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ath9k: Make start/stop operations aware of virtual wiphys 

Instead of always going through initialization/deinitialization steps,
do this only for the first/last wiphy to not break the other wiphys.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-03-03 19:23:33 +02:00 committed by John W. Linville
parent 0e2dedf971
commit 9580a222b8
3 changed files with 49 additions and 0 deletions
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2
drivers/net/wireless/ath9k/ath9k.h
View File

@ -627,6 +627,7 @@ struct ath_wiphy {
struct ath_softc *sc; /* shared for all virtual wiphys */
struct ieee80211_hw *hw;
enum ath_wiphy_state {
ATH_WIPHY_INACTIVE,
ATH_WIPHY_ACTIVE,
ATH_WIPHY_PAUSING,
ATH_WIPHY_PAUSED,
@ -708,5 +709,6 @@ int ath9k_wiphy_pause(struct ath_wiphy *aphy);
int ath9k_wiphy_unpause(struct ath_wiphy *aphy);
int ath9k_wiphy_select(struct ath_wiphy *aphy);
void ath9k_wiphy_chan_work(struct work_struct *work);
bool ath9k_wiphy_started(struct ath_softc *sc);
#endif /* ATH9K_H */

28
drivers/net/wireless/ath9k/main.c
View File

@ -1965,6 +1965,27 @@ static int ath9k_start(struct ieee80211_hw *hw)
mutex_lock(&sc->mutex);
if (ath9k_wiphy_started(sc)) {
if (sc->chan_idx == curchan->hw_value) {
/*
* Already on the operational channel, the new wiphy
* can be marked active.
*/
aphy->state = ATH_WIPHY_ACTIVE;
ieee80211_wake_queues(hw);
} else {
/*
* Another wiphy is on another channel, start the new
* wiphy in paused state.
*/
aphy->state = ATH_WIPHY_PAUSED;
ieee80211_stop_queues(hw);
}
mutex_unlock(&sc->mutex);
return 0;
}
aphy->state = ATH_WIPHY_ACTIVE;
/* setup initial channel */
pos = curchan->hw_value;
@ -2104,6 +2125,8 @@ static void ath9k_stop(struct ieee80211_hw *hw)
struct ath_wiphy *aphy = hw->priv;
struct ath_softc *sc = aphy->sc;
aphy->state = ATH_WIPHY_INACTIVE;
if (sc->sc_flags & SC_OP_INVALID) {
DPRINTF(sc, ATH_DBG_ANY, "Device not present\n");
return;
@ -2113,6 +2136,11 @@ static void ath9k_stop(struct ieee80211_hw *hw)
ieee80211_stop_queues(hw);
if (ath9k_wiphy_started(sc)) {
mutex_unlock(&sc->mutex);
return; /* another wiphy still in use */
}
/* make sure h/w will not generate any interrupt
* before setting the invalid flag. */
ath9k_hw_set_interrupts(sc->sc_ah, 0);

19
drivers/net/wireless/ath9k/virtual.c
View File

@ -477,3 +477,22 @@ int ath9k_wiphy_select(struct ath_wiphy *aphy)
return 0;
}
bool ath9k_wiphy_started(struct ath_softc *sc)
{
int i;
spin_lock_bh(&sc->wiphy_lock);
if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) {
spin_unlock_bh(&sc->wiphy_lock);
return true;
}
for (i = 0; i < sc->num_sec_wiphy; i++) {
if (sc->sec_wiphy[i] &&
sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE) {
spin_unlock_bh(&sc->wiphy_lock);
return true;
}
}
spin_unlock_bh(&sc->wiphy_lock);
return false;
}