Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Bluetooth: hci_core: Introduce HCI_CONN_FLAG_PAST
This introduces a new device flag so userspace can indicate if it
wants to enable PAST Receiver for a specific device.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
+55
-1
+1
include/net/bluetooth/hci_core.h
+1
include/net/bluetooth/hci_core.h
+54
-1
net/bluetooth/hci_sync.c
+54
-1
net/bluetooth/hci_sync.c
···
4324
4324
if (ll_privacy_capable(hdev))
4325
4325
hdev->conn_flags |= HCI_CONN_FLAG_ADDRESS_RESOLUTION;
4326
4326
4327
+
/* Mark PAST if supported */
4328
+
if (past_capable(hdev))
4329
+
hdev->conn_flags |= HCI_CONN_FLAG_PAST;
4330
+
4327
4331
/* If the controller supports Extended Scanner Filter
4328
4332
* Policies, enable the corresponding event.
4329
4333
*/
···
7028
7024
hci_dev_unlock(hdev);
7029
7025
}
7030
7026
7027
+
static int hci_le_past_params_sync(struct hci_dev *hdev, struct hci_conn *conn,
7028
+
struct hci_conn *acl, struct bt_iso_qos *qos)
7029
+
{
7030
+
struct hci_cp_le_past_params cp;
7031
+
int err;
7032
+
7033
+
memset(&cp, 0, sizeof(cp));
7034
+
cp.handle = cpu_to_le16(acl->handle);
7035
+
/* An HCI_LE_Periodic_Advertising_Sync_Transfer_Received event is sent
7036
+
* to the Host. HCI_LE_Periodic_Advertising_Report events will be
7037
+
* enabled with duplicate filtering enabled.
7038
+
*/
7039
+
cp.mode = 0x03;
7040
+
cp.skip = cpu_to_le16(qos->bcast.skip);
7041
+
cp.sync_timeout = cpu_to_le16(qos->bcast.sync_timeout);
7042
+
cp.cte_type = qos->bcast.sync_cte_type;
7043
+
7044
+
/* HCI_LE_PAST_PARAMS command returns a command complete event so it
7045
+
* cannot wait for HCI_EV_LE_PAST_RECEIVED.
7046
+
*/
7047
+
err = __hci_cmd_sync_status(hdev, HCI_OP_LE_PAST_PARAMS,
7048
+
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
7049
+
if (err)
7050
+
return err;
7051
+
7052
+
/* Wait for HCI_EV_LE_PAST_RECEIVED event */
7053
+
return __hci_cmd_sync_status_sk(hdev, HCI_OP_NOP, 0, NULL,
7054
+
HCI_EV_LE_PAST_RECEIVED,
7055
+
conn->conn_timeout, NULL);
7056
+
}
7057
+
7031
7058
static int hci_le_pa_create_sync(struct hci_dev *hdev, void *data)
7032
7059
{
7033
7060
struct hci_cp_le_pa_create_sync cp;
7034
-
struct hci_conn *conn = data;
7061
+
struct hci_conn *conn = data, *le;
7035
7062
struct bt_iso_qos *qos = &conn->iso_qos;
7036
7063
int err;
7037
7064
···
7093
7058
set_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags);
7094
7059
7095
7060
hci_update_passive_scan_sync(hdev);
7061
+
7062
+
/* Check if PAST is possible:
7063
+
*
7064
+
* 1. Check if an ACL connection with the destination address exists
7065
+
* 2. Check if that HCI_CONN_FLAG_PAST has been set which indicates that
7066
+
* user really intended to use PAST.
7067
+
*/
7068
+
le = hci_conn_hash_lookup_le(hdev, &conn->dst, conn->dst_type);
7069
+
if (le) {
7070
+
struct hci_conn_params *params;
7071
+
7072
+
params = hci_conn_params_lookup(hdev, &le->dst, le->dst_type);
7073
+
if (params && params->flags & HCI_CONN_FLAG_PAST) {
7074
+
err = hci_le_past_params_sync(hdev, conn, le, qos);
7075
+
if (!err)
7076
+
goto done;
7077
+
}
7078
+
}
7096
7079
7097
7080
/* SID has not been set listen for HCI_EV_LE_EXT_ADV_REPORT to update
7098
7081
* it.