linux-kernel - Re: [PATCH net-next 3/6] net: phy: update in-band AN mode when changing interface by PHY driver

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Message-ID: <260499f9-4746-d06b-4fac-a01f29365704@linux.intel.com>
Date:   Fri, 23 Jun 2023 13:57:05 +0800
From:   Choong Yong Liang <yong.liang.choong@...ux.intel.com>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
        David E Box <david.e.box@...el.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Marek Behún <kabel@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Wong Vee Khee <veekhee@...le.com>,
        Jon Hunter <jonathanh@...dia.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Revanth Kumar Uppala <ruppala@...dia.com>,
        Shenwei Wang <shenwei.wang@....com>,
        Andrey Konovalov <andrey.konovalov@...aro.org>,
        Jochen Henneberg <jh@...neberg-systemdesign.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        platform-driver-x86@...r.kernel.org, linux-hwmon@...r.kernel.org,
        bpf@...r.kernel.org, Voon Wei Feng <weifeng.voon@...el.com>,
        Tee Min <tee.min.tan@...ux.intel.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
        Lai Peter Jun Ann <jun.ann.lai@...el.com>
Subject: Re: [PATCH net-next 3/6] net: phy: update in-band AN mode when
 changing interface by PHY driver

Hi Simon,

I will update it in v2. Thank you.

On 22/6/2023 10:43 pm, Simon Horman wrote:
> On Thu, Jun 22, 2023 at 12:19:02PM +0800, Choong Yong Liang wrote:
>> From: "Tan, Tee Min" <tee.min.tan@...ux.intel.com>
>>
>> Add cur_link_an_mode into phy_device struct for PHY drivers to
>> communicate the in-band AN mode setting with phylink framework.
>>
>> As there is a mechanism in PHY drivers to switch the PHY interface
>> between SGMII and 2500BaseX according to link speed. In this case,
>> the in-band AN mode should be switching based on the PHY interface
>> as well, if the PHY interface has been changed/updated by PHY driver.
>>
>> For e.g., disable in-band AN in 2500BaseX mode, or enable in-band AN
>> back for SGMII mode (10/100/1000Mbps).
>>
>> Signed-off-by: Tan, Tee Min <tee.min.tan@...ux.intel.com>
>> Signed-off-by: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
> 
> ...
> 
>> diff --git a/include/linux/phy.h b/include/linux/phy.h
>> index 11c1e91563d4..c685b526e307 100644
>> --- a/include/linux/phy.h
>> +++ b/include/linux/phy.h
>> @@ -756,6 +756,8 @@ struct phy_device {
>>   	/* MACsec management functions */
>>   	const struct macsec_ops *macsec_ops;
>>   #endif
>> +	/* For communicate the AN mode setting with phylink framework. */
>> +	u8 cur_link_an_mode;
>>   };
> 
> Hi Choong Yong Liang,
> 
> Please consider adding cur_link_an_mode to the kernel doc
> for struct phy_device - which is above the definition of struct phy_device.