release/src-rt-6.x.4708/linux/linux-2.6.36/net/netlabel/netlabel_cipso_v4.h

   1 /*
   2  * NetLabel CIPSO/IPv4 Support
   3  *
   4  * This file defines the CIPSO/IPv4 functions for the NetLabel system.  The
   5  * NetLabel system manages static and dynamic label mappings for network
   6  * protocols such as CIPSO and RIPSO.
   7  *
   8  * Author: Paul Moore <paul.moore@hp.com>
   9  *
  10  */
  11
  12 /*
  13  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
  14  *
  15  * This program is free software;  you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  23  * the GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program;  if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  28  *
  29  */
  30
  31 #ifndef _NETLABEL_CIPSO_V4
  32 #define _NETLABEL_CIPSO_V4
  33
  34 #include <net/netlabel.h>
  35
  36 /*
  37  * The following NetLabel payloads are supported by the CIPSO subsystem.
  38  *
  39  * o ADD:
  40  *   Sent by an application to add a new DOI mapping table.
  41  *
  42  *   Required attributes:
  43  *
  44  *     NLBL_CIPSOV4_A_DOI
  45  *     NLBL_CIPSOV4_A_MTYPE
  46  *     NLBL_CIPSOV4_A_TAGLST
  47  *
  48  *   If using CIPSO_V4_MAP_TRANS the following attributes are required:
  49  *
  50  *     NLBL_CIPSOV4_A_MLSLVLLST
  51  *     NLBL_CIPSOV4_A_MLSCATLST
  52  *
  53  *   If using CIPSO_V4_MAP_PASS or CIPSO_V4_MAP_LOCAL no additional attributes
  54  *   are required.
  55  *
  56  * o REMOVE:
  57  *   Sent by an application to remove a specific DOI mapping table from the
  58  *   CIPSO V4 system.
  59  *
  60  *   Required attributes:
  61  *
  62  *     NLBL_CIPSOV4_A_DOI
  63  *
  64  * o LIST:
  65  *   Sent by an application to list the details of a DOI definition.  On
  66  *   success the kernel should send a response using the following format.
  67  *
  68  *   Required attributes:
  69  *
  70  *     NLBL_CIPSOV4_A_DOI
  71  *
  72  *   The valid response message format depends on the type of the DOI mapping,
  73  *   the defined formats are shown below.
  74  *
  75  *   Required attributes:
  76  *
  77  *     NLBL_CIPSOV4_A_MTYPE
  78  *     NLBL_CIPSOV4_A_TAGLST
  79  *
  80  *   If using CIPSO_V4_MAP_TRANS the following attributes are required:
  81  *
  82  *     NLBL_CIPSOV4_A_MLSLVLLST
  83  *     NLBL_CIPSOV4_A_MLSCATLST
  84  *
  85  *   If using CIPSO_V4_MAP_PASS or CIPSO_V4_MAP_LOCAL no additional attributes
  86  *   are required.
  87  *
  88  * o LISTALL:
  89  *   This message is sent by an application to list the valid DOIs on the
  90  *   system.  When sent by an application there is no payload and the
  91  *   NLM_F_DUMP flag should be set.  The kernel should respond with a series of
  92  *   the following messages.
  93  *
  94  *   Required attributes:
  95  *
  96  *    NLBL_CIPSOV4_A_DOI
  97  *    NLBL_CIPSOV4_A_MTYPE
  98  *
  99  */
 100
 101 /* NetLabel CIPSOv4 commands */
 102 enum {
 103         NLBL_CIPSOV4_C_UNSPEC,
 104         NLBL_CIPSOV4_C_ADD,
 105         NLBL_CIPSOV4_C_REMOVE,
 106         NLBL_CIPSOV4_C_LIST,
 107         NLBL_CIPSOV4_C_LISTALL,
 108         __NLBL_CIPSOV4_C_MAX,
 109 };
 110 #define NLBL_CIPSOV4_C_MAX (__NLBL_CIPSOV4_C_MAX - 1)
 111
 112 /* NetLabel CIPSOv4 attributes */
 113 enum {
 114         NLBL_CIPSOV4_A_UNSPEC,
 115         NLBL_CIPSOV4_A_DOI,
 116         /* (NLA_U32)
 117          * the DOI value */
 118         NLBL_CIPSOV4_A_MTYPE,
 119         /* (NLA_U32)
 120          * the mapping table type (defined in the cipso_ipv4.h header as
 121          * CIPSO_V4_MAP_*) */
 122         NLBL_CIPSOV4_A_TAG,
 123         /* (NLA_U8)
 124          * a CIPSO tag type, meant to be used within a NLBL_CIPSOV4_A_TAGLST
 125          * attribute */
 126         NLBL_CIPSOV4_A_TAGLST,
 127         /* (NLA_NESTED)
 128          * the CIPSO tag list for the DOI, there must be at least one
 129          * NLBL_CIPSOV4_A_TAG attribute, tags listed first are given higher
 130          * priorirty when sending packets */
 131         NLBL_CIPSOV4_A_MLSLVLLOC,
 132         /* (NLA_U32)
 133          * the local MLS sensitivity level */
 134         NLBL_CIPSOV4_A_MLSLVLREM,
 135         /* (NLA_U32)
 136          * the remote MLS sensitivity level */
 137         NLBL_CIPSOV4_A_MLSLVL,
 138         /* (NLA_NESTED)
 139          * a MLS sensitivity level mapping, must contain only one attribute of
 140          * each of the following types: NLBL_CIPSOV4_A_MLSLVLLOC and
 141          * NLBL_CIPSOV4_A_MLSLVLREM */
 142         NLBL_CIPSOV4_A_MLSLVLLST,
 143         /* (NLA_NESTED)
 144          * the CIPSO level mappings, there must be at least one
 145          * NLBL_CIPSOV4_A_MLSLVL attribute */
 146         NLBL_CIPSOV4_A_MLSCATLOC,
 147         /* (NLA_U32)
 148          * the local MLS category */
 149         NLBL_CIPSOV4_A_MLSCATREM,
 150         /* (NLA_U32)
 151          * the remote MLS category */
 152         NLBL_CIPSOV4_A_MLSCAT,
 153         /* (NLA_NESTED)
 154          * a MLS category mapping, must contain only one attribute of each of
 155          * the following types: NLBL_CIPSOV4_A_MLSCATLOC and
 156          * NLBL_CIPSOV4_A_MLSCATREM */
 157         NLBL_CIPSOV4_A_MLSCATLST,
 158         /* (NLA_NESTED)
 159          * the CIPSO category mappings, there must be at least one
 160          * NLBL_CIPSOV4_A_MLSCAT attribute */
 161         __NLBL_CIPSOV4_A_MAX,
 162 };
 163 #define NLBL_CIPSOV4_A_MAX (__NLBL_CIPSOV4_A_MAX - 1)
 164
 165 /* NetLabel protocol functions */
 166 int netlbl_cipsov4_genl_init(void);
 167
 168 /* Free the memory associated with a CIPSOv4 DOI definition */
 169 void netlbl_cipsov4_doi_free(struct rcu_head *entry);
 170
 171 #endif