Reporting firmware stats to ethtool

Kalle Valo kvalo at
Fri Aug 8 02:06:15 PDT 2014

Ben Greear <greearb at> writes:

> I'm working on a patch to report the stats seen in debugfs/...ath10k/fw_stats
> as ethtool stats, somewhat similar to how ath9k does it.
> I notice that my user-space tool is reporting huge numbers because
> the stats are reset to zero when firmware restarts, and so my tool
> thinks the stats wrapped.
> I can fix my tool easily enough, but I first wanted to see if
> anyone had strong feelings about keeping the stats from resetting
> to zero by storing history and calculating diffs in the driver.
> I think my preference is to punt this to user-space, but if
> someone feels otherwise, please let me know sooner than later.

I also prefer to have this in user space, but how does user space know
when the stats have been zeroed?

Kalle Valo

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