Merge the NFSv4.1 server code in projects/nfsv4.1-server over

into head. The code is not believed to have any effect
on the semantics of non-NFSv4.1 server behaviour.
It is a rather large merge, but I am hoping that there will
not be any regressions for the NFS server.

MFC after:	1 month

1 files changed, 8 insertions, 0 deletions

diff --git a/sys/rpc/svc.h b/sys/rpc/svc.h
index 4f2c853ea993..1c7bbce009e8 100644
--- a/sys/rpc/svc.h
+++ b/sys/rpc/svc.h
@@ -145,6 +145,7 @@ struct __rpc_svcthread;
  * Server side transport handle. In the kernel, transports have a
  * reference count which tracks the number of currently assigned
  * worker threads plus one for the service pool's reference.
+ * For NFSv4.1 sessions, a reference is also held for a backchannel.
  */
 typedef struct __rpc_svcxprt {
 #ifdef _KERNEL
@@ -774,6 +775,13 @@ extern SVCXPRT *svc_vc_create(SVCPOOL *, struct socket *,
 
 extern SVCXPRT *svc_vc_create_backchannel(SVCPOOL *);
 
+extern void *clnt_bck_create(struct socket *, const rpcprog_t, const rpcvers_t);
+	/*
+	 * struct socket *;			-- server transport socket
+	 * const rpcprog_t prog;		-- RPC program number
+	 * const rpcvers_t vers;		-- RPC program version
+	 */
+
 /*
  * Generic TLI create routine
  */