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1.1 root 1: /*
2: * Copyright (c) 1988, 1989 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
1.1.1.2 ! root 33: * from: @(#)radix.h 7.4 (Berkeley) 6/28/90
! 34: * radix.h,v 1.3 1993/05/20 03:06:08 cgd Exp
1.1 root 35: */
36:
1.1.1.2 ! root 37: #ifndef _NET_RADIX_H_
! 38: #define _NET_RADIX_H_
! 39:
1.1 root 40: /*
41: * Radix search tree node layout.
42: */
43:
44: struct radix_node {
45: struct radix_mask *rn_mklist; /* list of masks contained in subtree */
46: struct radix_node *rn_p; /* parent */
47: short rn_b; /* bit offset; -1-index(netmask) */
48: char rn_bmask; /* node: mask for bit test*/
49: u_char rn_flags; /* enumerated next */
50: #define RNF_NORMAL 1 /* leaf contains normal route */
51: #define RNF_ROOT 2 /* leaf is root leaf for tree */
52: #define RNF_ACTIVE 4 /* This node is alive (for rtfree) */
53: union {
54: struct { /* leaf only data: */
55: caddr_t rn_Key; /* object of search */
56: caddr_t rn_Mask; /* netmask, if present */
57: struct radix_node *rn_Dupedkey;
58: } rn_leaf;
59: struct { /* node only data: */
60: int rn_Off; /* where to start compare */
61: struct radix_node *rn_L;/* progeny */
62: struct radix_node *rn_R;/* progeny */
63: }rn_node;
64: } rn_u;
65: #ifdef RN_DEBUG
66: int rn_info;
67: struct radix_node *rn_twin;
68: struct radix_node *rn_ybro;
69: #endif
70: };
71:
72: #define MAXKEYLEN 32
73:
74: #define rn_dupedkey rn_u.rn_leaf.rn_Dupedkey
75: #define rn_key rn_u.rn_leaf.rn_Key
76: #define rn_mask rn_u.rn_leaf.rn_Mask
77: #define rn_off rn_u.rn_node.rn_Off
78: #define rn_l rn_u.rn_node.rn_L
79: #define rn_r rn_u.rn_node.rn_R
80:
81: /*
82: * Annotations to tree concerning potential routes applying to subtrees.
83: */
84:
85: extern struct radix_mask {
86: short rm_b; /* bit offset; -1-index(netmask) */
87: char rm_unused; /* cf. rn_bmask */
88: u_char rm_flags; /* cf. rn_flags */
89: struct radix_mask *rm_mklist; /* more masks to try */
90: caddr_t rm_mask; /* the mask */
91: int rm_refs; /* # of references to this struct */
92: } *rn_mkfreelist;
93:
94: #define MKGet(m) {\
95: if (rn_mkfreelist) {\
96: m = rn_mkfreelist; \
97: rn_mkfreelist = (m)->rm_mklist; \
98: } else \
99: R_Malloc(m, struct radix_mask *, sizeof (*(m))); }\
100:
101: #define MKFree(m) { (m)->rm_mklist = rn_mkfreelist; rn_mkfreelist = (m);}
102:
103: extern struct radix_node_head {
104: struct radix_node_head *rnh_next;
105: struct radix_node *rnh_treetop;
106: int rnh_af;
107: struct radix_node rnh_nodes[3];
108: } *radix_node_head;
109:
110:
111: #ifndef KERNEL
112: #define Bcmp(a, b, n) bcmp(((char *)(a)), ((char *)(b)), (n))
113: #define Bzero(p, n) bzero((char *)(p), (int)(n));
114: #define R_Malloc(p, t, n) (p = (t) malloc((unsigned int)(n)))
115: #define Free(p) free((char *)p);
116: #else
117: #define Bcmp(a, b, n) bcmp(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n))
118: #define Bcopy(a, b, n) bcopy(((caddr_t)(a)), ((caddr_t)(b)), (unsigned)(n))
119: #define Bzero(p, n) bzero((caddr_t)(p), (unsigned)(n));
120: #define R_Malloc(p, t, n) (p = (t) malloc((unsigned long)(n), M_RTABLE, M_DONTWAIT))
121: #define Free(p) free((caddr_t)p, M_RTABLE);
122: #endif /*KERNEL*/
1.1.1.2 ! root 123:
! 124: #endif /* !_NET_RADIX_H_ */
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