This patch adds support for LE-Only discovery procedure through
management interface.
Signed-off-by: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
---
net/bluetooth/hci_event.c | 16 +++++++++++++---
net/bluetooth/mgmt.c | 14 +++++++++++++-
2 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 841501c..5b99058 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -889,14 +889,16 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
BT_DBG("%s status 0x%x", hdev->name, status);
- if (status)
- return;
-
cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
if (!cp)
return;
if (cp->enable == 0x01) {
+ if (status) {
+ mgmt_discovery_complete(hdev->id, status);
+ return;
+ }
+
set_bit(HCI_LE_SCAN, &hdev->flags);
mgmt_discovering(hdev->id, 1);
@@ -906,7 +908,15 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
hci_dev_lock(hdev);
hci_adv_entries_clear(hdev);
hci_dev_unlock(hdev);
+
+ if (mgmt_has_pending_stop_discov(hdev->id))
+ hci_cancel_le_scan(hdev);
} else if (cp->enable == 0x00) {
+ mgmt_discovery_complete(hdev->id, status);
+
+ if (status)
+ return;
+
clear_bit(HCI_LE_SCAN, &hdev->flags);
mgmt_discovering(hdev->id, 0);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0b08e29..685519b 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -32,6 +32,15 @@
#define MGMT_VERSION 0
#define MGMT_REVISION 1
+/*
+ * These LE scan and inquiry parameters were chosen according to LE General
+ * Discovery Procedure specification.
+ */
+#define LE_SCAN_TYPE 0x01
+#define LE_SCAN_WIN 0x12
+#define LE_SCAN_INT 0x12
+#define LE_SCAN_TIMEOUT_LE_ONLY 10240 /* TGAP(gen_disc_scan_min) */
+
#define INQUIRY_LEN_BREDR 0x08 /* TGAP(100) */
struct pending_cmd {
@@ -1638,7 +1647,8 @@ static int start_discovery(struct sock *sk, u16 index)
if (lmp_bredr_capable(hdev))
err = -ENOSYS;
else
- err = -ENOSYS;
+ err = hci_do_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT,
+ LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
} else {
err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
}
@@ -1686,6 +1696,8 @@ static int stop_discovery(struct sock *sk, u16 index)
if (test_bit(HCI_INQUIRY, &hdev->flags))
err = hci_cancel_inquiry(hdev);
+ else if (test_bit(HCI_LE_SCAN, &hdev->flags))
+ err = hci_cancel_le_scan(hdev);
else
err = 0;
--
1.7.5.2
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