[dpdk-dev] [PATCH 3/4] ethdev: support PPPoL2TPv2oUDP RSS Hash

[Jie Wang]

Add flow pattern items, RSS offload types and header formats
of L2TPv2 and PPP.

Signed-off-by: Wenjun Wu <wenjun1.wu at intel.com>
Signed-off-by: Jie Wang <jie1x.wang at intel.com>
---
 lib/ethdev/rte_flow.c |  2 +
 lib/ethdev/rte_flow.h | 99 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+)

diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index 8cb7a069c8..307fbc3abe 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -98,6 +98,8 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
 	MK_FLOW_ITEM(PFCP, sizeof(struct rte_flow_item_pfcp)),
 	MK_FLOW_ITEM(ECPRI, sizeof(struct rte_flow_item_ecpri)),
 	MK_FLOW_ITEM(GENEVE_OPT, sizeof(struct rte_flow_item_geneve_opt)),
+	MK_FLOW_ITEM(L2TPV2, sizeof(struct rte_flow_item_l2tpv2)),
+	MK_FLOW_ITEM(PPP, sizeof(struct rte_flow_item_ppp)),
 	MK_FLOW_ITEM(INTEGRITY, sizeof(struct rte_flow_item_integrity)),
 	MK_FLOW_ITEM(CONNTRACK, sizeof(uint32_t)),
 };
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 70f455d47d..93205b7d1e 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -554,6 +554,20 @@ enum rte_flow_item_type {
 	 */
 	RTE_FLOW_ITEM_TYPE_GENEVE_OPT,
 
+	/**
+	 * Matches L2TPV2 Header.
+	 *
+	 * See struct rte_flow_item_l2tpv2.
+	 */
+	RTE_FLOW_ITEM_TYPE_L2TPV2,
+
+	/**
+	 * Matches PPP Header.
+	 *
+	 * See struct rte_flow_item_ppp.
+	 */
+	RTE_FLOW_ITEM_TYPE_PPP,
+
 	/**
 	 * [META]
 	 *
@@ -1799,6 +1813,91 @@ static const struct rte_flow_item_conntrack rte_flow_item_conntrack_mask = {
 };
 #endif
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ * RTE_FLOW_ITEM_TYPE_L2TPV2
+ *
+ * Matches L2TPv2 Header
+ */
+RTE_STD_C11
+struct rte_flow_item_l2tpv2 {
+	rte_be16_t flags_version;   /**< flag(12)  version(2). version must be 2 */
+	union{
+		struct{
+			rte_be16_t length;  /**< length(16) */
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t ns_nr;   /**< Ns(16) + Nr(16) */
+			rte_be32_t offset;  /**< offset size(16) + offset padding(16) */
+		} type1;
+		struct{
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t ns_nr;   /**< Ns(16) + Nr(16) */
+			rte_be32_t offset;  /**< offset size(16) + offset padding(16) */
+		} type2;
+		struct{
+			rte_be16_t length;  /**< length(16) */
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t offset;  /**< offset size(16) + offset padding(16) */
+		} type3;
+		struct{
+			rte_be16_t length;  /**< length(16) */
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t ns_nr;   /**< Ns(16) + Nr(16) */
+		} type4;
+		struct{
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t offset;  /**< offset size(16) + offset padding(16) */
+		} type5;
+		struct{
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+			rte_be32_t ns_nr;   /**< Ns(16) + Nr(16) */
+		} type6;
+		struct{
+			rte_be16_t length;  /**< length(16) */
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+		} type7;
+		struct{
+			rte_be16_t tunnel_id;   /**< tunnel id(16) */
+			rte_be16_t session_id;  /**< session id(16) */
+		} type8;
+	};
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_L2TPV2. */
+#ifndef __cplusplus
+static const struct rte_flow_item_l2tpv2 rte_flow_item_l2tpv2_mask = {
+	.flags_version = 0xffff,
+};
+#endif
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ * RTE_FLOW_ITEM_TYPE_PPP
+ *
+ * Matches PPP Header
+ */
+struct rte_flow_item_ppp {
+	rte_be16_t pppaddr_ctrl; /**< ppp address(8) + control(8) */
+	rte_be16_t pppproto_id; /**< ppp protocol id(16) */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_PPP. */
+#ifndef __cplusplus
+static const struct rte_flow_item_ppp rte_flow_item_ppp_mask = {
+	.pppaddr_ctrl = 0xffff,
+	.pppproto_id = 0xffff,
+};
+#endif
+
 /**
  * Matching pattern item definition.
  *
-- 
2.25.1