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| author |   Michael S. Tsirkin <mst@redhat.com> | 2012-11-01 09:16:32 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-11-02 21:29:57 -0400 |
| commit | 149d36f7187cbd10beff88e4e20f93e51a34827e (patch) | |
| tree | 600293aadc93c8f5d5d48bba03fa8087d35e46c7 | |
| parent | skb: api to report errors for zero copy skbs (diff) | |
| download | linux-dev-149d36f7187cbd10beff88e4e20f93e51a34827e.tar.xz linux-dev-149d36f7187cbd10beff88e4e20f93e51a34827e.zip | |
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: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/tun.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 9e287680cd2e..b44d7b79cddc 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -728,6 +728,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) drop: dev->stats.tx_dropped++; + skb_tx_error(skb); kfree_skb(skb); rcu_read_unlock(); return NETDEV_TX_OK; |