From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
[ Upstream commit 23b72814da1a094b4c065e0bb598249f310c5577 ]
Get Device Flags don't check if device does actually use an RPA in which case it shall only set HCI_CONN_FLAG_REMOTE_WAKEUP if LL Privacy is enabled.
Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/bluetooth/mgmt.c | 71 ++++++++++++++++++++++++++------------------ 1 file changed, 42 insertions(+), 29 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index cbdf0e2bc5ae0..d0fb74b0db1d5 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4420,6 +4420,22 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, MGMT_STATUS_NOT_SUPPORTED); }
+static u32 get_params_flags(struct hci_dev *hdev, + struct hci_conn_params *params) +{ + u32 flags = hdev->conn_flags; + + /* Devices using RPAs can only be programmed in the acceptlist if + * LL Privacy has been enable otherwise they cannot mark + * HCI_CONN_FLAG_REMOTE_WAKEUP. + */ + if ((flags & HCI_CONN_FLAG_REMOTE_WAKEUP) && !use_ll_privacy(hdev) && + hci_find_irk_by_addr(hdev, ¶ms->addr, params->addr_type)) + flags &= ~HCI_CONN_FLAG_REMOTE_WAKEUP; + + return flags; +} + static int get_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { @@ -4451,10 +4467,10 @@ static int get_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, } else { params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, le_addr_type(cp->addr.type)); - if (!params) goto done;
+ supported_flags = get_params_flags(hdev, params); current_flags = params->flags; }
@@ -4523,38 +4539,35 @@ static int set_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, bt_dev_warn(hdev, "No such BR/EDR device %pMR (0x%x)", &cp->addr.bdaddr, cp->addr.type); } - } else { - params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, - le_addr_type(cp->addr.type)); - if (params) { - /* Devices using RPAs can only be programmed in the - * acceptlist LL Privacy has been enable otherwise they - * cannot mark HCI_CONN_FLAG_REMOTE_WAKEUP. - */ - if ((current_flags & HCI_CONN_FLAG_REMOTE_WAKEUP) && - !use_ll_privacy(hdev) && - hci_find_irk_by_addr(hdev, ¶ms->addr, - params->addr_type)) { - bt_dev_warn(hdev, - "Cannot set wakeable for RPA"); - goto unlock; - }
- params->flags = current_flags; - status = MGMT_STATUS_SUCCESS; + goto unlock; + }
- /* Update passive scan if HCI_CONN_FLAG_DEVICE_PRIVACY - * has been set. - */ - if (params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY) - hci_update_passive_scan(hdev); - } else { - bt_dev_warn(hdev, "No such LE device %pMR (0x%x)", - &cp->addr.bdaddr, - le_addr_type(cp->addr.type)); - } + params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, + le_addr_type(cp->addr.type)); + if (!params) { + bt_dev_warn(hdev, "No such LE device %pMR (0x%x)", + &cp->addr.bdaddr, le_addr_type(cp->addr.type)); + goto unlock; + } + + supported_flags = get_params_flags(hdev, params); + + if ((supported_flags | current_flags) != supported_flags) { + bt_dev_warn(hdev, "Bad flag given (0x%x) vs supported (0x%0x)", + current_flags, supported_flags); + goto unlock; }
+ params->flags = current_flags; + status = MGMT_STATUS_SUCCESS; + + /* Update passive scan if HCI_CONN_FLAG_DEVICE_PRIVACY + * has been set. + */ + if (params->flags & HCI_CONN_FLAG_DEVICE_PRIVACY) + hci_update_passive_scan(hdev); + unlock: hci_dev_unlock(hdev);