GBP V2

[vpp.git] / src / plugins / gbp / gbp_contract.h

diff --git a/src/plugins/gbp/gbp_contract.h b/src/plugins/gbp/gbp_contract.h
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+/*
+ * Copyright (c) 2018 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 __GBP_CONTRACT_H__
+#define __GBP_CONTRACT_H__
+
+#include <plugins/gbp/gbp_types.h>
+
+/**
+ * The key for an Contract
+ */
+typedef struct gbp_contract_key_t_
+{
+  union
+  {
+    struct
+    {
+      /**
+       * source and destination EPGs for which the ACL applies
+       */
+      epg_id_t gck_src;
+      epg_id_t gck_dst;
+    };
+    u64 as_u64;
+  };
+} gbp_contract_key_t;
+
+/**
+ * A Group Based Policy Contract.
+ *  Determines the ACL that applies to traffic pass between two endpoint groups
+ */
+typedef struct gbp_contract_t_
+{
+  /**
+   * source and destination EPGs
+   */
+  gbp_contract_key_t gc_key;
+
+  /**
+   * The ACL to apply for packets from the source to the destination EPG
+   */
+  u32 gc_acl_index;;
+} gbp_contract_t;
+
+/**
+ * EPG src,dst pair to ACL mapping table, aka contract DB
+ */
+typedef struct gbp_contract_db_t_
+{
+  /**
+   * We can form a u64 key from the pair, so use a simple hash table
+   */
+  uword *gc_hash;
+} gbp_contract_db_t;
+
+extern void gbp_contract_update (epg_id_t src_epg,
+                                epg_id_t dst_epg, u32 acl_index);
+extern void gbp_contract_delete (epg_id_t src_epg, epg_id_t dst_epg);
+
+typedef int (*gbp_contract_cb_t) (gbp_contract_t * gbpe, void *ctx);
+extern void gbp_contract_walk (gbp_contract_cb_t bgpe, void *ctx);
+
+
+/**
+ * DP functions and databases
+ */
+extern gbp_contract_db_t gbp_contract_db;
+
+always_inline u32
+gbp_acl_lookup (gbp_contract_key_t * key)
+{
+  uword *p;
+
+  p = hash_get (gbp_contract_db.gc_hash, key->as_u64);
+
+  if (NULL != p)
+    return (p[0]);
+
+  return (~0);
+}
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */