/* functions for sending */
static void _send_unicast(kernel_pid_t iface, uint8_t *dst_l2addr,
uint16_t dst_l2addr_len, gnrc_pktsnip_t *pkt)
{
gnrc_pktsnip_t *netif;
if (pkt->type == GNRC_NETTYPE_NETIF) {
/* great: someone already added a netif_hdr_t we assume it's wrong
* to keep it simple
* XXX: alternative would be to check if gnrc_netif_hdr_t::dst_l2addr_len
* is long enough and only then to throw away the header. This causes
* to much overhead IMHO */
DEBUG("ipv6: removed old interface header\n");
pkt = gnrc_pktbuf_remove_snip(pkt, pkt);
}
DEBUG("ipv6: add interface header to packet\n");
netif = gnrc_netif_hdr_build(NULL, 0, dst_l2addr, dst_l2addr_len);
if (netif == NULL) {
DEBUG("ipv6: error on interface header allocation, dropping packet\n");
gnrc_pktbuf_release(pkt);
return;
}
/* add netif to front of the pkt list */
LL_PREPEND(pkt, netif);
DEBUG("ipv6: send unicast over interface %" PRIkernel_pid "\n", iface);
/* and send to interface */
#ifdef MODULE_NETSTATS_IPV6
gnrc_ipv6_netif_get_stats(iface)->tx_unicast_count++;
#endif
_send_to_iface(iface, pkt);
}
static inline void _send_multicast_over_iface(kernel_pid_t iface, gnrc_pktsnip_t *pkt)
{
DEBUG("ipv6: send multicast over interface %" PRIkernel_pid "\n", iface);
/* mark as multicast */
((gnrc_netif_hdr_t *)pkt->data)->flags |= GNRC_NETIF_HDR_FLAGS_MULTICAST;
/* and send to interface */
_send_to_iface(iface, pkt);
}
static inline void _send_multicast_over_iface(kernel_pid_t iface, gnrc_pktsnip_t *pkt)
{
DEBUG("ipv6: send multicast over interface %" PRIkernel_pid "\n", iface);
/* mark as multicast */
((gnrc_netif_hdr_t *)pkt->data)->flags |= GNRC_NETIF_HDR_FLAGS_MULTICAST;
#ifdef MODULE_NETSTATS_IPV6
gnrc_ipv6_netif_get_stats(iface)->tx_mcast_count++;
#endif
/* and send to interface */
_send_to_iface(iface, pkt);
}
