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 unsigned 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
  20 struct 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 */