netdev - Re: [RFC bpf-next v2 1/9] net: introduce __init_skb{,_data,

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Message-ID: <20190321160057.57u7ahijddqwtfdd@ast-mbp.dhcp.thefacebook.com>
Date:   Thu, 21 Mar 2019 09:00:59 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Stanislav Fomichev <sdf@...ichev.me>
Cc:     Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Stanislav Fomichev <sdf@...gle.com>,
        Network Development <netdev@...r.kernel.org>,
        bpf@...r.kernel.org, David Miller <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        simon.horman@...ronome.com, Willem de Bruijn <willemb@...gle.com>,
        Petar Penkov <peterpenkov96@...il.com>
Subject: Re: [RFC bpf-next v2 1/9] net: introduce __init_skb{,_data,_shinfo}
 helpers

On Thu, Mar 21, 2019 at 08:44:33AM -0700, Stanislav Fomichev wrote:
> 
> If we can agree that we switch everything to xpd-like, do we deprecate the
> skb-one?

This whole discussion that have been going on for long time is an indication
that initial bpf flow dissector concept was not thought through
and I regret on merging it in the first place.
Adding more hacks on top of it with fake skbs is not going to make it any better.
Since it's been in the official release we cannot remove it now.