4.16-stable review patch. If anyone has any objections, please let me know.
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From: David Ahern dsahern@gmail.com
[ Upstream commit 153e1b84f477f716bc3f81e6cfae1a3d941fc7ec ]
Add test cases verifying FIB onlink commands work as expected in various conditions - IPv4, IPv6, main table, and VRF.
Signed-off-by: David Ahern dsahern@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/net/fib-onlink-tests.sh | 375 ++++++++++++++++++++++++ 1 file changed, 375 insertions(+) create mode 100644 tools/testing/selftests/net/fib-onlink-tests.sh
--- /dev/null +++ b/tools/testing/selftests/net/fib-onlink-tests.sh @@ -0,0 +1,375 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# IPv4 and IPv6 onlink tests + +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} + +# Network interfaces +# - odd in current namespace; even in peer ns +declare -A NETIFS +# default VRF +NETIFS[p1]=veth1 +NETIFS[p2]=veth2 +NETIFS[p3]=veth3 +NETIFS[p4]=veth4 +# VRF +NETIFS[p5]=veth5 +NETIFS[p6]=veth6 +NETIFS[p7]=veth7 +NETIFS[p8]=veth8 + +# /24 network +declare -A V4ADDRS +V4ADDRS[p1]=169.254.1.1 +V4ADDRS[p2]=169.254.1.2 +V4ADDRS[p3]=169.254.3.1 +V4ADDRS[p4]=169.254.3.2 +V4ADDRS[p5]=169.254.5.1 +V4ADDRS[p6]=169.254.5.2 +V4ADDRS[p7]=169.254.7.1 +V4ADDRS[p8]=169.254.7.2 + +# /64 network +declare -A V6ADDRS +V6ADDRS[p1]=2001:db8:101::1 +V6ADDRS[p2]=2001:db8:101::2 +V6ADDRS[p3]=2001:db8:301::1 +V6ADDRS[p4]=2001:db8:301::2 +V6ADDRS[p5]=2001:db8:501::1 +V6ADDRS[p6]=2001:db8:501::2 +V6ADDRS[p7]=2001:db8:701::1 +V6ADDRS[p8]=2001:db8:701::2 + +# Test networks: +# [1] = default table +# [2] = VRF +# +# /32 host routes +declare -A TEST_NET4 +TEST_NET4[1]=169.254.101 +TEST_NET4[2]=169.254.102 +# /128 host routes +declare -A TEST_NET6 +TEST_NET6[1]=2001:db8:101 +TEST_NET6[2]=2001:db8:102 + +# connected gateway +CONGW[1]=169.254.1.254 +CONGW[2]=169.254.5.254 + +# recursive gateway +RECGW4[1]=169.254.11.254 +RECGW4[2]=169.254.12.254 +RECGW6[1]=2001:db8:11::64 +RECGW6[2]=2001:db8:12::64 + +# for v4 mapped to v6 +declare -A TEST_NET4IN6IN6 +TEST_NET4IN6[1]=10.1.1.254 +TEST_NET4IN6[2]=10.2.1.254 + +# mcast address +MCAST6=ff02::1 + + +PEER_NS=bart +PEER_CMD="ip netns exec ${PEER_NS}" +VRF=lisa +VRF_TABLE=1101 +PBR_TABLE=101 + +################################################################################ +# utilities + +log_test() +{ + local rc=$1 + local expected=$2 + local msg="$3" + + if [ ${rc} -eq ${expected} ]; then + nsuccess=$((nsuccess+1)) + printf "\n TEST: %-50s [ OK ]\n" "${msg}" + else + nfail=$((nfail+1)) + printf "\n TEST: %-50s [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 +} + +log_section() +{ + echo + echo "######################################################################" + echo "TEST SECTION: $*" + echo "######################################################################" +} + +log_subsection() +{ + echo + echo "#########################################" + echo "TEST SUBSECTION: $*" +} + +run_cmd() +{ + echo + echo "COMMAND: $*" + eval $* +} + +get_linklocal() +{ + local dev=$1 + local pfx + local addr + + addr=$(${pfx} ip -6 -br addr show dev ${dev} | \ + awk '{ + for (i = 3; i <= NF; ++i) { + if ($i ~ /^fe80/) + print $i + } + }' + ) + addr=${addr//*} + + [ -z "$addr" ] && return 1 + + echo $addr + + return 0 +} + +################################################################################ +# + +setup() +{ + echo + echo "########################################" + echo "Configuring interfaces" + + set -e + + # create namespace + ip netns add ${PEER_NS} + ip -netns ${PEER_NS} li set lo up + + # add vrf table + ip li add ${VRF} type vrf table ${VRF_TABLE} + ip li set ${VRF} up + ip ro add table ${VRF_TABLE} unreachable default + ip -6 ro add table ${VRF_TABLE} unreachable default + + # create test interfaces + ip li add ${NETIFS[p1]} type veth peer name ${NETIFS[p2]} + ip li add ${NETIFS[p3]} type veth peer name ${NETIFS[p4]} + ip li add ${NETIFS[p5]} type veth peer name ${NETIFS[p6]} + ip li add ${NETIFS[p7]} type veth peer name ${NETIFS[p8]} + + # enslave vrf interfaces + for n in 5 7; do + ip li set ${NETIFS[p${n}]} vrf ${VRF} + done + + # add addresses + for n in 1 3 5 7; do + ip li set ${NETIFS[p${n}]} up + ip addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]} + ip addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} + done + + # move peer interfaces to namespace and add addresses + for n in 2 4 6 8; do + ip li set ${NETIFS[p${n}]} netns ${PEER_NS} up + ip -netns ${PEER_NS} addr add ${V4ADDRS[p${n}]}/24 dev ${NETIFS[p${n}]} + ip -netns ${PEER_NS} addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} + done + + set +e + + # let DAD complete - assume default of 1 probe + sleep 1 +} + +cleanup() +{ + # make sure we start from a clean slate + ip netns del ${PEER_NS} 2>/dev/null + for n in 1 3 5 7; do + ip link del ${NETIFS[p${n}]} 2>/dev/null + done + ip link del ${VRF} 2>/dev/null + ip ro flush table ${VRF_TABLE} + ip -6 ro flush table ${VRF_TABLE} +} + +################################################################################ +# IPv4 tests +# + +run_ip() +{ + local table="$1" + local prefix="$2" + local gw="$3" + local dev="$4" + local exp_rc="$5" + local desc="$6" + + # dev arg may be empty + [ -n "${dev}" ] && dev="dev ${dev}" + + run_cmd ip ro add table "${table}" "${prefix}"/32 via "${gw}" "${dev}" onlink + log_test $? ${exp_rc} "${desc}" +} + +valid_onlink_ipv4() +{ + # - unicast connected, unicast recursive + # + log_subsection "default VRF - main table" + + run_ip 254 ${TEST_NET4[1]}.1 ${CONGW[1]} ${NETIFS[p1]} 0 "unicast connected" + run_ip 254 ${TEST_NET4[1]}.2 ${RECGW4[1]} ${NETIFS[p1]} 0 "unicast recursive" + + log_subsection "VRF ${VRF}" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.1 ${CONGW[2]} ${NETIFS[p5]} 0 "unicast connected" + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.2 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive" + + log_subsection "VRF device, PBR table" + + run_ip ${PBR_TABLE} ${TEST_NET4[2]}.3 ${CONGW[2]} ${NETIFS[p5]} 0 "unicast connected" + run_ip ${PBR_TABLE} ${TEST_NET4[2]}.4 ${RECGW4[2]} ${NETIFS[p5]} 0 "unicast recursive" +} + +invalid_onlink_ipv4() +{ + run_ip 254 ${TEST_NET4[1]}.11 ${V4ADDRS[p1]} ${NETIFS[p1]} 2 \ + "Invalid gw - local unicast address" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.11 ${V4ADDRS[p5]} ${NETIFS[p5]} 2 \ + "Invalid gw - local unicast address, VRF" + + run_ip 254 ${TEST_NET4[1]}.101 ${V4ADDRS[p1]} "" 2 "No nexthop device given" + + run_ip 254 ${TEST_NET4[1]}.102 ${V4ADDRS[p3]} ${NETIFS[p1]} 2 \ + "Gateway resolves to wrong nexthop device" + + run_ip ${VRF_TABLE} ${TEST_NET4[2]}.103 ${V4ADDRS[p7]} ${NETIFS[p5]} 2 \ + "Gateway resolves to wrong nexthop device - VRF" +} + +################################################################################ +# IPv6 tests +# + +run_ip6() +{ + local table="$1" + local prefix="$2" + local gw="$3" + local dev="$4" + local exp_rc="$5" + local desc="$6" + + # dev arg may be empty + [ -n "${dev}" ] && dev="dev ${dev}" + + run_cmd ip -6 ro add table "${table}" "${prefix}"/128 via "${gw}" "${dev}" onlink + log_test $? ${exp_rc} "${desc}" +} + +valid_onlink_ipv6() +{ + # - unicast connected, unicast recursive, v4-mapped + # + log_subsection "default VRF - main table" + + run_ip6 254 ${TEST_NET6[1]}::1 ${V6ADDRS[p1]/::*}::64 ${NETIFS[p1]} 0 "unicast connected" + run_ip6 254 ${TEST_NET6[1]}::2 ${RECGW6[1]} ${NETIFS[p1]} 0 "unicast recursive" + run_ip6 254 ${TEST_NET6[1]}::3 ::ffff:${TEST_NET4IN6[1]} ${NETIFS[p1]} 0 "v4-mapped" + + log_subsection "VRF ${VRF}" + + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::1 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::2 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::3 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped" + + log_subsection "VRF device, PBR table" + + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::4 ${V6ADDRS[p5]/::*}::64 ${NETIFS[p5]} 0 "unicast connected" + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::5 ${RECGW6[2]} ${NETIFS[p5]} 0 "unicast recursive" + run_ip6 ${PBR_TABLE} ${TEST_NET6[2]}::6 ::ffff:${TEST_NET4IN6[2]} ${NETIFS[p5]} 0 "v4-mapped" +} + +invalid_onlink_ipv6() +{ + local lladdr + + lladdr=$(get_linklocal ${NETIFS[p1]}) || return 1 + + run_ip6 254 ${TEST_NET6[1]}::11 ${V6ADDRS[p1]} ${NETIFS[p1]} 2 \ + "Invalid gw - local unicast address" + run_ip6 254 ${TEST_NET6[1]}::12 ${lladdr} ${NETIFS[p1]} 2 \ + "Invalid gw - local linklocal address" + run_ip6 254 ${TEST_NET6[1]}::12 ${MCAST6} ${NETIFS[p1]} 2 \ + "Invalid gw - multicast address" + + lladdr=$(get_linklocal ${NETIFS[p5]}) || return 1 + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::11 ${V6ADDRS[p5]} ${NETIFS[p5]} 2 \ + "Invalid gw - local unicast address, VRF" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${lladdr} ${NETIFS[p5]} 2 \ + "Invalid gw - local linklocal address, VRF" + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::12 ${MCAST6} ${NETIFS[p5]} 2 \ + "Invalid gw - multicast address, VRF" + + run_ip6 254 ${TEST_NET6[1]}::101 ${V6ADDRS[p1]} "" 2 \ + "No nexthop device given" + + # default VRF validation is done against LOCAL table + # run_ip6 254 ${TEST_NET6[1]}::102 ${V6ADDRS[p3]/::[0-9]/::64} ${NETIFS[p1]} 2 \ + # "Gateway resolves to wrong nexthop device" + + run_ip6 ${VRF_TABLE} ${TEST_NET6[2]}::103 ${V6ADDRS[p7]/::[0-9]/::64} ${NETIFS[p5]} 2 \ + "Gateway resolves to wrong nexthop device - VRF" +} + +run_onlink_tests() +{ + log_section "IPv4 onlink" + log_subsection "Valid onlink commands" + valid_onlink_ipv4 + log_subsection "Invalid onlink commands" + invalid_onlink_ipv4 + + log_section "IPv6 onlink" + log_subsection "Valid onlink commands" + valid_onlink_ipv6 + invalid_onlink_ipv6 +} + +################################################################################ +# main + +nsuccess=0 +nfail=0 + +cleanup +setup +run_onlink_tests +cleanup + +if [ "$TESTS" != "none" ]; then + printf "\nTests passed: %3d\n" ${nsuccess} + printf "Tests failed: %3d\n" ${nfail} +fi