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Bugfix in external routes calculation.

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This commit is contained in:
Ondrej Filip 2005-03-14 10:59:52 +00:00
parent f735de0290
commit a2d5b405d4
1 changed files with 34 additions and 34 deletions
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68
proto/ospf/rt.c
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@ -45,7 +45,7 @@ ospf_rt_initort(struct fib_node *fn)
/* /*
* This is hard to understand: * This is hard to understand:
* If rfc1583 is set to 1, it work likes normal route_better() * If rfc1583 is set to 1, it work likes normal route_better()
* But if it is set to 0, it prunes number of AS bondary * But if it is set to 0, it prunes number of AS boundary
* routes before it starts the router decision * routes before it starts the router decision
*/ */
static int static int
@ -60,35 +60,35 @@ ri_better(struct proto_ospf *po, orta * new, ort *nefn, orta * old, ort *oefn, i
if (old->metric1 == LSINFINITY) if (old->metric1 == LSINFINITY)
return 1; return 1;
if(!rfc1583) if (!rfc1583)
{ {
if(new->oa->areaid == 0) newtype = RTS_OSPF_IA; if ((new->type < RTS_OSPF_EXT1) && (new->oa->areaid == 0)) newtype = RTS_OSPF_IA;
if(old->oa->areaid == 0) oldtype = RTS_OSPF_IA; if ((old->type < RTS_OSPF_EXT2) && (old->oa->areaid == 0)) oldtype = RTS_OSPF_IA;
} }
if (new->type < old->type) if (newtype < oldtype)
return 1; return 1;
if (new->type > old->type) if (newtype > oldtype)
return 0; return 0;
/* Same type */ /* Same type */
if(new->type == RTS_OSPF_EXT2) if (new->type == RTS_OSPF_EXT2)
{ {
if (new->metric2 < old->metric2) return 1; if (new->metric2 < old->metric2) return 1;
if (new->metric2 > old->metric2) return 0; if (new->metric2 > old->metric2) return 0;
} }
if(((new->type == RTS_OSPF_EXT2) || (new->type == RTS_OSPF_EXT1)) && (!po->rfc1583)) if (((new->type == RTS_OSPF_EXT2) || (new->type == RTS_OSPF_EXT1)) && (!po->rfc1583))
{ {
int newtype = nefn->n.type; newtype = nefn->n.type;
int oldtype = oefn->n.type; oldtype = oefn->n.type;
if(nefn->n.oa->areaid == 0) newtype = RTS_OSPF_IA; if (nefn->n.oa->areaid == 0) newtype = RTS_OSPF_IA;
if(oefn->n.oa->areaid == 0) oldtype = RTS_OSPF_IA; if (oefn->n.oa->areaid == 0) oldtype = RTS_OSPF_IA;
if(newtype < oldtype) return 1; if (newtype < oldtype) return 1;
if(newtype > oldtype) return 0; if (newtype > oldtype) return 0;
} }
if (new->metric1 < old->metric1) if (new->metric1 < old->metric1)
@ -339,8 +339,8 @@ link_back(struct ospf_area *oa, struct top_hash_entry *fol, struct top_hash_entr
struct ospf_lsa_rt_link *rtl, *rr; struct ospf_lsa_rt_link *rtl, *rr;
struct proto_ospf *po = oa->po; struct proto_ospf *po = oa->po;
if(!pre) return 0; if (!pre) return 0;
if(!fol) return 0; if (!fol) return 0;
switch (fol->lsa.type) switch (fol->lsa.type)
{ {
case LSA_T_RT: case LSA_T_RT:
@ -405,7 +405,7 @@ ospf_rt_sum_tr(struct ospf_area *oa)
ort *re = NULL, *abr; ort *re = NULL, *abr;
orta nf; orta nf;
if(!bb) return; if (!bb) return;
WALK_SLIST(en, po->lsal) WALK_SLIST(en, po->lsal)
{ {
@ -439,14 +439,14 @@ ospf_rt_sum_tr(struct ospf_area *oa)
type = ORT_ROUTER; type = ORT_ROUTER;
re = (ort *) fib_find(&bb->rtr, &ip, 32); re = (ort *) fib_find(&bb->rtr, &ip, 32);
} }
if(!re) continue; if (!re) continue;
if(re->n.oa->areaid != 0) continue; if (re->n.oa->areaid != 0) continue;
if((re->n.type != RTS_OSPF) && (re->n.type != RTS_OSPF_IA)) continue; if ((re->n.type != RTS_OSPF) && (re->n.type != RTS_OSPF_IA)) continue;
abrip = ipa_from_u32(en->lsa.rt); abrip = ipa_from_u32(en->lsa.rt);
abr = fib_find(&oa->rtr, &abrip, 32); abr = fib_find(&oa->rtr, &abrip, 32);
if(!abr) continue; if (!abr) continue;
tm = (union ospf_lsa_sum_tm *)(mask + 1); tm = (union ospf_lsa_sum_tm *)(mask + 1);
@ -489,13 +489,13 @@ ospf_rt_sum(struct ospf_area *oa)
if (en->lsa.rt == p->cf->global->router_id) if (en->lsa.rt == p->cf->global->router_id)
continue; continue;
if((en->lsa.type != LSA_T_SUM_RT) && (en->lsa.type != LSA_T_SUM_NET)) if ((en->lsa.type != LSA_T_SUM_RT) && (en->lsa.type != LSA_T_SUM_NET))
continue; continue;
mask = (ip_addr *)en->lsa_body; mask = (ip_addr *)en->lsa_body;
tm = (union ospf_lsa_sum_tm *)(mask + 1); tm = (union ospf_lsa_sum_tm *)(mask + 1);
if((tm->metric & METRIC_MASK) == LSINFINITY) if ((tm->metric & METRIC_MASK) == LSINFINITY)
continue; continue;
if (en->lsa.type == LSA_T_SUM_NET) if (en->lsa.type == LSA_T_SUM_NET)
@ -683,9 +683,9 @@ ospf_ext_spf(struct proto_ospf *po)
WALK_LIST(atmp, po->area_list) WALK_LIST(atmp, po->area_list)
{ {
nfh = fib_find(&atmp->rtr, &rtid, 32); nfh = fib_find(&atmp->rtr, &rtid, 32);
if(nfh == NULL) continue; if (nfh == NULL) continue;
if(nf1 == NULL) nf1 = nfh; if (nf1 == NULL) nf1 = nfh;
else if(ri_better(po, &nfh->n, NULL, &nf1->n, NULL, po->rfc1583)) nf1 = nfh; else if (ri_better(po, &nfh->n, NULL, &nf1->n, NULL, po->rfc1583)) nf1 = nfh;
} }
if (!nf1) if (!nf1)
@ -746,15 +746,15 @@ ospf_ext_spf(struct proto_ospf *po)
nhi = nf2->n.ifa; nhi = nf2->n.ifa;
} }
nfh = nf2; if (nf2->n.metric1 == LSINFINITY)
continue; /* distance is INF */
} }
nfa.type = RTS_OSPF_EXT2; nfa.type = (met2 == LSINFINITY) ? RTS_OSPF_EXT1 : RTS_OSPF_EXT2;
if(met2 == LSINFINITY) nfa.type = RTS_OSPF_EXT1;
nfa.capa = 0; nfa.capa = 0;
nfa.metric1 = met1; nfa.metric1 = met1;
nfa.metric2 = met2; nfa.metric2 = met2;
nfa.oa = po->backbone; nfa.oa = (po->backbone == NULL) ? HEAD(po->area_list) : po->backbone;
nfa.ar = nf1->n.ar; nfa.ar = nf1->n.ar;
nfa.nh = nh; nfa.nh = nh;
nfa.ifa = nhi; nfa.ifa = nhi;
@ -1021,7 +1021,7 @@ again2:
if (memcmp(&nf->n, &nf->o, sizeof(orta))) if (memcmp(&nf->n, &nf->o, sizeof(orta)))
{ /* Some difference */ { /* Some difference */
check_sum_lsa(po, nf, ORT_ROUTER); check_sum_lsa(po, nf, ORT_ROUTER);
if(nf->n.metric1 >= LSINFINITY) if (nf->n.metric1 >= LSINFINITY)
{ {
FIB_ITERATE_PUT(&fit, nftmp); FIB_ITERATE_PUT(&fit, nftmp);
fib_delete(&oa->rtr, nftmp); fib_delete(&oa->rtr, nftmp);
@ -1036,7 +1036,7 @@ again2:
{ {
flush = 1; flush = 1;
anet = (struct area_net *) nftmp; anet = (struct area_net *) nftmp;
if((!anet->hidden) && anet->active) if ((!anet->hidden) && anet->active)
flush = 0; flush = 0;
WALK_LIST(oaa, po->area_list) WALK_LIST(oaa, po->area_list)
@ -1049,7 +1049,7 @@ again2:
if (oaa->stub) fl = 1; if (oaa->stub) fl = 1;
if(fl) flush_sum_lsa(oaa, &anet->fn, ORT_NET); if (fl) flush_sum_lsa(oaa, &anet->fn, ORT_NET);
else originate_sum_lsa(oaa, &anet->fn, ORT_NET, anet->metric); else originate_sum_lsa(oaa, &anet->fn, ORT_NET, anet->metric);
} }
} }
@ -1063,7 +1063,7 @@ again2:
fnn.prefix = IPA_NONE; fnn.prefix = IPA_NONE;
fnn.pxlen = 0; fnn.pxlen = 0;
if(oa->stub) originate_sum_lsa(oa, &fnn, ORT_NET, oa->stub); if (oa->stub) originate_sum_lsa(oa, &fnn, ORT_NET, oa->stub);
else flush_sum_lsa(oa, &fnn, ORT_NET); else flush_sum_lsa(oa, &fnn, ORT_NET);
} }
} }