Re: [patch net-next v4 00/10] net: allow user specify TC action HW stats type

David Miller
2020-03-09T04:09:15Z

From: Jiri Pirko <jiri@resnulli.us>
Date: Sat, 7 Mar 2020 12:40:10 +0100

> Currently, when user adds a TC action and the action gets offloaded,
> the user expects the HW stats to be counted and included in stats dump.
> However, since drivers may implement different types of counting, there
> is no way to specify which one the user is interested in.
>
> For example for mlx5, only delayed counters are available as the driver
> periodically polls for updated stats.
>
> In case of mlxsw, the counters are queried on dump time. However, the
> HW resources for this type of counters is quite limited (couple of
> thousands). This limits the amount of supported offloaded filters
> significantly. Without counter assigned, the HW is capable to carry
> millions of those.
>
> On top of that, mlxsw HW is able to support delayed counters as well in
> greater numbers. That is going to be added in a follow-up patch.
>
> This patchset allows user to specify one of the following types of HW
> stats for added action:
> immediate - queried during dump time
> delayed - polled from HW periodically or sent by HW in async manner
> disabled - no stats needed
>
> Note that if "hw_stats" option is not passed, user does not care about
> the type, just expects any type of stats.
>
> Examples:
...

Series applied, thanks Jiri.