Subject: Re: how to set vlan filter for intel 82599

From: Alexander Duyck <[email-masked]>
Date: Tue, 26 Apr 2011 08:22:55 -0700

On 4/26/2011 6:31 AM, Ben Hutchings wrote:
> On Tue, 2011-04-26 at 12:39 +0800, zhou rui wrote:
> [...]
>> i set the filter like below:
>>
>> for a vlanid=50, it always match the last rule (action 7)
>>
>> ./ethtool -K eth5 ntuple off
>> ./ethtool -K eth5 ntuple on
>> ./ethtool -U eth5 flow-type tcp4 vlan 32 vlan-mask 0xF01F action 1
>> ./ethtool -U eth5 flow-type udp4 vlan 32 vlan-mask 0xF01F action 1
>> ./ethtool -U eth5 flow-type udp4 vlan 64 vlan-mask 0xF01F action 7
>> ./ethtool -U eth5 flow-type tcp4 vlan 64 vlan-mask 0xF01F action 7
>>
>> I tried the latest ixgbe driver 3.3.9, it reports:
>>
>> Cannot add new RX n-tuple filter: Operation not permitted
>>
>> ./ethtool -V
>> ethtool version 2.6.36
>
> Check dmesg; there should be an error message there.  Of course the
> error code should be EINVAL and not EPERM.
>
> Ben.
>

The problem is likely the vlan-mask.  The only valid VLAN masks 
supported are 0xFFFF, 0x0FFF, 0xF000, and 0x0000.  The hardware cannot 
partially mask either the priority nor the VLAN TCI.

Thanks,

Alex