K 10
svn:author
V 2
mw
K 8
svn:date
V 27
2019-05-30T13:18:23.650816Z
K 7
svn:log
V 397
Fix DMA synchronization in the ENA driver Tx and Rx paths

The DMA in FreeBSD requires explicit synchronization. ENA driver was
only doing PREREAD and PREWRITE synchronizations. Missing
bus_dmamap_sync() calls were added.

It is also required to synchronize DMA engine before unloading DMA map.

Submitted by:  Michal Krawczyk <mk@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Amazon, Inc.

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