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mt76: mt7615: do not always reset the dfs state setting the channel

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mac80211/hostapd runs mt7615_set_channel with the same channel
parameters sending multiple rdd commands overwriting the previous ones.
This behaviour is causing tpt issues on dfs channels.
Fix the issue checking new channel freq/width with the running one.

Fixes: 5dabdf71e94e ("mt76: mt7615: add multiple wiphy support to the dfs support code")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2020-04-03 21:01:56 +02:00 committed by Felix Fietkau
parent 044883e37d
commit fdb786cce0
1 changed files with 20 additions and 1 deletions
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21
drivers/net/wireless/mediatek/mt76/mt7615/main.c
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@ -220,6 +220,25 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
spin_unlock_bh(&dev->sta_poll_lock);
}
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))
return;
if (mphy->chandef.chan->center_freq == chandef->chan->center_freq &&
mphy->chandef.width == chandef->width)
return;
phy->dfs_state = -1;
}
static int mt7615_set_channel(struct mt7615_phy *phy)
{
struct mt7615_dev *dev = phy->dev;
@ -231,7 +250,7 @@ static int mt7615_set_channel(struct mt7615_phy *phy)
mutex_lock(&dev->mt76.mutex);
set_bit(MT76_RESET, &phy->mt76->state);
phy->dfs_state = -1;
mt7615_init_dfs_state(phy);
mt76_set_channel(phy->mt76);
ret = mt7615_mcu_set_chan_info(phy, MCU_EXT_CMD_CHANNEL_SWITCH);