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
  11 #ifdef __KERNEL__
  12
  13 int             init_socket_xprt(void);
  14 void            cleanup_socket_xprt(void);
  15
  16 #define RPC_MIN_RESVPORT        (1U)
  17 #define RPC_MAX_RESVPORT        (65535U)
  18 #define RPC_DEF_MIN_RESVPORT    (665U)
  19 #define RPC_DEF_MAX_RESVPORT    (1023U)
  20
  21 struct sock_xprt {
  22         struct rpc_xprt         xprt;
  23
  24         /*
  25          * Network layer
  26          */
  27         struct socket *         sock;
  28         struct sock *           inet;
  29
  30         /*
  31          * State of TCP reply receive
  32          */
  33         __be32                  tcp_fraghdr,
  34                                 tcp_xid,
  35                                 tcp_calldir;
  36
  37         u32                     tcp_offset,
  38                                 tcp_reclen;
  39
  40         unsigned long           tcp_copied,
  41                                 tcp_flags;
  42
  43         /*
  44          * Connection of transports
  45          */
  46         unsigned long           sock_state;
  47         struct delayed_work     connect_worker;
  48         struct work_struct      recv_worker;
  49         struct mutex            recv_mutex;
  50         struct sockaddr_storage srcaddr;
  51         unsigned short          srcport;
  52
  53         /*
  54          * UDP socket buffer size parameters
  55          */
  56         size_t                  rcvsize,
  57                                 sndsize;
  58
  59         struct rpc_timeout      tcp_timeout;
  60
  61         /*
  62          * Saved socket callback addresses
  63          */
  64         void                    (*old_data_ready)(struct sock *);
  65         void                    (*old_state_change)(struct sock *);
  66         void                    (*old_write_space)(struct sock *);
  67         void                    (*old_error_report)(struct sock *);
  68 };
  69
  70 /*
  71  * TCP receive state flags
  72  */
  73 #define TCP_RCV_LAST_FRAG       (1UL << 0)
  74 #define TCP_RCV_COPY_FRAGHDR    (1UL << 1)
  75 #define TCP_RCV_COPY_XID        (1UL << 2)
  76 #define TCP_RCV_COPY_DATA       (1UL << 3)
  77 #define TCP_RCV_READ_CALLDIR    (1UL << 4)
  78 #define TCP_RCV_COPY_CALLDIR    (1UL << 5)
  79
  80 /*
  81  * TCP RPC flags
  82  */
  83 #define TCP_RPC_REPLY           (1UL << 6)
  84
  85 #define XPRT_SOCK_CONNECTING    1U
  86 #define XPRT_SOCK_DATA_READY    (2)
  87 #define XPRT_SOCK_UPD_TIMEOUT   (3)
  88
  89 #endif /* __KERNEL__ */
  90
  91 #endif /* _LINUX_SUNRPC_XPRTSOCK_H */