netdev - Re: [PATCH net-next] bpf: fix verifier issue at check_packet_ptr

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Message-ID: <CALDO+SbdmEh6paAT-x7PJvJN0ezTk14AmLXTxBtZ_A87PwVtmQ@mail.gmail.com>
Date:   Fri, 3 Feb 2017 08:20:19 -0800
From:   William Tu <u9012063@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] bpf: fix verifier issue at check_packet_ptr_add

On Thu, Feb 2, 2017 at 10:19 PM, Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
> On Thu, Feb 02, 2017 at 09:31:06PM -0800, William Tu wrote:
>>
>> Yes, this is auto-generated. We want to use P4 2016 as front end to
>> generate ebpf for XDP.
>
> P4 2016 front-end ? is it public? Is there a 2017 version? ;)
> just curious.
>
the P4_16 is the latest version.
https://github.com/p4lang/p4c
it has ebpf backend for tc, we want to add ebpf backend for xdp.

--William