From 6fdb90a43e910841d2a73960446cdef2d094763f Mon Sep 17 00:00:00 2001
From: DmitriyEshenko <dmitriy.eshenko@vyos.io>
Date: Tue, 29 Jun 2021 09:21:05 +0000
Subject: pppoe-server: T3405: Add interface cache feature

(cherry picked from commit 065c6b620cb52a3235c7b6e210d34dc8cb943b95)
---
 data/templates/accel-ppp/pppoe.config.tmpl                 |  3 +++
 .../include/accel-ppp/ppp-interface-cache.xml.i            | 14 ++++++++++++++
 interface-definitions/service_pppoe-server.xml.in          |  1 +
 smoketest/scripts/cli/test_service_pppoe-server.py         |  7 +++++++
 4 files changed, 25 insertions(+)
 create mode 100644 interface-definitions/include/accel-ppp/ppp-interface-cache.xml.i

diff --git a/data/templates/accel-ppp/pppoe.config.tmpl b/data/templates/accel-ppp/pppoe.config.tmpl
index 3dfb615da..14079becb 100644
--- a/data/templates/accel-ppp/pppoe.config.tmpl
+++ b/data/templates/accel-ppp/pppoe.config.tmpl
@@ -91,6 +91,9 @@ ipv6-accept-peer-intf-id={{ "1" if ppp_options.ipv6_accept_peer_intf_id is defin
 {% endif %}
 {# MTU #}
 mtu={{ mtu }}
+{% if ppp_options.interface_cache is defined and ppp_options.interface_cache is not none %}
+unit-cache={{ ppp_options.interface_cache }}
+{% endif %}
 
 [pppoe]
 verbose=1
diff --git a/interface-definitions/include/accel-ppp/ppp-interface-cache.xml.i b/interface-definitions/include/accel-ppp/ppp-interface-cache.xml.i
new file mode 100644
index 000000000..9f223d7ed
--- /dev/null
+++ b/interface-definitions/include/accel-ppp/ppp-interface-cache.xml.i
@@ -0,0 +1,14 @@
+<!-- include start from accel-ppp/ppp-interface-cache.xml.i -->
+<leafNode name="interface-cache">
+  <properties>
+    <help>PPP interface cache</help>
+    <valueHelp>
+      <format>1-256000</format>
+      <description>Count of interfaces to keep in cache</description>
+    </valueHelp>
+    <constraint>
+      <validator name="numeric" argument="--range 1-256000"/>
+    </constraint>
+  </properties>
+</leafNode>
+<!-- include end -->
diff --git a/interface-definitions/service_pppoe-server.xml.in b/interface-definitions/service_pppoe-server.xml.in
index dc8af67af..9d3420ed2 100644
--- a/interface-definitions/service_pppoe-server.xml.in
+++ b/interface-definitions/service_pppoe-server.xml.in
@@ -164,6 +164,7 @@
               #include <include/accel-ppp/ppp-mppe.xml.i>
               #include <include/accel-ppp/lcp-echo-interval-failure.xml.i>
               #include <include/accel-ppp/lcp-echo-timeout.xml.i>
+              #include <include/accel-ppp/ppp-interface-cache.xml.i>
               <leafNode name="ipv4">
                 <properties>
                   <help>IPv4 (IPCP) negotiation algorithm</help>
diff --git a/smoketest/scripts/cli/test_service_pppoe-server.py b/smoketest/scripts/cli/test_service_pppoe-server.py
index e8f9facbb..bfbe88daa 100755
--- a/smoketest/scripts/cli/test_service_pppoe-server.py
+++ b/smoketest/scripts/cli/test_service_pppoe-server.py
@@ -91,6 +91,10 @@ class TestServicePPPoEServer(BasicAccelPPPTest.BaseTest):
         mru = '9000'
         self.set(['ppp-options', 'mru', mru])
 
+        # interface-cache
+        interface_cache = '128000'
+        self.set(['ppp-options', 'interface-cache', interface_cache])
+
         # commit changes
         self.session.commit()
 
@@ -113,6 +117,9 @@ class TestServicePPPoEServer(BasicAccelPPPTest.BaseTest):
         # check other settings
         self.assertEqual(conf['connlimit']['limit'], '20/min')
 
+        # check interface-cache
+        self.assertEqual(conf['ppp']['unit-cache'], interface_cache)
+
         # Check for running process
         self.assertTrue(process_named_running(self._process_name))
 
-- 
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