From 280cb483762a9718d105e473f4bb97b32adf1fcf Mon Sep 17 00:00:00 2001
From: Nataliia Solomko <natalirs1985@gmail.com>
Date: Wed, 28 Oct 2026 12:50:26 +0200
Subject: interfaces: T9491: refuse deleting an interface used as mirror or
 redirect target

A mirror or redirect target could be deleted while another interface
still pointed at it. The commit was accepted, but after save and reboot
the source interface failed verification and its whole configuration
was dropped.

Mirror ingress, mirror egress and redirect now take part in the interface
reverse-dependency check, so deleting a target that is still in use now
fails at commit time. Deleting it together with every interface that
points at it still succeeds.
---
 interface-definitions/include/interface/mirror.xml.i   | 2 ++
 interface-definitions/include/interface/redirect.xml.i | 1 +
 2 files changed, 3 insertions(+)

(limited to 'interface-definitions/include/interface')

diff --git a/interface-definitions/include/interface/mirror.xml.i b/interface-definitions/include/interface/mirror.xml.i
index 903c62777..ad860012d 100644
--- a/interface-definitions/include/interface/mirror.xml.i
+++ b/interface-definitions/include/interface/mirror.xml.i
@@ -14,6 +14,7 @@
           <format>txt</format>
           <description>Destination interface name</description>
         </valueHelp>
+        <dependency kind="interface" alert="error"/>
       </properties>
     </leafNode>
     <leafNode name="egress">
@@ -26,6 +27,7 @@
           <format>txt</format>
           <description>Destination interface name</description>
         </valueHelp>
+        <dependency kind="interface" alert="error"/>
       </properties>
     </leafNode>
   </children>
diff --git a/interface-definitions/include/interface/redirect.xml.i b/interface-definitions/include/interface/redirect.xml.i
index 9b41cd8ff..1e4778fb5 100644
--- a/interface-definitions/include/interface/redirect.xml.i
+++ b/interface-definitions/include/interface/redirect.xml.i
@@ -12,6 +12,7 @@
     <constraint>
       #include <include/constraint/interface-name.xml.i>
     </constraint>
+    <dependency kind="interface" alert="error"/>
   </properties>
 </leafNode>
 <!-- include end -->
-- 
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