From: Benjamin Berg <[email protected]>

The ath9k driver modifies the TSF for VIFs for the purpose of sending
beacons in a staggered fashion. This patch exposes this VIF specific
adjustment of the TSF value to mac80211. Without the change the TSF
routines handle the hardware TSF value instead of the actual TSF value as
seen on the air.

Signed-off-by: Benjamin Berg <[email protected]>
---
 drivers/net/wireless/ath/ath9k/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/ath/ath9k/main.c 
b/drivers/net/wireless/ath/ath9k/main.c
index 375c2ac..f2ebc85 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1835,6 +1835,7 @@ static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct 
ieee80211_vif *vif)
                tsf = sc->cur_chan->tsf_val +
                      ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, NULL);
        }
+       tsf += le64_to_cpu(avp->tsf_adjust);
        ath9k_ps_restore(sc);
        mutex_unlock(&sc->mutex);
 
@@ -1850,6 +1851,7 @@ static void ath9k_set_tsf(struct ieee80211_hw *hw,
 
        mutex_lock(&sc->mutex);
        ath9k_ps_wakeup(sc);
+       tsf -= le64_to_cpu(avp->tsf_adjust);
        getrawmonotonic(&avp->chanctx->tsf_ts);
        if (sc->cur_chan == avp->chanctx)
                ath9k_hw_settsf64(sc->sc_ah, tsf);
-- 
2.8.1

--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to