Linux-RDMA Archive on lore.kernel.org
 help / color / Atom feed
From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Guy Levi <guyle@mellanox.com>, Ido Kalir <idok@mellanox.com>,
	Jason Gunthorpe <jgg@ziepe.ca>, Majd Dibbiny <majd@mellanox.com>,
	Mark Zhang <markz@mellanox.com>, Moni Shoua <monis@mellanox.com>
Subject: [PATCH rdma-rc 6/8] IB/mlx5: Report and handle ODP support properly
Date: Thu, 15 Aug 2019 11:38:32 +0300
Message-ID: <20190815083834.9245-7-leon@kernel.org> (raw)
In-Reply-To: <20190815083834.9245-1-leon@kernel.org>

From: Moni Shoua <monis@mellanox.com>

ODP depends on the several device capabilities, among them is the ability
to send UMR WQEs with that modify atomic and entity size of the MR.
Therefore, only if all conditions to send such a UMR WQE are met then
driver can report that ODP is supported. Use this check of conditions
in all places where driver needs to know about ODP support.

Also, implicit ODP support depends on ability of driver to send UMR WQEs
for an indirect mkey. Therefore, verify that all conditions to do so are
met when reporting support.

Fixes: c8d75a980fab ("IB/mlx5: Respect new UMR capabilities")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Guy Levi <guyle@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/hw/mlx5/main.c |  6 +++---
 drivers/infiniband/hw/mlx5/odp.c  | 17 +++++++++--------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index e12a4404096b..0569bcab02d4 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1023,7 +1023,7 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
 	props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
 
 	if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) {
-		if (MLX5_CAP_GEN(mdev, pg))
+		if (dev->odp_caps.general_caps & IB_ODP_SUPPORT)
 			props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
 		props->odp_caps = dev->odp_caps;
 	}
@@ -6139,6 +6139,8 @@ static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
 		dev->port[i].roce.last_port_state = IB_PORT_DOWN;
 	}
 
+	mlx5_ib_internal_fill_odp_caps(dev);
+
 	err = mlx5_ib_init_multiport_master(dev);
 	if (err)
 		return err;
@@ -6563,8 +6565,6 @@ static void mlx5_ib_stage_dev_res_cleanup(struct mlx5_ib_dev *dev)
 
 static int mlx5_ib_stage_odp_init(struct mlx5_ib_dev *dev)
 {
-	mlx5_ib_internal_fill_odp_caps(dev);
-
 	return mlx5_ib_odp_init_one(dev);
 }
 
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index 1d257d1b3b0d..0a59912a4cef 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -301,7 +301,8 @@ void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
 
 	memset(caps, 0, sizeof(*caps));
 
-	if (!MLX5_CAP_GEN(dev->mdev, pg))
+	if (!MLX5_CAP_GEN(dev->mdev, pg) ||
+	    !mlx5_ib_can_use_umr(dev, true))
 		return;
 
 	caps->general_caps = IB_ODP_SUPPORT;
@@ -355,7 +356,8 @@ void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
 
 	if (MLX5_CAP_GEN(dev->mdev, fixed_buffer_size) &&
 	    MLX5_CAP_GEN(dev->mdev, null_mkey) &&
-	    MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset))
+	    MLX5_CAP_GEN(dev->mdev, umr_extended_translation_offset) &&
+	    !MLX5_CAP_GEN(dev->mdev, umr_indirect_mkey_disabled))
 		caps->general_caps |= IB_ODP_SUPPORT_IMPLICIT;
 
 	return;
@@ -1622,8 +1624,10 @@ int mlx5_ib_odp_init_one(struct mlx5_ib_dev *dev)
 {
 	int ret = 0;
 
-	if (dev->odp_caps.general_caps & IB_ODP_SUPPORT)
-		ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_odp_ops);
+	if (!(dev->odp_caps.general_caps & IB_ODP_SUPPORT))
+		return ret;
+
+	ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_odp_ops);
 
 	if (dev->odp_caps.general_caps & IB_ODP_SUPPORT_IMPLICIT) {
 		ret = mlx5_cmd_null_mkey(dev->mdev, &dev->null_mkey);
@@ -1633,9 +1637,6 @@ int mlx5_ib_odp_init_one(struct mlx5_ib_dev *dev)
 		}
 	}
 
-	if (!MLX5_CAP_GEN(dev->mdev, pg))
-		return ret;
-
 	ret = mlx5_ib_create_pf_eq(dev, &dev->odp_pf_eq);
 
 	return ret;
@@ -1643,7 +1644,7 @@ int mlx5_ib_odp_init_one(struct mlx5_ib_dev *dev)
 
 void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *dev)
 {
-	if (!MLX5_CAP_GEN(dev->mdev, pg))
+	if (!(dev->odp_caps.general_caps & IB_ODP_SUPPORT))
 		return;
 
 	mlx5_ib_destroy_pf_eq(dev, &dev->odp_pf_eq);
-- 
2.20.1


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-15  8:38 [PATCH rdma-rc 0/8] Fixes for v5.3 Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 1/8] IB/core: Fix NULL pointer dereference when bind QP to counter Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 2/8] RDMA/counters: Properly implement PID checks Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 3/8] RDMA/restrack: Rewrite PID namespace check to be reliable Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 4/8] RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 5/8] IB/mlx5: Consolidate use_umr checks into single function Leon Romanovsky
2019-08-15  8:38 ` Leon Romanovsky [this message]
2019-08-15  8:38 ` [PATCH rdma-rc 7/8] IB/mlx5: Fix MR re-registration flow to use UMR properly Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 8/8] IB/mlx5: Block MR WR if UMR is not possible Leon Romanovsky
2019-08-15 19:29 ` [PATCH rdma-rc 0/8] Fixes for v5.3 Jason Gunthorpe
2019-08-15 20:26   ` Guy Levi(SW)
2019-08-20 16:56 ` Doug Ledford
2019-08-20 17:38   ` Jason Gunthorpe
2019-08-20 17:47     ` Doug Ledford

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190815083834.9245-7-leon@kernel.org \
    --to=leon@kernel.org \
    --cc=dledford@redhat.com \
    --cc=guyle@mellanox.com \
    --cc=idok@mellanox.com \
    --cc=jgg@mellanox.com \
    --cc=jgg@ziepe.ca \
    --cc=leonro@mellanox.com \
    --cc=linux-rdma@vger.kernel.org \
    --cc=majd@mellanox.com \
    --cc=markz@mellanox.com \
    --cc=monis@mellanox.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-RDMA Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-rdma/0 linux-rdma/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rdma linux-rdma/ https://lore.kernel.org/linux-rdma \
		linux-rdma@vger.kernel.org
	public-inbox-index linux-rdma

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-rdma


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git