139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*
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* BIRD -- OSPF
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*
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* (c) 1999 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "ospf.h"
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static int
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ospf_start(struct proto *p)
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{
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struct proto_ospf *po=(struct proto_ospf *)p;
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DBG("%s: Start\n",p->name);
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p->if_notify=ospf_if_notify;
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p->rte_better=ospf_rte_better;
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p->rte_same=ospf_rte_same;
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fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib);
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return PS_UP;
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}
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static void
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ospf_dump(struct proto *p)
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{
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char areastr[20];
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struct ospf_iface *ifa;
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struct ospf_neighbor *n;
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struct ospf_config *c = (void *) p->cf;
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struct proto_ospf *po=(struct proto_ospf *)p;
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struct ospf_area *oa;
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debug("%s: Area number: %d\n", p->name, po->areano);
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WALK_LIST(ifa, po->iface_list)
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{
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debug("%s: Interface: %s\n", p->name, ifa->iface->name);
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debug("%s: state: %u\n", p->name, ifa->state);
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debug("%s: DR: %I\n", p->name, ifa->drid);
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debug("%s: BDR: %I\n", p->name, ifa->bdrid);
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WALK_LIST(n, ifa->neigh_list)
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{
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debug("%s: neighbor %I in state %u\n", p->name, n->rid, n->state);
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}
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}
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WALK_LIST(NODE oa,po->area_list)
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{
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debug("\n%s: LSA graph dump for area \"%I\" start:\n", p->name,oa->areaid);
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ospf_top_dump(oa->gr);
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debug("%s: LSA graph dump for area \"%I\" finished\n\n", p->name,
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oa->areaid);
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}
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neigh_dump_all();
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}
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static struct proto *
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ospf_init(struct proto_config *c)
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{
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struct proto *p = proto_new(c, sizeof(struct proto_ospf));
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struct proto_ospf *po=(struct proto_ospf *)p;
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DBG(" OSPF: Init.\n");
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p->neigh_notify = NULL;
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p->if_notify = NULL;
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init_list(&(po->iface_list));
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init_list(&(po->area_list));
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p->import_control = ospf_import_control;
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return p;
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}
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/* If new is better return 1 */
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static int
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ospf_rte_better(struct rte *new, struct rte *old)
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{
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struct proto *p = new->attrs->proto;
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if(new->u.ospf.metric1=LSINFINITY) return 0;
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if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA))
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&& (old->attrs->source==RTS_OSPF_EXT)) return 1;
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if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA))
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&& (new->attrs->source==RTS_OSPF_EXT)) return 0;
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if(new->u.ospf.metric2!=0)
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{
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if(old->u.ospf.metric2==0) return 0;
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if(new->u.ospf.metric2<old->u.ospf.metric2) return 1;
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return 0;
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}
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else
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{
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if(old->u.ospf.metric2!=0) return 1;
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if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
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return 0;
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}
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}
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static int
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ospf_rte_same(struct rte *new, struct rte *old)
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{
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struct proto *p = new->attrs->proto;
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if(new->attrs->source!=old->attrs->source) return 0;
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if(new->u.ospf.metric1!=old->u.ospf.metric1) return 0;
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if(new->u.ospf.metric2!=old->u.ospf.metric2) return 0;
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return 1;
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}
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static void
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ospf_postconfig(struct proto_config *c)
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{
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DBG( " OSPF: postconfig\n" );
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}
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int
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ospf_import_control(struct proto *p, rte **new, ea_list **attrs, struct linpool *pool)
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{
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int i;
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rte *e=*new;
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struct proto_ospf *po=(struct proto_ospf *)p;
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if(p==e->attrs->proto) return -1;
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return 0;
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}
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struct protocol proto_ospf = {
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name: "OSPF",
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template: "ospf%d",
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init: ospf_init,
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dump: ospf_dump,
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start: ospf_start,
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postconfig: ospf_postconfig,
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};
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