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Ehm, my (B)DR election was based on router id, but RFC says ip!

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This commit is contained in:
Ondrej Filip 2000-06-08 01:49:19 +00:00
parent 17e29574bc
commit 423230f2f1
3 changed files with 40 additions and 42 deletions
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19
proto/ospf/hello.c
View file

@ -53,7 +53,7 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
u32 nrid, *pnrid;
struct ospf_neighbor *neigh,*n;
u8 i,twoway,oldpriority;
u32 olddr,oldbdr;
ip_addr olddr,oldbdr;
char *beg=": Bad OSPF hello packet from ", *rec=" received: ";
nrid=ntohl(((struct ospf_packet *)ps)->routerid);
@ -153,21 +153,22 @@ ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
if(n->priority!=oldpriority) ospf_int_sm(ifa, ISM_NEICH);
/* Router is declaring itself ad DR and there is no BDR */
if((n->rid==n->dr) && (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((n->rid==n->bdr) && (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(((n->rid==n->dr) && (n->dr!=olddr)) || ((n->rid==n->bdr) &&
(n->bdr!=oldbdr)))
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(((n->rid==olddr) && (n->dr!=olddr)) || ((n->rid==oldbdr) &&
(n->bdr!=oldbdr)))
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);
}
@ -212,8 +213,8 @@ hello_timer_hook(timer *timer)
pkt->options=ifa->options;
pkt->priority=ifa->priority;
pkt->deadint=htonl(ifa->deadc*ifa->helloint);
pkt->dr=htonl(ifa->drid);
pkt->bdr=htonl(ifa->bdrid);
pkt->dr=htonl(ifa->drip);
pkt->bdr=htonl(ifa->bdrip);
/* Fill all neighbors */
i=0;

55
proto/ospf/neighbor.c
View file

@ -100,9 +100,9 @@ electbdr(list nl)
{
if(neigh->state>=NEIGHBOR_2WAY) /* Higher than 2WAY */
if(neigh->priority>0) /* Eligible */
if(neigh->rid!=neigh->dr) /* And not declaring itself DR */
if(ipa_compare(neigh->ip,neigh->dr)!=0) /* And not decl. itself DR */
{
if(neigh->rid==neigh->bdr) /* Declaring BDR */
if(ipa_compare(neigh->ip,neigh->bdr)==0) /* Declaring BDR */
{
if(n1!=NULL)
{
@ -145,7 +145,7 @@ electdr(list nl)
{
if(neigh->state>=NEIGHBOR_2WAY) /* Higher than 2WAY */
if(neigh->priority>0) /* Eligible */
if(neigh->rid==neigh->dr) /* And declaring itself DR */
if(ipa_compare(neigh->ip,neigh->dr)==0) /* And declaring itself DR */
{
if(n!=NULL)
{
@ -331,19 +331,20 @@ void
bdr_election(struct ospf_iface *ifa)
{
struct ospf_neighbor *neigh,*ndr,*nbdr,me,*tmp;
u32 myid, ndrid, nbdrid;
u32 myid;
ip_addr ndrip, nbdrip;
int doadj;
struct proto *p=&ifa->proto->proto;
DBG("%s: (B)DR election.\n",p->name);
DBG("(B)DR election.\n");
myid=p->cf->global->router_id;
me.state=NEIGHBOR_2WAY;
me.rid=myid;
me.priority=ifa->priority;
me.dr=ifa->drid;
me.bdr=ifa->bdrid;
me.dr=ifa->drip;
me.bdr=ifa->bdrip;
me.ip=ifa->iface->addr->ip;
add_tail(&ifa->neigh_list, NODE &me);
@ -358,53 +359,49 @@ bdr_election(struct ospf_iface *ifa)
|| ((ifa->bdrid==myid) && (nbdr!=&me))
|| ((ifa->bdrid!=myid) && (nbdr==&me)))
{
if(ndr==NULL) ifa->drid=me.dr=0;
else ifa->drid=me.dr=ndr->rid;
if(ndr==NULL) ifa->drip=me.dr=ipa_from_u32(0);
else ifa->drip=me.dr=ndr->ip;
if(nbdr==NULL) ifa->bdrid=me.bdr=0;
else ifa->bdrid=me.bdr=nbdr->rid;
if(nbdr==NULL) ifa->bdrip=me.bdr=ipa_from_u32(0);
else ifa->bdrip=me.bdr=nbdr->ip;
nbdr=electbdr(ifa->neigh_list);
ndr=electdr(ifa->neigh_list);
}
if(ndr==NULL) ifa->drid=0;
if(ndr==NULL) ndrid=0;
else ndrid=ndr->rid;
if(ndr==NULL) ndrip=ipa_from_u32(0);
else ndrip=ndr->ip;
if(nbdr==NULL) nbdrid=0;
else nbdrid=nbdr->rid;
if(nbdr==NULL) nbdrip=ipa_from_u32(0);
else nbdrip=nbdr->ip;
doadj=0;
if((ifa->drid!=ndrid) || (ifa->bdrid!=nbdrid)) doadj=1;
ifa->drid=ndrid;
if(ndrid==0)
if((ipa_compare(ifa->drip,ndrip)!=0) || (ipa_compare(ifa->bdrip,nbdrip)!=0))
doadj=1;
if(ndr==NULL)
{
ifa->drid=0;
ifa->drip=ipa_from_u32(0);
}
else
{
if((tmp=find_neigh(ifa,ndrid))==NULL)
bug("Error in DR election.");
ifa->drid=ndrid;
ifa->drip=tmp->ip;
ifa->drid=ndr->rid;
ifa->drip=ndr->ip;
}
if(nbdrid==0)
if(nbdr==NULL)
{
ifa->bdrid=0;
ifa->bdrip=ipa_from_u32(0);
}
else
{
if((tmp=find_neigh(ifa,nbdrid))==NULL)
bug("Error in BDR election.");
ifa->bdrid=nbdrid;
ifa->bdrip=tmp->ip;
ifa->bdrid=nbdr->rid;
ifa->bdrip=nbdr->ip;
}
DBG("%s: DR=%I, BDR=%I\n",p->name, ifa->drid, ifa->bdrid);
DBG("DR=%I, BDR=%I\n", ifa->drid, ifa->bdrid);
if(myid==ifa->drid) iface_chstate(ifa, OSPF_IS_DR);
else

8
proto/ospf/ospf.h
View file

@ -154,8 +154,8 @@ struct ospf_hello_packet {
u8 options;
u8 priority;
u32 deadint;
u32 dr;
u32 bdr;
ip_addr dr;
ip_addr bdr;
};
struct immsb {
@ -305,8 +305,8 @@ struct ospf_neighbor
ip_addr ip; /* IP of it's interface */
u8 priority; /* Priority */
u8 options; /* Options received */
u32 dr; /* Neigbour's idea of DR */
u32 bdr; /* Neigbour's idea of BDR */
ip_addr dr; /* Neigbour's idea of DR */
ip_addr bdr; /* Neigbour's idea of BDR */
u8 adj; /* built adjacency? */
siterator dbsi; /* Database summary list iterator */
slist lsrql; /* Link state request */