Description: Rename del_timer_sync to timer_delete_sync in Linux 6.15
 The kernel upstream commit 8fa7292fee5c (treewide: Switch/rename to timer_delete[_sync]())),
 which landed mainline in v6.15, renames the function from del_timer_sync()
 to timer_delete_sync(). Adjust the code accordingly.
Author: Massimiliano Pellizzer <massimiliano.pellizzer@canonical.com>
Bug-Debian: http://bugs.debian.org/1106550
Bug-Ubuntu: https://bugs.launchpad.net/bugs/2116328
--- a/ipt_NETFLOW.c
+++ b/ipt_NETFLOW.c
@@ -5782,7 +5782,11 @@
 err_stop_timer:
 	_unschedule_scan_worker();
 	netflow_scan_and_export(AND_FLUSH);
-	del_timer_sync(&rate_timer);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(6,15,0)
+ 	del_timer_sync(&rate_timer);
+#else
+	timer_delete_sync(&rate_timer);
+#endif
 	free_templates();
 	destination_removeall();
 #ifdef ENABLE_AGGR
@@ -5832,7 +5836,11 @@
 #endif
 	_unschedule_scan_worker();
 	netflow_scan_and_export(AND_FLUSH);
-	del_timer_sync(&rate_timer);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(6,15,0)
+ 	del_timer_sync(&rate_timer);
+#else
+	timer_delete_sync(&rate_timer);
+#endif
 
 #ifdef HAVE_SYNCHRONIZE_SCHED
 	synchronize_sched();