net: netdevice.h: sw_netstats_rx_add helper

some drivers/network protocols update rx bytes/packets under
u64_stats_update_begin/end sequence.
Add a specific helper like dev_lstats_add()

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d126e36..a0df43b 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2543,6 +2543,16 @@ struct pcpu_lstats {
 
 void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes);
 
+static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len)
+{
+       struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
+
+       u64_stats_update_begin(&tstats->syncp);
+       tstats->rx_bytes += len;
+       tstats->rx_packets++;
+       u64_stats_update_end(&tstats->syncp);
+}
+
 static inline void dev_lstats_add(struct net_device *dev, unsigned int len)
 {
        struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats);