Merge pull request #4714 from OlegHahm/6lo_nd_lookup

6lo nd: prefer NCEs over FIB entries
pr/gpio
Oleg Hahm 7 years ago
commit ca8dbbac20

@ -190,7 +190,8 @@ gnrc_ipv6_nc_t *gnrc_ipv6_nc_get(kernel_pid_t iface, const ipv6_addr_t *ipv6_add
for (int i = 0; i < GNRC_IPV6_NC_SIZE; i++) {
if (((ncache[i].iface == KERNEL_PID_UNDEF) || (iface == KERNEL_PID_UNDEF) ||
(iface == ncache[i].iface)) && ipv6_addr_equal(&(ncache[i].ipv6_addr), ipv6_addr)) {
(iface == ncache[i].iface)) &&
ipv6_addr_equal(&(ncache[i].ipv6_addr), ipv6_addr)) {
DEBUG("ipv6_nc: Found entry for %s on interface %" PRIkernel_pid
" (0 = all interfaces) [%p]\n",
ipv6_addr_to_str(addr_str, ipv6_addr, sizeof(addr_str)),

@ -133,13 +133,14 @@ kernel_pid_t gnrc_sixlowpan_nd_next_hop_l2addr(uint8_t *l2addr, uint8_t *l2addr_
next_hop = ipv6_ext_rh_next_hop(hdr);
#endif
#ifdef MODULE_FIB
kernel_pid_t fib_iface;
ipv6_addr_t next_hop_actual; /* FIB copies address into this variable */
/* don't look-up link local addresses in FIB */
if ((next_hop == NULL) && !ipv6_addr_is_link_local(dst)) {
size_t next_hop_size = sizeof(ipv6_addr_t);
uint32_t next_hop_flags = 0;
if ((next_hop == NULL) &&
(fib_get_next_hop(&gnrc_ipv6_fib_table, &iface, next_hop_actual.u8, &next_hop_size,
(fib_get_next_hop(&gnrc_ipv6_fib_table, &fib_iface, next_hop_actual.u8, &next_hop_size,
&next_hop_flags, (uint8_t *)dst,
sizeof(ipv6_addr_t), 0) >= 0) &&
(next_hop_size == sizeof(ipv6_addr_t))) {
@ -150,6 +151,11 @@ kernel_pid_t gnrc_sixlowpan_nd_next_hop_l2addr(uint8_t *l2addr, uint8_t *l2addr_
#ifdef MODULE_GNRC_SIXLOWPAN_ND_ROUTER
/* next hop determination: https://tools.ietf.org/html/rfc6775#section-6.5.4 */
nc_entry = gnrc_ipv6_nc_get(iface, dst);
#ifdef MODULE_FIB
if ((next_hop != NULL) && (nc_entry == NULL)) {
nc_entry = gnrc_ipv6_nc_get(fib_iface, dst);
}
#endif
/* if NCE found */
if (nc_entry != NULL) {
gnrc_ipv6_netif_t *ipv6_if = gnrc_ipv6_netif_get(nc_entry->iface);

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