l2tp: Fix sendmsg() return value

[ Upstream commit a6f79d0f26704214b5b702bbac525cb72997f984 ]

PPPoL2TP sockets should comply with the standard send*() return values
(i.e. return number of bytes sent instead of 0 upon success).

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 8ab041b..74410e6 100644 (file)
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -362,7 +362,7 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh
        sock_put(ps->tunnel_sock);
        sock_put(sk);
 
-       return error;
+       return total_len;
 
 error_put_sess_tun:
        sock_put(ps->tunnel_sock);