mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-17 08:38:42 +00:00
hello.* reindented, code cleanup.
This commit is contained in:
Ondrej Filip
parent
8e15e048f2
commit
77539c4471
@ -9,112 +9,115 @@
|
||||
#include "ospf.h"
|
||||
|
||||
void
|
||||
ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p,
|
||||
struct ospf_iface *ifa, int size, ip_addr faddr)
|
||||
ospf_hello_receive(struct ospf_hello_packet *ps,
|
||||
struct ospf_iface *ifa, int size, ip_addr faddr)
|
||||
{
|
||||
u32 nrid, *pnrid;
|
||||
struct ospf_neighbor *neigh,*n;
|
||||
u8 i,twoway,oldpriority;
|
||||
ip_addr olddr,oldbdr;
|
||||
struct ospf_neighbor *neigh, *n;
|
||||
u8 i, twoway, oldpriority;
|
||||
ip_addr olddr, oldbdr;
|
||||
ip_addr mask;
|
||||
char *beg=": Bad OSPF hello packet from ", *rec=" received: ";
|
||||
int eligible=0;
|
||||
char *beg = "Bad OSPF hello packet from ", *rec = " received: ";
|
||||
int eligible = 0;
|
||||
pool *pool;
|
||||
struct proto *p = (struct proto *) ifa->proto;
|
||||
|
||||
nrid=ntohl(((struct ospf_packet *)ps)->routerid);
|
||||
nrid = ntohl(((struct ospf_packet *) ps)->routerid);
|
||||
|
||||
OSPF_TRACE(D_PACKETS, "Received hello from %I via %s",faddr,ifa->iface->name);
|
||||
mask=ps->netmask;
|
||||
OSPF_TRACE(D_PACKETS, "Received hello from %I via %s", faddr,
|
||||
ifa->iface->name);
|
||||
mask = ps->netmask;
|
||||
ipa_ntoh(mask);
|
||||
|
||||
if((unsigned)ipa_mklen(mask)!=ifa->iface->addr->pxlen)
|
||||
if ((unsigned) ipa_mklen(mask) != ifa->iface->addr->pxlen)
|
||||
{
|
||||
log("%s%s%I%sbad netmask %I.", p->name, beg, nrid, rec,
|
||||
mask);
|
||||
return;
|
||||
}
|
||||
|
||||
if(ntohs(ps->helloint)!=ifa->helloint)
|
||||
{
|
||||
log("%s%s%I%shello interval mismatch.", p->name, beg, faddr, rec);
|
||||
log(L_ERR, "%s%I%sbad netmask %I.", beg, nrid, rec, mask);
|
||||
return;
|
||||
}
|
||||
|
||||
if(ntohl(ps->deadint)!=ifa->helloint*ifa->deadc)
|
||||
if (ntohs(ps->helloint) != ifa->helloint)
|
||||
{
|
||||
log("%s%s%I%sdead interval mismatch.", p->name, beg, faddr, rec);
|
||||
log(L_WARN "%s%I%shello interval mismatch.", beg, faddr, rec);
|
||||
return;
|
||||
}
|
||||
|
||||
if(ps->options!=ifa->options)
|
||||
if (ntohl(ps->deadint) != ifa->helloint * ifa->deadc)
|
||||
{
|
||||
log("%s%s%I%soptions mismatch.", p->name, beg, faddr, rec);
|
||||
log(L_ERR "%s%I%sdead interval mismatch.", beg, faddr, rec);
|
||||
return;
|
||||
}
|
||||
|
||||
if((n=find_neigh(ifa, nrid))==NULL)
|
||||
if (ps->options != ifa->options)
|
||||
{
|
||||
if((ifa->type==OSPF_IT_NBMA))
|
||||
log(L_ERR "%s%I%soptions mismatch.", beg, faddr, rec);
|
||||
return;
|
||||
}
|
||||
|
||||
if ((n = find_neigh(ifa, nrid)) == NULL)
|
||||
{
|
||||
if ((ifa->type == OSPF_IT_NBMA))
|
||||
{
|
||||
struct nbma_node *nn;
|
||||
int found=0;
|
||||
int found = 0;
|
||||
|
||||
WALK_LIST(nn,ifa->nbma_list)
|
||||
WALK_LIST(nn, ifa->nbma_list)
|
||||
{
|
||||
if(ipa_compare(faddr,nn->ip)==0)
|
||||
if (ipa_compare(faddr, nn->ip) == 0)
|
||||
{
|
||||
found=1;
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if((found==0)&&(ifa->strictnbma))
|
||||
if ((found == 0) && (ifa->strictnbma))
|
||||
{
|
||||
log("%s: Ignoring new neighbor: %I on %s.", p->name, faddr,
|
||||
ifa->iface->name);
|
||||
log(L_WARN "Ignoring new neighbor: %I on %s.", faddr,
|
||||
ifa->iface->name);
|
||||
return;
|
||||
}
|
||||
if(found)
|
||||
if (found)
|
||||
{
|
||||
eligible=nn->eligible;
|
||||
if(((ps->priority==0)&&eligible)||((ps->priority>0)&&(eligible==0)))
|
||||
{
|
||||
log("%s: Eligibility mismatch for neighbor: %I on %s", p->name,
|
||||
faddr, ifa->iface->name);
|
||||
eligible = nn->eligible;
|
||||
if (((ps->priority == 0) && eligible)
|
||||
|| ((ps->priority > 0) && (eligible == 0)))
|
||||
{
|
||||
log(L_ERR "Eligibility mismatch for neighbor: %I on %s",
|
||||
faddr, ifa->iface->name);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s.", faddr,
|
||||
ifa->iface->name);
|
||||
ifa->iface->name);
|
||||
|
||||
n = ospf_neighbor_new(ifa);
|
||||
|
||||
n->rid=nrid;
|
||||
n->ip=faddr;
|
||||
n->dr=ps->dr;
|
||||
n->rid = nrid;
|
||||
n->ip = faddr;
|
||||
n->dr = ps->dr;
|
||||
ipa_ntoh(n->dr);
|
||||
n->bdr=ps->bdr;
|
||||
n->bdr = ps->bdr;
|
||||
ipa_ntoh(n->bdr);
|
||||
n->priority=ps->priority;
|
||||
n->options=ps->options;
|
||||
n->priority = ps->priority;
|
||||
n->options = ps->options;
|
||||
}
|
||||
ospf_neigh_sm(n, INM_HELLOREC);
|
||||
|
||||
pnrid=(u32 *)((struct ospf_hello_packet *)(ps+1));
|
||||
pnrid = (u32 *) ((struct ospf_hello_packet *) (ps + 1));
|
||||
|
||||
twoway=0;
|
||||
for(i=0;i<size-(sizeof(struct ospf_hello_packet));i++)
|
||||
twoway = 0;
|
||||
for (i = 0; i < size - (sizeof(struct ospf_hello_packet)); i++)
|
||||
{
|
||||
if(ntohl(*(pnrid+i))==p->cf->global->router_id)
|
||||
if (ntohl(*(pnrid + i)) == p->cf->global->router_id)
|
||||
{
|
||||
DBG("%s: Twoway received from %I\n", p->name, faddr);
|
||||
ospf_neigh_sm(n, INM_2WAYREC);
|
||||
twoway=1;
|
||||
twoway = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if(!twoway) ospf_neigh_sm(n, INM_1WAYREC);
|
||||
if (!twoway)
|
||||
ospf_neigh_sm(n, INM_1WAYREC);
|
||||
|
||||
olddr = n->dr;
|
||||
n->dr = ipa_ntoh(ps->dr);
|
||||
@ -124,39 +127,43 @@ ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p,
|
||||
n->priority = ps->priority;
|
||||
|
||||
/* Check priority change */
|
||||
if(n->state>=NEIGHBOR_2WAY)
|
||||
if (n->state >= NEIGHBOR_2WAY)
|
||||
{
|
||||
if(n->priority!=oldpriority) ospf_int_sm(ifa, ISM_NEICH);
|
||||
if (n->priority != oldpriority)
|
||||
ospf_int_sm(ifa, ISM_NEICH);
|
||||
|
||||
/* Router is declaring itself ad DR and there is no BDR */
|
||||
if((ipa_compare(n->ip,n->dr)==0) && (ipa_to_u32(n->bdr)==0)
|
||||
&& (n->state!=NEIGHBOR_FULL))
|
||||
if ((ipa_compare(n->ip, n->dr) == 0) && (ipa_to_u32(n->bdr) == 0)
|
||||
&& (n->state != NEIGHBOR_FULL))
|
||||
ospf_int_sm(ifa, ISM_BACKS);
|
||||
|
||||
/* Neighbor is declaring itself as BDR */
|
||||
if((ipa_compare(n->ip,n->bdr)==0) && (n->state!=NEIGHBOR_FULL))
|
||||
if ((ipa_compare(n->ip, n->bdr) == 0) && (n->state != NEIGHBOR_FULL))
|
||||
ospf_int_sm(ifa, ISM_BACKS);
|
||||
|
||||
/* Neighbor is newly declaring itself as DR or BDR */
|
||||
if(((ipa_compare(n->ip,n->dr)==0) && (ipa_compare(n->dr,olddr)!=0))
|
||||
|| ((ipa_compare(n->ip,n->bdr)==0) && (ipa_compare(n->bdr,oldbdr)!=0)))
|
||||
if (((ipa_compare(n->ip, n->dr) == 0) && (ipa_compare(n->dr, olddr) != 0))
|
||||
|| ((ipa_compare(n->ip, n->bdr) == 0)
|
||||
&& (ipa_compare(n->bdr, oldbdr) != 0)))
|
||||
ospf_int_sm(ifa, ISM_NEICH);
|
||||
|
||||
/* Neighbor is no more declaring itself as DR or BDR */
|
||||
if(((ipa_compare(n->ip,olddr)==0) && (ipa_compare(n->dr,olddr)!=0))
|
||||
|| ((ipa_compare(n->ip,oldbdr)==0) && (ipa_compare(n->bdr,oldbdr)!=0)))
|
||||
if (((ipa_compare(n->ip, olddr) == 0) && (ipa_compare(n->dr, olddr) != 0))
|
||||
|| ((ipa_compare(n->ip, oldbdr) == 0)
|
||||
&& (ipa_compare(n->bdr, oldbdr) != 0)))
|
||||
ospf_int_sm(ifa, ISM_NEICH);
|
||||
}
|
||||
|
||||
if(ifa->type!=OSPF_IT_NBMA)
|
||||
if (ifa->type != OSPF_IT_NBMA)
|
||||
{
|
||||
if((ifa->priority==0)&&(n->priority>0)) ospf_hello_send(NULL, 0, n);
|
||||
if ((ifa->priority == 0) && (n->priority > 0))
|
||||
ospf_hello_send(NULL, 0, n);
|
||||
}
|
||||
ospf_neigh_sm(n, INM_HELLOREC);
|
||||
}
|
||||
|
||||
void
|
||||
ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn)
|
||||
ospf_hello_send(timer * timer, int poll, struct ospf_neighbor *dirn)
|
||||
{
|
||||
struct ospf_iface *ifa;
|
||||
struct ospf_hello_packet *pkt;
|
||||
@ -167,104 +174,109 @@ ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn)
|
||||
u32 *pp;
|
||||
u8 i;
|
||||
|
||||
if(timer==NULL) ifa=dirn->ifa;
|
||||
else ifa=(struct ospf_iface *)timer->data;
|
||||
if (timer == NULL)
|
||||
ifa = dirn->ifa;
|
||||
else
|
||||
ifa = (struct ospf_iface *) timer->data;
|
||||
|
||||
if(ifa->stub) return; /* Don't send any packet on stub iface */
|
||||
if (ifa->stub)
|
||||
return; /* Don't send any packet on stub iface */
|
||||
|
||||
p=(struct proto *)(ifa->proto);
|
||||
p = (struct proto *) (ifa->proto);
|
||||
DBG("%s: Hello/Poll timer fired on interface %s.\n",
|
||||
p->name, ifa->iface->name);
|
||||
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->type != OSPF_IT_NBMA)
|
||||
{
|
||||
pkt=(struct ospf_hello_packet *)(ifa->hello_sk->tbuf);
|
||||
pkt = (struct ospf_hello_packet *) (ifa->hello_sk->tbuf);
|
||||
}
|
||||
else
|
||||
else
|
||||
{
|
||||
pkt=(struct ospf_hello_packet *)(ifa->ip_sk->tbuf);
|
||||
pkt = (struct ospf_hello_packet *) (ifa->ip_sk->tbuf);
|
||||
}
|
||||
|
||||
/* Now fill ospf_hello header */
|
||||
op=(struct ospf_packet *)pkt;
|
||||
op = (struct ospf_packet *) pkt;
|
||||
|
||||
fill_ospf_pkt_hdr(ifa, pkt, HELLO_P);
|
||||
|
||||
pkt->netmask=ipa_mkmask(ifa->iface->addr->pxlen);
|
||||
pkt->netmask = ipa_mkmask(ifa->iface->addr->pxlen);
|
||||
ipa_hton(pkt->netmask);
|
||||
pkt->helloint=ntohs(ifa->helloint);
|
||||
pkt->options=ifa->options;
|
||||
pkt->priority=ifa->priority;
|
||||
pkt->deadint=htonl(ifa->deadc*ifa->helloint);
|
||||
pkt->dr=ifa->drip;
|
||||
pkt->helloint = ntohs(ifa->helloint);
|
||||
pkt->options = ifa->options;
|
||||
pkt->priority = ifa->priority;
|
||||
pkt->deadint = htonl(ifa->deadc * ifa->helloint);
|
||||
pkt->dr = ifa->drip;
|
||||
ipa_hton(pkt->dr);
|
||||
pkt->bdr=ifa->bdrip;
|
||||
pkt->bdr = ifa->bdrip;
|
||||
ipa_hton(pkt->bdr);
|
||||
|
||||
/* Fill all neighbors */
|
||||
i=0;
|
||||
pp=(u32 *)(((u8 *)pkt)+sizeof(struct ospf_hello_packet));
|
||||
WALK_LIST (neigh, ifa->neigh_list)
|
||||
i = 0;
|
||||
pp = (u32 *) (((u8 *) pkt) + sizeof(struct ospf_hello_packet));
|
||||
WALK_LIST(neigh, ifa->neigh_list)
|
||||
{
|
||||
*(pp+i)=htonl(neigh->rid);
|
||||
*(pp + i) = htonl(neigh->rid);
|
||||
i++;
|
||||
}
|
||||
|
||||
length=sizeof(struct ospf_hello_packet)+i*sizeof(u32);
|
||||
op->length=htons(length);
|
||||
length = sizeof(struct ospf_hello_packet) + i * sizeof(u32);
|
||||
op->length = htons(length);
|
||||
|
||||
ospf_pkt_finalize(ifa, op);
|
||||
|
||||
/* And finally send it :-) */
|
||||
if(ifa->type!=OSPF_IT_NBMA)
|
||||
/* And finally send it :-) */
|
||||
if (ifa->type != OSPF_IT_NBMA)
|
||||
{
|
||||
sk_send(ifa->hello_sk,length);
|
||||
sk_send(ifa->hello_sk, length);
|
||||
}
|
||||
else /* NBMA */
|
||||
else /* NBMA */
|
||||
{
|
||||
struct ospf_neighbor *n1;
|
||||
struct nbma_node *nb;
|
||||
int send;
|
||||
|
||||
if(timer==NULL) /* Response to received hello */
|
||||
if (timer == NULL) /* Response to received hello */
|
||||
{
|
||||
sk_send_to(ifa->ip_sk, length, dirn->ip, OSPF_PROTO);
|
||||
}
|
||||
else
|
||||
{
|
||||
int toall=0;
|
||||
int meeli=0;
|
||||
if(ifa->state>OSPF_IS_DROTHER) toall=1;
|
||||
if(ifa->priority>0) meeli=1;
|
||||
int toall = 0;
|
||||
int meeli = 0;
|
||||
if (ifa->state > OSPF_IS_DROTHER)
|
||||
toall = 1;
|
||||
if (ifa->priority > 0)
|
||||
meeli = 1;
|
||||
|
||||
WALK_LIST(nb,ifa->nbma_list)
|
||||
WALK_LIST(nb, ifa->nbma_list)
|
||||
{
|
||||
send=1;
|
||||
WALK_LIST(n1, ifa->neigh_list)
|
||||
{
|
||||
if(ipa_compare(nb->ip,n1->ip)==0)
|
||||
{
|
||||
send=0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if((poll==1)&&(send))
|
||||
send = 1;
|
||||
WALK_LIST(n1, ifa->neigh_list)
|
||||
{
|
||||
if(toall||(meeli&&nb->eligible))
|
||||
sk_send_to(ifa->ip_sk, length, nb->ip, OSPF_PROTO);
|
||||
if (ipa_compare(nb->ip, n1->ip) == 0)
|
||||
{
|
||||
send = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if ((poll == 1) && (send))
|
||||
{
|
||||
if (toall || (meeli && nb->eligible))
|
||||
sk_send_to(ifa->ip_sk, length, nb->ip, OSPF_PROTO);
|
||||
}
|
||||
}
|
||||
if(poll==0)
|
||||
if (poll == 0)
|
||||
{
|
||||
WALK_LIST(n1,ifa->neigh_list)
|
||||
{
|
||||
if(toall||(n1->rid==ifa->drid)||(n1->rid==ifa->bdrid)||
|
||||
(meeli&&(n1->priority>0)))
|
||||
sk_send_to(ifa->ip_sk, length, n1->ip, OSPF_PROTO);
|
||||
}
|
||||
WALK_LIST(n1, ifa->neigh_list)
|
||||
{
|
||||
if (toall || (n1->rid == ifa->drid) || (n1->rid == ifa->bdrid) ||
|
||||
(meeli && (n1->priority > 0)))
|
||||
sk_send_to(ifa->ip_sk, length, n1->ip, OSPF_PROTO);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
OSPF_TRACE(D_PACKETS, "Hello sent via %s",ifa->iface->name);
|
||||
OSPF_TRACE(D_PACKETS, "Hello sent via %s", ifa->iface->name);
|
||||
}
|
||||
|
||||
@ -10,8 +10,8 @@
|
||||
#ifndef _BIRD_OSPF_HELLO_H_
|
||||
#define _BIRD_OSPF_HELLO_H_
|
||||
|
||||
void ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p,
|
||||
struct ospf_iface *ifa, int size, ip_addr faddr);
|
||||
void ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn);
|
||||
void ospf_hello_receive(struct ospf_hello_packet *ps,
|
||||
struct ospf_iface *ifa, int size, ip_addr faddr);
|
||||
void ospf_hello_send(timer * timer, int poll, struct ospf_neighbor *dirn);
|
||||
|
||||
#endif /* _BIRD_OSPF_HELLO_H_ */
|
||||
|
||||
@ -175,7 +175,7 @@ ospf_rx_hook (sock * sk, int size)
|
||||
{
|
||||
case HELLO_P:
|
||||
DBG ("%s: Hello received.\n", p->name);
|
||||
ospf_hello_receive((struct ospf_hello_packet *) ps, p, ifa, size,
|
||||
ospf_hello_receive((struct ospf_hello_packet *) ps, ifa, size,
|
||||
sk->faddr);
|
||||
break;
|
||||
case DBDES_P:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user