libnl
3.2.3
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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) 2003-2008 Thomas Graf <tgraf@suug.ch> 00010 */ 00011 00012 /** 00013 * @defgroup rtnl Routing Family 00014 * @{ 00015 */ 00016 00017 #include <netlink-local.h> 00018 #include <netlink/netlink.h> 00019 #include <netlink/utils.h> 00020 #include <netlink/route/rtnl.h> 00021 00022 /** 00023 * @name Sending 00024 * @{ 00025 */ 00026 00027 /** 00028 * Send routing netlink request message 00029 * @arg sk Netlink socket. 00030 * @arg type Netlink message type. 00031 * @arg family Address family. 00032 * @arg flags Additional netlink message flags. 00033 * 00034 * Fills out a routing netlink request message and sends it out 00035 * using nl_send_simple(). 00036 * 00037 * @return 0 on success or a negative error code. 00038 */ 00039 int nl_rtgen_request(struct nl_sock *sk, int type, int family, int flags) 00040 { 00041 struct rtgenmsg gmsg = { 00042 .rtgen_family = family, 00043 }; 00044 00045 return nl_send_simple(sk, type, flags, &gmsg, sizeof(gmsg)); 00046 } 00047 00048 /** @} */ 00049 00050 /** 00051 * @name Routing Type Translations 00052 * @{ 00053 */ 00054 00055 static const struct trans_tbl rtntypes[] = { 00056 __ADD(RTN_UNSPEC,unspec) 00057 __ADD(RTN_UNICAST,unicast) 00058 __ADD(RTN_LOCAL,local) 00059 __ADD(RTN_BROADCAST,broadcast) 00060 __ADD(RTN_ANYCAST,anycast) 00061 __ADD(RTN_MULTICAST,multicast) 00062 __ADD(RTN_BLACKHOLE,blackhole) 00063 __ADD(RTN_UNREACHABLE,unreachable) 00064 __ADD(RTN_PROHIBIT,prohibit) 00065 __ADD(RTN_THROW,throw) 00066 __ADD(RTN_NAT,nat) 00067 __ADD(RTN_XRESOLVE,xresolve) 00068 }; 00069 00070 char *nl_rtntype2str(int type, char *buf, size_t size) 00071 { 00072 return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes)); 00073 } 00074 00075 int nl_str2rtntype(const char *name) 00076 { 00077 return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes)); 00078 } 00079 00080 /** @} */ 00081 00082 /** 00083 * @name Scope Translations 00084 * @{ 00085 */ 00086 00087 static const struct trans_tbl scopes[] = { 00088 __ADD(255,nowhere) 00089 __ADD(254,host) 00090 __ADD(253,link) 00091 __ADD(200,site) 00092 __ADD(0,global) 00093 }; 00094 00095 char *rtnl_scope2str(int scope, char *buf, size_t size) 00096 { 00097 return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes)); 00098 } 00099 00100 int rtnl_str2scope(const char *name) 00101 { 00102 return __str2type(name, scopes, ARRAY_SIZE(scopes)); 00103 } 00104 00105 /** @} */ 00106 00107 /** 00108 * @name Realms Translations 00109 * @{ 00110 */ 00111 00112 char * rtnl_realms2str(uint32_t realms, char *buf, size_t len) 00113 { 00114 int from = RTNL_REALM_FROM(realms); 00115 int to = RTNL_REALM_TO(realms); 00116 00117 snprintf(buf, len, "%d/%d", from, to); 00118 00119 return buf; 00120 } 00121 00122 /** @} */ 00123 00124 /** @} */