qcacld-3.0: Add support to add memory tracking in tx path

Add support to add memory tracking in tx path in WLAN driver using
already present infrastructure for memory tracking.

Change-Id: I6a2c9890e0af1fd51c4e2dfcded68f0075a3a4ef
CRs-Fixed: 2025668

core/dp/txrx/ol_rx_fwd.c

@@ -234,13 +234,6 @@ ol_rx_fwd_check(struct ol_txrx_vdev_t *vdev,
 
 				copy = qdf_nbuf_copy(msdu);
 				if (copy) {
-					/* Since this is a private copy of skb
-					 * and part of skb tracking table, so
-					 * mark it to make sure that this skb
-					 * is getting deleted from tracking
-					 * table on receiving tx completion.
-					 */
-					QDF_NBUF_CB_TX_IS_PACKET_PRIV(copy) = 1;
 					ol_rx_fwd_to_tx(tx_vdev, copy);
 					tx_vdev->fwd_tx_packets++;
 				}

core/hdd/src/wlan_hdd_softap_tx_rx.c

@@ -386,6 +386,12 @@ static int __hdd_softap_hard_start_xmit(struct sk_buff *skb,
 	}
 #endif
 
+	/*
+	 * Add SKB to internal tracking table before further processing
+	 * in WLAN driver.
+	 */
+	qdf_net_buf_debug_acquire_skb(skb, __FILE__, __LINE__);
+
 	pAdapter->stats.tx_bytes += skb->len;
 
 	if (qdf_nbuf_is_tso(skb))
@@ -415,12 +421,14 @@ static int __hdd_softap_hard_start_xmit(struct sk_buff *skb,
 			  "%s: Failed to send packet to txrx for staid:%d",
 			  __func__, STAId);
 		++pAdapter->hdd_stats.hddTxRxStats.txXmitDroppedAC[ac];
-		goto drop_pkt;
+		goto drop_pkt_and_release_skb;
 	}
 	netif_trans_update(dev);
 
 	return NETDEV_TX_OK;
 
+drop_pkt_and_release_skb:
+	qdf_net_buf_debug_release_skb(skb);
 drop_pkt:
 
 	DPTRACE(qdf_dp_trace(skb, QDF_DP_TRACE_DROP_PACKET_RECORD,

core/hdd/src/wlan_hdd_tx_rx.c

@@ -545,6 +545,12 @@ static int __hdd_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			goto drop_pkt_accounting;
 	}
 
+	/*
+	 * Add SKB to internal tracking table before further processing
+	 * in WLAN driver.
+	 */
+	qdf_net_buf_debug_acquire_skb(skb, __FILE__, __LINE__);
+
 	/*
 	 * user priority from IP header, which is already extracted and set from
 	 * select_queue call back function
@@ -664,7 +670,7 @@ static int __hdd_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		QDF_TRACE(QDF_MODULE_ID_HDD_DATA, QDF_TRACE_LEVEL_INFO_HIGH,
 			  FL("Tx not allowed for sta_id: %d"), STAId);
 		++pAdapter->hdd_stats.hddTxRxStats.txXmitDroppedAC[ac];
-		goto drop_pkt;
+		goto drop_pkt_and_release_skb;
 	}
 
 	/*
@@ -675,7 +681,7 @@ static int __hdd_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			 "%s: TX function not registered by the data path",
 			 __func__);
 		++pAdapter->hdd_stats.hddTxRxStats.txXmitDroppedAC[ac];
-		goto drop_pkt;
+		goto drop_pkt_and_release_skb;
 	}
 
 	if (pAdapter->tx_fn(pAdapter->txrx_vdev,
@@ -684,12 +690,14 @@ static int __hdd_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			  "%s: Failed to send packet to txrx for staid: %d",
 			  __func__, STAId);
 		++pAdapter->hdd_stats.hddTxRxStats.txXmitDroppedAC[ac];
-		goto drop_pkt;
+		goto drop_pkt_and_release_skb;
 	}
 	netif_trans_update(dev);
 
 	return NETDEV_TX_OK;
 
+drop_pkt_and_release_skb:
+	qdf_net_buf_debug_release_skb(skb);
 drop_pkt:
 
 	if (skb) {