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A minor bugfix in OSPF ext-LSA processing.

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This commit is contained in:
Ondrej Zajicek 2010-05-03 00:10:48 +02:00
parent 506fa1a73e
commit 54818e9beb
1 changed files with 19 additions and 3 deletions
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22
proto/ospf/rt.c
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@ -1024,6 +1024,23 @@ ospf_rt_abr(struct proto_ospf *po)
ospf_check_vlinks(po);
}
/* Like fib_route(), but ignores dummy rt entries */
static void *
ospf_fib_route(struct fib *f, ip_addr a, int len)
{
ip_addr a0;
ort *nf;
while (len >= 0)
{
a0 = ipa_and(a, ipa_mkmask(len));
nf = fib_find(f, &a0, len);
if (nf && nf->n.type)
return nf;
len--;
}
return NULL;
}
/* RFC 2328 16.4. calculating external routes */
static void
@ -1124,9 +1141,8 @@ ospf_ext_spf(struct proto_ospf *po)
}
else
{
/* FIXME: what about more specific dummy route? */
nf2 = fib_route(&po->rtf, rt_fwaddr, MAX_PREFIX_LENGTH);
if (!nf2) /* nf2->n.type is checked later */
nf2 = ospf_fib_route(&po->rtf, rt_fwaddr, MAX_PREFIX_LENGTH);
if (!nf2)
continue;
if ((nf2->n.type != RTS_OSPF) && (nf2->n.type != RTS_OSPF_IA))