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 <asm/unaligned.h> 31 32 /* L2CAP defaults */ 33 #define L2CAP_DEFAULT_MTU 672 34 #define L2CAP_DEFAULT_MIN_MTU 48 35 #define L2CAP_DEFAULT_FLUSH_TO 0xffff 36 #define L2CAP_DEFAULT_TX_WINDOW 63 37 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF 38 #define L2CAP_DEFAULT_MAX_TX 3 39 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ 40 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ 41 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ 42 #define L2CAP_DEFAULT_ACK_TO 200 43 #define L2CAP_LE_DEFAULT_MTU 23 44 #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF 45 #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF 46 #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF 47 48 #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ 49 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ 50 51 /* L2CAP socket address */ 52 struct sockaddr_l2 { 53 sa_family_t l2_family; 54 __le16 l2_psm; 55 bdaddr_t l2_bdaddr; 56 __le16 l2_cid; 57 }; 58 59 /* L2CAP socket options */ 60 #define L2CAP_OPTIONS 0x01 61 struct l2cap_options { 62 __u16 omtu; 63 __u16 imtu; 64 __u16 flush_to; 65 __u8 mode; 66 __u8 fcs; 67 __u8 max_tx; 68 __u16 txwin_size; 69 }; 70 71 #define L2CAP_CONNINFO 0x02 72 struct l2cap_conninfo { 73 __u16 hci_handle; 74 __u8 dev_class[3]; 75 }; 76 77 #define L2CAP_LM 0x03 78 #define L2CAP_LM_MASTER 0x0001 79 #define L2CAP_LM_AUTH 0x0002 80 #define L2CAP_LM_ENCRYPT 0x0004 81 #define L2CAP_LM_TRUSTED 0x0008 82 #define L2CAP_LM_RELIABLE 0x0010 83 #define L2CAP_LM_SECURE 0x0020 84 85 /* L2CAP command codes */ 86 #define L2CAP_COMMAND_REJ 0x01 87 #define L2CAP_CONN_REQ 0x02 88 #define L2CAP_CONN_RSP 0x03 89 #define L2CAP_CONF_REQ 0x04 90 #define L2CAP_CONF_RSP 0x05 91 #define L2CAP_DISCONN_REQ 0x06 92 #define L2CAP_DISCONN_RSP 0x07 93 #define L2CAP_ECHO_REQ 0x08 94 #define L2CAP_ECHO_RSP 0x09 95 #define L2CAP_INFO_REQ 0x0a 96 #define L2CAP_INFO_RSP 0x0b 97 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 98 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 99 100 /* L2CAP extended feature mask */ 101 #define L2CAP_FEAT_FLOWCTL 0x00000001 102 #define L2CAP_FEAT_RETRANS 0x00000002 103 #define L2CAP_FEAT_BIDIR_QOS 0x00000004 104 #define L2CAP_FEAT_ERTM 0x00000008 105 #define L2CAP_FEAT_STREAMING 0x00000010 106 #define L2CAP_FEAT_FCS 0x00000020 107 #define L2CAP_FEAT_EXT_FLOW 0x00000040 108 #define L2CAP_FEAT_FIXED_CHAN 0x00000080 109 #define L2CAP_FEAT_EXT_WINDOW 0x00000100 110 #define L2CAP_FEAT_UCD 0x00000200 111 112 /* L2CAP checksum option */ 113 #define L2CAP_FCS_NONE 0x00 114 #define L2CAP_FCS_CRC16 0x01 115 116 /* L2CAP Control Field bit masks */ 117 #define L2CAP_CTRL_SAR 0xC000 118 #define L2CAP_CTRL_REQSEQ 0x3F00 119 #define L2CAP_CTRL_TXSEQ 0x007E 120 #define L2CAP_CTRL_SUPERVISE 0x000C 121 122 #define L2CAP_CTRL_RETRANS 0x0080 123 #define L2CAP_CTRL_FINAL 0x0080 124 #define L2CAP_CTRL_POLL 0x0010 125 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ 126 127 #define L2CAP_CTRL_TXSEQ_SHIFT 1 128 #define L2CAP_CTRL_SUPER_SHIFT 2 129 #define L2CAP_CTRL_REQSEQ_SHIFT 8 130 #define L2CAP_CTRL_SAR_SHIFT 14 131 132 /* L2CAP Extended Control Field bit mask */ 133 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 134 #define L2CAP_EXT_CTRL_SAR 0x00030000 135 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 136 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC 137 138 #define L2CAP_EXT_CTRL_POLL 0x00040000 139 #define L2CAP_EXT_CTRL_FINAL 0x00000002 140 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ 141 142 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 143 #define L2CAP_EXT_CTRL_SAR_SHIFT 16 144 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 145 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 146 147 /* L2CAP Supervisory Function */ 148 #define L2CAP_SUPER_RR 0x00 149 #define L2CAP_SUPER_REJ 0x01 150 #define L2CAP_SUPER_RNR 0x02 151 #define L2CAP_SUPER_SREJ 0x03 152 153 /* L2CAP Segmentation and Reassembly */ 154 #define L2CAP_SAR_UNSEGMENTED 0x00 155 #define L2CAP_SAR_START 0x01 156 #define L2CAP_SAR_END 0x02 157 #define L2CAP_SAR_CONTINUE 0x03 158 159 /* L2CAP Command rej. reasons */ 160 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 161 #define L2CAP_REJ_MTU_EXCEEDED 0x0001 162 #define L2CAP_REJ_INVALID_CID 0x0002 163 164 /* L2CAP structures */ 165 struct l2cap_hdr { 166 __le16 len; 167 __le16 cid; 168 } __packed; 169 #define L2CAP_HDR_SIZE 4 170 #define L2CAP_ENH_HDR_SIZE 6 171 #define L2CAP_EXT_HDR_SIZE 8 172 173 #define L2CAP_FCS_SIZE 2 174 #define L2CAP_SDULEN_SIZE 2 175 #define L2CAP_PSMLEN_SIZE 2 176 177 struct l2cap_cmd_hdr { 178 __u8 code; 179 __u8 ident; 180 __le16 len; 181 } __packed; 182 #define L2CAP_CMD_HDR_SIZE 4 183 184 struct l2cap_cmd_rej_unk { 185 __le16 reason; 186 } __packed; 187 188 struct l2cap_cmd_rej_mtu { 189 __le16 reason; 190 __le16 max_mtu; 191 } __packed; 192 193 struct l2cap_cmd_rej_cid { 194 __le16 reason; 195 __le16 scid; 196 __le16 dcid; 197 } __packed; 198 199 struct l2cap_conn_req { 200 __le16 psm; 201 __le16 scid; 202 } __packed; 203 204 struct l2cap_conn_rsp { 205 __le16 dcid; 206 __le16 scid; 207 __le16 result; 208 __le16 status; 209 } __packed; 210 211 /* channel indentifier */ 212 #define L2CAP_CID_SIGNALING 0x0001 213 #define L2CAP_CID_CONN_LESS 0x0002 214 #define L2CAP_CID_LE_DATA 0x0004 215 #define L2CAP_CID_LE_SIGNALING 0x0005 216 #define L2CAP_CID_SMP 0x0006 217 #define L2CAP_CID_DYN_START 0x0040 218 #define L2CAP_CID_DYN_END 0xffff 219 220 /* connect result */ 221 #define L2CAP_CR_SUCCESS 0x0000 222 #define L2CAP_CR_PEND 0x0001 223 #define L2CAP_CR_BAD_PSM 0x0002 224 #define L2CAP_CR_SEC_BLOCK 0x0003 225 #define L2CAP_CR_NO_MEM 0x0004 226 227 /* connect status */ 228 #define L2CAP_CS_NO_INFO 0x0000 229 #define L2CAP_CS_AUTHEN_PEND 0x0001 230 #define L2CAP_CS_AUTHOR_PEND 0x0002 231 232 struct l2cap_conf_req { 233 __le16 dcid; 234 __le16 flags; 235 __u8 data[0]; 236 } __packed; 237 238 struct l2cap_conf_rsp { 239 __le16 scid; 240 __le16 flags; 241 __le16 result; 242 __u8 data[0]; 243 } __packed; 244 245 #define L2CAP_CONF_SUCCESS 0x0000 246 #define L2CAP_CONF_UNACCEPT 0x0001 247 #define L2CAP_CONF_REJECT 0x0002 248 #define L2CAP_CONF_UNKNOWN 0x0003 249 #define L2CAP_CONF_PENDING 0x0004 250 #define L2CAP_CONF_EFS_REJECT 0x0005 251 252 struct l2cap_conf_opt { 253 __u8 type; 254 __u8 len; 255 __u8 val[0]; 256 } __packed; 257 #define L2CAP_CONF_OPT_SIZE 2 258 259 #define L2CAP_CONF_HINT 0x80 260 #define L2CAP_CONF_MASK 0x7f 261 262 #define L2CAP_CONF_MTU 0x01 263 #define L2CAP_CONF_FLUSH_TO 0x02 264 #define L2CAP_CONF_QOS 0x03 265 #define L2CAP_CONF_RFC 0x04 266 #define L2CAP_CONF_FCS 0x05 267 #define L2CAP_CONF_EFS 0x06 268 #define L2CAP_CONF_EWS 0x07 269 270 #define L2CAP_CONF_MAX_SIZE 22 271 272 struct l2cap_conf_rfc { 273 __u8 mode; 274 __u8 txwin_size; 275 __u8 max_transmit; 276 __le16 retrans_timeout; 277 __le16 monitor_timeout; 278 __le16 max_pdu_size; 279 } __packed; 280 281 #define L2CAP_MODE_BASIC 0x00 282 #define L2CAP_MODE_RETRANS 0x01 283 #define L2CAP_MODE_FLOWCTL 0x02 284 #define L2CAP_MODE_ERTM 0x03 285 #define L2CAP_MODE_STREAMING 0x04 286 287 struct l2cap_conf_efs { 288 __u8 id; 289 __u8 stype; 290 __le16 msdu; 291 __le32 sdu_itime; 292 __le32 acc_lat; 293 __le32 flush_to; 294 } __packed; 295 296 #define L2CAP_SERV_NOTRAFIC 0x00 297 #define L2CAP_SERV_BESTEFFORT 0x01 298 #define L2CAP_SERV_GUARANTEED 0x02 299 300 #define L2CAP_BESTEFFORT_ID 0x01 301 302 struct l2cap_disconn_req { 303 __le16 dcid; 304 __le16 scid; 305 } __packed; 306 307 struct l2cap_disconn_rsp { 308 __le16 dcid; 309 __le16 scid; 310 } __packed; 311 312 struct l2cap_info_req { 313 __le16 type; 314 } __packed; 315 316 struct l2cap_info_rsp { 317 __le16 type; 318 __le16 result; 319 __u8 data[0]; 320 } __packed; 321 322 /* info type */ 323 #define L2CAP_IT_CL_MTU 0x0001 324 #define L2CAP_IT_FEAT_MASK 0x0002 325 #define L2CAP_IT_FIXED_CHAN 0x0003 326 327 /* info result */ 328 #define L2CAP_IR_SUCCESS 0x0000 329 #define L2CAP_IR_NOTSUPP 0x0001 330 331 struct l2cap_conn_param_update_req { 332 __le16 min; 333 __le16 max; 334 __le16 latency; 335 __le16 to_multiplier; 336 } __packed; 337 338 struct l2cap_conn_param_update_rsp { 339 __le16 result; 340 } __packed; 341 342 /* Connection Parameters result */ 343 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 344 #define L2CAP_CONN_PARAM_REJECTED 0x0001 345 346 /* ----- L2CAP channels and connections ----- */ 347 struct srej_list { 348 __u16 tx_seq; 349 struct list_head list; 350 }; 351 352 struct l2cap_chan { 353 struct sock *sk; 354 355 struct l2cap_conn *conn; 356 357 __u8 state; 358 359 atomic_t refcnt; 360 361 __le16 psm; 362 __u16 dcid; 363 __u16 scid; 364 365 __u16 imtu; 366 __u16 omtu; 367 __u16 flush_to; 368 __u8 mode; 369 __u8 chan_type; 370 371 __le16 sport; 372 373 __u8 sec_level; 374 375 __u8 ident; 376 377 __u8 conf_req[64]; 378 __u8 conf_len; 379 __u8 num_conf_req; 380 __u8 num_conf_rsp; 381 382 __u8 fcs; 383 384 __u16 tx_win; 385 __u16 tx_win_max; 386 __u8 max_tx; 387 __u16 retrans_timeout; 388 __u16 monitor_timeout; 389 __u16 mps; 390 391 unsigned long conf_state; 392 unsigned long conn_state; 393 unsigned long flags; 394 395 __u16 next_tx_seq; 396 __u16 expected_ack_seq; 397 __u16 expected_tx_seq; 398 __u16 buffer_seq; 399 __u16 buffer_seq_srej; 400 __u16 srej_save_reqseq; 401 __u16 frames_sent; 402 __u16 unacked_frames; 403 __u8 retry_count; 404 __u8 num_acked; 405 __u16 sdu_len; 406 struct sk_buff *sdu; 407 struct sk_buff *sdu_last_frag; 408 409 __u16 remote_tx_win; 410 __u8 remote_max_tx; 411 __u16 remote_mps; 412 413 __u8 local_id; 414 __u8 local_stype; 415 __u16 local_msdu; 416 __u32 local_sdu_itime; 417 __u32 local_acc_lat; 418 __u32 local_flush_to; 419 420 __u8 remote_id; 421 __u8 remote_stype; 422 __u16 remote_msdu; 423 __u32 remote_sdu_itime; 424 __u32 remote_acc_lat; 425 __u32 remote_flush_to; 426 427 struct timer_list chan_timer; 428 struct timer_list retrans_timer; 429 struct timer_list monitor_timer; 430 struct timer_list ack_timer; 431 struct sk_buff *tx_send_head; 432 struct sk_buff_head tx_q; 433 struct sk_buff_head srej_q; 434 struct list_head srej_l; 435 436 struct list_head list; 437 struct list_head global_l; 438 439 void *data; 440 struct l2cap_ops *ops; 441 }; 442 443 struct l2cap_ops { 444 char *name; 445 446 struct l2cap_chan *(*new_connection) (void *data); 447 int (*recv) (void *data, struct sk_buff *skb); 448 void (*close) (void *data); 449 void (*state_change) (void *data, int state); 450 }; 451 452 struct l2cap_conn { 453 struct hci_conn *hcon; 454 455 bdaddr_t *dst; 456 bdaddr_t *src; 457 458 unsigned int mtu; 459 460 __u32 feat_mask; 461 462 __u8 info_state; 463 __u8 info_ident; 464 465 struct timer_list info_timer; 466 467 spinlock_t lock; 468 469 struct sk_buff *rx_skb; 470 __u32 rx_len; 471 __u8 tx_ident; 472 473 __u8 disc_reason; 474 475 struct timer_list security_timer; 476 struct smp_chan *smp_chan; 477 478 struct list_head chan_l; 479 rwlock_t chan_lock; 480 }; 481 482 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 483 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 484 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 485 486 #define L2CAP_CHAN_RAW 1 487 #define L2CAP_CHAN_CONN_LESS 2 488 #define L2CAP_CHAN_CONN_ORIENTED 3 489 490 /* ----- L2CAP socket info ----- */ 491 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) 492 493 struct l2cap_pinfo { 494 struct bt_sock bt; 495 struct l2cap_chan *chan; 496 struct sk_buff *rx_busy_skb; 497 }; 498 499 enum { 500 CONF_REQ_SENT, 501 CONF_INPUT_DONE, 502 CONF_OUTPUT_DONE, 503 CONF_MTU_DONE, 504 CONF_MODE_DONE, 505 CONF_CONNECT_PEND, 506 CONF_NO_FCS_RECV, 507 CONF_STATE2_DEVICE, 508 CONF_EWS_RECV, 509 CONF_LOC_CONF_PEND, 510 CONF_REM_CONF_PEND, 511 }; 512 513 #define L2CAP_CONF_MAX_CONF_REQ 2 514 #define L2CAP_CONF_MAX_CONF_RSP 2 515 516 enum { 517 CONN_SREJ_SENT, 518 CONN_WAIT_F, 519 CONN_SREJ_ACT, 520 CONN_SEND_PBIT, 521 CONN_REMOTE_BUSY, 522 CONN_LOCAL_BUSY, 523 CONN_REJ_ACT, 524 CONN_SEND_FBIT, 525 CONN_RNR_SENT, 526 }; 527 528 /* Definitions for flags in l2cap_chan */ 529 enum { 530 FLAG_ROLE_SWITCH, 531 FLAG_FORCE_ACTIVE, 532 FLAG_FORCE_RELIABLE, 533 FLAG_FLUSHABLE, 534 FLAG_EXT_CTRL, 535 FLAG_EFS_ENABLE, 536 }; 537 538 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) 539 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) 540 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ 541 L2CAP_DEFAULT_RETRANS_TO); 542 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) 543 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ 544 L2CAP_DEFAULT_MONITOR_TO); 545 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) 546 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ 547 L2CAP_DEFAULT_ACK_TO); 548 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) 549 550 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) 551 { 552 int offset; 553 554 offset = (seq1 - seq2) % (chan->tx_win_max + 1); 555 if (offset < 0) 556 offset += (chan->tx_win_max + 1); 557 558 return offset; 559 } 560 561 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) 562 { 563 return (seq + 1) % (chan->tx_win_max + 1); 564 } 565 566 static inline int l2cap_tx_window_full(struct l2cap_chan *ch) 567 { 568 int sub; 569 570 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; 571 572 if (sub < 0) 573 sub += 64; 574 575 return sub == ch->remote_tx_win; 576 } 577 578 static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl) 579 { 580 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 581 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >> 582 L2CAP_EXT_CTRL_REQSEQ_SHIFT; 583 else 584 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT; 585 } 586 587 static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq) 588 { 589 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 590 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) & 591 L2CAP_EXT_CTRL_REQSEQ; 592 else 593 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ; 594 } 595 596 static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl) 597 { 598 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 599 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >> 600 L2CAP_EXT_CTRL_TXSEQ_SHIFT; 601 else 602 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT; 603 } 604 605 static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq) 606 { 607 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 608 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) & 609 L2CAP_EXT_CTRL_TXSEQ; 610 else 611 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ; 612 } 613 614 static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl) 615 { 616 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 617 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE; 618 else 619 return ctrl & L2CAP_CTRL_FRAME_TYPE; 620 } 621 622 static inline __u32 __set_sframe(struct l2cap_chan *chan) 623 { 624 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 625 return L2CAP_EXT_CTRL_FRAME_TYPE; 626 else 627 return L2CAP_CTRL_FRAME_TYPE; 628 } 629 630 static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl) 631 { 632 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 633 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT; 634 else 635 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT; 636 } 637 638 static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar) 639 { 640 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 641 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR; 642 else 643 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR; 644 } 645 646 static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl) 647 { 648 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START; 649 } 650 651 static inline __u32 __get_sar_mask(struct l2cap_chan *chan) 652 { 653 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 654 return L2CAP_EXT_CTRL_SAR; 655 else 656 return L2CAP_CTRL_SAR; 657 } 658 659 static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl) 660 { 661 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 662 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >> 663 L2CAP_EXT_CTRL_SUPER_SHIFT; 664 else 665 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT; 666 } 667 668 static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) 669 { 670 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 671 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) & 672 L2CAP_EXT_CTRL_SUPERVISE; 673 else 674 return (super << L2CAP_CTRL_SUPER_SHIFT) & 675 L2CAP_CTRL_SUPERVISE; 676 } 677 678 static inline __u32 __set_ctrl_final(struct l2cap_chan *chan) 679 { 680 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 681 return L2CAP_EXT_CTRL_FINAL; 682 else 683 return L2CAP_CTRL_FINAL; 684 } 685 686 static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl) 687 { 688 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 689 return ctrl & L2CAP_EXT_CTRL_FINAL; 690 else 691 return ctrl & L2CAP_CTRL_FINAL; 692 } 693 694 static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan) 695 { 696 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 697 return L2CAP_EXT_CTRL_POLL; 698 else 699 return L2CAP_CTRL_POLL; 700 } 701 702 static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl) 703 { 704 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 705 return ctrl & L2CAP_EXT_CTRL_POLL; 706 else 707 return ctrl & L2CAP_CTRL_POLL; 708 } 709 710 static inline __u32 __get_control(struct l2cap_chan *chan, void *p) 711 { 712 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 713 return get_unaligned_le32(p); 714 else 715 return get_unaligned_le16(p); 716 } 717 718 static inline void __put_control(struct l2cap_chan *chan, __u32 control, 719 void *p) 720 { 721 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 722 return put_unaligned_le32(control, p); 723 else 724 return put_unaligned_le16(control, p); 725 } 726 727 static inline __u8 __ctrl_size(struct l2cap_chan *chan) 728 { 729 if (test_bit(FLAG_EXT_CTRL, &chan->flags)) 730 return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE; 731 else 732 return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE; 733 } 734 735 extern int disable_ertm; 736 737 int l2cap_init_sockets(void); 738 void l2cap_cleanup_sockets(void); 739 740 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); 741 int __l2cap_wait_ack(struct sock *sk); 742 743 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); 744 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); 745 746 struct l2cap_chan *l2cap_chan_create(struct sock *sk); 747 void l2cap_chan_close(struct l2cap_chan *chan, int reason); 748 void l2cap_chan_destroy(struct l2cap_chan *chan); 749 int l2cap_chan_connect(struct l2cap_chan *chan); 750 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); 751 void l2cap_chan_busy(struct l2cap_chan *chan, int busy); 752 753 #endif /* __L2CAP_H */ 754