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/*
* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for
* more details.
*/
/**
* @ingroup sys_shell_commands.h
* @{
*
* @file
*
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#include <stdio.h>
#include <string.h>
#include "kernel_types.h"
#include "net/ipv6/addr.h"
#include "net/gnrc/ipv6/nc.h"
#include "net/gnrc/netif.h"
#include "thread.h"
/* maximum length of L2 address */
#define MAX_L2_ADDR_LEN (8U)
static void _print_nc_state(gnrc_ipv6_nc_t *entry)
{
switch (entry->flags & GNRC_IPV6_NC_STATE_MASK) {
case GNRC_IPV6_NC_STATE_UNMANAGED:
printf("UNMANAGED ");
break;
case GNRC_IPV6_NC_STATE_UNREACHABLE:
printf("UNREACHABLE ");
break;
case GNRC_IPV6_NC_STATE_INCOMPLETE:
printf("INCOMPLETE ");
break;
case GNRC_IPV6_NC_STATE_STALE:
printf("STALE ");
break;
case GNRC_IPV6_NC_STATE_DELAY:
printf("DELAY ");
break;
case GNRC_IPV6_NC_STATE_PROBE:
printf("PROBE ");
break;
case GNRC_IPV6_NC_STATE_REACHABLE:
printf("REACHABLE ");
break;
default:
printf("UNKNOWN ");
break;
}
}
static void _print_nc_type(gnrc_ipv6_nc_t *entry)
{
switch (entry->flags & GNRC_IPV6_NC_TYPE_MASK) {
case GNRC_IPV6_NC_TYPE_GC:
printf("GC");
break;
case GNRC_IPV6_NC_TYPE_TENTATIVE:
printf("TENT");
break;
case GNRC_IPV6_NC_TYPE_REGISTERED:
printf("REG");
break;
default:
printf("-");
break;
}
}
static bool _is_iface(kernel_pid_t iface)
{
#ifdef MODULE_GNRC_NETIF
kernel_pid_t ifs[GNRC_NETIF_NUMOF];
size_t numof = gnrc_netif_get(ifs);
for (size_t i = 0; i < numof && i < GNRC_NETIF_NUMOF; i++) {
if (ifs[i] == iface) {
return true;
}
}
return false;
#else
return (thread_get(iface) != NULL);
#endif
}
static int _ipv6_nc_list(void)
{
char ipv6_str[IPV6_ADDR_MAX_STR_LEN];
char l2addr_str[3 * MAX_L2_ADDR_LEN];
puts("IPv6 address if L2 address state type");
puts("------------------------------------------------------------------------------");
for (gnrc_ipv6_nc_t *entry = gnrc_ipv6_nc_get_next(NULL);
entry != NULL;
entry = gnrc_ipv6_nc_get_next(entry)) {
printf("%-30s %2" PRIkernel_pid " %-24s ",
ipv6_addr_to_str(ipv6_str, &entry->ipv6_addr, sizeof(ipv6_str)),
entry->iface,
gnrc_netif_addr_to_str(l2addr_str, sizeof(l2addr_str),
entry->l2_addr, entry->l2_addr_len));
_print_nc_state(entry);
_print_nc_type(entry);
puts("");
}
return 0;
}
static inline kernel_pid_t _get_iface(void)
{
kernel_pid_t ifs[GNRC_NETIF_NUMOF];
size_t ifnum = gnrc_netif_get(ifs);
return (ifnum > 1) ? KERNEL_PID_UNDEF : ifs[0];
}
static int _ipv6_nc_add(int argc, char **argv)
{
char *ipv6_addr_str;
char *l2_addr_str = NULL;
kernel_pid_t iface = KERNEL_PID_UNDEF;
ipv6_addr_t ipv6_addr;
uint8_t l2_addr[MAX_L2_ADDR_LEN];
size_t l2_addr_len = 0;
switch (argc) {
case 1:
iface = _get_iface();
ipv6_addr_str = argv[0]; /* store for output */
l2_addr_len = 0;
break;
case 2:
ipv6_addr_str = argv[0]; /* store for output */
if (ipv6_addr_from_str(&ipv6_addr, ipv6_addr_str) == NULL) {
iface = atoi(argv[0]);
ipv6_addr_str = argv[1];
l2_addr_len = 0;
}
else {
iface = _get_iface();
l2_addr_str = argv[1];
}
break;
default:
iface = atoi(argv[0]);
ipv6_addr_str = argv[1];
l2_addr_str = argv[2];
break;
}
if (!_is_iface(iface)) {
puts("error: invalid interface given.");
return 1;
}
if (ipv6_addr_from_str(&ipv6_addr, ipv6_addr_str) == NULL) {
puts("error: unable to parse IPv6 address.");
return 1;
}
if ((l2_addr_str != NULL) && (l2_addr_len = gnrc_netif_addr_from_str(l2_addr, sizeof(l2_addr),
l2_addr_str)) == 0) {
puts("error: unable to parse link-layer address.");
return 1;
}
if (gnrc_ipv6_nc_add(iface, &ipv6_addr, l2_addr, l2_addr_len, 0) == NULL) {
puts("error: unable to add address to neighbor cache.");
return 1;
}
printf("success: added IPv6 address %s to neighbor cache\n", ipv6_addr_str);
return 0;
}
static int _ipv6_nc_del(char *ipv6_addr_str)
{
ipv6_addr_t ipv6_addr;
if (ipv6_addr_from_str(&ipv6_addr, ipv6_addr_str) == NULL) {
puts("error: unable to parse IPv6 address.");
return 1;
}
gnrc_ipv6_nc_remove(KERNEL_PID_UNDEF, &ipv6_addr);
printf("success: removed %s from neighbor cache\n", ipv6_addr_str);
return 0;
}
static int _ipv6_nc_reset(void)
{
gnrc_ipv6_nc_t *tmp = NULL;
for (gnrc_ipv6_nc_t *entry = gnrc_ipv6_nc_get_next(NULL);
entry != NULL;
tmp = entry, entry = gnrc_ipv6_nc_get_next(entry)) {
if (tmp) {
gnrc_ipv6_nc_remove(tmp->iface, &tmp->ipv6_addr);
}
}
/* remove last entry */
if (tmp) {
gnrc_ipv6_nc_remove(tmp->iface, &tmp->ipv6_addr);
}
printf("success: reset neighbor cache\n");
return 0;
}
int _ipv6_nc_manage(int argc, char **argv)
{
if ((argc == 1) || (strcmp("list", argv[1]) == 0)) {
return _ipv6_nc_list();
}
if (argc > 1) {
if ((argc > 2) && (strcmp("add", argv[1]) == 0)) {
return _ipv6_nc_add(argc - 2, &argv[2]);
}
if ((argc > 2) && (strcmp("del", argv[1]) == 0)) {
return _ipv6_nc_del(argv[2]);
}
if (strcmp("reset", argv[1]) == 0) {
return _ipv6_nc_reset();
}
}
printf("usage: %s [list]\n"
" or: %s add [<iface pid>] <ipv6_addr> <l2_addr>\n"
" * <iface pid> is optional if only one interface exists.\n"
" or: %s del <ipv6_addr>\n"
" or: %s reset\n", argv[0], argv[0], argv[0], argv[0]);
return 1;
}
int _ipv6_nc_routers(int argc, char **argv)
{
kernel_pid_t iface = KERNEL_PID_UNDEF;
char ipv6_str[IPV6_ADDR_MAX_STR_LEN];
if (argc > 1) {
iface = atoi(argv[1]);
if (!_is_iface(iface)) {
printf("usage: %s [<iface pid>]\n", argv[0]);
return 1;
}
}
puts("if Router state type");
puts("---------------------------------------------------");
for (gnrc_ipv6_nc_t *entry = gnrc_ipv6_nc_get_next_router(NULL);
entry != NULL;
entry = gnrc_ipv6_nc_get_next_router(entry)) {
if ((iface != KERNEL_PID_UNDEF) && (iface != entry->iface)) {
continue;
}
printf("%2" PRIkernel_pid " %-30s ", entry->iface,
ipv6_addr_to_str(ipv6_str, &entry->ipv6_addr, sizeof(ipv6_str)));
_print_nc_state(entry);
_print_nc_type(entry);
puts("");
}
return 0;
}
/**
* @}
*/
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