netdev - Re: [PATCH v5 0/6] Add eBPF hooks for cgroups

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Message-ID: <m3y42tlldz.fsf@neo.luffy.cx>
Date:   Thu, 15 Sep 2016 08:36:40 +0200
From:   Vincent Bernat <bernat@...fy.cx>
To:     Daniel Mack <daniel@...que.org>
Cc:     htejun@...com, daniel@...earbox.net, ast@...com,
        davem@...emloft.net, kafai@...com, fw@...len.de,
        pablo@...filter.org, harald@...hat.com, netdev@...r.kernel.org,
        sargun@...gun.me, cgroups@...r.kernel.org
Subject: Re: [PATCH v5 0/6] Add eBPF hooks for cgroups

 ❦ 12 septembre 2016 18:12 CEST, Daniel Mack <daniel@...que.org> :

> * The sample program learned to support both ingress and egress, and
>   can now optionally make the eBPF program drop packets by making it
>   return 0.

Ability to lock the eBPF program to avoid modification from a later
program or in a subcgroup would be pretty interesting from a security
perspective.
-- 
Use recursive procedures for recursively-defined data structures.
            - The Elements of Programming Style (Kernighan & Plauger)