Commit | Line | Data |
---|---|---|
b97bf3fd PL |
1 | /* |
2 | * net/tipc/msg.h: Include file for TIPC message header routines | |
c4307285 | 3 | * |
75da2163 | 4 | * Copyright (c) 2000-2007, 2014-2017 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> |
d999297c | 41 | #include "core.h" |
b97bf3fd | 42 | |
cc4c4353 AS |
43 | /* |
44 | * Constants and routines used to read and write TIPC payload message headers | |
45 | * | |
46 | * Note: Some items are also used with TIPC internal message headers | |
47 | */ | |
b97bf3fd | 48 | #define TIPC_VERSION 2 |
c637c103 | 49 | struct plist; |
06d82c91 | 50 | |
d265fef6 | 51 | /* |
cc4c4353 AS |
52 | * Payload message users are defined in TIPC's public API: |
53 | * - TIPC_LOW_IMPORTANCE | |
54 | * - TIPC_MEDIUM_IMPORTANCE | |
55 | * - TIPC_HIGH_IMPORTANCE | |
56 | * - TIPC_CRITICAL_IMPORTANCE | |
57 | */ | |
e3eea1eb JPM |
58 | #define TIPC_SYSTEM_IMPORTANCE 4 |
59 | ||
cc4c4353 AS |
60 | |
61 | /* | |
62 | * Payload message types | |
d265fef6 | 63 | */ |
75da2163 JM |
64 | #define TIPC_CONN_MSG 0 |
65 | #define TIPC_MCAST_MSG 1 | |
66 | #define TIPC_NAMED_MSG 2 | |
67 | #define TIPC_DIRECT_MSG 3 | |
ae236fb2 JM |
68 | #define TIPC_GRP_MEMBER_EVT 4 |
69 | #define TIPC_GRP_BCAST_MSG 5 | |
5b8dddb6 JM |
70 | #define TIPC_GRP_MCAST_MSG 6 |
71 | #define TIPC_GRP_UCAST_MSG 7 | |
d265fef6 | 72 | |
e3eea1eb JPM |
73 | /* |
74 | * Internal message users | |
75 | */ | |
76 | #define BCAST_PROTOCOL 5 | |
77 | #define MSG_BUNDLER 6 | |
78 | #define LINK_PROTOCOL 7 | |
79 | #define CONN_MANAGER 8 | |
75da2163 | 80 | #define GROUP_PROTOCOL 9 |
dff29b1a | 81 | #define TUNNEL_PROTOCOL 10 |
e3eea1eb JPM |
82 | #define NAME_DISTRIBUTOR 11 |
83 | #define MSG_FRAGMENTER 12 | |
84 | #define LINK_CONFIG 13 | |
85 | #define SOCK_WAKEUP 14 /* pseudo user */ | |
14c04493 | 86 | #define TOP_SRV 15 /* pseudo user */ |
e3eea1eb | 87 | |
cc4c4353 AS |
88 | /* |
89 | * Message header sizes | |
90 | */ | |
741d9eb7 AS |
91 | #define SHORT_H_SIZE 24 /* In-cluster basic payload message */ |
92 | #define BASIC_H_SIZE 32 /* Basic payload message */ | |
93 | #define NAMED_H_SIZE 40 /* Named payload message */ | |
94 | #define MCAST_H_SIZE 44 /* Multicast payload message */ | |
75da2163 | 95 | #define GROUP_H_SIZE 44 /* Group payload message */ |
06d82c91 AS |
96 | #define INT_H_SIZE 40 /* Internal messages */ |
97 | #define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ | |
98 | #define MAX_H_SIZE 60 /* Largest possible TIPC header size */ | |
99 | ||
b97bf3fd | 100 | #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) |
4c94cc2d | 101 | #define FB_MTU 3744 |
91e2eb56 | 102 | #define TIPC_MEDIA_INFO_OFFSET 5 |
3d749a6a | 103 | |
859fc7c0 | 104 | struct tipc_skb_cb { |
fc1b6d6d TL |
105 | union { |
106 | struct { | |
107 | struct sk_buff *tail; | |
108 | unsigned long nxt_retr; | |
109 | unsigned long retr_stamp; | |
110 | u32 bytes_read; | |
111 | u32 orig_member; | |
112 | u16 chain_imp; | |
113 | u16 ackers; | |
114 | u16 retr_cnt; | |
115 | } __packed; | |
116 | #ifdef CONFIG_TIPC_CRYPTO | |
117 | struct { | |
118 | struct tipc_crypto *rx; | |
119 | struct tipc_aead *last; | |
120 | u8 recurs; | |
121 | } tx_clone_ctx __packed; | |
122 | #endif | |
123 | } __packed; | |
124 | union { | |
125 | struct { | |
126 | u8 validated:1; | |
127 | #ifdef CONFIG_TIPC_CRYPTO | |
128 | u8 encrypted:1; | |
129 | u8 decrypted:1; | |
130 | u8 probe:1; | |
131 | u8 tx_clone_deferred:1; | |
132 | #endif | |
133 | }; | |
134 | u8 flags; | |
135 | }; | |
136 | u8 reserved; | |
137 | #ifdef CONFIG_TIPC_CRYPTO | |
138 | void *crypto_ctx; | |
139 | #endif | |
140 | } __packed; | |
859fc7c0 YX |
141 | |
142 | #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) | |
143 | ||
d265fef6 AS |
144 | struct tipc_msg { |
145 | __be32 hdr[15]; | |
146 | }; | |
c4307285 | 147 | |
9195948f TL |
148 | /* struct tipc_gap_ack - TIPC Gap ACK block |
149 | * @ack: seqno of the last consecutive packet in link deferdq | |
150 | * @gap: number of gap packets since the last ack | |
151 | * | |
152 | * E.g: | |
153 | * link deferdq: 1 2 3 4 10 11 13 14 15 20 | |
154 | * --> Gap ACK blocks: <4, 5>, <11, 1>, <15, 4>, <20, 0> | |
155 | */ | |
156 | struct tipc_gap_ack { | |
157 | __be16 ack; | |
158 | __be16 gap; | |
159 | }; | |
160 | ||
161 | /* struct tipc_gap_ack_blks | |
162 | * @len: actual length of the record | |
163 | * @gack_cnt: number of Gap ACK blocks in the record | |
164 | * @gacks: array of Gap ACK blocks | |
165 | */ | |
166 | struct tipc_gap_ack_blks { | |
167 | __be16 len; | |
168 | u8 gack_cnt; | |
169 | u8 reserved; | |
170 | struct tipc_gap_ack gacks[]; | |
171 | }; | |
172 | ||
173 | #define tipc_gap_ack_blks_sz(n) (sizeof(struct tipc_gap_ack_blks) + \ | |
174 | sizeof(struct tipc_gap_ack) * (n)) | |
175 | ||
176 | #define MAX_GAP_ACK_BLKS 32 | |
177 | #define MAX_GAP_ACK_BLKS_SZ tipc_gap_ack_blks_sz(MAX_GAP_ACK_BLKS) | |
178 | ||
859fc7c0 YX |
179 | static inline struct tipc_msg *buf_msg(struct sk_buff *skb) |
180 | { | |
181 | return (struct tipc_msg *)skb->data; | |
182 | } | |
183 | ||
d265fef6 AS |
184 | static inline u32 msg_word(struct tipc_msg *m, u32 pos) |
185 | { | |
186 | return ntohl(m->hdr[pos]); | |
187 | } | |
b97bf3fd PL |
188 | |
189 | static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) | |
190 | { | |
191 | m->hdr[w] = htonl(val); | |
192 | } | |
193 | ||
d265fef6 AS |
194 | static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask) |
195 | { | |
196 | return (msg_word(m, w) >> pos) & mask; | |
197 | } | |
198 | ||
b97bf3fd PL |
199 | static inline void msg_set_bits(struct tipc_msg *m, u32 w, |
200 | u32 pos, u32 mask, u32 val) | |
201 | { | |
1f9eda7e | 202 | val = (val & mask) << pos; |
becf3da2 AV |
203 | mask = mask << pos; |
204 | m->hdr[w] &= ~htonl(mask); | |
205 | m->hdr[w] |= htonl(val); | |
b97bf3fd PL |
206 | } |
207 | ||
40aecb1b AS |
208 | static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) |
209 | { | |
210 | u32 temp = msg->hdr[a]; | |
211 | ||
212 | msg->hdr[a] = msg->hdr[b]; | |
213 | msg->hdr[b] = temp; | |
214 | } | |
215 | ||
c4307285 | 216 | /* |
b97bf3fd PL |
217 | * Word 0 |
218 | */ | |
b97bf3fd PL |
219 | static inline u32 msg_version(struct tipc_msg *m) |
220 | { | |
221 | return msg_bits(m, 0, 29, 7); | |
222 | } | |
223 | ||
c4307285 | 224 | static inline void msg_set_version(struct tipc_msg *m) |
b97bf3fd | 225 | { |
37695420 | 226 | msg_set_bits(m, 0, 29, 7, TIPC_VERSION); |
b97bf3fd PL |
227 | } |
228 | ||
229 | static inline u32 msg_user(struct tipc_msg *m) | |
230 | { | |
231 | return msg_bits(m, 0, 25, 0xf); | |
232 | } | |
233 | ||
234 | static inline u32 msg_isdata(struct tipc_msg *m) | |
235 | { | |
a02cec21 | 236 | return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; |
b97bf3fd PL |
237 | } |
238 | ||
c4307285 | 239 | static inline void msg_set_user(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
240 | { |
241 | msg_set_bits(m, 0, 25, 0xf, n); | |
242 | } | |
243 | ||
d265fef6 AS |
244 | static inline u32 msg_hdr_sz(struct tipc_msg *m) |
245 | { | |
246 | return msg_bits(m, 0, 21, 0xf) << 2; | |
247 | } | |
248 | ||
0e65967e | 249 | static inline void msg_set_hdr_sz(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
250 | { |
251 | msg_set_bits(m, 0, 21, 0xf, n>>2); | |
252 | } | |
253 | ||
d265fef6 AS |
254 | static inline u32 msg_size(struct tipc_msg *m) |
255 | { | |
256 | return msg_bits(m, 0, 0, 0x1ffff); | |
257 | } | |
258 | ||
5b8dddb6 JM |
259 | static inline u32 msg_blocks(struct tipc_msg *m) |
260 | { | |
261 | return (msg_size(m) / 1024) + 1; | |
262 | } | |
263 | ||
d265fef6 AS |
264 | static inline u32 msg_data_sz(struct tipc_msg *m) |
265 | { | |
266 | return msg_size(m) - msg_hdr_sz(m); | |
267 | } | |
268 | ||
c4307285 | 269 | static inline int msg_non_seq(struct tipc_msg *m) |
b97bf3fd PL |
270 | { |
271 | return msg_bits(m, 0, 20, 1); | |
272 | } | |
273 | ||
40aecb1b | 274 | static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) |
b97bf3fd | 275 | { |
40aecb1b | 276 | msg_set_bits(m, 0, 20, 1, n); |
b97bf3fd PL |
277 | } |
278 | ||
25b9221b JM |
279 | static inline int msg_is_syn(struct tipc_msg *m) |
280 | { | |
281 | return msg_bits(m, 0, 17, 1); | |
282 | } | |
283 | ||
284 | static inline void msg_set_syn(struct tipc_msg *m, u32 d) | |
285 | { | |
286 | msg_set_bits(m, 0, 17, 1, d); | |
287 | } | |
288 | ||
c4307285 | 289 | static inline int msg_dest_droppable(struct tipc_msg *m) |
b97bf3fd PL |
290 | { |
291 | return msg_bits(m, 0, 19, 1); | |
292 | } | |
293 | ||
c4307285 | 294 | static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
295 | { |
296 | msg_set_bits(m, 0, 19, 1, d); | |
297 | } | |
298 | ||
8d6e79d3 JM |
299 | static inline int msg_is_keepalive(struct tipc_msg *m) |
300 | { | |
301 | return msg_bits(m, 0, 19, 1); | |
302 | } | |
303 | ||
304 | static inline void msg_set_is_keepalive(struct tipc_msg *m, u32 d) | |
305 | { | |
306 | msg_set_bits(m, 0, 19, 1, d); | |
307 | } | |
308 | ||
c4307285 | 309 | static inline int msg_src_droppable(struct tipc_msg *m) |
b97bf3fd PL |
310 | { |
311 | return msg_bits(m, 0, 18, 1); | |
312 | } | |
313 | ||
c4307285 | 314 | static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) |
b97bf3fd PL |
315 | { |
316 | msg_set_bits(m, 0, 18, 1, d); | |
317 | } | |
318 | ||
c0bceb97 JM |
319 | static inline int msg_ack_required(struct tipc_msg *m) |
320 | { | |
321 | return msg_bits(m, 0, 18, 1); | |
322 | } | |
323 | ||
324 | static inline void msg_set_ack_required(struct tipc_msg *m, u32 d) | |
325 | { | |
326 | msg_set_bits(m, 0, 18, 1, d); | |
327 | } | |
328 | ||
c55c8eda HL |
329 | static inline bool msg_is_rcast(struct tipc_msg *m) |
330 | { | |
331 | return msg_bits(m, 0, 18, 0x1); | |
332 | } | |
333 | ||
334 | static inline void msg_set_is_rcast(struct tipc_msg *m, bool d) | |
335 | { | |
336 | msg_set_bits(m, 0, 18, 0x1, d); | |
337 | } | |
338 | ||
b97bf3fd PL |
339 | static inline void msg_set_size(struct tipc_msg *m, u32 sz) |
340 | { | |
341 | m->hdr[0] = htonl((msg_word(m, 0) & ~0x1ffff) | sz); | |
342 | } | |
343 | ||
3127a020 JPM |
344 | static inline unchar *msg_data(struct tipc_msg *m) |
345 | { | |
346 | return ((unchar *)m) + msg_hdr_sz(m); | |
347 | } | |
348 | ||
a7dc51ad | 349 | static inline struct tipc_msg *msg_inner_hdr(struct tipc_msg *m) |
3127a020 JPM |
350 | { |
351 | return (struct tipc_msg *)msg_data(m); | |
352 | } | |
b97bf3fd | 353 | |
c4307285 | 354 | /* |
b97bf3fd PL |
355 | * Word 1 |
356 | */ | |
d265fef6 AS |
357 | static inline u32 msg_type(struct tipc_msg *m) |
358 | { | |
359 | return msg_bits(m, 1, 29, 0x7); | |
360 | } | |
361 | ||
c4307285 | 362 | static inline void msg_set_type(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
363 | { |
364 | msg_set_bits(m, 1, 29, 0x7, n); | |
365 | } | |
366 | ||
75da2163 JM |
367 | static inline int msg_in_group(struct tipc_msg *m) |
368 | { | |
ae236fb2 JM |
369 | int mtyp = msg_type(m); |
370 | ||
27bd9ec0 | 371 | return mtyp >= TIPC_GRP_MEMBER_EVT && mtyp <= TIPC_GRP_UCAST_MSG; |
ae236fb2 JM |
372 | } |
373 | ||
374 | static inline bool msg_is_grp_evt(struct tipc_msg *m) | |
375 | { | |
376 | return msg_type(m) == TIPC_GRP_MEMBER_EVT; | |
75da2163 JM |
377 | } |
378 | ||
d265fef6 AS |
379 | static inline u32 msg_named(struct tipc_msg *m) |
380 | { | |
381 | return msg_type(m) == TIPC_NAMED_MSG; | |
382 | } | |
383 | ||
384 | static inline u32 msg_mcast(struct tipc_msg *m) | |
385 | { | |
75da2163 JM |
386 | int mtyp = msg_type(m); |
387 | ||
5b8dddb6 JM |
388 | return ((mtyp == TIPC_MCAST_MSG) || (mtyp == TIPC_GRP_BCAST_MSG) || |
389 | (mtyp == TIPC_GRP_MCAST_MSG)); | |
d265fef6 AS |
390 | } |
391 | ||
392 | static inline u32 msg_connected(struct tipc_msg *m) | |
393 | { | |
394 | return msg_type(m) == TIPC_CONN_MSG; | |
395 | } | |
396 | ||
397 | static inline u32 msg_errcode(struct tipc_msg *m) | |
398 | { | |
399 | return msg_bits(m, 1, 25, 0xf); | |
400 | } | |
401 | ||
c4307285 | 402 | static inline void msg_set_errcode(struct tipc_msg *m, u32 err) |
b97bf3fd PL |
403 | { |
404 | msg_set_bits(m, 1, 25, 0xf, err); | |
405 | } | |
406 | ||
c4307285 | 407 | static inline u32 msg_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
408 | { |
409 | return msg_bits(m, 1, 21, 0xf); | |
410 | } | |
411 | ||
c4307285 | 412 | static inline void msg_incr_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
413 | { |
414 | msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); | |
415 | } | |
416 | ||
c4307285 | 417 | static inline void msg_reset_reroute_cnt(struct tipc_msg *m) |
b97bf3fd PL |
418 | { |
419 | msg_set_bits(m, 1, 21, 0xf, 0); | |
420 | } | |
421 | ||
422 | static inline u32 msg_lookup_scope(struct tipc_msg *m) | |
423 | { | |
424 | return msg_bits(m, 1, 19, 0x3); | |
425 | } | |
426 | ||
c4307285 | 427 | static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
428 | { |
429 | msg_set_bits(m, 1, 19, 0x3, n); | |
430 | } | |
431 | ||
e4bf4f76 | 432 | static inline u16 msg_bcast_ack(struct tipc_msg *m) |
b97bf3fd PL |
433 | { |
434 | return msg_bits(m, 1, 0, 0xffff); | |
435 | } | |
436 | ||
e4bf4f76 | 437 | static inline void msg_set_bcast_ack(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
438 | { |
439 | msg_set_bits(m, 1, 0, 0xffff, n); | |
440 | } | |
441 | ||
91986ee1 TL |
442 | /* Note: reusing bits in word 1 for ACTIVATE_MSG only, to re-synch |
443 | * link peer session number | |
444 | */ | |
445 | static inline bool msg_dest_session_valid(struct tipc_msg *m) | |
446 | { | |
447 | return msg_bits(m, 1, 16, 0x1); | |
448 | } | |
449 | ||
450 | static inline void msg_set_dest_session_valid(struct tipc_msg *m, bool valid) | |
451 | { | |
452 | msg_set_bits(m, 1, 16, 0x1, valid); | |
453 | } | |
454 | ||
455 | static inline u16 msg_dest_session(struct tipc_msg *m) | |
456 | { | |
457 | return msg_bits(m, 1, 0, 0xffff); | |
458 | } | |
459 | ||
460 | static inline void msg_set_dest_session(struct tipc_msg *m, u16 n) | |
461 | { | |
462 | msg_set_bits(m, 1, 0, 0xffff, n); | |
463 | } | |
b97bf3fd | 464 | |
c4307285 | 465 | /* |
b97bf3fd PL |
466 | * Word 2 |
467 | */ | |
e4bf4f76 | 468 | static inline u16 msg_ack(struct tipc_msg *m) |
b97bf3fd PL |
469 | { |
470 | return msg_bits(m, 2, 16, 0xffff); | |
471 | } | |
472 | ||
e4bf4f76 | 473 | static inline void msg_set_ack(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
474 | { |
475 | msg_set_bits(m, 2, 16, 0xffff, n); | |
476 | } | |
477 | ||
e4bf4f76 | 478 | static inline u16 msg_seqno(struct tipc_msg *m) |
b97bf3fd PL |
479 | { |
480 | return msg_bits(m, 2, 0, 0xffff); | |
481 | } | |
482 | ||
e4bf4f76 | 483 | static inline void msg_set_seqno(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
484 | { |
485 | msg_set_bits(m, 2, 0, 0xffff, n); | |
486 | } | |
487 | ||
c4307285 | 488 | /* |
b97bf3fd PL |
489 | * Words 3-10 |
490 | */ | |
e3eea1eb JPM |
491 | static inline u32 msg_importance(struct tipc_msg *m) |
492 | { | |
f21e897e JPM |
493 | int usr = msg_user(m); |
494 | ||
495 | if (likely((usr <= TIPC_CRITICAL_IMPORTANCE) && !msg_errcode(m))) | |
496 | return usr; | |
497 | if ((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER)) | |
dde4b5ae | 498 | return msg_bits(m, 9, 0, 0x7); |
e3eea1eb JPM |
499 | return TIPC_SYSTEM_IMPORTANCE; |
500 | } | |
501 | ||
502 | static inline void msg_set_importance(struct tipc_msg *m, u32 i) | |
503 | { | |
f21e897e JPM |
504 | int usr = msg_user(m); |
505 | ||
506 | if (likely((usr == MSG_FRAGMENTER) || (usr == MSG_BUNDLER))) | |
dde4b5ae | 507 | msg_set_bits(m, 9, 0, 0x7, i); |
f21e897e | 508 | else if (i < TIPC_SYSTEM_IMPORTANCE) |
e3eea1eb JPM |
509 | msg_set_user(m, i); |
510 | else | |
511 | pr_warn("Trying to set illegal importance in message\n"); | |
512 | } | |
513 | ||
d265fef6 AS |
514 | static inline u32 msg_prevnode(struct tipc_msg *m) |
515 | { | |
516 | return msg_word(m, 3); | |
517 | } | |
518 | ||
c4307285 | 519 | static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
520 | { |
521 | msg_set_word(m, 3, a); | |
522 | } | |
523 | ||
d265fef6 AS |
524 | static inline u32 msg_origport(struct tipc_msg *m) |
525 | { | |
3127a020 | 526 | if (msg_user(m) == MSG_FRAGMENTER) |
a7dc51ad | 527 | m = msg_inner_hdr(m); |
d265fef6 AS |
528 | return msg_word(m, 4); |
529 | } | |
530 | ||
c4307285 | 531 | static inline void msg_set_origport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
532 | { |
533 | msg_set_word(m, 4, p); | |
534 | } | |
535 | ||
d265fef6 AS |
536 | static inline u32 msg_destport(struct tipc_msg *m) |
537 | { | |
538 | return msg_word(m, 5); | |
539 | } | |
540 | ||
c4307285 | 541 | static inline void msg_set_destport(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
542 | { |
543 | msg_set_word(m, 5, p); | |
544 | } | |
545 | ||
d265fef6 AS |
546 | static inline u32 msg_mc_netid(struct tipc_msg *m) |
547 | { | |
548 | return msg_word(m, 5); | |
549 | } | |
550 | ||
c4307285 | 551 | static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) |
b97bf3fd PL |
552 | { |
553 | msg_set_word(m, 5, p); | |
554 | } | |
555 | ||
d265fef6 AS |
556 | static inline int msg_short(struct tipc_msg *m) |
557 | { | |
741d9eb7 | 558 | return msg_hdr_sz(m) == SHORT_H_SIZE; |
d265fef6 AS |
559 | } |
560 | ||
561 | static inline u32 msg_orignode(struct tipc_msg *m) | |
562 | { | |
563 | if (likely(msg_short(m))) | |
564 | return msg_prevnode(m); | |
565 | return msg_word(m, 6); | |
566 | } | |
567 | ||
c4307285 | 568 | static inline void msg_set_orignode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
569 | { |
570 | msg_set_word(m, 6, a); | |
571 | } | |
572 | ||
d265fef6 AS |
573 | static inline u32 msg_destnode(struct tipc_msg *m) |
574 | { | |
575 | return msg_word(m, 7); | |
576 | } | |
577 | ||
c4307285 | 578 | static inline void msg_set_destnode(struct tipc_msg *m, u32 a) |
b97bf3fd PL |
579 | { |
580 | msg_set_word(m, 7, a); | |
581 | } | |
582 | ||
d265fef6 AS |
583 | static inline u32 msg_nametype(struct tipc_msg *m) |
584 | { | |
585 | return msg_word(m, 8); | |
586 | } | |
587 | ||
c4307285 | 588 | static inline void msg_set_nametype(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
589 | { |
590 | msg_set_word(m, 8, n); | |
591 | } | |
592 | ||
d265fef6 AS |
593 | static inline u32 msg_nameinst(struct tipc_msg *m) |
594 | { | |
595 | return msg_word(m, 9); | |
596 | } | |
597 | ||
598 | static inline u32 msg_namelower(struct tipc_msg *m) | |
599 | { | |
600 | return msg_nameinst(m); | |
601 | } | |
602 | ||
c4307285 | 603 | static inline void msg_set_namelower(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
604 | { |
605 | msg_set_word(m, 9, n); | |
606 | } | |
607 | ||
c4307285 | 608 | static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
609 | { |
610 | msg_set_namelower(m, n); | |
611 | } | |
612 | ||
d265fef6 AS |
613 | static inline u32 msg_nameupper(struct tipc_msg *m) |
614 | { | |
615 | return msg_word(m, 10); | |
616 | } | |
617 | ||
c4307285 | 618 | static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
619 | { |
620 | msg_set_word(m, 10, n); | |
621 | } | |
622 | ||
b97bf3fd | 623 | /* |
cc4c4353 AS |
624 | * Constants and routines used to read and write TIPC internal message headers |
625 | */ | |
b97bf3fd | 626 | |
c4307285 | 627 | /* |
cc4c4353 | 628 | * Connection management protocol message types |
b97bf3fd | 629 | */ |
b97bf3fd PL |
630 | #define CONN_PROBE 0 |
631 | #define CONN_PROBE_REPLY 1 | |
632 | #define CONN_ACK 2 | |
633 | ||
c4307285 | 634 | /* |
cc4c4353 | 635 | * Name distributor message types |
b97bf3fd | 636 | */ |
b97bf3fd PL |
637 | #define PUBLICATION 0 |
638 | #define WITHDRAWAL 1 | |
639 | ||
92138d1f AS |
640 | /* |
641 | * Segmentation message types | |
642 | */ | |
92138d1f AS |
643 | #define FIRST_FRAGMENT 0 |
644 | #define FRAGMENT 1 | |
645 | #define LAST_FRAGMENT 2 | |
646 | ||
647 | /* | |
648 | * Link management protocol message types | |
649 | */ | |
92138d1f AS |
650 | #define STATE_MSG 0 |
651 | #define RESET_MSG 1 | |
652 | #define ACTIVATE_MSG 2 | |
653 | ||
654 | /* | |
655 | * Changeover tunnel message types | |
656 | */ | |
dff29b1a JPM |
657 | #define SYNCH_MSG 0 |
658 | #define FAILOVER_MSG 1 | |
92138d1f AS |
659 | |
660 | /* | |
661 | * Config protocol message types | |
662 | */ | |
92138d1f AS |
663 | #define DSC_REQ_MSG 0 |
664 | #define DSC_RESP_MSG 1 | |
25b0b9c4 JM |
665 | #define DSC_TRIAL_MSG 2 |
666 | #define DSC_TRIAL_FAIL_MSG 3 | |
92138d1f | 667 | |
75da2163 JM |
668 | /* |
669 | * Group protocol message types | |
670 | */ | |
671 | #define GRP_JOIN_MSG 0 | |
672 | #define GRP_LEAVE_MSG 1 | |
b7d42635 | 673 | #define GRP_ADV_MSG 2 |
2f487712 | 674 | #define GRP_ACK_MSG 3 |
04d7b574 JM |
675 | #define GRP_RECLAIM_MSG 4 |
676 | #define GRP_REMIT_MSG 5 | |
75da2163 | 677 | |
c4307285 | 678 | /* |
b97bf3fd PL |
679 | * Word 1 |
680 | */ | |
b97bf3fd PL |
681 | static inline u32 msg_seq_gap(struct tipc_msg *m) |
682 | { | |
bd784533 | 683 | return msg_bits(m, 1, 16, 0x1fff); |
b97bf3fd PL |
684 | } |
685 | ||
686 | static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) | |
687 | { | |
bd784533 | 688 | msg_set_bits(m, 1, 16, 0x1fff, n); |
b97bf3fd PL |
689 | } |
690 | ||
fc0eea69 AS |
691 | static inline u32 msg_node_sig(struct tipc_msg *m) |
692 | { | |
693 | return msg_bits(m, 1, 0, 0xffff); | |
694 | } | |
695 | ||
696 | static inline void msg_set_node_sig(struct tipc_msg *m, u32 n) | |
697 | { | |
698 | msg_set_bits(m, 1, 0, 0xffff, n); | |
699 | } | |
700 | ||
7764d6e8 JPM |
701 | static inline u32 msg_node_capabilities(struct tipc_msg *m) |
702 | { | |
703 | return msg_bits(m, 1, 15, 0x1fff); | |
704 | } | |
705 | ||
706 | static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n) | |
707 | { | |
708 | msg_set_bits(m, 1, 15, 0x1fff, n); | |
709 | } | |
710 | ||
c4307285 | 711 | /* |
b97bf3fd PL |
712 | * Word 2 |
713 | */ | |
b97bf3fd PL |
714 | static inline u32 msg_dest_domain(struct tipc_msg *m) |
715 | { | |
716 | return msg_word(m, 2); | |
717 | } | |
718 | ||
c4307285 | 719 | static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
720 | { |
721 | msg_set_word(m, 2, n); | |
722 | } | |
723 | ||
724 | static inline u32 msg_bcgap_after(struct tipc_msg *m) | |
725 | { | |
726 | return msg_bits(m, 2, 16, 0xffff); | |
727 | } | |
728 | ||
729 | static inline void msg_set_bcgap_after(struct tipc_msg *m, u32 n) | |
730 | { | |
731 | msg_set_bits(m, 2, 16, 0xffff, n); | |
732 | } | |
733 | ||
734 | static inline u32 msg_bcgap_to(struct tipc_msg *m) | |
735 | { | |
736 | return msg_bits(m, 2, 0, 0xffff); | |
737 | } | |
738 | ||
c4307285 | 739 | static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
740 | { |
741 | msg_set_bits(m, 2, 0, 0xffff, n); | |
742 | } | |
743 | ||
c4307285 | 744 | /* |
b97bf3fd PL |
745 | * Word 4 |
746 | */ | |
b97bf3fd PL |
747 | static inline u32 msg_last_bcast(struct tipc_msg *m) |
748 | { | |
749 | return msg_bits(m, 4, 16, 0xffff); | |
750 | } | |
751 | ||
52666986 JPM |
752 | static inline u32 msg_bc_snd_nxt(struct tipc_msg *m) |
753 | { | |
754 | return msg_last_bcast(m) + 1; | |
755 | } | |
756 | ||
b97bf3fd PL |
757 | static inline void msg_set_last_bcast(struct tipc_msg *m, u32 n) |
758 | { | |
759 | msg_set_bits(m, 4, 16, 0xffff, n); | |
760 | } | |
761 | ||
2320bcda TL |
762 | static inline u32 msg_nof_fragms(struct tipc_msg *m) |
763 | { | |
764 | return msg_bits(m, 4, 0, 0xffff); | |
765 | } | |
766 | ||
767 | static inline void msg_set_nof_fragms(struct tipc_msg *m, u32 n) | |
768 | { | |
769 | msg_set_bits(m, 4, 0, 0xffff, n); | |
770 | } | |
771 | ||
772 | static inline u32 msg_fragm_no(struct tipc_msg *m) | |
773 | { | |
774 | return msg_bits(m, 4, 16, 0xffff); | |
775 | } | |
776 | ||
b97bf3fd PL |
777 | static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) |
778 | { | |
779 | msg_set_bits(m, 4, 16, 0xffff, n); | |
780 | } | |
781 | ||
6e498158 | 782 | static inline u16 msg_next_sent(struct tipc_msg *m) |
b97bf3fd PL |
783 | { |
784 | return msg_bits(m, 4, 0, 0xffff); | |
785 | } | |
786 | ||
6e498158 | 787 | static inline void msg_set_next_sent(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
788 | { |
789 | msg_set_bits(m, 4, 0, 0xffff, n); | |
790 | } | |
791 | ||
b97bf3fd PL |
792 | static inline void msg_set_long_msgno(struct tipc_msg *m, u32 n) |
793 | { | |
794 | msg_set_bits(m, 4, 0, 0xffff, n); | |
795 | } | |
796 | ||
797 | static inline u32 msg_bc_netid(struct tipc_msg *m) | |
798 | { | |
799 | return msg_word(m, 4); | |
800 | } | |
801 | ||
802 | static inline void msg_set_bc_netid(struct tipc_msg *m, u32 id) | |
803 | { | |
804 | msg_set_word(m, 4, id); | |
805 | } | |
806 | ||
807 | static inline u32 msg_link_selector(struct tipc_msg *m) | |
808 | { | |
a853e4c6 JPM |
809 | if (msg_user(m) == MSG_FRAGMENTER) |
810 | m = (void *)msg_data(m); | |
b97bf3fd PL |
811 | return msg_bits(m, 4, 0, 1); |
812 | } | |
813 | ||
c4307285 | 814 | /* |
b97bf3fd PL |
815 | * Word 5 |
816 | */ | |
d999297c | 817 | static inline u16 msg_session(struct tipc_msg *m) |
b97bf3fd PL |
818 | { |
819 | return msg_bits(m, 5, 16, 0xffff); | |
820 | } | |
821 | ||
d999297c | 822 | static inline void msg_set_session(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
823 | { |
824 | msg_set_bits(m, 5, 16, 0xffff, n); | |
825 | } | |
826 | ||
827 | static inline u32 msg_probe(struct tipc_msg *m) | |
828 | { | |
829 | return msg_bits(m, 5, 0, 1); | |
830 | } | |
831 | ||
832 | static inline void msg_set_probe(struct tipc_msg *m, u32 val) | |
833 | { | |
7eb878ed | 834 | msg_set_bits(m, 5, 0, 1, val); |
b97bf3fd PL |
835 | } |
836 | ||
837 | static inline char msg_net_plane(struct tipc_msg *m) | |
838 | { | |
839 | return msg_bits(m, 5, 1, 7) + 'A'; | |
840 | } | |
841 | ||
842 | static inline void msg_set_net_plane(struct tipc_msg *m, char n) | |
843 | { | |
844 | msg_set_bits(m, 5, 1, 7, (n - 'A')); | |
845 | } | |
846 | ||
847 | static inline u32 msg_linkprio(struct tipc_msg *m) | |
848 | { | |
849 | return msg_bits(m, 5, 4, 0x1f); | |
850 | } | |
851 | ||
852 | static inline void msg_set_linkprio(struct tipc_msg *m, u32 n) | |
853 | { | |
854 | msg_set_bits(m, 5, 4, 0x1f, n); | |
855 | } | |
856 | ||
857 | static inline u32 msg_bearer_id(struct tipc_msg *m) | |
858 | { | |
859 | return msg_bits(m, 5, 9, 0x7); | |
860 | } | |
861 | ||
862 | static inline void msg_set_bearer_id(struct tipc_msg *m, u32 n) | |
863 | { | |
864 | msg_set_bits(m, 5, 9, 0x7, n); | |
865 | } | |
866 | ||
867 | static inline u32 msg_redundant_link(struct tipc_msg *m) | |
868 | { | |
869 | return msg_bits(m, 5, 12, 0x1); | |
870 | } | |
871 | ||
77f167fc | 872 | static inline void msg_set_redundant_link(struct tipc_msg *m, u32 r) |
b97bf3fd | 873 | { |
77f167fc | 874 | msg_set_bits(m, 5, 12, 0x1, r); |
b97bf3fd PL |
875 | } |
876 | ||
634696b1 JPM |
877 | static inline u32 msg_peer_stopping(struct tipc_msg *m) |
878 | { | |
879 | return msg_bits(m, 5, 13, 0x1); | |
880 | } | |
881 | ||
882 | static inline void msg_set_peer_stopping(struct tipc_msg *m, u32 s) | |
883 | { | |
884 | msg_set_bits(m, 5, 13, 0x1, s); | |
885 | } | |
886 | ||
06bd2b1e JPM |
887 | static inline bool msg_bc_ack_invalid(struct tipc_msg *m) |
888 | { | |
889 | switch (msg_user(m)) { | |
890 | case BCAST_PROTOCOL: | |
891 | case NAME_DISTRIBUTOR: | |
892 | case LINK_PROTOCOL: | |
893 | return msg_bits(m, 5, 14, 0x1); | |
894 | default: | |
895 | return false; | |
896 | } | |
897 | } | |
898 | ||
899 | static inline void msg_set_bc_ack_invalid(struct tipc_msg *m, bool invalid) | |
900 | { | |
901 | msg_set_bits(m, 5, 14, 0x1, invalid); | |
902 | } | |
903 | ||
3d749a6a AS |
904 | static inline char *msg_media_addr(struct tipc_msg *m) |
905 | { | |
91e2eb56 | 906 | return (char *)&m->hdr[TIPC_MEDIA_INFO_OFFSET]; |
3d749a6a | 907 | } |
b97bf3fd | 908 | |
02d11ca2 JPM |
909 | static inline u32 msg_bc_gap(struct tipc_msg *m) |
910 | { | |
911 | return msg_bits(m, 8, 0, 0x3ff); | |
912 | } | |
913 | ||
914 | static inline void msg_set_bc_gap(struct tipc_msg *m, u32 n) | |
915 | { | |
916 | msg_set_bits(m, 8, 0, 0x3ff, n); | |
917 | } | |
918 | ||
c4307285 | 919 | /* |
b97bf3fd PL |
920 | * Word 9 |
921 | */ | |
6e498158 | 922 | static inline u16 msg_msgcnt(struct tipc_msg *m) |
b97bf3fd PL |
923 | { |
924 | return msg_bits(m, 9, 16, 0xffff); | |
925 | } | |
926 | ||
6e498158 | 927 | static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n) |
b97bf3fd PL |
928 | { |
929 | msg_set_bits(m, 9, 16, 0xffff, n); | |
930 | } | |
931 | ||
4929a932 TL |
932 | static inline u16 msg_syncpt(struct tipc_msg *m) |
933 | { | |
934 | return msg_bits(m, 9, 16, 0xffff); | |
935 | } | |
936 | ||
937 | static inline void msg_set_syncpt(struct tipc_msg *m, u16 n) | |
938 | { | |
939 | msg_set_bits(m, 9, 16, 0xffff, n); | |
940 | } | |
941 | ||
10724cc7 | 942 | static inline u32 msg_conn_ack(struct tipc_msg *m) |
b97bf3fd PL |
943 | { |
944 | return msg_bits(m, 9, 16, 0xffff); | |
945 | } | |
946 | ||
10724cc7 | 947 | static inline void msg_set_conn_ack(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
948 | { |
949 | msg_set_bits(m, 9, 16, 0xffff, n); | |
950 | } | |
951 | ||
b7d42635 | 952 | static inline u16 msg_adv_win(struct tipc_msg *m) |
10724cc7 JPM |
953 | { |
954 | return msg_bits(m, 9, 0, 0xffff); | |
955 | } | |
956 | ||
b7d42635 | 957 | static inline void msg_set_adv_win(struct tipc_msg *m, u16 n) |
10724cc7 JPM |
958 | { |
959 | msg_set_bits(m, 9, 0, 0xffff, n); | |
960 | } | |
961 | ||
c4307285 | 962 | static inline u32 msg_max_pkt(struct tipc_msg *m) |
b97bf3fd | 963 | { |
a02cec21 | 964 | return msg_bits(m, 9, 16, 0xffff) * 4; |
b97bf3fd PL |
965 | } |
966 | ||
c4307285 | 967 | static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) |
b97bf3fd PL |
968 | { |
969 | msg_set_bits(m, 9, 16, 0xffff, (n / 4)); | |
970 | } | |
971 | ||
972 | static inline u32 msg_link_tolerance(struct tipc_msg *m) | |
973 | { | |
974 | return msg_bits(m, 9, 0, 0xffff); | |
975 | } | |
976 | ||
977 | static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) | |
978 | { | |
979 | msg_set_bits(m, 9, 0, 0xffff, n); | |
980 | } | |
981 | ||
75da2163 JM |
982 | static inline u16 msg_grp_bc_syncpt(struct tipc_msg *m) |
983 | { | |
984 | return msg_bits(m, 9, 16, 0xffff); | |
985 | } | |
986 | ||
987 | static inline void msg_set_grp_bc_syncpt(struct tipc_msg *m, u16 n) | |
988 | { | |
989 | msg_set_bits(m, 9, 16, 0xffff, n); | |
990 | } | |
991 | ||
2f487712 JM |
992 | static inline u16 msg_grp_bc_acked(struct tipc_msg *m) |
993 | { | |
994 | return msg_bits(m, 9, 16, 0xffff); | |
995 | } | |
996 | ||
997 | static inline void msg_set_grp_bc_acked(struct tipc_msg *m, u16 n) | |
998 | { | |
999 | msg_set_bits(m, 9, 16, 0xffff, n); | |
1000 | } | |
1001 | ||
04d7b574 JM |
1002 | static inline u16 msg_grp_remitted(struct tipc_msg *m) |
1003 | { | |
1004 | return msg_bits(m, 9, 16, 0xffff); | |
1005 | } | |
1006 | ||
1007 | static inline void msg_set_grp_remitted(struct tipc_msg *m, u16 n) | |
1008 | { | |
1009 | msg_set_bits(m, 9, 16, 0xffff, n); | |
1010 | } | |
1011 | ||
75da2163 JM |
1012 | /* Word 10 |
1013 | */ | |
ae236fb2 JM |
1014 | static inline u16 msg_grp_evt(struct tipc_msg *m) |
1015 | { | |
1016 | return msg_bits(m, 10, 0, 0x3); | |
1017 | } | |
1018 | ||
1019 | static inline void msg_set_grp_evt(struct tipc_msg *m, int n) | |
1020 | { | |
1021 | msg_set_bits(m, 10, 0, 0x3, n); | |
1022 | } | |
1023 | ||
2f487712 JM |
1024 | static inline u16 msg_grp_bc_ack_req(struct tipc_msg *m) |
1025 | { | |
1026 | return msg_bits(m, 10, 0, 0x1); | |
1027 | } | |
1028 | ||
1029 | static inline void msg_set_grp_bc_ack_req(struct tipc_msg *m, bool n) | |
1030 | { | |
1031 | msg_set_bits(m, 10, 0, 0x1, n); | |
1032 | } | |
1033 | ||
75da2163 JM |
1034 | static inline u16 msg_grp_bc_seqno(struct tipc_msg *m) |
1035 | { | |
1036 | return msg_bits(m, 10, 16, 0xffff); | |
1037 | } | |
1038 | ||
1039 | static inline void msg_set_grp_bc_seqno(struct tipc_msg *m, u32 n) | |
1040 | { | |
1041 | msg_set_bits(m, 10, 16, 0xffff, n); | |
1042 | } | |
1043 | ||
6e498158 | 1044 | static inline bool msg_peer_link_is_up(struct tipc_msg *m) |
1a20cc25 | 1045 | { |
d999297c | 1046 | if (likely(msg_user(m) != LINK_PROTOCOL)) |
1a20cc25 | 1047 | return true; |
6e498158 JPM |
1048 | if (msg_type(m) == STATE_MSG) |
1049 | return true; | |
1050 | return false; | |
d999297c JPM |
1051 | } |
1052 | ||
6e498158 | 1053 | static inline bool msg_peer_node_is_up(struct tipc_msg *m) |
d999297c | 1054 | { |
6e498158 JPM |
1055 | if (msg_peer_link_is_up(m)) |
1056 | return true; | |
1a20cc25 JPM |
1057 | return msg_redundant_link(m); |
1058 | } | |
1059 | ||
5b7066c3 JPM |
1060 | static inline bool msg_is_reset(struct tipc_msg *hdr) |
1061 | { | |
1062 | return (msg_user(hdr) == LINK_PROTOCOL) && (msg_type(hdr) == RESET_MSG); | |
1063 | } | |
1064 | ||
f73b1281 HL |
1065 | /* Word 13 |
1066 | */ | |
1067 | static inline void msg_set_peer_net_hash(struct tipc_msg *m, u32 n) | |
1068 | { | |
1069 | msg_set_word(m, 13, n); | |
1070 | } | |
1071 | ||
1072 | static inline u32 msg_peer_net_hash(struct tipc_msg *m) | |
1073 | { | |
1074 | return msg_word(m, 13); | |
1075 | } | |
1076 | ||
1077 | /* Word 14 | |
1078 | */ | |
25b0b9c4 JM |
1079 | static inline u32 msg_sugg_node_addr(struct tipc_msg *m) |
1080 | { | |
1081 | return msg_word(m, 14); | |
1082 | } | |
1083 | ||
1084 | static inline void msg_set_sugg_node_addr(struct tipc_msg *m, u32 n) | |
1085 | { | |
1086 | msg_set_word(m, 14, n); | |
1087 | } | |
1088 | ||
1089 | static inline void msg_set_node_id(struct tipc_msg *hdr, u8 *id) | |
1090 | { | |
1091 | memcpy(msg_data(hdr), id, 16); | |
1092 | } | |
1093 | ||
1094 | static inline u8 *msg_node_id(struct tipc_msg *hdr) | |
1095 | { | |
1096 | return (u8 *)msg_data(hdr); | |
1097 | } | |
1098 | ||
57d5f64d | 1099 | struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp); |
d618d09a | 1100 | bool tipc_msg_validate(struct sk_buff **_skb); |
bcd3ffd4 | 1101 | bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err); |
64ac5f59 JM |
1102 | void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb, |
1103 | struct sk_buff_head *xmitq); | |
c5898636 | 1104 | void tipc_msg_init(u32 own_addr, struct tipc_msg *m, u32 user, u32 type, |
34747539 | 1105 | u32 hsize, u32 destnode); |
e3a77561 JPM |
1106 | struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, |
1107 | uint data_sz, u32 dnode, u32 onode, | |
1108 | u32 dport, u32 oport, int errcode); | |
37e22164 | 1109 | int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf); |
06e7c70c TL |
1110 | bool tipc_msg_try_bundle(struct sk_buff *tskb, struct sk_buff **skb, u32 mss, |
1111 | u32 dnode, bool *new_bundle); | |
c637c103 | 1112 | bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos); |
2320bcda TL |
1113 | int tipc_msg_fragment(struct sk_buff *skb, const struct tipc_msg *hdr, |
1114 | int pktmax, struct sk_buff_head *frags); | |
c5898636 | 1115 | int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, |
34747539 | 1116 | int offset, int dsz, int mtu, struct sk_buff_head *list); |
c0bceb97 JM |
1117 | int tipc_msg_append(struct tipc_msg *hdr, struct msghdr *m, int dlen, |
1118 | int mss, struct sk_buff_head *txq); | |
cda3696d | 1119 | bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err); |
4c94cc2d | 1120 | bool tipc_msg_assemble(struct sk_buff_head *list); |
2f566124 | 1121 | bool tipc_msg_reassemble(struct sk_buff_head *list, struct sk_buff_head *rcvq); |
a853e4c6 JPM |
1122 | bool tipc_msg_pskb_copy(u32 dst, struct sk_buff_head *msg, |
1123 | struct sk_buff_head *cpy); | |
8306f99a JPM |
1124 | void __tipc_skb_queue_sorted(struct sk_buff_head *list, u16 seqno, |
1125 | struct sk_buff *skb); | |
67879274 | 1126 | bool tipc_msg_skb_clone(struct sk_buff_head *msg, struct sk_buff_head *cpy); |
078bec82 | 1127 | |
e4bf4f76 JPM |
1128 | static inline u16 buf_seqno(struct sk_buff *skb) |
1129 | { | |
1130 | return msg_seqno(buf_msg(skb)); | |
1131 | } | |
1132 | ||
d618d09a JM |
1133 | static inline int buf_roundup_len(struct sk_buff *skb) |
1134 | { | |
1135 | return (skb->len / 1024 + 1) * 1024; | |
1136 | } | |
1137 | ||
cb1b7280 JPM |
1138 | /* tipc_skb_peek(): peek and reserve first buffer in list |
1139 | * @list: list to be peeked in | |
1140 | * Returns pointer to first buffer in list, if any | |
1141 | */ | |
1142 | static inline struct sk_buff *tipc_skb_peek(struct sk_buff_head *list, | |
1143 | spinlock_t *lock) | |
1144 | { | |
1145 | struct sk_buff *skb; | |
1146 | ||
1147 | spin_lock_bh(lock); | |
1148 | skb = skb_peek(list); | |
1149 | if (skb) | |
1150 | skb_get(skb); | |
1151 | spin_unlock_bh(lock); | |
1152 | return skb; | |
1153 | } | |
1154 | ||
c637c103 JPM |
1155 | /* tipc_skb_peek_port(): find a destination port, ignoring all destinations |
1156 | * up to and including 'filter'. | |
1157 | * Note: ignoring previously tried destinations minimizes the risk of | |
1158 | * contention on the socket lock | |
1159 | * @list: list to be peeked in | |
1160 | * @filter: last destination to be ignored from search | |
1161 | * Returns a destination port number, of applicable. | |
1162 | */ | |
1163 | static inline u32 tipc_skb_peek_port(struct sk_buff_head *list, u32 filter) | |
1164 | { | |
1165 | struct sk_buff *skb; | |
1166 | u32 dport = 0; | |
1167 | bool ignore = true; | |
1168 | ||
1169 | spin_lock_bh(&list->lock); | |
1170 | skb_queue_walk(list, skb) { | |
1171 | dport = msg_destport(buf_msg(skb)); | |
1172 | if (!filter || skb_queue_is_last(list, skb)) | |
1173 | break; | |
1174 | if (dport == filter) | |
1175 | ignore = false; | |
1176 | else if (!ignore) | |
1177 | break; | |
1178 | } | |
1179 | spin_unlock_bh(&list->lock); | |
1180 | return dport; | |
1181 | } | |
1182 | ||
1183 | /* tipc_skb_dequeue(): unlink first buffer with dest 'dport' from list | |
1184 | * @list: list to be unlinked from | |
1185 | * @dport: selection criteria for buffer to unlink | |
1186 | */ | |
1187 | static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, | |
1188 | u32 dport) | |
1189 | { | |
1190 | struct sk_buff *_skb, *tmp, *skb = NULL; | |
1191 | ||
1192 | spin_lock_bh(&list->lock); | |
1193 | skb_queue_walk_safe(list, _skb, tmp) { | |
1194 | if (msg_destport(buf_msg(_skb)) == dport) { | |
1195 | __skb_unlink(_skb, list); | |
1196 | skb = _skb; | |
1197 | break; | |
1198 | } | |
1199 | } | |
1200 | spin_unlock_bh(&list->lock); | |
1201 | return skb; | |
1202 | } | |
1203 | ||
598411d7 JPM |
1204 | /* tipc_skb_queue_splice_tail - append an skb list to lock protected list |
1205 | * @list: the new list to append. Not lock protected | |
1206 | * @head: target list. Lock protected. | |
1207 | */ | |
1208 | static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list, | |
1209 | struct sk_buff_head *head) | |
1210 | { | |
1211 | spin_lock_bh(&head->lock); | |
1212 | skb_queue_splice_tail(list, head); | |
1213 | spin_unlock_bh(&head->lock); | |
1214 | } | |
1215 | ||
1216 | /* tipc_skb_queue_splice_tail_init - merge two lock protected skb lists | |
1217 | * @list: the new list to add. Lock protected. Will be reinitialized | |
1218 | * @head: target list. Lock protected. | |
1219 | */ | |
1220 | static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list, | |
1221 | struct sk_buff_head *head) | |
1222 | { | |
1223 | struct sk_buff_head tmp; | |
1224 | ||
1225 | __skb_queue_head_init(&tmp); | |
1226 | ||
1227 | spin_lock_bh(&list->lock); | |
1228 | skb_queue_splice_tail_init(list, &tmp); | |
1229 | spin_unlock_bh(&list->lock); | |
1230 | tipc_skb_queue_splice_tail(&tmp, head); | |
1231 | } | |
1232 | ||
382f598f TL |
1233 | /* __tipc_skb_dequeue() - dequeue the head skb according to expected seqno |
1234 | * @list: list to be dequeued from | |
1235 | * @seqno: seqno of the expected msg | |
1236 | * | |
1237 | * returns skb dequeued from the list if its seqno is less than or equal to | |
1238 | * the expected one, otherwise the skb is still hold | |
1239 | * | |
1240 | * Note: must be used with appropriate locks held only | |
1241 | */ | |
1242 | static inline struct sk_buff *__tipc_skb_dequeue(struct sk_buff_head *list, | |
1243 | u16 seqno) | |
1244 | { | |
1245 | struct sk_buff *skb = skb_peek(list); | |
1246 | ||
1247 | if (skb && less_eq(buf_seqno(skb), seqno)) { | |
1248 | __skb_unlink(skb, list); | |
1249 | return skb; | |
1250 | } | |
1251 | return NULL; | |
1252 | } | |
1253 | ||
b97bf3fd | 1254 | #endif |