This patch adds support for BR/EDR/LE discovery procedure through
management interface.
Signed-off-by: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 2 ++
net/bluetooth/hci_event.c | 8 +++++++-
net/bluetooth/mgmt.c | 38 +++++++++++++++++++++++++++++++++++++-
3 files changed, 46 insertions(+), 2 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 5e78c45..9e5736b 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -866,6 +866,8 @@ int mgmt_stop_discovery_complete(u16 index);
int mgmt_stop_discovery_failed(u16 index, u8 status);
int mgmt_has_pending_stop_discov(u16 index);
int mgmt_cancel_discovery(u16 index);
+int mgmt_is_interleaved_discovery(u16 index);
+int mgmt_do_interleaved_discovery(u16 index);
/* HCI info for socket */
#define hci_pi(sk) ((struct hci_pinfo *) sk)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 08774c2..55872ff 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -913,7 +913,8 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
goto unlock;
}
- mgmt_discovering(hdev->id, 1);
+ if (!mgmt_is_interleaved_discovery(hdev->id))
+ mgmt_discovering(hdev->id, 1);
} else if (cp->enable == 0x00) {
if (status) {
if (mgmt_has_pending_stop_discov(hdev->id))
@@ -1393,6 +1394,11 @@ static inline void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff
hci_req_complete(hdev, HCI_OP_INQUIRY, status);
+ if (mgmt_is_interleaved_discovery(hdev->id)) {
+ mgmt_do_interleaved_discovery(hdev->id);
+ return;
+ }
+
mgmt_discovering(hdev->id, 0);
hci_dev_lock(hdev);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index dcfc66f..f2d9078 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -40,6 +40,8 @@ enum bt_device_type {
};
#define BREDR_ONLY_INQ_LENGTH 0x08 /* TGAP(100) */
+#define BREDR_LE_INQ_LENGTH 0x04 /* TGAP(100)/2 */
+#define BREDR_LE_SCAN_TIMEOUT 5120 /* TGAP(100)/2 */
#define LE_ONLY_SCAN_TIMEOUT 10240 /* TGAP(gen_disc_scan_min) */
struct pending_cmd {
@@ -1731,7 +1733,7 @@ static int start_discovery(struct sock *sk, u16 index)
err = do_le_scan(hdev, LE_ONLY_SCAN_TIMEOUT);
break;
case BREDR_LE:
- err = -ENOSYS;
+ err = do_inquiry(hdev, BREDR_LE_INQ_LENGTH);
break;
default:
err = -EINVAL;
@@ -2512,3 +2514,37 @@ int mgmt_has_pending_stop_discov(u16 index)
return 0;
}
+
+int mgmt_is_interleaved_discovery(u16 index)
+{
+ struct hci_dev *hdev;
+ int res = 0;
+
+ hdev = hci_dev_get(index);
+
+ if (get_device_type(hdev) == BREDR_LE &&
+ mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev->id))
+ res = 1;
+
+ hci_dev_put(hdev);
+
+ return res;
+}
+
+int mgmt_do_interleaved_discovery(u16 index)
+{
+ struct hci_dev *hdev;
+ int err;
+
+ hdev = hci_dev_get(index);
+
+ err = do_le_scan(hdev, BREDR_LE_SCAN_TIMEOUT);
+ if (err < 0) {
+ mgmt_discovering(hdev->id, 0);
+ mgmt_start_discovery_failed(hdev->id, err);
+ }
+
+ hci_dev_put(hdev);
+
+ return err;
+}
--
1.7.4.1
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