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From: Shayne Chen <shayne.chen@mediatek.com>
To: Felix Fietkau <nbd@nbd.name>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	Lorenzo Bianconi <lorenzo.bianconi@redhat.com>,
	Ryder Lee <ryder.lee@mediatek.com>,
	Evelyn Tsai <evelyn.tsai@mediatek.com>,
	linux-mediatek <linux-mediatek@lists.infradead.org>,
	Shayne Chen <shayne.chen@mediatek.com>
Subject: [PATCH 2/2] mt76: mt7915: fix rx fcs error count in testmode
Date: Tue, 8 Jun 2021 14:55:58 +0800	[thread overview]
Message-ID: <20210608065558.8117-2-shayne.chen@mediatek.com> (raw)
In-Reply-To: <20210608065558.8117-1-shayne.chen@mediatek.com>

FCS error packets are filtered by default and won't be reported to
driver, so that RX fcs error and PER in testmode always show zero.
Fix this issue by reading fcs error count from hw counter.

We did't fix this issue by disabling fcs error rx filter since it may
let HW suffer some SER errors.

Fixes: 5d8a83f09941 ("mt76: mt7915: implement testmode rx support")
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
---
 .../wireless/mediatek/mt76/mt7915/testmode.c  | 21 +++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c b/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
index f9d81e3..b220b33 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
@@ -464,10 +464,17 @@ mt7915_tm_set_tx_frames(struct mt7915_phy *phy, bool en)
 static void
 mt7915_tm_set_rx_frames(struct mt7915_phy *phy, bool en)
 {
-	if (en)
+	mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, false);
+
+	if (en) {
+		struct mt7915_dev *dev = phy->dev;
+
 		mt7915_tm_update_channel(phy);
 
-	mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, en);
+		/* read-clear */
+		mt76_rr(dev, MT_MIB_SDR3(phy != &dev->phy));
+		mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, en);
+	}
 }
 
 static int
@@ -690,7 +697,11 @@ static int
 mt7915_tm_dump_stats(struct mt76_phy *mphy, struct sk_buff *msg)
 {
 	struct mt7915_phy *phy = mphy->priv;
+	struct mt7915_dev *dev = phy->dev;
+	bool ext_phy = phy != &dev->phy;
+	enum mt76_rxq_id q;
 	void *rx, *rssi;
+	u16 fcs_err;
 	int i;
 
 	rx = nla_nest_start(msg, MT76_TM_STATS_ATTR_LAST_RX);
@@ -735,6 +746,12 @@ mt7915_tm_dump_stats(struct mt76_phy *mphy, struct sk_buff *msg)
 
 	nla_nest_end(msg, rx);
 
+	fcs_err = mt76_get_field(dev, MT_MIB_SDR3(ext_phy),
+				 MT_MIB_SDR3_FCS_ERR_MASK);
+	q = ext_phy ? MT_RXQ_EXT : MT_RXQ_MAIN;
+	mphy->test.rx_stats.packets[q] += fcs_err;
+	mphy->test.rx_stats.fcs_error[q] += fcs_err;
+
 	return 0;
 }
 
-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: Shayne Chen <shayne.chen@mediatek.com>
To: Felix Fietkau <nbd@nbd.name>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	Lorenzo Bianconi <lorenzo.bianconi@redhat.com>,
	Ryder Lee <ryder.lee@mediatek.com>,
	"Evelyn Tsai" <evelyn.tsai@mediatek.com>,
	linux-mediatek <linux-mediatek@lists.infradead.org>,
	Shayne Chen <shayne.chen@mediatek.com>
Subject: [PATCH 2/2] mt76: mt7915: fix rx fcs error count in testmode
Date: Tue, 8 Jun 2021 14:55:58 +0800	[thread overview]
Message-ID: <20210608065558.8117-2-shayne.chen@mediatek.com> (raw)
In-Reply-To: <20210608065558.8117-1-shayne.chen@mediatek.com>

FCS error packets are filtered by default and won't be reported to
driver, so that RX fcs error and PER in testmode always show zero.
Fix this issue by reading fcs error count from hw counter.

We did't fix this issue by disabling fcs error rx filter since it may
let HW suffer some SER errors.

Fixes: 5d8a83f09941 ("mt76: mt7915: implement testmode rx support")
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
---
 .../wireless/mediatek/mt76/mt7915/testmode.c  | 21 +++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c b/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
index f9d81e3..b220b33 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
@@ -464,10 +464,17 @@ mt7915_tm_set_tx_frames(struct mt7915_phy *phy, bool en)
 static void
 mt7915_tm_set_rx_frames(struct mt7915_phy *phy, bool en)
 {
-	if (en)
+	mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, false);
+
+	if (en) {
+		struct mt7915_dev *dev = phy->dev;
+
 		mt7915_tm_update_channel(phy);
 
-	mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, en);
+		/* read-clear */
+		mt76_rr(dev, MT_MIB_SDR3(phy != &dev->phy));
+		mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, en);
+	}
 }
 
 static int
@@ -690,7 +697,11 @@ static int
 mt7915_tm_dump_stats(struct mt76_phy *mphy, struct sk_buff *msg)
 {
 	struct mt7915_phy *phy = mphy->priv;
+	struct mt7915_dev *dev = phy->dev;
+	bool ext_phy = phy != &dev->phy;
+	enum mt76_rxq_id q;
 	void *rx, *rssi;
+	u16 fcs_err;
 	int i;
 
 	rx = nla_nest_start(msg, MT76_TM_STATS_ATTR_LAST_RX);
@@ -735,6 +746,12 @@ mt7915_tm_dump_stats(struct mt76_phy *mphy, struct sk_buff *msg)
 
 	nla_nest_end(msg, rx);
 
+	fcs_err = mt76_get_field(dev, MT_MIB_SDR3(ext_phy),
+				 MT_MIB_SDR3_FCS_ERR_MASK);
+	q = ext_phy ? MT_RXQ_EXT : MT_RXQ_MAIN;
+	mphy->test.rx_stats.packets[q] += fcs_err;
+	mphy->test.rx_stats.fcs_error[q] += fcs_err;
+
 	return 0;
 }
 
-- 
2.18.0
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  reply	other threads:[~2021-06-08  6:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08  6:55 [PATCH 1/2] mt76: testmode: move chip-specific stats dump before common stats Shayne Chen
2021-06-08  6:55 ` Shayne Chen
2021-06-08  6:55 ` Shayne Chen [this message]
2021-06-08  6:55   ` [PATCH 2/2] mt76: mt7915: fix rx fcs error count in testmode Shayne Chen

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