summaryrefslogtreecommitdiffstats
path: root/include/uapi/linux/tipc.h
blob: 80ea15e12113df5c5f0870832c45ebea3b26e53f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
 * include/uapi/linux/tipc.h: Header for TIPC socket interface
 *
 * Copyright (c) 2003-2006, 2015-2016 Ericsson AB
 * Copyright (c) 2005, 2010-2011, Wind River Systems
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _LINUX_TIPC_H_
#define _LINUX_TIPC_H_

#include <linux/types.h>
#include <linux/sockios.h>

/*
 * TIPC addressing primitives
 */

struct tipc_socket_addr {
	__u32 ref;
	__u32 node;
};

struct tipc_service_addr {
	__u32 type;
	__u32 instance;
};

struct tipc_service_range {
	__u32 type;
	__u32 lower;
	__u32 upper;
};

/*
 * Application-accessible service types
 */

#define TIPC_NODE_STATE		0	/* node state service type */
#define TIPC_TOP_SRV		1	/* topology server service type */
#define TIPC_LINK_STATE		2	/* link state service type */
#define TIPC_RESERVED_TYPES	64	/* lowest user-allowed service type */

/*
 * Publication scopes when binding service / service range
 */
enum tipc_scope {
	TIPC_CLUSTER_SCOPE = 2, /* 0 can also be used */
	TIPC_NODE_SCOPE    = 3
};

/*
 * Limiting values for messages
 */

#define TIPC_MAX_USER_MSG_SIZE	66000U

/*
 * Message importance levels
 */

#define TIPC_LOW_IMPORTANCE		0
#define TIPC_MEDIUM_IMPORTANCE		1
#define TIPC_HIGH_IMPORTANCE		2
#define TIPC_CRITICAL_IMPORTANCE	3

/*
 * Msg rejection/connection shutdown reasons
 */

#define TIPC_OK			0
#define TIPC_ERR_NO_NAME	1
#define TIPC_ERR_NO_PORT	2
#define TIPC_ERR_NO_NODE	3
#define TIPC_ERR_OVERLOAD	4
#define TIPC_CONN_SHUTDOWN	5

/*
 * TIPC topology subscription service definitions
 */

#define TIPC_SUB_PORTS          0x01    /* filter: evt at each match */
#define TIPC_SUB_SERVICE        0x02    /* filter: evt at first up/last down */
#define TIPC_SUB_CANCEL         0x04    /* filter: cancel a subscription */

#define TIPC_WAIT_FOREVER	(~0)	/* timeout for permanent subscription */

struct tipc_subscr {
	struct tipc_service_range seq;	/* range of interest */
	__u32 timeout;			/* subscription duration (in ms) */
	__u32 filter;			/* bitmask of filter options */
	char usr_handle[8];		/* available for subscriber use */
};

#define TIPC_PUBLISHED		1	/* publication event */
#define TIPC_WITHDRAWN		2	/* withdrawal event */
#define TIPC_SUBSCR_TIMEOUT	3	/* subscription timeout event */

struct tipc_event {
	__u32 event;			/* event type */
	__u32 found_lower;		/* matching range */
	__u32 found_upper;		/*    "      "    */
	struct tipc_socket_addr port;	/* associated socket */
	struct tipc_subscr s;		/* associated subscription */
};

/*
 * Socket API
 */

#ifndef AF_TIPC
#define AF_TIPC		30
#endif

#ifndef PF_TIPC
#define PF_TIPC		AF_TIPC
#endif

#ifndef SOL_TIPC
#define SOL_TIPC	271
#endif

#define TIPC_ADDR_MCAST         1
#define TIPC_SERVICE_RANGE      1
#define TIPC_SERVICE_ADDR       2
#define TIPC_SOCKET_ADDR        3

struct sockaddr_tipc {
	unsigned short family;
	unsigned char  addrtype;
	signed   char  scope;
	union {
		struct tipc_socket_addr id;
		struct tipc_service_range nameseq;
		struct {
			struct tipc_service_addr name;
			__u32 domain;
		} name;
	} addr;
};

/*
 * Ancillary data objects supported by recvmsg()
 */

#define TIPC_ERRINFO	1	/* error info */
#define TIPC_RETDATA	2	/* returned data */
#define TIPC_DESTNAME	3	/* destination name */

/*
 * TIPC-specific socket option names
 */

#define TIPC_IMPORTANCE		127	/* Default: TIPC_LOW_IMPORTANCE */
#define TIPC_SRC_DROPPABLE	128	/* Default: based on socket type */
#define TIPC_DEST_DROPPABLE	129	/* Default: based on socket type */
#define TIPC_CONN_TIMEOUT	130	/* Default: 8000 (ms)  */
#define TIPC_NODE_RECVQ_DEPTH	131	/* Default: none (read only) */
#define TIPC_SOCK_RECVQ_DEPTH	132	/* Default: none (read only) */
#define TIPC_MCAST_BROADCAST    133     /* Default: TIPC selects. No arg */
#define TIPC_MCAST_REPLICAST    134     /* Default: TIPC selects. No arg */
#define TIPC_GROUP_JOIN         135     /* Takes struct tipc_group_req* */
#define TIPC_GROUP_LEAVE        136     /* No argument */
#define TIPC_SOCK_RECVQ_USED    137     /* Default: none (read only) */
#define TIPC_NODELAY            138     /* Default: false */

/*
 * Flag values
 */
#define TIPC_GROUP_LOOPBACK     0x1  /* Receive copy of sent msg when match */
#define TIPC_GROUP_MEMBER_EVTS  0x2  /* Receive membership events in socket */

struct tipc_group_req {
	__u32 type;      /* group id */
	__u32 instance;  /* member id */
	__u32 scope;     /* cluster/node */
	__u32 flags;
};

/*
 * Maximum sizes of TIPC bearer-related names (including terminating NULL)
 * The string formatting for each name element is:
 * media: media
 * interface: media:interface name
 * link: node:interface-node:interface
 */
#define TIPC_NODEID_LEN         16
#define TIPC_MAX_MEDIA_NAME	16
#define TIPC_MAX_IF_NAME	16
#define TIPC_MAX_BEARER_NAME	32
#define TIPC_MAX_LINK_NAME	68

#define SIOCGETLINKNAME        SIOCPROTOPRIVATE
#define SIOCGETNODEID          (SIOCPROTOPRIVATE + 1)

struct tipc_sioc_ln_req {
	__u32 peer;
	__u32 bearer_id;
	char linkname[TIPC_MAX_LINK_NAME];
};

struct tipc_sioc_nodeid_req {
	__u32 peer;
	char node_id[TIPC_NODEID_LEN];
};

/*
 * TIPC Crypto, AEAD
 */
#define TIPC_AEAD_ALG_NAME		(32)

struct tipc_aead_key {
	char alg_name[TIPC_AEAD_ALG_NAME];
	unsigned int keylen;	/* in bytes */
	char key[];
};

#define TIPC_AEAD_KEYLEN_MIN		(16 + 4)
#define TIPC_AEAD_KEYLEN_MAX		(32 + 4)
#define TIPC_AEAD_KEY_SIZE_MAX		(sizeof(struct tipc_aead_key) + \
							TIPC_AEAD_KEYLEN_MAX)

static inline int tipc_aead_key_size(struct tipc_aead_key *key)
{
	return sizeof(*key) + key->keylen;
}

#define TIPC_REKEYING_NOW		(~0U)

/* The macros and functions below are deprecated:
 */

#define TIPC_CFG_SRV		0
#define TIPC_ZONE_SCOPE         1

#define TIPC_ADDR_NAMESEQ	1
#define TIPC_ADDR_NAME		2
#define TIPC_ADDR_ID		3

#define TIPC_NODE_BITS          12
#define TIPC_CLUSTER_BITS       12
#define TIPC_ZONE_BITS          8

#define TIPC_NODE_OFFSET        0
#define TIPC_CLUSTER_OFFSET     TIPC_NODE_BITS
#define TIPC_ZONE_OFFSET        (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)

#define TIPC_NODE_SIZE          ((1UL << TIPC_NODE_BITS) - 1)
#define TIPC_CLUSTER_SIZE       ((1UL << TIPC_CLUSTER_BITS) - 1)
#define TIPC_ZONE_SIZE          ((1UL << TIPC_ZONE_BITS) - 1)

#define TIPC_NODE_MASK		(TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
#define TIPC_CLUSTER_MASK	(TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
#define TIPC_ZONE_MASK		(TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)

#define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)

#define tipc_portid tipc_socket_addr
#define tipc_name tipc_service_addr
#define tipc_name_seq tipc_service_range

static inline __u32 tipc_addr(unsigned int zone,
			      unsigned int cluster,
			      unsigned int node)
{
	return (zone << TIPC_ZONE_OFFSET) |
		(cluster << TIPC_CLUSTER_OFFSET) |
		node;
}

static inline unsigned int tipc_zone(__u32 addr)
{
	return addr >> TIPC_ZONE_OFFSET;
}

static inline unsigned int tipc_cluster(__u32 addr)
{
	return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
}

static inline unsigned int tipc_node(__u32 addr)
{
	return addr & TIPC_NODE_MASK;
}

#endif