1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4ALL_TESTS=" 5 ping_ipv4 6 ping_ipv6 7 multipath_test 8" 9NUM_NETIFS=8 10source lib.sh 11 12h1_create() 13{ 14 vrf_create "vrf-h1" 15 ip link set dev $h1 master vrf-h1 16 17 ip link set dev vrf-h1 up 18 ip link set dev $h1 up 19 20 ip address add 192.0.2.2/24 dev $h1 21 ip address add 2001:db8:1::2/64 dev $h1 22 23 ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 24 ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 25} 26 27h1_destroy() 28{ 29 ip route del 2001:db8:2::/64 vrf vrf-h1 30 ip route del 198.51.100.0/24 vrf vrf-h1 31 32 ip address del 2001:db8:1::2/64 dev $h1 33 ip address del 192.0.2.2/24 dev $h1 34 35 ip link set dev $h1 down 36 vrf_destroy "vrf-h1" 37} 38 39h2_create() 40{ 41 vrf_create "vrf-h2" 42 ip link set dev $h2 master vrf-h2 43 44 ip link set dev vrf-h2 up 45 ip link set dev $h2 up 46 47 ip address add 198.51.100.2/24 dev $h2 48 ip address add 2001:db8:2::2/64 dev $h2 49 50 ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 51 ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 52} 53 54h2_destroy() 55{ 56 ip route del 2001:db8:1::/64 vrf vrf-h2 57 ip route del 192.0.2.0/24 vrf vrf-h2 58 59 ip address del 2001:db8:2::2/64 dev $h2 60 ip address del 198.51.100.2/24 dev $h2 61 62 ip link set dev $h2 down 63 vrf_destroy "vrf-h2" 64} 65 66router1_create() 67{ 68 vrf_create "vrf-r1" 69 ip link set dev $rp11 master vrf-r1 70 ip link set dev $rp12 master vrf-r1 71 ip link set dev $rp13 master vrf-r1 72 73 ip link set dev vrf-r1 up 74 ip link set dev $rp11 up 75 ip link set dev $rp12 up 76 ip link set dev $rp13 up 77 78 ip address add 192.0.2.1/24 dev $rp11 79 ip address add 2001:db8:1::1/64 dev $rp11 80 81 ip address add 169.254.2.12/24 dev $rp12 82 ip address add fe80:2::12/64 dev $rp12 83 84 ip address add 169.254.3.13/24 dev $rp13 85 ip address add fe80:3::13/64 dev $rp13 86} 87 88router1_destroy() 89{ 90 ip route del 2001:db8:2::/64 vrf vrf-r1 91 ip route del 198.51.100.0/24 vrf vrf-r1 92 93 ip address del fe80:3::13/64 dev $rp13 94 ip address del 169.254.3.13/24 dev $rp13 95 96 ip address del fe80:2::12/64 dev $rp12 97 ip address del 169.254.2.12/24 dev $rp12 98 99 ip address del 2001:db8:1::1/64 dev $rp11 100 ip address del 192.0.2.1/24 dev $rp11 101 102 ip nexthop del id 103 103 ip nexthop del id 101 104 ip nexthop del id 102 105 ip nexthop del id 106 106 ip nexthop del id 104 107 ip nexthop del id 105 108 109 ip link set dev $rp13 down 110 ip link set dev $rp12 down 111 ip link set dev $rp11 down 112 113 vrf_destroy "vrf-r1" 114} 115 116router2_create() 117{ 118 vrf_create "vrf-r2" 119 ip link set dev $rp21 master vrf-r2 120 ip link set dev $rp22 master vrf-r2 121 ip link set dev $rp23 master vrf-r2 122 123 ip link set dev vrf-r2 up 124 ip link set dev $rp21 up 125 ip link set dev $rp22 up 126 ip link set dev $rp23 up 127 128 ip address add 198.51.100.1/24 dev $rp21 129 ip address add 2001:db8:2::1/64 dev $rp21 130 131 ip address add 169.254.2.22/24 dev $rp22 132 ip address add fe80:2::22/64 dev $rp22 133 134 ip address add 169.254.3.23/24 dev $rp23 135 ip address add fe80:3::23/64 dev $rp23 136} 137 138router2_destroy() 139{ 140 ip route del 2001:db8:1::/64 vrf vrf-r2 141 ip route del 192.0.2.0/24 vrf vrf-r2 142 143 ip address del fe80:3::23/64 dev $rp23 144 ip address del 169.254.3.23/24 dev $rp23 145 146 ip address del fe80:2::22/64 dev $rp22 147 ip address del 169.254.2.22/24 dev $rp22 148 149 ip address del 2001:db8:2::1/64 dev $rp21 150 ip address del 198.51.100.1/24 dev $rp21 151 152 ip nexthop del id 201 153 ip nexthop del id 202 154 ip nexthop del id 204 155 ip nexthop del id 205 156 157 ip link set dev $rp23 down 158 ip link set dev $rp22 down 159 ip link set dev $rp21 down 160 161 vrf_destroy "vrf-r2" 162} 163 164routing_nh_obj() 165{ 166 ip nexthop add id 101 via 169.254.2.22 dev $rp12 167 ip nexthop add id 102 via 169.254.3.23 dev $rp13 168 ip nexthop add id 103 group 101/102 type resilient buckets 512 \ 169 idle_timer 0 170 ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103 171 172 ip nexthop add id 104 via fe80:2::22 dev $rp12 173 ip nexthop add id 105 via fe80:3::23 dev $rp13 174 ip nexthop add id 106 group 104/105 type resilient buckets 512 \ 175 idle_timer 0 176 ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106 177 178 ip nexthop add id 201 via 169.254.2.12 dev $rp22 179 ip nexthop add id 202 via 169.254.3.13 dev $rp23 180 ip nexthop add id 203 group 201/202 type resilient buckets 512 \ 181 idle_timer 0 182 ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203 183 184 ip nexthop add id 204 via fe80:2::12 dev $rp22 185 ip nexthop add id 205 via fe80:3::13 dev $rp23 186 ip nexthop add id 206 group 204/205 type resilient buckets 512 \ 187 idle_timer 0 188 ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206 189} 190 191multipath4_test() 192{ 193 local desc="$1" 194 local weight_rp12=$2 195 local weight_rp13=$3 196 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 197 local packets_rp12 packets_rp13 198 199 # Transmit multiple flows from h1 to h2 and make sure they are 200 # distributed between both multipath links (rp12 and rp13) 201 # according to the provided weights. 202 sysctl_set net.ipv4.fib_multipath_hash_policy 1 203 204 t0_rp12=$(link_stats_tx_packets_get $rp12) 205 t0_rp13=$(link_stats_tx_packets_get $rp13) 206 207 ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \ 208 -d 1msec -t udp "sp=1024,dp=0-32768" 209 210 t1_rp12=$(link_stats_tx_packets_get $rp12) 211 t1_rp13=$(link_stats_tx_packets_get $rp13) 212 213 let "packets_rp12 = $t1_rp12 - $t0_rp12" 214 let "packets_rp13 = $t1_rp13 - $t0_rp13" 215 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 216 217 # Restore settings. 218 sysctl_restore net.ipv4.fib_multipath_hash_policy 219} 220 221multipath6_l4_test() 222{ 223 local desc="$1" 224 local weight_rp12=$2 225 local weight_rp13=$3 226 local t0_rp12 t0_rp13 t1_rp12 t1_rp13 227 local packets_rp12 packets_rp13 228 229 # Transmit multiple flows from h1 to h2 and make sure they are 230 # distributed between both multipath links (rp12 and rp13) 231 # according to the provided weights. 232 sysctl_set net.ipv6.fib_multipath_hash_policy 1 233 234 t0_rp12=$(link_stats_tx_packets_get $rp12) 235 t0_rp13=$(link_stats_tx_packets_get $rp13) 236 237 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \ 238 -d 1msec -t udp "sp=1024,dp=0-32768" 239 240 t1_rp12=$(link_stats_tx_packets_get $rp12) 241 t1_rp13=$(link_stats_tx_packets_get $rp13) 242 243 let "packets_rp12 = $t1_rp12 - $t0_rp12" 244 let "packets_rp13 = $t1_rp13 - $t0_rp13" 245 multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 246 247 sysctl_restore net.ipv6.fib_multipath_hash_policy 248} 249 250multipath_test() 251{ 252 # Without an idle timer, weight replacement should happen immediately. 253 log_info "Running multipath tests without an idle timer" 254 ip nexthop replace id 103 group 101/102 type resilient idle_timer 0 255 ip nexthop replace id 106 group 104/105 type resilient idle_timer 0 256 257 log_info "Running IPv4 multipath tests" 258 ip nexthop replace id 103 group 101,1/102,1 type resilient 259 multipath4_test "ECMP" 1 1 260 ip nexthop replace id 103 group 101,2/102,1 type resilient 261 multipath4_test "Weighted MP 2:1" 2 1 262 ip nexthop replace id 103 group 101,11/102,45 type resilient 263 multipath4_test "Weighted MP 11:45" 11 45 264 265 ip nexthop replace id 103 group 101,1/102,1 type resilient 266 267 log_info "Running IPv6 L4 hash multipath tests" 268 ip nexthop replace id 106 group 104,1/105,1 type resilient 269 multipath6_l4_test "ECMP" 1 1 270 ip nexthop replace id 106 group 104,2/105,1 type resilient 271 multipath6_l4_test "Weighted MP 2:1" 2 1 272 ip nexthop replace id 106 group 104,11/105,45 type resilient 273 multipath6_l4_test "Weighted MP 11:45" 11 45 274 275 ip nexthop replace id 106 group 104,1/105,1 type resilient 276 277 # With an idle timer, weight replacement should not happen, so the 278 # expected ratio should always be the initial one (1:1). 279 log_info "Running multipath tests with an idle timer of 120 seconds" 280 ip nexthop replace id 103 group 101/102 type resilient idle_timer 120 281 ip nexthop replace id 106 group 104/105 type resilient idle_timer 120 282 283 log_info "Running IPv4 multipath tests" 284 ip nexthop replace id 103 group 101,1/102,1 type resilient 285 multipath4_test "ECMP" 1 1 286 ip nexthop replace id 103 group 101,2/102,1 type resilient 287 multipath4_test "Weighted MP 2:1" 1 1 288 ip nexthop replace id 103 group 101,11/102,45 type resilient 289 multipath4_test "Weighted MP 11:45" 1 1 290 291 ip nexthop replace id 103 group 101,1/102,1 type resilient 292 293 log_info "Running IPv6 L4 hash multipath tests" 294 ip nexthop replace id 106 group 104,1/105,1 type resilient 295 multipath6_l4_test "ECMP" 1 1 296 ip nexthop replace id 106 group 104,2/105,1 type resilient 297 multipath6_l4_test "Weighted MP 2:1" 1 1 298 ip nexthop replace id 106 group 104,11/105,45 type resilient 299 multipath6_l4_test "Weighted MP 11:45" 1 1 300 301 ip nexthop replace id 106 group 104,1/105,1 type resilient 302 303 # With a short idle timer and enough idle time, weight replacement 304 # should happen. 305 log_info "Running multipath tests with an idle timer of 5 seconds" 306 ip nexthop replace id 103 group 101/102 type resilient idle_timer 5 307 ip nexthop replace id 106 group 104/105 type resilient idle_timer 5 308 309 log_info "Running IPv4 multipath tests" 310 sleep 10 311 ip nexthop replace id 103 group 101,1/102,1 type resilient 312 multipath4_test "ECMP" 1 1 313 sleep 10 314 ip nexthop replace id 103 group 101,2/102,1 type resilient 315 multipath4_test "Weighted MP 2:1" 2 1 316 sleep 10 317 ip nexthop replace id 103 group 101,11/102,45 type resilient 318 multipath4_test "Weighted MP 11:45" 11 45 319 320 ip nexthop replace id 103 group 101,1/102,1 type resilient 321 322 log_info "Running IPv6 L4 hash multipath tests" 323 sleep 10 324 ip nexthop replace id 106 group 104,1/105,1 type resilient 325 multipath6_l4_test "ECMP" 1 1 326 sleep 10 327 ip nexthop replace id 106 group 104,2/105,1 type resilient 328 multipath6_l4_test "Weighted MP 2:1" 2 1 329 sleep 10 330 ip nexthop replace id 106 group 104,11/105,45 type resilient 331 multipath6_l4_test "Weighted MP 11:45" 11 45 332 333 ip nexthop replace id 106 group 104,1/105,1 type resilient 334} 335 336setup_prepare() 337{ 338 h1=${NETIFS[p1]} 339 rp11=${NETIFS[p2]} 340 341 rp12=${NETIFS[p3]} 342 rp22=${NETIFS[p4]} 343 344 rp13=${NETIFS[p5]} 345 rp23=${NETIFS[p6]} 346 347 rp21=${NETIFS[p7]} 348 h2=${NETIFS[p8]} 349 350 vrf_prepare 351 352 h1_create 353 h2_create 354 355 router1_create 356 router2_create 357 358 forwarding_enable 359} 360 361cleanup() 362{ 363 pre_cleanup 364 365 forwarding_restore 366 367 router2_destroy 368 router1_destroy 369 370 h2_destroy 371 h1_destroy 372 373 vrf_cleanup 374} 375 376ping_ipv4() 377{ 378 ping_test $h1 198.51.100.2 379} 380 381ping_ipv6() 382{ 383 ping6_test $h1 2001:db8:2::2 384} 385 386ip nexthop ls >/dev/null 2>&1 387if [ $? -ne 0 ]; then 388 echo "Nexthop objects not supported; skipping tests" 389 exit 0 390fi 391 392trap cleanup EXIT 393 394setup_prepare 395setup_wait 396routing_nh_obj 397 398tests_run 399 400exit $EXIT_STATUS 401