From patchwork Tue May 9 07:04:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 13235406 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 70EAE3C2C for ; Tue, 9 May 2023 07:06:30 +0000 (UTC) Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2057.outbound.protection.outlook.com [40.107.244.57]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23A747AA4 for ; Tue, 9 May 2023 00:06:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=dswG4b6J6wzIFnjmAsdcHjvBpQp32K2SBwrNRNWJkKzq2R2HFJ/v5fJ4t2nS1CbdnfSIuFC6DySeRAGlGeCKdNMrx/w/NObHC4dbIOtKJsXjbMXqZ83nFsjfCwky4tkEDs4nMMPEC4hCDNk9sgCr/MJHOvGzYgXLNu35g8j/+BEc+yP7oTysOoTCuM7yQmmru2bsbwdK+rywb5/W7n5WBcG58zbsXuSMXoPHUevYH5NUX6qPnxv7CADez++0vQSij3Wwp0X60rueoaxHHriNvC6GPJS/8s676MEnmw/sdq3KdGgoztoz5c61059/R9Wq1zB/2KWjbBcuLuOvNaQnDg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=mKdTRS0ZIQEdAbs+I0FkXntaP1eXB6RVCBy0Hb4d49U=; b=a3E/ZNuL1T0URNgobnL5bl9TbyJ9lOp9WzzFN8jVBRJriFXULGhhhz3sAK3yOHKcELKnfPysmxfy/niP/gCqRu0JC6IVSKI4zb157Sletj24CSZ3D5yTLWOpqTcTYRVRF79m9DCUO3VYaE7Qs1EFgLsIIHepDffqbLIh6HSBP/EnWV3F8HAEN/4qJsvyOMlQ6G3ME5DCyQ75Xqo2iOALNvTbYPB01W/3FqQU+xfQuIqO6+PGhAHPHeFMh9tr/X69u2N6oC9S7UADx0o3o/19l5WTTqMdq0PRAnbSjUSXbj+Ww4w8loNkCsopFhqkNRfptjxBpb3nNoZ3gNPTudH2pw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=mKdTRS0ZIQEdAbs+I0FkXntaP1eXB6RVCBy0Hb4d49U=; b=tMfMvr/tPp/QLg7T2Fk3f9sTbO2nQ0GmalSTcqPFvOBiVCfcEbXIUVfG6k2/mG0/68Mr9bNv+JEKE2aEKvQYtiy51X4D1IhOoMPSnAu6IBUgwWzQBY0lLI3cuapUJNcuKnEKmTpqCYJ0AaiIntbVZV+SY/ek0k1nuAyg0qFzL042aB3AQ1W8OD6ikxWi9bUbXP6x5H7W6srXGxvHlU88xHlGpbPNzWPYyOvwG5A4/7Drj4lLEwFblICvJQuz7aWTMwa08ZKrcVM3+Xi71f6GhE2klcA8/Y8jmC0jBaCxpPvli6c+DdZBf40SmyaGXa1JqTu1nXXI7wIBrh9xKvjmpw== Received: from BN9PR03CA0217.namprd03.prod.outlook.com (2603:10b6:408:f8::12) by CY8PR12MB7337.namprd12.prod.outlook.com (2603:10b6:930:53::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6363.32; Tue, 9 May 2023 07:06:23 +0000 Received: from BN8NAM11FT039.eop-nam11.prod.protection.outlook.com (2603:10b6:408:f8:cafe::cf) by BN9PR03CA0217.outlook.office365.com (2603:10b6:408:f8::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6363.33 via Frontend Transport; Tue, 9 May 2023 07:06:23 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by BN8NAM11FT039.mail.protection.outlook.com (10.13.177.169) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6363.33 via Frontend Transport; Tue, 9 May 2023 07:06:22 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.5; Tue, 9 May 2023 00:06:06 -0700 Received: from dev-r-vrt-155.mtr.labs.mlnx (10.126.230.37) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Tue, 9 May 2023 00:06:02 -0700 From: Ido Schimmel To: , CC: , , , , , , , , , , , Ido Schimmel Subject: [RFC PATCH net-next 5/5] selftests: forwarding: Add layer 2 miss test cases Date: Tue, 9 May 2023 10:04:46 +0300 Message-ID: <20230509070446.246088-6-idosch@nvidia.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230509070446.246088-1-idosch@nvidia.com> References: <20230509070446.246088-1-idosch@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.126.230.37] X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT039:EE_|CY8PR12MB7337:EE_ X-MS-Office365-Filtering-Correlation-Id: 8a878674-6655-47f7-652d-08db505be5cf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(39860400002)(136003)(376002)(396003)(346002)(451199021)(46966006)(40470700004)(36840700001)(8676002)(82310400005)(7416002)(8936002)(5660300002)(41300700001)(316002)(30864003)(4326008)(36860700001)(83380400001)(107886003)(16526019)(40460700003)(86362001)(70586007)(70206006)(26005)(1076003)(36756003)(186003)(6666004)(2906002)(478600001)(66574015)(336012)(47076005)(40480700001)(2616005)(426003)(110136005)(356005)(82740400003)(7636003)(54906003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 May 2023 07:06:22.9002 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a878674-6655-47f7-652d-08db505be5cf X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT039.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7337 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Add test cases to verify that the bridge driver correctly marks layer 2 misses only when it should and that the flower classifier can match on this metadata. Example output: # ./tc_flower_l2_miss.sh TEST: L2 miss - Unicast [ OK ] TEST: L2 miss - Multicast (IPv4) [ OK ] TEST: L2 miss - Multicast (IPv6) [ OK ] TEST: L2 miss - Link-local multicast (IPv4) [ OK ] TEST: L2 miss - Link-local multicast (IPv6) [ OK ] TEST: L2 miss - Broadcast [ OK ] Signed-off-by: Ido Schimmel --- .../testing/selftests/net/forwarding/Makefile | 1 + .../net/forwarding/tc_flower_l2_miss.sh | 343 ++++++++++++++++++ 2 files changed, 344 insertions(+) create mode 100755 tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile index a474c60fe348..9d0062b542e5 100644 --- a/tools/testing/selftests/net/forwarding/Makefile +++ b/tools/testing/selftests/net/forwarding/Makefile @@ -83,6 +83,7 @@ TEST_PROGS = bridge_igmp.sh \ tc_chains.sh \ tc_flower_router.sh \ tc_flower.sh \ + tc_flower_l2_miss.sh \ tc_mpls_l2vpn.sh \ tc_police.sh \ tc_shblocks.sh \ diff --git a/tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh b/tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh new file mode 100755 index 000000000000..fbf0a960b2c8 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh @@ -0,0 +1,343 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# +-----------------------+ +----------------------+ +# | H1 (vrf) | | H2 (vrf) | +# | + $h1 | | $h2 + | +# | | 192.0.2.1/28 | | 192.0.2.2/28 | | +# | | 2001:db8:1::1/64 | | 2001:db8:1::2/64 | | +# +----|------------------+ +------------------|---+ +# | | +# +----|-------------------------------------------------------------------|---+ +# | SW | | | +# | +-|-------------------------------------------------------------------|-+ | +# | | + $swp1 BR $swp2 + | | +# | +-----------------------------------------------------------------------+ | +# +----------------------------------------------------------------------------+ + +ALL_TESTS=" + test_l2_miss_unicast + test_l2_miss_multicast + test_l2_miss_ll_multicast + test_l2_miss_broadcast +" + +NUM_NETIFS=4 +source lib.sh +source tc_common.sh + +h1_create() +{ + simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 +} + +h1_destroy() +{ + simple_if_fini $h1 192.0.2.1/28 2001:db8:1::1/64 +} + +h2_create() +{ + simple_if_init $h2 192.0.2.2/28 2001:db8:1::2/64 +} + +h2_destroy() +{ + simple_if_fini $h2 192.0.2.2/28 2001:db8:1::2/64 +} + +switch_create() +{ + ip link add name br1 up type bridge + ip link set dev $swp1 master br1 + ip link set dev $swp1 up + ip link set dev $swp2 master br1 + ip link set dev $swp2 up + + tc qdisc add dev $swp2 clsact +} + +switch_destroy() +{ + tc qdisc del dev $swp2 clsact + + ip link set dev $swp2 down + ip link set dev $swp2 nomaster + ip link set dev $swp1 down + ip link set dev $swp1 nomaster + ip link del dev br1 +} + +test_l2_miss_unicast() +{ + local dmac=00:01:02:03:04:05 + local dip=192.0.2.2 + local sip=192.0.2.1 + + RET=0 + + # Unknown unicast. + tc filter add dev $swp2 egress protocol ipv4 handle 101 pref 1 \ + flower indev $swp1 l2_miss true dst_mac $dmac src_ip $sip \ + dst_ip $dip action pass + # Known unicast. + tc filter add dev $swp2 egress protocol ipv4 handle 102 pref 1 \ + flower indev $swp1 l2_miss false dst_mac $dmac src_ip $sip \ + dst_ip $dip action pass + + # Before adding FDB entry. + $MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Unknown unicast filter was not hit before adding FDB entry" + + tc_check_packets "dev $swp2 egress" 102 0 + check_err $? "Known unicast filter was hit before adding FDB entry" + + # Adding FDB entry. + bridge fdb replace $dmac dev $swp2 master static + + $MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Unknown unicast filter was hit after adding FDB entry" + + tc_check_packets "dev $swp2 egress" 102 1 + check_err $? "Known unicast filter was not hit after adding FDB entry" + + # Deleting FDB entry. + bridge fdb del $dmac dev $swp2 master static + + $MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 2 + check_err $? "Unknown unicast filter was not hit after deleting FDB entry" + + tc_check_packets "dev $swp2 egress" 102 1 + check_err $? "Known unicast filter was hit after deleting FDB entry" + + tc filter del dev $swp2 egress protocol ipv4 pref 1 handle 102 flower + tc filter del dev $swp2 egress protocol ipv4 pref 1 handle 101 flower + + log_test "L2 miss - Unicast" +} + +test_l2_miss_multicast_common() +{ + local proto=$1; shift + local sip=$1; shift + local dip=$1; shift + local mode=$1; shift + local name=$1; shift + + RET=0 + + # Unregistered multicast. + tc filter add dev $swp2 egress protocol $proto handle 101 pref 1 \ + flower indev $swp1 l2_miss true src_ip $sip dst_ip $dip \ + action pass + # Registered multicast. + tc filter add dev $swp2 egress protocol $proto handle 102 pref 1 \ + flower indev $swp1 l2_miss false src_ip $sip dst_ip $dip \ + action pass + + # Before adding MDB entry. + $MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Unregistered multicast filter was not hit before adding MDB entry" + + tc_check_packets "dev $swp2 egress" 102 0 + check_err $? "Registered multicast filter was hit before adding MDB entry" + + # Adding MDB entry. + bridge mdb replace dev br1 port $swp2 grp $dip permanent + + $MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Unregistered multicast filter was hit after adding MDB entry" + + tc_check_packets "dev $swp2 egress" 102 1 + check_err $? "Registered multicast filter was not hit after adding MDB entry" + + # Deleting MDB entry. + bridge mdb del dev br1 port $swp2 grp $dip + + $MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 2 + check_err $? "Unregistered multicast filter was not hit after deleting MDB entry" + + tc_check_packets "dev $swp2 egress" 102 1 + check_err $? "Registered multicast filter was hit after deleting MDB entry" + + tc filter del dev $swp2 egress protocol $proto pref 1 handle 102 flower + tc filter del dev $swp2 egress protocol $proto pref 1 handle 101 flower + + log_test "L2 miss - Multicast ($name)" +} + +test_l2_miss_multicast_ipv4() +{ + local proto="ipv4" + local sip=192.0.2.1 + local dip=239.1.1.1 + local mode="-4" + local name="IPv4" + + test_l2_miss_multicast_common $proto $sip $dip $mode $name +} + +test_l2_miss_multicast_ipv6() +{ + local proto="ipv6" + local sip=2001:db8:1::1 + local dip=ff0e::1 + local mode="-6" + local name="IPv6" + + test_l2_miss_multicast_common $proto $sip $dip $mode $name +} + +test_l2_miss_multicast() +{ + # Configure $swp2 as a multicast router port so that it will forward + # both registered and unregistered multicast traffic. + bridge link set dev $swp2 mcast_router 2 + + # Forwarding according to MDB entries only takes place when the bridge + # detects that there is a valid querier in the network. Set the bridge + # as the querier and assign it a valid IPv6 link-local address to be + # used as the source address for MLD queries. + ip link set dev br1 type bridge mcast_querier 1 + ip -6 address add fe80::1/64 nodad dev br1 + # Wait the default Query Response Interval (10 seconds) for the bridge + # to determine that there are no other queriers in the network. + sleep 10 + + test_l2_miss_multicast_ipv4 + test_l2_miss_multicast_ipv6 + + ip -6 address del fe80::1/64 dev br1 + ip link set dev br1 type bridge mcast_querier 0 + bridge link set dev $swp2 mcast_router 1 +} + +test_l2_miss_multicast_common2() +{ + local name=$1; shift + local dmac=$1; shift + local dip=224.0.0.1 + local sip=192.0.2.1 + +} + +test_l2_miss_ll_multicast_common() +{ + local proto=$1; shift + local dmac=$1; shift + local sip=$1; shift + local dip=$1; shift + local mode=$1; shift + local name=$1; shift + + RET=0 + + tc filter add dev $swp2 egress protocol $proto handle 101 pref 1 \ + flower indev $swp1 l2_miss true dst_mac $dmac src_ip $sip \ + dst_ip $dip action pass + + $MZ $mode $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Filter was not hit" + + tc filter del dev $swp2 egress protocol $proto pref 1 handle 101 flower + + log_test "L2 miss - Link-local multicast ($name)" +} + +test_l2_miss_ll_multicast_ipv4() +{ + local proto=ipv4 + local dmac=01:00:5e:00:00:01 + local sip=192.0.2.1 + local dip=224.0.0.1 + local mode="-4" + local name="IPv4" + + test_l2_miss_ll_multicast_common $proto $dmac $sip $dip $mode $name +} + +test_l2_miss_ll_multicast_ipv6() +{ + local proto=ipv6 + local dmac=33:33:00:00:00:01 + local sip=2001:db8:1::1 + local dip=ff02::1 + local mode="-6" + local name="IPv6" + + test_l2_miss_ll_multicast_common $proto $dmac $sip $dip $mode $name +} + +test_l2_miss_ll_multicast() +{ + test_l2_miss_ll_multicast_ipv4 + test_l2_miss_ll_multicast_ipv6 +} + +test_l2_miss_broadcast() +{ + local dmac=ff:ff:ff:ff:ff:ff + local smac=00:01:02:03:04:05 + + RET=0 + + tc filter add dev $swp2 egress protocol all handle 101 pref 1 \ + flower indev $swp1 l2_miss true dst_mac $dmac src_mac $smac \ + action pass + + $MZ $h1 -a $smac -b $dmac -c 1 -p 100 -q + + tc_check_packets "dev $swp2 egress" 101 1 + check_err $? "Filter was not hit" + + tc filter del dev $swp2 egress protocol all pref 1 handle 101 flower + + log_test "L2 miss - Broadcast" +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + + swp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + vrf_prepare + h1_create + h2_create + switch_create +} + +cleanup() +{ + pre_cleanup + + switch_destroy + h2_destroy + h1_destroy + vrf_cleanup +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS