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Bluetooth: Enable LE encryption events only when supported 

The support for LE encryption is optional. When encryption is not
supported then also do not enable the encryption related events.

This moves the event mask setting to the third initialization
stage to ensure that the LE features are available.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-07-12 23:36:16 +02:00 committed by Johan Hedberg
parent 15a49cca98
commit 0da71f1bf9
2 changed files with 8 additions and 4 deletions
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1
include/net/bluetooth/hci.h
View File

@ -329,6 +329,7 @@ enum {
#define LMP_HOST_SC 0x08
/* LE features */
#define HCI_LE_ENCRYPTION 0x01
#define HCI_LE_CONN_PARAM_REQ_PROC 0x02
#define HCI_LE_PING 0x10

11
net/bluetooth/hci_core.c
View File

@ -1422,14 +1422,17 @@ static void hci_setup_event_mask(struct hci_request *req)
/* Use a different default for LE-only devices */
memset(events, 0, sizeof(events));
events[0] |= 0x10; /* Disconnection Complete */
events[0] |= 0x80; /* Encryption Change */
events[1] |= 0x08; /* Read Remote Version Information Complete */
events[1] |= 0x20; /* Command Complete */
events[1] |= 0x40; /* Command Status */
events[1] |= 0x80; /* Hardware Error */
events[2] |= 0x04; /* Number of Completed Packets */
events[3] |= 0x02; /* Data Buffer Overflow */
events[5] |= 0x80; /* Encryption Key Refresh Complete */
if (hdev->le_features[0] & HCI_LE_ENCRYPTION) {
events[0] |= 0x80; /* Encryption Change */
events[5] |= 0x80; /* Encryption Key Refresh Complete */
}
}
if (lmp_inq_rssi_capable(hdev))
@ -1482,8 +1485,6 @@ static void hci_init2_req(struct hci_request *req, unsigned long opt)
if (lmp_le_capable(hdev))
le_setup(req);
hci_setup_event_mask(req);
/* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read
* local supported commands HCI command.
*/
@ -1611,6 +1612,8 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
struct hci_dev *hdev = req->hdev;
u8 p;
hci_setup_event_mask(req);
/* Some Broadcom based Bluetooth controllers do not support the
* Delete Stored Link Key command. They are clearly indicating its
* absence in the bit mask of supported commands.