/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code 
 * as defined in and that are subject to the Apple Public Source License 
 * Version 2.0 (the 'License'). You may not use this file except in 
 * compliance with the License.  The rights granted to you under the 
 * License may not be used to create, or enable the creation or 
 * redistribution of, unlawful or unlicensed copies of an Apple operating 
 * system, or to circumvent, violate, or enable the circumvention or 
 * violation of, any terms of an Apple operating system software license 
 * agreement.
 *
 * Please obtain a copy of the License at 
 * http://www.opensource.apple.com/apsl/ and read it before using this 
 * file.
 *
 * The Original Code and all software distributed under the License are 
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
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 */
/*!
	@header init.h
	This header defines an API to register a function that will be called when
	the network stack is being initialized. This gives a kernel extensions an
	opportunity to install filters before sockets are created and network
	operations occur.
 */
#ifndef _NET_INIT_H_
#define	_NET_INIT_H_
#include <sys/kernel_types.h>

/*!
	@typedef net_init_func_ptr
	@discussion net_init_func_ptr will be called once the networking stack
		initialized and before network operations occur.
 */
typedef	void	(*net_init_func_ptr)(void);

/*!
	@function net_init_add
	@discussion Add a function to be called during network initialization. Your
		kext must not unload until the function you  register is called if
		net_init_add returns success.
	@param init_func A pointer to a function to be called when the stack is
		initialized.
	@result	EINVAL - the init_func value was NULL.
			EALREADY - the network has already been initialized
			ENOMEM - there was not enough memory to perform this operation
			0 - success
 */
errno_t	net_init_add(net_init_func_ptr	init_func);

#ifdef BSD_KERNEL_PRIVATE
/* net_init_run is called from bsd_init */
extern void net_init_run(void);
#endif /* BSD_KERNEL_PRIVATE */

#endif /* _NET_INIT_H_ */
