[deliverable/linux.git] / include / linux / net.h

/*
 * 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
 *		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>
#include <asm/socket.h>

struct poll_table_struct;
struct pipe_inode_info;
struct inode;
struct net;

#define NPROTO		AF_MAX

#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)		*/
#define SYS_SENDMSG	16		/* sys_sendmsg(2)		*/
#define SYS_RECVMSG	17		/* sys_recvmsg(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		*/

#ifdef __KERNEL__
#include <linux/stringify.h>
#include <linux/random.h>

#define SOCK_ASYNC_NOSPACE	0
#define SOCK_ASYNC_WAITDATA	1
#define SOCK_NOSPACE		2
#define SOCK_PASSCRED		3
#define SOCK_PASSSEC		4

#ifndef ARCH_HAS_SOCKET_TYPES
/**
 * enum sock_type - Socket types
 * @SOCK_STREAM: stream (connection) socket
 * @SOCK_DGRAM: datagram (conn.less) socket
 * @SOCK_RAW: raw socket
 * @SOCK_RDM: reliably-delivered message
 * @SOCK_SEQPACKET: sequential packet socket
 * @SOCK_DCCP: Datagram Congestion Control Protocol socket
 * @SOCK_PACKET: linux specific way of getting packets at the dev level.
 *		  For writing rarp and other similar things on the user level.
 *
 * When adding some new socket type please
 * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
 * overrides this enum for binary compat reasons.
 */
enum sock_type {
	SOCK_STREAM	= 1,
	SOCK_DGRAM	= 2,
	SOCK_RAW	= 3,
	SOCK_RDM	= 4,
	SOCK_SEQPACKET	= 5,
	SOCK_DCCP	= 6,
	SOCK_PACKET	= 10,
};

#define SOCK_MAX (SOCK_PACKET + 1)

#endif /* ARCH_HAS_SOCKET_TYPES */

enum sock_shutdown_cmd {
	SHUT_RD		= 0,
	SHUT_WR		= 1,
	SHUT_RDWR	= 2,
};

/**
 *  struct socket - general BSD socket
 *  @state: socket state (%SS_CONNECTED, etc)
 *  @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
 *  @ops: protocol specific socket operations
 *  @fasync_list: Asynchronous wake up list
 *  @file: File back pointer for gc
 *  @sk: internal networking protocol agnostic socket representation
 *  @wait: wait queue for several uses
 *  @type: socket type (%SOCK_STREAM, etc)
 */
struct socket {
	socket_state		state;
	unsigned long		flags;
	const struct proto_ops	*ops;
	struct fasync_struct	*fasync_list;
	struct file		*file;
	struct sock		*sk;
	wait_queue_head_t	wait;
	short			type;
};

struct vm_area_struct;
struct page;
struct kiocb;
struct sockaddr;
struct msghdr;
struct module;

struct proto_ops {
	int		family;
	struct module	*owner;
	int		(*release)   (struct socket *sock);
	int		(*bind)	     (struct socket *sock,
				      struct sockaddr *myaddr,
				      int sockaddr_len);
	int		(*connect)   (struct socket *sock,
				      struct sockaddr *vaddr,
				      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 *addr,
				      int *sockaddr_len, int peer);
	unsigned int	(*poll)	     (struct file *file, struct socket *sock,
				      struct poll_table_struct *wait);
	int		(*ioctl)     (struct socket *sock, unsigned int cmd,
				      unsigned long arg);
	int	 	(*compat_ioctl) (struct socket *sock, unsigned int cmd,
				      unsigned long arg);
	int		(*listen)    (struct socket *sock, int len);
	int		(*shutdown)  (struct socket *sock, int flags);
	int		(*setsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int optlen);
	int		(*getsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int __user *optlen);
	int		(*compat_setsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int optlen);
	int		(*compat_getsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int __user *optlen);
	int		(*sendmsg)   (struct kiocb *iocb, struct socket *sock,
				      struct msghdr *m, size_t total_len);
	int		(*recvmsg)   (struct kiocb *iocb, struct socket *sock,
				      struct msghdr *m, size_t total_len,
				      int flags);
	int		(*mmap)	     (struct file *file, struct socket *sock,
				      struct vm_area_struct * vma);
	ssize_t		(*sendpage)  (struct socket *sock, struct page *page,
				      int offset, size_t size, int flags);
	ssize_t 	(*splice_read)(struct socket *sock,  loff_t *ppos,
				       struct pipe_inode_info *pipe, size_t len, unsigned int flags);
};

struct net_proto_family {
	int		family;
	int		(*create)(struct net *net, struct socket *sock, int protocol);
	struct module	*owner;
};

struct iovec;
struct kvec;

enum {
	SOCK_WAKE_IO,
	SOCK_WAKE_WAITD,
	SOCK_WAKE_SPACE,
	SOCK_WAKE_URG,
};

extern int	     sock_wake_async(struct socket *sk, int how, int band);
extern int	     sock_register(const struct net_proto_family *fam);
extern void	     sock_unregister(int family);
extern int	     sock_create(int family, int type, int proto,
				 struct socket **res);
extern int	     sock_create_kern(int family, int type, int proto,
				      struct socket **res);
extern int	     sock_create_lite(int family, int type, int proto,
				      struct socket **res); 
extern void	     sock_release(struct socket *sock);
extern int   	     sock_sendmsg(struct socket *sock, struct msghdr *msg,
				  size_t len);
extern int	     sock_recvmsg(struct socket *sock, struct msghdr *msg,
				  size_t size, int flags);
extern int 	     sock_map_fd(struct socket *sock);
extern struct socket *sockfd_lookup(int fd, int *err);
#define		     sockfd_put(sock) fput(sock->file)
extern int	     net_ratelimit(void);

#define net_random()		random32()
#define net_srandom(seed)	srandom32((__force u32)seed)

extern int   	     kernel_sendmsg(struct socket *sock, struct msghdr *msg,
				    struct kvec *vec, size_t num, size_t len);
extern int   	     kernel_recvmsg(struct socket *sock, struct msghdr *msg,
				    struct kvec *vec, size_t num,
				    size_t len, int flags);

extern int kernel_bind(struct socket *sock, struct sockaddr *addr,
		       int addrlen);
extern int kernel_listen(struct socket *sock, int backlog);
extern int kernel_accept(struct socket *sock, struct socket **newsock,
			 int flags);
extern int kernel_connect(struct socket *sock, struct sockaddr *addr,
			  int addrlen, int flags);
extern int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
			      int *addrlen);
extern int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
			      int *addrlen);
extern int kernel_getsockopt(struct socket *sock, int level, int optname,
			     char *optval, int *optlen);
extern int kernel_setsockopt(struct socket *sock, int level, int optname,
			     char *optval, int optlen);
extern int kernel_sendpage(struct socket *sock, struct page *page, int offset,
			   size_t size, int flags);
extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
extern int kernel_sock_shutdown(struct socket *sock,
				enum sock_shutdown_cmd how);

#ifndef CONFIG_SMP
#define SOCKOPS_WRAPPED(name) name
#define SOCKOPS_WRAP(name, fam)
#else

#define SOCKOPS_WRAPPED(name) __unlocked_##name

#define SOCKCALL_WRAP(name, call, parms, args)		\
static int __lock_##name##_##call  parms		\
{							\
	int ret;					\
	lock_kernel();					\
	ret = __unlocked_##name##_ops.call  args ;\
	unlock_kernel();				\
	return ret;					\
}

#define SOCKCALL_UWRAP(name, call, parms, args)		\
static unsigned int __lock_##name##_##call  parms	\
{							\
	int ret;					\
	lock_kernel();					\
	ret = __unlocked_##name##_ops.call  args ;\
	unlock_kernel();				\
	return ret;					\
}


#define SOCKOPS_WRAP(name, fam)					\
SOCKCALL_WRAP(name, release, (struct socket *sock), (sock))	\
SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \
	      (sock, uaddr, addr_len))				\
SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \
			      int addr_len, int flags), 	\
	      (sock, uaddr, addr_len, flags))			\
SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \
	      (sock1, sock2))					\
SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \
			 int flags), (sock, newsock, flags)) \
SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \
			 int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \
	      (file, sock, wait)) \
SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
			 unsigned long arg), (sock, cmd, arg)) \
SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \
			 unsigned long arg), (sock, cmd, arg)) \
SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
			 char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
			 char __user *optval, int __user *optlen), (sock, level, optname, optval, optlen)) \
SOCKCALL_WRAP(name, sendmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len), \
	      (iocb, sock, m, len)) \
SOCKCALL_WRAP(name, recvmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags), \
	      (iocb, sock, m, len, flags)) \
SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \
	      (file, sock, vma)) \
	      \
static const struct proto_ops name##_ops = {			\
	.family		= fam,				\
	.owner		= THIS_MODULE,			\
	.release	= __lock_##name##_release,	\
	.bind		= __lock_##name##_bind,		\
	.connect	= __lock_##name##_connect,	\
	.socketpair	= __lock_##name##_socketpair,	\
	.accept		= __lock_##name##_accept,	\
	.getname	= __lock_##name##_getname,	\
	.poll		= __lock_##name##_poll,		\
	.ioctl		= __lock_##name##_ioctl,	\
	.compat_ioctl	= __lock_##name##_compat_ioctl,	\
	.listen		= __lock_##name##_listen,	\
	.shutdown	= __lock_##name##_shutdown,	\
	.setsockopt	= __lock_##name##_setsockopt,	\
	.getsockopt	= __lock_##name##_getsockopt,	\
	.sendmsg	= __lock_##name##_sendmsg,	\
	.recvmsg	= __lock_##name##_recvmsg,	\
	.mmap		= __lock_##name##_mmap,		\
};

#endif

#define MODULE_ALIAS_NETPROTO(proto) \
	MODULE_ALIAS("net-pf-" __stringify(proto))

#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))

#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
		     "-type-" __stringify(type))

#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
extern int net_msg_cost;
extern int net_msg_burst;
#endif

#endif /* __KERNEL__ */
#endif	/* _LINUX_NET_H */
Commit	Line	Data
1da177e4 LT	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>
02c30a84	10	* Ross Biro
1da177e4 LT	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
1da177e4	21	#include <linux/wait.h>
0098b727	22	#include <linux/socket.h>
1da177e4 LT	23	#include <asm/socket.h>
	24
	25	struct poll_table_struct;
9c55e01c	26	struct pipe_inode_info;
1da177e4	27	struct inode;
1b8d7ae4	28	struct net;
1da177e4	29
0098b727	30	#define NPROTO AF_MAX
1da177e4 LT	31
	32	#define SYS_SOCKET 1 /* sys_socket(2) */
	33	#define SYS_BIND 2 /* sys_bind(2) */
	34	#define SYS_CONNECT 3 /* sys_connect(2) */
	35	#define SYS_LISTEN 4 /* sys_listen(2) */
	36	#define SYS_ACCEPT 5 /* sys_accept(2) */
	37	#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
	38	#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
	39	#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
	40	#define SYS_SEND 9 /* sys_send(2) */
	41	#define SYS_RECV 10 /* sys_recv(2) */
	42	#define SYS_SENDTO 11 /* sys_sendto(2) */
	43	#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
	44	#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
	45	#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
	46	#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
	47	#define SYS_SENDMSG 16 /* sys_sendmsg(2) */
	48	#define SYS_RECVMSG 17 /* sys_recvmsg(2) */
	49
	50	typedef enum {
	51	SS_FREE = 0, /* not allocated */
	52	SS_UNCONNECTED, /* unconnected to any socket */
	53	SS_CONNECTING, /* in process of connecting */
	54	SS_CONNECTED, /* connected to socket */
	55	SS_DISCONNECTING /* in process of disconnecting */
	56	} socket_state;
	57
	58	#define __SO_ACCEPTCON (1 << 16) /* performed a listen */
	59
	60	#ifdef __KERNEL__
eacf17bd	61	#include <linux/stringify.h>
cb4db4c2	62	#include <linux/random.h>
1da177e4 LT	63
	64	#define SOCK_ASYNC_NOSPACE 0
	65	#define SOCK_ASYNC_WAITDATA 1
	66	#define SOCK_NOSPACE 2
	67	#define SOCK_PASSCRED 3
877ce7c1	68	#define SOCK_PASSSEC 4
1da177e4 LT	69
1da177e4 LT	70	#ifndef ARCH_HAS_SOCKET_TYPES
4dc3b16b PP	71	/**
	72	* enum sock_type - Socket types
	73	* @SOCK_STREAM: stream (connection) socket
	74	* @SOCK_DGRAM: datagram (conn.less) socket
	75	* @SOCK_RAW: raw socket
	76	* @SOCK_RDM: reliably-delivered message
	77	* @SOCK_SEQPACKET: sequential packet socket
8f2709b5	78	* @SOCK_DCCP: Datagram Congestion Control Protocol socket
4dc3b16b PP	79	* @SOCK_PACKET: linux specific way of getting packets at the dev level.
	80	* For writing rarp and other similar things on the user level.
	81	*
1da177e4 LT	82	* When adding some new socket type please
	83	* grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
	84	* overrides this enum for binary compat reasons.
1da177e4 LT	85	*/
	86	enum sock_type {
	87	SOCK_STREAM = 1,
	88	SOCK_DGRAM = 2,
	89	SOCK_RAW = 3,
	90	SOCK_RDM = 4,
	91	SOCK_SEQPACKET = 5,
7c657876	92	SOCK_DCCP = 6,
1da177e4 LT	93	SOCK_PACKET = 10,
	94	};
	95
	96	#define SOCK_MAX (SOCK_PACKET + 1)
	97
	98	#endif /* ARCH_HAS_SOCKET_TYPES */
	99
91cf45f0 TM	100	enum sock_shutdown_cmd {
	101	SHUT_RD = 0,
	102	SHUT_WR = 1,
	103	SHUT_RDWR = 2,
	104	};
	105
1da177e4 LT	106	/**
1da177e4 LT	107	* struct socket - general BSD socket
4dc3b16b PP	108	* @state: socket state (%SS_CONNECTED, etc)
	109	* @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
	110	* @ops: protocol specific socket operations
	111	* @fasync_list: Asynchronous wake up list
	112	* @file: File back pointer for gc
	113	* @sk: internal networking protocol agnostic socket representation
	114	* @wait: wait queue for several uses
	115	* @type: socket type (%SOCK_STREAM, etc)
1da177e4 LT	116	*/
	117	struct socket {
	118	socket_state state;
	119	unsigned long flags;
90ddc4f0	120	const struct proto_ops *ops;
1da177e4 LT	121	struct fasync_struct *fasync_list;
	122	struct file *file;
	123	struct sock *sk;
	124	wait_queue_head_t wait;
	125	short type;
	126	};
	127
	128	struct vm_area_struct;
	129	struct page;
	130	struct kiocb;
	131	struct sockaddr;
	132	struct msghdr;
	133	struct module;
	134
	135	struct proto_ops {
	136	int family;
	137	struct module *owner;
	138	int (release) (struct socket sock);
	139	int (bind) (struct socket sock,
	140	struct sockaddr *myaddr,
	141	int sockaddr_len);
	142	int (connect) (struct socket sock,
	143	struct sockaddr *vaddr,
	144	int sockaddr_len, int flags);
	145	int (socketpair)(struct socket sock1,
	146	struct socket *sock2);
	147	int (accept) (struct socket sock,
	148	struct socket *newsock, int flags);
	149	int (getname) (struct socket sock,
	150	struct sockaddr *addr,
	151	int *sockaddr_len, int peer);
	152	unsigned int (poll) (struct file file, struct socket *sock,
	153	struct poll_table_struct *wait);
	154	int (ioctl) (struct socket sock, unsigned int cmd,
	155	unsigned long arg);
89bbfc95 SP	156	int (compat_ioctl) (struct socket sock, unsigned int cmd,
89bbfc95 SP	157	unsigned long arg);
1da177e4 LT	158	int (listen) (struct socket sock, int len);
	159	int (shutdown) (struct socket sock, int flags);
	160	int (setsockopt)(struct socket sock, int level,
	161	int optname, char __user *optval, int optlen);
	162	int (getsockopt)(struct socket sock, int level,
	163	int optname, char __user optval, int __user optlen);
3fdadf7d DM	164	int (compat_setsockopt)(struct socket sock, int level,
	165	int optname, char __user *optval, int optlen);
	166	int (compat_getsockopt)(struct socket sock, int level,
	167	int optname, char __user optval, int __user optlen);
1da177e4 LT	168	int (sendmsg) (struct kiocb iocb, struct socket *sock,
	169	struct msghdr *m, size_t total_len);
	170	int (recvmsg) (struct kiocb iocb, struct socket *sock,
	171	struct msghdr *m, size_t total_len,
	172	int flags);
	173	int (mmap) (struct file file, struct socket *sock,
	174	struct vm_area_struct * vma);
	175	ssize_t (sendpage) (struct socket sock, struct page *page,
	176	int offset, size_t size, int flags);
9c55e01c JA	177	ssize_t (splice_read)(struct socket sock, loff_t *ppos,
9c55e01c JA	178	struct pipe_inode_info *pipe, size_t len, unsigned int flags);
1da177e4 LT	179	};
	180
	181	struct net_proto_family {
	182	int family;
1b8d7ae4	183	int (create)(struct net net, struct socket *sock, int protocol);
1da177e4 LT	184	struct module *owner;
	185	};
	186
	187	struct iovec;
	188	struct kvec;
	189
8d8ad9d7 PE	190	enum {
	191	SOCK_WAKE_IO,
	192	SOCK_WAKE_WAITD,
	193	SOCK_WAKE_SPACE,
	194	SOCK_WAKE_URG,
	195	};
	196
1da177e4	197	extern int sock_wake_async(struct socket *sk, int how, int band);
f0fd27d4 SH	198	extern int sock_register(const struct net_proto_family *fam);
f0fd27d4 SH	199	extern void sock_unregister(int family);
1da177e4 LT	200	extern int sock_create(int family, int type, int proto,
	201	struct socket **res);
	202	extern int sock_create_kern(int family, int type, int proto,
	203	struct socket **res);
	204	extern int sock_create_lite(int family, int type, int proto,
	205	struct socket **res);
	206	extern void sock_release(struct socket *sock);
	207	extern int sock_sendmsg(struct socket sock, struct msghdr msg,
	208	size_t len);
	209	extern int sock_recvmsg(struct socket sock, struct msghdr msg,
	210	size_t size, int flags);
	211	extern int sock_map_fd(struct socket *sock);
	212	extern struct socket sockfd_lookup(int fd, int err);
	213	#define sockfd_put(sock) fput(sock->file)
	214	extern int net_ratelimit(void);
aaa248f6 SH	215
aaa248f6 SH	216	#define net_random() random32()
a64b78a0	217	#define net_srandom(seed) srandom32((__force u32)seed)
1da177e4 LT	218
	219	extern int kernel_sendmsg(struct socket sock, struct msghdr msg,
	220	struct kvec *vec, size_t num, size_t len);
	221	extern int kernel_recvmsg(struct socket sock, struct msghdr msg,
	222	struct kvec *vec, size_t num,
	223	size_t len, int flags);
	224
ac5a488e SS	225	extern int kernel_bind(struct socket sock, struct sockaddr addr,
	226	int addrlen);
	227	extern int kernel_listen(struct socket *sock, int backlog);
	228	extern int kernel_accept(struct socket sock, struct socket *newsock,
	229	int flags);
	230	extern int kernel_connect(struct socket sock, struct sockaddr addr,
	231	int addrlen, int flags);
	232	extern int kernel_getsockname(struct socket sock, struct sockaddr addr,
	233	int *addrlen);
	234	extern int kernel_getpeername(struct socket sock, struct sockaddr addr,
	235	int *addrlen);
	236	extern int kernel_getsockopt(struct socket *sock, int level, int optname,
	237	char optval, int optlen);
	238	extern int kernel_setsockopt(struct socket *sock, int level, int optname,
	239	char *optval, int optlen);
	240	extern int kernel_sendpage(struct socket sock, struct page page, int offset,
	241	size_t size, int flags);
	242	extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
91cf45f0 TM	243	extern int kernel_sock_shutdown(struct socket *sock,
91cf45f0 TM	244	enum sock_shutdown_cmd how);
ac5a488e	245
1da177e4 LT	246	#ifndef CONFIG_SMP
	247	#define SOCKOPS_WRAPPED(name) name
	248	#define SOCKOPS_WRAP(name, fam)
	249	#else
	250
	251	#define SOCKOPS_WRAPPED(name) __unlocked_##name
	252
	253	#define SOCKCALL_WRAP(name, call, parms, args) \
	254	static int __lock_##name##_##call parms \
	255	{ \
	256	int ret; \
	257	lock_kernel(); \
	258	ret = __unlocked_##name##_ops.call args ;\
	259	unlock_kernel(); \
	260	return ret; \
	261	}
	262
	263	#define SOCKCALL_UWRAP(name, call, parms, args) \
	264	static unsigned int __lock_##name##_##call parms \
	265	{ \
	266	int ret; \
	267	lock_kernel(); \
	268	ret = __unlocked_##name##_ops.call args ;\
	269	unlock_kernel(); \
	270	return ret; \
	271	}
	272
	273
	274	#define SOCKOPS_WRAP(name, fam) \
	275	SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
	276	SOCKCALL_WRAP(name, bind, (struct socket sock, struct sockaddr uaddr, int addr_len), \
	277	(sock, uaddr, addr_len)) \
	278	SOCKCALL_WRAP(name, connect, (struct socket sock, struct sockaddr uaddr, \
	279	int addr_len, int flags), \
	280	(sock, uaddr, addr_len, flags)) \
	281	SOCKCALL_WRAP(name, socketpair, (struct socket sock1, struct socket sock2), \
	282	(sock1, sock2)) \
	283	SOCKCALL_WRAP(name, accept, (struct socket sock, struct socket newsock, \
	284	int flags), (sock, newsock, flags)) \
	285	SOCKCALL_WRAP(name, getname, (struct socket sock, struct sockaddr uaddr, \
	286	int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
	287	SOCKCALL_UWRAP(name, poll, (struct file file, struct socket sock, struct poll_table_struct *wait), \
	288	(file, sock, wait)) \
	289	SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
	290	unsigned long arg), (sock, cmd, arg)) \
89bbfc95 SP	291	SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \
89bbfc95 SP	292	unsigned long arg), (sock, cmd, arg)) \
1da177e4 LT	293	SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
	294	SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
	295	SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
	296	char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
	297	SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
	298	char __user optval, int __user optlen), (sock, level, optname, optval, optlen)) \
	299	SOCKCALL_WRAP(name, sendmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len), \
	300	(iocb, sock, m, len)) \
	301	SOCKCALL_WRAP(name, recvmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len, int flags), \
	302	(iocb, sock, m, len, flags)) \
	303	SOCKCALL_WRAP(name, mmap, (struct file file, struct socket sock, struct vm_area_struct *vma), \
	304	(file, sock, vma)) \
	305	\
90ddc4f0	306	static const struct proto_ops name##_ops = { \
1da177e4 LT	307	.family = fam, \
	308	.owner = THIS_MODULE, \
	309	.release = __lock_##name##_release, \
	310	.bind = __lock_##name##_bind, \
	311	.connect = __lock_##name##_connect, \
	312	.socketpair = __lock_##name##_socketpair, \
	313	.accept = __lock_##name##_accept, \
	314	.getname = __lock_##name##_getname, \
	315	.poll = __lock_##name##_poll, \
	316	.ioctl = __lock_##name##_ioctl, \
89bbfc95	317	.compat_ioctl = __lock_##name##_compat_ioctl, \
1da177e4 LT	318	.listen = __lock_##name##_listen, \
	319	.shutdown = __lock_##name##_shutdown, \
	320	.setsockopt = __lock_##name##_setsockopt, \
	321	.getsockopt = __lock_##name##_getsockopt, \
	322	.sendmsg = __lock_##name##_sendmsg, \
	323	.recvmsg = __lock_##name##_recvmsg, \
	324	.mmap = __lock_##name##_mmap, \
	325	};
89bbfc95	326
1da177e4 LT	327	#endif
	328
	329	#define MODULE_ALIAS_NETPROTO(proto) \
	330	MODULE_ALIAS("net-pf-" __stringify(proto))
	331
4fdb3bb7 HW	332	#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
	333	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
	334
305e1e96 JD	335	#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
	336	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
	337	"-type-" __stringify(type))
	338
20380731 ACM	339	#ifdef CONFIG_SYSCTL
20380731 ACM	340	#include <linux/sysctl.h>
20380731 ACM	341	extern int net_msg_cost;
	342	extern int net_msg_burst;
	343	#endif
	344
1da177e4 LT	345	#endif /* __KERNEL__ */
1da177e4 LT	346	#endif /* _LINUX_NET_H */