[dpdk-dev] [PATCH 1/3] net/i40e: add support for MARK + RSS action in rte_flow

[Mesut Ali Ergin]

Currently, i40e Flow Director action parser only allows following nine
action combinations: (QUEUE, PASSTHRU, DROP, QUEUE + MARK, PASSTHRU +
MARK, DROP + MARK, QUEUE + FLAG, PASSTHRU + FLAG, DROP + FLAG)

Using the existing Cloud Filter profile on the NIC, it is possible to
add support for two more combinations as: (MARK + RSS, MARK + FLAG +
RSS)

Addition of these new combinations would allow more applications to
utilize DPDK rte_flow to implement hardware flow offloads with Intel
Ethernet 700 series network adapters, including but not limited to the
existing OVS DPDK partial hardware flow offload feature.

Signed-off-by: Mesut Ali Ergin <mesut.a.ergin at intel.com>
---
 drivers/net/i40e/i40e_flow.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index 5447e4e..d4d564f 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -3078,6 +3078,12 @@ i40e_flow_parse_fdir_action(struct rte_eth_dev *dev,
 	case RTE_FLOW_ACTION_TYPE_PASSTHRU:
 		filter->action.behavior = I40E_FDIR_PASSTHRU;
 		break;
+	case RTE_FLOW_ACTION_TYPE_MARK:
+		filter->action.behavior = I40E_FDIR_PASSTHRU;
+		mark_spec = act->conf;
+		filter->action.report_status = I40E_FDIR_REPORT_ID;
+		filter->soft_id = mark_spec->id;
+	break;
 	default:
 		rte_flow_error_set(error, EINVAL,
 				   RTE_FLOW_ERROR_TYPE_ACTION, act,
@@ -3090,13 +3096,36 @@ i40e_flow_parse_fdir_action(struct rte_eth_dev *dev,
 	NEXT_ITEM_OF_ACTION(act, actions, index);
 	switch (act->type) {
 	case RTE_FLOW_ACTION_TYPE_MARK:
+		if (!mark_spec) {
+			/* Double MARK actions requested */
+			rte_flow_error_set(error, EINVAL,
+			   RTE_FLOW_ERROR_TYPE_ACTION, act,
+			   "Invalid action.");
+			return -rte_errno;
+		}
 		mark_spec = act->conf;
 		filter->action.report_status = I40E_FDIR_REPORT_ID;
 		filter->soft_id = mark_spec->id;
 		break;
 	case RTE_FLOW_ACTION_TYPE_FLAG:
+		if (!mark_spec) {
+			/* MARK + FLAG not supported */
+			rte_flow_error_set(error, EINVAL,
+					   RTE_FLOW_ERROR_TYPE_ACTION, act,
+					   "Invalid action.");
+			return -rte_errno;
+		}
 		filter->action.report_status = I40E_FDIR_NO_REPORT_STATUS;
 		break;
+	case RTE_FLOW_ACTION_TYPE_RSS:
+		if (filter->action.behavior != I40E_FDIR_PASSTHRU) {
+			/* RSS filter won't be next if FDIR did not pass thru */
+			rte_flow_error_set(error, EINVAL,
+					   RTE_FLOW_ERROR_TYPE_ACTION, act,
+					   "Invalid action.");
+			return -rte_errno;
+		}
+		break;
 	case RTE_FLOW_ACTION_TYPE_END:
 		return 0;
 	default:
-- 
2.7.4