clear_bit(ATH_OP_SCANNING, &common->op_flags);
}
- struct cfg80211_scan_request *req)
+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)
+{
++ struct cfg80211_scan_request *req = &hw_req->req;
+ struct ath_softc *sc = hw->priv;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ int ret = 0;
+
+ mutex_lock(&sc->mutex);
+
+ if (WARN_ON(sc->offchannel.scan_req)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ath9k_ps_wakeup(sc);
+ set_bit(ATH_OP_SCANNING, &common->op_flags);
+ sc->offchannel.scan_vif = vif;
+ sc->offchannel.scan_req = req;
+ sc->offchannel.scan_idx = 0;
+
+ if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE)
+ ath_offchannel_next(sc);
+
+out:
+ mutex_unlock(&sc->mutex);
+
+ return ret;
+}
+
+static void ath9k_cancel_hw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct ath_softc *sc = hw->priv;
+
+ mutex_lock(&sc->mutex);
+ del_timer_sync(&sc->offchannel.timer);
+ ath_scan_complete(sc, true);
+ mutex_unlock(&sc->mutex);
+}
+
+static int ath9k_remain_on_channel(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_channel *chan, int duration,
+ enum ieee80211_roc_type type)
+{
+ struct ath_softc *sc = hw->priv;
+ int ret = 0;
+
+ mutex_lock(&sc->mutex);
+
+ if (WARN_ON(sc->offchannel.roc_vif)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ath9k_ps_wakeup(sc);
+ sc->offchannel.roc_vif = vif;
+ sc->offchannel.roc_chan = chan;
+ sc->offchannel.roc_duration = duration;
+
+ if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE)
+ ath_offchannel_next(sc);
+
+out:
+ mutex_unlock(&sc->mutex);
+
+ return ret;
+}
+
+static int ath9k_cancel_remain_on_channel(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+
+ mutex_lock(&sc->mutex);
+
+ del_timer_sync(&sc->offchannel.timer);
+
+ if (sc->offchannel.roc_vif) {
+ if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START)
+ ath_roc_complete(sc, true);
+ }
+
+ mutex_unlock(&sc->mutex);
+
+ 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 pos;
+
+ mutex_lock(&sc->mutex);
+
+ ath_for_each_chanctx(sc, ctx) {
+ if (ctx->assigned)
+ continue;
+
+ ptr = (void *) conf->drv_priv;
+ *ptr = ctx;
+ ctx->assigned = true;
+ pos = ctx - &sc->chanctx[0];
+ ctx->hw_queue_base = pos * IEEE80211_NUM_ACS;
+ ath_chanctx_set_channel(sc, ctx, &conf->def);
+ mutex_unlock(&sc->mutex);
+ return 0;
+ }
+ mutex_unlock(&sc->mutex);
+ return -ENOSPC;
+}
+
+
+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;
+ ctx->hw_queue_base = -1;
+ ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN);
+ 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);
+ int i;
+
+ mutex_lock(&sc->mutex);
+ avp->chanctx = ctx;
+ list_add_tail(&avp->list, &ctx->vifs);
+ ath9k_calculate_summary_state(sc, ctx);
+ for (i = 0; i < IEEE80211_NUM_ACS; i++)
+ vif->hw_queue[i] = ctx->hw_queue_base + i;
+ 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);
+ int ac;
+
+ mutex_lock(&sc->mutex);
+ avp->chanctx = NULL;
+ list_del(&avp->list);
+ ath9k_calculate_summary_state(sc, ctx);
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+ vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
+ mutex_unlock(&sc->mutex);
+}
+
+void ath9k_fill_chanctx_ops(void)
+{
+ if (!ath9k_use_chanctx)
+ return;
+
+ ath9k_ops.hw_scan = ath9k_hw_scan;
+ 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;
+ ath9k_ops.mgd_prepare_tx = ath9k_chanctx_force_active;
+}
+
struct ieee80211_ops ath9k_ops = {
.tx = ath9k_tx,
.start = ath9k_start,
git.openpandora.org / pandora-kernel.git / commitdiff