netdev - AW: PROBLEM: (DSA/Microchip): 802.1Q-Header lost on KSZ9477-DSA ingress without bridge

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Message-ID: <0c963932e9174ef1a58f684cd5754a1a@BK99MAIL02.bk.local>
Date:   Wed, 5 Aug 2020 05:45:51 +0000
From:   "Gaube, Marvin (THSE-TL1)" <Marvin.Gaube@...at.de>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
CC:     Woojung Huh <woojung.huh@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: AW: PROBLEM: (DSA/Microchip): 802.1Q-Header lost on KSZ9477-DSA
 ingress without bridge

Hello,
I'm using the upstream driver Vladimir mentioned, as of 5.4.51.

Best regards
Marvin Gaube

-----Ursprüngliche Nachricht-----
Von: Florian Fainelli <f.fainelli@...il.com>
Gesendet: Dienstag, 4. August 2020 22:20
An: Vladimir Oltean <olteanv@...il.com>
Cc: Gaube, Marvin (THSE-TL1) <Marvin.Gaube@...at.de>; Woojung Huh <woojung.huh@...rochip.com>; Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>; netdev@...r.kernel.org
Betreff: Re: PROBLEM: (DSA/Microchip): 802.1Q-Header lost on KSZ9477-DSA ingress without bridge



On 8/4/2020 12:54 PM, Vladimir Oltean wrote:
> On Tue, Aug 04, 2020 at 08:51:00AM -0700, Florian Fainelli wrote:
>> "I looked into it deeper, the driver does rxvlan offloading."
>>
>> Is this part of the driver upstream or are you using a vendor tree
>> from Freescale which has that change included?
>>
>
> Does it matter?

If this was a downstream problem yes, there would not necessarily be a pressing need to address it with a patch targeting 'net' for instance.
This is not the case, therefore it should be addressed.

> FWIW, mainline fec does declare NETIF_F_HW_VLAN_CTAG_RX:
> https://elixir.bootlin.com/linux/latest/source/drivers/net/ethernet/fr
> eescale/fec_main.c#L3317 and move it to the hwaccel area on RX:
> https://elixir.bootlin.com/linux/latest/source/drivers/net/ethernet/fr
> eescale/fec_main.c#L1513
>

--
Florian

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