A Protocol Independent Hierarchical FIB (VPP-352)

Main Enhancements:
 - Protocol Independent FIB API
 - Hierarchical FIB entries. Dynamic recursive route resolution.
 - Extranet Support.
 - Integration of IP and MPLS forwarding.
 - Separation of FIB and Adjacency databases.
 - Data-Plane Object forwarding model.

Change-Id: I52dc815c0d0aa8b493e3cf6b978568f3cc82296c
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/vnet/vnet/fib/fib_walk.h b/vnet/vnet/fib/fib_walk.h
new file mode 100644
index 00000000000..7ae99d0d8aa
--- /dev/null
+++ b/vnet/vnet/fib/fib_walk.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 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 __FIB_WALK_H__
+#define __FIB_WALK_H__
+
+#include <vnet/fib/fib_node.h>
+
+/**
+ * @brief Walk priorities.
+ * Strict priorities. All walks a priority n are completed before n+1 is started.
+ * Increasing numerical value implies decreasing priority.
+ */
+typedef enum fib_walk_priority_t_
+{
+    FIB_WALK_PRIORITY_HIGH = 0,
+    FIB_WALK_PRIORITY_LOW  = 1,
+} fib_walk_priority_t;
+
+#define FIB_WALK_PRIORITY_NUM (FIB_WALK_PRIORITY_LOW+1)
+
+#define FIB_WALK_PRIORITIES {           \
+    [FIB_WALK_PRIORITY_HIGH] = "high",  \
+    [FIB_WALK_PRIORITY_LOW]  = "low",   \
+}
+
+#define FOR_EACH_FIB_WALK_PRIORITY(_prio)         \
+    for ((_prio) = FIB_WALK_PRIORITY_HIGH;        \
+         (_prio) < FIB_WALK_PRIORITY_NUM;         \
+         (_prio)++)
+
+extern void fib_walk_module_init(void);
+
+extern void fib_walk_async(fib_node_type_t parent_type,
+                           fib_node_index_t parent_index,
+                           fib_walk_priority_t prio,
+                           fib_node_back_walk_ctx_t *ctx);
+
+extern void fib_walk_sync(fib_node_type_t parent_type,
+                          fib_node_index_t parent_index,
+                          fib_node_back_walk_ctx_t *ctx);
+
+extern u8* format_fib_walk_priority(u8 *s, va_list ap);
+
+#endif
+