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Date: Wed, 31 Oct 2018 09:56:46 +0000
From: Ido Schimmel <idosch@...lanox.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC: "davem@...emloft.net" <davem@...emloft.net>,
Jiri Pirko <jiri@...lanox.com>,
Petr Machata <petrm@...lanox.com>, mlxsw <mlxsw@...lanox.com>,
Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net 4/4] selftests: mlxsw: qos_mc_aware: Add a test for UC
awareness
From: Petr Machata <petrm@...lanox.com>
In a previous patch, mlxsw was updated to configure a minimum bandwidth
allowance on MC TCs. Test that this indeed fixes the problem of UC
traffic overload pushing out all MC traffic.
Fixes: b5638d46c90a ("selftests: mlxsw: Add a test for UC behavior under MC flood")
Signed-off-by: Petr Machata <petrm@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
.../drivers/net/mlxsw/qos_mc_aware.sh | 93 ++++++++++++++-----
1 file changed, 70 insertions(+), 23 deletions(-)
diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh
index a8fc36d670e1..117f6f35d72f 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh
@@ -25,24 +25,24 @@
# Thus we set MTU to 10K on all involved interfaces. Then both unicast and
# multicast traffic uses 8K frames.
#
-# +-----------------------+ +----------------------------------+
-# | H1 | | H2 |
-# | | | unicast --> + $h2.111 |
-# | | | traffic | 192.0.2.129/28 |
-# | multicast | | | e-qos-map 0:1 |
-# | traffic | | | |
-# | $h1 + <----- | | + $h2 |
-# +-----|-----------------+ +--------------|-------------------+
-# | |
-# +-----|-------------------------------------------------|-------------------+
-# | + $swp1 + $swp2 |
-# | | >1Gbps | >1Gbps |
-# | +---|----------------+ +----------|----------------+ |
-# | | + $swp1.1 | | + $swp2.111 | |
+# +---------------------------+ +----------------------------------+
+# | H1 | | H2 |
+# | | | unicast --> + $h2.111 |
+# | multicast | | traffic | 192.0.2.129/28 |
+# | traffic | | | e-qos-map 0:1 |
+# | $h1 + <----- | | | |
+# | 192.0.2.65/28 | | | + $h2 |
+# +---------------|-----------+ +--------------|-------------------+
+# | |
+# +---------------|---------------------------------------|-------------------+
+# | $swp1 + + $swp2 |
+# | >1Gbps | | >1Gbps |
+# | +-------------|------+ +----------|----------------+ |
+# | | $swp1.1 + | | + $swp2.111 | |
# | | BR1 | SW | BR111 | |
-# | | + $swp3.1 | | + $swp3.111 | |
-# | +---|----------------+ +----------|----------------+ |
-# | \_________________________________________________/ |
+# | | $swp3.1 + | | + $swp3.111 | |
+# | +-------------|------+ +----------|----------------+ |
+# | \_______________________________________/ |
# | | |
# | + $swp3 |
# | | 1Gbps bottleneck |
@@ -51,6 +51,7 @@
# |
# +--|-----------------+
# | + $h3 H3 |
+# | | 192.0.2.66/28 |
# | | |
# | + $h3.111 |
# | 192.0.2.130/28 |
@@ -59,6 +60,7 @@
ALL_TESTS="
ping_ipv4
test_mc_aware
+ test_uc_aware
"
lib_dir=$(dirname $0)/../../../net/forwarding
@@ -68,14 +70,14 @@ source $lib_dir/lib.sh
h1_create()
{
- simple_if_init $h1
+ simple_if_init $h1 192.0.2.65/28
mtu_set $h1 10000
}
h1_destroy()
{
mtu_restore $h1
- simple_if_fini $h1
+ simple_if_fini $h1 192.0.2.65/28
}
h2_create()
@@ -97,7 +99,7 @@ h2_destroy()
h3_create()
{
- simple_if_init $h3
+ simple_if_init $h3 192.0.2.66/28
mtu_set $h3 10000
vlan_create $h3 111 v$h3 192.0.2.130/28
@@ -108,7 +110,7 @@ h3_destroy()
vlan_destroy $h3 111
mtu_restore $h3
- simple_if_fini $h3
+ simple_if_fini $h3 192.0.2.66/28
}
switch_create()
@@ -251,7 +253,7 @@ measure_uc_rate()
# average ingress rate to somewhat mitigate this.
local min_ingress=2147483648
- mausezahn $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
+ $MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
-a own -b $h3mac -t udp -q &
sleep 1
@@ -291,7 +293,7 @@ test_mc_aware()
check_err $? "Could not get high enough UC-only ingress rate"
local ucth1=${uc_rate[1]}
- mausezahn $h1 -p 8000 -c 0 -a own -b bc -t udp -q &
+ $MZ $h1 -p 8000 -c 0 -a own -b bc -t udp -q &
local d0=$(date +%s)
local t0=$(ethtool_stats_get $h3 rx_octets_prio_0)
@@ -335,6 +337,51 @@ test_mc_aware()
echo " egress UC throughput $(humanize ${uc_rate_2[1]})"
echo " ingress MC throughput $(humanize $mc_ir)"
echo " egress MC throughput $(humanize $mc_er)"
+ echo
+}
+
+test_uc_aware()
+{
+ RET=0
+
+ $MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
+ -a own -b $h3mac -t udp -q &
+
+ local d0=$(date +%s)
+ local t0=$(ethtool_stats_get $h3 rx_octets_prio_1)
+ local u0=$(ethtool_stats_get $swp2 rx_octets_prio_1)
+ sleep 1
+
+ local attempts=50
+ local passes=0
+ local i
+
+ for ((i = 0; i < attempts; ++i)); do
+ if $ARPING -c 1 -I $h1 -b 192.0.2.66 -q -w 0.1; then
+ ((passes++))
+ fi
+
+ sleep 0.1
+ done
+
+ local d1=$(date +%s)
+ local t1=$(ethtool_stats_get $h3 rx_octets_prio_1)
+ local u1=$(ethtool_stats_get $swp2 rx_octets_prio_1)
+
+ local interval=$((d1 - d0))
+ local uc_ir=$(rate $u0 $u1 $interval)
+ local uc_er=$(rate $t0 $t1 $interval)
+
+ ((attempts == passes))
+ check_err $?
+
+ # Suppress noise from killing mausezahn.
+ { kill %% && wait; } 2>/dev/null
+
+ log_test "MC performace under UC overload"
+ echo " ingress UC throughput $(humanize ${uc_ir})"
+ echo " egress UC throughput $(humanize ${uc_er})"
+ echo " sent $attempts BC ARPs, got $passes responses"
}
trap cleanup EXIT
--
2.17.2
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