Bluetooth: Add dev_flags to struct hci_dev

This patch adds the dev_flags field to struct hci_dev. This new
flags variable should be used to define flags related to BR/EDR
and/or LE controller itself. It should be used to define flags
which represents states from the controller. The dev_flags is
cleared in case the controller sends a Reset Command Complete
Event to the host.

Also, this patch adds the HCI_LE_SCAN flag which was created to
track if the controller is performing LE scan or not. The flag
is set/cleared when the controller starts/stops scanning.

This is an initial effort to stop using hdev->flags to define
internal flags since it is exported to userspace by an ioctl.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

4 files changed, 17 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index ee83c36d35aa..e2ed3683f1c5 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -88,6 +88,14 @@ enum {
         HCI_RESET,
 };
 
+/*
+ * BR/EDR and/or LE controller flags: the flags defined here should represent
+ * states from the controller.
+ */
+enum {
+        HCI_LE_SCAN,
+};
+
 /* HCI ioctl defines */
 #define HCIDEVUP        _IOW('H', 201, int)
 #define HCIDEVDOWN      _IOW('H', 202, int)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 44f130f6fb5e..e34cd71a586e 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -252,6 +252,8 @@ struct hci_dev {
 
         struct module           *owner;
 
+        unsigned long           dev_flags;
+
         int (*open)(struct hci_dev *hdev);
         int (*close)(struct hci_dev *hdev);
         int (*flush)(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ef0423e62a22..dcbe1d29bb8e 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1458,6 +1458,7 @@ int hci_register_dev(struct hci_dev *hdev)
         spin_lock_init(&hdev->lock);
 
         hdev->flags = 0;
+        hdev->dev_flags = 0;
         hdev->pkt_type  = (HCI_DM1 | HCI_DH1 | HCI_HV1);
         hdev->esco_type = (ESCO_HV1);
         hdev->link_mode = (HCI_LM_ACCEPT);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ab4922831b9a..acbdfbeeb920 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -194,6 +194,8 @@ static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
         clear_bit(HCI_RESET, &hdev->flags);
 
         hci_req_complete(hdev, HCI_OP_RESET, status);
+
+        hdev->dev_flags = 0;
 }
 
 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
@@ -1006,12 +1008,16 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
                 return;
 
         if (cp->enable == 0x01) {
+                set_bit(HCI_LE_SCAN, &hdev->dev_flags);
+
                 del_timer(&hdev->adv_timer);
 
                 hci_dev_lock(hdev);
                 hci_adv_entries_clear(hdev);
                 hci_dev_unlock(hdev);
         } else if (cp->enable == 0x00) {
+                clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
+
                 mod_timer(&hdev->adv_timer, jiffies + ADV_CLEAR_TIMEOUT);
         }
 }