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

1 files changed, 309 insertions, 0 deletions

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;