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eac6e3f0 RW |
1 | /* |
2 | * Copyright (C) 2016 by Open Source Routing. | |
3 | * | |
180fc2cd RW |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
eac6e3f0 | 8 | * |
180fc2cd | 9 | * This program is distributed in the hope that it will be useful, but |
eac6e3f0 RW |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
180fc2cd RW |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; see the file COPYING; if not, write to the | |
16 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
17 | * MA 02110-1301 USA | |
eac6e3f0 RW |
18 | */ |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include "prefix.h" | |
23 | #include "stream.h" | |
24 | #include "memory.h" | |
25 | #include "zclient.h" | |
26 | #include "command.h" | |
27 | #include "network.h" | |
28 | #include "linklist.h" | |
ce549947 | 29 | #include "mpls.h" |
eac6e3f0 RW |
30 | |
31 | #include "ldpd.h" | |
32 | #include "ldpe.h" | |
33 | #include "lde.h" | |
e1894ff7 | 34 | #include "ldp_sync.h" |
eac6e3f0 RW |
35 | #include "log.h" |
36 | #include "ldp_debug.h" | |
37 | ||
38 | static void ifp2kif(struct interface *, struct kif *); | |
39 | static void ifc2kaddr(struct interface *, struct connected *, | |
40 | struct kaddr *); | |
bad6b0e7 | 41 | static int ldp_zebra_send_mpls_labels(int, struct kroute *); |
121f9dee | 42 | static int ldp_router_id_update(ZAPI_CALLBACK_ARGS); |
121f9dee QY |
43 | static int ldp_interface_address_add(ZAPI_CALLBACK_ARGS); |
44 | static int ldp_interface_address_delete(ZAPI_CALLBACK_ARGS); | |
45 | static int ldp_zebra_read_route(ZAPI_CALLBACK_ARGS); | |
46 | static int ldp_zebra_read_pw_status_update(ZAPI_CALLBACK_ARGS); | |
eac6e3f0 | 47 | static void ldp_zebra_connected(struct zclient *); |
2d1aa1e8 | 48 | static void ldp_zebra_filter_update(struct access_list *access); |
eac6e3f0 | 49 | |
e1894ff7 KS |
50 | static void ldp_zebra_opaque_register(void); |
51 | static void ldp_zebra_opaque_unregister(void); | |
52 | static int ldp_sync_zebra_send_announce(void); | |
53 | static int ldp_zebra_opaque_msg_handler(ZAPI_CALLBACK_ARGS); | |
e1894ff7 KS |
54 | static void ldp_sync_zebra_init(void); |
55 | ||
eac6e3f0 RW |
56 | static struct zclient *zclient; |
57 | ||
58 | static void | |
59 | ifp2kif(struct interface *ifp, struct kif *kif) | |
60 | { | |
61 | memset(kif, 0, sizeof(*kif)); | |
62 | strlcpy(kif->ifname, ifp->name, sizeof(kif->ifname)); | |
63 | kif->ifindex = ifp->ifindex; | |
988ded8d | 64 | kif->operative = if_is_operative(ifp); |
26519d8c | 65 | if (ifp->ll_type == ZEBRA_LLT_ETHER) |
9bff8057 | 66 | memcpy(kif->mac, ifp->hw_addr, ETH_ALEN); |
eac6e3f0 RW |
67 | } |
68 | ||
69 | static void | |
70 | ifc2kaddr(struct interface *ifp, struct connected *ifc, struct kaddr *ka) | |
71 | { | |
72 | memset(ka, 0, sizeof(*ka)); | |
9cf67225 | 73 | strlcpy(ka->ifname, ifp->name, sizeof(ka->ifname)); |
eac6e3f0 RW |
74 | ka->ifindex = ifp->ifindex; |
75 | ka->af = ifc->address->family; | |
76 | ka->prefixlen = ifc->address->prefixlen; | |
77 | ||
78 | switch (ka->af) { | |
79 | case AF_INET: | |
80 | ka->addr.v4 = ifc->address->u.prefix4; | |
81 | if (ifc->destination) | |
82 | ka->dstbrd.v4 = ifc->destination->u.prefix4; | |
83 | break; | |
84 | case AF_INET6: | |
85 | ka->addr.v6 = ifc->address->u.prefix6; | |
86 | if (ifc->destination) | |
87 | ka->dstbrd.v6 = ifc->destination->u.prefix6; | |
88 | break; | |
89 | default: | |
90 | break; | |
91 | } | |
92 | } | |
93 | ||
87b5f1b7 RW |
94 | void |
95 | pw2zpw(struct l2vpn_pw *pw, struct zapi_pw *zpw) | |
96 | { | |
97 | memset(zpw, 0, sizeof(*zpw)); | |
98 | strlcpy(zpw->ifname, pw->ifname, sizeof(zpw->ifname)); | |
99 | zpw->ifindex = pw->ifindex; | |
100 | zpw->type = pw->l2vpn->pw_type; | |
101 | zpw->af = pw->af; | |
102 | zpw->nexthop.ipv6 = pw->addr.v6; | |
103 | zpw->local_label = NO_LABEL; | |
104 | zpw->remote_label = NO_LABEL; | |
105 | if (pw->flags & F_PW_CWORD) | |
106 | zpw->flags = F_PSEUDOWIRE_CWORD; | |
107 | zpw->data.ldp.lsr_id = pw->lsr_id; | |
108 | zpw->data.ldp.pwid = pw->pwid; | |
109 | strlcpy(zpw->data.ldp.vpn_name, pw->l2vpn->name, | |
110 | sizeof(zpw->data.ldp.vpn_name)); | |
111 | } | |
112 | ||
e1894ff7 KS |
113 | static void |
114 | ldp_zebra_opaque_register(void) | |
115 | { | |
116 | zclient_register_opaque(zclient, LDP_IGP_SYNC_IF_STATE_REQUEST); | |
077d336a RW |
117 | zclient_register_opaque(zclient, LDP_RLFA_REGISTER); |
118 | zclient_register_opaque(zclient, LDP_RLFA_UNREGISTER_ALL); | |
e1894ff7 KS |
119 | } |
120 | ||
121 | static void | |
122 | ldp_zebra_opaque_unregister(void) | |
123 | { | |
124 | zclient_unregister_opaque(zclient, LDP_IGP_SYNC_IF_STATE_REQUEST); | |
077d336a RW |
125 | zclient_unregister_opaque(zclient, LDP_RLFA_REGISTER); |
126 | zclient_unregister_opaque(zclient, LDP_RLFA_UNREGISTER_ALL); | |
e1894ff7 KS |
127 | } |
128 | ||
129 | int | |
130 | ldp_sync_zebra_send_state_update(struct ldp_igp_sync_if_state *state) | |
131 | { | |
7cfdb485 DS |
132 | if (zclient_send_opaque(zclient, LDP_IGP_SYNC_IF_STATE_UPDATE, |
133 | (const uint8_t *)state, sizeof(*state)) | |
134 | == ZCLIENT_SEND_FAILURE) | |
135 | return -1; | |
136 | else | |
137 | return 0; | |
e1894ff7 KS |
138 | } |
139 | ||
140 | static int | |
141 | ldp_sync_zebra_send_announce(void) | |
142 | { | |
143 | struct ldp_igp_sync_announce announce; | |
144 | announce.proto = ZEBRA_ROUTE_LDP; | |
145 | ||
7cfdb485 DS |
146 | if (zclient_send_opaque(zclient, LDP_IGP_SYNC_ANNOUNCE_UPDATE, |
147 | (const uint8_t *)&announce, sizeof(announce)) | |
148 | == ZCLIENT_SEND_FAILURE) | |
149 | return -1; | |
150 | else | |
151 | return 0; | |
e1894ff7 KS |
152 | } |
153 | ||
077d336a RW |
154 | int ldp_zebra_send_rlfa_labels(struct zapi_rlfa_response *rlfa_labels) |
155 | { | |
156 | int ret; | |
157 | ||
158 | ret = zclient_send_opaque(zclient, LDP_RLFA_LABELS, | |
159 | (const uint8_t *)rlfa_labels, | |
160 | sizeof(*rlfa_labels)); | |
161 | if (ret == ZCLIENT_SEND_FAILURE) { | |
162 | log_warn("failed to send RLFA labels to IGP"); | |
163 | return -1; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
e1894ff7 KS |
169 | static int |
170 | ldp_zebra_opaque_msg_handler(ZAPI_CALLBACK_ARGS) | |
171 | { | |
172 | struct stream *s; | |
173 | struct zapi_opaque_msg info; | |
174 | struct ldp_igp_sync_if_state_req state_req; | |
077d336a RW |
175 | struct zapi_rlfa_igp igp; |
176 | struct zapi_rlfa_request rlfa; | |
e1894ff7 KS |
177 | |
178 | s = zclient->ibuf; | |
179 | ||
180 | if (zclient_opaque_decode(s, &info) != 0) | |
181 | return -1; | |
182 | ||
183 | switch (info.type) { | |
184 | case LDP_IGP_SYNC_IF_STATE_REQUEST: | |
185 | STREAM_GET(&state_req, s, sizeof(state_req)); | |
186 | main_imsg_compose_ldpe(IMSG_LDP_SYNC_IF_STATE_REQUEST, 0, &state_req, | |
187 | sizeof(state_req)); | |
188 | break; | |
077d336a RW |
189 | case LDP_RLFA_REGISTER: |
190 | STREAM_GET(&rlfa, s, sizeof(rlfa)); | |
191 | main_imsg_compose_both(IMSG_RLFA_REG, &rlfa, sizeof(rlfa)); | |
192 | break; | |
193 | case LDP_RLFA_UNREGISTER_ALL: | |
194 | STREAM_GET(&igp, s, sizeof(igp)); | |
195 | main_imsg_compose_both(IMSG_RLFA_UNREG_ALL, &igp, sizeof(igp)); | |
196 | break; | |
e1894ff7 KS |
197 | default: |
198 | break; | |
199 | } | |
200 | ||
201 | stream_failure: | |
202 | return 0; | |
203 | } | |
204 | ||
e1894ff7 KS |
205 | static void |
206 | ldp_sync_zebra_init(void) | |
207 | { | |
208 | ldp_sync_zebra_send_announce(); | |
e1894ff7 KS |
209 | } |
210 | ||
ce549947 | 211 | static int |
bad6b0e7 | 212 | ldp_zebra_send_mpls_labels(int cmd, struct kroute *kr) |
ce549947 | 213 | { |
bad6b0e7 | 214 | struct zapi_labels zl = {}; |
4945002d | 215 | struct zapi_nexthop *znh; |
ce549947 | 216 | |
8963e0c8 | 217 | if (kr->local_label < MPLS_LABEL_RESERVED_MAX) |
ce549947 RW |
218 | return (0); |
219 | ||
88d88a9c | 220 | debug_zebra_out("prefix %s/%u nexthop %s ifindex %u labels %s/%s (%s)", |
ce549947 | 221 | log_addr(kr->af, &kr->prefix), kr->prefixlen, |
88d88a9c RW |
222 | log_addr(kr->af, &kr->nexthop), kr->ifindex, |
223 | log_label(kr->local_label), log_label(kr->remote_label), | |
ce549947 RW |
224 | (cmd == ZEBRA_MPLS_LABELS_ADD) ? "add" : "delete"); |
225 | ||
bad6b0e7 | 226 | zl.type = ZEBRA_LSP_LDP; |
b3c49d0e RW |
227 | zl.local_label = kr->local_label; |
228 | ||
229 | /* Set prefix. */ | |
8963e0c8 RW |
230 | if (kr->remote_label != NO_LABEL) { |
231 | SET_FLAG(zl.message, ZAPI_LABELS_FTN); | |
232 | zl.route.prefix.family = kr->af; | |
233 | switch (kr->af) { | |
234 | case AF_INET: | |
235 | zl.route.prefix.u.prefix4 = kr->prefix.v4; | |
236 | break; | |
237 | case AF_INET6: | |
238 | zl.route.prefix.u.prefix6 = kr->prefix.v6; | |
239 | break; | |
240 | default: | |
241 | fatalx("ldp_zebra_send_mpls_labels: unknown af"); | |
242 | } | |
243 | zl.route.prefix.prefixlen = kr->prefixlen; | |
244 | zl.route.type = kr->route_type; | |
245 | zl.route.instance = kr->route_instance; | |
ce549947 | 246 | } |
8963e0c8 RW |
247 | |
248 | /* | |
249 | * For broken LSPs, instruct the forwarding plane to pop the top-level | |
250 | * label and forward packets normally. This is a best-effort attempt | |
251 | * to deliver labeled IP packets to their final destination (instead of | |
252 | * dropping them). | |
253 | */ | |
254 | if (kr->remote_label == NO_LABEL) | |
255 | kr->remote_label = MPLS_LABEL_IMPLICIT_NULL; | |
b3c49d0e RW |
256 | |
257 | /* Set nexthop. */ | |
ea6b290b RW |
258 | zl.nexthop_num = 1; |
259 | znh = &zl.nexthops[0]; | |
b3c49d0e RW |
260 | switch (kr->af) { |
261 | case AF_INET: | |
4945002d | 262 | znh->gate.ipv4 = kr->nexthop.v4; |
b3c49d0e | 263 | if (kr->ifindex) |
ea6b290b | 264 | znh->type = NEXTHOP_TYPE_IPV4_IFINDEX; |
b3c49d0e | 265 | else |
ea6b290b | 266 | znh->type = NEXTHOP_TYPE_IPV4; |
b3c49d0e RW |
267 | break; |
268 | case AF_INET6: | |
4945002d | 269 | znh->gate.ipv6 = kr->nexthop.v6; |
b3c49d0e | 270 | if (kr->ifindex) |
ea6b290b | 271 | znh->type = NEXTHOP_TYPE_IPV6_IFINDEX; |
b3c49d0e | 272 | else |
ea6b290b | 273 | znh->type = NEXTHOP_TYPE_IPV6; |
b3c49d0e RW |
274 | break; |
275 | default: | |
276 | break; | |
277 | } | |
ea6b290b | 278 | znh->ifindex = kr->ifindex; |
4945002d MS |
279 | znh->label_num = 1; |
280 | znh->labels[0] = kr->remote_label; | |
ce549947 | 281 | |
7cfdb485 DS |
282 | if (zebra_send_mpls_labels(zclient, cmd, &zl) == ZCLIENT_SEND_FAILURE) |
283 | return -1; | |
284 | ||
285 | return 0; | |
ce549947 RW |
286 | } |
287 | ||
eac6e3f0 RW |
288 | int |
289 | kr_change(struct kroute *kr) | |
290 | { | |
bad6b0e7 | 291 | return (ldp_zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_ADD, kr)); |
eac6e3f0 RW |
292 | } |
293 | ||
294 | int | |
295 | kr_delete(struct kroute *kr) | |
296 | { | |
bad6b0e7 | 297 | return (ldp_zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_DELETE, kr)); |
eac6e3f0 RW |
298 | } |
299 | ||
300 | int | |
87b5f1b7 | 301 | kmpw_add(struct zapi_pw *zpw) |
eac6e3f0 | 302 | { |
87b5f1b7 RW |
303 | debug_zebra_out("pseudowire %s nexthop %s (add)", |
304 | zpw->ifname, log_addr(zpw->af, (union ldpd_addr *)&zpw->nexthop)); | |
305 | ||
7cfdb485 DS |
306 | return zebra_send_pw(zclient, ZEBRA_PW_ADD, zpw) |
307 | == ZCLIENT_SEND_FAILURE; | |
eac6e3f0 RW |
308 | } |
309 | ||
310 | int | |
87b5f1b7 | 311 | kmpw_del(struct zapi_pw *zpw) |
eac6e3f0 | 312 | { |
87b5f1b7 RW |
313 | debug_zebra_out("pseudowire %s nexthop %s (del)", |
314 | zpw->ifname, log_addr(zpw->af, (union ldpd_addr *)&zpw->nexthop)); | |
315 | ||
7cfdb485 DS |
316 | return zebra_send_pw(zclient, ZEBRA_PW_DELETE, zpw) |
317 | == ZCLIENT_SEND_FAILURE; | |
87b5f1b7 RW |
318 | } |
319 | ||
320 | int | |
321 | kmpw_set(struct zapi_pw *zpw) | |
322 | { | |
323 | debug_zebra_out("pseudowire %s nexthop %s labels %u/%u (set)", | |
324 | zpw->ifname, log_addr(zpw->af, (union ldpd_addr *)&zpw->nexthop), | |
325 | zpw->local_label, zpw->remote_label); | |
326 | ||
7cfdb485 DS |
327 | return zebra_send_pw(zclient, ZEBRA_PW_SET, zpw) |
328 | == ZCLIENT_SEND_FAILURE; | |
87b5f1b7 RW |
329 | } |
330 | ||
331 | int | |
332 | kmpw_unset(struct zapi_pw *zpw) | |
333 | { | |
334 | debug_zebra_out("pseudowire %s nexthop %s (unset)", | |
335 | zpw->ifname, log_addr(zpw->af, (union ldpd_addr *)&zpw->nexthop)); | |
336 | ||
7cfdb485 DS |
337 | return zebra_send_pw(zclient, ZEBRA_PW_UNSET, zpw) |
338 | == ZCLIENT_SEND_FAILURE; | |
eac6e3f0 RW |
339 | } |
340 | ||
341 | void | |
342 | kif_redistribute(const char *ifname) | |
343 | { | |
f4e14fdb RW |
344 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
345 | struct listnode *cnode; | |
eac6e3f0 RW |
346 | struct interface *ifp; |
347 | struct connected *ifc; | |
348 | struct kif kif; | |
349 | struct kaddr ka; | |
350 | ||
451fda4f | 351 | FOR_ALL_INTERFACES (vrf, ifp) { |
eac6e3f0 RW |
352 | if (ifname && strcmp(ifname, ifp->name) != 0) |
353 | continue; | |
354 | ||
355 | ifp2kif(ifp, &kif); | |
52b530fc | 356 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 RW |
357 | |
358 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, ifc)) { | |
359 | ifc2kaddr(ifp, ifc, &ka); | |
360 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, | |
361 | sizeof(ka)); | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
366 | static int | |
121f9dee | 367 | ldp_router_id_update(ZAPI_CALLBACK_ARGS) |
eac6e3f0 RW |
368 | { |
369 | struct prefix router_id; | |
370 | ||
371 | zebra_router_id_update_read(zclient->ibuf, &router_id); | |
372 | ||
373 | if (bad_addr_v4(router_id.u.prefix4)) | |
374 | return (0); | |
375 | ||
903a7226 | 376 | debug_zebra_in("router-id update %pI4", &router_id.u.prefix4); |
eac6e3f0 RW |
377 | |
378 | global.rtr_id.s_addr = router_id.u.prefix4.s_addr; | |
379 | main_imsg_compose_ldpe(IMSG_RTRID_UPDATE, 0, &global.rtr_id, | |
380 | sizeof(global.rtr_id)); | |
381 | ||
382 | return (0); | |
383 | } | |
384 | ||
385 | static int | |
ef7bd2a3 | 386 | ldp_ifp_create(struct interface *ifp) |
eac6e3f0 | 387 | { |
eac6e3f0 RW |
388 | struct kif kif; |
389 | ||
eac6e3f0 RW |
390 | debug_zebra_in("interface add %s index %d mtu %d", ifp->name, |
391 | ifp->ifindex, ifp->mtu); | |
392 | ||
393 | ifp2kif(ifp, &kif); | |
52b530fc | 394 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 | 395 | |
ef7bd2a3 | 396 | return 0; |
eac6e3f0 RW |
397 | } |
398 | ||
399 | static int | |
3c3c3252 | 400 | ldp_ifp_destroy(struct interface *ifp) |
eac6e3f0 | 401 | { |
9cf67225 | 402 | struct kif kif; |
eac6e3f0 | 403 | |
eac6e3f0 RW |
404 | debug_zebra_in("interface delete %s index %d mtu %d", ifp->name, |
405 | ifp->ifindex, ifp->mtu); | |
406 | ||
9cf67225 RW |
407 | ifp2kif(ifp, &kif); |
408 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); | |
eac6e3f0 RW |
409 | |
410 | return (0); | |
411 | } | |
412 | ||
413 | static int | |
e1894ff7 | 414 | ldp_interface_status_change(struct interface *ifp) |
eac6e3f0 | 415 | { |
eac6e3f0 RW |
416 | struct listnode *node; |
417 | struct connected *ifc; | |
418 | struct kif kif; | |
419 | struct kaddr ka; | |
eac6e3f0 | 420 | |
eac6e3f0 RW |
421 | debug_zebra_in("interface %s state update", ifp->name); |
422 | ||
423 | ifp2kif(ifp, &kif); | |
52b530fc | 424 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 | 425 | |
988ded8d | 426 | if (if_is_operative(ifp)) { |
eac6e3f0 RW |
427 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { |
428 | ifc2kaddr(ifp, ifc, &ka); | |
429 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, | |
430 | sizeof(ka)); | |
431 | } | |
432 | } else { | |
433 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
434 | ifc2kaddr(ifp, ifc, &ka); | |
435 | main_imsg_compose_ldpe(IMSG_DELADDR, 0, &ka, | |
436 | sizeof(ka)); | |
437 | } | |
438 | } | |
439 | ||
440 | return (0); | |
441 | } | |
ddbf3e60 | 442 | |
b0b69e59 DS |
443 | static int ldp_ifp_up(struct interface *ifp) |
444 | { | |
e1894ff7 | 445 | return ldp_interface_status_change(ifp); |
b0b69e59 | 446 | } |
ddbf3e60 | 447 | |
b0b69e59 DS |
448 | static int ldp_ifp_down(struct interface *ifp) |
449 | { | |
e1894ff7 | 450 | return ldp_interface_status_change(ifp); |
ddbf3e60 | 451 | } |
eac6e3f0 RW |
452 | |
453 | static int | |
121f9dee | 454 | ldp_interface_address_add(ZAPI_CALLBACK_ARGS) |
eac6e3f0 RW |
455 | { |
456 | struct connected *ifc; | |
457 | struct interface *ifp; | |
458 | struct kaddr ka; | |
459 | ||
121f9dee | 460 | ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
eac6e3f0 RW |
461 | if (ifc == NULL) |
462 | return (0); | |
463 | ||
464 | ifp = ifc->ifp; | |
465 | ifc2kaddr(ifp, ifc, &ka); | |
466 | ||
467 | /* Filter invalid addresses. */ | |
468 | if (bad_addr(ka.af, &ka.addr)) | |
469 | return (0); | |
470 | ||
9cf67225 RW |
471 | debug_zebra_in("address add %s/%u interface %s", |
472 | log_addr(ka.af, &ka.addr), ka.prefixlen, ifp->name); | |
eac6e3f0 RW |
473 | |
474 | /* notify ldpe about new address */ | |
475 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, sizeof(ka)); | |
476 | ||
477 | return (0); | |
478 | } | |
479 | ||
480 | static int | |
121f9dee | 481 | ldp_interface_address_delete(ZAPI_CALLBACK_ARGS) |
eac6e3f0 RW |
482 | { |
483 | struct connected *ifc; | |
484 | struct interface *ifp; | |
485 | struct kaddr ka; | |
486 | ||
121f9dee | 487 | ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id); |
eac6e3f0 RW |
488 | if (ifc == NULL) |
489 | return (0); | |
490 | ||
491 | ifp = ifc->ifp; | |
492 | ifc2kaddr(ifp, ifc, &ka); | |
721c0857 | 493 | connected_free(&ifc); |
eac6e3f0 RW |
494 | |
495 | /* Filter invalid addresses. */ | |
496 | if (bad_addr(ka.af, &ka.addr)) | |
497 | return (0); | |
498 | ||
9cf67225 RW |
499 | debug_zebra_in("address delete %s/%u interface %s", |
500 | log_addr(ka.af, &ka.addr), ka.prefixlen, ifp->name); | |
eac6e3f0 RW |
501 | |
502 | /* notify ldpe about removed address */ | |
503 | main_imsg_compose_ldpe(IMSG_DELADDR, 0, &ka, sizeof(ka)); | |
504 | ||
505 | return (0); | |
506 | } | |
507 | ||
508 | static int | |
121f9dee | 509 | ldp_zebra_read_route(ZAPI_CALLBACK_ARGS) |
eac6e3f0 | 510 | { |
74489921 RW |
511 | struct zapi_route api; |
512 | struct zapi_nexthop *api_nh; | |
eac6e3f0 | 513 | struct kroute kr; |
74489921 RW |
514 | int i, add = 0; |
515 | ||
516 | if (zapi_route_decode(zclient->ibuf, &api) < 0) | |
517 | return -1; | |
518 | ||
519 | /* we completely ignore srcdest routes for now. */ | |
520 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
521 | return (0); | |
eac6e3f0 RW |
522 | |
523 | memset(&kr, 0, sizeof(kr)); | |
74489921 RW |
524 | kr.af = api.prefix.family; |
525 | switch (kr.af) { | |
526 | case AF_INET: | |
527 | kr.prefix.v4 = api.prefix.u.prefix4; | |
528 | break; | |
529 | case AF_INET6: | |
530 | kr.prefix.v6 = api.prefix.u.prefix6; | |
531 | break; | |
532 | default: | |
533 | break; | |
534 | } | |
535 | kr.prefixlen = api.prefix.prefixlen; | |
e132dea0 RW |
536 | kr.route_type = api.type; |
537 | kr.route_instance = api.instance; | |
eac6e3f0 | 538 | |
74489921 | 539 | switch (api.type) { |
a695cc7b | 540 | case ZEBRA_ROUTE_CONNECT: |
eac6e3f0 | 541 | kr.flags |= F_CONNECTED; |
a695cc7b RW |
542 | break; |
543 | case ZEBRA_ROUTE_BGP: | |
544 | /* LDP should follow the IGP and ignore BGP routes */ | |
545 | return (0); | |
546 | default: | |
547 | break; | |
548 | } | |
549 | ||
eac6e3f0 RW |
550 | if (bad_addr(kr.af, &kr.prefix) || |
551 | (kr.af == AF_INET6 && IN6_IS_SCOPE_EMBED(&kr.prefix.v6))) | |
552 | return (0); | |
553 | ||
121f9dee | 554 | if (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD) |
1f2ff5b5 RW |
555 | add = 1; |
556 | ||
74489921 | 557 | if (api.nexthop_num == 0) |
1f2ff5b5 RW |
558 | debug_zebra_in("route %s %s/%d (%s)", (add) ? "add" : "delete", |
559 | log_addr(kr.af, &kr.prefix), kr.prefixlen, | |
74489921 | 560 | zebra_route_string(api.type)); |
eac6e3f0 RW |
561 | |
562 | /* loop through all the nexthops */ | |
74489921 RW |
563 | for (i = 0; i < api.nexthop_num; i++) { |
564 | api_nh = &api.nexthops[i]; | |
cddef813 RW |
565 | switch (api_nh->type) { |
566 | case NEXTHOP_TYPE_IPV4: | |
567 | if (kr.af != AF_INET) | |
568 | continue; | |
569 | kr.nexthop.v4 = api_nh->gate.ipv4; | |
570 | kr.ifindex = 0; | |
571 | break; | |
572 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
573 | if (kr.af != AF_INET) | |
574 | continue; | |
74489921 | 575 | kr.nexthop.v4 = api_nh->gate.ipv4; |
cddef813 | 576 | kr.ifindex = api_nh->ifindex; |
eac6e3f0 | 577 | break; |
cddef813 RW |
578 | case NEXTHOP_TYPE_IPV6: |
579 | if (kr.af != AF_INET6) | |
580 | continue; | |
74489921 | 581 | kr.nexthop.v6 = api_nh->gate.ipv6; |
cddef813 | 582 | kr.ifindex = 0; |
eac6e3f0 | 583 | break; |
cddef813 RW |
584 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
585 | if (kr.af != AF_INET6) | |
586 | continue; | |
587 | kr.nexthop.v6 = api_nh->gate.ipv6; | |
588 | kr.ifindex = api_nh->ifindex; | |
589 | break; | |
590 | case NEXTHOP_TYPE_IFINDEX: | |
591 | if (!(kr.flags & F_CONNECTED)) | |
592 | continue; | |
eac6e3f0 | 593 | break; |
cddef813 RW |
594 | default: |
595 | continue; | |
eac6e3f0 | 596 | } |
eac6e3f0 | 597 | |
1f2ff5b5 RW |
598 | debug_zebra_in("route %s %s/%d nexthop %s ifindex %u (%s)", |
599 | (add) ? "add" : "delete", log_addr(kr.af, &kr.prefix), | |
600 | kr.prefixlen, log_addr(kr.af, &kr.nexthop), kr.ifindex, | |
74489921 | 601 | zebra_route_string(api.type)); |
1f2ff5b5 RW |
602 | |
603 | if (add) | |
eac6e3f0 RW |
604 | main_imsg_compose_lde(IMSG_NETWORK_ADD, 0, &kr, |
605 | sizeof(kr)); | |
eac6e3f0 RW |
606 | } |
607 | ||
8cb1fc45 | 608 | main_imsg_compose_lde(IMSG_NETWORK_UPDATE, 0, &kr, sizeof(kr)); |
134970a2 | 609 | |
eac6e3f0 RW |
610 | return (0); |
611 | } | |
612 | ||
87b5f1b7 RW |
613 | /* |
614 | * Receive PW status update from Zebra and send it to LDE process. | |
615 | */ | |
616 | static int | |
121f9dee | 617 | ldp_zebra_read_pw_status_update(ZAPI_CALLBACK_ARGS) |
87b5f1b7 RW |
618 | { |
619 | struct zapi_pw_status zpw; | |
620 | ||
121f9dee | 621 | zebra_read_pw_status_update(cmd, zclient, length, vrf_id, &zpw); |
87b5f1b7 | 622 | |
fd563cc7 KS |
623 | debug_zebra_in("pseudowire %s status %s 0x%x", zpw.ifname, |
624 | (zpw.status == PW_FORWARDING) ? "up" : "down", | |
625 | zpw.status); | |
87b5f1b7 RW |
626 | |
627 | main_imsg_compose_lde(IMSG_PW_UPDATE, 0, &zpw, sizeof(zpw)); | |
628 | ||
629 | return (0); | |
630 | } | |
631 | ||
eac6e3f0 RW |
632 | static void |
633 | ldp_zebra_connected(struct zclient *zclient) | |
634 | { | |
eac6e3f0 | 635 | zclient_send_reg_requests(zclient, VRF_DEFAULT); |
a695cc7b RW |
636 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, |
637 | ZEBRA_ROUTE_ALL, 0, VRF_DEFAULT); | |
638 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP6, | |
639 | ZEBRA_ROUTE_ALL, 0, VRF_DEFAULT); | |
e1894ff7 KS |
640 | |
641 | ldp_zebra_opaque_register(); | |
642 | ||
643 | ldp_sync_zebra_init(); | |
eac6e3f0 RW |
644 | } |
645 | ||
2d1aa1e8 | 646 | static void |
647 | ldp_zebra_filter_update(struct access_list *access) | |
648 | { | |
649 | struct ldp_access laccess; | |
650 | ||
651 | if (access && access->name[0] != '\0') { | |
652 | strlcpy(laccess.name, access->name, sizeof(laccess.name)); | |
653 | laccess.type = access->type; | |
654 | debug_evt("%s ACL update filter name %s type %d", __func__, | |
655 | access->name, access->type); | |
656 | ||
657 | main_imsg_compose_both(IMSG_FILTER_UPDATE, &laccess, | |
658 | sizeof(laccess)); | |
659 | } | |
660 | } | |
661 | ||
342213ea DS |
662 | extern struct zebra_privs_t ldpd_privs; |
663 | ||
eac6e3f0 RW |
664 | void |
665 | ldp_zebra_init(struct thread_master *master) | |
666 | { | |
138c5a74 DS |
667 | if_zapi_callbacks(ldp_ifp_create, ldp_ifp_up, |
668 | ldp_ifp_down, ldp_ifp_destroy); | |
669 | ||
eac6e3f0 | 670 | /* Set default values. */ |
26f63a1e | 671 | zclient = zclient_new(master, &zclient_options_default); |
342213ea | 672 | zclient_init(zclient, ZEBRA_ROUTE_LDP, 0, &ldpd_privs); |
eac6e3f0 RW |
673 | |
674 | /* set callbacks */ | |
675 | zclient->zebra_connected = ldp_zebra_connected; | |
676 | zclient->router_id_update = ldp_router_id_update; | |
eac6e3f0 RW |
677 | zclient->interface_address_add = ldp_interface_address_add; |
678 | zclient->interface_address_delete = ldp_interface_address_delete; | |
74489921 RW |
679 | zclient->redistribute_route_add = ldp_zebra_read_route; |
680 | zclient->redistribute_route_del = ldp_zebra_read_route; | |
87b5f1b7 | 681 | zclient->pw_status_update = ldp_zebra_read_pw_status_update; |
e1894ff7 | 682 | zclient->opaque_msg_handler = ldp_zebra_opaque_msg_handler; |
2d1aa1e8 | 683 | |
684 | /* Access list initialize. */ | |
685 | access_list_add_hook(ldp_zebra_filter_update); | |
686 | access_list_delete_hook(ldp_zebra_filter_update); | |
eac6e3f0 | 687 | } |
64dffe25 RW |
688 | |
689 | void | |
690 | ldp_zebra_destroy(void) | |
691 | { | |
e1894ff7 | 692 | ldp_zebra_opaque_unregister(); |
64dffe25 RW |
693 | zclient_stop(zclient); |
694 | zclient_free(zclient); | |
695 | zclient = NULL; | |
696 | } |