static void net_rx_thread(void)
{
struct net_pkt *pkt;
NET_DBG("Starting RX thread (stack %zu bytes)", sizeof(rx_stack));
/* Starting TX side. The ordering is important here and the TX
* can only be started when RX side is ready to receive packets.
* We synchronize the startup of the device so that both RX and TX
* are only started fully when both are ready to receive or send
* data.
*/
net_if_init(&startup_sync);
k_sem_take(&startup_sync, K_FOREVER);
/* This will take the interface up and start everything. */
net_if_post_init();
while (1) {
#if defined(CONFIG_NET_STATISTICS) || defined(CONFIG_NET_DEBUG_CORE)
size_t pkt_len;
#endif
pkt = k_fifo_get(&rx_queue, K_FOREVER);
net_analyze_stack("RX thread", rx_stack, sizeof(rx_stack));
#if defined(CONFIG_NET_STATISTICS) || defined(CONFIG_NET_DEBUG_CORE)
pkt_len = net_pkt_get_len(pkt);
#endif
NET_DBG("Received pkt %p len %zu", pkt, pkt_len);
net_stats_update_bytes_recv(pkt_len);
processing_data(pkt, false);
net_print_statistics();
net_pkt_print();
k_yield();
}
}
static void nrf5_rx_thread(void *arg1, void *arg2, void *arg3)
{
struct device *dev = (struct device *)arg1;
struct nrf5_802154_data *nrf5_radio = NRF5_802154_DATA(dev);
struct net_buf *frag = NULL;
enum net_verdict ack_result;
struct net_pkt *pkt;
u8_t pkt_len;
ARG_UNUSED(arg2);
ARG_UNUSED(arg3);
while (1) {
pkt = NULL;
SYS_LOG_DBG("Waiting for frame");
k_sem_take(&nrf5_radio->rx_wait, K_FOREVER);
SYS_LOG_DBG("Frame received");
pkt = net_pkt_get_reserve_rx(0, K_NO_WAIT);
if (!pkt) {
SYS_LOG_ERR("No pkt available");
goto out;
}
#if defined(CONFIG_IEEE802154_NRF5_RAW)
/**
* Reserve 1 byte for length
*/
net_pkt_set_ll_reserve(pkt, 1);
#endif
frag = net_pkt_get_frag(pkt, K_NO_WAIT);
if (!frag) {
SYS_LOG_ERR("No frag available");
goto out;
}
net_pkt_frag_insert(pkt, frag);
/* rx_mpdu contains length, psdu, fcs|lqi
* The last 2 bytes contain LQI or FCS, depending if
* automatic CRC handling is enabled or not, respectively.
*/
#if defined(CONFIG_IEEE802154_NRF5_RAW)
pkt_len = nrf5_radio->rx_psdu[0];
#else
pkt_len = nrf5_radio->rx_psdu[0] - NRF5_FCS_LENGTH;
#endif
/* Skip length (first byte) and copy the payload */
memcpy(frag->data, nrf5_radio->rx_psdu + 1, pkt_len);
net_buf_add(frag, pkt_len);
nrf_drv_radio802154_buffer_free(nrf5_radio->rx_psdu);
ack_result = ieee802154_radio_handle_ack(nrf5_radio->iface,
pkt);
if (ack_result == NET_OK) {
SYS_LOG_DBG("ACK packet handled");
goto out;
}
SYS_LOG_DBG("Caught a packet (%u) (LQI: %u)",
pkt_len, nrf5_radio->lqi);
if (net_recv_data(nrf5_radio->iface, pkt) < 0) {
SYS_LOG_DBG("Packet dropped by NET stack");
goto out;
}
net_analyze_stack("nRF5 rx stack",
(unsigned char *)nrf5_radio->rx_stack,
CONFIG_IEEE802154_NRF5_RX_STACK_SIZE);
continue;
out:
if (pkt) {
net_pkt_unref(pkt);
}
}
}
