Bluetooth: Add support for management powered event

This patch adds support for the powered event that's used to indicate to
userspace when the powered state of a local adapter changes.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

4 files changed, 21 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 75c4f201c1c6..32e11b37ef28 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -673,6 +673,7 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 int mgmt_index_added(u16 index);
 int mgmt_index_removed(u16 index);
+int mgmt_powered(u16 index, u8 powered);
 
 /* HCI info for socket */
 #define hci_pi(sk) ((struct hci_pinfo *) sk)
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index ca29c1367ffd..0ac1520573ed 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -85,3 +85,9 @@ struct mgmt_ev_index_added {
 struct mgmt_ev_index_removed {
         __le16 index;
 } __packed;
+
+#define MGMT_EV_POWERED                 0x0006
+struct mgmt_ev_powered {
+        __le16 index;
+        __u8 powered;
+} __packed;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b22ce9f8bf91..c5a78e797bc2 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -535,6 +535,8 @@ int hci_dev_open(__u16 dev)
                 hci_dev_hold(hdev);
                 set_bit(HCI_UP, &hdev->flags);
                 hci_notify(hdev, HCI_DEV_UP);
+                if (!test_bit(HCI_SETUP, &hdev->flags))
+                        mgmt_powered(hdev->id, 1);
         } else {
                 /* Init failed, cleanup */
                 tasklet_kill(&hdev->rx_task);
@@ -616,6 +618,8 @@ static int hci_dev_do_close(struct hci_dev *hdev)
          * and no tasks are scheduled. */
         hdev->close(hdev);
 
+        mgmt_powered(hdev->id, 0);
+
         /* Clear flags */
         hdev->flags = 0;
 
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index d479e241a9de..f746e19ebec0 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -316,3 +316,13 @@ int mgmt_index_removed(u16 index)
 
         return mgmt_event(MGMT_EV_INDEX_REMOVED, &ev, sizeof(ev));
 }
+
+int mgmt_powered(u16 index, u8 powered)
+{
+        struct mgmt_ev_powered ev;
+
+        put_unaligned_le16(index, &ev.index);
+        ev.powered = powered;
+
+        return mgmt_event(MGMT_EV_POWERED, &ev, sizeof(ev));
+}