From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-173.mta0.migadu.com (out-173.mta0.migadu.com [91.218.175.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3D4D1A9F97 for ; Fri, 17 Apr 2026 09:20:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776417661; cv=none; b=pGalpdBR5eBA6ZWVU5jh0kAUNcHWHDw4V0uVSylAGC8eH30wwQ2AqPgbx9WPRBo3BzJlSvGQ1fj+2JxDV68MVBu9U+W0YAOz0SzetUR6cj/z6JumZwPXjbRzZASu3ZeDmh7emJaPXUnBGaoX0oqj/tX+8uQKAXpXHgd9RRdn274= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776417661; c=relaxed/simple; bh=gGL8y9AF4lTaxH7I3Hf+h4oTv5K4c3+5pygQgEdtzCg=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=DfsKMgifBjbzu0BcXfNTlBNM/9+QfwxpXi3teVVQFvBu8u2bKZXAIdwckv6NAHWulMY62/0Tl7itH4NO+F6YhLJ1nuJf41QLO5xeq5fjry6EWTLGXoCSo8sWmIqCoi/RhKzQ4HacsyBr0Xie69wFKwjnsgFSOY7X8Xc8q77VPXc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=JI3f5Isa; arc=none smtp.client-ip=91.218.175.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="JI3f5Isa" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776417656; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=i4FscWzLPOcyfss0x+6DvY38XSJbaQ6nBMjNqlK6dJE=; b=JI3f5IsaTr2y2qTAMDDHo9qIju1CQPcgv02W0eUzGNGjFz9lg9CCqYN11r1MJlW/ZbSGtC T0BgxX7YAqKB3krNQxFjUQNe71h12nZdjfAZqmIulwlQHN5v6DFVzf8mbc5KCN6hNHQqNA 3jdEVIU4NbeKSkltpuxFxksABA33Euc= From: KaFai Wan 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 Message-ID: <20260417092035.2299913-1-kafai.wan@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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