/*
 * Copyright (C) 2003 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef __IP_HTABLE_H__
#define __IP_HTABLE_H__

#include "netinet/ip_lookup.h"

typedef struct  iphtent_s       {
        struct  iphtent_s       *ipe_next, **ipe_pnext;
        struct  iphtent_s       *ipe_snext, **ipe_psnext;
        void            *ipe_ptr;
        sa_family_t     ipe_family;
        i6addr_t        ipe_addr;
        i6addr_t        ipe_mask;
        U_QUAD_T        ipe_hits;
        U_QUAD_T        ipe_bytes;
        int             ipe_ref;
        union   {
                char    ipeu_char[16];
                u_long  ipeu_long;
                u_int   ipeu_int;
        }ipe_un;
} iphtent_t;

#define ipe_value       ipe_un.ipeu_int
#define ipe_group       ipe_un.ipeu_char

#define IPE_HASH_FN(a, m, s)    (((a) * (m)) % (s))


typedef struct  iphtable_s      {
        ipfrwlock_t     iph_rwlock;
        struct  iphtable_s      *iph_next, **iph_pnext;
        struct  iphtent_s       **iph_table;
        struct  iphtent_s       *iph_list;
        size_t  iph_size;               /* size of hash table */
        u_long  iph_seed;               /* hashing seed */
        u_32_t  iph_flags;
        u_int   iph_unit;               /* IPL_LOG* */
        u_int   iph_ref;
        u_int   iph_type;               /* lookup or group map  - IPHASH_* */
        u_int   iph_masks[4];           /* IPv4 or IPv6 netmasks in use */
        char    iph_name[FR_GROUPLEN];  /* hash table number */
} iphtable_t;


/* iph_type */
#define IPHASH_LOOKUP   0
#define IPHASH_GROUPMAP 1
#define IPHASH_ANON     0x80000000


typedef struct  iphtstat_s      {
        iphtable_t      *iphs_tables;
        u_long          iphs_numtables;
        u_long          iphs_numnodes;
        u_long          iphs_nomem;
        u_long          iphs_pad[16];
} iphtstat_t;


extern void fr_htable_unload __P((ipf_stack_t *));
extern int fr_newhtable __P((iplookupop_t *, ipf_stack_t *));
extern iphtable_t *fr_findhtable __P((int, char *, ipf_stack_t *));
extern int fr_removehtable __P((iplookupop_t *, ipf_stack_t *));
extern size_t fr_flushhtable __P((iplookupflush_t *, ipf_stack_t *));
extern int fr_addhtent __P((iphtable_t *, iphtent_t *, ipf_stack_t *));
extern int fr_delhtent __P((iphtable_t *, iphtent_t *, ipf_stack_t *));
extern void fr_derefhtable __P((iphtable_t *, ipf_stack_t *));
extern void fr_derefhtent __P((iphtent_t *));
extern void fr_delhtable __P((iphtable_t *, ipf_stack_t *));
extern void *fr_iphmfindgroup __P((void *, int, void *, ipf_stack_t *));
extern int fr_iphmfindip __P((void *, int, void *, fr_info_t *, ipf_stack_t *));
extern int fr_gethtablestat __P((iplookupop_t *, ipf_stack_t *));
extern int fr_htable_getnext __P((ipftoken_t *, ipflookupiter_t *, ipf_stack_t *));
extern void fr_htable_iterderef __P((u_int, int, void *, ipf_stack_t *));

#endif /* __IP_HTABLE_H__ */