Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
addr.h
Go to the documentation of this file.
1 /*
2  * net/tipc/addr.h: Include file for TIPC address utility routines
3  *
4  * Copyright (c) 2000-2006, Ericsson AB
5  * Copyright (c) 2004-2005, Wind River Systems
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. Neither the names of the copyright holders nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * Alternatively, this software may be distributed under the terms of the
21  * GNU General Public License ("GPL") version 2 as published by the Free
22  * Software Foundation.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34  * POSSIBILITY OF SUCH DAMAGE.
35  */
36 
37 #ifndef _TIPC_ADDR_H
38 #define _TIPC_ADDR_H
39 
40 #define TIPC_ZONE_MASK 0xff000000u
41 #define TIPC_CLUSTER_MASK 0xfffff000u
42 
43 static inline u32 tipc_zone_mask(u32 addr)
44 {
45  return addr & TIPC_ZONE_MASK;
46 }
47 
48 static inline u32 tipc_cluster_mask(u32 addr)
49 {
50  return addr & TIPC_CLUSTER_MASK;
51 }
52 
53 static inline int in_own_cluster_exact(u32 addr)
54 {
55  return !((addr ^ tipc_own_addr) >> 12);
56 }
57 
61 static inline int in_own_node(u32 addr)
62 {
63  return (addr == tipc_own_addr) || !addr;
64 }
65 
69 static inline int in_own_cluster(u32 addr)
70 {
71  return in_own_cluster_exact(addr) || !addr;
72 }
73 
80 static inline u32 addr_domain(u32 sc)
81 {
82  if (likely(sc == TIPC_NODE_SCOPE))
83  return tipc_own_addr;
84  if (sc == TIPC_CLUSTER_SCOPE)
85  return tipc_cluster_mask(tipc_own_addr);
86  return tipc_zone_mask(tipc_own_addr);
87 }
88 
90 int tipc_addr_node_valid(u32 addr);
91 int tipc_in_scope(u32 domain, u32 addr);
92 int tipc_addr_scope(u32 domain);
93 char *tipc_addr_string_fill(char *string, u32 addr);
94 #endif