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Linux kernel mirror (for testing)
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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
11int init_socket_xprt(void);
12void cleanup_socket_xprt(void);
13unsigned 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
20struct 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 */