140 lines
4.4 KiB
C
140 lines
4.4 KiB
C
/****************************************************************************
|
|
* ieee802154/common/ieee802154_addrparse.c
|
|
*
|
|
* Copyright (C) 2015 Sebastien Lorquet. All rights reserved.
|
|
* Author: Sebastien Lorquet <sebastien@lorquet.fr>
|
|
*
|
|
* 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 NuttX 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 COPYRIGHT HOLDERS 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
|
|
* COPYRIGHT OWNER 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <nuttx/wireless/ieee802154/ieee802154.h>
|
|
#include <nuttx/wireless/ieee802154/ieee802154_mac.h>
|
|
#include "ieee802154/ieee802154.h"
|
|
|
|
int ieee802154_addrparse(FAR struct ieee802154_packet_s *packet,
|
|
FAR struct ieee802154_addr_s *dest,
|
|
FAR struct ieee802154_addr_s *src)
|
|
{
|
|
uint16_t frame_ctrl;
|
|
int index=3;
|
|
|
|
/* read fc */
|
|
|
|
frame_ctrl = packet->data[0];
|
|
frame_ctrl |= packet->data[1] << 8;
|
|
|
|
dest->ia_mode = (frame_ctrl & IEEE802154_FRAMECTRL_DADDR)
|
|
>> IEEE802154_FRAMECTRL_SHIFT_DADDR;
|
|
|
|
|
|
src->ia_mode = (frame_ctrl & IEEE802154_FRAMECTRL_SADDR)
|
|
>> IEEE802154_FRAMECTRL_SHIFT_SADDR;
|
|
|
|
/* decode dest addr */
|
|
|
|
switch (dest->ia_mode)
|
|
{
|
|
case IEEE802154_ADDRMODE_SHORT:
|
|
{
|
|
memcpy(&dest->ia_panid, packet->data+index, 2);
|
|
index += 2; /* skip dest pan id */
|
|
memcpy(&dest->ia_saddr, packet->data+index, 2);
|
|
index += 2; /* skip dest addr */
|
|
}
|
|
break;
|
|
|
|
case IEEE802154_ADDRMODE_EXTENDED:
|
|
{
|
|
memcpy(&dest->ia_panid, packet->data+index, 2);
|
|
index += 2; /* skip dest pan id */
|
|
memcpy(dest->ia_eaddr, packet->data+index, 8);
|
|
index += 8; /* skip dest addr */
|
|
}
|
|
break;
|
|
|
|
case IEEE802154_ADDRMODE_NONE:
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((src->ia_mode == IEEE802154_ADDRMODE_SHORT) ||
|
|
(src->ia_mode == IEEE802154_ADDRMODE_EXTENDED))
|
|
{
|
|
/* If PANID compression, src PAN ID is same as dest */
|
|
|
|
if(frame_ctrl & IEEE802154_FRAMECTRL_INTRA)
|
|
{
|
|
src->ia_panid = dest->ia_panid;
|
|
}
|
|
else
|
|
{
|
|
memcpy(&src->ia_panid, packet->data+index, 2);
|
|
index += 2; /*skip dest pan id*/
|
|
}
|
|
}
|
|
|
|
/* decode source addr */
|
|
|
|
switch (src->ia_mode)
|
|
{
|
|
case IEEE802154_ADDRMODE_SHORT:
|
|
{
|
|
memcpy(&src->ia_saddr, packet->data+index, 2);
|
|
index += 2; /* skip src addr */
|
|
}
|
|
break;
|
|
|
|
case IEEE802154_ADDRMODE_EXTENDED:
|
|
{
|
|
memcpy(src->ia_eaddr, packet->data+index, 8);
|
|
index += 8; /* skip src addr */
|
|
}
|
|
break;
|
|
|
|
case IEEE802154_ADDRMODE_NONE:
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|