diff options
Diffstat (limited to 'tools/testing/selftests/net/srv6_hl2encap_red_l2vpn_test.sh')
-rwxr-xr-x | tools/testing/selftests/net/srv6_hl2encap_red_l2vpn_test.sh | 821 |
1 files changed, 821 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/srv6_hl2encap_red_l2vpn_test.sh b/tools/testing/selftests/net/srv6_hl2encap_red_l2vpn_test.sh new file mode 100755 index 0000000000..cb4177d41b --- /dev/null +++ b/tools/testing/selftests/net/srv6_hl2encap_red_l2vpn_test.sh @@ -0,0 +1,821 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# author: Andrea Mayer <andrea.mayer@uniroma2.it> +# +# This script is designed for testing the SRv6 H.L2Encaps.Red behavior. +# +# Below is depicted the IPv6 network of an operator which offers L2 VPN +# services to hosts, enabling them to communicate with each other. +# In this example, hosts hs-1 and hs-2 are connected through an L2 VPN service. +# Currently, the SRv6 subsystem in Linux allows hosts hs-1 and hs-2 to exchange +# full L2 frames as long as they carry IPv4/IPv6. +# +# Routers rt-1,rt-2,rt-3 and rt-4 implement L2 VPN services +# leveraging the SRv6 architecture. The key components for such VPNs are: +# +# i) The SRv6 H.L2Encaps.Red behavior applies SRv6 Policies on traffic +# received by connected hosts, initiating the VPN tunnel. Such a behavior +# is an optimization of the SRv6 H.L2Encap aiming to reduce the +# length of the SID List carried in the pushed SRH. Specifically, the +# H.L2Encaps.Red removes the first SID contained in the SID List (i.e. SRv6 +# Policy) by storing it into the IPv6 Destination Address. When a SRv6 +# Policy is made of only one SID, the SRv6 H.L2Encaps.Red behavior omits +# the SRH at all and pushes that SID directly into the IPv6 DA; +# +# ii) The SRv6 End behavior advances the active SID in the SID List +# carried by the SRH; +# +# iii) The SRv6 End.DX2 behavior is used for removing the SRv6 Policy +# and, thus, it terminates the VPN tunnel. The decapsulated L2 frame is +# sent over the interface connected with the destination host. +# +# cafe::1 cafe::2 +# 10.0.0.1 10.0.0.2 +# +--------+ +--------+ +# | | | | +# | hs-1 | | hs-2 | +# | | | | +# +---+----+ +--- +---+ +# cafe::/64 | | cafe::/64 +# 10.0.0.0/24 | | 10.0.0.0/24 +# +---+----+ +----+---+ +# | | fcf0:0:1:2::/64 | | +# | rt-1 +-------------------+ rt-2 | +# | | | | +# +---+----+ +----+---+ +# | . . | +# | fcf0:0:1:3::/64 . | +# | . . | +# | . . | +# fcf0:0:1:4::/64 | . | fcf0:0:2:3::/64 +# | . . | +# | . . | +# | fcf0:0:2:4::/64 . | +# | . . | +# +---+----+ +----+---+ +# | | | | +# | rt-4 +-------------------+ rt-3 | +# | | fcf0:0:3:4::/64 | | +# +---+----+ +----+---+ +# +# +# Every fcf0:0:x:y::/64 network interconnects the SRv6 routers rt-x with rt-y +# in the IPv6 operator network. +# +# Local SID table +# =============== +# +# Each SRv6 router is configured with a Local SID table in which SIDs are +# stored. Considering the given SRv6 router rt-x, at least two SIDs are +# configured in the Local SID table: +# +# Local SID table for SRv6 router rt-x +# +----------------------------------------------------------+ +# |fcff:x::e is associated with the SRv6 End behavior | +# |fcff:x::d2 is associated with the SRv6 End.DX2 behavior | +# +----------------------------------------------------------+ +# +# The fcff::/16 prefix is reserved by the operator for implementing SRv6 VPN +# services. Reachability of SIDs is ensured by proper configuration of the IPv6 +# operator's network and SRv6 routers. +# +# SRv6 Policies +# ============= +# +# An SRv6 ingress router applies SRv6 policies to the traffic received from a +# connected host. SRv6 policy enforcement consists of encapsulating the +# received traffic into a new IPv6 packet with a given SID List contained in +# the SRH. +# +# L2 VPN between hs-1 and hs-2 +# ---------------------------- +# +# Hosts hs-1 and hs-2 are connected using a dedicated L2 VPN. +# Specifically, packets generated from hs-1 and directed towards hs-2 are +# handled by rt-1 which applies the following SRv6 Policies: +# +# i.a) L2 traffic, SID List=fcff:2::d2 +# +# Policy (i.a) steers tunneled L2 traffic through SRv6 router rt-2. +# The H.L2Encaps.Red omits the presence of SRH at all, since the SID List +# consists of only one SID (fcff:2::d2) that can be stored directly in the IPv6 +# DA. +# +# On the reverse path (i.e. from hs-2 to hs-1), rt-2 applies the following +# policies: +# +# i.b) L2 traffic, SID List=fcff:4::e,fcff:3::e,fcff:1::d2 +# +# Policy (i.b) steers tunneled L2 traffic through the SRv6 routers +# rt-4,rt-3,rt2. The H.L2Encaps.Red reduces the SID List in the SRH by removing +# the first SID (fcff:4::e) and pushing it into the IPv6 DA. +# +# In summary: +# hs-1->hs-2 |IPv6 DA=fcff:2::d2|eth|...| (i.a) +# hs-2->hs-1 |IPv6 DA=fcff:4::e|SRH SIDs=fcff:3::e,fcff:1::d2|eth|...| (i.b) +# + +# Kselftest framework requirement - SKIP code is 4. +readonly ksft_skip=4 + +readonly RDMSUFF="$(mktemp -u XXXXXXXX)" +readonly DUMMY_DEVNAME="dum0" +readonly RT2HS_DEVNAME="veth-hs" +readonly HS_VETH_NAME="veth0" +readonly LOCALSID_TABLE_ID=90 +readonly IPv6_RT_NETWORK=fcf0:0 +readonly IPv6_HS_NETWORK=cafe +readonly IPv4_HS_NETWORK=10.0.0 +readonly VPN_LOCATOR_SERVICE=fcff +readonly MAC_PREFIX=00:00:00:c0:01 +readonly END_FUNC=000e +readonly DX2_FUNC=00d2 + +PING_TIMEOUT_SEC=4 +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} + +# IDs of routers and hosts are initialized during the setup of the testing +# network +ROUTERS='' +HOSTS='' + +SETUP_ERR=1 + +ret=${ksft_skip} +nsuccess=0 +nfail=0 + +log_test() +{ + local rc="$1" + local expected="$2" + local msg="$3" + + if [ "${rc}" -eq "${expected}" ]; then + nsuccess=$((nsuccess+1)) + printf "\n TEST: %-60s [ OK ]\n" "${msg}" + else + ret=1 + nfail=$((nfail+1)) + printf "\n TEST: %-60s [FAIL]\n" "${msg}" + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo + echo "hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + fi +} + +print_log_test_results() +{ + printf "\nTests passed: %3d\n" "${nsuccess}" + printf "Tests failed: %3d\n" "${nfail}" + + # when a test fails, the value of 'ret' is set to 1 (error code). + # Conversely, when all tests are passed successfully, the 'ret' value + # is set to 0 (success code). + if [ "${ret}" -ne 1 ]; then + ret=0 + fi +} + +log_section() +{ + echo + echo "################################################################################" + echo "TEST SECTION: $*" + echo "################################################################################" +} + +test_command_or_ksft_skip() +{ + local cmd="$1" + + if [ ! -x "$(command -v "${cmd}")" ]; then + echo "SKIP: Could not run test without \"${cmd}\" tool"; + exit "${ksft_skip}" + fi +} + +get_nodename() +{ + local name="$1" + + echo "${name}-${RDMSUFF}" +} + +get_rtname() +{ + local rtid="$1" + + get_nodename "rt-${rtid}" +} + +get_hsname() +{ + local hsid="$1" + + get_nodename "hs-${hsid}" +} + +__create_namespace() +{ + local name="$1" + + ip netns add "${name}" +} + +create_router() +{ + local rtid="$1" + local nsname + + nsname="$(get_rtname "${rtid}")" + + __create_namespace "${nsname}" +} + +create_host() +{ + local hsid="$1" + local nsname + + nsname="$(get_hsname "${hsid}")" + + __create_namespace "${nsname}" +} + +cleanup() +{ + local nsname + local i + + # destroy routers + for i in ${ROUTERS}; do + nsname="$(get_rtname "${i}")" + + ip netns del "${nsname}" &>/dev/null || true + done + + # destroy hosts + for i in ${HOSTS}; do + nsname="$(get_hsname "${i}")" + + ip netns del "${nsname}" &>/dev/null || true + done + + # check whether the setup phase was completed successfully or not. In + # case of an error during the setup phase of the testing environment, + # the selftest is considered as "skipped". + if [ "${SETUP_ERR}" -ne 0 ]; then + echo "SKIP: Setting up the testing environment failed" + exit "${ksft_skip}" + fi + + exit "${ret}" +} + +add_link_rt_pairs() +{ + local rt="$1" + local rt_neighs="$2" + local neigh + local nsname + local neigh_nsname + + nsname="$(get_rtname "${rt}")" + + for neigh in ${rt_neighs}; do + neigh_nsname="$(get_rtname "${neigh}")" + + ip link add "veth-rt-${rt}-${neigh}" netns "${nsname}" \ + type veth peer name "veth-rt-${neigh}-${rt}" \ + netns "${neigh_nsname}" + done +} + +get_network_prefix() +{ + local rt="$1" + local neigh="$2" + local p="${rt}" + local q="${neigh}" + + if [ "${p}" -gt "${q}" ]; then + p="${q}"; q="${rt}" + fi + + echo "${IPv6_RT_NETWORK}:${p}:${q}" +} + +# Setup the basic networking for the routers +setup_rt_networking() +{ + local rt="$1" + local rt_neighs="$2" + local nsname + local net_prefix + local devname + local neigh + + nsname="$(get_rtname "${rt}")" + + for neigh in ${rt_neighs}; do + devname="veth-rt-${rt}-${neigh}" + + net_prefix="$(get_network_prefix "${rt}" "${neigh}")" + + ip -netns "${nsname}" addr \ + add "${net_prefix}::${rt}/64" dev "${devname}" nodad + + ip -netns "${nsname}" link set "${devname}" up + done + + ip -netns "${nsname}" link add "${DUMMY_DEVNAME}" type dummy + + ip -netns "${nsname}" link set "${DUMMY_DEVNAME}" up + ip -netns "${nsname}" link set lo up + + ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.all.accept_dad=0 + ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.default.accept_dad=0 + ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.all.forwarding=1 + + ip netns exec "${nsname}" sysctl -wq net.ipv4.conf.all.rp_filter=0 + ip netns exec "${nsname}" sysctl -wq net.ipv4.conf.default.rp_filter=0 + ip netns exec "${nsname}" sysctl -wq net.ipv4.ip_forward=1 +} + +# Setup local SIDs for an SRv6 router +setup_rt_local_sids() +{ + local rt="$1" + local rt_neighs="$2" + local net_prefix + local devname + local nsname + local neigh + + nsname="$(get_rtname "${rt}")" + + for neigh in ${rt_neighs}; do + devname="veth-rt-${rt}-${neigh}" + + net_prefix="$(get_network_prefix "${rt}" "${neigh}")" + + # set underlay network routes for SIDs reachability + ip -netns "${nsname}" -6 route \ + add "${VPN_LOCATOR_SERVICE}:${neigh}::/32" \ + table "${LOCALSID_TABLE_ID}" \ + via "${net_prefix}::${neigh}" dev "${devname}" + done + + # Local End behavior (note that dev "${DUMMY_DEVNAME}" is a dummy + # interface) + ip -netns "${nsname}" -6 route \ + add "${VPN_LOCATOR_SERVICE}:${rt}::${END_FUNC}" \ + table "${LOCALSID_TABLE_ID}" \ + encap seg6local action End dev "${DUMMY_DEVNAME}" + + # all SIDs for VPNs start with a common locator. Routes and SRv6 + # Endpoint behaviors instaces are grouped together in the 'localsid' + # table. + ip -netns "${nsname}" -6 rule add \ + to "${VPN_LOCATOR_SERVICE}::/16" \ + lookup "${LOCALSID_TABLE_ID}" prio 999 +} + +# build and install the SRv6 policy into the ingress SRv6 router. +# args: +# $1 - destination host (i.e. cafe::x host) +# $2 - SRv6 router configured for enforcing the SRv6 Policy +# $3 - SRv6 routers configured for steering traffic (End behaviors) +# $4 - SRv6 router configured for removing the SRv6 Policy (router connected +# to the destination host) +# $5 - encap mode (full or red) +# $6 - traffic type (IPv6 or IPv4) +__setup_rt_policy() +{ + local dst="$1" + local encap_rt="$2" + local end_rts="$3" + local dec_rt="$4" + local mode="$5" + local traffic="$6" + local nsname + local policy='' + local n + + nsname="$(get_rtname "${encap_rt}")" + + for n in ${end_rts}; do + policy="${policy}${VPN_LOCATOR_SERVICE}:${n}::${END_FUNC}," + done + + policy="${policy}${VPN_LOCATOR_SERVICE}:${dec_rt}::${DX2_FUNC}" + + # add SRv6 policy to incoming traffic sent by connected hosts + if [ "${traffic}" -eq 6 ]; then + ip -netns "${nsname}" -6 route \ + add "${IPv6_HS_NETWORK}::${dst}" \ + encap seg6 mode "${mode}" segs "${policy}" \ + dev dum0 + else + ip -netns "${nsname}" -4 route \ + add "${IPv4_HS_NETWORK}.${dst}" \ + encap seg6 mode "${mode}" segs "${policy}" \ + dev dum0 + fi +} + +# see __setup_rt_policy +setup_rt_policy_ipv6() +{ + __setup_rt_policy "$1" "$2" "$3" "$4" "$5" 6 +} + +#see __setup_rt_policy +setup_rt_policy_ipv4() +{ + __setup_rt_policy "$1" "$2" "$3" "$4" "$5" 4 +} + +setup_decap() +{ + local rt="$1" + local nsname + + nsname="$(get_rtname "${rt}")" + + # Local End.DX2 behavior + ip -netns "${nsname}" -6 route \ + add "${VPN_LOCATOR_SERVICE}:${rt}::${DX2_FUNC}" \ + table "${LOCALSID_TABLE_ID}" \ + encap seg6local action End.DX2 oif "${RT2HS_DEVNAME}" \ + dev "${RT2HS_DEVNAME}" +} + +setup_hs() +{ + local hs="$1" + local rt="$2" + local hsname + local rtname + + hsname="$(get_hsname "${hs}")" + rtname="$(get_rtname "${rt}")" + + ip netns exec "${hsname}" sysctl -wq net.ipv6.conf.all.accept_dad=0 + ip netns exec "${hsname}" sysctl -wq net.ipv6.conf.default.accept_dad=0 + + ip -netns "${hsname}" link add "${HS_VETH_NAME}" type veth \ + peer name "${RT2HS_DEVNAME}" netns "${rtname}" + + ip -netns "${hsname}" addr add "${IPv6_HS_NETWORK}::${hs}/64" \ + dev "${HS_VETH_NAME}" nodad + ip -netns "${hsname}" addr add "${IPv4_HS_NETWORK}.${hs}/24" \ + dev "${HS_VETH_NAME}" + + ip -netns "${hsname}" link set "${HS_VETH_NAME}" up + ip -netns "${hsname}" link set lo up + + ip -netns "${rtname}" addr add "${IPv6_HS_NETWORK}::254/64" \ + dev "${RT2HS_DEVNAME}" nodad + ip -netns "${rtname}" addr \ + add "${IPv4_HS_NETWORK}.254/24" dev "${RT2HS_DEVNAME}" + + ip -netns "${rtname}" link set "${RT2HS_DEVNAME}" up + + # disable the rp_filter otherwise the kernel gets confused about how + # to route decap ipv4 packets. + ip netns exec "${rtname}" \ + sysctl -wq net.ipv4.conf."${RT2HS_DEVNAME}".rp_filter=0 +} + +# set an auto-generated mac address +# args: +# $1 - name of the node (e.g.: hs-1, rt-3, etc) +# $2 - id of the node (e.g.: 1 for hs-1, 3 for rt-3, etc) +# $3 - host part of the IPv6 network address +# $4 - name of the network interface to which the generated mac address must +# be set. +set_mac_address() +{ + local nodename="$1" + local nodeid="$2" + local host="$3" + local ifname="$4" + local nsname + + nsname=$(get_nodename "${nodename}") + + ip -netns "${nsname}" link set dev "${ifname}" down + + ip -netns "${nsname}" link set address "${MAC_PREFIX}:${nodeid}" \ + dev "${ifname}" + + # the IPv6 address must be set once again after the MAC address has + # been changed. + ip -netns "${nsname}" addr add "${IPv6_HS_NETWORK}::${host}/64" \ + dev "${ifname}" nodad + + ip -netns "${nsname}" link set dev "${ifname}" up +} + +set_host_l2peer() +{ + local hssrc="$1" + local hsdst="$2" + local ipprefix="$3" + local proto="$4" + local hssrc_name + local ipaddr + + hssrc_name="$(get_hsname "${hssrc}")" + + if [ "${proto}" -eq 6 ]; then + ipaddr="${ipprefix}::${hsdst}" + else + ipaddr="${ipprefix}.${hsdst}" + fi + + ip -netns "${hssrc_name}" route add "${ipaddr}" dev "${HS_VETH_NAME}" + + ip -netns "${hssrc_name}" neigh \ + add "${ipaddr}" lladdr "${MAC_PREFIX}:${hsdst}" \ + dev "${HS_VETH_NAME}" +} + +# setup an SRv6 L2 VPN between host hs-x and hs-y (currently, the SRv6 +# subsystem only supports L2 frames whose layer-3 is IPv4/IPv6). +# args: +# $1 - source host +# $2 - SRv6 routers configured for steering tunneled traffic +# $3 - destination host +setup_l2vpn() +{ + local hssrc="$1" + local end_rts="$2" + local hsdst="$3" + local rtsrc="${hssrc}" + local rtdst="${hsdst}" + + # set fixed mac for source node and the neigh MAC address + set_mac_address "hs-${hssrc}" "${hssrc}" "${hssrc}" "${HS_VETH_NAME}" + set_host_l2peer "${hssrc}" "${hsdst}" "${IPv6_HS_NETWORK}" 6 + set_host_l2peer "${hssrc}" "${hsdst}" "${IPv4_HS_NETWORK}" 4 + + # we have to set the mac address of the veth-host (on ingress router) + # to the mac address of the remote peer (L2 VPN destination host). + # Otherwise, traffic coming from the source host is dropped at the + # ingress router. + set_mac_address "rt-${rtsrc}" "${hsdst}" 254 "${RT2HS_DEVNAME}" + + # set the SRv6 Policies at the ingress router + setup_rt_policy_ipv6 "${hsdst}" "${rtsrc}" "${end_rts}" "${rtdst}" \ + l2encap.red 6 + setup_rt_policy_ipv4 "${hsdst}" "${rtsrc}" "${end_rts}" "${rtdst}" \ + l2encap.red 4 + + # set the decap behavior + setup_decap "${rtsrc}" +} + +setup() +{ + local i + + # create routers + ROUTERS="1 2 3 4"; readonly ROUTERS + for i in ${ROUTERS}; do + create_router "${i}" + done + + # create hosts + HOSTS="1 2"; readonly HOSTS + for i in ${HOSTS}; do + create_host "${i}" + done + + # set up the links for connecting routers + add_link_rt_pairs 1 "2 3 4" + add_link_rt_pairs 2 "3 4" + add_link_rt_pairs 3 "4" + + # set up the basic connectivity of routers and routes required for + # reachability of SIDs. + setup_rt_networking 1 "2 3 4" + setup_rt_networking 2 "1 3 4" + setup_rt_networking 3 "1 2 4" + setup_rt_networking 4 "1 2 3" + + # set up the hosts connected to routers + setup_hs 1 1 + setup_hs 2 2 + + # set up default SRv6 Endpoints (i.e. SRv6 End and SRv6 End.DX2) + setup_rt_local_sids 1 "2 3 4" + setup_rt_local_sids 2 "1 3 4" + setup_rt_local_sids 3 "1 2 4" + setup_rt_local_sids 4 "1 2 3" + + # create a L2 VPN between hs-1 and hs-2. + # NB: currently, H.L2Encap* enables tunneling of L2 frames whose + # layer-3 is IPv4/IPv6. + # + # the network path between hs-1 and hs-2 traverses several routers + # depending on the direction of traffic. + # + # Direction hs-1 -> hs-2 (H.L2Encaps.Red) + # - rt-2 (SRv6 End.DX2 behavior) + # + # Direction hs-2 -> hs-1 (H.L2Encaps.Red) + # - rt-4,rt-3 (SRv6 End behaviors) + # - rt-1 (SRv6 End.DX2 behavior) + setup_l2vpn 1 "" 2 + setup_l2vpn 2 "4 3" 1 + + # testing environment was set up successfully + SETUP_ERR=0 +} + +check_rt_connectivity() +{ + local rtsrc="$1" + local rtdst="$2" + local prefix + local rtsrc_nsname + + rtsrc_nsname="$(get_rtname "${rtsrc}")" + + prefix="$(get_network_prefix "${rtsrc}" "${rtdst}")" + + ip netns exec "${rtsrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \ + "${prefix}::${rtdst}" >/dev/null 2>&1 +} + +check_and_log_rt_connectivity() +{ + local rtsrc="$1" + local rtdst="$2" + + check_rt_connectivity "${rtsrc}" "${rtdst}" + log_test $? 0 "Routers connectivity: rt-${rtsrc} -> rt-${rtdst}" +} + +check_hs_ipv6_connectivity() +{ + local hssrc="$1" + local hsdst="$2" + local hssrc_nsname + + hssrc_nsname="$(get_hsname "${hssrc}")" + + ip netns exec "${hssrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \ + "${IPv6_HS_NETWORK}::${hsdst}" >/dev/null 2>&1 +} + +check_hs_ipv4_connectivity() +{ + local hssrc="$1" + local hsdst="$2" + local hssrc_nsname + + hssrc_nsname="$(get_hsname "${hssrc}")" + + ip netns exec "${hssrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \ + "${IPv4_HS_NETWORK}.${hsdst}" >/dev/null 2>&1 +} + +check_and_log_hs2gw_connectivity() +{ + local hssrc="$1" + + check_hs_ipv6_connectivity "${hssrc}" 254 + log_test $? 0 "IPv6 Hosts connectivity: hs-${hssrc} -> gw" + + check_hs_ipv4_connectivity "${hssrc}" 254 + log_test $? 0 "IPv4 Hosts connectivity: hs-${hssrc} -> gw" +} + +check_and_log_hs_ipv6_connectivity() +{ + local hssrc="$1" + local hsdst="$2" + + check_hs_ipv6_connectivity "${hssrc}" "${hsdst}" + log_test $? 0 "IPv6 Hosts connectivity: hs-${hssrc} -> hs-${hsdst}" +} + +check_and_log_hs_ipv4_connectivity() +{ + local hssrc="$1" + local hsdst="$2" + + check_hs_ipv4_connectivity "${hssrc}" "${hsdst}" + log_test $? 0 "IPv4 Hosts connectivity: hs-${hssrc} -> hs-${hsdst}" +} + +check_and_log_hs_connectivity() +{ + local hssrc="$1" + local hsdst="$2" + + check_and_log_hs_ipv4_connectivity "${hssrc}" "${hsdst}" + check_and_log_hs_ipv6_connectivity "${hssrc}" "${hsdst}" +} + +router_tests() +{ + local i + local j + + log_section "IPv6 routers connectivity test" + + for i in ${ROUTERS}; do + for j in ${ROUTERS}; do + if [ "${i}" -eq "${j}" ]; then + continue + fi + + check_and_log_rt_connectivity "${i}" "${j}" + done + done +} + +host2gateway_tests() +{ + local hs + + log_section "IPv4/IPv6 connectivity test among hosts and gateways" + + for hs in ${HOSTS}; do + check_and_log_hs2gw_connectivity "${hs}" + done +} + +host_vpn_tests() +{ + log_section "SRv6 L2 VPN connectivity test hosts (h1 <-> h2)" + + check_and_log_hs_connectivity 1 2 + check_and_log_hs_connectivity 2 1 +} + +test_dummy_dev_or_ksft_skip() +{ + local test_netns + + test_netns="dummy-$(mktemp -u XXXXXXXX)" + + if ! ip netns add "${test_netns}"; then + echo "SKIP: Cannot set up netns for testing dummy dev support" + exit "${ksft_skip}" + fi + + modprobe dummy &>/dev/null || true + if ! ip -netns "${test_netns}" link \ + add "${DUMMY_DEVNAME}" type dummy; then + echo "SKIP: dummy dev not supported" + + ip netns del "${test_netns}" + exit "${ksft_skip}" + fi + + ip netns del "${test_netns}" +} + +test_iproute2_supp_or_ksft_skip() +{ + if ! ip route help 2>&1 | grep -qo "l2encap.red"; then + echo "SKIP: Missing SRv6 l2encap.red support in iproute2" + exit "${ksft_skip}" + fi +} + +if [ "$(id -u)" -ne 0 ]; then + echo "SKIP: Need root privileges" + exit "${ksft_skip}" +fi + +# required programs to carry out this selftest +test_command_or_ksft_skip ip +test_command_or_ksft_skip ping +test_command_or_ksft_skip sysctl +test_command_or_ksft_skip grep + +test_iproute2_supp_or_ksft_skip +test_dummy_dev_or_ksft_skip + +set -e +trap cleanup EXIT + +setup +set +e + +router_tests +host2gateway_tests +host_vpn_tests + +print_log_test_results |