| /****************************************************************************** |
| * |
| * 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 <stdbool.h> |
| |
| #include "bt_common.h" |
| #include "btm_api.h" |
| #include "l2c_api.h" |
| #include "l2cdefs.h" |
| #include "osi/include/alarm.h" |
| #include "osi/include/fixed_queue.h" |
| #include "osi/include/list.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 |
| |
| /* |
| * Timeout values (in milliseconds). |
| */ |
| #define L2CAP_LINK_ROLE_SWITCH_TIMEOUT_MS (10 * 1000) /* 10 seconds */ |
| #define L2CAP_LINK_CONNECT_TIMEOUT_MS (60 * 1000) /* 30 seconds */ |
| #define L2CAP_LINK_CONNECT_EXT_TIMEOUT_MS (120 * 1000) /* 120 seconds */ |
| #define L2CAP_ECHO_RSP_TIMEOUT_MS (30 * 1000) /* 30 seconds */ |
| #define L2CAP_LINK_FLOW_CONTROL_TIMEOUT_MS (2 * 1000) /* 2 seconds */ |
| #define L2CAP_LINK_DISCONNECT_TIMEOUT_MS (30 * 1000) /* 30 seconds */ |
| #define L2CAP_CHNL_CONNECT_TIMEOUT_MS (60 * 1000) /* 60 seconds */ |
| #define L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS (120 * 1000) /* 120 seconds */ |
| #define L2CAP_CHNL_CFG_TIMEOUT_MS (30 * 1000) /* 30 seconds */ |
| #define L2CAP_CHNL_DISCONNECT_TIMEOUT_MS (10 * 1000) /* 10 seconds */ |
| #define L2CAP_DELAY_CHECK_SM4_TIMEOUT_MS (2 * 1000) /* 2 seconds */ |
| #define L2CAP_WAIT_INFO_RSP_TIMEOUT_MS (3 * 1000) /* 3 seconds */ |
| #define L2CAP_BLE_LINK_CONNECT_TIMEOUT_MS (30 * 1000) /* 30 seconds */ |
| #define L2CAP_FCR_ACK_TIMEOUT_MS 200 /* 200 milliseconds */ |
| |
| /* 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 closed 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. |
| */ |
| /* Lower layer */ |
| #define L2CEVT_LP_CONNECT_CFM 0 /* connect confirm */ |
| #define L2CEVT_LP_CONNECT_CFM_NEG 1 /* connect confirm (failed) */ |
| #define L2CEVT_LP_CONNECT_IND 2 /* connect indication */ |
| #define L2CEVT_LP_DISCONNECT_IND 3 /* disconnect indication */ |
| #define L2CEVT_LP_QOS_CFM 4 /* QOS confirmation */ |
| #define L2CEVT_LP_QOS_CFM_NEG 5 /* QOS confirmation (failed)*/ |
| #define L2CEVT_LP_QOS_VIOLATION_IND 6 /* QOS violation indication */ |
| |
| /* Security */ |
| #define L2CEVT_SEC_COMP 7 /* cleared successfully */ |
| #define L2CEVT_SEC_COMP_NEG 8 /* procedure failed */ |
| |
| /* Peer connection */ |
| #define L2CEVT_L2CAP_CONNECT_REQ 10 /* request */ |
| #define L2CEVT_L2CAP_CONNECT_RSP 11 /* response */ |
| #define L2CEVT_L2CAP_CONNECT_RSP_PND 12 /* response pending */ |
| #define L2CEVT_L2CAP_CONNECT_RSP_NEG 13 /* response (failed) */ |
| |
| /* Peer configuration */ |
| #define L2CEVT_L2CAP_CONFIG_REQ 14 /* request */ |
| #define L2CEVT_L2CAP_CONFIG_RSP 15 /* response */ |
| #define L2CEVT_L2CAP_CONFIG_RSP_NEG 16 /* 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 */ |
| |
| /* Upper layer */ |
| #define L2CEVT_L2CA_CONNECT_REQ 21 /* connect request */ |
| #define L2CEVT_L2CA_CONNECT_RSP 22 /* connect response */ |
| #define L2CEVT_L2CA_CONNECT_RSP_NEG 23 /* connect response (failed)*/ |
| #define L2CEVT_L2CA_CONFIG_REQ 24 /* config request */ |
| #define L2CEVT_L2CA_CONFIG_RSP 25 /* config response */ |
| #define L2CEVT_L2CA_CONFIG_RSP_NEG 26 /* config response (failed) */ |
| #define L2CEVT_L2CA_DISCONNECT_REQ 27 /* disconnect request */ |
| #define L2CEVT_L2CA_DISCONNECT_RSP 28 /* disconnect response */ |
| #define L2CEVT_L2CA_DATA_READ 29 /* data read */ |
| #define L2CEVT_L2CA_DATA_WRITE 30 /* data write */ |
| #define L2CEVT_L2CA_FLUSH_REQ 31 /* 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 */ |
| |
| #define L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT \ |
| 35 /* Upper layer credit packet \ |
| */ |
| #define L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT 36 /* Peer credit packet */ |
| |
| /* 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 */ |
| /* Min retransmission timeout if no flush timeout or PBF */ |
| #define L2CAP_MIN_RETRANS_TOUT 2000 |
| /* Min monitor timeout if no flush timeout or PBF */ |
| #define L2CAP_MIN_MONITOR_TOUT 12000 |
| |
| #define L2CAP_MAX_FCR_CFG_TRIES 2 /* Config attempts before disconnecting */ |
| |
| typedef uint8_t tL2C_BLE_FIXED_CHNLS_MASK; |
| |
| typedef struct { |
| uint8_t next_tx_seq; /* Next sequence number to be Tx'ed */ |
| uint8_t last_rx_ack; /* Last sequence number ack'ed by the peer */ |
| uint8_t next_seq_expected; /* Next peer sequence number expected */ |
| uint8_t last_ack_sent; /* Last peer sequence number ack'ed */ |
| uint8_t num_tries; /* Number of retries to send a packet */ |
| uint8_t max_held_acks; /* Max acks we can hold before sending */ |
| |
| bool remote_busy; /* true if peer has flowed us off */ |
| bool local_busy; /* true if we have flowed off the peer */ |
| |
| bool rej_sent; /* Reject was sent */ |
| bool srej_sent; /* Selective Reject was sent */ |
| bool wait_ack; /* Transmitter is waiting ack (poll sent) */ |
| bool rej_after_srej; /* Send a REJ when SREJ clears */ |
| |
| bool send_f_rsp; /* We need to send an F-bit response */ |
| |
| uint16_t 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 */ |
| |
| alarm_t* ack_timer; /* Timer delaying RR */ |
| alarm_t* mon_retrans_timer; /* Timer Monitor or Retransmission */ |
| |
| #if (L2CAP_ERTM_STATS == TRUE) |
| uint32_t connect_tick_count; /* Time channel was established */ |
| uint32_t ertm_pkt_counts[2]; /* Packets sent and received */ |
| uint32_t ertm_byte_counts[2]; /* Bytes sent and received */ |
| uint32_t s_frames_sent[4]; /* S-frames sent (RR, REJ, RNR, SREJ) */ |
| uint32_t s_frames_rcvd[4]; /* S-frames rcvd (RR, REJ, RNR, SREJ) */ |
| uint32_t xmit_window_closed; /* # of times the xmit window was closed */ |
| uint32_t controller_idle; /* # of times less than 2 packets in controller */ |
| /* when the xmit window was closed */ |
| uint32_t pkts_retransmitted; /* # of packets that were retransmitted */ |
| uint32_t retrans_touts; /* # of retransmission timouts */ |
| uint32_t xmit_ack_touts; /* # of xmit ack timouts */ |
| |
| #define L2CAP_ERTM_STATS_NUM_AVG 10 |
| #define L2CAP_ERTM_STATS_AVG_NUM_SAMPLES 100 |
| uint32_t ack_delay_avg_count; |
| uint32_t ack_delay_avg_index; |
| uint32_t throughput_start; |
| uint32_t throughput[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t ack_delay_avg[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t ack_delay_min[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t ack_delay_max[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t ack_q_count_avg[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t ack_q_count_min[L2CAP_ERTM_STATS_NUM_AVG]; |
| uint32_t 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_t state; |
| tL2CAP_UCD_CB_INFO cb_info; |
| } tL2C_UCD_REG; |
| #endif |
| |
| typedef struct { |
| bool in_use; |
| uint16_t psm; |
| uint16_t 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; |
| |
| #ifndef L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA |
| #define L2CAP_CBB_DEFAULT_DATA_RATE_BUFF_QUOTA 100 |
| #endif |
| |
| typedef void(tL2CAP_SEC_CBACK)(BD_ADDR bd_addr, tBT_TRANSPORT trasnport, |
| void* p_ref_data, tBTM_STATUS result); |
| |
| typedef struct { |
| uint16_t psm; |
| tBT_TRANSPORT transport; |
| bool is_originator; |
| tL2CAP_SEC_CBACK* p_callback; |
| void* p_ref_data; |
| } tL2CAP_SEC_DATA; |
| |
| /* 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 { |
| bool 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 */ |
| bool is_first_seg; /* Dtermine whether the received packet is the first |
| segment or not */ |
| BT_HDR* ble_sdu; /* Buffer for storing unassembled sdu*/ |
| uint16_t ble_sdu_length; /* Length of unassembled sdu length*/ |
| 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_t local_cid; /* Local CID */ |
| uint16_t remote_cid; /* Remote CID */ |
| |
| alarm_t* l2c_ccb_timer; /* CCB Timer 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_t config_done; /* Configuration flag word */ |
| uint8_t local_id; /* Transaction ID for local trans */ |
| uint8_t 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_t 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 */ |
| bool cong_sent; /* Set when congested status sent */ |
| uint16_t 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_t tx_mps; /* TX MPS adjusted based on current controller */ |
| uint16_t max_rx_mtu; |
| uint8_t fcr_cfg_tries; /* Max number of negotiation attempts */ |
| bool peer_cfg_already_rejected; /* If mode rejected once, set to true */ |
| bool 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_t bypass_fcs; |
| |
| #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) |
| bool is_flushable; /* true if channel is flushable */ |
| #endif |
| |
| #if (L2CAP_NUM_FIXED_CHNLS > 0 || L2CAP_UCD_INCLUDED == TRUE) |
| uint16_t fixed_chnl_idle_tout; /* Idle timeout to use for the fixed channel */ |
| #endif |
| uint16_t 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 the 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_t num_ccb; /* number of channels in priority group */ |
| uint8_t 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 { |
| bool in_use; /* true when in use, false when not */ |
| tL2C_LINK_STATE link_state; |
| |
| alarm_t* l2c_lcb_timer; /* Timer entry for timeout evt */ |
| uint16_t handle; /* The handle used with LM */ |
| |
| tL2C_CCB_Q ccb_queue; /* Queue of CCBs on this LCB */ |
| |
| tL2C_CCB* p_pending_ccb; /* ccb of waiting channel during link disconnect */ |
| alarm_t* info_resp_timer; /* Timer entry for info resp timeout evt */ |
| BD_ADDR remote_bd_addr; /* The BD address of the remote */ |
| |
| uint8_t link_role; /* Master or slave */ |
| uint8_t id; |
| uint8_t cur_echo_id; /* Current id value for echo request */ |
| tL2CA_ECHO_RSP_CB* p_echo_rsp_cb; /* Echo response callback */ |
| uint16_t idle_timeout; /* Idle timeout */ |
| bool is_bonding; /* True - link active only for bonding */ |
| |
| uint16_t link_flush_tout; /* Flush timeout used */ |
| |
| uint16_t link_xmit_quota; /* Num outstanding pkts allowed */ |
| uint16_t sent_not_acked; /* Num packets sent but not acked */ |
| |
| bool partial_segment_being_sent; /* Set true when a partial segment */ |
| /* is being sent. */ |
| bool w4_info_rsp; /* true when info request is active */ |
| uint8_t info_rx_bits; /* set 1 if received info type */ |
| uint32_t peer_ext_fea; /* Peer's extended features mask */ |
| list_t* link_xmit_data_q; /* Link transmit data buffer queue */ |
| |
| uint8_t peer_chnl_mask[L2CAP_FIXED_CHNL_ARRAY_SIZE]; |
| #if (L2CAP_UCD_INCLUDED == TRUE) |
| uint16_t 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_t idle_timeout_sv; /* Save current Idle timeout */ |
| uint8_t 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_t disc_reason; |
| #endif |
| |
| tBT_TRANSPORT transport; |
| uint8_t initiating_phys; // LE PHY used for connection initiation |
| tBLE_ADDR_TYPE ble_addr_type; |
| uint16_t 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_t 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 */ |
| uint8_t conn_update_mask; |
| |
| uint16_t min_interval; /* parameters as requested by peripheral */ |
| uint16_t max_interval; |
| uint16_t latency; |
| uint16_t timeout; |
| |
| #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_t rr_pri; /* current serving priority group */ |
| #endif |
| |
| } tL2C_LCB; |
| |
| /* Define the L2CAP control structure |
| */ |
| typedef struct { |
| uint8_t l2cap_trace_level; |
| uint16_t controller_xmit_window; /* Total ACL window for all links */ |
| |
| uint16_t round_robin_quota; /* Round-robin link quota */ |
| uint16_t round_robin_unacked; /* Round-robin unacked */ |
| bool check_round_robin; /* Do a round robin check */ |
| |
| bool is_cong_cback_context; |
| |
| tL2C_LCB lcb_pool[MAX_L2CAP_LINKS]; /* Link Control Block pool */ |
| tL2C_CCB ccb_pool[MAX_L2CAP_CHANNELS]; /* Channel Control Block pool */ |
| tL2C_RCB rcb_pool[MAX_L2CAP_CLIENTS]; /* Registration info pool */ |
| |
| tL2C_CCB* p_free_ccb_first; /* Pointer to first free CCB */ |
| tL2C_CCB* p_free_ccb_last; /* Pointer to last free CCB */ |
| |
| uint8_t |
| desire_role; /* desire to be master/slave when accepting a connection */ |
| bool disallow_switch; /* false, to allow switch at create conn */ |
| uint16_t num_lm_acl_bufs; /* # of ACL buffers on controller */ |
| uint16_t idle_timeout; /* Idle timeout */ |
| |
| list_t* rcv_pending_q; /* Recv pending queue */ |
| alarm_t* receive_hold_timer; /* Timer entry for rcv hold */ |
| |
| tL2C_LCB* p_cur_hcit_lcb; /* Current HCI Transport buffer */ |
| uint16_t num_links_active; /* Number of links active */ |
| |
| #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) |
| uint16_t non_flushable_pbf; /* L2CAP_PKT_START_NON_FLUSHABLE if controller |
| supports */ |
| /* Otherwise, L2CAP_PKT_START */ |
| bool is_flush_active; /* true if an HCI_Enhanced_Flush has been sent */ |
| #endif |
| |
| #if (L2CAP_CONFORMANCE_TESTING == TRUE) |
| uint32_t 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 |
| |
| uint16_t num_ble_links_active; /* Number of LE links active */ |
| bool is_ble_connecting; |
| BD_ADDR ble_connecting_bda; |
| uint16_t 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_t num_lm_ble_bufs; /* # of ACL buffers on controller */ |
| uint16_t ble_round_robin_quota; /* Round-robin link quota */ |
| uint16_t ble_round_robin_unacked; /* Round-robin unacked */ |
| bool ble_check_round_robin; /* Do a round robin check */ |
| tL2C_RCB ble_rcb_pool[BLE_MAX_L2CAP_CLIENTS]; /* Registration info pool */ |
| |
| tL2CA_ECHO_DATA_CB* p_echo_data_cb; /* Echo data callback */ |
| |
| #if (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) |
| uint16_t high_pri_min_xmit_quota; /* Minimum number of ACL credit for high |
| priority link */ |
| #endif /* (L2CAP_HIGH_PRI_CHAN_QUOTA_IS_CONFIGURABLE == TRUE) */ |
| |
| uint16_t 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_t status; /* Connection status */ |
| uint16_t psm; /* PSM of the connection */ |
| uint16_t l2cap_result; /* L2CAP result */ |
| uint16_t l2cap_status; /* L2CAP status */ |
| uint16_t remote_cid; /* Remote CID */ |
| } tL2C_CONN_INFO; |
| |
| typedef void(tL2C_FCR_MGMT_EVT_HDLR)(uint8_t, 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 (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 |
| |
| /* L2CAP global data |
| *********************************** |
| */ |
| extern tL2C_CB l2cb; |
| |
| /* Functions provided by l2c_main.cc |
| *********************************** |
| */ |
| void l2c_init(void); |
| void l2c_free(void); |
| |
| extern void l2c_receive_hold_timer_timeout(void* data); |
| extern void l2c_ccb_timer_timeout(void* data); |
| extern void l2c_lcb_timer_timeout(void* data); |
| extern void l2c_fcrb_ack_timer_timeout(void* data); |
| extern uint8_t l2c_data_write(uint16_t cid, BT_HDR* p_data, uint16_t flag); |
| extern void l2c_rcv_acl_data(BT_HDR* p_msg); |
| extern void l2c_process_held_packets(bool timed_out); |
| |
| /* Functions provided by l2c_utils.cc |
| *********************************** |
| */ |
| extern tL2C_LCB* l2cu_allocate_lcb(BD_ADDR p_bd_addr, bool is_bonding, |
| tBT_TRANSPORT transport); |
| extern bool l2cu_start_post_bond_timer(uint16_t 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_t handle); |
| extern void l2cu_update_lcb_4_bonding(BD_ADDR p_bd_addr, bool is_bonding); |
| |
| extern uint8_t l2cu_get_conn_role(tL2C_LCB* p_this_lcb); |
| extern bool l2cu_set_acl_priority(BD_ADDR bd_addr, uint8_t priority, |
| bool 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_t cid); |
| extern void l2cu_release_ccb(tL2C_CCB* p_ccb); |
| extern tL2C_CCB* l2cu_find_ccb_by_cid(tL2C_LCB* p_lcb, uint16_t local_cid); |
| extern tL2C_CCB* l2cu_find_ccb_by_remote_cid(tL2C_LCB* p_lcb, |
| uint16_t remote_cid); |
| extern void l2cu_adj_id(tL2C_LCB* p_lcb, uint8_t adj_mask); |
| extern bool l2c_is_cmd_rejected(uint8_t cmd_code, uint8_t id, tL2C_LCB* p_lcb); |
| |
| extern void l2cu_send_peer_cmd_reject(tL2C_LCB* p_lcb, uint16_t reason, |
| uint8_t rem_id, uint16_t p1, uint16_t p2); |
| extern void l2cu_send_peer_connect_req(tL2C_CCB* p_ccb); |
| extern void l2cu_send_peer_connect_rsp(tL2C_CCB* p_ccb, uint16_t result, |
| uint16_t 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_t* p_data, |
| uint16_t data_len, uint16_t 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_t remote_id, |
| uint16_t local_cid, uint16_t remote_cid); |
| extern void l2cu_send_peer_echo_req(tL2C_LCB* p_lcb, uint8_t* p_data, |
| uint16_t data_len); |
| extern void l2cu_send_peer_echo_rsp(tL2C_LCB* p_lcb, uint8_t id, |
| uint8_t* p_data, uint16_t data_len); |
| extern void l2cu_send_peer_info_rsp(tL2C_LCB* p_lcb, uint8_t id, |
| uint16_t info_type); |
| extern void l2cu_reject_connection(tL2C_LCB* p_lcb, uint16_t remote_cid, |
| uint8_t rem_id, uint16_t result); |
| extern void l2cu_send_peer_info_req(tL2C_LCB* p_lcb, uint16_t 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(bool); |
| #endif |
| |
| extern void l2cu_send_peer_ble_par_req(tL2C_LCB* p_lcb, uint16_t min_int, |
| uint16_t max_int, uint16_t latency, |
| uint16_t timeout); |
| extern void l2cu_send_peer_ble_par_rsp(tL2C_LCB* p_lcb, uint16_t reason, |
| uint8_t rem_id); |
| extern void l2cu_reject_ble_connection(tL2C_LCB* p_lcb, uint8_t rem_id, |
| uint16_t result); |
| extern void l2cu_send_peer_ble_credit_based_conn_res(tL2C_CCB* p_ccb, |
| uint16_t 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_t credit_value); |
| extern void l2cu_send_peer_ble_credit_based_disconn_req(tL2C_CCB* p_ccb); |
| |
| extern bool l2cu_initialize_fixed_ccb(tL2C_LCB* p_lcb, uint16_t 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); |
| extern bool l2cu_is_ccb_active(tL2C_CCB* p_ccb); |
| |
| /* Functions provided by l2c_ucd.cc |
| *********************************** |
| */ |
| #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); |
| bool l2c_ucd_check_pending_info_req(tL2C_CCB* p_ccb); |
| bool 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); |
| bool 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); |
| bool l2c_ucd_check_rx_pkts(tL2C_LCB* p_lcb, BT_HDR* p_msg); |
| bool l2c_ucd_process_event(tL2C_CCB* p_ccb, uint16_t event, void* p_data); |
| #endif |
| |
| /* Functions provided for Broadcom Aware |
| *************************************** |
| */ |
| extern bool l2cu_check_feature_req(tL2C_LCB* p_lcb, uint8_t id, uint8_t* p_data, |
| uint16_t data_len); |
| extern void l2cu_check_feature_rsp(tL2C_LCB* p_lcb, uint8_t id, uint8_t* p_data, |
| uint16_t data_len); |
| extern void l2cu_send_feature_req(tL2C_CCB* p_ccb); |
| |
| extern tL2C_RCB* l2cu_allocate_rcb(uint16_t psm); |
| extern tL2C_RCB* l2cu_find_rcb_by_psm(uint16_t psm); |
| extern void l2cu_release_rcb(tL2C_RCB* p_rcb); |
| extern tL2C_RCB* l2cu_allocate_ble_rcb(uint16_t psm); |
| extern tL2C_RCB* l2cu_find_ble_rcb_by_psm(uint16_t psm); |
| |
| extern uint8_t 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 bool l2cu_lcb_disconnecting(void); |
| |
| extern bool l2cu_create_conn(tL2C_LCB* p_lcb, tBT_TRANSPORT transport); |
| extern bool l2cu_create_conn(tL2C_LCB* p_lcb, tBT_TRANSPORT transport, |
| uint8_t initiating_phys); |
| extern bool 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.cc |
| *********************************** |
| */ |
| extern bool l2c_link_hci_conn_req(BD_ADDR bd_addr); |
| extern bool l2c_link_hci_conn_comp(uint8_t status, uint16_t handle, |
| BD_ADDR p_bda); |
| extern bool l2c_link_hci_disc_comp(uint16_t handle, uint8_t reason); |
| extern bool l2c_link_hci_qos_violation(uint16_t handle); |
| extern void l2c_link_timeout(tL2C_LCB* p_lcb); |
| extern void l2c_info_resp_timer_timeout(void* data); |
| 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_t* p); |
| extern void l2c_link_process_num_completed_blocks(uint8_t controller_id, |
| uint8_t* p, uint16_t evt_len); |
| extern void l2c_link_processs_num_bufs(uint16_t num_lm_acl_bufs); |
| extern uint8_t l2c_link_pkts_rcvd(uint16_t* num_pkts, uint16_t* handles); |
| extern void l2c_link_role_changed(BD_ADDR bd_addr, uint8_t new_role, |
| uint8_t hci_status); |
| extern void l2c_link_sec_comp(BD_ADDR p_bda, tBT_TRANSPORT trasnport, |
| void* p_ref_data, uint8_t 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); |
| |
| extern void l2c_link_processs_ble_num_bufs(uint16_t num_lm_acl_bufs); |
| |
| #if (L2CAP_WAKE_PARKED_LINK == TRUE) |
| extern bool 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_t mask); |
| #endif |
| |
| /* Functions provided by l2c_csm.cc |
| *********************************** |
| */ |
| extern void l2c_csm_execute(tL2C_CCB* p_ccb, uint16_t event, void* p_data); |
| |
| extern void l2c_enqueue_peer_data(tL2C_CCB* p_ccb, BT_HDR* p_buf); |
| |
| /* Functions provided by l2c_fcr.cc |
| *********************************** |
| */ |
| 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_t function_code, |
| uint16_t pf_bit); |
| extern BT_HDR* l2c_fcr_clone_buf(BT_HDR* p_buf, uint16_t new_offset, |
| uint16_t no_of_bytes); |
| extern bool l2c_fcr_is_flow_controlled(tL2C_CCB* p_ccb); |
| extern BT_HDR* l2c_fcr_get_next_xmit_sdu_seg(tL2C_CCB* p_ccb, |
| uint16_t max_packet_length); |
| extern void l2c_fcr_start_timer(tL2C_CCB* p_ccb); |
| extern void l2c_lcc_proc_pdu(tL2C_CCB* p_ccb, BT_HDR* p_buf); |
| extern BT_HDR* l2c_lcc_get_next_xmit_sdu_seg(tL2C_CCB* p_ccb, |
| uint16_t max_packet_length); |
| |
| /* Configuration negotiation */ |
| extern uint8_t l2c_fcr_chk_chan_modes(tL2C_CCB* p_ccb); |
| extern bool 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 bool l2c_fcr_renegotiate_chan(tL2C_CCB* p_ccb, tL2CAP_CFG_INFO* p_cfg); |
| extern uint8_t 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); |
| |
| /* Functions provided by l2c_ble.cc |
| *********************************** |
| */ |
| extern bool l2cble_create_conn(tL2C_LCB* p_lcb); |
| extern void l2cble_process_sig_cmd(tL2C_LCB* p_lcb, uint8_t* p, |
| uint16_t pkt_len); |
| extern void l2cble_conn_comp(uint16_t handle, uint8_t role, BD_ADDR bda, |
| tBLE_ADDR_TYPE type, uint16_t conn_interval, |
| uint16_t conn_latency, uint16_t conn_timeout); |
| extern bool 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_t handle, uint8_t status, |
| uint16_t interval, uint16_t latency, |
| uint16_t timeout); |
| |
| extern void l2cble_credit_based_conn_req(tL2C_CCB* p_ccb); |
| extern void l2cble_credit_based_conn_res(tL2C_CCB* p_ccb, uint16_t result); |
| extern void l2cble_send_peer_disc_req(tL2C_CCB* p_ccb); |
| extern void l2cble_send_flow_control_credit(tL2C_CCB* p_ccb, |
| uint16_t credit_value); |
| extern bool l2ble_sec_access_req(BD_ADDR bd_addr, uint16_t psm, |
| bool is_originator, |
| tL2CAP_SEC_CBACK* p_callback, |
| void* p_ref_data); |
| |
| #if (BLE_LLT_INCLUDED == TRUE) |
| extern void l2cble_process_rc_param_request_evt(uint16_t handle, |
| uint16_t int_min, |
| uint16_t int_max, |
| uint16_t latency, |
| uint16_t 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_t fix_cid, |
| uint16_t tx_mtu); |
| extern void l2cble_process_data_length_change_event(uint16_t handle, |
| uint16_t tx_data_len, |
| uint16_t rx_data_len); |
| |
| extern void l2cu_process_fixed_disc_cback(tL2C_LCB* p_lcb); |
| |
| #endif |
