mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-22 10:30:13 +00:00
New USB IPv6 address translation, works better with bridges. Enabled by a #define at start of sicslow_ethernet.c
This commit is contained in:
c_oflynn
parent
15ffaeed86
commit
9f6a069f96
@ -51,7 +51,79 @@
|
||||
@{
|
||||
*/
|
||||
|
||||
//TODO: Should be able to always use this SIMPLE mode, hence can remove the 'complex' mode permanently
|
||||
#define UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS 1
|
||||
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
/**
|
||||
\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 Address Translation on Packets coming FROM Ethernet
|
||||
|
||||
Packets coming from Ethernet, have any addresses inside
|
||||
IPv6 packets (such as 'source link-layer address') expanded
|
||||
by inserting a 0xFF 0xFE sequence as such:
|
||||
|
||||
\verbatim
|
||||
AA:BB:CC:DD:EE:FF
|
||||
|
||||
becomes
|
||||
|
||||
AA:BB:CC:FF:FE:DD:EE:FF
|
||||
\endverbatim
|
||||
|
||||
The 802.15.4 destination address is always derived from the IPv6
|
||||
destination address.
|
||||
|
||||
\par Address Translation on Packets coming FROM 802.15.4
|
||||
|
||||
Packets coming from 802.15.4, have any addresses inside IPv6
|
||||
packets (such as a 'source link-layer address') replaced
|
||||
with the local_ethernet_addr, defined to 3A:3B:3C:3D:3E:3F here.
|
||||
|
||||
The destination ethernet address is performed by performing
|
||||
the reverse process used to make the 802.15.4 addresses before.
|
||||
|
||||
\par Comments on Using This
|
||||
|
||||
Thus you always send IPv6 messages to the local_ethernet_addr,
|
||||
which is 3A:3B:3C:3D:3E:3F. The actual 802.15.4 destination
|
||||
address is based on the lower 64-bits of your IPv6 destination
|
||||
address. IPv6 addresses must always be based on link-layer
|
||||
addresses in the 802.15.4 network for this to work.
|
||||
|
||||
\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
|
||||
*/
|
||||
#else
|
||||
/**
|
||||
\par Ethernet to 6LowPan Address Translation
|
||||
|
||||
@ -96,7 +168,7 @@
|
||||
0x82 00 82 ff fe cd ee 22
|
||||
|
||||
\note
|
||||
So the most significant octets MUST
|
||||
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.
|
||||
|
||||
@ -142,6 +214,7 @@
|
||||
etc.
|
||||
\endverbatim
|
||||
*/
|
||||
#endif
|
||||
|
||||
#include "uip.h"
|
||||
#include "uip_arp.h" //For ethernet header structure
|
||||
@ -174,7 +247,13 @@
|
||||
#define MSB(u16) (((uint8_t *)&(u16))[1]) //!< Most significant byte of \a u16.
|
||||
#endif
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
#define rndis_ethernet_addr local_ethernet_addr
|
||||
static uint64_t local_ethernet_addr = 0x3A3B3C3D3E3F;
|
||||
#else
|
||||
extern uint64_t rndis_ethernet_addr;
|
||||
#endif
|
||||
|
||||
extern void (*pinput)(const struct mac_driver *r);
|
||||
void (*sicslowinput)(const struct mac_driver *r);
|
||||
parsed_frame_t * parsed_frame;
|
||||
@ -182,6 +261,7 @@ 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 mac_createDefaultEthernetAddr(uint8_t * ethernet);
|
||||
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);
|
||||
@ -220,12 +300,12 @@ void mac_ethernetSetup(void)
|
||||
usbstick_mode.sendToRf = 1;
|
||||
usbstick_mode.translate = 1;
|
||||
usbstick_mode.raw = 1;
|
||||
|
||||
|
||||
sicslowinput = pinput;
|
||||
|
||||
|
||||
pmac = sicslowmac_get_driver();
|
||||
pmac->set_receive_function(mac_ethhijack);
|
||||
|
||||
|
||||
pmac = sicslowmac_get_driver();
|
||||
pmac->set_receive_function(mac_ethhijack);
|
||||
sicslowmac_snifferhook = mac_ethhijack_nondata;
|
||||
}
|
||||
|
||||
@ -256,7 +336,7 @@ void mac_ethernetToLowpan(uint8_t * ethHeader)
|
||||
}
|
||||
|
||||
// In sniffer mode we don't ever send anything
|
||||
if (usbstick_mode.sendToRf == 0) {
|
||||
if (usbstick_mode.sendToRf == 0) {
|
||||
uip_len = 0;
|
||||
return;
|
||||
}
|
||||
@ -266,12 +346,12 @@ void mac_ethernetToLowpan(uint8_t * ethHeader)
|
||||
(((struct uip_eth_hdr *) ethHeader)->dest.addr[1] == 0x33) )
|
||||
{
|
||||
PRINTF("eth2low: Ethernet multicast packet received\n");
|
||||
;//Do Nothing
|
||||
;//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[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");
|
||||
@ -279,6 +359,31 @@ void mac_ethernetToLowpan(uint8_t * ethHeader)
|
||||
uip_len = 0;
|
||||
return;
|
||||
} else {
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
/* Simple Address Translation */
|
||||
|
||||
if(memcmp_reverse((uint8_t *)&rndis_ethernet_addr, &(((struct uip_eth_hdr *) ethHeader)->dest.addr[0]), 6) == 0) {
|
||||
|
||||
//Addressed to us: make 802.15.4 address from IPv6 Address
|
||||
destAddr.addr[0] = UIP_IP_BUF->destipaddr.u8[8] ^ 0x02;
|
||||
destAddr.addr[1] = UIP_IP_BUF->destipaddr.u8[9];
|
||||
destAddr.addr[2] = UIP_IP_BUF->destipaddr.u8[10];
|
||||
destAddr.addr[3] = UIP_IP_BUF->destipaddr.u8[11];
|
||||
destAddr.addr[4] = UIP_IP_BUF->destipaddr.u8[12];
|
||||
destAddr.addr[5] = UIP_IP_BUF->destipaddr.u8[13];
|
||||
destAddr.addr[6] = UIP_IP_BUF->destipaddr.u8[14];
|
||||
destAddr.addr[7] = UIP_IP_BUF->destipaddr.u8[15];
|
||||
|
||||
destAddrPtr = &destAddr;
|
||||
} else {
|
||||
//Not addressed to us
|
||||
uip_len = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
/* Complex Address Translation */
|
||||
#else
|
||||
PRINTF("eth2low: Addressed packet received... ");
|
||||
//Check this returns OK
|
||||
if (mac_createSicslowpanLongAddr( &(((struct uip_eth_hdr *) ethHeader)->dest.addr[0]), &destAddr) == 0) {
|
||||
@ -286,9 +391,12 @@ void mac_ethernetToLowpan(uint8_t * ethHeader)
|
||||
rndis_stat.txbad++;
|
||||
uip_len = 0;
|
||||
return;
|
||||
}
|
||||
}
|
||||
PRINTF(" translated OK\n");
|
||||
destAddrPtr = &destAddr;
|
||||
#endif
|
||||
|
||||
|
||||
}
|
||||
|
||||
//Remove header from length before passing onward
|
||||
@ -324,7 +432,7 @@ void mac_LowpanToEthernet(void)
|
||||
|
||||
//Setup generic ethernet stuff
|
||||
ETHBUF(uip_buf)->type = htons(UIP_ETHTYPE_IPV6);
|
||||
|
||||
|
||||
//Check for broadcast message
|
||||
//if(rimeaddr_cmp((const rimeaddr_t *)destAddr, &rimeaddr_null)) {
|
||||
if( ( parsed_frame->fcf->destAddrMode == SHORTADDRMODE) &&
|
||||
@ -340,10 +448,14 @@ void mac_LowpanToEthernet(void)
|
||||
mac_createEthernetAddr((uint8_t *) &(ETHBUF(uip_buf)->dest.addr[0]),
|
||||
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
|
||||
}
|
||||
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
mac_createDefaultEthernetAddr((uint8_t *) &(ETHBUF(uip_buf)->src.addr[0]));
|
||||
#else
|
||||
//Source ethernet depends on node
|
||||
mac_createEthernetAddr((uint8_t *) &(ETHBUF(uip_buf)->src.addr[0]),
|
||||
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
|
||||
#endif
|
||||
|
||||
//We only do address translation in network mode!
|
||||
if (usbstick_mode.translate) {
|
||||
@ -498,7 +610,13 @@ int8_t mac_translateIcmpLinkLayer(lltype_t target)
|
||||
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);
|
||||
if (UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS) {
|
||||
//Simple address translation always sets this as default
|
||||
mac_createDefaultEthernetAddr(UIP_ICMP_OPTS(icmp_opt_offset)->data);
|
||||
} else {
|
||||
//Complex address translation sets this as something special
|
||||
mac_createEthernetAddr(UIP_ICMP_OPTS(icmp_opt_offset)->data, (uip_lladdr_t *)llbuf);
|
||||
}
|
||||
}
|
||||
|
||||
//Adjust the length
|
||||
@ -555,7 +673,21 @@ int8_t mac_translateIcmpLinkLayer(lltype_t target)
|
||||
uint8_t mac_createSicslowpanLongAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
|
||||
{
|
||||
uint8_t index;
|
||||
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
//Easy does it!
|
||||
lowpan->addr[0] = ethernet[0];
|
||||
lowpan->addr[1] = ethernet[1];
|
||||
lowpan->addr[2] = ethernet[2];
|
||||
lowpan->addr[3] = 0xff;
|
||||
lowpan->addr[4] = 0xfe;
|
||||
lowpan->addr[5] = ethernet[3];
|
||||
lowpan->addr[6] = ethernet[4];
|
||||
lowpan->addr[7] = ethernet[5];
|
||||
|
||||
#else //!UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
#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
|
||||
@ -597,13 +729,15 @@ uint8_t mac_createSicslowpanLongAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
|
||||
lowpan->addr[5] = ethernet[3];
|
||||
lowpan->addr[6] = ethernet[4];
|
||||
lowpan->addr[7] = ethernet[5];
|
||||
|
||||
#else
|
||||
|
||||
#else //UIP_LLADDR != 8
|
||||
uint8_t i;
|
||||
for(i = 0; i < UIP_LLADDR_LEN; i++) {
|
||||
lowpan->addr[i] = ethernet[i];
|
||||
}
|
||||
#endif
|
||||
#endif //UIP_LLADDR == 8
|
||||
|
||||
#endif //UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
return 1;
|
||||
}
|
||||
@ -619,9 +753,22 @@ uint8_t mac_createEthernetAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
|
||||
uint8_t index = 0;
|
||||
uint8_t i;
|
||||
//uint8_t i,j, match;
|
||||
|
||||
|
||||
|
||||
#if UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
/** 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 //!UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
#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((uint8_t *)&macLongAddr, (uint8_t *)lowpan, 8) == 0) {
|
||||
@ -654,7 +801,8 @@ uint8_t mac_createEthernetAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
|
||||
//Check the current prefix - if it fails, check next one
|
||||
|
||||
|
||||
if ((lowpan->addr[0] == prefixBuffer[i][0]) &&
|
||||
|
||||
if ((lowpan->addr[0] == prefixBuffer[i][0]) &&
|
||||
(lowpan->addr[3] == prefixBuffer[i][1]) &&
|
||||
(lowpan->addr[4] == prefixBuffer[i][2])) {
|
||||
break;
|
||||
@ -690,18 +838,30 @@ uint8_t mac_createEthernetAddr(uint8_t * ethernet, uip_lladdr_t * lowpan)
|
||||
|
||||
ethernet[0] = TRANSLATE_BIT_MASK | LOCAL_BIT_MASK | (index << 3);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#else //UIP_LLADDR_LEN != 8
|
||||
|
||||
//Create ethernet MAC address now
|
||||
for(i = 0; i < UIP_LLADDR_LEN; i++) {
|
||||
ethernet[i] = lowpan->addr[i];
|
||||
}
|
||||
#endif
|
||||
#endif //UIP_LLADDR_LEN == 8
|
||||
|
||||
#endif //UIP_CONF_SIMPLE_JACKDAW_ADDR_TRANS
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief Create a 802.3 address (default)
|
||||
* \param ethernet Pointer to ethernet address
|
||||
*/
|
||||
uint8_t mac_createDefaultEthernetAddr(uint8_t * ethernet)
|
||||
{
|
||||
memcpy(ethernet, &rndis_ethernet_addr, 6);
|
||||
byte_reverse(ethernet, 6);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* \brief Slide the pointed to memory up a certain amount,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user