]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - net/tipc/addr.c
2 * net/tipc/addr.c: TIPC address utility routines
4 * Copyright (c) 2000-2006, Ericsson AB
5 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
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.
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.
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.
41 * tipc_addr_domain_valid - validates a network domain address
43 * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
44 * where Z, C, and N are non-zero.
46 * Returns 1 if domain address is valid, otherwise 0
48 int tipc_addr_domain_valid(u32 addr
)
50 u32 n
= tipc_node(addr
);
51 u32 c
= tipc_cluster(addr
);
52 u32 z
= tipc_zone(addr
);
62 * tipc_addr_node_valid - validates a proposed network address for this node
64 * Accepts <Z.C.N>, where Z, C, and N are non-zero.
66 * Returns 1 if address can be used, otherwise 0
68 int tipc_addr_node_valid(u32 addr
)
70 return tipc_addr_domain_valid(addr
) && tipc_node(addr
);
73 int tipc_in_scope(u32 domain
, u32 addr
)
75 if (!domain
|| (domain
== addr
))
77 if (domain
== tipc_cluster_mask(addr
)) /* domain <Z.C.0> */
79 if (domain
== tipc_zone_mask(addr
)) /* domain <Z.0.0> */
85 * tipc_addr_scope - convert message lookup domain to a 2-bit scope value
87 int tipc_addr_scope(u32 domain
)
90 return TIPC_ZONE_SCOPE
;
91 if (tipc_node(domain
))
92 return TIPC_NODE_SCOPE
;
93 if (tipc_cluster(domain
))
94 return TIPC_CLUSTER_SCOPE
;
95 return TIPC_ZONE_SCOPE
;
98 char *tipc_addr_string_fill(char *string
, u32 addr
)
100 snprintf(string
, 16, "<%u.%u.%u>",
101 tipc_zone(addr
), tipc_cluster(addr
), tipc_node(addr
));