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From: "Robert N. M. Watson" <rwatson@FreeBSD.org>
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Subject: Re: RSS_UDP_IPV4_EX?
Date: Sat, 2 Sep 2017 11:11:24 +0100
In-Reply-To: <CAJ-Vmok5JePWFc-y9YhnjKptuw49wy-dw2kj_8Mk1Jnfb=VG7g@mail.gmail.com>
Cc: Sepherosa Ziehau <sepherosa@gmail.com>,
 "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
To: Adrian Chadd <adrian@freebsd.org>
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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 <adrian@freebsd.org> wrote:
>=20
> Hi,
>=20
> I seem to recall it was something some chipsets supported? I forget =
the details.
>=20
>=20
>=20
> -adrian
>=20
>=20
> On 30 August 2017 at 00:07, Sepherosa Ziehau <sepherosa@gmail.com =
<mailto:sepherosa@gmail.com>> wrote:
> IPv4 UDP with extended headers o_O?  Or it was just a mistake.
>=20
> Thanks,
> sephe
>=20
> --
> Tomorrow Will Never Die
>=20