linux-kernel - Re: [PATCH] r8152: Add MAC passthrough support to new device

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Date:   Wed, 15 Jan 2020 14:40:03 +0800
From:   Kai Heng Feng <kai.heng.feng@...onical.com>
To:     Mario.Limonciello@...l.com
Cc:     David Miller <davem@...emloft.net>, hayeswang@...ltek.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        pmalani@...omium.org, grundler@...omium.org,
        "<David.Chen7@...l.com>" <David.Chen7@...l.com>,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] r8152: Add MAC passthrough support to new device



> On Jan 15, 2020, at 4:33 AM, Mario.Limonciello@...l.com wrote:
> 
> 
> 
>> -----Original Message-----
>> From: Kai-Heng Feng <kai.heng.feng@...onical.com>
>> Sent: Monday, January 13, 2020 10:41 PM
>> To: davem@...emloft.net; hayeswang@...ltek.com
>> Cc: Kai-Heng Feng; Jakub Kicinski; Prashant Malani; Grant Grundler; Limonciello,
>> Mario; Chen7, David; open list:USB NETWORKING DRIVERS; open list:NETWORKING
>> DRIVERS; open list
>> Subject: [PATCH] r8152: Add MAC passthrough support to new device
>> 
>> 
>> [EXTERNAL EMAIL]
>> 
>> Device 0xa387 also supports MAC passthrough, therefore add it to the
>> whitelst.
> 
> Have you confirmed whether this product ID is unique to the products that
> support this feature or if it's also re-used in other products?

This is unique for Lenovo product.

> 
> For Dell's devices there are very specific tests that make sure that this
> feature only applies on the products it is supposed to and nothing else
> (For example RTL8153-AD checks variant as well as effuse value)
> (Example two: RTL8153-BND is a Dell only part).

Hayes, do you know how macpassthru on Lenovo dock works?

Kai-Heng

> 
>> 
>> BugLink: https://bugs.launchpad.net/bugs/1827961/comments/30
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
>> ---
>> drivers/net/usb/r8152.c | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>> 
>> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
>> index c5ebf35d2488..42dcf1442cc0 100644
>> --- a/drivers/net/usb/r8152.c
>> +++ b/drivers/net/usb/r8152.c
>> @@ -6657,7 +6657,8 @@ static int rtl8152_probe(struct usb_interface *intf,
>> 	}
>> 
>> 	if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO &&
>> -	    le16_to_cpu(udev->descriptor.idProduct) == 0x3082)
>> +	    (le16_to_cpu(udev->descriptor.idProduct) == 0x3082 ||
>> +	     le16_to_cpu(udev->descriptor.idProduct) == 0xa387))
>> 		set_bit(LENOVO_MACPASSTHRU, &tp->flags);
>> 
>> 	if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial
>> &&
>> --
>> 2.17.1
>