WebSVN - shark - Blame - Rev 1618 - /shark/branches/xen/drivers/linuxc26/include/linux/net.h

Rev	Author	Line No.	Line
422	giacomo	1	/*
		2	* NET An implementation of the SOCKET network access protocol.
		3	* This is the master header file for the Linux NET layer,
		4	* or, in plain English: the networking handling part of the
		5	* kernel.
		6	*
		7	* Version: @(#)net.h 1.0.3 05/25/93
		8	*
		9	* Authors: Orest Zborowski, <obz@Kodak.COM>
		10	* Ross Biro, <bir7@leland.Stanford.Edu>
		11	* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
		12	*
		13	* This program is free software; you can redistribute it and/or
		14	* modify it under the terms of the GNU General Public License
		15	* as published by the Free Software Foundation; either version
		16	* 2 of the License, or (at your option) any later version.
		17	*/
		18	#ifndef _LINUX_NET_H
		19	#define _LINUX_NET_H
		20
		21	#include <linux/config.h>
		22	#include <linux/wait.h>
		23	#include <linux/stringify.h>
		24
		25	struct poll_table_struct;
		26	struct inode;
		27
		28	#define NPROTO 32 /* should be enough for now.. */
		29
		30	#define SYS_SOCKET 1 /* sys_socket(2) */
		31	#define SYS_BIND 2 /* sys_bind(2) */
		32	#define SYS_CONNECT 3 /* sys_connect(2) */
		33	#define SYS_LISTEN 4 /* sys_listen(2) */
		34	#define SYS_ACCEPT 5 /* sys_accept(2) */
		35	#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
		36	#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
		37	#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
		38	#define SYS_SEND 9 /* sys_send(2) */
		39	#define SYS_RECV 10 /* sys_recv(2) */
		40	#define SYS_SENDTO 11 /* sys_sendto(2) */
		41	#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
		42	#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
		43	#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
		44	#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
		45	#define SYS_SENDMSG 16 /* sys_sendmsg(2) */
		46	#define SYS_RECVMSG 17 /* sys_recvmsg(2) */
		47
		48	typedef enum {
		49	SS_FREE = 0, /* not allocated */
		50	SS_UNCONNECTED, /* unconnected to any socket */
		51	SS_CONNECTING, /* in process of connecting */
		52	SS_CONNECTED, /* connected to socket */
		53	SS_DISCONNECTING /* in process of disconnecting */
		54	} socket_state;
		55
		56	#define __SO_ACCEPTCON (1 << 16) /* performed a listen */
		57
		58	#ifdef __KERNEL__
		59
		60	#define SOCK_ASYNC_NOSPACE 0
		61	#define SOCK_ASYNC_WAITDATA 1
		62	#define SOCK_NOSPACE 2
		63
		64	/**
		65	* struct socket - general BSD socket
		66	* @state - socket state (%SS_CONNECTED, etc)
		67	* @flags - socket flags (%SOCK_ASYNC_NOSPACE, etc)
		68	* @ops - protocol specific socket operations
		69	* @fasync_list - Asynchronous wake up list
		70	* @file - File back pointer for gc
		71	* @sk - internal networking protocol agnostic socket representation
		72	* @wait - wait queue for several uses
		73	* @type - socket type (%SOCK_STREAM, etc)
		74	* @passcred - credentials (used only in Unix Sockets (aka PF_LOCAL))
		75	*/
		76	struct socket {
		77	socket_state state;
		78	unsigned long flags;
		79	struct proto_ops *ops;
		80	struct fasync_struct *fasync_list;
		81	struct file *file;
		82	struct sock *sk;
		83	wait_queue_head_t wait;
		84	short type;
		85	unsigned char passcred;
		86	};
		87
		88	struct vm_area_struct;
		89	struct page;
		90	struct kiocb;
		91	struct sockaddr;
		92	struct msghdr;
		93	struct module;
		94
		95	struct proto_ops {
		96	int family;
		97	struct module *owner;
		98	int (release) (struct socket sock);
		99	int (bind) (struct socket sock,
		100	struct sockaddr *myaddr,
		101	int sockaddr_len);
		102	int (connect) (struct socket sock,
		103	struct sockaddr *vaddr,
		104	int sockaddr_len, int flags);
		105	int (socketpair)(struct socket sock1,
		106	struct socket *sock2);
		107	int (accept) (struct socket sock,
		108	struct socket *newsock, int flags);
		109	int (getname) (struct socket sock,
		110	struct sockaddr *addr,
		111	int *sockaddr_len, int peer);
		112	unsigned int (poll) (struct file file, struct socket *sock,
		113	struct poll_table_struct *wait);
		114	int (ioctl) (struct socket sock, unsigned int cmd,
		115	unsigned long arg);
		116	int (listen) (struct socket sock, int len);
		117	int (shutdown) (struct socket sock, int flags);
		118	int (setsockopt)(struct socket sock, int level,
		119	int optname, char __user *optval, int optlen);
		120	int (getsockopt)(struct socket sock, int level,
		121	int optname, char __user optval, int __user optlen);
		122	int (sendmsg) (struct kiocb iocb, struct socket *sock,
		123	struct msghdr *m, int total_len);
		124	int (recvmsg) (struct kiocb iocb, struct socket *sock,
		125	struct msghdr *m, int total_len,
		126	int flags);
		127	int (mmap) (struct file file, struct socket *sock,
		128	struct vm_area_struct * vma);
		129	ssize_t (sendpage) (struct socket sock, struct page *page,
		130	int offset, size_t size, int flags);
		131	};
		132
		133	struct net_proto_family {
		134	int family;
		135	int (create)(struct socket sock, int protocol);
		136	/* These are counters for the number of different methods of
		137	each we support */
		138	short authentication;
		139	short encryption;
		140	short encrypt_net;
		141	struct module *owner;
		142	};
		143
		144	struct iovec;
		145
		146	extern int sock_wake_async(struct socket *sk, int how, int band);
		147	extern int sock_register(struct net_proto_family *fam);
		148	extern int sock_unregister(int family);
		149	extern struct socket *sock_alloc(void);
		150	extern int sock_create(int family, int type, int proto,
		151	struct socket **res);
		152	extern void sock_release(struct socket *sock);
		153	extern int sock_sendmsg(struct socket sock, struct msghdr msg,
		154	int len);
		155	extern int sock_recvmsg(struct socket sock, struct msghdr msg,
		156	int size, int flags);
		157	extern int sock_readv_writev(int type, struct inode *inode,
		158	struct file *file,
		159	const struct iovec *iov, long count,
		160	long size);
		161	extern int sock_map_fd(struct socket *sock);
		162	extern struct socket sockfd_lookup(int fd, int err);
		163	#define sockfd_put(sock) fput(sock->file)
		164	extern int net_ratelimit(void);
		165	extern unsigned long net_random(void);
		166	extern void net_srandom(unsigned long);
		167
		168	#ifndef CONFIG_SMP
		169	#define SOCKOPS_WRAPPED(name) name
		170	#define SOCKOPS_WRAP(name, fam)
		171	#else
		172
		173	#define SOCKOPS_WRAPPED(name) __unlocked_##name
		174
		175	#define SOCKCALL_WRAP(name, call, parms, args) \
		176	static int __lock_##name##_##call parms \
		177	{ \
		178	int ret; \
		179	lock_kernel(); \
		180	ret = __unlocked_##name##_ops.call args ;\
		181	unlock_kernel(); \
		182	return ret; \
		183	}
		184
		185	#define SOCKCALL_UWRAP(name, call, parms, args) \
		186	static unsigned int __lock_##name##_##call parms \
		187	{ \
		188	int ret; \
		189	lock_kernel(); \
		190	ret = __unlocked_##name##_ops.call args ;\
		191	unlock_kernel(); \
		192	return ret; \
		193	}
		194
		195
		196	#define SOCKOPS_WRAP(name, fam) \
		197	SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
		198	SOCKCALL_WRAP(name, bind, (struct socket sock, struct sockaddr uaddr, int addr_len), \
		199	(sock, uaddr, addr_len)) \
		200	SOCKCALL_WRAP(name, connect, (struct socket sock, struct sockaddr uaddr, \
		201	int addr_len, int flags), \
		202	(sock, uaddr, addr_len, flags)) \
		203	SOCKCALL_WRAP(name, socketpair, (struct socket sock1, struct socket sock2), \
		204	(sock1, sock2)) \
		205	SOCKCALL_WRAP(name, accept, (struct socket sock, struct socket newsock, \
		206	int flags), (sock, newsock, flags)) \
		207	SOCKCALL_WRAP(name, getname, (struct socket sock, struct sockaddr uaddr, \
		208	int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
		209	SOCKCALL_UWRAP(name, poll, (struct file file, struct socket sock, struct poll_table_struct *wait), \
		210	(file, sock, wait)) \
		211	SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
		212	unsigned long arg), (sock, cmd, arg)) \
		213	SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
		214	SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
		215	SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
		216	char *optval, int optlen), (sock, level, optname, optval, optlen)) \
		217	SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
		218	char optval, int optlen), (sock, level, optname, optval, optlen)) \
		219	SOCKCALL_WRAP(name, sendmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, int len), \
		220	(iocb, sock, m, len)) \
		221	SOCKCALL_WRAP(name, recvmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, int len, int flags), \
		222	(iocb, sock, m, len, flags)) \
		223	SOCKCALL_WRAP(name, mmap, (struct file file, struct socket sock, struct vm_area_struct *vma), \
		224	(file, sock, vma)) \
		225	\
		226	static struct proto_ops name##_ops = { \
		227	.family = fam, \
		228	.owner = THIS_MODULE, \
		229	.release = __lock_##name##_release, \
		230	.bind = __lock_##name##_bind, \
		231	.connect = __lock_##name##_connect, \
		232	.socketpair = __lock_##name##_socketpair, \
		233	.accept = __lock_##name##_accept, \
		234	.getname = __lock_##name##_getname, \
		235	.poll = __lock_##name##_poll, \
		236	.ioctl = __lock_##name##_ioctl, \
		237	.listen = __lock_##name##_listen, \
		238	.shutdown = __lock_##name##_shutdown, \
		239	.setsockopt = __lock_##name##_setsockopt, \
		240	.getsockopt = __lock_##name##_getsockopt, \
		241	.sendmsg = __lock_##name##_sendmsg, \
		242	.recvmsg = __lock_##name##_recvmsg, \
		243	.mmap = __lock_##name##_mmap, \
		244	};
		245	#endif
		246
		247	#define MODULE_ALIAS_NETPROTO(proto) \
		248	MODULE_ALIAS("net-pf-" __stringify(proto))
		249
		250	#endif /* __KERNEL__ */
		251	#endif /* _LINUX_NET_H */

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