Bluetooth: Introduce force_bredr_smp debugfs option for testing

Testing cross-transport pairing that starts on BR/EDR is only valid when using a controller with BR/EDR Secure Connections. Devices will indicate this by providing BR/EDR SMP fixed channel over L2CAP. To allow testing of this feature on Bluetooth 4.0 controller or controllers without the BR/EDR Secure Connections features, introduce a force_bredr_smp debugfs option that allows faking the required AES connection.

---
 include/net/bluetooth/hci.h |  1 +
 net/bluetooth/l2cap_core.c  |  2 +-
 net/bluetooth/smp.c         | 78 ++++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 76 insertions(+), 5 deletions(-)

index 1849a437f6e1..fddb93f168b8 100644
@@ -174,6 +174,7 @@ enum {
 	HCI_DUT_MODE,
 	HCI_FORCE_SC,
 	HCI_FORCE_LESC,
+	HCI_FORCE_BREDR_SMP,
 	HCI_FORCE_STATIC_ADDR,
 };
 

index d04dc0095736..11029b212874 100644
@@ -6968,7 +6968,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
 
 	if (test_bit(HCI_LE_ENABLED, &hcon->hdev->dev_flags) &&
 	    (bredr_sc_enabled(hcon->hdev) ||
-	     test_bit(HCI_FORCE_LESC, &hcon->hdev->dbg_flags)))
+	     test_bit(HCI_FORCE_BREDR_SMP, &hcon->hdev->dbg_flags)))
 		conn->local_fixed_chan |= L2CAP_FC_SMP_BREDR;
 
 	mutex_init(&conn->ident_lock);

2.1.0

Hi Marcel,

All four patches in this set have been applied to bluetooth-next. Thanks.

Johan