From: "Jin Li" <jinli@lanxincomputing.com>
To: "Shuah Khan" <shuah@kernel.org>,
"David Ahern" <dsahern@kernel.org>,
"Ido Schimmel" <idosch@nvidia.com>
Cc: "David S . Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Simon Horman" <horms@kernel.org>, <netdev@vger.kernel.org>,
<linux-kselftest@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
"Jin Li" <jinli@lanxincomputing.com>
Subject: [PATCH] selftests: net: forwarding: bridge_vlan_mcast: Allow default startup query interval to vary by HZ
Date: Fri, 9 Oct 2026 10:41:09 +0000 [thread overview]
Message-ID: <20261009104109.754133-1-jinli@lanxincomputing.com> (raw)
The mcast_startup_query_interval default value is calculated as
125 * HZ / 4. With CONFIG_HZ=250, this results in 3124 instead of
3125 due to integer truncation. The test currently hardcodes 3125,
which fails on kernels built with CONFIG_HZ=250.
Allow a +/- 1 tolerance for the default value check to account for
this rounding, while still catching genuine regressions in the
default value.
Signed-off-by: Jin Li <jinli@lanxincomputing.com>
---
tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh b/tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh
index c4cd2078a8db..e72680869721 100755
--- a/tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh
@@ -383,7 +383,7 @@ vlmc_startup_query_test()
echo -n $goutput |
jq -e ".[].vlans[] | select(.vlan == 10 and \
- .mcast_startup_query_interval == 3125) " &>/dev/null
+ .mcast_startup_query_interval >= 3124 and .mcast_startup_query_interval <= 3126) " &>/dev/null
check_err $? "Wrong default mcast_startup_query_interval global vlan option value"
log_test "Vlan mcast_startup_query_interval global option default value"
--
2.53.0
reply other threads:[~2026-10-09 10:41 UTC|newest]
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