[mirror_ubuntu-bionic-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/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)		*/

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>

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

#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)
/* 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 - 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
 *  @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
 */
struct socket {
	socket_state		state;

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

	unsigned long		flags;
	/*
	 * Please keep fasync_list & wait fields in the same cache line
	 */
	struct fasync_struct	*fasync_list;
	wait_queue_head_t	wait;

	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);
	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, int flags);
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 struct ratelimit_state net_ratelimit_state;
#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
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) */
1da177e4 LT	44
	45	typedef enum {
	46	SS_FREE = 0, /* not allocated */
	47	SS_UNCONNECTED, /* unconnected to any socket */
	48	SS_CONNECTING, /* in process of connecting */
	49	SS_CONNECTED, /* connected to socket */
	50	SS_DISCONNECTING /* in process of disconnecting */
	51	} socket_state;
	52
	53	#define __SO_ACCEPTCON (1 << 16) /* performed a listen */
	54
	55	#ifdef __KERNEL__
eacf17bd	56	#include <linux/stringify.h>
cb4db4c2	57	#include <linux/random.h>
5770a3fb DW	58	#include <linux/wait.h>
5770a3fb DW	59	#include <linux/fcntl.h> /* For O_CLOEXEC and O_NONBLOCK */
29a020d3	60	#include <linux/kmemcheck.h>
5770a3fb DW	61
	62	struct poll_table_struct;
	63	struct pipe_inode_info;
	64	struct inode;
	65	struct net;
1da177e4 LT	66
	67	#define SOCK_ASYNC_NOSPACE 0
	68	#define SOCK_ASYNC_WAITDATA 1
	69	#define SOCK_NOSPACE 2
	70	#define SOCK_PASSCRED 3
877ce7c1	71	#define SOCK_PASSSEC 4
1da177e4 LT	72
1da177e4 LT	73	#ifndef ARCH_HAS_SOCKET_TYPES
4dc3b16b PP	74	/**
	75	* enum sock_type - Socket types
	76	* @SOCK_STREAM: stream (connection) socket
	77	* @SOCK_DGRAM: datagram (conn.less) socket
	78	* @SOCK_RAW: raw socket
	79	* @SOCK_RDM: reliably-delivered message
	80	* @SOCK_SEQPACKET: sequential packet socket
8f2709b5	81	* @SOCK_DCCP: Datagram Congestion Control Protocol socket
4dc3b16b PP	82	* @SOCK_PACKET: linux specific way of getting packets at the dev level.
	83	* For writing rarp and other similar things on the user level.
	84	*
1da177e4 LT	85	* When adding some new socket type please
	86	* grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
	87	* overrides this enum for binary compat reasons.
1da177e4 LT	88	*/
	89	enum sock_type {
	90	SOCK_STREAM = 1,
	91	SOCK_DGRAM = 2,
	92	SOCK_RAW = 3,
	93	SOCK_RDM = 4,
	94	SOCK_SEQPACKET = 5,
7c657876	95	SOCK_DCCP = 6,
1da177e4 LT	96	SOCK_PACKET = 10,
	97	};
	98
	99	#define SOCK_MAX (SOCK_PACKET + 1)
a677a039 UD	100	/* Mask which covers at least up to SOCK_MASK-1. The
	101	* remaining bits are used as flags. */
	102	#define SOCK_TYPE_MASK 0xf
	103
de11defe	104	/* Flags for socket, socketpair, accept4 */
a677a039	105	#define SOCK_CLOEXEC O_CLOEXEC
c019bbc6 UD	106	#ifndef SOCK_NONBLOCK
	107	#define SOCK_NONBLOCK O_NONBLOCK
	108	#endif
1da177e4 LT	109
	110	#endif /* ARCH_HAS_SOCKET_TYPES */
	111
91cf45f0 TM	112	enum sock_shutdown_cmd {
	113	SHUT_RD = 0,
	114	SHUT_WR = 1,
	115	SHUT_RDWR = 2,
	116	};
	117
1da177e4 LT	118	/**
1da177e4 LT	119	* struct socket - general BSD socket
4dc3b16b	120	* @state: socket state (%SS_CONNECTED, etc)
2c693610	121	* @type: socket type (%SOCK_STREAM, etc)
4dc3b16b PP	122	* @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
	123	* @ops: protocol specific socket operations
	124	* @fasync_list: Asynchronous wake up list
	125	* @file: File back pointer for gc
	126	* @sk: internal networking protocol agnostic socket representation
	127	* @wait: wait queue for several uses
1da177e4 LT	128	*/
	129	struct socket {
	130	socket_state state;
29a020d3 ED	131
29a020d3 ED	132	kmemcheck_bitfield_begin(type);
2c693610	133	short type;
29a020d3 ED	134	kmemcheck_bitfield_end(type);
29a020d3 ED	135
1da177e4	136	unsigned long flags;
8bdd663a ED	137	/*
	138	* Please keep fasync_list & wait fields in the same cache line
	139	*/
1da177e4	140	struct fasync_struct *fasync_list;
8bdd663a ED	141	wait_queue_head_t wait;
8bdd663a ED	142
1da177e4 LT	143	struct file *file;
1da177e4 LT	144	struct sock *sk;
8bdd663a	145	const struct proto_ops *ops;
1da177e4 LT	146	};
	147
	148	struct vm_area_struct;
	149	struct page;
	150	struct kiocb;
	151	struct sockaddr;
	152	struct msghdr;
	153	struct module;
	154
	155	struct proto_ops {
	156	int family;
	157	struct module *owner;
	158	int (release) (struct socket sock);
	159	int (bind) (struct socket sock,
	160	struct sockaddr *myaddr,
	161	int sockaddr_len);
	162	int (connect) (struct socket sock,
	163	struct sockaddr *vaddr,
	164	int sockaddr_len, int flags);
	165	int (socketpair)(struct socket sock1,
	166	struct socket *sock2);
	167	int (accept) (struct socket sock,
	168	struct socket *newsock, int flags);
	169	int (getname) (struct socket sock,
	170	struct sockaddr *addr,
	171	int *sockaddr_len, int peer);
	172	unsigned int (poll) (struct file file, struct socket *sock,
	173	struct poll_table_struct *wait);
	174	int (ioctl) (struct socket sock, unsigned int cmd,
	175	unsigned long arg);
89bbfc95 SP	176	int (compat_ioctl) (struct socket sock, unsigned int cmd,
89bbfc95 SP	177	unsigned long arg);
1da177e4 LT	178	int (listen) (struct socket sock, int len);
	179	int (shutdown) (struct socket sock, int flags);
	180	int (setsockopt)(struct socket sock, int level,
	181	int optname, char __user *optval, int optlen);
	182	int (getsockopt)(struct socket sock, int level,
	183	int optname, char __user optval, int __user optlen);
3fdadf7d DM	184	int (compat_setsockopt)(struct socket sock, int level,
	185	int optname, char __user *optval, int optlen);
	186	int (compat_getsockopt)(struct socket sock, int level,
	187	int optname, char __user optval, int __user optlen);
1da177e4 LT	188	int (sendmsg) (struct kiocb iocb, struct socket *sock,
	189	struct msghdr *m, size_t total_len);
	190	int (recvmsg) (struct kiocb iocb, struct socket *sock,
	191	struct msghdr *m, size_t total_len,
	192	int flags);
	193	int (mmap) (struct file file, struct socket *sock,
	194	struct vm_area_struct * vma);
	195	ssize_t (sendpage) (struct socket sock, struct page *page,
	196	int offset, size_t size, int flags);
9c55e01c JA	197	ssize_t (splice_read)(struct socket sock, loff_t *ppos,
9c55e01c JA	198	struct pipe_inode_info *pipe, size_t len, unsigned int flags);
1da177e4 LT	199	};
	200
	201	struct net_proto_family {
	202	int family;
1b8d7ae4	203	int (create)(struct net net, struct socket *sock, int protocol);
1da177e4 LT	204	struct module *owner;
	205	};
	206
	207	struct iovec;
	208	struct kvec;
	209
8d8ad9d7 PE	210	enum {
	211	SOCK_WAKE_IO,
	212	SOCK_WAKE_WAITD,
	213	SOCK_WAKE_SPACE,
	214	SOCK_WAKE_URG,
	215	};
	216
1da177e4	217	extern int sock_wake_async(struct socket *sk, int how, int band);
f0fd27d4 SH	218	extern int sock_register(const struct net_proto_family *fam);
f0fd27d4 SH	219	extern void sock_unregister(int family);
1da177e4 LT	220	extern int sock_create(int family, int type, int proto,
	221	struct socket **res);
	222	extern int sock_create_kern(int family, int type, int proto,
	223	struct socket **res);
	224	extern int sock_create_lite(int family, int type, int proto,
	225	struct socket **res);
	226	extern void sock_release(struct socket *sock);
	227	extern int sock_sendmsg(struct socket sock, struct msghdr msg,
	228	size_t len);
	229	extern int sock_recvmsg(struct socket sock, struct msghdr msg,
	230	size_t size, int flags);
a677a039	231	extern int sock_map_fd(struct socket *sock, int flags);
1da177e4 LT	232	extern struct socket sockfd_lookup(int fd, int err);
	233	#define sockfd_put(sock) fput(sock->file)
	234	extern int net_ratelimit(void);
aaa248f6 SH	235
aaa248f6 SH	236	#define net_random() random32()
a64b78a0	237	#define net_srandom(seed) srandom32((__force u32)seed)
1da177e4 LT	238
	239	extern int kernel_sendmsg(struct socket sock, struct msghdr msg,
	240	struct kvec *vec, size_t num, size_t len);
	241	extern int kernel_recvmsg(struct socket sock, struct msghdr msg,
	242	struct kvec *vec, size_t num,
	243	size_t len, int flags);
	244
ac5a488e SS	245	extern int kernel_bind(struct socket sock, struct sockaddr addr,
	246	int addrlen);
	247	extern int kernel_listen(struct socket *sock, int backlog);
	248	extern int kernel_accept(struct socket sock, struct socket *newsock,
	249	int flags);
	250	extern int kernel_connect(struct socket sock, struct sockaddr addr,
	251	int addrlen, int flags);
	252	extern int kernel_getsockname(struct socket sock, struct sockaddr addr,
	253	int *addrlen);
	254	extern int kernel_getpeername(struct socket sock, struct sockaddr addr,
	255	int *addrlen);
	256	extern int kernel_getsockopt(struct socket *sock, int level, int optname,
	257	char optval, int optlen);
	258	extern int kernel_setsockopt(struct socket *sock, int level, int optname,
	259	char *optval, int optlen);
	260	extern int kernel_sendpage(struct socket sock, struct page page, int offset,
	261	size_t size, int flags);
	262	extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
91cf45f0 TM	263	extern int kernel_sock_shutdown(struct socket *sock,
91cf45f0 TM	264	enum sock_shutdown_cmd how);
ac5a488e	265
1da177e4 LT	266	#ifndef CONFIG_SMP
	267	#define SOCKOPS_WRAPPED(name) name
	268	#define SOCKOPS_WRAP(name, fam)
	269	#else
	270
	271	#define SOCKOPS_WRAPPED(name) __unlocked_##name
	272
	273	#define SOCKCALL_WRAP(name, call, parms, args) \
	274	static int __lock_##name##_##call parms \
	275	{ \
	276	int ret; \
	277	lock_kernel(); \
	278	ret = __unlocked_##name##_ops.call args ;\
	279	unlock_kernel(); \
	280	return ret; \
	281	}
	282
	283	#define SOCKCALL_UWRAP(name, call, parms, args) \
	284	static unsigned int __lock_##name##_##call parms \
	285	{ \
	286	int ret; \
	287	lock_kernel(); \
	288	ret = __unlocked_##name##_ops.call args ;\
	289	unlock_kernel(); \
	290	return ret; \
	291	}
	292
	293
	294	#define SOCKOPS_WRAP(name, fam) \
	295	SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
	296	SOCKCALL_WRAP(name, bind, (struct socket sock, struct sockaddr uaddr, int addr_len), \
	297	(sock, uaddr, addr_len)) \
	298	SOCKCALL_WRAP(name, connect, (struct socket sock, struct sockaddr uaddr, \
	299	int addr_len, int flags), \
	300	(sock, uaddr, addr_len, flags)) \
	301	SOCKCALL_WRAP(name, socketpair, (struct socket sock1, struct socket sock2), \
	302	(sock1, sock2)) \
	303	SOCKCALL_WRAP(name, accept, (struct socket sock, struct socket newsock, \
	304	int flags), (sock, newsock, flags)) \
	305	SOCKCALL_WRAP(name, getname, (struct socket sock, struct sockaddr uaddr, \
	306	int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
	307	SOCKCALL_UWRAP(name, poll, (struct file file, struct socket sock, struct poll_table_struct *wait), \
	308	(file, sock, wait)) \
	309	SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
	310	unsigned long arg), (sock, cmd, arg)) \
89bbfc95 SP	311	SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \
89bbfc95 SP	312	unsigned long arg), (sock, cmd, arg)) \
1da177e4 LT	313	SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
	314	SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
	315	SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
	316	char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
	317	SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
	318	char __user optval, int __user optlen), (sock, level, optname, optval, optlen)) \
	319	SOCKCALL_WRAP(name, sendmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len), \
	320	(iocb, sock, m, len)) \
	321	SOCKCALL_WRAP(name, recvmsg, (struct kiocb iocb, struct socket sock, struct msghdr *m, size_t len, int flags), \
	322	(iocb, sock, m, len, flags)) \
	323	SOCKCALL_WRAP(name, mmap, (struct file file, struct socket sock, struct vm_area_struct *vma), \
	324	(file, sock, vma)) \
	325	\
90ddc4f0	326	static const struct proto_ops name##_ops = { \
1da177e4 LT	327	.family = fam, \
	328	.owner = THIS_MODULE, \
	329	.release = __lock_##name##_release, \
	330	.bind = __lock_##name##_bind, \
	331	.connect = __lock_##name##_connect, \
	332	.socketpair = __lock_##name##_socketpair, \
	333	.accept = __lock_##name##_accept, \
	334	.getname = __lock_##name##_getname, \
	335	.poll = __lock_##name##_poll, \
	336	.ioctl = __lock_##name##_ioctl, \
89bbfc95	337	.compat_ioctl = __lock_##name##_compat_ioctl, \
1da177e4 LT	338	.listen = __lock_##name##_listen, \
	339	.shutdown = __lock_##name##_shutdown, \
	340	.setsockopt = __lock_##name##_setsockopt, \
	341	.getsockopt = __lock_##name##_getsockopt, \
	342	.sendmsg = __lock_##name##_sendmsg, \
	343	.recvmsg = __lock_##name##_recvmsg, \
	344	.mmap = __lock_##name##_mmap, \
	345	};
89bbfc95	346
1da177e4 LT	347	#endif
	348
	349	#define MODULE_ALIAS_NETPROTO(proto) \
	350	MODULE_ALIAS("net-pf-" __stringify(proto))
	351
4fdb3bb7 HW	352	#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
	353	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
	354
305e1e96 JD	355	#define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
	356	MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
	357	"-type-" __stringify(type))
	358
20380731 ACM	359	#ifdef CONFIG_SYSCTL
20380731 ACM	360	#include <linux/sysctl.h>
717115e1	361	extern struct ratelimit_state net_ratelimit_state;
20380731 ACM	362	#endif
20380731 ACM	363
1da177e4 LT	364	#endif /* __KERNEL__ */
1da177e4 LT	365	#endif /* _LINUX_NET_H */