On Mon, Mar 25, 2019 at 2:28 PM Stephen Hemminger <
step...@networkplumber.org> wrote:
> From: Stephen Hemminger <sthem...@microsoft.com>
>
> The bnxt driver is not correctly setting the receive VLAN offload
> flags. When VLAN is offloaded the driver must set the PKT_RX_VLAN_STRIPPED
> flag.
>
> Actually, several drivers have the same bug, only most of the
> Intel drivers look right. Any driver that sets vlan_tci is probably
> stripping the tag, and should be setting RX_VLAN_STRIPPED.
>
> To quote rte_mbuf.h:
>
> /**
> * The RX packet is a 802.1q VLAN packet, and the tci has been
> * saved in in mbuf->vlan_tci.
> * If the flag PKT_RX_VLAN_STRIPPED is also present, the VLAN
> * header has been stripped from mbuf data, else it is still
> * present.
> */
>
> Fixes: 2eb53b134aae ("net/bnxt: add initial Rx code")
> Signed-off-by: Stephen Hemminger <sthem...@microsoft.com>
>
Acked-by: Ajit Khaparde <ajit.khapa...@broadcom.com>
> ---
> drivers/net/bnxt/bnxt_rxr.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
> index 1bfc63d9304c..dc695e17771b 100644
> --- a/drivers/net/bnxt/bnxt_rxr.c
> +++ b/drivers/net/bnxt/bnxt_rxr.c
> @@ -154,7 +154,7 @@ static void bnxt_tpa_start(struct bnxt_rx_queue *rxq,
> if (tpa_start1->flags2 &
> rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN)) {
> mbuf->vlan_tci = rte_le_to_cpu_32(tpa_start1->metadata);
> - mbuf->ol_flags |= PKT_RX_VLAN;
> + mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
> }
> if (likely(tpa_start1->flags2 &
> rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC)))
> @@ -437,7 +437,7 @@ static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
> (RX_PKT_CMPL_METADATA_VID_MASK |
> RX_PKT_CMPL_METADATA_DE |
> RX_PKT_CMPL_METADATA_PRI_MASK);
> - mbuf->ol_flags |= PKT_RX_VLAN;
> + mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
> }
>
> if (likely(RX_CMP_IP_CS_OK(rxcmp1)))
> --
> 2.17.1
>
>
