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/*
* Copyright (c) 2020 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 __LCP_ADJ_DELEGATE_H__
#define __LCP_ADJ_DELEGATE_H__
#include <vppinfra/bihash_32_8.h>
typedef struct lcp_adj_key_t_
{
u32 sw_if_index;
u8 rewrite[28];
} lcp_adj_key_t;
STATIC_ASSERT (sizeof (lcp_adj_key_t) == 32, "LCP ADJ Key size changed");
typedef struct lcp_adj_kv_t_
{
union
{
BVT (clib_bihash_kv) kv;
struct
{
lcp_adj_key_t k;
u64 v;
};
};
} lcp_adj_kv_t;
STATIC_ASSERT (sizeof (lcp_adj_kv_t) == sizeof (BVT (clib_bihash_kv)),
"LCP ADJ Key size changed");
/**
* The table of adjacencies indexed by the rewrite string
*/
extern BVT (clib_bihash) lcp_adj_tbl;
static_always_inline void
lcp_adj_mk_key (const u8 *rewrite, u8 len, u32 sw_if_index, lcp_adj_key_t *key)
{
/*
* Construct the key from the provided rewrite, then pad with zeros
* to ensure the key does not have garbage bytes
*/
ASSERT (len <= sizeof (key->rewrite));
clib_memcpy_fast (key->rewrite, rewrite, len);
clib_memset (key->rewrite + len, 0, sizeof (key->rewrite) - len);
key->sw_if_index = sw_if_index;
}
static_always_inline adj_index_t
lcp_adj_lkup (const u8 *rewrite, u8 len, u32 sw_if_index)
{
lcp_adj_kv_t kv;
lcp_adj_mk_key (rewrite, len, sw_if_index, &kv.k);
if (!BV (clib_bihash_search_inline) (&lcp_adj_tbl, &kv.kv))
return (kv.v);
return (ADJ_INDEX_INVALID);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
#endif
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