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Message-ID: <CAADnVQLaepgpoH4qjbhAmq-+JLiAXyJ=4nXgbu6NSkZmpF9ghg@mail.gmail.com>
Date: Mon, 10 Jul 2023 17:37:01 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Daniel Xu <dxu@...uu.xyz>
Cc: Andrii Nakryiko <andrii@...nel.org>, Shuah Khan <shuah@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Alexei Starovoitov <ast@...nel.org>,
Florian Westphal <fw@...len.de>,
Martin KaFai Lau <martin.lau@...ux.dev>,
Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>,
Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
Mykola Lysenko <mykolal@...com>,
LKML <linux-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@...r.kernel.org>,
netfilter-devel <netfilter-devel@...r.kernel.org>,
David Ahern <dsahern@...nel.org>
Subject: Re: [PATCH bpf-next v3 6/6] bpf: selftests: Add defrag selftests
On Fri, Jul 7, 2023 at 9:51 AM Daniel Xu <dxu@...uu.xyz> wrote:
>
> These selftests tests 2 major scenarios: the BPF based defragmentation
> can successfully be done and that packet pointers are invalidated after
> calls to the kfunc. The logic is similar for both ipv4 and ipv6.
>
> In the first scenario, we create a UDP client and UDP echo server. The
> the server side is fairly straightforward: we attach the prog and simply
> echo back the message.
>
> The on the client side, we send fragmented packets to and expect the
> reassembled message back from the server.
>
> Signed-off-by: Daniel Xu <dxu@...uu.xyz>
The patches look good, but new tests are failing on arm64.
test_bpf_ip_check_defrag_ok:FAIL:server recvfrom unexpected server
recvfrom: actual -1 < expected 0
see BPF CI.
Feels like a timing issue, but pls take a look.
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