include/net/route.h

   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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /* Based on the 4.4BSD and Linux version of this file.  */
  19
  20 #ifndef _NET_ROUTE_H
  21 #define _NET_ROUTE_H    1
  22
  23 #include <features.h>
  24 #include <sys/socket.h>
  25 #include <sys/types.h>
  26 #include <netinet/in.h>
  27 #include <bits/wordsize.h>
  28
  29
  30 /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
  31 struct rtentry
  32   {
  33     unsigned long int rt_pad1;
  34     struct sockaddr rt_dst;             /* Target address.  */
  35     struct sockaddr rt_gateway;         /* Gateway addr (RTF_GATEWAY).  */
  36     struct sockaddr rt_genmask;         /* Target network mask (IP).  */
  37     unsigned short int rt_flags;
  38     short int rt_pad2;
  39     unsigned long int rt_pad3;
  40     unsigned char rt_tos;
  41     unsigned char rt_class;
  42 #if __WORDSIZE == 64
  43     short int rt_pad4[3];
  44 #else
  45     short int rt_pad4;
  46 #endif
  47     short int rt_metric;                /* +1 for binary compatibility!  */
  48     char *rt_dev;                       /* Forcing the device at add.  */
  49     unsigned long int rt_mtu;           /* Per route MTU/Window.  */
  50     unsigned long int rt_window;        /* Window clamping.  */
  51     unsigned short int rt_irtt;         /* Initial RTT.  */
  52   };
  53 /* Compatibility hack.  */
  54 #define rt_mss  rt_mtu
  55
  56
  57 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
  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 #endif
  72
  73
  74 #define RTF_UP          0x0001          /* Route usable.  */
  75 #define RTF_GATEWAY     0x0002          /* Destination is a gateway.  */
  76
  77 #define RTF_HOST        0x0004          /* Host entry (net otherwise).  */
  78 #define RTF_REINSTATE   0x0008          /* Reinstate route after timeout.  */
  79 #define RTF_DYNAMIC     0x0010          /* Created dyn. (by redirect).  */
  80 #define RTF_MODIFIED    0x0020          /* Modified dyn. (by redirect).  */
  81 #define RTF_MTU         0x0040          /* Specific MTU for this route.  */
  82 #define RTF_MSS         RTF_MTU         /* Compatibility.  */
  83 #define RTF_WINDOW      0x0080          /* Per route window clamping.  */
  84 #define RTF_IRTT        0x0100          /* Initial round trip time.  */
  85 #define RTF_REJECT      0x0200          /* Reject route.  */
  86 #define RTF_STATIC      0x0400          /* Manually injected route.  */
  87 #define RTF_XRESOLVE    0x0800          /* External resolver.  */
  88 #define RTF_NOFORWARD   0x1000          /* Forwarding inhibited.  */
  89 #define RTF_THROW       0x2000          /* Go to next class.  */
  90 #define RTF_NOPMTUDISC  0x4000          /* Do not send packets with DF.  */
  91
  92 /* for IPv6 */
  93 #define RTF_DEFAULT     0x00010000      /* default - learned via ND     */
  94 #define RTF_ALLONLINK   0x00020000      /* fallback, no routers on link */
  95 #define RTF_ADDRCONF    0x00040000      /* addrconf route - RA          */
  96
  97 #define RTF_LINKRT      0x00100000      /* link specific - device match */
  98 #define RTF_NONEXTHOP   0x00200000      /* route with no nexthop        */
  99
 100 #define RTF_CACHE       0x01000000      /* cache entry                  */
 101 #define RTF_FLOW        0x02000000      /* flow significant route       */
 102 #define RTF_POLICY      0x04000000      /* policy route                 */
 103
 104 #define RTCF_VALVE      0x00200000
 105 #define RTCF_MASQ       0x00400000
 106 #define RTCF_NAT        0x00800000
 107 #define RTCF_DOREDIRECT 0x01000000
 108 #define RTCF_LOG        0x02000000
 109 #define RTCF_DIRECTSRC  0x04000000
 110
 111 #define RTF_LOCAL       0x80000000
 112 #define RTF_INTERFACE   0x40000000
 113 #define RTF_MULTICAST   0x20000000
 114 #define RTF_BROADCAST   0x10000000
 115 #define RTF_NAT         0x08000000
 116
 117 #define RTF_ADDRCLASSMASK       0xF8000000
 118 #define RT_ADDRCLASS(flags)     ((__u_int32_t) flags >> 23)
 119
 120 #define RT_TOS(tos)             ((tos) & IPTOS_TOS_MASK)
 121
 122 #define RT_LOCALADDR(flags)     ((flags & RTF_ADDRCLASSMASK) \
 123                                  == (RTF_LOCAL|RTF_INTERFACE))
 124
 125 #define RT_CLASS_UNSPEC         0
 126 #define RT_CLASS_DEFAULT        253
 127
 128 #define RT_CLASS_MAIN           254
 129 #define RT_CLASS_LOCAL          255
 130 #define RT_CLASS_MAX            255
 131
 132
 133 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
 134 #define RTMSG_ACK               NLMSG_ACK
 135 #define RTMSG_OVERRUN           NLMSG_OVERRUN
 136
 137 #define RTMSG_NEWDEVICE         0x11
 138 #define RTMSG_DELDEVICE         0x12
 139 #define RTMSG_NEWROUTE          0x21
 140 #define RTMSG_DELROUTE          0x22
 141 #define RTMSG_NEWRULE           0x31
 142 #define RTMSG_DELRULE           0x32
 143 #define RTMSG_CONTROL           0x40
 144
 145 #define RTMSG_AR_FAILED         0x51    /* Address Resolution failed.  */
 146 #endif
 147
 148 #endif /* net/route.h */