From: KaFai Wan <kafai.wan@linux•dev>
To: martin.lau@linux•dev, daniel@iogearbox•net,
john.fastabend@gmail•com, sdf@fomichev•me, ast@kernel•org,
andrii@kernel•org, eddyz87@gmail•com, memxor@gmail•com,
song@kernel•org, yonghong.song@linux•dev, jolsa@kernel•org,
davem@davemloft•net, edumazet@google•com, kuba@kernel•org,
pabeni@redhat•com, horms@kernel•org, shuah@kernel•org,
jiayuan.chen@linux•dev, kafai.wan@linux•dev, bpf@vger•kernel.org,
netdev@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-kselftest@vger•kernel.org
Subject: [PATCH bpf v3 0/2] bpf: Reject TCP_NODELAY in TCP header option callbacks
Date: Fri, 17 Apr 2026 17:20:33 +0800 [thread overview]
Message-ID: <20260417092035.2299913-1-kafai.wan@linux.dev> (raw)
This small patchset is about avoid infinite recursion in TCP header option
callbacks via TCP_NODELAY setsockopt.
v3:
- Remove CONFIG_INET check and add comment (Martin and Jiayuan)
- Fix the test case (Martin)
v2:
- Reject TCP_NODELAY in bpf_sock_ops_setsockopt() (AI and Martin)
https://lore.kernel.org/bpf/20260416112308.1820332-1-kafai.wan@linux.dev/
v1:
https://lore.kernel.org/bpf/20260414112310.1285783-1-kafai.wan@linux.dev/
---
KaFai Wan (2):
bpf: Reject TCP_NODELAY in TCP header option callbacks
selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks
net/core/filter.c | 6 ++++++
.../selftests/bpf/prog_tests/tcp_hdr_options.c | 12 +++++++++++-
.../bpf/progs/test_misc_tcp_hdr_options.c | 15 ++++++++++++++-
3 files changed, 31 insertions(+), 2 deletions(-)
--
2.43.0
next reply other threads:[~2026-04-17 9:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-17 9:20 KaFai Wan [this message]
2026-04-17 9:20 ` [PATCH bpf v3 1/2] bpf: Reject TCP_NODELAY in TCP header option callbacks KaFai Wan
2026-04-17 10:10 ` bot+bpf-ci
2026-04-17 10:26 ` Jiayuan Chen
2026-04-17 9:20 ` [PATCH bpf v3 2/2] selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks KaFai Wan
2026-04-17 10:45 ` Jiayuan Chen
2026-04-17 16:25 ` Martin KaFai Lau
2026-04-18 2:19 ` KaFai Wan
2026-04-20 17:09 ` Martin KaFai Lau
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