diff options
Diffstat (limited to 'usr.sbin/routed/table.h')
| -rw-r--r-- | usr.sbin/routed/table.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/usr.sbin/routed/table.h b/usr.sbin/routed/table.h new file mode 100644 index 0000000..01336f0 --- /dev/null +++ b/usr.sbin/routed/table.h @@ -0,0 +1,108 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)table.h 8.1 (Berkeley) 6/5/93 + */ + +/* + * Routing table management daemon. + */ + +/* + * Routing table structure; differs a bit from kernel tables. + * + * Note: the union below must agree in the first 4 members + * so the ioctl's will work. + */ +struct rthash { + struct rt_entry *rt_forw; + struct rt_entry *rt_back; +}; +#ifdef RTM_ADD +#define rtentry ortentry +#endif + +struct rt_entry { + struct rt_entry *rt_forw; + struct rt_entry *rt_back; + union { + struct rtentry rtu_rt; + struct rtuentry { + u_long rtu_hash; + struct sockaddr rtu_dst; + struct sockaddr rtu_router; + short rtu_rtflags; /* used by rtioctl */ + short rtu_wasted[5]; + int rtu_flags; + int rtu_state; + int rtu_timer; + int rtu_metric; + int rtu_ifmetric; + struct interface *rtu_ifp; + } rtu_entry; + } rt_rtu; +}; + +#define rt_rt rt_rtu.rtu_entry /* pass to ioctl */ +#define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */ +#define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */ +#define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */ +#define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */ +#define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */ +#define rt_state rt_rtu.rtu_entry.rtu_state /* see below */ +#define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */ +#define rt_ifmetric rt_rtu.rtu_entry.rtu_ifmetric /* cost of route if */ +#define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */ + +#define ROUTEHASHSIZ 32 /* must be a power of 2 */ +#define ROUTEHASHMASK (ROUTEHASHSIZ - 1) + +/* + * "State" of routing table entry. + */ +#define RTS_CHANGED 0x1 /* route has been altered recently */ +#define RTS_EXTERNAL 0x2 /* extern info, not installed or sent */ +#define RTS_INTERNAL 0x4 /* internal route, not installed */ +#define RTS_PASSIVE IFF_PASSIVE /* don't time out route */ +#define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */ +#define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */ +#define RTS_SUBNET IFF_SUBNET /* route is for network subnet */ + +/* + * Flags are same as kernel, with this addition for af_rtflags: + */ +#define RTF_SUBNET 0x80000 /* pseudo: route to subnet */ + +struct rthash nethash[ROUTEHASHSIZ]; +struct rthash hosthash[ROUTEHASHSIZ]; +struct rt_entry *rtlookup(); +struct rt_entry *rtfind(); |
