mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
a02cec2155
Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
|
|
* net/tipc/addr.c: 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.
|
|
*/
|
|
|
|
#include "core.h"
|
|
#include "dbg.h"
|
|
#include "addr.h"
|
|
#include "zone.h"
|
|
#include "cluster.h"
|
|
#include "net.h"
|
|
|
|
u32 tipc_get_addr(void)
|
|
{
|
|
return tipc_own_addr;
|
|
}
|
|
|
|
/**
|
|
* tipc_addr_domain_valid - validates a network domain address
|
|
*
|
|
* Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
|
|
* where Z, C, and N are non-zero and do not exceed the configured limits.
|
|
*
|
|
* Returns 1 if domain address is valid, otherwise 0
|
|
*/
|
|
|
|
int tipc_addr_domain_valid(u32 addr)
|
|
{
|
|
u32 n = tipc_node(addr);
|
|
u32 c = tipc_cluster(addr);
|
|
u32 z = tipc_zone(addr);
|
|
u32 max_nodes = tipc_max_nodes;
|
|
|
|
if (is_slave(addr))
|
|
max_nodes = LOWEST_SLAVE + tipc_max_slaves;
|
|
if (n > max_nodes)
|
|
return 0;
|
|
if (c > tipc_max_clusters)
|
|
return 0;
|
|
if (z > tipc_max_zones)
|
|
return 0;
|
|
|
|
if (n && (!z || !c))
|
|
return 0;
|
|
if (c && !z)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* tipc_addr_node_valid - validates a proposed network address for this node
|
|
*
|
|
* Accepts <Z.C.N>, where Z, C, and N are non-zero and do not exceed
|
|
* the configured limits.
|
|
*
|
|
* Returns 1 if address can be used, otherwise 0
|
|
*/
|
|
|
|
int tipc_addr_node_valid(u32 addr)
|
|
{
|
|
return tipc_addr_domain_valid(addr) && tipc_node(addr);
|
|
}
|
|
|
|
int tipc_in_scope(u32 domain, u32 addr)
|
|
{
|
|
if (!domain || (domain == addr))
|
|
return 1;
|
|
if (domain == (addr & 0xfffff000u)) /* domain <Z.C.0> */
|
|
return 1;
|
|
if (domain == (addr & 0xff000000u)) /* domain <Z.0.0> */
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* tipc_addr_scope - convert message lookup domain to a 2-bit scope value
|
|
*/
|
|
|
|
int tipc_addr_scope(u32 domain)
|
|
{
|
|
if (likely(!domain))
|
|
return TIPC_ZONE_SCOPE;
|
|
if (tipc_node(domain))
|
|
return TIPC_NODE_SCOPE;
|
|
if (tipc_cluster(domain))
|
|
return TIPC_CLUSTER_SCOPE;
|
|
return TIPC_ZONE_SCOPE;
|
|
}
|
|
|
|
char *tipc_addr_string_fill(char *string, u32 addr)
|
|
{
|
|
snprintf(string, 16, "<%u.%u.%u>",
|
|
tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
|
|
return string;
|
|
}
|