/* * Copyright (c) 1993, 1998 by the University of Southern California * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation in source and binary forms for lawful purposes * and without fee is hereby granted, provided that the above copyright * notice appear in all copies and that both the copyright notice and * this permission notice appear in supporting documentation. and that * any documentation, advertising materials, and other materials related * to such distribution and use acknowledge that the software was * developed by the University of Southern California, Information * Sciences Institute. The name of the University may not be used to * endorse or promote products derived from this software without * specific prior written permission. * * THE UNIVERSITY OF SOUTHERN CALIFORNIA makes no representations about * the suitability of this software for any purpose. THIS SOFTWARE IS * PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * Other copyrights might apply to parts of this software and are so * noted when applicable. */ #define RSRR_SERV_PATH "/tmp/.rsrr_svr" /* Note this needs to be 14 chars for 4.3 BSD compatibility */ #define RSRR_CLI_PATH "/tmp/.rsrr_cli" #define RSRR_MAX_LEN 2048 #define RSRR_HEADER_LEN (sizeof(struct rsrr_header)) #define RSRR_RQ_LEN (RSRR_HEADER_LEN + sizeof(struct rsrr_rq)) #define RSRR_RR_LEN (RSRR_HEADER_LEN + sizeof(struct rsrr_rr)) #define RSRR_VIF_LEN (sizeof(struct rsrr_vif)) /* Current maximum number of vifs. */ #define RSRR_MAX_VIFS 32 /* Maximum acceptable version */ #define RSRR_MAX_VERSION 1 /* RSRR message types */ #define RSRR_ALL_TYPES 0 #define RSRR_INITIAL_QUERY 1 #define RSRR_INITIAL_REPLY 2 #define RSRR_ROUTE_QUERY 3 #define RSRR_ROUTE_REPLY 4 /* Each definition represents the position of the bit from right to left. */ /* All not defined bits are zeroes */ /* RSRR Initial Reply (Vif) Status bits * * 0 = disabled bit, set if the vif is administratively disabled. */ #define RSRR_DISABLED_BIT 0 /* RSRR Route Query/Reply flag bits * * 0 = Route Change Notification bit, set if the reservation protocol * wishes to receive notification of a route change for the * source-destination pair listed in the query. Notification is in the * form of an unsolicitied Route Reply. * 1 = Error bit, set if routing doesn't have a routing entry for * the source-destination pair. * (TODO: XXX: currently not used by rsvpd?) * (2,3) = Shared tree (Reply only) * = 01 if the listed sender is using a shared tree, but some other * senders for the same destination use sender (source-specific) * trees. * = 10 if all senders for the destination use shared tree. * = 00 otherwise */ #define RSRR_NOTIFICATION_BIT 0 #define RSRR_ERROR_BIT 1 #define RSRR_THIS_SENDER_SHARED_TREE 2 #define RSRR_ALL_SENDERS_SHARED_TREE 3 #define RSRR_SET_ALL_SENDERS_SHARED_TREE(X) \ BIT_SET((X), RSRR_ALL_SENDERS_SHARED_TREE); \ BIT_CLR((X), RSRR_THIS_SENDER_SHARED_TREE); #define RSRR_THIS_SENDER_SHARED_TREE_SOME_OTHER_NOT(X) \ BIT_SET((X), RSRR_THIS_SENDER_SHARED_TREE); \ BIT_CLR((X), RSRR_ALL_SENDERS_SHARED_TREE) /* Definition of an RSRR message header. * An Initial Query uses only the header, and an Initial Reply uses * the header and a list of vifs. */ struct rsrr_header { u_int8 version; /* RSRR Version, currently 1 */ u_int8 type; /* type of message, as defined above*/ u_int8 flags; /* flags; defined by type */ u_int8 num; /* number; defined by type */ }; /* Definition of a vif as seen by the reservation protocol. * * Routing gives the reservation protocol a list of vifs in the * Initial Reply. * * We explicitly list the ID because we can't assume that all routing * protocols will use the same numbering scheme. * * The status is a bitmask of status flags, as defined above. It is the * responsibility of the reservation protocol to perform any status checks * if it uses the MULTICAST_VIF socket option. * * The threshold indicates the ttl an outgoing packet needs in order to * be forwarded. The reservation protocol must perform this check itself if * it uses the MULTICAST_VIF socket option. * * The local address is the address of the physical interface over which * packets are sent. */ struct rsrr_vif { u_int8 id; /* vif id */ u_int8 threshold; /* vif threshold ttl */ u_int16 status; /* vif status bitmask */ u_int32 local_addr; /* vif local address */ }; /* Definition of an RSRR Route Query. * * The query asks routing for the forwarding entry for a particular * source and destination. The query ID uniquely identifies the query * for the reservation protocol. Thus, the combination of the client's * address and the query ID forms a unique identifier for routing. * Flags are defined above. */ struct rsrr_rq { u_int32 dest_addr; /* destination */ u_int32 source_addr; /* source */ u_int32 query_id; /* query ID */ }; /* Definition of an RSRR Route Reply. * * Routing uses the reply to give the reservation protocol the * forwarding entry for a source-destination pair. Routing copies the * query ID from the query and fills in the incoming vif and a bitmask * of the outgoing vifs. * Flags are defined above. */ /* TODO: XXX: in_vif is 16 bits here, but in rsrr_vif it is 8 bits. * Bug in the spec? */ struct rsrr_rr { u_int32 dest_addr; /* destination */ u_int32 source_addr; /* source */ u_int32 query_id; /* query ID */ u_int16 in_vif; /* incoming vif */ u_int16 reserved; /* reserved */ u_int32 out_vif_bm; /* outgoing vif bitmask */ }; /* TODO: XXX: THIS IS NOT IN THE SPEC! (OBSOLETE?) */ #ifdef NOT_IN_THE_SPEC /* Definition of an RSRR Service Query/Reply. * * The query asks routing to perform a service for a particular * source/destination combination. The query also lists the vif * that the service applies to. */ struct rsrr_sqr { u_int32 dest_addr; /* destination */ u_int32 source_addr; /* source */ u_int32 query_id; /* query ID */ u_int16 vif; /* vif */ u_int16 reserved; /* reserved */ }; #endif /* NOT_IN_THE_SPEC */