mirror of
https://github.com/pavel-odintsov/fastnetmon
synced 2024-11-23 21:43:14 +01:00
161 lines
4.4 KiB
C
161 lines
4.4 KiB
C
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* $Id: patricia.h,v 1.6 2005/12/07 20:53:01 dplonka Exp $
|
|
* Dave Plonka <plonka@doit.wisc.edu>
|
|
*
|
|
* This product includes software developed by the University of Michigan,
|
|
* Merit Network, Inc., and their contributors.
|
|
*
|
|
* This file had been called "radix.h" in the MRT sources.
|
|
*
|
|
* I renamed it to "patricia.h" since it's not an implementation of a general
|
|
* radix trie. Also, pulled in various requirements from "mrt.h" and added
|
|
* some other things it could be used as a standalone API.
|
|
*/
|
|
|
|
#ifndef _PATRICIA_H
|
|
#define _PATRICIA_H
|
|
|
|
#define HAVE_IPV6
|
|
|
|
/* typedef unsigned int u_int; */
|
|
typedef void (*void_fn_t)();
|
|
/* { from defs.h */
|
|
#define prefix_touchar(prefix) ((u_char *)&(prefix)->add.sin)
|
|
#define MAXLINE 1024
|
|
#define BIT_TEST(f, b) ((f) & (b))
|
|
/* } */
|
|
|
|
#define addroute make_and_lookup
|
|
|
|
#include <sys/types.h> /* for u_* definitions (on FreeBSD 5) */
|
|
|
|
#include <errno.h> /* for EAFNOSUPPORT */
|
|
#ifndef EAFNOSUPPORT
|
|
# defined EAFNOSUPPORT WSAEAFNOSUPPORT
|
|
# include <winsock.h>
|
|
#else
|
|
# include <netinet/in.h> /* for struct in_addr */
|
|
#endif
|
|
|
|
#include <sys/socket.h> /* for AF_INET */
|
|
|
|
/* { from mrt.h */
|
|
|
|
typedef struct _prefix4_t {
|
|
u_short family; /* AF_INET | AF_INET6 */
|
|
u_short bitlen; /* same as mask? */
|
|
int ref_count; /* reference count */
|
|
struct in_addr sin;
|
|
} prefix4_t;
|
|
|
|
typedef struct _prefix_t {
|
|
u_short family; /* AF_INET | AF_INET6 */
|
|
u_short bitlen; /* same as mask? */
|
|
int ref_count; /* reference count */
|
|
union {
|
|
struct in_addr sin;
|
|
#ifdef HAVE_IPV6
|
|
struct in6_addr sin6;
|
|
#endif /* IPV6 */
|
|
} add;
|
|
} prefix_t;
|
|
|
|
/* } */
|
|
|
|
typedef struct _patricia_node_t {
|
|
u_int bit; /* flag if this node used */
|
|
prefix_t *prefix; /* who we are in patricia tree */
|
|
struct _patricia_node_t *l, *r; /* left and right children */
|
|
struct _patricia_node_t *parent;/* may be used */
|
|
void *data; /* pointer to data */
|
|
void *user1; /* pointer to usr data (ex. route flap info) */
|
|
} patricia_node_t;
|
|
|
|
typedef struct _patricia_tree_t {
|
|
patricia_node_t *head;
|
|
u_int maxbits; /* for IP, 32 bit addresses */
|
|
int num_active_node; /* for debug purpose */
|
|
} patricia_tree_t;
|
|
|
|
|
|
patricia_node_t *patricia_search_exact (patricia_tree_t *patricia, prefix_t *prefix);
|
|
patricia_node_t *patricia_search_best (patricia_tree_t *patricia, prefix_t *prefix);
|
|
patricia_node_t * patricia_search_best2 (patricia_tree_t *patricia, prefix_t *prefix,
|
|
int inclusive);
|
|
patricia_node_t *patricia_lookup (patricia_tree_t *patricia, prefix_t *prefix);
|
|
void patricia_remove (patricia_tree_t *patricia, patricia_node_t *node);
|
|
patricia_tree_t *New_Patricia (int maxbits);
|
|
void Clear_Patricia (patricia_tree_t *patricia, void_fn_t func);
|
|
void Destroy_Patricia (patricia_tree_t *patricia, void_fn_t func);
|
|
|
|
void patricia_process (patricia_tree_t *patricia, void_fn_t func);
|
|
|
|
char *prefix_toa (prefix_t * prefix);
|
|
|
|
/* { from demo.c */
|
|
|
|
prefix_t *
|
|
ascii2prefix (int family, char *string);
|
|
|
|
patricia_node_t *
|
|
make_and_lookup (patricia_tree_t *tree, char *string);
|
|
|
|
/* } */
|
|
|
|
#define PATRICIA_MAXBITS (sizeof(struct in6_addr) * 8)
|
|
#define PATRICIA_NBIT(x) (0x80 >> ((x) & 0x7f))
|
|
#define PATRICIA_NBYTE(x) ((x) >> 3)
|
|
|
|
#define PATRICIA_DATA_GET(node, type) (type *)((node)->data)
|
|
#define PATRICIA_DATA_SET(node, value) ((node)->data = (void *)(value))
|
|
|
|
#define PATRICIA_WALK(Xhead, Xnode) \
|
|
do { \
|
|
patricia_node_t *Xstack[PATRICIA_MAXBITS+1]; \
|
|
patricia_node_t **Xsp = Xstack; \
|
|
patricia_node_t *Xrn = (Xhead); \
|
|
while ((Xnode = Xrn)) { \
|
|
if (Xnode->prefix)
|
|
|
|
#define PATRICIA_WALK_ALL(Xhead, Xnode) \
|
|
do { \
|
|
patricia_node_t *Xstack[PATRICIA_MAXBITS+1]; \
|
|
patricia_node_t **Xsp = Xstack; \
|
|
patricia_node_t *Xrn = (Xhead); \
|
|
while ((Xnode = Xrn)) { \
|
|
if (1)
|
|
|
|
#define PATRICIA_WALK_BREAK { \
|
|
if (Xsp != Xstack) { \
|
|
Xrn = *(--Xsp); \
|
|
} else { \
|
|
Xrn = (patricia_node_t *) 0; \
|
|
} \
|
|
continue; }
|
|
|
|
#define PATRICIA_WALK_END \
|
|
if (Xrn->l) { \
|
|
if (Xrn->r) { \
|
|
*Xsp++ = Xrn->r; \
|
|
} \
|
|
Xrn = Xrn->l; \
|
|
} else if (Xrn->r) { \
|
|
Xrn = Xrn->r; \
|
|
} else if (Xsp != Xstack) { \
|
|
Xrn = *(--Xsp); \
|
|
} else { \
|
|
Xrn = (patricia_node_t *) 0; \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
#endif /* _PATRICIA_H */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|