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Miller" , Jakub Kicinski , Matthias Brugger , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC net-next 1/2] net: dsa: tag_mtk: skip address learning on transmit to standalone ports Message-ID: <20210730174135.ycsq3dhpr57roxsy@skbuf> References: <20210728175327.1150120-1-dqfext@gmail.com> <20210728175327.1150120-2-dqfext@gmail.com> <20210728183705.4gea64qlbe64kkpl@skbuf> <20210730162403.p2dnwvwwgsxttomg@skbuf> <20210730173203.518307-1-dqfext@gmail.com> <20210730173902.vezop3n55bk63o6f@skbuf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210730173902.vezop3n55bk63o6f@skbuf> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 30, 2021 at 08:39:02PM +0300, Vladimir Oltean wrote: > On Sat, Jul 31, 2021 at 01:32:03AM +0800, DENG Qingfang wrote: > > On Fri, Jul 30, 2021 at 07:24:03PM +0300, Vladimir Oltean wrote: > > > Considering that you also have the option of setting > > > ds->assisted_learning_on_cpu_port = true and this will have less false > > > positives, what are the reasons why you did not choose that approach? > > > > You're right. Hardware learning on CPU port does have some limitations. > > > > I have been testing a multi CPU ports patch, and assisted learning has > > to be used, because FDB entries should be installed like multicast > > ones, which point to all CPU ports. > > Ah, mt7530 is one of the switches which has multiple CPU ports, I had > forgotten that. In that case, then static FDB entries are pretty much > the only way to go indeed. I forget which ones are the modes in which the multi-CPU feature on mt7530 is supposed to be used: static assignment of user ports to CPU ports, or LAG between the CPU ports, or a mix of both?