[dpdk-dev] [PATCH 05/13] net/hns3: add imissed packet stats

[Lijun Ou <oulijun@huawei.com>]

From: "Min Hu (Connor)" <humin29@huawei.com>

This patch implement Rx imissed stats by querying cmdq.

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
---
 drivers/net/hns3/hns3_cmd.h    |   7 +++
 drivers/net/hns3/hns3_ethdev.c |   7 +++
 drivers/net/hns3/hns3_ethdev.h |   1 +
 drivers/net/hns3/hns3_stats.c  | 106 ++++++++++++++++++++++++++++++++++++++++-
 drivers/net/hns3/hns3_stats.h  |   8 ++++
 5 files changed, 128 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_cmd.h b/drivers/net/hns3/hns3_cmd.h
index 2e23f99..93bfa74 100644
--- a/drivers/net/hns3/hns3_cmd.h
+++ b/drivers/net/hns3/hns3_cmd.h
@@ -905,6 +905,13 @@ struct hns3_dev_specs_0_cmd {
 	uint32_t max_tm_rate;
 };
 
+struct hns3_query_rpu_cmd {
+	uint32_t tc_queue_num;
+	uint32_t rsv1[2];
+	uint32_t rpu_rx_pkt_drop_cnt;
+	uint32_t rsv2[2];
+};
+
 #define HNS3_MAX_TQP_NUM_HIP08_PF	64
 #define HNS3_DEFAULT_TX_BUF		0x4000    /* 16k  bytes */
 #define HNS3_TOTAL_PKT_BUF		0x108000  /* 1.03125M bytes */
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 91d720a..34cd038 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -4742,6 +4742,13 @@ hns3_init_pf(struct rte_eth_dev *eth_dev)
 		goto err_cmd_init;
 	}
 
+	/* Hardware statistics of imissed registers cleared. */
+	ret = hns3_update_imissed_stats(hw, true);
+	if (ret) {
+		hns3_err(hw, "clear imissed stats failed, ret = %d", ret);
+		return ret;
+	}
+
 	hns3_config_all_msix_error(hw, true);
 
 	ret = rte_intr_callback_register(&pci_dev->intr_handle,
diff --git a/drivers/net/hns3/hns3_ethdev.h b/drivers/net/hns3/hns3_ethdev.h
index 3a592c0..5299dd8 100644
--- a/drivers/net/hns3/hns3_ethdev.h
+++ b/drivers/net/hns3/hns3_ethdev.h
@@ -434,6 +434,7 @@ struct hns3_hw {
 	struct hns3_tqp_stats tqp_stats;
 	/* Include Mac stats | Rx stats | Tx stats */
 	struct hns3_mac_stats mac_stats;
+	struct hns3_rx_missed_stats imissed_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 7796585..365a3eb 100644
--- a/drivers/net/hns3/hns3_stats.c
+++ b/drivers/net/hns3/hns3_stats.c
@@ -324,6 +324,12 @@ static const struct hns3_xstats_name_offset hns3_tx_queue_strings[] = {
 	{"TX_QUEUE_FBD", HNS3_RING_TX_FBDNUM_REG}
 };
 
+/* The statistic of imissed packet */
+static const struct hns3_xstats_name_offset hns3_imissed_stats_strings[] = {
+	{"RPU_DROP_CNT",
+		HNS3_IMISSED_STATS_FIELD_OFFSET(rpu_rx_drop_cnt)},
+};
+
 #define HNS3_NUM_MAC_STATS (sizeof(hns3_mac_strings) / \
 	sizeof(hns3_mac_strings[0]))
 
@@ -354,8 +360,11 @@ static const struct hns3_xstats_name_offset hns3_tx_queue_strings[] = {
 #define HNS3_NUM_TXQ_BASIC_STATS (sizeof(hns3_txq_basic_stats_strings) / \
 	sizeof(hns3_txq_basic_stats_strings[0]))
 
+#define HNS3_NUM_IMISSED_XSTATS (sizeof(hns3_imissed_stats_strings) / \
+	sizeof(hns3_imissed_stats_strings[0]))
+
 #define HNS3_FIX_NUM_STATS (HNS3_NUM_MAC_STATS + HNS3_NUM_ERROR_INT_XSTATS + \
-			    HNS3_NUM_RESET_XSTATS)
+			    HNS3_NUM_RESET_XSTATS + HNS3_NUM_IMISSED_XSTATS)
 
 static void hns3_tqp_stats_clear(struct hns3_hw *hw);
 static void hns3_tqp_basic_stats_clear(struct rte_eth_dev *dev);
@@ -515,6 +524,52 @@ hns3_update_tqp_stats(struct hns3_hw *hw)
 	return 0;
 }
 
+static int
+hns3_update_rpu_drop_stats(struct hns3_hw *hw)
+{
+	struct hns3_rx_missed_stats *stats = &hw->imissed_stats;
+	struct hns3_query_rpu_cmd *req;
+	struct hns3_cmd_desc desc;
+	uint64_t cnt;
+	uint32_t tc_num;
+	int ret;
+
+	hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_DFX_RPU_REG_0, true);
+	req = (struct hns3_query_rpu_cmd *)desc.data;
+
+	/*
+	 * tc_num is 0, means rpu stats of all TC channels will be
+	 * get from firmware
+	 */
+	tc_num = 0;
+	req->tc_queue_num = rte_cpu_to_le_32(tc_num);
+	ret = hns3_cmd_send(hw, &desc, 1);
+	if (ret) {
+		hns3_err(hw, "failed to query RPU stats: %d", ret);
+		return ret;
+	}
+
+	cnt = rte_le_to_cpu_32(req->rpu_rx_pkt_drop_cnt);
+	stats->rpu_rx_drop_cnt += cnt;
+
+	return 0;
+}
+
+int
+hns3_update_imissed_stats(struct hns3_hw *hw, bool is_clear)
+{
+	int ret;
+
+	ret = hns3_update_rpu_drop_stats(hw);
+	if (ret)
+		return ret;
+
+	if (is_clear)
+		memset(&hw->imissed_stats, 0, sizeof(hw->imissed_stats));
+
+	return 0;
+}
+
 /*
  * Query tqp tx queue statistics ,opcode id: 0x0B03.
  * Query tqp rx queue statistics ,opcode id: 0x0B13.
@@ -531,6 +586,7 @@ hns3_stats_get(struct rte_eth_dev *eth_dev, struct rte_eth_stats *rte_stats)
 {
 	struct hns3_adapter *hns = eth_dev->data->dev_private;
 	struct hns3_hw *hw = &hns->hw;
+	struct hns3_rx_missed_stats *imissed_stats = &hw->imissed_stats;
 	struct hns3_tqp_stats *stats = &hw->tqp_stats;
 	struct hns3_rx_queue *rxq;
 	uint64_t cnt;
@@ -544,6 +600,18 @@ hns3_stats_get(struct rte_eth_dev *eth_dev, struct rte_eth_stats *rte_stats)
 		return ret;
 	}
 
+	if (!hns->is_vf) {
+		/* Update imissed stats */
+		ret = hns3_update_imissed_stats(hw, false);
+		if (ret) {
+			hns3_err(hw, "update imissed stats failed, ret = %d",
+				 ret);
+			return ret;
+		}
+
+		rte_stats->imissed = imissed_stats->rpu_rx_drop_cnt;
+	}
+
 	/* Get the error stats and bytes of received packets */
 	for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
 		rxq = eth_dev->data->rx_queues[i];
@@ -620,6 +688,19 @@ hns3_stats_reset(struct rte_eth_dev *eth_dev)
 		}
 	}
 
+	if (!hns->is_vf) {
+		/*
+		 * Note: Reading hardware statistics of imissed registers will
+		 * clear them.
+		 */
+		ret = hns3_update_imissed_stats(hw, true);
+		if (ret) {
+			hns3_err(hw, "clear imissed stats failed, ret = %d",
+				 ret);
+			return ret;
+		}
+	}
+
 	/*
 	 * Clear soft stats of rx error packet which will be dropped
 	 * in driver.
@@ -932,6 +1013,7 @@ hns3_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 	struct hns3_adapter *hns = dev->data->dev_private;
 	struct hns3_pf *pf = &hns->pf;
 	struct hns3_hw *hw = &hns->hw;
+	struct hns3_rx_missed_stats *imissed_stats = &hw->imissed_stats;
 	struct hns3_mac_stats *mac_stats = &hw->mac_stats;
 	struct hns3_reset_stats *reset_stats = &hw->reset.stats;
 	struct hns3_rx_bd_errors_stats *rx_err_stats;
@@ -970,6 +1052,21 @@ hns3_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 			count++;
 		}
 
+		ret = hns3_update_imissed_stats(hw, false);
+		if (ret) {
+			hns3_err(hw, "update imissed stats failed, ret = %d",
+				 ret);
+			return ret;
+		}
+
+		for (i = 0; i < HNS3_NUM_IMISSED_XSTATS; i++) {
+			addr = (char *)imissed_stats +
+				hns3_imissed_stats_strings[i].offset;
+			xstats[count].value = *(uint64_t *)addr;
+			xstats[count].id = count;
+			count++;
+		}
+
 		for (i = 0; i < HNS3_NUM_ERROR_INT_XSTATS; i++) {
 			addr = (char *)&pf->abn_int_stats +
 			       hns3_error_int_stats_strings[i].offset;
@@ -1112,6 +1209,13 @@ hns3_dev_xstats_get_names(struct rte_eth_dev *dev,
 			count++;
 		}
 
+		for (i = 0; i < HNS3_NUM_IMISSED_XSTATS; i++) {
+			snprintf(xstats_names[count].name,
+				 sizeof(xstats_names[count].name),
+				 "%s", hns3_imissed_stats_strings[i].name);
+			count++;
+		}
+
 		for (i = 0; i < HNS3_NUM_ERROR_INT_XSTATS; i++) {
 			snprintf(xstats_names[count].name,
 				 sizeof(xstats_names[count].name),
diff --git a/drivers/net/hns3/hns3_stats.h b/drivers/net/hns3/hns3_stats.h
index d213be5..01b4f36 100644
--- a/drivers/net/hns3/hns3_stats.h
+++ b/drivers/net/hns3/hns3_stats.h
@@ -110,6 +110,10 @@ struct hns3_mac_stats {
 	uint64_t mac_rx_ctrl_pkt_num;
 };
 
+struct hns3_rx_missed_stats {
+	uint64_t rpu_rx_drop_cnt;
+};
+
 /* store statistics names and its offset in stats structure */
 struct hns3_xstats_name_offset {
 	char name[RTE_ETH_XSTATS_NAME_SIZE];
@@ -141,6 +145,9 @@ struct hns3_reset_stats;
 #define HNS3_TXQ_BASIC_STATS_FIELD_OFFSET(f) \
 	(offsetof(struct hns3_tx_basic_stats, f))
 
+#define HNS3_IMISSED_STATS_FIELD_OFFSET(f) \
+	(offsetof(struct hns3_rx_missed_stats, f))
+
 int hns3_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats);
 int hns3_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 			unsigned int n);
@@ -160,5 +167,6 @@ int hns3_stats_reset(struct rte_eth_dev *dev);
 void hns3_error_int_stats_add(struct hns3_adapter *hns, const char *err);
 int hns3_tqp_stats_init(struct hns3_hw *hw);
 void hns3_tqp_stats_uninit(struct hns3_hw *hw);
+int hns3_update_imissed_stats(struct hns3_hw *hw, bool is_clear);
 
 #endif /* _HNS3_STATS_H_ */
-- 
2.7.4