/* $NetBSD: radix_ipf.h,v 1.1.1.1 2004/03/28 08:55:49 martti Exp $ */ /* * 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. * * 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 */ #ifndef _NET_RADIX_H_ #define _NET_RADIX_H_ #ifndef _RADIX_H_ #define _RADIX_H_ #endif /* _RADIX_H_ */ #ifndef __P # ifdef __STDC__ # define __P(x) x # else # define __P(x) () # endif #endif #ifdef __sgi # define radix_mask ipf_radix_mask # define radix_node ipf_radix_node # define radix_node_head ipf_radix_node_head #endif /* * Radix search tree node layout. */ struct radix_node { struct radix_mask *rn_mklist; /* list of masks contained in subtree */ struct radix_node *rn_p; /* parent */ short rn_b; /* 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 }; #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_off rn_u.rn_node.rn_Off #define rn_l rn_u.rn_node.rn_L #define rn_r rn_u.rn_node.rn_R /* * Annotations to tree concerning potential routes applying to subtrees. */ struct radix_mask { short rm_b; /* 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);} struct radix_node_head { struct radix_node *rnh_treetop; struct radix_node *rnh_leaflist; u_long rnh_hits; u_int rnh_number; u_int rnh_ref; 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 */ __P((void *v, void *mask, struct radix_node_head *head, struct radix_node nodes[])); struct radix_node *(*rnh_addpkt) /* add based on packet hdr */ __P((void *v, void *mask, struct radix_node_head *head, struct radix_node nodes[])); struct radix_node *(*rnh_deladdr) /* remove based on sockaddr */ __P((void *v, void *mask, struct radix_node_head *head)); struct radix_node *(*rnh_delpkt) /* remove based on packet hdr */ __P((void *v, void *mask, struct radix_node_head *head)); struct radix_node *(*rnh_matchaddr) /* locate based on sockaddr */ __P((void *v, struct radix_node_head *head)); struct radix_node *(*rnh_lookup) /* locate based on sockaddr */ __P((void *v, void *mask, struct radix_node_head *head)); struct radix_node *(*rnh_matchpkt) /* locate based on packet hdr */ __P((void *v, struct radix_node_head *head)); int (*rnh_walktree) /* traverse tree */ __P((struct radix_node_head *, int (*)(struct radix_node *, void *), void *)); struct radix_node rnh_nodes[3]; /* empty tree for common case */ }; #define Bcmp(a, b, n) bcmp(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n)) #if defined(linux) && defined(_KERNEL) # define Bcopy(a, b, n) memmove(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n)) #else # define Bcopy(a, b, n) bcopy(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n)) #endif #define Bzero(p, n) bzero((caddr_t)(p), (unsigned)(n)); #define R_Malloc(p, t, n) KMALLOCS(p, t, n) #define FreeS(p, z) KFREES(p, z) #define Free(p) KFREE(p) #if (defined(__osf__) || (IRIX >= 60516)) && defined(_KERNEL) # define rn_init ipf_rn_init # define rn_fini ipf_rn_fini # define rn_inithead ipf_rn_inithead # define rn_freehead ipf_rn_freehead # define rn_inithead0 ipf_rn_inithead0 # define rn_refines ipf_rn_refines # define rn_walktree ipf_rn_walktree # define rn_addmask ipf_rn_addmask # define rn_addroute ipf_rn_addroute # define rn_delete ipf_rn_delete # define rn_insert ipf_rn_insert # define rn_lookup ipf_rn_lookup # define rn_match ipf_rn_match # define rn_newpair ipf_rn_newpair # define rn_search ipf_rn_search # define rn_search_m ipf_rn_search_m # define max_keylen ipf_maxkeylen # define rn_mkfreelist ipf_rn_mkfreelist # define rn_zeros ipf_rn_zeros # define rn_ones ipf_rn_ones # define rn_satisfies_leaf ipf_rn_satisfies_leaf # define rn_lexobetter ipf_rn_lexobetter # define rn_new_radix_mask ipf_rn_new_radix_mask # define rn_freenode ipf_rn_freenode #endif void rn_init __P((void)); void rn_fini __P((void)); int rn_inithead __P((void **, int)); void rn_freehead __P((struct radix_node_head *)); int rn_inithead0 __P((struct radix_node_head *, int)); int rn_refines __P((void *, void *)); int rn_walktree __P((struct radix_node_head *, int (*)(struct radix_node *, void *), void *)); struct radix_node *rn_addmask __P((void *, int, int)), *rn_addroute __P((void *, void *, struct radix_node_head *, struct radix_node [2])), *rn_delete __P((void *, void *, struct radix_node_head *)), *rn_insert __P((void *, struct radix_node_head *, int *, struct radix_node [2])), *rn_lookup __P((void *, void *, struct radix_node_head *)), *rn_match __P((void *, struct radix_node_head *)), *rn_newpair __P((void *, int, struct radix_node[2])), *rn_search __P((void *, struct radix_node *)), *rn_search_m __P((void *, struct radix_node *, void *)); #endif /* _NET_RADIX_H_ */