osd-contiki/platform/gtk/net/tapdev-service.c

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/*
* 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-service.c,v 1.4 2007/03/27 21:26:25 oliverschmidt Exp $
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*/
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#include "contiki-net.h"
#include "tapdev.h"
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#include "net/uip-neighbor.h"
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#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
u8_t tapdev_output(void);
SERVICE(tapdev_service, packet_service, { tapdev_output });
PROCESS(tapdev_process, "TAP driver");
/*---------------------------------------------------------------------------*/
u8_t
tapdev_output(void)
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{
uip_arp_out();
tapdev_send();
return 0;
}
/*---------------------------------------------------------------------------*/
static void
pollhandler(void)
{
process_poll(&tapdev_process);
uip_len = tapdev_poll();
if(uip_len > 0) {
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#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)) {
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_BEGIN();
tapdev_init();
SERVICE_REGISTER(tapdev_service);
process_poll(&tapdev_process);
while(1) {
PROCESS_YIELD();
if(ev == PROCESS_EVENT_POLL) {
pollhandler();
}
}
PROCESS_END();
}
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/*---------------------------------------------------------------------------*/