Drivers: hv: vmbus: Implement APIs to support "in place" consumption of vmbus packets

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Implement APIs for in-place consumption of vmbus packets. Currently, each
packet is copied and processed one at a time and as part of processing
each packet we potentially may signal the host (if it is waiting for
room to produce a packet).

These APIs help batched in-place processing of vmbus packets.
We also optimize host signaling by having a separate API to signal
the end of in-place consumption. With netvsc using these APIs,
on an iperf run on average I see about 20X reduction in checks to
signal the host.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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K. Y. Srinivasan 2016-04-02 17:59:51 -07:00 • committed by Greg Kroah-Hartman

parent 687f32e6d9

commit ab028db41c

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include/linux/hyperv.h

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