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Bluetooth: Fix issue with switching BR/EDR back on when disabled 

For dual-mode controllers it is possible to disable BR/EDR and operate
as LE single mode controllers with a static random address. If that is
the case, then refuse switching BR/EDR back on after the controller has
been powered.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2015-01-14 14:40:42 -08:00 committed by Johan Hedberg
parent eeb5a067d1
commit 111e4bccd1
1 changed files with 15 additions and 0 deletions
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15
net/bluetooth/mgmt.c
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@ -4683,6 +4683,21 @@ static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
err = cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
MGMT_STATUS_REJECTED);
goto unlock;
} else {
/* When configuring a dual-mode controller to operate
* with LE only and using a static address, then switching
* BR/EDR back on is not allowed.
*
* Dual-mode controllers shall operate with the public
* address as its identity address for BR/EDR and LE. So
* reject the attempt to create an invalid configuration.
*/
if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags) &&
bacmp(&hdev->static_addr, BDADDR_ANY)) {
err = cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
MGMT_STATUS_REJECTED);
goto unlock;
}
}
if (mgmt_pending_find(MGMT_OP_SET_BREDR, hdev)) {