[ofa-general] RE: back to the max_qp_wr attribute

[Jack Morgenstein]

> -----Original Message-----
> From: Or Gerlitz [mailto:ogerlitz at voltaire.com] 
> Sent: Thursday, January 31, 2008 12:31 PM
> To: Roland Dreier; Jack Morgenstein
> Cc: general at lists.openfabrics.org
> Subject: back to the max_qp_wr attribute
> 
> 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?
> 
Yes, the value is FW dependent. The driver returns the value supplied by the FW.

- Jack