projects / unix-history / blame
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1 | /* |
| 2 | * Copyright (c) 1983 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| af359dea C |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 02748149 KB |
32 | * |
| 33 | * @(#)table.h 5.1 (Berkeley) 6/4/85 (routed/table.h) | |
| 34 | * | |
| 1c15e888 | 35 | * @(#)table.h 5.3 (Berkeley) 6/1/90 |
| 02748149 KB |
36 | */ |
| 37 | ||
| 38 | /* | |
| 39 | * Routing table management daemon. | |
| 40 | */ | |
| 41 | ||
| 42 | /* | |
| 43 | * Routing table structure; differs a bit from kernel tables. | |
| 44 | * | |
| 45 | * Note: the union below must agree in the first 4 members | |
| 46 | * so the ioctl's will work. | |
| 47 | */ | |
| 48 | struct rthash { | |
| 49 | struct rt_entry *rt_forw; | |
| 50 | struct rt_entry *rt_back; | |
| 51 | }; | |
| 52 | ||
| 3470e246 MK |
53 | #ifdef RTM_ADD |
| 54 | #define rtentry ortentry | |
| 55 | #endif | |
| 56 | ||
| 02748149 KB |
57 | struct rt_entry { |
| 58 | struct rt_entry *rt_forw; | |
| 59 | struct rt_entry *rt_back; | |
| 60 | union { | |
| 61 | struct rtentry rtu_rt; | |
| 62 | struct { | |
| 63 | u_long rtu_hash; | |
| 64 | struct sockaddr rtu_dst; | |
| 65 | struct sockaddr rtu_router; | |
| 66 | short rtu_flags; | |
| 67 | short rtu_state; | |
| 68 | int rtu_timer; | |
| 69 | int rtu_metric; | |
| 70 | struct interface *rtu_ifp; | |
| 71 | } rtu_entry; | |
| 72 | } rt_rtu; | |
| 73 | }; | |
| 74 | ||
| 75 | #define rt_rt rt_rtu.rtu_rt /* pass to ioctl */ | |
| 76 | #define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */ | |
| 77 | #define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */ | |
| 78 | #define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */ | |
| 79 | #define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */ | |
| 80 | #define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */ | |
| 81 | #define rt_state rt_rtu.rtu_entry.rtu_state /* see below */ | |
| 82 | #define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */ | |
| 83 | #define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */ | |
| 84 | ||
| 85 | #define ROUTEHASHSIZ 32 /* must be a power of 2 */ | |
| 86 | #define ROUTEHASHMASK (ROUTEHASHSIZ - 1) | |
| 87 | ||
| 88 | /* | |
| 89 | * "State" of routing table entry. | |
| 90 | */ | |
| 91 | #define RTS_CHANGED 0x1 /* route has been altered recently */ | |
| 92 | #define RTS_PASSIVE IFF_PASSIVE /* don't time out route */ | |
| 93 | #define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */ | |
| 94 | #define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */ | |
| 95 | ||
| 96 | struct rthash nethash[ROUTEHASHSIZ]; | |
| 97 | struct rthash hosthash[ROUTEHASHSIZ]; | |
| 98 | struct rt_entry *rtlookup(); | |
| 99 | struct rt_entry *rtfind(); |