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([2600:1700:dfe0:49f0:5c21:b591:3efd:575e]) by smtp.gmail.com with ESMTPSA id i25sm3158888oto.56.2020.12.12.19.49.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 12 Dec 2020 19:49:38 -0800 (PST) Subject: Re: [PATCH v2 net-next 6/6] net: dsa: ocelot: request DSA to fix up lack of address learning on CPU port To: Vladimir Oltean , Andrew Lunn , Vivien Didelot , Jakub Kicinski , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bridge@lists.linux-foundation.org, Roopa Prabhu , Nikolay Aleksandrov , "David S. Miller" Cc: DENG Qingfang , Tobias Waldekranz , Marek Behun , Russell King - ARM Linux admin , Alexandra Winter , Jiri Pirko , Ido Schimmel , Claudiu Manoil References: <20201213024018.772586-1-vladimir.oltean@nxp.com> <20201213024018.772586-7-vladimir.oltean@nxp.com> From: Florian Fainelli Message-ID: <77d952ad-0aed-8e79-df03-ee6a7f42ef55@gmail.com> Date: Sat, 12 Dec 2020 19:49:34 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: <20201213024018.772586-7-vladimir.oltean@nxp.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 12/12/2020 6:40 PM, Vladimir Oltean wrote: > Given the following setup: > > ip link add br0 type bridge > ip link set eno0 master br0 > ip link set swp0 master br0 > ip link set swp1 master br0 > ip link set swp2 master br0 > ip link set swp3 master br0 > > Currently, packets received on a DSA slave interface (such as swp0) > which should be routed by the software bridge towards a non-switch port > (such as eno0) are also flooded towards the other switch ports (swp1, > swp2, swp3) because the destination is unknown to the hardware switch. > > This patch addresses the issue by monitoring the addresses learnt by the > software bridge on eno0, and adding/deleting them as static FDB entries > on the CPU port accordingly. > > Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli -- Florian