wifi: mt76: mt7915: accumulate mu-mimo ofdma muru stats

The stats are clear-on-read, which makes it very difficult for tools
to adequately deal with wrapped stats and with keeping good totals.

So, accumulate these values when they are read from the firmware/radio
and present totals to user-space.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76.h

@@ -918,6 +918,38 @@ struct mt76_mib_stats {
 
 	u32 tx_amsdu[8];
 	u32 tx_amsdu_cnt;
+
+	/* mcu_muru_stats */
+	u32 dl_cck_cnt;
+	u32 dl_ofdm_cnt;
+	u32 dl_htmix_cnt;
+	u32 dl_htgf_cnt;
+	u32 dl_vht_su_cnt;
+	u32 dl_vht_2mu_cnt;
+	u32 dl_vht_3mu_cnt;
+	u32 dl_vht_4mu_cnt;
+	u32 dl_he_su_cnt;
+	u32 dl_he_ext_su_cnt;
+	u32 dl_he_2ru_cnt;
+	u32 dl_he_2mu_cnt;
+	u32 dl_he_3ru_cnt;
+	u32 dl_he_3mu_cnt;
+	u32 dl_he_4ru_cnt;
+	u32 dl_he_4mu_cnt;
+	u32 dl_he_5to8ru_cnt;
+	u32 dl_he_9to16ru_cnt;
+	u32 dl_he_gtr16ru_cnt;
+
+	u32 ul_hetrig_su_cnt;
+	u32 ul_hetrig_2ru_cnt;
+	u32 ul_hetrig_3ru_cnt;
+	u32 ul_hetrig_4ru_cnt;
+	u32 ul_hetrig_5to8ru_cnt;
+	u32 ul_hetrig_9to16ru_cnt;
+	u32 ul_hetrig_gtr16ru_cnt;
+	u32 ul_hetrig_2mu_cnt;
+	u32 ul_hetrig_3mu_cnt;
+	u32 ul_hetrig_4mu_cnt;
 };
 
 struct mt76_power_limits {

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

@@ -251,7 +251,6 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 {
 	struct mt7915_phy *phy = file->private;
 	struct mt7915_dev *dev = phy->dev;
-	struct mt7915_mcu_muru_stats mu_stats = {};
 	static const char * const dl_non_he_type[] = {
 		"CCK", "OFDM", "HT MIX", "HT GF",
 		"VHT SU", "VHT 2MU", "VHT 3MU", "VHT 4MU"
@@ -275,7 +274,7 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	mutex_lock(&dev->mt76.mutex);
 
-	ret = mt7915_mcu_muru_debug_get(phy, &mu_stats);
+	ret = mt7915_mcu_muru_debug_get(phy);
 	if (ret)
 		goto exit;
 
@@ -285,14 +284,13 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 	for (i = 0; i < 5; i++)
 		seq_printf(file, "%8s | ", dl_non_he_type[i]);
 
-#define __dl_u32(s)     le32_to_cpu(mu_stats.dl.s)
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | %8u | %8u | ",
-		   __dl_u32(cck_cnt),
-		   __dl_u32(ofdm_cnt),
-		   __dl_u32(htmix_cnt),
-		   __dl_u32(htgf_cnt),
-		   __dl_u32(vht_su_cnt));
+		   phy->mib.dl_cck_cnt,
+		   phy->mib.dl_ofdm_cnt,
+		   phy->mib.dl_htmix_cnt,
+		   phy->mib.dl_htgf_cnt,
+		   phy->mib.dl_vht_su_cnt);
 
 	seq_puts(file, "\nDownlink MU-MIMO\nData Type:  ");
 
@@ -301,23 +299,23 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | ",
-		   __dl_u32(vht_2mu_cnt),
-		   __dl_u32(vht_3mu_cnt),
-		   __dl_u32(vht_4mu_cnt));
+		   phy->mib.dl_vht_2mu_cnt,
+		   phy->mib.dl_vht_3mu_cnt,
+		   phy->mib.dl_vht_4mu_cnt);
 
-	sub_total_cnt = __dl_u32(vht_2mu_cnt) +
-		__dl_u32(vht_3mu_cnt) +
-		__dl_u32(vht_4mu_cnt);
+	sub_total_cnt = phy->mib.dl_vht_2mu_cnt +
+			phy->mib.dl_vht_3mu_cnt +
+			phy->mib.dl_vht_4mu_cnt;
 
 	seq_printf(file, "\nTotal non-HE MU-MIMO DL PPDU count: %lld",
 		   sub_total_cnt);
 
 	total_ppdu_cnt = sub_total_cnt +
-		__dl_u32(cck_cnt) +
-		__dl_u32(ofdm_cnt) +
-		__dl_u32(htmix_cnt) +
-		__dl_u32(htgf_cnt) +
-		__dl_u32(vht_su_cnt);
+			 phy->mib.dl_cck_cnt +
+			 phy->mib.dl_ofdm_cnt +
+			 phy->mib.dl_htmix_cnt +
+			 phy->mib.dl_htgf_cnt +
+			 phy->mib.dl_vht_su_cnt;
 
 	seq_printf(file, "\nAll non-HE DL PPDU count: %lld", total_ppdu_cnt);
 
@@ -329,8 +327,7 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | ",
-		   __dl_u32(he_su_cnt),
-		   __dl_u32(he_ext_su_cnt));
+		   phy->mib.dl_he_su_cnt, phy->mib.dl_he_ext_su_cnt);
 
 	seq_puts(file, "\nDownlink MU-MIMO\nData Type:  ");
 
@@ -339,9 +336,8 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | ",
-		   __dl_u32(he_2mu_cnt),
-		   __dl_u32(he_3mu_cnt),
-		   __dl_u32(he_4mu_cnt));
+		   phy->mib.dl_he_2mu_cnt, phy->mib.dl_he_3mu_cnt,
+		   phy->mib.dl_he_4mu_cnt);
 
 	seq_puts(file, "\nDownlink OFDMA\nData Type:  ");
 
@@ -350,37 +346,35 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | %8u | %9u | %8u | ",
-		   __dl_u32(he_2ru_cnt),
-		   __dl_u32(he_3ru_cnt),
-		   __dl_u32(he_4ru_cnt),
-		   __dl_u32(he_5to8ru_cnt),
-		   __dl_u32(he_9to16ru_cnt),
-		   __dl_u32(he_gtr16ru_cnt));
-
-	sub_total_cnt = __dl_u32(he_2mu_cnt) +
-		__dl_u32(he_3mu_cnt) +
-		__dl_u32(he_4mu_cnt);
+		   phy->mib.dl_he_2ru_cnt,
+		   phy->mib.dl_he_3ru_cnt,
+		   phy->mib.dl_he_4ru_cnt,
+		   phy->mib.dl_he_5to8ru_cnt,
+		   phy->mib.dl_he_9to16ru_cnt,
+		   phy->mib.dl_he_gtr16ru_cnt);
+
+	sub_total_cnt = phy->mib.dl_he_2mu_cnt +
+			phy->mib.dl_he_3mu_cnt +
+			phy->mib.dl_he_4mu_cnt;
 	total_ppdu_cnt = sub_total_cnt;
 
 	seq_printf(file, "\nTotal HE MU-MIMO DL PPDU count: %lld",
 		   sub_total_cnt);
 
-	sub_total_cnt = __dl_u32(he_2ru_cnt) +
-		__dl_u32(he_3ru_cnt) +
-		__dl_u32(he_4ru_cnt) +
-		__dl_u32(he_5to8ru_cnt) +
-		__dl_u32(he_9to16ru_cnt) +
-		__dl_u32(he_gtr16ru_cnt);
+	sub_total_cnt = phy->mib.dl_he_2ru_cnt +
+			phy->mib.dl_he_3ru_cnt +
+			phy->mib.dl_he_4ru_cnt +
+			phy->mib.dl_he_5to8ru_cnt +
+			phy->mib.dl_he_9to16ru_cnt +
+			phy->mib.dl_he_gtr16ru_cnt;
 	total_ppdu_cnt += sub_total_cnt;
 
 	seq_printf(file, "\nTotal HE OFDMA DL PPDU count: %lld",
 		   sub_total_cnt);
 
-	total_ppdu_cnt += __dl_u32(he_su_cnt) +
-		__dl_u32(he_ext_su_cnt);
+	total_ppdu_cnt += phy->mib.dl_he_su_cnt + phy->mib.dl_he_ext_su_cnt;
 
 	seq_printf(file, "\nAll HE DL PPDU count: %lld", total_ppdu_cnt);
-#undef __dl_u32
 
 	/* HE Uplink */
 	seq_puts(file, "\n\nUplink");
@@ -389,12 +383,11 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 	for (i = 0; i < 3; i++)
 		seq_printf(file, "%8s | ", ul_he_type[i]);
 
-#define __ul_u32(s)     le32_to_cpu(mu_stats.ul.s)
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | ",
-		   __ul_u32(hetrig_2mu_cnt),
-		   __ul_u32(hetrig_3mu_cnt),
-		   __ul_u32(hetrig_4mu_cnt));
+		   phy->mib.ul_hetrig_2mu_cnt,
+		   phy->mib.ul_hetrig_3mu_cnt,
+		   phy->mib.ul_hetrig_4mu_cnt);
 
 	seq_puts(file, "\nTrigger-based Uplink OFDMA\nData Type:  ");
 
@@ -403,37 +396,36 @@ static int mt7915_muru_stats_show(struct seq_file *file, void *data)
 
 	seq_puts(file, "\nTotal Count:");
 	seq_printf(file, "%8u | %8u | %8u | %8u | %8u | %9u |  %7u | ",
-		   __ul_u32(hetrig_su_cnt),
-		   __ul_u32(hetrig_2ru_cnt),
-		   __ul_u32(hetrig_3ru_cnt),
-		   __ul_u32(hetrig_4ru_cnt),
-		   __ul_u32(hetrig_5to8ru_cnt),
-		   __ul_u32(hetrig_9to16ru_cnt),
-		   __ul_u32(hetrig_gtr16ru_cnt));
-
-	sub_total_cnt = __ul_u32(hetrig_2mu_cnt) +
-		__ul_u32(hetrig_3mu_cnt) +
-		__ul_u32(hetrig_4mu_cnt);
+		   phy->mib.ul_hetrig_su_cnt,
+		   phy->mib.ul_hetrig_2ru_cnt,
+		   phy->mib.ul_hetrig_3ru_cnt,
+		   phy->mib.ul_hetrig_4ru_cnt,
+		   phy->mib.ul_hetrig_5to8ru_cnt,
+		   phy->mib.ul_hetrig_9to16ru_cnt,
+		   phy->mib.ul_hetrig_gtr16ru_cnt);
+
+	sub_total_cnt = phy->mib.ul_hetrig_2mu_cnt +
+			phy->mib.ul_hetrig_3mu_cnt +
+			phy->mib.ul_hetrig_4mu_cnt;
 	total_ppdu_cnt = sub_total_cnt;
 
 	seq_printf(file, "\nTotal HE MU-MIMO UL TB PPDU count: %lld",
 		   sub_total_cnt);
 
-	sub_total_cnt = __ul_u32(hetrig_2ru_cnt) +
-		__ul_u32(hetrig_3ru_cnt) +
-		__ul_u32(hetrig_4ru_cnt) +
-		__ul_u32(hetrig_5to8ru_cnt) +
-		__ul_u32(hetrig_9to16ru_cnt) +
-		__ul_u32(hetrig_gtr16ru_cnt);
+	sub_total_cnt = phy->mib.ul_hetrig_2ru_cnt +
+			phy->mib.ul_hetrig_3ru_cnt +
+			phy->mib.ul_hetrig_4ru_cnt +
+			phy->mib.ul_hetrig_5to8ru_cnt +
+			phy->mib.ul_hetrig_9to16ru_cnt +
+			phy->mib.ul_hetrig_gtr16ru_cnt;
 	total_ppdu_cnt += sub_total_cnt;
 
 	seq_printf(file, "\nTotal HE OFDMA UL TB PPDU count: %lld",
 		   sub_total_cnt);
 
-	total_ppdu_cnt += __ul_u32(hetrig_su_cnt);
+	total_ppdu_cnt += phy->mib.ul_hetrig_su_cnt;
 
 	seq_printf(file, "\nAll HE UL TB PPDU count: %lld\n", total_ppdu_cnt);
-#undef __ul_u32
 
 exit:
 	mutex_unlock(&dev->mt76.mutex);

drivers/net/wireless/mediatek/mt76/mt7915/mac.c

@@ -2072,6 +2072,9 @@ void mt7915_mac_work(struct work_struct *work)
 
 		mt7915_mac_update_stats(phy);
 		mt7915_mac_severe_check(phy);
+
+		if (phy->dev->muru_debug)
+			mt7915_mcu_muru_debug_get(phy);
 	}
 
 	mutex_unlock(&mphy->dev->mutex);

drivers/net/wireless/mediatek/mt76/mt7915/main.c

@@ -1254,6 +1254,38 @@ static const char mt7915_gstrings_stats[][ETH_GSTRING_LEN] = {
 	"rx_vec_queue_overflow_drop_cnt",
 	"rx_ba_cnt",
 
+	/* muru mu-mimo and ofdma related stats */
+	"dl_cck_cnt",
+	"dl_ofdm_cnt",
+	"dl_htmix_cnt",
+	"dl_htgf_cnt",
+	"dl_vht_su_cnt",
+	"dl_vht_2mu_cnt",
+	"dl_vht_3mu_cnt",
+	"dl_vht_4mu_cnt",
+	"dl_he_su_cnt",
+	"dl_he_ext_su_cnt",
+	"dl_he_2ru_cnt",
+	"dl_he_2mu_cnt",
+	"dl_he_3ru_cnt",
+	"dl_he_3mu_cnt",
+	"dl_he_4ru_cnt",
+	"dl_he_4mu_cnt",
+	"dl_he_5to8ru_cnt",
+	"dl_he_9to16ru_cnt",
+	"dl_he_gtr16ru_cnt",
+
+	"ul_hetrig_su_cnt",
+	"ul_hetrig_2ru_cnt",
+	"ul_hetrig_3ru_cnt",
+	"ul_hetrig_4ru_cnt",
+	"ul_hetrig_5to8ru_cnt",
+	"ul_hetrig_9to16ru_cnt",
+	"ul_hetrig_gtr16ru_cnt",
+	"ul_hetrig_2mu_cnt",
+	"ul_hetrig_3mu_cnt",
+	"ul_hetrig_4mu_cnt",
+
 	/* per vif counters */
 	"v_tx_mode_cck",
 	"v_tx_mode_ofdm",
@@ -1408,6 +1440,37 @@ void mt7915_get_et_stats(struct ieee80211_hw *hw,
 	data[ei++] = mib->rx_vec_queue_overflow_drop_cnt;
 	data[ei++] = mib->rx_ba_cnt;
 
+	data[ei++] = mib->dl_cck_cnt;
+	data[ei++] = mib->dl_ofdm_cnt;
+	data[ei++] = mib->dl_htmix_cnt;
+	data[ei++] = mib->dl_htgf_cnt;
+	data[ei++] = mib->dl_vht_su_cnt;
+	data[ei++] = mib->dl_vht_2mu_cnt;
+	data[ei++] = mib->dl_vht_3mu_cnt;
+	data[ei++] = mib->dl_vht_4mu_cnt;
+	data[ei++] = mib->dl_he_su_cnt;
+	data[ei++] = mib->dl_he_ext_su_cnt;
+	data[ei++] = mib->dl_he_2ru_cnt;
+	data[ei++] = mib->dl_he_2mu_cnt;
+	data[ei++] = mib->dl_he_3ru_cnt;
+	data[ei++] = mib->dl_he_3mu_cnt;
+	data[ei++] = mib->dl_he_4ru_cnt;
+	data[ei++] = mib->dl_he_4mu_cnt;
+	data[ei++] = mib->dl_he_5to8ru_cnt;
+	data[ei++] = mib->dl_he_9to16ru_cnt;
+	data[ei++] = mib->dl_he_gtr16ru_cnt;
+
+	data[ei++] = mib->ul_hetrig_su_cnt;
+	data[ei++] = mib->ul_hetrig_2ru_cnt;
+	data[ei++] = mib->ul_hetrig_3ru_cnt;
+	data[ei++] = mib->ul_hetrig_4ru_cnt;
+	data[ei++] = mib->ul_hetrig_5to8ru_cnt;
+	data[ei++] = mib->ul_hetrig_9to16ru_cnt;
+	data[ei++] = mib->ul_hetrig_gtr16ru_cnt;
+	data[ei++] = mib->ul_hetrig_2mu_cnt;
+	data[ei++] = mib->ul_hetrig_3mu_cnt;
+	data[ei++] = mib->ul_hetrig_4mu_cnt;
+
 	/* Add values for all stations owned by this vif */
 	wi.initial_stat_idx = ei;
 	ieee80211_iterate_stations_atomic(hw, mt7915_ethtool_worker, &wi);

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

@@ -2119,12 +2119,11 @@ int mt7915_mcu_muru_debug_set(struct mt7915_dev *dev, bool enabled)
 				sizeof(data), false);
 }
 
-int mt7915_mcu_muru_debug_get(struct mt7915_phy *phy, void *ms)
+int mt7915_mcu_muru_debug_get(struct mt7915_phy *phy)
 {
 	struct mt7915_dev *dev = phy->dev;
 	struct sk_buff *skb;
-	struct mt7915_mcu_muru_stats *mu_stats =
-				(struct mt7915_mcu_muru_stats *)ms;
+	struct mt7915_mcu_muru_stats *mu_stats;
 	int ret;
 
 	struct {
@@ -2140,7 +2139,43 @@ int mt7915_mcu_muru_debug_get(struct mt7915_phy *phy, void *ms)
 	if (ret)
 		return ret;
 
-	memcpy(mu_stats, skb->data, sizeof(struct mt7915_mcu_muru_stats));
+	mu_stats = (struct mt7915_mcu_muru_stats *)(skb->data);
+
+	/* accumulate stats, these are clear-on-read */
+#define __dl_u32(s)	 phy->mib.dl_##s += le32_to_cpu(mu_stats->dl.s)
+#define __ul_u32(s)	 phy->mib.ul_##s += le32_to_cpu(mu_stats->ul.s)
+	__dl_u32(cck_cnt);
+	__dl_u32(ofdm_cnt);
+	__dl_u32(htmix_cnt);
+	__dl_u32(htgf_cnt);
+	__dl_u32(vht_su_cnt);
+	__dl_u32(vht_2mu_cnt);
+	__dl_u32(vht_3mu_cnt);
+	__dl_u32(vht_4mu_cnt);
+	__dl_u32(he_su_cnt);
+	__dl_u32(he_2ru_cnt);
+	__dl_u32(he_2mu_cnt);
+	__dl_u32(he_3ru_cnt);
+	__dl_u32(he_3mu_cnt);
+	__dl_u32(he_4ru_cnt);
+	__dl_u32(he_4mu_cnt);
+	__dl_u32(he_5to8ru_cnt);
+	__dl_u32(he_9to16ru_cnt);
+	__dl_u32(he_gtr16ru_cnt);
+
+	__ul_u32(hetrig_su_cnt);
+	__ul_u32(hetrig_2ru_cnt);
+	__ul_u32(hetrig_3ru_cnt);
+	__ul_u32(hetrig_4ru_cnt);
+	__ul_u32(hetrig_5to8ru_cnt);
+	__ul_u32(hetrig_9to16ru_cnt);
+	__ul_u32(hetrig_gtr16ru_cnt);
+	__ul_u32(hetrig_2mu_cnt);
+	__ul_u32(hetrig_3mu_cnt);
+	__ul_u32(hetrig_4mu_cnt);
+#undef __dl_u32
+#undef __ul_u32
+
 	dev_kfree_skb(skb);
 
 	return 0;

drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h

@@ -569,7 +569,7 @@ void mt7915_set_stream_he_caps(struct mt7915_phy *phy);
 void mt7915_set_stream_vht_txbf_caps(struct mt7915_phy *phy);
 void mt7915_update_channel(struct mt76_phy *mphy);
 int mt7915_mcu_muru_debug_set(struct mt7915_dev *dev, bool enable);
-int mt7915_mcu_muru_debug_get(struct mt7915_phy *phy, void *ms);
+int mt7915_mcu_muru_debug_get(struct mt7915_phy *phy);
 int mt7915_mcu_wed_enable_rx_stats(struct mt7915_dev *dev);
 int mt7915_init_debugfs(struct mt7915_phy *phy);
 void mt7915_debugfs_rx_fw_monitor(struct mt7915_dev *dev, const void *data, int len);