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/*
* Copyright (c) 2017-2019 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 __HICN_STRATEGY_DPO_CTX_H__
#define __HICN_STRATEGY_DPO_CTX_H__
#include <vnet/dpo/dpo.h>
#include <vnet/fib/fib_table.h>
#include "hicn.h"
#include "params.h"
#include "faces/face.h"
#define HICN_FIB_TABLE 0
#define DATA_LEN 8
#define NEXT_HOP_INVALID DPO_INVALID
#define INIT_SEQ 0
/*
* An hicn dpo is a list of next hops (face + weight).
*/
typedef struct __attribute__ ((packed)) hicn_dpo_ctx_s
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/* 8B*5 = 40B */
dpo_id_t next_hops[HICN_PARAM_FIB_ENTRY_NHOPS_MAX];
/* 40B + 4B = 44B */
u32 locks;
/* 44B + 1B = 45B */
u8 entry_count;
/* 45B + 1B = 46B */
/* Number of TFIB entries (stored at the end of the next_hops array */
u8 tfib_entry_count;
/* 46B + 2B = 48B */
u16 padding; /* To align to 8B */
#ifdef HICN_MAPME_NOTIFICATIONS
/* (8B) last acked update for IU/IN heuristic on producer */
f64 last_iu_ack;
#endif
/* (4B) last sequence number */
seq_t seq;
} hicn_dpo_ctx_t;
always_inline void
init_dpo_ctx (hicn_dpo_ctx_t * dpo_ctx)
{
dpo_id_t invalid = NEXT_HOP_INVALID;
for (int i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++)
{
dpo_ctx->next_hops[i] = invalid;
}
dpo_ctx->entry_count = 0;
dpo_ctx->locks = 0;
dpo_ctx->tfib_entry_count = 0;
#ifdef HICN_MAPME_NOTIFICATIONS
last_iu_ack = 0;
#endif
dpo_ctx->seq = INIT_SEQ;
}
STATIC_ASSERT (sizeof (hicn_dpo_ctx_t) <= CLIB_CACHE_LINE_BYTES,
"sizeof hicn_dpo_ctx_t is greater than 64B");
#endif /* // __HICN_STRATEGY_DPO_CTX_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables: eval: (c-set-style "gnu") End:
*/
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