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Date:   Sat, 3 Apr 2021 16:03:18 +0300
From:   Vladimir Oltean <olteanv@gmail.com>
To:     Oleksij Rempel <o.rempel@pengutronix.de>
Cc:     Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mips@vger.kernel.org
Subject: Re: [PATCH net-next v1 2/9] net: dsa: tag_ar9331: detect IGMP and
 MLD packets
Message-ID: <20210403130318.lqkd6id7gehg3bin@skbuf>
References: <20210403114848.30528-1-o.rempel@pengutronix.de>
 <20210403114848.30528-3-o.rempel@pengutronix.de>
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In-Reply-To: <20210403114848.30528-3-o.rempel@pengutronix.de>
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Hi Oleksij,

On Sat, Apr 03, 2021 at 01:48:41PM +0200, Oleksij Rempel wrote:
> The ar9331 switch is not forwarding IGMP and MLD packets if IGMP
> snooping is enabled. This patch is trying to mimic the HW heuristic to take
> same decisions as this switch would do to be able to tell the linux
> bridge if some packet was prabably forwarded or not.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---

I am not familiar with IGMP/MLD, therefore I don't really understand
what problem you are trying to solve.

Your switch has packet traps for IGMP and MLD, ok. So it doesn't forward
them. Must the IGMP/MLD packets be forwarded by an IGMP/MLD snooping
bridge? Which ones and under what circumstances?