I found the source of the IPV4_EX.  I think it's from e1000 82575
header, which contains IPv4_EX.  However, it's not related to
extension header, it means IPv4 header w/ IP options; while RSS never
takes any bits from IP optons.  And these macros in e1000 82575 header
are actually _not_ RSS related.

On Sat, Sep 2, 2017 at 6:11 PM, Robert N. M. Watson <rwat...@freebsd.org> wrote:
> My recollection here is (quite) hazy, as it's been a while, but it's likely
> that this was a transcription error. The set of hash types was largely
> modelled on what Chelsio offered in the T3 (if I recall), and also what was
> documented in the Microsoft RSS white paper, so it may be worth taking a
> look at those sources to see if something makes itself obvious.
>
> (There do seem to be some odd variations in hashing types supported by
> various NICs -- e.g., hashing but with different hash algorithms in certain
> generations of cards, etc, so it also wouldn't surprise me if it did
> correspond to something real. Clearly the comment is not good enough to
> explain that, if so!)
>
> Robert
>
> On 2 Sep 2017, at 00:43, Adrian Chadd <adr...@freebsd.org> wrote:
>
> Hi,
>
> I seem to recall it was something some chipsets supported? I forget the
> details.
>
>
>
> -adrian
>
>
> On 30 August 2017 at 00:07, Sepherosa Ziehau <sepher...@gmail.com> wrote:
>>
>> IPv4 UDP with extended headers o_O?  Or it was just a mistake.
>>
>> Thanks,
>> sephe
>>
>> --
>> Tomorrow Will Never Die
>
>
>



-- 
Tomorrow Will Never Die
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