[dpdk-dev] [PATCH v6 6/8] net/hns3: support oerrors stats in PF

["Min Hu (Connor)" <humin29@huawei.com>]

This patch added oerrors stats for PF in kunpeng930.

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.h |  1 +
 drivers/net/hns3/hns3_stats.c  | 64 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 6e74ec8..f69e2d8 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -443,6 +443,7 @@ struct hns3_hw {
 	/* Include Mac stats | Rx stats | Tx stats */
 	struct hns3_mac_stats mac_stats;
 	struct hns3_rx_missed_stats imissed_stats;
+	uint64_t oerror_stats;
 	uint32_t fw_version;
 
 	uint16_t num_msi;
diff --git a/drivers/net/hns3/hns3_stats.c b/drivers/net/hns3/hns3_stats.c
index e802c0b..1af689f 100644
--- a/drivers/net/hns3/hns3_stats.c
+++ b/drivers/net/hns3/hns3_stats.c
@@ -519,6 +519,31 @@ hns3_update_port_rx_ssu_drop_stats(struct hns3_hw *hw)
 	return 0;
 }
 
+static int
+hns3_update_port_tx_ssu_drop_stats(struct hns3_hw *hw)
+{
+	struct hns3_cmd_desc desc[HNS3_OPC_SSU_DROP_REG_NUM];
+	struct hns3_query_ssu_cmd *req;
+	uint64_t cnt;
+	int ret;
+
+	ret = hns3_get_ssu_drop_stats(hw, desc, HNS3_OPC_SSU_DROP_REG_NUM,
+				      false);
+	if (ret) {
+		hns3_err(hw, "failed to get Tx SSU drop stats, ret = %d", ret);
+		return ret;
+	}
+
+	req = (struct hns3_query_ssu_cmd *)desc[0].data;
+	cnt = rte_le_to_cpu_32(req->oq_drop_cnt) +
+		rte_le_to_cpu_32(req->full_drop_cnt) +
+		rte_le_to_cpu_32(req->part_drop_cnt);
+
+	hw->oerror_stats += cnt;
+
+	return 0;
+}
+
 int
 hns3_update_imissed_stats(struct hns3_hw *hw, bool is_clear)
 {
@@ -544,6 +569,25 @@ hns3_update_imissed_stats(struct hns3_hw *hw, bool is_clear)
 	return 0;
 }
 
+static int
+hns3_update_oerror_stats(struct hns3_hw *hw, bool is_clear)
+{
+	struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
+	int ret;
+
+	if (hw->drop_stats_mode == HNS3_PKTS_DROP_STATS_MODE1 || hns->is_vf)
+		return 0;
+
+	ret = hns3_update_port_tx_ssu_drop_stats(hw);
+	if (ret)
+		return ret;
+
+	if (is_clear)
+		hw->oerror_stats = 0;
+
+	return 0;
+}
+
 /*
  * Query tqp tx queue statistics ,opcode id: 0x0B03.
  * Query tqp rx queue statistics ,opcode id: 0x0B13.
@@ -608,7 +652,14 @@ hns3_stats_get(struct rte_eth_dev *eth_dev, struct rte_eth_stats *rte_stats)
 		rte_stats->obytes += txq->basic_stats.bytes;
 	}
 
-	rte_stats->oerrors = 0;
+	ret = hns3_update_oerror_stats(hw, false);
+	if (ret) {
+		hns3_err(hw, "update oerror stats failed, ret = %d",
+			 ret);
+		return ret;
+	}
+	rte_stats->oerrors = hw->oerror_stats;
+
 	/*
 	 * If HW statistics are reset by stats_reset, but a lot of residual
 	 * packets exist in the hardware queue and these packets are error
@@ -644,6 +695,17 @@ hns3_stats_reset(struct rte_eth_dev *eth_dev)
 		return ret;
 	}
 
+	/*
+	 * Note: Reading hardware statistics of oerror registers will
+	 * clear them.
+	 */
+	ret = hns3_update_oerror_stats(hw, true);
+	if (ret) {
+		hns3_err(hw, "clear oerror stats failed, ret = %d",
+			 ret);
+		return ret;
+	}
+
 	for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
 		rxq = eth_dev->data->rx_queues[i];
 		if (rxq == NULL)
-- 
2.7.4