Bluetooth: Add debugfs entry to show Secure Connections Only mode

For debugging purposes of Secure Connection Only support a simple
debugfs entry is used to indicate if this mode is active or not.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 0064a9a..232c078 100644 (file)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -124,6 +124,7 @@ enum {
        HCI_LE_SCAN,
        HCI_SSP_ENABLED,
        HCI_SC_ENABLED,
+       HCI_SC_ONLY,
        HCI_HS_ENABLED,
        HCI_LE_ENABLED,
        HCI_ADVERTISING,

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 499ec1b..369d307 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -461,6 +461,24 @@ static const struct file_operations force_sc_support_fops = {
        .llseek         = default_llseek,
 };
 
+static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
+                                size_t count, loff_t *ppos)
+{
+       struct hci_dev *hdev = file->private_data;
+       char buf[3];
+
+       buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N';
+       buf[1] = '\n';
+       buf[2] = '\0';
+       return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static const struct file_operations sc_only_mode_fops = {
+       .open           = simple_open,
+       .read           = sc_only_mode_read,
+       .llseek         = default_llseek,
+};
+
 static int idle_timeout_set(void *data, u64 val)
 {
        struct hci_dev *hdev = data;
@@ -1491,6 +1509,8 @@ static int __hci_init(struct hci_dev *hdev)
                                    hdev, &ssp_debug_mode_fops);
                debugfs_create_file("force_sc_support", 0644, hdev->debugfs,
                                    hdev, &force_sc_support_fops);
+               debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
+                                   hdev, &sc_only_mode_fops);
        }
 
        if (lmp_sniff_capable(hdev)) {