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

#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)		*/
#define SYS_ACCEPT4	18		/* sys_accept4(2)		*/
#define SYS_RECVMMSG	19		/* sys_recvmmsg(2)		*/
#define SYS_SENDMMSG	20		/* sys_sendmmsg(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>
#include <linux/wait.h>
#include <linux/fcntl.h>	/* For O_CLOEXEC and O_NONBLOCK */
#include <linux/kmemcheck.h>
#include <linux/rcupdate.h>

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

#define SOCK_ASYNC_NOSPACE	0
#define SOCK_ASYNC_WAITDATA	1
#define SOCK_NOSPACE		2
#define SOCK_PASSCRED		3
#define SOCK_PASSSEC		4
#define SOCK_EXTERNALLY_ALLOCATED 5

#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)
/* Mask which covers at least up to SOCK_MASK-1.  The
 * remaining bits are used as flags. */
#define SOCK_TYPE_MASK 0xf

/* Flags for socket, socketpair, accept4 */
#define SOCK_CLOEXEC	O_CLOEXEC
#ifndef SOCK_NONBLOCK
#define SOCK_NONBLOCK	O_NONBLOCK
#endif

#endif /* ARCH_HAS_SOCKET_TYPES */

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

struct socket_wq {
	/* Note: wait MUST be first field of socket_wq */
	wait_queue_head_t	wait;
	struct fasync_struct	*fasync_list;
	struct rcu_head		rcu;
} ____cacheline_aligned_in_smp;

/**
 *  struct socket - general BSD socket
 *  @state: socket state (%SS_CONNECTED, etc)
 *  @type: socket type (%SOCK_STREAM, etc)
 *  @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
 *  @ops: protocol specific socket operations
 *  @file: File back pointer for gc
 *  @sk: internal networking protocol agnostic socket representation
 *  @wq: wait queue for several uses
 */
struct socket {
	socket_state		state;

	kmemcheck_bitfield_begin(type);
	short			type;
	kmemcheck_bitfield_end(type);

	unsigned long		flags;

	struct socket_wq __rcu	*wq;

	struct file		*file;
	struct sock		*sk;
	const struct proto_ops	*ops;
};

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);
#ifdef CONFIG_COMPAT
	int	 	(*compat_ioctl) (struct socket *sock, unsigned int cmd,
				      unsigned long arg);
#endif
	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, unsigned int optlen);
	int		(*getsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int __user *optlen);
#ifdef CONFIG_COMPAT
	int		(*compat_setsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, unsigned int optlen);
	int		(*compat_getsockopt)(struct socket *sock, int level,
				      int optname, char __user *optval, int __user *optlen);
#endif
	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);
	void		(*set_peek_off)(struct sock *sk, int val);
};

#define DECLARE_SOCKADDR(type, dst, src)	\
	type dst = ({ __sockaddr_check_size(sizeof(*dst)); (type) src; })

struct net_proto_family {
	int		family;
	int		(*create)(struct net *net, struct socket *sock,
				  int protocol, int kern);
	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(struct net *net, int family, int type, int proto,
				 struct socket **res, int kern);
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 struct file  *sock_alloc_file(struct socket *sock, int flags, const char *dname);
extern struct socket *sockfd_lookup(int fd, int *err);
extern struct socket *sock_from_file(struct file *file, int *err);
#define		     sockfd_put(sock) fput(sock->file)
extern int	     net_ratelimit(void);

#define net_ratelimited_function(function, ...)			\
do {								\
	if (net_ratelimit())					\
		function(__VA_ARGS__);				\
} while (0)

#define net_emerg_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__)
#define net_alert_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__)
#define net_crit_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__)
#define net_err_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__)
#define net_notice_ratelimited(fmt, ...)			\
	net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__)
#define net_warn_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
#define net_info_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
#define net_dbg_ratelimited(fmt, ...)				\
	net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)

#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, unsigned 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);

#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))

#define MODULE_ALIAS_NET_PF_PROTO_NAME(pf, proto, name) \
	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
		     name)
#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
0098b727	21	#include <linux/socket.h>
1da177e4 LT	22	#include <asm/socket.h>
1da177e4 LT	23
0098b727	24	#define NPROTO AF_MAX
1da177e4 LT	25
	26	#define SYS_SOCKET 1 /* sys_socket(2) */
	27	#define SYS_BIND 2 /* sys_bind(2) */
	28	#define SYS_CONNECT 3 /* sys_connect(2) */
	29	#define SYS_LISTEN 4 /* sys_listen(2) */
	30	#define SYS_ACCEPT 5 /* sys_accept(2) */
	31	#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
	32	#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
	33	#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
	34	#define SYS_SEND 9 /* sys_send(2) */
	35	#define SYS_RECV 10 /* sys_recv(2) */
	36	#define SYS_SENDTO 11 /* sys_sendto(2) */
	37	#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
	38	#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
	39	#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
	40	#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
	41	#define SYS_SENDMSG 16 /* sys_sendmsg(2) */
	42	#define SYS_RECVMSG 17 /* sys_recvmsg(2) */
de11defe	43	#define SYS_ACCEPT4 18 /* sys_accept4(2) */
a2e27255	44	#define SYS_RECVMMSG 19 /* sys_recvmmsg(2) */
228e548e	45	#define SYS_SENDMMSG 20 /* sys_sendmmsg(2) */
1da177e4 LT	46
	47	typedef enum {
	48	SS_FREE = 0, /* not allocated */
	49	SS_UNCONNECTED, /* unconnected to any socket */
	50	SS_CONNECTING, /* in process of connecting */
	51	SS_CONNECTED, /* connected to socket */
	52	SS_DISCONNECTING /* in process of disconnecting */
	53	} socket_state;
	54
	55	#define __SO_ACCEPTCON (1 << 16) /* performed a listen */
	56
	57	#ifdef __KERNEL__
eacf17bd	58	#include <linux/stringify.h>
cb4db4c2	59	#include <linux/random.h>
5770a3fb DW	60	#include <linux/wait.h>
5770a3fb DW	61	#include <linux/fcntl.h> /* For O_CLOEXEC and O_NONBLOCK */
29a020d3	62	#include <linux/kmemcheck.h>
43815482	63	#include <linux/rcupdate.h>
5770a3fb DW	64
	65	struct poll_table_struct;
	66	struct pipe_inode_info;
	67	struct inode;
56b31d1c	68	struct file;
5770a3fb	69	struct net;
1da177e4 LT	70
	71	#define SOCK_ASYNC_NOSPACE 0
	72	#define SOCK_ASYNC_WAITDATA 1
	73	#define SOCK_NOSPACE 2
	74	#define SOCK_PASSCRED 3
877ce7c1	75	#define SOCK_PASSSEC 4
b09e786b	76	#define SOCK_EXTERNALLY_ALLOCATED 5
1da177e4 LT	77
1da177e4 LT	78	#ifndef ARCH_HAS_SOCKET_TYPES
4dc3b16b PP	79	/**
	80	* enum sock_type - Socket types
	81	* @SOCK_STREAM: stream (connection) socket
	82	* @SOCK_DGRAM: datagram (conn.less) socket
	83	* @SOCK_RAW: raw socket
	84	* @SOCK_RDM: reliably-delivered message
	85	* @SOCK_SEQPACKET: sequential packet socket
8f2709b5	86	* @SOCK_DCCP: Datagram Congestion Control Protocol socket
4dc3b16b PP	87	* @SOCK_PACKET: linux specific way of getting packets at the dev level.
	88	* For writing rarp and other similar things on the user level.
	89	*
1da177e4 LT	90	* When adding some new socket type please
	91	* grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
	92	* overrides this enum for binary compat reasons.
1da177e4 LT	93	*/
	94	enum sock_type {
	95	SOCK_STREAM = 1,
	96	SOCK_DGRAM = 2,
	97	SOCK_RAW = 3,
	98	SOCK_RDM = 4,
	99	SOCK_SEQPACKET = 5,
7c657876	100	SOCK_DCCP = 6,
1da177e4 LT	101	SOCK_PACKET = 10,
	102	};
	103
	104	#define SOCK_MAX (SOCK_PACKET + 1)
a677a039 UD	105	/* Mask which covers at least up to SOCK_MASK-1. The
	106	* remaining bits are used as flags. */
	107	#define SOCK_TYPE_MASK 0xf
	108
de11defe	109	/* Flags for socket, socketpair, accept4 */
a677a039	110	#define SOCK_CLOEXEC O_CLOEXEC
c019bbc6 UD	111	#ifndef SOCK_NONBLOCK
	112	#define SOCK_NONBLOCK O_NONBLOCK
	113	#endif
1da177e4 LT	114
	115	#endif /* ARCH_HAS_SOCKET_TYPES */
	116
91cf45f0 TM	117	enum sock_shutdown_cmd {
	118	SHUT_RD = 0,
	119	SHUT_WR = 1,
	120	SHUT_RDWR = 2,
	121	};
	122
43815482	123	struct socket_wq {
eaefd110	124	/* Note: wait MUST be first field of socket_wq */
43815482 ED	125	wait_queue_head_t wait;
	126	struct fasync_struct *fasync_list;
	127	struct rcu_head rcu;
	128	} ____cacheline_aligned_in_smp;
	129
1da177e4 LT	130	/**
1da177e4 LT	131	* struct socket - general BSD socket
4dc3b16b	132	* @state: socket state (%SS_CONNECTED, etc)
2c693610	133	* @type: socket type (%SOCK_STREAM, etc)
4dc3b16b PP	134	* @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
4dc3b16b PP	135	* @ops: protocol specific socket operations
4dc3b16b PP	136	* @file: File back pointer for gc
4dc3b16b PP	137	* @sk: internal networking protocol agnostic socket representation
e2aec372	138	* @wq: wait queue for several uses
1da177e4 LT	139	*/
	140	struct socket {
	141	socket_state state;
29a020d3 ED	142
29a020d3 ED	143	kmemcheck_bitfield_begin(type);
2c693610	144	short type;
29a020d3 ED	145	kmemcheck_bitfield_end(type);
29a020d3 ED	146
1da177e4	147	unsigned long flags;
43815482	148
eaefd110	149	struct socket_wq __rcu *wq;
8bdd663a	150
1da177e4 LT	151	struct file *file;
1da177e4 LT	152	struct sock *sk;
8bdd663a	153	const struct proto_ops *ops;
1da177e4 LT	154	};
	155
	156	struct vm_area_struct;
	157	struct page;
	158	struct kiocb;
	159	struct sockaddr;
	160	struct msghdr;
	161	struct module;
	162
	163	struct proto_ops {
	164	int family;
	165	struct module *owner;
	166	int (release) (struct socket sock);
	167	int (bind) (struct socket sock,
	168	struct sockaddr *myaddr,
	169	int sockaddr_len);
	170	int (connect) (struct socket sock,
	171	struct sockaddr *vaddr,
	172	int sockaddr_len, int flags);
	173	int (socketpair)(struct socket sock1,
	174	struct socket *sock2);
	175	int (accept) (struct socket sock,
	176	struct socket *newsock, int flags);
	177	int (getname) (struct socket sock,
	178	struct sockaddr *addr,
	179	int *sockaddr_len, int peer);
	180	unsigned int (poll) (struct file file, struct socket *sock,
	181	struct poll_table_struct *wait);
	182	int (ioctl) (struct socket sock, unsigned int cmd,
	183	unsigned long arg);
1621e094	184	#ifdef CONFIG_COMPAT
89bbfc95 SP	185	int (compat_ioctl) (struct socket sock, unsigned int cmd,
89bbfc95 SP	186	unsigned long arg);
1621e094	187	#endif
1da177e4 LT	188	int (listen) (struct socket sock, int len);
	189	int (shutdown) (struct socket sock, int flags);
	190	int (setsockopt)(struct socket sock, int level,
b7058842	191	int optname, char __user *optval, unsigned int optlen);
1da177e4 LT	192	int (getsockopt)(struct socket sock, int level,
1da177e4 LT	193	int optname, char __user optval, int __user optlen);
1621e094	194	#ifdef CONFIG_COMPAT
3fdadf7d	195	int (compat_setsockopt)(struct socket sock, int level,
b7058842	196	int optname, char __user *optval, unsigned int optlen);
3fdadf7d DM	197	int (compat_getsockopt)(struct socket sock, int level,
3fdadf7d DM	198	int optname, char __user optval, int __user optlen);
1621e094	199	#endif
1da177e4 LT	200	int (sendmsg) (struct kiocb iocb, struct socket *sock,
	201	struct msghdr *m, size_t total_len);
	202	int (recvmsg) (struct kiocb iocb, struct socket *sock,
	203	struct msghdr *m, size_t total_len,
	204	int flags);
	205	int (mmap) (struct file file, struct socket *sock,
	206	struct vm_area_struct * vma);
	207	ssize_t (sendpage) (struct socket sock, struct page *page,
	208	int offset, size_t size, int flags);
9c55e01c JA	209	ssize_t (splice_read)(struct socket sock, loff_t *ppos,
9c55e01c JA	210	struct pipe_inode_info *pipe, size_t len, unsigned int flags);
ef64a54f	211	void (set_peek_off)(struct sock sk, int val);
1da177e4 LT	212	};
1da177e4 LT	213
38bfd8f5 CG	214	#define DECLARE_SOCKADDR(type, dst, src) \
	215	type dst = ({ __sockaddr_check_size(sizeof(*dst)); (type) src; })
	216
1da177e4 LT	217	struct net_proto_family {
1da177e4 LT	218	int family;
3f378b68 EP	219	int (create)(struct net net, struct socket *sock,
3f378b68 EP	220	int protocol, int kern);
1da177e4 LT	221	struct module *owner;
	222	};
	223
	224	struct iovec;
	225	struct kvec;
	226
8d8ad9d7 PE	227	enum {
	228	SOCK_WAKE_IO,
	229	SOCK_WAKE_WAITD,
	230	SOCK_WAKE_SPACE,
	231	SOCK_WAKE_URG,
	232	};
	233
1da177e4	234	extern int sock_wake_async(struct socket *sk, int how, int band);
f0fd27d4 SH	235	extern int sock_register(const struct net_proto_family *fam);
f0fd27d4 SH	236	extern void sock_unregister(int family);
721db93a PE	237	extern int __sock_create(struct net *net, int family, int type, int proto,
721db93a PE	238	struct socket **res, int kern);
1da177e4 LT	239	extern int sock_create(int family, int type, int proto,
	240	struct socket **res);
	241	extern int sock_create_kern(int family, int type, int proto,
	242	struct socket **res);
	243	extern int sock_create_lite(int family, int type, int proto,
	244	struct socket **res);
	245	extern void sock_release(struct socket *sock);
	246	extern int sock_sendmsg(struct socket sock, struct msghdr msg,
	247	size_t len);
	248	extern int sock_recvmsg(struct socket sock, struct msghdr msg,
	249	size_t size, int flags);
aab174f0	250	extern struct file sock_alloc_file(struct socket sock, int flags, const char *dname);
1da177e4	251	extern struct socket sockfd_lookup(int fd, int err);
406a3c63	252	extern struct socket sock_from_file(struct file file, int *err);
1da177e4 LT	253	#define sockfd_put(sock) fput(sock->file)
1da177e4 LT	254	extern int net_ratelimit(void);
aaa248f6	255
3a3bfb61 JP	256	#define net_ratelimited_function(function, ...) \
	257	do { \
	258	if (net_ratelimit()) \
	259	function(__VA_ARGS__); \
	260	} while (0)
	261
	262	#define net_emerg_ratelimited(fmt, ...) \
	263	net_ratelimited_function(pr_emerg, fmt, ##__VA_ARGS__)
	264	#define net_alert_ratelimited(fmt, ...) \
	265	net_ratelimited_function(pr_alert, fmt, ##__VA_ARGS__)
	266	#define net_crit_ratelimited(fmt, ...) \
	267	net_ratelimited_function(pr_crit, fmt, ##__VA_ARGS__)
	268	#define net_err_ratelimited(fmt, ...) \
	269	net_ratelimited_function(pr_err, fmt, ##__VA_ARGS__)
	270	#define net_notice_ratelimited(fmt, ...) \
	271	net_ratelimited_function(pr_notice, fmt, ##__VA_ARGS__)
	272	#define net_warn_ratelimited(fmt, ...) \
	273	net_ratelimited_function(pr_warn, fmt, ##__VA_ARGS__)
	274	#define net_info_ratelimited(fmt, ...) \
	275	net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
	276	#define net_dbg_ratelimited(fmt, ...) \
	277	net_ratelimited_function(pr_debug, fmt, ##__VA_ARGS__)
	278
aaa248f6	279	#define net_random() random32()
a64b78a0	280	#define net_srandom(seed) srandom32((__force u32)seed)
1da177e4 LT	281
	282	extern int kernel_sendmsg(struct socket sock, struct msghdr msg,
	283	struct kvec *vec, size_t num, size_t len);
	284	extern int kernel_recvmsg(struct socket sock, struct msghdr msg,
	285	struct kvec *vec, size_t num,
	286	size_t len, int flags);
	287
ac5a488e SS	288	extern int kernel_bind(struct socket sock, struct sockaddr addr,
	289	int addrlen);
	290	extern int kernel_listen(struct socket *sock, int backlog);
	291	extern int kernel_accept(struct socket sock, struct socket *newsock,
	292	int flags);
	293	extern int kernel_connect(struct socket sock, struct sockaddr addr,
	294	int addrlen, int flags);
	295	extern int kernel_getsockname(struct socket sock, struct sockaddr addr,
	296	int *addrlen);
	297	extern int kernel_getpeername(struct socket sock, struct sockaddr addr,
	298	int *addrlen);
	299	extern int kernel_getsockopt(struct socket *sock, int level, int optname,
	300	char optval, int optlen);
	301	extern int kernel_setsockopt(struct socket *sock, int level, int optname,
b7058842	302	char *optval, unsigned int optlen);
ac5a488e SS	303	extern int kernel_sendpage(struct socket sock, struct page page, int offset,
	304	size_t size, int flags);
	305	extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
91cf45f0 TM	306	extern int kernel_sock_shutdown(struct socket *sock,
91cf45f0 TM	307	enum sock_shutdown_cmd how);
ac5a488e	308
1da177e4 LT	309	#define MODULE_ALIAS_NETPROTO(proto) \
	310	MODULE_ALIAS("net-pf-" __stringify(proto))
	311
4fdb3bb7 HW	312	#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
	313	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
	314
305e1e96 JD	315	#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
	316	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
	317	"-type-" __stringify(type))
	318
2033e9bf NH	319	#define MODULE_ALIAS_NET_PF_PROTO_NAME(pf, proto, name) \
	320	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
	321	name)
1da177e4 LT	322	#endif /* __KERNEL__ */
1da177e4 LT	323	#endif /* _LINUX_NET_H */