1 /* Copyright (C) 1997, 2002 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C 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; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 /* Based on the 4.4BSD and Linux version of this file. */ 20 21 #ifndef _NET_ROUTE_H 22 #define _NET_ROUTE_H 1 23 24 #include <features.h> 25 #include <sys/socket.h> 26 #include <sys/types.h> 27 #include <netinet/in.h> 28 #include <bits/wordsize.h> 29 30 31 /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */ 32 struct rtentry 33 { 34 unsigned long int rt_pad1; 35 struct sockaddr rt_dst; /* Target address. */ 36 struct sockaddr rt_gateway; /* Gateway addr (RTF_GATEWAY). */ 37 struct sockaddr rt_genmask; /* Target network mask (IP). */ 38 unsigned short int rt_flags; 39 short int rt_pad2; 40 unsigned long int rt_pad3; 41 unsigned char rt_tos; 42 unsigned char rt_class; 43 #if __WORDSIZE == 64 44 short int rt_pad4[3]; 45 #else 46 short int rt_pad4; 47 #endif 48 short int rt_metric; /* +1 for binary compatibility! */ 49 char *rt_dev; /* Forcing the device at add. */ 50 unsigned long int rt_mtu; /* Per route MTU/Window. */ 51 unsigned long int rt_window; /* Window clamping. */ 52 unsigned short int rt_irtt; /* Initial RTT. */ 53 }; 54 /* Compatibility hack. */ 55 #define rt_mss rt_mtu 56 57 58 struct in6_rtmsg 59 { 60 struct in6_addr rtmsg_dst; 61 struct in6_addr rtmsg_src; 62 struct in6_addr rtmsg_gateway; 63 u_int32_t rtmsg_type; 64 u_int16_t rtmsg_dst_len; 65 u_int16_t rtmsg_src_len; 66 u_int32_t rtmsg_metric; 67 unsigned long int rtmsg_info; 68 u_int32_t rtmsg_flags; 69 int rtmsg_ifindex; 70 }; 71 72 73 #define RTF_UP 0x0001 /* Route usable. */ 74 #define RTF_GATEWAY 0x0002 /* Destination is a gateway. */ 75 76 #define RTF_HOST 0x0004 /* Host entry (net otherwise). */ 77 #define RTF_REINSTATE 0x0008 /* Reinstate route after timeout. */ 78 #define RTF_DYNAMIC 0x0010 /* Created dyn. (by redirect). */ 79 #define RTF_MODIFIED 0x0020 /* Modified dyn. (by redirect). */ 80 #define RTF_MTU 0x0040 /* Specific MTU for this route. */ 81 #define RTF_MSS RTF_MTU /* Compatibility. */ 82 #define RTF_WINDOW 0x0080 /* Per route window clamping. */ 83 #define RTF_IRTT 0x0100 /* Initial round trip time. */ 84 #define RTF_REJECT 0x0200 /* Reject route. */ 85 #define RTF_STATIC 0x0400 /* Manually injected route. */ 86 #define RTF_XRESOLVE 0x0800 /* External resolver. */ 87 #define RTF_NOFORWARD 0x1000 /* Forwarding inhibited. */ 88 #define RTF_THROW 0x2000 /* Go to next class. */ 89 #define RTF_NOPMTUDISC 0x4000 /* Do not send packets with DF. */ 90 91 /* for IPv6 */ 92 #define RTF_DEFAULT 0x00010000 /* default - learned via ND */ 93 #define RTF_ALLONLINK 0x00020000 /* fallback, no routers on link */ 94 #define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */ 95 96 #define RTF_LINKRT 0x00100000 /* link specific - device match */ 97 #define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */ 98 99 #define RTF_CACHE 0x01000000 /* cache entry */ 100 #define RTF_FLOW 0x02000000 /* flow significant route */ 101 #define RTF_POLICY 0x04000000 /* policy route */ 102 103 #define RTCF_VALVE 0x00200000 104 #define RTCF_MASQ 0x00400000 105 #define RTCF_NAT 0x00800000 106 #define RTCF_DOREDIRECT 0x01000000 107 #define RTCF_LOG 0x02000000 108 #define RTCF_DIRECTSRC 0x04000000 109 110 #define RTF_LOCAL 0x80000000 111 #define RTF_INTERFACE 0x40000000 112 #define RTF_MULTICAST 0x20000000 113 #define RTF_BROADCAST 0x10000000 114 #define RTF_NAT 0x08000000 115 116 #define RTF_ADDRCLASSMASK 0xF8000000 117 #define RT_ADDRCLASS(flags) ((__u_int32_t) flags >> 23) 118 119 #define RT_TOS(tos) ((tos) & IPTOS_TOS_MASK) 120 121 #define RT_LOCALADDR(flags) ((flags & RTF_ADDRCLASSMASK) \ 122 == (RTF_LOCAL|RTF_INTERFACE)) 123 124 #define RT_CLASS_UNSPEC 0 125 #define RT_CLASS_DEFAULT 253 126 127 #define RT_CLASS_MAIN 254 128 #define RT_CLASS_LOCAL 255 129 #define RT_CLASS_MAX 255 130 131 132 #define RTMSG_ACK NLMSG_ACK 133 #define RTMSG_OVERRUN NLMSG_OVERRUN 134 135 #define RTMSG_NEWDEVICE 0x11 136 #define RTMSG_DELDEVICE 0x12 137 #define RTMSG_NEWROUTE 0x21 138 #define RTMSG_DELROUTE 0x22 139 #define RTMSG_NEWRULE 0x31 140 #define RTMSG_DELRULE 0x32 141 #define RTMSG_CONTROL 0x40 142 143 #define RTMSG_AR_FAILED 0x51 /* Address Resolution failed. */ 144 145 #endif /* net/route.h */ 146