nes-proj/tools/sky/uip6-bridge/uip6-bridge-tap.c

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/*
* 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.
*
*
*/
/**
* \file
* A brief description of what this file is
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#include "contiki.h"
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#include "net/ipv6/uip.h"
#include "dev/slip.h"
#include "dev/leds.h"
#include "sicslow_ethernet.h"
#include "net/packetbuf.h"
#include <stdio.h>
#include <string.h>
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
PROCESS(uip6_bridge, "IPv6/6lowpan TAP bridge");
PROCESS(tcpip_process, "tcpip dummy");
AUTOSTART_PROCESSES(&uip6_bridge);
/*---------------------------------------------------------------------------*/
static uint8_t (* outputfunc)(const uip_lladdr_t *a);
uint8_t
tcpip_output(const uip_lladdr_t *a)
{
if(outputfunc != NULL) {
outputfunc(a);
leds_toggle(LEDS_GREEN);
}
return 0;
}
void
tcpip_ipv6_output(void)
{
}
void
tcpip_set_outputfunc(uint8_t (*f)(const uip_lladdr_t *))
{
outputfunc = f;
}
PROCESS_THREAD(tcpip_process, ev, data)
{
PROCESS_BEGIN();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/* Packet from SICSLoWPAN */
void
tcpip_input(void)
{
if(uip_len > 0) {
mac_LowpanToEthernet();
if(uip_len > 0) {
slip_write(uip_buf, uip_len);
leds_toggle(LEDS_RED);
uip_clear_buf();
}
}
}
/*---------------------------------------------------------------------------*/
/* Packet from SLIP */
static void
slip_tcpip_input(void)
{
/* TODO Should fix this in slip configuration */
memmove(uip_buf, &uip_buf[UIP_LLH_LEN], uip_len);
mac_ethernetToLowpan(uip_buf);
}
/*---------------------------------------------------------------------------*/
static void
slip_activity(void)
{
leds_toggle(LEDS_BLUE);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(uip6_bridge, ev, data)
{
PROCESS_BEGIN();
printf("Setting up SLIP\n");
mac_ethernetSetup();
slip_arch_init();
slip_set_input_callback(slip_activity);
slip_set_tcpip_input_callback(slip_tcpip_input);
process_start(&slip_process, NULL);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
int
putchar(int c)
{
#define SLIP_END 0300
static char debug_frame = 0;
if(!debug_frame) { /* Start of debug output */
slip_arch_writeb(SLIP_END);
slip_arch_writeb('\r'); /* Type debug line == '\r' */
debug_frame = 1;
}
slip_arch_writeb((char)c);
/*
* Line buffered output, a newline marks the end of debug output and
* implicitly flushes debug output.
*/
if(c == '\n') {
slip_arch_writeb(SLIP_END);
debug_frame = 0;
}
return c;
}
/*---------------------------------------------------------------------------*/