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selftests: forwarding: Add resilient multipath tunneling nexthop test
Add a resilient nexthop objects version of gre_multipath_nh.sh. Test that both IPv4 and IPv6 overlays work with resilient nexthop groups where the nexthops are two GRE tunnels. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh
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| #!/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 | ||
|
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||
| 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$ol1 192.0.2.66/32 via 192.0.2.130 | ||
|
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||
| tunnel_create g1b gre 192.0.2.81 192.0.2.82 tos inherit dev v$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 | ||
|
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||
| 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 | ||
|
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||
| 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 | ||
| } | ||
|
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||
| sw1_destroy() | ||
| { | ||
| ip route del vrf v$ol1 2001:db8:2::/64 | ||
| ip route del vrf v$ol1 192.0.2.16/28 | ||
|
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||
| ip nexthop del id 103 | ||
| ip -6 nexthop del id 102 | ||
| ip -6 nexthop del id 101 | ||
|
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||
| ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146 | ||
| __simple_if_fini g1b 192.0.2.81/32 | ||
| tunnel_destroy g1b | ||
|
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||
| ip route del vrf v$ol1 192.0.2.66/32 via 192.0.2.130 | ||
| __simple_if_fini g1a 192.0.2.65/32 | ||
| tunnel_destroy g1a | ||
|
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||
| 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 | ||
| } | ||
|
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||
| 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 | ||
|
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||
| 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$ol2 192.0.2.65/32 via 192.0.2.129 | ||
|
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||
| tunnel_create g2b gre 192.0.2.82 192.0.2.81 tos inherit dev v$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 | ||
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||
| 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 | ||
|
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||
| 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 | ||
|
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| 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 | ||
| } | ||
|
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||
| sw2_destroy() | ||
| { | ||
| tc qdisc del dev $ul2 clsact | ||
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||
| ip route del vrf v$ol2 2001:db8:1::/64 | ||
| ip route del vrf v$ol2 192.0.2.0/28 | ||
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||
| ip nexthop del id 203 | ||
| ip -6 nexthop del id 202 | ||
| ip -6 nexthop del id 201 | ||
|
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||
| ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145 | ||
| __simple_if_fini g2b 192.0.2.82/32 | ||
| tunnel_destroy g2b | ||
|
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||
| 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 | ||
|
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||
| 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 | ||
| } | ||
|
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||
| 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$h2 2001:db8:1::/64 via 2001:db8:2::1 | ||
| } | ||
|
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||
| h2_destroy() | ||
| { | ||
| ip route del vrf v$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 $h2 192.0.2.18/28 2001:db8:2::2/64 | ||
| } | ||
|
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||
| setup_prepare() | ||
| { | ||
| h1=${NETIFS[p1]} | ||
| ol1=${NETIFS[p2]} | ||
|
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||
| ul1=${NETIFS[p3]} | ||
| ul2=${NETIFS[p4]} | ||
|
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| ol2=${NETIFS[p5]} | ||
| h2=${NETIFS[p6]} | ||
|
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| vrf_prepare | ||
| h1_create | ||
| sw1_create | ||
| sw2_create | ||
| h2_create | ||
|
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||
| forwarding_enable | ||
| } | ||
|
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||
| cleanup() | ||
| { | ||
| pre_cleanup | ||
|
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| forwarding_restore | ||
|
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| h2_destroy | ||
| sw2_destroy | ||
| sw1_destroy | ||
| h1_destroy | ||
| vrf_cleanup | ||
| } | ||
|
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||
| multipath4_test() | ||
| { | ||
| local what=$1; shift | ||
| local weight1=$1; shift | ||
| local weight2=$1; shift | ||
|
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||
| sysctl_set net.ipv4.fib_multipath_hash_policy 1 | ||
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ | ||
| type resilient | ||
|
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||
| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
|
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| ip vrf exec v$h1 \ | ||
| $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \ | ||
| -d 1msec -t udp "sp=1024,dp=0-32768" | ||
|
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| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
|
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| local d111=$((t1_111 - t0_111)) | ||
| local d222=$((t1_222 - t0_222)) | ||
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 | ||
|
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| ip nexthop replace id 103 group 101/102 type resilient | ||
| sysctl_restore net.ipv4.fib_multipath_hash_policy | ||
| } | ||
|
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||
| multipath6_test() | ||
| { | ||
| local what=$1; shift | ||
| local weight1=$1; shift | ||
| local weight2=$1; shift | ||
|
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| sysctl_set net.ipv6.fib_multipath_hash_policy 0 | ||
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ | ||
| type resilient | ||
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| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
|
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| # Generate 16384 echo requests, each with a random flow label. | ||
| for ((i=0; i < 16384; ++i)); do | ||
| ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null | ||
| done | ||
|
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| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
|
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| local d111=$((t1_111 - t0_111)) | ||
| local d222=$((t1_222 - t0_222)) | ||
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 | ||
|
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| ip nexthop replace id 103 group 101/102 type resilient | ||
| sysctl_restore net.ipv6.fib_multipath_hash_policy | ||
| } | ||
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| multipath6_l4_test() | ||
| { | ||
| local what=$1; shift | ||
| local weight1=$1; shift | ||
| local weight2=$1; shift | ||
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| sysctl_set net.ipv6.fib_multipath_hash_policy 1 | ||
| ip nexthop replace id 103 group 101,$weight1/102,$weight2 \ | ||
| type resilient | ||
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| local t0_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t0_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
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| ip vrf exec v$h1 \ | ||
| $MZ $h1 -6 -q -p 64 -A 2001:db8:1::1 -B 2001:db8:2::2 \ | ||
| -d 1msec -t udp "sp=1024,dp=0-32768" | ||
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| local t1_111=$(tc_rule_stats_get $ul2 111 ingress) | ||
| local t1_222=$(tc_rule_stats_get $ul2 222 ingress) | ||
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| local d111=$((t1_111 - t0_111)) | ||
| local d222=$((t1_222 - t0_222)) | ||
| multipath_eval "$what" $weight1 $weight2 $d111 $d222 | ||
|
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| ip nexthop replace id 103 group 101/102 type resilient | ||
| sysctl_restore net.ipv6.fib_multipath_hash_policy | ||
| } | ||
|
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| ping_ipv4() | ||
| { | ||
| ping_test $h1 192.0.2.18 | ||
| } | ||
|
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| ping_ipv6() | ||
| { | ||
| ping6_test $h1 2001:db8:2::2 | ||
| } | ||
|
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| 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 | ||
| } | ||
|
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| 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 | ||
| } | ||
|
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| 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 | ||
| } | ||
|
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| trap cleanup EXIT | ||
|
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| setup_prepare | ||
| setup_wait | ||
| tests_run | ||
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| exit $EXIT_STATUS |