Bluetooth: Add variable SSP auto-accept delay support

Some test systems require an arbitrary delay to the auto-accept test
cases for Secure Simple Pairing in order for the tests to pass.
Previously when this was handled in user space it was worked around by
code modifications and recompilation, but now that it's on the kernel
side it's more convenient if there's a debugfs interface for it.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 31 insertions, 0 deletions

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 8775933ea837..a6c3aa8be1f7 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -511,6 +511,35 @@ static const struct file_operations uuids_fops = {
         .release        = single_release,
 };
 
+static int auto_accept_delay_set(void *data, u64 val)
+{
+        struct hci_dev *hdev = data;
+
+        hci_dev_lock_bh(hdev);
+
+        hdev->auto_accept_delay = val;
+
+        hci_dev_unlock_bh(hdev);
+
+        return 0;
+}
+
+static int auto_accept_delay_get(void *data, u64 *val)
+{
+        struct hci_dev *hdev = data;
+
+        hci_dev_lock_bh(hdev);
+
+        *val = hdev->auto_accept_delay;
+
+        hci_dev_unlock_bh(hdev);
+
+        return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
+                                        auto_accept_delay_set, "%llu\n");
+
 int hci_register_sysfs(struct hci_dev *hdev)
 {
         struct device *dev = &hdev->dev;
@@ -545,6 +574,8 @@ int hci_register_sysfs(struct hci_dev *hdev)
 
         debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
 
+        debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
+                                                &auto_accept_delay_fops);
         return 0;
 }