1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 1995 John Hay. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)table.h 5.1 (Berkeley) 6/4/85 (routed/table.h) 36 * 37 * @(#)table.h 8.1 (Berkeley) 6/5/93 38 * 39 * $FreeBSD: stable/9/usr.sbin/IPXrouted/table.h 50479 1999-08-28 01:35:59Z peter $ 40 */ 41 42 /* 43 * Routing table management daemon. 44 */ 45 46 /* 47 * Routing table structure; differs a bit from kernel tables. 48 * 49 * Note: the union below must agree in the first 4 members 50 * so the ioctl's will work. 51 */ 52 struct rthash { 53 struct rt_entry *rt_forw; 54 struct rt_entry *rt_back; 55 }; 56 57 #ifdef RTM_ADD 58 #define rtentry ortentry 59 #endif 60 61 struct rt_entry { 62 struct rt_entry *rt_forw; 63 struct rt_entry *rt_back; 64 union { 65 struct rtentry rtu_rt; 66 struct rtuentry { 67 u_long rtu_hash; 68 struct sockaddr rtu_dst; 69 struct sockaddr rtu_router; 70 short rtu_rtflags; /* used by old rtioctl */ 71 short rtu_wasted; /* XXX routed does it this way. */ 72 int rtu_flags; 73 int rtu_state; 74 int rtu_timer; 75 int rtu_metric; 76 int rtu_ticks; 77 struct interface *rtu_ifp; 78 } rtu_entry; 79 } rt_rtu; 80 struct rt_entry *rt_clone; 81 }; 82 83 #define rt_rt rt_rtu.rtu_entry /* pass to ioctl */ 84 #define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */ 85 #define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */ 86 #define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */ 87 #define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */ 88 #define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */ 89 #define rt_state rt_rtu.rtu_entry.rtu_state /* see below */ 90 #define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */ 91 #define rt_ticks rt_rtu.rtu_entry.rtu_ticks /* time of route */ 92 #define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */ 93 94 #define ROUTEHASHSIZ 128 /* must be a power of 2 */ 95 #define ROUTEHASHMASK (ROUTEHASHSIZ - 1) 96 97 /* 98 * "State" of routing table entry. 99 */ 100 #define RTS_CHANGED 0x1 /* route has been altered recently */ 101 #define RTS_PASSIVE IFF_PASSIVE /* don't time out route */ 102 #define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */ 103 #define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */ 104 105 extern struct rthash nethash[ROUTEHASHSIZ]; 106 struct rt_entry *rtlookup(struct sockaddr *); 107 struct rt_entry *rtfind(struct sockaddr *); 108 void rtadd(struct sockaddr *, struct sockaddr *, short, short, int); 109 void rtadd_clone(struct rt_entry *, struct sockaddr *, struct sockaddr *, 110 short, short, int); 111 void rtchange(struct rt_entry *, struct sockaddr *, short, short); 112 void rtdelete(struct rt_entry *); 113 int rtioctl(int, struct rtuentry *); 114 void rtinit(void); 115 116