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Date:   Wed, 27 Apr 2022 14:34:48 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Lina.Wang@...iatek.com, "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        linux-kernel@...r.kernel.org, Maciej enczykowski <maze@...gle.com>,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH v5 1/3] selftests: bpf: add test for bpf_skb_change_proto

On 4/18/22 3:52 AM, Lina.Wang@...iatek.com wrote:
[...]
>> OT: In Cilium we run similar NAT46/64 translation for XDP and tc/BPF
>> for our LB services [4] (that is,
>> v4 VIP with v6 backends, and v6 VIP with v4 backends).
>>
>>     [4]
>> https://github.com/cilium/cilium/blob/master/bpf/lib/nat_46x64.h
>>         
>> https://github.com/cilium/cilium/blob/master/test/nat46x64/test.sh
> 
> It is complicated for me, my case doesnot use XDP driver.I use xdp_dummy
> just to enable veth NAPI GRO, not real XDP driver code. My test case is
> simple and enough for my patch, I think. I have covered tcp and udp,
> normal and SO_SEGMENT.

Ok, fair enough, then lets resend with the minor fixups as discussed
earlier and worst case we can do the test_progs integration at a later
point to avoid blocking the fix. At least there is something runnable
under net/bpf selftests.. even if not yet in BPF CI but we can follow-up
on it later. Thanks Lina!

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