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selftests: mlxsw: tc_restrictions: Fix test failure with new iproute2

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As explained in [1], iproute2 started rejecting tc-police burst sizes
that result in an overflow. This can happen when the burst size is high
enough and the rate is low enough.

A couple of test cases specify such configurations, resulting in
iproute2 errors and test failure.

Fix by reducing the burst size so that the test will pass with both new
and old iproute2 versions.

[1] https://lore.kernel.org/netdev/20250916215731.3431465-1-jay.vosburgh@canonical.com/

Fixes: cb12d17632 ("selftests: mlxsw: tc_restrictions: Test tc-police restrictions")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/88b00c6e85188aa6a065dc240206119b328c46e1.1770643998.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel
2026-02-09 14:53:53 +01:00
committed by Jakub Kicinski
parent a6a9bc544b
commit a2646773a0
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/drivers/net/mlxsw/tc_restrictions.sh
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@@ -317,7 +317,7 @@ police_limits_test()
tc filter add dev $swp1 ingress pref 1 proto ip handle 101 \
flower skip_sw \
action police rate 0.5kbit burst 1m conform-exceed drop/ok
action police rate 0.5kbit burst 2k conform-exceed drop/ok
check_fail $? "Incorrect success to add police action with too low rate"
tc filter add dev $swp1 ingress pref 1 proto ip handle 101 \
@@ -327,7 +327,7 @@ police_limits_test()
tc filter add dev $swp1 ingress pref 1 proto ip handle 101 \
flower skip_sw \
action police rate 1.5kbit burst 1m conform-exceed drop/ok
action police rate 1.5kbit burst 2k conform-exceed drop/ok
check_err $? "Failed to add police action with low rate"
tc filter del dev $swp1 ingress protocol ip pref 1 handle 101 flower