linux-kernel - Re: [PATCH net-next v2 2/3] net: ethernet: ti: am65-cpsw: enable bc/mc storm prevention support

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Date:   Tue, 2 Nov 2021 17:38:40 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Grygorii Strashko <grygorii.strashko@...com>
Cc:     "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        <linux-omap@...r.kernel.org>, Tony Lindgren <tony@...mide.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [PATCH net-next v2 2/3] net: ethernet: ti: am65-cpsw: enable
 bc/mc storm prevention support

On Mon, 1 Nov 2021 19:01:21 +0200 Grygorii Strashko wrote:
>  - 01:00:00:00:00:00 fixed value has to be used for MC packets rate
>    limiting (exact match)

This looks like a stretch, why not use a mask? You can require users to
always install both BC and MC rules if you want to make sure the masked
rule does not match BC.