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Date: Fri, 27 Oct 2017 06:05:35 -0700 (PDT)
From: Iain Barker <iain.barker@oracle.com>
Sender: Iain Barker <iain.barker@oracle.com>
To: "Xing, Beilei" <beilei.xing@intel.com>, users@dpdk.org
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Subject: Re: [dpdk-users] VLAN tags always stripped on i40evf [VMware SR-IOV]
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Original message from Iain Barker:
>
> --- drivers/net/i40e/i40e_rxtx.c.orig      2016-11-30 04:28:48.000000000 =
-0500
> +++ drivers/net/i40e/i40e_rxtx.c   2017-10-10 15:07:10.851398087 -0400
> @@ -93,6 +93,8 @@
>                         rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1)=
;
>                 PMD_RX_LOG(DEBUG, "Descriptor l2tag1: %u",
>                            rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2ta=
g1));
> +               // vlan got stripped. Re-inject vlan from tci
> +               rte_vlan_insert(&mb);
>         } else {
>                 mb->vlan_tci =3D 0;
>         }
>=20

From: Xing, Beilei [mailto:beilei.xing@intel.com] :
>
>NACK this patch as it will impact performance.
>
>VLAN strip is supported by latest i40e kernel driver, it works well in ker=
nel PF +
>DPDK VF mode with i40e kernel driver 2.1.26 and DPDK 17.08. Please refer t=
o
>Latest kernel driver.
>
>Beilei


Thanks Beilei.

I wasn't proposing to submit the patch.  I was just using it as a demonstra=
tion of the problem.
i.e. that the TCI has the required data, but it was stripped before the fra=
me arrives at the app.

This is not Linux kernel as the host for PF, it is VMware ESXi. =20
The latest Intel PF driver I see for i40e is version 2.0.6.   Will that wor=
k?