gre_multipath_nh_res.sh (9491B)
1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4# Test traffic distribution when a wECMP route forwards traffic to two GRE 5# tunnels. 6# 7# +-------------------------+ 8# | H1 | 9# | $h1 + | 10# | 192.0.2.1/28 | | 11# | 2001:db8:1::1/64 | | 12# +-------------------|-----+ 13# | 14# +-------------------|------------------------+ 15# | SW1 | | 16# | $ol1 + | 17# | 192.0.2.2/28 | 18# | 2001:db8:1::2/64 | 19# | | 20# | + g1a (gre) + g1b (gre) | 21# | loc=192.0.2.65 loc=192.0.2.81 | 22# | rem=192.0.2.66 --. rem=192.0.2.82 --. | 23# | tos=inherit | tos=inherit | | 24# | .------------------' | | 25# | | .------------------' | 26# | v v | 27# | + $ul1.111 (vlan) + $ul1.222 (vlan) | 28# | | 192.0.2.129/28 | 192.0.2.145/28 | 29# | \ / | 30# | \________________/ | 31# | | | 32# | + $ul1 | 33# +------------|-------------------------------+ 34# | 35# +------------|-------------------------------+ 36# | SW2 + $ul2 | 37# | _______|________ | 38# | / \ | 39# | / \ | 40# | + $ul2.111 (vlan) + $ul2.222 (vlan) | 41# | ^ 192.0.2.130/28 ^ 192.0.2.146/28 | 42# | | | | 43# | | '------------------. | 44# | '------------------. | | 45# | + g2a (gre) | + g2b (gre) | | 46# | loc=192.0.2.66 | loc=192.0.2.82 | | 47# | rem=192.0.2.65 --' rem=192.0.2.81 --' | 48# | tos=inherit tos=inherit | 49# | | 50# | $ol2 + | 51# | 192.0.2.17/28 | | 52# | 2001:db8:2::1/64 | | 53# +-------------------|------------------------+ 54# | 55# +-------------------|-----+ 56# | H2 | | 57# | $h2 + | 58# | 192.0.2.18/28 | 59# | 2001:db8:2::2/64 | 60# +-------------------------+ 61 62ALL_TESTS=" 63 ping_ipv4 64 ping_ipv6 65 multipath_ipv4 66 multipath_ipv6 67 multipath_ipv6_l4 68" 69 70NUM_NETIFS=6 71source lib.sh 72 73h1_create() 74{ 75 simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 76 ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 77 ip route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 78} 79 80h1_destroy() 81{ 82 ip route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 83 ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 84 simple_if_fini $h1 192.0.2.1/28 85} 86 87sw1_create() 88{ 89 simple_if_init $ol1 192.0.2.2/28 2001:db8:1::2/64 90 __simple_if_init $ul1 v$ol1 91 vlan_create $ul1 111 v$ol1 192.0.2.129/28 92 vlan_create $ul1 222 v$ol1 192.0.2.145/28 93 94 tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1 95 __simple_if_init g1a v$ol1 192.0.2.65/32 96 ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130 97 98 tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1 99 __simple_if_init g1b v$ol1 192.0.2.81/32 100 ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146 101 102 ip -6 nexthop add id 101 dev g1a 103 ip -6 nexthop add id 102 dev g1b 104 ip nexthop add id 103 group 101/102 type resilient buckets 512 \ 105 idle_timer 0 106 107 ip route add vrf v$ol1 192.0.2.16/28 nhid 103 108 ip route add vrf v$ol1 2001:db8:2::/64 nhid 103 109} 110 111sw1_destroy() 112{ 113 ip route del vrf v$ol1 2001:db8:2::/64 114 ip route del vrf v$ol1 192.0.2.16/28 115 116 ip nexthop del id 103 117 ip -6 nexthop del id 102 118 ip -6 nexthop del id 101 119 120 ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 121 __simple_if_fini g1b 192.0.2.81/32 122 tunnel_destroy g1b 123 124 ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 125 __simple_if_fini g1a 192.0.2.65/32 126 tunnel_destroy g1a 127 128 vlan_destroy $ul1 222 129 vlan_destroy $ul1 111 130 __simple_if_fini $ul1 131 simple_if_fini $ol1 192.0.2.2/28 2001:db8:1::2/64 132} 133 134sw2_create() 135{ 136 simple_if_init $ol2 192.0.2.17/28 2001:db8:2::1/64 137 __simple_if_init $ul2 v$ol2 138 vlan_create $ul2 111 v$ol2 192.0.2.130/28 139 vlan_create $ul2 222 v$ol2 192.0.2.146/28 140 141 tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 142 __simple_if_init g2a v$ol2 192.0.2.66/32 143 ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 144 145 tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2 146 __simple_if_init g2b v$ol2 192.0.2.82/32 147 ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145 148 149 ip -6 nexthop add id 201 dev g2a 150 ip -6 nexthop add id 202 dev g2b 151 ip nexthop add id 203 group 201/202 type resilient buckets 512 \ 152 idle_timer 0 153 154 ip route add vrf v$ol2 192.0.2.0/28 nhid 203 155 ip route add vrf v$ol2 2001:db8:1::/64 nhid 203 156 157 tc qdisc add dev $ul2 clsact 158 tc filter add dev $ul2 ingress pref 111 prot 802.1Q \ 159 flower vlan_id 111 action pass 160 tc filter add dev $ul2 ingress pref 222 prot 802.1Q \ 161 flower vlan_id 222 action pass 162} 163 164sw2_destroy() 165{ 166 tc qdisc del dev $ul2 clsact 167 168 ip route del vrf v$ol2 2001:db8:1::/64 169 ip route del vrf v$ol2 192.0.2.0/28 170 171 ip nexthop del id 203 172 ip -6 nexthop del id 202 173 ip -6 nexthop del id 201 174 175 ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 176 __simple_if_fini g2b 192.0.2.82/32 177 tunnel_destroy g2b 178 179 ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 180 __simple_if_fini g2a 192.0.2.66/32 181 tunnel_destroy g2a 182 183 vlan_destroy $ul2 222 184 vlan_destroy $ul2 111 185 __simple_if_fini $ul2 186 simple_if_fini $ol2 192.0.2.17/28 2001:db8:2::1/64 187} 188 189h2_create() 190{ 191 simple_if_init $h2 192.0.2.18/28 2001:db8:2::2/64 192 ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 193 ip route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 194} 195 196h2_destroy() 197{ 198 ip route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 199 ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 200 simple_if_fini $h2 192.0.2.18/28 2001:db8:2::2/64 201} 202 203setup_prepare() 204{ 205 h1=${NETIFS[p1]} 206 ol1=${NETIFS[p2]} 207 208 ul1=${NETIFS[p3]} 209 ul2=${NETIFS[p4]} 210 211 ol2=${NETIFS[p5]} 212 h2=${NETIFS[p6]} 213 214 vrf_prepare 215 h1_create 216 sw1_create 217 sw2_create 218 h2_create 219 220 forwarding_enable 221} 222 223cleanup() 224{ 225 pre_cleanup 226 227 forwarding_restore 228 229 h2_destroy 230 sw2_destroy 231 sw1_destroy 232 h1_destroy 233 vrf_cleanup 234} 235 236multipath4_test() 237{ 238 local what=$1; shift 239 local weight1=$1; shift 240 local weight2=$1; shift 241 242 sysctl_set net.ipv4.fib_multipath_hash_policy 1 243 ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ 244 type resilient 245 246 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 247 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 248 249 ip vrf exec v$h1 \ 250 $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ 251 -d 1msec -t udp "sp=1024,dp=0-32768" 252 253 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 254 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 255 256 local d111=$((t1_111 - t0_111)) 257 local d222=$((t1_222 - t0_222)) 258 multipath_eval "$what" $weight1 $weight2 $d111 $d222 259 260 ip nexthop replace id 103 group 101/102 type resilient 261 sysctl_restore net.ipv4.fib_multipath_hash_policy 262} 263 264multipath6_test() 265{ 266 local what=$1; shift 267 local weight1=$1; shift 268 local weight2=$1; shift 269 270 sysctl_set net.ipv6.fib_multipath_hash_policy 0 271 ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ 272 type resilient 273 274 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 275 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 276 277 # Generate 16384 echo requests, each with a random flow label. 278 for ((i=0; i < 16384; ++i)); do 279 ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null 280 done 281 282 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 283 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 284 285 local d111=$((t1_111 - t0_111)) 286 local d222=$((t1_222 - t0_222)) 287 multipath_eval "$what" $weight1 $weight2 $d111 $d222 288 289 ip nexthop replace id 103 group 101/102 type resilient 290 sysctl_restore net.ipv6.fib_multipath_hash_policy 291} 292 293multipath6_l4_test() 294{ 295 local what=$1; shift 296 local weight1=$1; shift 297 local weight2=$1; shift 298 299 sysctl_set net.ipv6.fib_multipath_hash_policy 1 300 ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ 301 type resilient 302 303 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 304 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 305 306 ip vrf exec v$h1 \ 307 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::1 -B 2001:db8:2::2 \ 308 -d 1msec -t udp "sp=1024,dp=0-32768" 309 310 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 311 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 312 313 local d111=$((t1_111 - t0_111)) 314 local d222=$((t1_222 - t0_222)) 315 multipath_eval "$what" $weight1 $weight2 $d111 $d222 316 317 ip nexthop replace id 103 group 101/102 type resilient 318 sysctl_restore net.ipv6.fib_multipath_hash_policy 319} 320 321ping_ipv4() 322{ 323 ping_test $h1 192.0.2.18 324} 325 326ping_ipv6() 327{ 328 ping6_test $h1 2001:db8:2::2 329} 330 331multipath_ipv4() 332{ 333 log_info "Running IPv4 multipath tests" 334 multipath4_test "ECMP" 1 1 335 multipath4_test "Weighted MP 2:1" 2 1 336 multipath4_test "Weighted MP 11:45" 11 45 337} 338 339multipath_ipv6() 340{ 341 log_info "Running IPv6 multipath tests" 342 multipath6_test "ECMP" 1 1 343 multipath6_test "Weighted MP 2:1" 2 1 344 multipath6_test "Weighted MP 11:45" 11 45 345} 346 347multipath_ipv6_l4() 348{ 349 log_info "Running IPv6 L4 hash multipath tests" 350 multipath6_l4_test "ECMP" 1 1 351 multipath6_l4_test "Weighted MP 2:1" 2 1 352 multipath6_l4_test "Weighted MP 11:45" 11 45 353} 354 355trap cleanup EXIT 356 357setup_prepare 358setup_wait 359tests_run 360 361exit $EXIT_STATUS