1 /*
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 (40000) /* 40 seconds */
33 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
34
35 /* L2CAP socket address */
36 struct sockaddr_l2 {
37 sa_family_t l2_family;
38 __le16 l2_psm;
39 bdaddr_t l2_bdaddr;
40 };
41
42 /* L2CAP socket options */
43 #define L2CAP_OPTIONS 0x01
44 struct l2cap_options {
45 __u16 omtu;
46 __u16 imtu;
47 __u16 flush_to;
48 __u8 mode;
49 };
50
51 #define L2CAP_CONNINFO 0x02
52 struct l2cap_conninfo {
53 __u16 hci_handle;
54 __u8 dev_class[3];
55 };
56
57 #define L2CAP_LM 0x03
58 #define L2CAP_LM_MASTER 0x0001
59 #define L2CAP_LM_AUTH 0x0002
60 #define L2CAP_LM_ENCRYPT 0x0004
61 #define L2CAP_LM_TRUSTED 0x0008
62 #define L2CAP_LM_RELIABLE 0x0010
63 #define L2CAP_LM_SECURE 0x0020
64
65 /* L2CAP command codes */
66 #define L2CAP_COMMAND_REJ 0x01
67 #define L2CAP_CONN_REQ 0x02
68 #define L2CAP_CONN_RSP 0x03
69 #define L2CAP_CONF_REQ 0x04
70 #define L2CAP_CONF_RSP 0x05
71 #define L2CAP_DISCONN_REQ 0x06
72 #define L2CAP_DISCONN_RSP 0x07
73 #define L2CAP_ECHO_REQ 0x08
74 #define L2CAP_ECHO_RSP 0x09
75 #define L2CAP_INFO_REQ 0x0a
76 #define L2CAP_INFO_RSP 0x0b
77
78 /* L2CAP structures */
79 struct l2cap_hdr {
80 __le16 len;
81 __le16 cid;
82 } __attribute__ ((packed));
83 #define L2CAP_HDR_SIZE 4
84
85 struct l2cap_cmd_hdr {
86 __u8 code;
87 __u8 ident;
88 __le16 len;
89 } __attribute__ ((packed));
90 #define L2CAP_CMD_HDR_SIZE 4
91
92 struct l2cap_cmd_rej {
93 __le16 reason;
94 } __attribute__ ((packed));
95
96 struct l2cap_conn_req {
97 __le16 psm;
98 __le16 scid;
99 } __attribute__ ((packed));
100
101 struct l2cap_conn_rsp {
102 __le16 dcid;
103 __le16 scid;
104 __le16 result;
105 __le16 status;
106 } __attribute__ ((packed));
107
108 /* connect result */
109 #define L2CAP_CR_SUCCESS 0x0000
110 #define L2CAP_CR_PEND 0x0001
111 #define L2CAP_CR_BAD_PSM 0x0002
112 #define L2CAP_CR_SEC_BLOCK 0x0003
113 #define L2CAP_CR_NO_MEM 0x0004
114
115 /* connect status */
116 #define L2CAP_CS_NO_INFO 0x0000
117 #define L2CAP_CS_AUTHEN_PEND 0x0001
118 #define L2CAP_CS_AUTHOR_PEND 0x0002
119
120 struct l2cap_conf_req {
121 __le16 dcid;
122 __le16 flags;
123 __u8 data[0];
124 } __attribute__ ((packed));
125
126 struct l2cap_conf_rsp {
127 __le16 scid;
128 __le16 flags;
129 __le16 result;
130 __u8 data[0];
131 } __attribute__ ((packed));
132
133 #define L2CAP_CONF_SUCCESS 0x0000
134 #define L2CAP_CONF_UNACCEPT 0x0001
135 #define L2CAP_CONF_REJECT 0x0002
136 #define L2CAP_CONF_UNKNOWN 0x0003
137
138 struct l2cap_conf_opt {
139 __u8 type;
140 __u8 len;
141 __u8 val[0];
142 } __attribute__ ((packed));
143 #define L2CAP_CONF_OPT_SIZE 2
144
145 #define L2CAP_CONF_MTU 0x01
146 #define L2CAP_CONF_FLUSH_TO 0x02
147 #define L2CAP_CONF_QOS 0x03
148 #define L2CAP_CONF_RFC 0x04
149
150 #define L2CAP_CONF_MAX_SIZE 22
151
152 struct l2cap_conf_rfc {
153 __u8 mode;
154 __u8 txwin_size;
155 __u8 max_transmit;
156 __le16 retrans_timeout;
157 __le16 monitor_timeout;
158 __le16 max_pdu_size;
159 } __attribute__ ((packed));
160
161 #define L2CAP_MODE_BASIC 0x00
162 #define L2CAP_MODE_RETRANS 0x01
163 #define L2CAP_MODE_FLOWCTL 0x02
164
165 struct l2cap_disconn_req {
166 __le16 dcid;
167 __le16 scid;
168 } __attribute__ ((packed));
169
170 struct l2cap_disconn_rsp {
171 __le16 dcid;
172 __le16 scid;
173 } __attribute__ ((packed));
174
175 struct l2cap_info_req {
176 __le16 type;
177 } __attribute__ ((packed));
178
179 struct l2cap_info_rsp {
180 __le16 type;
181 __le16 result;
182 __u8 data[0];
183 } __attribute__ ((packed));
184
185 /* info type */
186 #define L2CAP_IT_CL_MTU 0x0001
187 #define L2CAP_IT_FEAT_MASK 0x0002
188
189 /* info result */
190 #define L2CAP_IR_SUCCESS 0x0000
191 #define L2CAP_IR_NOTSUPP 0x0001
192
193 /* ----- L2CAP connections ----- */
194 struct l2cap_chan_list {
195 struct sock *head;
196 rwlock_t lock;
197 long num;
198 };
199
200 struct l2cap_conn {
201 struct hci_conn *hcon;
202
203 bdaddr_t *dst;
204 bdaddr_t *src;
205
206 unsigned int mtu;
207
208 __u32 feat_mask;
209
210 __u8 info_state;
211 __u8 info_ident;
212
213 struct timer_list info_timer;
214
215 spinlock_t lock;
216
217 struct sk_buff *rx_skb;
218 __u32 rx_len;
219 __u8 rx_ident;
220 __u8 tx_ident;
221
222 struct l2cap_chan_list chan_list;
223 };
224
225 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
226 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x02
227
228 /* ----- L2CAP channel and socket info ----- */
229 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
230
231 struct l2cap_pinfo {
232 struct bt_sock bt;
233 __le16 psm;
234 __u16 dcid;
235 __u16 scid;
236
237 __u16 imtu;
238 __u16 omtu;
239 __u16 flush_to;
240
241 __u32 link_mode;
242
243 __u8 conf_req[64];
244 __u8 conf_len;
245 __u8 conf_state;
246 __u8 conf_retry;
247
248 __u8 ident;
249
250 __le16 sport;
251
252 struct l2cap_conn *conn;
253 struct sock *next_c;
254 struct sock *prev_c;
255 };
256
257 #define L2CAP_CONF_REQ_SENT 0x01
258 #define L2CAP_CONF_INPUT_DONE 0x02
259 #define L2CAP_CONF_OUTPUT_DONE 0x04
260
261 #define L2CAP_CONF_MAX_RETRIES 2
262
263 void l2cap_load(void);
264
265 #endif /* __L2CAP_H */
266
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