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ath9k: Pause other virtual wiphys on channel change
For now, allow channel changes immediately and just force the other virtual wiphys to paused state. This is needed to allow mac80211-controlled scan to control channel changes. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -710,5 +710,7 @@ int ath9k_wiphy_unpause(struct ath_wiphy *aphy);
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int ath9k_wiphy_select(struct ath_wiphy *aphy);
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void ath9k_wiphy_chan_work(struct work_struct *work);
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bool ath9k_wiphy_started(struct ath_softc *sc);
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void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
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struct ath_wiphy *selected);
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#endif /* ATH9K_H */
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@ -2343,7 +2343,13 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
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aphy->chan_is_ht = conf_is_ht(conf);
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/* TODO: do not change operation channel immediately if there
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* are other virtual wiphys that use another channel */
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* are other virtual wiphys that use another channel. For now,
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* we do the change immediately to allow mac80211-operated scan
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* to work. Once the scan operation is moved into ath9k, we can
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* just move the current aphy in PAUSED state if the channel is
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* changed into something different from the current operation
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* channel. */
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ath9k_wiphy_pause_all_forced(sc, aphy);
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DPRINTF(sc, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
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curchan->center_freq);
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@ -496,3 +496,27 @@ bool ath9k_wiphy_started(struct ath_softc *sc)
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spin_unlock_bh(&sc->wiphy_lock);
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return false;
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}
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static void ath9k_wiphy_pause_chan(struct ath_wiphy *aphy,
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struct ath_wiphy *selected)
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{
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if (aphy->chan_idx == selected->chan_idx)
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return;
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aphy->state = ATH_WIPHY_PAUSED;
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ieee80211_stop_queues(aphy->hw);
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}
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void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
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struct ath_wiphy *selected)
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{
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int i;
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spin_lock_bh(&sc->wiphy_lock);
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if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE)
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ath9k_wiphy_pause_chan(sc->pri_wiphy, selected);
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for (i = 0; i < sc->num_sec_wiphy; i++) {
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if (sc->sec_wiphy[i] &&
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sc->sec_wiphy[i]->state == ATH_WIPHY_ACTIVE)
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ath9k_wiphy_pause_chan(sc->sec_wiphy[i], selected);
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}
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spin_unlock_bh(&sc->wiphy_lock);
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}
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