hci_connect_acl
struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
acl = hci_connect_acl(hdev, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING,
hcon = hci_connect_acl(hdev, dst, chan->sec_level, auth_type,
conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,