From 1dcb6c36a5ebac46099b6363ccf8f4e7563d51e2 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Tue, 14 Jul 2020 21:28:32 -0700 Subject: [PATCH] net/mlx5: Support setting access rights of dma addresses 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 Reviewed-by: Parav Pandit Signed-off-by: Saeed Mahameed --- 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 42198e64a7f4..8db4b5f0f963 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 13c0e4556eda..f2557d7e1355 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 3786888cb1ba..5890e5c9da77 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 */