How to install linux-headers for rk35xx

I installed dietpi on my nanopi-r6s, now I want to install related linux-headers for bpfcc tools but can’t find it.

# uname -r
6.1.84-vendor-rk35xx

bpfcc-tools debian install guide:

echo deb http://cloudfront.debian.net/debian sid main >> /etc/apt/sources.list
sudo apt-get install -y bpfcc-tools libbpfcc libbpfcc-dev linux-headers-$(uname -r)

For your kernel install linux-headers-vendor-rk35xx.