[v3,4/5] net/i40e: enable flow query RSS

This patch enables flow query function to get the
configuration of the specified rule.

Signed-off-by: Chenxu Di <chenxux.di@intel.com>
---
 doc/guides/rel_notes/release_20_08.rst |  1 +
 drivers/net/i40e/i40e_flow.c           | 49 ++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
  

On 7/1/2020 4:24 PM, Chenxu Di wrote:
> This patch enables flow query function to get the
> configuration of the specified rule.
>
> Signed-off-by: Chenxu Di <chenxux.di@intel.com>
> ---
>   doc/guides/rel_notes/release_20_08.rst |  1 +
>   drivers/net/i40e/i40e_flow.c           | 49 ++++++++++++++++++++++++++
>   2 files changed, 50 insertions(+)
>
> diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst
> index 1252a337a..a7fb3136d 100644
> --- a/doc/guides/rel_notes/release_20_08.rst
> +++ b/doc/guides/rel_notes/release_20_08.rst
> @@ -90,6 +90,7 @@ New Features
>   
>     * Re-implemented get_fdir_info and get_fdir_stat in private API.
>     * Re-implemented set_gre_key_len in private API.
> +  * Added support for flow query RSS.
>   
>   * **Updated the Intel ixgbe driver.**
>   
> diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
> index 8f8df6fae..4186a5df2 100644
> --- a/drivers/net/i40e/i40e_flow.c
> +++ b/drivers/net/i40e/i40e_flow.c
> @@ -43,6 +43,10 @@ static int i40e_flow_destroy(struct rte_eth_dev *dev,
>   			     struct rte_flow_error *error);
>   static int i40e_flow_flush(struct rte_eth_dev *dev,
>   			   struct rte_flow_error *error);
> +static int i40e_flow_query(struct rte_eth_dev *dev,
> +			   struct rte_flow *flow,
> +			   const struct rte_flow_action *actions,
> +			   void *data, struct rte_flow_error *error);
>   static int
>   i40e_flow_parse_ethertype_pattern(struct rte_eth_dev *dev,
>   				  const struct rte_flow_item *pattern,
> @@ -129,6 +133,7 @@ const struct rte_flow_ops i40e_flow_ops = {
>   	.create = i40e_flow_create,
>   	.destroy = i40e_flow_destroy,
>   	.flush = i40e_flow_flush,
> +	.query = i40e_flow_query,
>   };
>   
>   static union i40e_filter_t cons_filter;
> @@ -5462,3 +5467,47 @@ i40e_flow_flush_rss_filter(struct rte_eth_dev *dev)
>   
>   	return ret;
>   }
> +
> +static int
> +i40e_flow_query(struct rte_eth_dev *dev __rte_unused,
> +		struct rte_flow *flow,
> +		const struct rte_flow_action *actions,
> +		void *data, struct rte_flow_error *error)
> +{
> +	struct i40e_rss_filter *rss_rule = (struct i40e_rss_filter *)flow->rule;
> +	enum rte_filter_type filter_type = flow->filter_type;
> +	struct rte_flow_action_rss *rss_conf = data;
> +
> +	if (!rss_rule) {
> +		rte_flow_error_set(error, EINVAL,
> +				   RTE_FLOW_ERROR_TYPE_HANDLE,
> +				   NULL, "Invalid rule");
> +		return -rte_errno;
> +	}
> +
> +	for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
> +		switch (actions->type) {
> +		case RTE_FLOW_ACTION_TYPE_VOID:
> +			break;
> +		case RTE_FLOW_ACTION_TYPE_RSS:
> +			if (filter_type != RTE_ETH_FILTER_HASH) {
> +				rte_flow_error_set(error, ENOTSUP,
> +						   RTE_FLOW_ERROR_TYPE_ACTION,
> +						   actions,
> +						   "action not supported");
> +				return -rte_errno;
> +			}
> +			rte_memcpy(rss_conf,
> +				   &rss_rule->rss_filter_info.conf,
> +				   sizeof(struct rte_flow_action_rss));
> +			break;
> +		default:
> +			return rte_flow_error_set(error, ENOTSUP,
> +						  RTE_FLOW_ERROR_TYPE_ACTION,
> +						  actions,
> +						  "action not supported");
> +		}
> +	}
> +
> +	return 0;
> +}


Acked-by: Jeff Guo <jia.guo@intel.com <mailto:jia.guo@intel.com>>