Commit 149d36f7 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin Committed by David S. Miller

tun: report orphan frags errors to zero copy callback

When tun transmits a zero copy skb, it orphans the frags
which might need to allocate extra memory, in atomic context.
If that fails, notify ubufs callback before freeing the skb
as a hint that device should disable zerocopy mode.
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 25121173
...@@ -728,6 +728,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -728,6 +728,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
drop: drop:
dev->stats.tx_dropped++; dev->stats.tx_dropped++;
skb_tx_error(skb);
kfree_skb(skb); kfree_skb(skb);
rcu_read_unlock(); rcu_read_unlock();
return NETDEV_TX_OK; return NETDEV_TX_OK;
......
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