netdev - Re: [PATCH RFC 0/2] ila: ilarouter bpf code for tc and xdp

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Date:   Fri, 23 Sep 2016 20:06:52 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     Alexei Starovoitov <ast@...com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Tom Herbert <tom@...bertland.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Thomas Graf <tgraf@...g.ch>, <netdev@...r.kernel.org>,
        brouer@...hat.com
Subject: Re: [PATCH RFC 0/2] ila: ilarouter bpf code for tc and xdp


On Fri, 23 Sep 2016 10:16:33 -0700 Alexei Starovoitov <ast@...com> wrote:

> From: Aaron Yue <haoxuany@...rew.cmu.edu>
> 
> Jesper,
> 
> here is old email and cover letter that didn't make it to the list
> due to vger outage (I guess).
> The verifier patch that Aaron is talking about has landed long ago.
> 
> The dataplane of ILA router is very short and simple.

Yes, looks very simple indeed! Cool! :-)


> Control plane is very different matter. It's not ready for prime time yet.
> 
> ----------
> 
> This patch contains the tc and xdp implementation of kernelspace bpf code.
> It requires userspace to insert to the ILA bpf maps, in tc's case, the 
> precomputed ILA mappings, and in xdp's case, both the precomputed ILA
> mappings and the MAC address.
> 
> The xdp bpf code also requires a verifier patch to allow direct map access
> from the packet (will be patched in by Alexei).
> 
> Aaron Yue (2):
>   samples/bpf: ilarouter for tc
>   samples/bpf: ilarouter for xdp
> 
>  samples/bpf/Makefile        |   2 +
>  samples/bpf/ila.h           |  80 ++++++++++++++++++++++++++++
>  samples/bpf/ilarouter_tc.c  | 124 ++++++++++++++++++++++++++++++++++++++++++++
>  samples/bpf/ilarouter_xdp.c |  88 +++++++++++++++++++++++++++++++
>  samples/bpf/inet_helper.h   |  38 ++++++++++++++
>  5 files changed, 332 insertions(+)
>  create mode 100644 samples/bpf/ila.h
>  create mode 100644 samples/bpf/ilarouter_tc.c
>  create mode 100644 samples/bpf/ilarouter_xdp.c
>  create mode 100644 samples/bpf/inet_helper.h

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  Author of http://www.iptv-analyzer.org
  LinkedIn: http://www.linkedin.com/in/brouer