1/*
2 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*!
29 * @header init.h
30 * This header defines an API to register a function that will be called when
31 * the network stack is being initialized. This gives a kernel extensions an
32 * opportunity to install filters before sockets are created and network
33 * operations occur.
34 */
35#ifndef _NET_INIT_H_
36#define _NET_INIT_H_
37#include <sys/kernel_types.h>
38
39/*!
40 * @typedef net_init_func_ptr
41 * @discussion net_init_func_ptr will be called once the networking stack
42 * initialized and before network operations occur.
43 */
44typedef void (*net_init_func_ptr)(void);
45
46/*!
47 * @function net_init_add
48 * @discussion Add a function to be called during network initialization. Your
49 * kext must not unload until the function you register is called if
50 * net_init_add returns success.
51 * @param init_func A pointer to a function to be called when the stack is
52 * initialized.
53 * @result EINVAL - the init_func value was NULL.
54 * EALREADY - the network has already been initialized
55 * ENOMEM - there was not enough memory to perform this operation
56 * 0 - success
57 */
58errno_t net_init_add(net_init_func_ptr init_func);
59
60#ifdef BSD_KERNEL_PRIVATE
61/* net_init_run is called from bsd_init */
62extern void net_init_run(void);
63#endif /* BSD_KERNEL_PRIVATE */
64
65#endif /* _NET_INIT_H_ */
66