1/*
2 * linux/include/linux/sunrpc/svcsock.h
3 *
4 * RPC server socket I/O.
5 *
6 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 */
8
9#ifndef SUNRPC_SVCSOCK_H
10#define SUNRPC_SVCSOCK_H
11
12#include <linux/sunrpc/svc.h>
13#include <linux/sunrpc/svc_xprt.h>
14
15/*
16 * RPC server socket.
17 */
18struct svc_sock {
19	struct svc_xprt		sk_xprt;
20	struct socket *		sk_sock;	/* berkeley socket layer */
21	struct sock *		sk_sk;		/* INET layer */
22
23	/* We keep the old state_change and data_ready CB's here */
24	void			(*sk_ostate)(struct sock *);
25	void			(*sk_odata)(struct sock *);
26	void			(*sk_owspace)(struct sock *);
27
28	/* private TCP part */
29	/* On-the-wire fragment header: */
30	__be32			sk_reclen;
31	/* As we receive a record, this includes the length received so
32	 * far (including the fragment header): */
33	u32			sk_tcplen;
34	/* Total length of the data (not including fragment headers)
35	 * received so far in the fragments making up this rpc: */
36	u32			sk_datalen;
37
38	struct page *		sk_pages[RPCSVC_MAXPAGES];	/* received data */
39};
40
41static inline u32 svc_sock_reclen(struct svc_sock *svsk)
42{
43	return ntohl(svsk->sk_reclen) & RPC_FRAGMENT_SIZE_MASK;
44}
45
46static inline u32 svc_sock_final_rec(struct svc_sock *svsk)
47{
48	return ntohl(svsk->sk_reclen) & RPC_LAST_STREAM_FRAGMENT;
49}
50
51/*
52 * Function prototypes.
53 */
54void		svc_close_net(struct svc_serv *, struct net *);
55int		svc_recv(struct svc_rqst *, long);
56int		svc_send(struct svc_rqst *);
57void		svc_drop(struct svc_rqst *);
58void		svc_sock_update_bufs(struct svc_serv *serv);
59bool		svc_alien_sock(struct net *net, int fd);
60int		svc_addsock(struct svc_serv *serv, const int fd,
61					char *name_return, const size_t len);
62void		svc_init_xprt_sock(void);
63void		svc_cleanup_xprt_sock(void);
64struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
65void		svc_sock_destroy(struct svc_xprt *);
66
67/*
68 * svc_makesock socket characteristics
69 */
70#define SVC_SOCK_DEFAULTS	(0U)
71#define SVC_SOCK_ANONYMOUS	(1U << 0)	/* don't register with pmap */
72#define SVC_SOCK_TEMPORARY	(1U << 1)	/* flag socket as temporary */
73
74#endif /* SUNRPC_SVCSOCK_H */
75