summaryrefslogtreecommitdiffstats
path: root/extras/deprecated/vppinfra/cuckoo_8_8.h
diff options
context:
space:
mode:
authorDave Barach <dave@barachs.net>2020-04-22 10:02:31 -0400
committerFlorin Coras <florin.coras@gmail.com>2020-04-22 19:58:20 +0000
commit053d0935244843199c433e92df666b4f79007727 (patch)
tree82fa449bd70f36a6d5ac75abcb3b89d8685bc868 /extras/deprecated/vppinfra/cuckoo_8_8.h
parentf932f97d7d8e55ab62aba0f18d59a9622c21efd8 (diff)
vppinfra: move unused code to extras/deprecated/vppinfra
Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Id28299a188feefa1899d835fd499f018af95d81b
Diffstat (limited to 'extras/deprecated/vppinfra/cuckoo_8_8.h')
-rw-r--r--extras/deprecated/vppinfra/cuckoo_8_8.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/extras/deprecated/vppinfra/cuckoo_8_8.h b/extras/deprecated/vppinfra/cuckoo_8_8.h
new file mode 100644
index 00000000000..67af79c0e50
--- /dev/null
+++ b/extras/deprecated/vppinfra/cuckoo_8_8.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2017 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.
+ */
+#undef CLIB_CUCKOO_TYPE
+
+#define CLIB_CUCKOO_TYPE _8_8
+#define CLIB_CUCKOO_KVP_PER_BUCKET (4)
+#define CLIB_CUCKOO_LOG2_KVP_PER_BUCKET (2)
+#define CLIB_CUCKOO_BFS_MAX_STEPS (2000)
+#define CLIB_CUCKOO_BFS_MAX_PATH_LENGTH (8)
+
+#ifndef __included_cuckoo_8_8_h__
+#define __included_cuckoo_8_8_h__
+
+#include <vppinfra/heap.h>
+#include <vppinfra/format.h>
+#include <vppinfra/pool.h>
+#include <vppinfra/xxhash.h>
+#include <vppinfra/cuckoo_debug.h>
+#include <vppinfra/cuckoo_common.h>
+
+#undef CLIB_CUCKOO_OPTIMIZE_PREFETCH
+#undef CLIB_CUCKOO_OPTIMIZE_UNROLL
+#undef CLIB_CUCKOO_OPTIMIZE_USE_COUNT_LIMITS_SEARCH
+#define CLIB_CUCKOO_OPTIMIZE_PREFETCH 1
+#define CLIB_CUCKOO_OPTIMIZE_UNROLL 1
+#define CLIB_CUCKOO_OPTIMIZE_USE_COUNT_LIMITS_SEARCH 1
+
+#if __SSE4_2__ && !defined (__i386__)
+#include <x86intrin.h>
+#endif
+
+/** 8 octet key, 8 octet key value pair */
+typedef struct
+{
+ u64 key; /**< the key */
+ u64 value; /**< the value */
+} clib_cuckoo_kv_8_8_t;
+
+/** Decide if a clib_cuckoo_kv_8_8_t instance is free
+ @param v- pointer to the (key,value) pair
+*/
+always_inline int
+clib_cuckoo_kv_is_free_8_8 (const clib_cuckoo_kv_8_8_t * v)
+{
+ if (v->key == ~0ULL && v->value == ~0ULL)
+ return 1;
+ return 0;
+}
+
+always_inline void
+clib_cuckoo_kv_set_free_8_8 (clib_cuckoo_kv_8_8_t * v)
+{
+ clib_memset (v, 0xff, sizeof (*v));
+}
+
+/** Format a clib_cuckoo_kv_8_8_t instance
+ @param s - u8 * vector under construction
+ @param args (vararg) - the (key,value) pair to format
+ @return s - the u8 * vector under construction
+*/
+always_inline u8 *
+format_cuckoo_kvp_8_8 (u8 * s, va_list * args)
+{
+ clib_cuckoo_kv_8_8_t *v = va_arg (*args, clib_cuckoo_kv_8_8_t *);
+
+ if (clib_cuckoo_kv_is_free_8_8 (v))
+ {
+ s = format (s, " -- empty -- ");
+ }
+ else
+ {
+ s = format (s, "key %llu value %llu", v->key, v->value);
+ }
+ return s;
+}
+
+always_inline u64
+clib_cuckoo_hash_8_8 (clib_cuckoo_kv_8_8_t * v)
+{
+#if defined(clib_crc32c_uses_intrinsics) && !defined (__i386__)
+ return crc32_u64 (0, v->key);
+#else
+ return clib_xxhash (v->key);
+#endif
+}
+
+/** Compare two clib_cuckoo_kv_8_8_t instances
+ @param a - first key
+ @param b - second key
+*/
+always_inline int
+clib_cuckoo_key_compare_8_8 (u64 a, u64 b)
+{
+ return a == b;
+}
+
+#undef __included_cuckoo_template_h__
+#include <vppinfra/cuckoo_template.h>
+
+#endif /* __included_cuckoo_8_8_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */