97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 2009, Swedish Institute of Computer Science.
|
|
* 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.
|
|
*
|
|
* $Id: framer-nullmac.c,v 1.2 2010/06/14 19:19:16 adamdunkels Exp $
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* MAC framer for nullmac
|
|
* \author
|
|
* Niclas Finne <nfi@sics.se>
|
|
* Joakim Eriksson <joakime@sics.se>
|
|
*/
|
|
|
|
#include "net/mac/framer-nullmac.h"
|
|
#include "net/packetbuf.h"
|
|
|
|
#define DEBUG 0
|
|
|
|
#if DEBUG
|
|
#include <stdio.h>
|
|
#define PRINTF(...) printf(__VA_ARGS__)
|
|
#define PRINTADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7])
|
|
#else
|
|
#define PRINTF(...)
|
|
#define PRINTADDR(addr)
|
|
#endif
|
|
|
|
struct nullmac_hdr {
|
|
rimeaddr_t receiver;
|
|
rimeaddr_t sender;
|
|
};
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
create(void)
|
|
{
|
|
struct nullmac_hdr *hdr;
|
|
|
|
if(packetbuf_hdralloc(sizeof(struct nullmac_hdr))) {
|
|
hdr = packetbuf_hdrptr();
|
|
rimeaddr_copy(&(hdr->sender), &rimeaddr_node_addr);
|
|
rimeaddr_copy(&(hdr->receiver), packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
|
|
return sizeof(struct nullmac_hdr);
|
|
}
|
|
PRINTF("PNULLMAC-UT: too large header: %u\n", len);
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
parse(void)
|
|
{
|
|
struct nullmac_hdr *hdr;
|
|
hdr = packetbuf_dataptr();
|
|
if(packetbuf_hdrreduce(sizeof(struct nullmac_hdr))) {
|
|
packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &(hdr->sender));
|
|
packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &(hdr->receiver));
|
|
|
|
PRINTF("PNULLMAC-IN: ");
|
|
PRINTADDR(packetbuf_addr(PACKETBUF_ADDR_SENDER));
|
|
PRINTADDR(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
|
|
PRINTF("%u (%u)\n", packetbuf_datalen(), len);
|
|
|
|
return sizeof(struct nullmac_hdr);
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
const struct framer framer_nullmac = {
|
|
create, parse
|
|
};
|