| /* |
| * 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 |
| * 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/config.h> |
| #include <linux/wait.h> |
| #include <linux/stringify.h> |
| #include <asm/socket.h> |
| |
| struct poll_table_struct; |
| struct inode; |
| |
| #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 |
| #define SOCK_PASSCRED 3 |
| |
| #ifndef ARCH_HAS_SOCKET_TYPES |
| /** |
| * enum sock_type - Socket types |
| * @SOCK_STREAM: stream (connection) socket |
| * @SOCK_DGRAM: datagram (conn.less) socket |
| * @SOCK_RAW: raw socket |
| * @SOCK_RDM: reliably-delivered message |
| * @SOCK_SEQPACKET: sequential packet socket |
| * @SOCK_DCCP: Datagram Congestion Control Protocol socket |
| * @SOCK_PACKET: linux specific way of getting packets at the dev level. |
| * For writing rarp and other similar things on the user level. |
| * |
| * When adding some new socket type please |
| * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS |
| * overrides this enum for binary compat reasons. |
| */ |
| enum sock_type { |
| SOCK_STREAM = 1, |
| SOCK_DGRAM = 2, |
| SOCK_RAW = 3, |
| SOCK_RDM = 4, |
| SOCK_SEQPACKET = 5, |
| SOCK_DCCP = 6, |
| SOCK_PACKET = 10, |
| }; |
| |
| #define SOCK_MAX (SOCK_PACKET + 1) |
| |
| #endif /* ARCH_HAS_SOCKET_TYPES */ |
| |
| /** |
| * struct socket - general BSD socket |
| * @state: socket state (%SS_CONNECTED, etc) |
| * @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc) |
| * @ops: protocol specific socket operations |
| * @fasync_list: Asynchronous wake up list |
| * @file: File back pointer for gc |
| * @sk: internal networking protocol agnostic socket representation |
| * @wait: wait queue for several uses |
| * @type: socket type (%SOCK_STREAM, etc) |
| */ |
| struct socket { |
| socket_state state; |
| unsigned long flags; |
| const struct proto_ops *ops; |
| struct fasync_struct *fasync_list; |
| struct file *file; |
| struct sock *sk; |
| wait_queue_head_t wait; |
| short type; |
| }; |
| |
| struct vm_area_struct; |
| struct page; |
| struct kiocb; |
| struct sockaddr; |
| struct msghdr; |
| struct module; |
| |
| struct proto_ops { |
| int family; |
| struct module *owner; |
| int (*release) (struct socket *sock); |
| int (*bind) (struct socket *sock, |
| struct sockaddr *myaddr, |
| int sockaddr_len); |
| int (*connect) (struct socket *sock, |
| struct sockaddr *vaddr, |
| 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 *addr, |
| int *sockaddr_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 __user *optval, int optlen); |
| int (*getsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, int __user *optlen); |
| int (*compat_setsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, int optlen); |
| int (*compat_getsockopt)(struct socket *sock, int level, |
| int optname, char __user *optval, int __user *optlen); |
| int (*sendmsg) (struct kiocb *iocb, struct socket *sock, |
| struct msghdr *m, size_t total_len); |
| int (*recvmsg) (struct kiocb *iocb, struct socket *sock, |
| struct msghdr *m, size_t total_len, |
| int flags); |
| 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 module *owner; |
| }; |
| |
| struct iovec; |
| struct kvec; |
| |
| 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 int sock_create(int family, int type, int proto, |
| struct socket **res); |
| extern int sock_create_kern(int family, int type, int proto, |
| struct socket **res); |
| extern int sock_create_lite(int family, int type, int proto, |
| struct socket **res); |
| extern void sock_release(struct socket *sock); |
| extern int sock_sendmsg(struct socket *sock, struct msghdr *msg, |
| size_t len); |
| extern int sock_recvmsg(struct socket *sock, struct msghdr *msg, |
| size_t size, int flags); |
| extern int sock_map_fd(struct socket *sock); |
| extern struct socket *sockfd_lookup(int fd, int *err); |
| #define sockfd_put(sock) fput(sock->file) |
| extern int net_ratelimit(void); |
| extern unsigned long net_random(void); |
| extern void net_srandom(unsigned long); |
| extern void net_random_init(void); |
| |
| extern int kernel_sendmsg(struct socket *sock, struct msghdr *msg, |
| struct kvec *vec, size_t num, size_t len); |
| extern int kernel_recvmsg(struct socket *sock, struct msghdr *msg, |
| struct kvec *vec, size_t num, |
| size_t len, int flags); |
| |
| #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 __user *optval, int optlen), (sock, level, optname, optval, optlen)) \ |
| SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \ |
| char __user *optval, int __user *optlen), (sock, level, optname, optval, optlen)) \ |
| SOCKCALL_WRAP(name, sendmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len), \ |
| (iocb, sock, m, len)) \ |
| SOCKCALL_WRAP(name, recvmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags), \ |
| (iocb, sock, m, len, flags)) \ |
| SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \ |
| (file, sock, vma)) \ |
| \ |
| static const struct proto_ops name##_ops = { \ |
| .family = fam, \ |
| .owner = THIS_MODULE, \ |
| .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 |
| |
| #define MODULE_ALIAS_NETPROTO(proto) \ |
| MODULE_ALIAS("net-pf-" __stringify(proto)) |
| |
| #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \ |
| MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto)) |
| |
| #ifdef CONFIG_SYSCTL |
| #include <linux/sysctl.h> |
| extern ctl_table net_table[]; |
| extern int net_msg_cost; |
| extern int net_msg_burst; |
| #endif |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _LINUX_NET_H */ |