netdev - Re: [PATCH ethtool 3/3] ethtool: add ETHTOOL

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Date:	Tue, 04 Oct 2011 23:36:39 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
Cc:	netdev@...r.kernel.org,
	Dept_NX_Linux_NIC_Driver <Dept_NX_Linux_NIC_Driver@...gic.com>
Subject: Re: [PATCH ethtool 3/3] ethtool: add ETHTOOL_{G,S}CHANNEL support.

On Tue, 2011-10-04 at 23:21 +0100, Ben Hutchings wrote:
> On Tue, 2011-09-20 at 03:31 -0700, Sucheta Chakraborty wrote:
> > Used to configure number of rx and tx rings.
> > Reqd. man page changes are included.
> [...]
> > @@ -754,6 +764,24 @@ lB	l.
> >  Specify the location/ID to insert the rule. This will overwrite
> >  any rule present in that location and will not go through any
> >  of the rule ordering process.
> > +.TP
> > +.B \-l \-\-show\-channels
> > +Queries the specified network device for channel parameter information.
> > +.TP
> > +.B \-L \-\-set\-channels
> > +Changes the channel parameters of the specified network device.
> 
> I think the manual page needs to explain briefly what is meant by a
> channel.  (So should ethtool.h, really!)
[...]

Perhaps something like this:

.TP
.B \-l \-\-show\-channels
Queries the specified network device for the numbers of channels it has.
A channel is an IRQ and the set of queues that can trigger that IRQ.
.TP
.B \-L \-\-set\-channels
Changes the numbers of channels of the specified network device.
.TP
.BI rx \ N
Changes the number of channels with only receive queues.
.TP
.BI tx \ N
Changes the number of channels with only transmit queues.
.TP
.BI other \ N
Changes the number of channels used only for other purposes e.g. link
interrupts or SR-IOV co-ordination.
.TP
.BI combined \ N
Changes the number of multi-purpose channels.

Ben.

-- 
Ben Hutchings, Staff 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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