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From: Padam Jeet Singh <padam.singh@inventum.net>
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Date: Mon, 11 Jul 2016 15:54:28 +0530
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Subject: [dpdk-dev] I211, Double VLAN tags and VLAN Stripping not working
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Hello,

I am using the development branch of DPDK and am trying out double =
tagging using the DPDK PMD E1000 driver.

=46rom a code perspective, I have the following:

In rte_eth_conf.rxmode:=20
hw_vlan_extend =3D 1, =20
hw_vlan_strip =3D 1,

In the port setup code :=20
	called rte_eth_dev_set_vlan_ether_type(port_id, =
ETH_VLAN_TYPE_OUTER, 0x88a8);

However, the MBUF received still comes with ether type 0x88a8 with both =
mbuf->vlan_tci and mbuf->vlan_tci_outer set to zero. Basically the VLAN =
stripping is not taking place. When I do a code search for =
vlan_tci_outer, it seems only the Intel i40 and one another actually =
populate these fields.

I am not sure if this is I211 Ethernet controller limitation or DPDK =
driver limitation.

Any pointers on how can I get VLAN stripping enabled for E1000 PMD for =
both inner and outer VLANs? The single VLAN stripping case works fine in =
same code.

Thanks,
Padam=