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ath9k: Cache BSS information

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Using the BSS information stored in mac80211 directly
is racy in certain conditions. For example, in a MCC
setup, if the scheduler is switching channels when
a local deauth is issued, calculation of the opmode/bssid
etc. is incorrect. To avoid this, store the bss params
in the driver and use it.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan
2014-09-17 14:45:56 +05:30
committed by John W. Linville
parent 093ec3c533
commit cb35582ab4
3 changed files with 17 additions and 7 deletions
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6
drivers/net/wireless/ath/ath9k/channel.c
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@@ -211,7 +211,7 @@ void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx)
switch (vif->type) {
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
if (vif->bss_conf.assoc)
if (avp->assoc)
active = true;
break;
default:
@@ -917,7 +917,7 @@ ath_chanctx_send_vif_ps_frame(struct ath_softc *sc, struct ath_vif *avp,
switch (vif->type) {
case NL80211_IFTYPE_STATION:
if (!vif->bss_conf.assoc)
if (!avp->assoc)
return false;
skb = ieee80211_nullfunc_get(sc->hw, vif);
@@ -1339,7 +1339,7 @@ void ath9k_p2p_ps_timer(void *priv)
rcu_read_lock();
vif = avp->vif;
sta = ieee80211_find_sta(vif, vif->bss_conf.bssid);
sta = ieee80211_find_sta(vif, avp->bssid);
if (!sta)
goto out;