mt76: fix dfs state issue with 160 MHz channels

When operating on a mix of DFS and non-DFS channels, the driver only checks
the CAC status of the control channel. This causes beacons/tx to fail if the
control channel is on a non-DFS channel.
Fix this by calling cfg80211_reg_can_beacon to determine the DFS status of
all affected channels

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 9796419..372b94a 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -1658,7 +1658,7 @@ enum mt76_dfs_state mt76_phy_dfs_state(struct mt76_phy *phy)
                return MT_DFS_STATE_DISABLED;
        }
 
-       if (phy->chandef.chan->dfs_state != NL80211_DFS_AVAILABLE)
+       if (!cfg80211_reg_can_beacon(hw->wiphy, &phy->chandef, NL80211_IFTYPE_AP))
                return MT_DFS_STATE_CAC;
 
        return MT_DFS_STATE_ACTIVE;

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 120760e..e98c607 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -2151,10 +2151,12 @@ int mt7615_mcu_set_chan_info(struct mt7615_phy *phy, int cmd)
                .center_chan2 = ieee80211_frequency_to_channel(freq2),
        };
 
-       if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+       if (cmd == MCU_EXT_CMD(SET_RX_PATH))
+               req.switch_reason = CH_SWITCH_NORMAL;
+       else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
                req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
-       else if ((chandef->chan->flags & IEEE80211_CHAN_RADAR) &&
-                chandef->chan->dfs_state != NL80211_DFS_AVAILABLE)
+       else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
+                                         NL80211_IFTYPE_AP))
                req.switch_reason = CH_SWITCH_DFS;
        else
                req.switch_reason = CH_SWITCH_NORMAL;

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 8c01429..119f935 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2811,10 +2811,12 @@ int mt7915_mcu_set_chan_info(struct mt7915_phy *phy, int cmd)
        }
 #endif
 
-       if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+       if (cmd == MCU_EXT_CMD(SET_RX_PATH))
+               req.switch_reason = CH_SWITCH_NORMAL;
+       else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
                req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
-       else if (phy->mt76->hw->conf.radar_enabled &&
-                chandef->chan->dfs_state != NL80211_DFS_AVAILABLE)
+       else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
+                                         NL80211_IFTYPE_AP))
                req.switch_reason = CH_SWITCH_DFS;
        else
                req.switch_reason = CH_SWITCH_NORMAL;

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index 33a8368..e7adcba 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -863,10 +863,12 @@ int mt7921_mcu_set_chan_info(struct mt7921_phy *phy, int cmd)
        else
                req.channel_band = chandef->chan->band;
 
-       if (dev->mt76.hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+       if (cmd == MCU_EXT_CMD(SET_RX_PATH))
+               req.switch_reason = CH_SWITCH_NORMAL;
+       else if (dev->mt76.hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
                req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
-       else if ((chandef->chan->flags & IEEE80211_CHAN_RADAR) &&
-                chandef->chan->dfs_state != NL80211_DFS_AVAILABLE)
+       else if (!cfg80211_reg_can_beacon(dev->mt76.hw->wiphy, chandef,
+                                         NL80211_IFTYPE_AP))
                req.switch_reason = CH_SWITCH_DFS;
        else
                req.switch_reason = CH_SWITCH_NORMAL;