]>
Commit | Line | Data |
---|---|---|
eac6e3f0 RW |
1 | /* |
2 | * Copyright (C) 2016 by Open Source Routing. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eac6e3f0 RW |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "stream.h" | |
25 | #include "memory.h" | |
26 | #include "zclient.h" | |
27 | #include "command.h" | |
28 | #include "network.h" | |
29 | #include "linklist.h" | |
ce549947 | 30 | #include "mpls.h" |
eac6e3f0 RW |
31 | |
32 | #include "ldpd.h" | |
33 | #include "ldpe.h" | |
34 | #include "lde.h" | |
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 *); | |
ce549947 | 41 | static int zebra_send_mpls_labels(int, struct kroute *); |
eac6e3f0 RW |
42 | static int ldp_router_id_update(int, struct zclient *, zebra_size_t, |
43 | vrf_id_t); | |
44 | static int ldp_interface_add(int, struct zclient *, zebra_size_t, | |
45 | vrf_id_t); | |
46 | static int ldp_interface_delete(int, struct zclient *, zebra_size_t, | |
47 | vrf_id_t); | |
48 | static int ldp_interface_status_change(int command, struct zclient *, | |
49 | zebra_size_t, vrf_id_t); | |
50 | static int ldp_interface_address_add(int, struct zclient *, zebra_size_t, | |
51 | vrf_id_t); | |
52 | static int ldp_interface_address_delete(int, struct zclient *, | |
53 | zebra_size_t, vrf_id_t); | |
54 | static int ldp_zebra_read_route(int, struct zclient *, zebra_size_t, | |
55 | vrf_id_t); | |
56 | static void ldp_zebra_connected(struct zclient *); | |
57 | ||
58 | static struct zclient *zclient; | |
59 | ||
60 | static void | |
61 | ifp2kif(struct interface *ifp, struct kif *kif) | |
62 | { | |
63 | memset(kif, 0, sizeof(*kif)); | |
64 | strlcpy(kif->ifname, ifp->name, sizeof(kif->ifname)); | |
65 | kif->ifindex = ifp->ifindex; | |
988ded8d | 66 | kif->operative = if_is_operative(ifp); |
26519d8c RW |
67 | if (ifp->ll_type == ZEBRA_LLT_ETHER) |
68 | memcpy(kif->mac, ifp->hw_addr, ETHER_ADDR_LEN); | |
eac6e3f0 RW |
69 | } |
70 | ||
71 | static void | |
72 | ifc2kaddr(struct interface *ifp, struct connected *ifc, struct kaddr *ka) | |
73 | { | |
74 | memset(ka, 0, sizeof(*ka)); | |
9cf67225 | 75 | strlcpy(ka->ifname, ifp->name, sizeof(ka->ifname)); |
eac6e3f0 RW |
76 | ka->ifindex = ifp->ifindex; |
77 | ka->af = ifc->address->family; | |
78 | ka->prefixlen = ifc->address->prefixlen; | |
79 | ||
80 | switch (ka->af) { | |
81 | case AF_INET: | |
82 | ka->addr.v4 = ifc->address->u.prefix4; | |
83 | if (ifc->destination) | |
84 | ka->dstbrd.v4 = ifc->destination->u.prefix4; | |
85 | break; | |
86 | case AF_INET6: | |
87 | ka->addr.v6 = ifc->address->u.prefix6; | |
88 | if (ifc->destination) | |
89 | ka->dstbrd.v6 = ifc->destination->u.prefix6; | |
90 | break; | |
91 | default: | |
92 | break; | |
93 | } | |
94 | } | |
95 | ||
ce549947 RW |
96 | static int |
97 | zebra_send_mpls_labels(int cmd, struct kroute *kr) | |
98 | { | |
99 | struct stream *s; | |
100 | ||
101 | if (kr->local_label < MPLS_LABEL_RESERVED_MAX || | |
102 | kr->remote_label == NO_LABEL) | |
103 | return (0); | |
104 | ||
88d88a9c | 105 | debug_zebra_out("prefix %s/%u nexthop %s ifindex %u labels %s/%s (%s)", |
ce549947 | 106 | log_addr(kr->af, &kr->prefix), kr->prefixlen, |
88d88a9c RW |
107 | log_addr(kr->af, &kr->nexthop), kr->ifindex, |
108 | log_label(kr->local_label), log_label(kr->remote_label), | |
ce549947 RW |
109 | (cmd == ZEBRA_MPLS_LABELS_ADD) ? "add" : "delete"); |
110 | ||
111 | /* Reset stream. */ | |
112 | s = zclient->obuf; | |
113 | stream_reset(s); | |
114 | ||
115 | zclient_create_header(s, cmd, VRF_DEFAULT); | |
116 | stream_putc(s, ZEBRA_LSP_LDP); | |
117 | stream_putl(s, kr->af); | |
118 | switch (kr->af) { | |
119 | case AF_INET: | |
120 | stream_put_in_addr(s, &kr->prefix.v4); | |
121 | stream_putc(s, kr->prefixlen); | |
122 | stream_put_in_addr(s, &kr->nexthop.v4); | |
123 | break; | |
124 | case AF_INET6: | |
125 | stream_write(s, (u_char *)&kr->prefix.v6, 16); | |
126 | stream_putc(s, kr->prefixlen); | |
127 | stream_write(s, (u_char *)&kr->nexthop.v6, 16); | |
128 | break; | |
129 | default: | |
130 | fatalx("kr_change: unknown af"); | |
131 | } | |
88d88a9c | 132 | stream_putl(s, kr->ifindex); |
ce549947 RW |
133 | stream_putc(s, kr->priority); |
134 | stream_putl(s, kr->local_label); | |
135 | stream_putl(s, kr->remote_label); | |
136 | ||
137 | /* Put length at the first point of the stream. */ | |
138 | stream_putw_at(s, 0, stream_get_endp(s)); | |
139 | ||
140 | return (zclient_send_message(zclient)); | |
141 | } | |
142 | ||
eac6e3f0 RW |
143 | int |
144 | kr_change(struct kroute *kr) | |
145 | { | |
ce549947 | 146 | return (zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_ADD, kr)); |
eac6e3f0 RW |
147 | } |
148 | ||
149 | int | |
150 | kr_delete(struct kroute *kr) | |
151 | { | |
ce549947 | 152 | return (zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_DELETE, kr)); |
eac6e3f0 RW |
153 | } |
154 | ||
155 | int | |
156 | kmpw_set(struct kpw *kpw) | |
157 | { | |
158 | /* TODO */ | |
159 | return (0); | |
160 | } | |
161 | ||
162 | int | |
163 | kmpw_unset(struct kpw *kpw) | |
164 | { | |
165 | /* TODO */ | |
166 | return (0); | |
167 | } | |
168 | ||
169 | void | |
170 | kif_redistribute(const char *ifname) | |
171 | { | |
172 | struct listnode *node, *cnode; | |
173 | struct interface *ifp; | |
174 | struct connected *ifc; | |
175 | struct kif kif; | |
176 | struct kaddr ka; | |
177 | ||
178 | for (ALL_LIST_ELEMENTS_RO(vrf_iflist(VRF_DEFAULT), node, ifp)) { | |
179 | if (ifname && strcmp(ifname, ifp->name) != 0) | |
180 | continue; | |
181 | ||
182 | ifp2kif(ifp, &kif); | |
52b530fc | 183 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 RW |
184 | |
185 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, ifc)) { | |
186 | ifc2kaddr(ifp, ifc, &ka); | |
187 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, | |
188 | sizeof(ka)); | |
189 | } | |
190 | } | |
191 | } | |
192 | ||
193 | static int | |
194 | ldp_router_id_update(int command, struct zclient *zclient, zebra_size_t length, | |
195 | vrf_id_t vrf_id) | |
196 | { | |
197 | struct prefix router_id; | |
198 | ||
199 | zebra_router_id_update_read(zclient->ibuf, &router_id); | |
200 | ||
201 | if (bad_addr_v4(router_id.u.prefix4)) | |
202 | return (0); | |
203 | ||
204 | debug_zebra_in("router-id update %s", inet_ntoa(router_id.u.prefix4)); | |
205 | ||
206 | global.rtr_id.s_addr = router_id.u.prefix4.s_addr; | |
207 | main_imsg_compose_ldpe(IMSG_RTRID_UPDATE, 0, &global.rtr_id, | |
208 | sizeof(global.rtr_id)); | |
209 | ||
210 | return (0); | |
211 | } | |
212 | ||
213 | static int | |
214 | ldp_interface_add(int command, struct zclient *zclient, zebra_size_t length, | |
215 | vrf_id_t vrf_id) | |
216 | { | |
217 | struct interface *ifp; | |
218 | struct kif kif; | |
219 | ||
220 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); | |
221 | debug_zebra_in("interface add %s index %d mtu %d", ifp->name, | |
222 | ifp->ifindex, ifp->mtu); | |
223 | ||
224 | ifp2kif(ifp, &kif); | |
52b530fc | 225 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 RW |
226 | |
227 | return (0); | |
228 | } | |
229 | ||
230 | static int | |
231 | ldp_interface_delete(int command, struct zclient *zclient, zebra_size_t length, | |
232 | vrf_id_t vrf_id) | |
233 | { | |
234 | struct interface *ifp; | |
9cf67225 | 235 | struct kif kif; |
eac6e3f0 RW |
236 | |
237 | /* zebra_interface_state_read() updates interface structure in iflist */ | |
238 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
239 | if (ifp == NULL) | |
240 | return (0); | |
241 | ||
242 | debug_zebra_in("interface delete %s index %d mtu %d", ifp->name, | |
243 | ifp->ifindex, ifp->mtu); | |
244 | ||
245 | /* To support pseudo interface do not free interface structure. */ | |
246 | /* if_delete(ifp); */ | |
9cf67225 RW |
247 | ifp->ifindex = IFINDEX_DELETED; |
248 | ||
249 | ifp2kif(ifp, &kif); | |
250 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); | |
eac6e3f0 RW |
251 | |
252 | return (0); | |
253 | } | |
254 | ||
255 | static int | |
256 | ldp_interface_status_change(int command, struct zclient *zclient, | |
257 | zebra_size_t length, vrf_id_t vrf_id) | |
258 | { | |
259 | struct interface *ifp; | |
260 | struct listnode *node; | |
261 | struct connected *ifc; | |
262 | struct kif kif; | |
263 | struct kaddr ka; | |
eac6e3f0 RW |
264 | |
265 | /* | |
266 | * zebra_interface_state_read() updates interface structure in | |
267 | * iflist. | |
268 | */ | |
269 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
270 | if (ifp == NULL) | |
271 | return (0); | |
272 | ||
273 | debug_zebra_in("interface %s state update", ifp->name); | |
274 | ||
275 | ifp2kif(ifp, &kif); | |
52b530fc | 276 | main_imsg_compose_both(IMSG_IFSTATUS, &kif, sizeof(kif)); |
eac6e3f0 | 277 | |
988ded8d | 278 | if (if_is_operative(ifp)) { |
eac6e3f0 RW |
279 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { |
280 | ifc2kaddr(ifp, ifc, &ka); | |
281 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, | |
282 | sizeof(ka)); | |
283 | } | |
284 | } else { | |
285 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { | |
286 | ifc2kaddr(ifp, ifc, &ka); | |
287 | main_imsg_compose_ldpe(IMSG_DELADDR, 0, &ka, | |
288 | sizeof(ka)); | |
289 | } | |
290 | } | |
291 | ||
292 | return (0); | |
293 | } | |
294 | ||
295 | static int | |
296 | ldp_interface_address_add(int command, struct zclient *zclient, | |
297 | zebra_size_t length, vrf_id_t vrf_id) | |
298 | { | |
299 | struct connected *ifc; | |
300 | struct interface *ifp; | |
301 | struct kaddr ka; | |
302 | ||
303 | ifc = zebra_interface_address_read(command, zclient->ibuf, vrf_id); | |
304 | if (ifc == NULL) | |
305 | return (0); | |
306 | ||
307 | ifp = ifc->ifp; | |
308 | ifc2kaddr(ifp, ifc, &ka); | |
309 | ||
310 | /* Filter invalid addresses. */ | |
311 | if (bad_addr(ka.af, &ka.addr)) | |
312 | return (0); | |
313 | ||
9cf67225 RW |
314 | debug_zebra_in("address add %s/%u interface %s", |
315 | log_addr(ka.af, &ka.addr), ka.prefixlen, ifp->name); | |
eac6e3f0 RW |
316 | |
317 | /* notify ldpe about new address */ | |
318 | main_imsg_compose_ldpe(IMSG_NEWADDR, 0, &ka, sizeof(ka)); | |
319 | ||
320 | return (0); | |
321 | } | |
322 | ||
323 | static int | |
324 | ldp_interface_address_delete(int command, struct zclient *zclient, | |
325 | zebra_size_t length, vrf_id_t vrf_id) | |
326 | { | |
327 | struct connected *ifc; | |
328 | struct interface *ifp; | |
329 | struct kaddr ka; | |
330 | ||
331 | ifc = zebra_interface_address_read(command, zclient->ibuf, vrf_id); | |
332 | if (ifc == NULL) | |
333 | return (0); | |
334 | ||
335 | ifp = ifc->ifp; | |
336 | ifc2kaddr(ifp, ifc, &ka); | |
337 | connected_free(ifc); | |
338 | ||
339 | /* Filter invalid addresses. */ | |
340 | if (bad_addr(ka.af, &ka.addr)) | |
341 | return (0); | |
342 | ||
9cf67225 RW |
343 | debug_zebra_in("address delete %s/%u interface %s", |
344 | log_addr(ka.af, &ka.addr), ka.prefixlen, ifp->name); | |
eac6e3f0 RW |
345 | |
346 | /* notify ldpe about removed address */ | |
347 | main_imsg_compose_ldpe(IMSG_DELADDR, 0, &ka, sizeof(ka)); | |
348 | ||
349 | return (0); | |
350 | } | |
351 | ||
352 | static int | |
353 | ldp_zebra_read_route(int command, struct zclient *zclient, zebra_size_t length, | |
354 | vrf_id_t vrf_id) | |
355 | { | |
356 | struct stream *s; | |
357 | u_char type; | |
358 | u_char message_flags; | |
359 | struct kroute kr; | |
8cb1fc45 | 360 | int nhnum = 0, nhlen; |
eac6e3f0 | 361 | size_t nhmark; |
1f2ff5b5 | 362 | int add = 0; |
eac6e3f0 RW |
363 | |
364 | memset(&kr, 0, sizeof(kr)); | |
365 | s = zclient->ibuf; | |
366 | ||
367 | type = stream_getc(s); | |
a695cc7b RW |
368 | switch (type) { |
369 | case ZEBRA_ROUTE_CONNECT: | |
eac6e3f0 | 370 | kr.flags |= F_CONNECTED; |
a695cc7b RW |
371 | break; |
372 | case ZEBRA_ROUTE_BGP: | |
373 | /* LDP should follow the IGP and ignore BGP routes */ | |
374 | return (0); | |
375 | default: | |
376 | break; | |
377 | } | |
378 | ||
3f67fb9c | 379 | stream_getl(s); /* flags, unused */ |
eac6e3f0 RW |
380 | stream_getw(s); /* instance, unused */ |
381 | message_flags = stream_getc(s); | |
eac6e3f0 RW |
382 | |
383 | switch (command) { | |
eac6e3f0 | 384 | case ZEBRA_REDISTRIBUTE_IPV4_ADD: |
eac6e3f0 RW |
385 | case ZEBRA_REDISTRIBUTE_IPV4_DEL: |
386 | kr.af = AF_INET; | |
387 | nhlen = sizeof(struct in_addr); | |
388 | break; | |
eac6e3f0 | 389 | case ZEBRA_REDISTRIBUTE_IPV6_ADD: |
eac6e3f0 RW |
390 | case ZEBRA_REDISTRIBUTE_IPV6_DEL: |
391 | kr.af = AF_INET6; | |
392 | nhlen = sizeof(struct in6_addr); | |
393 | break; | |
394 | default: | |
395 | fatalx("ldp_zebra_read_route: unknown command"); | |
396 | } | |
397 | kr.prefixlen = stream_getc(s); | |
398 | stream_get(&kr.prefix, s, PSIZE(kr.prefixlen)); | |
399 | ||
400 | if (bad_addr(kr.af, &kr.prefix) || | |
401 | (kr.af == AF_INET6 && IN6_IS_SCOPE_EMBED(&kr.prefix.v6))) | |
402 | return (0); | |
403 | ||
81a164e2 CF |
404 | if (kr.af == AF_INET6 && |
405 | CHECK_FLAG(message_flags, ZAPI_MESSAGE_SRCPFX)) { | |
406 | uint8_t src_prefixlen; | |
407 | ||
408 | src_prefixlen = stream_getc(s); | |
409 | ||
410 | /* we completely ignore srcdest routes for now. */ | |
411 | if (src_prefixlen) | |
412 | return (0); | |
413 | } | |
414 | ||
8cb1fc45 RW |
415 | if (CHECK_FLAG(message_flags, ZAPI_MESSAGE_NEXTHOP)) { |
416 | nhnum = stream_getc(s); | |
417 | nhmark = stream_get_getp(s); | |
418 | stream_set_getp(s, nhmark + nhnum * (nhlen + 5)); | |
419 | } | |
eac6e3f0 RW |
420 | |
421 | if (CHECK_FLAG(message_flags, ZAPI_MESSAGE_DISTANCE)) | |
422 | kr.priority = stream_getc(s); | |
423 | if (CHECK_FLAG(message_flags, ZAPI_MESSAGE_METRIC)) | |
424 | stream_getl(s); /* metric, not used */ | |
425 | ||
8cb1fc45 RW |
426 | if (CHECK_FLAG(message_flags, ZAPI_MESSAGE_NEXTHOP)) |
427 | stream_set_getp(s, nhmark); | |
428 | ||
1f2ff5b5 RW |
429 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD || |
430 | command == ZEBRA_REDISTRIBUTE_IPV6_ADD) | |
431 | add = 1; | |
432 | ||
433 | if (nhnum == 0) | |
434 | debug_zebra_in("route %s %s/%d (%s)", (add) ? "add" : "delete", | |
435 | log_addr(kr.af, &kr.prefix), kr.prefixlen, | |
436 | zebra_route_string(type)); | |
eac6e3f0 RW |
437 | |
438 | /* loop through all the nexthops */ | |
439 | for (; nhnum > 0; nhnum--) { | |
440 | switch (kr.af) { | |
441 | case AF_INET: | |
442 | kr.nexthop.v4.s_addr = stream_get_ipv4(s); | |
443 | break; | |
444 | case AF_INET6: | |
445 | stream_get(&kr.nexthop.v6, s, sizeof(kr.nexthop.v6)); | |
446 | break; | |
447 | default: | |
448 | break; | |
449 | } | |
450 | stream_getc(s); /* ifindex_num, unused. */ | |
451 | kr.ifindex = stream_getl(s); | |
452 | ||
1f2ff5b5 RW |
453 | debug_zebra_in("route %s %s/%d nexthop %s ifindex %u (%s)", |
454 | (add) ? "add" : "delete", log_addr(kr.af, &kr.prefix), | |
455 | kr.prefixlen, log_addr(kr.af, &kr.nexthop), kr.ifindex, | |
456 | zebra_route_string(type)); | |
457 | ||
458 | if (add) | |
eac6e3f0 RW |
459 | main_imsg_compose_lde(IMSG_NETWORK_ADD, 0, &kr, |
460 | sizeof(kr)); | |
eac6e3f0 RW |
461 | } |
462 | ||
8cb1fc45 | 463 | main_imsg_compose_lde(IMSG_NETWORK_UPDATE, 0, &kr, sizeof(kr)); |
134970a2 | 464 | |
eac6e3f0 RW |
465 | return (0); |
466 | } | |
467 | ||
468 | static void | |
469 | ldp_zebra_connected(struct zclient *zclient) | |
470 | { | |
eac6e3f0 | 471 | zclient_send_reg_requests(zclient, VRF_DEFAULT); |
a695cc7b RW |
472 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, |
473 | ZEBRA_ROUTE_ALL, 0, VRF_DEFAULT); | |
474 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP6, | |
475 | ZEBRA_ROUTE_ALL, 0, VRF_DEFAULT); | |
eac6e3f0 RW |
476 | } |
477 | ||
478 | void | |
479 | ldp_zebra_init(struct thread_master *master) | |
480 | { | |
481 | /* Set default values. */ | |
482 | zclient = zclient_new(master); | |
483 | zclient_init(zclient, ZEBRA_ROUTE_LDP, 0); | |
484 | ||
485 | /* set callbacks */ | |
486 | zclient->zebra_connected = ldp_zebra_connected; | |
487 | zclient->router_id_update = ldp_router_id_update; | |
488 | zclient->interface_add = ldp_interface_add; | |
489 | zclient->interface_delete = ldp_interface_delete; | |
490 | zclient->interface_up = ldp_interface_status_change; | |
491 | zclient->interface_down = ldp_interface_status_change; | |
492 | zclient->interface_address_add = ldp_interface_address_add; | |
493 | zclient->interface_address_delete = ldp_interface_address_delete; | |
eac6e3f0 RW |
494 | zclient->redistribute_route_ipv4_add = ldp_zebra_read_route; |
495 | zclient->redistribute_route_ipv4_del = ldp_zebra_read_route; | |
eac6e3f0 RW |
496 | zclient->redistribute_route_ipv6_add = ldp_zebra_read_route; |
497 | zclient->redistribute_route_ipv6_del = ldp_zebra_read_route; | |
498 | } | |
64dffe25 RW |
499 | |
500 | void | |
501 | ldp_zebra_destroy(void) | |
502 | { | |
503 | zclient_stop(zclient); | |
504 | zclient_free(zclient); | |
505 | zclient = NULL; | |
506 | } |