100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2005, 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.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* @(#)$Id: tapdev-drv.c,v 1.2 2007/05/23 22:13:29 oliverschmidt Exp $
|
|
*/
|
|
|
|
#include "contiki-net.h"
|
|
#include "tapdev.h"
|
|
#include "net/uip-neighbor.h"
|
|
|
|
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
|
|
|
|
PROCESS(tapdev_process, "TAP driver");
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
u8_t
|
|
tapdev_output(void)
|
|
{
|
|
uip_arp_out();
|
|
tapdev_send();
|
|
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
pollhandler(void)
|
|
{
|
|
process_poll(&tapdev_process);
|
|
uip_len = tapdev_poll();
|
|
|
|
if(uip_len > 0) {
|
|
#if UIP_CONF_IPV6
|
|
if(BUF->type == htons(UIP_ETHTYPE_IPV6)) {
|
|
uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
|
|
tcpip_input();
|
|
} else
|
|
#endif /* UIP_CONF_IPV6 */
|
|
if(BUF->type == htons(UIP_ETHTYPE_IP)) {
|
|
uip_len -= sizeof(struct uip_eth_hdr);
|
|
tcpip_input();
|
|
} else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
|
|
uip_arp_arpin();
|
|
/* If the above function invocation resulted in data that
|
|
should be sent out on the network, the global variable
|
|
uip_len is set to a value > 0. */
|
|
if(uip_len > 0) {
|
|
tapdev_send();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS_THREAD(tapdev_process, ev, data)
|
|
{
|
|
PROCESS_POLLHANDLER(pollhandler());
|
|
PROCESS_EXITHANDLER(exithandler());
|
|
|
|
PROCESS_BEGIN();
|
|
|
|
tapdev_init();
|
|
|
|
tcpip_set_outputfunc(tapdev_output);
|
|
|
|
process_poll(&tapdev_process);
|
|
|
|
PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
|
|
|
|
tapdev_exit();
|
|
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|