[ofa-general] back to the max_qp_wr attribute

[Dotan Barak]

Or Gerlitz wrote:
> Hi,
>
> Doing HCA query (using ibv_devinfo on a system with two HCAs, memfull
> Arbel and connectx, see details below), I have noticed that the value
> of the max_qp_wr attribute is different, 64K on Arbel and 16K on connectx.
>
> I thought that its possible that on the mlx4 case some filter function is
> applied on the values returned by the FW, but I could not find an evidence
> for that in the code - Roland, am I right and you return the FW values?
>
> Jack, if this is not the case, can you confirm that the connectx supported
> value is indeed 16K, is it FW depedent?
>
>   
In mlx4 (and in other HCAs too) this value comes from the FW using the 
command QUERY_DEV_CAP.

Dotan