Re: [PATCH bpf-next] bpf: add read/write access to skb->tstamp from tc clsact progs

[Eric Dumazet]

On 11/20/2018 06:40 PM, Alexei Starovoitov wrote:

> 
> looks good to me.
> 
> Any particular reason you decided to disable it for cg_skb ?
> It seems to me the same EDT approach will work from
> cgroup-bpf skb hooks just as well and then we can have neat
> way of controlling traffic per-container instead of tc-clsbpf global.
> If you're already on cgroup v2 it will save you a lot of classifier
> cycles, since you'd be able to group apps by cgroup
> instead of relying on ip only.

Vlad first wrote a complete version, but we felt explaining the _why_
was probably harder.

No particular reason, other than having to write more tests perhaps.