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From: "Richardson, Bruce" <bruce.richardson@intel.com>
To: Surya Nimmagadda <nscsekhar@juniper.net>, "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: [dpdk-dev] RSS for double vlan tagged packets
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Date: Tue, 13 May 2014 08:09:24 +0000
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Subject: Re: [dpdk-dev] RSS for double vlan tagged packets
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I don't think the hardware supports using RSS on packets with a double VLAN=
 tag.=20

Regards,
/Bruce

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Surya Nimmagadda
> Sent: Tuesday, May 13, 2014 3:17 AM
> To: dev@dpdk.org
> Subject: Re: [dpdk-dev] RSS for double vlan tagged packets
>=20
> I have also tried by enabling vlan_extended support in port_conf and set =
rss_hf
> as all 1s.
>=20
> .hw_vlan_extend =3D 1
> .rss_hf =3D ~0
>=20
> Still there is no change...
>=20
> Surya
>=20
> On May 12, 2014, at 12:38 PM, Surya Nimmagadda <nscsekhar@juniper.net>
> wrote:
>=20
> > Hi,
> >
> > I am using RSS functionality on 82599 with dpdk igb_uio driver.
> >
> > I am able to get proper hash for untagged and single tagged packets. Bu=
t for
> double tagged packets, it is not working. I get hash value 0 for all pack=
ets.
> >
> > Is there any additional flag I need to enable for this?
> >
> > Regards,
> > Surya