1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _IPP_IPGPC_TRIE_H 28*0Sstevel@tonic-gate #define _IPP_IPGPC_TRIE_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <ipp/ipgpc/classifier-objects.h> 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #ifdef __cplusplus 35*0Sstevel@tonic-gate extern "C" { 36*0Sstevel@tonic-gate #endif 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate /* 39*0Sstevel@tonic-gate * Header file for trie data structure used to hold keys of non-exact match 40*0Sstevel@tonic-gate * selectors 41*0Sstevel@tonic-gate */ 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #ifdef _LITTLE_ENDIAN 44*0Sstevel@tonic-gate /* 45*0Sstevel@tonic-gate * given the length of a key, and the desired bit position, compute the 46*0Sstevel@tonic-gate * correct bit position assuming and NBO key on a _LITTLE_ENDIAN machine 47*0Sstevel@tonic-gate */ 48*0Sstevel@tonic-gate #define COMPUTE_BIT_POS(len, pos) \ 49*0Sstevel@tonic-gate (((len - pos - 1) & 0xf8) | (pos & 0x7)) 50*0Sstevel@tonic-gate #endif /* _LITTLE_ENDIAN */ 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate /* 53*0Sstevel@tonic-gate * extracts a single bit at position pos from a given value, val, for an 54*0Sstevel@tonic-gate * unsigned integer of length len. len will be equal to either 16 or 32 55*0Sstevel@tonic-gate */ 56*0Sstevel@tonic-gate #define EXTRACTBIT_CMN(val, pos) ((val >> pos) & 1) 57*0Sstevel@tonic-gate #ifdef _BIG_ENDIAN 58*0Sstevel@tonic-gate #define EXTRACTBIT(val, pos, len) (EXTRACTBIT_CMN(val, pos)) 59*0Sstevel@tonic-gate #else /* _LITTLE_ENDIAN */ 60*0Sstevel@tonic-gate #define EXTRACTBIT(val, pos, len) \ 61*0Sstevel@tonic-gate (EXTRACTBIT_CMN(val, (COMPUTE_BIT_POS(len, pos)))) 62*0Sstevel@tonic-gate #endif /* _BIG_ENDIAN */ 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate /* sets the bit at position pos of num to 1 if val == 1 */ 65*0Sstevel@tonic-gate #define SETBIT_CMN(num, pos, val) (num |= (val << pos)) 66*0Sstevel@tonic-gate #ifdef _BIG_ENDIAN 67*0Sstevel@tonic-gate #define SETBIT(num, pos, val, len) (SETBIT_CMN(num, pos, val)) 68*0Sstevel@tonic-gate #else /* _LITTLE_ENDIAN */ 69*0Sstevel@tonic-gate #define SETBIT(num, pos, val, len) \ 70*0Sstevel@tonic-gate (SETBIT_CMN(num, (COMPUTE_BIT_POS(len, pos)), val)) 71*0Sstevel@tonic-gate #endif /* _BIG_ENDIAN */ 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate /* sets the bit at position pos of num to 0 */ 74*0Sstevel@tonic-gate #define UNSETBIT_CMN(num, pos) (num &= (~(1 << pos))) 75*0Sstevel@tonic-gate #ifdef _BIG_ENDIAN 76*0Sstevel@tonic-gate #define UNSETBIT(num, pos, len) (UNSETBIT_CMN(num, pos)) 77*0Sstevel@tonic-gate #else /* _LITTLE_ENDIAN */ 78*0Sstevel@tonic-gate #define UNSETBIT(num, pos, len) \ 79*0Sstevel@tonic-gate (UNSETBIT_CMN(num, (COMPUTE_BIT_POS(len, pos)))) 80*0Sstevel@tonic-gate #endif /* _BIG_ENDIAN */ 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate extern node_t *create_node(int); 83*0Sstevel@tonic-gate extern int t_insert(trie_id_t *, key_t, uint32_t, uint32_t); 84*0Sstevel@tonic-gate extern int t_insert6(trie_id_t *, key_t, in6_addr_t, in6_addr_t); 85*0Sstevel@tonic-gate extern void t_remove(trie_id_t *, key_t, uint32_t, uint32_t); 86*0Sstevel@tonic-gate extern void t_remove6(trie_id_t *, key_t, in6_addr_t, in6_addr_t); 87*0Sstevel@tonic-gate extern int t_retrieve(trie_id_t *, uint32_t, ht_match_t *); 88*0Sstevel@tonic-gate extern int t_retrieve6(trie_id_t *, in6_addr_t, ht_match_t *); 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate #ifdef __cplusplus 91*0Sstevel@tonic-gate } 92*0Sstevel@tonic-gate #endif 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate #endif /* _IPP_IPGPC_TRIE_H */ 95