[dpdk-dev] [PATCH v2 4/8] common/mlx5: create GENEVE TLV option object with DevX

[Shiri Kuzin]

TLV object is a special firmware maintained entity used
to support match on GENEVE header extension option.

The TLV object is created with DevX API and accepts
the option class, type and lehgth fields.

The class type and length fields are set using MLX5_SET
and the Devx object is created using mlx5 glue function.

Signed-off-by: Shiri Kuzin <shirik at nvidia.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c | 56 +++++++++++++++++++++++++++-
 drivers/common/mlx5/mlx5_devx_cmds.h |  5 +++
 drivers/common/mlx5/version.map      |  1 +
 3 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index fc406af062..08bd357ad1 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -2068,7 +2068,6 @@ mlx5_devx_cmd_create_flow_hit_aso_obj(void *ctx, uint32_t pd)
  *
  * @param[in] ctx
  *   Context returned from mlx5 open_device() glue function.
- *
  * @return
  *   The DevX object created, NULL otherwise and rte_errno is set.
  */
@@ -2097,3 +2096,58 @@ mlx5_devx_cmd_alloc_pd(void *ctx)
 	ppd->id = MLX5_GET(alloc_pd_out, out, pd);
 	return ppd;
 }
+
+/**
+ * Create general object of type GENEVE TLV option using DevX API.
+ *
+ * @param[in] ctx
+ *   Context returned from mlx5 open_device() glue function.
+ * @param [in] class
+ *   TLV option variable value of class
+ * @param [in] type
+ *   TLV option variable value of type
+ * @param [in] len
+ *   TLV option variable value of len
+ *    *
+ * @return
+ *   The DevX object created, NULL otherwise and rte_errno is set.
+ */
+struct mlx5_devx_obj *
+mlx5_devx_cmd_create_geneve_tlv_option(void *ctx,
+		uint16_t class, uint8_t type, uint8_t len)
+{
+	uint32_t in[MLX5_ST_SZ_DW(create_geneve_tlv_option_in)] = {0};
+	uint32_t out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0};
+	struct mlx5_devx_obj *geneve_tlv_opt_obj = mlx5_malloc(MLX5_MEM_ZERO,
+						   sizeof(*geneve_tlv_opt_obj),
+						   0, SOCKET_ID_ANY);
+
+	if (!geneve_tlv_opt_obj) {
+		DRV_LOG(ERR, "Failed to allocate geneve tlv option object.");
+		rte_errno = ENOMEM;
+		return NULL;
+	}
+	void *hdr = MLX5_ADDR_OF(create_geneve_tlv_option_in, in, hdr);
+	void *opt = MLX5_ADDR_OF(create_geneve_tlv_option_in, in,
+			geneve_tlv_opt);
+	MLX5_SET(general_obj_in_cmd_hdr, hdr, opcode,
+			MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
+	MLX5_SET(general_obj_in_cmd_hdr, hdr, obj_type,
+			MLX5_OBJ_TYPE_GENEVE_TLV_OPT);
+	MLX5_SET(geneve_tlv_option, opt, option_class,
+			rte_be_to_cpu_16(class));
+	MLX5_SET(geneve_tlv_option, opt, option_type, type);
+	MLX5_SET(geneve_tlv_option, opt, option_data_length, len);
+	geneve_tlv_opt_obj->obj = mlx5_glue->devx_obj_create(ctx, in,
+					sizeof(in), out, sizeof(out));
+	if (!geneve_tlv_opt_obj->obj) {
+		rte_errno = errno;
+		DRV_LOG(ERR, "Failed to create Geneve tlv option "
+				"Obj using DevX.");
+		mlx5_free(geneve_tlv_opt_obj);
+		return NULL;
+	}
+	geneve_tlv_opt_obj->id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
+	return geneve_tlv_opt_obj;
+}
+
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
index 6b2f77837b..6774b49d2d 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -483,6 +483,11 @@ __rte_internal
 int mlx5_devx_cmd_register_read(void *ctx, uint16_t reg_id,
 				uint32_t arg, uint32_t *data, uint32_t dw_cnt);
 
+__rte_internal
+struct mlx5_devx_obj *
+mlx5_devx_cmd_create_geneve_tlv_option(void *ctx,
+		uint16_t class, uint8_t type, uint8_t len);
+
 /**
  * Create virtio queue counters object DevX API.
  *
diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map
index fb3952bbc6..7de8006b89 100644
--- a/drivers/common/mlx5/version.map
+++ b/drivers/common/mlx5/version.map
@@ -23,6 +23,7 @@ INTERNAL {
 	mlx5_devx_cmd_create_virtio_q_counters;
 	mlx5_devx_cmd_create_virtq;
         mlx5_devx_cmd_create_flow_hit_aso_obj;
+	mlx5_devx_cmd_create_geneve_tlv_option;
 	mlx5_devx_cmd_destroy;
 	mlx5_devx_cmd_flow_counter_alloc;
 	mlx5_devx_cmd_flow_counter_query;
-- 
2.21.0