From: Felix Fietkau nbd@nbd.name
[ Upstream commit aac86cebb4a09e3fa2c07589f79f7d0e07e8c9a4 ]
For some reason, mt7615 reacts badly to repeatedly enabling/disabling the radar detector without also switching the channel. This results in very bad throughput on DFS channels, because hw->conf.radar_enabled can get toggled a few times after CAC ends. Fix this by always leaving the DFS detector enabled on DFS channels and instead suppress unwanted detection events.
Fixes: 2c86f6752046 ("mt76: mt7615: fix/rewrite the dfs state handling logic") Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/mediatek/mt76/mt7615/mac.c | 7 ++++--- .../net/wireless/mediatek/mt76/mt7615/main.c | 21 ------------------- .../net/wireless/mediatek/mt76/mt7615/mcu.c | 3 +++ .../wireless/mediatek/mt76/mt7615/mt7615.h | 1 - 4 files changed, 7 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index bd687f7de628..9e832b27170f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -2282,6 +2282,7 @@ mt7615_dfs_init_radar_specs(struct mt7615_phy *phy)
int mt7615_dfs_init_radar_detector(struct mt7615_phy *phy) { + struct cfg80211_chan_def *chandef = &phy->mt76->chandef; struct mt7615_dev *dev = phy->dev; bool ext_phy = phy != &dev->phy; enum mt76_dfs_state dfs_state, prev_state; @@ -2292,13 +2293,13 @@ int mt7615_dfs_init_radar_detector(struct mt7615_phy *phy)
prev_state = phy->mt76->dfs_state; dfs_state = mt76_phy_dfs_state(phy->mt76); + if ((chandef->chan->flags & IEEE80211_CHAN_RADAR) && + dfs_state < MT_DFS_STATE_CAC) + dfs_state = MT_DFS_STATE_ACTIVE;
if (prev_state == dfs_state) return 0;
- if (prev_state == MT_DFS_STATE_UNKNOWN) - mt7615_dfs_stop_radar_detector(phy); - if (dfs_state == MT_DFS_STATE_DISABLED) goto stop;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c index 6b8e3e7ae4a2..36990637a8a2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -282,26 +282,6 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw, mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid); }
-static void mt7615_init_dfs_state(struct mt7615_phy *phy) -{ - struct mt76_phy *mphy = phy->mt76; - struct ieee80211_hw *hw = mphy->hw; - struct cfg80211_chan_def *chandef = &hw->conf.chandef; - - if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) - return; - - if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR) && - !(mphy->chandef.chan->flags & IEEE80211_CHAN_RADAR)) - return; - - if (mphy->chandef.chan->center_freq == chandef->chan->center_freq && - mphy->chandef.width == chandef->width) - return; - - phy->dfs_state = -1; -} - int mt7615_set_channel(struct mt7615_phy *phy) { struct mt7615_dev *dev = phy->dev; @@ -314,7 +294,6 @@ int mt7615_set_channel(struct mt7615_phy *phy)
set_bit(MT76_RESET, &phy->mt76->state);
- mt7615_init_dfs_state(phy); mt76_set_channel(phy->mt76);
if (is_mt7615(&dev->mt76) && dev->flash_eeprom) { diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c index 6f3efec58afe..7127d6007ae0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c @@ -403,6 +403,9 @@ mt7615_mcu_rx_radar_detected(struct mt7615_dev *dev, struct sk_buff *skb) if (r->band_idx && dev->mt76.phy2) mphy = dev->mt76.phy2;
+ if (mt76_phy_dfs_state(mphy) < MT_DFS_STATE_CAC) + return; + ieee80211_radar_detected(mphy->hw); dev->hw_pattern++; } diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h index 2e91f6a27d0f..082c73b571ae 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h @@ -177,7 +177,6 @@ struct mt7615_phy {
u8 chfreq; u8 rdd_state; - int dfs_state;
u32 rx_ampdu_ts; u32 ampdu_ref;