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diff --git a/src/plugins/nat/nat44-ei/nat44_ei.h b/src/plugins/nat/nat44-ei/nat44_ei.h
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+++ b/src/plugins/nat/nat44-ei/nat44_ei.h
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+/*
+ * Copyright (c) 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.
+ */
+/**
+ * @file nat44_ei.h
+ * NAT44 endpoint independent plugin declarations
+ */
+#ifndef __included_nat44_ei_h__
+#define __included_nat44_ei_h__
+
+int nat44_ei_plugin_enable ();
+
+void nat44_ei_plugin_disable ();
+
+/**
+ * @brief Delete specific NAT44 EI user and his sessions
+ *
+ * @param addr         IPv4 address
+ * @param fib_index    FIB table index
+ */
+int nat44_ei_user_del (ip4_address_t *addr, u32 fib_index);
+
+/**
+ * @brief Delete session for static mapping
+ *
+ * @param addr         IPv4 address
+ * @param fib_index    FIB table index
+ */
+void nat44_ei_static_mapping_del_sessions (snat_main_t *sm,
+					   snat_main_per_thread_data_t *tsm,
+					   snat_user_key_t u_key,
+					   int addr_only, ip4_address_t e_addr,
+					   u16 e_port);
+
+u32 nat44_ei_get_in2out_worker_index (ip4_header_t *ip0, u32 rx_fib_index0,
+				      u8 is_output);
+
+u32 nat44_ei_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip0,
+				      u32 rx_fib_index0, u8 is_output);
+
+/**
+ * @brief Set address and port assignment algorithm to default/standard
+ */
+void nat44_ei_set_alloc_default (void);
+
+/**
+ * @brief Set address and port assignment algorithm for MAP-E CE
+ *
+ * @param psid        Port Set Identifier value
+ * @param psid_offset number of offset bits
+ * @param psid_length length of PSID
+ */
+void nat44_ei_set_alloc_mape (u16 psid, u16 psid_offset, u16 psid_length);
+
+/**
+ * @brief Set address and port assignment algorithm for port range
+ *
+ * @param start_port beginning of the port range
+ * @param end_port   end of the port range
+ */
+void nat44_ei_set_alloc_range (u16 start_port, u16 end_port);
+
+#endif /* __included_nat44_ei_h__ */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */