[dpdk-dev] [PATCH] net/mlx5: fix TSO header size in case of VLAN insertion

[Nélio Laranjeiro]

On Thu, Mar 23, 2017 at 02:42:11PM +0200, Shahaf Shuler wrote:
> When VLAN insertion is requested the vlan size must be added to the
> calculation of the TSO header size, as it is not embedded within the
> mbuf l2 length.
> 
> Fixes: 98083fd482a2 ("net/mlx5: add hardware TSO support")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_rxtx.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
> index 823aac8..9e8c6d0 100644
> --- a/drivers/net/mlx5/mlx5_rxtx.c
> +++ b/drivers/net/mlx5/mlx5_rxtx.c
> @@ -548,10 +548,11 @@
>  							buf->ol_flags &
>  							(PKT_TX_TUNNEL_GRE |
>  							 PKT_TX_TUNNEL_VXLAN);
> +				uint8_t vlan_sz = (buf->ol_flags &
> +						  PKT_TX_VLAN_PKT) ? 4 : 0;
>  
> -				tso_header_sz = buf->l2_len + buf->l3_len +
> -						buf->l4_len;
> -
> +				tso_header_sz = buf->l2_len + vlan_sz +
> +						buf->l3_len + buf->l4_len;
>  				if (is_tunneled	&& txq->tunnel_en) {
>  					tso_header_sz += buf->outer_l2_len +
>  							 buf->outer_l3_len;
> -- 
> 1.8.3.1
> 

Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>

-- 
Nélio Laranjeiro
6WIND