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ath9k: Fetch appropriate operating channel context 

Retrieve appropriate operating channel context while switching
between operating and off channels.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2014-06-11 16:17:58 +05:30 committed by John W. Linville
parent 3930563570
commit c4dc0d040e
3 changed files with 34 additions and 24 deletions
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7
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -355,6 +355,10 @@ struct ath_offchannel {
struct ieee80211_vif *roc_vif;
int roc_duration;
};
#define ath_for_each_chanctx(_sc, _ctx) \
for (ctx = &sc->chanctx[0]; \
ctx <= &sc->chanctx[ARRAY_SIZE(sc->chanctx) - 1]; \
ctx++)
void ath9k_fill_chanctx_ops(void);
static inline struct ath_chanctx *
@ -373,7 +377,8 @@ void ath_offchannel_timer(unsigned long data);
void ath_offchannel_channel_change(struct ath_softc *sc);
void ath_chanctx_offchan_switch(struct ath_softc *sc,
struct ieee80211_channel *chan);
struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc);
struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc,
bool active);
int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan);
int ath_startrecv(struct ath_softc *sc);

14
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -293,13 +293,17 @@ void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx,
ath_set_channel(sc);
}
struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc)
struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc, bool active)
{
u8 i;
struct ath_chanctx *ctx;
for (i = 0; i < ARRAY_SIZE(sc->chanctx); i++) {
if (!list_empty(&sc->chanctx[i].vifs))
return &sc->chanctx[i];
ath_for_each_chanctx(sc, ctx) {
if (!ctx->assigned || list_empty(&ctx->vifs))
continue;
if (active && !ctx->active)
continue;
return ctx;
}
return &sc->chanctx[0];

37
drivers/net/wireless/ath/ath9k/main.c
View File

@ -2161,7 +2161,8 @@ ath_scan_next_channel(struct ath_softc *sc)
if (sc->offchannel.scan_idx >= req->n_channels) {
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc), NULL);
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc, false),
NULL);
return;
}
@ -2184,7 +2185,8 @@ static void ath_offchannel_next(struct ath_softc *sc)
sc->offchannel.state = ATH_OFFCHANNEL_ROC_START;
ath_chanctx_offchan_switch(sc, sc->offchannel.roc_chan);
} else {
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc), NULL);
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc, false),
NULL);
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
if (sc->ps_idle)
ath_cancel_work(sc);
@ -2310,13 +2312,15 @@ void ath_offchannel_channel_change(struct ath_softc *sc)
void ath_offchannel_timer(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
struct ath_chanctx *ctx = ath_chanctx_get_oper_chan(sc);
struct ath_chanctx *ctx;
switch (sc->offchannel.state) {
case ATH_OFFCHANNEL_PROBE_WAIT:
if (!sc->offchannel.scan_req)
return;
/* get first active channel context */
ctx = ath_chanctx_get_oper_chan(sc, true);
if (ctx->active) {
sc->offchannel.state = ATH_OFFCHANNEL_SUSPEND;
ath_chanctx_switch(sc, ctx, NULL);
@ -2332,6 +2336,7 @@ void ath_offchannel_timer(unsigned long data)
break;
case ATH_OFFCHANNEL_ROC_START:
case ATH_OFFCHANNEL_ROC_WAIT:
ctx = ath_chanctx_get_oper_chan(sc, false);
sc->offchannel.state = ATH_OFFCHANNEL_ROC_DONE;
ath_chanctx_switch(sc, ctx, NULL);
break;
@ -2432,26 +2437,22 @@ static int ath9k_add_chanctx(struct ieee80211_hw *hw,
{
struct ath_softc *sc = hw->priv;
struct ath_chanctx *ctx, **ptr;
int i;
mutex_lock(&sc->mutex);
for (i = 0; i < ATH9K_NUM_CHANCTX; i++) {
if (!sc->chanctx[i].assigned)
break;
}
if (i == ATH9K_NUM_CHANCTX) {
ath_for_each_chanctx(sc, ctx) {
if (ctx->assigned)
continue;
ptr = (void *) conf->drv_priv;
*ptr = ctx;
ctx->assigned = true;
ath_chanctx_set_channel(sc, ctx, &conf->def);
mutex_unlock(&sc->mutex);
return -ENOSPC;
return 0;
}
ctx = &sc->chanctx[i];
ptr = (void *) conf->drv_priv;
*ptr = ctx;
ctx->assigned = true;
ath_chanctx_set_channel(sc, ctx, &conf->def);
mutex_unlock(&sc->mutex);
return 0;
return -ENOSPC;
}