drivers: net: loopback: Optimize packet drop (3cc1a6e9) · Commits · Wenxi XU / zephyr

drivers/net/loopback.c

+13 −18

Original line number	Diff line number	Diff line
		@@ -89,6 +89,19 @@ static int loopback_send(const struct device dev, struct net_pkt pkt)

		ARG_UNUSED(dev);

		#ifdef CONFIG_NET_LOOPBACK_SIMULATE_PACKET_DROP
		/* Drop packets based on the loopback_packet_drop_ratio
		* a ratio of 0.2 will drop one every 5 packets
		*/
		loopback_packet_drop_state += loopback_packet_drop_ratio;
		if (loopback_packet_drop_state >= 1.0f) {
		/* Administrate we dropped a packet */
		loopback_packet_drop_state -= 1.0f;
		loopback_packet_dropped_count++;
		return 0;
		}
		#endif

		if (!pkt->frags) {
		LOG_ERR("No data to send");
		return -ENODATA;
		@@ -125,24 +138,6 @@ static int loopback_send(const struct device dev, struct net_pkt pkt)
		goto out;
		}

		#ifdef CONFIG_NET_LOOPBACK_SIMULATE_PACKET_DROP
		/* Drop packets based on the loopback_packet_drop_ratio
		* a ratio of 0.2 will drop one every 5 packets
		*/
		loopback_packet_drop_state += loopback_packet_drop_ratio;
		if (loopback_packet_drop_state >= 1.0f) {
		/* Administrate we dropped a packet */
		loopback_packet_drop_state -= 1.0f;
		loopback_packet_dropped_count++;

		/* Clean up the packet */
		net_pkt_unref(cloned);
		/* Pretend everything was fine */
		res = 0;

		goto out;
		}
		#endif
		res = net_recv_data(net_pkt_iface(cloned), cloned);
		if (res < 0) {
		LOG_ERR("Data receive failed.");