CIFS: SMBD: Upper layer reconnects to SMB Direct session

Do a reconnect on SMB Direct when it is used as the connection. Reconnect can
happen for many reasons and it's mostly the decision of SMB2 upper layer.
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

fs/cifs/connect.c

@@ -406,7 +406,10 @@ cifs_reconnect(struct TCP_Server_Info *server)
 
 		/* we should try only the port we connected to before */
 		mutex_lock(&server->srv_mutex);
-		rc = generic_ip_connect(server);
+		if (cifs_rdma_enabled(server))
+			rc = smbd_reconnect(server);
+		else
+			rc = generic_ip_connect(server);
 		if (rc) {
 			cifs_dbg(FYI, "reconnect error %d\n", rc);
 			mutex_unlock(&server->srv_mutex);