Re: [PATCH net 2/2] selftests: net: Add bridge VLAN range grouping tests

From: Simon Horman

Date: Tue Feb 24 2026 - 03:00:35 EST


On Sun, Feb 22, 2026 at 10:53:38AM +0200, Danielle Ratson wrote:
> Add a new test file bridge_vlan_dump.sh with four test cases that verify
> VLANs with different per-VLAN options are not incorrectly grouped into
> ranges in the dump output.
>
> The tests verify the kernel's br_vlan_opts_eq_range() function correctly
> prevents VLAN range grouping when neigh_suppress, mcast_max_groups,
> mcast_n_groups, or mcast_enabled options differ.
>
> Each test verifies that VLANs with different option values appear as
> individual entries rather than ranges, and that VLANs with matching
> values are properly grouped together.
>
> Example output:
>
> $ ./bridge_vlan_dump.sh
> TEST: VLAN range grouping with neigh_suppress [ OK ]
> TEST: VLAN range grouping with mcast_max_groups [ OK ]
> TEST: VLAN range grouping with mcast_n_groups [ OK ]
> TEST: VLAN range grouping with mcast_enabled [ OK ]
>
> Signed-off-by: Danielle Ratson <danieller@xxxxxxxxxx>
> Reviewed-by: Petr Machata <petrm@xxxxxxxxxx>
> ---
> tools/testing/selftests/net/Makefile | 1 +
> .../testing/selftests/net/bridge_vlan_dump.sh | 203 ++++++++++++++++++
> 2 files changed, 204 insertions(+)
> create mode 100755 tools/testing/selftests/net/bridge_vlan_dump.sh

Hi Danielle,

I'm wondering if you could consider running running shellcheck over this
and cleaning things up a little.

I see SC2086 which I think can be trivially addressed.
And SC2329, which I think would be best ignored using #shellcheck disable=SC2086

Thanks!