9 files changed, 40 insertions, 13 deletions

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index b2024757edd5..8521067ed4f7 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -110,9 +110,9 @@ struct rpc_credops {
         __be32 *                (*crmarshal)(struct rpc_task *, __be32 *);
         int                     (*crrefresh)(struct rpc_task *);
         __be32 *                (*crvalidate)(struct rpc_task *, __be32 *);
-        int                     (*crwrap_req)(struct rpc_task *, kxdrproc_t,
+        int                     (*crwrap_req)(struct rpc_task *, kxdreproc_t,
                                                 void *, __be32 *, void *);
-        int                     (*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
+        int                     (*crunwrap_resp)(struct rpc_task *, kxdrdproc_t,
                                                 void *, __be32 *, void *);
 };
 
@@ -139,8 +139,8 @@ struct rpc_cred *	rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *
 void                    put_rpccred(struct rpc_cred *);
 __be32 *                rpcauth_marshcred(struct rpc_task *, __be32 *);
 __be32 *                rpcauth_checkverf(struct rpc_task *, __be32 *);
-int                     rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj);
-int                     rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj);
+int                     rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj);
+int                     rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp, __be32 *data, void *obj);
 int                     rpcauth_refreshcred(struct rpc_task *);
 void                    rpcauth_invalcred(struct rpc_task *);
 int                     rpcauth_uptodatecred(struct rpc_task *);
diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h
index 7c91260c44a9..c50b458b8a3f 100644
--- a/include/linux/sunrpc/bc_xprt.h
+++ b/include/linux/sunrpc/bc_xprt.h
@@ -43,10 +43,18 @@ int bc_send(struct rpc_rqst *req);
  */
 static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
 {
-        if (rqstp->rq_server->bc_xprt)
+        if (rqstp->rq_server->sv_bc_xprt)
                 return 1;
         return 0;
 }
+static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp)
+{
+        if (svc_is_backchannel(rqstp))
+                return (struct nfs4_sessionid *)
+                        rqstp->rq_server->sv_bc_xprt->xpt_bc_sid;
+        return NULL;
+}
+
 #else /* CONFIG_NFS_V4_1 */
 static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
                                          unsigned int min_reqs)
@@ -59,6 +67,11 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
         return 0;
 }
 
+static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp)
+{
+        return NULL;
+}
+
 static inline void xprt_free_bc_request(struct rpc_rqst *req)
 {
 }
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 6950c981882d..7898ea13de70 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -13,6 +13,7 @@
 #ifndef _LINUX_SUNRPC_CACHE_H_
 #define _LINUX_SUNRPC_CACHE_H_
 
+#include <linux/kref.h>
 #include <linux/slab.h>
 #include <asm/atomic.h>
 #include <linux/proc_fs.h>
@@ -255,10 +256,13 @@ static inline time_t get_expiry(char **bpp)
         return rv - boot.tv_sec;
 }
 
+#ifdef CONFIG_NFSD_DEPRECATED
 static inline void sunrpc_invalidate(struct cache_head *h,
                                      struct cache_detail *detail)
 {
         h->expiry_time = seconds_since_boot() - 1;
         detail->nextcheck = seconds_since_boot();
 }
+#endif /* CONFIG_NFSD_DEPRECATED */
+
 #endif /*  _LINUX_SUNRPC_CACHE_H_ */
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index a5a55f284b7d..ef9476a36ff7 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -89,8 +89,8 @@ struct rpc_version {
  */
 struct rpc_procinfo {
         u32                     p_proc;         /* RPC procedure number */
-        kxdrproc_t              p_encode;       /* XDR encode function */
-        kxdrproc_t              p_decode;       /* XDR decode function */
+        kxdreproc_t             p_encode;       /* XDR encode function */
+        kxdrdproc_t             p_decode;       /* XDR decode function */
         unsigned int            p_arglen;       /* argument hdr length (u32) */
         unsigned int            p_replen;       /* reply hdr length (u32) */
         unsigned int            p_count;        /* call count */
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 5a3085b9b394..ea29330b78bd 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -99,7 +99,7 @@ struct svc_serv {
         spinlock_t              sv_cb_lock;     /* protects the svc_cb_list */
         wait_queue_head_t       sv_cb_waitq;    /* sleep here if there are no
                                                  * entries in the svc_cb_list */
-        struct svc_xprt         *bc_xprt;
+        struct svc_xprt         *sv_bc_xprt;    /* callback on fore channel */
 #endif /* CONFIG_NFS_V4_1 */
 };
 
@@ -269,6 +269,7 @@ struct svc_rqst {
         struct cache_req        rq_chandle;     /* handle passed to caches for 
                                                  * request delaying 
                                                  */
+        bool                    rq_dropme;
         /* Catering to nfsd */
         struct auth_domain *    rq_client;      /* RPC peer info */
         struct auth_domain *    rq_gssclient;   /* "gss/"-style peer info */
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index aea0d438e3c7..059877b4d85b 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -63,7 +63,6 @@ struct svc_xprt {
 #define XPT_LISTENER    11              /* listening endpoint */
 #define XPT_CACHE_AUTH  12              /* cache auth info */
 
-        struct svc_pool         *xpt_pool;      /* current pool iff queued */
         struct svc_serv         *xpt_server;    /* service for transport */
         atomic_t                xpt_reserved;   /* space on outq that is rsvd */
         struct mutex            xpt_mutex;      /* to serialize sending data */
@@ -78,8 +77,10 @@ struct svc_xprt {
         size_t                  xpt_remotelen;  /* length of address */
         struct rpc_wait_queue   xpt_bc_pending; /* backchannel wait queue */
         struct list_head        xpt_users;      /* callbacks on free */
+        void                    *xpt_bc_sid;    /* back channel session ID */
 
         struct net              *xpt_net;
+        struct rpc_xprt         *xpt_bc_xprt;   /* NFSv4.1 backchannel */
 };
 
 static inline void unregister_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u)
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h
index 1b353a76c304..04dba23c59f2 100644
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -28,7 +28,6 @@ struct svc_sock {
         /* private TCP part */
         u32                     sk_reclen;      /* length of record */
         u32                     sk_tcplen;      /* current read length */
-        struct rpc_xprt         *sk_bc_xprt;    /* NFSv4.1 backchannel xprt */
 };
 
 /*
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 498ab93a81e4..fc84b7a19ca3 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -33,8 +33,8 @@ struct xdr_netobj {
 };
 
 /*
- * This is the generic XDR function. rqstp is either a rpc_rqst (client
- * side) or svc_rqst pointer (server side).
+ * This is the legacy generic XDR function. rqstp is either a rpc_rqst
+ * (client side) or svc_rqst pointer (server side).
  * Encode functions always assume there's enough room in the buffer.
  */
 typedef int     (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj);
@@ -201,14 +201,22 @@ struct xdr_stream {
 
         __be32 *end;            /* end of available buffer space */
         struct kvec *iov;       /* pointer to the current kvec */
+        struct kvec scratch;    /* Scratch buffer */
+        struct page **page_ptr; /* pointer to the current page */
 };
 
+/*
+ * These are the xdr_stream style generic XDR encode and decode functions.
+ */
+typedef void    (*kxdreproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
+typedef int     (*kxdrdproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
+
 extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
 extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
 extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
                 unsigned int base, unsigned int len);
 extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
-extern __be32 *xdr_inline_peek(struct xdr_stream *xdr, size_t nbytes);
+extern void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen);
 extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
 extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
 extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 89d10d279a20..bef0f535f746 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -321,6 +321,7 @@ void			xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie);
 #define XPRT_CLOSING            (6)
 #define XPRT_CONNECTION_ABORT   (7)
 #define XPRT_CONNECTION_CLOSE   (8)
+#define XPRT_INITIALIZED        (9)
 
 static inline void xprt_set_connected(struct rpc_xprt *xprt)
 {