gre_multipath_nh.sh (9301B)
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 101/102 105 106 ip route add vrf v$ol1 192.0.2.16/28 nhid 103 107 ip route add vrf v$ol1 2001:db8:2::/64 nhid 103 108} 109 110sw1_destroy() 111{ 112 ip route del vrf v$ol1 2001:db8:2::/64 113 ip route del vrf v$ol1 192.0.2.16/28 114 115 ip nexthop del id 103 116 ip -6 nexthop del id 102 117 ip -6 nexthop del id 101 118 119 ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 120 __simple_if_fini g1b 192.0.2.81/32 121 tunnel_destroy g1b 122 123 ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 124 __simple_if_fini g1a 192.0.2.65/32 125 tunnel_destroy g1a 126 127 vlan_destroy $ul1 222 128 vlan_destroy $ul1 111 129 __simple_if_fini $ul1 130 simple_if_fini $ol1 192.0.2.2/28 2001:db8:1::2/64 131} 132 133sw2_create() 134{ 135 simple_if_init $ol2 192.0.2.17/28 2001:db8:2::1/64 136 __simple_if_init $ul2 v$ol2 137 vlan_create $ul2 111 v$ol2 192.0.2.130/28 138 vlan_create $ul2 222 v$ol2 192.0.2.146/28 139 140 tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 141 __simple_if_init g2a v$ol2 192.0.2.66/32 142 ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 143 144 tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2 145 __simple_if_init g2b v$ol2 192.0.2.82/32 146 ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145 147 148 ip -6 nexthop add id 201 dev g2a 149 ip -6 nexthop add id 202 dev g2b 150 ip nexthop add id 203 group 201/202 151 152 ip route add vrf v$ol2 192.0.2.0/28 nhid 203 153 ip route add vrf v$ol2 2001:db8:1::/64 nhid 203 154 155 tc qdisc add dev $ul2 clsact 156 tc filter add dev $ul2 ingress pref 111 prot 802.1Q \ 157 flower vlan_id 111 action pass 158 tc filter add dev $ul2 ingress pref 222 prot 802.1Q \ 159 flower vlan_id 222 action pass 160} 161 162sw2_destroy() 163{ 164 tc qdisc del dev $ul2 clsact 165 166 ip route del vrf v$ol2 2001:db8:1::/64 167 ip route del vrf v$ol2 192.0.2.0/28 168 169 ip nexthop del id 203 170 ip -6 nexthop del id 202 171 ip -6 nexthop del id 201 172 173 ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 174 __simple_if_fini g2b 192.0.2.82/32 175 tunnel_destroy g2b 176 177 ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 178 __simple_if_fini g2a 192.0.2.66/32 179 tunnel_destroy g2a 180 181 vlan_destroy $ul2 222 182 vlan_destroy $ul2 111 183 __simple_if_fini $ul2 184 simple_if_fini $ol2 192.0.2.17/28 2001:db8:2::1/64 185} 186 187h2_create() 188{ 189 simple_if_init $h2 192.0.2.18/28 2001:db8:2::2/64 190 ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 191 ip route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 192} 193 194h2_destroy() 195{ 196 ip route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 197 ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 198 simple_if_fini $h2 192.0.2.18/28 2001:db8:2::2/64 199} 200 201setup_prepare() 202{ 203 h1=${NETIFS[p1]} 204 ol1=${NETIFS[p2]} 205 206 ul1=${NETIFS[p3]} 207 ul2=${NETIFS[p4]} 208 209 ol2=${NETIFS[p5]} 210 h2=${NETIFS[p6]} 211 212 vrf_prepare 213 h1_create 214 sw1_create 215 sw2_create 216 h2_create 217 218 forwarding_enable 219} 220 221cleanup() 222{ 223 pre_cleanup 224 225 forwarding_restore 226 227 h2_destroy 228 sw2_destroy 229 sw1_destroy 230 h1_destroy 231 vrf_cleanup 232} 233 234multipath4_test() 235{ 236 local what=$1; shift 237 local weight1=$1; shift 238 local weight2=$1; shift 239 240 sysctl_set net.ipv4.fib_multipath_hash_policy 1 241 ip nexthop replace id 103 group 101,$weight1/102,$weight2 242 243 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 244 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 245 246 ip vrf exec v$h1 \ 247 $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ 248 -d 1msec -t udp "sp=1024,dp=0-32768" 249 250 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 251 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 252 253 local d111=$((t1_111 - t0_111)) 254 local d222=$((t1_222 - t0_222)) 255 multipath_eval "$what" $weight1 $weight2 $d111 $d222 256 257 ip nexthop replace id 103 group 101/102 258 sysctl_restore net.ipv4.fib_multipath_hash_policy 259} 260 261multipath6_test() 262{ 263 local what=$1; shift 264 local weight1=$1; shift 265 local weight2=$1; shift 266 267 sysctl_set net.ipv6.fib_multipath_hash_policy 0 268 ip nexthop replace id 103 group 101,$weight1/102,$weight2 269 270 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 271 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 272 273 # Generate 16384 echo requests, each with a random flow label. 274 for ((i=0; i < 16384; ++i)); do 275 ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null 276 done 277 278 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 279 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 280 281 local d111=$((t1_111 - t0_111)) 282 local d222=$((t1_222 - t0_222)) 283 multipath_eval "$what" $weight1 $weight2 $d111 $d222 284 285 ip nexthop replace id 103 group 101/102 286 sysctl_restore net.ipv6.fib_multipath_hash_policy 287} 288 289multipath6_l4_test() 290{ 291 local what=$1; shift 292 local weight1=$1; shift 293 local weight2=$1; shift 294 295 sysctl_set net.ipv6.fib_multipath_hash_policy 1 296 ip nexthop replace id 103 group 101,$weight1/102,$weight2 297 298 local t0_111=$(tc_rule_stats_get $ul2 111 ingress) 299 local t0_222=$(tc_rule_stats_get $ul2 222 ingress) 300 301 ip vrf exec v$h1 \ 302 $MZ $h1 -6 -q -p 64 -A 2001:db8:1::1 -B 2001:db8:2::2 \ 303 -d 1msec -t udp "sp=1024,dp=0-32768" 304 305 local t1_111=$(tc_rule_stats_get $ul2 111 ingress) 306 local t1_222=$(tc_rule_stats_get $ul2 222 ingress) 307 308 local d111=$((t1_111 - t0_111)) 309 local d222=$((t1_222 - t0_222)) 310 multipath_eval "$what" $weight1 $weight2 $d111 $d222 311 312 ip nexthop replace id 103 group 101/102 313 sysctl_restore net.ipv6.fib_multipath_hash_policy 314} 315 316ping_ipv4() 317{ 318 ping_test $h1 192.0.2.18 319} 320 321ping_ipv6() 322{ 323 ping6_test $h1 2001:db8:2::2 324} 325 326multipath_ipv4() 327{ 328 log_info "Running IPv4 multipath tests" 329 multipath4_test "ECMP" 1 1 330 multipath4_test "Weighted MP 2:1" 2 1 331 multipath4_test "Weighted MP 11:45" 11 45 332} 333 334multipath_ipv6() 335{ 336 log_info "Running IPv6 multipath tests" 337 multipath6_test "ECMP" 1 1 338 multipath6_test "Weighted MP 2:1" 2 1 339 multipath6_test "Weighted MP 11:45" 11 45 340} 341 342multipath_ipv6_l4() 343{ 344 log_info "Running IPv6 L4 hash multipath tests" 345 multipath6_l4_test "ECMP" 1 1 346 multipath6_l4_test "Weighted MP 2:1" 2 1 347 multipath6_l4_test "Weighted MP 11:45" 11 45 348} 349 350trap cleanup EXIT 351 352setup_prepare 353setup_wait 354tests_run 355 356exit $EXIT_STATUS