From 7ff47bdfe18b981c14e52c496f830930d7eca099 Mon Sep 17 00:00:00 2001
From: Michal Krawczyk <mk@semihalf.com>
Date: Thu, 9 Jul 2020 11:43:01 +0200
Subject: [PATCH 33/72] net/ena/base: add ENI stats

The Elastic Netfwork Interface (ENI) stats can be acquired from the HW.

They can provide advanced values which can be further used by the
application for better flow management.

It isn't available to the DPDK application, yet. The PMD must expose
them directly.

Change-Id: I5e9ac67ef2d0d2872be12ff0e6fd15801fe9ace5
Signed-off-by: Michal Krawczyk <mk@semihalf.com>
Reviewed-by: Igor Chauskin <igorch@amazon.com>
Reviewed-by: Guy Tzalik <gtzalik@amazon.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/ena/base/ena_com.c                | 19 +++++++++-
 drivers/net/ena/base/ena_com.h                |  9 +++++
 .../net/ena/base/ena_defs/ena_admin_defs.h    | 37 ++++++++++++++++++-
 3 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ena/base/ena_com.c b/drivers/net/ena/base/ena_com.c
index c034537324..ef3aa19359 100644
--- a/drivers/net/ena/base/ena_com.c
+++ b/drivers/net/ena/base/ena_com.c
@@ -2208,6 +2208,21 @@ static int ena_get_dev_stats(struct ena_com_dev *ena_dev,
 	return ret;
 }
 
+int ena_com_get_eni_stats(struct ena_com_dev *ena_dev,
+			  struct ena_admin_eni_stats *stats)
+{
+	struct ena_com_stats_ctx ctx;
+	int ret;
+
+	memset(&ctx, 0x0, sizeof(ctx));
+	ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_ENI);
+	if (likely(ret == 0))
+		memcpy(stats, &ctx.get_resp.u.eni_stats,
+		       sizeof(ctx.get_resp.u.eni_stats));
+
+	return ret;
+}
+
 int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
 				struct ena_admin_basic_stats *stats)
 {
@@ -2217,8 +2232,8 @@ int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
 	memset(&ctx, 0x0, sizeof(ctx));
 	ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_BASIC);
 	if (likely(ret == 0))
-		memcpy(stats, &ctx.get_resp.basic_stats,
-		       sizeof(ctx.get_resp.basic_stats));
+		memcpy(stats, &ctx.get_resp.u.basic_stats,
+		       sizeof(ctx.get_resp.u.basic_stats));
 
 	return ret;
 }
diff --git a/drivers/net/ena/base/ena_com.h b/drivers/net/ena/base/ena_com.h
index 30d36bd9d6..bda2271772 100644
--- a/drivers/net/ena/base/ena_com.h
+++ b/drivers/net/ena/base/ena_com.h
@@ -602,6 +602,15 @@ int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev,
 int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
 				struct ena_admin_basic_stats *stats);
 
+/* ena_com_get_eni_stats - Get extended network interface statistics
+ * @ena_dev: ENA communication layer struct
+ * @stats: stats return value
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_eni_stats(struct ena_com_dev *ena_dev,
+			  struct ena_admin_eni_stats *stats);
+
 /* ena_com_set_dev_mtu - Configure the device mtu.
  * @ena_dev: ENA communication layer struct
  * @mtu: mtu value
diff --git a/drivers/net/ena/base/ena_defs/ena_admin_defs.h b/drivers/net/ena/base/ena_defs/ena_admin_defs.h
index 6d266c4cf4..be1747cd9f 100644
--- a/drivers/net/ena/base/ena_defs/ena_admin_defs.h
+++ b/drivers/net/ena/base/ena_defs/ena_admin_defs.h
@@ -95,6 +95,8 @@ enum ena_admin_completion_policy_type {
 enum ena_admin_get_stats_type {
 	ENA_ADMIN_GET_STATS_TYPE_BASIC              = 0,
 	ENA_ADMIN_GET_STATS_TYPE_EXTENDED           = 1,
+	/* extra HW stats for specific network interface */
+	ENA_ADMIN_GET_STATS_TYPE_ENI                = 2,
 };
 
 enum ena_admin_get_stats_scope {
@@ -388,10 +390,43 @@ struct ena_admin_basic_stats {
 	uint32_t tx_drops_high;
 };
 
+/* ENI Statistics Command. */
+struct ena_admin_eni_stats {
+	/* The number of packets shaped due to inbound aggregate BW
+	 * allowance being exceeded
+	 */
+	uint64_t bw_in_allowance_exceeded;
+
+	/* The number of packets shaped due to outbound aggregate BW
+	 * allowance being exceeded
+	 */
+	uint64_t bw_out_allowance_exceeded;
+
+	/* The number of packets shaped due to PPS allowance being exceeded */
+	uint64_t pps_allowance_exceeded;
+
+	/* The number of packets shaped due to connection tracking
+	 * allowance being exceeded and leading to failure in establishment
+	 * of new connections
+	 */
+	uint64_t conntrack_allowance_exceeded;
+
+	/* The number of packets shaped due to linklocal packet rate
+	 * allowance being exceeded
+	 */
+	uint64_t linklocal_allowance_exceeded;
+};
+
 struct ena_admin_acq_get_stats_resp {
 	struct ena_admin_acq_common_desc acq_common_desc;
 
-	struct ena_admin_basic_stats basic_stats;
+	union {
+		uint64_t raw[7];
+
+		struct ena_admin_basic_stats basic_stats;
+
+		struct ena_admin_eni_stats eni_stats;
+	} u;
 };
 
 struct ena_admin_get_set_feature_common_desc {
-- 
2.25.1

