2023-05-10 04:55:45

by Ryder Lee

[permalink] [raw]
Subject: [PATCH v3 3/6] wifi: mt76: mt7915: rework tx bytes counting when WED is active

From: Peter Chiu <[email protected]>

Concurrent binding/non-binding skbs could be handled anywhere which leads
to mixed byte counting, so switch to use PPDU TxS reporting regardless Tx
paths when WED is active.

Fixes: 43eaa3689507 ("wifi: mt76: add PPDU based TxS support for WED device")
Co-developed-by: Ryder Lee <[email protected]>
Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Peter Chiu <[email protected]>
---
.../wireless/mediatek/mt76/mt76_connac_mac.c | 2 --
.../net/wireless/mediatek/mt76/mt7915/init.c | 6 ++++
.../net/wireless/mediatek/mt76/mt7915/mmio.c | 30 ++-----------------
drivers/net/wireless/mediatek/mt76/tx.c | 6 ++++
4 files changed, 14 insertions(+), 30 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
index f6346a458978..3501f0503118 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
@@ -521,8 +521,6 @@ void mt76_connac2_mac_write_txwi(struct mt76_dev *dev, __le32 *txwi,
q_idx = wmm_idx * MT76_CONNAC_MAX_WMM_SETS +
mt76_connac_lmac_mapping(skb_get_queue_mapping(skb));

- /* counting non-offloading skbs */
- wcid->stats.tx_bytes += skb->len;
/* mt7915 WA only counts WED path */
if (is_mt7915(dev) && mtk_wed_device_active(&dev->mmio.wed))
wcid->stats.tx_packets++;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 8d6e09605dc4..30c552a5f920 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -499,6 +499,12 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band)
set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) |
FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3);
mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set);
+
+ /* MT_TXD5_TX_STATUS_HOST (MPDU format) has higher priority than
+ * MT_AGG_ACR_PPDU_TXS2H (PPDU format) even though ACR bit is set.
+ */
+ if (mtk_wed_device_active(&dev->mt76.mmio.wed))
+ mt76_set(dev, MT_AGG_ACR4(band), MT_AGG_ACR_PPDU_TXS2H);
}

static void
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index 45f3558bf31c..2fa059af23de 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
@@ -545,8 +545,6 @@ static u32 mt7915_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
static int mt7915_mmio_wed_offload_enable(struct mtk_wed_device *wed)
{
struct mt7915_dev *dev;
- struct mt7915_phy *phy;
- int ret;

dev = container_of(wed, struct mt7915_dev, mt76.mmio.wed);

@@ -554,43 +552,19 @@ static int mt7915_mmio_wed_offload_enable(struct mtk_wed_device *wed)
dev->mt76.token_size = wed->wlan.token_start;
spin_unlock_bh(&dev->mt76.token_lock);

- ret = wait_event_timeout(dev->mt76.tx_wait,
- !dev->mt76.wed_token_count, HZ);
- if (!ret)
- return -EAGAIN;
-
- phy = &dev->phy;
- mt76_set(dev, MT_AGG_ACR4(phy->mt76->band_idx), MT_AGG_ACR_PPDU_TXS2H);
-
- phy = dev->mt76.phys[MT_BAND1] ? dev->mt76.phys[MT_BAND1]->priv : NULL;
- if (phy)
- mt76_set(dev, MT_AGG_ACR4(phy->mt76->band_idx),
- MT_AGG_ACR_PPDU_TXS2H);
-
- return 0;
+ return !wait_event_timeout(dev->mt76.tx_wait,
+ !dev->mt76.wed_token_count, HZ);
}

static void mt7915_mmio_wed_offload_disable(struct mtk_wed_device *wed)
{
struct mt7915_dev *dev;
- struct mt7915_phy *phy;

dev = container_of(wed, struct mt7915_dev, mt76.mmio.wed);

spin_lock_bh(&dev->mt76.token_lock);
dev->mt76.token_size = MT7915_TOKEN_SIZE;
spin_unlock_bh(&dev->mt76.token_lock);
-
- /* MT_TXD5_TX_STATUS_HOST (MPDU format) has higher priority than
- * MT_AGG_ACR_PPDU_TXS2H (PPDU format) even though ACR bit is set.
- */
- phy = &dev->phy;
- mt76_clear(dev, MT_AGG_ACR4(phy->mt76->band_idx), MT_AGG_ACR_PPDU_TXS2H);
-
- phy = dev->mt76.phys[MT_BAND1] ? dev->mt76.phys[MT_BAND1]->priv : NULL;
- if (phy)
- mt76_clear(dev, MT_AGG_ACR4(phy->mt76->band_idx),
- MT_AGG_ACR_PPDU_TXS2H);
}

static void mt7915_mmio_wed_release_rx_buf(struct mtk_wed_device *wed)
diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 72b3ec715e47..99d395bd1bba 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -121,6 +121,7 @@ int
mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
struct sk_buff *skb)
{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt76_tx_cb *cb = mt76_tx_skb_cb(skb);
int pid;
@@ -133,6 +134,11 @@ mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
return MT_PACKET_ID_NO_ACK;

+ if (mtk_wed_device_active(&dev->mmio.wed) &&
+ ((info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) ||
+ ieee80211_is_data(hdr->frame_control)))
+ return MT_PACKET_ID_WED;
+
if (!(info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_CTL_RATE_CTRL_PROBE)))
return MT_PACKET_ID_NO_SKB;
--
2.18.0