[PATCH v2 1/3] wifi: mt76: mt7915: rework tx packets counting when WED is active
Ryder Lee
ryder.lee at mediatek.com
Tue Apr 25 11:32:13 PDT 2023
From: Peter Chiu <chui-hao.chiu at mediatek.com>
PPDU TxS can only report MPDU count whereas mac80211 requires MSDU scale
(NL80211_STA_INFO_TX_PACKETS), so switch to get MSDU counts from WA
statistic.
Note that mt7915 WA firmware only counts tx_packet for WED path, so driver
needs to take care of host path additionally.
Fixes: 43eaa3689507 ("wifi: mt76: add PPDU based TxS support for WED device")
Co-developed-by: Ryder Lee <ryder.lee at mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu at mediatek.com>
---
change since v2
- split to small patch mt7921 crashes
- swap wcid->stats.tx_packets check condition to avoid mt7921 crash
---
drivers/net/wireless/mediatek/mt76/mt76.h | 2 +-
.../wireless/mediatek/mt76/mt76_connac_mac.c | 6 +-
.../wireless/mediatek/mt76/mt76_connac_mcu.h | 1 +
.../net/wireless/mediatek/mt76/mt7915/main.c | 6 +-
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 74 +++++++++++++++++--
.../wireless/mediatek/mt76/mt7915/mt7915.h | 1 +
6 files changed, 77 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 6b07b8fafec2..0e9f4197213a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -277,7 +277,7 @@ struct mt76_sta_stats {
u64 tx_mcs[16]; /* mcs idx */
u64 tx_bytes;
/* WED TX */
- u32 tx_packets;
+ u32 tx_packets; /* unit: MSDU */
u32 tx_retries;
u32 tx_failed;
/* WED RX */
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
index d39a3cc5e381..f2237ae7c4d5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
@@ -523,7 +523,9 @@ void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
/* counting non-offloading skbs */
wcid->stats.tx_bytes += skb->len;
- wcid->stats.tx_packets++;
+ /* mt7915 WA only counts WED path */
+ if (is_mt7915(dev) && mtk_wed_device_active(&dev->mmio.wed))
+ wcid->stats.tx_packets++;
}
val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + sz_txd) |
@@ -610,8 +612,6 @@ bool mt76_connac2_mac_fill_txs(struct mt76_dev *dev, struct mt76_wcid *wcid,
stats->tx_bytes +=
le32_get_bits(txs_data[5], MT_TXS5_MPDU_TX_BYTE) -
le32_get_bits(txs_data[7], MT_TXS7_MPDU_RETRY_BYTE);
- stats->tx_packets +=
- le32_get_bits(txs_data[5], MT_TXS5_MPDU_TX_CNT);
stats->tx_failed +=
le32_get_bits(txs_data[6], MT_TXS6_MPDU_FAIL_CNT);
stats->tx_retries +=
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index ca1ce97a6d2f..7a52b68491b6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -998,6 +998,7 @@ enum {
MCU_EXT_EVENT_ASSERT_DUMP = 0x23,
MCU_EXT_EVENT_RDD_REPORT = 0x3a,
MCU_EXT_EVENT_CSA_NOTIFY = 0x4f,
+ MCU_EXT_EVENT_WA_TX_STAT = 0x74,
MCU_EXT_EVENT_BCC_NOTIFY = 0x75,
MCU_EXT_EVENT_MURU_CTRL = 0x9f,
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 61157248d742..b306a4fae1fc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -1043,8 +1043,10 @@ static void mt7915_sta_statistics(struct ieee80211_hw *hw,
sinfo->tx_bytes = msta->wcid.stats.tx_bytes;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64);
- sinfo->tx_packets = msta->wcid.stats.tx_packets;
- sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS);
+ if (!mt7915_mcu_wed_wa_tx_stats(phy->dev, msta->wcid.idx)) {
+ sinfo->tx_packets = msta->wcid.stats.tx_packets;
+ sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS);
+ }
if (mtk_wed_get_rx_capa(&phy->dev->mt76.mmio.wed)) {
sinfo->rx_bytes = msta->wcid.stats.rx_bytes;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 9fcb22fa1f97..5916dcaa8c7e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -164,7 +164,9 @@ mt7915_mcu_parse_response(struct mt76_dev *mdev, int cmd,
}
rxd = (struct mt76_connac2_mcu_rxd *)skb->data;
- if (seq != rxd->seq)
+ if (seq != rxd->seq &&
+ !(rxd->eid == MCU_CMD_EXT_CID &&
+ rxd->ext_eid == MCU_EXT_EVENT_WA_TX_STAT))
return -EAGAIN;
if (cmd == MCU_CMD(PATCH_SEM_CONTROL)) {
@@ -395,12 +397,14 @@ void mt7915_mcu_rx_event(struct mt7915_dev *dev, struct sk_buff *skb)
struct mt76_connac2_mcu_rxd *rxd;
rxd = (struct mt76_connac2_mcu_rxd *)skb->data;
- if (rxd->ext_eid == MCU_EXT_EVENT_THERMAL_PROTECT ||
- rxd->ext_eid == MCU_EXT_EVENT_FW_LOG_2_HOST ||
- rxd->ext_eid == MCU_EXT_EVENT_ASSERT_DUMP ||
- rxd->ext_eid == MCU_EXT_EVENT_PS_SYNC ||
- rxd->ext_eid == MCU_EXT_EVENT_BCC_NOTIFY ||
- !rxd->seq)
+ if ((rxd->ext_eid == MCU_EXT_EVENT_THERMAL_PROTECT ||
+ rxd->ext_eid == MCU_EXT_EVENT_FW_LOG_2_HOST ||
+ rxd->ext_eid == MCU_EXT_EVENT_ASSERT_DUMP ||
+ rxd->ext_eid == MCU_EXT_EVENT_PS_SYNC ||
+ rxd->ext_eid == MCU_EXT_EVENT_BCC_NOTIFY ||
+ !rxd->seq) &&
+ !(rxd->eid == MCU_CMD_EXT_CID &&
+ rxd->ext_eid == MCU_EXT_EVENT_WA_TX_STAT))
mt7915_mcu_rx_unsolicited_event(dev, skb);
else
mt76_mcu_rx_event(&dev->mt76, skb);
@@ -3733,6 +3737,62 @@ int mt7915_mcu_twt_agrt_update(struct mt7915_dev *dev,
&req, sizeof(req), true);
}
+int mt7915_mcu_wed_wa_tx_stats(struct mt7915_dev *dev, u16 wlan_idx)
+{
+ struct {
+ __le32 cmd;
+ __le32 num;
+ __le32 __rsv;
+ __le16 wlan_idx;
+ } req = {
+ .cmd = cpu_to_le32(0x15),
+ .num = cpu_to_le32(1),
+ .wlan_idx = cpu_to_le16(wlan_idx),
+ };
+ struct mt7915_mcu_wa_tx_stat {
+ __le16 wlan_idx;
+ u8 __rsv[2];
+
+ /* tx_bytes is deprecated since WA byte counter uses u32,
+ * which easily leads to overflow.
+ */
+ __le32 tx_bytes;
+ __le32 tx_packets;
+ } *res;
+ struct mt76_wcid *wcid;
+ struct sk_buff *skb;
+ int ret;
+
+ ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_WA_PARAM_CMD(QUERY),
+ &req, sizeof(req), true, &skb);
+ if (ret)
+ return ret;
+
+ if (!is_mt7915(&dev->mt76))
+ skb_pull(skb, 4);
+
+ res = (struct mt7915_mcu_wa_tx_stat *)skb->data;
+
+ if (le16_to_cpu(res->wlan_idx) != wlan_idx) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ rcu_read_lock();
+
+ wcid = rcu_dereference(dev->mt76.wcid[wlan_idx]);
+ if (wcid)
+ wcid->stats.tx_packets += le32_to_cpu(res->tx_packets);
+ else
+ ret = -EINVAL;
+
+ rcu_read_unlock();
+out:
+ dev_kfree_skb(skb);
+
+ return ret;
+}
+
int mt7915_mcu_rf_regval(struct mt7915_dev *dev, u32 regidx, u32 *val, bool set)
{
struct {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index b3ead3530740..3053f4abf7db 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -539,6 +539,7 @@ int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct rate_info *rate);
int mt7915_mcu_rdd_background_enable(struct mt7915_phy *phy,
struct cfg80211_chan_def *chandef);
+int mt7915_mcu_wed_wa_tx_stats(struct mt7915_dev *dev, u16 wcid);
int mt7915_mcu_rf_regval(struct mt7915_dev *dev, u32 regidx, u32 *val, bool set);
int mt7915_mcu_wa_cmd(struct mt7915_dev *dev, int cmd, u32 a1, u32 a2, u32 a3);
int mt7915_mcu_fw_log_2_host(struct mt7915_dev *dev, u8 type, u8 ctrl);
--
2.18.0
More information about the Linux-mediatek
mailing list