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selftests: mlxsw: qos_mc_aware: Fix mausezahn invocation 

Mausezahn does not recognize "own" as a keyword on source IP address. As a
result, the MC stream is not running at all, and therefore no UC
degradation can be observed even in principle.

Fix the invocation, and tighten the test: due to the minimum shaper
configured at the MC TCs, we always expect about 20% degradation. Fail the
test if it is lower.

Fixes: 573363a68f ("selftests: mlxsw: Add qos_lib.sh")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.5-dsi
Petr Machata 2020-01-15 13:53:47 +02:00 committed by David S. Miller
parent 63963d0f9d
commit fef6d67049
1 changed files with 6 additions and 2 deletions
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8
tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh
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@ -232,7 +232,7 @@ test_mc_aware()
stop_traffic
local ucth1=${uc_rate[1]}
start_traffic $h1 own bc bc
start_traffic $h1 192.0.2.65 bc bc
local d0=$(date +%s)
local t0=$(ethtool_stats_get $h3 rx_octets_prio_0)
@ -254,7 +254,11 @@ test_mc_aware()
ret = 100 * ($ucth1 - $ucth2) / $ucth1
if (ret > 0) { ret } else { 0 }
")
check_err $(bc <<< "$deg > 25")
# Minimum shaper of 200Mbps on MC TCs should cause about 20% of
# degradation on 1Gbps link.
check_err $(bc <<< "$deg < 15") "Minimum shaper not in effect"
check_err $(bc <<< "$deg > 25") "MC traffic degrades UC performance too much"
local interval=$((d1 - d0))
local mc_ir=$(rate $u0 $u1 $interval)