92 lines
3 KiB
C
92 lines
3 KiB
C
/*
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* Copyright (c) 2004, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* $Id: ethernode-drv.c,v 1.4 2006/10/10 15:58:31 adamdunkels Exp $
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*/
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#include "contiki.h"
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#include "ethernode.h"
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#include "net/uip-fw.h"
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#include "net/hc.h"
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#include "net/tapdev.h"
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#include "node-id.h"
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PROCESS(ethernode_drv_process, "Ethernode driver");
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enum { NULLEVENT };
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/*---------------------------------------------------------------------------*/
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u8_t
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ethernode_drv_send(void)
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{
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uip_len = hc_compress(&uip_buf[UIP_LLH_LEN], uip_len);
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return ethernode_send();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(ethernode_drv_process, ev, data)
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{
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static int drop = 3;
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PROCESS_BEGIN();
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while(1) {
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process_poll(ðernode_drv_process);
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PROCESS_WAIT_EVENT();
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/* Poll Ethernet device to see if there is a frame avaliable. */
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uip_len = ethernode_poll();
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if(uip_len > 0) {
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/* printf("%d: new packet len %d\n", node_id, uip_len);*/
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/* if((random_rand() % drop) <= drop / 2) {
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printf("Bropp\n");
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} else*/ {
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uip_len = hc_inflate(&uip_buf[UIP_LLH_LEN], uip_len);
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tapdev_send_raw();
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/* if(uip_fw_forward() == UIP_FW_LOCAL)*/ {
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/* A frame was avaliable (and is now read into the uip_buf), so
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we process it. */
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tcpip_input();
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}
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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