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author | Felix Fietkau <nbd@nbd.name> | 2016-07-05 10:45:17 +0200 |
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committer | Felix Fietkau <nbd@nbd.name> | 2016-07-05 10:45:17 +0200 |
commit | 92d856f50a71d0376e491644894507458bc26050 (patch) | |
tree | 78191f330ece4bd2412b327135fb43a751af8aa0 /package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch | |
parent | 71753a8286dcb4dedbb6d4792b0fd5dd305c3338 (diff) | |
download | upstream-92d856f50a71d0376e491644894507458bc26050.tar.gz upstream-92d856f50a71d0376e491644894507458bc26050.tar.bz2 upstream-92d856f50a71d0376e491644894507458bc26050.zip |
ath9k: add beacon related stability fixes
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch')
-rw-r--r-- | package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch b/package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch new file mode 100644 index 0000000000..ef0afbea9c --- /dev/null +++ b/package/kernel/mac80211/patches/313-ath9k-Handle-channel-context-in-get_-set_-reset_tsf.patch @@ -0,0 +1,70 @@ +From: Benjamin Berg <benjamin.berg@open-mesh.com> +Date: Mon, 4 Jul 2016 14:37:21 +0200 +Subject: [PATCH] ath9k: Handle channel context in get_/set_/reset_tsf + +The ath9k TSF handling routines need to be aware of the channel context that +is being modified. With this change the TSF related values that are stored +in each channel context will be correctly tracked and the harware will only +be updated if the modified context is currently the active one. + +Without this change the TSF modifications done using these routines would +for example be lost during a hardware reset as done by ath_complete_reset. + +Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com> +--- + +--- a/drivers/net/wireless/ath/ath9k/main.c ++++ b/drivers/net/wireless/ath/ath9k/main.c +@@ -1823,11 +1823,18 @@ static void ath9k_bss_info_changed(struc + static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) + { + struct ath_softc *sc = hw->priv; ++ struct ath_vif *avp = (void *)vif->drv_priv; + u64 tsf; + + mutex_lock(&sc->mutex); + ath9k_ps_wakeup(sc); +- tsf = ath9k_hw_gettsf64(sc->sc_ah); ++ /* Get current TSF either from HW or kernel time. */ ++ if (sc->cur_chan == avp->chanctx) { ++ tsf = ath9k_hw_gettsf64(sc->sc_ah); ++ } else { ++ tsf = sc->cur_chan->tsf_val + ++ ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, NULL); ++ } + ath9k_ps_restore(sc); + mutex_unlock(&sc->mutex); + +@@ -1839,10 +1846,14 @@ static void ath9k_set_tsf(struct ieee802 + u64 tsf) + { + struct ath_softc *sc = hw->priv; ++ struct ath_vif *avp = (void *)vif->drv_priv; + + mutex_lock(&sc->mutex); + ath9k_ps_wakeup(sc); +- ath9k_hw_settsf64(sc->sc_ah, tsf); ++ getrawmonotonic(&avp->chanctx->tsf_ts); ++ if (sc->cur_chan == avp->chanctx) ++ ath9k_hw_settsf64(sc->sc_ah, tsf); ++ avp->chanctx->tsf_val = tsf; + ath9k_ps_restore(sc); + mutex_unlock(&sc->mutex); + } +@@ -1850,11 +1861,15 @@ static void ath9k_set_tsf(struct ieee802 + static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) + { + struct ath_softc *sc = hw->priv; ++ struct ath_vif *avp = (void *)vif->drv_priv; + + mutex_lock(&sc->mutex); + + ath9k_ps_wakeup(sc); +- ath9k_hw_reset_tsf(sc->sc_ah); ++ getrawmonotonic(&avp->chanctx->tsf_ts); ++ if (sc->cur_chan == avp->chanctx) ++ ath9k_hw_reset_tsf(sc->sc_ah); ++ avp->chanctx->tsf_val = 0; + ath9k_ps_restore(sc); + + mutex_unlock(&sc->mutex); |