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selftests: mlxsw: qos_mc_aware: Tweak for min shaper 

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)