T5213: Add accounting-interim-interval option for L2TP-server

Add RADIUS accounting-interim-interval option for L2TP-server
Specifies interval in seconds to send accounting information
(may be overridden by radius Acct-Interim-Interval attribute)

set vpn l2tp remote-access authentication radius accounting-interim-interval '120'

4 files changed, 24 insertions, 1 deletions

diff --git a/data/templates/accel-ppp/l2tp.config.j2 b/data/templates/accel-ppp/l2tp.config.j2
index 5914fd375..a2f9c9fc7 100644
--- a/data/templates/accel-ppp/l2tp.config.j2
+++ b/data/templates/accel-ppp/l2tp.config.j2
@@ -91,6 +91,9 @@ server={{ r.server }},{{ r.key }},auth-port={{ r.port }},acct-port={{ r.acct_por
 {%     if radius_dynamic_author.server is vyos_defined %}
 dae-server={{ radius_dynamic_author.server }}:{{ radius_dynamic_author.port }},{{ radius_dynamic_author.key }}
 {%     endif %}
+{%     if radius_acct_interim_interval is vyos_defined %}
+acct-interim-interval={{ radius_acct_interim_interval }}
+{%     endif %}
 {%     if radius_acct_inter_jitter %}
 acct-interim-jitter={{ radius_acct_inter_jitter }}
 {%     endif %}
diff --git a/interface-definitions/include/accel-ppp/radius-accounting-interim-interval.xml.i b/interface-definitions/include/accel-ppp/radius-accounting-interim-interval.xml.i
new file mode 100644
index 000000000..311ef969c
--- /dev/null
+++ b/interface-definitions/include/accel-ppp/radius-accounting-interim-interval.xml.i
@@ -0,0 +1,15 @@
+<!-- include start from accel-ppp/radius-accounting-interim-interval.xml.i -->
+<leafNode name="accounting-interim-interval">
+  <properties>
+    <help>Interval in seconds to send accounting information</help>
+    <valueHelp>
+      <format>u32:1-3600</format>
+      <description>Interval in seconds to send accounting information</description>
+    </valueHelp>
+    <constraint>
+      <validator name="numeric" argument="--range 1-3600"/>
+    </constraint>
+    <constraintErrorMessage>Interval value must be between 1 and 3600 seconds</constraintErrorMessage>
+  </properties>
+</leafNode>
+<!-- include end -->
diff --git a/interface-definitions/vpn-l2tp.xml.in b/interface-definitions/vpn-l2tp.xml.in
index 6b64c5f5d..ec186cd23 100644
--- a/interface-definitions/vpn-l2tp.xml.in
+++ b/interface-definitions/vpn-l2tp.xml.in
@@ -177,6 +177,7 @@
                   #include <include/radius-auth-server-ipv4.xml.i>
                   <node name="radius">
                     <children>
+                      #include <include/accel-ppp/radius-accounting-interim-interval.xml.i>
                       <tagNode name="server">
                         <children>
                           #include <include/accel-ppp/radius-additions-disable-accounting.xml.i>
diff --git a/src/conf_mode/vpn_l2tp.py b/src/conf_mode/vpn_l2tp.py
index 65623c2b1..ffac3b023 100755
--- a/src/conf_mode/vpn_l2tp.py
+++ b/src/conf_mode/vpn_l2tp.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2019-2020 VyOS maintainers and contributors
+# Copyright (C) 2019-2023 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -63,6 +63,7 @@ default_config_data = {
     'ppp_ipv6_peer_intf_id': None,
     'radius_server': [],
     'radius_acct_inter_jitter': '',
+    'radius_acct_interim_interval': None,
     'radius_acct_tmo': '3',
     'radius_max_try': '3',
     'radius_timeout': '3',
@@ -190,6 +191,9 @@ def get_config(config=None):
         # advanced radius-setting
         conf.set_level(base_path + ['authentication', 'radius'])
 
+        if conf.exists(['accounting-interim-interval']):
+            l2tp['radius_acct_interim_interval'] = conf.return_value(['accounting-interim-interval'])
+
         if conf.exists(['acct-interim-jitter']):
             l2tp['radius_acct_inter_jitter'] = conf.return_value(['acct-interim-jitter'])