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