Commit d1f2cd89 authored Jul 14, 2008 by Eli Cohen Committed by Roland Dreier Jul 14, 2008

IB/mlx4: Configure QPs' max message size based on real device capability

ConnectX returns the max message size it supports through the
QUERY_DEV_CAP firmware command. When modifying a QP to RTR, the max
message size for the QP must be specified. This value must not exceed
the value declared through QUERY_DEV_CAP. The current code ignores
the max allowed size and unconditionally sets the value to 2^31. This
patch sets all QPs to the max value allowed as returned from firmware.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

parent e7e55829

drivers/infiniband/hw/mlx4/qp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -908,7 +908,8 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
		attr->path_mtu);
		goto out;
		}
		context->mtu_msgmax = (attr->path_mtu << 5) \| 31;
		context->mtu_msgmax = (attr->path_mtu << 5) \|
		ilog2(dev->dev->caps.max_msg_sz);
		}

		if (qp->rq.wqe_cnt)

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