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 | ||
88843ab0 AE |
30 | #include <asm/unaligned.h> |
31 | ||
1da177e4 | 32 | /* L2CAP defaults */ |
47ec1dcd | 33 | #define L2CAP_DEFAULT_MTU 672 |
f2fcfcd6 | 34 | #define L2CAP_DEFAULT_MIN_MTU 48 |
47ec1dcd | 35 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
1c2acffb | 36 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
6327eb98 | 37 | #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
e90bac06 | 38 | #define L2CAP_DEFAULT_MAX_TX 3 |
fa235562 | 39 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
e90bac06 | 40 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
db12d647 | 41 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ |
c1b4f43b | 42 | #define L2CAP_DEFAULT_ACK_TO 200 |
8f7975b1 AE |
43 | #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF |
44 | #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF | |
45 | #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF | |
94122bbe | 46 | #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */ |
8c3a4f00 | 47 | #define L2CAP_LE_MIN_MTU 23 |
1da177e4 | 48 | |
ba13ccd9 MH |
49 | #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100) |
50 | #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000) | |
51 | #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000) | |
52 | #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000) | |
53 | #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000) | |
1da177e4 | 54 | |
466f8004 AE |
55 | #define L2CAP_A2MP_DEFAULT_MTU 670 |
56 | ||
1da177e4 LT |
57 | /* L2CAP socket address */ |
58 | struct sockaddr_l2 { | |
59 | sa_family_t l2_family; | |
8e036fc3 | 60 | __le16 l2_psm; |
1da177e4 | 61 | bdaddr_t l2_bdaddr; |
f29972de | 62 | __le16 l2_cid; |
43ef0b8b | 63 | __u8 l2_bdaddr_type; |
1da177e4 LT |
64 | }; |
65 | ||
66 | /* L2CAP socket options */ | |
67 | #define L2CAP_OPTIONS 0x01 | |
68 | struct l2cap_options { | |
69 | __u16 omtu; | |
70 | __u16 imtu; | |
71 | __u16 flush_to; | |
72 | __u8 mode; | |
fcc203c3 | 73 | __u8 fcs; |
68d7f0ce | 74 | __u8 max_tx; |
14b5aa71 | 75 | __u16 txwin_size; |
1da177e4 LT |
76 | }; |
77 | ||
78 | #define L2CAP_CONNINFO 0x02 | |
79 | struct l2cap_conninfo { | |
80 | __u16 hci_handle; | |
81 | __u8 dev_class[3]; | |
82 | }; | |
83 | ||
84 | #define L2CAP_LM 0x03 | |
85 | #define L2CAP_LM_MASTER 0x0001 | |
86 | #define L2CAP_LM_AUTH 0x0002 | |
87 | #define L2CAP_LM_ENCRYPT 0x0004 | |
88 | #define L2CAP_LM_TRUSTED 0x0008 | |
89 | #define L2CAP_LM_RELIABLE 0x0010 | |
90 | #define L2CAP_LM_SECURE 0x0020 | |
91 | ||
92 | /* L2CAP command codes */ | |
47ec1dcd MH |
93 | #define L2CAP_COMMAND_REJ 0x01 |
94 | #define L2CAP_CONN_REQ 0x02 | |
95 | #define L2CAP_CONN_RSP 0x03 | |
96 | #define L2CAP_CONF_REQ 0x04 | |
97 | #define L2CAP_CONF_RSP 0x05 | |
98 | #define L2CAP_DISCONN_REQ 0x06 | |
99 | #define L2CAP_DISCONN_RSP 0x07 | |
100 | #define L2CAP_ECHO_REQ 0x08 | |
101 | #define L2CAP_ECHO_RSP 0x09 | |
102 | #define L2CAP_INFO_REQ 0x0a | |
103 | #define L2CAP_INFO_RSP 0x0b | |
38094c75 MM |
104 | #define L2CAP_CREATE_CHAN_REQ 0x0c |
105 | #define L2CAP_CREATE_CHAN_RSP 0x0d | |
106 | #define L2CAP_MOVE_CHAN_REQ 0x0e | |
107 | #define L2CAP_MOVE_CHAN_RSP 0x0f | |
108 | #define L2CAP_MOVE_CHAN_CFM 0x10 | |
109 | #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 | |
3300d9a9 CT |
110 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
111 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
47ec1dcd | 112 | |
a858393b | 113 | /* L2CAP extended feature mask */ |
47ec1dcd MH |
114 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
115 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
a858393b | 116 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
47ec1dcd MH |
117 | #define L2CAP_FEAT_ERTM 0x00000008 |
118 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
119 | #define L2CAP_FEAT_FCS 0x00000020 | |
a858393b | 120 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
47ec1dcd | 121 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
a858393b AE |
122 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
123 | #define L2CAP_FEAT_UCD 0x00000200 | |
47ec1dcd MH |
124 | |
125 | /* L2CAP checksum option */ | |
126 | #define L2CAP_FCS_NONE 0x00 | |
127 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 128 | |
d835ac0f MM |
129 | /* L2CAP fixed channels */ |
130 | #define L2CAP_FC_L2CAP 0x02 | |
131 | #define L2CAP_FC_A2MP 0x08 | |
132 | ||
1c2acffb | 133 | /* L2CAP Control Field bit masks */ |
57253fd8 AE |
134 | #define L2CAP_CTRL_SAR 0xC000 |
135 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
136 | #define L2CAP_CTRL_TXSEQ 0x007E | |
137 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
138 | ||
139 | #define L2CAP_CTRL_RETRANS 0x0080 | |
140 | #define L2CAP_CTRL_FINAL 0x0080 | |
141 | #define L2CAP_CTRL_POLL 0x0010 | |
142 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
143 | ||
144 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
145 | #define L2CAP_CTRL_SUPER_SHIFT 2 | |
d5f7ac38 MM |
146 | #define L2CAP_CTRL_POLL_SHIFT 4 |
147 | #define L2CAP_CTRL_FINAL_SHIFT 7 | |
57253fd8 AE |
148 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
149 | #define L2CAP_CTRL_SAR_SHIFT 14 | |
150 | ||
151 | /* L2CAP Extended Control Field bit mask */ | |
152 | #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 | |
153 | #define L2CAP_EXT_CTRL_SAR 0x00030000 | |
154 | #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 | |
155 | #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC | |
156 | ||
157 | #define L2CAP_EXT_CTRL_POLL 0x00040000 | |
158 | #define L2CAP_EXT_CTRL_FINAL 0x00000002 | |
159 | #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ | |
160 | ||
d5f7ac38 | 161 | #define L2CAP_EXT_CTRL_FINAL_SHIFT 1 |
57253fd8 AE |
162 | #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 |
163 | #define L2CAP_EXT_CTRL_SAR_SHIFT 16 | |
164 | #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 | |
d5f7ac38 | 165 | #define L2CAP_EXT_CTRL_POLL_SHIFT 18 |
57253fd8 | 166 | #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 |
1c2acffb GP |
167 | |
168 | /* L2CAP Supervisory Function */ | |
ab784b73 AE |
169 | #define L2CAP_SUPER_RR 0x00 |
170 | #define L2CAP_SUPER_REJ 0x01 | |
171 | #define L2CAP_SUPER_RNR 0x02 | |
172 | #define L2CAP_SUPER_SREJ 0x03 | |
1c2acffb GP |
173 | |
174 | /* L2CAP Segmentation and Reassembly */ | |
7e0ef6ee AE |
175 | #define L2CAP_SAR_UNSEGMENTED 0x00 |
176 | #define L2CAP_SAR_START 0x01 | |
177 | #define L2CAP_SAR_END 0x02 | |
178 | #define L2CAP_SAR_CONTINUE 0x03 | |
1c2acffb | 179 | |
e2fd318e | 180 | /* L2CAP Command rej. reasons */ |
8d6765aa AE |
181 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
182 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
183 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
e2fd318e | 184 | |
1da177e4 LT |
185 | /* L2CAP structures */ |
186 | struct l2cap_hdr { | |
8e036fc3 AV |
187 | __le16 len; |
188 | __le16 cid; | |
66c853cc | 189 | } __packed; |
1da177e4 | 190 | #define L2CAP_HDR_SIZE 4 |
d43cb289 AE |
191 | #define L2CAP_ENH_HDR_SIZE 6 |
192 | #define L2CAP_EXT_HDR_SIZE 8 | |
193 | ||
194 | #define L2CAP_FCS_SIZE 2 | |
195 | #define L2CAP_SDULEN_SIZE 2 | |
196 | #define L2CAP_PSMLEN_SIZE 2 | |
d5f7ac38 MM |
197 | #define L2CAP_ENH_CTRL_SIZE 2 |
198 | #define L2CAP_EXT_CTRL_SIZE 4 | |
1da177e4 LT |
199 | |
200 | struct l2cap_cmd_hdr { | |
201 | __u8 code; | |
202 | __u8 ident; | |
8e036fc3 | 203 | __le16 len; |
66c853cc | 204 | } __packed; |
1da177e4 LT |
205 | #define L2CAP_CMD_HDR_SIZE 4 |
206 | ||
e2fd318e IK |
207 | struct l2cap_cmd_rej_unk { |
208 | __le16 reason; | |
209 | } __packed; | |
210 | ||
211 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 212 | __le16 reason; |
e2fd318e IK |
213 | __le16 max_mtu; |
214 | } __packed; | |
215 | ||
216 | struct l2cap_cmd_rej_cid { | |
217 | __le16 reason; | |
218 | __le16 scid; | |
219 | __le16 dcid; | |
66c853cc | 220 | } __packed; |
1da177e4 LT |
221 | |
222 | struct l2cap_conn_req { | |
8e036fc3 AV |
223 | __le16 psm; |
224 | __le16 scid; | |
66c853cc | 225 | } __packed; |
1da177e4 LT |
226 | |
227 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
228 | __le16 dcid; |
229 | __le16 scid; | |
230 | __le16 result; | |
231 | __le16 status; | |
66c853cc | 232 | } __packed; |
1da177e4 | 233 | |
2983fd68 AE |
234 | /* protocol/service multiplexer (PSM) */ |
235 | #define L2CAP_PSM_SDP 0x0001 | |
236 | #define L2CAP_PSM_RFCOMM 0x0003 | |
237 | ||
8db4dc46 GP |
238 | /* channel indentifier */ |
239 | #define L2CAP_CID_SIGNALING 0x0001 | |
240 | #define L2CAP_CID_CONN_LESS 0x0002 | |
466f8004 | 241 | #define L2CAP_CID_A2MP 0x0003 |
acd7d370 VT |
242 | #define L2CAP_CID_LE_DATA 0x0004 |
243 | #define L2CAP_CID_LE_SIGNALING 0x0005 | |
244 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
245 | #define L2CAP_CID_DYN_START 0x0040 |
246 | #define L2CAP_CID_DYN_END 0xffff | |
247 | ||
38094c75 | 248 | /* connect/create channel results */ |
47ec1dcd MH |
249 | #define L2CAP_CR_SUCCESS 0x0000 |
250 | #define L2CAP_CR_PEND 0x0001 | |
251 | #define L2CAP_CR_BAD_PSM 0x0002 | |
252 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
253 | #define L2CAP_CR_NO_MEM 0x0004 | |
38094c75 | 254 | #define L2CAP_CR_BAD_AMP 0x0005 |
1da177e4 | 255 | |
38094c75 | 256 | /* connect/create channel status */ |
47ec1dcd MH |
257 | #define L2CAP_CS_NO_INFO 0x0000 |
258 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
259 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
260 | |
261 | struct l2cap_conf_req { | |
8e036fc3 AV |
262 | __le16 dcid; |
263 | __le16 flags; | |
1da177e4 | 264 | __u8 data[0]; |
66c853cc | 265 | } __packed; |
1da177e4 LT |
266 | |
267 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
268 | __le16 scid; |
269 | __le16 flags; | |
270 | __le16 result; | |
1da177e4 | 271 | __u8 data[0]; |
66c853cc | 272 | } __packed; |
1da177e4 | 273 | |
5dee9e7c MH |
274 | #define L2CAP_CONF_SUCCESS 0x0000 |
275 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
276 | #define L2CAP_CONF_REJECT 0x0002 | |
277 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
0e8b207e | 278 | #define L2CAP_CONF_PENDING 0x0004 |
5a9e7057 | 279 | #define L2CAP_CONF_EFS_REJECT 0x0005 |
1da177e4 | 280 | |
59e54bd1 AE |
281 | /* configuration req/rsp continuation flag */ |
282 | #define L2CAP_CONF_FLAG_CONTINUATION 0x0001 | |
283 | ||
1da177e4 LT |
284 | struct l2cap_conf_opt { |
285 | __u8 type; | |
286 | __u8 len; | |
287 | __u8 val[0]; | |
66c853cc | 288 | } __packed; |
1da177e4 LT |
289 | #define L2CAP_CONF_OPT_SIZE 2 |
290 | ||
589d2746 | 291 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 292 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 293 | |
1da177e4 LT |
294 | #define L2CAP_CONF_MTU 0x01 |
295 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
296 | #define L2CAP_CONF_QOS 0x03 | |
297 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 298 | #define L2CAP_CONF_FCS 0x05 |
5a9e7057 | 299 | #define L2CAP_CONF_EFS 0x06 |
6327eb98 | 300 | #define L2CAP_CONF_EWS 0x07 |
1da177e4 LT |
301 | |
302 | #define L2CAP_CONF_MAX_SIZE 22 | |
303 | ||
6464f35f MH |
304 | struct l2cap_conf_rfc { |
305 | __u8 mode; | |
306 | __u8 txwin_size; | |
307 | __u8 max_transmit; | |
308 | __le16 retrans_timeout; | |
309 | __le16 monitor_timeout; | |
310 | __le16 max_pdu_size; | |
66c853cc | 311 | } __packed; |
6464f35f MH |
312 | |
313 | #define L2CAP_MODE_BASIC 0x00 | |
314 | #define L2CAP_MODE_RETRANS 0x01 | |
315 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 316 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 317 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 318 | |
5a9e7057 AE |
319 | struct l2cap_conf_efs { |
320 | __u8 id; | |
321 | __u8 stype; | |
322 | __le16 msdu; | |
323 | __le32 sdu_itime; | |
324 | __le32 acc_lat; | |
325 | __le32 flush_to; | |
326 | } __packed; | |
327 | ||
8f7975b1 AE |
328 | #define L2CAP_SERV_NOTRAFIC 0x00 |
329 | #define L2CAP_SERV_BESTEFFORT 0x01 | |
330 | #define L2CAP_SERV_GUARANTEED 0x02 | |
331 | ||
332 | #define L2CAP_BESTEFFORT_ID 0x01 | |
333 | ||
1da177e4 | 334 | struct l2cap_disconn_req { |
8e036fc3 AV |
335 | __le16 dcid; |
336 | __le16 scid; | |
66c853cc | 337 | } __packed; |
1da177e4 LT |
338 | |
339 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
340 | __le16 dcid; |
341 | __le16 scid; | |
66c853cc | 342 | } __packed; |
1da177e4 LT |
343 | |
344 | struct l2cap_info_req { | |
8e036fc3 | 345 | __le16 type; |
66c853cc | 346 | } __packed; |
1da177e4 LT |
347 | |
348 | struct l2cap_info_rsp { | |
8e036fc3 AV |
349 | __le16 type; |
350 | __le16 result; | |
1da177e4 | 351 | __u8 data[0]; |
66c853cc | 352 | } __packed; |
1da177e4 | 353 | |
38094c75 MM |
354 | struct l2cap_create_chan_req { |
355 | __le16 psm; | |
356 | __le16 scid; | |
357 | __u8 amp_id; | |
358 | } __packed; | |
359 | ||
360 | struct l2cap_create_chan_rsp { | |
361 | __le16 dcid; | |
362 | __le16 scid; | |
363 | __le16 result; | |
364 | __le16 status; | |
365 | } __packed; | |
366 | ||
367 | struct l2cap_move_chan_req { | |
368 | __le16 icid; | |
369 | __u8 dest_amp_id; | |
370 | } __packed; | |
371 | ||
372 | struct l2cap_move_chan_rsp { | |
373 | __le16 icid; | |
374 | __le16 result; | |
375 | } __packed; | |
376 | ||
377 | #define L2CAP_MR_SUCCESS 0x0000 | |
378 | #define L2CAP_MR_PEND 0x0001 | |
379 | #define L2CAP_MR_BAD_ID 0x0002 | |
380 | #define L2CAP_MR_SAME_ID 0x0003 | |
381 | #define L2CAP_MR_NOT_SUPP 0x0004 | |
382 | #define L2CAP_MR_COLLISION 0x0005 | |
383 | #define L2CAP_MR_NOT_ALLOWED 0x0006 | |
384 | ||
385 | struct l2cap_move_chan_cfm { | |
386 | __le16 icid; | |
387 | __le16 result; | |
388 | } __packed; | |
389 | ||
390 | #define L2CAP_MC_CONFIRMED 0x0000 | |
391 | #define L2CAP_MC_UNCONFIRMED 0x0001 | |
392 | ||
393 | struct l2cap_move_chan_cfm_rsp { | |
394 | __le16 icid; | |
395 | } __packed; | |
396 | ||
1da177e4 | 397 | /* info type */ |
8d6765aa AE |
398 | #define L2CAP_IT_CL_MTU 0x0001 |
399 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
400 | #define L2CAP_IT_FIXED_CHAN 0x0003 | |
1da177e4 LT |
401 | |
402 | /* info result */ | |
8d6765aa AE |
403 | #define L2CAP_IR_SUCCESS 0x0000 |
404 | #define L2CAP_IR_NOTSUPP 0x0001 | |
1da177e4 | 405 | |
de73115a CT |
406 | struct l2cap_conn_param_update_req { |
407 | __le16 min; | |
408 | __le16 max; | |
409 | __le16 latency; | |
410 | __le16 to_multiplier; | |
411 | } __packed; | |
412 | ||
413 | struct l2cap_conn_param_update_rsp { | |
414 | __le16 result; | |
415 | } __packed; | |
416 | ||
417 | /* Connection Parameters result */ | |
418 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
419 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
420 | ||
48454079 | 421 | /* ----- L2CAP channels and connections ----- */ |
3c588192 MM |
422 | struct l2cap_seq_list { |
423 | __u16 head; | |
424 | __u16 tail; | |
425 | __u16 mask; | |
426 | __u16 *list; | |
427 | }; | |
428 | ||
429 | #define L2CAP_SEQ_LIST_CLEAR 0xFFFF | |
430 | #define L2CAP_SEQ_LIST_TAIL 0x8000 | |
431 | ||
48454079 GP |
432 | struct l2cap_chan { |
433 | struct sock *sk; | |
8c1d787b GP |
434 | |
435 | struct l2cap_conn *conn; | |
436 | ||
89bc500e GP |
437 | __u8 state; |
438 | ||
71ba0e56 GP |
439 | atomic_t refcnt; |
440 | ||
fe4128e0 GP |
441 | __le16 psm; |
442 | __u16 dcid; | |
443 | __u16 scid; | |
4343478f | 444 | |
0c1bc5c6 GP |
445 | __u16 imtu; |
446 | __u16 omtu; | |
447 | __u16 flush_to; | |
448 | __u8 mode; | |
715ec005 | 449 | __u8 chan_type; |
2ea66482 | 450 | __u8 chan_policy; |
0c1bc5c6 GP |
451 | |
452 | __le16 sport; | |
453 | ||
4343478f | 454 | __u8 sec_level; |
4343478f | 455 | |
fc7f8a7e GP |
456 | __u8 ident; |
457 | ||
73ffa904 GP |
458 | __u8 conf_req[64]; |
459 | __u8 conf_len; | |
460 | __u8 num_conf_req; | |
461 | __u8 num_conf_rsp; | |
462 | ||
47d1ec61 GP |
463 | __u8 fcs; |
464 | ||
6327eb98 | 465 | __u16 tx_win; |
836be934 | 466 | __u16 tx_win_max; |
c20f8e35 | 467 | __u16 ack_win; |
47d1ec61 GP |
468 | __u8 max_tx; |
469 | __u16 retrans_timeout; | |
470 | __u16 monitor_timeout; | |
471 | __u16 mps; | |
472 | ||
d5f7ac38 MM |
473 | __u8 tx_state; |
474 | __u8 rx_state; | |
475 | ||
c1360a1c | 476 | unsigned long conf_state; |
e2ab4353 | 477 | unsigned long conn_state; |
d57b0e8b | 478 | unsigned long flags; |
525cd185 | 479 | |
fb45de7d AE |
480 | __u16 next_tx_seq; |
481 | __u16 expected_ack_seq; | |
482 | __u16 expected_tx_seq; | |
0b209fae | 483 | __u16 buffer_seq; |
fb45de7d | 484 | __u16 srej_save_reqseq; |
d5f7ac38 | 485 | __u16 last_acked_seq; |
fb45de7d AE |
486 | __u16 frames_sent; |
487 | __u16 unacked_frames; | |
6a026610 | 488 | __u8 retry_count; |
d5f7ac38 | 489 | __u16 srej_queue_next; |
6f61fd47 | 490 | __u16 sdu_len; |
6f61fd47 | 491 | struct sk_buff *sdu; |
84084a31 | 492 | struct sk_buff *sdu_last_frag; |
6f61fd47 | 493 | |
6327eb98 | 494 | __u16 remote_tx_win; |
2c03a7a4 GP |
495 | __u8 remote_max_tx; |
496 | __u16 remote_mps; | |
42e5c802 | 497 | |
5a9e7057 AE |
498 | __u8 local_id; |
499 | __u8 local_stype; | |
500 | __u16 local_msdu; | |
501 | __u32 local_sdu_itime; | |
502 | __u32 local_acc_lat; | |
503 | __u32 local_flush_to; | |
504 | ||
505 | __u8 remote_id; | |
506 | __u8 remote_stype; | |
507 | __u16 remote_msdu; | |
508 | __u32 remote_sdu_itime; | |
509 | __u32 remote_acc_lat; | |
510 | __u32 remote_flush_to; | |
511 | ||
721c4181 GP |
512 | struct delayed_work chan_timer; |
513 | struct delayed_work retrans_timer; | |
514 | struct delayed_work monitor_timer; | |
515 | struct delayed_work ack_timer; | |
516 | ||
58d35f87 GP |
517 | struct sk_buff *tx_send_head; |
518 | struct sk_buff_head tx_q; | |
f1c6775b | 519 | struct sk_buff_head srej_q; |
3c588192 MM |
520 | struct l2cap_seq_list srej_list; |
521 | struct l2cap_seq_list retrans_list; | |
e92c8e70 | 522 | |
f64b993f GP |
523 | struct list_head list; |
524 | struct list_head global_l; | |
80808e43 | 525 | |
f64b993f GP |
526 | void *data; |
527 | struct l2cap_ops *ops; | |
c03b355e | 528 | struct mutex lock; |
80808e43 GP |
529 | }; |
530 | ||
531 | struct l2cap_ops { | |
f64b993f | 532 | char *name; |
80808e43 | 533 | |
80b98027 GP |
534 | struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan); |
535 | int (*recv) (struct l2cap_chan * chan, | |
536 | struct sk_buff *skb); | |
c0df7f6e | 537 | void (*teardown) (struct l2cap_chan *chan, int err); |
80b98027 GP |
538 | void (*close) (struct l2cap_chan *chan); |
539 | void (*state_change) (struct l2cap_chan *chan, | |
540 | int state); | |
54a59aa2 | 541 | void (*ready) (struct l2cap_chan *chan); |
2f7719ce | 542 | struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, |
90338947 | 543 | unsigned long len, int nb); |
1da177e4 LT |
544 | }; |
545 | ||
546 | struct l2cap_conn { | |
f64b993f GP |
547 | struct hci_conn *hcon; |
548 | struct hci_chan *hchan; | |
1da177e4 | 549 | |
f64b993f GP |
550 | bdaddr_t *dst; |
551 | bdaddr_t *src; | |
1da177e4 | 552 | |
f64b993f | 553 | unsigned int mtu; |
1da177e4 | 554 | |
f64b993f GP |
555 | __u32 feat_mask; |
556 | __u8 fixed_chan_mask; | |
4e8402a3 | 557 | |
f64b993f GP |
558 | __u8 info_state; |
559 | __u8 info_ident; | |
4e8402a3 | 560 | |
f64b993f | 561 | struct delayed_work info_timer; |
4e8402a3 | 562 | |
f64b993f | 563 | spinlock_t lock; |
1da177e4 | 564 | |
f64b993f GP |
565 | struct sk_buff *rx_skb; |
566 | __u32 rx_len; | |
567 | __u8 tx_ident; | |
1da177e4 | 568 | |
f64b993f | 569 | __u8 disc_reason; |
2950f21a | 570 | |
f64b993f GP |
571 | struct delayed_work security_timer; |
572 | struct smp_chan *smp_chan; | |
5d3de7df | 573 | |
f64b993f GP |
574 | struct list_head chan_l; |
575 | struct mutex chan_lock; | |
1da177e4 LT |
576 | }; |
577 | ||
4e8402a3 | 578 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
579 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
580 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 581 | |
715ec005 GP |
582 | #define L2CAP_CHAN_RAW 1 |
583 | #define L2CAP_CHAN_CONN_LESS 2 | |
584 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
416fa752 | 585 | #define L2CAP_CHAN_CONN_FIX_A2MP 4 |
715ec005 | 586 | |
48454079 | 587 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
588 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
589 | ||
590 | struct l2cap_pinfo { | |
f64b993f | 591 | struct bt_sock bt; |
48454079 | 592 | struct l2cap_chan *chan; |
f64b993f | 593 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
594 | }; |
595 | ||
c1360a1c GP |
596 | enum { |
597 | CONF_REQ_SENT, | |
598 | CONF_INPUT_DONE, | |
599 | CONF_OUTPUT_DONE, | |
600 | CONF_MTU_DONE, | |
601 | CONF_MODE_DONE, | |
602 | CONF_CONNECT_PEND, | |
603 | CONF_NO_FCS_RECV, | |
604 | CONF_STATE2_DEVICE, | |
6327eb98 | 605 | CONF_EWS_RECV, |
0e8b207e AE |
606 | CONF_LOC_CONF_PEND, |
607 | CONF_REM_CONF_PEND, | |
2827011f | 608 | CONF_NOT_COMPLETE, |
c1360a1c | 609 | }; |
f2fcfcd6 GP |
610 | |
611 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
612 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 613 | |
e2ab4353 | 614 | enum { |
e2ab4353 GP |
615 | CONN_SREJ_SENT, |
616 | CONN_WAIT_F, | |
617 | CONN_SREJ_ACT, | |
618 | CONN_SEND_PBIT, | |
619 | CONN_REMOTE_BUSY, | |
620 | CONN_LOCAL_BUSY, | |
621 | CONN_REJ_ACT, | |
622 | CONN_SEND_FBIT, | |
623 | CONN_RNR_SENT, | |
e2ab4353 | 624 | }; |
e90bac06 | 625 | |
d57b0e8b AE |
626 | /* Definitions for flags in l2cap_chan */ |
627 | enum { | |
43bd0f32 | 628 | FLAG_ROLE_SWITCH, |
15770b1a | 629 | FLAG_FORCE_ACTIVE, |
ecf61bdb | 630 | FLAG_FORCE_RELIABLE, |
d57b0e8b | 631 | FLAG_FLUSHABLE, |
6327eb98 | 632 | FLAG_EXT_CTRL, |
5a9e7057 | 633 | FLAG_EFS_ENABLE, |
d57b0e8b AE |
634 | }; |
635 | ||
d5f7ac38 MM |
636 | enum { |
637 | L2CAP_TX_STATE_XMIT, | |
638 | L2CAP_TX_STATE_WAIT_F, | |
639 | }; | |
640 | ||
641 | enum { | |
642 | L2CAP_RX_STATE_RECV, | |
643 | L2CAP_RX_STATE_SREJ_SENT, | |
644 | }; | |
645 | ||
646 | enum { | |
647 | L2CAP_TXSEQ_EXPECTED, | |
648 | L2CAP_TXSEQ_EXPECTED_SREJ, | |
649 | L2CAP_TXSEQ_UNEXPECTED, | |
650 | L2CAP_TXSEQ_UNEXPECTED_SREJ, | |
651 | L2CAP_TXSEQ_DUPLICATE, | |
652 | L2CAP_TXSEQ_DUPLICATE_SREJ, | |
653 | L2CAP_TXSEQ_INVALID, | |
654 | L2CAP_TXSEQ_INVALID_IGNORE, | |
655 | }; | |
656 | ||
657 | enum { | |
658 | L2CAP_EV_DATA_REQUEST, | |
659 | L2CAP_EV_LOCAL_BUSY_DETECTED, | |
660 | L2CAP_EV_LOCAL_BUSY_CLEAR, | |
661 | L2CAP_EV_RECV_REQSEQ_AND_FBIT, | |
662 | L2CAP_EV_RECV_FBIT, | |
663 | L2CAP_EV_RETRANS_TO, | |
664 | L2CAP_EV_MONITOR_TO, | |
665 | L2CAP_EV_EXPLICIT_POLL, | |
666 | L2CAP_EV_RECV_IFRAME, | |
667 | L2CAP_EV_RECV_RR, | |
668 | L2CAP_EV_RECV_REJ, | |
669 | L2CAP_EV_RECV_RNR, | |
670 | L2CAP_EV_RECV_SREJ, | |
671 | L2CAP_EV_RECV_FRAME, | |
672 | }; | |
673 | ||
30648372 JK |
674 | void l2cap_chan_hold(struct l2cap_chan *c); |
675 | void l2cap_chan_put(struct l2cap_chan *c); | |
371fd835 | 676 | |
c03b355e AE |
677 | static inline void l2cap_chan_lock(struct l2cap_chan *chan) |
678 | { | |
679 | mutex_lock(&chan->lock); | |
680 | } | |
681 | ||
682 | static inline void l2cap_chan_unlock(struct l2cap_chan *chan) | |
683 | { | |
684 | mutex_unlock(&chan->lock); | |
685 | } | |
686 | ||
c2ec9c1b | 687 | static inline void l2cap_set_timer(struct l2cap_chan *chan, |
6f74b6f3 | 688 | struct delayed_work *work, long timeout) |
c2ec9c1b | 689 | { |
e05dcc32 | 690 | BT_DBG("chan %p state %s timeout %ld", chan, |
6f74b6f3 | 691 | state_to_string(chan->state), timeout); |
c2ec9c1b | 692 | |
6f74b6f3 AE |
693 | /* If delayed work cancelled do not hold(chan) |
694 | since it is already done with previous set_timer */ | |
17cd3f37 | 695 | if (!cancel_delayed_work(work)) |
371fd835 | 696 | l2cap_chan_hold(chan); |
6f74b6f3 | 697 | |
c2ec9c1b GP |
698 | schedule_delayed_work(work, timeout); |
699 | } | |
700 | ||
75b93b59 | 701 | static inline bool l2cap_clear_timer(struct l2cap_chan *chan, |
6f74b6f3 | 702 | struct delayed_work *work) |
c2ec9c1b | 703 | { |
75b93b59 SJ |
704 | bool ret; |
705 | ||
6f74b6f3 AE |
706 | /* put(chan) if delayed work cancelled otherwise it |
707 | is done in delayed work function */ | |
17cd3f37 | 708 | ret = cancel_delayed_work(work); |
75b93b59 | 709 | if (ret) |
371fd835 | 710 | l2cap_chan_put(chan); |
75b93b59 SJ |
711 | |
712 | return ret; | |
c2ec9c1b GP |
713 | } |
714 | ||
c9b66675 GP |
715 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
716 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
1a09bcb9 | 717 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) |
1a09bcb9 GP |
718 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) |
719 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
b83ddfe2 | 720 | msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO)); |
1a09bcb9 | 721 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) |
c74e560c | 722 | |
836be934 AE |
723 | static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) |
724 | { | |
5a364bd3 MM |
725 | if (seq1 >= seq2) |
726 | return seq1 - seq2; | |
727 | else | |
728 | return chan->tx_win_max + 1 - seq2 + seq1; | |
836be934 AE |
729 | } |
730 | ||
731 | static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) | |
732 | { | |
733 | return (seq + 1) % (chan->tx_win_max + 1); | |
734 | } | |
735 | ||
7e1af8a3 GP |
736 | static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan) |
737 | { | |
738 | return NULL; | |
739 | } | |
740 | ||
741 | static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err) | |
742 | { | |
743 | } | |
744 | ||
745 | static inline void l2cap_chan_no_ready(struct l2cap_chan *chan) | |
746 | { | |
747 | } | |
1da177e4 | 748 | |
eb939922 | 749 | extern bool disable_ertm; |
bb58f747 GP |
750 | |
751 | int l2cap_init_sockets(void); | |
752 | void l2cap_cleanup_sockets(void); | |
753 | ||
8c1d787b | 754 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
dcba0dba | 755 | int __l2cap_wait_ack(struct sock *sk); |
68983259 | 756 | |
9e4425ff GP |
757 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
758 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
759 | ||
eef1d9b6 | 760 | struct l2cap_chan *l2cap_chan_create(void); |
0f852724 | 761 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
cbe8fed4 | 762 | int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, |
8e9f9892 | 763 | bdaddr_t *dst, u8 dst_type); |
5e59b791 LAD |
764 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, |
765 | u32 priority); | |
e328140f | 766 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
d45fc423 | 767 | int l2cap_chan_check_security(struct l2cap_chan *chan); |
bd4b1653 | 768 | void l2cap_chan_set_defaults(struct l2cap_chan *chan); |
466f8004 AE |
769 | int l2cap_ertm_init(struct l2cap_chan *chan); |
770 | void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); | |
771 | void l2cap_chan_del(struct l2cap_chan *chan, int err); | |
bb58f747 | 772 | |
1da177e4 | 773 | #endif /* __L2CAP_H */ |