net: openvswitch: use new function dev_fetch_sw_netstats

static void

internal_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)

{

	int i;

	memset(stats, 0, sizeof(*stats));

	stats->rx_errors  = dev->stats.rx_errors;

	stats->tx_errors  = dev->stats.tx_errors;

	stats->tx_dropped = dev->stats.tx_dropped;

	stats->rx_dropped = dev->stats.rx_dropped;

	for_each_possible_cpu(i) {

		const struct pcpu_sw_netstats *percpu_stats;

		struct pcpu_sw_netstats local_stats;

		unsigned int start;

		percpu_stats = per_cpu_ptr(dev->tstats, i);

		do {

			start = u64_stats_fetch_begin_irq(&percpu_stats->syncp);

			local_stats = *percpu_stats;

		} while (u64_stats_fetch_retry_irq(&percpu_stats->syncp, start));

		stats->rx_bytes         += local_stats.rx_bytes;

		stats->rx_packets       += local_stats.rx_packets;

		stats->tx_bytes         += local_stats.tx_bytes;

		stats->tx_packets       += local_stats.tx_packets;

	}

	dev_fetch_sw_netstats(stats, dev->tstats);

}

static const struct net_device_ops internal_dev_netdev_ops = {