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ath9k: enable CSA functionality in ath9k

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CSA is only enabled for one interface, but the same limitation applies
for mac80211 too. It checks whether the beacon has been sent (different
approaches for non-EDMA-enabled and EDMA-enabled devices), and completes
the channel switch after that.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Simon Wunderlich
2013-08-14 08:01:38 +02:00
committed by John W. Linville
parent 4d70f2fbe1
commit d074e8d547
5 changed files with 43 additions and 0 deletions
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17
drivers/net/wireless/ath/ath9k/main.c
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@@ -1032,6 +1032,9 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
if (ath9k_uses_beacons(vif->type))
ath9k_beacon_remove_slot(sc, vif);
if (sc->csa_vif == vif)
sc->csa_vif = NULL;
ath9k_ps_wakeup(sc);
ath9k_calculate_summary_state(hw, NULL);
ath9k_ps_restore(sc);
@@ -2318,6 +2321,19 @@ static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
clear_bit(SC_OP_SCANNING, &sc->sc_flags);
}
static void ath9k_channel_switch_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_chan_def *chandef)
{
struct ath_softc *sc = hw->priv;
/* mac80211 does not support CSA in multi-if cases (yet) */
if (WARN_ON(sc->csa_vif))
return;
sc->csa_vif = vif;
}
struct ieee80211_ops ath9k_ops = {
.tx = ath9k_tx,
.start = ath9k_start,
@@ -2365,4 +2381,5 @@ struct ieee80211_ops ath9k_ops = {
#endif
.sw_scan_start = ath9k_sw_scan_start,
.sw_scan_complete = ath9k_sw_scan_complete,
.channel_switch_beacon = ath9k_channel_switch_beacon,
};