From c60941ca9801cf889b5b0a5622d465119992a885 Mon Sep 17 00:00:00 2001
From: Jason Wen <haibin.wen3@gmail.com>
Date: Wed, 11 Dec 2024 18:11:03 -0500
Subject: [PATCH] Hyundai CAN: Refactor forward hooks for blocked messages
 (#2046)

---
 board/safety/safety_hyundai.h | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/board/safety/safety_hyundai.h b/board/safety/safety_hyundai.h
index 3e9d23216c..cf73afee62 100644
--- a/board/safety/safety_hyundai.h
+++ b/board/safety/safety_hyundai.h
@@ -250,8 +250,17 @@ static int hyundai_fwd_hook(int bus_num, int addr) {
   if (bus_num == 0) {
     bus_fwd = 2;
   }
-  if ((bus_num == 2) && (addr != 0x340) && (addr != 0x485)) {
-    bus_fwd = 0;
+
+  if (bus_num == 2) {
+    // Stock LKAS11 messages
+    bool is_lkas_11 = (addr == 0x340);
+    // LFA and HDA cluster icons
+    bool is_lfahda_mfc = (addr == 0x485);
+
+    bool block_msg = is_lkas_11 || is_lfahda_mfc;
+    if (!block_msg) {
+      bus_fwd = 0;
+    }
   }
 
   return bus_fwd;