1/* 2 * Copyright (c) 2008-2011 Apple 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 30#ifndef _NET_IF_UTUN_H_ 31#define _NET_IF_UTUN_H_ 32 33#include <net/if_utun_crypto.h> 34 35#ifdef KERNEL_PRIVATE 36 37#include <sys/kern_control.h> 38 39/* Control block allocated for each kernel control connection */ 40struct utun_pcb { 41 kern_ctl_ref utun_ctlref; 42 ifnet_t utun_ifp; 43 u_int32_t utun_unit; 44 u_int32_t utun_flags; 45 int utun_ext_ifdata_stats; 46 utun_crypto_ctx_t utun_crypto_ctx[UTUN_CRYPTO_CTX_NUM_DIRS]; 47}; 48 49void* utun_alloc(size_t size); 50void utun_free(void *ptr); 51errno_t utun_register_control(void); 52 53#endif 54 55/* 56 * Name registered by the utun kernel control 57 */ 58#define UTUN_CONTROL_NAME "com.apple.net.utun_control" 59 60/* 61 * Socket option names to manage utun 62 */ 63#define UTUN_OPT_FLAGS 1 64#define UTUN_OPT_IFNAME 2 65#define UTUN_OPT_EXT_IFDATA_STATS 3 /* get|set (type int) */ 66#define UTUN_OPT_INC_IFDATA_STATS_IN 4 /* set to increment stat counters (type struct utun_stats_param) */ 67#define UTUN_OPT_INC_IFDATA_STATS_OUT 5 /* set to increment stat counters (type struct utun_stats_param) */ 68#define UTUN_OPT_ENABLE_CRYPTO 6 69#define UTUN_OPT_CONFIG_CRYPTO_KEYS 7 70#define UTUN_OPT_UNCONFIG_CRYPTO_KEYS 8 71#define UTUN_OPT_GENERATE_CRYPTO_KEYS_IDX 9 72#define UTUN_OPT_DISABLE_CRYPTO 10 73#define UTUN_OPT_STOP_CRYPTO_DATA_TRAFFIC 11 74#define UTUN_OPT_START_CRYPTO_DATA_TRAFFIC 12 75 76/* 77 * Flags for by UTUN_OPT_FLAGS 78 */ 79#define UTUN_FLAGS_NO_OUTPUT 0x0001 80#define UTUN_FLAGS_NO_INPUT 0x0002 81#define UTUN_FLAGS_CRYPTO 0x0004 82#define UTUN_FLAGS_CRYPTO_STOP_DATA_TRAFFIC 0x0008 83 84/* 85 * utun packet type flags 86 */ 87#define UTUN_PKT_TYPE_KEEPALIVE 0x0001 88#define UTUN_PKT_TYPE_IPSEC 0x0002 89#define UTUN_PKT_TYPE_DTLS 0x0004 90 91 92/* 93 * utun stats parameter structure 94 */ 95struct utun_stats_param { 96 u_int64_t utsp_packets; 97 u_int64_t utsp_bytes; 98 u_int64_t utsp_errors; 99}; 100 101#endif 102