linux-kernel - [PATCH 3.14 37/46] IB/mlx4: Fix the SQ size of an RC QP

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Message-Id: <20160818135447.917683792@linuxfoundation.org>
Date:	Thu, 18 Aug 2016 15:54:59 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Yishai Hadas <yishaih@...lanox.com>,
	Jack Morgenstein <jackm@...lanox.co.il>,
	Eran Ben Elisha <eranbe@...lanox.com>,
	Leon Romanovsky <leon@...nel.org>,
	Doug Ledford <dledford@...hat.com>
Subject: [PATCH 3.14 37/46] IB/mlx4: Fix the SQ size of an RC QP

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yishai Hadas <yishaih@...lanox.com>

commit f2940e2c76bb554a7fbdd28ca5b90904117a9e96 upstream.

When calculating the required size of an RC QP send queue, leave
enough space for masked atomic operations, which require more space than
"regular" atomic operation.

Fixes: 6fa8f719844b ("IB/mlx4: Add support for masked atomic operations")
Signed-off-by: Yishai Hadas <yishaih@...lanox.com>
Reviewed-by: Jack Morgenstein <jackm@...lanox.co.il>
Reviewed-by: Eran Ben Elisha <eranbe@...lanox.com>
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Doug Ledford <dledford@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/infiniband/hw/mlx4/qp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -361,7 +361,7 @@ static int send_wqe_overhead(enum mlx4_i
 			sizeof (struct mlx4_wqe_raddr_seg);
 	case MLX4_IB_QPT_RC:
 		return sizeof (struct mlx4_wqe_ctrl_seg) +
-			sizeof (struct mlx4_wqe_atomic_seg) +
+			sizeof (struct mlx4_wqe_masked_atomic_seg) +
 			sizeof (struct mlx4_wqe_raddr_seg);
 	case MLX4_IB_QPT_SMI:
 	case MLX4_IB_QPT_GSI: