netdev - [PATCH net-next v2 05/12] net: usbnet: use new function dev_fetch_sw

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Message-ID: <70ad3e33-8ea6-e12e-31de-5fec7a3c4f6e@gmail.com>
Date:   Mon, 12 Oct 2020 10:07:33 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Bjørn Mork <bjorn@...k.no>,
        Oliver Neukum <oneukum@...e.com>,
        Igor Mitsyanko <imitsyanko@...ntenna.com>,
        Sergey Matyukevich <geomatsi@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Johannes Berg <johannes@...solutions.net>,
        Pravin B Shelar <pshelar@....org>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        linux-rdma@...r.kernel.org,
        Linux USB Mailing List <linux-usb@...r.kernel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        bridge@...ts.linux-foundation.org
Subject: [PATCH net-next v2 05/12] net: usbnet: use new function
 dev_fetch_sw_netstats

Simplify the code by using new function dev_fetch_sw_netstats().

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/usb/usbnet.c | 24 +-----------------------
 1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 963d260d1..6062dc278 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -983,31 +983,9 @@ EXPORT_SYMBOL_GPL(usbnet_set_link_ksettings);
 void usbnet_get_stats64(struct net_device *net, struct rtnl_link_stats64 *stats)
 {
 	struct usbnet *dev = netdev_priv(net);
-	unsigned int start;
-	int cpu;
 
 	netdev_stats_to_stats64(stats, &net->stats);
-
-	for_each_possible_cpu(cpu) {
-		struct pcpu_sw_netstats *stats64;
-		u64 rx_packets, rx_bytes;
-		u64 tx_packets, tx_bytes;
-
-		stats64 = per_cpu_ptr(dev->stats64, cpu);
-
-		do {
-			start = u64_stats_fetch_begin_irq(&stats64->syncp);
-			rx_packets = stats64->rx_packets;
-			rx_bytes = stats64->rx_bytes;
-			tx_packets = stats64->tx_packets;
-			tx_bytes = stats64->tx_bytes;
-		} while (u64_stats_fetch_retry_irq(&stats64->syncp, start));
-
-		stats->rx_packets += rx_packets;
-		stats->rx_bytes += rx_bytes;
-		stats->tx_packets += tx_packets;
-		stats->tx_bytes += tx_bytes;
-	}
+	dev_fetch_sw_netstats(stats, dev->stats64);
 }
 EXPORT_SYMBOL_GPL(usbnet_get_stats64);
 
-- 
2.28.0