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selftests: forwarding: Add multipath test for L4 hashing

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Add IPv6 multipath test using L4 hashing. Created with inputs from
Ido Schimmel.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-03-02 08:32:21 -08:00 committed by David S. Miller
parent de7a0f871f
commit 91a5c1ecba
1 changed files with 44 additions and 0 deletions
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44
tools/testing/selftests/net/forwarding/router_multipath.sh
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@ -235,6 +235,45 @@ multipath4_test()
sysctl -q -w net.ipv4.fib_multipath_hash_policy=$hash_policy
}
multipath6_l4_test()
{
local desc="$1"
local weight_rp12=$2
local weight_rp13=$3
local t0_rp12 t0_rp13 t1_rp12 t1_rp13
local packets_rp12 packets_rp13
local hash_policy
# Transmit multiple flows from h1 to h2 and make sure they are
# distributed between both multipath links (rp12 and rp13)
# according to the configured weights.
hash_policy=$(sysctl -n net.ipv6.fib_multipath_hash_policy)
sysctl -q -w net.ipv6.fib_multipath_hash_policy=1
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)
$MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=1024,dp=0-32768"
t1_rp12=$(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 $rp13
sysctl -q -w net.ipv6.fib_multipath_hash_policy=$hash_policy
}
multipath6_test()
{
local desc="$1"
@ -278,6 +317,11 @@ 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()