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selftests: mlxsw: qos_mc_aware: Tweak for min shaper

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Since the minimum shaper is now being enabled for MC TCs, it's
unreasonable to expect no UC traffic loss. Minimal min shaper value is
200Mbps, which is 20% of the 1Gbps that this test configures on egress.
To cover for glitches, tolerate up to 25% UC degradation under MC
overload.

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 2018-10-31 09:56:45 +00:00 committed by David S. Miller
parent 0fe6402316
commit 8f3f09358c
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh
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@ -311,7 +311,7 @@ test_mc_aware()
ret = 100 * ($ucth1 - $ucth2) / $ucth1
if (ret > 0) { ret } else { 0 }
")
check_err $(bc <<< "$deg > 10")
check_err $(bc <<< "$deg > 25")
local interval=$((d1 - d0))
local mc_ir=$(rate $u0 $u1 $interval)