From 47058b5552a9597c2dad3e45b3d0396a5b69dfd7 Mon Sep 17 00:00:00 2001
From: Peter Chiu <chui-hao.chiu@mediatek.com>
Date: Tue, 29 Aug 2023 09:22:18 +0800
Subject: [PATCH] wifi: mt76: update debugfs knob to dump token pending time

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
---
 mt76.h               | 2 ++
 mt7915/mac.c         | 6 ++++++
 mt7915/mtk_debugfs.c | 6 ++----
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/mt76.h b/mt76.h
index aece4eca..9237b22e 100644
--- a/mt76.h
+++ b/mt76.h
@@ -365,6 +365,8 @@ struct mt76_txwi_cache {
 	struct list_head list;
 	dma_addr_t dma_addr;
 
+	unsigned long jiffies;
+
 	union {
 		struct sk_buff *skb;
 		void *ptr;
diff --git a/mt7915/mac.c b/mt7915/mac.c
index 21e8383a..67b42006 100644
--- a/mt7915/mac.c
+++ b/mt7915/mac.c
@@ -802,6 +802,8 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 	if (id < 0)
 		return id;
 
+	t->jiffies = jiffies;
+
 	pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
 	mt7915_mac_write_txwi(mdev, txwi_ptr, tx_info->skb, wcid, pid, key,
 			      qid, 0);
@@ -1000,6 +1002,8 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
 			if (!txwi)
 				continue;
 
+			txwi->jiffies = 0;
+
 			mt76_connac2_txwi_free(mdev, txwi, sta, &free_list);
 		}
 	}
@@ -1032,6 +1036,8 @@ mt7915_mac_tx_free_v0(struct mt7915_dev *dev, void *data, int len)
 		if (!txwi)
 			continue;
 
+		txwi->jiffies = 0;
+
 		mt76_connac2_txwi_free(mdev, txwi, NULL, &free_list);
 	}
 
diff --git a/mt7915/mtk_debugfs.c b/mt7915/mtk_debugfs.c
index 80b7bc1a..46f1b0b6 100644
--- a/mt7915/mtk_debugfs.c
+++ b/mt7915/mtk_debugfs.c
@@ -2211,10 +2211,8 @@ static int mt7915_token_read(struct seq_file *s, void *data)
 	seq_printf(s, "Cut through token:\n");
 	spin_lock_bh(&dev->mt76.token_lock);
 	idr_for_each_entry(&dev->mt76.token, txwi, id) {
-		seq_printf(s, "%4d ", id);
-		count++;
-		if (count % 8 == 0)
-			seq_printf(s, "\n");
+		seq_printf(s, "%4d (token pending %u ms)\n", id,
+			   jiffies_to_msecs(jiffies - txwi->jiffies));
 	}
 	spin_unlock_bh(&dev->mt76.token_lock);
 	seq_printf(s, "\n");
-- 
2.18.0