+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1231,34 +1231,40 @@ static bool ieee80211_tx_frags(struct ie
+ if (local->queue_stop_reasons[q] ||
+ (!txpending && !skb_queue_empty(&local->pending[q]))) {
+ if (unlikely(info->flags &
+- IEEE80211_TX_INTFL_OFFCHAN_TX_OK &&
+- local->queue_stop_reasons[q] &
+- ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL))) {
++ IEEE80211_TX_INTFL_OFFCHAN_TX_OK)) {
++ if (local->queue_stop_reasons[q] &
++ ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL)) {
++ /*
++ * Drop off-channel frames if queues
++ * are stopped for any reason other
++ * than off-channel operation. Never
++ * queue them.
++ */
++ spin_unlock_irqrestore(
++ &local->queue_stop_reason_lock,
++ flags);
++ ieee80211_purge_tx_queue(&local->hw,
++ skbs);
++ return true;
++ }
++ } else {
++
+ /*
+- * Drop off-channel frames if queues are stopped
+- * for any reason other than off-channel
+- * operation. Never queue them.
++ * Since queue is stopped, queue up frames for
++ * later transmission from the tx-pending
++ * tasklet when the queue is woken again.
+ */
+- spin_unlock_irqrestore(
+- &local->queue_stop_reason_lock, flags);
+- ieee80211_purge_tx_queue(&local->hw, skbs);
+- return true;
++ if (txpending)
++ skb_queue_splice_init(skbs,
++ &local->pending[q]);
++ else
++ skb_queue_splice_tail_init(skbs,
++ &local->pending[q]);
++
++ spin_unlock_irqrestore(&local->queue_stop_reason_lock,
++ flags);
++ return false;
+ }
+-
+- /*
+- * Since queue is stopped, queue up frames for later
+- * transmission from the tx-pending tasklet when the
+- * queue is woken again.
+- */
+- if (txpending)
+- skb_queue_splice_init(skbs, &local->pending[q]);
+- else
+- skb_queue_splice_tail_init(skbs,
+- &local->pending[q]);
+-
+- spin_unlock_irqrestore(&local->queue_stop_reason_lock,
+- flags);
+- return false;
+ }
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+
+@@ -1848,9 +1854,24 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ }
+
+ if (!is_multicast_ether_addr(skb->data)) {
++ struct sta_info *next_hop;
++ bool mpp_lookup = true;
++
+ mpath = mesh_path_lookup(sdata, skb->data);
+- if (!mpath)
++ if (mpath) {
++ mpp_lookup = false;
++ next_hop = rcu_dereference(mpath->next_hop);
++ if (!next_hop ||
++ !(mpath->flags & (MESH_PATH_ACTIVE |
++ MESH_PATH_RESOLVING)))
++ mpp_lookup = true;
++ }
++
++ if (mpp_lookup)
+ mppath = mpp_path_lookup(sdata, skb->data);
++
++ if (mppath && mpath)
++ mesh_path_del(mpath->sdata, mpath->dst);
+ }
+
+ /*
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -554,16 +554,9 @@ static int nl80211_msg_put_channel(struc
+ if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
+ goto nla_put_failure;
+- if (chan->flags & IEEE80211_CHAN_RADAR) {
+- u32 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
+- if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
+- goto nla_put_failure;
+- if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
+- chan->dfs_state))
+- goto nla_put_failure;
+- if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, time))
+- goto nla_put_failure;
+- }
++ if ((chan->flags & IEEE80211_CHAN_RADAR) &&
++ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
++ goto nla_put_failure;
+ if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
+ nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
+ goto nla_put_failure;
+@@ -900,9 +893,6 @@ static int nl80211_put_iface_combination
+ nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
+ c->max_interfaces))
+ goto nla_put_failure;
+- if (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
+- c->radar_detect_widths))
+- goto nla_put_failure;
+
+ nla_nest_end(msg, nl_combi);
+ }
+@@ -914,48 +904,6 @@ nla_put_failure:
+ return -ENOBUFS;
+ }
+
+-#ifdef CONFIG_PM
+-static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
+- struct sk_buff *msg)
+-{
+- const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
+- struct nlattr *nl_tcp;
+-
+- if (!tcp)
+- return 0;
+-
+- nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
+- if (!nl_tcp)
+- return -ENOBUFS;
+-
+- if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
+- tcp->data_payload_max))
+- return -ENOBUFS;
+-
+- if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
+- tcp->data_payload_max))
+- return -ENOBUFS;
+-
+- if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
+- return -ENOBUFS;
+-
+- if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
+- sizeof(*tcp->tok), tcp->tok))
+- return -ENOBUFS;
+-
+- if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
+- tcp->data_interval_max))
+- return -ENOBUFS;
+-
+- if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
+- tcp->wake_payload_max))
+- return -ENOBUFS;
+-
+- nla_nest_end(msg, nl_tcp);
+- return 0;
+-}
+-#endif
+-
+ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
+ struct cfg80211_registered_device *dev)
+ {
+@@ -1330,9 +1278,6 @@ static int nl80211_send_wiphy(struct sk_
+ goto nla_put_failure;
+ }
+
+- if (nl80211_send_wowlan_tcp_caps(dev, msg))
+- goto nla_put_failure;
+-
+ nla_nest_end(msg, nl_wowlan);
+ }
+ #endif
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -3285,13 +3285,19 @@ static int ieee80211_cfg_get_channel(str
+ struct cfg80211_chan_def *chandef)
+ {
+ struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
++ struct ieee80211_local *local = wiphy_priv(wiphy);
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ int ret = -ENODATA;
+
+ rcu_read_lock();
+- chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+- if (chanctx_conf) {
+- *chandef = chanctx_conf->def;
++ if (local->use_chanctx) {
++ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
++ if (chanctx_conf) {
++ *chandef = chanctx_conf->def;
++ ret = 0;
++ }
++ } else if (local->open_count == local->monitors) {
++ *chandef = local->monitor_chandef;
+ ret = 0;
+ }
+ rcu_read_unlock();
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1463,7 +1463,9 @@ static bool ath9k_hw_chip_reset(struct a
+ reset_type = ATH9K_RESET_POWER_ON;
+ else
+ reset_type = ATH9K_RESET_COLD;
+- }
++ } else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) ||
++ (REG_READ(ah, AR_CR) & AR_CR_RXE))
++ reset_type = ATH9K_RESET_COLD;
+
+ if (!ath9k_hw_set_reset_reg(ah, reset_type))
+ return false;
+--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
++++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
+@@ -1236,8 +1236,10 @@ static inline void rt2x00lib_set_if_comb
+ */
+ if_limit = &rt2x00dev->if_limits_ap;
+ if_limit->max = rt2x00dev->ops->max_ap_intf;
+- if_limit->types = BIT(NL80211_IFTYPE_AP) |
+- BIT(NL80211_IFTYPE_MESH_POINT);
++ if_limit->types = BIT(NL80211_IFTYPE_AP);
++#ifdef CONFIG_MAC80211_MESH
++ if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT);
++#endif
+
+ /*
+ * Build up AP interface combinations structure.
+@@ -1309,7 +1311,9 @@ int rt2x00lib_probe_dev(struct rt2x00_de
+ rt2x00dev->hw->wiphy->interface_modes |=
+ BIT(NL80211_IFTYPE_ADHOC) |
+ BIT(NL80211_IFTYPE_AP) |
++#ifdef CONFIG_MAC80211_MESH
+ BIT(NL80211_IFTYPE_MESH_POINT) |
++#endif
+ BIT(NL80211_IFTYPE_WDS);
+
+ rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -26,11 +26,11 @@
+ /* Number of symbols for a packet with (bps) bits per symbol */
+ #define MCS_NSYMS(bps) ((MCS_NBITS + (bps) - 1) / (bps))
+
+-/* Transmission time for a packet containing (syms) symbols */
++/* Transmission time (nanoseconds) for a packet containing (syms) symbols */
+ #define MCS_SYMBOL_TIME(sgi, syms) \
+ (sgi ? \
+- ((syms) * 18 + 4) / 5 : /* syms * 3.6 us */ \
+- (syms) << 2 /* syms * 4 us */ \
++ ((syms) * 18000 + 4000) / 5 : /* syms * 3.6 us */ \
++ ((syms) * 1000) << 2 /* syms * 4 us */ \
+ )
+
+ /* Transmit duration for the raw data part of an average sized packet */
+@@ -64,9 +64,9 @@
+ }
+
+ #define CCK_DURATION(_bitrate, _short, _len) \
+- (10 /* SIFS */ + \
++ (1000 * (10 /* SIFS */ + \
+ (_short ? 72 + 24 : 144 + 48 ) + \
+- (8 * (_len + 4) * 10) / (_bitrate))
++ (8 * (_len + 4) * 10) / (_bitrate)))
+
+ #define CCK_ACK_DURATION(_bitrate, _short) \
+ (CCK_DURATION((_bitrate > 10 ? 20 : 10), false, 60) + \
+@@ -211,7 +211,8 @@ static void
+ minstrel_ht_calc_tp(struct minstrel_ht_sta *mi, int group, int rate)
+ {
+ struct minstrel_rate_stats *mr;
+- unsigned int usecs = 0;
++ unsigned int nsecs = 0;
++ unsigned int tp;
+
+ mr = &mi->groups[group].rates[rate];
+
+@@ -221,10 +222,12 @@ minstrel_ht_calc_tp(struct minstrel_ht_s
+ }
+
+ if (group != MINSTREL_CCK_GROUP)
+- usecs = mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len);
++ nsecs = 1000 * mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len);
+
+- usecs += minstrel_mcs_groups[group].duration[rate];
+- mr->cur_tp = MINSTREL_TRUNC((1000000 / usecs) * mr->probability);
++ nsecs += minstrel_mcs_groups[group].duration[rate];
++ tp = 1000000 * ((mr->probability * 1000) / nsecs);
++
++ mr->cur_tp = MINSTREL_TRUNC(tp);
+ }
+
+ /*
+@@ -308,8 +311,8 @@ minstrel_ht_update_stats(struct minstrel
+ }
+ }
+
+- /* try to sample up to half of the available rates during each interval */
+- mi->sample_count *= 4;
++ /* try to sample all available rates during each interval */
++ mi->sample_count *= 8;
+
+ cur_prob = 0;
+ cur_prob_tp = 0;
+@@ -320,20 +323,13 @@ minstrel_ht_update_stats(struct minstrel
+ if (!mg->supported)
+ continue;
+
+- mr = minstrel_get_ratestats(mi, mg->max_prob_rate);
+- if (cur_prob_tp < mr->cur_tp &&
+- minstrel_mcs_groups[group].streams == 1) {
+- mi->max_prob_rate = mg->max_prob_rate;
+- cur_prob = mr->cur_prob;
+- cur_prob_tp = mr->cur_tp;
+- }
+-
+ mr = minstrel_get_ratestats(mi, mg->max_tp_rate);
+ if (cur_tp < mr->cur_tp) {
+ mi->max_tp_rate2 = mi->max_tp_rate;
+ cur_tp2 = cur_tp;
+ mi->max_tp_rate = mg->max_tp_rate;
+ cur_tp = mr->cur_tp;
++ mi->max_prob_streams = minstrel_mcs_groups[group].streams - 1;
+ }
+
+ mr = minstrel_get_ratestats(mi, mg->max_tp_rate2);
+@@ -343,6 +339,23 @@ minstrel_ht_update_stats(struct minstrel
+ }
+ }
+
++ if (mi->max_prob_streams < 1)
++ mi->max_prob_streams = 1;
++
++ for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
++ mg = &mi->groups[group];
++ if (!mg->supported)
++ continue;
++ mr = minstrel_get_ratestats(mi, mg->max_prob_rate);
++ if (cur_prob_tp < mr->cur_tp &&
++ minstrel_mcs_groups[group].streams <= mi->max_prob_streams) {
++ mi->max_prob_rate = mg->max_prob_rate;
++ cur_prob = mr->cur_prob;
++ cur_prob_tp = mr->cur_tp;
++ }
++ }
++
++
+ mi->stats_update = jiffies;
+ }
+
+@@ -467,7 +480,7 @@ minstrel_ht_tx_status(void *priv, struct
+
+ if (!mi->sample_wait && !mi->sample_tries && mi->sample_count > 0) {
+ mi->sample_wait = 16 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len);
+- mi->sample_tries = 2;
++ mi->sample_tries = 1;
+ mi->sample_count--;
+ }
+
+@@ -536,7 +549,7 @@ minstrel_calc_retransmit(struct minstrel
+ mr->retry_updated = true;
+
+ group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+- tx_time_data = group->duration[index % MCS_GROUP_RATES] * ampdu_len;
++ tx_time_data = group->duration[index % MCS_GROUP_RATES] * ampdu_len / 1000;
+
+ /* Contention time for first 2 tries */
+ ctime = (t_slot * cw) >> 1;
+@@ -616,6 +629,7 @@ minstrel_get_sample_rate(struct minstrel
+ {
+ struct minstrel_rate_stats *mr;
+ struct minstrel_mcs_group_data *mg;
++ unsigned int sample_dur, sample_group;
+ int sample_idx = 0;
+
+ if (mi->sample_wait > 0) {
+@@ -626,11 +640,11 @@ minstrel_get_sample_rate(struct minstrel
+ if (!mi->sample_tries)
+ return -1;
+
+- mi->sample_tries--;
+ mg = &mi->groups[mi->sample_group];
+ sample_idx = sample_table[mg->column][mg->index];
+ mr = &mg->rates[sample_idx];
+- sample_idx += mi->sample_group * MCS_GROUP_RATES;
++ sample_group = mi->sample_group;
++ sample_idx += sample_group * MCS_GROUP_RATES;
+ minstrel_next_sample_idx(mi);
+
+ /*
+@@ -651,14 +665,18 @@ minstrel_get_sample_rate(struct minstrel
+ * Make sure that lower rates get sampled only occasionally,
+ * if the link is working perfectly.
+ */
+- if (minstrel_get_duration(sample_idx) >
+- minstrel_get_duration(mi->max_tp_rate)) {
++ sample_dur = minstrel_get_duration(sample_idx);
++ if (sample_dur >= minstrel_get_duration(mi->max_tp_rate2) &&
++ (mi->max_prob_streams <
++ minstrel_mcs_groups[sample_group].streams ||
++ sample_dur >= minstrel_get_duration(mi->max_prob_rate))) {
+ if (mr->sample_skipped < 20)
+ return -1;
+
+ if (mi->sample_slow++ > 2)
+ return -1;
+ }
++ mi->sample_tries--;
+
+ return sample_idx;
+ }
+--- a/net/mac80211/rc80211_minstrel_ht.h
++++ b/net/mac80211/rc80211_minstrel_ht.h
+@@ -85,6 +85,7 @@ struct minstrel_ht_sta {
+
+ /* best probability rate */
+ unsigned int max_prob_rate;
++ unsigned int max_prob_streams;
+
+ /* time of last status update */
+ unsigned long stats_update;
+--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+@@ -1023,6 +1023,7 @@ static bool ar9003_hw_init_cal(struct at
+ AR_PHY_AGC_CONTROL_FLTR_CAL |
+ AR_PHY_AGC_CONTROL_PKDET_CAL;
+
++ /* Use chip chainmask only for calibration */
+ ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
+
+ if (rtt) {
+@@ -1150,6 +1151,9 @@ skip_tx_iqcal:
+ ar9003_hw_rtt_disable(ah);
+ }
+
++ /* Revert chainmask to runtime parameters */
++ ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
++
+ /* Initialize list pointers */
+ ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
+
+--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+@@ -3606,6 +3606,12 @@ static void ar9003_hw_ant_ctrl_apply(str
+ value = ar9003_hw_ant_ctrl_common_2_get(ah, is2ghz);
+ REG_RMW_FIELD(ah, AR_PHY_SWITCH_COM_2, AR_SWITCH_TABLE_COM2_ALL, value);
+
++ if ((AR_SREV_9462(ah)) && (ah->rxchainmask == 0x2)) {
++ value = ar9003_hw_ant_ctrl_chain_get(ah, 1, is2ghz);
++ REG_RMW_FIELD(ah, switch_chain_reg[0],
++ AR_SWITCH_TABLE_ALL, value);
++ }
++
+ for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
+ if ((ah->rxchainmask & BIT(chain)) ||
+ (ah->txchainmask & BIT(chain))) {
+@@ -3772,6 +3778,17 @@ static void ar9003_hw_atten_apply(struct
+ AR_PHY_EXT_ATTEN_CTL_2,
+ };
+
++ if ((AR_SREV_9462(ah)) && (ah->rxchainmask == 0x2)) {
++ value = ar9003_hw_atten_chain_get(ah, 1, chan);
++ REG_RMW_FIELD(ah, ext_atten_reg[0],
++ AR_PHY_EXT_ATTEN_CTL_XATTEN1_DB, value);
++
++ value = ar9003_hw_atten_chain_get_margin(ah, 1, chan);
++ REG_RMW_FIELD(ah, ext_atten_reg[0],
++ AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN,
++ value);
++ }
++
+ /* Test value. if 0 then attenuation is unused. Don't load anything. */
+ for (i = 0; i < 3; i++) {
+ if (ah->txchainmask & BIT(i)) {
+--- a/drivers/net/wireless/ath/ath9k/link.c
++++ b/drivers/net/wireless/ath/ath9k/link.c
+@@ -28,21 +28,21 @@ void ath_tx_complete_poll_work(struct wo
+ int i;
+ bool needreset = false;
+
+- for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+- if (ATH_TXQ_SETUP(sc, i)) {
+- txq = &sc->tx.txq[i];
+- ath_txq_lock(sc, txq);
+- if (txq->axq_depth) {
+- if (txq->axq_tx_inprogress) {
+- needreset = true;
+- ath_txq_unlock(sc, txq);
+- break;
+- } else {
+- txq->axq_tx_inprogress = true;
+- }
++ for (i = 0; i < IEEE80211_NUM_ACS; i++) {
++ txq = sc->tx.txq_map[i];
++
++ ath_txq_lock(sc, txq);
++ if (txq->axq_depth) {
++ if (txq->axq_tx_inprogress) {
++ needreset = true;
++ ath_txq_unlock(sc, txq);
++ break;
++ } else {
++ txq->axq_tx_inprogress = true;
+ }
+- ath_txq_unlock_complete(sc, txq);
+ }
++ ath_txq_unlock_complete(sc, txq);
++ }
+
+ if (needreset) {
+ ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -766,6 +766,7 @@ int __must_check __sta_info_destroy(stru
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ int ret, i;
++ bool have_key = false;
+
+ might_sleep();
+
+@@ -793,12 +794,19 @@ int __must_check __sta_info_destroy(stru
+ list_del_rcu(&sta->list);
+
+ mutex_lock(&local->key_mtx);
+- for (i = 0; i < NUM_DEFAULT_KEYS; i++)
++ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ __ieee80211_key_free(key_mtx_dereference(local, sta->gtk[i]));
+- if (sta->ptk)
++ have_key = true;
++ }
++ if (sta->ptk) {
+ __ieee80211_key_free(key_mtx_dereference(local, sta->ptk));
++ have_key = true;
++ }
+ mutex_unlock(&local->key_mtx);
+
++ if (!have_key)
++ synchronize_net();
++
+ sta->dead = true;
+
+ local->num_sta--;