From: David Howells <dhowe...@redhat.com>
Date: Wed, 03 Oct 2018 21:19:40 +0100
> David Miller <da...@davemloft.net> wrote:
>
>> Probably you are seeing some interrupt mitigation.
>>
>> It seems there is a difference in how the interrupt mitigation is
>> programmed on for 8168 chips vs. others by default. Most get
>> all zeros in the IntrMitigate register, whilst for 8168 chips
>> a value of 0x5151 is programmed.
>
> I'm not sure what that means. I can't seem to find a programmer's manual for
> the chip.
There is a comment which documents what might be the register layout
elsewhere in the driver:
/*
* Undocumented corner. Supposedly:
* (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
*/
RTL_W16(tp, IntrMitigate, 0x0000);
