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1 | /* |
2 | * include/linux/tipc_config.h: Include file for TIPC configuration interface |
3 | * |
4 | * Copyright (c) 2003-2006, Ericsson AB |
5 | * Copyright (c) 2005-2007, Wind River Systems |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. Neither the names of the copyright holders nor the names of its |
17 | * contributors may be used to endorse or promote products derived from |
18 | * this software without specific prior written permission. |
19 | * |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * GNU General Public License ("GPL") version 2 as published by the Free |
22 | * Software Foundation. |
23 | * |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ |
36 | |
37 | #ifndef _LINUX_TIPC_CONFIG_H_ |
38 | #define _LINUX_TIPC_CONFIG_H_ |
39 | |
40 | #include <linux/types.h> |
41 | #include <linux/string.h> |
42 | #include <asm/byteorder.h> |
43 | |
44 | /* |
45 | * Configuration |
46 | * |
47 | * All configuration management messaging involves sending a request message |
48 | * to the TIPC configuration service on a node, which sends a reply message |
49 | * back. (In the future multi-message replies may be supported.) |
50 | * |
51 | * Both request and reply messages consist of a transport header and payload. |
52 | * The transport header contains info about the desired operation; |
53 | * the payload consists of zero or more type/length/value (TLV) items |
54 | * which specify parameters or results for the operation. |
55 | * |
56 | * For many operations, the request and reply messages have a fixed number |
57 | * of TLVs (usually zero or one); however, some reply messages may return |
58 | * a variable number of TLVs. A failed request is denoted by the presence |
59 | * of an "error string" TLV in the reply message instead of the TLV(s) the |
60 | * reply should contain if the request succeeds. |
61 | */ |
62 | |
63 | /* |
64 | * Public commands: |
65 | * May be issued by any process. |
66 | * Accepted by own node, or by remote node only if remote management enabled. |
67 | */ |
68 | |
69 | #define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */ |
70 | #define TIPC_CMD_GET_NODES 0x0001 /* tx net_addr, rx node_info(s) */ |
71 | #define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */ |
72 | #define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */ |
73 | #define TIPC_CMD_GET_LINKS 0x0004 /* tx net_addr, rx link_info(s) */ |
74 | #define TIPC_CMD_SHOW_NAME_TABLE 0x0005 /* tx name_tbl_query, rx ultra_string */ |
75 | #define TIPC_CMD_SHOW_PORTS 0x0006 /* tx none, rx ultra_string */ |
76 | #define TIPC_CMD_SHOW_LINK_STATS 0x000B /* tx link_name, rx ultra_string */ |
77 | |
78 | #if 0 |
79 | #define TIPC_CMD_SHOW_PORT_STATS 0x0008 /* tx port_ref, rx ultra_string */ |
80 | #define TIPC_CMD_RESET_PORT_STATS 0x0009 /* tx port_ref, rx none */ |
81 | #define TIPC_CMD_GET_ROUTES 0x000A /* tx ?, rx ? */ |
82 | #define TIPC_CMD_GET_LINK_PEER 0x000D /* tx link_name, rx ? */ |
83 | #endif |
84 | |
85 | /* |
86 | * Protected commands: |
87 | * May only be issued by "network administration capable" process. |
88 | * Accepted by own node, or by remote node only if remote management enabled |
89 | * and this node is zone manager. |
90 | */ |
91 | |
92 | #define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */ |
93 | #define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */ |
94 | #define TIPC_CMD_GET_MAX_PUBL 0x4005 /* tx none, rx unsigned */ |
95 | #define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* tx none, rx unsigned */ |
96 | #define TIPC_CMD_GET_MAX_ZONES 0x4007 /* tx none, rx unsigned */ |
97 | #define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* tx none, rx unsigned */ |
98 | #define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */ |
99 | #define TIPC_CMD_GET_MAX_SLAVES 0x400A /* tx none, rx unsigned */ |
100 | #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ |
101 | |
102 | #define TIPC_CMD_ENABLE_BEARER 0x4101 /* tx bearer_config, rx none */ |
103 | #define TIPC_CMD_DISABLE_BEARER 0x4102 /* tx bearer_name, rx none */ |
104 | #define TIPC_CMD_SET_LINK_TOL 0x4107 /* tx link_config, rx none */ |
105 | #define TIPC_CMD_SET_LINK_PRI 0x4108 /* tx link_config, rx none */ |
106 | #define TIPC_CMD_SET_LINK_WINDOW 0x4109 /* tx link_config, rx none */ |
107 | #define TIPC_CMD_SET_LOG_SIZE 0x410A /* tx unsigned, rx none */ |
108 | #define TIPC_CMD_DUMP_LOG 0x410B /* tx none, rx ultra_string */ |
109 | #define TIPC_CMD_RESET_LINK_STATS 0x410C /* tx link_name, rx none */ |
110 | |
111 | #if 0 |
112 | #define TIPC_CMD_CREATE_LINK 0x4103 /* tx link_create, rx none */ |
113 | #define TIPC_CMD_REMOVE_LINK 0x4104 /* tx link_name, rx none */ |
114 | #define TIPC_CMD_BLOCK_LINK 0x4105 /* tx link_name, rx none */ |
115 | #define TIPC_CMD_UNBLOCK_LINK 0x4106 /* tx link_name, rx none */ |
116 | #endif |
117 | |
118 | /* |
119 | * Private commands: |
120 | * May only be issued by "network administration capable" process. |
121 | * Accepted by own node only; cannot be used on a remote node. |
122 | */ |
123 | |
124 | #define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */ |
125 | #if 0 |
126 | #define TIPC_CMD_SET_ZONE_MASTER 0x8002 /* tx none, rx none */ |
127 | #endif |
128 | #define TIPC_CMD_SET_REMOTE_MNG 0x8003 /* tx unsigned, rx none */ |
129 | #define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */ |
130 | #define TIPC_CMD_SET_MAX_PUBL 0x8005 /* tx unsigned, rx none */ |
131 | #define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* tx unsigned, rx none */ |
132 | #define TIPC_CMD_SET_MAX_ZONES 0x8007 /* tx unsigned, rx none */ |
133 | #define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* tx unsigned, rx none */ |
134 | #define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */ |
135 | #define TIPC_CMD_SET_MAX_SLAVES 0x800A /* tx unsigned, rx none */ |
136 | #define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */ |
137 | |
138 | /* |
139 | * Reserved commands: |
140 | * May not be issued by any process. |
141 | * Used internally by TIPC. |
142 | */ |
143 | |
144 | #define TIPC_CMD_NOT_NET_ADMIN 0xC001 /* tx none, rx none */ |
145 | |
146 | /* |
147 | * TLV types defined for TIPC |
148 | */ |
149 | |
150 | #define TIPC_TLV_NONE 0 /* no TLV present */ |
151 | #define TIPC_TLV_VOID 1 /* empty TLV (0 data bytes)*/ |
152 | #define TIPC_TLV_UNSIGNED 2 /* 32-bit integer */ |
153 | #define TIPC_TLV_STRING 3 /* char[128] (max) */ |
154 | #define TIPC_TLV_LARGE_STRING 4 /* char[2048] (max) */ |
155 | #define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */ |
156 | |
157 | #define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */ |
158 | #define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting <Z.C.N> */ |
159 | #define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */ |
160 | #define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */ |
161 | #define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */ |
162 | #define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */ |
163 | #define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */ |
164 | #define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */ |
165 | #define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */ |
166 | #define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */ |
167 | #define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */ |
168 | |
169 | /* |
170 | * Maximum sizes of TIPC bearer-related names (including terminating NUL) |
171 | */ |
172 | |
173 | #define TIPC_MAX_MEDIA_NAME 16 /* format = media */ |
174 | #define TIPC_MAX_IF_NAME 16 /* format = interface */ |
175 | #define TIPC_MAX_BEARER_NAME 32 /* format = media:interface */ |
176 | #define TIPC_MAX_LINK_NAME 60 /* format = Z.C.N:interface-Z.C.N:interface */ |
177 | |
178 | /* |
179 | * Link priority limits (min, default, max, media default) |
180 | */ |
181 | |
182 | #define TIPC_MIN_LINK_PRI 0 |
183 | #define TIPC_DEF_LINK_PRI 10 |
184 | #define TIPC_MAX_LINK_PRI 31 |
185 | #define TIPC_MEDIA_LINK_PRI (TIPC_MAX_LINK_PRI + 1) |
186 | |
187 | /* |
188 | * Link tolerance limits (min, default, max), in ms |
189 | */ |
190 | |
191 | #define TIPC_MIN_LINK_TOL 50 |
192 | #define TIPC_DEF_LINK_TOL 1500 |
193 | #define TIPC_MAX_LINK_TOL 30000 |
194 | |
195 | /* |
196 | * Link window limits (min, default, max), in packets |
197 | */ |
198 | |
199 | #define TIPC_MIN_LINK_WIN 16 |
200 | #define TIPC_DEF_LINK_WIN 50 |
201 | #define TIPC_MAX_LINK_WIN 150 |
202 | |
203 | |
204 | struct tipc_node_info { |
205 | __be32 addr; /* network address of node */ |
206 | __be32 up; /* 0=down, 1= up */ |
207 | }; |
208 | |
209 | struct tipc_link_info { |
210 | __be32 dest; /* network address of peer node */ |
211 | __be32 up; /* 0=down, 1=up */ |
212 | char str[TIPC_MAX_LINK_NAME]; /* link name */ |
213 | }; |
214 | |
215 | struct tipc_bearer_config { |
216 | __be32 priority; /* Range [1,31]. Override per link */ |
217 | __be32 detect_scope; |
218 | char name[TIPC_MAX_BEARER_NAME]; |
219 | }; |
220 | |
221 | struct tipc_link_config { |
222 | __be32 value; |
223 | char name[TIPC_MAX_LINK_NAME]; |
224 | }; |
225 | |
226 | #define TIPC_NTQ_ALLTYPES 0x80000000 |
227 | |
228 | struct tipc_name_table_query { |
229 | __be32 depth; /* 1:type, 2:+name info, 3:+port info, 4+:+debug info */ |
230 | __be32 type; /* {t,l,u} info ignored if high bit of "depth" is set */ |
231 | __be32 lowbound; /* (i.e. displays all entries of name table) */ |
232 | __be32 upbound; |
233 | }; |
234 | |
235 | /* |
236 | * The error string TLV is a null-terminated string describing the cause |
237 | * of the request failure. To simplify error processing (and to save space) |
238 | * the first character of the string can be a special error code character |
239 | * (lying by the range 0x80 to 0xFF) which represents a pre-defined reason. |
240 | */ |
241 | |
242 | #define TIPC_CFG_TLV_ERROR "\x80" /* request contains incorrect TLV(s) */ |
243 | #define TIPC_CFG_NOT_NET_ADMIN "\x81" /* must be network administrator */ |
244 | #define TIPC_CFG_NOT_ZONE_MSTR "\x82" /* must be zone master */ |
245 | #define TIPC_CFG_NO_REMOTE "\x83" /* remote management not enabled */ |
246 | #define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */ |
247 | #define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */ |
248 | |
249 | #if 0 |
250 | /* prototypes TLV structures for proposed commands */ |
251 | struct tipc_link_create { |
252 | __u32 domain; |
253 | struct tipc_media_addr peer_addr; |
254 | char bearer_name[TIPC_MAX_BEARER_NAME]; |
255 | }; |
256 | |
257 | struct tipc_route_info { |
258 | __u32 dest; |
259 | __u32 router; |
260 | }; |
261 | #endif |
262 | |
263 | /* |
264 | * A TLV consists of a descriptor, followed by the TLV value. |
265 | * TLV descriptor fields are stored in network byte order; |
266 | * TLV values must also be stored in network byte order (where applicable). |
267 | * TLV descriptors must be aligned to addresses which are multiple of 4, |
268 | * so up to 3 bytes of padding may exist at the end of the TLV value area. |
269 | * There must not be any padding between the TLV descriptor and its value. |
270 | */ |
271 | |
272 | struct tlv_desc { |
273 | __be16 tlv_len; /* TLV length (descriptor + value) */ |
274 | __be16 tlv_type; /* TLV identifier */ |
275 | }; |
276 | |
277 | #define TLV_ALIGNTO 4 |
278 | |
279 | #define TLV_ALIGN(datalen) (((datalen)+(TLV_ALIGNTO-1)) & ~(TLV_ALIGNTO-1)) |
280 | #define TLV_LENGTH(datalen) (sizeof(struct tlv_desc) + (datalen)) |
281 | #define TLV_SPACE(datalen) (TLV_ALIGN(TLV_LENGTH(datalen))) |
282 | #define TLV_DATA(tlv) ((void *)((char *)(tlv) + TLV_LENGTH(0))) |
283 | |
284 | static inline int TLV_OK(const void *tlv, __u16 space) |
285 | { |
286 | /* |
287 | * Would also like to check that "tlv" is a multiple of 4, |
288 | * but don't know how to do this in a portable way. |
289 | * - Tried doing (!(tlv & (TLV_ALIGNTO-1))), but GCC compiler |
290 | * won't allow binary "&" with a pointer. |
291 | * - Tried casting "tlv" to integer type, but causes warning about size |
292 | * mismatch when pointer is bigger than chosen type (int, long, ...). |
293 | */ |
294 | |
295 | return (space >= TLV_SPACE(0)) && |
296 | (ntohs(((struct tlv_desc *)tlv)->tlv_len) <= space); |
297 | } |
298 | |
299 | static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type) |
300 | { |
301 | return TLV_OK(tlv, space) && |
302 | (ntohs(((struct tlv_desc *)tlv)->tlv_type) == exp_type); |
303 | } |
304 | |
305 | static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len) |
306 | { |
307 | struct tlv_desc *tlv_ptr; |
308 | int tlv_len; |
309 | |
310 | tlv_len = TLV_LENGTH(len); |
311 | tlv_ptr = (struct tlv_desc *)tlv; |
312 | tlv_ptr->tlv_type = htons(type); |
313 | tlv_ptr->tlv_len = htons(tlv_len); |
314 | if (len && data) |
315 | memcpy(TLV_DATA(tlv_ptr), data, tlv_len); |
316 | return TLV_SPACE(len); |
317 | } |
318 | |
319 | /* |
320 | * A TLV list descriptor simplifies processing of messages |
321 | * containing multiple TLVs. |
322 | */ |
323 | |
324 | struct tlv_list_desc { |
325 | struct tlv_desc *tlv_ptr; /* ptr to current TLV */ |
326 | __u32 tlv_space; /* # bytes from curr TLV to list end */ |
327 | }; |
328 | |
329 | static inline void TLV_LIST_INIT(struct tlv_list_desc *list, |
330 | void *data, __u32 space) |
331 | { |
332 | list->tlv_ptr = (struct tlv_desc *)data; |
333 | list->tlv_space = space; |
334 | } |
335 | |
336 | static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list) |
337 | { |
338 | return (list->tlv_space == 0); |
339 | } |
340 | |
341 | static inline int TLV_LIST_CHECK(struct tlv_list_desc *list, __u16 exp_type) |
342 | { |
343 | return TLV_CHECK(list->tlv_ptr, list->tlv_space, exp_type); |
344 | } |
345 | |
346 | static inline void *TLV_LIST_DATA(struct tlv_list_desc *list) |
347 | { |
348 | return TLV_DATA(list->tlv_ptr); |
349 | } |
350 | |
351 | static inline void TLV_LIST_STEP(struct tlv_list_desc *list) |
352 | { |
353 | __u16 tlv_space = TLV_ALIGN(ntohs(list->tlv_ptr->tlv_len)); |
354 | |
355 | list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space); |
356 | list->tlv_space -= tlv_space; |
357 | } |
358 | |
359 | /* |
360 | * Configuration messages exchanged via NETLINK_GENERIC use the following |
361 | * family id, name, version and command. |
362 | */ |
363 | #define TIPC_GENL_NAME "TIPC" |
364 | #define TIPC_GENL_VERSION 0x1 |
365 | #define TIPC_GENL_CMD 0x1 |
366 | |
367 | /* |
368 | * TIPC specific header used in NETLINK_GENERIC requests. |
369 | */ |
370 | struct tipc_genlmsghdr { |
371 | __u32 dest; /* Destination address */ |
372 | __u16 cmd; /* Command */ |
373 | __u16 reserved; /* Unused */ |
374 | }; |
375 | |
376 | #define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof(struct tipc_genlmsghdr)) |
377 | |
378 | /* |
379 | * Configuration messages exchanged via TIPC sockets use the TIPC configuration |
380 | * message header, which is defined below. This structure is analogous |
381 | * to the Netlink message header, but fields are stored in network byte order |
382 | * and no padding is permitted between the header and the message data |
383 | * that follows. |
384 | */ |
385 | |
386 | struct tipc_cfg_msg_hdr |
387 | { |
388 | __be32 tcm_len; /* Message length (including header) */ |
389 | __be16 tcm_type; /* Command type */ |
390 | __be16 tcm_flags; /* Additional flags */ |
391 | char tcm_reserved[8]; /* Unused */ |
392 | }; |
393 | |
394 | #define TCM_F_REQUEST 0x1 /* Flag: Request message */ |
395 | #define TCM_F_MORE 0x2 /* Flag: Message to be continued */ |
396 | |
397 | #define TCM_ALIGN(datalen) (((datalen)+3) & ~3) |
398 | #define TCM_LENGTH(datalen) (sizeof(struct tipc_cfg_msg_hdr) + datalen) |
399 | #define TCM_SPACE(datalen) (TCM_ALIGN(TCM_LENGTH(datalen))) |
400 | #define TCM_DATA(tcm_hdr) ((void *)((char *)(tcm_hdr) + TCM_LENGTH(0))) |
401 | |
402 | static inline int TCM_SET(void *msg, __u16 cmd, __u16 flags, |
403 | void *data, __u16 data_len) |
404 | { |
405 | struct tipc_cfg_msg_hdr *tcm_hdr; |
406 | int msg_len; |
407 | |
408 | msg_len = TCM_LENGTH(data_len); |
409 | tcm_hdr = (struct tipc_cfg_msg_hdr *)msg; |
410 | tcm_hdr->tcm_len = htonl(msg_len); |
411 | tcm_hdr->tcm_type = htons(cmd); |
412 | tcm_hdr->tcm_flags = htons(flags); |
413 | if (data_len && data) |
414 | memcpy(TCM_DATA(msg), data, data_len); |
415 | return TCM_SPACE(data_len); |
416 | } |
417 | |
418 | #endif |
419 |
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