Re: [PATCH] IB/mlx: Expose max_fmr to ib_query_device

[Sagi Grimberg <sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

Hi Yuval,

The title prefix should be IB/mlx4:

> Expose max_fmr so it will be available to ULPs.
> max_fmr is num_mpts minus reserved.
>
> Signed-off-by: Yuval Shaia <yuval.shaia-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> ---
>   drivers/infiniband/hw/mlx4/main.c |    1 +
>   1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
> index efecdf0..4f9ff35 100644
> --- a/drivers/infiniband/hw/mlx4/main.c
> +++ b/drivers/infiniband/hw/mlx4/main.c
> @@ -475,6 +475,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
>   	props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
>   	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
>   					   props->max_mcast_grp;
> +	props->max_fmr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;

Umm, this looks like a capability that needs to communicated from the
device. Perhaps this needs to be added to CX3 FW? Or?
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