| | 1 | /* |
| | 2 | BlueZ - Bluetooth protocol stack for Linux |
| | 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
| | 4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
| | 5 | Copyright (C) 2010 Google Inc. |
| | 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 |
| | 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 |
| | 20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| | 21 | |
| | 22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| | 23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| | 24 | SOFTWARE IS DISCLAIMED. |
| | 25 | */ |
| | 26 | |
| | 27 | #ifndef __L2CAP_H |
| | 28 | #define __L2CAP_H |
| | 29 | |
| | 30 | #include <linux/unaligned.h> |
| | 31 | #include <linux/atomic.h> |
| | 32 | |
| | 33 | /* L2CAP defaults */ |
| | 34 | #define L2CAP_DEFAULT_MTU 672 |
| | 35 | #define L2CAP_DEFAULT_MIN_MTU 48 |
| | 36 | #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF |
| | 37 | #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF |
| | 38 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
| | 39 | #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
| | 40 | #define L2CAP_DEFAULT_MAX_TX 3 |
| | 41 | #define L2CAP_DEFAULT_RETRANS_TO 2 /* seconds */ |
| | 42 | #define L2CAP_DEFAULT_MONITOR_TO 12 /* seconds */ |
| | 43 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */ |
| | 44 | #define L2CAP_DEFAULT_ACK_TO 200 |
| | 45 | #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF |
| | 46 | #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF |
| | 47 | #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF |
| | 48 | #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */ |
| | 49 | #define L2CAP_LE_MIN_MTU 23 |
| | 50 | #define L2CAP_ECRED_CONN_SCID_MAX 5 |
| | 51 | |
| | 52 | #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100) |
| | 53 | #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000) |
| | 54 | #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000) |
| | 55 | #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000) |
| | 56 | #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000) |
| | 57 | #define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000) |
| | 58 | #define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000) |
| | 59 | #define L2CAP_WAIT_ACK_POLL_PERIOD msecs_to_jiffies(200) |
| | 60 | #define L2CAP_WAIT_ACK_TIMEOUT msecs_to_jiffies(10000) |
| | 61 | |
| | 62 | /* L2CAP socket address */ |
| | 63 | struct sockaddr_l2 { |
| | 64 | sa_family_t l2_family; |
| | 65 | __le16 l2_psm; |
| | 66 | bdaddr_t l2_bdaddr; |
| | 67 | __le16 l2_cid; |
| | 68 | __u8 l2_bdaddr_type; |
| | 69 | }; |
| | 70 | |
| | 71 | /* L2CAP socket options */ |
| | 72 | #define L2CAP_OPTIONS 0x01 |
| | 73 | struct l2cap_options { |
| | 74 | __u16 omtu; |
| | 75 | __u16 imtu; |
| | 76 | __u16 flush_to; |
| | 77 | __u8 mode; |
| | 78 | __u8 fcs; |
| | 79 | __u8 max_tx; |
| | 80 | __u16 txwin_size; |
| | 81 | }; |
| | 82 | |
| | 83 | #define L2CAP_CONNINFO 0x02 |
| | 84 | struct l2cap_conninfo { |
| | 85 | __u16 hci_handle; |
| | 86 | __u8 dev_class[3]; |
| | 87 | }; |
| | 88 | |
| | 89 | #define L2CAP_LM 0x03 |
| | 90 | #define L2CAP_LM_MASTER 0x0001 |
| | 91 | #define L2CAP_LM_AUTH 0x0002 |
| | 92 | #define L2CAP_LM_ENCRYPT 0x0004 |
| | 93 | #define L2CAP_LM_TRUSTED 0x0008 |
| | 94 | #define L2CAP_LM_RELIABLE 0x0010 |
| | 95 | #define L2CAP_LM_SECURE 0x0020 |
| | 96 | #define L2CAP_LM_FIPS 0x0040 |
| | 97 | |
| | 98 | /* L2CAP command codes */ |
| | 99 | #define L2CAP_COMMAND_REJ 0x01 |
| | 100 | #define L2CAP_CONN_REQ 0x02 |
| | 101 | #define L2CAP_CONN_RSP 0x03 |
| | 102 | #define L2CAP_CONF_REQ 0x04 |
| | 103 | #define L2CAP_CONF_RSP 0x05 |
| | 104 | #define L2CAP_DISCONN_REQ 0x06 |
| | 105 | #define L2CAP_DISCONN_RSP 0x07 |
| | 106 | #define L2CAP_ECHO_REQ 0x08 |
| | 107 | #define L2CAP_ECHO_RSP 0x09 |
| | 108 | #define L2CAP_INFO_REQ 0x0a |
| | 109 | #define L2CAP_INFO_RSP 0x0b |
| | 110 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
| | 111 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 |
| | 112 | #define L2CAP_LE_CONN_REQ 0x14 |
| | 113 | #define L2CAP_LE_CONN_RSP 0x15 |
| | 114 | #define L2CAP_LE_CREDITS 0x16 |
| | 115 | #define L2CAP_ECRED_CONN_REQ 0x17 |
| | 116 | #define L2CAP_ECRED_CONN_RSP 0x18 |
| | 117 | #define L2CAP_ECRED_RECONF_REQ 0x19 |
| | 118 | #define L2CAP_ECRED_RECONF_RSP 0x1a |
| | 119 | |
| | 120 | /* L2CAP extended feature mask */ |
| | 121 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
| | 122 | #define L2CAP_FEAT_RETRANS 0x00000002 |
| | 123 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
| | 124 | #define L2CAP_FEAT_ERTM 0x00000008 |
| | 125 | #define L2CAP_FEAT_STREAMING 0x00000010 |
| | 126 | #define L2CAP_FEAT_FCS 0x00000020 |
| | 127 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
| | 128 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
| | 129 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
| | 130 | #define L2CAP_FEAT_UCD 0x00000200 |
| | 131 | |
| | 132 | /* L2CAP checksum option */ |
| | 133 | #define L2CAP_FCS_NONE 0x00 |
| | 134 | #define L2CAP_FCS_CRC16 0x01 |
| | 135 | |
| | 136 | /* L2CAP fixed channels */ |
| | 137 | #define L2CAP_FC_SIG_BREDR 0x02 |
| | 138 | #define L2CAP_FC_CONNLESS 0x04 |
| | 139 | #define L2CAP_FC_ATT 0x10 |
| | 140 | #define L2CAP_FC_SIG_LE 0x20 |
| | 141 | #define L2CAP_FC_SMP_LE 0x40 |
| | 142 | #define L2CAP_FC_SMP_BREDR 0x80 |
| | 143 | |
| | 144 | /* L2CAP Control Field bit masks */ |
| | 145 | #define L2CAP_CTRL_SAR 0xC000 |
| | 146 | #define L2CAP_CTRL_REQSEQ 0x3F00 |
| | 147 | #define L2CAP_CTRL_TXSEQ 0x007E |
| | 148 | #define L2CAP_CTRL_SUPERVISE 0x000C |
| | 149 | |
| | 150 | #define L2CAP_CTRL_RETRANS 0x0080 |
| | 151 | #define L2CAP_CTRL_FINAL 0x0080 |
| | 152 | #define L2CAP_CTRL_POLL 0x0010 |
| | 153 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ |
| | 154 | |
| | 155 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 |
| | 156 | #define L2CAP_CTRL_SUPER_SHIFT 2 |
| | 157 | #define L2CAP_CTRL_POLL_SHIFT 4 |
| | 158 | #define L2CAP_CTRL_FINAL_SHIFT 7 |
| | 159 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 |
| | 160 | #define L2CAP_CTRL_SAR_SHIFT 14 |
| | 161 | |
| | 162 | /* L2CAP Extended Control Field bit mask */ |
| | 163 | #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 |
| | 164 | #define L2CAP_EXT_CTRL_SAR 0x00030000 |
| | 165 | #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 |
| | 166 | #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC |
| | 167 | |
| | 168 | #define L2CAP_EXT_CTRL_POLL 0x00040000 |
| | 169 | #define L2CAP_EXT_CTRL_FINAL 0x00000002 |
| | 170 | #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ |
| | 171 | |
| | 172 | #define L2CAP_EXT_CTRL_FINAL_SHIFT 1 |
| | 173 | #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 |
| | 174 | #define L2CAP_EXT_CTRL_SAR_SHIFT 16 |
| | 175 | #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 |
| | 176 | #define L2CAP_EXT_CTRL_POLL_SHIFT 18 |
| | 177 | #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 |
| | 178 | |
| | 179 | /* L2CAP Supervisory Function */ |
| | 180 | #define L2CAP_SUPER_RR 0x00 |
| | 181 | #define L2CAP_SUPER_REJ 0x01 |
| | 182 | #define L2CAP_SUPER_RNR 0x02 |
| | 183 | #define L2CAP_SUPER_SREJ 0x03 |
| | 184 | |
| | 185 | /* L2CAP Segmentation and Reassembly */ |
| | 186 | #define L2CAP_SAR_UNSEGMENTED 0x00 |
| | 187 | #define L2CAP_SAR_START 0x01 |
| | 188 | #define L2CAP_SAR_END 0x02 |
| | 189 | #define L2CAP_SAR_CONTINUE 0x03 |
| | 190 | |
| | 191 | /* L2CAP Command rej. reasons */ |
| | 192 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
| | 193 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 |
| | 194 | #define L2CAP_REJ_INVALID_CID 0x0002 |
| | 195 | |
| | 196 | /* L2CAP structures */ |
| | 197 | struct l2cap_hdr { |
| | 198 | __le16 len; |
| | 199 | __le16 cid; |
| | 200 | } __packed; |
| | 201 | #define L2CAP_LEN_SIZE 2 |
| | 202 | #define L2CAP_HDR_SIZE 4 |
| | 203 | #define L2CAP_ENH_HDR_SIZE 6 |
| | 204 | #define L2CAP_EXT_HDR_SIZE 8 |
| | 205 | |
| | 206 | #define L2CAP_FCS_SIZE 2 |
| | 207 | #define L2CAP_SDULEN_SIZE 2 |
| | 208 | #define L2CAP_PSMLEN_SIZE 2 |
| | 209 | #define L2CAP_ENH_CTRL_SIZE 2 |
| | 210 | #define L2CAP_EXT_CTRL_SIZE 4 |
| | 211 | |
| | 212 | struct l2cap_cmd_hdr { |
| | 213 | __u8 code; |
| | 214 | __u8 ident; |
| | 215 | __le16 len; |
| | 216 | } __packed; |
| | 217 | #define L2CAP_CMD_HDR_SIZE 4 |
| | 218 | |
| | 219 | struct l2cap_cmd_rej_unk { |
| | 220 | __le16 reason; |
| | 221 | } __packed; |
| | 222 | |
| | 223 | struct l2cap_cmd_rej_mtu { |
| | 224 | __le16 reason; |
| | 225 | __le16 max_mtu; |
| | 226 | } __packed; |
| | 227 | |
| | 228 | struct l2cap_cmd_rej_cid { |
| | 229 | __le16 reason; |
| | 230 | __le16 scid; |
| | 231 | __le16 dcid; |
| | 232 | } __packed; |
| | 233 | |
| | 234 | struct l2cap_conn_req { |
| | 235 | __le16 psm; |
| | 236 | __le16 scid; |
| | 237 | } __packed; |
| | 238 | |
| | 239 | struct l2cap_conn_rsp { |
| | 240 | __le16 dcid; |
| | 241 | __le16 scid; |
| | 242 | __le16 result; |
| | 243 | __le16 status; |
| | 244 | } __packed; |
| | 245 | |
| | 246 | /* protocol/service multiplexer (PSM) */ |
| | 247 | #define L2CAP_PSM_SDP 0x0001 |
| | 248 | #define L2CAP_PSM_RFCOMM 0x0003 |
| | 249 | #define L2CAP_PSM_3DSP 0x0021 |
| | 250 | #define L2CAP_PSM_IPSP 0x0023 /* 6LoWPAN */ |
| | 251 | |
| | 252 | #define L2CAP_PSM_DYN_START 0x1001 |
| | 253 | #define L2CAP_PSM_DYN_END 0xffff |
| | 254 | #define L2CAP_PSM_AUTO_END 0x10ff |
| | 255 | #define L2CAP_PSM_LE_DYN_START 0x0080 |
| | 256 | #define L2CAP_PSM_LE_DYN_END 0x00ff |
| | 257 | |
| | 258 | /* channel identifier */ |
| | 259 | #define L2CAP_CID_SIGNALING 0x0001 |
| | 260 | #define L2CAP_CID_CONN_LESS 0x0002 |
| | 261 | #define L2CAP_CID_ATT 0x0004 |
| | 262 | #define L2CAP_CID_LE_SIGNALING 0x0005 |
| | 263 | #define L2CAP_CID_SMP 0x0006 |
| | 264 | #define L2CAP_CID_SMP_BREDR 0x0007 |
| | 265 | #define L2CAP_CID_DYN_START 0x0040 |
| | 266 | #define L2CAP_CID_DYN_END 0xffff |
| | 267 | #define L2CAP_CID_LE_DYN_END 0x007f |
| | 268 | |
| | 269 | /* connect/create channel results */ |
| | 270 | #define L2CAP_CR_SUCCESS 0x0000 |
| | 271 | #define L2CAP_CR_PEND 0x0001 |
| | 272 | #define L2CAP_CR_BAD_PSM 0x0002 |
| | 273 | #define L2CAP_CR_SEC_BLOCK 0x0003 |
| | 274 | #define L2CAP_CR_NO_MEM 0x0004 |
| | 275 | #define L2CAP_CR_INVALID_SCID 0x0006 |
| | 276 | #define L2CAP_CR_SCID_IN_USE 0x0007 |
| | 277 | |
| | 278 | /* credit based connect results */ |
| | 279 | #define L2CAP_CR_LE_SUCCESS 0x0000 |
| | 280 | #define L2CAP_CR_LE_BAD_PSM 0x0002 |
| | 281 | #define L2CAP_CR_LE_NO_MEM 0x0004 |
| | 282 | #define L2CAP_CR_LE_AUTHENTICATION 0x0005 |
| | 283 | #define L2CAP_CR_LE_AUTHORIZATION 0x0006 |
| | 284 | #define L2CAP_CR_LE_BAD_KEY_SIZE 0x0007 |
| | 285 | #define L2CAP_CR_LE_ENCRYPTION 0x0008 |
| | 286 | #define L2CAP_CR_LE_INVALID_SCID 0x0009 |
| | 287 | #define L2CAP_CR_LE_SCID_IN_USE 0X000A |
| | 288 | #define L2CAP_CR_LE_UNACCEPT_PARAMS 0X000B |
| | 289 | #define L2CAP_CR_LE_INVALID_PARAMS 0X000C |
| | 290 | |
| | 291 | /* connect/create channel status */ |
| | 292 | #define L2CAP_CS_NO_INFO 0x0000 |
| | 293 | #define L2CAP_CS_AUTHEN_PEND 0x0001 |
| | 294 | #define L2CAP_CS_AUTHOR_PEND 0x0002 |
| | 295 | |
| | 296 | struct l2cap_conf_req { |
| | 297 | __le16 dcid; |
| | 298 | __le16 flags; |
| | 299 | __u8 data[]; |
| | 300 | } __packed; |
| | 301 | |
| | 302 | struct l2cap_conf_rsp { |
| | 303 | __le16 scid; |
| | 304 | __le16 flags; |
| | 305 | __le16 result; |
| | 306 | __u8 data[]; |
| | 307 | } __packed; |
| | 308 | |
| | 309 | #define L2CAP_CONF_SUCCESS 0x0000 |
| | 310 | #define L2CAP_CONF_UNACCEPT 0x0001 |
| | 311 | #define L2CAP_CONF_REJECT 0x0002 |
| | 312 | #define L2CAP_CONF_UNKNOWN 0x0003 |
| | 313 | #define L2CAP_CONF_PENDING 0x0004 |
| | 314 | #define L2CAP_CONF_EFS_REJECT 0x0005 |
| | 315 | |
| | 316 | /* configuration req/rsp continuation flag */ |
| | 317 | #define L2CAP_CONF_FLAG_CONTINUATION 0x0001 |
| | 318 | |
| | 319 | struct l2cap_conf_opt { |
| | 320 | __u8 type; |
| | 321 | __u8 len; |
| | 322 | __u8 val[]; |
| | 323 | } __packed; |
| | 324 | #define L2CAP_CONF_OPT_SIZE 2 |
| | 325 | |
| | 326 | #define L2CAP_CONF_HINT 0x80 |
| | 327 | #define L2CAP_CONF_MASK 0x7f |
| | 328 | |
| | 329 | #define L2CAP_CONF_MTU 0x01 |
| | 330 | #define L2CAP_CONF_FLUSH_TO 0x02 |
| | 331 | #define L2CAP_CONF_QOS 0x03 |
| | 332 | #define L2CAP_CONF_RFC 0x04 |
| | 333 | #define L2CAP_CONF_FCS 0x05 |
| | 334 | #define L2CAP_CONF_EFS 0x06 |
| | 335 | #define L2CAP_CONF_EWS 0x07 |
| | 336 | |
| | 337 | #define L2CAP_CONF_MAX_SIZE 22 |
| | 338 | |
| | 339 | struct l2cap_conf_rfc { |
| | 340 | __u8 mode; |
| | 341 | __u8 txwin_size; |
| | 342 | __u8 max_transmit; |
| | 343 | __le16 retrans_timeout; |
| | 344 | __le16 monitor_timeout; |
| | 345 | __le16 max_pdu_size; |
| | 346 | } __packed; |
| | 347 | |
| | 348 | #define L2CAP_MODE_BASIC 0x00 |
| | 349 | #define L2CAP_MODE_RETRANS 0x01 |
| | 350 | #define L2CAP_MODE_FLOWCTL 0x02 |
| | 351 | #define L2CAP_MODE_ERTM 0x03 |
| | 352 | #define L2CAP_MODE_STREAMING 0x04 |
| | 353 | |
| | 354 | /* Unlike the above this one doesn't actually map to anything that would |
| | 355 | * ever be sent over the air. Therefore, use a value that's unlikely to |
| | 356 | * ever be used in the BR/EDR configuration phase. |
| | 357 | */ |
| | 358 | #define L2CAP_MODE_LE_FLOWCTL 0x80 |
| | 359 | #define L2CAP_MODE_EXT_FLOWCTL 0x81 |
| | 360 | |
| | 361 | struct l2cap_conf_efs { |
| | 362 | __u8 id; |
| | 363 | __u8 stype; |
| | 364 | __le16 msdu; |
| | 365 | __le32 sdu_itime; |
| | 366 | __le32 acc_lat; |
| | 367 | __le32 flush_to; |
| | 368 | } __packed; |
| | 369 | |
| | 370 | #define L2CAP_SERV_NOTRAFIC 0x00 |
| | 371 | #define L2CAP_SERV_BESTEFFORT 0x01 |
| | 372 | #define L2CAP_SERV_GUARANTEED 0x02 |
| | 373 | |
| | 374 | #define L2CAP_BESTEFFORT_ID 0x01 |
| | 375 | |
| | 376 | struct l2cap_disconn_req { |
| | 377 | __le16 dcid; |
| | 378 | __le16 scid; |
| | 379 | } __packed; |
| | 380 | |
| | 381 | struct l2cap_disconn_rsp { |
| | 382 | __le16 dcid; |
| | 383 | __le16 scid; |
| | 384 | } __packed; |
| | 385 | |
| | 386 | struct l2cap_info_req { |
| | 387 | __le16 type; |
| | 388 | } __packed; |
| | 389 | |
| | 390 | struct l2cap_info_rsp { |
| | 391 | __le16 type; |
| | 392 | __le16 result; |
| | 393 | __u8 data[]; |
| | 394 | } __packed; |
| | 395 | |
| | 396 | #define L2CAP_MR_SUCCESS 0x0000 |
| | 397 | #define L2CAP_MR_PEND 0x0001 |
| | 398 | #define L2CAP_MR_BAD_ID 0x0002 |
| | 399 | #define L2CAP_MR_SAME_ID 0x0003 |
| | 400 | #define L2CAP_MR_NOT_SUPP 0x0004 |
| | 401 | #define L2CAP_MR_COLLISION 0x0005 |
| | 402 | #define L2CAP_MR_NOT_ALLOWED 0x0006 |
| | 403 | |
| | 404 | struct l2cap_move_chan_cfm { |
| | 405 | __le16 icid; |
| | 406 | __le16 result; |
| | 407 | } __packed; |
| | 408 | |
| | 409 | #define L2CAP_MC_CONFIRMED 0x0000 |
| | 410 | #define L2CAP_MC_UNCONFIRMED 0x0001 |
| | 411 | |
| | 412 | struct l2cap_move_chan_cfm_rsp { |
| | 413 | __le16 icid; |
| | 414 | } __packed; |
| | 415 | |
| | 416 | /* info type */ |
| | 417 | #define L2CAP_IT_CL_MTU 0x0001 |
| | 418 | #define L2CAP_IT_FEAT_MASK 0x0002 |
| | 419 | #define L2CAP_IT_FIXED_CHAN 0x0003 |
| | 420 | |
| | 421 | /* info result */ |
| | 422 | #define L2CAP_IR_SUCCESS 0x0000 |
| | 423 | #define L2CAP_IR_NOTSUPP 0x0001 |
| | 424 | |
| | 425 | struct l2cap_conn_param_update_req { |
| | 426 | __le16 min; |
| | 427 | __le16 max; |
| | 428 | __le16 latency; |
| | 429 | __le16 to_multiplier; |
| | 430 | } __packed; |
| | 431 | |
| | 432 | struct l2cap_conn_param_update_rsp { |
| | 433 | __le16 result; |
| | 434 | } __packed; |
| | 435 | |
| | 436 | /* Connection Parameters result */ |
| | 437 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 |
| | 438 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 |
| | 439 | |
| | 440 | struct l2cap_le_conn_req { |
| | 441 | __le16 psm; |
| | 442 | __le16 scid; |
| | 443 | __le16 mtu; |
| | 444 | __le16 mps; |
| | 445 | __le16 credits; |
| | 446 | } __packed; |
| | 447 | |
| | 448 | struct l2cap_le_conn_rsp { |
| | 449 | __le16 dcid; |
| | 450 | __le16 mtu; |
| | 451 | __le16 mps; |
| | 452 | __le16 credits; |
| | 453 | __le16 result; |
| | 454 | } __packed; |
| | 455 | |
| | 456 | struct l2cap_le_credits { |
| | 457 | __le16 cid; |
| | 458 | __le16 credits; |
| | 459 | } __packed; |
| | 460 | |
| | 461 | #define L2CAP_ECRED_MIN_MTU 64 |
| | 462 | #define L2CAP_ECRED_MIN_MPS 64 |
| | 463 | #define L2CAP_ECRED_MAX_CID 5 |
| | 464 | |
| | 465 | struct l2cap_ecred_conn_req { |
| | 466 | /* New members must be added within the struct_group() macro below. */ |
| | 467 | __struct_group(l2cap_ecred_conn_req_hdr, hdr, __packed, |
| | 468 | __le16 psm; |
| | 469 | __le16 mtu; |
| | 470 | __le16 mps; |
| | 471 | __le16 credits; |
| | 472 | ); |
| | 473 | __le16 scid[]; |
| | 474 | } __packed; |
| | 475 | |
| | 476 | struct l2cap_ecred_conn_rsp { |
| | 477 | /* New members must be added within the struct_group() macro below. */ |
| | 478 | struct_group_tagged(l2cap_ecred_conn_rsp_hdr, hdr, |
| | 479 | __le16 mtu; |
| | 480 | __le16 mps; |
| | 481 | __le16 credits; |
| | 482 | __le16 result; |
| | 483 | ); |
| | 484 | __le16 dcid[]; |
| | 485 | }; |
| | 486 | |
| | 487 | struct l2cap_ecred_reconf_req { |
| | 488 | __le16 mtu; |
| | 489 | __le16 mps; |
| | 490 | __le16 scid[]; |
| | 491 | } __packed; |
| | 492 | |
| | 493 | #define L2CAP_RECONF_SUCCESS 0x0000 |
| | 494 | #define L2CAP_RECONF_INVALID_MTU 0x0001 |
| | 495 | #define L2CAP_RECONF_INVALID_MPS 0x0002 |
| | 496 | |
| | 497 | struct l2cap_ecred_reconf_rsp { |
| | 498 | __le16 result; |
| | 499 | } __packed; |
| | 500 | |
| | 501 | /* ----- L2CAP channels and connections ----- */ |
| | 502 | struct l2cap_seq_list { |
| | 503 | __u16 head; |
| | 504 | __u16 tail; |
| | 505 | __u16 mask; |
| | 506 | __u16 *list; |
| | 507 | }; |
| | 508 | |
| | 509 | #define L2CAP_SEQ_LIST_CLEAR 0xFFFF |
| | 510 | #define L2CAP_SEQ_LIST_TAIL 0x8000 |
| | 511 | |
| | 512 | struct l2cap_chan { |
| | 513 | struct l2cap_conn *conn; |
| | 514 | struct kref kref; |
| | 515 | atomic_t nesting; |
| | 516 | |
| | 517 | __u8 state; |
| | 518 | |
| | 519 | bdaddr_t dst; |
| | 520 | __u8 dst_type; |
| | 521 | bdaddr_t src; |
| | 522 | __u8 src_type; |
| | 523 | __le16 psm; |
| | 524 | __le16 sport; |
| | 525 | __u16 dcid; |
| | 526 | __u16 scid; |
| | 527 | |
| | 528 | __u16 imtu; |
| | 529 | __u16 omtu; |
| | 530 | __u16 flush_to; |
| | 531 | __u8 mode; |
| | 532 | __u8 chan_type; |
| | 533 | __u8 chan_policy; |
| | 534 | |
| | 535 | __u8 sec_level; |
| | 536 | |
| | 537 | __u8 ident; |
| | 538 | |
| | 539 | __u8 conf_req[64]; |
| | 540 | __u8 conf_len; |
| | 541 | __u8 num_conf_req; |
| | 542 | __u8 num_conf_rsp; |
| | 543 | |
| | 544 | __u8 fcs; |
| | 545 | |
| | 546 | __u16 tx_win; |
| | 547 | __u16 tx_win_max; |
| | 548 | __u16 ack_win; |
| | 549 | __u8 max_tx; |
| | 550 | __u16 retrans_timeout; |
| | 551 | __u16 monitor_timeout; |
| | 552 | __u16 mps; |
| | 553 | |
| | 554 | __u16 tx_credits; |
| | 555 | __u16 rx_credits; |
| | 556 | |
| | 557 | /* estimated available receive buffer space or -1 if unknown */ |
| | 558 | ssize_t rx_avail; |
| | 559 | |
| | 560 | __u8 tx_state; |
| | 561 | __u8 rx_state; |
| | 562 | |
| | 563 | unsigned long conf_state; |
| | 564 | unsigned long conn_state; |
| | 565 | unsigned long flags; |
| | 566 | |
| | 567 | __u16 next_tx_seq; |
| | 568 | __u16 expected_ack_seq; |
| | 569 | __u16 expected_tx_seq; |
| | 570 | __u16 buffer_seq; |
| | 571 | __u16 srej_save_reqseq; |
| | 572 | __u16 last_acked_seq; |
| | 573 | __u16 frames_sent; |
| | 574 | __u16 unacked_frames; |
| | 575 | __u8 retry_count; |
| | 576 | __u16 sdu_len; |
| | 577 | struct sk_buff *sdu; |
| | 578 | struct sk_buff *sdu_last_frag; |
| | 579 | |
| | 580 | __u16 remote_tx_win; |
| | 581 | __u8 remote_max_tx; |
| | 582 | __u16 remote_mps; |
| | 583 | |
| | 584 | __u8 local_id; |
| | 585 | __u8 local_stype; |
| | 586 | __u16 local_msdu; |
| | 587 | __u32 local_sdu_itime; |
| | 588 | __u32 local_acc_lat; |
| | 589 | __u32 local_flush_to; |
| | 590 | |
| | 591 | __u8 remote_id; |
| | 592 | __u8 remote_stype; |
| | 593 | __u16 remote_msdu; |
| | 594 | __u32 remote_sdu_itime; |
| | 595 | __u32 remote_acc_lat; |
| | 596 | __u32 remote_flush_to; |
| | 597 | |
| | 598 | struct delayed_work chan_timer; |
| | 599 | struct delayed_work retrans_timer; |
| | 600 | struct delayed_work monitor_timer; |
| | 601 | struct delayed_work ack_timer; |
| | 602 | |
| | 603 | struct sk_buff *tx_send_head; |
| | 604 | struct sk_buff_head tx_q; |
| | 605 | struct sk_buff_head srej_q; |
| | 606 | struct l2cap_seq_list srej_list; |
| | 607 | struct l2cap_seq_list retrans_list; |
| | 608 | |
| | 609 | struct list_head list; |
| | 610 | struct list_head global_l; |
| | 611 | |
| | 612 | void *data; |
| | 613 | const struct l2cap_ops *ops; |
| | 614 | struct mutex lock; |
| | 615 | }; |
| | 616 | |
| | 617 | struct l2cap_ops { |
| | 618 | char *name; |
| | 619 | |
| | 620 | struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan); |
| | 621 | int (*recv) (struct l2cap_chan * chan, |
| | 622 | struct sk_buff *skb); |
| | 623 | void (*teardown) (struct l2cap_chan *chan, int err); |
| | 624 | void (*close) (struct l2cap_chan *chan); |
| | 625 | void (*state_change) (struct l2cap_chan *chan, |
| | 626 | int state, int err); |
| | 627 | void (*ready) (struct l2cap_chan *chan); |
| | 628 | void (*defer) (struct l2cap_chan *chan); |
| | 629 | void (*resume) (struct l2cap_chan *chan); |
| | 630 | void (*suspend) (struct l2cap_chan *chan); |
| | 631 | void (*set_shutdown) (struct l2cap_chan *chan); |
| | 632 | long (*get_sndtimeo) (struct l2cap_chan *chan); |
| | 633 | struct pid *(*get_peer_pid) (struct l2cap_chan *chan); |
| | 634 | struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, |
| | 635 | unsigned long hdr_len, |
| | 636 | unsigned long len, int nb); |
| | 637 | int (*filter) (struct l2cap_chan * chan, |
| | 638 | struct sk_buff *skb); |
| | 639 | }; |
| | 640 | |
| | 641 | struct l2cap_conn { |
| | 642 | struct hci_conn *hcon; |
| | 643 | struct hci_chan *hchan; |
| | 644 | |
| | 645 | unsigned int mtu; |
| | 646 | |
| | 647 | __u32 feat_mask; |
| | 648 | __u8 remote_fixed_chan; |
| | 649 | __u8 local_fixed_chan; |
| | 650 | |
| | 651 | __u8 info_state; |
| | 652 | __u8 info_ident; |
| | 653 | |
| | 654 | struct delayed_work info_timer; |
| | 655 | |
| | 656 | struct sk_buff *rx_skb; |
| | 657 | __u32 rx_len; |
| | 658 | __u8 tx_ident; |
| | 659 | struct mutex ident_lock; |
| | 660 | |
| | 661 | struct sk_buff_head pending_rx; |
| | 662 | struct work_struct pending_rx_work; |
| | 663 | |
| | 664 | struct delayed_work id_addr_timer; |
| | 665 | |
| | 666 | __u8 disc_reason; |
| | 667 | |
| | 668 | struct l2cap_chan *smp; |
| | 669 | |
| | 670 | struct list_head chan_l; |
| | 671 | struct mutex lock; |
| | 672 | struct kref ref; |
| | 673 | struct list_head users; |
| | 674 | }; |
| | 675 | |
| | 676 | struct l2cap_user { |
| | 677 | struct list_head list; |
| | 678 | int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user); |
| | 679 | void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user); |
| | 680 | }; |
| | 681 | |
| | 682 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
| | 683 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
| | 684 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 |
| | 685 | |
| | 686 | #define L2CAP_CHAN_RAW 1 |
| | 687 | #define L2CAP_CHAN_CONN_LESS 2 |
| | 688 | #define L2CAP_CHAN_CONN_ORIENTED 3 |
| | 689 | #define L2CAP_CHAN_FIXED 4 |
| | 690 | |
| | 691 | /* ----- L2CAP socket info ----- */ |
| | 692 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
| | 693 | |
| | 694 | struct l2cap_rx_busy { |
| | 695 | struct list_head list; |
| | 696 | struct sk_buff *skb; |
| | 697 | }; |
| | 698 | |
| | 699 | struct l2cap_pinfo { |
| | 700 | struct bt_sock bt; |
| | 701 | struct l2cap_chan *chan; |
| | 702 | struct list_head rx_busy; |
| | 703 | }; |
| | 704 | |
| | 705 | enum { |
| | 706 | CONF_REQ_SENT, |
| | 707 | CONF_INPUT_DONE, |
| | 708 | CONF_OUTPUT_DONE, |
| | 709 | CONF_MTU_DONE, |
| | 710 | CONF_MODE_DONE, |
| | 711 | CONF_CONNECT_PEND, |
| | 712 | CONF_RECV_NO_FCS, |
| | 713 | CONF_STATE2_DEVICE, |
| | 714 | CONF_EWS_RECV, |
| | 715 | CONF_LOC_CONF_PEND, |
| | 716 | CONF_REM_CONF_PEND, |
| | 717 | CONF_NOT_COMPLETE, |
| | 718 | }; |
| | 719 | |
| | 720 | #define L2CAP_CONF_MAX_CONF_REQ 2 |
| | 721 | #define L2CAP_CONF_MAX_CONF_RSP 2 |
| | 722 | |
| | 723 | enum { |
| | 724 | CONN_SREJ_SENT, |
| | 725 | CONN_WAIT_F, |
| | 726 | CONN_SREJ_ACT, |
| | 727 | CONN_SEND_PBIT, |
| | 728 | CONN_REMOTE_BUSY, |
| | 729 | CONN_LOCAL_BUSY, |
| | 730 | CONN_REJ_ACT, |
| | 731 | CONN_SEND_FBIT, |
| | 732 | CONN_RNR_SENT, |
| | 733 | }; |
| | 734 | |
| | 735 | /* Definitions for flags in l2cap_chan */ |
| | 736 | enum { |
| | 737 | FLAG_ROLE_SWITCH, |
| | 738 | FLAG_FORCE_ACTIVE, |
| | 739 | FLAG_FORCE_RELIABLE, |
| | 740 | FLAG_FLUSHABLE, |
| | 741 | FLAG_EXT_CTRL, |
| | 742 | FLAG_EFS_ENABLE, |
| | 743 | FLAG_DEFER_SETUP, |
| | 744 | FLAG_LE_CONN_REQ_SENT, |
| | 745 | FLAG_ECRED_CONN_REQ_SENT, |
| | 746 | FLAG_PENDING_SECURITY, |
| | 747 | FLAG_HOLD_HCI_CONN, |
| | 748 | }; |
| | 749 | |
| | 750 | /* Lock nesting levels for L2CAP channels. We need these because lockdep |
| | 751 | * otherwise considers all channels equal and will e.g. complain about a |
| | 752 | * connection oriented channel triggering SMP procedures or a listening |
| | 753 | * channel creating and locking a child channel. |
| | 754 | */ |
| | 755 | enum { |
| | 756 | L2CAP_NESTING_SMP, |
| | 757 | L2CAP_NESTING_NORMAL, |
| | 758 | L2CAP_NESTING_PARENT, |
| | 759 | }; |
| | 760 | |
| | 761 | enum { |
| | 762 | L2CAP_TX_STATE_XMIT, |
| | 763 | L2CAP_TX_STATE_WAIT_F, |
| | 764 | }; |
| | 765 | |
| | 766 | enum { |
| | 767 | L2CAP_RX_STATE_RECV, |
| | 768 | L2CAP_RX_STATE_SREJ_SENT, |
| | 769 | L2CAP_RX_STATE_MOVE, |
| | 770 | L2CAP_RX_STATE_WAIT_P, |
| | 771 | L2CAP_RX_STATE_WAIT_F, |
| | 772 | }; |
| | 773 | |
| | 774 | enum { |
| | 775 | L2CAP_TXSEQ_EXPECTED, |
| | 776 | L2CAP_TXSEQ_EXPECTED_SREJ, |
| | 777 | L2CAP_TXSEQ_UNEXPECTED, |
| | 778 | L2CAP_TXSEQ_UNEXPECTED_SREJ, |
| | 779 | L2CAP_TXSEQ_DUPLICATE, |
| | 780 | L2CAP_TXSEQ_DUPLICATE_SREJ, |
| | 781 | L2CAP_TXSEQ_INVALID, |
| | 782 | L2CAP_TXSEQ_INVALID_IGNORE, |
| | 783 | }; |
| | 784 | |
| | 785 | enum { |
| | 786 | L2CAP_EV_DATA_REQUEST, |
| | 787 | L2CAP_EV_LOCAL_BUSY_DETECTED, |
| | 788 | L2CAP_EV_LOCAL_BUSY_CLEAR, |
| | 789 | L2CAP_EV_RECV_REQSEQ_AND_FBIT, |
| | 790 | L2CAP_EV_RECV_FBIT, |
| | 791 | L2CAP_EV_RETRANS_TO, |
| | 792 | L2CAP_EV_MONITOR_TO, |
| | 793 | L2CAP_EV_EXPLICIT_POLL, |
| | 794 | L2CAP_EV_RECV_IFRAME, |
| | 795 | L2CAP_EV_RECV_RR, |
| | 796 | L2CAP_EV_RECV_REJ, |
| | 797 | L2CAP_EV_RECV_RNR, |
| | 798 | L2CAP_EV_RECV_SREJ, |
| | 799 | L2CAP_EV_RECV_FRAME, |
| | 800 | }; |
| | 801 | |
| | 802 | enum { |
| | 803 | L2CAP_MOVE_ROLE_NONE, |
| | 804 | L2CAP_MOVE_ROLE_INITIATOR, |
| | 805 | L2CAP_MOVE_ROLE_RESPONDER, |
| | 806 | }; |
| | 807 | |
| | 808 | enum { |
| | 809 | L2CAP_MOVE_STABLE, |
| | 810 | L2CAP_MOVE_WAIT_REQ, |
| | 811 | L2CAP_MOVE_WAIT_RSP, |
| | 812 | L2CAP_MOVE_WAIT_RSP_SUCCESS, |
| | 813 | L2CAP_MOVE_WAIT_CONFIRM, |
| | 814 | L2CAP_MOVE_WAIT_CONFIRM_RSP, |
| | 815 | L2CAP_MOVE_WAIT_LOGICAL_COMP, |
| | 816 | L2CAP_MOVE_WAIT_LOGICAL_CFM, |
| | 817 | L2CAP_MOVE_WAIT_LOCAL_BUSY, |
| | 818 | L2CAP_MOVE_WAIT_PREPARE, |
| | 819 | }; |
| | 820 | |
| | 821 | void l2cap_chan_hold(struct l2cap_chan *c); |
| | 822 | struct l2cap_chan *l2cap_chan_hold_unless_zero(struct l2cap_chan *c); |
| | 823 | void l2cap_chan_put(struct l2cap_chan *c); |
| | 824 | |
| | 825 | static inline void l2cap_chan_lock(struct l2cap_chan *chan) |
| | 826 | { |
| | 827 | mutex_lock_nested(&chan->lock, atomic_read(&chan->nesting)); |
| | 828 | } |
| | 829 | |
| | 830 | static inline void l2cap_chan_unlock(struct l2cap_chan *chan) |
| | 831 | { |
| | 832 | mutex_unlock(&chan->lock); |
| | 833 | } |
| | 834 | |
| | 835 | static inline void l2cap_set_timer(struct l2cap_chan *chan, |
| | 836 | struct delayed_work *work, long timeout) |
| | 837 | { |
| | 838 | BT_DBG("chan %p state %s timeout %ld", chan, |
| | 839 | state_to_string(chan->state), timeout); |
| | 840 | |
| | 841 | /* If delayed work cancelled do not hold(chan) |
| | 842 | since it is already done with previous set_timer */ |
| | 843 | if (!cancel_delayed_work(work)) |
| | 844 | l2cap_chan_hold(chan); |
| | 845 | |
| | 846 | schedule_delayed_work(work, timeout); |
| | 847 | } |
| | 848 | |
| | 849 | static inline bool l2cap_clear_timer(struct l2cap_chan *chan, |
| | 850 | struct delayed_work *work) |
| | 851 | { |
| | 852 | bool ret; |
| | 853 | |
| | 854 | /* put(chan) if delayed work cancelled otherwise it |
| | 855 | is done in delayed work function */ |
| | 856 | ret = cancel_delayed_work(work); |
| | 857 | if (ret) |
| | 858 | l2cap_chan_put(chan); |
| | 859 | |
| | 860 | return ret; |
| | 861 | } |
| | 862 | |
| | 863 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
| | 864 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) |
| | 865 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) |
| | 866 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) |
| | 867 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ |
| | 868 | msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO)); |
| | 869 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) |
| | 870 | |
| | 871 | static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) |
| | 872 | { |
| | 873 | if (seq1 >= seq2) |
| | 874 | return seq1 - seq2; |
| | 875 | else |
| | 876 | return chan->tx_win_max + 1 - seq2 + seq1; |
| | 877 | } |
| | 878 | |
| | 879 | static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) |
| | 880 | { |
| | 881 | return (seq + 1) % (chan->tx_win_max + 1); |
| | 882 | } |
| | 883 | |
| | 884 | static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan) |
| | 885 | { |
| | 886 | return NULL; |
| | 887 | } |
| | 888 | |
| | 889 | static inline int l2cap_chan_no_recv(struct l2cap_chan *chan, struct sk_buff *skb) |
| | 890 | { |
| | 891 | return -ENOSYS; |
| | 892 | } |
| | 893 | |
| | 894 | static inline struct sk_buff *l2cap_chan_no_alloc_skb(struct l2cap_chan *chan, |
| | 895 | unsigned long hdr_len, |
| | 896 | unsigned long len, int nb) |
| | 897 | { |
| | 898 | return ERR_PTR(-ENOSYS); |
| | 899 | } |
| | 900 | |
| | 901 | static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err) |
| | 902 | { |
| | 903 | } |
| | 904 | |
| | 905 | static inline void l2cap_chan_no_close(struct l2cap_chan *chan) |
| | 906 | { |
| | 907 | } |
| | 908 | |
| | 909 | static inline void l2cap_chan_no_ready(struct l2cap_chan *chan) |
| | 910 | { |
| | 911 | } |
| | 912 | |
| | 913 | static inline void l2cap_chan_no_state_change(struct l2cap_chan *chan, |
| | 914 | int state, int err) |
| | 915 | { |
| | 916 | } |
| | 917 | |
| | 918 | static inline void l2cap_chan_no_defer(struct l2cap_chan *chan) |
| | 919 | { |
| | 920 | } |
| | 921 | |
| | 922 | static inline void l2cap_chan_no_suspend(struct l2cap_chan *chan) |
| | 923 | { |
| | 924 | } |
| | 925 | |
| | 926 | static inline void l2cap_chan_no_resume(struct l2cap_chan *chan) |
| | 927 | { |
| | 928 | } |
| | 929 | |
| | 930 | static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan) |
| | 931 | { |
| | 932 | } |
| | 933 | |
| | 934 | static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan) |
| | 935 | { |
| | 936 | return 0; |
| | 937 | } |
| | 938 | |
| | 939 | extern bool disable_ertm; |
| | 940 | extern bool enable_ecred; |
| | 941 | |
| | 942 | int l2cap_init_sockets(void); |
| | 943 | void l2cap_cleanup_sockets(void); |
| | 944 | bool l2cap_is_socket(struct socket *sock); |
| | 945 | |
| | 946 | void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan); |
| | 947 | void __l2cap_ecred_conn_rsp_defer(struct l2cap_chan *chan); |
| | 948 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
| | 949 | |
| | 950 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
| | 951 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); |
| | 952 | |
| | 953 | struct l2cap_chan *l2cap_chan_create(void); |
| | 954 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
| | 955 | int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, |
| | 956 | bdaddr_t *dst, u8 dst_type, u16 timeout); |
| | 957 | int l2cap_chan_reconfigure(struct l2cap_chan *chan, __u16 mtu); |
| | 958 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, |
| | 959 | const struct sockcm_cookie *sockc); |
| | 960 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
| | 961 | void l2cap_chan_rx_avail(struct l2cap_chan *chan, ssize_t rx_avail); |
| | 962 | int l2cap_chan_check_security(struct l2cap_chan *chan, bool initiator); |
| | 963 | void l2cap_chan_set_defaults(struct l2cap_chan *chan); |
| | 964 | int l2cap_ertm_init(struct l2cap_chan *chan); |
| | 965 | void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); |
| | 966 | void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan); |
| | 967 | typedef void (*l2cap_chan_func_t)(struct l2cap_chan *chan, void *data); |
| | 968 | void l2cap_chan_list(struct l2cap_conn *conn, l2cap_chan_func_t func, |
| | 969 | void *data); |
| | 970 | void l2cap_chan_del(struct l2cap_chan *chan, int err); |
| | 971 | void l2cap_send_conn_req(struct l2cap_chan *chan); |
| | 972 | |
| | 973 | struct l2cap_conn *l2cap_conn_get(struct l2cap_conn *conn); |
| | 974 | struct l2cap_conn *l2cap_conn_hold_unless_zero(struct l2cap_conn *conn); |
| | 975 | void l2cap_conn_put(struct l2cap_conn *conn); |
| | 976 | |
| | 977 | int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user); |
| | 978 | void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user); |
| | 979 | |
| | 980 | #endif /* __L2CAP_H */ |
projects / linux-2.6-block.git / blame_incremental