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veth: use standard dev_lstats_add() and dev_lstats_read() 

This cleanup will ease u64_stats_t adoption in a single location.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-11-07 16:27:17 -08:00 committed by David S. Miller
parent 3ed912264f
commit b4fba476dc
1 changed files with 11 additions and 32 deletions
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43
drivers/net/veth.c
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@ -260,14 +260,8 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
skb_tx_timestamp(skb);
if (likely(veth_forward_skb(rcv, skb, rq, rcv_xdp) == NET_RX_SUCCESS)) {
if (!rcv_xdp) {
struct pcpu_lstats *stats = this_cpu_ptr(dev->lstats);
u64_stats_update_begin(&stats->syncp);
stats->bytes += length;
stats->packets++;
u64_stats_update_end(&stats->syncp);
}
if (!rcv_xdp)
dev_lstats_add(dev, length);
} else {
drop:
atomic64_inc(&priv->dropped);
@ -281,26 +275,11 @@ drop:
return NETDEV_TX_OK;
}
static u64 veth_stats_tx(struct pcpu_lstats *result, struct net_device *dev)
static u64 veth_stats_tx(struct net_device *dev, u64 *packets, u64 *bytes)
{
struct veth_priv *priv = netdev_priv(dev);
int cpu;
result->packets = 0;
result->bytes = 0;
for_each_possible_cpu(cpu) {
struct pcpu_lstats *stats = per_cpu_ptr(dev->lstats, cpu);
u64 packets, bytes;
unsigned int start;
do {
start = u64_stats_fetch_begin_irq(&stats->syncp);
packets = stats->packets;
bytes = stats->bytes;
} while (u64_stats_fetch_retry_irq(&stats->syncp, start));
result->packets += packets;
result->bytes += bytes;
}
dev_lstats_read(dev, packets, bytes);
return atomic64_read(&priv->dropped);
}
@ -335,11 +314,11 @@ static void veth_get_stats64(struct net_device *dev,
struct veth_priv *priv = netdev_priv(dev);
struct net_device *peer;
struct veth_rq_stats rx;
struct pcpu_lstats tx;
u64 packets, bytes;
tot->tx_dropped = veth_stats_tx(&tx, dev);
tot->tx_bytes = tx.bytes;
tot->tx_packets = tx.packets;
tot->tx_dropped = veth_stats_tx(dev, &packets, &bytes);
tot->tx_bytes = bytes;
tot->tx_packets = packets;
veth_stats_rx(&rx, dev);
tot->rx_dropped = rx.xdp_drops;
@ -349,9 +328,9 @@ static void veth_get_stats64(struct net_device *dev,
rcu_read_lock();
peer = rcu_dereference(priv->peer);
if (peer) {
tot->rx_dropped += veth_stats_tx(&tx, peer);
tot->rx_bytes += tx.bytes;
tot->rx_packets += tx.packets;
tot->rx_dropped += veth_stats_tx(peer, &packets, &bytes);
tot->rx_bytes += bytes;
tot->rx_packets += packets;
veth_stats_rx(&rx, peer);
tot->tx_bytes += rx.xdp_bytes;