SUNRPC: Allow the client to detect if the TCP connection is closed

Add an xprt->state bit to enable the TCP ->state_change() method to signal
whether or not the TCP connection is in the process of closing down.
This will to be used by the reconnection logic in a separate patch.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 6f524a9e7fd0..afb9e6ad7fe0 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -257,6 +257,7 @@ void			xprt_force_disconnect(struct rpc_xprt *xprt);
 #define XPRT_CLOSE_WAIT         (3)
 #define XPRT_BOUND              (4)
 #define XPRT_BINDING            (5)
+#define XPRT_CLOSING            (6)
 
 static inline void xprt_set_connected(struct rpc_xprt *xprt)
 {