/* * 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 #include "addr.h" #include "core.h" /** * in_own_cluster - test for cluster inclusion; <0.0.0> always matches */ int in_own_cluster(struct net *net, u32 addr) { return in_own_cluster_exact(net, addr) || !addr; } int in_own_cluster_exact(struct net *net, u32 addr) { struct tipc_net *tn = net_generic(net, tipc_net_id); return !((addr ^ tn->own_addr) >> 12); } /** * in_own_node - test for node inclusion; <0.0.0> always matches */ int in_own_node(struct net *net, u32 addr) { struct tipc_net *tn = net_generic(net, tipc_net_id); return (addr == tn->own_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. */ u32 addr_domain(struct net *net, u32 sc) { struct tipc_net *tn = net_generic(net, tipc_net_id); if (likely(sc == TIPC_NODE_SCOPE)) return tn->own_addr; if (sc == TIPC_CLUSTER_SCOPE) return tipc_cluster_mask(tn->own_addr); return tipc_zone_mask(tn->own_addr); } /** * tipc_addr_domain_valid - validates a network domain address * * Accepts , , , 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 , 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 */ return 1; if (domain == tipc_zone_mask(addr)) /* domain */ 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; } ue='20'>20space:mode:
Diffstat (limited to 'tools/perf')