CONFIG_NET_CLS_FLOWER=m for cls_flower kernel module

[h1771t]

Describe the bug

config CONFIG_NET_CLS_FLOWER=m is not in https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/configs/bcm2709_defconfig

Steps to reproduce the behaviour

see default modules in https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/configs/bcm2709_defconfig, no mention of CONFIG_NET_CLS_FLOWER

Device (s)

Raspberry Pi 2 Mod. B

System

root@raspberrypi:~# cat /etc/rpi-issue
Raspberry Pi reference 2022-01-28
Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, f01430c9d8f67a4b9719cc00e74a2079d3834d5d, stage2

root@raspberrypi:~# vcgencmd version
Jan 20 2022 13:58:22
Copyright (c) 2012 Broadcom
version bd88f66f8952d34e4e0613a85c7a6d3da49e13e2 (clean) (release) (start)

Linux raspberrypi 5.10.92-v7+ #1514 SMP Mon Jan 17 17:36:39 GMT 2022 armv7l GNU/Linux

Logs

No response

Additional context

Using a raspberry pi 2 as a router. Need kernel module cls_flower to be able to use tc-flower with queue control. Any reason flower is not built by default? Needing flower to be able to do lookups into NAT table (connectoin mark) to classify with tc filter. Currently cls_fw.ko is available but only reads packet mark, not connection mark from NAT table. Cannot see/find any other classifier module built, that can do reading of NAT table connection mark.

I see in https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/configs/bcm2709_defconfig that flower is not set to be built? Thanks in advance.