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Detecting of new neighbor added. It starts inactivity timer.

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This commit is contained in:
Ondrej Filip 1999-06-01 16:35:18 +00:00
parent bd7f1081f2
commit cd70d93470
2 changed files with 63 additions and 13 deletions
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68
proto/ospf/ospf.c
View file

@ -23,17 +23,36 @@
#include "ospf.h"
void
neighbor_timer_hook(timer *timer)
{
struct ospf_neighbor *n;
struct ospf_iface *ifa;
struct proto *p;
n=(struct ospf_neighbor *)timer->data;
ifa=n->ifa;
p=(struct proto *)(ifa->proto);
debug("%s: Inactivity timer fired on interface %s for neighbor %d.\n",
p->name, ifa->iface->name, n->rid);
}
void
ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
struct ospf_iface *ifa)
{
char sip[100]; /* FIXME: Should be smaller */
u32 nrid;
struct ospf_neighbor *neigh,*n;
int i;
nrid=ntohl(((struct ospf_packet *)ps)->routerid);
if(ipa_mklen(ipa_ntoh(ps->netmask))!=ifa->iface->addr->pxlen)
{
ip_ntop(ps->netmask,sip);
log("%s: Bad OSPF packet from %d received: bad netmask %s.",
p->name, ntohl(((struct ospf_packet *)ps)->routerid), sip);
p->name, nrid, sip);
log("%s: Discarding",p->name);
return;
}
@ -41,7 +60,7 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
if(ntohs(ps->helloint)!=ifa->helloint)
{
log("%s: Bad OSPF packet from %d received: hello interval mismatch.",
p->name, ntohl(((struct ospf_packet *)ps)->routerid));
p->name, nrid);
log("%s: Discarding",p->name);
return;
}
@ -49,19 +68,53 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
if(ntohl(ps->deadint)!=ifa->helloint*ifa->deadc)
{
log("%s: Bad OSPF packet from %d received: dead interval mismatch.",
p->name, ntohl(((struct ospf_packet *)ps)->routerid));
p->name, nrid);
log("%s: Discarding",p->name);
return;
}
if(ps->options!=ifa->options)
{
log("%s: Bad OSPF packet from %d received: options mismatch.",
p->name, ntohl(((struct ospf_packet *)ps)->routerid));
p->name, nrid);
log("%s: Discarding",p->name);
return;
}
n=NULL;
WALK_LIST (neigh, ifa->neigh_list)
{
if(neigh->rid==nrid)
{
n=neigh;
break;
}
}
if(n==NULL)
{
log("%s: New neighbor found: %d.",p->name,nrid);
n=mb_alloc(p->pool, sizeof(struct ospf_neighbor));
add_tail(&ifa->neigh_list, NODE n);
n->inactim=tm_new(p->pool);
n->inactim->data=n;
n->inactim->randomize=0;
n->inactim->hook=neighbor_timer_hook;
n->inactim->recurrent=ifa->deadc*ifa->helloint;
n->inactim->expires=0;
tm_start(ifa->hello_timer,ifa->deadc*ifa->helloint);
DBG("%s: Installing inactivity timer.\n", p->name);
n->state=NEIGHBOR_INIT;
n->rid=nrid;
n->dr=ntohl(ps->dr);
n->bdr=ntohl(ps->bdr);
n->priority=ps->priority;
n->options=ps->options;
}
/* XXXX */
switch(ifa->state)
{
case OSPF_IS_DOWN:
@ -323,8 +376,7 @@ hello_timer_hook(timer *timer)
p->name, ifa->iface->name);
/* Now we should send a hello packet */
/* First a common packet header */
//if(ifa->type!=OSPF_IT_NBMA)
if(ifa->hello_sk!=NULL)
if(ifa->type!=OSPF_IT_NBMA)
{
/* Now fill ospf_hello header */
pkt=(struct ospf_hello_packet *)(ifa->hello_sk->tbuf);
@ -359,9 +411,8 @@ hello_timer_hook(timer *timer)
op->checksum=ipsum_calculate(op,sizeof(struct ospf_packet)-8,
&(pkt->netmask),length-sizeof(struct ospf_packet),NULL);
/* And finally send it :-) */
sk_send(ifa->hello_sk,length);
/* XXXX */
}
}
@ -434,7 +485,6 @@ ospf_add_timers(struct ospf_iface *ifa, pool *pool, int wait)
DBG(": Installing wait timer.\n");
}
else ifa->state=OSPF_IS_PTP;
}
void

8
proto/ospf/ospf.h
View file

@ -113,9 +113,9 @@ struct ospf_neighbor
struct ospf_iface *ifa;
int state;
#define NEIGHBOR_DOWN 0
#define NEIGHBOR_INIT 1
#define NEIGHBOR_2WAY 2
#define NEIGHBOR_ATTEMPT 3
#define NEIGHBOR_ATTEMPT 1
#define NEIGHBOR_INIT 2
#define NEIGHBOR_2WAY 3
#define NEIGHBOR_EXSTART 4
#define NEIGHBOR_EXCHANGE 5
#define NEIGHBOR_LOADING 6
@ -125,7 +125,7 @@ struct ospf_neighbor
u32 dds; /* DD Sequence number being sentg */
u32 ddr; /* last Dat Des packet */
u32 rid; /* Router ID */
byte pri; /* Priority */
byte priority; /* Priority */
byte options; /* Options */
u32 dr; /* Neigbour's idea of DR */
u32 bdr; /* Neigbour's idea of BDR */