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 */ 44 typedef 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 */ 58 errno_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 */ 62 extern void net_init_run(void); 63 #endif /* BSD_KERNEL_PRIVATE */ 64 65 #endif /* _NET_INIT_H_ */ 66