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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 | { |
72de4110 | 51 | const struct zebra_neigh *n = p; |
7cbae20a | 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 | { | |
72de4110 DS |
66 | const struct zebra_neigh *n1 = p1; |
67 | const struct zebra_neigh *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 | |
60cda04d | 75 | return ipaddr_cmp(&n1->ip, &n2->ip) == 0; |
6336e12b | 76 | } |
6336e12b | 77 | |
7cbae20a | 78 | int neigh_list_cmp(void *p1, void *p2) |
6336e12b | 79 | { |
72de4110 DS |
80 | const struct zebra_neigh *n1 = p1; |
81 | const struct zebra_neigh *n2 = p2; | |
6336e12b | 82 | |
60cda04d | 83 | return ipaddr_cmp(&n1->ip, &n2->ip); |
7cbae20a | 84 | } |
6336e12b | 85 | |
7cbae20a PR |
86 | struct hash *zebra_neigh_db_create(const char *desc) |
87 | { | |
da55bcbc | 88 | return hash_create_size(8, neigh_hash_keymake, neigh_cmp, desc); |
6336e12b PR |
89 | } |
90 | ||
f6371c34 | 91 | uint32_t num_dup_detected_neighs(struct zebra_evpn *zevpn) |
6336e12b PR |
92 | { |
93 | unsigned int i; | |
94 | uint32_t num_neighs = 0; | |
95 | struct hash *hash; | |
96 | struct hash_bucket *hb; | |
72de4110 | 97 | struct zebra_neigh *nbr; |
6336e12b PR |
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) { | |
72de4110 | 104 | nbr = (struct zebra_neigh *)hb->data; |
6336e12b PR |
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 | { |
72de4110 | 120 | struct zebra_neigh *n; |
7cbae20a PR |
121 | char buf[INET6_ADDRSTRLEN]; |
122 | struct neigh_walk_ctx *wctx = ctxt; | |
123 | int width; | |
6336e12b | 124 | |
72de4110 | 125 | n = (struct zebra_neigh *)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 | */ | |
3198b2b3 | 136 | int remote_neigh_count(struct zebra_mac *zmac) |
7cbae20a | 137 | { |
72de4110 | 138 | struct zebra_neigh *n = NULL; |
7cbae20a PR |
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 | */ | |
72de4110 DS |
153 | int zebra_evpn_rem_neigh_install(struct zebra_evpn *zevpn, |
154 | struct zebra_neigh *n, 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 | { |
72de4110 | 182 | struct zebra_neigh *n; |
7cbae20a | 183 | struct neigh_walk_ctx *wctx = ctxt; |
6336e12b | 184 | |
72de4110 | 185 | n = (struct zebra_neigh *)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 | { |
72de4110 DS |
197 | const struct zebra_neigh *tmp_n = p; |
198 | struct zebra_neigh *n; | |
6336e12b | 199 | |
72de4110 | 200 | n = XCALLOC(MTYPE_NEIGH, sizeof(struct zebra_neigh)); |
7cbae20a | 201 | *n = *tmp_n; |
6336e12b | 202 | |
7cbae20a PR |
203 | return ((void *)n); |
204 | } | |
205 | ||
72de4110 | 206 | static void zebra_evpn_local_neigh_ref_mac(struct zebra_neigh *n, |
1a3bd37f | 207 | const struct ethaddr *macaddr, |
3198b2b3 | 208 | struct zebra_mac *mac, |
7cbae20a PR |
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 */ |
72de4110 | 240 | static void zebra_evpn_sync_neigh_dp_install(struct zebra_neigh *n, |
33064a62 PR |
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 | */ |
1a3bd37f MS |
287 | int zebra_evpn_neigh_send_add_to_client(vni_t vni, const struct ipaddr *ip, |
288 | const struct ethaddr *macaddr, | |
3198b2b3 DS |
289 | struct zebra_mac *zmac, |
290 | uint32_t neigh_flags, 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 | ||
72de4110 | 340 | static void zebra_evpn_neigh_send_add_del_to_client(struct zebra_neigh *n, |
33064a62 PR |
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 | */ |
72de4110 | 358 | void zebra_evpn_sync_neigh_static_chg(struct zebra_neigh *n, bool old_n_static, |
7cbae20a PR |
359 | bool new_n_static, bool defer_n_dp, |
360 | bool defer_mac_dp, const char *caller) | |
6336e12b | 361 | { |
3198b2b3 | 362 | struct zebra_mac *mac = n->mac; |
7cbae20a PR |
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 | */ |
cc9f21da | 414 | static void zebra_evpn_neigh_hold_exp_cb(struct thread *t) |
6336e12b | 415 | { |
72de4110 | 416 | struct zebra_neigh *n; |
7cbae20a PR |
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)) | |
cc9f21da | 427 | return; |
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 PR |
451 | } |
452 | ||
72de4110 | 453 | static inline void zebra_evpn_neigh_start_hold_timer(struct zebra_neigh *n) |
6336e12b | 454 | { |
7cbae20a PR |
455 | if (n->hold_timer) |
456 | return; | |
6336e12b | 457 | |
7cbae20a | 458 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
ef7b8be4 DL |
459 | zlog_debug("sync-neigh vni %u ip %pIA mac %pEA 0x%x hold start", |
460 | n->zevpn->vni, &n->ip, &n->emac, n->flags); | |
7cbae20a PR |
461 | thread_add_timer(zrouter.master, zebra_evpn_neigh_hold_exp_cb, n, |
462 | zmh_info->neigh_hold_time, &n->hold_timer); | |
463 | } | |
6336e12b | 464 | |
72de4110 | 465 | static void zebra_evpn_local_neigh_deref_mac(struct zebra_neigh *n, |
7cbae20a PR |
466 | bool send_mac_update) |
467 | { | |
3198b2b3 | 468 | struct zebra_mac *mac = n->mac; |
f6371c34 | 469 | struct zebra_evpn *zevpn = n->zevpn; |
7cbae20a PR |
470 | bool old_static; |
471 | bool new_static; | |
6336e12b | 472 | |
7cbae20a PR |
473 | n->mac = NULL; |
474 | if (!mac) | |
475 | return; | |
6336e12b | 476 | |
7cbae20a PR |
477 | if ((n->flags & ZEBRA_NEIGH_ALL_PEER_FLAGS) && mac->sync_neigh_cnt) { |
478 | old_static = zebra_evpn_mac_is_static(mac); | |
479 | --mac->sync_neigh_cnt; | |
480 | new_static = zebra_evpn_mac_is_static(mac); | |
481 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
6336e12b | 482 | zlog_debug( |
ef7b8be4 DL |
483 | "sync-neigh deref mac vni %u ip %pIA mac %pEA ref %d", |
484 | n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a PR |
485 | mac->sync_neigh_cnt); |
486 | if ((old_static != new_static) && send_mac_update) | |
487 | /* program the local mac in the kernel */ | |
488 | zebra_evpn_sync_mac_dp_install( | |
489 | mac, false /* set_inactive */, | |
490 | false /* force_clear_static */, __func__); | |
6336e12b PR |
491 | } |
492 | ||
7cbae20a PR |
493 | listnode_delete(mac->neigh_list, n); |
494 | zebra_evpn_deref_ip2mac(zevpn, mac); | |
6336e12b PR |
495 | } |
496 | ||
72de4110 DS |
497 | bool zebra_evpn_neigh_is_bgp_seq_ok(struct zebra_evpn *zevpn, |
498 | struct zebra_neigh *n, | |
1a3bd37f | 499 | const struct ethaddr *macaddr, uint32_t seq, |
16de1338 | 500 | bool sync) |
6336e12b | 501 | { |
7cbae20a | 502 | uint32_t tmp_seq; |
16de1338 | 503 | const char *n_type; |
1e1398e3 | 504 | bool is_local = false; |
6336e12b | 505 | |
16de1338 | 506 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
7cbae20a | 507 | tmp_seq = n->loc_seq; |
16de1338 | 508 | n_type = "local"; |
1e1398e3 | 509 | is_local = true; |
16de1338 | 510 | } else { |
7cbae20a | 511 | tmp_seq = n->rem_seq; |
16de1338 AK |
512 | n_type = "remote"; |
513 | } | |
6336e12b | 514 | |
7cbae20a | 515 | if (seq < tmp_seq) { |
1e1398e3 SW |
516 | if (is_local && !zebra_evpn_neigh_is_ready_for_bgp(n)) { |
517 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH || | |
518 | IS_ZEBRA_DEBUG_VXLAN) | |
519 | zlog_debug( | |
520 | "%s-macip not ready vni %u %s mac %pEA IP %pIA lower seq %u f 0x%x", | |
521 | sync ? "sync" : "remote", zevpn->vni, | |
522 | n_type, macaddr, &n->ip, tmp_seq, | |
523 | n->flags); | |
524 | return true; | |
525 | } | |
526 | ||
7cbae20a PR |
527 | /* if the neigh was never advertised to bgp we must accept |
528 | * whatever sequence number bgp sends | |
7cbae20a | 529 | */ |
da823882 | 530 | if (!is_local && zebra_vxlan_get_accept_bgp_seq()) { |
16de1338 AK |
531 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH |
532 | || IS_ZEBRA_DEBUG_VXLAN) | |
7cbae20a | 533 | zlog_debug( |
ef7b8be4 | 534 | "%s-macip accept vni %u %s mac %pEA IP %pIA lower seq %u f 0x%x", |
16de1338 | 535 | sync ? "sync" : "remote", zevpn->vni, |
ef7b8be4 | 536 | n_type, macaddr, &n->ip, |
7cbae20a PR |
537 | tmp_seq, n->flags); |
538 | return true; | |
539 | } | |
6336e12b | 540 | |
16de1338 | 541 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH || IS_ZEBRA_DEBUG_VXLAN) |
7cbae20a | 542 | zlog_debug( |
ef7b8be4 | 543 | "%s-macip ignore vni %u %s mac %pEA IP %pIA as existing has higher seq %u f 0x%x", |
16de1338 | 544 | sync ? "sync" : "remote", zevpn->vni, n_type, |
ef7b8be4 | 545 | macaddr, &n->ip, tmp_seq, n->flags); |
7cbae20a | 546 | return false; |
6336e12b | 547 | } |
7cbae20a PR |
548 | |
549 | return true; | |
6336e12b PR |
550 | } |
551 | ||
552 | /* | |
7cbae20a | 553 | * Add neighbor entry. |
6336e12b | 554 | */ |
72de4110 DS |
555 | static struct zebra_neigh *zebra_evpn_neigh_add(struct zebra_evpn *zevpn, |
556 | const struct ipaddr *ip, | |
557 | const struct ethaddr *mac, | |
558 | struct zebra_mac *zmac, | |
559 | uint32_t n_flags) | |
6336e12b | 560 | { |
72de4110 DS |
561 | struct zebra_neigh tmp_n; |
562 | struct zebra_neigh *n = NULL; | |
6336e12b | 563 | |
6006b807 | 564 | memset(&tmp_n, 0, sizeof(tmp_n)); |
7cbae20a PR |
565 | memcpy(&tmp_n.ip, ip, sizeof(struct ipaddr)); |
566 | n = hash_get(zevpn->neigh_table, &tmp_n, zebra_evpn_neigh_alloc); | |
6336e12b | 567 | |
7cbae20a PR |
568 | n->state = ZEBRA_NEIGH_INACTIVE; |
569 | n->zevpn = zevpn; | |
570 | n->dad_ip_auto_recovery_timer = NULL; | |
571 | n->flags = n_flags; | |
a05111ba | 572 | n->uptime = monotime(NULL); |
6336e12b | 573 | |
7cbae20a PR |
574 | if (!zmac) |
575 | zmac = zebra_evpn_mac_lookup(zevpn, mac); | |
576 | zebra_evpn_local_neigh_ref_mac(n, mac, zmac, | |
577 | false /* send_mac_update */); | |
6336e12b | 578 | |
7cbae20a | 579 | return n; |
6336e12b PR |
580 | } |
581 | ||
582 | /* | |
7cbae20a | 583 | * Delete neighbor entry. |
6336e12b | 584 | */ |
72de4110 | 585 | int zebra_evpn_neigh_del(struct zebra_evpn *zevpn, struct zebra_neigh *n) |
6336e12b | 586 | { |
72de4110 | 587 | struct zebra_neigh *tmp_n; |
6336e12b | 588 | |
7cbae20a PR |
589 | if (n->mac) |
590 | listnode_delete(n->mac->neigh_list, n); | |
6336e12b | 591 | |
7cbae20a PR |
592 | /* Cancel auto recovery */ |
593 | THREAD_OFF(n->dad_ip_auto_recovery_timer); | |
6336e12b | 594 | |
2b9e207e AK |
595 | /* Cancel proxy hold timer */ |
596 | zebra_evpn_neigh_stop_hold_timer(n); | |
597 | ||
7cbae20a PR |
598 | /* Free the VNI hash entry and allocated memory. */ |
599 | tmp_n = hash_release(zevpn->neigh_table, n); | |
600 | XFREE(MTYPE_NEIGH, tmp_n); | |
6336e12b PR |
601 | |
602 | return 0; | |
603 | } | |
604 | ||
72de4110 | 605 | void zebra_evpn_sync_neigh_del(struct zebra_neigh *n) |
6336e12b | 606 | { |
7cbae20a PR |
607 | bool old_n_static; |
608 | bool new_n_static; | |
6336e12b | 609 | |
7cbae20a | 610 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
ef7b8be4 DL |
611 | zlog_debug("sync-neigh del vni %u ip %pIA mac %pEA f 0x%x", |
612 | n->zevpn->vni, &n->ip, &n->emac, n->flags); | |
6336e12b | 613 | |
7cbae20a PR |
614 | old_n_static = zebra_evpn_neigh_is_static(n); |
615 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
616 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
617 | zebra_evpn_neigh_start_hold_timer(n); | |
618 | new_n_static = zebra_evpn_neigh_is_static(n); | |
6336e12b | 619 | |
7cbae20a PR |
620 | if (old_n_static != new_n_static) |
621 | zebra_evpn_sync_neigh_static_chg( | |
622 | n, old_n_static, new_n_static, false /*defer-dp*/, | |
623 | false /*defer_mac_dp*/, __func__); | |
624 | } | |
6336e12b | 625 | |
72de4110 DS |
626 | struct zebra_neigh *zebra_evpn_proc_sync_neigh_update( |
627 | struct zebra_evpn *zevpn, struct zebra_neigh *n, uint16_t ipa_len, | |
628 | const struct ipaddr *ipaddr, uint8_t flags, uint32_t seq, | |
852d9f97 | 629 | const esi_t *esi, struct zebra_mac *mac) |
7cbae20a PR |
630 | { |
631 | struct interface *ifp = NULL; | |
632 | bool is_router; | |
7cbae20a PR |
633 | uint32_t tmp_seq; |
634 | bool old_router = false; | |
635 | bool old_bgp_ready = false; | |
636 | bool new_bgp_ready; | |
637 | bool inform_dataplane = false; | |
638 | bool inform_bgp = false; | |
639 | bool old_mac_static; | |
640 | bool new_mac_static; | |
641 | bool set_dp_inactive = false; | |
7cbae20a PR |
642 | bool created; |
643 | ifindex_t ifindex = 0; | |
6336e12b | 644 | |
7cbae20a PR |
645 | /* locate l3-svi */ |
646 | ifp = zevpn_map_to_svi(zevpn); | |
647 | if (ifp) | |
648 | ifindex = ifp->ifindex; | |
6336e12b | 649 | |
7cbae20a PR |
650 | is_router = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); |
651 | old_mac_static = zebra_evpn_mac_is_static(mac); | |
6336e12b | 652 | |
7cbae20a PR |
653 | if (!n) { |
654 | uint32_t n_flags = 0; | |
6336e12b | 655 | |
7cbae20a PR |
656 | /* New neighbor - create */ |
657 | SET_FLAG(n_flags, ZEBRA_NEIGH_LOCAL); | |
658 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) | |
659 | SET_FLAG(n_flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
660 | else | |
661 | SET_FLAG(n_flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
662 | SET_FLAG(n_flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
6336e12b | 663 | |
7cbae20a PR |
664 | n = zebra_evpn_neigh_add(zevpn, ipaddr, &mac->macaddr, mac, |
665 | n_flags); | |
666 | n->ifindex = ifindex; | |
667 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
6336e12b | 668 | |
7cbae20a PR |
669 | created = true; |
670 | inform_dataplane = true; | |
671 | inform_bgp = true; | |
672 | set_dp_inactive = true; | |
673 | } else { | |
674 | bool mac_change; | |
675 | uint32_t old_flags = n->flags; | |
676 | bool old_n_static; | |
677 | bool new_n_static; | |
6336e12b | 678 | |
7cbae20a PR |
679 | created = false; |
680 | old_n_static = zebra_evpn_neigh_is_static(n); | |
681 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
682 | old_router = !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 683 | |
7cbae20a PR |
684 | mac_change = !!memcmp(&n->emac, &mac->macaddr, ETH_ALEN); |
685 | ||
686 | /* deref and clear old info */ | |
687 | if (mac_change) { | |
688 | if (old_bgp_ready) { | |
689 | zebra_evpn_neigh_send_del_to_client( | |
690 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
691 | n->state, false /*force*/); | |
692 | old_bgp_ready = false; | |
6336e12b | 693 | } |
bc3cd39b DS |
694 | zebra_evpn_local_neigh_deref_mac(n, |
695 | false /*send_mac_update*/); | |
6336e12b | 696 | } |
7cbae20a PR |
697 | /* clear old fwd info */ |
698 | n->rem_seq = 0; | |
699 | n->r_vtep_ip.s_addr = 0; | |
6336e12b | 700 | |
7cbae20a PR |
701 | /* setup new flags */ |
702 | n->flags = 0; | |
703 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
704 | /* retain activity flag if the neigh was | |
705 | * previously local | |
6336e12b | 706 | */ |
7cbae20a PR |
707 | if (old_flags & ZEBRA_NEIGH_LOCAL) { |
708 | n->flags |= (old_flags & ZEBRA_NEIGH_LOCAL_INACTIVE); | |
709 | } else { | |
710 | inform_dataplane = true; | |
711 | set_dp_inactive = true; | |
712 | n->flags |= ZEBRA_NEIGH_LOCAL_INACTIVE; | |
6336e12b PR |
713 | } |
714 | ||
7cbae20a PR |
715 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) { |
716 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY); | |
717 | /* if the neigh was peer-active previously we | |
718 | * need to keep the flag and start the | |
719 | * holdtimer on it. the peer-active flag is | |
720 | * cleared on holdtimer expiry. | |
721 | */ | |
722 | if (CHECK_FLAG(old_flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) { | |
723 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
724 | zebra_evpn_neigh_start_hold_timer(n); | |
725 | } | |
726 | } else { | |
727 | SET_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE); | |
728 | /* stop hold timer if a peer has verified | |
729 | * reachability | |
730 | */ | |
731 | zebra_evpn_neigh_stop_hold_timer(n); | |
6336e12b | 732 | } |
7cbae20a | 733 | ZEBRA_NEIGH_SET_ACTIVE(n); |
6336e12b | 734 | |
7cbae20a | 735 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH && (old_flags != n->flags)) |
6336e12b | 736 | zlog_debug( |
ef7b8be4 DL |
737 | "sync-neigh vni %u ip %pIA mac %pEA old_f 0x%x new_f 0x%x", |
738 | n->zevpn->vni, &n->ip, &n->emac, | |
7cbae20a | 739 | old_flags, n->flags); |
6336e12b | 740 | |
7cbae20a PR |
741 | new_n_static = zebra_evpn_neigh_is_static(n); |
742 | if (mac_change) { | |
743 | set_dp_inactive = true; | |
744 | n->flags |= ZEBRA_NEIGH_LOCAL_INACTIVE; | |
745 | inform_dataplane = true; | |
746 | zebra_evpn_local_neigh_ref_mac( | |
747 | n, &mac->macaddr, mac, | |
748 | false /*send_mac_update*/); | |
749 | } else if (old_n_static != new_n_static) { | |
750 | inform_dataplane = true; | |
751 | /* if static flags have changed without a mac change | |
752 | * we need to create the correct sync-refs against | |
753 | * the existing mac | |
6336e12b | 754 | */ |
7cbae20a PR |
755 | zebra_evpn_sync_neigh_static_chg( |
756 | n, old_n_static, new_n_static, | |
757 | true /*defer_dp*/, true /*defer_mac_dp*/, | |
758 | __func__); | |
6336e12b | 759 | } |
6336e12b | 760 | |
7cbae20a PR |
761 | /* Update the forwarding info. */ |
762 | if (n->ifindex != ifindex) { | |
763 | n->ifindex = ifindex; | |
764 | inform_dataplane = true; | |
6336e12b | 765 | } |
a05111ba DS |
766 | |
767 | n->uptime = monotime(NULL); | |
6336e12b PR |
768 | } |
769 | ||
7cbae20a PR |
770 | /* update the neigh seq. we don't bother with the mac seq as |
771 | * sync_mac_update already took care of that | |
772 | */ | |
773 | tmp_seq = MAX(n->loc_seq, seq); | |
774 | if (tmp_seq != n->loc_seq) { | |
775 | n->loc_seq = tmp_seq; | |
776 | inform_bgp = true; | |
777 | } | |
6336e12b | 778 | |
7cbae20a PR |
779 | /* Mark Router flag (R-bit) */ |
780 | if (is_router) | |
781 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
782 | else | |
783 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 784 | |
7cbae20a PR |
785 | if (old_router != is_router) |
786 | inform_dataplane = true; | |
6336e12b | 787 | |
7cbae20a PR |
788 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); |
789 | if (old_bgp_ready != new_bgp_ready) | |
790 | inform_bgp = true; | |
6336e12b | 791 | |
7cbae20a | 792 | new_mac_static = zebra_evpn_mac_is_static(mac); |
852d9f97 SW |
793 | if (old_mac_static != new_mac_static) |
794 | zebra_evpn_sync_mac_dp_install(mac, false /* set_inactive */, | |
7cbae20a PR |
795 | false /* force_clear_static */, |
796 | __func__); | |
6336e12b | 797 | |
7cbae20a PR |
798 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
799 | zlog_debug( | |
ef7b8be4 | 800 | "sync-neigh %s vni %u ip %pIA mac %pEA if %s(%d) seq %d f 0x%x%s%s", |
7cbae20a | 801 | created ? "created" : "updated", n->zevpn->vni, |
ef7b8be4 | 802 | &n->ip, &n->emac, |
7cbae20a PR |
803 | ifp ? ifp->name : "", ifindex, n->loc_seq, n->flags, |
804 | inform_bgp ? " inform_bgp" : "", | |
805 | inform_dataplane ? " inform_dp" : ""); | |
6336e12b | 806 | |
7cbae20a PR |
807 | if (inform_dataplane) |
808 | zebra_evpn_sync_neigh_dp_install(n, set_dp_inactive, | |
809 | false /* force_clear_static */, | |
810 | __func__); | |
6336e12b | 811 | |
7cbae20a PR |
812 | if (inform_bgp) |
813 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
814 | new_bgp_ready); | |
6336e12b | 815 | |
7cbae20a PR |
816 | return n; |
817 | } | |
6336e12b | 818 | |
7cbae20a PR |
819 | /* |
820 | * Uninstall remote neighbor from the kernel. | |
821 | */ | |
f6371c34 | 822 | static int zebra_evpn_neigh_uninstall(struct zebra_evpn *zevpn, |
72de4110 | 823 | struct zebra_neigh *n) |
7cbae20a PR |
824 | { |
825 | struct interface *vlan_if; | |
6336e12b | 826 | |
7cbae20a PR |
827 | if (!(n->flags & ZEBRA_NEIGH_REMOTE)) |
828 | return 0; | |
6336e12b | 829 | |
7cbae20a PR |
830 | vlan_if = zevpn_map_to_svi(zevpn); |
831 | if (!vlan_if) | |
832 | return -1; | |
6336e12b | 833 | |
7cbae20a PR |
834 | ZEBRA_NEIGH_SET_INACTIVE(n); |
835 | n->loc_seq = 0; | |
6336e12b | 836 | |
7cbae20a | 837 | dplane_rem_neigh_delete(vlan_if, &n->ip); |
6336e12b PR |
838 | |
839 | return 0; | |
840 | } | |
841 | ||
7cbae20a PR |
842 | /* |
843 | * Free neighbor hash entry (callback) | |
844 | */ | |
845 | static void zebra_evpn_neigh_del_hash_entry(struct hash_bucket *bucket, | |
846 | void *arg) | |
6336e12b | 847 | { |
7cbae20a | 848 | struct neigh_walk_ctx *wctx = arg; |
72de4110 | 849 | struct zebra_neigh *n = bucket->data; |
6336e12b | 850 | |
7cbae20a PR |
851 | if (((wctx->flags & DEL_LOCAL_NEIGH) && (n->flags & ZEBRA_NEIGH_LOCAL)) |
852 | || ((wctx->flags & DEL_REMOTE_NEIGH) | |
853 | && (n->flags & ZEBRA_NEIGH_REMOTE)) | |
854 | || ((wctx->flags & DEL_REMOTE_NEIGH_FROM_VTEP) | |
855 | && (n->flags & ZEBRA_NEIGH_REMOTE) | |
856 | && IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip))) { | |
857 | if (wctx->upd_client && (n->flags & ZEBRA_NEIGH_LOCAL)) | |
858 | zebra_evpn_neigh_send_del_to_client( | |
859 | wctx->zevpn->vni, &n->ip, &n->emac, n->flags, | |
860 | n->state, false /*force*/); | |
6336e12b | 861 | |
7cbae20a PR |
862 | if (wctx->uninstall) { |
863 | if (zebra_evpn_neigh_is_static(n)) | |
864 | zebra_evpn_sync_neigh_dp_install( | |
865 | n, false /* set_inactive */, | |
866 | true /* force_clear_static */, | |
867 | __func__); | |
868 | if ((n->flags & ZEBRA_NEIGH_REMOTE)) | |
869 | zebra_evpn_neigh_uninstall(wctx->zevpn, n); | |
6336e12b PR |
870 | } |
871 | ||
7cbae20a PR |
872 | zebra_evpn_neigh_del(wctx->zevpn, n); |
873 | } | |
6336e12b | 874 | |
7cbae20a PR |
875 | return; |
876 | } | |
6336e12b | 877 | |
7cbae20a PR |
878 | /* |
879 | * Delete all neighbor entries for this EVPN. | |
880 | */ | |
f6371c34 | 881 | void zebra_evpn_neigh_del_all(struct zebra_evpn *zevpn, int uninstall, |
7cbae20a PR |
882 | int upd_client, uint32_t flags) |
883 | { | |
884 | struct neigh_walk_ctx wctx; | |
6336e12b | 885 | |
7cbae20a PR |
886 | if (!zevpn->neigh_table) |
887 | return; | |
6336e12b | 888 | |
6006b807 | 889 | memset(&wctx, 0, sizeof(wctx)); |
7cbae20a PR |
890 | wctx.zevpn = zevpn; |
891 | wctx.uninstall = uninstall; | |
892 | wctx.upd_client = upd_client; | |
893 | wctx.flags = flags; | |
6336e12b | 894 | |
7cbae20a PR |
895 | hash_iterate(zevpn->neigh_table, zebra_evpn_neigh_del_hash_entry, |
896 | &wctx); | |
897 | } | |
6336e12b | 898 | |
7cbae20a PR |
899 | /* |
900 | * Look up neighbor hash entry. | |
901 | */ | |
72de4110 DS |
902 | struct zebra_neigh *zebra_evpn_neigh_lookup(struct zebra_evpn *zevpn, |
903 | const struct ipaddr *ip) | |
7cbae20a | 904 | { |
72de4110 DS |
905 | struct zebra_neigh tmp; |
906 | struct zebra_neigh *n; | |
6336e12b | 907 | |
7cbae20a PR |
908 | memset(&tmp, 0, sizeof(tmp)); |
909 | memcpy(&tmp.ip, ip, sizeof(struct ipaddr)); | |
910 | n = hash_lookup(zevpn->neigh_table, &tmp); | |
6336e12b | 911 | |
7cbae20a PR |
912 | return n; |
913 | } | |
6336e12b | 914 | |
7cbae20a PR |
915 | /* |
916 | * Process all neighbors associated with a MAC upon the MAC being learnt | |
917 | * locally or undergoing any other change (such as sequence number). | |
918 | */ | |
f6371c34 | 919 | void zebra_evpn_process_neigh_on_local_mac_change(struct zebra_evpn *zevpn, |
3198b2b3 | 920 | struct zebra_mac *zmac, |
7cbae20a PR |
921 | bool seq_change, |
922 | bool es_change) | |
923 | { | |
72de4110 | 924 | struct zebra_neigh *n = NULL; |
7cbae20a PR |
925 | struct listnode *node = NULL; |
926 | struct zebra_vrf *zvrf = NULL; | |
6336e12b | 927 | |
096f7609 | 928 | zvrf = zevpn->vxlan_if->vrf->info; |
6336e12b | 929 | |
7cbae20a | 930 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
931 | zlog_debug("Processing neighbors on local MAC %pEA %s, VNI %u", |
932 | &zmac->macaddr, seq_change ? "CHANGE" : "ADD", | |
933 | zevpn->vni); | |
6336e12b | 934 | |
7cbae20a PR |
935 | /* Walk all neighbors and mark any inactive local neighbors as |
936 | * active and/or update sequence number upon a move, and inform BGP. | |
937 | * The action for remote neighbors is TBD. | |
938 | * NOTE: We can't simply uninstall remote neighbors as the kernel may | |
939 | * accidentally end up deleting a just-learnt local neighbor. | |
940 | */ | |
941 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
942 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
943 | if (IS_ZEBRA_NEIGH_INACTIVE(n) || seq_change | |
944 | || es_change) { | |
945 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
946 | n->loc_seq = zmac->loc_seq; | |
b2ee2b71 AK |
947 | if (!(zebra_evpn_do_dup_addr_detect(zvrf) |
948 | && zvrf->dad_freeze | |
7cbae20a PR |
949 | && !!CHECK_FLAG(n->flags, |
950 | ZEBRA_NEIGH_DUPLICATE))) | |
951 | zebra_evpn_neigh_send_add_to_client( | |
952 | zevpn->vni, &n->ip, &n->emac, | |
953 | n->mac, n->flags, n->loc_seq); | |
954 | } | |
6336e12b | 955 | } |
7cbae20a PR |
956 | } |
957 | } | |
6336e12b | 958 | |
7cbae20a PR |
959 | /* |
960 | * Process all neighbors associated with a local MAC upon the MAC being | |
961 | * deleted. | |
962 | */ | |
f6371c34 | 963 | void zebra_evpn_process_neigh_on_local_mac_del(struct zebra_evpn *zevpn, |
3198b2b3 | 964 | struct zebra_mac *zmac) |
7cbae20a | 965 | { |
72de4110 | 966 | struct zebra_neigh *n = NULL; |
7cbae20a | 967 | struct listnode *node = NULL; |
6336e12b | 968 | |
7cbae20a | 969 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
970 | zlog_debug("Processing neighbors on local MAC %pEA DEL, VNI %u", |
971 | &zmac->macaddr, zevpn->vni); | |
6336e12b | 972 | |
7cbae20a PR |
973 | /* Walk all local neighbors and mark as inactive and inform |
974 | * BGP, if needed. | |
975 | * TBD: There is currently no handling for remote neighbors. We | |
976 | * don't expect them to exist, if they do, do we install the MAC | |
977 | * as a remote MAC and the neighbor as remote? | |
978 | */ | |
979 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
980 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
981 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) { | |
982 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
983 | n->loc_seq = 0; | |
984 | zebra_evpn_neigh_send_del_to_client( | |
985 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
986 | ZEBRA_NEIGH_ACTIVE, false /*force*/); | |
987 | } | |
988 | } | |
6336e12b | 989 | } |
6336e12b PR |
990 | } |
991 | ||
7cbae20a PR |
992 | /* |
993 | * Process all neighbors associated with a MAC upon the MAC being remotely | |
994 | * learnt. | |
995 | */ | |
f6371c34 | 996 | void zebra_evpn_process_neigh_on_remote_mac_add(struct zebra_evpn *zevpn, |
3198b2b3 | 997 | struct zebra_mac *zmac) |
6336e12b | 998 | { |
72de4110 | 999 | struct zebra_neigh *n = NULL; |
7cbae20a | 1000 | struct listnode *node = NULL; |
6336e12b | 1001 | |
7cbae20a | 1002 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
1003 | zlog_debug("Processing neighbors on remote MAC %pEA ADD, VNI %u", |
1004 | &zmac->macaddr, zevpn->vni); | |
6336e12b | 1005 | |
7cbae20a PR |
1006 | /* Walk all local neighbors and mark as inactive and inform |
1007 | * BGP, if needed. | |
1008 | */ | |
1009 | for (ALL_LIST_ELEMENTS_RO(zmac->neigh_list, node, n)) { | |
1010 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
1011 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) { | |
1012 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
1013 | n->loc_seq = 0; | |
1014 | zebra_evpn_neigh_send_del_to_client( | |
1015 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
1016 | ZEBRA_NEIGH_ACTIVE, false /* force */); | |
1017 | } | |
1018 | } | |
1019 | } | |
6336e12b PR |
1020 | } |
1021 | ||
7cbae20a PR |
1022 | /* |
1023 | * Process all neighbors associated with a remote MAC upon the MAC being | |
1024 | * deleted. | |
1025 | */ | |
f6371c34 | 1026 | void zebra_evpn_process_neigh_on_remote_mac_del(struct zebra_evpn *zevpn, |
3198b2b3 | 1027 | struct zebra_mac *zmac) |
6336e12b | 1028 | { |
7cbae20a | 1029 | /* NOTE: Currently a NO-OP. */ |
6336e12b PR |
1030 | } |
1031 | ||
7cbae20a | 1032 | static inline void zebra_evpn_local_neigh_update_log( |
72de4110 DS |
1033 | const char *pfx, struct zebra_neigh *n, bool is_router, |
1034 | bool local_inactive, bool old_bgp_ready, bool new_bgp_ready, | |
1035 | bool inform_dataplane, bool inform_bgp, const char *sfx) | |
7cbae20a | 1036 | { |
7cbae20a | 1037 | if (!IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) |
6336e12b PR |
1038 | return; |
1039 | ||
ef7b8be4 DL |
1040 | zlog_debug("%s neigh vni %u ip %pIA mac %pEA f 0x%x%s%s%s%s%s%s %s", pfx, |
1041 | n->zevpn->vni, &n->ip, &n->emac, n->flags, | |
7cbae20a PR |
1042 | is_router ? " router" : "", |
1043 | local_inactive ? " local-inactive" : "", | |
1044 | old_bgp_ready ? " old_bgp_ready" : "", | |
1045 | new_bgp_ready ? " new_bgp_ready" : "", | |
1046 | inform_dataplane ? " inform_dp" : "", | |
1047 | inform_bgp ? " inform_bgp" : "", sfx); | |
1048 | } | |
1049 | ||
1050 | /* As part Duplicate Address Detection (DAD) for IP mobility | |
1051 | * MAC binding changes, ensure to inherit duplicate flag | |
1052 | * from MAC. | |
1053 | */ | |
036daaca | 1054 | static int zebra_evpn_ip_inherit_dad_from_mac(struct zebra_vrf *zvrf, |
3198b2b3 DS |
1055 | struct zebra_mac *old_zmac, |
1056 | struct zebra_mac *new_zmac, | |
72de4110 | 1057 | struct zebra_neigh *nbr) |
7cbae20a PR |
1058 | { |
1059 | bool is_old_mac_dup = false; | |
1060 | bool is_new_mac_dup = false; | |
6336e12b | 1061 | |
b2ee2b71 | 1062 | if (!zebra_evpn_do_dup_addr_detect(zvrf)) |
7cbae20a PR |
1063 | return 0; |
1064 | /* Check old or new MAC is detected as duplicate | |
1065 | * mark this neigh as duplicate | |
1066 | */ | |
1067 | if (old_zmac) | |
1068 | is_old_mac_dup = | |
1069 | CHECK_FLAG(old_zmac->flags, ZEBRA_MAC_DUPLICATE); | |
1070 | if (new_zmac) | |
1071 | is_new_mac_dup = | |
1072 | CHECK_FLAG(new_zmac->flags, ZEBRA_MAC_DUPLICATE); | |
1073 | /* Old and/or new MAC can be in duplicate state, | |
1074 | * based on that IP/Neigh Inherits the flag. | |
1075 | * If New MAC is marked duplicate, inherit to the IP. | |
1076 | * If old MAC is duplicate but new MAC is not, clear | |
1077 | * duplicate flag for IP and reset detection params | |
1078 | * and let IP DAD retrigger. | |
6336e12b | 1079 | */ |
7cbae20a PR |
1080 | if (is_new_mac_dup && !CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) { |
1081 | SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1082 | /* Capture Duplicate detection time */ | |
1083 | nbr->dad_dup_detect_time = monotime(NULL); | |
1084 | /* Mark neigh inactive */ | |
1085 | ZEBRA_NEIGH_SET_INACTIVE(nbr); | |
6336e12b | 1086 | |
7cbae20a PR |
1087 | return 1; |
1088 | } else if (is_old_mac_dup && !is_new_mac_dup) { | |
1089 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1090 | nbr->dad_count = 0; | |
1091 | nbr->detect_start_time.tv_sec = 0; | |
1092 | nbr->detect_start_time.tv_usec = 0; | |
1093 | } | |
1094 | return 0; | |
6336e12b PR |
1095 | } |
1096 | ||
cc9f21da | 1097 | static void zebra_evpn_dad_ip_auto_recovery_exp(struct thread *t) |
6336e12b | 1098 | { |
7cbae20a | 1099 | struct zebra_vrf *zvrf = NULL; |
72de4110 | 1100 | struct zebra_neigh *nbr = NULL; |
f6371c34 | 1101 | struct zebra_evpn *zevpn = NULL; |
6336e12b | 1102 | |
7cbae20a | 1103 | nbr = THREAD_ARG(t); |
6336e12b | 1104 | |
7cbae20a PR |
1105 | /* since this is asynchronous we need sanity checks*/ |
1106 | zvrf = vrf_info_lookup(nbr->zevpn->vrf_id); | |
1107 | if (!zvrf) | |
cc9f21da | 1108 | return; |
6336e12b | 1109 | |
8b5fdf2e | 1110 | zevpn = zebra_evpn_lookup(nbr->zevpn->vni); |
7cbae20a | 1111 | if (!zevpn) |
cc9f21da | 1112 | return; |
6336e12b | 1113 | |
7cbae20a PR |
1114 | nbr = zebra_evpn_neigh_lookup(zevpn, &nbr->ip); |
1115 | if (!nbr) | |
cc9f21da | 1116 | return; |
7cbae20a PR |
1117 | |
1118 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1119 | zlog_debug( | |
ef7b8be4 DL |
1120 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x learn count %u vni %u auto recovery expired", |
1121 | __func__, &nbr->emac, &nbr->ip, nbr->flags, | |
7cbae20a | 1122 | nbr->dad_count, zevpn->vni); |
6336e12b | 1123 | |
7cbae20a PR |
1124 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); |
1125 | nbr->dad_count = 0; | |
1126 | nbr->detect_start_time.tv_sec = 0; | |
1127 | nbr->detect_start_time.tv_usec = 0; | |
1128 | nbr->dad_dup_detect_time = 0; | |
1129 | nbr->dad_ip_auto_recovery_timer = NULL; | |
1130 | ZEBRA_NEIGH_SET_ACTIVE(nbr); | |
6336e12b | 1131 | |
7cbae20a PR |
1132 | /* Send to BGP */ |
1133 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) { | |
1134 | zebra_evpn_neigh_send_add_to_client(zevpn->vni, &nbr->ip, | |
1135 | &nbr->emac, nbr->mac, | |
1136 | nbr->flags, nbr->loc_seq); | |
1137 | } else if (!!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) { | |
1138 | zebra_evpn_rem_neigh_install(zevpn, nbr, false /*was_static*/); | |
1139 | } | |
7cbae20a | 1140 | } |
6336e12b | 1141 | |
72de4110 DS |
1142 | static void zebra_evpn_dup_addr_detect_for_neigh( |
1143 | struct zebra_vrf *zvrf, struct zebra_neigh *nbr, struct in_addr vtep_ip, | |
1144 | bool do_dad, bool *is_dup_detect, bool is_local) | |
7cbae20a PR |
1145 | { |
1146 | ||
1147 | struct timeval elapsed = {0, 0}; | |
7cbae20a | 1148 | bool reset_params = false; |
6336e12b | 1149 | |
b2ee2b71 | 1150 | if (!zebra_evpn_do_dup_addr_detect(zvrf)) |
7cbae20a PR |
1151 | return; |
1152 | ||
1153 | /* IP is detected as duplicate or inherit dup | |
1154 | * state, hold on to install as remote entry | |
1155 | * only if freeze is enabled. | |
1156 | */ | |
1157 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) { | |
6336e12b PR |
1158 | if (IS_ZEBRA_DEBUG_VXLAN) |
1159 | zlog_debug( | |
ef7b8be4 DL |
1160 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x skip installing, learn count %u recover time %u", |
1161 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a PR |
1162 | nbr->flags, nbr->dad_count, |
1163 | zvrf->dad_freeze_time); | |
6336e12b | 1164 | |
7cbae20a PR |
1165 | if (zvrf->dad_freeze) |
1166 | *is_dup_detect = true; | |
6336e12b | 1167 | |
7cbae20a PR |
1168 | /* warn-only action, neigh will be installed. |
1169 | * freeze action, it wil not be installed. | |
6336e12b | 1170 | */ |
7cbae20a PR |
1171 | return; |
1172 | } | |
6336e12b | 1173 | |
7cbae20a PR |
1174 | if (!do_dad) |
1175 | return; | |
6336e12b | 1176 | |
7cbae20a PR |
1177 | /* Check if detection time (M-secs) expired. |
1178 | * Reset learn count and detection start time. | |
1179 | * During remote mac add, count should already be 1 | |
1180 | * via local learning. | |
1181 | */ | |
1182 | monotime_since(&nbr->detect_start_time, &elapsed); | |
1183 | reset_params = (elapsed.tv_sec > zvrf->dad_time); | |
6336e12b | 1184 | |
7cbae20a PR |
1185 | if (is_local && !reset_params) { |
1186 | /* RFC-7432: A PE/VTEP that detects a MAC mobility | |
1187 | * event via LOCAL learning starts an M-second timer. | |
1188 | * | |
1189 | * NOTE: This is the START of the probe with count is | |
1190 | * 0 during LOCAL learn event. | |
1191 | */ | |
1192 | reset_params = !nbr->dad_count; | |
6336e12b PR |
1193 | } |
1194 | ||
7cbae20a PR |
1195 | if (reset_params) { |
1196 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1197 | zlog_debug( | |
ef7b8be4 DL |
1198 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x detection time passed, reset learn count %u", |
1199 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a PR |
1200 | nbr->flags, nbr->dad_count); |
1201 | /* Reset learn count but do not start detection | |
1202 | * during REMOTE learn event. | |
1203 | */ | |
1204 | nbr->dad_count = 0; | |
1205 | /* Start dup. addr detection (DAD) start time, | |
1206 | * ONLY during LOCAL learn. | |
1207 | */ | |
1208 | if (is_local) | |
1209 | monotime(&nbr->detect_start_time); | |
6336e12b | 1210 | |
7cbae20a PR |
1211 | } else if (!is_local) { |
1212 | /* For REMOTE IP/Neigh, increment detection count | |
1213 | * ONLY while in probe window, once window passed, | |
1214 | * next local learn event should trigger DAD. | |
1215 | */ | |
1216 | nbr->dad_count++; | |
6336e12b PR |
1217 | } |
1218 | ||
7cbae20a PR |
1219 | /* For LOCAL IP/Neigh learn event, once count is reset above via either |
1220 | * initial/start detection time or passed the probe time, the count | |
1221 | * needs to be incremented. | |
1222 | */ | |
1223 | if (is_local) | |
1224 | nbr->dad_count++; | |
6336e12b | 1225 | |
7cbae20a PR |
1226 | if (nbr->dad_count >= zvrf->dad_max_moves) { |
1227 | flog_warn( | |
1228 | EC_ZEBRA_DUP_IP_DETECTED, | |
ef7b8be4 DL |
1229 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during %s VTEP %pI4", |
1230 | nbr->zevpn->vni, &nbr->emac, &nbr->ip, | |
7cbae20a | 1231 | is_local ? "local update, last" : "remote update, from", |
9bcef951 | 1232 | &vtep_ip); |
6336e12b | 1233 | |
7cbae20a | 1234 | SET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); |
6336e12b | 1235 | |
7cbae20a PR |
1236 | /* Capture Duplicate detection time */ |
1237 | nbr->dad_dup_detect_time = monotime(NULL); | |
6336e12b | 1238 | |
7cbae20a PR |
1239 | /* Start auto recovery timer for this IP */ |
1240 | THREAD_OFF(nbr->dad_ip_auto_recovery_timer); | |
1241 | if (zvrf->dad_freeze && zvrf->dad_freeze_time) { | |
1242 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1243 | zlog_debug( | |
ef7b8be4 DL |
1244 | "%s: duplicate addr MAC %pEA IP %pIA flags 0x%x auto recovery time %u start", |
1245 | __func__, &nbr->emac, &nbr->ip, | |
7cbae20a | 1246 | nbr->flags, zvrf->dad_freeze_time); |
6336e12b | 1247 | |
7cbae20a PR |
1248 | thread_add_timer(zrouter.master, |
1249 | zebra_evpn_dad_ip_auto_recovery_exp, | |
1250 | nbr, zvrf->dad_freeze_time, | |
1251 | &nbr->dad_ip_auto_recovery_timer); | |
1252 | } | |
1253 | if (zvrf->dad_freeze) | |
1254 | *is_dup_detect = true; | |
1255 | } | |
6336e12b PR |
1256 | } |
1257 | ||
f6371c34 DS |
1258 | int zebra_evpn_local_neigh_update(struct zebra_evpn *zevpn, |
1259 | struct interface *ifp, | |
1a3bd37f MS |
1260 | const struct ipaddr *ip, |
1261 | const struct ethaddr *macaddr, bool is_router, | |
1262 | bool local_inactive, bool dp_static) | |
6336e12b | 1263 | { |
7cbae20a | 1264 | struct zebra_vrf *zvrf; |
72de4110 | 1265 | struct zebra_neigh *n = NULL; |
3198b2b3 | 1266 | struct zebra_mac *zmac = NULL, *old_zmac = NULL; |
7cbae20a PR |
1267 | uint32_t old_mac_seq = 0, mac_new_seq = 0; |
1268 | bool upd_mac_seq = false; | |
1269 | bool neigh_mac_change = false; | |
1270 | bool neigh_on_hold = false; | |
1271 | bool neigh_was_remote = false; | |
1272 | bool do_dad = false; | |
1273 | struct in_addr vtep_ip = {.s_addr = 0}; | |
1274 | bool inform_dataplane = false; | |
1275 | bool created = false; | |
1276 | bool new_static = false; | |
1277 | bool old_bgp_ready = false; | |
1278 | bool new_bgp_ready; | |
6336e12b | 1279 | |
7cbae20a PR |
1280 | /* Check if the MAC exists. */ |
1281 | zmac = zebra_evpn_mac_lookup(zevpn, macaddr); | |
1282 | if (!zmac) { | |
1283 | /* create a dummy MAC if the MAC is not already present */ | |
6336e12b | 1284 | if (IS_ZEBRA_DEBUG_VXLAN) |
ef7b8be4 DL |
1285 | zlog_debug("AUTO MAC %pEA created for neigh %pIA on VNI %u", |
1286 | macaddr, ip, zevpn->vni); | |
6336e12b | 1287 | |
852d9f97 SW |
1288 | zmac = zebra_evpn_mac_add_auto(zevpn, macaddr); |
1289 | if (!zmac) { | |
1290 | zlog_debug("Failed to add MAC %pEA VNI %u", macaddr, | |
1291 | zevpn->vni); | |
1292 | return -1; | |
1293 | } | |
7cbae20a PR |
1294 | } else { |
1295 | if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) { | |
1296 | /* | |
1297 | * We don't change the MAC to local upon a neighbor | |
1298 | * learn event, we wait for the explicit local MAC | |
1299 | * learn. However, we have to compute its sequence | |
1300 | * number in preparation for when it actually turns | |
1301 | * local. | |
1302 | */ | |
1303 | upd_mac_seq = true; | |
1304 | } | |
1305 | } | |
6336e12b | 1306 | |
096f7609 | 1307 | zvrf = zevpn->vxlan_if->vrf->info; |
7cbae20a PR |
1308 | if (!zvrf) { |
1309 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1310 | zlog_debug(" Unable to find vrf for: %d", | |
096f7609 | 1311 | zevpn->vxlan_if->vrf->vrf_id); |
7cbae20a PR |
1312 | return -1; |
1313 | } | |
6336e12b | 1314 | |
7cbae20a PR |
1315 | /* Check if the neighbor exists. */ |
1316 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
1317 | if (!n) { | |
1318 | /* New neighbor - create */ | |
1319 | n = zebra_evpn_neigh_add(zevpn, ip, macaddr, zmac, 0); | |
97511d01 | 1320 | |
7cbae20a PR |
1321 | /* Set "local" forwarding info. */ |
1322 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
1323 | n->ifindex = ifp->ifindex; | |
1324 | created = true; | |
6336e12b | 1325 | } else { |
7cbae20a PR |
1326 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
1327 | bool mac_different; | |
1328 | bool cur_is_router; | |
1329 | bool old_local_inactive; | |
6336e12b | 1330 | |
7cbae20a PR |
1331 | old_local_inactive = !!CHECK_FLAG( |
1332 | n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
6336e12b | 1333 | |
7cbae20a | 1334 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); |
6336e12b | 1335 | |
7cbae20a PR |
1336 | /* Note any changes and see if of interest to BGP. */ |
1337 | mac_different = !!memcmp(&n->emac, macaddr, ETH_ALEN); | |
1338 | cur_is_router = | |
1339 | !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1340 | new_static = zebra_evpn_neigh_is_static(n); | |
1341 | if (!mac_different && is_router == cur_is_router | |
1342 | && old_local_inactive == local_inactive | |
1343 | && dp_static != new_static) { | |
1344 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1345 | zlog_debug( | |
1346 | " Ignoring entry mac is the same and is_router == cur_is_router"); | |
1347 | n->ifindex = ifp->ifindex; | |
1348 | return 0; | |
1349 | } | |
6336e12b | 1350 | |
7cbae20a PR |
1351 | old_zmac = n->mac; |
1352 | if (!mac_different) { | |
1353 | /* XXX - cleanup this code duplication */ | |
1354 | bool is_neigh_freezed = false; | |
6336e12b | 1355 | |
7cbae20a PR |
1356 | /* Only the router flag has changed. */ |
1357 | if (is_router) | |
1358 | SET_FLAG(n->flags, | |
1359 | ZEBRA_NEIGH_ROUTER_FLAG); | |
1360 | else | |
1361 | UNSET_FLAG(n->flags, | |
1362 | ZEBRA_NEIGH_ROUTER_FLAG); | |
6336e12b | 1363 | |
7cbae20a PR |
1364 | if (local_inactive) |
1365 | SET_FLAG(n->flags, | |
1366 | ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1367 | else | |
1368 | UNSET_FLAG(n->flags, | |
1369 | ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1370 | new_bgp_ready = | |
1371 | zebra_evpn_neigh_is_ready_for_bgp(n); | |
6336e12b | 1372 | |
7c0e4dc6 AK |
1373 | if (dp_static != new_static) |
1374 | inform_dataplane = true; | |
1375 | ||
7cbae20a PR |
1376 | /* Neigh is in freeze state and freeze action |
1377 | * is enabled, do not send update to client. | |
1378 | */ | |
1379 | is_neigh_freezed = | |
b2ee2b71 | 1380 | (zebra_evpn_do_dup_addr_detect(zvrf) |
7cbae20a PR |
1381 | && zvrf->dad_freeze |
1382 | && CHECK_FLAG(n->flags, | |
1383 | ZEBRA_NEIGH_DUPLICATE)); | |
6336e12b | 1384 | |
7cbae20a PR |
1385 | zebra_evpn_local_neigh_update_log( |
1386 | "local", n, is_router, local_inactive, | |
1387 | old_bgp_ready, new_bgp_ready, false, | |
1388 | false, "flag-update"); | |
6336e12b | 1389 | |
7c0e4dc6 AK |
1390 | if (inform_dataplane) |
1391 | zebra_evpn_sync_neigh_dp_install( | |
1392 | n, false /* set_inactive */, | |
1393 | false /* force_clear_static */, | |
1394 | __func__); | |
1395 | ||
7cbae20a PR |
1396 | /* if the neigh can no longer be advertised |
1397 | * remove it from bgp | |
1398 | */ | |
1399 | if (!is_neigh_freezed) { | |
1400 | zebra_evpn_neigh_send_add_del_to_client( | |
1401 | n, old_bgp_ready, | |
1402 | new_bgp_ready); | |
1403 | } else { | |
1404 | if (IS_ZEBRA_DEBUG_VXLAN | |
1405 | && IS_ZEBRA_NEIGH_ACTIVE(n)) | |
1406 | zlog_debug( | |
1407 | " Neighbor active and frozen"); | |
1408 | } | |
1409 | return 0; | |
1410 | } | |
6336e12b | 1411 | |
7cbae20a PR |
1412 | /* The MAC has changed, need to issue a delete |
1413 | * first as this means a different MACIP route. | |
1414 | * Also, need to do some unlinking/relinking. | |
1415 | * We also need to update the MAC's sequence number | |
1416 | * in different situations. | |
1417 | */ | |
1418 | if (old_bgp_ready) { | |
1419 | zebra_evpn_neigh_send_del_to_client( | |
1420 | zevpn->vni, &n->ip, &n->emac, n->flags, | |
1421 | n->state, false /*force*/); | |
1422 | old_bgp_ready = false; | |
1423 | } | |
1424 | if (old_zmac) { | |
1425 | old_mac_seq = CHECK_FLAG(old_zmac->flags, | |
1426 | ZEBRA_MAC_REMOTE) | |
1427 | ? old_zmac->rem_seq | |
1428 | : old_zmac->loc_seq; | |
1429 | neigh_mac_change = upd_mac_seq = true; | |
1430 | zebra_evpn_local_neigh_deref_mac( | |
1431 | n, true /* send_mac_update */); | |
1432 | } | |
6336e12b | 1433 | |
7cbae20a PR |
1434 | /* if mac changes abandon peer flags and tell |
1435 | * dataplane to clear the static flag | |
1436 | */ | |
1437 | if (zebra_evpn_neigh_clear_sync_info(n)) | |
1438 | inform_dataplane = true; | |
1439 | /* Update the forwarding info. */ | |
1440 | n->ifindex = ifp->ifindex; | |
1441 | ||
1442 | /* Link to new MAC */ | |
1443 | zebra_evpn_local_neigh_ref_mac( | |
1444 | n, macaddr, zmac, true /* send_mac_update */); | |
1445 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1446 | /* | |
1447 | * Neighbor has moved from remote to local. Its | |
1448 | * MAC could have also changed as part of the move. | |
1449 | */ | |
1450 | if (memcmp(n->emac.octet, macaddr->octet, ETH_ALEN) | |
1451 | != 0) { | |
1452 | old_zmac = n->mac; | |
1453 | if (old_zmac) { | |
1454 | old_mac_seq = | |
1455 | CHECK_FLAG(old_zmac->flags, | |
1456 | ZEBRA_MAC_REMOTE) | |
1457 | ? old_zmac->rem_seq | |
1458 | : old_zmac->loc_seq; | |
1459 | neigh_mac_change = upd_mac_seq = true; | |
1460 | zebra_evpn_local_neigh_deref_mac( | |
1461 | n, true /* send_update */); | |
1462 | } | |
6336e12b | 1463 | |
7cbae20a PR |
1464 | /* Link to new MAC */ |
1465 | zebra_evpn_local_neigh_ref_mac( | |
1466 | n, macaddr, zmac, true /*send_update*/); | |
1467 | } | |
1468 | /* Based on Mobility event Scenario-B from the | |
1469 | * draft, neigh's previous state was remote treat this | |
1470 | * event for DAD. | |
1471 | */ | |
1472 | neigh_was_remote = true; | |
1473 | vtep_ip = n->r_vtep_ip; | |
1474 | /* Mark appropriately */ | |
1475 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
1476 | n->r_vtep_ip.s_addr = INADDR_ANY; | |
1477 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
1478 | n->ifindex = ifp->ifindex; | |
6336e12b PR |
1479 | } |
1480 | } | |
1481 | ||
7cbae20a PR |
1482 | /* If MAC was previously remote, or the neighbor had a different |
1483 | * MAC earlier, recompute the sequence number. | |
1484 | */ | |
1485 | if (upd_mac_seq) { | |
1486 | uint32_t seq1, seq2; | |
6336e12b | 1487 | |
7cbae20a PR |
1488 | seq1 = CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE) |
1489 | ? zmac->rem_seq + 1 | |
1490 | : zmac->loc_seq; | |
1491 | seq2 = neigh_mac_change ? old_mac_seq + 1 : 0; | |
1492 | mac_new_seq = zmac->loc_seq < MAX(seq1, seq2) ? MAX(seq1, seq2) | |
1493 | : zmac->loc_seq; | |
1494 | } | |
6336e12b | 1495 | |
7cbae20a PR |
1496 | if (local_inactive) |
1497 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1498 | else | |
1499 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
1500 | ||
1501 | /* Mark Router flag (R-bit) */ | |
1502 | if (is_router) | |
1503 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1504 | else | |
1505 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
1506 | ||
7c0e4dc6 AK |
1507 | /* if zebra and dataplane don't agree this is a sync entry |
1508 | * re-install in the dataplane */ | |
1509 | new_static = zebra_evpn_neigh_is_static(n); | |
1510 | if (dp_static != new_static) | |
1511 | inform_dataplane = true; | |
7cbae20a PR |
1512 | |
1513 | /* Check old and/or new MAC detected as duplicate mark | |
1514 | * the neigh as duplicate | |
1515 | */ | |
1516 | if (zebra_evpn_ip_inherit_dad_from_mac(zvrf, old_zmac, zmac, n)) { | |
1517 | flog_warn( | |
1518 | EC_ZEBRA_DUP_IP_INHERIT_DETECTED, | |
ef7b8be4 DL |
1519 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during local update, inherit duplicate from MAC", |
1520 | zevpn->vni, macaddr, &n->ip); | |
7cbae20a | 1521 | } |
6336e12b | 1522 | |
7cbae20a PR |
1523 | /* For IP Duplicate Address Detection (DAD) is trigger, |
1524 | * when the event is extended mobility based on scenario-B | |
1525 | * from the draft, IP/Neigh's MAC binding changed and | |
1526 | * neigh's previous state was remote. | |
1527 | */ | |
1528 | if (neigh_mac_change && neigh_was_remote) | |
1529 | do_dad = true; | |
6336e12b | 1530 | |
7cbae20a PR |
1531 | zebra_evpn_dup_addr_detect_for_neigh(zvrf, n, vtep_ip, do_dad, |
1532 | &neigh_on_hold, true); | |
6336e12b | 1533 | |
7cbae20a PR |
1534 | if (inform_dataplane) |
1535 | zebra_evpn_sync_neigh_dp_install(n, false /* set_inactive */, | |
1536 | false /* force_clear_static */, | |
1537 | __func__); | |
6336e12b | 1538 | |
7cbae20a PR |
1539 | /* Before we program this in BGP, we need to check if MAC is locally |
1540 | * learnt. If not, force neighbor to be inactive and reset its seq. | |
1541 | */ | |
1542 | if (!CHECK_FLAG(zmac->flags, ZEBRA_MAC_LOCAL)) { | |
1543 | zebra_evpn_local_neigh_update_log( | |
1544 | "local", n, is_router, local_inactive, false, false, | |
1545 | inform_dataplane, false, "auto-mac"); | |
1546 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
1547 | n->loc_seq = 0; | |
1548 | zmac->loc_seq = mac_new_seq; | |
1549 | return 0; | |
1550 | } | |
6336e12b | 1551 | |
7cbae20a PR |
1552 | zebra_evpn_local_neigh_update_log("local", n, is_router, local_inactive, |
1553 | false, false, inform_dataplane, true, | |
1554 | created ? "created" : "updated"); | |
6336e12b | 1555 | |
7cbae20a PR |
1556 | /* If the MAC's sequence number has changed, inform the MAC and all |
1557 | * neighbors associated with the MAC to BGP, else just inform this | |
1558 | * neighbor. | |
1559 | */ | |
1560 | if (upd_mac_seq && zmac->loc_seq != mac_new_seq) { | |
1561 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1562 | zlog_debug( | |
ef7b8be4 DL |
1563 | "Seq changed for MAC %pEA VNI %u - old %u new %u", |
1564 | macaddr, zevpn->vni, | |
1565 | zmac->loc_seq, mac_new_seq); | |
7cbae20a PR |
1566 | zmac->loc_seq = mac_new_seq; |
1567 | if (zebra_evpn_mac_send_add_to_client(zevpn->vni, macaddr, | |
1568 | zmac->flags, | |
1569 | zmac->loc_seq, zmac->es)) | |
1570 | return -1; | |
1571 | zebra_evpn_process_neigh_on_local_mac_change(zevpn, zmac, 1, | |
1572 | 0 /*es_change*/); | |
1573 | return 0; | |
1574 | } | |
6336e12b | 1575 | |
7cbae20a | 1576 | n->loc_seq = zmac->loc_seq; |
6336e12b | 1577 | |
7cbae20a PR |
1578 | if (!neigh_on_hold) { |
1579 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
1580 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
1581 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
1582 | new_bgp_ready); | |
1583 | } else { | |
1584 | if (IS_ZEBRA_DEBUG_VXLAN) | |
1585 | zlog_debug(" Neighbor on hold not sending"); | |
1586 | } | |
1587 | return 0; | |
1588 | } | |
6336e12b | 1589 | |
f6371c34 DS |
1590 | int zebra_evpn_remote_neigh_update(struct zebra_evpn *zevpn, |
1591 | struct interface *ifp, | |
1a3bd37f MS |
1592 | const struct ipaddr *ip, |
1593 | const struct ethaddr *macaddr, | |
7cbae20a PR |
1594 | uint16_t state) |
1595 | { | |
72de4110 | 1596 | struct zebra_neigh *n = NULL; |
3198b2b3 | 1597 | struct zebra_mac *zmac = NULL; |
6336e12b | 1598 | |
7cbae20a PR |
1599 | /* If the neighbor is unknown, there is no further action. */ |
1600 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
1601 | if (!n) | |
1602 | return 0; | |
6336e12b | 1603 | |
7cbae20a PR |
1604 | /* If a remote entry, see if it needs to be refreshed */ |
1605 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1606 | #ifdef GNU_LINUX | |
1607 | if (state & NUD_STALE) | |
1608 | zebra_evpn_rem_neigh_install(zevpn, n, | |
1609 | false /*was_static*/); | |
1610 | #endif | |
6336e12b | 1611 | } else { |
7cbae20a PR |
1612 | /* We got a "remote" neighbor notification for an entry |
1613 | * we think is local. This can happen in a multihoming | |
1614 | * scenario - but only if the MAC is already "remote". | |
1615 | * Just mark our entry as "remote". | |
6336e12b | 1616 | */ |
7cbae20a PR |
1617 | zmac = zebra_evpn_mac_lookup(zevpn, macaddr); |
1618 | if (!zmac || !CHECK_FLAG(zmac->flags, ZEBRA_MAC_REMOTE)) { | |
1619 | zlog_debug( | |
ef7b8be4 DL |
1620 | "Ignore remote neigh %pIA (MAC %pEA) on L2-VNI %u - MAC unknown or local", |
1621 | &n->ip, macaddr, zevpn->vni); | |
7cbae20a PR |
1622 | return -1; |
1623 | } | |
6336e12b | 1624 | |
7cbae20a PR |
1625 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ALL_LOCAL_FLAGS); |
1626 | SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
1627 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
1628 | n->r_vtep_ip = zmac->fwd_info.r_vtep_ip; | |
6336e12b PR |
1629 | } |
1630 | ||
7cbae20a | 1631 | return 0; |
6336e12b PR |
1632 | } |
1633 | ||
7cbae20a PR |
1634 | /* Notify Neighbor entries to the Client, skips the GW entry */ |
1635 | static void | |
1636 | zebra_evpn_send_neigh_hash_entry_to_client(struct hash_bucket *bucket, | |
1637 | void *arg) | |
6336e12b | 1638 | { |
7cbae20a | 1639 | struct mac_walk_ctx *wctx = arg; |
72de4110 | 1640 | struct zebra_neigh *zn = bucket->data; |
3198b2b3 | 1641 | struct zebra_mac *zmac = NULL; |
6336e12b | 1642 | |
7cbae20a | 1643 | if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_DEF_GW)) |
6336e12b | 1644 | return; |
6336e12b | 1645 | |
7cbae20a PR |
1646 | if (CHECK_FLAG(zn->flags, ZEBRA_NEIGH_LOCAL) |
1647 | && IS_ZEBRA_NEIGH_ACTIVE(zn)) { | |
1648 | zmac = zebra_evpn_mac_lookup(wctx->zevpn, &zn->emac); | |
1649 | if (!zmac) | |
1650 | return; | |
6336e12b | 1651 | |
7cbae20a PR |
1652 | zebra_evpn_neigh_send_add_to_client(wctx->zevpn->vni, &zn->ip, |
1653 | &zn->emac, zn->mac, | |
1654 | zn->flags, zn->loc_seq); | |
1655 | } | |
6336e12b PR |
1656 | } |
1657 | ||
7cbae20a | 1658 | /* Iterator of a specific EVPN */ |
f6371c34 | 1659 | void zebra_evpn_send_neigh_to_client(struct zebra_evpn *zevpn) |
6336e12b | 1660 | { |
7cbae20a | 1661 | struct neigh_walk_ctx wctx; |
6336e12b | 1662 | |
6006b807 | 1663 | memset(&wctx, 0, sizeof(wctx)); |
7cbae20a | 1664 | wctx.zevpn = zevpn; |
6336e12b | 1665 | |
7cbae20a PR |
1666 | hash_iterate(zevpn->neigh_table, |
1667 | zebra_evpn_send_neigh_hash_entry_to_client, &wctx); | |
6336e12b PR |
1668 | } |
1669 | ||
7cbae20a | 1670 | void zebra_evpn_clear_dup_neigh_hash(struct hash_bucket *bucket, void *ctxt) |
6336e12b | 1671 | { |
7cbae20a | 1672 | struct neigh_walk_ctx *wctx = ctxt; |
72de4110 | 1673 | struct zebra_neigh *nbr; |
f6371c34 | 1674 | struct zebra_evpn *zevpn; |
7cbae20a | 1675 | char buf[INET6_ADDRSTRLEN]; |
6336e12b | 1676 | |
72de4110 | 1677 | nbr = (struct zebra_neigh *)bucket->data; |
7cbae20a PR |
1678 | if (!nbr) |
1679 | return; | |
6336e12b | 1680 | |
7cbae20a | 1681 | zevpn = wctx->zevpn; |
6336e12b | 1682 | |
7cbae20a PR |
1683 | if (!CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
1684 | return; | |
6336e12b | 1685 | |
7cbae20a PR |
1686 | if (IS_ZEBRA_DEBUG_VXLAN) { |
1687 | ipaddr2str(&nbr->ip, buf, sizeof(buf)); | |
1688 | zlog_debug("%s: clear neigh %s dup state, flags 0x%x seq %u", | |
1689 | __func__, buf, nbr->flags, nbr->loc_seq); | |
1690 | } | |
6336e12b PR |
1691 | |
1692 | UNSET_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE); | |
1693 | nbr->dad_count = 0; | |
1694 | nbr->detect_start_time.tv_sec = 0; | |
1695 | nbr->detect_start_time.tv_usec = 0; | |
1696 | nbr->dad_dup_detect_time = 0; | |
7cbae20a | 1697 | THREAD_OFF(nbr->dad_ip_auto_recovery_timer); |
6336e12b | 1698 | |
6336e12b | 1699 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_LOCAL)) { |
7cbae20a PR |
1700 | zebra_evpn_neigh_send_add_to_client(zevpn->vni, &nbr->ip, |
1701 | &nbr->emac, nbr->mac, | |
1702 | nbr->flags, nbr->loc_seq); | |
1703 | } else if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_REMOTE)) { | |
6336e12b PR |
1704 | zebra_evpn_rem_neigh_install(zevpn, nbr, false /*was_static*/); |
1705 | } | |
6336e12b PR |
1706 | } |
1707 | ||
7cbae20a PR |
1708 | /* |
1709 | * Print a specific neighbor entry. | |
1710 | */ | |
72de4110 DS |
1711 | void zebra_evpn_print_neigh(struct zebra_neigh *n, void *ctxt, |
1712 | json_object *json) | |
6336e12b | 1713 | { |
7cbae20a PR |
1714 | struct vty *vty; |
1715 | char buf1[ETHER_ADDR_STRLEN]; | |
1716 | char buf2[INET6_ADDRSTRLEN]; | |
1717 | const char *type_str; | |
1718 | const char *state_str; | |
1719 | bool flags_present = false; | |
1720 | struct zebra_vrf *zvrf = NULL; | |
1721 | struct timeval detect_start_time = {0, 0}; | |
1722 | char timebuf[MONOTIME_STRLEN]; | |
1723 | char thread_buf[THREAD_TIMER_STRLEN]; | |
a05111ba DS |
1724 | time_t uptime; |
1725 | char up_str[MONOTIME_STRLEN]; | |
6336e12b | 1726 | |
7cbae20a | 1727 | zvrf = zebra_vrf_get_evpn(); |
a05111ba DS |
1728 | uptime = monotime(NULL); |
1729 | uptime -= n->uptime; | |
1730 | ||
1731 | frrtime_to_interval(uptime, up_str, sizeof(up_str)); | |
1732 | ||
7cbae20a PR |
1733 | ipaddr2str(&n->ip, buf2, sizeof(buf2)); |
1734 | prefix_mac2str(&n->emac, buf1, sizeof(buf1)); | |
1735 | type_str = CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL) ? "local" : "remote"; | |
1736 | state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive"; | |
1737 | vty = (struct vty *)ctxt; | |
1738 | if (json == NULL) { | |
1739 | bool sync_info = false; | |
6336e12b | 1740 | |
7cbae20a PR |
1741 | vty_out(vty, "IP: %s\n", |
1742 | ipaddr2str(&n->ip, buf2, sizeof(buf2))); | |
1743 | vty_out(vty, " Type: %s\n", type_str); | |
1744 | vty_out(vty, " State: %s\n", state_str); | |
a05111ba | 1745 | vty_out(vty, " Uptime: %s\n", up_str); |
7cbae20a PR |
1746 | vty_out(vty, " MAC: %s\n", |
1747 | prefix_mac2str(&n->emac, buf1, sizeof(buf1))); | |
1748 | vty_out(vty, " Sync-info:"); | |
1749 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) { | |
1750 | vty_out(vty, " local-inactive"); | |
1751 | sync_info = true; | |
1752 | } | |
1753 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY)) { | |
1754 | vty_out(vty, " peer-proxy"); | |
1755 | sync_info = true; | |
1756 | } | |
1757 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) { | |
1758 | vty_out(vty, " peer-active"); | |
1759 | sync_info = true; | |
1760 | } | |
1761 | if (n->hold_timer) { | |
1762 | vty_out(vty, " (ht: %s)", | |
1763 | thread_timer_to_hhmmss(thread_buf, | |
1764 | sizeof(thread_buf), | |
1765 | n->hold_timer)); | |
1766 | sync_info = true; | |
1767 | } | |
1768 | if (!sync_info) | |
1769 | vty_out(vty, " -"); | |
1770 | vty_out(vty, "\n"); | |
1771 | } else { | |
a05111ba | 1772 | json_object_string_add(json, "uptime", up_str); |
7cbae20a PR |
1773 | json_object_string_add(json, "ip", buf2); |
1774 | json_object_string_add(json, "type", type_str); | |
1775 | json_object_string_add(json, "state", state_str); | |
1776 | json_object_string_add(json, "mac", buf1); | |
1777 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) | |
1778 | json_object_boolean_true_add(json, "localInactive"); | |
1779 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_PROXY)) | |
1780 | json_object_boolean_true_add(json, "peerProxy"); | |
1781 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ES_PEER_ACTIVE)) | |
1782 | json_object_boolean_true_add(json, "peerActive"); | |
1783 | if (n->hold_timer) | |
1784 | json_object_string_add( | |
1785 | json, "peerActiveHold", | |
1786 | thread_timer_to_hhmmss(thread_buf, | |
1787 | sizeof(thread_buf), | |
1788 | n->hold_timer)); | |
6336e12b | 1789 | } |
7cbae20a PR |
1790 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { |
1791 | if (n->mac->es) { | |
1792 | if (json) | |
1793 | json_object_string_add(json, "remoteEs", | |
1794 | n->mac->es->esi_str); | |
1795 | else | |
1796 | vty_out(vty, " Remote ES: %s\n", | |
1797 | n->mac->es->esi_str); | |
1798 | } else { | |
1799 | if (json) | |
08edf9c6 DA |
1800 | json_object_string_addf(json, "remoteVtep", |
1801 | "%pI4", &n->r_vtep_ip); | |
7cbae20a | 1802 | else |
9bcef951 MS |
1803 | vty_out(vty, " Remote VTEP: %pI4\n", |
1804 | &n->r_vtep_ip); | |
7cbae20a | 1805 | } |
6336e12b | 1806 | } |
7cbae20a PR |
1807 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) { |
1808 | if (!json) { | |
1809 | vty_out(vty, " Flags: Default-gateway"); | |
1810 | flags_present = true; | |
1811 | } else | |
1812 | json_object_boolean_true_add(json, "defaultGateway"); | |
6336e12b | 1813 | } |
7cbae20a PR |
1814 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG)) { |
1815 | if (!json) { | |
1816 | vty_out(vty, | |
1817 | flags_present ? " ,Router" : " Flags: Router"); | |
1818 | flags_present = true; | |
1819 | } | |
1820 | } | |
1821 | if (json == NULL) { | |
1822 | if (flags_present) | |
1823 | vty_out(vty, "\n"); | |
1824 | vty_out(vty, " Local Seq: %u Remote Seq: %u\n", n->loc_seq, | |
1825 | n->rem_seq); | |
6336e12b | 1826 | |
7cbae20a PR |
1827 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) { |
1828 | vty_out(vty, " Duplicate, detected at %s", | |
1829 | time_to_string(n->dad_dup_detect_time, | |
1830 | timebuf)); | |
1831 | } else if (n->dad_count) { | |
1832 | monotime_since(&n->detect_start_time, | |
1833 | &detect_start_time); | |
1834 | if (detect_start_time.tv_sec <= zvrf->dad_time) { | |
1835 | time_to_string(n->detect_start_time.tv_sec, | |
1836 | timebuf); | |
1837 | vty_out(vty, | |
1838 | " Duplicate detection started at %s, detection count %u\n", | |
1839 | timebuf, n->dad_count); | |
1840 | } | |
1841 | } | |
1842 | } else { | |
1843 | json_object_int_add(json, "localSequence", n->loc_seq); | |
1844 | json_object_int_add(json, "remoteSequence", n->rem_seq); | |
1845 | json_object_int_add(json, "detectionCount", n->dad_count); | |
1846 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1847 | json_object_boolean_true_add(json, "isDuplicate"); | |
1848 | else | |
1849 | json_object_boolean_false_add(json, "isDuplicate"); | |
1850 | } | |
6336e12b PR |
1851 | } |
1852 | ||
7cbae20a | 1853 | void zebra_evpn_print_neigh_hdr(struct vty *vty, struct neigh_walk_ctx *wctx) |
6336e12b | 1854 | { |
7cbae20a PR |
1855 | vty_out(vty, "Flags: I=local-inactive, P=peer-active, X=peer-proxy\n"); |
1856 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %s\n", -wctx->addr_width, | |
1857 | "Neighbor", "Type", "Flags", "State", "MAC", "Remote ES/VTEP", | |
1858 | "Seq #'s"); | |
6336e12b PR |
1859 | } |
1860 | ||
72de4110 DS |
1861 | static char *zebra_evpn_print_neigh_flags(struct zebra_neigh *n, |
1862 | char *flags_buf, | |
1863 | uint32_t flags_buf_sz) | |
6336e12b | 1864 | { |
7cbae20a PR |
1865 | snprintf(flags_buf, flags_buf_sz, "%s%s%s", |
1866 | (n->flags & ZEBRA_NEIGH_ES_PEER_ACTIVE) ? | |
1867 | "P" : "", | |
1868 | (n->flags & ZEBRA_NEIGH_ES_PEER_PROXY) ? | |
1869 | "X" : "", | |
1870 | (n->flags & ZEBRA_NEIGH_LOCAL_INACTIVE) ? | |
1871 | "I" : ""); | |
6336e12b | 1872 | |
7cbae20a | 1873 | return flags_buf; |
6336e12b PR |
1874 | } |
1875 | ||
7cbae20a PR |
1876 | /* |
1877 | * Print neighbor hash entry - called for display of all neighbors. | |
1878 | */ | |
1879 | void zebra_evpn_print_neigh_hash(struct hash_bucket *bucket, void *ctxt) | |
6336e12b | 1880 | { |
7cbae20a PR |
1881 | struct vty *vty; |
1882 | json_object *json_evpn = NULL, *json_row = NULL; | |
72de4110 | 1883 | struct zebra_neigh *n; |
7cbae20a PR |
1884 | char buf1[ETHER_ADDR_STRLEN]; |
1885 | char buf2[INET6_ADDRSTRLEN]; | |
9bcef951 | 1886 | char addr_buf[PREFIX_STRLEN]; |
7cbae20a PR |
1887 | struct neigh_walk_ctx *wctx = ctxt; |
1888 | const char *state_str; | |
1889 | char flags_buf[6]; | |
6336e12b | 1890 | |
7cbae20a PR |
1891 | vty = wctx->vty; |
1892 | json_evpn = wctx->json; | |
72de4110 | 1893 | n = (struct zebra_neigh *)bucket->data; |
6336e12b | 1894 | |
7cbae20a PR |
1895 | if (json_evpn) |
1896 | json_row = json_object_new_object(); | |
6336e12b | 1897 | |
7cbae20a PR |
1898 | prefix_mac2str(&n->emac, buf1, sizeof(buf1)); |
1899 | ipaddr2str(&n->ip, buf2, sizeof(buf2)); | |
1900 | state_str = IS_ZEBRA_NEIGH_ACTIVE(n) ? "active" : "inactive"; | |
1901 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
1902 | if (wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1903 | return; | |
6336e12b | 1904 | |
7cbae20a PR |
1905 | if (json_evpn == NULL) { |
1906 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %u/%u\n", | |
1907 | -wctx->addr_width, buf2, "local", | |
1908 | zebra_evpn_print_neigh_flags(n, flags_buf, | |
1909 | sizeof(flags_buf)), state_str, buf1, | |
1910 | "", n->loc_seq, n->rem_seq); | |
1911 | } else { | |
1912 | json_object_string_add(json_row, "type", "local"); | |
1913 | json_object_string_add(json_row, "state", state_str); | |
1914 | json_object_string_add(json_row, "mac", buf1); | |
1915 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) | |
1916 | json_object_boolean_true_add(json_row, | |
1917 | "defaultGateway"); | |
1918 | json_object_int_add(json_row, "localSequence", | |
1919 | n->loc_seq); | |
1920 | json_object_int_add(json_row, "remoteSequence", | |
1921 | n->rem_seq); | |
1922 | json_object_int_add(json_row, "detectionCount", | |
1923 | n->dad_count); | |
1924 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1925 | json_object_boolean_true_add(json_row, | |
1926 | "isDuplicate"); | |
1927 | else | |
1928 | json_object_boolean_false_add(json_row, | |
1929 | "isDuplicate"); | |
1930 | } | |
1931 | wctx->count++; | |
1932 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
1933 | if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1934 | && !IPV4_ADDR_SAME(&n->r_vtep_ip, &wctx->r_vtep_ip)) | |
6336e12b PR |
1935 | return; |
1936 | ||
7cbae20a PR |
1937 | if (json_evpn == NULL) { |
1938 | if ((wctx->flags & SHOW_REMOTE_NEIGH_FROM_VTEP) | |
1939 | && (wctx->count == 0)) | |
1940 | zebra_evpn_print_neigh_hdr(vty, wctx); | |
9bcef951 MS |
1941 | |
1942 | if (n->mac->es == NULL) | |
1943 | inet_ntop(AF_INET, &n->r_vtep_ip, | |
1944 | addr_buf, sizeof(addr_buf)); | |
1945 | ||
7cbae20a PR |
1946 | vty_out(vty, "%*s %-6s %-5s %-8s %-17s %-30s %u/%u\n", |
1947 | -wctx->addr_width, buf2, "remote", | |
1948 | zebra_evpn_print_neigh_flags(n, flags_buf, | |
1949 | sizeof(flags_buf)), state_str, buf1, | |
9bcef951 | 1950 | n->mac->es ? n->mac->es->esi_str : addr_buf, |
7cbae20a PR |
1951 | n->loc_seq, n->rem_seq); |
1952 | } else { | |
1953 | json_object_string_add(json_row, "type", "remote"); | |
1954 | json_object_string_add(json_row, "state", state_str); | |
1955 | json_object_string_add(json_row, "mac", buf1); | |
1956 | if (n->mac->es) | |
1957 | json_object_string_add(json_row, "remoteEs", | |
1958 | n->mac->es->esi_str); | |
1959 | else | |
08edf9c6 DA |
1960 | json_object_string_addf(json_row, "remoteVtep", |
1961 | "%pI4", &n->r_vtep_ip); | |
7cbae20a PR |
1962 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW)) |
1963 | json_object_boolean_true_add(json_row, | |
1964 | "defaultGateway"); | |
1965 | json_object_int_add(json_row, "localSequence", | |
1966 | n->loc_seq); | |
1967 | json_object_int_add(json_row, "remoteSequence", | |
1968 | n->rem_seq); | |
1969 | json_object_int_add(json_row, "detectionCount", | |
1970 | n->dad_count); | |
1971 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
1972 | json_object_boolean_true_add(json_row, | |
1973 | "isDuplicate"); | |
1974 | else | |
1975 | json_object_boolean_false_add(json_row, | |
1976 | "isDuplicate"); | |
1977 | } | |
1978 | wctx->count++; | |
6336e12b | 1979 | } |
6336e12b | 1980 | |
7cbae20a PR |
1981 | if (json_evpn) |
1982 | json_object_object_add(json_evpn, buf2, json_row); | |
6336e12b PR |
1983 | } |
1984 | ||
7cbae20a PR |
1985 | /* |
1986 | * Print neighbor hash entry in detail - called for display of all neighbors. | |
1987 | */ | |
1988 | void zebra_evpn_print_neigh_hash_detail(struct hash_bucket *bucket, void *ctxt) | |
6336e12b | 1989 | { |
7cbae20a PR |
1990 | struct vty *vty; |
1991 | json_object *json_evpn = NULL, *json_row = NULL; | |
72de4110 | 1992 | struct zebra_neigh *n; |
7cbae20a PR |
1993 | char buf[INET6_ADDRSTRLEN]; |
1994 | struct neigh_walk_ctx *wctx = ctxt; | |
6336e12b | 1995 | |
7cbae20a PR |
1996 | vty = wctx->vty; |
1997 | json_evpn = wctx->json; | |
72de4110 | 1998 | n = (struct zebra_neigh *)bucket->data; |
7cbae20a PR |
1999 | if (!n) |
2000 | return; | |
6336e12b | 2001 | |
7cbae20a PR |
2002 | ipaddr2str(&n->ip, buf, sizeof(buf)); |
2003 | if (json_evpn) | |
2004 | json_row = json_object_new_object(); | |
6336e12b | 2005 | |
7cbae20a | 2006 | zebra_evpn_print_neigh(n, vty, json_row); |
6336e12b | 2007 | |
7cbae20a PR |
2008 | if (json_evpn) |
2009 | json_object_object_add(json_evpn, buf, json_row); | |
6336e12b PR |
2010 | } |
2011 | ||
7cbae20a | 2012 | void zebra_evpn_print_dad_neigh_hash(struct hash_bucket *bucket, void *ctxt) |
6336e12b | 2013 | { |
72de4110 | 2014 | struct zebra_neigh *nbr; |
6336e12b | 2015 | |
72de4110 | 2016 | nbr = (struct zebra_neigh *)bucket->data; |
7cbae20a PR |
2017 | if (!nbr) |
2018 | return; | |
6336e12b | 2019 | |
7cbae20a PR |
2020 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
2021 | zebra_evpn_print_neigh_hash(bucket, ctxt); | |
6336e12b PR |
2022 | } |
2023 | ||
7cbae20a PR |
2024 | void zebra_evpn_print_dad_neigh_hash_detail(struct hash_bucket *bucket, |
2025 | void *ctxt) | |
6336e12b | 2026 | { |
72de4110 | 2027 | struct zebra_neigh *nbr; |
6336e12b | 2028 | |
72de4110 | 2029 | nbr = (struct zebra_neigh *)bucket->data; |
7cbae20a PR |
2030 | if (!nbr) |
2031 | return; | |
6336e12b | 2032 | |
7cbae20a PR |
2033 | if (CHECK_FLAG(nbr->flags, ZEBRA_NEIGH_DUPLICATE)) |
2034 | zebra_evpn_print_neigh_hash_detail(bucket, ctxt); | |
6336e12b | 2035 | } |
036daaca | 2036 | |
f6371c34 | 2037 | void zebra_evpn_neigh_remote_macip_add(struct zebra_evpn *zevpn, |
272e11bf | 2038 | struct zebra_vrf *zvrf, |
1a3bd37f | 2039 | const struct ipaddr *ipaddr, |
3198b2b3 DS |
2040 | struct zebra_mac *mac, |
2041 | struct in_addr vtep_ip, uint8_t flags, | |
2042 | uint32_t seq) | |
036daaca | 2043 | { |
72de4110 | 2044 | struct zebra_neigh *n; |
036daaca | 2045 | int update_neigh = 0; |
3198b2b3 | 2046 | struct zebra_mac *old_mac = NULL; |
036daaca PR |
2047 | bool old_static = false; |
2048 | bool do_dad = false; | |
2049 | bool is_dup_detect = false; | |
2050 | bool is_router; | |
2051 | ||
2bdd4461 | 2052 | assert(mac); |
036daaca PR |
2053 | is_router = !!CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); |
2054 | ||
2055 | /* Check if the remote neighbor itself is unknown or has a | |
2056 | * change. If so, create or update and then install the entry. | |
2057 | */ | |
2058 | n = zebra_evpn_neigh_lookup(zevpn, ipaddr); | |
2059 | if (!n || !CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE) | |
2060 | || is_router != !!CHECK_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG) | |
2061 | || (memcmp(&n->emac, &mac->macaddr, sizeof(struct ethaddr)) != 0) | |
2062 | || !IPV4_ADDR_SAME(&n->r_vtep_ip, &vtep_ip) || seq != n->rem_seq) | |
2063 | update_neigh = 1; | |
2064 | ||
2065 | if (update_neigh) { | |
2066 | if (!n) { | |
2067 | n = zebra_evpn_neigh_add(zevpn, ipaddr, &mac->macaddr, | |
2068 | mac, 0); | |
036daaca | 2069 | } else { |
036daaca PR |
2070 | /* When host moves but changes its (MAC,IP) |
2071 | * binding, BGP may install a MACIP entry that | |
2072 | * corresponds to "older" location of the host | |
2073 | * in transient situations (because {IP1,M1} | |
2074 | * is a different route from {IP1,M2}). Check | |
2075 | * the sequence number and ignore this update | |
2076 | * if appropriate. | |
2077 | */ | |
16de1338 AK |
2078 | |
2079 | if (!zebra_evpn_neigh_is_bgp_seq_ok( | |
2080 | zevpn, n, &mac->macaddr, seq, false)) | |
036daaca | 2081 | return; |
036daaca PR |
2082 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { |
2083 | old_static = zebra_evpn_neigh_is_static(n); | |
2084 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
2085 | zlog_debug( | |
ef7b8be4 DL |
2086 | "sync->remote neigh vni %u ip %pIA mac %pEA seq %d f0x%x", |
2087 | n->zevpn->vni, &n->ip, &n->emac, | |
036daaca | 2088 | seq, n->flags); |
036daaca | 2089 | if (IS_ZEBRA_NEIGH_ACTIVE(n)) |
fb8f609d AK |
2090 | zebra_evpn_neigh_send_del_to_client( |
2091 | zevpn->vni, &n->ip, &n->emac, | |
2092 | n->flags, n->state, | |
2093 | false /*force*/); | |
bda6be1c | 2094 | zebra_evpn_neigh_clear_sync_info(n); |
036daaca PR |
2095 | } |
2096 | if (memcmp(&n->emac, &mac->macaddr, | |
2097 | sizeof(struct ethaddr)) | |
2098 | != 0) { | |
2099 | /* update neigh list for macs */ | |
2100 | old_mac = | |
2101 | zebra_evpn_mac_lookup(zevpn, &n->emac); | |
2102 | if (old_mac) { | |
2103 | listnode_delete(old_mac->neigh_list, n); | |
2104 | n->mac = NULL; | |
2105 | zebra_evpn_deref_ip2mac(zevpn, old_mac); | |
2106 | } | |
2107 | n->mac = mac; | |
2108 | listnode_add_sort(mac->neigh_list, n); | |
2109 | memcpy(&n->emac, &mac->macaddr, ETH_ALEN); | |
2110 | ||
2111 | /* Check Neigh's curent state is local | |
2112 | * (this is the case where neigh/host has moved | |
2113 | * from L->R) and check previous detction | |
2114 | * started via local learning. | |
2115 | * | |
2116 | * RFC-7432: A PE/VTEP that detects a MAC | |
2117 | * mobilit event via local learning starts | |
2118 | * an M-second timer. | |
2119 | * VTEP-IP or seq. change along is not | |
2120 | * considered for dup. detection. | |
2121 | * | |
2122 | * Mobilty event scenario-B IP-MAC binding | |
2123 | * changed. | |
2124 | */ | |
2125 | if ((!CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) | |
2126 | && n->dad_count) | |
2127 | do_dad = true; | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | /* Set "remote" forwarding info. */ | |
2132 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ALL_LOCAL_FLAGS); | |
2133 | n->r_vtep_ip = vtep_ip; | |
2134 | SET_FLAG(n->flags, ZEBRA_NEIGH_REMOTE); | |
2135 | ||
2136 | /* Set router flag (R-bit) to this Neighbor entry */ | |
2137 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG)) | |
2138 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2139 | else | |
2140 | UNSET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2141 | ||
2142 | /* Check old or new MAC detected as duplicate, | |
2143 | * inherit duplicate flag to this neigh. | |
2144 | */ | |
2145 | if (zebra_evpn_ip_inherit_dad_from_mac(zvrf, old_mac, mac, n)) { | |
2146 | flog_warn( | |
2147 | EC_ZEBRA_DUP_IP_INHERIT_DETECTED, | |
ef7b8be4 DL |
2148 | "VNI %u: MAC %pEA IP %pIA detected as duplicate during remote update, inherit duplicate from MAC", |
2149 | zevpn->vni, &mac->macaddr, &n->ip); | |
036daaca PR |
2150 | } |
2151 | ||
2152 | /* Check duplicate address detection for IP */ | |
2153 | zebra_evpn_dup_addr_detect_for_neigh( | |
2154 | zvrf, n, n->r_vtep_ip, do_dad, &is_dup_detect, false); | |
2155 | /* Install the entry. */ | |
2156 | if (!is_dup_detect) | |
2157 | zebra_evpn_rem_neigh_install(zevpn, n, old_static); | |
2158 | } | |
2159 | ||
036daaca PR |
2160 | /* Update seq number. */ |
2161 | n->rem_seq = seq; | |
2162 | } | |
224315f3 | 2163 | |
f6371c34 DS |
2164 | int zebra_evpn_neigh_gw_macip_add(struct interface *ifp, |
2165 | struct zebra_evpn *zevpn, struct ipaddr *ip, | |
3198b2b3 | 2166 | struct zebra_mac *mac) |
224315f3 | 2167 | { |
72de4110 | 2168 | struct zebra_neigh *n; |
224315f3 | 2169 | |
2bdd4461 | 2170 | assert(mac); |
224315f3 PR |
2171 | |
2172 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
97511d01 | 2173 | if (!n) |
224315f3 | 2174 | n = zebra_evpn_neigh_add(zevpn, ip, &mac->macaddr, mac, 0); |
224315f3 PR |
2175 | |
2176 | /* Set "local" forwarding info. */ | |
2177 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL); | |
2178 | ZEBRA_NEIGH_SET_ACTIVE(n); | |
2179 | memcpy(&n->emac, &mac->macaddr, ETH_ALEN); | |
2180 | n->ifindex = ifp->ifindex; | |
2181 | ||
2182 | /* Only advertise in BGP if the knob is enabled */ | |
2183 | if (advertise_gw_macip_enabled(zevpn)) { | |
2184 | ||
224315f3 PR |
2185 | SET_FLAG(n->flags, ZEBRA_NEIGH_DEF_GW); |
2186 | /* Set Router flag (R-bit) */ | |
2187 | if (ip->ipa_type == IPADDR_V6) | |
2188 | SET_FLAG(n->flags, ZEBRA_NEIGH_ROUTER_FLAG); | |
2189 | ||
2190 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2191 | zlog_debug( | |
ef7b8be4 | 2192 | "SVI %s(%u) L2-VNI %u, sending GW MAC %pEA IP %pIA add to BGP with flags 0x%x", |
224315f3 | 2193 | ifp->name, ifp->ifindex, zevpn->vni, |
ef7b8be4 | 2194 | &mac->macaddr, ip, n->flags); |
224315f3 PR |
2195 | |
2196 | zebra_evpn_neigh_send_add_to_client( | |
2197 | zevpn->vni, ip, &n->emac, n->mac, n->flags, n->loc_seq); | |
2198 | } else if (advertise_svi_macip_enabled(zevpn)) { | |
2199 | ||
2200 | SET_FLAG(n->flags, ZEBRA_NEIGH_SVI_IP); | |
2201 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2202 | zlog_debug( | |
ef7b8be4 | 2203 | "SVI %s(%u) L2-VNI %u, sending SVI MAC %pEA IP %pIA add to BGP with flags 0x%x", |
224315f3 | 2204 | ifp->name, ifp->ifindex, zevpn->vni, |
ef7b8be4 | 2205 | &mac->macaddr, ip, n->flags); |
224315f3 PR |
2206 | |
2207 | zebra_evpn_neigh_send_add_to_client( | |
2208 | zevpn->vni, ip, &n->emac, n->mac, n->flags, n->loc_seq); | |
2209 | } | |
2210 | ||
2211 | return 0; | |
2212 | } | |
32fe7dfd | 2213 | |
f6371c34 | 2214 | void zebra_evpn_neigh_remote_uninstall(struct zebra_evpn *zevpn, |
72de4110 DS |
2215 | struct zebra_vrf *zvrf, |
2216 | struct zebra_neigh *n, | |
3198b2b3 | 2217 | struct zebra_mac *mac, |
1a3bd37f | 2218 | const struct ipaddr *ipaddr) |
32fe7dfd | 2219 | { |
32fe7dfd PR |
2220 | if (zvrf->dad_freeze && CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE) |
2221 | && CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE) | |
2222 | && (memcmp(n->emac.octet, mac->macaddr.octet, ETH_ALEN) == 0)) { | |
2223 | struct interface *vlan_if; | |
2224 | ||
2225 | vlan_if = zevpn_map_to_svi(zevpn); | |
2226 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2227 | zlog_debug( | |
ef7b8be4 DL |
2228 | "%s: IP %pIA (flags 0x%x intf %s) is remote and duplicate, read kernel for local entry", |
2229 | __func__, ipaddr, n->flags, | |
2230 | vlan_if ? vlan_if->name : "Unknown"); | |
32fe7dfd PR |
2231 | if (vlan_if) |
2232 | neigh_read_specific_ip(ipaddr, vlan_if); | |
2233 | } | |
2234 | ||
2235 | /* When the MAC changes for an IP, it is possible the | |
2236 | * client may update the new MAC before trying to delete the | |
2237 | * "old" neighbor (as these are two different MACIP routes). | |
2238 | * Do the delete only if the MAC matches. | |
2239 | */ | |
2240 | if (!memcmp(n->emac.octet, mac->macaddr.octet, ETH_ALEN)) { | |
2241 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL)) { | |
2242 | zebra_evpn_sync_neigh_del(n); | |
2243 | } else if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
2244 | zebra_evpn_neigh_uninstall(zevpn, n); | |
2245 | zebra_evpn_neigh_del(zevpn, n); | |
2246 | zebra_evpn_deref_ip2mac(zevpn, mac); | |
2247 | } | |
0653625d SW |
2248 | } else { |
2249 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2250 | zlog_debug( | |
2251 | "%s: IP %pIA MAC %pEA (flags 0x%x) found doesn't match MAC %pEA, ignoring Neigh DEL", | |
2252 | __func__, ipaddr, &n->emac, n->flags, | |
2253 | &mac->macaddr); | |
32fe7dfd PR |
2254 | } |
2255 | } | |
33064a62 | 2256 | |
f6371c34 | 2257 | int zebra_evpn_neigh_del_ip(struct zebra_evpn *zevpn, const struct ipaddr *ip) |
33064a62 | 2258 | { |
72de4110 | 2259 | struct zebra_neigh *n; |
3198b2b3 | 2260 | struct zebra_mac *zmac; |
33064a62 PR |
2261 | bool old_bgp_ready; |
2262 | bool new_bgp_ready; | |
33064a62 PR |
2263 | struct zebra_vrf *zvrf; |
2264 | ||
2265 | /* If entry doesn't exist, nothing to do. */ | |
2266 | n = zebra_evpn_neigh_lookup(zevpn, ip); | |
2267 | if (!n) | |
2268 | return 0; | |
2269 | ||
2270 | zmac = zebra_evpn_mac_lookup(zevpn, &n->emac); | |
2271 | if (!zmac) { | |
2272 | if (IS_ZEBRA_DEBUG_VXLAN) | |
2273 | zlog_debug( | |
ef7b8be4 DL |
2274 | "Trying to del a neigh %pIA without a mac %pEA on VNI %u", |
2275 | ip, &n->emac, | |
33064a62 PR |
2276 | zevpn->vni); |
2277 | ||
2278 | return 0; | |
2279 | } | |
2280 | ||
2281 | /* If it is a remote entry, the kernel has aged this out or someone has | |
32367e7a | 2282 | * deleted it, it needs to be re-installed as FRR is the owner. |
33064a62 PR |
2283 | */ |
2284 | if (CHECK_FLAG(n->flags, ZEBRA_NEIGH_REMOTE)) { | |
2285 | zebra_evpn_rem_neigh_install(zevpn, n, false /*was_static*/); | |
2286 | return 0; | |
2287 | } | |
2288 | ||
2289 | /* if this is a sync entry it cannot be dropped re-install it in | |
2290 | * the dataplane | |
2291 | */ | |
2292 | old_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
2293 | if (zebra_evpn_neigh_is_static(n)) { | |
2294 | if (IS_ZEBRA_DEBUG_EVPN_MH_NEIGH) | |
ef7b8be4 DL |
2295 | zlog_debug("re-add sync neigh vni %u ip %pIA mac %pEA 0x%x", |
2296 | n->zevpn->vni, &n->ip, &n->emac, | |
33064a62 PR |
2297 | n->flags); |
2298 | ||
2299 | if (!CHECK_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE)) | |
2300 | SET_FLAG(n->flags, ZEBRA_NEIGH_LOCAL_INACTIVE); | |
2301 | /* inform-bgp about change in local-activity if any */ | |
2302 | new_bgp_ready = zebra_evpn_neigh_is_ready_for_bgp(n); | |
2303 | zebra_evpn_neigh_send_add_del_to_client(n, old_bgp_ready, | |
2304 | new_bgp_ready); | |
2305 | ||
2306 | /* re-install the entry in the kernel */ | |
2307 | zebra_evpn_sync_neigh_dp_install(n, false /* set_inactive */, | |
2308 | false /* force_clear_static */, | |
2309 | __func__); | |
2310 | ||
2311 | return 0; | |
2312 | } | |
2313 | ||
096f7609 | 2314 | zvrf = zevpn->vxlan_if->vrf->info; |
33064a62 PR |
2315 | if (!zvrf) { |
2316 | zlog_debug("%s: VNI %u vrf lookup failed.", __func__, | |
2317 | zevpn->vni); | |
2318 | return -1; | |
2319 | } | |
2320 | ||
2321 | /* In case of feeze action, if local neigh is in duplicate state, | |
2322 | * Mark the Neigh as inactive before sending delete request to BGPd, | |
2323 | * If BGPd has remote entry, it will re-install | |
2324 | */ | |
2325 | if (zvrf->dad_freeze && CHECK_FLAG(n->flags, ZEBRA_NEIGH_DUPLICATE)) | |
2326 | ZEBRA_NEIGH_SET_INACTIVE(n); | |
2327 | ||
2328 | /* Remove neighbor from BGP. */ | |
2329 | zebra_evpn_neigh_send_del_to_client(zevpn->vni, &n->ip, &n->emac, | |
2330 | n->flags, n->state, | |
2331 | false /* force */); | |
2332 | ||
2333 | /* Delete this neighbor entry. */ | |
2334 | zebra_evpn_neigh_del(zevpn, n); | |
2335 | ||
2336 | /* see if the AUTO mac needs to be deleted */ | |
2337 | if (CHECK_FLAG(zmac->flags, ZEBRA_MAC_AUTO) | |
243b74ed | 2338 | && !zebra_evpn_mac_in_use(zmac)) |
33064a62 PR |
2339 | zebra_evpn_mac_del(zevpn, zmac); |
2340 | ||
2341 | return 0; | |
2342 | } |