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gnrc_netif: assert that l2addr_len is 0 without address

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If the device provides an address length, but no address it is
obviously faulty.
This commit is contained in:
Martine Lenders 2018-09-24 14:00:16 +02:00 committed by Martine Lenders
parent b0e541593f
commit 05aa8ab66b
1 changed files with 5 additions and 0 deletions
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5
sys/net/gnrc/netif/gnrc_netif.c
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@ -1192,6 +1192,11 @@ static void _update_l2addr_from_dev(gnrc_netif_t *netif)
if (res != -ENOTSUP) {
netif->flags |= GNRC_NETIF_FLAGS_HAS_L2ADDR;
}
else {
/* If no address is provided but still an address length given above,
* we are in an invalid state */
assert(netif->l2addr_len == 0);
}
if (res > 0) {
netif->l2addr_len = res;
}