Re: [PATCH net v2] net: ethtool: Allow matching on vlan DEI bit

[David Miller]

From: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
Date: Wed, 12 Jun 2019 17:18:38 +0200

> Using ethtool, users can specify a classification action matching on the
> full vlan tag, which includes the DEI bit (also previously called CFI).
> 
> However, when converting the ethool_flow_spec to a flow_rule, we use
> dissector keys to represent the matching patterns.
> 
> Since the vlan dissector key doesn't include the DEI bit, this
> information was silently discarded when translating the ethtool
> flow spec in to a flow_rule.
> 
> This commit adds the DEI bit into the vlan dissector key, and allows
> propagating the information to the driver when parsing the ethtool flow
> spec.
> 
> Fixes: eca4205f9ec3 ("ethtool: add ethtool_rx_flow_spec to flow_rule structure translator")
> Reported-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
> Signed-off-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
> ---
> V1 -> V2: Use "DEI" instead of the old name "CFI", as suggested by Toshiaki.
>           Perform endianness swap on the constant, sothat it's done at
> 	  build-time, as suggested by Jakub.

Applied and queued up for -stable, thanks.