[PATCH v3 3/4] Bluetooth: Introduce HCI_CONN_FLAG_DEVICE_PRIVACY device flag
From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Date: 2021-11-20 01:24:54
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Luiz Augusto von Dentz <redacted> This introduces HCI_CONN_FLAG_DEVICE_PRIVACY which can be used by userspace to indicate to the controller to use Device Privacy Mode to a specific device. Signed-off-by: Luiz Augusto von Dentz <redacted> --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/mgmt.c | 12 ++++++++++++ 2 files changed, 13 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index fc93a1907c90..9c94d1c49b25 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h@@ -153,6 +153,7 @@ struct bdaddr_list_with_irk { enum hci_conn_flags { HCI_CONN_FLAG_REMOTE_WAKEUP, + HCI_CONN_FLAG_DEVICE_PRIVACY, __HCI_CONN_NUM_FLAGS, };
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0f4b620bc630..925a549e448c 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c@@ -3978,6 +3978,11 @@ static int exp_ll_privacy_feature_changed(bool enabled, struct hci_dev *hdev, memcpy(ev.uuid, rpa_resolution_uuid, 16); ev.flags = cpu_to_le32((enabled ? BIT(0) : 0) | BIT(1)); + if (enabled && privacy_mode_capable(hdev)) + set_bit(HCI_CONN_FLAG_DEVICE_PRIVACY, hdev->conn_flags); + else + clear_bit(HCI_CONN_FLAG_DEVICE_PRIVACY, hdev->conn_flags); + return mgmt_limited_event(MGMT_EV_EXP_FEATURE_CHANGED, hdev, &ev, sizeof(ev), HCI_MGMT_EXP_FEATURE_EVENTS, skip);
@@ -4461,6 +4466,13 @@ static int set_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, if (params) { bitmap_from_u64(params->flags, current_flags); status = MGMT_STATUS_SUCCESS; + + /* Update passive scan if HCI_CONN_FLAG_DEVICE_PRIVACY + * has been set. + */ + if (test_bit(HCI_CONN_FLAG_DEVICE_PRIVACY, + params->flags)) + hci_update_passive_scan(hdev); } else { bt_dev_warn(hdev, "No such LE device %pMR (0x%x)", &cp->addr.bdaddr,
--
2.33.1