Add RPL nodes and border router to minimal-net platform (cygwin only)

This commit is contained in:
David Kopf 2011-06-28 08:19:48 -04:00
parent 6749281a87
commit c48b7ab78d
10 changed files with 843 additions and 78 deletions

View File

@ -158,7 +158,8 @@ make_tcp_stats(void *arg)
struct httpd_state *s = (struct httpd_state *)arg;
conn = &uip_conns[s->u.count];
#if UIP_CONF_IPV6
#if UIP_CONF_IPV6
{
char buf[48];
httpd_sprint_ip6(conn->ripaddr, buf);
return snprintf((char *)uip_appdata, uip_mss(),
@ -171,6 +172,7 @@ make_tcp_stats(void *arg)
conn->timer,
(uip_outstanding(conn))? '*':' ',
(uip_stopped(conn))? '!':' ');
}
#else
return snprintf((char *)uip_appdata, uip_mss(),
"<tr align=\"center\"><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
@ -227,6 +229,114 @@ PT_THREAD(processes(struct httpd_state *s, char *ptr))
}
PSOCK_END(&s->sout);
}
#if UIP_CONF_IPV6
/*---------------------------------------------------------------------------*/
#define HTTPD_STRING_ATTR
#define httpd_snprintf snprintf
#define httpd_cgi_sprint_ip6 httpd_sprint_ip6
static const char httpd_cgi_addrh[] HTTPD_STRING_ATTR = "<code>";
static const char httpd_cgi_addrf[] HTTPD_STRING_ATTR = "</code>[Room for %u more]";
static const char httpd_cgi_addrb[] HTTPD_STRING_ATTR = "<br>";
static const char httpd_cgi_addrn[] HTTPD_STRING_ATTR = "(none)<br>";
extern uip_ds6_nbr_t uip_ds6_nbr_cache[];
extern uip_ds6_route_t uip_ds6_routing_table[];
extern uip_ds6_netif_t uip_ds6_if;
static unsigned short
make_addresses(void *p)
{
uint8_t i,j=0;
uint16_t numprinted;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
for (i=0; i<UIP_DS6_ADDR_NB;i++) {
if (uip_ds6_if.addr_list[i].isused) {
j++;
// numprinted += httpd_cgi_sprint_ip6(uip_ds6_if.addr_list[i].ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrb);
}
}
//if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf, UIP_DS6_ADDR_NB-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(addresses(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_addresses, s->u.ptr);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_neighbors(void *p)
{
uint8_t i,j=0;
uint16_t numprinted;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
for (i=0; i<UIP_DS6_NBR_NB;i++) {
if (uip_ds6_nbr_cache[i].isused) {
j++;
// numprinted += httpd_cgi_sprint_ip6(uip_ds6_nbr_cache[i].ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrb);
}
}
//if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf,UIP_DS6_NBR_NB-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(neighbors(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_neighbors, s->u.ptr);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_routes(void *p)
{
static const char httpd_cgi_rtes1[] HTTPD_STRING_ATTR = "(%u (via ";
static const char httpd_cgi_rtes2[] HTTPD_STRING_ATTR = ") %us<br>";
static const char httpd_cgi_rtes3[] HTTPD_STRING_ATTR = ")<br>";
uint8_t i,j=0;
uint16_t numprinted;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
for (i=0; i<UIP_DS6_ROUTE_NB;i++) {
if (uip_ds6_routing_table[i].isused) {
j++;
// numprinted += httpd_cgi_sprint_ip6(uip_ds6_routing_table[i].ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes1, uip_ds6_routing_table[i].length);
// numprinted += httpd_cgi_sprint_ip6(uip_ds6_routing_table[i].nexthop, uip_appdata + numprinted);
if(uip_ds6_routing_table[i].state.lifetime < 3600*24) {
//if(uip_ds6_routing_table[i].state.lifetime < 3600) {
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes2, uip_ds6_routing_table[i].state.lifetime);
} else {
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes3);
}
}
}
if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf,UIP_DS6_ROUTE_NB-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(routes(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_routes, s->u.ptr);
PSOCK_END(&s->sout);
}
#endif /* UIP_CONF_IPV6 */
/*---------------------------------------------------------------------------*/
void
httpd_cgi_add(struct httpd_cgi_call *c)
@ -242,10 +352,19 @@ httpd_cgi_add(struct httpd_cgi_call *c)
}
}
/*---------------------------------------------------------------------------*/
#if UIP_CONF_IPV6
static const char adrs_name[] HTTPD_STRING_ATTR = "addresses";
static const char nbrs_name[] HTTPD_STRING_ATTR = "neighbors";
static const char rtes_name[] HTTPD_STRING_ATTR = "routes";
#endif
HTTPD_CGI_CALL(file, file_name, file_stats);
HTTPD_CGI_CALL(tcp, tcp_name, tcp_stats);
HTTPD_CGI_CALL(proc, proc_name, processes);
#if UIP_CONF_IPV6
HTTPD_CGI_CALL(adrs, adrs_name, addresses);
HTTPD_CGI_CALL(nbrs, nbrs_name, neighbors);
HTTPD_CGI_CALL(rtes, rtes_name, routes);
#endif
void
httpd_cgi_init(void)
@ -253,5 +372,10 @@ httpd_cgi_init(void)
httpd_cgi_add(&file);
httpd_cgi_add(&tcp);
httpd_cgi_add(&proc);
#if UIP_CONF_IPV6
httpd_cgi_add(&adrs);
httpd_cgi_add(&nbrs);
httpd_cgi_add(&rtes);
#endif
}
/*---------------------------------------------------------------------------*/

View File

@ -13,6 +13,7 @@
<p class="menu">
<a href="/">Front page</a><br>
<a href="status.shtml">Status</a><br>
<a href="files.shtml">File statistics</a><br>
<a href="tcp.shtml">Network connections</a><br>
<a href="processes.shtml">System processes</a><br>

View File

@ -13,6 +13,7 @@
<p class="menu">
<a href="/">Front page</a><br>
<a href="status.shtml">Status</a><br>
<a href="files.shtml">File statistics</a><br>
<a href="tcp.shtml">Network connections</a><br>
<a href="processes.shtml">System processes</a><br>

View File

@ -0,0 +1,11 @@
%!: /header.html
<h4>Addresses</h4>
%! addresses
<h4>Neighbors</h4>
%! neighbors
<h4>Routes</h4>
%! routes
<h4>Sensors</h4>
%! sensors
</table>
%! file-stats .

View File

@ -198,6 +198,10 @@ dio_input(void)
buffer_length = uip_len - uip_l2_l3_icmp_hdr_len;
#if RPL_CONF_ADJUST_LLH_LEN
buffer_length+=UIP_LLH_LEN; //Add jackdaw, minimal-net ethernet header
#endif
/* Process the DIO base option. */
i = 0;
buffer = UIP_ICMP_PAYLOAD;
@ -490,6 +494,9 @@ dao_input(void)
buffer = UIP_ICMP_PAYLOAD;
buffer_length = uip_len - uip_l2_l3_icmp_hdr_len;
#if RPL_CONF_ADJUST_LLH_LEN
buffer_length+=UIP_LLH_LEN; //Add jackdaw, minimal-net ethernet header
#endif
pos = 0;
instance_id = buffer[pos++];
@ -687,6 +694,9 @@ dao_ack_input(void)
buffer = UIP_ICMP_PAYLOAD;
buffer_length = uip_len - uip_l2_l3_icmp_hdr_len;
#if RPL_CONF_ADJUST_LLH_LEN
buffer_length+=UIP_LLH_LEN; //Add jackdaw, minimal-net ethernet header
#endif
instance_id = buffer[0];
sequence = buffer[2];

View File

@ -83,6 +83,39 @@ pollhandler(void)
uip_len = 0;
}
}
#ifdef UIP_FALLBACK_INTERFACE
process_poll(&wpcap_process);
uip_len = wfall_poll();
if(uip_len > 0) {
#if 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)

View File

@ -30,7 +30,6 @@
*
* Author: Oliver Schmidt <ol.sc@web.de>
*
* $Id: wpcap.c,v 1.20 2010/10/19 20:30:47 oliverschmidt Exp $
*/
#define WIN32_LEAN_AND_MEAN
@ -41,6 +40,7 @@
#include <stdio.h>
#include <stdlib.h>
#ifdef __CYGWIN__
#include <alloca.h>
#else /* __CYGWIN__ */
@ -59,6 +59,63 @@
#include "net/wpcap.h"
#if UIP_CONF_IPV6
#include <ws2tcpip.h>
struct in6_addr addr6;
char addr6str[64];
/*---------------------------------------------------------------------------*/
uint8_t
issame_ip6addr(struct in6_addr addr1, struct in6_addr addr2)
{
return ((addr1.s6_addr32[0]==addr2.s6_addr32[0]) &&
(addr1.s6_addr32[1]==addr2.s6_addr32[1]) &&
(addr1.s6_addr32[2]==addr2.s6_addr32[2]) &&
(addr1.s6_addr32[3]==addr2.s6_addr32[3]) );
}
/*---------------------------------------------------------------------------*/
uint8_t
iszero_ip6addr(struct in6_addr addr)
{
return ((addr.s6_addr32[0]==0) &&
(addr.s6_addr32[1]==0) &&
(addr.s6_addr32[2]==0) &&
(addr.s6_addr32[3]==0) );
}
/*---------------------------------------------------------------------------*/
uint8_t
sprint_ip6addr(struct in6_addr addr, char * result)
{
unsigned char i = 0;
unsigned char zerocnt = 0;
unsigned char numprinted = 0;
char * starting = result;
*result++='[';
while (numprinted < 8) {
if ((addr.s6_addr16[i] == 0) && (zerocnt == 0)) {
while(addr.s6_addr16[zerocnt + i] == 0) zerocnt++;
if (zerocnt == 1) {
*result++ = '0';
numprinted++;
break;
}
i += zerocnt;
numprinted += zerocnt;
} else {
result += sprintf(result, "%x", (unsigned int) uip_ntohs(addr.s6_addr16[i]));
i++;
numprinted++;
}
if (numprinted != 8) *result++ = ':';
}
*result++=']';
*result=0;
return (result - starting);
}
#endif /* UIP_CONF_IPV6 */
#ifdef __CYGWIN__
__attribute__((dllimport)) extern char **__argv[];
#endif /* __CYGWIN__ */
@ -101,6 +158,45 @@ static struct pcap *(* pcap_open_live)(char *, int, int, int, char *);
static int (* pcap_next_ex)(struct pcap *, struct pcap_pkthdr **, unsigned char **);
static int (* pcap_sendpacket)(struct pcap *, unsigned char *, int);
#ifdef UIP_FALLBACK_INTERFACE
static struct pcap *pfall;
struct in_addr addrfall;
#if UIP_CONF_IPV6
struct in_addr6 addrfall6;
#endif
/*---------------------------------------------------------------------------*/
static void
init(void)
{
/* Nothing to do here */
}
/*---------------------------------------------------------------------------*/
u8_t wfall_send(uip_lladdr_t *lladdr);
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
static void
output(void)
{
#if 0
if(uip_ipaddr_cmp(&last_sender, &UIP_IP_BUF->srcipaddr)) {
/* Do not bounce packets back to fallback if the packet was received from it */
PRINTF("fallback: Destination off-link but no route src=");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF(" dst=");
PRINT6ADDR(&UIP_IP_BUF->destipaddr);
PRINTF("\n");
} else {
#endif
PRINTF("FUT: %u\n", uip_len);
wfall_send(0);
}
const struct uip_fallback_interface rpl_interface = {
init, output
};
#endif
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
#define IPBUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
@ -113,49 +209,6 @@ error_exit(char *message)
}
/*---------------------------------------------------------------------------*/
static void
init_pcap(struct in_addr addr)
{
struct pcap_if *interfaces;
struct pcap_addr *paddr;
char error[256];
if(pcap_findalldevs(&interfaces, error) == -1) {
error_exit(error);
}
while(interfaces != NULL) {
log_message("init_pcap: found interface: ", interfaces->description);
if(interfaces->addresses != NULL) {
for(paddr = interfaces->addresses;
paddr != NULL;
paddr = paddr->next) {
if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET) {
struct in_addr interface_addr;
interface_addr = ((struct sockaddr_in *)paddr->addr)->sin_addr;
log_message("init_pcap: with address: ", inet_ntoa(interface_addr));
if(interface_addr.s_addr == addr.s_addr) {
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
return;
}
}
}
}
interfaces = interfaces->next;
}
if(interfaces == NULL) {
error_exit("no interface found with specified ip address\n");
}
}
/*---------------------------------------------------------------------------*/
static void
set_ethaddr(struct in_addr addr)
{
PIP_ADAPTER_ADDRESSES adapters;
@ -214,25 +267,301 @@ set_ethaddr(struct in_addr addr)
error_exit("no adapter found with ip addr specified on cmdline\n");
}
}
#if UIP_CONF_IPV6
/*---------------------------------------------------------------------------*/
static void
set_ethaddr6(struct in_addr6 addr)
{
PIP_ADAPTER_ADDRESSES adapters;
ULONG size = 0;
if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_ANYCAST |
GAA_FLAG_SKIP_MULTICAST |
GAA_FLAG_SKIP_DNS_SERVER,
NULL, NULL, &size) != ERROR_BUFFER_OVERFLOW) {
error_exit("error on access to adapter list size\n");
}
adapters = alloca(size);
if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_ANYCAST |
GAA_FLAG_SKIP_MULTICAST |
GAA_FLAG_SKIP_DNS_SERVER,
NULL, adapters, &size) != ERROR_SUCCESS) {
error_exit("error on access to adapter list\n");
}
while(adapters != NULL) {
char buffer[256];
WideCharToMultiByte(CP_ACP, 0, adapters->Description, -1,
buffer, sizeof(buffer), NULL, NULL);
log_message("set_ethaddr: found adapter: ", buffer);
if(adapters->FirstUnicastAddress != NULL &&
adapters->FirstUnicastAddress->Address.lpSockaddr != NULL &&
adapters->FirstUnicastAddress->Address.lpSockaddr->sa_family == AF_INET6) {
struct in_addr6 adapter_addr;
adapter_addr = ((struct sockaddr_in6 *)adapters->FirstUnicastAddress->Address.lpSockaddr)->sin6_addr;
sprint_ip6addr(adapter_addr, addr6str);
log_message("set_ethaddr: with ipv6 address: : ", addr6str);
if(issame_ip6addr(adapter_addr,addr6)) {
if(adapters->PhysicalAddressLength != 6) {
error_exit("ip addr specified on cmdline does not belong to an ethernet card\n");
}
wsprintf(buffer, "%02X-%02X-%02X-%02X-%02X-%02X",
adapters->PhysicalAddress[0], adapters->PhysicalAddress[1],
adapters->PhysicalAddress[2], adapters->PhysicalAddress[3],
adapters->PhysicalAddress[4], adapters->PhysicalAddress[5]);
log_message("set_ethaddr: ethernetaddr: ", buffer);
#if UIP_CONF_IPV6
// int i;for (i=0;i<6;i++) uip_ethaddr.addr[i] = adapters->PhysicalAddress[i]; //does this need doing?
#else
uip_setethaddr((*(struct uip_eth_addr *)adapters->PhysicalAddress));
#endif
break;
}
}
adapters = adapters->Next;
}
if(adapters == NULL) {
error_exit("no adapter found with ip addr specified on cmdline\n");
}
}
#endif
/*---------------------------------------------------------------------------*/
static void
init_pcap(struct in_addr addr)
{
struct pcap_if *interfaces;
struct pcap_addr *paddr;
char error[256];
if(pcap_findalldevs(&interfaces, error) == -1) {
error_exit(error);
}
while(interfaces != NULL) {
log_message("init_pcap: found interface: ", interfaces->description);
if(interfaces->addresses != NULL) {
for(paddr = interfaces->addresses;
paddr != NULL;
paddr = paddr->next) {
if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET) {
struct in_addr interface_addr;
interface_addr = ((struct sockaddr_in *)paddr->addr)->sin_addr;
log_message("init_pcap: with address: ", inet_ntoa(interface_addr));
if(interface_addr.s_addr == addr.s_addr) {
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
#ifdef UIP_FALLBACK_INTERFACE
log_message("init_pcap: Opened as primary interface","");
#endif
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
set_ethaddr(addr);
#ifdef UIP_FALLBACK_INTERFACE
}
if (pfall && pcap) return;
if(interface_addr.s_addr == addrfall.s_addr) {
pfall = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pfall == NULL) {
error_exit(error);
}
log_message("init_pcap: Opened as fallback interface","");
if (pcap) return;
}
#else
return;
}
#endif
#if UIP_CONF_IPV6
} else if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET6) {
struct in6_addr interface_addr;
interface_addr = ((struct sockaddr_in6 *)paddr->addr)->sin6_addr;
sprint_ip6addr(interface_addr, addr6str);
log_message("init_pcap: with ipv6 address: ", addr6str);
if (issame_ip6addr(interface_addr, addr6)) {
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
#ifdef UIP_FALLBACK_INTERFACE
log_message("init_pcap: Opened as primary interface","");
#endif
set_ethaddr6(addr6);
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
#ifdef UIP_FALLBACK_INTERFACE
}
if (pfall && pcap) return; //exit when we have both interfaces
if (issame_ip6addr(interface_addr, addrfall6)) {
pfall = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pfall == NULL) {
error_exit(error);
}
log_message("init_pcap: Opened as fallback interface","");
if (pcap) return;
}
#else
return;
}
#endif
#endif /* UIP_CONF_IPV6 */
}
}
}
interfaces = interfaces->next;
}
if(interfaces == NULL) {
error_exit("no interface found with specified ip address\n");
}
}
/*---------------------------------------------------------------------------*/
void
wpcap_init(void)
{
struct in_addr addr;
addr.s_addr = INADDR_NONE; //255.255.255.255
#ifdef UIP_FALLBACK_INTERFACE
addrfall.s_addr = INADDR_NONE;
#endif
/* Pick up possible ip addresses from command line */
#ifdef __CYGWIN__
addr.s_addr = inet_addr((*__argv)[1]);
#else /* __CYGWIN__ */
addr.s_addr = inet_addr(__argv[1]);
#endif /* __CYGWIN__ */
if(addr.s_addr == INADDR_NONE) {
// error_exit("usage: <program> <ip addr of ethernet card to share>\n");
addr.s_addr = inet_addr("10.10.10.10");
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", inet_ntoa(addr));
} else {
log_message("wpcap_init:cmdline address: ", inet_ntoa(addr));
if ((*__argv)[1]) {
addr.s_addr = inet_addr((*__argv)[1]);
#if UIP_CONF_IPV6
uiplib_ipaddrconv((*__argv)[1],(uip_ipaddr_t*) &addr6.s6_addr);
#endif
#ifdef UIP_FALLBACK_INTERFACE
if ((*__argv)[2]) {
addrfall.s_addr = inet_addr((*__argv)[2]);
#if UIP_CONF_IPV6
uiplib_ipaddrconv((*__argv)[2],(uip_ipaddr_t*) &addrfall6.s6_addr);
#endif
}
#endif
}
#else /* __CYGWIN__ */
/* VC++ build on win32 platform. Currently the platform has no ipv6 support */
addr.s_addr = inet_addr(__argv[1]);
#if UIP_CONF_IPV6
if((__argv)[1])
uiplib_ipaddrconv((__argv)[1],(uip_ipaddr_t*) &addr6.s6_addr);
#endif
#ifdef UIP_FALLBACK_INTERFACE
addrfall.s_addr = inet_addr(__argv[2]);
#if UIP_CONF_IPV6
if((__argv)[2])
uiplib_ipaddrconv((__argv)[2],(uip_ipaddr_t*) &addrfall6.s6_addr);
#endif
#endif
#endif /* __CYGWIN__ */
#if DEBUG
log_message("wpcap_init:Passed ipv4 ", inet_ntoa(addr));
sprint_ip6addr(addr6, addr6str);
log_message("wpcap_init:Passed ipv6 ", addr6str);
#ifdef UIP_FALLBACK_INTERFACE
log_message("wpcap_init:Passed fallback ipv4 ", inet_ntoa(addrfall));
sprint_ip6addr(addrfall6, addr6str);
log_message("wpcap_init:Passed fallback ipv6 ", addr6str);
#endif
#endif
/* Use build defaults if not enough addresses passed */
#if UIP_CONF_IPV6
#ifdef UIP_FALLBACK_INTERFACE
if(addrfall.s_addr == INADDR_NONE) {
if(iszero_ip6addr(addrfall6)) {
#ifdef WPCAP_WPCAP_FALLBACK_ADDRESS
addrfall.s_addr = inet_addr(WPCAP_FALLBACK_ADDRESS);
// if(addrfall.s_addr == INADDR_NONE) { //use ipv6 if contiki-conf.h override
uiplib_ipaddrconv(WPCAP_FALLBACK_ADDRESS,(uip_ipaddr_t*) &addrfall6.s6_addr);
// }
#else
// addrfall.s_addr = inet_addr("10.2.10.10");
uiplib_ipaddrconv("bbbb::1",(uip_ipaddr_t*) &addrfall6.s6_addr);
#endif
}
}
#endif
if(addr.s_addr == INADDR_NONE) {
if(iszero_ip6addr(addr6)) {
#ifdef WPCAP_INTERFACE_ADDRESS
addr.s_addr = inet_addr(WPCAP_INTERFACE_ADDRESS);
// if(addr.s_addr == INADDR_NONE) {
uiplib_ipaddrconv(WPCAP_INTERFACE_ADDRESS,(uip_ipaddr_t*) &addr6.s6_addr);
// }
#else
addr.s_addr = inet_addr("10.10.10.10"); //prefer ipv4 default for legacy compatibility
// uiplib_ipaddrconv("aaaa::1",(uip_ipaddr_t*) &addr6.s6_addr);
#endif
#ifdef UIP_FALLBACK_INTERFACE
log_message("usage: <program> <ip addr of interface> <ip addr of fallback>\n","");
if(addr.s_addr != INADDR_NONE) {
log_message("-->I'll try interface address ", inet_ntoa(addr));
} else {
sprint_ip6addr(addr6, addr6str);
log_message("-->I'll try interface address ", addr6str);
}
if(addrfall.s_addr != INADDR_NONE) {
log_message("--> and fallback address ", inet_ntoa(addrfall));
} else {
sprint_ip6addr(addrfall6, addr6str);
log_message("--> and fallback address ", addr6str);
}
#else
if(addr.s_addr != INADDR_NONE) {
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", inet_ntoa(addr));
} else {
sprint_ip6addr(addr6, addr6str);
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", addr6str);
}
#endif
}
}
#else /* ip4 build */
if(addr.s_addr == INADDR_NONE) {
#ifdef WPCAP_INTERFACE_ADDRESS
addr.s_addr = inet_addr(WPCAP_INTERFACE_ADDRESS);
#else
addr.s_addr = inet_addr("10.10.10.10");
#endif
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", inet_ntoa(addr));
}
#endif /* UIP_CONF_IPV6 */
#if DEBUG
log_message("wpcap_init:Using ipv4 ", inet_ntoa(addr));
sprint_ip6addr(addr6, addr6str);
log_message("wpcap_init:Using ipv6 ", addr6str);
#ifdef UIP_FALLBACK_INTERFACE
log_message("wpcap_init:Using fallback ipv4 ", inet_ntoa(addrfall));
sprint_ip6addr(addrfall6, addr6str);
log_message("wpcap_init:Using fallback ipv6 ", addr6str);
#endif
#endif
// log_message("wpcap_init:cmdline address: ", inet_ntoa(addr));
wpcap = LoadLibrary("wpcap.dll");
pcap_findalldevs = (int (*)(struct pcap_if **, char *))
GetProcAddress(wpcap, "pcap_findalldevs");
@ -248,8 +577,7 @@ wpcap_init(void)
error_exit("error on access to winpcap library\n");
}
init_pcap(addr);
set_ethaddr(addr);
init_pcap(addr);
}
@ -268,6 +596,44 @@ wpcap_poll(void)
}
#if UIP_CONF_IPV6
/* Since pcap_setdirection(PCAP_D_IN) is not implemented in winpcap all outgoing packets
* will be echoed back. The stack will ignore any packets not addressed to it, but initial
* ipv6 neighbor solicitations are addressed to everyone and the echoed NS sent on startup
* would be processed as a conflicting NS race which would cause a stack shutdown.
* So discard all packets with our source address (packet starts destaddr, srcaddr, ...)
*
*/
int i;
for (i=0;i<UIP_LLADDR_LEN;i++) if (*(packet+UIP_LLADDR_LEN+i)!=uip_lladdr.addr[i]) break;
if (i==UIP_LLADDR_LEN) {
PRINTF("SIN: Discarding echoed packet\n");
return 0;
}
#endif /* UIP_CONF_IPV6 */
if(packet_header->caplen > UIP_BUFSIZE) {
return 0;
}
// PRINTF("SIN: %lu\n", packet_header->caplen);
CopyMemory(uip_buf, packet, packet_header->caplen);
return (u16_t)packet_header->caplen;
}
#ifdef UIP_FALLBACK_INTERFACE
u16_t
wfall_poll(void)
{
struct pcap_pkthdr *packet_header;
unsigned char *packet;
switch(pcap_next_ex(pfall, &packet_header, &packet)) {
case -1:
error_exit("error on fallback poll\n");
case 0:
return 0;
}
#if UIP_CONF_IPV6
/* Since pcap_setdirection(PCAP_D_IN) is not implemented in winpcap all outgoing packets
* will be echoed back. The stack will ignore any packets not addressed to it, but initial
* ipv6 neighbor solicitations are addressed to everyone and the echoed NS sent on startup
@ -286,16 +652,46 @@ wpcap_poll(void)
if(packet_header->caplen > UIP_BUFSIZE) {
return 0;
}
PRINTF("FIN: %lu\n", packet_header->caplen);
CopyMemory(uip_buf, packet, packet_header->caplen);
return (u16_t)packet_header->caplen;
}
#endif
/*---------------------------------------------------------------------------*/
#if UIP_CONF_IPV6
u8_t
wpcap_send(uip_lladdr_t *lladdr)
{
// if(lladdr == NULL) { //when fallback used this gets ptr to lladdr of all zeroes on forwarded packets
if(1) {
/* 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);
PRINTF("SUT: %u\n", uip_len);
PRINTF("Src= %02x %02x %02x %02x %02x %02x",(&BUF->src)->addr[0],(&BUF->src)->addr[1],(&BUF->src)->addr[2],(&BUF->src)->addr[3],(&BUF->src)->addr[4],(&BUF->src)->addr[5]);
PRINTF(" Dst= %02x %02x %02x %02x %02x %02x",(&BUF->dest)->addr[0],(&BUF->dest)->addr[1],(&BUF->dest)->addr[2],(&BUF->dest)->addr[3],(&BUF->dest)->addr[4],(&BUF->dest)->addr[5]);
PRINTF(" Type=%04x\n",BUF->type);
BUF->type = UIP_HTONS(UIP_ETHTYPE_IPV6);
uip_len += sizeof(struct uip_eth_hdr);
if(pcap_sendpacket(pcap, uip_buf, uip_len) == -1) {
error_exit("error on send\n");
}
return 0;
}
#ifdef UIP_FALLBACK_INTERFACE
u8_t
wfall_send(uip_lladdr_t *lladdr)
{
if(lladdr == NULL) {
/* the dest must be multicast*/
@ -309,17 +705,18 @@ wpcap_send(uip_lladdr_t *lladdr)
memcpy(&BUF->dest, lladdr, UIP_LLADDR_LEN);
}
memcpy(&BUF->src, &uip_lladdr, UIP_LLADDR_LEN);
PRINTF("Src= %02x %02x %02x %02x %02x %02x",(&BUF->src)->addr[0],(&BUF->src)->addr[1],(&BUF->src)->addr[2],(&BUF->src)->addr[3],(&BUF->src)->addr[4],(&BUF->src)->addr[5]);
PRINTF(" Dst= %02x %02x %02x %02x %02x %02x",(&BUF->dest)->addr[0],(&BUF->dest)->addr[1],(&BUF->dest)->addr[2],(&BUF->dest)->addr[3],(&BUF->dest)->addr[4],(&BUF->dest)->addr[5]);
PRINTF(" Type=%04x\n",BUF->type);
PRINTF("FUT: %u\n", uip_len);
PRINTF("Srcf= %02x %02x %02x %02x %02x %02x",(&BUF->src)->addr[0],(&BUF->src)->addr[1],(&BUF->src)->addr[2],(&BUF->src)->addr[3],(&BUF->src)->addr[4],(&BUF->src)->addr[5]);
PRINTF(" Dstf= %02x %02x %02x %02x %02x %02x",(&BUF->dest)->addr[0],(&BUF->dest)->addr[1],(&BUF->dest)->addr[2],(&BUF->dest)->addr[3],(&BUF->dest)->addr[4],(&BUF->dest)->addr[5]);
PRINTF(" Typef=%04x\n",BUF->type);
BUF->type = UIP_HTONS(UIP_ETHTYPE_IPV6);
uip_len += sizeof(struct uip_eth_hdr);
if(pcap_sendpacket(pcap, uip_buf, uip_len) == -1) {
error_exit("error on send\n");
if(pcap_sendpacket(pfall, uip_buf, uip_len) == -1) {
error_exit("error on fallback send\n");
}
return 0;
}
#endif
#else /* UIP_CONF_IPV6 */
void
wpcap_send(void)

View File

@ -38,8 +38,10 @@
void wpcap_init(void);
u16_t wpcap_poll(void);
u16_t wfall_poll(void);
#if UIP_CONF_IPV6
u8_t wpcap_send(uip_lladdr_t *lladdr);
u8_t wfall_send(uip_lladdr_t *lladdr);
#else
void wpcap_send(void);
#endif

View File

@ -51,6 +51,74 @@ typedef uint32_t u32_t;
typedef int32_t s32_t;
typedef unsigned short uip_stats_t;
#if UIP_CONF_IPV6
/* The Windows build uses wpcap to connect to a host interface. It finds the interface by scanning for
* an address, which can be specified here and overridden with the command line.
* An ip4 or ip6 address can be used; this allows turning off the ip4 protocol on the interface.
* The existing turorials use an ipv4 address, so we leave that as the default.
* Non-windows builds don't use this define.
*/
//#define WPCAP_INTERFACE_ADDRESS "fdfd::1" //10.10.10.10 is the default (even for ipv6)
/* Minimal-net gets a 6 byte ethernet MAC assigned in uip.c, currently {0x00,0x06,0x98,0x00,0x02,0x32}
* This gets converted to a link layer address of [fe80::206:98ff:fe00:232]
* You could change the uip.c address when running multiple instances, however HARD_CODED_ADDRESS
* can also specify a different MAC address if any of the last three bytes are non-zero. It can also
* specify a prefix if any of the first four longs are nonzero. RPL builds use this to pass a prefix
* to the border router and also to ensure it has a different link-layer address from the RPL end node.
* HARD_CODED_ADDRESS can also be changed in /platform/minimal-net/contiki-main.c so as not to force complete
* rebuilds when making multiple instances of a minimal-net client.
*/
//#define HARD_CODED_ADDRESS "::10" //assign link-layer address fe80::ff:fe00:10, wait for RA or RPL prefix
//#define HARD_CODED_ADDRESS "fdfd::" //assign prefix; address becomes fdfd::206:98ff:fe00:232
//#define HARD_CODED_ADDRESS "fdfd::10" //assign prefix and ipv6 address fdfd::ff:fe00:10
/* RPL currently works only on Windows. *nix would require converting the tun interface to two pcap tees. */
#define UIP_CONF_IPV6_RPL 0
#define RPL_BORDER_ROUTER 0
#endif
#if UIP_CONF_IPV6_RPL
/* RPL motes use the uip.c link layer address or optionally the harded coded address (but without the prefix!)
* Different instances can be made by changing the link layer portion of HARD_CODED_ADDRESS in contiki-main.c
* Rename them to e.g. webserver6.10, webserver6.11, ...
* They should all attach to a minimal-net rpl border that uses the same primary interface.
*/
#define RPL_CONF_ADJUST_LLH_LEN 1
#define HARD_CODED_ADDRESS "bbbb::10" //the prefix is ignored for a rpl end node
#if RPL_BORDER_ROUTER
/* RPL border router accepts packets from the host through the fallback and directs them to
* the primary interface. Thus the fallback and rpl dag prefix must be the same. The prefix of
* the primary interface does not matter!
* Rename this build to e.g. webrouter. Then on Windows create two loopback interfaces, bbbb:: and fdfd::
* Attach the RPL end nodes to fdfd:: and the webrouter to fdfd:: with bbbb:: as the fallback.
* Direct browser to bbbb::ff:fe00:1/status.html, bbbb::ff:fe00:10/status.html, bbbb::ff:fe00:20/status.html.
* The traffic will go through the bbbb:: interface to the router, then out the fdfd:: interface to the end
* nodes. The end nodes must be explicitly added as neighbors to avoid a blocking NS
* netsh interface ipv6 add neighbor bbbb::ff:fe00:10 33-33-ff-33-44-10 interface=16 (# of the bbbb interface)
* netsh interface ipv6 add neighbor bbbb::ff:fe00:20 33-33-ff-33-44-20 interface=16 (# of the bbbb interface)
*
* Instead of using the fdfd:: loopback it is also possible to attach the border router to another interface,
* e.g. the jackdaw RNDIS <-> repeater. Then RPL will configure on the radio network and the RF motes will
* be reached through bbbb::<mote link layer address>.
* Possibly minimal-net RPL motes could also be added to this interface?
*
*/
#define UIP_CONF_ROUTER 1
//#define RPL_CONF_STATS 0
//#define UIP_CONF_BUFFER_SIZE 1300
#undef UIP_FALLBACK_INTERFACE
#define UIP_FALLBACK_INTERFACE rpl_interface
//#define WPCAP_FALLBACK_ADDRESS "bbbb::1" //bbbb::1 is the default fallback prefix
#undef HARD_CODED_ADDRESS
#define HARD_CODED_ADDRESS "bbbb::1" //bbbb::ff:fe00:1 is the RPL border router default
#define UIP_CONF_ND6_SEND_RA 0
#define UIP_CONF_ND6_REACHABLE_TIME 600000
#define UIP_CONF_ND6_RETRANS_TIMER 10000
#endif
#endif
#define UIP_CONF_MAX_LISTENPORTS 40
#define UIP_CONF_MAX_CONNECTIONS 40
@ -70,10 +138,17 @@ typedef unsigned short uip_stats_t;
#define UIP_CONF_IPV6_QUEUE_PKT 1
#define UIP_CONF_IPV6_CHECKS 1
#define UIP_CONF_IPV6_REASSEMBLY 1
#define UIP_CONF_NETIF_MAX_ADDRESSES 3
#define UIP_CONF_ND6_MAX_PREFIXES 3
#define UIP_CONF_ND6_MAX_NEIGHBORS 4
#define UIP_CONF_ND6_MAX_DEFROUTERS 2
//#define UIP_CONF_NETIF_MAX_ADDRESSES 5
//#define UIP_CONF_ND6_MAX_PREFIXES 3
//#define UIP_CONF_ND6_MAX_NEIGHBORS 40
//#define UIP_CONF_ND6_MAX_DEFROUTERS 2
#define UIP_CONF_DS6_NBR_NBU 100
#define UIP_CONF_DS6_DEFRT_NBU 2
#define UIP_CONF_DS6_PREFIX_NBU 5
#define UIP_CONF_DS6_ROUTE_NBU 100
#define UIP_CONF_DS6_ADDR_NBU 10
#define UIP_CONF_DS6_MADDR_NBU 0
#define UIP_CONF_DS6_AADDR_NBU 0
#endif /* UIP_CONF_IPV6 */
typedef unsigned long clock_time_t;

View File

@ -57,6 +57,72 @@ PROCINIT(&etimer_process, &tcpip_process, &wpcap_process, &serial_line_process);
PROCINIT(&etimer_process, &tapdev_process, &tcpip_process, &serial_line_process);
#endif /* __CYGWIN__ */
#if RPL_BORDER_ROUTER
#include "net/rpl/rpl.h"
uint16_t dag_id[] = {0x1111, 0x1100, 0, 0, 0, 0, 0, 0x0011};
PROCESS(border_router_process, "RPL Border Router");
PROCESS_THREAD(border_router_process, ev, data)
{
PROCESS_BEGIN();
PROCESS_PAUSE();
{ rpl_dag_t *dag;
char buf[sizeof(dag_id)];
memcpy(buf,dag_id,sizeof(dag_id));
dag = rpl_set_root((uip_ip6addr_t *)buf);
/* Assign separate addresses to the uip stack and the host network interface, but with the same prefix */
/* E.g. bbbb::ff:fe00:200 to the stack and bbbb::1 to the host *fallback* network interface */
/* Otherwise the host will trap packets intended for the stack, just as the stack will trap packets intended for the host */
/* $ifconfig usb0 -arp on Ubuntu to skip the neighbor solicitations. Add explicit neighbors on other OSs */
if(dag != NULL) {
printf("Created a new RPL dag\n");
#if UIP_CONF_ROUTER_RECEIVE_RA
//Contiki stack will shut down until assigned an address from the interface RA
//Currently this requires changes in the core rpl-icmp6.c to pass the link-local RA broadcast
#else
void sprint_ip6(uip_ip6addr_t addr);
int i;
uip_ip6addr_t ipaddr;
#ifdef HARD_CODED_ADDRESS
uiplib_ipaddrconv(HARD_CODED_ADDRESS, &ipaddr);
#else
uip_ip6addr(&ipaddr, 0xbbbb, 0, 0, 0, 0, 0, 0, 0x1);
#endif
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
rpl_set_prefix(dag, &ipaddr, 64);
for (i=0;i<UIP_DS6_ADDR_NB;i++) {
if (uip_ds6_if.addr_list[i].isused) {
printf("IPV6 Address: ");sprint_ip6(uip_ds6_if.addr_list[i].ipaddr);printf("\n");
}
}
#endif
}
}
/* The border router runs with a 100% duty cycle in order to ensure high
packet reception rates. */
// NETSTACK_MAC.off(1);
while(1) {
PROCESS_YIELD();
/* Local and global dag repair can be done from ? */
// rpl_set_prefix(rpl_get_dag(RPL_ANY_INSTANCE), &ipaddr, 64);
// rpl_repair_dag(rpl_get_dag(RPL_ANY_INSTANCE));
}
PROCESS_END();
}
#endif /* RPL_BORDER_ROUTER */
#if UIP_CONF_IPV6
/*---------------------------------------------------------------------------*/
void
@ -97,6 +163,32 @@ sprint_ip6(uip_ip6addr_t addr)
int
main(void)
{
#if UIP_CONF_IPV6
/* A hard coded address overrides the stack default MAC address to allow multiple instances.
* uip6.c defines it as {0x00,0x06,0x98,0x00,0x02,0x32} giving an ipv6 address of [fe80::206:98ff:fe00:232]
* We make it simpler, {0x02,0x00,0x00 + the last three bytes of the hard coded address (if any are nonzero).
* HARD_CODED_ADDRESS can be defined in the contiki-conf.h file, or here to allow quick builds using different addresses.
* If HARD_CODED_ADDRESS has a prefix it also applied, unless built as a RPL end node.
* E.g. bbbb::12:3456 becomes fe80::ff:fe12:3456 and prefix bbbb::/64 if non-RPL
* ::10 becomes fe80::ff:fe00:10 and prefix awaits RA or RPL formation
* bbbb:: gives an address of bbbb::206:98ff:fe00:232 if non-RPL
*/
//#define HARD_CODED_ADDRESS "bbbb::40"
#ifdef HARD_CODED_ADDRESS
{
uip_ipaddr_t ipaddr;
uiplib_ipaddrconv(HARD_CODED_ADDRESS, &ipaddr);
if ((ipaddr.u8[13]!=0) || (ipaddr.u8[14]!=0) || (ipaddr.u8[15]!=0)) {
if (sizeof(uip_lladdr)==6) { //Minimal-net uses ethernet MAC
uip_lladdr.addr[0]=0x02;uip_lladdr.addr[1]=0;uip_lladdr.addr[2]=0;
uip_lladdr.addr[3]=ipaddr.u8[13];;
uip_lladdr.addr[4]=ipaddr.u8[14];
uip_lladdr.addr[5]=ipaddr.u8[15];
}
}
}
#endif
#endif
process_init();
@ -106,6 +198,13 @@ main(void)
autostart_start(autostart_processes);
#if RPL_BORDER_ROUTER
process_start(&border_router_process, NULL);
printf("Border Router Process started\n");
#elif UIP_CONF_IPV6_RPL
printf("RPL enabled\n");
#endif
/* Set default IP addresses if not specified */
#if !UIP_CONF_IPV6
uip_ipaddr_t addr;
@ -131,23 +230,35 @@ main(void)
}
printf("Def. Router: %d.%d.%d.%d\n", uip_ipaddr_to_quad(&addr));
#else /* !UIP_CONF_IPV6 */
uint8_t i;
#else /* UIP_CONF_IPV6 */
#if !UIP_CONF_IPV6_RPL
#ifdef HARD_CODED_ADDRESS
uip_ipaddr_t ipaddr;
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uiplib_ipaddrconv(HARD_CODED_ADDRESS, &ipaddr);
if ((ipaddr.u16[0]!=0) || (ipaddr.u16[1]!=0) || (ipaddr.u16[2]!=0) || (ipaddr.u16[3]!=0)) {
#if UIP_CONF_ROUTER
uip_ds6_prefix_add(&ipaddr, UIP_DEFAULT_PREFIX_LEN, 0, 0, 0, 0);
uip_ds6_prefix_add(&ipaddr, UIP_DEFAULT_PREFIX_LEN, 0, 0, 0, 0);
#else /* UIP_CONF_ROUTER */
uip_ds6_prefix_add(&ipaddr, UIP_DEFAULT_PREFIX_LEN, 0);
uip_ds6_prefix_add(&ipaddr, UIP_DEFAULT_PREFIX_LEN, 0);
#endif /* UIP_CONF_ROUTER */
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
// printf("IP6 Address: ");sprint_ip6(ipaddr);printf("\n");
#if !UIP_CONF_IPV6_RPL
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
#endif
}
#endif /* HARD_CODED_ADDRESS */
#endif
#if !RPL_BORDER_ROUTER //Border router process prints addresses later
{ uint8_t i;
for (i=0;i<UIP_DS6_ADDR_NB;i++) {
if (uip_ds6_if.addr_list[i].isused) {
printf("IPV6 Address: ");sprint_ip6(uip_ds6_if.addr_list[i].ipaddr);printf("\n");
printf("IPV6 Addresss: ");sprint_ip6(uip_ds6_if.addr_list[i].ipaddr);printf("\n");
}
}
}
#endif
#endif /* !UIP_CONF_IPV6 */
/* Make standard output unbuffered. */