K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2019-01-16T05:44:14.166898Z
K 7
svn:log
V 514
Improve iflib busdma(9) KPI use.

- Specify BUS_DMA_NOWAIT for bus_dmamap_load() on rx refill, since
  callbacks are not supposed to be used.
- Match tso/non-tso tags to corresponding tx map operations.  Create
  separate tso maps for tx descriptors.  In particular, do not use
  non-tso tag to load, unload, or destroy a map created with tso tag.
- Add missed bus_dmamap_sync() calls.
  Submitted by: marius.

Reported and tested by:	pho
Reviewed by:	marius
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

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