[dpdk-dev] [PATCH] hash: move rte_hash structure to C file and make it internal

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

rte_hash structure should not be a public structure,
and therefore it should be moved to the C file and be declared
as internal. rte_hash_hash implementation is also moved
to the C file, as it uses the structure.

This patch also removes part of a unit test that was checking
a field of the structure.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 app/test/test_hash.c       |  6 +-----
 lib/librte_hash/rte_hash.c | 30 +++++++++++++++++++++++++++++-
 lib/librte_hash/rte_hash.h | 35 +++++------------------------------
 3 files changed, 35 insertions(+), 36 deletions(-)

diff --git a/app/test/test_hash.c b/app/test/test_hash.c
index 4ecb11b..4300de9 100644
--- a/app/test/test_hash.c
+++ b/app/test/test_hash.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -1110,10 +1110,6 @@ test_hash_creation_with_good_parameters(void)
 		printf("Creating hash with null hash_func failed\n");
 		return -1;
 	}
-	if (handle->hash_func == NULL) {
-		printf("Hash function should have been DEFAULT_HASH_FUNC\n");
-		return -1;
-	}
 
 	/* this test is trying to create a hash with the same name as previous one.
 	 * this should return a pointer to the hash we previously created.
diff --git a/lib/librte_hash/rte_hash.c b/lib/librte_hash/rte_hash.c
index 67dff5b..5100a75 100644
--- a/lib/librte_hash/rte_hash.c
+++ b/lib/librte_hash/rte_hash.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -92,6 +92,27 @@ EAL_REGISTER_TAILQ(rte_hash_tailq)
 /* The high bit is always set in real signatures */
 #define NULL_SIGNATURE          0
 
+struct rte_hash {
+	char name[RTE_HASH_NAMESIZE];	/**< Name of the hash. */
+	uint32_t entries;		/**< Total table entries. */
+	uint32_t bucket_entries;	/**< Bucket entries. */
+	uint32_t key_len;		/**< Length of hash key. */
+	rte_hash_function hash_func;	/**< Function used to calculate hash. */
+	uint32_t hash_func_init_val;	/**< Init value used by hash_func. */
+	uint32_t num_buckets;		/**< Number of buckets in table. */
+	uint32_t bucket_bitmask;	/**< Bitmask for getting bucket index
+							from hash signature. */
+	hash_sig_t sig_msb;	/**< MSB is always set in valid signatures. */
+	uint8_t *sig_tbl;	/**< Flat array of hash signature buckets. */
+	uint32_t sig_tbl_bucket_size;	/**< Signature buckets may be padded for
+					   alignment reasons, and this is the
+					   bucket size used by sig_tbl. */
+	uint8_t *key_tbl;	/**< Flat array of key value buckets. */
+	uint32_t key_tbl_key_size;	/**< Keys may be padded for alignment
+					   reasons, and this is the key size
+					   used	by key_tbl. */
+};
+
 /* Returns a pointer to the first signature in specified bucket. */
 static inline hash_sig_t *
 get_sig_tbl_bucket(const struct rte_hash *h, uint32_t bucket_index)
@@ -291,6 +312,13 @@ rte_hash_free(struct rte_hash *h)
 	rte_free(te);
 }
 
+hash_sig_t
+rte_hash_hash(const struct rte_hash *h, const void *key)
+{
+	/* calc hash result by key */
+	return h->hash_func(key, h->key_len, h->hash_func_init_val);
+}
+
 static inline int32_t
 __rte_hash_add_key_with_hash(const struct rte_hash *h,
 				const void *key, hash_sig_t sig)
diff --git a/lib/librte_hash/rte_hash.h b/lib/librte_hash/rte_hash.h
index 821a9d4..da0a00a 100644
--- a/lib/librte_hash/rte_hash.h
+++ b/lib/librte_hash/rte_hash.h
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -41,7 +41,6 @@
  */
 
 #include <stdint.h>
-#include <sys/queue.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -84,27 +83,8 @@ struct rte_hash_parameters {
 	int socket_id;			/**< NUMA Socket ID for memory. */
 };
 
-/** A hash table structure. */
-struct rte_hash {
-	char name[RTE_HASH_NAMESIZE];	/**< Name of the hash. */
-	uint32_t entries;		/**< Total table entries. */
-	uint32_t bucket_entries;	/**< Bucket entries. */
-	uint32_t key_len;		/**< Length of hash key. */
-	rte_hash_function hash_func;	/**< Function used to calculate hash. */
-	uint32_t hash_func_init_val;	/**< Init value used by hash_func. */
-	uint32_t num_buckets;		/**< Number of buckets in table. */
-	uint32_t bucket_bitmask;	/**< Bitmask for getting bucket index
-							from hash signature. */
-	hash_sig_t sig_msb;	/**< MSB is always set in valid signatures. */
-	uint8_t *sig_tbl;	/**< Flat array of hash signature buckets. */
-	uint32_t sig_tbl_bucket_size;	/**< Signature buckets may be padded for
-					   alignment reasons, and this is the
-					   bucket size used by sig_tbl. */
-	uint8_t *key_tbl;	/**< Flat array of key value buckets. */
-	uint32_t key_tbl_key_size;	/**< Keys may be padded for alignment
-					   reasons, and this is the key size
-					   used	by key_tbl. */
-};
+/** @internal A hash table structure. */
+struct rte_hash;
 
 /**
  * Create a new hash table.
@@ -262,7 +242,6 @@ int32_t
 rte_hash_lookup_with_hash(const struct rte_hash *h,
 				const void *key, hash_sig_t sig);
 
-
 /**
  * Calc a hash value by key. This operation is not multi-process safe.
  *
@@ -273,12 +252,8 @@ rte_hash_lookup_with_hash(const struct rte_hash *h,
  * @return
  *   - hash value
  */
-static inline hash_sig_t
-rte_hash_hash(const struct rte_hash *h, const void *key)
-{
-	/* calc hash result by key */
-	return h->hash_func(key, h->key_len, h->hash_func_init_val);
-}
+hash_sig_t
+rte_hash_hash(const struct rte_hash *h, const void *key);
 
 #define rte_hash_lookup_multi rte_hash_lookup_bulk
 /**
-- 
2.4.2