From a94434b69197e074569d7579126074e9cb7212a5 Mon Sep 17 00:00:00 2001 From: hasso Date: Sun, 25 May 2003 17:10:12 +0000 Subject: Ripngd part of 6Wind patch. --- ripngd/ripngd.c | 1200 ++++++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 875 insertions(+), 325 deletions(-) (limited to 'ripngd/ripngd.c') diff --git a/ripngd/ripngd.c b/ripngd/ripngd.c index e7cefaf0..a4d119dc 100644 --- a/ripngd/ripngd.c +++ b/ripngd/ripngd.c @@ -21,9 +21,6 @@ #include -/* For struct udphdr. */ -#include - #include "prefix.h" #include "filter.h" #include "log.h" @@ -42,8 +39,7 @@ #include "ripngd/ripngd.h" #include "ripngd/ripng_route.h" #include "ripngd/ripng_debug.h" - -#define min(a, b) ((a) < (b) ? (a) : (b)) +#include "ripngd/ripng_nexthop.h" /* RIPng structure which includes many parameters related to RIPng protocol. If ripng couldn't active or ripng doesn't configured, @@ -54,13 +50,11 @@ 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); +ripng_output_process (struct interface *, struct sockaddr_in6 *, int); int ripng_triggered_update (struct thread *); @@ -87,6 +81,12 @@ inet6_ntop (struct in6_addr *p) return buf; } +int +ripng_route_rte (struct ripng_info *rinfo) +{ + return (rinfo->type == ZEBRA_ROUTE_RIPNG && rinfo->sub_type == RIPNG_ROUTE_RTE); +} + /* Allocate new ripng information. */ struct ripng_info * ripng_info_new () @@ -175,12 +175,12 @@ ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, 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 */ + if (IS_RIPNG_DEBUG_SEND) { + if (to) + zlog_info ("send to %s", inet6_ntop (&to->sin6_addr)); + zlog_info (" send interface %s", ifp->name); + zlog_info (" send packet size %d", bufsize); + } memset (&addr, 0, sizeof (struct sockaddr_in6)); addr.sin6_family = AF_INET6; @@ -222,8 +222,13 @@ ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, ret = sendmsg (ripng->sock, &msg, 0); - if (ret < 0) - zlog_warn ("RIPng send fail on %s: %s", ifp->name, strerror (errno)); + if (ret < 0) { + if (to) + zlog_err ("RIPng send fail on %s to %s: %s", ifp->name, + inet6_ntop (&to->sin6_addr), strerror (errno)); + else + zlog_err ("RIPng send fail on %s: %s", ifp->name, strerror (errno)); + } return ret; } @@ -420,14 +425,6 @@ ripng_garbage_collect (struct thread *t) /* 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); @@ -455,9 +452,16 @@ ripng_timeout (struct thread *t) RIPNG_TIMER_ON (rinfo->t_garbage_collect, ripng_garbage_collect, ripng->garbage_time); + /* Delete this route from the kernel. */ + ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, + rinfo->ifindex); /* - The metric for the route is set to 16 (infinity). This causes the route to be removed from service. */ rinfo->metric = RIPNG_METRIC_INFINITY; + rinfo->flags &= ~RIPNG_RTF_FIB; + + /* Aggregate count decrement. */ + ripng_aggregate_decrement (rp, rinfo); /* - The route change flag is to indicate that this entry has been changed. */ @@ -479,12 +483,154 @@ ripng_timeout_update (struct ripng_info *rinfo) } } +int +ripng_incoming_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) +{ + struct distribute *dist; + struct access_list *alist; + struct prefix_list *plist; + + /* Input distribute-list filtering. */ + if (ri->list[RIPNG_FILTER_IN]) + { + if (access_list_apply (ri->list[RIPNG_FILTER_IN], + (struct prefix *) p) == FILTER_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by distribute in", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + if (ri->prefix[RIPNG_FILTER_IN]) + { + if (prefix_list_apply (ri->prefix[RIPNG_FILTER_IN], + (struct prefix *) p) == PREFIX_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by prefix-list in", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + + /* All interface filter check. */ + dist = distribute_lookup (NULL); + if (dist) + { + if (dist->list[DISTRIBUTE_IN]) + { + alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); + + if (alist) + { + if (access_list_apply (alist, + (struct prefix *) p) == FILTER_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by distribute in", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + } + if (dist->prefix[DISTRIBUTE_IN]) + { + plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); + + if (plist) + { + if (prefix_list_apply (plist, + (struct prefix *) p) == PREFIX_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by prefix-list in", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + } + } + return 0; +} + +int +ripng_outgoing_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) +{ + struct distribute *dist; + struct access_list *alist; + struct prefix_list *plist; + + 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 ("%s/%d is filtered by distribute out", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + 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 ("%s/%d is filtered by prefix-list out", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + + /* All interface filter check. */ + dist = distribute_lookup (NULL); + if (dist) + { + if (dist->list[DISTRIBUTE_OUT]) + { + alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); + + if (alist) + { + if (access_list_apply (alist, + (struct prefix *) p) == FILTER_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by distribute out", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + } + if (dist->prefix[DISTRIBUTE_OUT]) + { + plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); + + if (plist) + { + if (prefix_list_apply (plist, + (struct prefix *) p) == PREFIX_DENY) + { + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("%s/%d filtered by prefix-list out", + inet6_ntop (&p->prefix), p->prefixlen); + return -1; + } + } + } + } + return 0; +} + /* 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) { + int ret; struct prefix_ipv6 p; struct route_node *rp; struct ripng_info *rinfo; @@ -508,26 +654,9 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, /* 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; - } - } + ret = ripng_incoming_filter (&p, ri); + if (ret < 0) + return; /* Modify entry. */ if (ri->routemap[RIPNG_FILTER_IN]) @@ -536,7 +665,17 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, struct ripng_info newinfo; memset (&newinfo, 0, sizeof (struct ripng_info)); + newinfo.type = ZEBRA_ROUTE_RIPNG; + newinfo.sub_type = RIPNG_ROUTE_RTE; + if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) + newinfo.nexthop = ripng_nexthop->address; + else + newinfo.nexthop = from->sin6_addr; + newinfo.from = from->sin6_addr; + newinfo.ifindex = ifp->ifindex; newinfo.metric = rte->metric; + newinfo.metric_out = rte->metric; /* XXX */ + newinfo.tag = ntohs(rte->tag); /* XXX */ ret = route_map_apply (ri->routemap[RIPNG_FILTER_IN], (struct prefix *)&p, RMAP_RIPNG, &newinfo); @@ -549,9 +688,45 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, return; } - rte->metric = newinfo.metric; + /* Get back the object */ + if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { + if (! IPV6_ADDR_SAME(&newinfo.nexthop, &ripng_nexthop->address) ) { + /* the nexthop get changed by the routemap */ + if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) + ripng_nexthop->address = newinfo.nexthop; + else + ripng_nexthop->address = in6addr_any; + } + } else { + if (! IPV6_ADDR_SAME(&newinfo.nexthop, &from->sin6_addr) ) { + /* the nexthop get changed by the routemap */ + if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { + ripng_nexthop->flag = RIPNG_NEXTHOP_ADDRESS; + ripng_nexthop->address = newinfo.nexthop; + } + } + } + rte->tag = htons(newinfo.tag_out); /* XXX */ + rte->metric = newinfo.metric_out; /* XXX: the routemap uses the metric_out field */ } + /* Once the entry has been validated, update the metric by + * adding the cost of the network on wich the message + * arrived. If the result is greater than infinity, use infinity + * (RFC2453 Sec. 3.9.2) + **/ + + /* Zebra ripngd can handle offset-list in. */ + ret = ripng_offset_list_apply_in (&p, ifp, &rte->metric); + + /* If offset-list does not modify the metric use interface's + * one. */ + if (! ret) + rte->metric += ifp->metric; + + if (rte->metric > RIPNG_METRIC_INFINITY) + rte->metric = RIPNG_METRIC_INFINITY; + /* Set nexthop pointer. */ if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) nexthop = &ripng_nexthop->address; @@ -561,6 +736,23 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, /* Lookup RIPng routing table. */ rp = route_node_get (ripng->table, (struct prefix *) &p); + /* Sanity check */ + rinfo = rp->info; + if (rinfo) + { + /* Redistributed route check. */ + if (rinfo->type != ZEBRA_ROUTE_RIPNG + && rinfo->metric != RIPNG_METRIC_INFINITY) + return; + + /* Local static route. */ + if (rinfo->type == ZEBRA_ROUTE_RIPNG + && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || + (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) + && rinfo->metric != RIPNG_METRIC_INFINITY) + return; + } + if (rp->info == NULL) { /* Now, check to see whether there is already an explicit route @@ -638,17 +830,45 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, oldmetric = rinfo->metric; rinfo->metric = rte->metric; rinfo->tag = ntohs (rte->tag); + IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); + rinfo->ifindex = ifp->ifindex; - if (! IN6_ARE_ADDR_EQUAL (&rinfo->nexthop, nexthop)) + /* 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. */ + + if (oldmetric == RIPNG_METRIC_INFINITY && + rinfo->metric < RIPNG_METRIC_INFINITY) + { + rinfo->type = ZEBRA_ROUTE_RIPNG; + rinfo->sub_type = RIPNG_ROUTE_RTE; + + RIPNG_TIMER_OFF (rinfo->t_garbage_collect); + + if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) + IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); + + ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex); + rinfo->flags |= RIPNG_RTF_FIB; + + /* The aggregation counter needs to be updated because + the prefixes, which are into the gc, have been + removed from the aggregator (see ripng_timout). */ + ripng_aggregate_increment (rp, rinfo); + } + + /* Update nexthop and/or metric value. */ + if (oldmetric != RIPNG_METRIC_INFINITY) { 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); + if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) + 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. */ @@ -675,6 +895,12 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, /* - The metric for the route is set to 16 (infinity). This causes the route to be removed from service.*/ + ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); + rinfo->flags &= ~RIPNG_RTF_FIB; + + /* Aggregate count decrement. */ + ripng_aggregate_decrement (rp, rinfo); + /* - The route change flag is to indicate that this entry has been changed. */ /* - The output process is signalled to trigger a @@ -686,13 +912,6 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, { /* 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. */ @@ -703,7 +922,7 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, /* Add redistributed route to RIPng table. */ void ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, - unsigned int ifindex) + unsigned int ifindex, struct in6_addr *nexthop) { struct route_node *rp; struct ripng_info *rinfo; @@ -713,30 +932,89 @@ ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, return; if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) return; +#if defined (MUSICA) || defined (LINUX) + /* XXX As long as the RIPng redistribution is applied to all the connected + * routes, one needs to filter the ::/96 prefixes. + * However it could be a wanted case, it will be removed soon. + */ + if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || + (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) + return; +#endif /* MUSICA or LINUX */ rp = route_node_get (ripng->table, (struct prefix *) p); rinfo = rp->info; if (rinfo) { + if (rinfo->type == ZEBRA_ROUTE_CONNECT + && rinfo->sub_type == RIPNG_ROUTE_INTERFACE + && rinfo->metric != RIPNG_METRIC_INFINITY) { + route_unlock_node (rp); + return; + } + + /* Manually configured RIPng route check. + * They have the precedence on all the other entries. + **/ + if (rinfo->type == ZEBRA_ROUTE_RIPNG + && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || + (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) ) { + if (type != ZEBRA_ROUTE_RIPNG || ((sub_type != RIPNG_ROUTE_STATIC) && + (sub_type != RIPNG_ROUTE_DEFAULT))) { + route_unlock_node (rp); + return; + } + } + RIPNG_TIMER_OFF (rinfo->t_timeout); RIPNG_TIMER_OFF (rinfo->t_garbage_collect); + + /* Tells the other daemons about the deletion of + * this RIPng route + **/ + if (ripng_route_rte (rinfo)) + ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, + rinfo->metric); + + rp->info = NULL; + ripng_info_free (rinfo); + route_unlock_node (rp); + } - else - { - rinfo = ripng_info_new (); - ripng_aggregate_increment (rp, rinfo); - } + + rinfo = ripng_info_new (); rinfo->type = type; rinfo->sub_type = sub_type; rinfo->ifindex = ifindex; rinfo->metric = 1; - rinfo->flags |= RIPNG_RTF_FIB; - rinfo->rp = rp; + + if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) + rinfo->nexthop = *nexthop; + + rinfo->flags |= RIPNG_RTF_FIB; rp->info = rinfo; + + /* Aggregate check. */ + ripng_aggregate_increment (rp, rinfo); + + rinfo->flags |= RIPNG_RTF_CHANGED; + + if (IS_RIPNG_DEBUG_EVENT) { + if (!nexthop) + zlog_info ("Redistribute new prefix %s/%d on the interface %s", + inet6_ntop(&p->prefix), p->prefixlen, + ifindex2ifname(ifindex)); + else + zlog_info ("Redistribute new prefix %s/%d with nexthop %s on the interface %s", + inet6_ntop(&p->prefix), p->prefixlen, inet6_ntop(nexthop), + ifindex2ifname(ifindex)); + } + + ripng_event (RIPNG_TRIGGERED_UPDATE, 0); } /* Delete redistributed route to RIPng table. */ @@ -751,6 +1029,15 @@ ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p, return; if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) return; +#if defined (MUSICA) || defined (LINUX) + /* XXX As long as the RIPng redistribution is applied to all the connected + * routes, one needs to filter the ::/96 prefixes. + * However it could be a wanted case, it will be removed soon. + */ + if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || + (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) + return; +#endif /* MUSICA or LINUX */ rp = route_node_lookup (ripng->table, (struct prefix *) p); @@ -763,18 +1050,24 @@ ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p, && rinfo->sub_type == sub_type && rinfo->ifindex == ifindex) { - rp->info = NULL; - + /* Perform poisoned reverse. */ + rinfo->metric = RIPNG_METRIC_INFINITY; + RIPNG_TIMER_ON (rinfo->t_garbage_collect, + ripng_garbage_collect, ripng->garbage_time); RIPNG_TIMER_OFF (rinfo->t_timeout); - RIPNG_TIMER_OFF (rinfo->t_garbage_collect); + + /* Aggregate count decrement. */ + ripng_aggregate_decrement (rp, rinfo); + + rinfo->flags |= RIPNG_RTF_CHANGED; - ripng_info_free (rinfo); + if (IS_RIPNG_DEBUG_EVENT) + zlog_info ("Poisone %s/%d on the interface %s with an infinity metric [delete]", + inet6_ntop(&p->prefix), p->prefixlen, + ifindex2ifname(ifindex)); - route_unlock_node (rp); + ripng_event (RIPNG_TRIGGERED_UPDATE, 0); } - - /* For unlock route_node_lookup (). */ - route_unlock_node (rp); } } @@ -785,19 +1078,35 @@ ripng_redistribute_withdraw (int type) struct route_node *rp; struct ripng_info *rinfo; + if (!ripng) + return; + for (rp = route_top (ripng->table); rp; rp = route_next (rp)) if ((rinfo = rp->info) != NULL) { - if (rinfo->type == type) + if ((rinfo->type == type) + && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) { - rp->info = NULL; - + /* Perform poisoned reverse. */ + rinfo->metric = RIPNG_METRIC_INFINITY; + RIPNG_TIMER_ON (rinfo->t_garbage_collect, + ripng_garbage_collect, ripng->garbage_time); RIPNG_TIMER_OFF (rinfo->t_timeout); - RIPNG_TIMER_OFF (rinfo->t_garbage_collect); - ripng_info_free (rinfo); + /* Aggregate count decrement. */ + ripng_aggregate_decrement (rp, rinfo); + + rinfo->flags |= RIPNG_RTF_CHANGED; + + if (IS_RIPNG_DEBUG_EVENT) { + struct prefix_ipv6 *p = (struct prefix_ipv6 *) &rp->p; - route_unlock_node (rp); + zlog_info ("Poisone %s/%d on the interface %s [withdraw]", + inet6_ntop(&p->prefix), p->prefixlen, + ifindex2ifname(rinfo->ifindex)); + } + + ripng_event (RIPNG_TRIGGERED_UPDATE, 0); } } } @@ -818,6 +1127,7 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("RIPng packet comes from non RIPng port %d from %s", ntohs (from->sin6_port), inet6_ntop (&from->sin6_addr)); + ripng_peer_bad_packet (from); return; } @@ -828,6 +1138,7 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("RIPng packet comes from non link local address %s", inet6_ntop (&from->sin6_addr)); + ripng_peer_bad_packet (from); return; } @@ -840,6 +1151,7 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("RIPng packet comes from my own link local address %s", inet6_ntop (&from->sin6_addr)); + ripng_peer_bad_packet (from); return; } @@ -851,9 +1163,13 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("RIPng packet comes with non 255 hop count %d from %s", hoplimit, inet6_ntop (&from->sin6_addr)); + ripng_peer_bad_packet (from); return; } + /* Update RIPng peer. */ + ripng_peer_update (from, packet->version); + /* Reset nexthop. */ memset (&nexthop, 0, sizeof (struct ripng_nexthop)); nexthop.flag = RIPNG_NEXTHOP_UNSPEC; @@ -881,18 +1197,21 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("Destination prefix is a multicast address %s/%d [%d]", inet6_ntop (&rte->addr), rte->prefixlen, rte->metric); + ripng_peer_bad_route (from); 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); + ripng_peer_bad_route (from); 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); + ripng_peer_bad_route (from); continue; } @@ -903,6 +1222,7 @@ ripng_response_process (struct ripng_packet *packet, int size, zlog_warn ("Invalid prefix length %s/%d from %s%%%s", inet6_ntop (&rte->addr), rte->prefixlen, inet6_ntop (&from->sin6_addr), ifp->name); + ripng_peer_bad_route (from); continue; } @@ -911,13 +1231,13 @@ ripng_response_process (struct ripng_packet *packet, int size, { zlog_warn ("Invalid metric %d from %s%%%s", rte->metric, inet6_ntop (&from->sin6_addr), ifp->name); + ripng_peer_bad_route (from); continue; } - /* Metric calculation. */ - rte->metric += ifp->metric; - if (rte->metric > RIPNG_METRIC_INFINITY) - rte->metric = RIPNG_METRIC_INFINITY; + /* Vincent: XXX Should we compute the direclty reachable nexthop + * for our RIPng network ? + **/ /* Routing table updates. */ ripng_route_process (rte, from, &nexthop, ifp); @@ -936,6 +1256,10 @@ ripng_request_process (struct ripng_packet *packet,int size, struct ripng_info *rinfo; struct ripng_interface *ri; + /* Does not reponse to the requests on the loopback interfaces */ + if (if_is_loopback (ifp)) + return; + /* Check RIPng process is enabled on this interface. */ ri = ifp->info; if (! ri->running) @@ -945,6 +1269,9 @@ ripng_request_process (struct ripng_packet *packet,int size, if (ri->passive) return; + /* RIPng peer update. */ + ripng_peer_update (from, packet->version); + lim = ((caddr_t) packet) + size; rte = packet->rte; @@ -965,7 +1292,7 @@ ripng_request_process (struct ripng_packet *packet,int size, rte->metric == RIPNG_METRIC_INFINITY) { /* All route with split horizon */ - ripng_output_process (ifp, from, ripng_all_route, ripng_split_horizon); + ripng_output_process (ifp, from, ripng_all_route); } else { @@ -1044,6 +1371,7 @@ ripng_read (struct thread *thread) { zlog_warn ("RIPng invalid packet size %d from %s", len, inet6_ntop (&from.sin6_addr)); + ripng_peer_bad_packet (&from); return 0; } @@ -1072,6 +1400,7 @@ ripng_read (struct thread *thread) { zlog_warn ("RIPng packet version %d doesn't fit to my version %d", packet->version, ripng->version); + ripng_peer_bad_packet (&from); return 0; } @@ -1086,6 +1415,7 @@ ripng_read (struct thread *thread) break; default: zlog_warn ("Invalid RIPng command %d", packet->command); + ripng_peer_bad_packet (&from); break; } return 0; @@ -1148,7 +1478,7 @@ ripng_update (struct thread *t) } #endif /* RIPNG_ADVANCED */ - ripng_output_process (ifp, NULL, ripng_all_route, ripng_split_horizon); + ripng_output_process (ifp, NULL, ripng_all_route); } /* Triggered updates may be suppressed if a regular update is due by @@ -1221,8 +1551,7 @@ ripng_triggered_update (struct thread *t) if (ri->passive) continue; - ripng_output_process (ifp, NULL, ripng_changed_route, - ripng_split_horizon); + ripng_output_process (ifp, NULL, ripng_changed_route); } /* Once all of the triggered updates have been generated, the route @@ -1245,7 +1574,7 @@ ripng_triggered_update (struct thread *t) 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) + struct in6_addr *nexthop, u_int16_t tag, u_char metric) { /* RIPng packet header. */ if (num == 0) @@ -1256,9 +1585,15 @@ ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, } /* Write routing table entry. */ - stream_write (s, (caddr_t) &p->prefix, sizeof (struct in6_addr)); + if (!nexthop) + stream_write (s, (caddr_t) &p->prefix, sizeof (struct in6_addr)); + else + stream_write (s, (caddr_t) nexthop, sizeof (struct in6_addr)); stream_putw (s, tag); - stream_putc (s, p->prefixlen); + if (p) + stream_putc (s, p->prefixlen); + else + stream_putc (s, 0); stream_putc (s, metric); return ++num; @@ -1267,56 +1602,53 @@ ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, /* Send RESPONSE message to specified destination. */ void ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, - int route_type, int split_horizon) + int route_type) { 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; + struct list * ripng_rte_list; - rtemax = (min (mtu, RIPNG_MAX_PACKET_SIZE) - - IPV6_HDRLEN - - sizeof (struct udphdr) - - sizeof (struct ripng_packet) + - sizeof (struct rte)) / sizeof (struct rte); + if (IS_RIPNG_DEBUG_EVENT) { + if (to) + zlog_info ("RIPng update routes to neighbor %s", + inet6_ntop(&to->sin6_addr)); + else + zlog_info ("RIPng update routes on interface %s", ifp->name); + } -#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; - + + ripng_rte_list = ripng_rte_new(); + for (rp = route_top (ripng->table); rp; rp = route_next (rp)) { if ((rinfo = rp->info) != NULL && rinfo->suppress == 0) { + /* If no route-map are applied, the RTE will be these following + * informations. + */ p = (struct prefix_ipv6 *) &rp->p; - metric = rinfo->metric; + rinfo->metric_out = rinfo->metric; + rinfo->tag_out = rinfo->tag; + memset(&rinfo->nexthop_out, 0, sizeof(rinfo->nexthop_out)); + /* In order to avoid some local loops, + * if the RIPng route has a nexthop via this interface, keep the nexthop, + * otherwise set it to 0. The nexthop should not be propagated + * beyond the local broadcast/multicast area in order + * to avoid an IGP multi-level recursive look-up. + */ + if (rinfo->ifindex == ifp->ifindex) + rinfo->nexthop_out = rinfo->nexthop; + + /* Apply output filters. */ + ret = ripng_outgoing_filter (p, ri); + if (ret < 0) + continue; /* Changed route only output. */ if (route_type == ripng_changed_route && @@ -1324,164 +1656,130 @@ ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, 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; - } - } + if (ri->split_horizon == RIPNG_SPLIT_HORIZON) + { + /* We perform split horizon for RIPng routes. */ + if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && + rinfo->ifindex == ifp->ifindex) + continue; + } /* Preparation for route-map. */ - metric_set = 0; + rinfo->metric_set = 0; + /* nexthop_out, + * metric_out + * and tag_out are already initialized. + */ - /* Route-map */ + /* Interface 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); + rinfo); 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; + continue; } - metric = newinfo.metric; - metric_set = newinfo.metric_set; } - /* When the interface route-map does not set metric */ - if (! metric_set) + /* Redistribute route-map. */ + if (ripng->route_map[rinfo->type].name) { - /* and the redistribute route-map is set. */ - if (ripng->route_map[rinfo->type].name) + int ret; + + ret = route_map_apply (ripng->route_map[rinfo->type].map, + (struct prefix *) p, RMAP_RIPNG, + &rinfo); + + if (ret == RMAP_DENYMATCH) { - 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; + if (IS_RIPNG_DEBUG_PACKET) + zlog_info ("RIPng %s/%d is filtered by route-map", + inet6_ntop (&p->prefix), p->prefixlen); + continue; } + } - /* When the redistribute route-map does not set metric. */ - if (! metric_set) + /* When the route-map does not set metric. */ + if (! rinfo->metric_set) + { + /* If the redistribute metric is set. */ + if (ripng->route_map[rinfo->type].metric_config + && rinfo->metric != RIPNG_METRIC_INFINITY) + { + rinfo->metric_out = ripng->route_map[rinfo->type].metric; + } + else { - /* If the redistribute metric is set. */ - if (ripng->route_map[rinfo->type].metric_config + /* 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->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; - } + rinfo->metric_out = 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); - } + /* Apply offset-list */ + if (rinfo->metric_out != RIPNG_METRIC_INFINITY) + ripng_offset_list_apply_out (p, ifp, &rinfo->metric_out); + + if (rinfo->metric_out > RIPNG_METRIC_INFINITY) + rinfo->metric_out = RIPNG_METRIC_INFINITY; + + /* Perform split-horizon with poisoned reverse + * for RIPng routes. + **/ + if (ri->split_horizon == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { + if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && + rinfo->ifindex == ifp->ifindex) + rinfo->metric_out = RIPNG_METRIC_INFINITY; + } + + /* Add RTE to the list */ + ripng_rte_add(ripng_rte_list, p, rinfo, NULL); } + + /* Process the aggregated RTE entry */ if ((aggregate = rp->aggregate) != NULL && aggregate->count > 0 && aggregate->suppress == 0) { + /* If no route-map are applied, the RTE will be these following + * informations. + */ p = (struct prefix_ipv6 *) &rp->p; - metric = aggregate->metric; + aggregate->metric_set = 0; + aggregate->metric_out = aggregate->metric; + aggregate->tag_out = aggregate->tag; + memset(&aggregate->nexthop_out, 0, sizeof(aggregate->nexthop_out)); /* 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; - } - } + ret = ripng_outgoing_filter (p, ri); + if (ret < 0) + continue; - /* Route-map */ + /* Interface route-map */ if (ri->routemap[RIPNG_FILTER_OUT]) { int ret; struct ripng_info newinfo; + /* let's cast the aggregate structure to ripng_info */ memset (&newinfo, 0, sizeof (struct ripng_info)); - newinfo.metric = metric; + /* the nexthop is :: */ + newinfo.metric = aggregate->metric; + newinfo.metric_out = aggregate->metric_out; + newinfo.tag = aggregate->tag; + newinfo.tag_out = aggregate->tag_out; ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], (struct prefix *) p, RMAP_RIPNG, @@ -1492,45 +1790,40 @@ ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, if (IS_RIPNG_DEBUG_PACKET) zlog_info ("RIPng %s/%d is filtered by route-map out", inet6_ntop (&p->prefix), p->prefixlen); - return; + continue; } - metric = newinfo.metric; + aggregate->metric_out = newinfo.metric_out; + aggregate->tag_out = newinfo.tag_out; + if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) + aggregate->nexthop_out = newinfo.nexthop_out; } + /* There is no redistribute routemap for the aggregated RTE */ + /* Changed route only output. */ + /* XXX, vincent, in order to increase time convergence, + * it should be announced if a child has changed. + */ 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); - } + /* Apply offset-list */ + if (aggregate->metric_out != RIPNG_METRIC_INFINITY) + ripng_offset_list_apply_out (p, ifp, &aggregate->metric_out); + + if (aggregate->metric_out > RIPNG_METRIC_INFINITY) + aggregate->metric_out = RIPNG_METRIC_INFINITY; + + /* Add RTE to the list */ + ripng_rte_add(ripng_rte_list, p, NULL, aggregate); } } - - /* 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); - } + /* Flush the list */ + ripng_rte_send(ripng_rte_list, ifp, to); + ripng_rte_free(ripng_rte_list); } /* Create new RIPng instance and set it to global variable. */ @@ -1541,7 +1834,7 @@ ripng_create () assert (ripng == NULL); /* Allocaste RIPng instance. */ - ripng = XMALLOC (0, sizeof (struct ripng)); + ripng = XMALLOC (MTYPE_RIPNG, sizeof (struct ripng)); memset (ripng, 0, sizeof (struct ripng)); /* Default version and timer values. */ @@ -1572,13 +1865,21 @@ ripng_create () return 0; } -/* Sned RIPng request to the interface. */ +/* Send RIPng request to the interface. */ int ripng_request (struct interface *ifp) { struct rte *rte; struct ripng_packet ripng_packet; + /* In default ripd doesn't send RIP_REQUEST to the loopback interface. */ + if (if_is_loopback(ifp)) + return 0; + + /* If interface is down, don't send RIP packet. */ + if (! if_is_up (ifp)) + return 0; + if (IS_RIPNG_DEBUG_EVENT) zlog_info ("RIPng send request to %s", ifp->name); @@ -1592,22 +1893,6 @@ ripng_request (struct interface *ifp) 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) @@ -1618,7 +1903,6 @@ ripng_update_jitter (int time) void ripng_event (enum ripng_event event, int sock) { - int ripng_request_all (struct thread *); int jitter = 0; switch (event) @@ -1672,14 +1956,6 @@ struct { 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) @@ -1709,6 +1985,40 @@ ripng_vty_out_uptime (struct vty *vty, struct ripng_info *rinfo) } } +char * +ripng_route_subtype_print (struct ripng_info *rinfo) +{ + static char str[3]; + memset(str, 0, 3); + + if (rinfo->suppress) + strcat(str, "S"); + + switch (rinfo->sub_type) + { + case RIPNG_ROUTE_RTE: + strcat(str, "n"); + break; + case RIPNG_ROUTE_STATIC: + strcat(str, "s"); + break; + case RIPNG_ROUTE_DEFAULT: + strcat(str, "d"); + break; + case RIPNG_ROUTE_REDISTRIBUTE: + strcat(str, "r"); + break; + case RIPNG_ROUTE_INTERFACE: + strcat(str, "i"); + break; + default: + strcat(str, "?"); + break; + } + + return str; +} + DEFUN (show_ipv6_ripng, show_ipv6_ripng_cmd, "show ipv6 ripng", @@ -1722,10 +2032,16 @@ DEFUN (show_ipv6_ripng, struct prefix_ipv6 *p; int len; + if (! ripng) + return CMD_SUCCESS; + /* Header of display. */ - vty_out (vty, "%sCodes: R - RIPng%s%s" - " Network " - "Next Hop If Met Tag Time%s", VTY_NEWLINE, + vty_out (vty, "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP%s" + "Sub-codes:%s" + " (n) - normal, (s) - static, (d) - default, (r) - redistribute,%s" + " (i) - interface, (a/S) - aggregated/Suppressed%s%s" + " Network Next Hop Via Metric Tag Time%s", + VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE); for (rp = route_top (ripng->table); rp; rp = route_next (rp)) @@ -1735,20 +2051,18 @@ DEFUN (show_ipv6_ripng, p = (struct prefix_ipv6 *) &rp->p; #ifdef DEBUG - len = vty_out (vty, "Ra %d/%d %s/%d ", + len = vty_out (vty, "R(a) %d/%d %s/%d ", aggregate->count, aggregate->suppress, inet6_ntop (&p->prefix), p->prefixlen); #else - len = vty_out (vty, "Ra %s/%d ", + len = vty_out (vty, "R(a) %s/%d ", inet6_ntop (&p->prefix), p->prefixlen); #endif /* DEBUG */ + vty_out (vty, "%s", VTY_NEWLINE); + vty_out (vty, "%*s", 18, " "); - len = 37 - len; - if (len > 0) - vty_out (vty, "%*s", len, " "); - - vty_out (vty, "%*s", 26, " "); - vty_out (vty, "%4d %3d%s", aggregate->metric, + vty_out (vty, "%*s", 28, " "); + vty_out (vty, "self %2d %3d%s", aggregate->metric, aggregate->tag, VTY_NEWLINE); } @@ -1758,32 +2072,54 @@ DEFUN (show_ipv6_ripng, p = (struct prefix_ipv6 *) &rp->p; #ifdef DEBUG - len = vty_out (vty, "%s%s 0/%d %s/%d ", + len = vty_out (vty, "%s(%s) 0/%d %s/%d ", route_info[rinfo->type].str, - rinfo->suppress ? "s" : " ", + ripng_route_subtype_print(rinfo), rinfo->suppress, inet6_ntop (&p->prefix), p->prefixlen); #else - len = vty_out (vty, "%s%s %s/%d ", + len = vty_out (vty, "%s(%s) %s/%d ", route_info[rinfo->type].str, - rinfo->suppress ? "s" : " ", + ripng_route_subtype_print(rinfo), inet6_ntop (&p->prefix), p->prefixlen); #endif /* DEBUG */ - len = 37 - len; + vty_out (vty, "%s", VTY_NEWLINE); + vty_out (vty, "%*s", 18, " "); + len = vty_out (vty, "%s", inet6_ntop (&rinfo->nexthop)); + + len = 28 - len; if (len > 0) - vty_out (vty, "%*s", len, " "); + len = vty_out (vty, "%*s", len, " "); - len = vty_out (vty, "%s", inet6_ntop (&rinfo->nexthop)); + /* from */ + if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && + (rinfo->sub_type == RIPNG_ROUTE_RTE)) + { + len = vty_out (vty, "%s", ifindex2ifname(rinfo->ifindex)); + } else if (rinfo->metric == RIPNG_METRIC_INFINITY) + { + len = vty_out (vty, "kill"); + } else + len = vty_out (vty, "self"); - len = 26 - len; + len = 9 - len; if (len > 0) vty_out (vty, "%*s", len, " "); - vty_out (vty, "%2d %2d %3d ", - rinfo->ifindex, rinfo->metric, rinfo->tag); + vty_out (vty, " %2d %3d ", + rinfo->metric, rinfo->tag); - if (rinfo->sub_type == RIPNG_ROUTE_RTE) + /* time */ + if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && + (rinfo->sub_type == RIPNG_ROUTE_RTE)) + { + /* RTE from remote RIP routers */ ripng_vty_out_uptime (vty, rinfo); + } else if (rinfo->metric == RIPNG_METRIC_INFINITY) + { + /* poisonous reversed routes (gc) */ + ripng_vty_out_uptime (vty, rinfo); + } vty_out (vty, "%s", VTY_NEWLINE); } @@ -1792,6 +2128,88 @@ DEFUN (show_ipv6_ripng, return CMD_SUCCESS; } +/* Return next event time. */ +static int +ripng_next_thread_timer (struct thread *thread) +{ + struct timeval timer_now; + + gettimeofday (&timer_now, NULL); + + return thread->u.sands.tv_sec - timer_now.tv_sec; +} + +DEFUN (show_ipv6_ripng_status, + show_ipv6_ripng_status_cmd, + "show ipv6 ripng status", + SHOW_STR + IP_STR + "Show RIPng routes\n" + "IPv6 routing protocol process parameters and statistics\n") +{ + listnode node; + int ripng_network_write (struct vty *, int); + void ripng_redistribute_write (struct vty *, int); + + if (! ripng) + return CMD_SUCCESS; + + vty_out (vty, "Routing Protocol is \"RIPng\"%s", VTY_NEWLINE); + vty_out (vty, " Sending updates every %ld seconds with +/-50%%,", + ripng->update_time); + vty_out (vty, " next due in %d seconds%s", + ripng_next_thread_timer (ripng->t_update), + VTY_NEWLINE); + vty_out (vty, " Timeout after %ld seconds,", ripng->timeout_time); + vty_out (vty, " garbage collect after %ld seconds%s", ripng->garbage_time, + VTY_NEWLINE); + + /* Filtering status show. */ + config_show_distribute (vty); + + /* Default metric information. */ + vty_out (vty, " Default redistribution metric is %d%s", + ripng->default_metric, VTY_NEWLINE); + + /* Redistribute information. */ + vty_out (vty, " Redistributing:"); + ripng_redistribute_write (vty, 0); + vty_out (vty, "%s", VTY_NEWLINE); + + vty_out (vty, " Default version control: send version %d,", ripng->version); + vty_out (vty, " receive version %d %s", ripng->version, + VTY_NEWLINE); + + vty_out (vty, " Interface Send Recv%s", VTY_NEWLINE); + + for (node = listhead (iflist); node; node = nextnode (node)) + { + struct ripng_interface *ri; + struct interface *ifp; + + ifp = getdata (node); + ri = ifp->info; + + if (ri->enable_network || ri->enable_interface) + { + + vty_out (vty, " %-17s%-3d %-3d%s", ifp->name, + ripng->version, + ripng->version, + VTY_NEWLINE); + } + } + + vty_out (vty, " Routing for Networks:%s", VTY_NEWLINE); + ripng_network_write (vty, 0); + + vty_out (vty, " Routing Information Sources:%s", VTY_NEWLINE); + vty_out (vty, " Gateway BadPackets BadRoutes Distance Last Update%s", VTY_NEWLINE); + ripng_peer_display (vty); + + return CMD_SUCCESS; +} + DEFUN (router_ripng, router_ripng_cmd, "router ripng", @@ -1817,6 +2235,18 @@ DEFUN (router_ripng, return CMD_SUCCESS; } +DEFUN (no_router_ripng, + no_router_ripng_cmd, + "no router ripng", + NO_STR + "Enable a routing process\n" + "Make RIPng instance command\n") +{ + if(ripng) + ripng_clean(); + return CMD_SUCCESS; +} + DEFUN (ripng_route, ripng_route_cmd, "route IPV6ADDR", @@ -1844,7 +2274,7 @@ DEFUN (ripng_route, } rp->info = (void *)1; - ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); + ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0, NULL); return CMD_SUCCESS; } @@ -2150,6 +2580,15 @@ DEFUN (no_ripng_timers, return CMD_SUCCESS; } +ALIAS (no_ripng_timers, + no_ripng_timers_val_cmd, + "no timers basic <0-65535> <0-65535> <0-65535>", + NO_STR + "RIPng timers setup\n" + "Basic timer\n" + "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") DEFUN (show_ipv6_protocols, show_ipv6_protocols_cmd, "show ipv6 protocols", @@ -2186,10 +2625,12 @@ DEFUN (ripng_default_information_originate, { struct prefix_ipv6 p; - ripng->default_information = 1; + if (! ripng ->default_information) { + ripng->default_information = 1; - str2prefix_ipv6 ("::/0", &p); - ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); + str2prefix_ipv6 ("::/0", &p); + ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0, NULL); + } return CMD_SUCCESS; } @@ -2203,10 +2644,12 @@ DEFUN (no_ripng_default_information_originate, { struct prefix_ipv6 p; - ripng->default_information = 0; + if (ripng->default_information) { + ripng->default_information = 0; - str2prefix_ipv6 ("::/0", &p); - ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); + str2prefix_ipv6 ("::/0", &p); + ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0); + } return CMD_SUCCESS; } @@ -2215,8 +2658,8 @@ DEFUN (no_ripng_default_information_originate, int ripng_config_write (struct vty *vty) { - int ripng_network_write (struct vty *); - void ripng_redistribute_write (struct vty *); + int ripng_network_write (struct vty *, int); + void ripng_redistribute_write (struct vty *, int); int write = 0; struct route_node *rp; @@ -2229,14 +2672,17 @@ ripng_config_write (struct vty *vty) if (ripng->default_information) vty_out (vty, " default-information originate%s", VTY_NEWLINE); - ripng_network_write (vty); + ripng_network_write (vty, 1); /* 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_redistribute_write (vty, 1); + + /* RIP offset-list configuration. */ + config_write_ripng_offset_list (vty); /* RIPng aggregate routes. */ for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) @@ -2355,6 +2801,7 @@ ripng_distribute_update (struct distribute *dist) else ri->prefix[RIPNG_FILTER_OUT] = NULL; } + void ripng_distribute_update_interface (struct interface *ifp) { @@ -2378,6 +2825,103 @@ ripng_distribute_update_all () ripng_distribute_update_interface (ifp); } } + +/* delete all the added ripng routes. */ +void +ripng_clean() +{ + int i; + struct route_node *rp; + struct ripng_info *rinfo; + + if (ripng) { + /* Clear RIPng routes */ + 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->metric); + + RIPNG_TIMER_OFF (rinfo->t_timeout); + RIPNG_TIMER_OFF (rinfo->t_garbage_collect); + + rp->info = NULL; + route_unlock_node (rp); + + ripng_info_free(rinfo); + } + } + + /* Cancel the RIPng timers */ + RIPNG_TIMER_OFF (ripng->t_update); + RIPNG_TIMER_OFF (ripng->t_triggered_update); + RIPNG_TIMER_OFF (ripng->t_triggered_interval); + + /* Cancel the read thread */ + if (ripng->t_read) { + thread_cancel (ripng->t_read); + ripng->t_read = NULL; + } + + /* Close the RIPng socket */ + if (ripng->sock >= 0) { + close(ripng->sock); + ripng->sock = -1; + } + + /* Static RIPng route configuration. */ + for (rp = route_top (ripng->route); rp; rp = route_next (rp)) + if (rp->info) { + rp->info = NULL; + route_unlock_node (rp); + } + + /* RIPng aggregated prefixes */ + for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) + if (rp->info) { + rp->info = NULL; + route_unlock_node (rp); + } + + for (i = 0; i < ZEBRA_ROUTE_MAX; i++) + if (ripng->route_map[i].name) + free (ripng->route_map[i].name); + + XFREE (MTYPE_ROUTE_TABLE, ripng->table); + XFREE (MTYPE_ROUTE_TABLE, ripng->route); + XFREE (MTYPE_ROUTE_TABLE, ripng->aggregate); + + XFREE (MTYPE_RIPNG, ripng); + ripng = NULL; + } /* if (ripng) */ + + ripng_clean_network(); + ripng_passive_interface_clean (); + ripng_offset_clean (); + ripng_interface_clean (); + ripng_redistribute_clean (); +} + +/* Reset all values to the default settings. */ +void +ripng_reset () +{ + /* Call ripd related reset functions. */ + ripng_debug_reset (); + ripng_route_map_reset (); + + /* Call library reset functions. */ + vty_reset (); + access_list_reset (); + prefix_list_reset (); + + distribute_list_reset (); + + ripng_interface_reset (); + + ripng_zclient_reset (); +} void ripng_if_rmap_update (struct if_rmap *if_rmap) @@ -2468,10 +3012,13 @@ ripng_init () /* Install ripng commands. */ install_element (VIEW_NODE, &show_ipv6_ripng_cmd); + install_element (VIEW_NODE, &show_ipv6_ripng_status_cmd); install_element (ENABLE_NODE, &show_ipv6_ripng_cmd); + install_element (ENABLE_NODE, &show_ipv6_ripng_status_cmd); install_element (CONFIG_NODE, &router_ripng_cmd); + install_element (CONFIG_NODE, &no_router_ripng_cmd); install_default (RIPNG_NODE); install_element (RIPNG_NODE, &ripng_route_cmd); @@ -2485,6 +3032,7 @@ ripng_init () install_element (RIPNG_NODE, &ripng_timers_cmd); install_element (RIPNG_NODE, &no_ripng_timers_cmd); + install_element (RIPNG_NODE, &no_ripng_timers_val_cmd); #if 0 install_element (RIPNG_NODE, &ripng_update_timer_cmd); install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); @@ -2517,6 +3065,8 @@ ripng_init () /* Route-map for interface. */ ripng_route_map_init (); + ripng_offset_init (); + route_map_add_hook (ripng_routemap_update); route_map_delete_hook (ripng_routemap_update); -- cgit v1.2.1