include/netinet/ip_htable.h

   1 /*
   2  * Copyright (C) 2003 by Darren Reed.
   3  *
   4  * See the IPFILTER.LICENCE file for details on licencing.
   5  *
   6  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   7  */
   8
   9 #ifndef __IP_HTABLE_H__
  10 #define __IP_HTABLE_H__
  11
  12 #include "netinet/ip_lookup.h"
  13
  14 typedef struct  iphtent_s       {
  15         struct  iphtent_s       *ipe_next, **ipe_pnext;
  16         struct  iphtent_s       *ipe_snext, **ipe_psnext;
  17         void            *ipe_ptr;
  18         sa_family_t     ipe_family;
  19         i6addr_t        ipe_addr;
  20         i6addr_t        ipe_mask;
  21         U_QUAD_T        ipe_hits;
  22         U_QUAD_T        ipe_bytes;
  23         int             ipe_ref;
  24         union   {
  25                 char    ipeu_char[16];
  26                 u_long  ipeu_long;
  27                 u_int   ipeu_int;
  28         }ipe_un;
  29 } iphtent_t;
  30
  31 #define ipe_value       ipe_un.ipeu_int
  32 #define ipe_group       ipe_un.ipeu_char
  33
  34 #define IPE_HASH_FN(a, m, s)    (((a) * (m)) % (s))
  35
  36
  37 typedef struct  iphtable_s      {
  38         ipfrwlock_t     iph_rwlock;
  39         struct  iphtable_s      *iph_next, **iph_pnext;
  40         struct  iphtent_s       **iph_table;
  41         struct  iphtent_s       *iph_list;
  42         size_t  iph_size;               /* size of hash table */
  43         u_long  iph_seed;               /* hashing seed */
  44         u_32_t  iph_flags;
  45         u_int   iph_unit;               /* IPL_LOG* */
  46         u_int   iph_ref;
  47         u_int   iph_type;               /* lookup or group map  - IPHASH_* */
  48         u_int   iph_masks[4];           /* IPv4 or IPv6 netmasks in use */
  49         char    iph_name[FR_GROUPLEN];  /* hash table number */
  50 } iphtable_t;
  51
  52
  53 /* iph_type */
  54 #define IPHASH_LOOKUP   0
  55 #define IPHASH_GROUPMAP 1
  56 #define IPHASH_ANON     0x80000000
  57
  58
  59 typedef struct  iphtstat_s      {
  60         iphtable_t      *iphs_tables;
  61         u_long          iphs_numtables;
  62         u_long          iphs_numnodes;
  63         u_long          iphs_nomem;
  64         u_long          iphs_pad[16];
  65 } iphtstat_t;
  66
  67
  68 extern void fr_htable_unload __P((ipf_stack_t *));
  69 extern int fr_newhtable __P((iplookupop_t *, ipf_stack_t *));
  70 extern iphtable_t *fr_findhtable __P((int, char *, ipf_stack_t *));
  71 extern int fr_removehtable __P((iplookupop_t *, ipf_stack_t *));
  72 extern size_t fr_flushhtable __P((iplookupflush_t *, ipf_stack_t *));
  73 extern int fr_addhtent __P((iphtable_t *, iphtent_t *, ipf_stack_t *));
  74 extern int fr_delhtent __P((iphtable_t *, iphtent_t *, ipf_stack_t *));
  75 extern void fr_derefhtable __P((iphtable_t *, ipf_stack_t *));
  76 extern void fr_derefhtent __P((iphtent_t *));
  77 extern void fr_delhtable __P((iphtable_t *, ipf_stack_t *));
  78 extern void *fr_iphmfindgroup __P((void *, int, void *, ipf_stack_t *));
  79 extern int fr_iphmfindip __P((void *, int, void *, fr_info_t *, ipf_stack_t *));
  80 extern int fr_gethtablestat __P((iplookupop_t *, ipf_stack_t *));
  81 extern int fr_htable_getnext __P((ipftoken_t *, ipflookupiter_t *, ipf_stack_t *));
  82 extern void fr_htable_iterderef __P((u_int, int, void *, ipf_stack_t *));
  83
  84 #endif /* __IP_HTABLE_H__ */