netifd: only reload swconfig if something changed

Fixes: WIFI-13251
Signed-off-by: John Crispin <john@phrozen.org>

patches/0074-netifd-only-reload-swconfig-if-something-changed.patch

@@ -0,0 +1,30 @@
+From 66382792778a6647ec8809e3858e030b3bbf5554 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Mon, 15 Jan 2024 13:19:24 +0100
+Subject: [PATCH] netifd: only reload swconfig if something changed
+
+Signed-off-by: John Crispin <john@phrozen.org>
+---
+ package/network/config/netifd/files/etc/init.d/network | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/package/network/config/netifd/files/etc/init.d/network b/package/network/config/netifd/files/etc/init.d/network
+index dc208c4ce0..6af668f557 100755
+--- a/package/network/config/netifd/files/etc/init.d/network
++++ b/package/network/config/netifd/files/etc/init.d/network
+@@ -9,7 +9,11 @@ init_switch() {
+ 	setup_switch() { return 0; }
+ 
+ 	include /lib/network
+-	setup_switch
++        uci show network | grep @switch | sort | md5sum | cut -d" " -f1 > /var/run/swconfig.new
++        [ "$(cat /var/run/swconfig.new)" != "$(cat /var/run/swconfig.applied)" ] && {
++                mv /var/run/swconfig.new /var/run/swconfig.applied
++                setup_switch
++        }
+ }
+ 
+ start_service() {
+-- 
+2.34.1
+