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 (at) 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. */ 29 struct 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
