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-rw-r--r--src/plugins/cnat/cnat_inline.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/plugins/cnat/cnat_inline.h b/src/plugins/cnat/cnat_inline.h
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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