ripngd.c
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上传日期:2009-11-15
资源大小:1338k
文件大小:61k
- /* RIPng daemon
- * Copyright (C) 1998, 1999 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Zebra; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- */
- #include <zebra.h>
- /* For struct udphdr. */
- #include <netinet/udp.h>
- #include "prefix.h"
- #include "filter.h"
- #include "log.h"
- #include "thread.h"
- #include "memory.h"
- #include "if.h"
- #include "stream.h"
- #include "table.h"
- #include "command.h"
- #include "sockopt.h"
- #include "distribute.h"
- #include "plist.h"
- #include "routemap.h"
- #include "ripngd/ripngd.h"
- #include "ripngd/ripng_route.h"
- #include "ripngd/ripng_debug.h"
- #include "ripngd/ripng_ifrmap.h"
- #define min(a, b) ((a) < (b) ? (a) : (b))
- /* RIPng structure which includes many parameters related to RIPng
- protocol. If ripng couldn't active or ripng doesn't configured,
- ripng->fd must be negative value. */
- struct ripng *ripng = NULL;
- enum
- {
- ripng_all_route,
- ripng_changed_route,
- ripng_split_horizon,
- ripng_no_split_horizon
- };
- /* Prototypes. */
- void
- ripng_output_process (struct interface *, struct sockaddr_in6 *, int, int);
- int
- ripng_triggered_update (struct thread *);
- /* RIPng next hop specification. */
- struct ripng_nexthop
- {
- enum ripng_nexthop_type
- {
- RIPNG_NEXTHOP_UNSPEC,
- RIPNG_NEXTHOP_ADDRESS
- } flag;
- struct in6_addr address;
- };
- /* Utility function for making IPv6 address string. */
- const char *
- inet6_ntop (struct in6_addr *p)
- {
- static char buf[INET6_ADDRSTRLEN];
- inet_ntop (AF_INET6, p, buf, INET6_ADDRSTRLEN);
- return buf;
- }
- /* Allocate new ripng information. */
- struct ripng_info *
- ripng_info_new ()
- {
- struct ripng_info *new;
- new = XCALLOC (MTYPE_RIPNG_ROUTE, sizeof (struct ripng_info));
- return new;
- }
- /* Free ripng information. */
- void
- ripng_info_free (struct ripng_info *rinfo)
- {
- XFREE (MTYPE_RIPNG_ROUTE, rinfo);
- }
- static int
- setsockopt_so_recvbuf (int sock, int size)
- {
- int ret;
- ret = setsockopt (sock, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof (int));
- if (ret < 0)
- zlog (NULL, LOG_ERR, "can't setsockopt SO_RCVBUF");
- return ret;
- }
- /* Create ripng socket. */
- int
- ripng_make_socket (void)
- {
- int ret;
- int sock;
- struct sockaddr_in6 ripaddr;
- sock = socket (AF_INET6, SOCK_DGRAM, 0);
- if (sock < 0)
- {
- zlog (NULL, LOG_ERR, "Can't make ripng socket");
- return sock;
- }
- ret = setsockopt_so_recvbuf (sock, 8096);
- if (ret < 0)
- return ret;
- ret = setsockopt_ipv6_pktinfo (sock, 1);
- if (ret < 0)
- return ret;
- ret = setsockopt_ipv6_multicast_hops (sock, 255);
- if (ret < 0)
- return ret;
- ret = setsockopt_ipv6_multicast_loop (sock, 0);
- if (ret < 0)
- return ret;
- ret = setsockopt_ipv6_hoplimit (sock, 1);
- if (ret < 0)
- return ret;
- memset (&ripaddr, 0, sizeof (ripaddr));
- ripaddr.sin6_family = AF_INET6;
- #ifdef SIN6_LEN
- ripaddr.sin6_len = sizeof (struct sockaddr_in6);
- #endif /* SIN6_LEN */
- ripaddr.sin6_port = htons (RIPNG_PORT_DEFAULT);
- ret = bind (sock, (struct sockaddr *) &ripaddr, sizeof (ripaddr));
- if (ret < 0)
- {
- zlog (NULL, LOG_ERR, "Can't bind ripng socket: %s.", strerror (errno));
- return ret;
- }
- return sock;
- }
- /* Send RIPng packet. */
- int
- ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to,
- struct interface *ifp)
- {
- int ret;
- struct msghdr msg;
- struct iovec iov;
- struct cmsghdr *cmsgptr;
- char adata [256];
- struct in6_pktinfo *pkt;
- struct sockaddr_in6 addr;
- #ifdef DEBUG
- if (to)
- zlog_info ("DEBUG RIPng: send to %s", inet6_ntop (&to->sin6_addr));
- zlog_info ("DEBUG RIPng: send if %s", ifp->name);
- zlog_info ("DEBUG RIPng: send packet size %d", bufsize);
- #endif /* DEBUG */
- memset (&addr, 0, sizeof (struct sockaddr_in6));
- addr.sin6_family = AF_INET6;
- #ifdef SIN6_LEN
- addr.sin6_len = sizeof (struct sockaddr_in6);
- #endif /* SIN6_LEN */
- addr.sin6_flowinfo = htonl (RIPNG_PRIORITY_DEFAULT);
- /* When destination is specified. */
- if (to != NULL)
- {
- addr.sin6_addr = to->sin6_addr;
- addr.sin6_port = to->sin6_port;
- }
- else
- {
- inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr);
- addr.sin6_port = htons (RIPNG_PORT_DEFAULT);
- }
- msg.msg_name = (void *) &addr;
- msg.msg_namelen = sizeof (struct sockaddr_in6);
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
- msg.msg_control = (void *) adata;
- msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo));
- iov.iov_base = buf;
- iov.iov_len = bufsize;
- cmsgptr = (struct cmsghdr *)adata;
- cmsgptr->cmsg_len = CMSG_LEN(sizeof (struct in6_pktinfo));
- cmsgptr->cmsg_level = IPPROTO_IPV6;
- cmsgptr->cmsg_type = IPV6_PKTINFO;
- pkt = (struct in6_pktinfo *) CMSG_DATA (cmsgptr);
- memset (&pkt->ipi6_addr, 0, sizeof (struct in6_addr));
- pkt->ipi6_ifindex = ifp->ifindex;
- ret = sendmsg (ripng->sock, &msg, 0);
- if (ret < 0)
- zlog_warn ("RIPng send fail on %s: %s", ifp->name, strerror (errno));
- return ret;
- }
- /* Receive UDP RIPng packet from socket. */
- int
- ripng_recv_packet (int sock, u_char *buf, int bufsize,
- struct sockaddr_in6 *from, unsigned int *ifindex,
- int *hoplimit)
- {
- int ret;
- struct msghdr msg;
- struct iovec iov;
- struct cmsghdr *cmsgptr;
- struct in6_addr dst;
- /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this
- point I can't determine size of cmsghdr */
- char adata[1024];
- /* Fill in message and iovec. */
- msg.msg_name = (void *) from;
- msg.msg_namelen = sizeof (struct sockaddr_in6);
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
- msg.msg_control = (void *) adata;
- msg.msg_controllen = sizeof adata;
- iov.iov_base = buf;
- iov.iov_len = bufsize;
- /* If recvmsg fail return minus value. */
- ret = recvmsg (sock, &msg, 0);
- if (ret < 0)
- return ret;
- for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL;
- cmsgptr = CMSG_NXTHDR(&msg, cmsgptr))
- {
- /* I want interface index which this packet comes from. */
- if (cmsgptr->cmsg_level == IPPROTO_IPV6 &&
- cmsgptr->cmsg_type == IPV6_PKTINFO)
- {
- struct in6_pktinfo *ptr;
-
- ptr = (struct in6_pktinfo *) CMSG_DATA (cmsgptr);
- *ifindex = ptr->ipi6_ifindex;
- dst = ptr->ipi6_addr;
- if (*ifindex == 0)
- zlog_warn ("Interface index returned by IPV6_PKTINFO is zero");
- }
- /* Incoming packet's multicast hop limit. */
- if (cmsgptr->cmsg_level == IPPROTO_IPV6 &&
- cmsgptr->cmsg_type == IPV6_HOPLIMIT)
- *hoplimit = *((int *) CMSG_DATA (cmsgptr));
- }
- /* Hoplimit check shold be done when destination address is
- multicast address. */
- if (! IN6_IS_ADDR_MULTICAST (&dst))
- *hoplimit = -1;
- return ret;
- }
- /* Dump rip packet */
- void
- ripng_packet_dump (struct ripng_packet *packet, int size, char *sndrcv)
- {
- caddr_t lim;
- struct rte *rte;
- char *command_str;
- /* Set command string. */
- if (packet->command == RIPNG_REQUEST)
- command_str = "request";
- else if (packet->command == RIPNG_RESPONSE)
- command_str = "response";
- else
- command_str = "unknown";
- /* Dump packet header. */
- zlog_info ("%s %s version %d packet size %d",
- sndrcv, command_str, packet->version, size);
- /* Dump each routing table entry. */
- rte = packet->rte;
- for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++)
- {
- if (rte->metric == RIPNG_METRIC_NEXTHOP)
- zlog_info (" nexthop %s/%d", inet6_ntop (&rte->addr), rte->prefixlen);
- else
- zlog_info (" %s/%d metric %d tag %d",
- inet6_ntop (&rte->addr), rte->prefixlen,
- rte->metric, ntohs (rte->tag));
- }
- }
- /* RIPng next hop address RTE (Route Table Entry). */
- void
- ripng_nexthop_rte (struct rte *rte,
- struct sockaddr_in6 *from,
- struct ripng_nexthop *nexthop)
- {
- char buf[INET6_BUFSIZ];
- /* Logging before checking RTE. */
- if (IS_RIPNG_DEBUG_RECV)
- zlog_info ("RIPng nexthop RTE address %s tag %d prefixlen %d",
- inet6_ntop (&rte->addr), ntohs (rte->tag), rte->prefixlen);
- /* RFC2080 2.1.1 Next Hop:
- The route tag and prefix length in the next hop RTE must be
- set to zero on sending and ignored on receiption. */
- if (ntohs (rte->tag) != 0)
- zlog_warn ("RIPng nexthop RTE with non zero tag value %d from %s",
- ntohs (rte->tag), inet6_ntop (&from->sin6_addr));
- if (rte->prefixlen != 0)
- zlog_warn ("RIPng nexthop RTE with non zero prefixlen value %d from %s",
- rte->prefixlen, inet6_ntop (&from->sin6_addr));
- /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a
- next hop RTE indicates that the next hop address should be the
- originator of the RIPng advertisement. An address specified as a
- next hop must be a link-local address. */
- if (IN6_IS_ADDR_UNSPECIFIED (&rte->addr))
- {
- nexthop->flag = RIPNG_NEXTHOP_UNSPEC;
- memset (&nexthop->address, 0, sizeof (struct in6_addr));
- return;
- }
- if (IN6_IS_ADDR_LINKLOCAL (&rte->addr))
- {
- nexthop->flag = RIPNG_NEXTHOP_ADDRESS;
- IPV6_ADDR_COPY (&nexthop->address, &rte->addr);
- return;
- }
- /* The purpose of the next hop RTE is to eliminate packets being
- routed through extra hops in the system. It is particularly useful
- when RIPng is not being run on all of the routers on a network.
- Note that next hop RTE is "advisory". That is, if the provided
- information is ignored, a possibly sub-optimal, but absolutely
- valid, route may be taken. If the received next hop address is not
- a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */
- zlog_warn ("RIPng nexthop RTE with non link-local address %s from %s",
- inet6_ntop (&rte->addr),
- inet_ntop (AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ));
- nexthop->flag = RIPNG_NEXTHOP_UNSPEC;
- memset (&nexthop->address, 0, sizeof (struct in6_addr));
- return;
- }
- /* If ifp has same link-local address then return 1. */
- int
- ripng_lladdr_check (struct interface *ifp, struct in6_addr *addr)
- {
- listnode listnode;
- struct connected *connected;
- struct prefix *p;
- for (listnode = listhead (ifp->connected); listnode; nextnode (listnode))
- if ((connected = getdata (listnode)) != NULL)
- {
- p = connected->address;
- if (p->family == AF_INET6 &&
- IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6) &&
- IN6_ARE_ADDR_EQUAL (&p->u.prefix6, addr))
- return 1;
- }
- return 0;
- }
- /* RIPng route garbage collect timer. */
- int
- ripng_garbage_collect (struct thread *t)
- {
- struct ripng_info *rinfo;
- struct route_node *rp;
- rinfo = THREAD_ARG (t);
- rinfo->t_garbage_collect = NULL;
- /* Off timeout timer. */
- RIPNG_TIMER_OFF (rinfo->t_timeout);
-
- /* Get route_node pointer. */
- rp = rinfo->rp;
- /* Delete this route from the kernel. */
- ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p,
- &rinfo->nexthop, rinfo->ifindex);
- rinfo->flags &= ~RIPNG_RTF_FIB;
- /* Aggregate count decrement. */
- ripng_aggregate_decrement (rp, rinfo);
- /* Unlock route_node. */
- rp->info = NULL;
- route_unlock_node (rp);
- /* Free RIPng routing information. */
- ripng_info_free (rinfo);
- return 0;
- }
- /* Timeout RIPng routes. */
- int
- ripng_timeout (struct thread *t)
- {
- struct ripng_info *rinfo;
- struct route_node *rp;
- rinfo = THREAD_ARG (t);
- rinfo->t_timeout = NULL;
- /* Get route_node pointer. */
- rp = rinfo->rp;
- /* - The garbage-collection timer is set for 120 seconds. */
- RIPNG_TIMER_ON (rinfo->t_garbage_collect, ripng_garbage_collect,
- ripng->garbage_time);
- /* - The metric for the route is set to 16 (infinity). This causes
- the route to be removed from service. */
- rinfo->metric = RIPNG_METRIC_INFINITY;
- /* - The route change flag is to indicate that this entry has been
- changed. */
- rinfo->flags |= RIPNG_RTF_CHANGED;
- /* - The output process is signalled to trigger a response. */
- ripng_event (RIPNG_TRIGGERED_UPDATE, 0);
- return 0;
- }
- void
- ripng_timeout_update (struct ripng_info *rinfo)
- {
- if (rinfo->metric != RIPNG_METRIC_INFINITY)
- {
- RIPNG_TIMER_OFF (rinfo->t_timeout);
- RIPNG_TIMER_ON (rinfo->t_timeout, ripng_timeout, ripng->timeout_time);
- }
- }
- /* Process RIPng route according to RFC2080. */
- void
- ripng_route_process (struct rte *rte, struct sockaddr_in6 *from,
- struct ripng_nexthop *ripng_nexthop,
- struct interface *ifp)
- {
- struct prefix_ipv6 p;
- struct route_node *rp;
- struct ripng_info *rinfo;
- struct ripng_interface *ri;
- struct in6_addr *nexthop;
- u_char oldmetric;
- int same = 0;
- /* Make prefix structure. */
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- /* p.prefix = rte->addr; */
- IPV6_ADDR_COPY (&p.prefix, &rte->addr);
- p.prefixlen = rte->prefixlen;
- /* Make sure mask is applied. */
- /* XXX We have to check the prefix is valid or not before call
- apply_mask_ipv6. */
- apply_mask_ipv6 (&p);
- /* Apply input filters. */
- ri = ifp->info;
- if (ri->list[RIPNG_FILTER_IN])
- {
- if (access_list_apply (ri->list[RIPNG_FILTER_IN], &p) == FILTER_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by distribute in",
- inet6_ntop (&p.prefix), p.prefixlen);
- return;
- }
- }
- if (ri->prefix[RIPNG_FILTER_IN])
- {
- if (prefix_list_apply (ri->prefix[RIPNG_FILTER_IN], &p) == PREFIX_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by prefix-list in",
- inet6_ntop (&p.prefix), p.prefixlen);
- return;
- }
- }
- /* Modify entry. */
- if (ri->routemap[RIPNG_FILTER_IN])
- {
- int ret;
- struct ripng_info newinfo;
- memset (&newinfo, 0, sizeof (struct ripng_info));
- newinfo.metric = rte->metric;
- ret = route_map_apply (ri->routemap[RIPNG_FILTER_IN],
- (struct prefix *)&p, RMAP_RIPNG, &newinfo);
- if (ret == RMAP_DENYMATCH)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by route-map in",
- inet6_ntop (&p.prefix), p.prefixlen);
- return;
- }
- rte->metric = newinfo.metric;
- }
- /* Set nexthop pointer. */
- if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS)
- nexthop = &ripng_nexthop->address;
- else
- nexthop = &from->sin6_addr;
- /* Lookup RIPng routing table. */
- rp = route_node_get (ripng->table, (struct prefix *) &p);
- if (rp->info == NULL)
- {
- /* Now, check to see whether there is already an explicit route
- for the destination prefix. If there is no such route, add
- this route to the routing table, unless the metric is
- infinity (there is no point in adding a route which
- unusable). */
- if (rte->metric != RIPNG_METRIC_INFINITY)
- {
- rinfo = ripng_info_new ();
-
- /* - Setting the destination prefix and length to those in
- the RTE. */
- rp->info = rinfo;
- rinfo->rp = rp;
- /* - Setting the metric to the newly calculated metric (as
- described above). */
- rinfo->metric = rte->metric;
- rinfo->tag = ntohs (rte->tag);
- /* - Set the next hop address to be the address of the router
- from which the datagram came or the next hop address
- specified by a next hop RTE. */
- IPV6_ADDR_COPY (&rinfo->nexthop, nexthop);
- IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr);
- rinfo->ifindex = ifp->ifindex;
- /* - Initialize the timeout for the route. If the
- garbage-collection timer is running for this route, stop it. */
- ripng_timeout_update (rinfo);
- /* - Set the route change flag. */
- rinfo->flags |= RIPNG_RTF_CHANGED;
- /* - Signal the output process to trigger an update (see section
- 2.5). */
- ripng_event (RIPNG_TRIGGERED_UPDATE, 0);
- /* Finally, route goes into the kernel. */
- rinfo->type = ZEBRA_ROUTE_RIPNG;
- rinfo->sub_type = RIPNG_ROUTE_RTE;
- ripng_zebra_ipv6_add (&p, &rinfo->nexthop, rinfo->ifindex);
- rinfo->flags |= RIPNG_RTF_FIB;
- /* Aggregate check. */
- ripng_aggregate_increment (rp, rinfo);
- }
- }
- else
- {
- rinfo = rp->info;
-
- /* If there is an existing route, compare the next hop address
- to the address of the router from which the datagram came.
- If this datagram is from the same router as the existing
- route, reinitialize the timeout. */
- same = (IN6_ARE_ADDR_EQUAL (&rinfo->from, &from->sin6_addr)
- && (rinfo->ifindex == ifp->ifindex));
- if (same)
- ripng_timeout_update (rinfo);
- /* Next, compare the metrics. If the datagram is from the same
- router as the existing route, and the new metric is different
- than the old one; or, if the new metric is lower than the old
- one; do the following actions: */
- if ((same && rinfo->metric != rte->metric) ||
- rte->metric < rinfo->metric)
- {
- /* - Adopt the route from the datagram. That is, put the
- new metric in, and adjust the next hop address (if
- necessary). */
- oldmetric = rinfo->metric;
- rinfo->metric = rte->metric;
- rinfo->tag = ntohs (rte->tag);
- if (! IN6_ARE_ADDR_EQUAL (&rinfo->nexthop, nexthop))
- {
- ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex);
- ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex);
- rinfo->flags |= RIPNG_RTF_FIB;
- IPV6_ADDR_COPY (&rinfo->nexthop, nexthop);
- }
- IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr);
- rinfo->ifindex = ifp->ifindex;
- /* - Set the route change flag and signal the output process
- to trigger an update. */
- rinfo->flags |= RIPNG_RTF_CHANGED;
- ripng_event (RIPNG_TRIGGERED_UPDATE, 0);
- /* - If the new metric is infinity, start the deletion
- process (described above); */
- if (rinfo->metric == RIPNG_METRIC_INFINITY)
- {
- /* If the new metric is infinity, the deletion process
- begins for the route, which is no longer used for
- routing packets. Note that the deletion process is
- started only when the metric is first set to
- infinity. If the metric was already infinity, then a
- new deletion process is not started. */
- if (oldmetric != RIPNG_METRIC_INFINITY)
- {
- /* - The garbage-collection timer is set for 120 seconds. */
- RIPNG_TIMER_ON (rinfo->t_garbage_collect,
- ripng_garbage_collect, ripng->garbage_time);
- RIPNG_TIMER_OFF (rinfo->t_timeout);
- /* - The metric for the route is set to 16
- (infinity). This causes the route to be removed
- from service.*/
- /* - The route change flag is to indicate that this
- entry has been changed. */
- /* - The output process is signalled to trigger a
- response. */
- ; /* Above processes are already done previously. */
- }
- }
- else
- {
- /* otherwise, re-initialize the timeout. */
- ripng_timeout_update (rinfo);
- /* Should a new route to this network be established
- while the garbage-collection timer is running, the
- new route will replace the one that is about to be
- deleted. In this case the garbage-collection timer
- must be cleared. */
- RIPNG_TIMER_OFF (rinfo->t_garbage_collect);
- }
- }
- /* Unlock tempolary lock of the route. */
- route_unlock_node (rp);
- }
- }
- /* Add redistributed route to RIPng table. */
- void
- ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p,
- unsigned int ifindex)
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- /* Redistribute route */
- if (IN6_IS_ADDR_LINKLOCAL (&p->prefix))
- return;
- if (IN6_IS_ADDR_LOOPBACK (&p->prefix))
- return;
- rp = route_node_get (ripng->table, (struct prefix *) p);
- rinfo = rp->info;
- if (rinfo)
- {
- RIPNG_TIMER_OFF (rinfo->t_timeout);
- RIPNG_TIMER_OFF (rinfo->t_garbage_collect);
- route_unlock_node (rp);
- }
- else
- {
- rinfo = ripng_info_new ();
- ripng_aggregate_increment (rp, rinfo);
- }
- rinfo->type = type;
- rinfo->sub_type = sub_type;
- rinfo->ifindex = ifindex;
- rinfo->metric = 1;
- rinfo->flags |= RIPNG_RTF_FIB;
- rinfo->rp = rp;
- rp->info = rinfo;
- }
- /* Delete redistributed route to RIPng table. */
- void
- ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p,
- unsigned int ifindex)
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- if (IN6_IS_ADDR_LINKLOCAL (&p->prefix))
- return;
- if (IN6_IS_ADDR_LOOPBACK (&p->prefix))
- return;
- rp = route_node_lookup (ripng->table, (struct prefix *) p);
- if (rp)
- {
- rinfo = rp->info;
- if (rinfo != NULL
- && rinfo->type == type
- && rinfo->sub_type == sub_type
- && rinfo->ifindex == ifindex)
- {
- rp->info = NULL;
- RIPNG_TIMER_OFF (rinfo->t_timeout);
- RIPNG_TIMER_OFF (rinfo->t_garbage_collect);
-
- ripng_info_free (rinfo);
- route_unlock_node (rp);
- }
- /* For unlock route_node_lookup (). */
- route_unlock_node (rp);
- }
- }
- /* Withdraw redistributed route. */
- void
- ripng_redistribute_withdraw (int type)
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- for (rp = route_top (ripng->table); rp; rp = route_next (rp))
- if ((rinfo = rp->info) != NULL)
- {
- if (rinfo->type == type)
- {
- rp->info = NULL;
- RIPNG_TIMER_OFF (rinfo->t_timeout);
- RIPNG_TIMER_OFF (rinfo->t_garbage_collect);
- ripng_info_free (rinfo);
- route_unlock_node (rp);
- }
- }
- }
- /* RIP routing information. */
- void
- ripng_response_process (struct ripng_packet *packet, int size,
- struct sockaddr_in6 *from, struct interface *ifp,
- int hoplimit)
- {
- caddr_t lim;
- struct rte *rte;
- struct ripng_nexthop nexthop;
- /* RFC2080 2.4.2 Response Messages:
- The Response must be ignored if it is not from the RIPng port. */
- if (ntohs (from->sin6_port) != RIPNG_PORT_DEFAULT)
- {
- zlog_warn ("RIPng packet comes from non RIPng port %d from %s",
- ntohs (from->sin6_port), inet6_ntop (&from->sin6_addr));
- return;
- }
- /* The datagram's IPv6 source address should be checked to see
- whether the datagram is from a valid neighbor; the source of the
- datagram must be a link-local address. */
- if (! IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr))
- {
- zlog_warn ("RIPng packet comes from non link local address %s",
- inet6_ntop (&from->sin6_addr));
- return;
- }
- /* It is also worth checking to see whether the response is from one
- of the router's own addresses. Interfaces on broadcast networks
- may receive copies of their own multicasts immediately. If a
- router processes its own output as new input, confusion is likely,
- and such datagrams must be ignored. */
- if (ripng_lladdr_check (ifp, &from->sin6_addr))
- {
- zlog_warn ("RIPng packet comes from my own link local address %s",
- inet6_ntop (&from->sin6_addr));
- return;
- }
- /* As an additional check, periodic advertisements must have their
- hop counts set to 255, and inbound, multicast packets sent from the
- RIPng port (i.e. periodic advertisement or triggered update
- packets) must be examined to ensure that the hop count is 255. */
- if (hoplimit >= 0 && hoplimit != 255)
- {
- zlog_warn ("RIPng packet comes with non 255 hop count %d from %s",
- hoplimit, inet6_ntop (&from->sin6_addr));
- return;
- }
- /* Reset nexthop. */
- memset (&nexthop, 0, sizeof (struct ripng_nexthop));
- nexthop.flag = RIPNG_NEXTHOP_UNSPEC;
- /* Set RTE pointer. */
- rte = packet->rte;
- for (lim = ((caddr_t) packet) + size; (caddr_t) rte < lim; rte++)
- {
- /* First of all, we have to check this RTE is next hop RTE or
- not. Next hop RTE is completely different with normal RTE so
- we need special treatment. */
- if (rte->metric == RIPNG_METRIC_NEXTHOP)
- {
- ripng_nexthop_rte (rte, from, &nexthop);
- continue;
- }
- /* RTE information validation. */
- /* - is the destination prefix valid (e.g., not a multicast
- prefix and not a link-local address) A link-local address
- should never be present in an RTE. */
- if (IN6_IS_ADDR_MULTICAST (&rte->addr))
- {
- zlog_warn ("Destination prefix is a multicast address %s/%d [%d]",
- inet6_ntop (&rte->addr), rte->prefixlen, rte->metric);
- continue;
- }
- if (IN6_IS_ADDR_LINKLOCAL (&rte->addr))
- {
- zlog_warn ("Destination prefix is a link-local address %s/%d [%d]",
- inet6_ntop (&rte->addr), rte->prefixlen, rte->metric);
- continue;
- }
- if (IN6_IS_ADDR_LOOPBACK (&rte->addr))
- {
- zlog_warn ("Destination prefix is a loopback address %s/%d [%d]",
- inet6_ntop (&rte->addr), rte->prefixlen, rte->metric);
- continue;
- }
- /* - is the prefix length valid (i.e., between 0 and 128,
- inclusive) */
- if (rte->prefixlen > 128)
- {
- zlog_warn ("Invalid prefix length %s/%d from %s%%%s",
- inet6_ntop (&rte->addr), rte->prefixlen,
- inet6_ntop (&from->sin6_addr), ifp->name);
- continue;
- }
- /* - is the metric valid (i.e., between 1 and 16, inclusive) */
- if (! (rte->metric >= 1 && rte->metric <= 16))
- {
- zlog_warn ("Invalid metric %d from %s%%%s", rte->metric,
- inet6_ntop (&from->sin6_addr), ifp->name);
- continue;
- }
- /* Metric calculation. */
- rte->metric += ifp->metric;
- if (rte->metric > RIPNG_METRIC_INFINITY)
- rte->metric = RIPNG_METRIC_INFINITY;
- /* Routing table updates. */
- ripng_route_process (rte, from, &nexthop, ifp);
- }
- }
- /* Response to request message. */
- void
- ripng_request_process (struct ripng_packet *packet,int size,
- struct sockaddr_in6 *from, struct interface *ifp)
- {
- caddr_t lim;
- struct rte *rte;
- struct prefix_ipv6 p;
- struct route_node *rp;
- struct ripng_info *rinfo;
- struct ripng_interface *ri;
- /* Check RIPng process is enabled on this interface. */
- ri = ifp->info;
- if (! ri->running)
- return;
- /* When passive interface is specified, suppress responses */
- if (ri->passive)
- return;
- lim = ((caddr_t) packet) + size;
- rte = packet->rte;
- /* The Request is processed entry by entry. If there are no
- entries, no response is given. */
- if (lim == (caddr_t) rte)
- return;
- /* There is one special case. If there is exactly one entry in the
- request, and it has a destination prefix of zero, a prefix length
- of zero, and a metric of infinity (i.e., 16), then this is a
- request to send the entire routing table. In that case, a call
- is made to the output process to send the routing table to the
- requesting address/port. */
- if (lim == ((caddr_t) (rte + 1)) &&
- IN6_IS_ADDR_UNSPECIFIED (&rte->addr) &&
- rte->prefixlen == 0 &&
- rte->metric == RIPNG_METRIC_INFINITY)
- {
- /* All route with split horizon */
- ripng_output_process (ifp, from, ripng_all_route, ripng_split_horizon);
- }
- else
- {
- /* Except for this special case, processing is quite simple.
- Examine the list of RTEs in the Request one by one. For each
- entry, look up the destination in the router's routing
- database and, if there is a route, put that route's metric in
- the metric field of the RTE. If there is no explicit route
- to the specified destination, put infinity in the metric
- field. Once all the entries have been filled in, change the
- command from Request to Response and send the datagram back
- to the requestor. */
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- for (; ((caddr_t) rte) < lim; rte++)
- {
- p.prefix = rte->addr;
- p.prefixlen = rte->prefixlen;
- apply_mask_ipv6 (&p);
-
- rp = route_node_lookup (ripng->table, (struct prefix *) &p);
- if (rp)
- {
- rinfo = rp->info;
- rte->metric = rinfo->metric;
- route_unlock_node (rp);
- }
- else
- rte->metric = RIPNG_METRIC_INFINITY;
- }
- packet->command = RIPNG_RESPONSE;
- ripng_send_packet ((caddr_t) packet, size, from, ifp);
- }
- }
- /* First entry point of reading RIPng packet. */
- int
- ripng_read (struct thread *thread)
- {
- int len;
- int sock;
- struct sockaddr_in6 from;
- struct ripng_packet *packet;
- unsigned int ifindex;
- struct interface *ifp;
- int hoplimit = -1;
- /* Check ripng is active and alive. */
- assert (ripng != NULL);
- assert (ripng->sock >= 0);
- /* Fetch thread data and set read pointer to empty for event
- managing. `sock' sould be same as ripng->sock. */
- sock = THREAD_FD (thread);
- ripng->t_read = NULL;
- /* Add myself to the next event. */
- ripng_event (RIPNG_READ, sock);
- /* Read RIPng packet. */
- len = ripng_recv_packet (sock, STREAM_DATA (ripng->ibuf),
- STREAM_SIZE (ripng->ibuf), &from, &ifindex,
- &hoplimit);
- if (len < 0)
- {
- zlog_warn ("RIPng recvfrom failed: %s.", strerror (errno));
- return len;
- }
- /* Check RTE boundary. RTE size (Packet length - RIPng header size
- (4)) must be multiple size of one RTE size (20). */
- if (((len - 4) % 20) != 0)
- {
- zlog_warn ("RIPng invalid packet size %d from %s", len,
- inet6_ntop (&from.sin6_addr));
- return 0;
- }
- packet = (struct ripng_packet *) STREAM_DATA (ripng->ibuf);
- ifp = if_lookup_by_index (ifindex);
- /* RIPng packet received. */
- if (IS_RIPNG_DEBUG_EVENT)
- zlog_info ("RIPng packet received from %s port %d on %s",
- inet6_ntop (&from.sin6_addr), ntohs (from.sin6_port),
- ifp ? ifp->name : "unknown");
- /* Logging before packet checking. */
- if (IS_RIPNG_DEBUG_RECV)
- ripng_packet_dump (packet, len, "RECV");
- /* Packet comes from unknown interface. */
- if (ifp == NULL)
- {
- zlog_warn ("RIPng packet comes from unknown interface %d", ifindex);
- return 0;
- }
- /* Packet version mismatch checking. */
- if (packet->version != ripng->version)
- {
- zlog_warn ("RIPng packet version %d doesn't fit to my version %d",
- packet->version, ripng->version);
- return 0;
- }
- /* Process RIPng packet. */
- switch (packet->command)
- {
- case RIPNG_REQUEST:
- ripng_request_process (packet, len, &from, ifp);
- break;
- case RIPNG_RESPONSE:
- ripng_response_process (packet, len, &from, ifp, hoplimit);
- break;
- default:
- zlog_warn ("Invalid RIPng command %d", packet->command);
- break;
- }
- return 0;
- }
- /* Walk down the RIPng routing table then clear changed flag. */
- void
- ripng_clear_changed_flag ()
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- for (rp = route_top (ripng->table); rp; rp = route_next (rp))
- if ((rinfo = rp->info) != NULL)
- if (rinfo->flags & RIPNG_RTF_CHANGED)
- rinfo->flags &= ~RIPNG_RTF_CHANGED;
- }
- /* Regular update of RIPng route. Send all routing formation to RIPng
- enabled interface. */
- int
- ripng_update (struct thread *t)
- {
- listnode node;
- struct interface *ifp;
- struct ripng_interface *ri;
- /* Clear update timer thread. */
- ripng->t_update = NULL;
- /* Logging update event. */
- if (IS_RIPNG_DEBUG_EVENT)
- zlog_info ("RIPng update timer expired!");
- /* Supply routes to each interface. */
- for (node = listhead (iflist); node; nextnode (node))
- {
- ifp = getdata (node);
- ri = ifp->info;
- if (if_is_loopback (ifp) || ! if_is_up (ifp))
- continue;
- if (! ri->running)
- continue;
- /* When passive interface is specified, suppress announce to the
- interface. */
- if (ri->passive)
- continue;
- #if RIPNG_ADVANCED
- if (ri->ri_send == RIPNG_SEND_OFF)
- {
- if (IS_RIPNG_DEBUG_EVENT)
- zlog (NULL, LOG_INFO,
- "[Event] RIPng send to if %d is suppressed by config",
- ifp->ifindex);
- continue;
- }
- #endif /* RIPNG_ADVANCED */
- ripng_output_process (ifp, NULL, ripng_all_route, ripng_split_horizon);
- }
- /* Triggered updates may be suppressed if a regular update is due by
- the time the triggered update would be sent. */
- if (ripng->t_triggered_interval)
- {
- thread_cancel (ripng->t_triggered_interval);
- ripng->t_triggered_interval = NULL;
- }
- ripng->trigger = 0;
- /* Reset flush event. */
- ripng_event (RIPNG_UPDATE_EVENT, 0);
- return 0;
- }
- /* Triggered update interval timer. */
- int
- ripng_triggered_interval (struct thread *t)
- {
- ripng->t_triggered_interval = NULL;
- if (ripng->trigger)
- {
- ripng->trigger = 0;
- ripng_triggered_update (t);
- }
- return 0;
- }
- /* Execute triggered update. */
- int
- ripng_triggered_update (struct thread *t)
- {
- listnode node;
- struct interface *ifp;
- struct ripng_interface *ri;
- int interval;
- ripng->t_triggered_update = NULL;
- /* Cancel interval timer. */
- if (ripng->t_triggered_interval)
- {
- thread_cancel (ripng->t_triggered_interval);
- ripng->t_triggered_interval = NULL;
- }
- ripng->trigger = 0;
- /* Logging triggered update. */
- if (IS_RIPNG_DEBUG_EVENT)
- zlog_info ("RIPng triggered update!");
- /* Split Horizon processing is done when generating triggered
- updates as well as normal updates (see section 2.6). */
- for (node = listhead (iflist); node; nextnode (node))
- {
- ifp = getdata (node);
- ri = ifp->info;
- if (if_is_loopback (ifp) || ! if_is_up (ifp))
- continue;
- if (! ri->running)
- continue;
- /* When passive interface is specified, suppress announce to the
- interface. */
- if (ri->passive)
- continue;
- ripng_output_process (ifp, NULL, ripng_changed_route,
- ripng_split_horizon);
- }
- /* Once all of the triggered updates have been generated, the route
- change flags should be cleared. */
- ripng_clear_changed_flag ();
- /* After a triggered update is sent, a timer should be set for a
- random interval between 1 and 5 seconds. If other changes that
- would trigger updates occur before the timer expires, a single
- update is triggered when the timer expires. */
- interval = (random () % 5) + 1;
- ripng->t_triggered_interval =
- thread_add_timer (master, ripng_triggered_interval, NULL, interval);
- return 0;
- }
- /* Write routing table entry to the stream and return next index of
- the routing table entry in the stream. */
- int
- ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p,
- u_int16_t tag, u_char metric)
- {
- /* RIPng packet header. */
- if (num == 0)
- {
- stream_putc (s, RIPNG_RESPONSE);
- stream_putc (s, RIPNG_V1);
- stream_putw (s, 0);
- }
- /* Write routing table entry. */
- stream_write (s, (caddr_t) &p->prefix, sizeof (struct in6_addr));
- stream_putw (s, tag);
- stream_putc (s, p->prefixlen);
- stream_putc (s, metric);
- return ++num;
- }
- /* Send RESPONSE message to specified destination. */
- void
- ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to,
- int route_type, int split_horizon)
- {
- int ret;
- struct stream *s;
- struct route_node *rp;
- struct ripng_info *rinfo;
- struct ripng_interface *ri;
- struct ripng_aggregate *aggregate;
- struct prefix_ipv6 *p;
- int num;
- int mtu;
- int rtemax;
- u_char metric;
- u_char metric_set;
- if (IS_RIPNG_DEBUG_EVENT)
- zlog_info ("RIPng update routes on interface %s", ifp->name);
- /* Output stream get from ripng structre. XXX this should be
- interface structure. */
- s = ripng->obuf;
- /* Reset stream and RTE counter. */
- stream_reset (s);
- num = 0;
- mtu = ifp->mtu;
- if (mtu < 0)
- mtu = IFMINMTU;
- rtemax = (min (mtu, RIPNG_MAX_PACKET_SIZE) -
- IPV6_HDRLEN -
- sizeof (struct udphdr) -
- sizeof (struct ripng_packet) +
- sizeof (struct rte)) / sizeof (struct rte);
- #ifdef DEBUG
- zlog_info ("DEBUG RIPng: ifmtu is %d", ifp->mtu);
- zlog_info ("DEBUG RIPng: rtemax is %d", rtemax);
- #endif /* DEBUG */
-
- /* Get RIPng interface. */
- ri = ifp->info;
-
- for (rp = route_top (ripng->table); rp; rp = route_next (rp))
- {
- if ((rinfo = rp->info) != NULL && rinfo->suppress == 0)
- {
- p = (struct prefix_ipv6 *) &rp->p;
- metric = rinfo->metric;
- /* Changed route only output. */
- if (route_type == ripng_changed_route &&
- (! (rinfo->flags & RIPNG_RTF_CHANGED)))
- continue;
- /* Split horizon. */
- if (split_horizon == ripng_split_horizon &&
- rinfo->ifindex == ifp->ifindex)
- continue;
-
- /* Apply output filters.*/
- if (ri->list[RIPNG_FILTER_OUT])
- {
- if (access_list_apply (ri->list[RIPNG_FILTER_OUT],
- (struct prefix *) p) == FILTER_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by distribute out",
- inet6_ntop (&p->prefix), p->prefixlen);
- continue;
- }
- }
- if (ri->prefix[RIPNG_FILTER_OUT])
- {
- if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT],
- (struct prefix *) p) == PREFIX_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by prefix-list out",
- inet6_ntop (&p->prefix), p->prefixlen);
- continue;
- }
- }
- /* Preparation for route-map. */
- metric_set = 0;
- /* Route-map */
- if (ri->routemap[RIPNG_FILTER_OUT])
- {
- int ret;
- struct ripng_info newinfo;
- memset (&newinfo, 0, sizeof (struct ripng_info));
- newinfo.metric = metric;
- ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT],
- (struct prefix *) p, RMAP_RIPNG,
- &newinfo);
- if (ret == RMAP_DENYMATCH)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by route-map out",
- inet6_ntop (&p->prefix), p->prefixlen);
- return;
- }
- metric = newinfo.metric;
- metric_set = newinfo.metric_set;
- }
- /* When the interface route-map does not set metric */
- if (! metric_set)
- {
- /* and the redistribute route-map is set. */
- if (ripng->route_map[rinfo->type].name)
- {
- int ret;
- struct ripng_info newinfo;
- memset (&newinfo, 0, sizeof (struct ripng_info));
- newinfo.metric = metric;
-
- ret = route_map_apply (ripng->route_map[rinfo->type].map,
- (struct prefix *) p, RMAP_RIPNG,
- &newinfo);
- if (ret == RMAP_DENYMATCH)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by route-map",
- inet6_ntop (&p->prefix), p->prefixlen);
- continue;
- }
- metric = newinfo.metric;
- metric_set = newinfo.metric_set;
- }
- /* When the redistribute route-map does not set metric. */
- if (! metric_set)
- {
- /* If the redistribute metric is set. */
- if (ripng->route_map[rinfo->type].metric_config
- && rinfo->metric != RIPNG_METRIC_INFINITY)
- {
- metric = ripng->route_map[rinfo->type].metric;
- }
- else
- {
- /* If the route is not connected or localy generated
- one, use default-metric value */
- if (rinfo->type != ZEBRA_ROUTE_RIPNG
- && rinfo->type != ZEBRA_ROUTE_CONNECT
- && rinfo->metric != RIPNG_METRIC_INFINITY)
- metric = ripng->default_metric;
- }
- }
- }
- /* Write RTE to the stream. */
- num = ripng_write_rte (num, s, p, rinfo->tag, metric);
- if (num == rtemax)
- {
- ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s),
- to, ifp);
- if (ret >= 0 && IS_RIPNG_DEBUG_SEND)
- ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s),
- stream_get_endp(s), "SEND");
- num = 0;
- stream_reset (s);
- }
- }
- if ((aggregate = rp->aggregate) != NULL &&
- aggregate->count > 0 &&
- aggregate->suppress == 0)
- {
- p = (struct prefix_ipv6 *) &rp->p;
- metric = aggregate->metric;
- /* Apply output filters.*/
- if (ri->list[RIPNG_FILTER_OUT])
- {
- if (access_list_apply (ri->list[RIPNG_FILTER_OUT],
- (struct prefix *) p) == FILTER_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by distribute out",
- inet6_ntop (&p->prefix), p->prefixlen);
- continue;
- }
- }
- if (ri->prefix[RIPNG_FILTER_OUT])
- {
- if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT],
- (struct prefix *) p) == PREFIX_DENY)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by prefix-list out",
- inet6_ntop (&p->prefix), p->prefixlen);
- continue;
- }
- }
- /* Route-map */
- if (ri->routemap[RIPNG_FILTER_OUT])
- {
- int ret;
- struct ripng_info newinfo;
- memset (&newinfo, 0, sizeof (struct ripng_info));
- newinfo.metric = metric;
- ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT],
- (struct prefix *) p, RMAP_RIPNG,
- &newinfo);
- if (ret == RMAP_DENYMATCH)
- {
- if (IS_RIPNG_DEBUG_PACKET)
- zlog_info ("RIPng %s/%d is filtered by route-map out",
- inet6_ntop (&p->prefix), p->prefixlen);
- return;
- }
- metric = newinfo.metric;
- }
- /* Changed route only output. */
- if (route_type == ripng_changed_route)
- continue;
- /* Write RTE to the stream. */
- num = ripng_write_rte (num, s, p, aggregate->tag, metric);
- if (num == rtemax)
- {
- ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s),
- to, ifp);
- if (ret >= 0 && IS_RIPNG_DEBUG_SEND)
- ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s),
- stream_get_endp(s), "SEND");
- num = 0;
- stream_reset (s);
- }
- }
- }
-
- /* If unwritten RTE exist, flush it. */
- if (num != 0)
- {
- ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s),
- to, ifp);
- if (ret >= 0 && IS_RIPNG_DEBUG_SEND)
- ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s),
- stream_get_endp (s), "SEND");
- num = 0;
- stream_reset (s);
- }
- }
- /* Create new RIPng instance and set it to global variable. */
- int
- ripng_create ()
- {
- /* ripng should be NULL. */
- assert (ripng == NULL);
- /* Allocaste RIPng instance. */
- ripng = XMALLOC (0, sizeof (struct ripng));
- memset (ripng, 0, sizeof (struct ripng));
- /* Default version and timer values. */
- ripng->version = RIPNG_V1;
- ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT;
- ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT;
- ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT;
- ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT;
-
- /* Make buffer. */
- ripng->ibuf = stream_new (RIPNG_MAX_PACKET_SIZE * 5);
- ripng->obuf = stream_new (RIPNG_MAX_PACKET_SIZE);
- /* Initialize RIPng routig table. */
- ripng->table = route_table_init ();
- ripng->route = route_table_init ();
- ripng->aggregate = route_table_init ();
-
- /* Make socket. */
- ripng->sock = ripng_make_socket ();
- if (ripng->sock < 0)
- return ripng->sock;
- /* Threads. */
- ripng_event (RIPNG_READ, ripng->sock);
- ripng_event (RIPNG_UPDATE_EVENT, 1);
- return 0;
- }
- /* Sned RIPng request to the interface. */
- int
- ripng_request (struct interface *ifp)
- {
- struct rte *rte;
- struct ripng_packet ripng_packet;
- if (IS_RIPNG_DEBUG_EVENT)
- zlog_info ("RIPng send request to %s", ifp->name);
- memset (&ripng_packet, 0, sizeof (ripng_packet));
- ripng_packet.command = RIPNG_REQUEST;
- ripng_packet.version = RIPNG_V1;
- rte = ripng_packet.rte;
- rte->metric = RIPNG_METRIC_INFINITY;
- return ripng_send_packet ((caddr_t) &ripng_packet, sizeof (ripng_packet),
- NULL, ifp);
- }
- /* Clean up installed RIPng routes. */
- void
- ripng_terminate ()
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- for (rp = route_top (ripng->table); rp; rp = route_next (rp))
- if ((rinfo = rp->info) != NULL)
- {
- if (rinfo->type == ZEBRA_ROUTE_RIPNG &&
- rinfo->sub_type == RIPNG_ROUTE_RTE)
- ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p,
- &rinfo->nexthop, rinfo->ifindex);
- }
- }
- int
- ripng_update_jitter (int time)
- {
- return ((rand () % (time + 1)) - (time / 2));
- }
- void
- ripng_event (enum ripng_event event, int sock)
- {
- int ripng_request_all (struct thread *);
- int jitter = 0;
- switch (event)
- {
- case RIPNG_READ:
- if (!ripng->t_read)
- ripng->t_read = thread_add_read (master, ripng_read, NULL, sock);
- break;
- case RIPNG_UPDATE_EVENT:
- if (ripng->t_update)
- {
- thread_cancel (ripng->t_update);
- ripng->t_update = NULL;
- }
- /* Update timer jitter. */
- jitter = ripng_update_jitter (ripng->update_time);
- ripng->t_update =
- thread_add_timer (master, ripng_update, NULL,
- sock ? 2 : ripng->update_time + jitter);
- break;
- case RIPNG_TRIGGERED_UPDATE:
- if (ripng->t_triggered_interval)
- ripng->trigger = 1;
- else if (! ripng->t_triggered_update)
- ripng->t_triggered_update =
- thread_add_event (master, ripng_triggered_update, NULL, 0);
- break;
- default:
- break;
- }
- }
- /* Each route type's strings and default preference. */
- struct
- {
- int key;
- char *str;
- char *str_long;
- int distance;
- } route_info[] =
- {
- { ZEBRA_ROUTE_SYSTEM, "X", "system", 10},
- { ZEBRA_ROUTE_KERNEL, "K", "kernel", 20},
- { ZEBRA_ROUTE_CONNECT, "C", "connected", 30},
- { ZEBRA_ROUTE_STATIC, "S", "static", 40},
- { ZEBRA_ROUTE_RIP, "R", "rip", 50},
- { ZEBRA_ROUTE_RIPNG, "R", "ripng", 50},
- { ZEBRA_ROUTE_OSPF, "O", "ospf", 60},
- { ZEBRA_ROUTE_OSPF6, "O", "ospf6", 60},
- { ZEBRA_ROUTE_BGP, "B", "bgp", 70},
- };
- /* For messages. */
- struct message ripng_route_info[] =
- {
- { RIPNG_ROUTE_RTE, " "},
- { RIPNG_ROUTE_STATIC, "S"},
- { RIPNG_ROUTE_AGGREGATE, "a"}
- };
- /* Print out routes update time. */
- static void
- ripng_vty_out_uptime (struct vty *vty, struct ripng_info *rinfo)
- {
- struct timeval timer_now;
- time_t clock;
- struct tm *tm;
- #define TIME_BUF 25
- char timebuf [TIME_BUF];
- struct thread *thread;
-
- gettimeofday (&timer_now, NULL);
- if ((thread = rinfo->t_timeout) != NULL)
- {
- clock = thread->u.sands.tv_sec - timer_now.tv_sec;
- tm = gmtime (&clock);
- strftime (timebuf, TIME_BUF, "%M:%S", tm);
- vty_out (vty, "%5s", timebuf);
- }
- else if ((thread = rinfo->t_garbage_collect) != NULL)
- {
- clock = thread->u.sands.tv_sec - timer_now.tv_sec;
- tm = gmtime (&clock);
- strftime (timebuf, TIME_BUF, "%M:%S", tm);
- vty_out (vty, "%5s", timebuf);
- }
- }
- DEFUN (show_ipv6_ripng,
- show_ipv6_ripng_cmd,
- "show ipv6 ripng",
- SHOW_STR
- IP_STR
- "Show RIPng routesn")
- {
- struct route_node *rp;
- struct ripng_info *rinfo;
- struct ripng_aggregate *aggregate;
- struct prefix_ipv6 *p;
- int len;
- /* Header of display. */
- vty_out (vty, "%sCodes: R - RIPng%s%s"
- " Network "
- "Next Hop If Met Tag Time%s", VTY_NEWLINE,
- VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
-
- for (rp = route_top (ripng->table); rp; rp = route_next (rp))
- {
- if ((aggregate = rp->aggregate) != NULL)
- {
- p = (struct prefix_ipv6 *) &rp->p;
- #ifdef DEBUG
- len = vty_out (vty, "Ra %d/%d %s/%d ",
- aggregate->count, aggregate->suppress,
- inet6_ntop (&p->prefix), p->prefixlen);
- #else
- len = vty_out (vty, "Ra %s/%d ",
- inet6_ntop (&p->prefix), p->prefixlen);
- #endif /* DEBUG */
- len = 37 - len;
- if (len > 0)
- vty_out (vty, "%*s", len, " ");
- vty_out (vty, "%*s", 26, " ");
- vty_out (vty, "%4d %3d%s", aggregate->metric,
- aggregate->tag,
- VTY_NEWLINE);
- }
- if ((rinfo = rp->info) != NULL)
- {
- p = (struct prefix_ipv6 *) &rp->p;
- #ifdef DEBUG
- len = vty_out (vty, "%s%s 0/%d %s/%d ",
- route_info[rinfo->type].str,
- rinfo->suppress ? "s" : " ",
- rinfo->suppress,
- inet6_ntop (&p->prefix), p->prefixlen);
- #else
- len = vty_out (vty, "%s%s %s/%d ",
- route_info[rinfo->type].str,
- rinfo->suppress ? "s" : " ",
- inet6_ntop (&p->prefix), p->prefixlen);
- #endif /* DEBUG */
- len = 37 - len;
- if (len > 0)
- vty_out (vty, "%*s", len, " ");
- len = vty_out (vty, "%s", inet6_ntop (&rinfo->nexthop));
- len = 26 - len;
- if (len > 0)
- vty_out (vty, "%*s", len, " ");
- vty_out (vty, "%2d %2d %3d ",
- rinfo->ifindex, rinfo->metric, rinfo->tag);
- if (rinfo->sub_type == RIPNG_ROUTE_RTE)
- ripng_vty_out_uptime (vty, rinfo);
- vty_out (vty, "%s", VTY_NEWLINE);
- }
- }
- return CMD_SUCCESS;
- }
- DEFUN (router_ripng,
- router_ripng_cmd,
- "router ripng",
- "Enable a routing processn"
- "Make RIPng instance commandn")
- {
- int ret;
- vty->node = RIPNG_NODE;
- if (!ripng)
- {
- ret = ripng_create ();
- /* Notice to user we couldn't create RIPng. */
- if (ret < 0)
- {
- zlog_warn ("can't create RIPng");
- return CMD_WARNING;
- }
- }
- return CMD_SUCCESS;
- }
- DEFUN (ripng_route,
- ripng_route_cmd,
- "route IPV6ADDR",
- "Static route setupn"
- "Set static RIPng route announcementn")
- {
- int ret;
- struct prefix_ipv6 p;
- struct route_node *rp;
- ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p);
- if (ret <= 0)
- {
- vty_out (vty, "Malformed address%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- apply_mask_ipv6 (&p);
- rp = route_node_get (ripng->route, (struct prefix *) &p);
- if (rp->info)
- {
- vty_out (vty, "There is already same static route.%s", VTY_NEWLINE);
- route_unlock_node (rp);
- return CMD_WARNING;
- }
- rp->info = (void *)1;
- ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0);
- return CMD_SUCCESS;
- }
- DEFUN (no_ripng_route,
- no_ripng_route_cmd,
- "no route IPV6ADDR",
- NO_STR
- "Static route setupn"
- "Delete static RIPng route announcementn")
- {
- int ret;
- struct prefix_ipv6 p;
- struct route_node *rp;
- ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p);
- if (ret <= 0)
- {
- vty_out (vty, "Malformed address%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- apply_mask_ipv6 (&p);
- rp = route_node_lookup (ripng->route, (struct prefix *) &p);
- if (! rp)
- {
- vty_out (vty, "Can't find static route.%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0);
- route_unlock_node (rp);
- rp->info = NULL;
- route_unlock_node (rp);
- return CMD_SUCCESS;
- }
- DEFUN (ripng_aggregate_address,
- ripng_aggregate_address_cmd,
- "aggregate-address X:X::X:X/M",
- "Set aggregate RIPng route announcementn"
- "Aggregate networkn")
- {
- int ret;
- struct prefix p;
- struct route_node *node;
- ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p);
- if (ret <= 0)
- {
- vty_out (vty, "Malformed address%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- /* Check aggregate alredy exist or not. */
- node = route_node_get (ripng->aggregate, &p);
- if (node->info)
- {
- vty_out (vty, "There is already same aggregate route.%s", VTY_NEWLINE);
- route_unlock_node (node);
- return CMD_WARNING;
- }
- node->info = (void *)1;
- ripng_aggregate_add (&p);
- return CMD_SUCCESS;
- }
- DEFUN (no_ripng_aggregate_address,
- no_ripng_aggregate_address_cmd,
- "no aggregate-address X:X::X:X/M",
- NO_STR
- "Delete aggregate RIPng route announcementn"
- "Aggregate network")
- {
- int ret;
- struct prefix p;
- struct route_node *rn;
- ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &p);
- if (ret <= 0)
- {
- vty_out (vty, "Malformed address%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- rn = route_node_lookup (ripng->aggregate, &p);
- if (! rn)
- {
- vty_out (vty, "Can't find aggregate route.%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- route_unlock_node (rn);
- rn->info = NULL;
- route_unlock_node (rn);
- ripng_aggregate_delete (&p);
- return CMD_SUCCESS;
- }
- DEFUN (ripng_default_metric,
- ripng_default_metric_cmd,
- "default-metric <1-16>",
- "Set a metric of redistribute routesn"
- "Default metricn")
- {
- if (ripng)
- {
- ripng->default_metric = atoi (argv[0]);
- }
- return CMD_SUCCESS;
- }
- DEFUN (no_ripng_default_metric,
- no_ripng_default_metric_cmd,
- "no default-metric",
- NO_STR
- "Set a metric of redistribute routesn"
- "Default metricn")
- {
- if (ripng)
- {
- ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT;
- }
- return CMD_SUCCESS;
- }
- ALIAS (no_ripng_default_metric,
- no_ripng_default_metric_val_cmd,
- "no default-metric <1-16>",
- NO_STR
- "Set a metric of redistribute routesn"
- "Default metricn");
- DEFUN (ripng_timers,
- ripng_timers_cmd,
- "timers basic <0-65535> <0-65535> <0-65535>",
- "RIPng timers setupn"
- "Basic timern"
- "Routing table update timer value in second. Default is 30.n"
- "Routing information timeout timer. Default is 180.n"
- "Garbage collection timer. Default is 120.n")
- {
- unsigned long update;
- unsigned long timeout;
- unsigned long garbage;
- char *endptr = NULL;
- update = strtoul (argv[0], &endptr, 10);
- if (update == ULONG_MAX || *endptr != ' ')
- {
- vty_out (vty, "update timer value error%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- timeout = strtoul (argv[1], &endptr, 10);
- if (timeout == ULONG_MAX || *endptr != ' ')
- {
- vty_out (vty, "timeout timer value error%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- garbage = strtoul (argv[2], &endptr, 10);
- if (garbage == ULONG_MAX || *endptr != ' ')
- {
- vty_out (vty, "garbage timer value error%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- /* Set each timer value. */
- ripng->update_time = update;
- ripng->timeout_time = timeout;
- ripng->garbage_time = garbage;
- /* Reset update timer thread. */
- ripng_event (RIPNG_UPDATE_EVENT, 0);
- return CMD_SUCCESS;
- }
- DEFUN (no_ripng_timers,
- no_ripng_timers_cmd,
- "no timers basic",
- NO_STR
- "RIPng timers setupn"
- "Basic timern")
- {
- /* Set each timer value to the default. */
- ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT;
- ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT;
- ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT;
- /* Reset update timer thread. */
- ripng_event (RIPNG_UPDATE_EVENT, 0);
- return CMD_SUCCESS;
- }
- DEFUN (show_ipv6_protocols, show_ipv6_protocols_cmd,
- "show ipv6 protocols",
- SHOW_STR
- IP_STR
- "Routing protocol information")
- {
- if (! ripng)
- return CMD_SUCCESS;
- vty_out (vty, "Routing Protocol is "ripng"%s", VTY_NEWLINE);
-
- vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds%s",
- ripng->update_time, 0,
- VTY_NEWLINE);
- vty_out (vty, "Timerout after %ld seconds, garbage correct %ld%s",
- ripng->timeout_time,
- ripng->garbage_time,
- VTY_NEWLINE);
- vty_out (vty, "Outgoing update filter list for all interfaces is not set");
- vty_out (vty, "Incoming update filter list for all interfaces is not set");
- return CMD_SUCCESS;
- }
- /* Please be carefull to use this command. */
- DEFUN (ripng_default_information_originate,
- ripng_default_information_originate_cmd,
- "default-information originate",
- "Default route informationn"
- "Distribute default routen")
- {
- struct prefix_ipv6 p;
- ripng->default_information = 1;
- str2prefix_ipv6 ("::/0", &p);
- ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0);
- return CMD_SUCCESS;
- }
- DEFUN (no_ripng_default_information_originate,
- no_ripng_default_information_originate_cmd,
- "no default-information originate",
- NO_STR
- "Default route informationn"
- "Distribute default routen")
- {
- struct prefix_ipv6 p;
- ripng->default_information = 0;
- str2prefix_ipv6 ("::/0", &p);
- ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0);
- return CMD_SUCCESS;
- }
- /* RIPng configuration write function. */
- int
- ripng_config_write (struct vty *vty)
- {
- int ripng_network_write (struct vty *);
- void ripng_redistribute_write (struct vty *);
- int write = 0;
- struct route_node *rp;
- if (ripng)
- {
- /* RIPng router. */
- vty_out (vty, "router ripng%s", VTY_NEWLINE);
- if (ripng->default_information)
- vty_out (vty, " default-information originate%s", VTY_NEWLINE);
- ripng_network_write (vty);
- /* RIPng default metric configuration */
- if (ripng->default_metric != RIPNG_DEFAULT_METRIC_DEFAULT)
- vty_out (vty, " default-metric %d%s",
- ripng->default_metric, VTY_NEWLINE);
- ripng_redistribute_write (vty);
-
- /* RIPng aggregate routes. */
- for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp))
- if (rp->info != NULL)
- vty_out (vty, " aggregate-address %s/%d%s",
- inet6_ntop (&rp->p.u.prefix6),
- rp->p.prefixlen,
- VTY_NEWLINE);
- /* RIPng static routes. */
- for (rp = route_top (ripng->route); rp; rp = route_next (rp))
- if (rp->info != NULL)
- vty_out (vty, " route %s/%d%s", inet6_ntop (&rp->p.u.prefix6),
- rp->p.prefixlen,
- VTY_NEWLINE);
- /* RIPng timers configuration. */
- if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT ||
- ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT ||
- ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT)
- {
- vty_out (vty, " timers basic %ld %ld %ld%s",
- ripng->update_time,
- ripng->timeout_time,
- ripng->garbage_time,
- VTY_NEWLINE);
- }
- write += config_write_distribute (vty);
- write += config_write_if_rmap (vty);
- write++;
- }
- return write;
- }
- /* RIPng node structure. */
- struct cmd_node cmd_ripng_node =
- {
- RIPNG_NODE,
- "%s(config-router)# ",
- 1,
- };
- void
- ripng_distribute_update (struct distribute *dist)
- {
- struct interface *ifp;
- struct ripng_interface *ri;
- struct access_list *alist;
- struct prefix_list *plist;
- if (! dist->ifname)
- return;
- ifp = if_lookup_by_name (dist->ifname);
- if (ifp == NULL)
- return;
- ri = ifp->info;
- if (dist->list[DISTRIBUTE_IN])
- {
- alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]);
- if (alist)
- ri->list[RIPNG_FILTER_IN] = alist;
- else
- ri->list[RIPNG_FILTER_IN] = NULL;
- }
- else
- ri->list[RIPNG_FILTER_IN] = NULL;
- if (dist->list[DISTRIBUTE_OUT])
- {
- alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]);
- if (alist)
- ri->list[RIPNG_FILTER_OUT] = alist;
- else
- ri->list[RIPNG_FILTER_OUT] = NULL;
- }
- else
- ri->list[RIPNG_FILTER_OUT] = NULL;
- if (dist->prefix[DISTRIBUTE_IN])
- {
- plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]);
- if (plist)
- ri->prefix[RIPNG_FILTER_IN] = plist;
- else
- ri->prefix[RIPNG_FILTER_IN] = NULL;
- }
- else
- ri->prefix[RIPNG_FILTER_IN] = NULL;
- if (dist->prefix[DISTRIBUTE_OUT])
- {
- plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]);
- if (plist)
- ri->prefix[RIPNG_FILTER_OUT] = plist;
- else
- ri->prefix[RIPNG_FILTER_OUT] = NULL;
- }
- else
- ri->prefix[RIPNG_FILTER_OUT] = NULL;
- }
- void
- ripng_distribute_update_interface (struct interface *ifp)
- {
- struct distribute *dist;
- dist = distribute_lookup (ifp->name);
- if (dist)
- ripng_distribute_update (dist);
- }
- /* Update all interface's distribute list. */
- void
- ripng_distribute_update_all ()
- {
- struct interface *ifp;
- listnode node;
- for (node = listhead (iflist); node; nextnode (node))
- {
- ifp = getdata (node);
- ripng_distribute_update_interface (ifp);
- }
- }
- void
- ripng_if_rmap_update (struct if_rmap *if_rmap)
- {
- struct interface *ifp;
- struct ripng_interface *ri;
- struct route_map *rmap;
- ifp = if_lookup_by_name (if_rmap->ifname);
- if (ifp == NULL)
- return;
- ri = ifp->info;
- if (if_rmap->routemap[IF_RMAP_IN])
- {
- rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]);
- if (rmap)
- ri->routemap[IF_RMAP_IN] = rmap;
- else
- ri->routemap[IF_RMAP_IN] = NULL;
- }
- else
- ri->routemap[RIPNG_FILTER_IN] = NULL;
- if (if_rmap->routemap[IF_RMAP_OUT])
- {
- rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]);
- if (rmap)
- ri->routemap[IF_RMAP_OUT] = rmap;
- else
- ri->routemap[IF_RMAP_OUT] = NULL;
- }
- else
- ri->routemap[RIPNG_FILTER_OUT] = NULL;
- }
- void
- ripng_if_rmap_update_interface (struct interface *ifp)
- {
- struct if_rmap *if_rmap;
- if_rmap = if_rmap_lookup (ifp->name);
- if (if_rmap)
- ripng_if_rmap_update (if_rmap);
- }
- void
- ripng_routemap_update_redistribute (void)
- {
- int i;
- if (ripng)
- {
- for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
- {
- if (ripng->route_map[i].name)
- ripng->route_map[i].map =
- route_map_lookup_by_name (ripng->route_map[i].name);
- }
- }
- }
- void
- ripng_routemap_update ()
- {
- struct interface *ifp;
- listnode node;
- for (node = listhead (iflist); node; nextnode (node))
- {
- ifp = getdata (node);
- ripng_if_rmap_update_interface (ifp);
- }
- ripng_routemap_update_redistribute ();
- }
- /* Initialize ripng structure and set commands. */
- void
- ripng_init ()
- {
- /* Randomize. */
- srand (time (NULL));
- /* Install RIPNG_NODE. */
- install_node (&cmd_ripng_node, ripng_config_write);
- /* Install ripng commands. */
- install_element (VIEW_NODE, &show_ipv6_ripng_cmd);
- install_element (ENABLE_NODE, &show_ipv6_ripng_cmd);
- install_element (CONFIG_NODE, &router_ripng_cmd);
- install_default (RIPNG_NODE);
- install_element (RIPNG_NODE, &ripng_route_cmd);
- install_element (RIPNG_NODE, &no_ripng_route_cmd);
- install_element (RIPNG_NODE, &ripng_aggregate_address_cmd);
- install_element (RIPNG_NODE, &no_ripng_aggregate_address_cmd);
- install_element (RIPNG_NODE, &ripng_default_metric_cmd);
- install_element (RIPNG_NODE, &no_ripng_default_metric_cmd);
- install_element (RIPNG_NODE, &no_ripng_default_metric_val_cmd);
- install_element (RIPNG_NODE, &ripng_timers_cmd);
- install_element (RIPNG_NODE, &no_ripng_timers_cmd);
- install_element (RIPNG_NODE, &ripng_default_information_originate_cmd);
- install_element (RIPNG_NODE, &no_ripng_default_information_originate_cmd);
- ripng_if_init ();
- ripng_debug_init ();
- /* Access list install. */
- access_list_init ();
- access_list_add_hook (ripng_distribute_update_all);
- access_list_delete_hook (ripng_distribute_update_all);
- /* Prefix list initialize.*/
- prefix_list_init ();
- prefix_list_add_hook (ripng_distribute_update_all);
- prefix_list_delete_hook (ripng_distribute_update_all);
- /* Distribute list install. */
- distribute_list_init (RIPNG_NODE);
- distribute_list_add_hook (ripng_distribute_update);
- distribute_list_delete_hook (ripng_distribute_update);
- /* Route-map for interface. */
- ripng_route_map_init ();
- route_map_add_hook (ripng_routemap_update);
- route_map_delete_hook (ripng_routemap_update);
- if_rmap_init ();
- if_rmap_hook_add (ripng_if_rmap_update);
- if_rmap_hook_delete (ripng_if_rmap_update);
- }