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Date: Thu, 1 Jun 2017 12:52:28 -0600 From: David Ahern <dsahern@...il.com> To: Alexei Starovoitov <ast@...com>, Jakub Kicinski <kubakici@...pl>, Martin KaFai Lau <kafai@...com>, Hannes Frederic Sowa <hannes@...essinduktion.org> Cc: netdev@...r.kernel.org, Daniel Borkmann <daniel@...earbox.net>, kernel-team@...com Subject: Re: [PATCH v2 net-next 0/8] Introduce bpf ID On 6/1/17 12:27 PM, Alexei Starovoitov wrote: > 'I want to retrieve original instructions' is not a problem. It's a > push for 'solution'. Explaining 'why' you want to see original > instructions would describe the actual problem. I have explained this. You are creating this hyper-complex almost completely invisible infrastructure. You are enabling binary blobs that can bypass the network stack and modify packets with almost no introspection on what is happening. BPF code can from a variety of sources -- OS vendors, upstream repos, 3rd party vendors (eg., H/W vendors), and "in-house" development. Each will swear to the end that any observed problem is not with their code. In my experience, it falls on to the OS and kernel experts to figure out why Linux is breaking something. To do that we need tools to look at what code is running where and something that can be used in production environments not requiring a disruption to the service that the box is providing.
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