1/*
 2 * net/tipc/addr.h: Include file for TIPC address utility routines
 3 *
 4 * Copyright (c) 2000-2006, 2018, 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#include <linux/types.h>
41#include <linux/tipc.h>
42#include <net/net_namespace.h>
43#include <net/netns/generic.h>
44#include "core.h"
45
46static inline u32 tipc_own_addr(struct net *net)
47{
48	return tipc_net(net)->node_addr;
49}
50
51static inline u8 *tipc_own_id(struct net *net)
52{
53	struct tipc_net *tn = tipc_net(net);
54
55	if (!strlen(tn->node_id_string))
56		return NULL;
57	return tn->node_id;
58}
59
60static inline char *tipc_own_id_string(struct net *net)
61{
62	return tipc_net(net)->node_id_string;
63}
64
65static inline u32 tipc_cluster_mask(u32 addr)
66{
67	return addr & TIPC_ZONE_CLUSTER_MASK;
68}
69
70static inline int tipc_node2scope(u32 node)
71{
72	return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;
73}
74
75static inline int tipc_scope2node(struct net *net, int sc)
76{
77	return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);
78}
 
 
79
80static inline int in_own_node(struct net *net, u32 addr)
81{
82	return addr == tipc_own_addr(net) || !addr;
 
 
 
 
83}
84
85bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);
86void tipc_set_node_id(struct net *net, u8 *id);
87void tipc_set_node_addr(struct net *net, u32 addr);
88char *tipc_nodeid2string(char *str, u8 *id);
89u32 tipc_node_id2hash(u8 *id128);
90
91#endif

 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
43static inline u32 tipc_zone_mask(u32 addr)
44{
45	return addr & TIPC_ZONE_MASK;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
46}
47
48static inline u32 tipc_cluster_mask(u32 addr)
49{
50	return addr & TIPC_CLUSTER_MASK;
51}
52
53static inline int in_own_cluster(u32 addr)
54{
55	return !((addr ^ tipc_own_addr) >> 12);
56}
57
58/**
59 * addr_domain - convert 2-bit scope value to equivalent message lookup domain
60 *
61 * Needed when address of a named message must be looked up a second time
62 * after a network hop.
63 */
64
65static inline u32 addr_domain(u32 sc)
66{
67	if (likely(sc == TIPC_NODE_SCOPE))
68		return tipc_own_addr;
69	if (sc == TIPC_CLUSTER_SCOPE)
70		return tipc_cluster_mask(tipc_own_addr);
71	return tipc_zone_mask(tipc_own_addr);
72}
73
74int tipc_addr_domain_valid(u32);
75int tipc_addr_node_valid(u32 addr);
76int tipc_in_scope(u32 domain, u32 addr);
77int tipc_addr_scope(u32 domain);
78char *tipc_addr_string_fill(char *string, u32 addr);
 
79#endif