Bluetooth: Implement support for Mesh

The patch adds state bits, storage and HCI command chains for sending
and receiving Bluetooth Mesh advertising packets, and delivery to
requesting user space processes. It specifically creates 4 new MGMT
commands and 2 new MGMT events:

MGMT_OP_SET_MESH_RECEIVER - Sets passive scan parameters and a list of
AD Types which will trigger Mesh Packet Received events

MGMT_OP_MESH_READ_FEATURES - Returns information on how many outbound
Mesh packets can be simultaneously queued, and what the currently queued
handles are.

MGMT_OP_MESH_SEND - Command to queue a specific outbound Mesh packet,
with the number of times it should be sent, and the BD Addr to use.
Discrete advertisments are added to the ADV Instance list.

MGMT_OP_MESH_SEND_CANCEL - Command to cancel a prior outbound message
request.

MGMT_EV_MESH_DEVICE_FOUND - Event to deliver entire received Mesh
Advertisement packet, along with timing information.

MGMT_EV_MESH_PACKET_CMPLT - Event to indicate that an outbound packet is
no longer queued for delivery.

Signed-off-by: Brian Gix <[e-mail]>
Signed-off-by: Luiz Augusto von Dentz <[e-mail]>

include/net/bluetooth/bluetooth.h

···
 
 int mgmt_init(void);
 void mgmt_exit(void);
+void mgmt_cleanup(struct sock *sk);
 
 void bt_sock_reclassify_lock(struct sock *sk, int proto);
 

include/net/bluetooth/hci.h

···
 	HCI_LE_SIMULTANEOUS_ROLES,
 	HCI_CMD_DRAIN_WORKQUEUE,
 
+	HCI_MESH,
+	HCI_MESH_SENDING,
+
 	__HCI_NUM_FLAGS,
 };
 

include/net/bluetooth/hci_core.h

···
 	bool	enabled;
 	bool	pending;
 	bool	periodic;
+	__u8	mesh;
 	__u8	instance;
 	__u32	flags;
 	__u16	timeout;
···
 	__u8		le_resolv_list_size;
 	__u8		le_num_of_adv_sets;
 	__u8		le_states[8];
+	__u8		mesh_ad_types[16];
+	__u8		mesh_send_ref;
 	__u8		commands[64];
 	__u8		hci_ver;
 	__u16		hci_rev;
···
 	struct list_head	cmd_sync_work_list;
 	struct mutex		cmd_sync_work_lock;
 	struct work_struct	cmd_sync_cancel_work;
+	struct work_struct	reenable_adv_work;
 
 	__u16			discov_timeout;
 	struct delayed_work	discov_off;
···
 
 	struct hci_conn_hash	conn_hash;
 
+	struct list_head	mesh_pending;
 	struct list_head	mgmt_pending;
 	struct list_head	reject_list;
 	struct list_head	accept_list;
···
 	__u32			rpa_timeout;
 	struct delayed_work	rpa_expired;
 	bdaddr_t		rpa;
+
+	struct delayed_work	mesh_send_done;
 
 	enum {
 		INTERLEAVE_SCAN_NONE,
···
 				      u32 flags, u16 adv_data_len, u8 *adv_data,
 				      u16 scan_rsp_len, u8 *scan_rsp_data,
 				      u16 timeout, u16 duration, s8 tx_power,
-				      u32 min_interval, u32 max_interval);
+				      u32 min_interval, u32 max_interval,
+				      u8 mesh_handle);
 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
 				      u32 flags, u8 data_len, u8 *data,
 				      u32 min_interval, u32 max_interval);
···
 #define DISCOV_LE_FAST_ADV_INT_MAX	0x00F0	/* 150 msec */
 #define DISCOV_LE_PER_ADV_INT_MIN	0x00A0	/* 200 msec */
 #define DISCOV_LE_PER_ADV_INT_MAX	0x00A0	/* 200 msec */
+#define DISCOV_LE_ADV_MESH_MIN		0x00A0  /* 100 msec */
+#define DISCOV_LE_ADV_MESH_MAX		0x00A0  /* 100 msec */
+#define INTERVAL_TO_MS(x)		(((x) * 10) / 0x10)
 
 #define NAME_RESOLVE_DURATION		msecs_to_jiffies(10240)	/* 10.24 sec */
 
···
 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 		       u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
-		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
+		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
+		       u64 instant);
 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 		      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);

include/net/bluetooth/mgmt.h

···
 	struct mgmt_adv_pattern patterns[];
 } __packed;
 #define MGMT_ADD_ADV_PATTERNS_MONITOR_RSSI_SIZE	8
+#define MGMT_OP_SET_MESH_RECEIVER		0x0057
+struct mgmt_cp_set_mesh {
+	__u8   enable;
+	__le16 window;
+	__le16 period;
+	__u8   num_ad_types;
+	__u8   ad_types[];
+} __packed;
+#define MGMT_SET_MESH_RECEIVER_SIZE	6
+
+#define MGMT_OP_MESH_READ_FEATURES	0x0058
+#define MGMT_MESH_READ_FEATURES_SIZE	0
+#define MESH_HANDLES_MAX	3
+struct mgmt_rp_mesh_read_features {
+	__le16	index;
+	__u8   max_handles;
+	__u8   used_handles;
+	__u8   handles[MESH_HANDLES_MAX];
+} __packed;
+
+#define MGMT_OP_MESH_SEND		0x0059
+struct mgmt_cp_mesh_send {
+	struct mgmt_addr_info addr;
+	__le64  instant;
+	__le16  delay;
+	__u8   cnt;
+	__u8   adv_data_len;
+	__u8   adv_data[];
+} __packed;
+#define MGMT_MESH_SEND_SIZE		19
+
+#define MGMT_OP_MESH_SEND_CANCEL	0x005A
+struct mgmt_cp_mesh_send_cancel {
+	__u8  handle;
+} __packed;
+#define MGMT_MESH_SEND_CANCEL_SIZE	1
 
 #define MGMT_EV_CMD_COMPLETE		0x0001
 struct mgmt_ev_cmd_complete {
···
 struct mgmt_ev_adv_monitor_device_lost {
 	__le16 monitor_handle;
 	struct mgmt_addr_info addr;
+} __packed;
+
+#define MGMT_EV_MESH_DEVICE_FOUND	0x0031
+struct mgmt_ev_mesh_device_found {
+	struct mgmt_addr_info addr;
+	__s8	rssi;
+	__le64	instant;
+	__le32	flags;
+	__le16	eir_len;
+	__u8	eir[];
+} __packed;
+
+
+#define MGMT_EV_MESH_PACKET_CMPLT		0x0032
+struct mgmt_ev_mesh_pkt_cmplt {
+	__u8	handle;
 } __packed;

net/bluetooth/hci_core.c

···
 				      u32 flags, u16 adv_data_len, u8 *adv_data,
 				      u16 scan_rsp_len, u8 *scan_rsp_data,
 				      u16 timeout, u16 duration, s8 tx_power,
-				      u32 min_interval, u32 max_interval)
+				      u32 min_interval, u32 max_interval,
+				      u8 mesh_handle)
 {
 	struct adv_info *adv;
 
···
 		memset(adv->per_adv_data, 0, sizeof(adv->per_adv_data));
 	} else {
 		if (hdev->adv_instance_cnt >= hdev->le_num_of_adv_sets ||
-		    instance < 1 || instance > hdev->le_num_of_adv_sets)
+		    instance < 1 || instance > hdev->le_num_of_adv_sets + 1)
 			return ERR_PTR(-EOVERFLOW);
 
 		adv = kzalloc(sizeof(*adv), GFP_KERNEL);
···
 	adv->min_interval = min_interval;
 	adv->max_interval = max_interval;
 	adv->tx_power = tx_power;
+	/* Defining a mesh_handle changes the timing units to ms,
+	 * rather than seconds, and ties the instance to the requested
+	 * mesh_tx queue.
+	 */
+	adv->mesh = mesh_handle;
 
 	hci_set_adv_instance_data(hdev, instance, adv_data_len, adv_data,
 				  scan_rsp_len, scan_rsp_data);
···
 
 	adv = hci_add_adv_instance(hdev, instance, flags, 0, NULL, 0, NULL,
 				   0, 0, HCI_ADV_TX_POWER_NO_PREFERENCE,
-				   min_interval, max_interval);
+				   min_interval, max_interval, 0);
 	if (IS_ERR(adv))
 		return adv;
 
···
 	mutex_init(&hdev->lock);
 	mutex_init(&hdev->req_lock);
 
+	INIT_LIST_HEAD(&hdev->mesh_pending);
 	INIT_LIST_HEAD(&hdev->mgmt_pending);
 	INIT_LIST_HEAD(&hdev->reject_list);
 	INIT_LIST_HEAD(&hdev->accept_list);

net/bluetooth/hci_event.c

···
 		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:
···
 					  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);
+					  d->last_adv_data_len, NULL, 0, 0);
 		}
 
 		/* Cancel this timer so that we don't try to disable scanning
···
 		 */
 		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;
 
···
 
 		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
 				  info->dev_class, HCI_RSSI_INVALID,
-				  flags, NULL, 0, NULL, 0);
+				  flags, NULL, 0, NULL, 0, 0);
 	}
 
 	hci_dev_unlock(hdev);
···
 
 			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
 					  info->dev_class, info->rssi,
-					  flags, NULL, 0, NULL, 0);
+					  flags, NULL, 0, NULL, 0, 0);
 		}
 	} else if (skb->len == array_size(ev->num,
 					  sizeof(struct inquiry_info_rssi))) {
···
 
 			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
 					  info->dev_class, info->rssi,
-					  flags, NULL, 0, NULL, 0);
+					  flags, NULL, 0, NULL, 0, 0);
 		}
 	} else {
 		bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
···
 
 		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
 				  info->dev_class, info->rssi,
-				  flags, info->data, eir_len, NULL, 0);
+				  flags, info->data, eir_len, NULL, 0, 0);
 	}
 
 	hci_dev_unlock(hdev);
···
 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 ext_adv, bool ctl_time, u64 instant)
 {
 	struct discovery_state *d = &hdev->discovery;
 	struct smp_irk *irk;
···
 	 * important to see if the address is matching the local
 	 * controller address.
 	 */
-	if (direct_addr) {
+	if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
 		direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
 						  &bdaddr_resolved);
 
···
 		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.
···
 		    idr_is_empty(&hdev->adv_monitors_idr))
 			return;
 
-		if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
-			flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
-		else
-			flags = 0;
 		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
-				  rssi, flags, data, len, NULL, 0);
+				  rssi, flags, data, len, NULL, 0, 0);
 		return;
 	}
 
···
 	 * and just sends a scan response event, then it is marked as
 	 * not connectable as well.
 	 */
-	if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
-	    type == LE_ADV_SCAN_RSP)
+	if (type == LE_ADV_SCAN_RSP)
 		flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
-	else
-		flags = 0;
 
 	/* If there's nothing pending either store the data from this
 	 * event or send an immediate device found event if the data
···
 		}
 
 		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
-				  rssi, flags, data, len, NULL, 0);
+				  rssi, flags, data, len, NULL, 0, 0);
 		return;
 	}
 
···
 					  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);
+					  d->last_adv_data_len, NULL, 0, 0);
 
 		/* If the new report will trigger a SCAN_REQ store it for
 		 * later merging.
···
 		 */
 		clear_pending_adv_report(hdev);
 		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
-				  rssi, flags, data, len, NULL, 0);
+				  rssi, flags, data, len, NULL, 0, 0);
 		return;
 	}
 
···
 	 */
 	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);
+			  d->last_adv_data, d->last_adv_data_len, data, len, 0);
 	clear_pending_adv_report(hdev);
 }
 
···
 				  struct sk_buff *skb)
 {
 	struct hci_ev_le_advertising_report *ev = data;
+	u64 instant = jiffies;
 
 	if (!ev->num)
 		return;
···
 			rssi = info->data[info->length];
 			process_adv_report(hdev, info->type, &info->bdaddr,
 					   info->bdaddr_type, NULL, 0, rssi,
-					   info->data, info->length, false);
+					   info->data, info->length, false,
+					   false, instant);
 		} else {
 			bt_dev_err(hdev, "Dropping invalid advertising data");
 		}
···
 				      struct sk_buff *skb)
 {
 	struct hci_ev_le_ext_adv_report *ev = data;
+	u64 instant = jiffies;
 
 	if (!ev->num)
 		return;
···
 			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));
+					   !(evt_type & LE_EXT_ADV_LEGACY_PDU),
+					   false, instant);
 		}
 	}
 
···
 					 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,
···
 		process_adv_report(hdev, info->type, &info->bdaddr,
 				   info->bdaddr_type, &info->direct_addr,
 				   info->direct_addr_type, info->rssi, NULL, 0,
-				   false);
+				   false, false, instant);
 	}
 
 	hci_dev_unlock(hdev);

net/bluetooth/hci_sock.c

···
 
 static void hci_sock_destruct(struct sock *sk)
 {
+	mgmt_cleanup(sk);
 	skb_queue_purge(&sk->sk_receive_queue);
 	skb_queue_purge(&sk->sk_write_queue);
 }

net/bluetooth/hci_sync.c

···
 	skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
 	if (IS_ERR(skb)) {
 		bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
-			   PTR_ERR(skb));
+				PTR_ERR(skb));
 		return PTR_ERR(skb);
 	}
 
···
 	hci_dev_unlock(hdev);
 }
 
+static int reenable_adv_sync(struct hci_dev *hdev, void *data)
+{
+	bt_dev_dbg(hdev, "");
+
+	if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
+	    list_empty(&hdev->adv_instances))
+		return 0;
+
+	if (hdev->cur_adv_instance) {
+		return hci_schedule_adv_instance_sync(hdev,
+						      hdev->cur_adv_instance,
+						      true);
+	} else {
+		if (ext_adv_capable(hdev)) {
+			hci_start_ext_adv_sync(hdev, 0x00);
+		} else {
+			hci_update_adv_data_sync(hdev, 0x00);
+			hci_update_scan_rsp_data_sync(hdev, 0x00);
+			hci_enable_advertising_sync(hdev);
+		}
+	}
+
+	return 0;
+}
+
+static void reenable_adv(struct work_struct *work)
+{
+	struct hci_dev *hdev = container_of(work, struct hci_dev,
+					    reenable_adv_work);
+	int status;
+
+	bt_dev_dbg(hdev, "");
+
+	hci_dev_lock(hdev);
+
+	status = hci_cmd_sync_queue(hdev, reenable_adv_sync, NULL, NULL);
+	if (status)
+		bt_dev_err(hdev, "failed to reenable ADV: %d", status);
+
+	hci_dev_unlock(hdev);
+}
+
 static void cancel_adv_timeout(struct hci_dev *hdev)
 {
 	if (hdev->adv_instance_timeout) {
···
 	mutex_init(&hdev->cmd_sync_work_lock);
 
 	INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work);
+	INIT_WORK(&hdev->reenable_adv_work, reenable_adv);
 	INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable);
 	INIT_DELAYED_WORK(&hdev->le_scan_restart, le_scan_restart);
 	INIT_DELAYED_WORK(&hdev->adv_instance_expire, adv_timeout_expire);
···
 	struct hci_cmd_sync_work_entry *entry, *tmp;
 
 	cancel_work_sync(&hdev->cmd_sync_work);
+	cancel_work_sync(&hdev->reenable_adv_work);
 
 	list_for_each_entry_safe(entry, tmp, &hdev->cmd_sync_work_list, list) {
 		if (entry->destroy)
···
 static int hci_clear_adv_sync(struct hci_dev *hdev, struct sock *sk, bool force)
 {
 	struct adv_info *adv, *n;
+	int err = 0;
 
 	if (ext_adv_capable(hdev))
 		/* Remove all existing sets */
-		return hci_clear_adv_sets_sync(hdev, sk);
+		err = hci_clear_adv_sets_sync(hdev, sk);
+	if (ext_adv_capable(hdev))
+		return err;
 
 	/* This is safe as long as there is no command send while the lock is
 	 * held.
···
 static int hci_remove_adv_sync(struct hci_dev *hdev, u8 instance,
 			       struct sock *sk)
 {
-	int err;
+	int err = 0;
 
 	/* If we use extended advertising, instance has to be removed first. */
 	if (ext_adv_capable(hdev))
-		return hci_remove_ext_adv_instance_sync(hdev, instance, sk);
+		err = hci_remove_ext_adv_instance_sync(hdev, instance, sk);
+	if (ext_adv_capable(hdev))
+		return err;
 
 	/* This is safe as long as there is no command send while the lock is
 	 * held.
···
 int hci_disable_advertising_sync(struct hci_dev *hdev)
 {
 	u8 enable = 0x00;
+	int err = 0;
 
 	/* If controller is not advertising we are done. */
 	if (!hci_dev_test_flag(hdev, HCI_LE_ADV))
 		return 0;
 
 	if (ext_adv_capable(hdev))
-		return hci_disable_ext_adv_instance_sync(hdev, 0x00);
+		err = hci_disable_ext_adv_instance_sync(hdev, 0x00);
+	if (ext_adv_capable(hdev))
+		return err;
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_ADV_ENABLE,
 				     sizeof(enable), &enable, HCI_CMD_TIMEOUT);
···
 
 	memset(&cp, 0, sizeof(cp));
 	cp.enable = val;
-	cp.filter_dup = filter_dup;
+
+	if (hci_dev_test_flag(hdev, HCI_MESH))
+		cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
+	else
+		cp.filter_dup = filter_dup;
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE,
 				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
···
 
 	memset(&cp, 0, sizeof(cp));
 	cp.enable = val;
-	cp.filter_dup = filter_dup;
+
+	if (val && hci_dev_test_flag(hdev, HCI_MESH))
+		cp.filter_dup = LE_SCAN_FILTER_DUP_DISABLE;
+	else
+		cp.filter_dup = filter_dup;
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_SCAN_ENABLE,
 				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
···
 	u8 own_addr_type;
 	u8 filter_policy;
 	u16 window, interval;
+	u8 filter_dups = LE_SCAN_FILTER_DUP_ENABLE;
 	int err;
 
 	if (hdev->scanning_paused) {
···
 		interval = hdev->le_scan_interval;
 	}
 
+	/* Disable all filtering for Mesh */
+	if (hci_dev_test_flag(hdev, HCI_MESH)) {
+		filter_policy = 0;
+		filter_dups = LE_SCAN_FILTER_DUP_DISABLE;
+	}
+
 	bt_dev_dbg(hdev, "LE passive scan with acceptlist = %d", filter_policy);
 
 	return hci_start_scan_sync(hdev, LE_SCAN_PASSIVE, interval, window,
-				   own_addr_type, filter_policy,
-				   LE_SCAN_FILTER_DUP_ENABLE);
+				   own_addr_type, filter_policy, filter_dups);
 }
 
 /* This function controls the passive scanning based on hdev->pend_le_conns
···
 	bt_dev_dbg(hdev, "ADV monitoring is %s",
 		   hci_is_adv_monitoring(hdev) ? "on" : "off");
 
-	if (list_empty(&hdev->pend_le_conns) &&
+	if (!hci_dev_test_flag(hdev, HCI_MESH) &&
+	    list_empty(&hdev->pend_le_conns) &&
 	    list_empty(&hdev->pend_le_reports) &&
 	    !hci_is_adv_monitoring(hdev) &&
 	    !hci_dev_test_flag(hdev, HCI_PA_SYNC)) {

net/bluetooth/mgmt.c

···
 	MGMT_OP_ADD_EXT_ADV_PARAMS,
 	MGMT_OP_ADD_EXT_ADV_DATA,
 	MGMT_OP_ADD_ADV_PATTERNS_MONITOR_RSSI,
+	MGMT_OP_SET_MESH_RECEIVER,
+	MGMT_OP_MESH_READ_FEATURES,
+	MGMT_OP_MESH_SEND,
+	MGMT_OP_MESH_SEND_CANCEL,
 };
 
 static const u16 mgmt_events[] = {
···
 	hci_dev_unlock(hdev);
 }
 
+static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev);
+
+static void mesh_send_complete(struct hci_dev *hdev,
+			       struct mgmt_mesh_tx *mesh_tx, bool silent)
+{
+	u8 handle = mesh_tx->handle;
+
+	if (!silent)
+		mgmt_event(MGMT_EV_MESH_PACKET_CMPLT, hdev, &handle,
+			   sizeof(handle), NULL);
+
+	mgmt_mesh_remove(mesh_tx);
+}
+
+static int mesh_send_done_sync(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+
+	hci_dev_clear_flag(hdev, HCI_MESH_SENDING);
+	hci_disable_advertising_sync(hdev);
+	mesh_tx = mgmt_mesh_next(hdev, NULL);
+
+	if (mesh_tx)
+		mesh_send_complete(hdev, mesh_tx, false);
+
+	return 0;
+}
+
+static int mesh_send_sync(struct hci_dev *hdev, void *data);
+static void mesh_send_start_complete(struct hci_dev *hdev, void *data, int err);
+static void mesh_next(struct hci_dev *hdev, void *data, int err)
+{
+	struct mgmt_mesh_tx *mesh_tx = mgmt_mesh_next(hdev, NULL);
+
+	if (!mesh_tx)
+		return;
+
+	err = hci_cmd_sync_queue(hdev, mesh_send_sync, mesh_tx,
+				 mesh_send_start_complete);
+
+	if (err < 0)
+		mesh_send_complete(hdev, mesh_tx, false);
+	else
+		hci_dev_set_flag(hdev, HCI_MESH_SENDING);
+}
+
+static void mesh_send_done(struct work_struct *work)
+{
+	struct hci_dev *hdev = container_of(work, struct hci_dev,
+					    mesh_send_done.work);
+
+	if (!hci_dev_test_flag(hdev, HCI_MESH_SENDING))
+		return;
+
+	hci_cmd_sync_queue(hdev, mesh_send_done_sync, NULL, mesh_next);
+}
+
 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
 {
 	if (hci_dev_test_and_set_flag(hdev, HCI_MGMT))
···
 	INIT_DELAYED_WORK(&hdev->discov_off, discov_off);
 	INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
 	INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
+	INIT_DELAYED_WORK(&hdev->mesh_send_done, mesh_send_done);
 
 	/* Non-mgmt controlled devices get this bit set
 	 * implicitly so that pairing works for them, however
···
 		hci_update_passive_scan(hdev);
 	}
 
+	return err;
+}
+
+static void set_mesh_complete(struct hci_dev *hdev, void *data, int err)
+{
+	struct mgmt_pending_cmd *cmd = data;
+	u8 status = mgmt_status(err);
+	struct sock *sk = cmd->sk;
+
+	if (status) {
+		mgmt_pending_foreach(MGMT_OP_SET_MESH_RECEIVER, hdev,
+				     cmd_status_rsp, &status);
+		return;
+	}
+
+	mgmt_pending_remove(cmd);
+	mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_MESH_RECEIVER, 0, NULL, 0);
+}
+
+static int set_mesh_sync(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_pending_cmd *cmd = data;
+	struct mgmt_cp_set_mesh *cp = cmd->param;
+	size_t len = cmd->param_len;
+
+	memset(hdev->mesh_ad_types, 0, sizeof(hdev->mesh_ad_types));
+
+	if (cp->enable)
+		hci_dev_set_flag(hdev, HCI_MESH);
+	else
+		hci_dev_clear_flag(hdev, HCI_MESH);
+
+	len -= sizeof(*cp);
+
+	/* If filters don't fit, forward all adv pkts */
+	if (len <= sizeof(hdev->mesh_ad_types))
+		memcpy(hdev->mesh_ad_types, cp->ad_types, len);
+
+	hci_update_passive_scan_sync(hdev);
+	return 0;
+}
+
+static int set_mesh(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
+{
+	struct mgmt_cp_set_mesh *cp = data;
+	struct mgmt_pending_cmd *cmd;
+	int err = 0;
+
+	bt_dev_dbg(hdev, "sock %p", sk);
+
+	if (!lmp_le_capable(hdev))
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_MESH_RECEIVER,
+				       MGMT_STATUS_NOT_SUPPORTED);
+
+	if (cp->enable != 0x00 && cp->enable != 0x01)
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_MESH_RECEIVER,
+				       MGMT_STATUS_INVALID_PARAMS);
+
+	hci_dev_lock(hdev);
+
+	cmd = mgmt_pending_add(sk, MGMT_OP_SET_MESH_RECEIVER, hdev, data, len);
+	if (!cmd)
+		err = -ENOMEM;
+	else
+		err = hci_cmd_sync_queue(hdev, set_mesh_sync, cmd,
+					 set_mesh_complete);
+
+	if (err < 0) {
+		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_MESH_RECEIVER,
+				      MGMT_STATUS_FAILED);
+
+		if (cmd)
+			mgmt_pending_remove(cmd);
+	}
+
+	hci_dev_unlock(hdev);
+	return err;
+}
+
+static void mesh_send_start_complete(struct hci_dev *hdev, void *data, int err)
+{
+	struct mgmt_mesh_tx *mesh_tx = data;
+	struct mgmt_cp_mesh_send *send = (void *)mesh_tx->param;
+	unsigned long mesh_send_interval;
+	u8 mgmt_err = mgmt_status(err);
+
+	/* Report any errors here, but don't report completion */
+
+	if (mgmt_err) {
+		hci_dev_clear_flag(hdev, HCI_MESH_SENDING);
+		/* Send Complete Error Code for handle */
+		mesh_send_complete(hdev, mesh_tx, false);
+		return;
+	}
+
+	mesh_send_interval = msecs_to_jiffies((send->cnt) * 25);
+	queue_delayed_work(hdev->req_workqueue, &hdev->mesh_send_done,
+			   mesh_send_interval);
+}
+
+static int mesh_send_sync(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_mesh_tx *mesh_tx = data;
+	struct mgmt_cp_mesh_send *send = (void *)mesh_tx->param;
+	struct adv_info *adv, *next_instance;
+	u8 instance = hdev->le_num_of_adv_sets + 1;
+	u16 timeout, duration;
+	int err = 0;
+
+	if (hdev->le_num_of_adv_sets <= hdev->adv_instance_cnt)
+		return MGMT_STATUS_BUSY;
+
+	timeout = 1000;
+	duration = send->cnt * INTERVAL_TO_MS(hdev->le_adv_max_interval);
+	adv = hci_add_adv_instance(hdev, instance, 0,
+				   send->adv_data_len, send->adv_data,
+				   0, NULL,
+				   timeout, duration,
+				   HCI_ADV_TX_POWER_NO_PREFERENCE,
+				   hdev->le_adv_min_interval,
+				   hdev->le_adv_max_interval,
+				   mesh_tx->handle);
+
+	if (!IS_ERR(adv))
+		mesh_tx->instance = instance;
+	else
+		err = PTR_ERR(adv);
+
+	if (hdev->cur_adv_instance == instance) {
+		/* If the currently advertised instance is being changed then
+		 * cancel the current advertising and schedule the next
+		 * instance. If there is only one instance then the overridden
+		 * advertising data will be visible right away.
+		 */
+		cancel_adv_timeout(hdev);
+
+		next_instance = hci_get_next_instance(hdev, instance);
+		if (next_instance)
+			instance = next_instance->instance;
+		else
+			instance = 0;
+	} else if (hdev->adv_instance_timeout) {
+		/* Immediately advertise the new instance if no other, or
+		 * let it go naturally from queue if ADV is already happening
+		 */
+		instance = 0;
+	}
+
+	if (instance)
+		return hci_schedule_adv_instance_sync(hdev, instance, true);
+
+	return err;
+}
+
+static void send_count(struct mgmt_mesh_tx *mesh_tx, void *data)
+{
+	struct mgmt_rp_mesh_read_features *rp = data;
+
+	if (rp->used_handles >= rp->max_handles)
+		return;
+
+	rp->handles[rp->used_handles++] = mesh_tx->handle;
+}
+
+static int mesh_features(struct sock *sk, struct hci_dev *hdev,
+			 void *data, u16 len)
+{
+	struct mgmt_rp_mesh_read_features rp;
+
+	if (!lmp_le_capable(hdev))
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_READ_FEATURES,
+				       MGMT_STATUS_NOT_SUPPORTED);
+
+	memset(&rp, 0, sizeof(rp));
+	rp.index = cpu_to_le16(hdev->id);
+	if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
+		rp.max_handles = MESH_HANDLES_MAX;
+
+	hci_dev_lock(hdev);
+
+	if (rp.max_handles)
+		mgmt_mesh_foreach(hdev, send_count, &rp, sk);
+
+	mgmt_cmd_complete(sk, hdev->id, MGMT_OP_MESH_READ_FEATURES, 0, &rp,
+			  rp.used_handles + sizeof(rp) - MESH_HANDLES_MAX);
+
+	hci_dev_unlock(hdev);
+	return 0;
+}
+
+static int send_cancel(struct hci_dev *hdev, void *data)
+{
+	struct mgmt_pending_cmd *cmd = data;
+	struct mgmt_cp_mesh_send_cancel *cancel = (void *)cmd->param;
+	struct mgmt_mesh_tx *mesh_tx;
+
+	if (!cancel->handle) {
+		do {
+			mesh_tx = mgmt_mesh_next(hdev, cmd->sk);
+
+			if (mesh_tx)
+				mesh_send_complete(hdev, mesh_tx, false);
+		} while (mesh_tx);
+	} else {
+		mesh_tx = mgmt_mesh_find(hdev, cancel->handle);
+
+		if (mesh_tx && mesh_tx->sk == cmd->sk)
+			mesh_send_complete(hdev, mesh_tx, false);
+	}
+
+	mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_MESH_SEND_CANCEL,
+			  0, NULL, 0);
+	mgmt_pending_free(cmd);
+
+	return 0;
+}
+
+static int mesh_send_cancel(struct sock *sk, struct hci_dev *hdev,
+			    void *data, u16 len)
+{
+	struct mgmt_pending_cmd *cmd;
+	int err;
+
+	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_SEND_CANCEL,
+				       MGMT_STATUS_REJECTED);
+
+	hci_dev_lock(hdev);
+	cmd = mgmt_pending_new(sk, MGMT_OP_MESH_SEND_CANCEL, hdev, data, len);
+	if (!cmd)
+		err = -ENOMEM;
+	else
+		err = hci_cmd_sync_queue(hdev, send_cancel, cmd, NULL);
+
+	if (err < 0) {
+		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_SEND_CANCEL,
+				      MGMT_STATUS_FAILED);
+
+		if (cmd)
+			mgmt_pending_free(cmd);
+	}
+
+	hci_dev_unlock(hdev);
+	return err;
+}
+
+static int mesh_send(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+	struct mgmt_cp_mesh_send *send = data;
+	struct mgmt_rp_mesh_read_features rp;
+	bool sending;
+	int err = 0;
+
+	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) ||
+	    len <= MGMT_MESH_SEND_SIZE ||
+	    len > (MGMT_MESH_SEND_SIZE + 31))
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_SEND,
+				       MGMT_STATUS_REJECTED);
+
+	hci_dev_lock(hdev);
+
+	memset(&rp, 0, sizeof(rp));
+	rp.max_handles = MESH_HANDLES_MAX;
+
+	mgmt_mesh_foreach(hdev, send_count, &rp, sk);
+
+	if (rp.max_handles <= rp.used_handles) {
+		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_SEND,
+				      MGMT_STATUS_BUSY);
+		goto done;
+	}
+
+	sending = hci_dev_test_flag(hdev, HCI_MESH_SENDING);
+	mesh_tx = mgmt_mesh_add(sk, hdev, send, len);
+
+	if (!mesh_tx)
+		err = -ENOMEM;
+	else if (!sending)
+		err = hci_cmd_sync_queue(hdev, mesh_send_sync, mesh_tx,
+					 mesh_send_start_complete);
+
+	if (err < 0) {
+		bt_dev_err(hdev, "Send Mesh Failed %d", err);
+		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_MESH_SEND,
+				      MGMT_STATUS_FAILED);
+
+		if (mesh_tx) {
+			if (sending)
+				mgmt_mesh_remove(mesh_tx);
+		}
+	} else {
+		hci_dev_set_flag(hdev, HCI_MESH_SENDING);
+
+		mgmt_cmd_complete(sk, hdev->id, MGMT_OP_MESH_SEND, 0,
+				  &mesh_tx->handle, 1);
+	}
+
+done:
+	hci_dev_unlock(hdev);
 	return err;
 }
 
···
 	if (!hdev_is_powered(hdev) ||
 	    (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
 	     (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) ||
+	    hci_dev_test_flag(hdev, HCI_MESH) ||
 	    hci_conn_num(hdev, LE_LINK) > 0 ||
 	    (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
 	     hdev->le_scan_type == LE_SCAN_ACTIVE)) {
···
 	/* In extended adv TX_POWER returned from Set Adv Param
 	 * will be always valid.
 	 */
-	if ((hdev->adv_tx_power != HCI_TX_POWER_INVALID) ||
-	    ext_adv_capable(hdev))
+	if (hdev->adv_tx_power != HCI_TX_POWER_INVALID || ext_adv_capable(hdev))
 		flags |= MGMT_ADV_FLAG_TX_POWER;
 
 	if (ext_adv_capable(hdev)) {
···
 
 	instance = rp->instance;
 	list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
-		*instance = adv_instance->instance;
-		instance++;
+		/* Only instances 1-le_num_of_adv_sets are externally visible */
+		if (adv_instance->instance <= hdev->adv_instance_cnt) {
+			*instance = adv_instance->instance;
+			instance++;
+		} else {
+			rp->num_instances--;
+			rp_len--;
+		}
 	}
 
 	hci_dev_unlock(hdev);
···
 				   timeout, duration,
 				   HCI_ADV_TX_POWER_NO_PREFERENCE,
 				   hdev->le_adv_min_interval,
-				   hdev->le_adv_max_interval);
+				   hdev->le_adv_max_interval, 0);
 	if (IS_ERR(adv)) {
 		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
 				      MGMT_STATUS_FAILED);
···
 	/* Create advertising instance with no advertising or response data */
 	adv = hci_add_adv_instance(hdev, cp->instance, flags, 0, NULL, 0, NULL,
 				   timeout, duration, tx_power, min_interval,
-				   max_interval);
+				   max_interval, 0);
 
 	if (IS_ERR(adv)) {
 		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_EXT_ADV_PARAMS,
···
 	{ add_ext_adv_data,        MGMT_ADD_EXT_ADV_DATA_SIZE,
 						HCI_MGMT_VAR_LEN },
 	{ add_adv_patterns_monitor_rssi,
-				   MGMT_ADD_ADV_PATTERNS_MONITOR_RSSI_SIZE,
+				   MGMT_ADD_ADV_PATTERNS_MONITOR_RSSI_SIZE },
+	{ set_mesh,                MGMT_SET_MESH_RECEIVER_SIZE,
 						HCI_MGMT_VAR_LEN },
+	{ mesh_features,           MGMT_MESH_READ_FEATURES_SIZE },
+	{ mesh_send,               MGMT_MESH_SEND_SIZE,
+						HCI_MGMT_VAR_LEN },
+	{ mesh_send_cancel,        MGMT_MESH_SEND_CANCEL_SIZE },
 };
 
 void mgmt_index_added(struct hci_dev *hdev)
···
 		kfree_skb(skb);
 }
 
+static void mesh_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr,
+			      u8 addr_type, s8 rssi, u32 flags, u8 *eir,
+			      u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
+			      u64 instant)
+{
+	struct sk_buff *skb;
+	struct mgmt_ev_mesh_device_found *ev;
+	int i, j;
+
+	if (!hdev->mesh_ad_types[0])
+		goto accepted;
+
+	/* Scan for requested AD types */
+	if (eir_len > 0) {
+		for (i = 0; i + 1 < eir_len; i += eir[i] + 1) {
+			for (j = 0; j < sizeof(hdev->mesh_ad_types); j++) {
+				if (!hdev->mesh_ad_types[j])
+					break;
+
+				if (hdev->mesh_ad_types[j] == eir[i + 1])
+					goto accepted;
+			}
+		}
+	}
+
+	if (scan_rsp_len > 0) {
+		for (i = 0; i + 1 < scan_rsp_len; i += scan_rsp[i] + 1) {
+			for (j = 0; j < sizeof(hdev->mesh_ad_types); j++) {
+				if (!hdev->mesh_ad_types[j])
+					break;
+
+				if (hdev->mesh_ad_types[j] == scan_rsp[i + 1])
+					goto accepted;
+			}
+		}
+	}
+
+	return;
+
+accepted:
+	skb = mgmt_alloc_skb(hdev, MGMT_EV_MESH_DEVICE_FOUND,
+			     sizeof(*ev) + eir_len + scan_rsp_len);
+	if (!skb)
+		return;
+
+	ev = skb_put(skb, sizeof(*ev));
+
+	bacpy(&ev->addr.bdaddr, bdaddr);
+	ev->addr.type = link_to_bdaddr(LE_LINK, addr_type);
+	ev->rssi = rssi;
+	ev->flags = cpu_to_le32(flags);
+	ev->instant = cpu_to_le64(instant);
+
+	if (eir_len > 0)
+		/* Copy EIR or advertising data into event */
+		skb_put_data(skb, eir, eir_len);
+
+	if (scan_rsp_len > 0)
+		/* Append scan response data to event */
+		skb_put_data(skb, scan_rsp, scan_rsp_len);
+
+	ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
+
+	mgmt_event_skb(skb, NULL);
+}
+
 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 		       u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
-		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
+		       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
+		       u64 instant)
 {
 	struct sk_buff *skb;
 	struct mgmt_ev_device_found *ev;
 	bool report_device = hci_discovery_active(hdev);
+
+	if (hci_dev_test_flag(hdev, HCI_MESH) && link_type == LE_LINK)
+		mesh_device_found(hdev, bdaddr, addr_type, rssi, flags,
+				  eir, eir_len, scan_rsp, scan_rsp_len,
+				  instant);
 
 	/* Don't send events for a non-kernel initiated discovery. With
 	 * LE one exception is if we have pend_le_reports > 0 in which
···
 void mgmt_exit(void)
 {
 	hci_mgmt_chan_unregister(&chan);
+}
+
+void mgmt_cleanup(struct sock *sk)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+	struct hci_dev *hdev;
+
+	read_lock(&hci_dev_list_lock);
+
+	list_for_each_entry(hdev, &hci_dev_list, list) {
+		do {
+			mesh_tx = mgmt_mesh_next(hdev, sk);
+
+			if (mesh_tx)
+				mesh_send_complete(hdev, mesh_tx, true);
+		} while (mesh_tx);
+	}
+
+	read_unlock(&hci_dev_list_lock);
 }

net/bluetooth/mgmt_util.c

···
 	list_del(&cmd->list);
 	mgmt_pending_free(cmd);
 }
+
+void mgmt_mesh_foreach(struct hci_dev *hdev,
+		       void (*cb)(struct mgmt_mesh_tx *mesh_tx, void *data),
+		       void *data, struct sock *sk)
+{
+	struct mgmt_mesh_tx *mesh_tx, *tmp;
+
+	list_for_each_entry_safe(mesh_tx, tmp, &hdev->mgmt_pending, list) {
+		if (!sk || mesh_tx->sk == sk)
+			cb(mesh_tx, data);
+	}
+}
+
+struct mgmt_mesh_tx *mgmt_mesh_next(struct hci_dev *hdev, struct sock *sk)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+
+	if (list_empty(&hdev->mesh_pending))
+		return NULL;
+
+	list_for_each_entry(mesh_tx, &hdev->mesh_pending, list) {
+		if (!sk || mesh_tx->sk == sk)
+			return mesh_tx;
+	}
+
+	return NULL;
+}
+
+struct mgmt_mesh_tx *mgmt_mesh_find(struct hci_dev *hdev, u8 handle)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+
+	if (list_empty(&hdev->mesh_pending))
+		return NULL;
+
+	list_for_each_entry(mesh_tx, &hdev->mesh_pending, list) {
+		if (mesh_tx->handle == handle)
+			return mesh_tx;
+	}
+
+	return NULL;
+}
+
+struct mgmt_mesh_tx *mgmt_mesh_add(struct sock *sk, struct hci_dev *hdev,
+				   void *data, u16 len)
+{
+	struct mgmt_mesh_tx *mesh_tx;
+
+	mesh_tx = kzalloc(sizeof(*mesh_tx), GFP_KERNEL);
+	if (!mesh_tx)
+		return NULL;
+
+	hdev->mesh_send_ref++;
+	if (!hdev->mesh_send_ref)
+		hdev->mesh_send_ref++;
+
+	mesh_tx->handle = hdev->mesh_send_ref;
+	mesh_tx->index = hdev->id;
+	memcpy(mesh_tx->param, data, len);
+	mesh_tx->param_len = len;
+	mesh_tx->sk = sk;
+	sock_hold(sk);
+
+	list_add_tail(&mesh_tx->list, &hdev->mesh_pending);
+
+	return mesh_tx;
+}
+
+void mgmt_mesh_remove(struct mgmt_mesh_tx *mesh_tx)
+{
+	list_del(&mesh_tx->list);
+	sock_put(mesh_tx->sk);
+	kfree(mesh_tx);
+}

net/bluetooth/mgmt_util.h

···
    SOFTWARE IS DISCLAIMED.
 */
 
+struct mgmt_mesh_tx {
+	struct list_head list;
+	int index;
+	size_t param_len;
+	struct sock *sk;
+	u8 handle;
+	u8 instance;
+	u8 param[sizeof(struct mgmt_cp_mesh_send) + 29];
+};
+
 struct mgmt_pending_cmd {
 	struct list_head list;
 	u16 opcode;
···
 					  void *data, u16 len);
 void mgmt_pending_free(struct mgmt_pending_cmd *cmd);
 void mgmt_pending_remove(struct mgmt_pending_cmd *cmd);
+void mgmt_mesh_foreach(struct hci_dev *hdev,
+		       void (*cb)(struct mgmt_mesh_tx *mesh_tx, void *data),
+		       void *data, struct sock *sk);
+struct mgmt_mesh_tx *mgmt_mesh_find(struct hci_dev *hdev, u8 handle);
+struct mgmt_mesh_tx *mgmt_mesh_next(struct hci_dev *hdev, struct sock *sk);
+struct mgmt_mesh_tx *mgmt_mesh_add(struct sock *sk, struct hci_dev *hdev,
+				   void *data, u16 len);
+void mgmt_mesh_remove(struct mgmt_mesh_tx *mesh_tx);