | return zebra_evpn_macip_send_msg_to_client(vni, macaddr, ip, flags, seq, |
318 | ZEBRA_NEIGH_ACTIVE, zmac->es, | |
319 | ZEBRA_MACIP_ADD); | |
6336e12b PR |
320 | } |
321 | ||
322 | /* | |
7cbae20a | 323 | * Inform BGP about local neighbor deletion. |
6336e12b | 324 | */ |
7cbae20a PR |
325 | int zebra_evpn_neigh_send_del_to_client(vni_t vni, struct ipaddr *ip, |
326 | struct ethaddr *macaddr, uint32_t flags, | |
327 | int state, bool force) | |
6336e12b | 328 | { |
7cbae20a PR |
329 | if (!force) { |
330 | if (CHECK_FLAG(flags, ZEBRA_NEIGH_LOCAL_INACTIVE) | |
331 | && !CHECK_FLAG(flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
332 | /* the neigh was not advertised - nothing to delete */ | |
333 | return 0; | |
6336e12b PR |
334 | } |
335 | ||
7cbae20a PR |
336 | return zebra_evpn_macip_send_msg_to_client( |
337 | vni, macaddr, ip, flags, 0, state, NULL, ZEBRA_MACIP_DEL); | |
6336e12b PR |
338 | } |
339 | ||
33064a62 PR |
340 | static void zebra_evpn_neigh_send_add_del_to_client(zebra_neigh_t *n, |
341 | bool old_bgp_ready, | |
342 | bool new_bgp_ready) | |
6336e12b | 343 | { |
7cbae20a PR |
344 | if (new_bgp_ready) |
345 | zebra_evpn_neigh_send_add_to_client(n->zevpn->vni, &n->ip, | |
346 | &n->emac, n->mac, n->flags, | |
347 | n->loc_seq); | |
348 | else if (old_bgp_ready) | |
349 | zebra_evpn_neigh_send_del_to_client(n->zevpn->vni, &n->ip, | |
350 | &n->emac, n->flags, | |
351 | n->state, true /*force*/); | |
6336e12b PR |
352 | } |
353 | ||
7cbae20a PR |
354 | /* if the static flag associated with the neigh changes we need |
355 | * to update the sync-neigh references against the MAC | |
356 | * and inform the dataplane about the static flag changes. | |
6336e12b | 357 | */ |
7cbae20a PR |
358 | void zebra_evpn_sync_neigh_static_chg(zebra_neigh_t *n, bool old_n_static, |
359 | bool new_n_static, bool defer_n_dp, | |
360 | bool defer_mac_dp, const char *caller) | |
6336e12b | 361 | { |
7cbae20a PR |
362 | zebra_mac_t *mac = n->mac; |
363 | bool old_mac_static; | |
364 | bool new_mac_static; | |
6336e12b | 365 | |
7cbae20a PR |
366 | if (old_n_static == new_n_static) |
367 | return; | |
6336e12b | 368 | |
7cbae20a PR |
369 | /* update the neigh sync references in the dataplane. if |
370 | * the neigh is in the middle of updates the caller can | |
371 | * request for a defer | |
372 | */ | |
373 | if (!defer_n_dp) | |
374 | zebra_evpn_sync_neigh_dp_install(n, false /* set_inactive */, | |
375 | false /* force_clear_static */, | |
376 | __func__); | |
6336e12b | 377 | |
7cbae20a PR |
378 | if (!mac) |
379 | return; | |
6336e12b | 380 | |
7cbae20a PR |
381 | /* update the mac sync ref cnt */ |
382 | old_mac_static = zebra_evpn_mac_is_static(mac); | |
383 | if (new_n_static) { | |
384 | ++mac->sync_neigh_cnt; | |
385 | } else if (old_n_static) { | |
386 | if (mac->sync_neigh_cnt) | |
387 | --mac->sync_neigh_cnt; | |
6336e12b | 388 | } |
7cbae20a | 389 | new_mac_static = zebra_evpn_mac_is_static(mac); |
6336e12b | 390 | |
7cbae20a PR |
391 | /* update the mac sync references in the dataplane */ |
392 | if ((old_mac_static != new_mac_static) && !defer_mac_dp) | |
393 | zebra_evpn_sync_mac_dp_install(mac, false /* set_inactive */, | |
394 | false /* force_clear_static */, | |
395 | __func__); | |
6336e12b | 396 | |
7cbae20a PR |
397 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
398 | zlog_debug( | |
ef7b8be4 DL |
399 | "sync-neigh ref-chg vni %u ip %pIA mac %pEA f 0x%x %d%s%s%s%s by %s", |
400 | n->zevpn->vni, &n->ip, &n->emac, n->flags, | |
401 | mac->sync_neigh_cnt, | |
7cbae20a PR |
402 | old_n_static ? " old_n_static" : "", |
403 | new_n_static ? " new_n_static" : "", | |
404 | old_mac_static ? " old_mac_static" : "", | |
405 | new_mac_static ? " new_mac_static" : "", caller); | |
6336e12b PR |
406 | } |
407 | ||
7cbae20a PR |
408 | /* Neigh hold timer is used to age out peer-active flag. |
409 | * | |
410 | * During this wait time we expect the dataplane component or an | |
411 | * external neighmgr daemon to probe existing hosts to independently | |
412 | * establish their presence on the ES. | |
6336e12b | 413 | */ |
7cbae20a | 414 | static int zebra_evpn_neigh_hold_exp_cb(struct thread *t) |
6336e12b | 415 | { |
7cbae20a PR |
416 | zebra_neigh_t *n; |
417 | bool old_bgp_ready; | |
418 | bool new_bgp_ready; | |
419 | bool old_n_static; | |
420 | bool new_n_static; | |
7cbae20a PR |
421 | |
422 | n = THREAD_ARG(t); | |
423 | /* the purpose of the hold timer is to age out the peer-active | |
424 | * flag | |
425 | */ | |
426 | if (!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
427 | return 0; | |
6336e12b | 428 | |
7cbae20a PR |
429 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); |
430 | old_n_static = zebra_evpn_neigh_is_static(n); | |
431 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
432 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
433 | new_n_static = zebra_evpn_neigh_is_static(n); | |
6336e12b | 434 | |
7cbae20a | 435 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
ef7b8be4 DL |
436 | zlog_debug("sync-neigh vni %u ip %pIA mac %pEA 0x%x hold expired", |
437 | n->zevpn->vni, &n->ip, &n->emac, n->flags); | |
6336e12b | 438 | |
7cbae20a PR |
439 | /* re-program the local neigh in the dataplane if the neigh is no |
440 | * longer static | |
441 | */ | |
442 | if (old_n_static != new_n_static) | |
443 | zebra_evpn_sync_neigh_static_chg( | |
444 | n, old_n_static, new_n_static, false /*defer_n_dp*/, | |
445 | false /*defer_mac_dp*/, __func__); | |
6336e12b | 446 | |
7cbae20a PR |
447 | /* inform bgp if needed */ |
448 | if (old_bgp_ready != new_bgp_ready) | |
449 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
450 | new_bgp_ready); | |
6336e12b | 451 | |
6336e12b PR |
452 | return 0; |
453 | } | |
454 | ||
7cbae20a | 455 | static inline void zebra_evpn_neigh_start_hold_timer(zebra_neigh_t *n) |
6336e12b | 456 | { |
7cbae20a PR |
457 | if (n->hold_timer) |
458 | return; | |
6336e12b | 459 | |
7cbae20a | 460 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
ef7b8be4 DL |
461 | zlog_debug("sync-neigh vni %u ip %pIA mac %pEA 0x%x hold start", |
462 | n->zevpn->vni, &n->ip, &n->emac, n->flags); | |
7cbae20a PR |
463 | thread_add_timer(zrouter.master, zebra_evpn_neigh_hold_exp_cb, n, |
464 | zmh_info->neigh_hold_time, &n->hold_timer); | |
465 | } | |
6336e12b | 466 | |
7cbae20a PR |
467 | static void zebra_evpn_local_neigh_deref_mac(zebra_neigh_t *n, |
468 | bool send_mac_update) | |
469 | { | |
470 | zebra_mac_t *mac = n->mac; | |
471 | zebra_evpn_t *zevpn = n->zevpn; | |
7cbae20a PR |
472 | bool old_static; |
473 | bool new_static; | |
6336e12b | 474 | |
7cbae20a PR |
475 | n->mac = NULL; |
476 | if (!mac) | |
477 | return; | |
6336e12b | 478 | |
7cbae20a PR |
479 | if ((n->flags & ZEBRA_NEIGH_ALL_PEER_FLAGS) && mac->sync_neigh_cnt) { |
480 | old_static = zebra_evpn_mac_is_static(mac); | |
481 | --mac->sync_neigh_cnt; | |
482 | new_static = zebra_evpn_mac_is_static(mac); | |
483 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
6336e12b | 484 | zlog_debug( |
ef7b8be4 DL |
485 | "sync-neigh deref mac vni %u ip %pIA mac %pEA ref %d", |
486 | n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a PR |
487 | mac->sync_neigh_cnt); |
488 | if ((old_static != new_static) && send_mac_update) | |
489 | /* program the local mac in the kernel */ | |
490 | zebra_evpn_sync_mac_dp_install( | |
491 | mac, false /* set_inactive */, | |
492 | false /* force_clear_static */, __func__); | |
6336e12b PR |
493 | } |
494 | ||
7cbae20a PR |
495 | listnode_delete(mac->neigh_list, n); |
496 | zebra_evpn_deref_ip2mac(zevpn, mac); | |
6336e12b PR |
497 | } |
498 | ||
7cbae20a | 499 | bool zebra_evpn_neigh_is_bgp_seq_ok(zebra_evpn_t *zevpn, zebra_neigh_t *n, |
16de1338 AK |
500 | struct ethaddr *macaddr, uint32_t seq, |
501 | bool sync) | |
6336e12b | 502 | { |
7cbae20a | 503 | uint32_t tmp_seq; |
16de1338 | 504 | const char *n_type; |
6336e12b | 505 | |
16de1338 | 506 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
7cbae20a | 507 | tmp_seq = n->loc_seq; |
16de1338 AK |
508 | n_type = "local"; |
509 | } else { | |
7cbae20a | 510 | tmp_seq = n->rem_seq; |
16de1338 AK |
511 | n_type = "remote"; |
512 | } | |
6336e12b | 513 | |
7cbae20a PR |
514 | if (seq < tmp_seq) { |
515 | /* if the neigh was never advertised to bgp we must accept | |
516 | * whatever sequence number bgp sends | |
517 | * XXX - check with Vivek | |
518 | */ | |
519 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL) | |
520 | && !zebra_evpn_neigh_is_ready_for_bgp(n)) { | |
16de1338 AK |
521 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH |
522 | || IS_ZEBRA_DEBUG_VXLAN) | |
7cbae20a | 523 | zlog_debug( |
ef7b8be4 | 524 | "%s-macip accept vni %u %s mac %pEA IP %pIA lower seq %u f 0x%x", |
16de1338 | 525 | sync ? "sync" : "remote", zevpn->vni, |
ef7b8be4 | 526 | n_type, macaddr, &n->ip, |
7cbae20a PR |
527 | tmp_seq, n->flags); |
528 | return true; | |
529 | } | |
6336e12b | 530 | |
16de1338 | 531 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH || IS_ZEBRA_DEBUG_VXLAN) |
7cbae20a | 532 | zlog_debug( |
ef7b8be4 | 533 | "%s-macip ignore vni %u %s mac %pEA IP %pIA as existing has higher seq %u f 0x%x", |
16de1338 | 534 | sync ? "sync" : "remote", zevpn->vni, n_type, |
ef7b8be4 | 535 | macaddr, &n->ip, tmp_seq, n->flags); |
7cbae20a | 536 | return false; |
6336e12b | 537 | } |
7cbae20a PR |
538 | |
539 | return true; | |
6336e12b PR |
540 | } |
541 | ||
542 | /* | |
7cbae20a | 543 | * Add neighbor entry. |
6336e12b | 544 | */ |
32fe7dfd PR |
545 | static zebra_neigh_t *zebra_evpn_neigh_add(zebra_evpn_t *zevpn, |
546 | struct ipaddr *ip, | |
547 | struct ethaddr *mac, | |
548 | zebra_mac_t *zmac, uint32_t n_flags) | |
6336e12b | 549 | { |
7cbae20a PR |
550 | zebra_neigh_t tmp_n; |
551 | zebra_neigh_t *n = NULL; | |
6336e12b | 552 | |
7cbae20a PR |
553 | memset(&tmp_n, 0, sizeof(zebra_neigh_t)); |
554 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); | |
555 | n = hash_get(zevpn->neigh_table, &tmp_n, zebra_evpn_neigh_alloc); | |
556 | assert(n); | |
6336e12b | 557 | |
7cbae20a PR |
558 | n->state = ZEBRA_NEIGH_INACTIVE; |
559 | n->zevpn = zevpn; | |
560 | n->dad_ip_auto_recovery_timer = NULL; | |
561 | n->flags = n_flags; | |
a05111ba | 562 | n->uptime = monotime(NULL); |
6336e12b | 563 | |
7cbae20a PR |
564 | if (!zmac) |
565 | zmac = zebra_evpn_mac_lookup(zevpn, mac); | |
566 | zebra_evpn_local_neigh_ref_mac(n, mac, zmac, | |
567 | false /* send_mac_update */); | |
6336e12b | 568 | |
7cbae20a | 569 | return n; |
6336e12b PR |
570 | } |
571 | ||
572 | /* | |
7cbae20a | 573 | * Delete neighbor entry. |
6336e12b | 574 | */ |
7cbae20a | 575 | int zebra_evpn_neigh_del(zebra_evpn_t *zevpn, zebra_neigh_t *n) |
6336e12b | 576 | { |
7cbae20a | 577 | zebra_neigh_t *tmp_n; |
6336e12b | 578 | |
7cbae20a PR |
579 | if (n->mac) |
580 | listnode_delete(n->mac->neigh_list, n); | |
6336e12b | 581 | |
7cbae20a PR |
582 | /* Cancel auto recovery */ |
583 | THREAD_OFF(n->dad_ip_auto_recovery_timer); | |
6336e12b | 584 | |
2b9e207e AK |
585 | /* Cancel proxy hold timer */ |
586 | zebra_evpn_neigh_stop_hold_timer(n); | |
587 | ||
7cbae20a PR |
588 | /* Free the VNI hash entry and allocated memory. */ |
589 | tmp_n = hash_release(zevpn->neigh_table, n); | |
590 | XFREE(MTYPE_NEIGH, tmp_n); | |
6336e12b PR |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
7cbae20a | 595 | void zebra_evpn_sync_neigh_del(zebra_neigh_t *n) |
6336e12b | 596 | { |
7cbae20a PR |
597 | bool old_n_static; |
598 | bool new_n_static; | |
6336e12b | 599 | |
7cbae20a | 600 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
ef7b8be4 DL |
601 | zlog_debug("sync-neigh del vni %u ip %pIA mac %pEA f 0x%x", |
602 | n->zevpn->vni, &n->ip, &n->emac, n->flags); | |
6336e12b | 603 | |
7cbae20a PR |
604 | old_n_static = zebra_evpn_neigh_is_static(n); |
605 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
606 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
607 | zebra_evpn_neigh_start_hold_timer(n); | |
608 | new_n_static = zebra_evpn_neigh_is_static(n); | |
6336e12b | 609 | |
7cbae20a PR |
610 | if (old_n_static != new_n_static) |
611 | zebra_evpn_sync_neigh_static_chg( | |
612 | n, old_n_static, new_n_static, false /*defer-dp*/, | |
613 | false /*defer_mac_dp*/, __func__); | |
614 | } | |
6336e12b | 615 | |
7cbae20a PR |
616 | zebra_neigh_t * |
617 | zebra_evpn_proc_sync_neigh_update(zebra_evpn_t *zevpn, zebra_neigh_t *n, | |
618 | uint16_t ipa_len, struct ipaddr *ipaddr, | |
619 | uint8_t flags, uint32_t seq, esi_t *esi, | |
620 | struct sync_mac_ip_ctx *ctx) | |
621 | { | |
622 | struct interface *ifp = NULL; | |
623 | bool is_router; | |
624 | zebra_mac_t *mac = ctx->mac; | |
625 | uint32_t tmp_seq; | |
626 | bool old_router = false; | |
627 | bool old_bgp_ready = false; | |
628 | bool new_bgp_ready; | |
629 | bool inform_dataplane = false; | |
630 | bool inform_bgp = false; | |
631 | bool old_mac_static; | |
632 | bool new_mac_static; | |
633 | bool set_dp_inactive = false; | |
7cbae20a PR |
634 | bool created; |
635 | ifindex_t ifindex = 0; | |
6336e12b | 636 | |
7cbae20a PR |
637 | /* locate l3-svi */ |
638 | ifp = zevpn_map_to_svi(zevpn); | |
639 | if (ifp) | |
640 | ifindex = ifp->ifindex; | |
6336e12b | 641 | |
7cbae20a PR |
642 | is_router = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); |
643 | old_mac_static = zebra_evpn_mac_is_static(mac); | |
6336e12b | 644 | |
7cbae20a PR |
645 | if (!n) { |
646 | uint32_t n_flags = 0; | |
6336e12b | 647 | |
7cbae20a PR |
648 | /* New neighbor - create */ |
649 | SET_FLAG(n_flags, ZEBRA_NEIGH_LOCAL); | |
650 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) | |
651 | SET_FLAG(n_flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
652 | else | |
653 | SET_FLAG(n_flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
654 | SET_FLAG(n_flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
6336e12b | 655 | |
7cbae20a PR |
656 | n = zebra_evpn_neigh_add(zevpn, ipaddr, &mac->macaddr, mac, |
657 | n_flags); | |
658 | n->ifindex = ifindex; | |
659 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
6336e12b | 660 | |
7cbae20a PR |
661 | created = true; |
662 | inform_dataplane = true; | |
663 | inform_bgp = true; | |
664 | set_dp_inactive = true; | |
665 | } else { | |
666 | bool mac_change; | |
667 | uint32_t old_flags = n->flags; | |
668 | bool old_n_static; | |
669 | bool new_n_static; | |
6336e12b | 670 | |
7cbae20a PR |
671 | created = false; |
672 | old_n_static = zebra_evpn_neigh_is_static(n); | |
673 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
674 | old_router = !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 675 | |
7cbae20a PR |
676 | mac_change = !!memcmp(&n->emac, &mac->macaddr, ETH_ALEN); |
677 | ||
678 | /* deref and clear old info */ | |
679 | if (mac_change) { | |
680 | if (old_bgp_ready) { | |
681 | zebra_evpn_neigh_send_del_to_client( | |
682 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
683 | n->state, false /*force*/); | |
684 | old_bgp_ready = false; | |
6336e12b | 685 | } |
bc3cd39b DS |
686 | zebra_evpn_local_neigh_deref_mac(n, |
687 | false /*send_mac_update*/); | |
6336e12b | 688 | } |
7cbae20a PR |
689 | /* clear old fwd info */ |
690 | n->rem_seq = 0; | |
691 | n->r_vtep_ip.s_addr = 0; | |
6336e12b | 692 | |
7cbae20a PR |
693 | /* setup new flags */ |
694 | n->flags = 0; | |
695 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
696 | /* retain activity flag if the neigh was | |
697 | * previously local | |
6336e12b | 698 | */ |
7cbae20a PR |
699 | if (old_flags & ZEBRA_NEIGH_LOCAL) { |
700 | n->flags |= (old_flags & ZEBRA_NEIGH_LOCAL_INACTIVE); | |
701 | } else { | |
702 | inform_dataplane = true; | |
703 | set_dp_inactive = true; | |
704 | n->flags |= ZEBRA_NEIGH_LOCAL_INACTIVE; | |
6336e12b PR |
705 | } |
706 | ||
7cbae20a PR |
707 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
708 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
709 | else | |
710 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
6336e12b | 711 | |
7cbae20a PR |
712 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) { |
713 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
714 | /* if the neigh was peer-active previously we | |
715 | * need to keep the flag and start the | |
716 | * holdtimer on it. the peer-active flag is | |
717 | * cleared on holdtimer expiry. | |
718 | */ | |
719 | if (CHECK_FLAG(old_flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) { | |
720 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
721 | zebra_evpn_neigh_start_hold_timer(n); | |
722 | } | |
723 | } else { | |
724 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
725 | /* stop hold timer if a peer has verified | |
726 | * reachability | |
727 | */ | |
728 | zebra_evpn_neigh_stop_hold_timer(n); | |
6336e12b | 729 | } |
7cbae20a | 730 | ZEBRA_NEIGH_SET_ACTIVE(n); |
6336e12b | 731 | |
7cbae20a | 732 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH && (old_flags != n->flags)) |
6336e12b | 733 | zlog_debug( |
ef7b8be4 DL |
734 | "sync-neigh vni %u ip %pIA mac %pEA old_f 0x%x new_f 0x%x", |
735 | n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a | 736 | old_flags, n->flags); |
6336e12b | 737 | |
7cbae20a PR |
738 | new_n_static = zebra_evpn_neigh_is_static(n); |
739 | if (mac_change) { | |
740 | set_dp_inactive = true; | |
741 | n->flags |= ZEBRA_NEIGH_LOCAL_INACTIVE; | |
742 | inform_dataplane = true; | |
743 | zebra_evpn_local_neigh_ref_mac( | |
744 | n, &mac->macaddr, mac, | |
745 | false /*send_mac_update*/); | |
746 | } else if (old_n_static != new_n_static) { | |
747 | inform_dataplane = true; | |
748 | /* if static flags have changed without a mac change | |
749 | * we need to create the correct sync-refs against | |
750 | * the existing mac | |
6336e12b | 751 | */ |
7cbae20a PR |
752 | zebra_evpn_sync_neigh_static_chg( |
753 | n, old_n_static, new_n_static, | |
754 | true /*defer_dp*/, true /*defer_mac_dp*/, | |
755 | __func__); | |
6336e12b | 756 | } |
6336e12b | 757 | |
7cbae20a PR |
758 | /* Update the forwarding info. */ |
759 | if (n->ifindex != ifindex) { | |
760 | n->ifindex = ifindex; | |
761 | inform_dataplane = true; | |
6336e12b | 762 | } |
a05111ba DS |
763 | |
764 | n->uptime = monotime(NULL); | |
6336e12b PR |
765 | } |
766 | ||
7cbae20a PR |
767 | /* update the neigh seq. we don't bother with the mac seq as |
768 | * sync_mac_update already took care of that | |
769 | */ | |
770 | tmp_seq = MAX(n->loc_seq, seq); | |
771 | if (tmp_seq != n->loc_seq) { | |
772 | n->loc_seq = tmp_seq; | |
773 | inform_bgp = true; | |
774 | } | |
6336e12b | 775 | |
7cbae20a PR |
776 | /* Mark Router flag (R-bit) */ |
777 | if (is_router) | |
778 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
779 | else | |
780 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 781 | |
7cbae20a PR |
782 | if (old_router != is_router) |
783 | inform_dataplane = true; | |
6336e12b | 784 | |
7cbae20a PR |
785 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); |
786 | if (old_bgp_ready != new_bgp_ready) | |
787 | inform_bgp = true; | |
6336e12b | 788 | |
7cbae20a PR |
789 | new_mac_static = zebra_evpn_mac_is_static(mac); |
790 | if ((old_mac_static != new_mac_static) || ctx->mac_dp_update_deferred) | |
791 | zebra_evpn_sync_mac_dp_install(mac, ctx->mac_inactive, | |
792 | false /* force_clear_static */, | |
793 | __func__); | |
6336e12b | 794 | |
7cbae20a PR |
795 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
796 | zlog_debug( | |
ef7b8be4 | 797 | "sync-neigh %s vni %u ip %pIA mac %pEA if %s(%d) seq %d f 0x%x%s%s", |
7cbae20a | 798 | created ? "created" : "updated", n->zevpn->vni, |
ef7b8be4 | 799 | &n->ip, &n->emac, |
7cbae20a PR |
800 | ifp ? ifp->name : "", ifindex, n->loc_seq, n->flags, |
801 | inform_bgp ? " inform_bgp" : "", | |
802 | inform_dataplane ? " inform_dp" : ""); | |
6336e12b | 803 | |
7cbae20a PR |
804 | if (inform_dataplane) |
805 | zebra_evpn_sync_neigh_dp_install(n, set_dp_inactive, | |
806 | false /* force_clear_static */, | |
807 | __func__); | |
6336e12b | 808 | |
7cbae20a PR |
809 | if (inform_bgp) |
810 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
811 | new_bgp_ready); | |
6336e12b | 812 | |
7cbae20a PR |
813 | return n; |
814 | } | |
6336e12b | 815 | |
7cbae20a PR |
816 | /* |
817 | * Uninstall remote neighbor from the kernel. | |
818 | */ | |
32fe7dfd | 819 | static int zebra_evpn_neigh_uninstall(zebra_evpn_t *zevpn, zebra_neigh_t *n) |
7cbae20a PR |
820 | { |
821 | struct interface *vlan_if; | |
6336e12b | 822 | |
7cbae20a PR |
823 | if (!(n->flags & ZEBRA_NEIGH_REMOTE)) |
824 | return 0; | |
6336e12b | 825 | |
7cbae20a PR |
826 | vlan_if = zevpn_map_to_svi(zevpn); |
827 | if (!vlan_if) | |
828 | return -1; | |
6336e12b | 829 | |
7cbae20a PR |
830 | ZEBRA_NEIGH_SET_INACTIVE(n); |
831 | n->loc_seq = 0; | |
6336e12b | 832 | |
7cbae20a | 833 | dplane_rem_neigh_delete(vlan_if, &n->ip); |
6336e12b PR |
834 | |
835 | return 0; | |
836 | } | |
837 | ||
7cbae20a PR |
838 | /* |
839 | * Free neighbor hash entry (callback) | |
840 | */ | |
841 | static void zebra_evpn_neigh_del_hash_entry(struct hash_bucket *bucket, | |
842 | void *arg) | |
6336e12b | 843 | { |
7cbae20a PR |
844 | struct neigh_walk_ctx *wctx = arg; |
845 | zebra_neigh_t *n = bucket->data; | |
6336e12b | 846 | |
7cbae20a PR |
847 | if (((wctx->flags & DEL_LOCAL_NEIGH) && (n->flags & ZEBRA_NEIGH_LOCAL)) |
848 | || ((wctx->flags & DEL_REMOTE_NEIGH) | |
849 | && (n->flags & ZEBRA_NEIGH_REMOTE)) | |
850 | || ((wctx->flags & DEL_REMOTE_NEIGH_FROM_VTEP) | |
851 | && (n->flags & ZEBRA_NEIGH_REMOTE) | |
852 | && IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip))) { | |
853 | if (wctx->upd_client && (n->flags & ZEBRA_NEIGH_LOCAL)) | |
854 | zebra_evpn_neigh_send_del_to_client( | |
855 | wctx->zevpn->vni, &n->ip, &n->emac, n->flags, | |
856 | n->state, false /*force*/); | |
6336e12b | 857 | |
7cbae20a PR |
858 | if (wctx->uninstall) { |
859 | if (zebra_evpn_neigh_is_static(n)) | |
860 | zebra_evpn_sync_neigh_dp_install( | |
861 | n, false /* set_inactive */, | |
862 | true /* force_clear_static */, | |
863 | __func__); | |
864 | if ((n->flags & ZEBRA_NEIGH_REMOTE)) | |
865 | zebra_evpn_neigh_uninstall(wctx->zevpn, n); | |
6336e12b PR |
866 | } |
867 | ||
7cbae20a PR |
868 | zebra_evpn_neigh_del(wctx->zevpn, n); |
869 | } | |
6336e12b | 870 | |
7cbae20a PR |
871 | return; |
872 | } | |
6336e12b | 873 | |
7cbae20a PR |
874 | /* |
875 | * Delete all neighbor entries for this EVPN. | |
876 | */ | |
877 | void zebra_evpn_neigh_del_all(zebra_evpn_t *zevpn, int uninstall, | |
878 | int upd_client, uint32_t flags) | |
879 | { | |
880 | struct neigh_walk_ctx wctx; | |
6336e12b | 881 | |
7cbae20a PR |
882 | if (!zevpn->neigh_table) |
883 | return; | |
6336e12b | 884 | |
7cbae20a PR |
885 | memset(&wctx, 0, sizeof(struct neigh_walk_ctx)); |
886 | wctx.zevpn = zevpn; | |
887 | wctx.uninstall = uninstall; | |
888 | wctx.upd_client = upd_client; | |
889 | wctx.flags = flags; | |
6336e12b | 890 | |
7cbae20a PR |
891 | hash_iterate(zevpn->neigh_table, zebra_evpn_neigh_del_hash_entry, |
892 | &wctx); | |
893 | } | |
6336e12b | 894 | |
7cbae20a PR |
895 | /* |
896 | * Look up neighbor hash entry. | |
897 | */ | |
898 | zebra_neigh_t *zebra_evpn_neigh_lookup(zebra_evpn_t *zevpn, struct ipaddr *ip) | |
899 | { | |
900 | zebra_neigh_t tmp; | |
901 | zebra_neigh_t *n; | |
6336e12b | 902 | |
7cbae20a PR |
903 | memset(&tmp, 0, sizeof(tmp)); |
904 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
905 | n = hash_lookup(zevpn->neigh_table, &tmp); | |
6336e12b | 906 | |
7cbae20a PR |
907 | return n; |
908 | } | |
6336e12b | 909 | |
7cbae20a PR |
910 | /* |
911 | * Process all neighbors associated with a MAC upon the MAC being learnt | |
912 | * locally or undergoing any other change (such as sequence number). | |
913 | */ | |
914 | void zebra_evpn_process_neigh_on_local_mac_change(zebra_evpn_t *zevpn, | |
915 | zebra_mac_t *zmac, | |
916 | bool seq_change, | |
917 | bool es_change) | |
918 | { | |
919 | zebra_neigh_t *n = NULL; | |
920 | struct listnode *node = NULL; | |
921 | struct zebra_vrf *zvrf = NULL; | |
6336e12b | 922 | |
7cbae20a | 923 | zvrf = vrf_info_lookup(zevpn->vxlan_if->vrf_id); |
6336e12b | 924 | |
7cbae20a | 925 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
926 | zlog_debug("Processing neighbors on local MAC %pEA %s, VNI %u", |
927 | &zmac->macaddr, seq_change ? "CHANGE" : "ADD", | |
928 | zevpn->vni); | |
6336e12b | 929 | |
7cbae20a PR |
930 | /* Walk all neighbors and mark any inactive local neighbors as |
931 | * active and/or update sequence number upon a move, and inform BGP. | |
932 | * The action for remote neighbors is TBD. | |
933 | * NOTE: We can't simply uninstall remote neighbors as the kernel may | |
934 | * accidentally end up deleting a just-learnt local neighbor. | |
935 | */ | |
936 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
937 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
938 | if (IS_ZEBRA_NEIGH_INACTIVE(n) || seq_change | |
939 | || es_change) { | |
940 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
941 | n->loc_seq = zmac->loc_seq; | |
b2ee2b71 AK |
942 | if (!(zebra_evpn_do_dup_addr_detect(zvrf) |
943 | && zvrf->dad_freeze | |
7cbae20a PR |
944 | && !!CHECK_FLAG(n->flags, |
945 | ZEBRA_NEIGH_DUPLICATE))) | |
946 | zebra_evpn_neigh_send_add_to_client( | |
947 | zevpn->vni, &n->ip, &n->emac, | |
948 | n->mac, n->flags, n->loc_seq); | |
949 | } | |
6336e12b | 950 | } |
7cbae20a PR |
951 | } |
952 | } | |
6336e12b | 953 | |
7cbae20a PR |
954 | /* |
955 | * Process all neighbors associated with a local MAC upon the MAC being | |
956 | * deleted. | |
957 | */ | |
958 | void zebra_evpn_process_neigh_on_local_mac_del(zebra_evpn_t *zevpn, | |
959 | zebra_mac_t *zmac) | |
960 | { | |
961 | zebra_neigh_t *n = NULL; | |
962 | struct listnode *node = NULL; | |
6336e12b | 963 | |
7cbae20a | 964 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
965 | zlog_debug("Processing neighbors on local MAC %pEA DEL, VNI %u", |
966 | &zmac->macaddr, zevpn->vni); | |
6336e12b | 967 | |
7cbae20a PR |
968 | /* Walk all local neighbors and mark as inactive and inform |
969 | * BGP, if needed. | |
970 | * TBD: There is currently no handling for remote neighbors. We | |
971 | * don't expect them to exist, if they do, do we install the MAC | |
972 | * as a remote MAC and the neighbor as remote? | |
973 | */ | |
974 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
975 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
976 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) { | |
977 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
978 | n->loc_seq = 0; | |
979 | zebra_evpn_neigh_send_del_to_client( | |
980 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
981 | ZEBRA_NEIGH_ACTIVE, false /*force*/); | |
982 | } | |
983 | } | |
6336e12b | 984 | } |
6336e12b PR |
985 | } |
986 | ||
7cbae20a PR |
987 | /* |
988 | * Process all neighbors associated with a MAC upon the MAC being remotely | |
989 | * learnt. | |
990 | */ | |
991 | void zebra_evpn_process_neigh_on_remote_mac_add(zebra_evpn_t *zevpn, | |
992 | zebra_mac_t *zmac) | |
6336e12b | 993 | { |
7cbae20a PR |
994 | zebra_neigh_t *n = NULL; |
995 | struct listnode *node = NULL; | |
6336e12b | 996 | |
7cbae20a | 997 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
998 | zlog_debug("Processing neighbors on remote MAC %pEA ADD, VNI %u", |
999 | &zmac->macaddr, zevpn->vni); | |
6336e12b | 1000 | |
7cbae20a PR |
1001 | /* Walk all local neighbors and mark as inactive and inform |
1002 | * BGP, if needed. | |
1003 | */ | |
1004 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
1005 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
1006 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) { | |
1007 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
1008 | n->loc_seq = 0; | |
1009 | zebra_evpn_neigh_send_del_to_client( | |
1010 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
1011 | ZEBRA_NEIGH_ACTIVE, false /* force */); | |
1012 | } | |
1013 | } | |
1014 | } | |
6336e12b PR |
1015 | } |
1016 | ||
7cbae20a PR |
1017 | /* |
1018 | * Process all neighbors associated with a remote MAC upon the MAC being | |
1019 | * deleted. | |
1020 | */ | |
1021 | void zebra_evpn_process_neigh_on_remote_mac_del(zebra_evpn_t *zevpn, | |
1022 | zebra_mac_t *zmac) | |
6336e12b | 1023 | { |
7cbae20a | 1024 | /* NOTE: Currently a NO-OP. */ |
6336e12b PR |
1025 | } |
1026 | ||
7cbae20a PR |
1027 | static inline void zebra_evpn_local_neigh_update_log( |
1028 | const char *pfx, zebra_neigh_t *n, bool is_router, bool local_inactive, | |
1029 | bool old_bgp_ready, bool new_bgp_ready, bool inform_dataplane, | |
1030 | bool inform_bgp, const char *sfx) | |
1031 | { | |
7cbae20a | 1032 | if (!IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
6336e12b PR |
1033 | return; |
1034 | ||
ef7b8be4 DL |
1035 | zlog_debug("%s neigh vni %u ip %pIA mac %pEA f 0x%x%s%s%s%s%s%s %s", pfx, |
1036 | n->zevpn->vni, &n->ip, &n->emac, n->flags, | |
7cbae20a PR |
1037 | is_router ? " router" : "", |
1038 | local_inactive ? " local-inactive" : "", | |
1039 | old_bgp_ready ? " old_bgp_ready" : "", | |
1040 | new_bgp_ready ? " new_bgp_ready" : "", | |
1041 | inform_dataplane ? " inform_dp" : "", | |
1042 | inform_bgp ? " inform_bgp" : "", sfx); | |
1043 | } | |
1044 | ||
1045 | /* As part Duplicate Address Detection (DAD) for IP mobility | |
1046 | * MAC binding changes, ensure to inherit duplicate flag | |
1047 | * from MAC. | |
1048 | */ | |
036daaca PR |
1049 | static int zebra_evpn_ip_inherit_dad_from_mac(struct zebra_vrf *zvrf, |
1050 | zebra_mac_t *old_zmac, | |
1051 | zebra_mac_t *new_zmac, | |
1052 | zebra_neigh_t *nbr) | |
7cbae20a PR |
1053 | { |
1054 | bool is_old_mac_dup = false; | |
1055 | bool is_new_mac_dup = false; | |
6336e12b | 1056 | |
b2ee2b71 | 1057 | if (!zebra_evpn_do_dup_addr_detect(zvrf)) |
7cbae20a PR |
1058 | return 0; |
1059 | /* Check old or new MAC is detected as duplicate | |
1060 | * mark this neigh as duplicate | |
1061 | */ | |
1062 | if (old_zmac) | |
1063 | is_old_mac_dup = | |
1064 | CHECK_FLAG(old_zmac->flags, ZEBRA_MAC_DUPLICATE); | |
1065 | if (new_zmac) | |
1066 | is_new_mac_dup = | |
1067 | CHECK_FLAG(new_zmac->flags, ZEBRA_MAC_DUPLICATE); | |
1068 | /* Old and/or new MAC can be in duplicate state, | |
1069 | * based on that IP/Neigh Inherits the flag. | |
1070 | * If New MAC is marked duplicate, inherit to the IP. | |
1071 | * If old MAC is duplicate but new MAC is not, clear | |
1072 | * duplicate flag for IP and reset detection params | |
1073 | * and let IP DAD retrigger. | |
6336e12b | 1074 | */ |
7cbae20a PR |
1075 | if (is_new_mac_dup && !CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) { |
1076 | SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1077 | /* Capture Duplicate detection time */ | |
1078 | nbr->dad_dup_detect_time = monotime(NULL); | |
1079 | /* Mark neigh inactive */ | |
1080 | ZEBRA_NEIGH_SET_INACTIVE(nbr); | |
6336e12b | 1081 | |
7cbae20a PR |
1082 | return 1; |
1083 | } else if (is_old_mac_dup && !is_new_mac_dup) { | |
1084 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1085 | nbr->dad_count = 0; | |
1086 | nbr->detect_start_time.tv_sec = 0; | |
1087 | nbr->detect_start_time.tv_usec = 0; | |
1088 | } | |
1089 | return 0; | |
6336e12b PR |
1090 | } |
1091 | ||
7cbae20a | 1092 | static int zebra_evpn_dad_ip_auto_recovery_exp(struct thread *t) |
6336e12b | 1093 | { |
7cbae20a PR |
1094 | struct zebra_vrf *zvrf = NULL; |
1095 | zebra_neigh_t *nbr = NULL; | |
6336e12b | 1096 | zebra_evpn_t *zevpn = NULL; |
6336e12b | 1097 | |
7cbae20a | 1098 | nbr = THREAD_ARG(t); |
6336e12b | 1099 | |
7cbae20a PR |
1100 | /* since this is asynchronous we need sanity checks*/ |
1101 | zvrf = vrf_info_lookup(nbr->zevpn->vrf_id); | |
1102 | if (!zvrf) | |
1103 | return 0; | |
6336e12b | 1104 | |
8b5fdf2e | 1105 | zevpn = zebra_evpn_lookup(nbr->zevpn->vni); |
7cbae20a PR |
1106 | if (!zevpn) |
1107 | return 0; | |
6336e12b | 1108 | |
7cbae20a PR |
1109 | nbr = zebra_evpn_neigh_lookup(zevpn, &nbr->ip); |
1110 | if (!nbr) | |
1111 | return 0; | |
1112 | ||
1113 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1114 | zlog_debug( | |
ef7b8be4 DL |
1115 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x learn count %u vni %u auto recovery expired", |
1116 | __func__, &nbr->emac, &nbr->ip, nbr->flags, | |
7cbae20a | 1117 | nbr->dad_count, zevpn->vni); |
6336e12b | 1118 | |
7cbae20a PR |
1119 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); |
1120 | nbr->dad_count = 0; | |
1121 | nbr->detect_start_time.tv_sec = 0; | |
1122 | nbr->detect_start_time.tv_usec = 0; | |
1123 | nbr->dad_dup_detect_time = 0; | |
1124 | nbr->dad_ip_auto_recovery_timer = NULL; | |
1125 | ZEBRA_NEIGH_SET_ACTIVE(nbr); | |
6336e12b | 1126 | |
7cbae20a PR |
1127 | /* Send to BGP */ |
1128 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) { | |
1129 | zebra_evpn_neigh_send_add_to_client(zevpn->vni, &nbr->ip, | |
1130 | &nbr->emac, nbr->mac, | |
1131 | nbr->flags, nbr->loc_seq); | |
1132 | } else if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) { | |
1133 | zebra_evpn_rem_neigh_install(zevpn, nbr, false /*was_static*/); | |
1134 | } | |
6336e12b | 1135 | |
7cbae20a PR |
1136 | return 0; |
1137 | } | |
6336e12b | 1138 | |
036daaca PR |
1139 | static void |
1140 | zebra_evpn_dup_addr_detect_for_neigh(struct zebra_vrf *zvrf, zebra_neigh_t *nbr, | |
1141 | struct in_addr vtep_ip, bool do_dad, | |
1142 | bool *is_dup_detect, bool is_local) | |
7cbae20a PR |
1143 | { |
1144 | ||
1145 | struct timeval elapsed = {0, 0}; | |
7cbae20a | 1146 | bool reset_params = false; |
6336e12b | 1147 | |
b2ee2b71 | 1148 | if (!zebra_evpn_do_dup_addr_detect(zvrf)) |
7cbae20a PR |
1149 | return; |
1150 | ||
1151 | /* IP is detected as duplicate or inherit dup | |
1152 | * state, hold on to install as remote entry | |
1153 | * only if freeze is enabled. | |
1154 | */ | |
1155 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) { | |
6336e12b PR |
1156 | if (IS_ZEBRA_DEBUG_VXLAN) |
1157 | zlog_debug( | |
ef7b8be4 DL |
1158 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x skip installing, learn count %u recover time %u", |
1159 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a PR |
1160 | nbr->flags, nbr->dad_count, |
1161 | zvrf->dad_freeze_time); | |
6336e12b | 1162 | |
7cbae20a PR |
1163 | if (zvrf->dad_freeze) |
1164 | *is_dup_detect = true; | |
6336e12b | 1165 | |
7cbae20a PR |
1166 | /* warn-only action, neigh will be installed. |
1167 | * freeze action, it wil not be installed. | |
6336e12b | 1168 | */ |
7cbae20a PR |
1169 | return; |
1170 | } | |
6336e12b | 1171 | |
7cbae20a PR |
1172 | if (!do_dad) |
1173 | return; | |
6336e12b | 1174 | |
7cbae20a PR |
1175 | /* Check if detection time (M-secs) expired. |
1176 | * Reset learn count and detection start time. | |
1177 | * During remote mac add, count should already be 1 | |
1178 | * via local learning. | |
1179 | */ | |
1180 | monotime_since(&nbr->detect_start_time, &elapsed); | |
1181 | reset_params = (elapsed.tv_sec > zvrf->dad_time); | |
6336e12b | 1182 | |
7cbae20a PR |
1183 | if (is_local && !reset_params) { |
1184 | /* RFC-7432: A PE/VTEP that detects a MAC mobility | |
1185 | * event via LOCAL learning starts an M-second timer. | |
1186 | * | |
1187 | * NOTE: This is the START of the probe with count is | |
1188 | * 0 during LOCAL learn event. | |
1189 | */ | |
1190 | reset_params = !nbr->dad_count; | |
6336e12b PR |
1191 | } |
1192 | ||
7cbae20a PR |
1193 | if (reset_params) { |
1194 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1195 | zlog_debug( | |
ef7b8be4 DL |
1196 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x detection time passed, reset learn count %u", |
1197 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a PR |
1198 | nbr->flags, nbr->dad_count); |
1199 | /* Reset learn count but do not start detection | |
1200 | * during REMOTE learn event. | |
1201 | */ | |
1202 | nbr->dad_count = 0; | |
1203 | /* Start dup. addr detection (DAD) start time, | |
1204 | * ONLY during LOCAL learn. | |
1205 | */ | |
1206 | if (is_local) | |
1207 | monotime(&nbr->detect_start_time); | |
6336e12b | 1208 | |
7cbae20a PR |
1209 | } else if (!is_local) { |
1210 | /* For REMOTE IP/Neigh, increment detection count | |
1211 | * ONLY while in probe window, once window passed, | |
1212 | * next local learn event should trigger DAD. | |
1213 | */ | |
1214 | nbr->dad_count++; | |
6336e12b PR |
1215 | } |
1216 | ||
7cbae20a PR |
1217 | /* For LOCAL IP/Neigh learn event, once count is reset above via either |
1218 | * initial/start detection time or passed the probe time, the count | |
1219 | * needs to be incremented. | |
1220 | */ | |
1221 | if (is_local) | |
1222 | nbr->dad_count++; | |
6336e12b | 1223 | |
7cbae20a PR |
1224 | if (nbr->dad_count >= zvrf->dad_max_moves) { |
1225 | flog_warn( | |
1226 | EC_ZEBRA_DUP_IP_DETECTED, | |
ef7b8be4 DL |
1227 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during %s VTEP %pI4", |
1228 | nbr->zevpn->vni, &nbr->emac, &nbr->ip, | |
7cbae20a | 1229 | is_local ? "local update, last" : "remote update, from", |
9bcef951 | 1230 | &vtep_ip); |
6336e12b | 1231 | |
7cbae20a | 1232 | SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); |
6336e12b | 1233 | |
7cbae20a PR |
1234 | /* Capture Duplicate detection time */ |
1235 | nbr->dad_dup_detect_time = monotime(NULL); | |
6336e12b | 1236 | |
7cbae20a PR |
1237 | /* Start auto recovery timer for this IP */ |
1238 | THREAD_OFF(nbr->dad_ip_auto_recovery_timer); | |
1239 | if (zvrf->dad_freeze && zvrf->dad_freeze_time) { | |
1240 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1241 | zlog_debug( | |
ef7b8be4 DL |
1242 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x auto recovery time %u start", |
1243 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a | 1244 | nbr->flags, zvrf->dad_freeze_time); |
6336e12b | 1245 | |
7cbae20a PR |
1246 | thread_add_timer(zrouter.master, |
1247 | zebra_evpn_dad_ip_auto_recovery_exp, | |
1248 | nbr, zvrf->dad_freeze_time, | |
1249 | &nbr->dad_ip_auto_recovery_timer); | |
1250 | } | |
1251 | if (zvrf->dad_freeze) | |
1252 | *is_dup_detect = true; | |
1253 | } | |
6336e12b PR |
1254 | } |
1255 | ||
7cbae20a PR |
1256 | int zebra_evpn_local_neigh_update(zebra_evpn_t *zevpn, struct interface *ifp, |
1257 | struct ipaddr *ip, struct ethaddr *macaddr, | |
1258 | bool is_router, bool local_inactive, | |
1259 | bool dp_static) | |
6336e12b | 1260 | { |
7cbae20a PR |
1261 | struct zebra_vrf *zvrf; |
1262 | zebra_neigh_t *n = NULL; | |
1263 | zebra_mac_t *zmac = NULL, *old_zmac = NULL; | |
1264 | uint32_t old_mac_seq = 0, mac_new_seq = 0; | |
1265 | bool upd_mac_seq = false; | |
1266 | bool neigh_mac_change = false; | |
1267 | bool neigh_on_hold = false; | |
1268 | bool neigh_was_remote = false; | |
1269 | bool do_dad = false; | |
1270 | struct in_addr vtep_ip = {.s_addr = 0}; | |
1271 | bool inform_dataplane = false; | |
1272 | bool created = false; | |
1273 | bool new_static = false; | |
1274 | bool old_bgp_ready = false; | |
1275 | bool new_bgp_ready; | |
6336e12b | 1276 | |
7cbae20a PR |
1277 | /* Check if the MAC exists. */ |
1278 | zmac = zebra_evpn_mac_lookup(zevpn, macaddr); | |
1279 | if (!zmac) { | |
1280 | /* create a dummy MAC if the MAC is not already present */ | |
6336e12b | 1281 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
1282 | zlog_debug("AUTO MAC %pEA created for neigh %pIA on VNI %u", |
1283 | macaddr, ip, zevpn->vni); | |
6336e12b | 1284 | |
7cbae20a PR |
1285 | zmac = zebra_evpn_mac_add(zevpn, macaddr); |
1286 | if (!zmac) { | |
ef7b8be4 | 1287 | zlog_debug("Failed to add MAC %pEA VNI %u", macaddr, |
7cbae20a PR |
1288 | zevpn->vni); |
1289 | return -1; | |
1290 | } | |
6336e12b | 1291 | |
8b07f173 | 1292 | zebra_evpn_mac_clear_fwd_info(zmac); |
7cbae20a PR |
1293 | memset(&zmac->flags, 0, sizeof(uint32_t)); |
1294 | SET_FLAG(zmac->flags, ZEBRA_MAC_AUTO); | |
1295 | } else { | |
1296 | if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) { | |
1297 | /* | |
1298 | * We don't change the MAC to local upon a neighbor | |
1299 | * learn event, we wait for the explicit local MAC | |
1300 | * learn. However, we have to compute its sequence | |
1301 | * number in preparation for when it actually turns | |
1302 | * local. | |
1303 | */ | |
1304 | upd_mac_seq = true; | |
1305 | } | |
1306 | } | |
6336e12b | 1307 | |
7cbae20a PR |
1308 | zvrf = vrf_info_lookup(zevpn->vxlan_if->vrf_id); |
1309 | if (!zvrf) { | |
1310 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1311 | zlog_debug(" Unable to find vrf for: %d", | |
1312 | zevpn->vxlan_if->vrf_id); | |
1313 | return -1; | |
1314 | } | |
6336e12b | 1315 | |
7cbae20a PR |
1316 | /* Check if the neighbor exists. */ |
1317 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
1318 | if (!n) { | |
1319 | /* New neighbor - create */ | |
1320 | n = zebra_evpn_neigh_add(zevpn, ip, macaddr, zmac, 0); | |
1321 | if (!n) { | |
1322 | flog_err( | |
1323 | EC_ZEBRA_MAC_ADD_FAILED, | |
ef7b8be4 DL |
1324 | "Failed to add neighbor %pIA MAC %pEA intf %s(%u) -> VNI %u", |
1325 | ip, macaddr, ifp->name, ifp->ifindex, | |
1326 | zevpn->vni); | |
7cbae20a PR |
1327 | return -1; |
1328 | } | |
1329 | /* Set "local" forwarding info. */ | |
1330 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
1331 | n->ifindex = ifp->ifindex; | |
1332 | created = true; | |
6336e12b | 1333 | } else { |
7cbae20a PR |
1334 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
1335 | bool mac_different; | |
1336 | bool cur_is_router; | |
1337 | bool old_local_inactive; | |
6336e12b | 1338 | |
7cbae20a PR |
1339 | old_local_inactive = !!CHECK_FLAG( |
1340 | n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
6336e12b | 1341 | |
7cbae20a | 1342 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); |
6336e12b | 1343 | |
7cbae20a PR |
1344 | /* Note any changes and see if of interest to BGP. */ |
1345 | mac_different = !!memcmp(&n->emac, macaddr, ETH_ALEN); | |
1346 | cur_is_router = | |
1347 | !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1348 | new_static = zebra_evpn_neigh_is_static(n); | |
1349 | if (!mac_different && is_router == cur_is_router | |
1350 | && old_local_inactive == local_inactive | |
1351 | && dp_static != new_static) { | |
1352 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1353 | zlog_debug( | |
1354 | " Ignoring entry mac is the same and is_router == cur_is_router"); | |
1355 | n->ifindex = ifp->ifindex; | |
1356 | return 0; | |
1357 | } | |
6336e12b | 1358 | |
7cbae20a PR |
1359 | old_zmac = n->mac; |
1360 | if (!mac_different) { | |
1361 | /* XXX - cleanup this code duplication */ | |
1362 | bool is_neigh_freezed = false; | |
6336e12b | 1363 | |
7cbae20a PR |
1364 | /* Only the router flag has changed. */ |
1365 | if (is_router) | |
1366 | SET_FLAG(n->flags, | |
1367 | ZEBRA_NEIGH_ROUTER_FLAG); | |
1368 | else | |
1369 | UNSET_FLAG(n->flags, | |
1370 | ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 1371 | |
7cbae20a PR |
1372 | if (local_inactive) |
1373 | SET_FLAG(n->flags, | |
1374 | ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1375 | else | |
1376 | UNSET_FLAG(n->flags, | |
1377 | ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1378 | new_bgp_ready = | |
1379 | zebra_evpn_neigh_is_ready_for_bgp(n); | |
6336e12b | 1380 | |
7c0e4dc6 AK |
1381 | if (dp_static != new_static) |
1382 | inform_dataplane = true; | |
1383 | ||
7cbae20a PR |
1384 | /* Neigh is in freeze state and freeze action |
1385 | * is enabled, do not send update to client. | |
1386 | */ | |
1387 | is_neigh_freezed = | |
b2ee2b71 | 1388 | (zebra_evpn_do_dup_addr_detect(zvrf) |
7cbae20a PR |
1389 | && zvrf->dad_freeze |
1390 | && CHECK_FLAG(n->flags, | |
1391 | ZEBRA_NEIGH_DUPLICATE)); | |
6336e12b | 1392 | |
7cbae20a PR |
1393 | zebra_evpn_local_neigh_update_log( |
1394 | "local", n, is_router, local_inactive, | |
1395 | old_bgp_ready, new_bgp_ready, false, | |
1396 | false, "flag-update"); | |
6336e12b | 1397 | |
7c0e4dc6 AK |
1398 | if (inform_dataplane) |
1399 | zebra_evpn_sync_neigh_dp_install( | |
1400 | n, false /* set_inactive */, | |
1401 | false /* force_clear_static */, | |
1402 | __func__); | |
1403 | ||
7cbae20a PR |
1404 | /* if the neigh can no longer be advertised |
1405 | * remove it from bgp | |
1406 | */ | |
1407 | if (!is_neigh_freezed) { | |
1408 | zebra_evpn_neigh_send_add_del_to_client( | |
1409 | n, old_bgp_ready, | |
1410 | new_bgp_ready); | |
1411 | } else { | |
1412 | if (IS_ZEBRA_DEBUG_VXLAN | |
1413 | && IS_ZEBRA_NEIGH_ACTIVE(n)) | |
1414 | zlog_debug( | |
1415 | " Neighbor active and frozen"); | |
1416 | } | |
1417 | return 0; | |
1418 | } | |
6336e12b | 1419 | |
7cbae20a PR |
1420 | /* The MAC has changed, need to issue a delete |
1421 | * first as this means a different MACIP route. | |
1422 | * Also, need to do some unlinking/relinking. | |
1423 | * We also need to update the MAC's sequence number | |
1424 | * in different situations. | |
1425 | */ | |
1426 | if (old_bgp_ready) { | |
1427 | zebra_evpn_neigh_send_del_to_client( | |
1428 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
1429 | n->state, false /*force*/); | |
1430 | old_bgp_ready = false; | |
1431 | } | |
1432 | if (old_zmac) { | |
1433 | old_mac_seq = CHECK_FLAG(old_zmac->flags, | |
1434 | ZEBRA_MAC_REMOTE) | |
1435 | ? old_zmac->rem_seq | |
1436 | : old_zmac->loc_seq; | |
1437 | neigh_mac_change = upd_mac_seq = true; | |
1438 | zebra_evpn_local_neigh_deref_mac( | |
1439 | n, true /* send_mac_update */); | |
1440 | } | |
6336e12b | 1441 | |
7cbae20a PR |
1442 | /* if mac changes abandon peer flags and tell |
1443 | * dataplane to clear the static flag | |
1444 | */ | |
1445 | if (zebra_evpn_neigh_clear_sync_info(n)) | |
1446 | inform_dataplane = true; | |
1447 | /* Update the forwarding info. */ | |
1448 | n->ifindex = ifp->ifindex; | |
1449 | ||
1450 | /* Link to new MAC */ | |
1451 | zebra_evpn_local_neigh_ref_mac( | |
1452 | n, macaddr, zmac, true /* send_mac_update */); | |
1453 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1454 | /* | |
1455 | * Neighbor has moved from remote to local. Its | |
1456 | * MAC could have also changed as part of the move. | |
1457 | */ | |
1458 | if (memcmp(n->emac.octet, macaddr->octet, ETH_ALEN) | |
1459 | != 0) { | |
1460 | old_zmac = n->mac; | |
1461 | if (old_zmac) { | |
1462 | old_mac_seq = | |
1463 | CHECK_FLAG(old_zmac->flags, | |
1464 | ZEBRA_MAC_REMOTE) | |
1465 | ? old_zmac->rem_seq | |
1466 | : old_zmac->loc_seq; | |
1467 | neigh_mac_change = upd_mac_seq = true; | |
1468 | zebra_evpn_local_neigh_deref_mac( | |
1469 | n, true /* send_update */); | |
1470 | } | |
6336e12b | 1471 | |
7cbae20a PR |
1472 | /* Link to new MAC */ |
1473 | zebra_evpn_local_neigh_ref_mac( | |
1474 | n, macaddr, zmac, true /*send_update*/); | |
1475 | } | |
1476 | /* Based on Mobility event Scenario-B from the | |
1477 | * draft, neigh's previous state was remote treat this | |
1478 | * event for DAD. | |
1479 | */ | |
1480 | neigh_was_remote = true; | |
1481 | vtep_ip = n->r_vtep_ip; | |
1482 | /* Mark appropriately */ | |
1483 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
1484 | n->r_vtep_ip.s_addr = INADDR_ANY; | |
1485 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
1486 | n->ifindex = ifp->ifindex; | |
6336e12b PR |
1487 | } |
1488 | } | |
1489 | ||
7cbae20a PR |
1490 | /* If MAC was previously remote, or the neighbor had a different |
1491 | * MAC earlier, recompute the sequence number. | |
1492 | */ | |
1493 | if (upd_mac_seq) { | |
1494 | uint32_t seq1, seq2; | |
6336e12b | 1495 | |
7cbae20a PR |
1496 | seq1 = CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE) |
1497 | ? zmac->rem_seq + 1 | |
1498 | : zmac->loc_seq; | |
1499 | seq2 = neigh_mac_change ? old_mac_seq + 1 : 0; | |
1500 | mac_new_seq = zmac->loc_seq < MAX(seq1, seq2) ? MAX(seq1, seq2) | |
1501 | : zmac->loc_seq; | |
1502 | } | |
6336e12b | 1503 | |
7cbae20a PR |
1504 | if (local_inactive) |
1505 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1506 | else | |
1507 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1508 | ||
1509 | /* Mark Router flag (R-bit) */ | |
1510 | if (is_router) | |
1511 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1512 | else | |
1513 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1514 | ||
7c0e4dc6 AK |
1515 | /* if zebra and dataplane don't agree this is a sync entry |
1516 | * re-install in the dataplane */ | |
1517 | new_static = zebra_evpn_neigh_is_static(n); | |
1518 | if (dp_static != new_static) | |
1519 | inform_dataplane = true; | |
7cbae20a PR |
1520 | |
1521 | /* Check old and/or new MAC detected as duplicate mark | |
1522 | * the neigh as duplicate | |
1523 | */ | |
1524 | if (zebra_evpn_ip_inherit_dad_from_mac(zvrf, old_zmac, zmac, n)) { | |
1525 | flog_warn( | |
1526 | EC_ZEBRA_DUP_IP_INHERIT_DETECTED, | |
ef7b8be4 DL |
1527 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during local update, inherit duplicate from MAC", |
1528 | zevpn->vni, macaddr, &n->ip); | |
7cbae20a | 1529 | } |
6336e12b | 1530 | |
7cbae20a PR |
1531 | /* For IP Duplicate Address Detection (DAD) is trigger, |
1532 | * when the event is extended mobility based on scenario-B | |
1533 | * from the draft, IP/Neigh's MAC binding changed and | |
1534 | * neigh's previous state was remote. | |
1535 | */ | |
1536 | if (neigh_mac_change && neigh_was_remote) | |
1537 | do_dad = true; | |
6336e12b | 1538 | |
7cbae20a PR |
1539 | zebra_evpn_dup_addr_detect_for_neigh(zvrf, n, vtep_ip, do_dad, |
1540 | &neigh_on_hold, true); | |
6336e12b | 1541 | |
7cbae20a PR |
1542 | if (inform_dataplane) |
1543 | zebra_evpn_sync_neigh_dp_install(n, false /* set_inactive */, | |
1544 | false /* force_clear_static */, | |
1545 | __func__); | |
6336e12b | 1546 | |
7cbae20a PR |
1547 | /* Before we program this in BGP, we need to check if MAC is locally |
1548 | * learnt. If not, force neighbor to be inactive and reset its seq. | |
1549 | */ | |
1550 | if (!CHECK_FLAG(zmac->flags, ZEBRA_MAC_LOCAL)) { | |
1551 | zebra_evpn_local_neigh_update_log( | |
1552 | "local", n, is_router, local_inactive, false, false, | |
1553 | inform_dataplane, false, "auto-mac"); | |
1554 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
1555 | n->loc_seq = 0; | |
1556 | zmac->loc_seq = mac_new_seq; | |
1557 | return 0; | |
1558 | } | |
6336e12b | 1559 | |
7cbae20a PR |
1560 | zebra_evpn_local_neigh_update_log("local", n, is_router, local_inactive, |
1561 | false, false, inform_dataplane, true, | |
1562 | created ? "created" : "updated"); | |
6336e12b | 1563 | |
7cbae20a PR |
1564 | /* If the MAC's sequence number has changed, inform the MAC and all |
1565 | * neighbors associated with the MAC to BGP, else just inform this | |
1566 | * neighbor. | |
1567 | */ | |
1568 | if (upd_mac_seq && zmac->loc_seq != mac_new_seq) { | |
1569 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1570 | zlog_debug( | |
ef7b8be4 DL |
1571 | "Seq changed for MAC %pEA VNI %u - old %u new %u", |
1572 | macaddr, zevpn->vni, | |
1573 | zmac->loc_seq, mac_new_seq); | |
7cbae20a PR |
1574 | zmac->loc_seq = mac_new_seq; |
1575 | if (zebra_evpn_mac_send_add_to_client(zevpn->vni, macaddr, | |
1576 | zmac->flags, | |
1577 | zmac->loc_seq, zmac->es)) | |
1578 | return -1; | |
1579 | zebra_evpn_process_neigh_on_local_mac_change(zevpn, zmac, 1, | |
1580 | 0 /*es_change*/); | |
1581 | return 0; | |
1582 | } | |
6336e12b | 1583 | |
7cbae20a | 1584 | n->loc_seq = zmac->loc_seq; |
6336e12b | 1585 | |
7cbae20a PR |
1586 | if (!neigh_on_hold) { |
1587 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
1588 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
1589 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
1590 | new_bgp_ready); | |
1591 | } else { | |
1592 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1593 | zlog_debug(" Neighbor on hold not sending"); | |
1594 | } | |
1595 | return 0; | |
1596 | } | |
6336e12b | 1597 | |
7cbae20a PR |
1598 | int zebra_evpn_remote_neigh_update(zebra_evpn_t *zevpn, struct interface *ifp, |
1599 | struct ipaddr *ip, struct ethaddr *macaddr, | |
1600 | uint16_t state) | |
1601 | { | |
7cbae20a PR |
1602 | zebra_neigh_t *n = NULL; |
1603 | zebra_mac_t *zmac = NULL; | |
6336e12b | 1604 | |
7cbae20a PR |
1605 | /* If the neighbor is unknown, there is no further action. */ |
1606 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
1607 | if (!n) | |
1608 | return 0; | |
6336e12b | 1609 | |
7cbae20a PR |
1610 | /* If a remote entry, see if it needs to be refreshed */ |
1611 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1612 | #ifdef GNU_LINUX | |
1613 | if (state & NUD_STALE) | |
1614 | zebra_evpn_rem_neigh_install(zevpn, n, | |
1615 | false /*was_static*/); | |
1616 | #endif | |
6336e12b | 1617 | } else { |
7cbae20a PR |
1618 | /* We got a "remote" neighbor notification for an entry |
1619 | * we think is local. This can happen in a multihoming | |
1620 | * scenario - but only if the MAC is already "remote". | |
1621 | * Just mark our entry as "remote". | |
6336e12b | 1622 | */ |
7cbae20a PR |
1623 | zmac = zebra_evpn_mac_lookup(zevpn, macaddr); |
1624 | if (!zmac || !CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) { | |
1625 | zlog_debug( | |
ef7b8be4 DL |
1626 | "Ignore remote neigh %pIA (MAC %pEA) on L2-VNI %u - MAC unknown or local", |
1627 | &n->ip, macaddr, zevpn->vni); | |
7cbae20a PR |
1628 | return -1; |
1629 | } | |
6336e12b | 1630 | |
7cbae20a PR |
1631 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ALL_LOCAL_FLAGS); |
1632 | SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
1633 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
1634 | n->r_vtep_ip = zmac->fwd_info.r_vtep_ip; | |
6336e12b PR |
1635 | } |
1636 | ||
7cbae20a | 1637 | return 0; |
6336e12b PR |
1638 | } |
1639 | ||
7cbae20a PR |
1640 | /* Notify Neighbor entries to the Client, skips the GW entry */ |
1641 | static void | |
1642 | zebra_evpn_send_neigh_hash_entry_to_client(struct hash_bucket *bucket, | |
1643 | void *arg) | |
6336e12b | 1644 | { |
7cbae20a PR |
1645 | struct mac_walk_ctx *wctx = arg; |
1646 | zebra_neigh_t *zn = bucket->data; | |
1647 | zebra_mac_t *zmac = NULL; | |
6336e12b | 1648 | |
7cbae20a | 1649 | if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_DEF_GW)) |
6336e12b | 1650 | return; |
6336e12b | 1651 | |
7cbae20a PR |
1652 | if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_LOCAL) |
1653 | && IS_ZEBRA_NEIGH_ACTIVE(zn)) { | |
1654 | zmac = zebra_evpn_mac_lookup(wctx->zevpn, &zn->emac); | |
1655 | if (!zmac) | |
1656 | return; | |
6336e12b | 1657 | |
7cbae20a PR |
1658 | zebra_evpn_neigh_send_add_to_client(wctx->zevpn->vni, &zn->ip, |
1659 | &zn->emac, zn->mac, | |
1660 | zn->flags, zn->loc_seq); | |
1661 | } | |
6336e12b PR |
1662 | } |
1663 | ||
7cbae20a PR |
1664 | /* Iterator of a specific EVPN */ |
1665 | void zebra_evpn_send_neigh_to_client(zebra_evpn_t *zevpn) | |
6336e12b | 1666 | { |
7cbae20a | 1667 | struct neigh_walk_ctx wctx; |
6336e12b | 1668 | |
7cbae20a PR |
1669 | memset(&wctx, 0, sizeof(struct neigh_walk_ctx)); |
1670 | wctx.zevpn = zevpn; | |
6336e12b | 1671 | |
7cbae20a PR |
1672 | hash_iterate(zevpn->neigh_table, |
1673 | zebra_evpn_send_neigh_hash_entry_to_client, &wctx); | |
6336e12b PR |
1674 | } |
1675 | ||
7cbae20a | 1676 | void zebra_evpn_clear_dup_neigh_hash(struct hash_bucket *bucket, void *ctxt) |
6336e12b | 1677 | { |
7cbae20a PR |
1678 | struct neigh_walk_ctx *wctx = ctxt; |
1679 | zebra_neigh_t *nbr; | |
1680 | zebra_evpn_t *zevpn; | |
1681 | char buf[INET6_ADDRSTRLEN]; | |
6336e12b | 1682 | |
7cbae20a PR |
1683 | nbr = (zebra_neigh_t *)bucket->data; |
1684 | if (!nbr) | |
1685 | return; | |
6336e12b | 1686 | |
7cbae20a | 1687 | zevpn = wctx->zevpn; |
6336e12b | 1688 | |
7cbae20a PR |
1689 | if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
1690 | return; | |
6336e12b | 1691 | |
7cbae20a PR |
1692 | if (IS_ZEBRA_DEBUG_VXLAN) { |
1693 | ipaddr2str(&nbr->ip, buf, sizeof(buf)); | |
1694 | zlog_debug("%s: clear neigh %s dup state, flags 0x%x seq %u", | |
1695 | __func__, buf, nbr->flags, nbr->loc_seq); | |
1696 | } | |
6336e12b PR |
1697 | |
1698 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1699 | nbr->dad_count = 0; | |
1700 | nbr->detect_start_time.tv_sec = 0; | |
1701 | nbr->detect_start_time.tv_usec = 0; | |
1702 | nbr->dad_dup_detect_time = 0; | |
7cbae20a | 1703 | THREAD_OFF(nbr->dad_ip_auto_recovery_timer); |
6336e12b | 1704 | |
6336e12b | 1705 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) { |
7cbae20a PR |
1706 | zebra_evpn_neigh_send_add_to_client(zevpn->vni, &nbr->ip, |
1707 | &nbr->emac, nbr->mac, | |
1708 | nbr->flags, nbr->loc_seq); | |
1709 | } else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) { | |
6336e12b PR |
1710 | zebra_evpn_rem_neigh_install(zevpn, nbr, false /*was_static*/); |
1711 | } | |
6336e12b PR |
1712 | } |
1713 | ||
7cbae20a PR |
1714 | /* |
1715 | * Print a specific neighbor entry. | |
1716 | */ | |
1717 | void zebra_evpn_print_neigh(zebra_neigh_t *n, void *ctxt, json_object *json) | |
6336e12b | 1718 | { |
7cbae20a PR |
1719 | struct vty *vty; |
1720 | char buf1[ETHER_ADDR_STRLEN]; | |
1721 | char buf2[INET6_ADDRSTRLEN]; | |
9bcef951 | 1722 | char addr_buf[PREFIX_STRLEN]; |
7cbae20a PR |
1723 | const char *type_str; |
1724 | const char *state_str; | |
1725 | bool flags_present = false; | |
1726 | struct zebra_vrf *zvrf = NULL; | |
1727 | struct timeval detect_start_time = {0, 0}; | |
1728 | char timebuf[MONOTIME_STRLEN]; | |
1729 | char thread_buf[THREAD_TIMER_STRLEN]; | |
a05111ba DS |
1730 | time_t uptime; |
1731 | char up_str[MONOTIME_STRLEN]; | |
6336e12b | 1732 | |
7cbae20a PR |
1733 | zvrf = zebra_vrf_get_evpn(); |
1734 | if (!zvrf) | |
1735 | return; | |
6336e12b | 1736 | |
a05111ba DS |
1737 | uptime = monotime(NULL); |
1738 | uptime -= n->uptime; | |
1739 | ||
1740 | frrtime_to_interval(uptime, up_str, sizeof(up_str)); | |
1741 | ||
7cbae20a PR |
1742 | ipaddr2str(&n->ip, buf2, sizeof(buf2)); |
1743 | prefix_mac2str(&n->emac, buf1, sizeof(buf1)); | |
1744 | type_str = CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL) ? "local" : "remote"; | |
1745 | state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive"; | |
1746 | vty = (struct vty *)ctxt; | |
1747 | if (json == NULL) { | |
1748 | bool sync_info = false; | |
6336e12b | 1749 | |
7cbae20a PR |
1750 | vty_out(vty, "IP: %s\n", |
1751 | ipaddr2str(&n->ip, buf2, sizeof(buf2))); | |
1752 | vty_out(vty, " Type: %s\n", type_str); | |
1753 | vty_out(vty, " State: %s\n", state_str); | |
a05111ba | 1754 | vty_out(vty, " Uptime: %s\n", up_str); |
7cbae20a PR |
1755 | vty_out(vty, " MAC: %s\n", |
1756 | prefix_mac2str(&n->emac, buf1, sizeof(buf1))); | |
1757 | vty_out(vty, " Sync-info:"); | |
1758 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) { | |
1759 | vty_out(vty, " local-inactive"); | |
1760 | sync_info = true; | |
1761 | } | |
1762 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY)) { | |
1763 | vty_out(vty, " peer-proxy"); | |
1764 | sync_info = true; | |
1765 | } | |
1766 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) { | |
1767 | vty_out(vty, " peer-active"); | |
1768 | sync_info = true; | |
1769 | } | |
1770 | if (n->hold_timer) { | |
1771 | vty_out(vty, " (ht: %s)", | |
1772 | thread_timer_to_hhmmss(thread_buf, | |
1773 | sizeof(thread_buf), | |
1774 | n->hold_timer)); | |
1775 | sync_info = true; | |
1776 | } | |
1777 | if (!sync_info) | |
1778 | vty_out(vty, " -"); | |
1779 | vty_out(vty, "\n"); | |
1780 | } else { | |
a05111ba | 1781 | json_object_string_add(json, "uptime", up_str); |
7cbae20a PR |
1782 | json_object_string_add(json, "ip", buf2); |
1783 | json_object_string_add(json, "type", type_str); | |
1784 | json_object_string_add(json, "state", state_str); | |
1785 | json_object_string_add(json, "mac", buf1); | |
1786 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) | |
1787 | json_object_boolean_true_add(json, "localInactive"); | |
1788 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY)) | |
1789 | json_object_boolean_true_add(json, "peerProxy"); | |
1790 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
1791 | json_object_boolean_true_add(json, "peerActive"); | |
1792 | if (n->hold_timer) | |
1793 | json_object_string_add( | |
1794 | json, "peerActiveHold", | |
1795 | thread_timer_to_hhmmss(thread_buf, | |
1796 | sizeof(thread_buf), | |
1797 | n->hold_timer)); | |
6336e12b | 1798 | } |
7cbae20a PR |
1799 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { |
1800 | if (n->mac->es) { | |
1801 | if (json) | |
1802 | json_object_string_add(json, "remoteEs", | |
1803 | n->mac->es->esi_str); | |
1804 | else | |
1805 | vty_out(vty, " Remote ES: %s\n", | |
1806 | n->mac->es->esi_str); | |
1807 | } else { | |
1808 | if (json) | |
9bcef951 MS |
1809 | json_object_string_add( |
1810 | json, "remoteVtep", | |
1811 | inet_ntop(AF_INET, &n->r_vtep_ip, | |
1812 | addr_buf, sizeof(addr_buf))); | |
7cbae20a | 1813 | else |
9bcef951 MS |
1814 | vty_out(vty, " Remote VTEP: %pI4\n", |
1815 | &n->r_vtep_ip); | |
7cbae20a | 1816 | } |
6336e12b | 1817 | } |
7cbae20a PR |
1818 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) { |
1819 | if (!json) { | |
1820 | vty_out(vty, " Flags: Default-gateway"); | |
1821 | flags_present = true; | |
1822 | } else | |
1823 | json_object_boolean_true_add(json, "defaultGateway"); | |
6336e12b | 1824 | } |
7cbae20a PR |
1825 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG)) { |
1826 | if (!json) { | |
1827 | vty_out(vty, | |
1828 | flags_present ? " ,Router" : " Flags: Router"); | |
1829 | flags_present = true; | |
1830 | } | |
1831 | } | |
1832 | if (json == NULL) { | |
1833 | if (flags_present) | |
1834 | vty_out(vty, "\n"); | |
1835 | vty_out(vty, " Local Seq: %u Remote Seq: %u\n", n->loc_seq, | |
1836 | n->rem_seq); | |
6336e12b | 1837 | |
7cbae20a PR |
1838 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) { |
1839 | vty_out(vty, " Duplicate, detected at %s", | |
1840 | time_to_string(n->dad_dup_detect_time, | |
1841 | timebuf)); | |
1842 | } else if (n->dad_count) { | |
1843 | monotime_since(&n->detect_start_time, | |
1844 | &detect_start_time); | |
1845 | if (detect_start_time.tv_sec <= zvrf->dad_time) { | |
1846 | time_to_string(n->detect_start_time.tv_sec, | |
1847 | timebuf); | |
1848 | vty_out(vty, | |
1849 | " Duplicate detection started at %s, detection count %u\n", | |
1850 | timebuf, n->dad_count); | |
1851 | } | |
1852 | } | |
1853 | } else { | |
1854 | json_object_int_add(json, "localSequence", n->loc_seq); | |
1855 | json_object_int_add(json, "remoteSequence", n->rem_seq); | |
1856 | json_object_int_add(json, "detectionCount", n->dad_count); | |
1857 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1858 | json_object_boolean_true_add(json, "isDuplicate"); | |
1859 | else | |
1860 | json_object_boolean_false_add(json, "isDuplicate"); | |
1861 | } | |
6336e12b PR |
1862 | } |
1863 | ||
7cbae20a | 1864 | void zebra_evpn_print_neigh_hdr(struct vty *vty, struct neigh_walk_ctx *wctx) |
6336e12b | 1865 | { |
7cbae20a PR |
1866 | vty_out(vty, "Flags: I=local-inactive, P=peer-active, X=peer-proxy\n"); |
1867 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %s\n", -wctx->addr_width, | |
1868 | "Neighbor", "Type", "Flags", "State", "MAC", "Remote ES/VTEP", | |
1869 | "Seq #'s"); | |
6336e12b PR |
1870 | } |
1871 | ||
7cbae20a PR |
1872 | static char *zebra_evpn_print_neigh_flags(zebra_neigh_t *n, char *flags_buf, |
1873 | uint32_t flags_buf_sz) | |
6336e12b | 1874 | { |
7cbae20a PR |
1875 | snprintf(flags_buf, flags_buf_sz, "%s%s%s", |
1876 | (n->flags & ZEBRA_NEIGH_ES_PEER_ACTIVE) ? | |
1877 | "P" : "", | |
1878 | (n->flags & ZEBRA_NEIGH_ES_PEER_PROXY) ? | |
1879 | "X" : "", | |
1880 | (n->flags & ZEBRA_NEIGH_LOCAL_INACTIVE) ? | |
1881 | "I" : ""); | |
6336e12b | 1882 | |
7cbae20a | 1883 | return flags_buf; |
6336e12b PR |
1884 | } |
1885 | ||
7cbae20a PR |
1886 | /* |
1887 | * Print neighbor hash entry - called for display of all neighbors. | |
1888 | */ | |
1889 | void zebra_evpn_print_neigh_hash(struct hash_bucket *bucket, void *ctxt) | |
6336e12b | 1890 | { |
7cbae20a PR |
1891 | struct vty *vty; |
1892 | json_object *json_evpn = NULL, *json_row = NULL; | |
1893 | zebra_neigh_t *n; | |
1894 | char buf1[ETHER_ADDR_STRLEN]; | |
1895 | char buf2[INET6_ADDRSTRLEN]; | |
9bcef951 | 1896 | char addr_buf[PREFIX_STRLEN]; |
7cbae20a PR |
1897 | struct neigh_walk_ctx *wctx = ctxt; |
1898 | const char *state_str; | |
1899 | char flags_buf[6]; | |
6336e12b | 1900 | |
7cbae20a PR |
1901 | vty = wctx->vty; |
1902 | json_evpn = wctx->json; | |
1903 | n = (zebra_neigh_t *)bucket->data; | |
6336e12b | 1904 | |
7cbae20a PR |
1905 | if (json_evpn) |
1906 | json_row = json_object_new_object(); | |
6336e12b | 1907 | |
7cbae20a PR |
1908 | prefix_mac2str(&n->emac, buf1, sizeof(buf1)); |
1909 | ipaddr2str(&n->ip, buf2, sizeof(buf2)); | |
1910 | state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive"; | |
1911 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
1912 | if (wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1913 | return; | |
6336e12b | 1914 | |
7cbae20a PR |
1915 | if (json_evpn == NULL) { |
1916 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %u/%u\n", | |
1917 | -wctx->addr_width, buf2, "local", | |
1918 | zebra_evpn_print_neigh_flags(n, flags_buf, | |
1919 | sizeof(flags_buf)), state_str, buf1, | |
1920 | "", n->loc_seq, n->rem_seq); | |
1921 | } else { | |
1922 | json_object_string_add(json_row, "type", "local"); | |
1923 | json_object_string_add(json_row, "state", state_str); | |
1924 | json_object_string_add(json_row, "mac", buf1); | |
1925 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) | |
1926 | json_object_boolean_true_add(json_row, | |
1927 | "defaultGateway"); | |
1928 | json_object_int_add(json_row, "localSequence", | |
1929 | n->loc_seq); | |
1930 | json_object_int_add(json_row, "remoteSequence", | |
1931 | n->rem_seq); | |
1932 | json_object_int_add(json_row, "detectionCount", | |
1933 | n->dad_count); | |
1934 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1935 | json_object_boolean_true_add(json_row, | |
1936 | "isDuplicate"); | |
1937 | else | |
1938 | json_object_boolean_false_add(json_row, | |
1939 | "isDuplicate"); | |
1940 | } | |
1941 | wctx->count++; | |
1942 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1943 | if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1944 | && !IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip)) | |
6336e12b PR |
1945 | return; |
1946 | ||
7cbae20a PR |
1947 | if (json_evpn == NULL) { |
1948 | if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1949 | && (wctx->count == 0)) | |
1950 | zebra_evpn_print_neigh_hdr(vty, wctx); | |
9bcef951 MS |
1951 | |
1952 | if (n->mac->es == NULL) | |
1953 | inet_ntop(AF_INET, &n->r_vtep_ip, | |
1954 | addr_buf, sizeof(addr_buf)); | |
1955 | ||
7cbae20a PR |
1956 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %u/%u\n", |
1957 | -wctx->addr_width, buf2, "remote", | |
1958 | zebra_evpn_print_neigh_flags(n, flags_buf, | |
1959 | sizeof(flags_buf)), state_str, buf1, | |
9bcef951 | 1960 | n->mac->es ? n->mac->es->esi_str : addr_buf, |
7cbae20a PR |
1961 | n->loc_seq, n->rem_seq); |
1962 | } else { | |
1963 | json_object_string_add(json_row, "type", "remote"); | |
1964 | json_object_string_add(json_row, "state", state_str); | |
1965 | json_object_string_add(json_row, "mac", buf1); | |
1966 | if (n->mac->es) | |
1967 | json_object_string_add(json_row, "remoteEs", | |
1968 | n->mac->es->esi_str); | |
1969 | else | |
9bcef951 MS |
1970 | json_object_string_add( |
1971 | json_row, "remoteVtep", | |
1972 | inet_ntop(AF_INET, &n->r_vtep_ip, | |
1973 | addr_buf, sizeof(addr_buf))); | |
7cbae20a PR |
1974 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) |
1975 | json_object_boolean_true_add(json_row, | |
1976 | "defaultGateway"); | |
1977 | json_object_int_add(json_row, "localSequence", | |
1978 | n->loc_seq); | |
1979 | json_object_int_add(json_row, "remoteSequence", | |
1980 | n->rem_seq); | |
1981 | json_object_int_add(json_row, "detectionCount", | |
1982 | n->dad_count); | |
1983 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1984 | json_object_boolean_true_add(json_row, | |
1985 | "isDuplicate"); | |
1986 | else | |
1987 | json_object_boolean_false_add(json_row, | |
1988 | "isDuplicate"); | |
1989 | } | |
1990 | wctx->count++; | |
6336e12b | 1991 | } |
6336e12b | 1992 | |
7cbae20a PR |
1993 | if (json_evpn) |
1994 | json_object_object_add(json_evpn, buf2, json_row); | |
6336e12b PR |
1995 | } |
1996 | ||
7cbae20a PR |
1997 | /* |
1998 | * Print neighbor hash entry in detail - called for display of all neighbors. | |
1999 | */ | |
2000 | void zebra_evpn_print_neigh_hash_detail(struct hash_bucket *bucket, void *ctxt) | |
6336e12b | 2001 | { |
7cbae20a PR |
2002 | struct vty *vty; |
2003 | json_object *json_evpn = NULL, *json_row = NULL; | |
2004 | zebra_neigh_t *n; | |
2005 | char buf[INET6_ADDRSTRLEN]; | |
2006 | struct neigh_walk_ctx *wctx = ctxt; | |
6336e12b | 2007 | |
7cbae20a PR |
2008 | vty = wctx->vty; |
2009 | json_evpn = wctx->json; | |
2010 | n = (zebra_neigh_t *)bucket->data; | |
2011 | if (!n) | |
2012 | return; | |
6336e12b | 2013 | |
7cbae20a PR |
2014 | ipaddr2str(&n->ip, buf, sizeof(buf)); |
2015 | if (json_evpn) | |
2016 | json_row = json_object_new_object(); | |
6336e12b | 2017 | |
7cbae20a | 2018 | zebra_evpn_print_neigh(n, vty, json_row); |
6336e12b | 2019 | |
7cbae20a PR |
2020 | if (json_evpn) |
2021 | json_object_object_add(json_evpn, buf, json_row); | |
6336e12b PR |
2022 | } |
2023 | ||
7cbae20a | 2024 | void zebra_evpn_print_dad_neigh_hash(struct hash_bucket *bucket, void *ctxt) |
6336e12b | 2025 | { |
7cbae20a | 2026 | zebra_neigh_t *nbr; |
6336e12b | 2027 | |
7cbae20a PR |
2028 | nbr = (zebra_neigh_t *)bucket->data; |
2029 | if (!nbr) | |
2030 | return; | |
6336e12b | 2031 | |
7cbae20a PR |
2032 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
2033 | zebra_evpn_print_neigh_hash(bucket, ctxt); | |
6336e12b PR |
2034 | } |
2035 | ||
7cbae20a PR |
2036 | void zebra_evpn_print_dad_neigh_hash_detail(struct hash_bucket *bucket, |
2037 | void *ctxt) | |
6336e12b | 2038 | { |
7cbae20a | 2039 | zebra_neigh_t *nbr; |
6336e12b | 2040 | |
7cbae20a PR |
2041 | nbr = (zebra_neigh_t *)bucket->data; |
2042 | if (!nbr) | |
2043 | return; | |
6336e12b | 2044 | |
7cbae20a PR |
2045 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
2046 | zebra_evpn_print_neigh_hash_detail(bucket, ctxt); | |
6336e12b | 2047 | } |
036daaca PR |
2048 | |
2049 | void process_neigh_remote_macip_add(zebra_evpn_t *zevpn, struct zebra_vrf *zvrf, | |
2050 | struct ipaddr *ipaddr, zebra_mac_t *mac, | |
2051 | struct in_addr vtep_ip, uint8_t flags, | |
2052 | uint32_t seq) | |
2053 | { | |
2054 | zebra_neigh_t *n; | |
2055 | int update_neigh = 0; | |
036daaca PR |
2056 | zebra_mac_t *old_mac = NULL; |
2057 | bool old_static = false; | |
2058 | bool do_dad = false; | |
2059 | bool is_dup_detect = false; | |
2060 | bool is_router; | |
2061 | ||
2bdd4461 | 2062 | assert(mac); |
036daaca PR |
2063 | is_router = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); |
2064 | ||
2065 | /* Check if the remote neighbor itself is unknown or has a | |
2066 | * change. If so, create or update and then install the entry. | |
2067 | */ | |
2068 | n = zebra_evpn_neigh_lookup(zevpn, ipaddr); | |
2069 | if (!n || !CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE) | |
2070 | || is_router != !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG) | |
2071 | || (memcmp(&n->emac, &mac->macaddr, sizeof(struct ethaddr)) != 0) | |
2072 | || !IPV4_ADDR_SAME(&n->r_vtep_ip, &vtep_ip) || seq != n->rem_seq) | |
2073 | update_neigh = 1; | |
2074 | ||
2075 | if (update_neigh) { | |
2076 | if (!n) { | |
2077 | n = zebra_evpn_neigh_add(zevpn, ipaddr, &mac->macaddr, | |
2078 | mac, 0); | |
2079 | if (!n) { | |
2080 | zlog_warn( | |
ef7b8be4 DL |
2081 | "Failed to add Neigh %pIA MAC %pEA VNI %u Remote VTEP %pI4", |
2082 | ipaddr, &mac->macaddr, zevpn->vni, | |
2083 | &vtep_ip); | |
036daaca PR |
2084 | return; |
2085 | } | |
2086 | ||
2087 | } else { | |
036daaca PR |
2088 | /* When host moves but changes its (MAC,IP) |
2089 | * binding, BGP may install a MACIP entry that | |
2090 | * corresponds to "older" location of the host | |
2091 | * in transient situations (because {IP1,M1} | |
2092 | * is a different route from {IP1,M2}). Check | |
2093 | * the sequence number and ignore this update | |
2094 | * if appropriate. | |
2095 | */ | |
16de1338 AK |
2096 | |
2097 | if (!zebra_evpn_neigh_is_bgp_seq_ok( | |
2098 | zevpn, n, &mac->macaddr, seq, false)) | |
036daaca | 2099 | return; |
036daaca PR |
2100 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
2101 | old_static = zebra_evpn_neigh_is_static(n); | |
2102 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
2103 | zlog_debug( | |
ef7b8be4 DL |
2104 | "sync->remote neigh vni %u ip %pIA mac %pEA seq %d f0x%x", |
2105 | n->zevpn->vni, &n->ip, &n->emac, | |
036daaca PR |
2106 | seq, n->flags); |
2107 | zebra_evpn_neigh_clear_sync_info(n); | |
2108 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) | |
fb8f609d AK |
2109 | zebra_evpn_neigh_send_del_to_client( |
2110 | zevpn->vni, &n->ip, &n->emac, | |
2111 | n->flags, n->state, | |
2112 | false /*force*/); | |
036daaca PR |
2113 | } |
2114 | if (memcmp(&n->emac, &mac->macaddr, | |
2115 | sizeof(struct ethaddr)) | |
2116 | != 0) { | |
2117 | /* update neigh list for macs */ | |
2118 | old_mac = | |
2119 | zebra_evpn_mac_lookup(zevpn, &n->emac); | |
2120 | if (old_mac) { | |
2121 | listnode_delete(old_mac->neigh_list, n); | |
2122 | n->mac = NULL; | |
2123 | zebra_evpn_deref_ip2mac(zevpn, old_mac); | |
2124 | } | |
2125 | n->mac = mac; | |
2126 | listnode_add_sort(mac->neigh_list, n); | |
2127 | memcpy(&n->emac, &mac->macaddr, ETH_ALEN); | |
2128 | ||
2129 | /* Check Neigh's curent state is local | |
2130 | * (this is the case where neigh/host has moved | |
2131 | * from L->R) and check previous detction | |
2132 | * started via local learning. | |
2133 | * | |
2134 | * RFC-7432: A PE/VTEP that detects a MAC | |
2135 | * mobilit event via local learning starts | |
2136 | * an M-second timer. | |
2137 | * VTEP-IP or seq. change along is not | |
2138 | * considered for dup. detection. | |
2139 | * | |
2140 | * Mobilty event scenario-B IP-MAC binding | |
2141 | * changed. | |
2142 | */ | |
2143 | if ((!CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) | |
2144 | && n->dad_count) | |
2145 | do_dad = true; | |
2146 | } | |
2147 | } | |
2148 | ||
2149 | /* Set "remote" forwarding info. */ | |
2150 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ALL_LOCAL_FLAGS); | |
2151 | n->r_vtep_ip = vtep_ip; | |
2152 | SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
2153 | ||
2154 | /* Set router flag (R-bit) to this Neighbor entry */ | |
2155 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG)) | |
2156 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2157 | else | |
2158 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2159 | ||
2160 | /* Check old or new MAC detected as duplicate, | |
2161 | * inherit duplicate flag to this neigh. | |
2162 | */ | |
2163 | if (zebra_evpn_ip_inherit_dad_from_mac(zvrf, old_mac, mac, n)) { | |
2164 | flog_warn( | |
2165 | EC_ZEBRA_DUP_IP_INHERIT_DETECTED, | |
ef7b8be4 DL |
2166 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during remote update, inherit duplicate from MAC", |
2167 | zevpn->vni, &mac->macaddr, &n->ip); | |
036daaca PR |
2168 | } |
2169 | ||
2170 | /* Check duplicate address detection for IP */ | |
2171 | zebra_evpn_dup_addr_detect_for_neigh( | |
2172 | zvrf, n, n->r_vtep_ip, do_dad, &is_dup_detect, false); | |
2173 | /* Install the entry. */ | |
2174 | if (!is_dup_detect) | |
2175 | zebra_evpn_rem_neigh_install(zevpn, n, old_static); | |
2176 | } | |
2177 | ||
036daaca PR |
2178 | /* Update seq number. */ |
2179 | n->rem_seq = seq; | |
2180 | } | |
224315f3 PR |
2181 | |
2182 | int zebra_evpn_neigh_gw_macip_add(struct interface *ifp, zebra_evpn_t *zevpn, | |
2183 | struct ipaddr *ip, zebra_mac_t *mac) | |
2184 | { | |
2185 | zebra_neigh_t *n; | |
224315f3 | 2186 | |
2bdd4461 | 2187 | assert(mac); |
224315f3 PR |
2188 | |
2189 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
2190 | if (!n) { | |
2191 | n = zebra_evpn_neigh_add(zevpn, ip, &mac->macaddr, mac, 0); | |
2192 | if (!n) { | |
2193 | flog_err( | |
2194 | EC_ZEBRA_MAC_ADD_FAILED, | |
ef7b8be4 DL |
2195 | "Failed to add neighbor %pIA MAC %pEA intf %s(%u) -> VNI %u", |
2196 | ip, &mac->macaddr, | |
224315f3 PR |
2197 | ifp->name, ifp->ifindex, zevpn->vni); |
2198 | return -1; | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | /* Set "local" forwarding info. */ | |
2203 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
2204 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
2205 | memcpy(&n->emac, &mac->macaddr, ETH_ALEN); | |
2206 | n->ifindex = ifp->ifindex; | |
2207 | ||
2208 | /* Only advertise in BGP if the knob is enabled */ | |
2209 | if (advertise_gw_macip_enabled(zevpn)) { | |
2210 | ||
2211 | SET_FLAG(mac->flags, ZEBRA_MAC_DEF_GW); | |
2212 | SET_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW); | |
2213 | /* Set Router flag (R-bit) */ | |
2214 | if (ip->ipa_type == IPADDR_V6) | |
2215 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2216 | ||
2217 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2218 | zlog_debug( | |
ef7b8be4 | 2219 | "SVI %s(%u) L2-VNI %u, sending GW MAC %pEA IP %pIA add to BGP with flags 0x%x", |
224315f3 | 2220 | ifp->name, ifp->ifindex, zevpn->vni, |
ef7b8be4 | 2221 | &mac->macaddr, ip, n->flags); |
224315f3 PR |
2222 | |
2223 | zebra_evpn_neigh_send_add_to_client( | |
2224 | zevpn->vni, ip, &n->emac, n->mac, n->flags, n->loc_seq); | |
2225 | } else if (advertise_svi_macip_enabled(zevpn)) { | |
2226 | ||
2227 | SET_FLAG(n->flags, ZEBRA_NEIGH_SVI_IP); | |
2228 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2229 | zlog_debug( | |
ef7b8be4 | 2230 | "SVI %s(%u) L2-VNI %u, sending SVI MAC %pEA IP %pIA add to BGP with flags 0x%x", |
224315f3 | 2231 | ifp->name, ifp->ifindex, zevpn->vni, |
ef7b8be4 | 2232 | &mac->macaddr, ip, n->flags); |
224315f3 PR |
2233 | |
2234 | zebra_evpn_neigh_send_add_to_client( | |
2235 | zevpn->vni, ip, &n->emac, n->mac, n->flags, n->loc_seq); | |
2236 | } | |
2237 | ||
2238 | return 0; | |
2239 | } | |
32fe7dfd PR |
2240 | |
2241 | void zebra_evpn_neigh_remote_uninstall(zebra_evpn_t *zevpn, | |
2242 | struct zebra_vrf *zvrf, zebra_neigh_t *n, | |
2243 | zebra_mac_t *mac, struct ipaddr *ipaddr) | |
2244 | { | |
32fe7dfd PR |
2245 | if (zvrf->dad_freeze && CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE) |
2246 | && CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE) | |
2247 | && (memcmp(n->emac.octet, mac->macaddr.octet, ETH_ALEN) == 0)) { | |
2248 | struct interface *vlan_if; | |
2249 | ||
2250 | vlan_if = zevpn_map_to_svi(zevpn); | |
2251 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2252 | zlog_debug( | |
ef7b8be4 DL |
2253 | "%s: IP %pIA (flags 0x%x intf %s) is remote and duplicate, read kernel for local entry", |
2254 | __func__, ipaddr, n->flags, | |
2255 | vlan_if ? vlan_if->name : "Unknown"); | |
32fe7dfd PR |
2256 | if (vlan_if) |
2257 | neigh_read_specific_ip(ipaddr, vlan_if); | |
2258 | } | |
2259 | ||
2260 | /* When the MAC changes for an IP, it is possible the | |
2261 | * client may update the new MAC before trying to delete the | |
2262 | * "old" neighbor (as these are two different MACIP routes). | |
2263 | * Do the delete only if the MAC matches. | |
2264 | */ | |
2265 | if (!memcmp(n->emac.octet, mac->macaddr.octet, ETH_ALEN)) { | |
2266 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
2267 | zebra_evpn_sync_neigh_del(n); | |
2268 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
2269 | zebra_evpn_neigh_uninstall(zevpn, n); | |
2270 | zebra_evpn_neigh_del(zevpn, n); | |
2271 | zebra_evpn_deref_ip2mac(zevpn, mac); | |
2272 | } | |
2273 | } | |
2274 | } | |
33064a62 PR |
2275 | |
2276 | int zebra_evpn_neigh_del_ip(zebra_evpn_t *zevpn, struct ipaddr *ip) | |
2277 | { | |
2278 | zebra_neigh_t *n; | |
2279 | zebra_mac_t *zmac; | |
2280 | bool old_bgp_ready; | |
2281 | bool new_bgp_ready; | |
33064a62 PR |
2282 | struct zebra_vrf *zvrf; |
2283 | ||
2284 | /* If entry doesn't exist, nothing to do. */ | |
2285 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
2286 | if (!n) | |
2287 | return 0; | |
2288 | ||
2289 | zmac = zebra_evpn_mac_lookup(zevpn, &n->emac); | |
2290 | if (!zmac) { | |
2291 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2292 | zlog_debug( | |
ef7b8be4 DL |
2293 | "Trying to del a neigh %pIA without a mac %pEA on VNI %u", |
2294 | ip, &n->emac, | |
33064a62 PR |
2295 | zevpn->vni); |
2296 | ||
2297 | return 0; | |
2298 | } | |
2299 | ||
2300 | /* If it is a remote entry, the kernel has aged this out or someone has | |
2301 | * deleted it, it needs to be re-installed as Quagga is the owner. | |
2302 | */ | |
2303 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
2304 | zebra_evpn_rem_neigh_install(zevpn, n, false /*was_static*/); | |
2305 | return 0; | |
2306 | } | |
2307 | ||
2308 | /* if this is a sync entry it cannot be dropped re-install it in | |
2309 | * the dataplane | |
2310 | */ | |
2311 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
2312 | if (zebra_evpn_neigh_is_static(n)) { | |
2313 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
ef7b8be4 DL |
2314 | zlog_debug("re-add sync neigh vni %u ip %pIA mac %pEA 0x%x", |
2315 | n->zevpn->vni, &n->ip, &n->emac, | |
33064a62 PR |
2316 | n->flags); |
2317 | ||
2318 | if (!CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) | |
2319 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
2320 | /* inform-bgp about change in local-activity if any */ | |
2321 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
2322 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
2323 | new_bgp_ready); | |
2324 | ||
2325 | /* re-install the entry in the kernel */ | |
2326 | zebra_evpn_sync_neigh_dp_install(n, false /* set_inactive */, | |
2327 | false /* force_clear_static */, | |
2328 | __func__); | |
2329 | ||
2330 | return 0; | |
2331 | } | |
2332 | ||
2333 | zvrf = vrf_info_lookup(zevpn->vxlan_if->vrf_id); | |
2334 | if (!zvrf) { | |
2335 | zlog_debug("%s: VNI %u vrf lookup failed.", __func__, | |
2336 | zevpn->vni); | |
2337 | return -1; | |
2338 | } | |
2339 | ||
2340 | /* In case of feeze action, if local neigh is in duplicate state, | |
2341 | * Mark the Neigh as inactive before sending delete request to BGPd, | |
2342 | * If BGPd has remote entry, it will re-install | |
2343 | */ | |
2344 | if (zvrf->dad_freeze && CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
2345 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
2346 | ||
2347 | /* Remove neighbor from BGP. */ | |
2348 | zebra_evpn_neigh_send_del_to_client(zevpn->vni, &n->ip, &n->emac, | |
2349 | n->flags, n->state, | |
2350 | false /* force */); | |
2351 | ||
2352 | /* Delete this neighbor entry. */ | |
2353 | zebra_evpn_neigh_del(zevpn, n); | |
2354 | ||
2355 | /* see if the AUTO mac needs to be deleted */ | |
2356 | if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_AUTO) | |
243b74ed | 2357 | && !zebra_evpn_mac_in_use(zmac)) |
33064a62 PR |
2358 | zebra_evpn_mac_del(zevpn, zmac); |
2359 | ||
2360 | return 0; | |
2361 | } |