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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_TABLE_FROM_INPUT_INTERFACE] = "table-input-interface", \
[LOOKUP_TABLE_FROM_CONFIG] = "table-configured", \
}
/**
* Switch to use the packet's source or destination address for lookup
*/
typedef enum lookup_cast_t_ {
LOOKUP_UNICAST,
LOOKUP_MULTICAST,
} __attribute__ ((packed)) lookup_cast_t;
#define LOOKUP_CASTS { \
[LOOKUP_UNICAST] = "unicast", \
[LOOKUP_MULTICAST] = "multicast", \
}
/**
* A representation of an MPLS label for imposition in the data-path
*/
typedef struct lookup_dpo_t
{
/**
* required for pool_get_aligned.
* memebers used in the switch path come first!
*/
CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
/**
* 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;
/**
* Unicast of rmulticast FIB lookup
*/
lookup_cast_t lkd_cast;
/**
* 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_cast_t cast,
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_cast_t cast,
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
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