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Merge pull request #2856 from authmillenon/ng_ipv6/enh/1-if-opt

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ng_ipv6: optimize multi-interface support
This commit is contained in:
Martine Lenders 2015-04-24 19:01:29 +02:00
commit e2f6fb6b0f
1 changed files with 31 additions and 0 deletions
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31
sys/net/network_layer/ng_ipv6/ng_ipv6.c
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@ -245,6 +245,7 @@ static int _fill_ipv6_hdr(kernel_pid_t iface, ng_pktsnip_t *ipv6,
DEBUG("ipv6: calculate checksum for upper header.\n");
#if NG_NETIF_NUMOF > 1
if (payload->users > 1) {
ng_pktsnip_t *ptr = ipv6;
@ -262,6 +263,7 @@ static int _fill_ipv6_hdr(kernel_pid_t iface, ng_pktsnip_t *ipv6,
ptr = ptr->next;
}
}
#endif /* NG_NETIF_NUMOF */
if ((res = ng_netreg_calc_csum(payload, ipv6)) < 0) {
if (res != -ENOENT) { /* if there is no checksum we are okay */
@ -289,6 +291,7 @@ static void _send_multicast(kernel_pid_t iface, ng_pktsnip_t *pkt,
{
ng_pktsnip_t *netif;
#if NG_NETIF_NUMOF > 1
/* netif header not present: send over all interfaces */
if (iface == KERNEL_PID_UNDEF) {
size_t ifnum;
@ -354,6 +357,34 @@ static void _send_multicast(kernel_pid_t iface, ng_pktsnip_t *pkt,
_send_multicast_over_iface(iface, pkt, netif);
}
#else /* NG_NETIF_NUMOF */
if (iface == KERNEL_PID_UNDEF) {
/* allocate interface header */
netif = ng_netif_hdr_build(NULL, 0, NULL, 0);
if (netif == NULL) {
DEBUG("ipv6: error on interface header allocation, "
"dropping packet\n");
ng_pktbuf_release(pkt);
return;
}
LL_PREPEND(pkt, netif);
}
else {
netif = pkt;
}
if (prep_hdr) {
if (_fill_ipv6_hdr(iface, ipv6, payload) < 0) {
/* error on filling up header */
ng_pktbuf_release(pkt);
return;
}
}
_send_multicast_over_iface(iface, pkt, netif);
#endif /* NG_NETIF_NUMOF */
}
static void _send(ng_pktsnip_t *pkt, bool prep_hdr)