linux-kernel - Re: [PATCH net-next] net-next/hinic: Fix MTU limitation

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Date:   Thu, 24 Aug 2017 19:41:21 +0300
From:   Aviad Krawczyk <aviad.krawczyk@...wei.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     <davem@...emloft.net>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>, <zhaochen6@...wei.com>
Subject: Re: [PATCH net-next] net-next/hinic: Fix MTU limitation

On 8/24/2017 6:19 PM, Andrew Lunn wrote:
> On Thu, Aug 24, 2017 at 09:21:25PM +0800, Aviad Krawczyk wrote:
>> Fix the hw MTU limitation by setting min/max_mtu
>>
>> Signed-off-by: Aviad Krawczyk <aviad.krawczyk@...wei.com>
>> Signed-off-by: Zhao Chen <zhaochen6@...wei.com>
>> ---
>>  drivers/net/ethernet/huawei/hinic/hinic_main.c | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
>> index ae7ad48..7a14963 100644
>> --- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
>> +++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
>> @@ -980,6 +980,9 @@ static int nic_dev_init(struct pci_dev *pdev)
>>  	hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
>>  				nic_dev, link_status_event_handler);
>>  
>> +	netdev->min_mtu = ETH_MIN_MTU;
> 
> You don't need to set the min_mtu. See:
> 
> http://elixir.free-electrons.com/linux/latest/source/net/ethernet/eth.c#L354
> 
> 	Andrew
> 
> .
> 

Thanks for paying attention to this unuseful line, I don't need to set min mtu.
I added it by mistake, the target was to change the MTU limitation.
I will send the patch soon without this line(in few days, after we will test it)