From 0588d64ffde32973a97ad87bdd7aec79613e90ce Mon Sep 17 00:00:00 2001 From: Alexander Kozyrev Date: Wed, 24 Mar 2021 15:04:36 +0000 Subject: [PATCH] net/mlx5: check extended metadata for mark modification The MODIFY_FIELD 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: 641dbe4fb053 ("net/mlx5: support modify field flow action") Cc: stable@dpdk.org Signed-off-by: Alexander Kozyrev Acked-by: Viacheslav Ovsiienko --- drivers/net/mlx5/mlx5_flow_dv.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c index a1e4e2e5df..f2bc3162c1 100644 --- a/drivers/net/mlx5/mlx5_flow_dv.c +++ b/drivers/net/mlx5/mlx5_flow_dv.c @@ -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. */ -- 2.20.1