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333 lines
8.1 KiB
C
333 lines
8.1 KiB
C
/*
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* OSPF6 Area Data Structure
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* Copyright (C) 1999-2002 Yasuhiro Ohara
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "ospf6d.h"
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static int area_index;
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#define IS_OSPF6_DUMP_AREA (ospf6_dump_is_on (area_index))
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static void
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ospf6_area_foreach_interface (struct ospf6_area *o6a, void *arg, int val,
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void (*func) (void *, int, void *))
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{
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listnode node;
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struct ospf6_interface *o6i;
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for (node = listhead (o6a->if_list); node; nextnode (node))
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{
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o6i = (struct ospf6_interface *) getdata (node);
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(*func) (arg, val, o6i);
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}
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}
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static void
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ospf6_area_foreach_neighbor (struct ospf6_area *o6a, void *arg, int val,
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void (*func) (void *, int, void *))
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{
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listnode node;
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struct ospf6_interface *o6i;
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for (node = listhead (o6a->if_list); node; nextnode (node))
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{
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o6i = (struct ospf6_interface *) getdata (node);
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(*o6i->foreach_nei) (o6i, arg, val, func);
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}
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}
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static int
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ospf6_area_maxage_remover (struct thread *t)
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{
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int count;
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struct ospf6_area *o6a = (struct ospf6_area *) THREAD_ARG (t);
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o6a->maxage_remover = (struct thread *) NULL;
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count = 0;
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o6a->foreach_nei (o6a, &count, NBS_EXCHANGE, ospf6_count_state);
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o6a->foreach_nei (o6a, &count, NBS_LOADING, ospf6_count_state);
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if (count != 0)
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return 0;
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ospf6_lsdb_remove_maxage (o6a->lsdb);
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return 0;
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}
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void
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ospf6_area_schedule_maxage_remover (void *arg, int val, void *obj)
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{
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struct ospf6_area *o6a = (struct ospf6_area *) obj;
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if (o6a->maxage_remover != NULL)
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return;
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o6a->maxage_remover =
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thread_add_event (master, ospf6_area_maxage_remover, o6a, 0);
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}
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int
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ospf6_area_is_stub (struct ospf6_area *o6a)
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{
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if (OSPF6_OPT_ISSET (o6a->options, OSPF6_OPT_E))
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return 0;
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return 1;
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}
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int
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ospf6_area_is_transit (struct ospf6_area *o6a)
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{
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return 0;
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}
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void
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ospf6_area_route_add (void *data)
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{
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struct ospf6_route_req *route = data;
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struct in6_addr local;
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inet_pton (AF_INET6, "::1", &local);
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if (! memcmp (&route->nexthop.address, &local, sizeof (struct in6_addr)))
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{
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if (IS_OSPF6_DUMP_AREA)
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zlog_info ("AREA: Self-originated route add, ignore");
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return;
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}
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ospf6_route_add (route, ospf6->route_table);
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}
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void
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ospf6_area_route_remove (void *data)
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{
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struct ospf6_route_req *route = data;
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struct in6_addr local;
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inet_pton (AF_INET6, "::1", &local);
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if (! memcmp (&route->nexthop.address, &local, sizeof (struct in6_addr)))
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{
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if (IS_OSPF6_DUMP_AREA)
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zlog_info ("AREA: Self-originated route remove, ignore");
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return;
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}
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ospf6_route_remove (route, ospf6->route_table);
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}
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/* Make new area structure */
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struct ospf6_area *
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ospf6_area_create (u_int32_t area_id)
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{
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struct ospf6_area *o6a;
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char namebuf[64];
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/* allocate memory */
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o6a = XCALLOC (MTYPE_OSPF6_AREA, sizeof (struct ospf6_area));
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/* initialize */
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inet_ntop (AF_INET, &area_id, o6a->str, sizeof (o6a->str));
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o6a->area_id = area_id;
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o6a->if_list = list_new ();
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o6a->lsdb = ospf6_lsdb_create ();
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o6a->spf_tree = ospf6_spftree_create ();
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snprintf (namebuf, sizeof (namebuf), "Area %s's route table", o6a->str);
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o6a->route_table = ospf6_route_table_create (namebuf);
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o6a->route_table->hook_add = ospf6_area_route_add;
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o6a->route_table->hook_change = ospf6_area_route_add;
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o6a->route_table->hook_remove = ospf6_area_route_remove;
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snprintf (namebuf, sizeof (namebuf), "Area %s's topology table", o6a->str);
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o6a->table_topology = ospf6_route_table_create (namebuf);
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o6a->table_topology->hook_add = ospf6_intra_topology_add;
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o6a->table_topology->hook_change = ospf6_intra_topology_add;
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o6a->table_topology->hook_remove = ospf6_intra_topology_remove;
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/* xxx, set options */
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OSPF6_OPT_SET (o6a->options, OSPF6_OPT_V6);
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OSPF6_OPT_SET (o6a->options, OSPF6_OPT_E);
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OSPF6_OPT_SET (o6a->options, OSPF6_OPT_R);
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o6a->foreach_if = ospf6_area_foreach_interface;
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o6a->foreach_nei = ospf6_area_foreach_neighbor;
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return o6a;
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}
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void
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ospf6_area_bind_top (struct ospf6_area *o6a, struct ospf6 *o6)
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{
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o6a->ospf6 = o6;
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CALL_CHANGE_HOOK (&area_hook, o6a);
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return;
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}
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void
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ospf6_area_delete (struct ospf6_area *o6a)
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{
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listnode n;
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struct ospf6_interface *o6i;
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CALL_REMOVE_HOOK (&area_hook, o6a);
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/* ospf6 interface list */
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for (n = listhead (o6a->if_list); n; nextnode (n))
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{
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o6i = (struct ospf6_interface *) getdata (n);
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/* ospf6_interface_delete (o6i); */
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}
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list_delete (o6a->if_list);
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/* terminate LSDB */
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ospf6_lsdb_remove_all (o6a->lsdb);
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/* spf tree terminate */
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/* xxx */
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/* threads */
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if (o6a->spf_calc)
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thread_cancel (o6a->spf_calc);
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o6a->spf_calc = (struct thread *) NULL;
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if (o6a->route_calc)
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thread_cancel (o6a->route_calc);
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o6a->route_calc = (struct thread *) NULL;
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/* new */
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ospf6_route_table_delete (o6a->route_table);
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ospf6_spftree_delete (o6a->spf_tree);
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ospf6_route_table_delete (o6a->table_topology);
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/* free area */
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XFREE (MTYPE_OSPF6_AREA, o6a);
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}
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struct ospf6_area *
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ospf6_area_lookup (u_int32_t area_id, struct ospf6 *o6)
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{
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struct ospf6_area *o6a;
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listnode n;
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for (n = listhead (o6->area_list); n; nextnode (n))
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{
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o6a = (struct ospf6_area *) getdata (n);
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if (o6a->area_id == area_id)
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return o6a;
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}
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return (struct ospf6_area *) NULL;
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}
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void
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ospf6_area_show (struct vty *vty, struct ospf6_area *o6a)
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{
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listnode i;
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struct ospf6_interface *o6i;
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vty_out (vty, " Area %s%s", o6a->str, VTY_NEWLINE);
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vty_out (vty, " Number of Area scoped LSAs is %u%s",
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o6a->lsdb->count, VTY_NEWLINE);
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ospf6_spf_statistics_show (vty, o6a->spf_tree);
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vty_out (vty, " Interface attached to this area:");
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for (i = listhead (o6a->if_list); i; nextnode (i))
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{
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o6i = (struct ospf6_interface *) getdata (i);
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vty_out (vty, " %s", o6i->interface->name);
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}
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vty_out (vty, "%s", VTY_NEWLINE);
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for (i = listhead (o6a->if_list); i; nextnode (i))
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{
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o6i = (struct ospf6_interface *) getdata (i);
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if (listcount (o6i->neighbor_list) != 0)
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ospf6_interface_statistics_show (vty, o6i);
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}
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}
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void
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ospf6_area_statistics_show (struct vty *vty, struct ospf6_area *o6a)
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{
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#if 0
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listnode node;
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struct ospf6_interface *o6i;
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vty_out (vty, " Statistics of Area %s%s", o6a->str, VTY_NEWLINE);
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#endif
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}
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DEFUN (show_ipv6_ospf6_area_route,
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show_ipv6_ospf6_area_route_cmd,
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"show ipv6 ospf6 area A.B.C.D route",
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SHOW_STR
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IP6_STR
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OSPF6_STR
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OSPF6_AREA_STR
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OSPF6_AREA_ID_STR
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ROUTE_STR
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)
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{
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struct ospf6_area *o6a;
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u_int32_t area_id;
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OSPF6_CMD_CHECK_RUNNING ();
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inet_pton (AF_INET, argv[0], &area_id);
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o6a = ospf6_area_lookup (area_id, ospf6);
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if (! o6a)
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return CMD_SUCCESS;
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argc -= 1;
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argv += 1;
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return ospf6_route_table_show (vty, argc, argv, o6a->route_table);
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}
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ALIAS (show_ipv6_ospf6_area_route,
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show_ipv6_ospf6_area_route_prefix_cmd,
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"show ipv6 ospf6 area A.B.C.D route (X::X|detail)",
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SHOW_STR
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IP6_STR
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OSPF6_STR
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OSPF6_AREA_STR
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OSPF6_AREA_ID_STR
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ROUTE_STR
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"Specify IPv6 address\n"
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"Detailed information\n"
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)
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void
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ospf6_area_init ()
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{
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area_index = ospf6_dump_install ("area", "Area information\n");
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install_element (VIEW_NODE, &show_ipv6_ospf6_area_route_cmd);
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install_element (VIEW_NODE, &show_ipv6_ospf6_area_route_prefix_cmd);
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install_element (ENABLE_NODE, &show_ipv6_ospf6_area_route_cmd);
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install_element (ENABLE_NODE, &show_ipv6_ospf6_area_route_prefix_cmd);
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}
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