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From: DENG Qingfang <dqfext@gmail.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: Sean Wang <sean.wang@mediatek.com>,
	Landen Chao <Landen.Chao@mediatek.com>,
	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>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] net: dsa: mt7530: drop untagged frames on VLAN-aware ports without PVID
Date: Fri,  6 Aug 2021 10:34:23 +0800	[thread overview]
Message-ID: <20210806023423.519560-1-dqfext@gmail.com> (raw)
In-Reply-To: <20210806001740.cayorz3vlfrvk75l@skbuf>

On Fri, Aug 06, 2021 at 03:17:40AM +0300, Vladimir Oltean wrote:
> 
> Good catch with this condition, sja1105 and ocelot are buggy in this
> regard, it seems, probably others too. Need to fix them. Although
> honestly I would probably rather spend the time patching the bridge
> already to not accept duplicate VLAN entries from user space, just with
> different flags, it's just too complex to handle the overwrites everywhere...
> Plus, bridge accepting duplicate VLANs means we cannot refcount them on
> DSA and CPU ports at the cross-chip level, which in turn means we can
> never delete them from those ports.
> 
> Anyhow, enough rambling.
> 
> Reviewed-by: Vladimir Oltean <olteanv@gmail.com>

Please allow me to send a v2. This sets the CPU port's PVID to 0
on boot, which causes some undefined behaviour..

      reply	other threads:[~2021-08-06  2:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 17:23 DENG Qingfang
2021-08-06  0:17 ` Vladimir Oltean
2021-08-06  2:34   ` DENG Qingfang [this message]

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