a3796f895f
Introduces a pair of helper routines that convert the network address for a TIPC node into the network address for its cluster or zone. This is a cosmetic change designed to avoid future errors caused by the incorrect use of address bitmasks, and does not alter the existing operation of TIPC. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/*
|
|
* 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
|
|
|
|
static inline u32 tipc_zone_mask(u32 addr)
|
|
{
|
|
return addr & 0xff000000u;
|
|
}
|
|
|
|
static inline u32 tipc_cluster_mask(u32 addr)
|
|
{
|
|
return addr & 0xfffff000u;
|
|
}
|
|
|
|
static inline int in_own_cluster(u32 addr)
|
|
{
|
|
return !((addr ^ tipc_own_addr) >> 12);
|
|
}
|
|
|
|
/**
|
|
* 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
|