| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| # Test traffic distribution when a wECMP route forwards traffic to two GRE |
| # tunnels. |
| # |
| # +-------------------------+ |
| # | H1 | |
| # | $h1 + | |
| # | 192.0.2.1/28 | | |
| # | 2001:db8:1::1/64 | | |
| # +-------------------|-----+ |
| # | |
| # +-------------------|------------------------+ |
| # | SW1 | | |
| # | $ol1 + | |
| # | 192.0.2.2/28 | |
| # | 2001:db8:1::2/64 | |
| # | | |
| # | + g1a (gre) + g1b (gre) | |
| # | loc=192.0.2.65 loc=192.0.2.81 | |
| # | rem=192.0.2.66 --. rem=192.0.2.82 --. | |
| # | tos=inherit | tos=inherit | | |
| # | .------------------' | | |
| # | | .------------------' | |
| # | v v | |
| # | + $ul1.111 (vlan) + $ul1.222 (vlan) | |
| # | | 192.0.2.129/28 | 192.0.2.145/28 | |
| # | \ / | |
| # | \________________/ | |
| # | | | |
| # | + $ul1 | |
| # +------------|-------------------------------+ |
| # | |
| # +------------|-------------------------------+ |
| # | SW2 + $ul2 | |
| # | _______|________ | |
| # | / \ | |
| # | / \ | |
| # | + $ul2.111 (vlan) + $ul2.222 (vlan) | |
| # | ^ 192.0.2.130/28 ^ 192.0.2.146/28 | |
| # | | | | |
| # | | '------------------. | |
| # | '------------------. | | |
| # | + g2a (gre) | + g2b (gre) | | |
| # | loc=192.0.2.66 | loc=192.0.2.82 | | |
| # | rem=192.0.2.65 --' rem=192.0.2.81 --' | |
| # | tos=inherit tos=inherit | |
| # | | |
| # | $ol2 + | |
| # | 192.0.2.17/28 | | |
| # | 2001:db8:2::1/64 | | |
| # +-------------------|------------------------+ |
| # | |
| # +-------------------|-----+ |
| # | H2 | | |
| # | $h2 + | |
| # | 192.0.2.18/28 | |
| # | 2001:db8:2::2/64 | |
| # +-------------------------+ |
| |
| ALL_TESTS=" |
| ping_ipv4 |
| ping_ipv6 |
| multipath_ipv4 |
| multipath_ipv6 |
| multipath_ipv6_l4 |
| " |
| |
| NUM_NETIFS=6 |
| source lib.sh |
| |
| h1_create() |
| { |
| simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 |
| ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
| ip route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 |
| } |
| |
| h1_destroy() |
| { |
| ip route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 |
| ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 |
| simple_if_fini $h1 192.0.2.1/28 |
| } |
| |
| sw1_create() |
| { |
| simple_if_init $ol1 192.0.2.2/28 2001:db8:1::2/64 |
| __simple_if_init $ul1 v$ol1 |
| vlan_create $ul1 111 v$ol1 192.0.2.129/28 |
| vlan_create $ul1 222 v$ol1 192.0.2.145/28 |
| |
| tunnel_create g1a gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1 |
| __simple_if_init g1a v$ol1 192.0.2.65/32 |
| ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130 |
| |
| tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$ol1 |
| __simple_if_init g1b v$ol1 192.0.2.81/32 |
| ip route add vrf v$ol1 192.0.2.82/32 via 192.0.2.146 |
| |
| ip -6 nexthop add id 101 dev g1a |
| ip -6 nexthop add id 102 dev g1b |
| ip nexthop add id 103 group 101/102 type resilient buckets 512 \ |
| idle_timer 0 |
| |
| ip route add vrf v$ol1 192.0.2.16/28 nhid 103 |
| ip route add vrf v$ol1 2001:db8:2::/64 nhid 103 |
| } |
| |
| sw1_destroy() |
| { |
| ip route del vrf v$ol1 2001:db8:2::/64 |
| ip route del vrf v$ol1 192.0.2.16/28 |
| |
| ip nexthop del id 103 |
| ip -6 nexthop del id 102 |
| ip -6 nexthop del id 101 |
| |
| ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 |
| __simple_if_fini g1b 192.0.2.81/32 |
| tunnel_destroy g1b |
| |
| ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 |
| __simple_if_fini g1a 192.0.2.65/32 |
| tunnel_destroy g1a |
| |
| vlan_destroy $ul1 222 |
| vlan_destroy $ul1 111 |
| __simple_if_fini $ul1 |
| simple_if_fini $ol1 192.0.2.2/28 2001:db8:1::2/64 |
| } |
| |
| sw2_create() |
| { |
| simple_if_init $ol2 192.0.2.17/28 2001:db8:2::1/64 |
| __simple_if_init $ul2 v$ol2 |
| vlan_create $ul2 111 v$ol2 192.0.2.130/28 |
| vlan_create $ul2 222 v$ol2 192.0.2.146/28 |
| |
| tunnel_create g2a gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 |
| __simple_if_init g2a v$ol2 192.0.2.66/32 |
| ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
| |
| tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$ol2 |
| __simple_if_init g2b v$ol2 192.0.2.82/32 |
| ip route add vrf v$ol2 192.0.2.81/32 via 192.0.2.145 |
| |
| ip -6 nexthop add id 201 dev g2a |
| ip -6 nexthop add id 202 dev g2b |
| ip nexthop add id 203 group 201/202 type resilient buckets 512 \ |
| idle_timer 0 |
| |
| ip route add vrf v$ol2 192.0.2.0/28 nhid 203 |
| ip route add vrf v$ol2 2001:db8:1::/64 nhid 203 |
| |
| tc qdisc add dev $ul2 clsact |
| tc filter add dev $ul2 ingress pref 111 prot 802.1Q \ |
| flower vlan_id 111 action pass |
| tc filter add dev $ul2 ingress pref 222 prot 802.1Q \ |
| flower vlan_id 222 action pass |
| } |
| |
| sw2_destroy() |
| { |
| tc qdisc del dev $ul2 clsact |
| |
| ip route del vrf v$ol2 2001:db8:1::/64 |
| ip route del vrf v$ol2 192.0.2.0/28 |
| |
| ip nexthop del id 203 |
| ip -6 nexthop del id 202 |
| ip -6 nexthop del id 201 |
| |
| ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 |
| __simple_if_fini g2b 192.0.2.82/32 |
| tunnel_destroy g2b |
| |
| ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 |
| __simple_if_fini g2a 192.0.2.66/32 |
| tunnel_destroy g2a |
| |
| vlan_destroy $ul2 222 |
| vlan_destroy $ul2 111 |
| __simple_if_fini $ul2 |
| simple_if_fini $ol2 192.0.2.17/28 2001:db8:2::1/64 |
| } |
| |
| h2_create() |
| { |
| simple_if_init $h2 192.0.2.18/28 2001:db8:2::2/64 |
| ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
| ip route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 |
| } |
| |
| h2_destroy() |
| { |
| ip route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1 |
| ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 |
| simple_if_fini $h2 192.0.2.18/28 2001:db8:2::2/64 |
| } |
| |
| setup_prepare() |
| { |
| h1=${NETIFS[p1]} |
| ol1=${NETIFS[p2]} |
| |
| ul1=${NETIFS[p3]} |
| ul2=${NETIFS[p4]} |
| |
| ol2=${NETIFS[p5]} |
| h2=${NETIFS[p6]} |
| |
| vrf_prepare |
| h1_create |
| sw1_create |
| sw2_create |
| h2_create |
| |
| forwarding_enable |
| } |
| |
| cleanup() |
| { |
| pre_cleanup |
| |
| forwarding_restore |
| |
| h2_destroy |
| sw2_destroy |
| sw1_destroy |
| h1_destroy |
| vrf_cleanup |
| } |
| |
| multipath4_test() |
| { |
| local what=$1; shift |
| local weight1=$1; shift |
| local weight2=$1; shift |
| |
| sysctl_set net.ipv4.fib_multipath_hash_policy 1 |
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ |
| type resilient |
| |
| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| ip vrf exec v$h1 \ |
| $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ |
| -d 1msec -t udp "sp=1024,dp=0-32768" |
| |
| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| local d111=$((t1_111 - t0_111)) |
| local d222=$((t1_222 - t0_222)) |
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 |
| |
| ip nexthop replace id 103 group 101/102 type resilient |
| sysctl_restore net.ipv4.fib_multipath_hash_policy |
| } |
| |
| multipath6_test() |
| { |
| local what=$1; shift |
| local weight1=$1; shift |
| local weight2=$1; shift |
| |
| sysctl_set net.ipv6.fib_multipath_hash_policy 0 |
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ |
| type resilient |
| |
| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| # Generate 16384 echo requests, each with a random flow label. |
| for ((i=0; i < 16384; ++i)); do |
| ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null |
| done |
| |
| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| local d111=$((t1_111 - t0_111)) |
| local d222=$((t1_222 - t0_222)) |
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 |
| |
| ip nexthop replace id 103 group 101/102 type resilient |
| sysctl_restore net.ipv6.fib_multipath_hash_policy |
| } |
| |
| multipath6_l4_test() |
| { |
| local what=$1; shift |
| local weight1=$1; shift |
| local weight2=$1; shift |
| |
| sysctl_set net.ipv6.fib_multipath_hash_policy 1 |
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ |
| type resilient |
| |
| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| ip vrf exec v$h1 \ |
| $MZ $h1 -6 -q -p 64 -A 2001:db8:1::1 -B 2001:db8:2::2 \ |
| -d 1msec -t udp "sp=1024,dp=0-32768" |
| |
| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) |
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) |
| |
| local d111=$((t1_111 - t0_111)) |
| local d222=$((t1_222 - t0_222)) |
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 |
| |
| ip nexthop replace id 103 group 101/102 type resilient |
| sysctl_restore net.ipv6.fib_multipath_hash_policy |
| } |
| |
| ping_ipv4() |
| { |
| ping_test $h1 192.0.2.18 |
| } |
| |
| ping_ipv6() |
| { |
| ping6_test $h1 2001:db8:2::2 |
| } |
| |
| multipath_ipv4() |
| { |
| log_info "Running IPv4 multipath tests" |
| multipath4_test "ECMP" 1 1 |
| multipath4_test "Weighted MP 2:1" 2 1 |
| multipath4_test "Weighted MP 11:45" 11 45 |
| } |
| |
| multipath_ipv6() |
| { |
| log_info "Running IPv6 multipath tests" |
| multipath6_test "ECMP" 1 1 |
| multipath6_test "Weighted MP 2:1" 2 1 |
| multipath6_test "Weighted MP 11:45" 11 45 |
| } |
| |
| multipath_ipv6_l4() |
| { |
| log_info "Running IPv6 L4 hash multipath tests" |
| multipath6_l4_test "ECMP" 1 1 |
| multipath6_l4_test "Weighted MP 2:1" 2 1 |
| multipath6_l4_test "Weighted MP 11:45" 11 45 |
| } |
| |
| trap cleanup EXIT |
| |
| setup_prepare |
| setup_wait |
| tests_run |
| |
| exit $EXIT_STATUS |
