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