From 216e80b61881a13c502f44c5d32fd7603b6ffe60 Mon Sep 17 00:00:00 2001
From: Christian Breunig <christian@breunig.cc>
Date: Mon, 24 Feb 2025 20:54:25 +0100
Subject: lldp: T7165: add support to enable only rx or tx on specific
 interface

LLDP is a stateless protocol which does not necessitate sending to receive
advertisements. There are multiple scenarios such as provider peering links in
which it is advantageous to receive LLDP but not disclose internal information
to the provider.

Add new CLI command:
* set service lldp interface <name> mode [disable|rx-tx|rx|tx]

The default is unchanged and will be rx-tx.

Furthermore if an interface has an explicit LLDP disable configured under
"set service lldp interface <name> disable" this will be migrated to
"set service lldp interface <name> mode disable"
---
 .../include/version/lldp-version.xml.i             |  2 +-
 interface-definitions/service_lldp.xml.in          | 29 +++++++++++++++++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

(limited to 'interface-definitions')

diff --git a/interface-definitions/include/version/lldp-version.xml.i b/interface-definitions/include/version/lldp-version.xml.i
index b41d80451..a7110691a 100644
--- a/interface-definitions/include/version/lldp-version.xml.i
+++ b/interface-definitions/include/version/lldp-version.xml.i
@@ -1,3 +1,3 @@
 <!-- include start from include/version/lldp-version.xml.i -->
-<syntaxVersion component='lldp' version='2'></syntaxVersion>
+<syntaxVersion component='lldp' version='3'></syntaxVersion>
 <!-- include end -->
diff --git a/interface-definitions/service_lldp.xml.in b/interface-definitions/service_lldp.xml.in
index 51a9f9cce..a189cc13b 100644
--- a/interface-definitions/service_lldp.xml.in
+++ b/interface-definitions/service_lldp.xml.in
@@ -29,7 +29,34 @@
               </constraint>
             </properties>
             <children>
-              #include <include/generic-disable-node.xml.i>
+              <leafNode name="mode">
+                <properties>
+                  <help>Set LLDP receive/transmit operation mode of this interface</help>
+                  <completionHelp>
+                    <list>disable rx-tx tx rx</list>
+                  </completionHelp>
+                  <valueHelp>
+                    <format>disable</format>
+                    <description>Do not process or send LLDP messages</description>
+                  </valueHelp>
+                  <valueHelp>
+                    <format>rx-tx</format>
+                    <description>Send and process LLDP messages</description>
+                  </valueHelp>
+                  <valueHelp>
+                    <format>rx</format>
+                    <description>Process incoming LLDP messages</description>
+                  </valueHelp>
+                  <valueHelp>
+                    <format>tx</format>
+                    <description>Send LLDP messages</description>
+                  </valueHelp>
+                  <constraint>
+                    <regex>(disable|rx-tx|tx|rx)</regex>
+                  </constraint>
+                </properties>
+                <defaultValue>rx-tx</defaultValue>
+              </leafNode>
               <node name="location">
                 <properties>
                   <help>LLDP-MED location data</help>
-- 
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