[PATCH] Bluetooth: Terminate the link if pairing is cancelled

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If user decides to cancel ongoing pairing process (e.g. by clicking
the cancel button on the pairing/passkey window), abort any ongoing
pairing and then terminate the link.

Signed-off-by: Manish Mandlik <mmandlik@xxxxxxxxxx>
---
Hello Linux-Bluetooth,

  This patch aborts any ongoing pairing and then terminates the link
  by calling hci_abort_conn() in cancel_pair_device() function.

  However, I'm not very sure if hci_abort_conn() should be called here
  in cancel_pair_device() or in smp for example to terminate the link
  after it had sent the pairing failed PDU.

  Please share your thoughts on this.

Thanks and regards,
Manish.

 net/bluetooth/mgmt.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 6552003a170eb..1aaa44282af4f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3030,6 +3030,18 @@ static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 
 	err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
 				addr, sizeof(*addr));
+
+	/* Since user doesn't want to proceed with the connection,
+	 * abort any ongoing pairing and then terminate the link.
+	 */
+	if (addr->type == BDADDR_BREDR)
+		hci_remove_link_key(hdev, &addr->bdaddr);
+	else
+		smp_cancel_and_remove_pairing(hdev, &addr->bdaddr,
+					      le_addr_type(addr->type));
+
+	hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+
 unlock:
 	hci_dev_unlock(hdev);
 	return err;
-- 
2.26.0.110.g2183baf09c-goog




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