projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b97bf3fd PL |
1 | /* |
| 2 | * net/tipc/addr.h: Include file for TIPC address utility routines | |
| 3 | * | |
| 4 | * Copyright (c) 2003-2005, Ericsson Research Canada | |
| 5 | * Copyright (c) 2004-2005, Wind River Systems | |
| 6 | * Copyright (c) 2005-2006, Ericsson AB | |
| 7 | * All rights reserved. | |
| 8 | * | |
| 9 | * Redistribution and use in source and binary forms, with or without | |
| 10 | * modification, are permitted provided that the following conditions are met: | |
| 11 | * | |
| 12 | * Redistributions of source code must retain the above copyright notice, this | |
| 13 | * list of conditions and the following disclaimer. | |
| 14 | * Redistributions in binary form must reproduce the above copyright notice, | |
| 15 | * this list of conditions and the following disclaimer in the documentation | |
| 16 | * and/or other materials provided with the distribution. | |
| 17 | * Neither the names of the copyright holders nor the names of its | |
| 18 | * contributors may be used to endorse or promote products derived from this | |
| 19 | * software without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
| 25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 31 | * POSSIBILITY OF SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 34 | #ifndef _TIPC_ADDR_H | |
| 35 | #define _TIPC_ADDR_H | |
| 36 | ||
| 37 | static inline u32 own_node(void) | |
| 38 | { | |
| 39 | return tipc_node(tipc_own_addr); | |
| 40 | } | |
| 41 | ||
| 42 | static inline u32 own_cluster(void) | |
| 43 | { | |
| 44 | return tipc_cluster(tipc_own_addr); | |
| 45 | } | |
| 46 | ||
| 47 | static inline u32 own_zone(void) | |
| 48 | { | |
| 49 | return tipc_zone(tipc_own_addr); | |
| 50 | } | |
| 51 | ||
| 52 | static inline int in_own_cluster(u32 addr) | |
| 53 | { | |
| 54 | return !((addr ^ tipc_own_addr) >> 12); | |
| 55 | } | |
| 56 | ||
| 57 | static inline int in_own_zone(u32 addr) | |
| 58 | { | |
| 59 | return !((addr ^ tipc_own_addr) >> 24); | |
| 60 | } | |
| 61 | ||
| 62 | static inline int is_slave(u32 addr) | |
| 63 | { | |
| 64 | return addr & 0x800; | |
| 65 | } | |
| 66 | ||
| 67 | static inline int may_route(u32 addr) | |
| 68 | { | |
| 69 | return(addr ^ tipc_own_addr) >> 11; | |
| 70 | } | |
| 71 | ||
| 72 | static inline int in_scope(u32 domain, u32 addr) | |
| 73 | { | |
| 74 | if (!domain || (domain == addr)) | |
| 75 | return 1; | |
| 76 | if (domain == (addr & 0xfffff000u)) /* domain <Z.C.0> */ | |
| 77 | return 1; | |
| 78 | if (domain == (addr & 0xff000000u)) /* domain <Z.0.0> */ | |
| 79 | return 1; | |
| 80 | return 0; | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * addr_scope - convert message lookup domain to equivalent 2-bit scope value | |
| 85 | */ | |
| 86 | ||
| 87 | static inline int addr_scope(u32 domain) | |
| 88 | { | |
| 89 | if (likely(!domain)) | |
| 90 | return TIPC_ZONE_SCOPE; | |
| 91 | if (tipc_node(domain)) | |
| 92 | return TIPC_NODE_SCOPE; | |
| 93 | if (tipc_cluster(domain)) | |
| 94 | return TIPC_CLUSTER_SCOPE; | |
| 95 | return TIPC_ZONE_SCOPE; | |
| 96 | } | |
| 97 | ||
| 98 | /** | |
| 99 | * addr_domain - convert 2-bit scope value to equivalent message lookup domain | |
| 100 | * | |
| 101 | * Needed when address of a named message must be looked up a second time | |
| 102 | * after a network hop. | |
| 103 | */ | |
| 104 | ||
| 105 | static inline int addr_domain(int sc) | |
| 106 | { | |
| 107 | if (likely(sc == TIPC_NODE_SCOPE)) | |
| 108 | return tipc_own_addr; | |
| 109 | if (sc == TIPC_CLUSTER_SCOPE) | |
| 110 | return tipc_addr(tipc_zone(tipc_own_addr), | |
| 111 | tipc_cluster(tipc_own_addr), 0); | |
| 112 | return tipc_addr(tipc_zone(tipc_own_addr), 0, 0); | |
| 113 | } | |
| 114 | ||
| 115 | static inline char *addr_string_fill(char *string, u32 addr) | |
| 116 | { | |
| 117 | snprintf(string, 16, "<%u.%u.%u>", | |
| 118 | tipc_zone(addr), tipc_cluster(addr), tipc_node(addr)); | |
| 119 | return string; | |
| 120 | } | |
| 121 | ||
| 122 | int addr_domain_valid(u32); | |
| 123 | int addr_node_valid(u32 addr); | |
| 124 | ||
| 125 | #endif |