Re: [dpdk-stable] [PATCH] net/mlx5: fix ConnectX-4LX Tx burst routines set

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 12/20/2019 10:48 AM, Viacheslav Ovsiienko wrote:
> The tx_burst routine supporting multi-segment packets with
> legacy MPW and without inline was missed, and there was no
> valid selection for these options, patch adds the missing
> routine.
> 
> Fixes: 82e75f8323bf ("net/mlx5: fix legacy multi-packet Tx descriptors")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_rxtx.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
> index a7f3bff..57804f5 100644
> --- a/drivers/net/mlx5/mlx5_rxtx.c
> +++ b/drivers/net/mlx5/mlx5_rxtx.c
> @@ -4984,6 +4984,10 @@ enum mlx5_txcmp_code {
>  		MLX5_TXOFF_CONFIG_INLINE | MLX5_TXOFF_CONFIG_EMPW |
>  		MLX5_TXOFF_CONFIG_MPW)
>  
> +MLX5_TXOFF_DECL(mc_mpw,
> +		MLX5_TXOFF_CONFIG_MULTI | MLX5_TXOFF_CONFIG_CSUM |
> +		MLX5_TXOFF_CONFIG_EMPW | MLX5_TXOFF_CONFIG_MPW)
> +
>  MLX5_TXOFF_DECL(i_mpw,
>  		MLX5_TXOFF_CONFIG_INLINE | MLX5_TXOFF_CONFIG_EMPW |
>  		MLX5_TXOFF_CONFIG_MPW)
> @@ -5140,6 +5144,10 @@ enum mlx5_txcmp_code {
>  		MLX5_TXOFF_CONFIG_INLINE | MLX5_TXOFF_CONFIG_EMPW |
>  		MLX5_TXOFF_CONFIG_MPW)
>  
> +MLX5_TXOFF_INFO(mc_mpw,
> +		MLX5_TXOFF_CONFIG_MULTI | MLX5_TXOFF_CONFIG_CSUM |
> +		MLX5_TXOFF_CONFIG_EMPW | MLX5_TXOFF_CONFIG_MPW)
> +
>  MLX5_TXOFF_INFO(i_mpw,
>  		MLX5_TXOFF_CONFIG_INLINE | MLX5_TXOFF_CONFIG_EMPW |
>  		MLX5_TXOFF_CONFIG_MPW)
> @@ -5297,6 +5305,7 @@ enum mlx5_txcmp_code {
>  		DRV_LOG(DEBUG, "port %u has no selected Tx function"
>  			       " for requested offloads %04X",
>  				dev->data->port_id, olx);
> +		assert(false);

Hi Slave,

I think we should avoid PMDs calling the assert unconditionally, specially in a
code that debug level log is printed.

>  		return NULL;
>  	}
>  	DRV_LOG(DEBUG, "port %u has selected Tx function"
>