[dpdk-dev] [PATCH v1 1/5] common/iavf: add support for ETS-based Tx QoS

[Ting Xu <ting.xu@intel.com>]

This patch adds support to configure ETS-based Tx QoS. Three parts of
new virtchnl structures and opcodes are added to achieve:
1. Configure VF TC bandwidth limits.
2. VF queries current QoS configuration from PF.
3. Set up VF queue TC mapping.

Signed-off-by: Ting Xu <ting.xu@intel.com>
---
 drivers/common/iavf/iavf_type.h |   2 +
 drivers/common/iavf/virtchnl.h  | 117 ++++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)

diff --git a/drivers/common/iavf/iavf_type.h b/drivers/common/iavf/iavf_type.h
index f3815d523b..73dfb47e70 100644
--- a/drivers/common/iavf/iavf_type.h
+++ b/drivers/common/iavf/iavf_type.h
@@ -141,6 +141,8 @@ enum iavf_debug_mask {
 #define IAVF_PHY_LED_MODE_MASK			0xFFFF
 #define IAVF_PHY_LED_MODE_ORIG			0x80000000
 
+#define IAVF_MAX_TRAFFIC_CLASS	8
+
 /* Memory types */
 enum iavf_memset_type {
 	IAVF_NONDMA_MEM = 0,
diff --git a/drivers/common/iavf/virtchnl.h b/drivers/common/iavf/virtchnl.h
index 3a60faff93..a00cd76118 100644
--- a/drivers/common/iavf/virtchnl.h
+++ b/drivers/common/iavf/virtchnl.h
@@ -130,6 +130,7 @@ enum virtchnl_ops {
 	VIRTCHNL_OP_ADD_CLOUD_FILTER = 32,
 	VIRTCHNL_OP_DEL_CLOUD_FILTER = 33,
 	/* opcodes 34, 35, 36, and 37 are reserved */
+	VIRTCHNL_OP_DCF_CONFIG_VF_TC = 37,
 	VIRTCHNL_OP_DCF_VLAN_OFFLOAD = 38,
 	VIRTCHNL_OP_DCF_CMD_DESC = 39,
 	VIRTCHNL_OP_DCF_CMD_BUFF = 40,
@@ -152,6 +153,8 @@ enum virtchnl_ops {
 	VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2 = 57,
 	VIRTCHNL_OP_ENABLE_VLAN_FILTERING_V2 = 58,
 	VIRTCHNL_OP_DISABLE_VLAN_FILTERING_V2 = 59,
+	VIRTCHNL_OP_GET_QOS_CAPS = 66,
+	VIRTCHNL_OP_CONFIG_TC_MAP = 67,
 	VIRTCHNL_OP_ENABLE_QUEUES_V2 = 107,
 	VIRTCHNL_OP_DISABLE_QUEUES_V2 = 108,
 	VIRTCHNL_OP_MAP_QUEUE_VECTOR = 111,
@@ -398,6 +401,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 #define VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC	BIT(26)
 #define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF		BIT(27)
 #define VIRTCHNL_VF_OFFLOAD_FDIR_PF		BIT(28)
+#define VIRTCHNL_VF_OFFLOAD_TC		BIT(29)
 #define VIRTCHNL_VF_CAP_DCF			BIT(30)
 	/* BIT(31) is reserved */
 
@@ -1786,6 +1790,91 @@ struct virtchnl_fdir_query {
 
 VIRTCHNL_CHECK_STRUCT_LEN(48, virtchnl_fdir_query);
 
+/* VIRTCHNL_OP_DCF_CONFIG_VF_TC
+ * VF send this message to set the configuration of each TC with a
+ * specific vf id.
+ */
+enum virtchnl_bw_limit_type {
+	VIRTCHNL_BW_SHAPER = 0,
+};
+
+struct virtchnl_shaper_bw {
+	u32 committed;
+	u32 peak;
+};
+VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_shaper_bw);
+
+struct virtchnl_dcf_vf_bw_cfg {
+	u8 tc_id;
+	u8 pad[3];
+	enum virtchnl_bw_limit_type type;
+	union {
+		struct virtchnl_shaper_bw shaper;
+		u8 pad2[32];
+	};
+};
+VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_dcf_vf_bw_cfg);
+
+struct virtchnl_dcf_vf_bw_cfg_list {
+	u16 vf_id;
+	u16 num_elem;
+	struct virtchnl_dcf_vf_bw_cfg cfg[1];
+};
+VIRTCHNL_CHECK_STRUCT_LEN(44, virtchnl_dcf_vf_bw_cfg_list);
+
+/* VIRTCHNL_OP_GET_QOS_CAPS
+ * VF sends this message to get its QoS Caps, such as
+ * TC number, Arbiter and Bandwidth.
+ */
+struct virtchnl_qos_cap_elem {
+	u8 tc_id;
+	u8 prio_of_tc;
+#define VIRTCHNL_ABITER_STRICT    0
+#define VIRTCHNL_ABITER_ETS       2
+	u8 arbiter;
+	u8 weight;
+	enum virtchnl_bw_limit_type type;
+	union {
+		struct virtchnl_shaper_bw shaper;
+		u8 pad2[32];
+	};
+};
+VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_qos_cap_elem);
+
+struct virtchnl_qos_cap_list {
+	u16 vsi_id;
+	u16 num_elem;
+	struct virtchnl_qos_cap_elem cap[1];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(44, virtchnl_qos_cap_list);
+
+/* VIRTCHNL_OP_CONFIG_TC_MAP
+ * VF sends message virtchnl_queue_tc_mapping to set queue to tc
+ * mapping for all the Tx and Rx queues with a specified VSI, and
+ * would get response about bitmap of valid user priorities
+ * associated with queues.
+ */
+struct virtchnl_queue_tc_mapping {
+	u16 vsi_id;
+	u16 num_tc;
+	u16 num_queue_pairs;
+	u8 pad[2];
+	union {
+		struct {
+			u16 start_queue_id;
+			u16 queue_count;
+		} req;
+		struct {
+#define VIRTCHNL_USER_PRIO_TYPE_UP	0
+#define VIRTCHNL_USER_PRIO_TYPE_DSCP	1
+			u16 prio_type;
+			u16 valid_prio_bitmap;
+		} resp;
+	} tc[1];
+};
+VIRTCHNL_CHECK_STRUCT_LEN(12, virtchnl_queue_tc_mapping);
+
 /* TX and RX queue types are valid in legacy as well as split queue models.
  * With Split Queue model, 2 additional types are introduced - TX_COMPLETION
  * and RX_BUFFER. In split queue model, RX corresponds to the queue where HW
@@ -2117,6 +2206,19 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
 	case VIRTCHNL_OP_DCF_GET_VSI_MAP:
 	case VIRTCHNL_OP_DCF_GET_PKG_INFO:
 		break;
+	case VIRTCHNL_OP_DCF_CONFIG_VF_TC:
+		valid_len = sizeof(struct virtchnl_dcf_vf_bw_cfg_list);
+		if (msglen >= valid_len) {
+			struct virtchnl_dcf_vf_bw_cfg_list *cfg_list =
+				(struct virtchnl_dcf_vf_bw_cfg_list *)msg;
+			if (cfg_list->num_elem == 0) {
+				err_msg_format = true;
+				break;
+			}
+			valid_len += (cfg_list->num_elem - 1) *
+					 sizeof(struct virtchnl_dcf_vf_bw_cfg);
+		}
+		break;
 	case VIRTCHNL_OP_GET_SUPPORTED_RXDIDS:
 		break;
 	case VIRTCHNL_OP_ADD_RSS_CFG:
@@ -2132,6 +2234,21 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
 	case VIRTCHNL_OP_QUERY_FDIR_FILTER:
 		valid_len = sizeof(struct virtchnl_fdir_query);
 		break;
+	case VIRTCHNL_OP_GET_QOS_CAPS:
+		break;
+	case VIRTCHNL_OP_CONFIG_TC_MAP:
+		valid_len = sizeof(struct virtchnl_queue_tc_mapping);
+		if (msglen >= valid_len) {
+			struct virtchnl_queue_tc_mapping *q_tc =
+				(struct virtchnl_queue_tc_mapping *)msg;
+			if (q_tc->num_tc == 0) {
+				err_msg_format = true;
+				break;
+			}
+			valid_len += (q_tc->num_tc - 1) *
+					 sizeof(q_tc->tc[0]);
+		}
+		break;
 	case VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS:
 		break;
 	case VIRTCHNL_OP_ADD_VLAN_V2:
-- 
2.17.1