Bluetooth: Add support for setting SSP debug mode
Enabling and disabling SSP debug mode is useful for development. This
adds a debugfs entry that allows to configure the SSP debug mode.
On purpose this has been implemented as debugfs entry and not a public
API since it is really only useful during testing and development.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 384b9db..2a9e925 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -303,6 +303,55 @@
DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
auto_accept_delay_set, "%llu\n");
+static int ssp_debug_mode_set(void *data, u64 val)
+{
+ struct hci_dev *hdev = data;
+ struct sk_buff *skb;
+ __u8 mode;
+ int err;
+
+ if (val != 0 && val != 1)
+ return -EINVAL;
+
+ if (!test_bit(HCI_UP, &hdev->flags))
+ return -ENETDOWN;
+
+ hci_req_lock(hdev);
+ mode = val;
+ skb = __hci_cmd_sync(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, sizeof(mode),
+ &mode, HCI_CMD_TIMEOUT);
+ hci_req_unlock(hdev);
+
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ err = -bt_to_errno(skb->data[0]);
+ kfree_skb(skb);
+
+ if (err < 0)
+ return err;
+
+ hci_dev_lock(hdev);
+ hdev->ssp_debug_mode = val;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+static int ssp_debug_mode_get(void *data, u64 *val)
+{
+ struct hci_dev *hdev = data;
+
+ hci_dev_lock(hdev);
+ *val = hdev->ssp_debug_mode;
+ hci_dev_unlock(hdev);
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops, ssp_debug_mode_get,
+ ssp_debug_mode_set, "%llu\n");
+
static int idle_timeout_set(void *data, u64 val)
{
struct hci_dev *hdev = data;
@@ -1199,9 +1248,12 @@
hdev, &voice_setting_fops);
}
- if (lmp_ssp_capable(hdev))
+ if (lmp_ssp_capable(hdev)) {
debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
hdev, &auto_accept_delay_fops);
+ debugfs_create_file("ssp_debug_mode", 0644, hdev->debugfs,
+ hdev, &ssp_debug_mode_fops);
+ }
if (lmp_sniff_capable(hdev)) {
debugfs_create_file("idle_timeout", 0644, hdev->debugfs,