Merge branch 'for-linus' of git://linux-nfs.org/~bfields/linux

* 'for-linus' of git://linux-nfs.org/~bfields/linux: (100 commits)
  SUNRPC: RPC program information is stored in unsigned integers
  SUNRPC: Move exported symbol definitions after function declaration part 2
  NLM: tear down RPC clients in nlm_shutdown_hosts
  SUNRPC: spin svc_rqst initialization to its own function
  nfsd: more careful input validation in nfsctl write methods
  lockd: minor log message fix
  knfsd: don't bother mapping putrootfh enoent to eperm
  rdma: makefile
  rdma: ONCRPC RDMA protocol marshalling
  rdma: SVCRDMA sendto
  rdma: SVCRDMA recvfrom
  rdma: SVCRDMA Core Transport Services
  rdma: SVCRDMA Transport Module
  rdma: SVCRMDA Header File
  svc: Add svc_xprt_names service to replace svc_sock_names
  knfsd: Support adding transports by writing portlist file
  svc: Add svc API that queries for a transport instance
  svc: Add /proc/sys/sunrpc/transport files
  svc: Add transport hdr size for defer/revisit
  svc: Move the xprt independent code to the svc_xprt.c file
  ...

19 files changed, 475 insertions, 104 deletions

diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index e2d1ce36b36..4babb2a129a 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -173,14 +173,17 @@ void		  nlmclnt_next_cookie(struct nlm_cookie *);
 /*
  * Host cache
  */
-struct nlm_host * nlmclnt_lookup_host(const struct sockaddr_in *, int, int, const char *, int);
-struct nlm_host * nlmsvc_lookup_host(struct svc_rqst *, const char *, int);
+struct nlm_host  *nlmclnt_lookup_host(const struct sockaddr_in *, int, int,
+					const char *, unsigned int);
+struct nlm_host  *nlmsvc_lookup_host(struct svc_rqst *, const char *,
+					unsigned int);
 struct rpc_clnt * nlm_bind_host(struct nlm_host *);
 void		  nlm_rebind_host(struct nlm_host *);
 struct nlm_host * nlm_get_host(struct nlm_host *);
 void		  nlm_release_host(struct nlm_host *);
 void		  nlm_shutdown_hosts(void);
-extern void	  nlm_host_rebooted(const struct sockaddr_in *, const char *, int, u32);
+extern void	  nlm_host_rebooted(const struct sockaddr_in *, const char *,
+					unsigned int, u32);
 void		  nsm_release(struct nsm_handle *);
 
 
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index 83a1f9f6237..df18fa053bc 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -29,7 +29,7 @@ struct svc_rqst;
 /* Lock info passed via NLM */
 struct nlm_lock {
 	char *			caller;
-	int			len; 	/* length of "caller" */
+	unsigned int		len; 	/* length of "caller" */
 	struct nfs_fh		fh;
 	struct xdr_netobj	oh;
 	u32			svid;
@@ -78,7 +78,7 @@ struct nlm_res {
  */
 struct nlm_reboot {
 	char *		mon;
-	int		len;
+	unsigned int	len;
 	u32		state;
 	__be32		addr;
 	__be32		vers;
diff --git a/include/linux/nfsd/Kbuild b/include/linux/nfsd/Kbuild
index d9c5455808e..e726fc3a437 100644
--- a/include/linux/nfsd/Kbuild
+++ b/include/linux/nfsd/Kbuild
@@ -4,4 +4,3 @@ unifdef-y += stats.h
 unifdef-y += syscall.h
 unifdef-y += nfsfh.h
 unifdef-y += debug.h
-unifdef-y += auth.h
diff --git a/include/linux/nfsd/auth.h b/include/linux/nfsd/auth.h
deleted file mode 100644
index 0fb9f721219..00000000000
--- a/include/linux/nfsd/auth.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * include/linux/nfsd/auth.h
- *
- * nfsd-specific authentication stuff.
- * uid/gid mapping not yet implemented.
- *
- * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
- */
-
-#ifndef LINUX_NFSD_AUTH_H
-#define LINUX_NFSD_AUTH_H
-
-#ifdef __KERNEL__
-
-#define nfsd_luid(rq, uid)	((u32)(uid))
-#define nfsd_lgid(rq, gid)	((u32)(gid))
-#define nfsd_ruid(rq, uid)	((u32)(uid))
-#define nfsd_rgid(rq, gid)	((u32)(gid))
-
-/*
- * Set the current process's fsuid/fsgid etc to those of the NFS
- * client user
- */
-int nfsd_setuser(struct svc_rqst *, struct svc_export *);
-
-#endif /* __KERNEL__ */
-#endif /* LINUX_NFSD_AUTH_H */
diff --git a/include/linux/nfsd/cache.h b/include/linux/nfsd/cache.h
index 007480cd6a6..7b5d784cc85 100644
--- a/include/linux/nfsd/cache.h
+++ b/include/linux/nfsd/cache.h
@@ -72,8 +72,8 @@ enum {
  */
 #define RC_DELAY		(HZ/5)
 
-void	nfsd_cache_init(void);
-void	nfsd_cache_shutdown(void);
+int	nfsd_reply_cache_init(void);
+void	nfsd_reply_cache_shutdown(void);
 int	nfsd_cache_lookup(struct svc_rqst *, int);
 void	nfsd_cache_update(struct svc_rqst *, int, __be32 *);
 
diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
index bcb7abafbca..3a168725136 100644
--- a/include/linux/nfsd/export.h
+++ b/include/linux/nfsd/export.h
@@ -122,7 +122,7 @@ __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
 /*
  * Function declarations
  */
-void			nfsd_export_init(void);
+int			nfsd_export_init(void);
 void			nfsd_export_shutdown(void);
 void			nfsd_export_flush(void);
 void			exp_readlock(void);
diff --git a/include/linux/nfsd/nfsd.h b/include/linux/nfsd/nfsd.h
index 604a0d786bc..8caf4c4f64e 100644
--- a/include/linux/nfsd/nfsd.h
+++ b/include/linux/nfsd/nfsd.h
@@ -20,7 +20,6 @@
 #include <linux/nfsd/debug.h>
 #include <linux/nfsd/nfsfh.h>
 #include <linux/nfsd/export.h>
-#include <linux/nfsd/auth.h>
 #include <linux/nfsd/stats.h>
 /*
  * nfsd version
@@ -70,9 +69,9 @@ void		nfsd_racache_shutdown(void);
 int		nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
 		                struct svc_export **expp);
 __be32		nfsd_lookup(struct svc_rqst *, struct svc_fh *,
-				const char *, int, struct svc_fh *);
+				const char *, unsigned int, struct svc_fh *);
 __be32		 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
-				const char *, int,
+				const char *, unsigned int,
 				struct svc_export **, struct dentry **);
 __be32		nfsd_setattr(struct svc_rqst *, struct svc_fh *,
 				struct iattr *, int, time_t);
diff --git a/include/linux/nfsd/syscall.h b/include/linux/nfsd/syscall.h
index 8bcddccb6c4..4e439765b70 100644
--- a/include/linux/nfsd/syscall.h
+++ b/include/linux/nfsd/syscall.h
@@ -18,7 +18,6 @@
 #include <linux/nfsd/const.h>
 #include <linux/nfsd/export.h>
 #include <linux/nfsd/nfsfh.h>
-#include <linux/nfsd/auth.h>
 
 /*
  * Version of the syscall interface
diff --git a/include/linux/nfsd/xdr.h b/include/linux/nfsd/xdr.h
index 67885d5e6e5..a0132ef58f2 100644
--- a/include/linux/nfsd/xdr.h
+++ b/include/linux/nfsd/xdr.h
@@ -23,7 +23,7 @@ struct nfsd_sattrargs {
 struct nfsd_diropargs {
 	struct svc_fh		fh;
 	char *			name;
-	int			len;
+	unsigned int		len;
 };
 
 struct nfsd_readargs {
@@ -43,17 +43,17 @@ struct nfsd_writeargs {
 struct nfsd_createargs {
 	struct svc_fh		fh;
 	char *			name;
-	int			len;
+	unsigned int		len;
 	struct iattr		attrs;
 };
 
 struct nfsd_renameargs {
 	struct svc_fh		ffh;
 	char *			fname;
-	int			flen;
+	unsigned int		flen;
 	struct svc_fh		tfh;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 };
 
 struct nfsd_readlinkargs {
@@ -65,15 +65,15 @@ struct nfsd_linkargs {
 	struct svc_fh		ffh;
 	struct svc_fh		tfh;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 };
 
 struct nfsd_symlinkargs {
 	struct svc_fh		ffh;
 	char *			fname;
-	int			flen;
+	unsigned int		flen;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 	struct iattr		attrs;
 };
 
diff --git a/include/linux/nfsd/xdr3.h b/include/linux/nfsd/xdr3.h
index 89d9d6061a6..421eddd65a2 100644
--- a/include/linux/nfsd/xdr3.h
+++ b/include/linux/nfsd/xdr3.h
@@ -21,7 +21,7 @@ struct nfsd3_sattrargs {
 struct nfsd3_diropargs {
 	struct svc_fh		fh;
 	char *			name;
-	int			len;
+	unsigned int		len;
 };
 
 struct nfsd3_accessargs {
@@ -48,7 +48,7 @@ struct nfsd3_writeargs {
 struct nfsd3_createargs {
 	struct svc_fh		fh;
 	char *			name;
-	int			len;
+	unsigned int		len;
 	int			createmode;
 	struct iattr		attrs;
 	__be32 *		verf;
@@ -57,7 +57,7 @@ struct nfsd3_createargs {
 struct nfsd3_mknodargs {
 	struct svc_fh		fh;
 	char *			name;
-	int			len;
+	unsigned int		len;
 	__u32			ftype;
 	__u32			major, minor;
 	struct iattr		attrs;
@@ -66,10 +66,10 @@ struct nfsd3_mknodargs {
 struct nfsd3_renameargs {
 	struct svc_fh		ffh;
 	char *			fname;
-	int			flen;
+	unsigned int		flen;
 	struct svc_fh		tfh;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 };
 
 struct nfsd3_readlinkargs {
@@ -81,15 +81,15 @@ struct nfsd3_linkargs {
 	struct svc_fh		ffh;
 	struct svc_fh		tfh;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 };
 
 struct nfsd3_symlinkargs {
 	struct svc_fh		ffh;
 	char *			fname;
-	int			flen;
+	unsigned int		flen;
 	char *			tname;
-	int			tlen;
+	unsigned int		tlen;
 	struct iattr		attrs;
 };
 
diff --git a/include/linux/nfsd/xdr4.h b/include/linux/nfsd/xdr4.h
index b0ddfb41c79..27bd3e38ec5 100644
--- a/include/linux/nfsd/xdr4.h
+++ b/include/linux/nfsd/xdr4.h
@@ -441,7 +441,7 @@ void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
 __be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 		       struct dentry *dentry, __be32 *buffer, int *countp,
-		       u32 *bmval, struct svc_rqst *);
+		       u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
 		struct nfsd4_compound_state *,
 		struct nfsd4_setclientid *setclid);
diff --git a/include/linux/nfsd_idmap.h b/include/linux/nfsd_idmap.h
index e82746fcad1..d4a2ac18bd4 100644
--- a/include/linux/nfsd_idmap.h
+++ b/include/linux/nfsd_idmap.h
@@ -44,11 +44,16 @@
 #define IDMAP_NAMESZ 128
 
 #ifdef CONFIG_NFSD_V4
-void nfsd_idmap_init(void);
+int nfsd_idmap_init(void);
 void nfsd_idmap_shutdown(void);
 #else
-static inline void nfsd_idmap_init(void) {};
-static inline void nfsd_idmap_shutdown(void) {};
+static inline int nfsd_idmap_init(void)
+{
+	return 0;
+}
+static inline void nfsd_idmap_shutdown(void)
+{
+}
 #endif
 
 int nfsd_map_name_to_uid(struct svc_rqst *, const char *, size_t, __u32 *);
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index bd7a6b0a87a..03547d6abee 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -169,8 +169,8 @@ extern int cache_check(struct cache_detail *detail,
 extern void cache_flush(void);
 extern void cache_purge(struct cache_detail *detail);
 #define NEVER (0x7FFFFFFF)
-extern void cache_register(struct cache_detail *cd);
-extern int cache_unregister(struct cache_detail *cd);
+extern int cache_register(struct cache_detail *cd);
+extern void cache_unregister(struct cache_detail *cd);
 
 extern void qword_add(char **bpp, int *lp, char *str);
 extern void qword_addhex(char **bpp, int *lp, char *buf, int blen);
diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h
index 3912cf16361..10709cbe96f 100644
--- a/include/linux/sunrpc/debug.h
+++ b/include/linux/sunrpc/debug.h
@@ -20,7 +20,7 @@
 #define RPCDBG_BIND		0x0020
 #define RPCDBG_SCHED		0x0040
 #define RPCDBG_TRANS		0x0080
-#define RPCDBG_SVCSOCK		0x0100
+#define RPCDBG_SVCXPRT		0x0100
 #define RPCDBG_SVCDSP		0x0200
 #define RPCDBG_MISC		0x0400
 #define RPCDBG_CACHE		0x0800
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 8531a70da73..64c77105618 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -204,7 +204,7 @@ union svc_addr_u {
 struct svc_rqst {
 	struct list_head	rq_list;	/* idle list */
 	struct list_head	rq_all;		/* all threads list */
-	struct svc_sock *	rq_sock;	/* socket */
+	struct svc_xprt *	rq_xprt;	/* transport ptr */
 	struct sockaddr_storage	rq_addr;	/* peer address */
 	size_t			rq_addrlen;
 
@@ -214,9 +214,10 @@ struct svc_rqst {
 	struct auth_ops *	rq_authop;	/* authentication flavour */
 	u32			rq_flavor;	/* pseudoflavor */
 	struct svc_cred		rq_cred;	/* auth info */
-	struct sk_buff *	rq_skbuff;	/* fast recv inet buffer */
+	void *			rq_xprt_ctxt;	/* transport specific context ptr */
 	struct svc_deferred_req*rq_deferred;	/* deferred request we are replaying */
 
+	size_t			rq_xprt_hlen;	/* xprt header len */
 	struct xdr_buf		rq_arg;
 	struct xdr_buf		rq_res;
 	struct page *		rq_pages[RPCSVC_MAXPAGES];
@@ -317,11 +318,12 @@ static inline void svc_free_res_pages(struct svc_rqst *rqstp)
 
 struct svc_deferred_req {
 	u32			prot;	/* protocol (UDP or TCP) */
-	struct svc_sock		*svsk;
+	struct svc_xprt		*xprt;
 	struct sockaddr_storage	addr;	/* where reply must go */
 	size_t			addrlen;
 	union svc_addr_u	daddr;	/* where reply must come from */
 	struct cache_deferred_req handle;
+	size_t			xprt_hlen;
 	int			argslen;
 	__be32			args[0];
 };
@@ -382,6 +384,8 @@ struct svc_procedure {
  */
 struct svc_serv *  svc_create(struct svc_program *, unsigned int,
 			      void (*shutdown)(struct svc_serv*));
+struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
+					struct svc_pool *pool);
 int		   svc_create_thread(svc_thread_fn, struct svc_serv *);
 void		   svc_exit_thread(struct svc_rqst *);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
new file mode 100644
index 00000000000..c11bbcc081f
--- /dev/null
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -0,0 +1,262 @@
+/*
+ * Copyright (c) 2005-2006 Network Appliance, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the BSD-type
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *      Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *      Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ *      Neither the name of the Network Appliance, Inc. nor the names of
+ *      its contributors may be used to endorse or promote products
+ *      derived from this software without specific prior written
+ *      permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Tom Tucker <tom@opengridcomputing.com>
+ */
+
+#ifndef SVC_RDMA_H
+#define SVC_RDMA_H
+#include <linux/sunrpc/xdr.h>
+#include <linux/sunrpc/svcsock.h>
+#include <linux/sunrpc/rpc_rdma.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/rdma_cm.h>
+#define SVCRDMA_DEBUG
+
+/* RPC/RDMA parameters and stats */
+extern unsigned int svcrdma_ord;
+extern unsigned int svcrdma_max_requests;
+extern unsigned int svcrdma_max_req_size;
+
+extern atomic_t rdma_stat_recv;
+extern atomic_t rdma_stat_read;
+extern atomic_t rdma_stat_write;
+extern atomic_t rdma_stat_sq_starve;
+extern atomic_t rdma_stat_rq_starve;
+extern atomic_t rdma_stat_rq_poll;
+extern atomic_t rdma_stat_rq_prod;
+extern atomic_t rdma_stat_sq_poll;
+extern atomic_t rdma_stat_sq_prod;
+
+#define RPCRDMA_VERSION 1
+
+/*
+ * Contexts are built when an RDMA request is created and are a
+ * record of the resources that can be recovered when the request
+ * completes.
+ */
+struct svc_rdma_op_ctxt {
+	struct svc_rdma_op_ctxt *next;
+	struct xdr_buf arg;
+	struct list_head dto_q;
+	enum ib_wr_opcode wr_op;
+	enum ib_wc_status wc_status;
+	u32 byte_len;
+	struct svcxprt_rdma *xprt;
+	unsigned long flags;
+	enum dma_data_direction direction;
+	int count;
+	struct ib_sge sge[RPCSVC_MAXPAGES];
+	struct page *pages[RPCSVC_MAXPAGES];
+};
+
+#define RDMACTXT_F_READ_DONE	1
+#define RDMACTXT_F_LAST_CTXT	2
+
+struct svcxprt_rdma {
+	struct svc_xprt      sc_xprt;		/* SVC transport structure */
+	struct rdma_cm_id    *sc_cm_id;		/* RDMA connection id */
+	struct list_head     sc_accept_q;	/* Conn. waiting accept */
+	int		     sc_ord;		/* RDMA read limit */
+	wait_queue_head_t    sc_read_wait;
+	int                  sc_max_sge;
+
+	int                  sc_sq_depth;	/* Depth of SQ */
+	atomic_t             sc_sq_count;	/* Number of SQ WR on queue */
+
+	int                  sc_max_requests;	/* Depth of RQ */
+	int                  sc_max_req_size;	/* Size of each RQ WR buf */
+
+	struct ib_pd         *sc_pd;
+
+	struct svc_rdma_op_ctxt  *sc_ctxt_head;
+	int		     sc_ctxt_cnt;
+	int		     sc_ctxt_bump;
+	int		     sc_ctxt_max;
+	spinlock_t	     sc_ctxt_lock;
+	struct list_head     sc_rq_dto_q;
+	spinlock_t	     sc_rq_dto_lock;
+	struct ib_qp         *sc_qp;
+	struct ib_cq         *sc_rq_cq;
+	struct ib_cq         *sc_sq_cq;
+	struct ib_mr         *sc_phys_mr;	/* MR for server memory */
+
+	spinlock_t	     sc_lock;		/* transport lock */
+
+	wait_queue_head_t    sc_send_wait;	/* SQ exhaustion waitlist */
+	unsigned long	     sc_flags;
+	struct list_head     sc_dto_q;		/* DTO tasklet I/O pending Q */
+	struct list_head     sc_read_complete_q;
+	spinlock_t           sc_read_complete_lock;
+};
+/* sc_flags */
+#define RDMAXPRT_RQ_PENDING	1
+#define RDMAXPRT_SQ_PENDING	2
+#define RDMAXPRT_CONN_PENDING	3
+
+#define RPCRDMA_LISTEN_BACKLOG  10
+/* The default ORD value is based on two outstanding full-size writes with a
+ * page size of 4k, or 32k * 2 ops / 4k = 16 outstanding RDMA_READ.  */
+#define RPCRDMA_ORD             (64/4)
+#define RPCRDMA_SQ_DEPTH_MULT   8
+#define RPCRDMA_MAX_THREADS     16
+#define RPCRDMA_MAX_REQUESTS    16
+#define RPCRDMA_MAX_REQ_SIZE    4096
+
+/* svc_rdma_marshal.c */
+extern void svc_rdma_rcl_chunk_counts(struct rpcrdma_read_chunk *,
+				      int *, int *);
+extern int svc_rdma_xdr_decode_req(struct rpcrdma_msg **, struct svc_rqst *);
+extern int svc_rdma_xdr_decode_deferred_req(struct svc_rqst *);
+extern int svc_rdma_xdr_encode_error(struct svcxprt_rdma *,
+				     struct rpcrdma_msg *,
+				     enum rpcrdma_errcode, u32 *);
+extern void svc_rdma_xdr_encode_write_list(struct rpcrdma_msg *, int);
+extern void svc_rdma_xdr_encode_reply_array(struct rpcrdma_write_array *, int);
+extern void svc_rdma_xdr_encode_array_chunk(struct rpcrdma_write_array *, int,
+					    u32, u64, u32);
+extern void svc_rdma_xdr_encode_reply_header(struct svcxprt_rdma *,
+					     struct rpcrdma_msg *,
+					     struct rpcrdma_msg *,
+					     enum rpcrdma_proc);
+extern int svc_rdma_xdr_get_reply_hdr_len(struct rpcrdma_msg *);
+
+/* svc_rdma_recvfrom.c */
+extern int svc_rdma_recvfrom(struct svc_rqst *);
+
+/* svc_rdma_sendto.c */
+extern int svc_rdma_sendto(struct svc_rqst *);
+
+/* svc_rdma_transport.c */
+extern int svc_rdma_send(struct svcxprt_rdma *, struct ib_send_wr *);
+extern int svc_rdma_send_error(struct svcxprt_rdma *, struct rpcrdma_msg *,
+			       enum rpcrdma_errcode);
+struct page *svc_rdma_get_page(void);
+extern int svc_rdma_post_recv(struct svcxprt_rdma *);
+extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *);
+extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *);
+extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int);
+extern void svc_sq_reap(struct svcxprt_rdma *);
+extern void svc_rq_reap(struct svcxprt_rdma *);
+extern struct svc_xprt_class svc_rdma_class;
+extern void svc_rdma_prep_reply_hdr(struct svc_rqst *);
+
+/* svc_rdma.c */
+extern int svc_rdma_init(void);
+extern void svc_rdma_cleanup(void);
+
+/*
+ * Returns the address of the first read chunk or <nul> if no read chunk is
+ * present
+ */
+static inline struct rpcrdma_read_chunk *
+svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp)
+{
+	struct rpcrdma_read_chunk *ch =
+		(struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0];
+
+	if (ch->rc_discrim == 0)
+		return NULL;
+
+	return ch;
+}
+
+/*
+ * Returns the address of the first read write array element or <nul> if no
+ * write array list is present
+ */
+static inline struct rpcrdma_write_array *
+svc_rdma_get_write_array(struct rpcrdma_msg *rmsgp)
+{
+	if (rmsgp->rm_body.rm_chunks[0] != 0
+	    || rmsgp->rm_body.rm_chunks[1] == 0)
+		return NULL;
+
+	return (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[1];
+}
+
+/*
+ * Returns the address of the first reply array element or <nul> if no
+ * reply array is present
+ */
+static inline struct rpcrdma_write_array *
+svc_rdma_get_reply_array(struct rpcrdma_msg *rmsgp)
+{
+	struct rpcrdma_read_chunk *rch;
+	struct rpcrdma_write_array *wr_ary;
+	struct rpcrdma_write_array *rp_ary;
+
+	/* XXX: Need to fix when reply list may occur with read-list and/or
+	 * write list */
+	if (rmsgp->rm_body.rm_chunks[0] != 0 ||
+	    rmsgp->rm_body.rm_chunks[1] != 0)
+		return NULL;
+
+	rch = svc_rdma_get_read_chunk(rmsgp);
+	if (rch) {
+		while (rch->rc_discrim)
+			rch++;
+
+		/* The reply list follows an empty write array located
+		 * at 'rc_position' here. The reply array is at rc_target.
+		 */
+		rp_ary = (struct rpcrdma_write_array *)&rch->rc_target;
+
+		goto found_it;
+	}
+
+	wr_ary = svc_rdma_get_write_array(rmsgp);
+	if (wr_ary) {
+		rp_ary = (struct rpcrdma_write_array *)
+			&wr_ary->
+			wc_array[wr_ary->wc_nchunks].wc_target.rs_length;
+
+		goto found_it;
+	}
+
+	/* No read list, no write list */
+	rp_ary = (struct rpcrdma_write_array *)
+		&rmsgp->rm_body.rm_chunks[2];
+
+ found_it:
+	if (rp_ary->wc_discrim == 0)
+		return NULL;
+
+	return rp_ary;
+}
+#endif
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
new file mode 100644
index 00000000000..6fd7b016517
--- /dev/null
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -0,0 +1,159 @@
+/*
+ * linux/include/linux/sunrpc/svc_xprt.h
+ *
+ * RPC server transport I/O
+ */
+
+#ifndef SUNRPC_SVC_XPRT_H
+#define SUNRPC_SVC_XPRT_H
+
+#include <linux/sunrpc/svc.h>
+#include <linux/module.h>
+
+struct svc_xprt_ops {
+	struct svc_xprt	*(*xpo_create)(struct svc_serv *,
+				       struct sockaddr *, int,
+				       int);
+	struct svc_xprt	*(*xpo_accept)(struct svc_xprt *);
+	int		(*xpo_has_wspace)(struct svc_xprt *);
+	int		(*xpo_recvfrom)(struct svc_rqst *);
+	void		(*xpo_prep_reply_hdr)(struct svc_rqst *);
+	int		(*xpo_sendto)(struct svc_rqst *);
+	void		(*xpo_release_rqst)(struct svc_rqst *);
+	void		(*xpo_detach)(struct svc_xprt *);
+	void		(*xpo_free)(struct svc_xprt *);
+};
+
+struct svc_xprt_class {
+	const char		*xcl_name;
+	struct module		*xcl_owner;
+	struct svc_xprt_ops	*xcl_ops;
+	struct list_head	xcl_list;
+	u32			xcl_max_payload;
+};
+
+struct svc_xprt {
+	struct svc_xprt_class	*xpt_class;
+	struct svc_xprt_ops	*xpt_ops;
+	struct kref		xpt_ref;
+	struct list_head	xpt_list;
+	struct list_head	xpt_ready;
+	unsigned long		xpt_flags;
+#define	XPT_BUSY	0		/* enqueued/receiving */
+#define	XPT_CONN	1		/* conn pending */
+#define	XPT_CLOSE	2		/* dead or dying */
+#define	XPT_DATA	3		/* data pending */
+#define	XPT_TEMP	4		/* connected transport */
+#define	XPT_DEAD	6		/* transport closed */
+#define	XPT_CHNGBUF	7		/* need to change snd/rcv buf sizes */
+#define	XPT_DEFERRED	8		/* deferred request pending */
+#define	XPT_OLD		9		/* used for xprt aging mark+sweep */
+#define	XPT_DETACHED	10		/* detached from tempsocks list */
+#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 */
+	spinlock_t		xpt_lock;	/* protects sk_deferred
+						 * and xpt_auth_cache */
+	void			*xpt_auth_cache;/* auth cache */
+	struct list_head	xpt_deferred;	/* deferred requests that need
+						 * to be revisted */
+	struct sockaddr_storage	xpt_local;	/* local address */
+	size_t			xpt_locallen;	/* length of address */
+	struct sockaddr_storage	xpt_remote;	/* remote peer's address */
+	size_t			xpt_remotelen;	/* length of address */
+};
+
+int	svc_reg_xprt_class(struct svc_xprt_class *);
+void	svc_unreg_xprt_class(struct svc_xprt_class *);
+void	svc_xprt_init(struct svc_xprt_class *, struct svc_xprt *,
+		      struct svc_serv *);
+int	svc_create_xprt(struct svc_serv *, char *, unsigned short, int);
+void	svc_xprt_enqueue(struct svc_xprt *xprt);
+void	svc_xprt_received(struct svc_xprt *);
+void	svc_xprt_put(struct svc_xprt *xprt);
+void	svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt);
+void	svc_close_xprt(struct svc_xprt *xprt);
+void	svc_delete_xprt(struct svc_xprt *xprt);
+int	svc_port_is_privileged(struct sockaddr *sin);
+int	svc_print_xprts(char *buf, int maxlen);
+struct	svc_xprt *svc_find_xprt(struct svc_serv *, char *, int, int);
+int	svc_xprt_names(struct svc_serv *serv, char *buf, int buflen);
+
+static inline void svc_xprt_get(struct svc_xprt *xprt)
+{
+	kref_get(&xprt->xpt_ref);
+}
+static inline void svc_xprt_set_local(struct svc_xprt *xprt,
+				      struct sockaddr *sa, int salen)
+{
+	memcpy(&xprt->xpt_local, sa, salen);
+	xprt->xpt_locallen = salen;
+}
+static inline void svc_xprt_set_remote(struct svc_xprt *xprt,
+				       struct sockaddr *sa, int salen)
+{
+	memcpy(&xprt->xpt_remote, sa, salen);
+	xprt->xpt_remotelen = salen;
+}
+static inline unsigned short svc_addr_port(struct sockaddr *sa)
+{
+	unsigned short ret = 0;
+	switch (sa->sa_family) {
+	case AF_INET:
+		ret = ntohs(((struct sockaddr_in *)sa)->sin_port);
+		break;
+	case AF_INET6:
+		ret = ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
+		break;
+	}
+	return ret;
+}
+
+static inline size_t svc_addr_len(struct sockaddr *sa)
+{
+	switch (sa->sa_family) {
+	case AF_INET:
+		return sizeof(struct sockaddr_in);
+	case AF_INET6:
+		return sizeof(struct sockaddr_in6);
+	}
+	return -EAFNOSUPPORT;
+}
+
+static inline unsigned short svc_xprt_local_port(struct svc_xprt *xprt)
+{
+	return svc_addr_port((struct sockaddr *)&xprt->xpt_local);
+}
+
+static inline unsigned short svc_xprt_remote_port(struct svc_xprt *xprt)
+{
+	return svc_addr_port((struct sockaddr *)&xprt->xpt_remote);
+}
+
+static inline char *__svc_print_addr(struct sockaddr *addr,
+				     char *buf, size_t len)
+{
+	switch (addr->sa_family) {
+	case AF_INET:
+		snprintf(buf, len, "%u.%u.%u.%u, port=%u",
+			NIPQUAD(((struct sockaddr_in *) addr)->sin_addr),
+			ntohs(((struct sockaddr_in *) addr)->sin_port));
+		break;
+
+	case AF_INET6:
+		snprintf(buf, len, "%x:%x:%x:%x:%x:%x:%x:%x, port=%u",
+			NIP6(((struct sockaddr_in6 *) addr)->sin6_addr),
+			ntohs(((struct sockaddr_in6 *) addr)->sin6_port));
+		break;
+
+	default:
+		snprintf(buf, len, "unknown address type: %d", addr->sa_family);
+		break;
+	}
+	return buf;
+}
+#endif /* SUNRPC_SVC_XPRT_H */
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h
index a53e0fa855d..206f092ad4c 100644
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -10,42 +10,16 @@
 #define SUNRPC_SVCSOCK_H
 
 #include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svc_xprt.h>
 
 /*
  * RPC server socket.
  */
 struct svc_sock {
-	struct list_head	sk_ready;	/* list of ready sockets */
-	struct list_head	sk_list;	/* list of all sockets */
+	struct svc_xprt		sk_xprt;
 	struct socket *		sk_sock;	/* berkeley socket layer */
 	struct sock *		sk_sk;		/* INET layer */
 
-	struct svc_pool *	sk_pool;	/* current pool iff queued */
-	struct svc_serv *	sk_server;	/* service for this socket */
-	atomic_t		sk_inuse;	/* use count */
-	unsigned long		sk_flags;
-#define	SK_BUSY		0			/* enqueued/receiving */
-#define	SK_CONN		1			/* conn pending */
-#define	SK_CLOSE	2			/* dead or dying */
-#define	SK_DATA		3			/* data pending */
-#define	SK_TEMP		4			/* temp (TCP) socket */
-#define	SK_DEAD		6			/* socket closed */
-#define	SK_CHNGBUF	7			/* need to change snd/rcv buffer sizes */
-#define	SK_DEFERRED	8			/* request on sk_deferred */
-#define	SK_OLD		9			/* used for temp socket aging mark+sweep */
-#define	SK_DETACHED	10			/* detached from tempsocks list */
-
-	atomic_t    	    	sk_reserved;	/* space on outq that is reserved */
-
-	spinlock_t		sk_lock;	/* protects sk_deferred and
-						 * sk_info_authunix */
-	struct list_head	sk_deferred;	/* deferred requests that need to
-						 * be revisted */
-	struct mutex		sk_mutex;	/* to serialize sending data */
-
-	int			(*sk_recvfrom)(struct svc_rqst *rqstp);
-	int			(*sk_sendto)(struct svc_rqst *rqstp);
-
 	/* We keep the old state_change and data_ready CB's here */
 	void			(*sk_ostate)(struct sock *);
 	void			(*sk_odata)(struct sock *, int bytes);
@@ -54,21 +28,12 @@ struct svc_sock {
 	/* private TCP part */
 	int			sk_reclen;	/* length of record */
 	int			sk_tcplen;	/* current read length */
-	time_t			sk_lastrecv;	/* time of last received request */
-
-	/* cache of various info for TCP sockets */
-	void			*sk_info_authunix;
-
-	struct sockaddr_storage	sk_local;	/* local address */
-	struct sockaddr_storage	sk_remote;	/* remote peer's address */
-	int			sk_remotelen;	/* length of address */
 };
 
 /*
  * Function prototypes.
  */
-int		svc_makesock(struct svc_serv *, int, unsigned short, int flags);
-void		svc_force_close_socket(struct svc_sock *);
+void		svc_close_all(struct list_head *);
 int		svc_recv(struct svc_rqst *, long);
 int		svc_send(struct svc_rqst *);
 void		svc_drop(struct svc_rqst *);
@@ -78,6 +43,8 @@ int		svc_addsock(struct svc_serv *serv,
 			    int fd,
 			    char *name_return,
 			    int *proto);
+void		svc_init_xprt_sock(void);
+void		svc_cleanup_xprt_sock(void);
 
 /*
  * svc_makesock socket characteristics
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 0751c9464d0..e4057d729f0 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -112,7 +112,8 @@ struct xdr_buf {
 __be32 *xdr_encode_opaque_fixed(__be32 *p, const void *ptr, unsigned int len);
 __be32 *xdr_encode_opaque(__be32 *p, const void *ptr, unsigned int len);
 __be32 *xdr_encode_string(__be32 *p, const char *s);
-__be32 *xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen);
+__be32 *xdr_decode_string_inplace(__be32 *p, char **sp, unsigned int *lenp,
+			unsigned int maxlen);
 __be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *);
 __be32 *xdr_decode_netobj(__be32 *p, struct xdr_netobj *);