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/*
* NET An implementation of the SOCKET network access protocol.
* This is the master header file for the Linux NET layer,
* or, in plain English: the networking handling part of the
* kernel.
*
* Version: @(#)net.h 1.0.3 05/25/93
*
* Authors: Orest Zborowski, <obz@Kodak.COM>
* Ross Biro, <bir7@leland.Stanford.Edu>
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_NET_H
#define _LINUX_NET_H
#include <linux/wait.h>
#include <linux/socket.h>
#define NSOCKETS 2000 /* Dynamic, this is MAX LIMIT */
#define NSOCKETS_UNIX 128 /* unix domain static limit */
#define NPROTO 16 /* should be enough for now.. */
#define SYS_SOCKET 1 /* sys_socket(2) */
#define SYS_BIND 2 /* sys_bind(2) */
#define SYS_CONNECT 3 /* sys_connect(2) */
#define SYS_LISTEN 4 /* sys_listen(2) */
#define SYS_ACCEPT 5 /* sys_accept(2) */
#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
#define SYS_SEND 9 /* sys_send(2) */
#define SYS_RECV 10 /* sys_recv(2) */
#define SYS_SENDTO 11 /* sys_sendto(2) */
#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
typedef enum {
SS_FREE = 0, /* not allocated */
SS_UNCONNECTED, /* unconnected to any socket */
SS_CONNECTING, /* in process of connecting */
SS_CONNECTED, /* connected to socket */
SS_DISCONNECTING /* in process of disconnecting */
} socket_state;
#define SO_ACCEPTCON (1<<16) /* performed a listen */
#define SO_WAITDATA (1<<17) /* wait data to read */
#define SO_NOSPACE (1<<18) /* no space to write */
#ifdef __KERNEL__
/*
* Internal representation of a socket. not all the fields are used by
* all configurations:
*
* server client
* conn client connected to server connected to
* iconn list of clients -unused-
* awaiting connections
* wait sleep for clients, sleep for connection,
* sleep for i/o sleep for i/o
*/
struct socket {
short type; /* SOCK_STREAM, ... */
socket_state state;
long flags;
#ifdef _HURD_
int userflags; /* O_* */
int refcnt;
mach_port_t identity;
#endif
struct proto_ops *ops; /* protocols do most everything */
void *data; /* protocol data */
struct socket *conn; /* server socket connected to */
struct socket *iconn; /* incomplete client conn.s */
struct socket *next;
struct wait_queue **wait; /* ptr to place to wait on */
struct inode *inode;
struct fasync_struct *fasync_list; /* Asynchronous wake up list */
};
#define SOCK_INODE(S) ((S)->inode)
struct proto_ops {
int family;
int (*create) (struct socket *sock, int protocol);
int (*dup) (struct socket *newsock, struct socket *oldsock);
int (*release) (struct socket *sock, struct socket *peer);
int (*bind) (struct socket *sock, struct sockaddr *umyaddr,
int sockaddr_len);
int (*connect) (struct socket *sock, struct sockaddr *uservaddr,
int sockaddr_len, int flags);
int (*socketpair) (struct socket *sock1, struct socket *sock2);
int (*accept) (struct socket *sock, struct socket *newsock,
int flags);
int (*getname) (struct socket *sock, struct sockaddr *uaddr,
int *usockaddr_len, int peer);
int (*read) (struct socket *sock, char *ubuf, int size,
int nonblock);
int (*write) (struct socket *sock, char *ubuf, int size,
int nonblock);
int (*select) (struct socket *sock, int sel_type,
select_table *wait);
int (*ioctl) (struct socket *sock, unsigned int cmd,
unsigned long arg);
int (*listen) (struct socket *sock, int len);
int (*send) (struct socket *sock, void *buff, int len, int nonblock,
unsigned flags);
int (*recv) (struct socket *sock, void *buff, int len, int nonblock,
unsigned flags);
int (*sendto) (struct socket *sock, void *buff, int len, int nonblock,
unsigned flags, struct sockaddr *, int addr_len);
int (*recvfrom) (struct socket *sock, void *buff, int len, int nonblock,
unsigned flags, struct sockaddr *, int *addr_len);
int (*shutdown) (struct socket *sock, int flags);
int (*setsockopt) (struct socket *sock, int level, int optname,
char *optval, int optlen);
int (*getsockopt) (struct socket *sock, int level, int optname,
char *optval, int *optlen);
int (*fcntl) (struct socket *sock, unsigned int cmd,
unsigned long arg);
};
struct net_proto {
char *name; /* Protocol name */
void (*init_func)(struct net_proto *); /* Bootstrap */
};
extern int sock_awaitconn(struct socket *mysock, struct socket *servsock, int flags);
extern int sock_wake_async(struct socket *sock, int how);
extern int sock_register(int family, struct proto_ops *ops);
extern int sock_unregister(int family);
extern struct socket *sock_alloc(void);
extern void sock_release(struct socket *sock);
#endif /* __KERNEL__ */
#endif /* _LINUX_NET_H */
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