/* * 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	128		/* should be dynamic, later...	*/#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		*//* * Internel 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;  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;};#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);	};extern int	sock_awaitconn(struct socket *mysock, struct socket *servsock);extern int	sock_register(int family, struct proto_ops *ops);#endif	/* _LINUX_NET_H */