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-rw-r--r--net/l2tp/l2tp_core.c11
-rw-r--r--net/l2tp/l2tp_eth.c15
2 files changed, 16 insertions, 10 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 32b2155..393355d 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1128,6 +1128,7 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
int headroom;
int uhlen = (tunnel->encap == L2TP_ENCAPTYPE_UDP) ? sizeof(struct udphdr) : 0;
int udp_len;
+ int ret = NET_XMIT_SUCCESS;
/* Check that there's enough headroom in the skb to insert IP,
* UDP and L2TP headers. If not enough, expand it to
@@ -1137,8 +1138,8 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
uhlen + hdr_len;
old_headroom = skb_headroom(skb);
if (skb_cow_head(skb, headroom)) {
- dev_kfree_skb(skb);
- goto abort;
+ kfree_skb(skb);
+ return NET_XMIT_DROP;
}
new_headroom = skb_headroom(skb);
@@ -1156,7 +1157,8 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {
- dev_kfree_skb(skb);
+ kfree_skb(skb);
+ ret = NET_XMIT_DROP;
goto out_unlock;
}
@@ -1215,8 +1217,7 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
out_unlock:
bh_unlock_sock(sk);
-abort:
- return 0;
+ return ret;
}
EXPORT_SYMBOL_GPL(l2tp_xmit_skb);
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index 47b259f..f9ee74d 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -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);
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