mutex_lock(&sc->mutex);
- if (ath9k_wiphy_started(sc)) {
- if (sc->chan_idx == curchan->hw_value) {
- /*
- * Already on the operational channel, the new wiphy
- * can be marked active.
- */
- aphy->state = ATH_WIPHY_ACTIVE;
- ieee80211_wake_queues(hw);
- } else {
- /*
- * Another wiphy is on another channel, start the new
- * wiphy in paused state.
- */
- aphy->state = ATH_WIPHY_PAUSED;
- ieee80211_stop_queues(hw);
- }
- mutex_unlock(&sc->mutex);
- return 0;
- }
- aphy->state = ATH_WIPHY_ACTIVE;
-
/* setup initial channel */
-
sc->chan_idx = curchan->hw_value;
init_channel = ath_get_curchannel(sc, hw);
struct ath_tx_control txctl;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
- ath_dbg(common, ATH_DBG_XMIT,
- "ath9k: %s: TX in unexpected wiphy state %d\n",
- wiphy_name(hw->wiphy), aphy->state);
- goto exit;
- }
-
if (sc->ps_enabled) {
/*
* mac80211 does not set PM field for normal data frames, so we
struct ath_softc *sc = aphy->sc;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- int i;
mutex_lock(&sc->mutex);
- aphy->state = ATH_WIPHY_INACTIVE;
-
if (led_blink)
cancel_delayed_work_sync(&sc->ath_led_blink_work);
cancel_work_sync(&sc->paprd_work);
cancel_work_sync(&sc->hw_check_work);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i])
- break;
- }
-
- if (i == sc->num_sec_wiphy) {
- cancel_delayed_work_sync(&sc->wiphy_work);
- cancel_work_sync(&sc->chan_work);
- }
-
if (sc->sc_flags & SC_OP_INVALID) {
ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
mutex_unlock(&sc->mutex);
return;
}
- if (ath9k_wiphy_started(sc)) {
- mutex_unlock(&sc->mutex);
- return; /* another wiphy still in use */
- }
-
/* Ensure HW is awake when we try to shut it down. */
ath9k_ps_wakeup(sc);
ath9k_ps_restore(sc);
sc->ps_idle = true;
- ath9k_set_wiphy_idle(aphy, true);
ath_radio_disable(sc, hw);
sc->sc_flags |= SC_OP_INVALID;
struct ath_softc *sc = aphy->sc;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
- int i;
/*
* Use the hardware MAC address as reference, the hardware uses it
ath9k_vif_iter(iter_data, vif->addr, vif);
/* Get list of all active MAC addresses */
- spin_lock_bh(&sc->wiphy_lock);
ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
iter_data);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] == NULL)
- continue;
- ieee80211_iterate_active_interfaces_atomic(
- sc->sec_wiphy[i]->hw, ath9k_vif_iter, iter_data);
- }
- spin_unlock_bh(&sc->wiphy_lock);
}
/* Called with sc->mutex held. */
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &hw->conf;
- bool disable_radio;
+ bool disable_radio = false;
mutex_lock(&sc->mutex);
* the end.
*/
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
- bool enable_radio;
- bool all_wiphys_idle;
- bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
-
- spin_lock_bh(&sc->wiphy_lock);
- all_wiphys_idle = ath9k_all_wiphys_idle(sc);
- ath9k_set_wiphy_idle(aphy, idle);
-
- enable_radio = (!idle && all_wiphys_idle);
-
- /*
- * After we unlock here its possible another wiphy
- * can be re-renabled so to account for that we will
- * only disable the radio toward the end of this routine
- * if by then all wiphys are still idle.
- */
- spin_unlock_bh(&sc->wiphy_lock);
-
- if (enable_radio) {
- sc->ps_idle = false;
+ sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
+ if (!sc->ps_idle) {
ath_radio_enable(sc, hw);
ath_dbg(common, ATH_DBG_CONFIG,
"not-idle: enabling radio\n");
+ } else {
+ disable_radio = true;
}
}
if (ah->curchan)
old_pos = ah->curchan - &ah->channels[0];
- aphy->chan_idx = pos;
- aphy->chan_is_ht = conf_is_ht(conf);
if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
sc->sc_flags |= SC_OP_OFFCHANNEL;
else
sc->sc_flags &= ~SC_OP_OFFCHANNEL;
- if (aphy->state == ATH_WIPHY_SCAN ||
- aphy->state == ATH_WIPHY_ACTIVE)
- ath9k_wiphy_pause_all_forced(sc, aphy);
- else {
- /*
- * Do not change operational channel based on a paused
- * wiphy changes.
- */
- goto skip_chan_change;
- }
-
ath_dbg(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
curchan->center_freq);
ath_update_survey_nf(sc, old_pos);
}
-skip_chan_change:
if (changed & IEEE80211_CONF_CHANGE_POWER) {
sc->config.txpowlimit = 2 * conf->power_level;
ath_update_txpow(sc);
}
- spin_lock_bh(&sc->wiphy_lock);
- disable_radio = ath9k_all_wiphys_idle(sc);
- spin_unlock_bh(&sc->wiphy_lock);
-
if (disable_radio) {
ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
- sc->ps_idle = true;
ath_radio_disable(sc, hw);
}
return 0;
}
-static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
-{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
-
- mutex_lock(&sc->mutex);
- if (ath9k_wiphy_scanning(sc)) {
- /*
- * There is a race here in mac80211 but fixing it requires
- * we revisit how we handle the scan complete callback.
- * After mac80211 fixes we will not have configured hardware
- * to the home channel nor would we have configured the RX
- * filter yet.
- */
- mutex_unlock(&sc->mutex);
- return;
- }
-
- aphy->state = ATH_WIPHY_SCAN;
- ath9k_wiphy_pause_all_forced(sc, aphy);
- mutex_unlock(&sc->mutex);
-}
-
-/*
- * XXX: this requires a revisit after the driver
- * scan_complete gets moved to another place/removed in mac80211.
- */
-static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
-{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
-
- mutex_lock(&sc->mutex);
- aphy->state = ATH_WIPHY_ACTIVE;
- mutex_unlock(&sc->mutex);
-}
-
static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
{
struct ath_wiphy *aphy = hw->priv;
.reset_tsf = ath9k_reset_tsf,
.ampdu_action = ath9k_ampdu_action,
.get_survey = ath9k_get_survey,
- .sw_scan_start = ath9k_sw_scan_start,
- .sw_scan_complete = ath9k_sw_scan_complete,
.rfkill_poll = ath9k_rfkill_poll_state,
.set_coverage_class = ath9k_set_coverage_class,
};
+++ /dev/null
-/*
- * Copyright (c) 2008-2009 Atheros Communications Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <linux/slab.h>
-
-#include "ath9k.h"
-
-int ath9k_wiphy_add(struct ath_softc *sc)
-{
- int i, error;
- struct ath_wiphy *aphy;
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- struct ieee80211_hw *hw;
- u8 addr[ETH_ALEN];
-
- hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy), &ath9k_ops);
- if (hw == NULL)
- return -ENOMEM;
-
- spin_lock_bh(&sc->wiphy_lock);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] == NULL)
- break;
- }
-
- if (i == sc->num_sec_wiphy) {
- /* No empty slot available; increase array length */
- struct ath_wiphy **n;
- n = krealloc(sc->sec_wiphy,
- (sc->num_sec_wiphy + 1) *
- sizeof(struct ath_wiphy *),
- GFP_ATOMIC);
- if (n == NULL) {
- spin_unlock_bh(&sc->wiphy_lock);
- ieee80211_free_hw(hw);
- return -ENOMEM;
- }
- n[i] = NULL;
- sc->sec_wiphy = n;
- sc->num_sec_wiphy++;
- }
-
- SET_IEEE80211_DEV(hw, sc->dev);
-
- aphy = hw->priv;
- aphy->sc = sc;
- aphy->hw = hw;
- sc->sec_wiphy[i] = aphy;
- aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
- spin_unlock_bh(&sc->wiphy_lock);
-
- memcpy(addr, common->macaddr, ETH_ALEN);
- addr[0] |= 0x02; /* Locally managed address */
- /*
- * XOR virtual wiphy index into the least significant bits to generate
- * a different MAC address for each virtual wiphy.
- */
- addr[5] ^= i & 0xff;
- addr[4] ^= (i & 0xff00) >> 8;
- addr[3] ^= (i & 0xff0000) >> 16;
-
- SET_IEEE80211_PERM_ADDR(hw, addr);
-
- ath9k_set_hw_capab(sc, hw);
-
- error = ieee80211_register_hw(hw);
-
- if (error == 0) {
- /* Make sure wiphy scheduler is started (if enabled) */
- ath9k_wiphy_set_scheduler(sc, sc->wiphy_scheduler_int);
- }
-
- return error;
-}
-
-int ath9k_wiphy_del(struct ath_wiphy *aphy)
-{
- struct ath_softc *sc = aphy->sc;
- int i;
-
- spin_lock_bh(&sc->wiphy_lock);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (aphy == sc->sec_wiphy[i]) {
- sc->sec_wiphy[i] = NULL;
- spin_unlock_bh(&sc->wiphy_lock);
- ieee80211_unregister_hw(aphy->hw);
- ieee80211_free_hw(aphy->hw);
- return 0;
- }
- }
- spin_unlock_bh(&sc->wiphy_lock);
- return -ENOENT;
-}
-
-static int ath9k_send_nullfunc(struct ath_wiphy *aphy,
- struct ieee80211_vif *vif, const u8 *bssid,
- int ps)
-{
- struct ath_softc *sc = aphy->sc;
- struct ath_tx_control txctl;
- struct sk_buff *skb;
- struct ieee80211_hdr *hdr;
- __le16 fc;
- struct ieee80211_tx_info *info;
-
- skb = dev_alloc_skb(24);
- if (skb == NULL)
- return -ENOMEM;
- hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
- memset(hdr, 0, 24);
- fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
- IEEE80211_FCTL_TODS);
- if (ps)
- fc |= cpu_to_le16(IEEE80211_FCTL_PM);
- hdr->frame_control = fc;
- memcpy(hdr->addr1, bssid, ETH_ALEN);
- memcpy(hdr->addr2, aphy->hw->wiphy->perm_addr, ETH_ALEN);
- memcpy(hdr->addr3, bssid, ETH_ALEN);
-
- info = IEEE80211_SKB_CB(skb);
- memset(info, 0, sizeof(*info));
- info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS;
- info->control.vif = vif;
- info->control.rates[0].idx = 0;
- info->control.rates[0].count = 4;
- info->control.rates[1].idx = -1;
-
- memset(&txctl, 0, sizeof(struct ath_tx_control));
- txctl.txq = sc->tx.txq_map[WME_AC_VO];
- txctl.frame_type = ps ? ATH9K_IFT_PAUSE : ATH9K_IFT_UNPAUSE;
-
- if (ath_tx_start(aphy->hw, skb, &txctl) != 0)
- goto exit;
-
- return 0;
-exit:
- dev_kfree_skb_any(skb);
- return -1;
-}
-
-static bool __ath9k_wiphy_pausing(struct ath_softc *sc)
-{
- int i;
- if (sc->pri_wiphy->state == ATH_WIPHY_PAUSING)
- return true;
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state == ATH_WIPHY_PAUSING)
- return true;
- }
- return false;
-}
-
-static bool ath9k_wiphy_pausing(struct ath_softc *sc)
-{
- bool ret;
- spin_lock_bh(&sc->wiphy_lock);
- ret = __ath9k_wiphy_pausing(sc);
- spin_unlock_bh(&sc->wiphy_lock);
- return ret;
-}
-
-static bool __ath9k_wiphy_scanning(struct ath_softc *sc)
-{
- int i;
- if (sc->pri_wiphy->state == ATH_WIPHY_SCAN)
- return true;
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state == ATH_WIPHY_SCAN)
- return true;
- }
- return false;
-}
-
-bool ath9k_wiphy_scanning(struct ath_softc *sc)
-{
- bool ret;
- spin_lock_bh(&sc->wiphy_lock);
- ret = __ath9k_wiphy_scanning(sc);
- spin_unlock_bh(&sc->wiphy_lock);
- return ret;
-}
-
-static int __ath9k_wiphy_unpause(struct ath_wiphy *aphy);
-
-/* caller must hold wiphy_lock */
-static void __ath9k_wiphy_unpause_ch(struct ath_wiphy *aphy)
-{
- if (aphy == NULL)
- return;
- if (aphy->chan_idx != aphy->sc->chan_idx)
- return; /* wiphy not on the selected channel */
- __ath9k_wiphy_unpause(aphy);
-}
-
-static void ath9k_wiphy_unpause_channel(struct ath_softc *sc)
-{
- int i;
- spin_lock_bh(&sc->wiphy_lock);
- __ath9k_wiphy_unpause_ch(sc->pri_wiphy);
- for (i = 0; i < sc->num_sec_wiphy; i++)
- __ath9k_wiphy_unpause_ch(sc->sec_wiphy[i]);
- spin_unlock_bh(&sc->wiphy_lock);
-}
-
-void ath9k_wiphy_chan_work(struct work_struct *work)
-{
- struct ath_softc *sc = container_of(work, struct ath_softc, chan_work);
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- struct ath_wiphy *aphy = sc->next_wiphy;
-
- if (aphy == NULL)
- return;
-
- /*
- * All pending interfaces paused; ready to change
- * channels.
- */
-
- /* Change channels */
- mutex_lock(&sc->mutex);
- /* XXX: remove me eventually */
- ath9k_update_ichannel(sc, aphy->hw,
- &sc->sc_ah->channels[sc->chan_idx]);
-
- /* sync hw configuration for hw code */
- common->hw = aphy->hw;
-
- if (ath_set_channel(sc, aphy->hw,
- &sc->sc_ah->channels[sc->chan_idx]) < 0) {
- printk(KERN_DEBUG "ath9k: Failed to set channel for new "
- "virtual wiphy\n");
- mutex_unlock(&sc->mutex);
- return;
- }
- mutex_unlock(&sc->mutex);
-
- ath9k_wiphy_unpause_channel(sc);
-}
-
-/*
- * ath9k version of ieee80211_tx_status() for TX frames that are generated
- * internally in the driver.
- */
-void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, int ftype)
-{
- struct ath_wiphy *aphy = hw->priv;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-
- if (ftype == ATH9K_IFT_PAUSE && aphy->state == ATH_WIPHY_PAUSING) {
- if (!(tx_info->flags & IEEE80211_TX_STAT_ACK)) {
- printk(KERN_DEBUG "ath9k: %s: no ACK for pause "
- "frame\n", wiphy_name(hw->wiphy));
- /*
- * The AP did not reply; ignore this to allow us to
- * continue.
- */
- }
- aphy->state = ATH_WIPHY_PAUSED;
- if (!ath9k_wiphy_pausing(aphy->sc)) {
- /*
- * Drop from tasklet to work to allow mutex for channel
- * change.
- */
- ieee80211_queue_work(aphy->sc->hw,
- &aphy->sc->chan_work);
- }
- }
-
- dev_kfree_skb(skb);
-}
-
-static void ath9k_mark_paused(struct ath_wiphy *aphy)
-{
- struct ath_softc *sc = aphy->sc;
- aphy->state = ATH_WIPHY_PAUSED;
- if (!__ath9k_wiphy_pausing(sc))
- ieee80211_queue_work(sc->hw, &sc->chan_work);
-}
-
-static void ath9k_pause_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
-{
- struct ath_wiphy *aphy = data;
- struct ath_vif *avp = (void *) vif->drv_priv;
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- if (!vif->bss_conf.assoc) {
- ath9k_mark_paused(aphy);
- break;
- }
- /* TODO: could avoid this if already in PS mode */
- if (ath9k_send_nullfunc(aphy, vif, avp->bssid, 1)) {
- printk(KERN_DEBUG "%s: failed to send PS nullfunc\n",
- __func__);
- ath9k_mark_paused(aphy);
- }
- break;
- case NL80211_IFTYPE_AP:
- /* Beacon transmission is paused by aphy->state change */
- ath9k_mark_paused(aphy);
- break;
- default:
- break;
- }
-}
-
-/* caller must hold wiphy_lock */
-static int __ath9k_wiphy_pause(struct ath_wiphy *aphy)
-{
- ieee80211_stop_queues(aphy->hw);
- aphy->state = ATH_WIPHY_PAUSING;
- /*
- * TODO: handle PAUSING->PAUSED for the case where there are multiple
- * active vifs (now we do it on the first vif getting ready; should be
- * on the last)
- */
- ieee80211_iterate_active_interfaces_atomic(aphy->hw, ath9k_pause_iter,
- aphy);
- return 0;
-}
-
-int ath9k_wiphy_pause(struct ath_wiphy *aphy)
-{
- int ret;
- spin_lock_bh(&aphy->sc->wiphy_lock);
- ret = __ath9k_wiphy_pause(aphy);
- spin_unlock_bh(&aphy->sc->wiphy_lock);
- return ret;
-}
-
-static void ath9k_unpause_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
-{
- struct ath_wiphy *aphy = data;
- struct ath_vif *avp = (void *) vif->drv_priv;
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- if (!vif->bss_conf.assoc)
- break;
- ath9k_send_nullfunc(aphy, vif, avp->bssid, 0);
- break;
- case NL80211_IFTYPE_AP:
- /* Beacon transmission is re-enabled by aphy->state change */
- break;
- default:
- break;
- }
-}
-
-/* caller must hold wiphy_lock */
-static int __ath9k_wiphy_unpause(struct ath_wiphy *aphy)
-{
- ieee80211_iterate_active_interfaces_atomic(aphy->hw,
- ath9k_unpause_iter, aphy);
- aphy->state = ATH_WIPHY_ACTIVE;
- ieee80211_wake_queues(aphy->hw);
- return 0;
-}
-
-int ath9k_wiphy_unpause(struct ath_wiphy *aphy)
-{
- int ret;
- spin_lock_bh(&aphy->sc->wiphy_lock);
- ret = __ath9k_wiphy_unpause(aphy);
- spin_unlock_bh(&aphy->sc->wiphy_lock);
- return ret;
-}
-
-static void __ath9k_wiphy_mark_all_paused(struct ath_softc *sc)
-{
- int i;
- if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE)
- sc->pri_wiphy->state = ATH_WIPHY_PAUSED;
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE)
- sc->sec_wiphy[i]->state = ATH_WIPHY_PAUSED;
- }
-}
-
-/* caller must hold wiphy_lock */
-static void __ath9k_wiphy_pause_all(struct ath_softc *sc)
-{
- int i;
- if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE)
- __ath9k_wiphy_pause(sc->pri_wiphy);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state == ATH_WIPHY_ACTIVE)
- __ath9k_wiphy_pause(sc->sec_wiphy[i]);
- }
-}
-
-int ath9k_wiphy_select(struct ath_wiphy *aphy)
-{
- struct ath_softc *sc = aphy->sc;
- bool now;
-
- spin_lock_bh(&sc->wiphy_lock);
- if (__ath9k_wiphy_scanning(sc)) {
- /*
- * For now, we are using mac80211 sw scan and it expects to
- * have full control over channel changes, so avoid wiphy
- * scheduling during a scan. This could be optimized if the
- * scanning control were moved into the driver.
- */
- spin_unlock_bh(&sc->wiphy_lock);
- return -EBUSY;
- }
- if (__ath9k_wiphy_pausing(sc)) {
- if (sc->wiphy_select_failures == 0)
- sc->wiphy_select_first_fail = jiffies;
- sc->wiphy_select_failures++;
- if (time_after(jiffies, sc->wiphy_select_first_fail + HZ / 2))
- {
- printk(KERN_DEBUG "ath9k: Previous wiphy select timed "
- "out; disable/enable hw to recover\n");
- __ath9k_wiphy_mark_all_paused(sc);
- /*
- * TODO: this workaround to fix hardware is unlikely to
- * be specific to virtual wiphy changes. It can happen
- * on normal channel change, too, and as such, this
- * should really be made more generic. For example,
- * tricker radio disable/enable on GTT interrupt burst
- * (say, 10 GTT interrupts received without any TX
- * frame being completed)
- */
- spin_unlock_bh(&sc->wiphy_lock);
- ath_radio_disable(sc, aphy->hw);
- ath_radio_enable(sc, aphy->hw);
- /* Only the primary wiphy hw is used for queuing work */
- ieee80211_queue_work(aphy->sc->hw,
- &aphy->sc->chan_work);
- return -EBUSY; /* previous select still in progress */
- }
- spin_unlock_bh(&sc->wiphy_lock);
- return -EBUSY; /* previous select still in progress */
- }
- sc->wiphy_select_failures = 0;
-
- /* Store the new channel */
- sc->chan_idx = aphy->chan_idx;
- sc->chan_is_ht = aphy->chan_is_ht;
- sc->next_wiphy = aphy;
-
- __ath9k_wiphy_pause_all(sc);
- now = !__ath9k_wiphy_pausing(aphy->sc);
- spin_unlock_bh(&sc->wiphy_lock);
-
- if (now) {
- /* Ready to request channel change immediately */
- ieee80211_queue_work(aphy->sc->hw, &aphy->sc->chan_work);
- }
-
- /*
- * wiphys will be unpaused in ath9k_tx_status() once channel has been
- * changed if any wiphy needs time to become paused.
- */
-
- return 0;
-}
-
-bool ath9k_wiphy_started(struct ath_softc *sc)
-{
- int i;
- spin_lock_bh(&sc->wiphy_lock);
- if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) {
- spin_unlock_bh(&sc->wiphy_lock);
- return true;
- }
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE) {
- spin_unlock_bh(&sc->wiphy_lock);
- return true;
- }
- }
- spin_unlock_bh(&sc->wiphy_lock);
- return false;
-}
-
-static void ath9k_wiphy_pause_chan(struct ath_wiphy *aphy,
- struct ath_wiphy *selected)
-{
- if (selected->state == ATH_WIPHY_SCAN) {
- if (aphy == selected)
- return;
- /*
- * Pause all other wiphys for the duration of the scan even if
- * they are on the current channel now.
- */
- } else if (aphy->chan_idx == selected->chan_idx)
- return;
- aphy->state = ATH_WIPHY_PAUSED;
- ieee80211_stop_queues(aphy->hw);
-}
-
-void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
- struct ath_wiphy *selected)
-{
- int i;
- spin_lock_bh(&sc->wiphy_lock);
- if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE)
- ath9k_wiphy_pause_chan(sc->pri_wiphy, selected);
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- if (sc->sec_wiphy[i] &&
- sc->sec_wiphy[i]->state == ATH_WIPHY_ACTIVE)
- ath9k_wiphy_pause_chan(sc->sec_wiphy[i], selected);
- }
- spin_unlock_bh(&sc->wiphy_lock);
-}
-
-void ath9k_wiphy_work(struct work_struct *work)
-{
- struct ath_softc *sc = container_of(work, struct ath_softc,
- wiphy_work.work);
- struct ath_wiphy *aphy = NULL;
- bool first = true;
-
- spin_lock_bh(&sc->wiphy_lock);
-
- if (sc->wiphy_scheduler_int == 0) {
- /* wiphy scheduler is disabled */
- spin_unlock_bh(&sc->wiphy_lock);
- return;
- }
-
-try_again:
- sc->wiphy_scheduler_index++;
- while (sc->wiphy_scheduler_index <= sc->num_sec_wiphy) {
- aphy = sc->sec_wiphy[sc->wiphy_scheduler_index - 1];
- if (aphy && aphy->state != ATH_WIPHY_INACTIVE)
- break;
-
- sc->wiphy_scheduler_index++;
- aphy = NULL;
- }
- if (aphy == NULL) {
- sc->wiphy_scheduler_index = 0;
- if (sc->pri_wiphy->state == ATH_WIPHY_INACTIVE) {
- if (first) {
- first = false;
- goto try_again;
- }
- /* No wiphy is ready to be scheduled */
- } else
- aphy = sc->pri_wiphy;
- }
-
- spin_unlock_bh(&sc->wiphy_lock);
-
- if (aphy &&
- aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN &&
- ath9k_wiphy_select(aphy)) {
- printk(KERN_DEBUG "ath9k: Failed to schedule virtual wiphy "
- "change\n");
- }
-
- ieee80211_queue_delayed_work(sc->hw,
- &sc->wiphy_work,
- sc->wiphy_scheduler_int);
-}
-
-void ath9k_wiphy_set_scheduler(struct ath_softc *sc, unsigned int msec_int)
-{
- cancel_delayed_work_sync(&sc->wiphy_work);
- sc->wiphy_scheduler_int = msecs_to_jiffies(msec_int);
- if (sc->wiphy_scheduler_int)
- ieee80211_queue_delayed_work(sc->hw, &sc->wiphy_work,
- sc->wiphy_scheduler_int);
-}
-
-/* caller must hold wiphy_lock */
-bool ath9k_all_wiphys_idle(struct ath_softc *sc)
-{
- unsigned int i;
- if (!sc->pri_wiphy->idle)
- return false;
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- struct ath_wiphy *aphy = sc->sec_wiphy[i];
- if (!aphy)
- continue;
- if (!aphy->idle)
- return false;
- }
- return true;
-}
-
-/* caller must hold wiphy_lock */
-void ath9k_set_wiphy_idle(struct ath_wiphy *aphy, bool idle)
-{
- struct ath_softc *sc = aphy->sc;
-
- aphy->idle = idle;
- ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
- "Marking %s as %sidle\n",
- wiphy_name(aphy->hw->wiphy), idle ? "" : "not-");
-}
-/* Only bother starting a queue on an active virtual wiphy */
-bool ath_mac80211_start_queue(struct ath_softc *sc, u16 skb_queue)
-{
- struct ieee80211_hw *hw = sc->pri_wiphy->hw;
- unsigned int i;
- bool txq_started = false;
-
- spin_lock_bh(&sc->wiphy_lock);
-
- /* Start the primary wiphy */
- if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE) {
- ieee80211_wake_queue(hw, skb_queue);
- txq_started = true;
- goto unlock;
- }
-
- /* Now start the secondary wiphy queues */
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- struct ath_wiphy *aphy = sc->sec_wiphy[i];
- if (!aphy)
- continue;
- if (aphy->state != ATH_WIPHY_ACTIVE)
- continue;
-
- hw = aphy->hw;
- ieee80211_wake_queue(hw, skb_queue);
- txq_started = true;
- break;
- }
-
-unlock:
- spin_unlock_bh(&sc->wiphy_lock);
- return txq_started;
-}
-
-/* Go ahead and propagate information to all virtual wiphys, it won't hurt */
-void ath_mac80211_stop_queue(struct ath_softc *sc, u16 skb_queue)
-{
- struct ieee80211_hw *hw = sc->pri_wiphy->hw;
- unsigned int i;
-
- spin_lock_bh(&sc->wiphy_lock);
-
- /* Stop the primary wiphy */
- ieee80211_stop_queue(hw, skb_queue);
-
- /* Now stop the secondary wiphy queues */
- for (i = 0; i < sc->num_sec_wiphy; i++) {
- struct ath_wiphy *aphy = sc->sec_wiphy[i];
- if (!aphy)
- continue;
- hw = aphy->hw;
- ieee80211_stop_queue(hw, skb_queue);
- }
- spin_unlock_bh(&sc->wiphy_lock);
-}
projects / ~andy / linux / commitdiff