/****************************************************************************** * * Copyright (C) 1999-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ /****************************************************************************** * * This file contains L2CAP internal definitions * ******************************************************************************/ #ifndef L2C_INT_H #define L2C_INT_H #include #include "stack/btm_api.h" #include "stack/l2c_api.h" #include "stack/l2cdefs.h" #include "osi/list.h" #include "osi/fixed_queue.h" #define L2CAP_MIN_MTU 48 /* Minimum acceptable MTU is 48 bytes */ /* LE credit based L2CAP connection parameters */ #define L2CAP_LE_MIN_MTU 23 #define L2CAP_LE_MIN_MPS 23 #define L2CAP_LE_MAX_MPS 65533 #define L2CAP_LE_MIN_CREDIT 0 #define L2CAP_LE_MAX_CREDIT 65535 #define L2CAP_LE_DEFAULT_MTU 512 #define L2CAP_LE_DEFAULT_MPS 23 #define L2CAP_LE_DEFAULT_CREDIT 1 /* Timeouts. Since L2CAP works off a 1-second list, all are in seconds. */ #define L2CAP_LINK_ROLE_SWITCH_TOUT 10 /* 10 seconds */ #define L2CAP_LINK_CONNECT_TOUT 60 /* 30 seconds */ #define L2CAP_LINK_CONNECT_TOUT_EXT 120 /* 120 seconds */ #define L2CAP_ECHO_RSP_TOUT 30 /* 30 seconds */ #define L2CAP_LINK_FLOW_CONTROL_TOUT 2 /* 2 seconds */ #define L2CAP_LINK_DISCONNECT_TOUT 45 /* 45 seconds */ #ifndef L2CAP_CHNL_CONNECT_TOUT /* BTIF needs to override for internal project needs */ #define L2CAP_CHNL_CONNECT_TOUT 60 /* 60 seconds */ #endif #define L2CAP_CHNL_CONNECT_TOUT_EXT 120 /* 120 seconds */ #define L2CAP_CHNL_CFG_TIMEOUT 30 /* 30 seconds */ #define L2CAP_CHNL_DISCONNECT_TOUT 10 /* 10 seconds */ #define L2CAP_DELAY_CHECK_SM4 2 /* 2 seconds */ #define L2CAP_WAIT_INFO_RSP_TOUT 3 /* 3 seconds */ #define L2CAP_WAIT_UNPARK_TOUT 2 /* 2 seconds */ #define L2CAP_LINK_INFO_RESP_TOUT 2 /* 2 seconds */ #define L2CAP_UPDATE_CONN_PARAM_TOUT 6 /* 6 seconds */ #define L2CAP_BLE_LINK_CONNECT_TOUT BLE_ESTABLISH_LINK_CONNECTION_TIMEOUT // configed in menuconfig #define L2CAP_BLE_CONN_PARAM_UPD_TOUT 30 /* 30 seconds */ /* quick timer uses millisecond unit */ #define L2CAP_DEFAULT_RETRANS_TOUT 2000 /* 2000 milliseconds */ #define L2CAP_DEFAULT_MONITOR_TOUT 12000 /* 12000 milliseconds */ #define L2CAP_FCR_ACK_TOUT 200 /* 200 milliseconds */ #define L2CAP_CACHE_ATT_ACL_NUM 10 /* Define the possible L2CAP channel states. The names of ** the states may seem a bit strange, but they are taken from ** the Bluetooth specification. */ typedef enum { CST_CLOSED, /* Channel is in clodes state */ CST_ORIG_W4_SEC_COMP, /* Originator waits security clearence */ CST_TERM_W4_SEC_COMP, /* Acceptor waits security clearence */ CST_W4_L2CAP_CONNECT_RSP, /* Waiting for peer conenct response */ CST_W4_L2CA_CONNECT_RSP, /* Waiting for upper layer connect rsp */ CST_CONFIG, /* Negotiating configuration */ CST_OPEN, /* Data transfer state */ CST_W4_L2CAP_DISCONNECT_RSP, /* Waiting for peer disconnect rsp */ CST_W4_L2CA_DISCONNECT_RSP /* Waiting for upper layer disc rsp */ } tL2C_CHNL_STATE; /* Define the possible L2CAP link states */ typedef enum { LST_DISCONNECTED, LST_CONNECT_HOLDING, LST_CONNECTING_WAIT_SWITCH, LST_CONNECTING, LST_CONNECTED, LST_DISCONNECTING } tL2C_LINK_STATE; /* Define input events to the L2CAP link and channel state machines. The names ** of the events may seem a bit strange, but they are taken from ** the Bluetooth specification. */ #define L2CEVT_LP_CONNECT_CFM 0 /* Lower layer connect confirm */ #define L2CEVT_LP_CONNECT_CFM_NEG 1 /* Lower layer connect confirm (failed) */ #define L2CEVT_LP_CONNECT_IND 2 /* Lower layer connect indication */ #define L2CEVT_LP_DISCONNECT_IND 3 /* Lower layer disconnect indication */ #define L2CEVT_LP_QOS_CFM 4 /* Lower layer QOS confirmation */ #define L2CEVT_LP_QOS_CFM_NEG 5 /* Lower layer QOS confirmation (failed)*/ #define L2CEVT_LP_QOS_VIOLATION_IND 6 /* Lower layer QOS violation indication */ #define L2CEVT_SEC_COMP 7 /* Security cleared successfully */ #define L2CEVT_SEC_COMP_NEG 8 /* Security procedure failed */ #define L2CEVT_L2CAP_CONNECT_REQ 10 /* Peer connection request */ #define L2CEVT_L2CAP_CONNECT_RSP 11 /* Peer connection response */ #define L2CEVT_L2CAP_CONNECT_RSP_PND 12 /* Peer connection response pending */ #define L2CEVT_L2CAP_CONNECT_RSP_NEG 13 /* Peer connection response (failed) */ #define L2CEVT_L2CAP_CONFIG_REQ 14 /* Peer configuration request */ #define L2CEVT_L2CAP_CONFIG_RSP 15 /* Peer configuration response */ #define L2CEVT_L2CAP_CONFIG_RSP_NEG 16 /* Peer configuration response (failed) */ #define L2CEVT_L2CAP_DISCONNECT_REQ 17 /* Peer disconnect request */ #define L2CEVT_L2CAP_DISCONNECT_RSP 18 /* Peer disconnect response */ #define L2CEVT_L2CAP_INFO_RSP 19 /* Peer information response */ #define L2CEVT_L2CAP_DATA 20 /* Peer data */ #define L2CEVT_L2CA_CONNECT_REQ 21 /* Upper layer connect request */ #define L2CEVT_L2CA_CONNECT_RSP 22 /* Upper layer connect response */ #define L2CEVT_L2CA_CONNECT_RSP_NEG 23 /* Upper layer connect response (failed)*/ #define L2CEVT_L2CA_CONFIG_REQ 24 /* Upper layer config request */ #define L2CEVT_L2CA_CONFIG_RSP 25 /* Upper layer config response */ #define L2CEVT_L2CA_CONFIG_RSP_NEG 26 /* Upper layer config response (failed) */ #define L2CEVT_L2CA_DISCONNECT_REQ 27 /* Upper layer disconnect request */ #define L2CEVT_L2CA_DISCONNECT_RSP 28 /* Upper layer disconnect response */ #define L2CEVT_L2CA_DATA_READ 29 /* Upper layer data read */ #define L2CEVT_L2CA_DATA_WRITE 30 /* Upper layer data write */ #define L2CEVT_L2CA_FLUSH_REQ 31 /* Upper layer flush */ #define L2CEVT_TIMEOUT 32 /* Timeout */ #define L2CEVT_SEC_RE_SEND_CMD 33 /* btm_sec has enough info to proceed */ #define L2CEVT_ACK_TIMEOUT 34 /* RR delay timeout */ /* Bitmask to skip over Broadcom feature reserved (ID) to avoid sending two successive ID values, '0' id only or both */ #define L2CAP_ADJ_BRCM_ID 0x1 #define L2CAP_ADJ_ZERO_ID 0x2 #define L2CAP_ADJ_ID 0x3 /* Return values for l2cu_process_peer_cfg_req() */ #define L2CAP_PEER_CFG_UNACCEPTABLE 0 #define L2CAP_PEER_CFG_OK 1 #define L2CAP_PEER_CFG_DISCONNECT 2 /* eL2CAP option constants */ #define L2CAP_MIN_RETRANS_TOUT 2000 /* Min retransmission timeout if no flush timeout or PBF */ #define L2CAP_MIN_MONITOR_TOUT 12000 /* Min monitor timeout if no flush timeout or PBF */ #define L2CAP_MAX_FCR_CFG_TRIES 2 /* Config attempts before disconnecting */ #ifndef MIN #define MIN(a, b) (((a) < (b)) ? (a) : (b)) #endif typedef uint8_t tL2C_BLE_FIXED_CHNLS_MASK; typedef struct { UINT8 next_tx_seq; /* Next sequence number to be Tx'ed */ UINT8 last_rx_ack; /* Last sequence number ack'ed by the peer */ UINT8 next_seq_expected; /* Next peer sequence number expected */ UINT8 last_ack_sent; /* Last peer sequence number ack'ed */ UINT8 num_tries; /* Number of retries to send a packet */ UINT8 max_held_acks; /* Max acks we can hold before sending */ BOOLEAN remote_busy; /* TRUE if peer has flowed us off */ BOOLEAN local_busy; /* TRUE if we have flowed off the peer */ BOOLEAN rej_sent; /* Reject was sent */ BOOLEAN srej_sent; /* Selective Reject was sent */ BOOLEAN wait_ack; /* Transmitter is waiting ack (poll sent) */ BOOLEAN rej_after_srej; /* Send a REJ when SREJ clears */ BOOLEAN send_f_rsp; /* We need to send an F-bit response */ UINT16 rx_sdu_len; /* Length of the SDU being received */ BT_HDR *p_rx_sdu; /* Buffer holding the SDU being received */ fixed_queue_t *waiting_for_ack_q; /* Buffers sent and waiting for peer to ack */ fixed_queue_t *srej_rcv_hold_q; /* Buffers rcvd but held pending SREJ rsp */ fixed_queue_t *retrans_q; /* Buffers being retransmitted */ TIMER_LIST_ENT ack_timer; /* Timer delaying RR */ TIMER_LIST_ENT mon_retrans_timer; /* Timer Monitor or Retransmission */ #if (L2CAP_ERTM_STATS == TRUE) UINT32 connect_tick_count; /* Time channel was established */ UINT32 ertm_pkt_counts[2]; /* Packets sent and received */ UINT32 ertm_byte_counts[2]; /* Bytes sent and received */ UINT32 s_frames_sent[4]; /* S-frames sent (RR, REJ, RNR, SREJ) */ UINT32 s_frames_rcvd[4]; /* S-frames rcvd (RR, REJ, RNR, SREJ) */ UINT32 xmit_window_closed; /* # of times the xmit window was closed */ UINT32 controller_idle; /* # of times less than 2 packets in controller */ /* when the xmit window was closed */ UINT32 pkts_retransmitted; /* # of packets that were retransmitted */ UINT32 retrans_touts; /* # of retransmission timouts */ UINT32 xmit_ack_touts; /* # of xmit ack timouts */ #define L2CAP_ERTM_STATS_NUM_AVG 10 #define L2CAP_ERTM_STATS_AVG_NUM_SAMPLES 100 UINT32 ack_delay_avg_count; UINT32 ack_delay_avg_index; UINT32 throughput_start; UINT32 throughput[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_delay_avg[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_delay_min[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_delay_max[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_q_count_avg[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_q_count_min[L2CAP_ERTM_STATS_NUM_AVG]; UINT32 ack_q_count_max[L2CAP_ERTM_STATS_NUM_AVG]; #endif } tL2C_FCRB; /* Define a registration control block. Every application (e.g. RFCOMM, SDP, ** TCS etc) that registers with L2CAP is assigned one of these. */ #if (L2CAP_UCD_INCLUDED == TRUE) #define L2C_UCD_RCB_ID 0x00 #define L2C_UCD_STATE_UNUSED 0x00 #define L2C_UCD_STATE_W4_DATA 0x01 #define L2C_UCD_STATE_W4_RECEPTION 0x02 #define L2C_UCD_STATE_W4_MTU 0x04 typedef struct { UINT8 state; tL2CAP_UCD_CB_INFO cb_info; } tL2C_UCD_REG; #endif typedef struct { BOOLEAN in_use; UINT16 psm; UINT16 real_psm; /* This may be a dummy RCB for an o/b connection but */ /* this is the real PSM that we need to connect to */ #if (L2CAP_UCD_INCLUDED == TRUE) tL2C_UCD_REG ucd; #endif tL2CAP_APPL_INFO api; } tL2C_RCB; typedef void (tL2CAP_SEC_CBACK) (BD_ADDR bd_addr, tBT_TRANSPORT transport, void *p_ref_data, tBTM_STATUS result); typedef struct { UINT16 psm; tBT_TRANSPORT transport; BOOLEAN is_originator; tL2CAP_SEC_CBACK *p_callback; void *p_ref_data; }tL2CAP_SEC_DATA; #ifndef L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA #define L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA 10 #endif /* Define a channel control block (CCB). There may be many channel control blocks ** between the same two Bluetooth devices (i.e. on the same link). ** Each CCB has unique local and remote CIDs. All channel control blocks on ** the same physical link and are chained together. */ typedef struct t_l2c_ccb { BOOLEAN in_use; /* TRUE when in use, FALSE when not */ tL2C_CHNL_STATE chnl_state; /* Channel state */ tL2CAP_LE_CFG_INFO local_conn_cfg; /* Our config for ble conn oriented channel */ tL2CAP_LE_CFG_INFO peer_conn_cfg; /* Peer device config ble conn oriented channel */ struct t_l2c_ccb *p_next_ccb; /* Next CCB in the chain */ struct t_l2c_ccb *p_prev_ccb; /* Previous CCB in the chain */ struct t_l2c_linkcb *p_lcb; /* Link this CCB is assigned to */ UINT16 local_cid; /* Local CID */ UINT16 remote_cid; /* Remote CID */ TIMER_LIST_ENT timer_entry; /* CCB Timer List Entry */ tL2C_RCB *p_rcb; /* Registration CB for this Channel */ bool should_free_rcb; /* True if RCB was allocated on the heap */ #define IB_CFG_DONE 0x01 #define OB_CFG_DONE 0x02 #define RECONFIG_FLAG 0x04 /* True after initial configuration */ #define CFG_DONE_MASK (IB_CFG_DONE | OB_CFG_DONE) UINT8 config_done; /* Configuration flag word */ UINT8 local_id; /* Transaction ID for local trans */ UINT8 remote_id; /* Transaction ID for local */ #define CCB_FLAG_NO_RETRY 0x01 /* no more retry */ #define CCB_FLAG_SENT_PENDING 0x02 /* already sent pending response */ UINT8 flags; tL2CAP_CFG_INFO our_cfg; /* Our saved configuration options */ tL2CAP_CH_CFG_BITS peer_cfg_bits; /* Store what peer wants to configure */ tL2CAP_CFG_INFO peer_cfg; /* Peer's saved configuration options */ fixed_queue_t *xmit_hold_q; /* Transmit data hold queue */ BOOLEAN cong_sent; /* Set when congested status sent */ UINT16 buff_quota; /* Buffer quota before sending congestion */ tL2CAP_CHNL_PRIORITY ccb_priority; /* Channel priority */ tL2CAP_CHNL_DATA_RATE tx_data_rate; /* Channel Tx data rate */ tL2CAP_CHNL_DATA_RATE rx_data_rate; /* Channel Rx data rate */ /* Fields used for eL2CAP */ tL2CAP_ERTM_INFO ertm_info; tL2C_FCRB fcrb; UINT16 tx_mps; /* TX MPS adjusted based on current controller */ UINT16 max_rx_mtu; UINT8 fcr_cfg_tries; /* Max number of negotiation attempts */ BOOLEAN peer_cfg_already_rejected; /* If mode rejected once, set to TRUE */ BOOLEAN out_cfg_fcr_present; /* TRUE if cfg response shoulkd include fcr options */ #define L2CAP_CFG_FCS_OUR 0x01 /* Our desired config FCS option */ #define L2CAP_CFG_FCS_PEER 0x02 /* Peer's desired config FCS option */ #define L2CAP_BYPASS_FCS (L2CAP_CFG_FCS_OUR | L2CAP_CFG_FCS_PEER) UINT8 bypass_fcs; #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) BOOLEAN is_flushable; /* TRUE if channel is flushable */ #endif #if (L2CAP_NUM_FIXED_CHNLS > 0) || (L2CAP_UCD_INCLUDED == TRUE) UINT16 fixed_chnl_idle_tout; /* Idle timeout to use for the fixed channel */ #endif UINT16 tx_data_len; } tL2C_CCB; /*********************************************************************** ** Define a queue of linked CCBs. */ typedef struct { tL2C_CCB *p_first_ccb; /* The first channel in this queue */ tL2C_CCB *p_last_ccb; /* The last channel in this queue */ } tL2C_CCB_Q; #if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) /* Round-Robin service for the same priority channels */ #define L2CAP_NUM_CHNL_PRIORITY 3 /* Total number of priority group (high, medium, low)*/ #define L2CAP_CHNL_PRIORITY_WEIGHT 5 /* weight per priority for burst transmission quota */ #define L2CAP_GET_PRIORITY_QUOTA(pri) ((L2CAP_NUM_CHNL_PRIORITY - (pri)) * L2CAP_CHNL_PRIORITY_WEIGHT) /* CCBs within the same LCB are served in round robin with priority */ /* It will make sure that low priority channel (for example, HF signaling on RFCOMM) */ /* can be sent to headset even if higher priority channel (for example, AV media channel) */ /* is congested. */ typedef struct { tL2C_CCB *p_serve_ccb; /* current serving ccb within priority group */ tL2C_CCB *p_first_ccb; /* first ccb of priority group */ UINT8 num_ccb; /* number of channels in priority group */ UINT8 quota; /* burst transmission quota */ } tL2C_RR_SERV; #endif /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */ /* Define a link control block. There is one link control block between ** this device and any other device (i.e. BD ADDR). */ typedef struct t_l2c_linkcb { BOOLEAN in_use; /* TRUE when in use, FALSE when not */ tL2C_LINK_STATE link_state; BOOLEAN is_aux; /* This variable used for BLE 5.0 or higher version when do auxiliary connection */ TIMER_LIST_ENT timer_entry; /* Timer list entry for timeout evt */ UINT16 handle; /* The handle used with LM */ UINT16 completed_packets; /* The number of conpleted packets */ tL2C_CCB_Q ccb_queue; /* Queue of CCBs on this LCB */ tL2C_CCB *p_pending_ccb; /* ccb of waiting channel during link disconnect */ TIMER_LIST_ENT info_timer_entry; /* Timer entry for info resp timeout evt */ TIMER_LIST_ENT upda_con_timer; /* Timer entry for update connection parametr */ BD_ADDR remote_bd_addr; /* The BD address of the remote */ UINT8 link_role; /* Master or slave */ UINT8 id; UINT8 cur_echo_id; /* Current id value for echo request */ tL2CA_ECHO_RSP_CB *p_echo_rsp_cb; /* Echo response callback */ UINT16 idle_timeout; /* Idle timeout */ BOOLEAN is_bonding; /* True - link active only for bonding */ UINT16 link_flush_tout; /* Flush timeout used */ UINT16 link_xmit_quota; /* Num outstanding pkts allowed */ UINT16 sent_not_acked; /* Num packets sent but not acked */ BOOLEAN partial_segment_being_sent; /* Set TRUE when a partial segment */ /* is being sent. */ BOOLEAN w4_info_rsp; /* TRUE when info request is active */ UINT8 info_rx_bits; /* set 1 if received info type */ UINT32 peer_ext_fea; /* Peer's extended features mask */ list_t *link_xmit_data_q; /* Link transmit data buffer queue */ UINT8 peer_chnl_mask[L2CAP_FIXED_CHNL_ARRAY_SIZE]; #if (L2CAP_UCD_INCLUDED == TRUE) UINT16 ucd_mtu; /* peer MTU on UCD */ fixed_queue_t *ucd_out_sec_pending_q; /* Security pending outgoing UCD packet */ fixed_queue_t *ucd_in_sec_pending_q; /* Security pending incoming UCD packet */ #endif BT_HDR *p_hcit_rcv_acl; /* Current HCIT ACL buf being rcvd */ UINT16 idle_timeout_sv; /* Save current Idle timeout */ UINT8 acl_priority; /* L2C_PRIORITY_NORMAL or L2C_PRIORITY_HIGH */ tL2CA_NOCP_CB *p_nocp_cb; /* Num Cmpl pkts callback */ #if (L2CAP_NUM_FIXED_CHNLS > 0) tL2C_CCB *p_fixed_ccbs[L2CAP_NUM_FIXED_CHNLS]; UINT16 disc_reason; #endif tBT_TRANSPORT transport; #if (BLE_INCLUDED == TRUE) tBLE_ADDR_TYPE open_addr_type; /* be set by open API */ tBLE_ADDR_TYPE ble_addr_type; UINT16 tx_data_len; /* tx data length used in data length extension */ fixed_queue_t *le_sec_pending_q; /* LE coc channels waiting for security check completion */ UINT8 sec_act; #define L2C_BLE_CONN_UPDATE_DISABLE 0x1 /* disable update connection parameters */ #define L2C_BLE_NEW_CONN_PARAM 0x2 /* new connection parameter to be set */ #define L2C_BLE_UPDATE_PENDING 0x4 /* waiting for connection update finished */ #define L2C_BLE_NOT_DEFAULT_PARAM 0x8 /* not using default connection parameters */ #define L2C_BLE_UPDATE_PARAM_FULL 0x10 /* update connection parameters full, can not update */ UINT8 conn_update_mask; /* cache connection parameters that wait to update */ UINT16 waiting_update_conn_min_interval; UINT16 waiting_update_conn_max_interval; UINT16 waiting_update_conn_latency; UINT16 waiting_update_conn_timeout; /* cache parameters that is being updated */ UINT16 updating_conn_min_interval; UINT16 updating_conn_max_interval; bool updating_param_flag; /* current connection parameters that current connection is using */ UINT16 current_used_conn_interval; UINT16 current_used_conn_latency; UINT16 current_used_conn_timeout; /* connection parameters update order: waiting_update_conn_xx -> updating_conn_xx -> current_used_conn_xx */ #endif #if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) /* each priority group is limited burst transmission */ /* round robin service for the same priority channels */ tL2C_RR_SERV rr_serv[L2CAP_NUM_CHNL_PRIORITY]; UINT8 rr_pri; /* current serving priority group */ #endif } tL2C_LCB; /* Define the L2CAP control structure */ typedef struct { UINT8 l2cap_trace_level; UINT16 controller_xmit_window; /* Total ACL window for all links */ UINT16 round_robin_quota; /* Round-robin link quota */ UINT16 round_robin_unacked; /* Round-robin unacked */ BOOLEAN check_round_robin; /* Do a round robin check */ BOOLEAN is_cong_cback_context; list_t *p_lcb_pool; /* Link Control Block pool */ list_t *p_ccb_pool; /* Channel Control Block pool */ tL2C_RCB rcb_pool[MAX_L2CAP_CLIENTS]; /* Registration info pool */ UINT8 desire_role; /* desire to be master/slave when accepting a connection */ BOOLEAN disallow_switch; /* FALSE, to allow switch at create conn */ UINT16 num_lm_acl_bufs; /* # of ACL buffers on controller */ UINT16 idle_timeout; /* Idle timeout */ list_t *rcv_pending_q; /* Recv pending queue */ TIMER_LIST_ENT rcv_hold_tle; /* Timer list entry for rcv hold */ tL2C_LCB *p_cur_hcit_lcb; /* Current HCI Transport buffer */ UINT16 num_links_active; /* Number of links active */ #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) UINT16 non_flushable_pbf; /* L2CAP_PKT_START_NON_FLUSHABLE if controller supports */ /* Otherwise, L2CAP_PKT_START */ BOOLEAN is_flush_active; /* TRUE if an HCI_Enhanced_Flush has been sent */ #endif #if L2CAP_CONFORMANCE_TESTING == TRUE UINT32 test_info_resp; /* Conformance testing needs a dynamic response */ #endif #if (L2CAP_NUM_FIXED_CHNLS > 0) tL2CAP_FIXED_CHNL_REG fixed_reg[L2CAP_NUM_FIXED_CHNLS]; /* Reg info for fixed channels */ #endif #if (BLE_INCLUDED == TRUE) UINT16 num_ble_links_active; /* Number of LE links active */ BOOLEAN is_ble_connecting; BD_ADDR ble_connecting_bda; UINT16 controller_le_xmit_window; /* Total ACL window for all links */ tL2C_BLE_FIXED_CHNLS_MASK l2c_ble_fixed_chnls_mask; // LE fixed channels mask UINT16 num_lm_ble_bufs; /* # of ACL buffers on controller */ UINT16 ble_round_robin_quota; /* Round-robin link quota */ UINT16 ble_round_robin_unacked; /* Round-robin unacked */ BOOLEAN ble_check_round_robin; /* Do a round robin check */ tL2C_RCB ble_rcb_pool[BLE_MAX_L2CAP_CLIENTS]; /* Registration info pool */ #endif tL2CA_ECHO_DATA_CB *p_echo_data_cb; /* Echo data callback */ #if (defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) && (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE)) UINT16 high_pri_min_xmit_quota; /* Minimum number of ACL credit for high priority link */ #endif /* (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) */ UINT16 dyn_psm; } tL2C_CB; /* Define a structure that contains the information about a connection. ** This structure is used to pass between functions, and not all the ** fields will always be filled in. */ typedef struct { BD_ADDR bd_addr; /* Remote BD address */ UINT8 status; /* Connection status */ UINT16 psm; /* PSM of the connection */ UINT16 l2cap_result; /* L2CAP result */ UINT16 l2cap_status; /* L2CAP status */ UINT16 remote_cid; /* Remote CID */ } tL2C_CONN_INFO; typedef void (tL2C_FCR_MGMT_EVT_HDLR) (UINT8, tL2C_CCB *); /* The offset in a buffer that L2CAP will use when building commands. */ #define L2CAP_SEND_CMD_OFFSET 0 /* Number of ACL buffers to use for high priority channel */ #if (!defined(L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE) || (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == FALSE)) #define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (L2CAP_HIGH_PRI_MIN_XMIT_QUOTA) #else #define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A (l2cb.high_pri_min_xmit_quota) #endif #ifdef __cplusplus extern "C" { #endif /* L2CAP global data ************************************ */ #if (!defined L2C_DYNAMIC_MEMORY) || (L2C_DYNAMIC_MEMORY == FALSE) extern tL2C_CB l2cb; #else extern tL2C_CB *l2c_cb_ptr; #define l2cb (*l2c_cb_ptr) #endif /* Functions provided by l2c_main.c ************************************ */ void l2c_init(void); void l2c_free(void); extern void l2c_process_timeout (TIMER_LIST_ENT *p_tle); extern UINT8 l2c_data_write (UINT16 cid, BT_HDR *p_data, UINT16 flag); extern void l2c_rcv_acl_data (BT_HDR *p_msg); extern void l2c_process_held_packets (BOOLEAN timed_out); /* Functions provided by l2c_utils.c ************************************ */ extern tL2C_LCB *l2cu_allocate_lcb (BD_ADDR p_bd_addr, BOOLEAN is_bonding, tBT_TRANSPORT transport); extern BOOLEAN l2cu_start_post_bond_timer (UINT16 handle); extern void l2cu_release_lcb (tL2C_LCB *p_lcb); extern tL2C_LCB *l2cu_find_lcb_by_bd_addr (BD_ADDR p_bd_addr, tBT_TRANSPORT transport); extern tL2C_LCB *l2cu_find_lcb_by_handle (UINT16 handle); extern void l2cu_update_lcb_4_bonding (BD_ADDR p_bd_addr, BOOLEAN is_bonding); extern UINT8 l2cu_get_conn_role (tL2C_LCB *p_this_lcb); extern BOOLEAN l2cu_set_acl_priority (BD_ADDR bd_addr, UINT8 priority, BOOLEAN reset_after_rs); extern void l2cu_enqueue_ccb (tL2C_CCB *p_ccb); extern void l2cu_dequeue_ccb (tL2C_CCB *p_ccb); extern void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY priority); extern tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid); extern void l2cu_release_ccb (tL2C_CCB *p_ccb); extern tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid); extern tL2C_CCB *l2cu_find_free_ccb(void); extern tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid); extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask); extern BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb); extern void l2cu_send_peer_cmd_reject (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id, UINT16 p1, UINT16 p2); extern void l2cu_send_peer_connect_req (tL2C_CCB *p_ccb); extern void l2cu_send_peer_connect_rsp (tL2C_CCB *p_ccb, UINT16 result, UINT16 status); extern void l2cu_send_peer_config_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_send_peer_config_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_send_peer_config_rej (tL2C_CCB *p_ccb, UINT8 *p_data, UINT16 data_len, UINT16 rej_len); extern void l2cu_send_peer_disc_req (tL2C_CCB *p_ccb); extern void l2cu_send_peer_disc_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 local_cid, UINT16 remote_cid); extern void l2cu_send_peer_echo_req (tL2C_LCB *p_lcb, UINT8 *p_data, UINT16 data_len); extern void l2cu_send_peer_echo_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); extern void l2cu_send_peer_info_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT16 info_type); extern void l2cu_reject_connection (tL2C_LCB *p_lcb, UINT16 remote_cid, UINT8 rem_id, UINT16 result); extern void l2cu_send_peer_info_req (tL2C_LCB *p_lcb, UINT16 info_type); extern void l2cu_set_acl_hci_header (BT_HDR *p_buf, tL2C_CCB *p_ccb); extern void l2cu_check_channel_congestion (tL2C_CCB *p_ccb); extern void l2cu_disconnect_chnl (tL2C_CCB *p_ccb); #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) extern void l2cu_set_non_flushable_pbf(BOOLEAN); #endif #if (BLE_INCLUDED == TRUE) extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); #endif extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); /* Functions provided by l2c_ucd.c ************************************ */ #if (L2CAP_UCD_INCLUDED == TRUE) void l2c_ucd_delete_sec_pending_q(tL2C_LCB *p_lcb); void l2c_ucd_enqueue_pending_out_sec_q(tL2C_CCB *p_ccb, void *p_data); BOOLEAN l2c_ucd_check_pending_info_req(tL2C_CCB *p_ccb); BOOLEAN l2c_ucd_check_pending_out_sec_q(tL2C_CCB *p_ccb); void l2c_ucd_send_pending_out_sec_q(tL2C_CCB *p_ccb); void l2c_ucd_discard_pending_out_sec_q(tL2C_CCB *p_ccb); BOOLEAN l2c_ucd_check_pending_in_sec_q(tL2C_CCB *p_ccb); void l2c_ucd_send_pending_in_sec_q(tL2C_CCB *p_ccb); void l2c_ucd_discard_pending_in_sec_q(tL2C_CCB *p_ccb); BOOLEAN l2c_ucd_check_rx_pkts(tL2C_LCB *p_lcb, BT_HDR *p_msg); BOOLEAN l2c_ucd_process_event(tL2C_CCB *p_ccb, UINT16 event, void *p_data); #endif #if (BLE_INCLUDED == TRUE) extern void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout); extern void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id); extern void l2cu_reject_ble_connection (tL2C_LCB *p_lcb, UINT8 rem_id, UINT16 result); extern void l2cu_send_peer_ble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result); extern void l2cu_send_peer_ble_credit_based_conn_req (tL2C_CCB *p_ccb); extern void l2cu_send_peer_ble_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value); extern void l2cu_send_peer_ble_credit_based_disconn_req(tL2C_CCB *p_ccb); #endif #if (C2H_FLOW_CONTROL_INCLUDED == TRUE) extern UINT8 l2cu_find_completed_packets(UINT16 *handles, UINT16 *num_packets); #endif ///C2H_FLOW_CONTROL_INCLUDED == TRUE extern BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr); extern void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb); extern void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb); /* Functions provided for Broadcom Aware **************************************** */ extern BOOLEAN l2cu_check_feature_req (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); extern void l2cu_check_feature_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len); extern void l2cu_send_feature_req (tL2C_CCB *p_ccb); extern tL2C_RCB *l2cu_allocate_rcb (UINT16 psm); extern tL2C_RCB *l2cu_find_rcb_by_psm (UINT16 psm); extern void l2cu_release_rcb (tL2C_RCB *p_rcb); extern tL2C_RCB *l2cu_allocate_ble_rcb (UINT16 psm); extern tL2C_RCB *l2cu_find_ble_rcb_by_psm (UINT16 psm); extern UINT8 l2cu_process_peer_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_process_peer_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_process_our_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_process_our_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2cu_device_reset (void); extern tL2C_LCB *l2cu_find_lcb_by_state (tL2C_LINK_STATE state); extern BOOLEAN l2cu_lcb_disconnecting (void); extern BOOLEAN l2cu_create_conn (tL2C_LCB *p_lcb, tBT_TRANSPORT transport); extern BOOLEAN l2cu_create_conn_after_switch (tL2C_LCB *p_lcb); extern BT_HDR *l2cu_get_next_buffer_to_send (tL2C_LCB *p_lcb); extern void l2cu_resubmit_pending_sec_req (BD_ADDR p_bda); extern void l2cu_initialize_amp_ccb (tL2C_LCB *p_lcb); extern void l2cu_adjust_out_mps (tL2C_CCB *p_ccb); /* Functions provided by l2c_link.c ************************************ */ extern BOOLEAN l2c_link_hci_conn_req (BD_ADDR bd_addr); extern BOOLEAN l2c_link_hci_conn_comp (UINT8 status, UINT16 handle, BD_ADDR p_bda); extern BOOLEAN l2c_link_hci_disc_comp (UINT16 handle, UINT8 reason); extern BOOLEAN l2c_link_hci_qos_violation (UINT16 handle); extern void l2c_link_timeout (tL2C_LCB *p_lcb); extern void l2c_info_timeout (tL2C_LCB *p_lcb); extern void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf); extern void l2c_link_adjust_allocation (void); extern void l2c_link_process_num_completed_pkts (UINT8 *p); extern void l2c_link_process_num_completed_blocks (UINT8 controller_id, UINT8 *p, UINT16 evt_len); extern void l2c_link_processs_num_bufs (UINT16 num_lm_acl_bufs); extern UINT8 l2c_link_pkts_rcvd (UINT16 *num_pkts, UINT16 *handles); extern void l2c_link_role_changed (BD_ADDR bd_addr, UINT8 new_role, UINT8 hci_status); extern void l2c_link_sec_comp (BD_ADDR p_bda, tBT_TRANSPORT transport, void *p_ref_data, UINT8 status); extern void l2c_link_segments_xmitted (BT_HDR *p_msg); extern void l2c_pin_code_request (BD_ADDR bd_addr); extern void l2c_link_adjust_chnl_allocation (void); #if (BLE_INCLUDED == TRUE) extern void l2c_link_processs_ble_num_bufs (UINT16 num_lm_acl_bufs); #endif #if L2CAP_WAKE_PARKED_LINK == TRUE extern BOOLEAN l2c_link_check_power_mode ( tL2C_LCB *p_lcb ); #define L2C_LINK_CHECK_POWER_MODE(x) l2c_link_check_power_mode ((x)) #else // L2CAP_WAKE_PARKED_LINK #define L2C_LINK_CHECK_POWER_MODE(x) (FALSE) #endif // L2CAP_WAKE_PARKED_LINK #if L2CAP_CONFORMANCE_TESTING == TRUE /* Used only for conformance testing */ extern void l2cu_set_info_rsp_mask (UINT32 mask); #endif /* Functions provided by l2c_csm.c ************************************ */ extern void l2c_csm_execute (tL2C_CCB *p_ccb, UINT16 event, void *p_data); extern void l2c_enqueue_peer_data (tL2C_CCB *p_ccb, BT_HDR *p_buf); /* Functions provided by l2c_fcr.c ************************************ */ extern void l2c_fcr_cleanup (tL2C_CCB *p_ccb); extern void l2c_fcr_proc_pdu (tL2C_CCB *p_ccb, BT_HDR *p_buf); extern void l2c_fcr_proc_tout (tL2C_CCB *p_ccb); extern void l2c_fcr_proc_ack_tout (tL2C_CCB *p_ccb); extern void l2c_fcr_send_S_frame (tL2C_CCB *p_ccb, UINT16 function_code, UINT16 pf_bit); extern BT_HDR *l2c_fcr_clone_buf (BT_HDR *p_buf, UINT16 new_offset, UINT16 no_of_bytes); extern BOOLEAN l2c_fcr_is_flow_controlled (tL2C_CCB *p_ccb); extern BT_HDR *l2c_fcr_get_next_xmit_sdu_seg (tL2C_CCB *p_ccb, UINT16 max_packet_length); extern void l2c_fcr_start_timer (tL2C_CCB *p_ccb); /* Configuration negotiation */ extern UINT8 l2c_fcr_chk_chan_modes (tL2C_CCB *p_ccb); extern BOOLEAN l2c_fcr_adj_our_req_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2c_fcr_adj_our_rsp_options (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_peer_cfg); extern BOOLEAN l2c_fcr_renegotiate_chan(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern UINT8 l2c_fcr_process_peer_cfg_req(tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg); extern void l2c_fcr_adj_monitor_retran_timeout (tL2C_CCB *p_ccb); extern void l2c_fcr_stop_timer (tL2C_CCB *p_ccb); extern void l2c_fcr_free_timer (tL2C_CCB *p_ccb); /* Functions provided by l2c_ble.c ************************************ */ #if (BLE_INCLUDED == TRUE) extern BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb); extern void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len); extern void l2cble_conn_comp (UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type, UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout); extern BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb); extern void l2cble_notify_le_connection (BD_ADDR bda); extern void l2c_ble_link_adjust_allocation (void); extern void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status, UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout); extern void l2cble_get_conn_param_format_err_from_contoller(UINT8 status, UINT16 handle); extern void l2cble_credit_based_conn_req (tL2C_CCB *p_ccb); extern void l2cble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result); extern void l2cble_send_peer_disc_req(tL2C_CCB *p_ccb); extern void l2cble_send_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value); extern BOOLEAN l2ble_sec_access_req(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator, tL2CAP_SEC_CBACK *p_callback, void *p_ref_data); #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) extern void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max, UINT16 latency, UINT16 timeout); #endif extern void l2cble_update_data_length(tL2C_LCB *p_lcb); extern void l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda, UINT16 fix_cid, UINT16 tx_mtu); extern void l2c_send_update_conn_params_cb(tL2C_LCB *p_lcb, UINT8 status); extern void l2cble_process_data_length_change_event(UINT16 handle, UINT16 tx_data_len, UINT16 rx_data_len); extern UINT32 CalConnectParamTimeout(tL2C_LCB *p_lcb); #endif extern void l2cu_process_fixed_disc_cback (tL2C_LCB *p_lcb); #ifdef __cplusplus } #endif #endif