netdev - Re: [PATCH v2 net-next 1/5] bpf: Refactor cgroups code in prep for new type

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Message-ID: <20161031174942.GF32374@pox.localdomain>
Date:   Mon, 31 Oct 2016 18:49:42 +0100
From:   Thomas Graf <tgraf@...g.ch>
To:     Daniel Mack <daniel@...que.org>
Cc:     David Ahern <dsa@...ulusnetworks.com>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        ast@...com, daniel@...earbox.net, maheshb@...gle.com
Subject: Re: [PATCH v2 net-next 1/5] bpf: Refactor cgroups code in prep for
 new type

On 10/31/16 at 06:16pm, Daniel Mack wrote:
> On 10/31/2016 06:05 PM, David Ahern wrote:
> > On 10/31/16 11:00 AM, Daniel Mack wrote:
> >> Yeah, I'm confused too. I changed that name in my v7 from 
> >> BPF_PROG_TYPE_CGROUP_SOCK to BPF_PROG_TYPE_CGROUP_SKB on David's
> >> (Ahern) request. Why is it now renamed again?
> > 
> > Thomas pushed back on adding another program type in favor of using
> > subtypes. So this makes the program type generic to CGROUP and patch
> > 2 in this v2 set added Mickaël's subtype patch with the socket
> > mangling done that way in patch 3.
> > 
> 
> Fine for me. I can change it around again.

I would like to hear from Daniel B and Alexei as well. We need to
decide whether to use subtypes consistently and treat prog types as
something more high level or whether to bluntly introduce a new prog
type for every distinct set of verifier limits. I will change lwt_bpf
as well accordingly.