/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* INET An implementation of the TCP / IP protocol suite for the LINUX
* operating system . INET is implemented using the BSD Socket
* interface as the means of communication with the user level .
*
* Global definitions for the IP router interface .
*
* Version : @ ( # ) route . h 1 . 0 . 3 05 / 27 / 93
*
* Authors : Original taken from Berkeley UNIX 4 . 3 , ( c ) UCB 1986 - 1988
* for the purposes of compatibility only .
*
* Fred N . van Kempen , < waltje @ uWalt . NL . Mugnet . ORG >
*
* Changes :
* Mike McLagan : Routing by source
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version
* 2 of the License , or ( at your option ) any later version .
*/
#ifndef _LINUX_ROUTE_H
#define _LINUX_ROUTE_H
#include <linux/if .h>
#include <linux/compiler.h>
/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
struct rtentry {
unsigned long rt_pad1;
struct sockaddr rt_dst; /* target address */
struct sockaddr rt_gateway; /* gateway addr (RTF_GATEWAY) */
struct sockaddr rt_genmask; /* target network mask (IP) */
unsigned short rt_flags;
short rt_pad2;
unsigned long rt_pad3;
void *rt_pad4;
short rt_metric; /* +1 for binary compatibility! */
char __user *rt_dev; /* forcing the device at add */
unsigned long rt_mtu; /* per route MTU/Window */
#ifndef __KERNEL__
#define rt_mss rt_mtu /* Compatibility :-( */
#endif
unsigned long rt_window; /* Window clamping */
unsigned short rt_irtt; /* Initial RTT */
};
#define RTF_UP 0 x0001 /* route usable */
#define RTF_GATEWAY 0 x0002 /* destination is a gateway */
#define RTF_HOST 0 x0004 /* host entry (net otherwise) */
#define RTF_REINSTATE 0 x0008 /* reinstate route after tmout */
#define RTF_DYNAMIC 0 x0010 /* created dyn. (by redirect) */
#define RTF_MODIFIED 0 x0020 /* modified dyn. (by redirect) */
#define RTF_MTU 0 x0040 /* specific MTU for this route */
#define RTF_MSS RTF_MTU /* Compatibility :-( */
#define RTF_WINDOW 0 x0080 /* per route window clamping */
#define RTF_IRTT 0 x0100 /* Initial round trip time */
#define RTF_REJECT 0 x0200 /* Reject route */
/*
* < linux / ipv6_route . h > uses RTF values > = 64 k
*/
#endif /* _LINUX_ROUTE_H */
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