[ofa-general] [PATCH] mlx4_ib QP max msg size

[Eli Cohen]

Configure QP's max message size according to values queried
by query dev cap. 

Signed-off-by: Eli Cohen <eli at mellnaox.co.il>

---

Index: linux-2.6.23-rc1/drivers/infiniband/hw/mlx4/qp.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mlx4/qp.c	2007-08-08 18:19:30.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mlx4/qp.c	2007-08-08 18:25:42.000000000 +0300
@@ -737,8 +737,9 @@ static int __mlx4_ib_modify_qp(struct ib
 		}
 	}
 
-	if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI ||
-	    ibqp->qp_type == IB_QPT_UD)
+	if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI)
+		context->mtu_msgmax = (IB_MTU_4096 << 5) | 11;
+	else if (ibqp->qp_type == IB_QPT_UD)
 		context->mtu_msgmax = (IB_MTU_4096 << 5) | 11;
 	else if (attr_mask & IB_QP_PATH_MTU) {
 		if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) {
@@ -746,7 +747,8 @@ static int __mlx4_ib_modify_qp(struct ib
 			       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)