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
  12 int             init_socket_xprt(void);
  13 void            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
  20 struct 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 */