ospf6_abr.c
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上传日期:2009-11-15
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文件大小:26k
- /*
- * Area Border Router function.
- * Copyright (C) 2004 Yasuhiro Ohara
- *
- * 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>
- #include "log.h"
- #include "prefix.h"
- #include "table.h"
- #include "vty.h"
- #include "linklist.h"
- #include "command.h"
- #include "thread.h"
- #include "plist.h"
- #include "filter.h"
- #include "ospf6_proto.h"
- #include "ospf6_route.h"
- #include "ospf6_lsa.h"
- #include "ospf6_route.h"
- #include "ospf6_lsdb.h"
- #include "ospf6_message.h"
- #include "ospf6_top.h"
- #include "ospf6_area.h"
- #include "ospf6_interface.h"
- #include "ospf6_neighbor.h"
- #include "ospf6_flood.h"
- #include "ospf6_intra.h"
- #include "ospf6_abr.h"
- #include "ospf6d.h"
- unsigned char conf_debug_ospf6_abr;
- int
- ospf6_is_router_abr (struct ospf6 *o)
- {
- listnode node;
- struct ospf6_area *oa;
- int area_count = 0;
- for (node = listhead (o->area_list); node; nextnode (node))
- {
- oa = OSPF6_AREA (getdata (node));
- if (IS_AREA_ENABLED (oa))
- area_count++;
- }
- if (area_count > 1)
- return 1;
- return 0;
- }
- void
- ospf6_abr_enable_area (struct ospf6_area *area)
- {
- struct ospf6_area *oa;
- struct ospf6_route *ro;
- listnode node;
- for (node = listhead (area->ospf6->area_list); node; nextnode (node))
- {
- oa = OSPF6_AREA (getdata (node));
- /* update B bit for each area */
- OSPF6_ROUTER_LSA_SCHEDULE (oa);
- /* install other area's configured address range */
- if (oa != area)
- {
- for (ro = ospf6_route_head (oa->range_table); ro;
- ro = ospf6_route_next (ro))
- {
- if (CHECK_FLAG (ro->flag, OSPF6_ROUTE_ACTIVE_SUMMARY))
- ospf6_abr_originate_summary_to_area (ro, area);
- }
- }
- }
- /* install calculated routes to border routers */
- for (ro = ospf6_route_head (area->ospf6->brouter_table); ro;
- ro = ospf6_route_next (ro))
- ospf6_abr_originate_summary_to_area (ro, area);
- /* install calculated routes to network (may be rejected by ranges) */
- for (ro = ospf6_route_head (area->ospf6->route_table); ro;
- ro = ospf6_route_next (ro))
- ospf6_abr_originate_summary_to_area (ro, area);
- }
- void
- ospf6_abr_disable_area (struct ospf6_area *area)
- {
- struct ospf6_area *oa;
- struct ospf6_route *ro;
- struct ospf6_lsa *old;
- listnode node;
- /* Withdraw all summary prefixes previously originated */
- for (ro = ospf6_route_head (area->summary_prefix); ro;
- ro = ospf6_route_next (ro))
- {
- old = ospf6_lsdb_lookup (ro->path.origin.type, ro->path.origin.id,
- area->ospf6->router_id, area->lsdb);
- if (old)
- ospf6_lsa_purge (old);
- ospf6_route_remove (ro, area->summary_prefix);
- }
- /* Withdraw all summary router-routes previously originated */
- for (ro = ospf6_route_head (area->summary_router); ro;
- ro = ospf6_route_next (ro))
- {
- old = ospf6_lsdb_lookup (ro->path.origin.type, ro->path.origin.id,
- area->ospf6->router_id, area->lsdb);
- if (old)
- ospf6_lsa_purge (old);
- ospf6_route_remove (ro, area->summary_router);
- }
- /* Schedule Router-LSA for each area (ABR status may change) */
- for (node = listhead (area->ospf6->area_list); node; nextnode (node))
- {
- oa = OSPF6_AREA (getdata (node));
- /* update B bit for each area */
- OSPF6_ROUTER_LSA_SCHEDULE (oa);
- }
- }
- /* RFC 2328 12.4.3. Summary-LSAs */
- void
- ospf6_abr_originate_summary_to_area (struct ospf6_route *route,
- struct ospf6_area *area)
- {
- struct ospf6_lsa *lsa, *old = NULL;
- struct ospf6_interface *oi;
- struct ospf6_route *summary, *range = NULL;
- struct ospf6_area *route_area;
- char buffer[OSPF6_MAX_LSASIZE];
- struct ospf6_lsa_header *lsa_header;
- caddr_t p;
- struct ospf6_inter_prefix_lsa *prefix_lsa;
- struct ospf6_inter_router_lsa *router_lsa;
- struct ospf6_route_table *summary_table = NULL;
- u_int16_t type;
- char buf[64];
- int is_debug = 0;
- if (route->type == OSPF6_DEST_TYPE_ROUTER)
- {
- if (IS_OSPF6_DEBUG_ABR || IS_OSPF6_DEBUG_ORIGINATE (INTER_ROUTER))
- {
- is_debug++;
- inet_ntop (AF_INET, &(ADV_ROUTER_IN_PREFIX (&route->prefix)),
- buf, sizeof (buf));
- zlog_info ("Originating summary in area %s for ASBR %s",
- area->name, buf);
- }
- summary_table = area->summary_router;
- }
- else
- {
- if (IS_OSPF6_DEBUG_ABR || IS_OSPF6_DEBUG_ORIGINATE (INTER_PREFIX))
- {
- is_debug++;
- prefix2str (&route->prefix, buf, sizeof (buf));
- zlog_info ("Originating summary in area %s for %s",
- area->name, buf);
- }
- summary_table = area->summary_prefix;
- }
- summary = ospf6_route_lookup (&route->prefix, summary_table);
- if (summary)
- old = ospf6_lsdb_lookup (summary->path.origin.type,
- summary->path.origin.id,
- area->ospf6->router_id, area->lsdb);
- /* if this route has just removed, remove corresponding LSA */
- if (CHECK_FLAG (route->flag, OSPF6_ROUTE_REMOVE))
- {
- if (is_debug)
- zlog_info ("The route has just removed, purge previous LSA");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* Only destination type network, range or ASBR are considered */
- if (route->type != OSPF6_DEST_TYPE_NETWORK &&
- route->type != OSPF6_DEST_TYPE_RANGE &&
- (route->type != OSPF6_DEST_TYPE_ROUTER ||
- ! CHECK_FLAG (route->path.router_bits, OSPF6_ROUTER_BIT_E)))
- {
- if (is_debug)
- zlog_info ("Route type is none of network, range nor ASBR, withdraw");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* AS External routes are never considered */
- if (route->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
- route->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
- {
- if (is_debug)
- zlog_info ("Path type is external, withdraw");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* do not generate if the path's area is the same as target area */
- if (route->path.area_id == area->area_id)
- {
- if (is_debug)
- zlog_info ("The route is in the area itself, ignore");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* do not generate if the nexthops belongs to the target area */
- oi = ospf6_interface_lookup_by_ifindex (route->nexthop[0].ifindex);
- if (oi && oi->area && oi->area == area)
- {
- if (is_debug)
- zlog_info ("The route's nexthop is in the same area, ignore");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* do not generate if the route cost is greater or equal to LSInfinity */
- if (route->path.cost >= LS_INFINITY)
- {
- if (is_debug)
- zlog_info ("The cost exceeds LSInfinity, withdraw");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* if this is a route to ASBR */
- if (route->type == OSPF6_DEST_TYPE_ROUTER)
- {
- /* Only the prefered best path is considered */
- if (! CHECK_FLAG (route->flag, OSPF6_ROUTE_BEST))
- {
- if (is_debug)
- zlog_info ("This is the secondary path to the ASBR, ignore");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* Do not generate if the area is stub */
- /* XXX */
- }
- /* if this is an intra-area route, this may be suppressed by aggregation */
- if (route->type == OSPF6_DEST_TYPE_NETWORK &&
- route->path.type == OSPF6_PATH_TYPE_INTRA)
- {
- /* search for configured address range for the route's area */
- route_area = ospf6_area_lookup (route->path.area_id, area->ospf6);
- assert (route_area);
- range = ospf6_route_lookup_bestmatch (&route->prefix,
- route_area->range_table);
- /* ranges are ignored when originate backbone routes to transit area.
- Otherwise, if ranges are configured, the route is suppressed. */
- if (range && ! CHECK_FLAG (range->flag, OSPF6_ROUTE_REMOVE) &&
- (route->path.area_id != BACKBONE_AREA_ID ||
- ! IS_AREA_TRANSIT (area)))
- {
- if (is_debug)
- {
- prefix2str (&range->prefix, buf, sizeof (buf));
- zlog_info ("Suppressed by range %s of area %s",
- buf, route_area->name);
- }
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- }
- /* If this is a configured address range */
- if (route->type == OSPF6_DEST_TYPE_RANGE)
- {
- /* If DoNotAdvertise is set */
- if (CHECK_FLAG (route->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE))
- {
- if (is_debug)
- zlog_info ("This is the range with DoNotAdvertise set. ignore");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- /* Whether the route have active longer prefix */
- if (! CHECK_FLAG (route->flag, OSPF6_ROUTE_ACTIVE_SUMMARY))
- {
- if (is_debug)
- zlog_info ("The range is not active. withdraw");
- if (summary)
- ospf6_route_remove (summary, summary_table);
- if (old)
- ospf6_lsa_purge (old);
- return;
- }
- }
- /* Check export list */
- if (EXPORT_NAME (area))
- {
- if (EXPORT_LIST (area) == NULL)
- EXPORT_LIST (area) =
- access_list_lookup (AFI_IP6, EXPORT_NAME (area));
- if (EXPORT_LIST (area))
- if (access_list_apply (EXPORT_LIST (area),
- &route->prefix) == FILTER_DENY)
- {
- if (is_debug)
- {
- inet_ntop (AF_INET, &(ADV_ROUTER_IN_PREFIX (&route->prefix)),
- buf, sizeof(buf));
- zlog_debug ("prefix %s was denied by export list", buf);
- }
- return;
- }
- }
- /* Check filter-list */
- if (PREFIX_NAME_OUT (area))
- {
- if (PREFIX_LIST_OUT (area) == NULL)
- PREFIX_LIST_OUT (area) =
- prefix_list_lookup(AFI_IP6, PREFIX_NAME_OUT (area));
- if (PREFIX_LIST_OUT (area))
- if (prefix_list_apply (PREFIX_LIST_OUT (area),
- &route->prefix) != PREFIX_PERMIT)
- {
- if (is_debug)
- {
- inet_ntop (AF_INET, &(ADV_ROUTER_IN_PREFIX (&route->prefix)),
- buf, sizeof (buf));
- zlog_debug ("prefix %s was denied by filter-list out", buf);
- }
- return;
- }
- }
- /* the route is going to be originated. store it in area's summary_table */
- if (summary == NULL)
- {
- summary = ospf6_route_copy (route);
- if (route->type == OSPF6_DEST_TYPE_NETWORK ||
- route->type == OSPF6_DEST_TYPE_RANGE)
- summary->path.origin.type = htons (OSPF6_LSTYPE_INTER_PREFIX);
- else
- summary->path.origin.type = htons (OSPF6_LSTYPE_INTER_ROUTER);
- summary->path.origin.adv_router = area->ospf6->router_id;
- summary->path.origin.id =
- ospf6_new_ls_id (summary->path.origin.type,
- summary->path.origin.adv_router, area->lsdb);
- summary = ospf6_route_add (summary, summary_table);
- }
- else
- {
- summary->type = route->type;
- gettimeofday (&summary->changed, NULL);
- }
- summary->path.router_bits = route->path.router_bits;
- summary->path.options[0] = route->path.options[0];
- summary->path.options[1] = route->path.options[1];
- summary->path.options[2] = route->path.options[2];
- summary->path.prefix_options = route->path.prefix_options;
- summary->path.area_id = area->area_id;
- summary->path.type = OSPF6_PATH_TYPE_INTER;
- summary->path.cost = route->path.cost;
- summary->nexthop[0] = route->nexthop[0];
- /* prepare buffer */
- memset (buffer, 0, sizeof (buffer));
- lsa_header = (struct ospf6_lsa_header *) buffer;
- if (route->type == OSPF6_DEST_TYPE_ROUTER)
- {
- router_lsa = (struct ospf6_inter_router_lsa *)
- ((caddr_t) lsa_header + sizeof (struct ospf6_lsa_header));
- p = (caddr_t) router_lsa + sizeof (struct ospf6_inter_router_lsa);
- /* Fill Inter-Area-Router-LSA */
- router_lsa->options[0] = route->path.options[0];
- router_lsa->options[1] = route->path.options[1];
- router_lsa->options[2] = route->path.options[2];
- OSPF6_ABR_SUMMARY_METRIC_SET (router_lsa, route->path.cost);
- router_lsa->router_id = ADV_ROUTER_IN_PREFIX (&route->prefix);
- type = htons (OSPF6_LSTYPE_INTER_ROUTER);
- }
- else
- {
- prefix_lsa = (struct ospf6_inter_prefix_lsa *)
- ((caddr_t) lsa_header + sizeof (struct ospf6_lsa_header));
- p = (caddr_t) prefix_lsa + sizeof (struct ospf6_inter_prefix_lsa);
- /* Fill Inter-Area-Prefix-LSA */
- OSPF6_ABR_SUMMARY_METRIC_SET (prefix_lsa, route->path.cost);
- prefix_lsa->prefix.prefix_length = route->prefix.prefixlen;
- prefix_lsa->prefix.prefix_options = route->path.prefix_options;
- /* set Prefix */
- memcpy (p, &route->prefix.u.prefix6,
- OSPF6_PREFIX_SPACE (route->prefix.prefixlen));
- ospf6_prefix_apply_mask (&prefix_lsa->prefix);
- p += OSPF6_PREFIX_SPACE (route->prefix.prefixlen);
- type = htons (OSPF6_LSTYPE_INTER_PREFIX);
- }
- /* Fill LSA Header */
- lsa_header->age = 0;
- lsa_header->type = type;
- lsa_header->id = summary->path.origin.id;
- lsa_header->adv_router = area->ospf6->router_id;
- lsa_header->seqnum =
- ospf6_new_ls_seqnum (lsa_header->type, lsa_header->id,
- lsa_header->adv_router, area->lsdb);
- lsa_header->length = htons ((caddr_t) p - (caddr_t) lsa_header);
- /* LSA checksum */
- ospf6_lsa_checksum (lsa_header);
- /* create LSA */
- lsa = ospf6_lsa_create (lsa_header);
- /* Originate */
- ospf6_lsa_originate_area (lsa, area);
- }
- void
- ospf6_abr_range_update (struct ospf6_route *range)
- {
- u_int32_t cost = 0;
- struct ospf6_route *ro;
- assert (range->type == OSPF6_DEST_TYPE_RANGE);
- /* update range's cost and active flag */
- for (ro = ospf6_route_match_head (&range->prefix, ospf6->route_table);
- ro; ro = ospf6_route_match_next (&range->prefix, ro))
- {
- if (ro->path.area_id == range->path.area_id &&
- ! CHECK_FLAG (ro->flag, OSPF6_ROUTE_REMOVE))
- cost = MAX (cost, ro->path.cost);
- }
- if (range->path.cost != cost)
- {
- range->path.cost = cost;
- if (range->path.cost)
- SET_FLAG (range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY);
- else
- UNSET_FLAG (range->flag, OSPF6_ROUTE_ACTIVE_SUMMARY);
- ospf6_abr_originate_summary (range);
- }
- }
- void
- ospf6_abr_originate_summary (struct ospf6_route *route)
- {
- listnode node;
- struct ospf6_area *oa;
- struct ospf6_route *range = NULL;
- if (route->type == OSPF6_DEST_TYPE_NETWORK)
- {
- oa = ospf6_area_lookup (route->path.area_id, ospf6);
- range = ospf6_route_lookup_bestmatch (&route->prefix, oa->range_table);
- if (range)
- ospf6_abr_range_update (range);
- }
- for (node = listhead (ospf6->area_list); node; nextnode (node))
- {
- oa = (struct ospf6_area *) getdata (node);
- ospf6_abr_originate_summary_to_area (route, oa);
- }
- }
- /* RFC 2328 16.2. Calculating the inter-area routes */
- void
- ospf6_abr_examin_summary (struct ospf6_lsa *lsa, struct ospf6_area *oa)
- {
- struct prefix prefix, abr_prefix;
- struct ospf6_route_table *table = NULL;
- struct ospf6_route *range, *route, *old = NULL;
- struct ospf6_route *abr_entry;
- u_char type = 0;
- char options[3] = {0, 0, 0};
- u_int8_t prefix_options = 0;
- u_int32_t cost = 0;
- u_char router_bits = 0;
- int i;
- char buf[64];
- int is_debug = 0;
- if (lsa->header->type == htons (OSPF6_LSTYPE_INTER_PREFIX))
- {
- struct ospf6_inter_prefix_lsa *prefix_lsa;
- if (IS_OSPF6_DEBUG_EXAMIN (INTER_PREFIX))
- {
- is_debug++;
- zlog_info ("Examin %s in area %s", lsa->name, oa->name);
- }
- prefix_lsa = (struct ospf6_inter_prefix_lsa *)
- OSPF6_LSA_HEADER_END (lsa->header);
- prefix.family = AF_INET6;
- prefix.prefixlen = prefix_lsa->prefix.prefix_length;
- ospf6_prefix_in6_addr (&prefix.u.prefix6, &prefix_lsa->prefix);
- prefix2str (&prefix, buf, sizeof (buf));
- table = oa->ospf6->route_table;
- type = OSPF6_DEST_TYPE_NETWORK;
- prefix_options = prefix_lsa->prefix.prefix_options;
- cost = OSPF6_ABR_SUMMARY_METRIC (prefix_lsa);
- }
- else if (lsa->header->type == htons (OSPF6_LSTYPE_INTER_ROUTER))
- {
- struct ospf6_inter_router_lsa *router_lsa;
- if (IS_OSPF6_DEBUG_EXAMIN (INTER_ROUTER))
- {
- is_debug++;
- zlog_info ("Examin %s in area %s", lsa->name, oa->name);
- }
- router_lsa = (struct ospf6_inter_router_lsa *)
- OSPF6_LSA_HEADER_END (lsa->header);
- ospf6_linkstate_prefix (router_lsa->router_id, htonl (0), &prefix);
- inet_ntop (AF_INET, &router_lsa->router_id, buf, sizeof (buf));
- table = oa->ospf6->brouter_table;
- type = OSPF6_DEST_TYPE_ROUTER;
- options[0] = router_lsa->options[0];
- options[1] = router_lsa->options[1];
- options[2] = router_lsa->options[2];
- cost = OSPF6_ABR_SUMMARY_METRIC (router_lsa);
- SET_FLAG (router_bits, OSPF6_ROUTER_BIT_E);
- }
- else
- assert (0);
- /* Find existing route */
- route = ospf6_route_lookup (&prefix, table);
- if (route)
- ospf6_route_lock (route);
- while (route && ospf6_route_is_prefix (&prefix, route))
- {
- if (route->path.area_id == oa->area_id &&
- route->path.origin.type == lsa->header->type &&
- route->path.origin.id == lsa->header->id &&
- route->path.origin.adv_router == lsa->header->adv_router)
- old = route;
- route = ospf6_route_next (route);
- }
- /* (1) if cost == LSInfinity or if the LSA is MaxAge */
- if (cost == LS_INFINITY)
- {
- if (is_debug)
- zlog_info ("cost is LS_INFINITY, ignore");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- if (OSPF6_LSA_IS_MAXAGE (lsa))
- {
- if (is_debug)
- zlog_info ("LSA is MaxAge, ignore");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- /* (2) if the LSA is self-originated, ignore */
- if (lsa->header->adv_router == oa->ospf6->router_id)
- {
- if (is_debug)
- zlog_info ("LSA is self-originated, ignore");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- /* (3) if the prefix is equal to an active configured address range */
- if (lsa->header->type == htons (OSPF6_LSTYPE_INTER_PREFIX))
- {
- range = ospf6_route_lookup (&prefix, oa->range_table);
- if (range)
- {
- if (is_debug)
- zlog_info ("Prefix is equal to address range, ignore");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- }
- /* (4) if the routing table entry for the ABR does not exist */
- ospf6_linkstate_prefix (lsa->header->adv_router, htonl (0), &abr_prefix);
- abr_entry = ospf6_route_lookup (&abr_prefix, oa->ospf6->brouter_table);
- if (abr_entry == NULL || abr_entry->path.area_id != oa->area_id ||
- CHECK_FLAG (abr_entry->flag, OSPF6_ROUTE_REMOVE) ||
- ! CHECK_FLAG (abr_entry->path.router_bits, OSPF6_ROUTER_BIT_B))
- {
- if (is_debug)
- zlog_info ("ABR router entry does not exist, ignore");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- /* Check import list */
- if (IMPORT_NAME (oa))
- {
- if (IMPORT_LIST (oa) == NULL)
- IMPORT_LIST (oa) = access_list_lookup (AFI_IP6, IMPORT_NAME (oa));
- if (IMPORT_LIST (oa))
- if (access_list_apply (IMPORT_LIST (oa), &prefix) == FILTER_DENY)
- {
- if (is_debug)
- zlog_debug ("Prefix was denied by import-list");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- }
- /* Check input prefix-list */
- if (PREFIX_NAME_IN (oa))
- {
- if (PREFIX_LIST_IN (oa) == NULL)
- PREFIX_LIST_IN (oa) = prefix_list_lookup (AFI_IP6, PREFIX_NAME_IN (oa));
- if (PREFIX_LIST_IN (oa))
- if (prefix_list_apply (PREFIX_LIST_IN (oa), &prefix) != PREFIX_PERMIT)
- {
- if (is_debug)
- zlog_debug ("Prefix was denied by prefix-list");
- if (old)
- ospf6_route_remove (old, table);
- return;
- }
- }
- /* (5),(6),(7) the path preference is handled by the sorting
- in the routing table. Always install the path by substituting
- old route (if any). */
- if (old)
- route = ospf6_route_copy (old);
- else
- route = ospf6_route_create ();
- route->type = type;
- route->prefix = prefix;
- route->path.origin.type = lsa->header->type;
- route->path.origin.id = lsa->header->id;
- route->path.origin.adv_router = lsa->header->adv_router;
- route->path.router_bits = router_bits;
- route->path.options[0] = options[0];
- route->path.options[1] = options[1];
- route->path.options[2] = options[2];
- route->path.prefix_options = prefix_options;
- route->path.area_id = oa->area_id;
- route->path.type = OSPF6_PATH_TYPE_INTER;
- route->path.cost = abr_entry->path.cost + cost;
- for (i = 0; i < OSPF6_MULTI_PATH_LIMIT; i++)
- route->nexthop[i] = abr_entry->nexthop[i];
- if (is_debug)
- zlog_info ("Install route: %s", buf);
- ospf6_route_add (route, table);
- }
- void
- ospf6_abr_examin_brouter (u_int32_t router_id)
- {
- struct ospf6_lsa *lsa;
- struct ospf6_area *oa;
- listnode node;
- u_int16_t type;
- type = htons (OSPF6_LSTYPE_INTER_ROUTER);
- for (node = listhead (ospf6->area_list); node; nextnode (node))
- {
- oa = OSPF6_AREA (getdata (node));
- for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa;
- lsa = ospf6_lsdb_type_router_next (type, router_id, lsa))
- ospf6_abr_examin_summary (lsa, oa);
- }
- type = htons (OSPF6_LSTYPE_INTER_PREFIX);
- for (node = listhead (ospf6->area_list); node; nextnode (node))
- {
- oa = OSPF6_AREA (getdata (node));
- for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa;
- lsa = ospf6_lsdb_type_router_next (type, router_id, lsa))
- ospf6_abr_examin_summary (lsa, oa);
- }
- }
- void
- ospf6_abr_reimport (struct ospf6_area *oa)
- {
- struct ospf6_lsa *lsa;
- u_int16_t type;
- type = htons (OSPF6_LSTYPE_INTER_ROUTER);
- for (lsa = ospf6_lsdb_type_head (type, oa->lsdb); lsa;
- lsa = ospf6_lsdb_type_next (type, lsa))
- ospf6_abr_examin_summary (lsa, oa);
- type = htons (OSPF6_LSTYPE_INTER_PREFIX);
- for (lsa = ospf6_lsdb_type_head (type, oa->lsdb); lsa;
- lsa = ospf6_lsdb_type_next (type, lsa))
- ospf6_abr_examin_summary (lsa, oa);
- }
- /* Display functions */
- int
- ospf6_inter_area_prefix_lsa_show (struct vty *vty, struct ospf6_lsa *lsa)
- {
- struct ospf6_inter_prefix_lsa *prefix_lsa;
- struct in6_addr in6;
- char buf[64];
- prefix_lsa = (struct ospf6_inter_prefix_lsa *)
- OSPF6_LSA_HEADER_END (lsa->header);
- vty_out (vty, " Metric: %lu%s",
- (u_long) OSPF6_ABR_SUMMARY_METRIC (prefix_lsa), VNL);
- ospf6_prefix_options_printbuf (prefix_lsa->prefix.prefix_options,
- buf, sizeof (buf));
- vty_out (vty, " Prefix Options: %s%s", buf, VNL);
- ospf6_prefix_in6_addr (&in6, &prefix_lsa->prefix);
- inet_ntop (AF_INET6, &in6, buf, sizeof (buf));
- vty_out (vty, " Prefix: %s/%d%s", buf,
- prefix_lsa->prefix.prefix_length, VNL);
- return 0;
- }
- int
- ospf6_inter_area_router_lsa_show (struct vty *vty, struct ospf6_lsa *lsa)
- {
- struct ospf6_inter_router_lsa *router_lsa;
- char buf[64];
- router_lsa = (struct ospf6_inter_router_lsa *)
- OSPF6_LSA_HEADER_END (lsa->header);
- ospf6_options_printbuf (router_lsa->options, buf, sizeof (buf));
- vty_out (vty, " Options: %s%s", buf, VNL);
- vty_out (vty, " Metric: %lu%s",
- (u_long) OSPF6_ABR_SUMMARY_METRIC (router_lsa), VNL);
- inet_ntop (AF_INET, &router_lsa->router_id, buf, sizeof (buf));
- vty_out (vty, " Destination Router ID: %s%s", buf, VNL);
- return 0;
- }
- /* Debug commands */
- DEFUN (debug_ospf6_abr,
- debug_ospf6_abr_cmd,
- "debug ospf6 abr",
- DEBUG_STR
- OSPF6_STR
- "Debug OSPFv3 ABR functionn"
- )
- {
- OSPF6_DEBUG_ABR_ON ();
- return CMD_SUCCESS;
- }
- DEFUN (no_debug_ospf6_abr,
- no_debug_ospf6_abr_cmd,
- "no debug ospf6 abr",
- NO_STR
- DEBUG_STR
- OSPF6_STR
- "Debug OSPFv3 ABR functionn"
- )
- {
- OSPF6_DEBUG_ABR_OFF ();
- return CMD_SUCCESS;
- }
- int
- config_write_ospf6_debug_abr (struct vty *vty)
- {
- if (IS_OSPF6_DEBUG_ABR)
- vty_out (vty, "debug ospf6 abr%s", VNL);
- return 0;
- }
- void
- install_element_ospf6_debug_abr ()
- {
- install_element (ENABLE_NODE, &debug_ospf6_abr_cmd);
- install_element (ENABLE_NODE, &no_debug_ospf6_abr_cmd);
- install_element (CONFIG_NODE, &debug_ospf6_abr_cmd);
- install_element (CONFIG_NODE, &no_debug_ospf6_abr_cmd);
- }
- struct ospf6_lsa_handler inter_prefix_handler =
- {
- OSPF6_LSTYPE_INTER_PREFIX,
- "Inter-Prefix",
- ospf6_inter_area_prefix_lsa_show
- };
- struct ospf6_lsa_handler inter_router_handler =
- {
- OSPF6_LSTYPE_INTER_ROUTER,
- "Inter-Router",
- ospf6_inter_area_router_lsa_show
- };
- void
- ospf6_abr_init ()
- {
- ospf6_install_lsa_handler (&inter_prefix_handler);
- ospf6_install_lsa_handler (&inter_router_handler);
- }