package/kernel/mac80211/patches/315-ath9k-Expose-tsf_adjustment-in-mac80211-tsf-getters-.patch

   1 From: Benjamin Berg <benjamin.berg@open-mesh.com>
   2 Date: Mon, 4 Jul 2016 14:37:23 +0200
   3 Subject: [PATCH] ath9k: Expose tsf_adjustment in mac80211 tsf getters and
   4  setters.
   5
   6 The ath9k driver modifies the TSF for VIFs for the purpose of sending
   7 beacons in a staggered fashion. This patch exposes this VIF specific
   8 adjustment of the TSF value to mac80211. Without the change the TSF
   9 routines handle the hardware TSF value instead of the actual TSF value as
  10 seen on the air.
  11
  12 Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com>
  13 ---
  14
  15 --- a/drivers/net/wireless/ath/ath9k/main.c
  16 +++ b/drivers/net/wireless/ath/ath9k/main.c
  17 @@ -1835,6 +1835,7 @@ static u64 ath9k_get_tsf(struct ieee8021
  18                 tsf = sc->cur_chan->tsf_val +
  19                       ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, NULL);
  20         }
  21 +       tsf += le64_to_cpu(avp->tsf_adjust);
  22         ath9k_ps_restore(sc);
  23         mutex_unlock(&sc->mutex);
  24
  25 @@ -1850,6 +1851,7 @@ static void ath9k_set_tsf(struct ieee802
  26
  27         mutex_lock(&sc->mutex);
  28         ath9k_ps_wakeup(sc);
  29 +       tsf -= le64_to_cpu(avp->tsf_adjust);
  30         getrawmonotonic(&avp->chanctx->tsf_ts);
  31         if (sc->cur_chan == avp->chanctx)
  32                 ath9k_hw_settsf64(sc->sc_ah, tsf);