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ipv6 bridge between 802.15.4 and ethernet - over USB/SLIP - use with sliptap6

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This commit is contained in:
joxe 2009-05-08 12:49:36 +00:00
parent 8e08bc085c
commit 890eb830e8
8 changed files with 1755 additions and 0 deletions
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21
tools/sky/uip6-bridge/Makefile Normal file
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ifdef CONTIKI_HOME
CONTIKI = $(CONTIKI_HOME)
else
ifndef CONTIKI
CONTIKI=../../../../contiki-2.x
endif
endif
DEFINES=WITH_UIP6=1,WITH_SLIP=1,PROJECT_CONF_H=\"bridge-conf.h\"
UIP_CONF_IPV6=1
ifndef TARGET
TARGET=sky
endif
PROJECTDIRS = dev
PROJECT_SOURCEFILES = fakeuip.c sicslow_ethernet.c
all: uip6-bridge-tap.sky
include $(CONTIKI)/Makefile.include

56
tools/sky/uip6-bridge/bridge-conf.h Normal file
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/*
* Copyright (c) 2009, 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.
*
* $Id: bridge-conf.h,v 1.1 2009/05/08 12:49:36 joxe Exp $
*/
/**
* \file
* A brief description of what this file is
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#ifndef __BRIDGE_CONF_H__
#define __BRIDGE_CONF_H__
#undef UIP_CONF_ROUTER
#undef UIP_CONF_LLH_LEN
#define UIP_CONF_LLH_LEN 14
#undef XMAC_CONF_COMPOWER
#define XMAC_CONF_COMPOWER 0
#undef XMAC_CONF_ANNOUNCEMENTS
#define XMAC_CONF_ANNOUNCEMENTS 0
#undef RF_CHANNEL
#define RF_CHANNEL 24
#endif /* __BRIDGE_CONF_H__ */

392
tools/sky/uip6-bridge/dev/slip.c Normal file
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/* -*- 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: slip.c,v 1.1 2009/05/08 12:49:36 joxe Exp $
*/
#include <stdio.h>
#include <string.h>
#include "dev/ds2411.h"
#include "contiki.h"
#include "net/uip.h"
#include "net/uip-fw.h"
#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
#include "dev/slip.h"
#define SLIP_END 0300
#define SLIP_ESC 0333
#define SLIP_ESC_END 0334
#define SLIP_ESC_ESC 0335
PROCESS(slip_process, "SLIP driver");
uint8_t slip_active;
#if 1
#define SLIP_STATISTICS(statement)
#else
uint16_t slip_rubbish, slip_twopackets, slip_overflow, slip_ip_drop;
#define SLIP_STATISTICS(statement) statement
#endif
/* Must be at least one byte larger than UIP_BUFSIZE! */
#define RX_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN + 16)
enum {
STATE_TWOPACKETS = 0, /* We have 2 packets and drop incoming data. */
STATE_OK = 1,
STATE_ESC = 2,
STATE_RUBBISH = 3,
};
/*
* Variables begin and end manage the buffer space in a cyclic
* fashion. The first used byte is at begin and end is one byte past
* the last. I.e. [begin, end) is the actively used space.
*
* If begin != pkt_end we have a packet at [begin, pkt_end),
* furthermore, if state == STATE_TWOPACKETS we have one more packet at
* [pkt_end, end). If more bytes arrive in state STATE_TWOPACKETS
* they are discarded.
*/
static uint8_t state = STATE_TWOPACKETS;
static uint16_t begin, end;
static uint8_t rxbuf[RX_BUFSIZE];
static uint16_t pkt_end; /* SLIP_END tracker. */
static void (* input_callback)(void) = NULL;
static void (* tcpip_input_callback)(void) = NULL;
/*---------------------------------------------------------------------------*/
void
slip_set_input_callback(void (*c)(void))
{
input_callback = c;
}
/*---------------------------------------------------------------------------*/
void
slip_set_tcpip_input_callback(void (*c)(void))
{
tcpip_input_callback = c;
}
/*---------------------------------------------------------------------------*/
#if WITH_UIP
uint8_t
slip_send(void)
{
uint16_t i;
uint8_t *ptr;
uint8_t c;
slip_arch_writeb(SLIP_END);
ptr = &uip_buf[UIP_LLH_LEN];
for(i = 0; i < uip_len; ++i) {
if(i == UIP_TCPIP_HLEN) {
ptr = (uint8_t *)uip_appdata;
}
c = *ptr++;
if(c == SLIP_END) {
slip_arch_writeb(SLIP_ESC);
c = SLIP_ESC_END;
} else if(c == SLIP_ESC) {
slip_arch_writeb(SLIP_ESC);
c = SLIP_ESC_ESC;
}
slip_arch_writeb(c);
}
slip_arch_writeb(SLIP_END);
return UIP_FW_OK;
}
#endif /* WITH_UIP */
/*---------------------------------------------------------------------------*/
uint8_t
slip_write(const void *_ptr, int len)
{
const uint8_t *ptr = _ptr;
uint16_t i;
uint8_t c;
slip_arch_writeb(SLIP_END);
for(i = 0; i < len; ++i) {
c = *ptr++;
if(c == SLIP_END) {
slip_arch_writeb(SLIP_ESC);
c = SLIP_ESC_END;
} else if(c == SLIP_ESC) {
slip_arch_writeb(SLIP_ESC);
c = SLIP_ESC_ESC;
}
slip_arch_writeb(c);
}
slip_arch_writeb(SLIP_END);
return len;
}
/*---------------------------------------------------------------------------*/
static void
rxbuf_init(void)
{
begin = end = pkt_end = 0;
state = STATE_OK;
}
/*---------------------------------------------------------------------------*/
/* Upper half does the polling. */
static uint16_t
slip_poll_handler(uint8_t *outbuf, uint16_t blen)
{
/* This is a hack and won't work across buffer edge! */
if(rxbuf[begin] == 'C') {
int i;
if(begin < end && (end - begin) >= 6
&& memcmp(&rxbuf[begin], "CLIENT", 6) == 0) {
state = STATE_TWOPACKETS; /* Interrupts do nothing. */
memset(&rxbuf[begin], 0x0, 6);
rxbuf_init();
for(i = 0; i < 13; i++) {
slip_arch_writeb("CLIENTSERVER\300"[i]);
}
return 0;
}
} else if(rxbuf[begin] == '?') {
int i, j;
char* hexchar = "0123456789abcdef";
if(begin < end && (end - begin) >= 2
&& rxbuf[begin + 1] == 'M') {
state = STATE_TWOPACKETS; /* Interrupts do nothing. */
rxbuf[begin] = 0;
rxbuf[begin + 1] = 0;
rxbuf_init();
/* this is just a test so far... just to see if it works */
slip_arch_writeb('!');
slip_arch_writeb('M');
for(j = 0; j < 8; j++) {
slip_arch_writeb(hexchar[ds2411_id[j] >> 4]);
slip_arch_writeb(hexchar[ds2411_id[j] & 15]);
}
slip_arch_writeb(SLIP_END);
return 0;
}
}
/*
* Interrupt can not change begin but may change pkt_end.
* If pkt_end != begin it will not change again.
*/
if(begin != pkt_end) {
uint16_t len;
if(begin < pkt_end) {
len = pkt_end - begin;
if(len > blen) {
len = 0;
} else {
memcpy(outbuf, &rxbuf[begin], len);
}
} else {
len = (RX_BUFSIZE - begin) + (pkt_end - 0);
if(len > blen) {
len = 0;
} else {
unsigned i;
for(i = begin; i < RX_BUFSIZE; i++) {
*outbuf++ = rxbuf[i];
}
for(i = 0; i < pkt_end; i++) {
*outbuf++ = rxbuf[i];
}
}
}
/* Remove data from buffer together with the copied packet. */
begin = pkt_end;
if(state == STATE_TWOPACKETS) {
pkt_end = end;
state = STATE_OK; /* Assume no bytes where lost! */
/* One more packet is buffered, need to be polled again! */
process_poll(&slip_process);
}
return len;
}
return 0;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(slip_process, ev, data)
{
PROCESS_BEGIN();
rxbuf_init();
while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
slip_active = 1;
/* Move packet from rxbuf to buffer provided by uIP. */
uip_len = slip_poll_handler(&uip_buf[UIP_LLH_LEN],
UIP_BUFSIZE - UIP_LLH_LEN);
#if !UIP_CONF_IPV6
if(uip_len == 4 && strncmp((char*)&uip_buf[UIP_LLH_LEN], "?IPA", 4) == 0) {
char buf[8];
memcpy(&buf[0], "=IPA", 4);
memcpy(&buf[4], &uip_hostaddr, 4);
if(input_callback) {
input_callback();
}
slip_write(buf, 8);
} else if(uip_len > 0
&& uip_len == (((uint16_t)(BUF->len[0]) << 8) + BUF->len[1])
&& uip_ipchksum() == 0xffff) {
#define IP_DF 0x40
if(BUF->ipid[0] == 0 && BUF->ipid[1] == 0 && BUF->ipoffset[0] & IP_DF) {
static uint16_t ip_id;
uint16_t nid = ip_id++;
BUF->ipid[0] = nid >> 8;
BUF->ipid[1] = nid;
nid = htons(nid);
nid = ~nid; /* negate */
BUF->ipchksum += nid; /* add */
if(BUF->ipchksum < nid) { /* 1-complement overflow? */
BUF->ipchksum++;
}
}
if(tcpip_input_callback) {
tcpip_input_callback();
} else {
tcpip_input();
}
} else {
uip_len = 0;
SLIP_STATISTICS(slip_ip_drop++);
}
#else /* UIP_CONF_IPV6 */
if(uip_len > 0) {
if(tcpip_input_callback) {
tcpip_input_callback();
} else {
tcpip_input();
}
}
#endif /* UIP_CONF_IPV6 */
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
int
slip_input_byte(unsigned char c)
{
switch(state) {
case STATE_RUBBISH:
if(c == SLIP_END) {
state = STATE_OK;
}
return 0;
case STATE_TWOPACKETS: /* Two packets are already buffered! */
return 0;
case STATE_ESC:
if(c == SLIP_ESC_END) {
c = SLIP_END;
} else if(c == SLIP_ESC_ESC) {
c = SLIP_ESC;
} else {
state = STATE_RUBBISH;
SLIP_STATISTICS(slip_rubbish++);
end = pkt_end; /* remove rubbish */
return 0;
}
state = STATE_OK;
break;
case STATE_OK:
if(c == SLIP_ESC) {
state = STATE_ESC;
return 0;
} else if(c == SLIP_END) {
/*
* We have a new packet, possibly of zero length.
*
* There may already be one packet buffered.
*/
if(end != pkt_end) { /* Non zero length. */
if(begin == pkt_end) { /* None buffered. */
pkt_end = end;
} else {
state = STATE_TWOPACKETS;
SLIP_STATISTICS(slip_twopackets++);
}
process_poll(&slip_process);
return 1;
}
return 0;
}
break;
}
/* add_char: */
{
unsigned next;
next = end + 1;
if(next == RX_BUFSIZE) {
next = 0;
}
if(next == begin) { /* rxbuf is full */
state = STATE_RUBBISH;
SLIP_STATISTICS(slip_overflow++);
end = pkt_end; /* remove rubbish */
return 0;
}
rxbuf[end] = c;
end = next;
}
/* There could be a separate poll routine for this. */
if(c == 'T' && rxbuf[begin] == 'C') {
process_poll(&slip_process);
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/

93
tools/sky/uip6-bridge/dev/slip.h Normal file
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/* -*- 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: slip.h,v 1.1 2009/05/08 12:49:36 joxe Exp $
*/
#ifndef __SLIP_H__
#define __SLIP_H__
#include "contiki.h"
PROCESS_NAME(slip_process);
/**
* Send an IP packet from the uIP buffer with SLIP.
*/
uint8_t slip_send(void);
/**
* Input a SLIP byte.
*
* This function is called by the RS232/SIO device driver to pass
* incoming bytes to the SLIP driver. The function can be called from
* an interrupt context.
*
* For systems using low-power CPU modes, the return value of the
* function can be used to determine if the CPU should be woken up or
* not. If the function returns non-zero, the CPU should be powered
* up. If the function returns zero, the CPU can continue to be
* powered down.
*
* \param c The data that is to be passed to the SLIP driver
*
* \return Non-zero if the CPU should be powered up, zero otherwise.
*/
int slip_input_byte(unsigned char c);
uint8_t slip_write(const void *ptr, int len);
/* Did we receive any bytes lately? */
extern uint8_t slip_active;
/* Statistics. */
extern uint16_t slip_rubbish, slip_twopackets, slip_overflow, slip_ip_drop;
/**
* Set a function to be called when there is activity on the SLIP
* interface; used for detecting if a node is a gateway node.
*/
void slip_set_input_callback(void (*callback)(void));
/**
* Set a function to be called when a packet has been received.
* Default is tcpip_input().
*/
void slip_set_tcpip_input_callback(void (*callback)(void));
/*
* These machine dependent functions and an interrupt service routine
* must be provided externally (slip_arch.c).
*/
void slip_arch_init(unsigned long ubr);
void slip_arch_writeb(unsigned char c);
#endif /* __SLIP_H__ */

108
tools/sky/uip6-bridge/fakeuip.c Normal file
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/* Various stub functions and uIP variables other code might need to
* compile. Allows you to save needing to compile all of uIP in just
* to get a few things */
#include "net/uip.h"
#include <string.h>
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
u8_t uip_buf[UIP_BUFSIZE + 2];
u16_t uip_len;
struct uip_stats uip_stat;
uip_lladdr_t uip_lladdr;
u16_t htons(u16_t val) { return HTONS(val);}
/********** UIP_NETIF.c **********/
void
uip_netif_addr_autoconf_set(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr)
{
/* We consider only links with IEEE EUI-64 identifier or
IEEE 48-bit MAC addresses */
#if (UIP_LLADDR_LEN == 8)
memcpy(ipaddr->u8 + 8, lladdr, UIP_LLADDR_LEN);
ipaddr->u8[8] ^= 0x02;
#elif (UIP_LLADDR_LEN == 6)
memcpy(ipaddr->u8 + 8, lladdr, 3);
ipaddr->u8[11] = 0xff;
ipaddr->u8[12] = 0xfe;
memcpy(ipaddr->u8 + 13, lladdr + 3, 3);
ipaddr->u8[8] ^= 0x02;
#else
/*
UIP_LOG("CAN NOT BUIL INTERFACE IDENTIFIER");
UIP_LOG("THE STACK IS GOING TO SHUT DOWN");
UIP_LOG("THE HOST WILL BE UNREACHABLE");
*/
exit(-1);
#endif
}
/********** UIP.c ****************/
static u16_t
chksum(u16_t sum, const u8_t *data, u16_t len)
{
u16_t t;
const u8_t *dataptr;
const u8_t *last_byte;
dataptr = data;
last_byte = data + len - 1;
while(dataptr < last_byte) { /* At least two more bytes */
t = (dataptr[0] << 8) + dataptr[1];
sum += t;
if(sum < t) {
sum++; /* carry */
}
dataptr += 2;
}
if(dataptr == last_byte) {
t = (dataptr[0] << 8) + 0;
sum += t;
if(sum < t) {
sum++; /* carry */
}
}
/* Return sum in host byte order. */
return sum;
}
static u16_t
upper_layer_chksum(u8_t proto)
{
u16_t upper_layer_len;
u16_t sum;
upper_layer_len = (((u16_t)(UIP_IP_BUF->len[0]) << 8) + UIP_IP_BUF->len[1]) ;
/* First sum pseudoheader. */
/* IP protocol and length fields. This addition cannot carry. */
sum = upper_layer_len + proto;
/* Sum IP source and destination addresses. */
sum = chksum(sum, (u8_t *)&UIP_IP_BUF->srcipaddr, 2 * sizeof(uip_ipaddr_t));
/* Sum TCP header and data. */
sum = chksum(sum, &uip_buf[UIP_IPH_LEN + UIP_LLH_LEN],
upper_layer_len);
return (sum == 0) ? 0xffff : htons(sum);
}
/*---------------------------------------------------------------------------*/
u16_t
uip_icmp6chksum(void)
{
return upper_layer_chksum(UIP_PROTO_ICMP6);
}

881
tools/sky/uip6-bridge/sicslow_ethernet.c Normal file
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/**
* \file sicslow_ethernet.c
* Routines to interface between Ethernet and 6LowPan
*
* \author
* Colin O'Flynn <coflynn@newae.com>
*
* \addtogroup usbstick
*/
/* Copyright (c) 2008 by:
* Colin O'Flynn coflynn@newae.com
* Eric Gnoske egnoske@gmail.com
* Blake Leverett bleverett@gmail.com
* Mike Vidales mavida404@gmail.com
* Kevin Brown kbrown3@uccs.edu
* Nate Bohlmann nate@elfwerks.com
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
/**
\ingroup usbstick
\defgroup sicslowinterop 6LowPan Ethernet Interop
@{
*/
/**
\par Ethernet to 6LowPan Address Translation
It should be obvious that since 802.15.4 addresses are 8
bytes, and 802.3 addresses are 6 bytes, some form of
address translation is needed. These routines provide this
\par 802.3 Address Formats
802.3 MAC addresses used here have this form:
\verbatim
+----+----+----+----+----+----+----+----+
+ + + + + + TR + GL + MU +
+----+----+----+----+----+----+----+----+
\endverbatim
It can be seen this is like a normal ethernet MAC address,
with GL being the Global/Local bit, and MU being the
Multicast/Unicast bit.
The addition is the 'TR' bit, which if set indicates that
the address must be translated when going between 802.15.4
and 802.3.
\par Address Translation
If the TRANSLATE (TR) bit is CLEAR, this means the 5th and
4th LSBytes of the 802.15.4 address are fffe, aka the address
has the hexidecial form:
xxxxxxfffexxxxxx
\note
You should always aim to set the 802.15.4 addresses
of the devices on your network to ones that will
satisfy this requirement. Some examples are:
\note
0x02 23 42 ff fe 73 92 28
\note
0x82 00 82 ff fe cd ee 22
\note
So the most significant octets MUST
have bit 0 CLEAR, bit 1 SET, and bit 2 CLEAR. The remaining
bits in this octet can be anything.
If the TRANSLATE bit is SET, this means the address on the
802.3 side does not directly convert to an 802.15.4 address.
To translate it, the remainder of the octet is used as an
index in a look-up table. This look-up table simply stores
the 4th, 5th, and 8th octet of the 802.15.4 address, and attaches
them to the remaining 5 bytes of the 802.3 address.
In this way there can be 32 different 802.15.4 'prefixes',
requiring only 96 bytes of RAM in a storage table on the
802.3 to 802.15.4 bridge.
Mulitcast addresses on 802.3 are mapped to broadcast addresses on
802.15.4 and vis-versa. Since IPv6 does not use 802.3 broadcast,
this code will drop all 802.3 broadcast packets. They are most
likely something unwanted, such as IPv4 packets that snuck in.
\par Notes on how addresses are stored
An 802.15.4 address will be reported for example as:
0x8877665544332211
Stored in the array as passed to these functions, it will be:
\verbatim
array[0] = 0x88;
array[1] = 0x77;
array[2] = 0x66;
etc.
\endverbatim
An 802.3 address will be reported for example as:
02:43:53:35:45:45
Stored in the array as passed to these functions, it will be:
\verbatim
array[0] = 0x02;
array[1] = 0x43;
array[2] = 0x53;
array[3] = 0x35
etc.
\endverbatim
*/
#include "uip.h"
#include "uip_arp.h" /* For ethernet header structure */
#include "net/rime.h"
#include "net/sicslowpan.h"
#include "sicslow_ethernet.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
//#define PRINTF printf
#define PRINTF(...)
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define ETHBUF(x) ((struct uip_eth_hdr *)x)
//For little endian, such as our friend mr. AVR
#ifndef LSB
#define LSB(u16) (((uint8_t *)&(u16))[0]) //!< Least significant byte of \a u16.
#define MSB(u16) (((uint8_t *)&(u16))[1]) //!< Most significant byte of \a u16.
#endif
usbstick_mode_t usbstick_mode;
uint8_t mac_createSicslowpanLongAddr(uint8_t * ethernet, uip_lladdr_t * lowpan);
uint8_t mac_createEthernetAddr(uint8_t * ethernet, uip_lladdr_t * lowpan);
/* uint8_t memcmp_reverse(uint8_t * a, uint8_t * b, uint8_t num); */
/* void mac_ethhijack_nondata(const struct mac_driver *r); */
/* void mac_ethhijack(const struct mac_driver *r); */
/* extern void (*sicslowmac_snifferhook)(const struct mac_driver *r); */
//! Location of TRANSLATE (TR) bit in Ethernet address
#define TRANSLATE_BIT_MASK (1<<2)
//! Location of LOCAL (GL) bit in Ethernet address
#define LOCAL_BIT_MASK (1<<1)
//! Location of MULTICAST (MU) bit in Ethernet address
#define MULTICAST_BIT_MASK (1<<0)
#define PREFIX_BUFFER_SIZE 32
uint8_t prefixCounter;
uint8_t prefixBuffer[PREFIX_BUFFER_SIZE][3];
/* 6lowpan max size + ethernet header size + 1 */
uint8_t raw_buf[127+ UIP_LLH_LEN +1];
/* void tcpip_input( void ) */
/* { */
/* mac_LowpanToEthernet(); */
/* } */
/**
* \brief Perform any setup needed
*/
/* struct mac_driver * pmac; */
void mac_ethernetSetup(void)
{
usbstick_mode.sicslowpan = 1;
usbstick_mode.sendToRf = 1;
usbstick_mode.translate = 1;
usbstick_mode.raw = 1;
/* sicslowinput = pinput; */
/* pmac = sicslowmac_get_driver(); */
/* pmac->set_receive_function(mac_ethhijack); */
/* sicslowmac_snifferhook = mac_ethhijack_nondata; */
}
/**
* \brief Take a packet received over the ethernet link, and send it
* out over 802.15.4
*/
void mac_ethernetToLowpan(uint8_t * ethHeader)
{
//Dest address
uip_lladdr_t destAddr;
uip_lladdr_t *destAddrPtr = NULL;
PRINTF("Packet type: %x\n", ((struct uip_eth_hdr *) ethHeader)->type);
//RUM doesn't support sending data
#if UIP_CONF_USE_RUM
return;
#endif
//If not IPv6 we don't do anything
if (((struct uip_eth_hdr *) ethHeader)->type != HTONS(UIP_ETHTYPE_IPV6)) {
PRINTF("eth2low: Packet is not IPv6, dropping\n");
/* rndis_stat.txbad++; */
uip_len = 0;
return;
}
// In sniffer mode we don't ever send anything
if (usbstick_mode.sendToRf == 0) {
uip_len = 0;
return;
}
/* IPv6 uses 33-33-xx-xx-xx-xx prefix for multicast ND stuff */
if ( (((struct uip_eth_hdr *) ethHeader)->dest.addr[0] == 0x33) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[1] == 0x33) )
{
PRINTF("eth2low: Ethernet multicast packet received\n");
;//Do Nothing
} else if ( (((struct uip_eth_hdr *) ethHeader)->dest.addr[0] == 0xFF) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[1] == 0xFF) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[2] == 0xFF) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[3] == 0xFF) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[4] == 0xFF) &&
(((struct uip_eth_hdr *) ethHeader)->dest.addr[5] == 0xFF) ) {
/* IPv6 does not use broadcast addresses, hence this should not happen */
PRINTF("eth2low: Ethernet broadcast address received, should not happen?\n");
/* rndis_stat.txbad++; */
uip_len = 0;
return;
} else {
PRINTF("eth2low: Addressed packet received... ");
//Check this returns OK
if (mac_createSicslowpanLongAddr( &(((struct uip_eth_hdr *) ethHeader)->dest.addr[0]), &destAddr) == 0) {
PRINTF(" translation failed\n");
/* rndis_stat.txbad++; */
uip_len = 0;
return;
}
PRINTF(" translated OK\n");
destAddrPtr = &destAddr;
}
//Remove header from length before passing onward
uip_len -= UIP_LLH_LEN;
//Some IP packets have link layer in them, need to change them around!
if (usbstick_mode.translate) {
/* uint8_t transReturn = */
mac_translateIPLinkLayer(ll_802154_type);
PRINTF("IPTranslation: returns %d\n", transReturn);
}
if (usbstick_mode.sendToRf){
tcpip_output(destAddrPtr);
/* rndis_stat.txok++; */
}
uip_len = 0;
}
/**
* \brief Take a packet received over the 802.15.4 link, and send it
* out over ethernet, performing any translations needed.
*/
void mac_LowpanToEthernet(void)
{
/* parsed_frame = sicslowmac_get_frame(); */
//Setup generic ethernet stuff
ETHBUF(uip_buf)->type = htons(UIP_ETHTYPE_IPV6);
//Check for broadcast message
if(rimeaddr_cmp(packetbuf_addr(PACKETBUF_ADDR_RECEIVER), &rimeaddr_null)) {
/* if( ( parsed_frame->fcf->destAddrMode == SHORTADDRMODE) && */
/* ( parsed_frame->dest_addr->addr16 == 0xffff) ) { */
ETHBUF(uip_buf)->dest.addr[0] = 0x33;
ETHBUF(uip_buf)->dest.addr[1] = 0x33;
ETHBUF(uip_buf)->dest.addr[2] = UIP_IP_BUF->destipaddr.u8[12];
ETHBUF(uip_buf)->dest.addr[3] = UIP_IP_BUF->destipaddr.u8[13];
ETHBUF(uip_buf)->dest.addr[4] = UIP_IP_BUF->destipaddr.u8[14];
ETHBUF(uip_buf)->dest.addr[5] = UIP_IP_BUF->destipaddr.u8[15];
} else {
//Otherwise we have a real address
mac_createEthernetAddr((uint8_t *) &(ETHBUF(uip_buf)->dest.addr[0]),
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
}
mac_createEthernetAddr((uint8_t *) &(ETHBUF(uip_buf)->src.addr[0]),
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
//We only do address translation in network mode!
if (usbstick_mode.translate) {
//Some IP packets have link layer in them, need to change them around!
mac_translateIPLinkLayer(ll_8023_type);
}
PRINTF("Low2Eth: Sending packet to ethernet\n");
uip_len += UIP_LLH_LEN;
/* rndis_send(uip_buf, uip_len, 1); */
/* rndis_stat.rxok++; */
/* uip_len = 0; */
}
/**
* \brief Translate IP packet's possible link-layer addresses, passing
* the message to the appropriate higher level function for this
* packet (aka: ICMP)
* \param target The target we want to end up with - either ll_8023_type
* for ethernet, or ll_802154_type for 802.15.4
* \return Returns how successful the translation was
* \retval 0 Addresses, if present, were translated.
* \retval <0 Negative return values indicate various errors, as defined
* by the higher level function.
*/
int8_t mac_translateIPLinkLayer(lltype_t target)
{
#if UIP_LLADDR_LEN == 8
if (UIP_IP_BUF->proto == UIP_PROTO_ICMP6) {
PRINTF("eth2low: ICMP Message detected\n");
return mac_translateIcmpLinkLayer(target);
}
return 0;
#else
return 1;
#endif
}
#include "net/uip-icmp6.h"
#include "net/uip-nd6.h"
typedef struct {
uint8_t type;
uint8_t length;
uint8_t data[16];
} icmp_opts_t;
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define UIP_ICMP_OPTS(x) ((icmp_opts_t *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN + x])
void slide(uint8_t * data, uint8_t length, int16_t slide);
/**
* \brief Translate the link-layer (L2) addresses in an ICMP packet.
* This will just be NA/NS/RA/RS packets currently.
* \param target The target we want to end up with - either ll_8023_type
* for ethernet, or ll_802154_type for 802.15.4
* \return Returns how successful the translation was
* \retval 0 Addresses, if present, were translated.
* \retval -1 ICMP message was unknown type, nothing done.
* \retval -2 ICMP Length does not make sense?
* \retval -3 Unknown 'target' type
*/
int8_t mac_translateIcmpLinkLayer(lltype_t target)
{
uint16_t icmp_opt_offset = 0;
int16_t len = UIP_IP_BUF->len[1] | (UIP_IP_BUF->len[0] << 8);
uint16_t iplen;
uint8_t i;
int16_t sizechange;
uint8_t llbuf[16];
//Figure out offset to start of options
switch(UIP_ICMP_BUF->type) {
case ICMP6_NS:
case ICMP6_NA:
icmp_opt_offset = 24;
break;
case ICMP6_RS:
icmp_opt_offset = 8;
break;
case ICMP6_RA:
icmp_opt_offset = 16;
break;
case ICMP6_REDIRECT:
icmp_opt_offset = 40;
break;
/** Things without link-layer */
case ICMP6_DST_UNREACH:
case ICMP6_PACKET_TOO_BIG:
case ICMP6_TIME_EXCEEDED:
case ICMP6_PARAM_PROB:
case ICMP6_ECHO_REQUEST:
case ICMP6_ECHO_REPLY:
return 0;
break;
default:
return -1;
}
//Figure out length of options
len -= icmp_opt_offset;
//Sanity check
if (len < 8) return -2;
//While we have options to do...
while (len >= 8){
//If we have one of these, we have something useful!
if (((UIP_ICMP_OPTS(icmp_opt_offset)->type) == UIP_ND6_OPT_SLLAO) ||
((UIP_ICMP_OPTS(icmp_opt_offset)->type) == UIP_ND6_OPT_TLLAO) ) {
/* Shrinking the buffer may thrash things, so we store the old
link-layer address */
for(i = 0; i < (UIP_ICMP_OPTS(icmp_opt_offset)->length*8 - 2); i++) {
llbuf[i] = UIP_ICMP_OPTS(icmp_opt_offset)->data[i];
}
//Shrink/grow buffer as needed
if (target == ll_802154_type) {
//Current is 802.3, Hence current link-layer option is 6 extra bytes
sizechange = 8;
slide(UIP_ICMP_OPTS(icmp_opt_offset)->data + 6, len - 6, sizechange);
} else if (target == ll_8023_type) {
/* Current is 802.15.4, Hence current link-layer option is 14 extra
* bytes.
* (Actual LL is 8 bytes, but total option length is in multiples of
* 8 Bytes, hence 8 + 2 = 10. Closest is 16 bytes, then 16 bytes for
* total optional length - 2 bytes for type + length leaves 14 )
*/
sizechange = -8;
slide(UIP_ICMP_OPTS(icmp_opt_offset)->data + 14, len - 14, sizechange);
} else {
return -3; //Uh-oh!
}
//Translate addresses
if (target == ll_802154_type) {
mac_createSicslowpanLongAddr(llbuf, (uip_lladdr_t *)UIP_ICMP_OPTS(icmp_opt_offset)->data);
} else {
mac_createEthernetAddr(UIP_ICMP_OPTS(icmp_opt_offset)->data, (uip_lladdr_t *)llbuf);
}
//Adjust the length
if (target == ll_802154_type) {
UIP_ICMP_OPTS(icmp_opt_offset)->length = 2;
} else {
UIP_ICMP_OPTS(icmp_opt_offset)->length = 1;
}
//Adjust the IP header length, as well as uIP length
iplen = UIP_IP_BUF->len[1] | (UIP_IP_BUF->len[0]<<8);
iplen += sizechange;
len += sizechange;
UIP_IP_BUF->len[1] = (uint8_t)iplen;
UIP_IP_BUF->len[0] = (uint8_t)(iplen >> 8);
uip_len += sizechange;
//We broke ICMP checksum, be sure to fix that
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
//Finally set up next run in while loop
len -= 8 * UIP_ICMP_OPTS(icmp_opt_offset)->length;
icmp_opt_offset += 8 * UIP_ICMP_OPTS(icmp_opt_offset)->length;
} else {
//Not an option we care about, ignore it
len -= 8 * UIP_ICMP_OPTS(icmp_opt_offset)->length;
//This shouldn't happen!
if (UIP_ICMP_OPTS(icmp_opt_offset)->length == 0) {
PRINTF("Option in ND packet has length zero, error?\n");
len = 0;
}
icmp_opt_offset += 8 * UIP_ICMP_OPTS(icmp_opt_offset)->length;
} //If ICMP_OPT is one we care about
} //while(len >= 8)
return 0;
}
/**
* \brief Create a 802.15.4 long address from a 802.3 address
* \param ethernet Pointer to ethernet address
* \param lowpan Pointer to 802.15.4 address
*/
uint8_t mac_createSicslowpanLongAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
{
uint8_t index;
#if UIP_LLADDR_LEN == 8
//Special case - if the address is our address, we just copy over what we know to be
//our 802.15.4 address
/* if (memcmp_reverse((uint8_t *)&rndis_ethernet_addr, ethernet, 6) == 0) { */
if (memcmp((uint8_t *)&uip_lladdr.addr[2], ethernet, 6) == 0) {
memcpy((uint8_t *)lowpan, uip_lladdr.addr, 8);
/* byte_reverse((uint8_t *)lowpan, 8); */
return 1;
}
//Check if translate bit is set, hence we have to look up the prefix
if (ethernet[0] & TRANSLATE_BIT_MASK) {
//Get top bits
index = ethernet[0] >> 3;
//Check this is plausible...
if (index >= prefixCounter) {
return 0;
}
//Copy over prefix
lowpan->addr[0] = prefixBuffer[index][0];
lowpan->addr[3] = prefixBuffer[index][1];
lowpan->addr[4] = prefixBuffer[index][2];
//Bit is clear
//so we copy all six
} else {
lowpan->addr[0] = ethernet[0];
lowpan->addr[3] = 0xff;
lowpan->addr[4] = 0xfe;
}
//Copy over reamining five bytes
lowpan->addr[1] = ethernet[1];
lowpan->addr[2] = ethernet[2];
lowpan->addr[5] = ethernet[3];
lowpan->addr[6] = ethernet[4];
lowpan->addr[7] = ethernet[5];
#else
uint8_t i;
for(i = 0; i < UIP_LLADDR_LEN; i++) {
lowpan->addr[i] = ethernet[i];
}
#endif
return 1;
}
/**
* \brief Create a 802.3 address from a 802.15.4 long address
* \param ethernet Pointer to ethernet address
* \param lowpan Pointer to 802.15.4 address
*/
uint8_t mac_createEthernetAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
{
uint8_t index = 0;
uint8_t i;
/* uint8_t j, match; */
#if UIP_LLADDR_LEN == 8
//Special case - if the address is our address, we just copy over what we know to be
//our 802.3 address
/* if (memcmp_reverse(uip_lladdr.addr, (uint8_t *)lowpan, 8) == 0) { */
if (memcmp(uip_lladdr.addr, (uint8_t *)lowpan, 8) == 0) {
memcpy(ethernet, &uip_lladdr.addr[2], 6);
/* byte_reverse(ethernet, 6); */
return 1;
}
//Check if we need to do anything:
if ((lowpan->addr[3] == 0xff) && (lowpan->addr[4] == 0xfe) &&
((lowpan->addr[0] & TRANSLATE_BIT_MASK) == 0) &&
((lowpan->addr[0] & MULTICAST_BIT_MASK) == 0) &&
(lowpan->addr[0] & LOCAL_BIT_MASK)) {
/** Nope: just copy over 6 bytes **/
ethernet[0] = lowpan->addr[0];
ethernet[1] = lowpan->addr[1];
ethernet[2] = lowpan->addr[2];
ethernet[3] = lowpan->addr[5];
ethernet[4] = lowpan->addr[6];
ethernet[5] = lowpan->addr[7];
} else {
/** Yes: need to store prefix **/
for (i = 0; i < prefixCounter; i++) {
//Check the current prefix - if it fails, check next one
if ((lowpan->addr[0] == prefixBuffer[i][0]) &&
(lowpan->addr[3] == prefixBuffer[i][1]) &&
(lowpan->addr[4] == prefixBuffer[i][2])) {
break;
}
}
index = i;
//Deal with overflow, iron-fist style
if (index >= PREFIX_BUFFER_SIZE) {
index = 0;
prefixCounter = PREFIX_BUFFER_SIZE;
} else {
//Are we making a new one?
if (index == prefixCounter) {
prefixCounter++;
}
}
//Copy the prefix over, no matter if we have a new or old one
prefixBuffer[index][0] = lowpan->addr[0];
prefixBuffer[index][1] = lowpan->addr[3];
prefixBuffer[index][2] = lowpan->addr[4];
//Create ethernet MAC address now
ethernet[1] = lowpan->addr[1];
ethernet[2] = lowpan->addr[2];
ethernet[3] = lowpan->addr[5];
ethernet[4] = lowpan->addr[6];
ethernet[5] = lowpan->addr[7];
ethernet[0] = TRANSLATE_BIT_MASK | LOCAL_BIT_MASK | (index << 3);
}
#else
//Create ethernet MAC address now
for(i = 0; i < UIP_LLADDR_LEN; i++) {
ethernet[i] = lowpan->addr[i];
}
#endif
return 1;
}
/**
* \brief Slide the pointed to memory up a certain amount,
* growing/shrinking a buffer
* \param data Pointer to start of data buffer
* \param length Length of the data buffer
* \param slide How many bytes to slide the buffer up in memory (if +) or
* down in memory (if -)
*/
void slide(uint8_t * data, uint8_t length, int16_t slide)
{
//Sanity checks
if (!length) return;
if (!slide) return;
uint8_t i = 0;
while(length) {
length--;
//If we are sliding up, we do from the top of the buffer down
if (slide > 0) {
*(data + length + slide) = *(data + length);
//If we are sliding down, we do from the bottom of the buffer up
} else {
*(data + slide + i) = *(data + i);
}
i++;
}
}
/*--------------------------------------------------------------------*/
/** \brief Process a received 6lowpan packet. Hijack function.
* \param r The MAC layer
*
* The 6lowpan packet is put in packetbuf by the MAC. This routine calls
* any other needed layers (either 6lowpan, or just raw ethernet dump)
*/
#if 0
void mac_ethhijack(const struct mac_driver *r)
{
if (usbstick_mode.raw) {
mac_802154raw(r);
}
if (usbstick_mode.sicslowpan) {
#if UIP_CONF_USE_RUM
if (parsed_frame->payload[4]) { /* RUM 6lowpan frame type */
#endif
sicslowinput(r);
#if UIP_CONF_USE_RUM
}
#endif
}
}
#endif
#if 0
void mac_ethhijack_nondata(const struct mac_driver *r)
{
if (usbstick_mode.raw)
mac_802154raw(r);
}
#endif
/*--------------------------------------------------------------------*/
/*--------------------------------------------------------------------*/
/** \brief Logs a sent 6lowpan frame
*
* This routine passes a frame
* directly to the ethernet layer without decompressing.
*/
#if 0
void mac_logTXtoEthernet(frame_create_params_t *p,frame_result_t *frame_result)
{
uint8_t sendlen;
/* Make sure we are supposed to do this */
if (usbstick_mode.raw == 0) return;
/* Get the raw frame */
memcpy(&raw_buf[UIP_LLH_LEN], frame_result->frame, frame_result->length);
sendlen = frame_result->length;
//Setup generic ethernet stuff
ETHBUF(raw_buf)->type = htons(UIP_ETHTYPE_802154);
uint64_t tempaddr;
//Check for broadcast message
//if(rimeaddr_cmp((const rimeaddr_t *)destAddr, &rimeaddr_null)) {
if( ( p->fcf.destAddrMode == SHORTADDRMODE) &&
( p->dest_addr.addr16 == 0xffff) ) {
ETHBUF(raw_buf)->dest.addr[0] = 0x33;
ETHBUF(raw_buf)->dest.addr[1] = 0x33;
ETHBUF(raw_buf)->dest.addr[2] = UIP_IP_BUF->destipaddr.u8[12];
ETHBUF(raw_buf)->dest.addr[3] = UIP_IP_BUF->destipaddr.u8[13];
ETHBUF(raw_buf)->dest.addr[4] = UIP_IP_BUF->destipaddr.u8[14];
ETHBUF(raw_buf)->dest.addr[5] = UIP_IP_BUF->destipaddr.u8[15];
} else {
tempaddr = p->dest_addr.addr64;
byte_reverse((uint8_t *)&tempaddr, 8);
//Otherwise we have a real address
mac_createEthernetAddr((uint8_t *) &(ETHBUF(raw_buf)->dest.addr[0]),
(uip_lladdr_t *)&tempaddr);
}
tempaddr = p->src_addr.addr64;
byte_reverse((uint8_t *)&tempaddr, 8);
mac_createEthernetAddr((uint8_t *) &(ETHBUF(raw_buf)->src.addr[0]),
(uip_lladdr_t *)&tempaddr);
PRINTF("Low2Eth: Sending 802.15.4 packet to ethernet\n");
sendlen += UIP_LLH_LEN;
rndis_send(raw_buf, sendlen, 0);
rndis_stat.rxok++;
return;
}
#endif
/*--------------------------------------------------------------------*/
/** \brief Process a received 6lowpan packet.
* \param r The MAC layer
*
* The 6lowpan packet is put in packetbuf by the MAC. This routine passes
* it directly to the ethernet layer without decompressing.
*/
#if 0
void mac_802154raw(const struct mac_driver *r)
{
uint8_t sendlen;
parsed_frame = sicslowmac_get_frame();
/* Get the raw frame */
memcpy(&raw_buf[UIP_LLH_LEN], radio_frame_data(), radio_frame_length());
sendlen = radio_frame_length();
//Setup generic ethernet stuff
ETHBUF(raw_buf)->type = htons(UIP_ETHTYPE_802154);
//Check for broadcast message
//if(rimeaddr_cmp((const rimeaddr_t *)destAddr, &rimeaddr_null)) {
if( ( parsed_frame->fcf->destAddrMode == SHORTADDRMODE) &&
( parsed_frame->dest_addr->addr16 == 0xffff) ) {
ETHBUF(raw_buf)->dest.addr[0] = 0x33;
ETHBUF(raw_buf)->dest.addr[1] = 0x33;
ETHBUF(raw_buf)->dest.addr[2] = UIP_IP_BUF->destipaddr.u8[12];
ETHBUF(raw_buf)->dest.addr[3] = UIP_IP_BUF->destipaddr.u8[13];
ETHBUF(raw_buf)->dest.addr[4] = UIP_IP_BUF->destipaddr.u8[14];
ETHBUF(raw_buf)->dest.addr[5] = UIP_IP_BUF->destipaddr.u8[15];
} else {
//Otherwise we have a real address
mac_createEthernetAddr((uint8_t *) &(ETHBUF(raw_buf)->dest.addr[0]),
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
}
mac_createEthernetAddr((uint8_t *) &(ETHBUF(raw_buf)->src.addr[0]),
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
PRINTF("Low2Eth: Sending 802.15.4 packet to ethernet\n");
sendlen += UIP_LLH_LEN;
rndis_send(raw_buf, sendlen, 1);
rndis_stat.rxok++;
return;
}
#endif
/** @} */
/** @} */

78
tools/sky/uip6-bridge/sicslow_ethernet.h Normal file
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@ -0,0 +1,78 @@
/**
* \file sicslow_ethernet.c
* Routines to interface between Ethernet and 6LowPan
*
* \author
* Colin O'Flynn <coflynn@newae.com>
*
* \addtogroup usbstick
*/
/* Copyright (c) 2008 by:
Colin O'Flynn coflynn@newae.com
Eric Gnoske egnoske@gmail.com
Blake Leverett bleverett@gmail.com
Mike Vidales mavida404@gmail.com
Kevin Brown kbrown3@uccs.edu
Nate Bohlmann nate@elfwerks.com
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
#ifndef SICSLOW_ETHERNET_H
#define SICSLOW_ETHERNET_H
typedef enum {
ll_802154_type,
ll_8023_type
} lltype_t;
typedef struct {
uint8_t sicslowpan :1;
uint8_t sendToRf :1;
uint8_t translate :1;
uint8_t raw :1;
} usbstick_mode_t;
#define UIP_ETHTYPE_802154 0x809A
extern usbstick_mode_t usbstick_mode;
int8_t mac_translateIcmpLinkLayer(lltype_t target);
int8_t mac_translateIPLinkLayer(lltype_t target);
void mac_LowpanToEthernet(void);
void mac_ethernetToLowpan(uint8_t * ethHeader);
void mac_ethernetSetup(void);
/* void mac_802154raw(const struct mac_driver *r); */
/* void mac_logTXtoEthernet(frame_create_params_t *p,frame_result_t *frame_result); */
#endif

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/*
* Copyright (c) 2009, 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.
*
* $Id: uip6-bridge-tap.c,v 1.1 2009/05/08 12:49:36 joxe Exp $
*
*/
/**
* \file
* A brief description of what this file is
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#include "contiki.h"
#include "net/uip.h"
#include "dev/slip.h"
#include "dev/leds.h"
#include "sicslow_ethernet.h"
#include <stdio.h>
#include <string.h>
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
PROCESS(uip6_bridge, "IPv6/6lowpan TAP bridge");
PROCESS(tcpip_process, "tcpip dummy");
AUTOSTART_PROCESSES(&uip6_bridge);
/*---------------------------------------------------------------------------*/
static uint8_t (* outputfunc)(uip_lladdr_t *a);
uint8_t
tcpip_output(uip_lladdr_t *a)
{
if(outputfunc != NULL) {
outputfunc(a);
leds_invert(LEDS_GREEN);
}
return 0;
}
void
tcpip_ipv6_output(void)
{
}
void
tcpip_set_outputfunc(uint8_t (*f)(uip_lladdr_t *))
{
outputfunc = f;
}
PROCESS_THREAD(tcpip_process, ev, data)
{
PROCESS_BEGIN();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/* Packet from SICSLoWPAN */
void
tcpip_input(void)
{
if(uip_len > 0) {
mac_LowpanToEthernet();
if(uip_len > 0) {
/* slip_write(UIP_IP_BUF, uip_len); */
slip_write(uip_buf, uip_len);
leds_invert(LEDS_RED);
uip_len = 0;
}
}
}
/*---------------------------------------------------------------------------*/
/* Packet from SLIP */
static void
slip_tcpip_input(void)
{
/* TODO Should fix this in slip configuration */
memmove(uip_buf, &uip_buf[UIP_LLH_LEN], uip_len);
mac_ethernetToLowpan(uip_buf);
}
/*---------------------------------------------------------------------------*/
static void
slip_activity(void)
{
leds_invert(LEDS_BLUE);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(uip6_bridge, ev, data)
{
PROCESS_BEGIN();
printf("Setting up SLIP\n");
mac_ethernetSetup();
slip_arch_init(BAUD2UBR(115200));
slip_set_input_callback(slip_activity);
slip_set_tcpip_input_callback(slip_tcpip_input);
process_start(&slip_process, NULL);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/