netdev - Re: [net-next-2.6 PATCH] v2 ethtool: add ntuple flow specifier data to network flow classifier

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Date:	Sat, 09 Apr 2011 01:13:06 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Alexander Duyck <alexander.h.duyck@...el.com>
Cc:	davem@...emloft.net, jeffrey.t.kirsher@...el.com,
	netdev@...r.kernel.org, Santwona Behera <santwona.behera@....com>
Subject: Re: [net-next-2.6 PATCH] v2 ethtool: add ntuple flow specifier
 data to network flow classifier

On Fri, 2011-04-08 at 15:34 -0700, Alexander Duyck wrote:
> This change is meant to add an ntuple data extensions to the rx network flow
> classification specifiers.  The idea is to allow ntuple to be displayed via
> the network flow classification interface.
[...]
>  /**
>   * struct ethtool_rx_flow_spec - specification for RX flow filter
>   * @flow_type: Type of match to perform, e.g. %TCP_V4_FLOW
>   * @h_u: Flow fields to match (dependent on @flow_type)
> + * @h_ext: Additional fields to match
>   * @m_u: Masks for flow field bits to be ignored
> + * @m_ext: Masks for additional field bits to be ignored.
> + *	Note, all additional fields must be ignored unless @flow_type
> + *	includes the %FLOW_EXT flag.
[...]

Sorry I didn't bring this up against v1:

I think you worked out that these masks are interpreted as bits to be
matched, rather than bits to be ignored, in the existing implementation
in niu.  Looking again at niu, I think that you were right about that.
So please fix the comment while you're updating it.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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