xref: /openbmc/linux/net/netlabel/netlabel_mgmt.h (revision 7f877908) 
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * NetLabel Management Support
4  *
5  * This file defines the management functions for the NetLabel system.  The
6  * NetLabel system manages static and dynamic label mappings for network
7  * protocols such as CIPSO and RIPSO.
8  *
9  * Author: Paul Moore <paul@paul-moore.com>
10  */
11 
12 /*
13  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
14  */
15 
16 #ifndef _NETLABEL_MGMT_H
17 #define _NETLABEL_MGMT_H
18 
19 #include <net/netlabel.h>
20 #include <linux/atomic.h>
21 
22 /*
23  * The following NetLabel payloads are supported by the management interface.
24  *
25  * o ADD:
26  *   Sent by an application to add a domain mapping to the NetLabel system.
27  *
28  *   Required attributes:
29  *
30  *     NLBL_MGMT_A_DOMAIN
31  *     NLBL_MGMT_A_PROTOCOL
32  *
33  *   If IPv4 is specified the following attributes are required:
34  *
35  *     NLBL_MGMT_A_IPV4ADDR
36  *     NLBL_MGMT_A_IPV4MASK
37  *
38  *   If IPv6 is specified the following attributes are required:
39  *
40  *     NLBL_MGMT_A_IPV6ADDR
41  *     NLBL_MGMT_A_IPV6MASK
42  *
43  *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
44  *
45  *     NLBL_MGMT_A_CV4DOI
46  *
47  *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required,
48  *   however the following attribute may optionally be sent:
49  *
50  *     NLBL_MGMT_A_FAMILY
51  *
52  * o REMOVE:
53  *   Sent by an application to remove a domain mapping from the NetLabel
54  *   system.
55  *
56  *   Required attributes:
57  *
58  *     NLBL_MGMT_A_DOMAIN
59  *
60  * o LISTALL:
61  *   This message can be sent either from an application or by the kernel in
62  *   response to an application generated LISTALL message.  When sent by an
63  *   application there is no payload and the NLM_F_DUMP flag should be set.
64  *   The kernel should respond with a series of the following messages.
65  *
66  *   Required attributes:
67  *
68  *     NLBL_MGMT_A_DOMAIN
69  *     NLBL_MGMT_A_FAMILY
70  *
71  *   If the IP address selectors are not used the following attribute is
72  *   required:
73  *
74  *     NLBL_MGMT_A_PROTOCOL
75  *
76  *   If the IP address selectors are used then the following attritbute is
77  *   required:
78  *
79  *     NLBL_MGMT_A_SELECTORLIST
80  *
81  *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
82  *   attributes are required:
83  *
84  *     NLBL_MGMT_A_CV4DOI
85  *
86  *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
87  *   attributes are required.
88  *
89  * o ADDDEF:
90  *   Sent by an application to set the default domain mapping for the NetLabel
91  *   system.
92  *
93  *   Required attributes:
94  *
95  *     NLBL_MGMT_A_PROTOCOL
96  *
97  *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
98  *
99  *     NLBL_MGMT_A_CV4DOI
100  *
101  *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required,
102  *   however the following attribute may optionally be sent:
103  *
104  *     NLBL_MGMT_A_FAMILY
105  *
106  * o REMOVEDEF:
107  *   Sent by an application to remove the default domain mapping from the
108  *   NetLabel system, there is no payload.
109  *
110  * o LISTDEF:
111  *   This message can be sent either from an application or by the kernel in
112  *   response to an application generated LISTDEF message.  When sent by an
113  *   application there may be an optional payload.
114  *
115  *     NLBL_MGMT_A_FAMILY
116  *
117  *   On success the kernel should send a response using the following format:
118  *
119  *   If the IP address selectors are not used the following attributes are
120  *   required:
121  *
122  *     NLBL_MGMT_A_PROTOCOL
123  *     NLBL_MGMT_A_FAMILY
124  *
125  *   If the IP address selectors are used then the following attritbute is
126  *   required:
127  *
128  *     NLBL_MGMT_A_SELECTORLIST
129  *
130  *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
131  *   attributes are required:
132  *
133  *     NLBL_MGMT_A_CV4DOI
134  *
135  *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
136  *   attributes are required.
137  *
138  * o PROTOCOLS:
139  *   Sent by an application to request a list of configured NetLabel protocols
140  *   in the kernel.  When sent by an application there is no payload and the
141  *   NLM_F_DUMP flag should be set.  The kernel should respond with a series of
142  *   the following messages.
143  *
144  *   Required attributes:
145  *
146  *     NLBL_MGMT_A_PROTOCOL
147  *
148  * o VERSION:
149  *   Sent by an application to request the NetLabel version.  When sent by an
150  *   application there is no payload.  This message type is also used by the
151  *   kernel to respond to an VERSION request.
152  *
153  *   Required attributes:
154  *
155  *     NLBL_MGMT_A_VERSION
156  *
157  */
158 
159 /* NetLabel Management commands */
160 enum {
161 	NLBL_MGMT_C_UNSPEC,
162 	NLBL_MGMT_C_ADD,
163 	NLBL_MGMT_C_REMOVE,
164 	NLBL_MGMT_C_LISTALL,
165 	NLBL_MGMT_C_ADDDEF,
166 	NLBL_MGMT_C_REMOVEDEF,
167 	NLBL_MGMT_C_LISTDEF,
168 	NLBL_MGMT_C_PROTOCOLS,
169 	NLBL_MGMT_C_VERSION,
170 	__NLBL_MGMT_C_MAX,
171 };
172 
173 /* NetLabel Management attributes */
174 enum {
175 	NLBL_MGMT_A_UNSPEC,
176 	NLBL_MGMT_A_DOMAIN,
177 	/* (NLA_NUL_STRING)
178 	 * the NULL terminated LSM domain string */
179 	NLBL_MGMT_A_PROTOCOL,
180 	/* (NLA_U32)
181 	 * the NetLabel protocol type (defined by NETLBL_NLTYPE_*) */
182 	NLBL_MGMT_A_VERSION,
183 	/* (NLA_U32)
184 	 * the NetLabel protocol version number (defined by
185 	 * NETLBL_PROTO_VERSION) */
186 	NLBL_MGMT_A_CV4DOI,
187 	/* (NLA_U32)
188 	 * the CIPSOv4 DOI value */
189 	NLBL_MGMT_A_IPV6ADDR,
190 	/* (NLA_BINARY, struct in6_addr)
191 	 * an IPv6 address */
192 	NLBL_MGMT_A_IPV6MASK,
193 	/* (NLA_BINARY, struct in6_addr)
194 	 * an IPv6 address mask */
195 	NLBL_MGMT_A_IPV4ADDR,
196 	/* (NLA_BINARY, struct in_addr)
197 	 * an IPv4 address */
198 	NLBL_MGMT_A_IPV4MASK,
199 	/* (NLA_BINARY, struct in_addr)
200 	 * and IPv4 address mask */
201 	NLBL_MGMT_A_ADDRSELECTOR,
202 	/* (NLA_NESTED)
203 	 * an IP address selector, must contain an address, mask, and protocol
204 	 * attribute plus any protocol specific attributes */
205 	NLBL_MGMT_A_SELECTORLIST,
206 	/* (NLA_NESTED)
207 	 * the selector list, there must be at least one
208 	 * NLBL_MGMT_A_ADDRSELECTOR attribute */
209 	NLBL_MGMT_A_FAMILY,
210 	/* (NLA_U16)
211 	 * The address family */
212 	NLBL_MGMT_A_CLPDOI,
213 	/* (NLA_U32)
214 	 * the CALIPSO DOI value */
215 	__NLBL_MGMT_A_MAX,
216 };
217 #define NLBL_MGMT_A_MAX (__NLBL_MGMT_A_MAX - 1)
218 
219 /* NetLabel protocol functions */
220 int netlbl_mgmt_genl_init(void);
221 
222 /* NetLabel configured protocol reference counter */
223 extern atomic_t netlabel_mgmt_protocount;
224 
225 #endif
226