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- #ifndef NET_ROUTE_H
- #define NET_ROUTE_H \
- "$Id: route.h,v 1.1.1.1 2001/11/26 22:21:14 tboeckel Exp $"
- /*
- * Generic Routing Routines
- *
- * Copyright © 1994 AmiTCP/IP Group,
- * Network Solutions Development, Inc.
- * All rights reserved.
- */
-
- /*
- * These numbers are used by reliable protocols for determining
- * retransmission behavior and are included in the routing structure.
- */
- struct rt_metrics {
- u_long rmx_locks; /* Kernel must leave these values alone */
- u_long rmx_mtu; /* MTU for this path */
- u_long rmx_hopcount; /* max hops expected */
- u_long rmx_expire; /* lifetime for route, e.g. redirect */
- u_long rmx_recvpipe; /* inbound delay-bandwith product */
- u_long rmx_sendpipe; /* outbound delay-bandwith product */
- u_long rmx_ssthresh; /* outbound gateway buffer limit */
- u_long rmx_rtt; /* estimated round trip time */
- u_long rmx_rttvar; /* estimated rtt variance */
- };
-
- /*
- * rmx_rtt and rmx_rttvar are stored as microseconds;
- * RTTTOPRHZ(rtt) converts to a value suitable for use
- * by a protocol slowtimo counter.
- */
- #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */
- #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ))
-
- #define RTF_UP 0x1 /* route useable */
- #define RTF_GATEWAY 0x2 /* destination is a gateway */
- #define RTF_HOST 0x4 /* host entry (net otherwise) */
- #define RTF_REJECT 0x8 /* host or net unreachable */
- #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */
- #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */
- #define RTF_DONE 0x40 /* message confirmed */
- #define RTF_MASK 0x80 /* subnet mask present */
- #define RTF_CLONING 0x100 /* generate new routes on use */
- #define RTF_XRESOLVE 0x200 /* external daemon resolves name */
- #define RTF_LLINFO 0x400 /* generated by ARP or ESIS */
- #define RTF_PROTO2 0x4000 /* protocol specific routing flag */
- #define RTF_PROTO1 0x8000 /* protocol specific routing flag */
-
- /*
- * Routing statistics.
- */
- struct rtstat {
- short rts_badredirect; /* bogus redirect calls */
- short rts_dynamic; /* routes created by redirects */
- short rts_newgateway; /* routes modified by redirects */
- short rts_unreach; /* lookups which failed */
- short rts_wildcard; /* lookups satisfied by a wildcard */
- };
-
- /*
- * Following structure necessary for 4.3 compatibility;
- * We should eventually move it to a compat file.
- */
- struct ortentry {
- u_long rt_hash; /* to speed lookups */
- struct sockaddr rt_dst; /* key */
- struct sockaddr rt_gateway; /* value */
- short rt_flags; /* up/down?, host/net */
- short rt_refcnt; /* # held references */
- u_long rt_use; /* raw # packets forwarded */
- #ifdef AMITCP
- char rt_pad[4];
- #else
- struct ifnet *rt_ifp; /* the answer: interface to use */
- #endif
- };
-
- /*
- * Structures for routing messages.
- */
- struct rt_msghdr {
- u_short rtm_msglen; /* to skip over non-understood messages */
- u_char rtm_version; /* future binary compatability */
- u_char rtm_type; /* message type */
- u_short rtm_index; /* index for associated ifp */
- pid_t rtm_pid; /* identify sender */
- int rtm_addrs; /* bitmask identifying sockaddrs in msg */
- int rtm_seq; /* for sender to identify action */
- int rtm_errno; /* why failed */
- int rtm_flags; /* flags, incl. kern & message, e.g. DONE */
- int rtm_use; /* from rtentry */
- u_long rtm_inits; /* which metrics we are initializing */
- struct rt_metrics rtm_rmx; /* metrics themselves */
- };
-
- struct route_cb {
- int ip_count;
- int ns_count;
- int iso_count;
- int any_count;
- };
-
- #define RTM_VERSION 2 /* Up the ante and ignore older versions */
-
- #define RTM_ADD 0x1 /* Add Route */
- #define RTM_DELETE 0x2 /* Delete Route */
- #define RTM_CHANGE 0x3 /* Change Metrics or flags */
- #define RTM_GET 0x4 /* Report Metrics */
- #define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */
- #define RTM_REDIRECT 0x6 /* Told to use different route */
- #define RTM_MISS 0x7 /* Lookup failed on this address */
- #define RTM_LOCK 0x8 /* fix specified metrics */
- #define RTM_OLDADD 0x9 /* caused by SIOCADDRT */
- #define RTM_OLDDEL 0xa /* caused by SIOCDELRT */
- #define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */
-
- #define RTV_MTU 0x1 /* init or lock _mtu */
- #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */
- #define RTV_EXPIRE 0x4 /* init or lock _hopcount */
- #define RTV_RPIPE 0x8 /* init or lock _recvpipe */
- #define RTV_SPIPE 0x10 /* init or lock _sendpipe */
- #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */
- #define RTV_RTT 0x40 /* init or lock _rtt */
- #define RTV_RTTVAR 0x80 /* init or lock _rttvar */
-
- #define RTA_DST 0x1 /* destination sockaddr present */
- #define RTA_GATEWAY 0x2 /* gateway sockaddr present */
- #define RTA_NETMASK 0x4 /* netmask sockaddr present */
- #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */
- #define RTA_IFP 0x10 /* interface name sockaddr present */
- #define RTA_IFA 0x20 /* interface addr sockaddr present */
- #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */
-
- #endif /* !NET_ROUTE_H */
-