linux/include/linux/route.h
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   1/*
   2 * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3 *              operating system.  INET is implemented using the  BSD Socket
   4 *              interface as the means of communication with the user level.
   5 *
   6 *              Global definitions for the IP router interface.
   7 *
   8 * Version:     @(#)route.h     1.0.3   05/27/93
   9 *
  10 * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
  11 *              for the purposes of compatibility only.
  12 *
  13 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  14 *
  15 * Changes:
  16 *              Mike McLagan    :       Routing by source
  17 *
  18 *              This program is free software; you can redistribute it and/or
  19 *              modify it under the terms of the GNU General Public License
  20 *              as published by the Free Software Foundation; either version
  21 *              2 of the License, or (at your option) any later version.
  22 */
  23#ifndef _LINUX_ROUTE_H
  24#define _LINUX_ROUTE_H
  25
  26#include <linux/if.h>
  27#include <linux/compiler.h>
  28
  29/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
  30struct rtentry {
  31        unsigned long   rt_pad1;
  32        struct sockaddr rt_dst;         /* target address               */
  33        struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
  34        struct sockaddr rt_genmask;     /* target network mask (IP)     */
  35        unsigned short  rt_flags;
  36        short           rt_pad2;
  37        unsigned long   rt_pad3;
  38        void            *rt_pad4;
  39        short           rt_metric;      /* +1 for binary compatibility! */
  40        char __user     *rt_dev;        /* forcing the device at add    */
  41        unsigned long   rt_mtu;         /* per route MTU/Window         */
  42#ifndef __KERNEL__
  43#define rt_mss  rt_mtu                  /* Compatibility :-(            */
  44#endif
  45        unsigned long   rt_window;      /* Window clamping              */
  46        unsigned short  rt_irtt;        /* Initial RTT                  */
  47};
  48
  49
  50#define RTF_UP          0x0001          /* route usable                 */
  51#define RTF_GATEWAY     0x0002          /* destination is a gateway     */
  52#define RTF_HOST        0x0004          /* host entry (net otherwise)   */
  53#define RTF_REINSTATE   0x0008          /* reinstate route after tmout  */
  54#define RTF_DYNAMIC     0x0010          /* created dyn. (by redirect)   */
  55#define RTF_MODIFIED    0x0020          /* modified dyn. (by redirect)  */
  56#define RTF_MTU         0x0040          /* specific MTU for this route  */
  57#define RTF_MSS         RTF_MTU         /* Compatibility :-(            */
  58#define RTF_WINDOW      0x0080          /* per route window clamping    */
  59#define RTF_IRTT        0x0100          /* Initial round trip time      */
  60#define RTF_REJECT      0x0200          /* Reject route                 */
  61
  62/*
  63 *      <linux/ipv6_route.h> uses RTF values >= 64k
  64 */
  65
  66
  67
  68#endif  /* _LINUX_ROUTE_H */
  69
  70
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