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/* SPDX-License-Identifier: GPL-2.0 */
/*
* linux/include/linux/sunrpc/svcsock.h
*
* RPC server socket I/O.
*
* Copyright (C) 1995, 1996 Olaf Kirch <[email protected]>
*/
#ifndef SUNRPC_SVCSOCK_H
#define SUNRPC_SVCSOCK_H
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svc_xprt.h>
/*
* RPC server socket.
*/
struct svc_sock {
struct svc_xprt sk_xprt;
struct socket * sk_sock; /* berkeley socket layer */
struct sock * sk_sk; /* INET layer */
/* We keep the old state_change and data_ready CB's here */
void (*sk_ostate)(struct sock *);
void (*sk_odata)(struct sock *);
void (*sk_owspace)(struct sock *);
/* private TCP part */
/* On-the-wire fragment header: */
__be32 sk_marker;
/* As we receive a record, this includes the length received so
* far (including the fragment header): */
u32 sk_tcplen;
/* Total length of the data (not including fragment headers)
* received so far in the fragments making up this rpc: */
u32 sk_datalen;
/* Number of queued send requests */
atomic_t sk_sendqlen;
struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */
};
static inline u32 svc_sock_reclen(struct svc_sock *svsk)
{
return be32_to_cpu(svsk->sk_marker) & RPC_FRAGMENT_SIZE_MASK;
}
static inline u32 svc_sock_final_rec(struct svc_sock *svsk)
{
return be32_to_cpu(svsk->sk_marker) & RPC_LAST_STREAM_FRAGMENT;
}
/*
* Function prototypes.
*/
void svc_close_net(struct svc_serv *, struct net *);
int svc_recv(struct svc_rqst *, long);
int svc_send(struct svc_rqst *);
void svc_drop(struct svc_rqst *);
void svc_sock_update_bufs(struct svc_serv *serv);
int svc_addsock(struct svc_serv *serv, struct net *net,
const int fd, char *name_return, const size_t len,
const struct cred *cred);
void svc_init_xprt_sock(void);
void svc_cleanup_xprt_sock(void);
struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
void svc_sock_destroy(struct svc_xprt *);
/*
* svc_makesock socket characteristics
*/
#define SVC_SOCK_DEFAULTS (0U)
#define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */
#define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */
#endif /* SUNRPC_SVCSOCK_H */