Bluetooth: Add support for Start Limited Discovery command

This patch implements the mgmt Start Limited Discovery command. Most
of existing Start Discovery code is reused since the only difference
is the presence of a 'limited' flag as part of the discovery state.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 9997c31ef987..41b5f3813f02 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1737,8 +1737,8 @@ static int le_scan_disable(struct hci_request *req, unsigned long opt)
 static int bredr_inquiry(struct hci_request *req, unsigned long opt)
 {
         u8 length = opt;
-        /* General inquiry access code (GIAC) */
-        u8 lap[3] = { 0x33, 0x8b, 0x9e };
+        const u8 giac[3] = { 0x33, 0x8b, 0x9e };
+        const u8 liac[3] = { 0x00, 0x8b, 0x9e };
         struct hci_cp_inquiry cp;
 
         BT_DBG("%s", req->hdev->name);
@@ -1748,7 +1748,12 @@ static int bredr_inquiry(struct hci_request *req, unsigned long opt)
         hci_dev_unlock(req->hdev);
 
         memset(&cp, 0, sizeof(cp));
-        memcpy(&cp.lap, lap, sizeof(cp.lap));
+
+        if (req->hdev->discovery.limited)
+                memcpy(&cp.lap, liac, sizeof(cp.lap));
+        else
+                memcpy(&cp.lap, giac, sizeof(cp.lap));
+
         cp.length = length;
 
         hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);