1/* 2 * Copyright (c) 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#ifndef _NET_IF_UTUN_CRYPTO_IPSEC_H_ 30#define _NET_IF_UTUN_CRYPTO_IPSEC_H_ 31 32#ifdef KERNEL_PRIVATE 33 34struct utun_pcb; 35 36#define UTUN_CRYPTO_DIR_TO_IPSEC_DIR(dir) (dir == UTUN_CRYPTO_DIR_IN)? IPSEC_DIR_INBOUND : IPSEC_DIR_OUTBOUND 37#define IF_UTUN_GET_TX_CRYPTO_KEYS(pcb) LIST_FIRST(&pcb->utun_crypto_ctx[UTUN_CRYPTO_DIR_TO_IDX(UTUN_CRYPTO_DIR_OUT)].keys_listhead) 38#define IF_UTUN_GET_CRYPTO_KEYS_IPSEC_SAH(keys) keys->state.u.ipsec.sah 39#define IF_UTUN_GET_CRYPTO_KEYS_IPSEC_SAV(keys) keys->state.u.ipsec.sav 40 41/* 42 * Summary: cleans up all crypto info for the specified utun. 43 */ 44void 45utun_cleanup_all_crypto_ipsec(struct utun_pcb *pcb); 46 47/* 48 * Summary: enables ipsec crypto info for the specified utun. 49 */ 50void 51utun_ctl_enable_crypto_ipsec(struct utun_pcb *pcb, utun_crypto_args_t *args); 52 53/* 54 * Summary: disables ipsec crypto info for the specified utun. 55 */ 56void 57utun_ctl_disable_crypto_ipsec(struct utun_pcb *pcb); 58 59/* 60 * Summary: configures an ipsec crypto context for the specified utun, with keying material 61 * (needed for traffic encrypt/decrypt). 62 * Args: 63 * pcb - the specified utun state info 64 * args - the ipsec crypto context keying arguments as passed down from userland. 65 * crypto_ctx_mat - the ipsec crypto context's keying material to be filled. 66 * Returns: 0 if successful, otherwise returns an appropriate errno. 67 */ 68errno_t 69utun_ctl_config_crypto_keys_ipsec(struct utun_pcb *pcb, 70 utun_crypto_keys_args_t *args, 71 utun_crypto_keys_t *crypto_ctx_mat); 72 73/* 74 * Summary: unconfigures the keying material in an ipsec crypto context for the specified utun. 75 * Args: 76 * args - the ipsec crypto context keying arguments as passed down from userland. 77 * crypto_ctx_mat - the ipsec crypto context's keying material to be filled. 78 * Returns: 0 if successful, otherwise returns an appropriate errno. 79 */ 80errno_t 81utun_ctl_unconfig_crypto_keys_ipsec(utun_crypto_keys_args_t *args, 82 utun_crypto_keys_t *crypto_ctx_mat); 83 84/* 85 * Summary: generates an SPI/index to be using by keying material in an ipsec crypto context 86 * for the specified utun. 87 * Args: 88 * args - the ipsec crypto context key index arguments as passed down from userland. 89 * Returns: 0 if successful, otherwise returns an appropriate errno. 90 */ 91errno_t 92utun_ctl_generate_crypto_keys_idx_ipsec(utun_crypto_keys_idx_args_t *args); 93 94int 95utun_pkt_ipsec_output(struct utun_pcb *pcb, mbuf_t *pkt); 96 97int 98utun_pkt_is_ipsec_keepalive(struct utun_pcb *pcb, mbuf_t *pkt, u_int16_t nxt, u_int32_t flags, size_t off); 99 100int 101utun_pkt_ipsec_input(struct utun_pcb *pcb, mbuf_t *pkt, protocol_family_t family); 102 103#endif // KERNEL_PRIVATE 104 105#endif // _NET_IF_UTUN_CRYPTO_IPSEC_H_ 106