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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
32#define L2CAP_CONN_TIMEOUT (HZ * 40)
33
34/* L2CAP socket address */
35struct sockaddr_l2 {
36 sa_family_t l2_family;
Al Viro8e036fc2007-07-29 00:16:36 -070037 __le16 l2_psm;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 bdaddr_t l2_bdaddr;
39};
40
41/* L2CAP socket options */
42#define L2CAP_OPTIONS 0x01
43struct l2cap_options {
44 __u16 omtu;
45 __u16 imtu;
46 __u16 flush_to;
47 __u8 mode;
48};
49
50#define L2CAP_CONNINFO 0x02
51struct l2cap_conninfo {
52 __u16 hci_handle;
53 __u8 dev_class[3];
54};
55
56#define L2CAP_LM 0x03
57#define L2CAP_LM_MASTER 0x0001
58#define L2CAP_LM_AUTH 0x0002
59#define L2CAP_LM_ENCRYPT 0x0004
60#define L2CAP_LM_TRUSTED 0x0008
61#define L2CAP_LM_RELIABLE 0x0010
62#define L2CAP_LM_SECURE 0x0020
63
64/* L2CAP command codes */
65#define L2CAP_COMMAND_REJ 0x01
66#define L2CAP_CONN_REQ 0x02
67#define L2CAP_CONN_RSP 0x03
68#define L2CAP_CONF_REQ 0x04
69#define L2CAP_CONF_RSP 0x05
70#define L2CAP_DISCONN_REQ 0x06
71#define L2CAP_DISCONN_RSP 0x07
72#define L2CAP_ECHO_REQ 0x08
73#define L2CAP_ECHO_RSP 0x09
74#define L2CAP_INFO_REQ 0x0a
75#define L2CAP_INFO_RSP 0x0b
76
77/* L2CAP structures */
78struct l2cap_hdr {
Al Viro8e036fc2007-07-29 00:16:36 -070079 __le16 len;
80 __le16 cid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081} __attribute__ ((packed));
82#define L2CAP_HDR_SIZE 4
83
84struct l2cap_cmd_hdr {
85 __u8 code;
86 __u8 ident;
Al Viro8e036fc2007-07-29 00:16:36 -070087 __le16 len;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088} __attribute__ ((packed));
89#define L2CAP_CMD_HDR_SIZE 4
90
91struct l2cap_cmd_rej {
Al Viro8e036fc2007-07-29 00:16:36 -070092 __le16 reason;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093} __attribute__ ((packed));
94
95struct l2cap_conn_req {
Al Viro8e036fc2007-07-29 00:16:36 -070096 __le16 psm;
97 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -070098} __attribute__ ((packed));
99
100struct l2cap_conn_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700101 __le16 dcid;
102 __le16 scid;
103 __le16 result;
104 __le16 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105} __attribute__ ((packed));
106
107/* connect result */
108#define L2CAP_CR_SUCCESS 0x0000
109#define L2CAP_CR_PEND 0x0001
110#define L2CAP_CR_BAD_PSM 0x0002
111#define L2CAP_CR_SEC_BLOCK 0x0003
112#define L2CAP_CR_NO_MEM 0x0004
113
114/* connect status */
115#define L2CAP_CS_NO_INFO 0x0000
116#define L2CAP_CS_AUTHEN_PEND 0x0001
117#define L2CAP_CS_AUTHOR_PEND 0x0002
118
119struct l2cap_conf_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700120 __le16 dcid;
121 __le16 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 __u8 data[0];
123} __attribute__ ((packed));
124
125struct l2cap_conf_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700126 __le16 scid;
127 __le16 flags;
128 __le16 result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 __u8 data[0];
130} __attribute__ ((packed));
131
Marcel Holtmann5dee9e72007-05-24 14:27:19 +0200132#define L2CAP_CONF_SUCCESS 0x0000
133#define L2CAP_CONF_UNACCEPT 0x0001
134#define L2CAP_CONF_REJECT 0x0002
135#define L2CAP_CONF_UNKNOWN 0x0003
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137struct l2cap_conf_opt {
138 __u8 type;
139 __u8 len;
140 __u8 val[0];
141} __attribute__ ((packed));
142#define L2CAP_CONF_OPT_SIZE 2
143
144#define L2CAP_CONF_MTU 0x01
145#define L2CAP_CONF_FLUSH_TO 0x02
146#define L2CAP_CONF_QOS 0x03
147#define L2CAP_CONF_RFC 0x04
148
149#define L2CAP_CONF_MAX_SIZE 22
150
151struct l2cap_disconn_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700152 __le16 dcid;
153 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154} __attribute__ ((packed));
155
156struct l2cap_disconn_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700157 __le16 dcid;
158 __le16 scid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159} __attribute__ ((packed));
160
161struct l2cap_info_req {
Al Viro8e036fc2007-07-29 00:16:36 -0700162 __le16 type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 __u8 data[0];
164} __attribute__ ((packed));
165
166struct l2cap_info_rsp {
Al Viro8e036fc2007-07-29 00:16:36 -0700167 __le16 type;
168 __le16 result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 __u8 data[0];
170} __attribute__ ((packed));
171
172/* info type */
173#define L2CAP_IT_CL_MTU 0x0001
174#define L2CAP_IT_FEAT_MASK 0x0002
175
176/* info result */
177#define L2CAP_IR_SUCCESS 0x0000
178#define L2CAP_IR_NOTSUPP 0x0001
179
180/* ----- L2CAP connections ----- */
181struct l2cap_chan_list {
182 struct sock *head;
183 rwlock_t lock;
184 long num;
185};
186
187struct l2cap_conn {
188 struct hci_conn *hcon;
189
190 bdaddr_t *dst;
191 bdaddr_t *src;
192
193 unsigned int mtu;
194
195 spinlock_t lock;
196
197 struct sk_buff *rx_skb;
198 __u32 rx_len;
199 __u8 rx_ident;
200 __u8 tx_ident;
201
202 struct l2cap_chan_list chan_list;
203};
204
205/* ----- L2CAP channel and socket info ----- */
206#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
207
208struct l2cap_pinfo {
209 struct bt_sock bt;
Al Viro8e036fc2007-07-29 00:16:36 -0700210 __le16 psm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 __u16 dcid;
212 __u16 scid;
213
214 __u16 imtu;
215 __u16 omtu;
216 __u16 flush_to;
217
218 __u32 link_mode;
219
Marcel Holtmann5dee9e72007-05-24 14:27:19 +0200220 __u8 conf_req[64];
221 __u8 conf_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 __u8 conf_state;
223 __u8 conf_retry;
224 __u16 conf_mtu;
225
226 __u8 ident;
227
Al Viro8e036fc2007-07-29 00:16:36 -0700228 __le16 sport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
230 struct l2cap_conn *conn;
231 struct sock *next_c;
232 struct sock *prev_c;
233};
234
235#define L2CAP_CONF_REQ_SENT 0x01
236#define L2CAP_CONF_INPUT_DONE 0x02
237#define L2CAP_CONF_OUTPUT_DONE 0x04
238#define L2CAP_CONF_MAX_RETRIES 2
239
240void l2cap_load(void);
241
242#endif /* __L2CAP_H */