[v2,3/6] net/mlx5: check extended metadata for mark modififcation
Checks
Commit Message
The MODIFY_FIELD RTE action requires the extended metadata support
in order to manipulate on MARK register. Check if it is supported
and reject the MODIFY_FIELD action if it is not.
Fixes: 641dbe4fb0 ("net/mlx5: support modify field flow action")
Cc: stable@dpdk.org
Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
---
drivers/net/mlx5/mlx5_flow_dv.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
Comments
> -----Original Message-----
> From: Alexander Kozyrev <akozyrev@nvidia.com>
> Sent: Wednesday, March 24, 2021 17:05
> To: dev@dpdk.org
> Cc: Raslan Darawsheh <rasland@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Matan Azrad <matan@nvidia.com>; Ori Kam
> <orika@nvidia.com>; stable@dpdk.org
> Subject: [PATCH v2 3/6] net/mlx5: check extended metadata for mark
> modififcation
>
> The MODIFY_FIELD RTE action requires the extended metadata support in
> order to manipulate on MARK register. Check if it is supported and reject the
> MODIFY_FIELD action if it is not.
>
> Fixes: 641dbe4fb0 ("net/mlx5: support modify field flow action")
> Cc: stable@dpdk.org
>
> Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
@@ -4542,7 +4542,8 @@ mlx5_flow_item_field_width(enum rte_flow_field_id field)
/**
* Validate the generic modify field actions.
- *
+ * @param[in] dev
+ * Pointer to the rte_eth_dev structure.
* @param[in] action_flags
* Holds the actions detected until now.
* @param[in] action
@@ -4557,11 +4558,14 @@ mlx5_flow_item_field_width(enum rte_flow_field_id field)
* a negative errno value otherwise and rte_errno is set.
*/
static int
-flow_dv_validate_action_modify_field(const uint64_t action_flags,
+flow_dv_validate_action_modify_field(struct rte_eth_dev *dev,
+ const uint64_t action_flags,
const struct rte_flow_action *action,
struct rte_flow_error *error)
{
int ret = 0;
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *config = &priv->config;
const struct rte_flow_action_modify_field *action_modify_field =
action->conf;
uint32_t dst_width =
@@ -4640,6 +4644,15 @@ flow_dv_validate_action_modify_field(const uint64_t action_flags,
NULL,
"modifications of an arbitrary"
" place in a packet 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 ||
+ !mlx5_flow_ext_mreg_supported(dev))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION, action,
+ "cannot modify mark without extended"
+ " metadata register support");
+ }
if (action_modify_field->operation != RTE_FLOW_MODIFY_SET)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION,
@@ -6914,9 +6927,10 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL, "modify field action "
"is not supported for group 0");
- ret = flow_dv_validate_action_modify_field(action_flags,
- actions,
- error);
+ ret = flow_dv_validate_action_modify_field(dev,
+ action_flags,
+ actions,
+ error);
if (ret < 0)
return ret;
/* Count all modify-header actions as one action. */