netdev - [PATCH 1/9 net-next] net: netdevice.h: sw_netstats_rx

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Message-Id: <20201005203418.55128-1-fabf@skynet.be>
Date:   Mon,  5 Oct 2020 22:34:18 +0200
From:   Fabian Frederick <fabf@...net.be>
To:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org
Cc:     pablo@...filter.org, laforge@...monks.org,
        steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
        pshelar@....org, dev@...nvswitch.org, yoshfuji@...ux-ipv6.org,
        kuznet@....inr.ac.ru, Fabian Frederick <fabf@...net.be>
Subject: [PATCH 1/9 net-next] 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@...net.be>
---
 include/linux/netdevice.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 0c79d9e56a5e5..42b18e034adde 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2530,6 +2530,17 @@ 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);
-- 
2.28.0