static enum net_verdict net_bt_recv(struct net_if *iface, struct net_buf *buf)
{
uint32_t src;
uint32_t dst;
NET_DBG("iface %p buf %p len %u", iface, buf, net_buf_frags_len(buf));
/* Uncompress will drop the current fragment. Buf ll src/dst address
* will then be wrong and must be updated according to the new fragment.
*/
src = net_nbuf_ll_src(buf)->addr ?
net_nbuf_ll_src(buf)->addr - net_nbuf_ll(buf) : 0;
dst = net_nbuf_ll_dst(buf)->addr ?
net_nbuf_ll_dst(buf)->addr - net_nbuf_ll(buf) : 0;
if (!net_6lo_uncompress(buf)) {
NET_DBG("Packet decompression failed");
return NET_DROP;
}
net_nbuf_ll_src(buf)->addr = src ? net_nbuf_ll(buf) + src : NULL;
net_nbuf_ll_dst(buf)->addr = dst ? net_nbuf_ll(buf) + dst : NULL;
return NET_CONTINUE;
}
static enum net_verdict net_bt_recv(struct net_if *iface, struct net_pkt *pkt)
{
NET_DBG("iface %p pkt %p len %zu", iface, pkt, net_pkt_get_len(pkt));
if (!net_6lo_uncompress(pkt)) {
NET_DBG("Packet decompression failed");
return NET_DROP;
}
return NET_CONTINUE;
}
static inline
enum net_verdict ieee802154_manage_recv_packet(struct net_if *iface,
struct net_pkt *pkt)
{
enum net_verdict verdict = NET_CONTINUE;
u32_t src;
u32_t dst;
/* Upper IP stack expects the link layer address to be in
* big endian format so we must swap it here.
*/
if (net_pkt_ll_src(pkt)->addr &&
net_pkt_ll_src(pkt)->len == IEEE802154_EXT_ADDR_LENGTH) {
sys_mem_swap(net_pkt_ll_src(pkt)->addr,
net_pkt_ll_src(pkt)->len);
}
if (net_pkt_ll_dst(pkt)->addr &&
net_pkt_ll_dst(pkt)->len == IEEE802154_EXT_ADDR_LENGTH) {
sys_mem_swap(net_pkt_ll_dst(pkt)->addr,
net_pkt_ll_dst(pkt)->len);
}
/** Uncompress will drop the current fragment. Pkt ll src/dst address
* will then be wrong and must be updated according to the new fragment.
*/
src = net_pkt_ll_src(pkt)->addr ?
net_pkt_ll_src(pkt)->addr - net_pkt_ll(pkt) : 0;
dst = net_pkt_ll_dst(pkt)->addr ?
net_pkt_ll_dst(pkt)->addr - net_pkt_ll(pkt) : 0;
#ifdef CONFIG_NET_L2_IEEE802154_FRAGMENT
verdict = ieee802154_reassemble(pkt);
if (verdict == NET_DROP) {
goto out;
}
#else
if (!net_6lo_uncompress(pkt)) {
NET_DBG("Packet decompression failed");
verdict = NET_DROP;
goto out;
}
#endif
net_pkt_ll_src(pkt)->addr = src ? net_pkt_ll(pkt) + src : NULL;
net_pkt_ll_dst(pkt)->addr = dst ? net_pkt_ll(pkt) + dst : NULL;
pkt_hexdump(pkt, false);
out:
return verdict;
}
