Bluetooth: Send transport open and close monitor events

When the core starts or shuts down the actual HCI transport, send a new
monitor event that indicates that this is happening. These new events
correspond to HCI_DEV_OPEN and HCI_DEV_CLOSE events.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_mon.h b/include/net/bluetooth/hci_mon.h
index 77d1e5764185..37e4283d1d68 100644
--- a/include/net/bluetooth/hci_mon.h
+++ b/include/net/bluetooth/hci_mon.h
@@ -39,6 +39,8 @@ struct hci_mon_hdr {
 #define HCI_MON_ACL_RX_PKT      5
 #define HCI_MON_SCO_TX_PKT      6
 #define HCI_MON_SCO_RX_PKT      7
+#define HCI_MON_OPEN_INDEX      8
+#define HCI_MON_CLOSE_INDEX     9
 
 struct hci_mon_new_index {
         __u8            type;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index d9ad68448173..64ebe84989d1 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -329,6 +329,22 @@ static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
                 opcode = cpu_to_le16(HCI_MON_DEL_INDEX);
                 break;
 
+        case HCI_DEV_OPEN:
+                skb = bt_skb_alloc(0, GFP_ATOMIC);
+                if (!skb)
+                        return NULL;
+
+                opcode = cpu_to_le16(HCI_MON_OPEN_INDEX);
+                break;
+
+        case HCI_DEV_CLOSE:
+                skb = bt_skb_alloc(0, GFP_ATOMIC);
+                if (!skb)
+                        return NULL;
+
+                opcode = cpu_to_le16(HCI_MON_CLOSE_INDEX);
+                break;
+
         default:
                 return NULL;
         }
@@ -358,6 +374,16 @@ static void send_monitor_replay(struct sock *sk)
 
                 if (sock_queue_rcv_skb(sk, skb))
                         kfree_skb(skb);
+
+                if (!test_bit(HCI_RUNNING, &hdev->flags))
+                        continue;
+
+                skb = create_monitor_event(hdev, HCI_DEV_OPEN);
+                if (!skb)
+                        continue;
+
+                if (sock_queue_rcv_skb(sk, skb))
+                        kfree_skb(skb);
         }
 
         read_unlock(&hci_dev_list_lock);