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928df1880e
Publications for TIPC_CLUSTER_SCOPE and TIPC_ZONE_SCOPE are in all aspects handled the same way, both on the publishing node and on the receiving nodes. Despite previous ambitions to the contrary, this is never going to change, so we take the conseqeunce of this and obsolete TIPC_ZONE_SCOPE and related macros/functions. Whenever a user is doing a bind() or a sendmsg() attempt using ZONE_SCOPE we translate this internally to CLUSTER_SCOPE, while we remain compatible with users and remote nodes still using ZONE_SCOPE. Furthermore, the non-formalized scope value 0 has always been permitted for use during lookup, with the same meaning as ZONE_SCOPE/CLUSTER_SCOPE. We now permit it even as binding scope, but for compatibility reasons we choose to not change the value of TIPC_CLUSTER_SCOPE. Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/*
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* net/tipc/addr.c: TIPC address utility routines
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*
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* Copyright (c) 2000-2006, Ericsson AB
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* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include "addr.h"
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#include "core.h"
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/**
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* in_own_cluster - test for cluster inclusion; <0.0.0> always matches
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*/
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int in_own_cluster(struct net *net, u32 addr)
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{
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return in_own_cluster_exact(net, addr) || !addr;
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}
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int in_own_cluster_exact(struct net *net, u32 addr)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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return !((addr ^ tn->own_addr) >> 12);
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}
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/**
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* in_own_node - test for node inclusion; <0.0.0> always matches
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*/
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int in_own_node(struct net *net, u32 addr)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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return (addr == tn->own_addr) || !addr;
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}
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/**
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* tipc_addr_domain_valid - validates a network domain address
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*
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* Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
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* where Z, C, and N are non-zero.
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*
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* Returns 1 if domain address is valid, otherwise 0
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*/
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int tipc_addr_domain_valid(u32 addr)
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{
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u32 n = tipc_node(addr);
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u32 c = tipc_cluster(addr);
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u32 z = tipc_zone(addr);
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if (n && (!z || !c))
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return 0;
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if (c && !z)
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return 0;
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return 1;
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}
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/**
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* tipc_addr_node_valid - validates a proposed network address for this node
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*
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* Accepts <Z.C.N>, where Z, C, and N are non-zero.
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*
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* Returns 1 if address can be used, otherwise 0
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*/
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int tipc_addr_node_valid(u32 addr)
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{
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return tipc_addr_domain_valid(addr) && tipc_node(addr);
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}
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int tipc_in_scope(u32 domain, u32 addr)
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{
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if (!domain || (domain == addr))
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return 1;
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if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */
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return 1;
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if (domain == tipc_zone_mask(addr)) /* domain <Z.0.0> */
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return 1;
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return 0;
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}
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char *tipc_addr_string_fill(char *string, u32 addr)
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{
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snprintf(string, 16, "<%u.%u.%u>",
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tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
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return string;
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}
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