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jcastillo |
/*
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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/wait.h>
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#include <linux/socket.h>
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#define NPROTO 16 /* 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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#define SO_WAITDATA (1<<17) /* wait data to read */
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#define SO_NOSPACE (1<<18) /* no space to write */
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#ifdef __KERNEL__
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/*
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* Internal representation of a socket. not all the fields are used by
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* all configurations:
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*
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* server client
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* conn client connected to server connected to
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* iconn list of clients -unused-
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* awaiting connections
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* wait sleep for clients, sleep for connection,
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* sleep for i/o sleep for i/o
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*/
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struct socket {
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short type; /* SOCK_STREAM, ... */
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socket_state state;
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long flags;
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struct proto_ops *ops; /* protocols do most everything */
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void *data; /* protocol data */
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struct socket *conn; /* server socket connected to */
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struct socket *iconn; /* incomplete client conn.s */
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struct socket *next;
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struct wait_queue **wait; /* ptr to place to wait on */
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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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};
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#define SOCK_INODE(S) ((S)->inode)
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struct proto_ops {
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int family;
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int (*create) (struct socket *sock, int protocol);
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int (*dup) (struct socket *newsock, struct socket *oldsock);
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int (*release) (struct socket *sock, struct socket *peer);
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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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int (*select) (struct socket *sock, int sel_type,
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select_table *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 (*fcntl) (struct socket *sock, unsigned int cmd,
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unsigned long arg);
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int (*sendmsg) (struct socket *sock, struct msghdr *m, int total_len, int nonblock, int flags);
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int (*recvmsg) (struct socket *sock, struct msghdr *m, int total_len, int nonblock, int flags, int *addr_len);
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};
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struct net_proto {
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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 *sock, int how);
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extern int sock_register(int family, struct proto_ops *ops);
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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 void sock_release(struct socket *sock);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_NET_H */
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