netdev - [PATCH 2/3] net: openvswitch: use core API for updating TX stats

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Message-Id: <20201112111150.34361-1-lev@openvpn.net>
Date:   Thu, 12 Nov 2020 13:11:50 +0200
From:   Lev Stipakov <lstipakov@...il.com>
To:     Pravin B Shelar <pshelar@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        dev@...nvswitch.org, linux-kernel@...r.kernel.org
Cc:     Lev Stipakov <lev@...nvpn.net>
Subject: [PATCH 2/3] net: openvswitch: use core API for updating TX stats

Commit d3fd65484c781 ("net: core: add dev_sw_netstats_tx_add") has added
function "dev_sw_netstats_tx_add()" to update net device per-cpu TX
stats.

Use this function instead of own code. While on it, replace
"len" variable with "skb->len".

Signed-off-by: Lev Stipakov <lev@...nvpn.net>
---
 net/openvswitch/vport-internal_dev.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c
index 1e30d8df3ba5..116738d36e02 100644
--- a/net/openvswitch/vport-internal_dev.c
+++ b/net/openvswitch/vport-internal_dev.c
@@ -33,23 +33,17 @@ static struct internal_dev *internal_dev_priv(struct net_device *netdev)
 static netdev_tx_t
 internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
 {
-	int len, err;
+	int err;
 
-	len = skb->len;
 	rcu_read_lock();
 	err = ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
 	rcu_read_unlock();
 
-	if (likely(!err)) {
-		struct pcpu_sw_netstats *tstats = this_cpu_ptr(netdev->tstats);
-
-		u64_stats_update_begin(&tstats->syncp);
-		tstats->tx_bytes += len;
-		tstats->tx_packets++;
-		u64_stats_update_end(&tstats->syncp);
-	} else {
+	if (likely(!err))
+		dev_sw_netstats_tx_add(netdev, 1, skb->len);
+	else
 		netdev->stats.tx_errors++;
-	}
+
 	return NETDEV_TX_OK;
 }
 
-- 
2.25.1