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Fixed bug in nex hop calculation of external routes.

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This commit is contained in:
Ondrej Filip 2000-08-18 16:44:37 +00:00
parent 88aa2af7ef
commit f321a61f77
1 changed files with 18 additions and 13 deletions
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31
proto/ospf/rt.c
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@ -263,6 +263,7 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
struct top_hash_entry *en,*etmp,*absr; struct top_hash_entry *en,*etmp,*absr;
struct fib *ef=&po->efib; struct fib *ef=&po->efib;
struct extfib *nf; struct extfib *nf;
struct infib *inf;
struct fib_iterator fit; struct fib_iterator fit;
struct ospf_area *oa=NULL,*atmp,*absroa; struct ospf_area *oa=NULL,*atmp,*absroa;
struct proto *p=&po->proto; struct proto *p=&po->proto;
@ -366,18 +367,18 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
} }
tag=lt->tag; tag=lt->tag;
} }
else else /* FW address !=0 */
{ {
nf=NULL; /* FW address !=0 */ inf=NULL;
WALK_LIST(atmp,po->area_list) WALK_LIST(atmp,po->area_list)
{ {
if((nf=fib_route(&atmp->infib,lt->fwaddr,32))!=NULL) if((inf=fib_route(&atmp->infib,lt->fwaddr,32))!=NULL)
{ {
break; break;
} }
} }
if(nf==NULL) if(inf==NULL)
{ {
DBG("Cannot find network route (GW=%I)\n",lt->fwaddr); DBG("Cannot find network route (GW=%I)\n",lt->fwaddr);
continue; continue;
@ -385,42 +386,46 @@ ospf_ext_spfa(struct proto_ospf *po) /* FIXME looking into inter-area */
if(lt->etos>0) if(lt->etos>0)
{ {
met=nf->metric; met=inf->metric;
met2=lt->metric; met2=lt->metric;
} }
else else
{ {
met=nf->metric+lt->metric; met=inf->metric+lt->metric;
met2=LSINFINITY; met2=LSINFINITY;
} }
tag=lt->tag; tag=lt->tag;
if((nn=neigh_find(p,&lt->fwaddr,0))!=NULL) if((nn=neigh_find(p,&lt->fwaddr,0))!=NULL)
{ {
nnh=nn->addr; nnh=IPA_NONE;
nnhi=nn->iface; nnhi=nn->iface;
} }
else else
{ {
nnh=nf->nh; nnh=inf->en->nh;
nnhi=nf->nhi; nnhi=inf->en->nhi;
} }
} }
nf=fib_get(ef,&ip, mlen); nf=fib_get(ef,&ip, mlen);
if(((nf->metric>met)&&(nf->metric2==met2)) || /* both E1 or E2 if((nf->metric==LSINFINITY) || /* nf is new */
((met<nf->metric)&&(nf->metric2==met2)) || /* both E1 or E2
* with same metric */ * with same metric */
((nf->metric2>met2)&&(nf->metric2!=LSINFINITY)) || /* E2 smaller and ((met2<nf->metric2)&&(nf->metric2!=LSINFINITY)) || /* E2 smaller and
* 1st is not E1 */ * 1st is not E1 */
((nf->metric2!=LSINFINITY)&&(met2==LSINFINITY))) /* 2nd is E1 and ((nf->metric2!=LSINFINITY)&&(met2==LSINFINITY))) /* 2nd is E1 and
* 1st is E2 */ * 1st is E2 */
{ {
if(nf->metric!=LSINFINITY)
OSPF_TRACE(D_EVENTS,
"Rewritting %I/%d met=%d, met2=%d, nmet=%d, nmet2=%d",
ip, mlen, nf->metric, nf->metric2, met, met2);
nf->metric=met; nf->metric=met;
nf->metric2=met2; nf->metric2=met2;
nf->tag=tag; nf->tag=tag;
if(ipa_compare(nnh,ipa_from_u32(0))!=0) if(nnhi!=NULL)
{ {
nf->nh=nnh; nf->nh=nnh;
nf->nhi=nnhi; nf->nhi=nnhi;