mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Slip fallback interface
|
|
* \author
|
|
* Niclas Finne <nfi@sics.se>
|
|
* Joakim Eriksson <joakime@sics.se>
|
|
* Joel Hoglund <joel@sics.se>
|
|
* Nicolas Tsiftes <nvt@sics.se>
|
|
*/
|
|
|
|
#include "net/uip.h"
|
|
#include "net/uip-ds6.h"
|
|
#include "net/rpl/rpl.h"
|
|
#include "dev/slip.h"
|
|
#include <string.h>
|
|
|
|
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
|
|
|
|
#define DEBUG DEBUG_NONE
|
|
#include "net/uip-debug.h"
|
|
|
|
void set_prefix_64(uip_ipaddr_t *);
|
|
|
|
static uip_ipaddr_t last_sender;
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
slip_input_callback(void)
|
|
{
|
|
PRINTF("SIN: %u\n", uip_len);
|
|
if((char)uip_buf[0] == '!') {
|
|
PRINTF("Got configuration message of type %c\n", uip_buf[1]);
|
|
uip_len = 0;
|
|
if((char)uip_buf[1] == 'P') {
|
|
uip_ipaddr_t prefix;
|
|
/* Here we set a prefix !!! */
|
|
memset(&prefix, 0, 16);
|
|
memcpy(&prefix, &uip_buf[2], 8);
|
|
PRINTF("Setting prefix ");
|
|
PRINT6ADDR(&prefix);
|
|
PRINTF("\n");
|
|
set_prefix_64(&prefix);
|
|
}
|
|
}
|
|
/* Save the last sender received over SLIP to avoid bouncing the
|
|
packet back if no route is found */
|
|
uip_ipaddr_copy(&last_sender, &UIP_IP_BUF->srcipaddr);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
init(void)
|
|
{
|
|
process_start(&slip_process, NULL);
|
|
slip_set_input_callback(slip_input_callback);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
output(void)
|
|
{
|
|
if(uip_ipaddr_cmp(&last_sender, &UIP_IP_BUF->srcipaddr)) {
|
|
/* Do not bounce packets back over SLIP if the packet was received
|
|
over SLIP */
|
|
PRINTF("slip-bridge: Destination off-link but no route\n");
|
|
} else {
|
|
PRINTF("SUT: %u\n", uip_len);
|
|
slip_send();
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
struct uip_fallback_interface slip_interface = {
|
|
init, output
|
|
};
|
|
/*---------------------------------------------------------------------------*/
|