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SubjectRe: [RFC PATCH net-next v2 6/7] net: ravb: Enable SW IRQ Coalescing for GbEth
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On 12/02/2024 20:40, Sergey Shtylyov wrote:
> On 2/12/24 2:45 PM, Paul Barker wrote:
> [...]
>>>> diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
>>>> index 55a7a08aabef..ca7a66759e35 100644
>>>> --- a/drivers/net/ethernet/renesas/ravb.h
>>>> +++ b/drivers/net/ethernet/renesas/ravb.h
>>>> @@ -1078,6 +1078,7 @@ struct ravb_hw_info {
>>>> unsigned nc_queues:1; /* AVB-DMAC has RX and TX NC queues */
>>>> unsigned magic_pkt:1; /* E-MAC supports magic packet detection */
>>>> unsigned half_duplex:1; /* E-MAC supports half duplex mode */
>>>> + unsigned needs_irq_coalesce:1; /* Requires SW IRQ Coalescing to achieve best performance */
>>>
>>> Is this really a hardware feature?
>>
>> It's more like a requirement to get the best out of this hardware and the Linux networking stack.
>>
>> I considered checking the compatible string in the probe function but I decided that storing a configuration bit in the HW info struct was cleaner.
>
> Yes, but you added the new bit under the "hardware features" commet. :-)
>
>>> Also, s/Requires SW/Needs software/ and s/to achieve best performance//,
>>> please...
>>
>> Will do.
>
> The comment is too long, I think. :-)

I'll fix both in the next revision.

--
Paul Barker
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