include/linux/route.h

   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. */
  30 struct rtentry
  31 {
  32         unsigned long   rt_pad1;
  33         struct sockaddr rt_dst;         /* target address               */
  34         struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
  35         struct sockaddr rt_genmask;     /* target network mask (IP)     */
  36         unsigned short  rt_flags;
  37         short           rt_pad2;
  38         unsigned long   rt_pad3;
  39         void            *rt_pad4;
  40         short           rt_metric;      /* +1 for binary compatibility! */
  41         char __user     *rt_dev;        /* forcing the device at add    */
  42         unsigned long   rt_mtu;         /* per route MTU/Window         */
  43 #ifndef __KERNEL__
  44 #define rt_mss  rt_mtu                  /* Compatibility :-(            */
  45 #endif
  46         unsigned long   rt_window;      /* Window clamping              */
  47         unsigned short  rt_irtt;        /* Initial RTT                  */
  48 };
  49
  50
  51 #define RTF_UP          0x0001          /* route usable                 */
  52 #define RTF_GATEWAY     0x0002          /* destination is a gateway     */
  53 #define RTF_HOST        0x0004          /* host entry (net otherwise)   */
  54 #define RTF_REINSTATE   0x0008          /* reinstate route after tmout  */
  55 #define RTF_DYNAMIC     0x0010          /* created dyn. (by redirect)   */
  56 #define RTF_MODIFIED    0x0020          /* modified dyn. (by redirect)  */
  57 #define RTF_MTU         0x0040          /* specific MTU for this route  */
  58 #define RTF_MSS         RTF_MTU         /* Compatibility :-(            */
  59 #define RTF_WINDOW      0x0080          /* per route window clamping    */
  60 #define RTF_IRTT        0x0100          /* Initial round trip time      */
  61 #define RTF_REJECT      0x0200          /* Reject route                 */
  62
  63 /*
  64  *      <linux/ipv6_route.h> uses RTF values >= 64k
  65  */
  66
  67
  68
  69 #endif  /* _LINUX_ROUTE_H */
  70