samples: net: stats: Print ethernet statistics

If ethernet statistics collection is enabled, then print it
to the user.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>

Author: jukkar

samples/net/stats/prj.conf

@@ -11,6 +11,7 @@ CONFIG_NET_TCP=y
 CONFIG_NET_STATISTICS=y
 CONFIG_NET_STATISTICS_USER_API=y
 CONFIG_NET_STATISTICS_PER_INTERFACE=y
+CONFIG_NET_STATISTICS_ETHERNET=y
 
 # How often to print current statistics
 CONFIG_SAMPLE_PERIOD=30

samples/net/stats/src/main.c

@@ -159,6 +159,41 @@ static void iface_cb(struct net_if *iface, void *user_data)
 }
 #endif
 
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+static void print_eth_stats(struct net_if *iface, struct net_stats_eth *data)
+{
+	printk("Statistics for Ethernet interface %p [%d]\n", iface,
+	       net_if_get_by_iface(iface));
+
+	printk("Bytes received   : %u\n", data->bytes.received);
+	printk("Bytes sent       : %u\n", data->bytes.sent);
+	printk("Packets received : %u\n", data->pkts.rx);
+	printk("Packets sent     : %u\n", data->pkts.tx);
+	printk("Bcast received   : %u\n", data->broadcast.rx);
+	printk("Bcast sent       : %u\n", data->broadcast.tx);
+	printk("Mcast received   : %u\n", data->multicast.rx);
+	printk("Mcast sent       : %u\n", data->multicast.tx);
+}
+
+static void eth_iface_cb(struct net_if *iface, void *user_data)
+{
+	struct net_stats_eth eth_data;
+	int ret;
+
+	if (net_if_l2(iface) != &NET_L2_GET_NAME(ETHERNET)) {
+		return;
+	}
+
+	ret = net_mgmt(NET_REQUEST_STATS_GET_ETHERNET, iface, &eth_data,
+		       sizeof(eth_data));
+	if (ret < 0) {
+		return;
+	}
+
+	print_eth_stats(iface, &eth_data);
+}
+#endif
+
 static void stats(struct k_work *work)
 {
 	struct net_stats data;
@@ -175,6 +210,10 @@ static void stats(struct k_work *work)
 	net_if_foreach(iface_cb, &data);
 #endif
 
+#if defined(CONFIG_NET_STATISTICS_ETHERNET)
+	net_if_foreach(eth_iface_cb, &data);
+#endif
+
 	k_delayed_work_submit(&stats_timer, K_SECONDS(CONFIG_SAMPLE_PERIOD));
 }