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

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Message-ID: <65b46edc-02bd-415c-4b1d-af36928d22da@cumulusnetworks.com>
Date:   Sun, 13 Nov 2016 20:51:59 -0700
From:   David Ahern <dsa@...ulusnetworks.com>
To:     Thomas Graf <tgraf@...g.ch>, Daniel Mack <daniel@...que.org>
Cc:     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 11:49 AM, Thomas Graf wrote:
> 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.
> 

Alexei / Daniel - any comments/preferences on subtypes vs program types?