/* 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> /* 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 *rt_dev; /* forcing the device at add */ unsigned long rt_mtu; /* per route MTU/Window */ #define rt_mss rt_mtu /* Compatibility :-( */ 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 */