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From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>,
	Jason Gunthorpe <jgg@mellanox.com>,
	"David S . Miller" <davem@davemloft.net>,
	Santosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Hans Westgaard Ry <hans.westgaard.ry@oracle.com>,
	Moni Shoua <monis@mellanox.com>,
	linux-netdev <netdev@vger.kernel.org>
Subject: [PATCH mlx5-next 03/10] IB/core: Add interface to advise_mr for kernel users
Date: Wed, 15 Jan 2020 14:43:33 +0200
Message-ID: <20200115124340.79108-4-leon@kernel.org> (raw)
In-Reply-To: <20200115124340.79108-1-leon@kernel.org>

From: Moni Shoua <monis@mellanox.com>

Allow ULPs to call advise_mr, so they can control ODP regions
in the same way as user space applications.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/core/verbs.c | 11 +++++++++++
 include/rdma/ib_verbs.h         |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 23d9911f7365..3ebae3b65c28 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2023,6 +2023,17 @@ struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 }
 EXPORT_SYMBOL(ib_reg_user_mr);

+int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice,
+		 u32 flags, struct ib_sge *sg_list, u32 num_sge)
+{
+	if (!pd->device->ops.advise_mr)
+		return -EOPNOTSUPP;
+
+	return pd->device->ops.advise_mr(pd, advice, flags, sg_list, num_sge,
+					 NULL);
+}
+EXPORT_SYMBOL(ib_advise_mr);
+
 int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata)
 {
 	struct ib_pd *pd = mr->pd;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 1aeb92609279..1f779fad3a1e 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4172,6 +4172,9 @@ static inline void ib_dma_free_coherent(struct ib_device *dev,
 struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 			     u64 virt_addr, int mr_access_flags);

+/* ib_advise_mr -  give an advice about an address range in a memory region */
+int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice,
+		 u32 flags, struct ib_sge *sg_list, u32 num_sge);
 /**
  * ib_dereg_mr_user - Deregisters a memory region and removes it from the
  *   HCA translation table.
--
2.20.1


  parent reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-15 12:43 [PATCH mlx5-next 00/10] Use ODP MRs for kernel ULPs Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 01/10] IB: Allow calls to ib_umem_get from " Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 02/10] IB/core: Introduce ib_reg_user_mr Leon Romanovsky
2020-01-15 12:43 ` Leon Romanovsky [this message]
2020-01-15 12:43 ` [PATCH mlx5-next 04/10] IB/mlx5: Add ODP WQE handlers for kernel QPs Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 05/10] RDMA/mlx5: Don't fake udata for kernel path Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 06/10] IB/mlx5: Mask out unsupported ODP capabilities for kernel QPs Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 07/10] RDMA/mlx5: Fix handling of IOVA != user_va in ODP paths Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 08/10] net/rds: Detect need of On-Demand-Paging memory registration Leon Romanovsky
2020-01-15 21:42   ` santosh.shilimkar
2020-01-15 12:43 ` [PATCH mlx5-next 09/10] net/rds: Handle ODP mr registration/unregistration Leon Romanovsky
2020-01-15 21:51   ` santosh.shilimkar
2020-01-16  7:11     ` Leon Romanovsky
2020-01-16  7:22       ` santosh.shilimkar
2020-01-18 10:19   ` Leon Romanovsky
2020-01-15 12:43 ` [PATCH mlx5-next 10/10] net/rds: Use prefetch for On-Demand-Paging MR Leon Romanovsky
2020-01-15 21:43   ` santosh.shilimkar
2020-01-16  6:59 ` [PATCH mlx5-next 00/10] Use ODP MRs for kernel ULPs Leon Romanovsky
2020-01-16 13:57   ` Jason Gunthorpe
2020-01-16 14:04     ` Leon Romanovsky
2020-01-16 19:34     ` santosh.shilimkar
2020-01-17 14:12       ` Jason Gunthorpe

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