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Commit | Line | Data |
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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 |
8936fa6d AE |
35 | #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF |
36 | #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF | |
1c2acffb | 37 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
6327eb98 | 38 | #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
e90bac06 | 39 | #define L2CAP_DEFAULT_MAX_TX 3 |
fa235562 | 40 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
e90bac06 | 41 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
0b4558e3 | 42 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */ |
c1b4f43b | 43 | #define L2CAP_DEFAULT_ACK_TO 200 |
8f7975b1 AE |
44 | #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF |
45 | #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF | |
46 | #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF | |
94122bbe | 47 | #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */ |
8c3a4f00 | 48 | #define L2CAP_LE_MIN_MTU 23 |
1da177e4 | 49 | |
ba13ccd9 MH |
50 | #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100) |
51 | #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000) | |
52 | #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000) | |
53 | #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000) | |
54 | #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000) | |
5b155ef9 MM |
55 | #define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000) |
56 | #define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000) | |
1da177e4 | 57 | |
466f8004 AE |
58 | #define L2CAP_A2MP_DEFAULT_MTU 670 |
59 | ||
1da177e4 LT |
60 | /* L2CAP socket address */ |
61 | struct sockaddr_l2 { | |
62 | sa_family_t l2_family; | |
8e036fc3 | 63 | __le16 l2_psm; |
1da177e4 | 64 | bdaddr_t l2_bdaddr; |
f29972de | 65 | __le16 l2_cid; |
43ef0b8b | 66 | __u8 l2_bdaddr_type; |
1da177e4 LT |
67 | }; |
68 | ||
69 | /* L2CAP socket options */ | |
70 | #define L2CAP_OPTIONS 0x01 | |
71 | struct l2cap_options { | |
72 | __u16 omtu; | |
73 | __u16 imtu; | |
74 | __u16 flush_to; | |
75 | __u8 mode; | |
fcc203c3 | 76 | __u8 fcs; |
68d7f0ce | 77 | __u8 max_tx; |
14b5aa71 | 78 | __u16 txwin_size; |
1da177e4 LT |
79 | }; |
80 | ||
81 | #define L2CAP_CONNINFO 0x02 | |
82 | struct l2cap_conninfo { | |
83 | __u16 hci_handle; | |
84 | __u8 dev_class[3]; | |
85 | }; | |
86 | ||
87 | #define L2CAP_LM 0x03 | |
88 | #define L2CAP_LM_MASTER 0x0001 | |
89 | #define L2CAP_LM_AUTH 0x0002 | |
90 | #define L2CAP_LM_ENCRYPT 0x0004 | |
91 | #define L2CAP_LM_TRUSTED 0x0008 | |
92 | #define L2CAP_LM_RELIABLE 0x0010 | |
93 | #define L2CAP_LM_SECURE 0x0020 | |
94 | ||
95 | /* L2CAP command codes */ | |
47ec1dcd MH |
96 | #define L2CAP_COMMAND_REJ 0x01 |
97 | #define L2CAP_CONN_REQ 0x02 | |
98 | #define L2CAP_CONN_RSP 0x03 | |
99 | #define L2CAP_CONF_REQ 0x04 | |
100 | #define L2CAP_CONF_RSP 0x05 | |
101 | #define L2CAP_DISCONN_REQ 0x06 | |
102 | #define L2CAP_DISCONN_RSP 0x07 | |
103 | #define L2CAP_ECHO_REQ 0x08 | |
104 | #define L2CAP_ECHO_RSP 0x09 | |
105 | #define L2CAP_INFO_REQ 0x0a | |
106 | #define L2CAP_INFO_RSP 0x0b | |
38094c75 MM |
107 | #define L2CAP_CREATE_CHAN_REQ 0x0c |
108 | #define L2CAP_CREATE_CHAN_RSP 0x0d | |
109 | #define L2CAP_MOVE_CHAN_REQ 0x0e | |
110 | #define L2CAP_MOVE_CHAN_RSP 0x0f | |
111 | #define L2CAP_MOVE_CHAN_CFM 0x10 | |
112 | #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 | |
3300d9a9 CT |
113 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
114 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
47ec1dcd | 115 | |
a858393b | 116 | /* L2CAP extended feature mask */ |
47ec1dcd MH |
117 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
118 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
a858393b | 119 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
47ec1dcd MH |
120 | #define L2CAP_FEAT_ERTM 0x00000008 |
121 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
122 | #define L2CAP_FEAT_FCS 0x00000020 | |
a858393b | 123 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
47ec1dcd | 124 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
a858393b AE |
125 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
126 | #define L2CAP_FEAT_UCD 0x00000200 | |
47ec1dcd MH |
127 | |
128 | /* L2CAP checksum option */ | |
129 | #define L2CAP_FCS_NONE 0x00 | |
130 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 131 | |
d835ac0f MM |
132 | /* L2CAP fixed channels */ |
133 | #define L2CAP_FC_L2CAP 0x02 | |
d40bffbc | 134 | #define L2CAP_FC_CONNLESS 0x04 |
d835ac0f MM |
135 | #define L2CAP_FC_A2MP 0x08 |
136 | ||
1c2acffb | 137 | /* L2CAP Control Field bit masks */ |
57253fd8 AE |
138 | #define L2CAP_CTRL_SAR 0xC000 |
139 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
140 | #define L2CAP_CTRL_TXSEQ 0x007E | |
141 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
142 | ||
143 | #define L2CAP_CTRL_RETRANS 0x0080 | |
144 | #define L2CAP_CTRL_FINAL 0x0080 | |
145 | #define L2CAP_CTRL_POLL 0x0010 | |
146 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
147 | ||
148 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
149 | #define L2CAP_CTRL_SUPER_SHIFT 2 | |
d5f7ac38 MM |
150 | #define L2CAP_CTRL_POLL_SHIFT 4 |
151 | #define L2CAP_CTRL_FINAL_SHIFT 7 | |
57253fd8 AE |
152 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
153 | #define L2CAP_CTRL_SAR_SHIFT 14 | |
154 | ||
155 | /* L2CAP Extended Control Field bit mask */ | |
156 | #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 | |
157 | #define L2CAP_EXT_CTRL_SAR 0x00030000 | |
158 | #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 | |
159 | #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC | |
160 | ||
161 | #define L2CAP_EXT_CTRL_POLL 0x00040000 | |
162 | #define L2CAP_EXT_CTRL_FINAL 0x00000002 | |
163 | #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ | |
164 | ||
d5f7ac38 | 165 | #define L2CAP_EXT_CTRL_FINAL_SHIFT 1 |
57253fd8 AE |
166 | #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 |
167 | #define L2CAP_EXT_CTRL_SAR_SHIFT 16 | |
168 | #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 | |
d5f7ac38 | 169 | #define L2CAP_EXT_CTRL_POLL_SHIFT 18 |
57253fd8 | 170 | #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 |
1c2acffb GP |
171 | |
172 | /* L2CAP Supervisory Function */ | |
ab784b73 AE |
173 | #define L2CAP_SUPER_RR 0x00 |
174 | #define L2CAP_SUPER_REJ 0x01 | |
175 | #define L2CAP_SUPER_RNR 0x02 | |
176 | #define L2CAP_SUPER_SREJ 0x03 | |
1c2acffb GP |
177 | |
178 | /* L2CAP Segmentation and Reassembly */ | |
7e0ef6ee AE |
179 | #define L2CAP_SAR_UNSEGMENTED 0x00 |
180 | #define L2CAP_SAR_START 0x01 | |
181 | #define L2CAP_SAR_END 0x02 | |
182 | #define L2CAP_SAR_CONTINUE 0x03 | |
1c2acffb | 183 | |
e2fd318e | 184 | /* L2CAP Command rej. reasons */ |
8d6765aa AE |
185 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
186 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
187 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
e2fd318e | 188 | |
1da177e4 LT |
189 | /* L2CAP structures */ |
190 | struct l2cap_hdr { | |
8e036fc3 AV |
191 | __le16 len; |
192 | __le16 cid; | |
66c853cc | 193 | } __packed; |
1da177e4 | 194 | #define L2CAP_HDR_SIZE 4 |
d43cb289 AE |
195 | #define L2CAP_ENH_HDR_SIZE 6 |
196 | #define L2CAP_EXT_HDR_SIZE 8 | |
197 | ||
198 | #define L2CAP_FCS_SIZE 2 | |
199 | #define L2CAP_SDULEN_SIZE 2 | |
200 | #define L2CAP_PSMLEN_SIZE 2 | |
d5f7ac38 MM |
201 | #define L2CAP_ENH_CTRL_SIZE 2 |
202 | #define L2CAP_EXT_CTRL_SIZE 4 | |
1da177e4 LT |
203 | |
204 | struct l2cap_cmd_hdr { | |
205 | __u8 code; | |
206 | __u8 ident; | |
8e036fc3 | 207 | __le16 len; |
66c853cc | 208 | } __packed; |
1da177e4 LT |
209 | #define L2CAP_CMD_HDR_SIZE 4 |
210 | ||
e2fd318e IK |
211 | struct l2cap_cmd_rej_unk { |
212 | __le16 reason; | |
213 | } __packed; | |
214 | ||
215 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 216 | __le16 reason; |
e2fd318e IK |
217 | __le16 max_mtu; |
218 | } __packed; | |
219 | ||
220 | struct l2cap_cmd_rej_cid { | |
221 | __le16 reason; | |
222 | __le16 scid; | |
223 | __le16 dcid; | |
66c853cc | 224 | } __packed; |
1da177e4 LT |
225 | |
226 | struct l2cap_conn_req { | |
8e036fc3 AV |
227 | __le16 psm; |
228 | __le16 scid; | |
66c853cc | 229 | } __packed; |
1da177e4 LT |
230 | |
231 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
232 | __le16 dcid; |
233 | __le16 scid; | |
234 | __le16 result; | |
235 | __le16 status; | |
66c853cc | 236 | } __packed; |
1da177e4 | 237 | |
2983fd68 AE |
238 | /* protocol/service multiplexer (PSM) */ |
239 | #define L2CAP_PSM_SDP 0x0001 | |
240 | #define L2CAP_PSM_RFCOMM 0x0003 | |
3124b843 | 241 | #define L2CAP_PSM_3DSP 0x0021 |
2983fd68 | 242 | |
3f79410c | 243 | /* channel identifier */ |
8db4dc46 GP |
244 | #define L2CAP_CID_SIGNALING 0x0001 |
245 | #define L2CAP_CID_CONN_LESS 0x0002 | |
466f8004 | 246 | #define L2CAP_CID_A2MP 0x0003 |
073d1cf3 | 247 | #define L2CAP_CID_ATT 0x0004 |
acd7d370 VT |
248 | #define L2CAP_CID_LE_SIGNALING 0x0005 |
249 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
250 | #define L2CAP_CID_DYN_START 0x0040 |
251 | #define L2CAP_CID_DYN_END 0xffff | |
252 | ||
38094c75 | 253 | /* connect/create channel results */ |
47ec1dcd MH |
254 | #define L2CAP_CR_SUCCESS 0x0000 |
255 | #define L2CAP_CR_PEND 0x0001 | |
256 | #define L2CAP_CR_BAD_PSM 0x0002 | |
257 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
258 | #define L2CAP_CR_NO_MEM 0x0004 | |
38094c75 | 259 | #define L2CAP_CR_BAD_AMP 0x0005 |
1da177e4 | 260 | |
38094c75 | 261 | /* connect/create channel status */ |
47ec1dcd MH |
262 | #define L2CAP_CS_NO_INFO 0x0000 |
263 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
264 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
265 | |
266 | struct l2cap_conf_req { | |
8e036fc3 AV |
267 | __le16 dcid; |
268 | __le16 flags; | |
1da177e4 | 269 | __u8 data[0]; |
66c853cc | 270 | } __packed; |
1da177e4 LT |
271 | |
272 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
273 | __le16 scid; |
274 | __le16 flags; | |
275 | __le16 result; | |
1da177e4 | 276 | __u8 data[0]; |
66c853cc | 277 | } __packed; |
1da177e4 | 278 | |
5dee9e7c MH |
279 | #define L2CAP_CONF_SUCCESS 0x0000 |
280 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
281 | #define L2CAP_CONF_REJECT 0x0002 | |
282 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
0e8b207e | 283 | #define L2CAP_CONF_PENDING 0x0004 |
5a9e7057 | 284 | #define L2CAP_CONF_EFS_REJECT 0x0005 |
1da177e4 | 285 | |
59e54bd1 AE |
286 | /* configuration req/rsp continuation flag */ |
287 | #define L2CAP_CONF_FLAG_CONTINUATION 0x0001 | |
288 | ||
1da177e4 LT |
289 | struct l2cap_conf_opt { |
290 | __u8 type; | |
291 | __u8 len; | |
292 | __u8 val[0]; | |
66c853cc | 293 | } __packed; |
1da177e4 LT |
294 | #define L2CAP_CONF_OPT_SIZE 2 |
295 | ||
589d2746 | 296 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 297 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 298 | |
1da177e4 LT |
299 | #define L2CAP_CONF_MTU 0x01 |
300 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
301 | #define L2CAP_CONF_QOS 0x03 | |
302 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 303 | #define L2CAP_CONF_FCS 0x05 |
5a9e7057 | 304 | #define L2CAP_CONF_EFS 0x06 |
6327eb98 | 305 | #define L2CAP_CONF_EWS 0x07 |
1da177e4 LT |
306 | |
307 | #define L2CAP_CONF_MAX_SIZE 22 | |
308 | ||
6464f35f MH |
309 | struct l2cap_conf_rfc { |
310 | __u8 mode; | |
311 | __u8 txwin_size; | |
312 | __u8 max_transmit; | |
313 | __le16 retrans_timeout; | |
314 | __le16 monitor_timeout; | |
315 | __le16 max_pdu_size; | |
66c853cc | 316 | } __packed; |
6464f35f MH |
317 | |
318 | #define L2CAP_MODE_BASIC 0x00 | |
319 | #define L2CAP_MODE_RETRANS 0x01 | |
320 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 321 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 322 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 323 | |
5a9e7057 AE |
324 | struct l2cap_conf_efs { |
325 | __u8 id; | |
326 | __u8 stype; | |
327 | __le16 msdu; | |
328 | __le32 sdu_itime; | |
329 | __le32 acc_lat; | |
330 | __le32 flush_to; | |
331 | } __packed; | |
332 | ||
8f7975b1 AE |
333 | #define L2CAP_SERV_NOTRAFIC 0x00 |
334 | #define L2CAP_SERV_BESTEFFORT 0x01 | |
335 | #define L2CAP_SERV_GUARANTEED 0x02 | |
336 | ||
337 | #define L2CAP_BESTEFFORT_ID 0x01 | |
338 | ||
1da177e4 | 339 | struct l2cap_disconn_req { |
8e036fc3 AV |
340 | __le16 dcid; |
341 | __le16 scid; | |
66c853cc | 342 | } __packed; |
1da177e4 LT |
343 | |
344 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
345 | __le16 dcid; |
346 | __le16 scid; | |
66c853cc | 347 | } __packed; |
1da177e4 LT |
348 | |
349 | struct l2cap_info_req { | |
8e036fc3 | 350 | __le16 type; |
66c853cc | 351 | } __packed; |
1da177e4 LT |
352 | |
353 | struct l2cap_info_rsp { | |
8e036fc3 AV |
354 | __le16 type; |
355 | __le16 result; | |
1da177e4 | 356 | __u8 data[0]; |
66c853cc | 357 | } __packed; |
1da177e4 | 358 | |
38094c75 MM |
359 | struct l2cap_create_chan_req { |
360 | __le16 psm; | |
361 | __le16 scid; | |
362 | __u8 amp_id; | |
363 | } __packed; | |
364 | ||
365 | struct l2cap_create_chan_rsp { | |
366 | __le16 dcid; | |
367 | __le16 scid; | |
368 | __le16 result; | |
369 | __le16 status; | |
370 | } __packed; | |
371 | ||
372 | struct l2cap_move_chan_req { | |
373 | __le16 icid; | |
374 | __u8 dest_amp_id; | |
375 | } __packed; | |
376 | ||
377 | struct l2cap_move_chan_rsp { | |
378 | __le16 icid; | |
379 | __le16 result; | |
380 | } __packed; | |
381 | ||
382 | #define L2CAP_MR_SUCCESS 0x0000 | |
383 | #define L2CAP_MR_PEND 0x0001 | |
384 | #define L2CAP_MR_BAD_ID 0x0002 | |
385 | #define L2CAP_MR_SAME_ID 0x0003 | |
386 | #define L2CAP_MR_NOT_SUPP 0x0004 | |
387 | #define L2CAP_MR_COLLISION 0x0005 | |
388 | #define L2CAP_MR_NOT_ALLOWED 0x0006 | |
389 | ||
390 | struct l2cap_move_chan_cfm { | |
391 | __le16 icid; | |
392 | __le16 result; | |
393 | } __packed; | |
394 | ||
395 | #define L2CAP_MC_CONFIRMED 0x0000 | |
396 | #define L2CAP_MC_UNCONFIRMED 0x0001 | |
397 | ||
398 | struct l2cap_move_chan_cfm_rsp { | |
399 | __le16 icid; | |
400 | } __packed; | |
401 | ||
1da177e4 | 402 | /* info type */ |
8d6765aa AE |
403 | #define L2CAP_IT_CL_MTU 0x0001 |
404 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
405 | #define L2CAP_IT_FIXED_CHAN 0x0003 | |
1da177e4 LT |
406 | |
407 | /* info result */ | |
8d6765aa AE |
408 | #define L2CAP_IR_SUCCESS 0x0000 |
409 | #define L2CAP_IR_NOTSUPP 0x0001 | |
1da177e4 | 410 | |
de73115a CT |
411 | struct l2cap_conn_param_update_req { |
412 | __le16 min; | |
413 | __le16 max; | |
414 | __le16 latency; | |
415 | __le16 to_multiplier; | |
416 | } __packed; | |
417 | ||
418 | struct l2cap_conn_param_update_rsp { | |
419 | __le16 result; | |
420 | } __packed; | |
421 | ||
422 | /* Connection Parameters result */ | |
423 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
424 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
425 | ||
48454079 | 426 | /* ----- L2CAP channels and connections ----- */ |
3c588192 MM |
427 | struct l2cap_seq_list { |
428 | __u16 head; | |
429 | __u16 tail; | |
430 | __u16 mask; | |
431 | __u16 *list; | |
432 | }; | |
433 | ||
434 | #define L2CAP_SEQ_LIST_CLEAR 0xFFFF | |
435 | #define L2CAP_SEQ_LIST_TAIL 0x8000 | |
436 | ||
48454079 | 437 | struct l2cap_chan { |
8c1d787b | 438 | struct l2cap_conn *conn; |
08333283 MM |
439 | struct hci_conn *hs_hcon; |
440 | struct hci_chan *hs_hchan; | |
144ad330 | 441 | struct kref kref; |
8c1d787b | 442 | |
89bc500e GP |
443 | __u8 state; |
444 | ||
7eafc59e | 445 | bdaddr_t dst; |
4f1654e0 | 446 | __u8 dst_type; |
7eafc59e | 447 | bdaddr_t src; |
4f1654e0 | 448 | __u8 src_type; |
fe4128e0 | 449 | __le16 psm; |
4f1654e0 | 450 | __le16 sport; |
fe4128e0 GP |
451 | __u16 dcid; |
452 | __u16 scid; | |
4343478f | 453 | |
0c1bc5c6 GP |
454 | __u16 imtu; |
455 | __u16 omtu; | |
456 | __u16 flush_to; | |
457 | __u8 mode; | |
715ec005 | 458 | __u8 chan_type; |
2ea66482 | 459 | __u8 chan_policy; |
0c1bc5c6 | 460 | |
4343478f | 461 | __u8 sec_level; |
4343478f | 462 | |
fc7f8a7e GP |
463 | __u8 ident; |
464 | ||
73ffa904 GP |
465 | __u8 conf_req[64]; |
466 | __u8 conf_len; | |
467 | __u8 num_conf_req; | |
468 | __u8 num_conf_rsp; | |
469 | ||
47d1ec61 GP |
470 | __u8 fcs; |
471 | ||
6327eb98 | 472 | __u16 tx_win; |
836be934 | 473 | __u16 tx_win_max; |
c20f8e35 | 474 | __u16 ack_win; |
47d1ec61 GP |
475 | __u8 max_tx; |
476 | __u16 retrans_timeout; | |
477 | __u16 monitor_timeout; | |
478 | __u16 mps; | |
479 | ||
d5f7ac38 MM |
480 | __u8 tx_state; |
481 | __u8 rx_state; | |
482 | ||
c1360a1c | 483 | unsigned long conf_state; |
e2ab4353 | 484 | unsigned long conn_state; |
d57b0e8b | 485 | unsigned long flags; |
525cd185 | 486 | |
fffadc08 | 487 | __u8 remote_amp_id; |
08333283 MM |
488 | __u8 local_amp_id; |
489 | __u8 move_id; | |
490 | __u8 move_state; | |
491 | __u8 move_role; | |
492 | ||
fb45de7d AE |
493 | __u16 next_tx_seq; |
494 | __u16 expected_ack_seq; | |
495 | __u16 expected_tx_seq; | |
0b209fae | 496 | __u16 buffer_seq; |
fb45de7d | 497 | __u16 srej_save_reqseq; |
d5f7ac38 | 498 | __u16 last_acked_seq; |
fb45de7d AE |
499 | __u16 frames_sent; |
500 | __u16 unacked_frames; | |
6a026610 | 501 | __u8 retry_count; |
6f61fd47 | 502 | __u16 sdu_len; |
6f61fd47 | 503 | struct sk_buff *sdu; |
84084a31 | 504 | struct sk_buff *sdu_last_frag; |
6f61fd47 | 505 | |
6327eb98 | 506 | __u16 remote_tx_win; |
2c03a7a4 GP |
507 | __u8 remote_max_tx; |
508 | __u16 remote_mps; | |
42e5c802 | 509 | |
5a9e7057 AE |
510 | __u8 local_id; |
511 | __u8 local_stype; | |
512 | __u16 local_msdu; | |
513 | __u32 local_sdu_itime; | |
514 | __u32 local_acc_lat; | |
515 | __u32 local_flush_to; | |
516 | ||
517 | __u8 remote_id; | |
518 | __u8 remote_stype; | |
519 | __u16 remote_msdu; | |
520 | __u32 remote_sdu_itime; | |
521 | __u32 remote_acc_lat; | |
522 | __u32 remote_flush_to; | |
523 | ||
721c4181 GP |
524 | struct delayed_work chan_timer; |
525 | struct delayed_work retrans_timer; | |
526 | struct delayed_work monitor_timer; | |
527 | struct delayed_work ack_timer; | |
528 | ||
58d35f87 GP |
529 | struct sk_buff *tx_send_head; |
530 | struct sk_buff_head tx_q; | |
f1c6775b | 531 | struct sk_buff_head srej_q; |
3c588192 MM |
532 | struct l2cap_seq_list srej_list; |
533 | struct l2cap_seq_list retrans_list; | |
e92c8e70 | 534 | |
f64b993f GP |
535 | struct list_head list; |
536 | struct list_head global_l; | |
80808e43 | 537 | |
f64b993f GP |
538 | void *data; |
539 | struct l2cap_ops *ops; | |
c03b355e | 540 | struct mutex lock; |
80808e43 GP |
541 | }; |
542 | ||
543 | struct l2cap_ops { | |
f64b993f | 544 | char *name; |
80808e43 | 545 | |
80b98027 GP |
546 | struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan); |
547 | int (*recv) (struct l2cap_chan * chan, | |
548 | struct sk_buff *skb); | |
c0df7f6e | 549 | void (*teardown) (struct l2cap_chan *chan, int err); |
80b98027 GP |
550 | void (*close) (struct l2cap_chan *chan); |
551 | void (*state_change) (struct l2cap_chan *chan, | |
53f52121 | 552 | int state, int err); |
54a59aa2 | 553 | void (*ready) (struct l2cap_chan *chan); |
2dc4e510 | 554 | void (*defer) (struct l2cap_chan *chan); |
d97c899b | 555 | void (*resume) (struct l2cap_chan *chan); |
5ec1bbe5 | 556 | void (*set_shutdown) (struct l2cap_chan *chan); |
8d836d71 | 557 | long (*get_sndtimeo) (struct l2cap_chan *chan); |
2f7719ce | 558 | struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, |
90338947 | 559 | unsigned long len, int nb); |
1da177e4 LT |
560 | }; |
561 | ||
562 | struct l2cap_conn { | |
f64b993f GP |
563 | struct hci_conn *hcon; |
564 | struct hci_chan *hchan; | |
1da177e4 | 565 | |
f64b993f | 566 | unsigned int mtu; |
1da177e4 | 567 | |
f64b993f GP |
568 | __u32 feat_mask; |
569 | __u8 fixed_chan_mask; | |
848566b3 | 570 | bool hs_enabled; |
4e8402a3 | 571 | |
f64b993f GP |
572 | __u8 info_state; |
573 | __u8 info_ident; | |
4e8402a3 | 574 | |
f64b993f | 575 | struct delayed_work info_timer; |
4e8402a3 | 576 | |
f64b993f | 577 | spinlock_t lock; |
1da177e4 | 578 | |
f64b993f GP |
579 | struct sk_buff *rx_skb; |
580 | __u32 rx_len; | |
581 | __u8 tx_ident; | |
1da177e4 | 582 | |
f64b993f | 583 | __u8 disc_reason; |
2950f21a | 584 | |
f64b993f GP |
585 | struct delayed_work security_timer; |
586 | struct smp_chan *smp_chan; | |
5d3de7df | 587 | |
f64b993f GP |
588 | struct list_head chan_l; |
589 | struct mutex chan_lock; | |
9c903e37 | 590 | struct kref ref; |
2c8e1411 DH |
591 | struct list_head users; |
592 | }; | |
593 | ||
594 | struct l2cap_user { | |
595 | struct list_head list; | |
596 | int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user); | |
597 | void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user); | |
1da177e4 LT |
598 | }; |
599 | ||
4e8402a3 | 600 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
601 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
602 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 603 | |
715ec005 GP |
604 | #define L2CAP_CHAN_RAW 1 |
605 | #define L2CAP_CHAN_CONN_LESS 2 | |
606 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
416fa752 | 607 | #define L2CAP_CHAN_CONN_FIX_A2MP 4 |
715ec005 | 608 | |
48454079 | 609 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
610 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
611 | ||
612 | struct l2cap_pinfo { | |
f64b993f | 613 | struct bt_sock bt; |
48454079 | 614 | struct l2cap_chan *chan; |
f64b993f | 615 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
616 | }; |
617 | ||
c1360a1c GP |
618 | enum { |
619 | CONF_REQ_SENT, | |
620 | CONF_INPUT_DONE, | |
621 | CONF_OUTPUT_DONE, | |
622 | CONF_MTU_DONE, | |
623 | CONF_MODE_DONE, | |
624 | CONF_CONNECT_PEND, | |
f2592d3e | 625 | CONF_RECV_NO_FCS, |
c1360a1c | 626 | CONF_STATE2_DEVICE, |
6327eb98 | 627 | CONF_EWS_RECV, |
0e8b207e AE |
628 | CONF_LOC_CONF_PEND, |
629 | CONF_REM_CONF_PEND, | |
2827011f | 630 | CONF_NOT_COMPLETE, |
c1360a1c | 631 | }; |
f2fcfcd6 GP |
632 | |
633 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
634 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 635 | |
e2ab4353 | 636 | enum { |
e2ab4353 GP |
637 | CONN_SREJ_SENT, |
638 | CONN_WAIT_F, | |
639 | CONN_SREJ_ACT, | |
640 | CONN_SEND_PBIT, | |
641 | CONN_REMOTE_BUSY, | |
642 | CONN_LOCAL_BUSY, | |
643 | CONN_REJ_ACT, | |
644 | CONN_SEND_FBIT, | |
645 | CONN_RNR_SENT, | |
e2ab4353 | 646 | }; |
e90bac06 | 647 | |
d57b0e8b AE |
648 | /* Definitions for flags in l2cap_chan */ |
649 | enum { | |
43bd0f32 | 650 | FLAG_ROLE_SWITCH, |
15770b1a | 651 | FLAG_FORCE_ACTIVE, |
ecf61bdb | 652 | FLAG_FORCE_RELIABLE, |
d57b0e8b | 653 | FLAG_FLUSHABLE, |
6327eb98 | 654 | FLAG_EXT_CTRL, |
5a9e7057 | 655 | FLAG_EFS_ENABLE, |
bdc25783 | 656 | FLAG_DEFER_SETUP, |
d57b0e8b AE |
657 | }; |
658 | ||
d5f7ac38 MM |
659 | enum { |
660 | L2CAP_TX_STATE_XMIT, | |
661 | L2CAP_TX_STATE_WAIT_F, | |
662 | }; | |
663 | ||
664 | enum { | |
665 | L2CAP_RX_STATE_RECV, | |
666 | L2CAP_RX_STATE_SREJ_SENT, | |
08333283 MM |
667 | L2CAP_RX_STATE_MOVE, |
668 | L2CAP_RX_STATE_WAIT_P, | |
669 | L2CAP_RX_STATE_WAIT_F, | |
d5f7ac38 MM |
670 | }; |
671 | ||
672 | enum { | |
673 | L2CAP_TXSEQ_EXPECTED, | |
674 | L2CAP_TXSEQ_EXPECTED_SREJ, | |
675 | L2CAP_TXSEQ_UNEXPECTED, | |
676 | L2CAP_TXSEQ_UNEXPECTED_SREJ, | |
677 | L2CAP_TXSEQ_DUPLICATE, | |
678 | L2CAP_TXSEQ_DUPLICATE_SREJ, | |
679 | L2CAP_TXSEQ_INVALID, | |
680 | L2CAP_TXSEQ_INVALID_IGNORE, | |
681 | }; | |
682 | ||
683 | enum { | |
684 | L2CAP_EV_DATA_REQUEST, | |
685 | L2CAP_EV_LOCAL_BUSY_DETECTED, | |
686 | L2CAP_EV_LOCAL_BUSY_CLEAR, | |
687 | L2CAP_EV_RECV_REQSEQ_AND_FBIT, | |
688 | L2CAP_EV_RECV_FBIT, | |
689 | L2CAP_EV_RETRANS_TO, | |
690 | L2CAP_EV_MONITOR_TO, | |
691 | L2CAP_EV_EXPLICIT_POLL, | |
692 | L2CAP_EV_RECV_IFRAME, | |
693 | L2CAP_EV_RECV_RR, | |
694 | L2CAP_EV_RECV_REJ, | |
695 | L2CAP_EV_RECV_RNR, | |
696 | L2CAP_EV_RECV_SREJ, | |
697 | L2CAP_EV_RECV_FRAME, | |
698 | }; | |
699 | ||
08333283 MM |
700 | enum { |
701 | L2CAP_MOVE_ROLE_NONE, | |
702 | L2CAP_MOVE_ROLE_INITIATOR, | |
703 | L2CAP_MOVE_ROLE_RESPONDER, | |
704 | }; | |
705 | ||
706 | enum { | |
707 | L2CAP_MOVE_STABLE, | |
708 | L2CAP_MOVE_WAIT_REQ, | |
709 | L2CAP_MOVE_WAIT_RSP, | |
710 | L2CAP_MOVE_WAIT_RSP_SUCCESS, | |
711 | L2CAP_MOVE_WAIT_CONFIRM, | |
712 | L2CAP_MOVE_WAIT_CONFIRM_RSP, | |
713 | L2CAP_MOVE_WAIT_LOGICAL_COMP, | |
714 | L2CAP_MOVE_WAIT_LOGICAL_CFM, | |
715 | L2CAP_MOVE_WAIT_LOCAL_BUSY, | |
716 | L2CAP_MOVE_WAIT_PREPARE, | |
717 | }; | |
718 | ||
30648372 JK |
719 | void l2cap_chan_hold(struct l2cap_chan *c); |
720 | void l2cap_chan_put(struct l2cap_chan *c); | |
371fd835 | 721 | |
c03b355e AE |
722 | static inline void l2cap_chan_lock(struct l2cap_chan *chan) |
723 | { | |
724 | mutex_lock(&chan->lock); | |
725 | } | |
726 | ||
727 | static inline void l2cap_chan_unlock(struct l2cap_chan *chan) | |
728 | { | |
729 | mutex_unlock(&chan->lock); | |
730 | } | |
731 | ||
c2ec9c1b | 732 | static inline void l2cap_set_timer(struct l2cap_chan *chan, |
6f74b6f3 | 733 | struct delayed_work *work, long timeout) |
c2ec9c1b | 734 | { |
e05dcc32 | 735 | BT_DBG("chan %p state %s timeout %ld", chan, |
6f74b6f3 | 736 | state_to_string(chan->state), timeout); |
c2ec9c1b | 737 | |
6f74b6f3 AE |
738 | /* If delayed work cancelled do not hold(chan) |
739 | since it is already done with previous set_timer */ | |
17cd3f37 | 740 | if (!cancel_delayed_work(work)) |
371fd835 | 741 | l2cap_chan_hold(chan); |
6f74b6f3 | 742 | |
c2ec9c1b GP |
743 | schedule_delayed_work(work, timeout); |
744 | } | |
745 | ||
75b93b59 | 746 | static inline bool l2cap_clear_timer(struct l2cap_chan *chan, |
6f74b6f3 | 747 | struct delayed_work *work) |
c2ec9c1b | 748 | { |
75b93b59 SJ |
749 | bool ret; |
750 | ||
6f74b6f3 AE |
751 | /* put(chan) if delayed work cancelled otherwise it |
752 | is done in delayed work function */ | |
17cd3f37 | 753 | ret = cancel_delayed_work(work); |
75b93b59 | 754 | if (ret) |
371fd835 | 755 | l2cap_chan_put(chan); |
75b93b59 SJ |
756 | |
757 | return ret; | |
c2ec9c1b GP |
758 | } |
759 | ||
c9b66675 GP |
760 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
761 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
1a09bcb9 | 762 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) |
1a09bcb9 GP |
763 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) |
764 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
b83ddfe2 | 765 | msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO)); |
1a09bcb9 | 766 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) |
c74e560c | 767 | |
836be934 AE |
768 | static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) |
769 | { | |
5a364bd3 MM |
770 | if (seq1 >= seq2) |
771 | return seq1 - seq2; | |
772 | else | |
773 | return chan->tx_win_max + 1 - seq2 + seq1; | |
836be934 AE |
774 | } |
775 | ||
776 | static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) | |
777 | { | |
778 | return (seq + 1) % (chan->tx_win_max + 1); | |
779 | } | |
780 | ||
7e1af8a3 GP |
781 | static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan) |
782 | { | |
783 | return NULL; | |
784 | } | |
785 | ||
786 | static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err) | |
787 | { | |
788 | } | |
789 | ||
790 | static inline void l2cap_chan_no_ready(struct l2cap_chan *chan) | |
791 | { | |
792 | } | |
1da177e4 | 793 | |
2dc4e510 GP |
794 | static inline void l2cap_chan_no_defer(struct l2cap_chan *chan) |
795 | { | |
796 | } | |
797 | ||
2ce5fb51 MH |
798 | static inline void l2cap_chan_no_resume(struct l2cap_chan *chan) |
799 | { | |
800 | } | |
801 | ||
5ec1bbe5 GP |
802 | static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan) |
803 | { | |
804 | } | |
805 | ||
8d836d71 GP |
806 | static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan) |
807 | { | |
808 | return 0; | |
809 | } | |
810 | ||
eb939922 | 811 | extern bool disable_ertm; |
bb58f747 GP |
812 | |
813 | int l2cap_init_sockets(void); | |
814 | void l2cap_cleanup_sockets(void); | |
b3916db3 | 815 | bool l2cap_is_socket(struct socket *sock); |
bb58f747 | 816 | |
8c1d787b | 817 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
68983259 | 818 | |
9e4425ff GP |
819 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
820 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
821 | ||
eef1d9b6 | 822 | struct l2cap_chan *l2cap_chan_create(void); |
0f852724 | 823 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
cbe8fed4 | 824 | int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, |
8e9f9892 | 825 | bdaddr_t *dst, u8 dst_type); |
5e59b791 LAD |
826 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, |
827 | u32 priority); | |
e328140f | 828 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
d45fc423 | 829 | int l2cap_chan_check_security(struct l2cap_chan *chan); |
bd4b1653 | 830 | void l2cap_chan_set_defaults(struct l2cap_chan *chan); |
466f8004 AE |
831 | int l2cap_ertm_init(struct l2cap_chan *chan); |
832 | void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); | |
93c3e8f5 | 833 | void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); |
466f8004 | 834 | void l2cap_chan_del(struct l2cap_chan *chan, int err); |
2766be48 | 835 | void l2cap_send_conn_req(struct l2cap_chan *chan); |
3f7a56c4 | 836 | void l2cap_move_start(struct l2cap_chan *chan); |
27695fb4 AE |
837 | void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan, |
838 | u8 status); | |
a514b17f | 839 | void __l2cap_physical_cfm(struct l2cap_chan *chan, int result); |
bb58f747 | 840 | |
9c903e37 DH |
841 | void l2cap_conn_get(struct l2cap_conn *conn); |
842 | void l2cap_conn_put(struct l2cap_conn *conn); | |
843 | ||
2c8e1411 DH |
844 | int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user); |
845 | void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user); | |
846 | ||
1da177e4 | 847 | #endif /* __L2CAP_H */ |