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gnrc_ipv6: use gnrc_pktbuf_reverse_snips()

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This commit is contained in:
Martine Lenders 2018-10-22 21:11:23 +02:00
parent ac54a2d2b2
commit a5c9f959b5
1 changed files with 7 additions and 18 deletions
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25
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
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@ -839,8 +839,6 @@ static void _receive(gnrc_pktsnip_t *pkt)
}
/* TODO: check if receiving interface is router */
else if (--(hdr->hl) > 0) { /* drop packets that *reach* Hop Limit 0 */
gnrc_pktsnip_t *reversed_pkt = NULL, *ptr = pkt;
DEBUG("ipv6: forward packet to next hop\n");
/* pkt might not be writable yet, if header was given above */
@ -856,23 +854,14 @@ static void _receive(gnrc_pktsnip_t *pkt)
if (netif_hdr != NULL) {
gnrc_pktbuf_remove_snip(pkt, netif_hdr);
}
/* reverse packet snip list order */
while (ptr != NULL) {
gnrc_pktsnip_t *next;
ptr = gnrc_pktbuf_start_write(ptr); /* duplicate if not already done */
if (ptr == NULL) {
DEBUG("ipv6: unable to get write access to packet: dropping it\n");
gnrc_pktbuf_release(reversed_pkt);
gnrc_pktbuf_release(pkt);
return;
}
next = ptr->next;
ptr->next = reversed_pkt;
reversed_pkt = ptr;
ptr = next;
pkt = gnrc_pktbuf_reverse_snips(pkt);
if (pkt != NULL) {
_send(pkt, false);
}
else {
DEBUG("ipv6: unable to reverse pkt from receive order to send "
"order; dropping it\n");
}
_send(reversed_pkt, false);
return;
}
else {