67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2016 Intel Corporation.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <logging/log.h>
|
|
LOG_MODULE_REGISTER(net_ieee802154_aloha, CONFIG_NET_L2_IEEE802154_LOG_LEVEL);
|
|
|
|
#include <net/net_core.h>
|
|
#include <net/net_if.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include "ieee802154_frame.h"
|
|
#include "ieee802154_utils.h"
|
|
#include "ieee802154_radio_utils.h"
|
|
|
|
static inline int aloha_radio_send(struct net_if *iface,
|
|
struct net_pkt *pkt,
|
|
struct net_buf *frag)
|
|
{
|
|
uint8_t retries = CONFIG_NET_L2_IEEE802154_RADIO_TX_RETRIES;
|
|
struct ieee802154_context *ctx = net_if_l2_data(iface);
|
|
bool ack_required = prepare_for_ack(ctx, pkt, frag);
|
|
int ret = -EIO;
|
|
|
|
NET_DBG("frag %p", frag);
|
|
|
|
while (retries) {
|
|
retries--;
|
|
|
|
ret = ieee802154_tx(iface, IEEE802154_TX_MODE_DIRECT,
|
|
pkt, frag);
|
|
if (ret) {
|
|
continue;
|
|
}
|
|
|
|
ret = wait_for_ack(iface, ack_required);
|
|
if (!ret) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum net_verdict aloha_radio_handle_ack(struct net_if *iface,
|
|
struct net_pkt *pkt)
|
|
{
|
|
struct ieee802154_context *ctx = net_if_l2_data(iface);
|
|
|
|
if (IS_ENABLED(CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA) &&
|
|
ieee802154_get_hw_capabilities(iface) & IEEE802154_HW_CSMA) {
|
|
return NET_OK;
|
|
}
|
|
|
|
return handle_ack(ctx, pkt);
|
|
}
|
|
|
|
/* Declare the public Radio driver function used by the HW drivers */
|
|
FUNC_ALIAS(aloha_radio_send,
|
|
ieee802154_radio_send, int);
|
|
|
|
FUNC_ALIAS(aloha_radio_handle_ack,
|
|
ieee802154_radio_handle_ack, enum net_verdict);
|