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MGonc2
Beginner
1,359 Views

Does the i40e driver support vlan hardware filter s?

I am trying to filter network packets based on vlan tag ids. Using wireshark I can capture/inspect packets with 2 different VLAN IDs on my network. I was hoping to suppress packets associated a particular VLAN ID. So, using the ethtool I added a hardware filter as follows:

sudo ethtool -U eth11 flow-type udp4 vlan 0x65 vlan-ask 0xE000 action -1 and

sudo ethtool -U eth11 flow-type udp4 vlan 0x67 vlan-ask 0xE000 action -1

Both commands are accepted (I observe 2 message indicating that rule 2001 and 2002 has been added, respectively)

After execution of the above commands, no packets associated with VLAN 0x65 or 0x67 are received (good - what I expected). As soon as I clear

one of the hardware filters via ethtool (sudo ethtool eth11 delete 2001) I receive packets associated with both VLAN Tags 0x65 and 0x66).

I was wondering if intel driver i40e truely supports hardware filtering?

Thanks

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6 Replies
idata
Community Manager
252 Views

Hi MangoCebu,

 

 

Thank you for posting at Wired Communities. Let me further check regarding hardware filtering, I will keep you posted with further updates.

 

 

Thanks,

 

sharon

 

idata
Community Manager
252 Views

Hi MangoCebu,

 

 

Please provide the Intel(R) network adapter involved, Linux distribution, Ethtool -i and Ethtool -k output. These information will be helpful in our investigation. Thanks.

 

 

Regards,

 

Vince
MGonc2
Beginner
252 Views

Hello,

Below is the requested additional information. Please note that my workstation contains two Intel network adapters (X710 and X540-AT2). Hardware filtering is working for the X540-AT2 network adapter but it is not working correctly for the X710 adapter.

I have provided information for both adapters below. Also of possible interest, the X540-AT2 card provides VLAN information when the command ethtool --show-tuple eth8 is invoked. The X710 never reports any VLAN information for the show-tuple command.

****eth11 network interface card information (hardware filtering not working correctly)

adapter: Intel Corporation Ethernet Controller X710 for 10Gbe SFP+

------------------------------------------------------------------

ethtool -i eth11 output :

driver: i40e

version: 1.5.18

firmware-version: 4.53 0x800001f99 0.0.0

bus-info:0000:11:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: yes

------------------------------------------------------------------

ethtool -k eth11 output :

rx-checksumming: on

tx-checksumming: on

tx-checksum-ipv4: on

tx-checksum-unneeded: off [fixed]

tx-checksum-ip-generic: off [fixed]

tx-checksum-ipv6: on

tx-checksum-fcoe-crc: off [fixed]

tx-checksum-sctp: on

scatter-gather: off

tx-scatter-gather:off

tx-scatter-gather-fraglist: off [fixed]

tcp-segmentation-offload: off

tx-tcp-segmentation: off

tx-tcp-ecn-segmentation: off

tx-tcp6-segmentation: off

udp-segmentation-offload: off [fixed]

generic-segmentation-offload: off

generic-receive-offload: off

large-receive-offload: off [fixed]

rx-vlan-offload: off

tx-vlan-offload: on

ntuple-filters: on

receive-hashing: on

highdma: on

rx-vlan-filter: on

vlan-challenged: off [fixed]

tx-lockless: off [fixed]

netns-local: off [fixed]

tx-gso-robust: off [fixed]

tx-fcoe-segmentation: off [fixed]

tx-gre-segmentation: off [fixed]

tx-udp_tnl-segmentation: off [fixed]

fcoe-mtu: off [fixed]

loopback: off [fixed]

After entering the folowing hw filter sudo ethtool -U eth11 flow-type udp4 vlan 0x65 vlan-mask 0xE000 action 01

I run the following ethtool --show-tuple eth11 and observe the following:

Filter: 7423

Rule Type: UDP over IPv4

Src Ip addr: 0.0.0.0 mask: 255.255.255.255

Dest Ip addr: 0.0.0.0 mask: 255.255.255.255 (No VLAN information is provided for this adapter (X710)

TOS: 0x0 mask: 0xff

Src port: 0 mask: 0xffff

Dest port: 0 mask: 0xffff

Action: Drop

==================================================================

eth8 network interface card information (hardware filtering is working)

adapter: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2

eth8 network interface card ethtool -i eth8 output :

driver: ixgbe

version: 4.0.1-k

firmware-version: 0x80000313

bus-info:0000:81:00.0

supports-statistics: yes

supports-test: yes

supports-eeprom-access:yes

supports-register-dump:yes

supports-priv-flags:no

ethtool -k eth8 output :

rx-checksumming: on

tx-checksumming: on

tx-checksum-ipv4: on

tx-checksum-unneeded: off

tx-checksum-ip-generic: off

tx-checksum-ipv6: on

tx-checksum-fcoe-crc: on [fixed]

tx-checksum-sctp: on [fixed]

scatter-gather: on

tx-scatter-gather:on

tx-scatter-gather-fraglist: off [fixed]

tcp-segmentation-offload: on

tx-tcp-segmentation: on

tx-tcp-ecn-segmentation: off

tx-tcp6-segmentation: on

udp-segmentation-offload: off [fixed]

generic-segmentation-offload: on

generic-receive-offload: on

large-receive-offload: on

rx-vlan-offload: on

tx-vlan-offload: on

ntuple-filters: off

receive-hashing: on

highdma: on [fixed]

rx-vlan-filter: on [fixed]

vlan-challenged: off [fixed]

tx-lockless: off [fixed]

netns-local: off [fixed]

tx-gso-robust: off [fixed]

tx-fcoe-segmentation: on [fixed]

tx-gre-segmentation: off [fixed]

tx-udp_tnl-segmentation: off [fixed]

fcoe-mtu: off [fixed]

loopback: off [fixed]

After entering the folowing hw filter sudo ethtool -U eth8 flow-type udp4 vlan 0x65 vlan-mask 0xE000 action 01

I run the following ethtool --show-tuple eth8 and observe the following:

Filter: 2045

Rule Type: UDP over IPv4

Src Ip addr: 0.0.0.0 mask: 255.255.255.255

Dest Ip addr: 0.0.0.0 mask: 255.255.255.255

TOS: 0x0 mask: 0xff

Src port: 0 mask: 0xffff

Dest port: 0 mask: 0xffff

VLAN EtherType: 0x0 mask 0xffff (VLAN information is provided)

VLAN: 0x65 mask: 0xe000

User-defined: 0x0 mask: 0xffffffffffffffff

Action: Drop

Thanks,

Manny

idata
Community Manager
252 Views

Hi Manny, thank you for providing the requested information and your observation with implementing VLAN hardware filtering using X540 and X710. I'm currently checking your issue and will update this thread as soon as possible.

 

 

regards,

 

Vince
idata
Community Manager
252 Views

Hi Manny, after further investigation, VLAN field for Flow Director is not explicitly supported in the i40e driver, kindly refer to the readme file ( https://downloadmirror.intel.com/26370/eng/readme.txt) for reference.

 

 

 

regards,

 

Vince

 

 

idata
Community Manager
252 Views

Hi Manny,

 

 

Please feel free to update me if you still have other inquiries. Thank you.

 

 

rgds,

 

sharon

 

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