mac80211: fix ad-hoc mode performance regression
[openwrt.git] / package / mac80211 / patches / 300-pending_work.patch
index 0900596..87a30ef 100644 (file)
+--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+@@ -510,7 +510,11 @@ int ath9k_hw_process_rxdesc_edma(struct 
+                */
+               if (rxsp->status11 & AR_CRCErr)
+                       rxs->rs_status |= ATH9K_RXERR_CRC;
+-              else if (rxsp->status11 & AR_PHYErr) {
++              else if (rxsp->status11 & AR_DecryptCRCErr)
++                      rxs->rs_status |= ATH9K_RXERR_DECRYPT;
++              else if (rxsp->status11 & AR_MichaelErr)
++                      rxs->rs_status |= ATH9K_RXERR_MIC;
++              if (rxsp->status11 & AR_PHYErr) {
+                       phyerr = MS(rxsp->status11, AR_PHYErrCode);
+                       /*
+                        * If we reach a point here where AR_PostDelimCRCErr is
+@@ -532,11 +536,7 @@ int ath9k_hw_process_rxdesc_edma(struct 
+                               rxs->rs_status |= ATH9K_RXERR_PHY;
+                               rxs->rs_phyerr = phyerr;
+                       }
+-
+-              } else if (rxsp->status11 & AR_DecryptCRCErr)
+-                      rxs->rs_status |= ATH9K_RXERR_DECRYPT;
+-              else if (rxsp->status11 & AR_MichaelErr)
+-                      rxs->rs_status |= ATH9K_RXERR_MIC;
++              };
+       }
+       if (rxsp->status11 & AR_KeyMiss)
+--- a/drivers/net/wireless/ath/carl9170/tx.c
++++ b/drivers/net/wireless/ath/carl9170/tx.c
+@@ -1236,6 +1236,7 @@ static bool carl9170_tx_ps_drop(struct a
+ {
+       struct ieee80211_sta *sta;
+       struct carl9170_sta_info *sta_info;
++      struct ieee80211_tx_info *tx_info;
+       rcu_read_lock();
+       sta = __carl9170_get_tx_sta(ar, skb);
+@@ -1243,12 +1244,13 @@ static bool carl9170_tx_ps_drop(struct a
+               goto out_rcu;
+       sta_info = (void *) sta->drv_priv;
+-      if (unlikely(sta_info->sleeping)) {
+-              struct ieee80211_tx_info *tx_info;
++      tx_info = IEEE80211_SKB_CB(skb);
++      if (unlikely(sta_info->sleeping) &&
++          !(tx_info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
++                              IEEE80211_TX_CTL_CLEAR_PS_FILT))) {
+               rcu_read_unlock();
+-              tx_info = IEEE80211_SKB_CB(skb);
+               if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
+                       atomic_dec(&ar->tx_ampdu_upload);
+--- a/drivers/net/wireless/iwlegacy/4965-mac.c
++++ b/drivers/net/wireless/iwlegacy/4965-mac.c
+@@ -1694,7 +1694,7 @@ il4965_tx_skb(struct il_priv *il, struct
+               sta_priv = (void *)sta->drv_priv;
+       if (sta_priv && sta_priv->asleep &&
+-          (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) {
++          (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) {
+               /*
+                * This sends an asynchronous command to the device,
+                * but we can rely on it being processed before the
+--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
++++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+@@ -322,7 +322,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv,
+               sta_priv = (void *)info->control.sta->drv_priv;
+       if (sta_priv && sta_priv->asleep &&
+-          (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) {
++          (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) {
+               /*
+                * This sends an asynchronous command to the device,
+                * but we can rely on it being processed before the
+@@ -331,6 +331,10 @@ int iwlagn_tx_skb(struct iwl_priv *priv,
+                * counter.
+                * For now set the counter to just 1 since we do not
+                * support uAPSD yet.
++               *
++               * FIXME: If we get two non-bufferable frames one
++               * after the other, we might only send out one of
++               * them because this is racy.
+                */
+               iwl_sta_modify_sleep_tx_count(priv, sta_id, 1);
+       }
+--- a/drivers/net/wireless/p54/txrx.c
++++ b/drivers/net/wireless/p54/txrx.c
+@@ -690,7 +690,7 @@ static void p54_tx_80211_header(struct p
+       if (!(info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
+               *flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
+-      if (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)
++      if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)
+               *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
+       if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -341,9 +341,9 @@ struct ieee80211_bss_conf {
+  *    used to indicate that a frame was already retried due to PS
+  * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
+  *    used to indicate frame should not be encrypted
+- * @IEEE80211_TX_CTL_POLL_RESPONSE: This frame is a response to a poll
+- *    frame (PS-Poll or uAPSD) and should be sent although the station
+- *    is in powersave mode.
++ * @IEEE80211_TX_CTL_NO_PS_BUFFER: This frame is a response to a poll
++ *    frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must
++ *    be sent although the station is in powersave mode.
+  * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the
+  *    transmit function after the current frame, this can be used
+  *    by drivers to kick the DMA queue only if unset or when the
+@@ -399,7 +399,7 @@ enum mac80211_tx_control_flags {
+       IEEE80211_TX_INTFL_NEED_TXPROCESSING    = BIT(14),
+       IEEE80211_TX_INTFL_RETRIED              = BIT(15),
+       IEEE80211_TX_INTFL_DONT_ENCRYPT         = BIT(16),
+-      IEEE80211_TX_CTL_POLL_RESPONSE          = BIT(17),
++      IEEE80211_TX_CTL_NO_PS_BUFFER           = BIT(17),
+       IEEE80211_TX_CTL_MORE_FRAMES            = BIT(18),
+       IEEE80211_TX_INTFL_RETRANSMISSION       = BIT(19),
+       /* hole at 20, use later */
+@@ -425,7 +425,7 @@ enum mac80211_tx_control_flags {
+       IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU |           \
+       IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK |               \
+       IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK |           \
+-      IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_POLL_RESPONSE |   \
++      IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_NO_PS_BUFFER |    \
+       IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC |                \
+       IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP)
+@@ -1634,7 +1634,7 @@ void ieee80211_free_txskb(struct ieee802
+  * the station sends a PS-Poll or a uAPSD trigger frame, mac80211
+  * will inform the driver of this with the @allow_buffered_frames
+  * callback; this callback is optional. mac80211 will then transmit
+- * the frames as usual and set the %IEEE80211_TX_CTL_POLL_RESPONSE
++ * the frames as usual and set the %IEEE80211_TX_CTL_NO_PS_BUFFER
+  * on each frame. The last frame in the service period (or the only
+  * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to
+  * indicate that it ends the service period; as this frame must have
+@@ -1642,6 +1642,9 @@ void ieee80211_free_txskb(struct ieee802
+  * When TX status is reported for this frame, the service period is
+  * marked has having ended and a new one can be started by the peer.
+  *
++ * Additionally, non-bufferable MMPDUs can also be transmitted by
++ * mac80211 with the %IEEE80211_TX_CTL_NO_PS_BUFFER set in them.
++ *
+  * Another race condition can happen on some devices like iwlwifi
+  * when there are frames queued for the station and it wakes up
+  * or polls; the frames that are already queued could end up being
+@@ -2140,7 +2143,7 @@ enum ieee80211_frame_release_type {
+  * @allow_buffered_frames: Prepare device to allow the given number of frames
+  *    to go out to the given station. The frames will be sent by mac80211
+  *    via the usual TX path after this call. The TX information for frames
+- *    released will also have the %IEEE80211_TX_CTL_POLL_RESPONSE flag set
++ *    released will also have the %IEEE80211_TX_CTL_NO_PS_BUFFER flag set
+  *    and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case
+  *    frames from multiple TIDs are released and the driver might reorder
+  *    them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag
 --- a/net/mac80211/agg-rx.c
 +++ b/net/mac80211/agg-rx.c
-@@ -176,6 +176,8 @@ static void ieee80211_send_addba_resp(st
-               memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
-       else if (sdata->vif.type == NL80211_IFTYPE_STATION)
+@@ -187,6 +187,8 @@ static void ieee80211_send_addba_resp(st
                memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
+       else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
+               memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
 +      else if (sdata->vif.type == NL80211_IFTYPE_WDS)
 +              memcpy(mgmt->bssid, da, ETH_ALEN);
  
        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                          IEEE80211_STYPE_ACTION);
-@@ -262,7 +264,11 @@ void ieee80211_process_addba_request(str
-                               "%pM on tid %u\n",
-                               mgmt->sa, tid);
- #endif /* CONFIG_MAC80211_HT_DEBUG */
--              goto end;
-+
-+              /* delete existing Rx BA session on the same tid */
-+              ___ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
-+                                              WLAN_STATUS_UNSPECIFIED_QOS,
-+                                              false);
-       }
-       /* prepare A-MPDU MLME for Rx aggregation */
 --- a/net/mac80211/agg-tx.c
 +++ b/net/mac80211/agg-tx.c
-@@ -79,7 +79,8 @@ static void ieee80211_send_addba_request
-       memcpy(mgmt->da, da, ETH_ALEN);
+@@ -81,7 +81,8 @@ static void ieee80211_send_addba_request
        memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
        if (sdata->vif.type == NL80211_IFTYPE_AP ||
--          sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
-+          sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+           sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+-          sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
++          sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
 +          sdata->vif.type == NL80211_IFTYPE_WDS)
                memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
        else if (sdata->vif.type == NL80211_IFTYPE_STATION)
                memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
-@@ -398,7 +399,8 @@ int ieee80211_start_tx_ba_session(struct
-        */
-       if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+@@ -471,6 +472,7 @@ int ieee80211_start_tx_ba_session(struct
+           sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
            sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
--          sdata->vif.type != NL80211_IFTYPE_AP)
-+          sdata->vif.type != NL80211_IFTYPE_AP &&
-+          sdata->vif.type != NL80211_IFTYPE_WDS)
+           sdata->vif.type != NL80211_IFTYPE_AP &&
++          sdata->vif.type != NL80211_IFTYPE_WDS &&
+           sdata->vif.type != NL80211_IFTYPE_ADHOC)
                return -EINVAL;
  
-       if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
 --- a/net/mac80211/debugfs_sta.c
 +++ b/net/mac80211/debugfs_sta.c
-@@ -59,7 +59,7 @@ static ssize_t sta_flags_read(struct fil
-       char buf[100];
-       struct sta_info *sta = file->private_data;
-       u32 staflags = get_sta_flags(sta);
--      int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
-+      int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s",
-               staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
-               staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
-               staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
-@@ -67,7 +67,6 @@ static ssize_t sta_flags_read(struct fil
-               staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
-               staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
-               staflags & WLAN_STA_WME ? "WME\n" : "",
--              staflags & WLAN_STA_WDS ? "WDS\n" : "",
-               staflags & WLAN_STA_MFP ? "MFP\n" : "");
-       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
- }
+@@ -63,11 +63,11 @@ static ssize_t sta_flags_read(struct fil
+       test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
+       int res = scnprintf(buf, sizeof(buf),
+-                          "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
++                          "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+                           TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
+                           TEST(PS_DRIVER), TEST(AUTHORIZED),
+                           TEST(SHORT_PREAMBLE),
+-                          TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
++                          TEST(WME), TEST(CLEAR_PS_FILT),
+                           TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
+                           TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
+                           TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
 --- a/net/mac80211/iface.c
 +++ b/net/mac80211/iface.c
 @@ -178,7 +178,6 @@ static int ieee80211_do_open(struct net_
        u32 changed = 0;
        int res;
        u32 hw_reconf_flags = 0;
-@@ -290,27 +289,6 @@ static int ieee80211_do_open(struct net_
+@@ -309,28 +308,6 @@ static int ieee80211_do_open(struct net_
  
        set_bit(SDATA_STATE_RUNNING, &sdata->state);
  
 -                      goto err_del_interface;
 -              }
 -
--              /* no locking required since STA is not live yet */
--              sta->flags |= WLAN_STA_AUTHORIZED;
+-              sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+-              sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
+-              sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
 -
 -              res = sta_info_insert(sta);
 -              if (res) {
        /*
         * set_multicast_list will be invoked by the networking core
         * which will check whether any increments here were done in
-@@ -344,8 +322,7 @@ static int ieee80211_do_open(struct net_
+@@ -357,8 +334,7 @@ static int ieee80211_do_open(struct net_
        netif_tx_start_all_queues(dev);
  
        return 0;
 - err_del_interface:
--      drv_remove_interface(local, &sdata->vif);
+-      drv_remove_interface(local, sdata);
 +
   err_stop:
        if (!local->open_count)
                drv_stop(local);
-@@ -718,6 +695,70 @@ static void ieee80211_if_setup(struct ne
+@@ -722,6 +698,70 @@ static void ieee80211_if_setup(struct ne
        dev->destructor = free_netdev;
  }
  
 +      sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
 +
 +      if (elems.ht_cap_elem)
-+              ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
++              ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 +                              elems.ht_cap_elem, &sta->sta.ht_cap);
 +
 +      if (elems.wmm_param)
-+              set_sta_flags(sta, WLAN_STA_WME);
++              set_sta_flag(sta, WLAN_STA_WME);
 +
 +      if (new) {
-+              sta->flags = WLAN_STA_AUTHORIZED;
++              set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 +              rate_control_rate_init(sta);
 +              sta_info_insert_rcu(sta);
 +      }
  static void ieee80211_iface_work(struct work_struct *work)
  {
        struct ieee80211_sub_if_data *sdata =
-@@ -822,6 +863,9 @@ static void ieee80211_iface_work(struct 
+@@ -826,6 +866,9 @@ static void ieee80211_iface_work(struct 
                                break;
                        ieee80211_mesh_rx_queued_mgmt(sdata, skb);
                        break;
                        break;
 --- a/net/mac80211/rx.c
 +++ b/net/mac80211/rx.c
-@@ -2137,7 +2137,8 @@ ieee80211_rx_h_action(struct ieee80211_r
-                */
-               if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+@@ -2282,6 +2282,7 @@ ieee80211_rx_h_action(struct ieee80211_r
+                   sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
                    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
--                  sdata->vif.type != NL80211_IFTYPE_AP)
-+                  sdata->vif.type != NL80211_IFTYPE_AP &&
-+                  sdata->vif.type != NL80211_IFTYPE_WDS)
+                   sdata->vif.type != NL80211_IFTYPE_AP &&
++                  sdata->vif.type != NL80211_IFTYPE_WDS &&
+                   sdata->vif.type != NL80211_IFTYPE_ADHOC)
                        break;
  
-               /* verify action_code is present */
-@@ -2335,13 +2336,14 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_
+@@ -2492,14 +2493,15 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_
  
        if (!ieee80211_vif_is_mesh(&sdata->vif) &&
            sdata->vif.type != NL80211_IFTYPE_ADHOC &&
                return RX_DROP_MONITOR;
  
        switch (stype) {
+       case cpu_to_le16(IEEE80211_STYPE_AUTH):
        case cpu_to_le16(IEEE80211_STYPE_BEACON):
        case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
 -              /* process for all: mesh, mlme, ibss */
 +              /* process for all: mesh, mlme, ibss, wds */
                break;
-       case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
-       case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
-@@ -2680,10 +2682,16 @@ static int prepare_for_handlers(struct i
+       case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
+       case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
+@@ -2853,10 +2855,16 @@ static int prepare_for_handlers(struct i
                }
                break;
        case NL80211_IFTYPE_WDS:
                break;
        default:
                /* should never get here */
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -1050,7 +1050,7 @@ static void ieee80211_send_null_response
+        * exchange. Also set EOSP to indicate this packet
+        * ends the poll/service period.
+        */
+-      info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE |
++      info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
+                      IEEE80211_TX_STATUS_EOSP |
+                      IEEE80211_TX_CTL_REQ_TX_STATUS;
+@@ -1177,7 +1177,7 @@ ieee80211_sta_ps_deliver_response(struct
+                        * STA may still remain is PS mode after this frame
+                        * exchange.
+                        */
+-                      info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE;
++                      info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
+                       /*
+                        * Use MoreData flag to indicate whether there are
 --- a/net/mac80211/sta_info.h
 +++ b/net/mac80211/sta_info.h
 @@ -31,7 +31,6 @@
+  * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
   *    frames.
-  * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP.
   * @WLAN_STA_WME: Station is a QoS-STA.
 - * @WLAN_STA_WDS: Station is one of our WDS peers.
   * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
   *    IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
   *    frame to this station is transmitted.
-@@ -54,7 +53,6 @@ enum ieee80211_sta_info_flags {
-       WLAN_STA_SHORT_PREAMBLE = 1<<4,
-       WLAN_STA_ASSOC_AP       = 1<<5,
-       WLAN_STA_WME            = 1<<6,
--      WLAN_STA_WDS            = 1<<7,
-       WLAN_STA_CLEAR_PS_FILT  = 1<<9,
-       WLAN_STA_MFP            = 1<<10,
-       WLAN_STA_BLOCK_BA       = 1<<11,
---- a/drivers/net/wireless/ath/ath9k/beacon.c
-+++ b/drivers/net/wireless/ath/ath9k/beacon.c
-@@ -384,7 +384,9 @@ void ath_beacon_tasklet(unsigned long da
-                       ath_dbg(common, ATH_DBG_BSTUCK,
-                               "beacon is officially stuck\n");
-                       sc->sc_flags |= SC_OP_TSF_RESET;
-+                      spin_lock(&sc->sc_pcu_lock);
-                       ath_reset(sc, true);
-+                      spin_unlock(&sc->sc_pcu_lock);
-               }
-               return;
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -617,8 +617,11 @@ void ath_hw_check(struct work_struct *wo
-       ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
-               "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
-       if (busy >= 99) {
--              if (++sc->hw_busy_count >= 3)
-+              if (++sc->hw_busy_count >= 3) {
-+                      spin_lock_bh(&sc->sc_pcu_lock);
-                       ath_reset(sc, true);
-+                      spin_unlock_bh(&sc->sc_pcu_lock);
+@@ -62,7 +61,6 @@ enum ieee80211_sta_info_flags {
+       WLAN_STA_AUTHORIZED,
+       WLAN_STA_SHORT_PREAMBLE,
+       WLAN_STA_WME,
+-      WLAN_STA_WDS,
+       WLAN_STA_CLEAR_PS_FILT,
+       WLAN_STA_MFP,
+       WLAN_STA_BLOCK_BA,
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -448,18 +448,23 @@ ieee80211_tx_h_unicast_ps_buf(struct iee
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+       struct ieee80211_local *local = tx->local;
+-      if (unlikely(!sta ||
+-                   ieee80211_is_probe_resp(hdr->frame_control) ||
+-                   ieee80211_is_auth(hdr->frame_control) ||
+-                   ieee80211_is_assoc_resp(hdr->frame_control) ||
+-                   ieee80211_is_reassoc_resp(hdr->frame_control)))
++      if (unlikely(!sta))
+               return TX_CONTINUE;
+       if (unlikely((test_sta_flag(sta, WLAN_STA_PS_STA) ||
+                     test_sta_flag(sta, WLAN_STA_PS_DRIVER)) &&
+-                   !(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE))) {
++                   !(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER))) {
+               int ac = skb_get_queue_mapping(tx->skb);
++              /* only deauth, disassoc and action are bufferable MMPDUs */
++              if (ieee80211_is_mgmt(hdr->frame_control) &&
++                  !ieee80211_is_deauth(hdr->frame_control) &&
++                  !ieee80211_is_disassoc(hdr->frame_control) &&
++                  !ieee80211_is_action(hdr->frame_control)) {
++                      info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
++                      return TX_CONTINUE;
 +              }
-       } else if (busy >= 0)
-               sc->hw_busy_count = 0;
-@@ -637,7 +640,9 @@ static void ath_hw_pll_rx_hang_check(str
-                       /* Rx is hung for more than 500ms. Reset it */
-                       ath_dbg(common, ATH_DBG_RESET,
-                               "Possible RX hang, resetting");
-+                      spin_lock_bh(&sc->sc_pcu_lock);
-                       ath_reset(sc, true);
-+                      spin_unlock_bh(&sc->sc_pcu_lock);
-                       count = 0;
-               }
-       } else
-@@ -674,7 +679,9 @@ void ath9k_tasklet(unsigned long data)
-       if ((status & ATH9K_INT_FATAL) ||
-           (status & ATH9K_INT_BB_WATCHDOG)) {
-+              spin_lock(&sc->sc_pcu_lock);
-               ath_reset(sc, true);
-+              spin_unlock(&sc->sc_pcu_lock);
-               return;
-       }
-@@ -980,7 +987,6 @@ int ath_reset(struct ath_softc *sc, bool
-       del_timer_sync(&common->ani.timer);
-       ath9k_ps_wakeup(sc);
--      spin_lock_bh(&sc->sc_pcu_lock);
-       ieee80211_stop_queues(hw);
-@@ -1023,7 +1029,6 @@ int ath_reset(struct ath_softc *sc, bool
-       }
-       ieee80211_wake_queues(hw);
--      spin_unlock_bh(&sc->sc_pcu_lock);
-       /* Start ANI */
-       if (!common->disable_ani)
-@@ -2326,9 +2331,9 @@ static void ath9k_flush(struct ieee80211
-       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);
-+      spin_unlock_bh(&sc->sc_pcu_lock);
-       ath9k_ps_restore(sc);
-       ieee80211_wake_queues(hw);
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -565,11 +565,8 @@ static void ath_tx_complete_aggr(struct 
-       rcu_read_unlock();
--      if (needreset) {
--              spin_unlock_bh(&sc->sc_pcu_lock);
-+      if (needreset)
-               ath_reset(sc, false);
--              spin_lock_bh(&sc->sc_pcu_lock);
--      }
- }
- static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
-@@ -664,7 +661,8 @@ static int ath_compute_num_delims(struct
-        * TODO - this could be improved to be dependent on the rate.
-        *      The hardware can keep up at lower rates, but not higher rates
-        */
--      if (fi->keyix != ATH9K_TXKEYIX_INVALID)
-+      if ((fi->keyix != ATH9K_TXKEYIX_INVALID) &&
-+          !(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))
-               ndelim += ATH_AGGR_ENCRYPTDELIM;
-       /*
-@@ -2169,7 +2167,9 @@ static void ath_tx_complete_poll_work(st
-       if (needreset) {
-               ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
-                       "tx hung, resetting the chip\n");
-+              spin_lock_bh(&sc->sc_pcu_lock);
-               ath_reset(sc, true);
-+              spin_unlock_bh(&sc->sc_pcu_lock);
-       }
-       ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
---- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
-+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
-@@ -236,7 +236,7 @@ static void ar9003_paprd_get_gain_table(
-       memset(entry, 0, sizeof(ah->paprd_gain_table_entries));
-       memset(index, 0, sizeof(ah->paprd_gain_table_index));
--      for (i = 0; i < 32; i++) {
-+      for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) {
-               entry[i] = REG_READ(ah, reg);
-               index[i] = (entry[i] >> 24) & 0xff;
-               reg += 4;
-@@ -246,13 +246,13 @@ static void ar9003_paprd_get_gain_table(
- static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain,
-                                           int target_power)
- {
--      int olpc_gain_delta = 0;
-+      int olpc_gain_delta = 0, cl_gain_mod;
-       int alpha_therm, alpha_volt;
-       int therm_cal_value, volt_cal_value;
-       int therm_value, volt_value;
-       int thermal_gain_corr, voltage_gain_corr;
-       int desired_scale, desired_gain = 0;
--      u32 reg;
-+      u32 reg_olpc  = 0, reg_cl_gain  = 0;
-       REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
-                   AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
-@@ -271,15 +271,29 @@ static unsigned int ar9003_get_desired_g
-       volt_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4,
-                                   AR_PHY_BB_THERM_ADC_4_LATEST_VOLT_VALUE);
--      if (chain == 0)
--              reg = AR_PHY_TPC_11_B0;
--      else if (chain == 1)
--              reg = AR_PHY_TPC_11_B1;
--      else
--              reg = AR_PHY_TPC_11_B2;
-+      switch (chain) {
-+      case 0:
-+              reg_olpc = AR_PHY_TPC_11_B0;
-+              reg_cl_gain = AR_PHY_CL_TAB_0;
-+              break;
-+      case 1:
-+              reg_olpc = AR_PHY_TPC_11_B1;
-+              reg_cl_gain = AR_PHY_CL_TAB_1;
-+              break;
-+      case 2:
-+              reg_olpc = AR_PHY_TPC_11_B2;
-+              reg_cl_gain = AR_PHY_CL_TAB_2;
-+              break;
-+      default:
-+              ath_dbg(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
-+              "Invalid chainmask: %d\n", chain);
-+              break;
-+      }
--      olpc_gain_delta = REG_READ_FIELD(ah, reg,
-+      olpc_gain_delta = REG_READ_FIELD(ah, reg_olpc,
-                                        AR_PHY_TPC_11_OLPC_GAIN_DELTA);
-+      cl_gain_mod = REG_READ_FIELD(ah, reg_cl_gain,
-+                                       AR_PHY_CL_TAB_CL_GAIN_MOD);
-       if (olpc_gain_delta >= 128)
-               olpc_gain_delta = olpc_gain_delta - 256;
-@@ -289,7 +303,7 @@ static unsigned int ar9003_get_desired_g
-       voltage_gain_corr = (alpha_volt * (volt_value - volt_cal_value) +
-                            (128 / 2)) / 128;
-       desired_gain = target_power - olpc_gain_delta - thermal_gain_corr -
--          voltage_gain_corr + desired_scale;
-+          voltage_gain_corr + desired_scale + cl_gain_mod;
-       return desired_gain;
- }
-@@ -727,7 +741,7 @@ int ar9003_paprd_setup_gain_table(struct
-       desired_gain = ar9003_get_desired_gain(ah, chain, train_power);
-       gain_index = 0;
--      for (i = 0; i < 32; i++) {
-+      for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) {
-               if (ah->paprd_gain_table_index[i] >= desired_gain)
-                       break;
-               gain_index++;
---- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
-+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
-@@ -1121,6 +1121,9 @@
- #define AR_PHY_POWERTX_RATE8_POWERTXHT40_5    0x3F00
- #define AR_PHY_POWERTX_RATE8_POWERTXHT40_5_S  8
-+#define AR_PHY_CL_TAB_CL_GAIN_MOD             0x1f
-+#define AR_PHY_CL_TAB_CL_GAIN_MOD_S           0
 +
- void ar9003_hw_set_chain_masks(struct ath_hw *ah, u8 rx, u8 tx);
- #endif  /* AR9003_PHY_H */
+ #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+               printk(KERN_DEBUG "STA %pM aid %d: PS buffer for AC %d\n",
+                      sta->sta.addr, sta->sta.aid, ac);
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -480,7 +480,7 @@ struct ieee80211_if_ibss {
+       bool control_port;
+-      u8 bssid[ETH_ALEN];
++      u8 bssid[ETH_ALEN] __aligned(2);
+       u8 ssid[IEEE80211_MAX_SSID_LEN];
+       u8 ssid_len, ie_len;
+       u8 *ie;