net: hsr: add tx stats for master interface

Add tx stats to hsr interface. Without this
ifconfig for hsr interface doesn't show tx packet stats.

Signed-off-by: Murali Karicheri <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/hsr/hsr_forward.c

···
 		goto out_drop;
 	hsr_register_frame_in(frame.node_src, port, frame.sequence_nr);
 	hsr_forward_do(&frame);
+	/* Gets called for ingress frames as well as egress from master port.
+	 * So check and increment stats for master port only here.
+	 */
+	if (port->type == HSR_PT_MASTER) {
+		port->dev->stats.tx_packets++;
+		port->dev->stats.tx_bytes += skb->len;
+	}
 
 	if (frame.skb_hsr)
 		kfree_skb(frame.skb_hsr);