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.
This redundant flow will cause faiure in some scenarios on group 0 due
to they are the same FTE.
Fixes: fc2dd8dd492f ("ethdev: fix expand RSS flows")
Cc: sta...@dpdk.org
[1]:
commit 09315fc83861 ("ethdev: add VLAN attributes to ethernet and
VLAN items")
[2]:
commit 86b59a1af671 ("net/mlx5: support VLAN matching fields")
Signed-off-by: Xiaoyu Min <jack...@nvidia.com>
---
drivers/net/mlx5/mlx5_flow.c | 16 ----------------
1 file changed, 16 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index c347f8130e..668c32cf51 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -385,22 +385,6 @@ mlx5_flow_expand_rss(struct mlx5_flow_expand_rss *buf,
size_t size,
}
node = *next_node ? &graph[*next_node] : NULL;
};
- /* no expanded flows but we have missed item, create one rule for it */
- if (buf->entries == 1 && missed != 0) {
- elt = 2;
- lsize += elt * sizeof(*item) + user_pattern_size;
- if (lsize <= size) {
- buf->entry[buf->entries].priority = 1;
- buf->entry[buf->entries].pattern = addr;
- buf->entries++;
- flow_items[0].type = missed_item.type;
- flow_items[1].type = RTE_FLOW_ITEM_TYPE_END;
- rte_memcpy(addr, buf->entry[0].pattern,
- user_pattern_size);
- addr = (void *)(((uintptr_t)addr) + user_pattern_size);
- rte_memcpy(addr, flow_items, elt * sizeof(*item));
- }
- }
return lsize;
}
--
2.31.0
