On Thu, Sep 03, 2026 at 03:37:25PM +0100, Bruce Richardson wrote:
> The outer VLAN TPID setting for Tx was cached in the driver but was not
> properly pushed to hardware (via PF) when changed. Add the necessary
> push call to the update function.
>
> Fixes: 8599d7604e0a ("net/iavf: support QinQ strip")
> Fixes: 7ce1363b424f ("net/iavf: support QinQ insertion")
> Cc: [email protected]
>
> Signed-off-by: Bruce Richardson <[email protected]>
> ---
> drivers/net/intel/iavf/iavf_ethdev.c | 15 +++++++++++----
> 1 file changed, 11 insertions(+), 4 deletions(-)
>
Adding ack from v1:
Acked-by: Ciara Loftus <[email protected]>
> diff --git a/drivers/net/intel/iavf/iavf_ethdev.c
> b/drivers/net/intel/iavf/iavf_ethdev.c
> index c4a6763f28..2ac4dbdac4 100644
> --- a/drivers/net/intel/iavf/iavf_ethdev.c
> +++ b/drivers/net/intel/iavf/iavf_ethdev.c
> @@ -1461,13 +1461,20 @@ iavf_vlan_tpid_set(struct rte_eth_dev *dev, enum
> rte_vlan_type vlan_type, uint16
> return -ENOTSUP;
> }
>
> - /* This API only fills internal iavf_adapter structure
> - * and does not send any signal to hardware.
> - * Inner VLAN always 0x8100, so not set explicitly.
> - */
> + /* Inner VLAN always 0x8100, so not set explicitly. */
> if (qinq && vlan_type == RTE_ETH_VLAN_TYPE_OUTER)
> adapter->tpid = tpid; /* Outer VLAN can be 0x88a8 or 0x8100 */
>
> + /* Re-push insertion, and stripping if already enabled, so the new
> + * outer TPID reaches the PF instead of only being cached here.
> + */
> + iavf_dev_vlan_insert_set(dev);
> + if (dev_conf->rxmode.offloads & RTE_ETH_RX_OFFLOAD_QINQ_STRIP) {
> + int ret = iavf_dev_vlan_offload_set(dev,
> RTE_ETH_QINQ_STRIP_MASK);
> + if (ret != 0)
> + return ret;
> + }
> +
> return 0;
> }
>
> --
> 2.53.0
>
