diff options
| author | Ben Ben-Ishay <benishay@nvidia.com> | 2020-07-14 14:40:32 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2021-10-26 19:30:39 -0700 |
| commit | d7b896acbdcb3ef5dab1fd2f33ba5a8da6ba1dda (patch) | |
| tree | 5d8fe25c51b483e1fd56237fefa2eb54585f72e2 /include/linux/mlx5/device.h | |
| parent | eaee12f046924eeb1210c7e4f3b326603ff1bd85 (diff) | |
net/mlx5e: Add support to klm_umr_wqe
This commit adds the needed definitions for using the klm_umr_wqe.
UMR stands for user-mode memory registration, is a mechanism to alter
address translation properties of MKEY by posting WorkQueueElement
aka WQE on send queue.
MKEY stands for memory key, MKEY are used to describe a region in memory that
can be later used by HW.
KLM stands for {Key, Length, MemVa}, KLM_MKEY is indirect MKEY that enables
to map multiple memory spaces with different sizes in unified MKEY.
klm_umr_wqe is a UMR that use to update a KLM_MKEY.
SHAMPO feature uses KLM_MKEY for memory registration of his header buffer.
Signed-off-by: Ben Ben-Ishay <benishay@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'include/linux/mlx5/device.h')
| -rw-r--r-- | include/linux/mlx5/device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index 0d30a6184e1d..c920e5932368 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -290,6 +290,7 @@ enum { MLX5_UMR_INLINE = (1 << 7), }; +#define MLX5_UMR_KLM_ALIGNMENT 4 #define MLX5_UMR_MTT_ALIGNMENT 0x40 #define MLX5_UMR_MTT_MASK (MLX5_UMR_MTT_ALIGNMENT - 1) #define MLX5_UMR_MTT_MIN_CHUNK_SIZE MLX5_UMR_MTT_ALIGNMENT |