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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 __CNAT_INLINE_H__
#define __CNAT_INLINE_H__
#include <cnat/cnat_types.h>
always_inline u32
cnat_timestamp_new (f64 t)
{
u32 index;
cnat_timestamp_t *ts;
clib_rwlock_writer_lock (&cnat_main.ts_lock);
pool_get (cnat_timestamps, ts);
ts->last_seen = t;
ts->lifetime = cnat_main.session_max_age;
ts->refcnt = CNAT_TIMESTAMP_INIT_REFCNT;
index = ts - cnat_timestamps;
clib_rwlock_writer_unlock (&cnat_main.ts_lock);
return index;
}
always_inline void
cnat_timestamp_inc_refcnt (u32 index)
{
clib_rwlock_reader_lock (&cnat_main.ts_lock);
cnat_timestamp_t *ts = pool_elt_at_index (cnat_timestamps, index);
ts->refcnt++;
clib_rwlock_reader_unlock (&cnat_main.ts_lock);
}
always_inline void
cnat_timestamp_update (u32 index, f64 t)
{
clib_rwlock_reader_lock (&cnat_main.ts_lock);
cnat_timestamp_t *ts = pool_elt_at_index (cnat_timestamps, index);
ts->last_seen = t;
clib_rwlock_reader_unlock (&cnat_main.ts_lock);
}
always_inline void
cnat_timestamp_set_lifetime (u32 index, u16 lifetime)
{
clib_rwlock_reader_lock (&cnat_main.ts_lock);
cnat_timestamp_t *ts = pool_elt_at_index (cnat_timestamps, index);
ts->lifetime = lifetime;
clib_rwlock_reader_unlock (&cnat_main.ts_lock);
}
always_inline f64
cnat_timestamp_exp (u32 index)
{
f64 t;
if (INDEX_INVALID == index)
return -1;
clib_rwlock_reader_lock (&cnat_main.ts_lock);
cnat_timestamp_t *ts = pool_elt_at_index (cnat_timestamps, index);
t = ts->last_seen + (f64) ts->lifetime;
clib_rwlock_reader_unlock (&cnat_main.ts_lock);
return t;
}
always_inline void
cnat_timestamp_free (u32 index)
{
if (INDEX_INVALID == index)
return;
clib_rwlock_writer_lock (&cnat_main.ts_lock);
cnat_timestamp_t *ts = pool_elt_at_index (cnat_timestamps, index);
ts->refcnt--;
if (0 == ts->refcnt)
pool_put (cnat_timestamps, ts);
clib_rwlock_writer_unlock (&cnat_main.ts_lock);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
#endif
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