From 7cd048321d1d991dd47ddb54143f7dc701ac116a Mon Sep 17 00:00:00 2001
From: Beilei Xing <beilei.xing@intel.com>
Date: Thu, 30 Mar 2017 16:29:51 +0800
Subject: [PATCH] ethdev: add MPLS and GRE flow API items

This patch adds MPLS and GRE items to generic rte flow.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 doc/guides/prog_guide/rte_flow.rst | 21 ++++++++++--
 lib/librte_ether/rte_flow.h        | 51 ++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 2 deletions(-)

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 3bf8871312..5ee045ee81 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -187,8 +187,8 @@ Pattern item
 Pattern items fall in two categories:
 
 - Matching protocol headers and packet data (ANY, RAW, ETH, VLAN, IPV4,
-  IPV6, ICMP, UDP, TCP, SCTP, VXLAN and so on), usually associated with a
-  specification structure.
+  IPV6, ICMP, UDP, TCP, SCTP, VXLAN, MPLS, GRE and so on), usually
+  associated with a specification structure.
 
 - Matching meta-data or affecting pattern processing (END, VOID, INVERT, PF,
   VF, PORT and so on), often without a specification structure.
@@ -863,6 +863,23 @@ Matches a VXLAN header (RFC 7348).
 - ``rsvd1``: reserved, normally 0x00.
 - Default ``mask`` matches VNI only.
 
+Item: ``MPLS``
+^^^^^^^^^^^^^^
+
+Matches a MPLS header.
+
+- ``label_tc_s_ttl``: label, TC, Bottom of Stack and TTL.
+- Default ``mask`` matches label only.
+
+Item: ``GRE``
+^^^^^^^^^^^^^^
+
+Matches a GRE header.
+
+- ``c_rsvd0_ver``: checksum, reserved 0 and version.
+- ``protocol``: protocol type.
+- Default ``mask`` matches protocol only.
+
 Actions
 ~~~~~~~
 
diff --git a/lib/librte_ether/rte_flow.h b/lib/librte_ether/rte_flow.h
index 171a5698ee..8013ecab2d 100644
--- a/lib/librte_ether/rte_flow.h
+++ b/lib/librte_ether/rte_flow.h
@@ -282,6 +282,20 @@ enum rte_flow_item_type {
 	 * See struct rte_flow_item_nvgre.
 	 */
 	RTE_FLOW_ITEM_TYPE_NVGRE,
+
+	/**
+	 * Matches a MPLS header.
+	 *
+	 * See struct rte_flow_item_mpls.
+	 */
+	RTE_FLOW_ITEM_TYPE_MPLS,
+
+	/**
+	 * Matches a GRE header.
+	 *
+	 * See struct rte_flow_item_gre.
+	 */
+	RTE_FLOW_ITEM_TYPE_GRE,
 };
 
 /**
@@ -598,6 +612,43 @@ struct rte_flow_item_nvgre {
 	uint8_t flow_id; /**< Flow ID. */
 };
 
+/**
+ * RTE_FLOW_ITEM_TYPE_MPLS.
+ *
+ * Matches a MPLS header.
+ */
+struct rte_flow_item_mpls {
+	/**
+	 * Label (20b), TC (3b), Bottom of Stack (1b).
+	 */
+	uint8_t label_tc_s[3];
+	uint8_t ttl; /** Time-to-Live. */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_MPLS. */
+static const struct rte_flow_item_mpls rte_flow_item_mpls_mask = {
+	.label_tc_s = "\xff\xff\xf0",
+};
+
+/**
+ * RTE_FLOW_ITEM_TYPE_GRE.
+ *
+ * Matches a GRE header.
+ */
+struct rte_flow_item_gre {
+	/**
+	 * Checksum (1b), reserved 0 (12b), version (3b).
+	 * Refer to RFC 2784.
+	 */
+	uint16_t c_rsvd0_ver;
+	uint16_t protocol; /**< Protocol type. */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_GRE. */
+static const struct rte_flow_item_gre rte_flow_item_gre_mask = {
+	.protocol = 0xffff,
+};
+
 /**
  * Matching pattern item definition.
  *