/* * net/tipc/addr.c: TIPC address utility routines * * Copyright (c) 2000-2006, Ericsson AB * Copyright (c) 2004-2005, 2010-2011, 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 "addr.h" /** * 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. * * 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); 	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. * * 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 == tipc_cluster_mask(addr)) /* domain <Z.C.0> */		return 1;	if (domain == tipc_zone_mask(addr)) /* 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;}