From d818788932e3c57d020cca9236df7275da452fce Mon Sep 17 00:00:00 2001
From: Nataliia Solomko <natalirs1985@gmail.com>
Date: Wed, 19 Jun 2024 10:40:02 +0300
Subject: T3202: Enable wireguard debug messages

---
 interface-definitions/system_option.xml.in | 13 +++++++++++++
 src/conf_mode/system_option.py             | 12 ++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/interface-definitions/system_option.xml.in b/interface-definitions/system_option.xml.in
index ad423d9d1..e78a53552 100644
--- a/interface-definitions/system_option.xml.in
+++ b/interface-definitions/system_option.xml.in
@@ -49,6 +49,19 @@
                   <valueless/>
                 </properties>
               </leafNode>
+              <node name="debug">
+                <properties>
+                  <help>Dynamic debugging for kernel module</help>
+                </properties>
+                <children>
+                  <leafNode name="wireguard">
+                    <properties>
+                      <help>Dynamic debugging for Wireguard module</help>
+                      <valueless/>
+                    </properties>
+                  </leafNode>
+                </children>
+              </node>
              </children>
            </node>
            <leafNode name="keyboard-layout">
diff --git a/src/conf_mode/system_option.py b/src/conf_mode/system_option.py
index 2c31703e9..56d608569 100755
--- a/src/conf_mode/system_option.py
+++ b/src/conf_mode/system_option.py
@@ -24,6 +24,9 @@ from vyos.configverify import verify_source_interface
 from vyos.configverify import verify_interface_exists
 from vyos.system import grub_util
 from vyos.template import render
+from vyos.utils.dict import dict_search
+from vyos.utils.file import write_file
+from vyos.utils.kernel import check_kmod
 from vyos.utils.process import cmd
 from vyos.utils.process import is_systemd_service_running
 from vyos.utils.network import is_addr_assigned
@@ -159,6 +162,15 @@ def apply(options):
 
     cmd('udevadm control --reload-rules')
 
+    # Enable/disable dynamic debugging for kernel modules
+    modules = ['wireguard']
+    modules_enabled = dict_search('kernel.debug', options) or []
+    for module in modules:
+        if module in modules_enabled:
+            check_kmod(module)
+            write_file('/sys/kernel/debug/dynamic_debug/control', f'module {module} +p')
+        else:
+            write_file('/sys/kernel/debug/dynamic_debug/control', f'module {module} -p')
 
 if __name__ == '__main__':
     try:
-- 
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