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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, Eric Woudstra , =?utf-8?B?UmVuw6k=?= van Dorst , Frank Wunderlich , Ilya Lipnitskiy Subject: Re: [PATCH net-next 4/4] net: dsa: mt7530: always install FDB entries with IVL and FID 1 Message-ID: <20210803144552.fluxxfoey2tbqyyu@skbuf> References: <20210803124022.2912298-1-dqfext@gmail.com> <20210803124022.2912298-5-dqfext@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210803124022.2912298-5-dqfext@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210803_074556_102681_BD8890F7 X-CRM114-Status: GOOD ( 24.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Aug 03, 2021 at 08:40:22PM +0800, DENG Qingfang wrote: > This reverts commit 7e777021780e ("mt7530 mt7530_fdb_write only set ivl > bit vid larger than 1"). > > Before this series, the default value of all ports' PVID is 1, which is > copied into the FDB entry, even if the ports are VLAN unaware. So > `bridge fdb show` will show entries like `dev swp0 vlan 1 self` even on > a VLAN-unaware bridge. > > The blamed commit does not solve that issue completely, instead it may > cause a new issue that FDB is inaccessible in a VLAN-aware bridge with > PVID 1. > > This series sets PVID to 0 on VLAN-unaware ports, so `bridge fdb show` > will no longer print `vlan 1` on VLAN-unaware bridges, and that special > case in fdb_write is not required anymore. > > Set FDB entries' filter ID to 1 to match the VLAN table. > > Signed-off-by: DENG Qingfang > --- > RFC -> v1: Detailed commit message. Also set FDB entries' FID to 1. > > drivers/net/dsa/mt7530.c | 4 ++-- > drivers/net/dsa/mt7530.h | 1 + > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c > index 8d84d7ddad38..ac2b45e472bd 100644 > --- a/drivers/net/dsa/mt7530.c > +++ b/drivers/net/dsa/mt7530.c > @@ -366,8 +366,8 @@ mt7530_fdb_write(struct mt7530_priv *priv, u16 vid, > int i; > > reg[1] |= vid & CVID_MASK; > - if (vid > 1) > - reg[1] |= ATA2_IVL; > + reg[1] |= ATA2_IVL; > + reg[1] |= ATA2_FID(1); Maybe it would be good to resend with a set of #defines for the standalone/bridged port FID values after all, what do you think? > reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER; > reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP; > /* STATIC_ENT indicate that entry is static wouldn't > diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h > index 53b7bb1f5368..73b0e0eb8f2f 100644 > --- a/drivers/net/dsa/mt7530.h > +++ b/drivers/net/dsa/mt7530.h > @@ -80,6 +80,7 @@ enum mt753x_bpdu_port_fw { > #define STATIC_ENT 3 > #define MT7530_ATA2 0x78 > #define ATA2_IVL BIT(15) > +#define ATA2_FID(x) (((x) & 0x7) << 12) > > /* Register for address table write data */ > #define MT7530_ATWD 0x7c > -- > 2.25.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel