From: Kiran Kumar K <kirankumark@marvell.com>
Date: Thu, 25 Jul 2019 09:03:45 +0000 (+0530)
Subject: ethdev: add AH key field to flow API
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=67f8d7b6203b1875342b2014a4e5b58283483df7;p=dpdk.git

ethdev: add AH key field to flow API

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

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 799086aeba..b032f2d433 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1277,6 +1277,19 @@ Matches a Internet Group Management Protocol (RFC 2236).
 - Default ``mask`` matches group_addr.
 
 
+Item: ``AH``
+^^^^^^^^^^^^
+
+Matches a IP Authentication Header (RFC 4302).
+
+- ``next_hdr``: next payload after AH.
+- ``payload_len``: total length of AH in 4B words.
+- ``reserved``: reserved bits.
+- ``spi``: security parameters index.
+- ``seq_num``: counter value increased by 1 on each packet sent.
+- Default ``mask`` matches spi.
+
+
 Actions
 ~~~~~~~
 
diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 2dfe88ca02..81a85b9951 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -82,6 +82,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
 			sizeof(struct rte_flow_item_pppoe_proto_id)),
 	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 350566cac8..bcfc06cdc7 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -484,6 +484,13 @@ 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,
 };
 
 /**
@@ -1376,6 +1383,30 @@ 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 4302
+ *
+ */
+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.
  *