2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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;
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.
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.
29 #define L2CAP_DEFAULT_MTU 672
30 #define L2CAP_DEFAULT_MIN_MTU 48
31 #define L2CAP_DEFAULT_FLUSH_TO 0xffff
32 #define L2CAP_DEFAULT_TX_WINDOW 63
33 #define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5)
34 #define L2CAP_DEFAULT_MAX_RECEIVE 1
35 #define L2CAP_DEFAULT_RETRANS_TO 300 /* 300 milliseconds */
36 #define L2CAP_DEFAULT_MONITOR_TO 1000 /* 1 second */
37 #define L2CAP_DEFAULT_MAX_PDU_SIZE 672
39 #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
40 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
42 /* L2CAP socket address */
44 sa_family_t l2_family;
50 /* L2CAP socket options */
51 #define L2CAP_OPTIONS 0x01
52 struct l2cap_options {
59 #define L2CAP_CONNINFO 0x02
60 struct l2cap_conninfo {
66 #define L2CAP_LM_MASTER 0x0001
67 #define L2CAP_LM_AUTH 0x0002
68 #define L2CAP_LM_ENCRYPT 0x0004
69 #define L2CAP_LM_TRUSTED 0x0008
70 #define L2CAP_LM_RELIABLE 0x0010
71 #define L2CAP_LM_SECURE 0x0020
73 /* L2CAP command codes */
74 #define L2CAP_COMMAND_REJ 0x01
75 #define L2CAP_CONN_REQ 0x02
76 #define L2CAP_CONN_RSP 0x03
77 #define L2CAP_CONF_REQ 0x04
78 #define L2CAP_CONF_RSP 0x05
79 #define L2CAP_DISCONN_REQ 0x06
80 #define L2CAP_DISCONN_RSP 0x07
81 #define L2CAP_ECHO_REQ 0x08
82 #define L2CAP_ECHO_RSP 0x09
83 #define L2CAP_INFO_REQ 0x0a
84 #define L2CAP_INFO_RSP 0x0b
86 /* L2CAP feature mask */
87 #define L2CAP_FEAT_FLOWCTL 0x00000001
88 #define L2CAP_FEAT_RETRANS 0x00000002
89 #define L2CAP_FEAT_ERTM 0x00000008
90 #define L2CAP_FEAT_STREAMING 0x00000010
91 #define L2CAP_FEAT_FCS 0x00000020
92 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
94 /* L2CAP checksum option */
95 #define L2CAP_FCS_NONE 0x00
96 #define L2CAP_FCS_CRC16 0x01
98 /* L2CAP Control Field bit masks */
99 #define L2CAP_CTRL_SAR 0xC000
100 #define L2CAP_CTRL_REQSEQ 0x3F00
101 #define L2CAP_CTRL_TXSEQ 0x007E
102 #define L2CAP_CTRL_RETRANS 0x0080
103 #define L2CAP_CTRL_FINAL 0x0080
104 #define L2CAP_CTRL_POLL 0x0010
105 #define L2CAP_CTRL_SUPERVISE 0x000C
106 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
108 #define L2CAP_CTRL_TXSEQ_SHIFT 1
109 #define L2CAP_CTRL_REQSEQ_SHIFT 8
111 /* L2CAP Supervisory Function */
112 #define L2CAP_SUPER_RCV_READY 0x0000
113 #define L2CAP_SUPER_REJECT 0x0004
114 #define L2CAP_SUPER_RCV_NOT_READY 0x0008
115 #define L2CAP_SUPER_SELECT_REJECT 0x000C
117 /* L2CAP Segmentation and Reassembly */
118 #define L2CAP_SDU_UNSEGMENTED 0x0000
119 #define L2CAP_SDU_START 0x4000
120 #define L2CAP_SDU_END 0x8000
121 #define L2CAP_SDU_CONTINUE 0xC000
123 /* L2CAP structures */
127 } __attribute__ ((packed));
128 #define L2CAP_HDR_SIZE 4
130 struct l2cap_cmd_hdr {
134 } __attribute__ ((packed));
135 #define L2CAP_CMD_HDR_SIZE 4
137 struct l2cap_cmd_rej {
139 } __attribute__ ((packed));
141 struct l2cap_conn_req {
144 } __attribute__ ((packed));
146 struct l2cap_conn_rsp {
151 } __attribute__ ((packed));
153 /* channel indentifier */
154 #define L2CAP_CID_SIGNALING 0x0001
155 #define L2CAP_CID_CONN_LESS 0x0002
156 #define L2CAP_CID_DYN_START 0x0040
157 #define L2CAP_CID_DYN_END 0xffff
160 #define L2CAP_CR_SUCCESS 0x0000
161 #define L2CAP_CR_PEND 0x0001
162 #define L2CAP_CR_BAD_PSM 0x0002
163 #define L2CAP_CR_SEC_BLOCK 0x0003
164 #define L2CAP_CR_NO_MEM 0x0004
167 #define L2CAP_CS_NO_INFO 0x0000
168 #define L2CAP_CS_AUTHEN_PEND 0x0001
169 #define L2CAP_CS_AUTHOR_PEND 0x0002
171 struct l2cap_conf_req {
175 } __attribute__ ((packed));
177 struct l2cap_conf_rsp {
182 } __attribute__ ((packed));
184 #define L2CAP_CONF_SUCCESS 0x0000
185 #define L2CAP_CONF_UNACCEPT 0x0001
186 #define L2CAP_CONF_REJECT 0x0002
187 #define L2CAP_CONF_UNKNOWN 0x0003
189 struct l2cap_conf_opt {
193 } __attribute__ ((packed));
194 #define L2CAP_CONF_OPT_SIZE 2
196 #define L2CAP_CONF_HINT 0x80
197 #define L2CAP_CONF_MASK 0x7f
199 #define L2CAP_CONF_MTU 0x01
200 #define L2CAP_CONF_FLUSH_TO 0x02
201 #define L2CAP_CONF_QOS 0x03
202 #define L2CAP_CONF_RFC 0x04
203 #define L2CAP_CONF_FCS 0x05
205 #define L2CAP_CONF_MAX_SIZE 22
207 struct l2cap_conf_rfc {
211 __le16 retrans_timeout;
212 __le16 monitor_timeout;
214 } __attribute__ ((packed));
216 #define L2CAP_MODE_BASIC 0x00
217 #define L2CAP_MODE_RETRANS 0x01
218 #define L2CAP_MODE_FLOWCTL 0x02
219 #define L2CAP_MODE_ERTM 0x03
220 #define L2CAP_MODE_STREAMING 0x04
222 struct l2cap_disconn_req {
225 } __attribute__ ((packed));
227 struct l2cap_disconn_rsp {
230 } __attribute__ ((packed));
232 struct l2cap_info_req {
234 } __attribute__ ((packed));
236 struct l2cap_info_rsp {
240 } __attribute__ ((packed));
243 #define L2CAP_IT_CL_MTU 0x0001
244 #define L2CAP_IT_FEAT_MASK 0x0002
245 #define L2CAP_IT_FIXED_CHAN 0x0003
248 #define L2CAP_IR_SUCCESS 0x0000
249 #define L2CAP_IR_NOTSUPP 0x0001
251 /* ----- L2CAP connections ----- */
252 struct l2cap_chan_list {
259 struct hci_conn *hcon;
271 struct timer_list info_timer;
275 struct sk_buff *rx_skb;
282 struct l2cap_chan_list chan_list;
285 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
286 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
287 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
289 /* ----- L2CAP channel and socket info ----- */
290 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
291 #define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue)
317 __u8 expected_ack_seq;
319 __u8 expected_tx_seq;
323 __u16 partial_sdu_len;
330 __u16 retrans_timeout;
331 __u16 monitor_timeout;
336 struct sk_buff_head tx_queue;
337 struct l2cap_conn *conn;
342 #define L2CAP_CONF_REQ_SENT 0x01
343 #define L2CAP_CONF_INPUT_DONE 0x02
344 #define L2CAP_CONF_OUTPUT_DONE 0x04
345 #define L2CAP_CONF_MTU_DONE 0x08
346 #define L2CAP_CONF_MODE_DONE 0x10
347 #define L2CAP_CONF_CONNECT_PEND 0x20
348 #define L2CAP_CONF_STATE2_DEVICE 0x80
350 #define L2CAP_CONF_MAX_CONF_REQ 2
351 #define L2CAP_CONF_MAX_CONF_RSP 2
353 #define L2CAP_CONN_SAR_SDU 0x01
355 static inline int l2cap_tx_window_full(struct sock *sk)
357 struct l2cap_pinfo *pi = l2cap_pi(sk);
360 sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64;
365 return (sub == pi->remote_tx_win);
368 #define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1
369 #define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8
370 #define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE)
371 #define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE
372 #define __is_sar_start(ctrl) ((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START
374 void l2cap_load(void);
376 #endif /* __L2CAP_H */