blob: f566aa1f0a4c9f64229af015ec7e0d16da817791 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __L2CAP_H
26#define __L2CAP_H
27
28/* L2CAP defaults */
29#define L2CAP_DEFAULT_MTU 672
30#define L2CAP_DEFAULT_FLUSH_TO 0xFFFF
31
Marcel Holtmann4e8402a2007-10-20 13:37:56 +020032#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
33#define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35/* L2CAP socket address */
36struct sockaddr_l2 {
37 sa_family_t l2_family;
Al Viro8e036fc2007-07-29 00:16:36 -070038 __le16 l2_psm;
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 bdaddr_t l2_bdaddr;
Marcel Holtmannf29972d2009-02-12 05:07:45 +010040 __le16 l2_cid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041};
42
43/* L2CAP socket options */
44#define L2CAP_OPTIONS 0x01
45struct l2cap_options {
46 __u16 omtu;
47 __u16 imtu;
48 __u16 flush_to;
49 __u8 mode;
50};
51
52#define L2CAP_CONNINFO 0x02
53struct l2cap_conninfo {
54 __u16 hci_handle;
55 __u8 dev_class[3];
56};
57
58#define L2CAP_LM 0x03
59#define L2CAP_LM_MASTER 0x0001
60#define L2CAP_LM_AUTH 0x0002
61#define L2CAP_LM_ENCRYPT 0x0004
62#define L2CAP_LM_TRUSTED 0x0008
63#define L2CAP_LM_RELIABLE 0x0010
64#define L2CAP_LM_SECURE 0x0020
65
66/* L2CAP command codes */
67#define L2CAP_COMMAND_REJ 0x01
68#define L2CAP_CONN_REQ 0x02
69#define L2CAP_CONN_RSP 0x03
70#define L2CAP_CONF_REQ 0x04
71#define L2CAP_CONF_RSP 0x05
72#define L2CAP_DISCONN_REQ 0x06
73#define L2CAP_DISCONN_RSP 0x07
74#define L2CAP_ECHO_REQ 0x08
75#define L2CAP_ECHO_RSP 0x09
76#define L2CAP_INFO_REQ 0x0a
77#define L2CAP_INFO_RSP 0x0b
78
79/* L2CAP structures */
80struct l2cap_hdr {
Al Viro8e036fc2007-07-29 00:16:36 -070081 __le16 len;
82 __le16 cid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083} __attribute__ ((packed));
84#define L2CAP_HDR_SIZE 4
85
86struct l2cap_cmd_hdr {
87 __u8 code;
88 __u8 ident;
Al Viro8e036fc2007-07-29 00:16:36 -070089 __le16 len;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090} __attribute__ ((packed));
91#define L2CAP_CMD_HDR_SIZE 4
92
93struct l2cap_cmd_rej {
Al Viro8e036fc2007-07-29 00:16:36 -070094 __le16 reason;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095} __attribute__ ((packed));
96
97struct l2cap_conn_req {
Al Viro8e036fc2007-07-29 00:16:36 -070098 __le16 psm;
99 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100} __attribute__ ((packed));
101
102struct l2cap_conn_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700103 __le16 dcid;
104 __le16 scid;
105 __le16 result;
106 __le16 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107} __attribute__ ((packed));
108
109/* connect result */
110#define L2CAP_CR_SUCCESS 0x0000
111#define L2CAP_CR_PEND 0x0001
112#define L2CAP_CR_BAD_PSM 0x0002
113#define L2CAP_CR_SEC_BLOCK 0x0003
114#define L2CAP_CR_NO_MEM 0x0004
115
116/* connect status */
117#define L2CAP_CS_NO_INFO 0x0000
118#define L2CAP_CS_AUTHEN_PEND 0x0001
119#define L2CAP_CS_AUTHOR_PEND 0x0002
120
121struct l2cap_conf_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700122 __le16 dcid;
123 __le16 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 __u8 data[0];
125} __attribute__ ((packed));
126
127struct l2cap_conf_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700128 __le16 scid;
129 __le16 flags;
130 __le16 result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 __u8 data[0];
132} __attribute__ ((packed));
133
Marcel Holtmann5dee9e72007-05-24 14:27:19 +0200134#define L2CAP_CONF_SUCCESS 0x0000
135#define L2CAP_CONF_UNACCEPT 0x0001
136#define L2CAP_CONF_REJECT 0x0002
137#define L2CAP_CONF_UNKNOWN 0x0003
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139struct l2cap_conf_opt {
140 __u8 type;
141 __u8 len;
142 __u8 val[0];
143} __attribute__ ((packed));
144#define L2CAP_CONF_OPT_SIZE 2
145
146#define L2CAP_CONF_MTU 0x01
147#define L2CAP_CONF_FLUSH_TO 0x02
148#define L2CAP_CONF_QOS 0x03
149#define L2CAP_CONF_RFC 0x04
150
151#define L2CAP_CONF_MAX_SIZE 22
152
Marcel Holtmann6464f352007-10-20 13:39:51 +0200153struct l2cap_conf_rfc {
154 __u8 mode;
155 __u8 txwin_size;
156 __u8 max_transmit;
157 __le16 retrans_timeout;
158 __le16 monitor_timeout;
159 __le16 max_pdu_size;
160} __attribute__ ((packed));
161
162#define L2CAP_MODE_BASIC 0x00
163#define L2CAP_MODE_RETRANS 0x01
164#define L2CAP_MODE_FLOWCTL 0x02
165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166struct l2cap_disconn_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700167 __le16 dcid;
168 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169} __attribute__ ((packed));
170
171struct l2cap_disconn_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700172 __le16 dcid;
173 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174} __attribute__ ((packed));
175
176struct l2cap_info_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700177 __le16 type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178} __attribute__ ((packed));
179
180struct l2cap_info_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700181 __le16 type;
182 __le16 result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 __u8 data[0];
184} __attribute__ ((packed));
185
186/* info type */
187#define L2CAP_IT_CL_MTU 0x0001
188#define L2CAP_IT_FEAT_MASK 0x0002
Marcel Holtmanne1027a72009-02-09 09:18:02 +0100189#define L2CAP_IT_FIXED_CHAN 0x0003
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
191/* info result */
192#define L2CAP_IR_SUCCESS 0x0000
193#define L2CAP_IR_NOTSUPP 0x0001
194
195/* ----- L2CAP connections ----- */
196struct l2cap_chan_list {
197 struct sock *head;
198 rwlock_t lock;
199 long num;
200};
201
202struct l2cap_conn {
203 struct hci_conn *hcon;
204
205 bdaddr_t *dst;
206 bdaddr_t *src;
207
208 unsigned int mtu;
209
Marcel Holtmann4e8402a2007-10-20 13:37:56 +0200210 __u32 feat_mask;
211
212 __u8 info_state;
213 __u8 info_ident;
214
215 struct timer_list info_timer;
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 spinlock_t lock;
218
219 struct sk_buff *rx_skb;
220 __u32 rx_len;
221 __u8 rx_ident;
222 __u8 tx_ident;
223
Marcel Holtmann2950f212009-02-12 14:02:50 +0100224 __u8 disc_reason;
225
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 struct l2cap_chan_list chan_list;
227};
228
Marcel Holtmann4e8402a2007-10-20 13:37:56 +0200229#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
Marcel Holtmann984947d2009-02-06 23:35:19 +0100230#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
231#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
Marcel Holtmann4e8402a2007-10-20 13:37:56 +0200232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233/* ----- L2CAP channel and socket info ----- */
234#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
235
236struct l2cap_pinfo {
237 struct bt_sock bt;
Al Viro8e036fc2007-07-29 00:16:36 -0700238 __le16 psm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 __u16 dcid;
240 __u16 scid;
241
242 __u16 imtu;
243 __u16 omtu;
244 __u16 flush_to;
Marcel Holtmann2af6b9d2009-01-15 21:58:38 +0100245 __u8 sec_level;
246 __u8 role_switch;
247 __u8 force_reliable;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Marcel Holtmann5dee9e72007-05-24 14:27:19 +0200249 __u8 conf_req[64];
250 __u8 conf_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 __u8 conf_state;
252 __u8 conf_retry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
254 __u8 ident;
255
Al Viro8e036fc2007-07-29 00:16:36 -0700256 __le16 sport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
258 struct l2cap_conn *conn;
259 struct sock *next_c;
260 struct sock *prev_c;
261};
262
Marcel Holtmann861d6882007-10-20 13:37:06 +0200263#define L2CAP_CONF_REQ_SENT 0x01
264#define L2CAP_CONF_INPUT_DONE 0x02
265#define L2CAP_CONF_OUTPUT_DONE 0x04
Marcel Holtmann6a8d3012009-02-06 23:56:36 +0100266#define L2CAP_CONF_CONNECT_PEND 0x80
Marcel Holtmann861d6882007-10-20 13:37:06 +0200267
268#define L2CAP_CONF_MAX_RETRIES 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
270void l2cap_load(void);
271
272#endif /* __L2CAP_H */