141 lines
5.1 KiB
C
141 lines
5.1 KiB
C
/* $NetBSD: rsrr.h,v 1.2 1995/10/09 03:51:57 thorpej Exp $ */
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/*
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* Copyright (c) 1993 by the University of Southern California
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation in source and binary forms for non-commercial purposes
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* and without fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both the copyright notice and
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* this permission notice appear in supporting documentation. and that
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* any documentation, advertising materials, and other materials related
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* to such distribution and use acknowledge that the software was
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* developed by the University of Southern California, Information
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* Sciences Institute. The name of the University may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THE UNIVERSITY OF SOUTHERN CALIFORNIA makes no representations about
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* the suitability of this software for any purpose. THIS SOFTWARE IS
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* PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Other copyrights might apply to parts of this software and are so
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* noted when applicable.
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*/
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#define RSRR_SERV_PATH "/tmp/.rsrr_svr"
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/* Note this needs to be 14 chars for 4.3 BSD compatibility */
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#define RSRR_CLI_PATH "/tmp/.rsrr_cli"
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#define RSRR_MAX_LEN 2048
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#define RSRR_HEADER_LEN (sizeof(struct rsrr_header))
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#define RSRR_RQ_LEN (RSRR_HEADER_LEN + sizeof(struct rsrr_rq))
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#define RSRR_RR_LEN (RSRR_HEADER_LEN + sizeof(struct rsrr_rr))
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#define RSRR_VIF_LEN (sizeof(struct rsrr_vif))
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/* Current maximum number of vifs. */
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#define RSRR_MAX_VIFS 32
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/* Maximum acceptable version */
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#define RSRR_MAX_VERSION 1
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/* RSRR message types */
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#define RSRR_ALL_TYPES 0
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#define RSRR_INITIAL_QUERY 1
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#define RSRR_INITIAL_REPLY 2
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#define RSRR_ROUTE_QUERY 3
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#define RSRR_ROUTE_REPLY 4
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/* RSRR Initial Reply (Vif) Status bits
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* Each definition represents the position of the bit from right to left.
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*
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* Right-most bit is the disabled bit, set if the vif is administratively
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* disabled.
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*/
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#define RSRR_DISABLED_BIT 0
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/* All other bits are zeroes */
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/* RSRR Route Query/Reply flag bits
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* Each definition represents the position of the bit from right to left.
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*
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* Right-most bit is the Route Change Notification bit, set if the
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* reservation protocol wishes to receive notification of
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* a route change for the source-destination pair listed in the query.
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* Notification is in the form of an unsolicitied Route Reply.
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*/
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#define RSRR_NOTIFICATION_BIT 0
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/* Next bit indicates an error returning the Route Reply. */
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#define RSRR_ERROR_BIT 1
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/* All other bits are zeroes */
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/* Definition of an RSRR message header.
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* An Initial Query uses only the header, and an Initial Reply uses
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* the header and a list of vifs.
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*/
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struct rsrr_header {
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u_char version; /* RSRR Version, currently 1 */
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u_char type; /* type of message, as defined above */
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u_char flags; /* flags; defined by type */
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u_char num; /* number; defined by type */
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};
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/* Definition of a vif as seen by the reservation protocol.
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*
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* Routing gives the reservation protocol a list of vifs in the
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* Initial Reply.
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*
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* We explicitly list the ID because we can't assume that all routing
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* protocols will use the same numbering scheme.
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*
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* The status is a bitmask of status flags, as defined above. It is the
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* responsibility of the reservation protocol to perform any status checks
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* if it uses the MULTICAST_VIF socket option.
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*
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* The threshold indicates the ttl an outgoing packet needs in order to
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* be forwarded. The reservation protocol must perform this check itself if
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* it uses the MULTICAST_VIF socket option.
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*
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* The local address is the address of the physical interface over which
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* packets are sent.
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*/
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struct rsrr_vif {
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u_char id; /* vif id */
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u_char threshold; /* vif threshold ttl */
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u_short status; /* vif status bitmask */
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struct in_addr local_addr; /* vif local address */
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};
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/* Definition of an RSRR Route Query.
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*
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* The query asks routing for the forwarding entry for a particular
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* source and destination. The query ID uniquely identifies the query
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* for the reservation protocol. Thus, the combination of the client's
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* address and the query ID forms a unique identifier for routing.
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* Flags are defined above.
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*/
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struct rsrr_rq {
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struct in_addr dest_addr; /* destination */
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struct in_addr source_addr; /* source */
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u_long query_id; /* query ID */
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};
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/* Definition of an RSRR Route Reply.
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*
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* Routing uses the reply to give the reservation protocol the
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* forwarding entry for a source-destination pair. Routing copies the
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* query ID from the query and fills in the incoming vif and a bitmask
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* of the outgoing vifs.
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* Flags are defined above.
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*/
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struct rsrr_rr {
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struct in_addr dest_addr; /* destination */
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struct in_addr source_addr; /* source */
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u_long query_id; /* query ID */
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u_short in_vif; /* incoming vif */
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u_short reserved; /* reserved */
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u_long out_vif_bm; /* outgoing vif bitmask */
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};
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