macvlan: 64 bit rx counters
Use u64_stats_sync infrastructure to implement 64bit stats.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
index c26a0e4..e24ce6e 100644
--- a/include/linux/if_macvlan.h
+++ b/include/linux/if_macvlan.h
@@ -6,6 +6,7 @@
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <net/netlink.h>
+#include <linux/u64_stats_sync.h>
#if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE)
struct socket *macvtap_get_socket(struct file *);
@@ -27,14 +28,16 @@
* struct macvlan_rx_stats - MACVLAN percpu rx stats
* @rx_packets: number of received packets
* @rx_bytes: number of received bytes
- * @multicast: number of received multicast packets
+ * @rx_multicast: number of received multicast packets
+ * @syncp: synchronization point for 64bit counters
* @rx_errors: number of errors
*/
struct macvlan_rx_stats {
- unsigned long rx_packets;
- unsigned long rx_bytes;
- unsigned long multicast;
- unsigned long rx_errors;
+ u64 rx_packets;
+ u64 rx_bytes;
+ u64 rx_multicast;
+ struct u64_stats_sync syncp;
+ unsigned long rx_errors;
};
struct macvlan_dev {
@@ -56,12 +59,14 @@
{
struct macvlan_rx_stats *rx_stats;
- rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id());
+ rx_stats = this_cpu_ptr(vlan->rx_stats);
if (likely(success)) {
+ u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;;
rx_stats->rx_bytes += len;
if (multicast)
- rx_stats->multicast++;
+ rx_stats->rx_multicast++;
+ u64_stats_update_end(&rx_stats->syncp);
} else {
rx_stats->rx_errors++;
}