[IPV6]: Do not change protocol for raw IPv6 sockets.

It is not allowed to change underlying protocol for
   int fd = socket(PF_INET6, SOCK_RAW, IPPROTO_UDP);

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 3eef8e5b3636..1afe210d6286 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -161,6 +161,9 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
                         struct ipv6_txoptions *opt;
                         struct sk_buff *pktopt;
 
+                        if (sk->sk_type == SOCK_RAW)
+                                break;
+
                         if (sk->sk_protocol != IPPROTO_UDP &&
                             sk->sk_protocol != IPPROTO_UDPLITE &&
                             sk->sk_protocol != IPPROTO_TCP)