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/*
* Copyright (c) 2013, Hasso-Plattner-Institut.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Common functionality of 802.15.4-compliant llsec_drivers.
* \author
* Konrad Krentz <konrad.krentz@gmail.com>
*/
/**
* \addtogroup llsec
* @{
*/
/**
* \defgroup llsec802154 Link Layer Security Common Functionality
*
* Common functionality of 802.15.4-compliant llsec_drivers.
*
* @{
*/
#ifndef LLSEC802154_H_
#define LLSEC802154_H_
#include "contiki/mac/frame802154.h"
#include "contiki/ip/uip.h"
#ifdef LLSEC802154_CONF_SECURITY_LEVEL
#define LLSEC802154_SECURITY_LEVEL LLSEC802154_CONF_SECURITY_LEVEL
#else /* LLSEC802154_CONF_SECURITY_LEVEL */
#define LLSEC802154_SECURITY_LEVEL FRAME802154_SECURITY_LEVEL_NONE
#endif /* LLSEC802154_CONF_SECURITY_LEVEL */
#if ((LLSEC802154_SECURITY_LEVEL < 0) || (LLSEC802154_SECURITY_LEVEL > 7))
#error "unsupported security level"
#endif
#define LLSEC802154_SECURITY_LEVEL_MIC (LLSEC802154_SECURITY_LEVEL & 3)
#if LLSEC802154_SECURITY_LEVEL_MIC
#define LLSEC802154_MIC_LENGTH (2 << LLSEC802154_SECURITY_LEVEL_MIC)
#else
#define LLSEC802154_MIC_LENGTH 0
#endif
#ifdef LLSEC802154_CONF_USES_ENCRYPTION
#define LLSEC802154_USES_ENCRYPTION LLSEC802154_CONF_USES_ENCRYPTION
#else /* LLSEC802154_CONF_USES_ENCRYPTION */
#define LLSEC802154_USES_ENCRYPTION (LLSEC802154_SECURITY_LEVEL & (1 << 2))
#endif /* LLSEC802154_CONF_USES_ENCRYPTION */
#ifdef LLSEC802154_CONF_USES_EXPLICIT_KEYS
#define LLSEC802154_USES_EXPLICIT_KEYS LLSEC802154_CONF_USES_EXPLICIT_KEYS
#else /* LLSEC802154_CONF_USES_EXPLICIT_KEYS */
#define LLSEC802154_USES_EXPLICIT_KEYS 0
#endif /* LLSEC802154_CONF_USES_EXPLICIT_KEYS */
#if UIP_BYTE_ORDER == UIP_LITTLE_ENDIAN
#define LLSEC802154_HTONS(n) (n)
#define LLSEC802154_HTONL(n) (n)
#else /* UIP_CONF_BYTE_ORDER == UIP_LITTLE_ENDIAN */
#define LLSEC802154_HTONS(n) (uint16_t)((((uint16_t) (n)) << 8) | (((uint16_t) (n)) >> 8))
#define LLSEC802154_HTONL(n) (((uint32_t)UIP_HTONS(n) << 16) | UIP_HTONS((uint32_t)(n) >> 16))
#endif /* UIP_CONF_BYTE_ORDER == UIP_LITTLE_ENDIAN */
#endif /* LLSEC802154_H_ */
/** @} */
/** @} */