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 #include <linux/types.h> 36 #include <linux/rcupdate.h> 37 #include <linux/list.h> 38 39 /* Domain hash table size */ 40 /* XXX - currently this number is an uneducated guess */ 41 #define NETLBL_DOMHSH_BITSIZE 7 42 43 /* Domain mapping definition struct */ 44 struct netlbl_dom_map { 45 char *domain; 46 u32 type; 47 union { 48 struct cipso_v4_doi *cipsov4; 49 } type_def; 50 51 u32 valid; 52 struct list_head list; 53 struct rcu_head rcu; 54 }; 55 56 /* init function */ 57 int netlbl_domhsh_init(u32 size); 58 59 /* Manipulate the domain hash table */ 60 int netlbl_domhsh_add(struct netlbl_dom_map *entry, 61 struct netlbl_audit *audit_info); 62 int netlbl_domhsh_add_default(struct netlbl_dom_map *entry, 63 struct netlbl_audit *audit_info); 64 int netlbl_domhsh_remove_default(struct netlbl_audit *audit_info); 65 struct netlbl_dom_map *netlbl_domhsh_getentry(const char *domain); 66 int netlbl_domhsh_walk(u32 *skip_bkt, 67 u32 *skip_chain, 68 int (*callback) (struct netlbl_dom_map *entry, void *arg), 69 void *cb_arg); 70 71 #endif 72