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eb5d44eb | 1 | /* |
ac4d0be5 | 2 | * IS-IS Rout(e)ing protocol - isis_zebra.c |
eb5d44eb | 3 | * |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
ac4d0be5 | 5 | * Tampere University of Technology |
eb5d44eb | 6 | * Institute of Communications Engineering |
f3ccedaa | 7 | * Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org> |
eb5d44eb | 8 | * |
ac4d0be5 | 9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public Licenseas published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
eb5d44eb | 12 | * any later version. |
13 | * | |
ac4d0be5 | 14 | * This program is distributed in the hope that it will be useful,but WITHOUT |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
eb5d44eb | 17 | * more details. |
18 | ||
ac4d0be5 | 19 | * You should have received a copy of the GNU General Public License along |
20 | * with this program; if not, write to the Free Software Foundation, Inc., | |
eb5d44eb | 21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
22 | */ | |
23 | ||
24 | #include <zebra.h> | |
eb5d44eb | 25 | |
26 | #include "thread.h" | |
27 | #include "command.h" | |
28 | #include "memory.h" | |
29 | #include "log.h" | |
30 | #include "if.h" | |
31 | #include "network.h" | |
32 | #include "prefix.h" | |
33 | #include "zclient.h" | |
34 | #include "stream.h" | |
35 | #include "linklist.h" | |
f3ccedaa | 36 | #include "nexthop.h" |
7076bb2f | 37 | #include "vrf.h" |
eb5d44eb | 38 | |
c89c05dd | 39 | #include "isisd/dict.h" |
eb5d44eb | 40 | #include "isisd/isis_constants.h" |
41 | #include "isisd/isis_common.h" | |
3f045a08 JB |
42 | #include "isisd/isis_flags.h" |
43 | #include "isisd/isis_misc.h" | |
44 | #include "isisd/isis_circuit.h" | |
45 | #include "isisd/isis_tlv.h" | |
c89c05dd | 46 | #include "isisd/isisd.h" |
eb5d44eb | 47 | #include "isisd/isis_circuit.h" |
48 | #include "isisd/isis_csm.h" | |
3f045a08 | 49 | #include "isisd/isis_lsp.h" |
eb5d44eb | 50 | #include "isisd/isis_route.h" |
51 | #include "isisd/isis_zebra.h" | |
f8c06e2c | 52 | #include "isisd/isis_te.h" |
eb5d44eb | 53 | |
54 | struct zclient *zclient = NULL; | |
55 | ||
18a6dce6 | 56 | /* Router-id update message from zebra. */ |
ac4d0be5 | 57 | static int isis_router_id_update_zebra(int command, struct zclient *zclient, |
58 | zebra_size_t length, vrf_id_t vrf_id) | |
18a6dce6 | 59 | { |
ac4d0be5 | 60 | struct isis_area *area; |
61 | struct listnode *node; | |
62 | struct prefix router_id; | |
63 | ||
64 | /* | |
65 | * If ISIS TE is enable, TE Router ID is set through specific command. | |
66 | * See mpls_te_router_addr() command in isis_te.c | |
67 | */ | |
68 | if (IS_MPLS_TE(isisMplsTE)) | |
69 | return 0; | |
70 | ||
71 | zebra_router_id_update_read(zclient->ibuf, &router_id); | |
72 | if (isis->router_id == router_id.u.prefix4.s_addr) | |
73 | return 0; | |
74 | ||
75 | isis->router_id = router_id.u.prefix4.s_addr; | |
76 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) | |
77 | if (listcount(area->area_addrs) > 0) | |
78 | lsp_regenerate_schedule(area, area->is_type, 0); | |
79 | ||
80 | return 0; | |
18a6dce6 | 81 | } |
eb5d44eb | 82 | |
ac4d0be5 | 83 | static int isis_zebra_if_add(int command, struct zclient *zclient, |
84 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 85 | { |
ac4d0be5 | 86 | struct interface *ifp; |
eb5d44eb | 87 | |
ac4d0be5 | 88 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); |
f390d2c7 | 89 | |
ac4d0be5 | 90 | if (isis->debugs & DEBUG_ZEBRA) |
91 | zlog_debug( | |
92 | "Zebra I/F add: %s index %d flags %ld metric %d mtu %d", | |
93 | ifp->name, ifp->ifindex, (long)ifp->flags, ifp->metric, | |
94 | ifp->mtu); | |
f390d2c7 | 95 | |
ac4d0be5 | 96 | if (if_is_operative(ifp)) |
97 | isis_csm_state_change(IF_UP_FROM_Z, circuit_scan_by_ifp(ifp), | |
98 | ifp); | |
f390d2c7 | 99 | |
ac4d0be5 | 100 | return 0; |
eb5d44eb | 101 | } |
102 | ||
ac4d0be5 | 103 | static int isis_zebra_if_del(int command, struct zclient *zclient, |
104 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 105 | { |
ac4d0be5 | 106 | struct interface *ifp; |
107 | struct stream *s; | |
eb5d44eb | 108 | |
ac4d0be5 | 109 | s = zclient->ibuf; |
110 | ifp = zebra_interface_state_read(s, vrf_id); | |
f390d2c7 | 111 | |
ac4d0be5 | 112 | if (!ifp) |
113 | return 0; | |
eb5d44eb | 114 | |
ac4d0be5 | 115 | if (if_is_operative(ifp)) |
116 | zlog_warn("Zebra: got delete of %s, but interface is still up", | |
117 | ifp->name); | |
eb5d44eb | 118 | |
ac4d0be5 | 119 | if (isis->debugs & DEBUG_ZEBRA) |
120 | zlog_debug( | |
121 | "Zebra I/F delete: %s index %d flags %ld metric %d mtu %d", | |
122 | ifp->name, ifp->ifindex, (long)ifp->flags, ifp->metric, | |
123 | ifp->mtu); | |
eb5d44eb | 124 | |
ac4d0be5 | 125 | isis_csm_state_change(IF_DOWN_FROM_Z, circuit_scan_by_ifp(ifp), ifp); |
d2fc8896 | 126 | |
ac4d0be5 | 127 | /* Cannot call if_delete because we should retain the pseudo interface |
128 | in case there is configuration info attached to it. */ | |
129 | if_delete_retain(ifp); | |
f390d2c7 | 130 | |
ac4d0be5 | 131 | ifp->ifindex = IFINDEX_DELETED; |
d2fc8896 | 132 | |
ac4d0be5 | 133 | return 0; |
eb5d44eb | 134 | } |
135 | ||
ac4d0be5 | 136 | static int isis_zebra_if_state_up(int command, struct zclient *zclient, |
137 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 138 | { |
ac4d0be5 | 139 | struct interface *ifp; |
f390d2c7 | 140 | |
ac4d0be5 | 141 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); |
f390d2c7 | 142 | |
ac4d0be5 | 143 | if (ifp == NULL) |
144 | return 0; | |
f390d2c7 | 145 | |
ac4d0be5 | 146 | isis_csm_state_change(IF_UP_FROM_Z, circuit_scan_by_ifp(ifp), ifp); |
f390d2c7 | 147 | |
ac4d0be5 | 148 | return 0; |
eb5d44eb | 149 | } |
150 | ||
ac4d0be5 | 151 | static int isis_zebra_if_state_down(int command, struct zclient *zclient, |
152 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 153 | { |
ac4d0be5 | 154 | struct interface *ifp; |
155 | struct isis_circuit *circuit; | |
f390d2c7 | 156 | |
ac4d0be5 | 157 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); |
f390d2c7 | 158 | |
ac4d0be5 | 159 | if (ifp == NULL) |
160 | return 0; | |
f390d2c7 | 161 | |
ac4d0be5 | 162 | circuit = isis_csm_state_change(IF_DOWN_FROM_Z, |
163 | circuit_scan_by_ifp(ifp), ifp); | |
164 | if (circuit) | |
165 | SET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
f390d2c7 | 166 | |
ac4d0be5 | 167 | return 0; |
eb5d44eb | 168 | } |
169 | ||
ac4d0be5 | 170 | static int isis_zebra_if_address_add(int command, struct zclient *zclient, |
171 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 172 | { |
ac4d0be5 | 173 | struct connected *c; |
174 | struct prefix *p; | |
175 | char buf[PREFIX2STR_BUFFER]; | |
eb5d44eb | 176 | |
ac4d0be5 | 177 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
178 | zclient->ibuf, vrf_id); | |
f390d2c7 | 179 | |
ac4d0be5 | 180 | if (c == NULL) |
181 | return 0; | |
f390d2c7 | 182 | |
ac4d0be5 | 183 | p = c->address; |
f390d2c7 | 184 | |
ac4d0be5 | 185 | prefix2str(p, buf, sizeof(buf)); |
eb5d44eb | 186 | #ifdef EXTREME_DEBUG |
ac4d0be5 | 187 | if (p->family == AF_INET) |
188 | zlog_debug("connected IP address %s", buf); | |
189 | if (p->family == AF_INET6) | |
190 | zlog_debug("connected IPv6 address %s", buf); | |
eb5d44eb | 191 | #endif /* EXTREME_DEBUG */ |
ac4d0be5 | 192 | if (if_is_operative(c->ifp)) |
193 | isis_circuit_add_addr(circuit_scan_by_ifp(c->ifp), c); | |
eb5d44eb | 194 | |
ac4d0be5 | 195 | return 0; |
eb5d44eb | 196 | } |
197 | ||
ac4d0be5 | 198 | static int isis_zebra_if_address_del(int command, struct zclient *client, |
199 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 200 | { |
ac4d0be5 | 201 | struct connected *c; |
202 | struct interface *ifp; | |
1cd80845 | 203 | #ifdef EXTREME_DEBUG |
ac4d0be5 | 204 | struct prefix *p; |
205 | char buf[PREFIX2STR_BUFFER]; | |
1cd80845 | 206 | #endif /* EXTREME_DEBUG */ |
eb5d44eb | 207 | |
ac4d0be5 | 208 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, |
209 | zclient->ibuf, vrf_id); | |
f390d2c7 | 210 | |
ac4d0be5 | 211 | if (c == NULL) |
212 | return 0; | |
f390d2c7 | 213 | |
ac4d0be5 | 214 | ifp = c->ifp; |
f390d2c7 | 215 | |
f891f443 | 216 | #ifdef EXTREME_DEBUG |
ac4d0be5 | 217 | p = c->address; |
218 | prefix2str(p, buf, sizeof(buf)); | |
f891f443 | 219 | |
ac4d0be5 | 220 | if (p->family == AF_INET) |
221 | zlog_debug("disconnected IP address %s", buf); | |
222 | if (p->family == AF_INET6) | |
223 | zlog_debug("disconnected IPv6 address %s", buf); | |
f891f443 | 224 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 225 | |
ac4d0be5 | 226 | if (if_is_operative(ifp)) |
227 | isis_circuit_del_addr(circuit_scan_by_ifp(ifp), c); | |
228 | connected_free(c); | |
f390d2c7 | 229 | |
ac4d0be5 | 230 | return 0; |
eb5d44eb | 231 | } |
232 | ||
ac4d0be5 | 233 | static int isis_zebra_link_params(int command, struct zclient *zclient, |
234 | zebra_size_t length) | |
f8c06e2c | 235 | { |
ac4d0be5 | 236 | struct interface *ifp; |
f8c06e2c | 237 | |
ac4d0be5 | 238 | ifp = zebra_interface_link_params_read(zclient->ibuf); |
f8c06e2c | 239 | |
ac4d0be5 | 240 | if (ifp == NULL) |
241 | return 0; | |
f8c06e2c | 242 | |
ac4d0be5 | 243 | /* Update TE TLV */ |
244 | isis_mpls_te_update(ifp); | |
f8c06e2c | 245 | |
ac4d0be5 | 246 | return 0; |
f8c06e2c OD |
247 | } |
248 | ||
ac4d0be5 | 249 | static void isis_zebra_route_add_ipv4(struct prefix *prefix, |
250 | struct isis_route_info *route_info) | |
eb5d44eb | 251 | { |
ac4d0be5 | 252 | u_char message; |
253 | u_int32_t flags; | |
254 | int psize; | |
255 | struct stream *stream; | |
256 | struct isis_nexthop *nexthop; | |
257 | struct listnode *node; | |
258 | ||
259 | if (CHECK_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) | |
260 | return; | |
261 | ||
262 | if (vrf_bitmap_check(zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], | |
263 | VRF_DEFAULT)) { | |
264 | message = 0; | |
265 | flags = 0; | |
266 | ||
267 | SET_FLAG(message, ZAPI_MESSAGE_NEXTHOP); | |
268 | SET_FLAG(message, ZAPI_MESSAGE_METRIC); | |
2097cd8a | 269 | #if 0 |
f390d2c7 | 270 | SET_FLAG (message, ZAPI_MESSAGE_DISTANCE); |
2097cd8a | 271 | #endif |
f390d2c7 | 272 | |
ac4d0be5 | 273 | stream = zclient->obuf; |
274 | stream_reset(stream); | |
275 | zclient_create_header(stream, ZEBRA_IPV4_ROUTE_ADD, | |
276 | VRF_DEFAULT); | |
277 | /* type */ | |
278 | stream_putc(stream, ZEBRA_ROUTE_ISIS); | |
279 | /* instance */ | |
280 | stream_putw(stream, 0); | |
281 | /* flags */ | |
282 | stream_putl(stream, flags); | |
283 | /* message */ | |
284 | stream_putc(stream, message); | |
285 | /* SAFI */ | |
286 | stream_putw(stream, SAFI_UNICAST); | |
287 | /* prefix information */ | |
288 | psize = PSIZE(prefix->prefixlen); | |
289 | stream_putc(stream, prefix->prefixlen); | |
290 | stream_write(stream, (u_char *)&prefix->u.prefix4, psize); | |
291 | ||
292 | stream_putc(stream, listcount(route_info->nexthops)); | |
293 | ||
294 | /* Nexthop, ifindex, distance and metric information */ | |
295 | for (ALL_LIST_ELEMENTS_RO(route_info->nexthops, node, | |
296 | nexthop)) { | |
297 | /* FIXME: can it be ? */ | |
298 | if (nexthop->ip.s_addr != INADDR_ANY) { | |
299 | stream_putc(stream, NEXTHOP_TYPE_IPV4); | |
300 | stream_put_in_addr(stream, &nexthop->ip); | |
301 | } else { | |
302 | stream_putc(stream, NEXTHOP_TYPE_IFINDEX); | |
303 | stream_putl(stream, nexthop->ifindex); | |
304 | } | |
305 | } | |
2097cd8a | 306 | #if 0 |
f390d2c7 | 307 | if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE)) |
308 | stream_putc (stream, route_info->depth); | |
2097cd8a | 309 | #endif |
ac4d0be5 | 310 | if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) |
311 | stream_putl(stream, route_info->cost); | |
312 | ||
313 | stream_putw_at(stream, 0, stream_get_endp(stream)); | |
314 | zclient_send_message(zclient); | |
315 | SET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); | |
316 | UNSET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_RESYNC); | |
317 | } | |
eb5d44eb | 318 | } |
319 | ||
ac4d0be5 | 320 | static void isis_zebra_route_del_ipv4(struct prefix *prefix, |
321 | struct isis_route_info *route_info) | |
eb5d44eb | 322 | { |
ac4d0be5 | 323 | struct zapi_ipv4 api; |
324 | struct prefix_ipv4 prefix4; | |
325 | ||
326 | if (vrf_bitmap_check(zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], | |
327 | VRF_DEFAULT)) { | |
328 | api.vrf_id = VRF_DEFAULT; | |
329 | api.type = ZEBRA_ROUTE_ISIS; | |
330 | api.instance = 0; | |
331 | api.flags = 0; | |
332 | api.message = 0; | |
333 | api.safi = SAFI_UNICAST; | |
334 | prefix4.family = AF_INET; | |
335 | prefix4.prefixlen = prefix->prefixlen; | |
336 | prefix4.prefix = prefix->u.prefix4; | |
337 | zapi_ipv4_route(ZEBRA_IPV4_ROUTE_DELETE, zclient, &prefix4, | |
338 | &api); | |
339 | } | |
340 | UNSET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); | |
341 | ||
342 | return; | |
eb5d44eb | 343 | } |
344 | ||
ac4d0be5 | 345 | static void isis_zebra_route_add_ipv6(struct prefix *prefix, |
346 | struct isis_route_info *route_info) | |
eb5d44eb | 347 | { |
ac4d0be5 | 348 | struct zapi_ipv6 api; |
349 | struct in6_addr **nexthop_list; | |
350 | ifindex_t *ifindex_list; | |
351 | struct isis_nexthop6 *nexthop6; | |
352 | int i, size; | |
353 | struct listnode *node; | |
354 | struct prefix_ipv6 prefix6; | |
355 | ||
356 | if (CHECK_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) | |
357 | return; | |
358 | ||
359 | api.vrf_id = VRF_DEFAULT; | |
360 | api.type = ZEBRA_ROUTE_ISIS; | |
361 | api.instance = 0; | |
362 | api.flags = 0; | |
363 | api.message = 0; | |
364 | api.safi = SAFI_UNICAST; | |
365 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
366 | SET_FLAG(api.message, ZAPI_MESSAGE_IFINDEX); | |
367 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); | |
368 | api.metric = route_info->cost; | |
eb5d44eb | 369 | #if 0 |
370 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
371 | api.distance = route_info->depth; | |
372 | #endif | |
ac4d0be5 | 373 | api.nexthop_num = listcount(route_info->nexthops6); |
374 | api.ifindex_num = listcount(route_info->nexthops6); | |
375 | ||
376 | /* allocate memory for nexthop_list */ | |
377 | size = sizeof(struct isis_nexthop6 *) | |
378 | * listcount(route_info->nexthops6); | |
379 | nexthop_list = (struct in6_addr **)XMALLOC(MTYPE_ISIS_TMP, size); | |
380 | if (!nexthop_list) { | |
381 | zlog_err("isis_zebra_add_route_ipv6: out of memory!"); | |
382 | return; | |
f390d2c7 | 383 | } |
384 | ||
ac4d0be5 | 385 | /* allocate memory for ifindex_list */ |
386 | size = sizeof(unsigned int) * listcount(route_info->nexthops6); | |
387 | ifindex_list = (ifindex_t *)XMALLOC(MTYPE_ISIS_TMP, size); | |
388 | if (!ifindex_list) { | |
389 | zlog_err("isis_zebra_add_route_ipv6: out of memory!"); | |
390 | XFREE(MTYPE_ISIS_TMP, nexthop_list); | |
391 | return; | |
392 | } | |
f390d2c7 | 393 | |
ac4d0be5 | 394 | /* for each nexthop */ |
395 | i = 0; | |
396 | for (ALL_LIST_ELEMENTS_RO(route_info->nexthops6, node, nexthop6)) { | |
397 | if (!IN6_IS_ADDR_LINKLOCAL(&nexthop6->ip6) | |
398 | && !IN6_IS_ADDR_UNSPECIFIED(&nexthop6->ip6)) { | |
399 | api.nexthop_num--; | |
400 | api.ifindex_num--; | |
401 | continue; | |
402 | } | |
403 | ||
404 | nexthop_list[i] = &nexthop6->ip6; | |
405 | ifindex_list[i] = nexthop6->ifindex; | |
406 | i++; | |
407 | } | |
f390d2c7 | 408 | |
ac4d0be5 | 409 | api.nexthop = nexthop_list; |
410 | api.ifindex = ifindex_list; | |
411 | ||
412 | if (api.nexthop_num && api.ifindex_num) { | |
413 | prefix6.family = AF_INET6; | |
414 | prefix6.prefixlen = prefix->prefixlen; | |
415 | memcpy(&prefix6.prefix, &prefix->u.prefix6, | |
416 | sizeof(struct in6_addr)); | |
417 | zapi_ipv6_route(ZEBRA_IPV6_ROUTE_ADD, zclient, &prefix6, NULL, | |
418 | &api); | |
419 | SET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); | |
420 | UNSET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_RESYNC); | |
421 | } | |
f390d2c7 | 422 | |
ac4d0be5 | 423 | XFREE(MTYPE_ISIS_TMP, nexthop_list); |
424 | XFREE(MTYPE_ISIS_TMP, ifindex_list); | |
f390d2c7 | 425 | |
ac4d0be5 | 426 | return; |
eb5d44eb | 427 | } |
428 | ||
ac4d0be5 | 429 | static void isis_zebra_route_del_ipv6(struct prefix *prefix, |
430 | struct isis_route_info *route_info) | |
eb5d44eb | 431 | { |
ac4d0be5 | 432 | struct zapi_ipv6 api; |
433 | struct in6_addr **nexthop_list; | |
434 | ifindex_t *ifindex_list; | |
435 | struct isis_nexthop6 *nexthop6; | |
436 | int i, size; | |
437 | struct listnode *node; | |
438 | struct prefix_ipv6 prefix6; | |
439 | ||
440 | if (!CHECK_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) | |
441 | return; | |
442 | ||
443 | api.vrf_id = VRF_DEFAULT; | |
444 | api.type = ZEBRA_ROUTE_ISIS; | |
445 | api.instance = 0; | |
446 | api.flags = 0; | |
447 | api.message = 0; | |
448 | api.safi = SAFI_UNICAST; | |
449 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
450 | SET_FLAG(api.message, ZAPI_MESSAGE_IFINDEX); | |
451 | api.nexthop_num = listcount(route_info->nexthops6); | |
452 | api.ifindex_num = listcount(route_info->nexthops6); | |
453 | ||
454 | /* allocate memory for nexthop_list */ | |
455 | size = sizeof(struct isis_nexthop6 *) | |
456 | * listcount(route_info->nexthops6); | |
457 | nexthop_list = (struct in6_addr **)XMALLOC(MTYPE_ISIS_TMP, size); | |
458 | if (!nexthop_list) { | |
459 | zlog_err("isis_zebra_route_del_ipv6: out of memory!"); | |
460 | return; | |
461 | } | |
462 | ||
463 | /* allocate memory for ifindex_list */ | |
464 | size = sizeof(unsigned int) * listcount(route_info->nexthops6); | |
465 | ifindex_list = (ifindex_t *)XMALLOC(MTYPE_ISIS_TMP, size); | |
466 | if (!ifindex_list) { | |
467 | zlog_err("isis_zebra_route_del_ipv6: out of memory!"); | |
468 | XFREE(MTYPE_ISIS_TMP, nexthop_list); | |
469 | return; | |
f390d2c7 | 470 | } |
471 | ||
ac4d0be5 | 472 | /* for each nexthop */ |
473 | i = 0; | |
474 | for (ALL_LIST_ELEMENTS_RO(route_info->nexthops6, node, nexthop6)) { | |
475 | if (!IN6_IS_ADDR_LINKLOCAL(&nexthop6->ip6) | |
476 | && !IN6_IS_ADDR_UNSPECIFIED(&nexthop6->ip6)) { | |
477 | api.nexthop_num--; | |
478 | api.ifindex_num--; | |
479 | continue; | |
480 | } | |
481 | ||
482 | nexthop_list[i] = &nexthop6->ip6; | |
483 | ifindex_list[i] = nexthop6->ifindex; | |
484 | i++; | |
485 | } | |
486 | ||
487 | api.nexthop = nexthop_list; | |
488 | api.ifindex = ifindex_list; | |
489 | ||
490 | if (api.nexthop_num && api.ifindex_num) { | |
491 | prefix6.family = AF_INET6; | |
492 | prefix6.prefixlen = prefix->prefixlen; | |
493 | memcpy(&prefix6.prefix, &prefix->u.prefix6, | |
494 | sizeof(struct in6_addr)); | |
495 | zapi_ipv6_route(ZEBRA_IPV6_ROUTE_DELETE, zclient, &prefix6, | |
496 | NULL, &api); | |
497 | UNSET_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); | |
498 | } | |
499 | ||
500 | XFREE(MTYPE_ISIS_TMP, nexthop_list); | |
501 | XFREE(MTYPE_ISIS_TMP, ifindex_list); | |
eb5d44eb | 502 | } |
503 | ||
ac4d0be5 | 504 | void isis_zebra_route_update(struct prefix *prefix, |
505 | struct isis_route_info *route_info) | |
eb5d44eb | 506 | { |
ac4d0be5 | 507 | if (zclient->sock < 0) |
508 | return; | |
509 | ||
510 | if ((prefix->family == AF_INET | |
511 | && !vrf_bitmap_check(zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], | |
512 | VRF_DEFAULT)) | |
513 | || (prefix->family == AF_INET6 | |
514 | && !vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_ISIS], | |
515 | VRF_DEFAULT))) | |
516 | return; | |
517 | ||
518 | if (CHECK_FLAG(route_info->flag, ISIS_ROUTE_FLAG_ACTIVE)) { | |
519 | if (prefix->family == AF_INET) | |
520 | isis_zebra_route_add_ipv4(prefix, route_info); | |
521 | else if (prefix->family == AF_INET6) | |
522 | isis_zebra_route_add_ipv6(prefix, route_info); | |
523 | } else { | |
524 | if (prefix->family == AF_INET) | |
525 | isis_zebra_route_del_ipv4(prefix, route_info); | |
526 | else if (prefix->family == AF_INET6) | |
527 | isis_zebra_route_del_ipv6(prefix, route_info); | |
528 | } | |
529 | return; | |
eb5d44eb | 530 | } |
531 | ||
ac4d0be5 | 532 | static int isis_zebra_read_ipv4(int command, struct zclient *zclient, |
533 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 534 | { |
ac4d0be5 | 535 | struct stream *stream; |
536 | struct zapi_ipv4 api; | |
537 | struct prefix_ipv4 p; | |
538 | struct prefix *p_generic = (struct prefix *)&p; | |
539 | ||
540 | stream = zclient->ibuf; | |
541 | memset(&api, 0, sizeof(api)); | |
542 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
543 | ||
544 | api.type = stream_getc(stream); | |
545 | api.instance = stream_getw(stream); | |
546 | api.flags = stream_getl(stream); | |
547 | api.message = stream_getc(stream); | |
548 | ||
549 | p.family = AF_INET; | |
550 | p.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc(stream)); | |
551 | stream_get(&p.prefix, stream, PSIZE(p.prefixlen)); | |
552 | ||
553 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) { | |
554 | api.nexthop_num = stream_getc(stream); | |
555 | (void)stream_get_ipv4(stream); | |
556 | } | |
557 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_IFINDEX)) { | |
558 | api.ifindex_num = stream_getc(stream); | |
559 | stream_getl(stream); | |
560 | } | |
561 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE)) | |
562 | api.distance = stream_getc(stream); | |
563 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC)) | |
564 | api.metric = stream_getl(stream); | |
565 | ||
566 | /* | |
567 | * Avoid advertising a false default reachability. (A default | |
568 | * route installed by IS-IS gets redistributed from zebra back | |
569 | * into IS-IS causing us to start advertising default reachabity | |
570 | * without this check) | |
571 | */ | |
572 | if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS) | |
573 | command = ZEBRA_IPV4_ROUTE_DELETE; | |
574 | ||
575 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD) | |
576 | isis_redist_add(api.type, p_generic, api.distance, api.metric); | |
577 | else | |
578 | isis_redist_delete(api.type, p_generic); | |
579 | ||
580 | return 0; | |
eb5d44eb | 581 | } |
582 | ||
ac4d0be5 | 583 | static int isis_zebra_read_ipv6(int command, struct zclient *zclient, |
584 | zebra_size_t length, vrf_id_t vrf_id) | |
eb5d44eb | 585 | { |
ac4d0be5 | 586 | struct stream *stream; |
587 | struct zapi_ipv6 api; | |
588 | struct prefix_ipv6 p; | |
589 | struct prefix src_p; | |
590 | struct prefix *p_generic = (struct prefix *)&p; | |
591 | struct in6_addr nexthop; | |
592 | unsigned long ifindex __attribute__((unused)); | |
593 | ||
594 | stream = zclient->ibuf; | |
595 | memset(&api, 0, sizeof(api)); | |
596 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
597 | memset(&nexthop, 0, sizeof(nexthop)); | |
598 | ifindex = 0; | |
599 | ||
600 | api.type = stream_getc(stream); | |
601 | api.instance = stream_getw(stream); | |
602 | api.flags = stream_getl(stream); | |
603 | api.message = stream_getc(stream); | |
604 | ||
605 | p.family = AF_INET6; | |
606 | p.prefixlen = stream_getc(stream); | |
607 | stream_get(&p.prefix, stream, PSIZE(p.prefixlen)); | |
608 | ||
609 | memset(&src_p, 0, sizeof(struct prefix)); | |
610 | src_p.family = AF_INET6; | |
611 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { | |
612 | src_p.prefixlen = stream_getc(stream); | |
613 | stream_get(&src_p.u.prefix6, stream, PSIZE(src_p.prefixlen)); | |
614 | } | |
615 | ||
616 | if (src_p.prefixlen) | |
617 | /* we completely ignore srcdest routes for now. */ | |
618 | return 0; | |
619 | ||
620 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) { | |
621 | api.nexthop_num = stream_getc(stream); /* this is always 1 */ | |
622 | stream_get(&nexthop, stream, sizeof(nexthop)); | |
623 | } | |
624 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_IFINDEX)) { | |
625 | api.ifindex_num = stream_getc(stream); | |
626 | ifindex = stream_getl(stream); | |
627 | } | |
628 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE)) | |
629 | api.distance = stream_getc(stream); | |
630 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC)) | |
631 | api.metric = stream_getl(stream); | |
632 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG)) | |
633 | api.tag = stream_getl(stream); | |
634 | ||
635 | /* | |
636 | * Avoid advertising a false default reachability. (A default | |
637 | * route installed by IS-IS gets redistributed from zebra back | |
638 | * into IS-IS causing us to start advertising default reachabity | |
639 | * without this check) | |
640 | */ | |
641 | if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS) | |
642 | command = ZEBRA_IPV6_ROUTE_DELETE; | |
643 | ||
644 | if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD) | |
645 | isis_redist_add(api.type, p_generic, api.distance, api.metric); | |
646 | else | |
647 | isis_redist_delete(api.type, p_generic); | |
648 | ||
649 | return 0; | |
eb5d44eb | 650 | } |
eb5d44eb | 651 | |
ac4d0be5 | 652 | int isis_distribute_list_update(int routetype) |
eb5d44eb | 653 | { |
ac4d0be5 | 654 | return 0; |
eb5d44eb | 655 | } |
656 | ||
ac4d0be5 | 657 | void isis_zebra_redistribute_set(afi_t afi, int type) |
eb5d44eb | 658 | { |
ac4d0be5 | 659 | if (type == DEFAULT_ROUTE) |
660 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_ADD, | |
661 | zclient, VRF_DEFAULT); | |
662 | else | |
663 | zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type, | |
664 | 0, VRF_DEFAULT); | |
f3ccedaa CF |
665 | } |
666 | ||
ac4d0be5 | 667 | void isis_zebra_redistribute_unset(afi_t afi, int type) |
f3ccedaa | 668 | { |
ac4d0be5 | 669 | if (type == DEFAULT_ROUTE) |
670 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, | |
671 | zclient, VRF_DEFAULT); | |
672 | else | |
673 | zclient_redistribute(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
674 | type, 0, VRF_DEFAULT); | |
eb5d44eb | 675 | } |
676 | ||
ac4d0be5 | 677 | static void isis_zebra_connected(struct zclient *zclient) |
7076bb2f | 678 | { |
ac4d0be5 | 679 | zclient_send_reg_requests(zclient, VRF_DEFAULT); |
7076bb2f FL |
680 | } |
681 | ||
ac4d0be5 | 682 | void isis_zebra_init(struct thread_master *master) |
eb5d44eb | 683 | { |
ac4d0be5 | 684 | zclient = zclient_new(master); |
685 | zclient_init(zclient, ZEBRA_ROUTE_ISIS, 0); | |
686 | zclient->zebra_connected = isis_zebra_connected; | |
687 | zclient->router_id_update = isis_router_id_update_zebra; | |
688 | zclient->interface_add = isis_zebra_if_add; | |
689 | zclient->interface_delete = isis_zebra_if_del; | |
690 | zclient->interface_up = isis_zebra_if_state_up; | |
691 | zclient->interface_down = isis_zebra_if_state_down; | |
692 | zclient->interface_address_add = isis_zebra_if_address_add; | |
693 | zclient->interface_address_delete = isis_zebra_if_address_del; | |
694 | zclient->interface_link_params = isis_zebra_link_params; | |
695 | zclient->redistribute_route_ipv4_add = isis_zebra_read_ipv4; | |
696 | zclient->redistribute_route_ipv4_del = isis_zebra_read_ipv4; | |
697 | zclient->redistribute_route_ipv6_add = isis_zebra_read_ipv6; | |
698 | zclient->redistribute_route_ipv6_del = isis_zebra_read_ipv6; | |
699 | ||
700 | return; | |
eb5d44eb | 701 | } |