[dpdk-dev] [PATCH v4 02/17] common/mlx5: add CT offload capability checking

[Bing Zhao <bingz@nvidia.com>]

During startup, the ASO connection tracking offload capability could
be queried via HCA_CAP_QUERY command. If the HW doesn't support ASO
CT, the value would be 0 by default. The following initialization
should be skipped and the creation of the CT object should return
a failure directly.

The following CT creation should also check this capability. With
the old driver, the pre-processing macro should be used in order to
make the compiling pass.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
---
 drivers/common/mlx5/linux/meson.build | 2 ++
 drivers/common/mlx5/mlx5_devx_cmds.c  | 3 +++
 drivers/common/mlx5/mlx5_devx_cmds.h  | 1 +
 drivers/common/mlx5/mlx5_prm.h        | 3 +++
 4 files changed, 9 insertions(+)

diff --git a/drivers/common/mlx5/linux/meson.build b/drivers/common/mlx5/linux/meson.build
index 3334bd5cb2..007834a49b 100644
--- a/drivers/common/mlx5/linux/meson.build
+++ b/drivers/common/mlx5/linux/meson.build
@@ -189,6 +189,8 @@ has_sym_args = [
             'MLX5_WQE_UMR_CTRL_FLAG_INLINE' ],
         [ 'HAVE_MLX5_DR_FLOW_DUMP_RULE', 'infiniband/mlx5dv.h',
             'mlx5dv_dump_dr_rule' ],
+        [ 'HAVE_MLX5_DR_ACTION_ASO_CT', 'infiniband/mlx5dv.h',
+            'MLX5DV_DR_ACTION_FLAGS_ASO_CT_DIRECTION_INITIATOR' ],
 ]
 config = configuration_data()
 foreach arg:has_sym_args
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index 79fff6457c..ad67883fde 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -760,6 +760,9 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 		MLX5_GET(cmd_hca_cap, hcattr, umr_indirect_mkey_disabled);
 	attr->umr_modify_entity_size_disabled =
 		MLX5_GET(cmd_hca_cap, hcattr, umr_modify_entity_size_disabled);
+	attr->ct_offload = !!(MLX5_GET64(cmd_hca_cap, hcattr,
+					 general_obj_types) &
+			      MLX5_GENERAL_OBJ_TYPES_CAP_CONN_TRACK_OFFLOAD);
 	if (attr->qos.sup) {
 		MLX5_SET(query_hca_cap_in, in, op_mod,
 			 MLX5_GET_HCA_CAP_OP_MOD_QOS_CAP |
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
index 870bdb6b30..746320cf04 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -137,6 +137,7 @@ struct mlx5_hca_attr {
 	uint32_t qp_ts_format:2;
 	uint32_t regex:1;
 	uint32_t reg_c_preserve:1;
+	uint32_t ct_offload:1; /* General obj type ASO CT offload supported. */
 	uint32_t regexp_num_of_engines;
 	uint32_t log_max_ft_sampler_num:8;
 	uint32_t geneve_tlv_opt;
diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index 4da89d3379..71bdf43668 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -1134,6 +1134,8 @@ enum {
 			(1ULL << MLX5_GENERAL_OBJ_TYPE_FLOW_METER_ASO)
 #define MLX5_GENERAL_OBJ_TYPES_CAP_GENEVE_TLV_OPT \
 			(1ULL << MLX5_OBJ_TYPE_GENEVE_TLV_OPT)
+#define MLX5_GENERAL_OBJ_TYPES_CAP_CONN_TRACK_OFFLOAD \
+			(1ULL << MLX5_GENERAL_OBJ_TYPE_CONN_TRACK_OFFLOAD)
 
 enum {
 	MLX5_HCA_CAP_OPMOD_GET_MAX   = 0,
@@ -2456,6 +2458,7 @@ enum {
 	MLX5_GENERAL_OBJ_TYPE_FLEX_PARSE_GRAPH = 0x0022,
 	MLX5_GENERAL_OBJ_TYPE_FLOW_METER_ASO = 0x0024,
 	MLX5_GENERAL_OBJ_TYPE_FLOW_HIT_ASO = 0x0025,
+	MLX5_GENERAL_OBJ_TYPE_CONN_TRACK_OFFLOAD = 0x0031,
 };
 
 struct mlx5_ifc_general_obj_in_cmd_hdr_bits {
-- 
2.27.0