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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* * 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 NSOCKETS 128 /* should be dynamic, later... */ #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) */ 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 */ /* * Internel 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; }; #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 (*read) (struct socket *sock, char *ubuf, int size, int nonblock); int (*write) (struct socket *sock, char *ubuf, int size, int nonblock); 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 (*send) (struct socket *sock, void *buff, int len, int nonblock, unsigned flags); int (*recv) (struct socket *sock, void *buff, int len, int nonblock, unsigned flags); int (*sendto) (struct socket *sock, void *buff, int len, int nonblock, unsigned flags, struct sockaddr *, int addr_len); int (*recvfrom) (struct socket *sock, void *buff, int len, int nonblock, unsigned flags, struct sockaddr *, int *addr_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); }; extern int sock_awaitconn(struct socket *mysock, struct socket *servsock); extern int sock_register(int family, struct proto_ops *ops); #endif /* _LINUX_NET_H */ |