From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-179.mta0.migadu.com (out-179.mta0.migadu.com [91.218.175.179]) (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 655793932FE for ; Thu, 16 Apr 2026 11:24:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776338665; cv=none; b=nKalqjN/qrdjiTA/m0OfQ3+UGbRcnvAwRnk67BMUCIPcdO1y/Ryq6oQK/Zg3qVd6wcVhGkIeSd5fP2G9c/Kit1QD8Kweb7my5ErjvARePi5FLCtzBQY8kK6uKhXs6TrnI9NCyJOgHvrIdwv19sfHwFQBJrZK0JsL/e+47Lxu5JE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776338665; c=relaxed/simple; bh=wkO+W3b4OI89v/KKCXuU7JOPO3UqcCSDyYqANd9YPOg=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=nxVgM/djg1AMrzZnyvhEcYxL80Q0b512qk3X+O2zCUovLKNvaRkZdxU+LSHGtQl9luxf34vMOXIKbUDeP7mg4t2OpDFwCbFPDhufLnnFMuWuCek8bFR/WbxOf2gzm0sXgBQdfYMju4JQ8p/dQsCbVYLqkdCszt9U3i7y0MRW9Ic= 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=cRkm60GB; arc=none smtp.client-ip=91.218.175.179 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="cRkm60GB" 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=1776338652; 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=GQzGijXLGNbuq7icCuIcljXiHVxyhjq8+F6R9MdoBzA=; b=cRkm60GBXbJRlkyJZBd6kPmGCrRZ8WN5lQUoYW0p0B7QNOanhZO04xlt8a8IgEJjCfX47F M8B4+i4bXpHMGwWJz4zGht1bjucGypK2DdnPNVMQEyA5euAdPbUhBIsIStGFJm4YyZjmEE hvyLVSU2P1IAYNoWXmJbTePnK1+l2W8= 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 v2 0/2] bpf: Reject TCP_NODELAY in TCP header option callbacks Date: Thu, 16 Apr 2026 19:23:06 +0800 Message-ID: <20260416112308.1820332-1-kafai.wan@linux.dev> Precedence: bulk X-Mailing-List: linux-kselftest@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. v2: - Reject TCP_NODELAY in bpf_sock_ops_setsockopt() (AI and Martin) 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 | 5 ++ .../bpf/prog_tests/tcp_hdr_options.c | 54 +++++++++++++++++++ .../bpf/progs/test_misc_tcp_hdr_options.c | 40 ++++++++++++++ 3 files changed, 99 insertions(+) -- 2.43.0