1999-11-17 15:50:41 +00:00
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/*
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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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2000-04-18 17:54:06 +00:00
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char *ospf_is[]={ "down", "loop", "waiting", "point-to-point", "drother",
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"backup", "dr" };
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2000-04-18 19:22:49 +00:00
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char *ospf_ism[]={ "interface up", "wait timer fired", "backup seen",
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"neighbor change", "loop indicated", "unloop indicated", "interface down"};
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2000-06-01 17:52:21 +00:00
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char *ospf_it[]={ "broadcast", "nbma", "point-to-point", "virtual link" };
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1999-11-17 15:50:41 +00:00
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void
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iface_chstate(struct ospf_iface *ifa, u8 state)
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{
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struct proto *p;
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2000-04-18 18:01:26 +00:00
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if(ifa->state!=state)
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2000-04-17 21:10:40 +00:00
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{
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2000-04-18 18:01:26 +00:00
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p=(struct proto *)(ifa->proto);
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debug("%s: Changing state of iface: %s from \"%s\" into \"%s\".\n",
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p->name, ifa->iface->name, ospf_is[ifa->state], ospf_is[state]);
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ifa->state=state;
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if(ifa->iface->flags & IF_MULTICAST)
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2000-04-17 21:10:40 +00:00
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{
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2000-04-18 18:01:26 +00:00
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if((state==OSPF_IS_BACKUP)||(state==OSPF_IS_DR))
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2000-04-17 21:10:40 +00:00
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{
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2000-04-18 18:01:26 +00:00
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if(ifa->dr_sk==NULL)
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{
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2000-04-18 19:31:42 +00:00
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DBG("%s: Adding new multicast socket for (B)DR\n", p->name);
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2000-04-18 18:01:26 +00:00
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ifa->dr_sk=sk_new(p->pool);
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2000-04-18 19:31:42 +00:00
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ifa->dr_sk->type=SK_IP_MC;
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ifa->dr_sk->dport=OSPF_PROTO;
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ifa->dr_sk->saddr=AllDRouters;
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ifa->dr_sk->daddr=AllDRouters;
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ifa->dr_sk->tos=IP_PREC_INTERNET_CONTROL;
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ifa->dr_sk->ttl=1;
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ifa->dr_sk->rx_hook=ospf_rx_hook;
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ifa->dr_sk->tx_hook=ospf_tx_hook;
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ifa->dr_sk->err_hook=ospf_err_hook;
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ifa->dr_sk->iface=ifa->iface;
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ifa->dr_sk->rbsize=ifa->iface->mtu;
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ifa->dr_sk->tbsize=ifa->iface->mtu;
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ifa->dr_sk->data=(void *)ifa;
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if(sk_open(ifa->dr_sk)!=0)
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{
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DBG("%s: SK_OPEN: new? mc open failed.\n", p->name);
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}
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2000-04-18 18:01:26 +00:00
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}
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2000-04-17 21:10:40 +00:00
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}
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2000-04-18 18:01:26 +00:00
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else
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2000-04-17 21:10:40 +00:00
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{
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2000-05-31 18:45:16 +00:00
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if(ifa->dr_sk!=NULL)
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{
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rfree(ifa->dr_sk);
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ifa->dr_sk=NULL;
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}
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2000-04-17 21:10:40 +00:00
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}
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}
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}
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1999-11-17 15:50:41 +00:00
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}
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void
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downint(struct ospf_iface *ifa)
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{
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2000-05-31 18:31:53 +00:00
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struct ospf_neighbor *n,*nx;
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2000-05-16 23:59:38 +00:00
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struct proto *p=&ifa->proto->proto;
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struct proto_ospf *po=ifa->proto;
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2000-05-31 18:31:53 +00:00
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WALK_LIST_DELSAFE(n,nx,ifa->neigh_list)
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2000-05-16 23:59:38 +00:00
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{
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2000-05-30 18:21:51 +00:00
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debug("%s: Removing neighbor %I\n", p->name, n->ip);
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2000-05-16 23:59:38 +00:00
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ospf_neigh_remove(n);
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}
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rem_node(NODE ifa);
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if(ifa->hello_sk!=NULL)
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{
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rfree(ifa->hello_sk);
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}
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if(ifa->dr_sk!=NULL)
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{
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rfree(ifa->dr_sk);
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}
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if(ifa->ip_sk!=NULL)
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{
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rfree(ifa->ip_sk);
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}
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if(ifa->wait_timer!=NULL)
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{
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tm_stop(ifa->wait_timer);
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rfree(ifa->wait_timer);
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}
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2000-05-31 18:45:16 +00:00
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if(ifa->hello_timer!=NULL)
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{
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tm_stop(ifa->hello_timer);
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rfree(ifa->hello_timer);
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}
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2000-05-16 23:59:38 +00:00
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mb_free(ifa);
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1999-11-17 15:50:41 +00:00
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}
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void
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ospf_int_sm(struct ospf_iface *ifa, int event)
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{
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2000-04-30 22:14:31 +00:00
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struct proto *p=(struct proto *)(ifa->proto);
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struct proto_ospf *po=ifa->proto;
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2000-05-31 18:55:57 +00:00
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struct ospf_area *oa=ifa->oa;
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1999-11-17 15:50:41 +00:00
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2000-05-09 12:02:48 +00:00
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debug("%s: SM on iface %s. Event is \"%s\".\n",
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2000-04-18 19:22:49 +00:00
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p->name, ifa->iface->name, ospf_ism[event]);
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1999-11-17 15:50:41 +00:00
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switch(event)
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{
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case ISM_UP:
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if(ifa->state==OSPF_IS_DOWN)
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{
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2000-02-24 00:26:10 +00:00
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/* Now, nothing should be adjacent */
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1999-11-17 15:50:41 +00:00
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restart_hellotim(ifa);
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if((ifa->type==OSPF_IT_PTP) || (ifa->type==OSPF_IT_VLINK))
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{
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iface_chstate(ifa, OSPF_IS_PTP);
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}
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else
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{
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if(ifa->priority==0)
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{
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iface_chstate(ifa, OSPF_IS_DROTHER);
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}
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else
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{
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iface_chstate(ifa, OSPF_IS_WAITING);
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restart_waittim(ifa);
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}
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}
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2000-02-24 00:26:10 +00:00
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addifa_rtlsa(ifa);
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1999-11-17 15:50:41 +00:00
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}
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2000-05-31 14:06:33 +00:00
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schedule_rt_lsa(ifa->oa);
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1999-11-17 15:50:41 +00:00
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break;
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case ISM_BACKS:
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case ISM_WAITF:
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if(ifa->state==OSPF_IS_WAITING)
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{
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bdr_election(ifa ,p);
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}
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break;
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case ISM_NEICH:
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if((ifa->state==OSPF_IS_DROTHER) || (ifa->state==OSPF_IS_DR) ||
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(ifa->state==OSPF_IS_BACKUP))
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{
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bdr_election(ifa ,p);
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2000-05-31 14:06:33 +00:00
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schedule_rt_lsa(ifa->oa);
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1999-11-17 15:50:41 +00:00
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}
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2000-04-30 22:14:31 +00:00
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break;
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1999-11-17 15:50:41 +00:00
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case ISM_DOWN:
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iface_chstate(ifa, OSPF_IS_DOWN);
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downint(ifa);
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2000-05-31 18:55:57 +00:00
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schedule_rt_lsa(oa);
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1999-11-17 15:50:41 +00:00
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break;
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case ISM_LOOP: /* Useless? */
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iface_chstate(ifa, OSPF_IS_LOOP);
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downint(ifa);
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2000-05-31 14:06:33 +00:00
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schedule_rt_lsa(ifa->oa);
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1999-11-17 15:50:41 +00:00
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break;
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case ISM_UNLOOP:
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iface_chstate(ifa, OSPF_IS_DOWN);
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2000-05-31 14:06:33 +00:00
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schedule_rt_lsa(ifa->oa);
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1999-11-17 15:50:41 +00:00
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break;
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default:
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die("%s: ISM - Unknown event?",p->name);
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break;
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}
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}
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sock *
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ospf_open_mc_socket(struct ospf_iface *ifa)
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{
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sock *mcsk;
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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2000-05-16 23:59:38 +00:00
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mcsk=sk_new(p->pool);
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mcsk->type=SK_IP_MC;
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mcsk->dport=OSPF_PROTO;
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mcsk->saddr=AllSPFRouters;
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mcsk->daddr=AllSPFRouters;
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mcsk->tos=IP_PREC_INTERNET_CONTROL;
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mcsk->ttl=1;
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mcsk->rx_hook=ospf_rx_hook;
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mcsk->tx_hook=ospf_tx_hook;
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mcsk->err_hook=ospf_err_hook;
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mcsk->iface=ifa->iface;
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mcsk->rbsize=ifa->iface->mtu;
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mcsk->tbsize=ifa->iface->mtu;
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mcsk->data=(void *)ifa;
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if(sk_open(mcsk)!=0)
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1999-11-17 15:50:41 +00:00
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{
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2000-05-16 23:59:38 +00:00
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DBG("%s: SK_OPEN: mc open failed.\n",p->name);
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return(NULL);
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1999-11-17 15:50:41 +00:00
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}
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2000-05-16 23:59:38 +00:00
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DBG("%s: SK_OPEN: mc opened.\n",p->name);
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return(mcsk);
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1999-11-17 15:50:41 +00:00
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}
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sock *
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ospf_open_ip_socket(struct ospf_iface *ifa)
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{
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sock *ipsk;
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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ipsk=sk_new(p->pool);
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ipsk->type=SK_IP;
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ipsk->dport=OSPF_PROTO;
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ipsk->saddr=ifa->iface->addr->ip;
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ipsk->tos=IP_PREC_INTERNET_CONTROL;
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ipsk->ttl=1;
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ipsk->rx_hook=ospf_rx_hook;
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ipsk->tx_hook=ospf_tx_hook;
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ipsk->err_hook=ospf_err_hook;
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ipsk->iface=ifa->iface;
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ipsk->rbsize=ifa->iface->mtu;
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ipsk->tbsize=ifa->iface->mtu;
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ipsk->data=(void *)ifa;
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if(sk_open(ipsk)!=0)
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{
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DBG("%s: SK_OPEN: ip open failed.\n",p->name);
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return(NULL);
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}
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DBG("%s: SK_OPEN: ip opened.\n",p->name);
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return(ipsk);
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}
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/*
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* This will later decide, wheter use iface for OSPF or not
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* depending on config
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*/
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u8
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is_good_iface(struct proto *p, struct iface *iface)
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{
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if(iface->flags & IF_UP)
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{
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if(!(iface->flags & IF_IGNORE)) return 1;
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}
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return 0;
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}
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/* Of course, it's NOT true now */
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u8
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2000-02-23 23:13:10 +00:00
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ospf_iface_clasify(struct iface *ifa, struct proto *p)
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1999-11-17 15:50:41 +00:00
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{
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/* FIXME: Latter I'll use config - this is incorrect */
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2000-02-23 23:23:19 +00:00
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DBG("%s: Iface flags=%x.\n", p->name, ifa->flags);
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1999-11-17 15:50:41 +00:00
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if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
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(IF_MULTIACCESS|IF_MULTICAST))
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{
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2000-02-23 23:13:10 +00:00
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DBG("%s: Clasifying BCAST.\n", p->name);
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1999-11-17 15:50:41 +00:00
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return OSPF_IT_BCAST;
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}
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if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
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IF_MULTIACCESS)
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{
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2000-02-23 23:13:10 +00:00
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DBG("%s: Clasifying NBMA.\n", p->name);
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1999-11-17 15:50:41 +00:00
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return OSPF_IT_NBMA;
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}
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2000-02-23 23:13:10 +00:00
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DBG("%s: Clasifying P-T-P.\n", p->name);
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1999-11-17 15:50:41 +00:00
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return OSPF_IT_PTP;
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}
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void
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ospf_add_timers(struct ospf_iface *ifa, pool *pool)
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{
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struct proto *p;
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p=(struct proto *)(ifa->proto);
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/* Add hello timer */
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ifa->hello_timer=tm_new(pool);
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ifa->hello_timer->data=ifa;
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ifa->hello_timer->randomize=0;
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if(ifa->helloint==0) ifa->helloint=HELLOINT_D;
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ifa->hello_timer->hook=hello_timer_hook;
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ifa->hello_timer->recurrent=ifa->helloint;
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DBG("%s: Installing hello timer. (%u)\n", p->name, ifa->helloint);
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ifa->wait_timer=tm_new(pool);
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ifa->wait_timer->data=ifa;
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ifa->wait_timer->randomize=0;
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ifa->wait_timer->hook=wait_timer_hook;
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ifa->wait_timer->recurrent=0;
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if(ifa->waitint==0) ifa->waitint= WAIT_DMH*ifa->helloint;
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DBG("%s: Installing wait timer. (%u)\n", p->name, ifa->waitint);
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2000-03-29 17:18:06 +00:00
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if(ifa->rxmtint==0) ifa->rxmtint=RXMTINT_D;
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1999-11-17 15:50:41 +00:00
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}
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void
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ospf_iface_default(struct ospf_iface *ifa)
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{
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u8 i;
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|
2000-03-08 12:50:28 +00:00
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ifa->oa=NULL;
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ifa->an=0; /* FIXME This should respect config */
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1999-11-17 15:50:41 +00:00
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ifa->cost=COST_D;
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ifa->rxmtint=RXMTINT_D;
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2000-05-02 22:31:48 +00:00
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ifa->inftransdelay=INFTRANSDELAY_D;
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1999-11-17 15:50:41 +00:00
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ifa->priority=PRIORITY_D;
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ifa->helloint=HELLOINT_D;
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ifa->deadc=DEADC_D;
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|
|
ifa->autype=0;
|
|
|
|
for(i=0;i<8;i++) ifa->aukey[i]=0;
|
|
|
|
ifa->options=2;
|
|
|
|
ifa->drip=ipa_from_u32(0x00000000);
|
|
|
|
ifa->drid=0;
|
|
|
|
ifa->bdrip=ipa_from_u32(0x00000000);
|
|
|
|
ifa->bdrid=0;
|
2000-02-23 23:23:19 +00:00
|
|
|
ifa->type=ospf_iface_clasify(ifa->iface, (struct proto *)ifa->proto);
|
1999-11-17 15:50:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct ospf_iface*
|
|
|
|
find_iface(struct proto_ospf *p, struct iface *what)
|
|
|
|
{
|
|
|
|
struct ospf_iface *i;
|
|
|
|
|
|
|
|
WALK_LIST (i, p->iface_list)
|
|
|
|
if ((i)->iface == what)
|
|
|
|
return i;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
|
|
|
|
{
|
|
|
|
struct ospf_iface *ifa;
|
|
|
|
sock *mcsk;
|
|
|
|
|
|
|
|
struct ospf_config *c;
|
|
|
|
c=(struct ospf_config *)(p->cf);
|
|
|
|
|
2000-02-23 23:13:10 +00:00
|
|
|
DBG("%s: If notify called\n", p->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
if (iface->flags & IF_IGNORE)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if((flags & IF_CHANGE_UP) && is_good_iface(p, iface))
|
|
|
|
{
|
2000-02-23 23:13:10 +00:00
|
|
|
debug("%s: using interface %s.\n", p->name, iface->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
/* FIXME: Latter I'll use config - this is incorrect */
|
2000-05-16 23:59:38 +00:00
|
|
|
ifa=mb_allocz(p->pool, sizeof(struct ospf_iface));
|
1999-11-17 15:50:41 +00:00
|
|
|
ifa->proto=(struct proto_ospf *)p;
|
|
|
|
ifa->iface=iface;
|
|
|
|
ospf_iface_default(ifa);
|
|
|
|
if(ifa->type!=OSPF_IT_NBMA)
|
|
|
|
{
|
|
|
|
if((ifa->hello_sk=ospf_open_mc_socket(ifa))==NULL)
|
|
|
|
{
|
|
|
|
log("%s: Huh? could not open mc socket on interface %s?", p->name,
|
|
|
|
iface->name);
|
|
|
|
mb_free(ifa);
|
2000-06-04 19:56:06 +00:00
|
|
|
log("%s: Ignoring this interface.", p->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
return;
|
|
|
|
}
|
2000-04-17 21:10:40 +00:00
|
|
|
ifa->dr_sk=NULL;
|
1999-11-17 15:50:41 +00:00
|
|
|
|
|
|
|
if((ifa->ip_sk=ospf_open_ip_socket(ifa))==NULL)
|
|
|
|
{
|
|
|
|
log("%s: Huh? could not open ip socket on interface %s?", p->name,
|
|
|
|
iface->name);
|
|
|
|
mb_free(ifa);
|
2000-06-04 19:56:06 +00:00
|
|
|
log("%s: Ignoring this interface", p->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
init_list(&(ifa->neigh_list));
|
|
|
|
}
|
|
|
|
/* FIXME: This should read config */
|
|
|
|
ifa->helloint=0;
|
|
|
|
ifa->waitint=0;
|
|
|
|
ospf_add_timers(ifa,p->pool);
|
|
|
|
add_tail(&((struct proto_ospf *)p)->iface_list, NODE ifa);
|
2000-02-24 00:26:10 +00:00
|
|
|
ifa->state=OSPF_IS_DOWN;
|
2000-05-03 00:08:48 +00:00
|
|
|
ifa->nlsa=NULL;
|
|
|
|
ifa->fadj=0;
|
1999-11-17 15:50:41 +00:00
|
|
|
ospf_int_sm(ifa, ISM_UP);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(flags & IF_CHANGE_DOWN)
|
|
|
|
{
|
|
|
|
if((ifa=find_iface((struct proto_ospf *)p, iface))!=NULL)
|
|
|
|
{
|
2000-05-31 18:31:53 +00:00
|
|
|
debug("%s: killing interface %s.\n", p->name, iface->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
ospf_int_sm(ifa, ISM_DOWN);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(flags & IF_CHANGE_MTU)
|
|
|
|
{
|
|
|
|
if((ifa=find_iface((struct proto_ospf *)p, iface))!=NULL)
|
|
|
|
{
|
2000-05-31 18:31:53 +00:00
|
|
|
debug("%s: changing MTU on interface %s.\n", p->name, iface->name);
|
1999-11-17 15:50:41 +00:00
|
|
|
/* FIXME: change MTU */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2000-06-01 17:52:21 +00:00
|
|
|
void
|
|
|
|
ospf_iface_info(struct ospf_iface *ifa)
|
|
|
|
{
|
|
|
|
int x;
|
|
|
|
cli_msg(-1015,"Interface \"%s\":", ifa->iface->name);
|
|
|
|
cli_msg(-1015,"\tArea: %I (%u)", ifa->oa->areaid, ifa->oa->areaid);
|
|
|
|
cli_msg(-1015,"\tType: %s", ospf_it[ifa->type]);
|
|
|
|
cli_msg(-1015,"\tState: %s", ospf_is[ifa->state]);
|
|
|
|
cli_msg(-1015,"\tPriority: %u", ifa->priority);
|
|
|
|
cli_msg(-1015,"\tCost: %u", ifa->cost);
|
|
|
|
cli_msg(-1015,"\tHello timer: %u", ifa->helloint);
|
|
|
|
cli_msg(-1015,"\tWait timer: %u", ifa->waitint);
|
|
|
|
cli_msg(-1015,"\tDead timer: %u", ifa->deadc*ifa->helloint);
|
|
|
|
cli_msg(-1015,"\tRetransmit timer: %u", ifa->rxmtint);
|
|
|
|
cli_msg(-1015,"\tDesigned router (ID): %I", ifa->drid);
|
|
|
|
cli_msg(-1015,"\tDesigned router (IP): %I", ifa->drip);
|
|
|
|
cli_msg(-1015,"\tBackup designed router (ID): %I", ifa->bdrid);
|
|
|
|
cli_msg(-1015,"\tBackup designed router (IP): %I", ifa->bdrip);
|
|
|
|
}
|