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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_zebra.c | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
5 | * Tampere University of Technology | |
6 | * Institute of Communications Engineering | |
f3ccedaa | 7 | * Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org> |
eb5d44eb | 8 | * |
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) | |
12 | * any later version. | |
13 | * | |
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 | |
17 | * more details. | |
18 | ||
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., | |
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. */ |
92365889 | 57 | static int |
18a6dce6 | 58 | isis_router_id_update_zebra (int command, struct zclient *zclient, |
7076bb2f | 59 | zebra_size_t length, vrf_id_t vrf_id) |
18a6dce6 | 60 | { |
3f045a08 JB |
61 | struct isis_area *area; |
62 | struct listnode *node; | |
18a6dce6 | 63 | struct prefix router_id; |
18a6dce6 | 64 | |
f8c06e2c OD |
65 | /* |
66 | * If ISIS TE is enable, TE Router ID is set through specific command. | |
67 | * See mpls_te_router_addr() command in isis_te.c | |
68 | */ | |
69 | if (IS_MPLS_TE(isisMplsTE)) | |
70 | return 0; | |
71 | ||
3f045a08 JB |
72 | zebra_router_id_update_read (zclient->ibuf, &router_id); |
73 | if (isis->router_id == router_id.u.prefix4.s_addr) | |
74 | return 0; | |
75 | ||
76 | isis->router_id = router_id.u.prefix4.s_addr; | |
77 | for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area)) | |
78 | if (listcount (area->area_addrs) > 0) | |
79 | lsp_regenerate_schedule (area, area->is_type, 0); | |
18a6dce6 | 80 | |
18a6dce6 | 81 | return 0; |
82 | } | |
eb5d44eb | 83 | |
92365889 | 84 | static int |
7076bb2f FL |
85 | isis_zebra_if_add (int command, struct zclient *zclient, zebra_size_t length, |
86 | vrf_id_t vrf_id) | |
eb5d44eb | 87 | { |
88 | struct interface *ifp; | |
89 | ||
7076bb2f | 90 | ifp = zebra_interface_add_read (zclient->ibuf, vrf_id); |
f390d2c7 | 91 | |
c89c05dd | 92 | if (isis->debugs & DEBUG_ZEBRA) |
93 | zlog_debug ("Zebra I/F add: %s index %d flags %ld metric %d mtu %d", | |
41b36e90 | 94 | ifp->name, ifp->ifindex, (long)ifp->flags, ifp->metric, ifp->mtu); |
f390d2c7 | 95 | |
b30c5e67 | 96 | if (if_is_operative (ifp)) |
eb5d44eb | 97 | isis_csm_state_change (IF_UP_FROM_Z, circuit_scan_by_ifp (ifp), ifp); |
f390d2c7 | 98 | |
eb5d44eb | 99 | return 0; |
100 | } | |
101 | ||
92365889 | 102 | static int |
7076bb2f FL |
103 | isis_zebra_if_del (int command, struct zclient *zclient, zebra_size_t length, |
104 | vrf_id_t vrf_id) | |
eb5d44eb | 105 | { |
106 | struct interface *ifp; | |
107 | struct stream *s; | |
108 | ||
109 | s = zclient->ibuf; | |
7076bb2f | 110 | ifp = zebra_interface_state_read (s, vrf_id); |
f390d2c7 | 111 | |
eb5d44eb | 112 | if (!ifp) |
113 | return 0; | |
114 | ||
b30c5e67 | 115 | if (if_is_operative (ifp)) |
eb5d44eb | 116 | zlog_warn ("Zebra: got delete of %s, but interface is still up", |
f390d2c7 | 117 | ifp->name); |
eb5d44eb | 118 | |
c89c05dd | 119 | if (isis->debugs & DEBUG_ZEBRA) |
120 | zlog_debug ("Zebra I/F delete: %s index %d flags %ld metric %d mtu %d", | |
41b36e90 | 121 | ifp->name, ifp->ifindex, (long)ifp->flags, ifp->metric, ifp->mtu); |
eb5d44eb | 122 | |
3f045a08 | 123 | isis_csm_state_change (IF_DOWN_FROM_Z, circuit_scan_by_ifp (ifp), ifp); |
d2fc8896 | 124 | |
125 | /* Cannot call if_delete because we should retain the pseudo interface | |
126 | in case there is configuration info attached to it. */ | |
127 | if_delete_retain(ifp); | |
f390d2c7 | 128 | |
84361d61 | 129 | ifp->ifindex = IFINDEX_DELETED; |
d2fc8896 | 130 | |
eb5d44eb | 131 | return 0; |
132 | } | |
133 | ||
92365889 | 134 | static int |
f390d2c7 | 135 | isis_zebra_if_state_up (int command, struct zclient *zclient, |
7076bb2f | 136 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 137 | { |
138 | struct interface *ifp; | |
f390d2c7 | 139 | |
7076bb2f | 140 | ifp = zebra_interface_state_read (zclient->ibuf, vrf_id); |
f390d2c7 | 141 | |
3f045a08 | 142 | if (ifp == NULL) |
eb5d44eb | 143 | return 0; |
f390d2c7 | 144 | |
eb5d44eb | 145 | isis_csm_state_change (IF_UP_FROM_Z, circuit_scan_by_ifp (ifp), ifp); |
f390d2c7 | 146 | |
eb5d44eb | 147 | return 0; |
148 | } | |
149 | ||
92365889 | 150 | static int |
f390d2c7 | 151 | isis_zebra_if_state_down (int command, struct zclient *zclient, |
7076bb2f | 152 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 153 | { |
154 | struct interface *ifp; | |
3f045a08 | 155 | struct isis_circuit *circuit; |
f390d2c7 | 156 | |
7076bb2f | 157 | ifp = zebra_interface_state_read (zclient->ibuf, vrf_id); |
f390d2c7 | 158 | |
eb5d44eb | 159 | if (ifp == NULL) |
160 | return 0; | |
f390d2c7 | 161 | |
3f045a08 JB |
162 | circuit = isis_csm_state_change (IF_DOWN_FROM_Z, circuit_scan_by_ifp (ifp), |
163 | ifp); | |
164 | if (circuit) | |
165 | SET_FLAG(circuit->flags, ISIS_CIRCUIT_FLAPPED_AFTER_SPF); | |
f390d2c7 | 166 | |
eb5d44eb | 167 | return 0; |
168 | } | |
169 | ||
92365889 | 170 | static int |
f390d2c7 | 171 | isis_zebra_if_address_add (int command, struct zclient *zclient, |
7076bb2f | 172 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 173 | { |
174 | struct connected *c; | |
175 | struct prefix *p; | |
4690c7d7 | 176 | char buf[PREFIX2STR_BUFFER]; |
eb5d44eb | 177 | |
f390d2c7 | 178 | c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_ADD, |
7076bb2f | 179 | zclient->ibuf, vrf_id); |
f390d2c7 | 180 | |
eb5d44eb | 181 | if (c == NULL) |
182 | return 0; | |
f390d2c7 | 183 | |
eb5d44eb | 184 | p = c->address; |
f390d2c7 | 185 | |
4690c7d7 | 186 | prefix2str (p, buf, sizeof (buf)); |
eb5d44eb | 187 | #ifdef EXTREME_DEBUG |
f390d2c7 | 188 | if (p->family == AF_INET) |
529d65b3 | 189 | zlog_debug ("connected IP address %s", buf); |
eb5d44eb | 190 | if (p->family == AF_INET6) |
529d65b3 | 191 | zlog_debug ("connected IPv6 address %s", buf); |
eb5d44eb | 192 | #endif /* EXTREME_DEBUG */ |
b30c5e67 | 193 | if (if_is_operative (c->ifp)) |
194 | isis_circuit_add_addr (circuit_scan_by_ifp (c->ifp), c); | |
eb5d44eb | 195 | |
196 | return 0; | |
197 | } | |
198 | ||
92365889 | 199 | static int |
f390d2c7 | 200 | isis_zebra_if_address_del (int command, struct zclient *client, |
7076bb2f | 201 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 202 | { |
203 | struct connected *c; | |
204 | struct interface *ifp; | |
1cd80845 | 205 | #ifdef EXTREME_DEBUG |
f891f443 | 206 | struct prefix *p; |
4690c7d7 | 207 | char buf[PREFIX2STR_BUFFER]; |
1cd80845 | 208 | #endif /* EXTREME_DEBUG */ |
eb5d44eb | 209 | |
f390d2c7 | 210 | c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_DELETE, |
7076bb2f | 211 | zclient->ibuf, vrf_id); |
f390d2c7 | 212 | |
eb5d44eb | 213 | if (c == NULL) |
214 | return 0; | |
f390d2c7 | 215 | |
eb5d44eb | 216 | ifp = c->ifp; |
f390d2c7 | 217 | |
f891f443 | 218 | #ifdef EXTREME_DEBUG |
219 | p = c->address; | |
4690c7d7 | 220 | prefix2str (p, buf, sizeof (buf)); |
f891f443 | 221 | |
222 | if (p->family == AF_INET) | |
529d65b3 | 223 | zlog_debug ("disconnected IP address %s", buf); |
f891f443 | 224 | if (p->family == AF_INET6) |
529d65b3 | 225 | zlog_debug ("disconnected IPv6 address %s", buf); |
f891f443 | 226 | #endif /* EXTREME_DEBUG */ |
f390d2c7 | 227 | |
b30c5e67 | 228 | if (if_is_operative (ifp)) |
229 | isis_circuit_del_addr (circuit_scan_by_ifp (ifp), c); | |
f891f443 | 230 | connected_free (c); |
f390d2c7 | 231 | |
eb5d44eb | 232 | return 0; |
233 | } | |
234 | ||
f8c06e2c OD |
235 | static int |
236 | isis_zebra_link_params (int command, struct zclient *zclient, | |
237 | zebra_size_t length) | |
238 | { | |
239 | struct interface *ifp; | |
240 | ||
241 | ifp = zebra_interface_link_params_read (zclient->ibuf); | |
242 | ||
243 | if (ifp == NULL) | |
244 | return 0; | |
245 | ||
246 | /* Update TE TLV */ | |
247 | isis_mpls_te_update(ifp); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
92365889 | 252 | static void |
f390d2c7 | 253 | isis_zebra_route_add_ipv4 (struct prefix *prefix, |
254 | struct isis_route_info *route_info) | |
eb5d44eb | 255 | { |
0fc452dc CF |
256 | u_char message; |
257 | u_int32_t flags; | |
eb5d44eb | 258 | int psize; |
259 | struct stream *stream; | |
260 | struct isis_nexthop *nexthop; | |
261 | struct listnode *node; | |
262 | ||
3f045a08 | 263 | if (CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) |
eb5d44eb | 264 | return; |
265 | ||
7076bb2f | 266 | if (vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], VRF_DEFAULT)) |
f390d2c7 | 267 | { |
268 | message = 0; | |
269 | flags = 0; | |
270 | ||
271 | SET_FLAG (message, ZAPI_MESSAGE_NEXTHOP); | |
272 | SET_FLAG (message, ZAPI_MESSAGE_METRIC); | |
2097cd8a | 273 | #if 0 |
f390d2c7 | 274 | SET_FLAG (message, ZAPI_MESSAGE_DISTANCE); |
2097cd8a | 275 | #endif |
f390d2c7 | 276 | |
277 | stream = zclient->obuf; | |
278 | stream_reset (stream); | |
7076bb2f | 279 | zclient_create_header (stream, ZEBRA_IPV4_ROUTE_ADD, VRF_DEFAULT); |
f390d2c7 | 280 | /* type */ |
281 | stream_putc (stream, ZEBRA_ROUTE_ISIS); | |
7c8ff89e DS |
282 | /* instance */ |
283 | stream_putw (stream, 0); | |
f390d2c7 | 284 | /* flags */ |
0fc452dc | 285 | stream_putl (stream, flags); |
f390d2c7 | 286 | /* message */ |
287 | stream_putc (stream, message); | |
aa3b2642 AS |
288 | /* SAFI */ |
289 | stream_putw (stream, SAFI_UNICAST); | |
f390d2c7 | 290 | /* prefix information */ |
291 | psize = PSIZE (prefix->prefixlen); | |
292 | stream_putc (stream, prefix->prefixlen); | |
293 | stream_write (stream, (u_char *) & prefix->u.prefix4, psize); | |
294 | ||
295 | stream_putc (stream, listcount (route_info->nexthops)); | |
296 | ||
297 | /* Nexthop, ifindex, distance and metric information */ | |
1eb8ef25 | 298 | for (ALL_LIST_ELEMENTS_RO (route_info->nexthops, node, nexthop)) |
f390d2c7 | 299 | { |
f390d2c7 | 300 | /* FIXME: can it be ? */ |
301 | if (nexthop->ip.s_addr != INADDR_ANY) | |
302 | { | |
5b30316e | 303 | stream_putc (stream, NEXTHOP_TYPE_IPV4); |
f390d2c7 | 304 | stream_put_in_addr (stream, &nexthop->ip); |
305 | } | |
306 | else | |
307 | { | |
5b30316e | 308 | stream_putc (stream, NEXTHOP_TYPE_IFINDEX); |
f390d2c7 | 309 | stream_putl (stream, nexthop->ifindex); |
310 | } | |
311 | } | |
2097cd8a | 312 | #if 0 |
f390d2c7 | 313 | if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE)) |
314 | stream_putc (stream, route_info->depth); | |
2097cd8a | 315 | #endif |
f390d2c7 | 316 | if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC)) |
317 | stream_putl (stream, route_info->cost); | |
318 | ||
319 | stream_putw_at (stream, 0, stream_get_endp (stream)); | |
634f9ea2 | 320 | zclient_send_message(zclient); |
3f045a08 JB |
321 | SET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); |
322 | UNSET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_RESYNC); | |
f390d2c7 | 323 | } |
eb5d44eb | 324 | } |
325 | ||
92365889 | 326 | static void |
f390d2c7 | 327 | isis_zebra_route_del_ipv4 (struct prefix *prefix, |
328 | struct isis_route_info *route_info) | |
eb5d44eb | 329 | { |
330 | struct zapi_ipv4 api; | |
331 | struct prefix_ipv4 prefix4; | |
f390d2c7 | 332 | |
7076bb2f | 333 | if (vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], VRF_DEFAULT)) |
f390d2c7 | 334 | { |
7076bb2f | 335 | api.vrf_id = VRF_DEFAULT; |
f390d2c7 | 336 | api.type = ZEBRA_ROUTE_ISIS; |
7c8ff89e | 337 | api.instance = 0; |
f390d2c7 | 338 | api.flags = 0; |
339 | api.message = 0; | |
aa3b2642 | 340 | api.safi = SAFI_UNICAST; |
f390d2c7 | 341 | prefix4.family = AF_INET; |
342 | prefix4.prefixlen = prefix->prefixlen; | |
343 | prefix4.prefix = prefix->u.prefix4; | |
344 | zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient, &prefix4, &api); | |
345 | } | |
3f045a08 | 346 | UNSET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); |
f390d2c7 | 347 | |
eb5d44eb | 348 | return; |
349 | } | |
350 | ||
91283e76 | 351 | static void |
eb5d44eb | 352 | isis_zebra_route_add_ipv6 (struct prefix *prefix, |
f390d2c7 | 353 | struct isis_route_info *route_info) |
eb5d44eb | 354 | { |
355 | struct zapi_ipv6 api; | |
356 | struct in6_addr **nexthop_list; | |
b892f1dd | 357 | ifindex_t *ifindex_list; |
eb5d44eb | 358 | struct isis_nexthop6 *nexthop6; |
359 | int i, size; | |
360 | struct listnode *node; | |
361 | struct prefix_ipv6 prefix6; | |
362 | ||
3f045a08 | 363 | if (CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) |
eb5d44eb | 364 | return; |
f390d2c7 | 365 | |
7076bb2f | 366 | api.vrf_id = VRF_DEFAULT; |
eb5d44eb | 367 | api.type = ZEBRA_ROUTE_ISIS; |
7c8ff89e | 368 | api.instance = 0; |
eb5d44eb | 369 | api.flags = 0; |
370 | api.message = 0; | |
aa3b2642 | 371 | api.safi = SAFI_UNICAST; |
eb5d44eb | 372 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
373 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); | |
374 | SET_FLAG (api.message, ZAPI_MESSAGE_METRIC); | |
375 | api.metric = route_info->cost; | |
376 | #if 0 | |
377 | SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE); | |
378 | api.distance = route_info->depth; | |
379 | #endif | |
380 | api.nexthop_num = listcount (route_info->nexthops6); | |
381 | api.ifindex_num = listcount (route_info->nexthops6); | |
f390d2c7 | 382 | |
eb5d44eb | 383 | /* allocate memory for nexthop_list */ |
384 | size = sizeof (struct isis_nexthop6 *) * listcount (route_info->nexthops6); | |
385 | nexthop_list = (struct in6_addr **) XMALLOC (MTYPE_ISIS_TMP, size); | |
f390d2c7 | 386 | if (!nexthop_list) |
387 | { | |
388 | zlog_err ("isis_zebra_add_route_ipv6: out of memory!"); | |
389 | return; | |
390 | } | |
391 | ||
eb5d44eb | 392 | /* allocate memory for ifindex_list */ |
393 | size = sizeof (unsigned int) * listcount (route_info->nexthops6); | |
b892f1dd | 394 | ifindex_list = (ifindex_t *) XMALLOC (MTYPE_ISIS_TMP, size); |
f390d2c7 | 395 | if (!ifindex_list) |
396 | { | |
397 | zlog_err ("isis_zebra_add_route_ipv6: out of memory!"); | |
398 | XFREE (MTYPE_ISIS_TMP, nexthop_list); | |
399 | return; | |
400 | } | |
401 | ||
eb5d44eb | 402 | /* for each nexthop */ |
403 | i = 0; | |
1eb8ef25 | 404 | for (ALL_LIST_ELEMENTS_RO (route_info->nexthops6, node, nexthop6)) |
f390d2c7 | 405 | { |
f390d2c7 | 406 | if (!IN6_IS_ADDR_LINKLOCAL (&nexthop6->ip6) && |
407 | !IN6_IS_ADDR_UNSPECIFIED (&nexthop6->ip6)) | |
408 | { | |
409 | api.nexthop_num--; | |
410 | api.ifindex_num--; | |
411 | continue; | |
412 | } | |
413 | ||
414 | nexthop_list[i] = &nexthop6->ip6; | |
415 | ifindex_list[i] = nexthop6->ifindex; | |
416 | i++; | |
eb5d44eb | 417 | } |
f390d2c7 | 418 | |
eb5d44eb | 419 | api.nexthop = nexthop_list; |
420 | api.ifindex = ifindex_list; | |
f390d2c7 | 421 | |
422 | if (api.nexthop_num && api.ifindex_num) | |
423 | { | |
424 | prefix6.family = AF_INET6; | |
425 | prefix6.prefixlen = prefix->prefixlen; | |
426 | memcpy (&prefix6.prefix, &prefix->u.prefix6, sizeof (struct in6_addr)); | |
427 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, &prefix6, &api); | |
3f045a08 JB |
428 | SET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); |
429 | UNSET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_RESYNC); | |
f390d2c7 | 430 | } |
431 | ||
eb5d44eb | 432 | XFREE (MTYPE_ISIS_TMP, nexthop_list); |
433 | XFREE (MTYPE_ISIS_TMP, ifindex_list); | |
f390d2c7 | 434 | |
eb5d44eb | 435 | return; |
436 | } | |
437 | ||
92365889 | 438 | static void |
f390d2c7 | 439 | isis_zebra_route_del_ipv6 (struct prefix *prefix, |
440 | struct isis_route_info *route_info) | |
eb5d44eb | 441 | { |
442 | struct zapi_ipv6 api; | |
443 | struct in6_addr **nexthop_list; | |
b892f1dd | 444 | ifindex_t *ifindex_list; |
eb5d44eb | 445 | struct isis_nexthop6 *nexthop6; |
446 | int i, size; | |
447 | struct listnode *node; | |
448 | struct prefix_ipv6 prefix6; | |
449 | ||
c354c014 | 450 | if (!CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED)) |
eb5d44eb | 451 | return; |
f390d2c7 | 452 | |
7076bb2f | 453 | api.vrf_id = VRF_DEFAULT; |
eb5d44eb | 454 | api.type = ZEBRA_ROUTE_ISIS; |
7c8ff89e | 455 | api.instance = 0; |
eb5d44eb | 456 | api.flags = 0; |
457 | api.message = 0; | |
aa3b2642 | 458 | api.safi = SAFI_UNICAST; |
eb5d44eb | 459 | SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP); |
460 | SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX); | |
461 | api.nexthop_num = listcount (route_info->nexthops6); | |
462 | api.ifindex_num = listcount (route_info->nexthops6); | |
f390d2c7 | 463 | |
eb5d44eb | 464 | /* allocate memory for nexthop_list */ |
465 | size = sizeof (struct isis_nexthop6 *) * listcount (route_info->nexthops6); | |
466 | nexthop_list = (struct in6_addr **) XMALLOC (MTYPE_ISIS_TMP, size); | |
f390d2c7 | 467 | if (!nexthop_list) |
468 | { | |
469 | zlog_err ("isis_zebra_route_del_ipv6: out of memory!"); | |
470 | return; | |
471 | } | |
472 | ||
eb5d44eb | 473 | /* allocate memory for ifindex_list */ |
474 | size = sizeof (unsigned int) * listcount (route_info->nexthops6); | |
b892f1dd | 475 | ifindex_list = (ifindex_t *) XMALLOC (MTYPE_ISIS_TMP, size); |
f390d2c7 | 476 | if (!ifindex_list) |
477 | { | |
478 | zlog_err ("isis_zebra_route_del_ipv6: out of memory!"); | |
479 | XFREE (MTYPE_ISIS_TMP, nexthop_list); | |
480 | return; | |
481 | } | |
482 | ||
eb5d44eb | 483 | /* for each nexthop */ |
484 | i = 0; | |
1eb8ef25 | 485 | for (ALL_LIST_ELEMENTS_RO (route_info->nexthops6, node, nexthop6)) |
f390d2c7 | 486 | { |
f390d2c7 | 487 | if (!IN6_IS_ADDR_LINKLOCAL (&nexthop6->ip6) && |
488 | !IN6_IS_ADDR_UNSPECIFIED (&nexthop6->ip6)) | |
489 | { | |
490 | api.nexthop_num--; | |
491 | api.ifindex_num--; | |
492 | continue; | |
493 | } | |
494 | ||
495 | nexthop_list[i] = &nexthop6->ip6; | |
496 | ifindex_list[i] = nexthop6->ifindex; | |
497 | i++; | |
eb5d44eb | 498 | } |
f390d2c7 | 499 | |
eb5d44eb | 500 | api.nexthop = nexthop_list; |
501 | api.ifindex = ifindex_list; | |
f390d2c7 | 502 | |
503 | if (api.nexthop_num && api.ifindex_num) | |
504 | { | |
505 | prefix6.family = AF_INET6; | |
506 | prefix6.prefixlen = prefix->prefixlen; | |
507 | memcpy (&prefix6.prefix, &prefix->u.prefix6, sizeof (struct in6_addr)); | |
508 | zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, &prefix6, &api); | |
3f045a08 | 509 | UNSET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED); |
f390d2c7 | 510 | } |
511 | ||
eb5d44eb | 512 | XFREE (MTYPE_ISIS_TMP, nexthop_list); |
f390d2c7 | 513 | XFREE (MTYPE_ISIS_TMP, ifindex_list); |
eb5d44eb | 514 | } |
515 | ||
eb5d44eb | 516 | void |
517 | isis_zebra_route_update (struct prefix *prefix, | |
f390d2c7 | 518 | struct isis_route_info *route_info) |
eb5d44eb | 519 | { |
520 | if (zclient->sock < 0) | |
521 | return; | |
522 | ||
7076bb2f FL |
523 | if ((prefix->family == AF_INET && !vrf_bitmap_check (zclient->redist[AFI_IP][ZEBRA_ROUTE_ISIS], VRF_DEFAULT)) || |
524 | (prefix->family == AF_INET6 && !vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_ISIS], VRF_DEFAULT))) | |
eb5d44eb | 525 | return; |
526 | ||
f390d2c7 | 527 | if (CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ACTIVE)) |
528 | { | |
529 | if (prefix->family == AF_INET) | |
530 | isis_zebra_route_add_ipv4 (prefix, route_info); | |
f390d2c7 | 531 | else if (prefix->family == AF_INET6) |
532 | isis_zebra_route_add_ipv6 (prefix, route_info); | |
f390d2c7 | 533 | } |
534 | else | |
535 | { | |
536 | if (prefix->family == AF_INET) | |
537 | isis_zebra_route_del_ipv4 (prefix, route_info); | |
f390d2c7 | 538 | else if (prefix->family == AF_INET6) |
539 | isis_zebra_route_del_ipv6 (prefix, route_info); | |
f390d2c7 | 540 | } |
eb5d44eb | 541 | return; |
542 | } | |
543 | ||
92365889 | 544 | static int |
f390d2c7 | 545 | isis_zebra_read_ipv4 (int command, struct zclient *zclient, |
7076bb2f | 546 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 547 | { |
548 | struct stream *stream; | |
549 | struct zapi_ipv4 api; | |
550 | struct prefix_ipv4 p; | |
f3ccedaa | 551 | struct prefix *p_generic = (struct prefix*)&p; |
eb5d44eb | 552 | |
553 | stream = zclient->ibuf; | |
f3ccedaa | 554 | memset(&api, 0, sizeof(api)); |
eb5d44eb | 555 | memset (&p, 0, sizeof (struct prefix_ipv4)); |
eb5d44eb | 556 | |
f390d2c7 | 557 | api.type = stream_getc (stream); |
7c8ff89e | 558 | api.instance = stream_getw (stream); |
0fc452dc | 559 | api.flags = stream_getl (stream); |
eb5d44eb | 560 | api.message = stream_getc (stream); |
561 | ||
562 | p.family = AF_INET; | |
d9178828 | 563 | p.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc (stream)); |
eb5d44eb | 564 | stream_get (&p.prefix, stream, PSIZE (p.prefixlen)); |
f390d2c7 | 565 | |
566 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
567 | { | |
eb5d44eb | 568 | api.nexthop_num = stream_getc (stream); |
91283e76 | 569 | (void)stream_get_ipv4 (stream); |
f390d2c7 | 570 | } |
571 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) | |
572 | { | |
573 | api.ifindex_num = stream_getc (stream); | |
91283e76 | 574 | stream_getl (stream); |
f390d2c7 | 575 | } |
eb5d44eb | 576 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) |
577 | api.distance = stream_getc (stream); | |
578 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) | |
579 | api.metric = stream_getl (stream); | |
f3ccedaa CF |
580 | |
581 | /* | |
582 | * Avoid advertising a false default reachability. (A default | |
583 | * route installed by IS-IS gets redistributed from zebra back | |
584 | * into IS-IS causing us to start advertising default reachabity | |
585 | * without this check) | |
586 | */ | |
587 | if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS) | |
588 | command = ZEBRA_IPV4_ROUTE_DELETE; | |
f390d2c7 | 589 | |
5048fe14 | 590 | if (command == ZEBRA_REDISTRIBUTE_IPV4_ADD) |
f3ccedaa CF |
591 | isis_redist_add(api.type, p_generic, api.distance, api.metric); |
592 | else | |
593 | isis_redist_delete(api.type, p_generic); | |
eb5d44eb | 594 | |
595 | return 0; | |
596 | } | |
597 | ||
92365889 | 598 | static int |
f390d2c7 | 599 | isis_zebra_read_ipv6 (int command, struct zclient *zclient, |
7076bb2f | 600 | zebra_size_t length, vrf_id_t vrf_id) |
eb5d44eb | 601 | { |
f3ccedaa CF |
602 | struct stream *stream; |
603 | struct zapi_ipv6 api; | |
604 | struct prefix_ipv6 p; | |
605 | struct prefix *p_generic = (struct prefix*)&p; | |
606 | struct in6_addr nexthop; | |
607 | unsigned long ifindex __attribute__((unused)); | |
608 | ||
609 | stream = zclient->ibuf; | |
610 | memset(&api, 0, sizeof(api)); | |
611 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
612 | memset(&nexthop, 0, sizeof(nexthop)); | |
613 | ifindex = 0; | |
614 | ||
615 | api.type = stream_getc(stream); | |
0fc452dc | 616 | api.flags = stream_getl(stream); |
f3ccedaa CF |
617 | api.message = stream_getc(stream); |
618 | ||
619 | p.family = AF_INET6; | |
620 | p.prefixlen = stream_getc(stream); | |
621 | stream_get(&p.prefix, stream, PSIZE(p.prefixlen)); | |
622 | ||
623 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) | |
624 | { | |
625 | api.nexthop_num = stream_getc(stream); /* this is always 1 */ | |
626 | stream_get(&nexthop, stream, sizeof(nexthop)); | |
627 | } | |
628 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_IFINDEX)) | |
629 | { | |
630 | api.ifindex_num = stream_getc(stream); | |
631 | ifindex = stream_getl(stream); | |
632 | } | |
633 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE)) | |
634 | api.distance = stream_getc(stream); | |
635 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC)) | |
636 | api.metric = stream_getl(stream); | |
637 | ||
638 | /* | |
639 | * Avoid advertising a false default reachability. (A default | |
640 | * route installed by IS-IS gets redistributed from zebra back | |
641 | * into IS-IS causing us to start advertising default reachabity | |
642 | * without this check) | |
643 | */ | |
644 | if (p.prefixlen == 0 && api.type == ZEBRA_ROUTE_ISIS) | |
645 | command = ZEBRA_IPV6_ROUTE_DELETE; | |
646 | ||
647 | if (command == ZEBRA_IPV6_ROUTE_ADD) | |
648 | isis_redist_add(api.type, p_generic, api.distance, api.metric); | |
649 | else | |
650 | isis_redist_delete(api.type, p_generic); | |
651 | ||
eb5d44eb | 652 | return 0; |
653 | } | |
eb5d44eb | 654 | |
655 | int | |
656 | isis_distribute_list_update (int routetype) | |
657 | { | |
658 | return 0; | |
659 | } | |
660 | ||
f3ccedaa CF |
661 | void |
662 | isis_zebra_redistribute_set(int type) | |
eb5d44eb | 663 | { |
f3ccedaa CF |
664 | if (type == DEFAULT_ROUTE) |
665 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_ADD, zclient, VRF_DEFAULT); | |
666 | else | |
667 | zclient_redistribute(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, type, 0, VRF_DEFAULT); | |
668 | } | |
669 | ||
670 | void | |
671 | isis_zebra_redistribute_unset(int type) | |
672 | { | |
673 | if (type == DEFAULT_ROUTE) | |
674 | zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, zclient, VRF_DEFAULT); | |
675 | else | |
676 | zclient_redistribute(ZEBRA_REDISTRIBUTE_DELETE, zclient, AFI_IP, type, 0, VRF_DEFAULT); | |
eb5d44eb | 677 | } |
678 | ||
7076bb2f FL |
679 | static void |
680 | isis_zebra_connected (struct zclient *zclient) | |
681 | { | |
0e5223e7 | 682 | zclient_send_reg_requests (zclient, VRF_DEFAULT); |
7076bb2f FL |
683 | } |
684 | ||
eb5d44eb | 685 | void |
4140ca4d | 686 | isis_zebra_init (struct thread_master *master) |
eb5d44eb | 687 | { |
7076bb2f | 688 | zclient = zclient_new (master); |
7c8ff89e | 689 | zclient_init (zclient, ZEBRA_ROUTE_ISIS, 0); |
7076bb2f | 690 | zclient->zebra_connected = isis_zebra_connected; |
18a6dce6 | 691 | zclient->router_id_update = isis_router_id_update_zebra; |
eb5d44eb | 692 | zclient->interface_add = isis_zebra_if_add; |
693 | zclient->interface_delete = isis_zebra_if_del; | |
694 | zclient->interface_up = isis_zebra_if_state_up; | |
695 | zclient->interface_down = isis_zebra_if_state_down; | |
696 | zclient->interface_address_add = isis_zebra_if_address_add; | |
697 | zclient->interface_address_delete = isis_zebra_if_address_del; | |
f8c06e2c | 698 | zclient->interface_link_params = isis_zebra_link_params; |
5048fe14 | 699 | zclient->redistribute_route_ipv4_add = isis_zebra_read_ipv4; |
700 | zclient->redistribute_route_ipv4_del = isis_zebra_read_ipv4; | |
5048fe14 | 701 | zclient->redistribute_route_ipv6_add = isis_zebra_read_ipv6; |
702 | zclient->redistribute_route_ipv6_del = isis_zebra_read_ipv6; | |
eb5d44eb | 703 | |
704 | return; | |
705 | } |