229 lines
7.9 KiB
C
Executable File
229 lines
7.9 KiB
C
Executable File
/*
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* NET An implementation of the SOCKET network access protocol.
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* This is the master header file for the Linux NET layer,
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* or, in plain English: the networking handling part of the
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* kernel.
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*
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* Version: @(#)net.h 1.0.3 05/25/93
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*
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* Authors: Orest Zborowski, <obz@Kodak.COM>
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* Ross Biro, <bir7@leland.Stanford.Edu>
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_NET_H
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#define _LINUX_NET_H
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#include <linux/config.h>
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#include <linux/socket.h>
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#include <linux/wait.h>
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struct poll_table_struct;
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#define NPROTO 32 /* should be enough for now.. */
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#define SYS_SOCKET 1 /* sys_socket(2) */
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#define SYS_BIND 2 /* sys_bind(2) */
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#define SYS_CONNECT 3 /* sys_connect(2) */
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#define SYS_LISTEN 4 /* sys_listen(2) */
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#define SYS_ACCEPT 5 /* sys_accept(2) */
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#define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
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#define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
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#define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
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#define SYS_SEND 9 /* sys_send(2) */
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#define SYS_RECV 10 /* sys_recv(2) */
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#define SYS_SENDTO 11 /* sys_sendto(2) */
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#define SYS_RECVFROM 12 /* sys_recvfrom(2) */
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#define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
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#define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
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#define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
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#define SYS_SENDMSG 16 /* sys_sendmsg(2) */
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#define SYS_RECVMSG 17 /* sys_recvmsg(2) */
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typedef enum {
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SS_FREE = 0, /* not allocated */
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SS_UNCONNECTED, /* unconnected to any socket */
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SS_CONNECTING, /* in process of connecting */
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SS_CONNECTED, /* connected to socket */
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SS_DISCONNECTING /* in process of disconnecting */
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} socket_state;
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#define __SO_ACCEPTCON (1<<16) /* performed a listen */
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#ifdef __KERNEL__
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#define SOCK_ASYNC_NOSPACE 0
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#define SOCK_ASYNC_WAITDATA 1
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#define SOCK_NOSPACE 2
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struct socket
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{
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socket_state state;
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unsigned long flags;
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struct proto_ops *ops;
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struct inode *inode;
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struct fasync_struct *fasync_list; /* Asynchronous wake up list */
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struct file *file; /* File back pointer for gc */
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struct sock *sk;
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wait_queue_head_t wait;
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short type;
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unsigned char passcred;
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};
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#define SOCK_INODE(S) ((S)->inode)
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struct scm_cookie;
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struct vm_area_struct;
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struct page;
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struct proto_ops {
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int family;
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int (*release) (struct socket *sock);
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int (*bind) (struct socket *sock, struct sockaddr *umyaddr,
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int sockaddr_len);
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int (*connect) (struct socket *sock, struct sockaddr *uservaddr,
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int sockaddr_len, int flags);
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int (*socketpair) (struct socket *sock1, struct socket *sock2);
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int (*accept) (struct socket *sock, struct socket *newsock,
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int flags);
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int (*getname) (struct socket *sock, struct sockaddr *uaddr,
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int *usockaddr_len, int peer);
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unsigned int (*poll) (struct file *file, struct socket *sock, struct poll_table_struct *wait);
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int (*ioctl) (struct socket *sock, unsigned int cmd,
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unsigned long arg);
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int (*listen) (struct socket *sock, int len);
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int (*shutdown) (struct socket *sock, int flags);
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int (*setsockopt) (struct socket *sock, int level, int optname,
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char *optval, int optlen);
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int (*getsockopt) (struct socket *sock, int level, int optname,
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char *optval, int *optlen);
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int (*sendmsg) (struct socket *sock, struct msghdr *m, int total_len, struct scm_cookie *scm);
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int (*recvmsg) (struct socket *sock, struct msghdr *m, int total_len, int flags, struct scm_cookie *scm);
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int (*mmap) (struct file *file, struct socket *sock, struct vm_area_struct * vma);
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ssize_t (*sendpage) (struct socket *sock, struct page *page, int offset, size_t size, int flags);
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};
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struct net_proto_family
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{
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int family;
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int (*create)(struct socket *sock, int protocol);
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/* These are counters for the number of different methods of
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each we support */
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short authentication;
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short encryption;
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short encrypt_net;
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};
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struct net_proto
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{
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const char *name; /* Protocol name */
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void (*init_func)(struct net_proto *); /* Bootstrap */
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};
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extern int sock_wake_async(struct socket *sk, int how, int band);
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extern int sock_register(struct net_proto_family *fam);
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extern int sock_unregister(int family);
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extern struct socket *sock_alloc(void);
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extern int sock_create(int family, int type, int proto, struct socket **);
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extern void sock_release(struct socket *);
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extern int sock_sendmsg(struct socket *, struct msghdr *m, int len);
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extern int sock_recvmsg(struct socket *, struct msghdr *m, int len, int flags);
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extern int sock_readv_writev(int type, struct inode * inode, struct file * file,
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const struct iovec * iov, long count, long size);
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extern int net_ratelimit(void);
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extern unsigned long net_random(void);
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extern void net_srandom(unsigned long);
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#ifndef CONFIG_SMP
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#define SOCKOPS_WRAPPED(name) name
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#define SOCKOPS_WRAP(name, fam)
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#else
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#define SOCKOPS_WRAPPED(name) __unlocked_##name
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#define SOCKCALL_WRAP(name, call, parms, args) \
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static int __lock_##name##_##call parms \
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{ \
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int ret; \
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lock_kernel(); \
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ret = __unlocked_##name##_ops.call args ;\
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unlock_kernel(); \
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return ret; \
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}
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#define SOCKCALL_UWRAP(name, call, parms, args) \
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static unsigned int __lock_##name##_##call parms \
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{ \
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int ret; \
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lock_kernel(); \
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ret = __unlocked_##name##_ops.call args ;\
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unlock_kernel(); \
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return ret; \
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}
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#define SOCKOPS_WRAP(name, fam) \
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SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
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SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \
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(sock, uaddr, addr_len)) \
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SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \
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int addr_len, int flags), \
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(sock, uaddr, addr_len, flags)) \
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SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \
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(sock1, sock2)) \
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SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \
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int flags), (sock, newsock, flags)) \
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SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \
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int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
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SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \
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(file, sock, wait)) \
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SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
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unsigned long arg), (sock, cmd, arg)) \
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SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
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SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
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SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
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char *optval, int optlen), (sock, level, optname, optval, optlen)) \
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SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
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char *optval, int *optlen), (sock, level, optname, optval, optlen)) \
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SOCKCALL_WRAP(name, sendmsg, (struct socket *sock, struct msghdr *m, int len, struct scm_cookie *scm), \
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(sock, m, len, scm)) \
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SOCKCALL_WRAP(name, recvmsg, (struct socket *sock, struct msghdr *m, int len, int flags, struct scm_cookie *scm), \
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(sock, m, len, flags, scm)) \
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SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \
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(file, sock, vma)) \
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\
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static struct proto_ops name##_ops = { \
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family: fam, \
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\
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release: __lock_##name##_release, \
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bind: __lock_##name##_bind, \
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connect: __lock_##name##_connect, \
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socketpair: __lock_##name##_socketpair, \
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accept: __lock_##name##_accept, \
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getname: __lock_##name##_getname, \
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poll: __lock_##name##_poll, \
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ioctl: __lock_##name##_ioctl, \
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listen: __lock_##name##_listen, \
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shutdown: __lock_##name##_shutdown, \
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setsockopt: __lock_##name##_setsockopt, \
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getsockopt: __lock_##name##_getsockopt, \
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sendmsg: __lock_##name##_sendmsg, \
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recvmsg: __lock_##name##_recvmsg, \
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mmap: __lock_##name##_mmap, \
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};
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#endif
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#endif /* __KERNEL__ */
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#endif /* _LINUX_NET_H */
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