+static struct rtnl_link_stats64 *virtnet_stats(struct net_device *dev,
+ struct rtnl_link_stats64 *tot)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ int cpu;
+ unsigned int start;
+
+ for_each_possible_cpu(cpu) {
+ struct virtnet_stats __percpu *stats
+ = per_cpu_ptr(vi->stats, cpu);
+ u64 tpackets, tbytes, rpackets, rbytes;
+
+ do {
+ start = u64_stats_fetch_begin(&stats->syncp);
+ tpackets = stats->tx_packets;
+ tbytes = stats->tx_bytes;
+ rpackets = stats->rx_packets;
+ rbytes = stats->rx_bytes;
+ } while (u64_stats_fetch_retry(&stats->syncp, start));
+
+ tot->rx_packets += rpackets;
+ tot->tx_packets += tpackets;
+ tot->rx_bytes += rbytes;
+ tot->tx_bytes += tbytes;
+ }
+
+ tot->tx_dropped = dev->stats.tx_dropped;
+ tot->rx_dropped = dev->stats.rx_dropped;
+ tot->rx_length_errors = dev->stats.rx_length_errors;
+ tot->rx_frame_errors = dev->stats.rx_frame_errors;
+
+ return tot;
+}
+