Bluetooth: mgmt: Allow connectable/discoverable changes in off state
This patch makes it possible to toggle the connectable & discoverable
settings when powered off. Two new hdev->dev_flags flags are added to
track what the scan mode should be when the device is finally powered
on.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0f87030..6311be7 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -398,10 +398,10 @@
if (!test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
settings |= MGMT_SETTING_POWERED;
- if (test_bit(HCI_PSCAN, &hdev->flags))
+ if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_CONNECTABLE;
- if (test_bit(HCI_ISCAN, &hdev->flags))
+ if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_DISCOVERABLE;
if (test_bit(HCI_PAIRABLE, &hdev->dev_flags))
@@ -804,6 +804,7 @@
struct mgmt_cp_set_discoverable *cp = data;
struct hci_dev *hdev;
struct pending_cmd *cmd;
+ u16 timeout;
u8 scan;
int err;
@@ -818,9 +819,11 @@
return cmd_status(sk, index, MGMT_OP_SET_DISCOVERABLE,
MGMT_STATUS_INVALID_PARAMS);
+ timeout = get_unaligned_le16(&cp->timeout);
+
hci_dev_lock(hdev);
- if (!hdev_is_powered(hdev)) {
+ if (!hdev_is_powered(hdev) && timeout > 0) {
err = cmd_status(sk, index, MGMT_OP_SET_DISCOVERABLE,
MGMT_STATUS_NOT_POWERED);
goto failed;
@@ -833,8 +836,22 @@
goto failed;
}
- if (cp->val == test_bit(HCI_ISCAN, &hdev->flags) &&
- test_bit(HCI_PSCAN, &hdev->flags)) {
+ if (!test_bit(HCI_CONNECTABLE, &hdev->dev_flags)) {
+ err = cmd_status(sk, index, MGMT_OP_SET_DISCOVERABLE,
+ MGMT_STATUS_REJECTED);
+ goto failed;
+ }
+
+ if (!hdev_is_powered(hdev)) {
+ if (cp->val)
+ set_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
+ else
+ clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
+ err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
+ goto failed;
+ }
+
+ if (!!cp->val == test_bit(HCI_DISCOVERABLE, &hdev->dev_flags)) {
err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
goto failed;
}
@@ -857,7 +874,7 @@
mgmt_pending_remove(cmd);
if (cp->val)
- hdev->discov_timeout = get_unaligned_le16(&cp->timeout);
+ hdev->discov_timeout = timeout;
failed:
hci_dev_unlock(hdev);
@@ -888,8 +905,13 @@
hci_dev_lock(hdev);
if (!hdev_is_powered(hdev)) {
- err = cmd_status(sk, index, MGMT_OP_SET_CONNECTABLE,
- MGMT_STATUS_NOT_POWERED);
+ if (cp->val)
+ set_bit(HCI_CONNECTABLE, &hdev->dev_flags);
+ else {
+ clear_bit(HCI_CONNECTABLE, &hdev->dev_flags);
+ clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
+ }
+ err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
goto failed;
}
@@ -900,7 +922,7 @@
goto failed;
}
- if (cp->val == test_bit(HCI_PSCAN, &hdev->flags)) {
+ if (!!cp->val == test_bit(HCI_PSCAN, &hdev->flags)) {
err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
goto failed;
}
@@ -2881,9 +2903,22 @@
__le32 ev;
int err;
+ if (!test_bit(HCI_MGMT, &hdev->dev_flags))
+ return 0;
+
mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
- if (!powered) {
+ if (powered) {
+ u8 scan = 0;
+
+ if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
+ scan |= SCAN_PAGE;
+ if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
+ scan |= SCAN_INQUIRY;
+
+ if (scan)
+ hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+ } else {
u8 status = ENETDOWN;
mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status);
}
@@ -2902,15 +2937,25 @@
int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable)
{
struct cmd_lookup match = { NULL, hdev };
- __le32 ev;
- int err;
+ bool changed = false;
+ int err = 0;
mgmt_pending_foreach(MGMT_OP_SET_DISCOVERABLE, hdev, settings_rsp, &match);
- ev = cpu_to_le32(get_current_settings(hdev));
+ if (discoverable) {
+ if (!test_and_set_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
+ changed = true;
+ } else {
+ if (test_and_clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
+ changed = true;
+ }
- err = mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev),
+ if (changed) {
+ __le32 ev = cpu_to_le32(get_current_settings(hdev));
+ err = mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev),
match.sk);
+ }
+
if (match.sk)
sock_put(match.sk);
@@ -2919,16 +2964,26 @@
int mgmt_connectable(struct hci_dev *hdev, u8 connectable)
{
- __le32 ev;
struct cmd_lookup match = { NULL, hdev };
- int err;
+ bool changed = false;
+ int err = 0;
mgmt_pending_foreach(MGMT_OP_SET_CONNECTABLE, hdev, settings_rsp,
&match);
- ev = cpu_to_le32(get_current_settings(hdev));
+ if (connectable) {
+ if (!test_and_set_bit(HCI_CONNECTABLE, &hdev->dev_flags))
+ changed = true;
+ } else {
+ if (test_and_clear_bit(HCI_CONNECTABLE, &hdev->dev_flags))
+ changed = true;
+ }
- err = mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev), match.sk);
+ if (changed) {
+ __le32 ev = cpu_to_le32(get_current_settings(hdev));
+ err = mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev),
+ match.sk);
+ }
if (match.sk)
sock_put(match.sk);