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gnrc_ipv6: allow sending empty IPv6 packets

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Martine Lenders 2019-03-12 16:14:47 +01:00 committed by Martine Lenders
parent b50ad9ed4c
commit c3efb91181
1 changed files with 2 additions and 2 deletions
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4
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
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@ -348,7 +348,7 @@ static int _fill_ipv6_hdr(gnrc_netif_t *netif, gnrc_pktsnip_t *ipv6)
DEBUG("ipv6: write protect up to payload to calculate checksum\n");
payload = ipv6;
prev = ipv6;
do {
while (_is_ipv6_hdr(payload) && (payload->next != NULL)) {
/* IPv6 header itself was already write-protected in caller function,
* just write protect extension headers and payload header */
if ((payload = gnrc_pktbuf_start_write(payload->next)) == NULL) {
@ -359,7 +359,7 @@ static int _fill_ipv6_hdr(gnrc_netif_t *netif, gnrc_pktsnip_t *ipv6)
}
prev->next = payload;
prev = payload;
} while (_is_ipv6_hdr(payload) && (payload->next != NULL));
}
DEBUG("ipv6: calculate checksum for upper header.\n");
if ((res = gnrc_netreg_calc_csum(payload, ipv6)) < 0) {
if (res != -ENOENT) { /* if there is no checksum we are okay */