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ath9k: prepare for multi-interface CSA support 

Soon mac80211 will support multi-interface CSA so
using sc->csa_vif is not an option.

Instead just depend on vif->csa_active. Calling
ieee80211_csa_finish() multiple number of times
should not be an issue.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michal Kazior 2014-01-20 15:27:12 +01:00 committed by John W. Linville
parent 841577c3d3
commit 4effc6fda7
4 changed files with 24 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -442,7 +442,8 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
void ath9k_set_beacon(struct ath_softc *sc);
bool ath9k_csa_is_finished(struct ath_softc *sc);
bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif);
void ath9k_csa_update(struct ath_softc *sc);
/*******************/
/* Link Monitoring */
@ -774,7 +775,6 @@ struct ath_softc {
#endif
struct ath_descdma txsdma;
struct ieee80211_vif *csa_vif;
struct ath_ant_comb ant_comb;
u8 ant_tx, ant_rx;

29
drivers/net/wireless/ath/ath9k/beacon.c
View File

@ -292,11 +292,8 @@ static void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
(unsigned long long)tsfadjust, avp->av_bslot);
}
bool ath9k_csa_is_finished(struct ath_softc *sc)
bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif)
{
struct ieee80211_vif *vif;
vif = sc->csa_vif;
if (!vif || !vif->csa_active)
return false;
@ -304,11 +301,23 @@ bool ath9k_csa_is_finished(struct ath_softc *sc)
return false;
ieee80211_csa_finish(vif);
sc->csa_vif = NULL;
return true;
}
static void ath9k_csa_update_vif(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct ath_softc *sc = data;
ath9k_csa_is_finished(sc, vif);
}
void ath9k_csa_update(struct ath_softc *sc)
{
ieee80211_iterate_active_interfaces(sc->hw,
IEEE80211_IFACE_ITER_NORMAL,
ath9k_csa_update_vif,
sc);
}
void ath9k_beacon_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
@ -362,13 +371,13 @@ void ath9k_beacon_tasklet(unsigned long data)
return;
}
/* EDMA devices check that in the tx completion function. */
if (!edma && ath9k_csa_is_finished(sc))
return;
slot = ath9k_beacon_choose_slot(sc);
vif = sc->beacon.bslot[slot];
/* EDMA devices check that in the tx completion function. */
if (!edma && ath9k_csa_is_finished(sc, vif))
return;
if (!vif || !vif->bss_conf.enable_beacon)
return;

12
drivers/net/wireless/ath/ath9k/main.c
View File

@ -1178,9 +1178,6 @@ 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);
@ -2086,13 +2083,8 @@ 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;
/* depend on vif->csa_active only */
return;
}
struct ieee80211_ops ath9k_ops = {

2
drivers/net/wireless/ath/ath9k/xmit.c
View File

@ -2566,7 +2566,7 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
sc->beacon.tx_processed = true;
sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
ath9k_csa_is_finished(sc);
ath9k_csa_update(sc);
continue;
}