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ndp: assertify pio prefix len check and include 0 and 128

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This commit is contained in:
Cenk Gündoğan 2015-09-12 13:11:01 +02:00
parent 93a92dfa03
commit 14d899bf83
1 changed files with 3 additions and 2 deletions
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5
sys/net/gnrc/network_layer/ndp/internal/gnrc_ndp_internal.c
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@ -346,8 +346,9 @@ void gnrc_ndp_internal_send_rtr_sol(kernel_pid_t iface, ipv6_addr_t *dst)
static bool _pio_from_iface_addr(gnrc_pktsnip_t **res, gnrc_ipv6_netif_addr_t *addr,
gnrc_pktsnip_t *next)
{
if (((addr->prefix_len - 1U) < 127U) && /* 0 < prefix_len < 128 */
!ipv6_addr_is_unspecified(&addr->addr) &&
assert(((uint8_t) addr->prefix_len) <= 128U);
if (!ipv6_addr_is_unspecified(&addr->addr) &&
!ipv6_addr_is_link_local(&addr->addr) &&
!gnrc_ipv6_netif_addr_is_non_unicast(&addr->addr)) {
DEBUG(" - PIO for %s/%" PRIu8 "\n", ipv6_addr_to_str(addr_str, &addr->addr,