/* * 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, * Ross Biro, * Fred N. van Kempen, * * 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 #include #include struct poll_table_struct; #define NPROTO 32 /* 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 */ #ifdef __KERNEL__ #define SOCK_ASYNC_NOSPACE 0 #define SOCK_ASYNC_WAITDATA 1 #define SOCK_NOSPACE 2 struct socket { socket_state state; unsigned long flags; struct proto_ops *ops; struct inode *inode; struct fasync_struct *fasync_list; /* Asynchronous wake up list */ struct file *file; /* File back pointer for gc */ struct sock *sk; wait_queue_head_t wait; short type; unsigned char passcred; }; #define SOCK_INODE(S) ((S)->inode) struct scm_cookie; struct vm_area_struct; struct page; struct proto_ops { int family; int (*release) (struct socket *sock); 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); unsigned int (*poll) (struct file *file, struct socket *sock, struct poll_table_struct *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 (*sendmsg) (struct socket *sock, struct msghdr *m, int total_len, struct scm_cookie *scm); int (*recvmsg) (struct socket *sock, struct msghdr *m, int total_len, int flags, struct scm_cookie *scm); int (*mmap) (struct file *file, struct socket *sock, struct vm_area_struct * vma); ssize_t (*sendpage) (struct socket *sock, struct page *page, int offset, size_t size, int flags); }; struct net_proto_family { int family; int (*create)(struct socket *sock, int protocol); /* These are counters for the number of different methods of each we support */ short authentication; short encryption; short encrypt_net; }; struct net_proto { const char *name; /* Protocol name */ void (*init_func)(struct net_proto *); /* Bootstrap */ }; extern int sock_wake_async(struct socket *sk, int how, int band); extern int sock_register(struct net_proto_family *fam); extern int sock_unregister(int family); extern struct socket *sock_alloc(void); extern int sock_create(int family, int type, int proto, struct socket **); extern void sock_release(struct socket *); extern int sock_sendmsg(struct socket *, struct msghdr *m, int len); extern int sock_recvmsg(struct socket *, struct msghdr *m, int len, int flags); extern int sock_readv_writev(int type, struct inode * inode, struct file * file, const struct iovec * iov, long count, long size); extern int net_ratelimit(void); extern unsigned long net_random(void); extern void net_srandom(unsigned long); #ifndef CONFIG_SMP #define SOCKOPS_WRAPPED(name) name #define SOCKOPS_WRAP(name, fam) #else #define SOCKOPS_WRAPPED(name) __unlocked_##name #define SOCKCALL_WRAP(name, call, parms, args) \ static int __lock_##name##_##call parms \ { \ int ret; \ lock_kernel(); \ ret = __unlocked_##name##_ops.call args ;\ unlock_kernel(); \ return ret; \ } #define SOCKCALL_UWRAP(name, call, parms, args) \ static unsigned int __lock_##name##_##call parms \ { \ int ret; \ lock_kernel(); \ ret = __unlocked_##name##_ops.call args ;\ unlock_kernel(); \ return ret; \ } #define SOCKOPS_WRAP(name, fam) \ SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \ SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \ (sock, uaddr, addr_len)) \ SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \ int addr_len, int flags), \ (sock, uaddr, addr_len, flags)) \ SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \ (sock1, sock2)) \ SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \ int flags), (sock, newsock, flags)) \ SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \ int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \ SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \ (file, sock, wait)) \ SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \ unsigned long arg), (sock, cmd, arg)) \ SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \ SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \ SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \ char *optval, int optlen), (sock, level, optname, optval, optlen)) \ SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \ char *optval, int *optlen), (sock, level, optname, optval, optlen)) \ SOCKCALL_WRAP(name, sendmsg, (struct socket *sock, struct msghdr *m, int len, struct scm_cookie *scm), \ (sock, m, len, scm)) \ SOCKCALL_WRAP(name, recvmsg, (struct socket *sock, struct msghdr *m, int len, int flags, struct scm_cookie *scm), \ (sock, m, len, flags, scm)) \ SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \ (file, sock, vma)) \ \ static struct proto_ops name##_ops = { \ family: fam, \ \ release: __lock_##name##_release, \ bind: __lock_##name##_bind, \ connect: __lock_##name##_connect, \ socketpair: __lock_##name##_socketpair, \ accept: __lock_##name##_accept, \ getname: __lock_##name##_getname, \ poll: __lock_##name##_poll, \ ioctl: __lock_##name##_ioctl, \ listen: __lock_##name##_listen, \ shutdown: __lock_##name##_shutdown, \ setsockopt: __lock_##name##_setsockopt, \ getsockopt: __lock_##name##_getsockopt, \ sendmsg: __lock_##name##_sendmsg, \ recvmsg: __lock_##name##_recvmsg, \ mmap: __lock_##name##_mmap, \ }; #endif #endif /* __KERNEL__ */ #endif /* _LINUX_NET_H */