Quellcode-Bibliothek route.h Sprache: C

/* 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  0x0001  /* route usable    */
#define RTF_GATEWAY 0x0002  /* destination is a gateway */
#define RTF_HOST 0x0004  /* host entry (net otherwise) */
#define RTF_REINSTATE 0x0008  /* reinstate route after tmout */
#define RTF_DYNAMIC 0x0010  /* created dyn. (by redirect) */
#define RTF_MODIFIED 0x0020  /* modified dyn. (by redirect) */
#define RTF_MTU  0x0040  /* specific MTU for this route */
#define RTF_MSS  RTF_MTU  /* Compatibility :-( */
#define RTF_WINDOW 0x0080  /* per route window clamping */
#define RTF_IRTT 0x0100  /* Initial round trip time */
#define RTF_REJECT 0x0200  /* Reject route */

/*
* <linux/ipv6_route.h> uses RTF values >= 64k
*/

#endif /* _LINUX_ROUTE_H */

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