2 * Copyright (C) 1998, 1999 Kunihiro Ishiguro
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
17 * along with GNU Zebra; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
34 #include "distribute.h"
40 #include "ripngd/ripngd.h"
41 #include "ripngd/ripng_route.h"
42 #include "ripngd/ripng_debug.h"
43 #include "ripngd/ripng_nexthop.h"
45 /* RIPng structure which includes many parameters related to RIPng
46 protocol. If ripng couldn't active or ripng doesn't configured,
47 ripng->fd must be negative value. */
48 struct ripng
*ripng
= NULL
;
56 extern struct zebra_privs_t ripngd_privs
;
60 ripng_output_process (struct interface
*, struct sockaddr_in6
*, int);
63 ripng_triggered_update (struct thread
*);
65 /* RIPng next hop specification. */
68 enum ripng_nexthop_type
73 struct in6_addr address
;
77 ripng_route_rte (struct ripng_info
*rinfo
)
79 return (rinfo
->type
== ZEBRA_ROUTE_RIPNG
&& rinfo
->sub_type
== RIPNG_ROUTE_RTE
);
82 /* Allocate new ripng information. */
86 struct ripng_info
*new;
88 new = XCALLOC (MTYPE_RIPNG_ROUTE
, sizeof (struct ripng_info
));
92 /* Free ripng information. */
94 ripng_info_free (struct ripng_info
*rinfo
)
96 XFREE (MTYPE_RIPNG_ROUTE
, rinfo
);
99 /* Create ripng socket. */
101 ripng_make_socket (void)
105 struct sockaddr_in6 ripaddr
;
107 sock
= socket (AF_INET6
, SOCK_DGRAM
, 0);
110 zlog (NULL
, LOG_ERR
, "Can't make ripng socket");
114 ret
= setsockopt_so_recvbuf (sock
, 8096);
117 ret
= setsockopt_ipv6_pktinfo (sock
, 1);
120 ret
= setsockopt_ipv6_multicast_hops (sock
, 255);
123 ret
= setsockopt_ipv6_multicast_loop (sock
, 0);
126 ret
= setsockopt_ipv6_hoplimit (sock
, 1);
130 memset (&ripaddr
, 0, sizeof (ripaddr
));
131 ripaddr
.sin6_family
= AF_INET6
;
133 ripaddr
.sin6_len
= sizeof (struct sockaddr_in6
);
134 #endif /* SIN6_LEN */
135 ripaddr
.sin6_port
= htons (RIPNG_PORT_DEFAULT
);
137 if (ripngd_privs
.change (ZPRIVS_RAISE
))
138 zlog_err ("ripng_make_socket: could not raise privs");
140 ret
= bind (sock
, (struct sockaddr
*) &ripaddr
, sizeof (ripaddr
));
143 zlog (NULL
, LOG_ERR
, "Can't bind ripng socket: %s.", safe_strerror (errno
));
144 if (ripngd_privs
.change (ZPRIVS_LOWER
))
145 zlog_err ("ripng_make_socket: could not lower privs");
148 if (ripngd_privs
.change (ZPRIVS_LOWER
))
149 zlog_err ("ripng_make_socket: could not lower privs");
153 /* Send RIPng packet. */
155 ripng_send_packet (caddr_t buf
, int bufsize
, struct sockaddr_in6
*to
,
156 struct interface
*ifp
)
161 struct cmsghdr
*cmsgptr
;
163 struct in6_pktinfo
*pkt
;
164 struct sockaddr_in6 addr
;
166 if (IS_RIPNG_DEBUG_SEND
) {
168 zlog_debug ("send to %s", inet6_ntoa (to
->sin6_addr
));
169 zlog_debug (" send interface %s", ifp
->name
);
170 zlog_debug (" send packet size %d", bufsize
);
173 memset (&addr
, 0, sizeof (struct sockaddr_in6
));
174 addr
.sin6_family
= AF_INET6
;
176 addr
.sin6_len
= sizeof (struct sockaddr_in6
);
177 #endif /* SIN6_LEN */
178 addr
.sin6_flowinfo
= htonl (RIPNG_PRIORITY_DEFAULT
);
180 /* When destination is specified. */
183 addr
.sin6_addr
= to
->sin6_addr
;
184 addr
.sin6_port
= to
->sin6_port
;
188 inet_pton(AF_INET6
, RIPNG_GROUP
, &addr
.sin6_addr
);
189 addr
.sin6_port
= htons (RIPNG_PORT_DEFAULT
);
192 msg
.msg_name
= (void *) &addr
;
193 msg
.msg_namelen
= sizeof (struct sockaddr_in6
);
196 msg
.msg_control
= (void *) adata
;
197 msg
.msg_controllen
= CMSG_SPACE(sizeof(struct in6_pktinfo
));
200 iov
.iov_len
= bufsize
;
202 cmsgptr
= (struct cmsghdr
*)adata
;
203 cmsgptr
->cmsg_len
= CMSG_LEN(sizeof (struct in6_pktinfo
));
204 cmsgptr
->cmsg_level
= IPPROTO_IPV6
;
205 cmsgptr
->cmsg_type
= IPV6_PKTINFO
;
207 pkt
= (struct in6_pktinfo
*) CMSG_DATA (cmsgptr
);
208 memset (&pkt
->ipi6_addr
, 0, sizeof (struct in6_addr
));
209 pkt
->ipi6_ifindex
= ifp
->ifindex
;
211 ret
= sendmsg (ripng
->sock
, &msg
, 0);
215 zlog_err ("RIPng send fail on %s to %s: %s", ifp
->name
,
216 inet6_ntoa (to
->sin6_addr
), safe_strerror (errno
));
218 zlog_err ("RIPng send fail on %s: %s", ifp
->name
, safe_strerror (errno
));
224 /* Receive UDP RIPng packet from socket. */
226 ripng_recv_packet (int sock
, u_char
*buf
, int bufsize
,
227 struct sockaddr_in6
*from
, unsigned int *ifindex
,
233 struct cmsghdr
*cmsgptr
;
236 /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this
237 point I can't determine size of cmsghdr */
240 /* Fill in message and iovec. */
241 msg
.msg_name
= (void *) from
;
242 msg
.msg_namelen
= sizeof (struct sockaddr_in6
);
245 msg
.msg_control
= (void *) adata
;
246 msg
.msg_controllen
= sizeof adata
;
248 iov
.iov_len
= bufsize
;
250 /* If recvmsg fail return minus value. */
251 ret
= recvmsg (sock
, &msg
, 0);
255 for (cmsgptr
= ZCMSG_FIRSTHDR(&msg
); cmsgptr
!= NULL
;
256 cmsgptr
= CMSG_NXTHDR(&msg
, cmsgptr
))
258 /* I want interface index which this packet comes from. */
259 if (cmsgptr
->cmsg_level
== IPPROTO_IPV6
&&
260 cmsgptr
->cmsg_type
== IPV6_PKTINFO
)
262 struct in6_pktinfo
*ptr
;
264 ptr
= (struct in6_pktinfo
*) CMSG_DATA (cmsgptr
);
265 *ifindex
= ptr
->ipi6_ifindex
;
266 dst
= ptr
->ipi6_addr
;
269 zlog_warn ("Interface index returned by IPV6_PKTINFO is zero");
272 /* Incoming packet's multicast hop limit. */
273 if (cmsgptr
->cmsg_level
== IPPROTO_IPV6
&&
274 cmsgptr
->cmsg_type
== IPV6_HOPLIMIT
)
275 *hoplimit
= *((int *) CMSG_DATA (cmsgptr
));
278 /* Hoplimit check shold be done when destination address is
279 multicast address. */
280 if (! IN6_IS_ADDR_MULTICAST (&dst
))
286 /* Dump rip packet */
288 ripng_packet_dump (struct ripng_packet
*packet
, int size
, const char *sndrcv
)
292 const char *command_str
;
294 /* Set command string. */
295 if (packet
->command
== RIPNG_REQUEST
)
296 command_str
= "request";
297 else if (packet
->command
== RIPNG_RESPONSE
)
298 command_str
= "response";
300 command_str
= "unknown";
302 /* Dump packet header. */
303 zlog_debug ("%s %s version %d packet size %d",
304 sndrcv
, command_str
, packet
->version
, size
);
306 /* Dump each routing table entry. */
309 for (lim
= (caddr_t
) packet
+ size
; (caddr_t
) rte
< lim
; rte
++)
311 if (rte
->metric
== RIPNG_METRIC_NEXTHOP
)
312 zlog_debug (" nexthop %s/%d", inet6_ntoa (rte
->addr
), rte
->prefixlen
);
314 zlog_debug (" %s/%d metric %d tag %d",
315 inet6_ntoa (rte
->addr
), rte
->prefixlen
,
316 rte
->metric
, ntohs (rte
->tag
));
320 /* RIPng next hop address RTE (Route Table Entry). */
322 ripng_nexthop_rte (struct rte
*rte
,
323 struct sockaddr_in6
*from
,
324 struct ripng_nexthop
*nexthop
)
326 char buf
[INET6_BUFSIZ
];
328 /* Logging before checking RTE. */
329 if (IS_RIPNG_DEBUG_RECV
)
330 zlog_debug ("RIPng nexthop RTE address %s tag %d prefixlen %d",
331 inet6_ntoa (rte
->addr
), ntohs (rte
->tag
), rte
->prefixlen
);
333 /* RFC2080 2.1.1 Next Hop:
334 The route tag and prefix length in the next hop RTE must be
335 set to zero on sending and ignored on receiption. */
336 if (ntohs (rte
->tag
) != 0)
337 zlog_warn ("RIPng nexthop RTE with non zero tag value %d from %s",
338 ntohs (rte
->tag
), inet6_ntoa (from
->sin6_addr
));
340 if (rte
->prefixlen
!= 0)
341 zlog_warn ("RIPng nexthop RTE with non zero prefixlen value %d from %s",
342 rte
->prefixlen
, inet6_ntoa (from
->sin6_addr
));
344 /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a
345 next hop RTE indicates that the next hop address should be the
346 originator of the RIPng advertisement. An address specified as a
347 next hop must be a link-local address. */
348 if (IN6_IS_ADDR_UNSPECIFIED (&rte
->addr
))
350 nexthop
->flag
= RIPNG_NEXTHOP_UNSPEC
;
351 memset (&nexthop
->address
, 0, sizeof (struct in6_addr
));
355 if (IN6_IS_ADDR_LINKLOCAL (&rte
->addr
))
357 nexthop
->flag
= RIPNG_NEXTHOP_ADDRESS
;
358 IPV6_ADDR_COPY (&nexthop
->address
, &rte
->addr
);
362 /* The purpose of the next hop RTE is to eliminate packets being
363 routed through extra hops in the system. It is particularly useful
364 when RIPng is not being run on all of the routers on a network.
365 Note that next hop RTE is "advisory". That is, if the provided
366 information is ignored, a possibly sub-optimal, but absolutely
367 valid, route may be taken. If the received next hop address is not
368 a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */
369 zlog_warn ("RIPng nexthop RTE with non link-local address %s from %s",
370 inet6_ntoa (rte
->addr
),
371 inet_ntop (AF_INET6
, &from
->sin6_addr
, buf
, INET6_BUFSIZ
));
373 nexthop
->flag
= RIPNG_NEXTHOP_UNSPEC
;
374 memset (&nexthop
->address
, 0, sizeof (struct in6_addr
));
379 /* If ifp has same link-local address then return 1. */
381 ripng_lladdr_check (struct interface
*ifp
, struct in6_addr
*addr
)
383 struct listnode
*node
;
384 struct connected
*connected
;
387 for (ALL_LIST_ELEMENTS_RO (ifp
->connected
, node
, connected
))
389 p
= connected
->address
;
391 if (p
->family
== AF_INET6
&&
392 IN6_IS_ADDR_LINKLOCAL (&p
->u
.prefix6
) &&
393 IN6_ARE_ADDR_EQUAL (&p
->u
.prefix6
, addr
))
399 /* RIPng route garbage collect timer. */
401 ripng_garbage_collect (struct thread
*t
)
403 struct ripng_info
*rinfo
;
404 struct route_node
*rp
;
406 rinfo
= THREAD_ARG (t
);
407 rinfo
->t_garbage_collect
= NULL
;
409 /* Off timeout timer. */
410 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
412 /* Get route_node pointer. */
415 /* Unlock route_node. */
417 route_unlock_node (rp
);
419 /* Free RIPng routing information. */
420 ripng_info_free (rinfo
);
425 /* Timeout RIPng routes. */
427 ripng_timeout (struct thread
*t
)
429 struct ripng_info
*rinfo
;
430 struct route_node
*rp
;
432 rinfo
= THREAD_ARG (t
);
433 rinfo
->t_timeout
= NULL
;
435 /* Get route_node pointer. */
438 /* - The garbage-collection timer is set for 120 seconds. */
439 RIPNG_TIMER_ON (rinfo
->t_garbage_collect
, ripng_garbage_collect
,
440 ripng
->garbage_time
);
442 /* Delete this route from the kernel. */
443 ripng_zebra_ipv6_delete ((struct prefix_ipv6
*)&rp
->p
, &rinfo
->nexthop
,
445 /* - The metric for the route is set to 16 (infinity). This causes
446 the route to be removed from service. */
447 rinfo
->metric
= RIPNG_METRIC_INFINITY
;
448 rinfo
->flags
&= ~RIPNG_RTF_FIB
;
450 /* Aggregate count decrement. */
451 ripng_aggregate_decrement (rp
, rinfo
);
453 /* - The route change flag is to indicate that this entry has been
455 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
457 /* - The output process is signalled to trigger a response. */
458 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
464 ripng_timeout_update (struct ripng_info
*rinfo
)
466 if (rinfo
->metric
!= RIPNG_METRIC_INFINITY
)
468 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
469 RIPNG_TIMER_ON (rinfo
->t_timeout
, ripng_timeout
, ripng
->timeout_time
);
474 ripng_incoming_filter (struct prefix_ipv6
*p
, struct ripng_interface
*ri
)
476 struct distribute
*dist
;
477 struct access_list
*alist
;
478 struct prefix_list
*plist
;
480 /* Input distribute-list filtering. */
481 if (ri
->list
[RIPNG_FILTER_IN
])
483 if (access_list_apply (ri
->list
[RIPNG_FILTER_IN
],
484 (struct prefix
*) p
) == FILTER_DENY
)
486 if (IS_RIPNG_DEBUG_PACKET
)
487 zlog_debug ("%s/%d filtered by distribute in",
488 inet6_ntoa (p
->prefix
), p
->prefixlen
);
492 if (ri
->prefix
[RIPNG_FILTER_IN
])
494 if (prefix_list_apply (ri
->prefix
[RIPNG_FILTER_IN
],
495 (struct prefix
*) p
) == PREFIX_DENY
)
497 if (IS_RIPNG_DEBUG_PACKET
)
498 zlog_debug ("%s/%d filtered by prefix-list in",
499 inet6_ntoa (p
->prefix
), p
->prefixlen
);
504 /* All interface filter check. */
505 dist
= distribute_lookup (NULL
);
508 if (dist
->list
[DISTRIBUTE_IN
])
510 alist
= access_list_lookup (AFI_IP6
, dist
->list
[DISTRIBUTE_IN
]);
514 if (access_list_apply (alist
,
515 (struct prefix
*) p
) == FILTER_DENY
)
517 if (IS_RIPNG_DEBUG_PACKET
)
518 zlog_debug ("%s/%d filtered by distribute in",
519 inet6_ntoa (p
->prefix
), p
->prefixlen
);
524 if (dist
->prefix
[DISTRIBUTE_IN
])
526 plist
= prefix_list_lookup (AFI_IP6
, dist
->prefix
[DISTRIBUTE_IN
]);
530 if (prefix_list_apply (plist
,
531 (struct prefix
*) p
) == PREFIX_DENY
)
533 if (IS_RIPNG_DEBUG_PACKET
)
534 zlog_debug ("%s/%d filtered by prefix-list in",
535 inet6_ntoa (p
->prefix
), p
->prefixlen
);
545 ripng_outgoing_filter (struct prefix_ipv6
*p
, struct ripng_interface
*ri
)
547 struct distribute
*dist
;
548 struct access_list
*alist
;
549 struct prefix_list
*plist
;
551 if (ri
->list
[RIPNG_FILTER_OUT
])
553 if (access_list_apply (ri
->list
[RIPNG_FILTER_OUT
],
554 (struct prefix
*) p
) == FILTER_DENY
)
556 if (IS_RIPNG_DEBUG_PACKET
)
557 zlog_debug ("%s/%d is filtered by distribute out",
558 inet6_ntoa (p
->prefix
), p
->prefixlen
);
562 if (ri
->prefix
[RIPNG_FILTER_OUT
])
564 if (prefix_list_apply (ri
->prefix
[RIPNG_FILTER_OUT
],
565 (struct prefix
*) p
) == PREFIX_DENY
)
567 if (IS_RIPNG_DEBUG_PACKET
)
568 zlog_debug ("%s/%d is filtered by prefix-list out",
569 inet6_ntoa (p
->prefix
), p
->prefixlen
);
574 /* All interface filter check. */
575 dist
= distribute_lookup (NULL
);
578 if (dist
->list
[DISTRIBUTE_OUT
])
580 alist
= access_list_lookup (AFI_IP6
, dist
->list
[DISTRIBUTE_OUT
]);
584 if (access_list_apply (alist
,
585 (struct prefix
*) p
) == FILTER_DENY
)
587 if (IS_RIPNG_DEBUG_PACKET
)
588 zlog_debug ("%s/%d filtered by distribute out",
589 inet6_ntoa (p
->prefix
), p
->prefixlen
);
594 if (dist
->prefix
[DISTRIBUTE_OUT
])
596 plist
= prefix_list_lookup (AFI_IP6
, dist
->prefix
[DISTRIBUTE_OUT
]);
600 if (prefix_list_apply (plist
,
601 (struct prefix
*) p
) == PREFIX_DENY
)
603 if (IS_RIPNG_DEBUG_PACKET
)
604 zlog_debug ("%s/%d filtered by prefix-list out",
605 inet6_ntoa (p
->prefix
), p
->prefixlen
);
614 /* Process RIPng route according to RFC2080. */
616 ripng_route_process (struct rte
*rte
, struct sockaddr_in6
*from
,
617 struct ripng_nexthop
*ripng_nexthop
,
618 struct interface
*ifp
)
621 struct prefix_ipv6 p
;
622 struct route_node
*rp
;
623 struct ripng_info
*rinfo
;
624 struct ripng_interface
*ri
;
625 struct in6_addr
*nexthop
;
629 /* Make prefix structure. */
630 memset (&p
, 0, sizeof (struct prefix_ipv6
));
632 /* p.prefix = rte->addr; */
633 IPV6_ADDR_COPY (&p
.prefix
, &rte
->addr
);
634 p
.prefixlen
= rte
->prefixlen
;
636 /* Make sure mask is applied. */
637 /* XXX We have to check the prefix is valid or not before call
639 apply_mask_ipv6 (&p
);
641 /* Apply input filters. */
644 ret
= ripng_incoming_filter (&p
, ri
);
649 if (ri
->routemap
[RIPNG_FILTER_IN
])
652 struct ripng_info newinfo
;
654 memset (&newinfo
, 0, sizeof (struct ripng_info
));
655 newinfo
.type
= ZEBRA_ROUTE_RIPNG
;
656 newinfo
.sub_type
= RIPNG_ROUTE_RTE
;
657 if (ripng_nexthop
->flag
== RIPNG_NEXTHOP_ADDRESS
)
658 newinfo
.nexthop
= ripng_nexthop
->address
;
660 newinfo
.nexthop
= from
->sin6_addr
;
661 newinfo
.from
= from
->sin6_addr
;
662 newinfo
.ifindex
= ifp
->ifindex
;
663 newinfo
.metric
= rte
->metric
;
664 newinfo
.metric_out
= rte
->metric
; /* XXX */
665 newinfo
.tag
= ntohs(rte
->tag
); /* XXX */
667 ret
= route_map_apply (ri
->routemap
[RIPNG_FILTER_IN
],
668 (struct prefix
*)&p
, RMAP_RIPNG
, &newinfo
);
670 if (ret
== RMAP_DENYMATCH
)
672 if (IS_RIPNG_DEBUG_PACKET
)
673 zlog_debug ("RIPng %s/%d is filtered by route-map in",
674 inet6_ntoa (p
.prefix
), p
.prefixlen
);
678 /* Get back the object */
679 if (ripng_nexthop
->flag
== RIPNG_NEXTHOP_ADDRESS
) {
680 if (! IPV6_ADDR_SAME(&newinfo
.nexthop
, &ripng_nexthop
->address
) ) {
681 /* the nexthop get changed by the routemap */
682 if (IN6_IS_ADDR_LINKLOCAL(&newinfo
.nexthop
))
683 ripng_nexthop
->address
= newinfo
.nexthop
;
685 ripng_nexthop
->address
= in6addr_any
;
688 if (! IPV6_ADDR_SAME(&newinfo
.nexthop
, &from
->sin6_addr
) ) {
689 /* the nexthop get changed by the routemap */
690 if (IN6_IS_ADDR_LINKLOCAL(&newinfo
.nexthop
)) {
691 ripng_nexthop
->flag
= RIPNG_NEXTHOP_ADDRESS
;
692 ripng_nexthop
->address
= newinfo
.nexthop
;
696 rte
->tag
= htons(newinfo
.tag_out
); /* XXX */
697 rte
->metric
= newinfo
.metric_out
; /* XXX: the routemap uses the metric_out field */
700 /* Once the entry has been validated, update the metric by
701 * adding the cost of the network on wich the message
702 * arrived. If the result is greater than infinity, use infinity
703 * (RFC2453 Sec. 3.9.2)
706 /* Zebra ripngd can handle offset-list in. */
707 ret
= ripng_offset_list_apply_in (&p
, ifp
, &rte
->metric
);
709 /* If offset-list does not modify the metric use interface's
712 rte
->metric
+= ifp
->metric
;
714 if (rte
->metric
> RIPNG_METRIC_INFINITY
)
715 rte
->metric
= RIPNG_METRIC_INFINITY
;
717 /* Set nexthop pointer. */
718 if (ripng_nexthop
->flag
== RIPNG_NEXTHOP_ADDRESS
)
719 nexthop
= &ripng_nexthop
->address
;
721 nexthop
= &from
->sin6_addr
;
723 /* Lookup RIPng routing table. */
724 rp
= route_node_get (ripng
->table
, (struct prefix
*) &p
);
730 /* Redistributed route check. */
731 if (rinfo
->type
!= ZEBRA_ROUTE_RIPNG
732 && rinfo
->metric
!= RIPNG_METRIC_INFINITY
)
735 /* Local static route. */
736 if (rinfo
->type
== ZEBRA_ROUTE_RIPNG
737 && ((rinfo
->sub_type
== RIPNG_ROUTE_STATIC
) ||
738 (rinfo
->sub_type
== RIPNG_ROUTE_DEFAULT
))
739 && rinfo
->metric
!= RIPNG_METRIC_INFINITY
)
743 if (rp
->info
== NULL
)
745 /* Now, check to see whether there is already an explicit route
746 for the destination prefix. If there is no such route, add
747 this route to the routing table, unless the metric is
748 infinity (there is no point in adding a route which
750 if (rte
->metric
!= RIPNG_METRIC_INFINITY
)
752 rinfo
= ripng_info_new ();
754 /* - Setting the destination prefix and length to those in
759 /* - Setting the metric to the newly calculated metric (as
761 rinfo
->metric
= rte
->metric
;
762 rinfo
->tag
= ntohs (rte
->tag
);
764 /* - Set the next hop address to be the address of the router
765 from which the datagram came or the next hop address
766 specified by a next hop RTE. */
767 IPV6_ADDR_COPY (&rinfo
->nexthop
, nexthop
);
768 IPV6_ADDR_COPY (&rinfo
->from
, &from
->sin6_addr
);
769 rinfo
->ifindex
= ifp
->ifindex
;
771 /* - Initialize the timeout for the route. If the
772 garbage-collection timer is running for this route, stop it. */
773 ripng_timeout_update (rinfo
);
775 /* - Set the route change flag. */
776 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
778 /* - Signal the output process to trigger an update (see section
780 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
782 /* Finally, route goes into the kernel. */
783 rinfo
->type
= ZEBRA_ROUTE_RIPNG
;
784 rinfo
->sub_type
= RIPNG_ROUTE_RTE
;
786 ripng_zebra_ipv6_add (&p
, &rinfo
->nexthop
, rinfo
->ifindex
,
788 rinfo
->flags
|= RIPNG_RTF_FIB
;
790 /* Aggregate check. */
791 ripng_aggregate_increment (rp
, rinfo
);
798 /* If there is an existing route, compare the next hop address
799 to the address of the router from which the datagram came.
800 If this datagram is from the same router as the existing
801 route, reinitialize the timeout. */
802 same
= (IN6_ARE_ADDR_EQUAL (&rinfo
->from
, &from
->sin6_addr
)
803 && (rinfo
->ifindex
== ifp
->ifindex
));
806 ripng_timeout_update (rinfo
);
808 /* Next, compare the metrics. If the datagram is from the same
809 router as the existing route, and the new metric is different
810 than the old one; or, if the new metric is lower than the old
811 one; do the following actions: */
812 if ((same
&& rinfo
->metric
!= rte
->metric
) ||
813 rte
->metric
< rinfo
->metric
)
815 /* - Adopt the route from the datagram. That is, put the
816 new metric in, and adjust the next hop address (if
818 oldmetric
= rinfo
->metric
;
819 rinfo
->metric
= rte
->metric
;
820 rinfo
->tag
= ntohs (rte
->tag
);
821 IPV6_ADDR_COPY (&rinfo
->from
, &from
->sin6_addr
);
822 rinfo
->ifindex
= ifp
->ifindex
;
824 /* Should a new route to this network be established
825 while the garbage-collection timer is running, the
826 new route will replace the one that is about to be
827 deleted. In this case the garbage-collection timer
830 if (oldmetric
== RIPNG_METRIC_INFINITY
&&
831 rinfo
->metric
< RIPNG_METRIC_INFINITY
)
833 rinfo
->type
= ZEBRA_ROUTE_RIPNG
;
834 rinfo
->sub_type
= RIPNG_ROUTE_RTE
;
836 RIPNG_TIMER_OFF (rinfo
->t_garbage_collect
);
838 if (! IPV6_ADDR_SAME (&rinfo
->nexthop
, nexthop
))
839 IPV6_ADDR_COPY (&rinfo
->nexthop
, nexthop
);
841 ripng_zebra_ipv6_add (&p
, nexthop
, ifp
->ifindex
, rinfo
->metric
);
842 rinfo
->flags
|= RIPNG_RTF_FIB
;
844 /* The aggregation counter needs to be updated because
845 the prefixes, which are into the gc, have been
846 removed from the aggregator (see ripng_timout). */
847 ripng_aggregate_increment (rp
, rinfo
);
850 /* Update nexthop and/or metric value. */
851 if (oldmetric
!= RIPNG_METRIC_INFINITY
)
853 ripng_zebra_ipv6_delete (&p
, &rinfo
->nexthop
, rinfo
->ifindex
);
854 ripng_zebra_ipv6_add (&p
, nexthop
, ifp
->ifindex
, rinfo
->metric
);
855 rinfo
->flags
|= RIPNG_RTF_FIB
;
857 if (! IPV6_ADDR_SAME (&rinfo
->nexthop
, nexthop
))
858 IPV6_ADDR_COPY (&rinfo
->nexthop
, nexthop
);
861 /* - Set the route change flag and signal the output process
862 to trigger an update. */
863 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
864 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
866 /* - If the new metric is infinity, start the deletion
867 process (described above); */
868 if (rinfo
->metric
== RIPNG_METRIC_INFINITY
)
870 /* If the new metric is infinity, the deletion process
871 begins for the route, which is no longer used for
872 routing packets. Note that the deletion process is
873 started only when the metric is first set to
874 infinity. If the metric was already infinity, then a
875 new deletion process is not started. */
876 if (oldmetric
!= RIPNG_METRIC_INFINITY
)
878 /* - The garbage-collection timer is set for 120 seconds. */
879 RIPNG_TIMER_ON (rinfo
->t_garbage_collect
,
880 ripng_garbage_collect
, ripng
->garbage_time
);
881 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
883 /* - The metric for the route is set to 16
884 (infinity). This causes the route to be removed
886 ripng_zebra_ipv6_delete (&p
, &rinfo
->nexthop
, rinfo
->ifindex
);
887 rinfo
->flags
&= ~RIPNG_RTF_FIB
;
889 /* Aggregate count decrement. */
890 ripng_aggregate_decrement (rp
, rinfo
);
892 /* - The route change flag is to indicate that this
893 entry has been changed. */
894 /* - The output process is signalled to trigger a
896 ; /* Above processes are already done previously. */
901 /* otherwise, re-initialize the timeout. */
902 ripng_timeout_update (rinfo
);
905 /* Unlock tempolary lock of the route. */
906 route_unlock_node (rp
);
910 /* Add redistributed route to RIPng table. */
912 ripng_redistribute_add (int type
, int sub_type
, struct prefix_ipv6
*p
,
913 unsigned int ifindex
, struct in6_addr
*nexthop
)
915 struct route_node
*rp
;
916 struct ripng_info
*rinfo
;
918 /* Redistribute route */
919 if (IN6_IS_ADDR_LINKLOCAL (&p
->prefix
))
921 if (IN6_IS_ADDR_LOOPBACK (&p
->prefix
))
923 #if defined (MUSICA) || defined (LINUX)
924 /* XXX As long as the RIPng redistribution is applied to all the connected
925 * routes, one needs to filter the ::/96 prefixes.
926 * However it could be a wanted case, it will be removed soon.
928 if ((IN6_IS_ADDR_V4COMPAT(&p
->prefix
)) ||
929 (IN6_IS_ADDR_UNSPECIFIED (&p
->prefix
) && (p
->prefixlen
== 96)))
931 #endif /* MUSICA or LINUX */
933 rp
= route_node_get (ripng
->table
, (struct prefix
*) p
);
938 if (rinfo
->type
== ZEBRA_ROUTE_CONNECT
939 && rinfo
->sub_type
== RIPNG_ROUTE_INTERFACE
940 && rinfo
->metric
!= RIPNG_METRIC_INFINITY
) {
941 route_unlock_node (rp
);
945 /* Manually configured RIPng route check.
946 * They have the precedence on all the other entries.
948 if (rinfo
->type
== ZEBRA_ROUTE_RIPNG
949 && ((rinfo
->sub_type
== RIPNG_ROUTE_STATIC
) ||
950 (rinfo
->sub_type
== RIPNG_ROUTE_DEFAULT
)) ) {
951 if (type
!= ZEBRA_ROUTE_RIPNG
|| ((sub_type
!= RIPNG_ROUTE_STATIC
) &&
952 (sub_type
!= RIPNG_ROUTE_DEFAULT
))) {
953 route_unlock_node (rp
);
958 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
959 RIPNG_TIMER_OFF (rinfo
->t_garbage_collect
);
961 /* Tells the other daemons about the deletion of
964 if (ripng_route_rte (rinfo
))
965 ripng_zebra_ipv6_delete ((struct prefix_ipv6
*)&rp
->p
, &rinfo
->nexthop
,
969 ripng_info_free (rinfo
);
971 route_unlock_node (rp
);
975 rinfo
= ripng_info_new ();
978 rinfo
->sub_type
= sub_type
;
979 rinfo
->ifindex
= ifindex
;
983 if (nexthop
&& IN6_IS_ADDR_LINKLOCAL(nexthop
))
984 rinfo
->nexthop
= *nexthop
;
986 rinfo
->flags
|= RIPNG_RTF_FIB
;
989 /* Aggregate check. */
990 ripng_aggregate_increment (rp
, rinfo
);
992 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
994 if (IS_RIPNG_DEBUG_EVENT
) {
996 zlog_debug ("Redistribute new prefix %s/%d on the interface %s",
997 inet6_ntoa(p
->prefix
), p
->prefixlen
,
998 ifindex2ifname(ifindex
));
1000 zlog_debug ("Redistribute new prefix %s/%d with nexthop %s on the interface %s",
1001 inet6_ntoa(p
->prefix
), p
->prefixlen
, inet6_ntoa(*nexthop
),
1002 ifindex2ifname(ifindex
));
1005 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
1008 /* Delete redistributed route to RIPng table. */
1010 ripng_redistribute_delete (int type
, int sub_type
, struct prefix_ipv6
*p
,
1011 unsigned int ifindex
)
1013 struct route_node
*rp
;
1014 struct ripng_info
*rinfo
;
1016 if (IN6_IS_ADDR_LINKLOCAL (&p
->prefix
))
1018 if (IN6_IS_ADDR_LOOPBACK (&p
->prefix
))
1020 #if defined (MUSICA) || defined (LINUX)
1021 /* XXX As long as the RIPng redistribution is applied to all the connected
1022 * routes, one needs to filter the ::/96 prefixes.
1023 * However it could be a wanted case, it will be removed soon.
1025 if ((IN6_IS_ADDR_V4COMPAT(&p
->prefix
)) ||
1026 (IN6_IS_ADDR_UNSPECIFIED (&p
->prefix
) && (p
->prefixlen
== 96)))
1028 #endif /* MUSICA or LINUX */
1030 rp
= route_node_lookup (ripng
->table
, (struct prefix
*) p
);
1037 && rinfo
->type
== type
1038 && rinfo
->sub_type
== sub_type
1039 && rinfo
->ifindex
== ifindex
)
1041 /* Perform poisoned reverse. */
1042 rinfo
->metric
= RIPNG_METRIC_INFINITY
;
1043 RIPNG_TIMER_ON (rinfo
->t_garbage_collect
,
1044 ripng_garbage_collect
, ripng
->garbage_time
);
1045 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
1047 /* Aggregate count decrement. */
1048 ripng_aggregate_decrement (rp
, rinfo
);
1050 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
1052 if (IS_RIPNG_DEBUG_EVENT
)
1053 zlog_debug ("Poisone %s/%d on the interface %s with an infinity metric [delete]",
1054 inet6_ntoa(p
->prefix
), p
->prefixlen
,
1055 ifindex2ifname(ifindex
));
1057 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
1062 /* Withdraw redistributed route. */
1064 ripng_redistribute_withdraw (int type
)
1066 struct route_node
*rp
;
1067 struct ripng_info
*rinfo
;
1072 for (rp
= route_top (ripng
->table
); rp
; rp
= route_next (rp
))
1073 if ((rinfo
= rp
->info
) != NULL
)
1075 if ((rinfo
->type
== type
)
1076 && (rinfo
->sub_type
!= RIPNG_ROUTE_INTERFACE
))
1078 /* Perform poisoned reverse. */
1079 rinfo
->metric
= RIPNG_METRIC_INFINITY
;
1080 RIPNG_TIMER_ON (rinfo
->t_garbage_collect
,
1081 ripng_garbage_collect
, ripng
->garbage_time
);
1082 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
1084 /* Aggregate count decrement. */
1085 ripng_aggregate_decrement (rp
, rinfo
);
1087 rinfo
->flags
|= RIPNG_RTF_CHANGED
;
1089 if (IS_RIPNG_DEBUG_EVENT
) {
1090 struct prefix_ipv6
*p
= (struct prefix_ipv6
*) &rp
->p
;
1092 zlog_debug ("Poisone %s/%d on the interface %s [withdraw]",
1093 inet6_ntoa(p
->prefix
), p
->prefixlen
,
1094 ifindex2ifname(rinfo
->ifindex
));
1097 ripng_event (RIPNG_TRIGGERED_UPDATE
, 0);
1102 /* RIP routing information. */
1104 ripng_response_process (struct ripng_packet
*packet
, int size
,
1105 struct sockaddr_in6
*from
, struct interface
*ifp
,
1110 struct ripng_nexthop nexthop
;
1112 /* RFC2080 2.4.2 Response Messages:
1113 The Response must be ignored if it is not from the RIPng port. */
1114 if (ntohs (from
->sin6_port
) != RIPNG_PORT_DEFAULT
)
1116 zlog_warn ("RIPng packet comes from non RIPng port %d from %s",
1117 ntohs (from
->sin6_port
), inet6_ntoa (from
->sin6_addr
));
1118 ripng_peer_bad_packet (from
);
1122 /* The datagram's IPv6 source address should be checked to see
1123 whether the datagram is from a valid neighbor; the source of the
1124 datagram must be a link-local address. */
1125 if (! IN6_IS_ADDR_LINKLOCAL(&from
->sin6_addr
))
1127 zlog_warn ("RIPng packet comes from non link local address %s",
1128 inet6_ntoa (from
->sin6_addr
));
1129 ripng_peer_bad_packet (from
);
1133 /* It is also worth checking to see whether the response is from one
1134 of the router's own addresses. Interfaces on broadcast networks
1135 may receive copies of their own multicasts immediately. If a
1136 router processes its own output as new input, confusion is likely,
1137 and such datagrams must be ignored. */
1138 if (ripng_lladdr_check (ifp
, &from
->sin6_addr
))
1140 zlog_warn ("RIPng packet comes from my own link local address %s",
1141 inet6_ntoa (from
->sin6_addr
));
1142 ripng_peer_bad_packet (from
);
1146 /* As an additional check, periodic advertisements must have their
1147 hop counts set to 255, and inbound, multicast packets sent from the
1148 RIPng port (i.e. periodic advertisement or triggered update
1149 packets) must be examined to ensure that the hop count is 255. */
1150 if (hoplimit
>= 0 && hoplimit
!= 255)
1152 zlog_warn ("RIPng packet comes with non 255 hop count %d from %s",
1153 hoplimit
, inet6_ntoa (from
->sin6_addr
));
1154 ripng_peer_bad_packet (from
);
1158 /* Update RIPng peer. */
1159 ripng_peer_update (from
, packet
->version
);
1161 /* Reset nexthop. */
1162 memset (&nexthop
, 0, sizeof (struct ripng_nexthop
));
1163 nexthop
.flag
= RIPNG_NEXTHOP_UNSPEC
;
1165 /* Set RTE pointer. */
1168 for (lim
= ((caddr_t
) packet
) + size
; (caddr_t
) rte
< lim
; rte
++)
1170 /* First of all, we have to check this RTE is next hop RTE or
1171 not. Next hop RTE is completely different with normal RTE so
1172 we need special treatment. */
1173 if (rte
->metric
== RIPNG_METRIC_NEXTHOP
)
1175 ripng_nexthop_rte (rte
, from
, &nexthop
);
1179 /* RTE information validation. */
1181 /* - is the destination prefix valid (e.g., not a multicast
1182 prefix and not a link-local address) A link-local address
1183 should never be present in an RTE. */
1184 if (IN6_IS_ADDR_MULTICAST (&rte
->addr
))
1186 zlog_warn ("Destination prefix is a multicast address %s/%d [%d]",
1187 inet6_ntoa (rte
->addr
), rte
->prefixlen
, rte
->metric
);
1188 ripng_peer_bad_route (from
);
1191 if (IN6_IS_ADDR_LINKLOCAL (&rte
->addr
))
1193 zlog_warn ("Destination prefix is a link-local address %s/%d [%d]",
1194 inet6_ntoa (rte
->addr
), rte
->prefixlen
, rte
->metric
);
1195 ripng_peer_bad_route (from
);
1198 if (IN6_IS_ADDR_LOOPBACK (&rte
->addr
))
1200 zlog_warn ("Destination prefix is a loopback address %s/%d [%d]",
1201 inet6_ntoa (rte
->addr
), rte
->prefixlen
, rte
->metric
);
1202 ripng_peer_bad_route (from
);
1206 /* - is the prefix length valid (i.e., between 0 and 128,
1208 if (rte
->prefixlen
> 128)
1210 zlog_warn ("Invalid prefix length %s/%d from %s%%%s",
1211 inet6_ntoa (rte
->addr
), rte
->prefixlen
,
1212 inet6_ntoa (from
->sin6_addr
), ifp
->name
);
1213 ripng_peer_bad_route (from
);
1217 /* - is the metric valid (i.e., between 1 and 16, inclusive) */
1218 if (! (rte
->metric
>= 1 && rte
->metric
<= 16))
1220 zlog_warn ("Invalid metric %d from %s%%%s", rte
->metric
,
1221 inet6_ntoa (from
->sin6_addr
), ifp
->name
);
1222 ripng_peer_bad_route (from
);
1226 /* Vincent: XXX Should we compute the direclty reachable nexthop
1227 * for our RIPng network ?
1230 /* Routing table updates. */
1231 ripng_route_process (rte
, from
, &nexthop
, ifp
);
1235 /* Response to request message. */
1237 ripng_request_process (struct ripng_packet
*packet
,int size
,
1238 struct sockaddr_in6
*from
, struct interface
*ifp
)
1242 struct prefix_ipv6 p
;
1243 struct route_node
*rp
;
1244 struct ripng_info
*rinfo
;
1245 struct ripng_interface
*ri
;
1247 /* Does not reponse to the requests on the loopback interfaces */
1248 if (if_is_loopback (ifp
))
1251 /* Check RIPng process is enabled on this interface. */
1256 /* When passive interface is specified, suppress responses */
1260 /* RIPng peer update. */
1261 ripng_peer_update (from
, packet
->version
);
1263 lim
= ((caddr_t
) packet
) + size
;
1266 /* The Request is processed entry by entry. If there are no
1267 entries, no response is given. */
1268 if (lim
== (caddr_t
) rte
)
1271 /* There is one special case. If there is exactly one entry in the
1272 request, and it has a destination prefix of zero, a prefix length
1273 of zero, and a metric of infinity (i.e., 16), then this is a
1274 request to send the entire routing table. In that case, a call
1275 is made to the output process to send the routing table to the
1276 requesting address/port. */
1277 if (lim
== ((caddr_t
) (rte
+ 1)) &&
1278 IN6_IS_ADDR_UNSPECIFIED (&rte
->addr
) &&
1279 rte
->prefixlen
== 0 &&
1280 rte
->metric
== RIPNG_METRIC_INFINITY
)
1282 /* All route with split horizon */
1283 ripng_output_process (ifp
, from
, ripng_all_route
);
1287 /* Except for this special case, processing is quite simple.
1288 Examine the list of RTEs in the Request one by one. For each
1289 entry, look up the destination in the router's routing
1290 database and, if there is a route, put that route's metric in
1291 the metric field of the RTE. If there is no explicit route
1292 to the specified destination, put infinity in the metric
1293 field. Once all the entries have been filled in, change the
1294 command from Request to Response and send the datagram back
1295 to the requestor. */
1296 memset (&p
, 0, sizeof (struct prefix_ipv6
));
1297 p
.family
= AF_INET6
;
1299 for (; ((caddr_t
) rte
) < lim
; rte
++)
1301 p
.prefix
= rte
->addr
;
1302 p
.prefixlen
= rte
->prefixlen
;
1303 apply_mask_ipv6 (&p
);
1305 rp
= route_node_lookup (ripng
->table
, (struct prefix
*) &p
);
1310 rte
->metric
= rinfo
->metric
;
1311 route_unlock_node (rp
);
1314 rte
->metric
= RIPNG_METRIC_INFINITY
;
1316 packet
->command
= RIPNG_RESPONSE
;
1318 ripng_send_packet ((caddr_t
) packet
, size
, from
, ifp
);
1322 /* First entry point of reading RIPng packet. */
1324 ripng_read (struct thread
*thread
)
1328 struct sockaddr_in6 from
;
1329 struct ripng_packet
*packet
;
1330 unsigned int ifindex
;
1331 struct interface
*ifp
;
1334 /* Check ripng is active and alive. */
1335 assert (ripng
!= NULL
);
1336 assert (ripng
->sock
>= 0);
1338 /* Fetch thread data and set read pointer to empty for event
1339 managing. `sock' sould be same as ripng->sock. */
1340 sock
= THREAD_FD (thread
);
1341 ripng
->t_read
= NULL
;
1343 /* Add myself to the next event. */
1344 ripng_event (RIPNG_READ
, sock
);
1346 /* Read RIPng packet. */
1347 len
= ripng_recv_packet (sock
, STREAM_DATA (ripng
->ibuf
),
1348 STREAM_SIZE (ripng
->ibuf
), &from
, &ifindex
,
1352 zlog_warn ("RIPng recvfrom failed: %s.", safe_strerror (errno
));
1356 /* Check RTE boundary. RTE size (Packet length - RIPng header size
1357 (4)) must be multiple size of one RTE size (20). */
1358 if (((len
- 4) % 20) != 0)
1360 zlog_warn ("RIPng invalid packet size %d from %s", len
,
1361 inet6_ntoa (from
.sin6_addr
));
1362 ripng_peer_bad_packet (&from
);
1366 packet
= (struct ripng_packet
*) STREAM_DATA (ripng
->ibuf
);
1367 ifp
= if_lookup_by_index (ifindex
);
1369 /* RIPng packet received. */
1370 if (IS_RIPNG_DEBUG_EVENT
)
1371 zlog_debug ("RIPng packet received from %s port %d on %s",
1372 inet6_ntoa (from
.sin6_addr
), ntohs (from
.sin6_port
),
1373 ifp
? ifp
->name
: "unknown");
1375 /* Logging before packet checking. */
1376 if (IS_RIPNG_DEBUG_RECV
)
1377 ripng_packet_dump (packet
, len
, "RECV");
1379 /* Packet comes from unknown interface. */
1382 zlog_warn ("RIPng packet comes from unknown interface %d", ifindex
);
1386 /* Packet version mismatch checking. */
1387 if (packet
->version
!= ripng
->version
)
1389 zlog_warn ("RIPng packet version %d doesn't fit to my version %d",
1390 packet
->version
, ripng
->version
);
1391 ripng_peer_bad_packet (&from
);
1395 /* Process RIPng packet. */
1396 switch (packet
->command
)
1399 ripng_request_process (packet
, len
, &from
, ifp
);
1401 case RIPNG_RESPONSE
:
1402 ripng_response_process (packet
, len
, &from
, ifp
, hoplimit
);
1405 zlog_warn ("Invalid RIPng command %d", packet
->command
);
1406 ripng_peer_bad_packet (&from
);
1412 /* Walk down the RIPng routing table then clear changed flag. */
1414 ripng_clear_changed_flag ()
1416 struct route_node
*rp
;
1417 struct ripng_info
*rinfo
;
1419 for (rp
= route_top (ripng
->table
); rp
; rp
= route_next (rp
))
1420 if ((rinfo
= rp
->info
) != NULL
)
1421 if (rinfo
->flags
& RIPNG_RTF_CHANGED
)
1422 rinfo
->flags
&= ~RIPNG_RTF_CHANGED
;
1425 /* Regular update of RIPng route. Send all routing formation to RIPng
1426 enabled interface. */
1428 ripng_update (struct thread
*t
)
1430 struct listnode
*node
;
1431 struct interface
*ifp
;
1432 struct ripng_interface
*ri
;
1434 /* Clear update timer thread. */
1435 ripng
->t_update
= NULL
;
1437 /* Logging update event. */
1438 if (IS_RIPNG_DEBUG_EVENT
)
1439 zlog_debug ("RIPng update timer expired!");
1441 /* Supply routes to each interface. */
1442 for (ALL_LIST_ELEMENTS_RO (iflist
, node
, ifp
))
1446 if (if_is_loopback (ifp
) || ! if_is_up (ifp
))
1452 /* When passive interface is specified, suppress announce to the
1458 if (ri
->ri_send
== RIPNG_SEND_OFF
)
1460 if (IS_RIPNG_DEBUG_EVENT
)
1461 zlog (NULL
, LOG_DEBUG
,
1462 "[Event] RIPng send to if %d is suppressed by config",
1466 #endif /* RIPNG_ADVANCED */
1468 ripng_output_process (ifp
, NULL
, ripng_all_route
);
1471 /* Triggered updates may be suppressed if a regular update is due by
1472 the time the triggered update would be sent. */
1473 if (ripng
->t_triggered_interval
)
1475 thread_cancel (ripng
->t_triggered_interval
);
1476 ripng
->t_triggered_interval
= NULL
;
1480 /* Reset flush event. */
1481 ripng_event (RIPNG_UPDATE_EVENT
, 0);
1486 /* Triggered update interval timer. */
1488 ripng_triggered_interval (struct thread
*t
)
1490 ripng
->t_triggered_interval
= NULL
;
1495 ripng_triggered_update (t
);
1500 /* Execute triggered update. */
1502 ripng_triggered_update (struct thread
*t
)
1504 struct listnode
*node
;
1505 struct interface
*ifp
;
1506 struct ripng_interface
*ri
;
1509 ripng
->t_triggered_update
= NULL
;
1511 /* Cancel interval timer. */
1512 if (ripng
->t_triggered_interval
)
1514 thread_cancel (ripng
->t_triggered_interval
);
1515 ripng
->t_triggered_interval
= NULL
;
1519 /* Logging triggered update. */
1520 if (IS_RIPNG_DEBUG_EVENT
)
1521 zlog_debug ("RIPng triggered update!");
1523 /* Split Horizon processing is done when generating triggered
1524 updates as well as normal updates (see section 2.6). */
1525 for (ALL_LIST_ELEMENTS_RO (iflist
, node
, ifp
))
1529 if (if_is_loopback (ifp
) || ! if_is_up (ifp
))
1535 /* When passive interface is specified, suppress announce to the
1540 ripng_output_process (ifp
, NULL
, ripng_changed_route
);
1543 /* Once all of the triggered updates have been generated, the route
1544 change flags should be cleared. */
1545 ripng_clear_changed_flag ();
1547 /* After a triggered update is sent, a timer should be set for a
1548 random interval between 1 and 5 seconds. If other changes that
1549 would trigger updates occur before the timer expires, a single
1550 update is triggered when the timer expires. */
1551 interval
= (random () % 5) + 1;
1553 ripng
->t_triggered_interval
=
1554 thread_add_timer (master
, ripng_triggered_interval
, NULL
, interval
);
1559 /* Write routing table entry to the stream and return next index of
1560 the routing table entry in the stream. */
1562 ripng_write_rte (int num
, struct stream
*s
, struct prefix_ipv6
*p
,
1563 struct in6_addr
*nexthop
, u_int16_t tag
, u_char metric
)
1565 /* RIPng packet header. */
1568 stream_putc (s
, RIPNG_RESPONSE
);
1569 stream_putc (s
, RIPNG_V1
);
1573 /* Write routing table entry. */
1575 stream_write (s
, (u_char
*) &p
->prefix
, sizeof (struct in6_addr
));
1577 stream_write (s
, (u_char
*) nexthop
, sizeof (struct in6_addr
));
1578 stream_putw (s
, tag
);
1580 stream_putc (s
, p
->prefixlen
);
1583 stream_putc (s
, metric
);
1588 /* Send RESPONSE message to specified destination. */
1590 ripng_output_process (struct interface
*ifp
, struct sockaddr_in6
*to
,
1594 struct route_node
*rp
;
1595 struct ripng_info
*rinfo
;
1596 struct ripng_interface
*ri
;
1597 struct ripng_aggregate
*aggregate
;
1598 struct prefix_ipv6
*p
;
1599 struct list
* ripng_rte_list
;
1601 if (IS_RIPNG_DEBUG_EVENT
) {
1603 zlog_debug ("RIPng update routes to neighbor %s",
1604 inet6_ntoa(to
->sin6_addr
));
1606 zlog_debug ("RIPng update routes on interface %s", ifp
->name
);
1609 /* Get RIPng interface. */
1612 ripng_rte_list
= ripng_rte_new();
1614 for (rp
= route_top (ripng
->table
); rp
; rp
= route_next (rp
))
1616 if ((rinfo
= rp
->info
) != NULL
&& rinfo
->suppress
== 0)
1618 /* If no route-map are applied, the RTE will be these following
1621 p
= (struct prefix_ipv6
*) &rp
->p
;
1622 rinfo
->metric_out
= rinfo
->metric
;
1623 rinfo
->tag_out
= rinfo
->tag
;
1624 memset(&rinfo
->nexthop_out
, 0, sizeof(rinfo
->nexthop_out
));
1625 /* In order to avoid some local loops,
1626 * if the RIPng route has a nexthop via this interface, keep the nexthop,
1627 * otherwise set it to 0. The nexthop should not be propagated
1628 * beyond the local broadcast/multicast area in order
1629 * to avoid an IGP multi-level recursive look-up.
1631 if (rinfo
->ifindex
== ifp
->ifindex
)
1632 rinfo
->nexthop_out
= rinfo
->nexthop
;
1634 /* Apply output filters. */
1635 ret
= ripng_outgoing_filter (p
, ri
);
1639 /* Changed route only output. */
1640 if (route_type
== ripng_changed_route
&&
1641 (! (rinfo
->flags
& RIPNG_RTF_CHANGED
)))
1644 /* Split horizon. */
1645 if (ri
->split_horizon
== RIPNG_SPLIT_HORIZON
)
1647 /* We perform split horizon for RIPng routes. */
1648 if ((rinfo
->type
== ZEBRA_ROUTE_RIPNG
) &&
1649 rinfo
->ifindex
== ifp
->ifindex
)
1653 /* Preparation for route-map. */
1654 rinfo
->metric_set
= 0;
1657 * and tag_out are already initialized.
1660 /* Interface route-map */
1661 if (ri
->routemap
[RIPNG_FILTER_OUT
])
1665 ret
= route_map_apply (ri
->routemap
[RIPNG_FILTER_OUT
],
1666 (struct prefix
*) p
, RMAP_RIPNG
,
1669 if (ret
== RMAP_DENYMATCH
)
1671 if (IS_RIPNG_DEBUG_PACKET
)
1672 zlog_debug ("RIPng %s/%d is filtered by route-map out",
1673 inet6_ntoa (p
->prefix
), p
->prefixlen
);
1679 /* Redistribute route-map. */
1680 if (ripng
->route_map
[rinfo
->type
].name
)
1684 ret
= route_map_apply (ripng
->route_map
[rinfo
->type
].map
,
1685 (struct prefix
*) p
, RMAP_RIPNG
,
1688 if (ret
== RMAP_DENYMATCH
)
1690 if (IS_RIPNG_DEBUG_PACKET
)
1691 zlog_debug ("RIPng %s/%d is filtered by route-map",
1692 inet6_ntoa (p
->prefix
), p
->prefixlen
);
1697 /* When the route-map does not set metric. */
1698 if (! rinfo
->metric_set
)
1700 /* If the redistribute metric is set. */
1701 if (ripng
->route_map
[rinfo
->type
].metric_config
1702 && rinfo
->metric
!= RIPNG_METRIC_INFINITY
)
1704 rinfo
->metric_out
= ripng
->route_map
[rinfo
->type
].metric
;
1708 /* If the route is not connected or localy generated
1709 one, use default-metric value */
1710 if (rinfo
->type
!= ZEBRA_ROUTE_RIPNG
1711 && rinfo
->type
!= ZEBRA_ROUTE_CONNECT
1712 && rinfo
->metric
!= RIPNG_METRIC_INFINITY
)
1713 rinfo
->metric_out
= ripng
->default_metric
;
1717 /* Apply offset-list */
1718 if (rinfo
->metric_out
!= RIPNG_METRIC_INFINITY
)
1719 ripng_offset_list_apply_out (p
, ifp
, &rinfo
->metric_out
);
1721 if (rinfo
->metric_out
> RIPNG_METRIC_INFINITY
)
1722 rinfo
->metric_out
= RIPNG_METRIC_INFINITY
;
1724 /* Perform split-horizon with poisoned reverse
1727 if (ri
->split_horizon
== RIPNG_SPLIT_HORIZON_POISONED_REVERSE
) {
1728 if ((rinfo
->type
== ZEBRA_ROUTE_RIPNG
) &&
1729 rinfo
->ifindex
== ifp
->ifindex
)
1730 rinfo
->metric_out
= RIPNG_METRIC_INFINITY
;
1733 /* Add RTE to the list */
1734 ripng_rte_add(ripng_rte_list
, p
, rinfo
, NULL
);
1737 /* Process the aggregated RTE entry */
1738 if ((aggregate
= rp
->aggregate
) != NULL
&&
1739 aggregate
->count
> 0 &&
1740 aggregate
->suppress
== 0)
1742 /* If no route-map are applied, the RTE will be these following
1745 p
= (struct prefix_ipv6
*) &rp
->p
;
1746 aggregate
->metric_set
= 0;
1747 aggregate
->metric_out
= aggregate
->metric
;
1748 aggregate
->tag_out
= aggregate
->tag
;
1749 memset(&aggregate
->nexthop_out
, 0, sizeof(aggregate
->nexthop_out
));
1751 /* Apply output filters.*/
1752 ret
= ripng_outgoing_filter (p
, ri
);
1756 /* Interface route-map */
1757 if (ri
->routemap
[RIPNG_FILTER_OUT
])
1760 struct ripng_info newinfo
;
1762 /* let's cast the aggregate structure to ripng_info */
1763 memset (&newinfo
, 0, sizeof (struct ripng_info
));
1764 /* the nexthop is :: */
1765 newinfo
.metric
= aggregate
->metric
;
1766 newinfo
.metric_out
= aggregate
->metric_out
;
1767 newinfo
.tag
= aggregate
->tag
;
1768 newinfo
.tag_out
= aggregate
->tag_out
;
1770 ret
= route_map_apply (ri
->routemap
[RIPNG_FILTER_OUT
],
1771 (struct prefix
*) p
, RMAP_RIPNG
,
1774 if (ret
== RMAP_DENYMATCH
)
1776 if (IS_RIPNG_DEBUG_PACKET
)
1777 zlog_debug ("RIPng %s/%d is filtered by route-map out",
1778 inet6_ntoa (p
->prefix
), p
->prefixlen
);
1782 aggregate
->metric_out
= newinfo
.metric_out
;
1783 aggregate
->tag_out
= newinfo
.tag_out
;
1784 if (IN6_IS_ADDR_LINKLOCAL(&newinfo
.nexthop_out
))
1785 aggregate
->nexthop_out
= newinfo
.nexthop_out
;
1788 /* There is no redistribute routemap for the aggregated RTE */
1790 /* Changed route only output. */
1791 /* XXX, vincent, in order to increase time convergence,
1792 * it should be announced if a child has changed.
1794 if (route_type
== ripng_changed_route
)
1797 /* Apply offset-list */
1798 if (aggregate
->metric_out
!= RIPNG_METRIC_INFINITY
)
1799 ripng_offset_list_apply_out (p
, ifp
, &aggregate
->metric_out
);
1801 if (aggregate
->metric_out
> RIPNG_METRIC_INFINITY
)
1802 aggregate
->metric_out
= RIPNG_METRIC_INFINITY
;
1804 /* Add RTE to the list */
1805 ripng_rte_add(ripng_rte_list
, p
, NULL
, aggregate
);
1810 /* Flush the list */
1811 ripng_rte_send(ripng_rte_list
, ifp
, to
);
1812 ripng_rte_free(ripng_rte_list
);
1815 /* Create new RIPng instance and set it to global variable. */
1819 /* ripng should be NULL. */
1820 assert (ripng
== NULL
);
1822 /* Allocaste RIPng instance. */
1823 ripng
= XMALLOC (MTYPE_RIPNG
, sizeof (struct ripng
));
1824 memset (ripng
, 0, sizeof (struct ripng
));
1826 /* Default version and timer values. */
1827 ripng
->version
= RIPNG_V1
;
1828 ripng
->update_time
= RIPNG_UPDATE_TIMER_DEFAULT
;
1829 ripng
->timeout_time
= RIPNG_TIMEOUT_TIMER_DEFAULT
;
1830 ripng
->garbage_time
= RIPNG_GARBAGE_TIMER_DEFAULT
;
1831 ripng
->default_metric
= RIPNG_DEFAULT_METRIC_DEFAULT
;
1834 ripng
->ibuf
= stream_new (RIPNG_MAX_PACKET_SIZE
* 5);
1835 ripng
->obuf
= stream_new (RIPNG_MAX_PACKET_SIZE
);
1837 /* Initialize RIPng routig table. */
1838 ripng
->table
= route_table_init ();
1839 ripng
->route
= route_table_init ();
1840 ripng
->aggregate
= route_table_init ();
1843 ripng
->sock
= ripng_make_socket ();
1844 if (ripng
->sock
< 0)
1848 ripng_event (RIPNG_READ
, ripng
->sock
);
1849 ripng_event (RIPNG_UPDATE_EVENT
, 1);
1854 /* Send RIPng request to the interface. */
1856 ripng_request (struct interface
*ifp
)
1859 struct ripng_packet ripng_packet
;
1861 /* In default ripd doesn't send RIP_REQUEST to the loopback interface. */
1862 if (if_is_loopback(ifp
))
1865 /* If interface is down, don't send RIP packet. */
1866 if (! if_is_up (ifp
))
1869 if (IS_RIPNG_DEBUG_EVENT
)
1870 zlog_debug ("RIPng send request to %s", ifp
->name
);
1872 memset (&ripng_packet
, 0, sizeof (ripng_packet
));
1873 ripng_packet
.command
= RIPNG_REQUEST
;
1874 ripng_packet
.version
= RIPNG_V1
;
1875 rte
= ripng_packet
.rte
;
1876 rte
->metric
= RIPNG_METRIC_INFINITY
;
1878 return ripng_send_packet ((caddr_t
) &ripng_packet
, sizeof (ripng_packet
),
1884 ripng_update_jitter (int time
)
1886 return ((rand () % (time
+ 1)) - (time
/ 2));
1890 ripng_event (enum ripng_event event
, int sock
)
1898 ripng
->t_read
= thread_add_read (master
, ripng_read
, NULL
, sock
);
1900 case RIPNG_UPDATE_EVENT
:
1901 if (ripng
->t_update
)
1903 thread_cancel (ripng
->t_update
);
1904 ripng
->t_update
= NULL
;
1906 /* Update timer jitter. */
1907 jitter
= ripng_update_jitter (ripng
->update_time
);
1910 thread_add_timer (master
, ripng_update
, NULL
,
1911 sock
? 2 : ripng
->update_time
+ jitter
);
1913 case RIPNG_TRIGGERED_UPDATE
:
1914 if (ripng
->t_triggered_interval
)
1916 else if (! ripng
->t_triggered_update
)
1917 ripng
->t_triggered_update
=
1918 thread_add_event (master
, ripng_triggered_update
, NULL
, 0);
1926 /* Print out routes update time. */
1928 ripng_vty_out_uptime (struct vty
*vty
, struct ripng_info
*rinfo
)
1930 struct timeval timer_now
;
1934 char timebuf
[TIME_BUF
];
1935 struct thread
*thread
;
1937 gettimeofday (&timer_now
, NULL
);
1939 if ((thread
= rinfo
->t_timeout
) != NULL
)
1941 clock
= thread
->u
.sands
.tv_sec
- timer_now
.tv_sec
;
1942 tm
= gmtime (&clock
);
1943 strftime (timebuf
, TIME_BUF
, "%M:%S", tm
);
1944 vty_out (vty
, "%5s", timebuf
);
1946 else if ((thread
= rinfo
->t_garbage_collect
) != NULL
)
1948 clock
= thread
->u
.sands
.tv_sec
- timer_now
.tv_sec
;
1949 tm
= gmtime (&clock
);
1950 strftime (timebuf
, TIME_BUF
, "%M:%S", tm
);
1951 vty_out (vty
, "%5s", timebuf
);
1956 ripng_route_subtype_print (struct ripng_info
*rinfo
)
1961 if (rinfo
->suppress
)
1964 switch (rinfo
->sub_type
)
1966 case RIPNG_ROUTE_RTE
:
1969 case RIPNG_ROUTE_STATIC
:
1972 case RIPNG_ROUTE_DEFAULT
:
1975 case RIPNG_ROUTE_REDISTRIBUTE
:
1978 case RIPNG_ROUTE_INTERFACE
:
1989 DEFUN (show_ipv6_ripng
,
1990 show_ipv6_ripng_cmd
,
1994 "Show RIPng routes\n")
1996 struct route_node
*rp
;
1997 struct ripng_info
*rinfo
;
1998 struct ripng_aggregate
*aggregate
;
1999 struct prefix_ipv6
*p
;
2005 /* Header of display. */
2006 vty_out (vty
, "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP%s"
2008 " (n) - normal, (s) - static, (d) - default, (r) - redistribute,%s"
2009 " (i) - interface, (a/S) - aggregated/Suppressed%s%s"
2010 " Network Next Hop Via Metric Tag Time%s",
2011 VTY_NEWLINE
, VTY_NEWLINE
, VTY_NEWLINE
,
2012 VTY_NEWLINE
, VTY_NEWLINE
, VTY_NEWLINE
);
2014 for (rp
= route_top (ripng
->table
); rp
; rp
= route_next (rp
))
2016 if ((aggregate
= rp
->aggregate
) != NULL
)
2018 p
= (struct prefix_ipv6
*) &rp
->p
;
2021 len
= vty_out (vty
, "R(a) %d/%d %s/%d ",
2022 aggregate
->count
, aggregate
->suppress
,
2023 inet6_ntoa (p
->prefix
), p
->prefixlen
);
2025 len
= vty_out (vty
, "R(a) %s/%d ",
2026 inet6_ntoa (p
->prefix
), p
->prefixlen
);
2028 vty_out (vty
, "%s", VTY_NEWLINE
);
2029 vty_out (vty
, "%*s", 18, " ");
2031 vty_out (vty
, "%*s", 28, " ");
2032 vty_out (vty
, "self %2d %3d%s", aggregate
->metric
,
2037 if ((rinfo
= rp
->info
) != NULL
)
2039 p
= (struct prefix_ipv6
*) &rp
->p
;
2042 len
= vty_out (vty
, "%c(%s) 0/%d %s/%d ",
2043 zebra_route_char(rinfo
->type
),
2044 ripng_route_subtype_print(rinfo
),
2046 inet6_ntoa (p
->prefix
), p
->prefixlen
);
2048 len
= vty_out (vty
, "%c(%s) %s/%d ",
2049 zebra_route_char(rinfo
->type
),
2050 ripng_route_subtype_print(rinfo
),
2051 inet6_ntoa (p
->prefix
), p
->prefixlen
);
2053 vty_out (vty
, "%s", VTY_NEWLINE
);
2054 vty_out (vty
, "%*s", 18, " ");
2055 len
= vty_out (vty
, "%s", inet6_ntoa (rinfo
->nexthop
));
2059 len
= vty_out (vty
, "%*s", len
, " ");
2062 if ((rinfo
->type
== ZEBRA_ROUTE_RIPNG
) &&
2063 (rinfo
->sub_type
== RIPNG_ROUTE_RTE
))
2065 len
= vty_out (vty
, "%s", ifindex2ifname(rinfo
->ifindex
));
2066 } else if (rinfo
->metric
== RIPNG_METRIC_INFINITY
)
2068 len
= vty_out (vty
, "kill");
2070 len
= vty_out (vty
, "self");
2074 vty_out (vty
, "%*s", len
, " ");
2076 vty_out (vty
, " %2d %3d ",
2077 rinfo
->metric
, rinfo
->tag
);
2080 if ((rinfo
->type
== ZEBRA_ROUTE_RIPNG
) &&
2081 (rinfo
->sub_type
== RIPNG_ROUTE_RTE
))
2083 /* RTE from remote RIP routers */
2084 ripng_vty_out_uptime (vty
, rinfo
);
2085 } else if (rinfo
->metric
== RIPNG_METRIC_INFINITY
)
2087 /* poisonous reversed routes (gc) */
2088 ripng_vty_out_uptime (vty
, rinfo
);
2091 vty_out (vty
, "%s", VTY_NEWLINE
);
2098 /* Return next event time. */
2100 ripng_next_thread_timer (struct thread
*thread
)
2102 struct timeval timer_now
;
2104 gettimeofday (&timer_now
, NULL
);
2106 return thread
->u
.sands
.tv_sec
- timer_now
.tv_sec
;
2109 DEFUN (show_ipv6_ripng_status
,
2110 show_ipv6_ripng_status_cmd
,
2111 "show ipv6 ripng status",
2114 "Show RIPng routes\n"
2115 "IPv6 routing protocol process parameters and statistics\n")
2117 struct listnode
*node
;
2118 struct interface
*ifp
;
2119 int ripng_network_write (struct vty
*, int);
2120 void ripng_redistribute_write (struct vty
*, int);
2125 vty_out (vty
, "Routing Protocol is \"RIPng\"%s", VTY_NEWLINE
);
2126 vty_out (vty
, " Sending updates every %ld seconds with +/-50%%,",
2127 ripng
->update_time
);
2128 vty_out (vty
, " next due in %d seconds%s",
2129 ripng_next_thread_timer (ripng
->t_update
),
2131 vty_out (vty
, " Timeout after %ld seconds,", ripng
->timeout_time
);
2132 vty_out (vty
, " garbage collect after %ld seconds%s", ripng
->garbage_time
,
2135 /* Filtering status show. */
2136 config_show_distribute (vty
);
2138 /* Default metric information. */
2139 vty_out (vty
, " Default redistribution metric is %d%s",
2140 ripng
->default_metric
, VTY_NEWLINE
);
2142 /* Redistribute information. */
2143 vty_out (vty
, " Redistributing:");
2144 ripng_redistribute_write (vty
, 0);
2145 vty_out (vty
, "%s", VTY_NEWLINE
);
2147 vty_out (vty
, " Default version control: send version %d,", ripng
->version
);
2148 vty_out (vty
, " receive version %d %s", ripng
->version
,
2151 vty_out (vty
, " Interface Send Recv%s", VTY_NEWLINE
);
2153 for (ALL_LIST_ELEMENTS_RO (iflist
, node
, ifp
))
2155 struct ripng_interface
*ri
;
2159 if (ri
->enable_network
|| ri
->enable_interface
)
2162 vty_out (vty
, " %-17s%-3d %-3d%s", ifp
->name
,
2169 vty_out (vty
, " Routing for Networks:%s", VTY_NEWLINE
);
2170 ripng_network_write (vty
, 0);
2172 vty_out (vty
, " Routing Information Sources:%s", VTY_NEWLINE
);
2173 vty_out (vty
, " Gateway BadPackets BadRoutes Distance Last Update%s", VTY_NEWLINE
);
2174 ripng_peer_display (vty
);
2179 DEFUN (router_ripng
,
2182 "Enable a routing process\n"
2183 "Make RIPng instance command\n")
2187 vty
->node
= RIPNG_NODE
;
2191 ret
= ripng_create ();
2193 /* Notice to user we couldn't create RIPng. */
2196 zlog_warn ("can't create RIPng");
2204 DEFUN (no_router_ripng
,
2205 no_router_ripng_cmd
,
2208 "Enable a routing process\n"
2209 "Make RIPng instance command\n")
2219 "Static route setup\n"
2220 "Set static RIPng route announcement\n")
2223 struct prefix_ipv6 p
;
2224 struct route_node
*rp
;
2226 ret
= str2prefix_ipv6 (argv
[0], (struct prefix_ipv6
*)&p
);
2229 vty_out (vty
, "Malformed address%s", VTY_NEWLINE
);
2232 apply_mask_ipv6 (&p
);
2234 rp
= route_node_get (ripng
->route
, (struct prefix
*) &p
);
2237 vty_out (vty
, "There is already same static route.%s", VTY_NEWLINE
);
2238 route_unlock_node (rp
);
2241 rp
->info
= (void *)1;
2243 ripng_redistribute_add (ZEBRA_ROUTE_RIPNG
, RIPNG_ROUTE_STATIC
, &p
, 0, NULL
);
2248 DEFUN (no_ripng_route
,
2250 "no route IPV6ADDR",
2252 "Static route setup\n"
2253 "Delete static RIPng route announcement\n")
2256 struct prefix_ipv6 p
;
2257 struct route_node
*rp
;
2259 ret
= str2prefix_ipv6 (argv
[0], (struct prefix_ipv6
*)&p
);
2262 vty_out (vty
, "Malformed address%s", VTY_NEWLINE
);
2265 apply_mask_ipv6 (&p
);
2267 rp
= route_node_lookup (ripng
->route
, (struct prefix
*) &p
);
2270 vty_out (vty
, "Can't find static route.%s", VTY_NEWLINE
);
2274 ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG
, RIPNG_ROUTE_STATIC
, &p
, 0);
2275 route_unlock_node (rp
);
2278 route_unlock_node (rp
);
2283 DEFUN (ripng_aggregate_address
,
2284 ripng_aggregate_address_cmd
,
2285 "aggregate-address X:X::X:X/M",
2286 "Set aggregate RIPng route announcement\n"
2287 "Aggregate network\n")
2291 struct route_node
*node
;
2293 ret
= str2prefix_ipv6 (argv
[0], (struct prefix_ipv6
*)&p
);
2296 vty_out (vty
, "Malformed address%s", VTY_NEWLINE
);
2300 /* Check aggregate alredy exist or not. */
2301 node
= route_node_get (ripng
->aggregate
, &p
);
2304 vty_out (vty
, "There is already same aggregate route.%s", VTY_NEWLINE
);
2305 route_unlock_node (node
);
2308 node
->info
= (void *)1;
2310 ripng_aggregate_add (&p
);
2315 DEFUN (no_ripng_aggregate_address
,
2316 no_ripng_aggregate_address_cmd
,
2317 "no aggregate-address X:X::X:X/M",
2319 "Delete aggregate RIPng route announcement\n"
2320 "Aggregate network")
2324 struct route_node
*rn
;
2326 ret
= str2prefix_ipv6 (argv
[0], (struct prefix_ipv6
*) &p
);
2329 vty_out (vty
, "Malformed address%s", VTY_NEWLINE
);
2333 rn
= route_node_lookup (ripng
->aggregate
, &p
);
2336 vty_out (vty
, "Can't find aggregate route.%s", VTY_NEWLINE
);
2339 route_unlock_node (rn
);
2341 route_unlock_node (rn
);
2343 ripng_aggregate_delete (&p
);
2348 DEFUN (ripng_default_metric
,
2349 ripng_default_metric_cmd
,
2350 "default-metric <1-16>",
2351 "Set a metric of redistribute routes\n"
2356 ripng
->default_metric
= atoi (argv
[0]);
2361 DEFUN (no_ripng_default_metric
,
2362 no_ripng_default_metric_cmd
,
2363 "no default-metric",
2365 "Set a metric of redistribute routes\n"
2370 ripng
->default_metric
= RIPNG_DEFAULT_METRIC_DEFAULT
;
2375 ALIAS (no_ripng_default_metric
,
2376 no_ripng_default_metric_val_cmd
,
2377 "no default-metric <1-16>",
2379 "Set a metric of redistribute routes\n"
2383 /* RIPng update timer setup. */
2384 DEFUN (ripng_update_timer
,
2385 ripng_update_timer_cmd
,
2386 "update-timer SECOND",
2387 "Set RIPng update timer in seconds\n"
2390 unsigned long update
;
2391 char *endptr
= NULL
;
2393 update
= strtoul (argv
[0], &endptr
, 10);
2394 if (update
== ULONG_MAX
|| *endptr
!= '\0')
2396 vty_out (vty
, "update timer value error%s", VTY_NEWLINE
);
2400 ripng
->update_time
= update
;
2402 ripng_event (RIPNG_UPDATE_EVENT
, 0);
2406 DEFUN (no_ripng_update_timer
,
2407 no_ripng_update_timer_cmd
,
2408 "no update-timer SECOND",
2410 "Unset RIPng update timer in seconds\n"
2413 ripng
->update_time
= RIPNG_UPDATE_TIMER_DEFAULT
;
2414 ripng_event (RIPNG_UPDATE_EVENT
, 0);
2418 /* RIPng timeout timer setup. */
2419 DEFUN (ripng_timeout_timer
,
2420 ripng_timeout_timer_cmd
,
2421 "timeout-timer SECOND",
2422 "Set RIPng timeout timer in seconds\n"
2425 unsigned long timeout
;
2426 char *endptr
= NULL
;
2428 timeout
= strtoul (argv
[0], &endptr
, 10);
2429 if (timeout
== ULONG_MAX
|| *endptr
!= '\0')
2431 vty_out (vty
, "timeout timer value error%s", VTY_NEWLINE
);
2435 ripng
->timeout_time
= timeout
;
2440 DEFUN (no_ripng_timeout_timer
,
2441 no_ripng_timeout_timer_cmd
,
2442 "no timeout-timer SECOND",
2444 "Unset RIPng timeout timer in seconds\n"
2447 ripng
->timeout_time
= RIPNG_TIMEOUT_TIMER_DEFAULT
;
2451 /* RIPng garbage timer setup. */
2452 DEFUN (ripng_garbage_timer
,
2453 ripng_garbage_timer_cmd
,
2454 "garbage-timer SECOND",
2455 "Set RIPng garbage timer in seconds\n"
2458 unsigned long garbage
;
2459 char *endptr
= NULL
;
2461 garbage
= strtoul (argv
[0], &endptr
, 10);
2462 if (garbage
== ULONG_MAX
|| *endptr
!= '\0')
2464 vty_out (vty
, "garbage timer value error%s", VTY_NEWLINE
);
2468 ripng
->garbage_time
= garbage
;
2473 DEFUN (no_ripng_garbage_timer
,
2474 no_ripng_garbage_timer_cmd
,
2475 "no garbage-timer SECOND",
2477 "Unset RIPng garbage timer in seconds\n"
2480 ripng
->garbage_time
= RIPNG_GARBAGE_TIMER_DEFAULT
;
2485 DEFUN (ripng_timers
,
2487 "timers basic <0-65535> <0-65535> <0-65535>",
2488 "RIPng timers setup\n"
2490 "Routing table update timer value in second. Default is 30.\n"
2491 "Routing information timeout timer. Default is 180.\n"
2492 "Garbage collection timer. Default is 120.\n")
2494 unsigned long update
;
2495 unsigned long timeout
;
2496 unsigned long garbage
;
2497 char *endptr
= NULL
;
2499 update
= strtoul (argv
[0], &endptr
, 10);
2500 if (update
== ULONG_MAX
|| *endptr
!= '\0')
2502 vty_out (vty
, "update timer value error%s", VTY_NEWLINE
);
2506 timeout
= strtoul (argv
[1], &endptr
, 10);
2507 if (timeout
== ULONG_MAX
|| *endptr
!= '\0')
2509 vty_out (vty
, "timeout timer value error%s", VTY_NEWLINE
);
2513 garbage
= strtoul (argv
[2], &endptr
, 10);
2514 if (garbage
== ULONG_MAX
|| *endptr
!= '\0')
2516 vty_out (vty
, "garbage timer value error%s", VTY_NEWLINE
);
2520 /* Set each timer value. */
2521 ripng
->update_time
= update
;
2522 ripng
->timeout_time
= timeout
;
2523 ripng
->garbage_time
= garbage
;
2525 /* Reset update timer thread. */
2526 ripng_event (RIPNG_UPDATE_EVENT
, 0);
2531 DEFUN (no_ripng_timers
,
2532 no_ripng_timers_cmd
,
2535 "RIPng timers setup\n"
2538 /* Set each timer value to the default. */
2539 ripng
->update_time
= RIPNG_UPDATE_TIMER_DEFAULT
;
2540 ripng
->timeout_time
= RIPNG_TIMEOUT_TIMER_DEFAULT
;
2541 ripng
->garbage_time
= RIPNG_GARBAGE_TIMER_DEFAULT
;
2543 /* Reset update timer thread. */
2544 ripng_event (RIPNG_UPDATE_EVENT
, 0);
2549 ALIAS (no_ripng_timers
,
2550 no_ripng_timers_val_cmd
,
2551 "no timers basic <0-65535> <0-65535> <0-65535>",
2553 "RIPng timers setup\n"
2555 "Routing table update timer value in second. Default is 30.\n"
2556 "Routing information timeout timer. Default is 180.\n"
2557 "Garbage collection timer. Default is 120.\n")
2559 DEFUN (show_ipv6_protocols
, show_ipv6_protocols_cmd
,
2560 "show ipv6 protocols",
2563 "Routing protocol information")
2568 vty_out (vty
, "Routing Protocol is \"ripng\"%s", VTY_NEWLINE
);
2570 vty_out (vty
, "Sending updates every %ld seconds, next due in %d seconds%s",
2571 ripng
->update_time
, 0,
2574 vty_out (vty
, "Timerout after %ld seconds, garbage correct %ld%s",
2575 ripng
->timeout_time
,
2576 ripng
->garbage_time
,
2579 vty_out (vty
, "Outgoing update filter list for all interfaces is not set");
2580 vty_out (vty
, "Incoming update filter list for all interfaces is not set");
2585 /* Please be carefull to use this command. */
2586 DEFUN (ripng_default_information_originate
,
2587 ripng_default_information_originate_cmd
,
2588 "default-information originate",
2589 "Default route information\n"
2590 "Distribute default route\n")
2592 struct prefix_ipv6 p
;
2594 if (! ripng
->default_information
) {
2595 ripng
->default_information
= 1;
2597 str2prefix_ipv6 ("::/0", &p
);
2598 ripng_redistribute_add (ZEBRA_ROUTE_RIPNG
, RIPNG_ROUTE_DEFAULT
, &p
, 0, NULL
);
2604 DEFUN (no_ripng_default_information_originate
,
2605 no_ripng_default_information_originate_cmd
,
2606 "no default-information originate",
2608 "Default route information\n"
2609 "Distribute default route\n")
2611 struct prefix_ipv6 p
;
2613 if (ripng
->default_information
) {
2614 ripng
->default_information
= 0;
2616 str2prefix_ipv6 ("::/0", &p
);
2617 ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG
, RIPNG_ROUTE_DEFAULT
, &p
, 0);
2623 /* RIPng configuration write function. */
2625 ripng_config_write (struct vty
*vty
)
2627 int ripng_network_write (struct vty
*, int);
2628 void ripng_redistribute_write (struct vty
*, int);
2630 struct route_node
*rp
;
2636 vty_out (vty
, "router ripng%s", VTY_NEWLINE
);
2638 if (ripng
->default_information
)
2639 vty_out (vty
, " default-information originate%s", VTY_NEWLINE
);
2641 ripng_network_write (vty
, 1);
2643 /* RIPng default metric configuration */
2644 if (ripng
->default_metric
!= RIPNG_DEFAULT_METRIC_DEFAULT
)
2645 vty_out (vty
, " default-metric %d%s",
2646 ripng
->default_metric
, VTY_NEWLINE
);
2648 ripng_redistribute_write (vty
, 1);
2650 /* RIP offset-list configuration. */
2651 config_write_ripng_offset_list (vty
);
2653 /* RIPng aggregate routes. */
2654 for (rp
= route_top (ripng
->aggregate
); rp
; rp
= route_next (rp
))
2655 if (rp
->info
!= NULL
)
2656 vty_out (vty
, " aggregate-address %s/%d%s",
2657 inet6_ntoa (rp
->p
.u
.prefix6
),
2662 /* RIPng static routes. */
2663 for (rp
= route_top (ripng
->route
); rp
; rp
= route_next (rp
))
2664 if (rp
->info
!= NULL
)
2665 vty_out (vty
, " route %s/%d%s", inet6_ntoa (rp
->p
.u
.prefix6
),
2669 /* RIPng timers configuration. */
2670 if (ripng
->update_time
!= RIPNG_UPDATE_TIMER_DEFAULT
||
2671 ripng
->timeout_time
!= RIPNG_TIMEOUT_TIMER_DEFAULT
||
2672 ripng
->garbage_time
!= RIPNG_GARBAGE_TIMER_DEFAULT
)
2674 vty_out (vty
, " timers basic %ld %ld %ld%s",
2676 ripng
->timeout_time
,
2677 ripng
->garbage_time
,
2681 if (ripng
->update_time
!= RIPNG_UPDATE_TIMER_DEFAULT
)
2682 vty_out (vty
, " update-timer %d%s", ripng
->update_time
,
2684 if (ripng
->timeout_time
!= RIPNG_TIMEOUT_TIMER_DEFAULT
)
2685 vty_out (vty
, " timeout-timer %d%s", ripng
->timeout_time
,
2687 if (ripng
->garbage_time
!= RIPNG_GARBAGE_TIMER_DEFAULT
)
2688 vty_out (vty
, " garbage-timer %d%s", ripng
->garbage_time
,
2692 write
+= config_write_distribute (vty
);
2694 write
+= config_write_if_rmap (vty
);
2701 /* RIPng node structure. */
2702 struct cmd_node cmd_ripng_node
=
2705 "%s(config-router)# ",
2710 ripng_distribute_update (struct distribute
*dist
)
2712 struct interface
*ifp
;
2713 struct ripng_interface
*ri
;
2714 struct access_list
*alist
;
2715 struct prefix_list
*plist
;
2720 ifp
= if_lookup_by_name (dist
->ifname
);
2726 if (dist
->list
[DISTRIBUTE_IN
])
2728 alist
= access_list_lookup (AFI_IP6
, dist
->list
[DISTRIBUTE_IN
]);
2730 ri
->list
[RIPNG_FILTER_IN
] = alist
;
2732 ri
->list
[RIPNG_FILTER_IN
] = NULL
;
2735 ri
->list
[RIPNG_FILTER_IN
] = NULL
;
2737 if (dist
->list
[DISTRIBUTE_OUT
])
2739 alist
= access_list_lookup (AFI_IP6
, dist
->list
[DISTRIBUTE_OUT
]);
2741 ri
->list
[RIPNG_FILTER_OUT
] = alist
;
2743 ri
->list
[RIPNG_FILTER_OUT
] = NULL
;
2746 ri
->list
[RIPNG_FILTER_OUT
] = NULL
;
2748 if (dist
->prefix
[DISTRIBUTE_IN
])
2750 plist
= prefix_list_lookup (AFI_IP6
, dist
->prefix
[DISTRIBUTE_IN
]);
2752 ri
->prefix
[RIPNG_FILTER_IN
] = plist
;
2754 ri
->prefix
[RIPNG_FILTER_IN
] = NULL
;
2757 ri
->prefix
[RIPNG_FILTER_IN
] = NULL
;
2759 if (dist
->prefix
[DISTRIBUTE_OUT
])
2761 plist
= prefix_list_lookup (AFI_IP6
, dist
->prefix
[DISTRIBUTE_OUT
]);
2763 ri
->prefix
[RIPNG_FILTER_OUT
] = plist
;
2765 ri
->prefix
[RIPNG_FILTER_OUT
] = NULL
;
2768 ri
->prefix
[RIPNG_FILTER_OUT
] = NULL
;
2772 ripng_distribute_update_interface (struct interface
*ifp
)
2774 struct distribute
*dist
;
2776 dist
= distribute_lookup (ifp
->name
);
2778 ripng_distribute_update (dist
);
2781 /* Update all interface's distribute list. */
2783 ripng_distribute_update_all (struct prefix_list
*notused
)
2785 struct interface
*ifp
;
2786 struct listnode
*node
;
2788 for (ALL_LIST_ELEMENTS_RO (iflist
, node
, ifp
))
2789 ripng_distribute_update_interface (ifp
);
2793 ripng_distribute_update_all_wrapper (struct access_list
*notused
)
2795 ripng_distribute_update_all(NULL
);
2798 /* delete all the added ripng routes. */
2803 struct route_node
*rp
;
2804 struct ripng_info
*rinfo
;
2807 /* Clear RIPng routes */
2808 for (rp
= route_top (ripng
->table
); rp
; rp
= route_next (rp
)) {
2809 if ((rinfo
= rp
->info
) != NULL
) {
2810 if ((rinfo
->type
== ZEBRA_ROUTE_RIPNG
) &&
2811 (rinfo
->sub_type
== RIPNG_ROUTE_RTE
))
2812 ripng_zebra_ipv6_delete ((struct prefix_ipv6
*)&rp
->p
,
2813 &rinfo
->nexthop
, rinfo
->metric
);
2815 RIPNG_TIMER_OFF (rinfo
->t_timeout
);
2816 RIPNG_TIMER_OFF (rinfo
->t_garbage_collect
);
2819 route_unlock_node (rp
);
2821 ripng_info_free(rinfo
);
2825 /* Cancel the RIPng timers */
2826 RIPNG_TIMER_OFF (ripng
->t_update
);
2827 RIPNG_TIMER_OFF (ripng
->t_triggered_update
);
2828 RIPNG_TIMER_OFF (ripng
->t_triggered_interval
);
2830 /* Cancel the read thread */
2831 if (ripng
->t_read
) {
2832 thread_cancel (ripng
->t_read
);
2833 ripng
->t_read
= NULL
;
2836 /* Close the RIPng socket */
2837 if (ripng
->sock
>= 0) {
2842 /* Static RIPng route configuration. */
2843 for (rp
= route_top (ripng
->route
); rp
; rp
= route_next (rp
))
2846 route_unlock_node (rp
);
2849 /* RIPng aggregated prefixes */
2850 for (rp
= route_top (ripng
->aggregate
); rp
; rp
= route_next (rp
))
2853 route_unlock_node (rp
);
2856 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
2857 if (ripng
->route_map
[i
].name
)
2858 free (ripng
->route_map
[i
].name
);
2860 XFREE (MTYPE_ROUTE_TABLE
, ripng
->table
);
2861 XFREE (MTYPE_ROUTE_TABLE
, ripng
->route
);
2862 XFREE (MTYPE_ROUTE_TABLE
, ripng
->aggregate
);
2864 XFREE (MTYPE_RIPNG
, ripng
);
2868 ripng_clean_network();
2869 ripng_passive_interface_clean ();
2870 ripng_offset_clean ();
2871 ripng_interface_clean ();
2872 ripng_redistribute_clean ();
2875 /* Reset all values to the default settings. */
2879 /* Call ripd related reset functions. */
2880 ripng_debug_reset ();
2881 ripng_route_map_reset ();
2883 /* Call library reset functions. */
2885 access_list_reset ();
2886 prefix_list_reset ();
2888 distribute_list_reset ();
2890 ripng_interface_reset ();
2892 ripng_zclient_reset ();
2896 ripng_if_rmap_update (struct if_rmap
*if_rmap
)
2898 struct interface
*ifp
;
2899 struct ripng_interface
*ri
;
2900 struct route_map
*rmap
;
2902 ifp
= if_lookup_by_name (if_rmap
->ifname
);
2908 if (if_rmap
->routemap
[IF_RMAP_IN
])
2910 rmap
= route_map_lookup_by_name (if_rmap
->routemap
[IF_RMAP_IN
]);
2912 ri
->routemap
[IF_RMAP_IN
] = rmap
;
2914 ri
->routemap
[IF_RMAP_IN
] = NULL
;
2917 ri
->routemap
[RIPNG_FILTER_IN
] = NULL
;
2919 if (if_rmap
->routemap
[IF_RMAP_OUT
])
2921 rmap
= route_map_lookup_by_name (if_rmap
->routemap
[IF_RMAP_OUT
]);
2923 ri
->routemap
[IF_RMAP_OUT
] = rmap
;
2925 ri
->routemap
[IF_RMAP_OUT
] = NULL
;
2928 ri
->routemap
[RIPNG_FILTER_OUT
] = NULL
;
2932 ripng_if_rmap_update_interface (struct interface
*ifp
)
2934 struct if_rmap
*if_rmap
;
2936 if_rmap
= if_rmap_lookup (ifp
->name
);
2938 ripng_if_rmap_update (if_rmap
);
2942 ripng_routemap_update_redistribute (void)
2948 for (i
= 0; i
< ZEBRA_ROUTE_MAX
; i
++)
2950 if (ripng
->route_map
[i
].name
)
2951 ripng
->route_map
[i
].map
=
2952 route_map_lookup_by_name (ripng
->route_map
[i
].name
);
2958 ripng_routemap_update (const char *unused
)
2960 struct interface
*ifp
;
2961 struct listnode
*node
;
2963 for (ALL_LIST_ELEMENTS_RO (iflist
, node
, ifp
))
2964 ripng_if_rmap_update_interface (ifp
);
2966 ripng_routemap_update_redistribute ();
2969 /* Initialize ripng structure and set commands. */
2974 srand (time (NULL
));
2976 /* Install RIPNG_NODE. */
2977 install_node (&cmd_ripng_node
, ripng_config_write
);
2979 /* Install ripng commands. */
2980 install_element (VIEW_NODE
, &show_ipv6_ripng_cmd
);
2981 install_element (VIEW_NODE
, &show_ipv6_ripng_status_cmd
);
2983 install_element (ENABLE_NODE
, &show_ipv6_ripng_cmd
);
2984 install_element (ENABLE_NODE
, &show_ipv6_ripng_status_cmd
);
2986 install_element (CONFIG_NODE
, &router_ripng_cmd
);
2987 install_element (CONFIG_NODE
, &no_router_ripng_cmd
);
2989 install_default (RIPNG_NODE
);
2990 install_element (RIPNG_NODE
, &ripng_route_cmd
);
2991 install_element (RIPNG_NODE
, &no_ripng_route_cmd
);
2992 install_element (RIPNG_NODE
, &ripng_aggregate_address_cmd
);
2993 install_element (RIPNG_NODE
, &no_ripng_aggregate_address_cmd
);
2995 install_element (RIPNG_NODE
, &ripng_default_metric_cmd
);
2996 install_element (RIPNG_NODE
, &no_ripng_default_metric_cmd
);
2997 install_element (RIPNG_NODE
, &no_ripng_default_metric_val_cmd
);
2999 install_element (RIPNG_NODE
, &ripng_timers_cmd
);
3000 install_element (RIPNG_NODE
, &no_ripng_timers_cmd
);
3001 install_element (RIPNG_NODE
, &no_ripng_timers_val_cmd
);
3003 install_element (RIPNG_NODE
, &ripng_update_timer_cmd
);
3004 install_element (RIPNG_NODE
, &no_ripng_update_timer_cmd
);
3005 install_element (RIPNG_NODE
, &ripng_timeout_timer_cmd
);
3006 install_element (RIPNG_NODE
, &no_ripng_timeout_timer_cmd
);
3007 install_element (RIPNG_NODE
, &ripng_garbage_timer_cmd
);
3008 install_element (RIPNG_NODE
, &no_ripng_garbage_timer_cmd
);
3011 install_element (RIPNG_NODE
, &ripng_default_information_originate_cmd
);
3012 install_element (RIPNG_NODE
, &no_ripng_default_information_originate_cmd
);
3015 ripng_debug_init ();
3017 /* Access list install. */
3018 access_list_init ();
3019 access_list_add_hook (ripng_distribute_update_all_wrapper
);
3020 access_list_delete_hook (ripng_distribute_update_all_wrapper
);
3022 /* Prefix list initialize.*/
3023 prefix_list_init ();
3024 prefix_list_add_hook (ripng_distribute_update_all
);
3025 prefix_list_delete_hook (ripng_distribute_update_all
);
3027 /* Distribute list install. */
3028 distribute_list_init (RIPNG_NODE
);
3029 distribute_list_add_hook (ripng_distribute_update
);
3030 distribute_list_delete_hook (ripng_distribute_update
);
3032 /* Route-map for interface. */
3033 ripng_route_map_init ();
3034 ripng_offset_init ();
3036 route_map_add_hook (ripng_routemap_update
);
3037 route_map_delete_hook (ripng_routemap_update
);
3039 if_rmap_init (RIPNG_NODE
);
3040 if_rmap_hook_add (ripng_if_rmap_update
);
3041 if_rmap_hook_delete (ripng_if_rmap_update
);