| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| ALL_TESTS=" |
| ping_ipv4 |
| ping_ipv6 |
| multipath_test |
| " |
| NUM_NETIFS=8 |
| source lib.sh |
| |
| h1_create() |
| { |
| vrf_create "vrf-h1" |
| ip link set dev $h1 master vrf-h1 |
| |
| ip link set dev vrf-h1 up |
| ip link set dev $h1 up |
| |
| ip address add 192.0.2.2/24 dev $h1 |
| ip address add 2001:db8:1::2/64 dev $h1 |
| |
| ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1 |
| ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1 |
| } |
| |
| h1_destroy() |
| { |
| ip route del 2001:db8:2::/64 vrf vrf-h1 |
| ip route del 198.51.100.0/24 vrf vrf-h1 |
| |
| ip address del 2001:db8:1::2/64 dev $h1 |
| ip address del 192.0.2.2/24 dev $h1 |
| |
| ip link set dev $h1 down |
| vrf_destroy "vrf-h1" |
| } |
| |
| h2_create() |
| { |
| vrf_create "vrf-h2" |
| ip link set dev $h2 master vrf-h2 |
| |
| ip link set dev vrf-h2 up |
| ip link set dev $h2 up |
| |
| ip address add 198.51.100.2/24 dev $h2 |
| ip address add 2001:db8:2::2/64 dev $h2 |
| |
| ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1 |
| ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1 |
| } |
| |
| h2_destroy() |
| { |
| ip route del 2001:db8:1::/64 vrf vrf-h2 |
| ip route del 192.0.2.0/24 vrf vrf-h2 |
| |
| ip address del 2001:db8:2::2/64 dev $h2 |
| ip address del 198.51.100.2/24 dev $h2 |
| |
| ip link set dev $h2 down |
| vrf_destroy "vrf-h2" |
| } |
| |
| router1_create() |
| { |
| vrf_create "vrf-r1" |
| ip link set dev $rp11 master vrf-r1 |
| ip link set dev $rp12 master vrf-r1 |
| ip link set dev $rp13 master vrf-r1 |
| |
| ip link set dev vrf-r1 up |
| ip link set dev $rp11 up |
| ip link set dev $rp12 up |
| ip link set dev $rp13 up |
| |
| ip address add 192.0.2.1/24 dev $rp11 |
| ip address add 2001:db8:1::1/64 dev $rp11 |
| |
| ip address add 169.254.2.12/24 dev $rp12 |
| ip address add fe80:2::12/64 dev $rp12 |
| |
| ip address add 169.254.3.13/24 dev $rp13 |
| ip address add fe80:3::13/64 dev $rp13 |
| } |
| |
| router1_destroy() |
| { |
| ip route del 2001:db8:2::/64 vrf vrf-r1 |
| ip route del 198.51.100.0/24 vrf vrf-r1 |
| |
| ip address del fe80:3::13/64 dev $rp13 |
| ip address del 169.254.3.13/24 dev $rp13 |
| |
| ip address del fe80:2::12/64 dev $rp12 |
| ip address del 169.254.2.12/24 dev $rp12 |
| |
| ip address del 2001:db8:1::1/64 dev $rp11 |
| ip address del 192.0.2.1/24 dev $rp11 |
| |
| ip nexthop del id 103 |
| ip nexthop del id 101 |
| ip nexthop del id 102 |
| ip nexthop del id 106 |
| ip nexthop del id 104 |
| ip nexthop del id 105 |
| |
| ip link set dev $rp13 down |
| ip link set dev $rp12 down |
| ip link set dev $rp11 down |
| |
| vrf_destroy "vrf-r1" |
| } |
| |
| router2_create() |
| { |
| vrf_create "vrf-r2" |
| ip link set dev $rp21 master vrf-r2 |
| ip link set dev $rp22 master vrf-r2 |
| ip link set dev $rp23 master vrf-r2 |
| |
| ip link set dev vrf-r2 up |
| ip link set dev $rp21 up |
| ip link set dev $rp22 up |
| ip link set dev $rp23 up |
| |
| ip address add 198.51.100.1/24 dev $rp21 |
| ip address add 2001:db8:2::1/64 dev $rp21 |
| |
| ip address add 169.254.2.22/24 dev $rp22 |
| ip address add fe80:2::22/64 dev $rp22 |
| |
| ip address add 169.254.3.23/24 dev $rp23 |
| ip address add fe80:3::23/64 dev $rp23 |
| } |
| |
| router2_destroy() |
| { |
| ip route del 2001:db8:1::/64 vrf vrf-r2 |
| ip route del 192.0.2.0/24 vrf vrf-r2 |
| |
| ip address del fe80:3::23/64 dev $rp23 |
| ip address del 169.254.3.23/24 dev $rp23 |
| |
| ip address del fe80:2::22/64 dev $rp22 |
| ip address del 169.254.2.22/24 dev $rp22 |
| |
| ip address del 2001:db8:2::1/64 dev $rp21 |
| ip address del 198.51.100.1/24 dev $rp21 |
| |
| ip nexthop del id 201 |
| ip nexthop del id 202 |
| ip nexthop del id 204 |
| ip nexthop del id 205 |
| |
| ip link set dev $rp23 down |
| ip link set dev $rp22 down |
| ip link set dev $rp21 down |
| |
| vrf_destroy "vrf-r2" |
| } |
| |
| routing_nh_obj() |
| { |
| ip nexthop add id 101 via 169.254.2.22 dev $rp12 |
| ip nexthop add id 102 via 169.254.3.23 dev $rp13 |
| ip nexthop add id 103 group 101/102 type resilient buckets 512 \ |
| idle_timer 0 |
| ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103 |
| |
| ip nexthop add id 104 via fe80:2::22 dev $rp12 |
| ip nexthop add id 105 via fe80:3::23 dev $rp13 |
| ip nexthop add id 106 group 104/105 type resilient buckets 512 \ |
| idle_timer 0 |
| ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106 |
| |
| ip nexthop add id 201 via 169.254.2.12 dev $rp22 |
| ip nexthop add id 202 via 169.254.3.13 dev $rp23 |
| ip nexthop add id 203 group 201/202 type resilient buckets 512 \ |
| idle_timer 0 |
| ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203 |
| |
| ip nexthop add id 204 via fe80:2::12 dev $rp22 |
| ip nexthop add id 205 via fe80:3::13 dev $rp23 |
| ip nexthop add id 206 group 204/205 type resilient buckets 512 \ |
| idle_timer 0 |
| ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206 |
| } |
| |
| multipath4_test() |
| { |
| local desc="$1" |
| local weight_rp12=$2 |
| local weight_rp13=$3 |
| local t0_rp12 t0_rp13 t1_rp12 t1_rp13 |
| local packets_rp12 packets_rp13 |
| |
| # Transmit multiple flows from h1 to h2 and make sure they are |
| # distributed between both multipath links (rp12 and rp13) |
| # according to the provided weights. |
| sysctl_set net.ipv4.fib_multipath_hash_policy 1 |
| |
| t0_rp12=$(link_stats_tx_packets_get $rp12) |
| t0_rp13=$(link_stats_tx_packets_get $rp13) |
| |
| ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \ |
| -d 1msec -t udp "sp=1024,dp=0-32768" |
| |
| t1_rp12=$(link_stats_tx_packets_get $rp12) |
| t1_rp13=$(link_stats_tx_packets_get $rp13) |
| |
| let "packets_rp12 = $t1_rp12 - $t0_rp12" |
| let "packets_rp13 = $t1_rp13 - $t0_rp13" |
| multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 |
| |
| # Restore settings. |
| sysctl_restore net.ipv4.fib_multipath_hash_policy |
| } |
| |
| multipath6_l4_test() |
| { |
| local desc="$1" |
| local weight_rp12=$2 |
| local weight_rp13=$3 |
| local t0_rp12 t0_rp13 t1_rp12 t1_rp13 |
| local packets_rp12 packets_rp13 |
| |
| # Transmit multiple flows from h1 to h2 and make sure they are |
| # distributed between both multipath links (rp12 and rp13) |
| # according to the provided weights. |
| sysctl_set net.ipv6.fib_multipath_hash_policy 1 |
| |
| t0_rp12=$(link_stats_tx_packets_get $rp12) |
| t0_rp13=$(link_stats_tx_packets_get $rp13) |
| |
| $MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \ |
| -d 1msec -t udp "sp=1024,dp=0-32768" |
| |
| t1_rp12=$(link_stats_tx_packets_get $rp12) |
| t1_rp13=$(link_stats_tx_packets_get $rp13) |
| |
| let "packets_rp12 = $t1_rp12 - $t0_rp12" |
| let "packets_rp13 = $t1_rp13 - $t0_rp13" |
| multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13 |
| |
| sysctl_restore net.ipv6.fib_multipath_hash_policy |
| } |
| |
| multipath_test() |
| { |
| # Without an idle timer, weight replacement should happen immediately. |
| log_info "Running multipath tests without an idle timer" |
| ip nexthop replace id 103 group 101/102 type resilient idle_timer 0 |
| ip nexthop replace id 106 group 104/105 type resilient idle_timer 0 |
| |
| log_info "Running IPv4 multipath tests" |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| multipath4_test "ECMP" 1 1 |
| ip nexthop replace id 103 group 101,2/102,1 type resilient |
| multipath4_test "Weighted MP 2:1" 2 1 |
| ip nexthop replace id 103 group 101,11/102,45 type resilient |
| multipath4_test "Weighted MP 11:45" 11 45 |
| |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| |
| log_info "Running IPv6 L4 hash multipath tests" |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| multipath6_l4_test "ECMP" 1 1 |
| ip nexthop replace id 106 group 104,2/105,1 type resilient |
| multipath6_l4_test "Weighted MP 2:1" 2 1 |
| ip nexthop replace id 106 group 104,11/105,45 type resilient |
| multipath6_l4_test "Weighted MP 11:45" 11 45 |
| |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| |
| # With an idle timer, weight replacement should not happen, so the |
| # expected ratio should always be the initial one (1:1). |
| log_info "Running multipath tests with an idle timer of 120 seconds" |
| ip nexthop replace id 103 group 101/102 type resilient idle_timer 120 |
| ip nexthop replace id 106 group 104/105 type resilient idle_timer 120 |
| |
| log_info "Running IPv4 multipath tests" |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| multipath4_test "ECMP" 1 1 |
| ip nexthop replace id 103 group 101,2/102,1 type resilient |
| multipath4_test "Weighted MP 2:1" 1 1 |
| ip nexthop replace id 103 group 101,11/102,45 type resilient |
| multipath4_test "Weighted MP 11:45" 1 1 |
| |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| |
| log_info "Running IPv6 L4 hash multipath tests" |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| multipath6_l4_test "ECMP" 1 1 |
| ip nexthop replace id 106 group 104,2/105,1 type resilient |
| multipath6_l4_test "Weighted MP 2:1" 1 1 |
| ip nexthop replace id 106 group 104,11/105,45 type resilient |
| multipath6_l4_test "Weighted MP 11:45" 1 1 |
| |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| |
| # With a short idle timer and enough idle time, weight replacement |
| # should happen. |
| log_info "Running multipath tests with an idle timer of 5 seconds" |
| ip nexthop replace id 103 group 101/102 type resilient idle_timer 5 |
| ip nexthop replace id 106 group 104/105 type resilient idle_timer 5 |
| |
| log_info "Running IPv4 multipath tests" |
| sleep 10 |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| multipath4_test "ECMP" 1 1 |
| sleep 10 |
| ip nexthop replace id 103 group 101,2/102,1 type resilient |
| multipath4_test "Weighted MP 2:1" 2 1 |
| sleep 10 |
| ip nexthop replace id 103 group 101,11/102,45 type resilient |
| multipath4_test "Weighted MP 11:45" 11 45 |
| |
| ip nexthop replace id 103 group 101,1/102,1 type resilient |
| |
| log_info "Running IPv6 L4 hash multipath tests" |
| sleep 10 |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| multipath6_l4_test "ECMP" 1 1 |
| sleep 10 |
| ip nexthop replace id 106 group 104,2/105,1 type resilient |
| multipath6_l4_test "Weighted MP 2:1" 2 1 |
| sleep 10 |
| ip nexthop replace id 106 group 104,11/105,45 type resilient |
| multipath6_l4_test "Weighted MP 11:45" 11 45 |
| |
| ip nexthop replace id 106 group 104,1/105,1 type resilient |
| } |
| |
| setup_prepare() |
| { |
| h1=${NETIFS[p1]} |
| rp11=${NETIFS[p2]} |
| |
| rp12=${NETIFS[p3]} |
| rp22=${NETIFS[p4]} |
| |
| rp13=${NETIFS[p5]} |
| rp23=${NETIFS[p6]} |
| |
| rp21=${NETIFS[p7]} |
| h2=${NETIFS[p8]} |
| |
| vrf_prepare |
| |
| h1_create |
| h2_create |
| |
| router1_create |
| router2_create |
| |
| forwarding_enable |
| } |
| |
| cleanup() |
| { |
| pre_cleanup |
| |
| forwarding_restore |
| |
| router2_destroy |
| router1_destroy |
| |
| h2_destroy |
| h1_destroy |
| |
| vrf_cleanup |
| } |
| |
| ping_ipv4() |
| { |
| ping_test $h1 198.51.100.2 |
| } |
| |
| ping_ipv6() |
| { |
| ping6_test $h1 2001:db8:2::2 |
| } |
| |
| ip nexthop ls >/dev/null 2>&1 |
| if [ $? -ne 0 ]; then |
| echo "Nexthop objects not supported; skipping tests" |
| exit $ksft_skip |
| fi |
| |
| trap cleanup EXIT |
| |
| setup_prepare |
| setup_wait |
| routing_nh_obj |
| |
| tests_run |
| |
| exit $EXIT_STATUS |
