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

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Date:	Fri, 08 Apr 2011 21:44:09 -0700
From:	Alexander H Duyck <alexander.h.duyck@...el.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	"davem@...emloft.net" <davem@...emloft.net>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"netdev@...r.kernel.org" <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 17:13 -0700, Ben Hutchings wrote:
> 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.
> 
I completely forgot all about that.  Thanks for catching it.

v3 is updated and submitted.

Alex

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