[Intel-wired-lan] [PATCH iwl-net] igc: Check VLAN EtherType mask
naamax.meir
naamax.meir at linux.intel.com
Tue Dec 26 17:01:55 UTC 2023
On 12/6/2023 16:07, Kurt Kanzenbach wrote:
> Currently the driver accepts VLAN EtherType steering rules regardless of
> the configured mask. And things might fail silently or with confusing error
> messages to the user. The VLAN EtherType can only be matched by full
> mask. Therefore, add a check for that.
>
> For instance the following rule is invalid, but the driver accepts it and
> ignores the user specified mask:
> |root at host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
> | m 0x00ff action 0
> |Added rule with ID 63
> |root at host:~# ethtool --show-ntuple enp3s0
> |4 RX rings available
> |Total 1 rules
> |
> |Filter: 63
> | Flow Type: Raw Ethernet
> | Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
> | Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
> | Ethertype: 0x0 mask: 0xFFFF
> | VLAN EtherType: 0x8100 mask: 0x0
> | VLAN: 0x0 mask: 0xffff
> | User-defined: 0x0 mask: 0xffffffffffffffff
> | Action: Direct to queue 0
>
> After:
> |root at host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
> | m 0x00ff action 0
> |rmgr: Cannot insert RX class rule: Operation not supported
>
> Fixes: 2b477d057e33 ("igc: Integrate flex filter into ethtool ops")
> Suggested-by: Suman Ghosh <sumang at marvell.com>
> Signed-off-by: Kurt Kanzenbach <kurt at linutronix.de>
> ---
>
> Note: This is a follow up of
>
> https://lore.kernel.org/netdev/20231201075043.7822-1-kurt@linutronix.de/
>
> and should apply to net-queue tree.
>
> drivers/net/ethernet/intel/igc/igc_ethtool.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
Tested-by: Naama Meir <naamax.meir at linux.intel.com>
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