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gnrc_icmpv6_echo: fix ping for loopback

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At the moment ping is crashing if one pings the loopback address.
This was caused in #8214 when we moved interfaces from `kernel_pid_t`
ID to pointer-based handling, since loopback doesn't evaluate to such
an interface.
This commit is contained in:
Martine Lenders 2018-01-31 15:44:32 +01:00
parent c09ea29376
commit 12fad002da
1 changed files with 7 additions and 1 deletions
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8
sys/net/gnrc/network_layer/icmpv6/echo/gnrc_icmpv6_echo.c
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@ -93,7 +93,13 @@ void gnrc_icmpv6_echo_req_handle(gnrc_netif_t *netif, ipv6_hdr_t *ipv6_hdr,
pkt = hdr;
hdr = gnrc_netif_hdr_build(NULL, 0, NULL, 0);
((gnrc_netif_hdr_t *)hdr->data)->if_pid = netif->pid;
if (netif != NULL) {
((gnrc_netif_hdr_t *)hdr->data)->if_pid = netif->pid;
}
else {
/* ipv6_hdr->dst is loopback address */
((gnrc_netif_hdr_t *)hdr->data)->if_pid = KERNEL_PID_UNDEF;
}
LL_PREPEND(pkt, hdr);