From dbb85302455e14a364608bc7719ecf120ac39f5d Mon Sep 17 00:00:00 2001
From: Soumya Bhat <soumyab@codeaurora.org>
Date: Fri, 18 May 2018 11:01:34 +0530
Subject: [PATCH] qcacmn: Tx desc counter changes

Add following Tx desc counter changes:
1. Initialize tx_desc allocated counter
2. Initialize tx desc free counter
3. Use per pool tx desc counter num_allocated to populate desc_in_use
   counter

Change-Id: I4d80d0acfbbdd32a9f7d66e938e0a0f4e2cd7048
CRs-Fixed: 2239623
---
 dp/wifi3.0/dp_main.c    | 10 ++++++++++
 dp/wifi3.0/dp_tx_desc.c | 26 +++++++++++++++++++++++++-
 dp/wifi3.0/dp_tx_desc.h |  2 --
 3 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/dp/wifi3.0/dp_main.c b/dp/wifi3.0/dp_main.c
index a7889fca10..51da50da50 100644
--- a/dp/wifi3.0/dp_main.c
+++ b/dp/wifi3.0/dp_main.c
@@ -5241,7 +5241,17 @@ dp_print_pdev_rx_mon_stats(struct dp_pdev *pdev)
 static inline void
 dp_print_soc_tx_stats(struct dp_soc *soc)
 {
+	uint8_t desc_pool_id;
+	soc->stats.tx.desc_in_use = 0;
+
 	DP_PRINT_STATS("SOC Tx Stats:\n");
+
+	for (desc_pool_id = 0;
+	     desc_pool_id < wlan_cfg_get_num_tx_desc_pool(soc->wlan_cfg_ctx);
+	     desc_pool_id++)
+		soc->stats.tx.desc_in_use +=
+			soc->tx_desc[desc_pool_id].num_allocated;
+
 	DP_PRINT_STATS("Tx Descriptors In Use = %d",
 			soc->stats.tx.desc_in_use);
 	DP_PRINT_STATS("Invalid peer:");
diff --git a/dp/wifi3.0/dp_tx_desc.c b/dp/wifi3.0/dp_tx_desc.c
index 1dbba859e8..4c86296b3c 100644
--- a/dp/wifi3.0/dp_tx_desc.c
+++ b/dp/wifi3.0/dp_tx_desc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -38,6 +38,29 @@ do {                                                                 \
 #define DP_TX_DESC_PAGE_DIVIDER(soc, num_desc_per_page, pool_id) {}
 #endif /* DESC_PARTITION */
 
+/**
+ * dp_tx_desc_pool_counter_initialize() - Initialize counters
+ * @tx_desc_pool Handle to DP tx_desc_pool structure
+ * @num_elem Number of descriptor elements per pool
+ *
+ * Return: None
+ */
+#ifdef QCA_LL_TX_FLOW_CONTROL_V2
+static void
+dp_tx_desc_pool_counter_initialize(struct dp_tx_desc_pool_s *tx_desc_pool,
+				  uint16_t num_elem)
+{
+}
+#else
+static void
+dp_tx_desc_pool_counter_initialize(struct dp_tx_desc_pool_s *tx_desc_pool,
+				  uint16_t num_elem)
+{
+	tx_desc_pool->num_free = num_elem;
+	tx_desc_pool->num_allocated = 0;
+}
+#endif
+
 /**
  * dp_tx_desc_pool_alloc() - Allocate Tx Descriptor pool(s)
  * @soc Handle to DP SoC structure
@@ -115,6 +138,7 @@ QDF_STATUS dp_tx_desc_pool_alloc(struct dp_soc *soc, uint8_t pool_id,
 		count++;
 	}
 
+	dp_tx_desc_pool_counter_initialize(tx_desc_pool, num_elem);
 	TX_DESC_LOCK_CREATE(&tx_desc_pool->lock);
 	return QDF_STATUS_SUCCESS;
 
diff --git a/dp/wifi3.0/dp_tx_desc.h b/dp/wifi3.0/dp_tx_desc.h
index 294e52463f..038a325b8c 100644
--- a/dp/wifi3.0/dp_tx_desc.h
+++ b/dp/wifi3.0/dp_tx_desc.h
@@ -274,7 +274,6 @@ static inline struct dp_tx_desc_s *dp_tx_desc_alloc(struct dp_soc *soc,
 	soc->tx_desc[desc_pool_id].num_allocated++;
 	soc->tx_desc[desc_pool_id].num_free--;
 
-	DP_STATS_INC(soc, tx.desc_in_use, 1);
 	tx_desc->flags = DP_TX_DESC_FLAG_ALLOCATED;
 
 	TX_DESC_LOCK_UNLOCK(&soc->tx_desc[desc_pool_id].lock);
@@ -346,7 +345,6 @@ dp_tx_desc_free(struct dp_soc *soc, struct dp_tx_desc_s *tx_desc,
 	tx_desc->flags = 0;
 	tx_desc->next = soc->tx_desc[desc_pool_id].freelist;
 	soc->tx_desc[desc_pool_id].freelist = tx_desc;
-	DP_STATS_DEC(soc, tx.desc_in_use, 1);
 	soc->tx_desc[desc_pool_id].num_allocated--;
 	soc->tx_desc[desc_pool_id].num_free++;