[mirror_ubuntu-zesty-kernel.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 <asm/socket.h>

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

#define NPROTO		34		/* 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)		*/
#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>
1da177e4 LT	22	#include <asm/socket.h>
	23
	24	struct poll_table_struct;
9c55e01c	25	struct pipe_inode_info;
1da177e4	26	struct inode;
1b8d7ae4	27	struct net;
1da177e4	28
17926a79	29	#define NPROTO 34 /* should be enough for now.. */
1da177e4 LT	30
	31	#define SYS_SOCKET 1 /* sys_socket(2) */
	32	#define SYS_BIND 2 /* sys_bind(2) */
	33	#define SYS_CONNECT 3 /* sys_connect(2) */
	34	#define SYS_LISTEN 4 /* sys_listen(2) */
	35	#define SYS_ACCEPT 5 /* sys_accept(2) */
	36	#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
	37	#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
	38	#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
	39	#define SYS_SEND 9 /* sys_send(2) */
	40	#define SYS_RECV 10 /* sys_recv(2) */
	41	#define SYS_SENDTO 11 /* sys_sendto(2) */
	42	#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
	43	#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
	44	#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
	45	#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
	46	#define SYS_SENDMSG 16 /* sys_sendmsg(2) */
	47	#define SYS_RECVMSG 17 /* sys_recvmsg(2) */
	48
	49	typedef enum {
	50	SS_FREE = 0, /* not allocated */
	51	SS_UNCONNECTED, /* unconnected to any socket */
	52	SS_CONNECTING, /* in process of connecting */
	53	SS_CONNECTED, /* connected to socket */
	54	SS_DISCONNECTING /* in process of disconnecting */
	55	} socket_state;
	56
	57	#define __SO_ACCEPTCON (1 << 16) /* performed a listen */
	58
	59	#ifdef __KERNEL__
eacf17bd	60	#include <linux/stringify.h>
cb4db4c2	61	#include <linux/random.h>
1da177e4 LT	62
	63	#define SOCK_ASYNC_NOSPACE 0
	64	#define SOCK_ASYNC_WAITDATA 1
	65	#define SOCK_NOSPACE 2
	66	#define SOCK_PASSCRED 3
877ce7c1	67	#define SOCK_PASSSEC 4
1da177e4 LT	68
1da177e4 LT	69	#ifndef ARCH_HAS_SOCKET_TYPES
4dc3b16b PP	70	/**
	71	* enum sock_type - Socket types
	72	* @SOCK_STREAM: stream (connection) socket
	73	* @SOCK_DGRAM: datagram (conn.less) socket
	74	* @SOCK_RAW: raw socket
	75	* @SOCK_RDM: reliably-delivered message
	76	* @SOCK_SEQPACKET: sequential packet socket
8f2709b5	77	* @SOCK_DCCP: Datagram Congestion Control Protocol socket
4dc3b16b PP	78	* @SOCK_PACKET: linux specific way of getting packets at the dev level.
	79	* For writing rarp and other similar things on the user level.
	80	*
1da177e4 LT	81	* When adding some new socket type please
	82	* grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
	83	* overrides this enum for binary compat reasons.
1da177e4 LT	84	*/
	85	enum sock_type {
	86	SOCK_STREAM = 1,
	87	SOCK_DGRAM = 2,
	88	SOCK_RAW = 3,
	89	SOCK_RDM = 4,
	90	SOCK_SEQPACKET = 5,
7c657876	91	SOCK_DCCP = 6,
1da177e4 LT	92	SOCK_PACKET = 10,
	93	};
	94
	95	#define SOCK_MAX (SOCK_PACKET + 1)
	96
	97	#endif /* ARCH_HAS_SOCKET_TYPES */
	98
91cf45f0 TM	99	enum sock_shutdown_cmd {
	100	SHUT_RD = 0,
	101	SHUT_WR = 1,
	102	SHUT_RDWR = 2,
	103	};
	104
1da177e4 LT	105	/**
1da177e4 LT	106	* struct socket - general BSD socket
4dc3b16b PP	107	* @state: socket state (%SS_CONNECTED, etc)
	108	* @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
	109	* @ops: protocol specific socket operations
	110	* @fasync_list: Asynchronous wake up list
	111	* @file: File back pointer for gc
	112	* @sk: internal networking protocol agnostic socket representation
	113	* @wait: wait queue for several uses
	114	* @type: socket type (%SOCK_STREAM, etc)
1da177e4 LT	115	*/
	116	struct socket {
	117	socket_state state;
	118	unsigned long flags;
90ddc4f0	119	const struct proto_ops *ops;
1da177e4 LT	120	struct fasync_struct *fasync_list;
	121	struct file *file;
	122	struct sock *sk;
	123	wait_queue_head_t wait;
	124	short type;
	125	};
	126
	127	struct vm_area_struct;
	128	struct page;
	129	struct kiocb;
	130	struct sockaddr;
	131	struct msghdr;
	132	struct module;
	133
	134	struct proto_ops {
	135	int family;
	136	struct module *owner;
	137	int (release) (struct socket sock);
	138	int (bind) (struct socket sock,
	139	struct sockaddr *myaddr,
	140	int sockaddr_len);
	141	int (connect) (struct socket sock,
	142	struct sockaddr *vaddr,
	143	int sockaddr_len, int flags);
	144	int (socketpair)(struct socket sock1,
	145	struct socket *sock2);
	146	int (accept) (struct socket sock,
	147	struct socket *newsock, int flags);
	148	int (getname) (struct socket sock,
	149	struct sockaddr *addr,
	150	int *sockaddr_len, int peer);
	151	unsigned int (poll) (struct file file, struct socket *sock,
	152	struct poll_table_struct *wait);
	153	int (ioctl) (struct socket sock, unsigned int cmd,
	154	unsigned long arg);
89bbfc95 SP	155	int (compat_ioctl) (struct socket sock, unsigned int cmd,
89bbfc95 SP	156	unsigned long arg);
1da177e4 LT	157	int (listen) (struct socket sock, int len);
	158	int (shutdown) (struct socket sock, int flags);
	159	int (setsockopt)(struct socket sock, int level,
	160	int optname, char __user *optval, int optlen);
	161	int (getsockopt)(struct socket sock, int level,
	162	int optname, char __user optval, int __user optlen);
3fdadf7d DM	163	int (compat_setsockopt)(struct socket sock, int level,
	164	int optname, char __user *optval, int optlen);
	165	int (compat_getsockopt)(struct socket sock, int level,
	166	int optname, char __user optval, int __user optlen);
1da177e4 LT	167	int (sendmsg) (struct kiocb iocb, struct socket *sock,
	168	struct msghdr *m, size_t total_len);
	169	int (recvmsg) (struct kiocb iocb, struct socket *sock,
	170	struct msghdr *m, size_t total_len,
	171	int flags);
	172	int (mmap) (struct file file, struct socket *sock,
	173	struct vm_area_struct * vma);
	174	ssize_t (sendpage) (struct socket sock, struct page *page,
	175	int offset, size_t size, int flags);
9c55e01c JA	176	ssize_t (splice_read)(struct socket sock, loff_t *ppos,
9c55e01c JA	177	struct pipe_inode_info *pipe, size_t len, unsigned int flags);
1da177e4 LT	178	};
	179
	180	struct net_proto_family {
	181	int family;
1b8d7ae4	182	int (create)(struct net net, struct socket *sock, int protocol);
1da177e4 LT	183	struct module *owner;
	184	};
	185
	186	struct iovec;
	187	struct kvec;
	188
8d8ad9d7 PE	189	enum {
	190	SOCK_WAKE_IO,
	191	SOCK_WAKE_WAITD,
	192	SOCK_WAKE_SPACE,
	193	SOCK_WAKE_URG,
	194	};
	195
1da177e4	196	extern int sock_wake_async(struct socket *sk, int how, int band);
f0fd27d4 SH	197	extern int sock_register(const struct net_proto_family *fam);
f0fd27d4 SH	198	extern void sock_unregister(int family);
1da177e4 LT	199	extern int sock_create(int family, int type, int proto,
	200	struct socket **res);
	201	extern int sock_create_kern(int family, int type, int proto,
	202	struct socket **res);
	203	extern int sock_create_lite(int family, int type, int proto,
	204	struct socket **res);
	205	extern void sock_release(struct socket *sock);
	206	extern int sock_sendmsg(struct socket sock, struct msghdr msg,
	207	size_t len);
	208	extern int sock_recvmsg(struct socket sock, struct msghdr msg,
	209	size_t size, int flags);
	210	extern int sock_map_fd(struct socket *sock);
	211	extern struct socket sockfd_lookup(int fd, int err);
	212	#define sockfd_put(sock) fput(sock->file)
	213	extern int net_ratelimit(void);
aaa248f6 SH	214
aaa248f6 SH	215	#define net_random() random32()
a64b78a0	216	#define net_srandom(seed) srandom32((__force u32)seed)
1da177e4 LT	217
	218	extern int kernel_sendmsg(struct socket sock, struct msghdr msg,
	219	struct kvec *vec, size_t num, size_t len);
	220	extern int kernel_recvmsg(struct socket sock, struct msghdr msg,
	221	struct kvec *vec, size_t num,
	222	size_t len, int flags);
	223
ac5a488e SS	224	extern int kernel_bind(struct socket sock, struct sockaddr addr,
	225	int addrlen);
	226	extern int kernel_listen(struct socket *sock, int backlog);
	227	extern int kernel_accept(struct socket sock, struct socket *newsock,
	228	int flags);
	229	extern int kernel_connect(struct socket sock, struct sockaddr addr,
	230	int addrlen, int flags);
	231	extern int kernel_getsockname(struct socket sock, struct sockaddr addr,
	232	int *addrlen);
	233	extern int kernel_getpeername(struct socket sock, struct sockaddr addr,
	234	int *addrlen);
	235	extern int kernel_getsockopt(struct socket *sock, int level, int optname,
	236	char optval, int optlen);
	237	extern int kernel_setsockopt(struct socket *sock, int level, int optname,
	238	char *optval, int optlen);
	239	extern int kernel_sendpage(struct socket sock, struct page page, int offset,
	240	size_t size, int flags);
	241	extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
91cf45f0 TM	242	extern int kernel_sock_shutdown(struct socket *sock,
91cf45f0 TM	243	enum sock_shutdown_cmd how);
ac5a488e	244
1da177e4 LT	245	#ifndef CONFIG_SMP
	246	#define SOCKOPS_WRAPPED(name) name
	247	#define SOCKOPS_WRAP(name, fam)
	248	#else
	249
	250	#define SOCKOPS_WRAPPED(name) __unlocked_##name
	251
	252	#define SOCKCALL_WRAP(name, call, parms, args) \
	253	static int __lock_##name##_##call parms \
	254	{ \
	255	int ret; \
	256	lock_kernel(); \
	257	ret = __unlocked_##name##_ops.call args ;\
	258	unlock_kernel(); \
	259	return ret; \
	260	}
	261
	262	#define SOCKCALL_UWRAP(name, call, parms, args) \
	263	static unsigned int __lock_##name##_##call parms \
	264	{ \
	265	int ret; \
	266	lock_kernel(); \
	267	ret = __unlocked_##name##_ops.call args ;\
	268	unlock_kernel(); \
	269	return ret; \
	270	}
	271
	272
	273	#define SOCKOPS_WRAP(name, fam) \
	274	SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
	275	SOCKCALL_WRAP(name, bind, (struct socket sock, struct sockaddr uaddr, int addr_len), \
	276	(sock, uaddr, addr_len)) \
	277	SOCKCALL_WRAP(name, connect, (struct socket sock, struct sockaddr uaddr, \
	278	int addr_len, int flags), \
	279	(sock, uaddr, addr_len, flags)) \
	280	SOCKCALL_WRAP(name, socketpair, (struct socket sock1, struct socket sock2), \
	281	(sock1, sock2)) \
	282	SOCKCALL_WRAP(name, accept, (struct socket sock, struct socket newsock, \
	283	int flags), (sock, newsock, flags)) \
	284	SOCKCALL_WRAP(name, getname, (struct socket sock, struct sockaddr uaddr, \
	285	int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
	286	SOCKCALL_UWRAP(name, poll, (struct file file, struct socket sock, struct poll_table_struct *wait), \
	287	(file, sock, wait)) \
	288	SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
	289	unsigned long arg), (sock, cmd, arg)) \
89bbfc95 SP	290	SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \
89bbfc95 SP	291	unsigned long arg), (sock, cmd, arg)) \
1da177e4 LT	292	SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
	293	SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
	294	SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
	295	char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
	296	SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
	297	char __user optval, int __user optlen), (sock, level, optname, optval, optlen)) \
	298	SOCKCALL_WRAP(name, sendmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len), \
	299	(iocb, sock, m, len)) \
	300	SOCKCALL_WRAP(name, recvmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len, int flags), \
	301	(iocb, sock, m, len, flags)) \
	302	SOCKCALL_WRAP(name, mmap, (struct file file, struct socket sock, struct vm_area_struct *vma), \
	303	(file, sock, vma)) \
	304	\
90ddc4f0	305	static const struct proto_ops name##_ops = { \
1da177e4 LT	306	.family = fam, \
	307	.owner = THIS_MODULE, \
	308	.release = __lock_##name##_release, \
	309	.bind = __lock_##name##_bind, \
	310	.connect = __lock_##name##_connect, \
	311	.socketpair = __lock_##name##_socketpair, \
	312	.accept = __lock_##name##_accept, \
	313	.getname = __lock_##name##_getname, \
	314	.poll = __lock_##name##_poll, \
	315	.ioctl = __lock_##name##_ioctl, \
89bbfc95	316	.compat_ioctl = __lock_##name##_compat_ioctl, \
1da177e4 LT	317	.listen = __lock_##name##_listen, \
	318	.shutdown = __lock_##name##_shutdown, \
	319	.setsockopt = __lock_##name##_setsockopt, \
	320	.getsockopt = __lock_##name##_getsockopt, \
	321	.sendmsg = __lock_##name##_sendmsg, \
	322	.recvmsg = __lock_##name##_recvmsg, \
	323	.mmap = __lock_##name##_mmap, \
	324	};
89bbfc95	325
1da177e4 LT	326	#endif
	327
	328	#define MODULE_ALIAS_NETPROTO(proto) \
	329	MODULE_ALIAS("net-pf-" __stringify(proto))
	330
4fdb3bb7 HW	331	#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
	332	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
	333
305e1e96 JD	334	#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
	335	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
	336	"-type-" __stringify(type))
	337
20380731 ACM	338	#ifdef CONFIG_SYSCTL
20380731 ACM	339	#include <linux/sysctl.h>
20380731 ACM	340	extern int net_msg_cost;
	341	extern int net_msg_burst;
	342	#endif
	343
1da177e4 LT	344	#endif /* __KERNEL__ */
1da177e4 LT	345	#endif /* _LINUX_NET_H */