LXR linux/net/netlabel/netlabel

   1/*
   2 * NetLabel Management Support
   3 *
   4 * This file defines the management 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, write to the Free Software
  27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  28 *
  29 */
  30
  31#ifndef _NETLABEL_MGMT_H
  32#define _NETLABEL_MGMT_H
  33
  34#include <net/netlabel.h>
  35#include <linux/atomic.h>
  36
  37/*
  38 * The following NetLabel payloads are supported by the management interface.
  39 *
  40 * o ADD:
  41 *   Sent by an application to add a domain mapping to the NetLabel system.
  42 *
  43 *   Required attributes:
  44 *
  45 *     NLBL_MGMT_A_DOMAIN
  46 *     NLBL_MGMT_A_PROTOCOL
  47 *
  48 *   If IPv4 is specified the following attributes are required:
  49 *
  50 *     NLBL_MGMT_A_IPV4ADDR
  51 *     NLBL_MGMT_A_IPV4MASK
  52 *
  53 *   If IPv6 is specified the following attributes are required:
  54 *
  55 *     NLBL_MGMT_A_IPV6ADDR
  56 *     NLBL_MGMT_A_IPV6MASK
  57 *
  58 *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
  59 *
  60 *     NLBL_MGMT_A_CV4DOI
  61 *
  62 *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
  63 *
  64 * o REMOVE:
  65 *   Sent by an application to remove a domain mapping from the NetLabel
  66 *   system.
  67 *
  68 *   Required attributes:
  69 *
  70 *     NLBL_MGMT_A_DOMAIN
  71 *
  72 * o LISTALL:
  73 *   This message can be sent either from an application or by the kernel in
  74 *   response to an application generated LISTALL message.  When sent by an
  75 *   application there is no payload and the NLM_F_DUMP flag should be set.
  76 *   The kernel should respond with a series of the following messages.
  77 *
  78 *   Required attributes:
  79 *
  80 *     NLBL_MGMT_A_DOMAIN
  81 *
  82 *   If the IP address selectors are not used the following attribute is
  83 *   required:
  84 *
  85 *     NLBL_MGMT_A_PROTOCOL
  86 *
  87 *   If the IP address selectors are used then the following attritbute is
  88 *   required:
  89 *
  90 *     NLBL_MGMT_A_SELECTORLIST
  91 *
  92 *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
  93 *   attributes are required:
  94 *
  95 *     NLBL_MGMT_A_CV4DOI
  96 *
  97 *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
  98 *   attributes are required.
  99 *
 100 * o ADDDEF:
 101 *   Sent by an application to set the default domain mapping for the NetLabel
 102 *   system.
 103 *
 104 *   Required attributes:
 105 *
 106 *     NLBL_MGMT_A_PROTOCOL
 107 *
 108 *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
 109 *
 110 *     NLBL_MGMT_A_CV4DOI
 111 *
 112 *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
 113 *
 114 * o REMOVEDEF:
 115 *   Sent by an application to remove the default domain mapping from the
 116 *   NetLabel system, there is no payload.
 117 *
 118 * o LISTDEF:
 119 *   This message can be sent either from an application or by the kernel in
 120 *   response to an application generated LISTDEF message.  When sent by an
 121 *   application there is no payload.  On success the kernel should send a
 122 *   response using the following format.
 123 *
 124 *   If the IP address selectors are not used the following attribute is
 125 *   required:
 126 *
 127 *     NLBL_MGMT_A_PROTOCOL
 128 *
 129 *   If the IP address selectors are used then the following attritbute is
 130 *   required:
 131 *
 132 *     NLBL_MGMT_A_SELECTORLIST
 133 *
 134 *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
 135 *   attributes are required:
 136 *
 137 *     NLBL_MGMT_A_CV4DOI
 138 *
 139 *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
 140 *   attributes are required.
 141 *
 142 * o PROTOCOLS:
 143 *   Sent by an application to request a list of configured NetLabel protocols
 144 *   in the kernel.  When sent by an application there is no payload and the
 145 *   NLM_F_DUMP flag should be set.  The kernel should respond with a series of
 146 *   the following messages.
 147 *
 148 *   Required attributes:
 149 *
 150 *     NLBL_MGMT_A_PROTOCOL
 151 *
 152 * o VERSION:
 153 *   Sent by an application to request the NetLabel version.  When sent by an
 154 *   application there is no payload.  This message type is also used by the
 155 *   kernel to respond to an VERSION request.
 156 *
 157 *   Required attributes:
 158 *
 159 *     NLBL_MGMT_A_VERSION
 160 *
 161 */
 162
 163/* NetLabel Management commands */
 164enum {
 165        NLBL_MGMT_C_UNSPEC,
 166        NLBL_MGMT_C_ADD,
 167        NLBL_MGMT_C_REMOVE,
 168        NLBL_MGMT_C_LISTALL,
 169        NLBL_MGMT_C_ADDDEF,
 170        NLBL_MGMT_C_REMOVEDEF,
 171        NLBL_MGMT_C_LISTDEF,
 172        NLBL_MGMT_C_PROTOCOLS,
 173        NLBL_MGMT_C_VERSION,
 174        __NLBL_MGMT_C_MAX,
 175};
 176
 177/* NetLabel Management attributes */
 178enum {
 179        NLBL_MGMT_A_UNSPEC,
 180        NLBL_MGMT_A_DOMAIN,
 181        /* (NLA_NUL_STRING)
 182         * the NULL terminated LSM domain string */
 183        NLBL_MGMT_A_PROTOCOL,
 184        /* (NLA_U32)
 185         * the NetLabel protocol type (defined by NETLBL_NLTYPE_*) */
 186        NLBL_MGMT_A_VERSION,
 187        /* (NLA_U32)
 188         * the NetLabel protocol version number (defined by
 189         * NETLBL_PROTO_VERSION) */
 190        NLBL_MGMT_A_CV4DOI,
 191        /* (NLA_U32)
 192         * the CIPSOv4 DOI value */
 193        NLBL_MGMT_A_IPV6ADDR,
 194        /* (NLA_BINARY, struct in6_addr)
 195         * an IPv6 address */
 196        NLBL_MGMT_A_IPV6MASK,
 197        /* (NLA_BINARY, struct in6_addr)
 198         * an IPv6 address mask */
 199        NLBL_MGMT_A_IPV4ADDR,
 200        /* (NLA_BINARY, struct in_addr)
 201         * an IPv4 address */
 202        NLBL_MGMT_A_IPV4MASK,
 203        /* (NLA_BINARY, struct in_addr)
 204         * and IPv4 address mask */
 205        NLBL_MGMT_A_ADDRSELECTOR,
 206        /* (NLA_NESTED)
 207         * an IP address selector, must contain an address, mask, and protocol
 208         * attribute plus any protocol specific attributes */
 209        NLBL_MGMT_A_SELECTORLIST,
 210        /* (NLA_NESTED)
 211         * the selector list, there must be at least one
 212         * NLBL_MGMT_A_ADDRSELECTOR attribute */
 213        __NLBL_MGMT_A_MAX,
 214};
 215#define NLBL_MGMT_A_MAX (__NLBL_MGMT_A_MAX - 1)
 216
 217/* NetLabel protocol functions */
 218int netlbl_mgmt_genl_init(void);
 219
 220/* NetLabel configured protocol reference counter */
 221extern atomic_t netlabel_mgmt_protocount;
 222
 223#endif
 224