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Diffstat (limited to 'stack/l2cap/l2c_int.h')
| -rw-r--r-- | stack/l2cap/l2c_int.h | 771 |
1 files changed, 771 insertions, 0 deletions
diff --git a/stack/l2cap/l2c_int.h b/stack/l2cap/l2c_int.h new file mode 100644 index 0000000..609c825 --- /dev/null +++ b/stack/l2cap/l2c_int.h @@ -0,0 +1,771 @@ +/****************************************************************************** + * + * 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 "l2c_api.h" +#include "l2cdefs.h" +#include "gki.h" +#include "btm_api.h" + +#define L2CAP_MIN_MTU 48 /* Minimum acceptable MTU is 48 bytes */ + +/* 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 30 /* 30 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_BLE_LINK_CONNECT_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 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 */ + +/* Only compiled in when in test mode. Production devices must not include +*/ +#if L2CAP_CORRUPT_ERTM_PKTS == TRUE + +/* These are used for conformance and corruption testing only */ +typedef struct +{ + BOOLEAN in_use; /* TRUE if test in progress */ + UINT8 type; /* Type of test to run or turns off random test */ + UINT8 freq; /* One-shot or random */ + BOOLEAN is_rx; /* TRUE if incoming packets */ + UINT16 count; /* How many I-frames to drop in a row; used only with one-shot tests */ +} tL2C_FCR_TEST_CFG; + +typedef struct +{ + BOOLEAN in_use; /* TRUE if test in progress */ + UINT8 skip_sframe_count; /* Number of S-Frames to skip sending */ +} tL2C_FCR_CFM_TEST_CB; + +typedef struct +{ + tL2C_FCR_TEST_CFG cfg; /* Current corruption test configuration */ + tL2C_FCR_CFM_TEST_CB cfm; /* Conformance test structure */ +} tL2C_FCR_TEST_CB; + +#endif /* L2CAP_CORRUPT_ERTM_PKTS == TRUE */ + +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 */ + BUFFER_Q waiting_for_ack_q; /* Buffers sent and waiting for peer to ack */ + BUFFER_Q srej_rcv_hold_q; /* Buffers rcvd but held pending SREJ rsp */ + BUFFER_Q 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 + +#if L2CAP_CORRUPT_ERTM_PKTS == TRUE + tL2C_FCR_TEST_CB test_cb; /* Used for SVT and UPF testing */ +#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; + + +/* 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 */ + + 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 */ + +#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 */ + + BUFFER_Q 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 + +} 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; + + TIMER_LIST_ENT timer_entry; /* Timer list entry for timeout evt */ + UINT16 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 */ + TIMER_LIST_ENT info_timer_entry; /* Timer entry for info resp timeout evt */ + BD_ADDR remote_bd_addr; /* The BD address of the remote */ + + UINT8 link_role; /* Master or slave */ + UINT8 id; + 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 */ + BUFFER_Q link_xmit_data_q; /* 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 */ + BUFFER_Q ucd_out_sec_pending_q; /* Security pending outgoing UCD packet */ + BUFFER_Q ucd_in_sec_pending_q; /* Security pending incoming UCD packet */ +#endif + +#if (L2CAP_HOST_FLOW_CTRL == TRUE) + UINT16 link_pkts_unacked; /* Packets received but not acked */ + UINT16 link_ack_thresh; /* Threshold at which to ack pkts */ +#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 + +#if (BLE_INCLUDED == TRUE) + BOOLEAN is_ble_link; + tBLE_ADDR_TYPE ble_addr_type; + +#define UPD_ENABLED 0 /* If peer requests update, we will change params */ +#define UPD_DISABLED 1 /* application requested not to update */ +#define UPD_PENDING 2 /* while updates are disabled, peer requested new parameters */ +#define UPD_UPDATED 3 /* peer updated connection parameters */ + UINT8 upd_disabled; + + UINT16 min_interval; /* parameters as requested by peripheral */ + UINT16 max_interval; + UINT16 latency; + UINT16 timeout; + +#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; + + 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 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 */ + + BUFFER_Q rcv_hold_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) + BOOLEAN is_ble_connecting; + BD_ADDR ble_connecting_bda; + UINT16 controller_le_xmit_window; /* Total ACL window for all links */ + UINT16 num_lm_ble_bufs; /* # of ACL buffers on controller */ +#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) +L2C_API extern tL2C_CB l2cb; +#else +L2C_API extern tL2C_CB *l2c_cb_ptr; +#define l2cb (*l2c_cb_ptr) +#endif + + +/* Functions provided by l2c_main.c +************************************ +*/ +extern void l2c_init (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); +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); +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_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid); +extern void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask); + +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); +#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 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 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); +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, 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 ((BTM_PWR_MGR_INCLUDED == TRUE) && 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 +#define L2C_LINK_CHECK_POWER_MODE(x) (FALSE) +#endif + +#if L2CAP_CONFORMANCE_TESTING == TRUE +/* Used only for conformance testing */ +L2C_API 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); + +L2C_API extern BT_HDR *l2cap_link_chk_pkt_start(BT_HDR *); /* Called at start of rcv to check L2CAP segmentation */ +L2C_API extern BOOLEAN l2cap_link_chk_pkt_end (void); /* Called at end of rcv to check L2CAP segmentation */ + +L2C_API 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, UINT8 pool); +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); + +/* 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); + +#endif + +#ifdef __cplusplus +} +#endif + +#endif |