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 <stdbool.h> 28 29 #include "btm_api.h" 30 #include "gki.h" 31 #include "l2c_api.h" 32 #include "l2cdefs.h" 33 #include "list.h" 34 35 #define L2CAP_MIN_MTU 48 /* Minimum acceptable MTU is 48 bytes */ 36 37 /* Timeouts. Since L2CAP works off a 1-second list, all are in seconds. 38 */ 39 #define L2CAP_LINK_ROLE_SWITCH_TOUT 10 /* 10 seconds */ 40 #define L2CAP_LINK_CONNECT_TOUT 60 /* 30 seconds */ 41 #define L2CAP_LINK_CONNECT_TOUT_EXT 120 /* 120 seconds */ 42 #define L2CAP_ECHO_RSP_TOUT 30 /* 30 seconds */ 43 #define L2CAP_LINK_FLOW_CONTROL_TOUT 2 /* 2 seconds */ 44 #define L2CAP_LINK_DISCONNECT_TOUT 30 /* 30 seconds */ 45 46 #ifndef L2CAP_CHNL_CONNECT_TOUT /* BTIF needs to override for internal project needs */ 47 #define L2CAP_CHNL_CONNECT_TOUT 60 /* 60 seconds */ 48 #endif 49 50 #define L2CAP_CHNL_CONNECT_TOUT_EXT 120 /* 120 seconds */ 51 #define L2CAP_CHNL_CFG_TIMEOUT 30 /* 30 seconds */ 52 #define L2CAP_CHNL_DISCONNECT_TOUT 10 /* 10 seconds */ 53 #define L2CAP_DELAY_CHECK_SM4 2 /* 2 seconds */ 54 #define L2CAP_WAIT_INFO_RSP_TOUT 3 /* 3 seconds */ 55 #define L2CAP_WAIT_UNPARK_TOUT 2 /* 2 seconds */ 56 #define L2CAP_LINK_INFO_RESP_TOUT 2 /* 2 seconds */ 57 #define L2CAP_BLE_LINK_CONNECT_TOUT 30 /* 30 seconds */ 58 #define L2CAP_BLE_CONN_PARAM_UPD_TOUT 30 /* 30 seconds */ 59 60 /* quick timer uses millisecond unit */ 61 #define L2CAP_DEFAULT_RETRANS_TOUT 2000 /* 2000 milliseconds */ 62 #define L2CAP_DEFAULT_MONITOR_TOUT 12000 /* 12000 milliseconds */ 63 #define L2CAP_FCR_ACK_TOUT 200 /* 200 milliseconds */ 64 65 /* Define the possible L2CAP channel states. The names of 66 ** the states may seem a bit strange, but they are taken from 67 ** the Bluetooth specification. 68 */ 69 typedef enum 70 { 71 CST_CLOSED, /* Channel is in clodes state */ 72 CST_ORIG_W4_SEC_COMP, /* Originator waits security clearence */ 73 CST_TERM_W4_SEC_COMP, /* Acceptor waits security clearence */ 74 CST_W4_L2CAP_CONNECT_RSP, /* Waiting for peer conenct response */ 75 CST_W4_L2CA_CONNECT_RSP, /* Waiting for upper layer connect rsp */ 76 CST_CONFIG, /* Negotiating configuration */ 77 CST_OPEN, /* Data transfer state */ 78 CST_W4_L2CAP_DISCONNECT_RSP, /* Waiting for peer disconnect rsp */ 79 CST_W4_L2CA_DISCONNECT_RSP /* Waiting for upper layer disc rsp */ 80 } tL2C_CHNL_STATE; 81 82 /* Define the possible L2CAP link states 83 */ 84 typedef enum 85 { 86 LST_DISCONNECTED, 87 LST_CONNECT_HOLDING, 88 LST_CONNECTING_WAIT_SWITCH, 89 LST_CONNECTING, 90 LST_CONNECTED, 91 LST_DISCONNECTING 92 } tL2C_LINK_STATE; 93 94 95 96 /* Define input events to the L2CAP link and channel state machines. The names 97 ** of the events may seem a bit strange, but they are taken from 98 ** the Bluetooth specification. 99 */ 100 #define L2CEVT_LP_CONNECT_CFM 0 /* Lower layer connect confirm */ 101 #define L2CEVT_LP_CONNECT_CFM_NEG 1 /* Lower layer connect confirm (failed) */ 102 #define L2CEVT_LP_CONNECT_IND 2 /* Lower layer connect indication */ 103 #define L2CEVT_LP_DISCONNECT_IND 3 /* Lower layer disconnect indication */ 104 #define L2CEVT_LP_QOS_CFM 4 /* Lower layer QOS confirmation */ 105 #define L2CEVT_LP_QOS_CFM_NEG 5 /* Lower layer QOS confirmation (failed)*/ 106 #define L2CEVT_LP_QOS_VIOLATION_IND 6 /* Lower layer QOS violation indication */ 107 108 #define L2CEVT_SEC_COMP 7 /* Security cleared successfully */ 109 #define L2CEVT_SEC_COMP_NEG 8 /* Security procedure failed */ 110 111 #define L2CEVT_L2CAP_CONNECT_REQ 10 /* Peer connection request */ 112 #define L2CEVT_L2CAP_CONNECT_RSP 11 /* Peer connection response */ 113 #define L2CEVT_L2CAP_CONNECT_RSP_PND 12 /* Peer connection response pending */ 114 #define L2CEVT_L2CAP_CONNECT_RSP_NEG 13 /* Peer connection response (failed) */ 115 #define L2CEVT_L2CAP_CONFIG_REQ 14 /* Peer configuration request */ 116 #define L2CEVT_L2CAP_CONFIG_RSP 15 /* Peer configuration response */ 117 #define L2CEVT_L2CAP_CONFIG_RSP_NEG 16 /* Peer configuration response (failed) */ 118 #define L2CEVT_L2CAP_DISCONNECT_REQ 17 /* Peer disconnect request */ 119 #define L2CEVT_L2CAP_DISCONNECT_RSP 18 /* Peer disconnect response */ 120 #define L2CEVT_L2CAP_INFO_RSP 19 /* Peer information response */ 121 #define L2CEVT_L2CAP_DATA 20 /* Peer data */ 122 123 #define L2CEVT_L2CA_CONNECT_REQ 21 /* Upper layer connect request */ 124 #define L2CEVT_L2CA_CONNECT_RSP 22 /* Upper layer connect response */ 125 #define L2CEVT_L2CA_CONNECT_RSP_NEG 23 /* Upper layer connect response (failed)*/ 126 #define L2CEVT_L2CA_CONFIG_REQ 24 /* Upper layer config request */ 127 #define L2CEVT_L2CA_CONFIG_RSP 25 /* Upper layer config response */ 128 #define L2CEVT_L2CA_CONFIG_RSP_NEG 26 /* Upper layer config response (failed) */ 129 #define L2CEVT_L2CA_DISCONNECT_REQ 27 /* Upper layer disconnect request */ 130 #define L2CEVT_L2CA_DISCONNECT_RSP 28 /* Upper layer disconnect response */ 131 #define L2CEVT_L2CA_DATA_READ 29 /* Upper layer data read */ 132 #define L2CEVT_L2CA_DATA_WRITE 30 /* Upper layer data write */ 133 #define L2CEVT_L2CA_FLUSH_REQ 31 /* Upper layer flush */ 134 135 #define L2CEVT_TIMEOUT 32 /* Timeout */ 136 #define L2CEVT_SEC_RE_SEND_CMD 33 /* btm_sec has enough info to proceed */ 137 138 #define L2CEVT_ACK_TIMEOUT 34 /* RR delay timeout */ 139 140 141 /* Bitmask to skip over Broadcom feature reserved (ID) to avoid sending two 142 successive ID values, '0' id only or both */ 143 #define L2CAP_ADJ_BRCM_ID 0x1 144 #define L2CAP_ADJ_ZERO_ID 0x2 145 #define L2CAP_ADJ_ID 0x3 146 147 /* Return values for l2cu_process_peer_cfg_req() */ 148 #define L2CAP_PEER_CFG_UNACCEPTABLE 0 149 #define L2CAP_PEER_CFG_OK 1 150 #define L2CAP_PEER_CFG_DISCONNECT 2 151 152 /* eL2CAP option constants */ 153 #define L2CAP_MIN_RETRANS_TOUT 2000 /* Min retransmission timeout if no flush timeout or PBF */ 154 #define L2CAP_MIN_MONITOR_TOUT 12000 /* Min monitor timeout if no flush timeout or PBF */ 155 156 #define L2CAP_MAX_FCR_CFG_TRIES 2 /* Config attempts before disconnecting */ 157 158 typedef uint8_t tL2C_BLE_FIXED_CHNLS_MASK; 159 160 typedef struct 161 { 162 UINT8 next_tx_seq; /* Next sequence number to be Tx'ed */ 163 UINT8 last_rx_ack; /* Last sequence number ack'ed by the peer */ 164 UINT8 next_seq_expected; /* Next peer sequence number expected */ 165 UINT8 last_ack_sent; /* Last peer sequence number ack'ed */ 166 UINT8 num_tries; /* Number of retries to send a packet */ 167 UINT8 max_held_acks; /* Max acks we can hold before sending */ 168 169 BOOLEAN remote_busy; /* TRUE if peer has flowed us off */ 170 BOOLEAN local_busy; /* TRUE if we have flowed off the peer */ 171 172 BOOLEAN rej_sent; /* Reject was sent */ 173 BOOLEAN srej_sent; /* Selective Reject was sent */ 174 BOOLEAN wait_ack; /* Transmitter is waiting ack (poll sent) */ 175 BOOLEAN rej_after_srej; /* Send a REJ when SREJ clears */ 176 177 BOOLEAN send_f_rsp; /* We need to send an F-bit response */ 178 179 UINT16 rx_sdu_len; /* Length of the SDU being received */ 180 BT_HDR *p_rx_sdu; /* Buffer holding the SDU being received */ 181 BUFFER_Q waiting_for_ack_q; /* Buffers sent and waiting for peer to ack */ 182 BUFFER_Q srej_rcv_hold_q; /* Buffers rcvd but held pending SREJ rsp */ 183 BUFFER_Q retrans_q; /* Buffers being retransmitted */ 184 185 TIMER_LIST_ENT ack_timer; /* Timer delaying RR */ 186 TIMER_LIST_ENT mon_retrans_timer; /* Timer Monitor or Retransmission */ 187 188 #if (L2CAP_ERTM_STATS == TRUE) 189 UINT32 connect_tick_count; /* Time channel was established */ 190 UINT32 ertm_pkt_counts[2]; /* Packets sent and received */ 191 UINT32 ertm_byte_counts[2]; /* Bytes sent and received */ 192 UINT32 s_frames_sent[4]; /* S-frames sent (RR, REJ, RNR, SREJ) */ 193 UINT32 s_frames_rcvd[4]; /* S-frames rcvd (RR, REJ, RNR, SREJ) */ 194 UINT32 xmit_window_closed; /* # of times the xmit window was closed */ 195 UINT32 controller_idle; /* # of times less than 2 packets in controller */ 196 /* when the xmit window was closed */ 197 UINT32 pkts_retransmitted; /* # of packets that were retransmitted */ 198 UINT32 retrans_touts; /* # of retransmission timouts */ 199 UINT32 xmit_ack_touts; /* # of xmit ack timouts */ 200 201 #define L2CAP_ERTM_STATS_NUM_AVG 10 202 #define L2CAP_ERTM_STATS_AVG_NUM_SAMPLES 100 203 UINT32 ack_delay_avg_count; 204 UINT32 ack_delay_avg_index; 205 UINT32 throughput_start; 206 UINT32 throughput[L2CAP_ERTM_STATS_NUM_AVG]; 207 UINT32 ack_delay_avg[L2CAP_ERTM_STATS_NUM_AVG]; 208 UINT32 ack_delay_min[L2CAP_ERTM_STATS_NUM_AVG]; 209 UINT32 ack_delay_max[L2CAP_ERTM_STATS_NUM_AVG]; 210 UINT32 ack_q_count_avg[L2CAP_ERTM_STATS_NUM_AVG]; 211 UINT32 ack_q_count_min[L2CAP_ERTM_STATS_NUM_AVG]; 212 UINT32 ack_q_count_max[L2CAP_ERTM_STATS_NUM_AVG]; 213 #endif 214 } tL2C_FCRB; 215 216 217 /* Define a registration control block. Every application (e.g. RFCOMM, SDP, 218 ** TCS etc) that registers with L2CAP is assigned one of these. 219 */ 220 #if (L2CAP_UCD_INCLUDED == TRUE) 221 #define L2C_UCD_RCB_ID 0x00 222 #define L2C_UCD_STATE_UNUSED 0x00 223 #define L2C_UCD_STATE_W4_DATA 0x01 224 #define L2C_UCD_STATE_W4_RECEPTION 0x02 225 #define L2C_UCD_STATE_W4_MTU 0x04 226 227 typedef struct 228 { 229 UINT8 state; 230 tL2CAP_UCD_CB_INFO cb_info; 231 } tL2C_UCD_REG; 232 #endif 233 234 typedef struct 235 { 236 BOOLEAN in_use; 237 UINT16 psm; 238 UINT16 real_psm; /* This may be a dummy RCB for an o/b connection but */ 239 /* this is the real PSM that we need to connect to */ 240 #if (L2CAP_UCD_INCLUDED == TRUE) 241 tL2C_UCD_REG ucd; 242 #endif 243 244 tL2CAP_APPL_INFO api; 245 } tL2C_RCB; 246 247 248 /* Define a channel control block (CCB). There may be many channel control blocks 249 ** between the same two Bluetooth devices (i.e. on the same link). 250 ** Each CCB has unique local and remote CIDs. All channel control blocks on 251 ** the same physical link and are chained together. 252 */ 253 typedef struct t_l2c_ccb 254 { 255 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 256 tL2C_CHNL_STATE chnl_state; /* Channel state */ 257 258 struct t_l2c_ccb *p_next_ccb; /* Next CCB in the chain */ 259 struct t_l2c_ccb *p_prev_ccb; /* Previous CCB in the chain */ 260 struct t_l2c_linkcb *p_lcb; /* Link this CCB is assigned to */ 261 262 UINT16 local_cid; /* Local CID */ 263 UINT16 remote_cid; /* Remote CID */ 264 265 TIMER_LIST_ENT timer_entry; /* CCB Timer List Entry */ 266 267 tL2C_RCB *p_rcb; /* Registration CB for this Channel */ 268 bool should_free_rcb; /* True if RCB was allocated on the heap */ 269 270 #define IB_CFG_DONE 0x01 271 #define OB_CFG_DONE 0x02 272 #define RECONFIG_FLAG 0x04 /* True after initial configuration */ 273 #define CFG_DONE_MASK (IB_CFG_DONE | OB_CFG_DONE) 274 275 UINT8 config_done; /* Configuration flag word */ 276 UINT8 local_id; /* Transaction ID for local trans */ 277 UINT8 remote_id; /* Transaction ID for local */ 278 279 #define CCB_FLAG_NO_RETRY 0x01 /* no more retry */ 280 #define CCB_FLAG_SENT_PENDING 0x02 /* already sent pending response */ 281 UINT8 flags; 282 283 tL2CAP_CFG_INFO our_cfg; /* Our saved configuration options */ 284 tL2CAP_CH_CFG_BITS peer_cfg_bits; /* Store what peer wants to configure */ 285 tL2CAP_CFG_INFO peer_cfg; /* Peer's saved configuration options */ 286 287 BUFFER_Q xmit_hold_q; /* Transmit data hold queue */ 288 BOOLEAN cong_sent; /* Set when congested status sent */ 289 UINT16 buff_quota; /* Buffer quota before sending congestion */ 290 291 tL2CAP_CHNL_PRIORITY ccb_priority; /* Channel priority */ 292 tL2CAP_CHNL_DATA_RATE tx_data_rate; /* Channel Tx data rate */ 293 tL2CAP_CHNL_DATA_RATE rx_data_rate; /* Channel Rx data rate */ 294 295 /* Fields used for eL2CAP */ 296 tL2CAP_ERTM_INFO ertm_info; 297 tL2C_FCRB fcrb; 298 UINT16 tx_mps; /* TX MPS adjusted based on current controller */ 299 UINT16 max_rx_mtu; 300 UINT8 fcr_cfg_tries; /* Max number of negotiation attempts */ 301 BOOLEAN peer_cfg_already_rejected; /* If mode rejected once, set to TRUE */ 302 BOOLEAN out_cfg_fcr_present; /* TRUE if cfg response shoulkd include fcr options */ 303 304 #define L2CAP_CFG_FCS_OUR 0x01 /* Our desired config FCS option */ 305 #define L2CAP_CFG_FCS_PEER 0x02 /* Peer's desired config FCS option */ 306 #define L2CAP_BYPASS_FCS (L2CAP_CFG_FCS_OUR | L2CAP_CFG_FCS_PEER) 307 UINT8 bypass_fcs; 308 309 #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 310 BOOLEAN is_flushable; /* TRUE if channel is flushable */ 311 #endif 312 313 #if (L2CAP_NUM_FIXED_CHNLS > 0) || (L2CAP_UCD_INCLUDED == TRUE) 314 UINT16 fixed_chnl_idle_tout; /* Idle timeout to use for the fixed channel */ 315 #endif 316 UINT16 tx_data_len; 317 } tL2C_CCB; 318 319 /*********************************************************************** 320 ** Define a queue of linked CCBs. 321 */ 322 typedef struct 323 { 324 tL2C_CCB *p_first_ccb; /* The first channel in this queue */ 325 tL2C_CCB *p_last_ccb; /* The last channel in this queue */ 326 } tL2C_CCB_Q; 327 328 #if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 329 330 /* Round-Robin service for the same priority channels */ 331 #define L2CAP_NUM_CHNL_PRIORITY 3 /* Total number of priority group (high, medium, low)*/ 332 #define L2CAP_CHNL_PRIORITY_WEIGHT 5 /* weight per priority for burst transmission quota */ 333 #define L2CAP_GET_PRIORITY_QUOTA(pri) ((L2CAP_NUM_CHNL_PRIORITY - (pri)) * L2CAP_CHNL_PRIORITY_WEIGHT) 334 335 /* CCBs within the same LCB are served in round robin with priority */ 336 /* It will make sure that low priority channel (for example, HF signaling on RFCOMM) */ 337 /* can be sent to headset even if higher priority channel (for example, AV media channel) */ 338 /* is congested. */ 339 340 typedef struct 341 { 342 tL2C_CCB *p_serve_ccb; /* current serving ccb within priority group */ 343 tL2C_CCB *p_first_ccb; /* first ccb of priority group */ 344 UINT8 num_ccb; /* number of channels in priority group */ 345 UINT8 quota; /* burst transmission quota */ 346 } tL2C_RR_SERV; 347 348 #endif /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */ 349 350 /* Define a link control block. There is one link control block between 351 ** this device and any other device (i.e. BD ADDR). 352 */ 353 typedef struct t_l2c_linkcb 354 { 355 BOOLEAN in_use; /* TRUE when in use, FALSE when not */ 356 tL2C_LINK_STATE link_state; 357 358 TIMER_LIST_ENT timer_entry; /* Timer list entry for timeout evt */ 359 UINT16 handle; /* The handle used with LM */ 360 361 tL2C_CCB_Q ccb_queue; /* Queue of CCBs on this LCB */ 362 363 tL2C_CCB *p_pending_ccb; /* ccb of waiting channel during link disconnect */ 364 TIMER_LIST_ENT info_timer_entry; /* Timer entry for info resp timeout evt */ 365 BD_ADDR remote_bd_addr; /* The BD address of the remote */ 366 367 UINT8 link_role; /* Master or slave */ 368 UINT8 id; 369 UINT8 cur_echo_id; /* Current id value for echo request */ 370 tL2CA_ECHO_RSP_CB *p_echo_rsp_cb; /* Echo response callback */ 371 UINT16 idle_timeout; /* Idle timeout */ 372 BOOLEAN is_bonding; /* True - link active only for bonding */ 373 374 UINT16 link_flush_tout; /* Flush timeout used */ 375 376 UINT16 link_xmit_quota; /* Num outstanding pkts allowed */ 377 UINT16 sent_not_acked; /* Num packets sent but not acked */ 378 379 BOOLEAN partial_segment_being_sent; /* Set TRUE when a partial segment */ 380 /* is being sent. */ 381 BOOLEAN w4_info_rsp; /* TRUE when info request is active */ 382 UINT8 info_rx_bits; /* set 1 if received info type */ 383 UINT32 peer_ext_fea; /* Peer's extended features mask */ 384 list_t *link_xmit_data_q; /* Link transmit data buffer queue */ 385 386 UINT8 peer_chnl_mask[L2CAP_FIXED_CHNL_ARRAY_SIZE]; 387 #if (L2CAP_UCD_INCLUDED == TRUE) 388 UINT16 ucd_mtu; /* peer MTU on UCD */ 389 BUFFER_Q ucd_out_sec_pending_q; /* Security pending outgoing UCD packet */ 390 BUFFER_Q ucd_in_sec_pending_q; /* Security pending incoming UCD packet */ 391 #endif 392 393 BT_HDR *p_hcit_rcv_acl; /* Current HCIT ACL buf being rcvd */ 394 UINT16 idle_timeout_sv; /* Save current Idle timeout */ 395 UINT8 acl_priority; /* L2C_PRIORITY_NORMAL or L2C_PRIORITY_HIGH */ 396 tL2CA_NOCP_CB *p_nocp_cb; /* Num Cmpl pkts callback */ 397 398 #if (L2CAP_NUM_FIXED_CHNLS > 0) 399 tL2C_CCB *p_fixed_ccbs[L2CAP_NUM_FIXED_CHNLS]; 400 UINT16 disc_reason; 401 #endif 402 403 tBT_TRANSPORT transport; 404 #if (BLE_INCLUDED == TRUE) 405 tBLE_ADDR_TYPE ble_addr_type; 406 UINT16 tx_data_len; /* tx data length used in data length extension */ 407 408 #define L2C_BLE_CONN_UPDATE_DISABLE 0x1 /* disable update connection parameters */ 409 #define L2C_BLE_NEW_CONN_PARAM 0x2 /* new connection parameter to be set */ 410 #define L2C_BLE_UPDATE_PENDING 0x4 /* waiting for connection update finished */ 411 #define L2C_BLE_NOT_DEFAULT_PARAM 0x8 /* not using default connection parameters */ 412 UINT8 conn_update_mask; 413 414 UINT16 min_interval; /* parameters as requested by peripheral */ 415 UINT16 max_interval; 416 UINT16 latency; 417 UINT16 timeout; 418 419 #endif 420 421 #if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) 422 /* each priority group is limited burst transmission */ 423 /* round robin service for the same priority channels */ 424 tL2C_RR_SERV rr_serv[L2CAP_NUM_CHNL_PRIORITY]; 425 UINT8 rr_pri; /* current serving priority group */ 426 #endif 427 428 } tL2C_LCB; 429 430 /* Define the L2CAP control structure 431 */ 432 typedef struct 433 { 434 UINT8 l2cap_trace_level; 435 UINT16 controller_xmit_window; /* Total ACL window for all links */ 436 437 UINT16 round_robin_quota; /* Round-robin link quota */ 438 UINT16 round_robin_unacked; /* Round-robin unacked */ 439 BOOLEAN check_round_robin; /* Do a round robin check */ 440 441 BOOLEAN is_cong_cback_context; 442 443 tL2C_LCB lcb_pool[MAX_L2CAP_LINKS]; /* Link Control Block pool */ 444 tL2C_CCB ccb_pool[MAX_L2CAP_CHANNELS]; /* Channel Control Block pool */ 445 tL2C_RCB rcb_pool[MAX_L2CAP_CLIENTS]; /* Registration info pool */ 446 447 tL2C_CCB *p_free_ccb_first; /* Pointer to first free CCB */ 448 tL2C_CCB *p_free_ccb_last; /* Pointer to last free CCB */ 449 450 UINT8 desire_role; /* desire to be master/slave when accepting a connection */ 451 BOOLEAN disallow_switch; /* FALSE, to allow switch at create conn */ 452 UINT16 num_lm_acl_bufs; /* # of ACL buffers on controller */ 453 UINT16 idle_timeout; /* Idle timeout */ 454 455 list_t *rcv_pending_q; /* Recv pending queue */ 456 TIMER_LIST_ENT rcv_hold_tle; /* Timer list entry for rcv hold */ 457 458 tL2C_LCB *p_cur_hcit_lcb; /* Current HCI Transport buffer */ 459 UINT16 num_links_active; /* Number of links active */ 460 461 #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 462 UINT16 non_flushable_pbf; /* L2CAP_PKT_START_NON_FLUSHABLE if controller supports */ 463 /* Otherwise, L2CAP_PKT_START */ 464 BOOLEAN is_flush_active; /* TRUE if an HCI_Enhanced_Flush has been sent */ 465 #endif 466 467 #if L2CAP_CONFORMANCE_TESTING == TRUE 468 UINT32 test_info_resp; /* Conformance testing needs a dynamic response */ 469 #endif 470 471 #if (L2CAP_NUM_FIXED_CHNLS > 0) 472 tL2CAP_FIXED_CHNL_REG fixed_reg[L2CAP_NUM_FIXED_CHNLS]; /* Reg info for fixed channels */ 473 #endif 474 475 #if (BLE_INCLUDED == TRUE) 476 UINT16 num_ble_links_active; /* Number of LE links active */ 477 BOOLEAN is_ble_connecting; 478 BD_ADDR ble_connecting_bda; 479 UINT16 controller_le_xmit_window; /* Total ACL window for all links */ 480 tL2C_BLE_FIXED_CHNLS_MASK l2c_ble_fixed_chnls_mask; // LE fixed channels mask 481 UINT16 num_lm_ble_bufs; /* # of ACL buffers on controller */ 482 UINT16 ble_round_robin_quota; /* Round-robin link quota */ 483 UINT16 ble_round_robin_unacked; /* Round-robin unacked */ 484 BOOLEAN ble_check_round_robin; /* Do a round robin check */ 485 #endif 486 487 tL2CA_ECHO_DATA_CB *p_echo_data_cb; /* Echo data callback */ 488 489 #if (defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) && (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE)) 490 UINT16 high_pri_min_xmit_quota; /* Minimum number of ACL credit for high priority link */ 491 #endif /* (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) */ 492 493 UINT16 dyn_psm; 494 } tL2C_CB; 495 496 497 498 /* Define a structure that contains the information about a connection. 499 ** This structure is used to pass between functions, and not all the 500 ** fields will always be filled in. 501 */ 502 typedef struct 503 { 504 BD_ADDR bd_addr; /* Remote BD address */ 505 UINT8 status; /* Connection status */ 506 UINT16 psm; /* PSM of the connection */ 507 UINT16 l2cap_result; /* L2CAP result */ 508 UINT16 l2cap_status; /* L2CAP status */ 509 UINT16 remote_cid; /* Remote CID */ 510 } tL2C_CONN_INFO; 511 512 513 typedef void (tL2C_FCR_MGMT_EVT_HDLR) (UINT8, tL2C_CCB *); 514 515 /* The offset in a buffer that L2CAP will use when building commands. 516 */ 517 #define L2CAP_SEND_CMD_OFFSET 0 518 519 520 /* Number of ACL buffers to use for high priority channel 521 */ 522 #if (!defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) || (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == FALSE)) 523 #define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (L2CAP_HIGH_PRI_MIN_XMIT_QUOTA) 524 #else 525 #define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (l2cb.high_pri_min_xmit_quota) 526 #endif 527 528 #ifdef __cplusplus 529 extern "C" { 530 #endif 531 532 533 /* L2CAP global data 534 ************************************ 535 */ 536 #if (!defined L2C_DYNAMIC_MEMORY) || (L2C_DYNAMIC_MEMORY == FALSE) 537 extern tL2C_CB l2cb; 538 #else 539 extern tL2C_CB *l2c_cb_ptr; 540 #define l2cb (*l2c_cb_ptr) 541 #endif 542 543 544 /* Functions provided by l2c_main.c 545 ************************************ 546 */ 547 void l2c_init(void); 548 void l2c_free(void); 549 550 extern void l2c_process_timeout (TIMER_LIST_ENT *p_tle); 551 extern UINT8 l2c_data_write (UINT16 cid, BT_HDR *p_data, UINT16 flag); 552 extern void l2c_rcv_acl_data (BT_HDR *p_msg); 553 extern void l2c_process_held_packets (BOOLEAN timed_out); 554 555 /* Functions provided by l2c_utils.c 556 ************************************ 557 */ 558 extern tL2C_LCB *l2cu_allocate_lcb (BD_ADDR p_bd_addr, BOOLEAN is_bonding, tBT_TRANSPORT transport); 559 extern BOOLEAN l2cu_start_post_bond_timer (UINT16 handle); 560 extern void l2cu_release_lcb (tL2C_LCB *p_lcb); 561 extern tL2C_LCB *l2cu_find_lcb_by_bd_addr (BD_ADDR p_bd_addr, tBT_TRANSPORT transport); 562 extern tL2C_LCB *l2cu_find_lcb_by_handle (UINT16 handle); 563 extern void l2cu_update_lcb_4_bonding (BD_ADDR p_bd_addr, BOOLEAN is_bonding); 564 565 extern UINT8 l2cu_get_conn_role (tL2C_LCB *p_this_lcb); 566 extern BOOLEAN l2cu_set_acl_priority (BD_ADDR bd_addr, UINT8 priority, BOOLEAN reset_after_rs); 567 568 extern void l2cu_enqueue_ccb (tL2C_CCB *p_ccb); 569 extern void l2cu_dequeue_ccb (tL2C_CCB *p_ccb); 570 extern void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY priority); 571 572 extern tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid); 573 extern void l2cu_release_ccb (tL2C_CCB *p_ccb); 574 extern tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid); 575 extern tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid); 576 extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask); 577 extern BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb); 578 579 extern void l2cu_send_peer_cmd_reject (tL2C_LCB *p_lcb, UINT16 reason, 580 UINT8 rem_id,UINT16 p1, UINT16 p2); 581 extern void l2cu_send_peer_connect_req (tL2C_CCB *p_ccb); 582 extern void l2cu_send_peer_connect_rsp (tL2C_CCB *p_ccb, UINT16 result, UINT16 status); 583 extern void l2cu_send_peer_config_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 584 extern void l2cu_send_peer_config_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 585 extern void l2cu_send_peer_config_rej (tL2C_CCB *p_ccb, UINT8 *p_data, UINT16 data_len, UINT16 rej_len); 586 extern void l2cu_send_peer_disc_req (tL2C_CCB *p_ccb); 587 extern void l2cu_send_peer_disc_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 local_cid, UINT16 remote_cid); 588 extern void l2cu_send_peer_echo_req (tL2C_LCB *p_lcb, UINT8 *p_data, UINT16 data_len); 589 extern void l2cu_send_peer_echo_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 590 extern void l2cu_send_peer_info_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT16 info_type); 591 extern void l2cu_reject_connection (tL2C_LCB *p_lcb, UINT16 remote_cid, UINT8 rem_id, UINT16 result); 592 extern void l2cu_send_peer_info_req (tL2C_LCB *p_lcb, UINT16 info_type); 593 extern void l2cu_set_acl_hci_header (BT_HDR *p_buf, tL2C_CCB *p_ccb); 594 extern void l2cu_check_channel_congestion (tL2C_CCB *p_ccb); 595 extern void l2cu_disconnect_chnl (tL2C_CCB *p_ccb); 596 597 #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) 598 extern void l2cu_set_non_flushable_pbf(BOOLEAN); 599 #endif 600 601 #if (BLE_INCLUDED == TRUE) 602 extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); 603 extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); 604 #endif 605 606 extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); 607 extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); 608 extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); 609 610 /* Functions provided by l2c_ucd.c 611 ************************************ 612 */ 613 #if (L2CAP_UCD_INCLUDED == TRUE) 614 void l2c_ucd_delete_sec_pending_q(tL2C_LCB *p_lcb); 615 void l2c_ucd_enqueue_pending_out_sec_q(tL2C_CCB *p_ccb, void *p_data); 616 BOOLEAN l2c_ucd_check_pending_info_req(tL2C_CCB *p_ccb); 617 BOOLEAN l2c_ucd_check_pending_out_sec_q(tL2C_CCB *p_ccb); 618 void l2c_ucd_send_pending_out_sec_q(tL2C_CCB *p_ccb); 619 void l2c_ucd_discard_pending_out_sec_q(tL2C_CCB *p_ccb); 620 BOOLEAN l2c_ucd_check_pending_in_sec_q(tL2C_CCB *p_ccb); 621 void l2c_ucd_send_pending_in_sec_q(tL2C_CCB *p_ccb); 622 void l2c_ucd_discard_pending_in_sec_q(tL2C_CCB *p_ccb); 623 BOOLEAN l2c_ucd_check_rx_pkts(tL2C_LCB *p_lcb, BT_HDR *p_msg); 624 BOOLEAN l2c_ucd_process_event(tL2C_CCB *p_ccb, UINT16 event, void *p_data); 625 #endif 626 627 #if (BLE_INCLUDED == TRUE) 628 extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); 629 extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); 630 #endif 631 632 extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); 633 extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); 634 extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); 635 636 637 /* Functions provided for Broadcom Aware 638 **************************************** 639 */ 640 extern BOOLEAN l2cu_check_feature_req (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 641 extern void l2cu_check_feature_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); 642 extern void l2cu_send_feature_req (tL2C_CCB *p_ccb); 643 644 extern tL2C_RCB *l2cu_allocate_rcb (UINT16 psm); 645 extern tL2C_RCB *l2cu_find_rcb_by_psm (UINT16 psm); 646 extern void l2cu_release_rcb (tL2C_RCB *p_rcb); 647 648 extern UINT8 l2cu_process_peer_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 649 extern void l2cu_process_peer_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 650 extern void l2cu_process_our_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 651 extern void l2cu_process_our_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 652 653 extern void l2cu_device_reset (void); 654 extern tL2C_LCB *l2cu_find_lcb_by_state (tL2C_LINK_STATE state); 655 extern BOOLEAN l2cu_lcb_disconnecting (void); 656 657 extern BOOLEAN l2cu_create_conn (tL2C_LCB *p_lcb, tBT_TRANSPORT transport); 658 extern BOOLEAN l2cu_create_conn_after_switch (tL2C_LCB *p_lcb); 659 extern BT_HDR *l2cu_get_next_buffer_to_send (tL2C_LCB *p_lcb); 660 extern void l2cu_resubmit_pending_sec_req (BD_ADDR p_bda); 661 extern void l2cu_initialize_amp_ccb (tL2C_LCB *p_lcb); 662 extern void l2cu_adjust_out_mps (tL2C_CCB *p_ccb); 663 664 /* Functions provided by l2c_link.c 665 ************************************ 666 */ 667 extern BOOLEAN l2c_link_hci_conn_req (BD_ADDR bd_addr); 668 extern BOOLEAN l2c_link_hci_conn_comp (UINT8 status, UINT16 handle, BD_ADDR p_bda); 669 extern BOOLEAN l2c_link_hci_disc_comp (UINT16 handle, UINT8 reason); 670 extern BOOLEAN l2c_link_hci_qos_violation (UINT16 handle); 671 extern void l2c_link_timeout (tL2C_LCB *p_lcb); 672 extern void l2c_info_timeout (tL2C_LCB *p_lcb); 673 extern void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf); 674 extern void l2c_link_adjust_allocation (void); 675 extern void l2c_link_process_num_completed_pkts (UINT8 *p); 676 extern void l2c_link_process_num_completed_blocks (UINT8 controller_id, UINT8 *p, UINT16 evt_len); 677 extern void l2c_link_processs_num_bufs (UINT16 num_lm_acl_bufs); 678 extern UINT8 l2c_link_pkts_rcvd (UINT16 *num_pkts, UINT16 *handles); 679 extern void l2c_link_role_changed (BD_ADDR bd_addr, UINT8 new_role, UINT8 hci_status); 680 extern void l2c_link_sec_comp (BD_ADDR p_bda, tBT_TRANSPORT trasnport, void *p_ref_data, UINT8 status); 681 extern void l2c_link_segments_xmitted (BT_HDR *p_msg); 682 extern void l2c_pin_code_request (BD_ADDR bd_addr); 683 extern void l2c_link_adjust_chnl_allocation (void); 684 685 #if (BLE_INCLUDED == TRUE) 686 extern void l2c_link_processs_ble_num_bufs (UINT16 num_lm_acl_bufs); 687 #endif 688 689 #if L2CAP_WAKE_PARKED_LINK == TRUE 690 extern BOOLEAN l2c_link_check_power_mode ( tL2C_LCB *p_lcb ); 691 #define L2C_LINK_CHECK_POWER_MODE(x) l2c_link_check_power_mode ((x)) 692 #else // L2CAP_WAKE_PARKED_LINK 693 #define L2C_LINK_CHECK_POWER_MODE(x) (FALSE) 694 #endif // L2CAP_WAKE_PARKED_LINK 695 696 #if L2CAP_CONFORMANCE_TESTING == TRUE 697 /* Used only for conformance testing */ 698 extern void l2cu_set_info_rsp_mask (UINT32 mask); 699 #endif 700 701 /* Functions provided by l2c_csm.c 702 ************************************ 703 */ 704 extern void l2c_csm_execute (tL2C_CCB *p_ccb, UINT16 event, void *p_data); 705 706 extern void l2c_enqueue_peer_data (tL2C_CCB *p_ccb, BT_HDR *p_buf); 707 708 709 /* Functions provided by l2c_fcr.c 710 ************************************ 711 */ 712 extern void l2c_fcr_cleanup (tL2C_CCB *p_ccb); 713 extern void l2c_fcr_proc_pdu (tL2C_CCB *p_ccb, BT_HDR *p_buf); 714 extern void l2c_fcr_proc_tout (tL2C_CCB *p_ccb); 715 extern void l2c_fcr_proc_ack_tout (tL2C_CCB *p_ccb); 716 extern void l2c_fcr_send_S_frame (tL2C_CCB *p_ccb, UINT16 function_code, UINT16 pf_bit); 717 extern BT_HDR *l2c_fcr_clone_buf (BT_HDR *p_buf, UINT16 new_offset, UINT16 no_of_bytes, UINT8 pool); 718 extern BOOLEAN l2c_fcr_is_flow_controlled (tL2C_CCB *p_ccb); 719 extern BT_HDR *l2c_fcr_get_next_xmit_sdu_seg (tL2C_CCB *p_ccb, UINT16 max_packet_length); 720 extern void l2c_fcr_start_timer (tL2C_CCB *p_ccb); 721 722 /* Configuration negotiation */ 723 extern UINT8 l2c_fcr_chk_chan_modes (tL2C_CCB *p_ccb); 724 extern BOOLEAN l2c_fcr_adj_our_req_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 725 extern void l2c_fcr_adj_our_rsp_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_peer_cfg); 726 extern BOOLEAN l2c_fcr_renegotiate_chan(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 727 extern UINT8 l2c_fcr_process_peer_cfg_req(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); 728 extern void l2c_fcr_adj_monitor_retran_timeout (tL2C_CCB *p_ccb); 729 extern void l2c_fcr_stop_timer (tL2C_CCB *p_ccb); 730 731 /* Functions provided by l2c_ble.c 732 ************************************ 733 */ 734 #if (BLE_INCLUDED == TRUE) 735 extern BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb); 736 extern void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len); 737 extern void l2cble_conn_comp (UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type, 738 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout); 739 extern BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb); 740 extern void l2cble_notify_le_connection (BD_ADDR bda); 741 extern void l2c_ble_link_adjust_allocation (void); 742 extern void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status); 743 744 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) 745 extern void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max, 746 UINT16 latency, UINT16 timeout); 747 #endif 748 749 extern void l2cble_update_data_length(tL2C_LCB *p_lcb); 750 extern void l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda, UINT16 fix_cid, 751 UINT16 tx_mtu); 752 extern void l2cble_process_data_length_change_event(UINT16 handle, UINT16 tx_data_len, 753 UINT16 rx_data_len); 754 755 #endif 756 extern void l2cu_process_fixed_disc_cback (tL2C_LCB *p_lcb); 757 758 #ifdef __cplusplus 759 } 760 #endif 761 762 #endif 763
