LXR linux/include/linux/sunrpc/svcsock.h

   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 *, int bytes);
  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