From: Kiran Kumar K <kirankum...@marvell.com>

Add new rte_flow_item_ah in order to match the Authentication Header
based on RFC 2402.

Signed-off-by: Kiran Kumar K <kirankum...@marvell.com>
---
 lib/librte_ethdev/rte_flow.c |  1 +
 lib/librte_ethdev/rte_flow.h | 31 +++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 4dee4f9c2..44aa9f973 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -77,6 +77,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = 
{
        MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
        MK_FLOW_ITEM(NSH, sizeof(struct rte_flow_item_nsh)),
        MK_FLOW_ITEM(IGMP, sizeof(struct rte_flow_item_igmp)),
+       MK_FLOW_ITEM(AH, sizeof(struct rte_flow_item_ah)),
 };
 
 /** Generate flow_action[] entry. */
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index ce8072613..4c137708e 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -449,6 +449,13 @@ enum rte_flow_item_type {
         */
        RTE_FLOW_ITEM_TYPE_IGMP,
 
+       /**
+        * Matches IP Authentication Header (AH).
+        * See struct rte_flow_item_ah.
+        *
+        */
+       RTE_FLOW_ITEM_TYPE_AH,
+
 };
 
 /**
@@ -1284,6 +1291,30 @@ static const struct rte_flow_item_igmp 
rte_flow_item_igmp_mask = {
 };
 #endif
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * RTE_FLOW_ITEM_TYPE_AH
+ *
+ * Match IP Authentication Header (AH), RFC 2402
+ *
+ */
+struct rte_flow_item_ah {
+       uint32_t next_hdr:8;
+       uint32_t payload_len:8;
+       uint32_t reserved:16;
+       uint32_t spi;
+       uint32_t seq_num;
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_AH. */
+#ifndef __cplusplus
+static const struct rte_flow_item_ah rte_flow_item_ah_mask = {
+       .spi = 0xffffffff,
+};
+#endif
+
 /**
  * Matching pattern item definition.
  *
-- 
2.17.1

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