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ath9k: Implement channel context ops

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Add channel context operations (add, remove, change, assign and
unassign) to enable support for multiple channels.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2014-06-11 16:17:57 +05:30 committed by John W. Linville
parent 405393cfde
commit 3930563570
4 changed files with 102 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -331,6 +331,7 @@ struct ath_chanctx {
bool offchannel;
bool stopped;
bool active;
bool assigned;
};
enum ath_offchannel_state {
@ -356,6 +357,12 @@ struct ath_offchannel {
};
void ath9k_fill_chanctx_ops(void);
static inline struct ath_chanctx *
ath_chanctx_get(struct ieee80211_chanctx_conf *ctx)
{
struct ath_chanctx **ptr = (void *) ctx->drv_priv;
return *ptr;
}
void ath_chanctx_init(struct ath_softc *sc);
void ath_chanctx_set_channel(struct ath_softc *sc, struct ath_chanctx *ctx,
struct cfg80211_chan_def *chandef);

1
drivers/net/wireless/ath/ath9k/init.c
View File

@ -752,6 +752,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
hw->wiphy->max_scan_ssids = 255;
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
hw->wiphy->max_remain_on_channel_duration = 10000;
hw->chanctx_data_size = sizeof(void *);
}
}

104
drivers/net/wireless/ath/ath9k/main.c
View File

@ -624,7 +624,7 @@ static int ath9k_start(struct ieee80211_hw *hw)
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan;
struct ath_chanctx *ctx = sc->cur_chan;
struct ath9k_channel *init_channel;
int r;
@ -1039,11 +1039,8 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
ath9k_beacon_assign_slot(sc, vif);
avp->vif = vif;
/* XXX - will be removed once chanctx ops are added */
avp->chanctx = sc->cur_chan;
list_add_tail(&avp->list, &sc->cur_chan->vifs);
ath_chanctx_check_active(sc, avp->chanctx);
if (!ath9k_use_chanctx)
avp->chanctx = sc->cur_chan;
an->sc = sc;
an->sta = NULL;
@ -1132,7 +1129,6 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
}
spin_unlock_bh(&sc->sc_pcu_lock);
list_del(&avp->list);
sc->nvifs--;
sc->tx99_vif = NULL;
@ -1144,7 +1140,6 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
ath9k_ps_restore(sc);
ath_tx_node_cleanup(sc, &avp->mcast_node);
ath_chanctx_check_active(sc, avp->chanctx);
mutex_unlock(&sc->mutex);
}
@ -1271,7 +1266,6 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &hw->conf;
struct ath_chanctx *ctx = sc->cur_chan;
bool reset_channel = false;
ath9k_ps_wakeup(sc);
mutex_lock(&sc->mutex);
@ -1287,7 +1281,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
* The chip needs a reset to properly wake up from
* full sleep
*/
reset_channel = ah->chip_fullsleep;
ath_chanctx_set_channel(sc, ctx, &ctx->chandef);
}
}
@ -1317,7 +1311,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
}
}
if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
if (!ath9k_use_chanctx && (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
ctx->offchannel = !!(conf->flags & IEEE80211_CONF_OFFCHANNEL);
ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef);
}
@ -2433,6 +2427,89 @@ static int ath9k_cancel_remain_on_channel(struct ieee80211_hw *hw)
return 0;
}
static int ath9k_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf)
{
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) {
mutex_unlock(&sc->mutex);
return -ENOSPC;
}
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;
}
static void ath9k_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf)
{
struct ath_softc *sc = hw->priv;
struct ath_chanctx *ctx = ath_chanctx_get(conf);
mutex_lock(&sc->mutex);
ctx->assigned = false;
mutex_unlock(&sc->mutex);
}
static void ath9k_change_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
u32 changed)
{
struct ath_softc *sc = hw->priv;
struct ath_chanctx *ctx = ath_chanctx_get(conf);
mutex_lock(&sc->mutex);
ath_chanctx_set_channel(sc, ctx, &conf->def);
mutex_unlock(&sc->mutex);
}
static int ath9k_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *conf)
{
struct ath_softc *sc = hw->priv;
struct ath_vif *avp = (void *)vif->drv_priv;
struct ath_chanctx *ctx = ath_chanctx_get(conf);
mutex_lock(&sc->mutex);
avp->chanctx = ctx;
list_add_tail(&avp->list, &ctx->vifs);
ath_chanctx_check_active(sc, ctx);
mutex_unlock(&sc->mutex);
return 0;
}
static void ath9k_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *conf)
{
struct ath_softc *sc = hw->priv;
struct ath_vif *avp = (void *)vif->drv_priv;
struct ath_chanctx *ctx = ath_chanctx_get(conf);
mutex_lock(&sc->mutex);
avp->chanctx = NULL;
list_del(&avp->list);
ath_chanctx_check_active(sc, ctx);
mutex_unlock(&sc->mutex);
}
void ath9k_fill_chanctx_ops(void)
{
if (!ath9k_use_chanctx)
@ -2442,6 +2519,11 @@ void ath9k_fill_chanctx_ops(void)
ath9k_ops.cancel_hw_scan = ath9k_cancel_hw_scan;
ath9k_ops.remain_on_channel = ath9k_remain_on_channel;
ath9k_ops.cancel_remain_on_channel = ath9k_cancel_remain_on_channel;
ath9k_ops.add_chanctx = ath9k_add_chanctx;
ath9k_ops.remove_chanctx = ath9k_remove_chanctx;
ath9k_ops.change_chanctx = ath9k_change_chanctx;
ath9k_ops.assign_vif_chanctx = ath9k_assign_vif_chanctx;
ath9k_ops.unassign_vif_chanctx = ath9k_unassign_vif_chanctx;
}
struct ieee80211_ops ath9k_ops = {

2
drivers/net/wireless/ath/ath9k/tx99.c
View File

@ -76,7 +76,7 @@ static struct sk_buff *ath9k_build_tx99_skb(struct ath_softc *sc)
tx_info = IEEE80211_SKB_CB(skb);
memset(tx_info, 0, sizeof(*tx_info));
rate = &tx_info->control.rates[0];
tx_info->band = hw->conf.chandef.chan->band;
tx_info->band = sc->cur_chan->chandef.chan->band;
tx_info->flags = IEEE80211_TX_CTL_NO_ACK;
tx_info->control.vif = sc->tx99_vif;
rate->count = 1;