328 lines
6.5 KiB
C
328 lines
6.5 KiB
C
/*
|
|
* BIRD -- OSPF
|
|
*
|
|
* (c) 1999 Ondrej Filip <feela@network.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#define LOCAL_DEBUG
|
|
|
|
#include <string.h>
|
|
|
|
#include "nest/bird.h"
|
|
#include "nest/iface.h"
|
|
#include "nest/protocol.h"
|
|
#include "nest/route.h"
|
|
#include "conf/conf.h"
|
|
#include "lib/ip.h"
|
|
#include "lib/socket.h"
|
|
#include "lib/lists.h"
|
|
#include "lib/timer.h"
|
|
|
|
#include "ospf.h"
|
|
|
|
int
|
|
ospf_rx_hook(sock *sk, int size)
|
|
{
|
|
DBG(" OSPF: RX_Hook called on interface ");
|
|
DBG(sk->iface->name);
|
|
DBG(".\n");
|
|
return(1);
|
|
}
|
|
|
|
void
|
|
ospf_tx_hook(sock *sk)
|
|
{
|
|
DBG(" OSPF: TX_Hook called on interface ");
|
|
DBG(sk->iface->name);
|
|
DBG(".\n");
|
|
}
|
|
|
|
void
|
|
ospf_err_hook(sock *sk, int err)
|
|
{
|
|
DBG(" OSPF: Err_Hook called on interface ");
|
|
DBG(sk->iface->name);
|
|
DBG(".\n");
|
|
}
|
|
|
|
/* This will change ! */
|
|
sock *
|
|
ospf_open_socket(struct proto *p, struct ospf_iface *ifa)
|
|
{
|
|
sock *mcsk;
|
|
|
|
/* No NBMA networks now */
|
|
|
|
if(ifa->iface->flags & IF_MULTICAST)
|
|
{
|
|
mcsk=sk_new(p->pool);
|
|
mcsk->type=SK_IP_MC;
|
|
mcsk->dport=OSPF_PROTO;
|
|
mcsk->saddr=AllSPFRouters;
|
|
mcsk->daddr=AllSPFRouters;
|
|
mcsk->ttl=1;
|
|
mcsk->rx_hook=ospf_rx_hook;
|
|
mcsk->tx_hook=ospf_tx_hook;
|
|
mcsk->err_hook=ospf_err_hook;
|
|
mcsk->iface=ifa->iface;
|
|
mcsk->rbsize=ifa->iface->mtu;
|
|
mcsk->tbsize=ifa->iface->mtu;
|
|
if(sk_open(mcsk)!=0)
|
|
{
|
|
DBG(" OSPF: SK_OPEN: failed\n");
|
|
return(NULL);
|
|
}
|
|
DBG(" OSPF: SK_OPEN: open\n");
|
|
return(mcsk);
|
|
}
|
|
else return(NULL);
|
|
}
|
|
|
|
/*
|
|
* This will later decide, wheter use iface for OSPF or not
|
|
* depending on config
|
|
*/
|
|
int
|
|
is_good_iface(struct proto *p, struct iface *iface)
|
|
{
|
|
if(iface->flags & IF_UP)
|
|
{
|
|
if(!(iface->flags & IF_IGNORE)) return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Of course, it's NOT true now */
|
|
int
|
|
ospf_iface_clasify(struct iface *ifa)
|
|
{
|
|
/* FIXME: Latter I'll use config - this is incorrect */
|
|
if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
|
|
(IF_MULTIACCESS|IF_MULTICAST))
|
|
{
|
|
DBG(" OSPF: Clasifying BROADCAST.\n");
|
|
return OSPF_IT_BROADCAST;
|
|
}
|
|
if((ifa->flags & (IF_MULTIACCESS|IF_MULTICAST))==
|
|
IF_MULTIACCESS)
|
|
{
|
|
DBG(" OSPF: Clasifying NBMA.\n");
|
|
return OSPF_IT_NBMA;
|
|
}
|
|
DBG(" OSPF: Clasifying P-T-P.\n");
|
|
return OSPF_IT_PTP;
|
|
}
|
|
|
|
void
|
|
hello_timer_hook(timer *timer)
|
|
{
|
|
struct ospf_iface *ifa;
|
|
|
|
ifa=(struct ospf_iface *)timer->data;
|
|
debug(" OSPF: Hello timer fired on interface %s.\n",
|
|
ifa->iface->name);
|
|
}
|
|
|
|
void
|
|
add_hello_timer(struct ospf_iface *ifa)
|
|
{
|
|
if(ifa->helloint==0) ifa->helloint=HELLOINT_D;
|
|
|
|
ifa->timer->hook=hello_timer_hook;
|
|
ifa->timer->recurrent=ifa->helloint;
|
|
ifa->timer->expires=0;
|
|
tm_start(ifa->timer,0);
|
|
DBG(" OSPF: Installing hello timer.\n");
|
|
}
|
|
|
|
void
|
|
wait_timer_hook(timer *timer)
|
|
{
|
|
struct ospf_iface *ifa;
|
|
|
|
ifa=(struct ospf_iface *)timer->data;
|
|
debug(" OSPF: Wait timer fired on interface %s.\n",
|
|
ifa->iface->name);
|
|
if(ifa->state=OSPF_IS_WAITING)
|
|
{
|
|
/*
|
|
* Wait time fired. Now we must change state
|
|
* to DR or DROTHER depending on priority
|
|
*/
|
|
if(ifa->priority!=0)
|
|
{
|
|
debug(" OSPF: Changing state into DR.\n");
|
|
ifa->state=OSPF_IS_DR;
|
|
ifa->drip=ifa->iface->ip;
|
|
/* FIXME: Set ifa->drid */
|
|
}
|
|
else
|
|
{
|
|
debug(" OSPF: Changing state into DROTHER.\n");
|
|
ifa->state=OSPF_IS_DROTHER;
|
|
}
|
|
add_hello_timer(ifa);
|
|
}
|
|
/* FIXME: Destroy timer */
|
|
}
|
|
|
|
void
|
|
add_wait_timer(struct ospf_iface *ifa,pool *pool, int wait)
|
|
{
|
|
ifa->timer=tm_new(pool);
|
|
ifa->timer->data=ifa;
|
|
ifa->timer->randomize=1;
|
|
if((ifa->type!=OSPF_IT_PTP))
|
|
{
|
|
ifa->timer->hook=wait_timer_hook;
|
|
ifa->timer->recurrent=0;
|
|
ifa->timer->expires=0;
|
|
tm_start(ifa->timer,(wait!=0 ? wait : WAIT_D));
|
|
DBG(" OSPF: Installing wait timer.\n");
|
|
}
|
|
else
|
|
{
|
|
add_hello_timer(ifa);
|
|
}
|
|
}
|
|
|
|
void
|
|
ospf_iface_default(struct ospf_iface *ifa)
|
|
{
|
|
int i;
|
|
|
|
ifa->area=0;
|
|
ifa->cost=COST_D;
|
|
ifa->rxmtint=RXMTINT_D;
|
|
ifa->iftransdelay=IFTRANSDELAY_D;
|
|
ifa->priority=PRIORITY_D;
|
|
ifa->helloint=HELLOINT_D;
|
|
ifa->deadint=DEADINT_D;
|
|
ifa->autype=0;
|
|
for(i=0;i<8;i++) ifa->aukey[i]=0;
|
|
ifa->options=0;
|
|
ifa->drip=ipa_from_u32(0x00000000);
|
|
ifa->drid=0;
|
|
ifa->bdrip=ipa_from_u32(0x00000000);
|
|
ifa->bdrid=0;
|
|
ifa->type=ospf_iface_clasify(ifa->iface);
|
|
}
|
|
|
|
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 *new, struct iface *old)
|
|
{
|
|
struct ospf_iface *ifa;
|
|
sock *mcsk, *newsk;
|
|
struct ospf_sock *osk;
|
|
|
|
struct ospf_config *c;
|
|
c=(struct ospf_config *)(p->cf);
|
|
|
|
|
|
DBG(" OSPF: If notify called\n");
|
|
|
|
if((flags & IF_CHANGE_UP) && is_good_iface(p, new))
|
|
{
|
|
debug(" OSPF: using interface %s.\n", new->name);
|
|
/* FIXME: Latter I'll use config - this is incorrect */
|
|
ifa=mb_alloc(p->pool, sizeof(struct ospf_iface));
|
|
ifa->iface=new;
|
|
add_tail(&((struct proto_ospf *)p)->iface_list, NODE ifa);
|
|
ospf_iface_default(ifa);
|
|
/* FIXME: This should read config */
|
|
add_wait_timer(ifa,p->pool,0);
|
|
init_list(&(ifa->sk_list));
|
|
if((mcsk=ospf_open_socket(p, ifa))!=NULL)
|
|
{
|
|
osk=(struct ospf_sock *)mb_alloc(p->pool, sizeof(struct ospf_sock));
|
|
osk->sk=mcsk;
|
|
add_tail(&(ifa->sk_list),NODE osk);
|
|
}
|
|
}
|
|
|
|
if(flags & IF_CHANGE_DOWN)
|
|
{
|
|
if((ifa=find_iface((struct proto_ospf *)p, old))!=NULL)
|
|
{
|
|
debug(" OSPF: killing interface %s.\n", old->name);
|
|
}
|
|
}
|
|
|
|
if(flags & IF_CHANGE_MTU)
|
|
{
|
|
if((ifa=find_iface((struct proto_ospf *)p, old))!=NULL)
|
|
{
|
|
debug(" OSPF: changing MTU on interface %s.\n", old->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
ospf_start(struct proto *p)
|
|
{
|
|
DBG(" OSPF: Start\n");
|
|
|
|
p->if_notify=ospf_if_notify;
|
|
|
|
return PS_UP;
|
|
}
|
|
|
|
static void
|
|
ospf_dump(struct proto *p)
|
|
{
|
|
char areastr[20];
|
|
struct ospf_config *c = (void *) p->cf;
|
|
|
|
DBG(" OSPF: Dump.\n");
|
|
debug(" -AreaID: %d\n", c->area );
|
|
}
|
|
|
|
static struct proto *
|
|
ospf_init(struct proto_config *c)
|
|
{
|
|
struct proto *p = proto_new(c, sizeof(struct proto_ospf));
|
|
|
|
DBG(" OSPF: Init.\n");
|
|
p->neigh_notify = NULL;
|
|
p->if_notify = NULL;
|
|
init_list(&((struct proto_ospf *)p)->iface_list);
|
|
return p;
|
|
}
|
|
|
|
static void
|
|
ospf_preconfig(struct protocol *p, struct config *c)
|
|
{
|
|
DBG( " OSPF: preconfig\n" );
|
|
}
|
|
|
|
static void
|
|
ospf_postconfig(struct proto_config *c)
|
|
{
|
|
DBG( " OSPF: postconfig\n" );
|
|
}
|
|
|
|
|
|
struct protocol proto_ospf = {
|
|
name: "OSPF",
|
|
init: ospf_init,
|
|
dump: ospf_dump,
|
|
start: ospf_start,
|
|
preconfig: ospf_preconfig,
|
|
postconfig: ospf_postconfig,
|
|
|
|
};
|
|
|