net h (2)


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, <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/wait.h> #include <linux/socket.h> #define NPROTO 16 /* 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 */ #define SO_WAITDATA (1<<17) /* wait data to read */ #define SO_NOSPACE (1<<18) /* no space to write */ #ifdef __KERNEL__ /* * Internal representation of a socket. not all the fields are used by * all configurations: * * server client * conn client connected to server connected to * iconn list of clients -unused- * awaiting connections * wait sleep for clients, sleep for connection, * sleep for i/o sleep for i/o */ struct socket { short type; /* SOCK_STREAM, ... */ socket_state state; long flags; struct proto_ops *ops; /* protocols do most everything */ void *data; /* protocol data */ struct socket *conn; /* server socket connected to */ struct socket *iconn; /* incomplete client conn.s */ struct socket *next; struct wait_queue **wait; /* ptr to place to wait on */ struct inode *inode; struct fasync_struct *fasync_list; /* Asynchronous wake up list */ struct file *file; /* File back pointer for gc */ }; #define SOCK_INODE(S) ((S)->inode) struct proto_ops { int family; int (*create) (struct socket *sock, int protocol); int (*dup) (struct socket *newsock, struct socket *oldsock); int (*release) (struct socket *sock, struct socket *peer); 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); int (*select) (struct socket *sock, int sel_type, select_table *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 (*fcntl) (struct socket *sock, unsigned int cmd, unsigned long arg); int (*sendmsg) (struct socket *sock, struct msghdr *m, int total_len, int nonblock, int flags); int (*recvmsg) (struct socket *sock, struct msghdr *m, int total_len, int nonblock, int flags, int *addr_len); }; struct net_proto { const char *name; /* Protocol name */ void (*init_func)(struct net_proto *); /* Bootstrap */ }; extern int sock_wake_async(struct socket *sock, int how); extern int sock_register(int family, struct proto_ops *ops); extern int sock_unregister(int family); extern struct socket *sock_alloc(void); extern void sock_release(struct socket *sock); #endif /* __KERNEL__ */ #endif /* _LINUX_NET_H */ [6~

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