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H A Dpktgen.cdiff 0835acfe72e43b2f9bd46ec8c0d219e94c3525e0 Wed Sep 30 08:03:33 CDT 2009 Eric Dumazet <eric.dumazet@gmail.com> pktgen: Avoid dirtying skb->users when txq is full

We can avoid two atomic ops on skb->users if packet is not going to be
sent to the device (because hardware txqueue is full)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>