libnl 1.1
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00001 /* 00002 * lib/route/rtnl.c Routing Netlink 00003 * 00004 * This library is free software; you can redistribute it and/or 00005 * modify it under the terms of the GNU Lesser General Public 00006 * License as published by the Free Software Foundation version 2.1 00007 * of the License. 00008 * 00009 * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch> 00010 */ 00011 00012 /** 00013 * @ingroup nlfam 00014 * @defgroup rtnl Routing Netlink 00015 * @{ 00016 */ 00017 00018 #include <netlink-local.h> 00019 #include <netlink/netlink.h> 00020 #include <netlink/utils.h> 00021 #include <netlink/route/rtnl.h> 00022 00023 /** 00024 * @name Sending 00025 * @{ 00026 */ 00027 00028 /** 00029 * Send routing netlink request message 00030 * @arg handle Netlink handle. 00031 * @arg type Netlink message type. 00032 * @arg family Address family. 00033 * @arg flags Additional netlink message flags. 00034 * 00035 * Fills out a routing netlink request message and sends it out 00036 * using nl_send_simple(). 00037 * 00038 * @return 0 on success or a negative error code. 00039 */ 00040 int nl_rtgen_request(struct nl_handle *handle, int type, int family, int flags) 00041 { 00042 struct rtgenmsg gmsg = { 00043 .rtgen_family = family, 00044 }; 00045 00046 return nl_send_simple(handle, type, flags, &gmsg, sizeof(gmsg)); 00047 } 00048 00049 /** @} */ 00050 00051 /** 00052 * @name Routing Type Translations 00053 * @{ 00054 */ 00055 00056 static struct trans_tbl rtntypes[] = { 00057 __ADD(RTN_UNSPEC,unspec) 00058 __ADD(RTN_UNICAST,unicast) 00059 __ADD(RTN_LOCAL,local) 00060 __ADD(RTN_BROADCAST,broadcast) 00061 __ADD(RTN_ANYCAST,anycast) 00062 __ADD(RTN_MULTICAST,multicast) 00063 __ADD(RTN_BLACKHOLE,blackhole) 00064 __ADD(RTN_UNREACHABLE,unreachable) 00065 __ADD(RTN_PROHIBIT,prohibit) 00066 __ADD(RTN_THROW,throw) 00067 __ADD(RTN_NAT,nat) 00068 __ADD(RTN_XRESOLVE,xresolve) 00069 }; 00070 00071 char *nl_rtntype2str(int type, char *buf, size_t size) 00072 { 00073 return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes)); 00074 } 00075 00076 int nl_str2rtntype(const char *name) 00077 { 00078 return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes)); 00079 } 00080 00081 /** @} */ 00082 00083 /** 00084 * @name Scope Translations 00085 * @{ 00086 */ 00087 00088 static struct trans_tbl scopes[] = { 00089 __ADD(255,nowhere) 00090 __ADD(254,host) 00091 __ADD(253,link) 00092 __ADD(200,site) 00093 __ADD(0,universe) 00094 }; 00095 00096 char *rtnl_scope2str(int scope, char *buf, size_t size) 00097 { 00098 return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes)); 00099 } 00100 00101 int rtnl_str2scope(const char *name) 00102 { 00103 return __str2type(name, scopes, ARRAY_SIZE(scopes)); 00104 } 00105 00106 /** @} */ 00107 00108 /** 00109 * @name Realms Translations 00110 * @{ 00111 */ 00112 00113 char * rtnl_realms2str(uint32_t realms, char *buf, size_t len) 00114 { 00115 int from = RTNL_REALM_FROM(realms); 00116 int to = RTNL_REALM_TO(realms); 00117 00118 snprintf(buf, len, "%d/%d", from, to); 00119 00120 return buf; 00121 } 00122 00123 /** @} */ 00124 00125 /** @} */