[PATCH v2 1/4] ethdev: add meter color flow matching item

[Alexander Kozyrev <akozyrev@nvidia.com>]

Provide an ability to use a Color Marker set by a Meter
as a matching item in Flow API. The Color Marker reflects
the metering result by setting the metadata for a
packet to a particular codepoint: green, yellow or red.

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
---
 doc/guides/prog_guide/rte_flow.rst     |  7 +++++++
 doc/guides/rel_notes/release_22_07.rst |  4 ++++
 lib/ethdev/rte_flow.c                  |  1 +
 lib/ethdev/rte_flow.h                  | 24 ++++++++++++++++++++++++
 4 files changed, 36 insertions(+)

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 588914b231..018def1033 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1651,6 +1651,13 @@ Matches a PPP header.
 - ``proto_id``: PPP protocol identifier.
 - Default ``mask`` matches addr, ctrl, proto_id.
 
+Item: ``METER_COLOR``
+^^^^^^^^^^^^^^^^^^^^^
+
+Matches Color Marker set by a Meter.
+
+- ``color``: Metering color marker.
+
 Actions
 ~~~~~~~
 
diff --git a/doc/guides/rel_notes/release_22_07.rst b/doc/guides/rel_notes/release_22_07.rst
index 0ed4f92820..c1804bc74f 100644
--- a/doc/guides/rel_notes/release_22_07.rst
+++ b/doc/guides/rel_notes/release_22_07.rst
@@ -69,6 +69,10 @@ New Features
   Added an API which can get the number of in-flight packets in
   vhost async data path without using lock.
 
+* **Extended Metering and Marking support in the Flow API.**
+
+  * Added METER_COLOR item to match Color Marker set by a Meter.
+
 * **Updated Intel iavf driver.**
 
   * Added Tx QoS queue rate limitation support.
diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index 2c35a2f13e..07d7e998c0 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -161,6 +161,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
 			rte_flow_item_flex_conv),
 	MK_FLOW_ITEM(L2TPV2, sizeof(struct rte_flow_item_l2tpv2)),
 	MK_FLOW_ITEM(PPP, sizeof(struct rte_flow_item_ppp)),
+	MK_FLOW_ITEM(METER_COLOR, sizeof(struct rte_flow_item_meter_color)),
 };
 
 /** Generate flow_action[] entry. */
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index d8827dd184..75ec6621ac 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -671,6 +671,14 @@ enum rte_flow_item_type {
 	 * See struct rte_flow_item_gre_opt.
 	 */
 	RTE_FLOW_ITEM_TYPE_GRE_OPTION,
+
+	/**
+	 * Matches Meter Color Marker.
+	 *
+	 * See struct rte_flow_item_meter_color.
+	 */
+
+	RTE_FLOW_ITEM_TYPE_METER_COLOR,
 };
 
 /**
@@ -2201,6 +2209,22 @@ struct rte_flow_item_flex_conf {
 	uint32_t nb_outputs;
 };
 
+/**
+ * RTE_FLOW_ITEM_TYPE_METER_COLOR.
+ *
+ * Matches Color Marker set by a Meter.
+ */
+struct rte_flow_item_meter_color {
+	enum rte_color color; /**< Meter color marker. */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_METER_COLOR. */
+#ifndef __cplusplus
+static const struct rte_flow_item_meter_color rte_flow_item_meter_color_mask = {
+	.color = RTE_COLORS,
+};
+#endif
+
 /**
  * Action types.
  *
-- 
2.18.2