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diff --git a/src/plugins/adl/adl.h b/src/plugins/adl/adl.h
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+/*
+ * Copyright (c) 2016,2020 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 __vnet_adl_h__
+#define __vnet_adl_h__
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+
+typedef enum {
+ VNET_ADL_IP4,
+ VNET_ADL_IP6,
+ VNET_ADL_DEFAULT,
+ VNET_N_ADLS,
+} vnet_adl_t;
+
+typedef enum {
+ /* First check src address against allowlist */
+ IP4_RX_ADL_ALLOWLIST,
+ IP6_RX_ADL_ALLOWLIST,
+ DEFAULT_RX_ADL_ALLOWLIST,
+
+ /* Pkts not otherwise dropped go to xxx-input */
+ IP4_RX_ADL_INPUT,
+ IP6_RX_ADL_INPUT,
+ DEFAULT_RX_ADL_INPUT,
+
+ /* Going, going, gone... */
+ RX_ADL_DROP,
+
+ ADL_RX_N_FEATURES,
+} adl_feature_type_t;
+
+typedef struct {
+ vnet_config_main_t config_main;
+ u32 * config_index_by_sw_if_index;
+} adl_config_main_t;
+
+typedef struct {
+ u32 fib_index;
+} adl_config_data_t;
+
+typedef struct {
+ adl_config_main_t adl_config_mains[VNET_N_ADLS];
+
+ u16 msg_id_base;
+
+ /* convenience */
+ vlib_main_t * vlib_main;
+ vnet_main_t * vnet_main;
+} adl_main_t;
+
+extern adl_main_t adl_main;
+
+extern vlib_node_registration_t adl_input_node;
+
+int adl_interface_enable_disable (u32 sw_if_index, int enable_disable);
+
+typedef struct {
+ u32 sw_if_index;
+ u8 ip4;
+ u8 ip6;
+ u8 default_adl;
+ u32 fib_id;
+} adl_allowlist_enable_disable_args_t;
+
+int adl_allowlist_enable_disable (adl_allowlist_enable_disable_args_t *a);
+
+/* Plugin private opaque union type */
+typedef struct {
+ /* MUST be in sync with .../src/vnet/buffer.h */
+ u32 sw_if_index[VLIB_N_RX_TX];
+ i16 l2_hdr_offset;
+ i16 l3_hdr_offset;
+ i16 l4_hdr_offset;
+ u8 feature_arc_index;
+ u8 dont_waste_me;
+ /* end of must be in sync with .../src/vnet/buffer.h */
+ union
+ {
+ /* COP - configurable junk filter(s) */
+ struct
+ {
+ /* Current configuration index. */
+ u32 current_config_index;
+ } adl;
+ };
+} adl_buffer_opaque_t;
+
+#define adl_buffer(b) ((adl_buffer_opaque_t *) (b)->opaque)
+
+#endif /* __vnet_adl_h__ */