1/****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19/****************************************************************************** 20 * 21 * This file contains L2CAP internal definitions 22 * 23 ******************************************************************************/ 24#ifndef L2C_INT_H 25#define L2C_INT_H 26 27#include "l2c_api.h" 28#include "l2cdefs.h" 29#include "gki.h" 30#include "btm_api.h" 31 32#define L2CAP_MIN_MTU 48 /* Minimum acceptable MTU is 48 bytes */ 33 34/* Timeouts. Since L2CAP works off a 1-second list, all are in seconds. 35*/ 36#define L2CAP_LINK_ROLE_SWITCH_TOUT 10 /* 10 seconds */ 37#define L2CAP_LINK_CONNECT_TOUT 60 /* 30 seconds */ 38#define L2CAP_LINK_CONNECT_TOUT_EXT 120 /* 120 seconds */ 39#define L2CAP_ECHO_RSP_TOUT 30 /* 30 seconds */ 40#define L2CAP_LINK_FLOW_CONTROL_TOUT 2 /* 2 seconds */ 41#define L2CAP_LINK_DISCONNECT_TOUT 30 /* 30 seconds */ 42 43#ifndef L2CAP_CHNL_CONNECT_TOUT /* BTIF needs to override for internal project needs */ 44#define L2CAP_CHNL_CONNECT_TOUT 60 /* 60 seconds */ 45#endif 46 47#define L2CAP_CHNL_CONNECT_TOUT_EXT 120 /* 120 seconds */ 48#define L2CAP_CHNL_CFG_TIMEOUT 30 /* 30 seconds */ 49#define L2CAP_CHNL_DISCONNECT_TOUT 10 /* 10 seconds */ 50#define L2CAP_DELAY_CHECK_SM4 2 /* 2 seconds */ 51#define L2CAP_WAIT_INFO_RSP_TOUT 3 /* 3 seconds */ 52#define L2CAP_WAIT_UNPARK_TOUT 2 /* 2 seconds */ 53#define L2CAP_LINK_INFO_RESP_TOUT 2 /* 2 seconds */ 54#define L2CAP_BLE_LINK_CONNECT_TOUT 30 /* 30 seconds */ 55#define L2CAP_BLE_CONN_PARAM_UPD_TOUT 30 /* 30 seconds */ 56 57/* quick timer uses millisecond unit */ 58#define L2CAP_DEFAULT_RETRANS_TOUT 2000 /* 2000 milliseconds */ 59#define L2CAP_DEFAULT_MONITOR_TOUT 12000 /* 12000 milliseconds */ 60#define L2CAP_FCR_ACK_TOUT 200 /* 200 milliseconds */ 61 62/* Define the possible L2CAP channel states. The names of 63** the states may seem a bit strange, but they are taken from 64** the Bluetooth specification. 65*/ 66typedef enum 67{ 68 CST_CLOSED, /* Channel is in clodes state */ 69 CST_ORIG_W4_SEC_COMP, /* Originator waits security clearence */ 70 CST_TERM_W4_SEC_COMP, /* Acceptor waits security clearence */ 71 CST_W4_L2CAP_CONNECT_RSP, /* Waiting for peer conenct response */ 72 CST_W4_L2CA_CONNECT_RSP, /* Waiting for upper layer connect rsp */ 73 CST_CONFIG, /* Negotiating configuration */ 74 CST_OPEN, /* Data transfer state */ 75 CST_W4_L2CAP_DISCONNECT_RSP, /* Waiting for peer disconnect rsp */ 76 CST_W4_L2CA_DISCONNECT_RSP /* Waiting for upper layer disc rsp */ 77} tL2C_CHNL_STATE; 78 79/* Define the possible L2CAP link states 80*/ 81typedef enum 82{ 83 LST_DISCONNECTED, 84 LST_CONNECT_HOLDING, 85 LST_CONNECTING_WAIT_SWITCH, 86 LST_CONNECTING, 87 LST_CONNECTED, 88 LST_DISCONNECTING 89} tL2C_LINK_STATE; 90 91 92 93/* Define input events to the L2CAP link and channel state machines. The names 94** of the events may seem a bit strange, but they are taken from 95** the Bluetooth specification. 96*/ 97#define L2CEVT_LP_CONNECT_CFM 0 /* Lower layer connect confirm */ 98#define L2CEVT_LP_CONNECT_CFM_NEG 1 /* Lower layer connect confirm (failed) */ 99#define L2CEVT_LP_CONNECT_IND 2 /* Lower layer connect indication */ 100#define L2CEVT_LP_DISCONNECT_IND 3 /* Lower layer disconnect indication */ 101#define L2CEVT_LP_QOS_CFM 4 /* Lower layer QOS confirmation */ 102#define L2CEVT_LP_QOS_CFM_NEG 5 /* Lower layer QOS confirmation (failed)*/ 103#define L2CEVT_LP_QOS_VIOLATION_IND 6 /* Lower layer QOS violation indication */ 104 105#define L2CEVT_SEC_COMP 7 /* Security cleared successfully */ 106#define L2CEVT_SEC_COMP_NEG 8 /* Security procedure failed */ 107 108#define L2CEVT_L2CAP_CONNECT_REQ 10 /* Peer connection request */ 109#define L2CEVT_L2CAP_CONNECT_RSP 11 /* Peer connection response */ 110#define L2CEVT_L2CAP_CONNECT_RSP_PND 12 /* Peer connection response pending */ 111#define L2CEVT_L2CAP_CONNECT_RSP_NEG 13 /* Peer connection response (failed) */ 112#define L2CEVT_L2CAP_CONFIG_REQ 14 /* Peer configuration request */ 113#define L2CEVT_L2CAP_CONFIG_RSP 15 /* Peer configuration response */ 114#define L2CEVT_L2CAP_CONFIG_RSP_NEG 16 /* Peer configuration response (failed) */ 115#define L2CEVT_L2CAP_DISCONNECT_REQ 17 /* Peer disconnect request */ 116#define L2CEVT_L2CAP_DISCONNECT_RSP 18 /* Peer disconnect response */ 117#define L2CEVT_L2CAP_INFO_RSP 19 /* Peer information response */ 118#define L2CEVT_L2CAP_DATA 20 /* Peer data */ 119 120#define L2CEVT_L2CA_CONNECT_REQ 21 /* Upper layer connect request */ 121#define L2CEVT_L2CA_CONNECT_RSP 22 /* Upper layer connect response */ 122#define L2CEVT_L2CA_CONNECT_RSP_NEG 23 /* Upper layer connect response (failed)*/ 123#define L2CEVT_L2CA_CONFIG_REQ 24 /* Upper layer config request */ 124#define L2CEVT_L2CA_CONFIG_RSP 25 /* Upper layer config response */ 125#define L2CEVT_L2CA_CONFIG_RSP_NEG 26 /* Upper layer config response (failed) */ 126#define L2CEVT_L2CA_DISCONNECT_REQ 27 /* Upper layer disconnect request */ 127#define L2CEVT_L2CA_DISCONNECT_RSP 28 /* Upper layer disconnect response */ 128#define L2CEVT_L2CA_DATA_READ 29 /* Upper layer data read */ 129#define L2CEVT_L2CA_DATA_WRITE 30 /* Upper layer data write */ 130#define L2CEVT_L2CA_FLUSH_REQ 31 /* Upper layer flush */ 131 132#define L2CEVT_TIMEOUT 32 /* Timeout */ 133#define L2CEVT_SEC_RE_SEND_CMD 33 /* btm_sec has enough info to proceed */ 134 135#define L2CEVT_ACK_TIMEOUT 34 /* RR delay timeout */ 136 137 138/* Bitmask to skip over Broadcom feature reserved (ID) to avoid sending two 139 successive ID values, '0' id only or both */ 140#define L2CAP_ADJ_BRCM_ID 0x1 141#define L2CAP_ADJ_ZERO_ID 0x2 142#define L2CAP_ADJ_ID 0x3 143 144/* Return values for l2cu_process_peer_cfg_req() */ 145#define L2CAP_PEER_CFG_UNACCEPTABLE 0 146#define L2CAP_PEER_CFG_OK 1 147#define L2CAP_PEER_CFG_DISCONNECT 2 148 149/* eL2CAP option constants */ 150#define L2CAP_MIN_RETRANS_TOUT 2000 /* Min retransmission timeout if no flush timeout or PBF */ 151#define L2CAP_MIN_MONITOR_TOUT 12000 /* Min monitor timeout if no flush timeout or PBF */ 152 153#define L2CAP_MAX_FCR_CFG_TRIES 2 /* Config attempts before disconnecting */ 154 155/* Only compiled in when in test mode. Production devices must not include 156*/ 157#if L2CAP_CORRUPT_ERTM_PKTS == TRUE 158 159/* These are used for conformance and corruption testing only */ 160typedef struct 161{ 162 BOOLEAN in_use; /* TRUE if test in progress */ 163 UINT8 type; /* Type of test to run or turns off random test */ 164 UINT8 freq; /* One-shot or random */ 165 BOOLEAN is_rx; /* TRUE if incoming packets */ 166 UINT16 count; /* How many I-frames to drop in a row; used only with one-shot tests */ 167} tL2C_FCR_TEST_CFG; 168 169typedef struct 170{ 171 BOOLEAN in_use; /* TRUE if test in progress */ 172 UINT8 skip_sframe_count; /* Number of S-Frames to skip sending */ 173} tL2C_FCR_CFM_TEST_CB; 174 175typedef struct 176{ 177 tL2C_FCR_TEST_CFG cfg; /* Current corruption test configuration */ 178 tL2C_FCR_CFM_TEST_CB cfm; /* Conformance test structure */ 179} tL2C_FCR_TEST_CB; 180 181#endif /* L2CAP_CORRUPT_ERTM_PKTS == TRUE */ 182 183typedef struct 184{ 185 UINT8 next_tx_seq; /* Next sequence number to be Tx'ed */ 186 UINT8 last_rx_ack; /* Last sequence number ack'ed by the peer */ 187 UINT8 next_seq_expected; /* Next peer sequence number expected */ 188 UINT8 last_ack_sent; /* Last peer sequence number ack'ed */ 189 UINT8 num_tries; /* Number of retries to send a packet */ 190 UINT8 max_held_acks; /* Max acks we can hold before sending */ 191 192 BOOLEAN remote_busy; /* TRUE if peer has flowed us off */ 193 BOOLEAN local_busy; /* TRUE if we have flowed off the peer */ 194 195 BOOLEAN rej_sent; /* Reject was sent */ 196 BOOLEAN srej_sent; /* Selective Reject was sent */ 197 BOOLEAN wait_ack; /* Transmitter is waiting ack (poll sent) */ 198 BOOLEAN rej_after_srej; /* Send a REJ when SREJ clears */ 199 200 BOOLEAN send_f_rsp; /* We need to send an F-bit response */ 201 202 UINT16 rx_sdu_len; /* Length of the SDU being received */ 203 BT_HDR *p_rx_sdu; /* Buffer holding the SDU being received */ 204 BUFFER_Q waiting_for_ack_q; /* Buffers sent and waiting for peer to ack */ 205 BUFFER_Q srej_rcv_hold_q; /* Buffers rcvd but held pending SREJ rsp */ 206 BUFFER_Q retrans_q; /* Buffers being retransmitted */ 207 208 TIMER_LIST_ENT ack_timer; /* Timer delaying RR */ 209 TIMER_LIST_ENT mon_retrans_timer; /* Timer Monitor or Retransmission */ 210 211#if (L2CAP_ERTM_STATS == TRUE) 212 UINT32 connect_tick_count; /* Time channel was established */ 213 UINT32 ertm_pkt_counts[2]; /* Packets sent and received */ 214 UINT32 ertm_byte_counts[2]; /* Bytes sent and received */ 215 UINT32 s_frames_sent[4]; /* S-frames sent (RR, REJ, RNR, SREJ) */ 216 UINT32 s_frames_rcvd[4]; /* S-frames rcvd (RR, REJ, RNR, SREJ) */ 217 UINT32 xmit_window_closed; /* # of times the xmit window was closed */ 218 UINT32 controller_idle; /* # of times less than 2 packets in controller */ 219 /* when the xmit window was closed */ 220 UINT32 pkts_retransmitted; /* # of packets that were retransmitted */ 221 UINT32 retrans_touts; /* # of retransmission timouts */ 222 UINT32 xmit_ack_touts; /* # of xmit ack timouts */ 223 224#define L2CAP_ERTM_STATS_NUM_AVG 10 225#define L2CAP_ERTM_STATS_AVG_NUM_SAMPLES 100 226 UINT32 ack_delay_avg_count; 227 UINT32 ack_delay_avg_index; 228 UINT32 throughput_start; 229 UINT32 throughput[L2CAP_ERTM_STATS_NUM_AVG]; 230 UINT32 ack_delay_avg[L2CAP_ERTM_STATS_NUM_AVG]; 231 UINT32 ack_delay_min[L2CAP_ERTM_STATS_NUM_AVG]; 232 UINT32 ack_delay_max[L2CAP_ERTM_STATS_NUM_AVG]; 233 UINT32 ack_q_count_avg[L2CAP_ERTM_STATS_NUM_AVG]; 234 UINT32 ack_q_count_min[L2CAP_ERTM_STATS_NUM_AVG]; 235 UINT32 ack_q_count_max[L2CAP_ERTM_STATS_NUM_AVG]; 236#endif 237 238#if L2CAP_CORRUPT_ERTM_PKTS == TRUE 239 tL2C_FCR_TEST_CB test_cb; /* Used for SVT and UPF testing */ 240#endif 241 242} tL2C_FCRB; 243 244 245/* Define a registration control block. Every application (e.g. RFCOMM, SDP, 246** TCS etc) that registers with L2CAP is assigned one of these. 247*/ 248#if (L2CAP_UCD_INCLUDED == TRUE) 249#define L2C_UCD_RCB_ID 0x00 250#define L2C_UCD_STATE_UNUSED 0x00 251#define L2C_UCD_STATE_W4_DATA 0x01 252#define L2C_UCD_STATE_W4_RECEPTION 0x02 253#define L2C_UCD_STATE_W4_MTU 0x04 254 255typedef struct 256{ 257 UINT8 state; 258 tL2CAP_UCD_CB_INFO cb_info; 259} tL2C_UCD_REG; 260#endif 261 262typedef struct 263{ 264 BOOLEAN in_use; 265 UINT16 psm; 266 UINT16 real_psm; /* This may be a dummy RCB for an o/b connection but */ 267 /* this is the real PSM that we need to connect to */ 268#if (L2CAP_UCD_INCLUDED == TRUE) 269 tL2C_UCD_REG ucd; 270#endif 271 272 tL2CAP_APPL_INFO api; 273} tL2C_RCB; 274 275 276/* Define a channel control block (CCB). There may be many channel control blocks 277** between the same two Bluetooth devices (i.e. on the same link). 278** Each CCB has unique local and remote CIDs. All channel control blocks on 279** the same physical link and are chained together. 280*/ 281typedef struct t_l2c_ccb 282{ 283 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 284 tL2C_CHNL_STATE chnl_state; /* Channel state */ 285 286 struct t_l2c_ccb *p_next_ccb; /* Next CCB in the chain */ 287 struct t_l2c_ccb *p_prev_ccb; /* Previous CCB in the chain */ 288 struct t_l2c_linkcb *p_lcb; /* Link this CCB is assigned to */ 289 290 UINT16 local_cid; /* Local CID */ 291 UINT16 remote_cid; /* Remote CID */ 292 293 TIMER_LIST_ENT timer_entry; /* CCB Timer List Entry */ 294 295 tL2C_RCB *p_rcb; /* Registration CB for this Channel */ 296 297#define IB_CFG_DONE 0x01 298#define OB_CFG_DONE 0x02 299#define RECONFIG_FLAG 0x04 /* True after initial configuration */ 300#define CFG_DONE_MASK (IB_CFG_DONE | OB_CFG_DONE) 301 302 UINT8 config_done; /* Configuration flag word */ 303 UINT8 local_id; /* Transaction ID for local trans */ 304 UINT8 remote_id; /* Transaction ID for local */ 305 306#define CCB_FLAG_NO_RETRY 0x01 /* no more retry */ 307#define CCB_FLAG_SENT_PENDING 0x02 /* already sent pending response */ 308 UINT8 flags; 309 310 tL2CAP_CFG_INFO our_cfg; /* Our saved configuration options */ 311 tL2CAP_CH_CFG_BITS peer_cfg_bits; /* Store what peer wants to configure */ 312 tL2CAP_CFG_INFO peer_cfg; /* Peer's saved configuration options */ 313 314 BUFFER_Q xmit_hold_q; /* Transmit data hold queue */ 315 316 BOOLEAN cong_sent; /* Set when congested status sent */ 317 UINT16 buff_quota; /* Buffer quota before sending congestion */ 318 319 tL2CAP_CHNL_PRIORITY ccb_priority; /* Channel priority */ 320 tL2CAP_CHNL_DATA_RATE tx_data_rate; /* Channel Tx data rate */ 321 tL2CAP_CHNL_DATA_RATE rx_data_rate; /* Channel Rx data rate */ 322 323 /* Fields used for eL2CAP */ 324 tL2CAP_ERTM_INFO ertm_info; 325 tL2C_FCRB fcrb; 326 UINT16 tx_mps; /* TX MPS adjusted based on current controller */ 327 UINT16 max_rx_mtu; 328 UINT8 fcr_cfg_tries; /* Max number of negotiation attempts */ 329 BOOLEAN peer_cfg_already_rejected; /* If mode rejected once, set to TRUE */ 330 BOOLEAN out_cfg_fcr_present; /* TRUE if cfg response shoulkd include fcr options */ 331 332#define L2CAP_CFG_FCS_OUR 0x01 /* Our desired config FCS option */ 333#define L2CAP_CFG_FCS_PEER 0x02 /* Peer's desired config FCS option */ 334#define L2CAP_BYPASS_FCS (L2CAP_CFG_FCS_OUR | L2CAP_CFG_FCS_PEER) 335 UINT8 bypass_fcs; 336 337#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 338 BOOLEAN is_flushable; /* TRUE if channel is flushable */ 339#endif 340 341#if (L2CAP_NUM_FIXED_CHNLS > 0) || (L2CAP_UCD_INCLUDED == TRUE) 342 UINT16 fixed_chnl_idle_tout; /* Idle timeout to use for the fixed channel */ 343#endif 344 345} tL2C_CCB; 346 347/*********************************************************************** 348** Define a queue of linked CCBs. 349*/ 350typedef struct 351{ 352 tL2C_CCB *p_first_ccb; /* The first channel in this queue */ 353 tL2C_CCB *p_last_ccb; /* The last channel in this queue */ 354} tL2C_CCB_Q; 355 356#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 357 358/* Round-Robin service for the same priority channels */ 359#define L2CAP_NUM_CHNL_PRIORITY 3 /* Total number of priority group (high, medium, low)*/ 360#define L2CAP_CHNL_PRIORITY_WEIGHT 5 /* weight per priority for burst transmission quota */ 361#define L2CAP_GET_PRIORITY_QUOTA(pri) ((L2CAP_NUM_CHNL_PRIORITY - (pri)) * L2CAP_CHNL_PRIORITY_WEIGHT) 362 363/* CCBs within the same LCB are served in round robin with priority */ 364/* It will make sure that low priority channel (for example, HF signaling on RFCOMM) */ 365/* can be sent to headset even if higher priority channel (for example, AV media channel) */ 366/* is congested. */ 367 368typedef struct 369{ 370 tL2C_CCB *p_serve_ccb; /* current serving ccb within priority group */ 371 tL2C_CCB *p_first_ccb; /* first ccb of priority group */ 372 UINT8 num_ccb; /* number of channels in priority group */ 373 UINT8 quota; /* burst transmission quota */ 374} tL2C_RR_SERV; 375 376#endif /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */ 377 378/* Define a link control block. There is one link control block between 379** this device and any other device (i.e. BD ADDR). 380*/ 381typedef struct t_l2c_linkcb 382{ 383 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 384 tL2C_LINK_STATE link_state; 385 386 TIMER_LIST_ENT timer_entry; /* Timer list entry for timeout evt */ 387 UINT16 handle; /* The handle used with LM */ 388 389 tL2C_CCB_Q ccb_queue; /* Queue of CCBs on this LCB */ 390 391 tL2C_CCB *p_pending_ccb; /* ccb of waiting channel during link disconnect */ 392 TIMER_LIST_ENT info_timer_entry; /* Timer entry for info resp timeout evt */ 393 BD_ADDR remote_bd_addr; /* The BD address of the remote */ 394 395 UINT8 link_role; /* Master or slave */ 396 UINT8 id; 397 UINT8 cur_echo_id; /* Current id value for echo request */ 398 tL2CA_ECHO_RSP_CB *p_echo_rsp_cb; /* Echo response callback */ 399 UINT16 idle_timeout; /* Idle timeout */ 400 BOOLEAN is_bonding; /* True - link active only for bonding */ 401 402 UINT16 link_flush_tout; /* Flush timeout used */ 403 404 UINT16 link_xmit_quota; /* Num outstanding pkts allowed */ 405 UINT16 sent_not_acked; /* Num packets sent but not acked */ 406 407 BOOLEAN partial_segment_being_sent; /* Set TRUE when a partial segment */ 408 /* is being sent. */ 409 BOOLEAN w4_info_rsp; /* TRUE when info request is active */ 410 UINT8 info_rx_bits; /* set 1 if received info type */ 411 UINT32 peer_ext_fea; /* Peer's extended features mask */ 412 BUFFER_Q link_xmit_data_q; /* Transmit data buffer queue */ 413 414 UINT8 peer_chnl_mask[L2CAP_FIXED_CHNL_ARRAY_SIZE]; 415#if (L2CAP_UCD_INCLUDED == TRUE) 416 UINT16 ucd_mtu; /* peer MTU on UCD */ 417 BUFFER_Q ucd_out_sec_pending_q; /* Security pending outgoing UCD packet */ 418 BUFFER_Q ucd_in_sec_pending_q; /* Security pending incoming UCD packet */ 419#endif 420 421#if (L2CAP_HOST_FLOW_CTRL == TRUE) 422 UINT16 link_pkts_unacked; /* Packets received but not acked */ 423 UINT16 link_ack_thresh; /* Threshold at which to ack pkts */ 424#endif 425 426 BT_HDR *p_hcit_rcv_acl; /* Current HCIT ACL buf being rcvd */ 427 UINT16 idle_timeout_sv; /* Save current Idle timeout */ 428 UINT8 acl_priority; /* L2C_PRIORITY_NORMAL or L2C_PRIORITY_HIGH */ 429 tL2CA_NOCP_CB *p_nocp_cb; /* Num Cmpl pkts callback */ 430 431#if (L2CAP_NUM_FIXED_CHNLS > 0) 432 tL2C_CCB *p_fixed_ccbs[L2CAP_NUM_FIXED_CHNLS]; 433 UINT16 disc_reason; 434#endif 435 436 tBT_TRANSPORT transport; 437#if (BLE_INCLUDED == TRUE) 438 tBLE_ADDR_TYPE ble_addr_type; 439 440#define L2C_BLE_CONN_UPDATE_DISABLE 0x1 /* disable update connection parameters */ 441#define L2C_BLE_NEW_CONN_PARAM 0x2 /* new connection parameter to be set */ 442#define L2C_BLE_UPDATE_PENDING 0x4 /* waiting for connection update finished */ 443#define L2C_BLE_NOT_DEFAULT_PARAM 0x8 /* not using default connection parameters */ 444 UINT8 conn_update_mask; 445 446 UINT16 min_interval; /* parameters as requested by peripheral */ 447 UINT16 max_interval; 448 UINT16 latency; 449 UINT16 timeout; 450 451#endif 452 453#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 454 /* each priority group is limited burst transmission */ 455 /* round robin service for the same priority channels */ 456 tL2C_RR_SERV rr_serv[L2CAP_NUM_CHNL_PRIORITY]; 457 UINT8 rr_pri; /* current serving priority group */ 458#endif 459 460} tL2C_LCB; 461 462/* Define the L2CAP control structure 463*/ 464typedef struct 465{ 466 UINT8 l2cap_trace_level; 467 UINT16 controller_xmit_window; /* Total ACL window for all links */ 468 469 UINT16 round_robin_quota; /* Round-robin link quota */ 470 UINT16 round_robin_unacked; /* Round-robin unacked */ 471 BOOLEAN check_round_robin; /* Do a round robin check */ 472 473 BOOLEAN is_cong_cback_context; 474 475 tL2C_LCB lcb_pool[MAX_L2CAP_LINKS]; /* Link Control Block pool */ 476 tL2C_CCB ccb_pool[MAX_L2CAP_CHANNELS]; /* Channel Control Block pool */ 477 tL2C_RCB rcb_pool[MAX_L2CAP_CLIENTS]; /* Registration info pool */ 478 479 tL2C_CCB *p_free_ccb_first; /* Pointer to first free CCB */ 480 tL2C_CCB *p_free_ccb_last; /* Pointer to last free CCB */ 481 482 UINT8 desire_role; /* desire to be master/slave when accepting a connection */ 483 BOOLEAN disallow_switch; /* FALSE, to allow switch at create conn */ 484 UINT16 num_lm_acl_bufs; /* # of ACL buffers on controller */ 485 UINT16 idle_timeout; /* Idle timeout */ 486 487 BUFFER_Q rcv_hold_q; /* Recv pending queue */ 488 TIMER_LIST_ENT rcv_hold_tle; /* Timer list entry for rcv hold */ 489 490 tL2C_LCB *p_cur_hcit_lcb; /* Current HCI Transport buffer */ 491 UINT16 num_links_active; /* Number of links active */ 492 493#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 494 UINT16 non_flushable_pbf; /* L2CAP_PKT_START_NON_FLUSHABLE if controller supports */ 495 /* Otherwise, L2CAP_PKT_START */ 496 BOOLEAN is_flush_active; /* TRUE if an HCI_Enhanced_Flush has been sent */ 497#endif 498 499#if L2CAP_CONFORMANCE_TESTING == TRUE 500 UINT32 test_info_resp; /* Conformance testing needs a dynamic response */ 501#endif 502 503#if (L2CAP_NUM_FIXED_CHNLS > 0) 504 tL2CAP_FIXED_CHNL_REG fixed_reg[L2CAP_NUM_FIXED_CHNLS]; /* Reg info for fixed channels */ 505#endif 506 507#if (BLE_INCLUDED == TRUE) 508 UINT16 num_ble_links_active; /* Number of LE links active */ 509 BOOLEAN is_ble_connecting; 510 BD_ADDR ble_connecting_bda; 511 UINT16 controller_le_xmit_window; /* Total ACL window for all links */ 512 UINT16 num_lm_ble_bufs; /* # of ACL buffers on controller */ 513 UINT16 ble_round_robin_quota; /* Round-robin link quota */ 514 UINT16 ble_round_robin_unacked; /* Round-robin unacked */ 515 BOOLEAN ble_check_round_robin; /* Do a round robin check */ 516#endif 517 518 tL2CA_ECHO_DATA_CB *p_echo_data_cb; /* Echo data callback */ 519 520#if (defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) && (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE)) 521 UINT16 high_pri_min_xmit_quota; /* Minimum number of ACL credit for high priority link */ 522#endif /* (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) */ 523 524 UINT16 dyn_psm; 525} tL2C_CB; 526 527 528 529/* Define a structure that contains the information about a connection. 530** This structure is used to pass between functions, and not all the 531** fields will always be filled in. 532*/ 533typedef struct 534{ 535 BD_ADDR bd_addr; /* Remote BD address */ 536 UINT8 status; /* Connection status */ 537 UINT16 psm; /* PSM of the connection */ 538 UINT16 l2cap_result; /* L2CAP result */ 539 UINT16 l2cap_status; /* L2CAP status */ 540 UINT16 remote_cid; /* Remote CID */ 541} tL2C_CONN_INFO; 542 543 544typedef void (tL2C_FCR_MGMT_EVT_HDLR) (UINT8, tL2C_CCB *); 545 546/* The offset in a buffer that L2CAP will use when building commands. 547*/ 548#define L2CAP_SEND_CMD_OFFSET 0 549 550 551/* Number of ACL buffers to use for high priority channel 552*/ 553#if (!defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) || (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == FALSE)) 554#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (L2CAP_HIGH_PRI_MIN_XMIT_QUOTA) 555#else 556#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (l2cb.high_pri_min_xmit_quota) 557#endif 558 559#ifdef __cplusplus 560extern "C" { 561#endif 562 563 564/* L2CAP global data 565************************************ 566*/ 567#if (!defined L2C_DYNAMIC_MEMORY) || (L2C_DYNAMIC_MEMORY == FALSE) 568L2C_API extern tL2C_CB l2cb; 569#else 570L2C_API extern tL2C_CB *l2c_cb_ptr; 571#define l2cb (*l2c_cb_ptr) 572#endif 573 574 575/* Functions provided by l2c_main.c 576************************************ 577*/ 578extern void l2c_init (void); 579extern void l2c_process_timeout (TIMER_LIST_ENT *p_tle); 580extern UINT8 l2c_data_write (UINT16 cid, BT_HDR *p_data, UINT16 flag); 581extern void l2c_rcv_acl_data (BT_HDR *p_msg); 582extern void l2c_process_held_packets (BOOLEAN timed_out); 583 584/* Functions provided by l2c_utils.c 585************************************ 586*/ 587extern tL2C_LCB *l2cu_allocate_lcb (BD_ADDR p_bd_addr, BOOLEAN is_bonding, tBT_TRANSPORT transport); 588extern BOOLEAN l2cu_start_post_bond_timer (UINT16 handle); 589extern void l2cu_release_lcb (tL2C_LCB *p_lcb); 590extern tL2C_LCB *l2cu_find_lcb_by_bd_addr (BD_ADDR p_bd_addr, tBT_TRANSPORT transport); 591extern tL2C_LCB *l2cu_find_lcb_by_handle (UINT16 handle); 592extern void l2cu_update_lcb_4_bonding (BD_ADDR p_bd_addr, BOOLEAN is_bonding); 593 594extern UINT8 l2cu_get_conn_role (tL2C_LCB *p_this_lcb); 595extern BOOLEAN l2cu_set_acl_priority (BD_ADDR bd_addr, UINT8 priority, BOOLEAN reset_after_rs); 596 597extern void l2cu_enqueue_ccb (tL2C_CCB *p_ccb); 598extern void l2cu_dequeue_ccb (tL2C_CCB *p_ccb); 599extern void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY priority); 600 601extern tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid); 602extern void l2cu_release_ccb (tL2C_CCB *p_ccb); 603extern tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid); 604extern tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid); 605extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask); 606extern BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb); 607 608extern void l2cu_send_peer_cmd_reject (tL2C_LCB *p_lcb, UINT16 reason, 609 UINT8 rem_id,UINT16 p1, UINT16 p2); 610extern void l2cu_send_peer_connect_req (tL2C_CCB *p_ccb); 611extern void l2cu_send_peer_connect_rsp (tL2C_CCB *p_ccb, UINT16 result, UINT16 status); 612extern void l2cu_send_peer_config_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 613extern void l2cu_send_peer_config_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 614extern void l2cu_send_peer_config_rej (tL2C_CCB *p_ccb, UINT8 *p_data, UINT16 data_len, UINT16 rej_len); 615extern void l2cu_send_peer_disc_req (tL2C_CCB *p_ccb); 616extern void l2cu_send_peer_disc_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 local_cid, UINT16 remote_cid); 617extern void l2cu_send_peer_echo_req (tL2C_LCB *p_lcb, UINT8 *p_data, UINT16 data_len); 618extern void l2cu_send_peer_echo_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 619extern void l2cu_send_peer_info_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT16 info_type); 620extern void l2cu_reject_connection (tL2C_LCB *p_lcb, UINT16 remote_cid, UINT8 rem_id, UINT16 result); 621extern void l2cu_send_peer_info_req (tL2C_LCB *p_lcb, UINT16 info_type); 622extern void l2cu_set_acl_hci_header (BT_HDR *p_buf, tL2C_CCB *p_ccb); 623extern void l2cu_check_channel_congestion (tL2C_CCB *p_ccb); 624extern void l2cu_disconnect_chnl (tL2C_CCB *p_ccb); 625 626#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 627extern void l2cu_set_non_flushable_pbf(BOOLEAN); 628#endif 629 630#if (BLE_INCLUDED == TRUE) 631extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); 632extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); 633#endif 634 635extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); 636extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); 637extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); 638 639/* Functions provided by l2c_ucd.c 640************************************ 641*/ 642#if (L2CAP_UCD_INCLUDED == TRUE) 643void l2c_ucd_delete_sec_pending_q(tL2C_LCB *p_lcb); 644void l2c_ucd_enqueue_pending_out_sec_q(tL2C_CCB *p_ccb, void *p_data); 645BOOLEAN l2c_ucd_check_pending_info_req(tL2C_CCB *p_ccb); 646BOOLEAN l2c_ucd_check_pending_out_sec_q(tL2C_CCB *p_ccb); 647void l2c_ucd_send_pending_out_sec_q(tL2C_CCB *p_ccb); 648void l2c_ucd_discard_pending_out_sec_q(tL2C_CCB *p_ccb); 649BOOLEAN l2c_ucd_check_pending_in_sec_q(tL2C_CCB *p_ccb); 650void l2c_ucd_send_pending_in_sec_q(tL2C_CCB *p_ccb); 651void l2c_ucd_discard_pending_in_sec_q(tL2C_CCB *p_ccb); 652BOOLEAN l2c_ucd_check_rx_pkts(tL2C_LCB *p_lcb, BT_HDR *p_msg); 653BOOLEAN l2c_ucd_process_event(tL2C_CCB *p_ccb, UINT16 event, void *p_data); 654#endif 655 656#if (BLE_INCLUDED == TRUE) 657extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); 658extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); 659#endif 660 661extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); 662extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); 663extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); 664 665 666/* Functions provided for Broadcom Aware 667**************************************** 668*/ 669extern BOOLEAN l2cu_check_feature_req (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 670extern void l2cu_check_feature_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 671extern void l2cu_send_feature_req (tL2C_CCB *p_ccb); 672 673extern tL2C_RCB *l2cu_allocate_rcb (UINT16 psm); 674extern tL2C_RCB *l2cu_find_rcb_by_psm (UINT16 psm); 675extern void l2cu_release_rcb (tL2C_RCB *p_rcb); 676 677extern UINT8 l2cu_process_peer_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 678extern void l2cu_process_peer_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 679extern void l2cu_process_our_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 680extern void l2cu_process_our_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 681 682extern void l2cu_device_reset (void); 683extern tL2C_LCB *l2cu_find_lcb_by_state (tL2C_LINK_STATE state); 684extern BOOLEAN l2cu_lcb_disconnecting (void); 685 686extern BOOLEAN l2cu_create_conn (tL2C_LCB *p_lcb, tBT_TRANSPORT transport); 687extern BOOLEAN l2cu_create_conn_after_switch (tL2C_LCB *p_lcb); 688extern BT_HDR *l2cu_get_next_buffer_to_send (tL2C_LCB *p_lcb); 689extern void l2cu_resubmit_pending_sec_req (BD_ADDR p_bda); 690extern void l2cu_initialize_amp_ccb (tL2C_LCB *p_lcb); 691extern void l2cu_adjust_out_mps (tL2C_CCB *p_ccb); 692 693/* Functions provided by l2c_link.c 694************************************ 695*/ 696extern BOOLEAN l2c_link_hci_conn_req (BD_ADDR bd_addr); 697extern BOOLEAN l2c_link_hci_conn_comp (UINT8 status, UINT16 handle, BD_ADDR p_bda); 698extern BOOLEAN l2c_link_hci_disc_comp (UINT16 handle, UINT8 reason); 699extern BOOLEAN l2c_link_hci_qos_violation (UINT16 handle); 700extern void l2c_link_timeout (tL2C_LCB *p_lcb); 701extern void l2c_info_timeout (tL2C_LCB *p_lcb); 702extern void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf); 703extern void l2c_link_adjust_allocation (void); 704extern void l2c_link_process_num_completed_pkts (UINT8 *p); 705extern void l2c_link_process_num_completed_blocks (UINT8 controller_id, UINT8 *p, UINT16 evt_len); 706extern void l2c_link_processs_num_bufs (UINT16 num_lm_acl_bufs); 707extern UINT8 l2c_link_pkts_rcvd (UINT16 *num_pkts, UINT16 *handles); 708extern void l2c_link_role_changed (BD_ADDR bd_addr, UINT8 new_role, UINT8 hci_status); 709extern void l2c_link_sec_comp (BD_ADDR p_bda, tBT_TRANSPORT trasnport, void *p_ref_data, UINT8 status); 710extern void l2c_link_segments_xmitted (BT_HDR *p_msg); 711extern void l2c_pin_code_request (BD_ADDR bd_addr); 712extern void l2c_link_adjust_chnl_allocation (void); 713 714#if (BLE_INCLUDED == TRUE) 715extern void l2c_link_processs_ble_num_bufs (UINT16 num_lm_acl_bufs); 716#endif 717 718#if ((BTM_PWR_MGR_INCLUDED == TRUE) && L2CAP_WAKE_PARKED_LINK == TRUE) 719extern BOOLEAN l2c_link_check_power_mode ( tL2C_LCB *p_lcb ); 720#define L2C_LINK_CHECK_POWER_MODE(x) l2c_link_check_power_mode ((x)) 721#else 722#define L2C_LINK_CHECK_POWER_MODE(x) (FALSE) 723#endif 724 725#if L2CAP_CONFORMANCE_TESTING == TRUE 726/* Used only for conformance testing */ 727L2C_API extern void l2cu_set_info_rsp_mask (UINT32 mask); 728#endif 729 730/* Functions provided by l2c_csm.c 731************************************ 732*/ 733extern void l2c_csm_execute (tL2C_CCB *p_ccb, UINT16 event, void *p_data); 734 735L2C_API extern BT_HDR *l2cap_link_chk_pkt_start(BT_HDR *); /* Called at start of rcv to check L2CAP segmentation */ 736L2C_API extern BOOLEAN l2cap_link_chk_pkt_end (void); /* Called at end of rcv to check L2CAP segmentation */ 737 738L2C_API extern void l2c_enqueue_peer_data (tL2C_CCB *p_ccb, BT_HDR *p_buf); 739 740 741/* Functions provided by l2c_fcr.c 742************************************ 743*/ 744extern void l2c_fcr_cleanup (tL2C_CCB *p_ccb); 745extern void l2c_fcr_proc_pdu (tL2C_CCB *p_ccb, BT_HDR *p_buf); 746extern void l2c_fcr_proc_tout (tL2C_CCB *p_ccb); 747extern void l2c_fcr_proc_ack_tout (tL2C_CCB *p_ccb); 748extern void l2c_fcr_send_S_frame (tL2C_CCB *p_ccb, UINT16 function_code, UINT16 pf_bit); 749extern BT_HDR *l2c_fcr_clone_buf (BT_HDR *p_buf, UINT16 new_offset, UINT16 no_of_bytes, UINT8 pool); 750extern BOOLEAN l2c_fcr_is_flow_controlled (tL2C_CCB *p_ccb); 751extern BT_HDR *l2c_fcr_get_next_xmit_sdu_seg (tL2C_CCB *p_ccb, UINT16 max_packet_length); 752extern void l2c_fcr_start_timer (tL2C_CCB *p_ccb); 753 754/* Configuration negotiation */ 755extern UINT8 l2c_fcr_chk_chan_modes (tL2C_CCB *p_ccb); 756extern BOOLEAN l2c_fcr_adj_our_req_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 757extern void l2c_fcr_adj_our_rsp_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_peer_cfg); 758extern BOOLEAN l2c_fcr_renegotiate_chan(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 759extern UINT8 l2c_fcr_process_peer_cfg_req(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 760extern void l2c_fcr_adj_monitor_retran_timeout (tL2C_CCB *p_ccb); 761extern void l2c_fcr_stop_timer (tL2C_CCB *p_ccb); 762 763/* Functions provided by l2c_ble.c 764************************************ 765*/ 766#if (BLE_INCLUDED == TRUE) 767extern BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb); 768extern void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len); 769extern void l2cble_conn_comp (UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type, 770 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout); 771extern BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb); 772extern void l2cble_notify_le_connection (BD_ADDR bda); 773extern void l2c_ble_link_adjust_allocation (void); 774extern void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status); 775 776#if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) 777extern void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max, 778 UINT16 latency, UINT16 timeout); 779#endif 780#endif 781extern void l2cu_process_fixed_disc_cback (tL2C_LCB *p_lcb); 782 783#ifdef __cplusplus 784} 785#endif 786 787#endif 788