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/*
* net/tipc/addr.h: Include file for TIPC address utility routines
*
* Copyright (c) 2000-2006, Ericsson AB
* Copyright (c) 2004-2005, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 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
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TIPC_ADDR_H
#define _TIPC_ADDR_H
#define TIPC_ZONE_MASK 0xff000000u
#define TIPC_CLUSTER_MASK 0xfffff000u
static inline u32 tipc_zone_mask(u32 addr)
{
return addr & TIPC_ZONE_MASK;
}
static inline u32 tipc_cluster_mask(u32 addr)
{
return addr & TIPC_CLUSTER_MASK;
}
static inline int in_own_cluster_exact(u32 addr)
{
return !((addr ^ tipc_own_addr) >> 12);
}
/**
* in_own_node - test for node inclusion; <0.0.0> always matches
*/
static inline int in_own_node(u32 addr)
{
return (addr == tipc_own_addr) || !addr;
}
/**
* in_own_cluster - test for cluster inclusion; <0.0.0> always matches
*/
static inline int in_own_cluster(u32 addr)
{
return in_own_cluster_exact(addr) || !addr;
}
/**
* addr_domain - convert 2-bit scope value to equivalent message lookup domain
*
* Needed when address of a named message must be looked up a second time
* after a network hop.
*/
static inline u32 addr_domain(u32 sc)
{
if (likely(sc == TIPC_NODE_SCOPE))
return tipc_own_addr;
if (sc == TIPC_CLUSTER_SCOPE)
return tipc_cluster_mask(tipc_own_addr);
return tipc_zone_mask(tipc_own_addr);
}
int tipc_addr_domain_valid(u32);
int tipc_addr_node_valid(u32 addr);
int tipc_in_scope(u32 domain, u32 addr);
int tipc_addr_scope(u32 domain);
char *tipc_addr_string_fill(char *string, u32 addr);
#endif
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