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diff --git a/extras/deprecated/plugins/gbp/gbp_learn.h b/extras/deprecated/plugins/gbp/gbp_learn.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_LEARN_H__
+#define __GBP_LEARN_H__
+
+#include <plugins/gbp/gbp.h>
+
+#include <vnet/util/throttle.h>
+
+/**
+ * The maximum learning rate per-hashed EP
+ */
+#define GBP_ENDPOINT_HASH_LEARN_RATE (1e-2)
+
+/**
+ * Grouping of global data for the GBP source EPG classification feature
+ */
+typedef struct gbp_learn_main_t_
+{
+  /**
+   * Next nodes for L2 output features
+   */
+  u32 gl_l2_input_feat_next[32];
+
+  /**
+   * logger - VLIB log class
+   */
+  vlib_log_class_t gl_logger;
+
+  /**
+   * throttles for the DP leanring
+   */
+  throttle_t gl_l2_throttle;
+  throttle_t gl_l3_throttle;
+} gbp_learn_main_t;
+
+extern gbp_learn_main_t gbp_learn_main;
+
+extern void gbp_learn_enable (u32 sw_if_index);
+extern void gbp_learn_disable (u32 sw_if_index);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */