/* * 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 own_node(void) { return tipc_node(tipc_own_addr); } static inline u32 own_cluster(void) { return tipc_cluster(tipc_own_addr); } static inline u32 own_zone(void) { return tipc_zone(tipc_own_addr); } static inline int in_own_cluster(u32 addr) { return !((addr ^ tipc_own_addr) >> 12); } static inline int in_own_zone(u32 addr) { return !((addr ^ tipc_own_addr) >> 24); } static inline int is_slave(u32 addr) { return addr & 0x800; } static inline int may_route(u32 addr) { return(addr ^ tipc_own_addr) >> 11; } static inline int 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; } /** * addr_scope - convert message lookup domain to equivalent 2-bit scope value */ static inline int 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; } /** * 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 int addr_domain(int sc) { if (likely(sc == TIPC_NODE_SCOPE)) return tipc_own_addr; if (sc == TIPC_CLUSTER_SCOPE) return tipc_addr(tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), 0); return tipc_addr(tipc_zone(tipc_own_addr), 0, 0); } static inline char *addr_string_fill(char *string, u32 addr) { snprintf(string, 16, "<%u.%u.%u>", tipc_zone(addr), tipc_cluster(addr), tipc_node(addr)); return string; } int tipc_addr_domain_valid(u32); int tipc_addr_node_valid(u32 addr); #endif