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 /* L2CAP defaults */ 31 #define L2CAP_DEFAULT_MTU 672 32 #define L2CAP_DEFAULT_MIN_MTU 48 33 #define L2CAP_DEFAULT_FLUSH_TO 0xffff 34 #define L2CAP_DEFAULT_TX_WINDOW 63 35 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF 36 #define L2CAP_DEFAULT_MAX_TX 3 37 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ 38 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ 39 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ 40 #define L2CAP_DEFAULT_ACK_TO 200 41 #define L2CAP_LE_DEFAULT_MTU 23 42 43 #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ 44 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ 45 46 /* L2CAP socket address */ 47 struct sockaddr_l2 { 48 sa_family_t l2_family; 49 __le16 l2_psm; 50 bdaddr_t l2_bdaddr; 51 __le16 l2_cid; 52 }; 53 54 /* L2CAP socket options */ 55 #define L2CAP_OPTIONS 0x01 56 struct l2cap_options { 57 __u16 omtu; 58 __u16 imtu; 59 __u16 flush_to; 60 __u8 mode; 61 __u8 fcs; 62 __u8 max_tx; 63 __u16 txwin_size; 64 }; 65 66 #define L2CAP_CONNINFO 0x02 67 struct l2cap_conninfo { 68 __u16 hci_handle; 69 __u8 dev_class[3]; 70 }; 71 72 #define L2CAP_LM 0x03 73 #define L2CAP_LM_MASTER 0x0001 74 #define L2CAP_LM_AUTH 0x0002 75 #define L2CAP_LM_ENCRYPT 0x0004 76 #define L2CAP_LM_TRUSTED 0x0008 77 #define L2CAP_LM_RELIABLE 0x0010 78 #define L2CAP_LM_SECURE 0x0020 79 80 /* L2CAP command codes */ 81 #define L2CAP_COMMAND_REJ 0x01 82 #define L2CAP_CONN_REQ 0x02 83 #define L2CAP_CONN_RSP 0x03 84 #define L2CAP_CONF_REQ 0x04 85 #define L2CAP_CONF_RSP 0x05 86 #define L2CAP_DISCONN_REQ 0x06 87 #define L2CAP_DISCONN_RSP 0x07 88 #define L2CAP_ECHO_REQ 0x08 89 #define L2CAP_ECHO_RSP 0x09 90 #define L2CAP_INFO_REQ 0x0a 91 #define L2CAP_INFO_RSP 0x0b 92 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 93 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 94 95 /* L2CAP extended feature mask */ 96 #define L2CAP_FEAT_FLOWCTL 0x00000001 97 #define L2CAP_FEAT_RETRANS 0x00000002 98 #define L2CAP_FEAT_BIDIR_QOS 0x00000004 99 #define L2CAP_FEAT_ERTM 0x00000008 100 #define L2CAP_FEAT_STREAMING 0x00000010 101 #define L2CAP_FEAT_FCS 0x00000020 102 #define L2CAP_FEAT_EXT_FLOW 0x00000040 103 #define L2CAP_FEAT_FIXED_CHAN 0x00000080 104 #define L2CAP_FEAT_EXT_WINDOW 0x00000100 105 #define L2CAP_FEAT_UCD 0x00000200 106 107 /* L2CAP checksum option */ 108 #define L2CAP_FCS_NONE 0x00 109 #define L2CAP_FCS_CRC16 0x01 110 111 /* L2CAP Control Field bit masks */ 112 #define L2CAP_CTRL_SAR 0xC000 113 #define L2CAP_CTRL_REQSEQ 0x3F00 114 #define L2CAP_CTRL_TXSEQ 0x007E 115 #define L2CAP_CTRL_SUPERVISE 0x000C 116 117 #define L2CAP_CTRL_RETRANS 0x0080 118 #define L2CAP_CTRL_FINAL 0x0080 119 #define L2CAP_CTRL_POLL 0x0010 120 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ 121 122 #define L2CAP_CTRL_TXSEQ_SHIFT 1 123 #define L2CAP_CTRL_SUPER_SHIFT 2 124 #define L2CAP_CTRL_REQSEQ_SHIFT 8 125 #define L2CAP_CTRL_SAR_SHIFT 14 126 127 /* L2CAP Extended Control Field bit mask */ 128 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 129 #define L2CAP_EXT_CTRL_SAR 0x00030000 130 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 131 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC 132 133 #define L2CAP_EXT_CTRL_POLL 0x00040000 134 #define L2CAP_EXT_CTRL_FINAL 0x00000002 135 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ 136 137 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 138 #define L2CAP_EXT_CTRL_SAR_SHIFT 16 139 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 140 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 141 142 /* L2CAP Supervisory Function */ 143 #define L2CAP_SUPER_RR 0x00 144 #define L2CAP_SUPER_REJ 0x01 145 #define L2CAP_SUPER_RNR 0x02 146 #define L2CAP_SUPER_SREJ 0x03 147 148 /* L2CAP Segmentation and Reassembly */ 149 #define L2CAP_SAR_UNSEGMENTED 0x00 150 #define L2CAP_SAR_START 0x01 151 #define L2CAP_SAR_END 0x02 152 #define L2CAP_SAR_CONTINUE 0x03 153 154 /* L2CAP Command rej. reasons */ 155 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 156 #define L2CAP_REJ_MTU_EXCEEDED 0x0001 157 #define L2CAP_REJ_INVALID_CID 0x0002 158 159 /* L2CAP structures */ 160 struct l2cap_hdr { 161 __le16 len; 162 __le16 cid; 163 } __packed; 164 #define L2CAP_HDR_SIZE 4 165 166 struct l2cap_cmd_hdr { 167 __u8 code; 168 __u8 ident; 169 __le16 len; 170 } __packed; 171 #define L2CAP_CMD_HDR_SIZE 4 172 173 struct l2cap_cmd_rej_unk { 174 __le16 reason; 175 } __packed; 176 177 struct l2cap_cmd_rej_mtu { 178 __le16 reason; 179 __le16 max_mtu; 180 } __packed; 181 182 struct l2cap_cmd_rej_cid { 183 __le16 reason; 184 __le16 scid; 185 __le16 dcid; 186 } __packed; 187 188 struct l2cap_conn_req { 189 __le16 psm; 190 __le16 scid; 191 } __packed; 192 193 struct l2cap_conn_rsp { 194 __le16 dcid; 195 __le16 scid; 196 __le16 result; 197 __le16 status; 198 } __packed; 199 200 /* channel indentifier */ 201 #define L2CAP_CID_SIGNALING 0x0001 202 #define L2CAP_CID_CONN_LESS 0x0002 203 #define L2CAP_CID_LE_DATA 0x0004 204 #define L2CAP_CID_LE_SIGNALING 0x0005 205 #define L2CAP_CID_SMP 0x0006 206 #define L2CAP_CID_DYN_START 0x0040 207 #define L2CAP_CID_DYN_END 0xffff 208 209 /* connect result */ 210 #define L2CAP_CR_SUCCESS 0x0000 211 #define L2CAP_CR_PEND 0x0001 212 #define L2CAP_CR_BAD_PSM 0x0002 213 #define L2CAP_CR_SEC_BLOCK 0x0003 214 #define L2CAP_CR_NO_MEM 0x0004 215 216 /* connect status */ 217 #define L2CAP_CS_NO_INFO 0x0000 218 #define L2CAP_CS_AUTHEN_PEND 0x0001 219 #define L2CAP_CS_AUTHOR_PEND 0x0002 220 221 struct l2cap_conf_req { 222 __le16 dcid; 223 __le16 flags; 224 __u8 data[0]; 225 } __packed; 226 227 struct l2cap_conf_rsp { 228 __le16 scid; 229 __le16 flags; 230 __le16 result; 231 __u8 data[0]; 232 } __packed; 233 234 #define L2CAP_CONF_SUCCESS 0x0000 235 #define L2CAP_CONF_UNACCEPT 0x0001 236 #define L2CAP_CONF_REJECT 0x0002 237 #define L2CAP_CONF_UNKNOWN 0x0003 238 239 struct l2cap_conf_opt { 240 __u8 type; 241 __u8 len; 242 __u8 val[0]; 243 } __packed; 244 #define L2CAP_CONF_OPT_SIZE 2 245 246 #define L2CAP_CONF_HINT 0x80 247 #define L2CAP_CONF_MASK 0x7f 248 249 #define L2CAP_CONF_MTU 0x01 250 #define L2CAP_CONF_FLUSH_TO 0x02 251 #define L2CAP_CONF_QOS 0x03 252 #define L2CAP_CONF_RFC 0x04 253 #define L2CAP_CONF_FCS 0x05 254 #define L2CAP_CONF_EWS 0x07 255 256 #define L2CAP_CONF_MAX_SIZE 22 257 258 struct l2cap_conf_rfc { 259 __u8 mode; 260 __u8 txwin_size; 261 __u8 max_transmit; 262 __le16 retrans_timeout; 263 __le16 monitor_timeout; 264 __le16 max_pdu_size; 265 } __packed; 266 267 #define L2CAP_MODE_BASIC 0x00 268 #define L2CAP_MODE_RETRANS 0x01 269 #define L2CAP_MODE_FLOWCTL 0x02 270 #define L2CAP_MODE_ERTM 0x03 271 #define L2CAP_MODE_STREAMING 0x04 272 273 struct l2cap_disconn_req { 274 __le16 dcid; 275 __le16 scid; 276 } __packed; 277 278 struct l2cap_disconn_rsp { 279 __le16 dcid; 280 __le16 scid; 281 } __packed; 282 283 struct l2cap_info_req { 284 __le16 type; 285 } __packed; 286 287 struct l2cap_info_rsp { 288 __le16 type; 289 __le16 result; 290 __u8 data[0]; 291 } __packed; 292 293 /* info type */ 294 #define L2CAP_IT_CL_MTU 0x0001 295 #define L2CAP_IT_FEAT_MASK 0x0002 296 #define L2CAP_IT_FIXED_CHAN 0x0003 297 298 /* info result */ 299 #define L2CAP_IR_SUCCESS 0x0000 300 #define L2CAP_IR_NOTSUPP 0x0001 301 302 struct l2cap_conn_param_update_req { 303 __le16 min; 304 __le16 max; 305 __le16 latency; 306 __le16 to_multiplier; 307 } __packed; 308 309 struct l2cap_conn_param_update_rsp { 310 __le16 result; 311 } __packed; 312 313 /* Connection Parameters result */ 314 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 315 #define L2CAP_CONN_PARAM_REJECTED 0x0001 316 317 /* ----- L2CAP channels and connections ----- */ 318 struct srej_list { 319 __u16 tx_seq; 320 struct list_head list; 321 }; 322 323 struct l2cap_chan { 324 struct sock *sk; 325 326 struct l2cap_conn *conn; 327 328 __u8 state; 329 330 atomic_t refcnt; 331 332 __le16 psm; 333 __u16 dcid; 334 __u16 scid; 335 336 __u16 imtu; 337 __u16 omtu; 338 __u16 flush_to; 339 __u8 mode; 340 __u8 chan_type; 341 342 __le16 sport; 343 344 __u8 sec_level; 345 346 __u8 ident; 347 348 __u8 conf_req[64]; 349 __u8 conf_len; 350 __u8 num_conf_req; 351 __u8 num_conf_rsp; 352 353 __u8 fcs; 354 355 __u16 tx_win; 356 __u8 max_tx; 357 __u16 retrans_timeout; 358 __u16 monitor_timeout; 359 __u16 mps; 360 361 unsigned long conf_state; 362 unsigned long conn_state; 363 unsigned long flags; 364 365 __u16 next_tx_seq; 366 __u16 expected_ack_seq; 367 __u16 expected_tx_seq; 368 __u16 buffer_seq; 369 __u16 buffer_seq_srej; 370 __u16 srej_save_reqseq; 371 __u16 frames_sent; 372 __u16 unacked_frames; 373 __u8 retry_count; 374 __u8 num_acked; 375 __u16 sdu_len; 376 struct sk_buff *sdu; 377 struct sk_buff *sdu_last_frag; 378 379 __u16 remote_tx_win; 380 __u8 remote_max_tx; 381 __u16 remote_mps; 382 383 struct timer_list chan_timer; 384 struct timer_list retrans_timer; 385 struct timer_list monitor_timer; 386 struct timer_list ack_timer; 387 struct sk_buff *tx_send_head; 388 struct sk_buff_head tx_q; 389 struct sk_buff_head srej_q; 390 struct list_head srej_l; 391 392 struct list_head list; 393 struct list_head global_l; 394 395 void *data; 396 struct l2cap_ops *ops; 397 }; 398 399 struct l2cap_ops { 400 char *name; 401 402 struct l2cap_chan *(*new_connection) (void *data); 403 int (*recv) (void *data, struct sk_buff *skb); 404 void (*close) (void *data); 405 void (*state_change) (void *data, int state); 406 }; 407 408 struct l2cap_conn { 409 struct hci_conn *hcon; 410 411 bdaddr_t *dst; 412 bdaddr_t *src; 413 414 unsigned int mtu; 415 416 __u32 feat_mask; 417 418 __u8 info_state; 419 __u8 info_ident; 420 421 struct timer_list info_timer; 422 423 spinlock_t lock; 424 425 struct sk_buff *rx_skb; 426 __u32 rx_len; 427 __u8 tx_ident; 428 429 __u8 disc_reason; 430 431 struct timer_list security_timer; 432 struct smp_chan *smp_chan; 433 434 struct list_head chan_l; 435 rwlock_t chan_lock; 436 }; 437 438 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 439 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 440 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 441 442 #define L2CAP_CHAN_RAW 1 443 #define L2CAP_CHAN_CONN_LESS 2 444 #define L2CAP_CHAN_CONN_ORIENTED 3 445 446 /* ----- L2CAP socket info ----- */ 447 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) 448 449 struct l2cap_pinfo { 450 struct bt_sock bt; 451 struct l2cap_chan *chan; 452 struct sk_buff *rx_busy_skb; 453 }; 454 455 enum { 456 CONF_REQ_SENT, 457 CONF_INPUT_DONE, 458 CONF_OUTPUT_DONE, 459 CONF_MTU_DONE, 460 CONF_MODE_DONE, 461 CONF_CONNECT_PEND, 462 CONF_NO_FCS_RECV, 463 CONF_STATE2_DEVICE, 464 CONF_EWS_RECV, 465 }; 466 467 #define L2CAP_CONF_MAX_CONF_REQ 2 468 #define L2CAP_CONF_MAX_CONF_RSP 2 469 470 enum { 471 CONN_SREJ_SENT, 472 CONN_WAIT_F, 473 CONN_SREJ_ACT, 474 CONN_SEND_PBIT, 475 CONN_REMOTE_BUSY, 476 CONN_LOCAL_BUSY, 477 CONN_REJ_ACT, 478 CONN_SEND_FBIT, 479 CONN_RNR_SENT, 480 }; 481 482 /* Definitions for flags in l2cap_chan */ 483 enum { 484 FLAG_ROLE_SWITCH, 485 FLAG_FORCE_ACTIVE, 486 FLAG_FORCE_RELIABLE, 487 FLAG_FLUSHABLE, 488 FLAG_EXT_CTRL, 489 }; 490 491 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) 492 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) 493 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ 494 L2CAP_DEFAULT_RETRANS_TO); 495 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) 496 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ 497 L2CAP_DEFAULT_MONITOR_TO); 498 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) 499 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ 500 L2CAP_DEFAULT_ACK_TO); 501 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) 502 503 static inline int l2cap_tx_window_full(struct l2cap_chan *ch) 504 { 505 int sub; 506 507 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; 508 509 if (sub < 0) 510 sub += 64; 511 512 return sub == ch->remote_tx_win; 513 } 514 515 static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl) 516 { 517 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 518 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >> 519 L2CAP_EXT_CTRL_REQSEQ_SHIFT; 520 else 521 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT; 522 } 523 524 static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq) 525 { 526 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 527 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) & 528 L2CAP_EXT_CTRL_REQSEQ; 529 else 530 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ; 531 } 532 533 static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl) 534 { 535 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 536 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >> 537 L2CAP_EXT_CTRL_TXSEQ_SHIFT; 538 else 539 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT; 540 } 541 542 static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq) 543 { 544 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 545 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) & 546 L2CAP_EXT_CTRL_TXSEQ; 547 else 548 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ; 549 } 550 551 static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl) 552 { 553 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 554 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE; 555 else 556 return ctrl & L2CAP_CTRL_FRAME_TYPE; 557 } 558 559 static inline __u32 __set_sframe(struct l2cap_chan *chan) 560 { 561 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 562 return L2CAP_EXT_CTRL_FRAME_TYPE; 563 else 564 return L2CAP_CTRL_FRAME_TYPE; 565 } 566 567 static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl) 568 { 569 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 570 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT; 571 else 572 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT; 573 } 574 575 static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar) 576 { 577 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 578 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR; 579 else 580 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR; 581 } 582 583 static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl) 584 { 585 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START; 586 } 587 588 static inline __u32 __get_sar_mask(struct l2cap_chan *chan) 589 { 590 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 591 return L2CAP_EXT_CTRL_SAR; 592 else 593 return L2CAP_CTRL_SAR; 594 } 595 596 static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl) 597 { 598 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 599 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >> 600 L2CAP_EXT_CTRL_SUPER_SHIFT; 601 else 602 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT; 603 } 604 605 static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) 606 { 607 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 608 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) & 609 L2CAP_EXT_CTRL_SUPERVISE; 610 else 611 return (super << L2CAP_CTRL_SUPER_SHIFT) & 612 L2CAP_CTRL_SUPERVISE; 613 } 614 615 extern int disable_ertm; 616 617 int l2cap_init_sockets(void); 618 void l2cap_cleanup_sockets(void); 619 620 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); 621 int __l2cap_wait_ack(struct sock *sk); 622 623 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); 624 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); 625 626 struct l2cap_chan *l2cap_chan_create(struct sock *sk); 627 void l2cap_chan_close(struct l2cap_chan *chan, int reason); 628 void l2cap_chan_destroy(struct l2cap_chan *chan); 629 int l2cap_chan_connect(struct l2cap_chan *chan); 630 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); 631 void l2cap_chan_busy(struct l2cap_chan *chan, int busy); 632 633 #endif /* __L2CAP_H */ 634