* Copyright (c) 1988, 1989 Regents of the University of California.
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* @(#)radix.h 7.3 (Berkeley) %G%
* Radix search tree node layout.
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) */
struct { /* leaf only data: */
caddr_t rn_Key
; /* object of search */
caddr_t rn_Mask
; /* netmask, if present */
struct radix_node
*rn_Dupedkey
;
struct { /* node only data: */
int rn_Off
; /* where to start compare */
struct radix_node
*rn_L
;/* progeny */
struct radix_node
*rn_R
;/* progeny */
struct radix_node
*rn_twin
;
struct radix_node
*rn_ybro
;
#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.
extern 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 */
caddr_t rm_mask
; /* the mask */
int rm_refs
; /* # of references to this struct */
rn_mkfreelist = (m)->rm_mklist; \
R_Malloc(m, struct radix_mask *, sizeof (*(m))); }\
#define MKFree(m) { (m)->rm_mklist = rn_mkfreelist; rn_mkfreelist = (m);}
extern struct radix_node_head
{
struct radix_node_head
*rnh_next
;
struct radix_node
*rnh_treetop
;
struct radix_node rnh_nodes
[3];
#define Bcmp(a, b, n) bcmp(((char *)(a)), ((char *)(b)), (n))
#define Bzero(p, n) bzero((char *)(p), (int)(n));
#define R_Malloc(p, t, n) (p = (t) malloc((unsigned int)(n)))
#define Free(p) free((char *)p);
#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((unsigned long)(n), M_RTABLE, M_DONTWAIT))
#define Free(p) free((caddr_t)p, M_RTABLE);