bpf: Add ETH_HLEN=0 to stress test complexity
bpf: Add ETH_HLEN=0 to stress test complexity

The PR "datapath: Support NodePort BPF on L2-less devices" [1] has
increased the complexity of bpf_host and bpf_lxc by introducing a
support for ETH_HLEN=0.

Extend the base options by adding ETH_HLEN=0 to stress test the verifier
complexity when running on net-next (ETH_HLEN=0 depends on the
skb_change_head helper which was introduced in 5.8).

[1]: https://github.com/cilium/cilium/pull/14858

Suggested-by: Paul Chaignon <a027184a55211cd23e3f3094f1fdc728df5e0500@cilium.io>
Signed-off-by: Martynas Pumputis <6b0d31c0d563223024da45691584643ac78c96e8@lambda.lt>

michi-covalent/cilium,tgraf/cilium,cilium/cilium,cilium/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,tklauser/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,tgraf/cilium,tgraf/cilium,cilium/cilium