Bluetooth: Add RSSI Monitor feature
authorSudha Bheemanna <b.sudha@samsung.com>
Wed, 24 Aug 2016 11:51:15 +0000 (17:21 +0530)
committerJunghoon Kim <jhoon20.kim@samsung.com>
Thu, 2 Apr 2020 04:09:05 +0000 (13:09 +0900)
Added feature support for monitoring the RSSI value.
Commands and events for enabling, disabling and setting
rssi threshold values are added.

Change-Id: I850643a9228afc017e54217a11826b9c6a68a96b
Signed-off-by: Sudha Bheemanna <b.sudha@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Amit Purwar <amit.purwar@samsung.com>
include/net/bluetooth/hci.h
include/net/bluetooth/hci_core.h
include/net/bluetooth/mgmt_tizen.h
net/bluetooth/hci_event.c
net/bluetooth/mgmt.c

index 47a8194..a5c140e 100644 (file)
@@ -1674,6 +1674,60 @@ struct hci_cp_le_set_adv_set_rand_addr {
        bdaddr_t  bdaddr;
 } __packed;
 
+#ifdef TIZEN_BT
+/*
+ * Vendor Specific HCI Command
+ * Vendor: Broadcom
+ * Purpose: This HCI is used to enable RSSI monitoring and setting
+ * Threshold Values for LE Link
+ */
+#define HCI_OP_ENABLE_RSSI             0xfce9
+
+struct hci_cp_set_enable_rssi {
+       __u8    hci_le_ext_opcode;
+       __u8    le_enable_cs_Features;
+       __u8    data[3];
+} __packed;
+
+struct hci_cp_set_rssi_threshold {
+       __u8    hci_le_ext_opcode;
+       __u8    mode;
+       __le16  conn_handle;
+       __u8    alert_mask;
+       __u8    low_th;
+       __u8    in_range_th;
+       __u8    high_th;
+} __packed;
+
+struct hci_cc_rsp_enable_rssi {
+       __u8    status;
+       __u8    le_ext_opcode;
+} __packed;
+
+struct hci_ev_vendor_specific_rssi_alert {
+       __le16  conn_handle;
+       __s8    alert_type;
+       __s8    rssi_dbm;
+} __packed;
+
+/*
+ * Vendor Specific HCI Command
+ * Vendor: Broadcom
+ * Purpose: This HCI is used to get Raw RSSI value for a Link
+ */
+#define HCI_OP_GET_RAW_RSSI            0xfc48
+
+struct hci_cp_get_raw_rssi {
+       __le16  conn_handle;
+} __packed;
+
+struct hci_cc_rp_get_raw_rssi {
+       __u8    status;
+       __le16  conn_handle;
+       __s8    rssi_dbm;
+} __packed;
+#endif
+
 /* ---- HCI Events ---- */
 #define HCI_EV_INQUIRY_COMPLETE                0x01
 
index 29522e6..33a567d 100644 (file)
@@ -517,6 +517,9 @@ struct hci_conn {
        void            *sco_data;
        struct amp_mgr  *amp_mgr;
 
+#ifdef TIZEN_BT
+       bool            rssi_monitored;
+#endif
        struct hci_conn *link;
 
        void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
@@ -895,6 +898,70 @@ static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
        return NULL;
 }
 
+#ifdef TIZEN_BT
+static inline bool hci_conn_rssi_state_set(struct hci_dev *hdev,
+                                       __u8 type, bdaddr_t *ba, bool value)
+{
+       struct hci_conn_hash *h = &hdev->conn_hash;
+       struct hci_conn  *c;
+       __u8 conn_type;
+
+       if (type == 0x01)
+               conn_type = LE_LINK;
+       else
+               conn_type = ACL_LINK;
+
+       rcu_read_lock();
+
+       list_for_each_entry_rcu(c, &h->list, list) {
+               if (c->type == conn_type && !bacmp(&c->dst, ba)) {
+                       c->rssi_monitored = value;
+                       rcu_read_unlock();
+                       return true;
+               }
+       }
+
+       rcu_read_unlock();
+       return false;
+}
+
+static inline void hci_conn_rssi_unset_all(struct hci_dev *hdev,
+                                       __u8 type)
+{
+       struct hci_conn_hash *h = &hdev->conn_hash;
+       struct hci_conn  *c;
+       __u8 conn_type;
+
+       if (type == 0x01)
+               conn_type = LE_LINK;
+       else
+               conn_type = ACL_LINK;
+
+       rcu_read_lock();
+       list_for_each_entry_rcu(c, &h->list, list) {
+               if (c->type == conn_type)
+                       c->rssi_monitored = false;
+       }
+       rcu_read_unlock();
+}
+
+static inline int hci_conn_hash_lookup_rssi_count(struct hci_dev *hdev)
+{
+       struct hci_conn_hash *h = &hdev->conn_hash;
+       struct hci_conn  *c;
+       int count = 0;
+
+       rcu_read_lock();
+       list_for_each_entry_rcu(c, &h->list, list) {
+               if (c->rssi_monitored == true)
+                       ++count;
+       }
+       rcu_read_unlock();
+
+       return count;
+}
+#endif
+
 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 void hci_sco_setup(struct hci_conn *conn, __u8 status);
@@ -1578,6 +1645,19 @@ void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
                              u8 instance);
 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
 
+#ifdef TIZEN_BT
+void mgmt_rssi_enable_success(struct sock *sk, struct hci_dev *hdev,
+               void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
+void mgmt_rssi_disable_success(struct sock *sk, struct hci_dev *hdev,
+               void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
+int mgmt_set_rssi_threshold(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len);
+void mgmt_rssi_alert_evt(struct hci_dev *hdev, struct sk_buff *skb);
+void mgmt_raw_rssi_response(struct hci_dev *hdev,
+               struct hci_cc_rp_get_raw_rssi *rp, int success);
+void mgmt_enable_rssi_cc(struct hci_dev *hdev, void *response, u8 status);
+#endif
+
 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
                      u16 to_multiplier);
 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
index 6dc8e36..46f652b 100644 (file)
@@ -63,4 +63,67 @@ struct mgmt_cp_remove_dev_from_white_list {
 #define MGMT_OP_CLEAR_DEV_WHITE_LIST           (TIZEN_OP_CODE_BASE + 0x06)
 #define MGMT_OP_CLEAR_DEV_WHITE_LIST_SIZE      0
 
+/* For RSSI monitoring */
+#define MGMT_OP_SET_RSSI_ENABLE                        (TIZEN_OP_CODE_BASE + 0x07)
+#define MGMT_SET_RSSI_ENABLE_SIZE              10
+
+struct mgmt_cp_set_enable_rssi {
+       __s8    low_th;
+       __s8    in_range_th;
+       __s8    high_th;
+       bdaddr_t        bdaddr;
+       __s8    link_type;
+} __packed;
+
+struct mgmt_cc_rsp_enable_rssi {
+       __u8    status;
+       __u8    le_ext_opcode;
+       bdaddr_t        bt_address;
+       __s8    link_type;
+} __packed;
+
+#define MGMT_OP_GET_RAW_RSSI                   (TIZEN_OP_CODE_BASE + 0x08)
+#define MGMT_GET_RAW_RSSI_SIZE                 7
+
+struct mgmt_cp_get_raw_rssi {
+       bdaddr_t bt_address;
+       __u8    link_type;
+} __packed;
+
+#define MGMT_OP_SET_RSSI_DISABLE               (TIZEN_OP_CODE_BASE + 0x09)
+#define MGMT_SET_RSSI_DISABLE_SIZE             7
+struct mgmt_cp_disable_rssi {
+       bdaddr_t        bdaddr;
+       __u8    link_type;
+} __packed;
+struct mgmt_cc_rp_disable_rssi {
+       __u8    status;
+       __u8    le_ext_opcode;
+       bdaddr_t        bt_address;
+       __s8    link_type;
+} __packed;
+/* RSSI monitoring */
+
+/* For handling of RSSI Events */
+#define MGMT_EV_RSSI_ALERT                     (TIZEN_EV_BASE + 0x04)
+struct mgmt_ev_vendor_specific_rssi_alert {
+       bdaddr_t        bdaddr;
+       __s8    link_type;
+       __s8    alert_type;
+       __s8    rssi_dbm;
+} __packed;
+
+#define MGMT_EV_RAW_RSSI                       (TIZEN_EV_BASE + 0x05)
+struct mgmt_cc_rp_get_raw_rssi {
+       __u8    status;
+       __s8    rssi_dbm;
+       __u8    link_type;
+       bdaddr_t        bt_address;
+} __packed;
+
+#define MGMT_EV_RSSI_ENABLED                   (TIZEN_EV_BASE + 0x06)
+
+#define MGMT_EV_RSSI_DISABLED                  (TIZEN_EV_BASE + 0x07)
+/* Handling of RSSI Events */
+
 #endif /* __MGMT_TIZEN_H */
index 3e7badb..f7616f7 100644 (file)
@@ -1604,6 +1604,30 @@ static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
        hci_dev_unlock(hdev);
 }
 
+#ifdef TIZEN_BT
+static void hci_cc_enable_rssi(struct hci_dev *hdev,
+                                         struct sk_buff *skb)
+{
+       struct hci_cc_rsp_enable_rssi *rp = (void *)skb->data;
+
+       BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
+              hdev->name, rp->status, rp->le_ext_opcode);
+
+       mgmt_enable_rssi_cc(hdev, rp, rp->status);
+}
+
+static void hci_cc_get_raw_rssi(struct hci_dev *hdev,
+                                         struct sk_buff *skb)
+{
+       struct hci_cc_rp_get_raw_rssi *rp = (void *)skb->data;
+
+       BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
+              hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
+
+       mgmt_raw_rssi_response(hdev, rp, rp->status);
+}
+#endif
+
 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
 {
        struct hci_rp_read_rssi *rp = (void *) skb->data;
@@ -3342,7 +3366,15 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
        case HCI_OP_LE_SET_ADV_SET_RAND_ADDR:
                hci_cc_le_set_adv_set_random_addr(hdev, skb);
                break;
+#ifdef TIZEN_BT
+       case HCI_OP_ENABLE_RSSI:
+               hci_cc_enable_rssi(hdev, skb);
+               break;
 
+       case HCI_OP_GET_RAW_RSSI:
+               hci_cc_get_raw_rssi(hdev, skb);
+               break;
+#endif
        default:
                BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
                break;
index c8081c1..f63f7c0 100644 (file)
@@ -5528,6 +5528,689 @@ unlocked:
 
        return err;
 }
+
+static void set_rssi_threshold_complete(struct hci_dev *hdev,
+                       u8 status, u16 opcode)
+{
+       struct mgmt_pending_cmd *cmd;
+
+       BT_DBG("status 0x%02x", status);
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev);
+       if (!cmd)
+               goto unlock;
+
+       if (status)
+               mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               mgmt_status(status));
+       else
+               mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE, 0,
+                               NULL, 0);
+
+       mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
+static void set_rssi_disable_complete(struct hci_dev *hdev,
+                       u8 status, u16 opcode)
+{
+       struct mgmt_pending_cmd *cmd;
+
+       BT_DBG("status 0x%02x", status);
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev);
+       if (!cmd)
+               goto unlock;
+
+       if (status)
+               mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               mgmt_status(status));
+       else
+               mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               0, NULL, 0);
+
+       mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
+int mgmt_set_rssi_threshold(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len)
+{
+       int err = 0;
+       struct hci_cp_set_rssi_threshold th = { 0, };
+       struct mgmt_cp_set_enable_rssi *cp = data;
+       struct hci_conn *conn;
+       struct mgmt_pending_cmd *cmd;
+       struct hci_request req;
+       __u8 dest_type;
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev);
+       if (!cmd) {
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_FAILED);
+               goto unlocked;
+       }
+
+       if (!lmp_le_capable(hdev)) {
+               mgmt_pending_remove(cmd);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_NOT_SUPPORTED);
+               goto unlocked;
+       }
+
+       if (!hdev_is_powered(hdev)) {
+               BT_DBG("%s", hdev->name);
+               mgmt_pending_remove(cmd);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_NOT_POWERED);
+               goto unlocked;
+       }
+
+       if (cp->link_type == 0x01)
+               dest_type = LE_LINK;
+       else
+               dest_type = ACL_LINK;
+
+       /* Get LE/ACL link handle info */
+       conn = hci_conn_hash_lookup_ba(hdev,
+                       dest_type, &cp->bdaddr);
+
+       if (!conn) {
+               err = mgmt_cmd_complete(sk, hdev->id,
+                               MGMT_OP_SET_RSSI_ENABLE, 1, NULL, 0);
+               mgmt_pending_remove(cmd);
+               goto unlocked;
+       }
+
+       hci_req_init(&req, hdev);
+
+       th.hci_le_ext_opcode = 0x0B;
+       th.mode = 0x01;
+       th.conn_handle = conn->handle;
+       th.alert_mask = 0x07;
+       th.low_th = cp->low_th;
+       th.in_range_th = cp->in_range_th;
+       th.high_th = cp->high_th;
+
+       hci_req_add(&req, HCI_OP_ENABLE_RSSI, sizeof(th), &th);
+       err = hci_req_run(&req, set_rssi_threshold_complete);
+
+       if (err < 0) {
+               mgmt_pending_remove(cmd);
+               BT_ERR("Error in requesting hci_req_run");
+               goto unlocked;
+       }
+
+unlocked:
+       hci_dev_unlock(hdev);
+       return err;
+}
+
+void mgmt_rssi_enable_success(struct sock *sk, struct hci_dev *hdev,
+               void *data, struct hci_cc_rsp_enable_rssi *rp, int success)
+{
+       struct mgmt_cc_rsp_enable_rssi mgmt_rp = { 0, };
+       struct mgmt_cp_set_enable_rssi *cp = data;
+       struct mgmt_pending_cmd *cmd;
+
+       if (!cp || !rp)
+               goto remove_cmd;
+
+       mgmt_rp.status = rp->status;
+       mgmt_rp.le_ext_opcode = rp->le_ext_opcode;
+       mgmt_rp.bt_address = cp->bdaddr;
+       mgmt_rp.link_type = cp->link_type;
+
+       mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                       MGMT_STATUS_SUCCESS, &mgmt_rp,
+                       sizeof(struct mgmt_cc_rsp_enable_rssi));
+
+       mgmt_event(MGMT_EV_RSSI_ENABLED, hdev, &mgmt_rp,
+                       sizeof(struct mgmt_cc_rsp_enable_rssi), NULL);
+
+       hci_conn_rssi_unset_all(hdev, mgmt_rp.link_type);
+       hci_conn_rssi_state_set(hdev, mgmt_rp.link_type,
+                       &mgmt_rp.bt_address, true);
+
+remove_cmd:
+       hci_dev_lock(hdev);
+       cmd = pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev);
+       if (cmd)
+               mgmt_pending_remove(cmd);
+
+       hci_dev_unlock(hdev);
+}
+
+void mgmt_rssi_disable_success(struct sock *sk, struct hci_dev *hdev,
+               void *data, struct hci_cc_rsp_enable_rssi *rp, int success)
+{
+       struct mgmt_cc_rp_disable_rssi mgmt_rp = { 0, };
+       struct mgmt_cp_disable_rssi *cp = data;
+       struct mgmt_pending_cmd *cmd;
+
+       if (!cp || !rp)
+               goto remove_cmd;
+
+       mgmt_rp.status = rp->status;
+       mgmt_rp.le_ext_opcode = rp->le_ext_opcode;
+       mgmt_rp.bt_address = cp->bdaddr;
+       mgmt_rp.link_type = cp->link_type;
+
+       mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                       MGMT_STATUS_SUCCESS, &mgmt_rp,
+                       sizeof(struct mgmt_cc_rsp_enable_rssi));
+
+       mgmt_event(MGMT_EV_RSSI_DISABLED, hdev, &mgmt_rp,
+                       sizeof(struct mgmt_cc_rsp_enable_rssi), NULL);
+
+       hci_conn_rssi_state_set(hdev, mgmt_rp.link_type,
+                       &mgmt_rp.bt_address, false);
+
+remove_cmd:
+       hci_dev_lock(hdev);
+       cmd = pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev);
+       if (cmd)
+               mgmt_pending_remove(cmd);
+
+       hci_dev_unlock(hdev);
+}
+
+static int mgmt_set_disable_rssi(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len)
+{
+       struct mgmt_pending_cmd *cmd;
+       struct hci_request req;
+       struct hci_cp_set_enable_rssi cp_en = { 0, };
+       int err;
+
+       BT_DBG("Set Disable RSSI.");
+
+       cp_en.hci_le_ext_opcode = 0x01;
+       cp_en.le_enable_cs_Features = 0x00;
+       cp_en.data[0] = 0x00;
+       cp_en.data[1] = 0x00;
+       cp_en.data[2] = 0x00;
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev);
+       if (!cmd) {
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               MGMT_STATUS_FAILED);
+               goto unlocked;
+       }
+
+       if (!lmp_le_capable(hdev)) {
+               mgmt_pending_remove(cmd);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               MGMT_STATUS_NOT_SUPPORTED);
+               goto unlocked;
+       }
+
+       if (!hdev_is_powered(hdev)) {
+               BT_DBG("%s", hdev->name);
+               mgmt_pending_remove(cmd);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               MGMT_STATUS_NOT_POWERED);
+               goto unlocked;
+       }
+
+       hci_req_init(&req, hdev);
+
+       BT_DBG("Enable Len: %zu [%2.2X %2.2X %2.2X %2.2X %2.2X]",
+                       sizeof(struct hci_cp_set_enable_rssi),
+                       cp_en.hci_le_ext_opcode, cp_en.le_enable_cs_Features,
+                       cp_en.data[0], cp_en.data[1], cp_en.data[2]);
+
+       hci_req_add(&req, HCI_OP_ENABLE_RSSI, sizeof(cp_en), &cp_en);
+       err = hci_req_run(&req, set_rssi_disable_complete);
+
+       if (err < 0) {
+               mgmt_pending_remove(cmd);
+               BT_ERR("Error in requesting hci_req_run");
+               goto unlocked;
+       }
+
+unlocked:
+       hci_dev_unlock(hdev);
+       return err;
+}
+
+void mgmt_enable_rssi_cc(struct hci_dev *hdev, void *response, u8 status)
+{
+       struct hci_cc_rsp_enable_rssi *rp = response;
+       struct mgmt_pending_cmd *cmd_enable = NULL;
+       struct mgmt_pending_cmd *cmd_disable = NULL;
+       struct mgmt_cp_set_enable_rssi *cp_en;
+       struct mgmt_cp_disable_rssi *cp_dis;
+
+       hci_dev_lock(hdev);
+       cmd_enable = pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev);
+       cmd_disable = pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev);
+       hci_dev_unlock(hdev);
+
+       if (cmd_enable)
+               BT_DBG("Enable Request");
+
+       if (cmd_disable)
+               BT_DBG("Disable Request");
+
+       if (cmd_enable) {
+               cp_en = cmd_enable->param;
+
+               if (status != 0x00)
+                       return;
+
+               switch (rp->le_ext_opcode) {
+               case 0x01:
+                       BT_DBG("RSSI enabled.. Setting Threshold...");
+                       mgmt_set_rssi_threshold(cmd_enable->sk, hdev,
+                                       cp_en, sizeof(*cp_en));
+                       break;
+
+               case 0x0B:
+                       BT_DBG("Sending RSSI enable success");
+                       mgmt_rssi_enable_success(cmd_enable->sk, hdev,
+                                       cp_en, rp, rp->status);
+                       break;
+               }
+
+       } else if (cmd_disable) {
+               cp_dis = cmd_disable->param;
+
+               if (status != 0x00)
+                       return;
+
+               switch (rp->le_ext_opcode) {
+               case 0x01:
+                       BT_DBG("Sending RSSI disable success");
+                       mgmt_rssi_disable_success(cmd_disable->sk, hdev,
+                                       cp_dis, rp, rp->status);
+                       break;
+
+               case 0x0B:
+                       /*
+                        * Only unset RSSI Threshold values for the Link if
+                        * RSSI is monitored for other BREDR or LE Links
+                        */
+                       if (hci_conn_hash_lookup_rssi_count(hdev) > 1) {
+                               BT_DBG("Unset Threshold. Other links being monitored");
+                               mgmt_rssi_disable_success(cmd_disable->sk, hdev,
+                                               cp_dis, rp, rp->status);
+                       } else {
+                               BT_DBG("Unset Threshold. Disabling...");
+                               mgmt_set_disable_rssi(cmd_disable->sk, hdev,
+                                               cp_dis, sizeof(*cp_dis));
+                       }
+                       break;
+               }
+       }
+}
+
+static void set_rssi_enable_complete(struct hci_dev *hdev, u8 status,
+               u16 opcode)
+{
+       struct mgmt_pending_cmd *cmd;
+
+       BT_DBG("status 0x%02x", status);
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev);
+       if (!cmd)
+               goto unlock;
+
+       if (status)
+               mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               mgmt_status(status));
+       else
+               mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE, 0,
+                               NULL, 0);
+
+       mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
+static int set_enable_rssi(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len)
+{
+       struct mgmt_pending_cmd *cmd;
+       struct hci_request req;
+       struct mgmt_cp_set_enable_rssi *cp = data;
+       struct hci_cp_set_enable_rssi cp_en = { 0, };
+       int err;
+
+       BT_DBG("Set Enable RSSI.");
+
+       cp_en.hci_le_ext_opcode = 0x01;
+       cp_en.le_enable_cs_Features = 0x04;
+       cp_en.data[0] = 0x00;
+       cp_en.data[1] = 0x00;
+       cp_en.data[2] = 0x00;
+
+       hci_dev_lock(hdev);
+
+       if (!lmp_le_capable(hdev)) {
+               err =  mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_NOT_SUPPORTED);
+               goto unlocked;
+       }
+
+       if (!hdev_is_powered(hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_NOT_POWERED);
+               goto unlocked;
+       }
+
+       if (pending_find(MGMT_OP_SET_RSSI_ENABLE, hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_ENABLE,
+                               MGMT_STATUS_BUSY);
+               goto unlocked;
+       }
+
+       cmd = mgmt_pending_add(sk, MGMT_OP_SET_RSSI_ENABLE, hdev, cp,
+                       sizeof(*cp));
+       if (!cmd) {
+               BT_DBG("%s", hdev->name);
+               err = -ENOMEM;
+               goto unlocked;
+       }
+
+       /* If RSSI is already enabled directly set Threshold values */
+       if (hci_conn_hash_lookup_rssi_count(hdev) > 0) {
+               hci_dev_unlock(hdev);
+               BT_DBG("RSSI Enabled. Directly set Threshold");
+               err = mgmt_set_rssi_threshold(sk, hdev, cp, sizeof(*cp));
+               return err;
+       }
+
+       hci_req_init(&req, hdev);
+
+       BT_DBG("Enable Len: %zu [%2.2X %2.2X %2.2X %2.2X %2.2X]",
+                       sizeof(struct hci_cp_set_enable_rssi),
+                       cp_en.hci_le_ext_opcode, cp_en.le_enable_cs_Features,
+                       cp_en.data[0], cp_en.data[1], cp_en.data[2]);
+
+       hci_req_add(&req, HCI_OP_ENABLE_RSSI, sizeof(cp_en), &cp_en);
+       err = hci_req_run(&req, set_rssi_enable_complete);
+
+       if (err < 0) {
+               mgmt_pending_remove(cmd);
+               BT_ERR("Error in requesting hci_req_run");
+               goto unlocked;
+       }
+
+unlocked:
+       hci_dev_unlock(hdev);
+
+       return err;
+}
+
+static void get_raw_rssi_complete(struct hci_dev *hdev, u8 status, u16 opcode)
+{
+       struct mgmt_pending_cmd *cmd;
+
+       BT_DBG("status 0x%02x", status);
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_GET_RAW_RSSI, hdev);
+       if (!cmd)
+               goto unlock;
+
+       mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_GET_RAW_RSSI,
+                       MGMT_STATUS_SUCCESS, &status, 1);
+
+       mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
+static int get_raw_rssi(struct sock *sk, struct hci_dev *hdev, void *data,
+                       u16 len)
+{
+       struct mgmt_pending_cmd *cmd;
+       struct hci_request req;
+       struct mgmt_cp_get_raw_rssi *cp = data;
+       struct hci_cp_get_raw_rssi hci_cp;
+
+       struct hci_conn *conn;
+       int err;
+       __u8 dest_type;
+
+       BT_DBG("Get Raw RSSI.");
+
+       hci_dev_lock(hdev);
+
+       if (!lmp_le_capable(hdev)) {
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_RAW_RSSI,
+                               MGMT_STATUS_NOT_SUPPORTED);
+               goto unlocked;
+       }
+
+       if (cp->link_type == 0x01)
+               dest_type = LE_LINK;
+       else
+               dest_type = ACL_LINK;
+
+       /* Get LE/BREDR link handle info */
+       conn = hci_conn_hash_lookup_ba(hdev,
+                       dest_type, &cp->bt_address);
+       if (!conn) {
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_RAW_RSSI,
+                                                  MGMT_STATUS_NOT_CONNECTED);
+               goto unlocked;
+       }
+       hci_cp.conn_handle = conn->handle;
+
+       if (!hdev_is_powered(hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_RAW_RSSI,
+                               MGMT_STATUS_NOT_POWERED);
+               goto unlocked;
+       }
+
+       if (pending_find(MGMT_OP_GET_RAW_RSSI, hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_RAW_RSSI,
+                               MGMT_STATUS_BUSY);
+               goto unlocked;
+       }
+
+       cmd = mgmt_pending_add(sk, MGMT_OP_GET_RAW_RSSI, hdev, data, len);
+       if (!cmd) {
+               BT_DBG("%s", hdev->name);
+               err = -ENOMEM;
+               goto unlocked;
+       }
+
+       hci_req_init(&req, hdev);
+
+       BT_DBG("Connection Handle [%d]", hci_cp.conn_handle);
+       hci_req_add(&req, HCI_OP_GET_RAW_RSSI, sizeof(hci_cp), &hci_cp);
+       err = hci_req_run(&req, get_raw_rssi_complete);
+
+       if (err < 0) {
+               mgmt_pending_remove(cmd);
+               BT_ERR("Error in requesting hci_req_run");
+       }
+
+unlocked:
+       hci_dev_unlock(hdev);
+
+       return err;
+}
+
+void mgmt_raw_rssi_response(struct hci_dev *hdev,
+               struct hci_cc_rp_get_raw_rssi *rp, int success)
+{
+       struct mgmt_cc_rp_get_raw_rssi mgmt_rp = { 0, };
+       struct hci_conn *conn;
+
+       mgmt_rp.status = rp->status;
+       mgmt_rp.rssi_dbm = rp->rssi_dbm;
+
+       conn = hci_conn_hash_lookup_handle(hdev, rp->conn_handle);
+       if (!conn)
+               return;
+
+       bacpy(&mgmt_rp.bt_address, &conn->dst);
+       if (conn->type == LE_LINK)
+               mgmt_rp.link_type = 0x01;
+       else
+               mgmt_rp.link_type = 0x00;
+
+       mgmt_event(MGMT_EV_RAW_RSSI, hdev, &mgmt_rp,
+                       sizeof(struct mgmt_cc_rp_get_raw_rssi), NULL);
+}
+
+static void set_disable_threshold_complete(struct hci_dev *hdev,
+                       u8 status, u16 opcode)
+{
+       struct mgmt_pending_cmd *cmd;
+
+       BT_DBG("status 0x%02x", status);
+
+       hci_dev_lock(hdev);
+
+       cmd = pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev);
+       if (!cmd)
+               goto unlock;
+
+       mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                       MGMT_STATUS_SUCCESS, &status, 1);
+
+       mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
+/** Removes monitoring for a link*/
+static int set_disable_threshold(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len)
+{
+       int err = 0;
+       struct hci_cp_set_rssi_threshold th = { 0, };
+       struct mgmt_cp_disable_rssi *cp = data;
+       struct hci_conn *conn;
+       struct mgmt_pending_cmd *cmd;
+       struct hci_request req;
+       __u8 dest_type;
+
+       BT_DBG("Set Disable RSSI.");
+
+       hci_dev_lock(hdev);
+
+       if (!lmp_le_capable(hdev)) {
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               MGMT_STATUS_NOT_SUPPORTED);
+               goto unlocked;
+       }
+
+       /* Get LE/ACL link handle info*/
+       if (cp->link_type == 0x01)
+               dest_type = LE_LINK;
+       else
+               dest_type = ACL_LINK;
+
+       conn = hci_conn_hash_lookup_ba(hdev, dest_type, &cp->bdaddr);
+       if (!conn) {
+               err = mgmt_cmd_complete(sk, hdev->id,
+                               MGMT_OP_SET_RSSI_DISABLE, 1, NULL, 0);
+               goto unlocked;
+       }
+
+       th.hci_le_ext_opcode = 0x0B;
+       th.mode = 0x01;
+       th.conn_handle = conn->handle;
+       th.alert_mask = 0x00;
+       th.low_th = 0x00;
+       th.in_range_th = 0x00;
+       th.high_th = 0x00;
+
+       if (!hdev_is_powered(hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               0, data, len);
+               goto unlocked;
+       }
+
+       if (pending_find(MGMT_OP_SET_RSSI_DISABLE, hdev)) {
+               BT_DBG("%s", hdev->name);
+               err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_RSSI_DISABLE,
+                               MGMT_STATUS_BUSY);
+               goto unlocked;
+       }
+
+       cmd = mgmt_pending_add(sk, MGMT_OP_SET_RSSI_DISABLE, hdev, cp,
+                       sizeof(*cp));
+       if (!cmd) {
+               BT_DBG("%s", hdev->name);
+               err = -ENOMEM;
+               goto unlocked;
+       }
+
+       hci_req_init(&req, hdev);
+
+       hci_req_add(&req, HCI_OP_ENABLE_RSSI, sizeof(th), &th);
+       err = hci_req_run(&req, set_disable_threshold_complete);
+       if (err < 0) {
+               mgmt_pending_remove(cmd);
+               BT_ERR("Error in requesting hci_req_run");
+               goto unlocked;
+       }
+
+unlocked:
+       hci_dev_unlock(hdev);
+
+       return err;
+}
+
+void mgmt_rssi_alert_evt(struct hci_dev *hdev, struct sk_buff *skb)
+{
+       struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
+       struct mgmt_ev_vendor_specific_rssi_alert mgmt_ev;
+       struct hci_conn *conn;
+
+       BT_DBG("RSSI alert [%2.2X %2.2X %2.2X]",
+                       ev->conn_handle, ev->alert_type, ev->rssi_dbm);
+
+       conn = hci_conn_hash_lookup_handle(hdev, ev->conn_handle);
+
+       if (!conn) {
+               BT_ERR("RSSI alert Error: Device not found for handle");
+               return;
+       }
+       bacpy(&mgmt_ev.bdaddr, &conn->dst);
+
+       if (conn->type == LE_LINK)
+               mgmt_ev.link_type = 0x01;
+       else
+               mgmt_ev.link_type = 0x00;
+
+       mgmt_ev.alert_type = ev->alert_type;
+       mgmt_ev.rssi_dbm = ev->rssi_dbm;
+
+       mgmt_event(MGMT_EV_RSSI_ALERT, hdev, &mgmt_ev,
+                       sizeof(struct mgmt_ev_vendor_specific_rssi_alert),
+                       NULL);
+}
 #endif /* TIZEN_BT */
 
 static bool ltk_is_valid(struct mgmt_ltk_info *key)
@@ -7394,6 +8077,9 @@ static const struct hci_mgmt_handler tizen_mgmt_handlers[] = {
        { add_white_list,          MGMT_ADD_DEV_WHITE_LIST_SIZE },
        { remove_from_white_list,  MGMT_REMOVE_DEV_FROM_WHITE_LIST_SIZE },
        { clear_white_list,        MGMT_OP_CLEAR_DEV_WHITE_LIST_SIZE },
+       { set_enable_rssi,         MGMT_SET_RSSI_ENABLE_SIZE },
+       { get_raw_rssi,            MGMT_GET_RAW_RSSI_SIZE },
+       { set_disable_threshold,   MGMT_SET_RSSI_DISABLE_SIZE },
 };
 #endif