From: Amit Cohen <amcohen@nvidia.com>
To: <netdev@vger.kernel.org>
Cc: <davem@davemloft.net>, <kuba@kernel.org>, <mlxsw@nvidia.com>,
<idosch@nvidia.com>, Amit Cohen <amcohen@nvidia.com>,
Petr Machata <petrm@nvidia.com>
Subject: [PATCH net-next 7/8] selftests: mlxsw: Add test for VxLAN related traps for IPv6
Date: Thu, 23 Dec 2021 09:30:01 +0200 [thread overview]
Message-ID: <20211223073002.3733510-8-amcohen@nvidia.com> (raw)
In-Reply-To: <20211223073002.3733510-1-amcohen@nvidia.com>
The test configures VxLAN with IPv6 underlay and verifies that the
expected traps are triggered under the right conditions.
The test is similar to the existing IPv4 test.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
---
.../mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh | 342 ++++++++++++++++++
1 file changed, 342 insertions(+)
create mode 100755 tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh
diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh
new file mode 100755
index 000000000000..f6c16cbb6cf7
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh
@@ -0,0 +1,342 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test devlink-trap tunnel drops and exceptions functionality over mlxsw.
+# Check all traps to make sure they are triggered under the right
+# conditions.
+
+# +------------------------+
+# | H1 (vrf) |
+# | + $h1 |
+# | | 2001:db8:1::1/64 |
+# +----|-------------------+
+# |
+# +----|----------------------------------------------------------------------+
+# | SW | |
+# | +--|--------------------------------------------------------------------+ |
+# | | + $swp1 BR1 (802.1d) | |
+# | | | |
+# | | + vx1 (vxlan) | |
+# | | local 2001:db8:3::1 | |
+# | | id 1000 dstport $VXPORT | |
+# | +-----------------------------------------------------------------------+ |
+# | |
+# | + $rp1 |
+# | | 2001:db8:3::1/64 |
+# +----|----------------------------------------------------------------------+
+# |
+# +----|--------------------------------------------------------+
+# | | VRF2 |
+# | + $rp2 |
+# | 2001:db8:3::2/64 |
+# | |
+# +-------------------------------------------------------------+
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+ decap_error_test
+ overlay_smac_is_mc_test
+"
+
+NUM_NETIFS=4
+source $lib_dir/lib.sh
+source $lib_dir/tc_common.sh
+source $lib_dir/devlink_lib.sh
+
+: ${VXPORT:=4789}
+export VXPORT
+
+h1_create()
+{
+ simple_if_init $h1 2001:db8:1::1/64
+}
+
+h1_destroy()
+{
+ simple_if_fini $h1 2001:db8:1::1/64
+}
+
+switch_create()
+{
+ ip link add name br1 type bridge vlan_filtering 0 mcast_snooping 0
+ # Make sure the bridge uses the MAC address of the local port and not
+ # that of the VxLAN's device.
+ ip link set dev br1 address $(mac_get $swp1)
+ ip link set dev br1 up
+
+ tc qdisc add dev $swp1 clsact
+ ip link set dev $swp1 master br1
+ ip link set dev $swp1 up
+
+ ip link add name vx1 type vxlan id 1000 local 2001:db8:3::1 \
+ dstport "$VXPORT" nolearning udp6zerocsumrx udp6zerocsumtx \
+ tos inherit ttl 100
+ ip link set dev vx1 master br1
+ ip link set dev vx1 up
+
+ ip link set dev $rp1 up
+ ip address add dev $rp1 2001:db8:3::1/64
+}
+
+switch_destroy()
+{
+ ip address del dev $rp1 2001:db8:3::1/64
+ ip link set dev $rp1 down
+
+ ip link set dev vx1 down
+ ip link set dev vx1 nomaster
+ ip link del dev vx1
+
+ ip link set dev $swp1 down
+ ip link set dev $swp1 nomaster
+ tc qdisc del dev $swp1 clsact
+
+ ip link set dev br1 down
+ ip link del dev br1
+}
+
+vrf2_create()
+{
+ simple_if_init $rp2 2001:db8:3::2/64
+}
+
+vrf2_destroy()
+{
+ simple_if_fini $rp2 2001:db8:3::2/64
+}
+
+setup_prepare()
+{
+ h1=${NETIFS[p1]}
+ swp1=${NETIFS[p2]}
+
+ rp1=${NETIFS[p3]}
+ rp2=${NETIFS[p4]}
+
+ vrf_prepare
+ forwarding_enable
+ h1_create
+ switch_create
+ vrf2_create
+}
+
+cleanup()
+{
+ pre_cleanup
+
+ vrf2_destroy
+ switch_destroy
+ h1_destroy
+ forwarding_restore
+ vrf_cleanup
+}
+
+ecn_payload_get()
+{
+ local dest_mac=$(mac_get $h1)
+ local saddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:03"
+ local daddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:01"
+ p=$(:
+ )"08:"$( : VXLAN flags
+ )"00:00:00:"$( : VXLAN reserved
+ )"00:03:e8:"$( : VXLAN VNI : 1000
+ )"00:"$( : VXLAN reserved
+ )"$dest_mac:"$( : ETH daddr
+ )"00:00:00:00:00:00:"$( : ETH saddr
+ )"86:dd:"$( : ETH type
+ )"6"$( : IP version
+ )"0:0"$( : Traffic class
+ )"0:00:00:"$( : Flow label
+ )"00:08:"$( : Payload length
+ )"3a:"$( : Next header
+ )"04:"$( : Hop limit
+ )"$saddr:"$( : IP saddr
+ )"$daddr:"$( : IP daddr
+ )"80:"$( : ICMPv6.type
+ )"00:"$( : ICMPv6.code
+ )"00:"$( : ICMPv6.checksum
+ )
+ echo $p
+}
+
+ecn_decap_test()
+{
+ local trap_name="decap_error"
+ local desc=$1; shift
+ local ecn_desc=$1; shift
+ local outer_tos=$1; shift
+ local mz_pid
+
+ RET=0
+
+ tc filter add dev $swp1 egress protocol ipv6 pref 1 handle 101 \
+ flower src_ip 2001:db8:1::3 dst_ip 2001:db8:1::1 action pass
+
+ rp1_mac=$(mac_get $rp1)
+ payload=$(ecn_payload_get)
+
+ ip vrf exec v$rp2 $MZ -6 $rp2 -c 0 -d 1msec -b $rp1_mac \
+ -B 2001:db8:3::1 -t udp \
+ sp=12345,dp=$VXPORT,tos=$outer_tos,p=$payload -q &
+ mz_pid=$!
+
+ devlink_trap_exception_test $trap_name
+
+ tc_check_packets "dev $swp1 egress" 101 0
+ check_err $? "Packets were not dropped"
+
+ log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc"
+
+ kill $mz_pid && wait $mz_pid &> /dev/null
+ tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower
+}
+
+reserved_bits_payload_get()
+{
+ local dest_mac=$(mac_get $h1)
+ local saddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:03"
+ local daddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:01"
+ p=$(:
+ )"08:"$( : VXLAN flags
+ )"01:00:00:"$( : VXLAN reserved
+ )"00:03:e8:"$( : VXLAN VNI : 1000
+ )"00:"$( : VXLAN reserved
+ )"$dest_mac:"$( : ETH daddr
+ )"00:00:00:00:00:00:"$( : ETH saddr
+ )"86:dd:"$( : ETH type
+ )"6"$( : IP version
+ )"0:0"$( : Traffic class
+ )"0:00:00:"$( : Flow label
+ )"00:08:"$( : Payload length
+ )"3a:"$( : Next header
+ )"04:"$( : Hop limit
+ )"$saddr:"$( : IP saddr
+ )"$daddr:"$( : IP daddr
+ )"80:"$( : ICMPv6.type
+ )"00:"$( : ICMPv6.code
+ )"00:"$( : ICMPv6.checksum
+ )
+ echo $p
+}
+
+short_payload_get()
+{
+ dest_mac=$(mac_get $h1)
+ p=$(:
+ )"08:"$( : VXLAN flags
+ )"00:00:00:"$( : VXLAN reserved
+ )"00:03:e8:"$( : VXLAN VNI : 1000
+ )"00:"$( : VXLAN reserved
+ )"$dest_mac:"$( : ETH daddr
+ )"00:00:00:00:00:00:"$( : ETH saddr
+ )
+ echo $p
+}
+
+corrupted_packet_test()
+{
+ local trap_name="decap_error"
+ local desc=$1; shift
+ local payload_get=$1; shift
+ local mz_pid
+
+ RET=0
+
+ # In case of too short packet, there is no any inner packet,
+ # so the matching will always succeed
+ tc filter add dev $swp1 egress protocol ipv6 pref 1 handle 101 \
+ flower skip_hw src_ip 2001:db8:3::1 dst_ip 2001:db8:1::1 \
+ action pass
+
+ rp1_mac=$(mac_get $rp1)
+ payload=$($payload_get)
+ ip vrf exec v$rp2 $MZ -6 $rp2 -c 0 -d 1msec -b $rp1_mac \
+ -B 2001:db8:3::1 -t udp sp=12345,dp=$VXPORT,p=$payload -q &
+ mz_pid=$!
+
+ devlink_trap_exception_test $trap_name
+
+ tc_check_packets "dev $swp1 egress" 101 0
+ check_err $? "Packets were not dropped"
+
+ log_test "$desc"
+
+ kill $mz_pid && wait $mz_pid &> /dev/null
+ tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower
+}
+
+decap_error_test()
+{
+ ecn_decap_test "Decap error" "ECT(1)" 01
+ ecn_decap_test "Decap error" "ECT(0)" 02
+ ecn_decap_test "Decap error" "CE" 03
+
+ corrupted_packet_test "Decap error: Reserved bits in use" \
+ "reserved_bits_payload_get"
+ corrupted_packet_test "Decap error: Too short inner packet" \
+ "short_payload_get"
+}
+
+mc_smac_payload_get()
+{
+ local dest_mac=$(mac_get $h1)
+ local source_mac="01:02:03:04:05:06"
+ local saddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:03"
+ local daddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:01"
+ p=$(:
+ )"08:"$( : VXLAN flags
+ )"00:00:00:"$( : VXLAN reserved
+ )"00:03:e8:"$( : VXLAN VNI : 1000
+ )"00:"$( : VXLAN reserved
+ )"$dest_mac:"$( : ETH daddr
+ )"$source_mac:"$( : ETH saddr
+ )"86:dd:"$( : ETH type
+ )"6"$( : IP version
+ )"0:0"$( : Traffic class
+ )"0:00:00:"$( : Flow label
+ )"00:08:"$( : Payload length
+ )"3a:"$( : Next header
+ )"04:"$( : Hop limit
+ )"$saddr:"$( : IP saddr
+ )"$daddr:"$( : IP daddr
+ )"80:"$( : ICMPv6.type
+ )"00:"$( : ICMPv6.code
+ )"00:"$( : ICMPv6.checksum
+ )
+ echo $p
+}
+
+overlay_smac_is_mc_test()
+{
+ local trap_name="overlay_smac_is_mc"
+ local mz_pid
+
+ RET=0
+
+ # The matching will be checked on devlink_trap_drop_test()
+ # and the filter will be removed on devlink_trap_drop_cleanup()
+ tc filter add dev $swp1 egress protocol ipv6 pref 1 handle 101 \
+ flower src_mac 01:02:03:04:05:06 action pass
+
+ rp1_mac=$(mac_get $rp1)
+ payload=$(mc_smac_payload_get)
+
+ ip vrf exec v$rp2 $MZ -6 $rp2 -c 0 -d 1msec -b $rp1_mac \
+ -B 2001:db8:3::1 -t udp sp=12345,dp=$VXPORT,p=$payload -q &
+ mz_pid=$!
+
+ devlink_trap_drop_test $trap_name $swp1 101
+
+ log_test "Overlay source MAC is multicast"
+
+ devlink_trap_drop_cleanup $mz_pid $swp1 "ipv6" 1 101
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
--
2.31.1
next prev parent reply other threads:[~2021-12-23 7:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-23 7:29 [PATCH net-next 0/8] mlxsw: Add tests for VxLAN with IPv6 underlay Amit Cohen
2021-12-23 7:29 ` [PATCH net-next 1/8] selftests: mlxsw: vxlan: Make the test more flexible for future use Amit Cohen
2021-12-23 7:29 ` [PATCH net-next 2/8] selftests: mlxsw: Add VxLAN configuration test for IPv6 Amit Cohen
2021-12-23 7:29 ` [PATCH net-next 3/8] selftests: mlxsw: vxlan_fdb_veto: Make the test more flexible for future use Amit Cohen
2021-12-23 7:29 ` [PATCH net-next 4/8] selftests: mlxsw: Add VxLAN FDB veto test for IPv6 Amit Cohen
2021-12-23 7:29 ` [PATCH net-next 5/8] selftests: mlxsw: spectrum: Add a test for VxLAN flooding with IPv6 Amit Cohen
2021-12-23 7:30 ` [PATCH net-next 6/8] selftests: mlxsw: spectrum-2: " Amit Cohen
2021-12-23 7:30 ` Amit Cohen [this message]
2021-12-23 7:30 ` [PATCH net-next 8/8] selftests: mlxsw: devlink_trap_tunnel_vxlan: Fix 'decap_error' case Amit Cohen
2021-12-23 11:30 ` [PATCH net-next 0/8] mlxsw: Add tests for VxLAN with IPv6 underlay patchwork-bot+netdevbpf
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