/* * Copyright (c) 2000-2008 Apple 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, 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. * * @(#)radix.h 8.2 (Berkeley) 10/31/94 * $FreeBSD: src/sys/net/radix.h,v 1.16.2.1 2000/05/03 19:17:11 wollman Exp $ */ #ifndef _RADIX_H_ #define _RADIX_H_ #include <sys/appleapiopts.h> #ifdef PRIVATE #ifdef MALLOC_DECLARE MALLOC_DECLARE(M_RTABLE); #endif /* * Radix search tree node layout. */ struct radix_node { struct radix_mask *rn_mklist; /* list of masks contained in subtree */ struct radix_node *rn_parent; /* parent */ short rn_bit; /* bit offset; -1-index(netmask) */ char rn_bmask; /* node: mask for bit test*/ u_char rn_flags; /* enumerated next */ #define RNF_NORMAL 1 /* leaf contains normal route */ #define RNF_ROOT 2 /* leaf is root leaf for tree */ #define RNF_ACTIVE 4 /* This node is alive (for rtfree) */ union { struct { /* leaf only data: */ caddr_t rn_Key; /* object of search */ caddr_t rn_Mask; /* netmask, if present */ struct radix_node *rn_Dupedkey; } rn_leaf; struct { /* node only data: */ int rn_Off; /* where to start compare */ struct radix_node *rn_L;/* progeny */ struct radix_node *rn_R;/* progeny */ } rn_node; } rn_u; #ifdef RN_DEBUG int rn_info; struct radix_node *rn_twin; struct radix_node *rn_ybro; #endif #if __arm__ && (__BIGGEST_ALIGNMENT__ > 4) /* For the newer ARMv7k ABI where 64-bit types are 64-bit aligned, but pointers * are 32-bit: * Aligned to 64-bit since this is cast to rtentry, which is 64-bit aligned. */ } __attribute__ ((aligned(8))); #else }; #endif #define rn_dupedkey rn_u.rn_leaf.rn_Dupedkey #define rn_key rn_u.rn_leaf.rn_Key #define rn_mask rn_u.rn_leaf.rn_Mask #define rn_offset rn_u.rn_node.rn_Off #define rn_left rn_u.rn_node.rn_L #define rn_right rn_u.rn_node.rn_R /* * Annotations to tree concerning potential routes applying to subtrees. */ struct radix_mask { short rm_bit; /* bit offset; -1-index(netmask) */ char rm_unused; /* cf. rn_bmask */ u_char rm_flags; /* cf. rn_flags */ struct radix_mask *rm_mklist; /* more masks to try */ union { caddr_t rmu_mask; /* the mask */ struct radix_node *rmu_leaf; /* for normal routes */ } rm_rmu; int rm_refs; /* # of references to this struct */ }; #define rm_mask rm_rmu.rmu_mask #define rm_leaf rm_rmu.rmu_leaf /* extra field would make 32 bytes */ #define MKGet(m) {\ if (rn_mkfreelist) {\ m = rn_mkfreelist; \ rn_mkfreelist = (m)->rm_mklist; \ } else \ R_Malloc(m, struct radix_mask *, sizeof (*(m))); }\ #define MKFree(m) { (m)->rm_mklist = rn_mkfreelist; rn_mkfreelist = (m);} typedef int walktree_f_t(struct radix_node *, void *); typedef int rn_matchf_t(struct radix_node *, void *); struct radix_node_head { struct radix_node *rnh_treetop; int rnh_addrsize; /* permit, but not require fixed keys */ int rnh_pktsize; /* permit, but not require fixed keys */ struct radix_node *(*rnh_addaddr) /* add based on sockaddr */ (void *v, void *mask, struct radix_node_head *head, struct radix_node nodes[]); struct radix_node *(*rnh_addpkt) /* add based on packet hdr */ (void *v, void *mask, struct radix_node_head *head, struct radix_node nodes[]); struct radix_node *(*rnh_deladdr) /* remove based on sockaddr */ (void *v, void *mask, struct radix_node_head *head); struct radix_node *(*rnh_delpkt) /* remove based on packet hdr */ (void *v, void *mask, struct radix_node_head *head); struct radix_node *(*rnh_matchaddr) /* locate based on sockaddr */ (void *v, struct radix_node_head *head); /* locate based on sockaddr and rn_matchf_t() */ struct radix_node *(*rnh_matchaddr_args) (void *v, struct radix_node_head *head, rn_matchf_t *f, void *w); struct radix_node *(*rnh_lookup) /* locate based on sockaddr */ (void *v, void *mask, struct radix_node_head *head); /* locate based on sockaddr, mask and rn_matchf_t() */ struct radix_node *(*rnh_lookup_args) (void *v, void *mask, struct radix_node_head *head, rn_matchf_t *f, void *); struct radix_node *(*rnh_matchpkt) /* locate based on packet hdr */ (void *v, struct radix_node_head *head); int (*rnh_walktree) /* traverse tree */ (struct radix_node_head *head, walktree_f_t *f, void *w); int (*rnh_walktree_from) /* traverse tree below a */ (struct radix_node_head *head, void *a, void *m, walktree_f_t *f, void *w); void (*rnh_close) /* do something when the last ref drops */ (struct radix_node *rn, struct radix_node_head *head); struct radix_node rnh_nodes[3]; /* empty tree for common case */ int rnh_cnt; /* tree dimension */ }; #ifndef KERNEL #define Bcmp(a, b, n) bcmp(((char *)(a)), ((char *)(b)), (n)) #define Bcopy(a, b, n) bcopy(((char *)(a)), ((char *)(b)), (unsigned)(n)) #define Bzero(p, n) bzero((char *)(p), (int)(n)); #define R_Malloc(p, t, n) (p = (t) malloc((unsigned int)(n))) #define R_Free(p) free((char *)p); #else #define Bcmp(a, b, n) bcmp(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n)) #define Bcopy(a, b, n) bcopy(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n)) #define Bzero(p, n) bzero((caddr_t)(p), (unsigned)(n)); #define R_Malloc(p, t, n) (p = (t) _MALLOC((uint32_t)(n), M_RTABLE, M_WAITOK)) #define R_Free(p) _FREE((caddr_t)p, M_RTABLE); #endif /*KERNEL*/ void rn_init(void); int rn_inithead(void **, int); int rn_refines(void *, void *); struct radix_node *rn_addmask(void *, int, int), *rn_addroute(void *, void *, struct radix_node_head *, struct radix_node [2]), *rn_delete(void *, void *, struct radix_node_head *), *rn_lookup(void *v_arg, void *m_arg, struct radix_node_head *head), *rn_lookup_args(void *v_arg, void *m_arg, struct radix_node_head *head, rn_matchf_t *, void *), *rn_match(void *, struct radix_node_head *), *rn_match_args(void *, struct radix_node_head *, rn_matchf_t *, void *); #endif /* PRIVATE */ #endif /* _RADIX_H_ */