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selftests: forwarding: Test IPv6 weighted nexthops

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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>
This commit is contained in:
Ido Schimmel 2018-02-28 12:25:12 +02:00 committed by David S. Miller
parent 3d578d8795
commit 4fb20ae137
1 changed files with 36 additions and 0 deletions
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36
tools/testing/selftests/net/forwarding/router_multipath.sh
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@ -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()