admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bluetooth: hci_core: Introduce HCI_CONN_FLAG_PAST

Browse Source 
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>
This commit is contained in:
Luiz Augusto von Dentz
2025-09-02 11:14:28 -04:00
parent 33b2835f0b
commit c530569adc
2 changed files with 55 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/bluetooth/hci_core.h
View File

@@ -166,6 +166,7 @@ enum hci_conn_flags {
HCI_CONN_FLAG_REMOTE_WAKEUP = BIT(0),
HCI_CONN_FLAG_DEVICE_PRIVACY = BIT(1),
HCI_CONN_FLAG_ADDRESS_RESOLUTION = BIT(2),
HCI_CONN_FLAG_PAST = BIT(3),
};
typedef u8 hci_conn_flags_t;

55
net/bluetooth/hci_sync.c
View File

@@ -4324,6 +4324,10 @@ static int hci_le_set_event_mask_sync(struct hci_dev *hdev)
if (ll_privacy_capable(hdev))
hdev->conn_flags |= HCI_CONN_FLAG_ADDRESS_RESOLUTION;
/* Mark PAST if supported */
if (past_capable(hdev))
hdev->conn_flags |= HCI_CONN_FLAG_PAST;
/* If the controller supports Extended Scanner Filter
* Policies, enable the corresponding event.
*/
@@ -7024,10 +7028,41 @@ unlock:
hci_dev_unlock(hdev);
}
static int hci_le_past_params_sync(struct hci_dev *hdev, struct hci_conn *conn,
struct hci_conn *acl, struct bt_iso_qos *qos)
{
struct hci_cp_le_past_params cp;
int err;
memset(&cp, 0, sizeof(cp));
cp.handle = cpu_to_le16(acl->handle);
/* An HCI_LE_Periodic_Advertising_Sync_Transfer_Received event is sent
* to the Host. HCI_LE_Periodic_Advertising_Report events will be
* enabled with duplicate filtering enabled.
*/
cp.mode = 0x03;
cp.skip = cpu_to_le16(qos->bcast.skip);
cp.sync_timeout = cpu_to_le16(qos->bcast.sync_timeout);
cp.cte_type = qos->bcast.sync_cte_type;
/* HCI_LE_PAST_PARAMS command returns a command complete event so it
* cannot wait for HCI_EV_LE_PAST_RECEIVED.
*/
err = __hci_cmd_sync_status(hdev, HCI_OP_LE_PAST_PARAMS,
sizeof(cp), &cp, HCI_CMD_TIMEOUT);
if (err)
return err;
/* Wait for HCI_EV_LE_PAST_RECEIVED event */
return __hci_cmd_sync_status_sk(hdev, HCI_OP_NOP, 0, NULL,
HCI_EV_LE_PAST_RECEIVED,
conn->conn_timeout, NULL);
}
static int hci_le_pa_create_sync(struct hci_dev *hdev, void *data)
{
struct hci_cp_le_pa_create_sync cp;
struct hci_conn *conn = data;
struct hci_conn *conn = data, *le;
struct bt_iso_qos *qos = &conn->iso_qos;
int err;
@@ -7059,6 +7094,24 @@ static int hci_le_pa_create_sync(struct hci_dev *hdev, void *data)
hci_update_passive_scan_sync(hdev);
/* Check if PAST is possible:
*
* 1. Check if an ACL connection with the destination address exists
* 2. Check if that HCI_CONN_FLAG_PAST has been set which indicates that
* user really intended to use PAST.
*/
le = hci_conn_hash_lookup_le(hdev, &conn->dst, conn->dst_type);
if (le) {
struct hci_conn_params *params;
params = hci_conn_params_lookup(hdev, &le->dst, le->dst_type);
if (params && params->flags & HCI_CONN_FLAG_PAST) {
err = hci_le_past_params_sync(hdev, conn, le, qos);
if (!err)
goto done;
}
}
/* SID has not been set listen for HCI_EV_LE_EXT_ADV_REPORT to update
* it.
*/