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 28/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */ 29struct rtentry 30{ 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 *rt_dev; /* forcing the device at add */ 41 unsigned long rt_mtu; /* per route MTU/Window */ 42#define rt_mss rt_mtu /* Compatibility :-( */ 43 unsigned long rt_window; /* Window clamping */ 44 unsigned short rt_irtt; /* Initial RTT */ 45}; 46 47 48#define RTF_UP 0x0001 /* route usable */ 49#define RTF_GATEWAY 0x0002 /* destination is a gateway */ 50#define RTF_HOST 0x0004 /* host entry (net otherwise) */ 51#define RTF_REINSTATE 0x0008 /* reinstate route after tmout */ 52#define RTF_DYNAMIC 0x0010 /* created dyn. (by redirect) */ 53#define RTF_MODIFIED 0x0020 /* modified dyn. (by redirect) */ 54#define RTF_MTU 0x0040 /* specific MTU for this route */ 55#define RTF_MSS RTF_MTU /* Compatibility :-( */ 56#define RTF_WINDOW 0x0080 /* per route window clamping */ 57#define RTF_IRTT 0x0100 /* Initial round trip time */ 58#define RTF_REJECT 0x0200 /* Reject route */ 59 60/* 61 * <linux/ipv6_route.h> uses RTF values >= 64k 62 */ 63 64 65 66#endif /* _LINUX_ROUTE_H */ 67 68