LXR linux/include/linux/sunrpc/xprtsock.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *  linux/include/linux/sunrpc/xprtsock.h
   4 *
   5 *  Declarations for the RPC transport socket provider.
   6 */
   7
   8#ifndef _LINUX_SUNRPC_XPRTSOCK_H
   9#define _LINUX_SUNRPC_XPRTSOCK_H
  10
  11int             init_socket_xprt(void);
  12void            cleanup_socket_xprt(void);
  13unsigned short  get_srcport(struct rpc_xprt *);
  14
  15#define RPC_MIN_RESVPORT        (1U)
  16#define RPC_MAX_RESVPORT        (65535U)
  17#define RPC_DEF_MIN_RESVPORT    (665U)
  18#define RPC_DEF_MAX_RESVPORT    (1023U)
  19
  20struct sock_xprt {
  21        struct rpc_xprt         xprt;
  22
  23        /*
  24         * Network layer
  25         */
  26        struct socket *         sock;
  27        struct sock *           inet;
  28        struct file *           file;
  29
  30        /*
  31         * State of TCP reply receive
  32         */
  33        struct {
  34                struct {
  35                        __be32  fraghdr,
  36                                xid,
  37                                calldir;
  38                } __attribute__((packed));
  39
  40                u32             offset,
  41                                len;
  42
  43                unsigned long   copied;
  44        } recv;
  45
  46        /*
  47         * State of TCP transmit queue
  48         */
  49        struct {
  50                u32             offset;
  51        } xmit;
  52
  53        /*
  54         * Connection of transports
  55         */
  56        unsigned long           sock_state;
  57        struct delayed_work     connect_worker;
  58        struct work_struct      error_worker;
  59        struct work_struct      recv_worker;
  60        struct mutex            recv_mutex;
  61        struct sockaddr_storage srcaddr;
  62        unsigned short          srcport;
  63        int                     xprt_err;
  64
  65        /*
  66         * UDP socket buffer size parameters
  67         */
  68        size_t                  rcvsize,
  69                                sndsize;
  70
  71        struct rpc_timeout      tcp_timeout;
  72
  73        /*
  74         * Saved socket callback addresses
  75         */
  76        void                    (*old_data_ready)(struct sock *);
  77        void                    (*old_state_change)(struct sock *);
  78        void                    (*old_write_space)(struct sock *);
  79        void                    (*old_error_report)(struct sock *);
  80};
  81
  82/*
  83 * TCP RPC flags
  84 */
  85#define XPRT_SOCK_CONNECTING    1U
  86#define XPRT_SOCK_DATA_READY    (2)
  87#define XPRT_SOCK_UPD_TIMEOUT   (3)
  88#define XPRT_SOCK_WAKE_ERROR    (4)
  89#define XPRT_SOCK_WAKE_WRITE    (5)
  90#define XPRT_SOCK_WAKE_PENDING  (6)
  91#define XPRT_SOCK_WAKE_DISCONNECT       (7)
  92
  93#endif /* _LINUX_SUNRPC_XPRTSOCK_H */
  94