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Commit d4cb0784 authored by Or Gerlitz's avatar Or Gerlitz Committed by Roland Dreier
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IB/mthca: Fill in max_map_per_fmr device attribute 



Report the true max_map_per_fmr value from mthca_query_device(),
taking into account the change in FMR remapping introduced by the
Sinai performance optimization.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 6eddb5cb

drivers/infiniband/hw/mthca/mthca_provider.c

+10 −0
Original line number Diff line number Diff line
@@ -115,6 +115,16 @@ static int mthca_query_device(struct ib_device *ibdev, 
	props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;

	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *

					   props->max_mcast_grp;

	/*

	 * If Sinai memory key optimization is being used, then only

	 * the 8-bit key portion will change.  For other HCAs, the

	 * unused index bits will also be used for FMR remapping.

	 */

	if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)

		props->max_map_per_fmr = 255;

	else

		props->max_map_per_fmr =

			(1 << (32 - long_log2(mdev->limits.num_mpts))) - 1;



	err = 0;

 out: