Andrei Emeltchenko | be21871 | 2010-12-01 16:58:26 +0200 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
Gustavo F. Padovan | ce5706b | 2010-07-13 11:57:11 -0300 | [diff] [blame] | 4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
Gustavo F. Padovan | 5d8868f | 2010-07-16 16:18:39 -0300 | [diff] [blame] | 5 | Copyright (C) 2010 Google Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Andrei Emeltchenko | be21871 | 2010-12-01 16:58:26 +0200 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | |
Andrei Emeltchenko | be21871 | 2010-12-01 16:58:26 +0200 | [diff] [blame] | 22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | SOFTWARE IS DISCLAIMED. |
| 25 | */ |
| 26 | |
| 27 | #ifndef __L2CAP_H |
| 28 | #define __L2CAP_H |
| 29 | |
| 30 | /* L2CAP defaults */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 31 | #define L2CAP_DEFAULT_MTU 672 |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 32 | #define L2CAP_DEFAULT_MIN_MTU 48 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 33 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 34 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
Gustavo F. Padovan | e90bac0 | 2009-08-20 22:26:00 -0300 | [diff] [blame] | 35 | #define L2CAP_DEFAULT_MAX_TX 3 |
Mat Martineau | fa23556 | 2010-08-05 15:54:20 -0700 | [diff] [blame] | 36 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
Gustavo F. Padovan | e90bac0 | 2009-08-20 22:26:00 -0300 | [diff] [blame] | 37 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
Mat Martineau | db12d64 | 2010-08-05 15:54:27 -0700 | [diff] [blame] | 38 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ |
Gustavo F. Padovan | c1b4f43 | 2010-05-01 16:15:39 -0300 | [diff] [blame] | 39 | #define L2CAP_DEFAULT_ACK_TO 200 |
Ville Tervo | b62f328 | 2011-02-10 22:38:50 -0300 | [diff] [blame] | 40 | #define L2CAP_LE_DEFAULT_MTU 23 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 42 | #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ |
| 43 | #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | /* L2CAP socket address */ |
| 46 | struct sockaddr_l2 { |
| 47 | sa_family_t l2_family; |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 48 | __le16 l2_psm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | bdaddr_t l2_bdaddr; |
Marcel Holtmann | f29972d | 2009-02-12 05:07:45 +0100 | [diff] [blame] | 50 | __le16 l2_cid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | }; |
| 52 | |
| 53 | /* L2CAP socket options */ |
| 54 | #define L2CAP_OPTIONS 0x01 |
| 55 | struct l2cap_options { |
| 56 | __u16 omtu; |
| 57 | __u16 imtu; |
| 58 | __u16 flush_to; |
| 59 | __u8 mode; |
Gustavo F. Padovan | fcc203c | 2009-08-20 22:26:02 -0300 | [diff] [blame] | 60 | __u8 fcs; |
Gustavo F. Padovan | 68d7f0c | 2010-05-01 16:15:41 -0300 | [diff] [blame] | 61 | __u8 max_tx; |
Gustavo F. Padovan | 14b5aa7 | 2010-05-01 16:15:40 -0300 | [diff] [blame] | 62 | __u16 txwin_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | }; |
| 64 | |
| 65 | #define L2CAP_CONNINFO 0x02 |
| 66 | struct l2cap_conninfo { |
| 67 | __u16 hci_handle; |
| 68 | __u8 dev_class[3]; |
| 69 | }; |
| 70 | |
| 71 | #define L2CAP_LM 0x03 |
| 72 | #define L2CAP_LM_MASTER 0x0001 |
| 73 | #define L2CAP_LM_AUTH 0x0002 |
| 74 | #define L2CAP_LM_ENCRYPT 0x0004 |
| 75 | #define L2CAP_LM_TRUSTED 0x0008 |
| 76 | #define L2CAP_LM_RELIABLE 0x0010 |
| 77 | #define L2CAP_LM_SECURE 0x0020 |
| 78 | |
| 79 | /* L2CAP command codes */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 80 | #define L2CAP_COMMAND_REJ 0x01 |
| 81 | #define L2CAP_CONN_REQ 0x02 |
| 82 | #define L2CAP_CONN_RSP 0x03 |
| 83 | #define L2CAP_CONF_REQ 0x04 |
| 84 | #define L2CAP_CONF_RSP 0x05 |
| 85 | #define L2CAP_DISCONN_REQ 0x06 |
| 86 | #define L2CAP_DISCONN_RSP 0x07 |
| 87 | #define L2CAP_ECHO_REQ 0x08 |
| 88 | #define L2CAP_ECHO_RSP 0x09 |
| 89 | #define L2CAP_INFO_REQ 0x0a |
| 90 | #define L2CAP_INFO_RSP 0x0b |
Claudio Takahasi | 3300d9a | 2011-02-11 19:28:54 -0200 | [diff] [blame] | 91 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
| 92 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 93 | |
Andrei Emeltchenko | a858393 | 2011-09-16 16:26:30 +0300 | [diff] [blame] | 94 | /* L2CAP extended feature mask */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 95 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
| 96 | #define L2CAP_FEAT_RETRANS 0x00000002 |
Andrei Emeltchenko | a858393 | 2011-09-16 16:26:30 +0300 | [diff] [blame] | 97 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 98 | #define L2CAP_FEAT_ERTM 0x00000008 |
| 99 | #define L2CAP_FEAT_STREAMING 0x00000010 |
| 100 | #define L2CAP_FEAT_FCS 0x00000020 |
Andrei Emeltchenko | a858393 | 2011-09-16 16:26:30 +0300 | [diff] [blame] | 101 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 102 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
Andrei Emeltchenko | a858393 | 2011-09-16 16:26:30 +0300 | [diff] [blame] | 103 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
| 104 | #define L2CAP_FEAT_UCD 0x00000200 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 105 | |
| 106 | /* L2CAP checksum option */ |
| 107 | #define L2CAP_FCS_NONE 0x00 |
| 108 | #define L2CAP_FCS_CRC16 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 110 | /* L2CAP Control Field bit masks */ |
| 111 | #define L2CAP_CTRL_SAR 0xC000 |
| 112 | #define L2CAP_CTRL_REQSEQ 0x3F00 |
| 113 | #define L2CAP_CTRL_TXSEQ 0x007E |
| 114 | #define L2CAP_CTRL_RETRANS 0x0080 |
| 115 | #define L2CAP_CTRL_FINAL 0x0080 |
| 116 | #define L2CAP_CTRL_POLL 0x0010 |
| 117 | #define L2CAP_CTRL_SUPERVISE 0x000C |
| 118 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ |
| 119 | |
| 120 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 |
| 121 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
Gustavo F. Padovan | 8f17154 | 2009-08-20 22:26:03 -0300 | [diff] [blame] | 122 | #define L2CAP_CTRL_SAR_SHIFT 14 |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 123 | |
| 124 | /* L2CAP Supervisory Function */ |
| 125 | #define L2CAP_SUPER_RCV_READY 0x0000 |
| 126 | #define L2CAP_SUPER_REJECT 0x0004 |
| 127 | #define L2CAP_SUPER_RCV_NOT_READY 0x0008 |
| 128 | #define L2CAP_SUPER_SELECT_REJECT 0x000C |
| 129 | |
| 130 | /* L2CAP Segmentation and Reassembly */ |
| 131 | #define L2CAP_SDU_UNSEGMENTED 0x0000 |
| 132 | #define L2CAP_SDU_START 0x4000 |
| 133 | #define L2CAP_SDU_END 0x8000 |
| 134 | #define L2CAP_SDU_CONTINUE 0xC000 |
| 135 | |
Ilia Kolomisnky | e2fd318 | 2011-07-10 08:47:44 +0300 | [diff] [blame] | 136 | /* L2CAP Command rej. reasons */ |
| 137 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
| 138 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 |
| 139 | #define L2CAP_REJ_INVALID_CID 0x0002 |
| 140 | |
| 141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | /* L2CAP structures */ |
| 143 | struct l2cap_hdr { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 144 | __le16 len; |
| 145 | __le16 cid; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 146 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #define L2CAP_HDR_SIZE 4 |
| 148 | |
| 149 | struct l2cap_cmd_hdr { |
| 150 | __u8 code; |
| 151 | __u8 ident; |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 152 | __le16 len; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 153 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | #define L2CAP_CMD_HDR_SIZE 4 |
| 155 | |
Ilia Kolomisnky | e2fd318 | 2011-07-10 08:47:44 +0300 | [diff] [blame] | 156 | struct l2cap_cmd_rej_unk { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 157 | __le16 reason; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 158 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
Ilia Kolomisnky | e2fd318 | 2011-07-10 08:47:44 +0300 | [diff] [blame] | 160 | struct l2cap_cmd_rej_mtu { |
| 161 | __le16 reason; |
| 162 | __le16 max_mtu; |
| 163 | } __packed; |
| 164 | |
| 165 | struct l2cap_cmd_rej_cid { |
| 166 | __le16 reason; |
| 167 | __le16 scid; |
| 168 | __le16 dcid; |
| 169 | } __packed; |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | struct l2cap_conn_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 172 | __le16 psm; |
| 173 | __le16 scid; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 174 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
| 176 | struct l2cap_conn_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 177 | __le16 dcid; |
| 178 | __le16 scid; |
| 179 | __le16 result; |
| 180 | __le16 status; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 181 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Gustavo F. Padovan | 8db4dc4 | 2009-04-20 01:31:05 -0300 | [diff] [blame] | 183 | /* channel indentifier */ |
| 184 | #define L2CAP_CID_SIGNALING 0x0001 |
| 185 | #define L2CAP_CID_CONN_LESS 0x0002 |
Ville Tervo | acd7d37 | 2011-02-10 22:38:49 -0300 | [diff] [blame] | 186 | #define L2CAP_CID_LE_DATA 0x0004 |
| 187 | #define L2CAP_CID_LE_SIGNALING 0x0005 |
| 188 | #define L2CAP_CID_SMP 0x0006 |
Gustavo F. Padovan | 8db4dc4 | 2009-04-20 01:31:05 -0300 | [diff] [blame] | 189 | #define L2CAP_CID_DYN_START 0x0040 |
| 190 | #define L2CAP_CID_DYN_END 0xffff |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* connect result */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 193 | #define L2CAP_CR_SUCCESS 0x0000 |
| 194 | #define L2CAP_CR_PEND 0x0001 |
| 195 | #define L2CAP_CR_BAD_PSM 0x0002 |
| 196 | #define L2CAP_CR_SEC_BLOCK 0x0003 |
| 197 | #define L2CAP_CR_NO_MEM 0x0004 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | /* connect status */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 200 | #define L2CAP_CS_NO_INFO 0x0000 |
| 201 | #define L2CAP_CS_AUTHEN_PEND 0x0001 |
| 202 | #define L2CAP_CS_AUTHOR_PEND 0x0002 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
| 204 | struct l2cap_conf_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 205 | __le16 dcid; |
| 206 | __le16 flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | __u8 data[0]; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 208 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | struct l2cap_conf_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 211 | __le16 scid; |
| 212 | __le16 flags; |
| 213 | __le16 result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | __u8 data[0]; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 215 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Marcel Holtmann | 5dee9e7 | 2007-05-24 14:27:19 +0200 | [diff] [blame] | 217 | #define L2CAP_CONF_SUCCESS 0x0000 |
| 218 | #define L2CAP_CONF_UNACCEPT 0x0001 |
| 219 | #define L2CAP_CONF_REJECT 0x0002 |
| 220 | #define L2CAP_CONF_UNKNOWN 0x0003 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | struct l2cap_conf_opt { |
| 223 | __u8 type; |
| 224 | __u8 len; |
| 225 | __u8 val[0]; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 226 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | #define L2CAP_CONF_OPT_SIZE 2 |
| 228 | |
Gustavo F. Padovan | 589d274 | 2009-04-20 01:31:07 -0300 | [diff] [blame] | 229 | #define L2CAP_CONF_HINT 0x80 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 230 | #define L2CAP_CONF_MASK 0x7f |
Gustavo F. Padovan | 589d274 | 2009-04-20 01:31:07 -0300 | [diff] [blame] | 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | #define L2CAP_CONF_MTU 0x01 |
| 233 | #define L2CAP_CONF_FLUSH_TO 0x02 |
| 234 | #define L2CAP_CONF_QOS 0x03 |
| 235 | #define L2CAP_CONF_RFC 0x04 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 236 | #define L2CAP_CONF_FCS 0x05 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | #define L2CAP_CONF_MAX_SIZE 22 |
| 239 | |
Marcel Holtmann | 6464f35 | 2007-10-20 13:39:51 +0200 | [diff] [blame] | 240 | struct l2cap_conf_rfc { |
| 241 | __u8 mode; |
| 242 | __u8 txwin_size; |
| 243 | __u8 max_transmit; |
| 244 | __le16 retrans_timeout; |
| 245 | __le16 monitor_timeout; |
| 246 | __le16 max_pdu_size; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 247 | } __packed; |
Marcel Holtmann | 6464f35 | 2007-10-20 13:39:51 +0200 | [diff] [blame] | 248 | |
| 249 | #define L2CAP_MODE_BASIC 0x00 |
| 250 | #define L2CAP_MODE_RETRANS 0x01 |
| 251 | #define L2CAP_MODE_FLOWCTL 0x02 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 252 | #define L2CAP_MODE_ERTM 0x03 |
Marcel Holtmann | c6b03cf | 2009-05-02 22:31:10 -0700 | [diff] [blame] | 253 | #define L2CAP_MODE_STREAMING 0x04 |
Marcel Holtmann | 6464f35 | 2007-10-20 13:39:51 +0200 | [diff] [blame] | 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | struct l2cap_disconn_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 256 | __le16 dcid; |
| 257 | __le16 scid; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 258 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | struct l2cap_disconn_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 261 | __le16 dcid; |
| 262 | __le16 scid; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 263 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | struct l2cap_info_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 266 | __le16 type; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 267 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | struct l2cap_info_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 270 | __le16 type; |
| 271 | __le16 result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | __u8 data[0]; |
Gustavo F. Padovan | 66c853c | 2010-07-19 02:00:13 -0300 | [diff] [blame] | 273 | } __packed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | /* info type */ |
| 276 | #define L2CAP_IT_CL_MTU 0x0001 |
| 277 | #define L2CAP_IT_FEAT_MASK 0x0002 |
Marcel Holtmann | e1027a7 | 2009-02-09 09:18:02 +0100 | [diff] [blame] | 278 | #define L2CAP_IT_FIXED_CHAN 0x0003 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
| 280 | /* info result */ |
| 281 | #define L2CAP_IR_SUCCESS 0x0000 |
| 282 | #define L2CAP_IR_NOTSUPP 0x0001 |
| 283 | |
Claudio Takahasi | de73115 | 2011-02-11 19:28:55 -0200 | [diff] [blame] | 284 | struct l2cap_conn_param_update_req { |
| 285 | __le16 min; |
| 286 | __le16 max; |
| 287 | __le16 latency; |
| 288 | __le16 to_multiplier; |
| 289 | } __packed; |
| 290 | |
| 291 | struct l2cap_conn_param_update_rsp { |
| 292 | __le16 result; |
| 293 | } __packed; |
| 294 | |
| 295 | /* Connection Parameters result */ |
| 296 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 |
| 297 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 |
| 298 | |
Gustavo F. Padovan | 4845407 | 2011-03-25 00:22:30 -0300 | [diff] [blame] | 299 | /* ----- L2CAP channels and connections ----- */ |
Gustavo F. Padovan | 39d5a3e | 2011-04-04 15:40:12 -0300 | [diff] [blame] | 300 | struct srej_list { |
| 301 | __u8 tx_seq; |
| 302 | struct list_head list; |
| 303 | }; |
| 304 | |
Gustavo F. Padovan | 4845407 | 2011-03-25 00:22:30 -0300 | [diff] [blame] | 305 | struct l2cap_chan { |
| 306 | struct sock *sk; |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 307 | |
| 308 | struct l2cap_conn *conn; |
| 309 | |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 310 | __u8 state; |
| 311 | |
Gustavo F. Padovan | 71ba0e5 | 2011-05-17 14:34:52 -0300 | [diff] [blame] | 312 | atomic_t refcnt; |
| 313 | |
Gustavo F. Padovan | fe4128e | 2011-04-13 19:50:45 -0300 | [diff] [blame] | 314 | __le16 psm; |
| 315 | __u16 dcid; |
| 316 | __u16 scid; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 317 | |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 318 | __u16 imtu; |
| 319 | __u16 omtu; |
| 320 | __u16 flush_to; |
| 321 | __u8 mode; |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 322 | __u8 chan_type; |
Gustavo F. Padovan | 0c1bc5c | 2011-04-13 17:20:49 -0300 | [diff] [blame] | 323 | |
| 324 | __le16 sport; |
| 325 | |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 326 | __u8 sec_level; |
| 327 | __u8 role_switch; |
| 328 | __u8 force_reliable; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 329 | __u8 force_active; |
Gustavo F. Padovan | 4343478 | 2011-04-12 18:31:57 -0300 | [diff] [blame] | 330 | |
Gustavo F. Padovan | fc7f8a7 | 2011-03-25 13:59:37 -0300 | [diff] [blame] | 331 | __u8 ident; |
| 332 | |
Gustavo F. Padovan | 73ffa90 | 2011-03-25 14:16:54 -0300 | [diff] [blame] | 333 | __u8 conf_req[64]; |
| 334 | __u8 conf_len; |
| 335 | __u8 num_conf_req; |
| 336 | __u8 num_conf_rsp; |
| 337 | |
Gustavo F. Padovan | 47d1ec6 | 2011-04-13 15:57:03 -0300 | [diff] [blame] | 338 | __u8 fcs; |
| 339 | |
| 340 | __u8 tx_win; |
| 341 | __u8 max_tx; |
| 342 | __u16 retrans_timeout; |
| 343 | __u16 monitor_timeout; |
| 344 | __u16 mps; |
| 345 | |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 346 | unsigned long conf_state; |
Gustavo F. Padovan | e2ab435 | 2011-06-10 21:28:49 -0300 | [diff] [blame] | 347 | unsigned long conn_state; |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame^] | 348 | unsigned long flags; |
Gustavo F. Padovan | 525cd18 | 2011-03-25 19:43:39 -0300 | [diff] [blame] | 349 | |
Gustavo F. Padovan | 42e5c80 | 2011-03-25 19:58:34 -0300 | [diff] [blame] | 350 | __u8 next_tx_seq; |
| 351 | __u8 expected_ack_seq; |
| 352 | __u8 expected_tx_seq; |
| 353 | __u8 buffer_seq; |
| 354 | __u8 buffer_seq_srej; |
Gustavo F. Padovan | 6a02661 | 2011-04-01 00:38:50 -0300 | [diff] [blame] | 355 | __u8 srej_save_reqseq; |
| 356 | __u8 frames_sent; |
| 357 | __u8 unacked_frames; |
| 358 | __u8 retry_count; |
| 359 | __u8 num_acked; |
Gustavo F. Padovan | 6f61fd4 | 2011-03-25 20:09:37 -0300 | [diff] [blame] | 360 | __u16 sdu_len; |
Gustavo F. Padovan | 6f61fd4 | 2011-03-25 20:09:37 -0300 | [diff] [blame] | 361 | struct sk_buff *sdu; |
Mat Martineau | 84084a3 | 2011-07-22 14:54:00 -0700 | [diff] [blame] | 362 | struct sk_buff *sdu_last_frag; |
Gustavo F. Padovan | 6f61fd4 | 2011-03-25 20:09:37 -0300 | [diff] [blame] | 363 | |
Gustavo F. Padovan | 2c03a7a | 2011-03-25 20:15:28 -0300 | [diff] [blame] | 364 | __u8 remote_tx_win; |
| 365 | __u8 remote_max_tx; |
| 366 | __u16 remote_mps; |
Gustavo F. Padovan | 42e5c80 | 2011-03-25 19:58:34 -0300 | [diff] [blame] | 367 | |
Gustavo F. Padovan | ab07801 | 2011-05-02 18:25:01 -0300 | [diff] [blame] | 368 | struct timer_list chan_timer; |
Gustavo F. Padovan | e92c8e7 | 2011-04-01 00:53:45 -0300 | [diff] [blame] | 369 | struct timer_list retrans_timer; |
| 370 | struct timer_list monitor_timer; |
| 371 | struct timer_list ack_timer; |
Gustavo F. Padovan | 58d35f8 | 2011-04-04 16:16:44 -0300 | [diff] [blame] | 372 | struct sk_buff *tx_send_head; |
| 373 | struct sk_buff_head tx_q; |
Gustavo F. Padovan | f1c6775 | 2011-03-25 20:36:10 -0300 | [diff] [blame] | 374 | struct sk_buff_head srej_q; |
Gustavo F. Padovan | 39d5a3e | 2011-04-04 15:40:12 -0300 | [diff] [blame] | 375 | struct list_head srej_l; |
Gustavo F. Padovan | e92c8e7 | 2011-04-01 00:53:45 -0300 | [diff] [blame] | 376 | |
Gustavo F. Padovan | baa7e1f | 2011-03-31 16:17:41 -0300 | [diff] [blame] | 377 | struct list_head list; |
Gustavo F. Padovan | 23691d7 | 2011-04-27 18:26:32 -0300 | [diff] [blame] | 378 | struct list_head global_l; |
Gustavo F. Padovan | 80808e4 | 2011-05-16 17:24:37 -0300 | [diff] [blame] | 379 | |
| 380 | void *data; |
| 381 | struct l2cap_ops *ops; |
| 382 | }; |
| 383 | |
| 384 | struct l2cap_ops { |
| 385 | char *name; |
| 386 | |
| 387 | struct l2cap_chan *(*new_connection) (void *data); |
Gustavo F. Padovan | 2307049 | 2011-05-16 17:57:22 -0300 | [diff] [blame] | 388 | int (*recv) (void *data, struct sk_buff *skb); |
Gustavo F. Padovan | ba3bd0e | 2011-05-16 18:23:24 -0300 | [diff] [blame] | 389 | void (*close) (void *data); |
Gustavo F. Padovan | 89bc500 | 2011-06-03 00:19:47 -0300 | [diff] [blame] | 390 | void (*state_change) (void *data, int state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | }; |
| 392 | |
| 393 | struct l2cap_conn { |
| 394 | struct hci_conn *hcon; |
| 395 | |
| 396 | bdaddr_t *dst; |
| 397 | bdaddr_t *src; |
| 398 | |
| 399 | unsigned int mtu; |
| 400 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 401 | __u32 feat_mask; |
| 402 | |
| 403 | __u8 info_state; |
| 404 | __u8 info_ident; |
| 405 | |
| 406 | struct timer_list info_timer; |
| 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | spinlock_t lock; |
| 409 | |
| 410 | struct sk_buff *rx_skb; |
| 411 | __u32 rx_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | __u8 tx_ident; |
| 413 | |
Marcel Holtmann | 2950f21 | 2009-02-12 14:02:50 +0100 | [diff] [blame] | 414 | __u8 disc_reason; |
| 415 | |
Vinicius Costa Gomes | 5d3de7d | 2011-06-14 13:37:41 -0300 | [diff] [blame] | 416 | struct timer_list security_timer; |
Vinicius Costa Gomes | 1c1def0 | 2011-09-05 14:31:30 -0300 | [diff] [blame] | 417 | struct smp_chan *smp_chan; |
Vinicius Costa Gomes | 5d3de7d | 2011-06-14 13:37:41 -0300 | [diff] [blame] | 418 | |
Gustavo F. Padovan | baa7e1f | 2011-03-31 16:17:41 -0300 | [diff] [blame] | 419 | struct list_head chan_l; |
| 420 | rwlock_t chan_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | }; |
| 422 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 423 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
Marcel Holtmann | 984947d | 2009-02-06 23:35:19 +0100 | [diff] [blame] | 424 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
| 425 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 426 | |
Gustavo F. Padovan | 715ec00 | 2011-05-02 17:13:55 -0300 | [diff] [blame] | 427 | #define L2CAP_CHAN_RAW 1 |
| 428 | #define L2CAP_CHAN_CONN_LESS 2 |
| 429 | #define L2CAP_CHAN_CONN_ORIENTED 3 |
| 430 | |
Gustavo F. Padovan | 4845407 | 2011-03-25 00:22:30 -0300 | [diff] [blame] | 431 | /* ----- L2CAP socket info ----- */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
| 433 | |
| 434 | struct l2cap_pinfo { |
| 435 | struct bt_sock bt; |
Gustavo F. Padovan | 4845407 | 2011-03-25 00:22:30 -0300 | [diff] [blame] | 436 | struct l2cap_chan *chan; |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 437 | struct sk_buff *rx_busy_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | }; |
| 439 | |
Gustavo F. Padovan | c1360a1 | 2011-06-10 17:02:12 -0300 | [diff] [blame] | 440 | enum { |
| 441 | CONF_REQ_SENT, |
| 442 | CONF_INPUT_DONE, |
| 443 | CONF_OUTPUT_DONE, |
| 444 | CONF_MTU_DONE, |
| 445 | CONF_MODE_DONE, |
| 446 | CONF_CONNECT_PEND, |
| 447 | CONF_NO_FCS_RECV, |
| 448 | CONF_STATE2_DEVICE, |
| 449 | }; |
Marcel Holtmann | 861d688 | 2007-10-20 13:37:06 +0200 | [diff] [blame] | 450 | |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 451 | #define L2CAP_CONF_MAX_CONF_REQ 2 |
| 452 | #define L2CAP_CONF_MAX_CONF_RSP 2 |
| 453 | |
Gustavo F. Padovan | e2ab435 | 2011-06-10 21:28:49 -0300 | [diff] [blame] | 454 | enum { |
Gustavo F. Padovan | e2ab435 | 2011-06-10 21:28:49 -0300 | [diff] [blame] | 455 | CONN_SREJ_SENT, |
| 456 | CONN_WAIT_F, |
| 457 | CONN_SREJ_ACT, |
| 458 | CONN_SEND_PBIT, |
| 459 | CONN_REMOTE_BUSY, |
| 460 | CONN_LOCAL_BUSY, |
| 461 | CONN_REJ_ACT, |
| 462 | CONN_SEND_FBIT, |
| 463 | CONN_RNR_SENT, |
Gustavo F. Padovan | e2ab435 | 2011-06-10 21:28:49 -0300 | [diff] [blame] | 464 | }; |
Gustavo F. Padovan | e90bac0 | 2009-08-20 22:26:00 -0300 | [diff] [blame] | 465 | |
Andrei Emeltchenko | d57b0e8 | 2011-10-11 14:04:31 +0300 | [diff] [blame^] | 466 | /* Definitions for flags in l2cap_chan */ |
| 467 | enum { |
| 468 | FLAG_FLUSHABLE, |
| 469 | }; |
| 470 | |
Gustavo F. Padovan | c9b6667 | 2011-05-17 14:59:01 -0300 | [diff] [blame] | 471 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
| 472 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) |
Gustavo F. Padovan | 1a09bcb | 2011-05-17 15:13:19 -0300 | [diff] [blame] | 473 | #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
| 474 | L2CAP_DEFAULT_RETRANS_TO); |
| 475 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) |
| 476 | #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ |
| 477 | L2CAP_DEFAULT_MONITOR_TO); |
| 478 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) |
| 479 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ |
| 480 | L2CAP_DEFAULT_ACK_TO); |
| 481 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) |
Gustavo F. Padovan | c74e560 | 2009-08-20 22:25:58 -0300 | [diff] [blame] | 482 | |
Gustavo F. Padovan | 42e5c80 | 2011-03-25 19:58:34 -0300 | [diff] [blame] | 483 | static inline int l2cap_tx_window_full(struct l2cap_chan *ch) |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 484 | { |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 485 | int sub; |
| 486 | |
Gustavo F. Padovan | 42e5c80 | 2011-03-25 19:58:34 -0300 | [diff] [blame] | 487 | sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 488 | |
| 489 | if (sub < 0) |
| 490 | sub += 64; |
| 491 | |
Gustavo F. Padovan | 2c03a7a | 2011-03-25 20:15:28 -0300 | [diff] [blame] | 492 | return sub == ch->remote_tx_win; |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame] | 493 | } |
| 494 | |
Andrei Emeltchenko | 894718a | 2010-12-01 16:58:24 +0200 | [diff] [blame] | 495 | #define __get_txseq(ctrl) (((ctrl) & L2CAP_CTRL_TXSEQ) >> 1) |
| 496 | #define __get_reqseq(ctrl) (((ctrl) & L2CAP_CTRL_REQSEQ) >> 8) |
| 497 | #define __is_iframe(ctrl) (!((ctrl) & L2CAP_CTRL_FRAME_TYPE)) |
| 498 | #define __is_sframe(ctrl) ((ctrl) & L2CAP_CTRL_FRAME_TYPE) |
| 499 | #define __is_sar_start(ctrl) (((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 501 | extern int disable_ertm; |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 502 | |
| 503 | int l2cap_init_sockets(void); |
| 504 | void l2cap_cleanup_sockets(void); |
| 505 | |
Gustavo F. Padovan | 8c1d787 | 2011-04-13 20:23:55 -0300 | [diff] [blame] | 506 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
Gustavo F. Padovan | dcba0db | 2011-02-04 03:08:36 -0200 | [diff] [blame] | 507 | int __l2cap_wait_ack(struct sock *sk); |
Gustavo F. Padovan | 6898325 | 2011-02-04 03:02:31 -0200 | [diff] [blame] | 508 | |
Gustavo F. Padovan | 9e4425f | 2011-04-18 18:38:43 -0300 | [diff] [blame] | 509 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
| 510 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); |
| 511 | |
Gustavo F. Padovan | 23691d7 | 2011-04-27 18:26:32 -0300 | [diff] [blame] | 512 | struct l2cap_chan *l2cap_chan_create(struct sock *sk); |
Gustavo F. Padovan | 0f85272 | 2011-05-04 19:42:50 -0300 | [diff] [blame] | 513 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
Gustavo F. Padovan | 23691d7 | 2011-04-27 18:26:32 -0300 | [diff] [blame] | 514 | void l2cap_chan_destroy(struct l2cap_chan *chan); |
Gustavo F. Padovan | 77a74c7 | 2011-04-12 18:17:14 -0300 | [diff] [blame] | 515 | int l2cap_chan_connect(struct l2cap_chan *chan); |
Gustavo F. Padovan | 9a91a04 | 2011-04-28 18:50:17 -0300 | [diff] [blame] | 516 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); |
Mat Martineau | e328140 | 2011-07-07 09:39:02 -0700 | [diff] [blame] | 517 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
Gustavo F. Padovan | bb58f74 | 2011-02-03 20:50:35 -0200 | [diff] [blame] | 518 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | #endif /* __L2CAP_H */ |