Merge pull request #3706 from vyos/mergify/bp/sagitta/pr-3679

T3202: Enable wireguard debug messages (backport #3679)
vyos · Jun 25, 2024 · 621dd08 · 621dd08
2 parents 0c04803 + 5b0faee
commit 621dd08
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diff --git 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
@@ -24,6 +24,9 @@
 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
@@ -36,6 +39,7 @@
 ssh_config = r'/etc/ssh/ssh_config.d/91-vyos-ssh-client-options.conf'
 systemd_action_file = '/lib/systemd/system/ctrl-alt-del.target'
 usb_autosuspend = r'/etc/udev/rules.d/40-usb-autosuspend.rules'
+kernel_dynamic_debug = r'/sys/kernel/debug/dynamic_debug/control'
 time_format_to_locale = {
     '12-hour': 'en_US.UTF-8',
     '24-hour': 'en_GB.UTF-8'
@@ -157,8 +161,18 @@ def apply(options):
         time_format = time_format_to_locale.get(options['time_format'])
         cmd(f'localectl set-locale LC_TIME={time_format}')
 
+    # Reload UDEV, required for USB auto suspend
     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(kernel_dynamic_debug, f'module {module} +p')
+        else:
+            write_file(kernel_dynamic_debug, f'module {module} -p')
 
 if __name__ == '__main__':
     try: