llsec802154.h

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/*
 * Copyright (c) 2013, Hasso-Plattner-Institut.
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
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 * 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
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 * This file is part of the Contiki operating system.
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/**
 * \file
 *         Common functionality of 802.15.4-compliant llsec_drivers.
 * \author
 *         Konrad Krentz <konrad.krentz@gmail.com>
 */

/**
 * \addtogroup llsec
 * @{
 */

/**
 * \defgroup llsec802154
 * 
 * Common functionality of 802.15.4-compliant llsec_drivers.
 * 
 * @{
 */

#ifndef LLSEC802154_H_
#define LLSEC802154_H_

#include "net/mac/frame802154.h"
#include "net/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_ */

/** @} */
/** @} */