Modification to tapdev for IPv6 support
This commit is contained in:
julienabeille
parent
8a401ea9d9
commit
632a3585f5
233
cpu/native/net/tapdev6.c
Normal file
233
cpu/native/net/tapdev6.c
Normal file
|
|
@ -0,0 +1,233 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2001, 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.
|
||||||
|
*
|
||||||
|
* Author: Adam Dunkels <adam@sics.se>
|
||||||
|
*
|
||||||
|
* $Id: tapdev6.c,v 1.1 2008/10/14 09:47:15 julienabeille Exp $
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <sys/socket.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <sys/time.h>
|
||||||
|
#include <sys/uio.h>
|
||||||
|
#include <sys/socket.h>
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef linux
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <linux/if.h>
|
||||||
|
#include <linux/if_tun.h>
|
||||||
|
#define DEVTAP "/dev/net/tun"
|
||||||
|
#else /* linux */
|
||||||
|
#define DEVTAP "/dev/tap0"
|
||||||
|
#endif /* linux */
|
||||||
|
|
||||||
|
|
||||||
|
#include "tapdev6.h"
|
||||||
|
#include "contiki-net.h"
|
||||||
|
|
||||||
|
#define DROP 0
|
||||||
|
|
||||||
|
#if DROP
|
||||||
|
static int drop = 0;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static int fd;
|
||||||
|
|
||||||
|
static unsigned long lasttime;
|
||||||
|
|
||||||
|
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
|
||||||
|
#define IPBUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
|
||||||
|
|
||||||
|
#define DEBUG 0
|
||||||
|
#if DEBUG
|
||||||
|
#define PRINTF(...) printf(__VA_ARGS__)
|
||||||
|
#define PRINT6ADDR(addr) PRINTF("%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
|
||||||
|
#else
|
||||||
|
#define PRINTF(...)
|
||||||
|
#define PRINT6ADDR(addr)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static void do_send(void);
|
||||||
|
u8_t tapdev_send(uip_lladdr_t *lladdr);
|
||||||
|
|
||||||
|
|
||||||
|
u16_t
|
||||||
|
tapdev_poll(void)
|
||||||
|
{
|
||||||
|
fd_set fdset;
|
||||||
|
struct timeval tv;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
tv.tv_sec = 0;
|
||||||
|
tv.tv_usec = 0;
|
||||||
|
|
||||||
|
FD_ZERO(&fdset);
|
||||||
|
if(fd > 0) {
|
||||||
|
FD_SET(fd, &fdset);
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = select(fd + 1, &fdset, NULL, NULL, &tv);
|
||||||
|
|
||||||
|
if(ret == 0) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
ret = read(fd, uip_buf, UIP_BUFSIZE);
|
||||||
|
|
||||||
|
PRINTF("tapdev6: read %d bytes (max %d)\n", ret, UIP_BUFSIZE);
|
||||||
|
|
||||||
|
if(ret == -1) {
|
||||||
|
perror("tapdev_poll: read");
|
||||||
|
}
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
void
|
||||||
|
tapdev_init(void)
|
||||||
|
{
|
||||||
|
char buf[1024];
|
||||||
|
|
||||||
|
fd = open(DEVTAP, O_RDWR);
|
||||||
|
if(fd == -1) {
|
||||||
|
perror("tapdev: tapdev_init: open");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef linux
|
||||||
|
{
|
||||||
|
struct ifreq ifr;
|
||||||
|
memset(&ifr, 0, sizeof(ifr));
|
||||||
|
ifr.ifr_flags = IFF_TAP|IFF_NO_PI;
|
||||||
|
if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) {
|
||||||
|
perror(buf);
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif /* Linux */
|
||||||
|
|
||||||
|
/* Linux (ubuntu)
|
||||||
|
snprintf(buf, sizeof(buf), "ip link set tap0 up");
|
||||||
|
system(buf);
|
||||||
|
PRINTF("%s\n", buf);
|
||||||
|
snprintf(buf, sizeof(buf), "ip -6 address add fc00::231/7 dev tap0");
|
||||||
|
system(buf);
|
||||||
|
PRINTF("%s\n", buf);
|
||||||
|
snprintf(buf, sizeof(buf), "ip -6 route add fc00::0/7 dev tap0");
|
||||||
|
system(buf);
|
||||||
|
PRINTF("%s\n", buf);
|
||||||
|
*/
|
||||||
|
/* freebsd */
|
||||||
|
snprintf(buf, sizeof(buf), "ifconfig tap0 up");
|
||||||
|
system(buf);
|
||||||
|
printf("%s\n", buf);
|
||||||
|
|
||||||
|
/* */
|
||||||
|
lasttime = 0;
|
||||||
|
|
||||||
|
/* gdk_input_add(fd, GDK_INPUT_READ,
|
||||||
|
read_callback, NULL);*/
|
||||||
|
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static void
|
||||||
|
do_send(void)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if(fd <= 0) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
PRINTF("tapdev_send: sending %d bytes\n", uip_len);
|
||||||
|
/* check_checksum(uip_buf, size);*/
|
||||||
|
#if DROP
|
||||||
|
drop++;
|
||||||
|
if(drop % 8 == 7) {
|
||||||
|
PRINTF("Dropped an output packet!\n");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
#endif /* DROP */
|
||||||
|
|
||||||
|
ret = write(fd, uip_buf, uip_len);
|
||||||
|
|
||||||
|
if(ret == -1) {
|
||||||
|
perror("tap_dev: tapdev_send: writev");
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
u8_t tapdev_send(uip_lladdr_t *lladdr)
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* If L3 dest is multicast, build L2 multicast address
|
||||||
|
* as per RFC 2464 section 7
|
||||||
|
* else fill with th eaddrsess in argument
|
||||||
|
*/
|
||||||
|
if(lladdr == NULL) {
|
||||||
|
/* the dest must be multicast */
|
||||||
|
(&BUF->dest)->addr[0] = 0x33;
|
||||||
|
(&BUF->dest)->addr[1] = 0x33;
|
||||||
|
(&BUF->dest)->addr[2] = IPBUF->destipaddr.u8[12];
|
||||||
|
(&BUF->dest)->addr[3] = IPBUF->destipaddr.u8[13];
|
||||||
|
(&BUF->dest)->addr[4] = IPBUF->destipaddr.u8[14];
|
||||||
|
(&BUF->dest)->addr[5] = IPBUF->destipaddr.u8[15];
|
||||||
|
} else {
|
||||||
|
memcpy(&BUF->dest, lladdr, UIP_LLADDR_LEN);
|
||||||
|
}
|
||||||
|
memcpy(&BUF->src, &uip_lladdr, UIP_LLADDR_LEN);
|
||||||
|
BUF->type = HTONS(UIP_ETHTYPE_IPV6); //math tmp
|
||||||
|
|
||||||
|
uip_len += sizeof(struct uip_eth_hdr);
|
||||||
|
do_send();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
void
|
||||||
|
tapdev_do_send(void)
|
||||||
|
{
|
||||||
|
do_send();
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
// math added function
|
||||||
|
void
|
||||||
|
tapdev_exit(void)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
47
cpu/native/net/tapdev6.h
Normal file
47
cpu/native/net/tapdev6.h
Normal file
|
|
@ -0,0 +1,47 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2003, Adam Dunkels.
|
||||||
|
* 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. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed by Adam Dunkels.
|
||||||
|
* 4. The name of the author may not be used to endorse or promote
|
||||||
|
* products derived from this software without specific prior
|
||||||
|
* written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
|
||||||
|
*
|
||||||
|
* $Id: tapdev6.h,v 1.1 2008/10/14 09:47:15 julienabeille Exp $
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#ifndef __TAPDEV_H__
|
||||||
|
#define __TAPDEV_H__
|
||||||
|
|
||||||
|
#include "contiki-net.h"
|
||||||
|
|
||||||
|
void tapdev_init(void);
|
||||||
|
u8_t tapdev_send(uip_lladdr_t *lladdr);
|
||||||
|
u16_t tapdev_poll(void);
|
||||||
|
void tapdev_do_send(void);
|
||||||
|
void tapdev_exit(void); //math
|
||||||
|
#endif /* __TAPDEV_H__ */
|
||||||
Loading…
Reference in a new issue