linux-kernel - [PATCH bpf-next 0/2] selftests/bpf: enfoce SO

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Message-Id: <20251105-start-server-soreuseaddr-v1-0-1bbd9c1f8d65@bootlin.com>
Date: Wed, 05 Nov 2025 09:22:47 +0100
From: Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
To: Andrii Nakryiko <andrii@...nel.org>, 
 Eduard Zingerman <eddyz87@...il.com>, Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, 
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: ebpf@...uxfoundation.org, 
 Bastien Curutchet <bastien.curutchet@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, bpf@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
Subject: [PATCH bpf-next 0/2] selftests/bpf: enfoce SO_REUSEADDR in basic
 test servers

Hello,
This small series is another follow-up to [1], in which I misunderstood
Martin's initial feedback (see [2]). I proposed to make tc-tunnel apply
SO_REUSEPORT once server is brought up. This series updates
start_server_addr to really apply Martin's proposal after his
clarification [3]

[1] https://lore.kernel.org/bpf/20251031-tc_tunnel_improv-v1-0-0ffe44d27eda@bootlin.com/
[2] https://lore.kernel.org/bpf/efa3540a-1f52-46ca-9f49-e631a5e3e48c@linux.dev/
[3] https://lore.kernel.org/bpf/4cbabdf1-af2c-490a-a41a-b40c1539c1cb@linux.dev/

Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
---
Alexis Lothoré (eBPF Foundation) (2):
      selftests/bpf: systematically add SO_REUSEADDR in start_server_addr
      selftests/bpf: use start_server_str rather than start_reuseport_server in tc_tunnel

 tools/testing/selftests/bpf/network_helpers.c      |  9 +++++++-
 .../selftests/bpf/prog_tests/test_tc_tunnel.c      | 27 ++++++++++++----------
 2 files changed, 23 insertions(+), 13 deletions(-)
---
base-commit: de0745f7cc98146c70a020bc3a1b73c7f3405282
change-id: 20251104-start-server-soreuseaddr-e442446e2d37

Best regards,
-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com