2 * NET An implementation of the SOCKET network access protocol.
3 * This is the master header file for the Linux NET layer,
4 * or, in plain English: the networking handling part of the
7 * Version: @(#)net.h 1.0.3 05/25/93
9 * Authors: Orest Zborowski, <obz@Kodak.COM>
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
21 #include <linux/wait.h>
22 #include <asm/socket.h>
24 struct poll_table_struct
;
25 struct pipe_inode_info
;
29 #define NPROTO 34 /* should be enough for now.. */
31 #define SYS_SOCKET 1 /* sys_socket(2) */
32 #define SYS_BIND 2 /* sys_bind(2) */
33 #define SYS_CONNECT 3 /* sys_connect(2) */
34 #define SYS_LISTEN 4 /* sys_listen(2) */
35 #define SYS_ACCEPT 5 /* sys_accept(2) */
36 #define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
37 #define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
38 #define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
39 #define SYS_SEND 9 /* sys_send(2) */
40 #define SYS_RECV 10 /* sys_recv(2) */
41 #define SYS_SENDTO 11 /* sys_sendto(2) */
42 #define SYS_RECVFROM 12 /* sys_recvfrom(2) */
43 #define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
44 #define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
45 #define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
46 #define SYS_SENDMSG 16 /* sys_sendmsg(2) */
47 #define SYS_RECVMSG 17 /* sys_recvmsg(2) */
50 SS_FREE
= 0, /* not allocated */
51 SS_UNCONNECTED
, /* unconnected to any socket */
52 SS_CONNECTING
, /* in process of connecting */
53 SS_CONNECTED
, /* connected to socket */
54 SS_DISCONNECTING
/* in process of disconnecting */
57 #define __SO_ACCEPTCON (1 << 16) /* performed a listen */
60 #include <linux/stringify.h>
61 #include <linux/random.h>
63 #define SOCK_ASYNC_NOSPACE 0
64 #define SOCK_ASYNC_WAITDATA 1
65 #define SOCK_NOSPACE 2
66 #define SOCK_PASSCRED 3
67 #define SOCK_PASSSEC 4
69 #ifndef ARCH_HAS_SOCKET_TYPES
71 * enum sock_type - Socket types
72 * @SOCK_STREAM: stream (connection) socket
73 * @SOCK_DGRAM: datagram (conn.less) socket
74 * @SOCK_RAW: raw socket
75 * @SOCK_RDM: reliably-delivered message
76 * @SOCK_SEQPACKET: sequential packet socket
77 * @SOCK_DCCP: Datagram Congestion Control Protocol socket
78 * @SOCK_PACKET: linux specific way of getting packets at the dev level.
79 * For writing rarp and other similar things on the user level.
81 * When adding some new socket type please
82 * grep ARCH_HAS_SOCKET_TYPE include/asm-* /socket.h, at least MIPS
83 * overrides this enum for binary compat reasons.
95 #define SOCK_MAX (SOCK_PACKET + 1)
97 #endif /* ARCH_HAS_SOCKET_TYPES */
99 enum sock_shutdown_cmd
{
106 * struct socket - general BSD socket
107 * @state: socket state (%SS_CONNECTED, etc)
108 * @flags: socket flags (%SOCK_ASYNC_NOSPACE, etc)
109 * @ops: protocol specific socket operations
110 * @fasync_list: Asynchronous wake up list
111 * @file: File back pointer for gc
112 * @sk: internal networking protocol agnostic socket representation
113 * @wait: wait queue for several uses
114 * @type: socket type (%SOCK_STREAM, etc)
119 const struct proto_ops
*ops
;
120 struct fasync_struct
*fasync_list
;
123 wait_queue_head_t wait
;
127 struct vm_area_struct
;
136 struct module
*owner
;
137 int (*release
) (struct socket
*sock
);
138 int (*bind
) (struct socket
*sock
,
139 struct sockaddr
*myaddr
,
141 int (*connect
) (struct socket
*sock
,
142 struct sockaddr
*vaddr
,
143 int sockaddr_len
, int flags
);
144 int (*socketpair
)(struct socket
*sock1
,
145 struct socket
*sock2
);
146 int (*accept
) (struct socket
*sock
,
147 struct socket
*newsock
, int flags
);
148 int (*getname
) (struct socket
*sock
,
149 struct sockaddr
*addr
,
150 int *sockaddr_len
, int peer
);
151 unsigned int (*poll
) (struct file
*file
, struct socket
*sock
,
152 struct poll_table_struct
*wait
);
153 int (*ioctl
) (struct socket
*sock
, unsigned int cmd
,
155 int (*compat_ioctl
) (struct socket
*sock
, unsigned int cmd
,
157 int (*listen
) (struct socket
*sock
, int len
);
158 int (*shutdown
) (struct socket
*sock
, int flags
);
159 int (*setsockopt
)(struct socket
*sock
, int level
,
160 int optname
, char __user
*optval
, int optlen
);
161 int (*getsockopt
)(struct socket
*sock
, int level
,
162 int optname
, char __user
*optval
, int __user
*optlen
);
163 int (*compat_setsockopt
)(struct socket
*sock
, int level
,
164 int optname
, char __user
*optval
, int optlen
);
165 int (*compat_getsockopt
)(struct socket
*sock
, int level
,
166 int optname
, char __user
*optval
, int __user
*optlen
);
167 int (*sendmsg
) (struct kiocb
*iocb
, struct socket
*sock
,
168 struct msghdr
*m
, size_t total_len
);
169 int (*recvmsg
) (struct kiocb
*iocb
, struct socket
*sock
,
170 struct msghdr
*m
, size_t total_len
,
172 int (*mmap
) (struct file
*file
, struct socket
*sock
,
173 struct vm_area_struct
* vma
);
174 ssize_t (*sendpage
) (struct socket
*sock
, struct page
*page
,
175 int offset
, size_t size
, int flags
);
176 ssize_t (*splice_read
)(struct socket
*sock
, loff_t
*ppos
,
177 struct pipe_inode_info
*pipe
, size_t len
, unsigned int flags
);
180 struct net_proto_family
{
182 int (*create
)(struct net
*net
, struct socket
*sock
, int protocol
);
183 struct module
*owner
;
189 extern int sock_wake_async(struct socket
*sk
, int how
, int band
);
190 extern int sock_register(const struct net_proto_family
*fam
);
191 extern void sock_unregister(int family
);
192 extern int sock_create(int family
, int type
, int proto
,
193 struct socket
**res
);
194 extern int sock_create_kern(int family
, int type
, int proto
,
195 struct socket
**res
);
196 extern int sock_create_lite(int family
, int type
, int proto
,
197 struct socket
**res
);
198 extern void sock_release(struct socket
*sock
);
199 extern int sock_sendmsg(struct socket
*sock
, struct msghdr
*msg
,
201 extern int sock_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
202 size_t size
, int flags
);
203 extern int sock_map_fd(struct socket
*sock
);
204 extern struct socket
*sockfd_lookup(int fd
, int *err
);
205 #define sockfd_put(sock) fput(sock->file)
206 extern int net_ratelimit(void);
208 #define net_random() random32()
209 #define net_srandom(seed) srandom32((__force u32)seed)
211 extern int kernel_sendmsg(struct socket
*sock
, struct msghdr
*msg
,
212 struct kvec
*vec
, size_t num
, size_t len
);
213 extern int kernel_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
214 struct kvec
*vec
, size_t num
,
215 size_t len
, int flags
);
217 extern int kernel_bind(struct socket
*sock
, struct sockaddr
*addr
,
219 extern int kernel_listen(struct socket
*sock
, int backlog
);
220 extern int kernel_accept(struct socket
*sock
, struct socket
**newsock
,
222 extern int kernel_connect(struct socket
*sock
, struct sockaddr
*addr
,
223 int addrlen
, int flags
);
224 extern int kernel_getsockname(struct socket
*sock
, struct sockaddr
*addr
,
226 extern int kernel_getpeername(struct socket
*sock
, struct sockaddr
*addr
,
228 extern int kernel_getsockopt(struct socket
*sock
, int level
, int optname
,
229 char *optval
, int *optlen
);
230 extern int kernel_setsockopt(struct socket
*sock
, int level
, int optname
,
231 char *optval
, int optlen
);
232 extern int kernel_sendpage(struct socket
*sock
, struct page
*page
, int offset
,
233 size_t size
, int flags
);
234 extern int kernel_sock_ioctl(struct socket
*sock
, int cmd
, unsigned long arg
);
235 extern int kernel_sock_shutdown(struct socket
*sock
,
236 enum sock_shutdown_cmd how
);
239 #define SOCKOPS_WRAPPED(name) name
240 #define SOCKOPS_WRAP(name, fam)
243 #define SOCKOPS_WRAPPED(name) __unlocked_##name
245 #define SOCKCALL_WRAP(name, call, parms, args) \
246 static int __lock_##name##_##call parms \
250 ret = __unlocked_##name##_ops.call args ;\
255 #define SOCKCALL_UWRAP(name, call, parms, args) \
256 static unsigned int __lock_##name##_##call parms \
260 ret = __unlocked_##name##_ops.call args ;\
266 #define SOCKOPS_WRAP(name, fam) \
267 SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
268 SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \
269 (sock, uaddr, addr_len)) \
270 SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \
271 int addr_len, int flags), \
272 (sock, uaddr, addr_len, flags)) \
273 SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \
275 SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \
276 int flags), (sock, newsock, flags)) \
277 SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \
278 int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
279 SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \
280 (file, sock, wait)) \
281 SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
282 unsigned long arg), (sock, cmd, arg)) \
283 SOCKCALL_WRAP(name, compat_ioctl, (struct socket *sock, unsigned int cmd, \
284 unsigned long arg), (sock, cmd, arg)) \
285 SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
286 SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
287 SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
288 char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
289 SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
290 char __user *optval, int __user *optlen), (sock, level, optname, optval, optlen)) \
291 SOCKCALL_WRAP(name, sendmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len), \
292 (iocb, sock, m, len)) \
293 SOCKCALL_WRAP(name, recvmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags), \
294 (iocb, sock, m, len, flags)) \
295 SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \
298 static const struct proto_ops name##_ops = { \
300 .owner = THIS_MODULE, \
301 .release = __lock_##name##_release, \
302 .bind = __lock_##name##_bind, \
303 .connect = __lock_##name##_connect, \
304 .socketpair = __lock_##name##_socketpair, \
305 .accept = __lock_##name##_accept, \
306 .getname = __lock_##name##_getname, \
307 .poll = __lock_##name##_poll, \
308 .ioctl = __lock_##name##_ioctl, \
309 .compat_ioctl = __lock_##name##_compat_ioctl, \
310 .listen = __lock_##name##_listen, \
311 .shutdown = __lock_##name##_shutdown, \
312 .setsockopt = __lock_##name##_setsockopt, \
313 .getsockopt = __lock_##name##_getsockopt, \
314 .sendmsg = __lock_##name##_sendmsg, \
315 .recvmsg = __lock_##name##_recvmsg, \
316 .mmap = __lock_##name##_mmap, \
321 #define MODULE_ALIAS_NETPROTO(proto) \
322 MODULE_ALIAS("net-pf-" __stringify(proto))
324 #define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
325 MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
327 #define MODULE_ALIAS_NET_PF_PROTO_TYPE(pf, proto, type) \
328 MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto) \
329 "-type-" __stringify(type))
332 #include <linux/sysctl.h>
333 extern ctl_table net_table
[];
334 extern int net_msg_cost
;
335 extern int net_msg_burst
;
338 #endif /* __KERNEL__ */
339 #endif /* _LINUX_NET_H */