[HICN-574] Host stack plugin for VPP.

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18
Signed-off-by: Mauro Sardara <msardara@cisco.com>
Signed-off-by: Mauro <you@example.com>
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/hicn-plugin/src/network/cache_policies/cs_policy.h b/hicn-plugin/src/network/cache_policies/cs_policy.h
new file mode 100644
index 000000000..0bf745915
--- /dev/null
+++ b/hicn-plugin/src/network/cache_policies/cs_policy.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2017-2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __HICN_CS_POLICY_H__
+#define __HICN_CS_POLICY_H__
+
+#include "../hashtb.h"
+
+/**
+ * @file cs_policy.h
+ *
+ * This file provides the needed structures to implement a CS policy
+ */
+
+
+/*
+ * Structure
+ */
+typedef struct hicn_cs_policy_s
+{
+  u32 max;
+  u32 count;
+
+  /* Indexes to hashtable nodes forming CS LRU */
+  u32 head;
+  u32 tail;
+
+} hicn_cs_policy_t;
+
+/* Forward declaration */
+struct hicn_pit_cs_s;
+struct hicn_hash_node_s;
+struct hicn_pcs_entry_s;
+struct hicn_cs_policy_s;
+
+/**
+ * @brief Definition of the virtual functin table for a cache policy.
+ *
+ * A cache policy must implement all the following functions:
+ * - insert: add a new element
+ * - update: update the position of an existing element
+ * - dequeue: remove an element from the list
+ * - delete_get: return the next element that should be removed trim
+ * - flush: clean the cs
+ */
+typedef struct hicn_cs_policy_vft_s
+{
+  void (*hicn_cs_insert) (struct hicn_pit_cs_s * p,
+			  struct hicn_hash_node_s * node,
+			  struct hicn_pcs_entry_s * pcs,
+			  hicn_cs_policy_t * policy);
+
+  void (*hicn_cs_update) (struct hicn_pit_cs_s * p,
+			  struct hicn_hash_node_s * node,
+			  struct hicn_pcs_entry_s * pcs,
+			  hicn_cs_policy_t * policy);
+
+  void (*hicn_cs_dequeue) (struct hicn_pit_cs_s * p,
+			   struct hicn_hash_node_s * node,
+			   struct hicn_pcs_entry_s * pcs,
+			   hicn_cs_policy_t * policy);
+
+  void (*hicn_cs_delete_get) (struct hicn_pit_cs_s * p,
+			      hicn_cs_policy_t * policy,
+			      struct hicn_hash_node_s ** node,
+			      struct hicn_pcs_entry_s ** pcs,
+			      struct hicn_hash_entry_s ** hash_entry);
+
+  int (*hicn_cs_trim) (struct hicn_pit_cs_s * p, u32 * node_list, int sz,
+		       hicn_cs_policy_t * policy);
+
+  int (*hicn_cs_flush) (vlib_main_t * vm, struct hicn_pit_cs_s * p,
+			hicn_cs_policy_t * policy_state);
+} hicn_cs_policy_vft_t;
+
+
+
+#endif /* // __HICN_POLICY_H__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */