From 13f99beada6ac28ede7c74d434b84a63bf9905b0 Mon Sep 17 00:00:00 2001
From: Viacheslav Hletenko <v.gletenko@vyos.io>
Date: Wed, 19 Feb 2025 15:19:09 +0000
Subject: T7181: VPP add initial source NAT implentation

Add initial source NAT implementation

```
set vpp nat44 source inbound-interface 'eth2'
set vpp nat44 source outbound-interface 'eth1'
set vpp nat44 source translation address '192.0.2.1-192.0.2.2'
```

Add initial simple implementation of the source NAT
In the future, we'll extend it to the rules if it is possible to do
via VPP API
---
 interface-definitions/vpp.xml.in | 65 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

(limited to 'interface-definitions')

diff --git a/interface-definitions/vpp.xml.in b/interface-definitions/vpp.xml.in
index 1f1cb44cc..175b28a0b 100644
--- a/interface-definitions/vpp.xml.in
+++ b/interface-definitions/vpp.xml.in
@@ -833,6 +833,71 @@
         </node>
       </children>
     </node>
+    <node name="nat44">
+      <properties>
+        <help>NAT44</help>
+      </properties>
+      <children>
+        <node name="source" owner="${vyos_conf_scripts_dir}/vpp_nat_source.py">
+          <properties>
+            <help>Source NAT setting</help>
+            <priority>320</priority>
+          </properties>
+          <children>
+            <leafNode name="inbound-interface">
+              <properties>
+                <help>Inbound interface of NAT traffic</help>
+                <completionHelp>
+                  <list>any</list>
+                  <script>${vyos_completion_dir}/list_interfaces</script>
+                </completionHelp>
+              </properties>
+            </leafNode>
+            <leafNode name="outbound-interface">
+              <properties>
+                <help>Outbound interface of NAT traffic</help>
+                <completionHelp>
+                  <list>any</list>
+                  <script>${vyos_completion_dir}/list_interfaces</script>
+                </completionHelp>
+              </properties>
+            </leafNode>
+            <node name="translation">
+              <properties>
+                <help>Outside NAT IP (source NAT only)</help>
+              </properties>
+              <children>
+                <leafNode name="address">
+                  <properties>
+                    <help>IP address, subnet, or range</help>
+                    <completionHelp>
+                      <list>masquerade</list>
+                    </completionHelp>
+                    <valueHelp>
+                      <format>ipv4</format>
+                      <description>IPv4 address to match</description>
+                    </valueHelp>
+                    <valueHelp>
+                      <format>ipv4range</format>
+                      <description>IPv4 address range to match</description>
+                    </valueHelp>
+                    <valueHelp>
+                      <format>masquerade</format>
+                      <description>NAT to the primary address of outbound-interface</description>
+                    </valueHelp>
+                    <constraint>
+                      <validator name="ipv4-address"/>
+                      <validator name="ipv4-range"/>
+                      <regex>(masquerade)</regex>
+                    </constraint>
+                  </properties>
+                </leafNode>
+              </children>
+            </node>
+          </children>
+        </node>
+      </children>
+    </node>
     <tagNode name="kernel-interfaces" owner="${vyos_conf_scripts_dir}/vpp_kernel-interfaces.py">
       <properties>
         <help>VPP kernel interface settings</help>
-- 
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