On Fri, Sep 16, 2016 at 01:39:15AM +0300, Michael S. Tsirkin wrote: > The idea is to have a r/w descriptor in a ring structure, > replacing the used and available ring, index and descriptor > buffer.
This is probably obvious but: Why is the desc.index field needed? The index field would be needed if the driver had to jump over a DESC_HW descriptor when adding descriptors, but that doesn't seem necessary since the device is supposed to overwrite descriptors in ascending ring order when they complete out-of-order. Stefan
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