net: dsa: Add support for 64-bit statistics
DSA slave network devices maintain a pair of bytes and packets counters
for each directions, but these are not 64-bit capable. Re-use
pcpu_sw_netstats which contains exactly what we need for that purpose
and update the code path to report 64-bit capable statistics.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index a55e2e4..0ba842c 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -190,6 +190,7 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct sk_buff *nskb = NULL;
+ struct dsa_slave_priv *p;
if (unlikely(dst == NULL)) {
kfree_skb(skb);
@@ -207,12 +208,15 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
}
skb = nskb;
+ p = netdev_priv(skb->dev);
skb_push(skb, ETH_HLEN);
skb->pkt_type = PACKET_HOST;
skb->protocol = eth_type_trans(skb, skb->dev);
- skb->dev->stats.rx_packets++;
- skb->dev->stats.rx_bytes += skb->len;
+ u64_stats_update_begin(&p->stats64.syncp);
+ p->stats64.rx_packets++;
+ p->stats64.rx_bytes += skb->len;
+ u64_stats_update_end(&p->stats64.syncp);
netif_receive_skb(skb);