From 4fb20ae13711ee05fba6e5dd2b81a83d9e5b5249 Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@mellanox.com>
Date: Wed, 28 Feb 2018 12:25:12 +0200
Subject: [PATCH] selftests: forwarding: Test IPv6 weighted nexthops
Have one host generate 16K IPv6 echo requests with a random flow label
and check that they are distributed between both multipath links
according to the provided weights.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
.../net/forwarding/router_multipath.sh | 36 +++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/tools/testing/selftests/net/forwarding/router_multipath.sh b/tools/testing/selftests/net/forwarding/router_multipath.sh
index 5b425dffb5d00..d31888e3133e3 100755
--- a/tools/testing/selftests/net/forwarding/router_multipath.sh
+++ b/tools/testing/selftests/net/forwarding/router_multipath.sh
@@ -226,12 +226,48 @@ multipath4_test()
sysctl -q -w net.ipv4.fib_multipath_hash_policy=$hash_policy
}
+multipath6_test()
+{
+ local weight_rp12=$1
+ local weight_rp13=$2
+ 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 $(seq 1 16384); do
+ ip vrf exec vrf-h1 ping 2001:db8:2::2 -F 0 -c 1 -q &> /dev/null
+ done
+
+ t1_rp12=$(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 $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"
multipath4_test 1 1
multipath4_test 2 1
multipath4_test 11 45
+
+ log_info "Running IPv6 multipath tests"
+ multipath6_test 1 1
+ multipath6_test 2 1
+ multipath6_test 11 45
}
setup_prepare()
--
2.30.2