1 /****************************************************************************** 2 * 3 * Copyright (C) 2010-2014 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 20 /****************************************************************************** 21 * 22 * This file contains LLCP internal definitions 23 * 24 ******************************************************************************/ 25 #ifndef LLCP_INT_H 26 #define LLCP_INT_H 27 28 #include "llcp_api.h" 29 #include "nfc_api.h" 30 31 /* 32 ** LLCP link states 33 */ 34 enum 35 { 36 LLCP_LINK_STATE_DEACTIVATED, /* llcp link is deactivated */ 37 LLCP_LINK_STATE_ACTIVATED, /* llcp link has been activated */ 38 LLCP_LINK_STATE_DEACTIVATING, /* llcp link is deactivating */ 39 LLCP_LINK_STATE_ACTIVATION_FAILED /* llcp link activation was failed */ 40 }; 41 typedef UINT8 tLLCP_LINK_STATE; 42 43 /* 44 ** LLCP Symmetric state 45 */ 46 47 #define LLCP_LINK_SYMM_LOCAL_XMIT_NEXT 0 48 #define LLCP_LINK_SYMM_REMOTE_XMIT_NEXT 1 49 50 /* 51 ** LLCP internal flags 52 */ 53 #define LLCP_LINK_FLAGS_RX_ANY_LLC_PDU 0x01 /* Received any LLC PDU in activated state */ 54 55 /* 56 ** LLCP link control block 57 */ 58 typedef struct 59 { 60 tLLCP_LINK_STATE link_state; /* llcp link state */ 61 tLLCP_LINK_CBACK *p_link_cback; /* callback function to report llcp link status */ 62 UINT16 wks; /* well-known service bit-map */ 63 64 BOOLEAN is_initiator; /* TRUE if initiator role */ 65 BOOLEAN is_sending_data; /* TRUE if llcp_link_check_send_data() is excuting */ 66 UINT8 flags; /* LLCP internal flags */ 67 BOOLEAN received_first_packet; /* TRUE if a packet has been received from remote */ 68 UINT8 agreed_major_version; /* llcp major version used in activated state */ 69 UINT8 agreed_minor_version; /* llcp minor version used in activated state */ 70 71 UINT8 peer_version; /* llcp version of peer device */ 72 UINT16 peer_miu; /* link MIU of peer device */ 73 UINT16 peer_wks; /* WKS of peer device */ 74 UINT16 peer_lto; /* link timeout of peer device in ms */ 75 UINT8 peer_opt; /* Option field of peer device */ 76 UINT16 effective_miu; /* MIU to send PDU in activated state */ 77 78 TIMER_LIST_ENT timer; /* link timer for LTO and SYMM response */ 79 UINT8 symm_state; /* state of symmectric procedure */ 80 BOOLEAN ll_served; /* TRUE if last transmisstion was for UI */ 81 UINT8 ll_idx; /* for scheduler of logical link connection */ 82 UINT8 dl_idx; /* for scheduler of data link connection */ 83 84 TIMER_LIST_ENT inact_timer; /* inactivity timer */ 85 UINT16 inact_timeout; /* inactivity timeout in ms */ 86 87 UINT8 link_deact_reason; /* reason of LLCP link deactivated */ 88 89 BUFFER_Q sig_xmit_q; /* tx signaling PDU queue */ 90 91 /* runtime configuration parameters */ 92 UINT16 local_link_miu; /* Maximum Information Unit */ 93 UINT8 local_opt; /* Option parameter */ 94 UINT8 local_wt; /* Response Waiting Time Index */ 95 UINT16 local_lto; /* Local Link Timeout */ 96 UINT16 inact_timeout_init; /* Inactivity Timeout as initiator role */ 97 UINT16 inact_timeout_target; /* Inactivity Timeout as target role */ 98 UINT16 symm_delay; /* Delay SYMM response */ 99 UINT16 data_link_timeout; /* data link conneciton timeout */ 100 UINT16 delay_first_pdu_timeout;/* delay timeout to send first PDU as initiator */ 101 102 } tLLCP_LCB; 103 104 /* 105 ** LLCP Application's registration control block on service access point (SAP) 106 */ 107 108 typedef struct 109 { 110 UINT8 link_type; /* logical link and/or data link */ 111 UINT8 *p_service_name; /* GKI buffer containing service name */ 112 tLLCP_APP_CBACK *p_app_cback; /* application's callback pointer */ 113 114 BUFFER_Q ui_xmit_q; /* UI PDU queue for transmitting */ 115 BUFFER_Q ui_rx_q; /* UI PDU queue for receiving */ 116 BOOLEAN is_ui_tx_congested; /* TRUE if transmitting UI PDU is congested */ 117 118 } tLLCP_APP_CB; 119 120 /* 121 ** LLCP data link connection states 122 */ 123 enum 124 { 125 LLCP_DLC_STATE_IDLE, /* initial state */ 126 LLCP_DLC_STATE_W4_REMOTE_RESP, /* waiting for connection confirm from peer */ 127 LLCP_DLC_STATE_W4_LOCAL_RESP, /* waiting for connection confirm from upper layer */ 128 LLCP_DLC_STATE_CONNECTED, /* data link connection has been established */ 129 LLCP_DLC_STATE_W4_REMOTE_DM, /* waiting for disconnection confirm from peer */ 130 LLCP_DLC_STATE_MAX 131 }; 132 typedef UINT8 tLLCP_DLC_STATE; 133 134 /* 135 ** LLCP data link connection events 136 */ 137 enum 138 { 139 LLCP_DLC_EVENT_API_CONNECT_REQ, /* connection request from upper layer */ 140 LLCP_DLC_EVENT_API_CONNECT_CFM, /* connection confirm from upper layer */ 141 LLCP_DLC_EVENT_API_CONNECT_REJECT, /* connection reject from upper layer */ 142 LLCP_DLC_EVENT_PEER_CONNECT_IND, /* connection request from peer */ 143 LLCP_DLC_EVENT_PEER_CONNECT_CFM, /* connection confirm from peer */ 144 145 LLCP_DLC_EVENT_API_DATA_REQ, /* data packet from upper layer */ 146 LLCP_DLC_EVENT_PEER_DATA_IND, /* data packet from peer */ 147 148 LLCP_DLC_EVENT_API_DISCONNECT_REQ, /* disconnect request from upper layer */ 149 LLCP_DLC_EVENT_PEER_DISCONNECT_IND, /* disconnect request from peer */ 150 LLCP_DLC_EVENT_PEER_DISCONNECT_RESP, /* disconnect response from peer */ 151 152 LLCP_DLC_EVENT_FRAME_ERROR, /* received erroneous frame from peer */ 153 LLCP_DLC_EVENT_LINK_ERROR, /* llcp link has been deactivated */ 154 155 LLCP_DLC_EVENT_TIMEOUT /* timeout event */ 156 }; 157 typedef UINT8 tLLCP_DLC_EVENT; 158 159 /* 160 ** LLCP data link connection control block 161 */ 162 163 #define LLCP_DATA_LINK_FLAG_PENDING_DISC 0x01 /* send DISC when tx queue is empty */ 164 #define LLCP_DATA_LINK_FLAG_PENDING_RR_RNR 0x02 /* send RR/RNR with valid sequence */ 165 #define LLCP_DATA_LINK_FLAG_NOTIFY_TX_DONE 0x04 /* notify upper later when tx complete */ 166 167 168 typedef struct 169 { 170 tLLCP_DLC_STATE state; /* data link connection state */ 171 UINT8 flags; /* specific action flags */ 172 tLLCP_APP_CB *p_app_cb; /* pointer of application registration */ 173 TIMER_LIST_ENT timer; /* timer for connection complete */ 174 175 UINT8 local_sap; /* SAP of local end point */ 176 UINT16 local_miu; /* MIU of local SAP */ 177 UINT8 local_rw; /* RW of local SAP */ 178 BOOLEAN local_busy; /* TRUE if local SAP is busy */ 179 180 UINT8 remote_sap; /* SAP of remote end point */ 181 UINT16 remote_miu; /* MIU of remote SAP */ 182 UINT8 remote_rw; /* RW of remote SAP */ 183 BOOLEAN remote_busy; /* TRUE if remote SAP is busy */ 184 185 UINT8 next_tx_seq; /* V(S), send state variable */ 186 UINT8 rcvd_ack_seq; /* V(SA), send ack state variable */ 187 UINT8 next_rx_seq; /* V(R), receive state variable */ 188 UINT8 sent_ack_seq; /* V(RA), receive ack state variable */ 189 190 BUFFER_Q i_xmit_q; /* tx queue of I PDU */ 191 BOOLEAN is_tx_congested; /* TRUE if tx I PDU is congested */ 192 193 BUFFER_Q i_rx_q; /* rx queue of I PDU */ 194 BOOLEAN is_rx_congested; /* TRUE if rx I PDU is congested */ 195 UINT8 num_rx_i_pdu; /* number of I PDU in rx queue */ 196 UINT8 rx_congest_threshold; /* dynamic congest threshold for rx I PDU */ 197 198 } tLLCP_DLCB; 199 200 /* 201 ** LLCP service discovery control block 202 */ 203 204 typedef struct 205 { 206 UINT8 tid; /* transaction ID */ 207 tLLCP_SDP_CBACK *p_cback; /* callback function for service discovery */ 208 } tLLCP_SDP_TRANSAC; 209 210 typedef struct 211 { 212 UINT8 next_tid; /* next TID to use */ 213 tLLCP_SDP_TRANSAC transac[LLCP_MAX_SDP_TRANSAC]; /* active SDP transactions */ 214 BT_HDR *p_snl; /* buffer for SNL PDU */ 215 } tLLCP_SDP_CB; 216 217 218 /* 219 ** LLCP control block 220 */ 221 222 typedef struct 223 { 224 UINT8 trace_level; /* LLCP trace level */ 225 226 tLLCP_SDP_CB sdp_cb; /* SDP control block */ 227 tLLCP_LCB lcb; /* LLCP link control block */ 228 tLLCP_APP_CB wks_cb[LLCP_MAX_WKS]; /* Application's registration for well-known services */ 229 tLLCP_APP_CB server_cb[LLCP_MAX_SERVER]; /* Application's registration for SDP services */ 230 tLLCP_APP_CB client_cb[LLCP_MAX_CLIENT]; /* Application's registration for client */ 231 tLLCP_DLCB dlcb[LLCP_MAX_DATA_LINK]; /* Data link connection control block */ 232 233 UINT8 max_num_ll_tx_buff; /* max number of tx UI PDU in queue */ 234 UINT8 max_num_tx_buff; /* max number of tx UI/I PDU in queue */ 235 236 UINT8 num_logical_data_link; /* number of logical data link */ 237 UINT8 num_data_link_connection; /* number of established data link connection */ 238 239 /* these two thresholds (number of tx UI PDU) are dynamically adjusted based on number of logical links */ 240 UINT8 ll_tx_congest_start; /* congest start threshold for each logical link*/ 241 UINT8 ll_tx_congest_end; /* congest end threshold for each logical link */ 242 243 UINT8 total_tx_ui_pdu; /* total number of tx UI PDU in all of ui_xmit_q*/ 244 UINT8 total_tx_i_pdu; /* total number of tx I PDU in all of i_xmit_q */ 245 BOOLEAN overall_tx_congested; /* TRUE if tx link is congested */ 246 247 /* start point of uncongested status notification is in round robin */ 248 UINT8 ll_tx_uncongest_ntf_start_sap; /* next start of logical data link */ 249 UINT8 dl_tx_uncongest_ntf_start_idx; /* next start of data link connection */ 250 251 /* 252 ** when overall rx link congestion starts, RNR is sent to remote end point of data link connection 253 ** while rx link is congested, UI PDU is discarded. 254 */ 255 UINT8 num_rx_buff; /* reserved number of rx UI/I PDU in queue */ 256 UINT8 overall_rx_congest_start; /* threshold of overall rx congestion start */ 257 UINT8 overall_rx_congest_end; /* threshold of overall rx congestion end */ 258 UINT8 max_num_ll_rx_buff; /* max number of rx UI PDU in queue */ 259 260 /* 261 ** threshold (number of rx UI PDU) is dynamically adjusted based on number of logical links 262 ** when number of rx UI PDU is more than ll_rx_congest_start, the oldest UI PDU is discarded 263 */ 264 UINT8 ll_rx_congest_start; /* rx congest start threshold for each logical link */ 265 266 UINT8 total_rx_ui_pdu; /* total number of rx UI PDU in all of ui_rx_q */ 267 UINT8 total_rx_i_pdu; /* total number of rx I PDU in all of i_rx_q */ 268 BOOLEAN overall_rx_congested; /* TRUE if overall rx link is congested */ 269 } tLLCP_CB; 270 271 #if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */ 272 273 typedef struct { 274 UINT8 version; 275 UINT16 wks; 276 } tLLCP_TEST_PARAMS; 277 278 #endif 279 280 #ifdef __cplusplus 281 extern "C" { 282 #endif 283 284 285 /* 286 ** LLCP global data 287 */ 288 289 #if (!defined LLCP_DYNAMIC_MEMORY) || (LLCP_DYNAMIC_MEMORY == FALSE) 290 LLCP_API extern tLLCP_CB llcp_cb; 291 #else 292 LLCP_API extern tLLCP_CB *llcp_cb_ptr; 293 #define llcp_cb (*llcp_cb_ptr) 294 #endif 295 296 /* 297 ** Functions provided by llcp_main.c 298 */ 299 void llcp_init (void); 300 void llcp_cleanup (void); 301 void llcp_process_timeout (TIMER_LIST_ENT *p_tle); 302 303 /* 304 ** Functions provided by llcp_link.c 305 */ 306 tLLCP_STATUS llcp_link_activate (tLLCP_ACTIVATE_CONFIG *p_config); 307 void llcp_link_process_link_timeout (void); 308 void llcp_link_deactivate (UINT8 reason); 309 310 void llcp_link_check_send_data (void); 311 void llcp_link_connection_cback (UINT8 conn_id, tNFC_CONN_EVT event, tNFC_CONN *p_data); 312 313 /* 314 ** Functions provided by llcp_util.c 315 */ 316 void llcp_util_adjust_ll_congestion (void); 317 void llcp_util_adjust_dl_rx_congestion (void); 318 void llcp_util_check_rx_congested_status (void); 319 BOOLEAN llcp_util_parse_link_params (UINT16 length, UINT8 *p_bytes); 320 tLLCP_STATUS llcp_util_send_ui (UINT8 ssap, UINT8 dsap, tLLCP_APP_CB *p_app_cb, BT_HDR *p_msg); 321 void llcp_util_send_disc (UINT8 dsap, UINT8 ssap); 322 tLLCP_DLCB *llcp_util_allocate_data_link (UINT8 reg_sap, UINT8 remote_sap); 323 void llcp_util_deallocate_data_link (tLLCP_DLCB *p_dlcb); 324 tLLCP_STATUS llcp_util_send_connect (tLLCP_DLCB *p_dlcb, tLLCP_CONNECTION_PARAMS *p_params); 325 tLLCP_STATUS llcp_util_parse_connect (UINT8 *p_bytes, UINT16 length, tLLCP_CONNECTION_PARAMS *p_params); 326 tLLCP_STATUS llcp_util_send_cc (tLLCP_DLCB *p_dlcb, tLLCP_CONNECTION_PARAMS *p_params); 327 tLLCP_STATUS llcp_util_parse_cc (UINT8 *p_bytes, UINT16 length, UINT16 *p_miu, UINT8 *p_rw); 328 void llcp_util_send_dm (UINT8 dsap, UINT8 ssap, UINT8 reason); 329 void llcp_util_build_info_pdu (tLLCP_DLCB *p_dlcb, BT_HDR *p_msg); 330 tLLCP_STATUS llcp_util_send_frmr (tLLCP_DLCB *p_dlcb, UINT8 flags, UINT8 ptype, UINT8 sequence); 331 void llcp_util_send_rr_rnr (tLLCP_DLCB *p_dlcb); 332 tLLCP_APP_CB *llcp_util_get_app_cb (UINT8 sap); 333 /* 334 ** Functions provided by llcp_dlc.c 335 */ 336 tLLCP_STATUS llcp_dlsm_execute (tLLCP_DLCB *p_dlcb, tLLCP_DLC_EVENT event, void *p_data); 337 tLLCP_DLCB *llcp_dlc_find_dlcb_by_sap (UINT8 local_sap, UINT8 remote_sap); 338 void llcp_dlc_flush_q (tLLCP_DLCB *p_dlcb); 339 void llcp_dlc_proc_i_pdu (UINT8 dsap, UINT8 ssap, UINT16 i_pdu_length, UINT8 *p_i_pdu, BT_HDR *p_msg); 340 void llcp_dlc_proc_rx_pdu (UINT8 dsap, UINT8 ptype, UINT8 ssap, UINT16 length, UINT8 *p_data); 341 void llcp_dlc_check_to_send_rr_rnr (void); 342 BOOLEAN llcp_dlc_is_rw_open (tLLCP_DLCB *p_dlcb); 343 BT_HDR *llcp_dlc_get_next_pdu (tLLCP_DLCB *p_dlcb); 344 UINT16 llcp_dlc_get_next_pdu_length (tLLCP_DLCB *p_dlcb); 345 346 /* 347 ** Functions provided by llcp_sdp.c 348 */ 349 void llcp_sdp_proc_data (tLLCP_SAP_CBACK_DATA *p_data); 350 tLLCP_STATUS llcp_sdp_send_sdreq (UINT8 tid, char *p_name); 351 UINT8 llcp_sdp_get_sap_by_name (char *p_name, UINT8 length); 352 tLLCP_STATUS llcp_sdp_proc_snl (UINT16 sdu_length, UINT8 *p); 353 void llcp_sdp_check_send_snl (void); 354 void llcp_sdp_proc_deactivation (void); 355 #ifdef __cplusplus 356 } 357 #endif 358 359 #endif 360