#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # This test is for checking IPv4 and IPv6 FIB behavior in response to # different events. ret=0 # Kselftest framework requirement - SKIP code is 4. ksft_skip=4 # all tests in this script. Can be overridden with -t option TESTS="unregister down carrier nexthop ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric" VERBOSE=0 PAUSE_ON_FAIL=no PAUSE=no IP="ip -netns testns" log_test() { local rc=$1 local expected=$2 local msg="$3" if [ ${rc} -eq ${expected} ]; then printf " TEST: %-60s [ OK ]\n" "${msg}" nsuccess=$((nsuccess+1)) else ret=1 nfail=$((nfail+1)) printf " TEST: %-60s [FAIL]\n" "${msg}" if [ "${PAUSE_ON_FAIL}" = "yes" ]; then echo echo "hit enter to continue, 'q' to quit" read a [ "$a" = "q" ] && exit 1 fi fi if [ "${PAUSE}" = "yes" ]; then echo echo "hit enter to continue, 'q' to quit" read a [ "$a" = "q" ] && exit 1 fi } setup() { set -e ip netns add testns $IP link set dev lo up $IP link add dummy0 type dummy $IP link set dev dummy0 up $IP address add 198.51.100.1/24 dev dummy0 $IP -6 address add 2001:db8:1::1/64 dev dummy0 set +e } cleanup() { $IP link del dev dummy0 &> /dev/null ip netns del testns } get_linklocal() { local dev=$1 local addr addr=$($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 } fib_unreg_unicast_test() { echo echo "Single path route test" setup echo " Start point" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 0 "IPv6 fibmatch" set -e $IP link del dev dummy0 set +e echo " Nexthop device deleted" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 2 "IPv4 fibmatch - no route" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 2 "IPv6 fibmatch - no route" cleanup } fib_unreg_multipath_test() { echo echo "Multipath route test" setup set -e $IP link add dummy1 type dummy $IP link set dev dummy1 up $IP address add 192.0.2.1/24 dev dummy1 $IP -6 address add 2001:db8:2::1/64 dev dummy1 $IP route add 203.0.113.0/24 \ nexthop via 198.51.100.2 dev dummy0 \ nexthop via 192.0.2.2 dev dummy1 $IP -6 route add 2001:db8:3::/64 \ nexthop via 2001:db8:1::2 dev dummy0 \ nexthop via 2001:db8:2::2 dev dummy1 set +e echo " Start point" $IP route get fibmatch 203.0.113.1 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null log_test $? 0 "IPv6 fibmatch" set -e $IP link del dev dummy0 set +e echo " One nexthop device deleted" $IP route get fibmatch 203.0.113.1 &> /dev/null log_test $? 2 "IPv4 - multipath route removed on delete" $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null # In IPv6 we do not flush the entire multipath route. log_test $? 0 "IPv6 - multipath down to single path" set -e $IP link del dev dummy1 set +e echo " Second nexthop device deleted" $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null log_test $? 2 "IPv6 - no route" cleanup } fib_unreg_test() { fib_unreg_unicast_test fib_unreg_multipath_test } fib_down_unicast_test() { echo echo "Single path, admin down" setup echo " Start point" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 0 "IPv6 fibmatch" set -e $IP link set dev dummy0 down set +e echo " Route deleted on down" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 2 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 2 "IPv6 fibmatch" cleanup } fib_down_multipath_test_do() { local down_dev=$1 local up_dev=$2 $IP route get fibmatch 203.0.113.1 \ oif $down_dev &> /dev/null log_test $? 2 "IPv4 fibmatch on down device" $IP -6 route get fibmatch 2001:db8:3::1 \ oif $down_dev &> /dev/null log_test $? 2 "IPv6 fibmatch on down device" $IP route get fibmatch 203.0.113.1 \ oif $up_dev &> /dev/null log_test $? 0 "IPv4 fibmatch on up device" $IP -6 route get fibmatch 2001:db8:3::1 \ oif $up_dev &> /dev/null log_test $? 0 "IPv6 fibmatch on up device" $IP route get fibmatch 203.0.113.1 | \ grep $down_dev | grep -q "dead linkdown" log_test $? 0 "IPv4 flags on down device" $IP -6 route get fibmatch 2001:db8:3::1 | \ grep $down_dev | grep -q "dead linkdown" log_test $? 0 "IPv6 flags on down device" $IP route get fibmatch 203.0.113.1 | \ grep $up_dev | grep -q "dead linkdown" log_test $? 1 "IPv4 flags on up device" $IP -6 route get fibmatch 2001:db8:3::1 | \ grep $up_dev | grep -q "dead linkdown" log_test $? 1 "IPv6 flags on up device" } fib_down_multipath_test() { echo echo "Admin down multipath" setup set -e $IP link add dummy1 type dummy $IP link set dev dummy1 up $IP address add 192.0.2.1/24 dev dummy1 $IP -6 address add 2001:db8:2::1/64 dev dummy1 $IP route add 203.0.113.0/24 \ nexthop via 198.51.100.2 dev dummy0 \ nexthop via 192.0.2.2 dev dummy1 $IP -6 route add 2001:db8:3::/64 \ nexthop via 2001:db8:1::2 dev dummy0 \ nexthop via 2001:db8:2::2 dev dummy1 set +e echo " Verify start point" $IP route get fibmatch 203.0.113.1 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null log_test $? 0 "IPv6 fibmatch" set -e $IP link set dev dummy0 down set +e echo " One device down, one up" fib_down_multipath_test_do "dummy0" "dummy1" set -e $IP link set dev dummy0 up $IP link set dev dummy1 down set +e echo " Other device down and up" fib_down_multipath_test_do "dummy1" "dummy0" set -e $IP link set dev dummy0 down set +e echo " Both devices down" $IP route get fibmatch 203.0.113.1 &> /dev/null log_test $? 2 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:3::1 &> /dev/null log_test $? 2 "IPv6 fibmatch" $IP link del dev dummy1 cleanup } fib_down_test() { fib_down_unicast_test fib_down_multipath_test } # Local routes should not be affected when carrier changes. fib_carrier_local_test() { echo echo "Local carrier tests - single path" setup set -e $IP link set dev dummy0 carrier on set +e echo " Start point" $IP route get fibmatch 198.51.100.1 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::1 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 198.51.100.1 | \ grep -q "linkdown" log_test $? 1 "IPv4 - no linkdown flag" $IP -6 route get fibmatch 2001:db8:1::1 | \ grep -q "linkdown" log_test $? 1 "IPv6 - no linkdown flag" set -e $IP link set dev dummy0 carrier off sleep 1 set +e echo " Carrier off on nexthop" $IP route get fibmatch 198.51.100.1 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::1 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 198.51.100.1 | \ grep -q "linkdown" log_test $? 1 "IPv4 - linkdown flag set" $IP -6 route get fibmatch 2001:db8:1::1 | \ grep -q "linkdown" log_test $? 1 "IPv6 - linkdown flag set" set -e $IP address add 192.0.2.1/24 dev dummy0 $IP -6 address add 2001:db8:2::1/64 dev dummy0 set +e echo " Route to local address with carrier down" $IP route get fibmatch 192.0.2.1 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:2::1 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 192.0.2.1 | \ grep -q "linkdown" log_test $? 1 "IPv4 linkdown flag set" $IP -6 route get fibmatch 2001:db8:2::1 | \ grep -q "linkdown" log_test $? 1 "IPv6 linkdown flag set" cleanup } fib_carrier_unicast_test() { ret=0 echo echo "Single path route carrier test" setup set -e $IP link set dev dummy0 carrier on set +e echo " Start point" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 198.51.100.2 | \ grep -q "linkdown" log_test $? 1 "IPv4 no linkdown flag" $IP -6 route get fibmatch 2001:db8:1::2 | \ grep -q "linkdown" log_test $? 1 "IPv6 no linkdown flag" set -e $IP link set dev dummy0 carrier off sleep 1 set +e echo " Carrier down" $IP route get fibmatch 198.51.100.2 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:1::2 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 198.51.100.2 | \ grep -q "linkdown" log_test $? 0 "IPv4 linkdown flag set" $IP -6 route get fibmatch 2001:db8:1::2 | \ grep -q "linkdown" log_test $? 0 "IPv6 linkdown flag set" set -e $IP address add 192.0.2.1/24 dev dummy0 $IP -6 address add 2001:db8:2::1/64 dev dummy0 set +e echo " Second address added with carrier down" $IP route get fibmatch 192.0.2.2 &> /dev/null log_test $? 0 "IPv4 fibmatch" $IP -6 route get fibmatch 2001:db8:2::2 &> /dev/null log_test $? 0 "IPv6 fibmatch" $IP route get fibmatch 192.0.2.2 | \ grep -q "linkdown" log_test $? 0 "IPv4 linkdown flag set" $IP -6 route get fibmatch 2001:db8:2::2 | \ grep -q "linkdown" log_test $? 0 "IPv6 linkdown flag set" cleanup } fib_carrier_test() { fib_carrier_local_test fib_carrier_unicast_test } ################################################################################ # Tests on nexthop spec # run 'ip route add' with given spec add_rt() { local desc="$1" local erc=$2 local vrf=$3 local pfx=$4 local gw=$5 local dev=$6 local cmd out rc [ "$vrf" = "-" ] && vrf="default" [ -n "$gw" ] && gw="via $gw" [ -n "$dev" ] && dev="dev $dev" cmd="$IP route add vrf $vrf $pfx $gw $dev" if [ "$VERBOSE" = "1" ]; then printf "\n COMMAND: $cmd\n" fi out=$(eval $cmd 2>&1) rc=$? if [ "$VERBOSE" = "1" -a -n "$out" ]; then echo " $out" fi log_test $rc $erc "$desc" } fib4_nexthop() { echo echo "IPv4 nexthop tests" echo "<<< write me >>>" } fib6_nexthop() { local lldummy=$(get_linklocal dummy0) local llv1=$(get_linklocal dummy0) if [ -z "$lldummy" ]; then echo "Failed to get linklocal address for dummy0" return 1 fi if [ -z "$llv1" ]; then echo "Failed to get linklocal address for veth1" return 1 fi echo echo "IPv6 nexthop tests" add_rt "Directly connected nexthop, unicast address" 0 \ - 2001:db8:101::/64 2001:db8:1::2 add_rt "Directly connected nexthop, unicast address with device" 0 \ - 2001:db8:102::/64 2001:db8:1::2 "dummy0" add_rt "Gateway is linklocal address" 0 \ - 2001:db8:103::1/64 $llv1 "veth0" # fails because LL address requires a device add_rt "Gateway is linklocal address, no device" 2 \ - 2001:db8:104::1/64 $llv1 # local address can not be a gateway add_rt "Gateway can not be local unicast address" 2 \ - 2001:db8:105::/64 2001:db8:1::1 add_rt "Gateway can not be local unicast address, with device" 2 \ - 2001:db8:106::/64 2001:db8:1::1 "dummy0" add_rt "Gateway can not be a local linklocal address" 2 \ - 2001:db8:107::1/64 $lldummy "dummy0" # VRF tests add_rt "Gateway can be local address in a VRF" 0 \ - 2001:db8:108::/64 2001:db8:51::2 add_rt "Gateway can be local address in a VRF, with device" 0 \ - 2001:db8:109::/64 2001:db8:51::2 "veth0" add_rt "Gateway can be local linklocal address in a VRF" 0 \ - 2001:db8:110::1/64 $llv1 "veth0" add_rt "Redirect to VRF lookup" 0 \ - 2001:db8:111::/64 "" "red" add_rt "VRF route, gateway can be local address in default VRF" 0 \ red 2001:db8:112::/64 2001:db8:51::1 # local address in same VRF fails add_rt "VRF route, gateway can not be a local address" 2 \ red 2001:db8:113::1/64 2001:db8:2::1 add_rt "VRF route, gateway can not be a local addr with device" 2 \ red 2001:db8:114::1/64 2001:db8:2::1 "dummy1" } # Default VRF: # dummy0 - 198.51.100.1/24 2001:db8:1::1/64 # veth0 - 192.0.2.1/24 2001:db8:51::1/64 # # VRF red: # dummy1 - 192.168.2.1/24 2001:db8:2::1/64 # veth1 - 192.0.2.2/24 2001:db8:51::2/64 # # [ dummy0 veth0 ]--[ veth1 dummy1 ] fib_nexthop_test() { setup set -e $IP -4 rule add pref 32765 table local $IP -4 rule del pref 0 $IP -6 rule add pref 32765 table local $IP -6 rule del pref 0 $IP link add red type vrf table 1 $IP link set red up $IP -4 route add vrf red unreachable default metric 4278198272 $IP -6 route add vrf red unreachable default metric 4278198272 $IP link add veth0 type veth peer name veth1 $IP link set dev veth0 up $IP address add 192.0.2.1/24 dev veth0 $IP -6 address add 2001:db8:51::1/64 dev veth0 $IP link set dev veth1 vrf red up $IP address add 192.0.2.2/24 dev veth1 $IP -6 address add 2001:db8:51::2/64 dev veth1 $IP link add dummy1 type dummy $IP link set dev dummy1 vrf red up $IP address add 192.168.2.1/24 dev dummy1 $IP -6 address add 2001:db8:2::1/64 dev dummy1 set +e sleep 1 fib4_nexthop fib6_nexthop ( $IP link del dev dummy1 $IP link del veth0 $IP link del red ) 2>/dev/null cleanup } ################################################################################ # Tests on route add and replace run_cmd() { local cmd="$1" local out local stderr="2>/dev/null" if [ "$VERBOSE" = "1" ]; then printf " COMMAND: $cmd\n" stderr= fi out=$(eval $cmd $stderr) rc=$? if [ "$VERBOSE" = "1" -a -n "$out" ]; then echo " $out" fi [ "$VERBOSE" = "1" ] && echo return $rc } check_expected() { local out="$1" local expected="$2" local rc=0 [ "${out}" = "${expected}" ] && return 0 if [ -z "${out}" ]; then if [ "$VERBOSE" = "1" ]; then printf "\nNo route entry found\n" printf "Expected:\n" printf " ${expected}\n" fi return 1 fi # tricky way to convert output to 1-line without ip's # messy '\'; this drops all extra white space out=$(echo ${out}) if [ "${out}" != "${expected}" ]; then rc=1 if [ "${VERBOSE}" = "1" ]; then printf " Unexpected route entry. Have:\n" printf " ${out}\n" printf " Expected:\n" printf " ${expected}\n\n" fi fi return $rc } # add route for a prefix, flushing any existing routes first # expected to be the first step of a test add_route6() { local pfx="$1" local nh="$2" local out if [ "$VERBOSE" = "1" ]; then echo echo " ##################################################" echo fi run_cmd "$IP -6 ro flush ${pfx}" [ $? -ne 0 ] && exit 1 out=$($IP -6 ro ls match ${pfx}) if [ -n "$out" ]; then echo "Failed to flush routes for prefix used for tests." exit 1 fi run_cmd "$IP -6 ro add ${pfx} ${nh}" if [ $? -ne 0 ]; then echo "Failed to add initial route for test." exit 1 fi } # add initial route - used in replace route tests add_initial_route6() { add_route6 "2001:db8:104::/64" "$1" } check_route6() { local pfx="2001:db8:104::/64" local expected="$1" local out local rc=0 out=$($IP -6 ro ls match ${pfx} | sed -e 's/ pref medium//') check_expected "${out}" "${expected}" } route_cleanup() { $IP li del red 2>/dev/null $IP li del dummy1 2>/dev/null $IP li del veth1 2>/dev/null $IP li del veth3 2>/dev/null cleanup &> /dev/null } route_setup() { route_cleanup setup [ "${VERBOSE}" = "1" ] && set -x set -e $IP li add red up type vrf table 101 $IP li add veth1 type veth peer name veth2 $IP li add veth3 type veth peer name veth4 $IP li set veth1 up $IP li set veth3 up $IP li set veth2 vrf red up $IP li set veth4 vrf red up $IP li add dummy1 type dummy $IP li set dummy1 vrf red up $IP -6 addr add 2001:db8:101::1/64 dev veth1 $IP -6 addr add 2001:db8:101::2/64 dev veth2 $IP -6 addr add 2001:db8:103::1/64 dev veth3 $IP -6 addr add 2001:db8:103::2/64 dev veth4 $IP -6 addr add 2001:db8:104::1/64 dev dummy1 $IP addr add 172.16.101.1/24 dev veth1 $IP addr add 172.16.101.2/24 dev veth2 $IP addr add 172.16.103.1/24 dev veth3 $IP addr add 172.16.103.2/24 dev veth4 $IP addr add 172.16.104.1/24 dev dummy1 set +e } # assumption is that basic add of a single path route works # otherwise just adding an address on an interface is broken ipv6_rt_add() { local rc echo echo "IPv6 route add / append tests" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::2" log_test $? 2 "Attempt to add duplicate route - gw" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" run_cmd "$IP -6 ro add 2001:db8:104::/64 dev veth3" log_test $? 2 "Attempt to add duplicate route - dev only" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" run_cmd "$IP -6 ro add unreachable 2001:db8:104::/64" log_test $? 2 "Attempt to add duplicate route - reject route" # route append with same prefix adds a new route # - iproute2 sets NLM_F_CREATE | NLM_F_APPEND add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" run_cmd "$IP -6 ro append 2001:db8:104::/64 via 2001:db8:103::2" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" log_test $? 0 "Append nexthop to existing route - gw" # insert mpath directly add_route6 "2001:db8:104::/64" "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" log_test $? 0 "Add multipath route" add_route6 "2001:db8:104::/64" "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro add 2001:db8:104::/64 nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" log_test $? 2 "Attempt to add duplicate multipath route" # insert of a second route without append but different metric add_route6 "2001:db8:104::/64" "via 2001:db8:101::2" run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::2 metric 512" rc=$? if [ $rc -eq 0 ]; then run_cmd "$IP -6 ro add 2001:db8:104::/64 via 2001:db8:103::3 metric 256" rc=$? fi log_test $rc 0 "Route add with different metrics" run_cmd "$IP -6 ro del 2001:db8:104::/64 metric 512" rc=$? if [ $rc -eq 0 ]; then check_route6 "2001:db8:104::/64 via 2001:db8:103::3 dev veth3 metric 256 2001:db8:104::/64 via 2001:db8:101::2 dev veth1 metric 1024" rc=$? fi log_test $rc 0 "Route delete with metric" } ipv6_rt_replace_single() { # single path with single path # add_initial_route6 "via 2001:db8:101::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:103::2" check_route6 "2001:db8:104::/64 via 2001:db8:103::2 dev veth3 metric 1024" log_test $? 0 "Single path with single path" # single path with multipath # add_initial_route6 "nexthop via 2001:db8:101::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::2" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::3 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" log_test $? 0 "Single path with multipath" # single path with single path using MULTIPATH attribute # add_initial_route6 "via 2001:db8:101::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:103::2" check_route6 "2001:db8:104::/64 via 2001:db8:103::2 dev veth3 metric 1024" log_test $? 0 "Single path with single path via multipath attribute" # route replace fails - invalid nexthop add_initial_route6 "via 2001:db8:101::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:104::2" if [ $? -eq 0 ]; then # previous command is expected to fail so if it returns 0 # that means the test failed. log_test 0 1 "Invalid nexthop" else check_route6 "2001:db8:104::/64 via 2001:db8:101::2 dev veth1 metric 1024" log_test $? 0 "Invalid nexthop" fi # replace non-existent route # - note use of change versus replace since ip adds NLM_F_CREATE # for replace add_initial_route6 "via 2001:db8:101::2" run_cmd "$IP -6 ro change 2001:db8:105::/64 via 2001:db8:101::2" log_test $? 2 "Single path - replace of non-existent route" } ipv6_rt_replace_mpath() { # multipath with multipath add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::3" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::3 dev veth1 weight 1 nexthop via 2001:db8:103::3 dev veth3 weight 1" log_test $? 0 "Multipath with multipath" # multipath with single add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 via 2001:db8:101::3" check_route6 "2001:db8:104::/64 via 2001:db8:101::3 dev veth1 metric 1024" log_test $? 0 "Multipath with single path" # multipath with single add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3" check_route6 "2001:db8:104::/64 via 2001:db8:101::3 dev veth1 metric 1024" log_test $? 0 "Multipath with single path via multipath attribute" # multipath with dev-only add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 dev veth1" check_route6 "2001:db8:104::/64 dev veth1 metric 1024" log_test $? 0 "Multipath with dev-only" # route replace fails - invalid nexthop 1 add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:111::3 nexthop via 2001:db8:103::3" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" log_test $? 0 "Multipath - invalid first nexthop" # route replace fails - invalid nexthop 2 add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro replace 2001:db8:104::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:113::3" check_route6 "2001:db8:104::/64 metric 1024 nexthop via 2001:db8:101::2 dev veth1 weight 1 nexthop via 2001:db8:103::2 dev veth3 weight 1" log_test $? 0 "Multipath - invalid second nexthop" # multipath non-existent route add_initial_route6 "nexthop via 2001:db8:101::2 nexthop via 2001:db8:103::2" run_cmd "$IP -6 ro change 2001:db8:105::/64 nexthop via 2001:db8:101::3 nexthop via 2001:db8:103::3" log_test $? 2 "Multipath - replace of non-existent route" } ipv6_rt_replace() { echo echo "IPv6 route replace tests" ipv6_rt_replace_single ipv6_rt_replace_mpath } ipv6_route_test() { route_setup ipv6_rt_add ipv6_rt_replace route_cleanup } ip_addr_metric_check() { ip addr help 2>&1 | grep -q metric if [ $? -ne 0 ]; then echo "iproute2 command does not support metric for addresses. Skipping test" return 1 fi return 0 } ipv6_addr_metric_test() { local rc echo echo "IPv6 prefix route tests" ip_addr_metric_check || return 1 setup set -e $IP li add dummy1 type dummy $IP li add dummy2 type dummy $IP li set dummy1 up $IP li set dummy2 up # default entry is metric 256 run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64" run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64" set +e check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 256 2001:db8:104::/64 dev dummy2 proto kernel metric 256" log_test $? 0 "Default metric" set -e run_cmd "$IP -6 addr flush dev dummy1" run_cmd "$IP -6 addr add dev dummy1 2001:db8:104::1/64 metric 257" set +e check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 256 2001:db8:104::/64 dev dummy1 proto kernel metric 257" log_test $? 0 "User specified metric on first device" set -e run_cmd "$IP -6 addr flush dev dummy2" run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::2/64 metric 258" set +e check_route6 "2001:db8:104::/64 dev dummy1 proto kernel metric 257 2001:db8:104::/64 dev dummy2 proto kernel metric 258" log_test $? 0 "User specified metric on second device" run_cmd "$IP -6 addr del dev dummy1 2001:db8:104::1/64 metric 257" rc=$? if [ $rc -eq 0 ]; then check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 258" rc=$? fi log_test $rc 0 "Delete of address on first device" run_cmd "$IP -6 addr change dev dummy2 2001:db8:104::2/64 metric 259" rc=$? if [ $rc -eq 0 ]; then check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259" rc=$? fi log_test $rc 0 "Modify metric of address" # verify prefix route removed on down run_cmd "ip netns exec testns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1" run_cmd "$IP li set dev dummy2 down" rc=$? if [ $rc -eq 0 ]; then out=$($IP -6 ro ls match 2001:db8:104::/64) check_expected "${out}" "" rc=$? fi log_test $rc 0 "Prefix route removed on link down" # verify prefix route re-inserted with assigned metric run_cmd "$IP li set dev dummy2 up" rc=$? if [ $rc -eq 0 ]; then check_route6 "2001:db8:104::/64 dev dummy2 proto kernel metric 259" rc=$? fi log_test $rc 0 "Prefix route with metric on link up" # verify peer metric added correctly set -e run_cmd "$IP -6 addr flush dev dummy2" run_cmd "$IP -6 addr add dev dummy2 2001:db8:104::1 peer 2001:db8:104::2 metric 260" set +e check_route6 "2001:db8:104::1 dev dummy2 proto kernel metric 260" log_test $? 0 "Set metric with peer route on local side" check_route6 "2001:db8:104::2 dev dummy2 proto kernel metric 260" log_test $? 0 "Set metric with peer route on peer side" set -e run_cmd "$IP -6 addr change dev dummy2 2001:db8:104::1 peer 2001:db8:104::3 metric 261" set +e check_route6 "2001:db8:104::1 dev dummy2 proto kernel metric 261" log_test $? 0 "Modify metric and peer address on local side" check_route6 "2001:db8:104::3 dev dummy2 proto kernel metric 261" log_test $? 0 "Modify metric and peer address on peer side" $IP li del dummy1 $IP li del dummy2 cleanup } # add route for a prefix, flushing any existing routes first # expected to be the first step of a test add_route() { local pfx="$1" local nh="$2" local out if [ "$VERBOSE" = "1" ]; then echo echo " ##################################################" echo fi run_cmd "$IP ro flush ${pfx}" [ $? -ne 0 ] && exit 1 out=$($IP ro ls match ${pfx}) if [ -n "$out" ]; then echo "Failed to flush routes for prefix used for tests." exit 1 fi run_cmd "$IP ro add ${pfx} ${nh}" if [ $? -ne 0 ]; then echo "Failed to add initial route for test." exit 1 fi } # add initial route - used in replace route tests add_initial_route() { add_route "172.16.104.0/24" "$1" } check_route() { local pfx="172.16.104.0/24" local expected="$1" local out out=$($IP ro ls match ${pfx}) check_expected "${out}" "${expected}" } # assumption is that basic add of a single path route works # otherwise just adding an address on an interface is broken ipv4_rt_add() { local rc echo echo "IPv4 route add / append tests" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.2" log_test $? 2 "Attempt to add duplicate route - gw" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro add 172.16.104.0/24 dev veth3" log_test $? 2 "Attempt to add duplicate route - dev only" # route add same prefix - fails with EEXISTS b/c ip adds NLM_F_EXCL add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro add unreachable 172.16.104.0/24" log_test $? 2 "Attempt to add duplicate route - reject route" # iproute2 prepend only sets NLM_F_CREATE # - adds a new route; does NOT convert existing route to ECMP add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro prepend 172.16.104.0/24 via 172.16.103.2" check_route "172.16.104.0/24 via 172.16.103.2 dev veth3 172.16.104.0/24 via 172.16.101.2 dev veth1" log_test $? 0 "Add new nexthop for existing prefix" # route append with same prefix adds a new route # - iproute2 sets NLM_F_CREATE | NLM_F_APPEND add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro append 172.16.104.0/24 via 172.16.103.2" check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 via 172.16.103.2 dev veth3" log_test $? 0 "Append nexthop to existing route - gw" add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro append 172.16.104.0/24 dev veth3" check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 dev veth3 scope link" log_test $? 0 "Append nexthop to existing route - dev only" add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro append unreachable 172.16.104.0/24" check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 unreachable 172.16.104.0/24" log_test $? 0 "Append nexthop to existing route - reject route" run_cmd "$IP ro flush 172.16.104.0/24" run_cmd "$IP ro add unreachable 172.16.104.0/24" run_cmd "$IP ro append 172.16.104.0/24 via 172.16.103.2" check_route "unreachable 172.16.104.0/24 172.16.104.0/24 via 172.16.103.2 dev veth3" log_test $? 0 "Append nexthop to existing reject route - gw" run_cmd "$IP ro flush 172.16.104.0/24" run_cmd "$IP ro add unreachable 172.16.104.0/24" run_cmd "$IP ro append 172.16.104.0/24 dev veth3" check_route "unreachable 172.16.104.0/24 172.16.104.0/24 dev veth3 scope link" log_test $? 0 "Append nexthop to existing reject route - dev only" # insert mpath directly add_route "172.16.104.0/24" "nexthop via 172.16.101.2 nexthop via 172.16.103.2" check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" log_test $? 0 "add multipath route" add_route "172.16.104.0/24" "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro add 172.16.104.0/24 nexthop via 172.16.101.2 nexthop via 172.16.103.2" log_test $? 2 "Attempt to add duplicate multipath route" # insert of a second route without append but different metric add_route "172.16.104.0/24" "via 172.16.101.2" run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.2 metric 512" rc=$? if [ $rc -eq 0 ]; then run_cmd "$IP ro add 172.16.104.0/24 via 172.16.103.3 metric 256" rc=$? fi log_test $rc 0 "Route add with different metrics" run_cmd "$IP ro del 172.16.104.0/24 metric 512" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.0/24 via 172.16.101.2 dev veth1 172.16.104.0/24 via 172.16.103.3 dev veth3 metric 256" rc=$? fi log_test $rc 0 "Route delete with metric" } ipv4_rt_replace_single() { # single path with single path # add_initial_route "via 172.16.101.2" run_cmd "$IP ro replace 172.16.104.0/24 via 172.16.103.2" check_route "172.16.104.0/24 via 172.16.103.2 dev veth3" log_test $? 0 "Single path with single path" # single path with multipath # add_initial_route "nexthop via 172.16.101.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.2" check_route "172.16.104.0/24 nexthop via 172.16.101.3 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" log_test $? 0 "Single path with multipath" # single path with reject # add_initial_route "nexthop via 172.16.101.2" run_cmd "$IP ro replace unreachable 172.16.104.0/24" check_route "unreachable 172.16.104.0/24" log_test $? 0 "Single path with reject route" # single path with single path using MULTIPATH attribute # add_initial_route "via 172.16.101.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.103.2" check_route "172.16.104.0/24 via 172.16.103.2 dev veth3" log_test $? 0 "Single path with single path via multipath attribute" # route replace fails - invalid nexthop add_initial_route "via 172.16.101.2" run_cmd "$IP ro replace 172.16.104.0/24 via 2001:db8:104::2" if [ $? -eq 0 ]; then # previous command is expected to fail so if it returns 0 # that means the test failed. log_test 0 1 "Invalid nexthop" else check_route "172.16.104.0/24 via 172.16.101.2 dev veth1" log_test $? 0 "Invalid nexthop" fi # replace non-existent route # - note use of change versus replace since ip adds NLM_F_CREATE # for replace add_initial_route "via 172.16.101.2" run_cmd "$IP ro change 172.16.105.0/24 via 172.16.101.2" log_test $? 2 "Single path - replace of non-existent route" } ipv4_rt_replace_mpath() { # multipath with multipath add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.3" check_route "172.16.104.0/24 nexthop via 172.16.101.3 dev veth1 weight 1 nexthop via 172.16.103.3 dev veth3 weight 1" log_test $? 0 "Multipath with multipath" # multipath with single add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace 172.16.104.0/24 via 172.16.101.3" check_route "172.16.104.0/24 via 172.16.101.3 dev veth1" log_test $? 0 "Multipath with single path" # multipath with single add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3" check_route "172.16.104.0/24 via 172.16.101.3 dev veth1" log_test $? 0 "Multipath with single path via multipath attribute" # multipath with reject add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace unreachable 172.16.104.0/24" check_route "unreachable 172.16.104.0/24" log_test $? 0 "Multipath with reject route" # route replace fails - invalid nexthop 1 add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.111.3 nexthop via 172.16.103.3" check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" log_test $? 0 "Multipath - invalid first nexthop" # route replace fails - invalid nexthop 2 add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro replace 172.16.104.0/24 nexthop via 172.16.101.3 nexthop via 172.16.113.3" check_route "172.16.104.0/24 nexthop via 172.16.101.2 dev veth1 weight 1 nexthop via 172.16.103.2 dev veth3 weight 1" log_test $? 0 "Multipath - invalid second nexthop" # multipath non-existent route add_initial_route "nexthop via 172.16.101.2 nexthop via 172.16.103.2" run_cmd "$IP ro change 172.16.105.0/24 nexthop via 172.16.101.3 nexthop via 172.16.103.3" log_test $? 2 "Multipath - replace of non-existent route" } ipv4_rt_replace() { echo echo "IPv4 route replace tests" ipv4_rt_replace_single ipv4_rt_replace_mpath } ipv4_route_test() { route_setup ipv4_rt_add ipv4_rt_replace route_cleanup } ipv4_addr_metric_test() { local rc echo echo "IPv4 prefix route tests" ip_addr_metric_check || return 1 setup set -e $IP li add dummy1 type dummy $IP li add dummy2 type dummy $IP li set dummy1 up $IP li set dummy2 up # default entry is metric 256 run_cmd "$IP addr add dev dummy1 172.16.104.1/24" run_cmd "$IP addr add dev dummy2 172.16.104.2/24" set +e check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2" log_test $? 0 "Default metric" set -e run_cmd "$IP addr flush dev dummy1" run_cmd "$IP addr add dev dummy1 172.16.104.1/24 metric 257" set +e check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257" log_test $? 0 "User specified metric on first device" set -e run_cmd "$IP addr flush dev dummy2" run_cmd "$IP addr add dev dummy2 172.16.104.2/24 metric 258" set +e check_route "172.16.104.0/24 dev dummy1 proto kernel scope link src 172.16.104.1 metric 257 172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258" log_test $? 0 "User specified metric on second device" run_cmd "$IP addr del dev dummy1 172.16.104.1/24 metric 257" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 258" rc=$? fi log_test $rc 0 "Delete of address on first device" run_cmd "$IP addr change dev dummy2 172.16.104.2/24 metric 259" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259" rc=$? fi log_test $rc 0 "Modify metric of address" # verify prefix route removed on down run_cmd "$IP li set dev dummy2 down" rc=$? if [ $rc -eq 0 ]; then out=$($IP ro ls match 172.16.104.0/24) check_expected "${out}" "" rc=$? fi log_test $rc 0 "Prefix route removed on link down" # verify prefix route re-inserted with assigned metric run_cmd "$IP li set dev dummy2 up" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.2 metric 259" rc=$? fi log_test $rc 0 "Prefix route with metric on link up" # explicitly check for metric changes on edge scenarios run_cmd "$IP addr flush dev dummy2" run_cmd "$IP addr add dev dummy2 172.16.104.0/24 metric 259" run_cmd "$IP addr change dev dummy2 172.16.104.0/24 metric 260" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.0/24 dev dummy2 proto kernel scope link src 172.16.104.0 metric 260" rc=$? fi log_test $rc 0 "Modify metric of .0/24 address" run_cmd "$IP addr flush dev dummy2" run_cmd "$IP addr add dev dummy2 172.16.104.1/32 peer 172.16.104.2 metric 260" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.2 dev dummy2 proto kernel scope link src 172.16.104.1 metric 260" rc=$? fi log_test $rc 0 "Set metric of address with peer route" run_cmd "$IP addr change dev dummy2 172.16.104.1/32 peer 172.16.104.3 metric 261" rc=$? if [ $rc -eq 0 ]; then check_route "172.16.104.3 dev dummy2 proto kernel scope link src 172.16.104.1 metric 261" rc=$? fi log_test $rc 0 "Modify metric and peer address for peer route" $IP li del dummy1 $IP li del dummy2 cleanup } ################################################################################ # usage usage() { cat < Test(s) to run (default: all) (options: $TESTS) -p Pause on fail -P Pause after each test before cleanup -v verbose mode (show commands and output) EOF } ################################################################################ # main while getopts :t:pPhv o do case $o in t) TESTS=$OPTARG;; p) PAUSE_ON_FAIL=yes;; P) PAUSE=yes;; v) VERBOSE=$(($VERBOSE + 1));; h) usage; exit 0;; *) usage; exit 1;; esac done PEER_CMD="ip netns exec ${PEER_NS}" # make sure we don't pause twice [ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no if [ "$(id -u)" -ne 0 ];then echo "SKIP: Need root privileges" exit $ksft_skip; fi if [ ! -x "$(command -v ip)" ]; then echo "SKIP: Could not run test without ip tool" exit $ksft_skip fi ip route help 2>&1 | grep -q fibmatch if [ $? -ne 0 ]; then echo "SKIP: iproute2 too old, missing fibmatch" exit $ksft_skip fi # start clean cleanup &> /dev/null for t in $TESTS do case $t in fib_unreg_test|unregister) fib_unreg_test;; fib_down_test|down) fib_down_test;; fib_carrier_test|carrier) fib_carrier_test;; fib_nexthop_test|nexthop) fib_nexthop_test;; ipv6_route_test|ipv6_rt) ipv6_route_test;; ipv4_route_test|ipv4_rt) ipv4_route_test;; ipv6_addr_metric) ipv6_addr_metric_test;; ipv4_addr_metric) ipv4_addr_metric_test;; help) echo "Test names: $TESTS"; exit 0;; esac done if [ "$TESTS" != "none" ]; then printf "\nTests passed: %3d\n" ${nsuccess} printf "Tests failed: %3d\n" ${nfail} fi exit $ret