/*
* net/tipc/ref.h: Include file for TIPC object registry code
- *
- * Copyright (c) 2003-2005, Ericsson Research Canada
+ *
+ * Copyright (c) 1991-2006, Ericsson AB
* Copyright (c) 2005, Wind River Systems
- * Copyright (c) 2005-2006, Ericsson AB
* All rights reserved.
*
- * Redistribution and use in source and binary forms, with or without
+ * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
*
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
* @lock: spinlock controlling access to object
* @data: reference value associated with object (or link to next unused entry)
*/
-
+
struct reference {
void *object;
spinlock_t lock;
};
/**
- * struct ref_table - table of TIPC object reference entries
+ * struct tipc_ref_table - table of TIPC object reference entries
* @entries: pointer to array of reference entries
* @index_mask: bitmask for array index portion of reference values
* @first_free: array index of first unused object reference entry
u32 last_free;
};
-extern struct ref_table ref_table;
+extern struct ref_table tipc_ref_table;
-int ref_table_init(u32 requested_size, u32 start);
-void ref_table_stop(void);
+int tipc_ref_table_init(u32 requested_size, u32 start);
+void tipc_ref_table_stop(void);
-u32 ref_acquire(void *object, spinlock_t **lock);
-void ref_discard(u32 ref);
+u32 tipc_ref_acquire(void *object, spinlock_t **lock);
+void tipc_ref_discard(u32 ref);
/**
- * ref_lock - lock referenced object and return pointer to it
+ * tipc_ref_lock - lock referenced object and return pointer to it
*/
-static inline void *ref_lock(u32 ref)
+static inline void *tipc_ref_lock(u32 ref)
{
- if (likely(ref_table.entries)) {
+ if (likely(tipc_ref_table.entries)) {
struct reference *r =
- &ref_table.entries[ref & ref_table.index_mask];
+ &tipc_ref_table.entries[ref & tipc_ref_table.index_mask];
spin_lock_bh(&r->lock);
if (likely(r->data.reference == ref))
return r->object;
spin_unlock_bh(&r->lock);
}
- return 0;
+ return NULL;
}
/**
- * ref_unlock - unlock referenced object
+ * tipc_ref_unlock - unlock referenced object
*/
-static inline void ref_unlock(u32 ref)
+static inline void tipc_ref_unlock(u32 ref)
{
- if (likely(ref_table.entries)) {
+ if (likely(tipc_ref_table.entries)) {
struct reference *r =
- &ref_table.entries[ref & ref_table.index_mask];
+ &tipc_ref_table.entries[ref & tipc_ref_table.index_mask];
if (likely(r->data.reference == ref))
spin_unlock_bh(&r->lock);
else
- err("ref_unlock() invoked using obsolete reference\n");
+ err("tipc_ref_unlock() invoked using obsolete reference\n");
}
}
/**
- * ref_deref - return pointer referenced object (without locking it)
+ * tipc_ref_deref - return pointer referenced object (without locking it)
*/
-static inline void *ref_deref(u32 ref)
+static inline void *tipc_ref_deref(u32 ref)
{
- if (likely(ref_table.entries)) {
- struct reference *r =
- &ref_table.entries[ref & ref_table.index_mask];
+ if (likely(tipc_ref_table.entries)) {
+ struct reference *r =
+ &tipc_ref_table.entries[ref & tipc_ref_table.index_mask];
if (likely(r->data.reference == ref))
return r->object;
}
- return 0;
+ return NULL;
}
#endif