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

John W. Linville says:

====================
Here is one last(?) big wireless bits pull request before the merge window...

Regarding the mac80211 bits, Johannes says:

"Here's another big pull request for the -next stream. This one has a ton
of driver updates, which hopefully addresses all drivers, but maybe you
have more new drivers than I have in my tree? Not entirely sure, let me
know if this is the case and then I can merge wireless-next.

I'm including a large number of small changes, see the shortlog. The two
bigger things are making VHT compatible with not using channel contexts
(from Karl) and the stop-while-suspended fixes I developed together with
Stanislaw."

...and...

"This time I have a relatively large number of fixes and small
improvements, the most important one being Bob's RCU fix. The two big
things are Felix's work on rate scaling tables (with a big thanks to
Karl too) and my own work on CSA handling to finally properly handle HT
(and some VHT.)"

As for the iwlwifi bits, Johannes says:

"The biggest work here is Bluetooth coexistence and power saving. Other
than that, I have a few small fixes that weren't really needed for 3.9
and a new PCI ID."

About the NFC bits, Samuel says:

"With this one we have:

- A major pn533 update. The pn533 framing support has been changed in order to
  easily support all pn533 derivatives. For example we now support the ACR122
  USB dongle.

- An NFC MEI physical layer code factorization through the mei_phy NFC API.
  Both the microread and the pn544 drivers now use it.

- LLCP aggregation support. This allows NFC p2p devices to send aggregated
  frames containing all sort of LLCP frames except SYMM and aggregation
  frames.

- More LLCP socket options for getting the remote device link parameters.

- Fixes for the LLCP socket option code added with the first pull request for
  3.10.

- Some support for LLCP corner cases like 0 length SDUs and general DISC
  (tagged with a 0,0 dsap ssap couple) handling.

- RFKILL support for NFC."

For the b43 bits, Rafał says:

"Let me remind the changes for b43:
> Changes include:
> 1) Minor improvements for HT-PHY code (BCM4331)
> 2) Code cleaning for HT-PHY and N-PHY"

Concerning the bluetooth bits, Gustavo says:

"A set of changes intended for 3.10. The biggest changes here are from David
Herrmann, he rewrote most of the HIDP layer making it more reliable. Marcel
added a driver setup stage for device that need special handling on their
early initialization. Other than that we have the usual clean ups, bugfixes
and small improvements."

Along with all that, there is the usual collection of random/various
updates to ath9k, mwifiex, brcmfmac, brcmsmac, rt2x00, and wil6210.

I also included a pull of the wireless tree to resolve a merge conflict.

Please let me know if there are problems!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

53 files changed, 2895 insertions, 1645 deletions

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index b9f90169940b..6c7f36379722 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -117,6 +117,16 @@ static void hci_acl_create_connection_cancel(struct hci_conn *conn)
 	hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp);
 }
 
+static void hci_reject_sco(struct hci_conn *conn)
+{
+	struct hci_cp_reject_sync_conn_req cp;
+
+	cp.reason = HCI_ERROR_REMOTE_USER_TERM;
+	bacpy(&cp.bdaddr, &conn->dst);
+
+	hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp);
+}
+
 void hci_disconnect(struct hci_conn *conn, __u8 reason)
 {
 	struct hci_cp_disconnect cp;
@@ -276,6 +286,8 @@ static void hci_conn_timeout(struct work_struct *work)
 				hci_acl_create_connection_cancel(conn);
 			else if (conn->type == LE_LINK)
 				hci_le_create_connection_cancel(conn);
+		} else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) {
+			hci_reject_sco(conn);
 		}
 		break;
 	case BT_CONFIG:
@@ -398,8 +410,6 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
 	if (hdev->notify)
 		hdev->notify(hdev, HCI_NOTIFY_CONN_ADD);
 
-	atomic_set(&conn->devref, 0);
-
 	hci_conn_init_sysfs(conn);
 
 	return conn;
@@ -433,7 +443,7 @@ int hci_conn_del(struct hci_conn *conn)
 		struct hci_conn *acl = conn->link;
 		if (acl) {
 			acl->link = NULL;
-			hci_conn_put(acl);
+			hci_conn_drop(acl);
 		}
 	}
 
@@ -448,12 +458,11 @@ int hci_conn_del(struct hci_conn *conn)
 
 	skb_queue_purge(&conn->data_q);
 
-	hci_conn_put_device(conn);
+	hci_conn_del_sysfs(conn);
 
 	hci_dev_put(hdev);
 
-	if (conn->handle == 0)
-		kfree(conn);
+	hci_conn_put(conn);
 
 	return 0;
 }
@@ -565,7 +574,7 @@ static struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type,
 	if (!sco) {
 		sco = hci_conn_add(hdev, type, dst);
 		if (!sco) {
-			hci_conn_put(acl);
+			hci_conn_drop(acl);
 			return ERR_PTR(-ENOMEM);
 		}
 	}
@@ -835,19 +844,6 @@ void hci_conn_check_pending(struct hci_dev *hdev)
 	hci_dev_unlock(hdev);
 }
 
-void hci_conn_hold_device(struct hci_conn *conn)
-{
-	atomic_inc(&conn->devref);
-}
-EXPORT_SYMBOL(hci_conn_hold_device);
-
-void hci_conn_put_device(struct hci_conn *conn)
-{
-	if (atomic_dec_and_test(&conn->devref))
-		hci_conn_del_sysfs(conn);
-}
-EXPORT_SYMBOL(hci_conn_put_device);
-
 int hci_get_conn_list(void __user *arg)
 {
 	struct hci_conn *c;
@@ -980,7 +976,7 @@ void hci_chan_del(struct hci_chan *chan)
 
 	synchronize_rcu();
 
-	hci_conn_put(conn);
+	hci_conn_drop(conn);
 
 	skb_queue_purge(&chan->data_q);
 	kfree(chan);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index cfcad5423f1c..ce82265f5619 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -79,6 +79,121 @@ static void hci_req_cancel(struct hci_dev *hdev, int err)
 	}
 }
 
+struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 event)
+{
+	struct hci_ev_cmd_complete *ev;
+	struct hci_event_hdr *hdr;
+	struct sk_buff *skb;
+
+	hci_dev_lock(hdev);
+
+	skb = hdev->recv_evt;
+	hdev->recv_evt = NULL;
+
+	hci_dev_unlock(hdev);
+
+	if (!skb)
+		return ERR_PTR(-ENODATA);
+
+	if (skb->len < sizeof(*hdr)) {
+		BT_ERR("Too short HCI event");
+		goto failed;
+	}
+
+	hdr = (void *) skb->data;
+	skb_pull(skb, HCI_EVENT_HDR_SIZE);
+
+	if (event) {
+		if (hdr->evt != event)
+			goto failed;
+		return skb;
+	}
+
+	if (hdr->evt != HCI_EV_CMD_COMPLETE) {
+		BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
+		goto failed;
+	}
+
+	if (skb->len < sizeof(*ev)) {
+		BT_ERR("Too short cmd_complete event");
+		goto failed;
+	}
+
+	ev = (void *) skb->data;
+	skb_pull(skb, sizeof(*ev));
+
+	if (opcode == __le16_to_cpu(ev->opcode))
+		return skb;
+
+	BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
+	       __le16_to_cpu(ev->opcode));
+
+failed:
+	kfree_skb(skb);
+	return ERR_PTR(-ENODATA);
+}
+
+struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
+				  void *param, u8 event, u32 timeout)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	struct hci_request req;
+	int err = 0;
+
+	BT_DBG("%s", hdev->name);
+
+	hci_req_init(&req, hdev);
+
+	hci_req_add_ev(&req, opcode, plen, param, event);
+
+	hdev->req_status = HCI_REQ_PEND;
+
+	err = hci_req_run(&req, hci_req_sync_complete);
+	if (err < 0)
+		return ERR_PTR(err);
+
+	add_wait_queue(&hdev->req_wait_q, &wait);
+	set_current_state(TASK_INTERRUPTIBLE);
+
+	schedule_timeout(timeout);
+
+	remove_wait_queue(&hdev->req_wait_q, &wait);
+
+	if (signal_pending(current))
+		return ERR_PTR(-EINTR);
+
+	switch (hdev->req_status) {
+	case HCI_REQ_DONE:
+		err = -bt_to_errno(hdev->req_result);
+		break;
+
+	case HCI_REQ_CANCELED:
+		err = -hdev->req_result;
+		break;
+
+	default:
+		err = -ETIMEDOUT;
+		break;
+	}
+
+	hdev->req_status = hdev->req_result = 0;
+
+	BT_DBG("%s end: err %d", hdev->name, err);
+
+	if (err < 0)
+		return ERR_PTR(err);
+
+	return hci_get_cmd_complete(hdev, opcode, event);
+}
+EXPORT_SYMBOL(__hci_cmd_sync_ev);
+
+struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
+			       void *param, u32 timeout)
+{
+	return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout);
+}
+EXPORT_SYMBOL(__hci_cmd_sync);
+
 /* Execute request and wait for completion. */
 static int __hci_req_sync(struct hci_dev *hdev,
 			  void (*func)(struct hci_request *req,
@@ -201,29 +316,9 @@ static void amp_init(struct hci_request *req)
 static void hci_init1_req(struct hci_request *req, unsigned long opt)
 {
 	struct hci_dev *hdev = req->hdev;
-	struct hci_request init_req;
-	struct sk_buff *skb;
 
 	BT_DBG("%s %ld", hdev->name, opt);
 
-	/* Driver initialization */
-
-	hci_req_init(&init_req, hdev);
-
-	/* Special commands */
-	while ((skb = skb_dequeue(&hdev->driver_init))) {
-		bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
-		skb->dev = (void *) hdev;
-
-		if (skb_queue_empty(&init_req.cmd_q))
-			bt_cb(skb)->req.start = true;
-
-		skb_queue_tail(&init_req.cmd_q, skb);
-	}
-	skb_queue_purge(&hdev->driver_init);
-
-	hci_req_run(&init_req, NULL);
-
 	/* Reset */
 	if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks))
 		hci_reset_req(req, 0);
@@ -494,6 +589,7 @@ static void hci_set_le_support(struct hci_request *req)
 static void hci_init3_req(struct hci_request *req, unsigned long opt)
 {
 	struct hci_dev *hdev = req->hdev;
+	u8 p;
 
 	if (hdev->commands[5] & 0x10)
 		hci_setup_link_policy(req);
@@ -502,6 +598,15 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
 		hci_set_le_support(req);
 		hci_update_ad(req);
 	}
+
+	/* Read features beyond page 1 if available */
+	for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
+		struct hci_cp_read_local_ext_features cp;
+
+		cp.page = p;
+		hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES,
+			    sizeof(cp), &cp);
+	}
 }
 
 static int __hci_init(struct hci_dev *hdev)
@@ -818,6 +923,12 @@ static void hci_inq_req(struct hci_request *req, unsigned long opt)
 	hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
 }
 
+static int wait_inquiry(void *word)
+{
+	schedule();
+	return signal_pending(current);
+}
+
 int hci_inquiry(void __user *arg)
 {
 	__u8 __user *ptr = arg;
@@ -849,6 +960,13 @@ int hci_inquiry(void __user *arg)
 				   timeo);
 		if (err < 0)
 			goto done;
+
+		/* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is
+		 * cleared). If it is interrupted by a signal, return -EINTR.
+		 */
+		if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry,
+				TASK_INTERRUPTIBLE))
+			return -EINTR;
 	}
 
 	/* for unlimited number of responses we will use buffer with
@@ -999,26 +1117,33 @@ int hci_dev_open(__u16 dev)
 		goto done;
 	}
 
-	if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
-		set_bit(HCI_RAW, &hdev->flags);
-
-	/* Treat all non BR/EDR controllers as raw devices if
-	   enable_hs is not set */
-	if (hdev->dev_type != HCI_BREDR && !enable_hs)
-		set_bit(HCI_RAW, &hdev->flags);
-
 	if (hdev->open(hdev)) {
 		ret = -EIO;
 		goto done;
 	}
 
-	if (!test_bit(HCI_RAW, &hdev->flags)) {
-		atomic_set(&hdev->cmd_cnt, 1);
-		set_bit(HCI_INIT, &hdev->flags);
-		ret = __hci_init(hdev);
-		clear_bit(HCI_INIT, &hdev->flags);
+	atomic_set(&hdev->cmd_cnt, 1);
+	set_bit(HCI_INIT, &hdev->flags);
+
+	if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags))
+		ret = hdev->setup(hdev);
+
+	if (!ret) {
+		/* Treat all non BR/EDR controllers as raw devices if
+		 * enable_hs is not set.
+		 */
+		if (hdev->dev_type != HCI_BREDR && !enable_hs)
+			set_bit(HCI_RAW, &hdev->flags);
+
+		if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
+			set_bit(HCI_RAW, &hdev->flags);
+
+		if (!test_bit(HCI_RAW, &hdev->flags))
+			ret = __hci_init(hdev);
 	}
 
+	clear_bit(HCI_INIT, &hdev->flags);
+
 	if (!ret) {
 		hci_dev_hold(hdev);
 		set_bit(HCI_UP, &hdev->flags);
@@ -1123,6 +1248,9 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 		hdev->sent_cmd = NULL;
 	}
 
+	kfree_skb(hdev->recv_evt);
+	hdev->recv_evt = NULL;
+
 	/* After this point our queues are empty
 	 * and no tasks are scheduled. */
 	hdev->close(hdev);
@@ -1861,8 +1989,8 @@ 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 = 1;
-	cp.filter_dup = 1;
+	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);
 }
@@ -1896,7 +2024,7 @@ static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval,
 		return err;
 
 	queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
-			   msecs_to_jiffies(timeout));
+			   timeout);
 
 	return 0;
 }
@@ -2006,7 +2134,6 @@ struct hci_dev *hci_alloc_dev(void)
 	INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
 	INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work);
 
-	skb_queue_head_init(&hdev->driver_init);
 	skb_queue_head_init(&hdev->rx_q);
 	skb_queue_head_init(&hdev->cmd_q);
 	skb_queue_head_init(&hdev->raw_q);
@@ -2025,8 +2152,6 @@ EXPORT_SYMBOL(hci_alloc_dev);
 /* Free HCI device */
 void hci_free_dev(struct hci_dev *hdev)
 {
-	skb_queue_purge(&hdev->driver_init);
-
 	/* will free via device release */
 	put_device(&hdev->dev);
 }
@@ -2527,7 +2652,8 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
 }
 
 /* Queue a command to an asynchronous HCI request */
-void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, void *param,
+		    u8 event)
 {
 	struct hci_dev *hdev = req->hdev;
 	struct sk_buff *skb;
@@ -2551,9 +2677,16 @@ void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
 	if (skb_queue_empty(&req->cmd_q))
 		bt_cb(skb)->req.start = true;
 
+	bt_cb(skb)->req.event = event;
+
 	skb_queue_tail(&req->cmd_q, skb);
 }
 
+void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+{
+	hci_req_add_ev(req, opcode, plen, param, 0);
+}
+
 /* Get data from the previously sent command */
 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
 {
@@ -3309,32 +3442,6 @@ call_complete:
 		req_complete(hdev, status);
 }
 
-void hci_req_cmd_status(struct hci_dev *hdev, u16 opcode, u8 status)
-{
-	hci_req_complete_t req_complete = NULL;
-
-	BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
-
-	if (status) {
-		hci_req_cmd_complete(hdev, opcode, status);
-		return;
-	}
-
-	/* No need to handle success status if there are more commands */
-	if (!hci_req_is_complete(hdev))
-		return;
-
-	if (hdev->sent_cmd)
-		req_complete = bt_cb(hdev->sent_cmd)->req.complete;
-
-	/* If the request doesn't have a complete callback or there
-	 * are other commands/requests in the hdev queue we consider
-	 * this request as completed.
-	 */
-	if (!req_complete || !skb_queue_empty(&hdev->cmd_q))
-		hci_req_cmd_complete(hdev, opcode, status);
-}
-
 static void hci_rx_work(struct work_struct *work)
 {
 	struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 138580745c2c..b93cd2eb5d58 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -48,13 +48,13 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
 	}
 
 	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_req_cmd_complete(hdev, HCI_OP_INQUIRY, status);
-
 	hci_conn_check_pending(hdev);
 }
 
@@ -433,9 +433,9 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
 
 	if (!status) {
 		if (sent->mode)
-			hdev->host_features[0] |= LMP_HOST_SSP;
+			hdev->features[1][0] |= LMP_HOST_SSP;
 		else
-			hdev->host_features[0] &= ~LMP_HOST_SSP;
+			hdev->features[1][0] &= ~LMP_HOST_SSP;
 	}
 
 	if (test_bit(HCI_MGMT, &hdev->dev_flags))
@@ -493,18 +493,18 @@ static void hci_cc_read_local_features(struct hci_dev *hdev,
 	/* Adjust default settings according to features
 	 * supported by device. */
 
-	if (hdev->features[0] & LMP_3SLOT)
+	if (hdev->features[0][0] & LMP_3SLOT)
 		hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 
-	if (hdev->features[0] & LMP_5SLOT)
+	if (hdev->features[0][0] & LMP_5SLOT)
 		hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 
-	if (hdev->features[1] & LMP_HV2) {
+	if (hdev->features[0][1] & LMP_HV2) {
 		hdev->pkt_type  |= (HCI_HV2);
 		hdev->esco_type |= (ESCO_HV2);
 	}
 
-	if (hdev->features[1] & LMP_HV3) {
+	if (hdev->features[0][1] & LMP_HV3) {
 		hdev->pkt_type  |= (HCI_HV3);
 		hdev->esco_type |= (ESCO_HV3);
 	}
@@ -512,26 +512,26 @@ static void hci_cc_read_local_features(struct hci_dev *hdev,
 	if (lmp_esco_capable(hdev))
 		hdev->esco_type |= (ESCO_EV3);
 
-	if (hdev->features[4] & LMP_EV4)
+	if (hdev->features[0][4] & LMP_EV4)
 		hdev->esco_type |= (ESCO_EV4);
 
-	if (hdev->features[4] & LMP_EV5)
+	if (hdev->features[0][4] & LMP_EV5)
 		hdev->esco_type |= (ESCO_EV5);
 
-	if (hdev->features[5] & LMP_EDR_ESCO_2M)
+	if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 		hdev->esco_type |= (ESCO_2EV3);
 
-	if (hdev->features[5] & LMP_EDR_ESCO_3M)
+	if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 		hdev->esco_type |= (ESCO_3EV3);
 
-	if (hdev->features[5] & LMP_EDR_3S_ESCO)
+	if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 		hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 
 	BT_DBG("%s features 0x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x", hdev->name,
-	       hdev->features[0], hdev->features[1],
-	       hdev->features[2], hdev->features[3],
-	       hdev->features[4], hdev->features[5],
-	       hdev->features[6], hdev->features[7]);
+	       hdev->features[0][0], hdev->features[0][1],
+	       hdev->features[0][2], hdev->features[0][3],
+	       hdev->features[0][4], hdev->features[0][5],
+	       hdev->features[0][6], hdev->features[0][7]);
 }
 
 static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
@@ -544,14 +544,10 @@ static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
 	if (rp->status)
 		return;
 
-	switch (rp->page) {
-	case 0:
-		memcpy(hdev->features, rp->features, 8);
-		break;
-	case 1:
-		memcpy(hdev->host_features, rp->features, 8);
-		break;
-	}
+	hdev->max_page = rp->max_page;
+
+	if (rp->page < HCI_MAX_PAGES)
+		memcpy(hdev->features[rp->page], rp->features, 8);
 }
 
 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
@@ -968,7 +964,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
 		return;
 
 	switch (cp->enable) {
-	case LE_SCANNING_ENABLED:
+	case LE_SCAN_ENABLE:
 		if (status) {
 			hci_dev_lock(hdev);
 			mgmt_start_discovery_failed(hdev, status);
@@ -983,7 +979,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
 		hci_dev_unlock(hdev);
 		break;
 
-	case LE_SCANNING_DISABLED:
+	case LE_SCAN_DISABLE:
 		if (status) {
 			hci_dev_lock(hdev);
 			mgmt_stop_discovery_failed(hdev, status);
@@ -1046,14 +1042,14 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
 
 	if (!status) {
 		if (sent->le)
-			hdev->host_features[0] |= LMP_HOST_LE;
+			hdev->features[1][0] |= LMP_HOST_LE;
 		else
-			hdev->host_features[0] &= ~LMP_HOST_LE;
+			hdev->features[1][0] &= ~LMP_HOST_LE;
 
 		if (sent->simul)
-			hdev->host_features[0] |= LMP_HOST_LE_BREDR;
+			hdev->features[1][0] |= LMP_HOST_LE_BREDR;
 		else
-			hdev->host_features[0] &= ~LMP_HOST_LE_BREDR;
+			hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
 	}
 
 	if (test_bit(HCI_MGMT, &hdev->dev_flags) &&
@@ -1190,7 +1186,7 @@ static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1217,7 +1213,7 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1379,7 +1375,7 @@ static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1406,7 +1402,7 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
 	if (conn) {
 		if (conn->state == BT_CONFIG) {
 			hci_proto_connect_cfm(conn, status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	}
 
@@ -1600,13 +1596,14 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, status);
 
-	hci_req_cmd_complete(hdev, HCI_OP_INQUIRY, status);
-
 	hci_conn_check_pending(hdev);
 
 	if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
 		return;
 
+	smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
+	wake_up_bit(&hdev->flags, HCI_INQUIRY);
+
 	if (!test_bit(HCI_MGMT, &hdev->dev_flags))
 		return;
 
@@ -1705,7 +1702,6 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		} else
 			conn->state = BT_CONNECTED;
 
-		hci_conn_hold_device(conn);
 		hci_conn_add_sysfs(conn);
 
 		if (test_bit(HCI_AUTH, &hdev->flags))
@@ -1752,42 +1748,6 @@ unlock:
 	hci_conn_check_pending(hdev);
 }
 
-void hci_conn_accept(struct hci_conn *conn, int mask)
-{
-	struct hci_dev *hdev = conn->hdev;
-
-	BT_DBG("conn %p", conn);
-
-	conn->state = BT_CONFIG;
-
-	if (!lmp_esco_capable(hdev)) {
-		struct hci_cp_accept_conn_req cp;
-
-		bacpy(&cp.bdaddr, &conn->dst);
-
-		if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
-			cp.role = 0x00; /* Become master */
-		else
-			cp.role = 0x01; /* Remain slave */
-
-		hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
-	} else /* lmp_esco_capable(hdev)) */ {
-		struct hci_cp_accept_sync_conn_req cp;
-
-		bacpy(&cp.bdaddr, &conn->dst);
-		cp.pkt_type = cpu_to_le16(conn->pkt_type);
-
-		cp.tx_bandwidth   = __constant_cpu_to_le32(0x00001f40);
-		cp.rx_bandwidth   = __constant_cpu_to_le32(0x00001f40);
-		cp.max_latency    = __constant_cpu_to_le16(0xffff);
-		cp.content_format = cpu_to_le16(hdev->voice_setting);
-		cp.retrans_effort = 0xff;
-
-		hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
-			     sizeof(cp), &cp);
-	}
-}
-
 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct hci_ev_conn_request *ev = (void *) skb->data;
@@ -1859,7 +1819,6 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		} else {
 			conn->state = BT_CONNECT2;
 			hci_proto_connect_cfm(conn, 0);
-			hci_conn_put(conn);
 		}
 	} else {
 		/* Connection rejected */
@@ -1966,14 +1925,14 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		} else {
 			conn->state = BT_CONNECTED;
 			hci_proto_connect_cfm(conn, ev->status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		}
 	} else {
 		hci_auth_cfm(conn, ev->status);
 
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
@@ -2057,7 +2016,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
 		if (ev->status && conn->state == BT_CONNECTED) {
 			hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 			goto unlock;
 		}
 
@@ -2066,7 +2025,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
 				conn->state = BT_CONNECTED;
 
 			hci_proto_connect_cfm(conn, ev->status);
-			hci_conn_put(conn);
+			hci_conn_drop(conn);
 		} else
 			hci_encrypt_cfm(conn, ev->status, ev->encrypt);
 	}
@@ -2113,7 +2072,7 @@ static void hci_remote_features_evt(struct hci_dev *hdev,
 		goto unlock;
 
 	if (!ev->status)
-		memcpy(conn->features, ev->features, 8);
+		memcpy(conn->features[0], ev->features, 8);
 
 	if (conn->state != BT_CONFIG)
 		goto unlock;
@@ -2141,7 +2100,7 @@ static void hci_remote_features_evt(struct hci_dev *hdev,
 	if (!hci_outgoing_auth_needed(hdev, conn)) {
 		conn->state = BT_CONNECTED;
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -2462,7 +2421,9 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (opcode != HCI_OP_NOP)
 		del_timer(&hdev->cmd_timer);
 
-	hci_req_cmd_status(hdev, opcode, ev->status);
+	if (ev->status ||
+	    (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event))
+		hci_req_cmd_complete(hdev, opcode, ev->status);
 
 	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
 		atomic_set(&hdev->cmd_cnt, 1);
@@ -2679,7 +2640,7 @@ static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (conn->state == BT_CONNECTED) {
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_PAIRING_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (!test_bit(HCI_PAIRABLE, &hdev->dev_flags))
@@ -2782,7 +2743,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		if (ev->key_type != HCI_LK_CHANGED_COMBINATION)
 			conn->key_type = ev->key_type;
 
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 	if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
@@ -2923,6 +2884,9 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev,
 	if (!conn)
 		goto unlock;
 
+	if (ev->page < HCI_MAX_PAGES)
+		memcpy(conn->features[ev->page], ev->features, 8);
+
 	if (!ev->status && ev->page == 0x01) {
 		struct inquiry_entry *ie;
 
@@ -2930,8 +2894,19 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev,
 		if (ie)
 			ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
 
-		if (ev->features[0] & LMP_HOST_SSP)
+		if (ev->features[0] & LMP_HOST_SSP) {
 			set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
+		} else {
+			/* It is mandatory by the Bluetooth specification that
+			 * Extended Inquiry Results are only used when Secure
+			 * Simple Pairing is enabled, but some devices violate
+			 * this.
+			 *
+			 * To make these devices work, the internal SSP
+			 * enabled flag needs to be cleared if the remote host
+			 * features do not indicate SSP support */
+			clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
+		}
 	}
 
 	if (conn->state != BT_CONFIG)
@@ -2951,7 +2926,7 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev,
 	if (!hci_outgoing_auth_needed(hdev, conn)) {
 		conn->state = BT_CONNECTED;
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -2985,7 +2960,6 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
 		conn->handle = __le16_to_cpu(ev->handle);
 		conn->state  = BT_CONNECTED;
 
-		hci_conn_hold_device(conn);
 		hci_conn_add_sysfs(conn);
 		break;
 
@@ -3084,7 +3058,7 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
 
 	if (ev->status && conn->state == BT_CONNECTED) {
 		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 		goto unlock;
 	}
 
@@ -3093,13 +3067,13 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
 			conn->state = BT_CONNECTED;
 
 		hci_proto_connect_cfm(conn, ev->status);
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	} else {
 		hci_auth_cfm(conn, ev->status);
 
 		hci_conn_hold(conn);
 		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 	}
 
 unlock:
@@ -3360,7 +3334,7 @@ static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
 		mgmt_auth_failed(hdev, &conn->dst, conn->type, conn->dst_type,
 				 ev->status);
 
-	hci_conn_put(conn);
+	hci_conn_drop(conn);
 
 unlock:
 	hci_dev_unlock(hdev);
@@ -3371,11 +3345,16 @@ static void hci_remote_host_features_evt(struct hci_dev *hdev,
 {
 	struct hci_ev_remote_host_features *ev = (void *) skb->data;
 	struct inquiry_entry *ie;
+	struct hci_conn *conn;
 
 	BT_DBG("%s", hdev->name);
 
 	hci_dev_lock(hdev);
 
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (conn)
+		memcpy(conn->features[1], ev->features, 8);
+
 	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
 	if (ie)
 		ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
@@ -3448,9 +3427,8 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev,
 
 	hci_conn_hold(hcon);
 	hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
-	hci_conn_put(hcon);
+	hci_conn_drop(hcon);
 
-	hci_conn_hold_device(hcon);
 	hci_conn_add_sysfs(hcon);
 
 	amp_physical_cfm(bredr_hcon, hcon);
@@ -3584,7 +3562,6 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	conn->handle = __le16_to_cpu(ev->handle);
 	conn->state = BT_CONNECTED;
 
-	hci_conn_hold_device(conn);
 	hci_conn_add_sysfs(conn);
 
 	hci_proto_connect_cfm(conn, ev->status);
@@ -3698,8 +3675,27 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	struct hci_event_hdr *hdr = (void *) skb->data;
 	__u8 event = hdr->evt;
 
+	hci_dev_lock(hdev);
+
+	/* Received events are (currently) only needed when a request is
+	 * ongoing so avoid unnecessary memory allocation.
+	 */
+	if (hdev->req_status == HCI_REQ_PEND) {
+		kfree_skb(hdev->recv_evt);
+		hdev->recv_evt = skb_clone(skb, GFP_KERNEL);
+	}
+
+	hci_dev_unlock(hdev);
+
 	skb_pull(skb, HCI_EVENT_HDR_SIZE);
 
+	if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
+		struct hci_command_hdr *hdr = (void *) hdev->sent_cmd->data;
+		u16 opcode = __le16_to_cpu(hdr->opcode);
+
+		hci_req_cmd_complete(hdev, opcode, 0);
+	}
+
 	switch (event) {
 	case HCI_EV_INQUIRY_COMPLETE:
 		hci_inquiry_complete_evt(hdev, skb);
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index ff38561385de..7ad6ecf36f20 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -48,10 +48,10 @@ static ssize_t show_link_features(struct device *dev,
 	struct hci_conn *conn = to_hci_conn(dev);
 
 	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
-		       conn->features[0], conn->features[1],
-		       conn->features[2], conn->features[3],
-		       conn->features[4], conn->features[5],
-		       conn->features[6], conn->features[7]);
+		       conn->features[0][0], conn->features[0][1],
+		       conn->features[0][2], conn->features[0][3],
+		       conn->features[0][4], conn->features[0][5],
+		       conn->features[0][6], conn->features[0][7]);
 }
 
 #define LINK_ATTR(_name, _mode, _show, _store) \
@@ -146,7 +146,6 @@ void hci_conn_del_sysfs(struct hci_conn *conn)
 	}
 
 	device_del(&conn->dev);
-	put_device(&conn->dev);
 
 	hci_dev_put(hdev);
 }
@@ -234,10 +233,10 @@ static ssize_t show_features(struct device *dev,
 	struct hci_dev *hdev = to_hci_dev(dev);
 
 	return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
-		       hdev->features[0], hdev->features[1],
-		       hdev->features[2], hdev->features[3],
-		       hdev->features[4], hdev->features[5],
-		       hdev->features[6], hdev->features[7]);
+		       hdev->features[0][0], hdev->features[0][1],
+		       hdev->features[0][2], hdev->features[0][3],
+		       hdev->features[0][4], hdev->features[0][5],
+		       hdev->features[0][6], hdev->features[0][7]);
 }
 
 static ssize_t show_manufacturer(struct device *dev,
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 2342327f3335..940f5acb6694 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -1,6 +1,7 @@
 /*
    HIDP implementation for Linux Bluetooth stack (BlueZ).
    Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>
+   Copyright (C) 2013 David Herrmann <dh.herrmann@gmail.com>
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 2 as
@@ -20,6 +21,7 @@
    SOFTWARE IS DISCLAIMED.
 */
 
+#include <linux/kref.h>
 #include <linux/module.h>
 #include <linux/file.h>
 #include <linux/kthread.h>
@@ -59,39 +61,20 @@ static unsigned char hidp_keycode[256] = {
 
 static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 };
 
-static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr)
-{
-	struct hidp_session *session;
-
-	BT_DBG("");
+static int hidp_session_probe(struct l2cap_conn *conn,
+			      struct l2cap_user *user);
+static void hidp_session_remove(struct l2cap_conn *conn,
+				struct l2cap_user *user);
+static int hidp_session_thread(void *arg);
+static void hidp_session_terminate(struct hidp_session *s);
 
-	list_for_each_entry(session, &hidp_session_list, list) {
-		if (!bacmp(bdaddr, &session->bdaddr))
-			return session;
-	}
-
-	return NULL;
-}
-
-static void __hidp_link_session(struct hidp_session *session)
-{
-	list_add(&session->list, &hidp_session_list);
-}
-
-static void __hidp_unlink_session(struct hidp_session *session)
-{
-	hci_conn_put_device(session->conn);
-
-	list_del(&session->list);
-}
-
-static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
+static void hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
 {
 	memset(ci, 0, sizeof(*ci));
 	bacpy(&ci->bdaddr, &session->bdaddr);
 
 	ci->flags = session->flags;
-	ci->state = session->state;
+	ci->state = BT_CONNECTED;
 
 	ci->vendor  = 0x0000;
 	ci->product = 0x0000;
@@ -115,58 +98,80 @@ static void __hidp_copy_session(struct hidp_session *session, struct hidp_connin
 	}
 }
 
-static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev,
-				unsigned int type, unsigned int code, int value)
+/* assemble skb, queue message on @transmit and wake up the session thread */
+static int hidp_send_message(struct hidp_session *session, struct socket *sock,
+			     struct sk_buff_head *transmit, unsigned char hdr,
+			     const unsigned char *data, int size)
 {
-	unsigned char newleds;
 	struct sk_buff *skb;
+	struct sock *sk = sock->sk;
 
-	BT_DBG("session %p type %d code %d value %d", session, type, code, value);
-
-	if (type != EV_LED)
-		return -1;
-
-	newleds = (!!test_bit(LED_KANA,    dev->led) << 3) |
-		  (!!test_bit(LED_COMPOSE, dev->led) << 3) |
-		  (!!test_bit(LED_SCROLLL, dev->led) << 2) |
-		  (!!test_bit(LED_CAPSL,   dev->led) << 1) |
-		  (!!test_bit(LED_NUML,    dev->led));
-
-	if (session->leds == newleds)
-		return 0;
+	BT_DBG("session %p data %p size %d", session, data, size);
 
-	session->leds = newleds;
+	if (atomic_read(&session->terminate))
+		return -EIO;
 
-	skb = alloc_skb(3, GFP_ATOMIC);
+	skb = alloc_skb(size + 1, GFP_ATOMIC);
 	if (!skb) {
 		BT_ERR("Can't allocate memory for new frame");
 		return -ENOMEM;
 	}
 
-	*skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
-	*skb_put(skb, 1) = 0x01;
-	*skb_put(skb, 1) = newleds;
-
-	skb_queue_tail(&session->intr_transmit, skb);
+	*skb_put(skb, 1) = hdr;
+	if (data && size > 0)
+		memcpy(skb_put(skb, size), data, size);
 
-	hidp_schedule(session);
+	skb_queue_tail(transmit, skb);
+	wake_up_interruptible(sk_sleep(sk));
 
 	return 0;
 }
 
-static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+static int hidp_send_ctrl_message(struct hidp_session *session,
+				  unsigned char hdr, const unsigned char *data,
+				  int size)
 {
-	struct hid_device *hid = input_get_drvdata(dev);
-	struct hidp_session *session = hid->driver_data;
+	return hidp_send_message(session, session->ctrl_sock,
+				 &session->ctrl_transmit, hdr, data, size);
+}
 
-	return hidp_queue_event(session, dev, type, code, value);
+static int hidp_send_intr_message(struct hidp_session *session,
+				  unsigned char hdr, const unsigned char *data,
+				  int size)
+{
+	return hidp_send_message(session, session->intr_sock,
+				 &session->intr_transmit, hdr, data, size);
 }
 
-static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+static int hidp_input_event(struct input_dev *dev, unsigned int type,
+			    unsigned int code, int value)
 {
 	struct hidp_session *session = input_get_drvdata(dev);
+	unsigned char newleds;
+	unsigned char hdr, data[2];
+
+	BT_DBG("session %p type %d code %d value %d",
+	       session, type, code, value);
+
+	if (type != EV_LED)
+		return -1;
+
+	newleds = (!!test_bit(LED_KANA,    dev->led) << 3) |
+		  (!!test_bit(LED_COMPOSE, dev->led) << 3) |
+		  (!!test_bit(LED_SCROLLL, dev->led) << 2) |
+		  (!!test_bit(LED_CAPSL,   dev->led) << 1) |
+		  (!!test_bit(LED_NUML,    dev->led));
 
-	return hidp_queue_event(session, dev, type, code, value);
+	if (session->leds == newleds)
+		return 0;
+
+	session->leds = newleds;
+
+	hdr = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
+	data[0] = 0x01;
+	data[1] = newleds;
+
+	return hidp_send_intr_message(session, hdr, data, 2);
 }
 
 static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb)
@@ -224,71 +229,9 @@ static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb)
 	input_sync(dev);
 }
 
-static int __hidp_send_ctrl_message(struct hidp_session *session,
-				    unsigned char hdr, unsigned char *data,
-				    int size)
-{
-	struct sk_buff *skb;
-
-	BT_DBG("session %p data %p size %d", session, data, size);
-
-	if (atomic_read(&session->terminate))
-		return -EIO;
-
-	skb = alloc_skb(size + 1, GFP_ATOMIC);
-	if (!skb) {
-		BT_ERR("Can't allocate memory for new frame");
-		return -ENOMEM;
-	}
-
-	*skb_put(skb, 1) = hdr;
-	if (data && size > 0)
-		memcpy(skb_put(skb, size), data, size);
-
-	skb_queue_tail(&session->ctrl_transmit, skb);
-
-	return 0;
-}
-
-static int hidp_send_ctrl_message(struct hidp_session *session,
-			unsigned char hdr, unsigned char *data, int size)
-{
-	int err;
-
-	err = __hidp_send_ctrl_message(session, hdr, data, size);
-
-	hidp_schedule(session);
-
-	return err;
-}
-
-static int hidp_queue_report(struct hidp_session *session,
-				unsigned char *data, int size)
-{
-	struct sk_buff *skb;
-
-	BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size);
-
-	skb = alloc_skb(size + 1, GFP_ATOMIC);
-	if (!skb) {
-		BT_ERR("Can't allocate memory for new frame");
-		return -ENOMEM;
-	}
-
-	*skb_put(skb, 1) = 0xa2;
-	if (size > 0)
-		memcpy(skb_put(skb, size), data, size);
-
-	skb_queue_tail(&session->intr_transmit, skb);
-
-	hidp_schedule(session);
-
-	return 0;
-}
-
 static int hidp_send_report(struct hidp_session *session, struct hid_report *report)
 {
-	unsigned char buf[32];
+	unsigned char buf[32], hdr;
 	int rsize;
 
 	rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0);
@@ -296,8 +239,9 @@ static int hidp_send_report(struct hidp_session *session, struct hid_report *rep
 		return -EIO;
 
 	hid_output_report(report, buf);
+	hdr = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
 
-	return hidp_queue_report(session, buf, rsize);
+	return hidp_send_intr_message(session, hdr, buf, rsize);
 }
 
 static int hidp_get_raw_report(struct hid_device *hid,
@@ -336,17 +280,19 @@ static int hidp_get_raw_report(struct hid_device *hid,
 	session->waiting_report_number = numbered_reports ? report_number : -1;
 	set_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
 	data[0] = report_number;
-	ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, 1);
+	ret = hidp_send_ctrl_message(session, report_type, data, 1);
 	if (ret)
 		goto err;
 
 	/* Wait for the return of the report. The returned report
 	   gets put in session->report_return.  */
-	while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) {
+	while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) &&
+	       !atomic_read(&session->terminate)) {
 		int res;
 
 		res = wait_event_interruptible_timeout(session->report_queue,
-			!test_bit(HIDP_WAITING_FOR_RETURN, &session->flags),
+			!test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)
+				|| atomic_read(&session->terminate),
 			5*HZ);
 		if (res == 0) {
 			/* timeout */
@@ -389,14 +335,11 @@ static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, s
 	struct hidp_session *session = hid->driver_data;
 	int ret;
 
-	switch (report_type) {
-	case HID_FEATURE_REPORT:
-		report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE;
-		break;
-	case HID_OUTPUT_REPORT:
-		report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT;
-		break;
-	default:
+	if (report_type == HID_OUTPUT_REPORT) {
+		report_type = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
+		return hidp_send_intr_message(session, report_type,
+					      data, count);
+	} else if (report_type != HID_FEATURE_REPORT) {
 		return -EINVAL;
 	}
 
@@ -405,17 +348,19 @@ static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, s
 
 	/* Set up our wait, and send the report request to the device. */
 	set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags);
-	ret = hidp_send_ctrl_message(hid->driver_data, report_type, data,
-									count);
+	report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE;
+	ret = hidp_send_ctrl_message(session, report_type, data, count);
 	if (ret)
 		goto err;
 
 	/* Wait for the ACK from the device. */
-	while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) {
+	while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags) &&
+	       !atomic_read(&session->terminate)) {
 		int res;
 
 		res = wait_event_interruptible_timeout(session->report_queue,
-			!test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags),
+			!test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)
+				|| atomic_read(&session->terminate),
 			10*HZ);
 		if (res == 0) {
 			/* timeout */
@@ -446,8 +391,7 @@ static void hidp_idle_timeout(unsigned long arg)
 {
 	struct hidp_session *session = (struct hidp_session *) arg;
 
-	atomic_inc(&session->terminate);
-	wake_up_process(session->task);
+	hidp_session_terminate(session);
 }
 
 static void hidp_set_timer(struct hidp_session *session)
@@ -490,12 +434,12 @@ static void hidp_process_handshake(struct hidp_session *session,
 	case HIDP_HSHK_ERR_FATAL:
 		/* Device requests a reboot, as this is the only way this error
 		 * can be recovered. */
-		__hidp_send_ctrl_message(session,
+		hidp_send_ctrl_message(session,
 			HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0);
 		break;
 
 	default:
-		__hidp_send_ctrl_message(session,
+		hidp_send_ctrl_message(session,
 			HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
 		break;
 	}
@@ -515,8 +459,7 @@ static void hidp_process_hid_control(struct hidp_session *session,
 		skb_queue_purge(&session->ctrl_transmit);
 		skb_queue_purge(&session->intr_transmit);
 
-		atomic_inc(&session->terminate);
-		wake_up_process(current);
+		hidp_session_terminate(session);
 	}
 }
 
@@ -544,7 +487,7 @@ static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
 		break;
 
 	default:
-		__hidp_send_ctrl_message(session,
+		hidp_send_ctrl_message(session,
 			HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
 	}
 
@@ -591,7 +534,7 @@ static void hidp_recv_ctrl_frame(struct hidp_session *session,
 		break;
 
 	default:
-		__hidp_send_ctrl_message(session,
+		hidp_send_ctrl_message(session,
 			HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0);
 		break;
 	}
@@ -642,32 +585,24 @@ static int hidp_send_frame(struct socket *sock, unsigned char *data, int len)
 	return kernel_sendmsg(sock, &msg, &iv, 1, len);
 }
 
-static void hidp_process_intr_transmit(struct hidp_session *session)
+/* dequeue message from @transmit and send via @sock */
+static void hidp_process_transmit(struct hidp_session *session,
+				  struct sk_buff_head *transmit,
+				  struct socket *sock)
 {
 	struct sk_buff *skb;
+	int ret;
 
 	BT_DBG("session %p", session);
 
-	while ((skb = skb_dequeue(&session->intr_transmit))) {
-		if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) {
-			skb_queue_head(&session->intr_transmit, skb);
+	while ((skb = skb_dequeue(transmit))) {
+		ret = hidp_send_frame(sock, skb->data, skb->len);
+		if (ret == -EAGAIN) {
+			skb_queue_head(transmit, skb);
 			break;
-		}
-
-		hidp_set_timer(session);
-		kfree_skb(skb);
-	}
-}
-
-static void hidp_process_ctrl_transmit(struct hidp_session *session)
-{
-	struct sk_buff *skb;
-
-	BT_DBG("session %p", session);
-
-	while ((skb = skb_dequeue(&session->ctrl_transmit))) {
-		if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) {
-			skb_queue_head(&session->ctrl_transmit, skb);
+		} else if (ret < 0) {
+			hidp_session_terminate(session);
+			kfree_skb(skb);
 			break;
 		}
 
@@ -676,122 +611,6 @@ static void hidp_process_ctrl_transmit(struct hidp_session *session)
 	}
 }
 
-static int hidp_session(void *arg)
-{
-	struct hidp_session *session = arg;
-	struct sock *ctrl_sk = session->ctrl_sock->sk;
-	struct sock *intr_sk = session->intr_sock->sk;
-	struct sk_buff *skb;
-	wait_queue_t ctrl_wait, intr_wait;
-
-	BT_DBG("session %p", session);
-
-	__module_get(THIS_MODULE);
-	set_user_nice(current, -15);
-
-	init_waitqueue_entry(&ctrl_wait, current);
-	init_waitqueue_entry(&intr_wait, current);
-	add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait);
-	add_wait_queue(sk_sleep(intr_sk), &intr_wait);
-	session->waiting_for_startup = 0;
-	wake_up_interruptible(&session->startup_queue);
-	set_current_state(TASK_INTERRUPTIBLE);
-	while (!atomic_read(&session->terminate)) {
-		if (ctrl_sk->sk_state != BT_CONNECTED ||
-				intr_sk->sk_state != BT_CONNECTED)
-			break;
-
-		while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
-			skb_orphan(skb);
-			if (!skb_linearize(skb))
-				hidp_recv_intr_frame(session, skb);
-			else
-				kfree_skb(skb);
-		}
-
-		hidp_process_intr_transmit(session);
-
-		while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) {
-			skb_orphan(skb);
-			if (!skb_linearize(skb))
-				hidp_recv_ctrl_frame(session, skb);
-			else
-				kfree_skb(skb);
-		}
-
-		hidp_process_ctrl_transmit(session);
-
-		schedule();
-		set_current_state(TASK_INTERRUPTIBLE);
-	}
-	set_current_state(TASK_RUNNING);
-	atomic_inc(&session->terminate);
-	remove_wait_queue(sk_sleep(intr_sk), &intr_wait);
-	remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait);
-
-	clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags);
-	clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags);
-	wake_up_interruptible(&session->report_queue);
-
-	down_write(&hidp_session_sem);
-
-	hidp_del_timer(session);
-
-	if (session->input) {
-		input_unregister_device(session->input);
-		session->input = NULL;
-	}
-
-	if (session->hid) {
-		hid_destroy_device(session->hid);
-		session->hid = NULL;
-	}
-
-	/* Wakeup user-space polling for socket errors */
-	session->intr_sock->sk->sk_err = EUNATCH;
-	session->ctrl_sock->sk->sk_err = EUNATCH;
-
-	hidp_schedule(session);
-
-	fput(session->intr_sock->file);
-
-	wait_event_timeout(*(sk_sleep(ctrl_sk)),
-		(ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500));
-
-	fput(session->ctrl_sock->file);
-
-	__hidp_unlink_session(session);
-
-	up_write(&hidp_session_sem);
-
-	kfree(session->rd_data);
-	kfree(session);
-	module_put_and_exit(0);
-	return 0;
-}
-
-static struct hci_conn *hidp_get_connection(struct hidp_session *session)
-{
-	bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src;
-	bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst;
-	struct hci_conn *conn;
-	struct hci_dev *hdev;
-
-	hdev = hci_get_route(dst, src);
-	if (!hdev)
-		return NULL;
-
-	hci_dev_lock(hdev);
-	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
-	if (conn)
-		hci_conn_hold_device(conn);
-	hci_dev_unlock(hdev);
-
-	hci_dev_put(hdev);
-
-	return conn;
-}
-
 static int hidp_setup_input(struct hidp_session *session,
 				struct hidp_connadd_req *req)
 {
@@ -839,7 +658,7 @@ static int hidp_setup_input(struct hidp_session *session,
 		input->relbit[0] |= BIT_MASK(REL_WHEEL);
 	}
 
-	input->dev.parent = &session->conn->dev;
+	input->dev.parent = &session->conn->hcon->dev;
 
 	input->event = hidp_input_event;
 
@@ -898,7 +717,6 @@ static struct hid_ll_driver hidp_hid_driver = {
 	.stop = hidp_stop,
 	.open  = hidp_open,
 	.close = hidp_close,
-	.hidinput_input_event = hidp_hidinput_event,
 };
 
 /* This function sets up the hid device. It does not add it
@@ -943,7 +761,7 @@ static int hidp_setup_hid(struct hidp_session *session,
 	snprintf(hid->uniq, sizeof(hid->uniq), "%pMR",
 		 &bt_sk(session->ctrl_sock->sk)->dst);
 
-	hid->dev.parent = &session->conn->dev;
+	hid->dev.parent = &session->conn->hcon->dev;
 	hid->ll_driver = &hidp_hid_driver;
 
 	hid->hid_get_raw_report = hidp_get_raw_report;
@@ -965,80 +783,217 @@ fault:
 	return err;
 }
 
-int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock)
+/* initialize session devices */
+static int hidp_session_dev_init(struct hidp_session *session,
+				 struct hidp_connadd_req *req)
 {
-	struct hidp_session *session, *s;
-	int vendor, product;
-	int err;
+	int ret;
 
-	BT_DBG("");
+	if (req->rd_size > 0) {
+		ret = hidp_setup_hid(session, req);
+		if (ret && ret != -ENODEV)
+			return ret;
+	}
 
-	if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) ||
-			bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst))
-		return -ENOTUNIQ;
+	if (!session->hid) {
+		ret = hidp_setup_input(session, req);
+		if (ret < 0)
+			return ret;
+	}
 
-	BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size);
+	return 0;
+}
 
-	down_write(&hidp_session_sem);
+/* destroy session devices */
+static void hidp_session_dev_destroy(struct hidp_session *session)
+{
+	if (session->hid)
+		put_device(&session->hid->dev);
+	else if (session->input)
+		input_put_device(session->input);
 
-	s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst);
-	if (s && s->state == BT_CONNECTED) {
-		up_write(&hidp_session_sem);
-		return -EEXIST;
-	}
+	kfree(session->rd_data);
+	session->rd_data = NULL;
+}
 
-	session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL);
-	if (!session) {
-		up_write(&hidp_session_sem);
-		return -ENOMEM;
-	}
+/* add HID/input devices to their underlying bus systems */
+static int hidp_session_dev_add(struct hidp_session *session)
+{
+	int ret;
 
-	bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst);
+	/* Both HID and input systems drop a ref-count when unregistering the
+	 * device but they don't take a ref-count when registering them. Work
+	 * around this by explicitly taking a refcount during registration
+	 * which is dropped automatically by unregistering the devices. */
 
-	session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->chan->omtu,
-					l2cap_pi(ctrl_sock->sk)->chan->imtu);
-	session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->chan->omtu,
-					l2cap_pi(intr_sock->sk)->chan->imtu);
+	if (session->hid) {
+		ret = hid_add_device(session->hid);
+		if (ret)
+			return ret;
+		get_device(&session->hid->dev);
+	} else if (session->input) {
+		ret = input_register_device(session->input);
+		if (ret)
+			return ret;
+		input_get_device(session->input);
+	}
 
-	BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu);
+	return 0;
+}
 
-	session->ctrl_sock = ctrl_sock;
-	session->intr_sock = intr_sock;
-	session->state     = BT_CONNECTED;
+/* remove HID/input devices from their bus systems */
+static void hidp_session_dev_del(struct hidp_session *session)
+{
+	if (session->hid)
+		hid_destroy_device(session->hid);
+	else if (session->input)
+		input_unregister_device(session->input);
+}
 
-	session->conn = hidp_get_connection(session);
-	if (!session->conn) {
-		err = -ENOTCONN;
-		goto failed;
-	}
+/*
+ * Create new session object
+ * Allocate session object, initialize static fields, copy input data into the
+ * object and take a reference to all sub-objects.
+ * This returns 0 on success and puts a pointer to the new session object in
+ * \out. Otherwise, an error code is returned.
+ * The new session object has an initial ref-count of 1.
+ */
+static int hidp_session_new(struct hidp_session **out, const bdaddr_t *bdaddr,
+			    struct socket *ctrl_sock,
+			    struct socket *intr_sock,
+			    struct hidp_connadd_req *req,
+			    struct l2cap_conn *conn)
+{
+	struct hidp_session *session;
+	int ret;
+	struct bt_sock *ctrl, *intr;
+
+	ctrl = bt_sk(ctrl_sock->sk);
+	intr = bt_sk(intr_sock->sk);
 
-	setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session);
+	session = kzalloc(sizeof(*session), GFP_KERNEL);
+	if (!session)
+		return -ENOMEM;
 
+	/* object and runtime management */
+	kref_init(&session->ref);
+	atomic_set(&session->state, HIDP_SESSION_IDLING);
+	init_waitqueue_head(&session->state_queue);
+	session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
+
+	/* connection management */
+	bacpy(&session->bdaddr, bdaddr);
+	session->conn = conn;
+	session->user.probe = hidp_session_probe;
+	session->user.remove = hidp_session_remove;
+	session->ctrl_sock = ctrl_sock;
+	session->intr_sock = intr_sock;
 	skb_queue_head_init(&session->ctrl_transmit);
 	skb_queue_head_init(&session->intr_transmit);
+	session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl)->chan->omtu,
+					l2cap_pi(ctrl)->chan->imtu);
+	session->intr_mtu = min_t(uint, l2cap_pi(intr)->chan->omtu,
+					l2cap_pi(intr)->chan->imtu);
+	session->idle_to = req->idle_to;
+
+	/* device management */
+	setup_timer(&session->timer, hidp_idle_timeout,
+		    (unsigned long)session);
 
+	/* session data */
 	mutex_init(&session->report_mutex);
 	init_waitqueue_head(&session->report_queue);
-	init_waitqueue_head(&session->startup_queue);
-	session->waiting_for_startup = 1;
-	session->flags   = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
-	session->idle_to = req->idle_to;
 
-	__hidp_link_session(session);
+	ret = hidp_session_dev_init(session, req);
+	if (ret)
+		goto err_free;
 
-	if (req->rd_size > 0) {
-		err = hidp_setup_hid(session, req);
-		if (err && err != -ENODEV)
-			goto purge;
-	}
+	l2cap_conn_get(session->conn);
+	get_file(session->intr_sock->file);
+	get_file(session->ctrl_sock->file);
+	*out = session;
+	return 0;
 
-	if (!session->hid) {
-		err = hidp_setup_input(session, req);
-		if (err < 0)
-			goto purge;
+err_free:
+	kfree(session);
+	return ret;
+}
+
+/* increase ref-count of the given session by one */
+static void hidp_session_get(struct hidp_session *session)
+{
+	kref_get(&session->ref);
+}
+
+/* release callback */
+static void session_free(struct kref *ref)
+{
+	struct hidp_session *session = container_of(ref, struct hidp_session,
+						    ref);
+
+	hidp_session_dev_destroy(session);
+	skb_queue_purge(&session->ctrl_transmit);
+	skb_queue_purge(&session->intr_transmit);
+	fput(session->intr_sock->file);
+	fput(session->ctrl_sock->file);
+	l2cap_conn_put(session->conn);
+	kfree(session);
+}
+
+/* decrease ref-count of the given session by one */
+static void hidp_session_put(struct hidp_session *session)
+{
+	kref_put(&session->ref, session_free);
+}
+
+/*
+ * Search the list of active sessions for a session with target address
+ * \bdaddr. You must hold at least a read-lock on \hidp_session_sem. As long as
+ * you do not release this lock, the session objects cannot vanish and you can
+ * safely take a reference to the session yourself.
+ */
+static struct hidp_session *__hidp_session_find(const bdaddr_t *bdaddr)
+{
+	struct hidp_session *session;
+
+	list_for_each_entry(session, &hidp_session_list, list) {
+		if (!bacmp(bdaddr, &session->bdaddr))
+			return session;
 	}
 
-	hidp_set_timer(session);
+	return NULL;
+}
+
+/*
+ * Same as __hidp_session_find() but no locks must be held. This also takes a
+ * reference of the returned session (if non-NULL) so you must drop this
+ * reference if you no longer use the object.
+ */
+static struct hidp_session *hidp_session_find(const bdaddr_t *bdaddr)
+{
+	struct hidp_session *session;
+
+	down_read(&hidp_session_sem);
+
+	session = __hidp_session_find(bdaddr);
+	if (session)
+		hidp_session_get(session);
+
+	up_read(&hidp_session_sem);
+
+	return session;
+}
+
+/*
+ * Start session synchronously
+ * This starts a session thread and waits until initialization
+ * is done or returns an error if it couldn't be started.
+ * If this returns 0 the session thread is up and running. You must call
+ * hipd_session_stop_sync() before deleting any runtime resources.
+ */
+static int hidp_session_start_sync(struct hidp_session *session)
+{
+	unsigned int vendor, product;
 
 	if (session->hid) {
 		vendor  = session->hid->vendor;
@@ -1051,98 +1006,320 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
 		product = 0x0000;
 	}
 
-	session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x",
-							vendor, product);
-	if (IS_ERR(session->task)) {
-		err = PTR_ERR(session->task);
-		goto unlink;
-	}
+	session->task = kthread_run(hidp_session_thread, session,
+				    "khidpd_%04x%04x", vendor, product);
+	if (IS_ERR(session->task))
+		return PTR_ERR(session->task);
 
-	while (session->waiting_for_startup) {
-		wait_event_interruptible(session->startup_queue,
-			!session->waiting_for_startup);
-	}
+	while (atomic_read(&session->state) <= HIDP_SESSION_IDLING)
+		wait_event(session->state_queue,
+			   atomic_read(&session->state) > HIDP_SESSION_IDLING);
 
-	if (session->hid)
-		err = hid_add_device(session->hid);
-	else
-		err = input_register_device(session->input);
+	return 0;
+}
 
-	if (err < 0) {
-		atomic_inc(&session->terminate);
-		wake_up_process(session->task);
-		up_write(&hidp_session_sem);
-		return err;
-	}
+/*
+ * Terminate session thread
+ * Wake up session thread and notify it to stop. This is asynchronous and
+ * returns immediately. Call this whenever a runtime error occurs and you want
+ * the session to stop.
+ * Note: wake_up_process() performs any necessary memory-barriers for us.
+ */
+static void hidp_session_terminate(struct hidp_session *session)
+{
+	atomic_inc(&session->terminate);
+	wake_up_process(session->task);
+}
 
-	if (session->input) {
-		hidp_send_ctrl_message(session,
-			HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0);
-		session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE);
+/*
+ * Probe HIDP session
+ * This is called from the l2cap_conn core when our l2cap_user object is bound
+ * to the hci-connection. We get the session via the \user object and can now
+ * start the session thread, register the HID/input devices and link it into
+ * the global session list.
+ * The global session-list owns its own reference to the session object so you
+ * can drop your own reference after registering the l2cap_user object.
+ */
+static int hidp_session_probe(struct l2cap_conn *conn,
+			      struct l2cap_user *user)
+{
+	struct hidp_session *session = container_of(user,
+						    struct hidp_session,
+						    user);
+	struct hidp_session *s;
+	int ret;
+
+	down_write(&hidp_session_sem);
 
-		session->leds = 0xff;
-		hidp_input_event(session->input, EV_LED, 0, 0);
+	/* check that no other session for this device exists */
+	s = __hidp_session_find(&session->bdaddr);
+	if (s) {
+		ret = -EEXIST;
+		goto out_unlock;
 	}
 
+	ret = hidp_session_start_sync(session);
+	if (ret)
+		goto out_unlock;
+
+	ret = hidp_session_dev_add(session);
+	if (ret)
+		goto out_stop;
+
+	hidp_session_get(session);
+	list_add(&session->list, &hidp_session_list);
+	ret = 0;
+	goto out_unlock;
+
+out_stop:
+	hidp_session_terminate(session);
+out_unlock:
 	up_write(&hidp_session_sem);
-	return 0;
+	return ret;
+}
+
+/*
+ * Remove HIDP session
+ * Called from the l2cap_conn core when either we explicitly unregistered
+ * the l2cap_user object or if the underlying connection is shut down.
+ * We signal the hidp-session thread to shut down, unregister the HID/input
+ * devices and unlink the session from the global list.
+ * This drops the reference to the session that is owned by the global
+ * session-list.
+ * Note: We _must_ not synchronosly wait for the session-thread to shut down.
+ * This is, because the session-thread might be waiting for an HCI lock that is
+ * held while we are called. Therefore, we only unregister the devices and
+ * notify the session-thread to terminate. The thread itself owns a reference
+ * to the session object so it can safely shut down.
+ */
+static void hidp_session_remove(struct l2cap_conn *conn,
+				struct l2cap_user *user)
+{
+	struct hidp_session *session = container_of(user,
+						    struct hidp_session,
+						    user);
+
+	down_write(&hidp_session_sem);
+
+	hidp_session_terminate(session);
+	hidp_session_dev_del(session);
+	list_del(&session->list);
+
+	up_write(&hidp_session_sem);
+
+	hidp_session_put(session);
+}
+
+/*
+ * Session Worker
+ * This performs the actual main-loop of the HIDP worker. We first check
+ * whether the underlying connection is still alive, then parse all pending
+ * messages and finally send all outstanding messages.
+ */
+static void hidp_session_run(struct hidp_session *session)
+{
+	struct sock *ctrl_sk = session->ctrl_sock->sk;
+	struct sock *intr_sk = session->intr_sock->sk;
+	struct sk_buff *skb;
+
+	for (;;) {
+		/*
+		 * This thread can be woken up two ways:
+		 *  - You call hidp_session_terminate() which sets the
+		 *    session->terminate flag and wakes this thread up.
+		 *  - Via modifying the socket state of ctrl/intr_sock. This
+		 *    thread is woken up by ->sk_state_changed().
+		 *
+		 * Note: set_current_state() performs any necessary
+		 * memory-barriers for us.
+		 */
+		set_current_state(TASK_INTERRUPTIBLE);
+
+		if (atomic_read(&session->terminate))
+			break;
+
+		if (ctrl_sk->sk_state != BT_CONNECTED ||
+		    intr_sk->sk_state != BT_CONNECTED)
+			break;
+
+		/* parse incoming intr-skbs */
+		while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
+			skb_orphan(skb);
+			if (!skb_linearize(skb))
+				hidp_recv_intr_frame(session, skb);
+			else
+				kfree_skb(skb);
+		}
+
+		/* send pending intr-skbs */
+		hidp_process_transmit(session, &session->intr_transmit,
+				      session->intr_sock);
 
-unlink:
+		/* parse incoming ctrl-skbs */
+		while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) {
+			skb_orphan(skb);
+			if (!skb_linearize(skb))
+				hidp_recv_ctrl_frame(session, skb);
+			else
+				kfree_skb(skb);
+		}
+
+		/* send pending ctrl-skbs */
+		hidp_process_transmit(session, &session->ctrl_transmit,
+				      session->ctrl_sock);
+
+		schedule();
+	}
+
+	atomic_inc(&session->terminate);
+	set_current_state(TASK_RUNNING);
+}
+
+/*
+ * HIDP session thread
+ * This thread runs the I/O for a single HIDP session. Startup is synchronous
+ * which allows us to take references to ourself here instead of doing that in
+ * the caller.
+ * When we are ready to run we notify the caller and call hidp_session_run().
+ */
+static int hidp_session_thread(void *arg)
+{
+	struct hidp_session *session = arg;
+	wait_queue_t ctrl_wait, intr_wait;
+
+	BT_DBG("session %p", session);
+
+	/* initialize runtime environment */
+	hidp_session_get(session);
+	__module_get(THIS_MODULE);
+	set_user_nice(current, -15);
+	hidp_set_timer(session);
+
+	init_waitqueue_entry(&ctrl_wait, current);
+	init_waitqueue_entry(&intr_wait, current);
+	add_wait_queue(sk_sleep(session->ctrl_sock->sk), &ctrl_wait);
+	add_wait_queue(sk_sleep(session->intr_sock->sk), &intr_wait);
+	/* This memory barrier is paired with wq_has_sleeper(). See
+	 * sock_poll_wait() for more information why this is needed. */
+	smp_mb();
+
+	/* notify synchronous startup that we're ready */
+	atomic_inc(&session->state);
+	wake_up(&session->state_queue);
+
+	/* run session */
+	hidp_session_run(session);
+
+	/* cleanup runtime environment */
+	remove_wait_queue(sk_sleep(session->intr_sock->sk), &intr_wait);
+	remove_wait_queue(sk_sleep(session->intr_sock->sk), &ctrl_wait);
+	wake_up_interruptible(&session->report_queue);
 	hidp_del_timer(session);
 
-	if (session->input) {
-		input_unregister_device(session->input);
-		session->input = NULL;
+	/*
+	 * If we stopped ourself due to any internal signal, we should try to
+	 * unregister our own session here to avoid having it linger until the
+	 * parent l2cap_conn dies or user-space cleans it up.
+	 * This does not deadlock as we don't do any synchronous shutdown.
+	 * Instead, this call has the same semantics as if user-space tried to
+	 * delete the session.
+	 */
+	l2cap_unregister_user(session->conn, &session->user);
+	hidp_session_put(session);
+
+	module_put_and_exit(0);
+	return 0;
+}
+
+static int hidp_verify_sockets(struct socket *ctrl_sock,
+			       struct socket *intr_sock)
+{
+	struct bt_sock *ctrl, *intr;
+	struct hidp_session *session;
+
+	if (!l2cap_is_socket(ctrl_sock) || !l2cap_is_socket(intr_sock))
+		return -EINVAL;
+
+	ctrl = bt_sk(ctrl_sock->sk);
+	intr = bt_sk(intr_sock->sk);
+
+	if (bacmp(&ctrl->src, &intr->src) || bacmp(&ctrl->dst, &intr->dst))
+		return -ENOTUNIQ;
+	if (ctrl->sk.sk_state != BT_CONNECTED ||
+	    intr->sk.sk_state != BT_CONNECTED)
+		return -EBADFD;
+
+	/* early session check, we check again during session registration */
+	session = hidp_session_find(&ctrl->dst);
+	if (session) {
+		hidp_session_put(session);
+		return -EEXIST;
 	}
 
-	if (session->hid) {
-		hid_destroy_device(session->hid);
-		session->hid = NULL;
+	return 0;
+}
+
+int hidp_connection_add(struct hidp_connadd_req *req,
+			struct socket *ctrl_sock,
+			struct socket *intr_sock)
+{
+	struct hidp_session *session;
+	struct l2cap_conn *conn;
+	struct l2cap_chan *chan = l2cap_pi(ctrl_sock->sk)->chan;
+	int ret;
+
+	ret = hidp_verify_sockets(ctrl_sock, intr_sock);
+	if (ret)
+		return ret;
+
+	conn = NULL;
+	l2cap_chan_lock(chan);
+	if (chan->conn) {
+		l2cap_conn_get(chan->conn);
+		conn = chan->conn;
 	}
+	l2cap_chan_unlock(chan);
 
-	kfree(session->rd_data);
-	session->rd_data = NULL;
+	if (!conn)
+		return -EBADFD;
 
-purge:
-	__hidp_unlink_session(session);
+	ret = hidp_session_new(&session, &bt_sk(ctrl_sock->sk)->dst, ctrl_sock,
+			       intr_sock, req, conn);
+	if (ret)
+		goto out_conn;
 
-	skb_queue_purge(&session->ctrl_transmit);
-	skb_queue_purge(&session->intr_transmit);
+	ret = l2cap_register_user(conn, &session->user);
+	if (ret)
+		goto out_session;
 
-failed:
-	up_write(&hidp_session_sem);
+	ret = 0;
 
-	kfree(session);
-	return err;
+out_session:
+	hidp_session_put(session);
+out_conn:
+	l2cap_conn_put(conn);
+	return ret;
 }
 
-int hidp_del_connection(struct hidp_conndel_req *req)
+int hidp_connection_del(struct hidp_conndel_req *req)
 {
 	struct hidp_session *session;
-	int err = 0;
 
-	BT_DBG("");
+	session = hidp_session_find(&req->bdaddr);
+	if (!session)
+		return -ENOENT;
 
-	down_read(&hidp_session_sem);
+	if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG))
+		hidp_send_ctrl_message(session,
+				       HIDP_TRANS_HID_CONTROL |
+				         HIDP_CTRL_VIRTUAL_CABLE_UNPLUG,
+				       NULL, 0);
+	else
+		l2cap_unregister_user(session->conn, &session->user);
 
-	session = __hidp_get_session(&req->bdaddr);
-	if (session) {
-		if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) {
-			hidp_send_ctrl_message(session,
-				HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0);
-		} else {
-			/* Flush the transmit queues */
-			skb_queue_purge(&session->ctrl_transmit);
-			skb_queue_purge(&session->intr_transmit);
-
-			atomic_inc(&session->terminate);
-			wake_up_process(session->task);
-		}
-	} else
-		err = -ENOENT;
+	hidp_session_put(session);
 
-	up_read(&hidp_session_sem);
-	return err;
+	return 0;
 }
 
 int hidp_get_connlist(struct hidp_connlist_req *req)
@@ -1157,7 +1334,7 @@ int hidp_get_connlist(struct hidp_connlist_req *req)
 	list_for_each_entry(session, &hidp_session_list, list) {
 		struct hidp_conninfo ci;
 
-		__hidp_copy_session(session, &ci);
+		hidp_copy_session(session, &ci);
 
 		if (copy_to_user(req->ci, &ci, sizeof(ci))) {
 			err = -EFAULT;
@@ -1178,18 +1355,14 @@ int hidp_get_connlist(struct hidp_connlist_req *req)
 int hidp_get_conninfo(struct hidp_conninfo *ci)
 {
 	struct hidp_session *session;
-	int err = 0;
-
-	down_read(&hidp_session_sem);
 
-	session = __hidp_get_session(&ci->bdaddr);
-	if (session)
-		__hidp_copy_session(session, ci);
-	else
-		err = -ENOENT;
+	session = hidp_session_find(&ci->bdaddr);
+	if (session) {
+		hidp_copy_session(session, ci);
+		hidp_session_put(session);
+	}
 
-	up_read(&hidp_session_sem);
-	return err;
+	return session ? 0 : -ENOENT;
 }
 
 static int __init hidp_init(void)
@@ -1208,6 +1381,7 @@ module_init(hidp_init);
 module_exit(hidp_exit);
 
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
 MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h
index af1bcc823f26..6162ce8606ac 100644
--- a/net/bluetooth/hidp/hidp.h
+++ b/net/bluetooth/hidp/hidp.h
@@ -24,7 +24,9 @@
 #define __HIDP_H
 
 #include <linux/types.h>
+#include <linux/kref.h>
 #include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/l2cap.h>
 
 /* HIDP header masks */
 #define HIDP_HEADER_TRANS_MASK			0xf0
@@ -119,43 +121,52 @@ struct hidp_connlist_req {
 	struct hidp_conninfo __user *ci;
 };
 
-int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock);
-int hidp_del_connection(struct hidp_conndel_req *req);
+int hidp_connection_add(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock);
+int hidp_connection_del(struct hidp_conndel_req *req);
 int hidp_get_connlist(struct hidp_connlist_req *req);
 int hidp_get_conninfo(struct hidp_conninfo *ci);
 
+enum hidp_session_state {
+	HIDP_SESSION_IDLING,
+	HIDP_SESSION_RUNNING,
+};
+
 /* HIDP session defines */
 struct hidp_session {
 	struct list_head list;
+	struct kref ref;
 
-	struct hci_conn *conn;
+	/* runtime management */
+	atomic_t state;
+	wait_queue_head_t state_queue;
+	atomic_t terminate;
+	struct task_struct *task;
+	unsigned long flags;
 
+	/* connection management */
+	bdaddr_t bdaddr;
+	struct l2cap_conn *conn;
+	struct l2cap_user user;
 	struct socket *ctrl_sock;
 	struct socket *intr_sock;
-
-	bdaddr_t bdaddr;
-
-	unsigned long state;
-	unsigned long flags;
-	unsigned long idle_to;
-
+	struct sk_buff_head ctrl_transmit;
+	struct sk_buff_head intr_transmit;
 	uint ctrl_mtu;
 	uint intr_mtu;
+	unsigned long idle_to;
 
-	atomic_t terminate;
-	struct task_struct *task;
-
-	unsigned char keys[8];
-	unsigned char leds;
-
+	/* device management */
 	struct input_dev *input;
-
 	struct hid_device *hid;
-
 	struct timer_list timer;
 
-	struct sk_buff_head ctrl_transmit;
-	struct sk_buff_head intr_transmit;
+	/* Report descriptor */
+	__u8 *rd_data;
+	uint rd_size;
+
+	/* session data */
+	unsigned char keys[8];
+	unsigned char leds;
 
 	/* Used in hidp_get_raw_report() */
 	int waiting_report_type; /* HIDP_DATA_RTYPE_* */
@@ -166,24 +177,8 @@ struct hidp_session {
 
 	/* Used in hidp_output_raw_report() */
 	int output_report_success; /* boolean */
-
-	/* Report descriptor */
-	__u8 *rd_data;
-	uint rd_size;
-
-	wait_queue_head_t startup_queue;
-	int waiting_for_startup;
 };
 
-static inline void hidp_schedule(struct hidp_session *session)
-{
-	struct sock *ctrl_sk = session->ctrl_sock->sk;
-	struct sock *intr_sk = session->intr_sock->sk;
-
-	wake_up_interruptible(sk_sleep(ctrl_sk));
-	wake_up_interruptible(sk_sleep(intr_sk));
-}
-
 /* HIDP init defines */
 extern int __init hidp_init_sockets(void);
 extern void __exit hidp_cleanup_sockets(void);
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index 5d0f1ca0a314..2f4cbb0865ca 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c
@@ -77,21 +77,12 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
 			return err;
 		}
 
-		if (csock->sk->sk_state != BT_CONNECTED ||
-				isock->sk->sk_state != BT_CONNECTED) {
-			sockfd_put(csock);
-			sockfd_put(isock);
-			return -EBADFD;
-		}
+		err = hidp_connection_add(&ca, csock, isock);
+		if (!err && copy_to_user(argp, &ca, sizeof(ca)))
+			err = -EFAULT;
 
-		err = hidp_add_connection(&ca, csock, isock);
-		if (!err) {
-			if (copy_to_user(argp, &ca, sizeof(ca)))
-				err = -EFAULT;
-		} else {
-			sockfd_put(csock);
-			sockfd_put(isock);
-		}
+		sockfd_put(csock);
+		sockfd_put(isock);
 
 		return err;
 
@@ -102,7 +93,7 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
 		if (copy_from_user(&cd, argp, sizeof(cd)))
 			return -EFAULT;
 
-		return hidp_del_connection(&cd);
+		return hidp_connection_del(&cd);
 
 	case HIDPGETCONNLIST:
 		if (copy_from_user(&cl, argp, sizeof(cl)))
@@ -296,7 +287,6 @@ int __init hidp_init_sockets(void)
 	return 0;
 
 error:
-	BT_ERR("Can't register HIDP socket");
 	proto_unregister(&hidp_proto);
 	return err;
 }
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 7c7e9321f1ea..eae1d9f90b68 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -571,7 +571,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
 		chan->conn = NULL;
 
 		if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP)
-			hci_conn_put(conn->hcon);
+			hci_conn_drop(conn->hcon);
 
 		if (mgr && mgr->bredr_chan == chan)
 			mgr->bredr_chan = NULL;
@@ -1446,6 +1446,89 @@ static void l2cap_info_timeout(struct work_struct *work)
 	l2cap_conn_start(conn);
 }
 
+/*
+ * l2cap_user
+ * External modules can register l2cap_user objects on l2cap_conn. The ->probe
+ * callback is called during registration. The ->remove callback is called
+ * during unregistration.
+ * An l2cap_user object can either be explicitly unregistered or when the
+ * underlying l2cap_conn object is deleted. This guarantees that l2cap->hcon,
+ * l2cap->hchan, .. are valid as long as the remove callback hasn't been called.
+ * External modules must own a reference to the l2cap_conn object if they intend
+ * to call l2cap_unregister_user(). The l2cap_conn object might get destroyed at
+ * any time if they don't.
+ */
+
+int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user)
+{
+	struct hci_dev *hdev = conn->hcon->hdev;
+	int ret;
+
+	/* We need to check whether l2cap_conn is registered. If it is not, we
+	 * must not register the l2cap_user. l2cap_conn_del() is unregisters
+	 * l2cap_conn objects, but doesn't provide its own locking. Instead, it
+	 * relies on the parent hci_conn object to be locked. This itself relies
+	 * on the hci_dev object to be locked. So we must lock the hci device
+	 * here, too. */
+
+	hci_dev_lock(hdev);
+
+	if (user->list.next || user->list.prev) {
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	/* conn->hchan is NULL after l2cap_conn_del() was called */
+	if (!conn->hchan) {
+		ret = -ENODEV;
+		goto out_unlock;
+	}
+
+	ret = user->probe(conn, user);
+	if (ret)
+		goto out_unlock;
+
+	list_add(&user->list, &conn->users);
+	ret = 0;
+
+out_unlock:
+	hci_dev_unlock(hdev);
+	return ret;
+}
+EXPORT_SYMBOL(l2cap_register_user);
+
+void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user)
+{
+	struct hci_dev *hdev = conn->hcon->hdev;
+
+	hci_dev_lock(hdev);
+
+	if (!user->list.next || !user->list.prev)
+		goto out_unlock;
+
+	list_del(&user->list);
+	user->list.next = NULL;
+	user->list.prev = NULL;
+	user->remove(conn, user);
+
+out_unlock:
+	hci_dev_unlock(hdev);
+}
+EXPORT_SYMBOL(l2cap_unregister_user);
+
+static void l2cap_unregister_all_users(struct l2cap_conn *conn)
+{
+	struct l2cap_user *user;
+
+	while (!list_empty(&conn->users)) {
+		user = list_first_entry(&conn->users, struct l2cap_user, list);
+		list_del(&user->list);
+		user->list.next = NULL;
+		user->list.prev = NULL;
+		user->remove(conn, user);
+	}
+}
+
 static void l2cap_conn_del(struct hci_conn *hcon, int err)
 {
 	struct l2cap_conn *conn = hcon->l2cap_data;
@@ -1458,6 +1541,8 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
 
 	kfree_skb(conn->rx_skb);
 
+	l2cap_unregister_all_users(conn);
+
 	mutex_lock(&conn->chan_lock);
 
 	/* Kill channels */
@@ -1486,7 +1571,8 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
 	}
 
 	hcon->l2cap_data = NULL;
-	kfree(conn);
+	conn->hchan = NULL;
+	l2cap_conn_put(conn);
 }
 
 static void security_timeout(struct work_struct *work)
@@ -1502,12 +1588,12 @@ static void security_timeout(struct work_struct *work)
 	}
 }
 
-static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
+static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
 {
 	struct l2cap_conn *conn = hcon->l2cap_data;
 	struct hci_chan *hchan;
 
-	if (conn || status)
+	if (conn)
 		return conn;
 
 	hchan = hci_chan_create(hcon);
@@ -1520,8 +1606,10 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
 		return NULL;
 	}
 
+	kref_init(&conn->ref);
 	hcon->l2cap_data = conn;
 	conn->hcon = hcon;
+	hci_conn_get(conn->hcon);
 	conn->hchan = hchan;
 
 	BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
@@ -1547,6 +1635,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
 	mutex_init(&conn->chan_lock);
 
 	INIT_LIST_HEAD(&conn->chan_l);
+	INIT_LIST_HEAD(&conn->users);
 
 	if (hcon->type == LE_LINK)
 		INIT_DELAYED_WORK(&conn->security_timer, security_timeout);
@@ -1558,6 +1647,26 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
 	return conn;
 }
 
+static void l2cap_conn_free(struct kref *ref)
+{
+	struct l2cap_conn *conn = container_of(ref, struct l2cap_conn, ref);
+
+	hci_conn_put(conn->hcon);
+	kfree(conn);
+}
+
+void l2cap_conn_get(struct l2cap_conn *conn)
+{
+	kref_get(&conn->ref);
+}
+EXPORT_SYMBOL(l2cap_conn_get);
+
+void l2cap_conn_put(struct l2cap_conn *conn)
+{
+	kref_put(&conn->ref, l2cap_conn_free);
+}
+EXPORT_SYMBOL(l2cap_conn_put);
+
 /* ---- Socket interface ---- */
 
 /* Find socket with psm and source / destination bdaddr.
@@ -1695,9 +1804,9 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 		goto done;
 	}
 
-	conn = l2cap_conn_add(hcon, 0);
+	conn = l2cap_conn_add(hcon);
 	if (!conn) {
-		hci_conn_put(hcon);
+		hci_conn_drop(hcon);
 		err = -ENOMEM;
 		goto done;
 	}
@@ -1707,7 +1816,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 
 		if (!list_empty(&conn->chan_l)) {
 			err = -EBUSY;
-			hci_conn_put(hcon);
+			hci_conn_drop(hcon);
 		}
 
 		if (err)
@@ -6313,7 +6422,7 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
 	BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
 
 	if (!status) {
-		conn = l2cap_conn_add(hcon, status);
+		conn = l2cap_conn_add(hcon);
 		if (conn)
 			l2cap_conn_ready(conn);
 	} else {
@@ -6482,7 +6591,7 @@ int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
 		goto drop;
 
 	if (!conn)
-		conn = l2cap_conn_add(hcon, 0);
+		conn = l2cap_conn_add(hcon);
 
 	if (!conn)
 		goto drop;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 7f9704993b74..141e7b058b7e 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -43,6 +43,12 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent);
 static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
 				     int proto, gfp_t prio);
 
+bool l2cap_is_socket(struct socket *sock)
+{
+	return sock && sock->ops == &l2cap_sock_ops;
+}
+EXPORT_SYMBOL(l2cap_is_socket);
+
 static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
 {
 	struct sock *sk = sock->sk;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 03e7e732215f..4c830c62ef74 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -106,11 +106,10 @@ static const u16 mgmt_events[] = {
  * These LE scan and inquiry parameters were chosen according to LE General
  * Discovery Procedure specification.
  */
-#define LE_SCAN_TYPE			0x01
 #define LE_SCAN_WIN			0x12
 #define LE_SCAN_INT			0x12
-#define LE_SCAN_TIMEOUT_LE_ONLY		10240	/* TGAP(gen_disc_scan_min) */
-#define LE_SCAN_TIMEOUT_BREDR_LE	5120	/* TGAP(100)/2 */
+#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 */
@@ -2131,7 +2130,7 @@ static void pairing_complete(struct pending_cmd *cmd, u8 status)
 	conn->security_cfm_cb = NULL;
 	conn->disconn_cfm_cb = NULL;
 
-	hci_conn_put(conn);
+	hci_conn_drop(conn);
 
 	mgmt_pending_remove(cmd);
 }
@@ -2222,7 +2221,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 	}
 
 	if (conn->connect_cfm_cb) {
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 		err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
 				   MGMT_STATUS_BUSY, &rp, sizeof(rp));
 		goto unlock;
@@ -2231,7 +2230,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 	cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
 	if (!cmd) {
 		err = -ENOMEM;
-		hci_conn_put(conn);
+		hci_conn_drop(conn);
 		goto unlock;
 	}
 
@@ -2703,7 +2702,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 			goto failed;
 		}
 
-		err = hci_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT,
+		err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
 				  LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
 		break;
 
@@ -2715,8 +2714,8 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 			goto failed;
 		}
 
-		err = hci_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT, LE_SCAN_WIN,
-				  LE_SCAN_TIMEOUT_BREDR_LE);
+		err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
+				  LE_SCAN_WIN, LE_SCAN_TIMEOUT_BREDR_LE);
 		break;
 
 	default:
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 2c8055350510..373d81e6e8f0 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -83,7 +83,7 @@ static struct sco_conn *sco_conn_add(struct hci_conn *hcon)
 	if (conn)
 		return conn;
 
-	conn = kzalloc(sizeof(struct sco_conn), GFP_ATOMIC);
+	conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL);
 	if (!conn)
 		return NULL;
 
@@ -185,7 +185,7 @@ static int sco_connect(struct sock *sk)
 
 	conn = sco_conn_add(hcon);
 	if (!conn) {
-		hci_conn_put(hcon);
+		hci_conn_drop(hcon);
 		err = -ENOMEM;
 		goto done;
 	}
@@ -353,7 +353,7 @@ static void __sco_sock_close(struct sock *sk)
 		if (sco_pi(sk)->conn->hcon) {
 			sk->sk_state = BT_DISCONN;
 			sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
-			hci_conn_put(sco_pi(sk)->conn->hcon);
+			hci_conn_drop(sco_pi(sk)->conn->hcon);
 			sco_pi(sk)->conn->hcon = NULL;
 		} else
 			sco_chan_del(sk, ECONNRESET);
@@ -481,8 +481,7 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
 {
 	struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
 	struct sock *sk = sock->sk;
-	int err = 0;
-
+	int err;
 
 	BT_DBG("sk %p", sk);
 
@@ -653,6 +652,42 @@ static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 	return err;
 }
 
+static void sco_conn_defer_accept(struct hci_conn *conn, int mask)
+{
+	struct hci_dev *hdev = conn->hdev;
+
+	BT_DBG("conn %p", conn);
+
+	conn->state = BT_CONFIG;
+
+	if (!lmp_esco_capable(hdev)) {
+		struct hci_cp_accept_conn_req cp;
+
+		bacpy(&cp.bdaddr, &conn->dst);
+
+		if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
+			cp.role = 0x00; /* Become master */
+		else
+			cp.role = 0x01; /* Remain slave */
+
+		hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
+	} else {
+		struct hci_cp_accept_sync_conn_req cp;
+
+		bacpy(&cp.bdaddr, &conn->dst);
+		cp.pkt_type = cpu_to_le16(conn->pkt_type);
+
+		cp.tx_bandwidth   = __constant_cpu_to_le32(0x00001f40);
+		cp.rx_bandwidth   = __constant_cpu_to_le32(0x00001f40);
+		cp.max_latency    = __constant_cpu_to_le16(0xffff);
+		cp.content_format = cpu_to_le16(hdev->voice_setting);
+		cp.retrans_effort = 0xff;
+
+		hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
+			     sizeof(cp), &cp);
+	}
+}
+
 static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 			    struct msghdr *msg, size_t len, int flags)
 {
@@ -663,7 +698,7 @@ static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 
 	if (sk->sk_state == BT_CONNECT2 &&
 	    test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
-		hci_conn_accept(pi->conn->hcon, 0);
+		sco_conn_defer_accept(pi->conn->hcon, 0);
 		sk->sk_state = BT_CONFIG;
 		msg->msg_namelen = 0;
 
@@ -883,7 +918,7 @@ static void sco_chan_del(struct sock *sk, int err)
 		sco_conn_unlock(conn);
 
 		if (conn->hcon)
-			hci_conn_put(conn->hcon);
+			hci_conn_drop(conn->hcon);
 	}
 
 	sk->sk_state = BT_CLOSED;
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 5abefb12891d..b2296d3857a0 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -522,7 +522,7 @@ void smp_chan_destroy(struct l2cap_conn *conn)
 	kfree(smp);
 	conn->smp_chan = NULL;
 	conn->hcon->smp_conn = NULL;
-	hci_conn_put(conn->hcon);
+	hci_conn_drop(conn->hcon);
 }
 
 int smp_user_confirm_reply(struct hci_conn *hcon, u16 mgmt_op, __le32 passkey)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c50c19402588..1a89c80e6407 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -805,8 +805,7 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 					IEEE80211_CHANCTX_EXCLUSIVE);
 		}
 	} else if (local->open_count == local->monitors) {
-		local->_oper_channel = chandef->chan;
-		local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
+		local->_oper_chandef = *chandef;
 		ieee80211_hw_config(local, 0);
 	}
 
@@ -965,8 +964,13 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	sdata->vif.bss_conf.hidden_ssid =
 		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 
-	sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
-	sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
+	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
+	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
+	sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
+		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
+	if (params->p2p_opp_ps)
+		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
+					IEEE80211_P2P_OPPPS_ENABLE_BIT;
 
 	err = ieee80211_assign_beacon(sdata, &params->beacon);
 	if (err < 0)
@@ -1039,6 +1043,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 		sta_info_flush_defer(vlan);
 	sta_info_flush_defer(sdata);
+	synchronize_net();
 	rcu_barrier();
 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 		sta_info_flush_cleanup(vlan);
@@ -1048,6 +1053,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 	ieee80211_free_keys(sdata);
 
 	sdata->vif.bss_conf.enable_beacon = false;
+	sdata->vif.bss_conf.ssid_len = 0;
 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 
@@ -1536,7 +1542,6 @@ static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 	struct ieee80211_sub_if_data *sdata;
 	struct mesh_path *mpath;
 	struct sta_info *sta;
-	int err;
 
 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
@@ -1547,17 +1552,12 @@ static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 		return -ENOENT;
 	}
 
-	err = mesh_path_add(sdata, dst);
-	if (err) {
+	mpath = mesh_path_add(sdata, dst);
+	if (IS_ERR(mpath)) {
 		rcu_read_unlock();
-		return err;
+		return PTR_ERR(mpath);
 	}
 
-	mpath = mesh_path_lookup(sdata, dst);
-	if (!mpath) {
-		rcu_read_unlock();
-		return -ENXIO;
-	}
 	mesh_path_fix_nexthop(mpath, sta);
 
 	rcu_read_unlock();
@@ -1961,12 +1961,20 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
 	}
 
 	if (params->p2p_ctwindow >= 0) {
-		sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
+		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
+					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
+		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
+			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 		changed |= BSS_CHANGED_P2P_PS;
 	}
 
-	if (params->p2p_opp_ps >= 0) {
-		sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
+	if (params->p2p_opp_ps > 0) {
+		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
+					IEEE80211_P2P_OPPPS_ENABLE_BIT;
+		changed |= BSS_CHANGED_P2P_PS;
+	} else if (params->p2p_opp_ps == 0) {
+		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
+					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
 		changed |= BSS_CHANGED_P2P_PS;
 	}
 
@@ -2410,9 +2418,22 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
 	}
 
 	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+		struct ieee80211_supported_band *sband = wiphy->bands[i];
+		int j;
+
 		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
 		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
 		       sizeof(mask->control[i].mcs));
+
+		sdata->rc_has_mcs_mask[i] = false;
+		if (!sband)
+			continue;
+
+		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
+			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
+				sdata->rc_has_mcs_mask[i] = true;
+				break;
+			}
 	}
 
 	return 0;
@@ -3362,9 +3383,7 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
 		if (local->use_chanctx)
 			*chandef = local->monitor_chandef;
 		else
-			cfg80211_chandef_create(chandef,
-						local->_oper_channel,
-						local->_oper_channel_type);
+			*chandef = local->_oper_chandef;
 		ret = 0;
 	}
 	rcu_read_unlock();
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 931be419ab5a..03e8d2e3270e 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -22,7 +22,7 @@ static void ieee80211_change_chanctx(struct ieee80211_local *local,
 	drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_WIDTH);
 
 	if (!local->use_chanctx) {
-		local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
+		local->_oper_chandef = *chandef;
 		ieee80211_hw_config(local, 0);
 	}
 }
@@ -57,6 +57,22 @@ ieee80211_find_chanctx(struct ieee80211_local *local,
 	return NULL;
 }
 
+static bool ieee80211_is_radar_required(struct ieee80211_local *local)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (sdata->radar_required) {
+			rcu_read_unlock();
+			return true;
+		}
+	}
+	rcu_read_unlock();
+
+	return false;
+}
+
 static struct ieee80211_chanctx *
 ieee80211_new_chanctx(struct ieee80211_local *local,
 		      const struct cfg80211_chan_def *chandef,
@@ -76,6 +92,9 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 	ctx->conf.rx_chains_static = 1;
 	ctx->conf.rx_chains_dynamic = 1;
 	ctx->mode = mode;
+	ctx->conf.radar_enabled = ieee80211_is_radar_required(local);
+	if (!local->use_chanctx)
+		local->hw.conf.radar_enabled = ctx->conf.radar_enabled;
 
 	/* acquire mutex to prevent idle from changing */
 	mutex_lock(&local->mtx);
@@ -85,9 +104,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 		ieee80211_hw_config(local, changed);
 
 	if (!local->use_chanctx) {
-		local->_oper_channel_type =
-			cfg80211_get_chandef_type(chandef);
-		local->_oper_channel = chandef->chan;
+		local->_oper_chandef = *chandef;
 		ieee80211_hw_config(local, 0);
 	} else {
 		err = drv_add_chanctx(local, ctx);
@@ -112,12 +129,24 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
 static void ieee80211_free_chanctx(struct ieee80211_local *local,
 				   struct ieee80211_chanctx *ctx)
 {
+	bool check_single_channel = false;
 	lockdep_assert_held(&local->chanctx_mtx);
 
 	WARN_ON_ONCE(ctx->refcount != 0);
 
 	if (!local->use_chanctx) {
-		local->_oper_channel_type = NL80211_CHAN_NO_HT;
+		struct cfg80211_chan_def *chandef = &local->_oper_chandef;
+		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+		chandef->center_freq1 = chandef->chan->center_freq;
+		chandef->center_freq2 = 0;
+
+		/* NOTE: Disabling radar is only valid here for
+		 * single channel context. To be sure, check it ...
+		 */
+		if (local->hw.conf.radar_enabled)
+			check_single_channel = true;
+		local->hw.conf.radar_enabled = false;
+
 		ieee80211_hw_config(local, 0);
 	} else {
 		drv_remove_chanctx(local, ctx);
@@ -126,6 +155,9 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local,
 	list_del_rcu(&ctx->list);
 	kfree_rcu(ctx, rcu_head);
 
+	/* throw a warning if this wasn't the only channel context. */
+	WARN_ON(check_single_channel && !list_empty(&local->chanctx_list));
+
 	mutex_lock(&local->mtx);
 	ieee80211_recalc_idle(local);
 	mutex_unlock(&local->mtx);
@@ -237,19 +269,11 @@ static void __ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata)
 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
 				    struct ieee80211_chanctx *chanctx)
 {
-	struct ieee80211_sub_if_data *sdata;
-	bool radar_enabled = false;
+	bool radar_enabled;
 
 	lockdep_assert_held(&local->chanctx_mtx);
 
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-		if (sdata->radar_required) {
-			radar_enabled = true;
-			break;
-		}
-	}
-	rcu_read_unlock();
+	radar_enabled = ieee80211_is_radar_required(local);
 
 	if (radar_enabled == chanctx->conf.radar_enabled)
 		return;
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index ddb426867904..14abcf44f974 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -124,6 +124,15 @@ static ssize_t ieee80211_if_fmt_##name(					\
 	return scnprintf(buf, buflen, "%d\n", sdata->field / 16);	\
 }
 
+#define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, field)			\
+static ssize_t ieee80211_if_fmt_##name(					\
+	const struct ieee80211_sub_if_data *sdata,			\
+	char *buf, int buflen)						\
+{									\
+	return scnprintf(buf, buflen, "%d\n",				\
+			 jiffies_to_msecs(sdata->field));		\
+}
+
 #define __IEEE80211_IF_FILE(name, _write)				\
 static ssize_t ieee80211_if_read_##name(struct file *file,		\
 					char __user *userbuf,		\
@@ -197,6 +206,7 @@ IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
 IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
 IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
+IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS);
 
 static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
 			      enum ieee80211_smps_mode smps_mode)
@@ -542,6 +552,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
 	DEBUGFS_ADD(aid);
 	DEBUGFS_ADD(last_beacon);
 	DEBUGFS_ADD(ave_beacon);
+	DEBUGFS_ADD(beacon_timeout);
 	DEBUGFS_ADD_MODE(smps, 0600);
 	DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 	DEBUGFS_ADD_MODE(uapsd_queues, 0600);
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 4f841fe559df..44e201d60a13 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -54,6 +54,7 @@ STA_FILE(aid, sta.aid, D);
 STA_FILE(dev, sdata->name, S);
 STA_FILE(last_signal, last_signal, D);
 STA_FILE(last_ack_signal, last_ack_signal, D);
+STA_FILE(beacon_loss_count, beacon_loss_count, D);
 
 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 			      size_t count, loff_t *ppos)
@@ -434,6 +435,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
 	DEBUGFS_ADD(agg_status);
 	DEBUGFS_ADD(dev);
 	DEBUGFS_ADD(last_signal);
+	DEBUGFS_ADD(beacon_loss_count);
 	DEBUGFS_ADD(ht_capa);
 	DEBUGFS_ADD(vht_capa);
 	DEBUGFS_ADD(last_ack_signal);
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 539d4a11b47b..170f9a7fa319 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -44,7 +44,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
 	int rates, i;
-	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	u8 *pos;
 	struct ieee80211_supported_band *sband;
@@ -52,20 +51,14 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	u32 bss_change;
 	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 	struct cfg80211_chan_def chandef;
+	struct beacon_data *presp;
+	int frame_len;
 
 	lockdep_assert_held(&ifibss->mtx);
 
 	/* Reset own TSF to allow time synchronization work. */
 	drv_reset_tsf(local, sdata);
 
-	skb = ifibss->skb;
-	RCU_INIT_POINTER(ifibss->presp, NULL);
-	synchronize_rcu();
-	skb->data = skb->head;
-	skb->len = 0;
-	skb_reset_tail_pointer(skb);
-	skb_reserve(skb, sdata->local->hw.extra_tx_headroom);
-
 	if (!ether_addr_equal(ifibss->bssid, bssid))
 		sta_info_flush(sdata);
 
@@ -73,10 +66,19 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	if (sdata->vif.bss_conf.ibss_joined) {
 		sdata->vif.bss_conf.ibss_joined = false;
 		sdata->vif.bss_conf.ibss_creator = false;
+		sdata->vif.bss_conf.enable_beacon = false;
 		netif_carrier_off(sdata->dev);
-		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS);
+		ieee80211_bss_info_change_notify(sdata,
+						 BSS_CHANGED_IBSS |
+						 BSS_CHANGED_BEACON_ENABLED);
 	}
 
+	presp = rcu_dereference_protected(ifibss->presp,
+					  lockdep_is_held(&ifibss->mtx));
+	rcu_assign_pointer(ifibss->presp, NULL);
+	if (presp)
+		kfree_rcu(presp, rcu_head);
+
 	sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 
 	cfg80211_chandef_create(&chandef, chan, ifibss->channel_type);
@@ -98,19 +100,24 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	sband = local->hw.wiphy->bands[chan->band];
 
-	/* build supported rates array */
-	pos = supp_rates;
-	for (i = 0; i < sband->n_bitrates; i++) {
-		int rate = sband->bitrates[i].bitrate;
-		u8 basic = 0;
-		if (basic_rates & BIT(i))
-			basic = 0x80;
-		*pos++ = basic | (u8) (rate / 5);
-	}
-
 	/* Build IBSS probe response */
-	mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon));
-	memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+	frame_len = sizeof(struct ieee80211_hdr_3addr) +
+		    12 /* struct ieee80211_mgmt.u.beacon */ +
+		    2 + IEEE80211_MAX_SSID_LEN /* max SSID */ +
+		    2 + 8 /* max Supported Rates */ +
+		    3 /* max DS params */ +
+		    4 /* IBSS params */ +
+		    2 + (IEEE80211_MAX_SUPP_RATES - 8) +
+		    2 + sizeof(struct ieee80211_ht_cap) +
+		    2 + sizeof(struct ieee80211_ht_operation) +
+		    ifibss->ie_len;
+	presp = kzalloc(sizeof(*presp) + frame_len, GFP_KERNEL);
+	if (!presp)
+		return;
+
+	presp->head = (void *)(presp + 1);
+
+	mgmt = (void *) presp->head;
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_PROBE_RESP);
 	eth_broadcast_addr(mgmt->da);
@@ -120,27 +127,30 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	mgmt->u.beacon.timestamp = cpu_to_le64(tsf);
 	mgmt->u.beacon.capab_info = cpu_to_le16(capability);
 
-	pos = skb_put(skb, 2 + ifibss->ssid_len);
+	pos = (u8 *)mgmt + offsetof(struct ieee80211_mgmt, u.beacon.variable);
+
 	*pos++ = WLAN_EID_SSID;
 	*pos++ = ifibss->ssid_len;
 	memcpy(pos, ifibss->ssid, ifibss->ssid_len);
+	pos += ifibss->ssid_len;
 
-	rates = sband->n_bitrates;
-	if (rates > 8)
-		rates = 8;
-	pos = skb_put(skb, 2 + rates);
+	rates = min_t(int, 8, sband->n_bitrates);
 	*pos++ = WLAN_EID_SUPP_RATES;
 	*pos++ = rates;
-	memcpy(pos, supp_rates, rates);
+	for (i = 0; i < rates; i++) {
+		int rate = sband->bitrates[i].bitrate;
+		u8 basic = 0;
+		if (basic_rates & BIT(i))
+			basic = 0x80;
+		*pos++ = basic | (u8) (rate / 5);
+	}
 
 	if (sband->band == IEEE80211_BAND_2GHZ) {
-		pos = skb_put(skb, 2 + 1);
 		*pos++ = WLAN_EID_DS_PARAMS;
 		*pos++ = 1;
 		*pos++ = ieee80211_frequency_to_channel(chan->center_freq);
 	}
 
-	pos = skb_put(skb, 2 + 2);
 	*pos++ = WLAN_EID_IBSS_PARAMS;
 	*pos++ = 2;
 	/* FIX: set ATIM window based on scan results */
@@ -148,23 +158,25 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	*pos++ = 0;
 
 	if (sband->n_bitrates > 8) {
-		rates = sband->n_bitrates - 8;
-		pos = skb_put(skb, 2 + rates);
 		*pos++ = WLAN_EID_EXT_SUPP_RATES;
-		*pos++ = rates;
-		memcpy(pos, &supp_rates[8], rates);
+		*pos++ = sband->n_bitrates - 8;
+		for (i = 8; i < sband->n_bitrates; i++) {
+			int rate = sband->bitrates[i].bitrate;
+			u8 basic = 0;
+			if (basic_rates & BIT(i))
+				basic = 0x80;
+			*pos++ = basic | (u8) (rate / 5);
+		}
 	}
 
-	if (ifibss->ie_len)
-		memcpy(skb_put(skb, ifibss->ie_len),
-		       ifibss->ie, ifibss->ie_len);
+	if (ifibss->ie_len) {
+		memcpy(pos, ifibss->ie, ifibss->ie_len);
+		pos += ifibss->ie_len;
+	}
 
 	/* add HT capability and information IEs */
 	if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
 	    sband->ht_cap.ht_supported) {
-		pos = skb_put(skb, 4 +
-				   sizeof(struct ieee80211_ht_cap) +
-				   sizeof(struct ieee80211_ht_operation));
 		pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
 						sband->ht_cap.cap);
 		/*
@@ -177,7 +189,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (local->hw.queues >= IEEE80211_NUM_ACS) {
-		pos = skb_put(skb, 9);
 		*pos++ = WLAN_EID_VENDOR_SPECIFIC;
 		*pos++ = 7; /* len */
 		*pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
@@ -189,11 +200,17 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 		*pos++ = 0; /* U-APSD no in use */
 	}
 
-	rcu_assign_pointer(ifibss->presp, skb);
+	presp->head_len = pos - presp->head;
+	if (WARN_ON(presp->head_len > frame_len))
+		return;
+
+	rcu_assign_pointer(ifibss->presp, presp);
 
 	sdata->vif.bss_conf.enable_beacon = true;
 	sdata->vif.bss_conf.beacon_int = beacon_int;
 	sdata->vif.bss_conf.basic_rates = basic_rates;
+	sdata->vif.bss_conf.ssid_len = ifibss->ssid_len;
+	memcpy(sdata->vif.bss_conf.ssid, ifibss->ssid, ifibss->ssid_len);
 	bss_change = BSS_CHANGED_BEACON_INT;
 	bss_change |= ieee80211_reset_erp_info(sdata);
 	bss_change |= BSS_CHANGED_BSSID;
@@ -202,6 +219,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	bss_change |= BSS_CHANGED_BASIC_RATES;
 	bss_change |= BSS_CHANGED_HT;
 	bss_change |= BSS_CHANGED_IBSS;
+	bss_change |= BSS_CHANGED_SSID;
 
 	/*
 	 * In 5 GHz/802.11a, we can always use short slot time.
@@ -227,7 +245,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 		  round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
 
 	bss = cfg80211_inform_bss_frame(local->hw.wiphy, chan,
-					mgmt, skb->len, 0, GFP_KERNEL);
+					mgmt, presp->head_len, 0, GFP_KERNEL);
 	cfg80211_put_bss(local->hw.wiphy, bss);
 	netif_carrier_on(sdata->dev);
 	cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL);
@@ -448,7 +466,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
 	bool rates_updated = false;
 
-	if (elems->ds_params && elems->ds_params_len == 1)
+	if (elems->ds_params)
 		freq = ieee80211_channel_to_frequency(elems->ds_params[0],
 						      band);
 	else
@@ -822,8 +840,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	int tx_last_beacon, len = req->len;
 	struct sk_buff *skb;
-	struct ieee80211_mgmt *resp;
-	struct sk_buff *presp;
+	struct beacon_data *presp;
 	u8 *pos, *end;
 
 	lockdep_assert_held(&ifibss->mtx);
@@ -864,13 +881,15 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
 	}
 
 	/* Reply with ProbeResp */
-	skb = skb_copy(presp, GFP_KERNEL);
+	skb = dev_alloc_skb(local->tx_headroom + presp->head_len);
 	if (!skb)
 		return;
 
-	resp = (struct ieee80211_mgmt *) skb->data;
-	memcpy(resp->da, mgmt->sa, ETH_ALEN);
-	ibss_dbg(sdata, "Sending ProbeResp to %pM\n", resp->da);
+	skb_reserve(skb, local->tx_headroom);
+	memcpy(skb_put(skb, presp->head_len), presp->head, presp->head_len);
+
+	memcpy(((struct ieee80211_mgmt *) skb->data)->da, mgmt->sa, ETH_ALEN);
+	ibss_dbg(sdata, "Sending ProbeResp to %pM\n", mgmt->sa);
 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
 	ieee80211_tx_skb(sdata, skb);
 }
@@ -895,7 +914,7 @@ void ieee80211_rx_mgmt_probe_beacon(struct ieee80211_sub_if_data *sdata,
 		return;
 
 	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
-				&elems);
+			       false, &elems);
 
 	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 }
@@ -1020,23 +1039,8 @@ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 			struct cfg80211_ibss_params *params)
 {
-	struct sk_buff *skb;
 	u32 changed = 0;
 
-	skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom +
-			    sizeof(struct ieee80211_hdr_3addr) +
-			    12 /* struct ieee80211_mgmt.u.beacon */ +
-			    2 + IEEE80211_MAX_SSID_LEN /* max SSID */ +
-			    2 + 8 /* max Supported Rates */ +
-			    3 /* max DS params */ +
-			    4 /* IBSS params */ +
-			    2 + (IEEE80211_MAX_SUPP_RATES - 8) +
-			    2 + sizeof(struct ieee80211_ht_cap) +
-			    2 + sizeof(struct ieee80211_ht_operation) +
-			    params->ie_len);
-	if (!skb)
-		return -ENOMEM;
-
 	mutex_lock(&sdata->u.ibss.mtx);
 
 	if (params->bssid) {
@@ -1065,7 +1069,6 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 			sdata->u.ibss.ie_len = params->ie_len;
 	}
 
-	sdata->u.ibss.skb = skb;
 	sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
 	sdata->u.ibss.ibss_join_req = jiffies;
 
@@ -1101,13 +1104,13 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 
 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 {
-	struct sk_buff *skb;
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
 	struct cfg80211_bss *cbss;
 	u16 capability;
 	int active_ibss;
 	struct sta_info *sta;
+	struct beacon_data *presp;
 
 	mutex_lock(&sdata->u.ibss.mtx);
 
@@ -1153,17 +1156,18 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 
 	/* remove beacon */
 	kfree(sdata->u.ibss.ie);
-	skb = rcu_dereference_protected(sdata->u.ibss.presp,
-					lockdep_is_held(&sdata->u.ibss.mtx));
+	presp = rcu_dereference_protected(ifibss->presp,
+					  lockdep_is_held(&sdata->u.ibss.mtx));
 	RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
 	sdata->vif.bss_conf.ibss_joined = false;
 	sdata->vif.bss_conf.ibss_creator = false;
 	sdata->vif.bss_conf.enable_beacon = false;
+	sdata->vif.bss_conf.ssid_len = 0;
 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 						BSS_CHANGED_IBSS);
 	synchronize_rcu();
-	kfree_skb(skb);
+	kfree(presp);
 
 	skb_queue_purge(&sdata->skb_queue);
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 0b09716d22ad..158e6eb188d3 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -156,6 +156,7 @@ struct ieee80211_tx_data {
 	struct ieee80211_sub_if_data *sdata;
 	struct sta_info *sta;
 	struct ieee80211_key *key;
+	struct ieee80211_tx_rate rate;
 
 	unsigned int flags;
 };
@@ -443,7 +444,7 @@ struct ieee80211_if_managed {
 
 	u8 use_4addr;
 
-	u8 p2p_noa_index;
+	s16 p2p_noa_index;
 
 	/* Signal strength from the last Beacon frame in the current BSS. */
 	int last_beacon_signal;
@@ -509,8 +510,7 @@ struct ieee80211_if_ibss {
 
 	unsigned long ibss_join_req;
 	/* probe response/beacon for IBSS */
-	struct sk_buff __rcu *presp;
-	struct sk_buff *skb;
+	struct beacon_data __rcu *presp;
 
 	spinlock_t incomplete_lock;
 	struct list_head incomplete_stations;
@@ -741,6 +741,8 @@ struct ieee80211_sub_if_data {
 
 	/* bitmap of allowed (non-MCS) rate indexes for rate control */
 	u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
+
+	bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
 	u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
 
 	union {
@@ -1021,10 +1023,9 @@ struct ieee80211_local {
 	enum mac80211_scan_state next_scan_state;
 	struct delayed_work scan_work;
 	struct ieee80211_sub_if_data __rcu *scan_sdata;
-	struct ieee80211_channel *csa_channel;
+	struct cfg80211_chan_def csa_chandef;
 	/* For backward compatibility only -- do not use */
-	struct ieee80211_channel *_oper_channel;
-	enum nl80211_channel_type _oper_channel_type;
+	struct cfg80211_chan_def _oper_chandef;
 
 	/* Temporary remain-on-channel for off-channel operations */
 	struct ieee80211_channel *tmp_channel;
@@ -1160,11 +1161,8 @@ struct ieee802_11_elems {
 	/* pointers to IEs */
 	const u8 *ssid;
 	const u8 *supp_rates;
-	const u8 *fh_params;
 	const u8 *ds_params;
-	const u8 *cf_params;
 	const struct ieee80211_tim_ie *tim;
-	const u8 *ibss_params;
 	const u8 *challenge;
 	const u8 *rsn;
 	const u8 *erp_info;
@@ -1184,23 +1182,20 @@ struct ieee802_11_elems {
 	const u8 *perr;
 	const struct ieee80211_rann_ie *rann;
 	const struct ieee80211_channel_sw_ie *ch_switch_ie;
+	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
+	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
 	const u8 *country_elem;
 	const u8 *pwr_constr_elem;
-	const u8 *quiet_elem;	/* first quite element */
-	const u8 *timeout_int;
+	const struct ieee80211_timeout_interval_ie *timeout_int;
 	const u8 *opmode_notif;
+	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
 
 	/* length of them, respectively */
 	u8 ssid_len;
 	u8 supp_rates_len;
-	u8 fh_params_len;
-	u8 ds_params_len;
-	u8 cf_params_len;
 	u8 tim_len;
-	u8 ibss_params_len;
 	u8 challenge_len;
 	u8 rsn_len;
-	u8 erp_info_len;
 	u8 ext_supp_rates_len;
 	u8 wmm_info_len;
 	u8 wmm_param_len;
@@ -1210,9 +1205,6 @@ struct ieee802_11_elems {
 	u8 prep_len;
 	u8 perr_len;
 	u8 country_elem_len;
-	u8 quiet_elem_len;
-	u8 num_of_quiet_elem;	/* can be more the one */
-	u8 timeout_int_len;
 
 	/* whether a parse error occurred while retrieving these elements */
 	bool parse_error;
@@ -1267,10 +1259,6 @@ void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
 int ieee80211_max_network_latency(struct notifier_block *nb,
 				  unsigned long data, void *dummy);
 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
-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);
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 				  struct sk_buff *skb);
@@ -1330,7 +1318,8 @@ void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
 void ieee80211_offchannel_return(struct ieee80211_local *local);
 void ieee80211_roc_setup(struct ieee80211_local *local);
 void ieee80211_start_next_roc(struct ieee80211_local *local);
-void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
+void ieee80211_roc_purge(struct ieee80211_local *local,
+			 struct ieee80211_sub_if_data *sdata);
 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
 void ieee80211_sw_roc_work(struct work_struct *work);
 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
@@ -1351,6 +1340,8 @@ void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
 				    const int offset);
 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
+int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
+void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
 
 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
@@ -1505,11 +1496,15 @@ static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
 	ieee80211_tx_skb_tid(sdata, skb, 7);
 }
 
-void ieee802_11_parse_elems(u8 *start, size_t len,
-			    struct ieee802_11_elems *elems);
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
+u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action,
 			       struct ieee802_11_elems *elems,
 			       u64 filter, u32 crc);
+static inline void ieee802_11_parse_elems(u8 *start, size_t len, bool action,
+					  struct ieee802_11_elems *elems)
+{
+	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
+}
+
 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
 			      enum ieee80211_band band);
 
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index e8a260f53c16..60f1ce5e5e52 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1,5 +1,5 @@
 /*
- * Interface handling (except master interface)
+ * Interface handling
  *
  * Copyright 2002-2005, Instant802 Networks, Inc.
  * Copyright 2005-2006, Devicescape Software, Inc.
@@ -357,7 +357,7 @@ static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata)
 	sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE;
 }
 
-static int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
+int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata;
 	int ret;
@@ -410,7 +410,7 @@ static int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
 	return 0;
 }
 
-static void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
+void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata;
 
@@ -595,7 +595,8 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		case NL80211_IFTYPE_P2P_DEVICE:
 			break;
 		default:
-			netif_carrier_on(dev);
+			/* not reached */
+			WARN_ON(1);
 		}
 
 		/*
@@ -652,8 +653,28 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 
 	ieee80211_recalc_ps(local, -1);
 
-	if (dev)
-		netif_tx_start_all_queues(dev);
+	if (dev) {
+		unsigned long flags;
+		int n_acs = IEEE80211_NUM_ACS;
+		int ac;
+
+		if (local->hw.queues < IEEE80211_NUM_ACS)
+			n_acs = 1;
+
+		spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+		if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE ||
+		    (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 &&
+		     skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) {
+			for (ac = 0; ac < n_acs; ac++) {
+				int ac_queue = sdata->vif.hw_queue[ac];
+
+				if (local->queue_stop_reasons[ac_queue] == 0 &&
+				    skb_queue_empty(&local->pending[ac_queue]))
+					netif_start_subqueue(dev, ac);
+			}
+		}
+		spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+	}
 
 	return 0;
  err_del_interface:
@@ -707,7 +728,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	if (sdata->dev)
 		netif_tx_stop_all_queues(sdata->dev);
 
-	ieee80211_roc_purge(sdata);
+	ieee80211_roc_purge(local, sdata);
 
 	if (sdata->vif.type == NL80211_IFTYPE_STATION)
 		ieee80211_mgd_stop(sdata);
@@ -732,12 +753,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) ||
 		     (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1));
 
-	/*
-	 * Don't count this interface for promisc/allmulti while it
-	 * is down. dev_mc_unsync() will invoke set_multicast_list
-	 * on the master interface which will sync these down to the
-	 * hardware as filter flags.
-	 */
+	/* don't count this interface for promisc/allmulti while it is down */
 	if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
 		atomic_dec(&local->iff_allmultis);
 
@@ -758,8 +774,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 				 sdata->dev->addr_len);
 		spin_unlock_bh(&local->filter_lock);
 		netif_addr_unlock_bh(sdata->dev);
-
-		ieee80211_configure_filter(local);
 	}
 
 	del_timer_sync(&local->dynamic_ps_timer);
@@ -770,6 +784,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 
 	if (sdata->wdev.cac_started) {
+		WARN_ON(local->suspended);
 		mutex_lock(&local->iflist_mtx);
 		ieee80211_vif_release_channel(sdata);
 		mutex_unlock(&local->iflist_mtx);
@@ -820,14 +835,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		if (local->monitors == 0) {
 			local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR;
 			hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
-			ieee80211_del_virtual_monitor(local);
 		}
 
 		ieee80211_adjust_monitor_flags(sdata, -1);
-		ieee80211_configure_filter(local);
-		mutex_lock(&local->mtx);
-		ieee80211_recalc_idle(local);
-		mutex_unlock(&local->mtx);
 		break;
 	case NL80211_IFTYPE_P2P_DEVICE:
 		/* relies on synchronize_rcu() below */
@@ -840,11 +850,12 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		 *
 		 * sta_info_flush_cleanup() requires rcu_barrier()
 		 * first to wait for the station call_rcu() calls
-		 * to complete, here we need at least sychronize_rcu()
-		 * it to wait for the RX path in case it is using the
+		 * to complete, and we also need synchronize_rcu()
+		 * to wait for the RX path in case it is using the
 		 * interface and enqueuing frames at this very time on
 		 * another CPU.
 		 */
+		synchronize_rcu();
 		rcu_barrier();
 		sta_info_flush_cleanup(sdata);
 
@@ -857,27 +868,10 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 		/* fall through */
 	case NL80211_IFTYPE_AP:
 		skb_queue_purge(&sdata->skb_queue);
-
-		if (going_down)
-			drv_remove_interface(local, sdata);
 	}
 
 	sdata->bss = NULL;
 
-	ieee80211_recalc_ps(local, -1);
-
-	if (local->open_count == 0) {
-		ieee80211_clear_tx_pending(local);
-		ieee80211_stop_device(local);
-
-		/* no reconfiguring after stop! */
-		hw_reconf_flags = 0;
-	}
-
-	/* do after stop to avoid reconfiguring when we stop anyway */
-	if (hw_reconf_flags)
-		ieee80211_hw_config(local, hw_reconf_flags);
-
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
 		skb_queue_walk_safe(&local->pending[i], skb, tmp) {
@@ -890,7 +884,54 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	}
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 
-	if (local->monitors == local->open_count && local->monitors > 0)
+	if (local->open_count == 0)
+		ieee80211_clear_tx_pending(local);
+
+	/*
+	 * If the interface goes down while suspended, presumably because
+	 * the device was unplugged and that happens before our resume,
+	 * then the driver is already unconfigured and the remainder of
+	 * this function isn't needed.
+	 * XXX: what about WoWLAN? If the device has software state, e.g.
+	 *	memory allocated, it might expect teardown commands from
+	 *	mac80211 here?
+	 */
+	if (local->suspended) {
+		WARN_ON(local->wowlan);
+		WARN_ON(rtnl_dereference(local->monitor_sdata));
+		return;
+	}
+
+	switch (sdata->vif.type) {
+	case NL80211_IFTYPE_AP_VLAN:
+		break;
+	case NL80211_IFTYPE_MONITOR:
+		if (local->monitors == 0)
+			ieee80211_del_virtual_monitor(local);
+
+		mutex_lock(&local->mtx);
+		ieee80211_recalc_idle(local);
+		mutex_unlock(&local->mtx);
+		break;
+	default:
+		if (going_down)
+			drv_remove_interface(local, sdata);
+	}
+
+	ieee80211_recalc_ps(local, -1);
+
+	if (local->open_count == 0) {
+		ieee80211_stop_device(local);
+
+		/* no reconfiguring after stop! */
+		return;
+	}
+
+	/* do after stop to avoid reconfiguring when we stop anyway */
+	ieee80211_configure_filter(local);
+	ieee80211_hw_config(local, hw_reconf_flags);
+
+	if (local->monitors == local->open_count)
 		ieee80211_add_virtual_monitor(local);
 }
 
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index c6f81ecc36a1..8a7bfc47d577 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -95,42 +95,47 @@ static void ieee80211_reconfig_filter(struct work_struct *work)
 static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata;
-	struct ieee80211_channel *chan;
+	struct cfg80211_chan_def chandef = {};
 	u32 changed = 0;
 	int power;
-	enum nl80211_channel_type channel_type;
 	u32 offchannel_flag;
 
 	offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
+
 	if (local->scan_channel) {
-		chan = local->scan_channel;
+		chandef.chan = local->scan_channel;
 		/* If scanning on oper channel, use whatever channel-type
 		 * is currently in use.
 		 */
-		if (chan == local->_oper_channel)
-			channel_type = local->_oper_channel_type;
-		else
-			channel_type = NL80211_CHAN_NO_HT;
+		if (chandef.chan == local->_oper_chandef.chan) {
+			chandef = local->_oper_chandef;
+		} else {
+			chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+			chandef.center_freq1 = chandef.chan->center_freq;
+		}
 	} else if (local->tmp_channel) {
-		chan = local->tmp_channel;
-		channel_type = NL80211_CHAN_NO_HT;
-	} else {
-		chan = local->_oper_channel;
-		channel_type = local->_oper_channel_type;
-	}
-
-	if (chan != local->_oper_channel ||
-	    channel_type != local->_oper_channel_type)
+		chandef.chan = local->tmp_channel;
+		chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+		chandef.center_freq1 = chandef.chan->center_freq;
+	} else
+		chandef = local->_oper_chandef;
+
+	WARN(!cfg80211_chandef_valid(&chandef),
+	     "control:%d MHz width:%d center: %d/%d MHz",
+	     chandef.chan->center_freq, chandef.width,
+	     chandef.center_freq1, chandef.center_freq2);
+
+	if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
 		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
 	else
 		local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
 
 	offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
 
-	if (offchannel_flag || chan != local->hw.conf.channel ||
-	    channel_type != local->hw.conf.channel_type) {
-		local->hw.conf.channel = chan;
-		local->hw.conf.channel_type = channel_type;
+	if (offchannel_flag ||
+	    !cfg80211_chandef_identical(&local->hw.conf.chandef,
+					&local->_oper_chandef)) {
+		local->hw.conf.chandef = chandef;
 		changed |= IEEE80211_CONF_CHANGE_CHANNEL;
 	}
 
@@ -146,7 +151,7 @@ static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
 		changed |= IEEE80211_CONF_CHANGE_SMPS;
 	}
 
-	power = chan->max_power;
+	power = chandef.chan->max_power;
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
@@ -587,6 +592,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 					 IEEE80211_RADIOTAP_MCS_HAVE_BW;
 	local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
 					 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
+	local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
+	local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
 	local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
 	wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
 	wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
@@ -661,6 +668,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	int channels, max_bitrates;
 	bool supp_ht, supp_vht;
 	netdev_features_t feature_whitelist;
+	struct cfg80211_chan_def dflt_chandef = {};
 	static const u32 cipher_suites[] = {
 		/* keep WEP first, it may be removed below */
 		WLAN_CIPHER_SUITE_WEP40,
@@ -738,15 +746,19 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 		sband = local->hw.wiphy->bands[band];
 		if (!sband)
 			continue;
-		if (!local->use_chanctx && !local->_oper_channel) {
+
+		if (!dflt_chandef.chan) {
+			cfg80211_chandef_create(&dflt_chandef,
+						&sband->channels[0],
+						NL80211_CHAN_NO_HT);
 			/* init channel we're on */
-			local->hw.conf.channel =
-			local->_oper_channel = &sband->channels[0];
-			local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
+			if (!local->use_chanctx && !local->_oper_chandef.chan) {
+				local->hw.conf.chandef = dflt_chandef;
+				local->_oper_chandef = dflt_chandef;
+			}
+			local->monitor_chandef = dflt_chandef;
 		}
-		cfg80211_chandef_create(&local->monitor_chandef,
-					&sband->channels[0],
-					NL80211_CHAN_NO_HT);
+
 		channels += sband->n_channels;
 
 		if (max_bitrates < sband->n_bitrates)
@@ -829,22 +841,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (supp_ht)
 		local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
 
-	if (supp_vht) {
+	if (supp_vht)
 		local->scan_ies_len +=
 			2 + sizeof(struct ieee80211_vht_cap);
 
-		/*
-		 * (for now at least), drivers wanting to use VHT must
-		 * support channel contexts, as they contain all the
-		 * necessary VHT information and the global hw config
-		 * doesn't (yet)
-		 */
-		if (WARN_ON(!local->use_chanctx)) {
-			result = -EINVAL;
-			goto fail_wiphy_register;
-		}
-	}
-
 	if (!local->ops->hw_scan) {
 		/* For hw_scan, driver needs to set these up. */
 		local->hw.wiphy->max_scan_ssids = 4;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 123a300cef57..6952760881c8 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -838,7 +838,7 @@ ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data *sdata,
 	if (baselen > len)
 		return;
 
-	ieee802_11_parse_elems(pos, len - baselen, &elems);
+	ieee802_11_parse_elems(pos, len - baselen, false, &elems);
 
 	/* 802.11-2012 10.1.4.3.2 */
 	if ((!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
@@ -899,7 +899,7 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
 		return;
 
 	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
-			       &elems);
+			       false, &elems);
 
 	/* ignore non-mesh or secure / unsecure mismatch */
 	if ((!elems.mesh_id || !elems.mesh_config) ||
@@ -907,7 +907,7 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
 	    (!elems.rsn && sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE))
 		return;
 
-	if (elems.ds_params && elems.ds_params_len == 1)
+	if (elems.ds_params)
 		freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
 	else
 		freq = rx_status->freq;
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 6ffabbe99c46..da158774eebb 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -275,7 +275,8 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
 void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
 void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
 			    struct ieee80211_mgmt *mgmt, size_t len);
-int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
+struct mesh_path *
+mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
 
 int mesh_path_add_gate(struct mesh_path *mpath);
 int mesh_path_send_to_gates(struct mesh_path *mpath);
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index bdb8d3b14587..486819cd02cd 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -144,7 +144,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
 		*pos++ = WLAN_EID_PREQ;
 		break;
 	case MPATH_PREP:
-		mhwmp_dbg(sdata, "sending PREP to %pM\n", target);
+		mhwmp_dbg(sdata, "sending PREP to %pM\n", orig_addr);
 		ie_len = 31;
 		pos = skb_put(skb, 2 + ie_len);
 		*pos++ = WLAN_EID_PREP;
@@ -445,9 +445,8 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 				}
 			}
 		} else {
-			mesh_path_add(sdata, orig_addr);
-			mpath = mesh_path_lookup(sdata, orig_addr);
-			if (!mpath) {
+			mpath = mesh_path_add(sdata, orig_addr);
+			if (IS_ERR(mpath)) {
 				rcu_read_unlock();
 				return 0;
 			}
@@ -486,9 +485,8 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 					(last_hop_metric > mpath->metric)))
 				fresh_info = false;
 		} else {
-			mesh_path_add(sdata, ta);
-			mpath = mesh_path_lookup(sdata, ta);
-			if (!mpath) {
+			mpath = mesh_path_add(sdata, ta);
+			if (IS_ERR(mpath)) {
 				rcu_read_unlock();
 				return 0;
 			}
@@ -661,7 +659,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
 	u32 target_sn, orig_sn, lifetime;
 
 	mhwmp_dbg(sdata, "received PREP from %pM\n",
-		  PREP_IE_ORIG_ADDR(prep_elem));
+		  PREP_IE_TARGET_ADDR(prep_elem));
 
 	orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
 	if (ether_addr_equal(orig_addr, sdata->vif.addr))
@@ -804,9 +802,8 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
 
 	mpath = mesh_path_lookup(sdata, orig_addr);
 	if (!mpath) {
-		mesh_path_add(sdata, orig_addr);
-		mpath = mesh_path_lookup(sdata, orig_addr);
-		if (!mpath) {
+		mpath = mesh_path_add(sdata, orig_addr);
+		if (IS_ERR(mpath)) {
 			rcu_read_unlock();
 			sdata->u.mesh.mshstats.dropped_frames_no_route++;
 			return;
@@ -883,7 +880,7 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
 
 	baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
 	ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
-			len - baselen, &elems);
+			       len - baselen, false, &elems);
 
 	if (elems.preq) {
 		if (elems.preq_len != 37)
@@ -1098,11 +1095,10 @@ int mesh_nexthop_resolve(struct ieee80211_sub_if_data *sdata,
 	/* no nexthop found, start resolving */
 	mpath = mesh_path_lookup(sdata, target_addr);
 	if (!mpath) {
-		mesh_path_add(sdata, target_addr);
-		mpath = mesh_path_lookup(sdata, target_addr);
-		if (!mpath) {
+		mpath = mesh_path_add(sdata, target_addr);
+		if (IS_ERR(mpath)) {
 			mesh_path_discard_frame(sdata, skb);
-			err = -ENOSPC;
+			err = PTR_ERR(mpath);
 			goto endlookup;
 		}
 	}
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index dc7c8df40c2c..89aacfd2756d 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -493,7 +493,8 @@ int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
  *
  * State: the initial state of the new path is set to 0
  */
-int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
+struct mesh_path *mesh_path_add(struct ieee80211_sub_if_data *sdata,
+				const u8 *dst)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee80211_local *local = sdata->local;
@@ -502,18 +503,33 @@ int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
 	struct mpath_node *node, *new_node;
 	struct hlist_head *bucket;
 	int grow = 0;
-	int err = 0;
+	int err;
 	u32 hash_idx;
 
 	if (ether_addr_equal(dst, sdata->vif.addr))
 		/* never add ourselves as neighbours */
-		return -ENOTSUPP;
+		return ERR_PTR(-ENOTSUPP);
 
 	if (is_multicast_ether_addr(dst))
-		return -ENOTSUPP;
+		return ERR_PTR(-ENOTSUPP);
 
 	if (atomic_add_unless(&sdata->u.mesh.mpaths, 1, MESH_MAX_MPATHS) == 0)
-		return -ENOSPC;
+		return ERR_PTR(-ENOSPC);
+
+	read_lock_bh(&pathtbl_resize_lock);
+	tbl = resize_dereference_mesh_paths();
+
+	hash_idx = mesh_table_hash(dst, sdata, tbl);
+	bucket = &tbl->hash_buckets[hash_idx];
+
+	spin_lock(&tbl->hashwlock[hash_idx]);
+
+	hlist_for_each_entry(node, bucket, list) {
+		mpath = node->mpath;
+		if (mpath->sdata == sdata &&
+		    ether_addr_equal(dst, mpath->dst))
+			goto found;
+	}
 
 	err = -ENOMEM;
 	new_mpath = kzalloc(sizeof(struct mesh_path), GFP_ATOMIC);
@@ -524,7 +540,6 @@ int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
 	if (!new_node)
 		goto err_node_alloc;
 
-	read_lock_bh(&pathtbl_resize_lock);
 	memcpy(new_mpath->dst, dst, ETH_ALEN);
 	eth_broadcast_addr(new_mpath->rann_snd_addr);
 	new_mpath->is_root = false;
@@ -538,21 +553,6 @@ int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
 	spin_lock_init(&new_mpath->state_lock);
 	init_timer(&new_mpath->timer);
 
-	tbl = resize_dereference_mesh_paths();
-
-	hash_idx = mesh_table_hash(dst, sdata, tbl);
-	bucket = &tbl->hash_buckets[hash_idx];
-
-	spin_lock(&tbl->hashwlock[hash_idx]);
-
-	err = -EEXIST;
-	hlist_for_each_entry(node, bucket, list) {
-		mpath = node->mpath;
-		if (mpath->sdata == sdata &&
-		    ether_addr_equal(dst, mpath->dst))
-			goto err_exists;
-	}
-
 	hlist_add_head_rcu(&new_node->list, bucket);
 	if (atomic_inc_return(&tbl->entries) >=
 	    tbl->mean_chain_len * (tbl->hash_mask + 1))
@@ -560,23 +560,23 @@ int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
 
 	mesh_paths_generation++;
 
-	spin_unlock(&tbl->hashwlock[hash_idx]);
-	read_unlock_bh(&pathtbl_resize_lock);
 	if (grow) {
 		set_bit(MESH_WORK_GROW_MPATH_TABLE,  &ifmsh->wrkq_flags);
 		ieee80211_queue_work(&local->hw, &sdata->work);
 	}
-	return 0;
-
-err_exists:
+	mpath = new_mpath;
+found:
 	spin_unlock(&tbl->hashwlock[hash_idx]);
 	read_unlock_bh(&pathtbl_resize_lock);
-	kfree(new_node);
+	return mpath;
+
 err_node_alloc:
 	kfree(new_mpath);
 err_path_alloc:
 	atomic_dec(&sdata->u.mesh.mpaths);
-	return err;
+	spin_unlock(&tbl->hashwlock[hash_idx]);
+	read_unlock_bh(&pathtbl_resize_lock);
+	return ERR_PTR(err);
 }
 
 static void mesh_table_free_rcu(struct rcu_head *rcu)
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 937e06fe8f2a..09bebed99416 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -544,8 +544,8 @@ static void mesh_plink_timer(unsigned long data)
 		return;
 	}
 	mpl_dbg(sta->sdata,
-		"Mesh plink timer for %pM fired on state %d\n",
-		sta->sta.addr, sta->plink_state);
+		"Mesh plink timer for %pM fired on state %s\n",
+		sta->sta.addr, mplstates[sta->plink_state]);
 	reason = 0;
 	llid = sta->llid;
 	plid = sta->plid;
@@ -687,7 +687,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
 		baseaddr += 4;
 		baselen += 4;
 	}
-	ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
+	ieee802_11_parse_elems(baseaddr, len - baselen, true, &elems);
 
 	if (!elems.peering) {
 		mpl_dbg(sdata,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index dec42ab1fa91..29620bfc7a69 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -56,7 +56,10 @@ MODULE_PARM_DESC(max_probe_tries,
  * probe on beacon miss before declaring the connection lost
  * default to what we want.
  */
-#define IEEE80211_BEACON_LOSS_COUNT	7
+static int beacon_loss_count = 7;
+module_param(beacon_loss_count, int, 0644);
+MODULE_PARM_DESC(beacon_loss_count,
+		 "Number of beacon intervals before we decide beacon was lost.");
 
 /*
  * Time the connection can be idle before we probe
@@ -286,6 +289,8 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 	} else {
 		/* 40 MHz (and 80 MHz) must be supported for VHT */
 		ret = IEEE80211_STA_DISABLE_VHT;
+		/* also mark 40 MHz disabled */
+		ret |= IEEE80211_STA_DISABLE_40MHZ;
 		goto out;
 	}
 
@@ -300,12 +305,6 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 					       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;
@@ -318,6 +317,10 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 		break;
 	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
 		vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
+		vht_chandef.center_freq2 =
+			ieee80211_channel_to_frequency(
+				vht_oper->center_freq_seg2_idx,
+				channel->band);
 		break;
 	default:
 		if (verbose)
@@ -601,7 +604,6 @@ static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
 	u8 *pos;
 	u32 cap;
 	struct ieee80211_sta_vht_cap vht_cap;
-	int i;
 
 	BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
 
@@ -629,37 +631,6 @@ static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
 			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;
-
-		if (our_mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED)
-			continue;
-
-		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);
@@ -985,6 +956,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
 {
 	struct ieee80211_sub_if_data *sdata =
 		container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
 	if (!ieee80211_sdata_running(sdata))
@@ -994,21 +966,21 @@ static void ieee80211_chswitch_work(struct work_struct *work)
 	if (!ifmgd->associated)
 		goto out;
 
-	sdata->local->_oper_channel = sdata->local->csa_channel;
-	if (!sdata->local->ops->channel_switch) {
+	local->_oper_chandef = local->csa_chandef;
+
+	if (!local->ops->channel_switch) {
 		/* call "hw_config" only if doing sw channel switch */
-		ieee80211_hw_config(sdata->local,
-			IEEE80211_CONF_CHANGE_CHANNEL);
+		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
 	} else {
 		/* update the device channel directly */
-		sdata->local->hw.conf.channel = sdata->local->_oper_channel;
+		local->hw.conf.chandef = local->_oper_chandef;
 	}
 
 	/* XXX: shouldn't really modify cfg80211-owned data! */
-	ifmgd->associated->channel = sdata->local->_oper_channel;
+	ifmgd->associated->channel = local->_oper_chandef.chan;
 
 	/* XXX: wait for a beacon first? */
-	ieee80211_wake_queues_by_reason(&sdata->local->hw,
+	ieee80211_wake_queues_by_reason(&local->hw,
 					IEEE80211_MAX_QUEUE_MAP,
 					IEEE80211_QUEUE_STOP_REASON_CSA);
  out:
@@ -1041,56 +1013,193 @@ static void ieee80211_chswitch_timer(unsigned long data)
 	ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
 }
 
-void
+static 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)
+				 u64 timestamp, struct ieee802_11_elems *elems)
 {
-	struct cfg80211_bss *cbss =
-		container_of((void *)bss, struct cfg80211_bss, priv);
-	struct ieee80211_channel *new_ch;
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
-	int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num,
-						      cbss->channel->band);
+	struct cfg80211_bss *cbss = ifmgd->associated;
+	struct ieee80211_bss *bss;
 	struct ieee80211_chanctx *chanctx;
+	enum ieee80211_band new_band;
+	int new_freq;
+	u8 new_chan_no;
+	u8 count;
+	u8 mode;
+	struct ieee80211_channel *new_chan;
+	struct cfg80211_chan_def new_chandef = {};
+	struct cfg80211_chan_def new_vht_chandef = {};
+	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
+	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
+	int secondary_channel_offset = -1;
 
 	ASSERT_MGD_MTX(ifmgd);
 
-	if (!ifmgd->associated)
+	if (!cbss)
 		return;
 
-	if (sdata->local->scanning)
+	if (local->scanning)
 		return;
 
-	/* Disregard subsequent beacons if we are already running a timer
-	   processing a CSA */
-
+	/* disregard subsequent announcements if we are already processing */
 	if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
 		return;
 
-	new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
-	if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) {
+	sec_chan_offs = elems->sec_chan_offs;
+	wide_bw_chansw_ie = elems->wide_bw_chansw_ie;
+
+	if (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
+			    IEEE80211_STA_DISABLE_40MHZ)) {
+		sec_chan_offs = NULL;
+		wide_bw_chansw_ie = NULL;
+	}
+
+	if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
+		wide_bw_chansw_ie = NULL;
+
+	if (elems->ext_chansw_ie) {
+		if (!ieee80211_operating_class_to_band(
+				elems->ext_chansw_ie->new_operating_class,
+				&new_band)) {
+			sdata_info(sdata,
+				   "cannot understand ECSA IE operating class %d, disconnecting\n",
+				   elems->ext_chansw_ie->new_operating_class);
+			ieee80211_queue_work(&local->hw,
+					     &ifmgd->csa_connection_drop_work);
+		}
+		new_chan_no = elems->ext_chansw_ie->new_ch_num;
+		count = elems->ext_chansw_ie->count;
+		mode = elems->ext_chansw_ie->mode;
+	} else if (elems->ch_switch_ie) {
+		new_band = cbss->channel->band;
+		new_chan_no = elems->ch_switch_ie->new_ch_num;
+		count = elems->ch_switch_ie->count;
+		mode = elems->ch_switch_ie->mode;
+	} else {
+		/* nothing here we understand */
+		return;
+	}
+
+	bss = (void *)cbss->priv;
+
+	new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band);
+	new_chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
+	if (!new_chan || new_chan->flags & IEEE80211_CHAN_DISABLED) {
 		sdata_info(sdata,
 			   "AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
 			   ifmgd->associated->bssid, new_freq);
-		ieee80211_queue_work(&sdata->local->hw,
+		ieee80211_queue_work(&local->hw,
+				     &ifmgd->csa_connection_drop_work);
+		return;
+	}
+
+	if (sec_chan_offs) {
+		secondary_channel_offset = sec_chan_offs->sec_chan_offs;
+	} else if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
+		/* if HT is enabled and the IE not present, it's still HT */
+		secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+	}
+
+	switch (secondary_channel_offset) {
+	default:
+		/* secondary_channel_offset was present but is invalid */
+	case IEEE80211_HT_PARAM_CHA_SEC_NONE:
+		cfg80211_chandef_create(&new_chandef, new_chan,
+					NL80211_CHAN_HT20);
+		break;
+	case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+		cfg80211_chandef_create(&new_chandef, new_chan,
+					NL80211_CHAN_HT40PLUS);
+		break;
+	case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+		cfg80211_chandef_create(&new_chandef, new_chan,
+					NL80211_CHAN_HT40MINUS);
+		break;
+	case -1:
+		cfg80211_chandef_create(&new_chandef, new_chan,
+					NL80211_CHAN_NO_HT);
+		break;
+	}
+
+	if (wide_bw_chansw_ie) {
+		new_vht_chandef.chan = new_chan;
+		new_vht_chandef.center_freq1 =
+			ieee80211_channel_to_frequency(
+				wide_bw_chansw_ie->new_center_freq_seg0,
+				new_band);
+
+		switch (wide_bw_chansw_ie->new_channel_width) {
+		default:
+			/* hmmm, ignore VHT and use HT if present */
+		case IEEE80211_VHT_CHANWIDTH_USE_HT:
+			new_vht_chandef.chan = NULL;
+			break;
+		case IEEE80211_VHT_CHANWIDTH_80MHZ:
+			new_vht_chandef.width = NL80211_CHAN_WIDTH_80;
+			break;
+		case IEEE80211_VHT_CHANWIDTH_160MHZ:
+			new_vht_chandef.width = NL80211_CHAN_WIDTH_160;
+			break;
+		case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
+			/* field is otherwise reserved */
+			new_vht_chandef.center_freq2 =
+				ieee80211_channel_to_frequency(
+					wide_bw_chansw_ie->new_center_freq_seg1,
+					new_band);
+			new_vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
+			break;
+		}
+		if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
+		    new_vht_chandef.width == NL80211_CHAN_WIDTH_80P80)
+			chandef_downgrade(&new_vht_chandef);
+		if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
+		    new_vht_chandef.width == NL80211_CHAN_WIDTH_160)
+			chandef_downgrade(&new_vht_chandef);
+		if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
+		    new_vht_chandef.width > NL80211_CHAN_WIDTH_20)
+			chandef_downgrade(&new_vht_chandef);
+	}
+
+	/* if VHT data is there validate & use it */
+	if (new_vht_chandef.chan) {
+		if (!cfg80211_chandef_compatible(&new_vht_chandef,
+						 &new_chandef)) {
+			sdata_info(sdata,
+				   "AP %pM CSA has inconsistent channel data, disconnecting\n",
+				   ifmgd->associated->bssid);
+			ieee80211_queue_work(&local->hw,
+					     &ifmgd->csa_connection_drop_work);
+			return;
+		}
+		new_chandef = new_vht_chandef;
+	}
+
+	if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef,
+				     IEEE80211_CHAN_DISABLED)) {
+		sdata_info(sdata,
+			   "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
+			   ifmgd->associated->bssid, new_freq,
+			   new_chandef.width, new_chandef.center_freq1,
+			   new_chandef.center_freq2);
+		ieee80211_queue_work(&local->hw,
 				     &ifmgd->csa_connection_drop_work);
 		return;
 	}
 
 	ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
 
-	if (sdata->local->use_chanctx) {
+	if (local->use_chanctx) {
 		sdata_info(sdata,
 			   "not handling channel switch with channel contexts\n");
-		ieee80211_queue_work(&sdata->local->hw,
+		ieee80211_queue_work(&local->hw,
 				     &ifmgd->csa_connection_drop_work);
 		return;
 	}
 
-	mutex_lock(&sdata->local->chanctx_mtx);
+	mutex_lock(&local->chanctx_mtx);
 	if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
-		mutex_unlock(&sdata->local->chanctx_mtx);
+		mutex_unlock(&local->chanctx_mtx);
 		return;
 	}
 	chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
@@ -1098,40 +1207,39 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 	if (chanctx->refcount > 1) {
 		sdata_info(sdata,
 			   "channel switch with multiple interfaces on the same channel, disconnecting\n");
-		ieee80211_queue_work(&sdata->local->hw,
+		ieee80211_queue_work(&local->hw,
 				     &ifmgd->csa_connection_drop_work);
-		mutex_unlock(&sdata->local->chanctx_mtx);
+		mutex_unlock(&local->chanctx_mtx);
 		return;
 	}
-	mutex_unlock(&sdata->local->chanctx_mtx);
+	mutex_unlock(&local->chanctx_mtx);
 
-	sdata->local->csa_channel = new_ch;
+	local->csa_chandef = new_chandef;
 
-	if (sw_elem->mode)
-		ieee80211_stop_queues_by_reason(&sdata->local->hw,
+	if (mode)
+		ieee80211_stop_queues_by_reason(&local->hw,
 				IEEE80211_MAX_QUEUE_MAP,
 				IEEE80211_QUEUE_STOP_REASON_CSA);
 
-	if (sdata->local->ops->channel_switch) {
+	if (local->ops->channel_switch) {
 		/* use driver's channel switch callback */
 		struct ieee80211_channel_switch ch_switch = {
 			.timestamp = timestamp,
-			.block_tx = sw_elem->mode,
-			.channel = new_ch,
-			.count = sw_elem->count,
+			.block_tx = mode,
+			.chandef = new_chandef,
+			.count = count,
 		};
 
-		drv_channel_switch(sdata->local, &ch_switch);
+		drv_channel_switch(local, &ch_switch);
 		return;
 	}
 
 	/* channel switch handled in software */
-	if (sw_elem->count <= 1)
-		ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
+	if (count <= 1)
+		ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
 	else
 		mod_timer(&ifmgd->chswitch_timer,
-			  TU_TO_EXP_TIME(sw_elem->count *
-					 cbss->beacon_interval));
+			  TU_TO_EXP_TIME(count * cbss->beacon_interval));
 }
 
 static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
@@ -1430,13 +1538,11 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 
 	if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
 	    !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
-		netif_tx_stop_all_queues(sdata->dev);
-
-		if (drv_tx_frames_pending(local))
+		if (drv_tx_frames_pending(local)) {
 			mod_timer(&local->dynamic_ps_timer, jiffies +
 				  msecs_to_jiffies(
 				  local->hw.conf.dynamic_ps_timeout));
-		else {
+		} else {
 			ieee80211_send_nullfunc(local, sdata, 1);
 			/* Flush to get the tx status of nullfunc frame */
 			ieee80211_flush_queues(local, sdata);
@@ -1450,9 +1556,6 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
 		local->hw.conf.flags |= IEEE80211_CONF_PS;
 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 	}
-
-	if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
-		netif_tx_wake_all_queues(sdata->dev);
 }
 
 void ieee80211_dynamic_ps_timer(unsigned long data)
@@ -1558,6 +1661,7 @@ static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
 		params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
 		params.cw_min = ecw2cw(pos[1] & 0x0f);
 		params.txop = get_unaligned_le16(pos + 2);
+		params.acm = acm;
 		params.uapsd = uapsd;
 
 		mlme_dbg(sdata,
@@ -1645,7 +1749,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 		bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
 
 	sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
-		IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
+		beacon_loss_count * bss_conf->beacon_int));
 
 	sdata->u.mgd.associated = cbss;
 	memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
@@ -1658,18 +1762,17 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 		rcu_read_lock();
 		ies = rcu_dereference(cbss->ies);
 		if (ies) {
-			u8 noa[2];
 			int ret;
 
 			ret = cfg80211_get_p2p_attr(
 					ies->data, ies->len,
 					IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
-					noa, sizeof(noa));
+					(u8 *) &bss_conf->p2p_noa_attr,
+					sizeof(bss_conf->p2p_noa_attr));
 			if (ret >= 2) {
-				bss_conf->p2p_oppps = noa[1] & 0x80;
-				bss_conf->p2p_ctwindow = noa[1] & 0x7f;
+				sdata->u.mgd.p2p_noa_index =
+					bss_conf->p2p_noa_attr.index;
 				bss_info_changed |= BSS_CHANGED_P2P_PS;
-				sdata->u.mgd.p2p_noa_index = noa[0];
 			}
 		}
 		rcu_read_unlock();
@@ -1713,7 +1816,6 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 	ieee80211_recalc_smps(sdata);
 	ieee80211_recalc_ps_vif(sdata);
 
-	netif_tx_start_all_queues(sdata->dev);
 	netif_carrier_on(sdata->dev);
 }
 
@@ -1736,22 +1838,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	ieee80211_stop_poll(sdata);
 
 	ifmgd->associated = NULL;
-
-	/*
-	 * we need to commit the associated = NULL change because the
-	 * scan code uses that to determine whether this iface should
-	 * go to/wake up from powersave or not -- and could otherwise
-	 * wake the queues erroneously.
-	 */
-	smp_mb();
-
-	/*
-	 * Thus, we can only afterwards stop the queues -- to account
-	 * for the case where another CPU is finishing a scan at this
-	 * time -- we don't want the scan code to enable queues.
-	 */
-
-	netif_tx_stop_all_queues(sdata->dev);
 	netif_carrier_off(sdata->dev);
 
 	/*
@@ -1794,8 +1880,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 	changed |= BSS_CHANGED_ASSOC;
 	sdata->vif.bss_conf.assoc = false;
 
-	sdata->vif.bss_conf.p2p_ctwindow = 0;
-	sdata->vif.bss_conf.p2p_oppps = false;
+	ifmgd->p2p_noa_index = -1;
+	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
+	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 
 	/* on the next assoc, re-program HT/VHT parameters */
 	memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
@@ -1975,12 +2062,15 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
 		goto out;
 	}
 
-	if (beacon)
+	if (beacon) {
 		mlme_dbg_ratelimited(sdata,
-				     "detected beacon loss from AP - probing\n");
+				     "detected beacon loss from AP (missed %d beacons) - probing\n",
+				     beacon_loss_count);
 
-	ieee80211_cqm_rssi_notify(&sdata->vif,
-		NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL);
+		ieee80211_cqm_rssi_notify(&sdata->vif,
+					  NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
+					  GFP_KERNEL);
+	}
 
 	/*
 	 * The driver/our work has already reported this event or the
@@ -2126,7 +2216,6 @@ 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);
 }
@@ -2176,7 +2265,7 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 	u32 tx_flags = 0;
 
 	pos = mgmt->u.auth.variable;
-	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
 	if (!elems.challenge)
 		return;
 	auth_data->expected_transaction = 4;
@@ -2441,7 +2530,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	}
 
 	pos = mgmt->u.assoc_resp.variable;
-	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
 
 	if (!elems.supp_rates) {
 		sdata_info(sdata, "no SuppRates element in AssocResp\n");
@@ -2610,13 +2699,13 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 		   capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
 
 	pos = mgmt->u.assoc_resp.variable;
-	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
 
 	if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
-	    elems.timeout_int && elems.timeout_int_len == 5 &&
-	    elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
+	    elems.timeout_int &&
+	    elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
 		u32 tu, ms;
-		tu = get_unaligned_le32(elems.timeout_int + 1);
+		tu = le32_to_cpu(elems.timeout_int->value);
 		ms = tu * 1024 / 1000;
 		sdata_info(sdata,
 			   "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
@@ -2665,6 +2754,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_channel *channel;
 	bool need_ps = false;
 
+	lockdep_assert_held(&sdata->u.mgd.mtx);
+
 	if ((sdata->u.mgd.associated &&
 	     ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) ||
 	    (sdata->u.mgd.assoc_data &&
@@ -2679,7 +2770,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		}
 	}
 
-	if (elems->ds_params && elems->ds_params_len == 1)
+	if (elems->ds_params)
 		freq = ieee80211_channel_to_frequency(elems->ds_params[0],
 						      rx_status->band);
 	else
@@ -2695,7 +2786,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 	if (bss)
 		ieee80211_rx_bss_put(local, bss);
 
-	if (!sdata->u.mgd.associated)
+	if (!sdata->u.mgd.associated ||
+	    !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid))
 		return;
 
 	if (need_ps) {
@@ -2704,10 +2796,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 		mutex_unlock(&local->iflist_mtx);
 	}
 
-	if (elems->ch_switch_ie &&
-	    memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)
-		ieee80211_sta_process_chanswitch(sdata, elems->ch_switch_ie,
-						 bss, rx_status->mactime);
+	ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, elems);
+
 }
 
 
@@ -2732,7 +2822,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
 		return;
 
 	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
-				&elems);
+			       false, &elems);
 
 	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 
@@ -2815,7 +2905,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	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);
+				       len - baselen, false, &elems);
 
 		ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
 		ifmgd->assoc_data->have_beacon = true;
@@ -2925,7 +3015,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 
 	ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
 	ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
-					  len - baselen, &elems,
+					  len - baselen, false, &elems,
 					  care_about_ies, ncrc);
 
 	if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
@@ -2957,22 +3047,30 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (sdata->vif.p2p) {
-		u8 noa[2];
+		struct ieee80211_p2p_noa_attr noa = {};
 		int ret;
 
 		ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
 					    len - baselen,
 					    IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
-					    noa, sizeof(noa));
-		if (ret >= 2 && sdata->u.mgd.p2p_noa_index != noa[0]) {
-			bss_conf->p2p_oppps = noa[1] & 0x80;
-			bss_conf->p2p_ctwindow = noa[1] & 0x7f;
+					    (u8 *) &noa, sizeof(noa));
+		if (ret >= 2) {
+			if (sdata->u.mgd.p2p_noa_index != noa.index) {
+				/* valid noa_attr and index changed */
+				sdata->u.mgd.p2p_noa_index = noa.index;
+				memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
+				changed |= BSS_CHANGED_P2P_PS;
+				/*
+				 * make sure we update all information, the CRC
+				 * mechanism doesn't look at P2P attributes.
+				 */
+				ifmgd->beacon_crc_valid = false;
+			}
+		} else if (sdata->u.mgd.p2p_noa_index != -1) {
+			/* noa_attr not found and we had valid noa_attr before */
+			sdata->u.mgd.p2p_noa_index = -1;
+			memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
 			changed |= BSS_CHANGED_P2P_PS;
-			sdata->u.mgd.p2p_noa_index = noa[0];
-			/*
-			 * make sure we update all information, the CRC
-			 * mechanism doesn't look at P2P attributes.
-			 */
 			ifmgd->beacon_crc_valid = false;
 		}
 	}
@@ -3014,7 +3112,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 		changed |= BSS_CHANGED_DTIM_PERIOD;
 	}
 
-	if (elems.erp_info && elems.erp_info_len >= 1) {
+	if (elems.erp_info) {
 		erp_valid = true;
 		erp_value = elems.erp_info[0];
 	} else {
@@ -3064,6 +3162,8 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 	enum rx_mgmt_action rma = RX_MGMT_NONE;
 	u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
 	u16 fc;
+	struct ieee802_11_elems elems;
+	int ies_len;
 
 	rx_status = (struct ieee80211_rx_status *) skb->cb;
 	mgmt = (struct ieee80211_mgmt *) skb->data;
@@ -3093,14 +3193,48 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 		rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss);
 		break;
 	case IEEE80211_STYPE_ACTION:
-		switch (mgmt->u.action.category) {
-		case WLAN_CATEGORY_SPECTRUM_MGMT:
+		if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
+			ies_len = skb->len -
+				  offsetof(struct ieee80211_mgmt,
+					   u.action.u.chan_switch.variable);
+
+			if (ies_len < 0)
+				break;
+
+			ieee802_11_parse_elems(
+				mgmt->u.action.u.chan_switch.variable,
+				ies_len, true, &elems);
+
+			if (elems.parse_error)
+				break;
+
 			ieee80211_sta_process_chanswitch(sdata,
-					&mgmt->u.action.u.chan_switch.sw_elem,
-					(void *)ifmgd->associated->priv,
-					rx_status->mactime);
-			break;
+							 rx_status->mactime,
+							 &elems);
+		} else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
+			ies_len = skb->len -
+				  offsetof(struct ieee80211_mgmt,
+					   u.action.u.ext_chan_switch.variable);
+
+			if (ies_len < 0)
+				break;
+
+			ieee802_11_parse_elems(
+				mgmt->u.action.u.ext_chan_switch.variable,
+				ies_len, true, &elems);
+
+			if (elems.parse_error)
+				break;
+
+			/* for the handling code pretend this was also an IE */
+			elems.ext_chansw_ie =
+				&mgmt->u.action.u.ext_chan_switch.data;
+
+			ieee80211_sta_process_chanswitch(sdata,
+							 rx_status->mactime,
+							 &elems);
 		}
+		break;
 	}
 	mutex_unlock(&ifmgd->mtx);
 
@@ -3513,8 +3647,9 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
 
 	ifmgd->flags = 0;
 	ifmgd->powersave = sdata->wdev.ps;
-	ifmgd->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
-	ifmgd->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
+	ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
+	ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
+	ifmgd->p2p_noa_index = -1;
 
 	mutex_init(&ifmgd->mtx);
 
@@ -4079,7 +4214,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	rcu_read_unlock();
 
 	if (bss->wmm_used && bss->uapsd_supported &&
-	    (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) {
+	    (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
+	    sdata->wmm_acm != 0xff) {
 		assoc_data->uapsd = true;
 		ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
 	} else {
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index cce795871ab1..acd1f71adc03 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -445,15 +445,15 @@ void ieee80211_roc_setup(struct ieee80211_local *local)
 	INIT_LIST_HEAD(&local->roc_list);
 }
 
-void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata)
+void ieee80211_roc_purge(struct ieee80211_local *local,
+			 struct ieee80211_sub_if_data *sdata)
 {
-	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_roc_work *roc, *tmp;
 	LIST_HEAD(tmp_list);
 
 	mutex_lock(&local->mtx);
 	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
-		if (roc->sdata != sdata)
+		if (sdata && roc->sdata != sdata)
 			continue;
 
 		if (roc->started && local->ops->remain_on_channel) {
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 3d16f4e61743..7fc5d0d8149a 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -19,6 +19,10 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 
 	ieee80211_dfs_cac_cancel(local);
 
+	ieee80211_roc_purge(local, NULL);
+
+	ieee80211_del_virtual_monitor(local);
+
 	if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
 		mutex_lock(&local->sta_mtx);
 		list_for_each_entry(sta, &local->sta_list, list) {
@@ -33,8 +37,9 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 					IEEE80211_MAX_QUEUE_MAP,
 					IEEE80211_QUEUE_STOP_REASON_SUSPEND);
 
-	/* flush out all packets */
+	/* flush out all packets and station cleanup call_rcu()s */
 	synchronize_net();
+	rcu_barrier();
 
 	ieee80211_flush_queues(local, NULL);
 
@@ -101,10 +106,6 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 		drv_remove_interface(local, sdata);
 	}
 
-	sdata = rtnl_dereference(local->monitor_sdata);
-	if (sdata)
-		drv_remove_interface(local, sdata);
-
 	/*
 	 * We disconnected on all interfaces before suspend, all channel
 	 * contexts should be released.
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index dd88381c53b7..0d51877efdb7 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -252,6 +252,25 @@ rate_lowest_non_cck_index(struct ieee80211_supported_band *sband,
 	return 0;
 }
 
+static void __rate_control_send_low(struct ieee80211_hw *hw,
+				    struct ieee80211_supported_band *sband,
+				    struct ieee80211_sta *sta,
+				    struct ieee80211_tx_info *info)
+{
+	if ((sband->band != IEEE80211_BAND_2GHZ) ||
+	    !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE))
+		info->control.rates[0].idx = rate_lowest_index(sband, sta);
+	else
+		info->control.rates[0].idx =
+			rate_lowest_non_cck_index(sband, sta);
+
+	info->control.rates[0].count =
+		(info->flags & IEEE80211_TX_CTL_NO_ACK) ?
+		1 : hw->max_rate_tries;
+
+	info->control.skip_table = 1;
+}
+
 
 bool rate_control_send_low(struct ieee80211_sta *sta,
 			   void *priv_sta,
@@ -262,16 +281,8 @@ bool rate_control_send_low(struct ieee80211_sta *sta,
 	int mcast_rate;
 
 	if (!sta || !priv_sta || rc_no_data_or_no_ack_use_min(txrc)) {
-		if ((sband->band != IEEE80211_BAND_2GHZ) ||
-		    !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE))
-			info->control.rates[0].idx =
-				rate_lowest_index(txrc->sband, sta);
-		else
-			info->control.rates[0].idx =
-				rate_lowest_non_cck_index(txrc->sband, sta);
-		info->control.rates[0].count =
-			(info->flags & IEEE80211_TX_CTL_NO_ACK) ?
-			1 : txrc->hw->max_rate_tries;
+		__rate_control_send_low(txrc->hw, sband, sta, info);
+
 		if (!sta && txrc->bss) {
 			mcast_rate = txrc->bss_conf->mcast_rate[sband->band];
 			if (mcast_rate > 0) {
@@ -355,7 +366,8 @@ static bool rate_idx_match_mcs_mask(struct ieee80211_tx_rate *rate,
 
 
 static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
-				struct ieee80211_tx_rate_control *txrc,
+				struct ieee80211_supported_band *sband,
+				enum nl80211_chan_width chan_width,
 				u32 mask,
 				u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
 {
@@ -375,27 +387,17 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
 				  IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
 		alt_rate.count = rate->count;
 		if (rate_idx_match_legacy_mask(&alt_rate,
-					       txrc->sband->n_bitrates,
-					       mask)) {
+					       sband->n_bitrates, mask)) {
 			*rate = alt_rate;
 			return;
 		}
 	} else {
-		struct sk_buff *skb = txrc->skb;
-		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-		__le16 fc;
-
 		/* handle legacy rates */
-		if (rate_idx_match_legacy_mask(rate, txrc->sband->n_bitrates,
-					       mask))
+		if (rate_idx_match_legacy_mask(rate, sband->n_bitrates, mask))
 			return;
 
 		/* if HT BSS, and we handle a data frame, also try HT rates */
-		if (txrc->bss_conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
-			return;
-
-		fc = hdr->frame_control;
-		if (!ieee80211_is_data(fc))
+		if (chan_width == NL80211_CHAN_WIDTH_20_NOHT)
 			return;
 
 		alt_rate.idx = 0;
@@ -408,7 +410,7 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
 
 		alt_rate.flags |= IEEE80211_TX_RC_MCS;
 
-		if (txrc->bss_conf->chandef.width == NL80211_CHAN_WIDTH_40)
+		if (chan_width == NL80211_CHAN_WIDTH_40)
 			alt_rate.flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
 
 		if (rate_idx_match_mcs_mask(&alt_rate, mcs_mask)) {
@@ -426,6 +428,228 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
 	 */
 }
 
+static void rate_fixup_ratelist(struct ieee80211_vif *vif,
+				struct ieee80211_supported_band *sband,
+				struct ieee80211_tx_info *info,
+				struct ieee80211_tx_rate *rates,
+				int max_rates)
+{
+	struct ieee80211_rate *rate;
+	bool inval = false;
+	int i;
+
+	/*
+	 * Set up the RTS/CTS rate as the fastest basic rate
+	 * that is not faster than the data rate unless there
+	 * is no basic rate slower than the data rate, in which
+	 * case we pick the slowest basic rate
+	 *
+	 * XXX: Should this check all retry rates?
+	 */
+	if (!(rates[0].flags & IEEE80211_TX_RC_MCS)) {
+		u32 basic_rates = vif->bss_conf.basic_rates;
+		s8 baserate = basic_rates ? ffs(basic_rates - 1) : 0;
+
+		rate = &sband->bitrates[rates[0].idx];
+
+		for (i = 0; i < sband->n_bitrates; i++) {
+			/* must be a basic rate */
+			if (!(basic_rates & BIT(i)))
+				continue;
+			/* must not be faster than the data rate */
+			if (sband->bitrates[i].bitrate > rate->bitrate)
+				continue;
+			/* maximum */
+			if (sband->bitrates[baserate].bitrate <
+			     sband->bitrates[i].bitrate)
+				baserate = i;
+		}
+
+		info->control.rts_cts_rate_idx = baserate;
+	}
+
+	for (i = 0; i < max_rates; i++) {
+		/*
+		 * make sure there's no valid rate following
+		 * an invalid one, just in case drivers don't
+		 * take the API seriously to stop at -1.
+		 */
+		if (inval) {
+			rates[i].idx = -1;
+			continue;
+		}
+		if (rates[i].idx < 0) {
+			inval = true;
+			continue;
+		}
+
+		/*
+		 * For now assume MCS is already set up correctly, this
+		 * needs to be fixed.
+		 */
+		if (rates[i].flags & IEEE80211_TX_RC_MCS) {
+			WARN_ON(rates[i].idx > 76);
+
+			if (!(rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) &&
+			    info->control.use_cts_prot)
+				rates[i].flags |=
+					IEEE80211_TX_RC_USE_CTS_PROTECT;
+			continue;
+		}
+
+		if (rates[i].flags & IEEE80211_TX_RC_VHT_MCS) {
+			WARN_ON(ieee80211_rate_get_vht_mcs(&rates[i]) > 9);
+			continue;
+		}
+
+		/* set up RTS protection if desired */
+		if (info->control.use_rts) {
+			rates[i].flags |= IEEE80211_TX_RC_USE_RTS_CTS;
+			info->control.use_cts_prot = false;
+		}
+
+		/* RC is busted */
+		if (WARN_ON_ONCE(rates[i].idx >= sband->n_bitrates)) {
+			rates[i].idx = -1;
+			continue;
+		}
+
+		rate = &sband->bitrates[rates[i].idx];
+
+		/* set up short preamble */
+		if (info->control.short_preamble &&
+		    rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+			rates[i].flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
+
+		/* set up G protection */
+		if (!(rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) &&
+		    info->control.use_cts_prot &&
+		    rate->flags & IEEE80211_RATE_ERP_G)
+			rates[i].flags |= IEEE80211_TX_RC_USE_CTS_PROTECT;
+	}
+}
+
+
+static void rate_control_fill_sta_table(struct ieee80211_sta *sta,
+					struct ieee80211_tx_info *info,
+					struct ieee80211_tx_rate *rates,
+					int max_rates)
+{
+	struct ieee80211_sta_rates *ratetbl = NULL;
+	int i;
+
+	if (sta && !info->control.skip_table)
+		ratetbl = rcu_dereference(sta->rates);
+
+	/* Fill remaining rate slots with data from the sta rate table. */
+	max_rates = min_t(int, max_rates, IEEE80211_TX_RATE_TABLE_SIZE);
+	for (i = 0; i < max_rates; i++) {
+		if (i < ARRAY_SIZE(info->control.rates) &&
+		    info->control.rates[i].idx >= 0 &&
+		    info->control.rates[i].count) {
+			if (rates != info->control.rates)
+				rates[i] = info->control.rates[i];
+		} else if (ratetbl) {
+			rates[i].idx = ratetbl->rate[i].idx;
+			rates[i].flags = ratetbl->rate[i].flags;
+			if (info->control.use_rts)
+				rates[i].count = ratetbl->rate[i].count_rts;
+			else if (info->control.use_cts_prot)
+				rates[i].count = ratetbl->rate[i].count_cts;
+			else
+				rates[i].count = ratetbl->rate[i].count;
+		} else {
+			rates[i].idx = -1;
+			rates[i].count = 0;
+		}
+
+		if (rates[i].idx < 0 || !rates[i].count)
+			break;
+	}
+}
+
+static void rate_control_apply_mask(struct ieee80211_sub_if_data *sdata,
+				    struct ieee80211_sta *sta,
+				    struct ieee80211_supported_band *sband,
+				    struct ieee80211_tx_info *info,
+				    struct ieee80211_tx_rate *rates,
+				    int max_rates)
+{
+	enum nl80211_chan_width chan_width;
+	u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
+	bool has_mcs_mask;
+	u32 mask;
+	int i;
+
+	/*
+	 * Try to enforce the rateidx mask the user wanted. skip this if the
+	 * default mask (allow all rates) is used to save some processing for
+	 * the common case.
+	 */
+	mask = sdata->rc_rateidx_mask[info->band];
+	has_mcs_mask = sdata->rc_has_mcs_mask[info->band];
+	if (mask == (1 << sband->n_bitrates) - 1 && !has_mcs_mask)
+		return;
+
+	if (has_mcs_mask)
+		memcpy(mcs_mask, sdata->rc_rateidx_mcs_mask[info->band],
+		       sizeof(mcs_mask));
+	else
+		memset(mcs_mask, 0xff, sizeof(mcs_mask));
+
+	if (sta) {
+		/* Filter out rates that the STA does not support */
+		mask &= sta->supp_rates[info->band];
+		for (i = 0; i < sizeof(mcs_mask); i++)
+			mcs_mask[i] &= sta->ht_cap.mcs.rx_mask[i];
+	}
+
+	/*
+	 * Make sure the rate index selected for each TX rate is
+	 * included in the configured mask and change the rate indexes
+	 * if needed.
+	 */
+	chan_width = sdata->vif.bss_conf.chandef.width;
+	for (i = 0; i < max_rates; i++) {
+		/* Skip invalid rates */
+		if (rates[i].idx < 0)
+			break;
+
+		rate_idx_match_mask(&rates[i], sband, mask, chan_width,
+				    mcs_mask);
+	}
+}
+
+void ieee80211_get_tx_rates(struct ieee80211_vif *vif,
+			    struct ieee80211_sta *sta,
+			    struct sk_buff *skb,
+			    struct ieee80211_tx_rate *dest,
+			    int max_rates)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_supported_band *sband;
+
+	rate_control_fill_sta_table(sta, info, dest, max_rates);
+
+	if (!vif)
+		return;
+
+	sdata = vif_to_sdata(vif);
+	sband = sdata->local->hw.wiphy->bands[info->band];
+
+	if (ieee80211_is_data(hdr->frame_control))
+		rate_control_apply_mask(sdata, sta, sband, info, dest, max_rates);
+
+	if (dest[0].idx < 0)
+		__rate_control_send_low(&sdata->local->hw, sband, sta, info);
+
+	if (sta)
+		rate_fixup_ratelist(vif, sband, info, dest, max_rates);
+}
+EXPORT_SYMBOL(ieee80211_get_tx_rates);
+
 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
 			   struct sta_info *sta,
 			   struct ieee80211_tx_rate_control *txrc)
@@ -435,8 +659,6 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_sta *ista = NULL;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
 	int i;
-	u32 mask;
-	u8 mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
 
 	if (sta && test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) {
 		ista = &sta->sta;
@@ -454,37 +676,27 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
 
 	ref->ops->get_rate(ref->priv, ista, priv_sta, txrc);
 
-	/*
-	 * Try to enforce the rateidx mask the user wanted. skip this if the
-	 * default mask (allow all rates) is used to save some processing for
-	 * the common case.
-	 */
-	mask = sdata->rc_rateidx_mask[info->band];
-	memcpy(mcs_mask, sdata->rc_rateidx_mcs_mask[info->band],
-	       sizeof(mcs_mask));
-	if (mask != (1 << txrc->sband->n_bitrates) - 1) {
-		if (sta) {
-			/* Filter out rates that the STA does not support */
-			mask &= sta->sta.supp_rates[info->band];
-			for (i = 0; i < sizeof(mcs_mask); i++)
-				mcs_mask[i] &= sta->sta.ht_cap.mcs.rx_mask[i];
-		}
-		/*
-		 * Make sure the rate index selected for each TX rate is
-		 * included in the configured mask and change the rate indexes
-		 * if needed.
-		 */
-		for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-			/* Skip invalid rates */
-			if (info->control.rates[i].idx < 0)
-				break;
-			rate_idx_match_mask(&info->control.rates[i], txrc,
-					    mask, mcs_mask);
-		}
-	}
+	if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
+		return;
+
+	ieee80211_get_tx_rates(&sdata->vif, ista, txrc->skb,
+			       info->control.rates,
+			       ARRAY_SIZE(info->control.rates));
+}
 
-	BUG_ON(info->control.rates[0].idx < 0);
+int rate_control_set_rates(struct ieee80211_hw *hw,
+			   struct ieee80211_sta *pubsta,
+			   struct ieee80211_sta_rates *rates)
+{
+	struct ieee80211_sta_rates *old = rcu_dereference(pubsta->rates);
+
+	rcu_assign_pointer(pubsta->rates, rates);
+	if (old)
+		kfree_rcu(old, rcu_head);
+
+	return 0;
 }
+EXPORT_SYMBOL(rate_control_set_rates);
 
 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 				 const char *name)
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 1c36c9b4fa4a..ac7ef5414bde 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -84,6 +84,50 @@ minstrel_sort_best_tp_rates(struct minstrel_sta_info *mi, int i, u8 *tp_list)
 }
 
 static void
+minstrel_set_rate(struct minstrel_sta_info *mi, struct ieee80211_sta_rates *ratetbl,
+		  int offset, int idx)
+{
+	struct minstrel_rate *r = &mi->r[idx];
+
+	ratetbl->rate[offset].idx = r->rix;
+	ratetbl->rate[offset].count = r->adjusted_retry_count;
+	ratetbl->rate[offset].count_cts = r->retry_count_cts;
+	ratetbl->rate[offset].count_rts = r->retry_count_rtscts;
+}
+
+static void
+minstrel_update_rates(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
+{
+	struct ieee80211_sta_rates *ratetbl;
+	int i = 0;
+
+	ratetbl = kzalloc(sizeof(*ratetbl), GFP_ATOMIC);
+	if (!ratetbl)
+		return;
+
+	/* Start with max_tp_rate */
+	minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[0]);
+
+	if (mp->hw->max_rates >= 3) {
+		/* At least 3 tx rates supported, use max_tp_rate2 next */
+		minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[1]);
+	}
+
+	if (mp->hw->max_rates >= 2) {
+		/* At least 2 tx rates supported, use max_prob_rate next */
+		minstrel_set_rate(mi, ratetbl, i++, mi->max_prob_rate);
+	}
+
+	/* Use lowest rate last */
+	ratetbl->rate[i].idx = mi->lowest_rix;
+	ratetbl->rate[i].count = mp->max_retry;
+	ratetbl->rate[i].count_cts = mp->max_retry;
+	ratetbl->rate[i].count_rts = mp->max_retry;
+
+	rate_control_set_rates(mp->hw, mi->sta, ratetbl);
+}
+
+static void
 minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
 {
 	u8 tmp_tp_rate[MAX_THR_RATES];
@@ -161,6 +205,8 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
 
 	/* Reset update timer */
 	mi->stats_update = jiffies;
+
+	minstrel_update_rates(mp, mi);
 }
 
 static void
@@ -209,9 +255,9 @@ minstrel_get_retry_count(struct minstrel_rate *mr,
 {
 	unsigned int retry = mr->adjusted_retry_count;
 
-	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+	if (info->control.use_rts)
 		retry = max(2U, min(mr->retry_count_rtscts, retry));
-	else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
+	else if (info->control.use_cts_prot)
 		retry = max(2U, min(mr->retry_count_cts, retry));
 	return retry;
 }
@@ -240,13 +286,12 @@ minstrel_get_rate(void *priv, struct ieee80211_sta *sta,
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct minstrel_sta_info *mi = priv_sta;
 	struct minstrel_priv *mp = priv;
-	struct ieee80211_tx_rate *ar = info->control.rates;
-	unsigned int ndx, sample_ndx = 0;
+	struct ieee80211_tx_rate *rate = &info->control.rates[0];
+	struct minstrel_rate *msr, *mr;
+	unsigned int ndx;
 	bool mrr_capable;
-	bool indirect_rate_sampling = false;
-	bool rate_sampling = false;
-	int i, delta;
-	int mrr_ndx[3];
+	bool prev_sample = mi->prev_sample;
+	int delta;
 	int sampling_ratio;
 
 	/* management/no-ack frames do not use rate control */
@@ -262,107 +307,75 @@ minstrel_get_rate(void *priv, struct ieee80211_sta *sta,
 	else
 		sampling_ratio = mp->lookaround_rate;
 
-	/* init rateindex [ndx] with max throughput rate */
-	ndx = mi->max_tp_rate[0];
-
 	/* increase sum packet counter */
 	mi->packet_count++;
 
 	delta = (mi->packet_count * sampling_ratio / 100) -
 			(mi->sample_count + mi->sample_deferred / 2);
 
-	/* delta > 0: sampling required */
-	if ((delta > 0) && (mrr_capable || !mi->prev_sample)) {
-		struct minstrel_rate *msr;
-		if (mi->packet_count >= 10000) {
-			mi->sample_deferred = 0;
-			mi->sample_count = 0;
-			mi->packet_count = 0;
-		} else if (delta > mi->n_rates * 2) {
-			/* With multi-rate retry, not every planned sample
-			 * attempt actually gets used, due to the way the retry
-			 * chain is set up - [max_tp,sample,prob,lowest] for
-			 * sample_rate < max_tp.
-			 *
-			 * If there's too much sampling backlog and the link
-			 * starts getting worse, minstrel would start bursting
-			 * out lots of sampling frames, which would result
-			 * in a large throughput loss. */
-			mi->sample_count += (delta - mi->n_rates * 2);
-		}
+	/* delta < 0: no sampling required */
+	mi->prev_sample = false;
+	if (delta < 0 || (!mrr_capable && prev_sample))
+		return;
 
-		/* get next random rate sample */
-		sample_ndx = minstrel_get_next_sample(mi);
-		msr = &mi->r[sample_ndx];
-		rate_sampling = true;
-
-		/* Decide if direct ( 1st mrr stage) or indirect (2nd mrr stage)
-		 * rate sampling method should be used.
-		 * Respect such rates that are not sampled for 20 interations.
-		 */
-		if (mrr_capable &&
-		    msr->perfect_tx_time > mi->r[ndx].perfect_tx_time &&
-		    msr->sample_skipped < 20)
-				indirect_rate_sampling = true;
-
-		if (!indirect_rate_sampling) {
-			if (msr->sample_limit != 0) {
-				ndx = sample_ndx;
-				mi->sample_count++;
-				if (msr->sample_limit > 0)
-					msr->sample_limit--;
-			} else
-				rate_sampling = false;
-		} else {
-			/* Only use IEEE80211_TX_CTL_RATE_CTRL_PROBE to mark
-			 * packets that have the sampling rate deferred to the
-			 * second MRR stage. Increase the sample counter only
-			 * if the deferred sample rate was actually used.
-			 * Use the sample_deferred counter to make sure that
-			 * the sampling is not done in large bursts */
-			info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
-			mi->sample_deferred++;
-		}
+	if (mi->packet_count >= 10000) {
+		mi->sample_deferred = 0;
+		mi->sample_count = 0;
+		mi->packet_count = 0;
+	} else if (delta > mi->n_rates * 2) {
+		/* With multi-rate retry, not every planned sample
+		 * attempt actually gets used, due to the way the retry
+		 * chain is set up - [max_tp,sample,prob,lowest] for
+		 * sample_rate < max_tp.
+		 *
+		 * If there's too much sampling backlog and the link
+		 * starts getting worse, minstrel would start bursting
+		 * out lots of sampling frames, which would result
+		 * in a large throughput loss. */
+		mi->sample_count += (delta - mi->n_rates * 2);
+	}
+
+	/* get next random rate sample */
+	ndx = minstrel_get_next_sample(mi);
+	msr = &mi->r[ndx];
+	mr = &mi->r[mi->max_tp_rate[0]];
+
+	/* Decide if direct ( 1st mrr stage) or indirect (2nd mrr stage)
+	 * rate sampling method should be used.
+	 * Respect such rates that are not sampled for 20 interations.
+	 */
+	if (mrr_capable &&
+	    msr->perfect_tx_time > mr->perfect_tx_time &&
+	    msr->sample_skipped < 20) {
+		/* Only use IEEE80211_TX_CTL_RATE_CTRL_PROBE to mark
+		 * packets that have the sampling rate deferred to the
+		 * second MRR stage. Increase the sample counter only
+		 * if the deferred sample rate was actually used.
+		 * Use the sample_deferred counter to make sure that
+		 * the sampling is not done in large bursts */
+		info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+		rate++;
+		mi->sample_deferred++;
+	} else {
+		if (!msr->sample_limit != 0)
+			return;
+
+		mi->sample_count++;
+		if (msr->sample_limit > 0)
+			msr->sample_limit--;
 	}
-	mi->prev_sample = rate_sampling;
 
 	/* If we're not using MRR and the sampling rate already
 	 * has a probability of >95%, we shouldn't be attempting
 	 * to use it, as this only wastes precious airtime */
-	if (!mrr_capable && rate_sampling &&
+	if (!mrr_capable &&
 	   (mi->r[ndx].probability > MINSTREL_FRAC(95, 100)))
-		ndx = mi->max_tp_rate[0];
-
-	/* mrr setup for 1st stage */
-	ar[0].idx = mi->r[ndx].rix;
-	ar[0].count = minstrel_get_retry_count(&mi->r[ndx], info);
-
-	/* non mrr setup for 2nd stage */
-	if (!mrr_capable) {
-		if (!rate_sampling)
-			ar[0].count = mp->max_retry;
-		ar[1].idx = mi->lowest_rix;
-		ar[1].count = mp->max_retry;
 		return;
-	}
 
-	/* mrr setup for 2nd stage */
-	if (rate_sampling) {
-		if (indirect_rate_sampling)
-			mrr_ndx[0] = sample_ndx;
-		else
-			mrr_ndx[0] = mi->max_tp_rate[0];
-	} else {
-		mrr_ndx[0] = mi->max_tp_rate[1];
-	}
+	mi->prev_sample = true;
 
-	/* mrr setup for 3rd & 4th stage */
-	mrr_ndx[1] = mi->max_prob_rate;
-	mrr_ndx[2] = 0;
-	for (i = 1; i < 4; i++) {
-		ar[i].idx = mi->r[mrr_ndx[i - 1]].rix;
-		ar[i].count = mi->r[mrr_ndx[i - 1]].adjusted_retry_count;
-	}
+	rate->idx = mi->r[ndx].rix;
+	rate->count = minstrel_get_retry_count(&mi->r[ndx], info);
 }
 
 
@@ -412,12 +425,16 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 	unsigned int i, n = 0;
 	unsigned int t_slot = 9; /* FIXME: get real slot time */
 
+	mi->sta = sta;
 	mi->lowest_rix = rate_lowest_index(sband, sta);
 	ctl_rate = &sband->bitrates[mi->lowest_rix];
 	mi->sp_ack_dur = ieee80211_frame_duration(sband->band, 10,
 				ctl_rate->bitrate,
 				!!(ctl_rate->flags & IEEE80211_RATE_ERP_G), 1);
 
+	memset(mi->max_tp_rate, 0, sizeof(mi->max_tp_rate));
+	mi->max_prob_rate = 0;
+
 	for (i = 0; i < sband->n_bitrates; i++) {
 		struct minstrel_rate *mr = &mi->r[n];
 		unsigned int tx_time = 0, tx_time_cts = 0, tx_time_rtscts = 0;
@@ -460,6 +477,8 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 		} while ((tx_time < mp->segment_size) &&
 				(++mr->retry_count < mp->max_retry));
 		mr->adjusted_retry_count = mr->retry_count;
+		if (!(sband->bitrates[i].flags & IEEE80211_RATE_ERP_G))
+			mr->retry_count_cts = mr->retry_count;
 	}
 
 	for (i = n; i < sband->n_bitrates; i++) {
@@ -471,6 +490,7 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
 	mi->stats_update = jiffies;
 
 	init_sample_table(mi);
+	minstrel_update_rates(mp, mi);
 }
 
 static void *
diff --git a/net/mac80211/rc80211_minstrel.h b/net/mac80211/rc80211_minstrel.h
index 85ebf42cb46d..f4301f4b2e41 100644
--- a/net/mac80211/rc80211_minstrel.h
+++ b/net/mac80211/rc80211_minstrel.h
@@ -9,7 +9,8 @@
 #ifndef __RC_MINSTREL_H
 #define __RC_MINSTREL_H
 
-#define EWMA_LEVEL	75	/* ewma weighting factor [%] */
+#define EWMA_LEVEL	96	/* ewma weighting factor [/EWMA_DIV] */
+#define EWMA_DIV	128
 #define SAMPLE_COLUMNS	10	/* number of columns in sample table */
 
 
@@ -27,7 +28,7 @@
 static inline int
 minstrel_ewma(int old, int new, int weight)
 {
-	return (new * (100 - weight) + old * weight) / 100;
+	return (new * (EWMA_DIV - weight) + old * weight) / EWMA_DIV;
 }
 
 
@@ -62,6 +63,8 @@ struct minstrel_rate {
 };
 
 struct minstrel_sta_info {
+	struct ieee80211_sta *sta;
+
 	unsigned long stats_update;
 	unsigned int sp_ack_dur;
 	unsigned int rate_avg;
diff --git a/net/mac80211/rc80211_minstrel_debugfs.c b/net/mac80211/rc80211_minstrel_debugfs.c
index d1048348d399..fd0b9ca1570e 100644
--- a/net/mac80211/rc80211_minstrel_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_debugfs.c
@@ -68,7 +68,7 @@ minstrel_stats_open(struct inode *inode, struct file *file)
 
 	file->private_data = ms;
 	p = ms->buf;
-	p += sprintf(p, "rate     throughput  ewma prob   this prob  "
+	p += sprintf(p, "rate      throughput  ewma prob  this prob  "
 			"this succ/attempt   success    attempts\n");
 	for (i = 0; i < mi->n_rates; i++) {
 		struct minstrel_rate *mr = &mi->r[i];
@@ -86,7 +86,7 @@ minstrel_stats_open(struct inode *inode, struct file *file)
 		eprob = MINSTREL_TRUNC(mr->probability * 1000);
 
 		p += sprintf(p, "  %6u.%1u   %6u.%1u   %6u.%1u        "
-				"%3u(%3u)   %8llu    %8llu\n",
+				"   %3u(%3u)  %8llu    %8llu\n",
 				tp / 10, tp % 10,
 				eprob / 10, eprob % 10,
 				prob / 10, prob % 10,
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index d2b264d1311d..5b2d3012b983 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -126,6 +126,9 @@ const struct mcs_group minstrel_mcs_groups[] = {
 
 static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES];
 
+static void
+minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi);
+
 /*
  * Look up an MCS group index based on mac80211 rate information
  */
@@ -244,6 +247,7 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
 	struct minstrel_rate_stats *mr;
 	int cur_prob, cur_prob_tp, cur_tp, cur_tp2;
 	int group, i, index;
+	bool mi_rates_valid = false;
 
 	if (mi->ampdu_packets > 0) {
 		mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len,
@@ -254,11 +258,10 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
 
 	mi->sample_slow = 0;
 	mi->sample_count = 0;
-	mi->max_tp_rate = 0;
-	mi->max_tp_rate2 = 0;
-	mi->max_prob_rate = 0;
 
 	for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
+		bool mg_rates_valid = false;
+
 		cur_prob = 0;
 		cur_prob_tp = 0;
 		cur_tp = 0;
@@ -268,15 +271,24 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
 		if (!mg->supported)
 			continue;
 
-		mg->max_tp_rate = 0;
-		mg->max_tp_rate2 = 0;
-		mg->max_prob_rate = 0;
 		mi->sample_count++;
 
 		for (i = 0; i < MCS_GROUP_RATES; i++) {
 			if (!(mg->supported & BIT(i)))
 				continue;
 
+			/* initialize rates selections starting indexes */
+			if (!mg_rates_valid) {
+				mg->max_tp_rate = mg->max_tp_rate2 =
+					mg->max_prob_rate = i;
+				if (!mi_rates_valid) {
+					mi->max_tp_rate = mi->max_tp_rate2 =
+						mi->max_prob_rate = i;
+					mi_rates_valid = true;
+				}
+				mg_rates_valid = true;
+			}
+
 			mr = &mg->rates[i];
 			mr->retry_updated = false;
 			index = MCS_GROUP_RATES * group + i;
@@ -456,7 +468,7 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
 	struct ieee80211_tx_rate *ar = info->status.rates;
 	struct minstrel_rate_stats *rate, *rate2;
 	struct minstrel_priv *mp = priv;
-	bool last;
+	bool last, update = false;
 	int i;
 
 	if (!msp->is_ht)
@@ -505,21 +517,29 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
 	rate = minstrel_get_ratestats(mi, mi->max_tp_rate);
 	if (rate->attempts > 30 &&
 	    MINSTREL_FRAC(rate->success, rate->attempts) <
-	    MINSTREL_FRAC(20, 100))
+	    MINSTREL_FRAC(20, 100)) {
 		minstrel_downgrade_rate(mi, &mi->max_tp_rate, true);
+		update = true;
+	}
 
 	rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate2);
 	if (rate2->attempts > 30 &&
 	    MINSTREL_FRAC(rate2->success, rate2->attempts) <
-	    MINSTREL_FRAC(20, 100))
+	    MINSTREL_FRAC(20, 100)) {
 		minstrel_downgrade_rate(mi, &mi->max_tp_rate2, false);
+		update = true;
+	}
 
 	if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000)) {
+		update = true;
 		minstrel_ht_update_stats(mp, mi);
 		if (!(info->flags & IEEE80211_TX_CTL_AMPDU) &&
 		    mi->max_prob_rate / MCS_GROUP_RATES != MINSTREL_CCK_GROUP)
 			minstrel_aggr_check(sta, skb);
 	}
+
+	if (update)
+		minstrel_ht_update_rates(mp, mi);
 }
 
 static void
@@ -583,36 +603,71 @@ minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
 
 static void
 minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
-                     struct ieee80211_tx_rate *rate, int index,
-                     bool sample, bool rtscts)
+                     struct ieee80211_sta_rates *ratetbl, int offset, int index)
 {
 	const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
 	struct minstrel_rate_stats *mr;
+	u8 idx;
+	u16 flags;
 
 	mr = minstrel_get_ratestats(mi, index);
 	if (!mr->retry_updated)
 		minstrel_calc_retransmit(mp, mi, index);
 
-	if (sample)
-		rate->count = 1;
-	else if (mr->probability < MINSTREL_FRAC(20, 100))
-		rate->count = 2;
-	else if (rtscts)
-		rate->count = mr->retry_count_rtscts;
-	else
-		rate->count = mr->retry_count;
-
-	rate->flags = 0;
-	if (rtscts)
-		rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
+	if (mr->probability < MINSTREL_FRAC(20, 100) || !mr->retry_count) {
+		ratetbl->rate[offset].count = 2;
+		ratetbl->rate[offset].count_rts = 2;
+		ratetbl->rate[offset].count_cts = 2;
+	} else {
+		ratetbl->rate[offset].count = mr->retry_count;
+		ratetbl->rate[offset].count_cts = mr->retry_count;
+		ratetbl->rate[offset].count_rts = mr->retry_count_rtscts;
+	}
 
 	if (index / MCS_GROUP_RATES == MINSTREL_CCK_GROUP) {
-		rate->idx = mp->cck_rates[index % ARRAY_SIZE(mp->cck_rates)];
+		idx = mp->cck_rates[index % ARRAY_SIZE(mp->cck_rates)];
+		flags = 0;
+	} else {
+		idx = index % MCS_GROUP_RATES +
+		      (group->streams - 1) * MCS_GROUP_RATES;
+		flags = IEEE80211_TX_RC_MCS | group->flags;
+	}
+
+	if (offset > 0) {
+		ratetbl->rate[offset].count = ratetbl->rate[offset].count_rts;
+		flags |= IEEE80211_TX_RC_USE_RTS_CTS;
+	}
+
+	ratetbl->rate[offset].idx = idx;
+	ratetbl->rate[offset].flags = flags;
+}
+
+static void
+minstrel_ht_update_rates(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
+{
+	struct ieee80211_sta_rates *rates;
+	int i = 0;
+
+	rates = kzalloc(sizeof(*rates), GFP_ATOMIC);
+	if (!rates)
 		return;
+
+	/* Start with max_tp_rate */
+	minstrel_ht_set_rate(mp, mi, rates, i++, mi->max_tp_rate);
+
+	if (mp->hw->max_rates >= 3) {
+		/* At least 3 tx rates supported, use max_tp_rate2 next */
+		minstrel_ht_set_rate(mp, mi, rates, i++, mi->max_tp_rate2);
+	}
+
+	if (mp->hw->max_rates >= 2) {
+		/*
+		 * At least 2 tx rates supported, use max_prob_rate next */
+		minstrel_ht_set_rate(mp, mi, rates, i++, mi->max_prob_rate);
 	}
 
-	rate->flags |= IEEE80211_TX_RC_MCS | group->flags;
-	rate->idx = index % MCS_GROUP_RATES + (group->streams - 1) * MCS_GROUP_RATES;
+	rates->rate[i].idx = -1;
+	rate_control_set_rates(mp->hw, mi->sta, rates);
 }
 
 static inline int
@@ -702,13 +757,13 @@ static void
 minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
                      struct ieee80211_tx_rate_control *txrc)
 {
+	const struct mcs_group *sample_group;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
-	struct ieee80211_tx_rate *ar = info->status.rates;
+	struct ieee80211_tx_rate *rate = &info->status.rates[0];
 	struct minstrel_ht_sta_priv *msp = priv_sta;
 	struct minstrel_ht_sta *mi = &msp->ht;
 	struct minstrel_priv *mp = priv;
 	int sample_idx;
-	bool sample = false;
 
 	if (rate_control_send_low(sta, priv_sta, txrc))
 		return;
@@ -736,51 +791,6 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
 	}
 #endif
 
-	if (sample_idx >= 0) {
-		sample = true;
-		minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
-			true, false);
-		info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
-	} else {
-		minstrel_ht_set_rate(mp, mi, &ar[0], mi->max_tp_rate,
-			false, false);
-	}
-
-	if (mp->hw->max_rates >= 3) {
-		/*
-		 * At least 3 tx rates supported, use
-		 * sample_rate -> max_tp_rate -> max_prob_rate for sampling and
-		 * max_tp_rate -> max_tp_rate2 -> max_prob_rate by default.
-		 */
-		if (sample_idx >= 0)
-			minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate,
-				false, false);
-		else
-			minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate2,
-				false, true);
-
-		minstrel_ht_set_rate(mp, mi, &ar[2], mi->max_prob_rate,
-				     false, !sample);
-
-		ar[3].count = 0;
-		ar[3].idx = -1;
-	} else if (mp->hw->max_rates == 2) {
-		/*
-		 * Only 2 tx rates supported, use
-		 * sample_rate -> max_prob_rate for sampling and
-		 * max_tp_rate -> max_prob_rate by default.
-		 */
-		minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_prob_rate,
-				     false, !sample);
-
-		ar[2].count = 0;
-		ar[2].idx = -1;
-	} else {
-		/* Not using MRR, only use the first rate */
-		ar[1].count = 0;
-		ar[1].idx = -1;
-	}
-
 	mi->total_packets++;
 
 	/* wraparound */
@@ -788,6 +798,16 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
 		mi->total_packets = 0;
 		mi->sample_packets = 0;
 	}
+
+	if (sample_idx < 0)
+		return;
+
+	sample_group = &minstrel_mcs_groups[sample_idx / MCS_GROUP_RATES];
+	info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+	rate->idx = sample_idx % MCS_GROUP_RATES +
+		    (sample_group->streams - 1) * MCS_GROUP_RATES;
+	rate->flags = IEEE80211_TX_RC_MCS | sample_group->flags;
+	rate->count = 1;
 }
 
 static void
@@ -837,6 +857,8 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 
 	msp->is_ht = true;
 	memset(mi, 0, sizeof(*mi));
+
+	mi->sta = sta;
 	mi->stats_update = jiffies;
 
 	ack_dur = ieee80211_frame_duration(sband->band, 10, 60, 1, 1);
@@ -898,6 +920,10 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 	if (!n_supported)
 		goto use_legacy;
 
+	/* create an initial rate table with the lowest supported rates */
+	minstrel_ht_update_stats(mp, mi);
+	minstrel_ht_update_rates(mp, mi);
+
 	return;
 
 use_legacy:
diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
index 9b16e9de9923..d655586773ac 100644
--- a/net/mac80211/rc80211_minstrel_ht.h
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -65,6 +65,8 @@ struct minstrel_mcs_group_data {
 };
 
 struct minstrel_ht_sta {
+	struct ieee80211_sta *sta;
+
 	/* ampdu length (average, per sampling interval) */
 	unsigned int ampdu_len;
 	unsigned int ampdu_packets;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 2528b5a4d6d4..c8447af76ead 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2085,6 +2085,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	}
 
 	fwd_hdr =  (struct ieee80211_hdr *) fwd_skb->data;
+	fwd_hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_RETRY);
 	info = IEEE80211_SKB_CB(fwd_skb);
 	memset(info, 0, sizeof(*info));
 	info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
@@ -2423,6 +2424,22 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 		}
 
 		break;
+	case WLAN_CATEGORY_PUBLIC:
+		if (len < IEEE80211_MIN_ACTION_SIZE + 1)
+			goto invalid;
+		if (sdata->vif.type != NL80211_IFTYPE_STATION)
+			break;
+		if (!rx->sta)
+			break;
+		if (!ether_addr_equal(mgmt->bssid, sdata->u.mgd.bssid))
+			break;
+		if (mgmt->u.action.u.ext_chan_switch.action_code !=
+				WLAN_PUB_ACTION_EXT_CHANSW_ANN)
+			break;
+		if (len < offsetof(struct ieee80211_mgmt,
+				   u.action.u.ext_chan_switch.variable))
+			goto invalid;
+		goto queue;
 	case WLAN_CATEGORY_VHT:
 		if (sdata->vif.type != NL80211_IFTYPE_STATION &&
 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
@@ -2506,10 +2523,6 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 			ieee80211_process_measurement_req(sdata, mgmt, len);
 			goto handled;
 		case WLAN_ACTION_SPCT_CHL_SWITCH:
-			if (len < (IEEE80211_MIN_ACTION_SIZE +
-				   sizeof(mgmt->u.action.u.chan_switch)))
-				break;
-
 			if (sdata->vif.type != NL80211_IFTYPE_STATION)
 				break;
 
@@ -3042,7 +3055,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 		    !ieee80211_is_probe_resp(hdr->frame_control) &&
 		    !ieee80211_is_beacon(hdr->frame_control))
 			return 0;
-		if (!ether_addr_equal(sdata->vif.addr, hdr->addr1))
+		if (!ether_addr_equal(sdata->vif.addr, hdr->addr1) &&
+		    !multicast)
 			status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
 		break;
 	default:
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index cb34cbbaa20c..99b103921a4b 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -98,9 +98,8 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 	}
 
 	/* save the ERP value so that it is available at association time */
-	if (elems->erp_info && elems->erp_info_len >= 1 &&
-			(!elems->parse_error ||
-			 !(bss->valid_data & IEEE80211_BSS_VALID_ERP))) {
+	if (elems->erp_info && (!elems->parse_error ||
+				!(bss->valid_data & IEEE80211_BSS_VALID_ERP))) {
 		bss->erp_value = elems->erp_info[0];
 		bss->has_erp_value = true;
 		if (!elems->parse_error)
@@ -182,7 +181,7 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
 	if (baselen > skb->len)
 		return;
 
-	ieee802_11_parse_elems(elements, skb->len - baselen, &elems);
+	ieee802_11_parse_elems(elements, skb->len - baselen, false, &elems);
 
 	channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
 
@@ -384,7 +383,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
 {
 	int i;
 	struct ieee80211_sub_if_data *sdata;
-	enum ieee80211_band band = local->hw.conf.channel->band;
+	enum ieee80211_band band = local->hw.conf.chandef.chan->band;
 	u32 tx_flags;
 
 	tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
@@ -401,7 +400,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
 			local->scan_req->ssids[i].ssid_len,
 			local->scan_req->ie, local->scan_req->ie_len,
 			local->scan_req->rates[band], false,
-			tx_flags, local->hw.conf.channel, true);
+			tx_flags, local->hw.conf.chandef.chan, true);
 
 	/*
 	 * After sending probe requests, wait for probe responses
@@ -467,7 +466,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
 	if (local->ops->hw_scan) {
 		__set_bit(SCAN_HW_SCANNING, &local->scanning);
 	} else if ((req->n_channels == 1) &&
-		   (req->channels[0] == local->_oper_channel)) {
+		   (req->channels[0] == local->_oper_chandef.chan)) {
 		/*
 		 * If we are scanning only on the operating channel
 		 * then we do not need to stop normal activities
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index c5899797a8d4..c215fafd7a2f 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -28,27 +28,27 @@
 #define VIF_PR_FMT	" vif:%s(%d%s)"
 #define VIF_PR_ARG	__get_str(vif_name), __entry->vif_type, __entry->p2p ? "/p2p" : ""
 
-#define CHANDEF_ENTRY	__field(u32, control_freq)				\
-			__field(u32, chan_width)				\
-			__field(u32, center_freq1)				\
+#define CHANDEF_ENTRY	__field(u32, control_freq)					\
+			__field(u32, chan_width)					\
+			__field(u32, center_freq1)					\
 			__field(u32, center_freq2)
-#define CHANDEF_ASSIGN(c)							\
-			__entry->control_freq = (c)->chan->center_freq;		\
-			__entry->chan_width = (c)->width;			\
-			__entry->center_freq1 = (c)->center_freq1;		\
+#define CHANDEF_ASSIGN(c)								\
+			__entry->control_freq = (c)->chan ? (c)->chan->center_freq : 0;	\
+			__entry->chan_width = (c)->width;				\
+			__entry->center_freq1 = (c)->center_freq1;			\
 			__entry->center_freq2 = (c)->center_freq2;
 #define CHANDEF_PR_FMT	" control:%d MHz width:%d center: %d/%d MHz"
-#define CHANDEF_PR_ARG	__entry->control_freq, __entry->chan_width,		\
+#define CHANDEF_PR_ARG	__entry->control_freq, __entry->chan_width,			\
 			__entry->center_freq1, __entry->center_freq2
 
-#define CHANCTX_ENTRY	CHANDEF_ENTRY						\
-			__field(u8, rx_chains_static)				\
+#define CHANCTX_ENTRY	CHANDEF_ENTRY							\
+			__field(u8, rx_chains_static)					\
 			__field(u8, rx_chains_dynamic)
-#define CHANCTX_ASSIGN	CHANDEF_ASSIGN(&ctx->conf.def)				\
-			__entry->rx_chains_static = ctx->conf.rx_chains_static;	\
+#define CHANCTX_ASSIGN	CHANDEF_ASSIGN(&ctx->conf.def)					\
+			__entry->rx_chains_static = ctx->conf.rx_chains_static;		\
 			__entry->rx_chains_dynamic = ctx->conf.rx_chains_dynamic
 #define CHANCTX_PR_FMT	CHANDEF_PR_FMT " chains:%d/%d"
-#define CHANCTX_PR_ARG	CHANDEF_PR_ARG,						\
+#define CHANCTX_PR_ARG	CHANDEF_PR_ARG,							\
 			__entry->rx_chains_static, __entry->rx_chains_dynamic
 
 
@@ -286,8 +286,7 @@ TRACE_EVENT(drv_config,
 		__field(u16, listen_interval)
 		__field(u8, long_frame_max_tx_count)
 		__field(u8, short_frame_max_tx_count)
-		__field(int, center_freq)
-		__field(int, channel_type)
+		CHANDEF_ENTRY
 		__field(int, smps)
 	),
 
@@ -303,15 +302,13 @@ TRACE_EVENT(drv_config,
 			local->hw.conf.long_frame_max_tx_count;
 		__entry->short_frame_max_tx_count =
 			local->hw.conf.short_frame_max_tx_count;
-		__entry->center_freq = local->hw.conf.channel ?
-					local->hw.conf.channel->center_freq : 0;
-		__entry->channel_type = local->hw.conf.channel_type;
+		CHANDEF_ASSIGN(&local->hw.conf.chandef)
 		__entry->smps = local->hw.conf.smps_mode;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " ch:%#x freq:%d",
-		LOCAL_PR_ARG, __entry->changed, __entry->center_freq
+		LOCAL_PR_FMT " ch:%#x" CHANDEF_PR_FMT,
+		LOCAL_PR_ARG, __entry->changed, CHANDEF_PR_ARG
 	)
 );
 
@@ -359,8 +356,7 @@ TRACE_EVENT(drv_bss_info_changed,
 		__dynamic_array(u8, ssid, info->ssid_len);
 		__field(bool, hidden_ssid);
 		__field(int, txpower)
-		__field(u8, p2p_ctwindow)
-		__field(bool, p2p_oppps)
+		__field(u8, p2p_oppps_ctwindow)
 	),
 
 	TP_fast_assign(
@@ -400,8 +396,7 @@ TRACE_EVENT(drv_bss_info_changed,
 		memcpy(__get_dynamic_array(ssid), info->ssid, info->ssid_len);
 		__entry->hidden_ssid = info->hidden_ssid;
 		__entry->txpower = info->txpower;
-		__entry->p2p_ctwindow = info->p2p_ctwindow;
-		__entry->p2p_oppps = info->p2p_oppps;
+		__entry->p2p_oppps_ctwindow = info->p2p_noa_attr.oppps_ctwindow;
 	),
 
 	TP_printk(
@@ -995,23 +990,23 @@ TRACE_EVENT(drv_channel_switch,
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		CHANDEF_ENTRY
 		__field(u64, timestamp)
 		__field(bool, block_tx)
-		__field(u16, freq)
 		__field(u8, count)
 	),
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		CHANDEF_ASSIGN(&ch_switch->chandef)
 		__entry->timestamp = ch_switch->timestamp;
 		__entry->block_tx = ch_switch->block_tx;
-		__entry->freq = ch_switch->channel->center_freq;
 		__entry->count = ch_switch->count;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " new freq:%u count:%d",
-		LOCAL_PR_ARG, __entry->freq, __entry->count
+		LOCAL_PR_FMT " new " CHANDEF_PR_FMT " count:%d",
+		LOCAL_PR_ARG, CHANDEF_PR_ARG, __entry->count
 	)
 );
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 9e67cc97b87b..9972e07a2f96 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -48,15 +48,15 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 
 	/* assume HW handles this */
-	if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
+	if (tx->rate.flags & IEEE80211_TX_RC_MCS)
 		return 0;
 
 	/* uh huh? */
-	if (WARN_ON_ONCE(info->control.rates[0].idx < 0))
+	if (WARN_ON_ONCE(tx->rate.idx < 0))
 		return 0;
 
 	sband = local->hw.wiphy->bands[info->band];
-	txrate = &sband->bitrates[info->control.rates[0].idx];
+	txrate = &sband->bitrates[tx->rate.idx];
 
 	erp = txrate->flags & IEEE80211_RATE_ERP_G;
 
@@ -617,11 +617,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
 	struct ieee80211_hdr *hdr = (void *)tx->skb->data;
 	struct ieee80211_supported_band *sband;
-	struct ieee80211_rate *rate;
-	int i;
 	u32 len;
-	bool inval = false, rts = false, short_preamble = false;
 	struct ieee80211_tx_rate_control txrc;
+	struct ieee80211_sta_rates *ratetbl = NULL;
 	bool assoc = false;
 
 	memset(&txrc, 0, sizeof(txrc));
@@ -642,18 +640,23 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 		txrc.max_rate_idx = -1;
 	else
 		txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
-	memcpy(txrc.rate_idx_mcs_mask,
-	       tx->sdata->rc_rateidx_mcs_mask[info->band],
-	       sizeof(txrc.rate_idx_mcs_mask));
+
+	if (tx->sdata->rc_has_mcs_mask[info->band])
+		txrc.rate_idx_mcs_mask =
+			tx->sdata->rc_rateidx_mcs_mask[info->band];
+
 	txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
 		    tx->sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
 		    tx->sdata->vif.type == NL80211_IFTYPE_ADHOC);
 
 	/* set up RTS protection if desired */
 	if (len > tx->local->hw.wiphy->rts_threshold) {
-		txrc.rts = rts = true;
+		txrc.rts = true;
 	}
 
+	info->control.use_rts = txrc.rts;
+	info->control.use_cts_prot = tx->sdata->vif.bss_conf.use_cts_prot;
+
 	/*
 	 * Use short preamble if the BSS can handle it, but not for
 	 * management frames unless we know the receiver can handle
@@ -663,7 +666,9 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	if (tx->sdata->vif.bss_conf.use_short_preamble &&
 	    (ieee80211_is_data(hdr->frame_control) ||
 	     (tx->sta && test_sta_flag(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
-		txrc.short_preamble = short_preamble = true;
+		txrc.short_preamble = true;
+
+	info->control.short_preamble = txrc.short_preamble;
 
 	if (tx->sta)
 		assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC);
@@ -687,16 +692,38 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	 */
 	rate_control_get_rate(tx->sdata, tx->sta, &txrc);
 
-	if (unlikely(info->control.rates[0].idx < 0))
-		return TX_DROP;
+	if (tx->sta && !info->control.skip_table)
+		ratetbl = rcu_dereference(tx->sta->sta.rates);
+
+	if (unlikely(info->control.rates[0].idx < 0)) {
+		if (ratetbl) {
+			struct ieee80211_tx_rate rate = {
+				.idx = ratetbl->rate[0].idx,
+				.flags = ratetbl->rate[0].flags,
+				.count = ratetbl->rate[0].count
+			};
+
+			if (ratetbl->rate[0].idx < 0)
+				return TX_DROP;
+
+			tx->rate = rate;
+		} else {
+			return TX_DROP;
+		}
+	} else {
+		tx->rate = info->control.rates[0];
+	}
 
 	if (txrc.reported_rate.idx < 0) {
-		txrc.reported_rate = info->control.rates[0];
+		txrc.reported_rate = tx->rate;
 		if (tx->sta && ieee80211_is_data(hdr->frame_control))
 			tx->sta->last_tx_rate = txrc.reported_rate;
 	} else if (tx->sta)
 		tx->sta->last_tx_rate = txrc.reported_rate;
 
+	if (ratetbl)
+		return TX_CONTINUE;
+
 	if (unlikely(!info->control.rates[0].count))
 		info->control.rates[0].count = 1;
 
@@ -704,91 +731,6 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 			 (info->flags & IEEE80211_TX_CTL_NO_ACK)))
 		info->control.rates[0].count = 1;
 
-	if (is_multicast_ether_addr(hdr->addr1)) {
-		/*
-		 * XXX: verify the rate is in the basic rateset
-		 */
-		return TX_CONTINUE;
-	}
-
-	/*
-	 * set up the RTS/CTS rate as the fastest basic rate
-	 * that is not faster than the data rate
-	 *
-	 * XXX: Should this check all retry rates?
-	 */
-	if (!(info->control.rates[0].flags & IEEE80211_TX_RC_MCS)) {
-		s8 baserate = 0;
-
-		rate = &sband->bitrates[info->control.rates[0].idx];
-
-		for (i = 0; i < sband->n_bitrates; i++) {
-			/* must be a basic rate */
-			if (!(tx->sdata->vif.bss_conf.basic_rates & BIT(i)))
-				continue;
-			/* must not be faster than the data rate */
-			if (sband->bitrates[i].bitrate > rate->bitrate)
-				continue;
-			/* maximum */
-			if (sband->bitrates[baserate].bitrate <
-			     sband->bitrates[i].bitrate)
-				baserate = i;
-		}
-
-		info->control.rts_cts_rate_idx = baserate;
-	}
-
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		/*
-		 * make sure there's no valid rate following
-		 * an invalid one, just in case drivers don't
-		 * take the API seriously to stop at -1.
-		 */
-		if (inval) {
-			info->control.rates[i].idx = -1;
-			continue;
-		}
-		if (info->control.rates[i].idx < 0) {
-			inval = true;
-			continue;
-		}
-
-		/*
-		 * For now assume MCS is already set up correctly, this
-		 * needs to be fixed.
-		 */
-		if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) {
-			WARN_ON(info->control.rates[i].idx > 76);
-			continue;
-		}
-
-		/* set up RTS protection if desired */
-		if (rts)
-			info->control.rates[i].flags |=
-				IEEE80211_TX_RC_USE_RTS_CTS;
-
-		/* RC is busted */
-		if (WARN_ON_ONCE(info->control.rates[i].idx >=
-				 sband->n_bitrates)) {
-			info->control.rates[i].idx = -1;
-			continue;
-		}
-
-		rate = &sband->bitrates[info->control.rates[i].idx];
-
-		/* set up short preamble */
-		if (short_preamble &&
-		    rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
-			info->control.rates[i].flags |=
-				IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
-
-		/* set up G protection */
-		if (!rts && tx->sdata->vif.bss_conf.use_cts_prot &&
-		    rate->flags & IEEE80211_RATE_ERP_G)
-			info->control.rates[i].flags |=
-				IEEE80211_TX_RC_USE_CTS_PROTECT;
-	}
-
 	return TX_CONTINUE;
 }
 
@@ -1709,7 +1651,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
 	if (chanctx_conf)
 		chan = chanctx_conf->def.chan;
 	else if (!local->use_chanctx)
-		chan = local->_oper_channel;
+		chan = local->_oper_chandef.chan;
 	else
 		goto fail_rcu;
 
@@ -1843,7 +1785,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		 * This is the exception! WDS style interfaces are prohibited
 		 * when channel contexts are in used so this must be valid
 		 */
-		band = local->hw.conf.channel->band;
+		band = local->hw.conf.chandef.chan->band;
 		break;
 #ifdef CONFIG_MAC80211_MESH
 	case NL80211_IFTYPE_MESH_POINT:
@@ -2442,14 +2384,17 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 	} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 		struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 		struct ieee80211_hdr *hdr;
-		struct sk_buff *presp = rcu_dereference(ifibss->presp);
+		struct beacon_data *presp = rcu_dereference(ifibss->presp);
 
 		if (!presp)
 			goto out;
 
-		skb = skb_copy(presp, GFP_ATOMIC);
+		skb = dev_alloc_skb(local->tx_headroom + presp->head_len);
 		if (!skb)
 			goto out;
+		skb_reserve(skb, local->tx_headroom);
+		memcpy(skb_put(skb, presp->head_len), presp->head,
+		       presp->head_len);
 
 		hdr = (struct ieee80211_hdr *) skb->data;
 		hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
@@ -2499,8 +2444,6 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		txrc.max_rate_idx = -1;
 	else
 		txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
-	memcpy(txrc.rate_idx_mcs_mask, sdata->rc_rateidx_mcs_mask[band],
-	       sizeof(txrc.rate_idx_mcs_mask));
 	txrc.bss = true;
 	rate_control_get_rate(sdata, NULL, &txrc);
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index a7368870c8ee..3f87fa468b1f 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -485,7 +485,8 @@ int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
 		return true;
 
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
-	ret = !!local->queue_stop_reasons[queue];
+	ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
+		       &local->queue_stop_reasons[queue]);
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 	return ret;
 }
@@ -660,7 +661,7 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
 
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
+u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, bool action,
 			       struct ieee802_11_elems *elems,
 			       u64 filter, u32 crc)
 {
@@ -668,6 +669,7 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 	u8 *pos = start;
 	bool calc_crc = filter != 0;
 	DECLARE_BITMAP(seen_elems, 256);
+	const u8 *ie;
 
 	bitmap_zero(seen_elems, 256);
 	memset(elems, 0, sizeof(*elems));
@@ -715,6 +717,12 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 		case WLAN_EID_COUNTRY:
 		case WLAN_EID_PWR_CONSTRAINT:
 		case WLAN_EID_TIMEOUT_INTERVAL:
+		case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+		case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
+		/*
+		 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
+		 * that if the content gets bigger it might be needed more than once
+		 */
 			if (test_bit(id, seen_elems)) {
 				elems->parse_error = true;
 				left -= elen;
@@ -738,17 +746,11 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			elems->supp_rates = pos;
 			elems->supp_rates_len = elen;
 			break;
-		case WLAN_EID_FH_PARAMS:
-			elems->fh_params = pos;
-			elems->fh_params_len = elen;
-			break;
 		case WLAN_EID_DS_PARAMS:
-			elems->ds_params = pos;
-			elems->ds_params_len = elen;
-			break;
-		case WLAN_EID_CF_PARAMS:
-			elems->cf_params = pos;
-			elems->cf_params_len = elen;
+			if (elen >= 1)
+				elems->ds_params = pos;
+			else
+				elem_parse_failed = true;
 			break;
 		case WLAN_EID_TIM:
 			if (elen >= sizeof(struct ieee80211_tim_ie)) {
@@ -757,10 +759,6 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			} else
 				elem_parse_failed = true;
 			break;
-		case WLAN_EID_IBSS_PARAMS:
-			elems->ibss_params = pos;
-			elems->ibss_params_len = elen;
-			break;
 		case WLAN_EID_CHALLENGE:
 			elems->challenge = pos;
 			elems->challenge_len = elen;
@@ -790,8 +788,10 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			elems->rsn_len = elen;
 			break;
 		case WLAN_EID_ERP_INFO:
-			elems->erp_info = pos;
-			elems->erp_info_len = elen;
+			if (elen >= 1)
+				elems->erp_info = pos;
+			else
+				elem_parse_failed = true;
 			break;
 		case WLAN_EID_EXT_SUPP_RATES:
 			elems->ext_supp_rates = pos;
@@ -870,12 +870,47 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			}
 			elems->ch_switch_ie = (void *)pos;
 			break;
-		case WLAN_EID_QUIET:
-			if (!elems->quiet_elem) {
-				elems->quiet_elem = pos;
-				elems->quiet_elem_len = elen;
+		case WLAN_EID_EXT_CHANSWITCH_ANN:
+			if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->ext_chansw_ie = (void *)pos;
+			break;
+		case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+			if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->sec_chan_offs = (void *)pos;
+			break;
+		case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
+			if (!action ||
+			    elen != sizeof(*elems->wide_bw_chansw_ie)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->wide_bw_chansw_ie = (void *)pos;
+			break;
+		case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
+			if (action) {
+				elem_parse_failed = true;
+				break;
+			}
+			/*
+			 * This is a bit tricky, but as we only care about
+			 * the wide bandwidth channel switch element, so
+			 * just parse it out manually.
+			 */
+			ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
+					      pos, elen);
+			if (ie) {
+				if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
+					elems->wide_bw_chansw_ie =
+						(void *)(ie + 2);
+				else
+					elem_parse_failed = true;
 			}
-			elems->num_of_quiet_elem++;
 			break;
 		case WLAN_EID_COUNTRY:
 			elems->country_elem = pos;
@@ -889,8 +924,10 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 			elems->pwr_constr_elem = pos;
 			break;
 		case WLAN_EID_TIMEOUT_INTERVAL:
-			elems->timeout_int = pos;
-			elems->timeout_int_len = elen;
+			if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
+				elems->timeout_int = (void *)pos;
+			else
+				elem_parse_failed = true;
 			break;
 		default:
 			break;
@@ -911,12 +948,6 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
 	return crc;
 }
 
-void ieee802_11_parse_elems(u8 *start, size_t len,
-			    struct ieee802_11_elems *elems)
-{
-	ieee802_11_parse_elems_crc(start, len, elems, 0, 0);
-}
-
 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 			       bool bss_notify)
 {
@@ -1474,6 +1505,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	/* add interfaces */
 	sdata = rtnl_dereference(local->monitor_sdata);
 	if (sdata) {
+		/* in HW restart it exists already */
+		WARN_ON(local->resuming);
 		res = drv_add_interface(local, sdata);
 		if (WARN_ON(res)) {
 			rcu_assign_pointer(local->monitor_sdata, NULL);
@@ -1663,6 +1696,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	local->in_reconfig = false;
 	barrier();
 
+	if (local->monitors == local->open_count && local->monitors > 0)
+		ieee80211_add_virtual_monitor(local);
+
 	/*
 	 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
 	 * sessions can be established after a resume.
@@ -2056,7 +2092,7 @@ int ieee80211_ave_rssi(struct ieee80211_vif *vif)
 		/* non-managed type inferfaces */
 		return 0;
 	}
-	return ifmgd->ave_beacon_signal;
+	return ifmgd->ave_beacon_signal / 16;
 }
 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
 
@@ -2171,8 +2207,7 @@ void ieee80211_dfs_radar_detected_work(struct work_struct *work)
 		/* currently not handled */
 		WARN_ON(1);
 	else {
-		cfg80211_chandef_create(&chandef, local->hw.conf.channel,
-					local->hw.conf.channel_type);
+		chandef = local->hw.conf.chandef;
 		cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
 	}
 }
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 6ceee8e181ca..40d2527693da 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/rfkill.h>
 #include <linux/nfc.h>
 
 #include <net/genetlink.h>
@@ -58,6 +59,11 @@ int nfc_dev_up(struct nfc_dev *dev)
 
 	device_lock(&dev->dev);
 
+	if (dev->rfkill && rfkill_blocked(dev->rfkill)) {
+		rc = -ERFKILL;
+		goto error;
+	}
+
 	if (!device_is_registered(&dev->dev)) {
 		rc = -ENODEV;
 		goto error;
@@ -117,6 +123,24 @@ error:
 	return rc;
 }
 
+static int nfc_rfkill_set_block(void *data, bool blocked)
+{
+	struct nfc_dev *dev = data;
+
+	pr_debug("%s blocked %d", dev_name(&dev->dev), blocked);
+
+	if (!blocked)
+		return 0;
+
+	nfc_dev_down(dev);
+
+	return 0;
+}
+
+static const struct rfkill_ops nfc_rfkill_ops = {
+	.set_block = nfc_rfkill_set_block,
+};
+
 /**
  * nfc_start_poll - start polling for nfc targets
  *
@@ -143,6 +167,11 @@ int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols)
 		goto error;
 	}
 
+	if (!dev->dev_up) {
+		rc = -ENODEV;
+		goto error;
+	}
+
 	if (dev->polling) {
 		rc = -EBUSY;
 		goto error;
@@ -835,6 +864,15 @@ int nfc_register_device(struct nfc_dev *dev)
 		pr_debug("The userspace won't be notified that the device %s was added\n",
 			 dev_name(&dev->dev));
 
+	dev->rfkill = rfkill_alloc(dev_name(&dev->dev), &dev->dev,
+				   RFKILL_TYPE_NFC, &nfc_rfkill_ops, dev);
+	if (dev->rfkill) {
+		if (rfkill_register(dev->rfkill) < 0) {
+			rfkill_destroy(dev->rfkill);
+			dev->rfkill = NULL;
+		}
+	}
+
 	return 0;
 }
 EXPORT_SYMBOL(nfc_register_device);
@@ -852,6 +890,11 @@ void nfc_unregister_device(struct nfc_dev *dev)
 
 	id = dev->idx;
 
+	if (dev->rfkill) {
+		rfkill_unregister(dev->rfkill);
+		rfkill_destroy(dev->rfkill);
+	}
+
 	if (dev->ops->check_presence) {
 		device_lock(&dev->dev);
 		dev->shutting_down = true;
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c
index b75a9b3f9e89..094f7e27e910 100644
--- a/net/nfc/llcp/commands.c
+++ b/net/nfc/llcp/commands.c
@@ -420,7 +420,8 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
 	}
 
 	/* If the socket parameters are not set, use the local ones */
-	miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+	miux = be16_to_cpu(sock->miux) > LLCP_MAX_MIUX ?
+		local->miux : sock->miux;
 	rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
 
 	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
@@ -475,7 +476,8 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
 		return -ENODEV;
 
 	/* If the socket parameters are not set, use the local ones */
-	miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+	miux = be16_to_cpu(sock->miux) > LLCP_MAX_MIUX ?
+		local->miux : sock->miux;
 	rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
 
 	miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
@@ -656,6 +658,7 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 	struct nfc_llcp_local *local;
 	size_t frag_len = 0, remaining_len;
 	u8 *msg_data, *msg_ptr;
+	u16 remote_miu;
 
 	pr_debug("Send I frame len %zd\n", len);
 
@@ -692,9 +695,11 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 	remaining_len = len;
 	msg_ptr = msg_data;
 
-	while (remaining_len > 0) {
+	do {
+		remote_miu = sock->remote_miu > LLCP_MAX_MIU ?
+				local->remote_miu : sock->remote_miu;
 
-		frag_len = min_t(size_t, sock->remote_miu, remaining_len);
+		frag_len = min_t(size_t, remote_miu, remaining_len);
 
 		pr_debug("Fragment %zd bytes remaining %zd",
 			 frag_len, remaining_len);
@@ -706,7 +711,8 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 
 		skb_put(pdu, LLCP_SEQUENCE_SIZE);
 
-		memcpy(skb_put(pdu, frag_len), msg_ptr, frag_len);
+		if (likely(frag_len > 0))
+			memcpy(skb_put(pdu, frag_len), msg_ptr, frag_len);
 
 		skb_queue_tail(&sock->tx_queue, pdu);
 
@@ -718,7 +724,7 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
 
 		remaining_len -= frag_len;
 		msg_ptr += frag_len;
-	}
+	} while (remaining_len > 0);
 
 	kfree(msg_data);
 
@@ -732,6 +738,7 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
 	struct nfc_llcp_local *local;
 	size_t frag_len = 0, remaining_len;
 	u8 *msg_ptr, *msg_data;
+	u16 remote_miu;
 	int err;
 
 	pr_debug("Send UI frame len %zd\n", len);
@@ -752,9 +759,11 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
 	remaining_len = len;
 	msg_ptr = msg_data;
 
-	while (remaining_len > 0) {
+	do {
+		remote_miu = sock->remote_miu > LLCP_MAX_MIU ?
+				local->remote_miu : sock->remote_miu;
 
-		frag_len = min_t(size_t, sock->remote_miu, remaining_len);
+		frag_len = min_t(size_t, remote_miu, remaining_len);
 
 		pr_debug("Fragment %zd bytes remaining %zd",
 			 frag_len, remaining_len);
@@ -768,14 +777,15 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
 
 		pdu = llcp_add_header(pdu, dsap, ssap, LLCP_PDU_UI);
 
-		memcpy(skb_put(pdu, frag_len), msg_ptr, frag_len);
+		if (likely(frag_len > 0))
+			memcpy(skb_put(pdu, frag_len), msg_ptr, frag_len);
 
 		/* No need to check for the peer RW for UI frames */
 		skb_queue_tail(&local->tx_queue, pdu);
 
 		remaining_len -= frag_len;
 		msg_ptr += frag_len;
-	}
+	} while (remaining_len > 0);
 
 	kfree(msg_data);
 
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index 7de0368aff0c..9e483c8e52f8 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -31,6 +31,8 @@ static u8 llcp_magic[3] = {0x46, 0x66, 0x6d};
 
 static struct list_head llcp_devices;
 
+static void nfc_llcp_rx_skb(struct nfc_llcp_local *local, struct sk_buff *skb);
+
 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *sk)
 {
 	write_lock(&l->lock);
@@ -45,6 +47,12 @@ void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *sk)
 	write_unlock(&l->lock);
 }
 
+void nfc_llcp_socket_remote_param_init(struct nfc_llcp_sock *sock)
+{
+	sock->remote_rw = LLCP_DEFAULT_RW;
+	sock->remote_miu = LLCP_MAX_MIU + 1;
+}
+
 static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock)
 {
 	struct nfc_llcp_local *local = sock->local;
@@ -68,7 +76,7 @@ static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock)
 	}
 }
 
-static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,
+static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool device,
 				    int err)
 {
 	struct sock *sk;
@@ -108,21 +116,6 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,
 
 				bh_unlock_sock(accept_sk);
 			}
-
-			if (listen == true) {
-				bh_unlock_sock(sk);
-				continue;
-			}
-		}
-
-		/*
-		 * If we have a connection less socket bound, we keep it alive
-		 * if the device is still present.
-		 */
-		if (sk->sk_state == LLCP_BOUND && sk->sk_type == SOCK_DGRAM &&
-		    listen == true) {
-			bh_unlock_sock(sk);
-			continue;
 		}
 
 		if (err)
@@ -137,11 +130,8 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,
 
 	write_unlock(&local->sockets.lock);
 
-	/*
-	 * If we want to keep the listening sockets alive,
-	 * we don't touch the RAW ones.
-	 */
-	if (listen == true)
+	/* If we still have a device, we keep the RAW sockets alive */
+	if (device == true)
 		return;
 
 	write_lock(&local->raw_sockets.lock);
@@ -173,9 +163,9 @@ struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local)
 	return local;
 }
 
-static void local_cleanup(struct nfc_llcp_local *local, bool listen)
+static void local_cleanup(struct nfc_llcp_local *local)
 {
-	nfc_llcp_socket_release(local, listen, ENXIO);
+	nfc_llcp_socket_release(local, false, ENXIO);
 	del_timer_sync(&local->link_timer);
 	skb_queue_purge(&local->tx_queue);
 	cancel_work_sync(&local->tx_work);
@@ -194,7 +184,7 @@ static void local_release(struct kref *ref)
 	local = container_of(ref, struct nfc_llcp_local, ref);
 
 	list_del(&local->list);
-	local_cleanup(local, false);
+	local_cleanup(local);
 	kfree(local);
 }
 
@@ -1116,6 +1106,12 @@ static void nfc_llcp_recv_disc(struct nfc_llcp_local *local,
 	dsap = nfc_llcp_dsap(skb);
 	ssap = nfc_llcp_ssap(skb);
 
+	if ((dsap == 0) && (ssap == 0)) {
+		pr_debug("Connection termination");
+		nfc_dep_link_down(local->dev);
+		return;
+	}
+
 	llcp_sock = nfc_llcp_sock_get(local, dsap, ssap);
 	if (llcp_sock == NULL) {
 		nfc_llcp_send_dm(local, dsap, ssap, LLCP_DM_NOCONN);
@@ -1349,19 +1345,54 @@ exit:
 		nfc_llcp_send_snl_sdres(local, &llc_sdres_list, sdres_tlvs_len);
 }
 
-static void nfc_llcp_rx_work(struct work_struct *work)
+static void nfc_llcp_recv_agf(struct nfc_llcp_local *local, struct sk_buff *skb)
 {
-	struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local,
-						    rx_work);
-	u8 dsap, ssap, ptype;
-	struct sk_buff *skb;
+	u8 ptype;
+	u16 pdu_len;
+	struct sk_buff *new_skb;
 
-	skb = local->rx_pending;
-	if (skb == NULL) {
-		pr_debug("No pending SKB\n");
+	if (skb->len <= LLCP_HEADER_SIZE) {
+		pr_err("Malformed AGF PDU\n");
 		return;
 	}
 
+	skb_pull(skb, LLCP_HEADER_SIZE);
+
+	while (skb->len > LLCP_AGF_PDU_HEADER_SIZE) {
+		pdu_len = skb->data[0] << 8 | skb->data[1];
+
+		skb_pull(skb, LLCP_AGF_PDU_HEADER_SIZE);
+
+		if (pdu_len < LLCP_HEADER_SIZE || pdu_len > skb->len) {
+			pr_err("Malformed AGF PDU\n");
+			return;
+		}
+
+		ptype = nfc_llcp_ptype(skb);
+
+		if (ptype == LLCP_PDU_SYMM || ptype == LLCP_PDU_AGF)
+			goto next;
+
+		new_skb = nfc_alloc_recv_skb(pdu_len, GFP_KERNEL);
+		if (new_skb == NULL) {
+			pr_err("Could not allocate PDU\n");
+			return;
+		}
+
+		memcpy(skb_put(new_skb, pdu_len), skb->data, pdu_len);
+
+		nfc_llcp_rx_skb(local, new_skb);
+
+		kfree_skb(new_skb);
+next:
+		skb_pull(skb, pdu_len);
+	}
+}
+
+static void nfc_llcp_rx_skb(struct nfc_llcp_local *local, struct sk_buff *skb)
+{
+	u8 dsap, ssap, ptype;
+
 	ptype = nfc_llcp_ptype(skb);
 	dsap = nfc_llcp_dsap(skb);
 	ssap = nfc_llcp_ssap(skb);
@@ -1372,10 +1403,6 @@ static void nfc_llcp_rx_work(struct work_struct *work)
 		print_hex_dump(KERN_DEBUG, "LLCP Rx: ", DUMP_PREFIX_OFFSET,
 			       16, 1, skb->data, skb->len, true);
 
-	__net_timestamp(skb);
-
-	nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_RX);
-
 	switch (ptype) {
 	case LLCP_PDU_SYMM:
 		pr_debug("SYMM\n");
@@ -1418,7 +1445,30 @@ static void nfc_llcp_rx_work(struct work_struct *work)
 		nfc_llcp_recv_hdlc(local, skb);
 		break;
 
+	case LLCP_PDU_AGF:
+		pr_debug("AGF frame\n");
+		nfc_llcp_recv_agf(local, skb);
+		break;
 	}
+}
+
+static void nfc_llcp_rx_work(struct work_struct *work)
+{
+	struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local,
+						    rx_work);
+	struct sk_buff *skb;
+
+	skb = local->rx_pending;
+	if (skb == NULL) {
+		pr_debug("No pending SKB\n");
+		return;
+	}
+
+	__net_timestamp(skb);
+
+	nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_RX);
+
+	nfc_llcp_rx_skb(local, skb);
 
 	schedule_work(&local->tx_work);
 	kfree_skb(local->rx_pending);
@@ -1466,6 +1516,9 @@ void nfc_llcp_mac_is_down(struct nfc_dev *dev)
 	if (local == NULL)
 		return;
 
+	local->remote_miu = LLCP_DEFAULT_MIU;
+	local->remote_lto = LLCP_DEFAULT_LTO;
+
 	/* Close and purge all existing sockets */
 	nfc_llcp_socket_release(local, true, 0);
 }
@@ -1553,7 +1606,7 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev)
 		return;
 	}
 
-	local_cleanup(local, false);
+	local_cleanup(local);
 
 	nfc_llcp_local_put(local);
 }
diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h
index 7e87a66b02ec..ff8c434f7df8 100644
--- a/net/nfc/llcp/llcp.h
+++ b/net/nfc/llcp/llcp.h
@@ -31,6 +31,7 @@ enum llcp_state {
 #define LLCP_MAX_LTO  0xff
 #define LLCP_MAX_RW   15
 #define LLCP_MAX_MIUX 0x7ff
+#define LLCP_MAX_MIU (LLCP_MAX_MIUX + 128)
 
 #define LLCP_WKS_NUM_SAP   16
 #define LLCP_SDP_NUM_SAP   16
@@ -124,7 +125,7 @@ struct nfc_llcp_sock {
 	char *service_name;
 	size_t service_name_len;
 	u8 rw;
-	u16 miux;
+	__be16 miux;
 
 
 	/* Remote link parameters */
@@ -162,6 +163,7 @@ struct nfc_llcp_ui_cb {
 
 #define LLCP_HEADER_SIZE   2
 #define LLCP_SEQUENCE_SIZE 1
+#define LLCP_AGF_PDU_HEADER_SIZE 2
 
 /* LLCP versions: 1.1 is 1.0 plus SDP */
 #define LLCP_VERSION_10 0x10
@@ -210,6 +212,7 @@ struct nfc_llcp_ui_cb {
 
 void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s);
 void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s);
+void nfc_llcp_socket_remote_param_init(struct nfc_llcp_sock *sock);
 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local);
 int nfc_llcp_local_put(struct nfc_llcp_local *local);
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index c1101e6de170..d6faa47c9bba 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -279,7 +279,7 @@ static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
 			break;
 		}
 
-		llcp_sock->miux = (u16) opt;
+		llcp_sock->miux = cpu_to_be16((u16) opt);
 
 		break;
 
@@ -299,9 +299,12 @@ static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
 static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
 			       char __user *optval, int __user *optlen)
 {
+	struct nfc_llcp_local *local;
 	struct sock *sk = sock->sk;
 	struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
 	int len, err = 0;
+	u16 miux, remote_miu;
+	u8 rw;
 
 	pr_debug("%p optname %d\n", sk, optname);
 
@@ -311,19 +314,48 @@ static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
 	if (get_user(len, optlen))
 		return -EFAULT;
 
+	local = llcp_sock->local;
+	if (!local)
+		return -ENODEV;
+
 	len = min_t(u32, len, sizeof(u32));
 
 	lock_sock(sk);
 
 	switch (optname) {
 	case NFC_LLCP_RW:
-		if (put_user(llcp_sock->rw, (u32 __user *) optval))
+		rw = llcp_sock->rw > LLCP_MAX_RW ? local->rw : llcp_sock->rw;
+		if (put_user(rw, (u32 __user *) optval))
 			err = -EFAULT;
 
 		break;
 
 	case NFC_LLCP_MIUX:
-		if (put_user(llcp_sock->miux, (u32 __user *) optval))
+		miux = be16_to_cpu(llcp_sock->miux) > LLCP_MAX_MIUX ?
+			be16_to_cpu(local->miux) : be16_to_cpu(llcp_sock->miux);
+
+		if (put_user(miux, (u32 __user *) optval))
+			err = -EFAULT;
+
+		break;
+
+	case NFC_LLCP_REMOTE_MIU:
+		remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
+				local->remote_miu : llcp_sock->remote_miu;
+
+		if (put_user(remote_miu, (u32 __user *) optval))
+			err = -EFAULT;
+
+		break;
+
+	case NFC_LLCP_REMOTE_LTO:
+		if (put_user(local->remote_lto / 10, (u32 __user *) optval))
+			err = -EFAULT;
+
+		break;
+
+	case NFC_LLCP_REMOTE_RW:
+		if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
 			err = -EFAULT;
 
 		break;
@@ -925,13 +957,12 @@ struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
 	llcp_sock->ssap = 0;
 	llcp_sock->dsap = LLCP_SAP_SDP;
 	llcp_sock->rw = LLCP_MAX_RW + 1;
-	llcp_sock->miux = LLCP_MAX_MIUX + 1;
-	llcp_sock->remote_rw = LLCP_DEFAULT_RW;
-	llcp_sock->remote_miu = LLCP_DEFAULT_MIU;
+	llcp_sock->miux = cpu_to_be16(LLCP_MAX_MIUX + 1);
 	llcp_sock->send_n = llcp_sock->send_ack_n = 0;
 	llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
 	llcp_sock->remote_ready = 1;
 	llcp_sock->reserved_ssap = LLCP_SAP_MAX;
+	nfc_llcp_socket_remote_param_init(llcp_sock);
 	skb_queue_head_init(&llcp_sock->tx_queue);
 	skb_queue_head_init(&llcp_sock->tx_pending_queue);
 	INIT_LIST_HEAD(&llcp_sock->accept_queue);
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 9b9be5279f5d..1cec5e4f3a5e 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -587,7 +587,7 @@ static ssize_t rfkill_name_show(struct device *dev,
 
 static const char *rfkill_get_type_str(enum rfkill_type type)
 {
-	BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_FM + 1);
+	BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_NFC + 1);
 
 	switch (type) {
 	case RFKILL_TYPE_WLAN:
@@ -604,6 +604,8 @@ static const char *rfkill_get_type_str(enum rfkill_type type)
 		return "gps";
 	case RFKILL_TYPE_FM:
 		return "fm";
+	case RFKILL_TYPE_NFC:
+		return "nfc";
 	default:
 		BUG();
 	}
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 78fc0937948d..fb076cd6f808 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -131,6 +131,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
 		rfkill->pwr_clk = clk_get(&pdev->dev, pdata->power_clk_name);
 		if (IS_ERR(rfkill->pwr_clk)) {
 			pr_warn("%s: can't find pwr_clk.\n", __func__);
+			ret = PTR_ERR(rfkill->pwr_clk);
 			goto fail_shutdown_name;
 		}
 	}
@@ -152,9 +153,11 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
 	}
 
 	rfkill->rfkill_dev = rfkill_alloc(pdata->name, &pdev->dev, pdata->type,
-				&rfkill_gpio_ops, rfkill);
-	if (!rfkill->rfkill_dev)
+					  &rfkill_gpio_ops, rfkill);
+	if (!rfkill->rfkill_dev) {
+		ret = -ENOMEM;
 		goto fail_shutdown;
+	}
 
 	ret = rfkill_register(rfkill->rfkill_dev);
 	if (ret < 0)
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 124e5e773fbc..fd35dae547c4 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -88,6 +88,9 @@ struct cfg80211_registered_device {
 
 	struct delayed_work dfs_update_channels_wk;
 
+	/* netlink port which started critical protocol (0 means not started) */
+	u32 crit_proto_nlportid;
+
 	/* must be last because of the way we do wiphy_priv(),
 	 * and it should at least be aligned to NETDEV_ALIGN */
 	struct wiphy wiphy __aligned(NETDEV_ALIGN);
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 390198bf4b36..0c7b7dd855f6 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -648,6 +648,11 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
 
 	spin_unlock_bh(&wdev->mgmt_registrations_lock);
 
+	if (nlportid && rdev->crit_proto_nlportid == nlportid) {
+		rdev->crit_proto_nlportid = 0;
+		rdev_crit_proto_stop(rdev, wdev);
+	}
+
 	if (nlportid == wdev->ap_unexpected_nlportid)
 		wdev->ap_unexpected_nlportid = 0;
 }
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 671b69a3c136..afa283841e8c 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -447,62 +447,69 @@ nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 };
 
-/* ifidx get helper */
-static int nl80211_get_ifidx(struct netlink_callback *cb)
+static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
+				     struct netlink_callback *cb,
+				     struct cfg80211_registered_device **rdev,
+				     struct wireless_dev **wdev)
 {
-	int res;
-
-	res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
-			  nl80211_fam.attrbuf, nl80211_fam.maxattr,
-			  nl80211_policy);
-	if (res)
-		return res;
-
-	if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
-		return -EINVAL;
+	int err;
 
-	res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
-	if (!res)
-		return -EINVAL;
-	return res;
-}
+	rtnl_lock();
+	mutex_lock(&cfg80211_mutex);
 
-static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
-				       struct netlink_callback *cb,
-				       struct cfg80211_registered_device **rdev,
-				       struct net_device **dev)
-{
-	int ifidx = cb->args[0];
-	int err;
+	if (!cb->args[0]) {
+		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
+				  nl80211_policy);
+		if (err)
+			goto out_unlock;
 
-	if (!ifidx)
-		ifidx = nl80211_get_ifidx(cb);
-	if (ifidx < 0)
-		return ifidx;
+		*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
+						   nl80211_fam.attrbuf);
+		if (IS_ERR(*wdev)) {
+			err = PTR_ERR(*wdev);
+			goto out_unlock;
+		}
+		*rdev = wiphy_to_dev((*wdev)->wiphy);
+		cb->args[0] = (*rdev)->wiphy_idx;
+		cb->args[1] = (*wdev)->identifier;
+	} else {
+		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
+		struct wireless_dev *tmp;
 
-	cb->args[0] = ifidx;
+		if (!wiphy) {
+			err = -ENODEV;
+			goto out_unlock;
+		}
+		*rdev = wiphy_to_dev(wiphy);
+		*wdev = NULL;
 
-	rtnl_lock();
+		mutex_lock(&(*rdev)->devlist_mtx);
+		list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
+			if (tmp->identifier == cb->args[1]) {
+				*wdev = tmp;
+				break;
+			}
+		}
+		mutex_unlock(&(*rdev)->devlist_mtx);
 
-	*dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
-	if (!*dev) {
-		err = -ENODEV;
-		goto out_rtnl;
+		if (!*wdev) {
+			err = -ENODEV;
+			goto out_unlock;
+		}
 	}
 
-	*rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
-	if (IS_ERR(*rdev)) {
-		err = PTR_ERR(*rdev);
-		goto out_rtnl;
-	}
+	cfg80211_lock_rdev(*rdev);
 
+	mutex_unlock(&cfg80211_mutex);
 	return 0;
- out_rtnl:
+ out_unlock:
+	mutex_unlock(&cfg80211_mutex);
 	rtnl_unlock();
 	return err;
 }
 
-static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
+static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 {
 	cfg80211_unlock_rdev(rdev);
 	rtnl_unlock();
@@ -1417,6 +1424,10 @@ 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) {
+			CMD(crit_proto_start, CRIT_PROTOCOL_START);
+			CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
+		}
 
 #ifdef CONFIG_NL80211_TESTMODE
 		CMD(testmode_cmd, TESTMODE);
@@ -3525,15 +3536,20 @@ static int nl80211_dump_station(struct sk_buff *skb,
 {
 	struct station_info sinfo;
 	struct cfg80211_registered_device *dev;
-	struct net_device *netdev;
+	struct wireless_dev *wdev;
 	u8 mac_addr[ETH_ALEN];
-	int sta_idx = cb->args[1];
+	int sta_idx = cb->args[2];
 	int err;
 
-	err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+	err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
 	if (err)
 		return err;
 
+	if (!wdev->netdev) {
+		err = -EINVAL;
+		goto out_err;
+	}
+
 	if (!dev->ops->dump_station) {
 		err = -EOPNOTSUPP;
 		goto out_err;
@@ -3541,7 +3557,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
 
 	while (1) {
 		memset(&sinfo, 0, sizeof(sinfo));
-		err = rdev_dump_station(dev, netdev, sta_idx,
+		err = rdev_dump_station(dev, wdev->netdev, sta_idx,
 					mac_addr, &sinfo);
 		if (err == -ENOENT)
 			break;
@@ -3551,7 +3567,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
 		if (nl80211_send_station(skb,
 				NETLINK_CB(cb->skb).portid,
 				cb->nlh->nlmsg_seq, NLM_F_MULTI,
-				dev, netdev, mac_addr,
+				dev, wdev->netdev, mac_addr,
 				&sinfo) < 0)
 			goto out;
 
@@ -3560,10 +3576,10 @@ static int nl80211_dump_station(struct sk_buff *skb,
 
 
  out:
-	cb->args[1] = sta_idx;
+	cb->args[2] = sta_idx;
 	err = skb->len;
  out_err:
-	nl80211_finish_netdev_dump(dev);
+	nl80211_finish_wdev_dump(dev);
 
 	return err;
 }
@@ -4167,13 +4183,13 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 {
 	struct mpath_info pinfo;
 	struct cfg80211_registered_device *dev;
-	struct net_device *netdev;
+	struct wireless_dev *wdev;
 	u8 dst[ETH_ALEN];
 	u8 next_hop[ETH_ALEN];
-	int path_idx = cb->args[1];
+	int path_idx = cb->args[2];
 	int err;
 
-	err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+	err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
 	if (err)
 		return err;
 
@@ -4182,14 +4198,14 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 		goto out_err;
 	}
 
-	if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+	if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
 		err = -EOPNOTSUPP;
 		goto out_err;
 	}
 
 	while (1) {
-		err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
-				      &pinfo);
+		err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
+				      next_hop, &pinfo);
 		if (err == -ENOENT)
 			break;
 		if (err)
@@ -4197,7 +4213,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 
 		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
 				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
-				       netdev, dst, next_hop,
+				       wdev->netdev, dst, next_hop,
 				       &pinfo) < 0)
 			goto out;
 
@@ -4206,10 +4222,10 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 
 
  out:
-	cb->args[1] = path_idx;
+	cb->args[2] = path_idx;
 	err = skb->len;
  out_err:
-	nl80211_finish_netdev_dump(dev);
+	nl80211_finish_wdev_dump(dev);
 	return err;
 }
 
@@ -5565,9 +5581,13 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
 
 	genl_dump_check_consistent(cb, hdr, &nl80211_fam);
 
-	if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
+	if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
+		goto nla_put_failure;
+	if (wdev->netdev &&
 	    nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
 		goto nla_put_failure;
+	if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
+		goto nla_put_failure;
 
 	bss = nla_nest_start(msg, NL80211_ATTR_BSS);
 	if (!bss)
@@ -5647,22 +5667,18 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
 	return -EMSGSIZE;
 }
 
-static int nl80211_dump_scan(struct sk_buff *skb,
-			     struct netlink_callback *cb)
+static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
 {
 	struct cfg80211_registered_device *rdev;
-	struct net_device *dev;
 	struct cfg80211_internal_bss *scan;
 	struct wireless_dev *wdev;
-	int start = cb->args[1], idx = 0;
+	int start = cb->args[2], idx = 0;
 	int err;
 
-	err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
+	err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
 	if (err)
 		return err;
 
-	wdev = dev->ieee80211_ptr;
-
 	wdev_lock(wdev);
 	spin_lock_bh(&rdev->bss_lock);
 	cfg80211_bss_expire(rdev);
@@ -5683,8 +5699,8 @@ static int nl80211_dump_scan(struct sk_buff *skb,
 	spin_unlock_bh(&rdev->bss_lock);
 	wdev_unlock(wdev);
 
-	cb->args[1] = idx;
-	nl80211_finish_netdev_dump(rdev);
+	cb->args[2] = idx;
+	nl80211_finish_wdev_dump(rdev);
 
 	return skb->len;
 }
@@ -5753,14 +5769,19 @@ static int nl80211_dump_survey(struct sk_buff *skb,
 {
 	struct survey_info survey;
 	struct cfg80211_registered_device *dev;
-	struct net_device *netdev;
-	int survey_idx = cb->args[1];
+	struct wireless_dev *wdev;
+	int survey_idx = cb->args[2];
 	int res;
 
-	res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+	res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
 	if (res)
 		return res;
 
+	if (!wdev->netdev) {
+		res = -EINVAL;
+		goto out_err;
+	}
+
 	if (!dev->ops->dump_survey) {
 		res = -EOPNOTSUPP;
 		goto out_err;
@@ -5769,7 +5790,7 @@ static int nl80211_dump_survey(struct sk_buff *skb,
 	while (1) {
 		struct ieee80211_channel *chan;
 
-		res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
+		res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
 		if (res == -ENOENT)
 			break;
 		if (res)
@@ -5791,17 +5812,16 @@ static int nl80211_dump_survey(struct sk_buff *skb,
 		if (nl80211_send_survey(skb,
 				NETLINK_CB(cb->skb).portid,
 				cb->nlh->nlmsg_seq, NLM_F_MULTI,
-				netdev,
-				&survey) < 0)
+				wdev->netdev, &survey) < 0)
 			goto out;
 		survey_idx++;
 	}
 
  out:
-	cb->args[1] = survey_idx;
+	cb->args[2] = survey_idx;
 	res = skb->len;
  out_err:
-	nl80211_finish_netdev_dump(dev);
+	nl80211_finish_wdev_dump(dev);
 	return res;
 }
 
@@ -8143,9 +8163,11 @@ static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
 	if (!rdev->ops->stop_p2p_device)
 		return -EOPNOTSUPP;
 
+	mutex_lock(&rdev->devlist_mtx);
 	mutex_lock(&rdev->sched_scan_mtx);
 	cfg80211_stop_p2p_device(rdev, wdev);
 	mutex_unlock(&rdev->sched_scan_mtx);
+	mutex_unlock(&rdev->devlist_mtx);
 
 	return 0;
 }
@@ -8198,6 +8220,64 @@ static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
 	return rdev_update_ft_ies(rdev, dev, &ft_params);
 }
 
+static int nl80211_crit_protocol_start(struct sk_buff *skb,
+				       struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct wireless_dev *wdev = info->user_ptr[1];
+	enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
+	u16 duration;
+	int ret;
+
+	if (!rdev->ops->crit_proto_start)
+		return -EOPNOTSUPP;
+
+	if (WARN_ON(!rdev->ops->crit_proto_stop))
+		return -EINVAL;
+
+	if (rdev->crit_proto_nlportid)
+		return -EBUSY;
+
+	/* determine protocol if provided */
+	if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
+		proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
+
+	if (proto >= NUM_NL80211_CRIT_PROTO)
+		return -EINVAL;
+
+	/* timeout must be provided */
+	if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
+		return -EINVAL;
+
+	duration =
+		nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
+
+	if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
+		return -ERANGE;
+
+	ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
+	if (!ret)
+		rdev->crit_proto_nlportid = info->snd_portid;
+
+	return ret;
+}
+
+static int nl80211_crit_protocol_stop(struct sk_buff *skb,
+				      struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct wireless_dev *wdev = info->user_ptr[1];
+
+	if (!rdev->ops->crit_proto_stop)
+		return -EOPNOTSUPP;
+
+	if (rdev->crit_proto_nlportid) {
+		rdev->crit_proto_nlportid = 0;
+		rdev_crit_proto_stop(rdev, wdev);
+	}
+	return 0;
+}
+
 #define NL80211_FLAG_NEED_WIPHY		0x01
 #define NL80211_FLAG_NEED_NETDEV	0x02
 #define NL80211_FLAG_NEED_RTNL		0x04
@@ -8887,6 +8967,22 @@ static struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_CRIT_PROTOCOL_START,
+		.doit = nl80211_crit_protocol_start,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
+		.doit = nl80211_crit_protocol_stop,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	}
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
@@ -10632,6 +10728,45 @@ void cfg80211_ft_event(struct net_device *netdev,
 }
 EXPORT_SYMBOL(cfg80211_ft_event);
 
+void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
+{
+	struct cfg80211_registered_device *rdev;
+	struct sk_buff *msg;
+	void *hdr;
+	u32 nlportid;
+
+	rdev = wiphy_to_dev(wdev->wiphy);
+	if (!rdev->crit_proto_nlportid)
+		return;
+
+	nlportid = rdev->crit_proto_nlportid;
+	rdev->crit_proto_nlportid = 0;
+
+	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
+	if (!hdr)
+		goto nla_put_failure;
+
+	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
+	    nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+
+	genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
+	return;
+
+ nla_put_failure:
+	if (hdr)
+		genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+
+}
+EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
+
 /* initialisation/exit functions */
 
 int nl80211_init(void)
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index d77e1c1d3a0e..9f15f0ac824d 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -875,7 +875,7 @@ static inline void rdev_stop_p2p_device(struct cfg80211_registered_device *rdev,
 	trace_rdev_stop_p2p_device(&rdev->wiphy, wdev);
 	rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
 	trace_rdev_return_void(&rdev->wiphy);
-}					
+}
 
 static inline int rdev_set_mac_acl(struct cfg80211_registered_device *rdev,
 				   struct net_device *dev,
@@ -901,4 +901,26 @@ static inline int rdev_update_ft_ies(struct cfg80211_registered_device *rdev,
 	return ret;
 }
 
+static inline int rdev_crit_proto_start(struct cfg80211_registered_device *rdev,
+					struct wireless_dev *wdev,
+					enum nl80211_crit_proto_id protocol,
+					u16 duration)
+{
+	int ret;
+
+	trace_rdev_crit_proto_start(&rdev->wiphy, wdev, protocol, duration);
+	ret = rdev->ops->crit_proto_start(&rdev->wiphy, wdev,
+					  protocol, duration);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void rdev_crit_proto_stop(struct cfg80211_registered_device *rdev,
+				       struct wireless_dev *wdev)
+{
+	trace_rdev_crit_proto_stop(&rdev->wiphy, wdev);
+	rdev->ops->crit_proto_stop(&rdev->wiphy, wdev);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
 #endif /* __CFG80211_RDEV_OPS */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index e6df52dc8c69..cc35fbaa4578 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -855,7 +855,7 @@ static void handle_channel(struct wiphy *wiphy,
 			return;
 
 		REG_DBG_PRINT("Disabling freq %d MHz\n", chan->center_freq);
-		chan->flags = IEEE80211_CHAN_DISABLED;
+		chan->flags |= IEEE80211_CHAN_DISABLED;
 		return;
 	}
 
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 3c2033b8f596..ecd4fcec3c94 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1806,6 +1806,41 @@ TRACE_EVENT(rdev_update_ft_ies,
 		  WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->md)
 );
 
+TRACE_EVENT(rdev_crit_proto_start,
+	TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
+		 enum nl80211_crit_proto_id protocol, u16 duration),
+	TP_ARGS(wiphy, wdev, protocol, duration),
+	TP_STRUCT__entry(
+		WIPHY_ENTRY
+		WDEV_ENTRY
+		__field(u16, proto)
+		__field(u16, duration)
+	),
+	TP_fast_assign(
+		WIPHY_ASSIGN;
+		WDEV_ASSIGN;
+		__entry->proto = protocol;
+		__entry->duration = duration;
+	),
+	TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", proto=%x, duration=%u",
+		  WIPHY_PR_ARG, WDEV_PR_ARG, __entry->proto, __entry->duration)
+);
+
+TRACE_EVENT(rdev_crit_proto_stop,
+	TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
+	TP_ARGS(wiphy, wdev),
+	TP_STRUCT__entry(
+		WIPHY_ENTRY
+		WDEV_ENTRY
+	),
+	TP_fast_assign(
+		WIPHY_ASSIGN;
+		WDEV_ASSIGN;
+	),
+	TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT,
+		  WIPHY_PR_ARG, WDEV_PR_ARG)
+);
+
 /*************************************************************
  *	     cfg80211 exported functions traces		     *
  *************************************************************/
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 6cbac99ae03d..f5ad4d94ba88 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1155,6 +1155,26 @@ int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
 }
 EXPORT_SYMBOL(cfg80211_get_p2p_attr);
 
+bool ieee80211_operating_class_to_band(u8 operating_class,
+				       enum ieee80211_band *band)
+{
+	switch (operating_class) {
+	case 112:
+	case 115 ... 127:
+		*band = IEEE80211_BAND_5GHZ;
+		return true;
+	case 81:
+	case 82:
+	case 83:
+	case 84:
+		*band = IEEE80211_BAND_2GHZ;
+		return true;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL(ieee80211_operating_class_to_band);
+
 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
 				 u32 beacon_int)
 {
@@ -1258,12 +1278,12 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
 		if (wdev_iter == wdev)
 			continue;
-		if (wdev_iter->netdev) {
-			if (!netif_running(wdev_iter->netdev))
-				continue;
-		} else if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
+		if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
 			if (!wdev_iter->p2p_started)
 				continue;
+		} else if (wdev_iter->netdev) {
+			if (!netif_running(wdev_iter->netdev))
+				continue;
 		} else {
 			WARN_ON(1);
 		}