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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [linux/] [net.h] - Blame information for rev 1765

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1 1275 phoenix 
/*
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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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126 
struct net_proto
127 
{
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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 struct socket *sockfd_lookup(int fd, int *err);
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144 
extern int      sock_map_fd(struct socket *sock);
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extern int      net_ratelimit(void);
146 
extern unsigned long net_random(void);
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extern void net_srandom(unsigned long);
148 
 
149 
#ifndef CONFIG_SMP
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#define SOCKOPS_WRAPPED(name) name
151 
#define SOCKOPS_WRAP(name, fam)
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#else
153 
 
154 
#define SOCKOPS_WRAPPED(name) __unlocked_##name
155 
 
156 
#define SOCKCALL_WRAP(name, call, parms, args)          \
157 
static int __lock_##name##_##call  parms                \
158 
{                                                       \
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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;                                     \
164 
}
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166 
#define SOCKCALL_UWRAP(name, call, parms, args)         \
167 
static unsigned int __lock_##name##_##call  parms       \
168 
{                                                       \
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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;                                     \
174 
}
175 
 
176 
 
177 
#define SOCKOPS_WRAP(name, fam)                                 \
178 
SOCKCALL_WRAP(name, release, (struct socket *sock), (sock))     \
179 
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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              \
207 
static struct proto_ops name##_ops = {                  \
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        family:         fam,                            \
209 
                                                        \
210 
        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,         \
219 
        shutdown:       __lock_##name##_shutdown,       \
220 
        setsockopt:     __lock_##name##_setsockopt,     \
221 
        getsockopt:     __lock_##name##_getsockopt,     \
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        sendmsg:        __lock_##name##_sendmsg,        \
223 
        recvmsg:        __lock_##name##_recvmsg,        \
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        mmap:           __lock_##name##_mmap,           \
225 
};
226 
#endif
227 
 
228 
 
229 
#endif /* __KERNEL__ */
230 
#endif  /* _LINUX_NET_H */

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