[PATCH v2 3/4] ethdev: Add group action type to rte_flow

[Declan Doherty <declan.doherty@intel.com>]

Add group action type which defines a terminating action which
allows a matched flow to be redirect to a group. This allows logical
flow table hierarchies to be managed through rte_flow.

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
---
 doc/guides/prog_guide/rte_flow.rst | 23 +++++++++++++++++++++++
 lib/librte_ether/rte_flow.h        | 28 +++++++++++++++++++++++++++-
 2 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index ba7baf2e4..362231829 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1557,6 +1557,29 @@ set of overlay header type.
    | ``item type`` | Item type of tunnel end-point to decapsulate |
    +---------------+----------------------------------------------+
 
+
+Action: ``GROUP``
+^^^^^^^^^^^^^^^^^
+
+Redirects packets to a group on the current device.
+
+In a hierarchy of groups, which can be used to represent physical or logical
+flow tables on the device, this action allows the terminating action to be a
+group on that device.
+
+- Terminating by default.
+
+.. _table_rte_flow_action_group:
+
+.. table:: GROUP
+
+   +--------------+---------------------------------+
+   | Field        | Value                           |
+   +==============+=================================+
+   | ``id``       | Group ID to redirect packets to |
+   +--------------+---------------------------------+
+
+
 Negative types
 ~~~~~~~~~~~~~~
 
diff --git a/lib/librte_ether/rte_flow.h b/lib/librte_ether/rte_flow.h
index 4061a9cd4..55951b6ca 100644
--- a/lib/librte_ether/rte_flow.h
+++ b/lib/librte_ether/rte_flow.h
@@ -1043,7 +1043,18 @@ enum rte_flow_action_type {
 	 *
 	 * See struct rte_flow_action_vtep_decap.
 	 */
-	RTE_FLOW_ACTION_TYPE_VTEP_DECAP
+	RTE_FLOW_ACTION_TYPE_VTEP_DECAP,
+
+	/**
+	 * Redirects packets to the logical group of the current device.
+	 *
+	 * In a logical hierarchy of groups, which can be used to represent a
+	 * physical of logical chaining of flow tables, this action allows the
+	 * terminating action to be a logical group of the same device.
+	 *
+	 * See struct rte_flow_action_group.
+	 */
+	RTE_FLOW_ACTION_TYPE_GROUP
 };
 
 /**
@@ -1226,6 +1237,21 @@ struct rte_flow_action_vtep_decap {
 	 */
 };
 
+/**
+ * RTE_FLOW_ACTION_TYPE_GROUP
+ *
+ * Redirects packets to a group on the current device.
+ *
+ * In a hierarchy of groups, which can be used to represent physical or logical
+ * flow tables on the device, this action allows the terminating action to be a
+ * group on that device.
+ *
+ * Terminating by default.
+ */
+struct rte_flow_action_group {
+	uint32_t id;
+};
+
 /**
  * Definition of a single action.
  *
-- 
2.14.3