[PATCH 2/7] ethdev: add GTP item

[Beilei Xing <beilei.xing@intel.com>]

This patch adds GTP items to generic rte flow.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
---
 doc/guides/prog_guide/rte_flow.rst | 12 ++++++++++++
 lib/librte_ether/rte_flow.h        | 31 +++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 662a912..2843b71 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -955,6 +955,18 @@ Usage example, fuzzy match a TCPv4 packets:
    | 4     | END      |
    +-------+----------+
 
+Item: ``GTP``
+^^^^^^^^^^^^^^
+
+Matches a GTP header.
+
+- ``v_pt_rsv_flags``: version (3b), protocol type (1b), reserved (1b),
+  extension header flag (1b), sequence number flag (1b), N-PDU number flag(1b).
+- ``msg_type``: message type.
+- ``msg_len``: message length.
+- ``teid``: TEID.
+- Default ``mask`` matches teid only.
+
 Actions
 ~~~~~~~
 
diff --git a/lib/librte_ether/rte_flow.h b/lib/librte_ether/rte_flow.h
index bba6169..73305aa 100644
--- a/lib/librte_ether/rte_flow.h
+++ b/lib/librte_ether/rte_flow.h
@@ -309,6 +309,13 @@ enum rte_flow_item_type {
 	 * See struct rte_flow_item_fuzzy.
 	 */
 	RTE_FLOW_ITEM_TYPE_FUZZY,
+
+	/**
+	 * Matches a GTP header
+	 *
+	 * See struct rte_flow_item.
+	 */
+	RTE_FLOW_ITEM_TYPE_GTP,
 };
 
 /**
@@ -735,6 +742,30 @@ static const struct rte_flow_item_fuzzy rte_flow_item_fuzzy_mask = {
 #endif
 
 /**
+ * RTE_FLOW_ITEM_TYPE_GTP.
+ *
+ * Matches a GTP header.
+ */
+struct rte_flow_item_gtp {
+	/**
+	 * Version(2b), Protocol type(1b), Reserved(1b),
+	 * Extension header flag(1b),
+	 * Sequqnce number flag(1b),
+	 * N-PDU number flag(1b).
+	 */
+	uint8_t v_pt_rsv_flags;
+	uint8_t msg_type; /**< Message type */
+	rte_be16_t msg_len; /**< Message length */
+	rte_be32_t teid;
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_GTP. */
+#ifndef __cplusplus
+	static const struct rte_flow_item_gtp rte_flow_item_gtp_mask = {
+		.teid = RTE_BE32(0xffffffff),
+	};
+#endif
+/**
  * Matching pattern item definition.
  *
  * A pattern is formed by stacking items starting from the lowest protocol
-- 
2.5.5