[NET]: Make mangling a checksum (0 -> 0xffff on the wire) explicit.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 0d22008d522e..bb45b9b7cbd9 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -536,7 +536,7 @@ static int udp_v6_push_pending_frames(struct sock *sk, struct udp_sock *up)
         uh->check = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst,
                                     up->len, fl->proto, csum   );
         if (uh->check == 0)
-                uh->check = -1;
+                uh->check = CSUM_MANGLED_0;
 
         err = ip6_push_pending_frames(sk);
 out: