From nobody Mon Feb 9 15:08:22 2026 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (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 42AF02BE053; Mon, 26 Jan 2026 03:55:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769399706; cv=none; b=gDsB3WnwOprCHK/42+i3pYOK4Y4eKT3JFiLE0V71rt8S6EfcDxuDmCXjJCv5PI50laLzTKxl0ahVeDwspCCHdzNGfh0/U/Xu17/nulPdni83bV3oOuwASq+0/q9ej8hX4N4TUrJMkgRxPMnH9DX7fbYY4jRtnN5t7nKNUHczbTk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769399706; c=relaxed/simple; bh=W82IWFtRj/1y4/x97gu7L3baDC7hNLAQ+ExjN7zODV0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=UVzzgg59Q7m4vNH9XMgXj4h6Z1Z+SbopGKMI8TMQ2hiM+LZPdTnQFXi1gXNo4IiL+7/IrIH/CEhuUFNfow237Yv5wRS4QcMXhgvt6jLUqIcpeKaAl+slcCTVfWsDeqbSf92tHzxlqvTKLWeZyml8CFSXmV3vjM+jZ9x7GO1fEjs= 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=6HiJM6+B; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=6HiJM6+B; arc=none smtp.client-ip=45.249.212.187 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="6HiJM6+B"; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="6HiJM6+B" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=UjhN52wNerqins45l5x2iyX7fBnvxt1Lrq+i7szdvDM=; b=6HiJM6+BUZ2Fm/JFW7fJ3RxGlNWNI0aY4hVrUlr3l8f3Q22Ls0B5jadEdjIYZeqm6poAWZwJX eV2VDCCntzh/2cU/E/Dkio9V5D4r8k9cFBcd9YNvsq7JlAoVgtqh9auzwKnIHZYMjROuuUkp+al WHZOm30mnnnqyKnD8eul8Sw= Received: from canpmsgout07.his.huawei.com (unknown [172.19.92.160]) by szxga01-in.huawei.com (SkyGuard) with ESMTPS id 4dzvmn3y8xz1BFpT; Mon, 26 Jan 2026 11:54:33 +0800 (CST) dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=UjhN52wNerqins45l5x2iyX7fBnvxt1Lrq+i7szdvDM=; b=6HiJM6+BUZ2Fm/JFW7fJ3RxGlNWNI0aY4hVrUlr3l8f3Q22Ls0B5jadEdjIYZeqm6poAWZwJX eV2VDCCntzh/2cU/E/Dkio9V5D4r8k9cFBcd9YNvsq7JlAoVgtqh9auzwKnIHZYMjROuuUkp+al WHZOm30mnnnqyKnD8eul8Sw= Received: from mail.maildlp.com (unknown [172.19.163.15]) by canpmsgout07.his.huawei.com (SkyGuard) with ESMTPS id 4dzvjD2LPbzLlSg; Mon, 26 Jan 2026 11:51:28 +0800 (CST) Received: from kwepemk500008.china.huawei.com (unknown [7.202.194.93]) by mail.maildlp.com (Postfix) with ESMTPS id 4F17840565; Mon, 26 Jan 2026 11:54:54 +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; Mon, 26 Jan 2026 11:54:53 +0800 From: Chen Zhen To: , , , , CC: , , , Subject: [PATCH v4 net 2/2] selftests: vlan: add test for turn on hw offload with reorder_hdr off Date: Mon, 26 Jan 2026 12:04:26 +0800 Message-ID: <20260126040426.2570396-3-chenzhen126@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20260126040426.2570396-1-chenzhen126@huawei.com> References: <20260126040426.2570396-1-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: kwepems200002.china.huawei.com (7.221.188.68) 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 | 31 +++++++++++++++++++ 2 files changed, 32 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 45c4ea381bc3..3c9797d8dff7 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -114,6 +114,7 @@ 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..ac7140539d95 --- /dev/null +++ b/tools/testing/selftests/net/vlan_hw_offload.sh @@ -0,0 +1,31 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# shellcheck disable=3DSC2329 + +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