netdev - Re: [PATCH net] ethtool: fix the check logic of at least one channel for RX/TX

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Date:   Wed, 24 Feb 2021 02:10:11 +0100
From:   Michal Kubecek <mkubecek@...e.cz>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Simon Horman <simon.horman@...ronome.com>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        oss-drivers@...ronome.com,
        Yinjun Zhang <yinjun.zhang@...igine.com>,
        Louis Peens <louis.peens@...ronome.com>
Subject: Re: [PATCH net] ethtool: fix the check logic of at least one channel
 for RX/TX

On Tue, Feb 23, 2021 at 05:02:06PM -0800, Jakub Kicinski wrote:
> On Wed, 24 Feb 2021 01:32:51 +0100 Michal Kubecek wrote:
> > On Tue, Feb 23, 2021 at 02:24:40PM +0100, Simon Horman wrote:
> > > From: Yinjun Zhang <yinjun.zhang@...igine.com>
> > > 
> > > The command "ethtool -L <intf> combined 0" may clean the RX/TX channel
> > > count and skip the error path, since the attrs
> > > tb[ETHTOOL_A_CHANNELS_RX_COUNT] and tb[ETHTOOL_A_CHANNELS_TX_COUNT]
> > > are NULL in this case when recent ethtool is used.
> > > 
> > > Tested using ethtool v5.10.
> > > 
> > > Fixes: 7be92514b99c ("ethtool: check if there is at least one channel for TX/RX in the core")
> > > Signed-off-by: Yinjun Zhang <yinjun.zhang@...igine.com>
> > > Signed-off-by: Simon Horman <simon.horman@...ronome.com>
> > > Signed-off-by: Louis Peens <louis.peens@...ronome.com>  
> > 
> > Reviewed-by: Michal Kubecek <mkubecek@...e.cz>
> 
> IOW you prefer this to what I proposed?

No, that was my misunderstanding, please see my reply to your e-mail.

Michal