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authorDuan Jiong <duanj.fnst@cn.fujitsu.com>2013-11-26 11:46:56 +0400
committerDavid S. Miller <davem@davemloft.net>2013-12-03 01:00:38 +0400
commit30e56918dd1e6d64350661f186657f6a6f2646e6 (patch)
tree8ff9e816cd40e17b5bf0d232448bb993e148310a /net/ipv6/ndisc.c
parenta45299e72737c528975546a0680cace5d7364d27 (diff)
downloadlinux-30e56918dd1e6d64350661f186657f6a6f2646e6.tar.xz
ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv
when dealing with a RA message, if accept_ra_defrtr is false, the kernel will not add the default route, and then deal with the following route information options. Unfortunately, those options maybe contain default route, so let's judge the accept_ra_defrtr before calling rt6_route_rcv. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r--net/ipv6/ndisc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 3512177deb4d..300865171394 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1277,6 +1277,9 @@ skip_linkparms:
ri->prefix_len == 0)
continue;
#endif
+ if (ri->prefix_len == 0 &&
+ !in6_dev->cnf.accept_ra_defrtr)
+ continue;
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,