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selftests: mlxsw: qos_mc_aware: Add a test for UC awareness
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: b5638d46c9 ("selftests: mlxsw: Add a test for UC behavior under MC flood")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
David S. Miller
parent
8f3f09358c
commit
a5ee171d08
@ -25,24 +25,24 @@
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# Thus we set MTU to 10K on all involved interfaces. Then both unicast and
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# multicast traffic uses 8K frames.
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#
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# +-----------------------+ +----------------------------------+
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# +---------------------------+ +----------------------------------+
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# | H1 | | H2 |
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# | | | unicast --> + $h2.111 |
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# | | | traffic | 192.0.2.129/28 |
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# | multicast | | | e-qos-map 0:1 |
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# | traffic | | | |
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# | $h1 + <----- | | + $h2 |
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# +-----|-----------------+ +--------------|-------------------+
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# | multicast | | traffic | 192.0.2.129/28 |
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# | traffic | | | e-qos-map 0:1 |
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# | $h1 + <----- | | | |
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# | 192.0.2.65/28 | | | + $h2 |
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# +---------------|-----------+ +--------------|-------------------+
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# | |
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# +-----|-------------------------------------------------|-------------------+
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# | + $swp1 + $swp2 |
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# | | >1Gbps | >1Gbps |
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# | +---|----------------+ +----------|----------------+ |
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# | | + $swp1.1 | | + $swp2.111 | |
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# +---------------|---------------------------------------|-------------------+
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# | $swp1 + + $swp2 |
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# | >1Gbps | | >1Gbps |
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# | +-------------|------+ +----------|----------------+ |
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# | | $swp1.1 + | | + $swp2.111 | |
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# | | BR1 | SW | BR111 | |
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# | | + $swp3.1 | | + $swp3.111 | |
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# | +---|----------------+ +----------|----------------+ |
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# | \_________________________________________________/ |
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# | | $swp3.1 + | | + $swp3.111 | |
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# | +-------------|------+ +----------|----------------+ |
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# | \_______________________________________/ |
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# | | |
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# | + $swp3 |
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# | | 1Gbps bottleneck |
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@ -51,6 +51,7 @@
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# |
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# +--|-----------------+
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# | + $h3 H3 |
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# | | 192.0.2.66/28 |
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# | | |
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# | + $h3.111 |
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# | 192.0.2.130/28 |
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@ -59,6 +60,7 @@
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ALL_TESTS="
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ping_ipv4
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test_mc_aware
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test_uc_aware
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"
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lib_dir=$(dirname $0)/../../../net/forwarding
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@ -68,14 +70,14 @@ source $lib_dir/lib.sh
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h1_create()
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{
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simple_if_init $h1
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simple_if_init $h1 192.0.2.65/28
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mtu_set $h1 10000
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}
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h1_destroy()
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{
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mtu_restore $h1
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simple_if_fini $h1
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simple_if_fini $h1 192.0.2.65/28
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}
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h2_create()
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@ -97,7 +99,7 @@ h2_destroy()
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h3_create()
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{
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simple_if_init $h3
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simple_if_init $h3 192.0.2.66/28
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mtu_set $h3 10000
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vlan_create $h3 111 v$h3 192.0.2.130/28
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@ -108,7 +110,7 @@ h3_destroy()
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vlan_destroy $h3 111
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mtu_restore $h3
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simple_if_fini $h3
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simple_if_fini $h3 192.0.2.66/28
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}
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switch_create()
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@ -251,7 +253,7 @@ measure_uc_rate()
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# average ingress rate to somewhat mitigate this.
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local min_ingress=2147483648
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mausezahn $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
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$MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
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-a own -b $h3mac -t udp -q &
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sleep 1
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@ -291,7 +293,7 @@ test_mc_aware()
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check_err $? "Could not get high enough UC-only ingress rate"
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local ucth1=${uc_rate[1]}
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mausezahn $h1 -p 8000 -c 0 -a own -b bc -t udp -q &
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$MZ $h1 -p 8000 -c 0 -a own -b bc -t udp -q &
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local d0=$(date +%s)
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local t0=$(ethtool_stats_get $h3 rx_octets_prio_0)
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@ -335,6 +337,51 @@ test_mc_aware()
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echo " egress UC throughput $(humanize ${uc_rate_2[1]})"
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echo " ingress MC throughput $(humanize $mc_ir)"
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echo " egress MC throughput $(humanize $mc_er)"
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echo
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}
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test_uc_aware()
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{
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RET=0
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$MZ $h2.111 -p 8000 -A 192.0.2.129 -B 192.0.2.130 -c 0 \
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-a own -b $h3mac -t udp -q &
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local d0=$(date +%s)
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local t0=$(ethtool_stats_get $h3 rx_octets_prio_1)
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local u0=$(ethtool_stats_get $swp2 rx_octets_prio_1)
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sleep 1
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local attempts=50
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local passes=0
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local i
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for ((i = 0; i < attempts; ++i)); do
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if $ARPING -c 1 -I $h1 -b 192.0.2.66 -q -w 0.1; then
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((passes++))
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fi
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sleep 0.1
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done
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local d1=$(date +%s)
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local t1=$(ethtool_stats_get $h3 rx_octets_prio_1)
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local u1=$(ethtool_stats_get $swp2 rx_octets_prio_1)
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local interval=$((d1 - d0))
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local uc_ir=$(rate $u0 $u1 $interval)
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local uc_er=$(rate $t0 $t1 $interval)
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((attempts == passes))
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check_err $?
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# Suppress noise from killing mausezahn.
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{ kill %% && wait; } 2>/dev/null
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log_test "MC performace under UC overload"
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echo " ingress UC throughput $(humanize ${uc_ir})"
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echo " egress UC throughput $(humanize ${uc_er})"
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echo " sent $attempts BC ARPs, got $passes responses"
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}
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trap cleanup EXIT
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