Bluetooth: Expose default LE advertising interval via debugfs

Expose the default values for minimum and maximum LE advertising
interval via debugfs for testing purposes.

Signed-off-by: Georg Lukas <georg@op-co.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 475d6003ed15..910f608365f7 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -970,6 +970,62 @@ static int adv_channel_map_get(void *data, u64 *val)
 DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
                         adv_channel_map_set, "%llu\n");
 
+static int adv_min_interval_set(void *data, u64 val)
+{
+        struct hci_dev *hdev = data;
+
+        if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
+                return -EINVAL;
+
+        hci_dev_lock(hdev);
+        hdev->le_adv_min_interval = val;
+        hci_dev_unlock(hdev);
+
+        return 0;
+}
+
+static int adv_min_interval_get(void *data, u64 *val)
+{
+        struct hci_dev *hdev = data;
+
+        hci_dev_lock(hdev);
+        *val = hdev->le_adv_min_interval;
+        hci_dev_unlock(hdev);
+
+        return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
+                        adv_min_interval_set, "%llu\n");
+
+static int adv_max_interval_set(void *data, u64 val)
+{
+        struct hci_dev *hdev = data;
+
+        if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
+                return -EINVAL;
+
+        hci_dev_lock(hdev);
+        hdev->le_adv_max_interval = val;
+        hci_dev_unlock(hdev);
+
+        return 0;
+}
+
+static int adv_max_interval_get(void *data, u64 *val)
+{
+        struct hci_dev *hdev = data;
+
+        hci_dev_lock(hdev);
+        *val = hdev->le_adv_max_interval;
+        hci_dev_unlock(hdev);
+
+        return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
+                        adv_max_interval_set, "%llu\n");
+
 static int device_list_show(struct seq_file *f, void *ptr)
 {
         struct hci_dev *hdev = f->private;
@@ -1833,6 +1889,10 @@ static int __hci_init(struct hci_dev *hdev)
                                     hdev, &supervision_timeout_fops);
                 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs,
                                     hdev, &adv_channel_map_fops);
+                debugfs_create_file("adv_min_interval", 0644, hdev->debugfs,
+                                    hdev, &adv_min_interval_fops);
+                debugfs_create_file("adv_max_interval", 0644, hdev->debugfs,
+                                    hdev, &adv_max_interval_fops);
                 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
                                     &device_list_fops);
                 debugfs_create_u16("discov_interleaved_timeout", 0644,