From: Saeed Mahameed <saeedm@mellanox.com>
To: Saeed Mahameed <saeedm@mellanox.com>,
Leon Romanovsky <leonro@mellanox.com>
Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
Eli Cohen <eli@mellanox.com>, Parav Pandit <parav@mellanox.com>
Subject: [PATCH mlx5-next 1/4] net/mlx5: Support setting access rights of dma addresses
Date: Tue, 14 Jul 2020 21:28:32 -0700 [thread overview]
Message-ID: <20200715042835.32851-2-saeedm@mellanox.com> (raw)
In-Reply-To: <20200715042835.32851-1-saeedm@mellanox.com>
From: Eli Cohen <eli@mellanox.com>
mlx5_fill_page_frag_array() is used to populate dma addresses to
resources that require it, such as QPs, RQs etc. When the resource is
used, PA list permissions are ignored. For resources that use MTT list,
the user is required to provide the access rights. Subsequent patches
use resources that require MTT lists, so modify API and implementation
to support that.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/alloc.c | 11 +++++++++--
include/linux/mlx5/driver.h | 1 +
include/linux/mlx5/mlx5_ifc.h | 6 ++++++
3 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
index 42198e64a7f49..8db4b5f0f963b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -299,11 +299,18 @@ void mlx5_fill_page_array(struct mlx5_frag_buf *buf, __be64 *pas)
}
EXPORT_SYMBOL_GPL(mlx5_fill_page_array);
-void mlx5_fill_page_frag_array(struct mlx5_frag_buf *buf, __be64 *pas)
+void mlx5_fill_page_frag_array_perm(struct mlx5_frag_buf *buf, __be64 *pas, u8 perm)
{
int i;
+ WARN_ON(perm & 0xfc);
for (i = 0; i < buf->npages; i++)
- pas[i] = cpu_to_be64(buf->frags[i].map);
+ pas[i] = cpu_to_be64(buf->frags[i].map | perm);
+}
+EXPORT_SYMBOL_GPL(mlx5_fill_page_frag_array_perm);
+
+void mlx5_fill_page_frag_array(struct mlx5_frag_buf *buf, __be64 *pas)
+{
+ mlx5_fill_page_frag_array_perm(buf, pas, 0);
}
EXPORT_SYMBOL_GPL(mlx5_fill_page_frag_array);
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 13c0e4556eda9..f2557d7e1355c 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -971,6 +971,7 @@ void mlx5_register_debugfs(void);
void mlx5_unregister_debugfs(void);
void mlx5_fill_page_array(struct mlx5_frag_buf *buf, __be64 *pas);
+void mlx5_fill_page_frag_array_perm(struct mlx5_frag_buf *buf, __be64 *pas, u8 perm);
void mlx5_fill_page_frag_array(struct mlx5_frag_buf *frag_buf, __be64 *pas);
int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn,
unsigned int *irqn);
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 3786888cb1bac..5890e5c9da779 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -10653,4 +10653,10 @@ struct mlx5_ifc_tls_progress_params_bits {
u8 hw_offset_record_number[0x18];
};
+enum {
+ MLX5_MTT_PERM_READ = 1 << 0,
+ MLX5_MTT_PERM_WRITE = 1 << 1,
+ MLX5_MTT_PERM_RW = MLX5_MTT_PERM_READ | MLX5_MTT_PERM_WRITE,
+};
+
#endif /* MLX5_IFC_H */
--
2.26.2
next prev parent reply other threads:[~2020-07-15 4:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-15 4:28 [PATCH mlx5-next 0/4] mlx5 next updates 2020-07-14 Saeed Mahameed
2020-07-15 4:28 ` Saeed Mahameed [this message]
2020-07-15 4:28 ` [PATCH mlx5-next 2/4] net/mlx5: Add VDPA interface type to supported enumerations Saeed Mahameed
2020-07-15 4:28 ` [PATCH mlx5-next 3/4] net/mlx5: Add interface changes required for VDPA Saeed Mahameed
2020-07-15 4:28 ` [PATCH mlx5-next 4/4] net/mlx5: Enable count action for rules with allow action Saeed Mahameed
2020-07-16 6:01 ` [PATCH mlx5-next 0/4] mlx5 next updates 2020-07-14 Saeed Mahameed
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