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

   1/*
   2 *  linux/include/linux/sunrpc/xprtsock.h
   3 *
   4 *  Declarations for the RPC transport socket provider.
   5 */
   6
   7#ifndef _LINUX_SUNRPC_XPRTSOCK_H
   8#define _LINUX_SUNRPC_XPRTSOCK_H
   9
  10#ifdef __KERNEL__
  11
  12int             init_socket_xprt(void);
  13void            cleanup_socket_xprt(void);
  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
  29        /*
  30         * State of TCP reply receive
  31         */
  32        __be32                  tcp_fraghdr,
  33                                tcp_xid,
  34                                tcp_calldir;
  35
  36        u32                     tcp_offset,
  37                                tcp_reclen;
  38
  39        unsigned long           tcp_copied,
  40                                tcp_flags;
  41
  42        /*
  43         * Connection of transports
  44         */
  45        unsigned long           sock_state;
  46        struct delayed_work     connect_worker;
  47        struct work_struct      recv_worker;
  48        struct mutex            recv_mutex;
  49        struct sockaddr_storage srcaddr;
  50        unsigned short          srcport;
  51
  52        /*
  53         * UDP socket buffer size parameters
  54         */
  55        size_t                  rcvsize,
  56                                sndsize;
  57
  58        /*
  59         * Saved socket callback addresses
  60         */
  61        void                    (*old_data_ready)(struct sock *);
  62        void                    (*old_state_change)(struct sock *);
  63        void                    (*old_write_space)(struct sock *);
  64        void                    (*old_error_report)(struct sock *);
  65};
  66
  67/*
  68 * TCP receive state flags
  69 */
  70#define TCP_RCV_LAST_FRAG       (1UL << 0)
  71#define TCP_RCV_COPY_FRAGHDR    (1UL << 1)
  72#define TCP_RCV_COPY_XID        (1UL << 2)
  73#define TCP_RCV_COPY_DATA       (1UL << 3)
  74#define TCP_RCV_READ_CALLDIR    (1UL << 4)
  75#define TCP_RCV_COPY_CALLDIR    (1UL << 5)
  76
  77/*
  78 * TCP RPC flags
  79 */
  80#define TCP_RPC_REPLY           (1UL << 6)
  81
  82#define XPRT_SOCK_CONNECTING    1U
  83
  84#endif /* __KERNEL__ */
  85
  86#endif /* _LINUX_SUNRPC_XPRTSOCK_H */
  87