RPI4 (64 bit) BPF kernel config

Feature Requests
1

I’m wondering whether the RPI4 (64bit) kernel showed in here operating-system/rpi4_defconfig at cbce0f2a2e02ac847998ef3c0944e62a039672c3 · home-assistant/operating-system · GitHub has the following kernel parameters enabled:

CONFIG_BPF=y
CONFIG_BPF_SYSCALL=y
CONFIG_NET_CLS_BPF=y
CONFIG_BPF_JIT=y
CONFIG_NET_CLS_ACT=y
CONFIG_NET_SCH_INGRESS=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_USER_API_HASH=y
CONFIG_CGROUPS=y
CONFIG_CGROUP_BPF=y

I was not able to find the txt config with all the parameters. Could you please show me the way? THanks

2

I have looked at the kernel defconfig under arm64/configs/defconfig and those parameters are not enabled. Would be a problem to enable them?

3

Only this is enabled

4

the SHA1 defconfig for a pi is CONFIG_CRYPTO_SHA1_ARM64_CE and is default enabled

Also CONFIG_BPF_JIT enables CONFIG_BPF but not the syscall (I think), and cgroups should be enabled for Docker support, as should CONFIG_BPF_SYSCALL

So I think you still need

CONFIG_CGROUP_BPF
CONFIG_CRYPTO_USER_API_HASH
CONFIG_NET_CLS_BPF
CONFIG_NET_CLS_ACT
CONFIG_NET_SCH_INGRESS
5

that makes sense. would be enough to wire a PR against the official repo? I would want to avoid to bake my custom kernel and use that.

6

If you are able to clearly lay out the requirement and need for those config changes

7

The reason is because I would need to run on my RPI4 that is running HA OS, Cilium as a container to enhance networking capabilities of this box. and one of the requirements to run Cilium is exactly have a kernel baked with those params