From: Shy Shyman
> When flow is inserted with meta match item it requires a certain register
> support.
> As part of the flow validation of such flows, the validation function is
> missing
> a check that the mlx5 driver is not in legacy mode in terms of extended meta
> data support (MLX5_XMETA_MODE_LEGACY flag).
> If the driver is in legacy mode it will cause downstream function that
> allocates
> needed register for meta data.
>
> The fix checks explicitly the conditions for support of meta data in FDB mode.
> if the conditions are not met an error message will be issued.
>
> Fixes: 9bf26e1318 ("ethdev: move egress metadata to dynamic field")
> Cc: viachesl...@mellanox.com
> Cc: sta...@dpdk.org
>
> Signed-off-by: Shy Shyman <s...@mellanox.com>
Acked-by: Matan Azrad <ma...@mellanox.com>
