Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/msg.h: Include file for TIPC message header routines | |
c4307285 | 3 | * |
37e22164 | 4 | * Copyright (c) 2000-2007, 2014, Ericsson AB |
741de3e9 | 5 | * Copyright (c) 2005-2008, 2010-2011, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
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. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
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 | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #ifndef _TIPC_MSG_H | |
38 | #define _TIPC_MSG_H | |
39 | ||
1da46568 | 40 | #include <linux/tipc.h> |
b97bf3fd | 41 | |
cc4c4353 AS |
42 | /* |
43 | * Constants and routines used to read and write TIPC payload message headers | |
44 | * | |
45 | * Note: Some items are also used with TIPC internal message headers | |
46 | */ | |
b97bf3fd | 47 | #define TIPC_VERSION 2 |
c637c103 | 48 | struct plist; |
06d82c91 | 49 | |
d265fef6 | 50 | /* |
cc4c4353 AS |
51 | * Payload message users are defined in TIPC's public API: |
52 | * - TIPC_LOW_IMPORTANCE | |
53 | * - TIPC_MEDIUM_IMPORTANCE | |
54 | * - TIPC_HIGH_IMPORTANCE | |
55 | * - TIPC_CRITICAL_IMPORTANCE | |
56 | */ | |
57 | ||
58 | /* | |
59 | * Payload message types | |
d265fef6 | 60 | */ |
d265fef6 AS |
61 | #define TIPC_CONN_MSG 0 |
62 | #define TIPC_MCAST_MSG 1 | |
63 | #define TIPC_NAMED_MSG 2 | |
64 | #define TIPC_DIRECT_MSG 3 | |
65 | ||
cc4c4353 AS |
66 | /* |
67 | * Message header sizes | |
68 | */ | |
741d9eb7 AS |
69 | #define SHORT_H_SIZE 24 /* In-cluster basic payload message */ |
70 | #define BASIC_H_SIZE 32 /* Basic payload message */ | |
71 | #define NAMED_H_SIZE 40 /* Named payload message */ | |
72 | #define MCAST_H_SIZE 44 /* Multicast payload message */ | |
06d82c91 AS |
73 | #define INT_H_SIZE 40 /* Internal messages */ |
74 | #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ | |
75 | #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ | |
76 | ||
b97bf3fd | 77 | #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
b97bf3fd | 78 | |
3d749a6a AS |
79 | #define TIPC_MEDIA_ADDR_OFFSET 5 |
80 | ||
859fc7c0 YX |
81 | /** |
82 | * TIPC message buffer code | |
83 | * | |
84 | * TIPC message buffer headroom reserves space for the worst-case | |
85 | * link-level device header (in case the message is sent off-node). | |
86 | * | |
87 | * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields | |
88 | * are word aligned for quicker access | |
89 | */ | |
90 | #define BUF_HEADROOM LL_MAX_HEADER | |
91 | ||
92 | struct tipc_skb_cb { | |
93 | void *handle; | |
94 | struct sk_buff *tail; | |
95 | bool deferred; | |
96 | bool wakeup_pending; | |
97 | bool bundling; | |
98 | u16 chain_sz; | |
99 | u16 chain_imp; | |
100 | }; | |
101 | ||
102 | #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) | |
103 | ||
d265fef6 AS |
104 | struct tipc_msg { |
105 | __be32 hdr[15]; | |
106 | }; | |
c4307285 | 107 | |
859fc7c0 YX |
108 | static inline struct tipc_msg *buf_msg(struct sk_buff *skb) |
109 | { | |
110 | return (struct tipc_msg *)skb->data; | |
111 | } | |
112 | ||
d265fef6 AS |
113 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
114 | { | |
115 | return ntohl(m->hdr[pos]); | |
116 | } | |
b97bf3fd PL |
117 | |
118 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) | |
119 | { | |
120 | m->hdr[w] = htonl(val); | |
121 | } | |
122 | ||
d265fef6 AS |
123 | static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) |
124 | { | |
125 | return (msg_word(m, w) >> pos) & mask; | |
126 | } | |
127 | ||
b97bf3fd PL |
128 | static inline void msg_set_bits(struct tipc_msg *m, u32 w, |
129 | u32 pos, u32 mask, u32 val) | |
130 | { | |
1f9eda7e | 131 | val = (val & mask) << pos; |
becf3da2 AV |
132 | mask = mask << pos; |
133 | m->hdr[w] &= ~htonl(mask); | |
134 | m->hdr[w] |= htonl(val); | |
b97bf3fd PL |
135 | } |
136 | ||
40aecb1b AS |
137 | static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) |
138 | { | |
139 | u32 temp = msg->hdr[a]; | |
140 | ||
141 | msg->hdr[a] = msg->hdr[b]; | |
142 | msg->hdr[b] = temp; | |
143 | } | |
144 | ||
c4307285 | 145 | /* |
b97bf3fd PL |
146 | * Word 0 |
147 | */ | |
b97bf3fd PL |
148 | static inline u32 msg_version(struct tipc_msg *m) |
149 | { | |
150 | return msg_bits(m, 0, 29, 7); | |
151 | } | |
152 | ||
c4307285 | 153 | static inline void msg_set_version(struct tipc_msg *m) |
b97bf3fd | 154 | { |
37695420 | 155 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
b97bf3fd PL |
156 | } |
157 | ||
158 | static inline u32 msg_user(struct tipc_msg *m) | |
159 | { | |
160 | return msg_bits(m, 0, 25, 0xf); | |
161 | } | |
162 | ||
163 | static inline u32 msg_isdata(struct tipc_msg *m) | |
164 | { | |
a02cec21 | 165 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
b97bf3fd PL |
166 | } |
167 | ||
c4307285 | 168 | static inline void msg_set_user(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
169 | { |
170 | msg_set_bits(m, 0, 25, 0xf, n); | |
171 | } | |
172 | ||
d265fef6 AS |
173 | static inline u32 msg_importance(struct tipc_msg *m) |
174 | { | |
175 | return msg_bits(m, 0, 25, 0xf); | |
176 | } | |
177 | ||
c4307285 | 178 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) |
b97bf3fd PL |
179 | { |
180 | msg_set_user(m, i); | |
181 | } | |
182 | ||
d265fef6 AS |
183 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
184 | { | |
185 | return msg_bits(m, 0, 21, 0xf) << 2; | |
186 | } | |
187 | ||
0e65967e | 188 | static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
189 | { |
190 | msg_set_bits(m, 0, 21, 0xf, n>>2); | |
191 | } | |
192 | ||
d265fef6 AS |
193 | static inline u32 msg_size(struct tipc_msg *m) |
194 | { | |
195 | return msg_bits(m, 0, 0, 0x1ffff); | |
196 | } | |
197 | ||
198 | static inline u32 msg_data_sz(struct tipc_msg *m) | |
199 | { | |
200 | return msg_size(m) - msg_hdr_sz(m); | |
201 | } | |
202 | ||
c4307285 | 203 | static inline int msg_non_seq(struct tipc_msg *m) |
b97bf3fd PL |
204 | { |
205 | return msg_bits(m, 0, 20, 1); | |
206 | } | |
207 | ||
40aecb1b | 208 | static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) |
b97bf3fd | 209 | { |
40aecb1b | 210 | msg_set_bits(m, 0, 20, 1, n); |
b97bf3fd PL |
211 | } |
212 | ||
c4307285 | 213 | static inline int msg_dest_droppable(struct tipc_msg *m) |
b97bf3fd PL |
214 | { |
215 | return msg_bits(m, 0, 19, 1); | |
216 | } | |
217 | ||
c4307285 | 218 | static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
219 | { |
220 | msg_set_bits(m, 0, 19, 1, d); | |
221 | } | |
222 | ||
c4307285 | 223 | static inline int msg_src_droppable(struct tipc_msg *m) |
b97bf3fd PL |
224 | { |
225 | return msg_bits(m, 0, 18, 1); | |
226 | } | |
227 | ||
c4307285 | 228 | static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
229 | { |
230 | msg_set_bits(m, 0, 18, 1, d); | |
231 | } | |
232 | ||
233 | static inline void msg_set_size(struct tipc_msg *m, u32 sz) | |
234 | { | |
235 | m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); | |
236 | } | |
237 | ||
238 | ||
c4307285 | 239 | /* |
b97bf3fd PL |
240 | * Word 1 |
241 | */ | |
d265fef6 AS |
242 | static inline u32 msg_type(struct tipc_msg *m) |
243 | { | |
244 | return msg_bits(m, 1, 29, 0x7); | |
245 | } | |
246 | ||
c4307285 | 247 | static inline void msg_set_type(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
248 | { |
249 | msg_set_bits(m, 1, 29, 0x7, n); | |
250 | } | |
251 | ||
d265fef6 AS |
252 | static inline u32 msg_named(struct tipc_msg *m) |
253 | { | |
254 | return msg_type(m) == TIPC_NAMED_MSG; | |
255 | } | |
256 | ||
257 | static inline u32 msg_mcast(struct tipc_msg *m) | |
258 | { | |
259 | return msg_type(m) == TIPC_MCAST_MSG; | |
260 | } | |
261 | ||
262 | static inline u32 msg_connected(struct tipc_msg *m) | |
263 | { | |
264 | return msg_type(m) == TIPC_CONN_MSG; | |
265 | } | |
266 | ||
267 | static inline u32 msg_errcode(struct tipc_msg *m) | |
268 | { | |
269 | return msg_bits(m, 1, 25, 0xf); | |
270 | } | |
271 | ||
c4307285 | 272 | static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
b97bf3fd PL |
273 | { |
274 | msg_set_bits(m, 1, 25, 0xf, err); | |
275 | } | |
276 | ||
c4307285 | 277 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
278 | { |
279 | return msg_bits(m, 1, 21, 0xf); | |
280 | } | |
281 | ||
c4307285 | 282 | static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
283 | { |
284 | msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); | |
285 | } | |
286 | ||
c4307285 | 287 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
288 | { |
289 | msg_set_bits(m, 1, 21, 0xf, 0); | |
290 | } | |
291 | ||
292 | static inline u32 msg_lookup_scope(struct tipc_msg *m) | |
293 | { | |
294 | return msg_bits(m, 1, 19, 0x3); | |
295 | } | |
296 | ||
c4307285 | 297 | static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
298 | { |
299 | msg_set_bits(m, 1, 19, 0x3, n); | |
300 | } | |
301 | ||
b97bf3fd PL |
302 | static inline u32 msg_bcast_ack(struct tipc_msg *m) |
303 | { | |
304 | return msg_bits(m, 1, 0, 0xffff); | |
305 | } | |
306 | ||
c4307285 | 307 | static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
308 | { |
309 | msg_set_bits(m, 1, 0, 0xffff, n); | |
310 | } | |
311 | ||
312 | ||
c4307285 | 313 | /* |
b97bf3fd PL |
314 | * Word 2 |
315 | */ | |
b97bf3fd PL |
316 | static inline u32 msg_ack(struct tipc_msg *m) |
317 | { | |
318 | return msg_bits(m, 2, 16, 0xffff); | |
319 | } | |
320 | ||
c4307285 | 321 | static inline void msg_set_ack(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
322 | { |
323 | msg_set_bits(m, 2, 16, 0xffff, n); | |
324 | } | |
325 | ||
326 | static inline u32 msg_seqno(struct tipc_msg *m) | |
327 | { | |
328 | return msg_bits(m, 2, 0, 0xffff); | |
329 | } | |
330 | ||
c4307285 | 331 | static inline void msg_set_seqno(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
332 | { |
333 | msg_set_bits(m, 2, 0, 0xffff, n); | |
334 | } | |
335 | ||
c4307285 | 336 | /* |
b97bf3fd PL |
337 | * Words 3-10 |
338 | */ | |
d265fef6 AS |
339 | static inline u32 msg_prevnode(struct tipc_msg *m) |
340 | { | |
341 | return msg_word(m, 3); | |
342 | } | |
343 | ||
c4307285 | 344 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
345 | { |
346 | msg_set_word(m, 3, a); | |
347 | } | |
348 | ||
d265fef6 AS |
349 | static inline u32 msg_origport(struct tipc_msg *m) |
350 | { | |
351 | return msg_word(m, 4); | |
352 | } | |
353 | ||
c4307285 | 354 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
355 | { |
356 | msg_set_word(m, 4, p); | |
357 | } | |
358 | ||
d265fef6 AS |
359 | static inline u32 msg_destport(struct tipc_msg *m) |
360 | { | |
361 | return msg_word(m, 5); | |
362 | } | |
363 | ||
c4307285 | 364 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
365 | { |
366 | msg_set_word(m, 5, p); | |
367 | } | |
368 | ||
d265fef6 AS |
369 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
370 | { | |
371 | return msg_word(m, 5); | |
372 | } | |
373 | ||
c4307285 | 374 | static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
375 | { |
376 | msg_set_word(m, 5, p); | |
377 | } | |
378 | ||
d265fef6 AS |
379 | static inline int msg_short(struct tipc_msg *m) |
380 | { | |
741d9eb7 | 381 | return msg_hdr_sz(m) == SHORT_H_SIZE; |
d265fef6 AS |
382 | } |
383 | ||
384 | static inline u32 msg_orignode(struct tipc_msg *m) | |
385 | { | |
386 | if (likely(msg_short(m))) | |
387 | return msg_prevnode(m); | |
388 | return msg_word(m, 6); | |
389 | } | |
390 | ||
c4307285 | 391 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
392 | { |
393 | msg_set_word(m, 6, a); | |
394 | } | |
395 | ||
d265fef6 AS |
396 | static inline u32 msg_destnode(struct tipc_msg *m) |
397 | { | |
398 | return msg_word(m, 7); | |
399 | } | |
400 | ||
c4307285 | 401 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
402 | { |
403 | msg_set_word(m, 7, a); | |
404 | } | |
405 | ||
d265fef6 AS |
406 | static inline u32 msg_nametype(struct tipc_msg *m) |
407 | { | |
408 | return msg_word(m, 8); | |
409 | } | |
410 | ||
c4307285 | 411 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
412 | { |
413 | msg_set_word(m, 8, n); | |
414 | } | |
415 | ||
d265fef6 AS |
416 | static inline u32 msg_nameinst(struct tipc_msg *m) |
417 | { | |
418 | return msg_word(m, 9); | |
419 | } | |
420 | ||
421 | static inline u32 msg_namelower(struct tipc_msg *m) | |
422 | { | |
423 | return msg_nameinst(m); | |
424 | } | |
425 | ||
c4307285 | 426 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
427 | { |
428 | msg_set_word(m, 9, n); | |
429 | } | |
430 | ||
c4307285 | 431 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
432 | { |
433 | msg_set_namelower(m, n); | |
434 | } | |
435 | ||
d265fef6 AS |
436 | static inline u32 msg_nameupper(struct tipc_msg *m) |
437 | { | |
438 | return msg_word(m, 10); | |
439 | } | |
440 | ||
c4307285 | 441 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
442 | { |
443 | msg_set_word(m, 10, n); | |
444 | } | |
445 | ||
d265fef6 AS |
446 | static inline unchar *msg_data(struct tipc_msg *m) |
447 | { | |
448 | return ((unchar *)m) + msg_hdr_sz(m); | |
449 | } | |
450 | ||
b97bf3fd PL |
451 | static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) |
452 | { | |
453 | return (struct tipc_msg *)msg_data(m); | |
454 | } | |
455 | ||
b97bf3fd | 456 | /* |
cc4c4353 AS |
457 | * Constants and routines used to read and write TIPC internal message headers |
458 | */ | |
b97bf3fd | 459 | |
c4307285 | 460 | /* |
cc4c4353 | 461 | * Internal message users |
b97bf3fd | 462 | */ |
b97bf3fd PL |
463 | #define BCAST_PROTOCOL 5 |
464 | #define MSG_BUNDLER 6 | |
465 | #define LINK_PROTOCOL 7 | |
466 | #define CONN_MANAGER 8 | |
51a8e4de | 467 | #define ROUTE_DISTRIBUTOR 9 /* obsoleted */ |
b97bf3fd PL |
468 | #define CHANGEOVER_PROTOCOL 10 |
469 | #define NAME_DISTRIBUTOR 11 | |
470 | #define MSG_FRAGMENTER 12 | |
471 | #define LINK_CONFIG 13 | |
50100a5e | 472 | #define SOCK_WAKEUP 14 /* pseudo user */ |
b97bf3fd | 473 | |
c4307285 | 474 | /* |
cc4c4353 | 475 | * Connection management protocol message types |
b97bf3fd | 476 | */ |
b97bf3fd PL |
477 | #define CONN_PROBE 0 |
478 | #define CONN_PROBE_REPLY 1 | |
479 | #define CONN_ACK 2 | |
480 | ||
c4307285 | 481 | /* |
cc4c4353 | 482 | * Name distributor message types |
b97bf3fd | 483 | */ |
b97bf3fd PL |
484 | #define PUBLICATION 0 |
485 | #define WITHDRAWAL 1 | |
486 | ||
92138d1f AS |
487 | /* |
488 | * Segmentation message types | |
489 | */ | |
92138d1f AS |
490 | #define FIRST_FRAGMENT 0 |
491 | #define FRAGMENT 1 | |
492 | #define LAST_FRAGMENT 2 | |
493 | ||
494 | /* | |
495 | * Link management protocol message types | |
496 | */ | |
92138d1f AS |
497 | #define STATE_MSG 0 |
498 | #define RESET_MSG 1 | |
499 | #define ACTIVATE_MSG 2 | |
500 | ||
501 | /* | |
502 | * Changeover tunnel message types | |
503 | */ | |
504 | #define DUPLICATE_MSG 0 | |
505 | #define ORIGINAL_MSG 1 | |
506 | ||
507 | /* | |
508 | * Config protocol message types | |
509 | */ | |
92138d1f AS |
510 | #define DSC_REQ_MSG 0 |
511 | #define DSC_RESP_MSG 1 | |
512 | ||
b97bf3fd | 513 | |
c4307285 | 514 | /* |
b97bf3fd PL |
515 | * Word 1 |
516 | */ | |
b97bf3fd PL |
517 | static inline u32 msg_seq_gap(struct tipc_msg *m) |
518 | { | |
bd784533 | 519 | return msg_bits(m, 1, 16, 0x1fff); |
b97bf3fd PL |
520 | } |
521 | ||
522 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) | |
523 | { | |
bd784533 | 524 | msg_set_bits(m, 1, 16, 0x1fff, n); |
b97bf3fd PL |
525 | } |
526 | ||
fc0eea69 AS |
527 | static inline u32 msg_node_sig(struct tipc_msg *m) |
528 | { | |
529 | return msg_bits(m, 1, 0, 0xffff); | |
530 | } | |
531 | ||
532 | static inline void msg_set_node_sig(struct tipc_msg *m, u32 n) | |
533 | { | |
534 | msg_set_bits(m, 1, 0, 0xffff, n); | |
535 | } | |
536 | ||
b97bf3fd | 537 | |
c4307285 | 538 | /* |
b97bf3fd PL |
539 | * Word 2 |
540 | */ | |
b97bf3fd PL |
541 | static inline u32 msg_dest_domain(struct tipc_msg *m) |
542 | { | |
543 | return msg_word(m, 2); | |
544 | } | |
545 | ||
c4307285 | 546 | static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
547 | { |
548 | msg_set_word(m, 2, n); | |
549 | } | |
550 | ||
551 | static inline u32 msg_bcgap_after(struct tipc_msg *m) | |
552 | { | |
553 | return msg_bits(m, 2, 16, 0xffff); | |
554 | } | |
555 | ||
556 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) | |
557 | { | |
558 | msg_set_bits(m, 2, 16, 0xffff, n); | |
559 | } | |
560 | ||
561 | static inline u32 msg_bcgap_to(struct tipc_msg *m) | |
562 | { | |
563 | return msg_bits(m, 2, 0, 0xffff); | |
564 | } | |
565 | ||
c4307285 | 566 | static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
567 | { |
568 | msg_set_bits(m, 2, 0, 0xffff, n); | |
569 | } | |
570 | ||
571 | ||
c4307285 | 572 | /* |
b97bf3fd PL |
573 | * Word 4 |
574 | */ | |
b97bf3fd PL |
575 | static inline u32 msg_last_bcast(struct tipc_msg *m) |
576 | { | |
577 | return msg_bits(m, 4, 16, 0xffff); | |
578 | } | |
579 | ||
580 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) | |
581 | { | |
582 | msg_set_bits(m, 4, 16, 0xffff, n); | |
583 | } | |
584 | ||
b97bf3fd PL |
585 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) |
586 | { | |
587 | msg_set_bits(m, 4, 16, 0xffff, n); | |
588 | } | |
589 | ||
590 | ||
591 | static inline u32 msg_next_sent(struct tipc_msg *m) | |
592 | { | |
593 | return msg_bits(m, 4, 0, 0xffff); | |
594 | } | |
595 | ||
596 | static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) | |
597 | { | |
598 | msg_set_bits(m, 4, 0, 0xffff, n); | |
599 | } | |
600 | ||
b97bf3fd PL |
601 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) |
602 | { | |
603 | msg_set_bits(m, 4, 0, 0xffff, n); | |
604 | } | |
605 | ||
606 | static inline u32 msg_bc_netid(struct tipc_msg *m) | |
607 | { | |
608 | return msg_word(m, 4); | |
609 | } | |
610 | ||
611 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) | |
612 | { | |
613 | msg_set_word(m, 4, id); | |
614 | } | |
615 | ||
616 | static inline u32 msg_link_selector(struct tipc_msg *m) | |
617 | { | |
618 | return msg_bits(m, 4, 0, 1); | |
619 | } | |
620 | ||
621 | static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) | |
622 | { | |
7eb878ed | 623 | msg_set_bits(m, 4, 0, 1, n); |
b97bf3fd PL |
624 | } |
625 | ||
c4307285 | 626 | /* |
b97bf3fd PL |
627 | * Word 5 |
628 | */ | |
b97bf3fd PL |
629 | static inline u32 msg_session(struct tipc_msg *m) |
630 | { | |
631 | return msg_bits(m, 5, 16, 0xffff); | |
632 | } | |
633 | ||
634 | static inline void msg_set_session(struct tipc_msg *m, u32 n) | |
635 | { | |
636 | msg_set_bits(m, 5, 16, 0xffff, n); | |
637 | } | |
638 | ||
639 | static inline u32 msg_probe(struct tipc_msg *m) | |
640 | { | |
641 | return msg_bits(m, 5, 0, 1); | |
642 | } | |
643 | ||
644 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) | |
645 | { | |
7eb878ed | 646 | msg_set_bits(m, 5, 0, 1, val); |
b97bf3fd PL |
647 | } |
648 | ||
649 | static inline char msg_net_plane(struct tipc_msg *m) | |
650 | { | |
651 | return msg_bits(m, 5, 1, 7) + 'A'; | |
652 | } | |
653 | ||
654 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) | |
655 | { | |
656 | msg_set_bits(m, 5, 1, 7, (n - 'A')); | |
657 | } | |
658 | ||
659 | static inline u32 msg_linkprio(struct tipc_msg *m) | |
660 | { | |
661 | return msg_bits(m, 5, 4, 0x1f); | |
662 | } | |
663 | ||
664 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) | |
665 | { | |
666 | msg_set_bits(m, 5, 4, 0x1f, n); | |
667 | } | |
668 | ||
669 | static inline u32 msg_bearer_id(struct tipc_msg *m) | |
670 | { | |
671 | return msg_bits(m, 5, 9, 0x7); | |
672 | } | |
673 | ||
674 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) | |
675 | { | |
676 | msg_set_bits(m, 5, 9, 0x7, n); | |
677 | } | |
678 | ||
679 | static inline u32 msg_redundant_link(struct tipc_msg *m) | |
680 | { | |
681 | return msg_bits(m, 5, 12, 0x1); | |
682 | } | |
683 | ||
77f167fc | 684 | static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r) |
b97bf3fd | 685 | { |
77f167fc | 686 | msg_set_bits(m, 5, 12, 0x1, r); |
b97bf3fd PL |
687 | } |
688 | ||
3d749a6a AS |
689 | static inline char *msg_media_addr(struct tipc_msg *m) |
690 | { | |
691 | return (char *)&m->hdr[TIPC_MEDIA_ADDR_OFFSET]; | |
692 | } | |
b97bf3fd | 693 | |
c4307285 | 694 | /* |
b97bf3fd PL |
695 | * Word 9 |
696 | */ | |
b97bf3fd PL |
697 | static inline u32 msg_msgcnt(struct tipc_msg *m) |
698 | { | |
699 | return msg_bits(m, 9, 16, 0xffff); | |
700 | } | |
701 | ||
702 | static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) | |
703 | { | |
704 | msg_set_bits(m, 9, 16, 0xffff, n); | |
705 | } | |
706 | ||
707 | static inline u32 msg_bcast_tag(struct tipc_msg *m) | |
708 | { | |
709 | return msg_bits(m, 9, 16, 0xffff); | |
710 | } | |
711 | ||
712 | static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) | |
713 | { | |
714 | msg_set_bits(m, 9, 16, 0xffff, n); | |
715 | } | |
716 | ||
c4307285 | 717 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
b97bf3fd | 718 | { |
a02cec21 | 719 | return msg_bits(m, 9, 16, 0xffff) * 4; |
b97bf3fd PL |
720 | } |
721 | ||
c4307285 | 722 | static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
723 | { |
724 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); | |
725 | } | |
726 | ||
727 | static inline u32 msg_link_tolerance(struct tipc_msg *m) | |
728 | { | |
729 | return msg_bits(m, 9, 0, 0xffff); | |
730 | } | |
731 | ||
732 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) | |
733 | { | |
734 | msg_set_bits(m, 9, 0, 0xffff, n); | |
735 | } | |
736 | ||
4f1688b2 JPM |
737 | static inline u32 tipc_msg_tot_importance(struct tipc_msg *m) |
738 | { | |
739 | if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT)) | |
740 | return msg_importance(msg_get_wrapped(m)); | |
741 | return msg_importance(m); | |
742 | } | |
743 | ||
744 | static inline u32 msg_tot_origport(struct tipc_msg *m) | |
745 | { | |
746 | if ((msg_user(m) == MSG_FRAGMENTER) && (msg_type(m) == FIRST_FRAGMENT)) | |
747 | return msg_origport(msg_get_wrapped(m)); | |
748 | return msg_origport(m); | |
749 | } | |
750 | ||
859fc7c0 | 751 | struct sk_buff *tipc_buf_acquire(u32 size); |
c5898636 | 752 | bool tipc_msg_reverse(u32 own_addr, struct sk_buff *buf, u32 *dnode, |
34747539 | 753 | int err); |
c5898636 | 754 | void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type, |
34747539 | 755 | u32 hsize, u32 destnode); |
e3a77561 JPM |
756 | struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, |
757 | uint data_sz, u32 dnode, u32 onode, | |
758 | u32 dport, u32 oport, int errcode); | |
37e22164 | 759 | int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf); |
58dc55f2 | 760 | bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu); |
c5898636 | 761 | bool tipc_msg_make_bundle(struct sk_buff_head *list, |
34747539 | 762 | struct sk_buff *skb, u32 mtu, u32 dnode); |
c637c103 | 763 | bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos); |
c5898636 | 764 | int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, |
34747539 | 765 | int offset, int dsz, int mtu, struct sk_buff_head *list); |
e3a77561 JPM |
766 | bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, u32 *dnode, |
767 | int *err); | |
a6ca1094 | 768 | struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list); |
078bec82 | 769 | |
cb1b7280 JPM |
770 | /* tipc_skb_peek(): peek and reserve first buffer in list |
771 | * @list: list to be peeked in | |
772 | * Returns pointer to first buffer in list, if any | |
773 | */ | |
774 | static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list, | |
775 | spinlock_t *lock) | |
776 | { | |
777 | struct sk_buff *skb; | |
778 | ||
779 | spin_lock_bh(lock); | |
780 | skb = skb_peek(list); | |
781 | if (skb) | |
782 | skb_get(skb); | |
783 | spin_unlock_bh(lock); | |
784 | return skb; | |
785 | } | |
786 | ||
c637c103 JPM |
787 | /* tipc_skb_peek_port(): find a destination port, ignoring all destinations |
788 | * up to and including 'filter'. | |
789 | * Note: ignoring previously tried destinations minimizes the risk of | |
790 | * contention on the socket lock | |
791 | * @list: list to be peeked in | |
792 | * @filter: last destination to be ignored from search | |
793 | * Returns a destination port number, of applicable. | |
794 | */ | |
795 | static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter) | |
796 | { | |
797 | struct sk_buff *skb; | |
798 | u32 dport = 0; | |
799 | bool ignore = true; | |
800 | ||
801 | spin_lock_bh(&list->lock); | |
802 | skb_queue_walk(list, skb) { | |
803 | dport = msg_destport(buf_msg(skb)); | |
804 | if (!filter || skb_queue_is_last(list, skb)) | |
805 | break; | |
806 | if (dport == filter) | |
807 | ignore = false; | |
808 | else if (!ignore) | |
809 | break; | |
810 | } | |
811 | spin_unlock_bh(&list->lock); | |
812 | return dport; | |
813 | } | |
814 | ||
815 | /* tipc_skb_dequeue(): unlink first buffer with dest 'dport' from list | |
816 | * @list: list to be unlinked from | |
817 | * @dport: selection criteria for buffer to unlink | |
818 | */ | |
819 | static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, | |
820 | u32 dport) | |
821 | { | |
822 | struct sk_buff *_skb, *tmp, *skb = NULL; | |
823 | ||
824 | spin_lock_bh(&list->lock); | |
825 | skb_queue_walk_safe(list, _skb, tmp) { | |
826 | if (msg_destport(buf_msg(_skb)) == dport) { | |
827 | __skb_unlink(_skb, list); | |
828 | skb = _skb; | |
829 | break; | |
830 | } | |
831 | } | |
832 | spin_unlock_bh(&list->lock); | |
833 | return skb; | |
834 | } | |
835 | ||
836 | /* tipc_skb_queue_tail(): add buffer to tail of list; | |
837 | * @list: list to be appended to | |
838 | * @skb: buffer to append. Always appended | |
839 | * @dport: the destination port of the buffer | |
840 | * returns true if dport differs from previous destination | |
841 | */ | |
842 | static inline bool tipc_skb_queue_tail(struct sk_buff_head *list, | |
843 | struct sk_buff *skb, u32 dport) | |
844 | { | |
845 | struct sk_buff *_skb = NULL; | |
846 | bool rv = false; | |
847 | ||
848 | spin_lock_bh(&list->lock); | |
849 | _skb = skb_peek_tail(list); | |
850 | if (!_skb || (msg_destport(buf_msg(_skb)) != dport) || | |
851 | (skb_queue_len(list) > 32)) | |
852 | rv = true; | |
853 | __skb_queue_tail(list, skb); | |
854 | spin_unlock_bh(&list->lock); | |
855 | return rv; | |
856 | } | |
857 | ||
b97bf3fd | 858 | #endif |