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Message-ID: <20160409142759.25d8464a@redhat.com> Date: Sat, 9 Apr 2016 14:27:59 +0200 From: Jesper Dangaard Brouer <brouer@...hat.com> To: Tom Herbert <tom@...bertland.com> Cc: Brenden Blanco <bblanco@...mgrid.com>, "David S. Miller" <davem@...emloft.net>, Linux Kernel Network Developers <netdev@...r.kernel.org>, Alexei Starovoitov <alexei.starovoitov@...il.com>, Or Gerlitz <ogerlitz@...lanox.com>, Daniel Borkmann <daniel@...earbox.net>, Eric Dumazet <eric.dumazet@...il.com>, Edward Cree <ecree@...arflare.com>, john fastabend <john.fastabend@...il.com>, Thomas Graf <tgraf@...g.ch>, Johannes Berg <johannes@...solutions.net>, eranlinuxmellanox@...il.com, Lorenzo Colitti <lorenzo@...gle.com>, brouer@...hat.com Subject: Re: [RFC PATCH v2 1/5] bpf: add PHYS_DEV prog type for early driver filter On Sat, 9 Apr 2016 08:17:04 -0300 Tom Herbert <tom@...bertland.com> wrote: > One other API issue is how to deal with encapsulation. In this case a > header may be prepended to the packet, I assume there are BPF helper > functions and we don't need to return a new length or start? That reminds me. Do the BPF program need to know the head-room, then? -- 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
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