Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking update from David Miller:

 1) Checkpoint/restarted TCP sockets now can properly propagate the TCP
    timestamp offset.  From Andrey Vagin.

 2) VMWARE VM VSOCK layer, from Andy King.

 3) Much improved support for virtual functions and SR-IOV in bnx2x,
    from Ariel ELior.

 4) All protocols on ipv4 and ipv6 are now network namespace aware, and
    all the compatability checks for initial-namespace-only protocols is
    removed.  Thanks to Tom Parkin for helping deal with the last major
    holdout, L2TP.

 5) IPV6 support in netpoll and network namespace support in pktgen,
    from Cong Wang.

 6) Multiple Registration Protocol (MRP) and Multiple VLAN Registration
    Protocol (MVRP) support, from David Ward.

 7) Compute packet lengths more accurately in the packet scheduler, from
    Eric Dumazet.

 8) Use per-task page fragment allocator in skb_append_datato_frags(),
    also from Eric Dumazet.

 9) Add support for connection tracking labels in netfilter, from
    Florian Westphal.

10) Fix default multicast group joining on ipv6, and add anti-spoofing
    checks to 6to4 and 6rd.  From Hannes Frederic Sowa.

11) Make ipv4/ipv6 fragmentation memory limits more reasonable in modern
    times, rearrange inet frag datastructures for better cacheline
    locality, and move more operations outside of locking.  From Jesper
    Dangaard Brouer.

12) Instead of strict master <--> slave relationships, allow arbitrary
    scenerios with "upper device lists".  From Jiri Pirko.

13) Improve rate limiting accuracy in TBF and act_police, also from Jiri
    Pirko.

14) Add a BPF filter netfilter match target, from Willem de Bruijn.

15) Orphan and delete a bunch of pre-historic networking drivers from
    Paul Gortmaker.

16) Add TSO support for GRE tunnels, from Pravin B SHelar.  Although
    this still needs some minor bug fixing before it's %100 correct in
    all cases.

17) Handle unresolved IPSEC states like ARP, with a resolution packet
    queue.  From Steffen Klassert.

18) Remove TCP Appropriate Byte Count support (ABC), from Stephen
    Hemminger.  This was long overdue.

19) Support SO_REUSEPORT, from Tom Herbert.

20) Allow locking a socket BPF filter, so that it cannot change after a
    process drops capabilities.

21) Add VLAN filtering to bridge, from Vlad Yasevich.

22) Bring ipv6 on-par with ipv4 and do not cache neighbour entries in
    the ipv6 routes, from YOSHIFUJI Hideaki.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1538 commits)
  ipv6: fix race condition regarding dst->expires and dst->from.
  net: fix a wrong assignment in skb_split()
  ip_gre: remove an extra dst_release()
  ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
  atl1c: restore buffer state
  net: fix a build failure when !CONFIG_PROC_FS
  net: ipv4: fix waring -Wunused-variable
  net: proc: fix build failed when procfs is not configured
  Revert "xen: netback: remove redundant xenvif_put"
  net: move procfs code to net/core/net-procfs.c
  qmi_wwan, cdc-ether: add ADU960S
  bonding: set sysfs device_type to 'bond'
  bonding: fix bond_release_all inconsistencies
  b44: use netdev_alloc_skb_ip_align()
  xen: netback: remove redundant xenvif_put
  net: fec: Do a sanity check on the gpio number
  ip_gre: propogate target device GSO capability to the tunnel device
  ip_gre: allow CSUM capable devices to handle packets
  bonding: Fix initialize after use for 3ad machine state spinlock
  bonding: Fix race condition between bond_enslave() and bond_3ad_update_lacp_rate()
  ...

1 files changed, 715 insertions, 472 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5107248af7f..9f6464f3e05 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -30,11 +30,13 @@
 #include "rate.h"
 #include "led.h"
 
-#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
-#define IEEE80211_AUTH_MAX_TRIES 3
-#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
-#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
-#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_AUTH_TIMEOUT		(HZ / 5)
+#define IEEE80211_AUTH_TIMEOUT_SHORT	(HZ / 10)
+#define IEEE80211_AUTH_MAX_TRIES	3
+#define IEEE80211_AUTH_WAIT_ASSOC	(HZ * 5)
+#define IEEE80211_ASSOC_TIMEOUT		(HZ / 5)
+#define IEEE80211_ASSOC_TIMEOUT_SHORT	(HZ / 10)
+#define IEEE80211_ASSOC_MAX_TRIES	3
 
 static int max_nullfunc_tries = 2;
 module_param(max_nullfunc_tries, int, 0644);
@@ -112,6 +114,9 @@ enum rx_mgmt_action {
 
 	/* caller must call cfg80211_send_assoc_timeout() */
 	RX_MGMT_CFG80211_ASSOC_TIMEOUT,
+
+	/* used when a processed beacon causes a deauth */
+	RX_MGMT_CFG80211_TX_DEAUTH,
 };
 
 /* utils */
@@ -172,79 +177,331 @@ static int ecw2cw(int ecw)
 	return (1 << ecw) - 1;
 }
 
-static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
-				  struct ieee80211_ht_operation *ht_oper,
-				  const u8 *bssid, bool reconfig)
+static u32 chandef_downgrade(struct cfg80211_chan_def *c)
+{
+	u32 ret;
+	int tmp;
+
+	switch (c->width) {
+	case NL80211_CHAN_WIDTH_20:
+		c->width = NL80211_CHAN_WIDTH_20_NOHT;
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		c->width = NL80211_CHAN_WIDTH_20;
+		c->center_freq1 = c->chan->center_freq;
+		ret = IEEE80211_STA_DISABLE_40MHZ |
+		      IEEE80211_STA_DISABLE_VHT;
+		break;
+	case NL80211_CHAN_WIDTH_80:
+		tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
+		/* n_P40 */
+		tmp /= 2;
+		/* freq_P40 */
+		c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
+		c->width = NL80211_CHAN_WIDTH_40;
+		ret = IEEE80211_STA_DISABLE_VHT;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+		c->center_freq2 = 0;
+		c->width = NL80211_CHAN_WIDTH_80;
+		ret = IEEE80211_STA_DISABLE_80P80MHZ |
+		      IEEE80211_STA_DISABLE_160MHZ;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		/* n_P20 */
+		tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
+		/* n_P80 */
+		tmp /= 4;
+		c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
+		c->width = NL80211_CHAN_WIDTH_80;
+		ret = IEEE80211_STA_DISABLE_80P80MHZ |
+		      IEEE80211_STA_DISABLE_160MHZ;
+		break;
+	default:
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		WARN_ON_ONCE(1);
+		c->width = NL80211_CHAN_WIDTH_20_NOHT;
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+		break;
+	}
+
+	WARN_ON_ONCE(!cfg80211_chandef_valid(c));
+
+	return ret;
+}
+
+static u32
+ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
+			     struct ieee80211_supported_band *sband,
+			     struct ieee80211_channel *channel,
+			     const struct ieee80211_ht_operation *ht_oper,
+			     const struct ieee80211_vht_operation *vht_oper,
+			     struct cfg80211_chan_def *chandef, bool verbose)
+{
+	struct cfg80211_chan_def vht_chandef;
+	u32 ht_cfreq, ret;
+
+	chandef->chan = channel;
+	chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+	chandef->center_freq1 = channel->center_freq;
+	chandef->center_freq2 = 0;
+
+	if (!ht_oper || !sband->ht_cap.ht_supported) {
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	chandef->width = NL80211_CHAN_WIDTH_20;
+
+	ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
+						  channel->band);
+	/* check that channel matches the right operating channel */
+	if (channel->center_freq != ht_cfreq) {
+		/*
+		 * It's possible that some APs are confused here;
+		 * Netgear WNDR3700 sometimes reports 4 higher than
+		 * the actual channel in association responses, but
+		 * since we look at probe response/beacon data here
+		 * it should be OK.
+		 */
+		if (verbose)
+			sdata_info(sdata,
+				   "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
+				   channel->center_freq, ht_cfreq,
+				   ht_oper->primary_chan, channel->band);
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	/* check 40 MHz support, if we have it */
+	if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
+		switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+		case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+			chandef->width = NL80211_CHAN_WIDTH_40;
+			chandef->center_freq1 += 10;
+			break;
+		case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+			chandef->width = NL80211_CHAN_WIDTH_40;
+			chandef->center_freq1 -= 10;
+			break;
+		}
+	} else {
+		/* 40 MHz (and 80 MHz) must be supported for VHT */
+		ret = IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	if (!vht_oper || !sband->vht_cap.vht_supported) {
+		ret = IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	vht_chandef.chan = channel;
+	vht_chandef.center_freq1 =
+		ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
+					       channel->band);
+	vht_chandef.center_freq2 = 0;
+
+	if (vht_oper->center_freq_seg2_idx)
+		vht_chandef.center_freq2 =
+			ieee80211_channel_to_frequency(
+				vht_oper->center_freq_seg2_idx,
+				channel->band);
+
+	switch (vht_oper->chan_width) {
+	case IEEE80211_VHT_CHANWIDTH_USE_HT:
+		vht_chandef.width = chandef->width;
+		break;
+	case IEEE80211_VHT_CHANWIDTH_80MHZ:
+		vht_chandef.width = NL80211_CHAN_WIDTH_80;
+		break;
+	case IEEE80211_VHT_CHANWIDTH_160MHZ:
+		vht_chandef.width = NL80211_CHAN_WIDTH_160;
+		break;
+	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
+		vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
+		break;
+	default:
+		if (verbose)
+			sdata_info(sdata,
+				   "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
+				   vht_oper->chan_width);
+		ret = IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	if (!cfg80211_chandef_valid(&vht_chandef)) {
+		if (verbose)
+			sdata_info(sdata,
+				   "AP VHT information is invalid, disable VHT\n");
+		ret = IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
+		ret = 0;
+		goto out;
+	}
+
+	if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
+		if (verbose)
+			sdata_info(sdata,
+				   "AP VHT information doesn't match HT, disable VHT\n");
+		ret = IEEE80211_STA_DISABLE_VHT;
+		goto out;
+	}
+
+	*chandef = vht_chandef;
+
+	ret = 0;
+
+out:
+	/* don't print the message below for VHT mismatch if VHT is disabled */
+	if (ret & IEEE80211_STA_DISABLE_VHT)
+		vht_chandef = *chandef;
+
+	while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
+					IEEE80211_CHAN_DISABLED)) {
+		if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
+			ret = IEEE80211_STA_DISABLE_HT |
+			      IEEE80211_STA_DISABLE_VHT;
+			goto out;
+		}
+
+		ret |= chandef_downgrade(chandef);
+	}
+
+	if (chandef->width != vht_chandef.width && verbose)
+		sdata_info(sdata,
+			   "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
+
+	WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
+	return ret;
+}
+
+static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
+			       struct sta_info *sta,
+			       const struct ieee80211_ht_operation *ht_oper,
+			       const struct ieee80211_vht_operation *vht_oper,
+			       const u8 *bssid, u32 *changed)
 {
 	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_supported_band *sband;
-	struct ieee80211_chanctx_conf *chanctx_conf;
 	struct ieee80211_channel *chan;
-	struct sta_info *sta;
-	u32 changed = 0;
+	struct cfg80211_chan_def chandef;
 	u16 ht_opmode;
-	bool disable_40 = false;
+	u32 flags;
+	enum ieee80211_sta_rx_bandwidth new_sta_bw;
+	int ret;
 
-	rcu_read_lock();
-	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
-	if (WARN_ON(!chanctx_conf)) {
-		rcu_read_unlock();
+	/* if HT was/is disabled, don't track any bandwidth changes */
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
 		return 0;
-	}
-	chan = chanctx_conf->def.chan;
-	rcu_read_unlock();
+
+	/* don't check VHT if we associated as non-VHT station */
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
+		vht_oper = NULL;
+
+	if (WARN_ON_ONCE(!sta))
+		return -EINVAL;
+
+	chan = sdata->vif.bss_conf.chandef.chan;
 	sband = local->hw.wiphy->bands[chan->band];
 
-	switch (sdata->vif.bss_conf.chandef.width) {
+	/* calculate new channel (type) based on HT/VHT operation IEs */
+	flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
+					     vht_oper, &chandef, false);
+
+	/*
+	 * Downgrade the new channel if we associated with restricted
+	 * capabilities. For example, if we associated as a 20 MHz STA
+	 * to a 40 MHz AP (due to regulatory, capabilities or config
+	 * reasons) then switching to a 40 MHz channel now won't do us
+	 * any good -- we couldn't use it with the AP.
+	 */
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
+	    chandef.width == NL80211_CHAN_WIDTH_80P80)
+		flags |= chandef_downgrade(&chandef);
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
+	    chandef.width == NL80211_CHAN_WIDTH_160)
+		flags |= chandef_downgrade(&chandef);
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
+	    chandef.width > NL80211_CHAN_WIDTH_20)
+		flags |= chandef_downgrade(&chandef);
+
+	if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
+		return 0;
+
+	sdata_info(sdata,
+		   "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
+		   ifmgd->bssid, chandef.chan->center_freq, chandef.width,
+		   chandef.center_freq1, chandef.center_freq2);
+
+	if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
+				      IEEE80211_STA_DISABLE_VHT |
+				      IEEE80211_STA_DISABLE_40MHZ |
+				      IEEE80211_STA_DISABLE_80P80MHZ |
+				      IEEE80211_STA_DISABLE_160MHZ)) ||
+	    !cfg80211_chandef_valid(&chandef)) {
+		sdata_info(sdata,
+			   "AP %pM changed bandwidth in a way we can't support - disconnect\n",
+			   ifmgd->bssid);
+		return -EINVAL;
+	}
+
+	switch (chandef.width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+	case NL80211_CHAN_WIDTH_20:
+		new_sta_bw = IEEE80211_STA_RX_BW_20;
+		break;
 	case NL80211_CHAN_WIDTH_40:
-		if (sdata->vif.bss_conf.chandef.chan->center_freq >
-				sdata->vif.bss_conf.chandef.center_freq1 &&
-		    chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
-			disable_40 = true;
-		if (sdata->vif.bss_conf.chandef.chan->center_freq <
-				sdata->vif.bss_conf.chandef.center_freq1 &&
-		    chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
-			disable_40 = true;
+		new_sta_bw = IEEE80211_STA_RX_BW_40;
 		break;
-	default:
+	case NL80211_CHAN_WIDTH_80:
+		new_sta_bw = IEEE80211_STA_RX_BW_80;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+	case NL80211_CHAN_WIDTH_160:
+		new_sta_bw = IEEE80211_STA_RX_BW_160;
 		break;
+	default:
+		return -EINVAL;
 	}
 
-	/* This can change during the lifetime of the BSS */
-	if (!(ht_oper->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
-		disable_40 = true;
-
-	mutex_lock(&local->sta_mtx);
-	sta = sta_info_get(sdata, bssid);
+	if (new_sta_bw > sta->cur_max_bandwidth)
+		new_sta_bw = sta->cur_max_bandwidth;
 
-	WARN_ON_ONCE(!sta);
-
-	if (sta && !sta->supports_40mhz)
-		disable_40 = true;
-
-	if (sta && (!reconfig ||
-		    (disable_40 != !(sta->sta.ht_cap.cap &
-					IEEE80211_HT_CAP_SUP_WIDTH_20_40)))) {
+	if (new_sta_bw < sta->sta.bandwidth) {
+		sta->sta.bandwidth = new_sta_bw;
+		rate_control_rate_update(local, sband, sta,
+					 IEEE80211_RC_BW_CHANGED);
+	}
 
-		if (disable_40)
-			sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
-		else
-			sta->sta.ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+	ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
+	if (ret) {
+		sdata_info(sdata,
+			   "AP %pM changed bandwidth to incompatible one - disconnect\n",
+			   ifmgd->bssid);
+		return ret;
+	}
 
+	if (new_sta_bw > sta->sta.bandwidth) {
+		sta->sta.bandwidth = new_sta_bw;
 		rate_control_rate_update(local, sband, sta,
 					 IEEE80211_RC_BW_CHANGED);
 	}
-	mutex_unlock(&local->sta_mtx);
 
 	ht_opmode = le16_to_cpu(ht_oper->operation_mode);
 
 	/* if bss configuration changed store the new one */
-	if (!reconfig || (sdata->vif.bss_conf.ht_operation_mode != ht_opmode)) {
-		changed |= BSS_CHANGED_HT;
+	if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
+		*changed |= BSS_CHANGED_HT;
 		sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
 	}
 
-	return changed;
+	return 0;
 }
 
 /* frame sending functions */
@@ -341,11 +598,13 @@ static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
 
 static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
 				 struct sk_buff *skb,
-				 struct ieee80211_supported_band *sband)
+				 struct ieee80211_supported_band *sband,
+				 struct ieee80211_vht_cap *ap_vht_cap)
 {
 	u8 *pos;
 	u32 cap;
 	struct ieee80211_sta_vht_cap vht_cap;
+	int i;
 
 	BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
 
@@ -364,6 +623,42 @@ static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
 		cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
 	}
 
+	/*
+	 * Some APs apparently get confused if our capabilities are better
+	 * than theirs, so restrict what we advertise in the assoc request.
+	 */
+	if (!(ap_vht_cap->vht_cap_info &
+			cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
+		cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
+
+	if (!(ap_vht_cap->vht_cap_info &
+			cpu_to_le32(IEEE80211_VHT_CAP_TXSTBC)))
+		cap &= ~(IEEE80211_VHT_CAP_RXSTBC_1 |
+			 IEEE80211_VHT_CAP_RXSTBC_3 |
+			 IEEE80211_VHT_CAP_RXSTBC_4);
+
+	for (i = 0; i < 8; i++) {
+		int shift = i * 2;
+		u16 mask = IEEE80211_VHT_MCS_NOT_SUPPORTED << shift;
+		u16 ap_mcs, our_mcs;
+
+		ap_mcs = (le16_to_cpu(ap_vht_cap->supp_mcs.tx_mcs_map) &
+								mask) >> shift;
+		our_mcs = (le16_to_cpu(vht_cap.vht_mcs.rx_mcs_map) &
+								mask) >> shift;
+
+		switch (ap_mcs) {
+		default:
+			if (our_mcs <= ap_mcs)
+				break;
+			/* fall through */
+		case IEEE80211_VHT_MCS_NOT_SUPPORTED:
+			vht_cap.vht_mcs.rx_mcs_map &= cpu_to_le16(~mask);
+			vht_cap.vht_mcs.rx_mcs_map |=
+				cpu_to_le16(ap_mcs << shift);
+		}
+	}
+
 	/* reserve and fill IE */
 	pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
 	ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
@@ -562,7 +857,8 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 				    sband, chan, sdata->smps_mode);
 
 	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
-		ieee80211_add_vht_ie(sdata, skb, sband);
+		ieee80211_add_vht_ie(sdata, skb, sband,
+				     &assoc_data->ap_vht_cap);
 
 	/* if present, add any custom non-vendor IEs that go after HT */
 	if (assoc_data->ie_len && assoc_data->ie) {
@@ -605,6 +901,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	drv_mgd_prepare_tx(local, sdata);
 
 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
+						IEEE80211_TX_INTFL_MLME_CONN_TX;
 	ieee80211_tx_skb(sdata, skb);
 }
 
@@ -641,7 +940,8 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
 	if (powersave)
 		nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 
-	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
 	if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
 			    IEEE80211_STA_CONNECTION_POLL))
 		IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
@@ -745,10 +1045,10 @@ static void ieee80211_chswitch_timer(unsigned long data)
 	ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
 }
 
-void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
-				      struct ieee80211_channel_sw_ie *sw_elem,
-				      struct ieee80211_bss *bss,
-				      u64 timestamp)
+void
+ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
+				 const struct ieee80211_channel_sw_ie *sw_elem,
+				 struct ieee80211_bss *bss, u64 timestamp)
 {
 	struct cfg80211_bss *cbss =
 		container_of((void *)bss, struct cfg80211_bss, priv);
@@ -907,39 +1207,6 @@ static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
 	return 0;
 }
 
-void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif)
-{
-	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_conf *conf = &local->hw.conf;
-
-	WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
-		!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
-		(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
-
-	local->disable_dynamic_ps = false;
-	conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout;
-}
-EXPORT_SYMBOL(ieee80211_enable_dyn_ps);
-
-void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif)
-{
-	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_conf *conf = &local->hw.conf;
-
-	WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
-		!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
-		(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
-
-	local->disable_dynamic_ps = true;
-	conf->dynamic_ps_timeout = 0;
-	del_timer_sync(&local->dynamic_ps_timer);
-	ieee80211_queue_work(&local->hw,
-			     &local->dynamic_ps_enable_work);
-}
-EXPORT_SYMBOL(ieee80211_disable_dyn_ps);
-
 /* powersave */
 static void ieee80211_enable_ps(struct ieee80211_local *local,
 				struct ieee80211_sub_if_data *sdata)
@@ -1042,7 +1309,6 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
 	}
 
 	if (count == 1 && ieee80211_powersave_allowed(found)) {
-		struct ieee80211_conf *conf = &local->hw.conf;
 		s32 beaconint_us;
 
 		if (latency < 0)
@@ -1066,10 +1332,7 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
 			else
 				timeout = 100;
 		}
-		local->dynamic_ps_user_timeout = timeout;
-		if (!local->disable_dynamic_ps)
-			conf->dynamic_ps_timeout =
-				local->dynamic_ps_user_timeout;
+		local->hw.conf.dynamic_ps_timeout = timeout;
 
 		if (beaconint_us > latency) {
 			local->ps_sdata = NULL;
@@ -1139,8 +1402,7 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 	if (local->hw.conf.flags & IEEE80211_CONF_PS)
 		return;
 
-	if (!local->disable_dynamic_ps &&
-	    local->hw.conf.dynamic_ps_timeout > 0) {
+	if (local->hw.conf.dynamic_ps_timeout > 0) {
 		/* don't enter PS if TX frames are pending */
 		if (drv_tx_frames_pending(local)) {
 			mod_timer(&local->dynamic_ps_timer, jiffies +
@@ -1205,16 +1467,30 @@ void ieee80211_dynamic_ps_timer(unsigned long data)
 	ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
 }
 
+void ieee80211_dfs_cac_timer_work(struct work_struct *work)
+{
+	struct delayed_work *delayed_work =
+		container_of(work, struct delayed_work, work);
+	struct ieee80211_sub_if_data *sdata =
+		container_of(delayed_work, struct ieee80211_sub_if_data,
+			     dfs_cac_timer_work);
+
+	ieee80211_vif_release_channel(sdata);
+
+	cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
+}
+
 /* MLME */
 static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
 				     struct ieee80211_sub_if_data *sdata,
-				     u8 *wmm_param, size_t wmm_param_len)
+				     const u8 *wmm_param, size_t wmm_param_len)
 {
 	struct ieee80211_tx_queue_params params;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	size_t left;
 	int count;
-	u8 *pos, uapsd_queues = 0;
+	const u8 *pos;
+	u8 uapsd_queues = 0;
 
 	if (!local->ops->conf_tx)
 		return false;
@@ -1406,7 +1682,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_led_assoc(local, 1);
 
-	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
+	if (sdata->u.mgd.assoc_data->have_beacon) {
 		/*
 		 * If the AP is buggy we may get here with no DTIM period
 		 * known, so assume it's 1 which is the only safe assumption
@@ -1414,6 +1690,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 		 * probably just won't work at all.
 		 */
 		bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
+		bss_info_changed |= BSS_CHANGED_DTIM_PERIOD;
 	} else {
 		bss_conf->dtim_period = 0;
 	}
@@ -1426,10 +1703,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 		bss_info_changed |= BSS_CHANGED_CQM;
 
 	/* Enable ARP filtering */
-	if (bss_conf->arp_filter_enabled != sdata->arp_filter_state) {
-		bss_conf->arp_filter_enabled = sdata->arp_filter_state;
+	if (bss_conf->arp_addr_cnt)
 		bss_info_changed |= BSS_CHANGED_ARP_FILTER;
-	}
 
 	ieee80211_bss_info_change_notify(sdata, bss_info_changed);
 
@@ -1450,7 +1725,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_local *local = sdata->local;
-	struct sta_info *sta;
 	u32 changed = 0;
 
 	ASSERT_MGD_MTX(ifmgd);
@@ -1482,14 +1756,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	netif_tx_stop_all_queues(sdata->dev);
 	netif_carrier_off(sdata->dev);
 
-	mutex_lock(&local->sta_mtx);
-	sta = sta_info_get(sdata, ifmgd->bssid);
-	if (sta) {
-		set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-		ieee80211_sta_tear_down_BA_sessions(sta, false);
-	}
-	mutex_unlock(&local->sta_mtx);
-
 	/*
 	 * if we want to get out of ps before disassoc (why?) we have
 	 * to do it before sending disassoc, as otherwise the null-packet
@@ -1521,7 +1787,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	memset(ifmgd->bssid, 0, ETH_ALEN);
 
 	/* remove AP and TDLS peers */
-	sta_info_flush(local, sdata);
+	sta_info_flush_defer(sdata);
 
 	/* finally reset all BSS / config parameters */
 	changed |= ieee80211_reset_erp_info(sdata);
@@ -1543,10 +1809,8 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	cancel_work_sync(&local->dynamic_ps_enable_work);
 
 	/* Disable ARP filtering */
-	if (sdata->vif.bss_conf.arp_filter_enabled) {
-		sdata->vif.bss_conf.arp_filter_enabled = false;
+	if (sdata->vif.bss_conf.arp_addr_cnt)
 		changed |= BSS_CHANGED_ARP_FILTER;
-	}
 
 	sdata->vif.bss_conf.qos = false;
 	changed |= BSS_CHANGED_QOS;
@@ -1629,17 +1893,18 @@ void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
 	if (!ieee80211_is_data(hdr->frame_control))
 	    return;
 
-	if (ack)
-		ieee80211_sta_reset_conn_monitor(sdata);
-
 	if (ieee80211_is_nullfunc(hdr->frame_control) &&
 	    sdata->u.mgd.probe_send_count > 0) {
 		if (ack)
-			sdata->u.mgd.probe_send_count = 0;
+			ieee80211_sta_reset_conn_monitor(sdata);
 		else
 			sdata->u.mgd.nullfunc_failed = true;
 		ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+		return;
 	}
+
+	if (ack)
+		ieee80211_sta_reset_conn_monitor(sdata);
 }
 
 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
@@ -1680,7 +1945,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
 			ssid_len = ssid[1];
 
 		ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
-					 0, (u32) -1, true, false,
+					 0, (u32) -1, true, 0,
 					 ifmgd->associated->channel, false);
 		rcu_read_unlock();
 	}
@@ -1714,7 +1979,7 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
 
 	if (beacon)
 		mlme_dbg_ratelimited(sdata,
-				     "detected beacon loss from AP - sending probe request\n");
+				     "detected beacon loss from AP - probing\n");
 
 	ieee80211_cqm_rssi_notify(&sdata->vif,
 		NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL);
@@ -1795,11 +2060,9 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL(ieee80211_ap_probereq_get);
 
-static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata,
-				   bool transmit_frame)
+static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
-	struct ieee80211_local *local = sdata->local;
 	u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
 	mutex_lock(&ifmgd->mtx);
@@ -1810,8 +2073,10 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
 			       WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
-			       transmit_frame, frame_buf);
+			       true, frame_buf);
 	ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
+	ieee80211_wake_queues_by_reason(&sdata->local->hw,
+					IEEE80211_QUEUE_STOP_REASON_CSA);
 	mutex_unlock(&ifmgd->mtx);
 
 	/*
@@ -1819,10 +2084,6 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata,
 	 * but that's not a problem.
 	 */
 	cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
-
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
-	mutex_unlock(&local->mtx);
 }
 
 static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
@@ -1841,10 +2102,10 @@ static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
 		rcu_read_unlock();
 	}
 
-	if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) {
+	if (ifmgd->connection_loss) {
 		sdata_info(sdata, "Connection to AP %pM lost\n",
 			   ifmgd->bssid);
-		__ieee80211_disconnect(sdata, false);
+		__ieee80211_disconnect(sdata);
 	} else {
 		ieee80211_mgd_probe_ap(sdata, true);
 	}
@@ -1856,9 +2117,7 @@ static void ieee80211_csa_connection_drop_work(struct work_struct *work)
 		container_of(work, struct ieee80211_sub_if_data,
 			     u.mgd.csa_connection_drop_work);
 
-	ieee80211_wake_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
-	__ieee80211_disconnect(sdata, true);
+	__ieee80211_disconnect(sdata);
 }
 
 void ieee80211_beacon_loss(struct ieee80211_vif *vif)
@@ -1869,6 +2128,7 @@ void ieee80211_beacon_loss(struct ieee80211_vif *vif)
 	trace_api_beacon_loss(sdata);
 
 	WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR);
+	sdata->u.mgd.connection_loss = false;
 	ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
 }
 EXPORT_SYMBOL(ieee80211_beacon_loss);
@@ -1880,7 +2140,7 @@ void ieee80211_connection_loss(struct ieee80211_vif *vif)
 
 	trace_api_connection_loss(sdata);
 
-	WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR));
+	sdata->u.mgd.connection_loss = true;
 	ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
 }
 EXPORT_SYMBOL(ieee80211_connection_loss);
@@ -1902,7 +2162,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
 		ieee80211_vif_release_channel(sdata);
 	}
 
-	cfg80211_put_bss(auth_data->bss);
+	cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
 	kfree(auth_data);
 	sdata->u.mgd.auth_data = NULL;
 }
@@ -1910,9 +2170,11 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
 static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_mgmt *mgmt, size_t len)
 {
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
 	u8 *pos;
 	struct ieee802_11_elems elems;
+	u32 tx_flags = 0;
 
 	pos = mgmt->u.auth.variable;
 	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
@@ -1920,11 +2182,14 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 		return;
 	auth_data->expected_transaction = 4;
 	drv_mgd_prepare_tx(sdata->local, sdata);
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+			   IEEE80211_TX_INTFL_MLME_CONN_TX;
 	ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
 			    elems.challenge - 2, elems.challenge_len + 2,
 			    auth_data->bss->bssid, auth_data->bss->bssid,
 			    auth_data->key, auth_data->key_len,
-			    auth_data->key_idx);
+			    auth_data->key_idx, tx_flags);
 }
 
 static enum rx_mgmt_action __must_check
@@ -1991,6 +2256,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
 	sdata_info(sdata, "authenticated\n");
 	ifmgd->auth_data->done = true;
 	ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
+	ifmgd->auth_data->timeout_started = true;
 	run_again(ifmgd, ifmgd->auth_data->timeout);
 
 	if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
@@ -2049,10 +2315,6 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
 
-	mutex_lock(&sdata->local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&sdata->local->mtx);
-
 	return RX_MGMT_CFG80211_DEAUTH;
 }
 
@@ -2080,10 +2342,6 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
 
-	mutex_lock(&sdata->local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&sdata->local->mtx);
-
 	return RX_MGMT_CFG80211_DISASSOC;
 }
 
@@ -2193,6 +2451,24 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 
 	ifmgd->aid = aid;
 
+	/*
+	 * We previously checked these in the beacon/probe response, so
+	 * they should be present here. This is just a safety net.
+	 */
+	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
+	    (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
+		sdata_info(sdata,
+			   "HT AP is missing WMM params or HT capability/operation in AssocResp\n");
+		return false;
+	}
+
+	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
+	    (!elems.vht_cap_elem || !elems.vht_operation)) {
+		sdata_info(sdata,
+			   "VHT AP is missing VHT capability/operation in AssocResp\n");
+		return false;
+	}
+
 	mutex_lock(&sdata->local->sta_mtx);
 	/*
 	 * station info was already allocated and inserted before
@@ -2206,17 +2482,36 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 
 	sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
 
+	/* Set up internal HT/VHT capabilities */
 	if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
 		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
-				elems.ht_cap_elem, &sta->sta.ht_cap);
-
-	sta->supports_40mhz =
-		sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+						  elems.ht_cap_elem, sta);
 
 	if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
 		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
-						    elems.vht_cap_elem,
-						    &sta->sta.vht_cap);
+						    elems.vht_cap_elem, sta);
+
+	/*
+	 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
+	 * in their association response, so ignore that data for our own
+	 * configuration. If it changed since the last beacon, we'll get the
+	 * next beacon and update then.
+	 */
+
+	/*
+	 * If an operating mode notification IE is present, override the
+	 * NSS calculation (that would be done in rate_control_rate_init())
+	 * and use the # of streams from that element.
+	 */
+	if (elems.opmode_notif &&
+	    !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
+		u8 nss;
+
+		nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
+		nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
+		nss += 1;
+		sta->sta.rx_nss = nss;
+	}
 
 	rate_control_rate_init(sta);
 
@@ -2226,9 +2521,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	if (elems.wmm_param)
 		set_sta_flag(sta, WLAN_STA_WME);
 
-	err = sta_info_move_state(sta, IEEE80211_STA_AUTH);
-	if (!err)
-		err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
+	err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 	if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
 		err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 	if (err) {
@@ -2257,11 +2550,6 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 		ieee80211_set_wmm_default(sdata, false);
 	changed |= BSS_CHANGED_QOS;
 
-	if (elems.ht_operation && elems.wmm_param &&
-	    !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
-		changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
-						  cbss->bssid, false);
-
 	/* set AID and assoc capability,
 	 * ieee80211_set_associated() will tell the driver */
 	bss_conf->aid = aid;
@@ -2335,6 +2623,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 			   "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
 			   mgmt->sa, tu, ms);
 		assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
+		assoc_data->timeout_started = true;
 		if (ms > IEEE80211_ASSOC_TIMEOUT)
 			run_again(ifmgd, assoc_data->timeout);
 		return RX_MGMT_NONE;
@@ -2350,7 +2639,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 		if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) {
 			/* oops -- internal error -- send timeout for now */
 			ieee80211_destroy_assoc_data(sdata, false);
-			cfg80211_put_bss(*bss);
+			cfg80211_put_bss(sdata->local->hw.wiphy, *bss);
 			return RX_MGMT_CFG80211_ASSOC_TIMEOUT;
 		}
 		sdata_info(sdata, "associated\n");
@@ -2369,8 +2658,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 				  struct ieee80211_mgmt *mgmt, size_t len,
 				  struct ieee80211_rx_status *rx_status,
-				  struct ieee802_11_elems *elems,
-				  bool beacon)
+				  struct ieee802_11_elems *elems)
 {
 	struct ieee80211_local *local = sdata->local;
 	int freq;
@@ -2387,7 +2675,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period;
 
 		if (elems->tim && !elems->parse_error) {
-			struct ieee80211_tim_ie *tim_ie = elems->tim;
+			const struct ieee80211_tim_ie *tim_ie = elems->tim;
 			sdata->u.mgd.dtim_period = tim_ie->dtim_period;
 		}
 	}
@@ -2404,7 +2692,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		return;
 
 	bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
-					channel, beacon);
+					channel);
 	if (bss)
 		ieee80211_rx_bss_put(local, bss);
 
@@ -2447,7 +2735,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
 	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
 				&elems);
 
-	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
+	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 
 	if (ifmgd->associated &&
 	    ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
@@ -2459,6 +2747,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
 		sdata_info(sdata, "direct probe responded\n");
 		ifmgd->auth_data->tries = 0;
 		ifmgd->auth_data->timeout = jiffies;
+		ifmgd->auth_data->timeout_started = true;
 		run_again(ifmgd, ifmgd->auth_data->timeout);
 	}
 }
@@ -2484,10 +2773,10 @@ static const u64 care_about_ies =
 	(1ULL << WLAN_EID_HT_CAPABILITY) |
 	(1ULL << WLAN_EID_HT_OPERATION);
 
-static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
-				     struct ieee80211_mgmt *mgmt,
-				     size_t len,
-				     struct ieee80211_rx_status *rx_status)
+static enum rx_mgmt_action
+ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
+			 struct ieee80211_mgmt *mgmt, size_t len,
+			 u8 *deauth_buf, struct ieee80211_rx_status *rx_status)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
@@ -2496,6 +2785,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_chanctx_conf *chanctx_conf;
 	struct ieee80211_channel *chan;
+	struct sta_info *sta;
 	u32 changed = 0;
 	bool erp_valid;
 	u8 erp_value = 0;
@@ -2507,40 +2797,51 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	/* Process beacon from the current BSS */
 	baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
 	if (baselen > len)
-		return;
+		return RX_MGMT_NONE;
 
 	rcu_read_lock();
 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 	if (!chanctx_conf) {
 		rcu_read_unlock();
-		return;
+		return RX_MGMT_NONE;
 	}
 
 	if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
 		rcu_read_unlock();
-		return;
+		return RX_MGMT_NONE;
 	}
 	chan = chanctx_conf->def.chan;
 	rcu_read_unlock();
 
-	if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
+	if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
 	    ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
 		ieee802_11_parse_elems(mgmt->u.beacon.variable,
 				       len - baselen, &elems);
 
-		ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
-				      false);
+		ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 		ifmgd->assoc_data->have_beacon = true;
-		ifmgd->assoc_data->sent_assoc = false;
+		ifmgd->assoc_data->need_beacon = false;
+		if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
+			sdata->vif.bss_conf.sync_tsf =
+				le64_to_cpu(mgmt->u.beacon.timestamp);
+			sdata->vif.bss_conf.sync_device_ts =
+				rx_status->device_timestamp;
+			if (elems.tim)
+				sdata->vif.bss_conf.sync_dtim_count =
+					elems.tim->dtim_count;
+			else
+				sdata->vif.bss_conf.sync_dtim_count = 0;
+		}
 		/* continue assoc process */
 		ifmgd->assoc_data->timeout = jiffies;
+		ifmgd->assoc_data->timeout_started = true;
 		run_again(ifmgd, ifmgd->assoc_data->timeout);
-		return;
+		return RX_MGMT_NONE;
 	}
 
 	if (!ifmgd->associated ||
 	    !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
-		return;
+		return RX_MGMT_NONE;
 	bssid = ifmgd->associated->bssid;
 
 	/* Track average RSSI from the Beacon frames of the current AP */
@@ -2571,12 +2872,12 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 		if (sig > ifmgd->rssi_max_thold &&
 		    (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
 			ifmgd->last_ave_beacon_signal = sig;
-			drv_rssi_callback(local, RSSI_EVENT_HIGH);
+			drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
 		} else if (sig < ifmgd->rssi_min_thold &&
 			   (last_sig >= ifmgd->rssi_max_thold ||
 			   last_sig == 0)) {
 			ifmgd->last_ave_beacon_signal = sig;
-			drv_rssi_callback(local, RSSI_EVENT_LOW);
+			drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
 		}
 	}
 
@@ -2606,7 +2907,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 
 	if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
 		mlme_dbg_ratelimited(sdata,
-				     "cancelling probereq poll due to a received beacon\n");
+				     "cancelling AP probe due to a received beacon\n");
 		mutex_lock(&local->mtx);
 		ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
 		ieee80211_run_deferred_scan(local);
@@ -2678,17 +2979,42 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
-		return;
+		return RX_MGMT_NONE;
 	ifmgd->beacon_crc = ncrc;
 	ifmgd->beacon_crc_valid = true;
 
-	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
-			      true);
+	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 
 	if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
 				     elems.wmm_param_len))
 		changed |= BSS_CHANGED_QOS;
 
+	/*
+	 * If we haven't had a beacon before, tell the driver about the
+	 * DTIM period (and beacon timing if desired) now.
+	 */
+	if (!bss_conf->dtim_period) {
+		/* a few bogus AP send dtim_period = 0 or no TIM IE */
+		if (elems.tim)
+			bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
+		else
+			bss_conf->dtim_period = 1;
+
+		if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
+			sdata->vif.bss_conf.sync_tsf =
+				le64_to_cpu(mgmt->u.beacon.timestamp);
+			sdata->vif.bss_conf.sync_device_ts =
+				rx_status->device_timestamp;
+			if (elems.tim)
+				sdata->vif.bss_conf.sync_dtim_count =
+					elems.tim->dtim_count;
+			else
+				sdata->vif.bss_conf.sync_dtim_count = 0;
+		}
+
+		changed |= BSS_CHANGED_DTIM_PERIOD;
+	}
+
 	if (elems.erp_info && elems.erp_info_len >= 1) {
 		erp_valid = true;
 		erp_value = elems.erp_info[0];
@@ -2699,11 +3025,22 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 			le16_to_cpu(mgmt->u.beacon.capab_info),
 			erp_valid, erp_value);
 
+	mutex_lock(&local->sta_mtx);
+	sta = sta_info_get(sdata, bssid);
 
-	if (elems.ht_cap_elem && elems.ht_operation && elems.wmm_param &&
-	    !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
-		changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
-						  bssid, true);
+	if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
+				elems.vht_operation, bssid, &changed)) {
+		mutex_unlock(&local->sta_mtx);
+		ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+				       WLAN_REASON_DEAUTH_LEAVING,
+				       true, deauth_buf);
+		return RX_MGMT_CFG80211_TX_DEAUTH;
+	}
+
+	if (sta && elems.opmode_notif)
+		ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
+					    rx_status->band, true);
+	mutex_unlock(&local->sta_mtx);
 
 	if (elems.country_elem && elems.pwr_constr_elem &&
 	    mgmt->u.probe_resp.capab_info &
@@ -2714,6 +3051,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 						       elems.pwr_constr_elem);
 
 	ieee80211_bss_info_change_notify(sdata, changed);
+
+	return RX_MGMT_NONE;
 }
 
 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
@@ -2724,6 +3063,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_mgmt *mgmt;
 	struct cfg80211_bss *bss = NULL;
 	enum rx_mgmt_action rma = RX_MGMT_NONE;
+	u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
 	u16 fc;
 
 	rx_status = (struct ieee80211_rx_status *) skb->cb;
@@ -2734,7 +3074,8 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 
 	switch (fc & IEEE80211_FCTL_STYPE) {
 	case IEEE80211_STYPE_BEACON:
-		ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
+		rma = ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len,
+					       deauth_buf, rx_status);
 		break;
 	case IEEE80211_STYPE_PROBE_RESP:
 		ieee80211_rx_mgmt_probe_resp(sdata, skb);
@@ -2783,6 +3124,10 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 	case RX_MGMT_CFG80211_ASSOC_TIMEOUT:
 		cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid);
 		break;
+	case RX_MGMT_CFG80211_TX_DEAUTH:
+		cfg80211_send_deauth(sdata->dev, deauth_buf,
+				     sizeof(deauth_buf));
+		break;
 	default:
 		WARN(1, "unexpected: %d", rma);
 	}
@@ -2804,14 +3149,13 @@ static void ieee80211_sta_timer(unsigned long data)
 }
 
 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
-					  u8 *bssid, u8 reason)
+					  u8 *bssid, u8 reason, bool tx)
 {
-	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
 	ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
-			       false, frame_buf);
+			       tx, frame_buf);
 	mutex_unlock(&ifmgd->mtx);
 
 	/*
@@ -2820,10 +3164,6 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
 	 */
 	cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
 
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
-	mutex_unlock(&local->mtx);
-
 	mutex_lock(&ifmgd->mtx);
 }
 
@@ -2832,12 +3172,17 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
+	u32 tx_flags = 0;
 
 	lockdep_assert_held(&ifmgd->mtx);
 
 	if (WARN_ON_ONCE(!auth_data))
 		return -EINVAL;
 
+	if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+		tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+			   IEEE80211_TX_INTFL_MLME_CONN_TX;
+
 	auth_data->tries++;
 
 	if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
@@ -2874,7 +3219,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
 				    auth_data->data, auth_data->data_len,
 				    auth_data->bss->bssid,
-				    auth_data->bss->bssid, NULL, 0, 0);
+				    auth_data->bss->bssid, NULL, 0, 0,
+				    tx_flags);
 	} else {
 		const u8 *ssidie;
 
@@ -2893,13 +3239,18 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 		 * will not answer to direct packet in unassociated state.
 		 */
 		ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
-					 NULL, 0, (u32) -1, true, false,
+					 NULL, 0, (u32) -1, true, tx_flags,
 					 auth_data->bss->channel, false);
 		rcu_read_unlock();
 	}
 
-	auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
-	run_again(ifmgd, auth_data->timeout);
+	if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+		auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
+		ifmgd->auth_data->timeout_started = true;
+		run_again(ifmgd, auth_data->timeout);
+	} else {
+		auth_data->timeout_started = false;
+	}
 
 	return 0;
 }
@@ -2930,12 +3281,29 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
 		   IEEE80211_ASSOC_MAX_TRIES);
 	ieee80211_send_assoc(sdata);
 
-	assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
-	run_again(&sdata->u.mgd, assoc_data->timeout);
+	if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
+		assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
+		assoc_data->timeout_started = true;
+		run_again(&sdata->u.mgd, assoc_data->timeout);
+	} else {
+		assoc_data->timeout_started = false;
+	}
 
 	return 0;
 }
 
+void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
+				  __le16 fc, bool acked)
+{
+	struct ieee80211_local *local = sdata->local;
+
+	sdata->u.mgd.status_fc = fc;
+	sdata->u.mgd.status_acked = acked;
+	sdata->u.mgd.status_received = true;
+
+	ieee80211_queue_work(&local->hw, &sdata->work);
+}
+
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_local *local = sdata->local;
@@ -2943,7 +3311,36 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 
 	mutex_lock(&ifmgd->mtx);
 
-	if (ifmgd->auth_data &&
+	if (ifmgd->status_received) {
+		__le16 fc = ifmgd->status_fc;
+		bool status_acked = ifmgd->status_acked;
+
+		ifmgd->status_received = false;
+		if (ifmgd->auth_data &&
+		    (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
+			if (status_acked) {
+				ifmgd->auth_data->timeout =
+					jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
+				run_again(ifmgd, ifmgd->auth_data->timeout);
+			} else {
+				ifmgd->auth_data->timeout = jiffies - 1;
+			}
+			ifmgd->auth_data->timeout_started = true;
+		} else if (ifmgd->assoc_data &&
+			   (ieee80211_is_assoc_req(fc) ||
+			    ieee80211_is_reassoc_req(fc))) {
+			if (status_acked) {
+				ifmgd->assoc_data->timeout =
+					jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
+				run_again(ifmgd, ifmgd->assoc_data->timeout);
+			} else {
+				ifmgd->assoc_data->timeout = jiffies - 1;
+			}
+			ifmgd->assoc_data->timeout_started = true;
+		}
+	}
+
+	if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
 	    time_after(jiffies, ifmgd->auth_data->timeout)) {
 		if (ifmgd->auth_data->done) {
 			/*
@@ -2962,12 +3359,13 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 			cfg80211_send_auth_timeout(sdata->dev, bssid);
 			mutex_lock(&ifmgd->mtx);
 		}
-	} else if (ifmgd->auth_data)
+	} else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
 		run_again(ifmgd, ifmgd->auth_data->timeout);
 
-	if (ifmgd->assoc_data &&
+	if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
 	    time_after(jiffies, ifmgd->assoc_data->timeout)) {
-		if (!ifmgd->assoc_data->have_beacon ||
+		if ((ifmgd->assoc_data->need_beacon &&
+		     !ifmgd->assoc_data->have_beacon) ||
 		    ieee80211_do_assoc(sdata)) {
 			u8 bssid[ETH_ALEN];
 
@@ -2979,7 +3377,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 			cfg80211_send_assoc_timeout(sdata->dev, bssid);
 			mutex_lock(&ifmgd->mtx);
 		}
-	} else if (ifmgd->assoc_data)
+	} else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
 		run_again(ifmgd, ifmgd->assoc_data->timeout);
 
 	if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
@@ -3010,7 +3408,8 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 					 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
 					 bssid);
 				ieee80211_sta_connection_lost(sdata, bssid,
-					WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
+					WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+					false);
 			}
 		} else if (time_is_after_jiffies(ifmgd->probe_timeout))
 			run_again(ifmgd, ifmgd->probe_timeout);
@@ -3019,7 +3418,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 				 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
 				 bssid, probe_wait_ms);
 			ieee80211_sta_connection_lost(sdata, bssid,
-				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
+				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
 		} else if (ifmgd->probe_send_count < max_tries) {
 			mlme_dbg(sdata,
 				 "No probe response from AP %pM after %dms, try %d/%i\n",
@@ -3038,15 +3437,11 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 				    bssid, probe_wait_ms);
 
 			ieee80211_sta_connection_lost(sdata, bssid,
-				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
+				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
 		}
 	}
 
 	mutex_unlock(&ifmgd->mtx);
-
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
-	mutex_unlock(&local->mtx);
 }
 
 static void ieee80211_sta_bcn_mon_timer(unsigned long data)
@@ -3058,6 +3453,7 @@ static void ieee80211_sta_bcn_mon_timer(unsigned long data)
 	if (local->quiescing)
 		return;
 
+	sdata->u.mgd.connection_loss = false;
 	ieee80211_queue_work(&sdata->local->hw,
 			     &sdata->u.mgd.beacon_connection_loss_work);
 }
@@ -3133,23 +3529,23 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
-	if (!ifmgd->associated)
+	mutex_lock(&ifmgd->mtx);
+	if (!ifmgd->associated) {
+		mutex_unlock(&ifmgd->mtx);
 		return;
+	}
 
 	if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
 		sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
-		mutex_lock(&ifmgd->mtx);
-		if (ifmgd->associated) {
-			mlme_dbg(sdata,
-				 "driver requested disconnect after resume\n");
-			ieee80211_sta_connection_lost(sdata,
-				ifmgd->associated->bssid,
-				WLAN_REASON_UNSPECIFIED);
-			mutex_unlock(&ifmgd->mtx);
-			return;
-		}
+		mlme_dbg(sdata, "driver requested disconnect after resume\n");
+		ieee80211_sta_connection_lost(sdata,
+					      ifmgd->associated->bssid,
+					      WLAN_REASON_UNSPECIFIED,
+					      true);
 		mutex_unlock(&ifmgd->mtx);
+		return;
 	}
+	mutex_unlock(&ifmgd->mtx);
 
 	if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running))
 		add_timer(&ifmgd->timer);
@@ -3225,201 +3621,6 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
 	return 0;
 }
 
-static u32 chandef_downgrade(struct cfg80211_chan_def *c)
-{
-	u32 ret;
-	int tmp;
-
-	switch (c->width) {
-	case NL80211_CHAN_WIDTH_20:
-		c->width = NL80211_CHAN_WIDTH_20_NOHT;
-		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
-		break;
-	case NL80211_CHAN_WIDTH_40:
-		c->width = NL80211_CHAN_WIDTH_20;
-		c->center_freq1 = c->chan->center_freq;
-		ret = IEEE80211_STA_DISABLE_40MHZ |
-		      IEEE80211_STA_DISABLE_VHT;
-		break;
-	case NL80211_CHAN_WIDTH_80:
-		tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
-		/* n_P40 */
-		tmp /= 2;
-		/* freq_P40 */
-		c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
-		c->width = NL80211_CHAN_WIDTH_40;
-		ret = IEEE80211_STA_DISABLE_VHT;
-		break;
-	case NL80211_CHAN_WIDTH_80P80:
-		c->center_freq2 = 0;
-		c->width = NL80211_CHAN_WIDTH_80;
-		ret = IEEE80211_STA_DISABLE_80P80MHZ |
-		      IEEE80211_STA_DISABLE_160MHZ;
-		break;
-	case NL80211_CHAN_WIDTH_160:
-		/* n_P20 */
-		tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
-		/* n_P80 */
-		tmp /= 4;
-		c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
-		c->width = NL80211_CHAN_WIDTH_80;
-		ret = IEEE80211_STA_DISABLE_80P80MHZ |
-		      IEEE80211_STA_DISABLE_160MHZ;
-		break;
-	default:
-	case NL80211_CHAN_WIDTH_20_NOHT:
-		WARN_ON_ONCE(1);
-		c->width = NL80211_CHAN_WIDTH_20_NOHT;
-		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
-		break;
-	}
-
-	WARN_ON_ONCE(!cfg80211_chandef_valid(c));
-
-	return ret;
-}
-
-static u32
-ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
-			     struct ieee80211_supported_band *sband,
-			     struct ieee80211_channel *channel,
-			     const struct ieee80211_ht_operation *ht_oper,
-			     const struct ieee80211_vht_operation *vht_oper,
-			     struct cfg80211_chan_def *chandef)
-{
-	struct cfg80211_chan_def vht_chandef;
-	u32 ht_cfreq, ret;
-
-	chandef->chan = channel;
-	chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
-	chandef->center_freq1 = channel->center_freq;
-	chandef->center_freq2 = 0;
-
-	if (!ht_oper || !sband->ht_cap.ht_supported) {
-		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	chandef->width = NL80211_CHAN_WIDTH_20;
-
-	ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
-						  channel->band);
-	/* check that channel matches the right operating channel */
-	if (channel->center_freq != ht_cfreq) {
-		/*
-		 * It's possible that some APs are confused here;
-		 * Netgear WNDR3700 sometimes reports 4 higher than
-		 * the actual channel in association responses, but
-		 * since we look at probe response/beacon data here
-		 * it should be OK.
-		 */
-		sdata_info(sdata,
-			   "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
-			   channel->center_freq, ht_cfreq,
-			   ht_oper->primary_chan, channel->band);
-		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	/* check 40 MHz support, if we have it */
-	if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
-		switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
-		case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
-			chandef->width = NL80211_CHAN_WIDTH_40;
-			chandef->center_freq1 += 10;
-			break;
-		case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
-			chandef->width = NL80211_CHAN_WIDTH_40;
-			chandef->center_freq1 -= 10;
-			break;
-		}
-	} else {
-		/* 40 MHz (and 80 MHz) must be supported for VHT */
-		ret = IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	if (!vht_oper || !sband->vht_cap.vht_supported) {
-		ret = IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	vht_chandef.chan = channel;
-	vht_chandef.center_freq1 =
-		ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
-					       channel->band);
-	vht_chandef.center_freq2 = 0;
-
-	if (vht_oper->center_freq_seg2_idx)
-		vht_chandef.center_freq2 =
-			ieee80211_channel_to_frequency(
-				vht_oper->center_freq_seg2_idx,
-				channel->band);
-
-	switch (vht_oper->chan_width) {
-	case IEEE80211_VHT_CHANWIDTH_USE_HT:
-		vht_chandef.width = chandef->width;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_80MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_80;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_160MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_160;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
-		break;
-	default:
-		sdata_info(sdata,
-			   "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
-			   vht_oper->chan_width);
-		ret = IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	if (!cfg80211_chandef_valid(&vht_chandef)) {
-		sdata_info(sdata,
-			   "AP VHT information is invalid, disable VHT\n");
-		ret = IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
-		ret = 0;
-		goto out;
-	}
-
-	if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
-		sdata_info(sdata,
-			   "AP VHT information doesn't match HT, disable VHT\n");
-		ret = IEEE80211_STA_DISABLE_VHT;
-		goto out;
-	}
-
-	*chandef = vht_chandef;
-
-	ret = 0;
-
-out:
-	while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
-					IEEE80211_CHAN_DISABLED)) {
-		if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
-			ret = IEEE80211_STA_DISABLE_HT |
-			      IEEE80211_STA_DISABLE_VHT;
-			goto out;
-		}
-
-		ret |= chandef_downgrade(chandef);
-	}
-
-	if (chandef->width != vht_chandef.width)
-		sdata_info(sdata,
-			   "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
-
-	WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
-	return ret;
-}
-
 static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
 				     struct cfg80211_bss *cbss)
 {
@@ -3485,16 +3686,22 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 
 	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
 	    sband->ht_cap.ht_supported) {
-		const u8 *ht_oper_ie;
+		const u8 *ht_oper_ie, *ht_cap;
 
 		ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
 		if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
 			ht_oper = (void *)(ht_oper_ie + 2);
+
+		ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
+		if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
+			ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
+			ht_oper = NULL;
+		}
 	}
 
 	if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
 	    sband->vht_cap.vht_supported) {
-		const u8 *vht_oper_ie;
+		const u8 *vht_oper_ie, *vht_cap;
 
 		vht_oper_ie = ieee80211_bss_get_ie(cbss,
 						   WLAN_EID_VHT_OPERATION);
@@ -3504,15 +3711,21 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 			vht_oper = NULL;
 			sdata_info(sdata,
 				   "AP advertised VHT without HT, disabling both\n");
-			sdata->flags |= IEEE80211_STA_DISABLE_HT;
-			sdata->flags |= IEEE80211_STA_DISABLE_VHT;
+			ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
+			ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+		}
+
+		vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
+		if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
+			ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+			vht_oper = NULL;
 		}
 	}
 
 	ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
 						     cbss->channel,
 						     ht_oper, vht_oper,
-						     &chandef);
+						     &chandef, true);
 
 	sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
 				      local->rx_chains);
@@ -3562,15 +3775,12 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 			return -ENOMEM;
 	}
 
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&local->mtx);
-
 	if (new_sta) {
 		u32 rates = 0, basic_rates = 0;
 		bool have_higher_than_11mbit;
 		int min_rate = INT_MAX, min_rate_index = -1;
 		struct ieee80211_supported_band *sband;
+		const struct cfg80211_bss_ies *ies;
 
 		sband = local->hw.wiphy->bands[cbss->channel->band];
 
@@ -3614,8 +3824,34 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 
 		/* set timing information */
 		sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
-		sdata->vif.bss_conf.sync_tsf = cbss->tsf;
-		sdata->vif.bss_conf.sync_device_ts = bss->device_ts;
+		rcu_read_lock();
+		ies = rcu_dereference(cbss->beacon_ies);
+		if (ies) {
+			const u8 *tim_ie;
+
+			sdata->vif.bss_conf.sync_tsf = ies->tsf;
+			sdata->vif.bss_conf.sync_device_ts =
+				bss->device_ts_beacon;
+			tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
+						  ies->data, ies->len);
+			if (tim_ie && tim_ie[1] >= 2)
+				sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
+			else
+				sdata->vif.bss_conf.sync_dtim_count = 0;
+		} else if (!(local->hw.flags &
+					IEEE80211_HW_TIMING_BEACON_ONLY)) {
+			ies = rcu_dereference(cbss->proberesp_ies);
+			/* must be non-NULL since beacon IEs were NULL */
+			sdata->vif.bss_conf.sync_tsf = ies->tsf;
+			sdata->vif.bss_conf.sync_device_ts =
+				bss->device_ts_presp;
+			sdata->vif.bss_conf.sync_dtim_count = 0;
+		} else {
+			sdata->vif.bss_conf.sync_tsf = 0;
+			sdata->vif.bss_conf.sync_device_ts = 0;
+			sdata->vif.bss_conf.sync_dtim_count = 0;
+		}
+		rcu_read_unlock();
 
 		/* tell driver about BSSID, basic rates and timing */
 		ieee80211_bss_info_change_notify(sdata,
@@ -3735,7 +3971,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 	}
 
 	/* hold our own reference */
-	cfg80211_ref_bss(auth_data->bss);
+	cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
 	err = 0;
 	goto out_unlock;
 
@@ -3758,8 +3994,9 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_bss *bss = (void *)req->bss->priv;
 	struct ieee80211_mgd_assoc_data *assoc_data;
+	const struct cfg80211_bss_ies *beacon_ies;
 	struct ieee80211_supported_band *sband;
-	const u8 *ssidie, *ht_ie;
+	const u8 *ssidie, *ht_ie, *vht_ie;
 	int i, err;
 
 	assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
@@ -3878,6 +4115,12 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 			((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
 	else
 		ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
+	vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
+	if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
+		memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
+		       sizeof(struct ieee80211_vht_cap));
+	else
+		ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
 	rcu_read_unlock();
 
 	if (bss->wmm_used && bss->uapsd_supported &&
@@ -3917,40 +4160,48 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	if (err)
 		goto err_clear;
 
-	if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
-		const struct cfg80211_bss_ies *beacon_ies;
+	rcu_read_lock();
+	beacon_ies = rcu_dereference(req->bss->beacon_ies);
 
-		rcu_read_lock();
-		beacon_ies = rcu_dereference(req->bss->beacon_ies);
-		if (!beacon_ies) {
-			/*
-			 * Wait up to one beacon interval ...
-			 * should this be more if we miss one?
-			 */
-			sdata_info(sdata, "waiting for beacon from %pM\n",
-				   ifmgd->bssid);
-			assoc_data->timeout =
-				TU_TO_EXP_TIME(req->bss->beacon_interval);
-		} else {
-			const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
-							    beacon_ies->data,
-							    beacon_ies->len);
-			if (tim_ie && tim_ie[1] >=
-					sizeof(struct ieee80211_tim_ie)) {
-				const struct ieee80211_tim_ie *tim;
-				tim = (void *)(tim_ie + 2);
-				ifmgd->dtim_period = tim->dtim_period;
-			}
-			assoc_data->have_beacon = true;
-			assoc_data->sent_assoc = false;
-			assoc_data->timeout = jiffies;
+	if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
+	    !beacon_ies) {
+		/*
+		 * Wait up to one beacon interval ...
+		 * should this be more if we miss one?
+		 */
+		sdata_info(sdata, "waiting for beacon from %pM\n",
+			   ifmgd->bssid);
+		assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
+		assoc_data->timeout_started = true;
+		assoc_data->need_beacon = true;
+	} else if (beacon_ies) {
+		const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
+						    beacon_ies->data,
+						    beacon_ies->len);
+		u8 dtim_count = 0;
+
+		if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
+			const struct ieee80211_tim_ie *tim;
+			tim = (void *)(tim_ie + 2);
+			ifmgd->dtim_period = tim->dtim_period;
+			dtim_count = tim->dtim_count;
 		}
-		rcu_read_unlock();
-	} else {
 		assoc_data->have_beacon = true;
-		assoc_data->sent_assoc = false;
 		assoc_data->timeout = jiffies;
+		assoc_data->timeout_started = true;
+
+		if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
+			sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
+			sdata->vif.bss_conf.sync_device_ts =
+				bss->device_ts_beacon;
+			sdata->vif.bss_conf.sync_dtim_count = dtim_count;
+		}
+	} else {
+		assoc_data->timeout = jiffies;
+		assoc_data->timeout_started = true;
 	}
+	rcu_read_unlock();
+
 	run_again(ifmgd, assoc_data->timeout);
 
 	if (bss->corrupt_data) {
@@ -4017,10 +4268,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 	mutex_unlock(&ifmgd->mtx);
 
  out:
-	mutex_lock(&sdata->local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&sdata->local->mtx);
-
 	if (sent_frame)
 		__cfg80211_send_deauth(sdata->dev, frame_buf,
 				       IEEE80211_DEAUTH_FRAME_LEN);
@@ -4061,10 +4308,6 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
 	__cfg80211_send_disassoc(sdata->dev, frame_buf,
 				 IEEE80211_DEAUTH_FRAME_LEN);
 
-	mutex_lock(&sdata->local->mtx);
-	ieee80211_recalc_idle(sdata->local);
-	mutex_unlock(&sdata->local->mtx);
-
 	return 0;
 }