From ba95e7930957e853ffae2d4528e057abe486a005 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Wed, 2 Mar 2022 18:31:28 +0200 Subject: [PATCH] selftests: forwarding: hw_stats_l3: Add a new test Add a test that verifies operation of L3 HW statistics. Signed-off-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- .../selftests/net/forwarding/hw_stats_l3.sh | 332 ++++++++++++++++++ 1 file changed, 332 insertions(+) create mode 100755 tools/testing/selftests/net/forwarding/hw_stats_l3.sh diff --git a/tools/testing/selftests/net/forwarding/hw_stats_l3.sh b/tools/testing/selftests/net/forwarding/hw_stats_l3.sh new file mode 100755 index 000000000000..1c11c4256d06 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/hw_stats_l3.sh @@ -0,0 +1,332 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# +--------------------+ +----------------------+ +# | H1 | | H2 | +# | | | | +# | $h1.200 + | | + $h2.200 | +# | 192.0.2.1/28 | | | | 192.0.2.18/28 | +# | 2001:db8:1::1/64 | | | | 2001:db8:2::1/64 | +# | | | | | | +# | $h1 + | | + $h2 | +# | | | | | | +# +------------------|-+ +-|--------------------+ +# | | +# +------------------|-------------------------|--------------------+ +# | SW | | | +# | | | | +# | $rp1 + + $rp2 | +# | | | | +# | $rp1.200 + + $rp2.200 | +# | 192.0.2.2/28 192.0.2.17/28 | +# | 2001:db8:1::2/64 2001:db8:2::2/64 | +# | | +# +-----------------------------------------------------------------+ + +ALL_TESTS=" + ping_ipv4 + ping_ipv6 + test_stats_rx_ipv4 + test_stats_tx_ipv4 + test_stats_rx_ipv6 + test_stats_tx_ipv6 + respin_enablement + test_stats_rx_ipv4 + test_stats_tx_ipv4 + test_stats_rx_ipv6 + test_stats_tx_ipv6 + reapply_config + ping_ipv4 + ping_ipv6 + test_stats_rx_ipv4 + test_stats_tx_ipv4 + test_stats_rx_ipv6 + test_stats_tx_ipv6 + test_stats_report_rx + test_stats_report_tx + test_destroy_enabled + test_double_enable +" +NUM_NETIFS=4 +source lib.sh + +h1_create() +{ + simple_if_init $h1 + vlan_create $h1 200 v$h1 192.0.2.1/28 2001:db8:1::1/64 + ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2 + ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2 +} + +h1_destroy() +{ + ip -6 route del 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2 + ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2 + vlan_destroy $h1 200 + simple_if_fini $h1 +} + +h2_create() +{ + simple_if_init $h2 + vlan_create $h2 200 v$h2 192.0.2.18/28 2001:db8:2::1/64 + ip route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17 + ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2 +} + +h2_destroy() +{ + ip -6 route del 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2 + ip route del 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17 + vlan_destroy $h2 200 + simple_if_fini $h2 +} + +router_rp1_200_create() +{ + ip link add name $rp1.200 up \ + link $rp1 addrgenmode eui64 type vlan id 200 + ip address add dev $rp1.200 192.0.2.2/28 + ip address add dev $rp1.200 2001:db8:1::2/64 + ip stats set dev $rp1.200 l3_stats on +} + +router_rp1_200_destroy() +{ + ip stats set dev $rp1.200 l3_stats off + ip address del dev $rp1.200 2001:db8:1::2/64 + ip address del dev $rp1.200 192.0.2.2/28 + ip link del dev $rp1.200 +} + +router_create() +{ + ip link set dev $rp1 up + router_rp1_200_create + + ip link set dev $rp2 up + vlan_create $rp2 200 "" 192.0.2.17/28 2001:db8:2::2/64 +} + +router_destroy() +{ + vlan_destroy $rp2 200 + ip link set dev $rp2 down + + router_rp1_200_destroy + ip link set dev $rp1 down +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + rp1=${NETIFS[p2]} + + rp2=${NETIFS[p3]} + h2=${NETIFS[p4]} + + rp1mac=$(mac_get $rp1) + rp2mac=$(mac_get $rp2) + + vrf_prepare + + h1_create + h2_create + + router_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + router_destroy + + h2_destroy + h1_destroy + + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1.200 192.0.2.18 " IPv4" +} + +ping_ipv6() +{ + ping_test $h1.200 2001:db8:2::1 " IPv6" +} + +get_l3_stat() +{ + local selector=$1; shift + + ip -j stats show dev $rp1.200 group offload subgroup l3_stats | + jq '.[0].stats64.'$selector +} + +send_packets_rx_ipv4() +{ + # Send 21 packets instead of 20, because the first one might trap and go + # through the SW datapath, which might not bump the HW counter. + $MZ $h1.200 -c 21 -d 20msec -p 100 \ + -a own -b $rp1mac -A 192.0.2.1 -B 192.0.2.18 \ + -q -t udp sp=54321,dp=12345 +} + +send_packets_rx_ipv6() +{ + $MZ $h1.200 -6 -c 21 -d 20msec -p 100 \ + -a own -b $rp1mac -A 2001:db8:1::1 -B 2001:db8:2::1 \ + -q -t udp sp=54321,dp=12345 +} + +send_packets_tx_ipv4() +{ + $MZ $h2.200 -c 21 -d 20msec -p 100 \ + -a own -b $rp2mac -A 192.0.2.18 -B 192.0.2.1 \ + -q -t udp sp=54321,dp=12345 +} + +send_packets_tx_ipv6() +{ + $MZ $h2.200 -6 -c 21 -d 20msec -p 100 \ + -a own -b $rp2mac -A 2001:db8:2::1 -B 2001:db8:1::1 \ + -q -t udp sp=54321,dp=12345 +} + +___test_stats() +{ + local dir=$1; shift + local prot=$1; shift + + local a + local b + + a=$(get_l3_stat ${dir}.packets) + send_packets_${dir}_${prot} + "$@" + b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \ + get_l3_stat ${dir}.packets) + check_err $? "Traffic not reflected in the counter: $a -> $b" +} + +__test_stats() +{ + local dir=$1; shift + local prot=$1; shift + + RET=0 + ___test_stats "$dir" "$prot" + log_test "Test $dir packets: $prot" +} + +test_stats_rx_ipv4() +{ + __test_stats rx ipv4 +} + +test_stats_tx_ipv4() +{ + __test_stats tx ipv4 +} + +test_stats_rx_ipv6() +{ + __test_stats rx ipv6 +} + +test_stats_tx_ipv6() +{ + __test_stats tx ipv6 +} + +# Make sure everything works well even after stats have been disabled and +# reenabled on the same device without touching the L3 configuration. +respin_enablement() +{ + log_info "Turning stats off and on again" + ip stats set dev $rp1.200 l3_stats off + ip stats set dev $rp1.200 l3_stats on +} + +# For the initial run, l3_stats is enabled on a completely set up netdevice. Now +# do it the other way around: enabling the L3 stats on an L2 netdevice, and only +# then apply the L3 configuration. +reapply_config() +{ + log_info "Reapplying configuration" + + router_rp1_200_destroy + + ip link add name $rp1.200 link $rp1 addrgenmode none type vlan id 200 + ip stats set dev $rp1.200 l3_stats on + ip link set dev $rp1.200 up addrgenmode eui64 + ip address add dev $rp1.200 192.0.2.2/28 + ip address add dev $rp1.200 2001:db8:1::2/64 +} + +__test_stats_report() +{ + local dir=$1; shift + local prot=$1; shift + + local a + local b + + RET=0 + + a=$(get_l3_stat ${dir}.packets) + send_packets_${dir}_${prot} + ip address flush dev $rp1.200 + b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \ + get_l3_stat ${dir}.packets) + check_err $? "Traffic not reflected in the counter: $a -> $b" + log_test "Test ${dir} packets: stats pushed on loss of L3" + + ip stats set dev $rp1.200 l3_stats off + ip link del dev $rp1.200 + router_rp1_200_create +} + +test_stats_report_rx() +{ + __test_stats_report rx ipv4 +} + +test_stats_report_tx() +{ + __test_stats_report tx ipv4 +} + +test_destroy_enabled() +{ + RET=0 + + ip link del dev $rp1.200 + router_rp1_200_create + + log_test "Destroy l3_stats-enabled netdev" +} + +test_double_enable() +{ + RET=0 + ___test_stats rx ipv4 \ + ip stats set dev $rp1.200 l3_stats on + log_test "Test stat retention across a spurious enablement" +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS