linux-kernel - [PATCH 1/3] net: mac80211: use core API for updating TX stats

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Date:   Thu, 12 Nov 2020 13:09:53 +0200
From:   Lev Stipakov <lstipakov@...il.com>
To:     Johannes Berg <johannes@...solutions.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Lev Stipakov <lev@...nvpn.net>
Subject: [PATCH 1/3] net: mac80211: 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 ieee80211_tx_stats().

Signed-off-by: Lev Stipakov <lev@...nvpn.net>
---
 net/mac80211/tx.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 5f05f4651dd7..7807f8178527 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -38,16 +38,6 @@
 
 /* misc utils */
 
-static inline void ieee80211_tx_stats(struct net_device *dev, u32 len)
-{
-	struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
-
-	u64_stats_update_begin(&tstats->syncp);
-	tstats->tx_packets++;
-	tstats->tx_bytes += len;
-	u64_stats_update_end(&tstats->syncp);
-}
-
 static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
 				 struct sk_buff *skb, int group_addr,
 				 int next_frag_len)
@@ -3403,7 +3393,7 @@ static void ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
 	if (key)
 		info->control.hw_key = &key->conf;
 
-	ieee80211_tx_stats(skb->dev, skb->len);
+	dev_sw_netstats_tx_add(skb->dev, 1, skb->len);
 
 	if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
 		tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
@@ -4021,7 +4011,7 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb,
 			goto out;
 		}
 
-		ieee80211_tx_stats(dev, skb->len);
+		dev_sw_netstats_tx_add(dev, 1, skb->len);
 
 		ieee80211_xmit(sdata, sta, skb);
 	}
@@ -4248,7 +4238,7 @@ static void ieee80211_8023_xmit(struct ieee80211_sub_if_data *sdata,
 
 	info->hw_queue = sdata->vif.hw_queue[skb_get_queue_mapping(skb)];
 
-	ieee80211_tx_stats(dev, skb->len);
+	dev_sw_netstats_tx_add(dev, 1, skb->len);
 
 	sta->tx_stats.bytes[skb_get_queue_mapping(skb)] += skb->len;
 	sta->tx_stats.packets[skb_get_queue_mapping(skb)]++;
-- 
2.25.1