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>

diff --git a/tools/testing/selftests/net/forwarding/gre_multipath_nh.sh b/tools/testing/selftests/net/forwarding/gre_multipath_nh.sh
index d03aa2cab9fda1556a70630127cf0b0f0d513cf1..62281898e7a49a9cbe6bf5965aba499aeeed36bd 100755 (executable)
--- a/tools/testing/selftests/net/forwarding/gre_multipath_nh.sh
+++ b/tools/testing/selftests/net/forwarding/gre_multipath_nh.sh
@@ -64,7 +64,6 @@ ALL_TESTS="
        ping_ipv6
        multipath_ipv4
        multipath_ipv6
-       multipath_ipv6_l4
 "
 
 NUM_NETIFS=6
@@ -264,34 +263,6 @@ multipath6_test()
        local weight1=$1; shift
        local weight2=$1; shift
 
-       sysctl_set net.ipv6.fib_multipath_hash_policy 0
-       ip nexthop replace id 103 group 101,$weight1/102,$weight2
-
-       local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
-       local t0_222=$(tc_rule_stats_get $ul2 222 ingress)
-
-       # Generate 16384 echo requests, each with a random flow label.
-       for ((i=0; i < 16384; ++i)); do
-               ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
-       done
-
-       local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
-       local t1_222=$(tc_rule_stats_get $ul2 222 ingress)
-
-       local d111=$((t1_111 - t0_111))
-       local d222=$((t1_222 - t0_222))
-       multipath_eval "$what" $weight1 $weight2 $d111 $d222
-
-       ip nexthop replace id 103 group 101/102
-       sysctl_restore net.ipv6.fib_multipath_hash_policy
-}
-
-multipath6_l4_test()
-{
-       local what=$1; shift
-       local weight1=$1; shift
-       local weight2=$1; shift
-
        sysctl_set net.ipv6.fib_multipath_hash_policy 1
        ip nexthop replace id 103 group 101,$weight1/102,$weight2
 
@@ -339,14 +310,6 @@ multipath_ipv6()
        multipath6_test "Weighted MP 11:45" 11 45
 }
 
-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
-}
-
 trap cleanup EXIT
 
 setup_prepare

diff --git a/tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh b/tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh
index 088b65e64d6653d66431a51625e62ced0d4ab468..2085111bcd673fc6e2d988adb3cdf347375fbe1c 100755 (executable)
--- a/tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh
+++ b/tools/testing/selftests/net/forwarding/gre_multipath_nh_res.sh
@@ -64,7 +64,6 @@ ALL_TESTS="
        ping_ipv6
        multipath_ipv4
        multipath_ipv6
-       multipath_ipv6_l4
 "
 
 NUM_NETIFS=6
@@ -267,35 +266,6 @@ multipath6_test()
        local weight1=$1; shift
        local weight2=$1; shift
 
-       sysctl_set net.ipv6.fib_multipath_hash_policy 0
-       ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
-               type resilient
-
-       local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
-       local t0_222=$(tc_rule_stats_get $ul2 222 ingress)
-
-       # Generate 16384 echo requests, each with a random flow label.
-       for ((i=0; i < 16384; ++i)); do
-               ip vrf exec v$h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
-       done
-
-       local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
-       local t1_222=$(tc_rule_stats_get $ul2 222 ingress)
-
-       local d111=$((t1_111 - t0_111))
-       local d222=$((t1_222 - t0_222))
-       multipath_eval "$what" $weight1 $weight2 $d111 $d222
-
-       ip nexthop replace id 103 group 101/102 type resilient
-       sysctl_restore net.ipv6.fib_multipath_hash_policy
-}
-
-multipath6_l4_test()
-{
-       local what=$1; shift
-       local weight1=$1; shift
-       local weight2=$1; shift
-
        sysctl_set net.ipv6.fib_multipath_hash_policy 1
        ip nexthop replace id 103 group 101,$weight1/102,$weight2 \
                type resilient
@@ -344,14 +314,6 @@ multipath_ipv6()
        multipath6_test "Weighted MP 11:45" 11 45
 }
 
-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
-}
-
 trap cleanup EXIT
 
 setup_prepare

diff --git a/tools/testing/selftests/net/forwarding/router_mpath_nh.sh b/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
index a0d612e049901a20dabc81ba5819178d4fc51e33..2ef469ff3bc4b3c16a70c0350d6fc7b800bcf4d9 100755 (executable)
--- a/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
+++ b/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
@@ -218,7 +218,7 @@ multipath4_test()
        sysctl_restore net.ipv4.fib_multipath_hash_policy
 }
 
-multipath6_l4_test()
+multipath6_test()
 {
        local desc="$1"
        local weight_rp12=$2
@@ -251,34 +251,6 @@ multipath6_l4_test()
        sysctl_restore net.ipv6.fib_multipath_hash_policy
 }
 
-multipath6_test()
-{
-       local desc="$1"
-       local weight_rp12=$2
-       local weight_rp13=$3
-       local t0_rp12 t0_rp13 t1_rp12 t1_rp13
-       local packets_rp12 packets_rp13
-
-       ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13
-
-       t0_rp12=$(link_stats_tx_packets_get $rp12)
-       t0_rp13=$(link_stats_tx_packets_get $rp13)
-
-       # Generate 16384 echo requests, each with a random flow label.
-       for _ in $(seq 1 16384); do
-               ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1
-       done
-
-       t1_rp12=$(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
-
-       ip nexthop replace id 106 group 104/105
-}
-
 multipath_test()
 {
        log_info "Running IPv4 multipath tests"
@@ -301,11 +273,6 @@ multipath_test()
        multipath6_test "ECMP" 1 1
        multipath6_test "Weighted MP 2:1" 2 1
        multipath6_test "Weighted MP 11:45" 11 45
-
-       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
 }
 
 ping_ipv4_blackhole()

diff --git a/tools/testing/selftests/net/forwarding/router_multipath.sh b/tools/testing/selftests/net/forwarding/router_multipath.sh
index 464821c587a5e8cd073db1b64ab8f39267a669b2..a4eceeb5c06ea7b8cf0d0ccbfc8297ad2c576298 100755 (executable)
--- a/tools/testing/selftests/net/forwarding/router_multipath.sh
+++ b/tools/testing/selftests/net/forwarding/router_multipath.sh
@@ -195,7 +195,7 @@ multipath4_test()
        sysctl_restore net.ipv4.fib_multipath_hash_policy
 }
 
-multipath6_l4_test()
+multipath6_test()
 {
        local desc="$1"
        local weight_rp12=$2
@@ -232,38 +232,6 @@ multipath6_l4_test()
        sysctl_restore net.ipv6.fib_multipath_hash_policy
 }
 
-multipath6_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
-
-       ip route replace 2001:db8:2::/64 vrf vrf-r1 \
-              nexthop via fe80:2::22 dev $rp12 weight $weight_rp12 \
-              nexthop via fe80:3::23 dev $rp13 weight $weight_rp13
-
-       t0_rp12=$(link_stats_tx_packets_get $rp12)
-       t0_rp13=$(link_stats_tx_packets_get $rp13)
-
-       # Generate 16384 echo requests, each with a random flow label.
-       for _ in $(seq 1 16384); do
-              ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
-       done
-
-       t1_rp12=$(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
-
-       ip route replace 2001:db8:2::/64 vrf vrf-r1 \
-              nexthop via fe80:2::22 dev $rp12 \
-              nexthop via fe80:3::23 dev $rp13
-}
-
 multipath_test()
 {
        log_info "Running IPv4 multipath tests"
@@ -275,11 +243,6 @@ multipath_test()
        multipath6_test "ECMP" 1 1
        multipath6_test "Weighted MP 2:1" 2 1
        multipath6_test "Weighted MP 11:45" 11 45
-
-       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
 }
 
 setup_prepare()