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SubjectRe: [PATCH bpf-next] bpf: allow CGROUP_SKB programs to use bpf_skb_cgroup_id() helper
Date
On Thu, Jun 06, 2019 at 01:30:12PM -0700, Roman Gushchin wrote:
> Currently bpf_skb_cgroup_id() is not supported for CGROUP_SKB
> programs. An attempt to load such a program generates an error
> like this:
>
> libbpf:
> 0: (b7) r6 = 0
> ...
> 9: (85) call bpf_skb_cgroup_id#79
> unknown func bpf_skb_cgroup_id#79
>
> There are no particular reasons for denying it, and we have some
> use cases where it might be useful.
>
> So let's add it to the list of allowed helpers.
Acked-by: Martin KaFai Lau <kafai@fb.com>

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