From 1027e8ca6d436220cea67e84202f22467cfa49fa Mon Sep 17 00:00:00 2001
From: Yun Park <yunp@codeaurora.org>
Date: Fri, 13 Oct 2017 15:17:37 -0700
Subject: [PATCH] qcacld-3.0: Implement clearStats for TSO and NAPI statistics

Implement missing clearStats for TSO and NAPI statistics.

Change-Id: I384a6abcecca8276dadc647e93720e067f324aab
CRs-Fixed: 2024016
---
 core/dp/txrx/ol_txrx.c       | 24 ++++++++++++++++++++++++
 core/hdd/inc/wlan_hdd_napi.h |  2 ++
 core/hdd/src/wlan_hdd_napi.c | 30 ++++++++++++++++++++++++++++++
 core/hdd/src/wlan_hdd_wext.c |  3 +++
 4 files changed, 59 insertions(+)

diff --git a/core/dp/txrx/ol_txrx.c b/core/dp/txrx/ol_txrx.c
index b25b18b137da..54e408b4476c 100644
--- a/core/dp/txrx/ol_txrx.c
+++ b/core/dp/txrx/ol_txrx.c
@@ -1124,7 +1124,21 @@ static void ol_txrx_stats_display_tso(ol_txrx_pdev_handle pdev)
 		}
 	}
 }
+
+static void ol_txrx_tso_stats_clear(ol_txrx_pdev_handle pdev)
+{
+	qdf_mem_zero(&pdev->stats.pub.tx.tso.tso_pkts,
+		     sizeof(struct ol_txrx_stats_elem));
+#if defined(FEATURE_TSO)
+	qdf_mem_zero(&pdev->stats.pub.tx.tso.tso_info,
+		     sizeof(struct ol_txrx_stats_tso_info));
+	qdf_mem_zero(&pdev->stats.pub.tx.tso.tso_hist,
+		     sizeof(struct ol_txrx_tso_histogram));
+#endif
+}
+
 #else
+
 static void ol_txrx_stats_display_tso(ol_txrx_pdev_handle pdev)
 {
 	QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_ERROR,
@@ -1147,6 +1161,13 @@ static void ol_txrx_tso_stats_deinit(ol_txrx_pdev_handle pdev)
 	 */
 }
 
+static void ol_txrx_tso_stats_clear(ol_txrx_pdev_handle pdev)
+{
+	/*
+	 * keeping the body empty and not keeping an error print as print will
+	 * will show up everytime during driver unload if TSO is not enabled.
+	 */
+}
 #endif /* defined(FEATURE_TSO) && defined(FEATURE_TSO_DEBUG) */
 
 /**
@@ -4676,6 +4697,9 @@ static void ol_txrx_clear_stats(uint16_t value)
 	case CDP_TXRX_PATH_STATS:
 		ol_txrx_stats_clear(pdev);
 		break;
+	case CDP_TXRX_TSO_STATS:
+		ol_txrx_tso_stats_clear(pdev);
+		break;
 	case CDP_DUMP_TX_FLOW_POOL_INFO:
 		ol_tx_clear_flow_pool_stats();
 		break;
diff --git a/core/hdd/inc/wlan_hdd_napi.h b/core/hdd/inc/wlan_hdd_napi.h
index 6640de0cb8f9..1a027c75f6a4 100644
--- a/core/hdd/inc/wlan_hdd_napi.h
+++ b/core/hdd/inc/wlan_hdd_napi.h
@@ -49,6 +49,7 @@ int hdd_napi_enabled(int id);
 int hdd_napi_create(void);
 int hdd_napi_destroy(int force);
 int hdd_display_napi_stats(void);
+int hdd_clear_napi_stats(void);
 
 /* the following triggers napi_enable/disable as required */
 int hdd_napi_event(enum qca_napi_event event, void *data);
@@ -88,6 +89,7 @@ static inline int hdd_napi_enabled(int id) { return 0; }
 static inline int hdd_napi_create(void) { return 0; }
 static inline int hdd_napi_destroy(int force) { return 0; }
 static inline int hdd_display_napi_stats(void) { return 0; }
+static inline int hdd_clear_napi_stats(void) { return 0; }
 static inline int hdd_napi_event(enum qca_napi_event event, void *data)
 {
 	return 0;
diff --git a/core/hdd/src/wlan_hdd_napi.c b/core/hdd/src/wlan_hdd_napi.c
index f6c8383f75e8..d078c3d4d963 100644
--- a/core/hdd/src/wlan_hdd_napi.c
+++ b/core/hdd/src/wlan_hdd_napi.c
@@ -455,3 +455,33 @@ int hdd_display_napi_stats(void)
 	return 0;
 }
 
+/**
+ * hdd_clear_napi_stats() - clear NAPI stats
+ *
+ * Return: == 0: success; !=0: failure
+ */
+int hdd_clear_napi_stats(void)
+{
+	int i, j;
+	struct qca_napi_data *napid;
+	struct qca_napi_info *napii;
+	struct qca_napi_stat *napis;
+
+	napid = hdd_napi_get_all();
+	if (NULL == napid) {
+		hdd_err("%s unable to retrieve napi structure", __func__);
+		return -EFAULT;
+	}
+
+	for (i = 0; i < CE_COUNT_MAX; i++)
+		if (napid->ce_map & (0x01 << i)) {
+			napii = napid->napis[i];
+			for (j = 0; j < NR_CPUS; j++) {
+				napis = &(napii->stats[j]);
+				qdf_mem_zero(napis,
+					     sizeof(struct qca_napi_stat));
+			}
+		}
+
+	return 0;
+}
diff --git a/core/hdd/src/wlan_hdd_wext.c b/core/hdd/src/wlan_hdd_wext.c
index 8744924d5031..adb83f6d733e 100644
--- a/core/hdd/src/wlan_hdd_wext.c
+++ b/core/hdd/src/wlan_hdd_wext.c
@@ -8880,6 +8880,9 @@ static int __iw_setint_getnone(struct net_device *dev,
 		case CDP_HIF_STATS:
 			hdd_clear_hif_stats();
 			break;
+		case CDP_NAPI_STATS:
+			hdd_clear_napi_stats();
+			break;
 		default:
 			cdp_clear_stats(cds_get_context(QDF_MODULE_ID_SOC),
 						set_value);