[dpdk-dev] [PATCH v2 1/4] ethdev: add GRE key field to flow API

[Xiaoyu Min <jackmin@mellanox.com>]

Add new rte_flow_item_gre_key in order to match the optional key field.

Signed-off-by: Xiaoyu Min <jackmin@mellanox.com>
---
 doc/guides/prog_guide/rte_flow.rst | 8 ++++++++
 lib/librte_ethdev/rte_flow.c       | 1 +
 lib/librte_ethdev/rte_flow.h       | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index a34d012e55..f4b7baa3c3 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -980,6 +980,14 @@ Matches a GRE header.
 - ``protocol``: protocol type.
 - Default ``mask`` matches protocol only.
 
+Item: ``GRE_KEY``
+^^^^^^^^^^^^^^^^^
+
+Matches a GRE key field.
+This should be preceded by item ``GRE``
+
+- Value to be matched is a big-endian 32 bit integer
+
 Item: ``FUZZY``
 ^^^^^^^^^^^^^^^
 
diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 3277be1edb..f3e56d0bbe 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -55,6 +55,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
 	MK_FLOW_ITEM(NVGRE, sizeof(struct rte_flow_item_nvgre)),
 	MK_FLOW_ITEM(MPLS, sizeof(struct rte_flow_item_mpls)),
 	MK_FLOW_ITEM(GRE, sizeof(struct rte_flow_item_gre)),
+	MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
 	MK_FLOW_ITEM(FUZZY, sizeof(struct rte_flow_item_fuzzy)),
 	MK_FLOW_ITEM(GTP, sizeof(struct rte_flow_item_gtp)),
 	MK_FLOW_ITEM(GTPC, sizeof(struct rte_flow_item_gtp)),
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index f3a8fb103f..5d3702a44c 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -289,6 +289,13 @@ enum rte_flow_item_type {
 	 */
 	RTE_FLOW_ITEM_TYPE_GRE,
 
+	/**
+	 * Matches a GRE optional key field.
+	 *
+	 * The value should a big-endian 32bit integer.
+	 */
+	RTE_FLOW_ITEM_TYPE_GRE_KEY,
+
 	/**
 	 * [META]
 	 *
-- 
2.21.0