contiki/platform/esb/net/uip-driver.c

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/*
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* Copyright (c) 2010, 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.
*
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*/
/**
* \file
* A brief description of what this file is
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
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#include "net/netstack.h"
#include "net/uip.h"
#include "net/tcpip.h"
#include "net/hc.h"
#include "net/packetbuf.h"
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#include "net/uip-driver.h"
#include <string.h>
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/*--------------------------------------------------------------------*/
static void
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init(void)
{
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/*
* Set out output function as the function to be called from uIP to
* send a packet.
*/
tcpip_set_outputfunc(uip_driver_send);
}
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/*--------------------------------------------------------------------*/
static void
input(void)
{
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if(packetbuf_datalen() > 0 &&
packetbuf_datalen() <= UIP_BUFSIZE - UIP_LLH_LEN) {
memcpy(&uip_buf[UIP_LLH_LEN], packetbuf_dataptr(), packetbuf_datalen());
uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], packetbuf_datalen());
tcpip_input();
}
}
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/*--------------------------------------------------------------------*/
uint8_t
uip_driver_send(void)
{
uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len);
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packetbuf_copyfrom(&uip_buf[UIP_LLH_LEN], uip_len);
/* XXX we should provide a callback function that is called when the
packet is sent. For now, we just supply a NULL pointer. */
NETSTACK_MAC.send(NULL, NULL);
return 1;
}
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/*--------------------------------------------------------------------*/
const struct network_driver uip_driver = {
"uip",
init,
input
};
/*--------------------------------------------------------------------*/