1 /****************************************************************************** 2 * 3 * Copyright (C) 2010-2013 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 the LLCP API code 23 * 24 ******************************************************************************/ 25 26 #include <string.h> 27 #include "gki.h" 28 #include "nfc_target.h" 29 #include "bt_types.h" 30 #include "llcp_api.h" 31 #include "llcp_int.h" 32 #include "llcp_defs.h" 33 34 #if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */ 35 36 tLLCP_TEST_PARAMS llcp_test_params = 37 { 38 LLCP_VERSION_VALUE, 39 0, /* not override */ 40 }; 41 42 /******************************************************************************* 43 ** 44 ** Function LLCP_SetTestParams 45 ** 46 ** Description Set test parameters for LLCP 47 ** 48 ** 49 ** Returns void 50 ** 51 *******************************************************************************/ 52 void LLCP_SetTestParams (UINT8 version, UINT16 wks) 53 { 54 LLCP_TRACE_API2 ("LLCP_SetTestParams () version:0x%02X, wks:0x%04X", 55 version, wks); 56 57 if (version != 0xFF) 58 llcp_test_params.version = version; 59 60 if (wks != 0xFFFF) 61 llcp_test_params.wks = wks; 62 } 63 #endif 64 65 /******************************************************************************* 66 ** 67 ** Function LLCP_RegisterDtaCback 68 ** 69 ** Description Register callback function for LLCP DTA testing 70 ** 71 ** 72 ** Returns void 73 ** 74 *******************************************************************************/ 75 void LLCP_RegisterDtaCback (tLLCP_DTA_CBACK *p_dta_cback) 76 { 77 LLCP_TRACE_API0 ("LLCP_RegisterDtaCback ()"); 78 79 llcp_cb.p_dta_cback = p_dta_cback; 80 } 81 82 /******************************************************************************* 83 ** 84 ** Function LLCP_SetConfig 85 ** 86 ** Description Set configuration parameters for LLCP 87 ** - Local Link MIU 88 ** - Option parameter 89 ** - Response Waiting Time Index 90 ** - Local Link Timeout 91 ** - Inactivity Timeout as initiator role 92 ** - Inactivity Timeout as target role 93 ** - Delay SYMM response 94 ** - Data link connection timeout 95 ** - Delay timeout to send first PDU as initiator 96 ** 97 ** Returns void 98 ** 99 *******************************************************************************/ 100 void LLCP_SetConfig (UINT16 link_miu, 101 UINT8 opt, 102 UINT8 wt, 103 UINT16 link_timeout, 104 UINT16 inact_timeout_init, 105 UINT16 inact_timeout_target, 106 UINT16 symm_delay, 107 UINT16 data_link_timeout, 108 UINT16 delay_first_pdu_timeout) 109 { 110 LLCP_TRACE_API4 ("LLCP_SetConfig () link_miu:%d, opt:0x%02X, wt:%d, link_timeout:%d", 111 link_miu, opt, wt, link_timeout); 112 LLCP_TRACE_API4 (" inact_timeout (init:%d,target:%d), symm_delay:%d, data_link_timeout:%d", 113 inact_timeout_init, inact_timeout_target, symm_delay, data_link_timeout); 114 LLCP_TRACE_API1 (" delay_first_pdu_timeout:%d", delay_first_pdu_timeout); 115 116 if (link_miu < LLCP_DEFAULT_MIU) 117 { 118 LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be smaller than LLCP_DEFAULT_MIU (%d)", 119 LLCP_DEFAULT_MIU); 120 link_miu = LLCP_DEFAULT_MIU; 121 } 122 else if (link_miu > LLCP_MAX_MIU) 123 { 124 LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be bigger than LLCP_MAX_MIU (%d)", 125 LLCP_MAX_MIU); 126 link_miu = LLCP_MAX_MIU; 127 } 128 129 /* if Link MIU is bigger than GKI buffer */ 130 if (link_miu > LLCP_MIU) 131 { 132 LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be bigger than LLCP_MIU (%d)", 133 LLCP_MIU); 134 llcp_cb.lcb.local_link_miu = LLCP_MIU; 135 } 136 else 137 llcp_cb.lcb.local_link_miu = link_miu; 138 139 llcp_cb.lcb.local_opt = opt; 140 llcp_cb.lcb.local_wt = wt; 141 142 if (link_timeout < LLCP_LTO_UNIT) 143 { 144 LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_timeout shall not be smaller than LLCP_LTO_UNIT (%d ms)", 145 LLCP_LTO_UNIT); 146 llcp_cb.lcb.local_lto = LLCP_DEFAULT_LTO_IN_MS; 147 } 148 else if (link_timeout > LLCP_MAX_LTO_IN_MS) 149 { 150 LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_timeout shall not be bigger than LLCP_MAX_LTO_IN_MS (%d ms)", 151 LLCP_MAX_LTO_IN_MS); 152 llcp_cb.lcb.local_lto = LLCP_MAX_LTO_IN_MS; 153 } 154 else 155 llcp_cb.lcb.local_lto = link_timeout; 156 157 llcp_cb.lcb.inact_timeout_init = inact_timeout_init; 158 llcp_cb.lcb.inact_timeout_target = inact_timeout_target; 159 llcp_cb.lcb.symm_delay = symm_delay; 160 llcp_cb.lcb.data_link_timeout = data_link_timeout; 161 llcp_cb.lcb.delay_first_pdu_timeout = delay_first_pdu_timeout; 162 } 163 164 /******************************************************************************* 165 ** 166 ** Function LLCP_GetConfig 167 ** 168 ** Description Get configuration parameters for LLCP 169 ** - Local Link MIU 170 ** - Option parameter 171 ** - Response Waiting Time Index 172 ** - Local Link Timeout 173 ** - Inactivity Timeout as initiator role 174 ** - Inactivity Timeout as target role 175 ** - Delay SYMM response 176 ** - Data link connection timeout 177 ** - Delay timeout to send first PDU as initiator 178 ** 179 ** Returns void 180 ** 181 *******************************************************************************/ 182 void LLCP_GetConfig (UINT16 *p_link_miu, 183 UINT8 *p_opt, 184 UINT8 *p_wt, 185 UINT16 *p_link_timeout, 186 UINT16 *p_inact_timeout_init, 187 UINT16 *p_inact_timeout_target, 188 UINT16 *p_symm_delay, 189 UINT16 *p_data_link_timeout, 190 UINT16 *p_delay_first_pdu_timeout) 191 { 192 *p_link_miu = llcp_cb.lcb.local_link_miu; 193 *p_opt = llcp_cb.lcb.local_opt; 194 *p_wt = llcp_cb.lcb.local_wt; 195 *p_link_timeout = llcp_cb.lcb.local_lto; 196 *p_inact_timeout_init = llcp_cb.lcb.inact_timeout_init; 197 *p_inact_timeout_target = llcp_cb.lcb.inact_timeout_target; 198 *p_symm_delay = llcp_cb.lcb.symm_delay; 199 *p_data_link_timeout = llcp_cb.lcb.data_link_timeout; 200 *p_delay_first_pdu_timeout = llcp_cb.lcb.delay_first_pdu_timeout; 201 202 LLCP_TRACE_API4 ("LLCP_GetConfig () link_miu:%d, opt:0x%02X, wt:%d, link_timeout:%d", 203 *p_link_miu, *p_opt, *p_wt, *p_link_timeout); 204 LLCP_TRACE_API4 (" inact_timeout (init:%d, target:%d), symm_delay:%d, data_link_timeout:%d", 205 *p_inact_timeout_init, *p_inact_timeout_target, *p_symm_delay, *p_data_link_timeout); 206 LLCP_TRACE_API1 (" delay_first_pdu_timeout:%d", *p_delay_first_pdu_timeout); 207 } 208 209 /******************************************************************************* 210 ** 211 ** Function LLCP_GetDiscoveryConfig 212 ** 213 ** Description Returns discovery config for ISO 18092 MAC link activation 214 ** This function is called to get general bytes for NFC_PMID_ATR_REQ_GEN_BYTES 215 ** or NFC_PMID_ATR_RES_GEN_BYTES before starting discovery. 216 ** 217 ** wt:Waiting time 0 - 8, only for listen 218 ** p_gen_bytes: pointer to store LLCP magic number and paramters 219 ** p_gen_bytes_len: length of buffer for gen bytes as input 220 ** (NOTE:it must be bigger than LLCP_MIN_GEN_BYTES) 221 ** actual gen bytes size as output 222 ** 223 ** Restrictions on the use of ISO 18092 224 ** 1. The DID features shall not be used. 225 ** 2. the NAD features shall not be used. 226 ** 3. Frame waiting time extentions (WTX) shall not be used. 227 ** 228 ** Returns None 229 ** 230 *******************************************************************************/ 231 void LLCP_GetDiscoveryConfig (UINT8 *p_wt, 232 UINT8 *p_gen_bytes, 233 UINT8 *p_gen_bytes_len) 234 { 235 UINT8 *p = p_gen_bytes; 236 237 LLCP_TRACE_API0 ("LLCP_GetDiscoveryConfig ()"); 238 239 if (*p_gen_bytes_len < LLCP_MIN_GEN_BYTES) 240 { 241 LLCP_TRACE_ERROR1 ("LLCP_GetDiscoveryConfig (): GenBytes length shall not be smaller than LLCP_MIN_GEN_BYTES (%d)", 242 LLCP_MIN_GEN_BYTES); 243 *p_gen_bytes_len = 0; 244 return; 245 } 246 247 *p_wt = llcp_cb.lcb.local_wt; 248 249 UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE0); 250 UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE1); 251 UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE2); 252 253 #if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */ 254 UINT8_TO_BE_STREAM (p, LLCP_VERSION_TYPE); 255 UINT8_TO_BE_STREAM (p, LLCP_VERSION_LEN); 256 UINT8_TO_BE_STREAM (p, llcp_test_params.version); 257 258 UINT8_TO_BE_STREAM (p, LLCP_MIUX_TYPE); 259 UINT8_TO_BE_STREAM (p, LLCP_MIUX_LEN); 260 UINT16_TO_BE_STREAM (p, (llcp_cb.lcb.local_link_miu - LLCP_DEFAULT_MIU)); 261 262 UINT8_TO_BE_STREAM (p, LLCP_WKS_TYPE); 263 UINT8_TO_BE_STREAM (p, LLCP_WKS_LEN); 264 if (llcp_test_params.wks == 0) /* not override */ 265 { 266 UINT16_TO_BE_STREAM (p, llcp_cb.lcb.wks); 267 } 268 else 269 { 270 UINT16_TO_BE_STREAM (p, llcp_test_params.wks); 271 } 272 #else 273 UINT8_TO_BE_STREAM (p, LLCP_VERSION_TYPE); 274 UINT8_TO_BE_STREAM (p, LLCP_VERSION_LEN); 275 UINT8_TO_BE_STREAM (p, LLCP_VERSION_VALUE); 276 277 UINT8_TO_BE_STREAM (p, LLCP_MIUX_TYPE); 278 UINT8_TO_BE_STREAM (p, LLCP_MIUX_LEN); 279 UINT16_TO_BE_STREAM (p, (llcp_cb.lcb.local_link_miu - LLCP_DEFAULT_MIU)); 280 281 UINT8_TO_BE_STREAM (p, LLCP_WKS_TYPE); 282 UINT8_TO_BE_STREAM (p, LLCP_WKS_LEN); 283 UINT16_TO_BE_STREAM (p, llcp_cb.lcb.wks); 284 #endif 285 286 UINT8_TO_BE_STREAM (p, LLCP_LTO_TYPE); 287 UINT8_TO_BE_STREAM (p, LLCP_LTO_LEN); 288 UINT8_TO_BE_STREAM (p, (llcp_cb.lcb.local_lto/LLCP_LTO_UNIT)); 289 290 UINT8_TO_BE_STREAM (p, LLCP_OPT_TYPE); 291 UINT8_TO_BE_STREAM (p, LLCP_OPT_LEN); 292 UINT8_TO_BE_STREAM (p, llcp_cb.lcb.local_opt); 293 294 *p_gen_bytes_len = (UINT8) (p - p_gen_bytes); 295 } 296 297 /******************************************************************************* 298 ** 299 ** Function LLCP_ActivateLink 300 ** 301 ** Description This function will activate LLCP link with LR, WT and Gen Bytes 302 ** in activation NTF from NFCC. 303 ** 304 ** LLCP_LINK_ACTIVATION_COMPLETE_EVT will be returned through 305 ** callback function if successful. 306 ** Otherwise, LLCP_LINK_ACTIVATION_FAILED_EVT will be returned. 307 ** 308 ** Returns LLCP_STATUS_SUCCESS if success 309 ** 310 *******************************************************************************/ 311 tLLCP_STATUS LLCP_ActivateLink (tLLCP_ACTIVATE_CONFIG config, 312 tLLCP_LINK_CBACK *p_link_cback) 313 { 314 LLCP_TRACE_API1 ("LLCP_ActivateLink () link_state = %d", llcp_cb.lcb.link_state); 315 316 if ( (llcp_cb.lcb.link_state == LLCP_LINK_STATE_DEACTIVATED) 317 &&(p_link_cback) ) 318 { 319 llcp_cb.lcb.p_link_cback = p_link_cback; 320 return (llcp_link_activate (&config)); 321 } 322 else 323 return LLCP_STATUS_FAIL; 324 } 325 326 /******************************************************************************* 327 ** 328 ** Function LLCP_DeactivateLink 329 ** 330 ** Description Deactivate LLCP link 331 ** 332 ** LLCP_LINK_DEACTIVATED_EVT will be returned through callback 333 ** when LLCP link is deactivated. Then NFC link may be deactivated. 334 ** 335 ** Returns LLCP_STATUS_SUCCESS if success 336 ** 337 *******************************************************************************/ 338 tLLCP_STATUS LLCP_DeactivateLink (void) 339 { 340 LLCP_TRACE_API1 ("LLCP_DeactivateLink () link_state = %d", llcp_cb.lcb.link_state); 341 342 if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_DEACTIVATED) 343 { 344 llcp_link_deactivate (LLCP_LINK_LOCAL_INITIATED); 345 return LLCP_STATUS_SUCCESS; 346 } 347 else 348 return LLCP_STATUS_FAIL; 349 } 350 351 /******************************************************************************* 352 ** 353 ** Function LLCP_RegisterServer 354 ** 355 ** Description Register server and callback function 356 ** 357 ** reg_sap : Well-Known SAP except LM and SDP (0x02 - 0x0F) 358 ** Advertized by SDP (0x10 - 0x1F) 359 ** LLCP_INVALID_SAP, LLCP will allocate between 0x10 and 0x1F 360 ** link_type : LLCP_LINK_TYPE_LOGICAL_DATA_LINK 361 ** and/or LLCP_LINK_TYPE_DATA_LINK_CONNECTION 362 ** p_service_name : Null-terminated string up to LLCP_MAX_SN_LEN 363 ** 364 ** Returns SAP between 0x02 and 0x1F, if success 365 ** LLCP_INVALID_SAP, otherwise 366 ** 367 *******************************************************************************/ 368 UINT8 LLCP_RegisterServer (UINT8 reg_sap, 369 UINT8 link_type, 370 char *p_service_name, 371 tLLCP_APP_CBACK *p_app_cback) 372 { 373 UINT8 sap; 374 UINT16 length; 375 tLLCP_APP_CB *p_app_cb; 376 377 LLCP_TRACE_API3 ("LLCP_RegisterServer (): SAP:0x%x, link_type:0x%x, ServiceName:<%s>", 378 reg_sap, link_type, ((p_service_name == NULL) ? "" : p_service_name)); 379 380 if (!p_app_cback) 381 { 382 LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): Callback must be provided"); 383 return LLCP_INVALID_SAP; 384 } 385 else if ( ((link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0x00) 386 &&((link_type & LLCP_LINK_TYPE_DATA_LINK_CONNECTION) == 0x00) ) 387 { 388 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): link type (0x%x) must be specified", link_type); 389 return LLCP_INVALID_SAP; 390 } 391 392 if (reg_sap == LLCP_INVALID_SAP) 393 { 394 /* allocate a SAP between 0x10 and 0x1F */ 395 for (sap = 0; sap < LLCP_MAX_SERVER; sap++) 396 { 397 if (llcp_cb.server_cb[sap].p_app_cback == NULL) 398 { 399 p_app_cb = &llcp_cb.server_cb[sap]; 400 reg_sap = LLCP_LOWER_BOUND_SDP_SAP + sap; 401 break; 402 } 403 } 404 405 if (reg_sap == LLCP_INVALID_SAP) 406 { 407 LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): out of resource"); 408 return LLCP_INVALID_SAP; 409 } 410 } 411 else if (reg_sap == LLCP_SAP_LM) 412 { 413 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is for link manager", reg_sap); 414 return LLCP_INVALID_SAP; 415 } 416 else if (reg_sap <= LLCP_UPPER_BOUND_WK_SAP) 417 { 418 if (reg_sap >= LLCP_MAX_WKS) 419 { 420 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): out of resource for SAP (0x%x)", reg_sap); 421 return LLCP_INVALID_SAP; 422 } 423 else if (llcp_cb.wks_cb[reg_sap].p_app_cback) 424 { 425 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is already registered", reg_sap); 426 return LLCP_INVALID_SAP; 427 } 428 else 429 { 430 p_app_cb = &llcp_cb.wks_cb[reg_sap]; 431 } 432 } 433 else if (reg_sap <= LLCP_UPPER_BOUND_SDP_SAP) 434 { 435 if (reg_sap - LLCP_LOWER_BOUND_SDP_SAP >= LLCP_MAX_SERVER) 436 { 437 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): out of resource for SAP (0x%x)", reg_sap); 438 return LLCP_INVALID_SAP; 439 } 440 else if (llcp_cb.server_cb[reg_sap - LLCP_LOWER_BOUND_SDP_SAP].p_app_cback) 441 { 442 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is already registered", reg_sap); 443 return LLCP_INVALID_SAP; 444 } 445 else 446 { 447 p_app_cb = &llcp_cb.server_cb[reg_sap - LLCP_LOWER_BOUND_SDP_SAP]; 448 } 449 } 450 else if (reg_sap >= LLCP_LOWER_BOUND_LOCAL_SAP) 451 { 452 LLCP_TRACE_ERROR2 ("LLCP_RegisterServer (): SAP (0x%x) must be less than 0x%x", 453 reg_sap, LLCP_LOWER_BOUND_LOCAL_SAP); 454 return LLCP_INVALID_SAP; 455 } 456 457 memset (p_app_cb, 0x00, sizeof (tLLCP_APP_CB)); 458 459 if (p_service_name) 460 { 461 length = (UINT8) strlen (p_service_name); 462 if (length > LLCP_MAX_SN_LEN) 463 { 464 LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): Service Name (%d bytes) is too long", length); 465 return LLCP_INVALID_SAP; 466 } 467 468 p_app_cb->p_service_name = (UINT8 *) GKI_getbuf ((UINT16) (length + 1)); 469 if (p_app_cb->p_service_name == NULL) 470 { 471 LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): Out of resource"); 472 return LLCP_INVALID_SAP; 473 } 474 475 BCM_STRNCPY_S ((char *) p_app_cb->p_service_name, length + 1, (char *) p_service_name, length + 1); 476 p_app_cb->p_service_name[length] = 0; 477 } 478 else 479 p_app_cb->p_service_name = NULL; 480 481 p_app_cb->p_app_cback = p_app_cback; 482 p_app_cb->link_type = link_type; 483 484 if (reg_sap <= LLCP_UPPER_BOUND_WK_SAP) 485 { 486 llcp_cb.lcb.wks |= (1 << reg_sap); 487 } 488 489 LLCP_TRACE_DEBUG1 ("LLCP_RegisterServer (): Registered SAP = 0x%02X", reg_sap); 490 491 if (link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) 492 { 493 llcp_cb.num_logical_data_link++; 494 llcp_util_adjust_ll_congestion (); 495 } 496 497 return reg_sap; 498 } 499 500 /******************************************************************************* 501 ** 502 ** Function LLCP_RegisterClient 503 ** 504 ** Description Register client and callback function 505 ** 506 ** link_type : LLCP_LINK_TYPE_LOGICAL_DATA_LINK 507 ** and/or LLCP_LINK_TYPE_DATA_LINK_CONNECTION 508 ** 509 ** Returns SAP between 0x20 and 0x3F, if success 510 ** LLCP_INVALID_SAP, otherwise 511 ** 512 *******************************************************************************/ 513 UINT8 LLCP_RegisterClient (UINT8 link_type, 514 tLLCP_APP_CBACK *p_app_cback) 515 { 516 UINT8 reg_sap = LLCP_INVALID_SAP; 517 UINT8 sap; 518 tLLCP_APP_CB *p_app_cb; 519 520 LLCP_TRACE_API1 ("LLCP_RegisterClient (): link_type = 0x%x", link_type); 521 522 if (!p_app_cback) 523 { 524 LLCP_TRACE_ERROR0 ("LLCP_RegisterClient (): Callback must be provided"); 525 return LLCP_INVALID_SAP; 526 } 527 else if ( ((link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0x00) 528 &&((link_type & LLCP_LINK_TYPE_DATA_LINK_CONNECTION) == 0x00) ) 529 { 530 LLCP_TRACE_ERROR1 ("LLCP_RegisterClient (): link type (0x%x) must be specified", link_type); 531 return LLCP_INVALID_SAP; 532 } 533 534 /* allocate a SAP between 0x20 and 0x3F */ 535 for (sap = 0; sap < LLCP_MAX_CLIENT; sap++) 536 { 537 if (llcp_cb.client_cb[sap].p_app_cback == NULL) 538 { 539 p_app_cb = &llcp_cb.client_cb[sap]; 540 memset (p_app_cb, 0x00, sizeof (tLLCP_APP_CB)); 541 reg_sap = LLCP_LOWER_BOUND_LOCAL_SAP + sap; 542 break; 543 } 544 } 545 546 if (reg_sap == LLCP_INVALID_SAP) 547 { 548 LLCP_TRACE_ERROR0 ("LLCP_RegisterClient (): out of resource"); 549 return LLCP_INVALID_SAP; 550 } 551 552 p_app_cb->p_app_cback = p_app_cback; 553 p_app_cb->p_service_name = NULL; 554 p_app_cb->link_type = link_type; 555 556 LLCP_TRACE_DEBUG1 ("LLCP_RegisterClient (): Registered SAP = 0x%02X", reg_sap); 557 558 if (link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) 559 { 560 llcp_cb.num_logical_data_link++; 561 llcp_util_adjust_ll_congestion (); 562 } 563 564 return reg_sap; 565 } 566 567 /******************************************************************************* 568 ** 569 ** Function LLCP_Deregister 570 ** 571 ** Description Deregister server or client 572 ** 573 ** 574 ** Returns LLCP_STATUS_SUCCESS if success 575 ** 576 *******************************************************************************/ 577 tLLCP_STATUS LLCP_Deregister (UINT8 local_sap) 578 { 579 UINT8 idx; 580 tLLCP_APP_CB *p_app_cb; 581 582 LLCP_TRACE_API1 ("LLCP_Deregister () SAP:0x%x", local_sap); 583 584 p_app_cb = llcp_util_get_app_cb (local_sap); 585 586 if ((!p_app_cb) || (p_app_cb->p_app_cback == NULL)) 587 { 588 LLCP_TRACE_ERROR1 ("LLCP_Deregister (): SAP (0x%x) is not registered", local_sap); 589 return LLCP_STATUS_FAIL; 590 } 591 592 if (p_app_cb->p_service_name) 593 GKI_freebuf (p_app_cb->p_service_name); 594 595 /* update WKS bit map */ 596 if (local_sap <= LLCP_UPPER_BOUND_WK_SAP) 597 { 598 llcp_cb.lcb.wks &= ~ (1 << local_sap); 599 } 600 601 /* discard any received UI PDU on this SAP */ 602 LLCP_FlushLogicalLinkRxData (local_sap); 603 llcp_cb.total_rx_ui_pdu = 0; 604 605 /* deallocate any data link connection on this SAP */ 606 for (idx = 0; idx < LLCP_MAX_DATA_LINK; idx++) 607 { 608 if ( (llcp_cb.dlcb[idx].state != LLCP_DLC_STATE_IDLE) 609 &&(llcp_cb.dlcb[idx].local_sap == local_sap) ) 610 { 611 llcp_util_deallocate_data_link (&llcp_cb.dlcb[idx]); 612 } 613 } 614 615 p_app_cb->p_app_cback = NULL; 616 617 /* discard any pending tx UI PDU from this SAP */ 618 while (p_app_cb->ui_xmit_q.p_first) 619 { 620 GKI_freebuf (GKI_dequeue (&p_app_cb->ui_xmit_q)); 621 llcp_cb.total_tx_ui_pdu--; 622 } 623 624 if (p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) 625 { 626 llcp_cb.num_logical_data_link--; 627 llcp_util_adjust_ll_congestion (); 628 } 629 630 /* check rx congestion status */ 631 llcp_util_check_rx_congested_status (); 632 633 return LLCP_STATUS_SUCCESS; 634 } 635 636 /******************************************************************************* 637 ** 638 ** Function LLCP_IsLogicalLinkCongested 639 ** 640 ** Description Check if logical link is congested 641 ** 642 ** 643 ** Returns TRUE if congested 644 ** 645 *******************************************************************************/ 646 BOOLEAN LLCP_IsLogicalLinkCongested (UINT8 local_sap, 647 UINT8 num_pending_ui_pdu, 648 UINT8 total_pending_ui_pdu, 649 UINT8 total_pending_i_pdu) 650 { 651 tLLCP_APP_CB *p_app_cb; 652 653 LLCP_TRACE_API4 ("LLCP_IsLogicalLinkCongested () Local SAP:0x%x, pending = (%d, %d, %d)", 654 local_sap, num_pending_ui_pdu, total_pending_ui_pdu, total_pending_i_pdu); 655 656 p_app_cb = llcp_util_get_app_cb (local_sap); 657 658 if ( (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED) 659 ||(p_app_cb == NULL) 660 ||(p_app_cb->p_app_cback == NULL) 661 ||((p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0) 662 ||(p_app_cb->is_ui_tx_congested) ) 663 { 664 return (TRUE); 665 } 666 else if ( (num_pending_ui_pdu + p_app_cb->ui_xmit_q.count >= llcp_cb.ll_tx_congest_start) 667 ||(total_pending_ui_pdu + llcp_cb.total_tx_ui_pdu >= llcp_cb.max_num_ll_tx_buff) 668 ||(total_pending_ui_pdu + total_pending_i_pdu + llcp_cb.total_tx_ui_pdu + llcp_cb.total_tx_i_pdu >= llcp_cb.max_num_tx_buff) ) 669 { 670 /* set flag so LLCP can notify uncongested status later */ 671 p_app_cb->is_ui_tx_congested = TRUE; 672 673 return (TRUE); 674 } 675 return (FALSE); 676 } 677 678 /******************************************************************************* 679 ** 680 ** Function LLCP_SendUI 681 ** 682 ** Description Send connnectionless data to DSAP 683 ** 684 ** 685 ** Returns LLCP_STATUS_SUCCESS if success 686 ** LLCP_STATUS_CONGESTED if logical link is congested 687 ** LLCP_STATUS_FAIL, otherwise 688 ** 689 *******************************************************************************/ 690 tLLCP_STATUS LLCP_SendUI (UINT8 ssap, 691 UINT8 dsap, 692 BT_HDR *p_buf) 693 { 694 tLLCP_STATUS status = LLCP_STATUS_FAIL; 695 tLLCP_APP_CB *p_app_cb; 696 697 LLCP_TRACE_API2 ("LLCP_SendUI () SSAP=0x%x, DSAP=0x%x", ssap, dsap); 698 699 p_app_cb = llcp_util_get_app_cb (ssap); 700 701 if ( (p_app_cb == NULL) 702 ||(p_app_cb->p_app_cback == NULL) ) 703 { 704 LLCP_TRACE_ERROR1 ("LLCP_SendUI (): SSAP (0x%x) is not registered", ssap); 705 } 706 else if ((p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0) 707 { 708 LLCP_TRACE_ERROR1 ("LLCP_SendUI (): Logical link on SSAP (0x%x) is not enabled", ssap); 709 } 710 else if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED) 711 { 712 LLCP_TRACE_ERROR0 ("LLCP_SendUI (): LLCP link is not activated"); 713 } 714 else if ( (llcp_cb.lcb.peer_opt == LLCP_LSC_UNKNOWN) 715 ||(llcp_cb.lcb.peer_opt & LLCP_LSC_1) ) 716 { 717 if (p_buf->len <= llcp_cb.lcb.peer_miu) 718 { 719 if (p_buf->offset >= LLCP_MIN_OFFSET) 720 { 721 status = llcp_util_send_ui (ssap, dsap, p_app_cb, p_buf); 722 } 723 else 724 { 725 LLCP_TRACE_ERROR2 ("LLCP_SendUI (): offset (%d) must be %d at least", 726 p_buf->offset, LLCP_MIN_OFFSET ); 727 } 728 } 729 else 730 { 731 LLCP_TRACE_ERROR0 ("LLCP_SendUI (): Data length shall not be bigger than peer's link MIU"); 732 } 733 } 734 else 735 { 736 LLCP_TRACE_ERROR0 ("LLCP_SendUI (): Peer doesn't support connectionless link"); 737 } 738 739 if (status == LLCP_STATUS_FAIL) 740 { 741 GKI_freebuf (p_buf); 742 } 743 744 return status; 745 } 746 747 /******************************************************************************* 748 ** 749 ** Function LLCP_ReadLogicalLinkData 750 ** 751 ** Description Read information of UI PDU for local SAP 752 ** 753 ** - Remote SAP who sent UI PDU is returned. 754 ** - Information of UI PDU up to max_data_len is copied into p_data. 755 ** - Information of next UI PDU is not concatenated. 756 ** - Recommended max_data_len is link MIU of local device 757 ** 758 ** Returns TRUE if more information of UI PDU or more UI PDU in queue 759 ** 760 *******************************************************************************/ 761 BOOLEAN LLCP_ReadLogicalLinkData (UINT8 local_sap, 762 UINT32 max_data_len, 763 UINT8 *p_remote_sap, 764 UINT32 *p_data_len, 765 UINT8 *p_data) 766 { 767 tLLCP_APP_CB *p_app_cb; 768 BT_HDR *p_buf; 769 UINT8 *p_ui_pdu; 770 UINT16 pdu_hdr, ui_pdu_length; 771 772 LLCP_TRACE_API1 ("LLCP_ReadLogicalLinkData () Local SAP:0x%x", local_sap); 773 774 *p_data_len = 0; 775 776 p_app_cb = llcp_util_get_app_cb (local_sap); 777 778 /* if application is registered */ 779 if ((p_app_cb) && (p_app_cb->p_app_cback)) 780 { 781 /* if any UI PDU in rx queue */ 782 if (p_app_cb->ui_rx_q.p_first) 783 { 784 p_buf = (BT_HDR *) p_app_cb->ui_rx_q.p_first; 785 p_ui_pdu = (UINT8*) (p_buf + 1) + p_buf->offset; 786 787 /* get length of UI PDU */ 788 BE_STREAM_TO_UINT16 (ui_pdu_length, p_ui_pdu); 789 790 /* get remote SAP from LLCP header */ 791 BE_STREAM_TO_UINT16 (pdu_hdr, p_ui_pdu); 792 *p_remote_sap = LLCP_GET_SSAP (pdu_hdr); 793 794 /* layer_specific has the offset to read within UI PDU */ 795 p_ui_pdu += p_buf->layer_specific; 796 797 /* copy data up to max_data_len */ 798 if (max_data_len >= (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific)) 799 { 800 /* copy information without LLCP header */ 801 *p_data_len = (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific); 802 803 /* move to next UI PDU if any */ 804 p_buf->layer_specific = 0; /* reset offset to read from the first byte of next UI PDU */ 805 p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length; 806 p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length; 807 } 808 else 809 { 810 *p_data_len = max_data_len; 811 812 /* update offset to read from remaining UI PDU next time */ 813 p_buf->layer_specific += max_data_len; 814 } 815 816 memcpy (p_data, p_ui_pdu, *p_data_len); 817 818 /* if read all of UI PDU */ 819 if (p_buf->len == 0) 820 { 821 GKI_dequeue (&p_app_cb->ui_rx_q); 822 GKI_freebuf (p_buf); 823 824 /* decrease number of received UI PDU in in all of ui_rx_q and check rx congestion status */ 825 llcp_cb.total_rx_ui_pdu--; 826 llcp_util_check_rx_congested_status (); 827 } 828 } 829 830 /* if there is more UI PDU in rx queue */ 831 if (p_app_cb->ui_rx_q.p_first) 832 { 833 return (TRUE); 834 } 835 else 836 { 837 return (FALSE); 838 } 839 } 840 else 841 { 842 LLCP_TRACE_ERROR1 ("LLCP_ReadLogicalLinkData (): Unregistered SAP:0x%x", local_sap); 843 844 return (FALSE); 845 } 846 } 847 848 /******************************************************************************* 849 ** 850 ** Function LLCP_FlushLogicalLinkRxData 851 ** 852 ** Description Discard received data in logical data link of local SAP 853 ** 854 ** 855 ** Returns length of data flushed 856 ** 857 *******************************************************************************/ 858 UINT32 LLCP_FlushLogicalLinkRxData (UINT8 local_sap) 859 { 860 BT_HDR *p_buf; 861 UINT32 flushed_length = 0; 862 tLLCP_APP_CB *p_app_cb; 863 UINT8 *p_ui_pdu; 864 UINT16 ui_pdu_length; 865 866 LLCP_TRACE_API1 ("LLCP_FlushLogicalLinkRxData () Local SAP:0x%x", local_sap); 867 868 p_app_cb = llcp_util_get_app_cb (local_sap); 869 870 /* if application is registered */ 871 if ((p_app_cb) && (p_app_cb->p_app_cback)) 872 { 873 /* if any UI PDU in rx queue */ 874 while (p_app_cb->ui_rx_q.p_first) 875 { 876 p_buf = (BT_HDR *) p_app_cb->ui_rx_q.p_first; 877 p_ui_pdu = (UINT8*) (p_buf + 1) + p_buf->offset; 878 879 /* get length of UI PDU */ 880 BE_STREAM_TO_UINT16 (ui_pdu_length, p_ui_pdu); 881 882 flushed_length += (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific); 883 884 /* move to next UI PDU if any */ 885 p_buf->layer_specific = 0; /* offset */ 886 p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length; 887 p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length; 888 889 /* if read all of UI PDU */ 890 if (p_buf->len == 0) 891 { 892 GKI_dequeue (&p_app_cb->ui_rx_q); 893 GKI_freebuf (p_buf); 894 llcp_cb.total_rx_ui_pdu--; 895 } 896 } 897 898 /* number of received UI PDU is decreased so check rx congestion status */ 899 llcp_util_check_rx_congested_status (); 900 } 901 else 902 { 903 LLCP_TRACE_ERROR1 ("LLCP_FlushLogicalLinkRxData (): Unregistered SAP:0x%x", local_sap); 904 } 905 906 return (flushed_length); 907 } 908 909 /******************************************************************************* 910 ** 911 ** Function LLCP_ConnectReq 912 ** 913 ** Description Create data link connection between registered SAP and DSAP 914 ** in peer LLCP, 915 ** 916 ** 917 ** Returns LLCP_STATUS_SUCCESS if success 918 ** LLCP_STATUS_FAIL, otherwise 919 ** 920 *******************************************************************************/ 921 tLLCP_STATUS LLCP_ConnectReq (UINT8 reg_sap, 922 UINT8 dsap, 923 tLLCP_CONNECTION_PARAMS *p_params) 924 { 925 tLLCP_DLCB *p_dlcb; 926 tLLCP_STATUS status; 927 tLLCP_APP_CB *p_app_cb; 928 929 LLCP_TRACE_API2 ("LLCP_ConnectReq () reg_sap=0x%x, DSAP=0x%x", reg_sap, dsap); 930 931 if ( (llcp_cb.lcb.peer_opt != LLCP_LSC_UNKNOWN) 932 &&((llcp_cb.lcb.peer_opt & LLCP_LSC_2) == 0) ) 933 { 934 LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Peer doesn't support connection-oriented link"); 935 return LLCP_STATUS_FAIL; 936 } 937 938 p_app_cb = llcp_util_get_app_cb (reg_sap); 939 940 /* if application is registered */ 941 if ( (p_app_cb == NULL) 942 ||(p_app_cb->p_app_cback == NULL) ) 943 { 944 LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): SSAP (0x%x) is not registered", reg_sap); 945 return LLCP_STATUS_FAIL; 946 } 947 948 if (dsap == LLCP_SAP_LM) 949 { 950 LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): DSAP (0x%x) must not be link manager SAP", dsap); 951 return LLCP_STATUS_FAIL; 952 } 953 954 if (dsap == LLCP_SAP_SDP) 955 { 956 if (strlen (p_params->sn) > LLCP_MAX_SN_LEN) 957 { 958 LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): Service Name (%d bytes) is too long", 959 strlen (p_params->sn)); 960 return LLCP_STATUS_FAIL; 961 } 962 } 963 964 if ((p_params) && (p_params->miu > llcp_cb.lcb.local_link_miu)) 965 { 966 LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Data link MIU shall not be bigger than local link MIU"); 967 return LLCP_STATUS_FAIL; 968 } 969 970 /* check if any pending connection request on this reg_sap */ 971 p_dlcb = llcp_dlc_find_dlcb_by_sap (reg_sap, LLCP_INVALID_SAP); 972 if (p_dlcb) 973 { 974 /* 975 ** Accepting LLCP may change SAP in CC, so we cannot find right data link connection 976 ** if there is multiple pending connection request on the same local SAP. 977 */ 978 LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): There is pending connect request on this reg_sap"); 979 return LLCP_STATUS_FAIL; 980 } 981 982 p_dlcb = llcp_util_allocate_data_link (reg_sap, dsap); 983 984 if (p_dlcb) 985 { 986 status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_REQ, p_params); 987 if (status != LLCP_STATUS_SUCCESS) 988 { 989 LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Error in state machine"); 990 llcp_util_deallocate_data_link (p_dlcb); 991 return LLCP_STATUS_FAIL; 992 } 993 } 994 else 995 { 996 return LLCP_STATUS_FAIL; 997 } 998 999 return LLCP_STATUS_SUCCESS; 1000 } 1001 1002 /******************************************************************************* 1003 ** 1004 ** Function LLCP_ConnectCfm 1005 ** 1006 ** Description Accept connection request from peer LLCP 1007 ** 1008 ** 1009 ** Returns LLCP_STATUS_SUCCESS if success 1010 ** LLCP_STATUS_FAIL, otherwise 1011 ** 1012 *******************************************************************************/ 1013 tLLCP_STATUS LLCP_ConnectCfm (UINT8 local_sap, 1014 UINT8 remote_sap, 1015 tLLCP_CONNECTION_PARAMS *p_params) 1016 { 1017 tLLCP_STATUS status; 1018 tLLCP_DLCB *p_dlcb; 1019 1020 LLCP_TRACE_API2 ("LLCP_ConnectCfm () Local SAP:0x%x, Remote SAP:0x%x)", 1021 local_sap, remote_sap); 1022 1023 if (!p_params) 1024 { 1025 LLCP_TRACE_ERROR0 ("LLCP_ConnectCfm (): tLLCP_CONNECTION_PARAMS must be provided"); 1026 return LLCP_STATUS_FAIL; 1027 } 1028 else if (p_params->miu > llcp_cb.lcb.local_link_miu) 1029 { 1030 LLCP_TRACE_ERROR0 ("LLCP_ConnectCfm (): Data link MIU shall not be bigger than local link MIU"); 1031 return LLCP_STATUS_FAIL; 1032 } 1033 1034 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1035 1036 if (p_dlcb) 1037 { 1038 status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_CFM, p_params); 1039 } 1040 else 1041 { 1042 LLCP_TRACE_ERROR0 ("LLCP_ConnectCfm (): No data link"); 1043 status = LLCP_STATUS_FAIL; 1044 } 1045 1046 return status; 1047 } 1048 1049 /******************************************************************************* 1050 ** 1051 ** Function LLCP_ConnectReject 1052 ** 1053 ** Description Reject connection request from peer LLCP 1054 ** 1055 ** reason : LLCP_SAP_DM_REASON_APP_REJECTED 1056 ** LLCP_SAP_DM_REASON_PERM_REJECT_THIS 1057 ** LLCP_SAP_DM_REASON_PERM_REJECT_ANY 1058 ** LLCP_SAP_DM_REASON_TEMP_REJECT_THIS 1059 ** LLCP_SAP_DM_REASON_TEMP_REJECT_ANY 1060 ** 1061 ** Returns LLCP_STATUS_SUCCESS if success 1062 ** LLCP_STATUS_FAIL, otherwise 1063 ** 1064 *******************************************************************************/ 1065 tLLCP_STATUS LLCP_ConnectReject (UINT8 local_sap, 1066 UINT8 remote_sap, 1067 UINT8 reason) 1068 { 1069 tLLCP_STATUS status; 1070 tLLCP_DLCB *p_dlcb; 1071 1072 LLCP_TRACE_API3 ("LLCP_ConnectReject () Local SAP:0x%x, Remote SAP:0x%x, reason:0x%x", 1073 local_sap, remote_sap, reason); 1074 1075 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1076 1077 if (p_dlcb) 1078 { 1079 status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_REJECT, &reason); 1080 llcp_util_deallocate_data_link (p_dlcb); 1081 } 1082 else 1083 { 1084 LLCP_TRACE_ERROR0 ("LLCP_ConnectReject (): No data link"); 1085 status = LLCP_STATUS_FAIL; 1086 } 1087 1088 return status; 1089 } 1090 1091 /******************************************************************************* 1092 ** 1093 ** Function LLCP_IsDataLinkCongested 1094 ** 1095 ** Description Check if data link connection is congested 1096 ** 1097 ** 1098 ** Returns TRUE if congested 1099 ** 1100 *******************************************************************************/ 1101 BOOLEAN LLCP_IsDataLinkCongested (UINT8 local_sap, 1102 UINT8 remote_sap, 1103 UINT8 num_pending_i_pdu, 1104 UINT8 total_pending_ui_pdu, 1105 UINT8 total_pending_i_pdu) 1106 { 1107 tLLCP_DLCB *p_dlcb; 1108 1109 LLCP_TRACE_API5 ("LLCP_IsDataLinkCongested () Local SAP:0x%x, Remote SAP:0x%x, pending = (%d, %d, %d)", 1110 local_sap, remote_sap, num_pending_i_pdu, total_pending_ui_pdu, total_pending_i_pdu); 1111 1112 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1113 1114 if (p_dlcb) 1115 { 1116 if ( (p_dlcb->is_tx_congested) 1117 ||(p_dlcb->remote_busy) ) 1118 { 1119 return (TRUE); 1120 } 1121 else if ( (num_pending_i_pdu + p_dlcb->i_xmit_q.count >= p_dlcb->remote_rw) 1122 ||(total_pending_ui_pdu + total_pending_i_pdu + llcp_cb.total_tx_ui_pdu + llcp_cb.total_tx_i_pdu >= llcp_cb.max_num_tx_buff) ) 1123 { 1124 /* set flag so LLCP can notify uncongested status later */ 1125 p_dlcb->is_tx_congested = TRUE; 1126 return (TRUE); 1127 } 1128 return (FALSE); 1129 } 1130 return (TRUE); 1131 } 1132 1133 /******************************************************************************* 1134 ** 1135 ** Function LLCP_SendData 1136 ** 1137 ** Description Send connection-oriented data 1138 ** 1139 ** 1140 ** Returns LLCP_STATUS_SUCCESS if success 1141 ** LLCP_STATUS_CONGESTED if data link is congested 1142 ** 1143 *******************************************************************************/ 1144 tLLCP_STATUS LLCP_SendData (UINT8 local_sap, 1145 UINT8 remote_sap, 1146 BT_HDR *p_buf) 1147 { 1148 tLLCP_STATUS status = LLCP_STATUS_FAIL; 1149 tLLCP_DLCB *p_dlcb; 1150 1151 LLCP_TRACE_API2 ("LLCP_SendData () Local SAP:0x%x, Remote SAP:0x%x", 1152 local_sap, remote_sap); 1153 1154 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1155 1156 if (p_dlcb) 1157 { 1158 if (p_dlcb->remote_miu >= p_buf->len) 1159 { 1160 if (p_buf->offset >= LLCP_MIN_OFFSET) 1161 { 1162 status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_DATA_REQ, p_buf); 1163 } 1164 else 1165 { 1166 LLCP_TRACE_ERROR2 ("LLCP_SendData (): offset (%d) must be %d at least", 1167 p_buf->offset, LLCP_MIN_OFFSET ); 1168 } 1169 } 1170 else 1171 { 1172 LLCP_TRACE_ERROR2 ("LLCP_SendData (): Information (%d bytes) cannot be more than peer MIU (%d bytes)", 1173 p_buf->len, p_dlcb->remote_miu); 1174 } 1175 } 1176 else 1177 { 1178 LLCP_TRACE_ERROR0 ("LLCP_SendData (): No data link"); 1179 } 1180 1181 if (status == LLCP_STATUS_FAIL) 1182 { 1183 GKI_freebuf (p_buf); 1184 } 1185 1186 return status; 1187 } 1188 1189 /******************************************************************************* 1190 ** 1191 ** Function LLCP_ReadDataLinkData 1192 ** 1193 ** Description Read information of I PDU for data link connection 1194 ** 1195 ** - Information of I PDU up to max_data_len is copied into p_data. 1196 ** - Information of next I PDU is not concatenated. 1197 ** - Recommended max_data_len is data link connection MIU of local 1198 ** end point 1199 ** 1200 ** Returns TRUE if more data in queue 1201 ** 1202 *******************************************************************************/ 1203 BOOLEAN LLCP_ReadDataLinkData (UINT8 local_sap, 1204 UINT8 remote_sap, 1205 UINT32 max_data_len, 1206 UINT32 *p_data_len, 1207 UINT8 *p_data) 1208 { 1209 tLLCP_DLCB *p_dlcb; 1210 BT_HDR *p_buf; 1211 UINT8 *p_i_pdu; 1212 UINT16 i_pdu_length; 1213 1214 LLCP_TRACE_API2 ("LLCP_ReadDataLinkData () Local SAP:0x%x, Remote SAP:0x%x", 1215 local_sap, remote_sap); 1216 1217 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1218 1219 *p_data_len = 0; 1220 if (p_dlcb) 1221 { 1222 /* if any I PDU in rx queue */ 1223 if (p_dlcb->i_rx_q.p_first) 1224 { 1225 p_buf = (BT_HDR *) p_dlcb->i_rx_q.p_first; 1226 p_i_pdu = (UINT8*) (p_buf + 1) + p_buf->offset; 1227 1228 /* get length of I PDU */ 1229 BE_STREAM_TO_UINT16 (i_pdu_length, p_i_pdu); 1230 1231 /* layer_specific has the offset to read within I PDU */ 1232 p_i_pdu += p_buf->layer_specific; 1233 1234 /* copy data up to max_data_len */ 1235 if (max_data_len >= (UINT32) (i_pdu_length - p_buf->layer_specific)) 1236 { 1237 /* copy information */ 1238 *p_data_len = (UINT32) (i_pdu_length - p_buf->layer_specific); 1239 1240 /* move to next I PDU if any */ 1241 p_buf->layer_specific = 0; /* reset offset to read from the first byte of next I PDU */ 1242 p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + i_pdu_length; 1243 p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + i_pdu_length; 1244 } 1245 else 1246 { 1247 *p_data_len = max_data_len; 1248 1249 /* update offset to read from remaining I PDU next time */ 1250 p_buf->layer_specific += max_data_len; 1251 } 1252 1253 memcpy (p_data, p_i_pdu, *p_data_len); 1254 1255 if (p_buf->layer_specific == 0) 1256 { 1257 p_dlcb->num_rx_i_pdu--; 1258 } 1259 1260 /* if read all of I PDU */ 1261 if (p_buf->len == 0) 1262 { 1263 GKI_dequeue (&p_dlcb->i_rx_q); 1264 GKI_freebuf (p_buf); 1265 1266 /* decrease number of received I PDU in in all of ui_rx_q and check rx congestion status */ 1267 llcp_cb.total_rx_i_pdu--; 1268 llcp_util_check_rx_congested_status (); 1269 } 1270 } 1271 1272 /* if getting out of rx congestion */ 1273 if ( (!p_dlcb->local_busy) 1274 &&(p_dlcb->is_rx_congested) 1275 &&(p_dlcb->num_rx_i_pdu <= p_dlcb->rx_congest_threshold / 2) ) 1276 { 1277 /* send RR */ 1278 p_dlcb->is_rx_congested = FALSE; 1279 p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR; 1280 } 1281 1282 /* if there is more I PDU in rx queue */ 1283 if (p_dlcb->i_rx_q.p_first) 1284 { 1285 return (TRUE); 1286 } 1287 else 1288 { 1289 return (FALSE); 1290 } 1291 } 1292 else 1293 { 1294 LLCP_TRACE_ERROR0 ("LLCP_ReadDataLinkData (): No data link connection"); 1295 1296 return (FALSE); 1297 } 1298 } 1299 1300 /******************************************************************************* 1301 ** 1302 ** Function LLCP_FlushDataLinkRxData 1303 ** 1304 ** Description Discard received data in data link connection 1305 ** 1306 ** 1307 ** Returns length of rx data flushed 1308 ** 1309 *******************************************************************************/ 1310 UINT32 LLCP_FlushDataLinkRxData (UINT8 local_sap, 1311 UINT8 remote_sap) 1312 { 1313 tLLCP_DLCB *p_dlcb; 1314 BT_HDR *p_buf; 1315 UINT32 flushed_length = 0; 1316 UINT8 *p_i_pdu; 1317 UINT16 i_pdu_length; 1318 1319 LLCP_TRACE_API2 ("LLCP_FlushDataLinkRxData () Local SAP:0x%x, Remote SAP:0x%x", 1320 local_sap, remote_sap); 1321 1322 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1323 1324 if (p_dlcb) 1325 { 1326 /* if any I PDU in rx queue */ 1327 while (p_dlcb->i_rx_q.p_first) 1328 { 1329 p_buf = (BT_HDR *) p_dlcb->i_rx_q.p_first; 1330 p_i_pdu = (UINT8*) (p_buf + 1) + p_buf->offset; 1331 1332 /* get length of I PDU */ 1333 BE_STREAM_TO_UINT16 (i_pdu_length, p_i_pdu); 1334 1335 flushed_length += (UINT32) (i_pdu_length - p_buf->layer_specific); 1336 1337 /* move to next I PDU if any */ 1338 p_buf->layer_specific = 0; /* offset */ 1339 p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + i_pdu_length; 1340 p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + i_pdu_length; 1341 1342 /* if read all of I PDU */ 1343 if (p_buf->len == 0) 1344 { 1345 GKI_dequeue (&p_dlcb->i_rx_q); 1346 GKI_freebuf (p_buf); 1347 llcp_cb.total_rx_i_pdu--; 1348 } 1349 } 1350 1351 p_dlcb->num_rx_i_pdu = 0; 1352 1353 /* if getting out of rx congestion */ 1354 if ( (!p_dlcb->local_busy) 1355 &&(p_dlcb->is_rx_congested) ) 1356 { 1357 /* send RR */ 1358 p_dlcb->is_rx_congested = FALSE; 1359 p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR; 1360 } 1361 1362 /* number of received I PDU is decreased so check rx congestion status */ 1363 llcp_util_check_rx_congested_status (); 1364 } 1365 else 1366 { 1367 LLCP_TRACE_ERROR0 ("LLCP_FlushDataLinkRxData (): No data link connection"); 1368 } 1369 1370 return (flushed_length); 1371 } 1372 1373 /******************************************************************************* 1374 ** 1375 ** Function LLCP_DisconnectReq 1376 ** 1377 ** Description Disconnect data link 1378 ** discard any pending data if flush is set to TRUE 1379 ** 1380 ** Returns LLCP_STATUS_SUCCESS if success 1381 ** 1382 *******************************************************************************/ 1383 tLLCP_STATUS LLCP_DisconnectReq (UINT8 local_sap, 1384 UINT8 remote_sap, 1385 BOOLEAN flush) 1386 { 1387 tLLCP_STATUS status; 1388 tLLCP_DLCB *p_dlcb; 1389 1390 LLCP_TRACE_API3 ("LLCP_DisconnectReq () Local SAP:0x%x, Remote SAP:0x%x, flush=%d", 1391 local_sap, remote_sap, flush); 1392 1393 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1394 1395 if (p_dlcb) 1396 { 1397 status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_DISCONNECT_REQ, &flush); 1398 } 1399 else 1400 { 1401 LLCP_TRACE_ERROR0 ("LLCP_DisconnectReq (): No data link"); 1402 status = LLCP_STATUS_FAIL; 1403 } 1404 1405 return status; 1406 } 1407 1408 /******************************************************************************* 1409 ** 1410 ** Function LLCP_SetTxCompleteNtf 1411 ** 1412 ** Description This function is called to get LLCP_SERVICE_TX_COMPLETE 1413 ** when Tx queue is empty and all PDU is acked. 1414 ** This is one time event, so upper layer shall call this function 1415 ** again to get next LLCP_SERVICE_TX_COMPLETE. 1416 ** 1417 ** Returns LLCP_STATUS_SUCCESS if success 1418 ** 1419 *******************************************************************************/ 1420 tLLCP_STATUS LLCP_SetTxCompleteNtf (UINT8 local_sap, 1421 UINT8 remote_sap) 1422 { 1423 tLLCP_STATUS status; 1424 tLLCP_DLCB *p_dlcb; 1425 1426 LLCP_TRACE_API2 ("LLCP_SetTxCompleteNtf () Local SAP:0x%x, Remote SAP:0x%x", 1427 local_sap, remote_sap); 1428 1429 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1430 1431 if (p_dlcb) 1432 { 1433 /* set flag to notify upper later when tx complete */ 1434 p_dlcb->flags |= LLCP_DATA_LINK_FLAG_NOTIFY_TX_DONE; 1435 status = LLCP_STATUS_SUCCESS; 1436 } 1437 else 1438 { 1439 LLCP_TRACE_ERROR0 ("LLCP_SetTxCompleteNtf (): No data link"); 1440 status = LLCP_STATUS_FAIL; 1441 } 1442 1443 return status; 1444 } 1445 1446 /******************************************************************************* 1447 ** 1448 ** Function LLCP_SetLocalBusyStatus 1449 ** 1450 ** Description Set local busy status 1451 ** 1452 ** 1453 ** Returns LLCP_STATUS_SUCCESS if success 1454 ** 1455 *******************************************************************************/ 1456 tLLCP_STATUS LLCP_SetLocalBusyStatus (UINT8 local_sap, 1457 UINT8 remote_sap, 1458 BOOLEAN is_busy) 1459 { 1460 tLLCP_STATUS status; 1461 tLLCP_DLCB *p_dlcb; 1462 1463 LLCP_TRACE_API2 ("LLCP_SetLocalBusyStatus () Local SAP:0x%x, is_busy=%d", 1464 local_sap, is_busy); 1465 1466 p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap); 1467 1468 if (p_dlcb) 1469 { 1470 if (p_dlcb->local_busy != is_busy) 1471 { 1472 p_dlcb->local_busy = is_busy; 1473 1474 /* send RR or RNR with valid sequence */ 1475 p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR; 1476 1477 if (is_busy == FALSE) 1478 { 1479 if (p_dlcb->i_rx_q.count) 1480 { 1481 llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_PEER_DATA_IND, NULL); 1482 } 1483 } 1484 } 1485 status = LLCP_STATUS_SUCCESS; 1486 } 1487 else 1488 { 1489 LLCP_TRACE_ERROR0 ("LLCP_SetLocalBusyStatus (): No data link"); 1490 status = LLCP_STATUS_FAIL; 1491 } 1492 1493 return status; 1494 } 1495 1496 /******************************************************************************* 1497 ** 1498 ** Function LLCP_GetRemoteWKS 1499 ** 1500 ** Description Return well-known service bitmap of connected device 1501 ** 1502 ** 1503 ** Returns WKS bitmap if success 1504 ** 1505 *******************************************************************************/ 1506 UINT16 LLCP_GetRemoteWKS (void) 1507 { 1508 LLCP_TRACE_API1 ("LLCP_GetRemoteWKS () WKS:0x%04x", 1509 (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) ? llcp_cb.lcb.peer_wks :0); 1510 1511 if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) 1512 return (llcp_cb.lcb.peer_wks); 1513 else 1514 return (0); 1515 } 1516 1517 /******************************************************************************* 1518 ** 1519 ** Function LLCP_GetRemoteLSC 1520 ** 1521 ** Description Return link service class of connected device 1522 ** 1523 ** 1524 ** Returns link service class 1525 ** 1526 *******************************************************************************/ 1527 UINT8 LLCP_GetRemoteLSC (void) 1528 { 1529 LLCP_TRACE_API1 ("LLCP_GetRemoteLSC () LSC:0x%x", 1530 (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) 1531 ? llcp_cb.lcb.peer_opt & (LLCP_LSC_1 | LLCP_LSC_2) :0); 1532 1533 if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) 1534 return (llcp_cb.lcb.peer_opt & (LLCP_LSC_1 | LLCP_LSC_2)); 1535 else 1536 return (LLCP_LSC_UNKNOWN); 1537 } 1538 1539 /******************************************************************************* 1540 ** 1541 ** Function LLCP_GetLinkMIU 1542 ** 1543 ** Description Return local and remote link MIU 1544 ** 1545 ** 1546 ** Returns None 1547 ** 1548 *******************************************************************************/ 1549 LLCP_API void LLCP_GetLinkMIU (UINT16 *p_local_link_miu, 1550 UINT16 *p_remote_link_miu) 1551 { 1552 LLCP_TRACE_API0 ("LLCP_GetLinkMIU ()"); 1553 1554 if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) 1555 { 1556 *p_local_link_miu = llcp_cb.lcb.local_link_miu; 1557 *p_remote_link_miu = llcp_cb.lcb.effective_miu; 1558 } 1559 else 1560 { 1561 *p_local_link_miu = 0; 1562 *p_remote_link_miu = 0; 1563 } 1564 1565 LLCP_TRACE_DEBUG2 ("LLCP_GetLinkMIU (): local_link_miu = %d, remote_link_miu = %d", 1566 *p_local_link_miu, *p_remote_link_miu); 1567 } 1568 1569 /******************************************************************************* 1570 ** 1571 ** Function LLCP_DiscoverService 1572 ** 1573 ** Description Return SAP of service name in connected device through callback 1574 ** 1575 ** 1576 ** Returns LLCP_STATUS_SUCCESS if success 1577 ** 1578 *******************************************************************************/ 1579 tLLCP_STATUS LLCP_DiscoverService (char *p_name, 1580 tLLCP_SDP_CBACK *p_cback, 1581 UINT8 *p_tid) 1582 { 1583 tLLCP_STATUS status; 1584 UINT8 i; 1585 1586 LLCP_TRACE_API1 ("LLCP_DiscoverService () Service Name:%s", 1587 p_name); 1588 1589 if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED) 1590 { 1591 LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Link is not activated"); 1592 return LLCP_STATUS_FAIL; 1593 } 1594 1595 if (!p_cback) 1596 { 1597 LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Callback must be provided."); 1598 return LLCP_STATUS_FAIL; 1599 } 1600 1601 /* if peer version is less than V1.1 then SNL is not supported */ 1602 if ((llcp_cb.lcb.agreed_major_version == 0x01) && (llcp_cb.lcb.agreed_minor_version < 0x01)) 1603 { 1604 LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Peer doesn't support SNL"); 1605 return LLCP_STATUS_FAIL; 1606 } 1607 1608 for (i = 0; i < LLCP_MAX_SDP_TRANSAC; i++) 1609 { 1610 if (!llcp_cb.sdp_cb.transac[i].p_cback) 1611 { 1612 llcp_cb.sdp_cb.transac[i].tid = llcp_cb.sdp_cb.next_tid; 1613 llcp_cb.sdp_cb.next_tid++; 1614 llcp_cb.sdp_cb.transac[i].p_cback = p_cback; 1615 1616 status = llcp_sdp_send_sdreq (llcp_cb.sdp_cb.transac[i].tid, p_name); 1617 1618 if (status == LLCP_STATUS_FAIL) 1619 { 1620 llcp_cb.sdp_cb.transac[i].p_cback = NULL; 1621 } 1622 1623 *p_tid = llcp_cb.sdp_cb.transac[i].tid; 1624 return (status); 1625 } 1626 } 1627 1628 LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Out of resource"); 1629 1630 return LLCP_STATUS_FAIL; 1631 } 1632 1633
