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/* $FreeBSD$ */
/*
* Copyright (C) 2012 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*/
#ifndef __RADIX_IPF_H__
#define __RADIX_IPF_H__
#ifndef U_32_T
typedef unsigned int u_32_t;
# define U_32_T 1
#endif
typedef struct ipf_rdx_mask {
struct ipf_rdx_mask *next;
struct ipf_rdx_node *node;
u_32_t *mask;
int maskbitcount;
} ipf_rdx_mask_t;
typedef struct ipf_rdx_node {
struct ipf_rdx_node *left;
struct ipf_rdx_node *right;
struct ipf_rdx_node *parent;
struct ipf_rdx_node *dupkey;
struct ipf_rdx_mask *masks;
struct ipf_rdx_mask *mymask;
u_32_t *addrkey;
u_32_t *maskkey;
u_32_t *addroff;
u_32_t *maskoff;
u_32_t lastmask;
u_32_t bitmask;
int offset;
int index;
int maskbitcount;
int root;
#ifdef RDX_DEBUG
char name[40];
#endif
} ipf_rdx_node_t;
struct ipf_rdx_head;
typedef void (* radix_walk_func_t)(ipf_rdx_node_t *, void *);
typedef ipf_rdx_node_t *(* idx_hamn_func_t)(struct ipf_rdx_head *,
addrfamily_t *, addrfamily_t *,
ipf_rdx_node_t *);
typedef ipf_rdx_node_t *(* idx_ham_func_t)(struct ipf_rdx_head *,
addrfamily_t *, addrfamily_t *);
typedef ipf_rdx_node_t *(* idx_ha_func_t)(struct ipf_rdx_head *,
addrfamily_t *);
typedef void (* idx_walk_func_t)(struct ipf_rdx_head *,
radix_walk_func_t, void *);
typedef struct ipf_rdx_head {
ipf_rdx_node_t *root;
ipf_rdx_node_t nodes[3];
ipfmutex_t lock;
idx_hamn_func_t addaddr; /* add addr/mask to tree */
idx_ham_func_t deladdr; /* delete addr/mask from tree */
idx_ham_func_t lookup; /* look for specific addr/mask */
idx_ha_func_t matchaddr; /* search tree for address match */
idx_walk_func_t walktree; /* walk entire tree */
} ipf_rdx_head_t;
typedef struct radix_softc {
u_char *zeros;
u_char *ones;
} radix_softc_t;
#undef RADIX_NODE_HEAD_LOCK
#undef RADIX_NODE_HEAD_UNLOCK
#ifdef _KERNEL
# define RADIX_NODE_HEAD_LOCK(x) MUTEX_ENTER(&(x)->lock)
# define RADIX_NODE_HEAD_UNLOCK(x) MUTEX_UNLOCK(&(x)->lock)
#else
# define RADIX_NODE_HEAD_LOCK(x)
# define RADIX_NODE_HEAD_UNLOCK(x)
#endif
extern void *ipf_rx_create __P((void));
extern int ipf_rx_init __P((void *));
extern void ipf_rx_destroy __P((void *));
extern int ipf_rx_inithead __P((radix_softc_t *, ipf_rdx_head_t **));
extern void ipf_rx_freehead __P((ipf_rdx_head_t *));
extern ipf_rdx_node_t *ipf_rx_addroute __P((ipf_rdx_head_t *,
addrfamily_t *, addrfamily_t *,
ipf_rdx_node_t *));
extern ipf_rdx_node_t *ipf_rx_delete __P((ipf_rdx_head_t *, addrfamily_t *,
addrfamily_t *));
extern void ipf_rx_walktree __P((ipf_rdx_head_t *, radix_walk_func_t,
void *));
#endif /* __RADIX_IPF_H__ */
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