RPCRDMA: Kconfig and header file with rpcrdma protocol definitions

This file implements the configuration target, protocol template and
constants for the rpcrdma transport framing, for use by the xprtrdma
rpc transport implementation.

Signed-off-by: Tom Talpey <talpey@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/Kconfig b/fs/Kconfig
index f9eed6d..b9808bb 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1728,6 +1728,14 @@
 config SUNRPC_GSS
 	tristate
 
+config SUNRPC_XPRT_RDMA
+	tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
+	depends on SUNRPC && EXPERIMENTAL
+	default m
+	help
+	  Adds a client RPC transport for supporting kernel NFS over RDMA
+	  mounts, including Infiniband and iWARP. Experimental.
+
 config SUNRPC_BIND34
 	bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
 	depends on SUNRPC && EXPERIMENTAL