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Date:   Fri, 22 May 2020 15:52:20 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH v4 net-next] net: flow_offload: simplify hw stats check

From: Edward Cree <>
Date: Wed, 20 May 2020 19:18:10 +0100

> Make FLOW_ACTION_HW_STATS_DONT_CARE be all bits, rather than none, so that
>  drivers and __flow_action_hw_stats_check can use simple bitwise checks.
> Pre-fill all actions with DONT_CARE in flow_rule_alloc(), rather than
>  relying on implicit semantics of zero from kzalloc, so that callers which
>  don't configure action stats themselves (i.e. netfilter) get the correct
>  behaviour by default.
> Only the kernel's internal API semantics change; the TC uAPI is unaffected.
> v4: move DONT_CARE setting to flow_rule_alloc() for robustness and simplicity.
> v3: set DONT_CARE in nft and ct offload.
> v2: rebased on net-next, removed RFC tags.
> Signed-off-by: Edward Cree <>

Applied, thanks Edward.

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