On Tue, 2016-04-12 at 14:38 -0500, John Allen wrote: > Moves tx completion processing out of interrupt context, deferring work > using a wait queue. With this work now deferred, we must account for the > possibility that skbs can be sent faster than we can process completion > requests in which case the tx buffer will overflow. If the tx buffer is > full, ibmvnic_xmit will return NETDEV_TX_BUSY and stop the current tx > queue. Subsequently, the queue will be restarted in ibmvnic_complete_tx > when all pending tx completion requests have been cleared.
1) Why is this needed ? 2) If it is needed, why is this not done in a generic way, so that other drivers can use this ? Thanks.
