From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-172.mta1.migadu.com (out-172.mta1.migadu.com [95.215.58.172]) (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 F13FA3B9DAC for ; Tue, 14 Apr 2026 11:23:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776165834; cv=none; b=e9+lWCsScdJRgZrZNdgxs6KCbJ1pzFIafDmSOb4MN8HTweArTgIts3rFUmqSFsCGwW1iuR/NBn7oXtuZWX9Zrk0JvhsnA7Gk1LllWenu0iVBCrtd9Qy1Xty6lH7JHYPmAoUgY9Zhud6HdEKoZ6kkZQiQdcXp8uYsF23IphSLbx4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776165834; c=relaxed/simple; bh=0vM8Wm0yvMs1PHZRliZhxIPfiXZ2NOCQ06VtNDnSSis=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=ZJsfvwW8k/+/eV3ueI58dwmtA4WVmBJodI+aDWinz/BlJpt8UAx7q/ZYSDrNWE30C0I3Xe9LJDLEquF85Qzzo6LBePjnlUBOp8SoI77xRa9xFqSoHriDmfNxfuam+MdmZRw/Skx/q3YDmQ04MNzB/TYs74l4mWo5uQVvTSDaElY= 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=N61uzNTv; arc=none smtp.client-ip=95.215.58.172 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="N61uzNTv" 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=1776165830; 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=nD3+pYkuUta613cN19y/PkEcTwKQ+sxBqJw2XDXKABc=; b=N61uzNTvbqRwJAPfiGs2bl1u9zlbXJ5Q9XC7AEX2fSmGy/yIm0C7aQM+fcz1qOGAs13T7H TjC/zsy6kPDbYtxxTH2YhBMGMbadzmTz3uifuW01J51dCRIpWmyYrXPJCQfc8YjC2NEwaS COkYCs+LVBgN/fJwE2Gqiv2MP2QGDf0= From: KaFai Wan To: edumazet@google.com, ncardwell@google.com, kuniyu@google.com, davem@davemloft.net, dsahern@kernel.org, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, memxor@gmail.com, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, shuah@kernel.org, kafai.wan@linux.dev, sdf@fomichev.me, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next 0/2] bpf: tcp: Reject TCP_NODELAY from BPF hdr opt callbacks Date: Tue, 14 Apr 2026 19:23:08 +0800 Message-ID: <20260414112310.1285783-1-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 bpf_skops_hdr_opt_len() via TCP_NODELAY setsockopt. --- KaFai Wan (2): bpf: tcp: Reject TCP_NODELAY from BPF hdr opt callbacks selftests/bpf: Cover TCP_NODELAY in hdr opt callback net/ipv4/tcp.c | 5 ++- .../bpf/prog_tests/tcp_hdr_options.c | 34 +++++++++++++++++++ .../bpf/progs/test_misc_tcp_hdr_options.c | 18 ++++++++++ 3 files changed, 56 insertions(+), 1 deletion(-) -- 2.43.0