]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv
authorDuan Jiong <duanj.fnst@cn.fujitsu.com>
Tue, 26 Nov 2013 07:46:56 +0000 (15:46 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 2 Dec 2013 21:00:38 +0000 (16:00 -0500)
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>
net/ipv6/ndisc.c

index 3512177deb4d0e7d12c6d145781802074f490615..3008651713947c76dac697d466f1301d05bba025 100644 (file)
@@ -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,