adl: move allow/deny list function to plugin

Provide binary API compatibility support for the "cop" APIs until vpp
21.01.

Change the deprecation date in map.api to vpp 21.01.

Type: refactor
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I0e60d96de4ae9ae4448f134cf257934126f3b760

12 files changed, 2042 insertions, 0 deletions

diff --git a/src/plugins/adl/CMakeLists.txt b/src/plugins/adl/CMakeLists.txt
new file mode 100644
index 00000000000..a1a61be4a5c
--- /dev/null
+++ b/src/plugins/adl/CMakeLists.txt
@@ -0,0 +1,31 @@
+# Copyright (c) 2020 Cisco Systems 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.
+
+add_vpp_plugin(adl
+  SOURCES
+  adl_api.c
+  adl.c
+  adl.h
+  ip4_allowlist.c
+  ip6_allowlist.c
+  node.c
+
+  MULTIARCH_SOURCES
+  node.c
+
+  API_FILES
+  adl.api
+
+  API_TEST_SOURCES
+  adl_test.c
+)
diff --git a/src/plugins/adl/FEATURE.yaml b/src/plugins/adl/FEATURE.yaml
new file mode 100644
index 00000000000..bd8de2a409f
--- /dev/null
+++ b/src/plugins/adl/FEATURE.yaml
@@ -0,0 +1,11 @@
+---
+name: ADL
+maintainer: Dave Barach <dave@barachs.net>
+features:
+  - v4, v6 non-default FIB src-address lookup
+  - Drop packets which don't hit a receive adjacency
+  - Not widely used
+
+description: "A very simple / fast source-address allow/deny list feature"
+state: experimental
+properties: [API, CLI, MULTITHREAD]
diff --git a/src/plugins/adl/adl.api b/src/plugins/adl/adl.api
new file mode 100644
index 00000000000..cbbb026a77c
--- /dev/null
+++ b/src/plugins/adl/adl.api
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+option version = "0.0.1";
+
+import "vnet/interface_types.api";
+
+ /** \brief adl: enable/disable filtration features on an interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param sw_if_inded - desired interface
+    @param enable_disable - 1 => enable, 0 => disable
+*/
+
+autoreply define adl_interface_enable_disable
+{
+  u32 client_index;
+  u32 context;
+  vl_api_interface_index_t sw_if_index;
+  bool enable_disable;
+};
+
+/** \brief adl: enable/disable allow list filtration features on an interface
+    Note: the supplied fib_id must match in order to remove the feature!
+
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param sw_if_index - interface handle, physical interfaces only
+    @param fib_id - fib identifier for the allow/deny fib
+    @param ip4 - 1 => enable ip4 filtration, 0=> disable ip4 filtration
+    @param ip6 - 1 => enable ip6 filtration, 0=> disable ip6 filtration
+    @param default_adl -  1 => enable non-ip4, non-ip6 filtration
+                          0 => disable it
+*/
+
+autoreply define adl_allowlist_enable_disable
+{
+  u32 client_index;
+  u32 context;
+  vl_api_interface_index_t sw_if_index;
+  u32 fib_id;
+  bool ip4;
+  bool ip6;
+  bool default_adl;
+};
+
+ /*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/adl/adl.c b/src/plugins/adl/adl.c
new file mode 100644
index 00000000000..832bfd4a982
--- /dev/null
+++ b/src/plugins/adl/adl.c
@@ -0,0 +1,417 @@
+/*
+ * 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.
+ */
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+#include <plugins/adl/adl.h>
+
+adl_main_t adl_main;
+
+static clib_error_t *
+adl_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
+{
+  adl_main_t *am = &adl_main;
+  adl_config_data_t _data, *data = &_data;
+  vlib_main_t *vm = am->vlib_main;
+  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);;
+  adl_config_main_t *acm;
+  int address_family;
+  u32 ci, default_next;
+
+  clib_memset (data, 0, sizeof (*data));
+
+  /*
+   * Ignore local interface, pg interfaces. $$$ need a #define for the
+   * first "real" interface. The answer is 5 at the moment.
+   */
+  if (hi->dev_class_index == vnet_local_interface_device_class.index)
+    return 0;
+
+  for (address_family = VNET_ADL_IP4; address_family < VNET_N_ADLS;
+       address_family++)
+    {
+      acm = &am->adl_config_mains[address_family];
+
+      /*
+       * Once-only code to initialize the per-address-family
+       * adl feature subgraphs.
+       * Since the (single) start-node, adl-input, must be able
+       * to push pkts into three separate subgraphs, we
+       * use a unified adl_feature_type_t enumeration.
+       */
+
+      if (!(acm->config_main.node_index_by_feature_index))
+	{
+	  switch (address_family)
+	    {
+	    case VNET_ADL_IP4:
+	      {
+		static char *start_nodes[] = { "adl-input" };
+		static char *feature_nodes[] = {
+		  [IP4_RX_ADL_ALLOWLIST] = "ip4-adl-allowlist",
+		  [IP4_RX_ADL_INPUT] = "ip4-input",
+		};
+
+		vnet_config_init (vm, &acm->config_main,
+				  start_nodes, ARRAY_LEN (start_nodes),
+				  feature_nodes, ARRAY_LEN (feature_nodes));
+	      }
+	      break;
+	    case VNET_ADL_IP6:
+	      {
+		static char *start_nodes[] = { "adl-input" };
+		static char *feature_nodes[] = {
+		  [IP6_RX_ADL_ALLOWLIST] = "ip6-adl-allowlist",
+		  [IP6_RX_ADL_INPUT] = "ip6-input",
+		};
+		vnet_config_init (vm, &acm->config_main,
+				  start_nodes, ARRAY_LEN (start_nodes),
+				  feature_nodes, ARRAY_LEN (feature_nodes));
+	      }
+	      break;
+
+	    case VNET_ADL_DEFAULT:
+	      {
+		static char *start_nodes[] = { "adl-input" };
+		static char *feature_nodes[] = {
+		  [DEFAULT_RX_ADL_ALLOWLIST] = "default-adl-allowlist",
+		  [DEFAULT_RX_ADL_INPUT] = "ethernet-input",
+		};
+		vnet_config_init (vm, &acm->config_main,
+				  start_nodes, ARRAY_LEN (start_nodes),
+				  feature_nodes, ARRAY_LEN (feature_nodes));
+	      }
+	      break;
+
+	    default:
+	      clib_warning ("bug");
+	      break;
+	    }
+	}
+      vec_validate_init_empty (acm->config_index_by_sw_if_index, sw_if_index,
+			       ~0);
+
+      ci = acm->config_index_by_sw_if_index[sw_if_index];
+
+      /* Create a sensible initial config: send pkts to xxx-input */
+      if (address_family == VNET_ADL_IP4)
+	default_next = IP4_RX_ADL_INPUT;
+      else if (address_family == VNET_ADL_IP6)
+	default_next = IP6_RX_ADL_INPUT;
+      else
+	default_next = DEFAULT_RX_ADL_INPUT;
+
+      if (is_add)
+	ci = vnet_config_add_feature (vm, &acm->config_main,
+				      ci, default_next, data, sizeof (*data));
+      else
+	{
+	  /* If the feature was actually configured */
+	  if (ci != ~0)
+	    {
+	      ci = vnet_config_del_feature (vm, &acm->config_main,
+					    ci, default_next, data,
+					    sizeof (*data));
+	    }
+	}
+
+      acm->config_index_by_sw_if_index[sw_if_index] = ci;
+    }
+  return 0;
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (adl_sw_interface_add_del);
+
+static clib_error_t *
+adl_init (vlib_main_t * vm)
+{
+  adl_main_t *cm = &adl_main;
+
+  cm->vlib_main = vm;
+  cm->vnet_main = vnet_get_main ();
+
+  /*
+   * Setup the packet generator so we can inject ethernet
+   * frames into this node
+   */
+  ethernet_setup_node (vm, adl_input_node.index);
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_INIT_FUNCTION (adl_init) =
+{
+  .runs_after = VLIB_INITS ("ip4_allowlist_init", "ip6_allowlist_init"),
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VNET_FEATURE_INIT (adl, static) =
+{
+  .arc_name = "device-input",
+  .node_name = "adl-input",
+  .runs_before = VNET_FEATURES ("ethernet-input"),
+};
+/* *INDENT-ON */
+
+int adl_interface_enable_disable (u32 sw_if_index, int enable_disable)
+{
+  /*
+   * Redirect pkts from the driver to the adl node.
+   */
+  vnet_feature_enable_disable ("device-input", "adl-input",
+			       sw_if_index, enable_disable, 0, 0);
+  return 0;
+}
+
+static clib_error_t *
+adl_enable_disable_command_fn (vlib_main_t * vm,
+                                unformat_input_t * input,
+                                vlib_cli_command_t * cmd)
+{
+  adl_main_t * cm = &adl_main;
+  u32 sw_if_index = ~0;
+  int enable_disable = 1;
+
+  int rv;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
+    if (unformat (input, "disable"))
+      enable_disable = 0;
+    else if (unformat (input, "%U", unformat_vnet_sw_interface,
+                       cm->vnet_main, &sw_if_index))
+      ;
+    else
+      break;
+  }
+
+  if (sw_if_index == ~0)
+    return clib_error_return (0, "Please specify an interface...");
+
+  rv = adl_interface_enable_disable (sw_if_index, enable_disable);
+
+  switch(rv) {
+  case 0:
+    break;
+
+  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+    return clib_error_return
+      (0, "Invalid interface, only works on physical ports");
+    break;
+
+  case VNET_API_ERROR_UNIMPLEMENTED:
+    return clib_error_return (0, "Device driver doesn't support redirection");
+    break;
+
+  default:
+    return clib_error_return (0, "adl_interface_enable_disable returned %d",
+                              rv);
+  }
+  return 0;
+}
+
+VLIB_CLI_COMMAND (adl_interface_command, static) = {
+    .path = "adl interface",
+    .short_help =
+    "adl interface <interface-name> [disable]",
+    .function = adl_enable_disable_command_fn,
+};
+
+
+int adl_allowlist_enable_disable (adl_allowlist_enable_disable_args_t *a)
+{
+  adl_main_t * cm = &adl_main;
+  vlib_main_t * vm = cm->vlib_main;
+  ip4_main_t * im4 = &ip4_main;
+  ip6_main_t * im6 = &ip6_main;
+  int address_family;
+  int is_add;
+  adl_config_main_t * acm;
+  u32 next_to_add_del = 0;
+  uword * p;
+  u32 fib_index = 0;
+  u32 ci;
+  adl_config_data_t _data, *data=&_data;
+
+  /*
+   * Enable / disable allowlist processing on the specified interface
+   */
+
+  for (address_family = VNET_ADL_IP4; address_family < VNET_N_ADLS;
+       address_family++)
+    {
+      acm = &cm->adl_config_mains[address_family];
+
+      switch(address_family)
+        {
+        case VNET_ADL_IP4:
+          is_add = (a->ip4 != 0);
+          next_to_add_del = IP4_RX_ADL_ALLOWLIST;
+          /* configured opaque data must match, or no supper */
+          p = hash_get (im4->fib_index_by_table_id, a->fib_id);
+          if (p)
+            fib_index = p[0];
+          else
+            {
+              if (is_add)
+                return VNET_API_ERROR_NO_SUCH_FIB;
+              else
+                continue;
+            }
+          break;
+
+        case VNET_ADL_IP6:
+          is_add = (a->ip6 != 0);
+          next_to_add_del = IP6_RX_ADL_ALLOWLIST;
+          p = hash_get (im6->fib_index_by_table_id, a->fib_id);
+          if (p)
+            fib_index = p[0];
+          else
+            {
+              if (is_add)
+                return VNET_API_ERROR_NO_SUCH_FIB;
+              else
+                continue;
+            }
+          break;
+
+        case VNET_ADL_DEFAULT:
+          is_add = (a->default_adl != 0);
+          next_to_add_del = DEFAULT_RX_ADL_ALLOWLIST;
+          break;
+
+        default:
+          clib_warning ("BUG");
+        }
+
+      ci = acm->config_index_by_sw_if_index[a->sw_if_index];
+      data->fib_index = fib_index;
+
+      if (is_add)
+	ci = vnet_config_add_feature (vm, &acm->config_main,
+				      ci,
+                                      next_to_add_del,
+                                      data, sizeof (*data));
+      else
+        {
+          /* If the feature was actually configured... */
+          if (ci != ~0)
+            {
+              /* delete it */
+              ci = vnet_config_del_feature (vm, &acm->config_main,
+                                            ci,
+                                            next_to_add_del,
+                                            data, sizeof (*data));
+            }
+        }
+
+      acm->config_index_by_sw_if_index[a->sw_if_index] = ci;
+    }
+  return 0;
+}
+
+static clib_error_t *
+adl_allowlist_enable_disable_command_fn (vlib_main_t * vm,
+                                         unformat_input_t * input,
+                                         vlib_cli_command_t * cmd)
+{
+  adl_main_t * cm = &adl_main;
+  u32 sw_if_index = ~0;
+  u8 ip4 = 0;
+  u8 ip6 = 0;
+  u8 default_adl = 0;
+  u32 fib_id = 0;
+  int rv;
+  adl_allowlist_enable_disable_args_t _a, * a = &_a;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
+    if (unformat (input, "ip4"))
+      ip4 = 1;
+    else if (unformat (input, "ip6"))
+      ip6 = 1;
+    else if (unformat (input, "default"))
+      default_adl = 1;
+    else if (unformat (input, "%U", unformat_vnet_sw_interface,
+                       cm->vnet_main, &sw_if_index))
+      ;
+    else if (unformat (input, "fib-id %d", &fib_id))
+      ;
+    else
+      break;
+  }
+
+  if (sw_if_index == ~0)
+    return clib_error_return (0, "Please specify an interface...");
+
+  a->sw_if_index = sw_if_index;
+  a->ip4 = ip4;
+  a->ip6 = ip6;
+  a->default_adl = default_adl;
+  a->fib_id = fib_id;
+
+  rv = adl_allowlist_enable_disable (a);
+
+  switch(rv) {
+  case 0:
+    break;
+
+  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+    return clib_error_return
+      (0, "Invalid interface, only works on physical ports");
+    break;
+
+  case VNET_API_ERROR_NO_SUCH_FIB:
+    return clib_error_return
+      (0, "Invalid fib");
+    break;
+
+  case VNET_API_ERROR_UNIMPLEMENTED:
+    return clib_error_return (0, "Device driver doesn't support redirection");
+    break;
+
+  default:
+    return clib_error_return (0, "adl_allowlist_enable_disable returned %d",
+                              rv);
+  }
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (adl_allowlist_command, static) =
+{
+   .path = "adl allowlist",
+   .short_help =
+   "adl allowlist <interface-name> [ip4][ip6][default][fib-id <NN>][disable]",
+   .function = adl_allowlist_enable_disable_command_fn,
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () =
+{
+  .version = VPP_BUILD_VER,
+  .description = "Allow/deny list plugin",
+};
+/* *INDENT-ON* */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/adl/adl.h b/src/plugins/adl/adl.h
new file mode 100644
index 00000000000..e88b9f15c97
--- /dev/null
+++ b/src/plugins/adl/adl.h
@@ -0,0 +1,114 @@
+/*
+ * 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__ */
diff --git a/src/plugins/adl/adl_api.c b/src/plugins/adl/adl_api.c
new file mode 100644
index 00000000000..37c96400b70
--- /dev/null
+++ b/src/plugins/adl/adl_api.c
@@ -0,0 +1,136 @@
+/*
+ *------------------------------------------------------------------
+ * adl_api.c - adl api
+ *
+ * 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.
+ *------------------------------------------------------------------
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <adl/adl.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+
+/* define message IDs */
+#include <vnet/format_fns.h>
+#include <adl/adl.api_enum.h>
+#include <adl/adl.api_types.h>
+
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+
+#define REPLY_MSG_ID_BASE am->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                                     \
+_(ADL_INTERFACE_ENABLE_DISABLE, adl_interface_enable_disable)   \
+_(ADL_LIST_ENABLE_DISABLE, adl_allowlist_enable_disable)
+
+/*
+ * Compatibility shim for the core engine cop_interface_enable_disable API,
+ * which will be deprecated in vpp 20.12.
+ */
+int vl_api_cop_interface_enable_disable_callback
+  (u32 sw_if_index, int enable_disable)
+{
+  return adl_interface_enable_disable (sw_if_index, enable_disable);
+}
+
+static void vl_api_adl_interface_enable_disable_t_handler
+  (vl_api_adl_interface_enable_disable_t * mp)
+{
+  adl_main_t *am = &adl_main;
+  vl_api_adl_interface_enable_disable_reply_t *rmp;
+  int rv;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int enable_disable;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  enable_disable = (int) mp->enable_disable;
+
+  rv = adl_interface_enable_disable (sw_if_index, enable_disable);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_ADL_INTERFACE_ENABLE_DISABLE_REPLY);
+}
+
+/*
+ * Compatibility shim for the core engine cop_whitelist_enable_disable API,
+ * which will be deprecated in vpp 20.12.
+ */
+int vl_api_cop_whitelist_enable_disable_callback
+  (adl_allowlist_enable_disable_args_t * a)
+{
+  return adl_allowlist_enable_disable (a);
+}
+
+static void vl_api_adl_allowlist_enable_disable_t_handler
+  (vl_api_adl_allowlist_enable_disable_t * mp)
+{
+  adl_main_t *am = &adl_main;
+  vl_api_adl_allowlist_enable_disable_reply_t *rmp;
+  adl_allowlist_enable_disable_args_t _a, *a = &_a;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int rv;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  a->sw_if_index = sw_if_index;
+  a->ip4 = mp->ip4;
+  a->ip6 = mp->ip6;
+  a->default_adl = mp->default_adl;
+  a->fib_id = ntohl (mp->fib_id);
+
+  rv = adl_allowlist_enable_disable (a);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_ADL_ALLOWLIST_ENABLE_DISABLE_REPLY);
+}
+
+#include <adl/adl.api.c>
+static clib_error_t *
+adl_api_init (vlib_main_t * vm)
+{
+  adl_main_t *am = &adl_main;
+  void register_vl_api_cop_interface_enable_disable_callback (void *);
+  void register_vl_api_cop_whitelist_enable_disable_callback (void *);
+
+  am->vlib_main = vm;
+
+  /* Ask for a correctly-sized block of API message decode slots */
+  am->msg_id_base = setup_message_id_table ();
+
+  /* Set up transitional API callbacks */
+  register_vl_api_cop_interface_enable_disable_callback
+    (vl_api_cop_interface_enable_disable_callback);
+  register_vl_api_cop_whitelist_enable_disable_callback
+    (vl_api_cop_whitelist_enable_disable_callback);
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (adl_api_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/adl/adl_test.c b/src/plugins/adl/adl_test.c
new file mode 100644
index 00000000000..9a32f96da99
--- /dev/null
+++ b/src/plugins/adl/adl_test.c
@@ -0,0 +1,153 @@
+/*
+ * adl.c - adl vpp-api-test plug-in
+ *
+ * Copyright (c) 2020 Cisco Systems and/or 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.
+ */
+#include <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vppinfra/error.h>
+#include <stdbool.h>
+
+#define __plugin_msg_base adl_test_main.msg_id_base
+#include <vlibapi/vat_helper_macros.h>
+
+uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
+
+/* Declare message IDs */
+#include <adl/adl.api_enum.h>
+#include <adl/adl.api_types.h>
+
+typedef struct
+{
+  /* API message ID base */
+  u16 msg_id_base;
+  vat_main_t *vat_main;
+} adl_test_main_t;
+
+adl_test_main_t adl_test_main;
+
+static int
+api_adl_interface_enable_disable (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  int enable_disable = 1;
+  u32 sw_if_index = ~0;
+  vl_api_adl_interface_enable_disable_t *mp;
+  int ret;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "%U", unformat_sw_if_index, vam, &sw_if_index))
+	;
+      else if (unformat (i, "sw_if_index %d", &sw_if_index))
+	;
+      else if (unformat (i, "disable"))
+	enable_disable = 0;
+      else
+	break;
+    }
+
+  if (sw_if_index == ~0)
+    {
+      errmsg ("missing interface name / explicit sw_if_index number \n");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (ADL_INTERFACE_ENABLE_DISABLE, mp);
+  mp->sw_if_index = ntohl (sw_if_index);
+  mp->enable_disable = enable_disable;
+
+  /* send it... */
+  S (mp);
+
+  /* Wait for a reply... */
+  W (ret);
+  return ret;
+}
+
+static int
+api_adl_allowlist_enable_disable (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  u32 sw_if_index = ~0;
+  vl_api_adl_allowlist_enable_disable_t *mp;
+  u32 fib_id = ~0;
+  int ip4 = 0;
+  int ip6 = 0;
+  int default_adl = 0;
+  int ret;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "%U", unformat_sw_if_index, vam, &sw_if_index))
+	;
+      else if (unformat (i, "sw_if_index %d", &sw_if_index))
+	;
+      else if (unformat (i, "fib-id %d", &fib_id))
+	;
+      else if (unformat (i, "ip4"))
+	ip4 = 1;
+      else if (unformat (i, "ip6"))
+	ip6 = 1;
+      else if (unformat (i, "default"))
+	default_adl = 1;
+      else
+	break;
+    }
+
+  if (sw_if_index == ~0)
+    {
+      errmsg ("missing interface name / explicit sw_if_index number \n");
+      return -99;
+    }
+
+  if (fib_id == ~0)
+    {
+      errmsg ("FIB id must be specified...\n");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (ADL_ALLOWLIST_ENABLE_DISABLE, mp);
+  mp->sw_if_index = ntohl (sw_if_index);
+  mp->fib_id = ntohl (fib_id);
+  mp->ip4 = ip4;
+  mp->ip6 = ip6;
+  mp->default_adl = default_adl;
+
+  /* send it... */
+  S (mp);
+
+  /* Wait for a reply... */
+  W (ret);
+  return ret;
+}
+
+/*
+ * List of messages that the adl test plugin sends,
+ * and that the data plane plugin processes
+ */
+#include <adl/adl.api_test.c>
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/adl/ip4_allowlist.c b/src/plugins/adl/ip4_allowlist.c
new file mode 100644
index 00000000000..ca7b4c115f0
--- /dev/null
+++ b/src/plugins/adl/ip4_allowlist.c
@@ -0,0 +1,343 @@
+/*
+ * 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.
+ */
+#include <plugins/adl/adl.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/dpo/load_balance.h>
+
+typedef struct {
+  u32 next_index;
+  u32 sw_if_index;
+} ip4_adl_allowlist_trace_t;
+
+/* packet trace format function */
+static u8 * format_ip4_adl_allowlist_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  ip4_adl_allowlist_trace_t * t = va_arg (*args, ip4_adl_allowlist_trace_t *);
+
+  s = format (s, "IP4_ADL_ALLOWLIST: sw_if_index %d, next index %d",
+              t->sw_if_index, t->next_index);
+  return s;
+}
+
+#define foreach_ip4_adl_allowlist_error         \
+_(ALLOWED, "ip4 allowlist allowed")             \
+_(DROPPED, "ip4 allowlist dropped")
+
+typedef enum {
+#define _(sym,str) IP4_ADL_ALLOWLIST_ERROR_##sym,
+  foreach_ip4_adl_allowlist_error
+#undef _
+  IP4_ADL_ALLOWLIST_N_ERROR,
+} ip4_adl_allowlist_error_t;
+
+static char * ip4_adl_allowlist_error_strings[] = {
+#define _(sym,string) string,
+  foreach_ip4_adl_allowlist_error
+#undef _
+};
+
+VLIB_NODE_FN (ip4_adl_allowlist_node) (vlib_main_t * vm,
+		  vlib_node_runtime_t * node,
+		  vlib_frame_t * frame)
+{
+  u32 n_left_from, * from, * to_next;
+  adl_feature_type_t next_index;
+  adl_main_t *cm = &adl_main;
+  vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_counters;
+  u32 thread_index = vm->thread_index;
+  u32 allowed_packets;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  allowed_packets = n_left_from;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index,
+			   to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+      	{
+          u32 bi0, bi1;
+          vlib_buffer_t * b0, * b1;
+          u32 next0, next1;
+          u32 sw_if_index0, sw_if_index1;
+          ip4_header_t * ip0, * ip1;
+          adl_config_main_t * ccm0, * ccm1;
+          adl_config_data_t * c0, * c1;
+      	  ip4_fib_mtrie_t * mtrie0, * mtrie1;
+      	  ip4_fib_mtrie_leaf_t leaf0, leaf1;
+          u32 lb_index0, lb_index1;
+          const load_balance_t * lb0, *lb1;
+          const dpo_id_t *dpo0, *dpo1;
+
+      	  /* Prefetch next iteration. */
+      	  {
+      	    vlib_buffer_t * p2, * p3;
+
+      	    p2 = vlib_get_buffer (vm, from[2]);
+      	    p3 = vlib_get_buffer (vm, from[3]);
+
+      	    vlib_prefetch_buffer_header (p2, LOAD);
+      	    vlib_prefetch_buffer_header (p3, LOAD);
+
+      	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+      	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+      	  }
+
+          /* speculatively enqueue b0 and b1 to the current next frame */
+      	  to_next[0] = bi0 = from[0];
+      	  to_next[1] = bi1 = from[1];
+      	  from += 2;
+      	  to_next += 2;
+      	  n_left_from -= 2;
+      	  n_left_to_next -= 2;
+
+      	  b0 = vlib_get_buffer (vm, bi0);
+          sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+
+      	  ip0 = vlib_buffer_get_current (b0);
+
+      	  ccm0 = cm->adl_config_mains + VNET_ADL_IP4;
+
+      	  c0 = vnet_get_config_data
+              (&ccm0->config_main,
+               &adl_buffer (b0)->adl.current_config_index,
+               &next0,
+               sizeof (c0[0]));
+
+	  mtrie0 = &ip4_fib_get (c0->fib_index)->mtrie;
+
+          leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
+
+      	  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0,
+                                             &ip0->src_address, 2);
+
+      	  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0,
+                                             &ip0->src_address, 3);
+
+      	  lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+
+	  ASSERT (lb_index0
+                  == ip4_fib_table_lookup_lb (ip4_fib_get(c0->fib_index),
+	  				       &ip0->src_address));
+	  lb0 = load_balance_get (lb_index0);
+          dpo0 = load_balance_get_bucket_i(lb0, 0);
+
+          if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
+            {
+              b0->error = node->errors[IP4_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next0 = RX_ADL_DROP;
+            }
+
+      	  b1 = vlib_get_buffer (vm, bi1);
+          sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
+
+      	  ip1 = vlib_buffer_get_current (b1);
+
+      	  ccm1 = cm->adl_config_mains + VNET_ADL_IP4;
+
+      	  c1 = vnet_get_config_data
+              (&ccm1->config_main,
+               &adl_buffer (b1)->adl.current_config_index,
+               &next1,
+               sizeof (c1[0]));
+	  mtrie1 = &ip4_fib_get (c1->fib_index)->mtrie;
+
+          leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, &ip1->src_address);
+
+      	  leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1,
+                                             &ip1->src_address, 2);
+
+      	  leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1,
+                                             &ip1->src_address, 3);
+
+      	  lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
+	  ASSERT (lb_index1
+                  == ip4_fib_table_lookup_lb (ip4_fib_get(c1->fib_index),
+	  				       &ip1->src_address));
+	  lb1 = load_balance_get (lb_index1);
+          dpo1 = load_balance_get_bucket_i(lb1, 0);
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index0, 1,
+               vlib_buffer_length_in_chain (vm, b0)
+               + sizeof(ethernet_header_t));
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index1, 1,
+               vlib_buffer_length_in_chain (vm, b1)
+               + sizeof(ethernet_header_t));
+
+
+          if (PREDICT_FALSE(dpo1->dpoi_type != DPO_RECEIVE))
+            {
+              b1->error = node->errors[IP4_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next1 = RX_ADL_DROP;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip4_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip4_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b1, sizeof (*t));
+              t->sw_if_index = sw_if_index1;
+              t->next_index = next1;
+            }
+
+          /* verify speculative enqueues, maybe switch current next frame */
+          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+                                           to_next, n_left_to_next,
+                                           bi0, bi1, next0, next1);
+        }
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+          u32 bi0;
+	  vlib_buffer_t * b0;
+          u32 next0;
+          u32 sw_if_index0;
+          ip4_header_t * ip0;
+          adl_config_main_t *ccm0;
+          adl_config_data_t *c0;
+	  ip4_fib_mtrie_t * mtrie0;
+	  ip4_fib_mtrie_leaf_t leaf0;
+          u32 lb_index0;
+          const load_balance_t * lb0;
+          const dpo_id_t *dpo0;
+
+          /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+          sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+
+	  ip0 = vlib_buffer_get_current (b0);
+
+	  ccm0 = cm->adl_config_mains + VNET_ADL_IP4;
+
+	  c0 = vnet_get_config_data
+              (&ccm0->config_main,
+               &adl_buffer (b0)->adl.current_config_index,
+               &next0,
+               sizeof (c0[0]));
+
+	  mtrie0 = &ip4_fib_get (c0->fib_index)->mtrie;
+
+          leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address);
+
+	  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0,
+                                             &ip0->src_address, 2);
+
+	  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0,
+                                             &ip0->src_address, 3);
+
+	  lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
+
+	  ASSERT (lb_index0
+                  == ip4_fib_table_lookup_lb (ip4_fib_get(c0->fib_index),
+					      &ip0->src_address));
+
+	  lb0 = load_balance_get (lb_index0);
+          dpo0 = load_balance_get_bucket_i(lb0, 0);
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index0, 1,
+               vlib_buffer_length_in_chain (vm, b0)
+               + sizeof(ethernet_header_t));
+
+          if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
+            {
+              b0->error = node->errors[IP4_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next0 = RX_ADL_DROP;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip4_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+
+  vlib_node_increment_counter (vm, node->node_index,
+			       IP4_ADL_ALLOWLIST_ERROR_ALLOWED,
+                               allowed_packets);
+
+  return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (ip4_adl_allowlist_node) = {
+  .name = "ip4-adl-allowlist",
+  .vector_size = sizeof (u32),
+  .format_trace = format_ip4_adl_allowlist_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(ip4_adl_allowlist_error_strings),
+  .error_strings = ip4_adl_allowlist_error_strings,
+
+  .n_next_nodes = ADL_RX_N_FEATURES,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [IP4_RX_ADL_ALLOWLIST] = "ip4-adl-allowlist",
+    [IP6_RX_ADL_ALLOWLIST] = "ip6-adl-allowlist",
+    [DEFAULT_RX_ADL_ALLOWLIST] = "default-adl-allowlist",
+    [IP4_RX_ADL_INPUT] = "ip4-input",
+    [IP6_RX_ADL_INPUT] = "ip6-input",
+    [DEFAULT_RX_ADL_INPUT] = "ethernet-input",
+    [RX_ADL_DROP] = "error-drop",
+  },
+};
+
+static clib_error_t *
+ip4_allowlist_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (ip4_allowlist_init);
diff --git a/src/plugins/adl/ip6_allowlist.c b/src/plugins/adl/ip6_allowlist.c
new file mode 100644
index 00000000000..d272f101b43
--- /dev/null
+++ b/src/plugins/adl/ip6_allowlist.c
@@ -0,0 +1,300 @@
+/*
+ * 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.
+ */
+#include <plugins/adl/adl.h>
+#include <vnet/fib/ip6_fib.h>
+#include <vnet/dpo/load_balance.h>
+
+typedef struct {
+  u32 next_index;
+  u32 sw_if_index;
+} ip6_adl_allowlist_trace_t;
+
+/* packet trace format function */
+static u8 * format_ip6_adl_allowlist_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  ip6_adl_allowlist_trace_t * t = va_arg (*args, ip6_adl_allowlist_trace_t *);
+
+  s = format (s, "IP6_ADL_ALLOWLIST: sw_if_index %d, next index %d",
+              t->sw_if_index, t->next_index);
+  return s;
+}
+
+#define foreach_ip6_adl_allowlist_error         \
+_(ALLOWED, "ip6 allowlist allowed")             \
+_(DROPPED, "ip6 allowlist dropped")
+
+typedef enum {
+#define _(sym,str) IP6_ADL_ALLOWLIST_ERROR_##sym,
+  foreach_ip6_adl_allowlist_error
+#undef _
+  IP6_ADL_ALLOWLIST_N_ERROR,
+} ip6_adl_allowlist_error_t;
+
+static char * ip6_adl_allowlist_error_strings[] = {
+#define _(sym,string) string,
+  foreach_ip6_adl_allowlist_error
+#undef _
+};
+
+VLIB_NODE_FN (ip6_adl_allowlist_node) (vlib_main_t * vm,
+		  vlib_node_runtime_t * node,
+		  vlib_frame_t * frame)
+{
+  u32 n_left_from, * from, * to_next;
+  adl_feature_type_t next_index;
+  adl_main_t *cm = &adl_main;
+  vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_counters;
+  u32 thread_index = vm->thread_index;
+  u32 allowed_packets;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  allowed_packets = n_left_from;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index,
+			   to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+	{
+          u32 bi0, bi1;
+          vlib_buffer_t * b0, * b1;
+          u32 next0, next1;
+          u32 sw_if_index0, sw_if_index1;
+          ip6_header_t * ip0, * ip1;
+          adl_config_main_t * ccm0, * ccm1;
+          adl_config_data_t * c0, * c1;
+          u32 lb_index0, lb_index1;
+          const load_balance_t * lb0, *lb1;
+          const dpo_id_t *dpo0, *dpo1;
+
+	  /* Prefetch next iteration. */
+	  {
+	    vlib_buffer_t * p2, * p3;
+
+	    p2 = vlib_get_buffer (vm, from[2]);
+	    p3 = vlib_get_buffer (vm, from[3]);
+
+	    vlib_prefetch_buffer_header (p2, LOAD);
+	    vlib_prefetch_buffer_header (p3, LOAD);
+
+	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+	  }
+
+          /* speculatively enqueue b0 and b1 to the current next frame */
+	  to_next[0] = bi0 = from[0];
+	  to_next[1] = bi1 = from[1];
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+          sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+
+	  ip0 = vlib_buffer_get_current (b0);
+
+	  ccm0 = cm->adl_config_mains + VNET_ADL_IP6;
+
+	  c0 = vnet_get_config_data
+              (&ccm0->config_main,
+               &adl_buffer (b0)->adl.current_config_index,
+               &next0,
+               sizeof (c0[0]));
+
+          lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
+						    &ip0->src_address);
+	  lb0 = load_balance_get (lb_index0);
+          dpo0 = load_balance_get_bucket_i(lb0, 0);
+
+          if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
+            {
+              b0->error = node->errors[IP6_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next0 = RX_ADL_DROP;
+            }
+
+	  b1 = vlib_get_buffer (vm, bi1);
+          sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
+
+	  ip1 = vlib_buffer_get_current (b1);
+
+	  ccm1 = cm->adl_config_mains + VNET_ADL_IP6;
+
+	  c1 = vnet_get_config_data
+              (&ccm1->config_main,
+               &adl_buffer (b1)->adl.current_config_index,
+               &next1,
+               sizeof (c1[0]));
+
+          lb_index1 = ip6_fib_table_fwding_lookup (c1->fib_index,
+						    &ip1->src_address);
+
+	  lb1 = load_balance_get (lb_index1);
+          dpo1 = load_balance_get_bucket_i(lb1, 0);
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index0, 1,
+               vlib_buffer_length_in_chain (vm, b0)
+               + sizeof(ethernet_header_t));
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index1, 1,
+               vlib_buffer_length_in_chain (vm, b1)
+               + sizeof(ethernet_header_t));
+
+          if (PREDICT_FALSE(dpo1->dpoi_type != DPO_RECEIVE))
+            {
+              b1->error = node->errors[IP6_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next1 = RX_ADL_DROP;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip6_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip6_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b1, sizeof (*t));
+              t->sw_if_index = sw_if_index1;
+              t->next_index = next1;
+            }
+
+          /* verify speculative enqueues, maybe switch current next frame */
+          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+                                           to_next, n_left_to_next,
+                                           bi0, bi1, next0, next1);
+        }
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+          u32 bi0;
+	  vlib_buffer_t * b0;
+          u32 next0;
+          u32 sw_if_index0;
+          ip6_header_t * ip0;
+          adl_config_main_t *ccm0;
+          adl_config_data_t *c0;
+          u32 lb_index0;
+          const load_balance_t * lb0;
+          const dpo_id_t *dpo0;
+
+          /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+          sw_if_index0 = adl_buffer(b0)->sw_if_index[VLIB_RX];
+
+	  ip0 = vlib_buffer_get_current (b0);
+
+	  ccm0 = cm->adl_config_mains + VNET_ADL_IP6;
+
+	  c0 = vnet_get_config_data
+              (&ccm0->config_main,
+               &adl_buffer (b0)->adl.current_config_index,
+               &next0,
+               sizeof (c0[0]));
+
+          lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
+						    &ip0->src_address);
+
+	  lb0 = load_balance_get (lb_index0);
+          dpo0 = load_balance_get_bucket_i(lb0, 0);
+
+          vlib_increment_combined_counter
+              (vcm, thread_index, lb_index0, 1,
+               vlib_buffer_length_in_chain (vm, b0)
+               + sizeof(ethernet_header_t));
+
+          if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
+            {
+              b0->error = node->errors[IP6_ADL_ALLOWLIST_ERROR_DROPPED];
+              allowed_packets--;
+              next0 = RX_ADL_DROP;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              ip6_adl_allowlist_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+  vlib_node_increment_counter (vm, node->node_index,
+			       IP6_ADL_ALLOWLIST_ERROR_ALLOWED,
+                               allowed_packets);
+  return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (ip6_adl_allowlist_node) = {
+  .name = "ip6-adl-allowlist",
+  .vector_size = sizeof (u32),
+  .format_trace = format_ip6_adl_allowlist_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(ip6_adl_allowlist_error_strings),
+  .error_strings = ip6_adl_allowlist_error_strings,
+
+  .n_next_nodes = ADL_RX_N_FEATURES,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [IP4_RX_ADL_ALLOWLIST] = "ip4-adl-allowlist",
+    [IP6_RX_ADL_ALLOWLIST] = "ip6-adl-allowlist",
+    [DEFAULT_RX_ADL_ALLOWLIST] = "default-adl-allowlist",
+    [IP4_RX_ADL_INPUT] = "ip4-input",
+    [IP6_RX_ADL_INPUT] = "ip6-input",
+    [DEFAULT_RX_ADL_INPUT] = "ethernet-input",
+    [RX_ADL_DROP] = "error-drop",
+  },
+};
+
+static clib_error_t *
+ip6_allowlist_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (ip6_allowlist_init);
diff --git a/src/plugins/adl/node.c b/src/plugins/adl/node.c
new file mode 100644
index 00000000000..9ee991c4c6a
--- /dev/null
+++ b/src/plugins/adl/node.c
@@ -0,0 +1,309 @@
+/*
+ * 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.
+ */
+
+#include <plugins/adl/adl.h>
+#include <vnet/pg/pg.h>
+
+typedef struct {
+  u32 next_index;
+  u32 sw_if_index;
+} adl_input_trace_t;
+
+/* packet trace format function */
+static u8 * format_adl_input_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  adl_input_trace_t * t = va_arg (*args, adl_input_trace_t *);
+
+  s = format (s, "ADL_INPUT: sw_if_index %d, next index %d",
+              t->sw_if_index, t->next_index);
+  return s;
+}
+
+#define foreach_adl_input_error \
+_(PROCESSED, "Allow/Deny packets processed")
+
+typedef enum {
+#define _(sym,str) ADL_INPUT_ERROR_##sym,
+  foreach_adl_input_error
+#undef _
+  ADL_INPUT_N_ERROR,
+} adl_input_error_t;
+
+static char * adl_input_error_strings[] = {
+#define _(sym,string) string,
+  foreach_adl_input_error
+#undef _
+};
+
+VLIB_NODE_FN (adl_input_node) (vlib_main_t * vm,
+		  vlib_node_runtime_t * node,
+		  vlib_frame_t * frame)
+{
+  u32 n_left_from, * from, * to_next;
+  adl_feature_type_t next_index;
+  adl_main_t *am = &adl_main;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index,
+			   to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+	{
+          u32 bi0, bi1;
+	  vlib_buffer_t * b0, * b1;
+          u32 next0, next1;
+          u32 sw_if_index0, sw_if_index1;
+          ethernet_header_t * en0, * en1;
+          adl_config_main_t * ccm0, * ccm1;
+          u32 advance0, advance1;
+          int proto0, proto1;
+
+	  /* Prefetch next iteration. */
+	  {
+	    vlib_buffer_t * p2, * p3;
+
+	    p2 = vlib_get_buffer (vm, from[2]);
+	    p3 = vlib_get_buffer (vm, from[3]);
+
+	    vlib_prefetch_buffer_header (p2, LOAD);
+	    vlib_prefetch_buffer_header (p3, LOAD);
+
+	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+	  }
+
+          /* speculatively enqueue b0 and b1 to the current next frame */
+	  to_next[0] = bi0 = from[0];
+	  to_next[1] = bi1 = from[1];
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+	  b1 = vlib_get_buffer (vm, bi1);
+
+          en0 = vlib_buffer_get_current (b0);
+          en1 = vlib_buffer_get_current (b1);
+
+          sw_if_index0 = adl_buffer(b0)->sw_if_index[VLIB_RX];
+          sw_if_index1 = adl_buffer(b1)->sw_if_index[VLIB_RX];
+
+          proto0 = VNET_ADL_DEFAULT;
+          proto1 = VNET_ADL_DEFAULT;
+          advance0 = 0;
+          advance1 = 0;
+
+          if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+            {
+              proto0 = VNET_ADL_IP4;
+              advance0 = sizeof(ethernet_header_t);
+            }
+          else if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+            {
+              proto0 = VNET_ADL_IP6;
+              advance0 = sizeof(ethernet_header_t);
+            }
+
+          if (en1->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+            {
+              proto1 = VNET_ADL_IP4;
+              advance1 = sizeof(ethernet_header_t);
+            }
+          else if (en1->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+            {
+              proto1 = VNET_ADL_IP6;
+              advance1 = sizeof(ethernet_header_t);
+            }
+
+	  ccm0 = am->adl_config_mains + proto0;
+	  ccm1 = am->adl_config_mains + proto1;
+          adl_buffer(b0)->adl.current_config_index =
+            ccm0->config_index_by_sw_if_index [sw_if_index0];
+
+          adl_buffer(b1)->adl.current_config_index =
+            ccm1->config_index_by_sw_if_index [sw_if_index1];
+
+          vlib_buffer_advance (b0, advance0);
+          vlib_buffer_advance (b1, advance1);
+
+          vnet_get_config_data (&ccm0->config_main,
+                                &adl_buffer(b0)->adl.current_config_index,
+                                &next0, 0 /* bytes of config data */);
+
+          vnet_get_config_data (&ccm1->config_main,
+                                &adl_buffer(b1)->adl.current_config_index,
+                                &next1, 0 /* bytes of config data */);
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              adl_input_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b1->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              adl_input_trace_t *t =
+                 vlib_add_trace (vm, node, b1, sizeof (*t));
+              t->sw_if_index = sw_if_index1;
+              t->next_index = next1;
+            }
+          /* verify speculative enqueues, maybe switch current next frame */
+          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+                                           to_next, n_left_to_next,
+                                           bi0, bi1, next0, next1);
+        }
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+          u32 bi0;
+	  vlib_buffer_t * b0;
+          u32 next0;
+          u32 sw_if_index0;
+          ethernet_header_t *en0;
+          adl_config_main_t *ccm0;
+          u32 advance0;
+          int proto0;
+
+          /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+
+          /*
+           * Direct from the driver, we should be at offset 0
+           * aka at &b0->data[0]
+           */
+          ASSERT (b0->current_data == 0);
+
+          en0 = vlib_buffer_get_current (b0);
+
+          sw_if_index0 = adl_buffer(b0)->sw_if_index[VLIB_RX];
+
+          proto0 = VNET_ADL_DEFAULT;
+          advance0 = 0;
+
+          if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
+            {
+              proto0 = VNET_ADL_IP4;
+              advance0 = sizeof(ethernet_header_t);
+            }
+          else if (en0->type == clib_host_to_net_u16(ETHERNET_TYPE_IP6))
+            {
+              proto0 = VNET_ADL_IP6;
+              advance0 = sizeof(ethernet_header_t);
+            }
+
+	  ccm0 = am->adl_config_mains + proto0;
+          adl_buffer(b0)->adl.current_config_index =
+            ccm0->config_index_by_sw_if_index [sw_if_index0];
+
+          vlib_buffer_advance (b0, advance0);
+
+          vnet_get_config_data (&ccm0->config_main,
+                                &adl_buffer(b0)->adl.current_config_index,
+                                &next0, 0 /* bytes of config data */);
+
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              adl_input_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+  vlib_node_increment_counter (vm, adl_input_node.index,
+                               ADL_INPUT_ERROR_PROCESSED, frame->n_vectors);
+  return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (adl_input_node) = {
+  .name = "adl-input",
+  .vector_size = sizeof (u32),
+  .format_trace = format_adl_input_trace,
+  .unformat_buffer = unformat_ethernet_header,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(adl_input_error_strings),
+  .error_strings = adl_input_error_strings,
+
+  .n_next_nodes = ADL_RX_N_FEATURES,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [IP4_RX_ADL_ALLOWLIST] = "ip4-adl-allowlist",
+    [IP6_RX_ADL_ALLOWLIST] = "ip6-adl-allowlist",
+    [DEFAULT_RX_ADL_ALLOWLIST] = "default-adl-allowlist",
+    [IP4_RX_ADL_INPUT] = "ip4-input",
+    [IP6_RX_ADL_INPUT] = "ip6-input",
+    [DEFAULT_RX_ADL_INPUT] = "ethernet-input",
+    [RX_ADL_DROP] = "error-drop",
+  },
+};
+
+#define foreach_adl_stub                        \
+_(default-adl-allowlist, default_adl_allowlist)
+
+#define _(n,f)                                  \
+                                                \
+static uword                                    \
+f##_node_fn (vlib_main_t * vm,                  \
+             vlib_node_runtime_t * node,        \
+             vlib_frame_t * frame)              \
+{                                               \
+  clib_warning ("BUG: stub function called");   \
+  return 0;                                     \
+}                                               \
+                                                \
+VLIB_REGISTER_NODE (f##_input_node) = {         \
+  .function = f##_node_fn,                      \
+  .name = #n,                                   \
+  .vector_size = sizeof (u32),                  \
+  .type = VLIB_NODE_TYPE_INTERNAL,              \
+                                                \
+  .n_errors = 0,                                \
+  .error_strings = 0,                           \
+                                                \
+  .n_next_nodes = 0,                            \
+};
+
+foreach_adl_stub;
diff --git a/src/plugins/adl/setup.pg b/src/plugins/adl/setup.pg
new file mode 100644
index 00000000000..7f816bc0893
--- /dev/null
+++ b/src/plugins/adl/setup.pg
@@ -0,0 +1,62 @@
+set term pag off
+
+loop create
+set int ip address loop0 192.168.1.1/24
+set int ip6 table loop0 0
+set int ip address loop0 2001:db01::1/64
+set int state loop0 up
+
+packet-generator new {
+    name ip4
+    limit 100
+    rate 0
+    size 128-128
+    interface loop0
+    node adl-input
+    data { IP4: 1.2.40 -> 3cfd.fed0.b6c8
+           UDP: 192.168.1.2-192.168.1.10 -> 192.168.2.1
+           UDP: 1234 -> 2345
+           incrementing 114
+    }
+}
+
+packet-generator new {
+    name ip6-allow
+    limit 50
+    rate 0
+    size 128-128
+    interface loop0
+    node adl-input
+    data { IP6: 1.2.40 -> 3cfd.fed0.b6c8
+           UDP: 2001:db01::2 -> 2001:db01::1
+           UDP: 1234 -> 2345
+           incrementing 80
+    }
+}
+
+packet-generator new {
+    name ip6-drop
+    limit 50
+    rate 0
+    size 128-128
+    interface loop0
+    node adl-input
+    data { IP6: 1.2.40 -> 3cfd.fed0.b6c8
+           UDP: 2001:db01::3 -> 2001:db01::1
+           UDP: 1234 -> 2345
+           incrementing 80
+    }
+}
+
+ip table 1
+ip route add 192.168.2.1/32 via drop
+ip route add table 1 192.168.1.2/32 via local
+
+ip6 table 1
+ip route add 2001:db01::1/128 via drop
+ip route add table 1 2001:db01::2/128 via local
+
+comment { bin adl_interface_enable_disable loop0 }
+comment { bin adl_allowlist_enable_disable loop0 fib-id 1 ip4 ip6 }
+uncomment {bin cop_interface_enable_disable loop0 }
+uncomment {bin cop_whitelist_enable_disable loop0 fib-id 1 ip4 ip6 }
diff --git a/src/plugins/adl/test/test_adl.py b/src/plugins/adl/test/test_adl.py
new file mode 100644
index 00000000000..4a996fc5c90
--- /dev/null
+++ b/src/plugins/adl/test/test_adl.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner, running_gcov_tests
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
+
+
+class TestAdl(VppTestCase):
+    """ Allow/Deny Plugin Unit Test Cases """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestAdl, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestAdl, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestAdl, self).setUp()
+
+    def tearDown(self):
+        super(TestAdl, self).tearDown()
+
+    def test_adl1_unittest(self):
+        """ Plugin API Test """
+        cmds = ["loop create\n",
+                "set int ip address loop0 192.168.1.1/24\n",
+                "set int ip6 table loop0 0\n",
+                "set int ip address loop0 2001:db01::1/64\n",
+                "set int state loop0 up\n",
+                "packet-generator new {\n"
+                " name ip4\n"
+                " limit 100\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP4: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 192.168.1.2-192.168.1.10 -> 192.168.2.1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 114\n"
+                "       }\n"
+                " }\n",
+                "packet-generator new {\n"
+                " name ip6-allow\n"
+                " limit 50\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP6: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 2001:db01::2 -> 2001:db01::1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 80\n"
+                "      }\n"
+                " }\n",
+                "packet-generator new {\n"
+                " name ip6-drop\n"
+                " limit 50\n"
+                " rate 0\n"
+                " size 128-128\n"
+                " interface loop0\n"
+                " node adl-input\n"
+                " data { IP6: 1.2.40 -> 3cfd.fed0.b6c8\n"
+                "        UDP: 2001:db01::3 -> 2001:db01::1\n"
+                "        UDP: 1234 -> 2345\n"
+                "        incrementing 80\n"
+                "      }\n"
+                " }\n",
+                "ip table 1\n",
+                "ip route add 192.168.2.1/32 via drop\n",
+                "ip route add table 1 192.168.1.2/32 via local\n",
+                "ip6 table 1\n",
+                "ip route add 2001:db01::1/128 via drop\n",
+                "ip route add table 1 2001:db01::2/128 via local\n",
+                "bin adl_interface_enable_disable loop0\n",
+                "bin adl_allowlist_enable_disable loop0 fib-id 1 ip4 ip6\n",
+                "pa en\n"]
+
+        for cmd in cmds:
+            r = self.vapi.cli_return_response(cmd)
+            if r.retval != 0:
+                if hasattr(r, 'reply'):
+                    self.logger.info(cmd + " FAIL reply " + r.reply)
+                else:
+                    self.logger.info(cmd + " FAIL retval " + str(r.retval))
+
+        total_pkts = self.statistics.get_err_counter(
+            "/err/adl-input/Allow/Deny packets processed")
+
+        self.assertEqual(total_pkts, 200)
+
+        ip4_allow = self.statistics.get_err_counter(
+            "/err/ip4-adl-allowlist/ip4 allowlist allowed")
+        self.assertEqual(ip4_allow, 12)
+        ip6_allow = self.statistics.get_err_counter(
+            "/err/ip6-adl-allowlist/ip6 allowlist allowed")
+        self.assertEqual(ip6_allow, 50)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)