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Bluetooth: Fix requiring SMP MITM for outgoing connections 

Due to recent changes to the way that the MITM requirement is set for
outgoing pairing attempts we can no longer rely on the hcon->auth_type
variable (which is actually good since it was formed from BR/EDR
concepts that don't really exist for SMP).

To match the logic that BR/EDR now uses simply rely on the local IO
capability and/or needed security level to set the MITM requirement for
outgoing pairing requests.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Johan Hedberg 2014-06-01 09:45:24 +03:00 committed by Marcel Holtmann
parent 6a5e81650a
commit 79897d2097
1 changed files with 4 additions and 3 deletions
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7
net/bluetooth/smp.c
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@ -909,10 +909,11 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
authreq = seclevel_to_authreq(sec_level);
/* hcon->auth_type is set by pair_device in mgmt.c. If the MITM
* flag is set we should also set it for the SMP request.
/* Require MITM if IO Capability allows or the security level
* requires it.
*/
if ((hcon->auth_type & 0x01))
if (hcon->io_capability != HCI_IO_NO_INPUT_OUTPUT ||
sec_level > BT_SECURITY_MEDIUM)
authreq |= SMP_AUTH_MITM;
if (hcon->link_mode & HCI_LM_MASTER) {