Commit | Line | Data |
---|---|---|
be21871f | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
ce5706bd | 4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
5d8868ff | 5 | Copyright (C) 2010 Google Inc. |
1da177e4 LT |
6 | |
7 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License version 2 as | |
11 | published by the Free Software Foundation; | |
12 | ||
13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
14 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
16 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
be21871f AE |
17 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
18 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
19 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | ||
be21871f AE |
22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
24 | SOFTWARE IS DISCLAIMED. |
25 | */ | |
26 | ||
27 | #ifndef __L2CAP_H | |
28 | #define __L2CAP_H | |
29 | ||
30 | /* L2CAP defaults */ | |
47ec1dcd | 31 | #define L2CAP_DEFAULT_MTU 672 |
f2fcfcd6 | 32 | #define L2CAP_DEFAULT_MIN_MTU 48 |
47ec1dcd | 33 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
1c2acffb | 34 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
6327eb98 | 35 | #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
e90bac06 | 36 | #define L2CAP_DEFAULT_MAX_TX 3 |
fa235562 | 37 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
e90bac06 | 38 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
db12d647 | 39 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ |
c1b4f43b | 40 | #define L2CAP_DEFAULT_ACK_TO 200 |
b62f328b | 41 | #define L2CAP_LE_DEFAULT_MTU 23 |
1da177e4 | 42 | |
4e8402a3 MH |
43 | #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ |
44 | #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ | |
1da177e4 LT |
45 | |
46 | /* L2CAP socket address */ | |
47 | struct sockaddr_l2 { | |
48 | sa_family_t l2_family; | |
8e036fc3 | 49 | __le16 l2_psm; |
1da177e4 | 50 | bdaddr_t l2_bdaddr; |
f29972de | 51 | __le16 l2_cid; |
1da177e4 LT |
52 | }; |
53 | ||
54 | /* L2CAP socket options */ | |
55 | #define L2CAP_OPTIONS 0x01 | |
56 | struct l2cap_options { | |
57 | __u16 omtu; | |
58 | __u16 imtu; | |
59 | __u16 flush_to; | |
60 | __u8 mode; | |
fcc203c3 | 61 | __u8 fcs; |
68d7f0ce | 62 | __u8 max_tx; |
14b5aa71 | 63 | __u16 txwin_size; |
1da177e4 LT |
64 | }; |
65 | ||
66 | #define L2CAP_CONNINFO 0x02 | |
67 | struct l2cap_conninfo { | |
68 | __u16 hci_handle; | |
69 | __u8 dev_class[3]; | |
70 | }; | |
71 | ||
72 | #define L2CAP_LM 0x03 | |
73 | #define L2CAP_LM_MASTER 0x0001 | |
74 | #define L2CAP_LM_AUTH 0x0002 | |
75 | #define L2CAP_LM_ENCRYPT 0x0004 | |
76 | #define L2CAP_LM_TRUSTED 0x0008 | |
77 | #define L2CAP_LM_RELIABLE 0x0010 | |
78 | #define L2CAP_LM_SECURE 0x0020 | |
79 | ||
80 | /* L2CAP command codes */ | |
47ec1dcd MH |
81 | #define L2CAP_COMMAND_REJ 0x01 |
82 | #define L2CAP_CONN_REQ 0x02 | |
83 | #define L2CAP_CONN_RSP 0x03 | |
84 | #define L2CAP_CONF_REQ 0x04 | |
85 | #define L2CAP_CONF_RSP 0x05 | |
86 | #define L2CAP_DISCONN_REQ 0x06 | |
87 | #define L2CAP_DISCONN_RSP 0x07 | |
88 | #define L2CAP_ECHO_REQ 0x08 | |
89 | #define L2CAP_ECHO_RSP 0x09 | |
90 | #define L2CAP_INFO_REQ 0x0a | |
91 | #define L2CAP_INFO_RSP 0x0b | |
3300d9a9 CT |
92 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
93 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
47ec1dcd | 94 | |
a858393b | 95 | /* L2CAP extended feature mask */ |
47ec1dcd MH |
96 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
97 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
a858393b | 98 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
47ec1dcd MH |
99 | #define L2CAP_FEAT_ERTM 0x00000008 |
100 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
101 | #define L2CAP_FEAT_FCS 0x00000020 | |
a858393b | 102 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
47ec1dcd | 103 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
a858393b AE |
104 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
105 | #define L2CAP_FEAT_UCD 0x00000200 | |
47ec1dcd MH |
106 | |
107 | /* L2CAP checksum option */ | |
108 | #define L2CAP_FCS_NONE 0x00 | |
109 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 110 | |
1c2acffb GP |
111 | /* L2CAP Control Field bit masks */ |
112 | #define L2CAP_CTRL_SAR 0xC000 | |
113 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
114 | #define L2CAP_CTRL_TXSEQ 0x007E | |
115 | #define L2CAP_CTRL_RETRANS 0x0080 | |
116 | #define L2CAP_CTRL_FINAL 0x0080 | |
117 | #define L2CAP_CTRL_POLL 0x0010 | |
118 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
119 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
120 | ||
121 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
122 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 | |
8f17154f | 123 | #define L2CAP_CTRL_SAR_SHIFT 14 |
1c2acffb GP |
124 | |
125 | /* L2CAP Supervisory Function */ | |
126 | #define L2CAP_SUPER_RCV_READY 0x0000 | |
127 | #define L2CAP_SUPER_REJECT 0x0004 | |
128 | #define L2CAP_SUPER_RCV_NOT_READY 0x0008 | |
129 | #define L2CAP_SUPER_SELECT_REJECT 0x000C | |
130 | ||
131 | /* L2CAP Segmentation and Reassembly */ | |
132 | #define L2CAP_SDU_UNSEGMENTED 0x0000 | |
133 | #define L2CAP_SDU_START 0x4000 | |
134 | #define L2CAP_SDU_END 0x8000 | |
135 | #define L2CAP_SDU_CONTINUE 0xC000 | |
136 | ||
e2fd318e | 137 | /* L2CAP Command rej. reasons */ |
8d6765aa AE |
138 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
139 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
140 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
e2fd318e | 141 | |
1da177e4 LT |
142 | /* L2CAP structures */ |
143 | struct l2cap_hdr { | |
8e036fc3 AV |
144 | __le16 len; |
145 | __le16 cid; | |
66c853cc | 146 | } __packed; |
1da177e4 LT |
147 | #define L2CAP_HDR_SIZE 4 |
148 | ||
149 | struct l2cap_cmd_hdr { | |
150 | __u8 code; | |
151 | __u8 ident; | |
8e036fc3 | 152 | __le16 len; |
66c853cc | 153 | } __packed; |
1da177e4 LT |
154 | #define L2CAP_CMD_HDR_SIZE 4 |
155 | ||
e2fd318e IK |
156 | struct l2cap_cmd_rej_unk { |
157 | __le16 reason; | |
158 | } __packed; | |
159 | ||
160 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 161 | __le16 reason; |
e2fd318e IK |
162 | __le16 max_mtu; |
163 | } __packed; | |
164 | ||
165 | struct l2cap_cmd_rej_cid { | |
166 | __le16 reason; | |
167 | __le16 scid; | |
168 | __le16 dcid; | |
66c853cc | 169 | } __packed; |
1da177e4 LT |
170 | |
171 | struct l2cap_conn_req { | |
8e036fc3 AV |
172 | __le16 psm; |
173 | __le16 scid; | |
66c853cc | 174 | } __packed; |
1da177e4 LT |
175 | |
176 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
177 | __le16 dcid; |
178 | __le16 scid; | |
179 | __le16 result; | |
180 | __le16 status; | |
66c853cc | 181 | } __packed; |
1da177e4 | 182 | |
8db4dc46 GP |
183 | /* channel indentifier */ |
184 | #define L2CAP_CID_SIGNALING 0x0001 | |
185 | #define L2CAP_CID_CONN_LESS 0x0002 | |
acd7d370 VT |
186 | #define L2CAP_CID_LE_DATA 0x0004 |
187 | #define L2CAP_CID_LE_SIGNALING 0x0005 | |
188 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
189 | #define L2CAP_CID_DYN_START 0x0040 |
190 | #define L2CAP_CID_DYN_END 0xffff | |
191 | ||
1da177e4 | 192 | /* connect result */ |
47ec1dcd MH |
193 | #define L2CAP_CR_SUCCESS 0x0000 |
194 | #define L2CAP_CR_PEND 0x0001 | |
195 | #define L2CAP_CR_BAD_PSM 0x0002 | |
196 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
197 | #define L2CAP_CR_NO_MEM 0x0004 | |
1da177e4 LT |
198 | |
199 | /* connect status */ | |
47ec1dcd MH |
200 | #define L2CAP_CS_NO_INFO 0x0000 |
201 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
202 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
203 | |
204 | struct l2cap_conf_req { | |
8e036fc3 AV |
205 | __le16 dcid; |
206 | __le16 flags; | |
1da177e4 | 207 | __u8 data[0]; |
66c853cc | 208 | } __packed; |
1da177e4 LT |
209 | |
210 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
211 | __le16 scid; |
212 | __le16 flags; | |
213 | __le16 result; | |
1da177e4 | 214 | __u8 data[0]; |
66c853cc | 215 | } __packed; |
1da177e4 | 216 | |
5dee9e7c MH |
217 | #define L2CAP_CONF_SUCCESS 0x0000 |
218 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
219 | #define L2CAP_CONF_REJECT 0x0002 | |
220 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
1da177e4 LT |
221 | |
222 | struct l2cap_conf_opt { | |
223 | __u8 type; | |
224 | __u8 len; | |
225 | __u8 val[0]; | |
66c853cc | 226 | } __packed; |
1da177e4 LT |
227 | #define L2CAP_CONF_OPT_SIZE 2 |
228 | ||
589d2746 | 229 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 230 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 231 | |
1da177e4 LT |
232 | #define L2CAP_CONF_MTU 0x01 |
233 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
234 | #define L2CAP_CONF_QOS 0x03 | |
235 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 236 | #define L2CAP_CONF_FCS 0x05 |
6327eb98 | 237 | #define L2CAP_CONF_EWS 0x07 |
1da177e4 LT |
238 | |
239 | #define L2CAP_CONF_MAX_SIZE 22 | |
240 | ||
6464f35f MH |
241 | struct l2cap_conf_rfc { |
242 | __u8 mode; | |
243 | __u8 txwin_size; | |
244 | __u8 max_transmit; | |
245 | __le16 retrans_timeout; | |
246 | __le16 monitor_timeout; | |
247 | __le16 max_pdu_size; | |
66c853cc | 248 | } __packed; |
6464f35f MH |
249 | |
250 | #define L2CAP_MODE_BASIC 0x00 | |
251 | #define L2CAP_MODE_RETRANS 0x01 | |
252 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 253 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 254 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 255 | |
1da177e4 | 256 | struct l2cap_disconn_req { |
8e036fc3 AV |
257 | __le16 dcid; |
258 | __le16 scid; | |
66c853cc | 259 | } __packed; |
1da177e4 LT |
260 | |
261 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
262 | __le16 dcid; |
263 | __le16 scid; | |
66c853cc | 264 | } __packed; |
1da177e4 LT |
265 | |
266 | struct l2cap_info_req { | |
8e036fc3 | 267 | __le16 type; |
66c853cc | 268 | } __packed; |
1da177e4 LT |
269 | |
270 | struct l2cap_info_rsp { | |
8e036fc3 AV |
271 | __le16 type; |
272 | __le16 result; | |
1da177e4 | 273 | __u8 data[0]; |
66c853cc | 274 | } __packed; |
1da177e4 LT |
275 | |
276 | /* info type */ | |
8d6765aa AE |
277 | #define L2CAP_IT_CL_MTU 0x0001 |
278 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
279 | #define L2CAP_IT_FIXED_CHAN 0x0003 | |
1da177e4 LT |
280 | |
281 | /* info result */ | |
8d6765aa AE |
282 | #define L2CAP_IR_SUCCESS 0x0000 |
283 | #define L2CAP_IR_NOTSUPP 0x0001 | |
1da177e4 | 284 | |
de73115a CT |
285 | struct l2cap_conn_param_update_req { |
286 | __le16 min; | |
287 | __le16 max; | |
288 | __le16 latency; | |
289 | __le16 to_multiplier; | |
290 | } __packed; | |
291 | ||
292 | struct l2cap_conn_param_update_rsp { | |
293 | __le16 result; | |
294 | } __packed; | |
295 | ||
296 | /* Connection Parameters result */ | |
297 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
298 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
299 | ||
48454079 | 300 | /* ----- L2CAP channels and connections ----- */ |
39d5a3ee GP |
301 | struct srej_list { |
302 | __u8 tx_seq; | |
303 | struct list_head list; | |
304 | }; | |
305 | ||
48454079 GP |
306 | struct l2cap_chan { |
307 | struct sock *sk; | |
8c1d787b GP |
308 | |
309 | struct l2cap_conn *conn; | |
310 | ||
89bc500e GP |
311 | __u8 state; |
312 | ||
71ba0e56 GP |
313 | atomic_t refcnt; |
314 | ||
fe4128e0 GP |
315 | __le16 psm; |
316 | __u16 dcid; | |
317 | __u16 scid; | |
4343478f | 318 | |
0c1bc5c6 GP |
319 | __u16 imtu; |
320 | __u16 omtu; | |
321 | __u16 flush_to; | |
322 | __u8 mode; | |
715ec005 | 323 | __u8 chan_type; |
0c1bc5c6 GP |
324 | |
325 | __le16 sport; | |
326 | ||
4343478f | 327 | __u8 sec_level; |
4343478f | 328 | |
fc7f8a7e GP |
329 | __u8 ident; |
330 | ||
73ffa904 GP |
331 | __u8 conf_req[64]; |
332 | __u8 conf_len; | |
333 | __u8 num_conf_req; | |
334 | __u8 num_conf_rsp; | |
335 | ||
47d1ec61 GP |
336 | __u8 fcs; |
337 | ||
6327eb98 | 338 | __u16 tx_win; |
47d1ec61 GP |
339 | __u8 max_tx; |
340 | __u16 retrans_timeout; | |
341 | __u16 monitor_timeout; | |
342 | __u16 mps; | |
343 | ||
c1360a1c | 344 | unsigned long conf_state; |
e2ab4353 | 345 | unsigned long conn_state; |
d57b0e8b | 346 | unsigned long flags; |
525cd185 | 347 | |
42e5c802 GP |
348 | __u8 next_tx_seq; |
349 | __u8 expected_ack_seq; | |
350 | __u8 expected_tx_seq; | |
351 | __u8 buffer_seq; | |
352 | __u8 buffer_seq_srej; | |
6a026610 GP |
353 | __u8 srej_save_reqseq; |
354 | __u8 frames_sent; | |
355 | __u8 unacked_frames; | |
356 | __u8 retry_count; | |
357 | __u8 num_acked; | |
6f61fd47 | 358 | __u16 sdu_len; |
6f61fd47 | 359 | struct sk_buff *sdu; |
84084a31 | 360 | struct sk_buff *sdu_last_frag; |
6f61fd47 | 361 | |
6327eb98 | 362 | __u16 remote_tx_win; |
2c03a7a4 GP |
363 | __u8 remote_max_tx; |
364 | __u16 remote_mps; | |
42e5c802 | 365 | |
ab07801d | 366 | struct timer_list chan_timer; |
e92c8e70 GP |
367 | struct timer_list retrans_timer; |
368 | struct timer_list monitor_timer; | |
369 | struct timer_list ack_timer; | |
58d35f87 GP |
370 | struct sk_buff *tx_send_head; |
371 | struct sk_buff_head tx_q; | |
f1c6775b | 372 | struct sk_buff_head srej_q; |
39d5a3ee | 373 | struct list_head srej_l; |
e92c8e70 | 374 | |
baa7e1fa | 375 | struct list_head list; |
23691d75 | 376 | struct list_head global_l; |
80808e43 GP |
377 | |
378 | void *data; | |
379 | struct l2cap_ops *ops; | |
380 | }; | |
381 | ||
382 | struct l2cap_ops { | |
383 | char *name; | |
384 | ||
385 | struct l2cap_chan *(*new_connection) (void *data); | |
23070494 | 386 | int (*recv) (void *data, struct sk_buff *skb); |
ba3bd0ee | 387 | void (*close) (void *data); |
89bc500e | 388 | void (*state_change) (void *data, int state); |
1da177e4 LT |
389 | }; |
390 | ||
391 | struct l2cap_conn { | |
392 | struct hci_conn *hcon; | |
393 | ||
394 | bdaddr_t *dst; | |
395 | bdaddr_t *src; | |
396 | ||
397 | unsigned int mtu; | |
398 | ||
4e8402a3 MH |
399 | __u32 feat_mask; |
400 | ||
401 | __u8 info_state; | |
402 | __u8 info_ident; | |
403 | ||
404 | struct timer_list info_timer; | |
405 | ||
1da177e4 LT |
406 | spinlock_t lock; |
407 | ||
408 | struct sk_buff *rx_skb; | |
409 | __u32 rx_len; | |
1da177e4 LT |
410 | __u8 tx_ident; |
411 | ||
2950f21a MH |
412 | __u8 disc_reason; |
413 | ||
5d3de7df | 414 | struct timer_list security_timer; |
1c1def09 | 415 | struct smp_chan *smp_chan; |
5d3de7df | 416 | |
baa7e1fa GP |
417 | struct list_head chan_l; |
418 | rwlock_t chan_lock; | |
1da177e4 LT |
419 | }; |
420 | ||
4e8402a3 | 421 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
422 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
423 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 424 | |
715ec005 GP |
425 | #define L2CAP_CHAN_RAW 1 |
426 | #define L2CAP_CHAN_CONN_LESS 2 | |
427 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
428 | ||
48454079 | 429 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
430 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
431 | ||
432 | struct l2cap_pinfo { | |
433 | struct bt_sock bt; | |
48454079 | 434 | struct l2cap_chan *chan; |
e328140f | 435 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
436 | }; |
437 | ||
c1360a1c GP |
438 | enum { |
439 | CONF_REQ_SENT, | |
440 | CONF_INPUT_DONE, | |
441 | CONF_OUTPUT_DONE, | |
442 | CONF_MTU_DONE, | |
443 | CONF_MODE_DONE, | |
444 | CONF_CONNECT_PEND, | |
445 | CONF_NO_FCS_RECV, | |
446 | CONF_STATE2_DEVICE, | |
6327eb98 | 447 | CONF_EWS_RECV, |
c1360a1c | 448 | }; |
f2fcfcd6 GP |
449 | |
450 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
451 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 452 | |
e2ab4353 | 453 | enum { |
e2ab4353 GP |
454 | CONN_SREJ_SENT, |
455 | CONN_WAIT_F, | |
456 | CONN_SREJ_ACT, | |
457 | CONN_SEND_PBIT, | |
458 | CONN_REMOTE_BUSY, | |
459 | CONN_LOCAL_BUSY, | |
460 | CONN_REJ_ACT, | |
461 | CONN_SEND_FBIT, | |
462 | CONN_RNR_SENT, | |
e2ab4353 | 463 | }; |
e90bac06 | 464 | |
d57b0e8b AE |
465 | /* Definitions for flags in l2cap_chan */ |
466 | enum { | |
43bd0f32 | 467 | FLAG_ROLE_SWITCH, |
15770b1a | 468 | FLAG_FORCE_ACTIVE, |
ecf61bdb | 469 | FLAG_FORCE_RELIABLE, |
d57b0e8b | 470 | FLAG_FLUSHABLE, |
6327eb98 | 471 | FLAG_EXT_CTRL, |
d57b0e8b AE |
472 | }; |
473 | ||
c9b66675 GP |
474 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
475 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
1a09bcb9 GP |
476 | #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
477 | L2CAP_DEFAULT_RETRANS_TO); | |
478 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) | |
479 | #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ | |
480 | L2CAP_DEFAULT_MONITOR_TO); | |
481 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) | |
482 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
483 | L2CAP_DEFAULT_ACK_TO); | |
484 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) | |
c74e560c | 485 | |
42e5c802 | 486 | static inline int l2cap_tx_window_full(struct l2cap_chan *ch) |
1c2acffb | 487 | { |
1c2acffb GP |
488 | int sub; |
489 | ||
42e5c802 | 490 | sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; |
1c2acffb GP |
491 | |
492 | if (sub < 0) | |
493 | sub += 64; | |
494 | ||
2c03a7a4 | 495 | return sub == ch->remote_tx_win; |
1c2acffb GP |
496 | } |
497 | ||
894718a6 AE |
498 | #define __get_txseq(ctrl) (((ctrl) & L2CAP_CTRL_TXSEQ) >> 1) |
499 | #define __get_reqseq(ctrl) (((ctrl) & L2CAP_CTRL_REQSEQ) >> 8) | |
500 | #define __is_iframe(ctrl) (!((ctrl) & L2CAP_CTRL_FRAME_TYPE)) | |
501 | #define __is_sframe(ctrl) ((ctrl) & L2CAP_CTRL_FRAME_TYPE) | |
502 | #define __is_sar_start(ctrl) (((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START) | |
1da177e4 | 503 | |
bb58f747 | 504 | extern int disable_ertm; |
bb58f747 GP |
505 | |
506 | int l2cap_init_sockets(void); | |
507 | void l2cap_cleanup_sockets(void); | |
508 | ||
8c1d787b | 509 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
dcba0dba | 510 | int __l2cap_wait_ack(struct sock *sk); |
68983259 | 511 | |
9e4425ff GP |
512 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
513 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
514 | ||
23691d75 | 515 | struct l2cap_chan *l2cap_chan_create(struct sock *sk); |
0f852724 | 516 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
23691d75 | 517 | void l2cap_chan_destroy(struct l2cap_chan *chan); |
77a74c7e | 518 | int l2cap_chan_connect(struct l2cap_chan *chan); |
9a91a04a | 519 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); |
e328140f | 520 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
bb58f747 | 521 | |
1da177e4 | 522 | #endif /* __L2CAP_H */ |