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Message-ID: <20230921085218.954120-4-edumazet@google.com>
Date: Thu, 21 Sep 2023 08:52:18 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <simon.horman@...igine.com>, netdev@...r.kernel.org,
eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>,
Simon Horman <horms@...nel.org>
Subject: [PATCH v2 net-next 3/3] net: l2tp_eth: use generic dev->stats fields
Core networking has opt-in atomic variant of dev->stats,
simply use DEV_STATS_INC(), DEV_STATS_ADD() and DEV_STATS_READ().
v2: removed @priv local var in l2tp_eth_dev_recv() (Simon)
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Simon Horman <horms@...nel.org>
---
net/l2tp/l2tp_eth.c | 34 ++++++++++++----------------------
1 file changed, 12 insertions(+), 22 deletions(-)
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index f2ae03c404736d826fd7dc327b1567eac1c8651a..25ca89f804145a0ed9b407011bb3013a745e50f3 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -37,12 +37,6 @@
/* via netdev_priv() */
struct l2tp_eth {
struct l2tp_session *session;
- atomic_long_t tx_bytes;
- atomic_long_t tx_packets;
- atomic_long_t tx_dropped;
- atomic_long_t rx_bytes;
- atomic_long_t rx_packets;
- atomic_long_t rx_errors;
};
/* via l2tp_session_priv() */
@@ -79,10 +73,10 @@ static netdev_tx_t l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev
int ret = l2tp_xmit_skb(session, skb);
if (likely(ret == NET_XMIT_SUCCESS)) {
- atomic_long_add(len, &priv->tx_bytes);
- atomic_long_inc(&priv->tx_packets);
+ DEV_STATS_ADD(dev, tx_bytes, len);
+ DEV_STATS_INC(dev, tx_packets);
} else {
- atomic_long_inc(&priv->tx_dropped);
+ DEV_STATS_INC(dev, tx_dropped);
}
return NETDEV_TX_OK;
}
@@ -90,14 +84,12 @@ static netdev_tx_t l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev
static void l2tp_eth_get_stats64(struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
- struct l2tp_eth *priv = netdev_priv(dev);
-
- stats->tx_bytes = (unsigned long)atomic_long_read(&priv->tx_bytes);
- stats->tx_packets = (unsigned long)atomic_long_read(&priv->tx_packets);
- stats->tx_dropped = (unsigned long)atomic_long_read(&priv->tx_dropped);
- stats->rx_bytes = (unsigned long)atomic_long_read(&priv->rx_bytes);
- stats->rx_packets = (unsigned long)atomic_long_read(&priv->rx_packets);
- stats->rx_errors = (unsigned long)atomic_long_read(&priv->rx_errors);
+ stats->tx_bytes = DEV_STATS_READ(dev, tx_bytes);
+ stats->tx_packets = DEV_STATS_READ(dev, tx_packets);
+ stats->tx_dropped = DEV_STATS_READ(dev, tx_dropped);
+ stats->rx_bytes = DEV_STATS_READ(dev, rx_bytes);
+ stats->rx_packets = DEV_STATS_READ(dev, rx_packets);
+ stats->rx_errors = DEV_STATS_READ(dev, rx_errors);
}
static const struct net_device_ops l2tp_eth_netdev_ops = {
@@ -126,7 +118,6 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
{
struct l2tp_eth_sess *spriv = l2tp_session_priv(session);
struct net_device *dev;
- struct l2tp_eth *priv;
if (!pskb_may_pull(skb, ETH_HLEN))
goto error;
@@ -144,12 +135,11 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
if (!dev)
goto error_rcu;
- priv = netdev_priv(dev);
if (dev_forward_skb(dev, skb) == NET_RX_SUCCESS) {
- atomic_long_inc(&priv->rx_packets);
- atomic_long_add(data_len, &priv->rx_bytes);
+ DEV_STATS_INC(dev, rx_packets);
+ DEV_STATS_ADD(dev, rx_bytes, data_len);
} else {
- atomic_long_inc(&priv->rx_errors);
+ DEV_STATS_INC(dev, rx_errors);
}
rcu_read_unlock();
--
2.42.0.459.ge4e396fd5e-goog
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