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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.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_MGMT_H
32#define _NETLABEL_MGMT_H
33
34#include <net/netlabel.h>
35#include <asm/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#define NLBL_MGMT_C_MAX (__NLBL_MGMT_C_MAX - 1)
177
178/* NetLabel Management attributes */
179enum {
180	NLBL_MGMT_A_UNSPEC,
181	NLBL_MGMT_A_DOMAIN,
182	/* (NLA_NUL_STRING)
183	 * the NULL terminated LSM domain string */
184	NLBL_MGMT_A_PROTOCOL,
185	/* (NLA_U32)
186	 * the NetLabel protocol type (defined by NETLBL_NLTYPE_*) */
187	NLBL_MGMT_A_VERSION,
188	/* (NLA_U32)
189	 * the NetLabel protocol version number (defined by
190	 * NETLBL_PROTO_VERSION) */
191	NLBL_MGMT_A_CV4DOI,
192	/* (NLA_U32)
193	 * the CIPSOv4 DOI value */
194	NLBL_MGMT_A_IPV6ADDR,
195	/* (NLA_BINARY, struct in6_addr)
196	 * an IPv6 address */
197	NLBL_MGMT_A_IPV6MASK,
198	/* (NLA_BINARY, struct in6_addr)
199	 * an IPv6 address mask */
200	NLBL_MGMT_A_IPV4ADDR,
201	/* (NLA_BINARY, struct in_addr)
202	 * an IPv4 address */
203	NLBL_MGMT_A_IPV4MASK,
204	/* (NLA_BINARY, struct in_addr)
205	 * and IPv4 address mask */
206	NLBL_MGMT_A_ADDRSELECTOR,
207	/* (NLA_NESTED)
208	 * an IP address selector, must contain an address, mask, and protocol
209	 * attribute plus any protocol specific attributes */
210	NLBL_MGMT_A_SELECTORLIST,
211	/* (NLA_NESTED)
212	 * the selector list, there must be at least one
213	 * NLBL_MGMT_A_ADDRSELECTOR attribute */
214	__NLBL_MGMT_A_MAX,
215};
216#define NLBL_MGMT_A_MAX (__NLBL_MGMT_A_MAX - 1)
217
218/* NetLabel protocol functions */
219int netlbl_mgmt_genl_init(void);
220
221/* NetLabel configured protocol reference counter */
222extern atomic_t netlabel_mgmt_protocount;
223
224#endif
225