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From: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
To: leonro@nvidia.com, jgg@nvidia.com, zyjzyj2000@gmail.com,
	linux-rdma@vger.kernel.org
Cc: liangwenpeng@huawei.com, liweihang@huawei.com,
	yishaih@nvidia.com, Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Subject: [PATCH 1/2] IB/uverbs: Set LENGTH on IB MR in uverbs layer
Date: Thu,  8 Sep 2022 18:07:07 +0900	[thread overview]
Message-ID: <20220908090708.3997456-1-matsuda-daisuke@fujitsu.com> (raw)

Set 'length' on ib_mr in uverbs layer to let all drivers have it, this
includes both reg/rereg MR flows. Also, this commit removes redundancy in
each driver.

Previously, commit 04c0a5fcfcf65 ("IB/uverbs: Set IOVA on IB MR in uverbs
layer") changed to set 'iova', but seems to have missed 'length' at that
time.

Fixes: 04c0a5fcfcf65 ("IB/uverbs: Set IOVA on IB MR in uverbs layer")
Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
---
 drivers/infiniband/core/uverbs_cmd.c    | 5 ++++-
 drivers/infiniband/hw/hns/hns_roce_mr.c | 1 -
 drivers/infiniband/hw/mlx4/mr.c         | 1 -
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 046376bd68e2..4796f6a8828c 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -739,6 +739,7 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
 	mr->uobject = uobj;
 	atomic_inc(&pd->usecnt);
 	mr->iova = cmd.hca_va;
+	mr->length = cmd.length;
 
 	rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
 	rdma_restrack_set_name(&mr->res, NULL);
@@ -861,8 +862,10 @@ static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
 			mr->pd = new_pd;
 			atomic_inc(&new_pd->usecnt);
 		}
-		if (cmd.flags & IB_MR_REREG_TRANS)
+		if (cmd.flags & IB_MR_REREG_TRANS) {
 			mr->iova = cmd.hca_va;
+			mr->length = cmd.length;
+		}
 	}
 
 	memset(&resp, 0, sizeof(resp));
diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c
index 867972c2a894..dedfa56f5773 100644
--- a/drivers/infiniband/hw/hns/hns_roce_mr.c
+++ b/drivers/infiniband/hw/hns/hns_roce_mr.c
@@ -249,7 +249,6 @@ struct ib_mr *hns_roce_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 		goto err_alloc_pbl;
 
 	mr->ibmr.rkey = mr->ibmr.lkey = mr->key;
-	mr->ibmr.length = length;
 
 	return &mr->ibmr;
 
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 04a67b481608..a40bf58bcdd3 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -439,7 +439,6 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 		goto err_mr;
 
 	mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
-	mr->ibmr.length = length;
 	mr->ibmr.page_size = 1U << shift;
 
 	return &mr->ibmr;
-- 
2.31.1


             reply	other threads:[~2022-09-08  9:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-08  9:07 Daisuke Matsuda [this message]
2022-09-08  9:07 ` [PATCH 2/2] RDMA/rxe: Use members of generic struct in rxe_mr Daisuke Matsuda
2022-09-20 10:58 ` [PATCH 1/2] IB/uverbs: Set LENGTH on IB MR in uverbs layer Leon Romanovsky

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