Messages in this thread | | | From | Sven Van Asbroeck <> | Date | Fri, 12 Feb 2021 17:38:47 -0500 | Subject | Re: [PATCH net-next v2 2/5] lan743x: sync only the received area of an rx ring buffer |
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Hi Bryan,
On Fri, Feb 12, 2021 at 3:45 PM <Bryan.Whitehead@microchip.com> wrote: > > According to the document I have, FRAME_LENGTH is only valid when LS bit is set, and reserved otherwise. > Therefore, I'm not sure you can rely on it being zero when LS is not set, even if your experiments say it is. > Future chip revisions might use those bits differently.
That's good to know. I didn't find any documentation related to multi-buffer frames, so I had to go with what I saw the chip do experimentally. It's great that you were able to double-check against the official docs.
> > Can you change this so the LS bit is checked. > If set you can use the smaller of FRAME_LENGTH or buffer length. > If clear you can just use buffer length.
Will do. Are you planning to hold off your tests until v3? It shouldn't take too long.
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