| /****************************************************************************** |
| * |
| * Copyright (C) 2010-2014 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 LLCP internal definitions |
| * |
| ******************************************************************************/ |
| #ifndef LLCP_INT_H |
| #define LLCP_INT_H |
| |
| #include "llcp_api.h" |
| #include "nfc_api.h" |
| |
| /* |
| ** LLCP link states |
| */ |
| enum { |
| LLCP_LINK_STATE_DEACTIVATED, /* llcp link is deactivated */ |
| LLCP_LINK_STATE_ACTIVATED, /* llcp link has been activated */ |
| LLCP_LINK_STATE_DEACTIVATING, /* llcp link is deactivating */ |
| LLCP_LINK_STATE_ACTIVATION_FAILED /* llcp link activation was failed */ |
| }; |
| typedef uint8_t tLLCP_LINK_STATE; |
| |
| /* |
| ** LLCP Symmetric state |
| */ |
| |
| #define LLCP_LINK_SYMM_LOCAL_XMIT_NEXT 0 |
| #define LLCP_LINK_SYMM_REMOTE_XMIT_NEXT 1 |
| |
| /* |
| ** LLCP internal flags |
| */ |
| /* Received any LLC PDU in activated state */ |
| #define LLCP_LINK_FLAGS_RX_ANY_LLC_PDU 0x01 |
| |
| /* |
| ** LLCP link control block |
| */ |
| typedef struct { |
| tLLCP_LINK_STATE link_state; /* llcp link state */ |
| tLLCP_LINK_CBACK* |
| p_link_cback; /* callback function to report llcp link status */ |
| uint16_t wks; /* well-known service bit-map */ |
| |
| bool is_initiator; /* TRUE if initiator role */ |
| bool is_sending_data; /* TRUE if llcp_link_check_send_data() is excuting */ |
| uint8_t flags; /* LLCP internal flags */ |
| bool received_first_packet; /* TRUE if a packet has been received from remote |
| */ |
| uint8_t agreed_major_version; /* llcp major version used in activated state */ |
| uint8_t agreed_minor_version; /* llcp minor version used in activated state */ |
| |
| uint8_t peer_version; /* llcp version of peer device */ |
| uint16_t peer_miu; /* link MIU of peer device */ |
| uint16_t peer_wks; /* WKS of peer device */ |
| uint16_t peer_lto; /* link timeout of peer device in ms */ |
| uint8_t peer_opt; /* Option field of peer device */ |
| uint16_t effective_miu; /* MIU to send PDU in activated state */ |
| |
| TIMER_LIST_ENT timer; /* link timer for LTO and SYMM response */ |
| uint8_t symm_state; /* state of symmectric procedure */ |
| bool ll_served; /* TRUE if last transmisstion was for UI */ |
| uint8_t ll_idx; /* for scheduler of logical link connection */ |
| uint8_t dl_idx; /* for scheduler of data link connection */ |
| |
| TIMER_LIST_ENT inact_timer; /* inactivity timer */ |
| uint16_t inact_timeout; /* inactivity timeout in ms */ |
| |
| uint8_t link_deact_reason; /* reason of LLCP link deactivated */ |
| |
| BUFFER_Q sig_xmit_q; /* tx signaling PDU queue */ |
| |
| /* runtime configuration parameters */ |
| uint16_t local_link_miu; /* Maximum Information Unit */ |
| uint8_t local_opt; /* Option parameter */ |
| uint8_t local_wt; /* Response Waiting Time Index */ |
| uint16_t local_lto; /* Local Link Timeout */ |
| uint16_t inact_timeout_init; /* Inactivity Timeout as initiator role */ |
| uint16_t inact_timeout_target; /* Inactivity Timeout as target role */ |
| uint16_t symm_delay; /* Delay SYMM response */ |
| uint16_t data_link_timeout; /* data link conneciton timeout */ |
| uint16_t delay_first_pdu_timeout; /* delay timeout to send first PDU as |
| initiator */ |
| |
| } tLLCP_LCB; |
| |
| /* |
| ** LLCP Application's registration control block on service access point (SAP) |
| */ |
| |
| typedef struct { |
| uint8_t link_type; /* logical link and/or data link */ |
| char* p_service_name; /* GKI buffer containing service name */ |
| tLLCP_APP_CBACK* p_app_cback; /* application's callback pointer */ |
| |
| BUFFER_Q ui_xmit_q; /* UI PDU queue for transmitting */ |
| BUFFER_Q ui_rx_q; /* UI PDU queue for receiving */ |
| bool is_ui_tx_congested; /* TRUE if transmitting UI PDU is congested */ |
| |
| } tLLCP_APP_CB; |
| |
| /* |
| ** LLCP data link connection states |
| */ |
| enum { |
| LLCP_DLC_STATE_IDLE, /* initial state */ |
| LLCP_DLC_STATE_W4_REMOTE_RESP, /* waiting for connection confirm from peer */ |
| LLCP_DLC_STATE_W4_LOCAL_RESP, /* waiting for connection confirm from upper |
| layer */ |
| LLCP_DLC_STATE_CONNECTED, /* data link connection has been established */ |
| LLCP_DLC_STATE_W4_REMOTE_DM /* waiting for disconnection confirm from peer */ |
| }; |
| typedef uint8_t tLLCP_DLC_STATE; |
| |
| /* |
| ** LLCP data link connection events |
| */ |
| enum { |
| LLCP_DLC_EVENT_API_CONNECT_REQ, /* connection request from upper layer */ |
| LLCP_DLC_EVENT_API_CONNECT_CFM, /* connection confirm from upper layer */ |
| LLCP_DLC_EVENT_API_CONNECT_REJECT, /* connection reject from upper layer */ |
| LLCP_DLC_EVENT_PEER_CONNECT_IND, /* connection request from peer */ |
| LLCP_DLC_EVENT_PEER_CONNECT_CFM, /* connection confirm from peer */ |
| |
| LLCP_DLC_EVENT_API_DATA_REQ, /* data packet from upper layer */ |
| LLCP_DLC_EVENT_PEER_DATA_IND, /* data packet from peer */ |
| |
| LLCP_DLC_EVENT_API_DISCONNECT_REQ, /* disconnect request from upper layer */ |
| LLCP_DLC_EVENT_PEER_DISCONNECT_IND, /* disconnect request from peer */ |
| LLCP_DLC_EVENT_PEER_DISCONNECT_RESP, /* disconnect response from peer */ |
| |
| LLCP_DLC_EVENT_FRAME_ERROR, /* received erroneous frame from peer */ |
| LLCP_DLC_EVENT_LINK_ERROR, /* llcp link has been deactivated */ |
| |
| LLCP_DLC_EVENT_TIMEOUT /* timeout event */ |
| }; |
| typedef uint8_t tLLCP_DLC_EVENT; |
| |
| /* |
| ** LLCP data link connection control block |
| */ |
| |
| /* send DISC when tx queue is empty */ |
| #define LLCP_DATA_LINK_FLAG_PENDING_DISC 0x01 |
| /* send RR/RNR with valid sequence */ |
| #define LLCP_DATA_LINK_FLAG_PENDING_RR_RNR 0x02 |
| /* notify upper later when tx complete */ |
| #define LLCP_DATA_LINK_FLAG_NOTIFY_TX_DONE 0x04 |
| |
| typedef struct { |
| tLLCP_DLC_STATE state; /* data link connection state */ |
| uint8_t flags; /* specific action flags */ |
| tLLCP_APP_CB* p_app_cb; /* pointer of application registration */ |
| TIMER_LIST_ENT timer; /* timer for connection complete */ |
| |
| uint8_t local_sap; /* SAP of local end point */ |
| uint16_t local_miu; /* MIU of local SAP */ |
| uint8_t local_rw; /* RW of local SAP */ |
| bool local_busy; /* TRUE if local SAP is busy */ |
| |
| uint8_t remote_sap; /* SAP of remote end point */ |
| uint16_t remote_miu; /* MIU of remote SAP */ |
| uint8_t remote_rw; /* RW of remote SAP */ |
| bool remote_busy; /* TRUE if remote SAP is busy */ |
| |
| uint8_t next_tx_seq; /* V(S), send state variable */ |
| uint8_t rcvd_ack_seq; /* V(SA), send ack state variable */ |
| uint8_t next_rx_seq; /* V(R), receive state variable */ |
| uint8_t sent_ack_seq; /* V(RA), receive ack state variable */ |
| |
| BUFFER_Q i_xmit_q; /* tx queue of I PDU */ |
| bool is_tx_congested; /* TRUE if tx I PDU is congested */ |
| |
| BUFFER_Q i_rx_q; /* rx queue of I PDU */ |
| bool is_rx_congested; /* TRUE if rx I PDU is congested */ |
| uint8_t num_rx_i_pdu; /* number of I PDU in rx queue */ |
| uint8_t rx_congest_threshold; /* dynamic congest threshold for rx I PDU */ |
| |
| } tLLCP_DLCB; |
| |
| /* |
| ** LLCP service discovery control block |
| */ |
| |
| typedef struct { |
| uint8_t tid; /* transaction ID */ |
| tLLCP_SDP_CBACK* p_cback; /* callback function for service discovery */ |
| } tLLCP_SDP_TRANSAC; |
| |
| typedef struct { |
| uint8_t next_tid; /* next TID to use */ |
| tLLCP_SDP_TRANSAC transac[LLCP_MAX_SDP_TRANSAC]; /* active SDP transactions */ |
| NFC_HDR* p_snl; /* buffer for SNL PDU */ |
| } tLLCP_SDP_CB; |
| |
| /* |
| ** LLCP control block |
| */ |
| |
| typedef struct { |
| tLLCP_SDP_CB sdp_cb; /* SDP control block */ |
| tLLCP_LCB lcb; /* LLCP link control block */ |
| tLLCP_APP_CB wks_cb[LLCP_MAX_WKS]; /* Application's registration for |
| well-known services */ |
| tLLCP_APP_CB server_cb |
| [LLCP_MAX_SERVER]; /* Application's registration for SDP services */ |
| tLLCP_APP_CB |
| client_cb[LLCP_MAX_CLIENT]; /* Application's registration for client */ |
| tLLCP_DLCB dlcb[LLCP_MAX_DATA_LINK]; /* Data link connection control block */ |
| |
| uint8_t max_num_ll_tx_buff; /* max number of tx UI PDU in queue */ |
| uint8_t max_num_tx_buff; /* max number of tx UI/I PDU in queue */ |
| |
| uint8_t num_logical_data_link; /* number of logical data link */ |
| uint8_t |
| num_data_link_connection; /* number of established data link connection */ |
| |
| /* these two thresholds (number of tx UI PDU) are dynamically adjusted based |
| * on number of logical links */ |
| uint8_t |
| ll_tx_congest_start; /* congest start threshold for each logical link*/ |
| uint8_t ll_tx_congest_end; /* congest end threshold for each logical link */ |
| |
| uint8_t total_tx_ui_pdu; /* total number of tx UI PDU in all of ui_xmit_q*/ |
| uint8_t total_tx_i_pdu; /* total number of tx I PDU in all of i_xmit_q */ |
| bool overall_tx_congested; /* TRUE if tx link is congested */ |
| |
| /* start point of uncongested status notification is in round robin */ |
| uint8_t ll_tx_uncongest_ntf_start_sap; /* next start of logical data link */ |
| uint8_t |
| dl_tx_uncongest_ntf_start_idx; /* next start of data link connection */ |
| |
| /* |
| ** when overall rx link congestion starts, RNR is sent to remote end point |
| ** of data link connection while rx link is congested, UI PDU is discarded. |
| */ |
| uint8_t num_rx_buff; /* reserved number of rx UI/I PDU in queue */ |
| uint8_t |
| overall_rx_congest_start; /* threshold of overall rx congestion start */ |
| uint8_t overall_rx_congest_end; /* threshold of overall rx congestion end */ |
| uint8_t max_num_ll_rx_buff; /* max number of rx UI PDU in queue */ |
| |
| /* |
| ** threshold (number of rx UI PDU) is dynamically adjusted based on number |
| ** of logical links when number of rx UI PDU is more than |
| ** ll_rx_congest_start, the oldest UI PDU is discarded |
| */ |
| uint8_t ll_rx_congest_start; /* rx congest start threshold for each logical |
| link */ |
| |
| uint8_t total_rx_ui_pdu; /* total number of rx UI PDU in all of ui_rx_q */ |
| uint8_t total_rx_i_pdu; /* total number of rx I PDU in all of i_rx_q */ |
| bool overall_rx_congested; /* TRUE if overall rx link is congested */ |
| tLLCP_DTA_CBACK* p_dta_cback; /* callback to notify DTA when respoding SNL */ |
| bool dta_snl_resp; /* TRUE if need to notify DTA when respoding SNL*/ |
| } tLLCP_CB; |
| |
| #if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */ |
| |
| typedef struct { |
| uint8_t version; |
| uint16_t wks; |
| } tLLCP_TEST_PARAMS; |
| |
| #endif |
| |
| /* |
| ** LLCP global data |
| */ |
| |
| extern tLLCP_CB llcp_cb; |
| |
| /* |
| ** Functions provided by llcp_main.c |
| */ |
| void llcp_init(void); |
| void llcp_cleanup(void); |
| void llcp_process_timeout(TIMER_LIST_ENT* p_tle); |
| |
| /* |
| ** Functions provided by llcp_link.c |
| */ |
| tLLCP_STATUS llcp_link_activate(tLLCP_ACTIVATE_CONFIG* p_config); |
| void llcp_link_process_link_timeout(void); |
| void llcp_link_deactivate(uint8_t reason); |
| |
| void llcp_link_check_send_data(void); |
| void llcp_link_connection_cback(uint8_t conn_id, tNFC_CONN_EVT event, |
| tNFC_CONN* p_data); |
| |
| /* |
| ** Functions provided by llcp_util.c |
| */ |
| void llcp_util_adjust_ll_congestion(void); |
| void llcp_util_adjust_dl_rx_congestion(void); |
| void llcp_util_check_rx_congested_status(void); |
| bool llcp_util_parse_link_params(uint16_t length, uint8_t* p_bytes); |
| tLLCP_STATUS llcp_util_send_ui(uint8_t ssap, uint8_t dsap, |
| tLLCP_APP_CB* p_app_cb, NFC_HDR* p_msg); |
| void llcp_util_send_disc(uint8_t dsap, uint8_t ssap); |
| tLLCP_DLCB* llcp_util_allocate_data_link(uint8_t reg_sap, uint8_t remote_sap); |
| void llcp_util_deallocate_data_link(tLLCP_DLCB* p_dlcb); |
| tLLCP_STATUS llcp_util_send_connect(tLLCP_DLCB* p_dlcb, |
| tLLCP_CONNECTION_PARAMS* p_params); |
| tLLCP_STATUS llcp_util_parse_connect(uint8_t* p_bytes, uint16_t length, |
| tLLCP_CONNECTION_PARAMS* p_params); |
| tLLCP_STATUS llcp_util_send_cc(tLLCP_DLCB* p_dlcb, |
| tLLCP_CONNECTION_PARAMS* p_params); |
| tLLCP_STATUS llcp_util_parse_cc(uint8_t* p_bytes, uint16_t length, |
| uint16_t* p_miu, uint8_t* p_rw); |
| void llcp_util_send_dm(uint8_t dsap, uint8_t ssap, uint8_t reason); |
| void llcp_util_build_info_pdu(tLLCP_DLCB* p_dlcb, NFC_HDR* p_msg); |
| tLLCP_STATUS llcp_util_send_frmr(tLLCP_DLCB* p_dlcb, uint8_t flags, |
| uint8_t ptype, uint8_t sequence); |
| void llcp_util_send_rr_rnr(tLLCP_DLCB* p_dlcb); |
| tLLCP_APP_CB* llcp_util_get_app_cb(uint8_t sap); |
| /* |
| ** Functions provided by llcp_dlc.c |
| */ |
| tLLCP_STATUS llcp_dlsm_execute(tLLCP_DLCB* p_dlcb, tLLCP_DLC_EVENT event, |
| void* p_data); |
| tLLCP_DLCB* llcp_dlc_find_dlcb_by_sap(uint8_t local_sap, uint8_t remote_sap); |
| void llcp_dlc_flush_q(tLLCP_DLCB* p_dlcb); |
| void llcp_dlc_proc_i_pdu(uint8_t dsap, uint8_t ssap, uint16_t i_pdu_length, |
| uint8_t* p_i_pdu, NFC_HDR* p_msg); |
| void llcp_dlc_proc_rx_pdu(uint8_t dsap, uint8_t ptype, uint8_t ssap, |
| uint16_t length, uint8_t* p_data); |
| void llcp_dlc_check_to_send_rr_rnr(void); |
| bool llcp_dlc_is_rw_open(tLLCP_DLCB* p_dlcb); |
| NFC_HDR* llcp_dlc_get_next_pdu(tLLCP_DLCB* p_dlcb); |
| uint16_t llcp_dlc_get_next_pdu_length(tLLCP_DLCB* p_dlcb); |
| |
| /* |
| ** Functions provided by llcp_sdp.c |
| */ |
| void llcp_sdp_proc_data(tLLCP_SAP_CBACK_DATA* p_data); |
| tLLCP_STATUS llcp_sdp_send_sdreq(uint8_t tid, char* p_name); |
| uint8_t llcp_sdp_get_sap_by_name(char* p_name, uint8_t length); |
| tLLCP_STATUS llcp_sdp_proc_snl(uint16_t sdu_length, uint8_t* p); |
| void llcp_sdp_check_send_snl(void); |
| void llcp_sdp_proc_deactivation(void); |
| #endif |
