On Wed, 18 Nov 2015 16:50:09 +0800
Shaopeng He <shaopeng.he at intel.com> wrote:
> VLAN value should be copied from RX descriptor to mbuf,
> this patch fixes this issue.
>
> Signed-off-by: Shaopeng He <shaopeng.he at intel.com>
> ---
> drivers/net/fm10k/fm10k_rxtx.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
> index 1bac28d..eeb635e 100644
> --- a/drivers/net/fm10k/fm10k_rxtx.c
> +++ b/drivers/net/fm10k/fm10k_rxtx.c
> @@ -146,6 +146,7 @@ fm10k_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
> #endif
>
> mbuf->hash.rss = desc.d.rss;
> + mbuf->vlan_tci = desc.w.vlan & FM10K_RXD_VLAN_ID_MASK;
>
> rx_pkts[count] = mbuf;
> if (++next_dd == q->nb_desc) {
> @@ -292,6 +293,7 @@ fm10k_recv_scattered_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts,
> rx_desc_to_ol_flags(first_seg, &desc);
> #endif
> first_seg->hash.rss = desc.d.rss;
> + first_seg->vlan_tci = desc.w.vlan & FM10K_RXD_VLAN_ID_MASK;
>
> /* Prefetch data of first segment, if configured to do so. */
> rte_packet_prefetch((char *)first_seg->buf_addr +
Good catch, this bug means VLAN's would not work right now.
But I think it isn't quite right.
By masking the VLAN you are losing the received priority bits.
Other drivers like ixgbe preserve the priority bits.
