Re: [PATCH rdma-core] mlx4: Enable WQ creation with IBV_WQ_FLAGS_SCATTER_FCS

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On Tue, Mar 27, 2018 at 12:37:22PM +0300, Yishai Hadas wrote:
> From: Guy Levi <guyle@xxxxxxxxxxxx>
> 
> Enable WQ creation with the IBV_WQ_FLAGS_SCATTER_FCS flag.
> 
> Prior to using this option an application should check whether the
> IBV_RAW_PACKET_CAP_SCATTER_FCS capability is set on the device's
> raw_packet_caps.
> 
> Signed-off-by: Guy Levi <guyle@xxxxxxxxxxxx>
> Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
> 
> PR was sent:
> https://github.com/linux-rdma/rdma-core/pull/314
> 
>  providers/mlx4/verbs.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/providers/mlx4/verbs.c b/providers/mlx4/verbs.c
> index 9d8d340..534838b 100644
> +++ b/providers/mlx4/verbs.c
> @@ -1422,7 +1422,13 @@ struct ibv_wq *mlx4_create_wq(struct ibv_context *context,
>  		}
>  	}
>  
> -	if (attr->comp_mask) {
> +	if (!check_comp_mask(attr->comp_mask, IBV_WQ_INIT_ATTR_FLAGS)) {
> +		errno = ENOTSUP;
> +		return NULL;
> +	}
> +
> +	if ((attr->comp_mask & IBV_WQ_INIT_ATTR_FLAGS) &&
> +	    (attr->create_flags & ~IBV_WQ_FLAGS_SCATTER_FCS)) {
>  		errno = ENOTSUP;
>  		return NULL;
>  	}

I was looking at this and wondering why we dont have SCATTER_FCS in
include/uapi/rdma at all.

Please send a patch fixing that.

Jason
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