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macvlan: 64 bit rx counters

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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>
This commit is contained in:
Eric Dumazet
2010-06-24 00:54:21 +00:00
committed by David S. Miller
parent 33d91f00c7
commit bc66154efe
2 changed files with 35 additions and 21 deletions
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19
include/linux/if_macvlan.h
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@@ -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 macvtap_queue;
* 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 @@ static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
{
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++;
}