[PATCH v2 2/2] IB/mlx5: set UMR wqe fence according to HCA cap

[Sagi Grimberg]

> +static u8 mlx5_get_umr_fence(u8 umr_fence_cap)
> +{
> +	switch (umr_fence_cap) {
> +	case MLX5_CAP_UMR_FENCE_NONE:
> +		return MLX5_FENCE_MODE_NONE;
> +	case MLX5_CAP_UMR_FENCE_SMALL:
> +		return MLX5_FENCE_MODE_INITIATOR_SMALL;
> +	default:
> +		return MLX5_FENCE_MODE_STRONG_ORDERING;
> +	}
> +}

Where are the MLX5_CAP_UMR defines declared? Am I missing something?

What is the value of MLX5_CAP_UMR_FENCE_NONE? if its zero then this
change is not backwards compatible with older FW.