From 73c7a4f2a347ded585d17869604a789a761399a3 Mon Sep 17 00:00:00 2001
From: Debasis Das <quic_ddas@quicinc.com>
Date: Tue, 12 Jul 2022 13:31:49 +0530
Subject: [PATCH] qcacmn: Add support to calculate percentile delay-stats

Add support to calculate percentile of delay-bound
for for Tx-delay stats.

Change-Id: If386e0d1c5091f260aa4281adbd3debde4bf8446
CRs-Fixed: 3243170
---
 dp/inc/cdp_txrx_hist_struct.h |  2 ++
 dp/wifi3.0/dp_hist.c          | 43 ++++++++++++++++++++++++++++++++++-
 dp/wifi3.0/dp_hist.h          |  1 +
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/dp/inc/cdp_txrx_hist_struct.h b/dp/inc/cdp_txrx_hist_struct.h
index 7bdefa5133..16a955b41b 100644
--- a/dp/inc/cdp_txrx_hist_struct.h
+++ b/dp/inc/cdp_txrx_hist_struct.h
@@ -64,12 +64,14 @@ enum cdp_hist_bucket_index {
  * @CDP_HIST_TYPE_REAP_STACK: Rx HW reap to stack deliver delay
  * @CDP_HIST_TYPE_HW_TX_COMP_DELAY: Tx completion delay based on the timestamp
  *                                  provided by HW
+ * @CDP_HIST_TYPE_DELAY_PERCENTILE: Tx completion delay based on the perctile
  */
 enum cdp_hist_types {
 	CDP_HIST_TYPE_SW_ENQEUE_DELAY,
 	CDP_HIST_TYPE_HW_COMP_DELAY,
 	CDP_HIST_TYPE_REAP_STACK,
 	CDP_HIST_TYPE_HW_TX_COMP_DELAY,
+	CDP_HIST_TYPE_DELAY_PERCENTILE,
 	CDP_HIST_TYPE_MAX,
 };
 
diff --git a/dp/wifi3.0/dp_hist.c b/dp/wifi3.0/dp_hist.c
index bda5e78798..0888293e8b 100644
--- a/dp/wifi3.0/dp_hist.c
+++ b/dp/wifi3.0/dp_hist.c
@@ -80,7 +80,7 @@ static uint16_t dp_hist_reap2stack_bucket[CDP_HIST_BUCKET_MAX] = {
 	0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60};
 
 /*
- * dp_hist_hw_tx_comp_dbucket: Tx HW Completion Delay bucket in us
+ * dp_hist_hw_tx_comp_dbucket: tx hw completion delay bucket in us
  * @index_0 = 0_250 us
  * @index_1 = 250_500 us
  * @index_2 = 500_750 us
@@ -114,6 +114,43 @@ const char *dp_hist_tx_hw_delay_str(uint8_t index)
 	return dp_hist_hw_tx_comp_dbucket_str[index];
 }
 
+/*
+ * dp_hist_delay_percentile_dbucket: tx hw completion delay bucket in delay
+ * bound percentile
+ * @index_0 = 0_10
+ * @index_1 = 10_20
+ * @index_2 = 20_30
+ * @index_3 = 30_40
+ * @index_4 = 40_50
+ * @index_5 = 50_60
+ * @index_6 = 60_70
+ * @index_7 = 70_80
+ * @index_8 = 80_100
+ * @index_9 = 90_100
+ * @index_10 = 100_150
+ * @index_11 = 150_200
+ * @index_12 = 200+
+ */
+static uint16_t dp_hist_delay_percentile_dbucket[CDP_HIST_BUCKET_MAX] = {
+	0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150, 200};
+
+static
+const char *dp_hist_delay_percentile_dbucket_str[CDP_HIST_BUCKET_MAX + 1] = {
+	"0 to 10%", "10 to 20%",
+	"20 to  30%", "30 to 40%",
+	"40 to 50%", "50 to 60%",
+	"60 to 70%", "70 to 80%",
+	"80 to 90% ", "90 to 100%",
+	"100 to 150% ", "150 to 200%", "200+%"
+};
+
+const char *dp_hist_delay_percentile_str(uint8_t index)
+{
+	if (index > CDP_HIST_BUCKET_MAX)
+		return "Invalid index";
+	return dp_hist_delay_percentile_dbucket_str[index];
+}
+
 /*
  * dp_hist_find_bucket_idx: Find the bucket index
  * @bucket_array: Bucket array
@@ -168,6 +205,10 @@ static void dp_hist_fill_buckets(struct cdp_hist_bucket *hist_bucket, int value)
 		idx =  dp_hist_find_bucket_idx(
 				&dp_hist_hw_tx_comp_dbucket[0], value);
 		break;
+	case CDP_HIST_TYPE_DELAY_PERCENTILE:
+		idx =  dp_hist_find_bucket_idx(
+				&dp_hist_delay_percentile_dbucket[0], value);
+		break;
 	default:
 		break;
 	}
diff --git a/dp/wifi3.0/dp_hist.h b/dp/wifi3.0/dp_hist.h
index 8290f86375..3071f9dae9 100644
--- a/dp/wifi3.0/dp_hist.h
+++ b/dp/wifi3.0/dp_hist.h
@@ -42,4 +42,5 @@ void dp_accumulate_hist_stats(struct cdp_hist_stats *src_hist_stats,
 void dp_copy_hist_stats(struct cdp_hist_stats *src_hist_stats,
 			struct cdp_hist_stats *dst_hist_stats);
 const char *dp_hist_tx_hw_delay_str(uint8_t index);
+const char *dp_hist_delay_percentile_str(uint8_t index);
 #endif /* __DP_HIST_H_ */