Modification of the 802.1Q Tag Identificator, VXLAN Network
Identificator or GENEVE Network Identificator is not supported.
Reject attempt to modify these fields via the MODIFY_FIELD
action and document this mlx5 driver limitation.
Fixes: 641dbe4fb0 ("net/mlx5: support modify field flow action")
Cc: sta...@dpdk.org
Signed-off-by: Alexander Kozyrev <akozy...@nvidia.com>
---
doc/guides/nics/mlx5.rst | 1 +
drivers/net/mlx5/mlx5_flow_dv.c | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index a2cfc51b2a..92369fa5ee 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -383,6 +383,7 @@ Limitations
- Supports the 'set' operation only for
``RTE_FLOW_ACTION_TYPE_MODIFY_FIELD`` action.
- Modification of an arbitrary place in a packet via the special
``RTE_FLOW_FIELD_START`` Field ID is not supported.
+ - Modification of the 802.1Q Tag, VXLAN Network or GENEVE Network ID's is
not supported.
- Encapsulation levels are not supported, can modify outermost header fields
only.
- Offsets must be 32-bits aligned, cannot skip past the boundary of a field.
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index ecabf63f53..223a7d0e36 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -4650,6 +4650,27 @@ flow_dv_validate_action_modify_field(struct rte_eth_dev
*dev,
NULL,
"modifications of an arbitrary"
" place in a packet is not supported");
+ if (action_modify_field->dst.field == RTE_FLOW_FIELD_VLAN_TYPE ||
+ action_modify_field->src.field == RTE_FLOW_FIELD_VLAN_TYPE)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "modifications of the 802.1Q Tag"
+ " Identifier is not supported");
+ if (action_modify_field->dst.field == RTE_FLOW_FIELD_VXLAN_VNI ||
+ action_modify_field->src.field == RTE_FLOW_FIELD_VXLAN_VNI)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "modifications of the VXLAN Network"
+ " Identifier is not supported");
+ if (action_modify_field->dst.field == RTE_FLOW_FIELD_GENEVE_VNI ||
+ action_modify_field->src.field == RTE_FLOW_FIELD_GENEVE_VNI)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "modifications of the GENEVE Network"
+ " Identifier is not supported");
if (action_modify_field->dst.field == RTE_FLOW_FIELD_MARK ||
action_modify_field->src.field == RTE_FLOW_FIELD_MARK) {
if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
--
2.24.1
