Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 7576 insertions, 0 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
new file mode 100644
index 000000000..56ecc5f97
--- /dev/null
+++ b/net/bluetooth/hci_event.c
@@ -0,0 +1,7576 @@
+/*
+   BlueZ - Bluetooth protocol stack for Linux
+   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
+
+   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.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
+   published by the Free Software Foundation;
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+   SOFTWARE IS DISCLAIMED.
+*/
+
+/* Bluetooth HCI event handling. */
+
+#include <asm/unaligned.h>
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/mgmt.h>
+
+#include "hci_request.h"
+#include "hci_debugfs.h"
+#include "hci_codec.h"
+#include "a2mp.h"
+#include "amp.h"
+#include "smp.h"
+#include "msft.h"
+#include "eir.h"
+
+#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
+		 "\x00\x00\x00\x00\x00\x00\x00\x00"
+
+#define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
+
+/* Handle HCI Event packets */
+
+static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
+			     u8 ev, size_t len)
+{
+	void *data;
+
+	data = skb_pull_data(skb, len);
+	if (!data)
+		bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
+
+	return data;
+}
+
+static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
+			     u16 op, size_t len)
+{
+	void *data;
+
+	data = skb_pull_data(skb, len);
+	if (!data)
+		bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
+
+	return data;
+}
+
+static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
+				u8 ev, size_t len)
+{
+	void *data;
+
+	data = skb_pull_data(skb, len);
+	if (!data)
+		bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
+
+	return data;
+}
+
+static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	/* It is possible that we receive Inquiry Complete event right
+	 * before we receive Inquiry Cancel Command Complete event, in
+	 * which case the latter event should have status of Command
+	 * Disallowed (0x0c). This should not be treated as error, since
+	 * we actually achieve what Inquiry Cancel wants to achieve,
+	 * which is to end the last Inquiry session.
+	 */
+	if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
+		bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
+		rp->status = 0x00;
+	}
+
+	if (rp->status)
+		return rp->status;
+
+	clear_bit(HCI_INQUIRY, &hdev->flags);
+	smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
+	wake_up_bit(&hdev->flags, HCI_INQUIRY);
+
+	hci_dev_lock(hdev);
+	/* Set discovery state to stopped if we're not doing LE active
+	 * scanning.
+	 */
+	if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
+	    hdev->le_scan_type != LE_SCAN_ACTIVE)
+		hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+	hci_dev_unlock(hdev);
+
+	hci_conn_check_pending(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
+			      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
+
+	return rp->status;
+}
+
+static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
+
+	hci_conn_check_pending(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	return rp->status;
+}
+
+static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_rp_role_discovery *rp = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->role = rp->role;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_rp_read_link_policy *rp = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->link_policy = __le16_to_cpu(rp->policy);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_write_link_policy *rp = data;
+	struct hci_conn *conn;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->link_policy = get_unaligned_le16(sent + 2);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_read_def_link_policy *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->link_policy = __le16_to_cpu(rp->policy);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
+	if (!sent)
+		return rp->status;
+
+	hdev->link_policy = get_unaligned_le16(sent);
+
+	return rp->status;
+}
+
+static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	clear_bit(HCI_RESET, &hdev->flags);
+
+	if (rp->status)
+		return rp->status;
+
+	/* Reset all non-persistent flags */
+	hci_dev_clear_volatile_flags(hdev);
+
+	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+	hdev->inq_tx_power = HCI_TX_POWER_INVALID;
+	hdev->adv_tx_power = HCI_TX_POWER_INVALID;
+
+	memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
+	hdev->adv_data_len = 0;
+
+	memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
+	hdev->scan_rsp_data_len = 0;
+
+	hdev->le_scan_type = LE_SCAN_PASSIVE;
+
+	hdev->ssp_debug_mode = 0;
+
+	hci_bdaddr_list_clear(&hdev->le_accept_list);
+	hci_bdaddr_list_clear(&hdev->le_resolv_list);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_read_stored_link_key *rp = data;
+	struct hci_cp_read_stored_link_key *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
+	if (!sent)
+		return rp->status;
+
+	if (!rp->status && sent->read_all == 0x01) {
+		hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
+		hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
+	}
+
+	return rp->status;
+}
+
+static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_delete_stored_link_key *rp = data;
+	u16 num_keys;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	num_keys = le16_to_cpu(rp->num_keys);
+
+	if (num_keys <= hdev->stored_num_keys)
+		hdev->stored_num_keys -= num_keys;
+	else
+		hdev->stored_num_keys = 0;
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_set_local_name_complete(hdev, sent, rp->status);
+	else if (!rp->status)
+		memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
+				 struct sk_buff *skb)
+{
+	struct hci_rp_read_local_name *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    hci_dev_test_flag(hdev, HCI_CONFIG))
+		memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (!rp->status) {
+		__u8 param = *((__u8 *) sent);
+
+		if (param == AUTH_ENABLED)
+			set_bit(HCI_AUTH, &hdev->flags);
+		else
+			clear_bit(HCI_AUTH, &hdev->flags);
+	}
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_auth_enable_complete(hdev, rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u8 param;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
+	if (!sent)
+		return rp->status;
+
+	param = *((__u8 *) sent);
+
+	if (param)
+		set_bit(HCI_ENCRYPT, &hdev->flags);
+	else
+		clear_bit(HCI_ENCRYPT, &hdev->flags);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u8 param;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
+	if (!sent)
+		return rp->status;
+
+	param = *((__u8 *) sent);
+
+	hci_dev_lock(hdev);
+
+	if (rp->status) {
+		hdev->discov_timeout = 0;
+		goto done;
+	}
+
+	if (param & SCAN_INQUIRY)
+		set_bit(HCI_ISCAN, &hdev->flags);
+	else
+		clear_bit(HCI_ISCAN, &hdev->flags);
+
+	if (param & SCAN_PAGE)
+		set_bit(HCI_PSCAN, &hdev->flags);
+	else
+		clear_bit(HCI_PSCAN, &hdev->flags);
+
+done:
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_set_event_filter *cp;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
+	if (!sent)
+		return rp->status;
+
+	cp = (struct hci_cp_set_event_filter *)sent;
+
+	if (cp->flt_type == HCI_FLT_CLEAR_ALL)
+		hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
+	else
+		hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_read_class_of_dev *rp = data;
+
+	if (WARN_ON(!hdev))
+		return HCI_ERROR_UNSPECIFIED;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	memcpy(hdev->dev_class, rp->dev_class, 3);
+
+	bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
+		   hdev->dev_class[1], hdev->dev_class[0]);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (!rp->status)
+		memcpy(hdev->dev_class, sent, 3);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_rp_read_voice_setting *rp = data;
+	__u16 setting;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	setting = __le16_to_cpu(rp->voice_setting);
+
+	if (hdev->voice_setting == setting)
+		return rp->status;
+
+	hdev->voice_setting = setting;
+
+	bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
+
+	if (hdev->notify)
+		hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u16 setting;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
+	if (!sent)
+		return rp->status;
+
+	setting = get_unaligned_le16(sent);
+
+	if (hdev->voice_setting == setting)
+		return rp->status;
+
+	hdev->voice_setting = setting;
+
+	bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
+
+	if (hdev->notify)
+		hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_read_num_supported_iac *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->num_iac = rp->num_iac;
+
+	bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_write_ssp_mode *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (!rp->status) {
+		if (sent->mode)
+			hdev->features[1][0] |= LMP_HOST_SSP;
+		else
+			hdev->features[1][0] &= ~LMP_HOST_SSP;
+	}
+
+	if (!rp->status) {
+		if (sent->mode)
+			hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
+		else
+			hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_write_sc_support *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (!rp->status) {
+		if (sent->support)
+			hdev->features[1][0] |= LMP_HOST_SC;
+		else
+			hdev->features[1][0] &= ~LMP_HOST_SC;
+	}
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
+		if (sent->support)
+			hci_dev_set_flag(hdev, HCI_SC_ENABLED);
+		else
+			hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_rp_read_local_version *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    hci_dev_test_flag(hdev, HCI_CONFIG)) {
+		hdev->hci_ver = rp->hci_ver;
+		hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
+		hdev->lmp_ver = rp->lmp_ver;
+		hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
+		hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
+	}
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_read_enc_key_size *rp = data;
+	struct hci_conn *conn;
+	u16 handle;
+	u8 status = rp->status;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	handle = le16_to_cpu(rp->handle);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, handle);
+	if (!conn) {
+		status = 0xFF;
+		goto done;
+	}
+
+	/* While unexpected, the read_enc_key_size command may fail. The most
+	 * secure approach is to then assume the key size is 0 to force a
+	 * disconnection.
+	 */
+	if (status) {
+		bt_dev_err(hdev, "failed to read key size for handle %u",
+			   handle);
+		conn->enc_key_size = 0;
+	} else {
+		conn->enc_key_size = rp->key_size;
+		status = 0;
+
+		if (conn->enc_key_size < hdev->min_enc_key_size) {
+			/* As slave role, the conn->state has been set to
+			 * BT_CONNECTED and l2cap conn req might not be received
+			 * yet, at this moment the l2cap layer almost does
+			 * nothing with the non-zero status.
+			 * So we also clear encrypt related bits, and then the
+			 * handler of l2cap conn req will get the right secure
+			 * state at a later time.
+			 */
+			status = HCI_ERROR_AUTH_FAILURE;
+			clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
+			clear_bit(HCI_CONN_AES_CCM, &conn->flags);
+		}
+	}
+
+	hci_encrypt_cfm(conn, status);
+
+done:
+	hci_dev_unlock(hdev);
+
+	return status;
+}
+
+static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_read_local_commands *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    hci_dev_test_flag(hdev, HCI_CONFIG))
+		memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
+					   struct sk_buff *skb)
+{
+	struct hci_rp_read_auth_payload_to *rp = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_rp_write_auth_payload_to *rp = data;
+	struct hci_conn *conn;
+	void *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_read_local_features *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	memcpy(hdev->features, rp->features, 8);
+
+	/* Adjust default settings according to features
+	 * supported by device. */
+
+	if (hdev->features[0][0] & LMP_3SLOT)
+		hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
+
+	if (hdev->features[0][0] & LMP_5SLOT)
+		hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
+
+	if (hdev->features[0][1] & LMP_HV2) {
+		hdev->pkt_type  |= (HCI_HV2);
+		hdev->esco_type |= (ESCO_HV2);
+	}
+
+	if (hdev->features[0][1] & LMP_HV3) {
+		hdev->pkt_type  |= (HCI_HV3);
+		hdev->esco_type |= (ESCO_HV3);
+	}
+
+	if (lmp_esco_capable(hdev))
+		hdev->esco_type |= (ESCO_EV3);
+
+	if (hdev->features[0][4] & LMP_EV4)
+		hdev->esco_type |= (ESCO_EV4);
+
+	if (hdev->features[0][4] & LMP_EV5)
+		hdev->esco_type |= (ESCO_EV5);
+
+	if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
+		hdev->esco_type |= (ESCO_2EV3);
+
+	if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
+		hdev->esco_type |= (ESCO_3EV3);
+
+	if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
+		hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_rp_read_local_ext_features *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (hdev->max_page < rp->max_page) {
+		if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
+			     &hdev->quirks))
+			bt_dev_warn(hdev, "broken local ext features page 2");
+		else
+			hdev->max_page = rp->max_page;
+	}
+
+	if (rp->page < HCI_MAX_PAGES)
+		memcpy(hdev->features[rp->page], rp->features, 8);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_read_flow_control_mode *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->flow_ctl_mode = rp->mode;
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_rp_read_buffer_size *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
+	hdev->sco_mtu  = rp->sco_mtu;
+	hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
+	hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
+
+	if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
+		hdev->sco_mtu  = 64;
+		hdev->sco_pkts = 8;
+	}
+
+	hdev->acl_cnt = hdev->acl_pkts;
+	hdev->sco_cnt = hdev->sco_pkts;
+
+	BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
+	       hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
+			      struct sk_buff *skb)
+{
+	struct hci_rp_read_bd_addr *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (test_bit(HCI_INIT, &hdev->flags))
+		bacpy(&hdev->bdaddr, &rp->bdaddr);
+
+	if (hci_dev_test_flag(hdev, HCI_SETUP))
+		bacpy(&hdev->setup_addr, &rp->bdaddr);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_rp_read_local_pairing_opts *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
+	    hci_dev_test_flag(hdev, HCI_CONFIG)) {
+		hdev->pairing_opts = rp->pairing_opts;
+		hdev->max_enc_key_size = rp->max_key_size;
+	}
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_rp_read_page_scan_activity *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (test_bit(HCI_INIT, &hdev->flags)) {
+		hdev->page_scan_interval = __le16_to_cpu(rp->interval);
+		hdev->page_scan_window = __le16_to_cpu(rp->window);
+	}
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
+					  struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_write_page_scan_activity *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
+	if (!sent)
+		return rp->status;
+
+	hdev->page_scan_interval = __le16_to_cpu(sent->interval);
+	hdev->page_scan_window = __le16_to_cpu(sent->window);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_read_page_scan_type *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (test_bit(HCI_INIT, &hdev->flags))
+		hdev->page_scan_type = rp->type;
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	u8 *type;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
+	if (type)
+		hdev->page_scan_type = *type;
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_read_data_block_size *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
+	hdev->block_len = __le16_to_cpu(rp->block_len);
+	hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
+
+	hdev->block_cnt = hdev->num_blocks;
+
+	BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
+	       hdev->block_cnt, hdev->block_len);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
+			    struct sk_buff *skb)
+{
+	struct hci_rp_read_clock *rp = data;
+	struct hci_cp_read_clock *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
+	if (!cp)
+		goto unlock;
+
+	if (cp->which == 0x00) {
+		hdev->clock = le32_to_cpu(rp->clock);
+		goto unlock;
+	}
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn) {
+		conn->clock = le32_to_cpu(rp->clock);
+		conn->clock_accuracy = le16_to_cpu(rp->accuracy);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_read_local_amp_info *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->amp_status = rp->amp_status;
+	hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
+	hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
+	hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
+	hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
+	hdev->amp_type = rp->amp_type;
+	hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
+	hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
+	hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
+	hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_rp_read_inq_rsp_tx_power *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->inq_tx_power = rp->tx_power;
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
+					     struct sk_buff *skb)
+{
+	struct hci_rp_read_def_err_data_reporting *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->err_data_reporting = rp->err_data_reporting;
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
+					      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_write_def_err_data_reporting *cp;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
+	if (!cp)
+		return rp->status;
+
+	hdev->err_data_reporting = cp->err_data_reporting;
+
+	return rp->status;
+}
+
+static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_rp_pin_code_reply *rp = data;
+	struct hci_cp_pin_code_reply *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
+
+	if (rp->status)
+		goto unlock;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
+	if (!cp)
+		goto unlock;
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+	if (conn)
+		conn->pin_length = cp->pin_len;
+
+unlock:
+	hci_dev_unlock(hdev);
+	return rp->status;
+}
+
+static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_rp_pin_code_neg_reply *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
+						 rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_le_read_buffer_size *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
+	hdev->le_pkts = rp->le_max_pkt;
+
+	hdev->le_cnt = hdev->le_pkts;
+
+	BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_le_read_local_features *rp = data;
+
+	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	memcpy(hdev->le_features, rp->features, 8);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_le_read_adv_tx_power *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->adv_tx_power = rp->tx_power;
+
+	return rp->status;
+}
+
+static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_rp_user_confirm_reply *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
+						 rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_user_confirm_reply *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
+						     ACL_LINK, 0, rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_rp_user_confirm_reply *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
+						 0, rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_user_confirm_reply *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
+						     ACL_LINK, 0, rp->status);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_rp_read_local_oob_data *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_rp_read_local_oob_ext_data *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	bdaddr_t *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	bacpy(&hdev->random_addr, sent);
+
+	if (!bacmp(&hdev->rpa, sent)) {
+		hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
+		queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
+				   secs_to_jiffies(hdev->rpa_timeout));
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_le_set_default_phy *cp;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	hdev->le_tx_def_phys = cp->tx_phys;
+	hdev->le_rx_def_phys = cp->rx_phys;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_le_set_adv_set_rand_addr *cp;
+	struct adv_info *adv;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
+	/* Update only in case the adv instance since handle 0x00 shall be using
+	 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
+	 * non-extended adverting.
+	 */
+	if (!cp || !cp->handle)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	adv = hci_find_adv_instance(hdev, cp->handle);
+	if (adv) {
+		bacpy(&adv->random_addr, &cp->bdaddr);
+		if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
+			adv->rpa_expired = false;
+			queue_delayed_work(hdev->workqueue,
+					   &adv->rpa_expired_cb,
+					   secs_to_jiffies(hdev->rpa_timeout));
+		}
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	u8 *instance;
+	int err;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
+	if (!instance)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	err = hci_remove_adv_instance(hdev, *instance);
+	if (!err)
+		mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
+					 *instance);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct adv_info *adv, *n;
+	int err;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
+		u8 instance = adv->instance;
+
+		err = hci_remove_adv_instance(hdev, instance);
+		if (!err)
+			mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
+						 hdev, instance);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_le_read_transmit_power *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->min_le_tx_power = rp->min_le_tx_power;
+	hdev->max_le_tx_power = rp->max_le_tx_power;
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_le_set_privacy_mode *cp;
+	struct hci_conn_params *params;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
+	if (params)
+		WRITE_ONCE(params->privacy_mode, cp->mode);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u8 *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	/* If we're doing connection initiation as peripheral. Set a
+	 * timeout in case something goes wrong.
+	 */
+	if (*sent) {
+		struct hci_conn *conn;
+
+		hci_dev_set_flag(hdev, HCI_LE_ADV);
+
+		conn = hci_lookup_le_connect(hdev);
+		if (conn)
+			queue_delayed_work(hdev->workqueue,
+					   &conn->le_conn_timeout,
+					   conn->conn_timeout);
+	} else {
+		hci_dev_clear_flag(hdev, HCI_LE_ADV);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_cp_le_set_ext_adv_enable *cp;
+	struct hci_cp_ext_adv_set *set;
+	struct adv_info *adv = NULL, *n;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
+	if (!cp)
+		return rp->status;
+
+	set = (void *)cp->data;
+
+	hci_dev_lock(hdev);
+
+	if (cp->num_of_sets)
+		adv = hci_find_adv_instance(hdev, set->handle);
+
+	if (cp->enable) {
+		struct hci_conn *conn;
+
+		hci_dev_set_flag(hdev, HCI_LE_ADV);
+
+		if (adv)
+			adv->enabled = true;
+
+		conn = hci_lookup_le_connect(hdev);
+		if (conn)
+			queue_delayed_work(hdev->workqueue,
+					   &conn->le_conn_timeout,
+					   conn->conn_timeout);
+	} else {
+		if (cp->num_of_sets) {
+			if (adv)
+				adv->enabled = false;
+
+			/* If just one instance was disabled check if there are
+			 * any other instance enabled before clearing HCI_LE_ADV
+			 */
+			list_for_each_entry_safe(adv, n, &hdev->adv_instances,
+						 list) {
+				if (adv->enabled)
+					goto unlock;
+			}
+		} else {
+			/* All instances shall be considered disabled */
+			list_for_each_entry_safe(adv, n, &hdev->adv_instances,
+						 list)
+				adv->enabled = false;
+		}
+
+		hci_dev_clear_flag(hdev, HCI_LE_ADV);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_cp_le_set_scan_param *cp;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	hdev->le_scan_type = cp->type;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_cp_le_set_ext_scan_params *cp;
+	struct hci_ev_status *rp = data;
+	struct hci_cp_le_scan_phy_params *phy_param;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
+	if (!cp)
+		return rp->status;
+
+	phy_param = (void *)cp->data;
+
+	hci_dev_lock(hdev);
+
+	hdev->le_scan_type = phy_param->type;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static bool has_pending_adv_report(struct hci_dev *hdev)
+{
+	struct discovery_state *d = &hdev->discovery;
+
+	return bacmp(&d->last_adv_addr, BDADDR_ANY);
+}
+
+static void clear_pending_adv_report(struct hci_dev *hdev)
+{
+	struct discovery_state *d = &hdev->discovery;
+
+	bacpy(&d->last_adv_addr, BDADDR_ANY);
+	d->last_adv_data_len = 0;
+}
+
+static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
+				     u8 bdaddr_type, s8 rssi, u32 flags,
+				     u8 *data, u8 len)
+{
+	struct discovery_state *d = &hdev->discovery;
+
+	if (len > HCI_MAX_AD_LENGTH)
+		return;
+
+	bacpy(&d->last_adv_addr, bdaddr);
+	d->last_adv_addr_type = bdaddr_type;
+	d->last_adv_rssi = rssi;
+	d->last_adv_flags = flags;
+	memcpy(d->last_adv_data, data, len);
+	d->last_adv_data_len = len;
+}
+
+static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
+{
+	hci_dev_lock(hdev);
+
+	switch (enable) {
+	case LE_SCAN_ENABLE:
+		hci_dev_set_flag(hdev, HCI_LE_SCAN);
+		if (hdev->le_scan_type == LE_SCAN_ACTIVE)
+			clear_pending_adv_report(hdev);
+		if (hci_dev_test_flag(hdev, HCI_MESH))
+			hci_discovery_set_state(hdev, DISCOVERY_FINDING);
+		break;
+
+	case LE_SCAN_DISABLE:
+		/* We do this here instead of when setting DISCOVERY_STOPPED
+		 * since the latter would potentially require waiting for
+		 * inquiry to stop too.
+		 */
+		if (has_pending_adv_report(hdev)) {
+			struct discovery_state *d = &hdev->discovery;
+
+			mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
+					  d->last_adv_addr_type, NULL,
+					  d->last_adv_rssi, d->last_adv_flags,
+					  d->last_adv_data,
+					  d->last_adv_data_len, NULL, 0, 0);
+		}
+
+		/* Cancel this timer so that we don't try to disable scanning
+		 * when it's already disabled.
+		 */
+		cancel_delayed_work(&hdev->le_scan_disable);
+
+		hci_dev_clear_flag(hdev, HCI_LE_SCAN);
+
+		/* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
+		 * interrupted scanning due to a connect request. Mark
+		 * therefore discovery as stopped.
+		 */
+		if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
+			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+		else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
+			 hdev->discovery.state == DISCOVERY_FINDING)
+			queue_work(hdev->workqueue, &hdev->reenable_adv_work);
+
+		break;
+
+	default:
+		bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
+			   enable);
+		break;
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_cp_le_set_scan_enable *cp;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
+	if (!cp)
+		return rp->status;
+
+	le_set_scan_enable_complete(hdev, cp->enable);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_cp_le_set_ext_scan_enable *cp;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
+	if (!cp)
+		return rp->status;
+
+	le_set_scan_enable_complete(hdev, cp->enable);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_le_read_num_supported_adv_sets *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
+		   rp->num_of_sets);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_num_of_adv_sets = rp->num_of_sets;
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
+					  struct sk_buff *skb)
+{
+	struct hci_rp_le_read_accept_list_size *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_accept_list_size = rp->size;
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_clear(&hdev->le_accept_list);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_cp_le_add_to_accept_list *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
+			    sent->bdaddr_type);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_cp_le_del_from_accept_list *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
+			    sent->bdaddr_type);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
+					  struct sk_buff *skb)
+{
+	struct hci_rp_le_read_supported_states *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	memcpy(hdev->le_states, rp->le_states, 8);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_le_read_def_data_len *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
+	hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_cp_le_write_def_data_len *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
+	if (!sent)
+		return rp->status;
+
+	hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
+	hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_cp_le_add_to_resolv_list *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
+				sent->bdaddr_type, sent->peer_irk,
+				sent->local_irk);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_cp_le_del_from_resolv_list *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
+			    sent->bdaddr_type);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hci_bdaddr_list_clear(&hdev->le_resolv_list);
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
+					  struct sk_buff *skb)
+{
+	struct hci_rp_le_read_resolv_list_size *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_resolv_list_size = rp->size;
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
+					       struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u8 *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (*sent)
+		hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
+	else
+		hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_rp_le_read_max_data_len *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
+	hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
+	hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
+	hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
+
+	return rp->status;
+}
+
+static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_cp_write_le_host_supported *sent;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (sent->le) {
+		hdev->features[1][0] |= LMP_HOST_LE;
+		hci_dev_set_flag(hdev, HCI_LE_ENABLED);
+	} else {
+		hdev->features[1][0] &= ~LMP_HOST_LE;
+		hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
+		hci_dev_clear_flag(hdev, HCI_ADVERTISING);
+	}
+
+	if (sent->simul)
+		hdev->features[1][0] |= LMP_HOST_LE_BREDR;
+	else
+		hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
+			       struct sk_buff *skb)
+{
+	struct hci_cp_le_set_adv_param *cp;
+	struct hci_ev_status *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hdev->adv_addr_type = cp->own_address_type;
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_le_set_ext_adv_params *rp = data;
+	struct hci_cp_le_set_ext_adv_params *cp;
+	struct adv_info *adv_instance;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+	hdev->adv_addr_type = cp->own_addr_type;
+	if (!cp->handle) {
+		/* Store in hdev for instance 0 */
+		hdev->adv_tx_power = rp->tx_power;
+	} else {
+		adv_instance = hci_find_adv_instance(hdev, cp->handle);
+		if (adv_instance)
+			adv_instance->tx_power = rp->tx_power;
+	}
+	/* Update adv data as tx power is known now */
+	hci_update_adv_data(hdev, cp->handle);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
+			   struct sk_buff *skb)
+{
+	struct hci_rp_read_rssi *rp = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (conn)
+		conn->rssi = rp->rssi;
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
+			       struct sk_buff *skb)
+{
+	struct hci_cp_read_tx_power *sent;
+	struct hci_rp_read_tx_power *rp = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
+	if (!conn)
+		goto unlock;
+
+	switch (sent->type) {
+	case 0x00:
+		conn->tx_power = rp->tx_power;
+		break;
+	case 0x01:
+		conn->max_tx_power = rp->tx_power;
+		break;
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+	return rp->status;
+}
+
+static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	u8 *mode;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
+	if (mode)
+		hdev->ssp_debug_mode = *mode;
+
+	return rp->status;
+}
+
+static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
+{
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (status) {
+		hci_conn_check_pending(hdev);
+		return;
+	}
+
+	if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
+		set_bit(HCI_INQUIRY, &hdev->flags);
+}
+
+static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_create_conn *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+
+	bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
+
+	if (status) {
+		if (conn && conn->state == BT_CONNECT) {
+			if (status != 0x0c || conn->attempt > 2) {
+				conn->state = BT_CLOSED;
+				hci_connect_cfm(conn, status);
+				hci_conn_del(conn);
+			} else
+				conn->state = BT_CONNECT2;
+		}
+	} else {
+		if (!conn) {
+			conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
+					    HCI_ROLE_MASTER);
+			if (!conn)
+				bt_dev_err(hdev, "no memory for new connection");
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_add_sco *cp;
+	struct hci_conn *acl, *sco;
+	__u16 handle;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
+	if (!cp)
+		return;
+
+	handle = __le16_to_cpu(cp->handle);
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
+
+	hci_dev_lock(hdev);
+
+	acl = hci_conn_hash_lookup_handle(hdev, handle);
+	if (acl) {
+		sco = acl->link;
+		if (sco) {
+			sco->state = BT_CLOSED;
+
+			hci_connect_cfm(sco, status);
+			hci_conn_del(sco);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_auth_requested *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		if (conn->state == BT_CONFIG) {
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_set_conn_encrypt *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		if (conn->state == BT_CONFIG) {
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static int hci_outgoing_auth_needed(struct hci_dev *hdev,
+				    struct hci_conn *conn)
+{
+	if (conn->state != BT_CONFIG || !conn->out)
+		return 0;
+
+	if (conn->pending_sec_level == BT_SECURITY_SDP)
+		return 0;
+
+	/* Only request authentication for SSP connections or non-SSP
+	 * devices with sec_level MEDIUM or HIGH or if MITM protection
+	 * is requested.
+	 */
+	if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
+	    conn->pending_sec_level != BT_SECURITY_FIPS &&
+	    conn->pending_sec_level != BT_SECURITY_HIGH &&
+	    conn->pending_sec_level != BT_SECURITY_MEDIUM)
+		return 0;
+
+	return 1;
+}
+
+static int hci_resolve_name(struct hci_dev *hdev,
+				   struct inquiry_entry *e)
+{
+	struct hci_cp_remote_name_req cp;
+
+	memset(&cp, 0, sizeof(cp));
+
+	bacpy(&cp.bdaddr, &e->data.bdaddr);
+	cp.pscan_rep_mode = e->data.pscan_rep_mode;
+	cp.pscan_mode = e->data.pscan_mode;
+	cp.clock_offset = e->data.clock_offset;
+
+	return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
+}
+
+static bool hci_resolve_next_name(struct hci_dev *hdev)
+{
+	struct discovery_state *discov = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	if (list_empty(&discov->resolve))
+		return false;
+
+	/* We should stop if we already spent too much time resolving names. */
+	if (time_after(jiffies, discov->name_resolve_timeout)) {
+		bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
+		return false;
+	}
+
+	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
+	if (!e)
+		return false;
+
+	if (hci_resolve_name(hdev, e) == 0) {
+		e->name_state = NAME_PENDING;
+		return true;
+	}
+
+	return false;
+}
+
+static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
+				   bdaddr_t *bdaddr, u8 *name, u8 name_len)
+{
+	struct discovery_state *discov = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	/* Update the mgmt connected state if necessary. Be careful with
+	 * conn objects that exist but are not (yet) connected however.
+	 * Only those in BT_CONFIG or BT_CONNECTED states can be
+	 * considered connected.
+	 */
+	if (conn &&
+	    (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
+	    !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
+		mgmt_device_connected(hdev, conn, name, name_len);
+
+	if (discov->state == DISCOVERY_STOPPED)
+		return;
+
+	if (discov->state == DISCOVERY_STOPPING)
+		goto discov_complete;
+
+	if (discov->state != DISCOVERY_RESOLVING)
+		return;
+
+	e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
+	/* If the device was not found in a list of found devices names of which
+	 * are pending. there is no need to continue resolving a next name as it
+	 * will be done upon receiving another Remote Name Request Complete
+	 * Event */
+	if (!e)
+		return;
+
+	list_del(&e->list);
+
+	e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
+	mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
+			 name, name_len);
+
+	if (hci_resolve_next_name(hdev))
+		return;
+
+discov_complete:
+	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+}
+
+static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_remote_name_req *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	/* If successful wait for the name req complete event before
+	 * checking for the need to do authentication */
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
+
+	if (!conn)
+		goto unlock;
+
+	if (!hci_outgoing_auth_needed(hdev, conn))
+		goto unlock;
+
+	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
+		struct hci_cp_auth_requested auth_cp;
+
+		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
+
+		auth_cp.handle = __cpu_to_le16(conn->handle);
+		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
+			     sizeof(auth_cp), &auth_cp);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_read_remote_features *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		if (conn->state == BT_CONFIG) {
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_read_remote_ext_features *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		if (conn->state == BT_CONFIG) {
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_setup_sync_conn *cp;
+	struct hci_conn *acl, *sco;
+	__u16 handle;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
+	if (!cp)
+		return;
+
+	handle = __le16_to_cpu(cp->handle);
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
+
+	hci_dev_lock(hdev);
+
+	acl = hci_conn_hash_lookup_handle(hdev, handle);
+	if (acl) {
+		sco = acl->link;
+		if (sco) {
+			sco->state = BT_CLOSED;
+
+			hci_connect_cfm(sco, status);
+			hci_conn_del(sco);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_enhanced_setup_sync_conn *cp;
+	struct hci_conn *acl, *sco;
+	__u16 handle;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
+	if (!cp)
+		return;
+
+	handle = __le16_to_cpu(cp->handle);
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
+
+	hci_dev_lock(hdev);
+
+	acl = hci_conn_hash_lookup_handle(hdev, handle);
+	if (acl) {
+		sco = acl->link;
+		if (sco) {
+			sco->state = BT_CLOSED;
+
+			hci_connect_cfm(sco, status);
+			hci_conn_del(sco);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_sniff_mode *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
+
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
+			hci_sco_setup(conn, status);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
+{
+	struct hci_cp_exit_sniff_mode *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
+
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
+			hci_sco_setup(conn, status);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_disconnect *cp;
+	struct hci_conn_params *params;
+	struct hci_conn *conn;
+	bool mgmt_conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	/* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
+	 * otherwise cleanup the connection immediately.
+	 */
+	if (!status && !hdev->suspended)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (!conn)
+		goto unlock;
+
+	if (status) {
+		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
+				       conn->dst_type, status);
+
+		if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
+			hdev->cur_adv_instance = conn->adv_instance;
+			hci_enable_advertising(hdev);
+		}
+
+		/* Inform sockets conn is gone before we delete it */
+		hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
+
+		goto done;
+	}
+
+	mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
+
+	if (conn->type == ACL_LINK) {
+		if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
+			hci_remove_link_key(hdev, &conn->dst);
+	}
+
+	params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+	if (params) {
+		switch (params->auto_connect) {
+		case HCI_AUTO_CONN_LINK_LOSS:
+			if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
+				break;
+			fallthrough;
+
+		case HCI_AUTO_CONN_DIRECT:
+		case HCI_AUTO_CONN_ALWAYS:
+			hci_pend_le_list_del_init(params);
+			hci_pend_le_list_add(params, &hdev->pend_le_conns);
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
+				 cp->reason, mgmt_conn);
+
+	hci_disconn_cfm(conn, cp->reason);
+
+done:
+	/* If the disconnection failed for any reason, the upper layer
+	 * does not retry to disconnect in current implementation.
+	 * Hence, we need to do some basic cleanup here and re-enable
+	 * advertising if necessary.
+	 */
+	hci_conn_del(conn);
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
+{
+	/* When using controller based address resolution, then the new
+	 * address types 0x02 and 0x03 are used. These types need to be
+	 * converted back into either public address or random address type
+	 */
+	switch (type) {
+	case ADDR_LE_DEV_PUBLIC_RESOLVED:
+		if (resolved)
+			*resolved = true;
+		return ADDR_LE_DEV_PUBLIC;
+	case ADDR_LE_DEV_RANDOM_RESOLVED:
+		if (resolved)
+			*resolved = true;
+		return ADDR_LE_DEV_RANDOM;
+	}
+
+	if (resolved)
+		*resolved = false;
+	return type;
+}
+
+static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
+			      u8 peer_addr_type, u8 own_address_type,
+			      u8 filter_policy)
+{
+	struct hci_conn *conn;
+
+	conn = hci_conn_hash_lookup_le(hdev, peer_addr,
+				       peer_addr_type);
+	if (!conn)
+		return;
+
+	own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
+
+	/* Store the initiator and responder address information which
+	 * is needed for SMP. These values will not change during the
+	 * lifetime of the connection.
+	 */
+	conn->init_addr_type = own_address_type;
+	if (own_address_type == ADDR_LE_DEV_RANDOM)
+		bacpy(&conn->init_addr, &hdev->random_addr);
+	else
+		bacpy(&conn->init_addr, &hdev->bdaddr);
+
+	conn->resp_addr_type = peer_addr_type;
+	bacpy(&conn->resp_addr, peer_addr);
+}
+
+static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_le_create_conn *cp;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	/* All connection failure handling is taken care of by the
+	 * hci_conn_failed function which is triggered by the HCI
+	 * request completion callbacks used for connecting.
+	 */
+	if (status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
+			  cp->own_address_type, cp->filter_policy);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_le_ext_create_conn *cp;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	/* All connection failure handling is taken care of by the
+	 * hci_conn_failed function which is triggered by the HCI
+	 * request completion callbacks used for connecting.
+	 */
+	if (status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
+			  cp->own_addr_type, cp->filter_policy);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_le_read_remote_features *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (conn) {
+		if (conn->state == BT_CONFIG) {
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_le_start_enc *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
+	if (!cp)
+		goto unlock;
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (!conn)
+		goto unlock;
+
+	if (conn->state != BT_CONNECTED)
+		goto unlock;
+
+	hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
+	hci_conn_drop(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_switch_role *cp;
+	struct hci_conn *conn;
+
+	BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+	if (conn)
+		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_status *ev = data;
+	struct discovery_state *discov = &hdev->discovery;
+	struct inquiry_entry *e;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_conn_check_pending(hdev);
+
+	if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
+		return;
+
+	smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
+	wake_up_bit(&hdev->flags, HCI_INQUIRY);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		return;
+
+	hci_dev_lock(hdev);
+
+	if (discov->state != DISCOVERY_FINDING)
+		goto unlock;
+
+	if (list_empty(&discov->resolve)) {
+		/* When BR/EDR inquiry is active and no LE scanning is in
+		 * progress, then change discovery state to indicate completion.
+		 *
+		 * When running LE scanning and BR/EDR inquiry simultaneously
+		 * and the LE scan already finished, then change the discovery
+		 * state to indicate completion.
+		 */
+		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
+		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
+			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+		goto unlock;
+	}
+
+	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
+	if (e && hci_resolve_name(hdev, e) == 0) {
+		e->name_state = NAME_PENDING;
+		hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
+		discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
+	} else {
+		/* When BR/EDR inquiry is active and no LE scanning is in
+		 * progress, then change discovery state to indicate completion.
+		 *
+		 * When running LE scanning and BR/EDR inquiry simultaneously
+		 * and the LE scan already finished, then change the discovery
+		 * state to indicate completion.
+		 */
+		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
+		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
+			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_inquiry_result *ev = edata;
+	struct inquiry_data data;
+	int i;
+
+	if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
+			     flex_array_size(ev, info, ev->num)))
+		return;
+
+	bt_dev_dbg(hdev, "num %d", ev->num);
+
+	if (!ev->num)
+		return;
+
+	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
+		return;
+
+	hci_dev_lock(hdev);
+
+	for (i = 0; i < ev->num; i++) {
+		struct inquiry_info *info = &ev->info[i];
+		u32 flags;
+
+		bacpy(&data.bdaddr, &info->bdaddr);
+		data.pscan_rep_mode	= info->pscan_rep_mode;
+		data.pscan_period_mode	= info->pscan_period_mode;
+		data.pscan_mode		= info->pscan_mode;
+		memcpy(data.dev_class, info->dev_class, 3);
+		data.clock_offset	= info->clock_offset;
+		data.rssi		= HCI_RSSI_INVALID;
+		data.ssp_mode		= 0x00;
+
+		flags = hci_inquiry_cache_update(hdev, &data, false);
+
+		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
+				  info->dev_class, HCI_RSSI_INVALID,
+				  flags, NULL, 0, NULL, 0, 0);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_conn_complete *ev = data;
+	struct hci_conn *conn;
+	u8 status = ev->status;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
+	if (!conn) {
+		/* In case of error status and there is no connection pending
+		 * just unlock as there is nothing to cleanup.
+		 */
+		if (ev->status)
+			goto unlock;
+
+		/* Connection may not exist if auto-connected. Check the bredr
+		 * allowlist to see if this device is allowed to auto connect.
+		 * If link is an ACL type, create a connection class
+		 * automatically.
+		 *
+		 * Auto-connect will only occur if the event filter is
+		 * programmed with a given address. Right now, event filter is
+		 * only used during suspend.
+		 */
+		if (ev->link_type == ACL_LINK &&
+		    hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
+						      &ev->bdaddr,
+						      BDADDR_BREDR)) {
+			conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
+					    HCI_ROLE_SLAVE);
+			if (!conn) {
+				bt_dev_err(hdev, "no memory for new conn");
+				goto unlock;
+			}
+		} else {
+			if (ev->link_type != SCO_LINK)
+				goto unlock;
+
+			conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
+						       &ev->bdaddr);
+			if (!conn)
+				goto unlock;
+
+			conn->type = SCO_LINK;
+		}
+	}
+
+	/* The HCI_Connection_Complete event is only sent once per connection.
+	 * Processing it more than once per connection can corrupt kernel memory.
+	 *
+	 * As the connection handle is set here for the first time, it indicates
+	 * whether the connection is already set up.
+	 */
+	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+		bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
+		goto unlock;
+	}
+
+	if (!status) {
+		conn->handle = __le16_to_cpu(ev->handle);
+		if (conn->handle > HCI_CONN_HANDLE_MAX) {
+			bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
+				   conn->handle, HCI_CONN_HANDLE_MAX);
+			status = HCI_ERROR_INVALID_PARAMETERS;
+			goto done;
+		}
+
+		if (conn->type == ACL_LINK) {
+			conn->state = BT_CONFIG;
+			hci_conn_hold(conn);
+
+			if (!conn->out && !hci_conn_ssp_enabled(conn) &&
+			    !hci_find_link_key(hdev, &ev->bdaddr))
+				conn->disc_timeout = HCI_PAIRING_TIMEOUT;
+			else
+				conn->disc_timeout = HCI_DISCONN_TIMEOUT;
+		} else
+			conn->state = BT_CONNECTED;
+
+		hci_debugfs_create_conn(conn);
+		hci_conn_add_sysfs(conn);
+
+		if (test_bit(HCI_AUTH, &hdev->flags))
+			set_bit(HCI_CONN_AUTH, &conn->flags);
+
+		if (test_bit(HCI_ENCRYPT, &hdev->flags))
+			set_bit(HCI_CONN_ENCRYPT, &conn->flags);
+
+		/* Get remote features */
+		if (conn->type == ACL_LINK) {
+			struct hci_cp_read_remote_features cp;
+			cp.handle = ev->handle;
+			hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
+				     sizeof(cp), &cp);
+
+			hci_update_scan(hdev);
+		}
+
+		/* Set packet type for incoming connection */
+		if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
+			struct hci_cp_change_conn_ptype cp;
+			cp.handle = ev->handle;
+			cp.pkt_type = cpu_to_le16(conn->pkt_type);
+			hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
+				     &cp);
+		}
+	}
+
+	if (conn->type == ACL_LINK)
+		hci_sco_setup(conn, ev->status);
+
+done:
+	if (status) {
+		hci_conn_failed(conn, status);
+	} else if (ev->link_type == SCO_LINK) {
+		switch (conn->setting & SCO_AIRMODE_MASK) {
+		case SCO_AIRMODE_CVSD:
+			if (hdev->notify)
+				hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
+			break;
+		}
+
+		hci_connect_cfm(conn, status);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+
+	hci_conn_check_pending(hdev);
+}
+
+static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+	struct hci_cp_reject_conn_req cp;
+
+	bacpy(&cp.bdaddr, bdaddr);
+	cp.reason = HCI_ERROR_REJ_BAD_ADDR;
+	hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
+}
+
+static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
+				 struct sk_buff *skb)
+{
+	struct hci_ev_conn_request *ev = data;
+	int mask = hdev->link_mode;
+	struct inquiry_entry *ie;
+	struct hci_conn *conn;
+	__u8 flags = 0;
+
+	bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
+
+	/* Reject incoming connection from device with same BD ADDR against
+	 * CVE-2020-26555
+	 */
+	if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
+		bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
+			   &ev->bdaddr);
+		hci_reject_conn(hdev, &ev->bdaddr);
+		return;
+	}
+
+	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
+				      &flags);
+
+	if (!(mask & HCI_LM_ACCEPT)) {
+		hci_reject_conn(hdev, &ev->bdaddr);
+		return;
+	}
+
+	hci_dev_lock(hdev);
+
+	if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
+				   BDADDR_BREDR)) {
+		hci_reject_conn(hdev, &ev->bdaddr);
+		goto unlock;
+	}
+
+	/* Require HCI_CONNECTABLE or an accept list entry to accept the
+	 * connection. These features are only touched through mgmt so
+	 * only do the checks if HCI_MGMT is set.
+	 */
+	if (hci_dev_test_flag(hdev, HCI_MGMT) &&
+	    !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
+	    !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
+					       BDADDR_BREDR)) {
+		hci_reject_conn(hdev, &ev->bdaddr);
+		goto unlock;
+	}
+
+	/* Connection accepted */
+
+	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+	if (ie)
+		memcpy(ie->data.dev_class, ev->dev_class, 3);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
+			&ev->bdaddr);
+	if (!conn) {
+		conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
+				    HCI_ROLE_SLAVE);
+		if (!conn) {
+			bt_dev_err(hdev, "no memory for new connection");
+			goto unlock;
+		}
+	}
+
+	memcpy(conn->dev_class, ev->dev_class, 3);
+
+	hci_dev_unlock(hdev);
+
+	if (ev->link_type == ACL_LINK ||
+	    (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
+		struct hci_cp_accept_conn_req cp;
+		conn->state = BT_CONNECT;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+
+		if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
+			cp.role = 0x00; /* Become central */
+		else
+			cp.role = 0x01; /* Remain peripheral */
+
+		hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
+	} else if (!(flags & HCI_PROTO_DEFER)) {
+		struct hci_cp_accept_sync_conn_req cp;
+		conn->state = BT_CONNECT;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		cp.pkt_type = cpu_to_le16(conn->pkt_type);
+
+		cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
+		cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
+		cp.max_latency    = 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);
+	} else {
+		conn->state = BT_CONNECT2;
+		hci_connect_cfm(conn, 0);
+	}
+
+	return;
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static u8 hci_to_mgmt_reason(u8 err)
+{
+	switch (err) {
+	case HCI_ERROR_CONNECTION_TIMEOUT:
+		return MGMT_DEV_DISCONN_TIMEOUT;
+	case HCI_ERROR_REMOTE_USER_TERM:
+	case HCI_ERROR_REMOTE_LOW_RESOURCES:
+	case HCI_ERROR_REMOTE_POWER_OFF:
+		return MGMT_DEV_DISCONN_REMOTE;
+	case HCI_ERROR_LOCAL_HOST_TERM:
+		return MGMT_DEV_DISCONN_LOCAL_HOST;
+	default:
+		return MGMT_DEV_DISCONN_UNKNOWN;
+	}
+}
+
+static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_disconn_complete *ev = data;
+	u8 reason;
+	struct hci_conn_params *params;
+	struct hci_conn *conn;
+	bool mgmt_connected;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	if (ev->status) {
+		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
+				       conn->dst_type, ev->status);
+		goto unlock;
+	}
+
+	conn->state = BT_CLOSED;
+
+	mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
+
+	if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
+		reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
+	else
+		reason = hci_to_mgmt_reason(ev->reason);
+
+	mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
+				reason, mgmt_connected);
+
+	if (conn->type == ACL_LINK) {
+		if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
+			hci_remove_link_key(hdev, &conn->dst);
+
+		hci_update_scan(hdev);
+	}
+
+	params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+	if (params) {
+		switch (params->auto_connect) {
+		case HCI_AUTO_CONN_LINK_LOSS:
+			if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
+				break;
+			fallthrough;
+
+		case HCI_AUTO_CONN_DIRECT:
+		case HCI_AUTO_CONN_ALWAYS:
+			hci_pend_le_list_del_init(params);
+			hci_pend_le_list_add(params, &hdev->pend_le_conns);
+			hci_update_passive_scan(hdev);
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	hci_disconn_cfm(conn, ev->reason);
+
+	/* Re-enable advertising if necessary, since it might
+	 * have been disabled by the connection. From the
+	 * HCI_LE_Set_Advertise_Enable command description in
+	 * the core specification (v4.0):
+	 * "The Controller shall continue advertising until the Host
+	 * issues an LE_Set_Advertise_Enable command with
+	 * Advertising_Enable set to 0x00 (Advertising is disabled)
+	 * or until a connection is created or until the Advertising
+	 * is timed out due to Directed Advertising."
+	 */
+	if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
+		hdev->cur_adv_instance = conn->adv_instance;
+		hci_enable_advertising(hdev);
+	}
+
+	hci_conn_del(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_auth_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	if (!ev->status) {
+		clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
+		set_bit(HCI_CONN_AUTH, &conn->flags);
+		conn->sec_level = conn->pending_sec_level;
+	} else {
+		if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
+			set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
+
+		mgmt_auth_failed(conn, ev->status);
+	}
+
+	clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
+
+	if (conn->state == BT_CONFIG) {
+		if (!ev->status && hci_conn_ssp_enabled(conn)) {
+			struct hci_cp_set_conn_encrypt cp;
+			cp.handle  = ev->handle;
+			cp.encrypt = 0x01;
+			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
+				     &cp);
+		} else {
+			conn->state = BT_CONNECTED;
+			hci_connect_cfm(conn, ev->status);
+			hci_conn_drop(conn);
+		}
+	} else {
+		hci_auth_cfm(conn, ev->status);
+
+		hci_conn_hold(conn);
+		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
+		hci_conn_drop(conn);
+	}
+
+	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
+		if (!ev->status) {
+			struct hci_cp_set_conn_encrypt cp;
+			cp.handle  = ev->handle;
+			cp.encrypt = 0x01;
+			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
+				     &cp);
+		} else {
+			clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
+			hci_encrypt_cfm(conn, ev->status);
+		}
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_ev_remote_name *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_conn_check_pending(hdev);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		goto check_auth;
+
+	if (ev->status == 0)
+		hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
+				       strnlen(ev->name, HCI_MAX_NAME_LENGTH));
+	else
+		hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
+
+check_auth:
+	if (!conn)
+		goto unlock;
+
+	if (!hci_outgoing_auth_needed(hdev, conn))
+		goto unlock;
+
+	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
+		struct hci_cp_auth_requested cp;
+
+		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
+
+		cp.handle = __cpu_to_le16(conn->handle);
+		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_encrypt_change *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	if (!ev->status) {
+		if (ev->encrypt) {
+			/* Encryption implies authentication */
+			set_bit(HCI_CONN_AUTH, &conn->flags);
+			set_bit(HCI_CONN_ENCRYPT, &conn->flags);
+			conn->sec_level = conn->pending_sec_level;
+
+			/* P-256 authentication key implies FIPS */
+			if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
+				set_bit(HCI_CONN_FIPS, &conn->flags);
+
+			if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
+			    conn->type == LE_LINK)
+				set_bit(HCI_CONN_AES_CCM, &conn->flags);
+		} else {
+			clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
+			clear_bit(HCI_CONN_AES_CCM, &conn->flags);
+		}
+	}
+
+	/* We should disregard the current RPA and generate a new one
+	 * whenever the encryption procedure fails.
+	 */
+	if (ev->status && conn->type == LE_LINK) {
+		hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
+		hci_adv_instances_set_rpa_expired(hdev, true);
+	}
+
+	clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
+
+	/* Check link security requirements are met */
+	if (!hci_conn_check_link_mode(conn))
+		ev->status = HCI_ERROR_AUTH_FAILURE;
+
+	if (ev->status && conn->state == BT_CONNECTED) {
+		if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
+			set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
+
+		/* Notify upper layers so they can cleanup before
+		 * disconnecting.
+		 */
+		hci_encrypt_cfm(conn, ev->status);
+		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
+		hci_conn_drop(conn);
+		goto unlock;
+	}
+
+	/* Try reading the encryption key size for encrypted ACL links */
+	if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
+		struct hci_cp_read_enc_key_size cp;
+
+		/* Only send HCI_Read_Encryption_Key_Size if the
+		 * controller really supports it. If it doesn't, assume
+		 * the default size (16).
+		 */
+		if (!(hdev->commands[20] & 0x10)) {
+			conn->enc_key_size = HCI_LINK_KEY_SIZE;
+			goto notify;
+		}
+
+		cp.handle = cpu_to_le16(conn->handle);
+		if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
+				 sizeof(cp), &cp)) {
+			bt_dev_err(hdev, "sending read key size failed");
+			conn->enc_key_size = HCI_LINK_KEY_SIZE;
+			goto notify;
+		}
+
+		goto unlock;
+	}
+
+	/* Set the default Authenticated Payload Timeout after
+	 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
+	 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
+	 * sent when the link is active and Encryption is enabled, the conn
+	 * type can be either LE or ACL and controller must support LMP Ping.
+	 * Ensure for AES-CCM encryption as well.
+	 */
+	if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
+	    test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
+	    ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
+	     (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
+		struct hci_cp_write_auth_payload_to cp;
+
+		cp.handle = cpu_to_le16(conn->handle);
+		cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
+		hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
+			     sizeof(cp), &cp);
+	}
+
+notify:
+	hci_encrypt_cfm(conn, ev->status);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
+					     struct sk_buff *skb)
+{
+	struct hci_ev_change_link_key_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn) {
+		if (!ev->status)
+			set_bit(HCI_CONN_SECURE, &conn->flags);
+
+		clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
+
+		hci_key_change_cfm(conn, ev->status);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_remote_features *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	if (!ev->status)
+		memcpy(conn->features[0], ev->features, 8);
+
+	if (conn->state != BT_CONFIG)
+		goto unlock;
+
+	if (!ev->status && lmp_ext_feat_capable(hdev) &&
+	    lmp_ext_feat_capable(conn)) {
+		struct hci_cp_read_remote_ext_features cp;
+		cp.handle = ev->handle;
+		cp.page = 0x01;
+		hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
+			     sizeof(cp), &cp);
+		goto unlock;
+	}
+
+	if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
+		struct hci_cp_remote_name_req cp;
+		memset(&cp, 0, sizeof(cp));
+		bacpy(&cp.bdaddr, &conn->dst);
+		cp.pscan_rep_mode = 0x02;
+		hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
+	} else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
+		mgmt_device_connected(hdev, conn, NULL, 0);
+
+	if (!hci_outgoing_auth_needed(hdev, conn)) {
+		conn->state = BT_CONNECTED;
+		hci_connect_cfm(conn, ev->status);
+		hci_conn_drop(conn);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
+{
+	cancel_delayed_work(&hdev->cmd_timer);
+
+	rcu_read_lock();
+	if (!test_bit(HCI_RESET, &hdev->flags)) {
+		if (ncmd) {
+			cancel_delayed_work(&hdev->ncmd_timer);
+			atomic_set(&hdev->cmd_cnt, 1);
+		} else {
+			if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
+				queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
+						   HCI_NCMD_TIMEOUT);
+		}
+	}
+	rcu_read_unlock();
+}
+
+static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_rp_le_read_buffer_size_v2 *rp = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
+	hdev->le_pkts  = rp->acl_max_pkt;
+	hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
+	hdev->iso_pkts = rp->iso_max_pkt;
+
+	hdev->le_cnt  = hdev->le_pkts;
+	hdev->iso_cnt = hdev->iso_pkts;
+
+	BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
+	       hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_le_set_cig_params *rp = data;
+	struct hci_conn *conn;
+	int i = 0;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	hci_dev_lock(hdev);
+
+	if (rp->status) {
+		while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
+			conn->state = BT_CLOSED;
+			hci_connect_cfm(conn, rp->status);
+			hci_conn_del(conn);
+		}
+		goto unlock;
+	}
+
+	rcu_read_lock();
+
+	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
+		if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
+		    conn->state == BT_CONNECTED)
+			continue;
+
+		conn->handle = __le16_to_cpu(rp->handle[i++]);
+
+		bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
+			   conn->handle, conn->link);
+
+		/* Create CIS if LE is already connected */
+		if (conn->link && conn->link->state == BT_CONNECTED) {
+			rcu_read_unlock();
+			hci_le_create_cis(conn->link);
+			rcu_read_lock();
+		}
+
+		if (i == rp->num_handles)
+			break;
+	}
+
+	rcu_read_unlock();
+
+unlock:
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_rp_le_setup_iso_path *rp = data;
+	struct hci_cp_le_setup_iso_path *cp;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
+	if (!cp)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
+	if (!conn)
+		goto unlock;
+
+	if (rp->status) {
+		hci_connect_cfm(conn, rp->status);
+		hci_conn_del(conn);
+		goto unlock;
+	}
+
+	switch (cp->direction) {
+	/* Input (Host to Controller) */
+	case 0x00:
+		/* Only confirm connection if output only */
+		if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
+			hci_connect_cfm(conn, rp->status);
+		break;
+	/* Output (Controller to Host) */
+	case 0x01:
+		/* Confirm connection since conn->iso_qos is always configured
+		 * last.
+		 */
+		hci_connect_cfm(conn, rp->status);
+		break;
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+	return rp->status;
+}
+
+static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
+{
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+}
+
+static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	struct hci_cp_le_set_per_adv_params *cp;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
+	if (!cp)
+		return rp->status;
+
+	/* TODO: set the conn state */
+	return rp->status;
+}
+
+static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_ev_status *rp = data;
+	__u8 *sent;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
+
+	if (rp->status)
+		return rp->status;
+
+	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
+	if (!sent)
+		return rp->status;
+
+	hci_dev_lock(hdev);
+
+	if (*sent)
+		hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
+	else
+		hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
+
+	hci_dev_unlock(hdev);
+
+	return rp->status;
+}
+
+#define HCI_CC_VL(_op, _func, _min, _max) \
+{ \
+	.op = _op, \
+	.func = _func, \
+	.min_len = _min, \
+	.max_len = _max, \
+}
+
+#define HCI_CC(_op, _func, _len) \
+	HCI_CC_VL(_op, _func, _len, _len)
+
+#define HCI_CC_STATUS(_op, _func) \
+	HCI_CC(_op, _func, sizeof(struct hci_ev_status))
+
+static const struct hci_cc {
+	u16  op;
+	u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
+	u16  min_len;
+	u16  max_len;
+} hci_cc_table[] = {
+	HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
+	HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
+	HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
+	HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
+		      hci_cc_remote_name_req_cancel),
+	HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
+	       sizeof(struct hci_rp_role_discovery)),
+	HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
+	       sizeof(struct hci_rp_read_link_policy)),
+	HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
+	       sizeof(struct hci_rp_write_link_policy)),
+	HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
+	       sizeof(struct hci_rp_read_def_link_policy)),
+	HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
+		      hci_cc_write_def_link_policy),
+	HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
+	HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
+	       sizeof(struct hci_rp_read_stored_link_key)),
+	HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
+	       sizeof(struct hci_rp_delete_stored_link_key)),
+	HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
+	HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
+	       sizeof(struct hci_rp_read_local_name)),
+	HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
+	HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
+	HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
+	HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
+	HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
+	       sizeof(struct hci_rp_read_class_of_dev)),
+	HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
+	HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
+	       sizeof(struct hci_rp_read_voice_setting)),
+	HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
+	HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
+	       sizeof(struct hci_rp_read_num_supported_iac)),
+	HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
+	HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
+	HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
+	       sizeof(struct hci_rp_read_auth_payload_to)),
+	HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
+	       sizeof(struct hci_rp_write_auth_payload_to)),
+	HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
+	       sizeof(struct hci_rp_read_local_version)),
+	HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
+	       sizeof(struct hci_rp_read_local_commands)),
+	HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
+	       sizeof(struct hci_rp_read_local_features)),
+	HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
+	       sizeof(struct hci_rp_read_local_ext_features)),
+	HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
+	       sizeof(struct hci_rp_read_buffer_size)),
+	HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
+	       sizeof(struct hci_rp_read_bd_addr)),
+	HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
+	       sizeof(struct hci_rp_read_local_pairing_opts)),
+	HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
+	       sizeof(struct hci_rp_read_page_scan_activity)),
+	HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
+		      hci_cc_write_page_scan_activity),
+	HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
+	       sizeof(struct hci_rp_read_page_scan_type)),
+	HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
+	HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
+	       sizeof(struct hci_rp_read_data_block_size)),
+	HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
+	       sizeof(struct hci_rp_read_flow_control_mode)),
+	HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
+	       sizeof(struct hci_rp_read_local_amp_info)),
+	HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
+	       sizeof(struct hci_rp_read_clock)),
+	HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
+	       sizeof(struct hci_rp_read_enc_key_size)),
+	HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
+	       sizeof(struct hci_rp_read_inq_rsp_tx_power)),
+	HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
+	       hci_cc_read_def_err_data_reporting,
+	       sizeof(struct hci_rp_read_def_err_data_reporting)),
+	HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
+		      hci_cc_write_def_err_data_reporting),
+	HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
+	       sizeof(struct hci_rp_pin_code_reply)),
+	HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
+	       sizeof(struct hci_rp_pin_code_neg_reply)),
+	HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
+	       sizeof(struct hci_rp_read_local_oob_data)),
+	HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
+	       sizeof(struct hci_rp_read_local_oob_ext_data)),
+	HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
+	       sizeof(struct hci_rp_le_read_buffer_size)),
+	HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
+	       sizeof(struct hci_rp_le_read_local_features)),
+	HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
+	       sizeof(struct hci_rp_le_read_adv_tx_power)),
+	HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
+	       sizeof(struct hci_rp_user_confirm_reply)),
+	HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
+	       sizeof(struct hci_rp_user_confirm_reply)),
+	HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
+	       sizeof(struct hci_rp_user_confirm_reply)),
+	HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
+	       sizeof(struct hci_rp_user_confirm_reply)),
+	HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
+	HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
+	HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
+	HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
+	HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
+	       hci_cc_le_read_accept_list_size,
+	       sizeof(struct hci_rp_le_read_accept_list_size)),
+	HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
+	HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
+		      hci_cc_le_add_to_accept_list),
+	HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
+		      hci_cc_le_del_from_accept_list),
+	HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
+	       sizeof(struct hci_rp_le_read_supported_states)),
+	HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
+	       sizeof(struct hci_rp_le_read_def_data_len)),
+	HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
+		      hci_cc_le_write_def_data_len),
+	HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
+		      hci_cc_le_add_to_resolv_list),
+	HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
+		      hci_cc_le_del_from_resolv_list),
+	HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
+		      hci_cc_le_clear_resolv_list),
+	HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
+	       sizeof(struct hci_rp_le_read_resolv_list_size)),
+	HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
+		      hci_cc_le_set_addr_resolution_enable),
+	HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
+	       sizeof(struct hci_rp_le_read_max_data_len)),
+	HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
+		      hci_cc_write_le_host_supported),
+	HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
+	HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
+	       sizeof(struct hci_rp_read_rssi)),
+	HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
+	       sizeof(struct hci_rp_read_tx_power)),
+	HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
+	HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
+		      hci_cc_le_set_ext_scan_param),
+	HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
+		      hci_cc_le_set_ext_scan_enable),
+	HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
+	HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
+	       hci_cc_le_read_num_adv_sets,
+	       sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
+	HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
+	       sizeof(struct hci_rp_le_set_ext_adv_params)),
+	HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
+		      hci_cc_le_set_ext_adv_enable),
+	HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
+		      hci_cc_le_set_adv_set_random_addr),
+	HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
+	HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
+	HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
+	HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
+		      hci_cc_le_set_per_adv_enable),
+	HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
+	       sizeof(struct hci_rp_le_read_transmit_power)),
+	HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
+	HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
+	       sizeof(struct hci_rp_le_read_buffer_size_v2)),
+	HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
+		  sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
+	HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
+	       sizeof(struct hci_rp_le_setup_iso_path)),
+};
+
+static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
+		      struct sk_buff *skb)
+{
+	void *data;
+
+	if (skb->len < cc->min_len) {
+		bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
+			   cc->op, skb->len, cc->min_len);
+		return HCI_ERROR_UNSPECIFIED;
+	}
+
+	/* Just warn if the length is over max_len size it still be possible to
+	 * partially parse the cc so leave to callback to decide if that is
+	 * acceptable.
+	 */
+	if (skb->len > cc->max_len)
+		bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
+			    cc->op, skb->len, cc->max_len);
+
+	data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
+	if (!data)
+		return HCI_ERROR_UNSPECIFIED;
+
+	return cc->func(hdev, data, skb);
+}
+
+static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
+				 struct sk_buff *skb, u16 *opcode, u8 *status,
+				 hci_req_complete_t *req_complete,
+				 hci_req_complete_skb_t *req_complete_skb)
+{
+	struct hci_ev_cmd_complete *ev = data;
+	int i;
+
+	*opcode = __le16_to_cpu(ev->opcode);
+
+	bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
+
+	for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
+		if (hci_cc_table[i].op == *opcode) {
+			*status = hci_cc_func(hdev, &hci_cc_table[i], skb);
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(hci_cc_table)) {
+		/* Unknown opcode, assume byte 0 contains the status, so
+		 * that e.g. __hci_cmd_sync() properly returns errors
+		 * for vendor specific commands send by HCI drivers.
+		 * If a vendor doesn't actually follow this convention we may
+		 * need to introduce a vendor CC table in order to properly set
+		 * the status.
+		 */
+		*status = skb->data[0];
+	}
+
+	handle_cmd_cnt_and_timer(hdev, ev->ncmd);
+
+	hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
+			     req_complete_skb);
+
+	if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
+		bt_dev_err(hdev,
+			   "unexpected event for opcode 0x%4.4x", *opcode);
+		return;
+	}
+
+	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
+		queue_work(hdev->workqueue, &hdev->cmd_work);
+}
+
+static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
+{
+	struct hci_cp_le_create_cis *cp;
+	int i;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	if (!status)
+		return;
+
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
+	if (!cp)
+		return;
+
+	hci_dev_lock(hdev);
+
+	/* Remove connection if command failed */
+	for (i = 0; cp->num_cis; cp->num_cis--, i++) {
+		struct hci_conn *conn;
+		u16 handle;
+
+		handle = __le16_to_cpu(cp->cis[i].cis_handle);
+
+		conn = hci_conn_hash_lookup_handle(hdev, handle);
+		if (conn) {
+			conn->state = BT_CLOSED;
+			hci_connect_cfm(conn, status);
+			hci_conn_del(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+#define HCI_CS(_op, _func) \
+{ \
+	.op = _op, \
+	.func = _func, \
+}
+
+static const struct hci_cs {
+	u16  op;
+	void (*func)(struct hci_dev *hdev, __u8 status);
+} hci_cs_table[] = {
+	HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
+	HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
+	HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
+	HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
+	HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
+	HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
+	HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
+	HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
+	HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
+	       hci_cs_read_remote_ext_features),
+	HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
+	HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
+	       hci_cs_enhanced_setup_sync_conn),
+	HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
+	HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
+	HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
+	HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
+	HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
+	HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
+	HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
+	HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
+	HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
+};
+
+static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
+			       struct sk_buff *skb, u16 *opcode, u8 *status,
+			       hci_req_complete_t *req_complete,
+			       hci_req_complete_skb_t *req_complete_skb)
+{
+	struct hci_ev_cmd_status *ev = data;
+	int i;
+
+	*opcode = __le16_to_cpu(ev->opcode);
+	*status = ev->status;
+
+	bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
+
+	for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
+		if (hci_cs_table[i].op == *opcode) {
+			hci_cs_table[i].func(hdev, ev->status);
+			break;
+		}
+	}
+
+	handle_cmd_cnt_and_timer(hdev, ev->ncmd);
+
+	/* Indicate request completion if the command failed. Also, if
+	 * we're not waiting for a special event and we get a success
+	 * command status we should try to flag the request as completed
+	 * (since for this kind of commands there will not be a command
+	 * complete event).
+	 */
+	if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
+		hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
+				     req_complete_skb);
+		if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
+			bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
+				   *opcode);
+			return;
+		}
+	}
+
+	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
+		queue_work(hdev->workqueue, &hdev->cmd_work);
+}
+
+static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_hardware_error *ev = data;
+
+	bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
+
+	hdev->hw_error_code = ev->code;
+
+	queue_work(hdev->req_workqueue, &hdev->error_reset);
+}
+
+static void hci_role_change_evt(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_ev_role_change *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (conn) {
+		if (!ev->status)
+			conn->role = ev->role;
+
+		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
+
+		hci_role_switch_cfm(conn, ev->status, ev->role);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_num_comp_pkts *ev = data;
+	int i;
+
+	if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
+			     flex_array_size(ev, handles, ev->num)))
+		return;
+
+	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
+		bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
+		return;
+	}
+
+	bt_dev_dbg(hdev, "num %d", ev->num);
+
+	for (i = 0; i < ev->num; i++) {
+		struct hci_comp_pkts_info *info = &ev->handles[i];
+		struct hci_conn *conn;
+		__u16  handle, count;
+
+		handle = __le16_to_cpu(info->handle);
+		count  = __le16_to_cpu(info->count);
+
+		conn = hci_conn_hash_lookup_handle(hdev, handle);
+		if (!conn)
+			continue;
+
+		conn->sent -= count;
+
+		switch (conn->type) {
+		case ACL_LINK:
+			hdev->acl_cnt += count;
+			if (hdev->acl_cnt > hdev->acl_pkts)
+				hdev->acl_cnt = hdev->acl_pkts;
+			break;
+
+		case LE_LINK:
+			if (hdev->le_pkts) {
+				hdev->le_cnt += count;
+				if (hdev->le_cnt > hdev->le_pkts)
+					hdev->le_cnt = hdev->le_pkts;
+			} else {
+				hdev->acl_cnt += count;
+				if (hdev->acl_cnt > hdev->acl_pkts)
+					hdev->acl_cnt = hdev->acl_pkts;
+			}
+			break;
+
+		case SCO_LINK:
+			hdev->sco_cnt += count;
+			if (hdev->sco_cnt > hdev->sco_pkts)
+				hdev->sco_cnt = hdev->sco_pkts;
+			break;
+
+		case ISO_LINK:
+			if (hdev->iso_pkts) {
+				hdev->iso_cnt += count;
+				if (hdev->iso_cnt > hdev->iso_pkts)
+					hdev->iso_cnt = hdev->iso_pkts;
+			} else if (hdev->le_pkts) {
+				hdev->le_cnt += count;
+				if (hdev->le_cnt > hdev->le_pkts)
+					hdev->le_cnt = hdev->le_pkts;
+			} else {
+				hdev->acl_cnt += count;
+				if (hdev->acl_cnt > hdev->acl_pkts)
+					hdev->acl_cnt = hdev->acl_pkts;
+			}
+			break;
+
+		default:
+			bt_dev_err(hdev, "unknown type %d conn %p",
+				   conn->type, conn);
+			break;
+		}
+	}
+
+	queue_work(hdev->workqueue, &hdev->tx_work);
+}
+
+static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
+						 __u16 handle)
+{
+	struct hci_chan *chan;
+
+	switch (hdev->dev_type) {
+	case HCI_PRIMARY:
+		return hci_conn_hash_lookup_handle(hdev, handle);
+	case HCI_AMP:
+		chan = hci_chan_lookup_handle(hdev, handle);
+		if (chan)
+			return chan->conn;
+		break;
+	default:
+		bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
+		break;
+	}
+
+	return NULL;
+}
+
+static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_num_comp_blocks *ev = data;
+	int i;
+
+	if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
+			     flex_array_size(ev, handles, ev->num_hndl)))
+		return;
+
+	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
+		bt_dev_err(hdev, "wrong event for mode %d",
+			   hdev->flow_ctl_mode);
+		return;
+	}
+
+	bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
+		   ev->num_hndl);
+
+	for (i = 0; i < ev->num_hndl; i++) {
+		struct hci_comp_blocks_info *info = &ev->handles[i];
+		struct hci_conn *conn = NULL;
+		__u16  handle, block_count;
+
+		handle = __le16_to_cpu(info->handle);
+		block_count = __le16_to_cpu(info->blocks);
+
+		conn = __hci_conn_lookup_handle(hdev, handle);
+		if (!conn)
+			continue;
+
+		conn->sent -= block_count;
+
+		switch (conn->type) {
+		case ACL_LINK:
+		case AMP_LINK:
+			hdev->block_cnt += block_count;
+			if (hdev->block_cnt > hdev->num_blocks)
+				hdev->block_cnt = hdev->num_blocks;
+			break;
+
+		default:
+			bt_dev_err(hdev, "unknown type %d conn %p",
+				   conn->type, conn);
+			break;
+		}
+	}
+
+	queue_work(hdev->workqueue, &hdev->tx_work);
+}
+
+static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
+				struct sk_buff *skb)
+{
+	struct hci_ev_mode_change *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn) {
+		conn->mode = ev->mode;
+
+		if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
+					&conn->flags)) {
+			if (conn->mode == HCI_CM_ACTIVE)
+				set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
+			else
+				clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
+		}
+
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
+			hci_sco_setup(conn, ev->status);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_pin_code_req *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		goto unlock;
+
+	if (conn->state == BT_CONNECTED) {
+		hci_conn_hold(conn);
+		conn->disc_timeout = HCI_PAIRING_TIMEOUT;
+		hci_conn_drop(conn);
+	}
+
+	if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
+	    !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
+		hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
+			     sizeof(ev->bdaddr), &ev->bdaddr);
+	} else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
+		u8 secure;
+
+		if (conn->pending_sec_level == BT_SECURITY_HIGH)
+			secure = 1;
+		else
+			secure = 0;
+
+		mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
+{
+	if (key_type == HCI_LK_CHANGED_COMBINATION)
+		return;
+
+	conn->pin_length = pin_len;
+	conn->key_type = key_type;
+
+	switch (key_type) {
+	case HCI_LK_LOCAL_UNIT:
+	case HCI_LK_REMOTE_UNIT:
+	case HCI_LK_DEBUG_COMBINATION:
+		return;
+	case HCI_LK_COMBINATION:
+		if (pin_len == 16)
+			conn->pending_sec_level = BT_SECURITY_HIGH;
+		else
+			conn->pending_sec_level = BT_SECURITY_MEDIUM;
+		break;
+	case HCI_LK_UNAUTH_COMBINATION_P192:
+	case HCI_LK_UNAUTH_COMBINATION_P256:
+		conn->pending_sec_level = BT_SECURITY_MEDIUM;
+		break;
+	case HCI_LK_AUTH_COMBINATION_P192:
+		conn->pending_sec_level = BT_SECURITY_HIGH;
+		break;
+	case HCI_LK_AUTH_COMBINATION_P256:
+		conn->pending_sec_level = BT_SECURITY_FIPS;
+		break;
+	}
+}
+
+static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_link_key_req *ev = data;
+	struct hci_cp_link_key_reply cp;
+	struct hci_conn *conn;
+	struct link_key *key;
+
+	bt_dev_dbg(hdev, "");
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		return;
+
+	hci_dev_lock(hdev);
+
+	key = hci_find_link_key(hdev, &ev->bdaddr);
+	if (!key) {
+		bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
+		goto not_found;
+	}
+
+	bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (conn) {
+		clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
+
+		if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
+		     key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
+		    conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
+			bt_dev_dbg(hdev, "ignoring unauthenticated key");
+			goto not_found;
+		}
+
+		if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
+		    (conn->pending_sec_level == BT_SECURITY_HIGH ||
+		     conn->pending_sec_level == BT_SECURITY_FIPS)) {
+			bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
+			goto not_found;
+		}
+
+		conn_set_key(conn, key->type, key->pin_len);
+	}
+
+	bacpy(&cp.bdaddr, &ev->bdaddr);
+	memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
+
+	hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
+
+	hci_dev_unlock(hdev);
+
+	return;
+
+not_found:
+	hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
+	hci_dev_unlock(hdev);
+}
+
+static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_link_key_notify *ev = data;
+	struct hci_conn *conn;
+	struct link_key *key;
+	bool persistent;
+	u8 pin_len = 0;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		goto unlock;
+
+	/* Ignore NULL link key against CVE-2020-26555 */
+	if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
+		bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
+			   &ev->bdaddr);
+		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
+		hci_conn_drop(conn);
+		goto unlock;
+	}
+
+	hci_conn_hold(conn);
+	conn->disc_timeout = HCI_DISCONN_TIMEOUT;
+	hci_conn_drop(conn);
+
+	set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
+	conn_set_key(conn, ev->key_type, conn->pin_length);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		goto unlock;
+
+	key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
+			        ev->key_type, pin_len, &persistent);
+	if (!key)
+		goto unlock;
+
+	/* Update connection information since adding the key will have
+	 * fixed up the type in the case of changed combination keys.
+	 */
+	if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
+		conn_set_key(conn, key->type, key->pin_len);
+
+	mgmt_new_link_key(hdev, key, persistent);
+
+	/* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
+	 * is set. If it's not set simply remove the key from the kernel
+	 * list (we've still notified user space about it but with
+	 * store_hint being 0).
+	 */
+	if (key->type == HCI_LK_DEBUG_COMBINATION &&
+	    !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
+		list_del_rcu(&key->list);
+		kfree_rcu(key, rcu);
+		goto unlock;
+	}
+
+	if (persistent)
+		clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
+	else
+		set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
+				 struct sk_buff *skb)
+{
+	struct hci_ev_clock_offset *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn && !ev->status) {
+		struct inquiry_entry *ie;
+
+		ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
+		if (ie) {
+			ie->data.clock_offset = ev->clock_offset;
+			ie->timestamp = jiffies;
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_pkt_type_change *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn && !ev->status)
+		conn->pkt_type = __le16_to_cpu(ev->pkt_type);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_pscan_rep_mode *ev = data;
+	struct inquiry_entry *ie;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+	if (ie) {
+		ie->data.pscan_rep_mode = ev->pscan_rep_mode;
+		ie->timestamp = jiffies;
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
+					     struct sk_buff *skb)
+{
+	struct hci_ev_inquiry_result_rssi *ev = edata;
+	struct inquiry_data data;
+	int i;
+
+	bt_dev_dbg(hdev, "num_rsp %d", ev->num);
+
+	if (!ev->num)
+		return;
+
+	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
+		return;
+
+	hci_dev_lock(hdev);
+
+	if (skb->len == array_size(ev->num,
+				   sizeof(struct inquiry_info_rssi_pscan))) {
+		struct inquiry_info_rssi_pscan *info;
+
+		for (i = 0; i < ev->num; i++) {
+			u32 flags;
+
+			info = hci_ev_skb_pull(hdev, skb,
+					       HCI_EV_INQUIRY_RESULT_WITH_RSSI,
+					       sizeof(*info));
+			if (!info) {
+				bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
+					   HCI_EV_INQUIRY_RESULT_WITH_RSSI);
+				goto unlock;
+			}
+
+			bacpy(&data.bdaddr, &info->bdaddr);
+			data.pscan_rep_mode	= info->pscan_rep_mode;
+			data.pscan_period_mode	= info->pscan_period_mode;
+			data.pscan_mode		= info->pscan_mode;
+			memcpy(data.dev_class, info->dev_class, 3);
+			data.clock_offset	= info->clock_offset;
+			data.rssi		= info->rssi;
+			data.ssp_mode		= 0x00;
+
+			flags = hci_inquiry_cache_update(hdev, &data, false);
+
+			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
+					  info->dev_class, info->rssi,
+					  flags, NULL, 0, NULL, 0, 0);
+		}
+	} else if (skb->len == array_size(ev->num,
+					  sizeof(struct inquiry_info_rssi))) {
+		struct inquiry_info_rssi *info;
+
+		for (i = 0; i < ev->num; i++) {
+			u32 flags;
+
+			info = hci_ev_skb_pull(hdev, skb,
+					       HCI_EV_INQUIRY_RESULT_WITH_RSSI,
+					       sizeof(*info));
+			if (!info) {
+				bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
+					   HCI_EV_INQUIRY_RESULT_WITH_RSSI);
+				goto unlock;
+			}
+
+			bacpy(&data.bdaddr, &info->bdaddr);
+			data.pscan_rep_mode	= info->pscan_rep_mode;
+			data.pscan_period_mode	= info->pscan_period_mode;
+			data.pscan_mode		= 0x00;
+			memcpy(data.dev_class, info->dev_class, 3);
+			data.clock_offset	= info->clock_offset;
+			data.rssi		= info->rssi;
+			data.ssp_mode		= 0x00;
+
+			flags = hci_inquiry_cache_update(hdev, &data, false);
+
+			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
+					  info->dev_class, info->rssi,
+					  flags, NULL, 0, NULL, 0, 0);
+		}
+	} else {
+		bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
+			   HCI_EV_INQUIRY_RESULT_WITH_RSSI);
+	}
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_ev_remote_ext_features *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	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;
+
+		ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
+		if (ie)
+			ie->data.ssp_mode = (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 (ev->features[0] & LMP_HOST_SC)
+			set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
+	}
+
+	if (conn->state != BT_CONFIG)
+		goto unlock;
+
+	if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
+		struct hci_cp_remote_name_req cp;
+		memset(&cp, 0, sizeof(cp));
+		bacpy(&cp.bdaddr, &conn->dst);
+		cp.pscan_rep_mode = 0x02;
+		hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
+	} else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
+		mgmt_device_connected(hdev, conn, NULL, 0);
+
+	if (!hci_outgoing_auth_needed(hdev, conn)) {
+		conn->state = BT_CONNECTED;
+		hci_connect_cfm(conn, ev->status);
+		hci_conn_drop(conn);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
+				       struct sk_buff *skb)
+{
+	struct hci_ev_sync_conn_complete *ev = data;
+	struct hci_conn *conn;
+	u8 status = ev->status;
+
+	switch (ev->link_type) {
+	case SCO_LINK:
+	case ESCO_LINK:
+		break;
+	default:
+		/* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
+		 * for HCI_Synchronous_Connection_Complete is limited to
+		 * either SCO or eSCO
+		 */
+		bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
+		return;
+	}
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
+	if (!conn) {
+		if (ev->link_type == ESCO_LINK)
+			goto unlock;
+
+		/* When the link type in the event indicates SCO connection
+		 * and lookup of the connection object fails, then check
+		 * if an eSCO connection object exists.
+		 *
+		 * The core limits the synchronous connections to either
+		 * SCO or eSCO. The eSCO connection is preferred and tried
+		 * to be setup first and until successfully established,
+		 * the link type will be hinted as eSCO.
+		 */
+		conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
+		if (!conn)
+			goto unlock;
+	}
+
+	/* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
+	 * Processing it more than once per connection can corrupt kernel memory.
+	 *
+	 * As the connection handle is set here for the first time, it indicates
+	 * whether the connection is already set up.
+	 */
+	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+		bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
+		goto unlock;
+	}
+
+	switch (status) {
+	case 0x00:
+		conn->handle = __le16_to_cpu(ev->handle);
+		if (conn->handle > HCI_CONN_HANDLE_MAX) {
+			bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
+				   conn->handle, HCI_CONN_HANDLE_MAX);
+			status = HCI_ERROR_INVALID_PARAMETERS;
+			conn->state = BT_CLOSED;
+			break;
+		}
+
+		conn->state  = BT_CONNECTED;
+		conn->type   = ev->link_type;
+
+		hci_debugfs_create_conn(conn);
+		hci_conn_add_sysfs(conn);
+		break;
+
+	case 0x10:	/* Connection Accept Timeout */
+	case 0x0d:	/* Connection Rejected due to Limited Resources */
+	case 0x11:	/* Unsupported Feature or Parameter Value */
+	case 0x1c:	/* SCO interval rejected */
+	case 0x1a:	/* Unsupported Remote Feature */
+	case 0x1e:	/* Invalid LMP Parameters */
+	case 0x1f:	/* Unspecified error */
+	case 0x20:	/* Unsupported LMP Parameter value */
+		if (conn->out) {
+			conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
+					(hdev->esco_type & EDR_ESCO_MASK);
+			if (hci_setup_sync(conn, conn->link->handle))
+				goto unlock;
+		}
+		fallthrough;
+
+	default:
+		conn->state = BT_CLOSED;
+		break;
+	}
+
+	bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
+	/* Notify only in case of SCO over HCI transport data path which
+	 * is zero and non-zero value shall be non-HCI transport data path
+	 */
+	if (conn->codec.data_path == 0 && hdev->notify) {
+		switch (ev->air_mode) {
+		case 0x02:
+			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
+			break;
+		case 0x03:
+			hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
+			break;
+		}
+	}
+
+	hci_connect_cfm(conn, status);
+	if (status)
+		hci_conn_del(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static inline size_t eir_get_length(u8 *eir, size_t eir_len)
+{
+	size_t parsed = 0;
+
+	while (parsed < eir_len) {
+		u8 field_len = eir[0];
+
+		if (field_len == 0)
+			return parsed;
+
+		parsed += field_len + 1;
+		eir += field_len + 1;
+	}
+
+	return eir_len;
+}
+
+static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_ext_inquiry_result *ev = edata;
+	struct inquiry_data data;
+	size_t eir_len;
+	int i;
+
+	if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
+			     flex_array_size(ev, info, ev->num)))
+		return;
+
+	bt_dev_dbg(hdev, "num %d", ev->num);
+
+	if (!ev->num)
+		return;
+
+	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
+		return;
+
+	hci_dev_lock(hdev);
+
+	for (i = 0; i < ev->num; i++) {
+		struct extended_inquiry_info *info = &ev->info[i];
+		u32 flags;
+		bool name_known;
+
+		bacpy(&data.bdaddr, &info->bdaddr);
+		data.pscan_rep_mode	= info->pscan_rep_mode;
+		data.pscan_period_mode	= info->pscan_period_mode;
+		data.pscan_mode		= 0x00;
+		memcpy(data.dev_class, info->dev_class, 3);
+		data.clock_offset	= info->clock_offset;
+		data.rssi		= info->rssi;
+		data.ssp_mode		= 0x01;
+
+		if (hci_dev_test_flag(hdev, HCI_MGMT))
+			name_known = eir_get_data(info->data,
+						  sizeof(info->data),
+						  EIR_NAME_COMPLETE, NULL);
+		else
+			name_known = true;
+
+		flags = hci_inquiry_cache_update(hdev, &data, name_known);
+
+		eir_len = eir_get_length(info->data, sizeof(info->data));
+
+		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
+				  info->dev_class, info->rssi,
+				  flags, info->data, eir_len, NULL, 0, 0);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_key_refresh_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
+		   __le16_to_cpu(ev->handle));
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	/* For BR/EDR the necessary steps are taken through the
+	 * auth_complete event.
+	 */
+	if (conn->type != LE_LINK)
+		goto unlock;
+
+	if (!ev->status)
+		conn->sec_level = conn->pending_sec_level;
+
+	clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
+
+	if (ev->status && conn->state == BT_CONNECTED) {
+		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
+		hci_conn_drop(conn);
+		goto unlock;
+	}
+
+	if (conn->state == BT_CONFIG) {
+		if (!ev->status)
+			conn->state = BT_CONNECTED;
+
+		hci_connect_cfm(conn, ev->status);
+		hci_conn_drop(conn);
+	} else {
+		hci_auth_cfm(conn, ev->status);
+
+		hci_conn_hold(conn);
+		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
+		hci_conn_drop(conn);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static u8 hci_get_auth_req(struct hci_conn *conn)
+{
+	/* If remote requests no-bonding follow that lead */
+	if (conn->remote_auth == HCI_AT_NO_BONDING ||
+	    conn->remote_auth == HCI_AT_NO_BONDING_MITM)
+		return conn->remote_auth | (conn->auth_type & 0x01);
+
+	/* If both remote and local have enough IO capabilities, require
+	 * MITM protection
+	 */
+	if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
+	    conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
+		return conn->remote_auth | 0x01;
+
+	/* No MITM protection possible so ignore remote requirement */
+	return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
+}
+
+static u8 bredr_oob_data_present(struct hci_conn *conn)
+{
+	struct hci_dev *hdev = conn->hdev;
+	struct oob_data *data;
+
+	data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
+	if (!data)
+		return 0x00;
+
+	if (bredr_sc_enabled(hdev)) {
+		/* When Secure Connections is enabled, then just
+		 * return the present value stored with the OOB
+		 * data. The stored value contains the right present
+		 * information. However it can only be trusted when
+		 * not in Secure Connection Only mode.
+		 */
+		if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
+			return data->present;
+
+		/* When Secure Connections Only mode is enabled, then
+		 * the P-256 values are required. If they are not
+		 * available, then do not declare that OOB data is
+		 * present.
+		 */
+		if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
+		    !crypto_memneq(data->hash256, ZERO_KEY, 16))
+			return 0x00;
+
+		return 0x02;
+	}
+
+	/* When Secure Connections is not enabled or actually
+	 * not supported by the hardware, then check that if
+	 * P-192 data values are present.
+	 */
+	if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
+	    !crypto_memneq(data->hash192, ZERO_KEY, 16))
+		return 0x00;
+
+	return 0x01;
+}
+
+static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_io_capa_request *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn || !hci_conn_ssp_enabled(conn))
+		goto unlock;
+
+	hci_conn_hold(conn);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		goto unlock;
+
+	/* Allow pairing if we're pairable, the initiators of the
+	 * pairing or if the remote is not requesting bonding.
+	 */
+	if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
+	    test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
+	    (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
+		struct hci_cp_io_capability_reply cp;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		/* Change the IO capability from KeyboardDisplay
+		 * to DisplayYesNo as it is not supported by BT spec. */
+		cp.capability = (conn->io_capability == 0x04) ?
+				HCI_IO_DISPLAY_YESNO : conn->io_capability;
+
+		/* If we are initiators, there is no remote information yet */
+		if (conn->remote_auth == 0xff) {
+			/* Request MITM protection if our IO caps allow it
+			 * except for the no-bonding case.
+			 */
+			if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
+			    conn->auth_type != HCI_AT_NO_BONDING)
+				conn->auth_type |= 0x01;
+		} else {
+			conn->auth_type = hci_get_auth_req(conn);
+		}
+
+		/* If we're not bondable, force one of the non-bondable
+		 * authentication requirement values.
+		 */
+		if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
+			conn->auth_type &= HCI_AT_NO_BONDING_MITM;
+
+		cp.authentication = conn->auth_type;
+		cp.oob_data = bredr_oob_data_present(conn);
+
+		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
+			     sizeof(cp), &cp);
+	} else {
+		struct hci_cp_io_capability_neg_reply cp;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
+
+		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
+			     sizeof(cp), &cp);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_io_capa_reply *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		goto unlock;
+
+	conn->remote_cap = ev->capability;
+	conn->remote_auth = ev->authentication;
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_user_confirm_req *ev = data;
+	int loc_mitm, rem_mitm, confirm_hint = 0;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		goto unlock;
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		goto unlock;
+
+	loc_mitm = (conn->auth_type & 0x01);
+	rem_mitm = (conn->remote_auth & 0x01);
+
+	/* If we require MITM but the remote device can't provide that
+	 * (it has NoInputNoOutput) then reject the confirmation
+	 * request. We check the security level here since it doesn't
+	 * necessarily match conn->auth_type.
+	 */
+	if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
+	    conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
+		bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
+		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
+			     sizeof(ev->bdaddr), &ev->bdaddr);
+		goto unlock;
+	}
+
+	/* If no side requires MITM protection; auto-accept */
+	if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
+	    (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
+
+		/* If we're not the initiators request authorization to
+		 * proceed from user space (mgmt_user_confirm with
+		 * confirm_hint set to 1). The exception is if neither
+		 * side had MITM or if the local IO capability is
+		 * NoInputNoOutput, in which case we do auto-accept
+		 */
+		if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
+		    conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
+		    (loc_mitm || rem_mitm)) {
+			bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
+			confirm_hint = 1;
+			goto confirm;
+		}
+
+		/* If there already exists link key in local host, leave the
+		 * decision to user space since the remote device could be
+		 * legitimate or malicious.
+		 */
+		if (hci_find_link_key(hdev, &ev->bdaddr)) {
+			bt_dev_dbg(hdev, "Local host already has link key");
+			confirm_hint = 1;
+			goto confirm;
+		}
+
+		BT_DBG("Auto-accept of user confirmation with %ums delay",
+		       hdev->auto_accept_delay);
+
+		if (hdev->auto_accept_delay > 0) {
+			int delay = msecs_to_jiffies(hdev->auto_accept_delay);
+			queue_delayed_work(conn->hdev->workqueue,
+					   &conn->auto_accept_work, delay);
+			goto unlock;
+		}
+
+		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
+			     sizeof(ev->bdaddr), &ev->bdaddr);
+		goto unlock;
+	}
+
+confirm:
+	mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
+				  le32_to_cpu(ev->passkey), confirm_hint);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_user_passkey_req *ev = data;
+
+	bt_dev_dbg(hdev, "");
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
+}
+
+static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_ev_user_passkey_notify *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		return;
+
+	conn->passkey_notify = __le32_to_cpu(ev->passkey);
+	conn->passkey_entered = 0;
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
+					 conn->dst_type, conn->passkey_notify,
+					 conn->passkey_entered);
+}
+
+static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_ev_keypress_notify *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn)
+		return;
+
+	switch (ev->type) {
+	case HCI_KEYPRESS_STARTED:
+		conn->passkey_entered = 0;
+		return;
+
+	case HCI_KEYPRESS_ENTERED:
+		conn->passkey_entered++;
+		break;
+
+	case HCI_KEYPRESS_ERASED:
+		conn->passkey_entered--;
+		break;
+
+	case HCI_KEYPRESS_CLEARED:
+		conn->passkey_entered = 0;
+		break;
+
+	case HCI_KEYPRESS_COMPLETED:
+		return;
+	}
+
+	if (hci_dev_test_flag(hdev, HCI_MGMT))
+		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
+					 conn->dst_type, conn->passkey_notify,
+					 conn->passkey_entered);
+}
+
+static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_simple_pair_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+	if (!conn || !hci_conn_ssp_enabled(conn))
+		goto unlock;
+
+	/* Reset the authentication requirement to unknown */
+	conn->remote_auth = 0xff;
+
+	/* To avoid duplicate auth_failed events to user space we check
+	 * the HCI_CONN_AUTH_PEND flag which will be set if we
+	 * initiated the authentication. A traditional auth_complete
+	 * event gets always produced as initiator and is also mapped to
+	 * the mgmt_auth_failed event */
+	if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
+		mgmt_auth_failed(conn, ev->status);
+
+	hci_conn_drop(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_remote_host_features *ev = data;
+	struct inquiry_entry *ie;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "");
+
+	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);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_remote_oob_data_request *ev = edata;
+	struct oob_data *data;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	if (!hci_dev_test_flag(hdev, HCI_MGMT))
+		goto unlock;
+
+	data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
+	if (!data) {
+		struct hci_cp_remote_oob_data_neg_reply cp;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
+			     sizeof(cp), &cp);
+		goto unlock;
+	}
+
+	if (bredr_sc_enabled(hdev)) {
+		struct hci_cp_remote_oob_ext_data_reply cp;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
+			memset(cp.hash192, 0, sizeof(cp.hash192));
+			memset(cp.rand192, 0, sizeof(cp.rand192));
+		} else {
+			memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
+			memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
+		}
+		memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
+		memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
+
+		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
+			     sizeof(cp), &cp);
+	} else {
+		struct hci_cp_remote_oob_data_reply cp;
+
+		bacpy(&cp.bdaddr, &ev->bdaddr);
+		memcpy(cp.hash, data->hash192, sizeof(cp.hash));
+		memcpy(cp.rand, data->rand192, sizeof(cp.rand));
+
+		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
+			     sizeof(cp), &cp);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+#if IS_ENABLED(CONFIG_BT_HS)
+static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_channel_selected *ev = data;
+	struct hci_conn *hcon;
+
+	bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
+
+	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
+	if (!hcon)
+		return;
+
+	amp_read_loc_assoc_final_data(hdev, hcon);
+}
+
+static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_phy_link_complete *ev = data;
+	struct hci_conn *hcon, *bredr_hcon;
+
+	bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
+		   ev->status);
+
+	hci_dev_lock(hdev);
+
+	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
+	if (!hcon)
+		goto unlock;
+
+	if (!hcon->amp_mgr)
+		goto unlock;
+
+	if (ev->status) {
+		hci_conn_del(hcon);
+		goto unlock;
+	}
+
+	bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
+
+	hcon->state = BT_CONNECTED;
+	bacpy(&hcon->dst, &bredr_hcon->dst);
+
+	hci_conn_hold(hcon);
+	hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
+	hci_conn_drop(hcon);
+
+	hci_debugfs_create_conn(hcon);
+	hci_conn_add_sysfs(hcon);
+
+	amp_physical_cfm(bredr_hcon, hcon);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_logical_link_complete *ev = data;
+	struct hci_conn *hcon;
+	struct hci_chan *hchan;
+	struct amp_mgr *mgr;
+
+	bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
+		   le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
+
+	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
+	if (!hcon)
+		return;
+
+	/* Create AMP hchan */
+	hchan = hci_chan_create(hcon);
+	if (!hchan)
+		return;
+
+	hchan->handle = le16_to_cpu(ev->handle);
+	hchan->amp = true;
+
+	BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
+
+	mgr = hcon->amp_mgr;
+	if (mgr && mgr->bredr_chan) {
+		struct l2cap_chan *bredr_chan = mgr->bredr_chan;
+
+		l2cap_chan_lock(bredr_chan);
+
+		bredr_chan->conn->mtu = hdev->block_mtu;
+		l2cap_logical_cfm(bredr_chan, hchan, 0);
+		hci_conn_hold(hcon);
+
+		l2cap_chan_unlock(bredr_chan);
+	}
+}
+
+static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
+					     struct sk_buff *skb)
+{
+	struct hci_ev_disconn_logical_link_complete *ev = data;
+	struct hci_chan *hchan;
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
+		   le16_to_cpu(ev->handle), ev->status);
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
+	if (!hchan || !hchan->amp)
+		goto unlock;
+
+	amp_destroy_logical_link(hchan, ev->reason);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
+					     struct sk_buff *skb)
+{
+	struct hci_ev_disconn_phy_link_complete *ev = data;
+	struct hci_conn *hcon;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
+	if (hcon && hcon->type == AMP_LINK) {
+		hcon->state = BT_CLOSED;
+		hci_disconn_cfm(hcon, ev->reason);
+		hci_conn_del(hcon);
+	}
+
+	hci_dev_unlock(hdev);
+}
+#endif
+
+static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
+				u8 bdaddr_type, bdaddr_t *local_rpa)
+{
+	if (conn->out) {
+		conn->dst_type = bdaddr_type;
+		conn->resp_addr_type = bdaddr_type;
+		bacpy(&conn->resp_addr, bdaddr);
+
+		/* Check if the controller has set a Local RPA then it must be
+		 * used instead or hdev->rpa.
+		 */
+		if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
+			conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->init_addr, local_rpa);
+		} else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
+			conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->init_addr, &conn->hdev->rpa);
+		} else {
+			hci_copy_identity_address(conn->hdev, &conn->init_addr,
+						  &conn->init_addr_type);
+		}
+	} else {
+		conn->resp_addr_type = conn->hdev->adv_addr_type;
+		/* Check if the controller has set a Local RPA then it must be
+		 * used instead or hdev->rpa.
+		 */
+		if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
+			conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->resp_addr, local_rpa);
+		} else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
+			/* In case of ext adv, resp_addr will be updated in
+			 * Adv Terminated event.
+			 */
+			if (!ext_adv_capable(conn->hdev))
+				bacpy(&conn->resp_addr,
+				      &conn->hdev->random_addr);
+		} else {
+			bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
+		}
+
+		conn->init_addr_type = bdaddr_type;
+		bacpy(&conn->init_addr, bdaddr);
+
+		/* For incoming connections, set the default minimum
+		 * and maximum connection interval. They will be used
+		 * to check if the parameters are in range and if not
+		 * trigger the connection update procedure.
+		 */
+		conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
+		conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
+	}
+}
+
+static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
+				 bdaddr_t *bdaddr, u8 bdaddr_type,
+				 bdaddr_t *local_rpa, u8 role, u16 handle,
+				 u16 interval, u16 latency,
+				 u16 supervision_timeout)
+{
+	struct hci_conn_params *params;
+	struct hci_conn *conn;
+	struct smp_irk *irk;
+	u8 addr_type;
+
+	hci_dev_lock(hdev);
+
+	/* All controllers implicitly stop advertising in the event of a
+	 * connection, so ensure that the state bit is cleared.
+	 */
+	hci_dev_clear_flag(hdev, HCI_LE_ADV);
+
+	conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
+	if (!conn) {
+		/* In case of error status and there is no connection pending
+		 * just unlock as there is nothing to cleanup.
+		 */
+		if (status)
+			goto unlock;
+
+		conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
+		if (!conn) {
+			bt_dev_err(hdev, "no memory for new connection");
+			goto unlock;
+		}
+
+		conn->dst_type = bdaddr_type;
+
+		/* If we didn't have a hci_conn object previously
+		 * but we're in central role this must be something
+		 * initiated using an accept list. Since accept list based
+		 * connections are not "first class citizens" we don't
+		 * have full tracking of them. Therefore, we go ahead
+		 * with a "best effort" approach of determining the
+		 * initiator address based on the HCI_PRIVACY flag.
+		 */
+		if (conn->out) {
+			conn->resp_addr_type = bdaddr_type;
+			bacpy(&conn->resp_addr, bdaddr);
+			if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
+				conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+				bacpy(&conn->init_addr, &hdev->rpa);
+			} else {
+				hci_copy_identity_address(hdev,
+							  &conn->init_addr,
+							  &conn->init_addr_type);
+			}
+		}
+	} else {
+		cancel_delayed_work(&conn->le_conn_timeout);
+	}
+
+	/* The HCI_LE_Connection_Complete event is only sent once per connection.
+	 * Processing it more than once per connection can corrupt kernel memory.
+	 *
+	 * As the connection handle is set here for the first time, it indicates
+	 * whether the connection is already set up.
+	 */
+	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+		bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
+		goto unlock;
+	}
+
+	le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
+
+	/* Lookup the identity address from the stored connection
+	 * address and address type.
+	 *
+	 * When establishing connections to an identity address, the
+	 * connection procedure will store the resolvable random
+	 * address first. Now if it can be converted back into the
+	 * identity address, start using the identity address from
+	 * now on.
+	 */
+	irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
+	if (irk) {
+		bacpy(&conn->dst, &irk->bdaddr);
+		conn->dst_type = irk->addr_type;
+	}
+
+	conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
+
+	if (handle > HCI_CONN_HANDLE_MAX) {
+		bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
+			   HCI_CONN_HANDLE_MAX);
+		status = HCI_ERROR_INVALID_PARAMETERS;
+	}
+
+	/* All connection failure handling is taken care of by the
+	 * hci_conn_failed function which is triggered by the HCI
+	 * request completion callbacks used for connecting.
+	 */
+	if (status)
+		goto unlock;
+
+	/* Drop the connection if it has been aborted */
+	if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
+		hci_conn_drop(conn);
+		goto unlock;
+	}
+
+	if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
+		addr_type = BDADDR_LE_PUBLIC;
+	else
+		addr_type = BDADDR_LE_RANDOM;
+
+	/* Drop the connection if the device is blocked */
+	if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
+		hci_conn_drop(conn);
+		goto unlock;
+	}
+
+	if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
+		mgmt_device_connected(hdev, conn, NULL, 0);
+
+	conn->sec_level = BT_SECURITY_LOW;
+	conn->handle = handle;
+	conn->state = BT_CONFIG;
+
+	/* Store current advertising instance as connection advertising instance
+	 * when sotfware rotation is in use so it can be re-enabled when
+	 * disconnected.
+	 */
+	if (!ext_adv_capable(hdev))
+		conn->adv_instance = hdev->cur_adv_instance;
+
+	conn->le_conn_interval = interval;
+	conn->le_conn_latency = latency;
+	conn->le_supv_timeout = supervision_timeout;
+
+	hci_debugfs_create_conn(conn);
+	hci_conn_add_sysfs(conn);
+
+	/* The remote features procedure is defined for central
+	 * role only. So only in case of an initiated connection
+	 * request the remote features.
+	 *
+	 * If the local controller supports peripheral-initiated features
+	 * exchange, then requesting the remote features in peripheral
+	 * role is possible. Otherwise just transition into the
+	 * connected state without requesting the remote features.
+	 */
+	if (conn->out ||
+	    (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
+		struct hci_cp_le_read_remote_features cp;
+
+		cp.handle = __cpu_to_le16(conn->handle);
+
+		hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
+			     sizeof(cp), &cp);
+
+		hci_conn_hold(conn);
+	} else {
+		conn->state = BT_CONNECTED;
+		hci_connect_cfm(conn, status);
+	}
+
+	params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
+					   conn->dst_type);
+	if (params) {
+		hci_pend_le_list_del_init(params);
+		if (params->conn) {
+			hci_conn_drop(params->conn);
+			hci_conn_put(params->conn);
+			params->conn = NULL;
+		}
+	}
+
+unlock:
+	hci_update_passive_scan(hdev);
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
+				     struct sk_buff *skb)
+{
+	struct hci_ev_le_conn_complete *ev = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
+			     NULL, ev->role, le16_to_cpu(ev->handle),
+			     le16_to_cpu(ev->interval),
+			     le16_to_cpu(ev->latency),
+			     le16_to_cpu(ev->supervision_timeout));
+}
+
+static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_le_enh_conn_complete *ev = data;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
+			     &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
+			     le16_to_cpu(ev->interval),
+			     le16_to_cpu(ev->latency),
+			     le16_to_cpu(ev->supervision_timeout));
+}
+
+static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
+				    struct sk_buff *skb)
+{
+	struct hci_evt_le_ext_adv_set_term *ev = data;
+	struct hci_conn *conn;
+	struct adv_info *adv, *n;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	/* The Bluetooth Core 5.3 specification clearly states that this event
+	 * shall not be sent when the Host disables the advertising set. So in
+	 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
+	 *
+	 * When the Host disables an advertising set, all cleanup is done via
+	 * its command callback and not needed to be duplicated here.
+	 */
+	if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
+		bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
+		return;
+	}
+
+	hci_dev_lock(hdev);
+
+	adv = hci_find_adv_instance(hdev, ev->handle);
+
+	if (ev->status) {
+		if (!adv)
+			goto unlock;
+
+		/* Remove advertising as it has been terminated */
+		hci_remove_adv_instance(hdev, ev->handle);
+		mgmt_advertising_removed(NULL, hdev, ev->handle);
+
+		list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
+			if (adv->enabled)
+				goto unlock;
+		}
+
+		/* We are no longer advertising, clear HCI_LE_ADV */
+		hci_dev_clear_flag(hdev, HCI_LE_ADV);
+		goto unlock;
+	}
+
+	if (adv)
+		adv->enabled = false;
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
+	if (conn) {
+		/* Store handle in the connection so the correct advertising
+		 * instance can be re-enabled when disconnected.
+		 */
+		conn->adv_instance = ev->handle;
+
+		if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
+		    bacmp(&conn->resp_addr, BDADDR_ANY))
+			goto unlock;
+
+		if (!ev->handle) {
+			bacpy(&conn->resp_addr, &hdev->random_addr);
+			goto unlock;
+		}
+
+		if (adv)
+			bacpy(&conn->resp_addr, &adv->random_addr);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_le_conn_update_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn) {
+		conn->le_conn_interval = le16_to_cpu(ev->interval);
+		conn->le_conn_latency = le16_to_cpu(ev->latency);
+		conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+/* This function requires the caller holds hdev->lock */
+static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
+					      bdaddr_t *addr,
+					      u8 addr_type, bool addr_resolved,
+					      u8 adv_type)
+{
+	struct hci_conn *conn;
+	struct hci_conn_params *params;
+
+	/* If the event is not connectable don't proceed further */
+	if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
+		return NULL;
+
+	/* Ignore if the device is blocked or hdev is suspended */
+	if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
+	    hdev->suspended)
+		return NULL;
+
+	/* Most controller will fail if we try to create new connections
+	 * while we have an existing one in peripheral role.
+	 */
+	if (hdev->conn_hash.le_num_peripheral > 0 &&
+	    (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
+	     !(hdev->le_states[3] & 0x10)))
+		return NULL;
+
+	/* If we're not connectable only connect devices that we have in
+	 * our pend_le_conns list.
+	 */
+	params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
+					   addr_type);
+	if (!params)
+		return NULL;
+
+	if (!params->explicit_connect) {
+		switch (params->auto_connect) {
+		case HCI_AUTO_CONN_DIRECT:
+			/* Only devices advertising with ADV_DIRECT_IND are
+			 * triggering a connection attempt. This is allowing
+			 * incoming connections from peripheral devices.
+			 */
+			if (adv_type != LE_ADV_DIRECT_IND)
+				return NULL;
+			break;
+		case HCI_AUTO_CONN_ALWAYS:
+			/* Devices advertising with ADV_IND or ADV_DIRECT_IND
+			 * are triggering a connection attempt. This means
+			 * that incoming connections from peripheral device are
+			 * accepted and also outgoing connections to peripheral
+			 * devices are established when found.
+			 */
+			break;
+		default:
+			return NULL;
+		}
+	}
+
+	conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
+			      BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
+			      HCI_ROLE_MASTER);
+	if (!IS_ERR(conn)) {
+		/* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
+		 * by higher layer that tried to connect, if no then
+		 * store the pointer since we don't really have any
+		 * other owner of the object besides the params that
+		 * triggered it. This way we can abort the connection if
+		 * the parameters get removed and keep the reference
+		 * count consistent once the connection is established.
+		 */
+
+		if (!params->explicit_connect)
+			params->conn = hci_conn_get(conn);
+
+		return conn;
+	}
+
+	switch (PTR_ERR(conn)) {
+	case -EBUSY:
+		/* If hci_connect() returns -EBUSY it means there is already
+		 * an LE connection attempt going on. Since controllers don't
+		 * support more than one connection attempt at the time, we
+		 * don't consider this an error case.
+		 */
+		break;
+	default:
+		BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
+		return NULL;
+	}
+
+	return NULL;
+}
+
+static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
+			       u8 bdaddr_type, bdaddr_t *direct_addr,
+			       u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
+			       bool ext_adv, bool ctl_time, u64 instant)
+{
+	struct discovery_state *d = &hdev->discovery;
+	struct smp_irk *irk;
+	struct hci_conn *conn;
+	bool match, bdaddr_resolved;
+	u32 flags;
+	u8 *ptr;
+
+	switch (type) {
+	case LE_ADV_IND:
+	case LE_ADV_DIRECT_IND:
+	case LE_ADV_SCAN_IND:
+	case LE_ADV_NONCONN_IND:
+	case LE_ADV_SCAN_RSP:
+		break;
+	default:
+		bt_dev_err_ratelimited(hdev, "unknown advertising packet "
+				       "type: 0x%02x", type);
+		return;
+	}
+
+	if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
+		bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
+		return;
+	}
+
+	/* Find the end of the data in case the report contains padded zero
+	 * bytes at the end causing an invalid length value.
+	 *
+	 * When data is NULL, len is 0 so there is no need for extra ptr
+	 * check as 'ptr < data + 0' is already false in such case.
+	 */
+	for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
+		if (ptr + 1 + *ptr > data + len)
+			break;
+	}
+
+	/* Adjust for actual length. This handles the case when remote
+	 * device is advertising with incorrect data length.
+	 */
+	len = ptr - data;
+
+	/* If the direct address is present, then this report is from
+	 * a LE Direct Advertising Report event. In that case it is
+	 * important to see if the address is matching the local
+	 * controller address.
+	 */
+	if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
+		direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
+						  &bdaddr_resolved);
+
+		/* Only resolvable random addresses are valid for these
+		 * kind of reports and others can be ignored.
+		 */
+		if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
+			return;
+
+		/* If the controller is not using resolvable random
+		 * addresses, then this report can be ignored.
+		 */
+		if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
+			return;
+
+		/* If the local IRK of the controller does not match
+		 * with the resolvable random address provided, then
+		 * this report can be ignored.
+		 */
+		if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
+			return;
+	}
+
+	/* Check if we need to convert to identity address */
+	irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
+	if (irk) {
+		bdaddr = &irk->bdaddr;
+		bdaddr_type = irk->addr_type;
+	}
+
+	bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
+
+	/* Check if we have been requested to connect to this device.
+	 *
+	 * direct_addr is set only for directed advertising reports (it is NULL
+	 * for advertising reports) and is already verified to be RPA above.
+	 */
+	conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
+				     type);
+	if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
+		/* Store report for later inclusion by
+		 * mgmt_device_connected
+		 */
+		memcpy(conn->le_adv_data, data, len);
+		conn->le_adv_data_len = len;
+	}
+
+	if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
+		flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
+	else
+		flags = 0;
+
+	/* All scan results should be sent up for Mesh systems */
+	if (hci_dev_test_flag(hdev, HCI_MESH)) {
+		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
+				  rssi, flags, data, len, NULL, 0, instant);
+		return;
+	}
+
+	/* Passive scanning shouldn't trigger any device found events,
+	 * except for devices marked as CONN_REPORT for which we do send
+	 * device found events, or advertisement monitoring requested.
+	 */
+	if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
+		if (type == LE_ADV_DIRECT_IND)
+			return;
+
+		if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
+					       bdaddr, bdaddr_type) &&
+		    idr_is_empty(&hdev->adv_monitors_idr))
+			return;
+
+		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
+				  rssi, flags, data, len, NULL, 0, 0);
+		return;
+	}
+
+	/* When receiving a scan response, then there is no way to
+	 * know if the remote device is connectable or not. However
+	 * since scan responses are merged with a previously seen
+	 * advertising report, the flags field from that report
+	 * will be used.
+	 *
+	 * In the unlikely case that a controller just sends a scan
+	 * response event that doesn't match the pending report, then
+	 * it is marked as a standalone SCAN_RSP.
+	 */
+	if (type == LE_ADV_SCAN_RSP)
+		flags = MGMT_DEV_FOUND_SCAN_RSP;
+
+	/* If there's nothing pending either store the data from this
+	 * event or send an immediate device found event if the data
+	 * should not be stored for later.
+	 */
+	if (!ext_adv &&	!has_pending_adv_report(hdev)) {
+		/* If the report will trigger a SCAN_REQ store it for
+		 * later merging.
+		 */
+		if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
+			store_pending_adv_report(hdev, bdaddr, bdaddr_type,
+						 rssi, flags, data, len);
+			return;
+		}
+
+		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
+				  rssi, flags, data, len, NULL, 0, 0);
+		return;
+	}
+
+	/* Check if the pending report is for the same device as the new one */
+	match = (!bacmp(bdaddr, &d->last_adv_addr) &&
+		 bdaddr_type == d->last_adv_addr_type);
+
+	/* If the pending data doesn't match this report or this isn't a
+	 * scan response (e.g. we got a duplicate ADV_IND) then force
+	 * sending of the pending data.
+	 */
+	if (type != LE_ADV_SCAN_RSP || !match) {
+		/* Send out whatever is in the cache, but skip duplicates */
+		if (!match)
+			mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
+					  d->last_adv_addr_type, NULL,
+					  d->last_adv_rssi, d->last_adv_flags,
+					  d->last_adv_data,
+					  d->last_adv_data_len, NULL, 0, 0);
+
+		/* If the new report will trigger a SCAN_REQ store it for
+		 * later merging.
+		 */
+		if (!ext_adv && (type == LE_ADV_IND ||
+				 type == LE_ADV_SCAN_IND)) {
+			store_pending_adv_report(hdev, bdaddr, bdaddr_type,
+						 rssi, flags, data, len);
+			return;
+		}
+
+		/* The advertising reports cannot be merged, so clear
+		 * the pending report and send out a device found event.
+		 */
+		clear_pending_adv_report(hdev);
+		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
+				  rssi, flags, data, len, NULL, 0, 0);
+		return;
+	}
+
+	/* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
+	 * the new event is a SCAN_RSP. We can therefore proceed with
+	 * sending a merged device found event.
+	 */
+	mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
+			  d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
+			  d->last_adv_data, d->last_adv_data_len, data, len, 0);
+	clear_pending_adv_report(hdev);
+}
+
+static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_le_advertising_report *ev = data;
+	u64 instant = jiffies;
+
+	if (!ev->num)
+		return;
+
+	hci_dev_lock(hdev);
+
+	while (ev->num--) {
+		struct hci_ev_le_advertising_info *info;
+		s8 rssi;
+
+		info = hci_le_ev_skb_pull(hdev, skb,
+					  HCI_EV_LE_ADVERTISING_REPORT,
+					  sizeof(*info));
+		if (!info)
+			break;
+
+		if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
+					info->length + 1))
+			break;
+
+		if (info->length <= HCI_MAX_AD_LENGTH) {
+			rssi = info->data[info->length];
+			process_adv_report(hdev, info->type, &info->bdaddr,
+					   info->bdaddr_type, NULL, 0, rssi,
+					   info->data, info->length, false,
+					   false, instant);
+		} else {
+			bt_dev_err(hdev, "Dropping invalid advertising data");
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
+{
+	if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
+		switch (evt_type) {
+		case LE_LEGACY_ADV_IND:
+			return LE_ADV_IND;
+		case LE_LEGACY_ADV_DIRECT_IND:
+			return LE_ADV_DIRECT_IND;
+		case LE_LEGACY_ADV_SCAN_IND:
+			return LE_ADV_SCAN_IND;
+		case LE_LEGACY_NONCONN_IND:
+			return LE_ADV_NONCONN_IND;
+		case LE_LEGACY_SCAN_RSP_ADV:
+		case LE_LEGACY_SCAN_RSP_ADV_SCAN:
+			return LE_ADV_SCAN_RSP;
+		}
+
+		goto invalid;
+	}
+
+	if (evt_type & LE_EXT_ADV_CONN_IND) {
+		if (evt_type & LE_EXT_ADV_DIRECT_IND)
+			return LE_ADV_DIRECT_IND;
+
+		return LE_ADV_IND;
+	}
+
+	if (evt_type & LE_EXT_ADV_SCAN_RSP)
+		return LE_ADV_SCAN_RSP;
+
+	if (evt_type & LE_EXT_ADV_SCAN_IND)
+		return LE_ADV_SCAN_IND;
+
+	if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
+	    evt_type & LE_EXT_ADV_DIRECT_IND)
+		return LE_ADV_NONCONN_IND;
+
+invalid:
+	bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
+			       evt_type);
+
+	return LE_ADV_INVALID;
+}
+
+static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_le_ext_adv_report *ev = data;
+	u64 instant = jiffies;
+
+	if (!ev->num)
+		return;
+
+	hci_dev_lock(hdev);
+
+	while (ev->num--) {
+		struct hci_ev_le_ext_adv_info *info;
+		u8 legacy_evt_type;
+		u16 evt_type;
+
+		info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
+					  sizeof(*info));
+		if (!info)
+			break;
+
+		if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
+					info->length))
+			break;
+
+		evt_type = __le16_to_cpu(info->type);
+		legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
+		if (legacy_evt_type != LE_ADV_INVALID) {
+			process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
+					   info->bdaddr_type, NULL, 0,
+					   info->rssi, info->data, info->length,
+					   !(evt_type & LE_EXT_ADV_LEGACY_PDU),
+					   false, instant);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
+{
+	struct hci_cp_le_pa_term_sync cp;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.handle = handle;
+
+	return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
+}
+
+static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_le_pa_sync_established *ev = data;
+	int mask = hdev->link_mode;
+	__u8 flags = 0;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	hci_dev_clear_flag(hdev, HCI_PA_SYNC);
+
+	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
+	if (!(mask & HCI_LM_ACCEPT))
+		hci_le_pa_term_sync(hdev, ev->handle);
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_ev_le_remote_feat_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn) {
+		if (!ev->status)
+			memcpy(conn->features[0], ev->features, 8);
+
+		if (conn->state == BT_CONFIG) {
+			__u8 status;
+
+			/* If the local controller supports peripheral-initiated
+			 * features exchange, but the remote controller does
+			 * not, then it is possible that the error code 0x1a
+			 * for unsupported remote feature gets returned.
+			 *
+			 * In this specific case, allow the connection to
+			 * transition into connected state and mark it as
+			 * successful.
+			 */
+			if (!conn->out && ev->status == 0x1a &&
+			    (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
+				status = 0x00;
+			else
+				status = ev->status;
+
+			conn->state = BT_CONNECTED;
+			hci_connect_cfm(conn, status);
+			hci_conn_drop(conn);
+		}
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
+				   struct sk_buff *skb)
+{
+	struct hci_ev_le_ltk_req *ev = data;
+	struct hci_cp_le_ltk_reply cp;
+	struct hci_cp_le_ltk_neg_reply neg;
+	struct hci_conn *conn;
+	struct smp_ltk *ltk;
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (conn == NULL)
+		goto not_found;
+
+	ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
+	if (!ltk)
+		goto not_found;
+
+	if (smp_ltk_is_sc(ltk)) {
+		/* With SC both EDiv and Rand are set to zero */
+		if (ev->ediv || ev->rand)
+			goto not_found;
+	} else {
+		/* For non-SC keys check that EDiv and Rand match */
+		if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
+			goto not_found;
+	}
+
+	memcpy(cp.ltk, ltk->val, ltk->enc_size);
+	memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
+	cp.handle = cpu_to_le16(conn->handle);
+
+	conn->pending_sec_level = smp_ltk_sec_level(ltk);
+
+	conn->enc_key_size = ltk->enc_size;
+
+	hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
+
+	/* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
+	 * temporary key used to encrypt a connection following
+	 * pairing. It is used during the Encrypted Session Setup to
+	 * distribute the keys. Later, security can be re-established
+	 * using a distributed LTK.
+	 */
+	if (ltk->type == SMP_STK) {
+		set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
+		list_del_rcu(&ltk->list);
+		kfree_rcu(ltk, rcu);
+	} else {
+		clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
+	}
+
+	hci_dev_unlock(hdev);
+
+	return;
+
+not_found:
+	neg.handle = ev->handle;
+	hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
+	hci_dev_unlock(hdev);
+}
+
+static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
+				      u8 reason)
+{
+	struct hci_cp_le_conn_param_req_neg_reply cp;
+
+	cp.handle = cpu_to_le16(handle);
+	cp.reason = reason;
+
+	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
+		     &cp);
+}
+
+static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
+					     struct sk_buff *skb)
+{
+	struct hci_ev_le_remote_conn_param_req *ev = data;
+	struct hci_cp_le_conn_param_req_reply cp;
+	struct hci_conn *hcon;
+	u16 handle, min, max, latency, timeout;
+
+	bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
+
+	handle = le16_to_cpu(ev->handle);
+	min = le16_to_cpu(ev->interval_min);
+	max = le16_to_cpu(ev->interval_max);
+	latency = le16_to_cpu(ev->latency);
+	timeout = le16_to_cpu(ev->timeout);
+
+	hcon = hci_conn_hash_lookup_handle(hdev, handle);
+	if (!hcon || hcon->state != BT_CONNECTED)
+		return send_conn_param_neg_reply(hdev, handle,
+						 HCI_ERROR_UNKNOWN_CONN_ID);
+
+	if (hci_check_conn_params(min, max, latency, timeout))
+		return send_conn_param_neg_reply(hdev, handle,
+						 HCI_ERROR_INVALID_LL_PARAMS);
+
+	if (hcon->role == HCI_ROLE_MASTER) {
+		struct hci_conn_params *params;
+		u8 store_hint;
+
+		hci_dev_lock(hdev);
+
+		params = hci_conn_params_lookup(hdev, &hcon->dst,
+						hcon->dst_type);
+		if (params) {
+			params->conn_min_interval = min;
+			params->conn_max_interval = max;
+			params->conn_latency = latency;
+			params->supervision_timeout = timeout;
+			store_hint = 0x01;
+		} else {
+			store_hint = 0x00;
+		}
+
+		hci_dev_unlock(hdev);
+
+		mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
+				    store_hint, min, max, latency, timeout);
+	}
+
+	cp.handle = ev->handle;
+	cp.interval_min = ev->interval_min;
+	cp.interval_max = ev->interval_max;
+	cp.latency = ev->latency;
+	cp.timeout = ev->timeout;
+	cp.min_ce_len = 0;
+	cp.max_ce_len = 0;
+
+	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
+}
+
+static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
+					 struct sk_buff *skb)
+{
+	struct hci_ev_le_direct_adv_report *ev = data;
+	u64 instant = jiffies;
+	int i;
+
+	if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
+				flex_array_size(ev, info, ev->num)))
+		return;
+
+	if (!ev->num)
+		return;
+
+	hci_dev_lock(hdev);
+
+	for (i = 0; i < ev->num; i++) {
+		struct hci_ev_le_direct_adv_info *info = &ev->info[i];
+
+		process_adv_report(hdev, info->type, &info->bdaddr,
+				   info->bdaddr_type, &info->direct_addr,
+				   info->direct_addr_type, info->rssi, NULL, 0,
+				   false, false, instant);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_le_phy_update_complete *ev = data;
+	struct hci_conn *conn;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+	if (!conn)
+		goto unlock;
+
+	conn->le_tx_phy = ev->tx_phy;
+	conn->le_rx_phy = ev->rx_phy;
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
+					struct sk_buff *skb)
+{
+	struct hci_evt_le_cis_established *ev = data;
+	struct hci_conn *conn;
+	u16 handle = __le16_to_cpu(ev->handle);
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_handle(hdev, handle);
+	if (!conn) {
+		bt_dev_err(hdev,
+			   "Unable to find connection with handle 0x%4.4x",
+			   handle);
+		goto unlock;
+	}
+
+	if (conn->type != ISO_LINK) {
+		bt_dev_err(hdev,
+			   "Invalid connection link type handle 0x%4.4x",
+			   handle);
+		goto unlock;
+	}
+
+	if (conn->role == HCI_ROLE_SLAVE) {
+		__le32 interval;
+
+		memset(&interval, 0, sizeof(interval));
+
+		memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
+		conn->iso_qos.in.interval = le32_to_cpu(interval);
+		memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
+		conn->iso_qos.out.interval = le32_to_cpu(interval);
+		conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
+		conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
+		conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
+		conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
+		conn->iso_qos.in.phy = ev->c_phy;
+		conn->iso_qos.out.phy = ev->p_phy;
+	}
+
+	if (!ev->status) {
+		conn->state = BT_CONNECTED;
+		hci_debugfs_create_conn(conn);
+		hci_conn_add_sysfs(conn);
+		hci_iso_setup_path(conn);
+		goto unlock;
+	}
+
+	hci_connect_cfm(conn, ev->status);
+	hci_conn_del(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
+{
+	struct hci_cp_le_reject_cis cp;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.handle = handle;
+	cp.reason = HCI_ERROR_REJ_BAD_ADDR;
+	hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
+}
+
+static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
+{
+	struct hci_cp_le_accept_cis cp;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.handle = handle;
+	hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
+}
+
+static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
+			       struct sk_buff *skb)
+{
+	struct hci_evt_le_cis_req *ev = data;
+	u16 acl_handle, cis_handle;
+	struct hci_conn *acl, *cis;
+	int mask;
+	__u8 flags = 0;
+
+	acl_handle = __le16_to_cpu(ev->acl_handle);
+	cis_handle = __le16_to_cpu(ev->cis_handle);
+
+	bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
+		   acl_handle, cis_handle, ev->cig_id, ev->cis_id);
+
+	hci_dev_lock(hdev);
+
+	acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
+	if (!acl)
+		goto unlock;
+
+	mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
+	if (!(mask & HCI_LM_ACCEPT)) {
+		hci_le_reject_cis(hdev, ev->cis_handle);
+		goto unlock;
+	}
+
+	cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
+	if (!cis) {
+		cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
+		if (!cis) {
+			hci_le_reject_cis(hdev, ev->cis_handle);
+			goto unlock;
+		}
+		cis->handle = cis_handle;
+	}
+
+	cis->iso_qos.cig = ev->cig_id;
+	cis->iso_qos.cis = ev->cis_id;
+
+	if (!(flags & HCI_PROTO_DEFER)) {
+		hci_le_accept_cis(hdev, ev->cis_handle);
+	} else {
+		cis->state = BT_CONNECT2;
+		hci_connect_cfm(cis, 0);
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
+					   struct sk_buff *skb)
+{
+	struct hci_evt_le_create_big_complete *ev = data;
+	struct hci_conn *conn;
+
+	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
+
+	if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
+				flex_array_size(ev, bis_handle, ev->num_bis)))
+		return;
+
+	hci_dev_lock(hdev);
+
+	conn = hci_conn_hash_lookup_big(hdev, ev->handle);
+	if (!conn)
+		goto unlock;
+
+	if (conn->type != ISO_LINK) {
+		bt_dev_err(hdev,
+			   "Invalid connection link type handle 0x%2.2x",
+			   ev->handle);
+		goto unlock;
+	}
+
+	if (ev->num_bis)
+		conn->handle = __le16_to_cpu(ev->bis_handle[0]);
+
+	if (!ev->status) {
+		conn->state = BT_CONNECTED;
+		hci_debugfs_create_conn(conn);
+		hci_conn_add_sysfs(conn);
+		hci_iso_setup_path(conn);
+		goto unlock;
+	}
+
+	hci_connect_cfm(conn, ev->status);
+	hci_conn_del(conn);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
+					    struct sk_buff *skb)
+{
+	struct hci_evt_le_big_sync_estabilished *ev = data;
+	struct hci_conn *bis;
+	int i;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
+
+	if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
+				flex_array_size(ev, bis, ev->num_bis)))
+		return;
+
+	if (ev->status)
+		return;
+
+	hci_dev_lock(hdev);
+
+	for (i = 0; i < ev->num_bis; i++) {
+		u16 handle = le16_to_cpu(ev->bis[i]);
+		__le32 interval;
+
+		bis = hci_conn_hash_lookup_handle(hdev, handle);
+		if (!bis) {
+			bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
+					   HCI_ROLE_SLAVE);
+			if (!bis)
+				continue;
+			bis->handle = handle;
+		}
+
+		bis->iso_qos.big = ev->handle;
+		memset(&interval, 0, sizeof(interval));
+		memcpy(&interval, ev->latency, sizeof(ev->latency));
+		bis->iso_qos.in.interval = le32_to_cpu(interval);
+		/* Convert ISO Interval (1.25 ms slots) to latency (ms) */
+		bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
+		bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
+
+		hci_iso_setup_path(bis);
+	}
+
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
+					   struct sk_buff *skb)
+{
+	struct hci_evt_le_big_info_adv_report *ev = data;
+	int mask = hdev->link_mode;
+	__u8 flags = 0;
+
+	bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
+
+	hci_dev_lock(hdev);
+
+	mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
+	if (!(mask & HCI_LM_ACCEPT))
+		hci_le_pa_term_sync(hdev, ev->sync_handle);
+
+	hci_dev_unlock(hdev);
+}
+
+#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
+[_op] = { \
+	.func = _func, \
+	.min_len = _min_len, \
+	.max_len = _max_len, \
+}
+
+#define HCI_LE_EV(_op, _func, _len) \
+	HCI_LE_EV_VL(_op, _func, _len, _len)
+
+#define HCI_LE_EV_STATUS(_op, _func) \
+	HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
+
+/* Entries in this table shall have their position according to the subevent
+ * opcode they handle so the use of the macros above is recommend since it does
+ * attempt to initialize at its proper index using Designated Initializers that
+ * way events without a callback function can be ommited.
+ */
+static const struct hci_le_ev {
+	void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
+	u16  min_len;
+	u16  max_len;
+} hci_le_ev_table[U8_MAX + 1] = {
+	/* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
+	HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
+		  sizeof(struct hci_ev_le_conn_complete)),
+	/* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
+	HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
+		     sizeof(struct hci_ev_le_advertising_report),
+		     HCI_MAX_EVENT_SIZE),
+	/* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
+	HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
+		  hci_le_conn_update_complete_evt,
+		  sizeof(struct hci_ev_le_conn_update_complete)),
+	/* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
+	HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
+		  hci_le_remote_feat_complete_evt,
+		  sizeof(struct hci_ev_le_remote_feat_complete)),
+	/* [0x05 = HCI_EV_LE_LTK_REQ] */
+	HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
+		  sizeof(struct hci_ev_le_ltk_req)),
+	/* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
+	HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
+		  hci_le_remote_conn_param_req_evt,
+		  sizeof(struct hci_ev_le_remote_conn_param_req)),
+	/* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
+	HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
+		  hci_le_enh_conn_complete_evt,
+		  sizeof(struct hci_ev_le_enh_conn_complete)),
+	/* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
+	HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
+		     sizeof(struct hci_ev_le_direct_adv_report),
+		     HCI_MAX_EVENT_SIZE),
+	/* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
+	HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
+		  sizeof(struct hci_ev_le_phy_update_complete)),
+	/* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
+	HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
+		     sizeof(struct hci_ev_le_ext_adv_report),
+		     HCI_MAX_EVENT_SIZE),
+	/* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
+	HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
+		  hci_le_pa_sync_estabilished_evt,
+		  sizeof(struct hci_ev_le_pa_sync_established)),
+	/* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
+	HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
+		  sizeof(struct hci_evt_le_ext_adv_set_term)),
+	/* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
+	HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
+		  sizeof(struct hci_evt_le_cis_established)),
+	/* [0x1a = HCI_EVT_LE_CIS_REQ] */
+	HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
+		  sizeof(struct hci_evt_le_cis_req)),
+	/* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
+	HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
+		     hci_le_create_big_complete_evt,
+		     sizeof(struct hci_evt_le_create_big_complete),
+		     HCI_MAX_EVENT_SIZE),
+	/* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
+	HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
+		     hci_le_big_sync_established_evt,
+		     sizeof(struct hci_evt_le_big_sync_estabilished),
+		     HCI_MAX_EVENT_SIZE),
+	/* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
+	HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
+		     hci_le_big_info_adv_report_evt,
+		     sizeof(struct hci_evt_le_big_info_adv_report),
+		     HCI_MAX_EVENT_SIZE),
+};
+
+static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
+			    struct sk_buff *skb, u16 *opcode, u8 *status,
+			    hci_req_complete_t *req_complete,
+			    hci_req_complete_skb_t *req_complete_skb)
+{
+	struct hci_ev_le_meta *ev = data;
+	const struct hci_le_ev *subev;
+
+	bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
+
+	/* Only match event if command OGF is for LE */
+	if (hdev->sent_cmd &&
+	    hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
+	    hci_skb_event(hdev->sent_cmd) == ev->subevent) {
+		*opcode = hci_skb_opcode(hdev->sent_cmd);
+		hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
+				     req_complete_skb);
+	}
+
+	subev = &hci_le_ev_table[ev->subevent];
+	if (!subev->func)
+		return;
+
+	if (skb->len < subev->min_len) {
+		bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
+			   ev->subevent, skb->len, subev->min_len);
+		return;
+	}
+
+	/* Just warn if the length is over max_len size it still be
+	 * possible to partially parse the event so leave to callback to
+	 * decide if that is acceptable.
+	 */
+	if (skb->len > subev->max_len)
+		bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
+			    ev->subevent, skb->len, subev->max_len);
+	data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
+	if (!data)
+		return;
+
+	subev->func(hdev, data, skb);
+}
+
+static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
+				 u8 event, struct sk_buff *skb)
+{
+	struct hci_ev_cmd_complete *ev;
+	struct hci_event_hdr *hdr;
+
+	if (!skb)
+		return false;
+
+	hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
+	if (!hdr)
+		return false;
+
+	if (event) {
+		if (hdr->evt != event)
+			return false;
+		return true;
+	}
+
+	/* Check if request ended in Command Status - no way to retrieve
+	 * any extra parameters in this case.
+	 */
+	if (hdr->evt == HCI_EV_CMD_STATUS)
+		return false;
+
+	if (hdr->evt != HCI_EV_CMD_COMPLETE) {
+		bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
+			   hdr->evt);
+		return false;
+	}
+
+	ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
+	if (!ev)
+		return false;
+
+	if (opcode != __le16_to_cpu(ev->opcode)) {
+		BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
+		       __le16_to_cpu(ev->opcode));
+		return false;
+	}
+
+	return true;
+}
+
+static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
+				  struct sk_buff *skb)
+{
+	struct hci_ev_le_advertising_info *adv;
+	struct hci_ev_le_direct_adv_info *direct_adv;
+	struct hci_ev_le_ext_adv_info *ext_adv;
+	const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
+	const struct hci_ev_conn_request *conn_request = (void *)skb->data;
+
+	hci_dev_lock(hdev);
+
+	/* If we are currently suspended and this is the first BT event seen,
+	 * save the wake reason associated with the event.
+	 */
+	if (!hdev->suspended || hdev->wake_reason)
+		goto unlock;
+
+	/* Default to remote wake. Values for wake_reason are documented in the
+	 * Bluez mgmt api docs.
+	 */
+	hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
+
+	/* Once configured for remote wakeup, we should only wake up for
+	 * reconnections. It's useful to see which device is waking us up so
+	 * keep track of the bdaddr of the connection event that woke us up.
+	 */
+	if (event == HCI_EV_CONN_REQUEST) {
+		bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
+		hdev->wake_addr_type = BDADDR_BREDR;
+	} else if (event == HCI_EV_CONN_COMPLETE) {
+		bacpy(&hdev->wake_addr, &conn_request->bdaddr);
+		hdev->wake_addr_type = BDADDR_BREDR;
+	} else if (event == HCI_EV_LE_META) {
+		struct hci_ev_le_meta *le_ev = (void *)skb->data;
+		u8 subevent = le_ev->subevent;
+		u8 *ptr = &skb->data[sizeof(*le_ev)];
+		u8 num_reports = *ptr;
+
+		if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
+		     subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
+		     subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
+		    num_reports) {
+			adv = (void *)(ptr + 1);
+			direct_adv = (void *)(ptr + 1);
+			ext_adv = (void *)(ptr + 1);
+
+			switch (subevent) {
+			case HCI_EV_LE_ADVERTISING_REPORT:
+				bacpy(&hdev->wake_addr, &adv->bdaddr);
+				hdev->wake_addr_type = adv->bdaddr_type;
+				break;
+			case HCI_EV_LE_DIRECT_ADV_REPORT:
+				bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
+				hdev->wake_addr_type = direct_adv->bdaddr_type;
+				break;
+			case HCI_EV_LE_EXT_ADV_REPORT:
+				bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
+				hdev->wake_addr_type = ext_adv->bdaddr_type;
+				break;
+			}
+		}
+	} else {
+		hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
+	}
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+#define HCI_EV_VL(_op, _func, _min_len, _max_len) \
+[_op] = { \
+	.req = false, \
+	.func = _func, \
+	.min_len = _min_len, \
+	.max_len = _max_len, \
+}
+
+#define HCI_EV(_op, _func, _len) \
+	HCI_EV_VL(_op, _func, _len, _len)
+
+#define HCI_EV_STATUS(_op, _func) \
+	HCI_EV(_op, _func, sizeof(struct hci_ev_status))
+
+#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
+[_op] = { \
+	.req = true, \
+	.func_req = _func, \
+	.min_len = _min_len, \
+	.max_len = _max_len, \
+}
+
+#define HCI_EV_REQ(_op, _func, _len) \
+	HCI_EV_REQ_VL(_op, _func, _len, _len)
+
+/* Entries in this table shall have their position according to the event opcode
+ * they handle so the use of the macros above is recommend since it does attempt
+ * to initialize at its proper index using Designated Initializers that way
+ * events without a callback function don't have entered.
+ */
+static const struct hci_ev {
+	bool req;
+	union {
+		void (*func)(struct hci_dev *hdev, void *data,
+			     struct sk_buff *skb);
+		void (*func_req)(struct hci_dev *hdev, void *data,
+				 struct sk_buff *skb, u16 *opcode, u8 *status,
+				 hci_req_complete_t *req_complete,
+				 hci_req_complete_skb_t *req_complete_skb);
+	};
+	u16  min_len;
+	u16  max_len;
+} hci_ev_table[U8_MAX + 1] = {
+	/* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
+	HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
+	/* [0x02 = HCI_EV_INQUIRY_RESULT] */
+	HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
+		  sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
+	/* [0x03 = HCI_EV_CONN_COMPLETE] */
+	HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
+	       sizeof(struct hci_ev_conn_complete)),
+	/* [0x04 = HCI_EV_CONN_REQUEST] */
+	HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
+	       sizeof(struct hci_ev_conn_request)),
+	/* [0x05 = HCI_EV_DISCONN_COMPLETE] */
+	HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
+	       sizeof(struct hci_ev_disconn_complete)),
+	/* [0x06 = HCI_EV_AUTH_COMPLETE] */
+	HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
+	       sizeof(struct hci_ev_auth_complete)),
+	/* [0x07 = HCI_EV_REMOTE_NAME] */
+	HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
+	       sizeof(struct hci_ev_remote_name)),
+	/* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
+	HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
+	       sizeof(struct hci_ev_encrypt_change)),
+	/* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
+	HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
+	       hci_change_link_key_complete_evt,
+	       sizeof(struct hci_ev_change_link_key_complete)),
+	/* [0x0b = HCI_EV_REMOTE_FEATURES] */
+	HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
+	       sizeof(struct hci_ev_remote_features)),
+	/* [0x0e = HCI_EV_CMD_COMPLETE] */
+	HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
+		      sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
+	/* [0x0f = HCI_EV_CMD_STATUS] */
+	HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
+		   sizeof(struct hci_ev_cmd_status)),
+	/* [0x10 = HCI_EV_CMD_STATUS] */
+	HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
+	       sizeof(struct hci_ev_hardware_error)),
+	/* [0x12 = HCI_EV_ROLE_CHANGE] */
+	HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
+	       sizeof(struct hci_ev_role_change)),
+	/* [0x13 = HCI_EV_NUM_COMP_PKTS] */
+	HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
+		  sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
+	/* [0x14 = HCI_EV_MODE_CHANGE] */
+	HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
+	       sizeof(struct hci_ev_mode_change)),
+	/* [0x16 = HCI_EV_PIN_CODE_REQ] */
+	HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
+	       sizeof(struct hci_ev_pin_code_req)),
+	/* [0x17 = HCI_EV_LINK_KEY_REQ] */
+	HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
+	       sizeof(struct hci_ev_link_key_req)),
+	/* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
+	HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
+	       sizeof(struct hci_ev_link_key_notify)),
+	/* [0x1c = HCI_EV_CLOCK_OFFSET] */
+	HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
+	       sizeof(struct hci_ev_clock_offset)),
+	/* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
+	HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
+	       sizeof(struct hci_ev_pkt_type_change)),
+	/* [0x20 = HCI_EV_PSCAN_REP_MODE] */
+	HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
+	       sizeof(struct hci_ev_pscan_rep_mode)),
+	/* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
+	HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
+		  hci_inquiry_result_with_rssi_evt,
+		  sizeof(struct hci_ev_inquiry_result_rssi),
+		  HCI_MAX_EVENT_SIZE),
+	/* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
+	HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
+	       sizeof(struct hci_ev_remote_ext_features)),
+	/* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
+	HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
+	       sizeof(struct hci_ev_sync_conn_complete)),
+	/* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
+	HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
+		  hci_extended_inquiry_result_evt,
+		  sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
+	/* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
+	HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
+	       sizeof(struct hci_ev_key_refresh_complete)),
+	/* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
+	HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
+	       sizeof(struct hci_ev_io_capa_request)),
+	/* [0x32 = HCI_EV_IO_CAPA_REPLY] */
+	HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
+	       sizeof(struct hci_ev_io_capa_reply)),
+	/* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
+	HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
+	       sizeof(struct hci_ev_user_confirm_req)),
+	/* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
+	HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
+	       sizeof(struct hci_ev_user_passkey_req)),
+	/* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
+	HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
+	       sizeof(struct hci_ev_remote_oob_data_request)),
+	/* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
+	HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
+	       sizeof(struct hci_ev_simple_pair_complete)),
+	/* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
+	HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
+	       sizeof(struct hci_ev_user_passkey_notify)),
+	/* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
+	HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
+	       sizeof(struct hci_ev_keypress_notify)),
+	/* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
+	HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
+	       sizeof(struct hci_ev_remote_host_features)),
+	/* [0x3e = HCI_EV_LE_META] */
+	HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
+		      sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
+#if IS_ENABLED(CONFIG_BT_HS)
+	/* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
+	HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
+	       sizeof(struct hci_ev_phy_link_complete)),
+	/* [0x41 = HCI_EV_CHANNEL_SELECTED] */
+	HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
+	       sizeof(struct hci_ev_channel_selected)),
+	/* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
+	HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
+	       hci_disconn_loglink_complete_evt,
+	       sizeof(struct hci_ev_disconn_logical_link_complete)),
+	/* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
+	HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
+	       sizeof(struct hci_ev_logical_link_complete)),
+	/* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
+	HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
+	       hci_disconn_phylink_complete_evt,
+	       sizeof(struct hci_ev_disconn_phy_link_complete)),
+#endif
+	/* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
+	HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
+	       sizeof(struct hci_ev_num_comp_blocks)),
+	/* [0xff = HCI_EV_VENDOR] */
+	HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
+};
+
+static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
+			   u16 *opcode, u8 *status,
+			   hci_req_complete_t *req_complete,
+			   hci_req_complete_skb_t *req_complete_skb)
+{
+	const struct hci_ev *ev = &hci_ev_table[event];
+	void *data;
+
+	if (!ev->func)
+		return;
+
+	if (skb->len < ev->min_len) {
+		bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
+			   event, skb->len, ev->min_len);
+		return;
+	}
+
+	/* Just warn if the length is over max_len size it still be
+	 * possible to partially parse the event so leave to callback to
+	 * decide if that is acceptable.
+	 */
+	if (skb->len > ev->max_len)
+		bt_dev_warn_ratelimited(hdev,
+					"unexpected event 0x%2.2x length: %u > %u",
+					event, skb->len, ev->max_len);
+
+	data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
+	if (!data)
+		return;
+
+	if (ev->req)
+		ev->func_req(hdev, data, skb, opcode, status, req_complete,
+			     req_complete_skb);
+	else
+		ev->func(hdev, data, skb);
+}
+
+void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
+{
+	struct hci_event_hdr *hdr = (void *) skb->data;
+	hci_req_complete_t req_complete = NULL;
+	hci_req_complete_skb_t req_complete_skb = NULL;
+	struct sk_buff *orig_skb = NULL;
+	u8 status = 0, event, req_evt = 0;
+	u16 opcode = HCI_OP_NOP;
+
+	if (skb->len < sizeof(*hdr)) {
+		bt_dev_err(hdev, "Malformed HCI Event");
+		goto done;
+	}
+
+	kfree_skb(hdev->recv_event);
+	hdev->recv_event = skb_clone(skb, GFP_KERNEL);
+
+	event = hdr->evt;
+	if (!event) {
+		bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
+			    event);
+		goto done;
+	}
+
+	/* Only match event if command OGF is not for LE */
+	if (hdev->sent_cmd &&
+	    hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
+	    hci_skb_event(hdev->sent_cmd) == event) {
+		hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
+				     status, &req_complete, &req_complete_skb);
+		req_evt = event;
+	}
+
+	/* If it looks like we might end up having to call
+	 * req_complete_skb, store a pristine copy of the skb since the
+	 * various handlers may modify the original one through
+	 * skb_pull() calls, etc.
+	 */
+	if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
+	    event == HCI_EV_CMD_COMPLETE)
+		orig_skb = skb_clone(skb, GFP_KERNEL);
+
+	skb_pull(skb, HCI_EVENT_HDR_SIZE);
+
+	/* Store wake reason if we're suspended */
+	hci_store_wake_reason(hdev, event, skb);
+
+	bt_dev_dbg(hdev, "event 0x%2.2x", event);
+
+	hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
+		       &req_complete_skb);
+
+	if (req_complete) {
+		req_complete(hdev, status, opcode);
+	} else if (req_complete_skb) {
+		if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
+			kfree_skb(orig_skb);
+			orig_skb = NULL;
+		}
+		req_complete_skb(hdev, status, opcode, orig_skb);
+	}
+
+done:
+	kfree_skb(orig_skb);
+	kfree_skb(skb);
+	hdev->stat.evt_rx++;
+}