mlx5dv_alloc_dm - Online Linux Manual PageSection : 3
Updated : 2018-9-1
Source : mlx5
Note : mlx5 Programmer’s Manual
NAMEmlx5dv_alloc_dm - allocates device memory (DM)
SYNOPSIS
#include <infiniband/mlx5dv.h>
struct ibv_dm *mlx5dv_alloc_dm(struct ibv_context *context,
struct ibv_alloc_dm_attr *dm_attr,
struct mlx5dv_alloc_dm_attr *mlx5_dm_attr)
DESCRIPTIONmlx5dv_alloc_dm() allocates device memory (DM) with specific driver properties.
ARGUMENTSPlease see(3) man page for context and dm_attr.
mlx5_dm_attr
struct mlx5dv_alloc_dm_attr {
enum mlx5dv_alloc_dm_type type;
uint64_t comp_mask;
};
type The device memory type user wishes to allocate: MLX5DV_DM_TYPE_MEMIC Device memory of type MEMIC - On-Chip memory that can be allocated and used as memory region for transmitting/receiving packet directly from/to the memory on the chip. MLX5DV_DM_TYPE_STEERING_SW_ICM Device memory of type STEERING SW ICM - This memory is used by the device to store the packet steering tables and rules. Can be used for direct table and steering rules creation when allocated by a privileged user. MLX5DV_DM_TYPE_HEADER_MODIFY_SW_ICM Device memory of type HEADER MODIFY SW ICM - This memory is used by the device to store the packet header modification tables and rules. Can be used for direct table and header modification rules creation when allocated by a privileged user. comp_mask Bitmask specifying what fields in the structure are valid: Currently reserved and should be set to 0.
RETURN VALUEmlx5dv_alloc_dm() returns a pointer to the created DM, on error NULL will be returned and errno will be set.
SEE ALSOibv_alloc_dm(3),
AUTHORAriel Levkovich <lariel@mellanox.com> 0
Johanes Gumabo
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