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[v2,4/6] ath9k: Expose tsf_adjustment in mac80211 tsf getters and setters.

Message ID 1467635845-32653-4-git-send-email-benjamin@sipsolutions.net (mailing list archive)
State Accepted
Commit 7fde51227aed97984bc3a8572b60939d393fc2cb
Delegated to: Kalle Valo
Headers show

Commit Message

Benjamin Berg July 4, 2016, 12:37 p.m. UTC 
From: Benjamin Berg <benjamin.berg@open-mesh.com>

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 <benjamin.berg@open-mesh.com>
---
 drivers/net/wireless/ath/ath9k/main.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

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);