SUNRPC: Reconnect immediately whenever the server isn't refusing it.

If we've disconnected from the server, rather than the other way round,
then it makes little sense to wait 3 seconds before reconnecting.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 741ab8ad1f3a..a4cfdc5b2648 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1130,13 +1130,13 @@ static void xs_tcp_state_change(struct sock *sk)
                         transport->tcp_flags =
                                 TCP_RCV_COPY_FRAGHDR | TCP_RCV_COPY_XID;
 
-                        xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
                         xprt_wake_pending_tasks(xprt, 0);
                 }
                 spin_unlock_bh(&xprt->transport_lock);
                 break;
         case TCP_FIN_WAIT1:
                 /* The client initiated a shutdown of the socket */
+                xprt->reestablish_timeout = 0;
                 set_bit(XPRT_CLOSING, &xprt->state);
                 smp_mb__before_clear_bit();
                 clear_bit(XPRT_CONNECTED, &xprt->state);
@@ -1147,6 +1147,14 @@ static void xs_tcp_state_change(struct sock *sk)
                 /* The server initiated a shutdown of the socket */
                 set_bit(XPRT_CLOSING, &xprt->state);
                 xprt_force_disconnect(xprt);
+        case TCP_SYN_SENT:
+        case TCP_CLOSING:
+                /*
+                 * If the server closed down the connection, make sure that
+                 * we back off before reconnecting
+                 */
+                if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
+                        xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
                 break;
         case TCP_LAST_ACK:
                 smp_mb__before_clear_bit();