#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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ALL_TESTS="ping_ipv4 ping_ipv6 multipath_test"
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NUM_NETIFS=8
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source lib.sh
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h1_create()
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{
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vrf_create "vrf-h1"
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ip link set dev $h1 master vrf-h1
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ip link set dev vrf-h1 up
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ip link set dev $h1 up
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ip address add 192.0.2.2/24 dev $h1
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ip address add 2001:db8:1::2/64 dev $h1
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ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
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ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
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}
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h1_destroy()
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{
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ip route del 2001:db8:2::/64 vrf vrf-h1
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ip route del 198.51.100.0/24 vrf vrf-h1
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ip address del 2001:db8:1::2/64 dev $h1
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ip address del 192.0.2.2/24 dev $h1
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ip link set dev $h1 down
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vrf_destroy "vrf-h1"
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}
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h2_create()
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{
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vrf_create "vrf-h2"
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ip link set dev $h2 master vrf-h2
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ip link set dev vrf-h2 up
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ip link set dev $h2 up
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ip address add 198.51.100.2/24 dev $h2
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ip address add 2001:db8:2::2/64 dev $h2
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ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
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ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
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}
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h2_destroy()
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{
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ip route del 2001:db8:1::/64 vrf vrf-h2
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ip route del 192.0.2.0/24 vrf vrf-h2
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ip address del 2001:db8:2::2/64 dev $h2
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ip address del 198.51.100.2/24 dev $h2
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ip link set dev $h2 down
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vrf_destroy "vrf-h2"
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}
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router1_create()
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{
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vrf_create "vrf-r1"
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ip link set dev $rp11 master vrf-r1
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ip link set dev $rp12 master vrf-r1
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ip link set dev $rp13 master vrf-r1
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ip link set dev vrf-r1 up
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ip link set dev $rp11 up
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ip link set dev $rp12 up
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ip link set dev $rp13 up
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ip address add 192.0.2.1/24 dev $rp11
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ip address add 2001:db8:1::1/64 dev $rp11
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ip address add 169.254.2.12/24 dev $rp12
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ip address add fe80:2::12/64 dev $rp12
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ip address add 169.254.3.13/24 dev $rp13
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ip address add fe80:3::13/64 dev $rp13
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}
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router1_destroy()
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{
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ip route del 2001:db8:2::/64 vrf vrf-r1
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ip route del 198.51.100.0/24 vrf vrf-r1
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ip address del fe80:3::13/64 dev $rp13
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ip address del 169.254.3.13/24 dev $rp13
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ip address del fe80:2::12/64 dev $rp12
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ip address del 169.254.2.12/24 dev $rp12
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ip address del 2001:db8:1::1/64 dev $rp11
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ip address del 192.0.2.1/24 dev $rp11
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ip nexthop del id 103
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ip nexthop del id 101
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ip nexthop del id 102
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ip nexthop del id 106
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ip nexthop del id 104
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ip nexthop del id 105
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ip link set dev $rp13 down
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ip link set dev $rp12 down
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ip link set dev $rp11 down
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vrf_destroy "vrf-r1"
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}
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router2_create()
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{
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vrf_create "vrf-r2"
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ip link set dev $rp21 master vrf-r2
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ip link set dev $rp22 master vrf-r2
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ip link set dev $rp23 master vrf-r2
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ip link set dev vrf-r2 up
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ip link set dev $rp21 up
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ip link set dev $rp22 up
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ip link set dev $rp23 up
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ip address add 198.51.100.1/24 dev $rp21
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ip address add 2001:db8:2::1/64 dev $rp21
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ip address add 169.254.2.22/24 dev $rp22
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ip address add fe80:2::22/64 dev $rp22
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ip address add 169.254.3.23/24 dev $rp23
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ip address add fe80:3::23/64 dev $rp23
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}
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router2_destroy()
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{
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ip route del 2001:db8:1::/64 vrf vrf-r2
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ip route del 192.0.2.0/24 vrf vrf-r2
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ip address del fe80:3::23/64 dev $rp23
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ip address del 169.254.3.23/24 dev $rp23
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ip address del fe80:2::22/64 dev $rp22
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ip address del 169.254.2.22/24 dev $rp22
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ip address del 2001:db8:2::1/64 dev $rp21
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ip address del 198.51.100.1/24 dev $rp21
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ip nexthop del id 201
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ip nexthop del id 202
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ip nexthop del id 204
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ip nexthop del id 205
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ip link set dev $rp23 down
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ip link set dev $rp22 down
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ip link set dev $rp21 down
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vrf_destroy "vrf-r2"
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}
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routing_nh_obj()
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{
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ip nexthop add id 101 via 169.254.2.22 dev $rp12
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ip nexthop add id 102 via 169.254.3.23 dev $rp13
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ip nexthop add id 103 group 101/102
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ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103
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ip nexthop add id 104 via fe80:2::22 dev $rp12
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ip nexthop add id 105 via fe80:3::23 dev $rp13
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ip nexthop add id 106 group 104/105
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ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106
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ip nexthop add id 201 via 169.254.2.12 dev $rp22
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ip nexthop add id 202 via 169.254.3.13 dev $rp23
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ip nexthop add id 203 group 201/202
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ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203
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ip nexthop add id 204 via fe80:2::12 dev $rp22
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ip nexthop add id 205 via fe80:3::13 dev $rp23
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ip nexthop add id 206 group 204/205
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ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206
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}
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multipath4_test()
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{
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local desc="$1"
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local weight_rp12=$2
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local weight_rp13=$3
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local t0_rp12 t0_rp13 t1_rp12 t1_rp13
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local packets_rp12 packets_rp13
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# Transmit multiple flows from h1 to h2 and make sure they are
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# distributed between both multipath links (rp12 and rp13)
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# according to the configured weights.
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sysctl_set net.ipv4.fib_multipath_hash_policy 1
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ip nexthop replace id 103 group 101,$weight_rp12/102,$weight_rp13
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t0_rp12=$(link_stats_tx_packets_get $rp12)
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t0_rp13=$(link_stats_tx_packets_get $rp13)
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ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
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-d 1msec -t udp "sp=1024,dp=0-32768"
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t1_rp12=$(link_stats_tx_packets_get $rp12)
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t1_rp13=$(link_stats_tx_packets_get $rp13)
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let "packets_rp12 = $t1_rp12 - $t0_rp12"
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let "packets_rp13 = $t1_rp13 - $t0_rp13"
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multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
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# Restore settings.
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ip nexthop replace id 103 group 101/102
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sysctl_restore net.ipv4.fib_multipath_hash_policy
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}
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multipath6_l4_test()
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{
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local desc="$1"
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local weight_rp12=$2
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local weight_rp13=$3
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local t0_rp12 t0_rp13 t1_rp12 t1_rp13
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local packets_rp12 packets_rp13
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# Transmit multiple flows from h1 to h2 and make sure they are
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# distributed between both multipath links (rp12 and rp13)
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# according to the configured weights.
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sysctl_set net.ipv6.fib_multipath_hash_policy 1
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ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13
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t0_rp12=$(link_stats_tx_packets_get $rp12)
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t0_rp13=$(link_stats_tx_packets_get $rp13)
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$MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
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-d 1msec -t udp "sp=1024,dp=0-32768"
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t1_rp12=$(link_stats_tx_packets_get $rp12)
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t1_rp13=$(link_stats_tx_packets_get $rp13)
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let "packets_rp12 = $t1_rp12 - $t0_rp12"
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let "packets_rp13 = $t1_rp13 - $t0_rp13"
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multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
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ip nexthop replace id 106 group 104/105
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sysctl_restore net.ipv6.fib_multipath_hash_policy
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}
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multipath6_test()
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{
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local desc="$1"
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local weight_rp12=$2
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local weight_rp13=$3
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local t0_rp12 t0_rp13 t1_rp12 t1_rp13
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local packets_rp12 packets_rp13
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ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13
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t0_rp12=$(link_stats_tx_packets_get $rp12)
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t0_rp13=$(link_stats_tx_packets_get $rp13)
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# Generate 16384 echo requests, each with a random flow label.
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for _ in $(seq 1 16384); do
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ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1
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done
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t1_rp12=$(link_stats_tx_packets_get $rp12)
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t1_rp13=$(link_stats_tx_packets_get $rp13)
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let "packets_rp12 = $t1_rp12 - $t0_rp12"
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let "packets_rp13 = $t1_rp13 - $t0_rp13"
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multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
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ip nexthop replace id 106 group 104/105
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}
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multipath_test()
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{
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log_info "Running IPv4 multipath tests"
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multipath4_test "ECMP" 1 1
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multipath4_test "Weighted MP 2:1" 2 1
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multipath4_test "Weighted MP 11:45" 11 45
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log_info "Running IPv6 multipath tests"
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multipath6_test "ECMP" 1 1
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multipath6_test "Weighted MP 2:1" 2 1
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multipath6_test "Weighted MP 11:45" 11 45
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log_info "Running IPv6 L4 hash multipath tests"
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multipath6_l4_test "ECMP" 1 1
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multipath6_l4_test "Weighted MP 2:1" 2 1
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multipath6_l4_test "Weighted MP 11:45" 11 45
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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rp11=${NETIFS[p2]}
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rp12=${NETIFS[p3]}
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rp22=${NETIFS[p4]}
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rp13=${NETIFS[p5]}
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rp23=${NETIFS[p6]}
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rp21=${NETIFS[p7]}
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h2=${NETIFS[p8]}
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vrf_prepare
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h1_create
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h2_create
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router1_create
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router2_create
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routing_nh_obj
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forwarding_enable
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}
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cleanup()
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{
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pre_cleanup
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forwarding_restore
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router2_destroy
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router1_destroy
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h2_destroy
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h1_destroy
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vrf_cleanup
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}
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ping_ipv4()
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{
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ping_test $h1 198.51.100.2
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}
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ping_ipv6()
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{
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ping6_test $h1 2001:db8:2::2
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}
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ip nexthop ls >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "Nexthop objects not supported; skipping tests"
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exit 0
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fi
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trap cleanup EXIT
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setup_prepare
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setup_wait
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routing_nh_obj
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tests_run
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exit $EXIT_STATUS
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