1 /* 2 * currBss.c 3 * 4 * Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name Texas Instruments nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /** \file currBss.c 35 * \brief Current BSS info 36 * 37 * \see currBss.h 38 */ 39 40 /**************************************************************************** 41 * * 42 * MODULE: Current BSS * 43 * PURPOSE: * 44 * Roaming ability of eSTA is implemented by Roaming Manager Component and 45 * described in "Roaming Manager module LLD" document, and by 46 * AP Connection module. AP Connection module implemented as two sub-modules. 47 * The major one is AP Connection, that is responsible for: 48 * - providing Roaming Manager with access to other parts of WLAN Driver, 49 * - implementing low levels of roaming mechanism. 50 * Current BSS sub-module takes care of: 51 * - maintaining database of current AP info, 52 * - providing access to database of current AP info. 53 * The Current BSS represents the BSS we are currently connected to. 54 * Among other parameters, it holds the capabilities of the current AP, 55 * its ID and its quality. 56 * When FW indicates 'Out of Sync' event, Current BSS module is responsible 57 * for awaking the device, sending unicast Probe request, waiting for 58 * response and - in case FW comes to the conclusion that there was 59 * no response - for triggering "Beacon missed" to AP Connection module. 60 * In eSTA5.0 FW updates and checks the quality of the connection with 61 * current AP. Current BSS module is responsible to handle event of type 62 * 'Low RSSI' from FW. Third type of roaming event reported by FW is 63 * 'Consecutive no ack on TX", and it is handled as well by Current 64 * BSS module.Upon reception of any roaming event from FW, Current BSS 65 * module is transferring this event to the AP Connection module in case 66 * of BSS connection, or to SME module in case of IBSS connection. 67 * When WLAN driver is working in IBSS mode, Current BSS module is holding 68 * the parameters of BSS (channel, band, SSID etc.). 69 * * 70 ****************************************************************************/ 71 72 #define __FILE_ID__ FILE_ID_65 73 #include "currBss.h" 74 #include "currBssApi.h" 75 #include "osApi.h" 76 #include "report.h" 77 #include "802_11Defs.h" 78 #include "DataCtrl_Api.h" 79 #include "qosMngr_API.h" 80 #include "regulatoryDomainApi.h" 81 #include "apConn.h" 82 #include "scanMngrApi.h" 83 #include "MacServices_api.h" 84 #include "smeApi.h" 85 #include "sme.h" 86 #include "TWDriver.h" 87 #include "EvHandler.h" 88 #include "DrvMainModules.h" 89 #include "siteMgrApi.h" 90 #include "connApi.h" 91 #include "roamingMngrTypes.h" 92 93 /* Constants */ 94 #define TRIGGER_LOW_RSSI_PACING 1000 95 #define TRIGGER_LOW_SNR_PACING 1000 96 #define TRIGGER_BG_SCAN_PACING 10 97 #define TRIGGER_BG_SCAN_HYSTERESIS 3 98 static const TI_UINT32 KEEP_ALIVE_NULL_DATA_INDEX = 3; 99 100 /* Enumerations */ 101 102 103 /* Typedefs */ 104 105 typedef TI_UINT8 (*currBSS_beaconRxCallb_t) (TI_HANDLE hModule, TI_UINT64 staTSF, TI_UINT8 dtimCount); 106 107 108 /* Structures */ 109 110 111 /* Internal functions prototypes */ 112 113 static void currBSS_lowRssiThrCrossed(currBSS_t *hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 114 static void currBSS_lowSnrThrCrossed(currBSS_t *hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 115 static void currBSS_BackgroundScanQuality(TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 116 static void currBSS_consecTxErrors(currBSS_t *hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 117 static void currBSS_BssLost (currBSS_t *hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 118 static void currBSS_reportRoamingEvent(currBSS_t *hCurrBSS, apConn_roamingTrigger_e roamingEventType, roamingEventData_u *pRoamingEventData); 119 static void currBSS_updateBSSLoss(currBSS_t *pCurrBSS); 120 121 static TI_STATUS currBss_HandleTriggerEvent(TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength, TI_UINT8 eventID); 122 static triggerDesc_t* currBss_findEmptyUserTrigger(TI_HANDLE hCurrBSS, TI_UINT16 clientID, TI_UINT8* triggerIdx); 123 static void currBSS_RssiSnrTrigger0 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 124 static void currBSS_RssiSnrTrigger1 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 125 static void currBSS_RssiSnrTrigger2 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 126 static void currBSS_RssiSnrTrigger3 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 127 static void currBSS_RssiSnrTrigger4 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 128 static void currBSS_RssiSnrTrigger5 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 129 static void currBSS_RssiSnrTrigger6 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 130 static void currBSS_RssiSnrTrigger7 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength); 131 132 /* Public functions implementation */ 133 134 135 136 /** 137 * 138 * currBSS_create 139 * 140 * \b Description: 141 * 142 * Create the Current BSS context: allocate memory for internal variables 143 * 144 * \b ARGS: 145 * 146 * I - hOS - the handle to the OS object 147 * 148 * \b RETURNS: 149 * 150 * TI_OK on success, TI_NOK on failure. 151 * 152 * \sa 153 */ 154 TI_HANDLE currBSS_create(TI_HANDLE hOs) 155 { 156 currBSS_t *pCurrBss; 157 158 if ((pCurrBss = os_memoryAlloc(hOs, sizeof(currBSS_t))) != NULL) 159 { 160 pCurrBss->hOs = hOs; 161 162 return pCurrBss; 163 } 164 else /* Failed to allocate control block */ 165 { 166 WLAN_OS_REPORT(("FATAL ERROR: currBSS_create(): Error allocating cb - aborting\n")); 167 return NULL; 168 } 169 } 170 171 172 /** 173 * 174 * currBSS_unload 175 * 176 * \b Description: 177 * 178 * Finish Current BSS module work. 179 * 180 * \b ARGS: 181 * 182 * 183 * \b RETURNS: 184 * 185 * TI_OK on success, TI_NOK on failure. 186 * 187 * \sa 188 */ 189 TI_STATUS currBSS_unload(TI_HANDLE hCurrBSS) 190 { 191 currBSS_t *pCurrBSS; 192 193 if (hCurrBSS != NULL) 194 { 195 pCurrBSS = (currBSS_t *)hCurrBSS; 196 197 /* Free pre-allocated control block */ 198 os_memoryFree(pCurrBSS->hOs, pCurrBSS, sizeof(currBSS_t)); 199 } 200 return TI_OK; 201 } 202 203 204 /** 205 * 206 * currBSS_init 207 * 208 * \b Description: 209 * 210 * Get other modules handles. 211 * 212 * \b ARGS: 213 * 214 * I pStadHandles - The driver modules handles 215 * 216 * \b RETURNS: 217 * 218 * void 219 * 220 * \sa 221 */ 222 void currBSS_init (TStadHandlesList *pStadHandles) 223 { 224 currBSS_t *pCurrBSS = (currBSS_t *)(pStadHandles->hCurrBss); 225 int i=0; 226 227 pCurrBSS->hAPConn = pStadHandles->hAPConnection; 228 pCurrBSS->hTWD = pStadHandles->hTWD; 229 pCurrBSS->hMlme = pStadHandles->hMlmeSm; 230 pCurrBSS->hPowerMngr = pStadHandles->hPowerMgr; 231 pCurrBSS->hSme = pStadHandles->hSme; 232 pCurrBSS->hSiteMgr = pStadHandles->hSiteMgr; 233 pCurrBSS->hConn = pStadHandles->hConn; 234 pCurrBSS->hReport = pStadHandles->hReport; 235 pCurrBSS->hScanMngr = pStadHandles->hScanMngr; 236 pCurrBSS->hEvHandler = pStadHandles->hEvHandler; 237 pCurrBSS->hTxCtrl = pStadHandles->hTxCtrl; 238 239 for (i=0; i< MAX_NUM_OF_RSSI_SNR_TRIGGERS ; i++) 240 { 241 pCurrBSS->aTriggersDesc[i].clientID = 0; 242 pCurrBSS->aTriggersDesc[i].fCB = NULL; 243 pCurrBSS->aTriggersDesc[i].hCB = NULL; 244 pCurrBSS->aTriggersDesc[i].WasRegisteredByApp = TI_FALSE; 245 246 } 247 } 248 249 250 /** 251 * 252 * currBSS_SetDefaults 253 * 254 * \b Description: 255 * 256 * Prepare Current BSS module to work 257 * 258 * \b ARGS: 259 * 260 * I - hCurrBSS - Current BSS handle \n 261 * 262 * \b RETURNS: 263 * 264 * TI_OK on success, TI_NOK on failure. 265 * 266 * \sa 267 */ 268 TI_STATUS currBSS_SetDefaults (TI_HANDLE hCurrBSS, TCurrBssInitParams *pInitParams) 269 { 270 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 271 TRroamingTriggerParams params; 272 RssiSnrTriggerCfg_t tTriggerCfg; 273 274 /* save the roaming operational mode */ 275 pCurrBSS->RoamingOperationalMode = pInitParams->RoamingOperationalMode; 276 277 /* Registration succeeded, continue with init procedure */ 278 pCurrBSS->band = RADIO_BAND_2_4_GHZ; 279 pCurrBSS->channel = 0; 280 pCurrBSS->isConnected = TI_FALSE; 281 pCurrBSS->type = BSS_ANY; 282 pCurrBSS->currAPInfo.RSSI = 0; 283 pCurrBSS->bUseSGParams = TI_FALSE; 284 pCurrBSS->uDefaultKeepAlivePeriod = pInitParams->uNullDataKeepAlivePeriod; 285 286 287 /* register the static callbacks */ 288 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_0,(void*) currBSS_RssiSnrTrigger0, pCurrBSS); 289 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_1,(void*) currBSS_RssiSnrTrigger1, pCurrBSS); 290 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_2,(void*) currBSS_RssiSnrTrigger2, pCurrBSS); 291 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_3,(void*) currBSS_RssiSnrTrigger3, pCurrBSS); 292 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_4,(void*) currBSS_RssiSnrTrigger4, pCurrBSS); 293 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_5,(void*) currBSS_RssiSnrTrigger5, pCurrBSS); 294 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_6,(void*) currBSS_RssiSnrTrigger6, pCurrBSS); 295 TWD_RegisterEvent(pCurrBSS->hTWD,TWD_OWN_EVENT_RSSI_SNR_TRIGGER_7,(void*) currBSS_RssiSnrTrigger7, pCurrBSS); 296 297 if (ROAMING_OPERATIONAL_MODE_AUTO == pCurrBSS->RoamingOperationalMode) 298 { 299 /* Configure and enable the Low RSSI, the Low SNR and the Missed beacon events */ 300 currBSS_RegisterTriggerEvent(hCurrBSS, TWD_OWN_EVENT_RSSI_SNR_TRIGGER_0, 0, (void*)currBSS_lowRssiThrCrossed, hCurrBSS); 301 currBSS_RegisterTriggerEvent(hCurrBSS, TWD_OWN_EVENT_RSSI_SNR_TRIGGER_1, 0, (void*)currBSS_lowSnrThrCrossed, hCurrBSS); 302 currBSS_RegisterTriggerEvent(hCurrBSS, TWD_OWN_EVENT_RSSI_SNR_TRIGGER_4, 0, (void*)currBSS_BackgroundScanQuality, hCurrBSS); 303 304 pCurrBSS->lowRssiThreshold = RSSI_DEFAULT_THRESHOLD; 305 tTriggerCfg.index = TRIGGER_EVENT_LOW_RSSI; 306 tTriggerCfg.threshold = pCurrBSS->lowRssiThreshold; 307 tTriggerCfg.pacing = TRIGGER_LOW_RSSI_PACING; 308 tTriggerCfg.metric = METRIC_EVENT_RSSI_BEACON; 309 tTriggerCfg.type = RX_QUALITY_EVENT_LEVEL; 310 tTriggerCfg.direction = RSSI_EVENT_DIR_LOW; 311 tTriggerCfg.hystersis = 0; 312 tTriggerCfg.enable = TI_TRUE; 313 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 314 315 pCurrBSS->lowSnrThreshold = SNR_DEFAULT_THRESHOLD; 316 tTriggerCfg.index = TRIGGER_EVENT_LOW_SNR; 317 tTriggerCfg.threshold = pCurrBSS->lowSnrThreshold; 318 tTriggerCfg.pacing = TRIGGER_LOW_SNR_PACING; 319 tTriggerCfg.metric = METRIC_EVENT_SNR_BEACON; 320 tTriggerCfg.type = RX_QUALITY_EVENT_LEVEL; 321 tTriggerCfg.direction = RSSI_EVENT_DIR_LOW; 322 tTriggerCfg.hystersis = 0; 323 tTriggerCfg.enable = TI_TRUE; 324 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 325 326 pCurrBSS->highQualityForBkgrdScan = RSSI_DEFAULT_THRESHOLD; 327 pCurrBSS->lowQualityForBkgrdScan = RSSI_DEFAULT_THRESHOLD; 328 tTriggerCfg.index = TRIGGER_EVENT_BG_SCAN; 329 tTriggerCfg.threshold = pCurrBSS->lowQualityForBkgrdScan; 330 tTriggerCfg.pacing = TRIGGER_BG_SCAN_PACING; 331 tTriggerCfg.metric = METRIC_EVENT_RSSI_DATA; 332 tTriggerCfg.type = RX_QUALITY_EVENT_EDGE; 333 tTriggerCfg.direction = RSSI_EVENT_DIR_BIDIR; 334 tTriggerCfg.hystersis = TRIGGER_BG_SCAN_HYSTERESIS; 335 tTriggerCfg.enable = TI_TRUE; 336 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 337 338 /* Register for 'BSS-Loss' event */ 339 TWD_RegisterEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_BSS_LOSE, (void *)currBSS_BssLost, pCurrBSS); 340 TWD_EnableEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_BSS_LOSE); 341 342 /* save last configured value for handling Soft Gemini changes */ 343 pCurrBSS->numExpectedTbttForBSSLoss = OUT_OF_SYNC_DEFAULT_THRESHOLD; 344 params.TsfMissThreshold = OUT_OF_SYNC_DEFAULT_THRESHOLD; 345 params.BssLossTimeout = NO_BEACON_DEFAULT_TIMEOUT; 346 TWD_CfgConnMonitParams (pCurrBSS->hTWD, ¶ms); 347 348 /* Register for 'Consec. Tx error' */ 349 TWD_RegisterEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_MAX_TX_RETRY, (void *)currBSS_consecTxErrors, pCurrBSS); 350 TWD_EnableEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_MAX_TX_RETRY); 351 352 pCurrBSS->maxTxRetryThreshold = NO_ACK_DEFAULT_THRESHOLD; 353 params.maxTxRetry = NO_ACK_DEFAULT_THRESHOLD; 354 TWD_CfgMaxTxRetry (pCurrBSS->hTWD, ¶ms); 355 } 356 357 return TI_OK; 358 } 359 360 361 /** 362 * 363 * currBSS_updateRoamingTriggers 364 * 365 * \b Description: 366 * 367 * Configure parameter of Current BSS 368 * 369 * \b ARGS: 370 * 371 * I - hCurrBSS - Current BSS handle \n 372 * I - params - pointer to datablock of roaming threshols \n 373 * 374 * \b RETURNS: 375 * 376 * TI_OK on success, TI_NOK on failure. 377 * 378 * \sa 379 */ 380 TI_STATUS currBSS_updateRoamingTriggers (TI_HANDLE hCurrBSS, roamingMngrThresholdsConfig_t *params) 381 { 382 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 383 TRroamingTriggerParams roamingTriggersParams; 384 RssiSnrTriggerCfg_t tTriggerCfg; 385 386 if (pCurrBSS->lowRssiThreshold != params->lowRssiThreshold) 387 { 388 pCurrBSS->lowRssiThreshold = params->lowRssiThreshold; 389 390 tTriggerCfg.index = TRIGGER_EVENT_LOW_RSSI; 391 tTriggerCfg.threshold = pCurrBSS->lowRssiThreshold; 392 tTriggerCfg.pacing = TRIGGER_LOW_RSSI_PACING; 393 tTriggerCfg.metric = METRIC_EVENT_RSSI_BEACON; 394 tTriggerCfg.type = RX_QUALITY_EVENT_LEVEL; 395 tTriggerCfg.direction = RSSI_EVENT_DIR_LOW; 396 tTriggerCfg.hystersis = 0; 397 tTriggerCfg.enable = TI_TRUE; 398 399 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 400 } 401 402 if (pCurrBSS->lowSnrThreshold != params->lowSnrThreshold) 403 { 404 pCurrBSS->lowSnrThreshold = params->lowSnrThreshold; 405 406 tTriggerCfg.index = TRIGGER_EVENT_LOW_SNR; 407 tTriggerCfg.threshold = pCurrBSS->lowSnrThreshold; 408 tTriggerCfg.pacing = TRIGGER_LOW_SNR_PACING; 409 tTriggerCfg.metric = METRIC_EVENT_SNR_BEACON; 410 tTriggerCfg.type = RX_QUALITY_EVENT_LEVEL; 411 tTriggerCfg.direction = RSSI_EVENT_DIR_LOW; 412 tTriggerCfg.hystersis = 0; 413 tTriggerCfg.enable = TI_TRUE; 414 415 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 416 } 417 418 if (pCurrBSS->lowQualityForBkgrdScan != params->lowQualityForBackgroungScanCondition) 419 { 420 pCurrBSS->lowQualityForBkgrdScan = params->lowQualityForBackgroungScanCondition; 421 tTriggerCfg.index = TRIGGER_EVENT_BG_SCAN; 422 tTriggerCfg.threshold = pCurrBSS->lowQualityForBkgrdScan; 423 tTriggerCfg.pacing = TRIGGER_BG_SCAN_PACING; 424 tTriggerCfg.metric = METRIC_EVENT_RSSI_DATA; 425 tTriggerCfg.type = RX_QUALITY_EVENT_EDGE; 426 tTriggerCfg.direction = RSSI_EVENT_DIR_BIDIR; 427 tTriggerCfg.hystersis = TRIGGER_BG_SCAN_HYSTERESIS; 428 tTriggerCfg.enable = TI_TRUE; 429 430 TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 431 } 432 433 if (pCurrBSS->numExpectedTbttForBSSLoss != params->numExpectedTbttForBSSLoss) 434 { 435 /* save last configured value for handling Soft Gemini changes */ 436 pCurrBSS->numExpectedTbttForBSSLoss = params->numExpectedTbttForBSSLoss; 437 /* Configure TWD with 'No BSS' thresholds (Same as the other parameters but in a special 438 function for the Soft Gemini module consideration) */ 439 currBSS_updateBSSLoss(pCurrBSS); 440 } 441 442 /* Configure TWD with 'Consecutive NACK' thresholds */ 443 if (pCurrBSS->maxTxRetryThreshold != params->dataRetryThreshold) 444 { 445 pCurrBSS->maxTxRetryThreshold = params->dataRetryThreshold; 446 roamingTriggersParams.maxTxRetry = pCurrBSS->maxTxRetryThreshold; 447 TWD_CfgMaxTxRetry (pCurrBSS->hTWD, &roamingTriggersParams); 448 } 449 450 pCurrBSS->highQualityForBkgrdScan = params->normalQualityForBackgroungScanCondition; 451 452 return TI_OK; 453 } 454 455 /** 456 * 457 * currBSS_getRoamingParams 458 * 459 * \b Description: 460 * 461 * Retrieves the roaming triggers stored in the CurrBSS module. 462 * 463 * \b ARGS: 464 * 465 * I - hCurrBSS - Current BSS handle \n 466 * O - aNumExpectedTbttForBSSLoss - Current BSS handle \n 467 * O - aLowQualityForBackgroungScanCondition - Current BSS handle \n 468 * O - aNormalQualityForBackgroungScanCondition - Current BSS handle \n 469 * 470 * \b RETURNS: 471 * 472 * TI_OK on success, TI_NOK on failure. 473 * 474 * \sa 475 */ 476 TI_STATUS currBSS_getRoamingParams(TI_HANDLE hCurrBSS, 477 TI_UINT8 * aNumExpectedTbttForBSSLoss, 478 TI_INT8 * aLowQualityForBackgroungScanCondition, 479 TI_INT8 * aNormalQualityForBackgroungScanCondition) 480 { 481 currBSS_t * pCurrBSS = (currBSS_t *) hCurrBSS; 482 483 *aNumExpectedTbttForBSSLoss = pCurrBSS->numExpectedTbttForBSSLoss; 484 *aLowQualityForBackgroungScanCondition = pCurrBSS->lowQualityForBkgrdScan; 485 *aNormalQualityForBackgroungScanCondition = pCurrBSS->highQualityForBkgrdScan; 486 487 return TI_OK; 488 } 489 490 /** 491 * 492 * currBSS_SGconfigureBSSLoss 493 * 494 * \b Description: 495 * 496 * This function is called by the Soft Gemini module in order to enable/disable the use of 497 * the compensation value for the BSSLoss count , and the percent of increasing that value 498 * It also set the new parameter to the FW (with another generic function) 499 * The compensation is needed since BT activity might over-run recieved beacons 500 * 501 * 502 * \b ARGS: 503 * 504 * I - hCurrBSS - Current BSS handle \n 505 * SGcompensationPercent - percent of increasing the BSSLoss value to the FW \n 506 * bUseSGParams - whether to use the SG compensation 507 * 508 * \b RETURNS: 509 * 510 * - 511 * 512 * \sa 513 */ 514 515 void currBSS_SGconfigureBSSLoss(TI_HANDLE hCurrBSS, 516 TI_UINT32 SGcompensationPercent , TI_BOOL bUseSGParams) 517 { 518 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 519 520 pCurrBSS->bUseSGParams = bUseSGParams; 521 pCurrBSS->SGcompensationPercent = SGcompensationPercent; 522 523 TRACE1(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, "CurrBSS_SGConf: SG =%d\n", pCurrBSS->bUseSGParams); 524 525 /* update the change of BSSLoss in the FW */ 526 currBSS_updateBSSLoss(pCurrBSS); 527 } 528 529 /** 530 * 531 * currBSS_updateBSSLoss 532 * 533 * \b Description: 534 * 535 * This function updates only BSS Loss parameter , we need it to be able to consider the 536 * Soft Gemini status , and change the parameter according to it 537 * 538 * \b ARGS: 539 * 540 * I - pCurrBSS - Current BSS handle \n 541 * 542 * \b RETURNS: 543 * 544 * - 545 * 546 * \sa 547 */ 548 void currBSS_updateBSSLoss(currBSS_t *pCurrBSS) 549 { 550 TRroamingTriggerParams roamingTriggersParams; 551 TI_UINT16 desiredBeaconInterval = 0; 552 TI_UINT32 connSelfTimeout = 0; 553 paramInfo_t *pParam; 554 555 pParam = (paramInfo_t *)os_memoryAlloc(pCurrBSS->hOs, sizeof(paramInfo_t)); 556 if (pParam) 557 { 558 pParam->paramType = SITE_MGR_DESIRED_BEACON_INTERVAL_PARAM; 559 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 560 desiredBeaconInterval = pParam->content.siteMgrDesiredBeaconInterval; 561 562 pParam->paramType = CONN_SELF_TIMEOUT_PARAM; 563 conn_getParam(pCurrBSS->hConn, pParam); 564 connSelfTimeout = pParam->content.connSelfTimeout; 565 566 os_memoryFree(pCurrBSS->hOs, pParam, sizeof(paramInfo_t)); 567 } 568 else 569 { 570 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_ERROR, "currBSS_updateBSSLoss: Error allocating paramInfo_t\n"); 571 } 572 573 if (pCurrBSS->type == BSS_INDEPENDENT) 574 { 575 if (desiredBeaconInterval > 0) 576 { 577 /* Calculate the number of beacons for miss timeout */ 578 roamingTriggersParams.TsfMissThreshold = connSelfTimeout / desiredBeaconInterval; 579 } 580 else 581 { 582 /* Use default parameter */ 583 roamingTriggersParams.TsfMissThreshold = OUT_OF_SYNC_IBSS_THRESHOLD; 584 } 585 } 586 else /* In Infra we use the saved parameter */ 587 { 588 roamingTriggersParams.TsfMissThreshold = pCurrBSS->numExpectedTbttForBSSLoss; 589 } 590 591 roamingTriggersParams.BssLossTimeout = NO_BEACON_DEFAULT_TIMEOUT; 592 593 TRACE2(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, ": SG=%d, Band=%d\n", pCurrBSS->bUseSGParams, pCurrBSS->currAPInfo.band); 594 595 /* if Soft Gemini is enabled - increase the BSSLoss value (because BT activity might over-run beacons) */ 596 if ((pCurrBSS->bUseSGParams) && (pCurrBSS->currAPInfo.band == RADIO_BAND_2_4_GHZ)) 597 { 598 roamingTriggersParams.TsfMissThreshold = (roamingTriggersParams.TsfMissThreshold * 599 (100 + pCurrBSS->SGcompensationPercent)) / 100; 600 601 TRACE2(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, ": old value = %d, new value (for SG compensation) = %d\n", pCurrBSS->numExpectedTbttForBSSLoss,roamingTriggersParams.TsfMissThreshold); 602 } 603 604 TWD_CfgConnMonitParams (pCurrBSS->hTWD, &roamingTriggersParams); 605 } 606 607 /** 608 * 609 * currBSS_swChFinished 610 * 611 * \b Description: 612 * 613 * Called when switch channel process is complete in order to reset RSSI calculations 614 * 615 * \b ARGS: 616 * 617 * I - hCurrBSS - Current BSS handle \n 618 * 619 * \b RETURNS: 620 * 621 * - 622 * 623 * \sa 624 */ 625 void currBSS_restartRssiCounting(TI_HANDLE hCurrBSS) 626 { 627 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 628 629 pCurrBSS->currAPInfo.RSSI = 0; 630 } 631 632 /** 633 * 634 * currBSS_getBssInfo 635 * 636 * \b Description: 637 * 638 * Get parameter of Current BSS 639 * 640 * \b ARGS: 641 * 642 * I - hCurrBSS - Current BSS handle \n 643 * 644 * \b RETURNS: 645 * 646 * pointer to current BSS info block. 647 * 648 * \sa 649 */ 650 bssEntry_t *currBSS_getBssInfo(TI_HANDLE hCurrBSS) 651 { 652 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 653 654 /* Return pointer to current AP info */ 655 return &(pCurrBSS->currAPInfo); 656 } 657 658 659 /** 660 * 661 * currBSS_probRespReceivedCallb 662 * 663 * \b Description: 664 * 665 * Callback function, provided to MLME module. Called each time Probe response received. 666 * This function verifies that the Probe response was sent by current AP, and then 667 * updates current AP database. 668 * 669 * \b ARGS: 670 * 671 * I - hCurrBSS - Current BSS handle \n 672 * 673 * \b RETURNS: 674 * 675 * TI_OK on success, TI_NOK on failure. 676 * 677 * \sa 678 */ 679 TI_STATUS currBSS_probRespReceivedCallb(TI_HANDLE hCurrBSS, 680 TRxAttr *pRxAttr, 681 TMacAddr *bssid, 682 mlmeFrameInfo_t *pFrameInfo, 683 TI_UINT8 *dataBuffer, 684 TI_UINT16 bufLength) 685 { 686 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 687 paramInfo_t *pParam; 688 689 pParam = (paramInfo_t *)os_memoryAlloc(pCurrBSS->hOs, sizeof(paramInfo_t)); 690 if (!pParam) 691 { 692 return TI_NOK; 693 } 694 pParam->paramType = SITE_MGR_CURRENT_BSSID_PARAM; 695 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 696 697 if (pCurrBSS->isConnected && MAC_EQUAL (pParam->content.siteMgrDesiredBSSID, *bssid)) 698 { 699 siteMgr_updateSite(pCurrBSS->hSiteMgr, bssid, pFrameInfo, pRxAttr->channel, (ERadioBand)pRxAttr->band, TI_FALSE); 700 /* Save the IE part of the Probe Response buffer in the site table */ 701 siteMgr_saveProbeRespBuffer(pCurrBSS->hSiteMgr, bssid, (TI_UINT8 *)dataBuffer, bufLength); 702 } 703 os_memoryFree(pCurrBSS->hOs, pParam, sizeof(paramInfo_t)); 704 return TI_OK; 705 } 706 707 708 709 /** 710 * 711 * currBSS_beaconReceivedCallb 712 * 713 * \b Description: 714 * 715 * Callback function, provided to MLME module. Called each time Beacon received. 716 * This function verifies that the Probe response was sent by current AP, and then 717 * updates current AP database. 718 * 719 * \b ARGS: 720 * 721 * I - hCurrBSS - Current BSS handle \n 722 * 723 * \b RETURNS: 724 * 725 * TI_OK on success, TI_NOK on failure. 726 * 727 * \sa 728 */ 729 TI_STATUS currBSS_beaconReceivedCallb(TI_HANDLE hCurrBSS, 730 TRxAttr *pRxAttr, 731 TMacAddr *bssid, 732 mlmeFrameInfo_t *pFrameInfo, 733 TI_UINT8 *dataBuffer, 734 TI_UINT16 bufLength) 735 { 736 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 737 paramInfo_t *pParam; 738 ScanBssType_e eFrameBssType, eCurrentBSSType; 739 TMacAddr desiredBSSID; 740 741 pParam = (paramInfo_t *)os_memoryAlloc(pCurrBSS->hOs, sizeof(paramInfo_t)); 742 if (!pParam) 743 { 744 return TI_NOK; 745 } 746 747 eFrameBssType = ((pFrameInfo->content.iePacket.capabilities >> CAP_ESS_SHIFT) & CAP_ESS_MASK) ? BSS_INFRASTRUCTURE : BSS_INDEPENDENT; 748 749 /* Get current BSS type */ 750 pParam->paramType = SITE_MGR_CURRENT_BSS_TYPE_PARAM; 751 siteMgr_getParam (pCurrBSS->hSiteMgr, pParam); 752 eCurrentBSSType = pParam->content.siteMgrCurrentBSSType; /* Save parameter because the next line overrides it */ 753 754 /* Get current BSSID */ 755 pParam->paramType = SITE_MGR_CURRENT_BSSID_PARAM; 756 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 757 TRACE12(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, 758 "currBSS_beaconReceivedCallb: bssid = %02x.%02x.%02x.%02x.%02x.%02x, siteMgrDesiredBSSID = %02x.%02x.%02x.%02x.%02x.%02x\n", 759 (*bssid)[0], (*bssid)[1], (*bssid)[2], (*bssid)[3], (*bssid)[4], (*bssid)[5], 760 pParam->content.siteMgrDesiredBSSID[0], 761 pParam->content.siteMgrDesiredBSSID[1], 762 pParam->content.siteMgrDesiredBSSID[2], 763 pParam->content.siteMgrDesiredBSSID[3], 764 pParam->content.siteMgrDesiredBSSID[4], 765 pParam->content.siteMgrDesiredBSSID[5]); 766 MAC_COPY(desiredBSSID, pParam->content.siteMgrDesiredBSSID); 767 768 if (pCurrBSS->isConnected && (eCurrentBSSType == eFrameBssType)) 769 { 770 TI_BOOL bFramePrivacy = 0, bCurrentSitePrivacy = 0; 771 /* if the bss type is ibss save set the current site privacy (the beacons transimted by STA) 772 and set the privacy from the received frame, so that if the privacy is different there will 773 be no connection */ 774 if (eFrameBssType == BSS_INDEPENDENT) 775 { 776 pParam->paramType = SITE_MGR_SITE_CAPABILITY_PARAM; 777 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 778 779 bCurrentSitePrivacy = ((pParam->content.siteMgrSiteCapability >> CAP_PRIVACY_SHIFT) & CAP_PRIVACY_MASK) ? TI_TRUE : TI_FALSE; 780 bFramePrivacy = ((pFrameInfo->content.iePacket.capabilities >> CAP_PRIVACY_SHIFT) & CAP_PRIVACY_MASK) ? TI_TRUE : TI_FALSE; 781 } 782 783 if (MAC_EQUAL(desiredBSSID, *bssid)) 784 { 785 if ((eFrameBssType == BSS_INFRASTRUCTURE) || 786 ((eFrameBssType == BSS_INDEPENDENT) && (bCurrentSitePrivacy == bFramePrivacy)) ) 787 { 788 siteMgr_updateSite(pCurrBSS->hSiteMgr, bssid, pFrameInfo, pRxAttr->channel, (ERadioBand)pRxAttr->band, TI_FALSE); 789 /* Save the IE part of the beacon buffer in the site table */ 790 siteMgr_saveBeaconBuffer(pCurrBSS->hSiteMgr, bssid, (TI_UINT8 *)dataBuffer, bufLength); 791 } 792 } 793 else if (eFrameBssType == BSS_INDEPENDENT) 794 { 795 /* Check if the Station sending the beacon uses privacy for the ibss and 796 compare it to the self site. If privacy usage mathces, merge ibss 797 and if not continue using self site */ 798 if (bCurrentSitePrivacy == bFramePrivacy) 799 { 800 siteMgr_IbssMerge(pCurrBSS->hSiteMgr, desiredBSSID, *bssid, 801 pFrameInfo, pRxAttr->channel, (ERadioBand)pRxAttr->band); 802 siteMgr_updateSite(pCurrBSS->hSiteMgr, bssid, pFrameInfo, pRxAttr->channel, (ERadioBand)pRxAttr->band, TI_FALSE); 803 siteMgr_saveBeaconBuffer(pCurrBSS->hSiteMgr, bssid, (TI_UINT8 *)dataBuffer, bufLength); 804 } 805 } 806 } 807 808 os_memoryFree(pCurrBSS->hOs, pParam, sizeof(paramInfo_t)); 809 return TI_OK; 810 } 811 812 813 /** 814 * 815 * currBSS_updateConnectedState 816 * 817 * \b Description: 818 * 819 * This function is called when FW recovery performed. 820 * 821 * \b ARGS: 822 * 823 * I - hCurrBSS - Current BSS handle \n 824 * I - isConnected - TI_TRUE or TI_FALSE \n 825 * I - type - IBSS or EBSS \n 826 * 827 * \b RETURNS: 828 * 829 * - 830 * 831 * \sa 832 */ 833 void currBSS_updateConnectedState(TI_HANDLE hCurrBSS, TI_BOOL isConnected, ScanBssType_e type) 834 { 835 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 836 837 pCurrBSS->type = type; 838 pCurrBSS->isConnected = isConnected; 839 840 if (isConnected) 841 { 842 /*** Store the info of current AP ***/ 843 paramInfo_t *pParam; 844 845 pParam = (paramInfo_t *)os_memoryAlloc(pCurrBSS->hOs, sizeof(paramInfo_t)); 846 if (!pParam) 847 { 848 return; 849 } 850 851 /* BSSID */ 852 pParam->paramType = SITE_MGR_CURRENT_BSSID_PARAM; 853 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 854 MAC_COPY (pCurrBSS->currAPInfo.BSSID, pParam->content.siteMgrDesiredBSSID); 855 856 /* Rx rate */ 857 pParam->paramType = SITE_MGR_LAST_RX_RATE_PARAM; 858 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 859 pCurrBSS->currAPInfo.rxRate = pParam->content.ctrlDataCurrentBasicRate; 860 861 /* Band */ 862 pParam->paramType = SITE_MGR_RADIO_BAND_PARAM; 863 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 864 pCurrBSS->currAPInfo.band = pParam->content.siteMgrRadioBand; 865 866 /* Channel */ 867 pParam->paramType = SITE_MGR_CURRENT_CHANNEL_PARAM; 868 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 869 pCurrBSS->currAPInfo.channel = pParam->content.siteMgrCurrentChannel; 870 871 /* Last Rx Tsf */ 872 pParam->paramType = SITE_MGR_CURRENT_TSF_TIME_STAMP; 873 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 874 os_memoryCopy(pCurrBSS->hOs, &pCurrBSS->currAPInfo.lastRxTSF, 875 pParam->content.siteMgrCurrentTsfTimeStamp, sizeof(pCurrBSS->currAPInfo.lastRxTSF)); 876 877 /* Beacon interval */ 878 pParam->paramType = SITE_MGR_BEACON_INTERVAL_PARAM; 879 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 880 pCurrBSS->currAPInfo.beaconInterval = pParam->content.beaconInterval; 881 882 /* Capability */ 883 pParam->paramType = SITE_MGR_SITE_CAPABILITY_PARAM; 884 siteMgr_getParam(pCurrBSS->hSiteMgr,pParam); 885 pCurrBSS->currAPInfo.capabilities = pParam->content.siteMgrSiteCapability; 886 pParam->paramType = SITE_MGR_CURRENT_TSF_TIME_STAMP; 887 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 888 889 /* pCurrBSS->currAPInfo.lastRxHostTimestamp = *((TI_UINT64 *)(pIEs->TimeStamp));*/ /* TBD*/ 890 os_memoryCopy(pCurrBSS->hOs, &pCurrBSS->currAPInfo.lastRxHostTimestamp, pParam->content.siteMgrCurrentTsfTimeStamp, sizeof(TI_UINT32)); 891 892 pParam->paramType = SITE_MGR_LAST_BEACON_BUF_PARAM; 893 siteMgr_getParam(pCurrBSS->hSiteMgr, pParam); 894 pCurrBSS->currAPInfo.pBuffer = pParam->content.siteMgrLastBeacon.buffer; 895 pCurrBSS->currAPInfo.bufferLength = pParam->content.siteMgrLastBeacon.bufLength; 896 pCurrBSS->currAPInfo.resultType = (pParam->content.siteMgrLastBeacon.isBeacon) ? SCAN_RFT_BEACON : SCAN_RFT_PROBE_RESPONSE; 897 898 /* Set BSS Loss to Fw - note that it depends on the Connection type - (Infa/IBSS) */ 899 currBSS_updateBSSLoss(pCurrBSS); 900 901 if(type == BSS_INFRASTRUCTURE) 902 { 903 TI_UINT32 uKeepAlivePreiod = pCurrBSS->uDefaultKeepAlivePeriod * 1000; /* convert to ms */ 904 TSetTemplate tKeepAliveTemplate; 905 TKeepAliveParams tKeepAliveParams; 906 907 /* 908 * only configure the null-data keepa-live message if the interval is valid 909 * (either the default interval or the one from teh XCC IE) 910 */ 911 if (0 != uKeepAlivePreiod) 912 { 913 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION , "currBSS_updateConnectedState: Configuring null-data keep-alive"); 914 915 /* build null-data template */ 916 tKeepAliveTemplate.ptr = &(pCurrBSS->keepAliveBuffer[ 0 ]); 917 if ( TI_OK != txCtrlServ_buildNullFrame (pCurrBSS->hTxCtrl, 918 tKeepAliveTemplate.ptr, &(tKeepAliveTemplate.len))) 919 { 920 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_ERROR , "currBSS_updateConnectedState: error building null data frame\n"); 921 922 } 923 924 /* configure null-data template */ 925 tKeepAliveTemplate.type = KEEP_ALIVE_TEMPLATE; 926 tKeepAliveTemplate.index = KEEP_ALIVE_NULL_DATA_INDEX; 927 tKeepAliveTemplate.uRateMask = RATE_MASK_UNSPECIFIED; 928 TWD_CmdTemplate (pCurrBSS->hTWD, &tKeepAliveTemplate, NULL, NULL); 929 930 /* configure paramters */ 931 tKeepAliveParams.index = KEEP_ALIVE_NULL_DATA_INDEX; 932 tKeepAliveParams.enaDisFlag = TI_TRUE; /* enabled */ 933 tKeepAliveParams.trigType = KEEP_ALIVE_TRIG_TYPE_NO_TX; 934 tKeepAliveParams.interval = uKeepAlivePreiod; 935 TWD_CfgKeepAlive (pCurrBSS->hTWD, &tKeepAliveParams); 936 } 937 } 938 os_memoryFree(pCurrBSS->hOs, pParam, sizeof(paramInfo_t)); 939 } 940 else 941 { 942 if(type == BSS_INFRASTRUCTURE) 943 { 944 TKeepAliveParams tKeepAliveParams; 945 946 /* disable NULL-data keep-palive template */ 947 tKeepAliveParams.index = KEEP_ALIVE_NULL_DATA_INDEX; 948 tKeepAliveParams.enaDisFlag = TI_FALSE; /* disabled */ 949 tKeepAliveParams.interval = 1000; /* minimum accepted by the FW */ 950 tKeepAliveParams.trigType = KEEP_ALIVE_TRIG_TYPE_NO_TX; 951 TWD_CfgKeepAlive (pCurrBSS->hTWD, &tKeepAliveParams); 952 953 } 954 } 955 } 956 957 958 /** 959 * 960 * currBSS_BssLost 961 * 962 * \b Description: 963 * 964 * Callback function, called upon BSS-Loss event from FW. 965 * 966 * \b ARGS: 967 * 968 * I - hCurrBSS - Current BSS handle \n 969 * 970 * \b RETURNS: 971 * 972 * void 973 * 974 * \sa 975 */ 976 static void currBSS_BssLost (currBSS_t *hCurrBSS, 977 TI_UINT8 *data, 978 TI_UINT8 dataLength) 979 { 980 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_BSS_LOSS, NULL); 981 } 982 983 984 /** 985 * 986 * currBSS_consecTxErrors 987 * 988 * \b Description: 989 * 990 * Callback function, provided to HAL module. 991 * 992 * \b ARGS: 993 * 994 * I - pCurrBSS - Current BSS handle \n 995 * 996 * \b RETURNS: 997 * 998 * TI_OK on success, TI_NOK on failure. 999 * 1000 * \sa 1001 */ 1002 static void currBSS_consecTxErrors(currBSS_t *hCurrBSS, 1003 TI_UINT8 *data, 1004 TI_UINT8 dataLength) 1005 { 1006 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_MAX_TX_RETRIES, NULL); 1007 } 1008 1009 1010 /** 1011 * 1012 * currBSS_lowRssiThrCrossed 1013 * 1014 * \b Description: 1015 * 1016 * Callback function, provided to HAL module. 1017 * 1018 * \b ARGS: 1019 * 1020 * I - pCurrBSS - Current BSS handle \n 1021 * 1022 * \b RETURNS: 1023 * 1024 * TI_OK on success, TI_NOK on failure. 1025 * 1026 * \sa 1027 */ 1028 static void currBSS_lowRssiThrCrossed(currBSS_t *hCurrBSS, 1029 TI_UINT8 *data, 1030 TI_UINT8 dataLength) 1031 { 1032 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_LOW_QUALITY, NULL); 1033 } 1034 1035 1036 /** 1037 * 1038 * currBSS_lowSnrThrCrossed 1039 * 1040 * \b Description: 1041 * 1042 * Callback function, provided to HAL module. 1043 * 1044 * \b ARGS: 1045 * 1046 * I - pCurrBSS - Current BSS handle \n 1047 * 1048 * \b RETURNS: 1049 * 1050 * TI_OK on success, TI_NOK on failure. 1051 * 1052 * \sa 1053 */ 1054 static void currBSS_lowSnrThrCrossed(currBSS_t *hCurrBSS, 1055 TI_UINT8 *data, 1056 TI_UINT8 dataLength) 1057 { 1058 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_LOW_SNR, NULL); 1059 } 1060 1061 /** 1062 * 1063 * currBSS_reportRoamingEvent 1064 * 1065 * \b Description: 1066 * 1067 * This function checks the mode of Current BSS module. 1068 * If connected to EBSS, it reports roaming event to AP Connection. 1069 * 1070 * \b ARGS: 1071 * 1072 * I - pCurrBSS - Current BSS handle \n 1073 * I - roamingEventType - Roaming trigger to report \n 1074 * 1075 * \b RETURNS: 1076 * 1077 * TI_OK on success, TI_NOK on failure. 1078 * 1079 * \sa 1080 */ 1081 static void currBSS_reportRoamingEvent(currBSS_t *pCurrBSS, 1082 apConn_roamingTrigger_e roamingEventType, 1083 roamingEventData_u *pRoamingEventData) 1084 { 1085 TRACE1(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, "currBSS_reportRoamingEvent: trigger %d\n", roamingEventType); 1086 1087 if (pCurrBSS->isConnected) 1088 { 1089 if (pCurrBSS->type == BSS_INFRASTRUCTURE) 1090 { 1091 apConn_reportRoamingEvent(pCurrBSS->hAPConn, roamingEventType, pRoamingEventData); 1092 } 1093 else /* IBSS */ 1094 { 1095 if( roamingEventType == ROAMING_TRIGGER_BSS_LOSS ) 1096 { 1097 /* If in IBSS call the SME restart function, this logic issues a DISCONNECT 1098 * event and tries to connect to other STA or establish self connection. 1099 */ 1100 sme_Restart (pCurrBSS->hSme); 1101 } 1102 } 1103 } 1104 } 1105 1106 1107 /** 1108 * 1109 * currBSS_GetDefaultKeepAlivePeriod 1110 * 1111 * \b Description: 1112 * 1113 * Get DefaultKeepAlivePeriod parameter value. 1114 * 1115 * \b ARGS: 1116 * 1117 * I - hCurrBSS - Current BSS handle \n 1118 * I - uDefaultKeepAlivePeriod - The value \n 1119 * 1120 * \b RETURNS: 1121 * 1122 * None. 1123 * 1124 * \sa 1125 */ 1126 void currBSS_GetDefaultKeepAlivePeriod (TI_HANDLE hCurrBSS, TI_UINT8* uKeepAlivePeriod) 1127 { 1128 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1129 1130 *uKeepAlivePeriod = pCurrBSS->uDefaultKeepAlivePeriod; 1131 } 1132 1133 1134 /** 1135 * 1136 * currBSS_BackgroundScanQuality 1137 * 1138 * \b Description: 1139 * 1140 * Called be EventMBox upon Background Scan Quality Trigger. 1141 * 1142 * \b ARGS: 1143 * 1144 * I - hCurrBSS - Current BSS handle \n 1145 * 1146 * \b RETURNS: 1147 * 1148 * None. 1149 * 1150 * \sa 1151 */ 1152 static void currBSS_BackgroundScanQuality(TI_HANDLE hCurrBSS, 1153 TI_UINT8 *data, 1154 TI_UINT8 dataLength) 1155 { 1156 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1157 TI_UINT8 averageRssi = *data; 1158 paramInfo_t *pParam; 1159 1160 TRACE1(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, "BackgroundScanQuality Event: RSSI = %d\n", averageRssi ); 1161 1162 /* Report to AP Connection about reaching RSSI low or normal (high) threshold */ 1163 if (averageRssi < pCurrBSS->lowQualityForBkgrdScan) 1164 { 1165 apConn_reportRoamingEvent(pCurrBSS->hAPConn, ROAMING_TRIGGER_LOW_QUALITY_FOR_BG_SCAN, NULL); 1166 } 1167 else 1168 { 1169 apConn_reportRoamingEvent(pCurrBSS->hAPConn, ROAMING_TRIGGER_NORMAL_QUALITY_FOR_BG_SCAN, NULL); 1170 } 1171 1172 /* Update RSSI: */ 1173 pCurrBSS->currAPInfo.RSSI = averageRssi; 1174 1175 /* Update Site Table in order to represent the RSSI of current AP correctly in the utility */ 1176 pParam = (paramInfo_t *)os_memoryAlloc(pCurrBSS->hOs, sizeof(paramInfo_t)); 1177 if (!pParam) 1178 { 1179 return; 1180 } 1181 pParam->paramType = SITE_MGR_CURRENT_SIGNAL_PARAM; 1182 pParam->content.siteMgrCurrentSignal.rssi = averageRssi; 1183 siteMgr_setParam(pCurrBSS->hSiteMgr, pParam); 1184 os_memoryFree(pCurrBSS->hOs, pParam, sizeof(paramInfo_t)); 1185 } 1186 1187 1188 /** 1189 * 1190 * currBss_findEmptyUserTrigger 1191 * 1192 * \b Description: 1193 * 1194 * Called be EventMBox upon Background Scan Quality Trigger. 1195 * 1196 * \b ARGS: 1197 * 1198 * I - hCurrBSS - Current BSS handle \n 1199 * 1200 * \b RETURNS: 1201 * 1202 * None. 1203 * 1204 * \sa 1205 */ 1206 static triggerDesc_t* currBss_findEmptyUserTrigger(TI_HANDLE hCurrBSS, TI_UINT16 clientID, TI_UINT8* triggerIdx) 1207 { 1208 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1209 TI_UINT8 i=0; 1210 1211 for (i=0; i< MAX_NUM_OF_RSSI_SNR_TRIGGERS ; i++) 1212 { 1213 if (clientID == pCurrBSS->aTriggersDesc[i].clientID || /* if the same client ID found, overwrite this trigger*/ 1214 (pCurrBSS->aTriggersDesc[i].WasRegisteredByApp == TI_FALSE && pCurrBSS->aTriggersDesc[i].fCB == NULL)) 1215 { 1216 *triggerIdx = i; 1217 return &pCurrBSS->aTriggersDesc[i]; 1218 } 1219 } 1220 1221 return NULL; 1222 } 1223 1224 1225 /** 1226 * \fn currBSS_RegisterTriggerEvent 1227 * \brief register the event in the currBss static table. 1228 * 1229 * \Args: 1230 * \param hCurrBSS - Current BSS handle 1231 * \param triggerID - The RSSI/SNR trigger ID as defined in the TWD. this arg is the table index. 1232 * \param clientID - The client ID, '0' value means internal driver module client 1233 * \param fCB - the trigger event handler. NULL value will be set for external app registration. 1234 * \return >= 0 if the empty Trigger event ID (index table) has been found and occupied 1235 else -1 to signal an error 1236 * \sa 1237 */ 1238 TI_INT8 currBSS_RegisterTriggerEvent (TI_HANDLE hCurrBSS, TI_UINT8 triggerID,TI_UINT16 clientID, void* fCB, TI_HANDLE hCB) 1239 { 1240 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1241 triggerDesc_t *pEmptyTrigger; 1242 TI_UINT8 emptyTriggerIdx = 0; 1243 1244 if (triggerID >= MAX_NUM_OF_RSSI_SNR_TRIGGERS) 1245 { 1246 TRACE1(pCurrBSS->hReport, REPORT_SEVERITY_ERROR , "currBSS_RegisterTriggerEvent: triggerID=%d is not in legal range \n", triggerID); 1247 return -1; 1248 } 1249 1250 TRACE3(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION, "currBSS_RegisterTriggerEvent: triggerID=%d, clientID=%d , fCB=%d. \n",triggerID, clientID ,fCB); 1251 1252 if(clientID > 0) /* this event is registered by application */ 1253 { 1254 pEmptyTrigger = currBss_findEmptyUserTrigger(hCurrBSS, clientID, &emptyTriggerIdx); 1255 if (pEmptyTrigger != NULL) 1256 { 1257 pEmptyTrigger->clientID = clientID; 1258 pEmptyTrigger->fCB = NULL; 1259 pEmptyTrigger->hCB = NULL; 1260 pEmptyTrigger->WasRegisteredByApp = TI_TRUE; 1261 } 1262 else 1263 { 1264 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_ERROR , "currBSS_RegisterTriggerEvent: Table is full!. no Empty trigger is available! \n"); 1265 return -1; 1266 } 1267 } 1268 else 1269 { 1270 pCurrBSS->aTriggersDesc[triggerID].clientID = 0; 1271 pCurrBSS->aTriggersDesc[triggerID].fCB = fCB; 1272 pCurrBSS->aTriggersDesc[triggerID].hCB = hCB; 1273 pCurrBSS->aTriggersDesc[triggerID].WasRegisteredByApp = TI_FALSE; 1274 } 1275 1276 TWD_EnableEvent (pCurrBSS->hTWD, triggerID); 1277 return emptyTriggerIdx; 1278 } 1279 1280 1281 1282 1283 /** 1284 * \fn currBss_HandleTriggerEvent 1285 * \brief called by the user trigger event callbcack. 1286 * 1287 * \Args: 1288 * \param hCurrBSS - Current BSS handle 1289 * \param data - The event data 1290 * \param dataLength - The event data length 1291 * \param eventID - The event ID 1292 * \return TI_STATUS 1293 * \sa 1294 */ 1295 static TI_STATUS currBss_HandleTriggerEvent(TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength, TI_UINT8 eventID) 1296 { 1297 triggerDesc_t *pTrigger; 1298 triggerDataEx_t triggerInfo; 1299 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1300 1301 TRACE1(pCurrBSS->hReport ,REPORT_SEVERITY_INFORMATION, "currBss_HandleTriggerEvent(). eventID =%d \n",eventID); 1302 1303 if (eventID < MAX_NUM_OF_RSSI_SNR_TRIGGERS) 1304 { 1305 pTrigger = &pCurrBSS->aTriggersDesc[eventID]; 1306 } 1307 else 1308 { 1309 return TI_NOK; 1310 } 1311 1312 if (TI_FALSE == pTrigger->WasRegisteredByApp) 1313 { 1314 ((TCurrBssDataCb)pTrigger->fCB)(pTrigger->hCB, data, dataLength); 1315 } 1316 else 1317 { 1318 triggerInfo.data = *data; /* RSSI_SNR Triggers - holds one byte only */ 1319 triggerInfo.clientID = pTrigger->clientID; 1320 EvHandlerSendEvent(pCurrBSS->hEvHandler, IPC_EVENT_RSSI_SNR_TRIGGER, (TI_UINT8*)&triggerInfo, sizeof(triggerInfo)); 1321 } 1322 1323 return TI_OK; 1324 } 1325 1326 /** 1327 * \fn currBSS_RssiSnrTrigger0-7 1328 * \brief User Defined Trigger 0-7 callbacks 1329 * 1330 * Called by EventMBox upon User Defined Trigger 0 - 7. 1331 * 1332 * \note 1333 * \param hCurrBSS - Current BSS handle 1334 * \param data - The event data 1335 * \param dataLength - The event data length 1336 * \return void 1337 * \sa 1338 */ 1339 1340 static void currBSS_RssiSnrTrigger0 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1341 { 1342 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_0; 1343 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1344 } 1345 static void currBSS_RssiSnrTrigger1 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1346 { 1347 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_1; 1348 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1349 } 1350 static void currBSS_RssiSnrTrigger2 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1351 { 1352 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_2; 1353 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1354 } 1355 static void currBSS_RssiSnrTrigger3 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1356 { 1357 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_3; 1358 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1359 } 1360 static void currBSS_RssiSnrTrigger4 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1361 { 1362 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_4; 1363 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1364 } 1365 static void currBSS_RssiSnrTrigger5 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1366 { 1367 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_5; 1368 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1369 } 1370 static void currBSS_RssiSnrTrigger6 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1371 { 1372 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_6; 1373 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1374 } 1375 static void currBSS_RssiSnrTrigger7 (TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1376 { 1377 TI_UINT8 eventID = TWD_OWN_EVENT_RSSI_SNR_TRIGGER_7; 1378 currBss_HandleTriggerEvent (hCurrBSS, data, dataLength, eventID); 1379 } 1380 1381 1382 static TI_STATUS currBSS_BssLossThresholdCrossed(TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1383 { 1384 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1385 1386 EvHandlerSendEvent(pCurrBSS->hEvHandler, IPC_EVENT_BSS_LOSS, data, dataLength); 1387 1388 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_BSS_LOSS, NULL); 1389 return TI_OK; 1390 } 1391 1392 static TI_STATUS currBSS_MaxTxRetryThresholdCrossed(TI_HANDLE hCurrBSS, TI_UINT8 *data, TI_UINT8 dataLength) 1393 { 1394 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1395 1396 EvHandlerSendEvent(pCurrBSS->hEvHandler, IPC_EVENT_TX_RETRY_FALIURE, data, dataLength); 1397 1398 currBSS_reportRoamingEvent(hCurrBSS, ROAMING_TRIGGER_BSS_LOSS, NULL); 1399 return TI_OK; 1400 } 1401 1402 1403 1404 TI_STATUS currBss_registerBssLossEvent(TI_HANDLE hCurrBSS,TI_UINT32 uNumOfBeacons, TI_UINT16 uClientID) 1405 { 1406 TRroamingTriggerParams params; 1407 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1408 1409 TRACE2(pCurrBSS->hReport,REPORT_SEVERITY_INFORMATION , "currBss_registerBssLossEvent() uNumOfBeacons=%d,uClientID =%d \n", uNumOfBeacons,uClientID ); 1410 1411 /* Register for 'BSS-Loss' event */ 1412 TWD_RegisterEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_BSS_LOSE, (void *)currBSS_BssLossThresholdCrossed, pCurrBSS); 1413 TWD_EnableEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_BSS_LOSE); 1414 1415 pCurrBSS->numExpectedTbttForBSSLoss = uNumOfBeacons; 1416 params.TsfMissThreshold = uNumOfBeacons; /* number of missing beacon allowed before out-of-sync event is issued*/ 1417 params.BssLossTimeout = NO_BEACON_DEFAULT_TIMEOUT; 1418 TWD_CfgConnMonitParams (pCurrBSS->hTWD, ¶ms); 1419 1420 return TI_OK; 1421 } 1422 1423 TI_STATUS currBss_registerTxRetryEvent(TI_HANDLE hCurrBSS,TI_UINT8 uMaxTxRetryThreshold, TI_UINT16 uClientID) 1424 { 1425 TRroamingTriggerParams params; 1426 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1427 1428 TRACE2(pCurrBSS->hReport,REPORT_SEVERITY_INFORMATION , "currBss_registerTxRetryEvent() uMaxTxRetryThreshold=%d,uClientID =%d \n", uMaxTxRetryThreshold,uClientID ); 1429 /* Register for 'Consec. Tx error' */ 1430 TWD_RegisterEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_MAX_TX_RETRY, (void *)currBSS_MaxTxRetryThresholdCrossed, pCurrBSS); 1431 TWD_EnableEvent (pCurrBSS->hTWD, TWD_OWN_EVENT_MAX_TX_RETRY); 1432 1433 pCurrBSS->maxTxRetryThreshold = uMaxTxRetryThreshold; 1434 params.maxTxRetry = uMaxTxRetryThreshold; 1435 TWD_CfgMaxTxRetry (pCurrBSS->hTWD, ¶ms); 1436 1437 return TI_OK; 1438 } 1439 1440 1441 1442 1443 1444 TI_STATUS currBSS_setParam(TI_HANDLE hCurrBSS, paramInfo_t *pParam) 1445 { 1446 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1447 TI_STATUS status = TI_OK; 1448 1449 if (pParam == NULL) 1450 { 1451 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_ERROR , " currBSS_setParam(): pParam is NULL!\n"); 1452 return TI_NOK; 1453 } 1454 1455 TRACE1(pCurrBSS->hReport,REPORT_SEVERITY_INFORMATION , "currBSS_setParam() %X \n", pParam->paramType); 1456 1457 switch (pParam->paramType) 1458 { 1459 case CURR_BSS_REGISTER_LINK_QUALITY_EVENT_PARAM: 1460 { 1461 TUserDefinedQualityTrigger *pUserTrigger = &pParam->content.rssiSnrTrigger; 1462 RssiSnrTriggerCfg_t tTriggerCfg; 1463 TI_INT8 triggerID = 0; 1464 1465 TRACE8(pCurrBSS->hReport, REPORT_SEVERITY_INFORMATION , "currBSS_setParam - USER_DEFINED_TRIGGER: \n index = %d, \n threshold = %d, \n pacing = %d, \n metric = %d, \n type = %d, \n direction = %d, \n hystersis = %d, \n enable = %d \n",pUserTrigger->uIndex,pUserTrigger->iThreshold,pUserTrigger->uPacing,pUserTrigger->uMetric,pUserTrigger->uType,pUserTrigger->uDirection,pUserTrigger->uHystersis,pUserTrigger->uEnable); 1466 /* Copy from user structure to driver structure */ 1467 tTriggerCfg.index = pUserTrigger->uIndex; 1468 tTriggerCfg.threshold = pUserTrigger->iThreshold; 1469 tTriggerCfg.pacing = pUserTrigger->uPacing; 1470 tTriggerCfg.metric = pUserTrigger->uMetric; 1471 tTriggerCfg.type = pUserTrigger->uType; 1472 tTriggerCfg.direction = pUserTrigger->uDirection; 1473 tTriggerCfg.hystersis = pUserTrigger->uHystersis; 1474 tTriggerCfg.enable = pUserTrigger->uEnable; 1475 1476 /* the registration request is not from EMP (clientID must be greater than 0) 1477 so it is probably external user mode application like the CLI that sends always '0' as client ID*/ 1478 if (pUserTrigger->uClientID == 0) 1479 { 1480 pUserTrigger->uClientID = pUserTrigger->uIndex + 1; /* use the index (starting from '0') as positive client ID*/ 1481 } 1482 /* Register the event and enable it before configuration. */ 1483 triggerID = currBSS_RegisterTriggerEvent(hCurrBSS, (TI_UINT8)0, pUserTrigger->uClientID, (void*)0, hCurrBSS); 1484 1485 if (triggerID < 0) 1486 { 1487 TRACE0(pCurrBSS->hReport, REPORT_SEVERITY_ERROR , "currBSS_setParam: RSSI/SNR user trigger registration FAILED!! \n"); 1488 return TI_NOK; 1489 } 1490 else 1491 { 1492 tTriggerCfg.index = (uint8)triggerID; /* the index is used for the eventMBox triggerID mapping*/ 1493 } 1494 /* Send user defined trigger to FW (the related FW events are handled by the currBSS) */ 1495 status = TWD_CfgRssiSnrTrigger (pCurrBSS->hTWD, &tTriggerCfg); 1496 1497 } 1498 break; 1499 1500 default: 1501 TRACE1(pCurrBSS->hReport, REPORT_SEVERITY_ERROR, "currBSS_setParam bad param= %X\n", pParam->paramType); 1502 break; 1503 } 1504 1505 return status; 1506 } 1507 1508 1509 TI_STATUS currBSS_getParam(TI_HANDLE hCurrBSS, paramInfo_t *pParam) 1510 { 1511 return TI_NOK; 1512 } 1513 1514 void currBss_DbgPrintTriggersTable(TI_HANDLE hCurrBSS) 1515 { 1516 #ifdef REPORT_LOG 1517 int i=0; 1518 currBSS_t *pCurrBSS = (currBSS_t *)hCurrBSS; 1519 1520 WLAN_OS_REPORT(("\n ------------------- Triggers Table -------------------------- \n")); 1521 1522 for (i=0; i< MAX_NUM_OF_RSSI_SNR_TRIGGERS ; i++) 1523 { 1524 WLAN_OS_REPORT(("\n TriggerIdx[%d]: clientID=%d , fCB=%d, WasRegisteredByApp=%d. \n", 1525 i, 1526 pCurrBSS->aTriggersDesc[i].clientID, 1527 pCurrBSS->aTriggersDesc[i].fCB, 1528 pCurrBSS->aTriggersDesc[i].WasRegisteredByApp)); 1529 } 1530 WLAN_OS_REPORT(("\n --------------------------------------------------------------- \n")); 1531 #endif 1532 } 1533
