net/netlabel/netlabel_domainhash.h

   1 /*
   2  * NetLabel Domain Hash Table
   3  *
   4  * This file manages the domain hash table that NetLabel uses to determine
   5  * which network labeling protocol to use for a given domain.  The NetLabel
   6  * system manages static and dynamic label mappings for network protocols such
   7  * as CIPSO and RIPSO.
   8  *
   9  * Author: Paul Moore <paul.moore@hp.com>
  10  *
  11  */
  12
  13 /*
  14  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
  15  *
  16  * This program is free software;  you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  24  * the GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program;  if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  *
  30  */
  31
  32 #ifndef _NETLABEL_DOMAINHASH_H
  33 #define _NETLABEL_DOMAINHASH_H
  34
  35 /* Domain hash table size */
  36 /* XXX - currently this number is an uneducated guess */
  37 #define NETLBL_DOMHSH_BITSIZE       7
  38
  39 /* Domain mapping definition struct */
  40 struct netlbl_dom_map {
  41         char *domain;
  42         u32 type;
  43         union {
  44                 struct cipso_v4_doi *cipsov4;
  45         } type_def;
  46
  47         u32 valid;
  48         struct list_head list;
  49         struct rcu_head rcu;
  50 };
  51
  52 /* init function */
  53 int netlbl_domhsh_init(u32 size);
  54
  55 /* Manipulate the domain hash table */
  56 int netlbl_domhsh_add(struct netlbl_dom_map *entry);
  57 int netlbl_domhsh_add_default(struct netlbl_dom_map *entry);
  58 int netlbl_domhsh_remove_default(void);
  59 struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain);
  60 struct sk_buff *netlbl_domhsh_dump(size_t headroom);
  61 struct sk_buff *netlbl_domhsh_dump_default(size_t headroom);
  62
  63 #endif