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>
10 * Ross Biro, <bir7@leland.Stanford.Edu>
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/config.h>
22 #include <linux/wait.h>
23 #include <linux/stringify.h>
25 struct poll_table_struct;
28 #define NPROTO 32 /* should be enough for now.. */
30 #define SYS_SOCKET 1 /* sys_socket(2) */
31 #define SYS_BIND 2 /* sys_bind(2) */
32 #define SYS_CONNECT 3 /* sys_connect(2) */
33 #define SYS_LISTEN 4 /* sys_listen(2) */
34 #define SYS_ACCEPT 5 /* sys_accept(2) */
35 #define SYS_GETSOCKNAME 6 /* sys_getsockname(2) */
36 #define SYS_GETPEERNAME 7 /* sys_getpeername(2) */
37 #define SYS_SOCKETPAIR 8 /* sys_socketpair(2) */
38 #define SYS_SEND 9 /* sys_send(2) */
39 #define SYS_RECV 10 /* sys_recv(2) */
40 #define SYS_SENDTO 11 /* sys_sendto(2) */
41 #define SYS_RECVFROM 12 /* sys_recvfrom(2) */
42 #define SYS_SHUTDOWN 13 /* sys_shutdown(2) */
43 #define SYS_SETSOCKOPT 14 /* sys_setsockopt(2) */
44 #define SYS_GETSOCKOPT 15 /* sys_getsockopt(2) */
45 #define SYS_SENDMSG 16 /* sys_sendmsg(2) */
46 #define SYS_RECVMSG 17 /* sys_recvmsg(2) */
49 SS_FREE = 0, /* not allocated */
50 SS_UNCONNECTED, /* unconnected to any socket */
51 SS_CONNECTING, /* in process of connecting */
52 SS_CONNECTED, /* connected to socket */
53 SS_DISCONNECTING /* in process of disconnecting */
56 #define __SO_ACCEPTCON (1 << 16) /* performed a listen */
60 #define SOCK_ASYNC_NOSPACE 0
61 #define SOCK_ASYNC_WAITDATA 1
62 #define SOCK_NOSPACE 2
63 #define SOCK_PASS_CRED 16
64 #define SOCK_USER_SOCKET 17
67 * struct socket - general BSD socket
68 * @state - socket state (%SS_CONNECTED, etc)
69 * @flags - socket flags (%SOCK_ASYNC_NOSPACE, etc)
70 * @ops - protocol specific socket operations
71 * @fasync_list - Asynchronous wake up list
72 * @file - File back pointer for gc
73 * @sk - internal networking protocol agnostic socket representation
74 * @wait - wait queue for several uses
75 * @type - socket type (%SOCK_STREAM, etc)
76 * @passcred - credentials (used only in Unix Sockets (aka PF_LOCAL))
81 struct proto_ops *ops;
82 struct fasync_struct *fasync_list;
85 wait_queue_head_t wait;
89 struct vm_area_struct;
99 int (*release) (struct socket *sock);
100 int (*bind) (struct socket *sock,
101 struct sockaddr *myaddr,
103 int (*connect) (struct socket *sock,
104 struct sockaddr *vaddr,
105 int sockaddr_len, int flags);
106 int (*socketpair)(struct socket *sock1,
107 struct socket *sock2);
108 int (*accept) (struct socket *sock,
109 struct socket *newsock, int flags);
110 int (*getname) (struct socket *sock,
111 struct sockaddr *addr,
112 int *sockaddr_len, int peer);
113 unsigned int (*poll) (struct file *file, struct socket *sock,
114 struct poll_table_struct *wait);
115 int (*ioctl) (struct socket *sock, unsigned int cmd,
117 int (*listen) (struct socket *sock, int len);
118 int (*shutdown) (struct socket *sock, int flags);
119 int (*setsockopt)(struct socket *sock, int level,
120 int optname, char __user *optval, int optlen);
121 int (*getsockopt)(struct socket *sock, int level,
122 int optname, char __user *optval, int __user *optlen);
123 int (*sendmsg) (struct kiocb *iocb, struct socket *sock,
124 struct msghdr *m, size_t total_len);
125 int (*recvmsg) (struct kiocb *iocb, struct socket *sock,
126 struct msghdr *m, size_t total_len,
128 int (*mmap) (struct file *file, struct socket *sock,
129 struct vm_area_struct * vma);
130 ssize_t (*sendpage) (struct socket *sock, struct page *page,
131 int offset, size_t size, int flags);
134 struct net_proto_family {
136 int (*create)(struct socket *sock, int protocol);
137 /* These are counters for the number of different methods of
139 short authentication;
142 struct module *owner;
148 extern int sock_wake_async(struct socket *sk, int how, int band);
149 extern int sock_register(struct net_proto_family *fam);
150 extern int sock_unregister(int family);
151 extern struct socket *sock_alloc(void);
152 extern int sock_create(int family, int type, int proto,
153 struct socket **res);
154 extern int sock_create_kern(int family, int type, int proto,
155 struct socket **res);
156 extern int sock_create_lite(int family, int type, int proto,
157 struct socket **res);
158 extern void sock_release(struct socket *sock);
159 extern int sock_sendmsg(struct socket *sock, struct msghdr *msg,
161 extern int sock_recvmsg(struct socket *sock, struct msghdr *msg,
162 size_t size, int flags);
163 extern int sock_readv_writev(int type, struct inode *inode,
165 const struct iovec *iov, long count,
167 extern int sock_map_fd(struct socket *sock);
168 extern struct socket *sockfd_lookup(int fd, int *err);
169 #define sockfd_put(sock) fput(sock->file)
170 extern int net_ratelimit(void);
171 extern unsigned long net_random(void);
172 extern void net_srandom(unsigned long);
174 extern int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
175 struct kvec *vec, size_t num, size_t len);
176 extern int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
177 struct kvec *vec, size_t num,
178 size_t len, int flags);
181 #define SOCKOPS_WRAPPED(name) name
182 #define SOCKOPS_WRAP(name, fam)
185 #define SOCKOPS_WRAPPED(name) __unlocked_##name
187 #define SOCKCALL_WRAP(name, call, parms, args) \
188 static int __lock_##name##_##call parms \
192 ret = __unlocked_##name##_ops.call args ;\
197 #define SOCKCALL_UWRAP(name, call, parms, args) \
198 static unsigned int __lock_##name##_##call parms \
202 ret = __unlocked_##name##_ops.call args ;\
208 #define SOCKOPS_WRAP(name, fam) \
209 SOCKCALL_WRAP(name, release, (struct socket *sock), (sock)) \
210 SOCKCALL_WRAP(name, bind, (struct socket *sock, struct sockaddr *uaddr, int addr_len), \
211 (sock, uaddr, addr_len)) \
212 SOCKCALL_WRAP(name, connect, (struct socket *sock, struct sockaddr * uaddr, \
213 int addr_len, int flags), \
214 (sock, uaddr, addr_len, flags)) \
215 SOCKCALL_WRAP(name, socketpair, (struct socket *sock1, struct socket *sock2), \
217 SOCKCALL_WRAP(name, accept, (struct socket *sock, struct socket *newsock, \
218 int flags), (sock, newsock, flags)) \
219 SOCKCALL_WRAP(name, getname, (struct socket *sock, struct sockaddr *uaddr, \
220 int *addr_len, int peer), (sock, uaddr, addr_len, peer)) \
221 SOCKCALL_UWRAP(name, poll, (struct file *file, struct socket *sock, struct poll_table_struct *wait), \
222 (file, sock, wait)) \
223 SOCKCALL_WRAP(name, ioctl, (struct socket *sock, unsigned int cmd, \
224 unsigned long arg), (sock, cmd, arg)) \
225 SOCKCALL_WRAP(name, listen, (struct socket *sock, int len), (sock, len)) \
226 SOCKCALL_WRAP(name, shutdown, (struct socket *sock, int flags), (sock, flags)) \
227 SOCKCALL_WRAP(name, setsockopt, (struct socket *sock, int level, int optname, \
228 char __user *optval, int optlen), (sock, level, optname, optval, optlen)) \
229 SOCKCALL_WRAP(name, getsockopt, (struct socket *sock, int level, int optname, \
230 char __user *optval, int __user *optlen), (sock, level, optname, optval, optlen)) \
231 SOCKCALL_WRAP(name, sendmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len), \
232 (iocb, sock, m, len)) \
233 SOCKCALL_WRAP(name, recvmsg, (struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags), \
234 (iocb, sock, m, len, flags)) \
235 SOCKCALL_WRAP(name, mmap, (struct file *file, struct socket *sock, struct vm_area_struct *vma), \
238 static struct proto_ops name##_ops = { \
240 .owner = THIS_MODULE, \
241 .release = __lock_##name##_release, \
242 .bind = __lock_##name##_bind, \
243 .connect = __lock_##name##_connect, \
244 .socketpair = __lock_##name##_socketpair, \
245 .accept = __lock_##name##_accept, \
246 .getname = __lock_##name##_getname, \
247 .poll = __lock_##name##_poll, \
248 .ioctl = __lock_##name##_ioctl, \
249 .listen = __lock_##name##_listen, \
250 .shutdown = __lock_##name##_shutdown, \
251 .setsockopt = __lock_##name##_setsockopt, \
252 .getsockopt = __lock_##name##_getsockopt, \
253 .sendmsg = __lock_##name##_sendmsg, \
254 .recvmsg = __lock_##name##_recvmsg, \
255 .mmap = __lock_##name##_mmap, \
259 #define MODULE_ALIAS_NETPROTO(proto) \
260 MODULE_ALIAS("net-pf-" __stringify(proto))
262 #endif /* __KERNEL__ */
263 #endif /* _LINUX_NET_H */