netdev - Re: [patch net-next v2 08/12] flow_offload: introduce "immediate" HW stats type and allow it in mlxsw

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Date:   Mon, 2 Mar 2020 14:23:42 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        saeedm@...lanox.com, leon@...nel.org, michael.chan@...adcom.com,
        vishal@...lsio.com, jeffrey.t.kirsher@...el.com,
        idosch@...lanox.com, aelior@...vell.com, peppe.cavallaro@...com,
        alexandre.torgue@...com, jhs@...atatu.com,
        xiyou.wangcong@...il.com, ecree@...arflare.com, mlxsw@...lanox.com
Subject: Re: [patch net-next v2 08/12] flow_offload: introduce "immediate" HW
 stats type and allow it in mlxsw

On Sun, Mar 01, 2020 at 09:47:16AM +0100, Jiri Pirko wrote:
> Sat, Feb 29, 2020 at 08:32:18PM CET, pablo@...filter.org wrote:
> >On Fri, Feb 28, 2020 at 06:25:01PM +0100, Jiri Pirko wrote:
> >[...]
> >> @@ -31,7 +31,8 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
> >>  
> >>  	act = flow_action_first_entry_get(flow_action);
> >>  	switch (act->hw_stats_type) {
> >> -	case FLOW_ACTION_HW_STATS_TYPE_ANY:
> >> +	case FLOW_ACTION_HW_STATS_TYPE_ANY: /* fall-through */
> >> +	case FLOW_ACTION_HW_STATS_TYPE_IMMEDIATE:
> >
> >This TYPE_ANY mean that driver picks the counter type for you?
> 
> Driver pick any counter, yes.
> 
> >Otherwise, users will not have a way to know how to interpret what
> >kind of counter this is.
> 
> User does not care in this case.

OK.

When listing back the counters, will the user get what counter type
the driver has selected?