From: Trond Myklebust Date: Sat, 19 Mar 2011 00:21:23 +0000 (-0400) Subject: SUNRPC: Deal with the lack of a SYN_SENT sk->sk_state_change callback... X-Git-Tag: firefly_0821_release~10164^2~6^2~46 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=62a5c72161f202d6d2328515b5af424b3ed13012;p=firefly-linux-kernel-4.4.55.git SUNRPC: Deal with the lack of a SYN_SENT sk->sk_state_change callback... commit fe19a96b10032035a35779f42ad59e35d6dd8ffd upstream. The TCP connection state code depends on the state_change() callback being called when the SYN_SENT state is set. However the networking layer doesn't actually call us back in that case. Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 1d61c3358e31..79194ad738d8 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1381,7 +1381,6 @@ static void xs_tcp_state_change(struct sock *sk) case TCP_CLOSE_WAIT: /* The server initiated a shutdown of the socket */ xprt_force_disconnect(xprt); - case TCP_SYN_SENT: xprt->connect_cookie++; case TCP_CLOSING: /* @@ -1843,6 +1842,7 @@ static void xs_tcp_reuse_connection(struct rpc_xprt *xprt, struct sock_xprt *tra static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) { struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); + int ret = -ENOTCONN; if (!transport->inet) { struct sock *sk = sock->sk; @@ -1874,12 +1874,22 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) } if (!xprt_bound(xprt)) - return -ENOTCONN; + goto out; /* Tell the socket layer to start connecting... */ xprt->stat.connect_count++; xprt->stat.connect_start = jiffies; - return kernel_connect(sock, xs_addr(xprt), xprt->addrlen, O_NONBLOCK); + ret = kernel_connect(sock, xs_addr(xprt), xprt->addrlen, O_NONBLOCK); + switch (ret) { + case 0: + case -EINPROGRESS: + /* SYN_SENT! */ + xprt->connect_cookie++; + if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO) + xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO; + } +out: + return ret; } /**