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selftests: forwarding: Remove IPv6 L3 multipath hash tests
The multipath tests currently test both the L3 and L4 multipath hash policies for IPv6, but only the L4 policy for IPv4. The reason is mostly historic: When the initial multipath test was added (router_multipath.sh) the IPv6 L4 policy did not exist and was later added to the test. The other multipath tests copied this pattern although there is little value in testing both policies. Align the IPv4 and IPv6 tests and only test the L4 policy. On my system, this reduces the run time of router_multipath.sh by 89% because of the repeated ping6 invocations to randomize the flow label. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://lore.kernel.org/r/20240304095612.462900-2-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel
Jakub Kicinski
parent
00af2aa93b
commit
7b2d64f933
@ -64,7 +64,6 @@ ALL_TESTS="
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ping_ipv6
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multipath_ipv4
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multipath_ipv6
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multipath_ipv6_l4
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"
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NUM_NETIFS=6
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@ -264,34 +263,6 @@ multipath6_test()
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local weight1=$1; shift
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local weight2=$1; shift
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sysctl_set net.ipv6.fib_multipath_hash_policy 0
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ip nexthop replace id 103 group 101,$weight1/102,$weight2
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local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
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local t0_222=$(tc_rule_stats_get $ul2 222 ingress)
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# Generate 16384 echo requests, each with a random flow label.
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for ((i=0; i < 16384; ++i)); do
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ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
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done
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local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
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local t1_222=$(tc_rule_stats_get $ul2 222 ingress)
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local d111=$((t1_111 - t0_111))
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local d222=$((t1_222 - t0_222))
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multipath_eval "$what" $weight1 $weight2 $d111 $d222
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ip nexthop replace id 103 group 101/102
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sysctl_restore net.ipv6.fib_multipath_hash_policy
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}
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multipath6_l4_test()
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{
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local what=$1; shift
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local weight1=$1; shift
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local weight2=$1; shift
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sysctl_set net.ipv6.fib_multipath_hash_policy 1
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ip nexthop replace id 103 group 101,$weight1/102,$weight2
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@ -339,14 +310,6 @@ multipath_ipv6()
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multipath6_test "Weighted MP 11:45" 11 45
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}
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multipath_ipv6_l4()
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{
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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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trap cleanup EXIT
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setup_prepare
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@ -64,7 +64,6 @@ ALL_TESTS="
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ping_ipv6
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multipath_ipv4
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multipath_ipv6
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multipath_ipv6_l4
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"
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NUM_NETIFS=6
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@ -267,35 +266,6 @@ multipath6_test()
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local weight1=$1; shift
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local weight2=$1; shift
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sysctl_set net.ipv6.fib_multipath_hash_policy 0
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ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
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type resilient
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local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
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local t0_222=$(tc_rule_stats_get $ul2 222 ingress)
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# Generate 16384 echo requests, each with a random flow label.
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for ((i=0; i < 16384; ++i)); do
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ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
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done
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local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
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local t1_222=$(tc_rule_stats_get $ul2 222 ingress)
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local d111=$((t1_111 - t0_111))
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local d222=$((t1_222 - t0_222))
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multipath_eval "$what" $weight1 $weight2 $d111 $d222
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ip nexthop replace id 103 group 101/102 type resilient
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sysctl_restore net.ipv6.fib_multipath_hash_policy
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}
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multipath6_l4_test()
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{
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local what=$1; shift
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local weight1=$1; shift
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local weight2=$1; shift
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sysctl_set net.ipv6.fib_multipath_hash_policy 1
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ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
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type resilient
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@ -344,14 +314,6 @@ multipath_ipv6()
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multipath6_test "Weighted MP 11:45" 11 45
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}
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multipath_ipv6_l4()
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{
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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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trap cleanup EXIT
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setup_prepare
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@ -218,7 +218,7 @@ multipath4_test()
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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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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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@ -251,34 +251,6 @@ multipath6_l4_test()
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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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@ -301,11 +273,6 @@ multipath_test()
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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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ping_ipv4_blackhole()
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@ -195,7 +195,7 @@ multipath4_test()
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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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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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@ -232,38 +232,6 @@ multipath6_l4_test()
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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 route replace 2001:db8:2::/64 vrf vrf-r1 \
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nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
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nexthop via fe80:3::23 dev $rp13 weight $weight_rp13
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t0_rp12=$(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 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
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done
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t1_rp12=$(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 route replace 2001:db8:2::/64 vrf vrf-r1 \
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nexthop via fe80:2::22 dev $rp12 \
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nexthop via fe80:3::23 dev $rp13
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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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@ -275,11 +243,6 @@ multipath_test()
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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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