When RSS expand, if there is no expansion happened but completion
happened because user only input next protocol field instead of item
i.e, ether type == 0x8100 instead of VLAN, an extra flow is created with
missing item in order to filter traffic strictly.
However, after [1] and [2] the rte_flow_item_eth itself is enough to
filter out VLAN traffic, the VLAN item is not needed.
[1]: commit 09315fc838 ("ethdev: add VLAN attributes to ethernet and VLAN items")
[2]: commit 86b59a1af6 ("net/mlx5: support VLAN matching fields")
This redundant flow will cause failure in some scenarios on group 0 due
to they are the same FTE.
Fixes: fc2dd8dd49 ("ethdev: fix expand RSS flows")
Cc: stable@dpdk.org
Signed-off-by: Xiaoyu Min <jackmin@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
c1d397a67e