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Message-Id: <20211030140718.16662-6-ap420073@gmail.com>
Date: Sat, 30 Oct 2021 14:07:18 +0000
From: Taehee Yoo <ap420073@...il.com>
To: davem@...emloft.net, kuba@...nel.org, dsahern@...nel.org,
netdev@...r.kernel.org
Cc: dkirjanov@...e.de, ap420073@...il.com
Subject: [PATCH net-next 5/5] selftests: add amt interface selftest script
This is selftest script for amt interface.
This script includes basic forwarding scenarion and torture scenario.
Signed-off-by: Taehee Yoo <ap420073@...il.com>
---
v5:
- Initial patch.
v5 -> v6:
- No change.
tools/testing/selftests/net/Makefile | 1 +
tools/testing/selftests/net/amt.sh | 284 +++++++++++++++++++++++++++
tools/testing/selftests/net/config | 1 +
3 files changed, 286 insertions(+)
create mode 100644 tools/testing/selftests/net/amt.sh
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 492b273743b4..d27c98a32244 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -22,6 +22,7 @@ TEST_PROGS += devlink_port_split.py
TEST_PROGS += drop_monitor_tests.sh
TEST_PROGS += vrf_route_leaking.sh
TEST_PROGS += bareudp.sh
+TEST_PROGS += amt.sh
TEST_PROGS += unicast_extensions.sh
TEST_PROGS += udpgro_fwd.sh
TEST_PROGS += veth.sh
diff --git a/tools/testing/selftests/net/amt.sh b/tools/testing/selftests/net/amt.sh
new file mode 100644
index 000000000000..75528788cb95
--- /dev/null
+++ b/tools/testing/selftests/net/amt.sh
@@ -0,0 +1,284 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Author: Taehee Yoo <ap420073@...il.com>
+#
+# This script evaluates the AMT driver.
+# There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY.
+# The role of LISTENER is to listen multicast traffic.
+# In order to do that, it send IGMP group join message.
+# The role of SOURCE is to send multicast traffic to listener.
+# The role of GATEWAY is to work Gateway role of AMT interface.
+# The role of RELAY is to work Relay role of AMT interface.
+#
+#
+# +------------------------+
+# | LISTENER netns |
+# | |
+# | +------------------+ |
+# | | l_gw | |
+# | | 192.168.0.2/24 | |
+# | | 2001:db8::2/64 | |
+# | +------------------+ |
+# | . |
+# +------------------------+
+# .
+# .
+# +-----------------------------------------------------+
+# | . GATEWAY netns |
+# | . |
+# |+---------------------------------------------------+|
+# || . br0 ||
+# || +------------------+ +------------------+ ||
+# || | gw_l | | amtg | ||
+# || | 192.168.0.1/24 | +--------+---------+ ||
+# || | 2001:db8::1/64 | | ||
+# || +------------------+ | ||
+# |+-------------------------------------|-------------+|
+# | | |
+# | +--------+---------+ |
+# | | gw_relay | |
+# | | 10.0.0.1/24 | |
+# | +------------------+ |
+# | . |
+# +-----------------------------------------------------+
+# .
+# .
+# +-----------------------------------------------------+
+# | RELAY netns . |
+# | +------------------+ |
+# | | relay_gw | |
+# | | 10.0.0.2/24 | |
+# | +--------+---------+ |
+# | | |
+# | | |
+# | +------------------+ +--------+---------+ |
+# | | relay_src | | amtr | |
+# | | 172.17.0.1/24 | +------------------+ |
+# | | 2001:db8:3::1/64 | |
+# | +------------------+ |
+# | . |
+# | . |
+# +-----------------------------------------------------+
+# .
+# .
+# +------------------------+
+# | . |
+# | +------------------+ |
+# | | src_relay | |
+# | | 172.17.0.2/24 | |
+# | | 2001:db8:3::2/64 | |
+# | +------------------+ |
+# | SOURCE netns |
+# +------------------------+
+#==============================================================================
+
+readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
+readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
+readonly RELAY=$(mktemp -u relay-XXXXXXXX)
+readonly SOURCE=$(mktemp -u source-XXXXXXXX)
+ERR=4
+err=0
+
+exit_cleanup()
+{
+ for ns in "$@"; do
+ ip netns delete "${ns}" 2>/dev/null || true
+ done
+
+ exit $ERR
+}
+
+create_namespaces()
+{
+ ip netns add "${LISTENER}" || exit_cleanup
+ ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}"
+ ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}"
+ ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \
+ "${RELAY}"
+}
+
+# The trap function handler
+#
+exit_cleanup_all()
+{
+ exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"
+}
+
+setup_interface()
+{
+ for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do
+ ip -netns "${ns}" link set dev lo up
+ done;
+
+ ip link add l_gw type veth peer name gw_l
+ ip link add gw_relay type veth peer name relay_gw
+ ip link add relay_src type veth peer name src_relay
+
+ ip link set l_gw netns "${LISTENER}" up
+ ip link set gw_l netns "${GATEWAY}" up
+ ip link set gw_relay netns "${GATEWAY}" up
+ ip link set relay_gw netns "${RELAY}" up
+ ip link set relay_src netns "${RELAY}" up
+ ip link set src_relay netns "${SOURCE}" up mtu 1400
+
+ ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw
+ ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw
+ ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw
+ ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw
+ ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin
+ ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin
+
+ ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l
+ ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l
+ ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay
+ ip netns exec "${GATEWAY}" ip link add br0 type bridge
+ ip netns exec "${GATEWAY}" ip link set br0 up
+ ip netns exec "${GATEWAY}" ip link set gw_l master br0
+ ip netns exec "${GATEWAY}" ip link set gw_l up
+ ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \
+ mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \
+ gateway_port 2268 relay_port 2268
+ ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw
+ ip netns exec "${RELAY}" ip link add amtr type amt mode relay \
+ local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4
+ ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src
+ ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src
+ ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay
+ ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay
+ ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay
+ ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay
+ ip netns exec "${RELAY}" ip link set amtr up
+ ip netns exec "${GATEWAY}" ip link set amtg up
+}
+
+setup_sysctl()
+{
+ ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q
+}
+
+setup_iptables()
+{
+ ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
+ -d 239.0.0.1 -j TTL --ttl-set 2
+ ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \
+ -j HL --hl-set 2
+}
+
+setup_mcast_routing()
+{
+ ip netns exec "${RELAY}" smcrouted
+ ip netns exec "${RELAY}" smcroutectl a relay_src \
+ 172.17.0.2 239.0.0.1 amtr
+ ip netns exec "${RELAY}" smcroutectl a relay_src \
+ 2001:db8:3::2 ff0e::5:6 amtr
+}
+
+test_remote_ip()
+{
+ REMOTE=$(ip netns exec "${GATEWAY}" \
+ ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote)
+ if [ $REMOTE == "\"10.0.0.2\"" ]; then
+ printf "TEST: %-60s [ OK ]\n" "amt discovery"
+ else
+ printf "TEST: %-60s [FAIL]\n" "amt discovery"
+ ERR=1
+ fi
+}
+
+send_mcast_torture4()
+{
+ ip netns exec "${SOURCE}" bash -c \
+ 'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001'
+}
+
+
+send_mcast_torture6()
+{
+ ip netns exec "${SOURCE}" bash -c \
+ 'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001'
+}
+
+check_features()
+{
+ ip link help 2>&1 | grep -q amt
+ if [ $? -ne 0 ]; then
+ echo "Missing amt support in iproute2" >&2
+ exit_cleanup
+ fi
+}
+
+test_ipv4_forward()
+{
+ RESULT4=$(ip netns exec "${LISTENER}" nc -w 1 -l -u 239.0.0.1 4000)
+ if [ "$RESULT4" == "172.17.0.2" ]; then
+ printf "TEST: %-60s [ OK ]\n" "IPv4 amt multicast forwarding"
+ exit 0
+ else
+ printf "TEST: %-60s [FAIL]\n" "IPv4 amt multicast forwarding"
+ exit 1
+ fi
+}
+
+test_ipv6_forward()
+{
+ RESULT6=$(ip netns exec "${LISTENER}" nc -w 1 -l -u ff0e::5:6 6000)
+ if [ "$RESULT6" == "2001:db8:3::2" ]; then
+ printf "TEST: %-60s [ OK ]\n" "IPv6 amt multicast forwarding"
+ exit 0
+ else
+ printf "TEST: %-60s [FAIL]\n" "IPv6 amt multicast forwarding"
+ exit 1
+ fi
+}
+
+send_mcast4()
+{
+ sleep 2
+ ip netns exec "${SOURCE}" bash -c \
+ 'echo 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
+}
+
+send_mcast6()
+{
+ sleep 2
+ ip netns exec "${SOURCE}" bash -c \
+ 'echo 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
+}
+
+check_features
+
+create_namespaces
+
+set -e
+trap exit_cleanup_all EXIT
+
+setup_interface
+setup_sysctl
+setup_iptables
+setup_mcast_routing
+test_remote_ip
+test_ipv4_forward &
+pid=$!
+send_mcast4
+wait $pid || err=$?
+if [ $err -eq 1 ]; then
+ ERR=1
+fi
+test_ipv6_forward &
+pid=$!
+send_mcast6
+wait $pid || err=$?
+if [ $err -eq 1 ]; then
+ ERR=1
+fi
+send_mcast_torture4
+printf "TEST: %-60s [ OK ]\n" "IPv4 amt traffic forwarding torture"
+send_mcast_torture6
+printf "TEST: %-60s [ OK ]\n" "IPv6 amt traffic forwarding torture"
+sleep 5
+if [ "${ERR}" -eq 1 ]; then
+ echo "Some tests failed." >&2
+else
+ ERR=0
+fi
diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 86ab429fe7f3..ead7963b9bf0 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -44,3 +44,4 @@ CONFIG_NET_ACT_MIRRED=m
CONFIG_BAREUDP=m
CONFIG_IPV6_IOAM6_LWTUNNEL=y
CONFIG_CRYPTO_SM4=y
+CONFIG_AMT=m
--
2.17.1
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