netdev - Re: [PATCH net-next v11 2/4] ethtool: provide customized dim profile management

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Message-ID: <1714576307.2126026-2-hengqi@linux.alibaba.com>
Date: Wed, 1 May 2024 23:11:47 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: kernel test robot <lkp@...el.com>,
 oe-kbuild-all@...ts.linux.dev,
 "David  S . Miller" <davem@...emloft.net>,
 Paolo Abeni <pabeni@...hat.com>,
 Eric  Dumazet <edumazet@...gle.com>,
 Jason Wang <jasowang@...hat.com>,
 "Michael S  . Tsirkin" <mst@...hat.com>,
 Brett Creeley <bcreeley@....com>,
 Ratheesh  Kannoth <rkannoth@...vell.com>,
 Alexander Lobakin <aleksander.lobakin@...el.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
 Tal  Gilboa <talgi@...dia.com>,
 Jonathan Corbet <corbet@....net>,
 linux-doc@...r.kernel.org,
 Maxime Chevallier <maxime.chevallier@...tlin.com>,
 Jiri Pirko <jiri@...nulli.us>,
 Paul  Greenwalt <paul.greenwalt@...el.com>,
 Ahmed Zaki <ahmed.zaki@...el.com>,
 Vladimir Oltean <vladimir.oltean@....com>,
 Kory Maincent <kory.maincent@...tlin.com>,
 Andrew Lunn <andrew@...n.ch>,
 justinstitt@...gle.com,
 netdev@...r.kernel.org,
 virtualization@...ts.linux.dev
Subject: Re: [PATCH net-next v11 2/4] ethtool: provide customized dim profile management

On Wed, 1 May 2024 07:44:20 -0700, Jakub Kicinski <kuba@...nel.org> wrote:
> On Wed, 1 May 2024 12:45:36 +0800 Heng Qi wrote:
> > >    net/ethtool/coalesce.c: At top level:  
> >  [...]  
> > >      446 | static int ethnl_update_profile(struct net_device *dev,
> > >          |            ^~~~~~~~~~~~~~~~~~~~  
> >  [...]  
> > >      151 | static int coalesce_put_profile(struct sk_buff *skb, u16 attr_type,
> > >          |            ^~~~~~~~~~~~~~~~~~~~
> > >   
> > 
> > This is a known minor issue, to reduce the use of 'IS_ENABLED(CONFIG_DIMLIB)'
> > mentioned in v10. Since the calls of ethnl_update_profile() and
> > coalesce_put_profile() will only occur when IS_ENABLED(CONFIG_DIMLIB) returns
> > true, the robot's warning can be ignored the code is safe.
> > 
> > All NIPA test cases running on my local pass successfully on V11.
> > 
> > Alternatively, I remake the series to have IS_ENABLED(CONFIG_DIMLIB) back,
> > up to Kuba (and others). :)
> 
> You should remove the ifdef around the member in struct net_device.
> It's too much code complication to save one pointer in the struct.

Makes sense.

Thanks.