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net: l2tp: Treat NET_XMIT_CN as success in l2tp_eth_dev_xmit

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The tc could return NET_XMIT_CN as one congestion notification, but
it does not mean the packe is lost. Other modules like ipvlan,
macvlan, and others treat NET_XMIT_CN as success too.
So l2tp_eth_dev_xmit should add the NET_XMIT_CN check.

Signed-off-by: Gao Feng <gfree.wind@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gao Feng 2016-11-21 08:56:21 +08:00 committed by David S. Miller
parent 6bc5445c01
commit 7c6ae610a1
1 changed files with 1 additions and 1 deletions
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net/l2tp/l2tp_eth.c
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@ -97,7 +97,7 @@ static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned int len = skb->len;
int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
if (likely(ret == NET_XMIT_SUCCESS)) {
if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
atomic_long_add(len, &priv->tx_bytes);
atomic_long_inc(&priv->tx_packets);
} else {