--- zzzz-none-000/linux-4.19.183/include/uapi/linux/sockios.h	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/include/uapi/linux/sockios.h	2023-06-28 08:54:20.000000000 +0000
@@ -132,6 +132,10 @@
 #define SIOCSHWTSTAMP	0x89b0		/* set and get config		*/
 #define SIOCGHWTSTAMP	0x89b1		/* get config			*/
 
+/* applicaton mark. only implemented in CONFIG_AVM_SK_TC_INDEX kernels */
+#define SIOCSET_TC_INDEX    0x89d0  /* set tc_index for socket */
+#define SIOCGET_TC_INDEX    0x89d1  /* get tc_index for socket */
+
 /* Device private ioctl calls */
 
 /*