/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1988, 1989 Apple Computer, Inc. */ #ifndef _NETAT_AT_DDP_BRT_H_ #define _NETAT_AT_DDP_BRT_H_ #include <sys/appleapiopts.h> #ifdef KERNEL_PRIVATE #ifdef __APPLE_API_OBSOLETE typedef struct { int age_flag; at_ifaddr_t *ifID; struct etalk_addr et_addr; at_net_al net; } ddp_brt_t; #define BRT_SWEEP_INT (10 * PR_SLOWHZ) #define BRT_BSIZ 4 /* bucket size */ #define BRT_NB 16 /* number of buckets */ #define BRTSIZE (BRT_BSIZ * BRT_NB) /* age_flag values */ #define BRT_EMPTY 0 /* the BRT entry is empty */ /* (or aged out). */ #define BRT_VALID 1 /* BRT entry contains valid */ /* tuple */ #define BRT_GETTING_OLD 2 /* BRT entry is a candidate */ /* for aging */ #define BRT_HASH(a) ((a) % BRT_NB) #define BRT_LOOK(brt, dst_net) { \ int n; \ brt = &at_ddp_brt[BRT_HASH(dst_net) * BRT_BSIZ]; \ for (n = 0 ; ; brt++) { \ if (brt->net == dst_net) \ break; \ if (++n >= BRT_BSIZ) { \ brt = NULL; \ break; \ } \ } \ } #define NEW_BRT(brt, net) { \ int n; \ brt = &at_ddp_brt[BRT_HASH(net) * BRT_BSIZ]; \ for (n = 0 ; ; brt++) { \ if (brt->age_flag == BRT_EMPTY) \ break; \ if (++n >= BRT_BSIZ) { \ brt = NULL; \ break; \ } \ } \ } /* Best Router Cache */ extern ddp_brt_t at_ddp_brt[BRTSIZE]; #endif /* __APPLE_API_OBSOLETE */ #endif /* KERNEL_PRIVATE */ #endif /* _NETAT_AT_DDP_BRT_H_ */