Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

Conflicts:
	net/wireless/nl80211.c

26 files changed, 682 insertions, 555 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ace5e55..061523e 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -597,7 +597,15 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
 	struct hci_dev *hdev = req->hdev;
 	u8 p;
 
-	/* Only send HCI_Delete_Stored_Link_Key if it is supported */
+	/* Some Broadcom based Bluetooth controllers do not support the
+	 * Delete Stored Link Key command. They are clearly indicating its
+	 * absence in the bit mask of supported commands.
+	 *
+	 * Check the supported commands and only if the the command is marked
+	 * as supported send it. If not supported assume that the controller
+	 * does not have actual support for stored link keys which makes this
+	 * command redundant anyway.
+         */
 	if (hdev->commands[6] & 0x80) {
 		struct hci_cp_delete_stored_link_key cp;
 
@@ -751,7 +759,7 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
 	hdev->discovery.state = state;
 }
 
-static void inquiry_cache_flush(struct hci_dev *hdev)
+void hci_inquiry_cache_flush(struct hci_dev *hdev)
 {
 	struct discovery_state *cache = &hdev->discovery;
 	struct inquiry_entry *p, *n;
@@ -964,7 +972,7 @@ int hci_inquiry(void __user *arg)
 	hci_dev_lock(hdev);
 	if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
 	    inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) {
-		inquiry_cache_flush(hdev);
+		hci_inquiry_cache_flush(hdev);
 		do_inquiry = 1;
 	}
 	hci_dev_unlock(hdev);
@@ -1201,8 +1209,6 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 {
 	BT_DBG("%s %p", hdev->name, hdev);
 
-	cancel_work_sync(&hdev->le_scan);
-
 	cancel_delayed_work(&hdev->power_off);
 
 	hci_req_cancel(hdev, ENODEV);
@@ -1230,7 +1236,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	cancel_delayed_work_sync(&hdev->le_scan_disable);
 
 	hci_dev_lock(hdev);
-	inquiry_cache_flush(hdev);
+	hci_inquiry_cache_flush(hdev);
 	hci_conn_hash_flush(hdev);
 	hci_dev_unlock(hdev);
 
@@ -1331,7 +1337,7 @@ int hci_dev_reset(__u16 dev)
 	skb_queue_purge(&hdev->cmd_q);
 
 	hci_dev_lock(hdev);
-	inquiry_cache_flush(hdev);
+	hci_inquiry_cache_flush(hdev);
 	hci_conn_hash_flush(hdev);
 	hci_dev_unlock(hdev);
 
@@ -1991,80 +1997,59 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 	return mgmt_device_unblocked(hdev, bdaddr, type);
 }
 
-static void le_scan_param_req(struct hci_request *req, unsigned long opt)
+static void inquiry_complete(struct hci_dev *hdev, u8 status)
 {
-	struct le_scan_params *param =  (struct le_scan_params *) opt;
-	struct hci_cp_le_set_scan_param cp;
-
-	memset(&cp, 0, sizeof(cp));
-	cp.type = param->type;
-	cp.interval = cpu_to_le16(param->interval);
-	cp.window = cpu_to_le16(param->window);
+	if (status) {
+		BT_ERR("Failed to start inquiry: status %d", status);
 
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp);
-}
-
-static void le_scan_enable_req(struct hci_request *req, unsigned long opt)
-{
-	struct hci_cp_le_set_scan_enable cp;
-
-	memset(&cp, 0, sizeof(cp));
-	cp.enable = LE_SCAN_ENABLE;
-	cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
-
-	hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+		hci_dev_lock(hdev);
+		hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+		hci_dev_unlock(hdev);
+		return;
+	}
 }
 
-static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval,
-			  u16 window, int timeout)
+static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status)
 {
-	long timeo = msecs_to_jiffies(3000);
-	struct le_scan_params param;
+	/* General inquiry access code (GIAC) */
+	u8 lap[3] = { 0x33, 0x8b, 0x9e };
+	struct hci_request req;
+	struct hci_cp_inquiry cp;
 	int err;
 
-	BT_DBG("%s", hdev->name);
-
-	if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
-		return -EINPROGRESS;
-
-	param.type = type;
-	param.interval = interval;
-	param.window = window;
-
-	hci_req_lock(hdev);
-
-	err = __hci_req_sync(hdev, le_scan_param_req, (unsigned long) &param,
-			     timeo);
-	if (!err)
-		err = __hci_req_sync(hdev, le_scan_enable_req, 0, timeo);
-
-	hci_req_unlock(hdev);
+	if (status) {
+		BT_ERR("Failed to disable LE scanning: status %d", status);
+		return;
+	}
 
-	if (err < 0)
-		return err;
+	switch (hdev->discovery.type) {
+	case DISCOV_TYPE_LE:
+		hci_dev_lock(hdev);
+		hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+		hci_dev_unlock(hdev);
+		break;
 
-	queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
-			   timeout);
+	case DISCOV_TYPE_INTERLEAVED:
+		hci_req_init(&req, hdev);
 
-	return 0;
-}
+		memset(&cp, 0, sizeof(cp));
+		memcpy(&cp.lap, lap, sizeof(cp.lap));
+		cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN;
+		hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp);
 
-int hci_cancel_le_scan(struct hci_dev *hdev)
-{
-	BT_DBG("%s", hdev->name);
+		hci_dev_lock(hdev);
 
-	if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags))
-		return -EALREADY;
+		hci_inquiry_cache_flush(hdev);
 
-	if (cancel_delayed_work(&hdev->le_scan_disable)) {
-		struct hci_cp_le_set_scan_enable cp;
+		err = hci_req_run(&req, inquiry_complete);
+		if (err) {
+			BT_ERR("Inquiry request failed: err %d", err);
+			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+		}
 
-		/* Send HCI command to disable LE Scan */
-		memset(&cp, 0, sizeof(cp));
-		hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+		hci_dev_unlock(hdev);
+		break;
 	}
-
-	return 0;
 }
 
 static void le_scan_disable_work(struct work_struct *work)
@@ -2072,46 +2057,20 @@ static void le_scan_disable_work(struct work_struct *work)
 	struct hci_dev *hdev = container_of(work, struct hci_dev,
 					    le_scan_disable.work);
 	struct hci_cp_le_set_scan_enable cp;
+	struct hci_request req;
+	int err;
 
 	BT_DBG("%s", hdev->name);
 
-	memset(&cp, 0, sizeof(cp));
-
-	hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
-}
-
-static void le_scan_work(struct work_struct *work)
-{
-	struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan);
-	struct le_scan_params *param = &hdev->le_scan_params;
+	hci_req_init(&req, hdev);
 
-	BT_DBG("%s", hdev->name);
+	memset(&cp, 0, sizeof(cp));
+	cp.enable = LE_SCAN_DISABLE;
+	hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
 
-	hci_do_le_scan(hdev, param->type, param->interval, param->window,
-		       param->timeout);
-}
-
-int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
-		int timeout)
-{
-	struct le_scan_params *param = &hdev->le_scan_params;
-
-	BT_DBG("%s", hdev->name);
-
-	if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags))
-		return -ENOTSUPP;
-
-	if (work_busy(&hdev->le_scan))
-		return -EINPROGRESS;
-
-	param->type = type;
-	param->interval = interval;
-	param->window = window;
-	param->timeout = timeout;
-
-	queue_work(system_long_wq, &hdev->le_scan);
-
-	return 0;
+	err = hci_req_run(&req, le_scan_disable_work_complete);
+	if (err)
+		BT_ERR("Disable LE scanning request failed: err %d", err);
 }
 
 /* Alloc HCI device */
@@ -2148,7 +2107,6 @@ struct hci_dev *hci_alloc_dev(void)
 	INIT_WORK(&hdev->cmd_work, hci_cmd_work);
 	INIT_WORK(&hdev->tx_work, hci_tx_work);
 	INIT_WORK(&hdev->power_on, hci_power_on);
-	INIT_WORK(&hdev->le_scan, le_scan_work);
 
 	INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
 	INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
@@ -3551,36 +3509,6 @@ static void hci_cmd_work(struct work_struct *work)
 	}
 }
 
-int hci_do_inquiry(struct hci_dev *hdev, u8 length)
-{
-	/* General inquiry access code (GIAC) */
-	u8 lap[3] = { 0x33, 0x8b, 0x9e };
-	struct hci_cp_inquiry cp;
-
-	BT_DBG("%s", hdev->name);
-
-	if (test_bit(HCI_INQUIRY, &hdev->flags))
-		return -EINPROGRESS;
-
-	inquiry_cache_flush(hdev);
-
-	memset(&cp, 0, sizeof(cp));
-	memcpy(&cp.lap, lap, sizeof(cp.lap));
-	cp.length  = length;
-
-	return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp);
-}
-
-int hci_cancel_inquiry(struct hci_dev *hdev)
-{
-	BT_DBG("%s", hdev->name);
-
-	if (!test_bit(HCI_INQUIRY, &hdev->flags))
-		return -EALREADY;
-
-	return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL);
-}
-
 u8 bdaddr_to_le(u8 bdaddr_type)
 {
 	switch (bdaddr_type) {
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b93cd2e..0437200 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -40,21 +40,13 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, status);
 
-	if (status) {
-		hci_dev_lock(hdev);
-		mgmt_stop_discovery_failed(hdev, status);
-		hci_dev_unlock(hdev);
+	if (status)
 		return;
-	}
 
 	clear_bit(HCI_INQUIRY, &hdev->flags);
 	smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
 	wake_up_bit(&hdev->flags, HCI_INQUIRY);
 
-	hci_dev_lock(hdev);
-	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-	hci_dev_unlock(hdev);
-
 	hci_conn_check_pending(hdev);
 }
 
@@ -937,20 +929,6 @@ static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
 	hci_dev_unlock(hdev);
 }
 
-static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
-{
-	__u8 status = *((__u8 *) skb->data);
-
-	BT_DBG("%s status 0x%2.2x", hdev->name, status);
-
-	if (status) {
-		hci_dev_lock(hdev);
-		mgmt_start_discovery_failed(hdev, status);
-		hci_dev_unlock(hdev);
-		return;
-	}
-}
-
 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
 				      struct sk_buff *skb)
 {
@@ -963,41 +941,16 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
 	if (!cp)
 		return;
 
+	if (status)
+		return;
+
 	switch (cp->enable) {
 	case LE_SCAN_ENABLE:
-		if (status) {
-			hci_dev_lock(hdev);
-			mgmt_start_discovery_failed(hdev, status);
-			hci_dev_unlock(hdev);
-			return;
-		}
-
 		set_bit(HCI_LE_SCAN, &hdev->dev_flags);
-
-		hci_dev_lock(hdev);
-		hci_discovery_set_state(hdev, DISCOVERY_FINDING);
-		hci_dev_unlock(hdev);
 		break;
 
 	case LE_SCAN_DISABLE:
-		if (status) {
-			hci_dev_lock(hdev);
-			mgmt_stop_discovery_failed(hdev, status);
-			hci_dev_unlock(hdev);
-			return;
-		}
-
 		clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
-
-		if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
-		    hdev->discovery.state == DISCOVERY_FINDING) {
-			mgmt_interleaved_discovery(hdev);
-		} else {
-			hci_dev_lock(hdev);
-			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-			hci_dev_unlock(hdev);
-		}
-
 		break;
 
 	default:
@@ -1077,18 +1030,10 @@ static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 
 	if (status) {
 		hci_conn_check_pending(hdev);
-		hci_dev_lock(hdev);
-		if (test_bit(HCI_MGMT, &hdev->dev_flags))
-			mgmt_start_discovery_failed(hdev, status);
-		hci_dev_unlock(hdev);
 		return;
 	}
 
 	set_bit(HCI_INQUIRY, &hdev->flags);
-
-	hci_dev_lock(hdev);
-	hci_discovery_set_state(hdev, DISCOVERY_FINDING);
-	hci_dev_unlock(hdev);
 }
 
 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
@@ -2298,10 +2243,6 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		hci_cc_user_passkey_neg_reply(hdev, skb);
 		break;
 
-	case HCI_OP_LE_SET_SCAN_PARAM:
-		hci_cc_le_set_scan_param(hdev, skb);
-		break;
-
 	case HCI_OP_LE_SET_ADV_ENABLE:
 		hci_cc_le_set_adv_enable(hdev, skb);
 		break;
@@ -2670,7 +2611,7 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+	if (!test_bit(HCI_MGMT, &hdev->dev_flags))
 		return;
 
 	hci_dev_lock(hdev);
@@ -2746,7 +2687,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		hci_conn_drop(conn);
 	}
 
-	if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+	if (test_bit(HCI_MGMT, &hdev->dev_flags))
 		hci_add_link_key(hdev, conn, 1, &ev->bdaddr, ev->link_key,
 				 ev->key_type, pin_len);
 
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 940f5ac..f13a8da 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -76,25 +76,19 @@ static void hidp_copy_session(struct hidp_session *session, struct hidp_conninfo
 	ci->flags = session->flags;
 	ci->state = BT_CONNECTED;
 
-	ci->vendor  = 0x0000;
-	ci->product = 0x0000;
-	ci->version = 0x0000;
-
 	if (session->input) {
 		ci->vendor  = session->input->id.vendor;
 		ci->product = session->input->id.product;
 		ci->version = session->input->id.version;
 		if (session->input->name)
-			strncpy(ci->name, session->input->name, 128);
+			strlcpy(ci->name, session->input->name, 128);
 		else
-			strncpy(ci->name, "HID Boot Device", 128);
-	}
-
-	if (session->hid) {
+			strlcpy(ci->name, "HID Boot Device", 128);
+	} else if (session->hid) {
 		ci->vendor  = session->hid->vendor;
 		ci->product = session->hid->product;
 		ci->version = session->hid->version;
-		strncpy(ci->name, session->hid->name, 128);
+		strlcpy(ci->name, session->hid->name, 128);
 	}
 }
 
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 4be6a26..8c3499be 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -504,8 +504,10 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
 		if (conn->hcon->type == LE_LINK) {
 			/* LE connection */
 			chan->omtu = L2CAP_DEFAULT_MTU;
-			chan->scid = L2CAP_CID_LE_DATA;
-			chan->dcid = L2CAP_CID_LE_DATA;
+			if (chan->dcid == L2CAP_CID_ATT)
+				chan->scid = L2CAP_CID_ATT;
+			else
+				chan->scid = l2cap_alloc_cid(conn);
 		} else {
 			/* Alloc CID for connection-oriented socket */
 			chan->scid = l2cap_alloc_cid(conn);
@@ -543,6 +545,8 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
 
 	l2cap_chan_hold(chan);
 
+	hci_conn_hold(conn->hcon);
+
 	list_add(&chan->list, &conn->chan_l);
 }
 
@@ -1338,17 +1342,21 @@ static struct l2cap_chan *l2cap_global_chan_by_scid(int state, u16 cid,
 
 static void l2cap_le_conn_ready(struct l2cap_conn *conn)
 {
-	struct sock *parent, *sk;
+	struct sock *parent;
 	struct l2cap_chan *chan, *pchan;
 
 	BT_DBG("");
 
 	/* Check if we have socket listening on cid */
-	pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_LE_DATA,
+	pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_ATT,
 					  conn->src, conn->dst);
 	if (!pchan)
 		return;
 
+	/* Client ATT sockets should override the server one */
+	if (__l2cap_get_chan_by_dcid(conn, L2CAP_CID_ATT))
+		return;
+
 	parent = pchan->sk;
 
 	lock_sock(parent);
@@ -1357,17 +1365,12 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
 	if (!chan)
 		goto clean;
 
-	sk = chan->sk;
+	chan->dcid = L2CAP_CID_ATT;
 
-	hci_conn_hold(conn->hcon);
-	conn->hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
+	bacpy(&bt_sk(chan->sk)->src, conn->src);
+	bacpy(&bt_sk(chan->sk)->dst, conn->dst);
 
-	bacpy(&bt_sk(sk)->src, conn->src);
-	bacpy(&bt_sk(sk)->dst, conn->dst);
-
-	l2cap_chan_add(conn, chan);
-
-	l2cap_chan_ready(chan);
+	__l2cap_chan_add(conn, chan);
 
 clean:
 	release_sock(parent);
@@ -1380,14 +1383,17 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
 
 	BT_DBG("conn %p", conn);
 
-	if (!hcon->out && hcon->type == LE_LINK)
-		l2cap_le_conn_ready(conn);
-
+	/* For outgoing pairing which doesn't necessarily have an
+	 * associated socket (e.g. mgmt_pair_device).
+	 */
 	if (hcon->out && hcon->type == LE_LINK)
 		smp_conn_security(hcon, hcon->pending_sec_level);
 
 	mutex_lock(&conn->chan_lock);
 
+	if (hcon->type == LE_LINK)
+		l2cap_le_conn_ready(conn);
+
 	list_for_each_entry(chan, &conn->chan_l, list) {
 
 		l2cap_chan_lock(chan);
@@ -1792,7 +1798,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 
 	auth_type = l2cap_get_auth_type(chan);
 
-	if (chan->dcid == L2CAP_CID_LE_DATA)
+	if (bdaddr_type_is_le(dst_type))
 		hcon = hci_connect(hdev, LE_LINK, dst, dst_type,
 				   chan->sec_level, auth_type);
 	else
@@ -1811,16 +1817,10 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 		goto done;
 	}
 
-	if (hcon->type == LE_LINK) {
-		err = 0;
-
-		if (!list_empty(&conn->chan_l)) {
-			err = -EBUSY;
-			hci_conn_drop(hcon);
-		}
-
-		if (err)
-			goto done;
+	if (cid && __l2cap_get_chan_by_dcid(conn, cid)) {
+		hci_conn_drop(hcon);
+		err = -EBUSY;
+		goto done;
 	}
 
 	/* Update source addr of the socket */
@@ -1830,6 +1830,9 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 	l2cap_chan_add(conn, chan);
 	l2cap_chan_lock(chan);
 
+	/* l2cap_chan_add takes its own ref so we can drop this one */
+	hci_conn_drop(hcon);
+
 	l2cap_state_change(chan, BT_CONNECT);
 	__set_chan_timer(chan, sk->sk_sndtimeo);
 
@@ -3751,8 +3754,6 @@ static struct l2cap_chan *l2cap_connect(struct l2cap_conn *conn,
 
 	sk = chan->sk;
 
-	hci_conn_hold(conn->hcon);
-
 	bacpy(&bt_sk(sk)->src, conn->src);
 	bacpy(&bt_sk(sk)->dst, conn->dst);
 	chan->psm  = psm;
@@ -4333,7 +4334,7 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn,
 	struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data;
 	u16 type, result;
 
-	if (cmd_len != sizeof(*rsp))
+	if (cmd_len < sizeof(*rsp))
 		return -EPROTO;
 
 	type   = __le16_to_cpu(rsp->type);
@@ -5292,6 +5293,51 @@ static inline int l2cap_le_sig_cmd(struct l2cap_conn *conn,
 	}
 }
 
+static inline void l2cap_le_sig_channel(struct l2cap_conn *conn,
+					struct sk_buff *skb)
+{
+	u8 *data = skb->data;
+	int len = skb->len;
+	struct l2cap_cmd_hdr cmd;
+	int err;
+
+	l2cap_raw_recv(conn, skb);
+
+	while (len >= L2CAP_CMD_HDR_SIZE) {
+		u16 cmd_len;
+		memcpy(&cmd, data, L2CAP_CMD_HDR_SIZE);
+		data += L2CAP_CMD_HDR_SIZE;
+		len  -= L2CAP_CMD_HDR_SIZE;
+
+		cmd_len = le16_to_cpu(cmd.len);
+
+		BT_DBG("code 0x%2.2x len %d id 0x%2.2x", cmd.code, cmd_len,
+		       cmd.ident);
+
+		if (cmd_len > len || !cmd.ident) {
+			BT_DBG("corrupted command");
+			break;
+		}
+
+		err = l2cap_le_sig_cmd(conn, &cmd, data);
+		if (err) {
+			struct l2cap_cmd_rej_unk rej;
+
+			BT_ERR("Wrong link type (%d)", err);
+
+			/* FIXME: Map err to a valid reason */
+			rej.reason = __constant_cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD);
+			l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ,
+				       sizeof(rej), &rej);
+		}
+
+		data += cmd_len;
+		len  -= cmd_len;
+	}
+
+	kfree_skb(skb);
+}
+
 static inline void l2cap_sig_channel(struct l2cap_conn *conn,
 				     struct sk_buff *skb)
 {
@@ -5318,11 +5364,7 @@ static inline void l2cap_sig_channel(struct l2cap_conn *conn,
 			break;
 		}
 
-		if (conn->hcon->type == LE_LINK)
-			err = l2cap_le_sig_cmd(conn, &cmd, data);
-		else
-			err = l2cap_bredr_sig_cmd(conn, &cmd, cmd_len, data);
-
+		err = l2cap_bredr_sig_cmd(conn, &cmd, cmd_len, data);
 		if (err) {
 			struct l2cap_cmd_rej_unk rej;
 
@@ -6356,16 +6398,13 @@ static void l2cap_att_channel(struct l2cap_conn *conn,
 {
 	struct l2cap_chan *chan;
 
-	chan = l2cap_global_chan_by_scid(0, L2CAP_CID_LE_DATA,
+	chan = l2cap_global_chan_by_scid(BT_CONNECTED, L2CAP_CID_ATT,
 					 conn->src, conn->dst);
 	if (!chan)
 		goto drop;
 
 	BT_DBG("chan %p, len %d", chan, skb->len);
 
-	if (chan->state != BT_BOUND && chan->state != BT_CONNECTED)
-		goto drop;
-
 	if (chan->imtu < skb->len)
 		goto drop;
 
@@ -6395,6 +6434,8 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
 
 	switch (cid) {
 	case L2CAP_CID_LE_SIGNALING:
+		l2cap_le_sig_channel(conn, skb);
+		break;
 	case L2CAP_CID_SIGNALING:
 		l2cap_sig_channel(conn, skb);
 		break;
@@ -6405,7 +6446,7 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
 		l2cap_conless_channel(conn, psm, skb);
 		break;
 
-	case L2CAP_CID_LE_DATA:
+	case L2CAP_CID_ATT:
 		l2cap_att_channel(conn, skb);
 		break;
 
@@ -6531,7 +6572,7 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 			continue;
 		}
 
-		if (chan->scid == L2CAP_CID_LE_DATA) {
+		if (chan->scid == L2CAP_CID_ATT) {
 			if (!status && encrypt) {
 				chan->sec_level = hcon->sec_level;
 				l2cap_chan_ready(chan);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 36fed40..0098af8 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -466,7 +466,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
 static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu)
 {
 	switch (chan->scid) {
-	case L2CAP_CID_LE_DATA:
+	case L2CAP_CID_ATT:
 		if (mtu < L2CAP_LE_MIN_MTU)
 			return false;
 		break;
@@ -630,7 +630,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 		conn = chan->conn;
 
 		/*change security for LE channels */
-		if (chan->scid == L2CAP_CID_LE_DATA) {
+		if (chan->scid == L2CAP_CID_ATT) {
 			if (!conn->hcon->out) {
 				err = -EINVAL;
 				break;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f8ecbc7..fedc539 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -102,18 +102,6 @@ static const u16 mgmt_events[] = {
 	MGMT_EV_PASSKEY_NOTIFY,
 };
 
-/*
- * These LE scan and inquiry parameters were chosen according to LE General
- * Discovery Procedure specification.
- */
-#define LE_SCAN_WIN			0x12
-#define LE_SCAN_INT			0x12
-#define LE_SCAN_TIMEOUT_LE_ONLY		msecs_to_jiffies(10240)
-#define LE_SCAN_TIMEOUT_BREDR_LE	msecs_to_jiffies(5120)
-
-#define INQUIRY_LEN_BREDR		0x08	/* TGAP(100) */
-#define INQUIRY_LEN_BREDR_LE		0x04	/* TGAP(100)/2 */
-
 #define CACHE_TIMEOUT	msecs_to_jiffies(2 * 1000)
 
 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
@@ -1748,8 +1736,6 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
 
 	hci_link_keys_clear(hdev);
 
-	set_bit(HCI_LINK_KEYS, &hdev->dev_flags);
-
 	if (cp->debug_keys)
 		set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
 	else
@@ -2633,28 +2619,72 @@ static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
 	return err;
 }
 
-int mgmt_interleaved_discovery(struct hci_dev *hdev)
+static int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
 {
+	struct pending_cmd *cmd;
+	u8 type;
 	int err;
 
-	BT_DBG("%s", hdev->name);
+	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 
-	hci_dev_lock(hdev);
+	cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
+	if (!cmd)
+		return -ENOENT;
 
-	err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR_LE);
-	if (err < 0)
-		hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+	type = hdev->discovery.type;
 
-	hci_dev_unlock(hdev);
+	err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+			   &type, sizeof(type));
+	mgmt_pending_remove(cmd);
 
 	return err;
 }
 
+static void start_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+	BT_DBG("status %d", status);
+
+	if (status) {
+		hci_dev_lock(hdev);
+		mgmt_start_discovery_failed(hdev, status);
+		hci_dev_unlock(hdev);
+		return;
+	}
+
+	hci_dev_lock(hdev);
+	hci_discovery_set_state(hdev, DISCOVERY_FINDING);
+	hci_dev_unlock(hdev);
+
+	switch (hdev->discovery.type) {
+	case DISCOV_TYPE_LE:
+		queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+				   DISCOV_LE_TIMEOUT);
+		break;
+
+	case DISCOV_TYPE_INTERLEAVED:
+		queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+				   DISCOV_INTERLEAVED_TIMEOUT);
+		break;
+
+	case DISCOV_TYPE_BREDR:
+		break;
+
+	default:
+		BT_ERR("Invalid discovery type %d", hdev->discovery.type);
+	}
+}
+
 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 			   void *data, u16 len)
 {
 	struct mgmt_cp_start_discovery *cp = data;
 	struct pending_cmd *cmd;
+	struct hci_cp_le_set_scan_param param_cp;
+	struct hci_cp_le_set_scan_enable enable_cp;
+	struct hci_cp_inquiry inq_cp;
+	struct hci_request req;
+	/* General inquiry access code (GIAC) */
+	u8 lap[3] = { 0x33, 0x8b, 0x9e };
 	int err;
 
 	BT_DBG("%s", hdev->name);
@@ -2687,6 +2717,8 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 
 	hdev->discovery.type = cp->type;
 
+	hci_req_init(&req, hdev);
+
 	switch (hdev->discovery.type) {
 	case DISCOV_TYPE_BREDR:
 		if (!lmp_bredr_capable(hdev)) {
@@ -2696,10 +2728,23 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 			goto failed;
 		}
 
-		err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
+		if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+			err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+					 MGMT_STATUS_BUSY);
+			mgmt_pending_remove(cmd);
+			goto failed;
+		}
+
+		hci_inquiry_cache_flush(hdev);
+
+		memset(&inq_cp, 0, sizeof(inq_cp));
+		memcpy(&inq_cp.lap, lap, sizeof(inq_cp.lap));
+		inq_cp.length = DISCOV_BREDR_INQUIRY_LEN;
+		hci_req_add(&req, HCI_OP_INQUIRY, sizeof(inq_cp), &inq_cp);
 		break;
 
 	case DISCOV_TYPE_LE:
+	case DISCOV_TYPE_INTERLEAVED:
 		if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
 			err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
 					 MGMT_STATUS_NOT_SUPPORTED);
@@ -2707,20 +2752,40 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 			goto failed;
 		}
 
-		err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
-				  LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
-		break;
-
-	case DISCOV_TYPE_INTERLEAVED:
-		if (!lmp_host_le_capable(hdev) || !lmp_bredr_capable(hdev)) {
+		if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
+		    !lmp_bredr_capable(hdev)) {
 			err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
 					 MGMT_STATUS_NOT_SUPPORTED);
 			mgmt_pending_remove(cmd);
 			goto failed;
 		}
 
-		err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
-				  LE_SCAN_WIN, LE_SCAN_TIMEOUT_BREDR_LE);
+		if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) {
+			err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+					 MGMT_STATUS_REJECTED);
+			mgmt_pending_remove(cmd);
+			goto failed;
+		}
+
+		if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+			err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+					 MGMT_STATUS_BUSY);
+			mgmt_pending_remove(cmd);
+			goto failed;
+		}
+
+		memset(&param_cp, 0, sizeof(param_cp));
+		param_cp.type = LE_SCAN_ACTIVE;
+		param_cp.interval = cpu_to_le16(DISCOV_LE_SCAN_INT);
+		param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
+		hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+			    &param_cp);
+
+		memset(&enable_cp, 0, sizeof(enable_cp));
+		enable_cp.enable = LE_SCAN_ENABLE;
+		enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
+		hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+			    &enable_cp);
 		break;
 
 	default:
@@ -2730,6 +2795,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 		goto failed;
 	}
 
+	err = hci_req_run(&req, start_discovery_complete);
 	if (err < 0)
 		mgmt_pending_remove(cmd);
 	else
@@ -2740,6 +2806,39 @@ failed:
 	return err;
 }
 
+static int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
+{
+	struct pending_cmd *cmd;
+	int err;
+
+	cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
+	if (!cmd)
+		return -ENOENT;
+
+	err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+			   &hdev->discovery.type, sizeof(hdev->discovery.type));
+	mgmt_pending_remove(cmd);
+
+	return err;
+}
+
+static void stop_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+	BT_DBG("status %d", status);
+
+	hci_dev_lock(hdev);
+
+	if (status) {
+		mgmt_stop_discovery_failed(hdev, status);
+		goto unlock;
+	}
+
+	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
 			  u16 len)
 {
@@ -2747,6 +2846,8 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
 	struct pending_cmd *cmd;
 	struct hci_cp_remote_name_req_cancel cp;
 	struct inquiry_entry *e;
+	struct hci_request req;
+	struct hci_cp_le_set_scan_enable enable_cp;
 	int err;
 
 	BT_DBG("%s", hdev->name);
@@ -2773,12 +2874,20 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
 		goto unlock;
 	}
 
+	hci_req_init(&req, hdev);
+
 	switch (hdev->discovery.state) {
 	case DISCOVERY_FINDING:
-		if (test_bit(HCI_INQUIRY, &hdev->flags))
-			err = hci_cancel_inquiry(hdev);
-		else
-			err = hci_cancel_le_scan(hdev);
+		if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+			hci_req_add(&req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
+		} else {
+			cancel_delayed_work(&hdev->le_scan_disable);
+
+			memset(&enable_cp, 0, sizeof(enable_cp));
+			enable_cp.enable = LE_SCAN_DISABLE;
+			hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
+				    sizeof(enable_cp), &enable_cp);
+		}
 
 		break;
 
@@ -2796,16 +2905,22 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
 		}
 
 		bacpy(&cp.bdaddr, &e->data.bdaddr);
-		err = hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
-				   sizeof(cp), &cp);
+		hci_req_add(&req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
+			    &cp);
 
 		break;
 
 	default:
 		BT_DBG("unknown discovery state %u", hdev->discovery.state);
-		err = -EFAULT;
+
+		mgmt_pending_remove(cmd);
+		err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
+				   MGMT_STATUS_FAILED, &mgmt_cp->type,
+				   sizeof(mgmt_cp->type));
+		goto unlock;
 	}
 
+	err = hci_req_run(&req, stop_discovery_complete);
 	if (err < 0)
 		mgmt_pending_remove(cmd);
 	else
@@ -4063,6 +4178,9 @@ int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 	struct mgmt_ev_device_found *ev = (void *) buf;
 	size_t ev_size;
 
+	if (!hci_discovery_active(hdev))
+		return -EPERM;
+
 	/* Leave 5 bytes for a potential CoD field */
 	if (sizeof(*ev) + eir_len + 5 > sizeof(buf))
 		return -EINVAL;
@@ -4114,43 +4232,6 @@ int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 			  sizeof(*ev) + eir_len, NULL);
 }
 
-int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
-{
-	struct pending_cmd *cmd;
-	u8 type;
-	int err;
-
-	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-
-	cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
-	if (!cmd)
-		return -ENOENT;
-
-	type = hdev->discovery.type;
-
-	err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
-			   &type, sizeof(type));
-	mgmt_pending_remove(cmd);
-
-	return err;
-}
-
-int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
-{
-	struct pending_cmd *cmd;
-	int err;
-
-	cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
-	if (!cmd)
-		return -ENOENT;
-
-	err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
-			   &hdev->discovery.type, sizeof(hdev->discovery.type));
-	mgmt_pending_remove(cmd);
-
-	return err;
-}
-
 int mgmt_discovering(struct hci_dev *hdev, u8 discovering)
 {
 	struct mgmt_ev_discovering ev;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 082f270..8184d12 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2827,7 +2827,8 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 		    !rcu_access_pointer(sdata->bss->beacon))
 			need_offchan = true;
 		if (!ieee80211_is_action(mgmt->frame_control) ||
-		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
+		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
+		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED)
 			break;
 		rcu_read_lock();
 		sta = sta_info_get(sdata, mgmt->da);
@@ -2930,19 +2931,8 @@ static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
 					  u16 frame_type, bool reg)
 {
 	struct ieee80211_local *local = wiphy_priv(wiphy);
-	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 
 	switch (frame_type) {
-	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
-		if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
-			struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
-
-			if (reg)
-				ifibss->auth_frame_registrations++;
-			else
-				ifibss->auth_frame_registrations--;
-		}
-		break;
 	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
 		if (reg)
 			local->probe_req_reg++;
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 75dff33..f83534f 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -281,13 +281,14 @@ void ieee80211_ba_session_work(struct work_struct *work)
 				sta, tid, WLAN_BACK_RECIPIENT,
 				WLAN_REASON_UNSPECIFIED, true);
 
+		spin_lock_bh(&sta->lock);
+
 		tid_tx = sta->ampdu_mlme.tid_start_tx[tid];
 		if (tid_tx) {
 			/*
 			 * Assign it over to the normal tid_tx array
 			 * where it "goes live".
 			 */
-			spin_lock_bh(&sta->lock);
 
 			sta->ampdu_mlme.tid_start_tx[tid] = NULL;
 			/* could there be a race? */
@@ -300,6 +301,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
 			ieee80211_tx_ba_session_handle_start(sta, tid);
 			continue;
 		}
+		spin_unlock_bh(&sta->lock);
 
 		tid_tx = rcu_dereference_protected_tid_tx(sta, tid);
 		if (tid_tx && test_and_clear_bit(HT_AGG_STATE_WANT_STOP,
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index caa4b4f..ea7b9c2 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -81,7 +81,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 
-	cfg80211_chandef_create(&chandef, chan, ifibss->channel_type);
+	chandef = ifibss->chandef;
 	if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
 		chandef.width = NL80211_CHAN_WIDTH_20;
 		chandef.center_freq1 = chan->center_freq;
@@ -176,6 +176,8 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	/* add HT capability and information IEs */
 	if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
+	    chandef.width != NL80211_CHAN_WIDTH_5 &&
+	    chandef.width != NL80211_CHAN_WIDTH_10 &&
 	    sband->ht_cap.ht_supported) {
 		pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
 						sband->ht_cap.cap);
@@ -298,8 +300,7 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 				  tsf, false);
 }
 
-static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
-						  bool auth)
+static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta)
 	__acquires(RCU)
 {
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -321,20 +322,12 @@ static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
 	/* If it fails, maybe we raced another insertion? */
 	if (sta_info_insert_rcu(sta))
 		return sta_info_get(sdata, addr);
-	if (auth && !sdata->u.ibss.auth_frame_registrations) {
-		ibss_dbg(sdata,
-			 "TX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=1)\n",
-			 sdata->vif.addr, addr, sdata->u.ibss.bssid);
-		ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, 0, NULL, 0,
-				    addr, sdata->u.ibss.bssid, NULL, 0, 0, 0);
-	}
 	return sta;
 }
 
 static struct sta_info *
-ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
-		       const u8 *bssid, const u8 *addr,
-		       u32 supp_rates, bool auth)
+ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid,
+		       const u8 *addr, u32 supp_rates)
 	__acquires(RCU)
 {
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
@@ -385,7 +378,7 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 	sta->sta.supp_rates[band] = supp_rates |
 			ieee80211_mandatory_rates(sband);
 
-	return ieee80211_ibss_finish_sta(sta, auth);
+	return ieee80211_ibss_finish_sta(sta);
 }
 
 static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata,
@@ -407,8 +400,6 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
 					size_t len)
 {
 	u16 auth_alg, auth_transaction;
-	struct sta_info *sta;
-	u8 deauth_frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
 	sdata_assert_lock(sdata);
 
@@ -425,22 +416,6 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
 	if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
 		return;
 
-	sta_info_destroy_addr(sdata, mgmt->sa);
-	sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 0, false);
-	rcu_read_unlock();
-
-	/*
-	 * if we have any problem in allocating the new station, we reply with a
-	 * DEAUTH frame to tell the other end that we had a problem
-	 */
-	if (!sta) {
-		ieee80211_send_deauth_disassoc(sdata, sdata->u.ibss.bssid,
-					       IEEE80211_STYPE_DEAUTH,
-					       WLAN_REASON_UNSPECIFIED, true,
-					       deauth_frame_buf);
-		return;
-	}
-
 	/*
 	 * IEEE 802.11 standard does not require authentication in IBSS
 	 * networks and most implementations do not seem to use it.
@@ -506,7 +481,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 			} else {
 				rcu_read_unlock();
 				sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid,
-						mgmt->sa, supp_rates, true);
+						mgmt->sa, supp_rates);
 			}
 		}
 
@@ -514,7 +489,9 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 			set_sta_flag(sta, WLAN_STA_WME);
 
 		if (sta && elems->ht_operation && elems->ht_cap_elem &&
-		    sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) {
+		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
+		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 &&
+		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) {
 			/* we both use HT */
 			struct ieee80211_ht_cap htcap_ie;
 			struct cfg80211_chan_def chandef;
@@ -529,8 +506,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 			 * fall back to HT20 if we don't use or use
 			 * the other extension channel
 			 */
-			if (cfg80211_get_chandef_type(&chandef) !=
-						sdata->u.ibss.channel_type)
+			if (chandef.center_freq1 !=
+			    sdata->u.ibss.chandef.center_freq1)
 				htcap_ie.cap_info &=
 					cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 
@@ -569,7 +546,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 
 	/* different channel */
 	if (sdata->u.ibss.fixed_channel &&
-	    sdata->u.ibss.channel != cbss->channel)
+	    sdata->u.ibss.chandef.chan != cbss->channel)
 		goto put_bss;
 
 	/* different SSID */
@@ -610,7 +587,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		ieee80211_sta_join_ibss(sdata, bss);
 		supp_rates = ieee80211_sta_get_rates(local, elems, band, NULL);
 		ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa,
-				       supp_rates, true);
+				       supp_rates);
 		rcu_read_unlock();
 	}
 
@@ -759,7 +736,7 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
 		sdata->drop_unencrypted = 0;
 
 	__ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int,
-				  ifibss->channel, ifibss->basic_rates,
+				  ifibss->chandef.chan, ifibss->basic_rates,
 				  capability, 0, true);
 }
 
@@ -791,7 +768,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 	if (ifibss->fixed_bssid)
 		bssid = ifibss->bssid;
 	if (ifibss->fixed_channel)
-		chan = ifibss->channel;
+		chan = ifibss->chandef.chan;
 	if (!is_zero_ether_addr(ifibss->bssid))
 		bssid = ifibss->bssid;
 	cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid,
@@ -982,7 +959,7 @@ void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata)
 		list_del(&sta->list);
 		spin_unlock_bh(&ifibss->incomplete_lock);
 
-		ieee80211_ibss_finish_sta(sta, true);
+		ieee80211_ibss_finish_sta(sta);
 		rcu_read_unlock();
 		spin_lock_bh(&ifibss->incomplete_lock);
 	}
@@ -1058,9 +1035,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 
 	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 
-	sdata->u.ibss.channel = params->chandef.chan;
-	sdata->u.ibss.channel_type =
-		cfg80211_get_chandef_type(&params->chandef);
+	sdata->u.ibss.chandef = params->chandef;
 	sdata->u.ibss.fixed_channel = params->channel_fixed;
 
 	if (params->ie) {
@@ -1119,7 +1094,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 		if (ifibss->privacy)
 			capability |= WLAN_CAPABILITY_PRIVACY;
 
-		cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel,
+		cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan,
 					ifibss->bssid, ifibss->ssid,
 					ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
 					WLAN_CAPABILITY_PRIVACY,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index f97cd9d..8412a30 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -94,6 +94,7 @@ struct ieee80211_bss {
 #define IEEE80211_MAX_SUPP_RATES 32
 	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 	size_t supp_rates_len;
+	struct ieee80211_rate *beacon_rate;
 
 	/*
 	 * During association, we save an ERP value from a probe response so
@@ -497,14 +498,12 @@ struct ieee80211_if_ibss {
 	bool privacy;
 
 	bool control_port;
-	unsigned int auth_frame_registrations;
 
 	u8 bssid[ETH_ALEN] __aligned(2);
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
 	u8 ssid_len, ie_len;
 	u8 *ie;
-	struct ieee80211_channel *channel;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def chandef;
 
 	unsigned long ibss_join_req;
 	/* probe response/beacon for IBSS */
@@ -543,6 +542,7 @@ struct ieee80211_if_mesh {
 	struct timer_list mesh_path_root_timer;
 
 	unsigned long wrkq_flags;
+	unsigned long mbss_changed;
 
 	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
 	size_t mesh_id_len;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 6c33af4..447f41b 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -161,11 +161,8 @@ void mesh_sta_cleanup(struct sta_info *sta)
 		del_timer_sync(&sta->plink_timer);
 	}
 
-	if (changed) {
-		sdata_lock(sdata);
+	if (changed)
 		ieee80211_mbss_info_change_notify(sdata, changed);
-		sdata_unlock(sdata);
-	}
 }
 
 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
@@ -419,7 +416,9 @@ int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
 
 	sband = local->hw.wiphy->bands[band];
 	if (!sband->ht_cap.ht_supported ||
-	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
+	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
+	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
+	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
 		return 0;
 
 	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
@@ -719,14 +718,18 @@ ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata)
 void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 				       u32 changed)
 {
-	if (sdata->vif.bss_conf.enable_beacon &&
-	    (changed & (BSS_CHANGED_BEACON |
-			BSS_CHANGED_HT |
-			BSS_CHANGED_BASIC_RATES |
-			BSS_CHANGED_BEACON_INT)))
-		if (ieee80211_mesh_rebuild_beacon(sdata))
-			return;
-	ieee80211_bss_info_change_notify(sdata, changed);
+	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+	unsigned long bits = changed;
+	u32 bit;
+
+	if (!bits)
+		return;
+
+	/* if we race with running work, worst case this work becomes a noop */
+	for_each_set_bit(bit, &bits, sizeof(changed) * BITS_PER_BYTE)
+		set_bit(bit, &ifmsh->mbss_changed);
+	set_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags);
+	ieee80211_queue_work(&sdata->local->hw, &sdata->work);
 }
 
 int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
@@ -799,6 +802,10 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
 	del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
 	del_timer_sync(&sdata->u.mesh.mesh_path_timer);
 
+	/* clear any mesh work (for next join) we may have accrued */
+	ifmsh->wrkq_flags = 0;
+	ifmsh->mbss_changed = 0;
+
 	local->fif_other_bss--;
 	atomic_dec(&local->iff_allmultis);
 	ieee80211_configure_filter(local);
@@ -965,6 +972,28 @@ out:
 	sdata_unlock(sdata);
 }
 
+static void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+	u32 bit, changed = 0;
+
+	for_each_set_bit(bit, &ifmsh->mbss_changed,
+			 sizeof(changed) * BITS_PER_BYTE) {
+		clear_bit(bit, &ifmsh->mbss_changed);
+		changed |= BIT(bit);
+	}
+
+	if (sdata->vif.bss_conf.enable_beacon &&
+	    (changed & (BSS_CHANGED_BEACON |
+			BSS_CHANGED_HT |
+			BSS_CHANGED_BASIC_RATES |
+			BSS_CHANGED_BEACON_INT)))
+		if (ieee80211_mesh_rebuild_beacon(sdata))
+			return;
+
+	ieee80211_bss_info_change_notify(sdata, changed);
+}
+
 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
@@ -995,6 +1024,8 @@ void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
 	if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
 		mesh_sync_adjust_tbtt(sdata);
 
+	if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags))
+		mesh_bss_info_changed(sdata);
 out:
 	sdata_unlock(sdata);
 }
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 01a28bc..2bc7fd2f 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -58,6 +58,7 @@ enum mesh_path_flags {
  * @MESH_WORK_ROOT: the mesh root station needs to send a frame
  * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
  * mesh nodes
+ * @MESH_WORK_MBSS_CHANGED: rebuild beacon and notify driver of BSS changes
  */
 enum mesh_deferred_task_flags {
 	MESH_WORK_HOUSEKEEPING,
@@ -65,6 +66,7 @@ enum mesh_deferred_task_flags {
 	MESH_WORK_GROW_MPP_TABLE,
 	MESH_WORK_ROOT,
 	MESH_WORK_DRIFT_ADJUST,
+	MESH_WORK_MBSS_CHANGED,
 };
 
 /**
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 09bebed..02c05fa 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -154,8 +154,14 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
 	u16 ht_opmode;
 	bool non_ht_sta = false, ht20_sta = false;
 
-	if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
+	switch (sdata->vif.bss_conf.chandef.width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
 		return 0;
+	default:
+		break;
+	}
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(sta, &local->sta_list, list) {
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 9e49f55..ae31968 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -190,6 +190,12 @@ static u32 chandef_downgrade(struct cfg80211_chan_def *c)
 		c->width = NL80211_CHAN_WIDTH_20_NOHT;
 		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
 		break;
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
+		WARN_ON_ONCE(1);
+		/* keep c->width */
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+		break;
 	}
 
 	WARN_ON_ONCE(!cfg80211_chandef_valid(c));
@@ -1779,8 +1785,10 @@ 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_conf->beacon_rate = bss->beacon_rate;
 		bss_info_changed |= BSS_CHANGED_BEACON_INFO;
 	} else {
+		bss_conf->beacon_rate = NULL;
 		bss_conf->dtim_period = 0;
 	}
 
@@ -1903,6 +1911,8 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	del_timer_sync(&sdata->u.mgd.chswitch_timer);
 
 	sdata->vif.bss_conf.dtim_period = 0;
+	sdata->vif.bss_conf.beacon_rate = NULL;
+
 	ifmgd->have_beacon = false;
 
 	ifmgd->flags = 0;
@@ -2785,8 +2795,7 @@ static void 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(sdata->local->hw.wiphy, bss);
-			cfg80211_assoc_timeout(sdata->dev, mgmt->bssid);
+			cfg80211_assoc_timeout(sdata->dev, bss);
 			return;
 		}
 		sdata_info(sdata, "associated\n");
@@ -2827,8 +2836,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 
 	bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
 					channel);
-	if (bss)
+	if (bss) {
 		ieee80211_rx_bss_put(local, bss);
+		sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
+	}
 
 	if (!sdata->u.mgd.associated ||
 	    !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid))
@@ -3501,13 +3512,10 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 	    time_after(jiffies, ifmgd->assoc_data->timeout)) {
 		if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
 		    ieee80211_do_assoc(sdata)) {
-			u8 bssid[ETH_ALEN];
-
-			memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN);
+			struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
 
 			ieee80211_destroy_assoc_data(sdata, false);
-
-			cfg80211_assoc_timeout(sdata->dev, bssid);
+			cfg80211_assoc_timeout(sdata->dev, bss);
 		}
 	} else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
 		run_again(sdata, ifmgd->assoc_data->timeout);
@@ -3838,6 +3846,12 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 	 */
 	ret = ieee80211_vif_use_channel(sdata, &chandef,
 					IEEE80211_CHANCTX_SHARED);
+
+	/* don't downgrade for 5 and 10 MHz channels, though. */
+	if (chandef.width == NL80211_CHAN_WIDTH_5 ||
+	    chandef.width == NL80211_CHAN_WIDTH_10)
+		return ret;
+
 	while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
 		ifmgd->flags |= chandef_downgrade(&chandef);
 		ret = ieee80211_vif_use_channel(sdata, &chandef,
@@ -4427,8 +4441,11 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
 	cancel_work_sync(&ifmgd->chswitch_work);
 
 	sdata_lock(sdata);
-	if (ifmgd->assoc_data)
+	if (ifmgd->assoc_data) {
+		struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
 		ieee80211_destroy_assoc_data(sdata, false);
+		cfg80211_assoc_timeout(sdata->dev, bss);
+	}
 	if (ifmgd->auth_data)
 		ieee80211_destroy_auth_data(sdata, false);
 	del_timer_sync(&ifmgd->timer);
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index a02bef3..30d58d2 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -397,8 +397,14 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
 			return;
 
 		/* if HT BSS, and we handle a data frame, also try HT rates */
-		if (chan_width == NL80211_CHAN_WIDTH_20_NOHT)
+		switch (chan_width) {
+		case NL80211_CHAN_WIDTH_20_NOHT:
+		case NL80211_CHAN_WIDTH_5:
+		case NL80211_CHAN_WIDTH_10:
 			return;
+		default:
+			break;
+		}
 
 		alt_rate.idx = 0;
 		/* keep protection flags */
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 99b10392..1b122a7 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -140,6 +140,15 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 			bss->valid_data |= IEEE80211_BSS_VALID_WMM;
 	}
 
+	if (beacon) {
+		struct ieee80211_supported_band *sband =
+			local->hw.wiphy->bands[rx_status->band];
+		if (!(rx_status->flag & RX_FLAG_HT) &&
+		    !(rx_status->flag & RX_FLAG_VHT))
+			bss->beacon_rate =
+				&sband->bitrates[rx_status->rate_idx];
+	}
+
 	return bss;
 }
 
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index b429798..aeb967a 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -149,6 +149,7 @@ static void cleanup_single_sta(struct sta_info *sta)
 	 * directly by station destruction.
 	 */
 	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
+		kfree(sta->ampdu_mlme.tid_start_tx[i]);
 		tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]);
 		if (!tid_tx)
 			continue;
@@ -346,6 +347,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 	if (ieee80211_vif_is_mesh(&sdata->vif) &&
 	    !sdata->u.mesh.user_mpm)
 		init_timer(&sta->plink_timer);
+	sta->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
 #endif
 
 	memcpy(sta->sta.addr, addr, ETH_ALEN);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index bd12fc5..4208dbd 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -203,6 +203,7 @@ struct tid_ampdu_rx {
  *	driver requested to close until the work for it runs
  * @mtx: mutex to protect all TX data (except non-NULL assignments
  *	to tid_tx[idx], which are protected by the sta spinlock)
+ *	tid_start_tx is also protected by sta->lock.
  */
 struct sta_ampdu_mlme {
 	struct mutex mtx;
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 171344d..97c2894 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -396,7 +396,7 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 	new_bw = ieee80211_sta_cur_vht_bw(sta);
 	if (new_bw != sta->sta.bandwidth) {
 		sta->sta.bandwidth = new_bw;
-		changed |= IEEE80211_RC_NSS_CHANGED;
+		changed |= IEEE80211_RC_BW_CHANGED;
 	}
 
  change:
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index fd556ac..50f6195 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -54,6 +54,8 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 	control_freq = chandef->chan->center_freq;
 
 	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
 	case NL80211_CHAN_WIDTH_20:
 	case NL80211_CHAN_WIDTH_20_NOHT:
 		if (chandef->center_freq1 != control_freq)
@@ -152,6 +154,12 @@ static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
 	int width;
 
 	switch (c->width) {
+	case NL80211_CHAN_WIDTH_5:
+		width = 5;
+		break;
+	case NL80211_CHAN_WIDTH_10:
+		width = 10;
+		break;
 	case NL80211_CHAN_WIDTH_20:
 	case NL80211_CHAN_WIDTH_20_NOHT:
 		width = 20;
@@ -194,6 +202,16 @@ cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
 	if (c1->width == c2->width)
 		return NULL;
 
+	/*
+	 * can't be compatible if one of them is 5 or 10 MHz,
+	 * but they don't have the same width.
+	 */
+	if (c1->width == NL80211_CHAN_WIDTH_5 ||
+	    c1->width == NL80211_CHAN_WIDTH_10 ||
+	    c2->width == NL80211_CHAN_WIDTH_5 ||
+	    c2->width == NL80211_CHAN_WIDTH_10)
+		return NULL;
+
 	if (c1->width == NL80211_CHAN_WIDTH_20_NOHT ||
 	    c1->width == NL80211_CHAN_WIDTH_20)
 		return c2;
@@ -264,11 +282,17 @@ static int cfg80211_get_chans_dfs_required(struct wiphy *wiphy,
 					    u32 bandwidth)
 {
 	struct ieee80211_channel *c;
-	u32 freq;
+	u32 freq, start_freq, end_freq;
+
+	if (bandwidth <= 20) {
+		start_freq = center_freq;
+		end_freq = center_freq;
+	} else {
+		start_freq = center_freq - bandwidth/2 + 10;
+		end_freq = center_freq + bandwidth/2 - 10;
+	}
 
-	for (freq = center_freq - bandwidth/2 + 10;
-	     freq <= center_freq + bandwidth/2 - 10;
-	     freq += 20) {
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
 		c = ieee80211_get_channel(wiphy, freq);
 		if (!c)
 			return -EINVAL;
@@ -310,11 +334,17 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
 					u32 prohibited_flags)
 {
 	struct ieee80211_channel *c;
-	u32 freq;
+	u32 freq, start_freq, end_freq;
+
+	if (bandwidth <= 20) {
+		start_freq = center_freq;
+		end_freq = center_freq;
+	} else {
+		start_freq = center_freq - bandwidth/2 + 10;
+		end_freq = center_freq + bandwidth/2 - 10;
+	}
 
-	for (freq = center_freq - bandwidth/2 + 10;
-	     freq <= center_freq + bandwidth/2 - 10;
-	     freq += 20) {
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
 		c = ieee80211_get_channel(wiphy, freq);
 		if (!c)
 			return false;
@@ -349,6 +379,12 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
 	control_freq = chandef->chan->center_freq;
 
 	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		width = 5;
+		break;
+	case NL80211_CHAN_WIDTH_10:
+		width = 10;
+		break;
 	case NL80211_CHAN_WIDTH_20:
 		if (!ht_cap->ht_supported)
 			return false;
@@ -405,6 +441,11 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
 	if (width > 20)
 		prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
 
+	/* 5 and 10 MHz are only defined for the OFDM PHY */
+	if (width < 20)
+		prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
+
+
 	if (!cfg80211_secondary_chans_ok(wiphy, chandef->center_freq1,
 					 width, prohibited_flags))
 		return false;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index f277246..4f9f216 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -933,6 +933,12 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
 		 * freed.
 		 */
 		cfg80211_process_wdev_events(wdev);
+
+		if (WARN_ON(wdev->current_bss)) {
+			cfg80211_unhold_bss(wdev->current_bss);
+			cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+			wdev->current_bss = NULL;
+		}
 		break;
 	case NETDEV_PRE_UP:
 		if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index a61a44b..bfac5e1 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -38,6 +38,7 @@ void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
 	 * frame instead of reassoc.
 	 */
 	if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) {
+		cfg80211_unhold_bss(bss_from_pub(bss));
 		cfg80211_put_bss(wiphy, bss);
 		return;
 	}
@@ -131,16 +132,19 @@ void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
 }
 EXPORT_SYMBOL(cfg80211_auth_timeout);
 
-void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr)
+void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct wiphy *wiphy = wdev->wiphy;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 
-	trace_cfg80211_send_assoc_timeout(dev, addr);
+	trace_cfg80211_send_assoc_timeout(dev, bss->bssid);
 
-	nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
+	nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL);
 	cfg80211_sme_assoc_timeout(wdev);
+
+	cfg80211_unhold_bss(bss_from_pub(bss));
+	cfg80211_put_bss(wiphy, bss);
 }
 EXPORT_SYMBOL(cfg80211_assoc_timeout);
 
@@ -307,6 +311,8 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 		goto out;
 
 	err = rdev_assoc(rdev, dev, req);
+	if (!err)
+		cfg80211_hold_bss(bss_from_pub(req->bss));
 
 out:
 	if (err)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e545023..1cc47ac 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1111,10 +1111,16 @@ nl80211_send_mgmt_stypes(struct sk_buff *msg,
 	return 0;
 }
 
+struct nl80211_dump_wiphy_state {
+	s64 filter_wiphy;
+	long start;
+	long split_start, band_start, chan_start;
+	bool split;
+};
+
 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 			      struct sk_buff *msg, u32 portid, u32 seq,
-			      int flags, bool split, long *split_start,
-			      long *band_start, long *chan_start)
+			      int flags, struct nl80211_dump_wiphy_state *state)
 {
 	void *hdr;
 	struct nlattr *nl_bands, *nl_band;
@@ -1125,19 +1131,14 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 	int i;
 	const struct ieee80211_txrx_stypes *mgmt_stypes =
 				dev->wiphy.mgmt_stypes;
-	long start = 0, start_chan = 0, start_band = 0;
 	u32 features;
 
 	hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
 	if (!hdr)
 		return -ENOBUFS;
 
-	/* allow always using the variables */
-	if (!split) {
-		split_start = &start;
-		band_start = &start_band;
-		chan_start = &start_chan;
-	}
+	if (WARN_ON(!state))
+		return -EINVAL;
 
 	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
 	    nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
@@ -1146,7 +1147,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 			cfg80211_rdev_list_generation))
 		goto nla_put_failure;
 
-	switch (*split_start) {
+	switch (state->split_start) {
 	case 0:
 		if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 			       dev->wiphy.retry_short) ||
@@ -1188,9 +1189,12 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
 		    nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
 			goto nla_put_failure;
+		if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
+		    nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
+			goto nla_put_failure;
 
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 1:
 		if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
@@ -1234,22 +1238,23 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 			}
 		}
 
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 2:
 		if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 					dev->wiphy.interface_modes))
 				goto nla_put_failure;
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 3:
 		nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 		if (!nl_bands)
 			goto nla_put_failure;
 
-		for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
+		for (band = state->band_start;
+		     band < IEEE80211_NUM_BANDS; band++) {
 			struct ieee80211_supported_band *sband;
 
 			sband = dev->wiphy.bands[band];
@@ -1261,12 +1266,12 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 			if (!nl_band)
 				goto nla_put_failure;
 
-			switch (*chan_start) {
+			switch (state->chan_start) {
 			case 0:
 				if (nl80211_send_band_rateinfo(msg, sband))
 					goto nla_put_failure;
-				(*chan_start)++;
-				if (split)
+				state->chan_start++;
+				if (state->split)
 					break;
 			default:
 				/* add frequencies */
@@ -1275,7 +1280,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 				if (!nl_freqs)
 					goto nla_put_failure;
 
-				for (i = *chan_start - 1;
+				for (i = state->chan_start - 1;
 				     i < sband->n_channels;
 				     i++) {
 					nl_freq = nla_nest_start(msg, i);
@@ -1284,26 +1289,27 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 
 					chan = &sband->channels[i];
 
-					if (nl80211_msg_put_channel(msg, chan,
-								    split))
+					if (nl80211_msg_put_channel(
+							msg, chan,
+							state->split))
 						goto nla_put_failure;
 
 					nla_nest_end(msg, nl_freq);
-					if (split)
+					if (state->split)
 						break;
 				}
 				if (i < sband->n_channels)
-					*chan_start = i + 2;
+					state->chan_start = i + 2;
 				else
-					*chan_start = 0;
+					state->chan_start = 0;
 				nla_nest_end(msg, nl_freqs);
 			}
 
 			nla_nest_end(msg, nl_band);
 
-			if (split) {
+			if (state->split) {
 				/* start again here */
-				if (*chan_start)
+				if (state->chan_start)
 					band--;
 				break;
 			}
@@ -1311,14 +1317,14 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		nla_nest_end(msg, nl_bands);
 
 		if (band < IEEE80211_NUM_BANDS)
-			*band_start = band + 1;
+			state->band_start = band + 1;
 		else
-			*band_start = 0;
+			state->band_start = 0;
 
 		/* if bands & channels are done, continue outside */
-		if (*band_start == 0 && *chan_start == 0)
-			(*split_start)++;
-		if (split)
+		if (state->band_start == 0 && state->chan_start == 0)
+			state->split_start++;
+		if (state->split)
 			break;
 	case 4:
 		nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
@@ -1384,7 +1390,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		}
 		CMD(start_p2p_device, START_P2P_DEVICE);
 		CMD(set_mcast_rate, SET_MCAST_RATE);
-		if (split) {
+		if (state->split) {
 			CMD(crit_proto_start, CRIT_PROTOCOL_START);
 			CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
 		}
@@ -1408,8 +1414,8 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		}
 
 		nla_nest_end(msg, nl_cmds);
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 5:
 		if (dev->ops->remain_on_channel &&
@@ -1425,29 +1431,30 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 
 		if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
 			goto nla_put_failure;
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 6:
 #ifdef CONFIG_PM
-		if (nl80211_send_wowlan(msg, dev, split))
+		if (nl80211_send_wowlan(msg, dev, state->split))
 			goto nla_put_failure;
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 #else
-		(*split_start)++;
+		state->split_start++;
 #endif
 	case 7:
 		if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
 					dev->wiphy.software_iftypes))
 			goto nla_put_failure;
 
-		if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
+		if (nl80211_put_iface_combinations(&dev->wiphy, msg,
+						   state->split))
 			goto nla_put_failure;
 
-		(*split_start)++;
-		if (split)
+		state->split_start++;
+		if (state->split)
 			break;
 	case 8:
 		if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
@@ -1461,7 +1468,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		 * dump is split, otherwise it makes it too big. Therefore
 		 * only advertise it in that case.
 		 */
-		if (split)
+		if (state->split)
 			features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
 		if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
 			goto nla_put_failure;
@@ -1488,7 +1495,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 		 * case we'll continue with more data in the next round,
 		 * but break unconditionally so unsplit data stops here.
 		 */
-		(*split_start)++;
+		state->split_start++;
 		break;
 	case 9:
 		if (dev->wiphy.extended_capabilities &&
@@ -1507,7 +1514,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 			goto nla_put_failure;
 
 		/* done */
-		*split_start = 0;
+		state->split_start = 0;
 		break;
 	}
 	return genlmsg_end(msg, hdr);
@@ -1517,67 +1524,78 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 	return -EMSGSIZE;
 }
 
+static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
+				    struct netlink_callback *cb,
+				    struct nl80211_dump_wiphy_state *state)
+{
+	struct nlattr **tb = nl80211_fam.attrbuf;
+	int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+			      tb, nl80211_fam.maxattr, nl80211_policy);
+	/* ignore parse errors for backward compatibility */
+	if (ret)
+		return 0;
+
+	state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
+	if (tb[NL80211_ATTR_WIPHY])
+		state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
+	if (tb[NL80211_ATTR_WDEV])
+		state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
+	if (tb[NL80211_ATTR_IFINDEX]) {
+		struct net_device *netdev;
+		struct cfg80211_registered_device *rdev;
+		int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
+
+		netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
+		if (!netdev)
+			return -ENODEV;
+		if (netdev->ieee80211_ptr) {
+			rdev = wiphy_to_dev(
+				netdev->ieee80211_ptr->wiphy);
+			state->filter_wiphy = rdev->wiphy_idx;
+		}
+		dev_put(netdev);
+	}
+
+	return 0;
+}
+
 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 {
 	int idx = 0, ret;
-	int start = cb->args[0];
+	struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
 	struct cfg80211_registered_device *dev;
-	s64 filter_wiphy = -1;
-	bool split = false;
-	struct nlattr **tb;
-	int res;
-
-	/* will be zeroed in nlmsg_parse() */
-	tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
-	if (!tb)
-		return -ENOMEM;
 
 	rtnl_lock();
-
-	res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
-			  tb, NL80211_ATTR_MAX, nl80211_policy);
-	if (res == 0) {
-		split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
-		if (tb[NL80211_ATTR_WIPHY])
-			filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
-		if (tb[NL80211_ATTR_WDEV])
-			filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
-		if (tb[NL80211_ATTR_IFINDEX]) {
-			struct net_device *netdev;
-			int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
-
-			netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
-			if (!netdev) {
-				rtnl_unlock();
-				kfree(tb);
-				return -ENODEV;
-			}
-			if (netdev->ieee80211_ptr) {
-				dev = wiphy_to_dev(
-					netdev->ieee80211_ptr->wiphy);
-				filter_wiphy = dev->wiphy_idx;
-			}
-			dev_put(netdev);
+	if (!state) {
+		state = kzalloc(sizeof(*state), GFP_KERNEL);
+		if (!state) {
+			rtnl_unlock();
+			return -ENOMEM;
 		}
+		state->filter_wiphy = -1;
+		ret = nl80211_dump_wiphy_parse(skb, cb, state);
+		if (ret) {
+			kfree(state);
+			rtnl_unlock();
+			return ret;
+		}
+		cb->args[0] = (long)state;
 	}
-	kfree(tb);
 
 	list_for_each_entry(dev, &cfg80211_rdev_list, list) {
 		if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
 			continue;
-		if (++idx <= start)
+		if (++idx <= state->start)
 			continue;
-		if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
+		if (state->filter_wiphy != -1 &&
+		    state->filter_wiphy != dev->wiphy_idx)
 			continue;
 		/* attempt to fit multiple wiphy data chunks into the skb */
 		do {
 			ret = nl80211_send_wiphy(dev, skb,
 						 NETLINK_CB(cb->skb).portid,
 						 cb->nlh->nlmsg_seq,
-						 NLM_F_MULTI,
-						 split, &cb->args[1],
-						 &cb->args[2],
-						 &cb->args[3]);
+						 NLM_F_MULTI, state);
 			if (ret < 0) {
 				/*
 				 * If sending the wiphy data didn't fit (ENOBUFS
@@ -1602,27 +1620,34 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 				idx--;
 				break;
 			}
-		} while (cb->args[1] > 0);
+		} while (state->split_start > 0);
 		break;
 	}
 	rtnl_unlock();
 
-	cb->args[0] = idx;
+	state->start = idx;
 
 	return skb->len;
 }
 
+static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
+{
+	kfree((void *)cb->args[0]);
+	return 0;
+}
+
 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
 {
 	struct sk_buff *msg;
 	struct cfg80211_registered_device *dev = info->user_ptr[0];
+	struct nl80211_dump_wiphy_state state = {};
 
 	msg = nlmsg_new(4096, GFP_KERNEL);
 	if (!msg)
 		return -ENOMEM;
 
 	if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
-			       false, NULL, NULL, NULL) < 0) {
+			       &state) < 0) {
 		nlmsg_free(msg);
 		return -ENOBUFS;
 	}
@@ -1739,6 +1764,11 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
 				     IEEE80211_CHAN_DISABLED))
 		return -EINVAL;
 
+	if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
+	     chandef->width == NL80211_CHAN_WIDTH_10) &&
+	    !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
+		return -EINVAL;
+
 	return 0;
 }
 
@@ -2890,61 +2920,58 @@ static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
 	return err;
 }
 
-static int nl80211_parse_beacon(struct genl_info *info,
+static int nl80211_parse_beacon(struct nlattr *attrs[],
 				struct cfg80211_beacon_data *bcn)
 {
 	bool haveinfo = false;
 
-	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
-	    !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
-	    !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
-	    !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
+	if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
+	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
+	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
+	    !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
 		return -EINVAL;
 
 	memset(bcn, 0, sizeof(*bcn));
 
-	if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
-		bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
-		bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+	if (attrs[NL80211_ATTR_BEACON_HEAD]) {
+		bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
+		bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
 		if (!bcn->head_len)
 			return -EINVAL;
 		haveinfo = true;
 	}
 
-	if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
-		bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
-		bcn->tail_len =
-		    nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+	if (attrs[NL80211_ATTR_BEACON_TAIL]) {
+		bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
+		bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
 		haveinfo = true;
 	}
 
 	if (!haveinfo)
 		return -EINVAL;
 
-	if (info->attrs[NL80211_ATTR_IE]) {
-		bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
-		bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	if (attrs[NL80211_ATTR_IE]) {
+		bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
+		bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
 	}
 
-	if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
+	if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
 		bcn->proberesp_ies =
-			nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+			nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
 		bcn->proberesp_ies_len =
-			nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+			nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
 	}
 
-	if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
+	if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
 		bcn->assocresp_ies =
-			nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+			nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
 		bcn->assocresp_ies_len =
-			nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+			nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
 	}
 
-	if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
-		bcn->probe_resp =
-			nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
-		bcn->probe_resp_len =
-			nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
+	if (attrs[NL80211_ATTR_PROBE_RESP]) {
+		bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
+		bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
 	}
 
 	return 0;
@@ -3023,7 +3050,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 	    !info->attrs[NL80211_ATTR_BEACON_HEAD])
 		return -EINVAL;
 
-	err = nl80211_parse_beacon(info, &params.beacon);
+	err = nl80211_parse_beacon(info->attrs, &params.beacon);
 	if (err)
 		return err;
 
@@ -3175,7 +3202,7 @@ static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
 	if (!wdev->beacon_interval)
 		return -EINVAL;
 
-	err = nl80211_parse_beacon(info, &params);
+	err = nl80211_parse_beacon(info->attrs, &params);
 	if (err)
 		return err;
 
@@ -6291,11 +6318,16 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
 	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
 		return -EINVAL;
 
-	if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
-		return -EINVAL;
-	if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
-	    !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
+	switch (ibss.chandef.width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		break;
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_40:
+		if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
+			break;
+	default:
 		return -EINVAL;
+	}
 
 	ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
 	ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
@@ -8409,6 +8441,7 @@ static struct genl_ops nl80211_ops[] = {
 		.cmd = NL80211_CMD_GET_WIPHY,
 		.doit = nl80211_get_wiphy,
 		.dumpit = nl80211_dump_wiphy,
+		.done = nl80211_dump_wiphy_done,
 		.policy = nl80211_policy,
 		/* can be retrieved by unprivileged users */
 		.internal_flags = NL80211_FLAG_NEED_WIPHY |
@@ -9029,13 +9062,13 @@ static struct genl_multicast_group nl80211_regulatory_mcgrp = {
 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
 {
 	struct sk_buff *msg;
+	struct nl80211_dump_wiphy_state state = {};
 
 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
 	if (!msg)
 		return;
 
-	if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
-			       false, NULL, NULL, NULL) < 0) {
+	if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
 		nlmsg_free(msg);
 		return;
 	}
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index dd01b58..ae8c186 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -523,6 +523,7 @@ static int cmp_bss(struct cfg80211_bss *a,
 	}
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
 				      struct ieee80211_channel *channel,
 				      const u8 *bssid,
@@ -678,6 +679,7 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev,
 	return true;
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 static struct cfg80211_internal_bss *
 cfg80211_bss_update(struct cfg80211_registered_device *dev,
 		    struct cfg80211_internal_bss *tmp)
@@ -866,6 +868,7 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
 	return channel;
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss*
 cfg80211_inform_bss(struct wiphy *wiphy,
 		    struct ieee80211_channel *channel,
@@ -923,6 +926,7 @@ cfg80211_inform_bss(struct wiphy *wiphy,
 }
 EXPORT_SYMBOL(cfg80211_inform_bss);
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss *
 cfg80211_inform_bss_frame(struct wiphy *wiphy,
 			  struct ieee80211_channel *channel,
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index ae7e2cb..1d3cfb1 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -239,6 +239,7 @@ void cfg80211_conn_work(struct work_struct *work)
 	rtnl_unlock();
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
 {
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -557,6 +558,7 @@ static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
  * SME event handling
  */
 
+/* This method must consume bss one way or another */
 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 			       const u8 *req_ie, size_t req_ie_len,
 			       const u8 *resp_ie, size_t resp_ie_len,
@@ -572,8 +574,10 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 	ASSERT_WDEV_LOCK(wdev);
 
 	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
-		    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
+		    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
+		cfg80211_put_bss(wdev->wiphy, bss);
 		return;
+	}
 
 	nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
 				    bssid, req_ie, req_ie_len,
@@ -615,19 +619,24 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 		kfree(wdev->connect_keys);
 		wdev->connect_keys = NULL;
 		wdev->ssid_len = 0;
-		cfg80211_put_bss(wdev->wiphy, bss);
+		if (bss) {
+			cfg80211_unhold_bss(bss_from_pub(bss));
+			cfg80211_put_bss(wdev->wiphy, bss);
+		}
 		return;
 	}
 
-	if (!bss)
+	if (!bss) {
+		WARN_ON_ONCE(!wiphy_to_dev(wdev->wiphy)->ops->connect);
 		bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
 				       wdev->ssid, wdev->ssid_len,
 				       WLAN_CAPABILITY_ESS,
 				       WLAN_CAPABILITY_ESS);
-	if (WARN_ON(!bss))
-		return;
+		if (WARN_ON(!bss))
+			return;
+		cfg80211_hold_bss(bss_from_pub(bss));
+	}
 
-	cfg80211_hold_bss(bss_from_pub(bss));
 	wdev->current_bss = bss_from_pub(bss);
 
 	cfg80211_upload_connect_keys(wdev);
@@ -691,6 +700,7 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 }
 EXPORT_SYMBOL(cfg80211_connect_result);
 
+/* Consumes bss object one way or another */
 void __cfg80211_roamed(struct wireless_dev *wdev,
 		       struct cfg80211_bss *bss,
 		       const u8 *req_ie, size_t req_ie_len,
@@ -767,6 +777,7 @@ void cfg80211_roamed(struct net_device *dev,
 }
 EXPORT_SYMBOL(cfg80211_roamed);
 
+/* Consumes bss object one way or another */
 void cfg80211_roamed_bss(struct net_device *dev,
 			 struct cfg80211_bss *bss, const u8 *req_ie,
 			 size_t req_ie_len, const u8 *resp_ie,
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 360a42c..a23253e 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -83,6 +83,7 @@ static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
+#ifdef CONFIG_PM
 static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
 {
 	struct wireless_dev *wdev;
@@ -91,7 +92,6 @@ static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
 		cfg80211_leave(rdev, wdev);
 }
 
-#ifdef CONFIG_PM
 static int wiphy_suspend(struct device *dev, pm_message_t state)
 {
 	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);