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path: root/drivers/net/wireless/ath/ath9k/main.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c328
1 files changed, 237 insertions, 91 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 1482fa650833..17ebdf1e8b7b 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -299,7 +299,7 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
if (sc->sc_flags & SC_OP_BEACONS)
- ath_beacon_config(sc, NULL);
+ ath_set_beacon(sc);
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
ath_start_ani(common);
@@ -624,6 +624,43 @@ out:
ath9k_ps_restore(sc);
}
+static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
+{
+ static int count;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+
+ if (pll_sqsum >= 0x40000) {
+ count++;
+ if (count == 3) {
+ /* Rx is hung for more than 500ms. Reset it */
+ ath_dbg(common, ATH_DBG_RESET,
+ "Possible RX hang, resetting");
+ ath_reset(sc, true);
+ count = 0;
+ }
+ } else
+ count = 0;
+}
+
+void ath_hw_pll_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc,
+ hw_pll_work.work);
+ u32 pll_sqsum;
+
+ if (AR_SREV_9485(sc->sc_ah)) {
+
+ ath9k_ps_wakeup(sc);
+ pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
+ ath9k_ps_restore(sc);
+
+ ath_hw_pll_rx_hang_check(sc, pll_sqsum);
+
+ ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
+ }
+}
+
+
void ath9k_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
@@ -652,6 +689,17 @@ void ath9k_tasklet(unsigned long data)
!ath9k_hw_check_alive(ah))
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
+ if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
+ /*
+ * TSF sync does not look correct; remain awake to sync with
+ * the next Beacon.
+ */
+ ath_dbg(common, ATH_DBG_PS,
+ "TSFOOR - Sync with next Beacon\n");
+ sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC |
+ PS_TSFOOR_SYNC;
+ }
+
if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
ATH9K_INT_RXORN);
@@ -674,16 +722,6 @@ void ath9k_tasklet(unsigned long data)
ath_tx_tasklet(sc);
}
- if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
- /*
- * TSF sync does not look correct; remain awake to sync with
- * the next Beacon.
- */
- ath_dbg(common, ATH_DBG_PS,
- "TSFOOR - Sync with next Beacon\n");
- sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
- }
-
if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
if (status & ATH9K_INT_GENTIMER)
ath_gen_timer_isr(sc->sc_ah);
@@ -828,48 +866,6 @@ chip_reset:
#undef SCHED_INTR
}
-static void ath9k_bss_assoc_info(struct ath_softc *sc,
- struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf)
-{
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
-
- if (bss_conf->assoc) {
- ath_dbg(common, ATH_DBG_CONFIG,
- "Bss Info ASSOC %d, bssid: %pM\n",
- bss_conf->aid, common->curbssid);
-
- /* New association, store aid */
- common->curaid = bss_conf->aid;
- ath9k_hw_write_associd(ah);
-
- /*
- * Request a re-configuration of Beacon related timers
- * on the receipt of the first Beacon frame (i.e.,
- * after time sync with the AP).
- */
- sc->ps_flags |= PS_BEACON_SYNC;
-
- /* Configure the beacon */
- ath_beacon_config(sc, vif);
-
- /* Reset rssi stats */
- sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
-
- sc->sc_flags |= SC_OP_ANI_RUN;
- ath_start_ani(common);
- } else {
- ath_dbg(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
- common->curaid = 0;
- /* Stop ANI */
- sc->sc_flags &= ~SC_OP_ANI_RUN;
- del_timer_sync(&common->ani.timer);
- }
-}
-
void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
{
struct ath_hw *ah = sc->sc_ah;
@@ -899,7 +895,7 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
goto out;
}
if (sc->sc_flags & SC_OP_BEACONS)
- ath_beacon_config(sc, NULL); /* restart beacons */
+ ath_set_beacon(sc); /* restart beacons */
/* Re-Enable interrupts */
ath9k_hw_set_interrupts(ah, ah->imask);
@@ -1006,7 +1002,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
sc->config.txpowlimit, &sc->curtxpow);
if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
- ath_beacon_config(sc, NULL); /* restart beacons */
+ ath_set_beacon(sc); /* restart beacons */
ath9k_hw_set_interrupts(ah, ah->imask);
@@ -1389,7 +1385,9 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
ath9k_hw_set_tsfadjust(ah, 0);
sc->sc_flags &= ~SC_OP_TSF_RESET;
- if (iter_data.nwds + iter_data.nmeshes)
+ if (iter_data.nmeshes)
+ ah->opmode = NL80211_IFTYPE_MESH_POINT;
+ else if (iter_data.nwds)
ah->opmode = NL80211_IFTYPE_AP;
else if (iter_data.nadhocs)
ah->opmode = NL80211_IFTYPE_ADHOC;
@@ -1413,6 +1411,7 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
/* Set up ANI */
if ((iter_data.naps + iter_data.nadhocs) > 0) {
+ sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
sc->sc_flags |= SC_OP_ANI_RUN;
ath_start_ani(common);
} else {
@@ -1452,7 +1451,6 @@ static int ath9k_add_interface(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 ath_vif *avp = (void *)vif->drv_priv;
int ret = 0;
ath9k_ps_wakeup(sc);
@@ -1482,8 +1480,9 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
}
}
- if ((vif->type == NL80211_IFTYPE_ADHOC) &&
- sc->nvifs > 0) {
+ if ((ah->opmode == NL80211_IFTYPE_ADHOC) ||
+ ((vif->type == NL80211_IFTYPE_ADHOC) &&
+ sc->nvifs > 0)) {
ath_err(common, "Cannot create ADHOC interface when other"
" interfaces already exist.\n");
ret = -EINVAL;
@@ -1493,10 +1492,6 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
ath_dbg(common, ATH_DBG_CONFIG,
"Attach a VIF of type: %d\n", vif->type);
- /* Set the VIF opmode */
- avp->av_opmode = vif->type;
- avp->av_bslot = -1;
-
sc->nvifs++;
ath9k_do_vif_add_setup(hw, vif);
@@ -1782,23 +1777,68 @@ static int ath9k_sta_add(struct ieee80211_hw *hw,
struct ieee80211_sta *sta)
{
struct ath_softc *sc = hw->priv;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_node *an = (struct ath_node *) sta->drv_priv;
+ struct ieee80211_key_conf ps_key = { };
ath_node_attach(sc, sta);
+ if (vif->type != NL80211_IFTYPE_AP &&
+ vif->type != NL80211_IFTYPE_AP_VLAN)
+ return 0;
+
+ an->ps_key = ath_key_config(common, vif, sta, &ps_key);
+
return 0;
}
+static void ath9k_del_ps_key(struct ath_softc *sc,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_node *an = (struct ath_node *) sta->drv_priv;
+ struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
+
+ if (!an->ps_key)
+ return;
+
+ ath_key_delete(common, &ps_key);
+}
+
static int ath9k_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath_softc *sc = hw->priv;
+ ath9k_del_ps_key(sc, vif, sta);
ath_node_detach(sc, sta);
return 0;
}
+static void ath9k_sta_notify(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd,
+ struct ieee80211_sta *sta)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_node *an = (struct ath_node *) sta->drv_priv;
+
+ switch (cmd) {
+ case STA_NOTIFY_SLEEP:
+ an->sleeping = true;
+ if (ath_tx_aggr_sleep(sc, an))
+ ieee80211_sta_set_tim(sta);
+ break;
+ case STA_NOTIFY_AWAKE:
+ an->sleeping = false;
+ ath_tx_aggr_wakeup(sc, an);
+ break;
+ }
+}
+
static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
@@ -1855,12 +1895,29 @@ static int ath9k_set_key(struct ieee80211_hw *hw,
if (ath9k_modparam_nohwcrypt)
return -ENOSPC;
+ if (vif->type == NL80211_IFTYPE_ADHOC &&
+ (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
+ key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
+ !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+ /*
+ * For now, disable hw crypto for the RSN IBSS group keys. This
+ * could be optimized in the future to use a modified key cache
+ * design to support per-STA RX GTK, but until that gets
+ * implemented, use of software crypto for group addressed
+ * frames is a acceptable to allow RSN IBSS to be used.
+ */
+ return -EOPNOTSUPP;
+ }
+
mutex_lock(&sc->mutex);
ath9k_ps_wakeup(sc);
ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
switch (cmd) {
case SET_KEY:
+ if (sta)
+ ath9k_del_ps_key(sc, vif, sta);
+
ret = ath_key_config(common, vif, sta, key);
if (ret >= 0) {
key->hw_key_idx = ret;
@@ -1886,6 +1943,92 @@ static int ath9k_set_key(struct ieee80211_hw *hw,
return ret;
}
+static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
+{
+ struct ath_softc *sc = data;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+ struct ath_vif *avp = (void *)vif->drv_priv;
+
+ switch (sc->sc_ah->opmode) {
+ case NL80211_IFTYPE_ADHOC:
+ /* There can be only one vif available */
+ memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
+ common->curaid = bss_conf->aid;
+ ath9k_hw_write_associd(sc->sc_ah);
+ /* configure beacon */
+ if (bss_conf->enable_beacon)
+ ath_beacon_config(sc, vif);
+ break;
+ case NL80211_IFTYPE_STATION:
+ /*
+ * Skip iteration if primary station vif's bss info
+ * was not changed
+ */
+ if (sc->sc_flags & SC_OP_PRIM_STA_VIF)
+ break;
+
+ if (bss_conf->assoc) {
+ sc->sc_flags |= SC_OP_PRIM_STA_VIF;
+ avp->primary_sta_vif = true;
+ memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
+ common->curaid = bss_conf->aid;
+ ath9k_hw_write_associd(sc->sc_ah);
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Bss Info ASSOC %d, bssid: %pM\n",
+ bss_conf->aid, common->curbssid);
+ ath_beacon_config(sc, vif);
+ /*
+ * Request a re-configuration of Beacon related timers
+ * on the receipt of the first Beacon frame (i.e.,
+ * after time sync with the AP).
+ */
+ sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
+ /* Reset rssi stats */
+ sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
+
+ sc->sc_flags |= SC_OP_ANI_RUN;
+ ath_start_ani(common);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void ath9k_config_bss(struct ath_softc *sc, struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+ struct ath_vif *avp = (void *)vif->drv_priv;
+
+ /* Reconfigure bss info */
+ if (avp->primary_sta_vif && !bss_conf->assoc) {
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Bss Info DISASSOC %d, bssid %pM\n",
+ common->curaid, common->curbssid);
+ sc->sc_flags &= ~(SC_OP_PRIM_STA_VIF | SC_OP_BEACONS);
+ avp->primary_sta_vif = false;
+ memset(common->curbssid, 0, ETH_ALEN);
+ common->curaid = 0;
+ }
+
+ ieee80211_iterate_active_interfaces_atomic(
+ sc->hw, ath9k_bss_iter, sc);
+
+ /*
+ * None of station vifs are associated.
+ * Clear bssid & aid
+ */
+ if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) &&
+ !(sc->sc_flags & SC_OP_PRIM_STA_VIF)) {
+ ath9k_hw_write_associd(sc->sc_ah);
+ /* Stop ANI */
+ sc->sc_flags &= ~SC_OP_ANI_RUN;
+ del_timer_sync(&common->ani.timer);
+ }
+}
static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
@@ -1893,7 +2036,6 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
u32 changed)
{
struct ath_softc *sc = hw->priv;
- struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_vif *avp = (void *)vif->drv_priv;
@@ -1904,20 +2046,10 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
mutex_lock(&sc->mutex);
if (changed & BSS_CHANGED_BSSID) {
- /* Set BSSID */
- memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
- memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
- common->curaid = 0;
- ath9k_hw_write_associd(ah);
-
- /* Set aggregation protection mode parameters */
- sc->config.ath_aggr_prot = 0;
+ ath9k_config_bss(sc, vif);
ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
common->curbssid, common->curaid);
-
- /* need to reconfigure the beacon */
- sc->sc_flags &= ~SC_OP_BEACONS ;
}
/* Enable transmission of beacons (AP, IBSS, MESH) */
@@ -1958,7 +2090,6 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
}
if (changed & BSS_CHANGED_BEACON_INT) {
- cur_conf->beacon_interval = bss_conf->beacon_int;
/*
* In case of AP mode, the HW TSF has to be reset
* when the beacon interval changes.
@@ -1970,9 +2101,8 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
if (!error)
ath_beacon_config(sc, vif);
ath9k_set_beaconing_status(sc, true);
- } else {
+ } else
ath_beacon_config(sc, vif);
- }
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
@@ -1994,12 +2124,6 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
}
- if (changed & BSS_CHANGED_ASSOC) {
- ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
- bss_conf->assoc);
- ath9k_bss_assoc_info(sc, hw, vif, bss_conf);
- }
-
mutex_unlock(&sc->mutex);
ath9k_ps_restore(sc);
}
@@ -2145,10 +2269,9 @@ static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
struct ath_common *common = ath9k_hw_common(ah);
int timeout = 200; /* ms */
int i, j;
+ bool drain_txq;
- ath9k_ps_wakeup(sc);
mutex_lock(&sc->mutex);
-
cancel_delayed_work_sync(&sc->tx_complete_work);
if (sc->sc_flags & SC_OP_INVALID) {
@@ -2161,7 +2284,7 @@ static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
timeout = 1;
for (j = 0; j < timeout; j++) {
- int npend = 0;
+ bool npend = false;
if (j)
usleep_range(1000, 2000);
@@ -2170,22 +2293,43 @@ static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
if (!ATH_TXQ_SETUP(sc, i))
continue;
- npend += ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
+ npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
+
+ if (npend)
+ break;
}
if (!npend)
goto out;
}
- if (!ath_drain_all_txq(sc, false))
+ ath9k_ps_wakeup(sc);
+ spin_lock_bh(&sc->sc_pcu_lock);
+ drain_txq = ath_drain_all_txq(sc, false);
+ spin_unlock_bh(&sc->sc_pcu_lock);
+ if (!drain_txq)
ath_reset(sc, false);
-
+ ath9k_ps_restore(sc);
ieee80211_wake_queues(hw);
out:
ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
mutex_unlock(&sc->mutex);
- ath9k_ps_restore(sc);
+}
+
+static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+ int i;
+
+ for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
+ if (!ATH_TXQ_SETUP(sc, i))
+ continue;
+
+ if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
+ return true;
+ }
+ return false;
}
struct ieee80211_ops ath9k_ops = {
@@ -2199,6 +2343,7 @@ struct ieee80211_ops ath9k_ops = {
.configure_filter = ath9k_configure_filter,
.sta_add = ath9k_sta_add,
.sta_remove = ath9k_sta_remove,
+ .sta_notify = ath9k_sta_notify,
.conf_tx = ath9k_conf_tx,
.bss_info_changed = ath9k_bss_info_changed,
.set_key = ath9k_set_key,
@@ -2210,4 +2355,5 @@ struct ieee80211_ops ath9k_ops = {
.rfkill_poll = ath9k_rfkill_poll_state,
.set_coverage_class = ath9k_set_coverage_class,
.flush = ath9k_flush,
+ .tx_frames_pending = ath9k_tx_frames_pending,
};
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-28 11:04:41 +0000