[dpdk-dev] [PATCH v4 19/25] common/mlx5: add DevX command to modify RQT

[Matan Azrad <matan@mellanox.com>]

RQ table can be changed to support different list of queues.

Add DevX command to modify DevX RQT object to point on new RQ list.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c            | 47 +++++++++++++++++++++++++
 drivers/common/mlx5/mlx5_devx_cmds.h            |  2 ++
 drivers/common/mlx5/mlx5_prm.h                  | 21 +++++++++++
 drivers/common/mlx5/rte_common_mlx5_version.map |  1 +
 4 files changed, 71 insertions(+)

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index e372df6..1d3a729 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -864,6 +864,53 @@ struct mlx5_devx_obj *
 }
 
 /**
+ * Modify RQT using DevX API.
+ *
+ * @param[in] rqt
+ *   Pointer to RQT DevX object structure.
+ * @param [in] rqt_attr
+ *   Pointer to RQT attributes structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_devx_cmd_modify_rqt(struct mlx5_devx_obj *rqt,
+			 struct mlx5_devx_rqt_attr *rqt_attr)
+{
+	uint32_t inlen = MLX5_ST_SZ_BYTES(modify_rqt_in) +
+			 rqt_attr->rqt_actual_size * sizeof(uint32_t);
+	uint32_t out[MLX5_ST_SZ_DW(modify_rqt_out)] = {0};
+	uint32_t *in = rte_calloc(__func__, 1, inlen, 0);
+	void *rqt_ctx;
+	int i;
+	int ret;
+
+	if (!in) {
+		DRV_LOG(ERR, "Failed to allocate RQT modify IN data.");
+		rte_errno = ENOMEM;
+		return -ENOMEM;
+	}
+	MLX5_SET(modify_rqt_in, in, opcode, MLX5_CMD_OP_MODIFY_RQT);
+	MLX5_SET(modify_rqt_in, in, rqtn, rqt->id);
+	MLX5_SET64(modify_rqt_in, in, modify_bitmask, 0x1);
+	rqt_ctx = MLX5_ADDR_OF(modify_rqt_in, in, rqt_context);
+	MLX5_SET(rqtc, rqt_ctx, list_q_type, rqt_attr->rq_type);
+	MLX5_SET(rqtc, rqt_ctx, rqt_max_size, rqt_attr->rqt_max_size);
+	MLX5_SET(rqtc, rqt_ctx, rqt_actual_size, rqt_attr->rqt_actual_size);
+	for (i = 0; i < rqt_attr->rqt_actual_size; i++)
+		MLX5_SET(rqtc, rqt_ctx, rq_num[i], rqt_attr->rq_list[i]);
+	ret = mlx5_glue->devx_obj_modify(rqt->obj, in, inlen, out, sizeof(out));
+	rte_free(in);
+	if (ret) {
+		DRV_LOG(ERR, "Failed to modify RQT using DevX.");
+		rte_errno = errno;
+		return -rte_errno;
+	}
+	return ret;
+}
+
+/**
  * Create SQ using DevX API.
  *
  * @param[in] ctx
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
index 9ef3ce2..b99c54b 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -344,5 +344,7 @@ struct mlx5_devx_obj *mlx5_devx_cmd_create_qp(struct ibv_context *ctx,
 					      struct mlx5_devx_qp_attr *attr);
 int mlx5_devx_cmd_modify_qp_state(struct mlx5_devx_obj *qp,
 				  uint32_t qp_st_mod_op, uint32_t remote_qp_id);
+int mlx5_devx_cmd_modify_rqt(struct mlx5_devx_obj *rqt,
+			     struct mlx5_devx_rqt_attr *rqt_attr);
 
 #endif /* RTE_PMD_MLX5_DEVX_CMDS_H_ */
diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index e326868..b48cd0a 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -747,6 +747,7 @@ enum {
 	MLX5_CMD_OP_CREATE_TIS = 0x912,
 	MLX5_CMD_OP_QUERY_TIS = 0x915,
 	MLX5_CMD_OP_CREATE_RQT = 0x916,
+	MLX5_CMD_OP_MODIFY_RQT = 0x917,
 	MLX5_CMD_OP_ALLOC_FLOW_COUNTER = 0x939,
 	MLX5_CMD_OP_QUERY_FLOW_COUNTER = 0x93b,
 	MLX5_CMD_OP_CREATE_GENERAL_OBJECT = 0xa00,
@@ -1774,10 +1775,30 @@ struct mlx5_ifc_create_rqt_in_bits {
 	u8 reserved_at_40[0xc0];
 	struct mlx5_ifc_rqtc_bits rqt_context;
 };
+
+struct mlx5_ifc_modify_rqt_in_bits {
+	u8 opcode[0x10];
+	u8 uid[0x10];
+	u8 reserved_at_20[0x10];
+	u8 op_mod[0x10];
+	u8 reserved_at_40[0x8];
+	u8 rqtn[0x18];
+	u8 reserved_at_60[0x20];
+	u8 modify_bitmask[0x40];
+	u8 reserved_at_c0[0x40];
+	struct mlx5_ifc_rqtc_bits rqt_context;
+};
 #ifdef PEDANTIC
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
 
+struct mlx5_ifc_modify_rqt_out_bits {
+	u8 status[0x8];
+	u8 reserved_at_8[0x18];
+	u8 syndrome[0x20];
+	u8 reserved_at_40[0x40];
+};
+
 enum {
 	MLX5_SQC_STATE_RST  = 0x0,
 	MLX5_SQC_STATE_RDY  = 0x1,
diff --git a/drivers/common/mlx5/rte_common_mlx5_version.map b/drivers/common/mlx5/rte_common_mlx5_version.map
index df8e064..95ca54a 100644
--- a/drivers/common/mlx5/rte_common_mlx5_version.map
+++ b/drivers/common/mlx5/rte_common_mlx5_version.map
@@ -17,6 +17,7 @@ DPDK_20.02 {
 	mlx5_devx_cmd_mkey_create;
 	mlx5_devx_cmd_modify_qp_state;
 	mlx5_devx_cmd_modify_rq;
+	mlx5_devx_cmd_modify_rqt;
 	mlx5_devx_cmd_modify_sq;
 	mlx5_devx_cmd_modify_virtq;
 	mlx5_devx_cmd_qp_query_tis_td;
-- 
1.8.3.1