From 49011d3804012ecc9509fa53d8af40713a1c6b74 Mon Sep 17 00:00:00 2001
From: Ron He <zecheng@meta.com>
Date: Mon, 2 Dec 2024 16:25:22 -0800
Subject: [PATCH] Sai switch process shel setting deltas

Summary: As titled

Reviewed By: jasmeetbagga

Differential Revision: D66532306

fbshipit-source-id: 6942ca41c3952baa5cc08eee72442a0c1742aa14
---
 fboss/agent/hw/sai/switch/SaiSwitch.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fboss/agent/hw/sai/switch/SaiSwitch.cpp b/fboss/agent/hw/sai/switch/SaiSwitch.cpp
index 2ce4847997417..08471dbf3f25d 100644
--- a/fboss/agent/hw/sai/switch/SaiSwitch.cpp
+++ b/fboss/agent/hw/sai/switch/SaiSwitch.cpp
@@ -1396,6 +1396,14 @@ void SaiSwitch::processSwitchSettingsChangeSansDrainedEntryLocked(
           newConditionalEntropyRehashPeriodUS.value_or(0));
     }
   }
+
+  {
+    const auto oldShelConfig = oldSwitchSettings->getSelfHealingEcmpLagConfig();
+    const auto newShelConfig = newSwitchSettings->getSelfHealingEcmpLagConfig();
+    if (oldShelConfig != newShelConfig) {
+      managerTable_->switchManager().setShelConfig(newShelConfig);
+    }
+  }
 }
 
 template <typename LockPolicyT>