Bluetooth: Add support for mode 0x02 for mgmt_set_debug_keys

This patch adds a new valid mode 0x02 for the mgmt_set_debug_keys
command. The 0x02 mode sets the HCI_USE_DEBUG_KEYS flag which makes us
always use debug keys for pairing.

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

1 files changed, 16 insertions, 2 deletions

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 69afbb2df133..f75a090cd7e4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4349,12 +4349,12 @@ static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
                           void *data, u16 len)
 {
         struct mgmt_mode *cp = data;
-        bool changed;
+        bool changed, use_changed;
         int err;
 
         BT_DBG("request for %s", hdev->name);
 
-        if (cp->val != 0x00 && cp->val != 0x01)
+        if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
                 return cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
                                   MGMT_STATUS_INVALID_PARAMS);
 
@@ -4367,6 +4367,20 @@ static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
                 changed = test_and_clear_bit(HCI_KEEP_DEBUG_KEYS,
                                              &hdev->dev_flags);
 
+        if (cp->val == 0x02)
+                use_changed = !test_and_set_bit(HCI_USE_DEBUG_KEYS,
+                                                &hdev->dev_flags);
+        else
+                use_changed = test_and_clear_bit(HCI_USE_DEBUG_KEYS,
+                                                 &hdev->dev_flags);
+
+        if (hdev_is_powered(hdev) && use_changed &&
+            test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
+                u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
+                hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
+                             sizeof(mode), &mode);
+        }
+
         err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
         if (err < 0)
                 goto unlock;