| 1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | * |
| 17 | * @(#)table.h 5.6 (Berkeley) %G% |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Routing table management daemon. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * Routing table structure; differs a bit from kernel tables. |
| 26 | * |
| 27 | * Note: the union below must agree in the first 4 members |
| 28 | * so the ioctl's will work. |
| 29 | */ |
| 30 | struct rthash { |
| 31 | struct rt_entry *rt_forw; |
| 32 | struct rt_entry *rt_back; |
| 33 | }; |
| 34 | |
| 35 | struct rt_entry { |
| 36 | struct rt_entry *rt_forw; |
| 37 | struct rt_entry *rt_back; |
| 38 | union { |
| 39 | struct rtentry rtu_rt; |
| 40 | struct { |
| 41 | u_long rtu_hash; |
| 42 | struct sockaddr rtu_dst; |
| 43 | struct sockaddr rtu_router; |
| 44 | short rtu_flags; |
| 45 | short rtu_state; |
| 46 | int rtu_timer; |
| 47 | int rtu_metric; |
| 48 | int rtu_ifmetric; |
| 49 | struct interface *rtu_ifp; |
| 50 | } rtu_entry; |
| 51 | } rt_rtu; |
| 52 | }; |
| 53 | |
| 54 | #define rt_rt rt_rtu.rtu_rt /* pass to ioctl */ |
| 55 | #define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */ |
| 56 | #define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */ |
| 57 | #define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */ |
| 58 | #define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */ |
| 59 | #define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */ |
| 60 | #define rt_state rt_rtu.rtu_entry.rtu_state /* see below */ |
| 61 | #define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */ |
| 62 | #define rt_ifmetric rt_rtu.rtu_entry.rtu_ifmetric /* cost of route if */ |
| 63 | #define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */ |
| 64 | |
| 65 | #define ROUTEHASHSIZ 32 /* must be a power of 2 */ |
| 66 | #define ROUTEHASHMASK (ROUTEHASHSIZ - 1) |
| 67 | |
| 68 | /* |
| 69 | * "State" of routing table entry. |
| 70 | */ |
| 71 | #define RTS_CHANGED 0x1 /* route has been altered recently */ |
| 72 | #define RTS_EXTERNAL 0x2 /* extern info, not installed or sent */ |
| 73 | #define RTS_INTERNAL 0x4 /* internal route, not installed */ |
| 74 | #define RTS_PASSIVE IFF_PASSIVE /* don't time out route */ |
| 75 | #define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */ |
| 76 | #define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */ |
| 77 | #define RTS_SUBNET IFF_SUBNET /* route is for network subnet */ |
| 78 | |
| 79 | /* |
| 80 | * Flags are same as kernel, with this addition for af_rtflags: |
| 81 | */ |
| 82 | #define RTF_SUBNET 0x8000 /* pseudo: route to subnet */ |
| 83 | |
| 84 | struct rthash nethash[ROUTEHASHSIZ]; |
| 85 | struct rthash hosthash[ROUTEHASHSIZ]; |
| 86 | struct rt_entry *rtlookup(); |
| 87 | struct rt_entry *rtfind(); |