netdev - Re: [PATCH net] r8169: don't advertise pause in jumbo mode

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Date:   Wed, 14 Apr 2021 09:56:30 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>
Cc:     Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Roman Mamedov <rm+bko@...anrm.net>
Subject: Re: [PATCH net] r8169: don't advertise pause in jumbo mode

On 14.04.2021 09:49, Greg KH wrote:
> On Wed, Apr 14, 2021 at 09:40:51AM +0200, Heiner Kallweit wrote:
>> It has been reported [0] that using pause frames in jumbo mode impacts
>> performance. There's no available chip documentation, but vendor
>> drivers r8168 and r8125 don't advertise pause in jumbo mode. So let's
>> do the same, according to Roman it fixes the issue.
>>
>> [0] https://bugzilla.kernel.org/show_bug.cgi?id=212617
>>
>> Fixes: 9cf9b84cc701 ("r8169: make use of phy_set_asym_pause")
>> Reported-by: Roman Mamedov <rm+bko@...anrm.net>
>> Tested-by: Roman Mamedov <rm+bko@...anrm.net>
>> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
>> ---
>> This patch doesn't apply cleanly on some kernel versions, but the needed
>> changes are trivial.
>> ---
>>  drivers/net/ethernet/realtek/r8169_main.c | 9 +++++++--
>>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> 
> <formletter>
> 
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree.  Please read:
>     https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.
> 
> </formletter>
> 
Until recently the procedure in netdev has been to annotate the patch as
"net" and not cc stable. IIRC there is an experiment to cc stable.
If this isn't applicable any longer and the old process still applies,
then please ignore the cc'ed stable.