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Date:   Tue, 10 May 2022 13:01:06 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     "Martinez, Ricardo" <ricardo.martinez@linux.intel.com>
Cc:     Jakub Kicinski <kuba@kernel.org>,
        Sergey Ryazanov <ryazanov.s.a@gmail.com>,
        netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
        David Miller <davem@davemloft.net>,
        Johannes Berg <johannes@sipsolutions.net>,
        Loic Poulain <loic.poulain@linaro.org>,
        M Chetan Kumar <m.chetan.kumar@intel.com>,
        "Devegowda, Chandrashekar" <chandrashekar.devegowda@intel.com>,
        Intel Corporation <linuxwwan@intel.com>,
        chiranjeevi.rapolu@linux.intel.com,
        Haijun Liu =?utf-8?B?KCDliJjmtbflhpsp?= 
        <haijun.liu@mediatek.com>,
        "Hanania, Amir" <amir.hanania@intel.com>,
        "Sharma, Dinesh" <dinesh.sharma@intel.com>,
        "Lee, Eliot" <eliot.lee@intel.com>,
        "Jarvinen, Ilpo Johannes" <ilpo.johannes.jarvinen@intel.com>,
        "Veleta, Moises" <moises.veleta@intel.com>,
        "Bossart, Pierre-louis" <pierre-louis.bossart@intel.com>,
        "Sethuraman, Muralidharan" <muralidharan.sethuraman@intel.com>,
        "Mishra, Soumya Prakash" <Soumya.Prakash.Mishra@intel.com>,
        "Kancharla, Sreehari" <sreehari.kancharla@intel.com>,
        "Sahu, Madhusmita" <madhusmita.sahu@intel.com>
Subject: Re: [PATCH net-next v8 02/14] net: skb: introduce
 skb_data_area_size()
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References: <20220506181310.2183829-1-ricardo.martinez@linux.intel.com>
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 <CAHNKnsSZ-Sf=5f3puLUiRRysz80b2CS3tVMXds_Ugur-Dga2aQ@mail.gmail.com>
 <20220509125008.6d1c3b9b@kernel.org>
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On Mon, May 09, 2022 at 02:37:26PM -0700, Martinez, Ricardo wrote:
> On 5/9/2022 12:50 PM, Jakub Kicinski wrote:
> > On Mon, 9 May 2022 21:34:58 +0300 Sergey Ryazanov wrote:

...

> > We have two cases:
> >   - for Tx - drivers should use skb_headlen();
> >   - for Rx - I presume we are either dealing with fresh or correctly
> >     reset skbs, so we can use skb_tailroom().
> Thanks for the information, looks like indeed we can avoid the helper in
> t7xx driver by following those guidelines.

I think this can be done as a follow up patch.

-- 
With Best Regards,
Andy Shevchenko