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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 __DVR_DPO_H__
#define __DVR_DPO_H__
#include <vnet/dpo/dpo.h>
/**
* Control how the reinject is performed
*/
typedef enum dvr_dpo_reinject_t_
{
DVR_REINJECT_L2,
DVR_REINJECT_L3,
} __clib_packed dvr_dpo_reinject_t;
/**
* @brief
* The DVR DPO. Used as the resolving object for a DVR route.
* This is used, in place of the usual L3 Adjacency, to retransmit
* the packet with the original L2 header intact but also to run L3 features.
* After running L3 features the packet is re-injected back into the L2 path
* so it can pick up the necessary VLAN tags of the egress interface.
* This re-injection is done with an output feature.
*/
typedef struct dvr_dpo_t_
{
/**
* The Software interface index that the packets will output on
*/
u32 dd_sw_if_index;
/**
* The protocol of packets using this DPO
*/
dpo_proto_t dd_proto;
/**
* Control for how the re-inject is performed
*/
dvr_dpo_reinject_t dd_reinject;
/**
* number of locks.
*/
u16 dd_locks;
} dvr_dpo_t;
/* 8 bytes is a factor of cache line size so this struct will never span */
STATIC_ASSERT_SIZEOF(dvr_dpo_t, 8);
extern void dvr_dpo_add_or_lock (u32 sw_if_index,
dpo_proto_t dproto,
dpo_id_t *dpo);
extern void dvr_dpo_module_init(void);
/**
* @brief pool of all interface DPOs
*/
extern dvr_dpo_t *dvr_dpo_pool;
static inline dvr_dpo_t *
dvr_dpo_get (index_t index)
{
return (pool_elt_at_index(dvr_dpo_pool, index));
}
#endif
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