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Bluetooth: Don't bother user space without IO capabilities

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If user space has a NoInputNoOutput IO capability it makes no sense to
bother it with confirmation requests. This patch updates both SSP and
SMP to check for the local IO capability before sending a user
confirmation request to user space.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-07-16 15:09:13 +03:00 committed by Marcel Holtmann
parent 9f743d7499
commit 02f3e25457
2 changed files with 7 additions and 1 deletions
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4
net/bluetooth/hci_event.c
View file

@ -3752,9 +3752,11 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev,
/* If we're not the initiators request authorization to
* proceed from user space (mgmt_user_confirm with
* confirm_hint set to 1). The exception is if neither
* side had MITM in which case we do auto-accept.
* side had MITM or if the local IO capability is
* NoInputNoOutput, in which case we do auto-accept
*/
if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
(loc_mitm || rem_mitm)) {
BT_DBG("Confirming auto-accept as acceptor");
confirm_hint = 1;

4
net/bluetooth/smp.c
View file

@ -431,6 +431,10 @@ static int tk_request(struct l2cap_conn *conn, u8 remote_oob, u8 auth,
if (method == JUST_CFM && test_bit(SMP_FLAG_INITIATOR, &smp->flags))
method = JUST_WORKS;
/* Don't bother user space with no IO capabilities */
if (method == JUST_CFM && hcon->io_capability == HCI_IO_NO_INPUT_OUTPUT)
method = JUST_WORKS;
/* If Just Works, Continue with Zero TK */
if (method == JUST_WORKS) {
set_bit(SMP_FLAG_TK_VALID, &smp->flags);