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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
14/*
15 * RPC server socket.
16 */
17struct svc_sock {
18 struct list_head sk_ready; /* list of ready sockets */
19 struct list_head sk_list; /* list of all sockets */
20 struct socket * sk_sock; /* berkeley socket layer */
21 struct sock * sk_sk; /* INET layer */
22
23 struct svc_pool * sk_pool; /* current pool iff queued */
24 struct svc_serv * sk_server; /* service for this socket */
25 atomic_t sk_inuse; /* use count */
26 unsigned long sk_flags;
27#define SK_BUSY 0 /* enqueued/receiving */
28#define SK_CONN 1 /* conn pending */
29#define SK_CLOSE 2 /* dead or dying */
30#define SK_DATA 3 /* data pending */
31#define SK_TEMP 4 /* temp (TCP) socket */
32#define SK_DEAD 6 /* socket closed */
33#define SK_CHNGBUF 7 /* need to change snd/rcv buffer sizes */
34#define SK_DEFERRED 8 /* request on sk_deferred */
35#define SK_OLD 9 /* used for temp socket aging mark+sweep */
36#define SK_DETACHED 10 /* detached from tempsocks list */
37
38 atomic_t sk_reserved; /* space on outq that is reserved */
39
40 spinlock_t sk_defer_lock; /* protects sk_deferred */
41 struct list_head sk_deferred; /* deferred requests that need to
42 * be revisted */
43 struct mutex sk_mutex; /* to serialize sending data */
44
45 int (*sk_recvfrom)(struct svc_rqst *rqstp);
46 int (*sk_sendto)(struct svc_rqst *rqstp);
47
48 /* We keep the old state_change and data_ready CB's here */
49 void (*sk_ostate)(struct sock *);
50 void (*sk_odata)(struct sock *, int bytes);
51 void (*sk_owspace)(struct sock *);
52
53 /* private TCP part */
54 int sk_reclen; /* length of record */
55 int sk_tcplen; /* current read length */
56 time_t sk_lastrecv; /* time of last received request */
57
58 /* cache of various info for TCP sockets */
59 void *sk_info_authunix;
60
61 struct sockaddr_storage sk_remote; /* remote peer's address */
62 int sk_remotelen; /* length of address */
63};
64
65/*
66 * Function prototypes.
67 */
68int svc_makesock(struct svc_serv *, int, unsigned short, int flags);
69void svc_force_close_socket(struct svc_sock *);
70int svc_recv(struct svc_rqst *, long);
71int svc_send(struct svc_rqst *);
72void svc_drop(struct svc_rqst *);
73void svc_sock_update_bufs(struct svc_serv *serv);
74int svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
75int svc_addsock(struct svc_serv *serv,
76 int fd,
77 char *name_return,
78 int *proto);
79
80/*
81 * svc_makesock socket characteristics
82 */
83#define SVC_SOCK_DEFAULTS (0U)
84#define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */
85#define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */
86
87#endif /* SUNRPC_SVCSOCK_H */