linux-kernel - Re: [PATCH V2 net-next 4/7] net: hns3: fix port setting handle for fibre port

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Date:   Thu, 12 Sep 2019 08:56:07 +0800
From:   tanhuazhong <tanhuazhong@...wei.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <linuxarm@...wei.com>, <jakub.kicinski@...ronome.com>
Subject: Re: [PATCH V2 net-next 4/7] net: hns3: fix port setting handle for
 fibre port



On 2019/9/11 18:16, Sergei Shtylyov wrote:
> Hello!
> 
> On 11.09.2019 5:40, Huazhong Tan wrote:
> 
>> From: Guangbin Huang <huangguangbin2@...wei.com>
>>
>> For hardware doesn't support use specified speed and duplex
> 
>     Can't pasre that. "For hardware that does not support using", perhaps?

Yes, thanks. Will check the grammar more carefully next time.

> 
>> to negotiate, it's unnecessary to check and modify the port
>> speed and duplex for fibre port when autoneg is on.
>>
>> Fixes: 22f48e24a23d ("net: hns3: add autoneg and change speed support 
>> for fibre port")
>> Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
>> Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
>> ---
>>   drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 15 +++++++++++++++
>>   1 file changed, 15 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c 
>> b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
>> index f5a681d..680c350 100644
>> --- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
>> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
>> @@ -726,6 +726,12 @@ static int hns3_check_ksettings_param(const 
>> struct net_device *netdev,
>>       u8 duplex;
>>       int ret;
>> +    /* hw doesn't support use specified speed and duplex to negotiate,
> 
>     I can't parse that, did you mean "using"?

yes, thanks.

> 
>> +     * unnecessary to check them when autoneg on.
>> +     */
>> +    if (cmd->base.autoneg)
>> +        return 0;
>> +
>>       if (ops->get_ksettings_an_result) {
>>           ops->get_ksettings_an_result(handle, &autoneg, &speed, 
>> &duplex);
>>           if (cmd->base.autoneg == autoneg && cmd->base.speed == speed &&
>> @@ -787,6 +793,15 @@ static int hns3_set_link_ksettings(struct 
>> net_device *netdev,
>>               return ret;
>>       }
>> +    /* hw doesn't support use specified speed and duplex to negotiate,
> 
>     Here too...
> 


yes, thanks.

>> +     * ignore them when autoneg on.
>> +     */
>> +    if (cmd->base.autoneg) {
>> +        netdev_info(netdev,
>> +                "autoneg is on, ignore the speed and duplex\n");
>> +        return 0;
>> +    }
>> +
>>       if (ops->cfg_mac_speed_dup_h)
>>           ret = ops->cfg_mac_speed_dup_h(handle, cmd->base.speed,
>>                              cmd->base.duplex);
> 
> MBR, Sergei
> 
> .
>