[PATCH 1/5] mt76: only stop tx queues on offchannel, not during the entire scan

[Felix Fietkau]

During scans, mac80211 frequently switches back to the home channel to
minimize interruption of ongoing traffic. Keep regular tx queues active
during that time.

Signed-off-by: Felix Fietkau <n...@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mac80211.c | 5 +++++
 drivers/net/wireless/mediatek/mt76/mt76.h     | 1 +
 drivers/net/wireless/mediatek/mt76/tx.c       | 4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c 
b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 915e61733131..d862e5efd094 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -366,6 +366,11 @@ void mt76_set_channel(struct mt76_dev *dev)
        struct mt76_channel_state *state;
        bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
 
+       if (offchannel)
+               set_bit(MT76_OFFCHANNEL, &dev->state);
+       else
+               clear_bit(MT76_OFFCHANNEL, &dev->state);
+
        if (dev->drv->update_survey)
                dev->drv->update_survey(dev);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h 
b/drivers/net/wireless/mediatek/mt76/mt76.h
index a74e6eef51e9..2d098fac6147 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -189,6 +189,7 @@ enum {
        MT76_STATE_RUNNING,
        MT76_SCANNING,
        MT76_RESET,
+       MT76_OFFCHANNEL,
 };
 
 struct mt76_hw_cap {
diff --git a/drivers/net/wireless/mediatek/mt76/tx.c 
b/drivers/net/wireless/mediatek/mt76/tx.c
index 7ecd2d7c5db4..e96956710fb2 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -332,7 +332,7 @@ mt76_txq_send_burst(struct mt76_dev *dev, struct mt76_queue 
*hwq,
                if (probe)
                        break;
 
-               if (test_bit(MT76_SCANNING, &dev->state) ||
+               if (test_bit(MT76_OFFCHANNEL, &dev->state) ||
                    test_bit(MT76_RESET, &dev->state))
                        return -EBUSY;
 
@@ -385,7 +385,7 @@ mt76_txq_schedule_list(struct mt76_dev *dev, struct 
mt76_queue *hwq)
                bool empty = false;
                int cur;
 
-               if (test_bit(MT76_SCANNING, &dev->state) ||
+               if (test_bit(MT76_OFFCHANNEL, &dev->state) ||
                    test_bit(MT76_RESET, &dev->state))
                        return -EBUSY;
 
-- 
2.17.0