linux-kernel - [PATCH rdma-next 06/10] nvme-rdma: Enable Relaxed Ordering

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Message-Id: <20210405052404.213889-7-leon@kernel.org>
Date:   Mon,  5 Apr 2021 08:24:00 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>
Cc:     Avihai Horon <avihaih@...dia.com>,
        Adit Ranadive <aditr@...are.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Ariel Elior <aelior@...vell.com>,
        Bart Van Assche <bvanassche@....org>,
        Bernard Metzler <bmt@...ich.ibm.com>,
        Christoph Hellwig <hch@....de>,
        Chuck Lever <chuck.lever@...cle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Devesh Sharma <devesh.sharma@...adcom.com>,
        Faisal Latif <faisal.latif@...el.com>,
        Jack Wang <jinpu.wang@...os.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Jens Axboe <axboe@...com>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        Keith Busch <kbusch@...nel.org>, Lijun Ou <oulijun@...wei.com>,
        linux-cifs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfs@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-rdma@...r.kernel.org, linux-s390@...r.kernel.org,
        Max Gurtovoy <maxg@...lanox.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        "Md. Haris Iqbal" <haris.iqbal@...os.com>,
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        Naresh Kumar PBS <nareshkumar.pbs@...adcom.com>,
        netdev@...r.kernel.org, Potnuri Bharat Teja <bharat@...lsio.com>,
        rds-devel@....oracle.com, Sagi Grimberg <sagi@...mberg.me>,
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        VMware PV-Drivers <pv-drivers@...are.com>,
        Weihang Li <liweihang@...wei.com>,
        Yishai Hadas <yishaih@...dia.com>,
        Zhu Yanjun <zyjzyj2000@...il.com>
Subject: [PATCH rdma-next 06/10] nvme-rdma: Enable Relaxed Ordering

From: Avihai Horon <avihaih@...dia.com>

Enable Relaxed Ordering for nvme.

Relaxed Ordering is an optional access flag and as such, it is ignored
by vendors that don't support it.

Signed-off-by: Avihai Horon <avihaih@...dia.com>
Reviewed-by: Max Gurtovoy <maxg@...lanox.com>
Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/nvme/host/rdma.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 4dbc17311e0b..8f106b20b39c 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -532,9 +532,8 @@ static int nvme_rdma_create_queue_ib(struct nvme_rdma_queue *queue)
 	 */
 	pages_per_mr = nvme_rdma_get_max_fr_pages(ibdev, queue->pi_support) + 1;
 	ret = ib_mr_pool_init(queue->qp, &queue->qp->rdma_mrs,
-			      queue->queue_size,
-			      IB_MR_TYPE_MEM_REG,
-			      pages_per_mr, 0, 0);
+			      queue->queue_size, IB_MR_TYPE_MEM_REG,
+			      pages_per_mr, 0, IB_ACCESS_RELAXED_ORDERING);
 	if (ret) {
 		dev_err(queue->ctrl->ctrl.device,
 			"failed to initialize MR pool sized %d for QID %d\n",
@@ -545,7 +544,8 @@ static int nvme_rdma_create_queue_ib(struct nvme_rdma_queue *queue)
 	if (queue->pi_support) {
 		ret = ib_mr_pool_init(queue->qp, &queue->qp->sig_mrs,
 				      queue->queue_size, IB_MR_TYPE_INTEGRITY,
-				      pages_per_mr, pages_per_mr, 0);
+				      pages_per_mr, pages_per_mr,
+				      IB_ACCESS_RELAXED_ORDERING);
 		if (ret) {
 			dev_err(queue->ctrl->ctrl.device,
 				"failed to initialize PI MR pool sized %d for QID %d\n",
@@ -1382,9 +1382,9 @@ static int nvme_rdma_map_sg_fr(struct nvme_rdma_queue *queue,
 	req->reg_wr.wr.num_sge = 0;
 	req->reg_wr.mr = req->mr;
 	req->reg_wr.key = req->mr->rkey;
-	req->reg_wr.access = IB_ACCESS_LOCAL_WRITE |
-			     IB_ACCESS_REMOTE_READ |
-			     IB_ACCESS_REMOTE_WRITE;
+	req->reg_wr.access = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ |
+			     IB_ACCESS_REMOTE_WRITE |
+			     IB_ACCESS_RELAXED_ORDERING;
 
 	sg->addr = cpu_to_le64(req->mr->iova);
 	put_unaligned_le24(req->mr->length, sg->length);
@@ -1488,9 +1488,8 @@ static int nvme_rdma_map_sg_pi(struct nvme_rdma_queue *queue,
 	wr->wr.send_flags = 0;
 	wr->mr = req->mr;
 	wr->key = req->mr->rkey;
-	wr->access = IB_ACCESS_LOCAL_WRITE |
-		     IB_ACCESS_REMOTE_READ |
-		     IB_ACCESS_REMOTE_WRITE;
+	wr->access = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ |
+		     IB_ACCESS_REMOTE_WRITE | IB_ACCESS_RELAXED_ORDERING;
 
 	sg->addr = cpu_to_le64(req->mr->iova);
 	put_unaligned_le24(req->mr->length, sg->length);
-- 
2.30.2