Based on system load and time needed by other calibration runs, the time between dev->mac_work runs can vary quite a bit. Calculate busy time based on the actual time difference in order to avoid potentially over-estimating busy time, which could lead to unnecessary tx blocking.
Signed-off-by: Felix Fietkau <[email protected]> --- drivers/net/wireless/mediatek/mt76/mt76x02.h | 1 + drivers/net/wireless/mediatek/mt76/mt76x02_mac.c | 11 +++++++++-- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02.h b/drivers/net/wireless/mediatek/mt76/mt76x02.h index 7e405297028f..3464b4ca2ea8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02.h @@ -117,6 +117,7 @@ struct mt76x02_dev { bool ed_monitor; u8 ed_trigger; u8 ed_silent; + ktime_t ed_time; }; extern struct ieee80211_rate mt76x02_rates[12]; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index aecf514bb89b..462ac030c08a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c @@ -922,6 +922,7 @@ void mt76x02_edcca_init(struct mt76x02_dev *dev, bool enable) /* clear previous CCA timer value */ mt76_rr(dev, MT_ED_CCA_TIMER); + dev->ed_time = ktime_get_boottime(); } EXPORT_SYMBOL_GPL(mt76x02_edcca_init); @@ -929,10 +930,16 @@ EXPORT_SYMBOL_GPL(mt76x02_edcca_init); #define MT_EDCCA_BLOCK_TH 2 static void mt76x02_edcca_check(struct mt76x02_dev *dev) { - u32 val, busy; + ktime_t cur_time; + u32 active, val, busy; + cur_time = ktime_get_boottime(); val = mt76_rr(dev, MT_ED_CCA_TIMER); - busy = (val * 100) / jiffies_to_usecs(MT_MAC_WORK_INTERVAL); + + active = ktime_to_us(ktime_sub(cur_time, dev->ed_time)); + dev->ed_time = cur_time; + + busy = (val * 100) / active; busy = min_t(u32, busy, 100); if (busy > MT_EDCCA_TH) { -- 2.17.0
