netdev - Re: [PATCH iwl-next v3 2/2] ice: Implement 'flow-type ether' rules

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Message-ID: <bf21c58e-a857-4096-932a-cc9718ab9779@intel.com>
Date: Wed, 20 Dec 2023 15:19:28 +0100
From: "Plachno, Lukasz" <lukasz.plachno@...el.com>
To: Brett Creeley <bcreeley@....com>, <intel-wired-lan@...ts.osuosl.org>
CC: <netdev@...r.kernel.org>, Jakub Buchocki <jakubx.buchocki@...el.com>,
	Mateusz Pacuszka <mateuszx.pacuszka@...el.com>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>
Subject: Re: [PATCH iwl-next v3 2/2] ice: Implement 'flow-type ether' rules

On 12/19/2023 6:35 PM, Brett Creeley wrote:
> 
> 
> On 12/13/2023 8:34 PM, Lukasz Plachno wrote:
>> Caution: This message originated from an External Source. Use proper 
>> caution when opening attachments, clicking links, or responding.
>>
>>
>> From: Jakub Buchocki <jakubx.buchocki@...el.com>
>>
>> Add support for 'flow-type ether' Flow Director rules via ethtool.
>>
>> Rules not containing masks are processed by the Flow Director,
>> and support the following set of input parameters in all combinations:
>> src, dst, proto, vlan-etype, vlan, action.
>>
>> It is possible to specify address mask in ethtool parameters but only
>> 00:00:00:00:00 and FF:FF:FF:FF:FF are valid.
>> The same applies to proto, vlan-etype and vlan masks:
>> only 0x0000 and 0xffff masks are valid.
> 
> Would it be useful to have user facing error messages for invalid masks 
> stating what the valid masks are?
> 

Do you think about something like:
dev_warn("Driver only supports masks 00:00:00:00:00:00 and 
FF:FF:FF:FF:FF:FF"),
or there is a way to pass custom message to ethtool to print it to user?

>>
>> Signed-off-by: Jakub Buchocki <jakubx.buchocki@...el.com>
>> Co-developed-by: Mateusz Pacuszka <mateuszx.pacuszka@...el.com>
>> Signed-off-by: Mateusz Pacuszka <mateuszx.pacuszka@...el.com>
>> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
>> Signed-off-by: Lukasz Plachno <lukasz.plachno@...el.com>
>> ---
>>   .../net/ethernet/intel/ice/ice_ethtool_fdir.c | 128 +++++++++++++++++-
>>   drivers/net/ethernet/intel/ice/ice_fdir.c     |  27 ++++
>>   drivers/net/ethernet/intel/ice/ice_fdir.h     |  11 ++
>>   drivers/net/ethernet/intel/ice/ice_type.h     |   1 +
>>   4 files changed, 166 insertions(+), 1 deletion(-)
>>
> 
> [...]