This patch adds LE-Only discovery procedure support to MGMT Start
Discovery command.
Signed-off-by: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
---
net/bluetooth/mgmt.c | 23 +++++++++++++++++++++--
1 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e7bbad8..05e6c1f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -35,7 +35,16 @@
#define MGMT_VERSION 0
#define MGMT_REVISION 1
-#define INQUIRY_LEN_BREDR 0x08 /* TGAP(100) */
+/*
+ * 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) */
#define SERVICE_CACHE_TIMEOUT (5 * 1000)
@@ -1895,6 +1904,7 @@ static int start_discovery(struct sock *sk, u16 index,
unsigned char *data, u16 len)
{
struct mgmt_cp_start_discovery *cp = (void *) data;
+ unsigned long discov_type = cp->type;
struct pending_cmd *cmd;
struct hci_dev *hdev;
int err;
@@ -1930,7 +1940,16 @@ static int start_discovery(struct sock *sk, u16 index,
goto failed;
}
- err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
+ if (test_bit(MGMT_ADDR_BREDR, &discov_type))
+ err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
+ else if (test_bit(MGMT_ADDR_LE_PUBLIC, &discov_type) &&
+ test_bit(MGMT_ADDR_LE_RANDOM, &discov_type))
+ err = hci_do_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT,
+ LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
+ else
+ err = cmd_status(sk, index, MGMT_OP_START_DISCOVERY,
+ MGMT_STATUS_NOT_SUPPORTED);
+
if (err < 0)
mgmt_pending_remove(cmd);
else
--
1.7.8.1
--
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