netdev - Re: [PATCH net-next v2 3/3] tools: bpftool: add documentation

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Message-ID: <881bcc51-015c-097e-a5a4-1f2312a3d9f1@gmail.com>
Date:   Tue, 3 Oct 2017 08:39:36 -0700
From:   David Ahern <dsahern@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     netdev@...r.kernel.org, daniel@...earbox.net,
        oss-drivers@...ronome.com,
        David Beckett <david.beckett@...ronome.com>
Subject: Re: [PATCH net-next v2 3/3] tools: bpftool: add documentation

On 10/2/17 9:29 PM, Alexei Starovoitov wrote:
> On Mon, Oct 02, 2017 at 06:35:09PM -0700, Jakub Kicinski wrote:
>>> will pretty print them as verifier output as well?
>>
>> We tried to use LLVM as a library for this but the interface is
>> painfully unstable and it's a heavy dependency.  The current thinking
>> is to try to put the instruction printing code in some higher level
>> library, but I would rather leave that as a follow up.
> 
> follow up, of course.
> Not depending on llvm is must have for this tool.
> I think we need tiny and simple tools first.
> Since you're using gpl+bsd license for this tool I think
> it would be fine to copy-paste verifier's pretty print code into it.
> 

I have done that including integrating it into bpf-tool.