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  */
  18 struct 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
  41 static inline u32 svc_sock_reclen(struct svc_sock *svsk)
  42 {
  43         return ntohl(svsk->sk_reclen) & RPC_FRAGMENT_SIZE_MASK;
  44 }
  45
  46 static 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  */
  54 void            svc_close_net(struct svc_serv *, struct net *);
  55 int             svc_recv(struct svc_rqst *, long);
  56 int             svc_send(struct svc_rqst *);
  57 void            svc_drop(struct svc_rqst *);
  58 void            svc_sock_update_bufs(struct svc_serv *serv);
  59 int             svc_addsock(struct svc_serv *serv, const int fd,
  60                                         char *name_return, const size_t len);
  61 void            svc_init_xprt_sock(void);
  62 void            svc_cleanup_xprt_sock(void);
  63 struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
  64 void            svc_sock_destroy(struct svc_xprt *);
  65
  66 /*
  67  * svc_makesock socket characteristics
  68  */
  69 #define SVC_SOCK_DEFAULTS       (0U)
  70 #define SVC_SOCK_ANONYMOUS      (1U << 0)       /* don't register with pmap */
  71 #define SVC_SOCK_TEMPORARY      (1U << 1)       /* flag socket as temporary */
  72
  73 #endif /* SUNRPC_SVCSOCK_H */