1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
2 /*
3  * include/uapi/linux/tipc.h: Header for TIPC socket interface
4  *
5  * Copyright (c) 2003-2006, 2015-2016 Ericsson AB
6  * Copyright (c) 2005, 2010-2011, Wind River Systems
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. Neither the names of the copyright holders nor the names of its
18  *    contributors may be used to endorse or promote products derived from
19  *    this software without specific prior written permission.
20  *
21  * Alternatively, this software may be distributed under the terms of the
22  * GNU General Public License ("GPL") version 2 as published by the Free
23  * Software Foundation.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35  * POSSIBILITY OF SUCH DAMAGE.
36  */
37 
38 #ifndef _LINUX_TIPC_H_
39 #define _LINUX_TIPC_H_
40 
41 #include <linux/types.h>
42 #include <linux/sockios.h>
43 
44 /*
45  * TIPC addressing primitives
46  */
47 
48 struct tipc_socket_addr {
49 	__u32 ref;
50 	__u32 node;
51 };
52 
53 struct tipc_service_addr {
54 	__u32 type;
55 	__u32 instance;
56 };
57 
58 struct tipc_service_range {
59 	__u32 type;
60 	__u32 lower;
61 	__u32 upper;
62 };
63 
64 /*
65  * Application-accessible service types
66  */
67 
68 #define TIPC_NODE_STATE		0	/* node state service type */
69 #define TIPC_TOP_SRV		1	/* topology server service type */
70 #define TIPC_LINK_STATE		2	/* link state service type */
71 #define TIPC_RESERVED_TYPES	64	/* lowest user-allowed service type */
72 
73 /*
74  * Publication scopes when binding service / service range
75  */
76 enum tipc_scope {
77 	TIPC_CLUSTER_SCOPE = 2, /* 0 can also be used */
78 	TIPC_NODE_SCOPE    = 3
79 };
80 
81 /*
82  * Limiting values for messages
83  */
84 
85 #define TIPC_MAX_USER_MSG_SIZE	66000U
86 
87 /*
88  * Message importance levels
89  */
90 
91 #define TIPC_LOW_IMPORTANCE		0
92 #define TIPC_MEDIUM_IMPORTANCE		1
93 #define TIPC_HIGH_IMPORTANCE		2
94 #define TIPC_CRITICAL_IMPORTANCE	3
95 
96 /*
97  * Msg rejection/connection shutdown reasons
98  */
99 
100 #define TIPC_OK			0
101 #define TIPC_ERR_NO_NAME	1
102 #define TIPC_ERR_NO_PORT	2
103 #define TIPC_ERR_NO_NODE	3
104 #define TIPC_ERR_OVERLOAD	4
105 #define TIPC_CONN_SHUTDOWN	5
106 
107 /*
108  * TIPC topology subscription service definitions
109  */
110 
111 #define TIPC_SUB_PORTS          0x01    /* filter: evt at each match */
112 #define TIPC_SUB_SERVICE        0x02    /* filter: evt at first up/last down */
113 #define TIPC_SUB_CANCEL         0x04    /* filter: cancel a subscription */
114 
115 #define TIPC_WAIT_FOREVER	(~0)	/* timeout for permanent subscription */
116 
117 struct tipc_subscr {
118 	struct tipc_service_range seq;	/* range of interest */
119 	__u32 timeout;			/* subscription duration (in ms) */
120 	__u32 filter;			/* bitmask of filter options */
121 	char usr_handle[8];		/* available for subscriber use */
122 };
123 
124 #define TIPC_PUBLISHED		1	/* publication event */
125 #define TIPC_WITHDRAWN		2	/* withdrawal event */
126 #define TIPC_SUBSCR_TIMEOUT	3	/* subscription timeout event */
127 
128 struct tipc_event {
129 	__u32 event;			/* event type */
130 	__u32 found_lower;		/* matching range */
131 	__u32 found_upper;		/*    "      "    */
132 	struct tipc_socket_addr port;	/* associated socket */
133 	struct tipc_subscr s;		/* associated subscription */
134 };
135 
136 /*
137  * Socket API
138  */
139 
140 #ifndef AF_TIPC
141 #define AF_TIPC		30
142 #endif
143 
144 #ifndef PF_TIPC
145 #define PF_TIPC		AF_TIPC
146 #endif
147 
148 #ifndef SOL_TIPC
149 #define SOL_TIPC	271
150 #endif
151 
152 #define TIPC_ADDR_MCAST         1
153 #define TIPC_SERVICE_RANGE      1
154 #define TIPC_SERVICE_ADDR       2
155 #define TIPC_SOCKET_ADDR        3
156 
157 struct sockaddr_tipc {
158 	unsigned short family;
159 	unsigned char  addrtype;
160 	signed   char  scope;
161 	union {
162 		struct tipc_socket_addr id;
163 		struct tipc_service_range nameseq;
164 		struct {
165 			struct tipc_service_addr name;
166 			__u32 domain;
167 		} name;
168 	} addr;
169 };
170 
171 /*
172  * Ancillary data objects supported by recvmsg()
173  */
174 
175 #define TIPC_ERRINFO	1	/* error info */
176 #define TIPC_RETDATA	2	/* returned data */
177 #define TIPC_DESTNAME	3	/* destination name */
178 
179 /*
180  * TIPC-specific socket option names
181  */
182 
183 #define TIPC_IMPORTANCE		127	/* Default: TIPC_LOW_IMPORTANCE */
184 #define TIPC_SRC_DROPPABLE	128	/* Default: based on socket type */
185 #define TIPC_DEST_DROPPABLE	129	/* Default: based on socket type */
186 #define TIPC_CONN_TIMEOUT	130	/* Default: 8000 (ms)  */
187 #define TIPC_NODE_RECVQ_DEPTH	131	/* Default: none (read only) */
188 #define TIPC_SOCK_RECVQ_DEPTH	132	/* Default: none (read only) */
189 #define TIPC_MCAST_BROADCAST    133     /* Default: TIPC selects. No arg */
190 #define TIPC_MCAST_REPLICAST    134     /* Default: TIPC selects. No arg */
191 #define TIPC_GROUP_JOIN         135     /* Takes struct tipc_group_req* */
192 #define TIPC_GROUP_LEAVE        136     /* No argument */
193 #define TIPC_SOCK_RECVQ_USED    137     /* Default: none (read only) */
194 #define TIPC_NODELAY            138     /* Default: false */
195 
196 /*
197  * Flag values
198  */
199 #define TIPC_GROUP_LOOPBACK     0x1  /* Receive copy of sent msg when match */
200 #define TIPC_GROUP_MEMBER_EVTS  0x2  /* Receive membership events in socket */
201 
202 struct tipc_group_req {
203 	__u32 type;      /* group id */
204 	__u32 instance;  /* member id */
205 	__u32 scope;     /* cluster/node */
206 	__u32 flags;
207 };
208 
209 /*
210  * Maximum sizes of TIPC bearer-related names (including terminating NULL)
211  * The string formatting for each name element is:
212  * media: media
213  * interface: media:interface name
214  * link: node:interface-node:interface
215  */
216 #define TIPC_NODEID_LEN         16
217 #define TIPC_MAX_MEDIA_NAME	16
218 #define TIPC_MAX_IF_NAME	16
219 #define TIPC_MAX_BEARER_NAME	32
220 #define TIPC_MAX_LINK_NAME	68
221 
222 #define SIOCGETLINKNAME        SIOCPROTOPRIVATE
223 #define SIOCGETNODEID          (SIOCPROTOPRIVATE + 1)
224 
225 struct tipc_sioc_ln_req {
226 	__u32 peer;
227 	__u32 bearer_id;
228 	char linkname[TIPC_MAX_LINK_NAME];
229 };
230 
231 struct tipc_sioc_nodeid_req {
232 	__u32 peer;
233 	char node_id[TIPC_NODEID_LEN];
234 };
235 
236 /*
237  * TIPC Crypto, AEAD
238  */
239 #define TIPC_AEAD_ALG_NAME		(32)
240 
241 struct tipc_aead_key {
242 	char alg_name[TIPC_AEAD_ALG_NAME];
243 	unsigned int keylen;	/* in bytes */
244 	char key[];
245 };
246 
247 #define TIPC_AEAD_KEYLEN_MIN		(16 + 4)
248 #define TIPC_AEAD_KEYLEN_MAX		(32 + 4)
249 #define TIPC_AEAD_KEY_SIZE_MAX		(sizeof(struct tipc_aead_key) + \
250 							TIPC_AEAD_KEYLEN_MAX)
251 
tipc_aead_key_size(struct tipc_aead_key * key)252 static inline int tipc_aead_key_size(struct tipc_aead_key *key)
253 {
254 	return sizeof(*key) + key->keylen;
255 }
256 
257 #define TIPC_REKEYING_NOW		(~0U)
258 
259 /* The macros and functions below are deprecated:
260  */
261 
262 #define TIPC_CFG_SRV		0
263 #define TIPC_ZONE_SCOPE         1
264 
265 #define TIPC_ADDR_NAMESEQ	1
266 #define TIPC_ADDR_NAME		2
267 #define TIPC_ADDR_ID		3
268 
269 #define TIPC_NODE_BITS          12
270 #define TIPC_CLUSTER_BITS       12
271 #define TIPC_ZONE_BITS          8
272 
273 #define TIPC_NODE_OFFSET        0
274 #define TIPC_CLUSTER_OFFSET     TIPC_NODE_BITS
275 #define TIPC_ZONE_OFFSET        (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
276 
277 #define TIPC_NODE_SIZE          ((1UL << TIPC_NODE_BITS) - 1)
278 #define TIPC_CLUSTER_SIZE       ((1UL << TIPC_CLUSTER_BITS) - 1)
279 #define TIPC_ZONE_SIZE          ((1UL << TIPC_ZONE_BITS) - 1)
280 
281 #define TIPC_NODE_MASK		(TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
282 #define TIPC_CLUSTER_MASK	(TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
283 #define TIPC_ZONE_MASK		(TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)
284 
285 #define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)
286 
287 #define tipc_portid tipc_socket_addr
288 #define tipc_name tipc_service_addr
289 #define tipc_name_seq tipc_service_range
290 
tipc_addr(unsigned int zone,unsigned int cluster,unsigned int node)291 static inline __u32 tipc_addr(unsigned int zone,
292 			      unsigned int cluster,
293 			      unsigned int node)
294 {
295 	return (zone << TIPC_ZONE_OFFSET) |
296 		(cluster << TIPC_CLUSTER_OFFSET) |
297 		node;
298 }
299 
tipc_zone(__u32 addr)300 static inline unsigned int tipc_zone(__u32 addr)
301 {
302 	return addr >> TIPC_ZONE_OFFSET;
303 }
304 
tipc_cluster(__u32 addr)305 static inline unsigned int tipc_cluster(__u32 addr)
306 {
307 	return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
308 }
309 
tipc_node(__u32 addr)310 static inline unsigned int tipc_node(__u32 addr)
311 {
312 	return addr & TIPC_NODE_MASK;
313 }
314 
315 #endif
316