Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 29 | #define L2CAP_DEFAULT_MTU 672 |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 30 | #define L2CAP_DEFAULT_MIN_MTU 48 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 31 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 32 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
| 33 | #define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5) |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 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_RX_APDU 0xfff7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 39 | #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ |
| 40 | #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | /* L2CAP socket address */ |
| 43 | struct sockaddr_l2 { |
| 44 | sa_family_t l2_family; |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 45 | __le16 l2_psm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | bdaddr_t l2_bdaddr; |
Marcel Holtmann | f29972d | 2009-02-12 05:07:45 +0100 | [diff] [blame] | 47 | __le16 l2_cid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | }; |
| 49 | |
| 50 | /* L2CAP socket options */ |
| 51 | #define L2CAP_OPTIONS 0x01 |
| 52 | struct l2cap_options { |
| 53 | __u16 omtu; |
| 54 | __u16 imtu; |
| 55 | __u16 flush_to; |
| 56 | __u8 mode; |
| 57 | }; |
| 58 | |
| 59 | #define L2CAP_CONNINFO 0x02 |
| 60 | struct l2cap_conninfo { |
| 61 | __u16 hci_handle; |
| 62 | __u8 dev_class[3]; |
| 63 | }; |
| 64 | |
| 65 | #define L2CAP_LM 0x03 |
| 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 |
| 72 | |
| 73 | /* L2CAP command codes */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 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 |
| 85 | |
| 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 |
| 93 | |
| 94 | /* L2CAP checksum option */ |
| 95 | #define L2CAP_FCS_NONE 0x00 |
| 96 | #define L2CAP_FCS_CRC16 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 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 */ |
| 107 | |
| 108 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 |
| 109 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
| 110 | |
| 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 |
| 116 | |
| 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 |
| 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | /* L2CAP structures */ |
| 124 | struct l2cap_hdr { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 125 | __le16 len; |
| 126 | __le16 cid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } __attribute__ ((packed)); |
| 128 | #define L2CAP_HDR_SIZE 4 |
| 129 | |
| 130 | struct l2cap_cmd_hdr { |
| 131 | __u8 code; |
| 132 | __u8 ident; |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 133 | __le16 len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } __attribute__ ((packed)); |
| 135 | #define L2CAP_CMD_HDR_SIZE 4 |
| 136 | |
| 137 | struct l2cap_cmd_rej { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 138 | __le16 reason; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | } __attribute__ ((packed)); |
| 140 | |
| 141 | struct l2cap_conn_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 142 | __le16 psm; |
| 143 | __le16 scid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } __attribute__ ((packed)); |
| 145 | |
| 146 | struct l2cap_conn_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 147 | __le16 dcid; |
| 148 | __le16 scid; |
| 149 | __le16 result; |
| 150 | __le16 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } __attribute__ ((packed)); |
| 152 | |
Gustavo F. Padovan | 8db4dc4 | 2009-04-20 01:31:05 -0300 | [diff] [blame] | 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 |
| 158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | /* connect result */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | /* connect status */ |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 167 | #define L2CAP_CS_NO_INFO 0x0000 |
| 168 | #define L2CAP_CS_AUTHEN_PEND 0x0001 |
| 169 | #define L2CAP_CS_AUTHOR_PEND 0x0002 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | |
| 171 | struct l2cap_conf_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 172 | __le16 dcid; |
| 173 | __le16 flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | __u8 data[0]; |
| 175 | } __attribute__ ((packed)); |
| 176 | |
| 177 | struct l2cap_conf_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 178 | __le16 scid; |
| 179 | __le16 flags; |
| 180 | __le16 result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | __u8 data[0]; |
| 182 | } __attribute__ ((packed)); |
| 183 | |
Marcel Holtmann | 5dee9e7 | 2007-05-24 14:27:19 +0200 | [diff] [blame] | 184 | #define L2CAP_CONF_SUCCESS 0x0000 |
| 185 | #define L2CAP_CONF_UNACCEPT 0x0001 |
| 186 | #define L2CAP_CONF_REJECT 0x0002 |
| 187 | #define L2CAP_CONF_UNKNOWN 0x0003 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
| 189 | struct l2cap_conf_opt { |
| 190 | __u8 type; |
| 191 | __u8 len; |
| 192 | __u8 val[0]; |
| 193 | } __attribute__ ((packed)); |
| 194 | #define L2CAP_CONF_OPT_SIZE 2 |
| 195 | |
Gustavo F. Padovan | 589d274 | 2009-04-20 01:31:07 -0300 | [diff] [blame] | 196 | #define L2CAP_CONF_HINT 0x80 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 197 | #define L2CAP_CONF_MASK 0x7f |
Gustavo F. Padovan | 589d274 | 2009-04-20 01:31:07 -0300 | [diff] [blame] | 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 203 | #define L2CAP_CONF_FCS 0x05 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | #define L2CAP_CONF_MAX_SIZE 22 |
| 206 | |
Marcel Holtmann | 6464f35 | 2007-10-20 13:39:51 +0200 | [diff] [blame] | 207 | struct l2cap_conf_rfc { |
| 208 | __u8 mode; |
| 209 | __u8 txwin_size; |
| 210 | __u8 max_transmit; |
| 211 | __le16 retrans_timeout; |
| 212 | __le16 monitor_timeout; |
| 213 | __le16 max_pdu_size; |
| 214 | } __attribute__ ((packed)); |
| 215 | |
| 216 | #define L2CAP_MODE_BASIC 0x00 |
| 217 | #define L2CAP_MODE_RETRANS 0x01 |
| 218 | #define L2CAP_MODE_FLOWCTL 0x02 |
Marcel Holtmann | 47ec1dcd | 2009-05-02 18:57:55 -0700 | [diff] [blame] | 219 | #define L2CAP_MODE_ERTM 0x03 |
Marcel Holtmann | c6b03cf | 2009-05-02 22:31:10 -0700 | [diff] [blame] | 220 | #define L2CAP_MODE_STREAMING 0x04 |
Marcel Holtmann | 6464f35 | 2007-10-20 13:39:51 +0200 | [diff] [blame] | 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | struct l2cap_disconn_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 223 | __le16 dcid; |
| 224 | __le16 scid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } __attribute__ ((packed)); |
| 226 | |
| 227 | struct l2cap_disconn_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 228 | __le16 dcid; |
| 229 | __le16 scid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } __attribute__ ((packed)); |
| 231 | |
| 232 | struct l2cap_info_req { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 233 | __le16 type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } __attribute__ ((packed)); |
| 235 | |
| 236 | struct l2cap_info_rsp { |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 237 | __le16 type; |
| 238 | __le16 result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | __u8 data[0]; |
| 240 | } __attribute__ ((packed)); |
| 241 | |
| 242 | /* info type */ |
| 243 | #define L2CAP_IT_CL_MTU 0x0001 |
| 244 | #define L2CAP_IT_FEAT_MASK 0x0002 |
Marcel Holtmann | e1027a7 | 2009-02-09 09:18:02 +0100 | [diff] [blame] | 245 | #define L2CAP_IT_FIXED_CHAN 0x0003 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
| 247 | /* info result */ |
| 248 | #define L2CAP_IR_SUCCESS 0x0000 |
| 249 | #define L2CAP_IR_NOTSUPP 0x0001 |
| 250 | |
| 251 | /* ----- L2CAP connections ----- */ |
| 252 | struct l2cap_chan_list { |
| 253 | struct sock *head; |
| 254 | rwlock_t lock; |
| 255 | long num; |
| 256 | }; |
| 257 | |
| 258 | struct l2cap_conn { |
| 259 | struct hci_conn *hcon; |
| 260 | |
| 261 | bdaddr_t *dst; |
| 262 | bdaddr_t *src; |
| 263 | |
| 264 | unsigned int mtu; |
| 265 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 266 | __u32 feat_mask; |
| 267 | |
| 268 | __u8 info_state; |
| 269 | __u8 info_ident; |
| 270 | |
| 271 | struct timer_list info_timer; |
| 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | spinlock_t lock; |
| 274 | |
| 275 | struct sk_buff *rx_skb; |
| 276 | __u32 rx_len; |
| 277 | __u8 rx_ident; |
| 278 | __u8 tx_ident; |
| 279 | |
Marcel Holtmann | 2950f21 | 2009-02-12 14:02:50 +0100 | [diff] [blame] | 280 | __u8 disc_reason; |
| 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | struct l2cap_chan_list chan_list; |
| 283 | }; |
| 284 | |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 285 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
Marcel Holtmann | 984947d | 2009-02-06 23:35:19 +0100 | [diff] [blame] | 286 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
| 287 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 |
Marcel Holtmann | 4e8402a | 2007-10-20 13:37:56 +0200 | [diff] [blame] | 288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | /* ----- L2CAP channel and socket info ----- */ |
| 290 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 291 | #define TX_QUEUE(sk) (&l2cap_pi(sk)->tx_queue) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | struct l2cap_pinfo { |
| 294 | struct bt_sock bt; |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 295 | __le16 psm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | __u16 dcid; |
| 297 | __u16 scid; |
| 298 | |
| 299 | __u16 imtu; |
| 300 | __u16 omtu; |
| 301 | __u16 flush_to; |
Marcel Holtmann | c6b03cf | 2009-05-02 22:31:10 -0700 | [diff] [blame] | 302 | __u8 mode; |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 303 | __u8 num_conf_req; |
| 304 | __u8 num_conf_rsp; |
| 305 | |
Marcel Holtmann | c6b03cf | 2009-05-02 22:31:10 -0700 | [diff] [blame] | 306 | __u8 fcs; |
| 307 | __u8 sec_level; |
Marcel Holtmann | 2af6b9d | 2009-01-15 21:58:38 +0100 | [diff] [blame] | 308 | __u8 role_switch; |
Marcel Holtmann | c6b03cf | 2009-05-02 22:31:10 -0700 | [diff] [blame] | 309 | __u8 force_reliable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Marcel Holtmann | 5dee9e7 | 2007-05-24 14:27:19 +0200 | [diff] [blame] | 311 | __u8 conf_req[64]; |
| 312 | __u8 conf_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | __u8 conf_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 315 | __u8 next_tx_seq; |
| 316 | __u8 expected_ack_seq; |
| 317 | __u8 req_seq; |
| 318 | __u8 expected_tx_seq; |
| 319 | __u8 unacked_frames; |
| 320 | __u8 num_to_ack; |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | __u8 ident; |
| 323 | |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 324 | __u8 remote_tx_win; |
| 325 | __u8 remote_max_tx; |
| 326 | __u16 retrans_timeout; |
| 327 | __u16 monitor_timeout; |
| 328 | __u16 max_pdu_size; |
| 329 | |
Al Viro | 8e036fc | 2007-07-29 00:16:36 -0700 | [diff] [blame] | 330 | __le16 sport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 332 | struct sk_buff_head tx_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | struct l2cap_conn *conn; |
| 334 | struct sock *next_c; |
| 335 | struct sock *prev_c; |
| 336 | }; |
| 337 | |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 338 | #define L2CAP_CONF_REQ_SENT 0x01 |
| 339 | #define L2CAP_CONF_INPUT_DONE 0x02 |
| 340 | #define L2CAP_CONF_OUTPUT_DONE 0x04 |
| 341 | #define L2CAP_CONF_MTU_DONE 0x08 |
| 342 | #define L2CAP_CONF_MODE_DONE 0x10 |
| 343 | #define L2CAP_CONF_CONNECT_PEND 0x20 |
| 344 | #define L2CAP_CONF_STATE2_DEVICE 0x80 |
Marcel Holtmann | 861d688 | 2007-10-20 13:37:06 +0200 | [diff] [blame] | 345 | |
Gustavo F. Padovan | f2fcfcd | 2009-07-04 15:06:24 -0300 | [diff] [blame] | 346 | #define L2CAP_CONF_MAX_CONF_REQ 2 |
| 347 | #define L2CAP_CONF_MAX_CONF_RSP 2 |
| 348 | |
Gustavo F. Padovan | 1c2acff | 2009-08-20 22:25:57 -0300 | [diff] [blame^] | 349 | static inline int l2cap_tx_window_full(struct sock *sk) |
| 350 | { |
| 351 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
| 352 | int sub; |
| 353 | |
| 354 | sub = (pi->next_tx_seq - pi->expected_ack_seq) % 64; |
| 355 | |
| 356 | if (sub < 0) |
| 357 | sub += 64; |
| 358 | |
| 359 | return (sub == pi->remote_tx_win); |
| 360 | } |
| 361 | |
| 362 | #define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1 |
| 363 | #define __get_reqseq(ctrl) ((ctrl) & L2CAP_CTRL_REQSEQ) >> 8 |
| 364 | #define __is_iframe(ctrl) !((ctrl) & L2CAP_CTRL_FRAME_TYPE) |
| 365 | #define __is_sframe(ctrl) (ctrl) & L2CAP_CTRL_FRAME_TYPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | void l2cap_load(void); |
| 368 | |
| 369 | #endif /* __L2CAP_H */ |