[IPV6]: Cache source address as well in ipv6_pinfo{}.

Based on MIPL2 kernel patch.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 0a18cb6b1cbb..2a376b7d91b4 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -762,6 +762,9 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk,
          * 2. oif also should be the same.
          */
         if (ip6_rt_check(&rt->rt6i_dst, &fl->fl6_dst, np->daddr_cache) ||
+#ifdef CONFIG_IPV6_SUBTREES
+            ip6_rt_check(&rt->rt6i_src, &fl->fl6_src, np->saddr_cache) ||
+#endif
             (fl->oif && fl->oif != dst->dev->ifindex)) {
                 dst_release(dst);
                 dst = NULL;