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@paul-moore.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, see <http://www.gnu.org/licenses/>.
  27  *
  28  */
  29
  30 #ifndef _NETLABEL_CIPSO_V4
  31 #define _NETLABEL_CIPSO_V4
  32
  33 #include <net/netlabel.h>
  34
  35 /*
  36  * The following NetLabel payloads are supported by the CIPSO subsystem.
  37  *
  38  * o ADD:
  39  *   Sent by an application to add a new DOI mapping table.
  40  *
  41  *   Required attributes:
  42  *
  43  *     NLBL_CIPSOV4_A_DOI
  44  *     NLBL_CIPSOV4_A_MTYPE
  45  *     NLBL_CIPSOV4_A_TAGLST
  46  *
  47  *   If using CIPSO_V4_MAP_TRANS the following attributes are required:
  48  *
  49  *     NLBL_CIPSOV4_A_MLSLVLLST
  50  *     NLBL_CIPSOV4_A_MLSCATLST
  51  *
  52  *   If using CIPSO_V4_MAP_PASS or CIPSO_V4_MAP_LOCAL no additional attributes
  53  *   are required.
  54  *
  55  * o REMOVE:
  56  *   Sent by an application to remove a specific DOI mapping table from the
  57  *   CIPSO V4 system.
  58  *
  59  *   Required attributes:
  60  *
  61  *     NLBL_CIPSOV4_A_DOI
  62  *
  63  * o LIST:
  64  *   Sent by an application to list the details of a DOI definition.  On
  65  *   success the kernel should send a response using the following format.
  66  *
  67  *   Required attributes:
  68  *
  69  *     NLBL_CIPSOV4_A_DOI
  70  *
  71  *   The valid response message format depends on the type of the DOI mapping,
  72  *   the defined formats are shown below.
  73  *
  74  *   Required attributes:
  75  *
  76  *     NLBL_CIPSOV4_A_MTYPE
  77  *     NLBL_CIPSOV4_A_TAGLST
  78  *
  79  *   If using CIPSO_V4_MAP_TRANS the following attributes are required:
  80  *
  81  *     NLBL_CIPSOV4_A_MLSLVLLST
  82  *     NLBL_CIPSOV4_A_MLSCATLST
  83  *
  84  *   If using CIPSO_V4_MAP_PASS or CIPSO_V4_MAP_LOCAL no additional attributes
  85  *   are required.
  86  *
  87  * o LISTALL:
  88  *   This message is sent by an application to list the valid DOIs on the
  89  *   system.  When sent by an application there is no payload and the
  90  *   NLM_F_DUMP flag should be set.  The kernel should respond with a series of
  91  *   the following messages.
  92  *
  93  *   Required attributes:
  94  *
  95  *    NLBL_CIPSOV4_A_DOI
  96  *    NLBL_CIPSOV4_A_MTYPE
  97  *
  98  */
  99
 100 /* NetLabel CIPSOv4 commands */
 101 enum {
 102         NLBL_CIPSOV4_C_UNSPEC,
 103         NLBL_CIPSOV4_C_ADD,
 104         NLBL_CIPSOV4_C_REMOVE,
 105         NLBL_CIPSOV4_C_LIST,
 106         NLBL_CIPSOV4_C_LISTALL,
 107         __NLBL_CIPSOV4_C_MAX,
 108 };
 109
 110 /* NetLabel CIPSOv4 attributes */
 111 enum {
 112         NLBL_CIPSOV4_A_UNSPEC,
 113         NLBL_CIPSOV4_A_DOI,
 114         /* (NLA_U32)
 115          * the DOI value */
 116         NLBL_CIPSOV4_A_MTYPE,
 117         /* (NLA_U32)
 118          * the mapping table type (defined in the cipso_ipv4.h header as
 119          * CIPSO_V4_MAP_*) */
 120         NLBL_CIPSOV4_A_TAG,
 121         /* (NLA_U8)
 122          * a CIPSO tag type, meant to be used within a NLBL_CIPSOV4_A_TAGLST
 123          * attribute */
 124         NLBL_CIPSOV4_A_TAGLST,
 125         /* (NLA_NESTED)
 126          * the CIPSO tag list for the DOI, there must be at least one
 127          * NLBL_CIPSOV4_A_TAG attribute, tags listed first are given higher
 128          * priorirty when sending packets */
 129         NLBL_CIPSOV4_A_MLSLVLLOC,
 130         /* (NLA_U32)
 131          * the local MLS sensitivity level */
 132         NLBL_CIPSOV4_A_MLSLVLREM,
 133         /* (NLA_U32)
 134          * the remote MLS sensitivity level */
 135         NLBL_CIPSOV4_A_MLSLVL,
 136         /* (NLA_NESTED)
 137          * a MLS sensitivity level mapping, must contain only one attribute of
 138          * each of the following types: NLBL_CIPSOV4_A_MLSLVLLOC and
 139          * NLBL_CIPSOV4_A_MLSLVLREM */
 140         NLBL_CIPSOV4_A_MLSLVLLST,
 141         /* (NLA_NESTED)
 142          * the CIPSO level mappings, there must be at least one
 143          * NLBL_CIPSOV4_A_MLSLVL attribute */
 144         NLBL_CIPSOV4_A_MLSCATLOC,
 145         /* (NLA_U32)
 146          * the local MLS category */
 147         NLBL_CIPSOV4_A_MLSCATREM,
 148         /* (NLA_U32)
 149          * the remote MLS category */
 150         NLBL_CIPSOV4_A_MLSCAT,
 151         /* (NLA_NESTED)
 152          * a MLS category mapping, must contain only one attribute of each of
 153          * the following types: NLBL_CIPSOV4_A_MLSCATLOC and
 154          * NLBL_CIPSOV4_A_MLSCATREM */
 155         NLBL_CIPSOV4_A_MLSCATLST,
 156         /* (NLA_NESTED)
 157          * the CIPSO category mappings, there must be at least one
 158          * NLBL_CIPSOV4_A_MLSCAT attribute */
 159         __NLBL_CIPSOV4_A_MAX,
 160 };
 161 #define NLBL_CIPSOV4_A_MAX (__NLBL_CIPSOV4_A_MAX - 1)
 162
 163 /* NetLabel protocol functions */
 164 int netlbl_cipsov4_genl_init(void);
 165
 166 /* Free the memory associated with a CIPSOv4 DOI definition */
 167 void netlbl_cipsov4_doi_free(struct rcu_head *entry);
 168
 169 #endif