181 lines
6.0 KiB
C
181 lines
6.0 KiB
C
/*
|
|
* Copyright (c) 2007, 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.
|
|
*
|
|
*/
|
|
|
|
#include "contiki-net.h"
|
|
#include "net/uip-neighbor.h"
|
|
#include "net/wpcap.h"
|
|
|
|
#include "net/wpcap-drv.h"
|
|
#include <string.h>
|
|
|
|
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
|
|
#define IPBUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
|
|
|
|
/* It is not particularly easy to install tun interfaces in Windows/cygwin, so wpcap
|
|
* is used instead. The ip4 or ip6 address of the interface to connect to is passed
|
|
* on the command line that invokes the minimal-net and native executables.
|
|
*
|
|
* The minimal-net border router uses wpcap to connect to both primary
|
|
* and fallback interfaces. It is passed two addresses, and the uip stack is compiled
|
|
* with space for the ethernet headers on both interfaces.
|
|
*
|
|
* However the native border router uses wpcap to connect to a fallback interface only.
|
|
* The primary interface is the serial connection to the slip radio, and the
|
|
* uip stack is compiled without space for ethernet headers.
|
|
* The following define adds or strips ethernet headers from the fallback interface.
|
|
* Since it is at present used only with the native border router, it is also used
|
|
* as a hack to bypass polling of the primary interface.
|
|
*
|
|
* SELECT_CALLBACK is defined in /examples/ipv6/native-border-router/project-conf.h
|
|
*/
|
|
#ifdef SELECT_CALLBACK
|
|
#define FALLBACK_HAS_ETHERNET_HEADERS 1
|
|
#endif
|
|
|
|
PROCESS(wpcap_process, "WinPcap driver");
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
#if !UIP_CONF_IPV6
|
|
uint8_t
|
|
wpcap_output(void)
|
|
{
|
|
uip_arp_out();
|
|
wpcap_send();
|
|
|
|
return 0;
|
|
}
|
|
#endif /* !UIP_CONF_IPV6 */
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
pollhandler(void)
|
|
{
|
|
#if !FALLBACK_HAS_ETHERNET_HEADERS //native br is fallback only
|
|
process_poll(&wpcap_process);
|
|
uip_len = wpcap_poll();
|
|
|
|
if(uip_len > 0) {
|
|
#if UIP_CONF_IPV6
|
|
if(BUF->type == uip_htons(UIP_ETHTYPE_IPV6)) {
|
|
// printf("wpcap poll calls tcpip");
|
|
tcpip_input();
|
|
} else
|
|
#endif /* UIP_CONF_IPV6 */
|
|
if(BUF->type == uip_htons(UIP_ETHTYPE_IP)) {
|
|
uip_len -= sizeof(struct uip_eth_hdr);
|
|
tcpip_input();
|
|
#if !UIP_CONF_IPV6
|
|
} else if(BUF->type == uip_htons(UIP_ETHTYPE_ARP)) {
|
|
uip_arp_arpin(); //math
|
|
/* 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) {
|
|
wpcap_send();
|
|
}
|
|
#endif /* !UIP_CONF_IPV6 */
|
|
} else {
|
|
uip_len = 0;
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef UIP_FALLBACK_INTERFACE
|
|
|
|
process_poll(&wpcap_process);
|
|
uip_len = wfall_poll();
|
|
|
|
if(uip_len > 0) {
|
|
#if FALLBACK_HAS_ETHERNET_HEADERS
|
|
if(BUF->type == uip_htons(UIP_ETHTYPE_IPV6)) {
|
|
//remove ethernet header and pass ipv6 packet to stack
|
|
uip_len-=14;
|
|
//{int i;printf("\n0000 ");for (i=0;i<uip_len;i++) printf("%02x ",*(unsigned char*)(uip_buf+i));printf("\n");}
|
|
// memcpy(uip_buf, uip_buf+14, uip_len);
|
|
memcpy(&uip_buf[UIP_LLH_LEN], uip_buf+14, uip_len); //LLH_LEN is zero for native border router to slip radio
|
|
// CopyMemory(uip_buf, uip_buf+14, uip_len);
|
|
//{int i;printf("\n0000 ");for (i=0;i<uip_len;i++) printf("%02x ",*(char*)(uip_buf+i));printf("\n");}
|
|
tcpip_input();
|
|
} else
|
|
goto bail;
|
|
#elif UIP_CONF_IPV6
|
|
if(BUF->type == uip_htons(UIP_ETHTYPE_IPV6)) {
|
|
tcpip_input();
|
|
} else
|
|
goto bail;
|
|
#endif /* UIP_CONF_IPV6 */
|
|
if(BUF->type == uip_htons(UIP_ETHTYPE_IP)) {
|
|
uip_len -= sizeof(struct uip_eth_hdr);
|
|
tcpip_input();
|
|
#if !UIP_CONF_IPV6
|
|
} else if(BUF->type == uip_htons(UIP_ETHTYPE_ARP)) {
|
|
uip_arp_arpin(); //math
|
|
/* 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) {
|
|
wfall_send();
|
|
}
|
|
#endif /* !UIP_CONF_IPV6 */
|
|
} else {
|
|
bail:
|
|
uip_len = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS_THREAD(wpcap_process, ev, data)
|
|
{
|
|
PROCESS_POLLHANDLER(pollhandler());
|
|
|
|
PROCESS_BEGIN();
|
|
|
|
wpcap_init();
|
|
|
|
#if !UIP_CONF_IPV6
|
|
tcpip_set_outputfunc(wpcap_output);
|
|
#else
|
|
#if !FALLBACK_HAS_ETHERNET_HEADERS
|
|
tcpip_set_outputfunc(wpcap_send);
|
|
#endif
|
|
#endif /* !UIP_CONF_IPV6 */
|
|
|
|
process_poll(&wpcap_process);
|
|
|
|
PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
|
|
|
|
wpcap_exit();
|
|
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|