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ng_ipv6: add 6in6 encapsulation support

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Martine Lenders 2015-05-01 15:18:08 +02:00 committed by Martine Lenders
parent c94583f931
commit dd1b4ec5a7
1 changed files with 22 additions and 0 deletions
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22
sys/net/network_layer/ng_ipv6/ng_ipv6.c
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@ -53,6 +53,9 @@ static void _send(ng_pktsnip_t *pkt, bool prep_hdr);
/* Main event loop for IPv6 */
static void *_event_loop(void *args);
/* Handles encapsulated IPv6 packets: http://tools.ietf.org/html/rfc2473 */
static void _decapsulate(ng_pktsnip_t *pkt);
kernel_pid_t ng_ipv6_init(void)
{
if (_pid == KERNEL_PID_UNDEF) {
@ -74,6 +77,9 @@ void ng_ipv6_demux(kernel_pid_t iface, ng_pktsnip_t *pkt, uint8_t nh)
ng_icmpv6_demux(iface, pkt);
break;
/* TODO: add extension header handling */
case NG_PROTNUM_IPV6:
_decapsulate(pkt);
break;
default:
break;
}
@ -594,5 +600,21 @@ static void _receive(ng_pktsnip_t *pkt)
ng_ipv6_demux(iface, pkt, hdr->nh);
}
static void _decapsulate(ng_pktsnip_t *pkt)
{
ng_pktsnip_t *ptr = pkt;
pkt->type = NG_NETTYPE_UNDEF; /* prevent payload (the encapsulated packet)
* from being removed */
/* Remove encapsulating IPv6 header */
while ((ptr->next != NULL) && (ptr->next->type == NG_NETTYPE_IPV6)) {
ng_pktbuf_remove_snip(pkt, pkt->next);
}
pkt->type = NG_NETTYPE_IPV6;
_receive(pkt);
}
/** @} */