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 /* Inteface addition message from zebra. */
101 static int ospf6_zebra_if_add(ZAPI_CALLBACK_ARGS
)
103 struct interface
*ifp
;
105 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
106 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
107 zlog_debug("Zebra Interface add: %s index %d mtu %d", ifp
->name
,
108 ifp
->ifindex
, ifp
->mtu6
);
109 ospf6_interface_if_add(ifp
);
113 static int ospf6_zebra_if_del(ZAPI_CALLBACK_ARGS
)
115 struct interface
*ifp
;
117 if (!(ifp
= zebra_interface_state_read(zclient
->ibuf
, vrf_id
)))
121 zlog_warn("Zebra: got delete of %s, but interface is still up",
124 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
125 zlog_debug("Zebra Interface delete: %s index %d mtu %d",
126 ifp
->name
, ifp
->ifindex
, ifp
->mtu6
);
128 if_set_index(ifp
, IFINDEX_INTERNAL
);
132 static int ospf6_zebra_if_state_update(ZAPI_CALLBACK_ARGS
)
134 struct interface
*ifp
;
136 ifp
= zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
140 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
142 "Zebra Interface state change: "
143 "%s index %d flags %llx metric %d mtu %d bandwidth %d",
144 ifp
->name
, ifp
->ifindex
, (unsigned long long)ifp
->flags
,
145 ifp
->metric
, ifp
->mtu6
, ifp
->bandwidth
);
147 ospf6_interface_state_update(ifp
);
151 static int ospf6_zebra_if_address_update_add(ZAPI_CALLBACK_ARGS
)
156 c
= zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD
,
157 zclient
->ibuf
, vrf_id
);
161 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
162 zlog_debug("Zebra Interface address add: %s %5s %s/%d",
163 c
->ifp
->name
, prefix_family_str(c
->address
),
164 inet_ntop(c
->address
->family
, &c
->address
->u
.prefix
,
166 c
->address
->prefixlen
);
168 if (c
->address
->family
== AF_INET6
) {
169 ospf6_interface_state_update(c
->ifp
);
170 ospf6_interface_connected_route_update(c
->ifp
);
175 static int ospf6_zebra_if_address_update_delete(ZAPI_CALLBACK_ARGS
)
180 c
= zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE
,
181 zclient
->ibuf
, vrf_id
);
185 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
186 zlog_debug("Zebra Interface address delete: %s %5s %s/%d",
187 c
->ifp
->name
, prefix_family_str(c
->address
),
188 inet_ntop(c
->address
->family
, &c
->address
->u
.prefix
,
190 c
->address
->prefixlen
);
192 if (c
->address
->family
== AF_INET6
) {
193 ospf6_interface_connected_route_update(c
->ifp
);
194 ospf6_interface_state_update(c
->ifp
);
202 static int ospf6_zebra_read_route(ZAPI_CALLBACK_ARGS
)
204 struct zapi_route api
;
205 unsigned long ifindex
;
206 struct in6_addr
*nexthop
;
211 if (zapi_route_decode(zclient
->ibuf
, &api
) < 0)
214 /* we completely ignore srcdest routes for now. */
215 if (CHECK_FLAG(api
.message
, ZAPI_MESSAGE_SRCPFX
))
218 if (IN6_IS_ADDR_LINKLOCAL(&api
.prefix
.u
.prefix6
))
221 ifindex
= api
.nexthops
[0].ifindex
;
222 nexthop
= &api
.nexthops
[0].gate
.ipv6
;
224 if (IS_OSPF6_DEBUG_ZEBRA(RECV
)) {
225 char prefixstr
[PREFIX2STR_BUFFER
], nexthopstr
[128];
226 prefix2str((struct prefix
*)&api
.prefix
, prefixstr
,
228 inet_ntop(AF_INET6
, nexthop
, nexthopstr
, sizeof(nexthopstr
));
231 "Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %" ROUTE_TAG_PRI
,
232 (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
? "add"
234 zebra_route_string(api
.type
), prefixstr
, nexthopstr
,
238 if (cmd
== ZEBRA_REDISTRIBUTE_ROUTE_ADD
)
239 ospf6_asbr_redistribute_add(api
.type
, ifindex
, &api
.prefix
,
240 api
.nexthop_num
, nexthop
, api
.tag
);
242 ospf6_asbr_redistribute_remove(api
.type
, ifindex
, &api
.prefix
);
248 show_ospf6_zebra_cmd
,
249 "show ipv6 ospf6 zebra",
256 if (zclient
== NULL
) {
257 vty_out(vty
, "Not connected to zebra\n");
261 vty_out(vty
, "Zebra Information\n");
262 vty_out(vty
, " fail: %d\n", zclient
->fail
);
263 vty_out(vty
, " redistribute default: %d\n",
264 vrf_bitmap_check(zclient
->default_information
[AFI_IP6
],
266 vty_out(vty
, " redistribute:");
267 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++) {
268 if (vrf_bitmap_check(zclient
->redist
[AFI_IP6
][i
], VRF_DEFAULT
))
269 vty_out(vty
, " %s", zebra_route_string(i
));
277 static void ospf6_zebra_route_update(int type
, struct ospf6_route
*request
)
279 struct zapi_route api
;
280 char buf
[PREFIX2STR_BUFFER
];
285 if (IS_OSPF6_DEBUG_ZEBRA(SEND
)) {
286 prefix2str(&request
->prefix
, buf
, sizeof(buf
));
287 zlog_debug("Send %s route: %s",
288 (type
== REM
? "remove" : "add"), buf
);
291 if (zclient
->sock
< 0) {
292 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
293 zlog_debug(" Not connected to Zebra");
297 if (request
->path
.origin
.adv_router
== ospf6
->router_id
298 && (request
->path
.type
== OSPF6_PATH_TYPE_EXTERNAL1
299 || request
->path
.type
== OSPF6_PATH_TYPE_EXTERNAL2
)) {
300 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
301 zlog_debug(" Ignore self-originated external route");
305 /* If removing is the best path and if there's another path,
306 treat this request as add the secondary path */
307 if (type
== REM
&& ospf6_route_is_best(request
) && request
->next
308 && ospf6_route_is_same(request
, request
->next
)) {
309 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
311 " Best-path removal resulted Sencondary addition");
313 request
= request
->next
;
316 /* Only the best path will be sent to zebra. */
317 if (!ospf6_route_is_best(request
)) {
318 /* this is not preferred best route, ignore */
319 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
320 zlog_debug(" Ignore non-best route");
324 nhcount
= ospf6_route_num_nexthops(request
);
326 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
327 zlog_debug(" No nexthop, ignore");
331 dest
= &request
->prefix
;
333 memset(&api
, 0, sizeof(api
));
334 api
.vrf_id
= VRF_DEFAULT
;
335 api
.type
= ZEBRA_ROUTE_OSPF6
;
336 api
.safi
= SAFI_UNICAST
;
338 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
339 api
.nexthop_num
= MIN(nhcount
, MULTIPATH_NUM
);
340 ospf6_route_zebra_copy_nexthops(request
, api
.nexthops
, api
.nexthop_num
);
341 SET_FLAG(api
.message
, ZAPI_MESSAGE_METRIC
);
342 api
.metric
= (request
->path
.metric_type
== 2 ? request
->path
.u
.cost_e2
343 : request
->path
.cost
);
344 if (request
->path
.tag
) {
345 SET_FLAG(api
.message
, ZAPI_MESSAGE_TAG
);
346 api
.tag
= request
->path
.tag
;
349 SET_FLAG(api
.message
, ZAPI_MESSAGE_DISTANCE
);
351 ospf6_distance_apply((struct prefix_ipv6
*)dest
, request
);
354 ret
= zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
356 ret
= zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, &api
);
359 flog_err(EC_LIB_ZAPI_SOCKET
,
360 "zclient_route_send() %s failed: %s",
361 (type
== REM
? "delete" : "add"),
362 safe_strerror(errno
));
367 void ospf6_zebra_route_update_add(struct ospf6_route
*request
)
369 ospf6_zebra_route_update(ADD
, request
);
372 void ospf6_zebra_route_update_remove(struct ospf6_route
*request
)
374 ospf6_zebra_route_update(REM
, request
);
377 void ospf6_zebra_add_discard(struct ospf6_route
*request
)
379 struct zapi_route api
;
380 char buf
[INET6_ADDRSTRLEN
];
381 struct prefix
*dest
= &request
->prefix
;
383 if (!CHECK_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
)) {
384 memset(&api
, 0, sizeof(api
));
385 api
.vrf_id
= VRF_DEFAULT
;
386 api
.type
= ZEBRA_ROUTE_OSPF6
;
387 api
.safi
= SAFI_UNICAST
;
389 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
391 zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, &api
);
393 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
394 zlog_debug("Zebra: Route add discard %s/%d",
395 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
399 SET_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
);
401 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
403 "Zebra: Blackhole route present already %s/%d",
404 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
410 void ospf6_zebra_delete_discard(struct ospf6_route
*request
)
412 struct zapi_route api
;
413 char buf
[INET6_ADDRSTRLEN
];
414 struct prefix
*dest
= &request
->prefix
;
416 if (CHECK_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
)) {
417 memset(&api
, 0, sizeof(api
));
418 api
.vrf_id
= VRF_DEFAULT
;
419 api
.type
= ZEBRA_ROUTE_OSPF6
;
420 api
.safi
= SAFI_UNICAST
;
422 zapi_route_set_blackhole(&api
, BLACKHOLE_NULL
);
424 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
426 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
427 zlog_debug("Zebra: Route delete discard %s/%d",
428 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
432 UNSET_FLAG(request
->flag
, OSPF6_ROUTE_BLACKHOLE_ADDED
);
434 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
436 "Zebra: Blackhole route already deleted %s/%d",
437 inet_ntop(AF_INET6
, &dest
->u
.prefix6
, buf
,
443 static struct ospf6_distance
*ospf6_distance_new(void)
445 return XCALLOC(MTYPE_OSPF6_DISTANCE
, sizeof(struct ospf6_distance
));
448 static void ospf6_distance_free(struct ospf6_distance
*odistance
)
450 XFREE(MTYPE_OSPF6_DISTANCE
, odistance
);
453 int ospf6_distance_set(struct vty
*vty
, struct ospf6
*o
,
454 const char *distance_str
, const char *ip_str
,
455 const char *access_list_str
)
458 struct prefix_ipv6 p
;
460 struct route_node
*rn
;
461 struct ospf6_distance
*odistance
;
463 ret
= str2prefix_ipv6(ip_str
, &p
);
465 vty_out(vty
, "Malformed prefix\n");
466 return CMD_WARNING_CONFIG_FAILED
;
469 distance
= atoi(distance_str
);
471 /* Get OSPF6 distance node. */
472 rn
= route_node_get(o
->distance_table
, (struct prefix
*)&p
);
474 odistance
= rn
->info
;
475 route_unlock_node(rn
);
477 odistance
= ospf6_distance_new();
478 rn
->info
= odistance
;
481 /* Set distance value. */
482 odistance
->distance
= distance
;
484 /* Reset access-list configuration. */
485 if (odistance
->access_list
) {
486 free(odistance
->access_list
);
487 odistance
->access_list
= NULL
;
490 odistance
->access_list
= strdup(access_list_str
);
495 int ospf6_distance_unset(struct vty
*vty
, struct ospf6
*o
,
496 const char *distance_str
, const char *ip_str
,
497 const char *access_list_str
)
500 struct prefix_ipv6 p
;
501 struct route_node
*rn
;
502 struct ospf6_distance
*odistance
;
504 ret
= str2prefix_ipv6(ip_str
, &p
);
506 vty_out(vty
, "Malformed prefix\n");
507 return CMD_WARNING_CONFIG_FAILED
;
510 rn
= route_node_lookup(o
->distance_table
, (struct prefix
*)&p
);
512 vty_out(vty
, "Cant't find specified prefix\n");
513 return CMD_WARNING_CONFIG_FAILED
;
516 odistance
= rn
->info
;
518 if (odistance
->access_list
)
519 free(odistance
->access_list
);
520 ospf6_distance_free(odistance
);
523 route_unlock_node(rn
);
524 route_unlock_node(rn
);
529 void ospf6_distance_reset(struct ospf6
*o
)
531 struct route_node
*rn
;
532 struct ospf6_distance
*odistance
;
534 for (rn
= route_top(o
->distance_table
); rn
; rn
= route_next(rn
))
535 if ((odistance
= rn
->info
) != NULL
) {
536 if (odistance
->access_list
)
537 free(odistance
->access_list
);
538 ospf6_distance_free(odistance
);
540 route_unlock_node(rn
);
544 uint8_t ospf6_distance_apply(struct prefix_ipv6
*p
, struct ospf6_route
* or)
552 if (o
->distance_intra
)
553 if (or->path
.type
== OSPF6_PATH_TYPE_INTRA
)
554 return o
->distance_intra
;
556 if (o
->distance_inter
)
557 if (or->path
.type
== OSPF6_PATH_TYPE_INTER
)
558 return o
->distance_inter
;
560 if (o
->distance_external
)
561 if (or->path
.type
== OSPF6_PATH_TYPE_EXTERNAL1
||
562 or->path
.type
== OSPF6_PATH_TYPE_EXTERNAL2
)
563 return o
->distance_external
;
566 return o
->distance_all
;
571 static void ospf6_zebra_connected(struct zclient
*zclient
)
573 /* Send the client registration */
574 bfd_client_sendmsg(zclient
, ZEBRA_BFD_CLIENT_REGISTER
, VRF_DEFAULT
);
576 zclient_send_reg_requests(zclient
, VRF_DEFAULT
);
579 void ospf6_zebra_init(struct thread_master
*master
)
581 /* Allocate zebra structure. */
582 zclient
= zclient_new(master
, &zclient_options_default
);
583 zclient_init(zclient
, ZEBRA_ROUTE_OSPF6
, 0, &ospf6d_privs
);
584 zclient
->zebra_connected
= ospf6_zebra_connected
;
585 zclient
->router_id_update
= ospf6_router_id_update_zebra
;
586 zclient
->interface_add
= ospf6_zebra_if_add
;
587 zclient
->interface_delete
= ospf6_zebra_if_del
;
588 zclient
->interface_up
= ospf6_zebra_if_state_update
;
589 zclient
->interface_down
= ospf6_zebra_if_state_update
;
590 zclient
->interface_address_add
= ospf6_zebra_if_address_update_add
;
591 zclient
->interface_address_delete
=
592 ospf6_zebra_if_address_update_delete
;
593 zclient
->redistribute_route_add
= ospf6_zebra_read_route
;
594 zclient
->redistribute_route_del
= ospf6_zebra_read_route
;
596 /* Install command element for zebra node. */
597 install_element(VIEW_NODE
, &show_ospf6_zebra_cmd
);
602 DEFUN (debug_ospf6_zebra_sendrecv
,
603 debug_ospf6_zebra_sendrecv_cmd
,
604 "debug ospf6 zebra [<send|recv>]",
607 "Debug connection between zebra\n"
608 "Debug Sending zebra\n"
609 "Debug Receiving zebra\n"
612 int idx_send_recv
= 3;
613 unsigned char level
= 0;
616 if (strmatch(argv
[idx_send_recv
]->text
, "send"))
617 level
= OSPF6_DEBUG_ZEBRA_SEND
;
618 else if (strmatch(argv
[idx_send_recv
]->text
, "recv"))
619 level
= OSPF6_DEBUG_ZEBRA_RECV
;
621 level
= OSPF6_DEBUG_ZEBRA_SEND
| OSPF6_DEBUG_ZEBRA_RECV
;
623 OSPF6_DEBUG_ZEBRA_ON(level
);
627 DEFUN (no_debug_ospf6_zebra_sendrecv
,
628 no_debug_ospf6_zebra_sendrecv_cmd
,
629 "no debug ospf6 zebra [<send|recv>]",
633 "Debug connection between zebra\n"
634 "Debug Sending zebra\n"
635 "Debug Receiving zebra\n"
638 int idx_send_recv
= 4;
639 unsigned char level
= 0;
642 if (strmatch(argv
[idx_send_recv
]->text
, "send"))
643 level
= OSPF6_DEBUG_ZEBRA_SEND
;
644 else if (strmatch(argv
[idx_send_recv
]->text
, "recv"))
645 level
= OSPF6_DEBUG_ZEBRA_RECV
;
647 level
= OSPF6_DEBUG_ZEBRA_SEND
| OSPF6_DEBUG_ZEBRA_RECV
;
649 OSPF6_DEBUG_ZEBRA_OFF(level
);
654 int config_write_ospf6_debug_zebra(struct vty
*vty
)
656 if (IS_OSPF6_DEBUG_ZEBRA(SEND
) && IS_OSPF6_DEBUG_ZEBRA(RECV
))
657 vty_out(vty
, "debug ospf6 zebra\n");
659 if (IS_OSPF6_DEBUG_ZEBRA(SEND
))
660 vty_out(vty
, "debug ospf6 zebra send\n");
661 if (IS_OSPF6_DEBUG_ZEBRA(RECV
))
662 vty_out(vty
, "debug ospf6 zebra recv\n");
667 void install_element_ospf6_debug_zebra(void)
669 install_element(ENABLE_NODE
, &debug_ospf6_zebra_sendrecv_cmd
);
670 install_element(ENABLE_NODE
, &no_debug_ospf6_zebra_sendrecv_cmd
);
671 install_element(CONFIG_NODE
, &debug_ospf6_zebra_sendrecv_cmd
);
672 install_element(CONFIG_NODE
, &no_debug_ospf6_zebra_sendrecv_cmd
);