2 * Copyright (C) 2003 Yasuhiro Ohara
4 * This file is part of GNU Zebra.
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
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.
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
31 #include "lib_errors.h"
33 #include "ospf6_proto.h"
34 #include "ospf6_top.h"
35 #include "ospf6_interface.h"
36 #include "ospf6_route.h"
37 #include "ospf6_lsa.h"
38 #include "ospf6_lsdb.h"
39 #include "ospf6_asbr.h"
40 #include "ospf6_zebra.h"
43 DEFINE_MTYPE_STATIC(OSPF6D
, OSPF6_DISTANCE
, "OSPF6 distance")
45 unsigned char conf_debug_ospf6_zebra
= 0;
47 /* information about zebra. */
48 struct zclient
*zclient
= NULL
;
50 /* Router-id update message from zebra. */
51 static int ospf6_router_id_update_zebra(ZAPI_CALLBACK_ARGS
)
53 struct prefix router_id
;
54 struct ospf6
*o
= ospf6
;
56 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
58 om6
->zebra_router_id
= router_id
.u
.prefix4
.s_addr
;
63 o
->router_id_zebra
= router_id
.u
.prefix4
;
64 if (IS_OSPF6_DEBUG_ZEBRA(RECV
)) {
65 char buf
[INET_ADDRSTRLEN
];
67 zlog_debug("%s: zebra router-id %s update",
69 inet_ntop(AF_INET
, &router_id
.u
.prefix4
,
70 buf
, INET_ADDRSTRLEN
));
73 ospf6_router_id_update();
78 /* redistribute function */
79 void ospf6_zebra_redistribute(int type
)
81 if (vrf_bitmap_check(zclient
->redist
[AFI_IP6
][type
], VRF_DEFAULT
))
83 vrf_bitmap_set(zclient
->redist
[AFI_IP6
][type
], VRF_DEFAULT
);
85 if (zclient
->sock
> 0)
86 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
,
87 AFI_IP6
, type
, 0, VRF_DEFAULT
);
90 void ospf6_zebra_no_redistribute(int type
)
92 if (!vrf_bitmap_check(zclient
->redist
[AFI_IP6
][type
], VRF_DEFAULT
))
94 vrf_bitmap_unset(zclient
->redist
[AFI_IP6
][type
], VRF_DEFAULT
);
95 if (zclient
->sock
> 0)
96 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE
, zclient
,
97 AFI_IP6
, type
, 0, VRF_DEFAULT
);
100 static int ospf6_zebra_if_address_update_add(ZAPI_CALLBACK_ARGS
)
105 c
= zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD
,
106 zclient
->ibuf
, vrf_id
);
110 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
111 zlog_debug("Zebra Interface address add: %s %5s %s/%d",
112 c
->ifp
->name
, prefix_family_str(c
->address
),
113 inet_ntop(c
->address
->family
, &c
->address
->u
.prefix
,
115 c
->address
->prefixlen
);
117 if (c
->address
->family
== AF_INET6
) {
118 ospf6_interface_state_update(c
->ifp
);
119 ospf6_interface_connected_route_update(c
->ifp
);
124 static int ospf6_zebra_if_address_update_delete(ZAPI_CALLBACK_ARGS
)
129 c
= zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE
,
130 zclient
->ibuf
, vrf_id
);
134 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
135 zlog_debug("Zebra Interface address delete: %s %5s %s/%d",
136 c
->ifp
->name
, prefix_family_str(c
->address
),
137 inet_ntop(c
->address
->family
, &c
->address
->u
.prefix
,
139 c
->address
->prefixlen
);
141 if (c
->address
->family
== AF_INET6
) {
142 ospf6_interface_connected_route_update(c
->ifp
);
143 ospf6_interface_state_update(c
->ifp
);
151 static int ospf6_zebra_read_route(ZAPI_CALLBACK_ARGS
)
153 struct zapi_route api
;
154 unsigned long ifindex
;
155 struct in6_addr
*nexthop
;
160 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
163 /* we completely ignore srcdest routes for now. */
164 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
167 if (IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
170 ifindex
= api
.nexthops
[0].ifindex
;
171 nexthop
= &api
.nexthops
[0].gate
.ipv6
;
173 if (IS_OSPF6_DEBUG_ZEBRA(RECV
)) {
174 char prefixstr
[PREFIX2STR_BUFFER
], nexthopstr
[128];
175 prefix2str((struct prefix
*)&api
.prefix
, prefixstr
,
177 inet_ntop(AF_INET6
, nexthop
, nexthopstr
, sizeof(nexthopstr
));
180 "Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %" ROUTE_TAG_PRI
,
181 (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
? "add"
183 zebra_route_string(api
.type
), prefixstr
, nexthopstr
,
187 if (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
)
188 ospf6_asbr_redistribute_add(api
.type
, ifindex
, &api
.prefix
,
189 api
.nexthop_num
, nexthop
, api
.tag
);
191 ospf6_asbr_redistribute_remove(api
.type
, ifindex
, &api
.prefix
);
197 show_ospf6_zebra_cmd
,
198 "show ipv6 ospf6 zebra",
205 if (zclient
== NULL
) {
206 vty_out(vty
, "Not connected to zebra\n");
210 vty_out(vty
, "Zebra Information\n");
211 vty_out(vty
, " fail: %d\n", zclient
->fail
);
212 vty_out(vty
, " redistribute default: %d\n",
213 vrf_bitmap_check(zclient
->default_information
[AFI_IP6
],
215 vty_out(vty
, " redistribute:");
216 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
217 if (vrf_bitmap_check(zclient
->redist
[AFI_IP6
][i
], VRF_DEFAULT
))
218 vty_out(vty
, " %s", zebra_route_string(i
));
226 static void ospf6_zebra_route_update(int type
, struct ospf6_route
*request
)
228 struct zapi_route api
;
229 char buf
[PREFIX2STR_BUFFER
];
234 if (IS_OSPF6_DEBUG_ZEBRA(SEND
)) {
235 prefix2str(&request
->prefix
, buf
, sizeof(buf
));
236 zlog_debug("Send %s route: %s",
237 (type
== REM
? "remove" : "add"), buf
);
240 if (zclient
->sock
< 0) {
241 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
242 zlog_debug(" Not connected to Zebra");
246 if (request
->path
.origin
.adv_router
== ospf6
->router_id
247 && (request
->path
.type
== OSPF6_PATH_TYPE_EXTERNAL1
248 || request
->path
.type
== OSPF6_PATH_TYPE_EXTERNAL2
)) {
249 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
250 zlog_debug(" Ignore self-originated external route");
254 /* If removing is the best path and if there's another path,
255 treat this request as add the secondary path */
256 if (type
== REM
&& ospf6_route_is_best(request
) && request
->next
257 && ospf6_route_is_same(request
, request
->next
)) {
258 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
260 " Best-path removal resulted Sencondary addition");
262 request
= request
->next
;
265 /* Only the best path will be sent to zebra. */
266 if (!ospf6_route_is_best(request
)) {
267 /* this is not preferred best route, ignore */
268 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
269 zlog_debug(" Ignore non-best route");
273 nhcount
= ospf6_route_num_nexthops(request
);
275 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
276 zlog_debug(" No nexthop, ignore");
280 dest
= &request
->prefix
;
282 memset(&api
, 0, sizeof(api
));
283 api
.vrf_id
= VRF_DEFAULT
;
284 api
.type
= ZEBRA_ROUTE_OSPF6
;
285 api
.safi
= SAFI_UNICAST
;
287 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
288 api
.nexthop_num
= MIN(nhcount
, MULTIPATH_NUM
);
289 ospf6_route_zebra_copy_nexthops(request
, api
.nexthops
, api
.nexthop_num
);
290 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
291 api
.metric
= (request
->path
.metric_type
== 2 ? request
->path
.u
.cost_e2
292 : request
->path
.cost
);
293 if (request
->path
.tag
) {
294 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
295 api
.tag
= request
->path
.tag
;
298 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
300 ospf6_distance_apply((struct prefix_ipv6
*)dest
, request
);
303 ret
= zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
305 ret
= zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, &api
);
308 flog_err(EC_LIB_ZAPI_SOCKET
,
309 "zclient_route_send() %s failed: %s",
310 (type
== REM
? "delete" : "add"),
311 safe_strerror(errno
));
316 void ospf6_zebra_route_update_add(struct ospf6_route
*request
)
318 ospf6_zebra_route_update(ADD
, request
);
321 void ospf6_zebra_route_update_remove(struct ospf6_route
*request
)
323 ospf6_zebra_route_update(REM
, request
);
326 void ospf6_zebra_add_discard(struct ospf6_route
*request
)
328 struct zapi_route api
;
329 char buf
[INET6_ADDRSTRLEN
];
330 struct prefix
*dest
= &request
->prefix
;
332 if (!CHECK_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
)) {
333 memset(&api
, 0, sizeof(api
));
334 api
.vrf_id
= VRF_DEFAULT
;
335 api
.type
= ZEBRA_ROUTE_OSPF6
;
336 api
.safi
= SAFI_UNICAST
;
338 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
340 zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, &api
);
342 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
343 zlog_debug("Zebra: Route add discard %s/%d",
344 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
348 SET_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
);
350 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
352 "Zebra: Blackhole route present already %s/%d",
353 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
359 void ospf6_zebra_delete_discard(struct ospf6_route
*request
)
361 struct zapi_route api
;
362 char buf
[INET6_ADDRSTRLEN
];
363 struct prefix
*dest
= &request
->prefix
;
365 if (CHECK_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
)) {
366 memset(&api
, 0, sizeof(api
));
367 api
.vrf_id
= VRF_DEFAULT
;
368 api
.type
= ZEBRA_ROUTE_OSPF6
;
369 api
.safi
= SAFI_UNICAST
;
371 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
373 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
375 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
376 zlog_debug("Zebra: Route delete discard %s/%d",
377 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
381 UNSET_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
);
383 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
385 "Zebra: Blackhole route already deleted %s/%d",
386 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
392 static struct ospf6_distance
*ospf6_distance_new(void)
394 return XCALLOC(MTYPE_OSPF6_DISTANCE
, sizeof(struct ospf6_distance
));
397 static void ospf6_distance_free(struct ospf6_distance
*odistance
)
399 XFREE(MTYPE_OSPF6_DISTANCE
, odistance
);
402 int ospf6_distance_set(struct vty
*vty
, struct ospf6
*o
,
403 const char *distance_str
, const char *ip_str
,
404 const char *access_list_str
)
407 struct prefix_ipv6 p
;
409 struct route_node
*rn
;
410 struct ospf6_distance
*odistance
;
412 ret
= str2prefix_ipv6(ip_str
, &p
);
414 vty_out(vty
, "Malformed prefix\n");
415 return CMD_WARNING_CONFIG_FAILED
;
418 distance
= atoi(distance_str
);
420 /* Get OSPF6 distance node. */
421 rn
= route_node_get(o
->distance_table
, (struct prefix
*)&p
);
423 odistance
= rn
->info
;
424 route_unlock_node(rn
);
426 odistance
= ospf6_distance_new();
427 rn
->info
= odistance
;
430 /* Set distance value. */
431 odistance
->distance
= distance
;
433 /* Reset access-list configuration. */
434 if (odistance
->access_list
) {
435 free(odistance
->access_list
);
436 odistance
->access_list
= NULL
;
439 odistance
->access_list
= strdup(access_list_str
);
444 int ospf6_distance_unset(struct vty
*vty
, struct ospf6
*o
,
445 const char *distance_str
, const char *ip_str
,
446 const char *access_list_str
)
449 struct prefix_ipv6 p
;
450 struct route_node
*rn
;
451 struct ospf6_distance
*odistance
;
453 ret
= str2prefix_ipv6(ip_str
, &p
);
455 vty_out(vty
, "Malformed prefix\n");
456 return CMD_WARNING_CONFIG_FAILED
;
459 rn
= route_node_lookup(o
->distance_table
, (struct prefix
*)&p
);
461 vty_out(vty
, "Cant't find specified prefix\n");
462 return CMD_WARNING_CONFIG_FAILED
;
465 odistance
= rn
->info
;
467 if (odistance
->access_list
)
468 free(odistance
->access_list
);
469 ospf6_distance_free(odistance
);
472 route_unlock_node(rn
);
473 route_unlock_node(rn
);
478 void ospf6_distance_reset(struct ospf6
*o
)
480 struct route_node
*rn
;
481 struct ospf6_distance
*odistance
;
483 for (rn
= route_top(o
->distance_table
); rn
; rn
= route_next(rn
))
484 if ((odistance
= rn
->info
) != NULL
) {
485 if (odistance
->access_list
)
486 free(odistance
->access_list
);
487 ospf6_distance_free(odistance
);
489 route_unlock_node(rn
);
493 uint8_t ospf6_distance_apply(struct prefix_ipv6
*p
, struct ospf6_route
* or)
501 if (o
->distance_intra
)
502 if (or->path
.type
== OSPF6_PATH_TYPE_INTRA
)
503 return o
->distance_intra
;
505 if (o
->distance_inter
)
506 if (or->path
.type
== OSPF6_PATH_TYPE_INTER
)
507 return o
->distance_inter
;
509 if (o
->distance_external
)
510 if (or->path
.type
== OSPF6_PATH_TYPE_EXTERNAL1
||
511 or->path
.type
== OSPF6_PATH_TYPE_EXTERNAL2
)
512 return o
->distance_external
;
515 return o
->distance_all
;
520 static void ospf6_zebra_connected(struct zclient
*zclient
)
522 /* Send the client registration */
523 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, VRF_DEFAULT
);
525 zclient_send_reg_requests(zclient
, VRF_DEFAULT
);
528 void ospf6_zebra_init(struct thread_master
*master
)
530 /* Allocate zebra structure. */
531 zclient
= zclient_new(master
, &zclient_options_default
);
532 zclient_init(zclient
, ZEBRA_ROUTE_OSPF6
, 0, &ospf6d_privs
);
533 zclient
->zebra_connected
= ospf6_zebra_connected
;
534 zclient
->router_id_update
= ospf6_router_id_update_zebra
;
535 zclient
->interface_address_add
= ospf6_zebra_if_address_update_add
;
536 zclient
->interface_address_delete
=
537 ospf6_zebra_if_address_update_delete
;
538 zclient
->redistribute_route_add
= ospf6_zebra_read_route
;
539 zclient
->redistribute_route_del
= ospf6_zebra_read_route
;
541 /* Install command element for zebra node. */
542 install_element(VIEW_NODE
, &show_ospf6_zebra_cmd
);
547 DEFUN (debug_ospf6_zebra_sendrecv
,
548 debug_ospf6_zebra_sendrecv_cmd
,
549 "debug ospf6 zebra [<send|recv>]",
552 "Debug connection between zebra\n"
553 "Debug Sending zebra\n"
554 "Debug Receiving zebra\n"
557 int idx_send_recv
= 3;
558 unsigned char level
= 0;
561 if (strmatch(argv
[idx_send_recv
]->text
, "send"))
562 level
= OSPF6_DEBUG_ZEBRA_SEND
;
563 else if (strmatch(argv
[idx_send_recv
]->text
, "recv"))
564 level
= OSPF6_DEBUG_ZEBRA_RECV
;
566 level
= OSPF6_DEBUG_ZEBRA_SEND
| OSPF6_DEBUG_ZEBRA_RECV
;
568 OSPF6_DEBUG_ZEBRA_ON(level
);
572 DEFUN (no_debug_ospf6_zebra_sendrecv
,
573 no_debug_ospf6_zebra_sendrecv_cmd
,
574 "no debug ospf6 zebra [<send|recv>]",
578 "Debug connection between zebra\n"
579 "Debug Sending zebra\n"
580 "Debug Receiving zebra\n"
583 int idx_send_recv
= 4;
584 unsigned char level
= 0;
587 if (strmatch(argv
[idx_send_recv
]->text
, "send"))
588 level
= OSPF6_DEBUG_ZEBRA_SEND
;
589 else if (strmatch(argv
[idx_send_recv
]->text
, "recv"))
590 level
= OSPF6_DEBUG_ZEBRA_RECV
;
592 level
= OSPF6_DEBUG_ZEBRA_SEND
| OSPF6_DEBUG_ZEBRA_RECV
;
594 OSPF6_DEBUG_ZEBRA_OFF(level
);
599 int config_write_ospf6_debug_zebra(struct vty
*vty
)
601 if (IS_OSPF6_DEBUG_ZEBRA(SEND
) && IS_OSPF6_DEBUG_ZEBRA(RECV
))
602 vty_out(vty
, "debug ospf6 zebra\n");
604 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
605 vty_out(vty
, "debug ospf6 zebra send\n");
606 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
607 vty_out(vty
, "debug ospf6 zebra recv\n");
612 void install_element_ospf6_debug_zebra(void)
614 install_element(ENABLE_NODE
, &debug_ospf6_zebra_sendrecv_cmd
);
615 install_element(ENABLE_NODE
, &no_debug_ospf6_zebra_sendrecv_cmd
);
616 install_element(CONFIG_NODE
, &debug_ospf6_zebra_sendrecv_cmd
);
617 install_element(CONFIG_NODE
, &no_debug_ospf6_zebra_sendrecv_cmd
);