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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2008-03-15 23:56:52 -0400
committerYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2008-04-03 10:06:00 +0900
commit6294e000736401d4415ad41f408e56e14aaaf7b4 (patch)
treed913282b07fdd581b3cb737d24c66864a097eebf /net/ipv6/ndisc.c
parent300aaeeaab5f447fcf40e911afe96df3de28f0db (diff)
downloadlinux-2.6.38-lt-ux500-6294e000736401d4415ad41f408e56e14aaaf7b4.tar.gz
[IPV6] NDISC: Ignore route information with /0 prefix from interior router.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r--net/ipv6/ndisc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 53b546019fd..16273e11e53 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1272,7 +1272,13 @@ skip_linkparms:
for (p = ndopts.nd_opts_ri;
p;
p = ndisc_next_option(p, ndopts.nd_opts_ri_end)) {
- if (((struct route_info *)p)->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)
+ struct route_info *ri = (struct route_info *)p;
+#ifdef CONFIG_IPV6_NDISC_NODETYPE
+ if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT &&
+ ri->prefix_len == 0)
+ continue;
+#endif
+ if (ri->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)
continue;
rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,
&ipv6_hdr(skb)->saddr);