netdev - Re: [PATCH net,v4] net: flow_offload: skip hw stats check for FLOW_ACTION_HW_STATS_DONT

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Message-Id: <20200506.201415.143642826953424088.davem@davemloft.net>
Date:   Wed, 06 May 2020 20:14:15 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     pablo@...filter.org
Cc:     netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
        jiri@...nulli.us, kuba@...nel.org, ecree@...arflare.com
Subject: Re: [PATCH net,v4] net: flow_offload: skip hw stats check for
 FLOW_ACTION_HW_STATS_DONT_CARE

From: Pablo Neira Ayuso <pablo@...filter.org>
Date: Wed,  6 May 2020 20:34:50 +0200

> This patch adds FLOW_ACTION_HW_STATS_DONT_CARE which tells the driver
> that the frontend does not need counters, this hw stats type request
> never fails. The FLOW_ACTION_HW_STATS_DISABLED type explicitly requests
> the driver to disable the stats, however, if the driver cannot disable
> counters, it bails out.
> 
> TCA_ACT_HW_STATS_* maintains the 1:1 mapping with FLOW_ACTION_HW_STATS_*
> except by disabled which is mapped to FLOW_ACTION_HW_STATS_DISABLED
> (this is 0 in tc). Add tc_act_hw_stats() to perform the mapping between
> TCA_ACT_HW_STATS_* and FLOW_ACTION_HW_STATS_*.
> 
> Fixes: 319a1d19471e ("flow_offload: check for basic action hw stats type")
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
> ---
> v4: Update mlxsw as Jiri prefers.

Applied, thank you.