> -----Original Message-----
> From: Intel-wired-lan <[email protected]> On Behalf
> Of Kohei Enju
> Sent: Thursday, March 19, 2026 6:17 PM
> To: [email protected]; [email protected]
> Cc: Nguyen, Anthony L <[email protected]>; Kitszel,
> Przemyslaw <[email protected]>; Andrew Lunn
> <[email protected]>; David S. Miller <[email protected]>; Eric
> Dumazet <[email protected]>; Jakub Kicinski <[email protected]>; Paolo
> Abeni <[email protected]>; [email protected]; Kohei Enju
> <[email protected]>
> Subject: [Intel-wired-lan] [PATCH iwl-next v1 3/3] i40e: add support
> for bpf_xdp_metadata_rx_vlan_tag()
>
> Introduce i40e_xdp_rx_vlan_tag() which takes the same approach as
> i40e_process_skb_fields() to extract the VLAN tag from the RX
> descriptor.
>
> Tested with X710 adapter using xdp_hw_metadata, and confirmed that
> VLAN tags match between bpf_xdp_metadata_rx_vlan_tag() and
> skb->vlan_proto/vlan_tci.
>
> Signed-off-by: Kohei Enju <[email protected]>
> ---
> drivers/net/ethernet/intel/i40e/i40e_main.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c
> b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index 6b7e34b16a8d..3749f32ef95a 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -13610,8 +13610,27 @@ static int i40e_xdp_rx_hash(const struct
> xdp_md *_ctx, u32 *hash,
> return 0;
> }
>
> +static int i40e_xdp_rx_vlan_tag(const struct xdp_md *_ctx, __be16
> *vlan_proto,
> + u16 *vlan_tci)
> +{
> + const struct i40e_xdp_buff *ctx = (const void *)_ctx;
> + const union i40e_rx_desc *desc = ctx->desc;
> + u64 status;
> +
> + status = le64_to_cpu(desc->wb.qword1.status_error_len);
> +
> + if (!(status & BIT(I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)))
> + return -ENODATA;
> +
> + *vlan_proto = cpu_to_be16(ETH_P_8021Q);
> + *vlan_tci = le16_to_cpu(desc->wb.qword0.lo_dword.l2tag1);
> +
> + return 0;
> +}
> +
> static const struct xdp_metadata_ops i40e_xdp_metadata_ops = {
> .xmo_rx_hash = i40e_xdp_rx_hash,
> + .xmo_rx_vlan_tag = i40e_xdp_rx_vlan_tag,
> };
>
> static const struct net_device_ops i40e_netdev_ops = {
> --
> 2.51.0
Reviewed-by: Aleksandr Loktionov <[email protected]>
