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ath9k: Move channel operations to channel.c 

This reduces clutter in main.c

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2014-08-22 20:39:26 +05:30 committed by John W. Linville
parent 4f6816913f
commit dfcbb3e8f4
3 changed files with 205 additions and 202 deletions
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3
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -432,6 +432,9 @@ struct ath_chanctx *ath_chanctx_get_oper_chan(struct ath_softc *sc,
void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
enum ath_chanctx_event ev);
void ath_chanctx_timer(unsigned long data);
void ath_offchannel_next(struct ath_softc *sc);
void ath_scan_complete(struct ath_softc *sc, bool abort);
void ath_roc_complete(struct ath_softc *sc, bool abort);
int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan);
int ath_startrecv(struct ath_softc *sc);

202
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -683,3 +683,205 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
spin_unlock_bh(&sc->chan_lock);
}
static int ath_scan_channel_duration(struct ath_softc *sc,
struct ieee80211_channel *chan)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
if (!req->n_ssids || (chan->flags & IEEE80211_CHAN_NO_IR))
return (HZ / 9); /* ~110 ms */
return (HZ / 16); /* ~60 ms */
}
static void
ath_scan_next_channel(struct ath_softc *sc)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
struct ieee80211_channel *chan;
if (sc->offchannel.scan_idx >= req->n_channels) {
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc, false),
NULL);
return;
}
chan = req->channels[sc->offchannel.scan_idx++];
sc->offchannel.duration = ath_scan_channel_duration(sc, chan);
sc->offchannel.state = ATH_OFFCHANNEL_PROBE_SEND;
ath_chanctx_offchan_switch(sc, chan);
}
void ath_offchannel_next(struct ath_softc *sc)
{
struct ieee80211_vif *vif;
if (sc->offchannel.scan_req) {
vif = sc->offchannel.scan_vif;
sc->offchannel.chan.txpower = vif->bss_conf.txpower;
ath_scan_next_channel(sc);
} else if (sc->offchannel.roc_vif) {
vif = sc->offchannel.roc_vif;
sc->offchannel.chan.txpower = vif->bss_conf.txpower;
sc->offchannel.duration = sc->offchannel.roc_duration;
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, false),
NULL);
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
if (sc->ps_idle)
ath_cancel_work(sc);
}
}
void ath_roc_complete(struct ath_softc *sc, bool abort)
{
sc->offchannel.roc_vif = NULL;
sc->offchannel.roc_chan = NULL;
if (!abort)
ieee80211_remain_on_channel_expired(sc->hw);
ath_offchannel_next(sc);
ath9k_ps_restore(sc);
}
void ath_scan_complete(struct ath_softc *sc, bool abort)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
sc->offchannel.scan_req = NULL;
sc->offchannel.scan_vif = NULL;
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
ieee80211_scan_completed(sc->hw, abort);
clear_bit(ATH_OP_SCANNING, &common->op_flags);
ath_offchannel_next(sc);
ath9k_ps_restore(sc);
}
static void ath_scan_send_probe(struct ath_softc *sc,
struct cfg80211_ssid *ssid)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
struct ieee80211_vif *vif = sc->offchannel.scan_vif;
struct ath_tx_control txctl = {};
struct sk_buff *skb;
struct ieee80211_tx_info *info;
int band = sc->offchannel.chan.chandef.chan->band;
skb = ieee80211_probereq_get(sc->hw, vif,
ssid->ssid, ssid->ssid_len, req->ie_len);
if (!skb)
return;
info = IEEE80211_SKB_CB(skb);
if (req->no_cck)
info->flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
if (req->ie_len)
memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
skb_set_queue_mapping(skb, IEEE80211_AC_VO);
if (!ieee80211_tx_prepare_skb(sc->hw, vif, skb, band, NULL))
goto error;
txctl.txq = sc->tx.txq_map[IEEE80211_AC_VO];
txctl.force_channel = true;
if (ath_tx_start(sc->hw, skb, &txctl))
goto error;
return;
error:
ieee80211_free_txskb(sc->hw, skb);
}
static void ath_scan_channel_start(struct ath_softc *sc)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
int i;
if (!(sc->cur_chan->chandef.chan->flags & IEEE80211_CHAN_NO_IR) &&
req->n_ssids) {
for (i = 0; i < req->n_ssids; i++)
ath_scan_send_probe(sc, &req->ssids[i]);
}
sc->offchannel.state = ATH_OFFCHANNEL_PROBE_WAIT;
mod_timer(&sc->offchannel.timer, jiffies + sc->offchannel.duration);
}
void ath_offchannel_channel_change(struct ath_softc *sc)
{
switch (sc->offchannel.state) {
case ATH_OFFCHANNEL_PROBE_SEND:
if (!sc->offchannel.scan_req)
return;
if (sc->cur_chan->chandef.chan !=
sc->offchannel.chan.chandef.chan)
return;
ath_scan_channel_start(sc);
break;
case ATH_OFFCHANNEL_IDLE:
if (!sc->offchannel.scan_req)
return;
ath_scan_complete(sc, false);
break;
case ATH_OFFCHANNEL_ROC_START:
if (sc->cur_chan != &sc->offchannel.chan)
break;
sc->offchannel.state = ATH_OFFCHANNEL_ROC_WAIT;
mod_timer(&sc->offchannel.timer, jiffies +
msecs_to_jiffies(sc->offchannel.duration));
ieee80211_ready_on_channel(sc->hw);
break;
case ATH_OFFCHANNEL_ROC_DONE:
ath_roc_complete(sc, false);
break;
default:
break;
}
}
void ath_offchannel_timer(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
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);
mod_timer(&sc->offchannel.timer, jiffies + HZ / 10);
break;
}
/* fall through */
case ATH_OFFCHANNEL_SUSPEND:
if (!sc->offchannel.scan_req)
return;
ath_scan_next_channel(sc);
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;
default:
break;
}
}

202
drivers/net/wireless/ath/ath9k/main.c
View File

@ -2207,208 +2207,6 @@ static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
clear_bit(ATH_OP_SCANNING, &common->op_flags);
}
static int ath_scan_channel_duration(struct ath_softc *sc,
struct ieee80211_channel *chan)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
if (!req->n_ssids || (chan->flags & IEEE80211_CHAN_NO_IR))
return (HZ / 9); /* ~110 ms */
return (HZ / 16); /* ~60 ms */
}
static void
ath_scan_next_channel(struct ath_softc *sc)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
struct ieee80211_channel *chan;
if (sc->offchannel.scan_idx >= req->n_channels) {
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc, false),
NULL);
return;
}
chan = req->channels[sc->offchannel.scan_idx++];
sc->offchannel.duration = ath_scan_channel_duration(sc, chan);
sc->offchannel.state = ATH_OFFCHANNEL_PROBE_SEND;
ath_chanctx_offchan_switch(sc, chan);
}
static void ath_offchannel_next(struct ath_softc *sc)
{
struct ieee80211_vif *vif;
if (sc->offchannel.scan_req) {
vif = sc->offchannel.scan_vif;
sc->offchannel.chan.txpower = vif->bss_conf.txpower;
ath_scan_next_channel(sc);
} else if (sc->offchannel.roc_vif) {
vif = sc->offchannel.roc_vif;
sc->offchannel.chan.txpower = vif->bss_conf.txpower;
sc->offchannel.duration = sc->offchannel.roc_duration;
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, false),
NULL);
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
if (sc->ps_idle)
ath_cancel_work(sc);
}
}
static void ath_roc_complete(struct ath_softc *sc, bool abort)
{
sc->offchannel.roc_vif = NULL;
sc->offchannel.roc_chan = NULL;
if (!abort)
ieee80211_remain_on_channel_expired(sc->hw);
ath_offchannel_next(sc);
ath9k_ps_restore(sc);
}
static void ath_scan_complete(struct ath_softc *sc, bool abort)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
sc->offchannel.scan_req = NULL;
sc->offchannel.scan_vif = NULL;
sc->offchannel.state = ATH_OFFCHANNEL_IDLE;
ieee80211_scan_completed(sc->hw, abort);
clear_bit(ATH_OP_SCANNING, &common->op_flags);
ath_offchannel_next(sc);
ath9k_ps_restore(sc);
}
static void ath_scan_send_probe(struct ath_softc *sc,
struct cfg80211_ssid *ssid)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
struct ieee80211_vif *vif = sc->offchannel.scan_vif;
struct ath_tx_control txctl = {};
struct sk_buff *skb;
struct ieee80211_tx_info *info;
int band = sc->offchannel.chan.chandef.chan->band;
skb = ieee80211_probereq_get(sc->hw, vif,
ssid->ssid, ssid->ssid_len, req->ie_len);
if (!skb)
return;
info = IEEE80211_SKB_CB(skb);
if (req->no_cck)
info->flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
if (req->ie_len)
memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
skb_set_queue_mapping(skb, IEEE80211_AC_VO);
if (!ieee80211_tx_prepare_skb(sc->hw, vif, skb, band, NULL))
goto error;
txctl.txq = sc->tx.txq_map[IEEE80211_AC_VO];
txctl.force_channel = true;
if (ath_tx_start(sc->hw, skb, &txctl))
goto error;
return;
error:
ieee80211_free_txskb(sc->hw, skb);
}
static void ath_scan_channel_start(struct ath_softc *sc)
{
struct cfg80211_scan_request *req = sc->offchannel.scan_req;
int i;
if (!(sc->cur_chan->chandef.chan->flags & IEEE80211_CHAN_NO_IR) &&
req->n_ssids) {
for (i = 0; i < req->n_ssids; i++)
ath_scan_send_probe(sc, &req->ssids[i]);
}
sc->offchannel.state = ATH_OFFCHANNEL_PROBE_WAIT;
mod_timer(&sc->offchannel.timer, jiffies + sc->offchannel.duration);
}
void ath_offchannel_channel_change(struct ath_softc *sc)
{
switch (sc->offchannel.state) {
case ATH_OFFCHANNEL_PROBE_SEND:
if (!sc->offchannel.scan_req)
return;
if (sc->cur_chan->chandef.chan !=
sc->offchannel.chan.chandef.chan)
return;
ath_scan_channel_start(sc);
break;
case ATH_OFFCHANNEL_IDLE:
if (!sc->offchannel.scan_req)
return;
ath_scan_complete(sc, false);
break;
case ATH_OFFCHANNEL_ROC_START:
if (sc->cur_chan != &sc->offchannel.chan)
break;
sc->offchannel.state = ATH_OFFCHANNEL_ROC_WAIT;
mod_timer(&sc->offchannel.timer, jiffies +
msecs_to_jiffies(sc->offchannel.duration));
ieee80211_ready_on_channel(sc->hw);
break;
case ATH_OFFCHANNEL_ROC_DONE:
ath_roc_complete(sc, false);
break;
default:
break;
}
}
void ath_offchannel_timer(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
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);
mod_timer(&sc->offchannel.timer, jiffies + HZ / 10);
break;
}
/* fall through */
case ATH_OFFCHANNEL_SUSPEND:
if (!sc->offchannel.scan_req)
return;
ath_scan_next_channel(sc);
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;
default:
break;
}
}
static int ath9k_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{