350 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03#4# Test unicast FIB offload indication.5 6lib_dir=$(dirname $0)/../../../net/forwarding7 8ALL_TESTS="9 ipv6_route_add10 ipv6_route_replace11 ipv6_route_nexthop_group_share12 ipv6_route_rate13"14NUM_NETIFS=415source $lib_dir/lib.sh16source $lib_dir/devlink_lib.sh17 18tor1_create()19{20 simple_if_init $tor1_p1 2001:db8:1::2/128 2001:db8:1::3/12821}22 23tor1_destroy()24{25 simple_if_fini $tor1_p1 2001:db8:1::2/128 2001:db8:1::3/12826}27 28tor2_create()29{30 simple_if_init $tor2_p1 2001:db8:2::2/128 2001:db8:2::3/12831}32 33tor2_destroy()34{35 simple_if_fini $tor2_p1 2001:db8:2::2/128 2001:db8:2::3/12836}37 38spine_create()39{40 ip link set dev $spine_p1 up41 ip link set dev $spine_p2 up42 43 __addr_add_del $spine_p1 add 2001:db8:1::1/6444 __addr_add_del $spine_p2 add 2001:db8:2::1/6445}46 47spine_destroy()48{49 __addr_add_del $spine_p2 del 2001:db8:2::1/6450 __addr_add_del $spine_p1 del 2001:db8:1::1/6451 52 ip link set dev $spine_p2 down53 ip link set dev $spine_p1 down54}55 56ipv6_offload_check()57{58 local pfx="$1"; shift59 local expected_num=$1; shift60 local num61 62 # Try to avoid races with route offload63 sleep .164 65 num=$(ip -6 route show match ${pfx} | grep "offload" | wc -l)66 67 if [ $num -eq $expected_num ]; then68 return 069 fi70 71 return 172}73 74ipv6_route_add_prefix()75{76 RET=077 78 # Add a prefix route and check that it is offloaded.79 ip -6 route add 2001:db8:3::/64 dev $spine_p1 metric 10080 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 181 check_err $? "prefix route not offloaded"82 83 # Append an identical prefix route with an higher metric and check that84 # offload indication did not change.85 ip -6 route append 2001:db8:3::/64 dev $spine_p1 metric 20086 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 187 check_err $? "lowest metric not offloaded after append"88 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 200" 089 check_err $? "highest metric offloaded when should not"90 91 # Prepend an identical prefix route with lower metric and check that92 # it is offloaded and the others are not.93 ip -6 route append 2001:db8:3::/64 dev $spine_p1 metric 1094 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 10" 195 check_err $? "lowest metric not offloaded after prepend"96 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 100" 097 check_err $? "mid metric offloaded when should not"98 ipv6_offload_check "2001:db8:3::/64 dev $spine_p1 metric 200" 099 check_err $? "highest metric offloaded when should not"100 101 # Delete the routes and add the same route with a different nexthop102 # device. Check that it is offloaded.103 ip -6 route flush 2001:db8:3::/64 dev $spine_p1104 ip -6 route add 2001:db8:3::/64 dev $spine_p2105 ipv6_offload_check "2001:db8:3::/64 dev $spine_p2" 1106 107 log_test "IPv6 prefix route add"108 109 ip -6 route flush 2001:db8:3::/64110}111 112ipv6_route_add_mpath()113{114 RET=0115 116 # Add a multipath route and check that it is offloaded.117 ip -6 route add 2001:db8:3::/64 metric 100 \118 nexthop via 2001:db8:1::2 dev $spine_p1 \119 nexthop via 2001:db8:2::2 dev $spine_p2120 ipv6_offload_check "2001:db8:3::/64 metric 100" 2121 check_err $? "multipath route not offloaded when should"122 123 # Append another nexthop and check that it is offloaded as well.124 ip -6 route append 2001:db8:3::/64 metric 100 \125 nexthop via 2001:db8:1::3 dev $spine_p1126 ipv6_offload_check "2001:db8:3::/64 metric 100" 3127 check_err $? "appended nexthop not offloaded when should"128 129 # Mimic route replace by removing the route and adding it back with130 # only two nexthops.131 ip -6 route del 2001:db8:3::/64132 ip -6 route add 2001:db8:3::/64 metric 100 \133 nexthop via 2001:db8:1::2 dev $spine_p1 \134 nexthop via 2001:db8:2::2 dev $spine_p2135 ipv6_offload_check "2001:db8:3::/64 metric 100" 2136 check_err $? "multipath route not offloaded after delete & add"137 138 # Append a nexthop with an higher metric and check that the offload139 # indication did not change.140 ip -6 route append 2001:db8:3::/64 metric 200 \141 nexthop via 2001:db8:1::3 dev $spine_p1142 ipv6_offload_check "2001:db8:3::/64 metric 100" 2143 check_err $? "lowest metric not offloaded after append"144 ipv6_offload_check "2001:db8:3::/64 metric 200" 0145 check_err $? "highest metric offloaded when should not"146 147 # Prepend a nexthop with a lower metric and check that it is offloaded148 # and the others are not.149 ip -6 route append 2001:db8:3::/64 metric 10 \150 nexthop via 2001:db8:1::3 dev $spine_p1151 ipv6_offload_check "2001:db8:3::/64 metric 10" 1152 check_err $? "lowest metric not offloaded after prepend"153 ipv6_offload_check "2001:db8:3::/64 metric 100" 0154 check_err $? "mid metric offloaded when should not"155 ipv6_offload_check "2001:db8:3::/64 metric 200" 0156 check_err $? "highest metric offloaded when should not"157 158 log_test "IPv6 multipath route add"159 160 ip -6 route flush 2001:db8:3::/64161}162 163ipv6_route_add()164{165 ipv6_route_add_prefix166 ipv6_route_add_mpath167}168 169ipv6_route_replace()170{171 RET=0172 173 # Replace prefix route with prefix route.174 ip -6 route add 2001:db8:3::/64 metric 100 dev $spine_p1175 ipv6_offload_check "2001:db8:3::/64 metric 100" 1176 check_err $? "prefix route not offloaded when should"177 ip -6 route replace 2001:db8:3::/64 metric 100 dev $spine_p2178 ipv6_offload_check "2001:db8:3::/64 metric 100" 1179 check_err $? "prefix route not offloaded after replace"180 181 # Replace prefix route with multipath route.182 ip -6 route replace 2001:db8:3::/64 metric 100 \183 nexthop via 2001:db8:1::2 dev $spine_p1 \184 nexthop via 2001:db8:2::2 dev $spine_p2185 ipv6_offload_check "2001:db8:3::/64 metric 100" 2186 check_err $? "multipath route not offloaded after replace"187 188 # Replace multipath route with prefix route. A prefix route cannot189 # replace a multipath route, so it is appended.190 ip -6 route replace 2001:db8:3::/64 metric 100 dev $spine_p1191 ipv6_offload_check "2001:db8:3::/64 metric 100 dev $spine_p1" 0192 check_err $? "prefix route offloaded after 'replacing' multipath route"193 ipv6_offload_check "2001:db8:3::/64 metric 100" 2194 check_err $? "multipath route not offloaded after being 'replaced' by prefix route"195 196 # Replace multipath route with multipath route.197 ip -6 route replace 2001:db8:3::/64 metric 100 \198 nexthop via 2001:db8:1::3 dev $spine_p1 \199 nexthop via 2001:db8:2::3 dev $spine_p2200 ipv6_offload_check "2001:db8:3::/64 metric 100" 2201 check_err $? "multipath route not offloaded after replacing multipath route"202 203 # Replace a non-existing multipath route with a multipath route and204 # check that it is appended and not offloaded.205 ip -6 route replace 2001:db8:3::/64 metric 200 \206 nexthop via 2001:db8:1::3 dev $spine_p1 \207 nexthop via 2001:db8:2::3 dev $spine_p2208 ipv6_offload_check "2001:db8:3::/64 metric 100" 2209 check_err $? "multipath route not offloaded after non-existing route was 'replaced'"210 ipv6_offload_check "2001:db8:3::/64 metric 200" 0211 check_err $? "multipath route offloaded after 'replacing' non-existing route"212 213 log_test "IPv6 route replace"214 215 ip -6 route flush 2001:db8:3::/64216}217 218ipv6_route_nexthop_group_share()219{220 RET=0221 222 # The driver consolidates identical nexthop groups in order to reduce223 # the resource usage in its adjacency table. Check that the deletion224 # of one multipath route using the group does not affect the other.225 ip -6 route add 2001:db8:3::/64 \226 nexthop via 2001:db8:1::2 dev $spine_p1 \227 nexthop via 2001:db8:2::2 dev $spine_p2228 ip -6 route add 2001:db8:4::/64 \229 nexthop via 2001:db8:1::2 dev $spine_p1 \230 nexthop via 2001:db8:2::2 dev $spine_p2231 ipv6_offload_check "2001:db8:3::/64" 2232 check_err $? "multipath route not offloaded when should"233 ipv6_offload_check "2001:db8:4::/64" 2234 check_err $? "multipath route not offloaded when should"235 ip -6 route del 2001:db8:3::/64236 ipv6_offload_check "2001:db8:4::/64" 2237 check_err $? "multipath route not offloaded after deletion of route sharing the nexthop group"238 239 # Check that after unsharing a nexthop group the routes are still240 # marked as offloaded.241 ip -6 route add 2001:db8:3::/64 \242 nexthop via 2001:db8:1::2 dev $spine_p1 \243 nexthop via 2001:db8:2::2 dev $spine_p2244 ip -6 route del 2001:db8:4::/64 \245 nexthop via 2001:db8:1::2 dev $spine_p1246 ipv6_offload_check "2001:db8:4::/64" 1247 check_err $? "singlepath route not offloaded after unsharing the nexthop group"248 ipv6_offload_check "2001:db8:3::/64" 2249 check_err $? "multipath route not offloaded after unsharing the nexthop group"250 251 log_test "IPv6 nexthop group sharing"252 253 ip -6 route flush 2001:db8:3::/64254 ip -6 route flush 2001:db8:4::/64255}256 257ipv6_route_rate()258{259 local batch_dir=$(mktemp -d)260 local num_rts=$((40 * 1024))261 local num_nhs=16262 local total263 local start264 local diff265 local end266 local nhs267 local i268 269 RET=0270 271 # Prepare 40K /64 multipath routes with 16 nexthops each and check how272 # long it takes to add them. A limit of 60 seconds is set. It is much273 # higher than insertion should take and meant to flag a serious274 # regression.275 total=$((nums_nhs * num_rts))276 277 for i in $(seq 1 $num_nhs); do278 ip -6 address add 2001:db8:1::10:$i/128 dev $tor1_p1279 nexthops+=" nexthop via 2001:db8:1::10:$i dev $spine_p1"280 done281 282 for i in $(seq 1 $num_rts); do283 echo "route add 2001:db8:8:$(printf "%x" $i)::/64$nexthops" \284 >> $batch_dir/add.batch285 echo "route del 2001:db8:8:$(printf "%x" $i)::/64$nexthops" \286 >> $batch_dir/del.batch287 done288 289 start=$(date +%s.%N)290 291 ip -batch $batch_dir/add.batch292 count=$(ip -6 route show | grep offload | wc -l)293 while [ $count -lt $total ]; do294 sleep .01295 count=$(ip -6 route show | grep offload | wc -l)296 done297 298 end=$(date +%s.%N)299 300 diff=$(echo "$end - $start" | bc -l)301 test "$(echo "$diff > 60" | bc -l)" -eq 0302 check_err $? "route insertion took too long"303 log_info "inserted $num_rts routes in $diff seconds"304 305 log_test "IPv6 routes insertion rate"306 307 ip -batch $batch_dir/del.batch308 for i in $(seq 1 $num_nhs); do309 ip -6 address del 2001:db8:1::10:$i/128 dev $tor1_p1310 done311 rm -rf $batch_dir312}313 314setup_prepare()315{316 spine_p1=${NETIFS[p1]}317 tor1_p1=${NETIFS[p2]}318 319 spine_p2=${NETIFS[p3]}320 tor2_p1=${NETIFS[p4]}321 322 vrf_prepare323 forwarding_enable324 325 tor1_create326 tor2_create327 spine_create328}329 330cleanup()331{332 pre_cleanup333 334 spine_destroy335 tor2_destroy336 tor1_destroy337 338 forwarding_restore339 vrf_cleanup340}341 342trap cleanup EXIT343 344setup_prepare345setup_wait346 347tests_run348 349exit $EXIT_STATUS350