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+/*
+ * 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 __LOOKUP_DPO_H__
+#define __LOOKUP_DPO_H__
+
+#include <vnet/vnet.h>
+#include <vnet/fib/fib_types.h>
+#include <vnet/dpo/dpo.h>
+
+/**
+ * Switch to use the packet's source or destination address for lookup
+ */
+typedef enum lookup_input_t_ {
+ LOOKUP_INPUT_SRC_ADDR,
+ LOOKUP_INPUT_DST_ADDR,
+} __attribute__ ((packed)) lookup_input_t;
+
+#define LOOKUP_INPUTS { \
+ [LOOKUP_INPUT_SRC_ADDR] = "src-address", \
+ [LOOKUP_INPUT_DST_ADDR] = "dst-address", \
+}
+
+/**
+ * Switch to use the packet's source or destination address for lookup
+ */
+typedef enum lookup_table_t_ {
+ LOOKUP_TABLE_FROM_INPUT_INTERFACE,
+ LOOKUP_TABLE_FROM_CONFIG,
+} __attribute__ ((packed)) lookup_table_t;
+
+#define LOOKUP_TABLES { \
+ [LOOKUP_INPUT_SRC_ADDR] = "table-input-interface", \
+ [LOOKUP_INPUT_DST_ADDR] = "table-configured", \
+}
+
+/**
+ * A representation of an MPLS label for imposition in the data-path
+ */
+typedef struct lookup_dpo_t
+{
+ /**
+ * The FIB, or interface from which to get a FIB, in which to perform
+ * the next lookup;
+ */
+ fib_node_index_t lkd_fib_index;
+
+ /**
+ * The protocol of the FIB for the lookup, and hence
+ * the protocol of the packet
+ */
+ dpo_proto_t lkd_proto;
+
+ /**
+ * Switch to use src or dst address
+ */
+ lookup_input_t lkd_input;
+
+ /**
+ * Switch to use the table index passed, or the table of the input interface
+ */
+ lookup_table_t lkd_table;
+
+ /**
+ * Number of locks
+ */
+ u16 lkd_locks;
+} lookup_dpo_t;
+
+extern void lookup_dpo_add_or_lock_w_fib_index(fib_node_index_t fib_index,
+ dpo_proto_t proto,
+ lookup_input_t input,
+ lookup_table_t table,
+ dpo_id_t *dpo);
+extern void lookup_dpo_add_or_lock_w_table_id(u32 table_id,
+ dpo_proto_t proto,
+ lookup_input_t input,
+ lookup_table_t table,
+ dpo_id_t *dpo);
+
+extern u8* format_lookup_dpo(u8 *s, va_list *args);
+
+/*
+ * Encapsulation violation for fast data-path access
+ */
+extern lookup_dpo_t *lookup_dpo_pool;
+
+static inline lookup_dpo_t *
+lookup_dpo_get (index_t index)
+{
+ return (pool_elt_at_index(lookup_dpo_pool, index));
+}
+
+extern void lookup_dpo_module_init(void);
+
+#endif