Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1 | /* |
Jeff Johnson | 32d95a3 | 2012-09-10 13:15:23 -0700 | [diff] [blame] | 2 | * Copyright (c) 2012, The Linux Foundation. All rights reserved. |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * */ |
| 24 | /** ------------------------------------------------------------------------- * |
| 25 | ------------------------------------------------------------------------- * |
| 26 | |
| 27 | |
| 28 | \file csrNeighborRoam.c |
| 29 | |
| 30 | Implementation for the simple roaming algorithm for 802.11r Fast transitions and Legacy roaming for Android platform. |
| 31 | |
| 32 | Copyright (C) 2010 Qualcomm, Incorporated |
| 33 | |
| 34 | |
| 35 | ========================================================================== */ |
| 36 | |
| 37 | /*=========================================================================== |
| 38 | |
| 39 | EDIT HISTORY FOR FILE |
| 40 | |
| 41 | |
| 42 | This section contains comments describing changes made to the module. |
| 43 | Notice that changes are listed in reverse chronological order. |
| 44 | |
| 45 | |
| 46 | |
| 47 | when who what, where, why |
| 48 | ---------- --- -------------------------------------------------------- |
| 49 | 08/01/10 Murali Created |
| 50 | |
| 51 | ===========================================================================*/ |
| 52 | #ifdef WLAN_FEATURE_NEIGHBOR_ROAMING |
| 53 | #include "wlan_qct_wda.h" |
| 54 | #include "palApi.h" |
| 55 | #include "csrInsideApi.h" |
| 56 | #include "smsDebug.h" |
| 57 | #include "logDump.h" |
| 58 | #include "smeQosInternal.h" |
| 59 | #include "wlan_qct_tl.h" |
| 60 | #include "smeInside.h" |
| 61 | #include "vos_diag_core_event.h" |
| 62 | #include "vos_diag_core_log.h" |
| 63 | #include "csrApi.h" |
| 64 | #include "wlan_qct_tl.h" |
| 65 | #include "sme_Api.h" |
| 66 | #include "csrNeighborRoam.h" |
| 67 | #ifdef FEATURE_WLAN_CCX |
| 68 | #include "csrCcx.h" |
| 69 | #endif |
| 70 | |
| 71 | #define WLAN_FEATURE_NEIGHBOR_ROAMING_DEBUG 1 |
| 72 | #ifdef WLAN_FEATURE_NEIGHBOR_ROAMING_DEBUG |
| 73 | #define NEIGHBOR_ROAM_DEBUG smsLog |
| 74 | #else |
| 75 | #define NEIGHBOR_ROAM_DEBUG(x...) |
| 76 | #endif |
| 77 | |
| 78 | VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 79 | v_PVOID_t pUserCtxt); |
| 80 | VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 81 | v_PVOID_t pUserCtxt); |
| 82 | void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus); |
| 83 | eHalStatus csrRoamCopyConnectedProfile(tpAniSirGlobal pMac, tANI_U32 sessionId, tCsrRoamProfile *pDstProfile ); |
| 84 | |
| 85 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 86 | static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac); |
| 87 | VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac); |
| 88 | #endif |
| 89 | |
| 90 | /* State Transition macro */ |
| 91 | #define CSR_NEIGHBOR_ROAM_STATE_TRANSITION(newState)\ |
| 92 | {\ |
| 93 | pMac->roam.neighborRoamInfo.prevNeighborRoamState = pMac->roam.neighborRoamInfo.neighborRoamState;\ |
| 94 | pMac->roam.neighborRoamInfo.neighborRoamState = newState;\ |
| 95 | smsLog(pMac, LOGE, FL("Neighbor Roam Transition from state %d ==> %d"), pMac->roam.neighborRoamInfo.prevNeighborRoamState, newState);\ |
| 96 | } |
| 97 | |
| 98 | /* --------------------------------------------------------------------------- |
| 99 | |
| 100 | \fn csrNeighborRoamFreeNeighborRoamBSSNode |
| 101 | |
| 102 | \brief This function frees all the internal pointers CSR NeighborRoam BSS Info |
| 103 | and also frees the node itself |
| 104 | |
| 105 | \param pMac - The handle returned by macOpen. |
| 106 | neighborRoamBSSNode - Neighbor Roam BSS Node to be freed |
| 107 | |
| 108 | \return VOID |
| 109 | |
| 110 | ---------------------------------------------------------------------------*/ |
| 111 | void csrNeighborRoamFreeNeighborRoamBSSNode(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo neighborRoamBSSNode) |
| 112 | { |
| 113 | if (neighborRoamBSSNode) |
| 114 | { |
| 115 | if (neighborRoamBSSNode->pBssDescription) |
| 116 | { |
| 117 | vos_mem_free(neighborRoamBSSNode->pBssDescription); |
| 118 | neighborRoamBSSNode->pBssDescription = NULL; |
| 119 | } |
| 120 | vos_mem_free(neighborRoamBSSNode); |
| 121 | neighborRoamBSSNode = NULL; |
| 122 | } |
| 123 | |
| 124 | return; |
| 125 | } |
| 126 | |
| 127 | /* --------------------------------------------------------------------------- |
| 128 | |
| 129 | \fn csrNeighborRoamRemoveRoamableAPListEntry |
| 130 | |
| 131 | \brief This function removes a given entry from the given list |
| 132 | |
| 133 | \param pMac - The handle returned by macOpen. |
| 134 | pList - The list from which the entry should be removed |
| 135 | pNeighborEntry - Neighbor Roam BSS Node to be removed |
| 136 | |
| 137 | \return TRUE if successfully removed, else FALSE |
| 138 | |
| 139 | ---------------------------------------------------------------------------*/ |
| 140 | tANI_BOOLEAN csrNeighborRoamRemoveRoamableAPListEntry(tpAniSirGlobal pMac, |
| 141 | tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| 142 | { |
| 143 | if(pList) |
| 144 | { |
| 145 | return csrLLRemoveEntry(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| 146 | } |
| 147 | |
| 148 | smsLog(pMac, LOGE, FL("Removing neighbor BSS node from list failed. Current count = %d\n"), csrLLCount(pList)); |
| 149 | |
| 150 | return eANI_BOOLEAN_FALSE; |
| 151 | } |
| 152 | |
| 153 | /* --------------------------------------------------------------------------- |
| 154 | |
| 155 | \fn csrNeighborRoamGetRoamableAPListNextEntry |
| 156 | |
| 157 | \brief Gets the entry next to passed entry. If NULL is passed, return the entry in the head of the list |
| 158 | |
| 159 | \param pMac - The handle returned by macOpen. |
| 160 | pList - The list from which the entry should be returned |
| 161 | pNeighborEntry - Neighbor Roam BSS Node whose next entry should be returned |
| 162 | |
| 163 | \return Neighbor Roam BSS Node to be returned |
| 164 | |
| 165 | ---------------------------------------------------------------------------*/ |
| 166 | tpCsrNeighborRoamBSSInfo csrNeighborRoamGetRoamableAPListNextEntry(tpAniSirGlobal pMac, |
| 167 | tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| 168 | { |
| 169 | tListElem *pEntry = NULL; |
| 170 | tpCsrNeighborRoamBSSInfo pResult = NULL; |
| 171 | |
| 172 | if(pList) |
| 173 | { |
| 174 | if(NULL == pNeighborEntry) |
| 175 | { |
| 176 | pEntry = csrLLPeekHead(pList, LL_ACCESS_LOCK); |
| 177 | } |
| 178 | else |
| 179 | { |
| 180 | pEntry = csrLLNext(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| 181 | } |
| 182 | if(pEntry) |
| 183 | { |
| 184 | pResult = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | return pResult; |
| 189 | } |
| 190 | |
| 191 | /* --------------------------------------------------------------------------- |
| 192 | |
| 193 | \fn csrNeighborRoamFreeRoamableBSSList |
| 194 | |
| 195 | \brief Empties and frees all the nodes in the roamable AP list |
| 196 | |
| 197 | \param pMac - The handle returned by macOpen. |
| 198 | pList - Neighbor Roam BSS List to be emptied |
| 199 | |
| 200 | \return VOID |
| 201 | |
| 202 | ---------------------------------------------------------------------------*/ |
| 203 | void csrNeighborRoamFreeRoamableBSSList(tpAniSirGlobal pMac, tDblLinkList *pList) |
| 204 | { |
| 205 | tpCsrNeighborRoamBSSInfo pResult = NULL; |
| 206 | |
Mohit Khanna | 2386376 | 2012-09-11 17:40:09 -0700 | [diff] [blame^] | 207 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Emptying the BSS list. Current count = %d\n"), csrLLCount(pList)); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 208 | |
| 209 | /* Pick up the head, remove and free the node till the list becomes empty */ |
| 210 | while ((pResult = csrNeighborRoamGetRoamableAPListNextEntry(pMac, pList, NULL)) != NULL) |
| 211 | { |
| 212 | csrNeighborRoamRemoveRoamableAPListEntry(pMac, pList, pResult); |
| 213 | csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pResult); |
| 214 | } |
| 215 | return; |
| 216 | } |
| 217 | |
| 218 | /* --------------------------------------------------------------------------- |
| 219 | |
| 220 | \fn csrNeighborRoamReassocIndCallback |
| 221 | |
| 222 | \brief Reassoc callback invoked by TL on crossing the registered re-assoc threshold. |
| 223 | Directly triggere HO in case of non-11r association |
| 224 | In case of 11R association, triggers a pre-auth eventually followed by actual HO |
| 225 | |
| 226 | \param pAdapter - VOS Context |
| 227 | trafficStatus - UP/DOWN indication from TL |
| 228 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 229 | |
| 230 | \return VOID |
| 231 | |
| 232 | ---------------------------------------------------------------------------*/ |
| 233 | VOS_STATUS csrNeighborRoamReassocIndCallback(v_PVOID_t pAdapter, |
| 234 | v_U8_t trafficStatus, |
| 235 | v_PVOID_t pUserCtxt) |
| 236 | { |
| 237 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 238 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 239 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 240 | |
| 241 | smsLog(pMac, LOG1, FL("Reassoc indication callback called")); |
| 242 | |
| 243 | |
| 244 | //smsLog(pMac, LOGE, FL("Reassoc indication callback called at state %d"), pNeighborRoamInfo->neighborRoamState); |
| 245 | |
| 246 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 247 | |
| 248 | |
| 249 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 250 | WLANTL_HO_THRESHOLD_DOWN, |
| 251 | csrNeighborRoamReassocIndCallback, |
| 252 | VOS_MODULE_ID_SME); |
| 253 | |
| 254 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 255 | { |
| 256 | //err msg |
| 257 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 258 | } |
| 259 | |
| 260 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering UP event neighbor lookup callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 261 | /* Deregister reassoc callback. Ignore return status */ |
| 262 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 263 | WLANTL_HO_THRESHOLD_DOWN, |
| 264 | csrNeighborRoamNeighborLookupUPCallback, |
| 265 | VOS_MODULE_ID_SME); |
| 266 | |
| 267 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 268 | { |
| 269 | //err msg |
| 270 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 271 | } |
| 272 | |
| 273 | /* We dont need to run this timer any more. */ |
| 274 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 275 | |
| 276 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 277 | if (pNeighborRoamInfo->is11rAssoc) |
| 278 | { |
| 279 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 280 | { |
| 281 | csrNeighborRoamIssuePreauthReq(pMac); |
| 282 | } |
| 283 | else |
| 284 | { |
| 285 | smsLog(pMac, LOGE, FL("11R Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 286 | VOS_ASSERT(0); |
| 287 | } |
| 288 | } |
| 289 | else |
| 290 | #endif |
| 291 | |
| 292 | #ifdef FEATURE_WLAN_CCX |
| 293 | if (pNeighborRoamInfo->isCCXAssoc) |
| 294 | { |
| 295 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 296 | { |
| 297 | csrNeighborRoamIssuePreauthReq(pMac); |
| 298 | } |
| 299 | else |
| 300 | { |
| 301 | smsLog(pMac, LOGE, FL("CCX Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 302 | VOS_ASSERT(0); |
| 303 | } |
| 304 | } |
| 305 | else |
| 306 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 307 | #ifdef FEATURE_WLAN_LFR |
| 308 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 309 | { |
| 310 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 311 | { |
| 312 | csrNeighborRoamIssuePreauthReq(pMac); |
| 313 | } |
| 314 | else |
| 315 | { |
| 316 | smsLog(pMac, LOGE, FL("LFR Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 317 | VOS_ASSERT(0); |
| 318 | } |
| 319 | } |
| 320 | else |
| 321 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 322 | { |
| 323 | if (eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 324 | { |
| 325 | csrNeighborRoamRequestHandoff(pMac); |
| 326 | } |
| 327 | else |
| 328 | { |
| 329 | smsLog(pMac, LOGE, FL("Non-11R Reassoc indication received in unexpected state %d"), pNeighborRoamInfo->neighborRoamState); |
| 330 | VOS_ASSERT(0); |
| 331 | } |
| 332 | } |
| 333 | return VOS_STATUS_SUCCESS; |
| 334 | } |
| 335 | |
| 336 | /* --------------------------------------------------------------------------- |
| 337 | |
| 338 | \fn csrNeighborRoamResetConnectedStateControlInfo |
| 339 | |
| 340 | \brief This function will reset the neighbor roam control info data structures. |
| 341 | This function should be invoked whenever we move to CONNECTED state from |
| 342 | any state other than INIT state |
| 343 | |
| 344 | \param pMac - The handle returned by macOpen. |
| 345 | |
| 346 | \return VOID |
| 347 | |
| 348 | ---------------------------------------------------------------------------*/ |
| 349 | void csrNeighborRoamResetConnectedStateControlInfo(tpAniSirGlobal pMac) |
| 350 | { |
| 351 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 352 | |
| 353 | /* Do not reset the currentNeighborLookup Threshold here. The threshold and multiplier will be set before calling this API */ |
| 354 | if ((pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived == FALSE) && |
| 355 | (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels)) |
| 356 | { |
| 357 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 358 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| 359 | |
| 360 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 361 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 362 | |
| 363 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 364 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 365 | } |
| 366 | else |
| 367 | { |
| 368 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 369 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| 370 | } |
| 371 | |
| 372 | csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
| 373 | |
| 374 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 375 | |
| 376 | /* Abort any ongoing BG scans */ |
| 377 | if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending) |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 378 | { |
| 379 | if( pMac->roam.neighborRoamInfo.neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 380 | { |
| 381 | smsLog(pMac, LOGE, FL("Connected during scan state and we didn't" |
| 382 | "transition to state")); |
| 383 | VOS_ASSERT(0); |
| 384 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 385 | csrScanAbortMacScan(pMac); |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 386 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 387 | |
| 388 | pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| 389 | |
| 390 | /* We dont need to run this timer any more. */ |
| 391 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 392 | |
| 393 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 394 | /* Do not free up the preauth done list here */ |
| 395 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 396 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| 397 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 398 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| 399 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = 0; |
| 400 | vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 401 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer); |
| 402 | #endif |
| 403 | |
| 404 | } |
| 405 | |
| 406 | /* --------------------------------------------------------------------------- |
| 407 | |
| 408 | \fn csrNeighborRoamResetInitStateControlInfo |
| 409 | |
| 410 | \brief This function will reset the neighbor roam control info data structures. |
| 411 | This function should be invoked whenever we move to CONNECTED state from |
| 412 | INIT state |
| 413 | |
| 414 | \param pMac - The handle returned by macOpen. |
| 415 | |
| 416 | \return VOID |
| 417 | |
| 418 | ---------------------------------------------------------------------------*/ |
| 419 | void csrNeighborRoamResetInitStateControlInfo(tpAniSirGlobal pMac) |
| 420 | { |
| 421 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 422 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 423 | |
| 424 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 425 | |
| 426 | /* In addition to the above resets, we should clear off the curAPBssId/Session ID in the timers */ |
| 427 | pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID; |
| 428 | vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0); |
| 429 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 430 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 431 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 432 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE; |
| 433 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.pMac = pMac; |
| 434 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 435 | csrNeighborRoamPurgePreauthFailedList(pMac); |
| 436 | #endif |
| 437 | #ifdef FEATURE_WLAN_CCX |
| 438 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_FALSE; |
| 439 | pNeighborRoamInfo->isVOAdmitted = eANI_BOOLEAN_FALSE; |
| 440 | pNeighborRoamInfo->MinQBssLoadRequired = 0; |
| 441 | #endif |
| 442 | |
| 443 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 444 | /* Deregister reassoc callback. Ignore return status */ |
| 445 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 446 | WLANTL_HO_THRESHOLD_DOWN, |
| 447 | csrNeighborRoamReassocIndCallback, |
| 448 | VOS_MODULE_ID_SME); |
| 449 | |
| 450 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 451 | { |
| 452 | //err msg |
| 453 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 454 | } |
| 455 | |
| 456 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event neighborLookup callback with TL. RSSI = %d"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 457 | /* Deregister neighbor lookup callback. Ignore return status */ |
| 458 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 459 | WLANTL_HO_THRESHOLD_DOWN, |
| 460 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 461 | VOS_MODULE_ID_SME); |
| 462 | |
| 463 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 464 | { |
| 465 | //err msg |
| 466 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d\n"), vosStatus); |
| 467 | } |
| 468 | |
| 469 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering UP event neighbor lookup callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 470 | /* Deregister reassoc callback. Ignore return status */ |
| 471 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 472 | WLANTL_HO_THRESHOLD_UP, |
| 473 | csrNeighborRoamNeighborLookupUPCallback, |
| 474 | VOS_MODULE_ID_SME); |
| 475 | |
| 476 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 477 | { |
| 478 | //err msg |
| 479 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 480 | } |
| 481 | |
| 482 | /* Reset currentNeighborLookupThreshold only after deregistering DOWN event from TL */ |
| 483 | pNeighborRoamInfo->currentLookupIncrementMultiplier = 0; |
| 484 | pNeighborRoamInfo->currentNeighborLookupThreshold = pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| 485 | |
| 486 | return; |
| 487 | } |
| 488 | |
| 489 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 490 | /* --------------------------------------------------------------------------- |
| 491 | |
| 492 | \fn csrNeighborRoamBssIdScanFilter |
| 493 | |
| 494 | \brief This API is used to prepare a filter to obtain scan results when |
| 495 | we complete the scan in the REPORT_SCAN state after receiving a |
| 496 | valid neighbor report from AP. This filter includes BSSIDs received from |
| 497 | the neighbor report from the AP in addition to the other filter parameters |
| 498 | created from connected profile |
| 499 | |
| 500 | \param pMac - The handle returned by macOpen. |
| 501 | pScanFilter - Scan filter to be filled and returned |
| 502 | |
| 503 | \return eHAL_STATUS_SUCCESS on succesful filter creation, corresponding error |
| 504 | code otherwise |
| 505 | |
| 506 | ---------------------------------------------------------------------------*/ |
| 507 | static eHalStatus csrNeighborRoamBssIdScanFilter(tpAniSirGlobal pMac, tCsrScanResultFilter *pScanFilter) |
| 508 | { |
| 509 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 510 | tANI_U8 i = 0; |
| 511 | |
| 512 | VOS_ASSERT(pScanFilter != NULL); |
| 513 | vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| 514 | |
| 515 | pScanFilter->BSSIDs.numOfBSSIDs = pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport; |
| 516 | pScanFilter->BSSIDs.bssid = vos_mem_malloc(sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| 517 | if (NULL == pScanFilter->BSSIDs.bssid) |
| 518 | { |
| 519 | smsLog(pMac, LOGE, FL("Scan Filter BSSID mem alloc failed")); |
| 520 | return eHAL_STATUS_FAILED_ALLOC; |
| 521 | } |
| 522 | |
| 523 | vos_mem_zero(pScanFilter->BSSIDs.bssid, sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| 524 | |
| 525 | /* Populate the BSSID from Neighbor BSS info received from neighbor report */ |
| 526 | for (i = 0; i < pScanFilter->BSSIDs.numOfBSSIDs; i++) |
| 527 | { |
| 528 | vos_mem_copy(&pScanFilter->BSSIDs.bssid[i], |
| 529 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[i].neighborBssId, sizeof(tSirMacAddr)); |
| 530 | } |
| 531 | |
| 532 | /* Fill other general scan filter params */ |
| 533 | return csrNeighborRoamPrepareScanProfileFilter(pMac, pScanFilter); |
| 534 | } |
| 535 | |
| 536 | /* --------------------------------------------------------------------------- |
| 537 | |
| 538 | \fn csrNeighborRoamPurgePreauthFailList |
| 539 | |
| 540 | \brief This function empties the preauth fail list |
| 541 | |
| 542 | \param pMac - The handle returned by macOpen. |
| 543 | |
| 544 | \return VOID |
| 545 | |
| 546 | ---------------------------------------------------------------------------*/ |
| 547 | void csrNeighborRoamPurgePreauthFailList(tpAniSirGlobal pMac) |
| 548 | { |
| 549 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 550 | |
| 551 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Purging the preauth fail list")); |
| 552 | while (pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| 553 | { |
| 554 | vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress-1], |
| 555 | sizeof(tSirMacAddr)); |
| 556 | pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress--; |
| 557 | } |
| 558 | return; |
| 559 | } |
| 560 | |
| 561 | /* --------------------------------------------------------------------------- |
| 562 | |
| 563 | \fn csrNeighborRoamAddBssIdToPreauthFailList |
| 564 | |
| 565 | \brief This function adds the given BSSID to the Preauth fail list |
| 566 | |
| 567 | \param pMac - The handle returned by macOpen. |
| 568 | bssId - BSSID to be added to the preauth fail list |
| 569 | |
| 570 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 571 | |
| 572 | ---------------------------------------------------------------------------*/ |
| 573 | eHalStatus csrNeighborRoamAddBssIdToPreauthFailList(tpAniSirGlobal pMac, tSirMacAddr bssId) |
| 574 | { |
| 575 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 576 | |
| 577 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL(" Added BSSID %02x:%02x:%02x:%02x:%02x:%02x to Preauth failed list\n"), |
| 578 | bssId[0], bssId[1], bssId[2], bssId[3], bssId[4], bssId[5]); |
| 579 | |
| 580 | |
| 581 | if ((pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress + 1) > |
| 582 | MAX_NUM_PREAUTH_FAIL_LIST_ADDRESS) |
| 583 | { |
| 584 | smsLog(pMac, LOGE, FL("Preauth fail list already full.. Cannot add new one")); |
| 585 | return eHAL_STATUS_FAILURE; |
| 586 | } |
| 587 | vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress], |
| 588 | bssId, sizeof(tSirMacAddr)); |
| 589 | pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress++; |
| 590 | |
| 591 | return eHAL_STATUS_SUCCESS; |
| 592 | } |
| 593 | |
| 594 | /* --------------------------------------------------------------------------- |
| 595 | |
| 596 | \fn csrNeighborRoamIsPreauthCandidate |
| 597 | |
| 598 | \brief This function checks whether the given MAC address is already |
| 599 | present in the preauth fail list and returns TRUE/FALSE accordingly |
| 600 | |
| 601 | \param pMac - The handle returned by macOpen. |
| 602 | |
| 603 | \return eANI_BOOLEAN_TRUE if preauth candidate, eANI_BOOLEAN_FALSE otherwise |
| 604 | |
| 605 | ---------------------------------------------------------------------------*/ |
| 606 | tANI_BOOLEAN csrNeighborRoamIsPreauthCandidate(tpAniSirGlobal pMac, tSirMacAddr bssId) |
| 607 | { |
| 608 | tANI_U8 i = 0; |
| 609 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 610 | |
| 611 | if (0 == pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| 612 | return eANI_BOOLEAN_TRUE; |
| 613 | |
| 614 | for (i = 0; i < pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress; i++) |
| 615 | { |
| 616 | if (VOS_TRUE == vos_mem_compare(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[i], |
| 617 | bssId, sizeof(tSirMacAddr))) |
| 618 | { |
| 619 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("BSSID %02x:%02x:%02x:%02x:%02x:%02x already present in preauth fail list"), |
| 620 | bssId[0], bssId[1], bssId[2], bssId[3], bssId[4], bssId[5]); |
| 621 | return eANI_BOOLEAN_FALSE; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | return eANI_BOOLEAN_TRUE; |
| 626 | } |
| 627 | |
| 628 | /* --------------------------------------------------------------------------- |
| 629 | |
| 630 | \fn csrNeighborRoamIssuePreauthReq |
| 631 | |
| 632 | \brief This function issues preauth request to PE with the 1st AP entry in the |
| 633 | roamable AP list |
| 634 | |
| 635 | \param pMac - The handle returned by macOpen. |
| 636 | |
| 637 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 638 | |
| 639 | ---------------------------------------------------------------------------*/ |
| 640 | static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac) |
| 641 | { |
| 642 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 643 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 644 | tpCsrNeighborRoamBSSInfo pNeighborBssNode; |
| 645 | |
| 646 | /* This must not be true here */ |
| 647 | VOS_ASSERT(pNeighborRoamInfo->FTRoamInfo.preauthRspPending == eANI_BOOLEAN_FALSE); |
| 648 | |
| 649 | /* Issue Preauth request to PE here */ |
| 650 | /* Need to issue the preauth request with the BSSID that is there in the head of the roamable AP list */ |
| 651 | /* Parameters that should be passed are BSSID, Channel number and the neighborScanPeriod(probably) */ |
| 652 | /* If roamableAPList gets empty, should transition to REPORT_SCAN state */ |
| 653 | pNeighborBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 654 | |
| 655 | if (NULL == pNeighborBssNode) |
| 656 | { |
| 657 | smsLog(pMac, LOG1, FL("Roamable AP list is empty.. ")); |
| 658 | return eHAL_STATUS_FAILURE; |
| 659 | } |
| 660 | else |
| 661 | { |
| 662 | status = csrRoamIssueFTPreauthReq(pMac, pNeighborRoamInfo->csrSessionId, pNeighborBssNode->pBssDescription); |
| 663 | if (eHAL_STATUS_SUCCESS != status) |
| 664 | { |
| 665 | smsLog(pMac, LOGE, FL("Send Preauth request to PE failed with status %d\n"), status); |
| 666 | return status; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_TRUE; |
| 671 | |
| 672 | /* Increment the preauth retry count */ |
| 673 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries++; |
| 674 | |
| 675 | /* Transition the state to preauthenticating */ |
| 676 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) |
| 677 | |
| 678 | /* Start the preauth rsp timer */ |
| 679 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer, |
| 680 | CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 681 | eANI_BOOLEAN_FALSE); |
| 682 | if (eHAL_STATUS_SUCCESS != status) |
| 683 | { |
| 684 | smsLog(pMac, LOGE, FL("Preauth response wait timer start failed with status %d\n"), status); |
| 685 | return status; |
| 686 | } |
| 687 | |
| 688 | |
| 689 | return status; |
| 690 | } |
| 691 | |
| 692 | /* --------------------------------------------------------------------------- |
| 693 | |
| 694 | \fn csrNeighborRoamPreauthRspHandler |
| 695 | |
| 696 | \brief This function handle the Preauth response from PE |
| 697 | Every preauth is allowed max 3 tries if it fails. If a bssid failed |
| 698 | for more than MAX_TRIES, we will remove it from the list and try |
| 699 | with the next node in the roamable AP list and add the BSSID to pre-auth failed |
| 700 | list. If no more entries present in |
| 701 | roamable AP list, transition to REPORT_SCAN state |
| 702 | |
| 703 | \param pMac - The handle returned by macOpen. |
| 704 | vosStatus - VOS_STATUS_SUCCESS/FAILURE/TIMEOUT status from PE |
| 705 | |
| 706 | \return VOID |
| 707 | |
| 708 | ---------------------------------------------------------------------------*/ |
| 709 | void csrNeighborRoamPreauthRspHandler(tpAniSirGlobal pMac, VOS_STATUS vosStatus) |
| 710 | { |
| 711 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 712 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 713 | tpCsrNeighborRoamBSSInfo pPreauthRspNode = NULL; |
| 714 | |
| 715 | // We can receive it in these 2 states. |
| 716 | VOS_ASSERT((pNeighborRoamInfo->neighborRoamState == eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) || |
| 717 | (pNeighborRoamInfo->neighborRoamState == eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)); |
| 718 | |
| 719 | if ((pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) && |
| 720 | (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)) |
| 721 | { |
| 722 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Preauth response received in state %\n"), |
| 723 | pNeighborRoamInfo->neighborRoamState); |
| 724 | } |
| 725 | |
| 726 | if (VOS_STATUS_E_TIMEOUT != vosStatus) |
| 727 | { |
| 728 | /* This means we got the response from PE. Hence stop the timer */ |
| 729 | status = palTimerStop(pMac->hHdd, pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimer); |
| 730 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| 731 | } |
| 732 | |
| 733 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 734 | { |
| 735 | pPreauthRspNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 736 | } |
| 737 | if ((VOS_STATUS_SUCCESS == vosStatus) && (NULL != pPreauthRspNode)) |
| 738 | { |
| 739 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Preauth completed successfully after %d tries\n"), pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries); |
| 740 | |
| 741 | /* Preauth competer successfully. Insert the preauthenticated node to tail of preAuthDoneList */ |
| 742 | csrNeighborRoamRemoveRoamableAPListEntry(pMac, &pNeighborRoamInfo->roamableAPList, pPreauthRspNode); |
| 743 | csrLLInsertTail(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, &pPreauthRspNode->List, LL_ACCESS_LOCK); |
| 744 | |
| 745 | /* Pre-auth completed successfully. Transition to PREAUTH Done state */ |
| 746 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) |
| 747 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 748 | |
| 749 | /* The caller of this function would start a timer and by the time it expires, supplicant should |
| 750 | have provided the updated FTIEs to SME. So, when it expires, handoff will be triggered then */ |
| 751 | } |
| 752 | else |
| 753 | { |
| 754 | tpCsrNeighborRoamBSSInfo pNeighborBssNode = NULL; |
| 755 | tListElem *pEntry; |
| 756 | |
| 757 | smsLog(pMac, LOGE, FL("Preauth failed retry number %d, status = %d\n"), pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries, vosStatus); |
| 758 | |
| 759 | /* Preauth failed. Add the bssId to the preAuth failed list MAC Address. Also remove the AP from roamable AP list */ |
| 760 | if (pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries >= CSR_NEIGHBOR_ROAM_MAX_NUM_PREAUTH_RETRIES) |
| 761 | { |
| 762 | /* We are going to remove the node as it fails for more than MAX tries. Reset this count to 0 */ |
| 763 | pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| 764 | |
| 765 | /* The one in the head of the list should be one with which we issued pre-auth and failed */ |
| 766 | pEntry = csrLLRemoveHead(&pNeighborRoamInfo->roamableAPList, LL_ACCESS_LOCK); |
| 767 | if(pEntry) |
| 768 | { |
| 769 | pNeighborBssNode = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| 770 | /* Add the BSSID to pre-auth fail list */ |
| 771 | status = csrNeighborRoamAddBssIdToPreauthFailList(pMac, pNeighborBssNode->pBssDescription->bssId); |
| 772 | /* Now we can free this node */ |
| 773 | csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pNeighborBssNode); |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | /* Issue preauth request for the same/next entry */ |
| 778 | if (eHAL_STATUS_SUCCESS == csrNeighborRoamIssuePreauthReq(pMac)) |
| 779 | return; |
| 780 | |
| 781 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 782 | |
| 783 | /* Start the neighbor results refresh timer and transition to REPORT_SCAN state to perform scan again */ |
| 784 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 785 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT, |
| 786 | eANI_BOOLEAN_FALSE); |
| 787 | if (eHAL_STATUS_SUCCESS != status) |
| 788 | { |
| 789 | smsLog(pMac, LOGE, FL("Neighbor results refresh timer start failed with status %d\n"), status); |
| 790 | return; |
| 791 | } |
| 792 | } |
| 793 | } |
| 794 | #endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */ |
| 795 | |
| 796 | /* --------------------------------------------------------------------------- |
| 797 | |
| 798 | \fn csrNeighborRoamPrepareScanProfileFilter |
| 799 | |
| 800 | \brief This function creates a scan filter based on the currently connected profile. |
| 801 | Based on this filter, scan results are obtained |
| 802 | |
| 803 | \param pMac - The handle returned by macOpen. |
| 804 | pScanFilter - Populated scan filter based on the connected profile |
| 805 | |
| 806 | \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| 807 | |
| 808 | ---------------------------------------------------------------------------*/ |
| 809 | eHalStatus csrNeighborRoamPrepareScanProfileFilter(tpAniSirGlobal pMac, tCsrScanResultFilter *pScanFilter) |
| 810 | { |
| 811 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 812 | tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId; |
| 813 | tCsrRoamConnectedProfile *pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| 814 | tANI_U8 i = 0; |
| 815 | |
| 816 | VOS_ASSERT(pScanFilter != NULL); |
| 817 | |
| 818 | vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| 819 | |
| 820 | /* We dont want to set BSSID based Filter */ |
| 821 | pScanFilter->BSSIDs.numOfBSSIDs = 0; |
| 822 | |
| 823 | /* Populate all the information from the connected profile */ |
| 824 | pScanFilter->SSIDs.numOfSSIDs = 1; |
| 825 | pScanFilter->SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo)); |
| 826 | if (NULL == pScanFilter->SSIDs.SSIDList) |
| 827 | { |
| 828 | smsLog(pMac, LOGE, FL("Scan Filter SSID mem alloc failed")); |
| 829 | return eHAL_STATUS_FAILED_ALLOC; |
| 830 | } |
| 831 | pScanFilter->SSIDs.SSIDList->handoffPermitted = 1; |
| 832 | pScanFilter->SSIDs.SSIDList->ssidHidden = 0; |
| 833 | pScanFilter->SSIDs.SSIDList->SSID.length = pCurProfile->SSID.length; |
| 834 | vos_mem_copy((void *)pScanFilter->SSIDs.SSIDList->SSID.ssId, (void *)pCurProfile->SSID.ssId, pCurProfile->SSID.length); |
| 835 | |
| 836 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Filtering for SSID %s from scan results.. SSID Length = %d\n"), |
| 837 | pScanFilter->SSIDs.SSIDList->SSID.ssId, pScanFilter->SSIDs.SSIDList->SSID.length); |
| 838 | pScanFilter->authType.numEntries = 1; |
| 839 | pScanFilter->authType.authType[0] = pCurProfile->AuthType; |
| 840 | |
| 841 | pScanFilter->EncryptionType.numEntries = 1; //This must be 1 |
| 842 | pScanFilter->EncryptionType.encryptionType[0] = pCurProfile->EncryptionType; |
| 843 | |
| 844 | pScanFilter->mcEncryptionType.numEntries = 1; |
| 845 | pScanFilter->mcEncryptionType.encryptionType[0] = pCurProfile->mcEncryptionType; |
| 846 | |
| 847 | pScanFilter->BSSType = pCurProfile->BSSType; |
| 848 | |
| 849 | /* We are intrested only in the scan results on channels that we scanned */ |
| 850 | pScanFilter->ChannelInfo.numOfChannels = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; |
| 851 | pScanFilter->ChannelInfo.ChannelList = vos_mem_malloc(pScanFilter->ChannelInfo.numOfChannels * sizeof(tANI_U8)); |
| 852 | if (NULL == pScanFilter->ChannelInfo.ChannelList) |
| 853 | { |
| 854 | smsLog(pMac, LOGE, FL("Scan Filter Channel list mem alloc failed")); |
| 855 | vos_mem_free(pScanFilter->SSIDs.SSIDList); |
| 856 | pScanFilter->SSIDs.SSIDList = NULL; |
| 857 | return eHAL_STATUS_FAILED_ALLOC; |
| 858 | } |
| 859 | for (i = 0; i < pScanFilter->ChannelInfo.numOfChannels; i++) |
| 860 | { |
| 861 | pScanFilter->ChannelInfo.ChannelList[i] = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]; |
| 862 | } |
| 863 | |
| 864 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 865 | if (pNeighborRoamInfo->is11rAssoc) |
| 866 | { |
| 867 | /* MDIE should be added as a part of profile. This should be added as a part of filter as well */ |
| 868 | pScanFilter->MDID.mdiePresent = pCurProfile->MDID.mdiePresent; |
| 869 | pScanFilter->MDID.mobilityDomain = pCurProfile->MDID.mobilityDomain; |
| 870 | } |
| 871 | #endif |
| 872 | |
| 873 | return eHAL_STATUS_SUCCESS; |
| 874 | } |
| 875 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 876 | tANI_U32 csrGetCurrentAPRssi(tpAniSirGlobal pMac, tScanResultHandle *pScanResultList) |
| 877 | { |
| 878 | tCsrScanResultInfo *pScanResult; |
| 879 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 880 | tANI_U32 CurrAPRssi = -125; /* We are setting this as default value to make sure we return this value, |
| 881 | when we do not see this AP in the scan result for some reason.However,it is |
| 882 | less likely that we are associated to an AP and do not see it in the scan list*/ |
| 883 | |
| 884 | while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList))) |
| 885 | { |
| 886 | |
| 887 | if (VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| 888 | pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) |
| 889 | { |
| 890 | /* We got a match with the currently associated AP. |
| 891 | * Capture the RSSI value and complete the while loop. |
| 892 | * The while loop is completed in order to make the current entry go back to NULL, |
| 893 | * and in the next while loop, it properly starts searching from the head of the list. |
| 894 | * TODO: Can also try setting the current entry directly to NULL as soon as we find the new AP*/ |
| 895 | |
| 896 | CurrAPRssi = (int)pScanResult->BssDescriptor.rssi * (-1) ; |
| 897 | |
| 898 | } else { |
| 899 | continue; |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | return CurrAPRssi; |
| 904 | |
| 905 | } |
| 906 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 907 | /* --------------------------------------------------------------------------- |
| 908 | |
| 909 | \fn csrNeighborRoamProcessScanResults |
| 910 | |
| 911 | \brief This function extracts scan results, sorts on the basis of neighbor score(todo). |
| 912 | Assumed that the results are already sorted by RSSI by csrScanGetResult |
| 913 | |
| 914 | \param pMac - The handle returned by macOpen. |
| 915 | pScanResultList - Scan result result obtained from csrScanGetResult() |
| 916 | |
| 917 | \return VOID |
| 918 | |
| 919 | ---------------------------------------------------------------------------*/ |
| 920 | |
| 921 | static void csrNeighborRoamProcessScanResults(tpAniSirGlobal pMac, tScanResultHandle *pScanResultList) |
| 922 | { |
| 923 | tCsrScanResultInfo *pScanResult; |
| 924 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 925 | tpCsrNeighborRoamBSSInfo pBssInfo; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 926 | tANI_U32 CurrAPRssi; |
| 927 | tANI_U8 RoamRssiDiff = pMac->roam.configParam.RoamRssiDiff; |
| 928 | |
| 929 | /*************************************************************** |
| 930 | * Find out the Current AP RSSI and keep it handy to check if |
| 931 | * it is better than the RSSI of the AP which we are |
| 932 | * going to roam.If so, we are going to continue with the |
| 933 | * current AP. |
| 934 | ***************************************************************/ |
| 935 | CurrAPRssi = csrGetCurrentAPRssi(pMac, pScanResultList); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 936 | |
| 937 | /* Expecting the scan result already to be in the sorted order based on the RSSI */ |
| 938 | /* Based on the previous state we need to check whether the list should be sorted again taking neighbor score into consideration */ |
| 939 | /* If previous state is CFG_CHAN_LIST_SCAN, there should not be any neighbor score associated with any of the BSS. |
| 940 | If the previous state is REPORT_QUERY, then there will be neighbor score for each of the APs */ |
| 941 | /* For now, let us take the top of the list provided as it is by the CSR Scan result API. This means it is assumed that neighbor score |
| 942 | and rssi score are in the same order. This will be taken care later */ |
| 943 | |
| 944 | while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList))) |
| 945 | { |
| 946 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Scan result: BSSID : %02x:%02x:%02x:%02x:%02x:%02x"), |
| 947 | pScanResult->BssDescriptor.bssId[0], |
| 948 | pScanResult->BssDescriptor.bssId[1], |
| 949 | pScanResult->BssDescriptor.bssId[2], |
| 950 | pScanResult->BssDescriptor.bssId[3], |
| 951 | pScanResult->BssDescriptor.bssId[4], |
| 952 | pScanResult->BssDescriptor.bssId[5]); |
| 953 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 954 | if (VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 955 | pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) |
| 956 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 957 | /* currently associated AP. Do not have this in the roamable AP list */ |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 958 | continue; |
| 959 | } |
| 960 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 961 | /* This condition is to ensure to roam to an AP with better RSSI. if the value of RoamRssiDiff is Zero, this feature |
| 962 | * is disabled and we continue to roam without any check*/ |
| 963 | if(RoamRssiDiff > 0) |
| 964 | { |
| 965 | if (abs(CurrAPRssi) < abs(pScanResult->BssDescriptor.rssi)) |
| 966 | { |
| 967 | /*Do not roam to an AP with worse RSSI than the current*/ |
| 968 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 969 | "%s: [INFOLOG]Current AP rssi=%d new ap rssi worse=%d\n", __func__, |
| 970 | CurrAPRssi, |
| 971 | (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| 972 | continue; |
| 973 | } else { |
| 974 | /*Do not roam to an AP which is having better RSSI than the current AP, but still less than the |
| 975 | * margin that is provided by user from the ini file (RoamRssiDiff)*/ |
| 976 | if (abs(abs(CurrAPRssi) - abs(pScanResult->BssDescriptor.rssi)) < RoamRssiDiff) |
| 977 | { |
| 978 | continue; |
| 979 | } |
| 980 | else { |
| 981 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 982 | "%s: [INFOLOG]Current AP rssi=%d new ap rssi better=%d\n", __func__, |
| 983 | CurrAPRssi, |
| 984 | (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| 985 | } |
| 986 | } |
| 987 | } |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 988 | |
| 989 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 990 | if (pNeighborRoamInfo->is11rAssoc) |
| 991 | { |
| 992 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 993 | { |
| 994 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 995 | continue; |
| 996 | } |
| 997 | } |
| 998 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 999 | |
| 1000 | #ifdef FEATURE_WLAN_CCX |
| 1001 | if (pNeighborRoamInfo->isCCXAssoc) |
| 1002 | { |
| 1003 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 1004 | { |
| 1005 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 1006 | continue; |
| 1007 | } |
| 1008 | } |
| 1009 | if ((pScanResult->BssDescriptor.QBSSLoad_present) && |
| 1010 | (pScanResult->BssDescriptor.QBSSLoad_avail)) |
| 1011 | { |
| 1012 | if (pNeighborRoamInfo->isVOAdmitted) |
| 1013 | { |
| 1014 | smsLog(pMac, LOG1, FL("New AP has %x BW available\n"), (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail); |
| 1015 | smsLog(pMac, LOG1, FL("We need %x BW available\n"),(unsigned int)pNeighborRoamInfo->MinQBssLoadRequired); |
| 1016 | if (pScanResult->BssDescriptor.QBSSLoad_avail < pNeighborRoamInfo->MinQBssLoadRequired) |
| 1017 | { |
| 1018 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1019 | "[INFOLOG]BSSID : %02x:%02x:%02x:%02x:%02x:%02x has no bandwidth ignoring..not adding to roam list\n", |
| 1020 | pScanResult->BssDescriptor.bssId[0], |
| 1021 | pScanResult->BssDescriptor.bssId[1], |
| 1022 | pScanResult->BssDescriptor.bssId[2], |
| 1023 | pScanResult->BssDescriptor.bssId[3], |
| 1024 | pScanResult->BssDescriptor.bssId[4], |
| 1025 | pScanResult->BssDescriptor.bssId[5]); |
| 1026 | continue; |
| 1027 | } |
| 1028 | } |
| 1029 | } |
| 1030 | else |
| 1031 | { |
| 1032 | smsLog(pMac, LOGE, FL("No QBss %x %x\n"), (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail, (unsigned int)pScanResult->BssDescriptor.QBSSLoad_present); |
| 1033 | if (pNeighborRoamInfo->isVOAdmitted) |
| 1034 | { |
| 1035 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1036 | "[INFOLOG]BSSID : %02x:%02x:%02x:%02x:%02x:%02x has no QBSSLoad IE, ignoring..not adding to roam list\n", |
| 1037 | pScanResult->BssDescriptor.bssId[0], |
| 1038 | pScanResult->BssDescriptor.bssId[1], |
| 1039 | pScanResult->BssDescriptor.bssId[2], |
| 1040 | pScanResult->BssDescriptor.bssId[3], |
| 1041 | pScanResult->BssDescriptor.bssId[4], |
| 1042 | pScanResult->BssDescriptor.bssId[5]); |
| 1043 | continue; |
| 1044 | } |
| 1045 | } |
| 1046 | #endif /* FEATURE_WLAN_CCX */ |
| 1047 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1048 | #ifdef FEATURE_WLAN_LFR |
| 1049 | // If we are supporting legacy roaming, and |
| 1050 | // if the candidate is on the "pre-auth failed" list, ignore it. |
| 1051 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 1052 | { |
| 1053 | if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId)) |
| 1054 | { |
| 1055 | smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring")); |
| 1056 | continue; |
| 1057 | } |
| 1058 | } |
| 1059 | #endif /* FEATURE_WLAN_LFR */ |
| 1060 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1061 | /* If the received timestamp in BSS description is earlier than the scan request timestamp, skip |
| 1062 | * this result */ |
| 1063 | if (pNeighborRoamInfo->scanRequestTimeStamp >= pScanResult->BssDescriptor.nReceivedTime) |
| 1064 | { |
| 1065 | smsLog(pMac, LOGE, FL("Ignoring BSS as it is older than the scan request timestamp")); |
| 1066 | continue; |
| 1067 | } |
| 1068 | |
| 1069 | pBssInfo = vos_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| 1070 | if (NULL == pBssInfo) |
| 1071 | { |
| 1072 | smsLog(pMac, LOGE, FL("Memory allocation for Neighbor Roam BSS Info failed.. Just ignoring")); |
| 1073 | continue; |
| 1074 | } |
| 1075 | |
| 1076 | pBssInfo->pBssDescription = vos_mem_malloc(pScanResult->BssDescriptor.length + sizeof(pScanResult->BssDescriptor.length)); |
| 1077 | if (pBssInfo->pBssDescription != NULL) |
| 1078 | { |
| 1079 | vos_mem_copy(pBssInfo->pBssDescription, &pScanResult->BssDescriptor, |
| 1080 | pScanResult->BssDescriptor.length + sizeof(pScanResult->BssDescriptor.length)); |
| 1081 | } |
| 1082 | else |
| 1083 | { |
| 1084 | smsLog(pMac, LOGE, FL("Memory allocation for Neighbor Roam BSS Descriptor failed.. Just ignoring")); |
| 1085 | vos_mem_free(pBssInfo); |
| 1086 | continue; |
| 1087 | |
| 1088 | } |
| 1089 | pBssInfo->apPreferenceVal = 10; //some value for now. Need to calculate the actual score based on RSSI and neighbor AP score |
| 1090 | |
| 1091 | /* Just add to the end of the list as it is already sorted by RSSI */ |
| 1092 | csrLLInsertTail(&pNeighborRoamInfo->roamableAPList, &pBssInfo->List, LL_ACCESS_LOCK); |
| 1093 | } |
| 1094 | |
| 1095 | /* Now we have all the scan results in our local list. Good time to free up the the list we got as a part of csrGetScanResult */ |
| 1096 | csrScanResultPurge(pMac, *pScanResultList); |
| 1097 | |
| 1098 | return; |
| 1099 | } |
| 1100 | |
| 1101 | /* --------------------------------------------------------------------------- |
| 1102 | |
| 1103 | \fn csrNeighborRoamHandleEmptyScanResult |
| 1104 | |
| 1105 | \brief This function will be invoked in CFG_CHAN_LIST_SCAN state when |
| 1106 | there are no valid APs in the scan result for roaming. This means |
| 1107 | out AP is the best and no other AP is around. No point in scanning |
| 1108 | again and again. Performing the following here. |
| 1109 | 1. Deregister the pre-auth callback from TL |
| 1110 | 2. Stop the neighbor scan timer |
| 1111 | 3. Re-register the neighbor lookup callback with increased pre-auth threshold |
| 1112 | 4. Transition the state to CONNECTED state |
| 1113 | |
| 1114 | \param pMac - The handle returned by macOpen. |
| 1115 | |
| 1116 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1117 | |
| 1118 | ---------------------------------------------------------------------------*/ |
| 1119 | static VOS_STATUS csrNeighborRoamHandleEmptyScanResult(tpAniSirGlobal pMac) |
| 1120 | { |
| 1121 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 1122 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1123 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1124 | |
| 1125 | /* Stop the neighbor scan timer now */ |
| 1126 | status = palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 1127 | if (eHAL_STATUS_SUCCESS != status) |
| 1128 | { |
| 1129 | smsLog(pMac, LOGW, FL(" palTimerStop failed with status %d\n"), status); |
| 1130 | } |
| 1131 | |
| 1132 | /* Increase the neighbor lookup threshold by a constant factor or 1 */ |
| 1133 | if ((pNeighborRoamInfo->currentNeighborLookupThreshold+3) < pNeighborRoamInfo->cfgParams.neighborReassocThreshold) |
| 1134 | { |
| 1135 | pNeighborRoamInfo->currentNeighborLookupThreshold += 3; |
| 1136 | } |
| 1137 | |
| 1138 | |
| 1139 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1140 | /* Clear off the old neighbor report details */ |
| 1141 | vos_mem_zero(&pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 1142 | #endif |
| 1143 | |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 1144 | /* Transition to CONNECTED state */ |
| 1145 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 1146 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1147 | /* Reset all the necessary variables before transitioning to the CONNECTED state */ |
| 1148 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 1149 | |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 1150 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1151 | /* Re-register Neighbor Lookup threshold callback with TL */ |
| 1152 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event neighbor lookup callback with TL for RSSI = %d"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 1153 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 1154 | WLANTL_HO_THRESHOLD_DOWN, |
| 1155 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 1156 | VOS_MODULE_ID_SME, pMac); |
| 1157 | |
| 1158 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 1159 | { |
| 1160 | //err msg |
| 1161 | smsLog(pMac, LOGW, FL(" Couldn't re-register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d\n"), status); |
| 1162 | } |
| 1163 | return vosStatus; |
| 1164 | } |
| 1165 | |
| 1166 | /* --------------------------------------------------------------------------- |
| 1167 | |
| 1168 | \fn csrNeighborRoamScanRequestCallback |
| 1169 | |
| 1170 | \brief This function is the callback function registered in csrScanRequest() to |
| 1171 | indicate the completion of scan. If scan is completed for all the channels in |
| 1172 | the channel list, this function gets the scan result and starts the refresh results |
| 1173 | timer to avoid having stale results. If scan is not completed on all the channels, |
| 1174 | it restarts the neighbor scan timer which on expiry issues scan on the next |
| 1175 | channel |
| 1176 | |
| 1177 | \param halHandle - The handle returned by macOpen. |
| 1178 | pContext - not used |
| 1179 | scanId - not used |
| 1180 | status - not used |
| 1181 | |
| 1182 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1183 | |
| 1184 | ---------------------------------------------------------------------------*/ |
| 1185 | static eHalStatus csrNeighborRoamScanRequestCallback(tHalHandle halHandle, void *pContext, |
| 1186 | tANI_U32 scanId, eCsrScanStatus status) |
| 1187 | { |
| 1188 | tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| 1189 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1190 | tANI_U8 currentChanIndex; |
| 1191 | tCsrScanResultFilter scanFilter; |
| 1192 | tScanResultHandle scanResult; |
| 1193 | tANI_U32 tempVal = 0; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1194 | eHalStatus hstatus; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1195 | |
| 1196 | pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_FALSE; |
| 1197 | |
| 1198 | /* This can happen when we receive a UP event from TL in any of the scan states. Silently ignore it */ |
| 1199 | if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| 1200 | { |
| 1201 | smsLog(pMac, LOGE, FL("Received in CONNECTED state. Must be because a UP event from TL after issuing scan request. Ignore it")); |
| 1202 | return eHAL_STATUS_SUCCESS; |
| 1203 | } |
| 1204 | |
| 1205 | /* -1 is done because the chanIndex would have got incremented after issuing a successful scan request */ |
| 1206 | currentChanIndex = (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex) ? (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex - 1) : 0; |
| 1207 | |
| 1208 | /* Validate inputs */ |
| 1209 | if (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList) { |
| 1210 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("csrNeighborRoamScanRequestCallback received for Channel = %d, ChanIndex = %d"), |
| 1211 | pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList[currentChanIndex], currentChanIndex); |
| 1212 | } |
| 1213 | else |
| 1214 | { |
| 1215 | smsLog(pMac, LOG1, FL("Received during clean-up. Silently ignore scan completion event.")); |
| 1216 | return eHAL_STATUS_SUCCESS; |
| 1217 | } |
| 1218 | |
| 1219 | if (eANI_BOOLEAN_FALSE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress) |
| 1220 | { |
| 1221 | /* Scan is completed in the CFG_CHAN_SCAN state. We can transition to REPORT_SCAN state |
| 1222 | just to get the results and perform PREAUTH */ |
| 1223 | /* Now we have completed scanning the channel list. We have get the result by applying appropriate filter |
| 1224 | sort the results based on neighborScore and RSSI and select the best candidate out of the list */ |
| 1225 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Channel list scan completed. Current chan index = %d"), currentChanIndex); |
| 1226 | VOS_ASSERT(pNeighborRoamInfo->roamChannelInfo.currentChanIndex == 0); |
| 1227 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1228 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1229 | /* If the state is REPORT_SCAN, then this must be the scan after the REPORT_QUERY state. So, we |
| 1230 | should use the BSSID filter made out of neighbor reports */ |
| 1231 | if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| 1232 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1233 | hstatus = csrNeighborRoamBssIdScanFilter(pMac, &scanFilter); |
| 1234 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("11R or CCX Association: Prepare scan filter status with neighbor AP = %d"), hstatus); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1235 | tempVal = 1; |
| 1236 | } |
| 1237 | else |
| 1238 | #endif |
| 1239 | { |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1240 | hstatus = csrNeighborRoamPrepareScanProfileFilter(pMac, &scanFilter); |
| 1241 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("11R/CCX/Other Association: Prepare scan to find neighbor AP filter status = %d"), hstatus); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1242 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1243 | if (eHAL_STATUS_SUCCESS != hstatus) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1244 | { |
| 1245 | smsLog(pMac, LOGE, FL("Scan Filter preparation failed for Assoc type %d.. Bailing out.."), tempVal); |
| 1246 | return eHAL_STATUS_FAILURE; |
| 1247 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1248 | hstatus = csrScanGetResult(pMac, &scanFilter, &scanResult); |
| 1249 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Get Scan Result status code %d"), hstatus); |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1250 | /* Process the scan results and update roamable AP list */ |
| 1251 | csrNeighborRoamProcessScanResults(pMac, &scanResult); |
| 1252 | |
| 1253 | /* Free the scan filter */ |
| 1254 | csrFreeScanFilter(pMac, &scanFilter); |
| 1255 | |
| 1256 | tempVal = csrLLCount(&pNeighborRoamInfo->roamableAPList); |
| 1257 | |
| 1258 | switch(pNeighborRoamInfo->neighborRoamState) |
| 1259 | { |
| 1260 | case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| 1261 | if (tempVal) |
| 1262 | { |
| 1263 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1264 | /* If this is a non-11r association, then we can register the reassoc callback here as we have some |
| 1265 | APs in the roamable AP list */ |
| 1266 | if (pNeighborRoamInfo->is11rAssoc) |
| 1267 | { |
| 1268 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1269 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1270 | } |
| 1271 | else |
| 1272 | #endif |
| 1273 | #ifdef FEATURE_WLAN_CCX |
| 1274 | /* If this is a non-11r association, then we can register the reassoc callback here as we have some |
| 1275 | APs in the roamable AP list */ |
| 1276 | if (pNeighborRoamInfo->isCCXAssoc) |
| 1277 | { |
| 1278 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1279 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1280 | } |
| 1281 | else |
| 1282 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1283 | #ifdef FEATURE_WLAN_LFR |
| 1284 | /* If LFR is enabled, then we can register the reassoc callback here as we have some |
| 1285 | APs in the roamable AP list */ |
| 1286 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 1287 | { |
| 1288 | /* Valid APs are found after scan. Now we can initiate pre-authentication */ |
| 1289 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1290 | } |
| 1291 | else |
| 1292 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1293 | { |
| 1294 | |
| 1295 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Completed scanning of CFG CHAN LIST in non-11r association. Registering reassoc callback")); |
| 1296 | /* Nothing much to do now. Will continue to remain in this state in case of non-11r association */ |
| 1297 | /* Stop the timer. But how long the roamable AP list will be valid in here. At some point of time, we |
| 1298 | need to restart the CFG CHAN list scan procedure if reassoc callback is not invoked from TL |
| 1299 | within certain duration */ |
| 1300 | |
| 1301 | // palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 1302 | } |
| 1303 | } |
| 1304 | else |
| 1305 | { |
| 1306 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("No candidate found after scanning in state %d.. "), pNeighborRoamInfo->neighborRoamState); |
| 1307 | /* Handle it appropriately */ |
| 1308 | csrNeighborRoamHandleEmptyScanResult(pMac); |
| 1309 | } |
| 1310 | break; |
| 1311 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1312 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| 1313 | if (!tempVal) |
| 1314 | { |
| 1315 | smsLog(pMac, LOGE, FL("No candidate found after scanning in state %d.. "), pNeighborRoamInfo->neighborRoamState); |
| 1316 | /* Stop the timer here as the same timer will be started again in CFG_CHAN_SCAN_STATE */ |
| 1317 | csrNeighborRoamTransitToCFGChanScan(pMac); |
| 1318 | } |
| 1319 | break; |
| 1320 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1321 | default: |
| 1322 | // Can come only in INIT state. Where in we are associated, we sent scan and user |
| 1323 | // in the meantime decides to disassoc, we will be in init state and still received call |
| 1324 | // back issued. Should not come here in any other state, printing just in case |
| 1325 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1326 | "%s: [INFOLOG] State %d\n", __func__, (pNeighborRoamInfo->neighborRoamState)); |
| 1327 | |
| 1328 | // Lets just exit out silently. |
| 1329 | return eHAL_STATUS_SUCCESS; |
| 1330 | } |
| 1331 | |
| 1332 | if (tempVal) |
| 1333 | { |
| 1334 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 1335 | |
| 1336 | /* This timer should be started before registering the Reassoc callback with TL. This is because, it is very likely |
| 1337 | * that the callback getting called immediately and the timer would never be stopped when pre-auth is in progress */ |
| 1338 | if (eHAL_STATUS_SUCCESS != palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 1339 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1340 | eANI_BOOLEAN_FALSE)) |
| 1341 | { |
| 1342 | smsLog(pMac, LOGE, FL("Neighbor results refresh timer failed to start, status = %d"), status); |
| 1343 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1344 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1345 | return eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1346 | } |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1347 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1348 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event Reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 1349 | /* Register a reassoc Indication callback */ |
| 1350 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 1351 | WLANTL_HO_THRESHOLD_DOWN, |
| 1352 | csrNeighborRoamReassocIndCallback, |
| 1353 | VOS_MODULE_ID_SME, pMac); |
| 1354 | |
| 1355 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 1356 | { |
| 1357 | //err msg |
| 1358 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 1359 | } |
| 1360 | |
| 1361 | } |
| 1362 | } |
| 1363 | else |
| 1364 | { |
| 1365 | |
| 1366 | /* Restart the timer for the next scan sequence as scanning is not over */ |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1367 | hstatus = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1368 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1369 | eANI_BOOLEAN_FALSE); |
| 1370 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1371 | if (eHAL_STATUS_SUCCESS != hstatus) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1372 | { |
| 1373 | /* Timer start failed.. Should we ASSERT here??? */ |
| 1374 | smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status); |
| 1375 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1376 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 1377 | return eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1378 | } |
| 1379 | } |
| 1380 | return eHAL_STATUS_SUCCESS; |
| 1381 | } |
| 1382 | |
| 1383 | /* --------------------------------------------------------------------------- |
| 1384 | |
| 1385 | \fn csrNeighborRoamIssueBgScanRequest |
| 1386 | |
| 1387 | \brief This function issues CSR scan request after populating all the BG scan params |
| 1388 | passed |
| 1389 | |
| 1390 | \param pMac - The handle returned by macOpen. |
| 1391 | pBgScanParams - Params that need to be populated into csr Scan request |
| 1392 | |
| 1393 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1394 | |
| 1395 | ---------------------------------------------------------------------------*/ |
| 1396 | eHalStatus csrNeighborRoamIssueBgScanRequest(tpAniSirGlobal pMac, tCsrBGScanRequest *pBgScanParams) |
| 1397 | { |
| 1398 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1399 | tANI_U32 scanId; |
| 1400 | tCsrScanRequest scanReq; |
| 1401 | tANI_U8 channel; |
| 1402 | |
| 1403 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("csrNeighborRoamIssueBgScanRequest for Channel = %d, ChanIndex = %d"), |
| 1404 | pBgScanParams->ChannelInfo.ChannelList[0], pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex); |
| 1405 | |
| 1406 | |
| 1407 | //send down the scan req for 1 channel on the associated SSID |
| 1408 | palZeroMemory(pMac->hHdd, &scanReq, sizeof(tCsrScanRequest)); |
| 1409 | /* Fill in the SSID Info */ |
| 1410 | scanReq.SSIDs.numOfSSIDs = 1; |
| 1411 | scanReq.SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| 1412 | if(NULL == scanReq.SSIDs.SSIDList) |
| 1413 | { |
| 1414 | //err msg |
| 1415 | smsLog(pMac, LOGW, FL("Couldn't allocate memory for the SSID..Freeing memory allocated for Channel List\n")); |
| 1416 | return eHAL_STATUS_FAILURE; |
| 1417 | } |
| 1418 | vos_mem_zero(scanReq.SSIDs.SSIDList, sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| 1419 | |
| 1420 | scanReq.SSIDs.SSIDList[0].handoffPermitted = eANI_BOOLEAN_TRUE; |
| 1421 | scanReq.SSIDs.SSIDList[0].ssidHidden = eANI_BOOLEAN_TRUE; |
| 1422 | vos_mem_copy((void *)&scanReq.SSIDs.SSIDList[0].SSID, (void *)&pBgScanParams->SSID, sizeof(pBgScanParams->SSID)); |
| 1423 | |
| 1424 | scanReq.ChannelInfo.numOfChannels = pBgScanParams->ChannelInfo.numOfChannels; |
| 1425 | |
| 1426 | channel = pBgScanParams->ChannelInfo.ChannelList[0]; |
| 1427 | scanReq.ChannelInfo.ChannelList = &channel; |
| 1428 | |
| 1429 | scanReq.BSSType = eCSR_BSS_TYPE_INFRASTRUCTURE; |
| 1430 | scanReq.scanType = eSIR_ACTIVE_SCAN; |
| 1431 | scanReq.requestType = eCSR_SCAN_HO_BG_SCAN; |
| 1432 | scanReq.maxChnTime = pBgScanParams->maxChnTime; |
| 1433 | scanReq.minChnTime = pBgScanParams->minChnTime; |
| 1434 | status = csrScanRequest(pMac, CSR_SESSION_ID_INVALID, &scanReq, |
| 1435 | &scanId, csrNeighborRoamScanRequestCallback, NULL); |
| 1436 | if (eHAL_STATUS_SUCCESS != status) |
| 1437 | { |
| 1438 | smsLog(pMac, LOGE, FL("CSR Scan Request failed with status %d"), status); |
| 1439 | vos_mem_free(scanReq.SSIDs.SSIDList); |
| 1440 | return status; |
| 1441 | } |
| 1442 | pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_TRUE; |
| 1443 | |
| 1444 | vos_mem_free(scanReq.SSIDs.SSIDList); |
| 1445 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Address = %08x, Actual index = %d"), |
| 1446 | &pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList[0], |
| 1447 | pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex); |
| 1448 | return status; |
| 1449 | } |
| 1450 | |
| 1451 | /* --------------------------------------------------------------------------- |
| 1452 | |
| 1453 | \fn csrNeighborRoamPerformBgScan |
| 1454 | |
| 1455 | \brief This function is invoked on every expiry of neighborScanTimer till all |
| 1456 | the channels in the channel list are scanned. It populates necessary |
| 1457 | parameters for BG scan and calls appropriate AP to invoke the CSR scan |
| 1458 | request |
| 1459 | |
| 1460 | \param pMac - The handle returned by macOpen. |
| 1461 | |
| 1462 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1463 | |
| 1464 | ---------------------------------------------------------------------------*/ |
| 1465 | eHalStatus csrNeighborRoamPerformBgScan(tpAniSirGlobal pMac) |
| 1466 | { |
| 1467 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1468 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1469 | tCsrBGScanRequest bgScanParams; |
| 1470 | tANI_U8 broadcastBssid[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| 1471 | tANI_U8 channel = 0; |
| 1472 | |
| 1473 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1474 | { |
| 1475 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Address = %08x"), &pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[0]); |
| 1476 | } |
| 1477 | else |
| 1478 | { |
| 1479 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Empty")); |
| 1480 | // Go back and restart. Mostly timer start failure has occured. |
| 1481 | // When timer start is declared a failure, then we delete the list. |
| 1482 | // Should not happen now as we stop and then only start the scan timer. |
| 1483 | // still handle the unlikely case. |
| 1484 | csrNeighborRoamHandleEmptyScanResult(pMac); |
| 1485 | return status; |
| 1486 | } |
| 1487 | /* Need to perform scan here before getting the list */ |
| 1488 | vos_mem_copy(bgScanParams.bssid, broadcastBssid, sizeof(tCsrBssid)); |
| 1489 | bgScanParams.SSID.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length; |
| 1490 | vos_mem_copy(bgScanParams.SSID.ssId, pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId, |
| 1491 | pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length); |
| 1492 | |
| 1493 | channel = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[pNeighborRoamInfo->roamChannelInfo.currentChanIndex]; |
| 1494 | bgScanParams.ChannelInfo.numOfChannels = 1; |
| 1495 | bgScanParams.ChannelInfo.ChannelList = &channel; |
| 1496 | |
| 1497 | bgScanParams.minChnTime = pNeighborRoamInfo->cfgParams.minChannelScanTime; |
| 1498 | bgScanParams.maxChnTime = pNeighborRoamInfo->cfgParams.maxChannelScanTime; |
| 1499 | |
| 1500 | status = csrNeighborRoamIssueBgScanRequest(pMac, &bgScanParams); |
| 1501 | if (eHAL_STATUS_SUCCESS != status) |
| 1502 | { |
| 1503 | smsLog(pMac, LOGE, FL("Issue of BG Scan request failed: Status = %d"), status); |
| 1504 | return status; |
| 1505 | } |
| 1506 | |
| 1507 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex++; |
| 1508 | if (pNeighborRoamInfo->roamChannelInfo.currentChanIndex >= |
| 1509 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels) |
| 1510 | { |
| 1511 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Completed scanning channels in Channel List: CurrChanIndex = %d, Num Channels = %d"), |
| 1512 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex, |
| 1513 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels); |
| 1514 | /* We have completed scanning all the channels */ |
| 1515 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 1516 | /* We are no longer scanning the channel list. Next timer firing should be used to get the scan results |
| 1517 | and select the best AP in the list */ |
| 1518 | if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress) |
| 1519 | { |
| 1520 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | return status; |
| 1525 | } |
| 1526 | |
| 1527 | /* --------------------------------------------------------------------------- |
| 1528 | |
| 1529 | \fn csrNeighborRoamNeighborScanTimerCallback |
| 1530 | |
| 1531 | \brief This function is the neighbor scan timer callback function. It invokes |
| 1532 | the BG scan request based on the current and previous states |
| 1533 | |
| 1534 | \param pv - CSR timer context info which includes pMac and session ID |
| 1535 | |
| 1536 | \return VOID |
| 1537 | |
| 1538 | ---------------------------------------------------------------------------*/ |
| 1539 | void csrNeighborRoamNeighborScanTimerCallback(void *pv) |
| 1540 | { |
| 1541 | tCsrTimerInfo *pInfo = (tCsrTimerInfo *)pv; |
| 1542 | tpAniSirGlobal pMac = pInfo->pMac; |
| 1543 | tANI_U32 sessionId = pInfo->sessionId; |
| 1544 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1545 | |
| 1546 | // check if bg scan is on going, no need to send down the new params if true |
| 1547 | if(eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending) |
| 1548 | { |
| 1549 | //msg |
| 1550 | smsLog(pMac, LOGW, FL("Already BgScanRsp is Pending\n")); |
| 1551 | return; |
| 1552 | } |
| 1553 | |
| 1554 | VOS_ASSERT(sessionId == pNeighborRoamInfo->csrSessionId); |
| 1555 | |
| 1556 | switch (pNeighborRoamInfo->neighborRoamState) |
| 1557 | { |
| 1558 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 1559 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| 1560 | switch(pNeighborRoamInfo->prevNeighborRoamState) |
| 1561 | { |
| 1562 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY: |
| 1563 | csrNeighborRoamPerformBgScan(pMac); |
| 1564 | break; |
| 1565 | default: |
| 1566 | smsLog(pMac, LOGE, FL("Neighbor scan callback received in state %d, prev state = %d"), |
| 1567 | pNeighborRoamInfo->neighborRoamState, pNeighborRoamInfo->prevNeighborRoamState); |
| 1568 | break; |
| 1569 | } |
| 1570 | break; |
| 1571 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1572 | case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| 1573 | csrNeighborRoamPerformBgScan(pMac); |
| 1574 | break; |
| 1575 | default: |
| 1576 | break; |
| 1577 | } |
| 1578 | return; |
| 1579 | } |
| 1580 | |
| 1581 | /* --------------------------------------------------------------------------- |
| 1582 | |
| 1583 | \fn csrNeighborRoamResultsRefreshTimerCallback |
| 1584 | |
| 1585 | \brief This function is the timer callback function for results refresh timer. |
| 1586 | When this is invoked, it is as good as down event received from TL. So, |
| 1587 | clear off the roamable AP list and start the scan procedure based on 11R |
| 1588 | or non-11R association |
| 1589 | |
| 1590 | \param context - CSR timer context info which includes pMac and session ID |
| 1591 | |
| 1592 | \return VOID |
| 1593 | |
| 1594 | ---------------------------------------------------------------------------*/ |
| 1595 | void csrNeighborRoamResultsRefreshTimerCallback(void *context) |
| 1596 | { |
| 1597 | tCsrTimerInfo *pInfo = (tCsrTimerInfo *)context; |
| 1598 | tpAniSirGlobal pMac = pInfo->pMac; |
| 1599 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 1600 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1601 | |
| 1602 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 1603 | |
| 1604 | /* Deregister reassoc callback. Ignore return status */ |
| 1605 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 1606 | WLANTL_HO_THRESHOLD_DOWN, |
| 1607 | csrNeighborRoamReassocIndCallback, |
| 1608 | VOS_MODULE_ID_SME); |
| 1609 | |
| 1610 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 1611 | { |
| 1612 | //err msg |
| 1613 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 1614 | } |
| 1615 | |
| 1616 | /* Reset all the variables just as no scan had happened before */ |
| 1617 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 1618 | |
| 1619 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 1620 | if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled)) |
| 1621 | { |
| 1622 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 1623 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 1624 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1625 | { |
| 1626 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 1627 | return; |
| 1628 | } |
| 1629 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 1630 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 1631 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 1632 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY) |
| 1633 | } |
| 1634 | else |
| 1635 | #endif |
| 1636 | { |
| 1637 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Non 11R or CCX Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 1638 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 1639 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1640 | { |
| 1641 | return; |
| 1642 | } |
| 1643 | } |
| 1644 | return; |
| 1645 | } |
| 1646 | |
| 1647 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 1648 | /* --------------------------------------------------------------------------- |
| 1649 | |
| 1650 | \fn csrNeighborRoamIssueNeighborRptRequest |
| 1651 | |
| 1652 | \brief This function is invoked when TL issues a down event and the current assoc |
| 1653 | is a 11R association. It invokes SME RRM API to issue the neighbor request to |
| 1654 | the currently associated AP with the current SSID |
| 1655 | |
| 1656 | \param pMac - The handle returned by macOpen. |
| 1657 | |
| 1658 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1659 | |
| 1660 | ---------------------------------------------------------------------------*/ |
| 1661 | VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac) |
| 1662 | { |
| 1663 | tRrmNeighborRspCallbackInfo callbackInfo; |
| 1664 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1665 | tRrmNeighborReq neighborReq; |
| 1666 | |
| 1667 | |
| 1668 | neighborReq.no_ssid = 0; |
| 1669 | |
| 1670 | /* Fill in the SSID */ |
| 1671 | neighborReq.ssid.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length; |
| 1672 | vos_mem_copy(neighborReq.ssid.ssId, pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId, |
| 1673 | pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length); |
| 1674 | |
| 1675 | callbackInfo.neighborRspCallback = csrNeighborRoamRRMNeighborReportResult; |
| 1676 | callbackInfo.neighborRspCallbackContext = pMac; |
| 1677 | callbackInfo.timeout = pNeighborRoamInfo->FTRoamInfo.neighborReportTimeout; |
| 1678 | |
| 1679 | return sme_NeighborReportRequest(pMac,(tANI_U8) pNeighborRoamInfo->csrSessionId, &neighborReq, &callbackInfo); |
| 1680 | } |
| 1681 | |
| 1682 | /* --------------------------------------------------------------------------- |
| 1683 | |
| 1684 | \fn csrNeighborRoamCreateChanListFromNeighborReport |
| 1685 | |
| 1686 | \brief This function is invoked when neighbor report is received for the |
| 1687 | neighbor request. Based on the channels present in the neighbor report, |
| 1688 | it generates channel list which will be used in REPORT_SCAN state to |
| 1689 | scan for these neighbor APs |
| 1690 | |
| 1691 | \param pMac - The handle returned by macOpen. |
| 1692 | |
| 1693 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1694 | |
| 1695 | ---------------------------------------------------------------------------*/ |
| 1696 | VOS_STATUS csrNeighborRoamCreateChanListFromNeighborReport(tpAniSirGlobal pMac) |
| 1697 | { |
| 1698 | tpRrmNeighborReportDesc pNeighborBssDesc; |
| 1699 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1700 | tANI_U8 numChannels = 0, i = 0, j=0; |
| 1701 | tANI_U8 channelList[MAX_BSS_IN_NEIGHBOR_RPT]; |
| 1702 | |
| 1703 | /* This should always start from 0 whenever we create a channel list out of neighbor AP list */ |
| 1704 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| 1705 | |
| 1706 | pNeighborBssDesc = smeRrmGetFirstBssEntryFromNeighborCache(pMac); |
| 1707 | |
| 1708 | while (pNeighborBssDesc) |
| 1709 | { |
| 1710 | if (pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport >= MAX_BSS_IN_NEIGHBOR_RPT) break; |
| 1711 | |
| 1712 | /* Update the neighbor BSS Info in the 11r FT Roam Info */ |
| 1713 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].channelNum = |
| 1714 | pNeighborBssDesc->pNeighborBssDescription->channel; |
| 1715 | pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborScore = |
| 1716 | (tANI_U8)pNeighborBssDesc->roamScore; |
| 1717 | vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborBssId, |
| 1718 | pNeighborBssDesc->pNeighborBssDescription->bssId, sizeof(tSirMacAddr)); |
| 1719 | pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport++; |
| 1720 | |
| 1721 | /* Saving the channel list non-redundantly */ |
| 1722 | if (numChannels > 0) |
| 1723 | { |
| 1724 | for (i = 0; i < numChannels; i++) |
| 1725 | { |
| 1726 | if (pNeighborBssDesc->pNeighborBssDescription->channel == channelList[i]) |
| 1727 | break; |
| 1728 | } |
| 1729 | |
| 1730 | } |
| 1731 | if (i == numChannels) |
| 1732 | { |
| 1733 | if (pNeighborBssDesc->pNeighborBssDescription->channel) |
| 1734 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1735 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1736 | "%s: [INFOLOG] Adding %d to Neighbor channel list\n", __func__, |
| 1737 | pNeighborBssDesc->pNeighborBssDescription->channel); |
| 1738 | channelList[numChannels] = pNeighborBssDesc->pNeighborBssDescription->channel; |
| 1739 | numChannels++; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | pNeighborBssDesc = smeRrmGetNextBssEntryFromNeighborCache(pMac, pNeighborBssDesc); |
| 1744 | } |
| 1745 | |
| 1746 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1747 | { |
| 1748 | // Before we free the existing channel list for a safety net make sure |
| 1749 | // we have a union of the IAPP and the already existing list. |
| 1750 | for (i = 0; i < pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; i++) |
| 1751 | { |
| 1752 | for (j = 0; j < numChannels; j++) |
| 1753 | { |
| 1754 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i] == channelList[j]) |
| 1755 | break; |
| 1756 | } |
| 1757 | if (j == numChannels) |
| 1758 | { |
| 1759 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]) |
| 1760 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1761 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| 1762 | "%s: [INFOLOG] Adding extra %d to Neighbor channel list\n", __func__, |
| 1763 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]); |
| 1764 | channelList[numChannels] = |
| 1765 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]; |
| 1766 | numChannels++; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1767 | } |
| 1768 | } |
| 1769 | } |
| 1770 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1771 | } |
| 1772 | |
| 1773 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1774 | /* Store the obtained channel list to the Neighbor Control data structure */ |
| 1775 | if (numChannels) |
| 1776 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = vos_mem_malloc((numChannels) * sizeof(tANI_U8)); |
| 1777 | if (NULL == pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1778 | { |
| 1779 | smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed.. TL event ignored")); |
| 1780 | return VOS_STATUS_E_RESOURCES; |
| 1781 | } |
| 1782 | |
| 1783 | vos_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
| 1784 | channelList, (numChannels) * sizeof(tANI_U8)); |
| 1785 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numChannels; |
| 1786 | if (numChannels) |
| 1787 | { |
| 1788 | smsLog(pMac, LOG1, FL("IAPP Neighbor list callback received as expected in state %d."), |
| 1789 | pNeighborRoamInfo->neighborRoamState); |
| 1790 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_TRUE; |
| 1791 | } |
| 1792 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 1793 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| 1794 | |
| 1795 | return VOS_STATUS_SUCCESS; |
| 1796 | } |
| 1797 | |
| 1798 | /* --------------------------------------------------------------------------- |
| 1799 | |
| 1800 | \fn csrNeighborRoamRRMNeighborReportResult |
| 1801 | |
| 1802 | \brief This function is the neighbor report callback that will be invoked by |
| 1803 | SME RRM on receiving a neighbor report or of neighbor report is not |
| 1804 | received after timeout. On receiving a valid report, it generates a |
| 1805 | channel list from the neighbor report and starts the |
| 1806 | neighbor scan timer |
| 1807 | |
| 1808 | \param context - The handle returned by macOpen. |
| 1809 | vosStatus - Status of the callback(SUCCESS/FAILURE) |
| 1810 | |
| 1811 | \return VOID |
| 1812 | |
| 1813 | ---------------------------------------------------------------------------*/ |
| 1814 | void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus) |
| 1815 | { |
| 1816 | tpAniSirGlobal pMac = PMAC_STRUCT(context); |
| 1817 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1818 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1819 | |
| 1820 | smsLog(pMac, LOG1, FL("Neighbor report result callback with status = %d\n"), vosStatus); |
| 1821 | switch (pNeighborRoamInfo->neighborRoamState) |
| 1822 | { |
| 1823 | case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY: |
| 1824 | /* Reset the report pending variable */ |
| 1825 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| 1826 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 1827 | { |
| 1828 | /* Need to create channel list based on the neighbor AP list and transition to REPORT_SCAN state */ |
| 1829 | vosStatus = csrNeighborRoamCreateChanListFromNeighborReport(pMac); |
| 1830 | if (VOS_STATUS_SUCCESS == vosStatus) |
| 1831 | { |
| 1832 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List created from Neighbor report, Transitioning to NEIGHBOR_SCAN state\n")); |
| 1833 | } |
| 1834 | |
| 1835 | /* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */ |
| 1836 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 1837 | |
| 1838 | /* Now ready for neighbor scan based on the channel list created */ |
| 1839 | /* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is |
| 1840 | what palTimerStart expects */ |
| 1841 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
| 1842 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1843 | eANI_BOOLEAN_FALSE); |
| 1844 | if (eHAL_STATUS_SUCCESS != status) |
| 1845 | { |
| 1846 | /* Timer start failed.. Should we ASSERT here??? */ |
| 1847 | smsLog(pMac, LOGE, FL("PAL Timer start for neighbor scan timer failed, status = %d, Ignoring state transition"), status); |
| 1848 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1849 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1850 | return; |
| 1851 | } |
| 1852 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 1853 | /* Neighbor scan timer started. Transition to REPORT_SCAN state */ |
| 1854 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN) |
| 1855 | } |
| 1856 | else |
| 1857 | { |
| 1858 | /* Neighbor report timeout happened in SME RRM. We can try sending more neighbor requests until we |
| 1859 | reach the maxNeighborRetries or receiving a successful neighbor response */ |
| 1860 | smsLog(pMac, LOGE, FL("Neighbor report result failed after %d retries, MAX RETRIES = %d\n"), |
| 1861 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum, pNeighborRoamInfo->cfgParams.maxNeighborRetries); |
| 1862 | if (pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum >= |
| 1863 | pNeighborRoamInfo->cfgParams.maxNeighborRetries) |
| 1864 | { |
| 1865 | smsLog(pMac, LOGE, FL("Bailing out to CFG Channel list scan.. \n")); |
| 1866 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 1867 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1868 | { |
| 1869 | smsLog(pMac, LOGE, FL("Transit to CFG Channel list scan state failed with status %d \n"), vosStatus); |
| 1870 | return; |
| 1871 | } |
| 1872 | /* We transitioned to different state now. Reset the Neighbor report retry count */ |
| 1873 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 1874 | } |
| 1875 | else |
| 1876 | { |
| 1877 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 1878 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 1879 | { |
| 1880 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 1881 | return; |
| 1882 | } |
| 1883 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 1884 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 1885 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 1886 | } |
| 1887 | } |
| 1888 | break; |
| 1889 | default: |
| 1890 | smsLog(pMac, LOGE, FL("Neighbor result callback not expected in state %d, Ignoring.."), pNeighborRoamInfo->neighborRoamState); |
| 1891 | break; |
| 1892 | } |
| 1893 | return; |
| 1894 | } |
| 1895 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 1896 | |
| 1897 | |
| 1898 | /* --------------------------------------------------------------------------- |
| 1899 | |
| 1900 | \fn csrNeighborRoamTransitToCFGChanScan |
| 1901 | |
| 1902 | \brief This function is called whenever there is a transition to CFG chan scan |
| 1903 | state from any state. It frees up the current channel list and allocates |
| 1904 | a new memory for the channels received from CFG item. It then starts the |
| 1905 | neighbor scan timer to perform the scan on each channel one by one |
| 1906 | |
| 1907 | \param pMac - The handle returned by macOpen. |
| 1908 | |
| 1909 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 1910 | |
| 1911 | ---------------------------------------------------------------------------*/ |
| 1912 | VOS_STATUS csrNeighborRoamTransitToCFGChanScan(tpAniSirGlobal pMac) |
| 1913 | { |
| 1914 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 1915 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 1916 | int i = 0; |
| 1917 | int numOfChannels = 0; |
| 1918 | tANI_U8 channelList[MAX_BSS_IN_NEIGHBOR_RPT]; |
| 1919 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1920 | if ( |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1921 | #ifdef FEATURE_WLAN_CCX |
| 1922 | ((pNeighborRoamInfo->isCCXAssoc) && |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 1923 | (pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived == eANI_BOOLEAN_FALSE)) || |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1924 | (pNeighborRoamInfo->isCCXAssoc == eANI_BOOLEAN_FALSE) || |
| 1925 | #endif // CCX |
| 1926 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels == 0) |
| 1927 | |
| 1928 | { |
| 1929 | smsLog(pMac, LOGW, FL("Falling back to CFG channel list")); |
| 1930 | |
| 1931 | |
| 1932 | /* Free up the channel list and allocate a new memory. This is because we dont know how much |
| 1933 | was allocated last time. If we directly copy more number of bytes than allocated earlier, this might |
| 1934 | result in memory corruption */ |
| 1935 | if (NULL != pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1936 | { |
| 1937 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1938 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1939 | } |
| 1940 | // Find the right subset of the cfg list based on the current band we are on. |
| 1941 | for (i = 0; i < pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels; i++) |
| 1942 | { |
| 1943 | if (pNeighborRoamInfo->cfgParams.channelInfo.ChannelList[i]) |
| 1944 | { |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1945 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, |
| 1946 | "%s: [INFOLOG] Adding %d to Neighbor channel list\n", __func__, |
| 1947 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList[i]); |
| 1948 | channelList[numOfChannels] = pNeighborRoamInfo->cfgParams.channelInfo.ChannelList[i]; |
| 1949 | numOfChannels++; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 1950 | } |
| 1951 | } |
| 1952 | |
| 1953 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numOfChannels; |
| 1954 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1955 | if (numOfChannels) |
| 1956 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = vos_mem_malloc(numOfChannels); |
| 1957 | |
| 1958 | if (NULL == pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 1959 | { |
| 1960 | smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed.. TL event ignored")); |
| 1961 | return VOS_STATUS_E_RESOURCES; |
| 1962 | } |
| 1963 | |
| 1964 | /* Since this is a legacy case, copy the channel list from CFG here */ |
| 1965 | vos_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList, |
| 1966 | channelList, numOfChannels * sizeof(tANI_U8)); |
| 1967 | |
| 1968 | for (i = 0; i < pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; i++) |
| 1969 | { |
| 1970 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, "Channel List from CFG = %d\n", |
| 1971 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]); |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | /* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */ |
| 1976 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 1977 | |
| 1978 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 1979 | /* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is |
| 1980 | what palTimerStart expects */ |
| 1981 | status = palTimerStart(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer, |
| 1982 | pNeighborRoamInfo->cfgParams.neighborScanPeriod * PAL_TIMER_TO_MS_UNIT, |
| 1983 | eANI_BOOLEAN_FALSE); |
| 1984 | |
| 1985 | if (eHAL_STATUS_SUCCESS != status) |
| 1986 | { |
| 1987 | /* Timer start failed.. */ |
| 1988 | smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status); |
| 1989 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 1990 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 1991 | return VOS_STATUS_E_FAILURE; |
| 1992 | } |
| 1993 | |
| 1994 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| 1995 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| 1996 | |
| 1997 | /* Transition to CFG_CHAN_LIST_SCAN_STATE */ |
| 1998 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN) |
| 1999 | |
| 2000 | return VOS_STATUS_SUCCESS; |
| 2001 | } |
| 2002 | |
| 2003 | /* --------------------------------------------------------------------------- |
| 2004 | |
| 2005 | \fn csrNeighborRoamNeighborLookupUpEvent |
| 2006 | |
| 2007 | \brief This function is called as soon as TL indicates that the current AP's |
| 2008 | RSSI is better than the neighbor lookup threshold. Here, we transition to |
| 2009 | CONNECTED state and reset all the scan parameters |
| 2010 | |
| 2011 | \param pMac - The handle returned by macOpen. |
| 2012 | |
| 2013 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2014 | |
| 2015 | ---------------------------------------------------------------------------*/ |
| 2016 | VOS_STATUS csrNeighborRoamNeighborLookupUpEvent(tpAniSirGlobal pMac) |
| 2017 | { |
| 2018 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2019 | VOS_STATUS vosStatus; |
| 2020 | |
| 2021 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering UP event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 2022 | /* Deregister the UP event now */ |
| 2023 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 2024 | WLANTL_HO_THRESHOLD_UP, |
| 2025 | csrNeighborRoamNeighborLookupUPCallback, |
| 2026 | VOS_MODULE_ID_SME); |
| 2027 | |
| 2028 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2029 | { |
| 2030 | //err msg |
| 2031 | smsLog(pMac, LOGW, FL(" Couldn't Deregister csrNeighborRoamNeighborLookupCallback UP event from TL: Status = %d\n"), vosStatus); |
| 2032 | } |
| 2033 | |
| 2034 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 2035 | /* Deregister the UP event now */ |
| 2036 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 2037 | WLANTL_HO_THRESHOLD_DOWN, |
| 2038 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2039 | VOS_MODULE_ID_SME); |
| 2040 | |
| 2041 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2042 | { |
| 2043 | //err msg |
| 2044 | smsLog(pMac, LOGW, FL(" Couldn't Deregister csrNeighborRoamNeighborLookupCallback UP event from TL: Status = %d\n"), vosStatus); |
| 2045 | } |
| 2046 | |
| 2047 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc callback with TL. RSSI = %d"), pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| 2048 | /* Deregister reassoc callback. */ |
| 2049 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| 2050 | WLANTL_HO_THRESHOLD_DOWN, |
| 2051 | csrNeighborRoamReassocIndCallback, |
| 2052 | VOS_MODULE_ID_SME); |
| 2053 | |
| 2054 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2055 | { |
| 2056 | //err msg |
| 2057 | smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d\n"), vosStatus); |
| 2058 | } |
| 2059 | |
| 2060 | |
| 2061 | /* RSSI got better than the CFG neighbor lookup threshold. Reset the threshold to older value and set the increment multiplier to 0 */ |
| 2062 | pNeighborRoamInfo->currentLookupIncrementMultiplier = 0; |
| 2063 | |
| 2064 | pNeighborRoamInfo->currentNeighborLookupThreshold = pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| 2065 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2066 | /* Recheck whether the below check is needed. */ |
| 2067 | if (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 2068 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
Jeff Johnson | e724574 | 2012-09-05 17:12:55 -0700 | [diff] [blame] | 2069 | |
| 2070 | /* Reset all the neighbor roam info control variables. Free all the allocated memory. It is like we are just associated now */ |
| 2071 | csrNeighborRoamResetConnectedStateControlInfo(pMac); |
| 2072 | |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2073 | |
| 2074 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 2075 | /* Register Neighbor Lookup threshold callback with TL for DOWN event now */ |
| 2076 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 2077 | WLANTL_HO_THRESHOLD_DOWN, |
| 2078 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2079 | VOS_MODULE_ID_SME, pMac); |
| 2080 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2081 | { |
| 2082 | //err msg |
| 2083 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback DOWN event with TL: Status = %d\n"), vosStatus); |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | return vosStatus; |
| 2088 | } |
| 2089 | |
| 2090 | /* --------------------------------------------------------------------------- |
| 2091 | |
| 2092 | \fn csrNeighborRoamNeighborLookupDownEvent |
| 2093 | |
| 2094 | \brief This function is called as soon as TL indicates that the current AP's |
| 2095 | RSSI falls below the current eighbor lookup threshold. Here, we transition to |
| 2096 | REPORT_QUERY for 11r association and CFG_CHAN_LIST_SCAN state if the assoc is |
| 2097 | a non-11R association. |
| 2098 | |
| 2099 | \param pMac - The handle returned by macOpen. |
| 2100 | |
| 2101 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2102 | |
| 2103 | ---------------------------------------------------------------------------*/ |
| 2104 | VOS_STATUS csrNeighborRoamNeighborLookupDownEvent(tpAniSirGlobal pMac) |
| 2105 | { |
| 2106 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2107 | VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| 2108 | eHalStatus status = eHAL_STATUS_SUCCESS; |
| 2109 | |
| 2110 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2111 | { |
| 2112 | case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| 2113 | |
| 2114 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event neighbor lookup callback with TL. RSSI = %d,"), |
| 2115 | pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| 2116 | /* De-register Neighbor Lookup threshold callback with TL */ |
| 2117 | vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| 2118 | WLANTL_HO_THRESHOLD_DOWN, |
| 2119 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2120 | VOS_MODULE_ID_SME); |
| 2121 | |
| 2122 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2123 | { |
| 2124 | //err msg |
| 2125 | smsLog(pMac, LOGW, FL(" Couldn't Deregister csrNeighborRoamNeighborLookupCallback DOWN event from TL: Status = %d\n"), status); |
| 2126 | } |
| 2127 | |
| 2128 | |
| 2129 | #if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI |
| 2130 | if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled)) |
| 2131 | { |
| 2132 | |
| 2133 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 2134 | vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac); |
| 2135 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2136 | { |
| 2137 | smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d\n"), vosStatus); |
| 2138 | return vosStatus; |
| 2139 | } |
| 2140 | /* Increment the neighbor report retry count after sending the neighbor request successfully */ |
| 2141 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++; |
| 2142 | pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE; |
| 2143 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY) |
| 2144 | } |
| 2145 | else |
| 2146 | #endif |
| 2147 | { |
| 2148 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Non 11R or CCX Association:Neighbor Lookup Down event received in CONNECTED state")); |
| 2149 | |
| 2150 | vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac); |
| 2151 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2152 | { |
| 2153 | return vosStatus; |
| 2154 | } |
| 2155 | } |
| 2156 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering UP event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1)); |
| 2157 | /* Register Neighbor Lookup threshold callback with TL for UP event now */ |
| 2158 | vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->cfgParams.neighborLookupThreshold * (-1), |
| 2159 | WLANTL_HO_THRESHOLD_UP, |
| 2160 | csrNeighborRoamNeighborLookupUPCallback, |
| 2161 | VOS_MODULE_ID_SME, pMac); |
| 2162 | if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| 2163 | { |
| 2164 | //err msg |
| 2165 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback UP event with TL: Status = %d\n"), status); |
| 2166 | } |
| 2167 | break; |
| 2168 | default: |
| 2169 | smsLog(pMac, LOGE, FL("DOWN event received in invalid state %d..Ignoring..."), pNeighborRoamInfo->neighborRoamState); |
| 2170 | break; |
| 2171 | |
| 2172 | } |
| 2173 | return vosStatus; |
| 2174 | } |
| 2175 | |
| 2176 | /* --------------------------------------------------------------------------- |
| 2177 | |
| 2178 | \fn csrNeighborRoamNeighborLookupUPCallback |
| 2179 | |
| 2180 | \brief This function is registered with TL to indicate whenever the RSSI |
| 2181 | gets better than the neighborLookup RSSI Threshold |
| 2182 | |
| 2183 | \param pAdapter - VOS Context |
| 2184 | trafficStatus - UP/DOWN indication from TL |
| 2185 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 2186 | |
| 2187 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2188 | |
| 2189 | ---------------------------------------------------------------------------*/ |
| 2190 | VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 2191 | v_PVOID_t pUserCtxt) |
| 2192 | { |
| 2193 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 2194 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2195 | VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS; |
| 2196 | |
| 2197 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Neighbor Lookup UP indication callback called with notification %d"), rssiNotification); |
| 2198 | |
| 2199 | if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId)) |
| 2200 | { |
| 2201 | smsLog(pMac, LOGW, "Ignoring the indication as we are not connected\n"); |
| 2202 | return VOS_STATUS_SUCCESS; |
| 2203 | } |
| 2204 | |
| 2205 | VOS_ASSERT(WLANTL_HO_THRESHOLD_UP == rssiNotification); |
| 2206 | vosStatus = csrNeighborRoamNeighborLookupUpEvent(pMac); |
| 2207 | return vosStatus; |
| 2208 | } |
| 2209 | |
| 2210 | /* --------------------------------------------------------------------------- |
| 2211 | |
| 2212 | \fn csrNeighborRoamNeighborLookupDOWNCallback |
| 2213 | |
| 2214 | \brief This function is registered with TL to indicate whenever the RSSI |
| 2215 | falls below the current neighborLookup RSSI Threshold |
| 2216 | |
| 2217 | \param pAdapter - VOS Context |
| 2218 | trafficStatus - UP/DOWN indication from TL |
| 2219 | pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| 2220 | |
| 2221 | \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2222 | |
| 2223 | ---------------------------------------------------------------------------*/ |
| 2224 | VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| 2225 | v_PVOID_t pUserCtxt) |
| 2226 | { |
| 2227 | tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt ); |
| 2228 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2229 | VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS; |
| 2230 | |
| 2231 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Neighbor Lookup DOWN indication callback called with notification %d"), rssiNotification); |
| 2232 | |
| 2233 | if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId)) |
| 2234 | { |
| 2235 | smsLog(pMac, LOGW, "Ignoring the indication as we are not connected\n"); |
| 2236 | return VOS_STATUS_SUCCESS; |
| 2237 | } |
| 2238 | |
| 2239 | VOS_ASSERT(WLANTL_HO_THRESHOLD_DOWN == rssiNotification); |
| 2240 | vosStatus = csrNeighborRoamNeighborLookupDownEvent(pMac); |
| 2241 | |
| 2242 | return vosStatus; |
| 2243 | } |
| 2244 | |
| 2245 | #ifdef RSSI_HACK |
| 2246 | extern int dumpCmdRSSI; |
| 2247 | #endif |
| 2248 | |
| 2249 | /* --------------------------------------------------------------------------- |
| 2250 | |
| 2251 | \fn csrNeighborRoamIndicateDisconnect |
| 2252 | |
| 2253 | \brief This function is called by CSR as soon as the station disconnects from |
| 2254 | the AP. This function does the necessary cleanup of neighbor roam data |
| 2255 | structures. Neighbor roam state transitions to INIT state whenever this |
| 2256 | function is called except if the current state is REASSOCIATING |
| 2257 | |
| 2258 | \param pMac - The handle returned by macOpen. |
| 2259 | sessionId - CSR session id that got disconnected |
| 2260 | |
| 2261 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2262 | |
| 2263 | ---------------------------------------------------------------------------*/ |
| 2264 | eHalStatus csrNeighborRoamIndicateDisconnect(tpAniSirGlobal pMac, tANI_U8 sessionId) |
| 2265 | { |
| 2266 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2267 | |
| 2268 | smsLog(pMac, LOGE, FL("Disconnect indication received with session id %d in state %d"), sessionId, pNeighborRoamInfo->neighborRoamState); |
| 2269 | |
| 2270 | #ifdef FEATURE_WLAN_CCX |
| 2271 | { |
| 2272 | tCsrRoamSession *pSession = CSR_GET_SESSION( pMac, sessionId); |
| 2273 | if (pSession->connectedProfile.isCCXAssoc) |
| 2274 | { |
| 2275 | vos_mem_copy(&pSession->prevApSSID, &pSession->connectedProfile.SSID, sizeof(tSirMacSSid)); |
| 2276 | vos_mem_copy(pSession->prevApBssid, pSession->connectedProfile.bssid, sizeof(tSirMacAddr)); |
| 2277 | pSession->prevOpChannel = pSession->connectedProfile.operationChannel; |
| 2278 | pSession->isPrevApInfoValid = TRUE; |
| 2279 | pSession->roamTS1 = vos_timer_get_system_time(); |
| 2280 | |
| 2281 | } |
| 2282 | } |
| 2283 | #endif |
| 2284 | |
| 2285 | #ifdef RSSI_HACK |
| 2286 | dumpCmdRSSI = -40; |
| 2287 | #endif |
| 2288 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2289 | { |
| 2290 | case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| 2291 | // Stop scan and neighbor refresh timers. |
| 2292 | // These are indeed not required when we are in reassociating |
| 2293 | // state. |
| 2294 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2295 | palTimerStop(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2296 | break; |
| 2297 | |
| 2298 | case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| 2299 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Ignoring disconnect event in INIT state")); |
| 2300 | csrNeighborRoamResetInitStateControlInfo(pMac); |
| 2301 | break; |
| 2302 | |
| 2303 | default: |
| 2304 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Received disconnect event in state %d"), pNeighborRoamInfo->neighborRoamState); |
| 2305 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Transitioning to INIT state")); |
| 2306 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2307 | } |
| 2308 | return eHAL_STATUS_SUCCESS; |
| 2309 | } |
| 2310 | |
| 2311 | /* --------------------------------------------------------------------------- |
| 2312 | |
| 2313 | \fn csrNeighborRoamIndicateConnect |
| 2314 | |
| 2315 | \brief This function is called by CSR as soon as the station connects to an AP. |
| 2316 | This initializes all the necessary data structures related to the |
| 2317 | associated AP and transitions the state to CONNECTED state |
| 2318 | |
| 2319 | \param pMac - The handle returned by macOpen. |
| 2320 | sessionId - CSR session id that got connected |
| 2321 | vosStatus - connect status SUCCESS/FAILURE |
| 2322 | |
| 2323 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2324 | |
| 2325 | ---------------------------------------------------------------------------*/ |
| 2326 | eHalStatus csrNeighborRoamIndicateConnect(tpAniSirGlobal pMac, tANI_U8 sessionId, VOS_STATUS vosStatus) |
| 2327 | { |
| 2328 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2329 | eHalStatus status = eHAL_STATUS_SUCCESS; |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2330 | VOS_STATUS vstatus; |
| 2331 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2332 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2333 | int init_ft_flag = FALSE; |
| 2334 | #endif |
| 2335 | |
| 2336 | smsLog(pMac, LOGE, FL("Connect indication received with session id %d in state %d"), sessionId, pNeighborRoamInfo->neighborRoamState); |
| 2337 | |
| 2338 | switch (pNeighborRoamInfo->neighborRoamState) |
| 2339 | { |
| 2340 | case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| 2341 | if (VOS_STATUS_SUCCESS != vosStatus) |
| 2342 | { |
| 2343 | /* Just transition the state to INIT state. Rest of the clean up happens when we get next connect indication */ |
| 2344 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2345 | break; |
| 2346 | } |
| 2347 | /* Fall through if the status is SUCCESS */ |
| 2348 | case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| 2349 | /* Reset all the data structures here */ |
| 2350 | csrNeighborRoamResetInitStateControlInfo(pMac); |
| 2351 | |
| 2352 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| 2353 | |
| 2354 | pNeighborRoamInfo->csrSessionId = sessionId; |
| 2355 | vos_mem_copy(pNeighborRoamInfo->currAPbssid, |
| 2356 | pMac->roam.roamSession[sessionId].connectedProfile.bssid, sizeof(tCsrBssid)); |
| 2357 | pNeighborRoamInfo->currAPoperationChannel = pMac->roam.roamSession[sessionId].connectedProfile.operationChannel; |
| 2358 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 2359 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = sessionId; |
| 2360 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2361 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2362 | /* Now we can clear the preauthDone that was saved as we are connected afresh */ |
| 2363 | csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 2364 | #endif |
| 2365 | |
| 2366 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2367 | // Based on the auth scheme tell if we are 11r |
| 2368 | if ( csrIsAuthType11r( pMac->roam.roamSession[sessionId].connectedProfile.AuthType ) ) |
| 2369 | { |
| 2370 | if (pMac->roam.configParam.isFastTransitionEnabled) |
| 2371 | init_ft_flag = TRUE; |
| 2372 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_TRUE; |
| 2373 | } |
| 2374 | else |
| 2375 | pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE; |
| 2376 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11rAssoc is = %d"), pNeighborRoamInfo->is11rAssoc); |
| 2377 | #endif |
| 2378 | |
| 2379 | #ifdef FEATURE_WLAN_CCX |
| 2380 | // Based on the auth scheme tell if we are 11r |
| 2381 | if (pMac->roam.roamSession[sessionId].connectedProfile.isCCXAssoc) |
| 2382 | { |
| 2383 | if (pMac->roam.configParam.isFastTransitionEnabled) |
| 2384 | init_ft_flag = TRUE; |
| 2385 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_TRUE; |
| 2386 | } |
| 2387 | else |
| 2388 | pNeighborRoamInfo->isCCXAssoc = eANI_BOOLEAN_FALSE; |
| 2389 | NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("isCCXAssoc is = %d"), pNeighborRoamInfo->isCCXAssoc); |
| 2390 | VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_FATAL, |
| 2391 | "ccx=%d ft=%d\n", pNeighborRoamInfo->isCCXAssoc, init_ft_flag); |
| 2392 | |
| 2393 | #endif |
| 2394 | |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2395 | #ifdef FEATURE_WLAN_LFR |
| 2396 | // If "Legacy Fast Roaming" is enabled |
| 2397 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 2398 | { |
| 2399 | init_ft_flag = TRUE; |
| 2400 | } |
| 2401 | #endif |
| 2402 | |
| 2403 | #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_CCX) || defined(FEATURE_WLAN_LFR) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2404 | if ( init_ft_flag == TRUE ) |
| 2405 | { |
| 2406 | /* Initialize all the data structures needed for the 11r FT Preauth */ |
| 2407 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.pMac = pMac; |
| 2408 | pNeighborRoamInfo->FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = sessionId; |
| 2409 | pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2410 | csrNeighborRoamPurgePreauthFailedList(pMac); |
| 2411 | |
| 2412 | NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering neighbor lookup DOWN event with TL, RSSI = %d"), pNeighborRoamInfo->currentNeighborLookupThreshold); |
| 2413 | /* Register Neighbor Lookup threshold callback with TL for DOWN event only */ |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2414 | vstatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2415 | WLANTL_HO_THRESHOLD_DOWN, |
| 2416 | csrNeighborRoamNeighborLookupDOWNCallback, |
| 2417 | VOS_MODULE_ID_SME, pMac); |
| 2418 | |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2419 | if(!VOS_IS_STATUS_SUCCESS(vstatus)) |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2420 | { |
| 2421 | //err msg |
Jeff Johnson | 43971f5 | 2012-07-17 12:26:56 -0700 | [diff] [blame] | 2422 | smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d\n"), vstatus); |
| 2423 | status = eHAL_STATUS_FAILURE; |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2424 | } |
| 2425 | } |
| 2426 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2427 | break; |
| 2428 | default: |
| 2429 | smsLog(pMac, LOGE, FL("Connect event received in invalid state %d..Ignoring..."), pNeighborRoamInfo->neighborRoamState); |
| 2430 | break; |
| 2431 | } |
| 2432 | return status; |
| 2433 | } |
| 2434 | |
| 2435 | |
| 2436 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2437 | /* --------------------------------------------------------------------------- |
| 2438 | |
| 2439 | \fn csrNeighborRoamPreAuthResponseWaitTimerHandler |
| 2440 | |
| 2441 | \brief If this function is invoked, that means the preauthentication response |
| 2442 | is timed out from the PE. Preauth rsp handler is called with status as |
| 2443 | TIMEOUT |
| 2444 | |
| 2445 | \param context - CSR Timer info which holds pMac and session ID |
| 2446 | |
| 2447 | \return VOID |
| 2448 | |
| 2449 | ---------------------------------------------------------------------------*/ |
| 2450 | void csrNeighborRoamPreAuthResponseWaitTimerHandler(void *context) |
| 2451 | { |
| 2452 | tCsrTimerInfo *pTimerInfo = (tCsrTimerInfo *)context; |
| 2453 | tpAniSirGlobal pMac = (tpAniSirGlobal)pTimerInfo->pMac; |
| 2454 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2455 | |
| 2456 | pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| 2457 | |
| 2458 | csrNeighborRoamPreauthRspHandler(pMac, VOS_STATUS_E_TIMEOUT); |
| 2459 | } |
| 2460 | |
| 2461 | /* --------------------------------------------------------------------------- |
| 2462 | |
| 2463 | \fn csrNeighborRoamPurgePreauthFailedList |
| 2464 | |
| 2465 | \brief This function purges all the MAC addresses in the pre-auth fail list |
| 2466 | |
| 2467 | \param pMac - The handle returned by macOpen. |
| 2468 | |
| 2469 | \return VOID |
| 2470 | |
| 2471 | ---------------------------------------------------------------------------*/ |
| 2472 | void csrNeighborRoamPurgePreauthFailedList(tpAniSirGlobal pMac) |
| 2473 | { |
| 2474 | tANI_U8 i; |
| 2475 | |
| 2476 | for (i = 0; i < pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress; i++) |
| 2477 | { |
| 2478 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.macAddress[i], sizeof(tSirMacAddr)); |
| 2479 | } |
| 2480 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress = 0; |
| 2481 | |
| 2482 | return; |
| 2483 | } |
| 2484 | |
| 2485 | /* --------------------------------------------------------------------------- |
| 2486 | |
| 2487 | \fn csrNeighborRoamInit11rAssocInfo |
| 2488 | |
| 2489 | \brief This function initializes 11r related neighbor roam data structures |
| 2490 | |
| 2491 | \param pMac - The handle returned by macOpen. |
| 2492 | |
| 2493 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2494 | |
| 2495 | ---------------------------------------------------------------------------*/ |
| 2496 | eHalStatus csrNeighborRoamInit11rAssocInfo(tpAniSirGlobal pMac) |
| 2497 | { |
| 2498 | eHalStatus status; |
| 2499 | tpCsr11rAssocNeighborInfo pFTRoamInfo = &pMac->roam.neighborRoamInfo.FTRoamInfo; |
| 2500 | |
| 2501 | pMac->roam.neighborRoamInfo.is11rAssoc = eANI_BOOLEAN_FALSE; |
| 2502 | pMac->roam.neighborRoamInfo.cfgParams.maxNeighborRetries = pMac->roam.configParam.neighborRoamConfig.nMaxNeighborRetries; |
| 2503 | pFTRoamInfo->neighborReportTimeout = CSR_NEIGHBOR_ROAM_REPORT_QUERY_TIMEOUT; |
| 2504 | pFTRoamInfo->PEPreauthRespTimeout = CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * pMac->roam.neighborRoamInfo.cfgParams.neighborScanPeriod; |
| 2505 | pFTRoamInfo->neighborRptPending = eANI_BOOLEAN_FALSE; |
| 2506 | pFTRoamInfo->preauthRspPending = eANI_BOOLEAN_FALSE; |
| 2507 | |
| 2508 | pFTRoamInfo->preAuthRspWaitTimerInfo.pMac = pMac; |
| 2509 | pFTRoamInfo->preAuthRspWaitTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2510 | status = palTimerAlloc(pMac->hHdd, &pFTRoamInfo->preAuthRspWaitTimer, |
| 2511 | csrNeighborRoamPreAuthResponseWaitTimerHandler, (void *)&pFTRoamInfo->preAuthRspWaitTimerInfo); |
| 2512 | |
| 2513 | if (eHAL_STATUS_SUCCESS != status) |
| 2514 | { |
| 2515 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2516 | return eHAL_STATUS_RESOURCES; |
| 2517 | } |
| 2518 | |
| 2519 | pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2520 | pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0; |
| 2521 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo, |
| 2522 | sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 2523 | |
| 2524 | |
| 2525 | status = csrLLOpen(pMac->hHdd, &pFTRoamInfo->preAuthDoneList); |
| 2526 | if (eHAL_STATUS_SUCCESS != status) |
| 2527 | { |
| 2528 | smsLog(pMac, LOGE, FL("LL Open of preauth done AP List failed")); |
| 2529 | palTimerFree(pMac->hHdd, pFTRoamInfo->preAuthRspWaitTimer); |
| 2530 | return eHAL_STATUS_RESOURCES; |
| 2531 | } |
| 2532 | return status; |
| 2533 | } |
| 2534 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 2535 | |
| 2536 | /* --------------------------------------------------------------------------- |
| 2537 | |
| 2538 | \fn csrNeighborRoamInit |
| 2539 | |
| 2540 | \brief This function initializes neighbor roam data structures |
| 2541 | |
| 2542 | \param pMac - The handle returned by macOpen. |
| 2543 | |
| 2544 | \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| 2545 | |
| 2546 | ---------------------------------------------------------------------------*/ |
| 2547 | eHalStatus csrNeighborRoamInit(tpAniSirGlobal pMac) |
| 2548 | { |
| 2549 | eHalStatus status; |
| 2550 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2551 | |
| 2552 | pNeighborRoamInfo->neighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| 2553 | pNeighborRoamInfo->prevNeighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| 2554 | pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID; |
| 2555 | pNeighborRoamInfo->cfgParams.maxChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMaxChanTime; |
| 2556 | pNeighborRoamInfo->cfgParams.minChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMinChanTime; |
| 2557 | pNeighborRoamInfo->cfgParams.maxNeighborRetries = 0; |
| 2558 | pNeighborRoamInfo->cfgParams.neighborLookupThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborLookupRssiThreshold; |
| 2559 | pNeighborRoamInfo->cfgParams.neighborReassocThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborReassocRssiThreshold; |
| 2560 | pNeighborRoamInfo->cfgParams.neighborScanPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborScanTimerPeriod; |
| 2561 | pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborResultsRefreshPeriod; |
| 2562 | |
| 2563 | pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels = |
| 2564 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels; |
| 2565 | |
| 2566 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = |
| 2567 | vos_mem_malloc(pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels); |
| 2568 | |
| 2569 | if (NULL == pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) |
| 2570 | { |
| 2571 | smsLog(pMac, LOGE, FL("Memory Allocation for CFG Channel List failed")); |
| 2572 | return eHAL_STATUS_RESOURCES; |
| 2573 | } |
| 2574 | |
| 2575 | /* Update the roam global structure from CFG */ |
| 2576 | palCopyMemory(pMac->hHdd, pNeighborRoamInfo->cfgParams.channelInfo.ChannelList, |
| 2577 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.channelList, |
| 2578 | pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels); |
| 2579 | |
| 2580 | vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0); |
| 2581 | pNeighborRoamInfo->currentNeighborLookupThreshold = pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold; |
| 2582 | pNeighborRoamInfo->currentLookupIncrementMultiplier = 0; |
| 2583 | pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| 2584 | |
| 2585 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| 2586 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2587 | status = palTimerAlloc(pMac->hHdd, &pNeighborRoamInfo->neighborScanTimer, |
| 2588 | csrNeighborRoamNeighborScanTimerCallback, (void *)&pNeighborRoamInfo->neighborScanTimerInfo); |
| 2589 | |
| 2590 | if (eHAL_STATUS_SUCCESS != status) |
| 2591 | { |
| 2592 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2593 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2594 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2595 | return eHAL_STATUS_RESOURCES; |
| 2596 | } |
| 2597 | |
| 2598 | status = palTimerAlloc(pMac->hHdd, &pNeighborRoamInfo->neighborResultsRefreshTimer, |
| 2599 | csrNeighborRoamResultsRefreshTimerCallback, (void *)&pNeighborRoamInfo->neighborScanTimerInfo); |
| 2600 | |
| 2601 | if (eHAL_STATUS_SUCCESS != status) |
| 2602 | { |
| 2603 | smsLog(pMac, LOGE, FL("Response wait Timer allocation failed")); |
| 2604 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2605 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2606 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2607 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2608 | return eHAL_STATUS_RESOURCES; |
| 2609 | } |
| 2610 | |
| 2611 | status = csrLLOpen(pMac->hHdd, &pNeighborRoamInfo->roamableAPList); |
| 2612 | if (eHAL_STATUS_SUCCESS != status) |
| 2613 | { |
| 2614 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2615 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2616 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2617 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2618 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2619 | return eHAL_STATUS_RESOURCES; |
| 2620 | } |
| 2621 | |
| 2622 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 2623 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| 2624 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2625 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 2626 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE; |
| 2627 | |
| 2628 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2629 | status = csrNeighborRoamInit11rAssocInfo(pMac); |
| 2630 | if (eHAL_STATUS_SUCCESS != status) |
| 2631 | { |
| 2632 | smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed")); |
| 2633 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2634 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2635 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2636 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2637 | csrLLClose(&pNeighborRoamInfo->roamableAPList); |
| 2638 | return eHAL_STATUS_RESOURCES; |
| 2639 | } |
| 2640 | #endif |
| 2641 | /* Initialize this with the current tick count */ |
| 2642 | pNeighborRoamInfo->scanRequestTimeStamp = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd); |
| 2643 | |
| 2644 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2645 | |
| 2646 | return eHAL_STATUS_SUCCESS; |
| 2647 | } |
| 2648 | |
| 2649 | /* --------------------------------------------------------------------------- |
| 2650 | |
| 2651 | \fn csrNeighborRoamClose |
| 2652 | |
| 2653 | \brief This function closes/frees all the neighbor roam data structures |
| 2654 | |
| 2655 | \param pMac - The handle returned by macOpen. |
| 2656 | |
| 2657 | \return VOID |
| 2658 | |
| 2659 | ---------------------------------------------------------------------------*/ |
| 2660 | void csrNeighborRoamClose(tpAniSirGlobal pMac) |
| 2661 | { |
| 2662 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2663 | |
| 2664 | if (eCSR_NEIGHBOR_ROAM_STATE_CLOSED == pNeighborRoamInfo->neighborRoamState) |
| 2665 | { |
| 2666 | smsLog(pMac, LOGE, FL("Neighbor Roam Algorithm Already Closed\n")); |
| 2667 | return; |
| 2668 | } |
| 2669 | |
| 2670 | if (pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) |
| 2671 | vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList); |
| 2672 | |
| 2673 | pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| 2674 | |
| 2675 | pNeighborRoamInfo->neighborScanTimerInfo.pMac = NULL; |
| 2676 | pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2677 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborScanTimer); |
| 2678 | palTimerFree(pMac->hHdd, pNeighborRoamInfo->neighborResultsRefreshTimer); |
| 2679 | |
| 2680 | /* Should free up the nodes in the list before closing the double Linked list */ |
| 2681 | csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
| 2682 | csrLLClose(&pNeighborRoamInfo->roamableAPList); |
| 2683 | |
| 2684 | if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) |
| 2685 | { |
| 2686 | vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| 2687 | } |
| 2688 | |
| 2689 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2690 | pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| 2691 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| 2692 | pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| 2693 | pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| 2694 | pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE; |
| 2695 | |
| 2696 | /* Free the profile.. */ |
| 2697 | csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 2698 | |
| 2699 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2700 | pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0; |
| 2701 | palTimerFree(pMac->hHdd, pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimer); |
| 2702 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimerInfo.pMac = NULL; |
| 2703 | pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthRspWaitTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| 2704 | pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0; |
| 2705 | vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo, |
| 2706 | sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| 2707 | csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 2708 | csrLLClose(&pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList); |
| 2709 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 2710 | |
| 2711 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CLOSED) |
| 2712 | |
| 2713 | return; |
| 2714 | } |
| 2715 | |
| 2716 | /* --------------------------------------------------------------------------- |
| 2717 | |
| 2718 | \fn csrNeighborRoamRequestHandoff |
| 2719 | |
| 2720 | \brief This function triggers actual switching from one AP to the new AP. |
| 2721 | It issues disassociate with reason code as Handoff and CSR as a part of |
| 2722 | handling disassoc rsp, issues reassociate to the new AP |
| 2723 | |
| 2724 | \param pMac - The handle returned by macOpen. |
| 2725 | |
| 2726 | \return VOID |
| 2727 | |
| 2728 | ---------------------------------------------------------------------------*/ |
| 2729 | void csrNeighborRoamRequestHandoff(tpAniSirGlobal pMac) |
| 2730 | { |
| 2731 | |
| 2732 | tCsrRoamInfo roamInfo; |
| 2733 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2734 | tANI_U32 sessionId = pNeighborRoamInfo->csrSessionId; |
| 2735 | tCsrNeighborRoamBSSInfo handoffNode; |
| 2736 | extern void csrRoamRoamingStateDisassocRspProcessor( tpAniSirGlobal pMac, tSirSmeDisassocRsp *pSmeDisassocRsp ); |
| 2737 | tANI_U32 roamId = 0; |
| 2738 | |
| 2739 | if (pMac->roam.neighborRoamInfo.neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) |
| 2740 | { |
| 2741 | smsLog(pMac, LOGE, FL("Roam requested when Neighbor roam is in %d state"), |
| 2742 | pMac->roam.neighborRoamInfo.neighborRoamState); |
| 2743 | return; |
| 2744 | } |
| 2745 | |
| 2746 | vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo)); |
| 2747 | csrRoamCallCallback(pMac, pNeighborRoamInfo->csrSessionId, &roamInfo, roamId, eCSR_ROAM_FT_START, |
| 2748 | eSIR_SME_SUCCESS); |
| 2749 | |
| 2750 | vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo)); |
| 2751 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING) |
| 2752 | |
| 2753 | csrNeighborRoamGetHandoffAPInfo(pMac, &handoffNode); |
| 2754 | smsLog(pMac, LOGE, FL("HANDOFF CANDIDATE BSSID %02x:%02x:%02x:%02x:%02x:%02x"), |
| 2755 | handoffNode.pBssDescription->bssId[0], |
| 2756 | handoffNode.pBssDescription->bssId[1], |
| 2757 | handoffNode.pBssDescription->bssId[2], |
| 2758 | handoffNode.pBssDescription->bssId[3], |
| 2759 | handoffNode.pBssDescription->bssId[4], |
| 2760 | handoffNode.pBssDescription->bssId[5]); |
| 2761 | |
| 2762 | /* Free the profile.. Just to make sure we dont leak memory here */ |
| 2763 | csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 2764 | /* Create the Handoff AP profile. Copy the currently connected profile and update only the BSSID and channel number |
| 2765 | This should happen before issuing disconnect */ |
| 2766 | csrRoamCopyConnectedProfile(pMac, pNeighborRoamInfo->csrSessionId, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| 2767 | vos_mem_copy(pNeighborRoamInfo->csrNeighborRoamProfile.BSSIDs.bssid, handoffNode.pBssDescription->bssId, sizeof(tSirMacAddr)); |
| 2768 | pNeighborRoamInfo->csrNeighborRoamProfile.ChannelInfo.ChannelList[0] = handoffNode.pBssDescription->channelId; |
| 2769 | |
| 2770 | NEIGHBOR_ROAM_DEBUG(pMac, LOGW, " csrRoamHandoffRequested: disassociating with current AP\n"); |
| 2771 | |
| 2772 | if(!HAL_STATUS_SUCCESS(csrRoamIssueDisassociateCmd(pMac, sessionId, eCSR_DISCONNECT_REASON_HANDOFF))) |
| 2773 | { |
| 2774 | smsLog(pMac, LOGW, "csrRoamHandoffRequested: fail to issue disassociate\n"); |
| 2775 | return; |
| 2776 | } |
| 2777 | |
| 2778 | //notify HDD for handoff, providing the BSSID too |
| 2779 | roamInfo.reasonCode = eCsrRoamReasonBetterAP; |
| 2780 | |
| 2781 | vos_mem_copy(roamInfo.bssid, |
| 2782 | handoffNode.pBssDescription->bssId, |
| 2783 | sizeof( tCsrBssid )); |
| 2784 | |
| 2785 | csrRoamCallCallback(pMac, sessionId, &roamInfo, 0, eCSR_ROAM_ROAMING_START, eCSR_ROAM_RESULT_NONE); |
| 2786 | |
| 2787 | |
| 2788 | return; |
| 2789 | } |
| 2790 | |
| 2791 | /* --------------------------------------------------------------------------- |
| 2792 | |
| 2793 | \fn csrNeighborRoamIsHandoffInProgress |
| 2794 | |
| 2795 | \brief This function returns whether handoff is in progress or not based on |
| 2796 | the current neighbor roam state |
| 2797 | |
| 2798 | \param pMac - The handle returned by macOpen. |
| 2799 | is11rReassoc - Return whether reassoc is of type 802.11r reassoc |
| 2800 | |
| 2801 | \return eANI_BOOLEAN_TRUE if reassoc in progress, eANI_BOOLEAN_FALSE otherwise |
| 2802 | |
| 2803 | ---------------------------------------------------------------------------*/ |
| 2804 | tANI_BOOLEAN csrNeighborRoamIsHandoffInProgress(tpAniSirGlobal pMac) |
| 2805 | { |
| 2806 | if (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == pMac->roam.neighborRoamInfo.neighborRoamState) |
| 2807 | return eANI_BOOLEAN_TRUE; |
| 2808 | |
| 2809 | return eANI_BOOLEAN_FALSE; |
| 2810 | } |
| 2811 | |
| 2812 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2813 | /* --------------------------------------------------------------------------- |
| 2814 | |
| 2815 | \fn csrNeighborRoamIs11rAssoc |
| 2816 | |
| 2817 | \brief This function returns whether the current association is a 11r assoc or not |
| 2818 | |
| 2819 | \param pMac - The handle returned by macOpen. |
| 2820 | |
| 2821 | \return eANI_BOOLEAN_TRUE if current assoc is 11r, eANI_BOOLEAN_FALSE otherwise |
| 2822 | |
| 2823 | ---------------------------------------------------------------------------*/ |
| 2824 | tANI_BOOLEAN csrNeighborRoamIs11rAssoc(tpAniSirGlobal pMac) |
| 2825 | { |
| 2826 | return pMac->roam.neighborRoamInfo.is11rAssoc; |
| 2827 | } |
| 2828 | #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| 2829 | |
| 2830 | |
| 2831 | /* --------------------------------------------------------------------------- |
| 2832 | |
| 2833 | \fn csrNeighborRoamGetHandoffAPInfo |
| 2834 | |
| 2835 | \brief This function returns the best possible AP for handoff. For 11R case, it |
| 2836 | returns the 1st entry from pre-auth done list. For non-11r case, it returns |
| 2837 | the 1st entry from roamable AP list |
| 2838 | |
| 2839 | \param pMac - The handle returned by macOpen. |
| 2840 | pHandoffNode - AP node that is the handoff candidate returned |
| 2841 | |
| 2842 | \return VOID |
| 2843 | |
| 2844 | ---------------------------------------------------------------------------*/ |
| 2845 | void csrNeighborRoamGetHandoffAPInfo(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo pHandoffNode) |
| 2846 | { |
| 2847 | tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo; |
| 2848 | tpCsrNeighborRoamBSSInfo pBssNode; |
| 2849 | |
| 2850 | VOS_ASSERT(NULL != pHandoffNode); |
| 2851 | |
| 2852 | #ifdef WLAN_FEATURE_VOWIFI_11R |
| 2853 | if (pNeighborRoamInfo->is11rAssoc) |
| 2854 | { |
| 2855 | /* Always the BSS info in the head is the handoff candidate */ |
| 2856 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 2857 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 2858 | } |
| 2859 | else |
| 2860 | #endif |
| 2861 | #ifdef FEATURE_WLAN_CCX |
| 2862 | if (pNeighborRoamInfo->isCCXAssoc) |
| 2863 | { |
| 2864 | /* Always the BSS info in the head is the handoff candidate */ |
| 2865 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 2866 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 2867 | } |
| 2868 | else |
| 2869 | #endif |
Jeff Johnson | 04dd8a8 | 2012-06-29 20:41:40 -0700 | [diff] [blame] | 2870 | #ifdef FEATURE_WLAN_LFR |
| 2871 | if (csrRoamIsFastRoamEnabled(pMac)) |
| 2872 | { |
| 2873 | /* Always the BSS info in the head is the handoff candidate */ |
| 2874 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL); |
| 2875 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList)); |
| 2876 | } |
| 2877 | else |
| 2878 | #endif |
Jeff Johnson | 295189b | 2012-06-20 16:38:30 -0700 | [diff] [blame] | 2879 | { |
| 2880 | pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| 2881 | NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->roamableAPList)); |
| 2882 | } |
| 2883 | vos_mem_copy(pHandoffNode, pBssNode, sizeof(tCsrNeighborRoamBSSInfo)); |
| 2884 | |
| 2885 | return; |
| 2886 | } |
| 2887 | |
| 2888 | /* --------------------------------------------------------------------------- |
| 2889 | \brief This function returns TRUE if preauth is completed |
| 2890 | |
| 2891 | \param pMac - The handle returned by macOpen. |
| 2892 | |
| 2893 | \return boolean |
| 2894 | |
| 2895 | ---------------------------------------------------------------------------*/ |
| 2896 | tANI_BOOLEAN csrNeighborRoamStatePreauthDone(tpAniSirGlobal pMac) |
| 2897 | { |
| 2898 | return (pMac->roam.neighborRoamInfo.neighborRoamState == |
| 2899 | eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE); |
| 2900 | } |
| 2901 | |
| 2902 | /* --------------------------------------------------------------------------- |
| 2903 | \brief In the event that we are associated with AP1 and we have |
| 2904 | completed pre auth with AP2. Then we receive a deauth/disassoc from |
| 2905 | AP1. |
| 2906 | At this point neighbor roam is in pre auth done state, pre auth timer |
| 2907 | is running. We now handle this case by stopping timer and clearing |
| 2908 | the pre-auth state. We basically clear up and just go to disconnected |
| 2909 | state. |
| 2910 | |
| 2911 | \param pMac - The handle returned by macOpen. |
| 2912 | |
| 2913 | \return boolean |
| 2914 | ---------------------------------------------------------------------------*/ |
| 2915 | void csrNeighborRoamTranistionPreauthDoneToDisconnected(tpAniSirGlobal pMac) |
| 2916 | { |
| 2917 | if (pMac->roam.neighborRoamInfo.neighborRoamState != |
| 2918 | eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) return; |
| 2919 | |
| 2920 | // Stop timer |
| 2921 | palTimerStop(pMac->hHdd, pMac->ft.ftSmeContext.preAuthReassocIntvlTimer); |
| 2922 | |
| 2923 | // Transition to init state |
| 2924 | CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT) |
| 2925 | } |
| 2926 | |
| 2927 | #endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */ |