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net: l2tp_eth: provide tx_dropped counter

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Change l2tp_xmit_skb() to return NET_XMIT_DROP in case skb is dropped.

Use kfree_skb() instead dev_kfree_skb() for drop_monitor pleasure.

Support tx_dropped counter for l2tp_eth

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2012-06-28 20:15:13 +00:00
committed by David S. Miller
parent a777c892ce
commit b8c8430726
2 changed files with 16 additions and 10 deletions
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15
net/l2tp/l2tp_eth.c
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@@ -44,6 +44,7 @@ struct l2tp_eth {
struct list_head list;
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;
@@ -92,12 +93,15 @@ static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct l2tp_eth *priv = netdev_priv(dev);
struct l2tp_session *session = priv->session;
unsigned int len = skb->len;
int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
atomic_long_add(skb->len, &priv->tx_bytes);
atomic_long_inc(&priv->tx_packets);
l2tp_xmit_skb(session, skb, session->hdr_len);
if (likely(ret == NET_XMIT_SUCCESS)) {
atomic_long_add(len, &priv->tx_bytes);
atomic_long_inc(&priv->tx_packets);
} else {
atomic_long_inc(&priv->tx_dropped);
}
return NETDEV_TX_OK;
}
@@ -108,6 +112,7 @@ static struct rtnl_link_stats64 *l2tp_eth_get_stats64(struct net_device *dev,
stats->tx_bytes = atomic_long_read(&priv->tx_bytes);
stats->tx_packets = atomic_long_read(&priv->tx_packets);
stats->tx_dropped = atomic_long_read(&priv->tx_dropped);
stats->rx_bytes = atomic_long_read(&priv->rx_bytes);
stats->rx_packets = atomic_long_read(&priv->rx_packets);
stats->rx_errors = atomic_long_read(&priv->rx_errors);