Patch "IB/mlx5: Fix returned values of query QP" has been added to the 4.4-stable tree

Patch "IB/mlx5: Fix returned values of query QP" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    IB/mlx5: Fix returned values of query QP

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ib-mlx5-fix-returned-values-of-query-qp.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 0540d8148d419bf769e5aa99c77027febd8922f0 Mon Sep 17 00:00:00 2001
From: Noa Osherovich <noaos@mellanox.com>
Date: Sat, 4 Jun 2016 15:15:32 +0300
Subject: IB/mlx5: Fix returned values of query QP

From: Noa Osherovich <noaos@mellanox.com>

commit 0540d8148d419bf769e5aa99c77027febd8922f0 upstream.

Some variables were not initialized properly: max_recv_wr,
max_recv_sge, max_send_wr, qp_context and max_inline_data.

Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB...')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx5/qp.c |   14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -226,6 +226,8 @@ static int set_rq_size(struct mlx5_ib_de
 		qp->rq.max_gs = 0;
 		qp->rq.wqe_cnt = 0;
 		qp->rq.wqe_shift = 0;
+		cap->max_recv_wr = 0;
+		cap->max_recv_sge = 0;
 	} else {
 		if (ucmd) {
 			qp->rq.wqe_cnt = ucmd->rq_wqe_count;
@@ -3092,17 +3094,19 @@ int mlx5_ib_query_qp(struct ib_qp *ibqp,
 	qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
 
 	if (!ibqp->uobject) {
-		qp_attr->cap.max_send_wr  = qp->sq.wqe_cnt;
+		qp_attr->cap.max_send_wr  = qp->sq.max_post;
 		qp_attr->cap.max_send_sge = qp->sq.max_gs;
+		qp_init_attr->qp_context = ibqp->qp_context;
 	} else {
 		qp_attr->cap.max_send_wr  = 0;
 		qp_attr->cap.max_send_sge = 0;
 	}
 
-	/* We don't support inline sends for kernel QPs (yet), and we
-	 * don't know what userspace's value should be.
-	 */
-	qp_attr->cap.max_inline_data = 0;
+	qp_init_attr->qp_type = ibqp->qp_type;
+	qp_init_attr->recv_cq = ibqp->recv_cq;
+	qp_init_attr->send_cq = ibqp->send_cq;
+	qp_init_attr->srq = ibqp->srq;
+	qp_attr->cap.max_inline_data = qp->max_inline_data;
 
 	qp_init_attr->cap	     = qp_attr->cap;
 


Patches currently in stable-queue which might be from noaos@mellanox.com are

queue-4.4/ib-mlx5-fix-returned-values-of-query-qp.patch
queue-4.4/ib-mlx5-return-port_err-in-active-to-initializing-tranisition.patch
queue-4.4/ib-mlx5-fix-entries-checks-in-mlx5_ib_create_cq.patch
queue-4.4/ib-mlx5-fix-entries-check-in-mlx5_ib_resize_cq.patch
queue-4.4/ib-mlx5-check-blueflame-hca-support.patch