From nobody Mon Feb 9 15:08:24 2026 Received: from canpmsgout10.his.huawei.com (canpmsgout10.his.huawei.com [113.46.200.225]) (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 464634A33; Wed, 7 Jan 2026 03:24:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.225 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767756256; cv=none; b=TqkPQm635j+OsG/NZEJ50Ruy4hTavIMWg5Mf19X5iz4KxiiC+vklfciVbgj9fd7LBtqBYjmMux0D7fh7z5Dd3WfopgPiFmGBmby8Oa/S/8/H9EKXpMKj7d5XsBjf4g0ajn4ZzGuDI/b3Lcfzpnj9nV36qkzcCKLUFROU3RP1qU8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767756256; c=relaxed/simple; bh=qYSFavTx4Bunh22tcP38Pe6RPOXmFIoFPHIv/OaWowo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=k1Nyn25EMjJZFJ9iIsSuXil0XRTlSvAOSQJFVW3fCxS9P1FS3st2BoB7F7EgZB7vXuNNc7CZa5vZYDFR3VkfrZHrl/500DjuGVW90D1lkMXRiSuOExAZD7riewmqcrlj/hK2kMjMDhmGHEP+OSZM1O80JcCv5ZgwmQMJ7ItmFpw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=Hc/2sNQK; arc=none smtp.client-ip=113.46.200.225 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="Hc/2sNQK" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=i0wbDJ8EbrfVs8rGUwHoNmMg18inRgZDVrriqEaVpUE=; b=Hc/2sNQKB8vRvEYmgkARrbslVtd8ySf7X5qApQZ+uvkHq+xmNzAIksz6GSFNC+X4Hl8Hl3TCJ ON+oCcnOT6qHIhgveX6ukftOIY/OwB5dn4YicBz71wIUOa1TYnURRyUXWpqxiPKLu/4zAy0f6AE 4BcnzHqesIN6/lEWm4TQOH0= Received: from mail.maildlp.com (unknown [172.19.162.92]) by canpmsgout10.his.huawei.com (SkyGuard) with ESMTPS id 4dmCwp4R6Vz1K96g; Wed, 7 Jan 2026 11:20:58 +0800 (CST) Received: from kwepemk500008.china.huawei.com (unknown [7.202.194.93]) by mail.maildlp.com (Postfix) with ESMTPS id C9FDA40565; Wed, 7 Jan 2026 11:24:11 +0800 (CST) Received: from huawei.com (10.50.159.234) by kwepemk500008.china.huawei.com (7.202.194.93) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 7 Jan 2026 11:24:10 +0800 From: Chen Zhen To: , , , , CC: , , , Subject: [PATCH v2 net 2/2] selftests: vlan: add test for turn on hw offload with reorder_hdr off Date: Wed, 7 Jan 2026 11:34:23 +0800 Message-ID: <20260107033423.1885071-3-chenzhen126@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20260107033423.1885071-1-chenzhen126@huawei.com> References: <20260107033423.1885071-1-chenzhen126@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems100002.china.huawei.com (7.221.188.206) To kwepemk500008.china.huawei.com (7.202.194.93) Content-Type: text/plain; charset="utf-8" If vlan dev was created with reorder_hdr off and hw offload both off but up with hw offload on, it will trigger a skb_panic bug in vlan_dev_hard_header(). Add a test to automatically catch re-occurrence of the issue. Suggested-by: Jakub Kicinski Signed-off-by: Chen Zhen --- tools/testing/selftests/net/Makefile | 1 + .../testing/selftests/net/vlan_hw_offload.sh | 30 +++++++++++++++++++ 2 files changed, 31 insertions(+) create mode 100755 tools/testing/selftests/net/vlan_hw_offload.sh diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests= /net/Makefile index b66ba04f19d9..8b50448a01cd 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -113,6 +113,7 @@ TEST_PROGS :=3D \ veth.sh \ vlan_bridge_binding.sh \ vlan_hw_filter.sh \ + vlan_hw_offload.sh \ vrf-xfrm-tests.sh \ vrf_route_leaking.sh \ vrf_strict_mode_test.sh \ diff --git a/tools/testing/selftests/net/vlan_hw_offload.sh b/tools/testing= /selftests/net/vlan_hw_offload.sh new file mode 100755 index 000000000000..5c49cc2525f2 --- /dev/null +++ b/tools/testing/selftests/net/vlan_hw_offload.sh @@ -0,0 +1,30 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +setup() { + ip link add veth0 type veth peer name veth1 + ip link set veth0 up + ip link set veth1 up +} + +cleanup() { + ip link delete veth0 2>/dev/null +} + +#turn on hw offload and set up vlan dev with reorder_hdr off +test_vlan_hw_offload_toggle_crash() { + ethtool -K veth0 tx-vlan-hw-insert off + ip link add link veth0 name veth0.10 type vlan id 10 reorder_hdr off + ethtool -K veth0 tx-vlan-hw-insert on + + # set up vlan dev and it will trigger ndisc + ip link set veth0.10 up + ip -6 route show dev veth0.10 +} + +trap cleanup EXIT + +setup +test_vlan_hw_offload_toggle_crash + +exit 0 --=20 2.33.0