[PATCH 0/3] Support IPv6 flow label based RSS

[Ajit Khaparde]

On Thu, Feb 8, 2024 at 10:47 AM Ferruh Yigit <ferruh.yigit at amd.com> wrote:
>
> On 2/8/2024 5:43 AM, Ajit Khaparde wrote:
> > The use of 5-tuple of the source address, destination address,
> > source port, destination port, and the transport protocol type
> > may not be possible due to IP fragmentation, encryption, or
> > inability to parse past IPv6 extensions headers.
> >
> > Flow label values can be chosen such that they can be
> > used as part of the input to a hash function used in a load
> > distribution scheme.
> >
> > On supporting hardware, the 20-bit Flow Label field in the
> > IPv6 header can be used to perform RSS in the ingress path.
> >
> > Please apply.
> >
>
> Hi Ajit,
>
Thanks Ferruh.

> First two patch looks OK but can you please combine them into single patch?
Sure. Can do.

>
> There are two ways for RSS, config APIs and rte_flow based support,
> testpmd patch only adds flow based support, I don't know if old method
> support is required, but if you want to add you can check following sample:
> 'Commit 46914aa1c793 ("ethdev: add eCPRI RSS offload type")'
Ok. Let me check.

>
>
> Third patch, bnxt one, doesn't apply. It looks like it is on top of
> different source code, if you prefer you can make it another patch and
> get your tree.
Yes. That's right. I had used the brcm-next-net for that and wanted
to have a driver patch to show usability of the code.

I think in v2, I will just send the ethdev + testpmd patch
and add the driver patch in the PMD list/tree for cherry-pick.

Thanks
Ajit

>
>
> > Example to configure IPv6 flow label based RSS:
> >
> > flow create 0 ingress pattern eth / ipv6 / tcp / end actions rss types ipv6-flow-label end / end
> >
> > Ajit Khaparde (3):
> >   ethdev: add support for RSS based on IPv6 flow label
> >   app/testpmd: add IPv6 flow label to RSS types
> >   net/bnxt: add IPv6 flow label based RSS support
> >
> >  app/test-pmd/config.c          | 1 +
> >  drivers/net/bnxt/bnxt.h        | 1 +
> >  drivers/net/bnxt/bnxt_ethdev.c | 2 ++
> >  drivers/net/bnxt/bnxt_hwrm.c   | 7 +++++++
> >  drivers/net/bnxt/bnxt_vnic.c   | 9 +++++++--
> >  lib/ethdev/rte_ethdev.h        | 1 +
> >  6 files changed, 19 insertions(+), 2 deletions(-)
> >
>
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