2005-04-17 06:20:36 +08:00
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/*
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2005-08-12 04:25:47 +08:00
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* linux/include/linux/sunrpc/xprt.h
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2005-04-17 06:20:36 +08:00
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*
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* Declarations for the RPC transport interface.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef _LINUX_SUNRPC_XPRT_H
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#define _LINUX_SUNRPC_XPRT_H
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#include <linux/uio.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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2010-05-08 01:34:47 +08:00
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#include <linux/ktime.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/sunrpc/sched.h>
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#include <linux/sunrpc/xdr.h>
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2006-10-04 17:15:47 +08:00
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#include <linux/sunrpc/msg_prot.h>
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2005-04-17 06:20:36 +08:00
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2007-07-08 19:08:54 +08:00
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#ifdef __KERNEL__
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2005-04-17 06:20:36 +08:00
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#define RPC_MIN_SLOT_TABLE (2U)
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#define RPC_DEF_SLOT_TABLE (16U)
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2011-07-18 06:11:30 +08:00
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#define RPC_MAX_SLOT_TABLE_LIMIT (65536U)
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2012-02-07 04:18:48 +08:00
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#define RPC_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE_LIMIT
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2005-04-17 06:20:36 +08:00
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2014-05-28 22:34:49 +08:00
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#define RPC_CWNDSHIFT (8U)
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#define RPC_CWNDSCALE (1U << RPC_CWNDSHIFT)
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#define RPC_INITCWND RPC_CWNDSCALE
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#define RPC_MAXCWND(xprt) ((xprt)->max_reqs << RPC_CWNDSHIFT)
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#define RPCXPRT_CONGESTED(xprt) ((xprt)->cong >= (xprt)->cwnd)
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2005-04-17 06:20:36 +08:00
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/*
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* This describes a timeout strategy
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*/
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struct rpc_timeout {
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unsigned long to_initval, /* initial timeout */
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to_maxval, /* max timeout */
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to_increment; /* if !exponential */
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unsigned int to_retries; /* max # of retries */
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unsigned char to_exponential;
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};
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2006-08-23 08:06:18 +08:00
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enum rpc_display_format_t {
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RPC_DISPLAY_ADDR = 0,
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RPC_DISPLAY_PORT,
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RPC_DISPLAY_PROTO,
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2007-08-06 23:57:02 +08:00
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RPC_DISPLAY_HEX_ADDR,
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RPC_DISPLAY_HEX_PORT,
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2007-09-11 01:43:05 +08:00
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RPC_DISPLAY_NETID,
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2006-08-23 08:06:18 +08:00
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RPC_DISPLAY_MAX,
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};
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2005-08-26 07:25:54 +08:00
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struct rpc_task;
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struct rpc_xprt;
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2006-04-19 01:21:42 +08:00
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struct seq_file;
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2005-08-26 07:25:54 +08:00
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2005-04-17 06:20:36 +08:00
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/*
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* This describes a complete RPC request
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*/
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struct rpc_rqst {
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/*
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* This is the user-visible part
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*/
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struct rpc_xprt * rq_xprt; /* RPC client */
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struct xdr_buf rq_snd_buf; /* send buffer */
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struct xdr_buf rq_rcv_buf; /* recv buffer */
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/*
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* This is the private part
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*/
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struct rpc_task * rq_task; /* RPC task data */
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2010-08-01 02:29:08 +08:00
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struct rpc_cred * rq_cred; /* Bound cred */
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2006-09-27 13:29:38 +08:00
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__be32 rq_xid; /* request XID */
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2005-04-17 06:20:36 +08:00
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int rq_cong; /* has incremented xprt->cong */
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u32 rq_seqno; /* gss seq no. used on req. */
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2005-10-14 04:54:43 +08:00
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int rq_enc_pages_num;
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struct page **rq_enc_pages; /* scratch pages for use by
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gss privacy code */
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void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */
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2005-04-17 06:20:36 +08:00
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struct list_head rq_list;
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2006-01-03 16:55:49 +08:00
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__u32 * rq_buffer; /* XDR encode buffer */
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2008-12-24 05:06:13 +08:00
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size_t rq_callsize,
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2007-03-30 04:47:53 +08:00
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rq_rcvsize;
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2010-05-14 00:51:49 +08:00
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size_t rq_xmit_bytes_sent; /* total bytes sent */
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size_t rq_reply_bytes_recvd; /* total reply bytes */
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/* received */
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2006-01-03 16:55:49 +08:00
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2005-04-17 06:20:36 +08:00
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struct xdr_buf rq_private_buf; /* The receive buffer
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* used in the softirq.
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*/
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unsigned long rq_majortimeo; /* major timeout alarm */
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unsigned long rq_timeout; /* Current timeout value */
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2010-05-14 00:51:49 +08:00
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ktime_t rq_rtt; /* round-trip time */
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2005-04-17 06:20:36 +08:00
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unsigned int rq_retries; /* # of retries */
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2008-04-18 04:52:57 +08:00
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unsigned int rq_connect_cookie;
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/* A cookie used to track the
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state of the transport
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connection */
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2005-04-17 06:20:36 +08:00
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/*
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* Partial send handling
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*/
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u32 rq_bytes_sent; /* Bytes we have sent */
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2010-05-08 01:34:47 +08:00
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ktime_t rq_xtime; /* transmit time stamp */
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2005-04-17 06:20:36 +08:00
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int rq_ntrans;
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2009-04-01 21:22:58 +08:00
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2011-07-14 07:20:49 +08:00
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#if defined(CONFIG_SUNRPC_BACKCHANNEL)
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2009-04-01 21:22:58 +08:00
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struct list_head rq_bc_list; /* Callback service list */
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unsigned long rq_bc_pa_state; /* Backchannel prealloc state */
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struct list_head rq_bc_pa_list; /* Backchannel prealloc list */
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2011-07-14 07:20:49 +08:00
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#endif /* CONFIG_SUNRPC_BACKCHANEL */
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2005-04-17 06:20:36 +08:00
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};
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#define rq_svec rq_snd_buf.head
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#define rq_slen rq_snd_buf.len
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2005-08-12 04:25:23 +08:00
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struct rpc_xprt_ops {
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2005-08-26 07:25:56 +08:00
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void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize);
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2011-07-18 04:01:03 +08:00
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int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
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2005-08-26 07:25:51 +08:00
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void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
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2012-09-07 23:08:50 +08:00
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void (*alloc_slot)(struct rpc_xprt *xprt, struct rpc_task *task);
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2006-08-23 08:06:16 +08:00
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void (*rpcbind)(struct rpc_task *task);
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2006-01-03 16:55:51 +08:00
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void (*set_port)(struct rpc_xprt *xprt, unsigned short port);
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2013-01-08 22:26:49 +08:00
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void (*connect)(struct rpc_xprt *xprt, struct rpc_task *task);
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2006-01-03 16:55:49 +08:00
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void * (*buf_alloc)(struct rpc_task *task, size_t size);
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2007-03-30 04:47:58 +08:00
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void (*buf_free)(void *buffer);
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2005-08-12 04:25:23 +08:00
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int (*send_request)(struct rpc_task *task);
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2005-08-26 07:25:50 +08:00
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void (*set_retrans_timeout)(struct rpc_task *task);
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2013-01-08 22:48:15 +08:00
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void (*timer)(struct rpc_xprt *xprt, struct rpc_task *task);
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2005-08-26 07:25:53 +08:00
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void (*release_request)(struct rpc_task *task);
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2005-08-12 04:25:23 +08:00
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void (*close)(struct rpc_xprt *xprt);
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void (*destroy)(struct rpc_xprt *xprt);
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2006-03-21 02:44:16 +08:00
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void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq);
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2005-08-12 04:25:23 +08:00
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};
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2005-04-17 06:20:36 +08:00
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2009-09-10 22:33:30 +08:00
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/*
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* RPC transport identifiers
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*
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* To preserve compatibility with the historical use of raw IP protocol
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* id's for transport selection, UDP and TCP identifiers are specified
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* with the previous values. No such restriction exists for new transports,
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* except that they may not collide with these values (17 and 6,
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* respectively).
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*/
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#define XPRT_TRANSPORT_BC (1 << 31)
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enum xprt_transports {
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XPRT_TRANSPORT_UDP = IPPROTO_UDP,
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XPRT_TRANSPORT_TCP = IPPROTO_TCP,
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XPRT_TRANSPORT_BC_TCP = IPPROTO_TCP | XPRT_TRANSPORT_BC,
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2011-05-10 03:22:44 +08:00
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XPRT_TRANSPORT_RDMA = 256,
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XPRT_TRANSPORT_LOCAL = 257,
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2009-09-10 22:33:30 +08:00
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};
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2005-04-17 06:20:36 +08:00
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struct rpc_xprt {
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2011-03-16 07:56:30 +08:00
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atomic_t count; /* Reference count */
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2005-08-12 04:25:23 +08:00
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struct rpc_xprt_ops * ops; /* transport methods */
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2005-04-17 06:20:36 +08:00
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2007-12-21 05:03:55 +08:00
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const struct rpc_timeout *timeout; /* timeout parms */
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2006-08-23 08:06:19 +08:00
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struct sockaddr_storage addr; /* server address */
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size_t addrlen; /* size of server address */
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2005-04-17 06:20:36 +08:00
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int prot; /* IP protocol */
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unsigned long cong; /* current congestion */
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unsigned long cwnd; /* congestion window */
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size_t max_payload; /* largest RPC payload size,
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in bytes */
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2005-08-26 07:25:49 +08:00
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unsigned int tsh_size; /* size of transport specific
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header */
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2005-04-17 06:20:36 +08:00
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2006-08-23 08:06:15 +08:00
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struct rpc_wait_queue binding; /* requests waiting on rpcbind */
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2005-04-17 06:20:36 +08:00
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struct rpc_wait_queue sending; /* requests waiting to send */
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struct rpc_wait_queue pending; /* requests in flight */
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struct rpc_wait_queue backlog; /* waiting for slot */
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struct list_head free; /* free slots */
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2011-07-18 06:11:30 +08:00
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unsigned int max_reqs; /* max number of slots */
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unsigned int min_reqs; /* min number of slots */
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atomic_t num_reqs; /* total slots */
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2005-08-12 04:25:38 +08:00
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unsigned long state; /* transport state */
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2012-09-12 05:21:25 +08:00
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unsigned char resvport : 1; /* use a reserved port */
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2012-08-01 07:45:12 +08:00
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unsigned int swapper; /* we're swapping over this
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transport */
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2007-03-30 04:48:04 +08:00
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unsigned int bind_index; /* bind function index */
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2005-04-17 06:20:36 +08:00
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/*
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2005-08-12 04:25:47 +08:00
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* Connection of transports
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2005-04-17 06:20:36 +08:00
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*/
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2010-04-17 04:42:12 +08:00
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unsigned long bind_timeout,
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2005-08-26 07:25:55 +08:00
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reestablish_timeout;
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2008-04-18 04:52:57 +08:00
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unsigned int connect_cookie; /* A cookie that gets bumped
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every time the transport
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is reconnected */
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2005-08-26 07:25:55 +08:00
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2005-04-17 06:20:36 +08:00
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/*
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2005-08-12 04:25:47 +08:00
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* Disconnection of idle transports
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2005-04-17 06:20:36 +08:00
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*/
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struct work_struct task_cleanup;
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struct timer_list timer;
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2005-08-26 07:25:55 +08:00
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unsigned long last_used,
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idle_timeout;
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2005-04-17 06:20:36 +08:00
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/*
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* Send stuff
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*/
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2005-08-12 04:25:32 +08:00
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spinlock_t transport_lock; /* lock transport info */
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2005-08-12 04:25:35 +08:00
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spinlock_t reserve_lock; /* lock slot table */
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2006-10-18 02:44:24 +08:00
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u32 xid; /* Next XID value to use */
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2005-04-17 06:20:36 +08:00
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struct rpc_task * snd_task; /* Task blocked in send */
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2009-09-10 22:32:28 +08:00
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struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
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2011-07-14 07:20:49 +08:00
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#if defined(CONFIG_SUNRPC_BACKCHANNEL)
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2009-04-01 21:22:58 +08:00
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struct svc_serv *bc_serv; /* The RPC service which will */
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/* process the callback */
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2009-04-01 21:23:00 +08:00
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unsigned int bc_alloc_count; /* Total number of preallocs */
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2009-04-01 21:22:58 +08:00
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spinlock_t bc_pa_lock; /* Protects the preallocated
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* items */
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struct list_head bc_pa_list; /* List of preallocated
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* backchannel rpc_rqst's */
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2011-07-14 07:20:49 +08:00
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#endif /* CONFIG_SUNRPC_BACKCHANNEL */
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2005-04-17 06:20:36 +08:00
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struct list_head recv;
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2006-03-21 02:44:16 +08:00
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struct {
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unsigned long bind_count, /* total number of binds */
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connect_count, /* total number of connects */
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connect_start, /* connect start timestamp */
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connect_time, /* jiffies waiting for connect */
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sends, /* how many complete requests */
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recvs, /* how many complete requests */
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2012-02-15 05:19:18 +08:00
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bad_xids, /* lookup_rqst didn't find XID */
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max_slots; /* max rpc_slots used */
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2006-03-21 02:44:16 +08:00
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unsigned long long req_u, /* average requests on the wire */
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2012-02-15 05:19:18 +08:00
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bklog_u, /* backlog queue utilization */
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sending_u, /* send q utilization */
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pending_u; /* pend q utilization */
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2006-03-21 02:44:16 +08:00
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} stat;
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2005-04-17 06:20:36 +08:00
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2010-09-29 20:05:43 +08:00
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struct net *xprt_net;
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2012-03-02 06:01:05 +08:00
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const char *servername;
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2008-01-08 07:34:48 +08:00
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const char *address_strings[RPC_DISPLAY_MAX];
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2005-04-17 06:20:36 +08:00
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};
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2011-07-14 07:20:49 +08:00
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#if defined(CONFIG_SUNRPC_BACKCHANNEL)
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2009-04-01 21:22:58 +08:00
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/*
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* Backchannel flags
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*/
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#define RPC_BC_PA_IN_USE 0x0001 /* Preallocated backchannel */
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/* buffer in use */
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2011-07-14 07:20:49 +08:00
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#endif /* CONFIG_SUNRPC_BACKCHANNEL */
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2009-04-01 21:22:58 +08:00
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2011-07-14 07:20:49 +08:00
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#if defined(CONFIG_SUNRPC_BACKCHANNEL)
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2009-04-01 21:23:03 +08:00
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static inline int bc_prealloc(struct rpc_rqst *req)
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{
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return test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
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}
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#else
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static inline int bc_prealloc(struct rpc_rqst *req)
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{
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return 0;
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}
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2011-07-14 07:20:49 +08:00
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#endif /* CONFIG_SUNRPC_BACKCHANNEL */
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2009-04-01 21:23:03 +08:00
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2013-04-14 23:42:00 +08:00
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#define XPRT_CREATE_INFINITE_SLOTS (1U)
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2013-04-12 03:06:36 +08:00
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#define XPRT_CREATE_NO_IDLE_TIMEOUT (1U << 1)
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2013-04-14 23:42:00 +08:00
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2007-09-11 01:47:07 +08:00
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|
struct xprt_create {
|
2007-09-11 01:47:57 +08:00
|
|
|
int ident; /* XPRT_TRANSPORT identifier */
|
2010-09-29 20:05:12 +08:00
|
|
|
struct net * net;
|
2007-07-10 04:23:35 +08:00
|
|
|
struct sockaddr * srcaddr; /* optional local address */
|
2007-07-08 19:08:54 +08:00
|
|
|
struct sockaddr * dstaddr; /* remote peer address */
|
|
|
|
size_t addrlen;
|
2012-03-02 06:01:05 +08:00
|
|
|
const char *servername;
|
2009-09-10 22:33:30 +08:00
|
|
|
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
|
2013-04-14 23:42:00 +08:00
|
|
|
unsigned int flags;
|
2007-07-08 19:08:54 +08:00
|
|
|
};
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2007-09-11 01:46:00 +08:00
|
|
|
struct xprt_class {
|
|
|
|
struct list_head list;
|
2007-09-11 01:47:57 +08:00
|
|
|
int ident; /* XPRT_TRANSPORT identifier */
|
2007-09-11 01:47:07 +08:00
|
|
|
struct rpc_xprt * (*setup)(struct xprt_create *);
|
2007-09-11 01:46:00 +08:00
|
|
|
struct module *owner;
|
|
|
|
char name[32];
|
|
|
|
};
|
|
|
|
|
2005-08-12 04:25:47 +08:00
|
|
|
/*
|
|
|
|
* Generic internal transport functions
|
|
|
|
*/
|
2007-09-11 01:47:07 +08:00
|
|
|
struct rpc_xprt *xprt_create_transport(struct xprt_create *args);
|
2005-08-12 04:25:47 +08:00
|
|
|
void xprt_connect(struct rpc_task *task);
|
|
|
|
void xprt_reserve(struct rpc_task *task);
|
2013-04-14 22:49:37 +08:00
|
|
|
void xprt_retry_reserve(struct rpc_task *task);
|
2011-07-18 04:01:03 +08:00
|
|
|
int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task);
|
|
|
|
int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task);
|
2012-09-07 23:08:50 +08:00
|
|
|
void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task);
|
|
|
|
void xprt_lock_and_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task);
|
2013-09-26 00:17:18 +08:00
|
|
|
bool xprt_prepare_transmit(struct rpc_task *task);
|
2005-08-12 04:25:47 +08:00
|
|
|
void xprt_transmit(struct rpc_task *task);
|
2006-07-28 05:22:50 +08:00
|
|
|
void xprt_end_transmit(struct rpc_task *task);
|
2005-04-17 06:20:36 +08:00
|
|
|
int xprt_adjust_timeout(struct rpc_rqst *req);
|
2005-08-26 07:25:51 +08:00
|
|
|
void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task);
|
|
|
|
void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task);
|
2005-08-12 04:25:47 +08:00
|
|
|
void xprt_release(struct rpc_task *task);
|
2006-09-06 00:55:57 +08:00
|
|
|
void xprt_put(struct rpc_xprt *xprt);
|
2011-07-18 06:11:30 +08:00
|
|
|
struct rpc_xprt * xprt_alloc(struct net *net, size_t size,
|
|
|
|
unsigned int num_prealloc,
|
|
|
|
unsigned int max_req);
|
2010-09-29 20:03:13 +08:00
|
|
|
void xprt_free(struct rpc_xprt *);
|
2005-08-12 04:25:47 +08:00
|
|
|
|
2014-03-24 11:59:46 +08:00
|
|
|
/**
|
|
|
|
* xprt_get - return a reference to an RPC transport.
|
|
|
|
* @xprt: pointer to the transport
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static inline struct rpc_xprt *xprt_get(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
if (atomic_inc_not_zero(&xprt->count))
|
|
|
|
return xprt;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2006-09-27 13:29:38 +08:00
|
|
|
static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p)
|
2005-08-26 07:25:49 +08:00
|
|
|
{
|
|
|
|
return p + xprt->tsh_size;
|
|
|
|
}
|
|
|
|
|
2005-08-12 04:25:47 +08:00
|
|
|
/*
|
|
|
|
* Transport switch helper functions
|
|
|
|
*/
|
2007-09-11 01:46:00 +08:00
|
|
|
int xprt_register_transport(struct xprt_class *type);
|
|
|
|
int xprt_unregister_transport(struct xprt_class *type);
|
2009-03-12 02:37:56 +08:00
|
|
|
int xprt_load_transport(const char *);
|
2005-08-26 07:25:50 +08:00
|
|
|
void xprt_set_retrans_timeout_def(struct rpc_task *task);
|
|
|
|
void xprt_set_retrans_timeout_rtt(struct rpc_task *task);
|
2005-08-12 04:25:47 +08:00
|
|
|
void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status);
|
2008-04-18 06:52:19 +08:00
|
|
|
void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action);
|
2005-08-12 04:25:50 +08:00
|
|
|
void xprt_write_space(struct rpc_xprt *xprt);
|
2013-01-08 22:48:15 +08:00
|
|
|
void xprt_adjust_cwnd(struct rpc_xprt *xprt, struct rpc_task *task, int result);
|
2006-09-27 13:29:38 +08:00
|
|
|
struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid);
|
2005-08-26 07:25:52 +08:00
|
|
|
void xprt_complete_rqst(struct rpc_task *task, int copied);
|
2005-08-26 07:25:53 +08:00
|
|
|
void xprt_release_rqst_cong(struct rpc_task *task);
|
2007-11-07 07:44:20 +08:00
|
|
|
void xprt_disconnect_done(struct rpc_xprt *xprt);
|
2007-11-06 23:18:36 +08:00
|
|
|
void xprt_force_disconnect(struct rpc_xprt *xprt);
|
2008-04-18 04:52:57 +08:00
|
|
|
void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie);
|
2012-08-01 07:45:12 +08:00
|
|
|
int xs_swapper(struct rpc_xprt *xprt, int enable);
|
2005-08-12 04:25:47 +08:00
|
|
|
|
2005-08-12 04:25:38 +08:00
|
|
|
/*
|
|
|
|
* Reserved bit positions in xprt->state
|
|
|
|
*/
|
|
|
|
#define XPRT_LOCKED (0)
|
|
|
|
#define XPRT_CONNECTED (1)
|
|
|
|
#define XPRT_CONNECTING (2)
|
2006-01-03 16:55:55 +08:00
|
|
|
#define XPRT_CLOSE_WAIT (3)
|
2006-08-23 08:06:15 +08:00
|
|
|
#define XPRT_BOUND (4)
|
2006-08-23 08:06:15 +08:00
|
|
|
#define XPRT_BINDING (5)
|
2007-11-06 06:42:39 +08:00
|
|
|
#define XPRT_CLOSING (6)
|
2009-03-12 02:38:03 +08:00
|
|
|
#define XPRT_CONNECTION_ABORT (7)
|
2009-04-22 05:18:20 +08:00
|
|
|
#define XPRT_CONNECTION_CLOSE (8)
|
2013-04-14 22:49:37 +08:00
|
|
|
#define XPRT_CONGESTED (9)
|
2005-08-12 04:25:38 +08:00
|
|
|
|
|
|
|
static inline void xprt_set_connected(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
set_bit(XPRT_CONNECTED, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void xprt_clear_connected(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
clear_bit(XPRT_CONNECTED, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_connected(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_bit(XPRT_CONNECTED, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_test_and_set_connected(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_and_set_bit(XPRT_CONNECTED, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_and_clear_bit(XPRT_CONNECTED, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void xprt_clear_connecting(struct rpc_xprt *xprt)
|
|
|
|
{
|
2014-03-18 01:06:10 +08:00
|
|
|
smp_mb__before_atomic();
|
2005-08-12 04:25:38 +08:00
|
|
|
clear_bit(XPRT_CONNECTING, &xprt->state);
|
2014-03-18 01:06:10 +08:00
|
|
|
smp_mb__after_atomic();
|
2005-08-12 04:25:38 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_connecting(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_bit(XPRT_CONNECTING, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_test_and_set_connecting(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_and_set_bit(XPRT_CONNECTING, &xprt->state);
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-08-23 08:06:15 +08:00
|
|
|
static inline void xprt_set_bound(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
test_and_set_bit(XPRT_BOUND, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_bound(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_bit(XPRT_BOUND, &xprt->state);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void xprt_clear_bound(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
clear_bit(XPRT_BOUND, &xprt->state);
|
|
|
|
}
|
|
|
|
|
2006-08-23 08:06:15 +08:00
|
|
|
static inline void xprt_clear_binding(struct rpc_xprt *xprt)
|
|
|
|
{
|
2014-03-18 01:06:10 +08:00
|
|
|
smp_mb__before_atomic();
|
2006-08-23 08:06:15 +08:00
|
|
|
clear_bit(XPRT_BINDING, &xprt->state);
|
2014-03-18 01:06:10 +08:00
|
|
|
smp_mb__after_atomic();
|
2006-08-23 08:06:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int xprt_test_and_set_binding(struct rpc_xprt *xprt)
|
|
|
|
{
|
|
|
|
return test_and_set_bit(XPRT_BINDING, &xprt->state);
|
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
#endif /* __KERNEL__*/
|
|
|
|
|
|
|
|
#endif /* _LINUX_SUNRPC_XPRT_H */
|