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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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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‎tools/testing/selftests/net/Makefile

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@@ -22,6 +22,7 @@ TEST_PROGS += devlink_port_split.py
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TEST_PROGS += drop_monitor_tests.sh
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TEST_PROGS += vrf_route_leaking.sh
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TEST_PROGS += bareudp.sh
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TEST_PROGS += amt.sh
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TEST_PROGS += unicast_extensions.sh
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TEST_PROGS += udpgro_fwd.sh
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TEST_PROGS += veth.sh

‎tools/testing/selftests/net/amt.sh

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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# Author: Taehee Yoo <[email protected]>
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#
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# This script evaluates the AMT driver.
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# There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY.
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# The role of LISTENER is to listen multicast traffic.
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# In order to do that, it send IGMP group join message.
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# The role of SOURCE is to send multicast traffic to listener.
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# The role of GATEWAY is to work Gateway role of AMT interface.
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# The role of RELAY is to work Relay role of AMT interface.
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#
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#
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# +------------------------+
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# | LISTENER netns |
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# | |
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# | +------------------+ |
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# | | l_gw | |
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# | | 192.168.0.2/24 | |
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# | | 2001:db8::2/64 | |
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# | +------------------+ |
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# | . |
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# +------------------------+
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# .
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# .
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# +-----------------------------------------------------+
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# | . GATEWAY netns |
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# | . |
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# |+---------------------------------------------------+|
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# || . br0 ||
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# || +------------------+ +------------------+ ||
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# || | gw_l | | amtg | ||
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# || | 192.168.0.1/24 | +--------+---------+ ||
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# || | 2001:db8::1/64 | | ||
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# || +------------------+ | ||
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# |+-------------------------------------|-------------+|
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# | | |
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# | +--------+---------+ |
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# | | gw_relay | |
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# | | 10.0.0.1/24 | |
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# | +------------------+ |
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# | . |
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# +-----------------------------------------------------+
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# .
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# .
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# +-----------------------------------------------------+
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# | RELAY netns . |
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# | +------------------+ |
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# | | relay_gw | |
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# | | 10.0.0.2/24 | |
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# | +--------+---------+ |
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# | | |
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# | | |
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# | +------------------+ +--------+---------+ |
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# | | relay_src | | amtr | |
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# | | 172.17.0.1/24 | +------------------+ |
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# | | 2001:db8:3::1/64 | |
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# | +------------------+ |
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# | . |
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# | . |
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# +-----------------------------------------------------+
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# .
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# .
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# +------------------------+
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# | . |
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# | +------------------+ |
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# | | src_relay | |
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# | | 172.17.0.2/24 | |
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# | | 2001:db8:3::2/64 | |
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# | +------------------+ |
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# | SOURCE netns |
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# +------------------------+
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#==============================================================================
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readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
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readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
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readonly RELAY=$(mktemp -u relay-XXXXXXXX)
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readonly SOURCE=$(mktemp -u source-XXXXXXXX)
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ERR=4
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err=0
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exit_cleanup()
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{
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for ns in "$@"; do
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ip netns delete "${ns}" 2>/dev/null || true
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done
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exit $ERR
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}
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create_namespaces()
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{
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ip netns add "${LISTENER}" || exit_cleanup
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ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}"
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ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}"
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ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \
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"${RELAY}"
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}
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# The trap function handler
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#
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exit_cleanup_all()
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{
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exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"
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}
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setup_interface()
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{
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for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do
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ip -netns "${ns}" link set dev lo up
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done;
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ip link add l_gw type veth peer name gw_l
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ip link add gw_relay type veth peer name relay_gw
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ip link add relay_src type veth peer name src_relay
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ip link set l_gw netns "${LISTENER}" up
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ip link set gw_l netns "${GATEWAY}" up
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ip link set gw_relay netns "${GATEWAY}" up
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ip link set relay_gw netns "${RELAY}" up
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ip link set relay_src netns "${RELAY}" up
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ip link set src_relay netns "${SOURCE}" up mtu 1400
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ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw
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ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw
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ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw
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ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw
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ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin
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ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin
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ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l
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ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l
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ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay
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ip netns exec "${GATEWAY}" ip link add br0 type bridge
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ip netns exec "${GATEWAY}" ip link set br0 up
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ip netns exec "${GATEWAY}" ip link set gw_l master br0
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ip netns exec "${GATEWAY}" ip link set gw_l up
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ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \
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mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \
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gateway_port 2268 relay_port 2268
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ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw
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ip netns exec "${RELAY}" ip link add amtr type amt mode relay \
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local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4
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ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src
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ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src
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ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay
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ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay
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ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay
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ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay
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ip netns exec "${RELAY}" ip link set amtr up
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ip netns exec "${GATEWAY}" ip link set amtg up
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}
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setup_sysctl()
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{
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ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q
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}
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setup_iptables()
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{
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ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
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-d 239.0.0.1 -j TTL --ttl-set 2
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ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \
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-j HL --hl-set 2
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}
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setup_mcast_routing()
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{
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ip netns exec "${RELAY}" smcrouted
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ip netns exec "${RELAY}" smcroutectl a relay_src \
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172.17.0.2 239.0.0.1 amtr
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ip netns exec "${RELAY}" smcroutectl a relay_src \
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2001:db8:3::2 ff0e::5:6 amtr
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}
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test_remote_ip()
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{
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REMOTE=$(ip netns exec "${GATEWAY}" \
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ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote)
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if [ $REMOTE == "\"10.0.0.2\"" ]; then
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printf "TEST: %-60s [ OK ]\n" "amt discovery"
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else
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printf "TEST: %-60s [FAIL]\n" "amt discovery"
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ERR=1
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fi
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}
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send_mcast_torture4()
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{
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ip netns exec "${SOURCE}" bash -c \
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'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001'
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}
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send_mcast_torture6()
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{
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ip netns exec "${SOURCE}" bash -c \
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'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001'
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}
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check_features()
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{
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ip link help 2>&1 | grep -q amt
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if [ $? -ne 0 ]; then
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echo "Missing amt support in iproute2" >&2
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exit_cleanup
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fi
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}
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test_ipv4_forward()
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{
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RESULT4=$(ip netns exec "${LISTENER}" nc -w 1 -l -u 239.0.0.1 4000)
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if [ "$RESULT4" == "172.17.0.2" ]; then
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printf "TEST: %-60s [ OK ]\n" "IPv4 amt multicast forwarding"
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exit 0
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else
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printf "TEST: %-60s [FAIL]\n" "IPv4 amt multicast forwarding"
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exit 1
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fi
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}
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test_ipv6_forward()
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{
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RESULT6=$(ip netns exec "${LISTENER}" nc -w 1 -l -u ff0e::5:6 6000)
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if [ "$RESULT6" == "2001:db8:3::2" ]; then
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printf "TEST: %-60s [ OK ]\n" "IPv6 amt multicast forwarding"
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exit 0
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else
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printf "TEST: %-60s [FAIL]\n" "IPv6 amt multicast forwarding"
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exit 1
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fi
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}
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send_mcast4()
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{
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sleep 2
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ip netns exec "${SOURCE}" bash -c \
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'echo 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
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}
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send_mcast6()
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{
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sleep 2
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ip netns exec "${SOURCE}" bash -c \
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'echo 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
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}
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check_features
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create_namespaces
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set -e
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trap exit_cleanup_all EXIT
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setup_interface
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setup_sysctl
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setup_iptables
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setup_mcast_routing
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test_remote_ip
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test_ipv4_forward &
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pid=$!
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send_mcast4
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wait $pid || err=$?
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if [ $err -eq 1 ]; then
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ERR=1
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fi
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test_ipv6_forward &
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pid=$!
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send_mcast6
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wait $pid || err=$?
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if [ $err -eq 1 ]; then
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ERR=1
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fi
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send_mcast_torture4
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printf "TEST: %-60s [ OK ]\n" "IPv4 amt traffic forwarding torture"
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send_mcast_torture6
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printf "TEST: %-60s [ OK ]\n" "IPv6 amt traffic forwarding torture"
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sleep 5
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if [ "${ERR}" -eq 1 ]; then
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echo "Some tests failed." >&2
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else
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ERR=0
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fi

‎tools/testing/selftests/net/config

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@@ -44,3 +44,4 @@ CONFIG_NET_ACT_MIRRED=m
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CONFIG_BAREUDP=m
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CONFIG_IPV6_IOAM6_LWTUNNEL=y
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CONFIG_CRYPTO_SM4=y
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CONFIG_AMT=m

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