net/mlx5: Add the log_min_mkey_entity_size capability

Add the capability that will allow the driver to determine the minimal
MTT page size to be able to map the smallest possible pages in XSK. The
older firmwares that don't have this capability default to 12 (i.e.
4096-byte pages).

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 3d963c0..1ad762e 100644 (file)
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1878,7 +1878,13 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
        u8         max_reformat_remove_size[0x8];
        u8         max_reformat_remove_offset[0x8];
 
-       u8         reserved_at_c0[0x160];
+       u8         reserved_at_c0[0xe0];
+
+       u8         reserved_at_1a0[0xb];
+       u8         log_min_mkey_entity_size[0x5];
+       u8         reserved_at_1b0[0x10];
+
+       u8         reserved_at_1c0[0x60];
 
        u8         reserved_at_220[0x1];
        u8         sw_vhca_id_valid[0x1];