| 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
| 2 | /* |
| 3 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
| 4 | * operating system. INET is implemented using the BSD Socket |
| 5 | * interface as the means of communication with the user level. |
| 6 | * |
| 7 | * Global definitions for the IP router interface. |
| 8 | * |
| 9 | * Version: @(#)route.h 1.0.3 05/27/93 |
| 10 | * |
| 11 | * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 |
| 12 | * for the purposes of compatibility only. |
| 13 | * |
| 14 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 15 | * |
| 16 | * Changes: |
| 17 | * Mike McLagan : Routing by source |
| 18 | * |
| 19 | * This program is free software; you can redistribute it and/or |
| 20 | * modify it under the terms of the GNU General Public License |
| 21 | * as published by the Free Software Foundation; either version |
| 22 | * 2 of the License, or (at your option) any later version. |
| 23 | */ |
| 24 | #ifndef _LINUX_ROUTE_H |
| 25 | #define _LINUX_ROUTE_H |
| 26 | |
| 27 | #include <linux/if.h> |
| 28 | |
| 29 | |
| 30 | /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */ |
| 31 | struct rtentry { |
| 32 | unsigned long rt_pad1; |
| 33 | struct sockaddr rt_dst; /* target address */ |
| 34 | struct sockaddr rt_gateway; /* gateway addr (RTF_GATEWAY) */ |
| 35 | struct sockaddr rt_genmask; /* target network mask (IP) */ |
| 36 | unsigned short rt_flags; |
| 37 | short rt_pad2; |
| 38 | unsigned long rt_pad3; |
| 39 | void *rt_pad4; |
| 40 | short rt_metric; /* +1 for binary compatibility! */ |
| 41 | char *rt_dev; /* forcing the device at add */ |
| 42 | unsigned long rt_mtu; /* per route MTU/Window */ |
| 43 | #define rt_mss rt_mtu /* Compatibility :-( */ |
| 44 | unsigned long rt_window; /* Window clamping */ |
| 45 | unsigned short rt_irtt; /* Initial RTT */ |
| 46 | }; |
| 47 | |
| 48 | |
| 49 | #define RTF_UP 0x0001 /* route usable */ |
| 50 | #define RTF_GATEWAY 0x0002 /* destination is a gateway */ |
| 51 | #define RTF_HOST 0x0004 /* host entry (net otherwise) */ |
| 52 | #define RTF_REINSTATE 0x0008 /* reinstate route after tmout */ |
| 53 | #define RTF_DYNAMIC 0x0010 /* created dyn. (by redirect) */ |
| 54 | #define RTF_MODIFIED 0x0020 /* modified dyn. (by redirect) */ |
| 55 | #define RTF_MTU 0x0040 /* specific MTU for this route */ |
| 56 | #define RTF_MSS RTF_MTU /* Compatibility :-( */ |
| 57 | #define RTF_WINDOW 0x0080 /* per route window clamping */ |
| 58 | #define RTF_IRTT 0x0100 /* Initial round trip time */ |
| 59 | #define RTF_REJECT 0x0200 /* Reject route */ |
| 60 | |
| 61 | /* |
| 62 | * <linux/ipv6_route.h> uses RTF values >= 64k |
| 63 | */ |
| 64 | |
| 65 | |
| 66 | |
| 67 | #endif /* _LINUX_ROUTE_H */ |