Wifi issues with esp32 on Zephyr 3.7

[OgnjenX]

Is anyone facing issues with wifi on Zephyr 3.7? For some reason I'm getting:

<err> esp32_wifi: Failed to send packet

in logs. I tried tracking the problem to find the root cause and it seems that 'esp_wifi_internal_tx' is returning error code '12294'. But I'm struggling to understand why.

static int esp32_wifi_send(const struct device *dev, struct net_pkt *pkt)
{
	struct esp32_wifi_runtime *data = dev->data;
	const int pkt_len = net_pkt_get_len(pkt);
	esp_interface_t ifx =
		esp32_data.state == ESP32_AP_CONNECTED ? ESP_IF_WIFI_AP : ESP_IF_WIFI_STA;

	/* Read the packet payload */
	if (net_pkt_read(pkt, data->frame_buf, pkt_len) < 0) {
		goto out;
	}

	/* Enqueue packet for transmission */
	if (esp_wifi_internal_tx(ifx, (void *)data->frame_buf, pkt_len) != ESP_OK) {
		goto out;
	}

#if defined(CONFIG_NET_STATISTICS_WIFI)
	data->stats.bytes.sent += pkt_len;
	data->stats.pkts.tx++;
#endif

	LOG_DBG("pkt sent %p len %d", pkt, pkt_len);
	return 0;

out:

	LOG_ERR("Failed to send packet");
#if defined(CONFIG_NET_STATISTICS_WIFI)
	data->stats.errors.tx++;
#endif
	return -EIO;
}

I would appreciate any help.

[OgnjenX]

I was missing networking buffer configurations in .conf file:

CONFIG_NET_PKT_RX_COUNT=10
CONFIG_NET_PKT_TX_COUNT=10
CONFIG_NET_BUF_RX_COUNT=20
CONFIG_NET_BUF_TX_COUNT=20
CONFIG_NET_MAX_CONTEXTS=10