1/* 2 * lib/route/rtnl.c Routing Netlink 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation version 2.1 7 * of the License. 8 * 9 * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch> 10 */ 11 12/** 13 * @defgroup rtnl Routing Family 14 * @{ 15 */ 16 17#include <netlink-local.h> 18#include <netlink/netlink.h> 19#include <netlink/utils.h> 20#include <netlink/route/rtnl.h> 21 22/** 23 * @name Sending 24 * @{ 25 */ 26 27/** 28 * Send routing netlink request message 29 * @arg sk Netlink socket. 30 * @arg type Netlink message type. 31 * @arg family Address family. 32 * @arg flags Additional netlink message flags. 33 * 34 * Fills out a routing netlink request message and sends it out 35 * using nl_send_simple(). 36 * 37 * @return 0 on success or a negative error code. 38 */ 39int nl_rtgen_request(struct nl_sock *sk, int type, int family, int flags) 40{ 41 struct rtgenmsg gmsg = { 42 .rtgen_family = family, 43 }; 44 45 return nl_send_simple(sk, type, flags, &gmsg, sizeof(gmsg)); 46} 47 48/** @} */ 49 50/** 51 * @name Routing Type Translations 52 * @{ 53 */ 54 55static struct trans_tbl rtntypes[] = { 56 __ADD(RTN_UNSPEC,unspec) 57 __ADD(RTN_UNICAST,unicast) 58 __ADD(RTN_LOCAL,local) 59 __ADD(RTN_BROADCAST,broadcast) 60 __ADD(RTN_ANYCAST,anycast) 61 __ADD(RTN_MULTICAST,multicast) 62 __ADD(RTN_BLACKHOLE,blackhole) 63 __ADD(RTN_UNREACHABLE,unreachable) 64 __ADD(RTN_PROHIBIT,prohibit) 65 __ADD(RTN_THROW,throw) 66 __ADD(RTN_NAT,nat) 67 __ADD(RTN_XRESOLVE,xresolve) 68}; 69 70char *nl_rtntype2str(int type, char *buf, size_t size) 71{ 72 return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes)); 73} 74 75int nl_str2rtntype(const char *name) 76{ 77 return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes)); 78} 79 80/** @} */ 81 82/** 83 * @name Scope Translations 84 * @{ 85 */ 86 87static struct trans_tbl scopes[] = { 88 __ADD(255,nowhere) 89 __ADD(254,host) 90 __ADD(253,link) 91 __ADD(200,site) 92 __ADD(0,universe) 93}; 94 95char *rtnl_scope2str(int scope, char *buf, size_t size) 96{ 97 return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes)); 98} 99 100int rtnl_str2scope(const char *name) 101{ 102 return __str2type(name, scopes, ARRAY_SIZE(scopes)); 103} 104 105/** @} */ 106 107/** 108 * @name Realms Translations 109 * @{ 110 */ 111 112char * rtnl_realms2str(uint32_t realms, char *buf, size_t len) 113{ 114 int from = RTNL_REALM_FROM(realms); 115 int to = RTNL_REALM_TO(realms); 116 117 snprintf(buf, len, "%d/%d", from, to); 118 119 return buf; 120} 121 122/** @} */ 123 124/** @} */ 125