[PATCH -next 0/4] cgroup: bpf: cgroup2 membership test on skb

[Martin KaFai Lau]

This series is to implement a bpf-way to
check the cgroup2 membership of a skb (sk_buff).

It is similar to the feature added in netfilter:
c38c4597e4bf ("netfilter: implement xt_cgroup cgroup2 path match")

The current target is the tc-like usage.