1 /* 2 * net/tipc/addr.h: Include file for TIPC address utility routines 3 * 4 * Copyright (c) 2000-2006, Ericsson AB 5 * Copyright (c) 2004-2005, Wind River Systems 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the names of the copyright holders nor the names of its 17 * contributors may be used to endorse or promote products derived from 18 * this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #ifndef _TIPC_ADDR_H 38 #define _TIPC_ADDR_H 39 40 #define TIPC_ZONE_MASK 0xff000000u 41 #define TIPC_CLUSTER_MASK 0xfffff000u 42 43 static inline u32 tipc_zone_mask(u32 addr) 44 { 45 return addr & TIPC_ZONE_MASK; 46 } 47 48 static inline u32 tipc_cluster_mask(u32 addr) 49 { 50 return addr & TIPC_CLUSTER_MASK; 51 } 52 53 static inline int in_own_cluster_exact(u32 addr) 54 { 55 return !((addr ^ tipc_own_addr) >> 12); 56 } 57 58 /** 59 * in_own_node - test for node inclusion; <0.0.0> always matches 60 */ 61 static inline int in_own_node(u32 addr) 62 { 63 return (addr == tipc_own_addr) || !addr; 64 } 65 66 /** 67 * in_own_cluster - test for cluster inclusion; <0.0.0> always matches 68 */ 69 static inline int in_own_cluster(u32 addr) 70 { 71 return in_own_cluster_exact(addr) || !addr; 72 } 73 74 /** 75 * addr_domain - convert 2-bit scope value to equivalent message lookup domain 76 * 77 * Needed when address of a named message must be looked up a second time 78 * after a network hop. 79 */ 80 static inline u32 addr_domain(u32 sc) 81 { 82 if (likely(sc == TIPC_NODE_SCOPE)) 83 return tipc_own_addr; 84 if (sc == TIPC_CLUSTER_SCOPE) 85 return tipc_cluster_mask(tipc_own_addr); 86 return tipc_zone_mask(tipc_own_addr); 87 } 88 89 int tipc_addr_domain_valid(u32); 90 int tipc_addr_node_valid(u32 addr); 91 int tipc_in_scope(u32 domain, u32 addr); 92 int tipc_addr_scope(u32 domain); 93 char *tipc_addr_string_fill(char *string, u32 addr); 94 #endif 95