xprtrdma: Reset connection timeout after successful reconnect

If the new connection is able to make forward progress, reset the
re-establish timeout. Otherwise it keeps growing even if disconnect
events are rare.

The same behavior as TCP is adopted: reconnect immediately if the
transport instance has been able to make some forward progress.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
index dc4a826..ac65b0c 100644 (file)
--- a/net/sunrpc/xprtrdma/rpc_rdma.c
+++ b/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -770,6 +770,7 @@ repost:
 
        /* from here on, the reply is no longer an orphan */
        req->rl_reply = rep;
+       xprt->reestablish_timeout = 0;
 
        /* check for expected message types */
        /* The order of some of these tests is important. */