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/*
* 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, <bir7@leland.Stanford.Edu>
* 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/config.h>
#include <linux/socket.h>
#include <linux/wait.h>
struct poll_table_struct;
#define NPROTO 32 /* 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__
#define SOCK_ASYNC_NOSPACE 0
#define SOCK_ASYNC_WAITDATA 1
#define SOCK_NOSPACE 2
struct socket
{
socket_state state;
unsigned long flags;
struct proto_ops *ops;
struct inode *inode;
struct fasync_struct *fasync_list; /* Asynchronous wake up list */
struct file *file; /* File back pointer for gc */
struct sock *sk;
wait_queue_head_t wait;
short type;
unsigned char passcred;
};
#define SOCK_INODE(S) ((S)->inode)
struct scm_cookie;
struct vm_area_struct;
struct proto_ops {
int family;
int (*release) (struct socket *sock);
int (*bind) (struct socket *sock, struct sockaddr *umyaddr,
int sockaddr_len);
int (*connect) (struct socket *sock, struct sockaddr *uservaddr,
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 *uaddr,
int *usockaddr_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 (*listen) (struct socket *sock, int len);
int (*shutdown) (struct socket *sock, int flags);
int (*setsockopt) (struct socket *sock, int level, int optname,
char *optval, int optlen);
int (*getsockopt) (struct socket *sock, int level, int optname,
char *optval, int *optlen);
int (*sendmsg) (struct socket *sock, struct msghdr *m, int total_len, struct scm_cookie *scm);
int (*recvmsg) (struct socket *sock, struct msghdr *m, int total_len, int flags, struct scm_cookie *scm);
int (*mmap) (struct file *file, struct socket *sock, struct vm_area_struct * vma);
};
struct net_proto_family
{
int family;
int (*create)(struct socket *sock, int protocol);
/* These are counters for the number of different methods of
each we support */
short authentication;
short encryption;
short encrypt_net;
};
struct net_proto
{
const char *name; /* Protocol name */
void (*init_func)(struct net_proto *); /* Bootstrap */
};
extern int sock_wake_async(struct socket *sk, int how, int band);
extern int sock_register(struct net_proto_family *fam);
extern int sock_unregister(int family);
extern struct socket *sock_alloc(void);
extern int sock_create(int family, int type, int proto, struct socket **);
extern void sock_release(struct socket *);
extern int sock_sendmsg(struct socket *, struct msghdr *m, int len);
extern int sock_recvmsg(struct socket *, struct msghdr *m, int len, int flags);
extern int sock_readv_writev(int type, struct inode * inode, struct file * file,
const struct iovec * iov, long count, long size);
extern int net_ratelimit(void);
extern unsigned long net_random(void);
extern void net_srandom(unsigned long);
#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, 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 *optval, int optlen), (sock, level, optname, optval, optlen)) \
SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
char *optval, int *optlen), (sock, level, optname, optval, optlen)) \
SOCKCALL_WRAP(name, sendmsg, (struct socket *sock, struct msghdr *m, int len, struct scm_cookie *scm), \
(sock, m, len, scm)) \
SOCKCALL_WRAP(name, recvmsg, (struct socket *sock, struct msghdr *m, int len, int flags, struct scm_cookie *scm), \
(sock, m, len, flags, scm)) \
SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \
(file, sock, vma)) \
\
static struct proto_ops name##_ops = { \
family: fam, \
\
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, \
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
#endif /* __KERNEL__ */
#endif /* _LINUX_NET_H */
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