In legacy metadata mode the metadata register B is engaged to
handle the metadata item. In the ingress domain the hardware
supports the register setting only, the match on register B
is not supported.
Due to this limitation only the SET_META action can be supported
for the ingress flows, the META item should be rejected on
flow validation.
Fixes: 5f3541724e0 ("net/mlx5: fix flow META item validation")
Cc: sta...@dpdk.org
Signed-off-by: Viacheslav Ovsiienko <viachesl...@nvidia.com>
---
drivers/net/mlx5/mlx5_flow_dv.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 76696b7b62..131d5de586 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -1960,13 +1960,20 @@ flow_dv_validate_item_meta(struct rte_eth_dev *dev
__rte_unused,
"isn't supported");
if (reg != REG_A)
nic_mask.data = priv->sh->dv_meta_mask;
- } else if (attr->transfer) {
- return rte_flow_error_set(error, ENOTSUP,
+ } else {
+ if (attr->transfer)
+ return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"extended metadata feature "
"should be enabled when "
"meta item is requested "
"with e-switch mode ");
+ if (attr->ingress)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "match on metadata for ingress "
+ "is not supported in legacy "
+ "metadata mode");
}
if (!mask)
mask = &rte_flow_item_meta_mask;
--
2.18.1
