1 files changed, 61 insertions, 0 deletions

diff --git a/net/bluetooth/hci_debugfs.c b/net/bluetooth/hci_debugfs.c
index 1c8100bc4e04..6b1314c738b8 100644
--- a/net/bluetooth/hci_debugfs.c
+++ b/net/bluetooth/hci_debugfs.c
@@ -26,6 +26,7 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 
+#include "smp.h"
 #include "hci_debugfs.h"
 
 #define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk)				      \
@@ -989,6 +990,62 @@ static int adv_max_interval_get(void *data, u64 *val)
 DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
 			adv_max_interval_set, "%llu\n");
 
+static int min_key_size_set(void *data, u64 val)
+{
+	struct hci_dev *hdev = data;
+
+	if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE)
+		return -EINVAL;
+
+	hci_dev_lock(hdev);
+	hdev->le_min_key_size = val;
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+static int min_key_size_get(void *data, u64 *val)
+{
+	struct hci_dev *hdev = data;
+
+	hci_dev_lock(hdev);
+	*val = hdev->le_min_key_size;
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(min_key_size_fops, min_key_size_get,
+			min_key_size_set, "%llu\n");
+
+static int max_key_size_set(void *data, u64 val)
+{
+	struct hci_dev *hdev = data;
+
+	if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size)
+		return -EINVAL;
+
+	hci_dev_lock(hdev);
+	hdev->le_max_key_size = val;
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+static int max_key_size_get(void *data, u64 *val)
+{
+	struct hci_dev *hdev = data;
+
+	hci_dev_lock(hdev);
+	*val = hdev->le_max_key_size;
+	hci_dev_unlock(hdev);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(max_key_size_fops, max_key_size_get,
+			max_key_size_set, "%llu\n");
+
 static int auth_payload_timeout_set(void *data, u64 val)
 {
 	struct hci_dev *hdev = data;
@@ -1071,6 +1128,10 @@ void hci_debugfs_create_le(struct hci_dev *hdev)
 			    &adv_max_interval_fops);
 	debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
 			   &hdev->discov_interleaved_timeout);
+	debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
+			    &min_key_size_fops);
+	debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
+			    &max_key_size_fops);
 	debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
 			    &auth_payload_timeout_fops);