netdev - Re: [PATCH iproute2 -next v2] tc, bpf: finalize eBPF support for cls and act front-end

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Date:	Wed, 1 Apr 2015 23:15:26 +0100
From:	Thomas Graf <tgraf@...g.ch>
To:	Daniel Borkmann <daniel@...earbox.net>
Cc:	stephen@...workplumber.org, ast@...mgrid.com, jiri@...nulli.us,
	jhs@...atatu.com, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 -next v2] tc, bpf: finalize eBPF support for cls
 and act front-end

On 04/01/15 at 05:57pm, Daniel Borkmann wrote:
> This work finalizes both eBPF front-ends for the classifier and action
> part in tc, it allows for custom ELF section selection, a simplified tc
> command frontend (while keeping compat), reusing of common maps between
> classifier and actions residing in the same object file, and exporting
> of all map fds to an eBPF agent for handing off further control in user
> space.
> 
> It also adds an extensive example of how eBPF can be used, and a minimal
> self-contained example agent that dumps map data. The example is well
> documented and hopefully provides a good starting point into programming
> cls_bpf and act_bpf.
> 
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Cc: Alexei Starovoitov <ast@...mgrid.com>
> Cc: Jiri Pirko <jiri@...nulli.us>
> Cc: Jamal Hadi Salim <jhs@...atatu.com>

The examples for both the classifier/action and the map fd handover
are very nicely written and help a lot to understand how all of
this works.

FWIW:
Acked-by: Thomas Graf <tgraf@...g.ch>
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