After several week tests, your advice still make this bug appear. But
my patch make this bug disappear.
Zhu Yanjun
On Thu, Nov 17, 2016 at 5:33 PM, zhuyj <zyjzyj2...@gmail.com> wrote:
> Sure. From the following.
> "
> VLAN Filter. Each bit ‘i’ in register ‘n’ affects packets with VLAN
> tags equal to 32*n+i.
> 128 VLAN Filter registers compose a table of 4096 bits that cover all
> possible VLAN
> tags.
> Each bit when set, enables packets with the associated VLAN tags to
> pass. Each bit
> when cleared, blocks packets with this VLAN tag.
> "
> Your suggestions seems reasonable. Please wait. I will make tests to
> vefiry your suggestions.
>
> I will keep you update.
>
> On Wed, Nov 16, 2016 at 10:05 PM, Lino Sanfilippo <linosanfili...@gmx.de>
> wrote:
>>
>>
>> Hi,
>>
>>>
>>> Sometimes vfta registers can not be written successfully in dcb mode.
>>> This is very occassional. When the ixgbe nic runs for a very long time,
>>> sometimes this bug occurs. But after IXGBE_WRITE_FLUSH is executed,
>>> this bug never occurs.
>>>
>>> Signed-off-by: Zhu Yanjun <zyjzyj2...@gmail.com>
>>> ---
>>> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 ++++-
>>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>>> b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>>> index bd93d82..1221cfb 100644
>>> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>>> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
>>> @@ -4138,8 +4138,10 @@ static void ixgbe_vlan_promisc_enable(struct
>>> ixgbe_adapter *adapter)
>>> }
>>>
>>> /* Set all bits in the VLAN filter table array */
>>> - for (i = hw->mac.vft_size; i--;)
>>> + for (i = hw->mac.vft_size; i--;) {
>>> IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U);
>>> + IXGBE_WRITE_FLUSH(hw);
>>> + }
>>
>> Should it not be sufficient to do the flush only once, at the end of the
>> function?
>>
>> Regards,
>> Lino
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