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Only one CPU at a time will own an RX IU, so using the address of the IU as the work request cookie allows us to avoid taking a lock. We can similarly prepare the TX path for lockless posting by moving the free TX IUs to a list. This also removes the requirement that the queue sizes be a power of 2. Signed-off-by: Bart Van Assche <bvanassche@acm.org> [ broken out, small cleanups, and modified to avoid needing an extra field in the IU by David Dillow] Signed-off-by: David Dillow <dillowda@ornl.gov> |
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