On 03/10/2017 04:19 PM, Pavel Belous wrote:
>
>
> On 10.03.2017 17:47, David Arcari wrote:
>> Hi,
>>
>> On 03/09/2017 05:43 PM, Lino Sanfilippo wrote:
>>> Hi,
>>>
>>> On 09.03.2017 22:03, David Arcari wrote:
>>>> When the aquantia device mtu is changed the net_device structure is not
>>>> updated. As a result the ip command does not properly reflect the mtu
>>>> change.
>>>>
>>>> Commit 5513e16421cb incorrectly assumed that __dev_set_mtu() was making the
>>>> assignment ndev->mtu = new_mtu; This is not true in the case where the
>>>> driver
>>>> has a ndo_change_mtu routine.
>>>>
>>>> Fixes: 5513e16421cb ("net: ethernet: aquantia: Fixes for
>>>> aq_ndev_change_mtu")
>>>>
>>>> v2: no longer close/open net-device after mtu change
>>>>
>>>> Cc: Pavel Belous <[email protected]>
>>>> Signed-off-by: David Arcari <[email protected]>
>>>> ---
>>>> drivers/net/ethernet/aquantia/atlantic/aq_main.c | 10 ++--------
>>>> 1 file changed, 2 insertions(+), 8 deletions(-)
>>>>
>>>> diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c
>>>> b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
>>>> index dad6362..bba5ebd 100644
>>>> --- a/drivers/net/ethernet/aquantia/atlantic/aq_main.c
>>>> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
>>>> @@ -96,15 +96,9 @@ static int aq_ndev_change_mtu(struct net_device *ndev,
>>>> int new_mtu)
>>>> struct aq_nic_s *aq_nic = netdev_priv(ndev);
>>>> int err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
>>>>
>>>> - if (err < 0)
>>>> - goto err_exit;
>>>> + if (!err)
>>>> + ndev->mtu = new_mtu;
>>>>
>>>> - if (netif_running(ndev)) {
>>>> - aq_ndev_close(ndev);
>>>> - aq_ndev_open(ndev);
>>>> - }
>>>> -
>>>> -err_exit:
>>>
>>> Removing the restart has nothing to do with the bug you want to fix here,
>>> has
>>> it?
>>> I suggest to send a separate patch for this.
>>>
>>> Regards,
>>> Lino
>>>
>>
>> I'm fine with that. Pavel does that work for you?
>>
>> It would mean that the original version of this patch should be applied and
>> either you or I could send the follow-up patch.
>>
>> Best,
>>
>> -Dave
>>
>
> David,
>
> Yes, I think for this it is better to make separate patch.
> I can prepare a patch for "close/open netdev" myself.
>
> Probably you need send the original version of this patch as "v3" (I'm no sure
> what it is possible to discard v2 and apply v1 instead.)
>
> Thank you,
> Pavel
Please drop v2 of this patch. We would like to have v1 applied.
Thanks,
-Dave
